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B !$@$F,($G|L@! $!!,('0<'\!'<8!(,0$($0<4B $4$ $@! @!CC$b+d@! C$b!  !$@$F($G|ЏL@! $ $ $@! @!CC$bd@! B !$@$F($G}L@! B@ ! ($B 0@!$$$bC'(` !@(!$ @! $$$bd@! B !$@$F($G}8L@! C'4$` !4$@8!@! $$$bd@! B !$@$F($G}\L@! k$D@! $$@ !$@$F($G}L@! M$D0(!($F78!$@! $$@6$ !$@$F($G}L@! B@ !h@! $BB@ !h@! $C$B$C!B@ !h@! $C$!<8'@<'!'د$ !$C$b($D}菂($E~$@$G@! $BC'` !@(!$@! @ !$@$F䏂($G~(L@! B0@ !(!@! B@ !h@! $CB@ !h@! $BB@ !h@! $C$B$C!!$ '(<'!'د$ !(,0(,b!0@! ((0@! @(b!C$=b $B(b!(@! $B(b!((b+@(B@!!$ '(<'׌!'Я,(!048 @ ($E~p@! @$04($F~($B*@! @ ($E~p@! @$04($F~($B*@! @W (!$ @! 0C@Cd@! B@ d@! @$04($F~($B*@! @$ (!$ @! 0CDCd@! B@zd@! @$04($F~($B*@! @$ $/@! $$@$t$$B@ !(!$ @! 0C@Cd@! B@ d@! @$P$$B@ !(!$ @! 0CDCd@! B@ d@! @$,!)04($F~($B*@!( @$ $/@! $$@$$C<C!!,('0<'!'h! P'Ph$lptx|'\p$ t'hx$|'8$C'p` !@(!0!@! (($b/d@! C$ b"d@! C$bd@! B !$@$F($G~L@! $((B @0B @ !$@$F($G~쏂L@! $d$b`@d` !$@$F($G L@! $,B @!,,@,C$b !$@$F($GDL@! $,$B 00B@0B !$@$F($GxL@! $a('P'X'P'T'U`0!@8!($B+@!l 44@4HT@(!U@ !PX@($B($B !$@$F($GL@! X@T@!U` !@(!d@! T@ !U@!P`(!@0!P@! !!'<'!'<8!@$(,0B$$(B,$0 !$@$Fp@$G L@! Q@L*0B0B0B@#C' ` !@(!$@! @O !$@$Fp@$G,L@! ?20B0B0B@($B@!($B2@!P($B@!'$@ !$$@! Ad@! C$b !$@$Fp@$GPL@! !!<8'@<'0!'د$ !($B@!>($B2@!@($B@!?!$ '(<'Ȁ!'د $$&H &1$ '(x! $ x! $x! $x! $x! $x! $x! $x! $􏙀x! $鏙x! $叙x! $䏙x! $Ꮩx! $֏x! $̏x! $ɏx! $ŏx! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $ux! $tx! $qx! $mx! $kx! $jx! $ex! $ax! $Yx! $Px! $Nx! $Ex! $Ax! $;x! $7x! $2x! $/x! $*x! $&x! $$x! $#x! $x! $x! $x! $x! $ x! $x! $x! $x! $x! $叙x! $㏙x! $ۏx! $яx! $Ώx! $ʏx! $Ǐx! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $x! $<'!'௼<'¬!$'9\P ' [Globals][VID_ConfigFlags=ConfigFlags=0x%X[VID_%X&PID_%X%s/ftd2xx.cfgr/usr/local/lib/ftd2xx.cfg/usr/lib/ftd2xx.cfgABCDEFGHerrors == 0libftd2xx/ftd2xx.cpBuffers != ((void *)0)pdwCount != ((void *)0)pdevice->ftdic.usb_dev == ((void *)0)pdevice->ftdic.usb_dev != ((void *)0)pdevice->dev_desc == ((void *)0)pdevice->config_desc == ((void *)0)pDevExt != ((void *)0)ABCDEFGHp8P%02d%02d%02dendPtr == &buf[6]versionNumber > 0versionNumber <= 0x999999versionNumberToHexwrite_threadOpenDeviceGetDeviceListAllconstructD2xx%.60s %1c%.60sABCDEFGHpDevExt != ((void *)0)libftd2xx/bulk_in.c$tprocessor_threadreader_threadidt->idslibftd2xx/idtable.cidt != ((void *)0)IdTable_finalEntryIdTable_addIdTable_findIdTable_destroy0,,,D X!l"#$,,,,,,,%(%(*|*|!l".<< -------------------------------------------------------------------------------- errorwarninginfodebugunknown[%2d.%06d] [%08x] libusb: %s [%s] libusb: %s [%s] XTlLIBUSB_ERROR_IOLIBUSB_ERROR_INVALID_PARAMLIBUSB_ERROR_ACCESSLIBUSB_ERROR_NO_DEVICELIBUSB_ERROR_NOT_FOUNDLIBUSB_ERROR_BUSYLIBUSB_ERROR_TIMEOUTLIBUSB_ERROR_OVERFLOWLIBUSB_ERROR_PIPELIBUSB_ERROR_INTERRUPTEDLIBUSB_ERROR_NO_MEMLIBUSB_ERROR_NOT_SUPPORTEDLIBUSB_ERROR_OTHERLIBUSB_TRANSFER_ERRORLIBUSB_TRANSFER_TIMED_OUTLIBUSB_TRANSFER_CANCELLEDLIBUSB_TRANSFER_STALLLIBUSB_TRANSFER_NO_DEVICELIBUSB_TRANSFER_OVERFLOWLIBUSB_SUCCESS / LIBUSB_TRANSFER_COMPLETED**UNKNOWN**P<(t`dxlibusb_exitlibusb_initlibusb_attach_kernel_driverlibusb_detach_kernel_driverlibusb_kernel_driver_activelibusb_free_streamslibusb_alloc_streamslibusb_reset_devicelibusb_clear_haltlibusb_set_interface_alt_settinglibusb_release_interfacelibusb_claim_interfacelibusb_set_configurationlibusb_get_configurationlibusb_closedo_closelibusb_openusbi_clear_eventusbi_signal_eventlibusb_unref_devicelibusb_get_max_iso_packet_sizelibusb_get_max_packet_sizelibusb_get_port_numberslibusb_get_device_listusbi_sanitize_devicediscovered_devs_appendshort endpoint descriptor read %d/%dbbunexpected descriptor %x (expected %x)bbbbwbbbbbbbwbinvalid endpoint bLength (%d)invalid extra ep desc len (%d)short extra ep desc read %d/%dskipping descriptor %xbbbbbbbbbinvalid interface bLength (%d)short intf descriptor read %d/%dtoo many endpoints (%d)invalid extra intf desc len (%d)short extra intf desc read %d/%dshort config descriptor read %d/%dbbwbbbbbinvalid config bLength (%d)too many interfaces (%d)invalid extra config desc len (%d)short extra config desc read %d/%dskipping descriptor 0x%xparse_configuration failed with error %dstill %d bytes of descriptor data leftbbwindex %dvalue %dinvalid descriptor length %dinvalid ss-ep-comp-desc length %dbbbbwshort bos descriptor read %d/%dbbwbinvalid bos bLength (%d)short dev-cap descriptor read %d/%dbbbinvalid dev-cap bLength (%d)failed to read BOS (%d)short BOS read %d/%dfound BOS descriptor: size %d bytes, %d capabilitiesunexpected bDevCapabilityType %x (expected %x)bbbdbbbbwbbwbbbbulibusb_get_container_id_descriptorlibusb_get_ss_usb_device_capability_descriptorlibusb_get_usb_2_0_extension_descriptorlibusb_get_bos_descriptorparse_boslibusb_get_ss_endpoint_companion_descriptorusbi_get_config_index_by_valuelibusb_get_config_descriptorlibusb_get_active_config_descriptorlibusb_get_device_descriptorraw_desc_to_configparse_configurationparse_interfaceparse_endpointfailed to read monotonic clock, errno=%dtransfer %pcancel transfer failed error %dfailed to set timer for next timeout, errno=%dinterpreting short transfer as errortransfer %p has callback %pdetected timeout cancellationsomeone else is closing a deviceasync cancel failed %d errno=%dpoll fds modified, reallocatingctx->pollfds_cnt >= internal_nfdslibusb/libusb/io.cpoll() %d fds with timeout in %dmspoll() returned %dpoll failed %d err=%dcaught a fish on the event pipesomeone updated the poll fdssomeone purposely interruptedsomeone unregistered a hotplug cbsomeone is closing a devicehotplug message receivedbackend handle_transfer_completion failed with error %dbackend handle_events failed with error %ddoing our own event handlingevent handler was active but went away, retryinganother thread is doing event handlingno URBs, no timeout!no URB with timeout or all handled by OS; no timeout!first timeout already expirednext timeout in %d.%06dsadd fd %d events %dremove fd %dcouldn't find fd %d to removedevice %d.%dcancelling transfer %p from disconnectusbi_handle_disconnectusbi_remove_pollfdusbi_add_pollfdlibusb_get_next_timeoutlibusb_handle_events_timeout_completedhandle_eventshandle_eventshandle_timeoutlibusb_interrupt_event_handlerlibusb_event_handler_activelibusb_event_handling_oklibusb_try_lock_eventsusbi_handle_transfer_cancellationusbi_handle_transfer_completionlibusb_cancel_transferlibusb_submit_transferlibusb_free_transferlibusb_alloc_transfercalculate_timeouterror allocating hotplug messagenew hotplug cb %p with handle %dderegister hotplug cb %dfreeing hotplug cb %p with handle %dusbi_hotplug_deregisterlibusb_hotplug_deregister_callbacklibusb_hotplug_register_callbackusbi_hotplug_notificationennlfrruSuccessInput/Output ErrorInvalid parameterAccess denied (insufficient permissions)No such device (it may have been disconnected)Entity not foundResource busyOperation timed outOverflowPipe errorSystem call interrupted (perhaps due to signal)Insufficient memoryOperation not supported or unimplemented on this platformOther errorGeluktInvoer-/uitvoerfoutOngeldig argumentToegang geweigerd (onvoldoende toegangsrechten)Apparaat bestaat niet (verbinding met apparaat verbroken?)Niet gevondenApparaat of hulpbron is bezigBewerking verlopenWaarde is te grootGebroken pijpOnderbroken systeemaanroepOnvoldoende geheugen beschikbaarBewerking wordt niet ondersteundAndere foutSuccèsErreur d'entrée/sortieParamètre invalideAccès refusé (permissions insuffisantes)Périphérique introuvable (peut-être déconnecté)Elément introuvableResource déjà occupéeOperation expiréeDébordementErreur de pipeAppel système abandonné (peut-être à cause d’un signal)Mémoire insuffisanteOpération non supportée or non implémentée sur cette plateformeAutre erreurУспехОшибка ввода/выводаНеверный параметрДоступ запрещён (не хватает прав)Устройство отсутствует (возможно, оно было отсоединено)Элемент не найденРесурс занятИстекло время ожидания операцииПереполнениеОшибка каналаСистемный вызов прерван (возможно, сигналом)Память исчерпанаОперация не поддерживается данной платформойНеизвестная ошибкаactual_length=%dlibusb_handle_events failed: %s, cancelling transfer and retryingunrecognised status code %d`a0`a0aaa ddTddTd$dDd4do_sync_bulk_transferlibusb_control_transfersync_transfer_wait_for_completionsync_transfer_cb%s/usbdev%d.%d%s/%03d/%03dFile doesn't exist, wait %d ms and try againlibusb couldn't open USB device %s: %slibusb requires write access to USB device nodes.usbdev%d.%dfound: %s/dev/bus/usb/proc/bus/usb/devfound usbfs at %smonotonic clock doesn't work, errno %duname failed, errno %d%d.%d.%dfailed to parse uname release '%s'reported kernel version is %scould not find usbfsbulk continuation flag supportedzero length packet flag supportedmax iso packet length is (likely) %u bytes/sys/bus/usb/devicessysfs not mountedsysfs can relate devicessysfs has complete descriptorserror starting hotplug event monitorinit_count != 0libusb/libusb/os/linux_usbfs.c%s/%s/%sopen %s failed ret=%d errno=%dopen %s failed errno=%drfdopen %s failed errno=%d%dfscanf %s returned %d, errno=%d%s contains a negative valuebConfigurationValueread bConfigurationValue failed ret=%d errno=%ddevice unconfigurednot null-terminated?no configuration value?error converting '%s' to integergetting address for device: %s detached: %d/dev/bus/usb/%hhu/%hhu/proc/bus/usb/%hhu/%hhuscan %sbusnumdevnumbus=%d dev=%dshort descriptor read %d/2bbbLength overflow by %d bytesshort descriptor read %d/%dbbwbbbbbdescriptor is not a config desc (type 0x%02x)config length mismatch wTotalLength %d real %dinvalid wTotalLength %dget_configuration failed ret=%d errno=%dactive cfg 0? assuming unconfigured devicespeedUnknown device speed: %d Mbpsdescriptorsread descriptor failed ret=%d errno=%dshort descriptor read (%d)Missing rw usbfs access; cannot determine active configuration descriptorusbCan not parse sysfs_dir: %s, no parent infousb%sparent_dev %s not enumerated yet, enumerating nowDev %p (%s) has parent %p (%s) port %dbusnum %d devaddr %d session_id %ldsession_id %ld already existsallocating new device for %d/%d (session %ld)device not found for session %x%s/%03d%sopendir '%s' failed, errno=%dunknown dir entry %sfailed to enumerate dir entry %sopendir buses failed errno=%dopendir devices failed errno=%dopen failed with no device, but device still attachedgetcap not availablegetcap failed (%d)failed, error %d errno %dclaim interface failed, error %d errno %drelease interface failed, error %d errno %dsetintf failed error %d errno %dclear_halt failed error %d errno %dreset failed error %d errno %dfailed to re-claim interface %d after reset: %sstreams-ioctl failed error %d errno %dalloc dev mem failed errno %dfree dev mem failed errno %dget driver failed error %d errno %dusbfsdetach failed error %d errno %dattach failed error %d errno %ddisconnect-and-claim failed errno %dURB not found --> assuming ready to be reapedDevice not found for URB --> assuming ready to be reapedunrecognised discard errno %dneed %d urbs for new transfer with length %dsubmiturb failed error %d errno=%dfirst URB failed, easy peasyreporting successful submission but waiting for %d discards before reporting erroriso packet length of %u bytes exceeds maximum of %u bytessubmiturb failed, transfer too largesubmiturb failed, iso packet length too largeunknown endpoint type %d$LtLhandling completion status %d of bulk urb %d/%dabnormal reap: urb status %dreceived %d bytes of surplus datamoving surplus data from offset %d to offset %dabnormal reap: last URB handled, reportingdevice removeddetected endpoint stalloverflow, actual_length=%dlow level error %dunrecognised urb status %dlast URB in transfer --> complete!short transfer %d/%d --> complete!could not locate urb!handling completion status %d of iso urb %d/%doverflow errorlow-level USB error %dCANCEL: urb status %dCANCEL: last URB handled, reportinghandling completion status %dcancel: unrecognised urb status %dunsupported control requestcontrol overflow errorlow-level bus error occurredreap failed error %d errno=%durb type=%d status=%d transferred=%dunrecognised endpoint type %xcannot find handle for fd %dLinux usbfsop_handle_eventsreap_for_handlehandle_control_completionhandle_iso_completionhandle_bulk_completionop_clear_transfer_privop_submit_transfersubmit_control_transfersubmit_iso_transfersubmit_bulk_transferdiscard_urbsdetach_kernel_driver_and_claimop_attach_kernel_driverop_detach_kernel_driverop_kernel_driver_activeop_dev_mem_freeop_dev_mem_allocdo_streams_ioctlop_reset_deviceop_clear_haltop_set_interfacerelease_interfaceclaim_interfaceop_set_configurationop_get_configurationop_opensysfs_get_device_listusbfs_get_device_listusbfs_scan_busdirlinux_device_disconnectedlinux_enumerate_devicelinux_get_parent_infoinitialize_deviceusbfs_get_active_configseek_to_next_configseek_to_next_descriptorlinux_get_device_addresssysfs_get_active_config__read_sysfs_attr_open_sysfs_attrop_exitop_initget_kernel_versionfind_monotonic_clockfind_usbfs_path_is_usbdev_entry_get_usbfs_fdfailed to get netlink fd flags (%d)failed to set netlink fd flags (%d)failed to get netlink fd status flags (%d)failed to set netlink fd status flags (%d)failed to create netlink socket of type %d, attempting SOCK_RAWfailed to create netlink socket (%d)failed to bind netlink socket (%d)failed to set netlink socket SO_PASSCRED option (%d)failed to create netlink control pipefailed to create netlink event thread (%d)linux_netlink_socket != -1libusb/libusb/os/linux_netlink.cnetlink control pipe signal failedACTIONremoveaddunknown device action %sSUBSYSTEMusbDEVTYPEusb_deviceBUSNUMDEVNUMDEVICEDEVPATHerror receiving message from netlink (%d)invalid netlink message lengthignoring netlink message from unknown group/PID (%u/%u)ignoring netlink message with no sender credentialsignoring netlink message with non-zero sender UID %uyesnonetlink hotplug found device busnum: %hhu, devaddr: %hhu, sys_name: %s, removed: %snetlink event thread enteringnetlink control pipe read failednetlink event thread exitinglinux_netlink_event_thread_mainlinux_netlink_read_messagelinux_netlink_parselinux_netlink_stop_event_monitorlinux_netlink_stop_event_monitorlinux_netlink_start_event_monitorset_fd_cloexec_nb,0FFxLzX 0t(݄,TфD8؜,$   <Xp_________`,`@`P`d`p`|```aaa$a8ahaaaaab b(bLbpb|bbbbcc,cHc\clc|ccdd(d4d\dde(eLedeeef,fLfX|/;@@@pPPpxp@`;dR@P@@@0d$3p`$Yt@ y,@x@Jd(<h?xK|BD??8?\?hht>?p9lH@?fO?Kle8BLiJ<?p\?`M4BO?P?@qbItcd4?0V 8DmtP;? 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Oy a H y  ф @ y D y  8 !y 3 Ky ]؜D uyh yH ݄ ,  D y8   ,  y  '@  ;y  MP ex w, x @  x   x  t x )l8 Cx| U exl w$ xX  X X 0 0 , #" 57 U! n! *P +  2   p   XYp 2 GH( M0 f 88 x;` D =\$ ;pZ +( \ ,  j  2( O;c;iNxh ; D < ( `  x < 'd 1 A| XG \4 t ;/  ;;E, d #$l E | e@ 2p?Y  IV  UWD n;v@ Ȅ   ;<a X L << L  S  7p N@ aRH x4 |   3tp <  D  X ! , IA@  !q4 !! !/X !_ @ !} !r !$< !Ax !;< !o !!N !<0!0  !4T "<@" _| " "/` ">< "LIp 'L='Qð '] 't 'Hp 'Z 'lp ' '= 't8  ' (  (<  (&, (@H,P `X (PPD (aC  (v:| (f0 (@ (ct (]( _@| ( (=0(=@(k ) P )=P) )1;@$ )? )Q  )gX )yh )8 )=`), )* )Z( )D )` *=p* 4X *%=** *A  *\$ *l]< *=*<l *t * x *  * * + + +8=+CBt +WKd +a@  +rp +@p< +ph +Pp +\ +X +Nl` ,=,"U ,> ,[D ,e ,yVp@ ,C$` ,YD ,\ ,\P , ,( , p4 ,D - dp  -%h\ -@8 -Z=-_ dH -}X - -߸4 -\ -dT0 -=-}8 -K,\ -`$ .R ^ . .# .: .Q .^=.f( .s  .¨ .+<4 .t .  .=.M .d0 /7 /c( /& $ //>/6Y /Bl8 /V /h>/o /D| /hh /h /> /, /D /| 0>00, 0'` 06V 0N,4 0aq` ( 0o>@0|ܔ$ 0<T 0Y,t 0>P0 0X 0S< 0>`0>p0>, 1X$ 1H 1%L\ 1? 1SD 1i^` 1x 1۰ 1} 1 1j 1p 1>1ڐ  2b\ 2  2 25sh@ 2E>2J>2R>2W< 2f 2v 2@ 2g 2_8 2+$ 2IX 2>2C4 2D 3>3)tD 3I 3j}0 3|L 3>3` 3@ 3p 35t 3 3e(| 3>3?3Hh 4+( 4 4)04820x 4Fhxp 4V?< 4]( p  4n 4.QL 4  4R 4 4π  4 5[, 5*-  5: 5Ic 5TO 5lV 5w 57 5 5$ 5  5* 5h8 65h 6ZP 6 g0 68N@ 6E?6YW 6d? 6i; 6w~$ 6P 6mt 6DX 6 68` 6V  6?0646d 7 c 7!td 7CIL 7W 7^bH 7f 7u7@7 71< 7q 7?@75L( 7( 8 8?P8%O 8;BH 8CM4| 8T?`8f\P 8{&` 8 $ 8 8?p8J<  8i 8BL 8e8 9  9+ 9/KlP 9I?9_$ 9o  9 9O 9f 9?9 d< 9H@( 99l  9  9p 9?:  : i  ::> :A  :St :`h :gf4t :|| :h :?:h :\ :?:80| :?: :?;BD ;K|H ;, ;:x ;J?;S ;\h ;o< ;( ;d ;J ;@;x ; h ;@;0 ;y,8 <@ <P <Yt| <1$ pollfds_cnt >= internal_nfdslibusb/libusb/io.cpoll() %d fds with timeout in %dmspoll() returned %dpoll failed %d err=%dcaught a fish on the event pipesomeone updated the poll fdssomeone purposely interruptedsomeone unregistered a hotplug cbsomeone is closing a devicehotplug message receivedbackend handle_transfer_completion failed with error %dbackend handle_events failed with error %ddoing our own event handlingevent handler was active but went away, retryinganother thread is doing event handlingno URBs, no timeout!no URB with timeout or all handled by OS; no timeout!first timeout already expirednext timeout in %d.%06dsadd fd %d events %dremove fd %dcouldn't find fd %d to removedevice %d.%dcancelling transfer %p from disconnectusbi_handle_disconnectusbi_remove_pollfdusbi_add_pollfdlibusb_get_next_timeoutlibusb_handle_events_timeout_completedhandle_eventshandle_eventshandle_timeoutlibusb_interrupt_event_handlerlibusb_event_handler_activelibusb_event_handling_oklibusb_try_lock_eventsusbi_handle_transfer_cancellationusbi_handle_transfer_completionlibusb_cancel_transferlibusb_submit_transferlibusb_free_transferlibusb_alloc_transfercalculate_timeoutGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rodata.comment.gnu.attributes@X` z %X+X0pX=X9  B`XP```X0f;aofg qi: q{LLxx'<09\IXY`XkX~Xh\h,XX\8X` X Td1@ C( U gX(d\    "   h L -, ?-TN `/$4w1X28    @(l'  L    .    @I\o';NH[eMu{ DOLT@h"94HW|@u!Dd"$P|)%<&dQ'$j(,)+,,($<OGDgALDdEDpEtF(G(LL6=RPTtdT`io.clist_initlist_addlist_add_taillist_dellist_cutusbi_mutex_initusbi_mutex_lockusbi_mutex_unlockusbi_mutex_trylockusbi_mutex_destroyusbi_cond_initusbi_cond_waitusbi_cond_broadcastusbi_cond_destroyusbi_tls_key_createusbi_tls_key_getusbi_tls_key_setusbi_tls_key_deletecalculate_timeout__FUNCTION__.4320__FUNCTION__.4331__FUNCTION__.4336arm_timerfd_for_next_timeoutadd_to_flying_listremove_from_flying_list__FUNCTION__.4365__FUNCTION__.4371__FUNCTION__.4390__FUNCTION__.4397__FUNCTION__.4408__FUNCTION__.4419__FUNCTION__.4424__FUNCTION__.4429handle_timeout__FUNCTION__.4446handle_timeouts_lockedhandle_timeoutshandle_events__FUNCTION__.4474__PRETTY_FUNCTION__.4475get_next_timeout__FUNCTION__.4507__FUNCTION__.4540usbi_fd_notification__FUNCTION__.4561__FUNCTION__.4568__FUNCTION__.4590_gp_disppthread_mutex_initpthread_mutex_lockpthread_mutex_unlockpthread_mutex_trylockpthread_mutex_destroypthread_cond_initpthread_cond_waitpthread_cond_broadcastpthread_cond_destroypthread_key_createpthread_getspecificpthread_setspecificpthread_key_deleteusbi_io_initusbi_pipeusbi_add_pollfdcloseusbi_io_exitusbi_remove_pollfdfreeusbi_backend__errno_locationusbi_loglibusb_alloc_transfercalloclibusb_free_transferlibusb_submit_transferlibusb_ref_devicelibusb_cancel_transferlibusb_transfer_set_stream_idlibusb_transfer_get_stream_idusbi_handle_transfer_completionlibusb_unref_deviceusbi_handle_transfer_cancellationusbi_signal_transfer_completionusbi_signal_eventlibusb_try_lock_eventsusbi_default_contextlibusb_lock_eventslibusb_unlock_eventslibusb_event_handling_oklibusb_event_handler_activelibusb_interrupt_event_handlerlibusb_lock_event_waiterslibusb_unlock_event_waiterslibusb_wait_for_eventusbi_cond_timedwait__assertusbi_clear_eventpollusbi_hotplug_deregisterusbi_hotplug_matchlibusb_get_next_timeoutlibusb_handle_events_timeout_completedlibusb_handle_events_timeoutlibusb_handle_eventslibusb_handle_events_completedlibusb_handle_events_lockedlibusb_pollfds_handle_timeoutslibusb_set_pollfd_notifiersmalloclibusb_get_pollfdslibusb_free_pollfdsusbi_handle_disconnect::l t|%::; ;%: :0< <<%`:d:= =%::> >%::8? 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C$b !$$F@$G @! !!<8'@<'!'د$ !$B@! $B@! @$BX@! !$ '( X 0@( $( t0 @(failed to get netlink fd flags (%d)failed to set netlink fd flags (%d)failed to get netlink fd status flags (%d)failed to set netlink fd status flags (%d)failed to create netlink socket of type %d, attempting SOCK_RAWfailed to create netlink socket (%d)failed to bind netlink socket (%d)failed to set netlink socket SO_PASSCRED option (%d)failed to create netlink control pipefailed to create netlink event thread (%d)linux_netlink_socket != -1libusb/libusb/os/linux_netlink.cnetlink control pipe signal failedACTIONremoveaddunknown device action %sSUBSYSTEMusbDEVTYPEusb_deviceBUSNUMDEVNUMDEVICEDEVPATHerror receiving message from netlink (%d)invalid netlink message lengthignoring netlink message from unknown group/PID (%u/%u)ignoring netlink message with no sender credentialsignoring netlink message with non-zero sender UID %uyesnonetlink hotplug found device busnum: %hhu, devaddr: %hhu, sys_name: %s, removed: %snetlink event thread enteringnetlink control pipe read failednetlink event thread exitinglinux_netlink_event_thread_mainlinux_netlink_read_messagelinux_netlink_parselinux_netlink_stop_event_monitorlinux_netlink_stop_event_monitorlinux_netlink_start_event_monitorset_fd_cloexec_nbGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rodata.comment.gnu.attributes@ + %+0p=@9 8P B(P0X0"@;ao"{"q%T (X(XXAVk "  ! !  $P t0| B ]` o@     l $* KTZgnv}linux_netlink.cusbi_mutex_static_lockusbi_mutex_static_unlocklinux_netlink_socketnetlink_control_pipelibusb_linux_event_threadset_fd_cloexec_nb__FUNCTION__.5227__FUNCTION__.5235linux_netlink_event_thread_main__PRETTY_FUNCTION__.5244__FUNCTION__.5245netlink_message_parselinux_netlink_parse__FUNCTION__.5266linux_netlink_read_message__FUNCTION__.5283__FUNCTION__.5291_gp_disppthread_mutex_lockpthread_mutex_unlockfcntl__errno_locationusbi_loglinux_netlink_start_event_monitorsocketbindsetsockoptusbi_pipepthread_createcloselinux_netlink_stop_event_monitor__assertwritepthread_joinstrlenstrncmpstrcmpstrtoulstrrchrrecvmsglinux_device_disconnectedlinux_hotplug_enumeratereadlinux_hotplug_lockpolllinux_netlink_hotplug_poll( 4%X\ % % , %L TX `d! p!% %  %   ! !%L X%x  %  ! !% % , %L TX `d! p!%#  #% $( 0@ L %|  ! !%# #%    %, 48 @D! 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(  D  @D @x@@0 0 8 8 @D    ( @@ (!0H0( 0)H-8.00h828P4XX;X@(8F8I@M,0N8P Q`8Up(VT0X0@ZL8\$8]@_T@a@d@g@(g(hD8i0jx@lXHnHq @s tl(u0(vHy\(zl`xHl00H0@8P0Pd@ %s/usbdev%d.%d%s/%03d/%03dFile doesn't exist, wait %d ms and try againlibusb couldn't open USB device %s: %slibusb requires write access to USB device nodes.usbdev%d.%dfound: %s/dev/bus/usb/proc/bus/usb/devfound usbfs at %smonotonic clock doesn't work, errno %duname failed, errno %d%d.%d.%dfailed to parse uname release '%s'reported kernel version is %scould not find usbfsbulk continuation flag supportedzero length packet flag supportedmax iso packet length is (likely) %u bytes/sys/bus/usb/devicessysfs not mountedsysfs can relate devicessysfs has complete descriptorserror starting hotplug event monitorinit_count != 0libusb/libusb/os/linux_usbfs.c%s/%s/%sopen %s failed ret=%d errno=%dopen %s failed errno=%drfdopen %s failed errno=%d%dfscanf %s returned %d, errno=%d%s contains a negative valuebConfigurationValueread bConfigurationValue failed ret=%d errno=%ddevice unconfigurednot null-terminated?no configuration value?error converting '%s' to integergetting address for device: %s detached: %d/dev/bus/usb/%hhu/%hhu/proc/bus/usb/%hhu/%hhuscan %sbusnumdevnumbus=%d dev=%dshort descriptor read %d/2bbbLength overflow by %d bytesshort descriptor read %d/%dbbwbbbbbdescriptor is not a config desc (type 0x%02x)config length mismatch wTotalLength %d real %dinvalid wTotalLength %dget_configuration failed ret=%d errno=%dactive cfg 0? assuming unconfigured devicespeedUnknown device speed: %d Mbpsdescriptorsread descriptor failed ret=%d errno=%dshort descriptor read (%d)Missing rw usbfs access; cannot determine active configuration descriptorusbCan not parse sysfs_dir: %s, no parent infousb%sparent_dev %s not enumerated yet, enumerating nowDev %p (%s) has parent %p (%s) port %dbusnum %d devaddr %d session_id %ldsession_id %ld already existsallocating new device for %d/%d (session %ld)device not found for session %x%s/%03d%sopendir '%s' failed, errno=%dunknown dir entry %sfailed to enumerate dir entry %sopendir buses failed errno=%dopendir devices failed errno=%dopen failed with no device, but device still attachedgetcap not availablegetcap failed (%d)failed, error %d errno %dclaim interface failed, error %d errno %drelease interface failed, error %d errno %dsetintf failed error %d errno %dclear_halt failed error %d errno %dreset failed error %d errno %dfailed to re-claim interface %d after reset: %sstreams-ioctl failed error %d errno %dalloc dev mem failed errno %dfree dev mem failed errno %dget driver failed error %d errno %dusbfsdetach failed error %d errno %dattach failed error %d errno %ddisconnect-and-claim failed errno %dURB not found --> assuming ready to be reapedDevice not found for URB --> assuming ready to be reapedunrecognised discard errno %dneed %d urbs for new transfer with length %dsubmiturb failed error %d errno=%dfirst URB failed, easy peasyreporting successful submission but waiting for %d discards before reporting erroriso packet length of %u bytes exceeds maximum of %u bytessubmiturb failed, transfer too largesubmiturb failed, iso packet length too largeunknown endpoint type %d\ 4 handling completion status %d of bulk urb %d/%dabnormal reap: urb status %dreceived %d bytes of surplus datamoving surplus data from offset %d to offset %dabnormal reap: last URB handled, reportingdevice removeddetected endpoint stalloverflow, actual_length=%dlow level error %dunrecognised urb status %dlast URB in transfer --> complete!short transfer %d/%d --> complete!could not locate urb!handling completion status %d of iso urb %d/%doverflow errorlow-level USB error %dCANCEL: urb status %dCANCEL: last URB handled, reportinghandling completion status %dcancel: unrecognised urb status %dunsupported control requestcontrol overflow errorlow-level bus error occurredreap failed error %d errno=%durb type=%d status=%d transferred=%dunrecognised endpoint type %xcannot find handle for fd %dLinux usbfsop_handle_eventsreap_for_handlehandle_control_completionhandle_iso_completionhandle_bulk_completionop_clear_transfer_privop_submit_transfersubmit_control_transfersubmit_iso_transfersubmit_bulk_transferdiscard_urbsdetach_kernel_driver_and_claimop_attach_kernel_driverop_detach_kernel_driverop_kernel_driver_activeop_dev_mem_freeop_dev_mem_allocdo_streams_ioctlop_reset_deviceop_clear_haltop_set_interfacerelease_interfaceclaim_interfaceop_set_configurationop_get_configurationop_opensysfs_get_device_listusbfs_get_device_listusbfs_scan_busdirlinux_device_disconnectedlinux_enumerate_devicelinux_get_parent_infoinitialize_deviceusbfs_get_active_configseek_to_next_configseek_to_next_descriptorlinux_get_device_addresssysfs_get_active_config__read_sysfs_attr_open_sysfs_attrop_exitop_initget_kernel_versionfind_monotonic_clockfind_usbfs_path_is_usbdev_entry_get_usbfs_fd\DQ`Up .0h-VTX0stl]_Tag@ghDijxlXnu0lHd GCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rel.rodata.rel.data.rel.ro.local.comment.gnu.attributes@ ?x% + @0p =8 9 2pBT@P 5( `@\ 5( s0;|o#؀   uX4XMDX]XoP  -C$N(kDq, x004      , ? Qck }P PD< PP  2|D V o!0P p ( X )8D -.=0hV28 n, 4X` ;d M,  F &I<< NNd vQ`~ UpVTh X0P ZL@  \$p, -]> P_T^ pa q d g@ghD@ i( :jxR dlX| nDx X stlu0vDH  #y\1zl F0 X l ~ l @H    28 t H Z8 t  | d h           - 2 ; L U _ h o w             # ( /$ H P f m s z       A     ' ;D  S h }E4            1 Q h linux_usbfs.cusbi_reallocfusbi_mutex_static_lockusbi_mutex_static_unlockusbi_mutex_lockusbi_mutex_unlockusbi_transfer_get_os_privusbfs_pathusbdev_namesmax_iso_packet_lensupports_flag_cloexecsupports_flag_bulk_continuationsupports_flag_zero_packetmonotonic_clkidsysfs_can_relate_devicessysfs_has_descriptorsinit_countlinux_hotplug_startstop_lock_open_get_usbfs_fd__FUNCTION__.5260_device_priv_device_handle_priv_is_usbdev_entry__FUNCTION__.5275check_usb_vfsfind_usbfs_path__FUNCTION__.5295find_monotonic_clock__FUNCTION__.5301get_kernel_version__FUNCTION__.5308kernel_version_geop_init__FUNCTION__.5321linux_start_event_monitorlinux_scan_deviceslinux_stop_event_monitorop_exit__PRETTY_FUNCTION__.5325linux_default_scan_devicesop_hotplug_poll_open_sysfs_attr__FUNCTION__.5346__read_sysfs_attr__FUNCTION__.5357op_get_device_descriptorsysfs_get_active_config__FUNCTION__.5373__FUNCTION__.5383seek_to_next_descriptor__FUNCTION__.5392seek_to_next_config__FUNCTION__.5402op_get_config_descriptor_by_valueop_get_active_config_descriptorop_get_config_descriptorusbfs_get_active_config__FUNCTION__.5449initialize_device__FUNCTION__.5469linux_get_parent_info__FUNCTION__.5483sysfs_scan_device__FUNCTION__.5498__FUNCTION__.5516usbfs_scan_busdir__FUNCTION__.5528usbfs_get_device_list__FUNCTION__.5539sysfs_get_device_list__FUNCTION__.5559op_open__FUNCTION__.5571op_closeop_get_configuration__FUNCTION__.5581op_set_configuration__FUNCTION__.5589claim_interface__FUNCTION__.5596release_interface__FUNCTION__.5603op_set_interface__FUNCTION__.5612op_clear_halt__FUNCTION__.5620op_reset_device__FUNCTION__.5632detach_kernel_driver_and_claimdo_streams_ioctl__FUNCTION__.5646op_alloc_streamsop_free_streamsop_dev_mem_alloc__FUNCTION__.5664op_dev_mem_free__FUNCTION__.5670op_kernel_driver_active__FUNCTION__.5678op_detach_kernel_driver__FUNCTION__.5687op_attach_kernel_driver__FUNCTION__.5695__FUNCTION__.5706op_claim_interfaceop_release_interfaceop_destroy_devicediscard_urbs__FUNCTION__.5732free_iso_urbssubmit_bulk_transfer__FUNCTION__.5758submit_iso_transfer__FUNCTION__.5782submit_control_transfer__FUNCTION__.5808op_submit_transfer__FUNCTION__.5819op_cancel_transferop_clear_transfer_priv__FUNCTION__.5842handle_bulk_completion__FUNCTION__.5850handle_iso_completion__FUNCTION__.5883handle_control_completion__FUNCTION__.5917reap_for_handle__FUNCTION__.5939op_handle_events__FUNCTION__.5961op_clock_gettime_gp_dispreallocfreepthread_mutex_lockpthread_mutex_unlocklinux_hotplug_lockopensnprintf__errno_locationusbi_lognanosleepstrerrorsscanfopendirreaddirclosedirclock_gettimeunamestat__assertlinux_netlink_start_event_monitorlinux_netlink_stop_event_monitorlinux_netlink_hotplug_pollfdopenclosefscanffclosereadstrtollinux_get_device_addressstrncmpusbi_parse_descriptormemcpyioctlstrdupmemsetstrrchratoistrchrasprintfstrcmplibusb_ref_devicelinux_enumerate_deviceusbi_get_device_by_session_idlibusb_unref_deviceusbi_alloc_deviceusbi_sanitize_deviceusbi_connect_devicelinux_hotplug_enumerateactive_contexts_lockactive_contexts_listlinux_device_disconnectedusbi_disconnect_device__ctype_busbi_add_pollfdusbi_remove_pollfdlibusb_error_namemallocmmapmunmapcallocmemmoveusbi_handle_transfer_cancellationusbi_handle_transfer_completionusbi_handle_disconnectusbi_backend0 <%` l% %  %DHl x% %DHl t % %8 @P X\ d %   ,%H PX% %   % % % % ,%L TX `d p% %   % %( 4% 4 @%   %   8 D% % %   $ , < D L% t |   %  %  $ ,% L T d p% %   %   H T% %   %   ( 4% H T% t |  %  %, 48 @D P%   % %     ,%D L\ dl!%|  #%  %%  $H PX%%h pt |   %  %%   (@ HL TX d%t | %%  %% $ ,0 8L TX `d p%  %%    %%$ ,0 8H P` hx %   %    0 8< DH T%d l   %  %   (%0 8@)%` ht |  *%   %   %DHh pt |%     %     (0*%@ HL T\% % % $D H PX%h px-%  % %D LT%d l  % % %D LP X\ h%   %0 8@%` l% %   %   %< H%l tx  % %  %  %( 4%h pt | %   %   L T \% l t!0!4!t !|! !!/%! !%! !%" ",%"T "\"` "h"l "x%" "" "" "%# # #$ #,#0 #<%#| ## ## #%# #%$ $$ $($, $8%$$$ $$ $$ $%% % %\ %d%l %x%% %% %%% %% %%% && &$%&P &X&\ &d&h &t%& && &&1%' '' '$',1%' '' '' '%( (( (( (( (%( (( )%) )) )) )%))*T *\*` *h*l *x%* ** *%* ** *+ + %+$ +,+L +T+\7%+ ++ ++ ,%,D ,L,P ,X,\ ,h%, ,, ,, ,%---` -h-p%- --9%... ./ //4%/H /P/X%/ //;%04 0@%0h0l0 00%14 1<1D9%2 2%282<2h 2p2x%2 2%2 3%3< 3H%3p 3x3| 33 3%3 44 44 4 %4X4\4 44%5 5%5h 5p5t 5|51%6 66 66 6%6 66 66 66/%7 77$%7x 77%7 7%7 78@ 8L%8 8%8 8%8 99 99 9 %90 9<%9 9%9 99 9: : %:$ :,:T :\:d%: :: :: :%: :; ;%;` ;h;p>%; ;%;;< << <,%> >$%>8 >D%>| >> %> >>%? ?%?0 ?<%? ?? %@ @@ @@ @$%@< @D@LD%@ @@ @@ @%@ @%AA A AA AA A%A A%B BB B$B( B4%BD BP%B BB BB B%B B%C CC$@%CH CT%C| CCB%C C%C C%D D$DT DX D`Dh%Dx D D%D D E EE%E4E8E E EE%E E E%E F%F F$%FL FTFX F`Fd Fp%F F F FF%FFG G$G( G0GL GX%Gt G|G GG G%G G%G G%H HH HH H,%Hl Hx%H HH HH H%I I%I@ IHIL ITIX Id%I I%I I%IIJ JJ( J4%JX Jd%J JJ JJ J%J JK K K%KT K`%K KK KK K%K K%L$ L,L0 L8L< LH%Lp LxLG%L L%L M%M,M0M| M%M M%NNN( N0N4 N@%Nh Nt%N NN NN N%N O O O( O4%O\ Oh%O OOD%O OO OO P%P4 P@%Pd Pp%PPP PQ Q QK%Q, Q4Q<I%Q`QdQ QQ%Q QQ%R$ R( R0R8%Rl RtRx RR R%R R%R R RS%SL SX%Sx S%S SS SS S%S T%T T(T, T4T8 TD%T\ TdT TT U%U8 UD%UpUtU UU%U V%V$ V0%VTVXV VV VV4%V VV%W WW >%WT W\Wd%W WW WW W%X0X4Xp XxX%X XX%X X%X Y%Y0 Y<%Yd Yp%Y Y%Y YY YY Z%ZLZPZ| ZZ%Z Z%Z Z%[ [$%[L [X%[ [%[ [[ [[ [%\$\(\T \\\d%\ \%\ \%] ]%]8 ]@]D ]L]P ]\%]]] ]]%^ ^(%^H ^T%^| ^%^ ^%^ __ _ _ _%_T_X_ __%_ _%_ `%`0 `<%`x `%` `` `` `%aa a4 a<aD%a aaV%a aa %b b %b@ bL%b b%b bb bb b%c< cDcL^%c c%c cc cc c%dL dTd\ %ddd dd%e e$%e e%e e%e e%f f %f4 f@%fh ft%f f%f ff ff g%g@gDg gg_%ggh hh _%hDhHht h|h%h h%h i%i( i0i4 i<i@ iL%iii i%i i%j j$j( j0j4 j@%jxj|j jj%j j%k k(%kP k\%k k%k kk kk k%l ll l,%lXl\l ll%l l%m$ m,m0 m<%mp m|%m m%m m%n n%nL nX%n nn nn n%nno  oo%od op%o o%o o%o p%p, p8%pt p%p pp pp p%q q$qP qXq`%q qq q%r r%r4 r@%r r%r rr rr r%s8 s@sHi%s ssT%sst  tt^%t8 t@tHT%tltpt ttV%t uuk%u0u4uX u`uh%u u%u u%vvv\ vdvl %v vv%wl wx%w w%w ww ww w%x x$%xH xPxT x\x` xl%x x%x xx xx x%y\y`y y%z0 z<%zlzpz zz %z zz%}, }4}8 }@}D }P%}l }x% % %D P%x   %   % %, 8% q%   %  % %     %   % % % $,s%( 4%T `% %   % (%l tx  % %   %L TX `d p% s% q%  $ 0%  % %T `%8 D%h t% % %  $( 4%lp  x%  t%8 @Ht%` hpv%   % 0 8@ % q%HL  % %T \ds%   % H PX %  %4 <@ HL X%   %@ HL TX d%   %0 <%   % $ ,0 <%d lp x| %   %T \` hl x%   %` hl tx %   % q%  %h t%  % % %8<t | %  %   %  %, 48 @D P%   %   (%P X\ dh t%   %, 48 @D P% $( 04 @%p x|  % s%  % %8 @H %\ h%   %P X\ dh t%   % s% $, %@ L%t | %  %  %@ HL TX d% (, 48 D%d p%  % %   %   %D LP X\ h%   %   ,%X d%  % %  %P \%| % % %< DH PT `%   %` hp% % %  (, 8%dh  %< DL%  (, 8% %  %0 <%L P X`% % % %  %8 @P \%x % @` @` @` @` @` @` @` @` @`   @ `          $(,048<@DHLPTX\`dhlptx|release/build/libusb/libusb/descriptor.o0000644000000000000000000006627414261476351017421 0ustar rootrootELFN\4( '课!!0B0B 0B!'<'!'Я,(! 0!!<4848b%0B@0c<$诣0$$@8!@! !,('0<'!'Я,(! 0!!<4840B4B0B8@0c<$诣0$$@8!@! !,('0<'!'د$ !(,(,@! @(@! !$ '('د$!(,04(0 ,B$dCW(Ce`$bC $uC$wCC C $B $B 0B b! 4@ dDcC$BBBb% C$B $B f 0B b! 4@ d(!e!CC$BB$BBb%$BBb%Bb% C$B $B & d0!fd(!edd g @!h!FFEEDD C C$B $B $BB@6(b#!$'(<'!'௿! B @ !@! !' <'!'<8!@DHL L(B@L$@$$F菂$G@! $G'0H$e(@0!8!@! 1$b1$@$$F菂$G,@!   0@!LC*@0L@$$F菂$G@!  0,B @H$ETDP@! (0,B@H$E`DP@! 0@$$F菂$Gh@! $0Hb!H0Lb#L0 b! H$u'0H$e(@0!8!@! 0,B@0@$$F菂$G@! $0@!LC*@0L@$$F菂$G@!  p1$b21$b.1$b*1$b&1 !$$F菂$Gȏ@! 0Hb!H0Lb#L0 b! L(B@H$b#((@ D@ D@ )(@ !@! ,D,C ,@D@$,$(`(!@0!@! D(C !<8'@<'!'Я,(!00B@XM0C #b! B@ !@!  B @# C  D!b!@ !$B @! $B B@!C*@ B @ !@! $B0CC*@0B@ !@! 0@!,('0<'!'LH!PTX\($,T@TB0TB$Bb#0@(!$B@! 00@$$T0CTBb#0b!4X$E48!@! 4C$b4B$P$$F؏$G,@! (4B,B @4BP$$F؏$G쏂@! $$4B@!\C*@4B\P$$F؏$G @! (4B,B!@4BP$$F؏$G0@! $$ZTB$CTC4@4@4@ ,$b4B,4BXb!X4B(b!(4B\b#\X8e'DX$e(@0!8!@! D,B@DP$$F؏$GH@! $$D@!\C*@D\P$$F؏$Gl@! (E$b!E$bE$bE$bDXb!XD(b!(D\b#\\(B@X8b#<<@+<@ !@! @!4C4B@$$4B@ !8<`(!@0!@! 4<C4B@a4B@ !$@! @4@C @@$$k ; C!@b!`P@(!X\$Bt@! $$@L$@ 0C4C$Xb!X($b!(\$b#\ $B 4B@! C*@X4\(B @4C$b 4B@!,b(\(B @( T$B D@! $!LH'P<'!'د$ !((B @!(C b!@ !$B D@! $B(B@!C*@(B @ !@! (B@ !@! !$ '(<'!'<8!@DHLL(B @L$ @$$Fď$G@! $H$EDP@! 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processed, but the device is still connected as far as we knowA cancellation for an in-flight transfer hasn't completed but closing the device handleA cancellation hasn't even been scheduled on the transfer for which the device is closingRemoved transfer %p from the in-flight list because device handle %p closedfalling back to control messagezero bytes returned in ctrl transfer?control failed, error %dactive config %dconfiguration %dinterface %dinterface %d altsetting %dendpoint %xstreams %u eps %deps %dLIBUSB_DEBUGreusing default contextcreated default contextlibusb v%u.%u.%u.%u%snot destroying default contextdestroying default contextsome libusb_devices were leakedapplication left some devices open[timestamp] [threadID] facility level [function call] -------------------------------------------------------------------------------- errorwarninginfodebugunknown[%2d.%06d] [%08x] libusb: %s [%s] libusb: %s [%s] 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Y8core.clist_initlist_addlist_delusbi_mutex_static_lockusbi_mutex_static_unlockusbi_mutex_initusbi_mutex_lockusbi_mutex_unlockusbi_mutex_destroyusbi_tls_key_getlibusb_version_internaldefault_context_refcntdefault_context_locktimestamp_origindiscovered_devs_allocdiscovered_devs_free__FUNCTION__.4692__FUNCTION__.4713__FUNCTION__.4732__FUNCTION__.4764find_endpoint__FUNCTION__.4809__FUNCTION__.4820__FUNCTION__.4829__FUNCTION__.4835__FUNCTION__.4841__FUNCTION__.4850do_close__FUNCTION__.4875__FUNCTION__.4885__FUNCTION__.4894__FUNCTION__.4900__FUNCTION__.4906__FUNCTION__.4913__FUNCTION__.4920__FUNCTION__.4925__FUNCTION__.4929__FUNCTION__.4936__FUNCTION__.4942__FUNCTION__.4956__FUNCTION__.4961__FUNCTION__.4966get_env_debug_level__FUNCTION__.5001first_init.4999__FUNCTION__.5014usbi_log_strhas_debug_header_been_displayed.5042_gp_disppthread_mutex_lockpthread_mutex_unlockpthread_mutex_initpthread_mutex_destroypthread_getspecificusbi_default_contextactive_contexts_lockactive_contexts_listmalloclibusb_unref_devicefreediscovered_devs_appendlibusb_ref_deviceusbi_logreallocusbi_alloc_deviceusbi_backendcalloclibusb_has_capabilityusbi_connect_deviceusbi_hotplug_notificationusbi_disconnect_deviceusbi_sanitize_deviceusbi_device_cache_descriptorusbi_get_device_by_session_idlibusb_get_device_listlibusb_free_device_listlibusb_get_bus_numberlibusb_get_port_numberlibusb_get_port_numbersmemmovelibusb_get_port_pathlibusb_get_parentlibusb_get_device_addresslibusb_get_device_speedlibusb_get_max_packet_sizelibusb_get_active_config_descriptorlibusb_free_config_descriptorlibusb_get_max_iso_packet_sizeusbi_signal_eventwriteusbi_clear_eventreadlibusb_openmemsetlibusb_open_device_with_vid_pidlibusb_get_device_descriptorlibusb_closelibusb_lock_eventslibusb_unlock_eventslibusb_get_devicelibusb_get_configurationlibusb_control_transferlibusb_set_configurationlibusb_claim_interfacelibusb_release_interfacelibusb_set_interface_alt_settinglibusb_clear_haltlibusb_reset_devicelibusb_alloc_streamslibusb_free_streamslibusb_dev_mem_alloclibusb_dev_mem_freelibusb_kernel_driver_activelibusb_detach_kernel_driverlibusb_attach_kernel_driverlibusb_set_auto_detach_kernel_driverlibusb_set_debuglibusb_set_optiongetenvatoilibusb_initusbi_io_initlibusb_exitusbi_hotplug_deregisterlibusb_handle_events_timeoutusbi_io_exitstderrfputsusbi_log_vusbi_get_tidsnprintfvsnprintflibusb_error_namelibusb_get_versionL<P<t= 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processed, but the device is still connected as far as we knowA cancellation for an in-flight transfer hasn't completed but closing the device handleA cancellation hasn't even been scheduled on the transfer for which the device is closingRemoved transfer %p from the in-flight list because device handle %p closedfalling back to control messagezero bytes returned in ctrl transfer?control failed, error %dactive config %dconfiguration %dinterface %dinterface %d altsetting %dendpoint %xstreams %u eps %deps %dLIBUSB_DEBUGreusing default contextcreated default contextlibusb v%u.%u.%u.%u%snot destroying default contextdestroying default contextsome libusb_devices were leakedapplication left some devices open[timestamp] [threadID] facility level [function call] -------------------------------------------------------------------------------- errorwarninginfodebugunknown[%2d.%06d] [%08x] libusb: %s [%s] libusb: %s [%s] 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U!,('0@L@@<@   `   h  ,   8   (  T@80X@8080@@H(((  (((  (-8/$@1X(28`@(00 ((0@H@L(000 0failed to read monotonic clock, errno=%dtransfer %pcancel transfer failed error %dfailed to set timer for next timeout, errno=%dinterpreting short transfer as errortransfer %p has callback %pdetected timeout cancellationsomeone else is closing a deviceasync cancel failed %d errno=%dpoll fds modified, reallocatingctx->pollfds_cnt >= internal_nfdslibusb/libusb/io.cpoll() %d fds with timeout in %dmspoll() returned %dpoll failed %d err=%dcaught a fish on the event pipesomeone updated the poll fdssomeone purposely interruptedsomeone unregistered a hotplug cbsomeone is closing a devicehotplug message receivedbackend handle_transfer_completion failed with error %dbackend handle_events failed with error %ddoing our own event handlingevent handler was active but went away, retryinganother thread is doing event handlingno URBs, no timeout!no URB with timeout or all handled by OS; no timeout!first timeout already expirednext timeout in %d.%06dsadd fd %d events %dremove fd %dcouldn't find fd %d to removedevice %d.%dcancelling transfer %p from disconnectusbi_handle_disconnectusbi_remove_pollfdusbi_add_pollfdlibusb_get_next_timeoutlibusb_handle_events_timeout_completedhandle_eventshandle_eventshandle_timeoutlibusb_interrupt_event_handlerlibusb_event_handler_activelibusb_event_handling_oklibusb_try_lock_eventsusbi_handle_transfer_cancellationusbi_handle_transfer_completionlibusb_cancel_transferlibusb_submit_transferlibusb_free_transferlibusb_alloc_transfercalculate_timeoutGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rodata.comment.gnu.attributes@X` z %X+X0pX=X9  B`XP```X0f;aofg qi: q{LLxx'<09\IXY`XkX~Xh\h,XX\8X` X Td1@ C( U gX(d\    "   h L -, ?-TN `/$4w1X28    @(l'  L    .    @I\o';NH[eMu{ DOLT@h"94HW|@u!Dd"$P|)%<&dQ'$j(,)+,,($<OGDgALDdEDpEtF(G(LL6=RPTtdT`io.clist_initlist_addlist_add_taillist_dellist_cutusbi_mutex_initusbi_mutex_lockusbi_mutex_unlockusbi_mutex_trylockusbi_mutex_destroyusbi_cond_initusbi_cond_waitusbi_cond_broadcastusbi_cond_destroyusbi_tls_key_createusbi_tls_key_getusbi_tls_key_setusbi_tls_key_deletecalculate_timeout__FUNCTION__.4320__FUNCTION__.4331__FUNCTION__.4336arm_timerfd_for_next_timeoutadd_to_flying_listremove_from_flying_list__FUNCTION__.4365__FUNCTION__.4371__FUNCTION__.4390__FUNCTION__.4397__FUNCTION__.4408__FUNCTION__.4419__FUNCTION__.4424__FUNCTION__.4429handle_timeout__FUNCTION__.4446handle_timeouts_lockedhandle_timeoutshandle_events__FUNCTION__.4474__PRETTY_FUNCTION__.4475get_next_timeout__FUNCTION__.4507__FUNCTION__.4540usbi_fd_notification__FUNCTION__.4561__FUNCTION__.4568__FUNCTION__.4590_gp_disppthread_mutex_initpthread_mutex_lockpthread_mutex_unlockpthread_mutex_trylockpthread_mutex_destroypthread_cond_initpthread_cond_waitpthread_cond_broadcastpthread_cond_destroypthread_key_createpthread_getspecificpthread_setspecificpthread_key_deleteusbi_io_initusbi_pipeusbi_add_pollfdcloseusbi_io_exitusbi_remove_pollfdfreeusbi_backend__errno_locationusbi_loglibusb_alloc_transfercalloclibusb_free_transferlibusb_submit_transferlibusb_ref_devicelibusb_cancel_transferlibusb_transfer_set_stream_idlibusb_transfer_get_stream_idusbi_handle_transfer_completionlibusb_unref_deviceusbi_handle_transfer_cancellationusbi_signal_transfer_completionusbi_signal_eventlibusb_try_lock_eventsusbi_default_contextlibusb_lock_eventslibusb_unlock_eventslibusb_event_handling_oklibusb_event_handler_activelibusb_interrupt_event_handlerlibusb_lock_event_waiterslibusb_unlock_event_waiterslibusb_wait_for_eventusbi_cond_timedwait__assertusbi_clear_eventpollusbi_hotplug_deregisterusbi_hotplug_matchlibusb_get_next_timeoutlibusb_handle_events_timeout_completedlibusb_handle_events_timeoutlibusb_handle_eventslibusb_handle_events_completedlibusb_handle_events_lockedlibusb_pollfds_handle_timeoutslibusb_set_pollfd_notifiersmalloclibusb_get_pollfdslibusb_free_pollfdsusbi_handle_disconnect::l t|%::; ;%: :0< <<%`:d:= =%::> >%::8? D?%h:l:@ @%::A A%,:0:TB `B%::C C%::D D%8:<:`E lE%::F F%::G $G%H:L:|  %  %  % %, 4< %X `h% % % %   % 4I @I% J J% K K% K K% , 4 <% X ` h%   %   %   %   % D: H: |M M% K K% K K%   % ( 0 8% T \ d%   %   %   % $N 0N% T: X: O 0P <P%\5 d5h5 p5tQ Q%::O  S ,S%x  %5 55 5Q Q%::L5 T5X5 `5dQ pQ%N N%  %N (N%:: %d lt% % %p x%  %::D LT %  %  %@:D:5 55 5Q Q%  %  ( %d lt %  % %  (0 %L T\ %  %O V $V%@ HP %p x%::5 55 5Q Q%0 8@ %O 5  5$5 ,50Q <Q%d5 l5p5 x5|Q Q%  %::  %`P lP%5 55 5Q Q%  % $, %5 55 5Q Q% `5 h5 l5 t5 xQ Q% T T%! [ ![%!D:!H:! !! %! !! %"5 " 5"$5 ",5"0Q "<Q%"PZ "\Z%"xZ "Z%":":# # # %# ##%#^ $^%$ $$$, %$P:$T:$` $ $$ %$ $$ %%5 %$5%(5 %05%4Q %@Q%%h %p%x%%:%:&` &$ &,&4 %&d:&h:&` & && %& &' %'  '('0%'L 'T'\ %':':'` ' '' %( ( (( %(L5 (T5(X5 (`5(dQ (pQ%(:(:(` ( )) %)< )D)L %)p5 )x5)|5 )5)Q )Q%):):*` * 5 *(5*,5 *45*8Q *DQ%*` *h*p %+4^ +@^%+\ +d+l %+:+:+` + ++ %,:, :,P` ,t ,|, %,:,:,` -$ -,-4%-pi -|i%-:-:.0W .<W%.P .P%.5 .5.5 .5.Q .Q%/$:/(:/tO 0 00'%1X:1\:1` 1 11 %1 11)%2 22 %28:2<:2 22%2 22%3 33 %3D5 3L53P5 3X53\Q 3hQ%3N 3N%35 3535 3545 454 j 4j%48S 4DS%4 44 %6k 6(k%6l 6t6| %7<5 7D57H5 7P57TQ 7`Q%7xl 7l%75 7575 757Q 7Q%7 77*%8$P 80P%8lP 8xP%85 8585 858Q 8Q%9 99%9,5 945985 9@59DQ 9PQ%9l 9t9| %95 9595 959Q 9Q%:5 : 5:5 :5:Q :(Q%:x5 :5:5 :5:Q :Q%:5 :5:5 ;5;Q ;Q%;H5 ;P5;T5 ;\5;`Q ;lQ%; ;; %; ;; %< << %<(O n >,n%>d[ >p[%> >> %>N >N%?$O ?5 ?5?5 ?5?Q ?Q%? ?@%@(:@,:@`o @lo%A:A:A` A AB.%B( B0B8*%BP_ B\_%B5 B5B5 B5BQ BQ%B BB+%Cb C b%C(f C4f%Cld Cxd%Cg Cg%C5 C5C5 C5CQ CQ%C5 C5C5 D5DQ DQ%D,h D8h%DXg Ddg%D DD*%D:D:Ep E p%ED:EH:Ep Ep%E:E:Ep Fp%F(:F,:F`` F FF.%F FF*%F FF+%GD:GH:G` G GG %G GH %H5 H 5H$5 H,5H0Q H<Q%I< IDIL %I5 I5I5 I5IQ IQ%IO IP JP%J$5 J,5J05 J85J<Q JHQ%J5 J5J5 J5KQ K Q%L5 L5L 5 L5LQ L$Q%LL:LP:L` L:L:M^ M^%M:M:Nw N(w%Np5 Nx5N|5 N5NQ NQ%N NN %O  OO%OL OTO\1%Ox OO %O:P:P<5 PD5PH5 PP5PTQ P`Q%P| PP %Q@5 QH5QL5 QT5QXQ QdQ%Q QQ %Q QQ %Q QR1%R  R(R0 %R@N RLN%R:R:R` S S S( %SPS S\S%TH TPTX %T:T:TN TN%T:T:UX5 U`5Ud5 Ul5UpQ U|Q%U UU %V( V0V8 %V VV %W  W(W0 %Wd5 Wl5Wp5 Wx5W|Q WQ%W WW %WO W WX %XZ X$Z% @` @` @H`LRT @U`WXYZ\] _@a`bcdefg h@`pq r@s`tuovJ M@x`yzhotplug.o/ 1657175274 0 0 100644 8356 ` ELF4( '! CC C BC C!''!  C CC BC C!''!BcCBcC@CC!'<'!'௿! @! !' <'!'௿! @! !' '௿! $(,,B@!(b$@!G,B0B@ ,C$BDb!4,B0B@ ,C$BFb!!,B0B @ ,C$B@b!,B,c $(`8!@! !' <'!'Я,(!0480$B\@ !$Bx@! 0BT$BB$BLB0B@@;0$B\@ !$B@! 048$B(@!  0$B\@ !$Bx@!  @$B@ !$B@! @! B$B$C0$BPb0$B\@ !$B@! !,('0<'!'د$ !(,0$$@! @($$F쏂$G@! Z0C,C($B@ !$Bx@! (B @(B$@(C<($B8b (CD($B@b$!$C($B8` !@(!$Bx@! @(@! ($B@ !$B@! !$ '(<'!'ȯ40!8<@D<@.<$b$@)@@@$b$@ D$bD<b$@H$bH<b$@L$bL$b$@P@$$@! @$ 8@B8$$@! $$@$<0C$CD$b$B4B0C$CD0C$CH$b$B4B0C$CH0C$CL$b$B4B 0C$CL0C$C$PC$TC8$B\@ !$Bx@! 8BX$b $C8CX8BXA8$CX$$C8$BP` !@(!$B@! 8$B\@ !$B@! $B $ !$$Fȏ$G$@! @0B0B@K<0B0B@E',8@(!@! ((A$B 8@(!@! (4 , b!B8@(!$$$B(@!  $B (b*@,@ !$@! X@$C XC!!40'8<'!'ȯ40!8<$$@! @8@B8< !$$F$GH@! 8$B\@ !$Bx@! 8BT$B  C <b B4B@0C C$$ B$B $C8$BPb8$B\@ !$B@! $@N8$B@ !$Bx@! 8B @8B$@8C<8$B8b 8CD8$B@b$!(8B 4C8C (@8@! 8$B@ !$B@! !40'8<'!'Я,(!040$B\@ !$Bx@! 0BT$B B$B$<4@ B0B@@( B  !$$F$Gd@!  $B@ !$B@!  @! $ $B$B$ $C0$BPb0$B\@ !$B@! !,('0@x@@x  ( 0(880error allocating hotplug messagenew hotplug cb %p with handle %dderegister hotplug cb %dfreeing hotplug cb %p with handle %dusbi_hotplug_deregisterlibusb_hotplug_deregister_callbacklibusb_hotplug_register_callbackusbi_hotplug_notificationGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rodata.comment.gnu.attributes@@ \ %+0p=`9 LX BPX0;aoK[q$P t xxx"+xX;XM(c u! #      0hQg| P \hotplug.clist_addlist_add_taillist_delusbi_mutex_lockusbi_mutex_unlockusbi_hotplug_match_cb__FUNCTION__.4682__FUNCTION__.4695__FUNCTION__.4708__FUNCTION__.4719_gp_disppthread_mutex_lockpthread_mutex_unlockusbi_hotplug_matchfreeusbi_hotplug_notificationcallocusbi_logusbi_signal_eventlibusb_hotplug_register_callbacklibusb_has_capabilityusbi_default_contextlibusb_get_device_listlibusb_hotplug_deregister_callbacklibusb_free_device_listusbi_hotplug_deregisterx| % %  %h px %  %  % %  ,%  %  %4 <@ HL X%  %\ dl% %  % % ( D P%   % 0 8 @% \ d l %      % ! !% H" T"%   % # #% P T  %      %  ( %  %  (0 % % $, %\`  %8 @D LP \%x % %   % @` "@$strerror.o/ 1657175274 0 0 100644 4844 ` ELF 4(<'!'د$ !((@*(@! ,B@ (@! ,B@($BC$-b($BC$_b ($BC$.b$0$Bb!B@ !($@! @ $B,B@,B@$C!!$ '(<'!'课!#@(B@$ B@b#b!$b!B!'|(@ennlfrruSuccessInput/Output ErrorInvalid parameterAccess denied (insufficient permissions)No such device (it may have been disconnected)Entity not foundResource busyOperation timed outOverflowPipe errorSystem call interrupted (perhaps due to signal)Insufficient memoryOperation not supported or unimplemented on this platformOther errorGeluktInvoer-/uitvoerfoutOngeldig argumentToegang geweigerd (onvoldoende toegangsrechten)Apparaat bestaat niet (verbinding met apparaat verbroken?)Niet gevondenApparaat of hulpbron is bezigBewerking verlopenWaarde is te grootGebroken pijpOnderbroken systeemaanroepOnvoldoende geheugen beschikbaarBewerking wordt niet ondersteundAndere foutSuccèsErreur d'entrée/sortieParamètre invalideAccès refusé (permissions insuffisantes)Périphérique introuvable (peut-être déconnecté)Elément introuvableResource déjà occupéeOperation expiréeDébordementErreur de pipeAppel système abandonné (peut-être à cause d’un signal)Mémoire insuffisanteOpération non supportée or non implémentée sur cette plateformeAutre erreurУспехОшибка ввода/выводаНеверный параметрДоступ запрещён (не хватает прав)Устройство отсутствует (возможно, оно было отсоединено)Элемент не найденРесурс занятИстекло время ожидания операцииПереполнениеОшибка каналаСистемный вызов прерван (возможно, сигналом)Память исчерпанаОперация не поддерживается данной платформойНеизвестная ошибка ,@l0lx$DXl|  L,D0,HGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rodata.rel.data.rel.local.comment.gnu.attributes@` l%+0p=@9 BP@\ @X   l0 0;uo k {@    .    DU^eqstrerror.cusbi_localeusbi_locale_supportedusbi_localized_errorslibusb_setlocale_gp_dispstrlenstrncasecmplibusb_strerror8 D%` l%  (%    @          $ ( , 0 4 8 < @ D H L P T X \ ` d h l p t x |                             sync.o/ 1657175274 0 0 100644 7700 ` ELFP4( '课!!0B0B 0B!''!B $B!'<'!'Я,(!0@!(! !@D48< $04C8C<@ !$B@! @!C @ !$B@! @!C$@ !$B@! @!C!,('0<'!'د$ !(,040(,C(@(@(<C(0C @B@ !$B@! $B@!(C(8C(4C!$ '('! ! CC$C$CC C CC!'<'!'௿! @! !' <'!'Я,(!00B $C0B !$$F$G@! !,('0<'!'ȯ40!88B 8BB$B$2$ @! ((A%($b (@! $$$F܏$G@! 8@!  B@!40'8<'!'D@<!H@!(! !X`LPT04,HB$BB@ !$B@! @$ !@! $$@$4$B@ !@! ((@ $@! $LPT04(`0!@8!$B@! L@($D\4`(!@0!@! ',d$H($G܏$B@! $$C$@!  A $@!  q$$B@! LA\$$BT@! @!$B !`(!@0!@! $B ,C`&$Btb!B\!@$B /$ +$ '$ #$ $ HB$B$c @ !$$Fď$GX@! $ $@!  !D@<'H<'!'D@! H!PT`L80HB$BB@ !$B@! @$ !@! ,,@$LT$cܯ'0\,H@0!P$B@! ,8C,@! ((A ,@! (],$B@! X@,CXC,B ,C`"$Bb!B\!@(/$(+$('$(#$($(HB$B,c @ !$$F$GX@! $(,@! (!D@'H<'!'Я,(! 0!8<44@D$0@(!8<$B 4@! !,('0<'!'Я,(! 0!8<44@D$0@(!8<$B 4@! !,('0@T@0(@ 08H 4H00actual_length=%dlibusb_handle_events failed: %s, cancelling transfer and retryingunrecognised status code %d $ @ P ` p X d t do_sync_bulk_transferlibusb_control_transfersync_transfer_wait_for_completionsync_transfer_cbGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rel.rodata.comment.gnu.attributes@ d%+0p=9 D`BhTp P p \0;eou` 04TT8<8VsX X"   4     /8LUtX T sync.clibusb_cpu_to_le16libusb_control_transfer_get_datalibusb_fill_control_setuplibusb_fill_control_transferlibusb_fill_bulk_transferusbi_tls_key_getsync_transfer_cb__FUNCTION__.4273sync_transfer_wait_for_completion__FUNCTION__.4281__FUNCTION__.4307do_sync_bulk_transfer__FUNCTION__.4329_gp_disppthread_getspecificusbi_loglibusb_handle_events_completedlibusb_error_namelibusb_cancel_transferlibusb_control_transferlibusb_alloc_transfermalloclibusb_free_transfermemcpylibusb_submit_transferlibusb_bulk_transferlibusb_interrupt_transfer  %H PX% %l t|% %< DH PT `% %0 <%T \` hl x% %T \d % %  %!  !%L T\%" "%   %# #%4! @!%\ dl% %" "%        % ! !% 4 8   %  %   H P X % x# #% ! !%   % 4 <      % ! ,!% T X   %  X `h% @` @$`%t x |            linux_usbfs.o/ 1657175274 0 0 100644 79384 ` ELFհ4(<'!'د$ !(,(,@! @(@! !$ '(<'!'௿! @! !' <'!'௿! @! !' <'!'௿! @! !' <'!'௿! @! !' 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PB$B4c@ !$$F|$G@! $!LHD'P<'!'<8!@DHL$@$B8@ !$BD@! $$Db!0,0B@L$BL@B4$B(($B@! ,,C0Bb(B $B(($C@$B0b,@ ,C0Bb0B@$$Fh$G<@! 0B0B0B@^(B$C,B` !@(!@! ,$C$B@! (B$BP@(B$B @!(B$B(` !@(!@! $B@! ,B0B@($B@!  @(@!  ($B@!  @ $b $b @$$B$$Hb+@L@ @$B8@ !$B@!  !<8'@<'!'௿! $ @$CB @ !$@!  !$@! $!' (  D  @D @x@@0 0 8 8 @D    ( @@ (!0H0( 0)H-8.00h828P4XX;X@(8F8I@M,0N8P Q`8Up(VT0X0@ZL8\$8]@_T@a@d@g@(g(hD8i0jx@lXHnHq @s tl(u0(vHy\(zl`xHl00H0@8P0Pd@ %s/usbdev%d.%d%s/%03d/%03dFile doesn't exist, wait %d ms and try againlibusb couldn't open USB device %s: %slibusb requires write access to USB device nodes.usbdev%d.%dfound: %s/dev/bus/usb/proc/bus/usb/devfound usbfs at %smonotonic clock doesn't work, errno %duname failed, errno %d%d.%d.%dfailed to parse uname release '%s'reported kernel version is %scould not find usbfsbulk continuation flag supportedzero length packet flag supportedmax iso packet length is (likely) %u bytes/sys/bus/usb/devicessysfs not mountedsysfs can relate devicessysfs has complete descriptorserror starting hotplug event monitorinit_count != 0libusb/libusb/os/linux_usbfs.c%s/%s/%sopen %s failed ret=%d errno=%dopen %s failed errno=%drfdopen %s failed errno=%d%dfscanf %s returned %d, errno=%d%s contains a negative valuebConfigurationValueread bConfigurationValue failed ret=%d errno=%ddevice unconfigurednot null-terminated?no configuration value?error converting '%s' to integergetting address for device: %s detached: %d/dev/bus/usb/%hhu/%hhu/proc/bus/usb/%hhu/%hhuscan %sbusnumdevnumbus=%d dev=%dshort descriptor read %d/2bbbLength overflow by %d bytesshort descriptor read %d/%dbbwbbbbbdescriptor is not a config desc (type 0x%02x)config length mismatch wTotalLength %d real %dinvalid wTotalLength %dget_configuration failed ret=%d errno=%dactive cfg 0? assuming unconfigured devicespeedUnknown device speed: %d Mbpsdescriptorsread descriptor failed ret=%d errno=%dshort descriptor read (%d)Missing rw usbfs access; cannot determine active configuration descriptorusbCan not parse sysfs_dir: %s, no parent infousb%sparent_dev %s not enumerated yet, enumerating nowDev %p (%s) has parent %p (%s) port %dbusnum %d devaddr %d session_id %ldsession_id %ld already existsallocating new device for %d/%d (session %ld)device not found for session %x%s/%03d%sopendir '%s' failed, errno=%dunknown dir entry %sfailed to enumerate dir entry %sopendir buses failed errno=%dopendir devices failed errno=%dopen failed with no device, but device still attachedgetcap not availablegetcap failed (%d)failed, error %d errno %dclaim interface failed, error %d errno %drelease interface failed, error %d errno %dsetintf failed error %d errno %dclear_halt failed error %d errno %dreset failed error %d errno %dfailed to re-claim interface %d after reset: %sstreams-ioctl failed error %d errno %dalloc dev mem failed errno %dfree dev mem failed errno %dget driver failed error %d errno %dusbfsdetach failed error %d errno %dattach failed error %d errno %ddisconnect-and-claim failed errno %dURB not found --> assuming ready to be reapedDevice not found for URB --> assuming ready to be reapedunrecognised discard errno %dneed %d urbs for new transfer with length %dsubmiturb failed error %d errno=%dfirst URB failed, easy peasyreporting successful submission but waiting for %d discards before reporting erroriso packet length of %u bytes exceeds maximum of %u bytessubmiturb failed, transfer too largesubmiturb failed, iso packet length too largeunknown endpoint type %d\ 4 handling completion status %d of bulk urb %d/%dabnormal reap: urb status %dreceived %d bytes of surplus datamoving surplus data from offset %d to offset %dabnormal reap: last URB handled, reportingdevice removeddetected endpoint stalloverflow, actual_length=%dlow level error %dunrecognised urb status %dlast URB in transfer --> complete!short transfer %d/%d --> complete!could not locate urb!handling completion status %d of iso urb %d/%doverflow errorlow-level USB error %dCANCEL: urb status %dCANCEL: last URB handled, reportinghandling completion status %dcancel: unrecognised urb status %dunsupported control requestcontrol overflow errorlow-level bus error occurredreap failed error %d errno=%durb type=%d status=%d transferred=%dunrecognised endpoint type %xcannot find handle for fd %dLinux usbfsop_handle_eventsreap_for_handlehandle_control_completionhandle_iso_completionhandle_bulk_completionop_clear_transfer_privop_submit_transfersubmit_control_transfersubmit_iso_transfersubmit_bulk_transferdiscard_urbsdetach_kernel_driver_and_claimop_attach_kernel_driverop_detach_kernel_driverop_kernel_driver_activeop_dev_mem_freeop_dev_mem_allocdo_streams_ioctlop_reset_deviceop_clear_haltop_set_interfacerelease_interfaceclaim_interfaceop_set_configurationop_get_configurationop_opensysfs_get_device_listusbfs_get_device_listusbfs_scan_busdirlinux_device_disconnectedlinux_enumerate_devicelinux_get_parent_infoinitialize_deviceusbfs_get_active_configseek_to_next_configseek_to_next_descriptorlinux_get_device_addresssysfs_get_active_config__read_sysfs_attr_open_sysfs_attrop_exitop_initget_kernel_versionfind_monotonic_clockfind_usbfs_path_is_usbdev_entry_get_usbfs_fd\DQ`Up .0h-VTX0stl]_Tag@ghDijxlXnu0lHd GCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rel.rodata.rel.data.rel.ro.local.comment.gnu.attributes@ ?x% + @0p =8 9 2pBT@P 5( `@\ 5( s0;|o#؀   uX4XMDX]XoP  -C$N(kDq, x004      , ? Qck }P PD< PP  2|D V o!0P p ( X )8D -.=0hV28 n, 4X` ;d M,  F &I<< NNd vQ`~ UpVTh X0P ZL@  \$p, -]> P_T^ pa q d g@ghD@ i( :jxR dlX| nDx X stlu0vDH  #y\1zl F0 X l ~ l @H    28 t H Z8 t  | d h           - 2 ; L U _ h o w             # ( /$ H P f m s z       A     ' ;D  S h }E4            1 Q h linux_usbfs.cusbi_reallocfusbi_mutex_static_lockusbi_mutex_static_unlockusbi_mutex_lockusbi_mutex_unlockusbi_transfer_get_os_privusbfs_pathusbdev_namesmax_iso_packet_lensupports_flag_cloexecsupports_flag_bulk_continuationsupports_flag_zero_packetmonotonic_clkidsysfs_can_relate_devicessysfs_has_descriptorsinit_countlinux_hotplug_startstop_lock_open_get_usbfs_fd__FUNCTION__.5260_device_priv_device_handle_priv_is_usbdev_entry__FUNCTION__.5275check_usb_vfsfind_usbfs_path__FUNCTION__.5295find_monotonic_clock__FUNCTION__.5301get_kernel_version__FUNCTION__.5308kernel_version_geop_init__FUNCTION__.5321linux_start_event_monitorlinux_scan_deviceslinux_stop_event_monitorop_exit__PRETTY_FUNCTION__.5325linux_default_scan_devicesop_hotplug_poll_open_sysfs_attr__FUNCTION__.5346__read_sysfs_attr__FUNCTION__.5357op_get_device_descriptorsysfs_get_active_config__FUNCTION__.5373__FUNCTION__.5383seek_to_next_descriptor__FUNCTION__.5392seek_to_next_config__FUNCTION__.5402op_get_config_descriptor_by_valueop_get_active_config_descriptorop_get_config_descriptorusbfs_get_active_config__FUNCTION__.5449initialize_device__FUNCTION__.5469linux_get_parent_info__FUNCTION__.5483sysfs_scan_device__FUNCTION__.5498__FUNCTION__.5516usbfs_scan_busdir__FUNCTION__.5528usbfs_get_device_list__FUNCTION__.5539sysfs_get_device_list__FUNCTION__.5559op_open__FUNCTION__.5571op_closeop_get_configuration__FUNCTION__.5581op_set_configuration__FUNCTION__.5589claim_interface__FUNCTION__.5596release_interface__FUNCTION__.5603op_set_interface__FUNCTION__.5612op_clear_halt__FUNCTION__.5620op_reset_device__FUNCTION__.5632detach_kernel_driver_and_claimdo_streams_ioctl__FUNCTION__.5646op_alloc_streamsop_free_streamsop_dev_mem_alloc__FUNCTION__.5664op_dev_mem_free__FUNCTION__.5670op_kernel_driver_active__FUNCTION__.5678op_detach_kernel_driver__FUNCTION__.5687op_attach_kernel_driver__FUNCTION__.5695__FUNCTION__.5706op_claim_interfaceop_release_interfaceop_destroy_devicediscard_urbs__FUNCTION__.5732free_iso_urbssubmit_bulk_transfer__FUNCTION__.5758submit_iso_transfer__FUNCTION__.5782submit_control_transfer__FUNCTION__.5808op_submit_transfer__FUNCTION__.5819op_cancel_transferop_clear_transfer_priv__FUNCTION__.5842handle_bulk_completion__FUNCTION__.5850handle_iso_completion__FUNCTION__.5883handle_control_completion__FUNCTION__.5917reap_for_handle__FUNCTION__.5939op_handle_events__FUNCTION__.5961op_clock_gettime_gp_dispreallocfreepthread_mutex_lockpthread_mutex_unlocklinux_hotplug_lockopensnprintf__errno_locationusbi_lognanosleepstrerrorsscanfopendirreaddirclosedirclock_gettimeunamestat__assertlinux_netlink_start_event_monitorlinux_netlink_stop_event_monitorlinux_netlink_hotplug_pollfdopenclosefscanffclosereadstrtollinux_get_device_addressstrncmpusbi_parse_descriptormemcpyioctlstrdupmemsetstrrchratoistrchrasprintfstrcmplibusb_ref_devicelinux_enumerate_deviceusbi_get_device_by_session_idlibusb_unref_deviceusbi_alloc_deviceusbi_sanitize_deviceusbi_connect_devicelinux_hotplug_enumerateactive_contexts_lockactive_contexts_listlinux_device_disconnectedusbi_disconnect_device__ctype_busbi_add_pollfdusbi_remove_pollfdlibusb_error_namemallocmmapmunmapcallocmemmoveusbi_handle_transfer_cancellationusbi_handle_transfer_completionusbi_handle_disconnectusbi_backend0 <%` l% %  %DHl x% %DHl t % %8 @P X\ d %   ,%H PX% %   % % % % ,%L TX `d p% %   % %( 4% 4 @%   %   8 D% % %   $ , < D L% t |   %  %  $ ,% L T d p% %   %   H T% %   %   ( 4% H T% t |  %  %, 48 @D P%   % %     ,%D L\ dl!%|  #%  %%  $H PX%%h pt |   %  %%   (@ HL TX d%t | %%  %% $ ,0 8L TX `d p%  %%    %%$ ,0 8H P` hx %   %    0 8< DH T%d l   %  %   (%0 8@)%` ht |  *%   %   %DHh pt |%     %     (0*%@ HL T\% % % $D H PX%h px-%  % %D LT%d l  % % %D LP X\ h%   %0 8@%` l% %   %   %< H%l tx  % %  %  %( 4%h pt | %   %   L T \% l t!0!4!t !|! !!/%! !%! !%" ",%"T "\"` "h"l "x%" "" "" "%# # #$ #,#0 #<%#| ## ## #%# #%$ $$ $($, $8%$$$ $$ $$ $%% % %\ %d%l %x%% %% %%% %% %%% && &$%&P &X&\ &d&h &t%& && &&1%' '' '$',1%' '' '' '%( (( (( (( (%( (( )%) )) )) )%))*T *\*` *h*l *x%* ** *%* ** *+ + %+$ +,+L +T+\7%+ ++ ++ ,%,D ,L,P ,X,\ ,h%, ,, ,, ,%---` -h-p%- --9%... ./ //4%/H /P/X%/ //;%04 0@%0h0l0 00%14 1<1D9%2 2%282<2h 2p2x%2 2%2 3%3< 3H%3p 3x3| 33 3%3 44 44 4 %4X4\4 44%5 5%5h 5p5t 5|51%6 66 66 6%6 66 66 66/%7 77$%7x 77%7 7%7 78@ 8L%8 8%8 8%8 99 99 9 %90 9<%9 9%9 99 9: : %:$ :,:T :\:d%: :: :: :%: :; ;%;` ;h;p>%; ;%;;< << <,%> >$%>8 >D%>| >> %> >>%? ?%?0 ?<%? ?? %@ @@ @@ @$%@< @D@LD%@ @@ @@ @%@ @%AA A AA AA A%A A%B BB B$B( B4%BD BP%B BB BB B%B B%C CC$@%CH CT%C| CCB%C C%C C%D D$DT DX D`Dh%Dx D D%D D E EE%E4E8E E EE%E E E%E F%F F$%FL FTFX F`Fd Fp%F F F FF%FFG G$G( G0GL GX%Gt G|G GG G%G G%G G%H HH HH H,%Hl Hx%H HH HH H%I I%I@ IHIL ITIX Id%I I%I I%IIJ JJ( J4%JX Jd%J JJ JJ J%J JK K K%KT K`%K KK KK K%K K%L$ L,L0 L8L< LH%Lp LxLG%L L%L M%M,M0M| M%M M%NNN( N0N4 N@%Nh Nt%N NN NN N%N O O O( O4%O\ Oh%O OOD%O OO OO P%P4 P@%Pd Pp%PPP PQ Q QK%Q, Q4Q<I%Q`QdQ QQ%Q QQ%R$ R( R0R8%Rl RtRx RR R%R R%R R RS%SL SX%Sx S%S SS SS S%S T%T T(T, T4T8 TD%T\ TdT TT U%U8 UD%UpUtU UU%U V%V$ V0%VTVXV VV VV4%V VV%W WW >%WT W\Wd%W WW WW W%X0X4Xp XxX%X XX%X X%X Y%Y0 Y<%Yd Yp%Y Y%Y YY YY Z%ZLZPZ| ZZ%Z Z%Z Z%[ [$%[L [X%[ [%[ [[ [[ [%\$\(\T \\\d%\ \%\ \%] ]%]8 ]@]D ]L]P ]\%]]] ]]%^ ^(%^H ^T%^| ^%^ ^%^ __ _ _ _%_T_X_ __%_ _%_ `%`0 `<%`x `%` `` `` `%aa a4 a<aD%a aaV%a aa %b b %b@ bL%b b%b bb bb b%c< cDcL^%c c%c cc cc c%dL dTd\ %ddd dd%e e$%e e%e e%e e%f f %f4 f@%fh ft%f f%f ff ff g%g@gDg gg_%ggh hh _%hDhHht h|h%h h%h i%i( i0i4 i<i@ iL%iii i%i i%j j$j( j0j4 j@%jxj|j jj%j j%k k(%kP k\%k k%k kk kk k%l ll l,%lXl\l ll%l l%m$ m,m0 m<%mp m|%m m%m m%n n%nL nX%n nn nn n%nno  oo%od op%o o%o o%o p%p, p8%pt p%p pp pp p%q q$qP qXq`%q qq q%r r%r4 r@%r r%r rr rr r%s8 s@sHi%s ssT%sst  tt^%t8 t@tHT%tltpt ttV%t uuk%u0u4uX u`uh%u u%u u%vvv\ vdvl %v vv%wl wx%w w%w ww ww w%x x$%xH xPxT x\x` xl%x x%x xx xx x%y\y`y y%z0 z<%zlzpz zz %z zz%}, }4}8 }@}D }P%}l }x% % %D P%x   %   % %, 8% q%   %  % %     %   % % % $,s%( 4%T `% %   % (%l tx  % %   %L TX `d p% s% q%  $ 0%  % %T `%8 D%h t% % %  $( 4%lp  x%  t%8 @Ht%` hpv%   % 0 8@ % q%HL  % %T \ds%   % H PX %  %4 <@ HL X%   %@ HL TX d%   %0 <%   % $ ,0 <%d lp x| %   %T \` hl x%   %` hl tx %   % q%  %h t%  % % %8<t | %  %   %  %, 48 @D P%   %   (%P X\ dh t%   %, 48 @D P% $( 04 @%p x|  % s%  % %8 @H %\ h%   %P X\ dh t%   % s% $, %@ L%t | %  %  %@ HL TX d% (, 48 D%d p%  % %   %   %D LP X\ h%   %   ,%X d%  % %  %P \%| % % %< DH PT `%   %` hp% % %  (, 8%dh  %< DL%  (, 8% %  %0 <%L P X`% % % %  %8 @P \%x % @` @` @` @` @` @` @` @` @`   @ `          $(,048<@DHLPTX\`dhlptx|linux_netlink.o/1657175274 0 0 100644 14556 ` ELF"4( <'!'௿! @! !' <'!'௿! @! !' <'!'Я,(!044<b$@R0$@!  $b@! B !$$F$G@! $ 4B0$@0!@! @!$b@! B !$$F$G$@! $X40B@R0$@!  $b@! B !$$F$GH@! $, 4B0$@0!@! @!$b@! B !$$F$Gt@! $!!,('0<'!'<8!(,0$($0<4B $4$ $@! @!CC$b+@! C$b!  !$$F؏$G@! $ $ $@! @!CC$b@! B !$$F؏$G@! B@ ! $B@! $$$bC'(` !@(!$ @! $$$b@! B !$$F؏$G@! C'4$` !4$@8!@! $$$b@! B !$$F؏$G,@! k$D@! $$@ !$$F؏$Gd@! M$D(!$F 8!@! $$@6$ !$$F؏$G@! B@ !@! $BB@ !@! $C$B$C!B@ !@! $C$!<8'@<'!'د$ !$C$b$D$E$$G@! $BC'` !@(!$@! @ !$$F$G@! B@ !(!@! B@ !@! $CB@ !@! $BB@ !@! $C$B$C!!$ '(<'!'د$ !(,0(,b!0@! ((0@! @(b!C$=b $B(b!(@! $B(b!((b+@(B@!!$ '(<'!'Я,(!048<@! @<@8@@@D@04$F$B $@!  @$p $E$@! @8$C! $E,@! @  !$$F|$G0@! $?04$FL$B $@!  @ $EX@! @$04$F\$B $@!  @ $Ed@! @$04$Fp$B $@!  @W (!$ @! 0C@C@! B@ @! @$04$Fx$B $@!  @$ (!$ @! 0CDC@! B@z@! @$04$F$B $@!  @$ $/@! $$@$t$$B@ !(!$ @! 0C@C@! B@ @! @$P$$B@ !(!$ @! 0CDC@! B@ @! @$,!)04$F$B $@!  @$ $/@! $$@$$C<C!!,('0<'!'h! P'Ph$lptx|'\p$ t'hx$|'8$C'p` !@(!0!@! (($b/@! C$ b"@! C$b@! B !$$F`$G@! $((B @0B @ !$$F`$G@! $d$b`@d` !$$F`$G܏@! $,B @!,,@,C$b !$$F`$G@! $,$B 00B@0B !$$F`$GH@! $a('P'X'P'T'U`0!@8!$B t@! 44@4HT@(!U@ !PX@$B$B !$$F`$G@! X@T@!U` !@(!@! T@ !U@!P`(!@0!@! !!'<'!'<8!@$(,0B$$(B,$0 !$$F@$G܏@! Q@L*0B0B0B@#C' ` !@(!$@! @O !$$F@$G@! ?20B0B0B@$B@! $B@! $BX@! '$@ !$$@! A@! C$b !$$F@$G @! !!<8'@<'!'د$ !$B@! $B@! @$BX@! !$ '( X 0@( $( t0 @(failed to get netlink fd flags (%d)failed to set netlink fd flags (%d)failed to get netlink fd status flags (%d)failed to set netlink fd status flags (%d)failed to create netlink socket of type %d, attempting SOCK_RAWfailed to create netlink socket (%d)failed to bind netlink socket (%d)failed to set netlink socket SO_PASSCRED option (%d)failed to create netlink control pipefailed to create netlink event thread (%d)linux_netlink_socket != -1libusb/libusb/os/linux_netlink.cnetlink control pipe signal failedACTIONremoveaddunknown device action %sSUBSYSTEMusbDEVTYPEusb_deviceBUSNUMDEVNUMDEVICEDEVPATHerror receiving message from netlink (%d)invalid netlink message lengthignoring netlink message from unknown group/PID (%u/%u)ignoring netlink message with no sender credentialsignoring netlink message with non-zero sender UID %uyesnonetlink hotplug found device busnum: %hhu, devaddr: %hhu, sys_name: %s, removed: %snetlink event thread enteringnetlink control pipe read failednetlink event thread exitinglinux_netlink_event_thread_mainlinux_netlink_read_messagelinux_netlink_parselinux_netlink_stop_event_monitorlinux_netlink_stop_event_monitorlinux_netlink_start_event_monitorset_fd_cloexec_nbGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rodata.comment.gnu.attributes@ + %+0p=@9 8P B(P0X0"@;ao"{"q%T (X(XXAVk "  ! !  $P t0| B ]` o@     l $* KTZgnv}linux_netlink.cusbi_mutex_static_lockusbi_mutex_static_unlocklinux_netlink_socketnetlink_control_pipelibusb_linux_event_threadset_fd_cloexec_nb__FUNCTION__.5227__FUNCTION__.5235linux_netlink_event_thread_main__PRETTY_FUNCTION__.5244__FUNCTION__.5245netlink_message_parselinux_netlink_parse__FUNCTION__.5266linux_netlink_read_message__FUNCTION__.5283__FUNCTION__.5291_gp_disppthread_mutex_lockpthread_mutex_unlockfcntl__errno_locationusbi_loglinux_netlink_start_event_monitorsocketbindsetsockoptusbi_pipepthread_createcloselinux_netlink_stop_event_monitor__assertwritepthread_joinstrlenstrncmpstrcmpstrtoulstrrchrrecvmsglinux_device_disconnectedlinux_hotplug_enumeratereadlinux_hotplug_lockpolllinux_netlink_hotplug_poll( 4%X\ % % , %L TX `d! p!% %  %   ! !%L X%x  %  ! !% % , %L TX `d! p!%#  #% $( 0@ L %|  ! !%# #%    %, 48 @D! 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((!40'8<'!'ȯ40! 8!@!<D*D$b @B(,(D,<0C(b%(8BB 0C$b8BB 0C$b8BB 0C$by8BB 0C$bo8BB 0C$be8BB 0C$b[8BB 0C$bQ8BB 0C$$bG8BB 0C$%b=8BB 0C$(b38BB 0C$)b)8BB 0C$0b8BB 0C$1b8BB 0C$5b 8BB 0C$6b 8B@!*b%*,,B@$,(*,$@8$!`(!@0!@$B@! !40'8<'!'ȯ40! 8!@!<D<,(D*8BB 0C$b8BB 0C$b8BB 0C$by8BB 0C$bo8BB 0C$be8BB 0C$b[8BB 0C$bQ8BB 0C$$bG8BB 0C$%b=8BB 0C$(b38BB 0C$)b)8BB 0C$0b8BB 0C$1b8BB 0C$5b 8BB 0C$6b 8B@!(b%(*,B@$*,(*$8$ `(!@0!@$B@! !40'8@@88@@@@@@8@888888888888GCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.comment.gnu.attributes@> I< %>+>0p>=>9 N, BAP0A;YoB3BCiD  G   )A M_ozt(|pt `4&/h@?T[#k(8v-41@77;8`usb_control.cFT_VendorRequest_gp_displibusb_control_transferSetBaudRateBaud_getDivisorHiBaud_getDivisorSetDivisorSetLineControlSetFlowControlSetDtrClrDtrSetRtsClrRtsSetCharsGetModemStatusPurgepthread_mutex_lockpthread_mutex_unlockCancelReadRequestSetBreakRead_EEWrite_EEErase_EESetLatencyTimerUpdateDeadmanTimeoutusleepGetLatencyTimerSetBitModeGetBitModeSetStateResetDeviceVendorCmdSetVendorCmdGet   % $   %  %   %   %   %( ,   %   $%    %   %   %  4 <D% %p t  %t x   %| %x % % %` d  %4 8  %   %  , 4<%h l " ""%"" #"%#P# #\#%#t# ##%# # ' ''%(8 (< , ,,%-4 -8 1h 1p1x%1 1 2 2 %2 2%3 3%3 3%4 4%4 4%4 4%5D 5P%5l 5x%6  6%7 7 7T 7\7d%7 7 ; ; ;%;8 ;< >d >l>t% @` @` ! $@%`&'()*release/build/libftd2xx/device-list.o0000644000000000000000000000452014261476347016610 0ustar rootrootELF4( <'!'课!B,B0B$c@ B@!'<'!'课! Bb$  B@ !'<'!'د$ !$$@! @!B@CC!$ '(<'!'د$ !(B*(bb CCCC@!  B@!$ '(<@@((GCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.comment.gnu.attributes@0 p %p+p0pp=9 0 BP0;YoCSi   a  '0>LHO \device-list.cpgDeviceListFindDevice_gp_dispIsDeviceValidAddDevicecallocRemoveDevicefree    (   L P t %    0 8  %  @`release/build/libftd2xx/idtable.o0000644000000000000000000000725414261476347016013 0ustar rootrootELF4( <'!'د$ !($ @! @!&(@ !@! @ @! ! (C@C!$ '(<'!'௿! @* B@$D$E $-$Gd@! B@ !@!  @! !' <'!'د$ !(,(@$D $E $9$GT@! (Cb!C,b$$B(CC*@!!$ '(<'!'د$ !(,(@$D $E $K$GH@! (,@! @!D(C(Bb*@%(B@(C` !@(!@! @$(C(C(C(Bb!,C(B$C(C!!$ '(<'!'د$ !((@$D $E $k$G4@! (B$BA(Cb!B!$ '(( (((idt->idslibftd2xx/idtable.cidt != ((void *)0)IdTable_finalEntryIdTable_addIdTable_findIdTable_destroyGCC: (Linaro GCC 4.6-2012.02) 4.6.3 20120201 (prerelease)Agnu.symtab.strtab.shstrtab.rel.text.data.bss.reginfo.rel.pdr.mdebug.abi32.rodata.comment.gnu.attributes@  %+0p=9 ( BPX0@;ao{q T   d $T  =H  V4    o~idtable.c__PRETTY_FUNCTION__.2741__PRETTY_FUNCTION__.2747__PRETTY_FUNCTION__.2755__PRETTY_FUNCTION__.2762IdTable_create_gp_dispmallocfreeIdTable_destroy__assertIdTable_findIdTable_addreallocIdTable_finalEntry0 <%x % %` h l t |   % % % @ H L T \ d h t%H P T \ d l p |% % $%   ( 0 8 < H% @`release/build/libftd2xx.txt0000644000000000000000000006625014261476353014766 0ustar rootrootOutput of 'file' command: ========================= ./build/mips-openwrt-uclibc/libftd2xx.so.1.4.27: ELF 32-bit MSB shared object, MIPS, MIPS32 rel2 version 1 (SYSV), dynamically linked, not stripped Output of 'readelf -A' command: =============================== Attribute Section: gnu File Attributes Tag_GNU_MIPS_ABI_FP: Soft float Primary GOT: Canonical gp value: 00080380 Reserved entries: Address Access Initial Purpose 00078390 -32752(gp) 00000000 Lazy resolver 00078394 -32748(gp) 80000000 Module pointer (GNU extension) Local entries: Address Access Initial 00078398 -32744(gp) 00080000 0007839c -32740(gp) 00078a08 000783a0 -32736(gp) 00078158 000783a4 -32732(gp) 00000000 000783a8 -32728(gp) 00060000 000783ac -32724(gp) 00010000 000783b0 -32720(gp) 00020000 000783b4 -32716(gp) 00030000 000783b8 -32712(gp) 00040000 000783bc -32708(gp) 00050000 000783c0 -32704(gp) 00070000 000783c4 -32700(gp) 00000000 000783c8 -32696(gp) 00000000 Global entries: Address Access Initial Sym.Val. Type Ndx Name 000783cc -32692(gp) 0004a800 0004a800 FUNC 10 usbi_log 000783d0 -32688(gp) 0000f07c 0000f07c FUNC 10 FT_SetBreakOn 000783d4 -32684(gp) 00052fc4 00052fc4 FUNC 10 libusb_handle_events_timeou 000783d8 -32680(gp) 00043b9c 00043b9c FUNC 10 GetChipIDPD 000783dc -32676(gp) 00064090 00064090 FUNC UND free 000783e0 -32672(gp) 00064080 00064080 FUNC UND pthread_setspecific 000783e4 -32668(gp) 0005aef4 0005aef4 FUNC 10 linux_device_disconnected 000783e8 -32664(gp) 00064070 00064070 FUNC UND close 000783ec -32660(gp) 000194c0 000194c0 FUNC 10 UpdateDeadmanTimeout 000783f0 -32656(gp) 00015050 00015050 FUNC 10 EventSet 000783f4 -32652(gp) 00047078 00047078 FUNC 10 libusb_open 000783f8 -32648(gp) 0000c470 0000c470 FUNC 10 FT_Open 000783fc -32644(gp) 00064060 00064060 FUNC UND pthread_cond_timedwait 00078400 -32640(gp) 00043b64 00043b64 FUNC 10 GetChipTypePD 00078404 -32636(gp) 000252e0 000252e0 FUNC 10 GetChecksum 00078408 -32632(gp) 00064050 00064050 FUNC UND pthread_join 0007840c -32628(gp) 00064040 00064040 FUNC UND fcntl 00078410 -32624(gp) 00064030 00064030 FUNC UND recvmsg 00078414 -32620(gp) 0002f1f0 0002f1f0 FUNC 10 TFtEE2232Constr 00078418 -32616(gp) 00046424 00046424 FUNC 10 libusb_get_bus_number 0007841c -32612(gp) 000533e4 000533e4 FUNC 10 libusb_handle_events_comple 00078420 -32608(gp) 00000000 00000000 NOTYPE UND _Jv_RegisterClasses 00078424 -32604(gp) 00017060 00017060 FUNC 10 SetBreak 00078428 -32600(gp) 00031824 00031824 FUNC 10 GetUserAreaSize2232 0007842c -32596(gp) 00035974 00035974 FUNC 10 TFtEE4232HConstrH 00078430 -32592(gp) 0000d1ec 0000d1ec FUNC 10 FT_Read 00078434 -32588(gp) 00064020 00064020 FUNC UND closedir 00078438 -32584(gp) 0002792c 0002792c FUNC 10 ReadAndParse232 0007843c -32580(gp) 00064010 00064010 FUNC UND fputs 00078440 -32576(gp) 0004f578 0004f578 FUNC 10 usbi_io_init 00078444 -32572(gp) 00064000 00064000 FUNC UND strchr 00078448 -32568(gp) 00024a10 00024a10 FUNC 10 TEeDataConstrI 0007844c -32564(gp) 00046484 00046484 FUNC 10 libusb_get_port_numbers 00078450 -32560(gp) 00049228 00049228 FUNC 10 libusb_init 00078454 -32556(gp) 0004eb3c 0004eb3c FUNC 10 libusb_get_string_descripto 00078458 -32552(gp) 0000f368 0000f368 FUNC 10 FT_GetLatencyTimer 0007845c -32548(gp) 0000c9ec 0000c9ec FUNC 10 FT_Close 00078460 -32544(gp) 00063ff0 00063ff0 FUNC UND __assert 00078464 -32540(gp) 000178a8 000178a8 FUNC 10 GetLatencyTimer 00078468 -32536(gp) 00014b7c 00014b7c FUNC 10 Baud_getDivisorHi 0007846c -32532(gp) 00044244 00044244 FUNC 10 TSerialNumberConstrCW 00078470 -32528(gp) 00063fe0 00063fe0 FUNC UND toupper 00078474 -32524(gp) 0001c1b4 0001c1b4 FUNC 10 IdTable_destroy 00078478 -32520(gp) 00063fd0 00063fd0 FUNC UND open 0007847c -32516(gp) 0001ca38 0001ca38 FUNC 10 FT_EE_Program 00078480 -32512(gp) 00063fc0 00063fc0 FUNC UND strlen 00078484 -32508(gp) 0002e85c 0002e85c FUNC 10 AddUserArea232H 00078488 -32504(gp) 00063fb0 00063fb0 FUNC UND pthread_mutex_init 0007848c -32500(gp) 00056884 00056884 FUNC 10 libusb_bulk_transfer 00078490 -32496(gp) 00031eb4 00031eb4 FUNC 10 TFtEE2232HConstrH 00078494 -32492(gp) 00016898 00016898 FUNC 10 SetRts 00078498 -32488(gp) 0004f974 0004f974 FUNC 10 usbi_io_exit 0007849c -32484(gp) 0004a884 0004a884 FUNC 10 libusb_error_name 000784a0 -32480(gp) 00043e80 00043e80 FUNC 10 strupr 000784a4 -32476(gp) 00063fa0 00063fa0 FUNC UND pthread_cond_destroy 000784a8 -32472(gp) 0001bd70 0001bd70 FUNC 10 FindDevice 000784ac -32468(gp) 0003396c 0003396c FUNC 10 ReadAndParse2232H 000784b0 -32464(gp) 00024840 00024840 FUNC 10 Invalidate 000784b4 -32460(gp) 00063f90 00063f90 FUNC UND atoi 000784b8 -32456(gp) 000166a4 000166a4 FUNC 10 SetDtr 000784bc -32452(gp) 00014f88 00014f88 FUNC 10 EventDestroy 000784c0 -32448(gp) 0004a218 0004a218 FUNC 10 usbi_log_v 000784c4 -32444(gp) 0002b000 0002b000 FUNC 10 MoveStrings232R 000784c8 -32440(gp) 00063f80 00063f80 FUNC UND pthread_mutex_trylock 000784cc -32436(gp) 00024b6c 00024b6c FUNC 10 InitialiseEEDATAStructure 000784d0 -32432(gp) 000513fc 000513fc FUNC 10 libusb_lock_events 000784d4 -32428(gp) 00026538 00026538 FUNC 10 InitiailiseE2DATAStructure 000784d8 -32424(gp) 0002424c 0002424c FUNC 10 ReadWord 000784dc -32420(gp) 00016988 00016988 FUNC 10 ClrRts 000784e0 -32416(gp) 00054a3c 00054a3c FUNC 10 usbi_hotplug_match 000784e4 -32412(gp) 00063f70 00063f70 FUNC UND __errno_location 000784e8 -32408(gp) 000519c0 000519c0 FUNC 10 libusb_lock_event_waiters 000784ec -32404(gp) 00045cac 00045cac FUNC 10 usbi_sanitize_device 000784f0 -32400(gp) 00063f60 00063f60 FUNC UND pthread_cond_wait 000784f4 -32396(gp) 00024d34 00024d34 FUNC 10 TFtE2DataConstrH 000784f8 -32392(gp) 000242d4 000242d4 FUNC 10 Confirm 000784fc -32388(gp) 00024f00 00024f00 FUNC 10 GetManufacturerString 00078500 -32384(gp) 00063f50 00063f50 FUNC UND pthread_mutex_lock 00078504 -32380(gp) 000486a8 000486a8 FUNC 10 libusb_clear_halt 00078508 -32376(gp) 00051ad8 00051ad8 FUNC 10 libusb_wait_for_event 0007850c -32372(gp) 00063f40 00063f40 FUNC UND pthread_mutex_destroy 00078510 -32368(gp) 000171e8 000171e8 FUNC 10 Write_EE 00078514 -32364(gp) 0000e5f8 0000e5f8 FUNC 10 FT_ClrRts 00078518 -32360(gp) 0001c0a0 0001c0a0 FUNC 10 IdTable_create 0007851c -32356(gp) 00026214 00026214 FUNC 10 GetRev4 00078520 -32352(gp) 000449e0 000449e0 FUNC 10 usbi_cond_timedwait 00078524 -32348(gp) 00050f74 00050f74 FUNC 10 usbi_handle_transfer_cancel 00078528 -32344(gp) 000263ac 000263ac FUNC 10 GetSerialNumberEnable 0007852c -32340(gp) 000264b4 000264b4 FUNC 10 GetUSBVersion 00078530 -32336(gp) 00078a34 00078a34 OBJECT 23 dwNumberOfAttachedDevices 00078534 -32332(gp) 00063f30 00063f30 FUNC UND fwrite 00078538 -32328(gp) 0004560c 0004560c FUNC 10 discovered_devs_append 0007853c -32324(gp) 00019038 00019038 FUNC 10 VendorCmdGet 00078540 -32320(gp) 00049b10 00049b10 FUNC 10 libusb_exit 00078544 -32316(gp) 00044400 00044400 FUNC 10 Build 00078548 -32312(gp) 00016d74 00016d74 FUNC 10 Purge 0007854c -32308(gp) 000250ec 000250ec FUNC 10 GetSerialString 00078550 -32304(gp) 00043bd4 00043bd4 FUNC 10 SetPDChecksum 00078554 -32300(gp) 00063f20 00063f20 FUNC UND stat 00078558 -32296(gp) 00025798 00025798 FUNC 10 GetOptions 0007855c -32292(gp) 00063f10 00063f10 FUNC UND __moddi3 00078560 -32288(gp) 00024ec0 00024ec0 FUNC 10 GetProductId 00078564 -32284(gp) 00025a80 00025a80 FUNC 10 GetMaxPower 00078568 -32280(gp) 000135a8 000135a8 FUNC 10 GetOpenDeviceName 0007856c -32276(gp) 000268e8 000268e8 FUNC 10 Init232 00078570 -32272(gp) 0004d6e0 0004d6e0 FUNC 10 libusb_free_config_descript 00078574 -32268(gp) 0001379c 0001379c FUNC 10 GetDeviceDescription 00078578 -32264(gp) 00078a0c 00078a0c OBJECT 22 active_contexts_list 0007857c -32260(gp) 000256c4 000256c4 FUNC 10 AddOptions 00078580 -32256(gp) 00024fa8 00024fa8 FUNC 10 GetManufacturerIDString 00078584 -32252(gp) 00016308 00016308 FUNC 10 SetDivisor 00078588 -32248(gp) 00025bfc 00025bfc FUNC 10 StrCopyToDescStr 0007858c -32244(gp) 0002cf80 0002cf80 FUNC 10 ReadAndParse232H 00078590 -32240(gp) 00015210 00015210 FUNC 10 EventWait 00078594 -32236(gp) 00050bec 00050bec FUNC 10 usbi_handle_transfer_comple 00078598 -32232(gp) 00025194 00025194 FUNC 10 SetChecksum 0007859c -32228(gp) 00000000 00000000 OBJECT UND stderr 000785a0 -32224(gp) 00046ed8 00046ed8 FUNC 10 usbi_signal_event 000785a4 -32220(gp) 00027020 00027020 FUNC 10 Program 000785a8 -32216(gp) 00043f3c 00043f3c FUNC 10 i64toa 000785ac -32212(gp) 00026878 00026878 FUNC 10 TFtEE232ConstrH 000785b0 -32208(gp) 00013230 00013230 FUNC 10 GetDeviceType 000785b4 -32204(gp) 00078a30 00078a30 OBJECT 23 pgAttachedList 000785b8 -32200(gp) 00018c04 00018c04 FUNC 10 ResetDevice 000785bc -32196(gp) 00024868 00024868 FUNC 10 WriteToFile 000785c0 -32192(gp) 00063f00 00063f00 FUNC UND asprintf 000785c4 -32188(gp) 00063ef0 00063ef0 FUNC UND sprintf 000785c8 -32184(gp) 00016528 00016528 FUNC 10 SetFlowControl 000785cc -32180(gp) 0000f2c4 0000f2c4 FUNC 10 FT_SetLatencyTimer 000785d0 -32176(gp) 00053574 00053574 FUNC 10 libusb_get_next_timeout 000785d4 -32172(gp) 0000c400 0000c400 FUNC 10 FT_OpenEx 000785d8 -32168(gp) 000060d0 000060d0 FUNC 10 SetConfigData 000785dc -32164(gp) 00063ee0 00063ee0 FUNC UND getcwd 000785e0 -32160(gp) 00034ca8 00034ca8 FUNC 10 SetRomType2232H 000785e4 -32156(gp) 00063ed0 00063ed0 FUNC UND pthread_mutex_unlock 000785e8 -32152(gp) 000393e4 000393e4 FUNC 10 Initialise4232HStructure 000785ec -32148(gp) 000443cc 000443cc FUNC 10 GetSerialNo 000785f0 -32144(gp) 00063ec0 00063ec0 FUNC UND strcmp 000785f4 -32140(gp) 00044958 00044958 FUNC 10 InitialiseSerialNumberStruc 000785f8 -32136(gp) 00045f38 00045f38 FUNC 10 libusb_get_device_list 000785fc -32132(gp) 00016794 00016794 FUNC 10 ClrDtr 00078600 -32128(gp) 00058e40 00058e40 FUNC 10 linux_get_device_address 00078604 -32124(gp) 0001b5b0 0001b5b0 FUNC 10 processor_thread 00078608 -32120(gp) 0002afc4 0002afc4 FUNC 10 SetRomType232R 0007860c -32116(gp) 00063eb0 00063eb0 FUNC UND poll 00078610 -32112(gp) 00063ea0 00063ea0 FUNC UND opendir 00078614 -32108(gp) 00063e90 00063e90 FUNC UND time 00078618 -32104(gp) 00017368 00017368 FUNC 10 SetLatencyTimer 0007861c -32100(gp) 0004a0cc 0004a0cc FUNC 10 libusb_has_capability 00078620 -32096(gp) 0002625c 0002625c FUNC 10 GetIsoIn 00078624 -32092(gp) 0000da90 0000da90 FUNC 10 FT_WriteMultiThread 00078628 -32088(gp) 00063e80 00063e80 FUNC UND fclose 0007862c -32084(gp) 00016a8c 00016a8c FUNC 10 SetChars 00078630 -32080(gp) 0000f114 0000f114 FUNC 10 FT_SetBreakOff 00078634 -32076(gp) 0000dbb0 0000dbb0 FUNC 10 FT_WriteSingleThread 00078638 -32072(gp) 0003178c 0003178c FUNC 10 GetUserAreaOffset2232 0007863c -32068(gp) 00005e60 00005e60 FUNC 10 GetSectionType 00078640 -32064(gp) 0004ad44 0004ad44 FUNC 10 usbi_parse_descriptor 00078644 -32060(gp) 00048784 00048784 FUNC 10 libusb_reset_device 00078648 -32056(gp) 00054c5c 00054c5c FUNC 10 usbi_hotplug_notification 0007864c -32052(gp) 00045824 00045824 FUNC 10 usbi_alloc_device 00078650 -32048(gp) 00053e2c 00053e2c FUNC 10 usbi_remove_pollfd 00078654 -32044(gp) 00063e70 00063e70 FUNC UND memset 00078658 -32040(gp) 00063e60 00063e60 FUNC UND localtime 0007865c -32036(gp) 0002531c 0002531c FUNC 10 GetSerialStringOffset 00078660 -32032(gp) 00063e50 00063e50 FUNC UND fopen 00078664 -32028(gp) 0002592c 0002592c FUNC 10 AddBmAttributes 00078668 -32024(gp) 0000d83c 0000d83c FUNC 10 write_thread 0007866c -32020(gp) 0000dc94 0000dc94 FUNC 10 FT_Write 00078670 -32016(gp) 00063e40 00063e40 FUNC UND gettimeofday 00078674 -32012(gp) 00007160 00007160 FUNC 10 constructD2xx 00078678 -32008(gp) 000556ec 000556ec FUNC 10 usbi_hotplug_deregister 0007867c -32004(gp) 0000c4dc 0000c4dc FUNC 10 FT_ListDevices 00078680 -32000(gp) 000403bc 000403bc FUNC 10 ReadAndParsePD 00078684 -31996(gp) 00063e30 00063e30 FUNC UND strdup 00078688 -31992(gp) 0004ced0 0004ced0 FUNC 10 libusb_get_active_config_de 0007868c -31988(gp) 000516d4 000516d4 FUNC 10 libusb_event_handler_active 00078690 -31984(gp) 00063e20 00063e20 FUNC UND fread 00078694 -31980(gp) 00011e68 00011e68 FUNC 10 ResetAttachedList 00078698 -31976(gp) 00026810 00026810 FUNC 10 TFtEE232Constr 0007869c -31972(gp) 0002b344 0002b344 FUNC 10 TFtEE232HConstrH 000786a0 -31968(gp) 000318e4 000318e4 FUNC 10 GetUserArea2232 000786a4 -31964(gp) 00063e10 00063e10 FUNC UND sscanf 000786a8 -31960(gp) 0000e68c 0000e68c FUNC 10 FT_GetModemStatus 000786ac -31956(gp) 00046ca0 00046ca0 FUNC 10 libusb_unref_device 000786b0 -31952(gp) 000259e4 000259e4 FUNC 10 AddMaxPower 000786b4 -31948(gp) 00063e00 00063e00 FUNC UND fdopen 000786b8 -31944(gp) 0002b3c0 0002b3c0 FUNC 10 Init232H 000786bc -31940(gp) 00046328 00046328 FUNC 10 libusb_free_device_list 000786c0 -31936(gp) 00013710 00013710 FUNC 10 CloseDevice 000786c4 -31932(gp) 00026430 00026430 FUNC 10 GetUSBVersionEnable 000786c8 -31928(gp) 00024db0 00024db0 FUNC 10 fte2Read 000786cc -31924(gp) 00063df0 00063df0 FUNC UND pthread_cond_init 000786d0 -31920(gp) 0001fbb4 0001fbb4 FUNC 10 FT_EE_Read 000786d4 -31916(gp) 0001c2a8 0001c2a8 FUNC 10 IdTable_find 000786d8 -31912(gp) 0001020c 0001020c FUNC 10 FT_GetDeviceLocId 000786dc -31908(gp) 00063de0 00063de0 FUNC UND realloc 000786e0 -31904(gp) 0003bfd8 0003bfd8 FUNC 10 InitialiseFTXStructure 000786e4 -31900(gp) 000283e4 000283e4 FUNC 10 Initialise232Structure 000786e8 -31896(gp) 0002b0bc 0002b0bc FUNC 10 GetChipID232R 000786ec -31892(gp) 00025ea4 00025ea4 FUNC 10 GetUserAreaSize 000786f0 -31888(gp) 000352e0 000352e0 FUNC 10 GetUserAreaSize2232H 000786f4 -31884(gp) 00006024 00006024 FUNC 10 GetConfigFlags 000786f8 -31880(gp) 00044b2c 00044b2c FUNC 10 usbi_get_tid 000786fc -31876(gp) 00017d38 00017d38 FUNC 10 SetBitMode 00078700 -31872(gp) 00063dd0 00063dd0 FUNC UND strncmp 00078704 -31868(gp) 00019af8 00019af8 FUNC 10 ProcessReadRequest 00078708 -31864(gp) 00063dc0 00063dc0 FUNC UND read 0007870c -31860(gp) 00006470 00006470 FUNC 10 GetDeviceConfigSettings 00078710 -31856(gp) 0001ada8 0001ada8 FUNC 10 reader_thread 00078714 -31852(gp) 000259a0 000259a0 FUNC 10 GetBmAttributes 00078718 -31848(gp) 00054324 00054324 FUNC 10 usbi_handle_disconnect 0007871c -31844(gp) 00035670 00035670 FUNC 10 Read2232H 00078720 -31840(gp) 000197a4 000197a4 FUNC 10 InRequest 00078724 -31836(gp) 0004d114 0004d114 FUNC 10 libusb_get_config_descripto 00078728 -31832(gp) 000255f8 000255f8 FUNC 10 AddPortNamePrefixDescriptor 0007872c -31828(gp) 00063db0 00063db0 FUNC UND pthread_key_create 00078730 -31824(gp) 00034e6c 00034e6c FUNC 10 MoveStrings2232H 00078734 -31820(gp) 00019450 00019450 FUNC 10 ProcessReadConditionFlag 00078738 -31816(gp) 00050570 00050570 FUNC 10 libusb_submit_transfer 0007873c -31812(gp) 00024070 00024070 FUNC 10 Reset 00078740 -31808(gp) 00019a70 00019a70 FUNC 10 CancelReadRequest 00078744 -31804(gp) 0000f840 0000f840 FUNC 10 FT_GetDeviceInfo 00078748 -31800(gp) 00044b90 00044b90 FUNC 10 usbi_pipe 0007874c -31796(gp) 00063da0 00063da0 FUNC UND setsockopt 00078750 -31792(gp) 0001be1c 0001be1c FUNC 10 IsDeviceValid 00078754 -31788(gp) 0001c70c 0001c70c FUNC 10 FT_ReadEE 00078758 -31784(gp) 0002b2d0 0002b2d0 FUNC 10 TFtEE232HConstr 0007875c -31780(gp) 00063d90 00063d90 FUNC UND pthread_cond_broadcast 00078760 -31776(gp) 00045dfc 00045dfc FUNC 10 usbi_get_device_by_session_ 00078764 -31772(gp) 0002b024 0002b024 FUNC 10 GetChipType232R 00078768 -31768(gp) 0004e40c 0004e40c FUNC 10 libusb_free_bos_descriptor 0007876c -31764(gp) 0005aadc 0005aadc FUNC 10 linux_enumerate_device 00078770 -31760(gp) 00063d80 00063d80 FUNC UND bind 00078774 -31756(gp) 00063d70 00063d70 FUNC UND strcat 00078778 -31752(gp) 00025ad0 00025ad0 FUNC 10 IsValid 0007877c -31748(gp) 00063d60 00063d60 FUNC UND write 00078780 -31744(gp) 000284e0 000284e0 FUNC 10 TFtEE232RConstr 00078784 -31740(gp) 00043b40 00043b40 FUNC 10 MoveStringsPD 00078788 -31736(gp) 00051494 00051494 FUNC 10 libusb_unlock_events 0007878c -31732(gp) 00063d50 00063d50 FUNC UND calloc 00078790 -31728(gp) 0000e850 0000e850 FUNC 10 FT_Purge 00078794 -31724(gp) 00046bf0 00046bf0 FUNC 10 libusb_ref_device 00078798 -31720(gp) 00063d40 00063d40 FUNC UND nanosleep 0007879c -31716(gp) 00063d30 00063d30 FUNC UND strrchr 000787a0 -31712(gp) 00025f40 00025f40 FUNC 10 AddUserArea 000787a4 -31708(gp) 00025d28 00025d28 FUNC 10 CheckSerialised 000787a8 -31704(gp) 000163b4 000163b4 FUNC 10 SetLineControl 000787ac -31700(gp) 00031bb4 00031bb4 FUNC 10 Read2232 000787b0 -31696(gp) 00044320 00044320 FUNC 10 GetSerialNoAndLength 000787b4 -31692(gp) 00025044 00025044 FUNC 10 GetProductString 000787b8 -31688(gp) 000260bc 000260bc FUNC 10 GetUserArea 000787bc -31684(gp) 0001482c 0001482c FUNC 10 Baud_getDivisor 000787c0 -31680(gp) 00029f3c 00029f3c FUNC 10 ReadAndParse232R 000787c4 -31676(gp) 0002f2e0 0002f2e0 FUNC 10 Init2232 000787c8 -31672(gp) 00037438 00037438 FUNC 10 ReadAndParse4232H 000787cc -31668(gp) 00063d20 00063d20 FUNC UND uname 000787d0 -31664(gp) 0005ade0 0005ade0 FUNC 10 linux_hotplug_enumerate 000787d4 -31660(gp) 00016c70 00016c70 FUNC 10 GetModemStatus 000787d8 -31656(gp) 00028548 00028548 FUNC 10 TFtEE232RConstrH 000787dc -31652(gp) 000508d8 000508d8 FUNC 10 libusb_cancel_transfer 000787e0 -31648(gp) 0001c3b0 0001c3b0 FUNC 10 IdTable_add 000787e4 -31644(gp) 00063d10 00063d10 FUNC UND pipe 000787e8 -31640(gp) 00024970 00024970 FUNC 10 TEeDataConstr 000787ec -31636(gp) 00063d00 00063d00 FUNC UND strtol 000787f0 -31632(gp) 000313b0 000313b0 FUNC 10 MoveStrings2232 000787f4 -31628(gp) 000186c4 000186c4 FUNC 10 SetState 000787f8 -31624(gp) 000466d8 000466d8 FUNC 10 libusb_get_device_address 000787fc -31620(gp) 00053310 00053310 FUNC 10 libusb_handle_events_timeou 00078800 -31616(gp) 00063a50 00063a50 FUNC 10 linux_netlink_hotplug_poll 00078804 -31612(gp) 00031e40 00031e40 FUNC 10 TFtEE2232HConstr 00078808 -31608(gp) 00063cf0 00063cf0 FUNC UND strncasecmp 0007880c -31604(gp) 00063ce0 00063ce0 FUNC UND mmap 00078810 -31600(gp) 00031cf4 00031cf4 FUNC 10 Initialise2232Structure 00078814 -31596(gp) 00035900 00035900 FUNC 10 TFtEE4232HConstr 00078818 -31592(gp) 00005d50 00005d50 FUNC 10 GetString 0007881c -31588(gp) 00078af0 00078af0 OBJECT 23 linux_hotplug_lock 00078820 -31584(gp) 00051280 00051280 FUNC 10 libusb_try_lock_events 00078824 -31580(gp) 00038c00 00038c00 FUNC 10 AddUserArea4232H 00078828 -31576(gp) 00062890 00062890 FUNC 10 linux_netlink_stop_event_mo 0007882c -31572(gp) 00025844 00025844 FUNC 10 AddOemVendorId 00078830 -31568(gp) 0001bebc 0001bebc FUNC 10 AddDevice 00078834 -31564(gp) 00031510 00031510 FUNC 10 AddUserArea2232 00078838 -31560(gp) 00078a90 00078a90 OBJECT 23 usbi_default_context 0007883c -31556(gp) 00063cd0 00063cd0 FUNC UND readdir 00078840 -31552(gp) 00078a94 00078a94 OBJECT 23 active_contexts_lock 00078844 -31548(gp) 000283c0 000283c0 FUNC 10 MoveStrings232 00078848 -31544(gp) 00063cc0 00063cc0 FUNC UND socket 0007884c -31540(gp) 000262dc 000262dc FUNC 10 GetIsoOut 00078850 -31536(gp) 00025358 00025358 FUNC 10 EraseSerialStringDescriptor 00078854 -31532(gp) 00024ab8 00024ab8 FUNC 10 TEeDataConstrH 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FUNC 10 DescStrCopyToStr 000789e4 -31132(gp) 00063b70 00063b70 FUNC UND strcpy 000789e8 -31128(gp) 00043d5c 00043d5c FUNC 10 InitialisePDStructure 000789ec -31124(gp) 0002f0a0 0002f0a0 FUNC 10 Initialise232HStructure 000789f0 -31120(gp) 0002eef8 0002eef8 FUNC 10 Read232H 000789f4 -31116(gp) 00063b60 00063b60 FUNC UND clock_gettime 000789f8 -31112(gp) 00048330 00048330 FUNC 10 libusb_release_interface 000789fc -31108(gp) 00024818 00024818 FUNC 10 Check 00078a00 -31104(gp) 000459a4 000459a4 FUNC 10 usbi_connect_device 00078a04 -31100(gp) 00007d88 00007d88 FUNC 10 destroyD2xx release/libusb/0000775000000000000000000000000014261476161012466 5ustar rootrootrelease/libusb/config.h0000664000000000000000000001332014261476161014103 0ustar rootroot/* config.h. Generated from config.h.in by configure. */ /* config.h.in. Generated from configure.ac by autoheader. */ /* Default visibility */ #define DEFAULT_VISIBILITY __attribute__((visibility("default"))) /* Start with debug message logging enabled */ /* #undef ENABLE_DEBUG_LOGGING */ /* Message logging */ #define ENABLE_LOGGING 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_ASM_TYPES_H */ /* Define to 1 if you have the header file. */ #define HAVE_DLFCN_H 1 /* Define to 1 if you have the `gettimeofday' function. */ #define HAVE_GETTIMEOFDAY 1 /* Define to 1 if you have the header file. */ #define HAVE_INTTYPES_H 1 /* Define to 1 if you have the `udev' library (-ludev). */ /* #undef HAVE_LIBUDEV */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LIBUDEV_H */ /* Define to 1 if you have the header file. */ /* #undef HAVE_LINUX_FILTER_H */ /* Define to 1 if you have the header file. */ #define HAVE_LINUX_NETLINK_H 1 /* Define to 1 if you have the header file. */ #define HAVE_MEMORY_H 1 /* Define to 1 if you have the header file. */ #define HAVE_POLL_H 1 /* Define to 1 if you have the header file. */ #define HAVE_SIGNAL_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STDINT_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STDLIB_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STRINGS_H 1 /* Define to 1 if you have the header file. */ #define HAVE_STRING_H 1 /* Define to 1 if the system has the type `struct timespec'. */ #define HAVE_STRUCT_TIMESPEC 1 /* syslog() function available */ #define HAVE_SYSLOG_FUNC 1 /* Define to 1 if you have the header file. */ #define HAVE_SYSLOG_H 1 /* Define to 1 if you have the header file. */ /* #undef HAVE_SYS_SOCKET_H */ /* Define to 1 if you have the header file. */ #define HAVE_SYS_STAT_H 1 /* Define to 1 if you have the header file. */ #define HAVE_SYS_TIME_H 1 /* Define to 1 if you have the header file. */ #define HAVE_SYS_TYPES_H 1 /* Define to 1 if you have the header file. */ #define HAVE_UNISTD_H 1 /* Define to the sub-directory in which libtool stores uninstalled libraries. */ #define LT_OBJDIR ".libs/" /* Define to 1 if your C compiler doesn't accept -c and -o together. */ /* #undef NO_MINUS_C_MINUS_O */ #ifdef _OSX_ /* Darwin backend for Mac */ #define OS_DARWIN 1 #else /* Linux backend for Android and generic Linux */ #define OS_LINUX 1 #endif /* _OSX */ /* Haiku backend */ /* #undef OS_HAIKU */ /* NetBSD backend */ /* #undef OS_NETBSD */ /* OpenBSD backend */ /* #undef OS_OPENBSD */ /* Windows backend */ /* #undef OS_WINDOWS */ /* Name of package */ #define PACKAGE "libusb" /* Define to the address where bug reports for this package should be sent. */ #define PACKAGE_BUGREPORT "libusb-devel@lists.sourceforge.net" /* Define to the full name of this package. */ #define PACKAGE_NAME "libusb" /* Define to the full name and version of this package. */ #define PACKAGE_STRING "libusb 1.0.20" /* Define to the one symbol short name of this package. */ #define PACKAGE_TARNAME "libusb" /* Define to the home page for this package. */ #define PACKAGE_URL "http://libusb.info" /* Define to the version of this package. */ #define PACKAGE_VERSION "1.0.20" /* type of second poll() argument */ #define POLL_NFDS_TYPE nfds_t /* Define to 1 if you have the ANSI C header files. */ #define STDC_HEADERS 1 /* Use POSIX Threads */ #define THREADS_POSIX 1 /* timerfd headers available */ /* Not when configure was run on a 10.6.8 MacBook Pro. */ /* Not when configure was run with arm-linux-androideabi-4.4.3 */ /* Not when building on Ubuntu 8.04. */ /* Even if TimerFD is available, don't use it because it forces a * dependency on GLibC > 2.9. See Sharepoint bug 207 and Bugzilla bug 57. */ #undef USBI_TIMERFD_AVAILABLE /* Enable output to system log */ /* #undef USE_SYSTEM_LOGGING_FACILITY */ /* Use udev for device enumeration/hotplug */ /* #undef USE_UDEV */ /* Version number of package */ #define VERSION "1.0.22" #define LIBUSB_DEBUG 4 /* Oldest Windows version supported */ /* #undef WINVER */ /* Use GNU extensions */ #define _GNU_SOURCE 1 /* Define to `__inline__' or `__inline' if that's what the C compiler calls it, or to nothing if 'inline' is not supported under any name. */ #ifndef __cplusplus /* #undef inline */ #endif /* Building on Mac OS 10.6.8 reveals darwin_usb.c omits to include inttypes */ #ifndef PRIx64 #include #endif /* PRIx64 */ #ifdef FORTIFY /* Fortify (memory checking tool) enabled so all sources must include * fortify.h. Do it here to avoid modifying libusb sources. */ #include "fortify.h" #endif /* FORTIFY */ #ifdef __ANDROID__ /* Quick and dirty way to redirect libusb's debug functions to Android's * logger. You also need to prefix all fprintf and vfprintf in libusb/core.c * with 'z', a change which you should not check in! */ #include #define zfprintf(stream, format, args ...) \ __android_log_print(ANDROID_LOG_DEBUG, "libusbx", format, ##args) #define zvfprintf(stream, format, arglist) \ __android_log_vprint(ANDROID_LOG_DEBUG, "libusbx", format, arglist) /* Android's time.h has no definition of TIMESPEC_TO_TIMEVAL */ #ifndef TIMESPEC_TO_TIMEVAL #define TIMESPEC_TO_TIMEVAL(tv, ts) \ do \ { \ (tv)->tv_sec = (ts)->tv_sec; \ (tv)->tv_usec = (ts)->tv_nsec / 1000; \ } \ while (0) #endif /* TIMESPEC_TO_TIMEVAL */ #endif /* __ANDROID__ */ release/libusb/COPYING0000664000000000000000000006350414261476161013531 0ustar rootroot GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 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Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. , 1 April 1990 Ty Coon, President of Vice That's all there is to it! release/libusb/libusb/0000775000000000000000000000000014261476162013747 5ustar rootrootrelease/libusb/libusb/Makefile.am0000664000000000000000000000523214261476162016005 0ustar rootrootall: libusb-1.0.la libusb-1.0.dll AUTOMAKE_OPTIONS = subdir-objects lib_LTLIBRARIES = libusb-1.0.la POSIX_POLL_SRC = os/poll_posix.h os/poll_posix.c POSIX_THREADS_SRC = os/threads_posix.h os/threads_posix.c WINDOWS_POLL_SRC = os/poll_windows.h os/poll_windows.c WINDOWS_THREADS_SRC = os/threads_windows.h os/threads_windows.c LINUX_USBFS_SRC = os/linux_usbfs.h os/linux_usbfs.c DARWIN_USB_SRC = os/darwin_usb.h os/darwin_usb.c OPENBSD_USB_SRC = os/openbsd_usb.c NETBSD_USB_SRC = os/netbsd_usb.c SUNOS_USB_SRC = os/sunos_usb.c os/sunos_usb.h WINDOWS_USB_SRC = libusb-1.0.def libusb-1.0.rc \ os/windows_common.h \ os/windows_nt_common.h os/windows_nt_common.c \ os/windows_nt_shared_types.h \ os/windows_usbdk.h os/windows_usbdk.c \ os/windows_winusb.h os/windows_winusb.c WINCE_USB_SRC = os/wince_usb.h os/wince_usb.c HAIKU_USB_SRC = os/haiku_usb.h os/haiku_usb_backend.cpp \ os/haiku_usb_raw.h os/haiku_usb_raw.cpp os/haiku_pollfs.cpp EXTRA_DIST = $(POSIX_POLL_SRC) $(POSIX_THREADS_SRC) \ $(WINDOWS_POLL_SRC) $(WINDOWS_THREADS_SRC) \ $(LINUX_USBFS_SRC) $(DARWIN_USB_SRC) \ $(OPENBSD_USB_SRC) $(NETBSD_USB_SRC) \ $(WINDOWS_USB_SRC) $(WINCE_USB_SRC) \ $(HAIKU_USB_SRC) \ os/linux_udev.c os/linux_netlink.c if OS_LINUX if USE_UDEV OS_SRC = $(LINUX_USBFS_SRC) os/linux_udev.c else OS_SRC = $(LINUX_USBFS_SRC) os/linux_netlink.c endif endif if OS_DARWIN OS_SRC = $(DARWIN_USB_SRC) AM_CFLAGS_EXT = -no-cpp-precomp endif if OS_OPENBSD OS_SRC = $(OPENBSD_USB_SRC) endif if OS_NETBSD OS_SRC = $(NETBSD_USB_SRC) endif if OS_SUNOS OS_SRC = $(SUNOS_USB_SRC) endif if OS_HAIKU noinst_LTLIBRARIES = libusb_haiku.la libusb_haiku_la_SOURCES = $(HAIKU_USB_SRC) libusb_1_0_la_LIBADD = libusb_haiku.la endif if OS_WINDOWS OS_SRC = $(WINDOWS_USB_SRC) .rc.lo: $(AM_V_GEN)$(LIBTOOL) $(AM_V_lt) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --tag=RC --mode=compile $(RC) $(RCFLAGS) -i $< -o $@ libusb-1.0.rc: version.h version_nano.h endif libusb-1.0.dll: libusb-1.0.def libusb-1.0.la if CREATE_IMPORT_LIB # Rebuild the import lib from the .def so that MS and MinGW DLLs can be interchanged $(AM_V_GEN)$(DLLTOOL) $(DLLTOOLFLAGS) --kill-at --input-def $(srcdir)/libusb-1.0.def --dllname $@ --output-lib .libs/$@.a endif if OS_WINDOWS POLL_SRC = $(WINDOWS_POLL_SRC) else POLL_SRC = $(POSIX_POLL_SRC) endif if THREADS_POSIX THREADS_SRC = $(POSIX_THREADS_SRC) else THREADS_SRC = $(WINDOWS_THREADS_SRC) endif libusb_1_0_la_CFLAGS = $(AM_CFLAGS) libusb_1_0_la_LDFLAGS = $(LTLDFLAGS) libusb_1_0_la_SOURCES = libusbi.h libusb.h version.h version_nano.h \ core.c descriptor.c hotplug.h hotplug.c io.c strerror.c sync.c \ $(POLL_SRC) $(THREADS_SRC) $(OS_SRC) hdrdir = $(includedir)/libusb-1.0 hdr_HEADERS = libusb.h release/libusb/libusb/version_nano.h0000664000000000000000000000003214261476161016612 0ustar rootroot#define LIBUSB_NANO 11312 release/libusb/libusb/io.c0000664000000000000000000032272114261476162014531 0ustar rootroot/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */ /* * I/O functions for libusb * Copyright © 2007-2009 Daniel Drake * Copyright © 2001 Johannes Erdfelt * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #ifdef HAVE_SYS_TIME_H #include #endif #ifdef USBI_TIMERFD_AVAILABLE #include #endif #include "libusbi.h" #include "hotplug.h" /** * \page libusb_io Synchronous and asynchronous device I/O * * \section io_intro Introduction * * If you're using libusb in your application, you're probably wanting to * perform I/O with devices - you want to perform USB data transfers. * * libusb offers two separate interfaces for device I/O. This page aims to * introduce the two in order to help you decide which one is more suitable * for your application. You can also choose to use both interfaces in your * application by considering each transfer on a case-by-case basis. * * Once you have read through the following discussion, you should consult the * detailed API documentation pages for the details: * - \ref libusb_syncio * - \ref libusb_asyncio * * \section theory Transfers at a logical level * * At a logical level, USB transfers typically happen in two parts. For * example, when reading data from a endpoint: * -# A request for data is sent to the device * -# Some time later, the incoming data is received by the host * * or when writing data to an endpoint: * * -# The data is sent to the device * -# Some time later, the host receives acknowledgement from the device that * the data has been transferred. * * There may be an indefinite delay between the two steps. Consider a * fictional USB input device with a button that the user can press. In order * to determine when the button is pressed, you would likely submit a request * to read data on a bulk or interrupt endpoint and wait for data to arrive. * Data will arrive when the button is pressed by the user, which is * potentially hours later. * * libusb offers both a synchronous and an asynchronous interface to performing * USB transfers. The main difference is that the synchronous interface * combines both steps indicated above into a single function call, whereas * the asynchronous interface separates them. * * \section sync The synchronous interface * * The synchronous I/O interface allows you to perform a USB transfer with * a single function call. When the function call returns, the transfer has * completed and you can parse the results. * * If you have used the libusb-0.1 before, this I/O style will seem familar to * you. libusb-0.1 only offered a synchronous interface. * * In our input device example, to read button presses you might write code * in the following style: \code unsigned char data[4]; int actual_length; int r = libusb_bulk_transfer(dev_handle, LIBUSB_ENDPOINT_IN, data, sizeof(data), &actual_length, 0); if (r == 0 && actual_length == sizeof(data)) { // results of the transaction can now be found in the data buffer // parse them here and report button press } else { error(); } \endcode * * The main advantage of this model is simplicity: you did everything with * a single simple function call. * * However, this interface has its limitations. Your application will sleep * inside libusb_bulk_transfer() until the transaction has completed. If it * takes the user 3 hours to press the button, your application will be * sleeping for that long. Execution will be tied up inside the library - * the entire thread will be useless for that duration. * * Another issue is that by tieing up the thread with that single transaction * there is no possibility of performing I/O with multiple endpoints and/or * multiple devices simultaneously, unless you resort to creating one thread * per transaction. * * Additionally, there is no opportunity to cancel the transfer after the * request has been submitted. * * For details on how to use the synchronous API, see the * \ref libusb_syncio "synchronous I/O API documentation" pages. * * \section async The asynchronous interface * * Asynchronous I/O is the most significant new feature in libusb-1.0. * Although it is a more complex interface, it solves all the issues detailed * above. * * Instead of providing which functions that block until the I/O has complete, * libusb's asynchronous interface presents non-blocking functions which * begin a transfer and then return immediately. Your application passes a * callback function pointer to this non-blocking function, which libusb will * call with the results of the transaction when it has completed. * * Transfers which have been submitted through the non-blocking functions * can be cancelled with a separate function call. * * The non-blocking nature of this interface allows you to be simultaneously * performing I/O to multiple endpoints on multiple devices, without having * to use threads. * * This added flexibility does come with some complications though: * - In the interest of being a lightweight library, libusb does not create * threads and can only operate when your application is calling into it. Your * application must call into libusb from it's main loop when events are ready * to be handled, or you must use some other scheme to allow libusb to * undertake whatever work needs to be done. * - libusb also needs to be called into at certain fixed points in time in * order to accurately handle transfer timeouts. * - Memory handling becomes more complex. You cannot use stack memory unless * the function with that stack is guaranteed not to return until the transfer * callback has finished executing. * - You generally lose some linearity from your code flow because submitting * the transfer request is done in a separate function from where the transfer * results are handled. This becomes particularly obvious when you want to * submit a second transfer based on the results of an earlier transfer. * * Internally, libusb's synchronous interface is expressed in terms of function * calls to the asynchronous interface. * * For details on how to use the asynchronous API, see the * \ref libusb_asyncio "asynchronous I/O API" documentation pages. */ /** * \page libusb_packetoverflow Packets and overflows * * \section packets Packet abstraction * * The USB specifications describe how data is transmitted in packets, with * constraints on packet size defined by endpoint descriptors. The host must * not send data payloads larger than the endpoint's maximum packet size. * * libusb and the underlying OS abstract out the packet concept, allowing you * to request transfers of any size. Internally, the request will be divided * up into correctly-sized packets. You do not have to be concerned with * packet sizes, but there is one exception when considering overflows. * * \section overflow Bulk/interrupt transfer overflows * * When requesting data on a bulk endpoint, libusb requires you to supply a * buffer and the maximum number of bytes of data that libusb can put in that * buffer. However, the size of the buffer is not communicated to the device - * the device is just asked to send any amount of data. * * There is no problem if the device sends an amount of data that is less than * or equal to the buffer size. libusb reports this condition to you through * the \ref libusb_transfer::actual_length "libusb_transfer.actual_length" * field. * * Problems may occur if the device attempts to send more data than can fit in * the buffer. libusb reports LIBUSB_TRANSFER_OVERFLOW for this condition but * other behaviour is largely undefined: actual_length may or may not be * accurate, the chunk of data that can fit in the buffer (before overflow) * may or may not have been transferred. * * Overflows are nasty, but can be avoided. Even though you were told to * ignore packets above, think about the lower level details: each transfer is * split into packets (typically small, with a maximum size of 512 bytes). * Overflows can only happen if the final packet in an incoming data transfer * is smaller than the actual packet that the device wants to transfer. * Therefore, you will never see an overflow if your transfer buffer size is a * multiple of the endpoint's packet size: the final packet will either * fill up completely or will be only partially filled. */ /** * @defgroup libusb_asyncio Asynchronous device I/O * * This page details libusb's asynchronous (non-blocking) API for USB device * I/O. This interface is very powerful but is also quite complex - you will * need to read this page carefully to understand the necessary considerations * and issues surrounding use of this interface. Simplistic applications * may wish to consider the \ref libusb_syncio "synchronous I/O API" instead. * * The asynchronous interface is built around the idea of separating transfer * submission and handling of transfer completion (the synchronous model * combines both of these into one). There may be a long delay between * submission and completion, however the asynchronous submission function * is non-blocking so will return control to your application during that * potentially long delay. * * \section asyncabstraction Transfer abstraction * * For the asynchronous I/O, libusb implements the concept of a generic * transfer entity for all types of I/O (control, bulk, interrupt, * isochronous). The generic transfer object must be treated slightly * differently depending on which type of I/O you are performing with it. * * This is represented by the public libusb_transfer structure type. * * \section asynctrf Asynchronous transfers * * We can view asynchronous I/O as a 5 step process: * -# Allocation: allocate a libusb_transfer * -# Filling: populate the libusb_transfer instance with information * about the transfer you wish to perform * -# Submission: ask libusb to submit the transfer * -# Completion handling: examine transfer results in the * libusb_transfer structure * -# Deallocation: clean up resources * * * \subsection asyncalloc Allocation * * This step involves allocating memory for a USB transfer. This is the * generic transfer object mentioned above. At this stage, the transfer * is "blank" with no details about what type of I/O it will be used for. * * Allocation is done with the libusb_alloc_transfer() function. You must use * this function rather than allocating your own transfers. * * \subsection asyncfill Filling * * This step is where you take a previously allocated transfer and fill it * with information to determine the message type and direction, data buffer, * callback function, etc. * * You can either fill the required fields yourself or you can use the * helper functions: libusb_fill_control_transfer(), libusb_fill_bulk_transfer() * and libusb_fill_interrupt_transfer(). * * \subsection asyncsubmit Submission * * When you have allocated a transfer and filled it, you can submit it using * libusb_submit_transfer(). This function returns immediately but can be * regarded as firing off the I/O request in the background. * * \subsection asynccomplete Completion handling * * After a transfer has been submitted, one of four things can happen to it: * * - The transfer completes (i.e. some data was transferred) * - The transfer has a timeout and the timeout expires before all data is * transferred * - The transfer fails due to an error * - The transfer is cancelled * * Each of these will cause the user-specified transfer callback function to * be invoked. It is up to the callback function to determine which of the * above actually happened and to act accordingly. * * The user-specified callback is passed a pointer to the libusb_transfer * structure which was used to setup and submit the transfer. At completion * time, libusb has populated this structure with results of the transfer: * success or failure reason, number of bytes of data transferred, etc. See * the libusb_transfer structure documentation for more information. * * Important Note: The user-specified callback is called from an event * handling context. It is therefore important that no calls are made into * libusb that will attempt to perform any event handling. Examples of such * functions are any listed in the \ref libusb_syncio "synchronous API" and any of * the blocking functions that retrieve \ref libusb_desc "USB descriptors". * * \subsection Deallocation * * When a transfer has completed (i.e. the callback function has been invoked), * you are advised to free the transfer (unless you wish to resubmit it, see * below). Transfers are deallocated with libusb_free_transfer(). * * It is undefined behaviour to free a transfer which has not completed. * * \section asyncresubmit Resubmission * * You may be wondering why allocation, filling, and submission are all * separated above where they could reasonably be combined into a single * operation. * * The reason for separation is to allow you to resubmit transfers without * having to allocate new ones every time. This is especially useful for * common situations dealing with interrupt endpoints - you allocate one * transfer, fill and submit it, and when it returns with results you just * resubmit it for the next interrupt. * * \section asynccancel Cancellation * * Another advantage of using the asynchronous interface is that you have * the ability to cancel transfers which have not yet completed. This is * done by calling the libusb_cancel_transfer() function. * * libusb_cancel_transfer() is asynchronous/non-blocking in itself. When the * cancellation actually completes, the transfer's callback function will * be invoked, and the callback function should check the transfer status to * determine that it was cancelled. * * Freeing the transfer after it has been cancelled but before cancellation * has completed will result in undefined behaviour. * * When a transfer is cancelled, some of the data may have been transferred. * libusb will communicate this to you in the transfer callback. Do not assume * that no data was transferred. * * \section bulk_overflows Overflows on device-to-host bulk/interrupt endpoints * * If your device does not have predictable transfer sizes (or it misbehaves), * your application may submit a request for data on an IN endpoint which is * smaller than the data that the device wishes to send. In some circumstances * this will cause an overflow, which is a nasty condition to deal with. See * the \ref libusb_packetoverflow page for discussion. * * \section asyncctrl Considerations for control transfers * * The libusb_transfer structure is generic and hence does not * include specific fields for the control-specific setup packet structure. * * In order to perform a control transfer, you must place the 8-byte setup * packet at the start of the data buffer. To simplify this, you could * cast the buffer pointer to type struct libusb_control_setup, or you can * use the helper function libusb_fill_control_setup(). * * The wLength field placed in the setup packet must be the length you would * expect to be sent in the setup packet: the length of the payload that * follows (or the expected maximum number of bytes to receive). However, * the length field of the libusb_transfer object must be the length of * the data buffer - i.e. it should be wLength plus the size of * the setup packet (LIBUSB_CONTROL_SETUP_SIZE). * * If you use the helper functions, this is simplified for you: * -# Allocate a buffer of size LIBUSB_CONTROL_SETUP_SIZE plus the size of the * data you are sending/requesting. * -# Call libusb_fill_control_setup() on the data buffer, using the transfer * request size as the wLength value (i.e. do not include the extra space you * allocated for the control setup). * -# If this is a host-to-device transfer, place the data to be transferred * in the data buffer, starting at offset LIBUSB_CONTROL_SETUP_SIZE. * -# Call libusb_fill_control_transfer() to associate the data buffer with * the transfer (and to set the remaining details such as callback and timeout). * - Note that there is no parameter to set the length field of the transfer. * The length is automatically inferred from the wLength field of the setup * packet. * -# Submit the transfer. * * The multi-byte control setup fields (wValue, wIndex and wLength) must * be given in little-endian byte order (the endianness of the USB bus). * Endianness conversion is transparently handled by * libusb_fill_control_setup() which is documented to accept host-endian * values. * * Further considerations are needed when handling transfer completion in * your callback function: * - As you might expect, the setup packet will still be sitting at the start * of the data buffer. * - If this was a device-to-host transfer, the received data will be sitting * at offset LIBUSB_CONTROL_SETUP_SIZE into the buffer. * - The actual_length field of the transfer structure is relative to the * wLength of the setup packet, rather than the size of the data buffer. So, * if your wLength was 4, your transfer's length was 12, then you * should expect an actual_length of 4 to indicate that the data was * transferred in entirity. * * To simplify parsing of setup packets and obtaining the data from the * correct offset, you may wish to use the libusb_control_transfer_get_data() * and libusb_control_transfer_get_setup() functions within your transfer * callback. * * Even though control endpoints do not halt, a completed control transfer * may have a LIBUSB_TRANSFER_STALL status code. This indicates the control * request was not supported. * * \section asyncintr Considerations for interrupt transfers * * All interrupt transfers are performed using the polling interval presented * by the bInterval value of the endpoint descriptor. * * \section asynciso Considerations for isochronous transfers * * Isochronous transfers are more complicated than transfers to * non-isochronous endpoints. * * To perform I/O to an isochronous endpoint, allocate the transfer by calling * libusb_alloc_transfer() with an appropriate number of isochronous packets. * * During filling, set \ref libusb_transfer::type "type" to * \ref libusb_transfer_type::LIBUSB_TRANSFER_TYPE_ISOCHRONOUS * "LIBUSB_TRANSFER_TYPE_ISOCHRONOUS", and set * \ref libusb_transfer::num_iso_packets "num_iso_packets" to a value less than * or equal to the number of packets you requested during allocation. * libusb_alloc_transfer() does not set either of these fields for you, given * that you might not even use the transfer on an isochronous endpoint. * * Next, populate the length field for the first num_iso_packets entries in * the \ref libusb_transfer::iso_packet_desc "iso_packet_desc" array. Section * 5.6.3 of the USB2 specifications describe how the maximum isochronous * packet length is determined by the wMaxPacketSize field in the endpoint * descriptor. * Two functions can help you here: * * - libusb_get_max_iso_packet_size() is an easy way to determine the max * packet size for an isochronous endpoint. Note that the maximum packet * size is actually the maximum number of bytes that can be transmitted in * a single microframe, therefore this function multiplies the maximum number * of bytes per transaction by the number of transaction opportunities per * microframe. * - libusb_set_iso_packet_lengths() assigns the same length to all packets * within a transfer, which is usually what you want. * * For outgoing transfers, you'll obviously fill the buffer and populate the * packet descriptors in hope that all the data gets transferred. For incoming * transfers, you must ensure the buffer has sufficient capacity for * the situation where all packets transfer the full amount of requested data. * * Completion handling requires some extra consideration. The * \ref libusb_transfer::actual_length "actual_length" field of the transfer * is meaningless and should not be examined; instead you must refer to the * \ref libusb_iso_packet_descriptor::actual_length "actual_length" field of * each individual packet. * * The \ref libusb_transfer::status "status" field of the transfer is also a * little misleading: * - If the packets were submitted and the isochronous data microframes * completed normally, status will have value * \ref libusb_transfer_status::LIBUSB_TRANSFER_COMPLETED * "LIBUSB_TRANSFER_COMPLETED". Note that bus errors and software-incurred * delays are not counted as transfer errors; the transfer.status field may * indicate COMPLETED even if some or all of the packets failed. Refer to * the \ref libusb_iso_packet_descriptor::status "status" field of each * individual packet to determine packet failures. * - The status field will have value * \ref libusb_transfer_status::LIBUSB_TRANSFER_ERROR * "LIBUSB_TRANSFER_ERROR" only when serious errors were encountered. * - Other transfer status codes occur with normal behaviour. * * The data for each packet will be found at an offset into the buffer that * can be calculated as if each prior packet completed in full. The * libusb_get_iso_packet_buffer() and libusb_get_iso_packet_buffer_simple() * functions may help you here. * * Note: Some operating systems (e.g. Linux) may impose limits on the * length of individual isochronous packets and/or the total length of the * isochronous transfer. Such limits can be difficult for libusb to detect, * so the library will simply try and submit the transfer as set up by you. * If the transfer fails to submit because it is too large, * libusb_submit_transfer() will return * \ref libusb_error::LIBUSB_ERROR_INVALID_PARAM "LIBUSB_ERROR_INVALID_PARAM". * * \section asyncmem Memory caveats * * In most circumstances, it is not safe to use stack memory for transfer * buffers. This is because the function that fired off the asynchronous * transfer may return before libusb has finished using the buffer, and when * the function returns it's stack gets destroyed. This is true for both * host-to-device and device-to-host transfers. * * The only case in which it is safe to use stack memory is where you can * guarantee that the function owning the stack space for the buffer does not * return until after the transfer's callback function has completed. In every * other case, you need to use heap memory instead. * * \section asyncflags Fine control * * Through using this asynchronous interface, you may find yourself repeating * a few simple operations many times. You can apply a bitwise OR of certain * flags to a transfer to simplify certain things: * - \ref libusb_transfer_flags::LIBUSB_TRANSFER_SHORT_NOT_OK * "LIBUSB_TRANSFER_SHORT_NOT_OK" results in transfers which transferred * less than the requested amount of data being marked with status * \ref libusb_transfer_status::LIBUSB_TRANSFER_ERROR "LIBUSB_TRANSFER_ERROR" * (they would normally be regarded as COMPLETED) * - \ref libusb_transfer_flags::LIBUSB_TRANSFER_FREE_BUFFER * "LIBUSB_TRANSFER_FREE_BUFFER" allows you to ask libusb to free the transfer * buffer when freeing the transfer. * - \ref libusb_transfer_flags::LIBUSB_TRANSFER_FREE_TRANSFER * "LIBUSB_TRANSFER_FREE_TRANSFER" causes libusb to automatically free the * transfer after the transfer callback returns. * * \section asyncevent Event handling * * An asynchronous model requires that libusb perform work at various * points in time - namely processing the results of previously-submitted * transfers and invoking the user-supplied callback function. * * This gives rise to the libusb_handle_events() function which your * application must call into when libusb has work do to. This gives libusb * the opportunity to reap pending transfers, invoke callbacks, etc. * * There are 2 different approaches to dealing with libusb_handle_events: * * -# Repeatedly call libusb_handle_events() in blocking mode from a dedicated * thread. * -# Integrate libusb with your application's main event loop. libusb * exposes a set of file descriptors which allow you to do this. * * The first approach has the big advantage that it will also work on Windows * were libusb' poll API for select / poll integration is not available. So * if you want to support Windows and use the async API, you must use this * approach, see the \ref eventthread "Using an event handling thread" section * below for details. * * If you prefer a single threaded approach with a single central event loop, * see the \ref libusb_poll "polling and timing" section for how to integrate libusb * into your application's main event loop. * * \section eventthread Using an event handling thread * * Lets begin with stating the obvious: If you're going to use a separate * thread for libusb event handling, your callback functions MUST be * threadsafe. * * Other then that doing event handling from a separate thread, is mostly * simple. You can use an event thread function as follows: \code void *event_thread_func(void *ctx) { while (event_thread_run) libusb_handle_events(ctx); return NULL; } \endcode * * There is one caveat though, stopping this thread requires setting the * event_thread_run variable to 0, and after that libusb_handle_events() needs * to return control to event_thread_func. But unless some event happens, * libusb_handle_events() will not return. * * There are 2 different ways of dealing with this, depending on if your * application uses libusb' \ref libusb_hotplug "hotplug" support or not. * * Applications which do not use hotplug support, should not start the event * thread until after their first call to libusb_open(), and should stop the * thread when closing the last open device as follows: \code void my_close_handle(libusb_device_handle *dev_handle) { if (open_devs == 1) event_thread_run = 0; libusb_close(dev_handle); // This wakes up libusb_handle_events() if (open_devs == 1) pthread_join(event_thread); open_devs--; } \endcode * * Applications using hotplug support should start the thread at program init, * after having successfully called libusb_hotplug_register_callback(), and * should stop the thread at program exit as follows: \code void my_libusb_exit(void) { event_thread_run = 0; libusb_hotplug_deregister_callback(ctx, hotplug_cb_handle); // This wakes up libusb_handle_events() pthread_join(event_thread); libusb_exit(ctx); } \endcode */ /** * @defgroup libusb_poll Polling and timing * * This page documents libusb's functions for polling events and timing. * These functions are only necessary for users of the * \ref libusb_asyncio "asynchronous API". If you are only using the simpler * \ref libusb_syncio "synchronous API" then you do not need to ever call these * functions. * * The justification for the functionality described here has already been * discussed in the \ref asyncevent "event handling" section of the * asynchronous API documentation. In summary, libusb does not create internal * threads for event processing and hence relies on your application calling * into libusb at certain points in time so that pending events can be handled. * * Your main loop is probably already calling poll() or select() or a * variant on a set of file descriptors for other event sources (e.g. keyboard * button presses, mouse movements, network sockets, etc). You then add * libusb's file descriptors to your poll()/select() calls, and when activity * is detected on such descriptors you know it is time to call * libusb_handle_events(). * * There is one final event handling complication. libusb supports * asynchronous transfers which time out after a specified time period. * * On some platforms a timerfd is used, so the timeout handling is just another * fd, on other platforms this requires that libusb is called into at or after * the timeout to handle it. So, in addition to considering libusb's file * descriptors in your main event loop, you must also consider that libusb * sometimes needs to be called into at fixed points in time even when there * is no file descriptor activity, see \ref polltime details. * * In order to know precisely when libusb needs to be called into, libusb * offers you a set of pollable file descriptors and information about when * the next timeout expires. * * If you are using the asynchronous I/O API, you must take one of the two * following options, otherwise your I/O will not complete. * * \section pollsimple The simple option * * If your application revolves solely around libusb and does not need to * handle other event sources, you can have a program structure as follows: \code // initialize libusb // find and open device // maybe fire off some initial async I/O while (user_has_not_requested_exit) libusb_handle_events(ctx); // clean up and exit \endcode * * With such a simple main loop, you do not have to worry about managing * sets of file descriptors or handling timeouts. libusb_handle_events() will * handle those details internally. * * \section libusb_pollmain The more advanced option * * \note This functionality is currently only available on Unix-like platforms. * On Windows, libusb_get_pollfds() simply returns NULL. Applications which * want to support Windows are advised to use an \ref eventthread * "event handling thread" instead. * * In more advanced applications, you will already have a main loop which * is monitoring other event sources: network sockets, X11 events, mouse * movements, etc. Through exposing a set of file descriptors, libusb is * designed to cleanly integrate into such main loops. * * In addition to polling file descriptors for the other event sources, you * take a set of file descriptors from libusb and monitor those too. When you * detect activity on libusb's file descriptors, you call * libusb_handle_events_timeout() in non-blocking mode. * * What's more, libusb may also need to handle events at specific moments in * time. No file descriptor activity is generated at these times, so your * own application needs to be continually aware of when the next one of these * moments occurs (through calling libusb_get_next_timeout()), and then it * needs to call libusb_handle_events_timeout() in non-blocking mode when * these moments occur. This means that you need to adjust your * poll()/select() timeout accordingly. * * libusb provides you with a set of file descriptors to poll and expects you * to poll all of them, treating them as a single entity. The meaning of each * file descriptor in the set is an internal implementation detail, * platform-dependent and may vary from release to release. Don't try and * interpret the meaning of the file descriptors, just do as libusb indicates, * polling all of them at once. * * In pseudo-code, you want something that looks like: \code // initialise libusb libusb_get_pollfds(ctx) while (user has not requested application exit) { libusb_get_next_timeout(ctx); poll(on libusb file descriptors plus any other event sources of interest, using a timeout no larger than the value libusb just suggested) if (poll() indicated activity on libusb file descriptors) libusb_handle_events_timeout(ctx, &zero_tv); if (time has elapsed to or beyond the libusb timeout) libusb_handle_events_timeout(ctx, &zero_tv); // handle events from other sources here } // clean up and exit \endcode * * \subsection polltime Notes on time-based events * * The above complication with having to track time and call into libusb at * specific moments is a bit of a headache. For maximum compatibility, you do * need to write your main loop as above, but you may decide that you can * restrict the supported platforms of your application and get away with * a more simplistic scheme. * * These time-based event complications are \b not required on the following * platforms: * - Darwin * - Linux, provided that the following version requirements are satisfied: * - Linux v2.6.27 or newer, compiled with timerfd support * - glibc v2.9 or newer * - libusb v1.0.5 or newer * * Under these configurations, libusb_get_next_timeout() will \em always return * 0, so your main loop can be simplified to: \code // initialise libusb libusb_get_pollfds(ctx) while (user has not requested application exit) { poll(on libusb file descriptors plus any other event sources of interest, using any timeout that you like) if (poll() indicated activity on libusb file descriptors) libusb_handle_events_timeout(ctx, &zero_tv); // handle events from other sources here } // clean up and exit \endcode * * Do remember that if you simplify your main loop to the above, you will * lose compatibility with some platforms (including legacy Linux platforms, * and any future platforms supported by libusb which may have time-based * event requirements). The resultant problems will likely appear as * strange bugs in your application. * * You can use the libusb_pollfds_handle_timeouts() function to do a runtime * check to see if it is safe to ignore the time-based event complications. * If your application has taken the shortcut of ignoring libusb's next timeout * in your main loop, then you are advised to check the return value of * libusb_pollfds_handle_timeouts() during application startup, and to abort * if the platform does suffer from these timing complications. * * \subsection fdsetchange Changes in the file descriptor set * * The set of file descriptors that libusb uses as event sources may change * during the life of your application. Rather than having to repeatedly * call libusb_get_pollfds(), you can set up notification functions for when * the file descriptor set changes using libusb_set_pollfd_notifiers(). * * \subsection mtissues Multi-threaded considerations * * Unfortunately, the situation is complicated further when multiple threads * come into play. If two threads are monitoring the same file descriptors, * the fact that only one thread will be woken up when an event occurs causes * some headaches. * * The events lock, event waiters lock, and libusb_handle_events_locked() * entities are added to solve these problems. You do not need to be concerned * with these entities otherwise. * * See the extra documentation: \ref libusb_mtasync */ /** \page libusb_mtasync Multi-threaded applications and asynchronous I/O * * libusb is a thread-safe library, but extra considerations must be applied * to applications which interact with libusb from multiple threads. * * The underlying issue that must be addressed is that all libusb I/O * revolves around monitoring file descriptors through the poll()/select() * system calls. This is directly exposed at the * \ref libusb_asyncio "asynchronous interface" but it is important to note that the * \ref libusb_syncio "synchronous interface" is implemented on top of the * asynchonrous interface, therefore the same considerations apply. * * The issue is that if two or more threads are concurrently calling poll() * or select() on libusb's file descriptors then only one of those threads * will be woken up when an event arrives. The others will be completely * oblivious that anything has happened. * * Consider the following pseudo-code, which submits an asynchronous transfer * then waits for its completion. This style is one way you could implement a * synchronous interface on top of the asynchronous interface (and libusb * does something similar, albeit more advanced due to the complications * explained on this page). * \code void cb(struct libusb_transfer *transfer) { int *completed = transfer->user_data; *completed = 1; } void myfunc() { struct libusb_transfer *transfer; unsigned char buffer[LIBUSB_CONTROL_SETUP_SIZE] __attribute__ ((aligned (2))); int completed = 0; transfer = libusb_alloc_transfer(0); libusb_fill_control_setup(buffer, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, 0x04, 0x01, 0, 0); libusb_fill_control_transfer(transfer, dev, buffer, cb, &completed, 1000); libusb_submit_transfer(transfer); while (!completed) { poll(libusb file descriptors, 120*1000); if (poll indicates activity) libusb_handle_events_timeout(ctx, &zero_tv); } printf("completed!"); // other code here } \endcode * * Here we are serializing completion of an asynchronous event * against a condition - the condition being completion of a specific transfer. * The poll() loop has a long timeout to minimize CPU usage during situations * when nothing is happening (it could reasonably be unlimited). * * If this is the only thread that is polling libusb's file descriptors, there * is no problem: there is no danger that another thread will swallow up the * event that we are interested in. On the other hand, if there is another * thread polling the same descriptors, there is a chance that it will receive * the event that we were interested in. In this situation, myfunc() * will only realise that the transfer has completed on the next iteration of * the loop, up to 120 seconds later. Clearly a two-minute delay is * undesirable, and don't even think about using short timeouts to circumvent * this issue! * * The solution here is to ensure that no two threads are ever polling the * file descriptors at the same time. A naive implementation of this would * impact the capabilities of the library, so libusb offers the scheme * documented below to ensure no loss of functionality. * * Before we go any further, it is worth mentioning that all libusb-wrapped * event handling procedures fully adhere to the scheme documented below. * This includes libusb_handle_events() and its variants, and all the * synchronous I/O functions - libusb hides this headache from you. * * \section Using libusb_handle_events() from multiple threads * * Even when only using libusb_handle_events() and synchronous I/O functions, * you can still have a race condition. You might be tempted to solve the * above with libusb_handle_events() like so: * \code libusb_submit_transfer(transfer); while (!completed) { libusb_handle_events(ctx); } printf("completed!"); \endcode * * This however has a race between the checking of completed and * libusb_handle_events() acquiring the events lock, so another thread * could have completed the transfer, resulting in this thread hanging * until either a timeout or another event occurs. See also commit * 6696512aade99bb15d6792af90ae329af270eba6 which fixes this in the * synchronous API implementation of libusb. * * Fixing this race requires checking the variable completed only after * taking the event lock, which defeats the concept of just calling * libusb_handle_events() without worrying about locking. This is why * libusb-1.0.9 introduces the new libusb_handle_events_timeout_completed() * and libusb_handle_events_completed() functions, which handles doing the * completion check for you after they have acquired the lock: * \code libusb_submit_transfer(transfer); while (!completed) { libusb_handle_events_completed(ctx, &completed); } printf("completed!"); \endcode * * This nicely fixes the race in our example. Note that if all you want to * do is submit a single transfer and wait for its completion, then using * one of the synchronous I/O functions is much easier. * * \section eventlock The events lock * * The problem is when we consider the fact that libusb exposes file * descriptors to allow for you to integrate asynchronous USB I/O into * existing main loops, effectively allowing you to do some work behind * libusb's back. If you do take libusb's file descriptors and pass them to * poll()/select() yourself, you need to be aware of the associated issues. * * The first concept to be introduced is the events lock. The events lock * is used to serialize threads that want to handle events, such that only * one thread is handling events at any one time. * * You must take the events lock before polling libusb file descriptors, * using libusb_lock_events(). You must release the lock as soon as you have * aborted your poll()/select() loop, using libusb_unlock_events(). * * \section threadwait Letting other threads do the work for you * * Although the events lock is a critical part of the solution, it is not * enough on it's own. You might wonder if the following is sufficient... \code libusb_lock_events(ctx); while (!completed) { poll(libusb file descriptors, 120*1000); if (poll indicates activity) libusb_handle_events_timeout(ctx, &zero_tv); } libusb_unlock_events(ctx); \endcode * ...and the answer is that it is not. This is because the transfer in the * code shown above may take a long time (say 30 seconds) to complete, and * the lock is not released until the transfer is completed. * * Another thread with similar code that wants to do event handling may be * working with a transfer that completes after a few milliseconds. Despite * having such a quick completion time, the other thread cannot check that * status of its transfer until the code above has finished (30 seconds later) * due to contention on the lock. * * To solve this, libusb offers you a mechanism to determine when another * thread is handling events. It also offers a mechanism to block your thread * until the event handling thread has completed an event (and this mechanism * does not involve polling of file descriptors). * * After determining that another thread is currently handling events, you * obtain the event waiters lock using libusb_lock_event_waiters(). * You then re-check that some other thread is still handling events, and if * so, you call libusb_wait_for_event(). * * libusb_wait_for_event() puts your application to sleep until an event * occurs, or until a thread releases the events lock. When either of these * things happen, your thread is woken up, and should re-check the condition * it was waiting on. It should also re-check that another thread is handling * events, and if not, it should start handling events itself. * * This looks like the following, as pseudo-code: \code retry: if (libusb_try_lock_events(ctx) == 0) { // we obtained the event lock: do our own event handling while (!completed) { if (!libusb_event_handling_ok(ctx)) { libusb_unlock_events(ctx); goto retry; } poll(libusb file descriptors, 120*1000); if (poll indicates activity) libusb_handle_events_locked(ctx, 0); } libusb_unlock_events(ctx); } else { // another thread is doing event handling. wait for it to signal us that // an event has completed libusb_lock_event_waiters(ctx); while (!completed) { // now that we have the event waiters lock, double check that another // thread is still handling events for us. (it may have ceased handling // events in the time it took us to reach this point) if (!libusb_event_handler_active(ctx)) { // whoever was handling events is no longer doing so, try again libusb_unlock_event_waiters(ctx); goto retry; } libusb_wait_for_event(ctx, NULL); } libusb_unlock_event_waiters(ctx); } printf("completed!\n"); \endcode * * A naive look at the above code may suggest that this can only support * one event waiter (hence a total of 2 competing threads, the other doing * event handling), because the event waiter seems to have taken the event * waiters lock while waiting for an event. However, the system does support * multiple event waiters, because libusb_wait_for_event() actually drops * the lock while waiting, and reaquires it before continuing. * * We have now implemented code which can dynamically handle situations where * nobody is handling events (so we should do it ourselves), and it can also * handle situations where another thread is doing event handling (so we can * piggyback onto them). It is also equipped to handle a combination of * the two, for example, another thread is doing event handling, but for * whatever reason it stops doing so before our condition is met, so we take * over the event handling. * * Four functions were introduced in the above pseudo-code. Their importance * should be apparent from the code shown above. * -# libusb_try_lock_events() is a non-blocking function which attempts * to acquire the events lock but returns a failure code if it is contended. * -# libusb_event_handling_ok() checks that libusb is still happy for your * thread to be performing event handling. Sometimes, libusb needs to * interrupt the event handler, and this is how you can check if you have * been interrupted. If this function returns 0, the correct behaviour is * for you to give up the event handling lock, and then to repeat the cycle. * The following libusb_try_lock_events() will fail, so you will become an * events waiter. For more information on this, read \ref fullstory below. * -# libusb_handle_events_locked() is a variant of * libusb_handle_events_timeout() that you can call while holding the * events lock. libusb_handle_events_timeout() itself implements similar * logic to the above, so be sure not to call it when you are * "working behind libusb's back", as is the case here. * -# libusb_event_handler_active() determines if someone is currently * holding the events lock * * You might be wondering why there is no function to wake up all threads * blocked on libusb_wait_for_event(). This is because libusb can do this * internally: it will wake up all such threads when someone calls * libusb_unlock_events() or when a transfer completes (at the point after its * callback has returned). * * \subsection fullstory The full story * * The above explanation should be enough to get you going, but if you're * really thinking through the issues then you may be left with some more * questions regarding libusb's internals. If you're curious, read on, and if * not, skip to the next section to avoid confusing yourself! * * The immediate question that may spring to mind is: what if one thread * modifies the set of file descriptors that need to be polled while another * thread is doing event handling? * * There are 2 situations in which this may happen. * -# libusb_open() will add another file descriptor to the poll set, * therefore it is desirable to interrupt the event handler so that it * restarts, picking up the new descriptor. * -# libusb_close() will remove a file descriptor from the poll set. There * are all kinds of race conditions that could arise here, so it is * important that nobody is doing event handling at this time. * * libusb handles these issues internally, so application developers do not * have to stop their event handlers while opening/closing devices. Here's how * it works, focusing on the libusb_close() situation first: * * -# During initialization, libusb opens an internal pipe, and it adds the read * end of this pipe to the set of file descriptors to be polled. * -# During libusb_close(), libusb writes some dummy data on this event pipe. * This immediately interrupts the event handler. libusb also records * internally that it is trying to interrupt event handlers for this * high-priority event. * -# At this point, some of the functions described above start behaving * differently: * - libusb_event_handling_ok() starts returning 1, indicating that it is NOT * OK for event handling to continue. * - libusb_try_lock_events() starts returning 1, indicating that another * thread holds the event handling lock, even if the lock is uncontended. * - libusb_event_handler_active() starts returning 1, indicating that * another thread is doing event handling, even if that is not true. * -# The above changes in behaviour result in the event handler stopping and * giving up the events lock very quickly, giving the high-priority * libusb_close() operation a "free ride" to acquire the events lock. All * threads that are competing to do event handling become event waiters. * -# With the events lock held inside libusb_close(), libusb can safely remove * a file descriptor from the poll set, in the safety of knowledge that * nobody is polling those descriptors or trying to access the poll set. * -# After obtaining the events lock, the close operation completes very * quickly (usually a matter of milliseconds) and then immediately releases * the events lock. * -# At the same time, the behaviour of libusb_event_handling_ok() and friends * reverts to the original, documented behaviour. * -# The release of the events lock causes the threads that are waiting for * events to be woken up and to start competing to become event handlers * again. One of them will succeed; it will then re-obtain the list of poll * descriptors, and USB I/O will then continue as normal. * * libusb_open() is similar, and is actually a more simplistic case. Upon a * call to libusb_open(): * * -# The device is opened and a file descriptor is added to the poll set. * -# libusb sends some dummy data on the event pipe, and records that it * is trying to modify the poll descriptor set. * -# The event handler is interrupted, and the same behaviour change as for * libusb_close() takes effect, causing all event handling threads to become * event waiters. * -# The libusb_open() implementation takes its free ride to the events lock. * -# Happy that it has successfully paused the events handler, libusb_open() * releases the events lock. * -# The event waiter threads are all woken up and compete to become event * handlers again. The one that succeeds will obtain the list of poll * descriptors again, which will include the addition of the new device. * * \subsection concl Closing remarks * * The above may seem a little complicated, but hopefully I have made it clear * why such complications are necessary. Also, do not forget that this only * applies to applications that take libusb's file descriptors and integrate * them into their own polling loops. * * You may decide that it is OK for your multi-threaded application to ignore * some of the rules and locks detailed above, because you don't think that * two threads can ever be polling the descriptors at the same time. If that * is the case, then that's good news for you because you don't have to worry. * But be careful here; remember that the synchronous I/O functions do event * handling internally. If you have one thread doing event handling in a loop * (without implementing the rules and locking semantics documented above) * and another trying to send a synchronous USB transfer, you will end up with * two threads monitoring the same descriptors, and the above-described * undesirable behaviour occurring. The solution is for your polling thread to * play by the rules; the synchronous I/O functions do so, and this will result * in them getting along in perfect harmony. * * If you do have a dedicated thread doing event handling, it is perfectly * legal for it to take the event handling lock for long periods of time. Any * synchronous I/O functions you call from other threads will transparently * fall back to the "event waiters" mechanism detailed above. The only * consideration that your event handling thread must apply is the one related * to libusb_event_handling_ok(): you must call this before every poll(), and * give up the events lock if instructed. */ int usbi_io_init(struct libusb_context *ctx) { int r; usbi_mutex_init(&ctx->flying_transfers_lock); usbi_mutex_init(&ctx->events_lock); usbi_mutex_init(&ctx->event_waiters_lock); usbi_cond_init(&ctx->event_waiters_cond); usbi_mutex_init(&ctx->event_data_lock); usbi_tls_key_create(&ctx->event_handling_key); list_init(&ctx->flying_transfers); list_init(&ctx->ipollfds); list_init(&ctx->hotplug_msgs); list_init(&ctx->completed_transfers); /* FIXME should use an eventfd on kernels that support it */ r = usbi_pipe(ctx->event_pipe); if (r < 0) { r = LIBUSB_ERROR_OTHER; goto err; } r = usbi_add_pollfd(ctx, ctx->event_pipe[0], POLLIN); if (r < 0) goto err_close_pipe; #ifdef USBI_TIMERFD_AVAILABLE ctx->timerfd = timerfd_create(usbi_backend.get_timerfd_clockid(), TFD_NONBLOCK | TFD_CLOEXEC); if (ctx->timerfd >= 0) { usbi_dbg("using timerfd for timeouts"); r = usbi_add_pollfd(ctx, ctx->timerfd, POLLIN); if (r < 0) goto err_close_timerfd; } else { usbi_dbg("timerfd not available (code %d error %d)", ctx->timerfd, errno); ctx->timerfd = -1; } #endif return 0; #ifdef USBI_TIMERFD_AVAILABLE err_close_timerfd: close(ctx->timerfd); usbi_remove_pollfd(ctx, ctx->event_pipe[0]); #endif err_close_pipe: usbi_close(ctx->event_pipe[0]); usbi_close(ctx->event_pipe[1]); err: usbi_mutex_destroy(&ctx->flying_transfers_lock); usbi_mutex_destroy(&ctx->events_lock); usbi_mutex_destroy(&ctx->event_waiters_lock); usbi_cond_destroy(&ctx->event_waiters_cond); usbi_mutex_destroy(&ctx->event_data_lock); usbi_tls_key_delete(ctx->event_handling_key); return r; } void usbi_io_exit(struct libusb_context *ctx) { usbi_remove_pollfd(ctx, ctx->event_pipe[0]); usbi_close(ctx->event_pipe[0]); usbi_close(ctx->event_pipe[1]); #ifdef USBI_TIMERFD_AVAILABLE if (usbi_using_timerfd(ctx)) { usbi_remove_pollfd(ctx, ctx->timerfd); close(ctx->timerfd); } #endif usbi_mutex_destroy(&ctx->flying_transfers_lock); usbi_mutex_destroy(&ctx->events_lock); usbi_mutex_destroy(&ctx->event_waiters_lock); usbi_cond_destroy(&ctx->event_waiters_cond); usbi_mutex_destroy(&ctx->event_data_lock); usbi_tls_key_delete(ctx->event_handling_key); if (ctx->pollfds) free(ctx->pollfds); } static int calculate_timeout(struct usbi_transfer *transfer) { int r; struct timespec current_time; unsigned int timeout = USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer)->timeout; if (!timeout) { timerclear(&transfer->timeout); return 0; } r = usbi_backend.clock_gettime(USBI_CLOCK_MONOTONIC, ¤t_time); if (r < 0) { usbi_err(ITRANSFER_CTX(transfer), "failed to read monotonic clock, errno=%d", errno); return r; } current_time.tv_sec += timeout / 1000; current_time.tv_nsec += (timeout % 1000) * 1000000; while (current_time.tv_nsec >= 1000000000) { current_time.tv_nsec -= 1000000000; current_time.tv_sec++; } TIMESPEC_TO_TIMEVAL(&transfer->timeout, ¤t_time); return 0; } /** \ingroup libusb_asyncio * Allocate a libusb transfer with a specified number of isochronous packet * descriptors. The returned transfer is pre-initialized for you. When the new * transfer is no longer needed, it should be freed with * libusb_free_transfer(). * * Transfers intended for non-isochronous endpoints (e.g. control, bulk, * interrupt) should specify an iso_packets count of zero. * * For transfers intended for isochronous endpoints, specify an appropriate * number of packet descriptors to be allocated as part of the transfer. * The returned transfer is not specially initialized for isochronous I/O; * you are still required to set the * \ref libusb_transfer::num_iso_packets "num_iso_packets" and * \ref libusb_transfer::type "type" fields accordingly. * * It is safe to allocate a transfer with some isochronous packets and then * use it on a non-isochronous endpoint. If you do this, ensure that at time * of submission, num_iso_packets is 0 and that type is set appropriately. * * \param iso_packets number of isochronous packet descriptors to allocate * \returns a newly allocated transfer, or NULL on error */ DEFAULT_VISIBILITY struct libusb_transfer * LIBUSB_CALL libusb_alloc_transfer( int iso_packets) { struct libusb_transfer *transfer; size_t os_alloc_size = usbi_backend.transfer_priv_size; size_t alloc_size = sizeof(struct usbi_transfer) + sizeof(struct libusb_transfer) + (sizeof(struct libusb_iso_packet_descriptor) * iso_packets) + os_alloc_size; struct usbi_transfer *itransfer = calloc(1, alloc_size); if (!itransfer) return NULL; itransfer->num_iso_packets = iso_packets; usbi_mutex_init(&itransfer->lock); transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); usbi_dbg("transfer %p", transfer); return transfer; } /** \ingroup libusb_asyncio * Free a transfer structure. This should be called for all transfers * allocated with libusb_alloc_transfer(). * * If the \ref libusb_transfer_flags::LIBUSB_TRANSFER_FREE_BUFFER * "LIBUSB_TRANSFER_FREE_BUFFER" flag is set and the transfer buffer is * non-NULL, this function will also free the transfer buffer using the * standard system memory allocator (e.g. free()). * * It is legal to call this function with a NULL transfer. In this case, * the function will simply return safely. * * It is not legal to free an active transfer (one which has been submitted * and has not yet completed). * * \param transfer the transfer to free */ void API_EXPORTED libusb_free_transfer(struct libusb_transfer *transfer) { struct usbi_transfer *itransfer; if (!transfer) return; usbi_dbg("transfer %p", transfer); if (transfer->flags & LIBUSB_TRANSFER_FREE_BUFFER && transfer->buffer) free(transfer->buffer); itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); usbi_mutex_destroy(&itransfer->lock); free(itransfer); } #ifdef USBI_TIMERFD_AVAILABLE static int disarm_timerfd(struct libusb_context *ctx) { const struct itimerspec disarm_timer = { { 0, 0 }, { 0, 0 } }; int r; usbi_dbg(""); r = timerfd_settime(ctx->timerfd, 0, &disarm_timer, NULL); if (r < 0) return LIBUSB_ERROR_OTHER; else return 0; } /* iterates through the flying transfers, and rearms the timerfd based on the * next upcoming timeout. * must be called with flying_list locked. * returns 0 on success or a LIBUSB_ERROR code on failure. */ static int arm_timerfd_for_next_timeout(struct libusb_context *ctx) { struct usbi_transfer *transfer; list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { struct timeval *cur_tv = &transfer->timeout; /* if we've reached transfers of infinite timeout, then we have no * arming to do */ if (!timerisset(cur_tv)) goto disarm; /* act on first transfer that has not already been handled */ if (!(transfer->timeout_flags & (USBI_TRANSFER_TIMEOUT_HANDLED | USBI_TRANSFER_OS_HANDLES_TIMEOUT))) { int r; const struct itimerspec it = { {0, 0}, { cur_tv->tv_sec, cur_tv->tv_usec * 1000 } }; usbi_dbg("next timeout originally %dms", USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer)->timeout); r = timerfd_settime(ctx->timerfd, TFD_TIMER_ABSTIME, &it, NULL); if (r < 0) return LIBUSB_ERROR_OTHER; return 0; } } disarm: return disarm_timerfd(ctx); } #else static int arm_timerfd_for_next_timeout(struct libusb_context *ctx) { UNUSED(ctx); return 0; } #endif /* add a transfer to the (timeout-sorted) active transfers list. * This function will return non 0 if fails to update the timer, * in which case the transfer is *not* on the flying_transfers list. */ static int add_to_flying_list(struct usbi_transfer *transfer) { struct usbi_transfer *cur; struct timeval *timeout = &transfer->timeout; struct libusb_context *ctx = ITRANSFER_CTX(transfer); int r; int first = 1; r = calculate_timeout(transfer); if (r) return r; /* if we have no other flying transfers, start the list with this one */ if (list_empty(&ctx->flying_transfers)) { list_add(&transfer->list, &ctx->flying_transfers); goto out; } /* if we have infinite timeout, append to end of list */ if (!timerisset(timeout)) { list_add_tail(&transfer->list, &ctx->flying_transfers); /* first is irrelevant in this case */ goto out; } /* otherwise, find appropriate place in list */ list_for_each_entry(cur, &ctx->flying_transfers, list, struct usbi_transfer) { /* find first timeout that occurs after the transfer in question */ struct timeval *cur_tv = &cur->timeout; if (!timerisset(cur_tv) || (cur_tv->tv_sec > timeout->tv_sec) || (cur_tv->tv_sec == timeout->tv_sec && cur_tv->tv_usec > timeout->tv_usec)) { list_add_tail(&transfer->list, &cur->list); goto out; } first = 0; } /* first is 0 at this stage (list not empty) */ /* otherwise we need to be inserted at the end */ list_add_tail(&transfer->list, &ctx->flying_transfers); out: #ifdef USBI_TIMERFD_AVAILABLE if (first && usbi_using_timerfd(ctx) && timerisset(timeout)) { /* if this transfer has the lowest timeout of all active transfers, * rearm the timerfd with this transfer's timeout */ const struct itimerspec it = { {0, 0}, { timeout->tv_sec, timeout->tv_usec * 1000 } }; usbi_dbg("arm timerfd for timeout in %dms (first in line)", USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer)->timeout); r = timerfd_settime(ctx->timerfd, TFD_TIMER_ABSTIME, &it, NULL); if (r < 0) { usbi_warn(ctx, "failed to arm first timerfd (errno %d)", errno); r = LIBUSB_ERROR_OTHER; } } #else UNUSED(first); #endif if (r) list_del(&transfer->list); return r; } /* remove a transfer from the active transfers list. * This function will *always* remove the transfer from the * flying_transfers list. It will return a LIBUSB_ERROR code * if it fails to update the timer for the next timeout. */ static int remove_from_flying_list(struct usbi_transfer *transfer) { struct libusb_context *ctx = ITRANSFER_CTX(transfer); int rearm_timerfd; int r = 0; usbi_mutex_lock(&ctx->flying_transfers_lock); rearm_timerfd = (timerisset(&transfer->timeout) && list_first_entry(&ctx->flying_transfers, struct usbi_transfer, list) == transfer); list_del(&transfer->list); if (usbi_using_timerfd(ctx) && rearm_timerfd) r = arm_timerfd_for_next_timeout(ctx); usbi_mutex_unlock(&ctx->flying_transfers_lock); return r; } /** \ingroup libusb_asyncio * Submit a transfer. This function will fire off the USB transfer and then * return immediately. * * \param transfer the transfer to submit * \returns 0 on success * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns LIBUSB_ERROR_BUSY if the transfer has already been submitted. * \returns LIBUSB_ERROR_NOT_SUPPORTED if the transfer flags are not supported * by the operating system. * \returns LIBUSB_ERROR_INVALID_PARAM if the transfer size is larger than * the operating system and/or hardware can support * \returns another LIBUSB_ERROR code on other failure */ int API_EXPORTED libusb_submit_transfer(struct libusb_transfer *transfer) { struct usbi_transfer *itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); struct libusb_context *ctx = TRANSFER_CTX(transfer); int r; usbi_dbg("transfer %p", transfer); /* * Important note on locking, this function takes / releases locks * in the following order: * take flying_transfers_lock * take itransfer->lock * clear transfer * add to flying_transfers list * release flying_transfers_lock * submit transfer * release itransfer->lock * if submit failed: * take flying_transfers_lock * remove from flying_transfers list * release flying_transfers_lock * * Note that it takes locks in the order a-b and then releases them * in the same order a-b. This is somewhat unusual but not wrong, * release order is not important as long as *all* locks are released * before re-acquiring any locks. * * This means that the ordering of first releasing itransfer->lock * and then re-acquiring the flying_transfers_list on error is * important and must not be changed! * * This is done this way because when we take both locks we must always * take flying_transfers_lock first to avoid ab-ba style deadlocks with * the timeout handling and usbi_handle_disconnect paths. * * And we cannot release itransfer->lock before the submission is * complete otherwise timeout handling for transfers with short * timeouts may run before submission. */ usbi_mutex_lock(&ctx->flying_transfers_lock); usbi_mutex_lock(&itransfer->lock); if (itransfer->state_flags & USBI_TRANSFER_IN_FLIGHT) { usbi_mutex_unlock(&ctx->flying_transfers_lock); usbi_mutex_unlock(&itransfer->lock); return LIBUSB_ERROR_BUSY; } itransfer->transferred = 0; itransfer->state_flags = 0; itransfer->timeout_flags = 0; r = add_to_flying_list(itransfer); if (r) { usbi_mutex_unlock(&ctx->flying_transfers_lock); usbi_mutex_unlock(&itransfer->lock); return r; } /* * We must release the flying transfers lock here, because with * some backends the submit_transfer method is synchroneous. */ usbi_mutex_unlock(&ctx->flying_transfers_lock); r = usbi_backend.submit_transfer(itransfer); if (r == LIBUSB_SUCCESS) { itransfer->state_flags |= USBI_TRANSFER_IN_FLIGHT; /* keep a reference to this device */ libusb_ref_device(transfer->dev_handle->dev); } usbi_mutex_unlock(&itransfer->lock); if (r != LIBUSB_SUCCESS) remove_from_flying_list(itransfer); return r; } /** \ingroup libusb_asyncio * Asynchronously cancel a previously submitted transfer. * This function returns immediately, but this does not indicate cancellation * is complete. Your callback function will be invoked at some later time * with a transfer status of * \ref libusb_transfer_status::LIBUSB_TRANSFER_CANCELLED * "LIBUSB_TRANSFER_CANCELLED." * * \param transfer the transfer to cancel * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the transfer is not in progress, * already complete, or already cancelled. * \returns a LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_cancel_transfer(struct libusb_transfer *transfer) { struct usbi_transfer *itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); int r; usbi_dbg("transfer %p", transfer ); usbi_mutex_lock(&itransfer->lock); if (!(itransfer->state_flags & USBI_TRANSFER_IN_FLIGHT) || (itransfer->state_flags & USBI_TRANSFER_CANCELLING)) { r = LIBUSB_ERROR_NOT_FOUND; goto out; } r = usbi_backend.cancel_transfer(itransfer); if (r < 0) { if (r != LIBUSB_ERROR_NOT_FOUND && r != LIBUSB_ERROR_NO_DEVICE) usbi_err(TRANSFER_CTX(transfer), "cancel transfer failed error %d", r); else usbi_dbg("cancel transfer failed error %d", r); if (r == LIBUSB_ERROR_NO_DEVICE) itransfer->state_flags |= USBI_TRANSFER_DEVICE_DISAPPEARED; } itransfer->state_flags |= USBI_TRANSFER_CANCELLING; out: usbi_mutex_unlock(&itransfer->lock); return r; } /** \ingroup libusb_asyncio * Set a transfers bulk stream id. Note users are advised to use * libusb_fill_bulk_stream_transfer() instead of calling this function * directly. * * Since version 1.0.19, \ref LIBUSB_API_VERSION >= 0x01000103 * * \param transfer the transfer to set the stream id for * \param stream_id the stream id to set * \see libusb_alloc_streams() */ void API_EXPORTED libusb_transfer_set_stream_id( struct libusb_transfer *transfer, uint32_t stream_id) { struct usbi_transfer *itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); itransfer->stream_id = stream_id; } /** \ingroup libusb_asyncio * Get a transfers bulk stream id. * * Since version 1.0.19, \ref LIBUSB_API_VERSION >= 0x01000103 * * \param transfer the transfer to get the stream id for * \returns the stream id for the transfer */ uint32_t API_EXPORTED libusb_transfer_get_stream_id( struct libusb_transfer *transfer) { struct usbi_transfer *itransfer = LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer); return itransfer->stream_id; } /* Handle completion of a transfer (completion might be an error condition). * This will invoke the user-supplied callback function, which may end up * freeing the transfer. Therefore you cannot use the transfer structure * after calling this function, and you should free all backend-specific * data before calling it. * Do not call this function with the usbi_transfer lock held. User-specified * callback functions may attempt to directly resubmit the transfer, which * will attempt to take the lock. */ int usbi_handle_transfer_completion(struct usbi_transfer *itransfer, enum libusb_transfer_status status) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_device_handle *dev_handle = transfer->dev_handle; uint8_t flags; int r; r = remove_from_flying_list(itransfer); if (r < 0) usbi_err(ITRANSFER_CTX(itransfer), "failed to set timer for next timeout, errno=%d", errno); usbi_mutex_lock(&itransfer->lock); itransfer->state_flags &= ~USBI_TRANSFER_IN_FLIGHT; usbi_mutex_unlock(&itransfer->lock); if (status == LIBUSB_TRANSFER_COMPLETED && transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) { int rqlen = transfer->length; if (transfer->type == LIBUSB_TRANSFER_TYPE_CONTROL) rqlen -= LIBUSB_CONTROL_SETUP_SIZE; if (rqlen != itransfer->transferred) { usbi_dbg("interpreting short transfer as error"); status = LIBUSB_TRANSFER_ERROR; } } flags = transfer->flags; transfer->status = status; transfer->actual_length = itransfer->transferred; usbi_dbg("transfer %p has callback %p", transfer, transfer->callback); if (transfer->callback) transfer->callback(transfer); /* transfer might have been freed by the above call, do not use from * this point. */ if (flags & LIBUSB_TRANSFER_FREE_TRANSFER) libusb_free_transfer(transfer); libusb_unref_device(dev_handle->dev); return r; } /* Similar to usbi_handle_transfer_completion() but exclusively for transfers * that were asynchronously cancelled. The same concerns w.r.t. freeing of * transfers exist here. * Do not call this function with the usbi_transfer lock held. User-specified * callback functions may attempt to directly resubmit the transfer, which * will attempt to take the lock. */ int usbi_handle_transfer_cancellation(struct usbi_transfer *transfer) { struct libusb_context *ctx = ITRANSFER_CTX(transfer); uint8_t timed_out; usbi_mutex_lock(&ctx->flying_transfers_lock); timed_out = transfer->timeout_flags & USBI_TRANSFER_TIMED_OUT; usbi_mutex_unlock(&ctx->flying_transfers_lock); /* if the URB was cancelled due to timeout, report timeout to the user */ if (timed_out) { usbi_dbg("detected timeout cancellation"); return usbi_handle_transfer_completion(transfer, LIBUSB_TRANSFER_TIMED_OUT); } /* otherwise its a normal async cancel */ return usbi_handle_transfer_completion(transfer, LIBUSB_TRANSFER_CANCELLED); } /* Add a completed transfer to the completed_transfers list of the * context and signal the event. The backend's handle_transfer_completion() * function will be called the next time an event handler runs. */ void usbi_signal_transfer_completion(struct usbi_transfer *transfer) { struct libusb_context *ctx = ITRANSFER_CTX(transfer); int pending_events; usbi_mutex_lock(&ctx->event_data_lock); pending_events = usbi_pending_events(ctx); list_add_tail(&transfer->completed_list, &ctx->completed_transfers); if (!pending_events) usbi_signal_event(ctx); usbi_mutex_unlock(&ctx->event_data_lock); } /** \ingroup libusb_poll * Attempt to acquire the event handling lock. This lock is used to ensure that * only one thread is monitoring libusb event sources at any one time. * * You only need to use this lock if you are developing an application * which calls poll() or select() on libusb's file descriptors directly. * If you stick to libusb's event handling loop functions (e.g. * libusb_handle_events()) then you do not need to be concerned with this * locking. * * While holding this lock, you are trusted to actually be handling events. * If you are no longer handling events, you must call libusb_unlock_events() * as soon as possible. * * \param ctx the context to operate on, or NULL for the default context * \returns 0 if the lock was obtained successfully * \returns 1 if the lock was not obtained (i.e. another thread holds the lock) * \ref libusb_mtasync */ int API_EXPORTED libusb_try_lock_events(libusb_context *ctx) { int r; unsigned int ru; USBI_GET_CONTEXT(ctx); /* is someone else waiting to close a device? if so, don't let this thread * start event handling */ usbi_mutex_lock(&ctx->event_data_lock); ru = ctx->device_close; usbi_mutex_unlock(&ctx->event_data_lock); if (ru) { usbi_dbg("someone else is closing a device"); return 1; } r = usbi_mutex_trylock(&ctx->events_lock); if (r) return 1; ctx->event_handler_active = 1; return 0; } /** \ingroup libusb_poll * Acquire the event handling lock, blocking until successful acquisition if * it is contended. This lock is used to ensure that only one thread is * monitoring libusb event sources at any one time. * * You only need to use this lock if you are developing an application * which calls poll() or select() on libusb's file descriptors directly. * If you stick to libusb's event handling loop functions (e.g. * libusb_handle_events()) then you do not need to be concerned with this * locking. * * While holding this lock, you are trusted to actually be handling events. * If you are no longer handling events, you must call libusb_unlock_events() * as soon as possible. * * \param ctx the context to operate on, or NULL for the default context * \ref libusb_mtasync */ void API_EXPORTED libusb_lock_events(libusb_context *ctx) { USBI_GET_CONTEXT(ctx); usbi_mutex_lock(&ctx->events_lock); ctx->event_handler_active = 1; } /** \ingroup libusb_poll * Release the lock previously acquired with libusb_try_lock_events() or * libusb_lock_events(). Releasing this lock will wake up any threads blocked * on libusb_wait_for_event(). * * \param ctx the context to operate on, or NULL for the default context * \ref libusb_mtasync */ void API_EXPORTED libusb_unlock_events(libusb_context *ctx) { USBI_GET_CONTEXT(ctx); ctx->event_handler_active = 0; usbi_mutex_unlock(&ctx->events_lock); /* FIXME: perhaps we should be a bit more efficient by not broadcasting * the availability of the events lock when we are modifying pollfds * (check ctx->device_close)? */ usbi_mutex_lock(&ctx->event_waiters_lock); usbi_cond_broadcast(&ctx->event_waiters_cond); usbi_mutex_unlock(&ctx->event_waiters_lock); } /** \ingroup libusb_poll * Determine if it is still OK for this thread to be doing event handling. * * Sometimes, libusb needs to temporarily pause all event handlers, and this * is the function you should use before polling file descriptors to see if * this is the case. * * If this function instructs your thread to give up the events lock, you * should just continue the usual logic that is documented in \ref libusb_mtasync. * On the next iteration, your thread will fail to obtain the events lock, * and will hence become an event waiter. * * This function should be called while the events lock is held: you don't * need to worry about the results of this function if your thread is not * the current event handler. * * \param ctx the context to operate on, or NULL for the default context * \returns 1 if event handling can start or continue * \returns 0 if this thread must give up the events lock * \ref fullstory "Multi-threaded I/O: the full story" */ int API_EXPORTED libusb_event_handling_ok(libusb_context *ctx) { unsigned int r; USBI_GET_CONTEXT(ctx); /* is someone else waiting to close a device? if so, don't let this thread * continue event handling */ usbi_mutex_lock(&ctx->event_data_lock); r = ctx->device_close; usbi_mutex_unlock(&ctx->event_data_lock); if (r) { usbi_dbg("someone else is closing a device"); return 0; } return 1; } /** \ingroup libusb_poll * Determine if an active thread is handling events (i.e. if anyone is holding * the event handling lock). * * \param ctx the context to operate on, or NULL for the default context * \returns 1 if a thread is handling events * \returns 0 if there are no threads currently handling events * \ref libusb_mtasync */ int API_EXPORTED libusb_event_handler_active(libusb_context *ctx) { unsigned int r; USBI_GET_CONTEXT(ctx); /* is someone else waiting to close a device? if so, don't let this thread * start event handling -- indicate that event handling is happening */ usbi_mutex_lock(&ctx->event_data_lock); r = ctx->device_close; usbi_mutex_unlock(&ctx->event_data_lock); if (r) { usbi_dbg("someone else is closing a device"); return 1; } return ctx->event_handler_active; } /** \ingroup libusb_poll * Interrupt any active thread that is handling events. This is mainly useful * for interrupting a dedicated event handling thread when an application * wishes to call libusb_exit(). * * Since version 1.0.21, \ref LIBUSB_API_VERSION >= 0x01000105 * * \param ctx the context to operate on, or NULL for the default context * \ref libusb_mtasync */ void API_EXPORTED libusb_interrupt_event_handler(libusb_context *ctx) { int pending_events; USBI_GET_CONTEXT(ctx); usbi_dbg(""); usbi_mutex_lock(&ctx->event_data_lock); pending_events = usbi_pending_events(ctx); ctx->event_flags |= USBI_EVENT_USER_INTERRUPT; if (!pending_events) usbi_signal_event(ctx); usbi_mutex_unlock(&ctx->event_data_lock); } /** \ingroup libusb_poll * Acquire the event waiters lock. This lock is designed to be obtained under * the situation where you want to be aware when events are completed, but * some other thread is event handling so calling libusb_handle_events() is not * allowed. * * You then obtain this lock, re-check that another thread is still handling * events, then call libusb_wait_for_event(). * * You only need to use this lock if you are developing an application * which calls poll() or select() on libusb's file descriptors directly, * and may potentially be handling events from 2 threads simultaenously. * If you stick to libusb's event handling loop functions (e.g. * libusb_handle_events()) then you do not need to be concerned with this * locking. * * \param ctx the context to operate on, or NULL for the default context * \ref libusb_mtasync */ void API_EXPORTED libusb_lock_event_waiters(libusb_context *ctx) { USBI_GET_CONTEXT(ctx); usbi_mutex_lock(&ctx->event_waiters_lock); } /** \ingroup libusb_poll * Release the event waiters lock. * \param ctx the context to operate on, or NULL for the default context * \ref libusb_mtasync */ void API_EXPORTED libusb_unlock_event_waiters(libusb_context *ctx) { USBI_GET_CONTEXT(ctx); usbi_mutex_unlock(&ctx->event_waiters_lock); } /** \ingroup libusb_poll * Wait for another thread to signal completion of an event. Must be called * with the event waiters lock held, see libusb_lock_event_waiters(). * * This function will block until any of the following conditions are met: * -# The timeout expires * -# A transfer completes * -# A thread releases the event handling lock through libusb_unlock_events() * * Condition 1 is obvious. Condition 2 unblocks your thread after * the callback for the transfer has completed. Condition 3 is important * because it means that the thread that was previously handling events is no * longer doing so, so if any events are to complete, another thread needs to * step up and start event handling. * * This function releases the event waiters lock before putting your thread * to sleep, and reacquires the lock as it is being woken up. * * \param ctx the context to operate on, or NULL for the default context * \param tv maximum timeout for this blocking function. A NULL value * indicates unlimited timeout. * \returns 0 after a transfer completes or another thread stops event handling * \returns 1 if the timeout expired * \ref libusb_mtasync */ int API_EXPORTED libusb_wait_for_event(libusb_context *ctx, struct timeval *tv) { int r; USBI_GET_CONTEXT(ctx); if (tv == NULL) { usbi_cond_wait(&ctx->event_waiters_cond, &ctx->event_waiters_lock); return 0; } r = usbi_cond_timedwait(&ctx->event_waiters_cond, &ctx->event_waiters_lock, tv); if (r < 0) return r; else return (r == ETIMEDOUT); } static void handle_timeout(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); int r; itransfer->timeout_flags |= USBI_TRANSFER_TIMEOUT_HANDLED; r = libusb_cancel_transfer(transfer); if (r == LIBUSB_SUCCESS) itransfer->timeout_flags |= USBI_TRANSFER_TIMED_OUT; else usbi_warn(TRANSFER_CTX(transfer), "async cancel failed %d errno=%d", r, errno); } static int handle_timeouts_locked(struct libusb_context *ctx) { int r; struct timespec systime_ts; struct timeval systime; struct usbi_transfer *transfer; if (list_empty(&ctx->flying_transfers)) return 0; /* get current time */ r = usbi_backend.clock_gettime(USBI_CLOCK_MONOTONIC, &systime_ts); if (r < 0) return r; TIMESPEC_TO_TIMEVAL(&systime, &systime_ts); /* iterate through flying transfers list, finding all transfers that * have expired timeouts */ list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { struct timeval *cur_tv = &transfer->timeout; /* if we've reached transfers of infinite timeout, we're all done */ if (!timerisset(cur_tv)) return 0; /* ignore timeouts we've already handled */ if (transfer->timeout_flags & (USBI_TRANSFER_TIMEOUT_HANDLED | USBI_TRANSFER_OS_HANDLES_TIMEOUT)) continue; /* if transfer has non-expired timeout, nothing more to do */ if ((cur_tv->tv_sec > systime.tv_sec) || (cur_tv->tv_sec == systime.tv_sec && cur_tv->tv_usec > systime.tv_usec)) return 0; /* otherwise, we've got an expired timeout to handle */ handle_timeout(transfer); } return 0; } static int handle_timeouts(struct libusb_context *ctx) { int r; USBI_GET_CONTEXT(ctx); usbi_mutex_lock(&ctx->flying_transfers_lock); r = handle_timeouts_locked(ctx); usbi_mutex_unlock(&ctx->flying_transfers_lock); return r; } #ifdef USBI_TIMERFD_AVAILABLE static int handle_timerfd_trigger(struct libusb_context *ctx) { int r; usbi_mutex_lock(&ctx->flying_transfers_lock); /* process the timeout that just happened */ r = handle_timeouts_locked(ctx); if (r < 0) goto out; /* arm for next timeout*/ r = arm_timerfd_for_next_timeout(ctx); out: usbi_mutex_unlock(&ctx->flying_transfers_lock); return r; } #endif /* do the actual event handling. assumes that no other thread is concurrently * doing the same thing. */ static int handle_events(struct libusb_context *ctx, struct timeval *tv) { int r; struct usbi_pollfd *ipollfd; POLL_NFDS_TYPE nfds = 0; POLL_NFDS_TYPE internal_nfds; struct pollfd *fds = NULL; int i = -1; int timeout_ms; /* prevent attempts to recursively handle events (e.g. calling into * libusb_handle_events() from within a hotplug or transfer callback) */ if (usbi_handling_events(ctx)) return LIBUSB_ERROR_BUSY; usbi_start_event_handling(ctx); /* there are certain fds that libusb uses internally, currently: * * 1) event pipe * 2) timerfd * * the backend will never need to attempt to handle events on these fds, so * we determine how many fds are in use internally for this context and when * handle_events() is called in the backend, the pollfd list and count will * be adjusted to skip over these internal fds */ if (usbi_using_timerfd(ctx)) internal_nfds = 2; else internal_nfds = 1; /* only reallocate the poll fds when the list of poll fds has been modified * since the last poll, otherwise reuse them to save the additional overhead */ usbi_mutex_lock(&ctx->event_data_lock); if (ctx->event_flags & USBI_EVENT_POLLFDS_MODIFIED) { usbi_dbg("poll fds modified, reallocating"); if (ctx->pollfds) { free(ctx->pollfds); ctx->pollfds = NULL; } /* sanity check - it is invalid for a context to have fewer than the * required internal fds (memory corruption?) */ assert(ctx->pollfds_cnt >= internal_nfds); ctx->pollfds = calloc(ctx->pollfds_cnt, sizeof(*ctx->pollfds)); if (!ctx->pollfds) { usbi_mutex_unlock(&ctx->event_data_lock); r = LIBUSB_ERROR_NO_MEM; goto done; } list_for_each_entry(ipollfd, &ctx->ipollfds, list, struct usbi_pollfd) { struct libusb_pollfd *pollfd = &ipollfd->pollfd; i++; ctx->pollfds[i].fd = pollfd->fd; ctx->pollfds[i].events = pollfd->events; } /* reset the flag now that we have the updated list */ ctx->event_flags &= ~USBI_EVENT_POLLFDS_MODIFIED; /* if no further pending events, clear the event pipe so that we do * not immediately return from poll */ if (!usbi_pending_events(ctx)) usbi_clear_event(ctx); } fds = ctx->pollfds; nfds = ctx->pollfds_cnt; usbi_mutex_unlock(&ctx->event_data_lock); timeout_ms = (int)(tv->tv_sec * 1000) + (tv->tv_usec / 1000); /* round up to next millisecond */ if (tv->tv_usec % 1000) timeout_ms++; usbi_dbg("poll() %d fds with timeout in %dms", nfds, timeout_ms); r = usbi_poll(fds, nfds, timeout_ms); usbi_dbg("poll() returned %d", r); if (r == 0) { r = handle_timeouts(ctx); goto done; } else if (r == -1 && errno == EINTR) { r = LIBUSB_ERROR_INTERRUPTED; goto done; } else if (r < 0) { usbi_err(ctx, "poll failed %d err=%d", r, errno); r = LIBUSB_ERROR_IO; goto done; } /* fds[0] is always the event pipe */ if (fds[0].revents) { struct list_head hotplug_msgs; struct usbi_transfer *itransfer; int hotplug_cb_deregistered = 0; int ret = 0; list_init(&hotplug_msgs); usbi_dbg("caught a fish on the event pipe"); /* take the the event data lock while processing events */ usbi_mutex_lock(&ctx->event_data_lock); /* check if someone added a new poll fd */ if (ctx->event_flags & USBI_EVENT_POLLFDS_MODIFIED) usbi_dbg("someone updated the poll fds"); if (ctx->event_flags & USBI_EVENT_USER_INTERRUPT) { usbi_dbg("someone purposely interrupted"); ctx->event_flags &= ~USBI_EVENT_USER_INTERRUPT; } if (ctx->event_flags & USBI_EVENT_HOTPLUG_CB_DEREGISTERED) { usbi_dbg("someone unregistered a hotplug cb"); ctx->event_flags &= ~USBI_EVENT_HOTPLUG_CB_DEREGISTERED; hotplug_cb_deregistered = 1; } /* check if someone is closing a device */ if (ctx->device_close) usbi_dbg("someone is closing a device"); /* check for any pending hotplug messages */ if (!list_empty(&ctx->hotplug_msgs)) { usbi_dbg("hotplug message received"); list_cut(&hotplug_msgs, &ctx->hotplug_msgs); } /* complete any pending transfers */ while (ret == 0 && !list_empty(&ctx->completed_transfers)) { itransfer = list_first_entry(&ctx->completed_transfers, struct usbi_transfer, completed_list); list_del(&itransfer->completed_list); usbi_mutex_unlock(&ctx->event_data_lock); ret = usbi_backend.handle_transfer_completion(itransfer); if (ret) usbi_err(ctx, "backend handle_transfer_completion failed with error %d", ret); usbi_mutex_lock(&ctx->event_data_lock); } /* if no further pending events, clear the event pipe */ if (!usbi_pending_events(ctx)) usbi_clear_event(ctx); usbi_mutex_unlock(&ctx->event_data_lock); if (hotplug_cb_deregistered) usbi_hotplug_deregister(ctx, 0); /* process the hotplug messages, if any */ while (!list_empty(&hotplug_msgs)) { struct libusb_hotplug_message *message = list_first_entry(&hotplug_msgs, struct libusb_hotplug_message, list); usbi_hotplug_match(ctx, message->device, message->event); /* the device left, dereference the device */ if (LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT == message->event) libusb_unref_device(message->device); list_del(&message->list); free(message); } if (ret) { /* return error code */ r = ret; goto done; } if (0 == --r) goto done; } #ifdef USBI_TIMERFD_AVAILABLE /* on timerfd configurations, fds[1] is the timerfd */ if (usbi_using_timerfd(ctx) && fds[1].revents) { /* timerfd indicates that a timeout has expired */ int ret; usbi_dbg("timerfd triggered"); ret = handle_timerfd_trigger(ctx); if (ret < 0) { /* return error code */ r = ret; goto done; } if (0 == --r) goto done; } #endif r = usbi_backend.handle_events(ctx, fds + internal_nfds, nfds - internal_nfds, r); if (r) usbi_err(ctx, "backend handle_events failed with error %d", r); done: usbi_end_event_handling(ctx); return r; } /* returns the smallest of: * 1. timeout of next URB * 2. user-supplied timeout * returns 1 if there is an already-expired timeout, otherwise returns 0 * and populates out */ static int get_next_timeout(libusb_context *ctx, struct timeval *tv, struct timeval *out) { struct timeval timeout; int r = libusb_get_next_timeout(ctx, &timeout); if (r) { /* timeout already expired? */ if (!timerisset(&timeout)) return 1; /* choose the smallest of next URB timeout or user specified timeout */ if (timercmp(&timeout, tv, <)) *out = timeout; else *out = *tv; } else { *out = *tv; } return 0; } /** \ingroup libusb_poll * Handle any pending events. * * libusb determines "pending events" by checking if any timeouts have expired * and by checking the set of file descriptors for activity. * * If a zero timeval is passed, this function will handle any already-pending * events and then immediately return in non-blocking style. * * If a non-zero timeval is passed and no events are currently pending, this * function will block waiting for events to handle up until the specified * timeout. If an event arrives or a signal is raised, this function will * return early. * * If the parameter completed is not NULL then after obtaining the event * handling lock this function will return immediately if the integer * pointed to is not 0. This allows for race free waiting for the completion * of a specific transfer. * * \param ctx the context to operate on, or NULL for the default context * \param tv the maximum time to block waiting for events, or an all zero * timeval struct for non-blocking mode * \param completed pointer to completion integer to check, or NULL * \returns 0 on success, or a LIBUSB_ERROR code on failure * \ref libusb_mtasync */ int API_EXPORTED libusb_handle_events_timeout_completed(libusb_context *ctx, struct timeval *tv, int *completed) { int r; struct timeval poll_timeout; USBI_GET_CONTEXT(ctx); r = get_next_timeout(ctx, tv, &poll_timeout); if (r) { /* timeout already expired */ return handle_timeouts(ctx); } retry: if (libusb_try_lock_events(ctx) == 0) { if (completed == NULL || !*completed) { /* we obtained the event lock: do our own event handling */ usbi_dbg("doing our own event handling"); r = handle_events(ctx, &poll_timeout); } libusb_unlock_events(ctx); return r; } /* another thread is doing event handling. wait for thread events that * notify event completion. */ libusb_lock_event_waiters(ctx); if (completed && *completed) goto already_done; if (!libusb_event_handler_active(ctx)) { /* we hit a race: whoever was event handling earlier finished in the * time it took us to reach this point. try the cycle again. */ libusb_unlock_event_waiters(ctx); usbi_dbg("event handler was active but went away, retrying"); goto retry; } usbi_dbg("another thread is doing event handling"); r = libusb_wait_for_event(ctx, &poll_timeout); already_done: libusb_unlock_event_waiters(ctx); if (r < 0) return r; else if (r == 1) return handle_timeouts(ctx); else return 0; } /** \ingroup libusb_poll * Handle any pending events * * Like libusb_handle_events_timeout_completed(), but without the completed * parameter, calling this function is equivalent to calling * libusb_handle_events_timeout_completed() with a NULL completed parameter. * * This function is kept primarily for backwards compatibility. * All new code should call libusb_handle_events_completed() or * libusb_handle_events_timeout_completed() to avoid race conditions. * * \param ctx the context to operate on, or NULL for the default context * \param tv the maximum time to block waiting for events, or an all zero * timeval struct for non-blocking mode * \returns 0 on success, or a LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_handle_events_timeout(libusb_context *ctx, struct timeval *tv) { return libusb_handle_events_timeout_completed(ctx, tv, NULL); } /** \ingroup libusb_poll * Handle any pending events in blocking mode. There is currently a timeout * hardcoded at 60 seconds but we plan to make it unlimited in future. For * finer control over whether this function is blocking or non-blocking, or * for control over the timeout, use libusb_handle_events_timeout_completed() * instead. * * This function is kept primarily for backwards compatibility. * All new code should call libusb_handle_events_completed() or * libusb_handle_events_timeout_completed() to avoid race conditions. * * \param ctx the context to operate on, or NULL for the default context * \returns 0 on success, or a LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_handle_events(libusb_context *ctx) { struct timeval tv; tv.tv_sec = 60; tv.tv_usec = 0; return libusb_handle_events_timeout_completed(ctx, &tv, NULL); } /** \ingroup libusb_poll * Handle any pending events in blocking mode. * * Like libusb_handle_events(), with the addition of a completed parameter * to allow for race free waiting for the completion of a specific transfer. * * See libusb_handle_events_timeout_completed() for details on the completed * parameter. * * \param ctx the context to operate on, or NULL for the default context * \param completed pointer to completion integer to check, or NULL * \returns 0 on success, or a LIBUSB_ERROR code on failure * \ref libusb_mtasync */ int API_EXPORTED libusb_handle_events_completed(libusb_context *ctx, int *completed) { struct timeval tv; tv.tv_sec = 60; tv.tv_usec = 0; return libusb_handle_events_timeout_completed(ctx, &tv, completed); } /** \ingroup libusb_poll * Handle any pending events by polling file descriptors, without checking if * any other threads are already doing so. Must be called with the event lock * held, see libusb_lock_events(). * * This function is designed to be called under the situation where you have * taken the event lock and are calling poll()/select() directly on libusb's * file descriptors (as opposed to using libusb_handle_events() or similar). * You detect events on libusb's descriptors, so you then call this function * with a zero timeout value (while still holding the event lock). * * \param ctx the context to operate on, or NULL for the default context * \param tv the maximum time to block waiting for events, or zero for * non-blocking mode * \returns 0 on success, or a LIBUSB_ERROR code on failure * \ref libusb_mtasync */ int API_EXPORTED libusb_handle_events_locked(libusb_context *ctx, struct timeval *tv) { int r; struct timeval poll_timeout; USBI_GET_CONTEXT(ctx); r = get_next_timeout(ctx, tv, &poll_timeout); if (r) { /* timeout already expired */ return handle_timeouts(ctx); } return handle_events(ctx, &poll_timeout); } /** \ingroup libusb_poll * Determines whether your application must apply special timing considerations * when monitoring libusb's file descriptors. * * This function is only useful for applications which retrieve and poll * libusb's file descriptors in their own main loop (\ref libusb_pollmain). * * Ordinarily, libusb's event handler needs to be called into at specific * moments in time (in addition to times when there is activity on the file * descriptor set). The usual approach is to use libusb_get_next_timeout() * to learn about when the next timeout occurs, and to adjust your * poll()/select() timeout accordingly so that you can make a call into the * library at that time. * * Some platforms supported by libusb do not come with this baggage - any * events relevant to timing will be represented by activity on the file * descriptor set, and libusb_get_next_timeout() will always return 0. * This function allows you to detect whether you are running on such a * platform. * * Since v1.0.5. * * \param ctx the context to operate on, or NULL for the default context * \returns 0 if you must call into libusb at times determined by * libusb_get_next_timeout(), or 1 if all timeout events are handled internally * or through regular activity on the file descriptors. * \ref libusb_pollmain "Polling libusb file descriptors for event handling" */ int API_EXPORTED libusb_pollfds_handle_timeouts(libusb_context *ctx) { #if defined(USBI_TIMERFD_AVAILABLE) USBI_GET_CONTEXT(ctx); return usbi_using_timerfd(ctx); #else UNUSED(ctx); return 0; #endif } /** \ingroup libusb_poll * Determine the next internal timeout that libusb needs to handle. You only * need to use this function if you are calling poll() or select() or similar * on libusb's file descriptors yourself - you do not need to use it if you * are calling libusb_handle_events() or a variant directly. * * You should call this function in your main loop in order to determine how * long to wait for select() or poll() to return results. libusb needs to be * called into at this timeout, so you should use it as an upper bound on * your select() or poll() call. * * When the timeout has expired, call into libusb_handle_events_timeout() * (perhaps in non-blocking mode) so that libusb can handle the timeout. * * This function may return 1 (success) and an all-zero timeval. If this is * the case, it indicates that libusb has a timeout that has already expired * so you should call libusb_handle_events_timeout() or similar immediately. * A return code of 0 indicates that there are no pending timeouts. * * On some platforms, this function will always returns 0 (no pending * timeouts). See \ref polltime. * * \param ctx the context to operate on, or NULL for the default context * \param tv output location for a relative time against the current * clock in which libusb must be called into in order to process timeout events * \returns 0 if there are no pending timeouts, 1 if a timeout was returned, * or LIBUSB_ERROR_OTHER on failure */ int API_EXPORTED libusb_get_next_timeout(libusb_context *ctx, struct timeval *tv) { struct usbi_transfer *transfer; struct timespec cur_ts; struct timeval cur_tv; struct timeval next_timeout = { 0, 0 }; int r; USBI_GET_CONTEXT(ctx); if (usbi_using_timerfd(ctx)) return 0; usbi_mutex_lock(&ctx->flying_transfers_lock); if (list_empty(&ctx->flying_transfers)) { usbi_mutex_unlock(&ctx->flying_transfers_lock); usbi_dbg("no URBs, no timeout!"); return 0; } /* find next transfer which hasn't already been processed as timed out */ list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { if (transfer->timeout_flags & (USBI_TRANSFER_TIMEOUT_HANDLED | USBI_TRANSFER_OS_HANDLES_TIMEOUT)) continue; /* if we've reached transfers of infinte timeout, we're done looking */ if (!timerisset(&transfer->timeout)) break; next_timeout = transfer->timeout; break; } usbi_mutex_unlock(&ctx->flying_transfers_lock); if (!timerisset(&next_timeout)) { usbi_dbg("no URB with timeout or all handled by OS; no timeout!"); return 0; } r = usbi_backend.clock_gettime(USBI_CLOCK_MONOTONIC, &cur_ts); if (r < 0) { usbi_err(ctx, "failed to read monotonic clock, errno=%d", errno); return 0; } TIMESPEC_TO_TIMEVAL(&cur_tv, &cur_ts); if (!timercmp(&cur_tv, &next_timeout, <)) { usbi_dbg("first timeout already expired"); timerclear(tv); } else { timersub(&next_timeout, &cur_tv, tv); usbi_dbg("next timeout in %d.%06ds", tv->tv_sec, tv->tv_usec); } return 1; } /** \ingroup libusb_poll * Register notification functions for file descriptor additions/removals. * These functions will be invoked for every new or removed file descriptor * that libusb uses as an event source. * * To remove notifiers, pass NULL values for the function pointers. * * Note that file descriptors may have been added even before you register * these notifiers (e.g. at libusb_init() time). * * Additionally, note that the removal notifier may be called during * libusb_exit() (e.g. when it is closing file descriptors that were opened * and added to the poll set at libusb_init() time). If you don't want this, * remove the notifiers immediately before calling libusb_exit(). * * \param ctx the context to operate on, or NULL for the default context * \param added_cb pointer to function for addition notifications * \param removed_cb pointer to function for removal notifications * \param user_data User data to be passed back to callbacks (useful for * passing context information) */ void API_EXPORTED libusb_set_pollfd_notifiers(libusb_context *ctx, libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, void *user_data) { USBI_GET_CONTEXT(ctx); ctx->fd_added_cb = added_cb; ctx->fd_removed_cb = removed_cb; ctx->fd_cb_user_data = user_data; } /* * Interrupt the iteration of the event handling thread, so that it picks * up the fd change. Callers of this function must hold the event_data_lock. */ static void usbi_fd_notification(struct libusb_context *ctx) { int pending_events; /* Record that there is a new poll fd. * Only signal an event if there are no prior pending events. */ pending_events = usbi_pending_events(ctx); ctx->event_flags |= USBI_EVENT_POLLFDS_MODIFIED; if (!pending_events) usbi_signal_event(ctx); } /* Add a file descriptor to the list of file descriptors to be monitored. * events should be specified as a bitmask of events passed to poll(), e.g. * POLLIN and/or POLLOUT. */ int usbi_add_pollfd(struct libusb_context *ctx, int fd, short events) { struct usbi_pollfd *ipollfd = malloc(sizeof(*ipollfd)); if (!ipollfd) return LIBUSB_ERROR_NO_MEM; usbi_dbg("add fd %d events %d", fd, events); ipollfd->pollfd.fd = fd; ipollfd->pollfd.events = events; usbi_mutex_lock(&ctx->event_data_lock); list_add_tail(&ipollfd->list, &ctx->ipollfds); ctx->pollfds_cnt++; usbi_fd_notification(ctx); usbi_mutex_unlock(&ctx->event_data_lock); if (ctx->fd_added_cb) ctx->fd_added_cb(fd, events, ctx->fd_cb_user_data); return 0; } /* Remove a file descriptor from the list of file descriptors to be polled. */ void usbi_remove_pollfd(struct libusb_context *ctx, int fd) { struct usbi_pollfd *ipollfd; int found = 0; usbi_dbg("remove fd %d", fd); usbi_mutex_lock(&ctx->event_data_lock); list_for_each_entry(ipollfd, &ctx->ipollfds, list, struct usbi_pollfd) if (ipollfd->pollfd.fd == fd) { found = 1; break; } if (!found) { usbi_dbg("couldn't find fd %d to remove", fd); usbi_mutex_unlock(&ctx->event_data_lock); return; } list_del(&ipollfd->list); ctx->pollfds_cnt--; usbi_fd_notification(ctx); usbi_mutex_unlock(&ctx->event_data_lock); free(ipollfd); if (ctx->fd_removed_cb) ctx->fd_removed_cb(fd, ctx->fd_cb_user_data); } /** \ingroup libusb_poll * Retrieve a list of file descriptors that should be polled by your main loop * as libusb event sources. * * The returned list is NULL-terminated and should be freed with libusb_free_pollfds() * when done. The actual list contents must not be touched. * * As file descriptors are a Unix-specific concept, this function is not * available on Windows and will always return NULL. * * \param ctx the context to operate on, or NULL for the default context * \returns a NULL-terminated list of libusb_pollfd structures * \returns NULL on error * \returns NULL on platforms where the functionality is not available */ DEFAULT_VISIBILITY const struct libusb_pollfd ** LIBUSB_CALL libusb_get_pollfds( libusb_context *ctx) { #ifndef OS_WINDOWS struct libusb_pollfd **ret = NULL; struct usbi_pollfd *ipollfd; size_t i = 0; USBI_GET_CONTEXT(ctx); usbi_mutex_lock(&ctx->event_data_lock); ret = calloc(ctx->pollfds_cnt + 1, sizeof(struct libusb_pollfd *)); if (!ret) goto out; list_for_each_entry(ipollfd, &ctx->ipollfds, list, struct usbi_pollfd) ret[i++] = (struct libusb_pollfd *) ipollfd; ret[ctx->pollfds_cnt] = NULL; out: usbi_mutex_unlock(&ctx->event_data_lock); return (const struct libusb_pollfd **) ret; #else usbi_err(ctx, "external polling of libusb's internal descriptors "\ "is not yet supported on Windows platforms"); return NULL; #endif } /** \ingroup libusb_poll * Free a list of libusb_pollfd structures. This should be called for all * pollfd lists allocated with libusb_get_pollfds(). * * Since version 1.0.20, \ref LIBUSB_API_VERSION >= 0x01000104 * * It is legal to call this function with a NULL pollfd list. In this case, * the function will simply return safely. * * \param pollfds the list of libusb_pollfd structures to free */ void API_EXPORTED libusb_free_pollfds(const struct libusb_pollfd **pollfds) { if (!pollfds) return; free((void *)pollfds); } /* Backends may call this from handle_events to report disconnection of a * device. This function ensures transfers get cancelled appropriately. * Callers of this function must hold the events_lock. */ void usbi_handle_disconnect(struct libusb_device_handle *dev_handle) { struct usbi_transfer *cur; struct usbi_transfer *to_cancel; usbi_dbg("device %d.%d", dev_handle->dev->bus_number, dev_handle->dev->device_address); /* terminate all pending transfers with the LIBUSB_TRANSFER_NO_DEVICE * status code. * * when we find a transfer for this device on the list, there are two * possible scenarios: * 1. the transfer is currently in-flight, in which case we terminate the * transfer here * 2. the transfer has been added to the flying transfer list by * libusb_submit_transfer, has failed to submit and * libusb_submit_transfer is waiting for us to release the * flying_transfers_lock to remove it, so we ignore it */ while (1) { to_cancel = NULL; usbi_mutex_lock(&HANDLE_CTX(dev_handle)->flying_transfers_lock); list_for_each_entry(cur, &HANDLE_CTX(dev_handle)->flying_transfers, list, struct usbi_transfer) if (USBI_TRANSFER_TO_LIBUSB_TRANSFER(cur)->dev_handle == dev_handle) { usbi_mutex_lock(&cur->lock); if (cur->state_flags & USBI_TRANSFER_IN_FLIGHT) to_cancel = cur; usbi_mutex_unlock(&cur->lock); if (to_cancel) break; } usbi_mutex_unlock(&HANDLE_CTX(dev_handle)->flying_transfers_lock); if (!to_cancel) break; usbi_dbg("cancelling transfer %p from disconnect", USBI_TRANSFER_TO_LIBUSB_TRANSFER(to_cancel)); usbi_mutex_lock(&to_cancel->lock); usbi_backend.clear_transfer_priv(to_cancel); usbi_mutex_unlock(&to_cancel->lock); usbi_handle_transfer_completion(to_cancel, LIBUSB_TRANSFER_NO_DEVICE); } } release/libusb/libusb/libusb-1.0.def0000664000000000000000000001657214261476161016215 0ustar rootrootLIBRARY "libusb-1.0.dll" EXPORTS libusb_alloc_streams libusb_alloc_streams@16 = libusb_alloc_streams libusb_alloc_transfer libusb_alloc_transfer@4 = libusb_alloc_transfer libusb_attach_kernel_driver libusb_attach_kernel_driver@8 = libusb_attach_kernel_driver libusb_bulk_transfer libusb_bulk_transfer@24 = libusb_bulk_transfer libusb_cancel_transfer libusb_cancel_transfer@4 = libusb_cancel_transfer libusb_claim_interface libusb_claim_interface@8 = libusb_claim_interface libusb_clear_halt libusb_clear_halt@8 = libusb_clear_halt libusb_close libusb_close@4 = libusb_close libusb_control_transfer libusb_control_transfer@32 = libusb_control_transfer libusb_detach_kernel_driver libusb_detach_kernel_driver@8 = libusb_detach_kernel_driver libusb_dev_mem_alloc libusb_dev_mem_alloc@8 = libusb_dev_mem_alloc libusb_dev_mem_free libusb_dev_mem_free@12 = libusb_dev_mem_free libusb_error_name libusb_error_name@4 = libusb_error_name libusb_event_handler_active libusb_event_handler_active@4 = libusb_event_handler_active libusb_event_handling_ok libusb_event_handling_ok@4 = libusb_event_handling_ok libusb_exit libusb_exit@4 = libusb_exit libusb_free_bos_descriptor libusb_free_bos_descriptor@4 = libusb_free_bos_descriptor libusb_free_config_descriptor libusb_free_config_descriptor@4 = libusb_free_config_descriptor libusb_free_container_id_descriptor libusb_free_container_id_descriptor@4 = libusb_free_container_id_descriptor libusb_free_device_list libusb_free_device_list@8 = libusb_free_device_list libusb_free_pollfds libusb_free_pollfds@4 = libusb_free_pollfds libusb_free_ss_endpoint_companion_descriptor libusb_free_ss_endpoint_companion_descriptor@4 = libusb_free_ss_endpoint_companion_descriptor libusb_free_ss_usb_device_capability_descriptor libusb_free_ss_usb_device_capability_descriptor@4 = libusb_free_ss_usb_device_capability_descriptor libusb_free_streams libusb_free_streams@12 = libusb_free_streams libusb_free_transfer libusb_free_transfer@4 = libusb_free_transfer libusb_free_usb_2_0_extension_descriptor libusb_free_usb_2_0_extension_descriptor@4 = libusb_free_usb_2_0_extension_descriptor libusb_get_active_config_descriptor libusb_get_active_config_descriptor@8 = libusb_get_active_config_descriptor libusb_get_bos_descriptor libusb_get_bos_descriptor@8 = libusb_get_bos_descriptor libusb_get_bus_number libusb_get_bus_number@4 = libusb_get_bus_number libusb_get_config_descriptor libusb_get_config_descriptor@12 = libusb_get_config_descriptor libusb_get_config_descriptor_by_value libusb_get_config_descriptor_by_value@12 = libusb_get_config_descriptor_by_value libusb_get_configuration libusb_get_configuration@8 = libusb_get_configuration libusb_get_container_id_descriptor libusb_get_container_id_descriptor@12 = libusb_get_container_id_descriptor libusb_get_device libusb_get_device@4 = libusb_get_device libusb_get_device_address libusb_get_device_address@4 = libusb_get_device_address libusb_get_device_descriptor libusb_get_device_descriptor@8 = libusb_get_device_descriptor libusb_get_device_list libusb_get_device_list@8 = libusb_get_device_list libusb_get_device_speed libusb_get_device_speed@4 = libusb_get_device_speed libusb_get_max_iso_packet_size libusb_get_max_iso_packet_size@8 = libusb_get_max_iso_packet_size libusb_get_max_packet_size libusb_get_max_packet_size@8 = libusb_get_max_packet_size libusb_get_next_timeout libusb_get_next_timeout@8 = libusb_get_next_timeout libusb_get_parent libusb_get_parent@4 = libusb_get_parent libusb_get_pollfds libusb_get_pollfds@4 = libusb_get_pollfds libusb_get_port_number libusb_get_port_number@4 = libusb_get_port_number libusb_get_port_numbers libusb_get_port_numbers@12 = libusb_get_port_numbers libusb_get_port_path libusb_get_port_path@16 = libusb_get_port_path libusb_get_ss_endpoint_companion_descriptor libusb_get_ss_endpoint_companion_descriptor@12 = libusb_get_ss_endpoint_companion_descriptor libusb_get_ss_usb_device_capability_descriptor libusb_get_ss_usb_device_capability_descriptor@12 = libusb_get_ss_usb_device_capability_descriptor libusb_get_string_descriptor_ascii libusb_get_string_descriptor_ascii@16 = libusb_get_string_descriptor_ascii libusb_get_usb_2_0_extension_descriptor libusb_get_usb_2_0_extension_descriptor@12 = libusb_get_usb_2_0_extension_descriptor libusb_get_version libusb_get_version@0 = libusb_get_version libusb_handle_events libusb_handle_events@4 = libusb_handle_events libusb_handle_events_completed libusb_handle_events_completed@8 = libusb_handle_events_completed libusb_handle_events_locked libusb_handle_events_locked@8 = libusb_handle_events_locked libusb_handle_events_timeout libusb_handle_events_timeout@8 = libusb_handle_events_timeout libusb_handle_events_timeout_completed libusb_handle_events_timeout_completed@12 = libusb_handle_events_timeout_completed libusb_has_capability libusb_has_capability@4 = libusb_has_capability libusb_hotplug_deregister_callback libusb_hotplug_deregister_callback@8 = libusb_hotplug_deregister_callback libusb_hotplug_register_callback libusb_hotplug_register_callback@36 = libusb_hotplug_register_callback libusb_init libusb_init@4 = libusb_init libusb_interrupt_event_handler libusb_interrupt_event_handler@4 = libusb_interrupt_event_handler libusb_interrupt_transfer libusb_interrupt_transfer@24 = libusb_interrupt_transfer libusb_kernel_driver_active libusb_kernel_driver_active@8 = libusb_kernel_driver_active libusb_lock_event_waiters libusb_lock_event_waiters@4 = libusb_lock_event_waiters libusb_lock_events libusb_lock_events@4 = libusb_lock_events libusb_open libusb_open@8 = libusb_open libusb_open_device_with_vid_pid libusb_open_device_with_vid_pid@12 = libusb_open_device_with_vid_pid libusb_pollfds_handle_timeouts libusb_pollfds_handle_timeouts@4 = libusb_pollfds_handle_timeouts libusb_ref_device libusb_ref_device@4 = libusb_ref_device libusb_release_interface libusb_release_interface@8 = libusb_release_interface libusb_reset_device libusb_reset_device@4 = libusb_reset_device libusb_set_auto_detach_kernel_driver libusb_set_auto_detach_kernel_driver@8 = libusb_set_auto_detach_kernel_driver libusb_set_configuration libusb_set_configuration@8 = libusb_set_configuration libusb_set_debug libusb_set_debug@8 = libusb_set_debug libusb_set_interface_alt_setting libusb_set_interface_alt_setting@12 = libusb_set_interface_alt_setting libusb_set_option _libusb_set_option = libusb_set_option libusb_set_pollfd_notifiers libusb_set_pollfd_notifiers@16 = libusb_set_pollfd_notifiers libusb_setlocale libusb_setlocale@4 = libusb_setlocale libusb_strerror libusb_strerror@4 = libusb_strerror libusb_submit_transfer libusb_submit_transfer@4 = libusb_submit_transfer libusb_transfer_get_stream_id libusb_transfer_get_stream_id@4 = libusb_transfer_get_stream_id libusb_transfer_set_stream_id libusb_transfer_set_stream_id@8 = libusb_transfer_set_stream_id libusb_try_lock_events libusb_try_lock_events@4 = libusb_try_lock_events libusb_unlock_event_waiters libusb_unlock_event_waiters@4 = libusb_unlock_event_waiters libusb_unlock_events libusb_unlock_events@4 = libusb_unlock_events libusb_unref_device libusb_unref_device@4 = libusb_unref_device libusb_wait_for_event libusb_wait_for_event@8 = libusb_wait_for_event release/libusb/libusb/hotplug.h0000664000000000000000000000637614261476161015615 0ustar rootroot/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */ /* * Hotplug support for libusb * Copyright © 2012-2013 Nathan Hjelm * Copyright © 2012-2013 Peter Stuge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef USBI_HOTPLUG_H #define USBI_HOTPLUG_H #include "libusbi.h" enum usbi_hotplug_flags { /* This callback is interested in device arrivals */ USBI_HOTPLUG_DEVICE_ARRIVED = LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED, /* This callback is interested in device removals */ USBI_HOTPLUG_DEVICE_LEFT = LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT, /* IMPORTANT: The values for the below entries must start *after* * the highest value of the above entries!!! */ /* The vendor_id field is valid for matching */ USBI_HOTPLUG_VENDOR_ID_VALID = (1 << 3), /* The product_id field is valid for matching */ USBI_HOTPLUG_PRODUCT_ID_VALID = (1 << 4), /* The dev_class field is valid for matching */ USBI_HOTPLUG_DEV_CLASS_VALID = (1 << 5), /* This callback has been unregistered and needs to be freed */ USBI_HOTPLUG_NEEDS_FREE = (1 << 6), }; /** \ingroup hotplug * The hotplug callback structure. The user populates this structure with * libusb_hotplug_prepare_callback() and then calls libusb_hotplug_register_callback() * to receive notification of hotplug events. */ struct libusb_hotplug_callback { /** Flags that control how this callback behaves */ uint8_t flags; /** Vendor ID to match (if flags says this is valid) */ uint16_t vendor_id; /** Product ID to match (if flags says this is valid) */ uint16_t product_id; /** Device class to match (if flags says this is valid) */ uint8_t dev_class; /** Callback function to invoke for matching event/device */ libusb_hotplug_callback_fn cb; /** Handle for this callback (used to match on deregister) */ libusb_hotplug_callback_handle handle; /** User data that will be passed to the callback function */ void *user_data; /** List this callback is registered in (ctx->hotplug_cbs) */ struct list_head list; }; struct libusb_hotplug_message { /** The hotplug event that occurred */ libusb_hotplug_event event; /** The device for which this hotplug event occurred */ struct libusb_device *device; /** List this message is contained in (ctx->hotplug_msgs) */ struct list_head list; }; void usbi_hotplug_deregister(struct libusb_context *ctx, int forced); void usbi_hotplug_match(struct libusb_context *ctx, struct libusb_device *dev, libusb_hotplug_event event); void usbi_hotplug_notification(struct libusb_context *ctx, struct libusb_device *dev, libusb_hotplug_event event); #endif release/libusb/libusb/libusbi.h0000664000000000000000000012126614261476162015561 0ustar rootroot/* * Internal header for libusb * Copyright © 2007-2009 Daniel Drake * Copyright © 2001 Johannes Erdfelt * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBUSBI_H #define LIBUSBI_H #include #include #include #include #include #include #ifdef HAVE_POLL_H #include #endif #ifdef HAVE_MISSING_H #include #endif #include "libusb.h" #include "version.h" /* Attribute to ensure that a structure member is aligned to a natural * pointer alignment. Used for os_priv member. */ #if defined(_MSC_VER) #if defined(_WIN64) #define PTR_ALIGNED __declspec(align(8)) #else #define PTR_ALIGNED __declspec(align(4)) #endif #elif defined(__GNUC__) #define PTR_ALIGNED __attribute__((aligned(sizeof(void *)))) #else #define PTR_ALIGNED #endif /* Inside the libusb code, mark all public functions as follows: * return_type API_EXPORTED function_name(params) { ... } * But if the function returns a pointer, mark it as follows: * DEFAULT_VISIBILITY return_type * LIBUSB_CALL function_name(params) { ... } * In the libusb public header, mark all declarations as: * return_type LIBUSB_CALL function_name(params); */ #define API_EXPORTED LIBUSB_CALL DEFAULT_VISIBILITY #ifdef __cplusplus extern "C" { #endif #define DEVICE_DESC_LENGTH 18 #define USB_MAXENDPOINTS 32 #define USB_MAXINTERFACES 32 #define USB_MAXCONFIG 8 /* Backend specific capabilities */ #define USBI_CAP_HAS_HID_ACCESS 0x00010000 #define USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER 0x00020000 /* Maximum number of bytes in a log line */ #define USBI_MAX_LOG_LEN 1024 /* Terminator for log lines */ #define USBI_LOG_LINE_END "\n" /* The following is used to silence warnings for unused variables */ #define UNUSED(var) do { (void)(var); } while(0) #if !defined(ARRAYSIZE) #define ARRAYSIZE(array) (sizeof(array) / sizeof(array[0])) #endif struct list_head { struct list_head *prev, *next; }; /* Get an entry from the list * ptr - the address of this list_head element in "type" * type - the data type that contains "member" * member - the list_head element in "type" */ #define list_entry(ptr, type, member) \ ((type *)((uintptr_t)(ptr) - (uintptr_t)offsetof(type, member))) #define list_first_entry(ptr, type, member) \ list_entry((ptr)->next, type, member) /* Get each entry from a list * pos - A structure pointer has a "member" element * head - list head * member - the list_head element in "pos" * type - the type of the first parameter */ #define list_for_each_entry(pos, head, member, type) \ for (pos = list_entry((head)->next, type, member); \ &pos->member != (head); \ pos = list_entry(pos->member.next, type, member)) #define list_for_each_entry_safe(pos, n, head, member, type) \ for (pos = list_entry((head)->next, type, member), \ n = list_entry(pos->member.next, type, member); \ &pos->member != (head); \ pos = n, n = list_entry(n->member.next, type, member)) #define list_empty(entry) ((entry)->next == (entry)) static inline void list_init(struct list_head *entry) { entry->prev = entry->next = entry; } static inline void list_add(struct list_head *entry, struct list_head *head) { entry->next = head->next; entry->prev = head; head->next->prev = entry; head->next = entry; } static inline void list_add_tail(struct list_head *entry, struct list_head *head) { entry->next = head; entry->prev = head->prev; head->prev->next = entry; head->prev = entry; } static inline void list_del(struct list_head *entry) { entry->next->prev = entry->prev; entry->prev->next = entry->next; entry->next = entry->prev = NULL; } static inline void list_cut(struct list_head *list, struct list_head *head) { if (list_empty(head)) return; list->next = head->next; list->next->prev = list; list->prev = head->prev; list->prev->next = list; list_init(head); } static inline void *usbi_reallocf(void *ptr, size_t size) { void *ret = realloc(ptr, size); if (!ret) free(ptr); return ret; } #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *mptr = (ptr); \ (type *)( (char *)mptr - offsetof(type,member) );}) #ifndef CLAMP #define CLAMP(val, min, max) ((val) < (min) ? (min) : ((val) > (max) ? (max) : (val))) #endif #ifndef MIN #define MIN(a, b) ((a) < (b) ? (a) : (b)) #endif #ifndef MAX #define MAX(a, b) ((a) > (b) ? (a) : (b)) #endif #define TIMESPEC_IS_SET(ts) ((ts)->tv_sec != 0 || (ts)->tv_nsec != 0) #if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE) #define TIMEVAL_TV_SEC_TYPE long #else #define TIMEVAL_TV_SEC_TYPE time_t #endif /* Some platforms don't have this define */ #ifndef TIMESPEC_TO_TIMEVAL #define TIMESPEC_TO_TIMEVAL(tv, ts) \ do { \ (tv)->tv_sec = (TIMEVAL_TV_SEC_TYPE) (ts)->tv_sec; \ (tv)->tv_usec = (ts)->tv_nsec / 1000; \ } while (0) #endif #ifdef ENABLE_LOGGING #if defined(_MSC_VER) && (_MSC_VER < 1900) #define snprintf usbi_snprintf #define vsnprintf usbi_vsnprintf int usbi_snprintf(char *dst, size_t size, const char *format, ...); int usbi_vsnprintf(char *dst, size_t size, const char *format, va_list ap); #define LIBUSB_PRINTF_WIN32 #endif /* defined(_MSC_VER) && (_MSC_VER < 1900) */ void usbi_log(struct libusb_context *ctx, enum libusb_log_level level, const char *function, const char *format, ...); void usbi_log_v(struct libusb_context *ctx, enum libusb_log_level level, const char *function, const char *format, va_list args); #if !defined(_MSC_VER) || (_MSC_VER >= 1400) #define _usbi_log(ctx, level, ...) usbi_log(ctx, level, __FUNCTION__, __VA_ARGS__) #define usbi_err(ctx, ...) _usbi_log(ctx, LIBUSB_LOG_LEVEL_ERROR, __VA_ARGS__) #define usbi_warn(ctx, ...) _usbi_log(ctx, LIBUSB_LOG_LEVEL_WARNING, __VA_ARGS__) #define usbi_info(ctx, ...) _usbi_log(ctx, LIBUSB_LOG_LEVEL_INFO, __VA_ARGS__) #define usbi_dbg(...) _usbi_log(NULL, LIBUSB_LOG_LEVEL_DEBUG, __VA_ARGS__) #else /* !defined(_MSC_VER) || (_MSC_VER >= 1400) */ #define LOG_BODY(ctxt, level) \ { \ va_list args; \ va_start(args, format); \ usbi_log_v(ctxt, level, "", format, args); \ va_end(args); \ } static inline void usbi_err(struct libusb_context *ctx, const char *format, ...) LOG_BODY(ctx, LIBUSB_LOG_LEVEL_ERROR) static inline void usbi_warn(struct libusb_context *ctx, const char *format, ...) LOG_BODY(ctx, LIBUSB_LOG_LEVEL_WARNING) static inline void usbi_info(struct libusb_context *ctx, const char *format, ...) LOG_BODY(ctx, LIBUSB_LOG_LEVEL_INFO) static inline void usbi_dbg(const char *format, ...) LOG_BODY(NULL, LIBUSB_LOG_LEVEL_DEBUG) #endif /* !defined(_MSC_VER) || (_MSC_VER >= 1400) */ #else /* ENABLE_LOGGING */ #define usbi_err(ctx, ...) do { (void)ctx; } while (0) #define usbi_warn(ctx, ...) do { (void)ctx; } while (0) #define usbi_info(ctx, ...) do { (void)ctx; } while (0) #define usbi_dbg(...) do {} while (0) #endif /* ENABLE_LOGGING */ #define USBI_GET_CONTEXT(ctx) \ do { \ if (!(ctx)) \ (ctx) = usbi_default_context; \ } while(0) #define DEVICE_CTX(dev) ((dev)->ctx) #define HANDLE_CTX(handle) (DEVICE_CTX((handle)->dev)) #define TRANSFER_CTX(transfer) (HANDLE_CTX((transfer)->dev_handle)) #define ITRANSFER_CTX(transfer) \ (TRANSFER_CTX(USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer))) #define IS_EPIN(ep) (0 != ((ep) & LIBUSB_ENDPOINT_IN)) #define IS_EPOUT(ep) (!IS_EPIN(ep)) #define IS_XFERIN(xfer) (0 != ((xfer)->endpoint & LIBUSB_ENDPOINT_IN)) #define IS_XFEROUT(xfer) (!IS_XFERIN(xfer)) /* Internal abstraction for thread synchronization */ #if defined(THREADS_POSIX) #include "os/threads_posix.h" #elif defined(OS_WINDOWS) || defined(OS_WINCE) #include "os/threads_windows.h" #endif extern struct libusb_context *usbi_default_context; /* Forward declaration for use in context (fully defined inside poll abstraction) */ struct pollfd; struct libusb_context { #if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING) enum libusb_log_level debug; int debug_fixed; #endif /* internal event pipe, used for signalling occurrence of an internal event. */ int event_pipe[2]; struct list_head usb_devs; usbi_mutex_t usb_devs_lock; /* A list of open handles. Backends are free to traverse this if required. */ struct list_head open_devs; usbi_mutex_t open_devs_lock; /* A list of registered hotplug callbacks */ struct list_head hotplug_cbs; libusb_hotplug_callback_handle next_hotplug_cb_handle; usbi_mutex_t hotplug_cbs_lock; /* this is a list of in-flight transfer handles, sorted by timeout * expiration. URBs to timeout the soonest are placed at the beginning of * the list, URBs that will time out later are placed after, and urbs with * infinite timeout are always placed at the very end. */ struct list_head flying_transfers; /* Note paths taking both this and usbi_transfer->lock must always * take this lock first */ usbi_mutex_t flying_transfers_lock; /* user callbacks for pollfd changes */ libusb_pollfd_added_cb fd_added_cb; libusb_pollfd_removed_cb fd_removed_cb; void *fd_cb_user_data; /* ensures that only one thread is handling events at any one time */ usbi_mutex_t events_lock; /* used to see if there is an active thread doing event handling */ int event_handler_active; /* A thread-local storage key to track which thread is performing event * handling */ usbi_tls_key_t event_handling_key; /* used to wait for event completion in threads other than the one that is * event handling */ usbi_mutex_t event_waiters_lock; usbi_cond_t event_waiters_cond; /* A lock to protect internal context event data. */ usbi_mutex_t event_data_lock; /* A bitmask of flags that are set to indicate specific events that need to * be handled. Protected by event_data_lock. */ unsigned int event_flags; /* A counter that is set when we want to interrupt and prevent event handling, * in order to safely close a device. Protected by event_data_lock. */ unsigned int device_close; /* list and count of poll fds and an array of poll fd structures that is * (re)allocated as necessary prior to polling. Protected by event_data_lock. */ struct list_head ipollfds; struct pollfd *pollfds; POLL_NFDS_TYPE pollfds_cnt; /* A list of pending hotplug messages. Protected by event_data_lock. */ struct list_head hotplug_msgs; /* A list of pending completed transfers. Protected by event_data_lock. */ struct list_head completed_transfers; #ifdef USBI_TIMERFD_AVAILABLE /* used for timeout handling, if supported by OS. * this timerfd is maintained to trigger on the next pending timeout */ int timerfd; #endif struct list_head list; PTR_ALIGNED unsigned char os_priv[ZERO_SIZED_ARRAY]; }; enum usbi_event_flags { /* The list of pollfds has been modified */ USBI_EVENT_POLLFDS_MODIFIED = 1 << 0, /* The user has interrupted the event handler */ USBI_EVENT_USER_INTERRUPT = 1 << 1, /* A hotplug callback deregistration is pending */ USBI_EVENT_HOTPLUG_CB_DEREGISTERED = 1 << 2, }; /* Macros for managing event handling state */ #define usbi_handling_events(ctx) \ (usbi_tls_key_get((ctx)->event_handling_key) != NULL) #define usbi_start_event_handling(ctx) \ usbi_tls_key_set((ctx)->event_handling_key, ctx) #define usbi_end_event_handling(ctx) \ usbi_tls_key_set((ctx)->event_handling_key, NULL) /* Update the following macro if new event sources are added */ #define usbi_pending_events(ctx) \ ((ctx)->event_flags || (ctx)->device_close \ || !list_empty(&(ctx)->hotplug_msgs) || !list_empty(&(ctx)->completed_transfers)) #ifdef USBI_TIMERFD_AVAILABLE #define usbi_using_timerfd(ctx) ((ctx)->timerfd >= 0) #else #define usbi_using_timerfd(ctx) (0) #endif struct libusb_device { /* lock protects refcnt, everything else is finalized at initialization * time */ usbi_mutex_t lock; int refcnt; struct libusb_context *ctx; uint8_t bus_number; uint8_t port_number; struct libusb_device* parent_dev; uint8_t device_address; uint8_t num_configurations; enum libusb_speed speed; struct list_head list; unsigned long session_data; struct libusb_device_descriptor device_descriptor; int attached; PTR_ALIGNED unsigned char os_priv[ZERO_SIZED_ARRAY]; }; struct libusb_device_handle { /* lock protects claimed_interfaces */ usbi_mutex_t lock; unsigned long claimed_interfaces; struct list_head list; struct libusb_device *dev; int auto_detach_kernel_driver; PTR_ALIGNED unsigned char os_priv[ZERO_SIZED_ARRAY]; }; enum { USBI_CLOCK_MONOTONIC, USBI_CLOCK_REALTIME }; /* in-memory transfer layout: * * 1. struct usbi_transfer * 2. struct libusb_transfer (which includes iso packets) [variable size] * 3. os private data [variable size] * * from a libusb_transfer, you can get the usbi_transfer by rewinding the * appropriate number of bytes. * the usbi_transfer includes the number of allocated packets, so you can * determine the size of the transfer and hence the start and length of the * OS-private data. */ struct usbi_transfer { int num_iso_packets; struct list_head list; struct list_head completed_list; struct timeval timeout; int transferred; uint32_t stream_id; uint8_t state_flags; /* Protected by usbi_transfer->lock */ uint8_t timeout_flags; /* Protected by the flying_stransfers_lock */ /* this lock is held during libusb_submit_transfer() and * libusb_cancel_transfer() (allowing the OS backend to prevent duplicate * cancellation, submission-during-cancellation, etc). the OS backend * should also take this lock in the handle_events path, to prevent the user * cancelling the transfer from another thread while you are processing * its completion (presumably there would be races within your OS backend * if this were possible). * Note paths taking both this and the flying_transfers_lock must * always take the flying_transfers_lock first */ usbi_mutex_t lock; }; enum usbi_transfer_state_flags { /* Transfer successfully submitted by backend */ USBI_TRANSFER_IN_FLIGHT = 1 << 0, /* Cancellation was requested via libusb_cancel_transfer() */ USBI_TRANSFER_CANCELLING = 1 << 1, /* Operation on the transfer failed because the device disappeared */ USBI_TRANSFER_DEVICE_DISAPPEARED = 1 << 2, }; enum usbi_transfer_timeout_flags { /* Set by backend submit_transfer() if the OS handles timeout */ USBI_TRANSFER_OS_HANDLES_TIMEOUT = 1 << 0, /* The transfer timeout has been handled */ USBI_TRANSFER_TIMEOUT_HANDLED = 1 << 1, /* The transfer timeout was successfully processed */ USBI_TRANSFER_TIMED_OUT = 1 << 2, }; #define USBI_TRANSFER_TO_LIBUSB_TRANSFER(transfer) \ ((struct libusb_transfer *)(((unsigned char *)(transfer)) \ + sizeof(struct usbi_transfer))) #define LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer) \ ((struct usbi_transfer *)(((unsigned char *)(transfer)) \ - sizeof(struct usbi_transfer))) static inline void *usbi_transfer_get_os_priv(struct usbi_transfer *transfer) { return ((unsigned char *)transfer) + sizeof(struct usbi_transfer) + sizeof(struct libusb_transfer) + (transfer->num_iso_packets * sizeof(struct libusb_iso_packet_descriptor)); } /* bus structures */ /* All standard descriptors have these 2 fields in common */ struct usb_descriptor_header { uint8_t bLength; uint8_t bDescriptorType; }; /* shared data and functions */ int usbi_io_init(struct libusb_context *ctx); void usbi_io_exit(struct libusb_context *ctx); struct libusb_device *usbi_alloc_device(struct libusb_context *ctx, unsigned long session_id); struct libusb_device *usbi_get_device_by_session_id(struct libusb_context *ctx, unsigned long session_id); int usbi_sanitize_device(struct libusb_device *dev); void usbi_handle_disconnect(struct libusb_device_handle *dev_handle); int usbi_handle_transfer_completion(struct usbi_transfer *itransfer, enum libusb_transfer_status status); int usbi_handle_transfer_cancellation(struct usbi_transfer *transfer); void usbi_signal_transfer_completion(struct usbi_transfer *transfer); int usbi_parse_descriptor(const unsigned char *source, const char *descriptor, void *dest, int host_endian); int usbi_device_cache_descriptor(libusb_device *dev); int usbi_get_config_index_by_value(struct libusb_device *dev, uint8_t bConfigurationValue, int *idx); void usbi_connect_device (struct libusb_device *dev); void usbi_disconnect_device (struct libusb_device *dev); int usbi_signal_event(struct libusb_context *ctx); int usbi_clear_event(struct libusb_context *ctx); /* Internal abstraction for poll (needs struct usbi_transfer on Windows) */ #if defined(OS_LINUX) || defined(OS_DARWIN) || defined(OS_OPENBSD) || defined(OS_NETBSD) ||\ defined(OS_HAIKU) || defined(OS_SUNOS) #include #include "os/poll_posix.h" #elif defined(OS_WINDOWS) || defined(OS_WINCE) #include "os/poll_windows.h" #endif struct usbi_pollfd { /* must come first */ struct libusb_pollfd pollfd; struct list_head list; }; int usbi_add_pollfd(struct libusb_context *ctx, int fd, short events); void usbi_remove_pollfd(struct libusb_context *ctx, int fd); /* device discovery */ /* we traverse usbfs without knowing how many devices we are going to find. * so we create this discovered_devs model which is similar to a linked-list * which grows when required. it can be freed once discovery has completed, * eliminating the need for a list node in the libusb_device structure * itself. */ struct discovered_devs { size_t len; size_t capacity; struct libusb_device *devices[ZERO_SIZED_ARRAY]; }; struct discovered_devs *discovered_devs_append( struct discovered_devs *discdevs, struct libusb_device *dev); /* OS abstraction */ /* This is the interface that OS backends need to implement. * All fields are mandatory, except ones explicitly noted as optional. */ struct usbi_os_backend { /* A human-readable name for your backend, e.g. "Linux usbfs" */ const char *name; /* Binary mask for backend specific capabilities */ uint32_t caps; /* Perform initialization of your backend. You might use this function * to determine specific capabilities of the system, allocate required * data structures for later, etc. * * This function is called when a libusb user initializes the library * prior to use. * * Return 0 on success, or a LIBUSB_ERROR code on failure. */ int (*init)(struct libusb_context *ctx); /* Deinitialization. Optional. This function should destroy anything * that was set up by init. * * This function is called when the user deinitializes the library. */ void (*exit)(struct libusb_context *ctx); /* Set a backend-specific option. Optional. * * This function is called when the user calls libusb_set_option() and * the option is not handled by the core library. * * Return 0 on success, or a LIBUSB_ERROR code on failure. */ int (*set_option)(struct libusb_context *ctx, enum libusb_option option, va_list args); /* Enumerate all the USB devices on the system, returning them in a list * of discovered devices. * * Your implementation should enumerate all devices on the system, * regardless of whether they have been seen before or not. * * When you have found a device, compute a session ID for it. The session * ID should uniquely represent that particular device for that particular * connection session since boot (i.e. if you disconnect and reconnect a * device immediately after, it should be assigned a different session ID). * If your OS cannot provide a unique session ID as described above, * presenting a session ID of (bus_number << 8 | device_address) should * be sufficient. Bus numbers and device addresses wrap and get reused, * but that is an unlikely case. * * After computing a session ID for a device, call * usbi_get_device_by_session_id(). This function checks if libusb already * knows about the device, and if so, it provides you with a reference * to a libusb_device structure for it. * * If usbi_get_device_by_session_id() returns NULL, it is time to allocate * a new device structure for the device. Call usbi_alloc_device() to * obtain a new libusb_device structure with reference count 1. Populate * the bus_number and device_address attributes of the new device, and * perform any other internal backend initialization you need to do. At * this point, you should be ready to provide device descriptors and so * on through the get_*_descriptor functions. Finally, call * usbi_sanitize_device() to perform some final sanity checks on the * device. Assuming all of the above succeeded, we can now continue. * If any of the above failed, remember to unreference the device that * was returned by usbi_alloc_device(). * * At this stage we have a populated libusb_device structure (either one * that was found earlier, or one that we have just allocated and * populated). This can now be added to the discovered devices list * using discovered_devs_append(). Note that discovered_devs_append() * may reallocate the list, returning a new location for it, and also * note that reallocation can fail. Your backend should handle these * error conditions appropriately. * * This function should not generate any bus I/O and should not block. * If I/O is required (e.g. reading the active configuration value), it is * OK to ignore these suggestions :) * * This function is executed when the user wishes to retrieve a list * of USB devices connected to the system. * * If the backend has hotplug support, this function is not used! * * Return 0 on success, or a LIBUSB_ERROR code on failure. */ int (*get_device_list)(struct libusb_context *ctx, struct discovered_devs **discdevs); /* Apps which were written before hotplug support, may listen for * hotplug events on their own and call libusb_get_device_list on * device addition. In this case libusb_get_device_list will likely * return a list without the new device in there, as the hotplug * event thread will still be busy enumerating the device, which may * take a while, or may not even have seen the event yet. * * To avoid this libusb_get_device_list will call this optional * function for backends with hotplug support before copying * ctx->usb_devs to the user. In this function the backend should * ensure any pending hotplug events are fully processed before * returning. * * Optional, should be implemented by backends with hotplug support. */ void (*hotplug_poll)(void); /* Open a device for I/O and other USB operations. The device handle * is preallocated for you, you can retrieve the device in question * through handle->dev. * * Your backend should allocate any internal resources required for I/O * and other operations so that those operations can happen (hopefully) * without hiccup. This is also a good place to inform libusb that it * should monitor certain file descriptors related to this device - * see the usbi_add_pollfd() function. * * This function should not generate any bus I/O and should not block. * * This function is called when the user attempts to obtain a device * handle for a device. * * Return: * - 0 on success * - LIBUSB_ERROR_ACCESS if the user has insufficient permissions * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since * discovery * - another LIBUSB_ERROR code on other failure * * Do not worry about freeing the handle on failed open, the upper layers * do this for you. */ int (*open)(struct libusb_device_handle *dev_handle); /* Close a device such that the handle cannot be used again. Your backend * should destroy any resources that were allocated in the open path. * This may also be a good place to call usbi_remove_pollfd() to inform * libusb of any file descriptors associated with this device that should * no longer be monitored. * * This function is called when the user closes a device handle. */ void (*close)(struct libusb_device_handle *dev_handle); /* Retrieve the device descriptor from a device. * * The descriptor should be retrieved from memory, NOT via bus I/O to the * device. This means that you may have to cache it in a private structure * during get_device_list enumeration. Alternatively, you may be able * to retrieve it from a kernel interface (some Linux setups can do this) * still without generating bus I/O. * * This function is expected to write DEVICE_DESC_LENGTH (18) bytes into * buffer, which is guaranteed to be big enough. * * This function is called when sanity-checking a device before adding * it to the list of discovered devices, and also when the user requests * to read the device descriptor. * * This function is expected to return the descriptor in bus-endian format * (LE). If it returns the multi-byte values in host-endian format, * set the host_endian output parameter to "1". * * Return 0 on success or a LIBUSB_ERROR code on failure. */ int (*get_device_descriptor)(struct libusb_device *device, unsigned char *buffer, int *host_endian); /* Get the ACTIVE configuration descriptor for a device. * * The descriptor should be retrieved from memory, NOT via bus I/O to the * device. This means that you may have to cache it in a private structure * during get_device_list enumeration. You may also have to keep track * of which configuration is active when the user changes it. * * This function is expected to write len bytes of data into buffer, which * is guaranteed to be big enough. If you can only do a partial write, * return an error code. * * This function is expected to return the descriptor in bus-endian format * (LE). If it returns the multi-byte values in host-endian format, * set the host_endian output parameter to "1". * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state * - another LIBUSB_ERROR code on other failure */ int (*get_active_config_descriptor)(struct libusb_device *device, unsigned char *buffer, size_t len, int *host_endian); /* Get a specific configuration descriptor for a device. * * The descriptor should be retrieved from memory, NOT via bus I/O to the * device. This means that you may have to cache it in a private structure * during get_device_list enumeration. * * The requested descriptor is expressed as a zero-based index (i.e. 0 * indicates that we are requesting the first descriptor). The index does * not (necessarily) equal the bConfigurationValue of the configuration * being requested. * * This function is expected to write len bytes of data into buffer, which * is guaranteed to be big enough. If you can only do a partial write, * return an error code. * * This function is expected to return the descriptor in bus-endian format * (LE). If it returns the multi-byte values in host-endian format, * set the host_endian output parameter to "1". * * Return the length read on success or a LIBUSB_ERROR code on failure. */ int (*get_config_descriptor)(struct libusb_device *device, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian); /* Like get_config_descriptor but then by bConfigurationValue instead * of by index. * * Optional, if not present the core will call get_config_descriptor * for all configs until it finds the desired bConfigurationValue. * * Returns a pointer to the raw-descriptor in *buffer, this memory * is valid as long as device is valid. * * Returns the length of the returned raw-descriptor on success, * or a LIBUSB_ERROR code on failure. */ int (*get_config_descriptor_by_value)(struct libusb_device *device, uint8_t bConfigurationValue, unsigned char **buffer, int *host_endian); /* Get the bConfigurationValue for the active configuration for a device. * Optional. This should only be implemented if you can retrieve it from * cache (don't generate I/O). * * If you cannot retrieve this from cache, either do not implement this * function, or return LIBUSB_ERROR_NOT_SUPPORTED. This will cause * libusb to retrieve the information through a standard control transfer. * * This function must be non-blocking. * Return: * - 0 on success * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - LIBUSB_ERROR_NOT_SUPPORTED if the value cannot be retrieved without * blocking * - another LIBUSB_ERROR code on other failure. */ int (*get_configuration)(struct libusb_device_handle *dev_handle, int *config); /* Set the active configuration for a device. * * A configuration value of -1 should put the device in unconfigured state. * * This function can block. * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if the configuration does not exist * - LIBUSB_ERROR_BUSY if interfaces are currently claimed (and hence * configuration cannot be changed) * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - another LIBUSB_ERROR code on other failure. */ int (*set_configuration)(struct libusb_device_handle *dev_handle, int config); /* Claim an interface. When claimed, the application can then perform * I/O to an interface's endpoints. * * This function should not generate any bus I/O and should not block. * Interface claiming is a logical operation that simply ensures that * no other drivers/applications are using the interface, and after * claiming, no other drivers/applications can use the interface because * we now "own" it. * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if the interface does not exist * - LIBUSB_ERROR_BUSY if the interface is in use by another driver/app * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - another LIBUSB_ERROR code on other failure */ int (*claim_interface)(struct libusb_device_handle *dev_handle, int interface_number); /* Release a previously claimed interface. * * This function should also generate a SET_INTERFACE control request, * resetting the alternate setting of that interface to 0. It's OK for * this function to block as a result. * * You will only ever be asked to release an interface which was * successfully claimed earlier. * * Return: * - 0 on success * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - another LIBUSB_ERROR code on other failure */ int (*release_interface)(struct libusb_device_handle *dev_handle, int interface_number); /* Set the alternate setting for an interface. * * You will only ever be asked to set the alternate setting for an * interface which was successfully claimed earlier. * * It's OK for this function to block. * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if the alternate setting does not exist * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - another LIBUSB_ERROR code on other failure */ int (*set_interface_altsetting)(struct libusb_device_handle *dev_handle, int interface_number, int altsetting); /* Clear a halt/stall condition on an endpoint. * * It's OK for this function to block. * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - another LIBUSB_ERROR code on other failure */ int (*clear_halt)(struct libusb_device_handle *dev_handle, unsigned char endpoint); /* Perform a USB port reset to reinitialize a device. * * If possible, the device handle should still be usable after the reset * completes, assuming that the device descriptors did not change during * reset and all previous interface state can be restored. * * If something changes, or you cannot easily locate/verify the resetted * device, return LIBUSB_ERROR_NOT_FOUND. This prompts the application * to close the old handle and re-enumerate the device. * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if re-enumeration is required, or if the device * has been disconnected since it was opened * - another LIBUSB_ERROR code on other failure */ int (*reset_device)(struct libusb_device_handle *dev_handle); /* Alloc num_streams usb3 bulk streams on the passed in endpoints */ int (*alloc_streams)(struct libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints, int num_endpoints); /* Free usb3 bulk streams allocated with alloc_streams */ int (*free_streams)(struct libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints); /* Allocate persistent DMA memory for the given device, suitable for * zerocopy. May return NULL on failure. Optional to implement. */ unsigned char *(*dev_mem_alloc)(struct libusb_device_handle *handle, size_t len); /* Free memory allocated by dev_mem_alloc. */ int (*dev_mem_free)(struct libusb_device_handle *handle, unsigned char *buffer, size_t len); /* Determine if a kernel driver is active on an interface. Optional. * * The presence of a kernel driver on an interface indicates that any * calls to claim_interface would fail with the LIBUSB_ERROR_BUSY code. * * Return: * - 0 if no driver is active * - 1 if a driver is active * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - another LIBUSB_ERROR code on other failure */ int (*kernel_driver_active)(struct libusb_device_handle *dev_handle, int interface_number); /* Detach a kernel driver from an interface. Optional. * * After detaching a kernel driver, the interface should be available * for claim. * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if no kernel driver was active * - LIBUSB_ERROR_INVALID_PARAM if the interface does not exist * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - another LIBUSB_ERROR code on other failure */ int (*detach_kernel_driver)(struct libusb_device_handle *dev_handle, int interface_number); /* Attach a kernel driver to an interface. Optional. * * Reattach a kernel driver to the device. * * Return: * - 0 on success * - LIBUSB_ERROR_NOT_FOUND if no kernel driver was active * - LIBUSB_ERROR_INVALID_PARAM if the interface does not exist * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected since it * was opened * - LIBUSB_ERROR_BUSY if a program or driver has claimed the interface, * preventing reattachment * - another LIBUSB_ERROR code on other failure */ int (*attach_kernel_driver)(struct libusb_device_handle *dev_handle, int interface_number); /* Destroy a device. Optional. * * This function is called when the last reference to a device is * destroyed. It should free any resources allocated in the get_device_list * path. */ void (*destroy_device)(struct libusb_device *dev); /* Submit a transfer. Your implementation should take the transfer, * morph it into whatever form your platform requires, and submit it * asynchronously. * * This function must not block. * * This function gets called with the flying_transfers_lock locked! * * Return: * - 0 on success * - LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * - another LIBUSB_ERROR code on other failure */ int (*submit_transfer)(struct usbi_transfer *itransfer); /* Cancel a previously submitted transfer. * * This function must not block. The transfer cancellation must complete * later, resulting in a call to usbi_handle_transfer_cancellation() * from the context of handle_events. */ int (*cancel_transfer)(struct usbi_transfer *itransfer); /* Clear a transfer as if it has completed or cancelled, but do not * report any completion/cancellation to the library. You should free * all private data from the transfer as if you were just about to report * completion or cancellation. * * This function might seem a bit out of place. It is used when libusb * detects a disconnected device - it calls this function for all pending * transfers before reporting completion (with the disconnect code) to * the user. Maybe we can improve upon this internal interface in future. */ void (*clear_transfer_priv)(struct usbi_transfer *itransfer); /* Handle any pending events on file descriptors. Optional. * * Provide this function when file descriptors directly indicate device * or transfer activity. If your backend does not have such file descriptors, * implement the handle_transfer_completion function below. * * This involves monitoring any active transfers and processing their * completion or cancellation. * * The function is passed an array of pollfd structures (size nfds) * as a result of the poll() system call. The num_ready parameter * indicates the number of file descriptors that have reported events * (i.e. the poll() return value). This should be enough information * for you to determine which actions need to be taken on the currently * active transfers. * * For any cancelled transfers, call usbi_handle_transfer_cancellation(). * For completed transfers, call usbi_handle_transfer_completion(). * For control/bulk/interrupt transfers, populate the "transferred" * element of the appropriate usbi_transfer structure before calling the * above functions. For isochronous transfers, populate the status and * transferred fields of the iso packet descriptors of the transfer. * * This function should also be able to detect disconnection of the * device, reporting that situation with usbi_handle_disconnect(). * * When processing an event related to a transfer, you probably want to * take usbi_transfer.lock to prevent races. See the documentation for * the usbi_transfer structure. * * Return 0 on success, or a LIBUSB_ERROR code on failure. */ int (*handle_events)(struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready); /* Handle transfer completion. Optional. * * Provide this function when there are no file descriptors available * that directly indicate device or transfer activity. If your backend does * have such file descriptors, implement the handle_events function above. * * Your backend must tell the library when a transfer has completed by * calling usbi_signal_transfer_completion(). You should store any private * information about the transfer and its completion status in the transfer's * private backend data. * * During event handling, this function will be called on each transfer for * which usbi_signal_transfer_completion() was called. * * For any cancelled transfers, call usbi_handle_transfer_cancellation(). * For completed transfers, call usbi_handle_transfer_completion(). * For control/bulk/interrupt transfers, populate the "transferred" * element of the appropriate usbi_transfer structure before calling the * above functions. For isochronous transfers, populate the status and * transferred fields of the iso packet descriptors of the transfer. * * Return 0 on success, or a LIBUSB_ERROR code on failure. */ int (*handle_transfer_completion)(struct usbi_transfer *itransfer); /* Get time from specified clock. At least two clocks must be implemented by the backend: USBI_CLOCK_REALTIME, and USBI_CLOCK_MONOTONIC. Description of clocks: USBI_CLOCK_REALTIME : clock returns time since system epoch. USBI_CLOCK_MONOTONIC: clock returns time since unspecified start time (usually boot). */ int (*clock_gettime)(int clkid, struct timespec *tp); #ifdef USBI_TIMERFD_AVAILABLE /* clock ID of the clock that should be used for timerfd */ clockid_t (*get_timerfd_clockid)(void); #endif /* Number of bytes to reserve for per-context private backend data. * This private data area is accessible through the "os_priv" field of * struct libusb_context. */ size_t context_priv_size; /* Number of bytes to reserve for per-device private backend data. * This private data area is accessible through the "os_priv" field of * struct libusb_device. */ size_t device_priv_size; /* Number of bytes to reserve for per-handle private backend data. * This private data area is accessible through the "os_priv" field of * struct libusb_device. */ size_t device_handle_priv_size; /* Number of bytes to reserve for per-transfer private backend data. * This private data area is accessible by calling * usbi_transfer_get_os_priv() on the appropriate usbi_transfer instance. */ size_t transfer_priv_size; }; extern const struct usbi_os_backend usbi_backend; extern struct list_head active_contexts_list; extern usbi_mutex_static_t active_contexts_lock; #ifdef __cplusplus } #endif #endif release/libusb/libusb/libusb-1.0.rc0000664000000000000000000000335314261476162016055 0ustar rootroot/* * For Windows: input this file to the Resoure Compiler to produce a binary * .res file. This is then embedded in the resultant library (like any other * compilation object). * The information can then be queried using standard APIs and can also be * viewed with utilities such as Windows Explorer. */ #ifndef _WIN32_WCE #include "winresrc.h" #endif #include "version.h" #ifndef LIBUSB_VERSIONSTRING #define LU_STR(s) #s #define LU_XSTR(s) LU_STR(s) #if LIBUSB_NANO > 0 #define LIBUSB_VERSIONSTRING \ LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." \ LU_XSTR(LIBUSB_MICRO) "." LU_XSTR(LIBUSB_NANO) LIBUSB_RC "\0" #else #define LIBUSB_VERSIONSTRING \ LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." \ LU_XSTR(LIBUSB_MICRO) LIBUSB_RC "\0" #endif #endif VS_VERSION_INFO VERSIONINFO FILEVERSION LIBUSB_MAJOR,LIBUSB_MINOR,LIBUSB_MICRO,LIBUSB_NANO PRODUCTVERSION LIBUSB_MAJOR,LIBUSB_MINOR,LIBUSB_MICRO,LIBUSB_NANO FILEFLAGSMASK 0x3fL #ifdef _DEBUG FILEFLAGS 0x1L #else FILEFLAGS 0x0L #endif FILEOS 0x40004L FILETYPE 0x2L FILESUBTYPE 0x0L BEGIN BLOCK "StringFileInfo" BEGIN BLOCK "040904b0" BEGIN VALUE "CompanyName", "libusb.info\0" VALUE "FileDescription", "C library for writing portable USB drivers in userspace\0" VALUE "FileVersion", LIBUSB_VERSIONSTRING VALUE "InternalName", "libusb\0" VALUE "LegalCopyright", "See individual source files, GNU LGPL v2.1 or later.\0" VALUE "LegalTrademarks", "http://www.gnu.org/licenses/lgpl-2.1.html\0" VALUE "OriginalFilename", "libusb-1.0.dll\0" VALUE "PrivateBuild", "\0" VALUE "ProductName", "libusb-1.0\0" VALUE "ProductVersion", LIBUSB_VERSIONSTRING VALUE "SpecialBuild", "\0" END END BLOCK "VarFileInfo" BEGIN VALUE "Translation", 0x409, 1200 END END release/libusb/libusb/libusb.h0000664000000000000000000021614214261476161015405 0ustar rootroot/* * Public libusb header file * Copyright © 2001 Johannes Erdfelt * Copyright © 2007-2008 Daniel Drake * Copyright © 2012 Pete Batard * Copyright © 2012 Nathan Hjelm * For more information, please visit: http://libusb.info * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBUSB_H #define LIBUSB_H #ifdef _MSC_VER /* on MS environments, the inline keyword is available in C++ only */ #if !defined(__cplusplus) #define inline __inline #endif /* ssize_t is also not available (copy/paste from MinGW) */ #ifndef _SSIZE_T_DEFINED #define _SSIZE_T_DEFINED #undef ssize_t #ifdef _WIN64 typedef __int64 ssize_t; #else typedef int ssize_t; #endif /* _WIN64 */ #endif /* _SSIZE_T_DEFINED */ #endif /* _MSC_VER */ /* stdint.h is not available on older MSVC */ #if defined(_MSC_VER) && (_MSC_VER < 1600) && (!defined(_STDINT)) && (!defined(_STDINT_H)) typedef unsigned __int8 uint8_t; typedef unsigned __int16 uint16_t; typedef unsigned __int32 uint32_t; #else #include #endif #if !defined(_WIN32_WCE) #include #endif #if defined(__linux__) || defined(__APPLE__) || defined(__CYGWIN__) || defined(__HAIKU__) #include #endif #include #include #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) #define ZERO_SIZED_ARRAY /* [] - valid C99 code */ #else #define ZERO_SIZED_ARRAY 0 /* [0] - non-standard, but usually working code */ #endif /* 'interface' might be defined as a macro on Windows, so we need to * undefine it so as not to break the current libusb API, because * libusb_config_descriptor has an 'interface' member * As this can be problematic if you include windows.h after libusb.h * in your sources, we force windows.h to be included first. */ #if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE) #include #if defined(interface) #undef interface #endif #if !defined(__CYGWIN__) #include #endif #endif #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) #define LIBUSB_DEPRECATED_FOR(f) \ __attribute__((deprecated("Use " #f " instead"))) #elif __GNUC__ >= 3 #define LIBUSB_DEPRECATED_FOR(f) __attribute__((deprecated)) #else #define LIBUSB_DEPRECATED_FOR(f) #endif /* __GNUC__ */ /** \def LIBUSB_CALL * \ingroup libusb_misc * libusb's Windows calling convention. * * Under Windows, the selection of available compilers and configurations * means that, unlike other platforms, there is not one true calling * convention (calling convention: the manner in which parameters are * passed to functions in the generated assembly code). * * Matching the Windows API itself, libusb uses the WINAPI convention (which * translates to the stdcall convention) and guarantees that the * library is compiled in this way. The public header file also includes * appropriate annotations so that your own software will use the right * convention, even if another convention is being used by default within * your codebase. * * The one consideration that you must apply in your software is to mark * all functions which you use as libusb callbacks with this LIBUSB_CALL * annotation, so that they too get compiled for the correct calling * convention. * * On non-Windows operating systems, this macro is defined as nothing. This * means that you can apply it to your code without worrying about * cross-platform compatibility. */ /* LIBUSB_CALL must be defined on both definition and declaration of libusb * functions. You'd think that declaration would be enough, but cygwin will * complain about conflicting types unless both are marked this way. * The placement of this macro is important too; it must appear after the * return type, before the function name. See internal documentation for * API_EXPORTED. */ #if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE) #define LIBUSB_CALL WINAPI #else #define LIBUSB_CALL #endif /** \def LIBUSB_API_VERSION * \ingroup libusb_misc * libusb's API version. * * Since version 1.0.13, to help with feature detection, libusb defines * a LIBUSB_API_VERSION macro that gets increased every time there is a * significant change to the API, such as the introduction of a new call, * the definition of a new macro/enum member, or any other element that * libusb applications may want to detect at compilation time. * * The macro is typically used in an application as follows: * \code * #if defined(LIBUSB_API_VERSION) && (LIBUSB_API_VERSION >= 0x01001234) * // Use one of the newer features from the libusb API * #endif * \endcode * * Internally, LIBUSB_API_VERSION is defined as follows: * (libusb major << 24) | (libusb minor << 16) | (16 bit incremental) */ #define LIBUSB_API_VERSION 0x01000106 /* The following is kept for compatibility, but will be deprecated in the future */ #define LIBUSBX_API_VERSION LIBUSB_API_VERSION #ifdef __cplusplus extern "C" { #endif /** * \ingroup libusb_misc * Convert a 16-bit value from host-endian to little-endian format. On * little endian systems, this function does nothing. On big endian systems, * the bytes are swapped. * \param x the host-endian value to convert * \returns the value in little-endian byte order */ static inline uint16_t libusb_cpu_to_le16(const uint16_t x) { union { uint8_t b8[2]; uint16_t b16; } _tmp; _tmp.b8[1] = (uint8_t) (x >> 8); _tmp.b8[0] = (uint8_t) (x & 0xff); return _tmp.b16; } /** \def libusb_le16_to_cpu * \ingroup libusb_misc * Convert a 16-bit value from little-endian to host-endian format. On * little endian systems, this function does nothing. On big endian systems, * the bytes are swapped. * \param x the little-endian value to convert * \returns the value in host-endian byte order */ #define libusb_le16_to_cpu libusb_cpu_to_le16 /* standard USB stuff */ /** \ingroup libusb_desc * Device and/or Interface Class codes */ enum libusb_class_code { /** In the context of a \ref libusb_device_descriptor "device descriptor", * this bDeviceClass value indicates that each interface specifies its * own class information and all interfaces operate independently. */ LIBUSB_CLASS_PER_INTERFACE = 0, /** Audio class */ LIBUSB_CLASS_AUDIO = 1, /** Communications class */ LIBUSB_CLASS_COMM = 2, /** Human Interface Device class */ LIBUSB_CLASS_HID = 3, /** Physical */ LIBUSB_CLASS_PHYSICAL = 5, /** Printer class */ LIBUSB_CLASS_PRINTER = 7, /** Image class */ LIBUSB_CLASS_PTP = 6, /* legacy name from libusb-0.1 usb.h */ LIBUSB_CLASS_IMAGE = 6, /** Mass storage class */ LIBUSB_CLASS_MASS_STORAGE = 8, /** Hub class */ LIBUSB_CLASS_HUB = 9, /** Data class */ LIBUSB_CLASS_DATA = 10, /** Smart Card */ LIBUSB_CLASS_SMART_CARD = 0x0b, /** Content Security */ LIBUSB_CLASS_CONTENT_SECURITY = 0x0d, /** Video */ LIBUSB_CLASS_VIDEO = 0x0e, /** Personal Healthcare */ LIBUSB_CLASS_PERSONAL_HEALTHCARE = 0x0f, /** Diagnostic Device */ LIBUSB_CLASS_DIAGNOSTIC_DEVICE = 0xdc, /** Wireless class */ LIBUSB_CLASS_WIRELESS = 0xe0, /** Application class */ LIBUSB_CLASS_APPLICATION = 0xfe, /** Class is vendor-specific */ LIBUSB_CLASS_VENDOR_SPEC = 0xff }; /** \ingroup libusb_desc * Descriptor types as defined by the USB specification. */ enum libusb_descriptor_type { /** Device descriptor. See libusb_device_descriptor. */ LIBUSB_DT_DEVICE = 0x01, /** Configuration descriptor. See libusb_config_descriptor. */ LIBUSB_DT_CONFIG = 0x02, /** String descriptor */ LIBUSB_DT_STRING = 0x03, /** Interface descriptor. See libusb_interface_descriptor. */ LIBUSB_DT_INTERFACE = 0x04, /** Endpoint descriptor. See libusb_endpoint_descriptor. */ LIBUSB_DT_ENDPOINT = 0x05, /** BOS descriptor */ LIBUSB_DT_BOS = 0x0f, /** Device Capability descriptor */ LIBUSB_DT_DEVICE_CAPABILITY = 0x10, /** HID descriptor */ LIBUSB_DT_HID = 0x21, /** HID report descriptor */ LIBUSB_DT_REPORT = 0x22, /** Physical descriptor */ LIBUSB_DT_PHYSICAL = 0x23, /** Hub descriptor */ LIBUSB_DT_HUB = 0x29, /** SuperSpeed Hub descriptor */ LIBUSB_DT_SUPERSPEED_HUB = 0x2a, /** SuperSpeed Endpoint Companion descriptor */ LIBUSB_DT_SS_ENDPOINT_COMPANION = 0x30 }; /* Descriptor sizes per descriptor type */ #define LIBUSB_DT_DEVICE_SIZE 18 #define LIBUSB_DT_CONFIG_SIZE 9 #define LIBUSB_DT_INTERFACE_SIZE 9 #define LIBUSB_DT_ENDPOINT_SIZE 7 #define LIBUSB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */ #define LIBUSB_DT_HUB_NONVAR_SIZE 7 #define LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE 6 #define LIBUSB_DT_BOS_SIZE 5 #define LIBUSB_DT_DEVICE_CAPABILITY_SIZE 3 /* BOS descriptor sizes */ #define LIBUSB_BT_USB_2_0_EXTENSION_SIZE 7 #define LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE 10 #define LIBUSB_BT_CONTAINER_ID_SIZE 20 /* We unwrap the BOS => define its max size */ #define LIBUSB_DT_BOS_MAX_SIZE ((LIBUSB_DT_BOS_SIZE) +\ (LIBUSB_BT_USB_2_0_EXTENSION_SIZE) +\ (LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE) +\ (LIBUSB_BT_CONTAINER_ID_SIZE)) #define LIBUSB_ENDPOINT_ADDRESS_MASK 0x0f /* in bEndpointAddress */ #define LIBUSB_ENDPOINT_DIR_MASK 0x80 /** \ingroup libusb_desc * Endpoint direction. Values for bit 7 of the * \ref libusb_endpoint_descriptor::bEndpointAddress "endpoint address" scheme. */ enum libusb_endpoint_direction { /** In: device-to-host */ LIBUSB_ENDPOINT_IN = 0x80, /** Out: host-to-device */ LIBUSB_ENDPOINT_OUT = 0x00 }; #define LIBUSB_TRANSFER_TYPE_MASK 0x03 /* in bmAttributes */ /** \ingroup libusb_desc * Endpoint transfer type. Values for bits 0:1 of the * \ref libusb_endpoint_descriptor::bmAttributes "endpoint attributes" field. */ enum libusb_transfer_type { /** Control endpoint */ LIBUSB_TRANSFER_TYPE_CONTROL = 0, /** Isochronous endpoint */ LIBUSB_TRANSFER_TYPE_ISOCHRONOUS = 1, /** Bulk endpoint */ LIBUSB_TRANSFER_TYPE_BULK = 2, /** Interrupt endpoint */ LIBUSB_TRANSFER_TYPE_INTERRUPT = 3, /** Stream endpoint */ LIBUSB_TRANSFER_TYPE_BULK_STREAM = 4, }; /** \ingroup libusb_misc * Standard requests, as defined in table 9-5 of the USB 3.0 specifications */ enum libusb_standard_request { /** Request status of the specific recipient */ LIBUSB_REQUEST_GET_STATUS = 0x00, /** Clear or disable a specific feature */ LIBUSB_REQUEST_CLEAR_FEATURE = 0x01, /* 0x02 is reserved */ /** Set or enable a specific feature */ LIBUSB_REQUEST_SET_FEATURE = 0x03, /* 0x04 is reserved */ /** Set device address for all future accesses */ LIBUSB_REQUEST_SET_ADDRESS = 0x05, /** Get the specified descriptor */ LIBUSB_REQUEST_GET_DESCRIPTOR = 0x06, /** Used to update existing descriptors or add new descriptors */ LIBUSB_REQUEST_SET_DESCRIPTOR = 0x07, /** Get the current device configuration value */ LIBUSB_REQUEST_GET_CONFIGURATION = 0x08, /** Set device configuration */ LIBUSB_REQUEST_SET_CONFIGURATION = 0x09, /** Return the selected alternate setting for the specified interface */ LIBUSB_REQUEST_GET_INTERFACE = 0x0A, /** Select an alternate interface for the specified interface */ LIBUSB_REQUEST_SET_INTERFACE = 0x0B, /** Set then report an endpoint's synchronization frame */ LIBUSB_REQUEST_SYNCH_FRAME = 0x0C, /** Sets both the U1 and U2 Exit Latency */ LIBUSB_REQUEST_SET_SEL = 0x30, /** Delay from the time a host transmits a packet to the time it is * received by the device. */ LIBUSB_SET_ISOCH_DELAY = 0x31, }; /** \ingroup libusb_misc * Request type bits of the * \ref libusb_control_setup::bmRequestType "bmRequestType" field in control * transfers. */ enum libusb_request_type { /** Standard */ LIBUSB_REQUEST_TYPE_STANDARD = (0x00 << 5), /** Class */ LIBUSB_REQUEST_TYPE_CLASS = (0x01 << 5), /** Vendor */ LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5), /** Reserved */ LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5) }; /** \ingroup libusb_misc * Recipient bits of the * \ref libusb_control_setup::bmRequestType "bmRequestType" field in control * transfers. Values 4 through 31 are reserved. */ enum libusb_request_recipient { /** Device */ LIBUSB_RECIPIENT_DEVICE = 0x00, /** Interface */ LIBUSB_RECIPIENT_INTERFACE = 0x01, /** Endpoint */ LIBUSB_RECIPIENT_ENDPOINT = 0x02, /** Other */ LIBUSB_RECIPIENT_OTHER = 0x03, }; #define LIBUSB_ISO_SYNC_TYPE_MASK 0x0C /** \ingroup libusb_desc * Synchronization type for isochronous endpoints. Values for bits 2:3 of the * \ref libusb_endpoint_descriptor::bmAttributes "bmAttributes" field in * libusb_endpoint_descriptor. */ enum libusb_iso_sync_type { /** No synchronization */ LIBUSB_ISO_SYNC_TYPE_NONE = 0, /** Asynchronous */ LIBUSB_ISO_SYNC_TYPE_ASYNC = 1, /** Adaptive */ LIBUSB_ISO_SYNC_TYPE_ADAPTIVE = 2, /** Synchronous */ LIBUSB_ISO_SYNC_TYPE_SYNC = 3 }; #define LIBUSB_ISO_USAGE_TYPE_MASK 0x30 /** \ingroup libusb_desc * Usage type for isochronous endpoints. Values for bits 4:5 of the * \ref libusb_endpoint_descriptor::bmAttributes "bmAttributes" field in * libusb_endpoint_descriptor. */ enum libusb_iso_usage_type { /** Data endpoint */ LIBUSB_ISO_USAGE_TYPE_DATA = 0, /** Feedback endpoint */ LIBUSB_ISO_USAGE_TYPE_FEEDBACK = 1, /** Implicit feedback Data endpoint */ LIBUSB_ISO_USAGE_TYPE_IMPLICIT = 2, }; /** \ingroup libusb_desc * A structure representing the standard USB device descriptor. This * descriptor is documented in section 9.6.1 of the USB 3.0 specification. * All multiple-byte fields are represented in host-endian format. */ struct libusb_device_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE LIBUSB_DT_DEVICE in this * context. */ uint8_t bDescriptorType; /** USB specification release number in binary-coded decimal. A value of * 0x0200 indicates USB 2.0, 0x0110 indicates USB 1.1, etc. */ uint16_t bcdUSB; /** USB-IF class code for the device. See \ref libusb_class_code. */ uint8_t bDeviceClass; /** USB-IF subclass code for the device, qualified by the bDeviceClass * value */ uint8_t bDeviceSubClass; /** USB-IF protocol code for the device, qualified by the bDeviceClass and * bDeviceSubClass values */ uint8_t bDeviceProtocol; /** Maximum packet size for endpoint 0 */ uint8_t bMaxPacketSize0; /** USB-IF vendor ID */ uint16_t idVendor; /** USB-IF product ID */ uint16_t idProduct; /** Device release number in binary-coded decimal */ uint16_t bcdDevice; /** Index of string descriptor describing manufacturer */ uint8_t iManufacturer; /** Index of string descriptor describing product */ uint8_t iProduct; /** Index of string descriptor containing device serial number */ uint8_t iSerialNumber; /** Number of possible configurations */ uint8_t bNumConfigurations; }; /** \ingroup libusb_desc * A structure representing the standard USB endpoint descriptor. This * descriptor is documented in section 9.6.6 of the USB 3.0 specification. * All multiple-byte fields are represented in host-endian format. */ struct libusb_endpoint_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_ENDPOINT LIBUSB_DT_ENDPOINT in * this context. */ uint8_t bDescriptorType; /** The address of the endpoint described by this descriptor. Bits 0:3 are * the endpoint number. Bits 4:6 are reserved. Bit 7 indicates direction, * see \ref libusb_endpoint_direction. */ uint8_t bEndpointAddress; /** Attributes which apply to the endpoint when it is configured using * the bConfigurationValue. Bits 0:1 determine the transfer type and * correspond to \ref libusb_transfer_type. Bits 2:3 are only used for * isochronous endpoints and correspond to \ref libusb_iso_sync_type. * Bits 4:5 are also only used for isochronous endpoints and correspond to * \ref libusb_iso_usage_type. Bits 6:7 are reserved. */ uint8_t bmAttributes; /** Maximum packet size this endpoint is capable of sending/receiving. */ uint16_t wMaxPacketSize; /** Interval for polling endpoint for data transfers. */ uint8_t bInterval; /** For audio devices only: the rate at which synchronization feedback * is provided. */ uint8_t bRefresh; /** For audio devices only: the address if the synch endpoint */ uint8_t bSynchAddress; /** Extra descriptors. If libusb encounters unknown endpoint descriptors, * it will store them here, should you wish to parse them. */ const unsigned char *extra; /** Length of the extra descriptors, in bytes. */ int extra_length; }; /** \ingroup libusb_desc * A structure representing the standard USB interface descriptor. This * descriptor is documented in section 9.6.5 of the USB 3.0 specification. * All multiple-byte fields are represented in host-endian format. */ struct libusb_interface_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_INTERFACE LIBUSB_DT_INTERFACE * in this context. */ uint8_t bDescriptorType; /** Number of this interface */ uint8_t bInterfaceNumber; /** Value used to select this alternate setting for this interface */ uint8_t bAlternateSetting; /** Number of endpoints used by this interface (excluding the control * endpoint). */ uint8_t bNumEndpoints; /** USB-IF class code for this interface. See \ref libusb_class_code. */ uint8_t bInterfaceClass; /** USB-IF subclass code for this interface, qualified by the * bInterfaceClass value */ uint8_t bInterfaceSubClass; /** USB-IF protocol code for this interface, qualified by the * bInterfaceClass and bInterfaceSubClass values */ uint8_t bInterfaceProtocol; /** Index of string descriptor describing this interface */ uint8_t iInterface; /** Array of endpoint descriptors. This length of this array is determined * by the bNumEndpoints field. */ const struct libusb_endpoint_descriptor *endpoint; /** Extra descriptors. If libusb encounters unknown interface descriptors, * it will store them here, should you wish to parse them. */ const unsigned char *extra; /** Length of the extra descriptors, in bytes. */ int extra_length; }; /** \ingroup libusb_desc * A collection of alternate settings for a particular USB interface. */ struct libusb_interface { /** Array of interface descriptors. The length of this array is determined * by the num_altsetting field. */ const struct libusb_interface_descriptor *altsetting; /** The number of alternate settings that belong to this interface */ int num_altsetting; }; /** \ingroup libusb_desc * A structure representing the standard USB configuration descriptor. This * descriptor is documented in section 9.6.3 of the USB 3.0 specification. * All multiple-byte fields are represented in host-endian format. */ struct libusb_config_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_CONFIG LIBUSB_DT_CONFIG * in this context. */ uint8_t bDescriptorType; /** Total length of data returned for this configuration */ uint16_t wTotalLength; /** Number of interfaces supported by this configuration */ uint8_t bNumInterfaces; /** Identifier value for this configuration */ uint8_t bConfigurationValue; /** Index of string descriptor describing this configuration */ uint8_t iConfiguration; /** Configuration characteristics */ uint8_t bmAttributes; /** Maximum power consumption of the USB device from this bus in this * configuration when the device is fully operation. Expressed in units * of 2 mA when the device is operating in high-speed mode and in units * of 8 mA when the device is operating in super-speed mode. */ uint8_t MaxPower; /** Array of interfaces supported by this configuration. The length of * this array is determined by the bNumInterfaces field. */ const struct libusb_interface *interface; /** Extra descriptors. If libusb encounters unknown configuration * descriptors, it will store them here, should you wish to parse them. */ const unsigned char *extra; /** Length of the extra descriptors, in bytes. */ int extra_length; }; /** \ingroup libusb_desc * A structure representing the superspeed endpoint companion * descriptor. This descriptor is documented in section 9.6.7 of * the USB 3.0 specification. All multiple-byte fields are represented in * host-endian format. */ struct libusb_ss_endpoint_companion_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_SS_ENDPOINT_COMPANION in * this context. */ uint8_t bDescriptorType; /** The maximum number of packets the endpoint can send or * receive as part of a burst. */ uint8_t bMaxBurst; /** In bulk EP: bits 4:0 represents the maximum number of * streams the EP supports. In isochronous EP: bits 1:0 * represents the Mult - a zero based value that determines * the maximum number of packets within a service interval */ uint8_t bmAttributes; /** The total number of bytes this EP will transfer every * service interval. valid only for periodic EPs. */ uint16_t wBytesPerInterval; }; /** \ingroup libusb_desc * A generic representation of a BOS Device Capability descriptor. It is * advised to check bDevCapabilityType and call the matching * libusb_get_*_descriptor function to get a structure fully matching the type. */ struct libusb_bos_dev_capability_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY * LIBUSB_DT_DEVICE_CAPABILITY in this context. */ uint8_t bDescriptorType; /** Device Capability type */ uint8_t bDevCapabilityType; /** Device Capability data (bLength - 3 bytes) */ uint8_t dev_capability_data[ZERO_SIZED_ARRAY]; }; /** \ingroup libusb_desc * A structure representing the Binary Device Object Store (BOS) descriptor. * This descriptor is documented in section 9.6.2 of the USB 3.0 specification. * All multiple-byte fields are represented in host-endian format. */ struct libusb_bos_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_BOS LIBUSB_DT_BOS * in this context. */ uint8_t bDescriptorType; /** Length of this descriptor and all of its sub descriptors */ uint16_t wTotalLength; /** The number of separate device capability descriptors in * the BOS */ uint8_t bNumDeviceCaps; /** bNumDeviceCap Device Capability Descriptors */ struct libusb_bos_dev_capability_descriptor *dev_capability[ZERO_SIZED_ARRAY]; }; /** \ingroup libusb_desc * A structure representing the USB 2.0 Extension descriptor * This descriptor is documented in section 9.6.2.1 of the USB 3.0 specification. * All multiple-byte fields are represented in host-endian format. */ struct libusb_usb_2_0_extension_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY * LIBUSB_DT_DEVICE_CAPABILITY in this context. */ uint8_t bDescriptorType; /** Capability type. Will have value * \ref libusb_capability_type::LIBUSB_BT_USB_2_0_EXTENSION * LIBUSB_BT_USB_2_0_EXTENSION in this context. */ uint8_t bDevCapabilityType; /** Bitmap encoding of supported device level features. * A value of one in a bit location indicates a feature is * supported; a value of zero indicates it is not supported. * See \ref libusb_usb_2_0_extension_attributes. */ uint32_t bmAttributes; }; /** \ingroup libusb_desc * A structure representing the SuperSpeed USB Device Capability descriptor * This descriptor is documented in section 9.6.2.2 of the USB 3.0 specification. * All multiple-byte fields are represented in host-endian format. */ struct libusb_ss_usb_device_capability_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY * LIBUSB_DT_DEVICE_CAPABILITY in this context. */ uint8_t bDescriptorType; /** Capability type. Will have value * \ref libusb_capability_type::LIBUSB_BT_SS_USB_DEVICE_CAPABILITY * LIBUSB_BT_SS_USB_DEVICE_CAPABILITY in this context. */ uint8_t bDevCapabilityType; /** Bitmap encoding of supported device level features. * A value of one in a bit location indicates a feature is * supported; a value of zero indicates it is not supported. * See \ref libusb_ss_usb_device_capability_attributes. */ uint8_t bmAttributes; /** Bitmap encoding of the speed supported by this device when * operating in SuperSpeed mode. See \ref libusb_supported_speed. */ uint16_t wSpeedSupported; /** The lowest speed at which all the functionality supported * by the device is available to the user. For example if the * device supports all its functionality when connected at * full speed and above then it sets this value to 1. */ uint8_t bFunctionalitySupport; /** U1 Device Exit Latency. */ uint8_t bU1DevExitLat; /** U2 Device Exit Latency. */ uint16_t bU2DevExitLat; }; /** \ingroup libusb_desc * A structure representing the Container ID descriptor. * This descriptor is documented in section 9.6.2.3 of the USB 3.0 specification. * All multiple-byte fields, except UUIDs, are represented in host-endian format. */ struct libusb_container_id_descriptor { /** Size of this descriptor (in bytes) */ uint8_t bLength; /** Descriptor type. Will have value * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY * LIBUSB_DT_DEVICE_CAPABILITY in this context. */ uint8_t bDescriptorType; /** Capability type. Will have value * \ref libusb_capability_type::LIBUSB_BT_CONTAINER_ID * LIBUSB_BT_CONTAINER_ID in this context. */ uint8_t bDevCapabilityType; /** Reserved field */ uint8_t bReserved; /** 128 bit UUID */ uint8_t ContainerID[16]; }; /** \ingroup libusb_asyncio * Setup packet for control transfers. */ struct libusb_control_setup { /** Request type. Bits 0:4 determine recipient, see * \ref libusb_request_recipient. Bits 5:6 determine type, see * \ref libusb_request_type. Bit 7 determines data transfer direction, see * \ref libusb_endpoint_direction. */ uint8_t bmRequestType; /** Request. If the type bits of bmRequestType are equal to * \ref libusb_request_type::LIBUSB_REQUEST_TYPE_STANDARD * "LIBUSB_REQUEST_TYPE_STANDARD" then this field refers to * \ref libusb_standard_request. For other cases, use of this field is * application-specific. */ uint8_t bRequest; /** Value. Varies according to request */ uint16_t wValue; /** Index. Varies according to request, typically used to pass an index * or offset */ uint16_t wIndex; /** Number of bytes to transfer */ uint16_t wLength; }; #define LIBUSB_CONTROL_SETUP_SIZE (sizeof(struct libusb_control_setup)) /* libusb */ struct libusb_context; struct libusb_device; struct libusb_device_handle; /** \ingroup libusb_lib * Structure providing the version of the libusb runtime */ struct libusb_version { /** Library major version. */ const uint16_t major; /** Library minor version. */ const uint16_t minor; /** Library micro version. */ const uint16_t micro; /** Library nano version. */ const uint16_t nano; /** Library release candidate suffix string, e.g. "-rc4". */ const char *rc; /** For ABI compatibility only. */ const char* describe; }; /** \ingroup libusb_lib * Structure representing a libusb session. The concept of individual libusb * sessions allows for your program to use two libraries (or dynamically * load two modules) which both independently use libusb. This will prevent * interference between the individual libusb users - for example * libusb_set_option() will not affect the other user of the library, and * libusb_exit() will not destroy resources that the other user is still * using. * * Sessions are created by libusb_init() and destroyed through libusb_exit(). * If your application is guaranteed to only ever include a single libusb * user (i.e. you), you do not have to worry about contexts: pass NULL in * every function call where a context is required. The default context * will be used. * * For more information, see \ref libusb_contexts. */ typedef struct libusb_context libusb_context; /** \ingroup libusb_dev * Structure representing a USB device detected on the system. This is an * opaque type for which you are only ever provided with a pointer, usually * originating from libusb_get_device_list(). * * Certain operations can be performed on a device, but in order to do any * I/O you will have to first obtain a device handle using libusb_open(). * * Devices are reference counted with libusb_ref_device() and * libusb_unref_device(), and are freed when the reference count reaches 0. * New devices presented by libusb_get_device_list() have a reference count of * 1, and libusb_free_device_list() can optionally decrease the reference count * on all devices in the list. libusb_open() adds another reference which is * later destroyed by libusb_close(). */ typedef struct libusb_device libusb_device; /** \ingroup libusb_dev * Structure representing a handle on a USB device. This is an opaque type for * which you are only ever provided with a pointer, usually originating from * libusb_open(). * * A device handle is used to perform I/O and other operations. When finished * with a device handle, you should call libusb_close(). */ typedef struct libusb_device_handle libusb_device_handle; /** \ingroup libusb_dev * Speed codes. Indicates the speed at which the device is operating. */ enum libusb_speed { /** The OS doesn't report or know the device speed. */ LIBUSB_SPEED_UNKNOWN = 0, /** The device is operating at low speed (1.5MBit/s). */ LIBUSB_SPEED_LOW = 1, /** The device is operating at full speed (12MBit/s). */ LIBUSB_SPEED_FULL = 2, /** The device is operating at high speed (480MBit/s). */ LIBUSB_SPEED_HIGH = 3, /** The device is operating at super speed (5000MBit/s). */ LIBUSB_SPEED_SUPER = 4, /** The device is operating at super speed plus (10000MBit/s). */ LIBUSB_SPEED_SUPER_PLUS = 5, }; /** \ingroup libusb_dev * Supported speeds (wSpeedSupported) bitfield. Indicates what * speeds the device supports. */ enum libusb_supported_speed { /** Low speed operation supported (1.5MBit/s). */ LIBUSB_LOW_SPEED_OPERATION = 1, /** Full speed operation supported (12MBit/s). */ LIBUSB_FULL_SPEED_OPERATION = 2, /** High speed operation supported (480MBit/s). */ LIBUSB_HIGH_SPEED_OPERATION = 4, /** Superspeed operation supported (5000MBit/s). */ LIBUSB_SUPER_SPEED_OPERATION = 8, }; /** \ingroup libusb_dev * Masks for the bits of the * \ref libusb_usb_2_0_extension_descriptor::bmAttributes "bmAttributes" field * of the USB 2.0 Extension descriptor. */ enum libusb_usb_2_0_extension_attributes { /** Supports Link Power Management (LPM) */ LIBUSB_BM_LPM_SUPPORT = 2, }; /** \ingroup libusb_dev * Masks for the bits of the * \ref libusb_ss_usb_device_capability_descriptor::bmAttributes "bmAttributes" field * field of the SuperSpeed USB Device Capability descriptor. */ enum libusb_ss_usb_device_capability_attributes { /** Supports Latency Tolerance Messages (LTM) */ LIBUSB_BM_LTM_SUPPORT = 2, }; /** \ingroup libusb_dev * USB capability types */ enum libusb_bos_type { /** Wireless USB device capability */ LIBUSB_BT_WIRELESS_USB_DEVICE_CAPABILITY = 1, /** USB 2.0 extensions */ LIBUSB_BT_USB_2_0_EXTENSION = 2, /** SuperSpeed USB device capability */ LIBUSB_BT_SS_USB_DEVICE_CAPABILITY = 3, /** Container ID type */ LIBUSB_BT_CONTAINER_ID = 4, }; /** \ingroup libusb_misc * Error codes. Most libusb functions return 0 on success or one of these * codes on failure. * You can call libusb_error_name() to retrieve a string representation of an * error code or libusb_strerror() to get an end-user suitable description of * an error code. */ enum libusb_error { /** Success (no error) */ LIBUSB_SUCCESS = 0, /** Input/output error */ LIBUSB_ERROR_IO = -1, /** Invalid parameter */ LIBUSB_ERROR_INVALID_PARAM = -2, /** Access denied (insufficient permissions) */ LIBUSB_ERROR_ACCESS = -3, /** No such device (it may have been disconnected) */ LIBUSB_ERROR_NO_DEVICE = -4, /** Entity not found */ LIBUSB_ERROR_NOT_FOUND = -5, /** Resource busy */ LIBUSB_ERROR_BUSY = -6, /** Operation timed out */ LIBUSB_ERROR_TIMEOUT = -7, /** Overflow */ LIBUSB_ERROR_OVERFLOW = -8, /** Pipe error */ LIBUSB_ERROR_PIPE = -9, /** System call interrupted (perhaps due to signal) */ LIBUSB_ERROR_INTERRUPTED = -10, /** Insufficient memory */ LIBUSB_ERROR_NO_MEM = -11, /** Operation not supported or unimplemented on this platform */ LIBUSB_ERROR_NOT_SUPPORTED = -12, /* NB: Remember to update LIBUSB_ERROR_COUNT below as well as the message strings in strerror.c when adding new error codes here. */ /** Other error */ LIBUSB_ERROR_OTHER = -99, }; /* Total number of error codes in enum libusb_error */ #define LIBUSB_ERROR_COUNT 14 /** \ingroup libusb_asyncio * Transfer status codes */ enum libusb_transfer_status { /** Transfer completed without error. Note that this does not indicate * that the entire amount of requested data was transferred. */ LIBUSB_TRANSFER_COMPLETED, /** Transfer failed */ LIBUSB_TRANSFER_ERROR, /** Transfer timed out */ LIBUSB_TRANSFER_TIMED_OUT, /** Transfer was cancelled */ LIBUSB_TRANSFER_CANCELLED, /** For bulk/interrupt endpoints: halt condition detected (endpoint * stalled). For control endpoints: control request not supported. */ LIBUSB_TRANSFER_STALL, /** Device was disconnected */ LIBUSB_TRANSFER_NO_DEVICE, /** Device sent more data than requested */ LIBUSB_TRANSFER_OVERFLOW, /* NB! Remember to update libusb_error_name() when adding new status codes here. */ }; /** \ingroup libusb_asyncio * libusb_transfer.flags values */ enum libusb_transfer_flags { /** Report short frames as errors */ LIBUSB_TRANSFER_SHORT_NOT_OK = 1<<0, /** Automatically free() transfer buffer during libusb_free_transfer(). * Note that buffers allocated with libusb_dev_mem_alloc() should not * be attempted freed in this way, since free() is not an appropriate * way to release such memory. */ LIBUSB_TRANSFER_FREE_BUFFER = 1<<1, /** Automatically call libusb_free_transfer() after callback returns. * If this flag is set, it is illegal to call libusb_free_transfer() * from your transfer callback, as this will result in a double-free * when this flag is acted upon. */ LIBUSB_TRANSFER_FREE_TRANSFER = 1<<2, /** Terminate transfers that are a multiple of the endpoint's * wMaxPacketSize with an extra zero length packet. This is useful * when a device protocol mandates that each logical request is * terminated by an incomplete packet (i.e. the logical requests are * not separated by other means). * * This flag only affects host-to-device transfers to bulk and interrupt * endpoints. In other situations, it is ignored. * * This flag only affects transfers with a length that is a multiple of * the endpoint's wMaxPacketSize. On transfers of other lengths, this * flag has no effect. Therefore, if you are working with a device that * needs a ZLP whenever the end of the logical request falls on a packet * boundary, then it is sensible to set this flag on every * transfer (you do not have to worry about only setting it on transfers * that end on the boundary). * * This flag is currently only supported on Linux. * On other systems, libusb_submit_transfer() will return * LIBUSB_ERROR_NOT_SUPPORTED for every transfer where this flag is set. * * Available since libusb-1.0.9. */ LIBUSB_TRANSFER_ADD_ZERO_PACKET = 1 << 3, }; /** \ingroup libusb_asyncio * Isochronous packet descriptor. */ struct libusb_iso_packet_descriptor { /** Length of data to request in this packet */ unsigned int length; /** Amount of data that was actually transferred */ unsigned int actual_length; /** Status code for this packet */ enum libusb_transfer_status status; }; struct libusb_transfer; /** \ingroup libusb_asyncio * Asynchronous transfer callback function type. When submitting asynchronous * transfers, you pass a pointer to a callback function of this type via the * \ref libusb_transfer::callback "callback" member of the libusb_transfer * structure. libusb will call this function later, when the transfer has * completed or failed. See \ref libusb_asyncio for more information. * \param transfer The libusb_transfer struct the callback function is being * notified about. */ typedef void (LIBUSB_CALL *libusb_transfer_cb_fn)(struct libusb_transfer *transfer); /** \ingroup libusb_asyncio * The generic USB transfer structure. The user populates this structure and * then submits it in order to request a transfer. After the transfer has * completed, the library populates the transfer with the results and passes * it back to the user. */ struct libusb_transfer { /** Handle of the device that this transfer will be submitted to */ libusb_device_handle *dev_handle; /** A bitwise OR combination of \ref libusb_transfer_flags. */ uint8_t flags; /** Address of the endpoint where this transfer will be sent. */ unsigned char endpoint; /** Type of the endpoint from \ref libusb_transfer_type */ unsigned char type; /** Timeout for this transfer in milliseconds. A value of 0 indicates no * timeout. */ unsigned int timeout; /** The status of the transfer. Read-only, and only for use within * transfer callback function. * * If this is an isochronous transfer, this field may read COMPLETED even * if there were errors in the frames. Use the * \ref libusb_iso_packet_descriptor::status "status" field in each packet * to determine if errors occurred. */ enum libusb_transfer_status status; /** Length of the data buffer */ int length; /** Actual length of data that was transferred. Read-only, and only for * use within transfer callback function. Not valid for isochronous * endpoint transfers. */ int actual_length; /** Callback function. This will be invoked when the transfer completes, * fails, or is cancelled. */ libusb_transfer_cb_fn callback; /** User context data to pass to the callback function. */ void *user_data; /** Data buffer */ unsigned char *buffer; /** Number of isochronous packets. Only used for I/O with isochronous * endpoints. */ int num_iso_packets; /** Isochronous packet descriptors, for isochronous transfers only. */ struct libusb_iso_packet_descriptor iso_packet_desc[ZERO_SIZED_ARRAY]; }; /** \ingroup libusb_misc * Capabilities supported by an instance of libusb on the current running * platform. Test if the loaded library supports a given capability by calling * \ref libusb_has_capability(). */ enum libusb_capability { /** The libusb_has_capability() API is available. */ LIBUSB_CAP_HAS_CAPABILITY = 0x0000, /** Hotplug support is available on this platform. */ LIBUSB_CAP_HAS_HOTPLUG = 0x0001, /** The library can access HID devices without requiring user intervention. * Note that before being able to actually access an HID device, you may * still have to call additional libusb functions such as * \ref libusb_detach_kernel_driver(). */ LIBUSB_CAP_HAS_HID_ACCESS = 0x0100, /** The library supports detaching of the default USB driver, using * \ref libusb_detach_kernel_driver(), if one is set by the OS kernel */ LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER = 0x0101 }; /** \ingroup libusb_lib * Log message levels. * - LIBUSB_LOG_LEVEL_NONE (0) : no messages ever printed by the library (default) * - LIBUSB_LOG_LEVEL_ERROR (1) : error messages are printed to stderr * - LIBUSB_LOG_LEVEL_WARNING (2) : warning and error messages are printed to stderr * - LIBUSB_LOG_LEVEL_INFO (3) : informational messages are printed to stderr * - LIBUSB_LOG_LEVEL_DEBUG (4) : debug and informational messages are printed to stderr */ enum libusb_log_level { LIBUSB_LOG_LEVEL_NONE = 0, LIBUSB_LOG_LEVEL_ERROR = 1, LIBUSB_LOG_LEVEL_WARNING = 2, LIBUSB_LOG_LEVEL_INFO = 3, LIBUSB_LOG_LEVEL_DEBUG = 4, }; int LIBUSB_CALL libusb_init(libusb_context **ctx); void LIBUSB_CALL libusb_exit(libusb_context *ctx); LIBUSB_DEPRECATED_FOR(libusb_set_option) void LIBUSB_CALL libusb_set_debug(libusb_context *ctx, int level); const struct libusb_version * LIBUSB_CALL libusb_get_version(void); int LIBUSB_CALL libusb_has_capability(uint32_t capability); const char * LIBUSB_CALL libusb_error_name(int errcode); int LIBUSB_CALL libusb_setlocale(const char *locale); const char * LIBUSB_CALL libusb_strerror(enum libusb_error errcode); ssize_t LIBUSB_CALL libusb_get_device_list(libusb_context *ctx, libusb_device ***list); void LIBUSB_CALL libusb_free_device_list(libusb_device **list, int unref_devices); libusb_device * LIBUSB_CALL libusb_ref_device(libusb_device *dev); void LIBUSB_CALL libusb_unref_device(libusb_device *dev); int LIBUSB_CALL libusb_get_configuration(libusb_device_handle *dev, int *config); int LIBUSB_CALL libusb_get_device_descriptor(libusb_device *dev, struct libusb_device_descriptor *desc); int LIBUSB_CALL libusb_get_active_config_descriptor(libusb_device *dev, struct libusb_config_descriptor **config); int LIBUSB_CALL libusb_get_config_descriptor(libusb_device *dev, uint8_t config_index, struct libusb_config_descriptor **config); int LIBUSB_CALL libusb_get_config_descriptor_by_value(libusb_device *dev, uint8_t bConfigurationValue, struct libusb_config_descriptor **config); void LIBUSB_CALL libusb_free_config_descriptor( struct libusb_config_descriptor *config); int LIBUSB_CALL libusb_get_ss_endpoint_companion_descriptor( struct libusb_context *ctx, const struct libusb_endpoint_descriptor *endpoint, struct libusb_ss_endpoint_companion_descriptor **ep_comp); void LIBUSB_CALL libusb_free_ss_endpoint_companion_descriptor( struct libusb_ss_endpoint_companion_descriptor *ep_comp); int LIBUSB_CALL libusb_get_bos_descriptor(libusb_device_handle *dev_handle, struct libusb_bos_descriptor **bos); void LIBUSB_CALL libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos); int LIBUSB_CALL libusb_get_usb_2_0_extension_descriptor( struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_usb_2_0_extension_descriptor **usb_2_0_extension); void LIBUSB_CALL libusb_free_usb_2_0_extension_descriptor( struct libusb_usb_2_0_extension_descriptor *usb_2_0_extension); int LIBUSB_CALL libusb_get_ss_usb_device_capability_descriptor( struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_ss_usb_device_capability_descriptor **ss_usb_device_cap); void LIBUSB_CALL libusb_free_ss_usb_device_capability_descriptor( struct libusb_ss_usb_device_capability_descriptor *ss_usb_device_cap); int LIBUSB_CALL libusb_get_container_id_descriptor(struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_container_id_descriptor **container_id); void LIBUSB_CALL libusb_free_container_id_descriptor( struct libusb_container_id_descriptor *container_id); uint8_t LIBUSB_CALL libusb_get_bus_number(libusb_device *dev); uint8_t LIBUSB_CALL libusb_get_port_number(libusb_device *dev); int LIBUSB_CALL libusb_get_port_numbers(libusb_device *dev, uint8_t* port_numbers, int port_numbers_len); LIBUSB_DEPRECATED_FOR(libusb_get_port_numbers) int LIBUSB_CALL libusb_get_port_path(libusb_context *ctx, libusb_device *dev, uint8_t* path, uint8_t path_length); libusb_device * LIBUSB_CALL libusb_get_parent(libusb_device *dev); uint8_t LIBUSB_CALL libusb_get_device_address(libusb_device *dev); int LIBUSB_CALL libusb_get_device_speed(libusb_device *dev); int LIBUSB_CALL libusb_get_max_packet_size(libusb_device *dev, unsigned char endpoint); int LIBUSB_CALL libusb_get_max_iso_packet_size(libusb_device *dev, unsigned char endpoint); int LIBUSB_CALL libusb_open(libusb_device *dev, libusb_device_handle **dev_handle); void LIBUSB_CALL libusb_close(libusb_device_handle *dev_handle); libusb_device * LIBUSB_CALL libusb_get_device(libusb_device_handle *dev_handle); int LIBUSB_CALL libusb_set_configuration(libusb_device_handle *dev_handle, int configuration); int LIBUSB_CALL libusb_claim_interface(libusb_device_handle *dev_handle, int interface_number); int LIBUSB_CALL libusb_release_interface(libusb_device_handle *dev_handle, int interface_number); libusb_device_handle * LIBUSB_CALL libusb_open_device_with_vid_pid( libusb_context *ctx, uint16_t vendor_id, uint16_t product_id); int LIBUSB_CALL libusb_set_interface_alt_setting(libusb_device_handle *dev_handle, int interface_number, int alternate_setting); int LIBUSB_CALL libusb_clear_halt(libusb_device_handle *dev_handle, unsigned char endpoint); int LIBUSB_CALL libusb_reset_device(libusb_device_handle *dev_handle); int LIBUSB_CALL libusb_alloc_streams(libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints, int num_endpoints); int LIBUSB_CALL libusb_free_streams(libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints); unsigned char * LIBUSB_CALL libusb_dev_mem_alloc(libusb_device_handle *dev_handle, size_t length); int LIBUSB_CALL libusb_dev_mem_free(libusb_device_handle *dev_handle, unsigned char *buffer, size_t length); int LIBUSB_CALL libusb_kernel_driver_active(libusb_device_handle *dev_handle, int interface_number); int LIBUSB_CALL libusb_detach_kernel_driver(libusb_device_handle *dev_handle, int interface_number); int LIBUSB_CALL libusb_attach_kernel_driver(libusb_device_handle *dev_handle, int interface_number); int LIBUSB_CALL libusb_set_auto_detach_kernel_driver( libusb_device_handle *dev_handle, int enable); /* async I/O */ /** \ingroup libusb_asyncio * Get the data section of a control transfer. This convenience function is here * to remind you that the data does not start until 8 bytes into the actual * buffer, as the setup packet comes first. * * Calling this function only makes sense from a transfer callback function, * or situations where you have already allocated a suitably sized buffer at * transfer->buffer. * * \param transfer a transfer * \returns pointer to the first byte of the data section */ static inline unsigned char *libusb_control_transfer_get_data( struct libusb_transfer *transfer) { return transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; } /** \ingroup libusb_asyncio * Get the control setup packet of a control transfer. This convenience * function is here to remind you that the control setup occupies the first * 8 bytes of the transfer data buffer. * * Calling this function only makes sense from a transfer callback function, * or situations where you have already allocated a suitably sized buffer at * transfer->buffer. * * \param transfer a transfer * \returns a casted pointer to the start of the transfer data buffer */ static inline struct libusb_control_setup *libusb_control_transfer_get_setup( struct libusb_transfer *transfer) { return (struct libusb_control_setup *)(void *) transfer->buffer; } /** \ingroup libusb_asyncio * Helper function to populate the setup packet (first 8 bytes of the data * buffer) for a control transfer. The wIndex, wValue and wLength values should * be given in host-endian byte order. * * \param buffer buffer to output the setup packet into * This pointer must be aligned to at least 2 bytes boundary. * \param bmRequestType see the * \ref libusb_control_setup::bmRequestType "bmRequestType" field of * \ref libusb_control_setup * \param bRequest see the * \ref libusb_control_setup::bRequest "bRequest" field of * \ref libusb_control_setup * \param wValue see the * \ref libusb_control_setup::wValue "wValue" field of * \ref libusb_control_setup * \param wIndex see the * \ref libusb_control_setup::wIndex "wIndex" field of * \ref libusb_control_setup * \param wLength see the * \ref libusb_control_setup::wLength "wLength" field of * \ref libusb_control_setup */ static inline void libusb_fill_control_setup(unsigned char *buffer, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength) { struct libusb_control_setup *setup = (struct libusb_control_setup *)(void *) buffer; setup->bmRequestType = bmRequestType; setup->bRequest = bRequest; setup->wValue = libusb_cpu_to_le16(wValue); setup->wIndex = libusb_cpu_to_le16(wIndex); setup->wLength = libusb_cpu_to_le16(wLength); } struct libusb_transfer * LIBUSB_CALL libusb_alloc_transfer(int iso_packets); int LIBUSB_CALL libusb_submit_transfer(struct libusb_transfer *transfer); int LIBUSB_CALL libusb_cancel_transfer(struct libusb_transfer *transfer); void LIBUSB_CALL libusb_free_transfer(struct libusb_transfer *transfer); void LIBUSB_CALL libusb_transfer_set_stream_id( struct libusb_transfer *transfer, uint32_t stream_id); uint32_t LIBUSB_CALL libusb_transfer_get_stream_id( struct libusb_transfer *transfer); /** \ingroup libusb_asyncio * Helper function to populate the required \ref libusb_transfer fields * for a control transfer. * * If you pass a transfer buffer to this function, the first 8 bytes will * be interpreted as a control setup packet, and the wLength field will be * used to automatically populate the \ref libusb_transfer::length "length" * field of the transfer. Therefore the recommended approach is: * -# Allocate a suitably sized data buffer (including space for control setup) * -# Call libusb_fill_control_setup() * -# If this is a host-to-device transfer with a data stage, put the data * in place after the setup packet * -# Call this function * -# Call libusb_submit_transfer() * * It is also legal to pass a NULL buffer to this function, in which case this * function will not attempt to populate the length field. Remember that you * must then populate the buffer and length fields later. * * \param transfer the transfer to populate * \param dev_handle handle of the device that will handle the transfer * \param buffer data buffer. If provided, this function will interpret the * first 8 bytes as a setup packet and infer the transfer length from that. * This pointer must be aligned to at least 2 bytes boundary. * \param callback callback function to be invoked on transfer completion * \param user_data user data to pass to callback function * \param timeout timeout for the transfer in milliseconds */ static inline void libusb_fill_control_transfer( struct libusb_transfer *transfer, libusb_device_handle *dev_handle, unsigned char *buffer, libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) { struct libusb_control_setup *setup = (struct libusb_control_setup *)(void *) buffer; transfer->dev_handle = dev_handle; transfer->endpoint = 0; transfer->type = LIBUSB_TRANSFER_TYPE_CONTROL; transfer->timeout = timeout; transfer->buffer = buffer; if (setup) transfer->length = (int) (LIBUSB_CONTROL_SETUP_SIZE + libusb_le16_to_cpu(setup->wLength)); transfer->user_data = user_data; transfer->callback = callback; } /** \ingroup libusb_asyncio * Helper function to populate the required \ref libusb_transfer fields * for a bulk transfer. * * \param transfer the transfer to populate * \param dev_handle handle of the device that will handle the transfer * \param endpoint address of the endpoint where this transfer will be sent * \param buffer data buffer * \param length length of data buffer * \param callback callback function to be invoked on transfer completion * \param user_data user data to pass to callback function * \param timeout timeout for the transfer in milliseconds */ static inline void libusb_fill_bulk_transfer(struct libusb_transfer *transfer, libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *buffer, int length, libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) { transfer->dev_handle = dev_handle; transfer->endpoint = endpoint; transfer->type = LIBUSB_TRANSFER_TYPE_BULK; transfer->timeout = timeout; transfer->buffer = buffer; transfer->length = length; transfer->user_data = user_data; transfer->callback = callback; } /** \ingroup libusb_asyncio * Helper function to populate the required \ref libusb_transfer fields * for a bulk transfer using bulk streams. * * Since version 1.0.19, \ref LIBUSB_API_VERSION >= 0x01000103 * * \param transfer the transfer to populate * \param dev_handle handle of the device that will handle the transfer * \param endpoint address of the endpoint where this transfer will be sent * \param stream_id bulk stream id for this transfer * \param buffer data buffer * \param length length of data buffer * \param callback callback function to be invoked on transfer completion * \param user_data user data to pass to callback function * \param timeout timeout for the transfer in milliseconds */ static inline void libusb_fill_bulk_stream_transfer( struct libusb_transfer *transfer, libusb_device_handle *dev_handle, unsigned char endpoint, uint32_t stream_id, unsigned char *buffer, int length, libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) { libusb_fill_bulk_transfer(transfer, dev_handle, endpoint, buffer, length, callback, user_data, timeout); transfer->type = LIBUSB_TRANSFER_TYPE_BULK_STREAM; libusb_transfer_set_stream_id(transfer, stream_id); } /** \ingroup libusb_asyncio * Helper function to populate the required \ref libusb_transfer fields * for an interrupt transfer. * * \param transfer the transfer to populate * \param dev_handle handle of the device that will handle the transfer * \param endpoint address of the endpoint where this transfer will be sent * \param buffer data buffer * \param length length of data buffer * \param callback callback function to be invoked on transfer completion * \param user_data user data to pass to callback function * \param timeout timeout for the transfer in milliseconds */ static inline void libusb_fill_interrupt_transfer( struct libusb_transfer *transfer, libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *buffer, int length, libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) { transfer->dev_handle = dev_handle; transfer->endpoint = endpoint; transfer->type = LIBUSB_TRANSFER_TYPE_INTERRUPT; transfer->timeout = timeout; transfer->buffer = buffer; transfer->length = length; transfer->user_data = user_data; transfer->callback = callback; } /** \ingroup libusb_asyncio * Helper function to populate the required \ref libusb_transfer fields * for an isochronous transfer. * * \param transfer the transfer to populate * \param dev_handle handle of the device that will handle the transfer * \param endpoint address of the endpoint where this transfer will be sent * \param buffer data buffer * \param length length of data buffer * \param num_iso_packets the number of isochronous packets * \param callback callback function to be invoked on transfer completion * \param user_data user data to pass to callback function * \param timeout timeout for the transfer in milliseconds */ static inline void libusb_fill_iso_transfer(struct libusb_transfer *transfer, libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *buffer, int length, int num_iso_packets, libusb_transfer_cb_fn callback, void *user_data, unsigned int timeout) { transfer->dev_handle = dev_handle; transfer->endpoint = endpoint; transfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; transfer->timeout = timeout; transfer->buffer = buffer; transfer->length = length; transfer->num_iso_packets = num_iso_packets; transfer->user_data = user_data; transfer->callback = callback; } /** \ingroup libusb_asyncio * Convenience function to set the length of all packets in an isochronous * transfer, based on the num_iso_packets field in the transfer structure. * * \param transfer a transfer * \param length the length to set in each isochronous packet descriptor * \see libusb_get_max_packet_size() */ static inline void libusb_set_iso_packet_lengths( struct libusb_transfer *transfer, unsigned int length) { int i; for (i = 0; i < transfer->num_iso_packets; i++) transfer->iso_packet_desc[i].length = length; } /** \ingroup libusb_asyncio * Convenience function to locate the position of an isochronous packet * within the buffer of an isochronous transfer. * * This is a thorough function which loops through all preceding packets, * accumulating their lengths to find the position of the specified packet. * Typically you will assign equal lengths to each packet in the transfer, * and hence the above method is sub-optimal. You may wish to use * libusb_get_iso_packet_buffer_simple() instead. * * \param transfer a transfer * \param packet the packet to return the address of * \returns the base address of the packet buffer inside the transfer buffer, * or NULL if the packet does not exist. * \see libusb_get_iso_packet_buffer_simple() */ static inline unsigned char *libusb_get_iso_packet_buffer( struct libusb_transfer *transfer, unsigned int packet) { int i; size_t offset = 0; int _packet; /* oops..slight bug in the API. packet is an unsigned int, but we use * signed integers almost everywhere else. range-check and convert to * signed to avoid compiler warnings. FIXME for libusb-2. */ if (packet > INT_MAX) return NULL; _packet = (int) packet; if (_packet >= transfer->num_iso_packets) return NULL; for (i = 0; i < _packet; i++) offset += transfer->iso_packet_desc[i].length; return transfer->buffer + offset; } /** \ingroup libusb_asyncio * Convenience function to locate the position of an isochronous packet * within the buffer of an isochronous transfer, for transfers where each * packet is of identical size. * * This function relies on the assumption that every packet within the transfer * is of identical size to the first packet. Calculating the location of * the packet buffer is then just a simple calculation: * buffer + (packet_size * packet) * * Do not use this function on transfers other than those that have identical * packet lengths for each packet. * * \param transfer a transfer * \param packet the packet to return the address of * \returns the base address of the packet buffer inside the transfer buffer, * or NULL if the packet does not exist. * \see libusb_get_iso_packet_buffer() */ static inline unsigned char *libusb_get_iso_packet_buffer_simple( struct libusb_transfer *transfer, unsigned int packet) { int _packet; /* oops..slight bug in the API. packet is an unsigned int, but we use * signed integers almost everywhere else. range-check and convert to * signed to avoid compiler warnings. FIXME for libusb-2. */ if (packet > INT_MAX) return NULL; _packet = (int) packet; if (_packet >= transfer->num_iso_packets) return NULL; return transfer->buffer + ((int) transfer->iso_packet_desc[0].length * _packet); } /* sync I/O */ int LIBUSB_CALL libusb_control_transfer(libusb_device_handle *dev_handle, uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, unsigned char *data, uint16_t wLength, unsigned int timeout); int LIBUSB_CALL libusb_bulk_transfer(libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *data, int length, int *actual_length, unsigned int timeout); int LIBUSB_CALL libusb_interrupt_transfer(libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *data, int length, int *actual_length, unsigned int timeout); /** \ingroup libusb_desc * Retrieve a descriptor from the default control pipe. * This is a convenience function which formulates the appropriate control * message to retrieve the descriptor. * * \param dev_handle a device handle * \param desc_type the descriptor type, see \ref libusb_descriptor_type * \param desc_index the index of the descriptor to retrieve * \param data output buffer for descriptor * \param length size of data buffer * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure */ static inline int libusb_get_descriptor(libusb_device_handle *dev_handle, uint8_t desc_type, uint8_t desc_index, unsigned char *data, int length) { return libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_IN, LIBUSB_REQUEST_GET_DESCRIPTOR, (uint16_t) ((desc_type << 8) | desc_index), 0, data, (uint16_t) length, 1000); } /** \ingroup libusb_desc * Retrieve a descriptor from a device. * This is a convenience function which formulates the appropriate control * message to retrieve the descriptor. The string returned is Unicode, as * detailed in the USB specifications. * * \param dev_handle a device handle * \param desc_index the index of the descriptor to retrieve * \param langid the language ID for the string descriptor * \param data output buffer for descriptor * \param length size of data buffer * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure * \see libusb_get_string_descriptor_ascii() */ static inline int libusb_get_string_descriptor(libusb_device_handle *dev_handle, uint8_t desc_index, uint16_t langid, unsigned char *data, int length) { return libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_IN, LIBUSB_REQUEST_GET_DESCRIPTOR, (uint16_t)((LIBUSB_DT_STRING << 8) | desc_index), langid, data, (uint16_t) length, 1000); } int LIBUSB_CALL libusb_get_string_descriptor_ascii(libusb_device_handle *dev_handle, uint8_t desc_index, unsigned char *data, int length); /* polling and timeouts */ int LIBUSB_CALL libusb_try_lock_events(libusb_context *ctx); void LIBUSB_CALL libusb_lock_events(libusb_context *ctx); void LIBUSB_CALL libusb_unlock_events(libusb_context *ctx); int LIBUSB_CALL libusb_event_handling_ok(libusb_context *ctx); int LIBUSB_CALL libusb_event_handler_active(libusb_context *ctx); void LIBUSB_CALL libusb_interrupt_event_handler(libusb_context *ctx); void LIBUSB_CALL libusb_lock_event_waiters(libusb_context *ctx); void LIBUSB_CALL libusb_unlock_event_waiters(libusb_context *ctx); int LIBUSB_CALL libusb_wait_for_event(libusb_context *ctx, struct timeval *tv); int LIBUSB_CALL libusb_handle_events_timeout(libusb_context *ctx, struct timeval *tv); int LIBUSB_CALL libusb_handle_events_timeout_completed(libusb_context *ctx, struct timeval *tv, int *completed); int LIBUSB_CALL libusb_handle_events(libusb_context *ctx); int LIBUSB_CALL libusb_handle_events_completed(libusb_context *ctx, int *completed); int LIBUSB_CALL libusb_handle_events_locked(libusb_context *ctx, struct timeval *tv); int LIBUSB_CALL libusb_pollfds_handle_timeouts(libusb_context *ctx); int LIBUSB_CALL libusb_get_next_timeout(libusb_context *ctx, struct timeval *tv); /** \ingroup libusb_poll * File descriptor for polling */ struct libusb_pollfd { /** Numeric file descriptor */ int fd; /** Event flags to poll for from . POLLIN indicates that you * should monitor this file descriptor for becoming ready to read from, * and POLLOUT indicates that you should monitor this file descriptor for * nonblocking write readiness. */ short events; }; /** \ingroup libusb_poll * Callback function, invoked when a new file descriptor should be added * to the set of file descriptors monitored for events. * \param fd the new file descriptor * \param events events to monitor for, see \ref libusb_pollfd for a * description * \param user_data User data pointer specified in * libusb_set_pollfd_notifiers() call * \see libusb_set_pollfd_notifiers() */ typedef void (LIBUSB_CALL *libusb_pollfd_added_cb)(int fd, short events, void *user_data); /** \ingroup libusb_poll * Callback function, invoked when a file descriptor should be removed from * the set of file descriptors being monitored for events. After returning * from this callback, do not use that file descriptor again. * \param fd the file descriptor to stop monitoring * \param user_data User data pointer specified in * libusb_set_pollfd_notifiers() call * \see libusb_set_pollfd_notifiers() */ typedef void (LIBUSB_CALL *libusb_pollfd_removed_cb)(int fd, void *user_data); const struct libusb_pollfd ** LIBUSB_CALL libusb_get_pollfds( libusb_context *ctx); void LIBUSB_CALL libusb_free_pollfds(const struct libusb_pollfd **pollfds); void LIBUSB_CALL libusb_set_pollfd_notifiers(libusb_context *ctx, libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, void *user_data); /** \ingroup libusb_hotplug * Callback handle. * * Callbacks handles are generated by libusb_hotplug_register_callback() * and can be used to deregister callbacks. Callback handles are unique * per libusb_context and it is safe to call libusb_hotplug_deregister_callback() * on an already deregisted callback. * * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102 * * For more information, see \ref libusb_hotplug. */ typedef int libusb_hotplug_callback_handle; /** \ingroup libusb_hotplug * * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102 * * Flags for hotplug events */ typedef enum { /** Default value when not using any flags. */ LIBUSB_HOTPLUG_NO_FLAGS = 0, /** Arm the callback and fire it for all matching currently attached devices. */ LIBUSB_HOTPLUG_ENUMERATE = 1<<0, } libusb_hotplug_flag; /** \ingroup libusb_hotplug * * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102 * * Hotplug events */ typedef enum { /** A device has been plugged in and is ready to use */ LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED = 0x01, /** A device has left and is no longer available. * It is the user's responsibility to call libusb_close on any handle associated with a disconnected device. * It is safe to call libusb_get_device_descriptor on a device that has left */ LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT = 0x02, } libusb_hotplug_event; /** \ingroup libusb_hotplug * Wildcard matching for hotplug events */ #define LIBUSB_HOTPLUG_MATCH_ANY -1 /** \ingroup libusb_hotplug * Hotplug callback function type. When requesting hotplug event notifications, * you pass a pointer to a callback function of this type. * * This callback may be called by an internal event thread and as such it is * recommended the callback do minimal processing before returning. * * libusb will call this function later, when a matching event had happened on * a matching device. See \ref libusb_hotplug for more information. * * It is safe to call either libusb_hotplug_register_callback() or * libusb_hotplug_deregister_callback() from within a callback function. * * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102 * * \param ctx context of this notification * \param device libusb_device this event occurred on * \param event event that occurred * \param user_data user data provided when this callback was registered * \returns bool whether this callback is finished processing events. * returning 1 will cause this callback to be deregistered */ typedef int (LIBUSB_CALL *libusb_hotplug_callback_fn)(libusb_context *ctx, libusb_device *device, libusb_hotplug_event event, void *user_data); /** \ingroup libusb_hotplug * Register a hotplug callback function * * Register a callback with the libusb_context. The callback will fire * when a matching event occurs on a matching device. The callback is * armed until either it is deregistered with libusb_hotplug_deregister_callback() * or the supplied callback returns 1 to indicate it is finished processing events. * * If the \ref LIBUSB_HOTPLUG_ENUMERATE is passed the callback will be * called with a \ref LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED for all devices * already plugged into the machine. Note that libusb modifies its internal * device list from a separate thread, while calling hotplug callbacks from * libusb_handle_events(), so it is possible for a device to already be present * on, or removed from, its internal device list, while the hotplug callbacks * still need to be dispatched. This means that when using \ref * LIBUSB_HOTPLUG_ENUMERATE, your callback may be called twice for the arrival * of the same device, once from libusb_hotplug_register_callback() and once * from libusb_handle_events(); and/or your callback may be called for the * removal of a device for which an arrived call was never made. * * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102 * * \param[in] ctx context to register this callback with * \param[in] events bitwise or of events that will trigger this callback. See \ref * libusb_hotplug_event * \param[in] flags hotplug callback flags. See \ref libusb_hotplug_flag * \param[in] vendor_id the vendor id to match or \ref LIBUSB_HOTPLUG_MATCH_ANY * \param[in] product_id the product id to match or \ref LIBUSB_HOTPLUG_MATCH_ANY * \param[in] dev_class the device class to match or \ref LIBUSB_HOTPLUG_MATCH_ANY * \param[in] cb_fn the function to be invoked on a matching event/device * \param[in] user_data user data to pass to the callback function * \param[out] callback_handle pointer to store the handle of the allocated callback (can be NULL) * \returns LIBUSB_SUCCESS on success LIBUSB_ERROR code on failure */ int LIBUSB_CALL libusb_hotplug_register_callback(libusb_context *ctx, libusb_hotplug_event events, libusb_hotplug_flag flags, int vendor_id, int product_id, int dev_class, libusb_hotplug_callback_fn cb_fn, void *user_data, libusb_hotplug_callback_handle *callback_handle); /** \ingroup libusb_hotplug * Deregisters a hotplug callback. * * Deregister a callback from a libusb_context. This function is safe to call from within * a hotplug callback. * * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102 * * \param[in] ctx context this callback is registered with * \param[in] callback_handle the handle of the callback to deregister */ void LIBUSB_CALL libusb_hotplug_deregister_callback(libusb_context *ctx, libusb_hotplug_callback_handle callback_handle); /** \ingroup libusb_lib * Available option values for libusb_set_option(). */ enum libusb_option { /** Set the log message verbosity. * * The default level is LIBUSB_LOG_LEVEL_NONE, which means no messages are ever * printed. If you choose to increase the message verbosity level, ensure * that your application does not close the stderr file descriptor. * * You are advised to use level LIBUSB_LOG_LEVEL_WARNING. libusb is conservative * with its message logging and most of the time, will only log messages that * explain error conditions and other oddities. This will help you debug * your software. * * If the LIBUSB_DEBUG environment variable was set when libusb was * initialized, this function does nothing: the message verbosity is fixed * to the value in the environment variable. * * If libusb was compiled without any message logging, this function does * nothing: you'll never get any messages. * * If libusb was compiled with verbose debug message logging, this function * does nothing: you'll always get messages from all levels. */ LIBUSB_OPTION_LOG_LEVEL, /** Use the UsbDk backend for a specific context, if available. * * This option should be set immediately after calling libusb_init(), otherwise * unspecified behavior may occur. * * Only valid on Windows. */ LIBUSB_OPTION_USE_USBDK, }; int LIBUSB_CALL libusb_set_option(libusb_context *ctx, enum libusb_option option, ...); #ifdef __cplusplus } #endif #endif release/libusb/libusb/core.c0000664000000000000000000025476214261476162015063 0ustar rootroot/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */ /* * Core functions for libusb * Copyright © 2012-2013 Nathan Hjelm * Copyright © 2007-2008 Daniel Drake * Copyright © 2001 Johannes Erdfelt * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include #include #include #include #include #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_TIME_H #include #endif #ifdef HAVE_SYSLOG_H #include #endif #ifdef __ANDROID__ #include #endif #include "libusbi.h" #include "hotplug.h" struct libusb_context *usbi_default_context = NULL; static const struct libusb_version libusb_version_internal = { LIBUSB_MAJOR, LIBUSB_MINOR, LIBUSB_MICRO, LIBUSB_NANO, LIBUSB_RC, "http://libusb.info" }; static int default_context_refcnt = 0; static usbi_mutex_static_t default_context_lock = USBI_MUTEX_INITIALIZER; static struct timespec timestamp_origin = { 0, 0 }; usbi_mutex_static_t active_contexts_lock = USBI_MUTEX_INITIALIZER; struct list_head active_contexts_list; /** * \mainpage libusb-1.0 API Reference * * \section intro Introduction * * libusb is an open source library that allows you to communicate with USB * devices from userspace. For more info, see the * libusb homepage. * * This documentation is aimed at application developers wishing to * communicate with USB peripherals from their own software. After reviewing * this documentation, feedback and questions can be sent to the * libusb-devel mailing list. * * This documentation assumes knowledge of how to operate USB devices from * a software standpoint (descriptors, configurations, interfaces, endpoints, * control/bulk/interrupt/isochronous transfers, etc). Full information * can be found in the USB 3.0 * Specification which is available for free download. You can probably * find less verbose introductions by searching the web. * * \section API Application Programming Interface (API) * * See the \ref libusb_api page for a complete list of the libusb functions. * * \section features Library features * * - All transfer types supported (control/bulk/interrupt/isochronous) * - 2 transfer interfaces: * -# Synchronous (simple) * -# Asynchronous (more complicated, but more powerful) * - Thread safe (although the asynchronous interface means that you * usually won't need to thread) * - Lightweight with lean API * - Compatible with libusb-0.1 through the libusb-compat-0.1 translation layer * - Hotplug support (on some platforms). See \ref libusb_hotplug. * * \section gettingstarted Getting Started * * To begin reading the API documentation, start with the Modules page which * links to the different categories of libusb's functionality. * * One decision you will have to make is whether to use the synchronous * or the asynchronous data transfer interface. The \ref libusb_io documentation * provides some insight into this topic. * * Some example programs can be found in the libusb source distribution under * the "examples" subdirectory. The libusb homepage includes a list of * real-life project examples which use libusb. * * \section errorhandling Error handling * * libusb functions typically return 0 on success or a negative error code * on failure. These negative error codes relate to LIBUSB_ERROR constants * which are listed on the \ref libusb_misc "miscellaneous" documentation page. * * \section msglog Debug message logging * * libusb uses stderr for all logging. By default, logging is set to NONE, * which means that no output will be produced. However, unless the library * has been compiled with logging disabled, then any application calls to * libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, level), or the setting of the * environmental variable LIBUSB_DEBUG outside of the application, can result * in logging being produced. Your application should therefore not close * stderr, but instead direct it to the null device if its output is * undesirable. * * The libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, level) function can be * used to enable logging of certain messages. Under standard configuration, * libusb doesn't really log much so you are advised to use this function * to enable all error/warning/ informational messages. It will help debug * problems with your software. * * The logged messages are unstructured. There is no one-to-one correspondence * between messages being logged and success or failure return codes from * libusb functions. There is no format to the messages, so you should not * try to capture or parse them. They are not and will not be localized. * These messages are not intended to being passed to your application user; * instead, you should interpret the error codes returned from libusb functions * and provide appropriate notification to the user. The messages are simply * there to aid you as a programmer, and if you're confused because you're * getting a strange error code from a libusb function, enabling message * logging may give you a suitable explanation. * * The LIBUSB_DEBUG environment variable can be used to enable message logging * at run-time. This environment variable should be set to a log level number, * which is interpreted the same as the * libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, level) parameter. When this * environment variable is set, the message logging verbosity level is fixed * and libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, level) effectively does * nothing. * * libusb can be compiled without any logging functions, useful for embedded * systems. In this case, libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, level) * and the LIBUSB_DEBUG environment variable have no effects. * * libusb can also be compiled with verbose debugging messages always. When * the library is compiled in this way, all messages of all verbosities are * always logged. libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, level) and * the LIBUSB_DEBUG environment variable have no effects. * * \section remarks Other remarks * * libusb does have imperfections. The \ref libusb_caveats "caveats" page attempts * to document these. */ /** * \page libusb_caveats Caveats * * \section fork Fork considerations * * libusb is not designed to work across fork() calls. Depending on * the platform, there may be resources in the parent process that are not * available to the child (e.g. the hotplug monitor thread on Linux). In * addition, since the parent and child will share libusb's internal file * descriptors, using libusb in any way from the child could cause the parent * process's \ref libusb_context to get into an inconsistent state. * * On Linux, libusb's file descriptors will be marked as CLOEXEC, which means * that it is safe to fork() and exec() without worrying about the child * process needing to clean up state or having access to these file descriptors. * Other platforms may not be so forgiving, so consider yourself warned! * * \section devresets Device resets * * The libusb_reset_device() function allows you to reset a device. If your * program has to call such a function, it should obviously be aware that * the reset will cause device state to change (e.g. register values may be * reset). * * The problem is that any other program could reset the device your program * is working with, at any time. libusb does not offer a mechanism to inform * you when this has happened, so if someone else resets your device it will * not be clear to your own program why the device state has changed. * * Ultimately, this is a limitation of writing drivers in userspace. * Separation from the USB stack in the underlying kernel makes it difficult * for the operating system to deliver such notifications to your program. * The Linux kernel USB stack allows such reset notifications to be delivered * to in-kernel USB drivers, but it is not clear how such notifications could * be delivered to second-class drivers that live in userspace. * * \section blockonly Blocking-only functionality * * The functionality listed below is only available through synchronous, * blocking functions. There are no asynchronous/non-blocking alternatives, * and no clear ways of implementing these. * * - Configuration activation (libusb_set_configuration()) * - Interface/alternate setting activation (libusb_set_interface_alt_setting()) * - Releasing of interfaces (libusb_release_interface()) * - Clearing of halt/stall condition (libusb_clear_halt()) * - Device resets (libusb_reset_device()) * * \section configsel Configuration selection and handling * * When libusb presents a device handle to an application, there is a chance * that the corresponding device may be in unconfigured state. For devices * with multiple configurations, there is also a chance that the configuration * currently selected is not the one that the application wants to use. * * The obvious solution is to add a call to libusb_set_configuration() early * on during your device initialization routines, but there are caveats to * be aware of: * -# If the device is already in the desired configuration, calling * libusb_set_configuration() using the same configuration value will cause * a lightweight device reset. This may not be desirable behaviour. * -# In the case where the desired configuration is already active, libusb * may not even be able to perform a lightweight device reset. For example, * take my USB keyboard with fingerprint reader: I'm interested in driving * the fingerprint reader interface through libusb, but the kernel's * USB-HID driver will almost always have claimed the keyboard interface. * Because the kernel has claimed an interface, it is not even possible to * perform the lightweight device reset, so libusb_set_configuration() will * fail. (Luckily the device in question only has a single configuration.) * -# libusb will be unable to set a configuration if other programs or * drivers have claimed interfaces. In particular, this means that kernel * drivers must be detached from all the interfaces before * libusb_set_configuration() may succeed. * * One solution to some of the above problems is to consider the currently * active configuration. If the configuration we want is already active, then * we don't have to select any configuration: \code cfg = -1; libusb_get_configuration(dev, &cfg); if (cfg != desired) libusb_set_configuration(dev, desired); \endcode * * This is probably suitable for most scenarios, but is inherently racy: * another application or driver may change the selected configuration * after the libusb_get_configuration() call. * * Even in cases where libusb_set_configuration() succeeds, consider that other * applications or drivers may change configuration after your application * calls libusb_set_configuration(). * * One possible way to lock your device into a specific configuration is as * follows: * -# Set the desired configuration (or use the logic above to realise that * it is already in the desired configuration) * -# Claim the interface that you wish to use * -# Check that the currently active configuration is the one that you want * to use. * * The above method works because once an interface is claimed, no application * or driver is able to select another configuration. * * \section earlycomp Early transfer completion * * NOTE: This section is currently Linux-centric. I am not sure if any of these * considerations apply to Darwin or other platforms. * * When a transfer completes early (i.e. when less data is received/sent in * any one packet than the transfer buffer allows for) then libusb is designed * to terminate the transfer immediately, not transferring or receiving any * more data unless other transfers have been queued by the user. * * On legacy platforms, libusb is unable to do this in all situations. After * the incomplete packet occurs, "surplus" data may be transferred. For recent * versions of libusb, this information is kept (the data length of the * transfer is updated) and, for device-to-host transfers, any surplus data was * added to the buffer. Still, this is not a nice solution because it loses the * information about the end of the short packet, and the user probably wanted * that surplus data to arrive in the next logical transfer. * * \section zlp Zero length packets * * - libusb is able to send a packet of zero length to an endpoint simply by * submitting a transfer of zero length. * - The \ref libusb_transfer_flags::LIBUSB_TRANSFER_ADD_ZERO_PACKET * "LIBUSB_TRANSFER_ADD_ZERO_PACKET" flag is currently only supported on Linux. */ /** * \page libusb_contexts Contexts * * It is possible that libusb may be used simultaneously from two independent * libraries linked into the same executable. For example, if your application * has a plugin-like system which allows the user to dynamically load a range * of modules into your program, it is feasible that two independently * developed modules may both use libusb. * * libusb is written to allow for these multiple user scenarios. The two * "instances" of libusb will not interfere: libusb_set_option() calls * from one user will not affect the same settings for other users, other * users can continue using libusb after one of them calls libusb_exit(), etc. * * This is made possible through libusb's context concept. When you * call libusb_init(), you are (optionally) given a context. You can then pass * this context pointer back into future libusb functions. * * In order to keep things simple for more simplistic applications, it is * legal to pass NULL to all functions requiring a context pointer (as long as * you're sure no other code will attempt to use libusb from the same process). * When you pass NULL, the default context will be used. The default context * is created the first time a process calls libusb_init() when no other * context is alive. Contexts are destroyed during libusb_exit(). * * The default context is reference-counted and can be shared. That means that * if libusb_init(NULL) is called twice within the same process, the two * users end up sharing the same context. The deinitialization and freeing of * the default context will only happen when the last user calls libusb_exit(). * In other words, the default context is created and initialized when its * reference count goes from 0 to 1, and is deinitialized and destroyed when * its reference count goes from 1 to 0. * * You may be wondering why only a subset of libusb functions require a * context pointer in their function definition. Internally, libusb stores * context pointers in other objects (e.g. libusb_device instances) and hence * can infer the context from those objects. */ /** * \page libusb_api Application Programming Interface * * This is the complete list of libusb functions, structures and * enumerations in alphabetical order. * * \section Functions * - libusb_alloc_streams() * - libusb_alloc_transfer() * - libusb_attach_kernel_driver() * - libusb_bulk_transfer() * - libusb_cancel_transfer() * - libusb_claim_interface() * - libusb_clear_halt() * - libusb_close() * - libusb_control_transfer() * - libusb_control_transfer_get_data() * - libusb_control_transfer_get_setup() * - libusb_cpu_to_le16() * - libusb_detach_kernel_driver() * - libusb_dev_mem_alloc() * - libusb_dev_mem_free() * - libusb_error_name() * - libusb_event_handler_active() * - libusb_event_handling_ok() * - libusb_exit() * - libusb_fill_bulk_stream_transfer() * - libusb_fill_bulk_transfer() * - libusb_fill_control_setup() * - libusb_fill_control_transfer() * - libusb_fill_interrupt_transfer() * - libusb_fill_iso_transfer() * - libusb_free_bos_descriptor() * - libusb_free_config_descriptor() * - libusb_free_container_id_descriptor() * - libusb_free_device_list() * - libusb_free_pollfds() * - libusb_free_ss_endpoint_companion_descriptor() * - libusb_free_ss_usb_device_capability_descriptor() * - libusb_free_streams() * - libusb_free_transfer() * - libusb_free_usb_2_0_extension_descriptor() * - libusb_get_active_config_descriptor() * - libusb_get_bos_descriptor() * - libusb_get_bus_number() * - libusb_get_config_descriptor() * - libusb_get_config_descriptor_by_value() * - libusb_get_configuration() * - libusb_get_container_id_descriptor() * - libusb_get_descriptor() * - libusb_get_device() * - libusb_get_device_address() * - libusb_get_device_descriptor() * - libusb_get_device_list() * - libusb_get_device_speed() * - libusb_get_iso_packet_buffer() * - libusb_get_iso_packet_buffer_simple() * - libusb_get_max_iso_packet_size() * - libusb_get_max_packet_size() * - libusb_get_next_timeout() * - libusb_get_parent() * - libusb_get_pollfds() * - libusb_get_port_number() * - libusb_get_port_numbers() * - libusb_get_port_path() * - libusb_get_ss_endpoint_companion_descriptor() * - libusb_get_ss_usb_device_capability_descriptor() * - libusb_get_string_descriptor() * - libusb_get_string_descriptor_ascii() * - libusb_get_usb_2_0_extension_descriptor() * - libusb_get_version() * - libusb_handle_events() * - libusb_handle_events_completed() * - libusb_handle_events_locked() * - libusb_handle_events_timeout() * - libusb_handle_events_timeout_completed() * - libusb_has_capability() * - libusb_hotplug_deregister_callback() * - libusb_hotplug_register_callback() * - libusb_init() * - libusb_interrupt_event_handler() * - libusb_interrupt_transfer() * - libusb_kernel_driver_active() * - libusb_lock_events() * - libusb_lock_event_waiters() * - libusb_open() * - libusb_open_device_with_vid_pid() * - libusb_pollfds_handle_timeouts() * - libusb_ref_device() * - libusb_release_interface() * - libusb_reset_device() * - libusb_set_auto_detach_kernel_driver() * - libusb_set_configuration() * - libusb_set_debug() * - libusb_set_interface_alt_setting() * - libusb_set_iso_packet_lengths() * - libusb_set_option() * - libusb_setlocale() * - libusb_set_pollfd_notifiers() * - libusb_strerror() * - libusb_submit_transfer() * - libusb_transfer_get_stream_id() * - libusb_transfer_set_stream_id() * - libusb_try_lock_events() * - libusb_unlock_events() * - libusb_unlock_event_waiters() * - libusb_unref_device() * - libusb_wait_for_event() * * \section Structures * - libusb_bos_descriptor * - libusb_bos_dev_capability_descriptor * - libusb_config_descriptor * - libusb_container_id_descriptor * - \ref libusb_context * - libusb_control_setup * - \ref libusb_device * - libusb_device_descriptor * - \ref libusb_device_handle * - libusb_endpoint_descriptor * - libusb_interface * - libusb_interface_descriptor * - libusb_iso_packet_descriptor * - libusb_pollfd * - libusb_ss_endpoint_companion_descriptor * - libusb_ss_usb_device_capability_descriptor * - libusb_transfer * - libusb_usb_2_0_extension_descriptor * - libusb_version * * \section Enums * - \ref libusb_bos_type * - \ref libusb_capability * - \ref libusb_class_code * - \ref libusb_descriptor_type * - \ref libusb_endpoint_direction * - \ref libusb_error * - \ref libusb_iso_sync_type * - \ref libusb_iso_usage_type * - \ref libusb_log_level * - \ref libusb_option * - \ref libusb_request_recipient * - \ref libusb_request_type * - \ref libusb_speed * - \ref libusb_ss_usb_device_capability_attributes * - \ref libusb_standard_request * - \ref libusb_supported_speed * - \ref libusb_transfer_flags * - \ref libusb_transfer_status * - \ref libusb_transfer_type * - \ref libusb_usb_2_0_extension_attributes */ /** * @defgroup libusb_lib Library initialization/deinitialization * This page details how to initialize and deinitialize libusb. Initialization * must be performed before using any libusb functionality, and similarly you * must not call any libusb functions after deinitialization. */ /** * @defgroup libusb_dev Device handling and enumeration * The functionality documented below is designed to help with the following * operations: * - Enumerating the USB devices currently attached to the system * - Choosing a device to operate from your software * - Opening and closing the chosen device * * \section nutshell In a nutshell... * * The description below really makes things sound more complicated than they * actually are. The following sequence of function calls will be suitable * for almost all scenarios and does not require you to have such a deep * understanding of the resource management issues: * \code // discover devices libusb_device **list; libusb_device *found = NULL; ssize_t cnt = libusb_get_device_list(NULL, &list); ssize_t i = 0; int err = 0; if (cnt < 0) error(); for (i = 0; i < cnt; i++) { libusb_device *device = list[i]; if (is_interesting(device)) { found = device; break; } } if (found) { libusb_device_handle *handle; err = libusb_open(found, &handle); if (err) error(); // etc } libusb_free_device_list(list, 1); \endcode * * The two important points: * - You asked libusb_free_device_list() to unreference the devices (2nd * parameter) * - You opened the device before freeing the list and unreferencing the * devices * * If you ended up with a handle, you can now proceed to perform I/O on the * device. * * \section devshandles Devices and device handles * libusb has a concept of a USB device, represented by the * \ref libusb_device opaque type. A device represents a USB device that * is currently or was previously connected to the system. Using a reference * to a device, you can determine certain information about the device (e.g. * you can read the descriptor data). * * The libusb_get_device_list() function can be used to obtain a list of * devices currently connected to the system. This is known as device * discovery. * * Just because you have a reference to a device does not mean it is * necessarily usable. The device may have been unplugged, you may not have * permission to operate such device, or another program or driver may be * using the device. * * When you've found a device that you'd like to operate, you must ask * libusb to open the device using the libusb_open() function. Assuming * success, libusb then returns you a device handle * (a \ref libusb_device_handle pointer). All "real" I/O operations then * operate on the handle rather than the original device pointer. * * \section devref Device discovery and reference counting * * Device discovery (i.e. calling libusb_get_device_list()) returns a * freshly-allocated list of devices. The list itself must be freed when * you are done with it. libusb also needs to know when it is OK to free * the contents of the list - the devices themselves. * * To handle these issues, libusb provides you with two separate items: * - A function to free the list itself * - A reference counting system for the devices inside * * New devices presented by the libusb_get_device_list() function all have a * reference count of 1. You can increase and decrease reference count using * libusb_ref_device() and libusb_unref_device(). A device is destroyed when * its reference count reaches 0. * * With the above information in mind, the process of opening a device can * be viewed as follows: * -# Discover devices using libusb_get_device_list(). * -# Choose the device that you want to operate, and call libusb_open(). * -# Unref all devices in the discovered device list. * -# Free the discovered device list. * * The order is important - you must not unreference the device before * attempting to open it, because unreferencing it may destroy the device. * * For convenience, the libusb_free_device_list() function includes a * parameter to optionally unreference all the devices in the list before * freeing the list itself. This combines steps 3 and 4 above. * * As an implementation detail, libusb_open() actually adds a reference to * the device in question. This is because the device remains available * through the handle via libusb_get_device(). The reference is deleted during * libusb_close(). */ /** @defgroup libusb_misc Miscellaneous */ /* we traverse usbfs without knowing how many devices we are going to find. * so we create this discovered_devs model which is similar to a linked-list * which grows when required. it can be freed once discovery has completed, * eliminating the need for a list node in the libusb_device structure * itself. */ #define DISCOVERED_DEVICES_SIZE_STEP 8 static struct discovered_devs *discovered_devs_alloc(void) { struct discovered_devs *ret = malloc(sizeof(*ret) + (sizeof(void *) * DISCOVERED_DEVICES_SIZE_STEP)); if (ret) { ret->len = 0; ret->capacity = DISCOVERED_DEVICES_SIZE_STEP; } return ret; } static void discovered_devs_free(struct discovered_devs *discdevs) { size_t i; for (i = 0; i < discdevs->len; i++) libusb_unref_device(discdevs->devices[i]); free(discdevs); } /* append a device to the discovered devices collection. may realloc itself, * returning new discdevs. returns NULL on realloc failure. */ struct discovered_devs *discovered_devs_append( struct discovered_devs *discdevs, struct libusb_device *dev) { size_t len = discdevs->len; size_t capacity; struct discovered_devs *new_discdevs; /* if there is space, just append the device */ if (len < discdevs->capacity) { discdevs->devices[len] = libusb_ref_device(dev); discdevs->len++; return discdevs; } /* exceeded capacity, need to grow */ usbi_dbg("need to increase capacity"); capacity = discdevs->capacity + DISCOVERED_DEVICES_SIZE_STEP; /* can't use usbi_reallocf here because in failure cases it would * free the existing discdevs without unreferencing its devices. */ new_discdevs = realloc(discdevs, sizeof(*discdevs) + (sizeof(void *) * capacity)); if (!new_discdevs) { discovered_devs_free(discdevs); return NULL; } discdevs = new_discdevs; discdevs->capacity = capacity; discdevs->devices[len] = libusb_ref_device(dev); discdevs->len++; return discdevs; } /* Allocate a new device with a specific session ID. The returned device has * a reference count of 1. */ struct libusb_device *usbi_alloc_device(struct libusb_context *ctx, unsigned long session_id) { size_t priv_size = usbi_backend.device_priv_size; struct libusb_device *dev = calloc(1, sizeof(*dev) + priv_size); int r; if (!dev) return NULL; r = usbi_mutex_init(&dev->lock); if (r) { free(dev); return NULL; } dev->ctx = ctx; dev->refcnt = 1; dev->session_data = session_id; dev->speed = LIBUSB_SPEED_UNKNOWN; if (!libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { usbi_connect_device (dev); } return dev; } void usbi_connect_device(struct libusb_device *dev) { struct libusb_context *ctx = DEVICE_CTX(dev); dev->attached = 1; usbi_mutex_lock(&dev->ctx->usb_devs_lock); list_add(&dev->list, &dev->ctx->usb_devs); usbi_mutex_unlock(&dev->ctx->usb_devs_lock); /* Signal that an event has occurred for this device if we support hotplug AND * the hotplug message list is ready. This prevents an event from getting raised * during initial enumeration. */ if (libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG) && dev->ctx->hotplug_msgs.next) { usbi_hotplug_notification(ctx, dev, LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED); } } void usbi_disconnect_device(struct libusb_device *dev) { struct libusb_context *ctx = DEVICE_CTX(dev); usbi_mutex_lock(&dev->lock); dev->attached = 0; usbi_mutex_unlock(&dev->lock); usbi_mutex_lock(&ctx->usb_devs_lock); list_del(&dev->list); usbi_mutex_unlock(&ctx->usb_devs_lock); /* Signal that an event has occurred for this device if we support hotplug AND * the hotplug message list is ready. This prevents an event from getting raised * during initial enumeration. libusb_handle_events will take care of dereferencing * the device. */ if (libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG) && dev->ctx->hotplug_msgs.next) { usbi_hotplug_notification(ctx, dev, LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT); } } /* Perform some final sanity checks on a newly discovered device. If this * function fails (negative return code), the device should not be added * to the discovered device list. */ int usbi_sanitize_device(struct libusb_device *dev) { int r; uint8_t num_configurations; r = usbi_device_cache_descriptor(dev); if (r < 0) return r; num_configurations = dev->device_descriptor.bNumConfigurations; if (num_configurations > USB_MAXCONFIG) { usbi_err(DEVICE_CTX(dev), "too many configurations"); return LIBUSB_ERROR_IO; } else if (0 == num_configurations) usbi_dbg("zero configurations, maybe an unauthorized device"); dev->num_configurations = num_configurations; return 0; } /* Examine libusb's internal list of known devices, looking for one with * a specific session ID. Returns the matching device if it was found, and * NULL otherwise. */ struct libusb_device *usbi_get_device_by_session_id(struct libusb_context *ctx, unsigned long session_id) { struct libusb_device *dev; struct libusb_device *ret = NULL; usbi_mutex_lock(&ctx->usb_devs_lock); list_for_each_entry(dev, &ctx->usb_devs, list, struct libusb_device) if (dev->session_data == session_id) { ret = libusb_ref_device(dev); break; } usbi_mutex_unlock(&ctx->usb_devs_lock); return ret; } /** @ingroup libusb_dev * Returns a list of USB devices currently attached to the system. This is * your entry point into finding a USB device to operate. * * You are expected to unreference all the devices when you are done with * them, and then free the list with libusb_free_device_list(). Note that * libusb_free_device_list() can unref all the devices for you. Be careful * not to unreference a device you are about to open until after you have * opened it. * * This return value of this function indicates the number of devices in * the resultant list. The list is actually one element larger, as it is * NULL-terminated. * * \param ctx the context to operate on, or NULL for the default context * \param list output location for a list of devices. Must be later freed with * libusb_free_device_list(). * \returns the number of devices in the outputted list, or any * \ref libusb_error according to errors encountered by the backend. */ ssize_t API_EXPORTED libusb_get_device_list(libusb_context *ctx, libusb_device ***list) { struct discovered_devs *discdevs = discovered_devs_alloc(); struct libusb_device **ret; int r = 0; ssize_t i, len; USBI_GET_CONTEXT(ctx); usbi_dbg(""); if (!discdevs) return LIBUSB_ERROR_NO_MEM; if (libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { /* backend provides hotplug support */ struct libusb_device *dev; if (usbi_backend.hotplug_poll) usbi_backend.hotplug_poll(); usbi_mutex_lock(&ctx->usb_devs_lock); list_for_each_entry(dev, &ctx->usb_devs, list, struct libusb_device) { discdevs = discovered_devs_append(discdevs, dev); if (!discdevs) { r = LIBUSB_ERROR_NO_MEM; break; } } usbi_mutex_unlock(&ctx->usb_devs_lock); } else { /* backend does not provide hotplug support */ r = usbi_backend.get_device_list(ctx, &discdevs); } if (r < 0) { len = r; goto out; } /* convert discovered_devs into a list */ len = discdevs->len; ret = calloc(len + 1, sizeof(struct libusb_device *)); if (!ret) { len = LIBUSB_ERROR_NO_MEM; goto out; } ret[len] = NULL; for (i = 0; i < len; i++) { struct libusb_device *dev = discdevs->devices[i]; ret[i] = libusb_ref_device(dev); } *list = ret; out: if (discdevs) discovered_devs_free(discdevs); return len; } /** \ingroup libusb_dev * Frees a list of devices previously discovered using * libusb_get_device_list(). If the unref_devices parameter is set, the * reference count of each device in the list is decremented by 1. * \param list the list to free * \param unref_devices whether to unref the devices in the list */ void API_EXPORTED libusb_free_device_list(libusb_device **list, int unref_devices) { if (!list) return; if (unref_devices) { int i = 0; struct libusb_device *dev; while ((dev = list[i++]) != NULL) libusb_unref_device(dev); } free(list); } /** \ingroup libusb_dev * Get the number of the bus that a device is connected to. * \param dev a device * \returns the bus number */ uint8_t API_EXPORTED libusb_get_bus_number(libusb_device *dev) { return dev->bus_number; } /** \ingroup libusb_dev * Get the number of the port that a device is connected to. * Unless the OS does something funky, or you are hot-plugging USB extension cards, * the port number returned by this call is usually guaranteed to be uniquely tied * to a physical port, meaning that different devices plugged on the same physical * port should return the same port number. * * But outside of this, there is no guarantee that the port number returned by this * call will remain the same, or even match the order in which ports have been * numbered by the HUB/HCD manufacturer. * * \param dev a device * \returns the port number (0 if not available) */ uint8_t API_EXPORTED libusb_get_port_number(libusb_device *dev) { return dev->port_number; } /** \ingroup libusb_dev * Get the list of all port numbers from root for the specified device * * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102 * \param dev a device * \param port_numbers the array that should contain the port numbers * \param port_numbers_len the maximum length of the array. As per the USB 3.0 * specs, the current maximum limit for the depth is 7. * \returns the number of elements filled * \returns LIBUSB_ERROR_OVERFLOW if the array is too small */ int API_EXPORTED libusb_get_port_numbers(libusb_device *dev, uint8_t* port_numbers, int port_numbers_len) { int i = port_numbers_len; struct libusb_context *ctx = DEVICE_CTX(dev); if (port_numbers_len <= 0) return LIBUSB_ERROR_INVALID_PARAM; // HCDs can be listed as devices with port #0 while((dev) && (dev->port_number != 0)) { if (--i < 0) { usbi_warn(ctx, "port numbers array is too small"); return LIBUSB_ERROR_OVERFLOW; } port_numbers[i] = dev->port_number; dev = dev->parent_dev; } if (i < port_numbers_len) memmove(port_numbers, &port_numbers[i], port_numbers_len - i); return port_numbers_len - i; } /** \ingroup libusb_dev * Deprecated please use libusb_get_port_numbers instead. */ int API_EXPORTED libusb_get_port_path(libusb_context *ctx, libusb_device *dev, uint8_t* port_numbers, uint8_t port_numbers_len) { UNUSED(ctx); return libusb_get_port_numbers(dev, port_numbers, port_numbers_len); } /** \ingroup libusb_dev * Get the the parent from the specified device. * \param dev a device * \returns the device parent or NULL if not available * You should issue a \ref libusb_get_device_list() before calling this * function and make sure that you only access the parent before issuing * \ref libusb_free_device_list(). The reason is that libusb currently does * not maintain a permanent list of device instances, and therefore can * only guarantee that parents are fully instantiated within a * libusb_get_device_list() - libusb_free_device_list() block. */ DEFAULT_VISIBILITY libusb_device * LIBUSB_CALL libusb_get_parent(libusb_device *dev) { return dev->parent_dev; } /** \ingroup libusb_dev * Get the address of the device on the bus it is connected to. * \param dev a device * \returns the device address */ uint8_t API_EXPORTED libusb_get_device_address(libusb_device *dev) { return dev->device_address; } /** \ingroup libusb_dev * Get the negotiated connection speed for a device. * \param dev a device * \returns a \ref libusb_speed code, where LIBUSB_SPEED_UNKNOWN means that * the OS doesn't know or doesn't support returning the negotiated speed. */ int API_EXPORTED libusb_get_device_speed(libusb_device *dev) { return dev->speed; } static const struct libusb_endpoint_descriptor *find_endpoint( struct libusb_config_descriptor *config, unsigned char endpoint) { int iface_idx; for (iface_idx = 0; iface_idx < config->bNumInterfaces; iface_idx++) { const struct libusb_interface *iface = &config->interface[iface_idx]; int altsetting_idx; for (altsetting_idx = 0; altsetting_idx < iface->num_altsetting; altsetting_idx++) { const struct libusb_interface_descriptor *altsetting = &iface->altsetting[altsetting_idx]; int ep_idx; for (ep_idx = 0; ep_idx < altsetting->bNumEndpoints; ep_idx++) { const struct libusb_endpoint_descriptor *ep = &altsetting->endpoint[ep_idx]; if (ep->bEndpointAddress == endpoint) return ep; } } } return NULL; } /** \ingroup libusb_dev * Convenience function to retrieve the wMaxPacketSize value for a particular * endpoint in the active device configuration. * * This function was originally intended to be of assistance when setting up * isochronous transfers, but a design mistake resulted in this function * instead. It simply returns the wMaxPacketSize value without considering * its contents. If you're dealing with isochronous transfers, you probably * want libusb_get_max_iso_packet_size() instead. * * \param dev a device * \param endpoint address of the endpoint in question * \returns the wMaxPacketSize value * \returns LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist * \returns LIBUSB_ERROR_OTHER on other failure */ int API_EXPORTED libusb_get_max_packet_size(libusb_device *dev, unsigned char endpoint) { struct libusb_config_descriptor *config; const struct libusb_endpoint_descriptor *ep; int r; r = libusb_get_active_config_descriptor(dev, &config); if (r < 0) { usbi_err(DEVICE_CTX(dev), "could not retrieve active config descriptor"); return LIBUSB_ERROR_OTHER; } ep = find_endpoint(config, endpoint); if (!ep) { r = LIBUSB_ERROR_NOT_FOUND; goto out; } r = ep->wMaxPacketSize; out: libusb_free_config_descriptor(config); return r; } /** \ingroup libusb_dev * Calculate the maximum packet size which a specific endpoint is capable is * sending or receiving in the duration of 1 microframe * * Only the active configuration is examined. The calculation is based on the * wMaxPacketSize field in the endpoint descriptor as described in section * 9.6.6 in the USB 2.0 specifications. * * If acting on an isochronous or interrupt endpoint, this function will * multiply the value found in bits 0:10 by the number of transactions per * microframe (determined by bits 11:12). Otherwise, this function just * returns the numeric value found in bits 0:10. * * This function is useful for setting up isochronous transfers, for example * you might pass the return value from this function to * libusb_set_iso_packet_lengths() in order to set the length field of every * isochronous packet in a transfer. * * Since v1.0.3. * * \param dev a device * \param endpoint address of the endpoint in question * \returns the maximum packet size which can be sent/received on this endpoint * \returns LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist * \returns LIBUSB_ERROR_OTHER on other failure */ int API_EXPORTED libusb_get_max_iso_packet_size(libusb_device *dev, unsigned char endpoint) { struct libusb_config_descriptor *config; const struct libusb_endpoint_descriptor *ep; enum libusb_transfer_type ep_type; uint16_t val; int r; r = libusb_get_active_config_descriptor(dev, &config); if (r < 0) { usbi_err(DEVICE_CTX(dev), "could not retrieve active config descriptor"); return LIBUSB_ERROR_OTHER; } ep = find_endpoint(config, endpoint); if (!ep) { r = LIBUSB_ERROR_NOT_FOUND; goto out; } val = ep->wMaxPacketSize; ep_type = (enum libusb_transfer_type) (ep->bmAttributes & 0x3); r = val & 0x07ff; if (ep_type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS || ep_type == LIBUSB_TRANSFER_TYPE_INTERRUPT) r *= (1 + ((val >> 11) & 3)); out: libusb_free_config_descriptor(config); return r; } /** \ingroup libusb_dev * Increment the reference count of a device. * \param dev the device to reference * \returns the same device */ DEFAULT_VISIBILITY libusb_device * LIBUSB_CALL libusb_ref_device(libusb_device *dev) { usbi_mutex_lock(&dev->lock); dev->refcnt++; usbi_mutex_unlock(&dev->lock); return dev; } /** \ingroup libusb_dev * Decrement the reference count of a device. If the decrement operation * causes the reference count to reach zero, the device shall be destroyed. * \param dev the device to unreference */ void API_EXPORTED libusb_unref_device(libusb_device *dev) { int refcnt; if (!dev) return; usbi_mutex_lock(&dev->lock); refcnt = --dev->refcnt; usbi_mutex_unlock(&dev->lock); if (refcnt == 0) { usbi_dbg("destroy device %d.%d", dev->bus_number, dev->device_address); libusb_unref_device(dev->parent_dev); if (usbi_backend.destroy_device) usbi_backend.destroy_device(dev); if (!libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { /* backend does not support hotplug */ usbi_disconnect_device(dev); } usbi_mutex_destroy(&dev->lock); free(dev); } } /* * Signal the event pipe so that the event handling thread will be * interrupted to process an internal event. */ int usbi_signal_event(struct libusb_context *ctx) { unsigned char dummy = 1; ssize_t r; /* write some data on event pipe to interrupt event handlers */ r = usbi_write(ctx->event_pipe[1], &dummy, sizeof(dummy)); if (r != sizeof(dummy)) { usbi_warn(ctx, "internal signalling write failed"); return LIBUSB_ERROR_IO; } return 0; } /* * Clear the event pipe so that the event handling will no longer be * interrupted. */ int usbi_clear_event(struct libusb_context *ctx) { unsigned char dummy; ssize_t r; /* read some data on event pipe to clear it */ r = usbi_read(ctx->event_pipe[0], &dummy, sizeof(dummy)); if (r != sizeof(dummy)) { usbi_warn(ctx, "internal signalling read failed"); return LIBUSB_ERROR_IO; } return 0; } /** \ingroup libusb_dev * Open a device and obtain a device handle. A handle allows you to perform * I/O on the device in question. * * Internally, this function adds a reference to the device and makes it * available to you through libusb_get_device(). This reference is removed * during libusb_close(). * * This is a non-blocking function; no requests are sent over the bus. * * \param dev the device to open * \param dev_handle output location for the returned device handle pointer. Only * populated when the return code is 0. * \returns 0 on success * \returns LIBUSB_ERROR_NO_MEM on memory allocation failure * \returns LIBUSB_ERROR_ACCESS if the user has insufficient permissions * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns another LIBUSB_ERROR code on other failure */ int API_EXPORTED libusb_open(libusb_device *dev, libusb_device_handle **dev_handle) { struct libusb_context *ctx = DEVICE_CTX(dev); struct libusb_device_handle *_dev_handle; size_t priv_size = usbi_backend.device_handle_priv_size; int r; usbi_dbg("open %d.%d", dev->bus_number, dev->device_address); if (!dev->attached) { return LIBUSB_ERROR_NO_DEVICE; } _dev_handle = malloc(sizeof(*_dev_handle) + priv_size); if (!_dev_handle) return LIBUSB_ERROR_NO_MEM; r = usbi_mutex_init(&_dev_handle->lock); if (r) { free(_dev_handle); return LIBUSB_ERROR_OTHER; } _dev_handle->dev = libusb_ref_device(dev); _dev_handle->auto_detach_kernel_driver = 0; _dev_handle->claimed_interfaces = 0; memset(&_dev_handle->os_priv, 0, priv_size); r = usbi_backend.open(_dev_handle); if (r < 0) { usbi_dbg("open %d.%d returns %d", dev->bus_number, dev->device_address, r); libusb_unref_device(dev); usbi_mutex_destroy(&_dev_handle->lock); free(_dev_handle); return r; } usbi_mutex_lock(&ctx->open_devs_lock); list_add(&_dev_handle->list, &ctx->open_devs); usbi_mutex_unlock(&ctx->open_devs_lock); *dev_handle = _dev_handle; return 0; } /** \ingroup libusb_dev * Convenience function for finding a device with a particular * idVendor/idProduct combination. This function is intended * for those scenarios where you are using libusb to knock up a quick test * application - it allows you to avoid calling libusb_get_device_list() and * worrying about traversing/freeing the list. * * This function has limitations and is hence not intended for use in real * applications: if multiple devices have the same IDs it will only * give you the first one, etc. * * \param ctx the context to operate on, or NULL for the default context * \param vendor_id the idVendor value to search for * \param product_id the idProduct value to search for * \returns a device handle for the first found device, or NULL on error * or if the device could not be found. */ DEFAULT_VISIBILITY libusb_device_handle * LIBUSB_CALL libusb_open_device_with_vid_pid( libusb_context *ctx, uint16_t vendor_id, uint16_t product_id) { struct libusb_device **devs; struct libusb_device *found = NULL; struct libusb_device *dev; struct libusb_device_handle *dev_handle = NULL; size_t i = 0; int r; if (libusb_get_device_list(ctx, &devs) < 0) return NULL; while ((dev = devs[i++]) != NULL) { struct libusb_device_descriptor desc; r = libusb_get_device_descriptor(dev, &desc); if (r < 0) goto out; if (desc.idVendor == vendor_id && desc.idProduct == product_id) { found = dev; break; } } if (found) { r = libusb_open(found, &dev_handle); if (r < 0) dev_handle = NULL; } out: libusb_free_device_list(devs, 1); return dev_handle; } static void do_close(struct libusb_context *ctx, struct libusb_device_handle *dev_handle) { struct usbi_transfer *itransfer; struct usbi_transfer *tmp; /* remove any transfers in flight that are for this device */ usbi_mutex_lock(&ctx->flying_transfers_lock); /* safe iteration because transfers may be being deleted */ list_for_each_entry_safe(itransfer, tmp, &ctx->flying_transfers, list, struct usbi_transfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); if (transfer->dev_handle != dev_handle) continue; usbi_mutex_lock(&itransfer->lock); if (!(itransfer->state_flags & USBI_TRANSFER_DEVICE_DISAPPEARED)) { usbi_err(ctx, "Device handle closed while transfer was still being processed, but the device is still connected as far as we know"); if (itransfer->state_flags & USBI_TRANSFER_CANCELLING) usbi_warn(ctx, "A cancellation for an in-flight transfer hasn't completed but closing the device handle"); else usbi_err(ctx, "A cancellation hasn't even been scheduled on the transfer for which the device is closing"); } usbi_mutex_unlock(&itransfer->lock); /* remove from the list of in-flight transfers and make sure * we don't accidentally use the device handle in the future * (or that such accesses will be easily caught and identified as a crash) */ list_del(&itransfer->list); transfer->dev_handle = NULL; /* it is up to the user to free up the actual transfer struct. this is * just making sure that we don't attempt to process the transfer after * the device handle is invalid */ usbi_dbg("Removed transfer %p from the in-flight list because device handle %p closed", transfer, dev_handle); } usbi_mutex_unlock(&ctx->flying_transfers_lock); usbi_mutex_lock(&ctx->open_devs_lock); list_del(&dev_handle->list); usbi_mutex_unlock(&ctx->open_devs_lock); usbi_backend.close(dev_handle); libusb_unref_device(dev_handle->dev); usbi_mutex_destroy(&dev_handle->lock); free(dev_handle); } /** \ingroup libusb_dev * Close a device handle. Should be called on all open handles before your * application exits. * * Internally, this function destroys the reference that was added by * libusb_open() on the given device. * * This is a non-blocking function; no requests are sent over the bus. * * \param dev_handle the device handle to close */ void API_EXPORTED libusb_close(libusb_device_handle *dev_handle) { struct libusb_context *ctx; int handling_events; int pending_events; if (!dev_handle) return; usbi_dbg(""); ctx = HANDLE_CTX(dev_handle); handling_events = usbi_handling_events(ctx); /* Similarly to libusb_open(), we want to interrupt all event handlers * at this point. More importantly, we want to perform the actual close of * the device while holding the event handling lock (preventing any other * thread from doing event handling) because we will be removing a file * descriptor from the polling loop. If this is being called by the current * event handler, we can bypass the interruption code because we already * hold the event handling lock. */ if (!handling_events) { /* Record that we are closing a device. * Only signal an event if there are no prior pending events. */ usbi_mutex_lock(&ctx->event_data_lock); pending_events = usbi_pending_events(ctx); ctx->device_close++; if (!pending_events) usbi_signal_event(ctx); usbi_mutex_unlock(&ctx->event_data_lock); /* take event handling lock */ libusb_lock_events(ctx); } /* Close the device */ do_close(ctx, dev_handle); if (!handling_events) { /* We're done with closing this device. * Clear the event pipe if there are no further pending events. */ usbi_mutex_lock(&ctx->event_data_lock); ctx->device_close--; pending_events = usbi_pending_events(ctx); if (!pending_events) usbi_clear_event(ctx); usbi_mutex_unlock(&ctx->event_data_lock); /* Release event handling lock and wake up event waiters */ libusb_unlock_events(ctx); } } /** \ingroup libusb_dev * Get the underlying device for a device handle. This function does not modify * the reference count of the returned device, so do not feel compelled to * unreference it when you are done. * \param dev_handle a device handle * \returns the underlying device */ DEFAULT_VISIBILITY libusb_device * LIBUSB_CALL libusb_get_device(libusb_device_handle *dev_handle) { return dev_handle->dev; } /** \ingroup libusb_dev * Determine the bConfigurationValue of the currently active configuration. * * You could formulate your own control request to obtain this information, * but this function has the advantage that it may be able to retrieve the * information from operating system caches (no I/O involved). * * If the OS does not cache this information, then this function will block * while a control transfer is submitted to retrieve the information. * * This function will return a value of 0 in the config output * parameter if the device is in unconfigured state. * * \param dev_handle a device handle * \param config output location for the bConfigurationValue of the active * configuration (only valid for return code 0) * \returns 0 on success * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns another LIBUSB_ERROR code on other failure */ int API_EXPORTED libusb_get_configuration(libusb_device_handle *dev_handle, int *config) { int r = LIBUSB_ERROR_NOT_SUPPORTED; usbi_dbg(""); if (usbi_backend.get_configuration) r = usbi_backend.get_configuration(dev_handle, config); if (r == LIBUSB_ERROR_NOT_SUPPORTED) { uint8_t tmp = 0; usbi_dbg("falling back to control message"); r = libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_IN, LIBUSB_REQUEST_GET_CONFIGURATION, 0, 0, &tmp, 1, 1000); if (r == 0) { usbi_err(HANDLE_CTX(dev_handle), "zero bytes returned in ctrl transfer?"); r = LIBUSB_ERROR_IO; } else if (r == 1) { r = 0; *config = tmp; } else { usbi_dbg("control failed, error %d", r); } } if (r == 0) usbi_dbg("active config %d", *config); return r; } /** \ingroup libusb_dev * Set the active configuration for a device. * * The operating system may or may not have already set an active * configuration on the device. It is up to your application to ensure the * correct configuration is selected before you attempt to claim interfaces * and perform other operations. * * If you call this function on a device already configured with the selected * configuration, then this function will act as a lightweight device reset: * it will issue a SET_CONFIGURATION request using the current configuration, * causing most USB-related device state to be reset (altsetting reset to zero, * endpoint halts cleared, toggles reset). * * You cannot change/reset configuration if your application has claimed * interfaces. It is advised to set the desired configuration before claiming * interfaces. * * Alternatively you can call libusb_release_interface() first. Note if you * do things this way you must ensure that auto_detach_kernel_driver for * dev is 0, otherwise the kernel driver will be re-attached when you * release the interface(s). * * You cannot change/reset configuration if other applications or drivers have * claimed interfaces. * * A configuration value of -1 will put the device in unconfigured state. * The USB specifications state that a configuration value of 0 does this, * however buggy devices exist which actually have a configuration 0. * * You should always use this function rather than formulating your own * SET_CONFIGURATION control request. This is because the underlying operating * system needs to know when such changes happen. * * This is a blocking function. * * \param dev_handle a device handle * \param configuration the bConfigurationValue of the configuration you * wish to activate, or -1 if you wish to put the device in an unconfigured * state * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the requested configuration does not exist * \returns LIBUSB_ERROR_BUSY if interfaces are currently claimed * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns another LIBUSB_ERROR code on other failure * \see libusb_set_auto_detach_kernel_driver() */ int API_EXPORTED libusb_set_configuration(libusb_device_handle *dev_handle, int configuration) { usbi_dbg("configuration %d", configuration); return usbi_backend.set_configuration(dev_handle, configuration); } /** \ingroup libusb_dev * Claim an interface on a given device handle. You must claim the interface * you wish to use before you can perform I/O on any of its endpoints. * * It is legal to attempt to claim an already-claimed interface, in which * case libusb just returns 0 without doing anything. * * If auto_detach_kernel_driver is set to 1 for dev, the kernel driver * will be detached if necessary, on failure the detach error is returned. * * Claiming of interfaces is a purely logical operation; it does not cause * any requests to be sent over the bus. Interface claiming is used to * instruct the underlying operating system that your application wishes * to take ownership of the interface. * * This is a non-blocking function. * * \param dev_handle a device handle * \param interface_number the bInterfaceNumber of the interface you * wish to claim * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the requested interface does not exist * \returns LIBUSB_ERROR_BUSY if another program or driver has claimed the * interface * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns a LIBUSB_ERROR code on other failure * \see libusb_set_auto_detach_kernel_driver() */ int API_EXPORTED libusb_claim_interface(libusb_device_handle *dev_handle, int interface_number) { int r = 0; usbi_dbg("interface %d", interface_number); if (interface_number >= USB_MAXINTERFACES) return LIBUSB_ERROR_INVALID_PARAM; if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; usbi_mutex_lock(&dev_handle->lock); if (dev_handle->claimed_interfaces & (1 << interface_number)) goto out; r = usbi_backend.claim_interface(dev_handle, interface_number); if (r == 0) dev_handle->claimed_interfaces |= 1 << interface_number; out: usbi_mutex_unlock(&dev_handle->lock); return r; } /** \ingroup libusb_dev * Release an interface previously claimed with libusb_claim_interface(). You * should release all claimed interfaces before closing a device handle. * * This is a blocking function. A SET_INTERFACE control request will be sent * to the device, resetting interface state to the first alternate setting. * * If auto_detach_kernel_driver is set to 1 for dev, the kernel * driver will be re-attached after releasing the interface. * * \param dev_handle a device handle * \param interface_number the bInterfaceNumber of the * previously-claimed interface * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the interface was not claimed * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns another LIBUSB_ERROR code on other failure * \see libusb_set_auto_detach_kernel_driver() */ int API_EXPORTED libusb_release_interface(libusb_device_handle *dev_handle, int interface_number) { int r; usbi_dbg("interface %d", interface_number); if (interface_number >= USB_MAXINTERFACES) return LIBUSB_ERROR_INVALID_PARAM; usbi_mutex_lock(&dev_handle->lock); if (!(dev_handle->claimed_interfaces & (1 << interface_number))) { r = LIBUSB_ERROR_NOT_FOUND; goto out; } r = usbi_backend.release_interface(dev_handle, interface_number); if (r == 0) dev_handle->claimed_interfaces &= ~(1 << interface_number); out: usbi_mutex_unlock(&dev_handle->lock); return r; } /** \ingroup libusb_dev * Activate an alternate setting for an interface. The interface must have * been previously claimed with libusb_claim_interface(). * * You should always use this function rather than formulating your own * SET_INTERFACE control request. This is because the underlying operating * system needs to know when such changes happen. * * This is a blocking function. * * \param dev_handle a device handle * \param interface_number the bInterfaceNumber of the * previously-claimed interface * \param alternate_setting the bAlternateSetting of the alternate * setting to activate * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the interface was not claimed, or the * requested alternate setting does not exist * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns another LIBUSB_ERROR code on other failure */ int API_EXPORTED libusb_set_interface_alt_setting(libusb_device_handle *dev_handle, int interface_number, int alternate_setting) { usbi_dbg("interface %d altsetting %d", interface_number, alternate_setting); if (interface_number >= USB_MAXINTERFACES) return LIBUSB_ERROR_INVALID_PARAM; usbi_mutex_lock(&dev_handle->lock); if (!dev_handle->dev->attached) { usbi_mutex_unlock(&dev_handle->lock); return LIBUSB_ERROR_NO_DEVICE; } if (!(dev_handle->claimed_interfaces & (1 << interface_number))) { usbi_mutex_unlock(&dev_handle->lock); return LIBUSB_ERROR_NOT_FOUND; } usbi_mutex_unlock(&dev_handle->lock); return usbi_backend.set_interface_altsetting(dev_handle, interface_number, alternate_setting); } /** \ingroup libusb_dev * Clear the halt/stall condition for an endpoint. Endpoints with halt status * are unable to receive or transmit data until the halt condition is stalled. * * You should cancel all pending transfers before attempting to clear the halt * condition. * * This is a blocking function. * * \param dev_handle a device handle * \param endpoint the endpoint to clear halt status * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the endpoint does not exist * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns another LIBUSB_ERROR code on other failure */ int API_EXPORTED libusb_clear_halt(libusb_device_handle *dev_handle, unsigned char endpoint) { usbi_dbg("endpoint %x", endpoint); if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; return usbi_backend.clear_halt(dev_handle, endpoint); } /** \ingroup libusb_dev * Perform a USB port reset to reinitialize a device. The system will attempt * to restore the previous configuration and alternate settings after the * reset has completed. * * If the reset fails, the descriptors change, or the previous state cannot be * restored, the device will appear to be disconnected and reconnected. This * means that the device handle is no longer valid (you should close it) and * rediscover the device. A return code of LIBUSB_ERROR_NOT_FOUND indicates * when this is the case. * * This is a blocking function which usually incurs a noticeable delay. * * \param dev_handle a handle of the device to reset * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if re-enumeration is required, or if the * device has been disconnected * \returns another LIBUSB_ERROR code on other failure */ int API_EXPORTED libusb_reset_device(libusb_device_handle *dev_handle) { usbi_dbg(""); if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; return usbi_backend.reset_device(dev_handle); } /** \ingroup libusb_asyncio * Allocate up to num_streams usb bulk streams on the specified endpoints. This * function takes an array of endpoints rather then a single endpoint because * some protocols require that endpoints are setup with similar stream ids. * All endpoints passed in must belong to the same interface. * * Note this function may return less streams then requested. Also note that the * same number of streams are allocated for each endpoint in the endpoint array. * * Stream id 0 is reserved, and should not be used to communicate with devices. * If libusb_alloc_streams() returns with a value of N, you may use stream ids * 1 to N. * * Since version 1.0.19, \ref LIBUSB_API_VERSION >= 0x01000103 * * \param dev_handle a device handle * \param num_streams number of streams to try to allocate * \param endpoints array of endpoints to allocate streams on * \param num_endpoints length of the endpoints array * \returns number of streams allocated, or a LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_alloc_streams(libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints, int num_endpoints) { usbi_dbg("streams %u eps %d", (unsigned) num_streams, num_endpoints); if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; if (usbi_backend.alloc_streams) return usbi_backend.alloc_streams(dev_handle, num_streams, endpoints, num_endpoints); else return LIBUSB_ERROR_NOT_SUPPORTED; } /** \ingroup libusb_asyncio * Free usb bulk streams allocated with libusb_alloc_streams(). * * Note streams are automatically free-ed when releasing an interface. * * Since version 1.0.19, \ref LIBUSB_API_VERSION >= 0x01000103 * * \param dev_handle a device handle * \param endpoints array of endpoints to free streams on * \param num_endpoints length of the endpoints array * \returns LIBUSB_SUCCESS, or a LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_free_streams(libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints) { usbi_dbg("eps %d", num_endpoints); if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; if (usbi_backend.free_streams) return usbi_backend.free_streams(dev_handle, endpoints, num_endpoints); else return LIBUSB_ERROR_NOT_SUPPORTED; } /** \ingroup libusb_asyncio * Attempts to allocate a block of persistent DMA memory suitable for transfers * against the given device. If successful, will return a block of memory * that is suitable for use as "buffer" in \ref libusb_transfer against this * device. Using this memory instead of regular memory means that the host * controller can use DMA directly into the buffer to increase performance, and * also that transfers can no longer fail due to kernel memory fragmentation. * * Note that this means you should not modify this memory (or even data on * the same cache lines) when a transfer is in progress, although it is legal * to have several transfers going on within the same memory block. * * Will return NULL on failure. Many systems do not support such zerocopy * and will always return NULL. Memory allocated with this function must be * freed with \ref libusb_dev_mem_free. Specifically, this means that the * flag \ref LIBUSB_TRANSFER_FREE_BUFFER cannot be used to free memory allocated * with this function. * * Since version 1.0.21, \ref LIBUSB_API_VERSION >= 0x01000105 * * \param dev_handle a device handle * \param length size of desired data buffer * \returns a pointer to the newly allocated memory, or NULL on failure */ DEFAULT_VISIBILITY unsigned char * LIBUSB_CALL libusb_dev_mem_alloc(libusb_device_handle *dev_handle, size_t length) { if (!dev_handle->dev->attached) return NULL; if (usbi_backend.dev_mem_alloc) return usbi_backend.dev_mem_alloc(dev_handle, length); else return NULL; } /** \ingroup libusb_asyncio * Free device memory allocated with libusb_dev_mem_alloc(). * * \param dev_handle a device handle * \param buffer pointer to the previously allocated memory * \param length size of previously allocated memory * \returns LIBUSB_SUCCESS, or a LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_dev_mem_free(libusb_device_handle *dev_handle, unsigned char *buffer, size_t length) { if (usbi_backend.dev_mem_free) return usbi_backend.dev_mem_free(dev_handle, buffer, length); else return LIBUSB_ERROR_NOT_SUPPORTED; } /** \ingroup libusb_dev * Determine if a kernel driver is active on an interface. If a kernel driver * is active, you cannot claim the interface, and libusb will be unable to * perform I/O. * * This functionality is not available on Windows. * * \param dev_handle a device handle * \param interface_number the interface to check * \returns 0 if no kernel driver is active * \returns 1 if a kernel driver is active * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns LIBUSB_ERROR_NOT_SUPPORTED on platforms where the functionality * is not available * \returns another LIBUSB_ERROR code on other failure * \see libusb_detach_kernel_driver() */ int API_EXPORTED libusb_kernel_driver_active(libusb_device_handle *dev_handle, int interface_number) { usbi_dbg("interface %d", interface_number); if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; if (usbi_backend.kernel_driver_active) return usbi_backend.kernel_driver_active(dev_handle, interface_number); else return LIBUSB_ERROR_NOT_SUPPORTED; } /** \ingroup libusb_dev * Detach a kernel driver from an interface. If successful, you will then be * able to claim the interface and perform I/O. * * This functionality is not available on Darwin or Windows. * * Note that libusb itself also talks to the device through a special kernel * driver, if this driver is already attached to the device, this call will * not detach it and return LIBUSB_ERROR_NOT_FOUND. * * \param dev_handle a device handle * \param interface_number the interface to detach the driver from * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if no kernel driver was active * \returns LIBUSB_ERROR_INVALID_PARAM if the interface does not exist * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns LIBUSB_ERROR_NOT_SUPPORTED on platforms where the functionality * is not available * \returns another LIBUSB_ERROR code on other failure * \see libusb_kernel_driver_active() */ int API_EXPORTED libusb_detach_kernel_driver(libusb_device_handle *dev_handle, int interface_number) { usbi_dbg("interface %d", interface_number); if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; if (usbi_backend.detach_kernel_driver) return usbi_backend.detach_kernel_driver(dev_handle, interface_number); else return LIBUSB_ERROR_NOT_SUPPORTED; } /** \ingroup libusb_dev * Re-attach an interface's kernel driver, which was previously detached * using libusb_detach_kernel_driver(). This call is only effective on * Linux and returns LIBUSB_ERROR_NOT_SUPPORTED on all other platforms. * * This functionality is not available on Darwin or Windows. * * \param dev_handle a device handle * \param interface_number the interface to attach the driver from * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if no kernel driver was active * \returns LIBUSB_ERROR_INVALID_PARAM if the interface does not exist * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns LIBUSB_ERROR_NOT_SUPPORTED on platforms where the functionality * is not available * \returns LIBUSB_ERROR_BUSY if the driver cannot be attached because the * interface is claimed by a program or driver * \returns another LIBUSB_ERROR code on other failure * \see libusb_kernel_driver_active() */ int API_EXPORTED libusb_attach_kernel_driver(libusb_device_handle *dev_handle, int interface_number) { usbi_dbg("interface %d", interface_number); if (!dev_handle->dev->attached) return LIBUSB_ERROR_NO_DEVICE; if (usbi_backend.attach_kernel_driver) return usbi_backend.attach_kernel_driver(dev_handle, interface_number); else return LIBUSB_ERROR_NOT_SUPPORTED; } /** \ingroup libusb_dev * Enable/disable libusb's automatic kernel driver detachment. When this is * enabled libusb will automatically detach the kernel driver on an interface * when claiming the interface, and attach it when releasing the interface. * * Automatic kernel driver detachment is disabled on newly opened device * handles by default. * * On platforms which do not have LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER * this function will return LIBUSB_ERROR_NOT_SUPPORTED, and libusb will * continue as if this function was never called. * * \param dev_handle a device handle * \param enable whether to enable or disable auto kernel driver detachment * * \returns LIBUSB_SUCCESS on success * \returns LIBUSB_ERROR_NOT_SUPPORTED on platforms where the functionality * is not available * \see libusb_claim_interface() * \see libusb_release_interface() * \see libusb_set_configuration() */ int API_EXPORTED libusb_set_auto_detach_kernel_driver( libusb_device_handle *dev_handle, int enable) { if (!(usbi_backend.caps & USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) return LIBUSB_ERROR_NOT_SUPPORTED; dev_handle->auto_detach_kernel_driver = enable; return LIBUSB_SUCCESS; } /** \ingroup libusb_lib * \deprecated Use libusb_set_option() instead using the * \ref LIBUSB_OPTION_LOG_LEVEL option. */ void API_EXPORTED libusb_set_debug(libusb_context *ctx, int level) { #if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING) USBI_GET_CONTEXT(ctx); if (!ctx->debug_fixed) { level = CLAMP(level, LIBUSB_LOG_LEVEL_NONE, LIBUSB_LOG_LEVEL_DEBUG); ctx->debug = (enum libusb_log_level)level; } #else UNUSED(ctx); UNUSED(level); #endif } /** \ingroup libusb_lib * Set an option in the library. * * Use this function to configure a specific option within the library. * * Some options require one or more arguments to be provided. Consult each * option's documentation for specific requirements. * * Since version 1.0.22, \ref LIBUSB_API_VERSION >= 0x01000106 * * \param ctx context on which to operate * \param option which option to set * \param ... any required arguments for the specified option * * \returns LIBUSB_SUCCESS on success * \returns LIBUSB_ERROR_INVALID_PARAM if the option or arguments are invalid * \returns LIBUSB_ERROR_NOT_SUPPORTED if the option is valid but not supported * on this platform */ int API_EXPORTED libusb_set_option(libusb_context *ctx, enum libusb_option option, ...) { int arg, r = LIBUSB_SUCCESS; va_list ap; USBI_GET_CONTEXT(ctx); va_start(ap, option); switch (option) { case LIBUSB_OPTION_LOG_LEVEL: arg = va_arg(ap, int); if (arg < LIBUSB_LOG_LEVEL_NONE || arg > LIBUSB_LOG_LEVEL_DEBUG) { r = LIBUSB_ERROR_INVALID_PARAM; break; } #if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING) if (!ctx->debug_fixed) ctx->debug = (enum libusb_log_level)arg; #endif break; /* Handle all backend-specific options here */ case LIBUSB_OPTION_USE_USBDK: if (usbi_backend.set_option) r = usbi_backend.set_option(ctx, option, ap); else r = LIBUSB_ERROR_NOT_SUPPORTED; break; default: r = LIBUSB_ERROR_INVALID_PARAM; } va_end(ap); return r; } #if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING) /* returns the log level as defined in the LIBUSB_DEBUG environment variable. * if LIBUSB_DEBUG is not present or not a number, returns LIBUSB_LOG_LEVEL_NONE. * value is clamped to ensure it is within the valid range of possibilities. */ static enum libusb_log_level get_env_debug_level(void) { const char *dbg = getenv("LIBUSB_DEBUG"); enum libusb_log_level level; if (dbg) { int dbg_level = atoi(dbg); dbg_level = CLAMP(dbg_level, LIBUSB_LOG_LEVEL_NONE, LIBUSB_LOG_LEVEL_DEBUG); level = (enum libusb_log_level)dbg_level; } else { level = LIBUSB_LOG_LEVEL_NONE; } return level; } #endif /** \ingroup libusb_lib * Initialize libusb. This function must be called before calling any other * libusb function. * * If you do not provide an output location for a context pointer, a default * context will be created. If there was already a default context, it will * be reused (and nothing will be initialized/reinitialized). * * \param context Optional output location for context pointer. * Only valid on return code 0. * \returns 0 on success, or a LIBUSB_ERROR code on failure * \see libusb_contexts */ int API_EXPORTED libusb_init(libusb_context **context) { struct libusb_device *dev, *next; size_t priv_size = usbi_backend.context_priv_size; struct libusb_context *ctx; static int first_init = 1; int r = 0; usbi_mutex_static_lock(&default_context_lock); if (!timestamp_origin.tv_sec) { usbi_backend.clock_gettime(USBI_CLOCK_REALTIME, ×tamp_origin); } if (!context && usbi_default_context) { usbi_dbg("reusing default context"); default_context_refcnt++; usbi_mutex_static_unlock(&default_context_lock); return 0; } ctx = calloc(1, sizeof(*ctx) + priv_size); if (!ctx) { r = LIBUSB_ERROR_NO_MEM; goto err_unlock; } #if defined(ENABLE_LOGGING) && !defined(ENABLE_DEBUG_LOGGING) ctx->debug = get_env_debug_level(); if (ctx->debug != LIBUSB_LOG_LEVEL_NONE) ctx->debug_fixed = 1; #endif /* default context should be initialized before calling usbi_dbg */ if (!usbi_default_context) { usbi_default_context = ctx; default_context_refcnt++; usbi_dbg("created default context"); } usbi_dbg("libusb v%u.%u.%u.%u%s", libusb_version_internal.major, libusb_version_internal.minor, libusb_version_internal.micro, libusb_version_internal.nano, libusb_version_internal.rc); usbi_mutex_init(&ctx->usb_devs_lock); usbi_mutex_init(&ctx->open_devs_lock); usbi_mutex_init(&ctx->hotplug_cbs_lock); list_init(&ctx->usb_devs); list_init(&ctx->open_devs); list_init(&ctx->hotplug_cbs); ctx->next_hotplug_cb_handle = 1; usbi_mutex_static_lock(&active_contexts_lock); if (first_init) { first_init = 0; list_init (&active_contexts_list); } list_add (&ctx->list, &active_contexts_list); usbi_mutex_static_unlock(&active_contexts_lock); if (usbi_backend.init) { r = usbi_backend.init(ctx); if (r) goto err_free_ctx; } r = usbi_io_init(ctx); if (r < 0) goto err_backend_exit; usbi_mutex_static_unlock(&default_context_lock); if (context) *context = ctx; return 0; err_backend_exit: if (usbi_backend.exit) usbi_backend.exit(ctx); err_free_ctx: if (ctx == usbi_default_context) { usbi_default_context = NULL; default_context_refcnt--; } usbi_mutex_static_lock(&active_contexts_lock); list_del (&ctx->list); usbi_mutex_static_unlock(&active_contexts_lock); usbi_mutex_lock(&ctx->usb_devs_lock); list_for_each_entry_safe(dev, next, &ctx->usb_devs, list, struct libusb_device) { list_del(&dev->list); libusb_unref_device(dev); } usbi_mutex_unlock(&ctx->usb_devs_lock); usbi_mutex_destroy(&ctx->open_devs_lock); usbi_mutex_destroy(&ctx->usb_devs_lock); usbi_mutex_destroy(&ctx->hotplug_cbs_lock); free(ctx); err_unlock: usbi_mutex_static_unlock(&default_context_lock); return r; } /** \ingroup libusb_lib * Deinitialize libusb. Should be called after closing all open devices and * before your application terminates. * \param ctx the context to deinitialize, or NULL for the default context */ void API_EXPORTED libusb_exit(struct libusb_context *ctx) { struct libusb_device *dev, *next; struct timeval tv = { 0, 0 }; usbi_dbg(""); USBI_GET_CONTEXT(ctx); /* if working with default context, only actually do the deinitialization * if we're the last user */ usbi_mutex_static_lock(&default_context_lock); if (ctx == usbi_default_context) { if (--default_context_refcnt > 0) { usbi_dbg("not destroying default context"); usbi_mutex_static_unlock(&default_context_lock); return; } usbi_dbg("destroying default context"); usbi_default_context = NULL; } usbi_mutex_static_unlock(&default_context_lock); usbi_mutex_static_lock(&active_contexts_lock); list_del (&ctx->list); usbi_mutex_static_unlock(&active_contexts_lock); if (libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { usbi_hotplug_deregister(ctx, 1); /* * Ensure any pending unplug events are read from the hotplug * pipe. The usb_device-s hold in the events are no longer part * of usb_devs, but the events still hold a reference! * * Note we don't do this if the application has left devices * open (which implies a buggy app) to avoid packet completion * handlers running when the app does not expect them to run. */ if (list_empty(&ctx->open_devs)) libusb_handle_events_timeout(ctx, &tv); usbi_mutex_lock(&ctx->usb_devs_lock); list_for_each_entry_safe(dev, next, &ctx->usb_devs, list, struct libusb_device) { list_del(&dev->list); libusb_unref_device(dev); } usbi_mutex_unlock(&ctx->usb_devs_lock); } /* a few sanity checks. don't bother with locking because unless * there is an application bug, nobody will be accessing these. */ if (!list_empty(&ctx->usb_devs)) usbi_warn(ctx, "some libusb_devices were leaked"); if (!list_empty(&ctx->open_devs)) usbi_warn(ctx, "application left some devices open"); usbi_io_exit(ctx); if (usbi_backend.exit) usbi_backend.exit(ctx); usbi_mutex_destroy(&ctx->open_devs_lock); usbi_mutex_destroy(&ctx->usb_devs_lock); usbi_mutex_destroy(&ctx->hotplug_cbs_lock); free(ctx); } /** \ingroup libusb_misc * Check at runtime if the loaded library has a given capability. * This call should be performed after \ref libusb_init(), to ensure the * backend has updated its capability set. * * \param capability the \ref libusb_capability to check for * \returns nonzero if the running library has the capability, 0 otherwise */ int API_EXPORTED libusb_has_capability(uint32_t capability) { switch (capability) { case LIBUSB_CAP_HAS_CAPABILITY: return 1; case LIBUSB_CAP_HAS_HOTPLUG: return !(usbi_backend.get_device_list); case LIBUSB_CAP_HAS_HID_ACCESS: return (usbi_backend.caps & USBI_CAP_HAS_HID_ACCESS); case LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER: return (usbi_backend.caps & USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER); } return 0; } #ifdef ENABLE_LOGGING /* this is defined in libusbi.h if needed */ #ifdef LIBUSB_PRINTF_WIN32 /* * Prior to VS2015, Microsoft did not provide the snprintf() function and * provided a vsnprintf() that did not guarantee NULL-terminated output. * Microsoft did provide a _snprintf() function, but again it did not * guarantee NULL-terminated output. * * The below implementations guarantee NULL-terminated output and are * C99 compliant. */ int usbi_snprintf(char *str, size_t size, const char *format, ...) { va_list ap; int ret; va_start(ap, format); ret = usbi_vsnprintf(str, size, format, ap); va_end(ap); return ret; } int usbi_vsnprintf(char *str, size_t size, const char *format, va_list ap) { int ret; ret = _vsnprintf(str, size, format, ap); if (ret < 0 || ret == (int)size) { /* Output is truncated, ensure buffer is NULL-terminated and * determine how many characters would have been written. */ str[size - 1] = '\0'; if (ret < 0) ret = _vsnprintf(NULL, 0, format, ap); } return ret; } #endif /* LIBUSB_PRINTF_WIN32 */ static void usbi_log_str(enum libusb_log_level level, const char *str) { #if defined(USE_SYSTEM_LOGGING_FACILITY) #if defined(OS_WINDOWS) OutputDebugString(str); #elif defined(OS_WINCE) /* Windows CE only supports the Unicode version of OutputDebugString. */ WCHAR wbuf[USBI_MAX_LOG_LEN]; MultiByteToWideChar(CP_UTF8, 0, str, -1, wbuf, sizeof(wbuf)); OutputDebugStringW(wbuf); #elif defined(__ANDROID__) int priority = ANDROID_LOG_UNKNOWN; switch (level) { case LIBUSB_LOG_LEVEL_NONE: return; case LIBUSB_LOG_LEVEL_ERROR: priority = ANDROID_LOG_ERROR; break; case LIBUSB_LOG_LEVEL_WARNING: priority = ANDROID_LOG_WARN; break; case LIBUSB_LOG_LEVEL_INFO: priority = ANDROID_LOG_INFO; break; case LIBUSB_LOG_LEVEL_DEBUG: priority = ANDROID_LOG_DEBUG; break; } __android_log_write(priority, "libusb", str); #elif defined(HAVE_SYSLOG_FUNC) int syslog_level = LOG_INFO; switch (level) { case LIBUSB_LOG_LEVEL_NONE: return; case LIBUSB_LOG_LEVEL_ERROR: syslog_level = LOG_ERR; break; case LIBUSB_LOG_LEVEL_WARNING: syslog_level = LOG_WARNING; break; case LIBUSB_LOG_LEVEL_INFO: syslog_level = LOG_INFO; break; case LIBUSB_LOG_LEVEL_DEBUG: syslog_level = LOG_DEBUG; break; } syslog(syslog_level, "%s", str); #else /* All of gcc, Clang, XCode seem to use #warning */ #warning System logging is not supported on this platform. Logging to stderr will be used instead. fputs(str, stderr); #endif #else fputs(str, stderr); #endif /* USE_SYSTEM_LOGGING_FACILITY */ UNUSED(level); } void usbi_log_v(struct libusb_context *ctx, enum libusb_log_level level, const char *function, const char *format, va_list args) { const char *prefix; char buf[USBI_MAX_LOG_LEN]; struct timespec now; int global_debug, header_len, text_len; static int has_debug_header_been_displayed = 0; #ifdef ENABLE_DEBUG_LOGGING global_debug = 1; UNUSED(ctx); #else enum libusb_log_level ctx_level = LIBUSB_LOG_LEVEL_NONE; USBI_GET_CONTEXT(ctx); if (ctx) ctx_level = ctx->debug; else ctx_level = get_env_debug_level(); if (ctx_level == LIBUSB_LOG_LEVEL_NONE) return; if (level == LIBUSB_LOG_LEVEL_WARNING && ctx_level < LIBUSB_LOG_LEVEL_WARNING) return; if (level == LIBUSB_LOG_LEVEL_INFO && ctx_level < LIBUSB_LOG_LEVEL_INFO) return; if (level == LIBUSB_LOG_LEVEL_DEBUG && ctx_level < LIBUSB_LOG_LEVEL_DEBUG) return; global_debug = (ctx_level == LIBUSB_LOG_LEVEL_DEBUG); #endif usbi_backend.clock_gettime(USBI_CLOCK_REALTIME, &now); if ((global_debug) && (!has_debug_header_been_displayed)) { has_debug_header_been_displayed = 1; usbi_log_str(LIBUSB_LOG_LEVEL_DEBUG, "[timestamp] [threadID] facility level [function call] " USBI_LOG_LINE_END); usbi_log_str(LIBUSB_LOG_LEVEL_DEBUG, "--------------------------------------------------------------------------------" USBI_LOG_LINE_END); } if (now.tv_nsec < timestamp_origin.tv_nsec) { now.tv_sec--; now.tv_nsec += 1000000000L; } now.tv_sec -= timestamp_origin.tv_sec; now.tv_nsec -= timestamp_origin.tv_nsec; switch (level) { case LIBUSB_LOG_LEVEL_NONE: return; case LIBUSB_LOG_LEVEL_ERROR: prefix = "error"; break; case LIBUSB_LOG_LEVEL_WARNING: prefix = "warning"; break; case LIBUSB_LOG_LEVEL_INFO: prefix = "info"; break; case LIBUSB_LOG_LEVEL_DEBUG: prefix = "debug"; break; default: prefix = "unknown"; break; } if (global_debug) { header_len = snprintf(buf, sizeof(buf), "[%2d.%06d] [%08x] libusb: %s [%s] ", (int)now.tv_sec, (int)(now.tv_nsec / 1000L), usbi_get_tid(), prefix, function); } else { header_len = snprintf(buf, sizeof(buf), "libusb: %s [%s] ", prefix, function); } if (header_len < 0 || header_len >= (int)sizeof(buf)) { /* Somehow snprintf failed to write to the buffer, * remove the header so something useful is output. */ header_len = 0; } /* Make sure buffer is NUL terminated */ buf[header_len] = '\0'; text_len = vsnprintf(buf + header_len, sizeof(buf) - header_len, format, args); if (text_len < 0 || text_len + header_len >= (int)sizeof(buf)) { /* Truncated log output. On some platforms a -1 return value means * that the output was truncated. */ text_len = sizeof(buf) - header_len; } if (header_len + text_len + sizeof(USBI_LOG_LINE_END) >= sizeof(buf)) { /* Need to truncate the text slightly to fit on the terminator. */ text_len -= (header_len + text_len + sizeof(USBI_LOG_LINE_END)) - sizeof(buf); } strcpy(buf + header_len + text_len, USBI_LOG_LINE_END); usbi_log_str(level, buf); } void usbi_log(struct libusb_context *ctx, enum libusb_log_level level, const char *function, const char *format, ...) { va_list args; va_start (args, format); usbi_log_v(ctx, level, function, format, args); va_end (args); } #endif /* ENABLE_LOGGING */ /** \ingroup libusb_misc * Returns a constant NULL-terminated string with the ASCII name of a libusb * error or transfer status code. The caller must not free() the returned * string. * * \param error_code The \ref libusb_error or libusb_transfer_status code to * return the name of. * \returns The error name, or the string **UNKNOWN** if the value of * error_code is not a known error / status code. */ DEFAULT_VISIBILITY const char * LIBUSB_CALL libusb_error_name(int error_code) { switch (error_code) { case LIBUSB_ERROR_IO: return "LIBUSB_ERROR_IO"; case LIBUSB_ERROR_INVALID_PARAM: return "LIBUSB_ERROR_INVALID_PARAM"; case LIBUSB_ERROR_ACCESS: return "LIBUSB_ERROR_ACCESS"; case LIBUSB_ERROR_NO_DEVICE: return "LIBUSB_ERROR_NO_DEVICE"; case LIBUSB_ERROR_NOT_FOUND: return "LIBUSB_ERROR_NOT_FOUND"; case LIBUSB_ERROR_BUSY: return "LIBUSB_ERROR_BUSY"; case LIBUSB_ERROR_TIMEOUT: return "LIBUSB_ERROR_TIMEOUT"; case LIBUSB_ERROR_OVERFLOW: return "LIBUSB_ERROR_OVERFLOW"; case LIBUSB_ERROR_PIPE: return "LIBUSB_ERROR_PIPE"; case LIBUSB_ERROR_INTERRUPTED: return "LIBUSB_ERROR_INTERRUPTED"; case LIBUSB_ERROR_NO_MEM: return "LIBUSB_ERROR_NO_MEM"; case LIBUSB_ERROR_NOT_SUPPORTED: return "LIBUSB_ERROR_NOT_SUPPORTED"; case LIBUSB_ERROR_OTHER: return "LIBUSB_ERROR_OTHER"; case LIBUSB_TRANSFER_ERROR: return "LIBUSB_TRANSFER_ERROR"; case LIBUSB_TRANSFER_TIMED_OUT: return "LIBUSB_TRANSFER_TIMED_OUT"; case LIBUSB_TRANSFER_CANCELLED: return "LIBUSB_TRANSFER_CANCELLED"; case LIBUSB_TRANSFER_STALL: return "LIBUSB_TRANSFER_STALL"; case LIBUSB_TRANSFER_NO_DEVICE: return "LIBUSB_TRANSFER_NO_DEVICE"; case LIBUSB_TRANSFER_OVERFLOW: return "LIBUSB_TRANSFER_OVERFLOW"; case 0: return "LIBUSB_SUCCESS / LIBUSB_TRANSFER_COMPLETED"; default: return "**UNKNOWN**"; } } /** \ingroup libusb_misc * Returns a pointer to const struct libusb_version with the version * (major, minor, micro, nano and rc) of the running library. */ DEFAULT_VISIBILITY const struct libusb_version * LIBUSB_CALL libusb_get_version(void) { return &libusb_version_internal; } release/libusb/libusb/hotplug.c0000664000000000000000000003001714261476162015576 0ustar rootroot/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */ /* * Hotplug functions for libusb * Copyright © 2012-2013 Nathan Hjelm * Copyright © 2012-2013 Peter Stuge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #ifdef HAVE_SYS_TYPES_H #include #endif #include #include "libusbi.h" #include "hotplug.h" /** * @defgroup libusb_hotplug Device hotplug event notification * This page details how to use the libusb hotplug interface, where available. * * Be mindful that not all platforms currently implement hotplug notification and * that you should first call on \ref libusb_has_capability() with parameter * \ref LIBUSB_CAP_HAS_HOTPLUG to confirm that hotplug support is available. * * \page libusb_hotplug Device hotplug event notification * * \section hotplug_intro Introduction * * Version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102, has added support * for hotplug events on some platforms (you should test if your platform * supports hotplug notification by calling \ref libusb_has_capability() with * parameter \ref LIBUSB_CAP_HAS_HOTPLUG). * * This interface allows you to request notification for the arrival and departure * of matching USB devices. * * To receive hotplug notification you register a callback by calling * \ref libusb_hotplug_register_callback(). This function will optionally return * a callback handle that can be passed to \ref libusb_hotplug_deregister_callback(). * * A callback function must return an int (0 or 1) indicating whether the callback is * expecting additional events. Returning 0 will rearm the callback and 1 will cause * the callback to be deregistered. Note that when callbacks are called from * libusb_hotplug_register_callback() because of the \ref LIBUSB_HOTPLUG_ENUMERATE * flag, the callback return value is ignored, iow you cannot cause a callback * to be deregistered by returning 1 when it is called from * libusb_hotplug_register_callback(). * * Callbacks for a particular context are automatically deregistered by libusb_exit(). * * As of 1.0.16 there are two supported hotplug events: * - LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED: A device has arrived and is ready to use * - LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT: A device has left and is no longer available * * A hotplug event can listen for either or both of these events. * * Note: If you receive notification that a device has left and you have any * a libusb_device_handles for the device it is up to you to call libusb_close() * on each device handle to free up any remaining resources associated with the device. * Once a device has left any libusb_device_handle associated with the device * are invalid and will remain so even if the device comes back. * * When handling a LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED event it is considered * safe to call any libusb function that takes a libusb_device. It also safe to * open a device and submit asynchronous transfers. However, most other functions * that take a libusb_device_handle are not safe to call. Examples of such * functions are any of the \ref libusb_syncio "synchronous API" functions or the blocking * functions that retrieve various \ref libusb_desc "USB descriptors". These functions must * be used outside of the context of the hotplug callback. * * When handling a LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT event the only safe function * is libusb_get_device_descriptor(). * * The following code provides an example of the usage of the hotplug interface: \code #include #include #include #include static int count = 0; int hotplug_callback(struct libusb_context *ctx, struct libusb_device *dev, libusb_hotplug_event event, void *user_data) { static libusb_device_handle *dev_handle = NULL; struct libusb_device_descriptor desc; int rc; (void)libusb_get_device_descriptor(dev, &desc); if (LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED == event) { rc = libusb_open(dev, &dev_handle); if (LIBUSB_SUCCESS != rc) { printf("Could not open USB device\n"); } } else if (LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT == event) { if (dev_handle) { libusb_close(dev_handle); dev_handle = NULL; } } else { printf("Unhandled event %d\n", event); } count++; return 0; } int main (void) { libusb_hotplug_callback_handle callback_handle; int rc; libusb_init(NULL); rc = libusb_hotplug_register_callback(NULL, LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED | LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT, 0, 0x045a, 0x5005, LIBUSB_HOTPLUG_MATCH_ANY, hotplug_callback, NULL, &callback_handle); if (LIBUSB_SUCCESS != rc) { printf("Error creating a hotplug callback\n"); libusb_exit(NULL); return EXIT_FAILURE; } while (count < 2) { libusb_handle_events_completed(NULL, NULL); nanosleep(&(struct timespec){0, 10000000UL}, NULL); } libusb_hotplug_deregister_callback(NULL, callback_handle); libusb_exit(NULL); return 0; } \endcode */ static int usbi_hotplug_match_cb(struct libusb_context *ctx, struct libusb_device *dev, libusb_hotplug_event event, struct libusb_hotplug_callback *hotplug_cb) { if (!(hotplug_cb->flags & event)) { return 0; } if ((hotplug_cb->flags & USBI_HOTPLUG_VENDOR_ID_VALID) && hotplug_cb->vendor_id != dev->device_descriptor.idVendor) { return 0; } if ((hotplug_cb->flags & USBI_HOTPLUG_PRODUCT_ID_VALID) && hotplug_cb->product_id != dev->device_descriptor.idProduct) { return 0; } if ((hotplug_cb->flags & USBI_HOTPLUG_DEV_CLASS_VALID) && hotplug_cb->dev_class != dev->device_descriptor.bDeviceClass) { return 0; } return hotplug_cb->cb(ctx, dev, event, hotplug_cb->user_data); } void usbi_hotplug_match(struct libusb_context *ctx, struct libusb_device *dev, libusb_hotplug_event event) { struct libusb_hotplug_callback *hotplug_cb, *next; int ret; usbi_mutex_lock(&ctx->hotplug_cbs_lock); list_for_each_entry_safe(hotplug_cb, next, &ctx->hotplug_cbs, list, struct libusb_hotplug_callback) { if (hotplug_cb->flags & USBI_HOTPLUG_NEEDS_FREE) { /* process deregistration in usbi_hotplug_deregister() */ continue; } usbi_mutex_unlock(&ctx->hotplug_cbs_lock); ret = usbi_hotplug_match_cb(ctx, dev, event, hotplug_cb); usbi_mutex_lock(&ctx->hotplug_cbs_lock); if (ret) { list_del(&hotplug_cb->list); free(hotplug_cb); } } usbi_mutex_unlock(&ctx->hotplug_cbs_lock); } void usbi_hotplug_notification(struct libusb_context *ctx, struct libusb_device *dev, libusb_hotplug_event event) { int pending_events; struct libusb_hotplug_message *message = calloc(1, sizeof(*message)); if (!message) { usbi_err(ctx, "error allocating hotplug message"); return; } message->event = event; message->device = dev; /* Take the event data lock and add this message to the list. * Only signal an event if there are no prior pending events. */ usbi_mutex_lock(&ctx->event_data_lock); pending_events = usbi_pending_events(ctx); list_add_tail(&message->list, &ctx->hotplug_msgs); if (!pending_events) usbi_signal_event(ctx); usbi_mutex_unlock(&ctx->event_data_lock); } int API_EXPORTED libusb_hotplug_register_callback(libusb_context *ctx, libusb_hotplug_event events, libusb_hotplug_flag flags, int vendor_id, int product_id, int dev_class, libusb_hotplug_callback_fn cb_fn, void *user_data, libusb_hotplug_callback_handle *callback_handle) { struct libusb_hotplug_callback *new_callback; /* check for sane values */ if ((!events || (~(LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED | LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT) & events)) || (flags && (~LIBUSB_HOTPLUG_ENUMERATE & flags)) || (LIBUSB_HOTPLUG_MATCH_ANY != vendor_id && (~0xffff & vendor_id)) || (LIBUSB_HOTPLUG_MATCH_ANY != product_id && (~0xffff & product_id)) || (LIBUSB_HOTPLUG_MATCH_ANY != dev_class && (~0xff & dev_class)) || !cb_fn) { return LIBUSB_ERROR_INVALID_PARAM; } /* check for hotplug support */ if (!libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { return LIBUSB_ERROR_NOT_SUPPORTED; } USBI_GET_CONTEXT(ctx); new_callback = calloc(1, sizeof(*new_callback)); if (!new_callback) { return LIBUSB_ERROR_NO_MEM; } new_callback->flags = (uint8_t)events; if (LIBUSB_HOTPLUG_MATCH_ANY != vendor_id) { new_callback->flags |= USBI_HOTPLUG_VENDOR_ID_VALID; new_callback->vendor_id = (uint16_t)vendor_id; } if (LIBUSB_HOTPLUG_MATCH_ANY != product_id) { new_callback->flags |= USBI_HOTPLUG_PRODUCT_ID_VALID; new_callback->product_id = (uint16_t)product_id; } if (LIBUSB_HOTPLUG_MATCH_ANY != dev_class) { new_callback->flags |= USBI_HOTPLUG_DEV_CLASS_VALID; new_callback->dev_class = (uint8_t)dev_class; } new_callback->cb = cb_fn; new_callback->user_data = user_data; usbi_mutex_lock(&ctx->hotplug_cbs_lock); /* protect the handle by the context hotplug lock */ new_callback->handle = ctx->next_hotplug_cb_handle++; /* handle the unlikely case of overflow */ if (ctx->next_hotplug_cb_handle < 0) ctx->next_hotplug_cb_handle = 1; list_add(&new_callback->list, &ctx->hotplug_cbs); usbi_mutex_unlock(&ctx->hotplug_cbs_lock); usbi_dbg("new hotplug cb %p with handle %d", new_callback, new_callback->handle); if ((flags & LIBUSB_HOTPLUG_ENUMERATE) && (events & LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED)) { ssize_t i, len; struct libusb_device **devs; len = libusb_get_device_list(ctx, &devs); if (len < 0) { libusb_hotplug_deregister_callback(ctx, new_callback->handle); return (int)len; } for (i = 0; i < len; i++) { usbi_hotplug_match_cb(ctx, devs[i], LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED, new_callback); } libusb_free_device_list(devs, 1); } if (callback_handle) *callback_handle = new_callback->handle; return LIBUSB_SUCCESS; } void API_EXPORTED libusb_hotplug_deregister_callback(struct libusb_context *ctx, libusb_hotplug_callback_handle callback_handle) { struct libusb_hotplug_callback *hotplug_cb; int deregistered = 0; /* check for hotplug support */ if (!libusb_has_capability(LIBUSB_CAP_HAS_HOTPLUG)) { return; } USBI_GET_CONTEXT(ctx); usbi_dbg("deregister hotplug cb %d", callback_handle); usbi_mutex_lock(&ctx->hotplug_cbs_lock); list_for_each_entry(hotplug_cb, &ctx->hotplug_cbs, list, struct libusb_hotplug_callback) { if (callback_handle == hotplug_cb->handle) { /* Mark this callback for deregistration */ hotplug_cb->flags |= USBI_HOTPLUG_NEEDS_FREE; deregistered = 1; } } usbi_mutex_unlock(&ctx->hotplug_cbs_lock); if (deregistered) { int pending_events; usbi_mutex_lock(&ctx->event_data_lock); pending_events = usbi_pending_events(ctx); ctx->event_flags |= USBI_EVENT_HOTPLUG_CB_DEREGISTERED; if (!pending_events) usbi_signal_event(ctx); usbi_mutex_unlock(&ctx->event_data_lock); } } void usbi_hotplug_deregister(struct libusb_context *ctx, int forced) { struct libusb_hotplug_callback *hotplug_cb, *next; usbi_mutex_lock(&ctx->hotplug_cbs_lock); list_for_each_entry_safe(hotplug_cb, next, &ctx->hotplug_cbs, list, struct libusb_hotplug_callback) { if (forced || (hotplug_cb->flags & USBI_HOTPLUG_NEEDS_FREE)) { usbi_dbg("freeing hotplug cb %p with handle %d", hotplug_cb, hotplug_cb->handle); list_del(&hotplug_cb->list); free(hotplug_cb); } } usbi_mutex_unlock(&ctx->hotplug_cbs_lock); } release/libusb/libusb/os/0000775000000000000000000000000014261476162014370 5ustar rootrootrelease/libusb/libusb/os/linux_usbfs.h0000664000000000000000000001365114261476162017110 0ustar rootroot/* * usbfs header structures * Copyright © 2007 Daniel Drake * Copyright © 2001 Johannes Erdfelt * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBUSB_USBFS_H #define LIBUSB_USBFS_H #include #define SYSFS_DEVICE_PATH "/sys/bus/usb/devices" struct usbfs_ctrltransfer { /* keep in sync with usbdevice_fs.h:usbdevfs_ctrltransfer */ uint8_t bmRequestType; uint8_t bRequest; uint16_t wValue; uint16_t wIndex; uint16_t wLength; uint32_t timeout; /* in milliseconds */ /* pointer to data */ void *data; }; struct usbfs_bulktransfer { /* keep in sync with usbdevice_fs.h:usbdevfs_bulktransfer */ unsigned int ep; unsigned int len; unsigned int timeout; /* in milliseconds */ /* pointer to data */ void *data; }; struct usbfs_setinterface { /* keep in sync with usbdevice_fs.h:usbdevfs_setinterface */ unsigned int interface; unsigned int altsetting; }; #define USBFS_MAXDRIVERNAME 255 struct usbfs_getdriver { unsigned int interface; char driver[USBFS_MAXDRIVERNAME + 1]; }; #define USBFS_URB_SHORT_NOT_OK 0x01 #define USBFS_URB_ISO_ASAP 0x02 #define USBFS_URB_BULK_CONTINUATION 0x04 #define USBFS_URB_QUEUE_BULK 0x10 #define USBFS_URB_ZERO_PACKET 0x40 enum usbfs_urb_type { USBFS_URB_TYPE_ISO = 0, USBFS_URB_TYPE_INTERRUPT = 1, USBFS_URB_TYPE_CONTROL = 2, USBFS_URB_TYPE_BULK = 3, }; struct usbfs_iso_packet_desc { unsigned int length; unsigned int actual_length; unsigned int status; }; #define MAX_BULK_BUFFER_LENGTH 16384 #define MAX_CTRL_BUFFER_LENGTH 4096 #define MAX_ISO_PACKETS_PER_URB 128 struct usbfs_urb { unsigned char type; unsigned char endpoint; int status; unsigned int flags; void *buffer; int buffer_length; int actual_length; int start_frame; union { int number_of_packets; /* Only used for isoc urbs */ unsigned int stream_id; /* Only used with bulk streams */ }; int error_count; unsigned int signr; void *usercontext; struct usbfs_iso_packet_desc iso_frame_desc[0]; }; struct usbfs_connectinfo { unsigned int devnum; unsigned char slow; }; struct usbfs_ioctl { int ifno; /* interface 0..N ; negative numbers reserved */ int ioctl_code; /* MUST encode size + direction of data so the * macros in give correct values */ void *data; /* param buffer (in, or out) */ }; struct usbfs_hub_portinfo { unsigned char numports; unsigned char port[127]; /* port to device num mapping */ }; #define USBFS_CAP_ZERO_PACKET 0x01 #define USBFS_CAP_BULK_CONTINUATION 0x02 #define USBFS_CAP_NO_PACKET_SIZE_LIM 0x04 #define USBFS_CAP_BULK_SCATTER_GATHER 0x08 #define USBFS_CAP_REAP_AFTER_DISCONNECT 0x10 #define USBFS_DISCONNECT_CLAIM_IF_DRIVER 0x01 #define USBFS_DISCONNECT_CLAIM_EXCEPT_DRIVER 0x02 struct usbfs_disconnect_claim { unsigned int interface; unsigned int flags; char driver[USBFS_MAXDRIVERNAME + 1]; }; struct usbfs_streams { unsigned int num_streams; /* Not used by USBDEVFS_FREE_STREAMS */ unsigned int num_eps; unsigned char eps[0]; }; #define IOCTL_USBFS_CONTROL _IOWR('U', 0, struct usbfs_ctrltransfer) #define IOCTL_USBFS_BULK _IOWR('U', 2, struct usbfs_bulktransfer) #define IOCTL_USBFS_RESETEP _IOR('U', 3, unsigned int) #define IOCTL_USBFS_SETINTF _IOR('U', 4, struct usbfs_setinterface) #define IOCTL_USBFS_SETCONFIG _IOR('U', 5, unsigned int) #define IOCTL_USBFS_GETDRIVER _IOW('U', 8, struct usbfs_getdriver) #define IOCTL_USBFS_SUBMITURB _IOR('U', 10, struct usbfs_urb) #define IOCTL_USBFS_DISCARDURB _IO('U', 11) #define IOCTL_USBFS_REAPURB _IOW('U', 12, void *) #define IOCTL_USBFS_REAPURBNDELAY _IOW('U', 13, void *) #define IOCTL_USBFS_CLAIMINTF _IOR('U', 15, unsigned int) #define IOCTL_USBFS_RELEASEINTF _IOR('U', 16, unsigned int) #define IOCTL_USBFS_CONNECTINFO _IOW('U', 17, struct usbfs_connectinfo) #define IOCTL_USBFS_IOCTL _IOWR('U', 18, struct usbfs_ioctl) #define IOCTL_USBFS_HUB_PORTINFO _IOR('U', 19, struct usbfs_hub_portinfo) #define IOCTL_USBFS_RESET _IO('U', 20) #define IOCTL_USBFS_CLEAR_HALT _IOR('U', 21, unsigned int) #define IOCTL_USBFS_DISCONNECT _IO('U', 22) #define IOCTL_USBFS_CONNECT _IO('U', 23) #define IOCTL_USBFS_CLAIM_PORT _IOR('U', 24, unsigned int) #define IOCTL_USBFS_RELEASE_PORT _IOR('U', 25, unsigned int) #define IOCTL_USBFS_GET_CAPABILITIES _IOR('U', 26, __u32) #define IOCTL_USBFS_DISCONNECT_CLAIM _IOR('U', 27, struct usbfs_disconnect_claim) #define IOCTL_USBFS_ALLOC_STREAMS _IOR('U', 28, struct usbfs_streams) #define IOCTL_USBFS_FREE_STREAMS _IOR('U', 29, struct usbfs_streams) extern usbi_mutex_static_t linux_hotplug_lock; #if defined(HAVE_LIBUDEV) int linux_udev_start_event_monitor(void); int linux_udev_stop_event_monitor(void); int linux_udev_scan_devices(struct libusb_context *ctx); void linux_udev_hotplug_poll(void); #else int linux_netlink_start_event_monitor(void); int linux_netlink_stop_event_monitor(void); void linux_netlink_hotplug_poll(void); #endif void linux_hotplug_enumerate(uint8_t busnum, uint8_t devaddr, const char *sys_name); void linux_device_disconnected(uint8_t busnum, uint8_t devaddr); int linux_get_device_address (struct libusb_context *ctx, int detached, uint8_t *busnum, uint8_t *devaddr, const char *dev_node, const char *sys_name); int linux_enumerate_device(struct libusb_context *ctx, uint8_t busnum, uint8_t devaddr, const char *sysfs_dir); #endif release/libusb/libusb/os/threads_windows.h0000664000000000000000000000621614261476162017752 0ustar rootroot/* * libusb synchronization on Microsoft Windows * * Copyright © 2010 Michael Plante * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBUSB_THREADS_WINDOWS_H #define LIBUSB_THREADS_WINDOWS_H #define USBI_MUTEX_INITIALIZER 0L #ifdef _WIN32_WCE typedef LONG usbi_mutex_static_t; #else typedef volatile LONG usbi_mutex_static_t; #endif void usbi_mutex_static_lock(usbi_mutex_static_t *mutex); static inline void usbi_mutex_static_unlock(usbi_mutex_static_t *mutex) { InterlockedExchange(mutex, 0L); } typedef CRITICAL_SECTION usbi_mutex_t; static inline int usbi_mutex_init(usbi_mutex_t *mutex) { InitializeCriticalSection(mutex); return 0; } static inline void usbi_mutex_lock(usbi_mutex_t *mutex) { EnterCriticalSection(mutex); } static inline void usbi_mutex_unlock(usbi_mutex_t *mutex) { LeaveCriticalSection(mutex); } static inline int usbi_mutex_trylock(usbi_mutex_t *mutex) { return !TryEnterCriticalSection(mutex); } static inline void usbi_mutex_destroy(usbi_mutex_t *mutex) { DeleteCriticalSection(mutex); } // We *were* getting timespec from pthread.h: #if (!defined(HAVE_STRUCT_TIMESPEC) && !defined(_TIMESPEC_DEFINED)) #define HAVE_STRUCT_TIMESPEC 1 #define _TIMESPEC_DEFINED 1 struct timespec { long tv_sec; long tv_nsec; }; #endif /* HAVE_STRUCT_TIMESPEC | _TIMESPEC_DEFINED */ // We *were* getting ETIMEDOUT from pthread.h: #ifndef ETIMEDOUT #define ETIMEDOUT 10060 /* This is the value in winsock.h. */ #endif typedef struct usbi_cond { // Every time a thread touches the CV, it winds up in one of these lists. // It stays there until the CV is destroyed, even if the thread terminates. struct list_head waiters; struct list_head not_waiting; } usbi_cond_t; void usbi_cond_init(usbi_cond_t *cond); int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex); int usbi_cond_timedwait(usbi_cond_t *cond, usbi_mutex_t *mutex, const struct timeval *tv); void usbi_cond_broadcast(usbi_cond_t *cond); void usbi_cond_destroy(usbi_cond_t *cond); typedef DWORD usbi_tls_key_t; static inline void usbi_tls_key_create(usbi_tls_key_t *key) { *key = TlsAlloc(); } static inline void *usbi_tls_key_get(usbi_tls_key_t key) { return TlsGetValue(key); } static inline void usbi_tls_key_set(usbi_tls_key_t key, void *ptr) { (void)TlsSetValue(key, ptr); } static inline void usbi_tls_key_delete(usbi_tls_key_t key) { (void)TlsFree(key); } static inline int usbi_get_tid(void) { return (int)GetCurrentThreadId(); } #endif /* LIBUSB_THREADS_WINDOWS_H */ release/libusb/libusb/os/linux_usbfs.c0000664000000000000000000023037014261476161017101 0ustar rootroot/* -*- Mode: C; c-basic-offset:8 ; indent-tabs-mode:t -*- */ /* * Linux usbfs backend for libusb * Copyright © 2007-2009 Daniel Drake * Copyright © 2001 Johannes Erdfelt * Copyright © 2013 Nathan Hjelm * Copyright © 2012-2013 Hans de Goede * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "libusbi.h" #include "linux_usbfs.h" /* sysfs vs usbfs: * opening a usbfs node causes the device to be resumed, so we attempt to * avoid this during enumeration. * * sysfs allows us to read the kernel's in-memory copies of device descriptors * and so forth, avoiding the need to open the device: * - The binary "descriptors" file contains all config descriptors since * 2.6.26, commit 217a9081d8e69026186067711131b77f0ce219ed * - The binary "descriptors" file was added in 2.6.23, commit * 69d42a78f935d19384d1f6e4f94b65bb162b36df, but it only contains the * active config descriptors * - The "busnum" file was added in 2.6.22, commit * 83f7d958eab2fbc6b159ee92bf1493924e1d0f72 * - The "devnum" file has been present since pre-2.6.18 * - the "bConfigurationValue" file has been present since pre-2.6.18 * * If we have bConfigurationValue, busnum, and devnum, then we can determine * the active configuration without having to open the usbfs node in RDWR mode. * The busnum file is important as that is the only way we can relate sysfs * devices to usbfs nodes. * * If we also have all descriptors, we can obtain the device descriptor and * configuration without touching usbfs at all. */ /* endianness for multi-byte fields: * * Descriptors exposed by usbfs have the multi-byte fields in the device * descriptor as host endian. Multi-byte fields in the other descriptors are * bus-endian. The kernel documentation says otherwise, but it is wrong. * * In sysfs all descriptors are bus-endian. */ static const char *usbfs_path = NULL; /* use usbdev*.* device names in /dev instead of the usbfs bus directories */ static int usbdev_names = 0; /* Linux has changed the maximum length of an individual isochronous packet * over time. Initially this limit was 1,023 bytes, but Linux 2.6.18 * (commit 3612242e527eb47ee4756b5350f8bdf791aa5ede) increased this value to * 8,192 bytes to support higher bandwidth devices. Linux 3.10 * (commit e2e2f0ea1c935edcf53feb4c4c8fdb4f86d57dd9) further increased this * value to 49,152 bytes to support super speed devices. */ static unsigned int max_iso_packet_len = 0; /* Linux 2.6.23 adds support for O_CLOEXEC when opening files, which marks the * close-on-exec flag in the underlying file descriptor. */ static int supports_flag_cloexec = -1; /* Linux 2.6.32 adds support for a bulk continuation URB flag. this basically * allows us to mark URBs as being part of a specific logical transfer when * we submit them to the kernel. then, on any error except a cancellation, all * URBs within that transfer will be cancelled and no more URBs will be * accepted for the transfer, meaning that no more data can creep in. * * The BULK_CONTINUATION flag must be set on all URBs within a bulk transfer * (in either direction) except the first. * For IN transfers, we must also set SHORT_NOT_OK on all URBs except the * last; it means that the kernel should treat a short reply as an error. * For OUT transfers, SHORT_NOT_OK must not be set. it isn't needed (OUT * transfers can't be short unless there's already some sort of error), and * setting this flag is disallowed (a kernel with USB debugging enabled will * reject such URBs). */ static int supports_flag_bulk_continuation = -1; /* Linux 2.6.31 fixes support for the zero length packet URB flag. This * allows us to mark URBs that should be followed by a zero length data * packet, which can be required by device- or class-specific protocols. */ static int supports_flag_zero_packet = -1; /* clock ID for monotonic clock, as not all clock sources are available on all * systems. appropriate choice made at initialization time. */ static clockid_t monotonic_clkid = -1; /* Linux 2.6.22 (commit 83f7d958eab2fbc6b159ee92bf1493924e1d0f72) adds a busnum * to sysfs, so we can relate devices. This also implies that we can read * the active configuration through bConfigurationValue */ static int sysfs_can_relate_devices = -1; /* Linux 2.6.26 (commit 217a9081d8e69026186067711131b77f0ce219ed) adds all * config descriptors (rather then just the active config) to the sysfs * descriptors file, so from then on we can use them. */ static int sysfs_has_descriptors = -1; /* how many times have we initted (and not exited) ? */ static int init_count = 0; /* Serialize hotplug start/stop */ static usbi_mutex_static_t linux_hotplug_startstop_lock = USBI_MUTEX_INITIALIZER; /* Serialize scan-devices, event-thread, and poll */ usbi_mutex_static_t linux_hotplug_lock = USBI_MUTEX_INITIALIZER; static int linux_start_event_monitor(void); static int linux_stop_event_monitor(void); static int linux_scan_devices(struct libusb_context *ctx); static int sysfs_scan_device(struct libusb_context *ctx, const char *devname); static int detach_kernel_driver_and_claim(struct libusb_device_handle *, int); #if !defined(USE_UDEV) static int linux_default_scan_devices (struct libusb_context *ctx); #endif struct kernel_version { int major; int minor; int sublevel; }; struct linux_device_priv { char *sysfs_dir; unsigned char *descriptors; int descriptors_len; int active_config; /* cache val for !sysfs_can_relate_devices */ }; struct linux_device_handle_priv { int fd; int fd_removed; uint32_t caps; }; enum reap_action { NORMAL = 0, /* submission failed after the first URB, so await cancellation/completion * of all the others */ SUBMIT_FAILED, /* cancelled by user or timeout */ CANCELLED, /* completed multi-URB transfer in non-final URB */ COMPLETED_EARLY, /* one or more urbs encountered a low-level error */ ERROR, }; struct linux_transfer_priv { union { struct usbfs_urb *urbs; struct usbfs_urb **iso_urbs; }; enum reap_action reap_action; int num_urbs; int num_retired; enum libusb_transfer_status reap_status; /* next iso packet in user-supplied transfer to be populated */ int iso_packet_offset; }; static int _open(const char *path, int flags) { #if defined(O_CLOEXEC) if (supports_flag_cloexec) return open(path, flags | O_CLOEXEC); else #endif return open(path, flags); } static int _get_usbfs_fd(struct libusb_device *dev, mode_t mode, int silent) { struct libusb_context *ctx = DEVICE_CTX(dev); char path[PATH_MAX]; int fd; int delay = 10000; if (usbdev_names) snprintf(path, PATH_MAX, "%s/usbdev%d.%d", usbfs_path, dev->bus_number, dev->device_address); else snprintf(path, PATH_MAX, "%s/%03d/%03d", usbfs_path, dev->bus_number, dev->device_address); fd = _open(path, mode); if (fd != -1) return fd; /* Success */ if (errno == ENOENT) { if (!silent) usbi_err(ctx, "File doesn't exist, wait %d ms and try again", delay/1000); /* Wait 10ms for USB device path creation.*/ nanosleep(&(struct timespec){delay / 1000000, (delay * 1000) % 1000000000UL}, NULL); fd = _open(path, mode); if (fd != -1) return fd; /* Success */ } if (!silent) { usbi_err(ctx, "libusb couldn't open USB device %s: %s", path, strerror(errno)); if (errno == EACCES && mode == O_RDWR) usbi_err(ctx, "libusb requires write access to USB " "device nodes."); } if (errno == EACCES) return LIBUSB_ERROR_ACCESS; if (errno == ENOENT) return LIBUSB_ERROR_NO_DEVICE; return LIBUSB_ERROR_IO; } static struct linux_device_priv *_device_priv(struct libusb_device *dev) { return (struct linux_device_priv *) dev->os_priv; } static struct linux_device_handle_priv *_device_handle_priv( struct libusb_device_handle *handle) { return (struct linux_device_handle_priv *) handle->os_priv; } /* check dirent for a /dev/usbdev%d.%d name * optionally return bus/device on success */ static int _is_usbdev_entry(struct dirent *entry, int *bus_p, int *dev_p) { int busnum, devnum; if (sscanf(entry->d_name, "usbdev%d.%d", &busnum, &devnum) != 2) return 0; usbi_dbg("found: %s", entry->d_name); if (bus_p != NULL) *bus_p = busnum; if (dev_p != NULL) *dev_p = devnum; return 1; } static int check_usb_vfs(const char *dirname) { DIR *dir; struct dirent *entry; int found = 0; dir = opendir(dirname); if (!dir) return 0; while ((entry = readdir(dir)) != NULL) { if (entry->d_name[0] == '.') continue; /* We assume if we find any files that it must be the right place */ found = 1; break; } closedir(dir); return found; } static const char *find_usbfs_path(void) { const char *path = "/dev/bus/usb"; const char *ret = NULL; if (check_usb_vfs(path)) { ret = path; } else { path = "/proc/bus/usb"; if (check_usb_vfs(path)) ret = path; } /* look for /dev/usbdev*.* if the normal places fail */ if (ret == NULL) { struct dirent *entry; DIR *dir; path = "/dev"; dir = opendir(path); if (dir != NULL) { while ((entry = readdir(dir)) != NULL) { if (_is_usbdev_entry(entry, NULL, NULL)) { /* found one; that's enough */ ret = path; usbdev_names = 1; break; } } closedir(dir); } } /* On udev based systems without any usb-devices /dev/bus/usb will not * exist. So if we've not found anything and we're using udev for hotplug * simply assume /dev/bus/usb rather then making libusb_init fail. */ #if defined(USE_UDEV) if (ret == NULL) ret = "/dev/bus/usb"; #endif if (ret != NULL) usbi_dbg("found usbfs at %s", ret); return ret; } /* the monotonic clock is not usable on all systems (e.g. embedded ones often * seem to lack it). fall back to REALTIME if we have to. */ static clockid_t find_monotonic_clock(void) { #ifdef CLOCK_MONOTONIC struct timespec ts; int r; /* Linux 2.6.28 adds CLOCK_MONOTONIC_RAW but we don't use it * because it's not available through timerfd */ r = clock_gettime(CLOCK_MONOTONIC, &ts); if (r == 0) return CLOCK_MONOTONIC; usbi_dbg("monotonic clock doesn't work, errno %d", errno); #endif return CLOCK_REALTIME; } static int get_kernel_version(struct libusb_context *ctx, struct kernel_version *ver) { struct utsname uts; int atoms; if (uname(&uts) < 0) { usbi_err(ctx, "uname failed, errno %d", errno); return -1; } atoms = sscanf(uts.release, "%d.%d.%d", &ver->major, &ver->minor, &ver->sublevel); if (atoms < 1) { usbi_err(ctx, "failed to parse uname release '%s'", uts.release); return -1; } if (atoms < 2) ver->minor = -1; if (atoms < 3) ver->sublevel = -1; usbi_dbg("reported kernel version is %s", uts.release); return 0; } static int kernel_version_ge(const struct kernel_version *ver, int major, int minor, int sublevel) { if (ver->major > major) return 1; else if (ver->major < major) return 0; /* kmajor == major */ if (ver->minor == -1 && ver->sublevel == -1) return 0 == minor && 0 == sublevel; else if (ver->minor > minor) return 1; else if (ver->minor < minor) return 0; /* kminor == minor */ if (ver->sublevel == -1) return 0 == sublevel; return ver->sublevel >= sublevel; } static int op_init(struct libusb_context *ctx) { struct kernel_version kversion; struct stat statbuf; int r; usbfs_path = find_usbfs_path(); if (!usbfs_path) { usbi_err(ctx, "could not find usbfs"); return LIBUSB_ERROR_OTHER; } if (monotonic_clkid == -1) monotonic_clkid = find_monotonic_clock(); if (get_kernel_version(ctx, &kversion) < 0) return LIBUSB_ERROR_OTHER; if (supports_flag_cloexec == -1) { /* O_CLOEXEC flag available from Linux 2.6.23 */ supports_flag_cloexec = kernel_version_ge(&kversion,2,6,23); } if (supports_flag_bulk_continuation == -1) { /* bulk continuation URB flag available from Linux 2.6.32 */ supports_flag_bulk_continuation = kernel_version_ge(&kversion,2,6,32); } if (supports_flag_bulk_continuation) usbi_dbg("bulk continuation flag supported"); if (-1 == supports_flag_zero_packet) { /* zero length packet URB flag fixed since Linux 2.6.31 */ supports_flag_zero_packet = kernel_version_ge(&kversion,2,6,31); } if (supports_flag_zero_packet) usbi_dbg("zero length packet flag supported"); if (!max_iso_packet_len) { if (kernel_version_ge(&kversion,3,10,0)) max_iso_packet_len = 49152; else if (kernel_version_ge(&kversion,2,6,18)) max_iso_packet_len = 8192; else max_iso_packet_len = 1023; } usbi_dbg("max iso packet length is (likely) %u bytes", max_iso_packet_len); if (-1 == sysfs_has_descriptors) { /* sysfs descriptors has all descriptors since Linux 2.6.26 */ sysfs_has_descriptors = kernel_version_ge(&kversion,2,6,26); } if (-1 == sysfs_can_relate_devices) { /* sysfs has busnum since Linux 2.6.22 */ sysfs_can_relate_devices = kernel_version_ge(&kversion,2,6,22); } if (sysfs_can_relate_devices || sysfs_has_descriptors) { r = stat(SYSFS_DEVICE_PATH, &statbuf); if (r != 0 || !S_ISDIR(statbuf.st_mode)) { usbi_warn(ctx, "sysfs not mounted"); sysfs_can_relate_devices = 0; sysfs_has_descriptors = 0; } } if (sysfs_can_relate_devices) usbi_dbg("sysfs can relate devices"); if (sysfs_has_descriptors) usbi_dbg("sysfs has complete descriptors"); usbi_mutex_static_lock(&linux_hotplug_startstop_lock); r = LIBUSB_SUCCESS; if (init_count == 0) { /* start up hotplug event handler */ r = linux_start_event_monitor(); } if (r == LIBUSB_SUCCESS) { r = linux_scan_devices(ctx); if (r == LIBUSB_SUCCESS) init_count++; else if (init_count == 0) linux_stop_event_monitor(); } else usbi_err(ctx, "error starting hotplug event monitor"); usbi_mutex_static_unlock(&linux_hotplug_startstop_lock); return r; } static void op_exit(struct libusb_context *ctx) { UNUSED(ctx); usbi_mutex_static_lock(&linux_hotplug_startstop_lock); assert(init_count != 0); if (!--init_count) { /* tear down event handler */ (void)linux_stop_event_monitor(); } usbi_mutex_static_unlock(&linux_hotplug_startstop_lock); } static int linux_start_event_monitor(void) { #if defined(USE_UDEV) return linux_udev_start_event_monitor(); #else return linux_netlink_start_event_monitor(); #endif } static int linux_stop_event_monitor(void) { #if defined(USE_UDEV) return linux_udev_stop_event_monitor(); #else return linux_netlink_stop_event_monitor(); #endif } static int linux_scan_devices(struct libusb_context *ctx) { int ret; usbi_mutex_static_lock(&linux_hotplug_lock); #if defined(USE_UDEV) ret = linux_udev_scan_devices(ctx); #else ret = linux_default_scan_devices(ctx); #endif usbi_mutex_static_unlock(&linux_hotplug_lock); return ret; } static void op_hotplug_poll(void) { #if defined(USE_UDEV) linux_udev_hotplug_poll(); #else linux_netlink_hotplug_poll(); #endif } static int _open_sysfs_attr(struct libusb_device *dev, const char *attr) { struct linux_device_priv *priv = _device_priv(dev); char filename[PATH_MAX]; int fd; snprintf(filename, PATH_MAX, "%s/%s/%s", SYSFS_DEVICE_PATH, priv->sysfs_dir, attr); fd = _open(filename, O_RDONLY); if (fd < 0) { usbi_err(DEVICE_CTX(dev), "open %s failed ret=%d errno=%d", filename, fd, errno); return LIBUSB_ERROR_IO; } return fd; } /* Note only suitable for attributes which always read >= 0, < 0 is error */ static int __read_sysfs_attr(struct libusb_context *ctx, const char *devname, const char *attr) { char filename[PATH_MAX]; FILE *f; int fd, r, value; snprintf(filename, PATH_MAX, "%s/%s/%s", SYSFS_DEVICE_PATH, devname, attr); fd = _open(filename, O_RDONLY); if (fd == -1) { if (errno == ENOENT) { /* File doesn't exist. Assume the device has been disconnected (see trac ticket #70). */ return LIBUSB_ERROR_NO_DEVICE; } usbi_err(ctx, "open %s failed errno=%d", filename, errno); return LIBUSB_ERROR_IO; } f = fdopen(fd, "r"); if (f == NULL) { usbi_err(ctx, "fdopen %s failed errno=%d", filename, errno); close(fd); return LIBUSB_ERROR_OTHER; } r = fscanf(f, "%d", &value); fclose(f); if (r != 1) { usbi_err(ctx, "fscanf %s returned %d, errno=%d", attr, r, errno); return LIBUSB_ERROR_NO_DEVICE; /* For unplug race (trac #70) */ } if (value < 0) { usbi_err(ctx, "%s contains a negative value", filename); return LIBUSB_ERROR_IO; } return value; } static int op_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) { struct linux_device_priv *priv = _device_priv(dev); *host_endian = sysfs_has_descriptors ? 0 : 1; memcpy(buffer, priv->descriptors, DEVICE_DESC_LENGTH); return 0; } /* read the bConfigurationValue for a device */ static int sysfs_get_active_config(struct libusb_device *dev, int *config) { char *endptr; char tmp[5] = {0, 0, 0, 0, 0}; long num; int fd; ssize_t r; fd = _open_sysfs_attr(dev, "bConfigurationValue"); if (fd < 0) return fd; r = read(fd, tmp, sizeof(tmp)); close(fd); if (r < 0) { usbi_err(DEVICE_CTX(dev), "read bConfigurationValue failed ret=%d errno=%d", r, errno); return LIBUSB_ERROR_IO; } else if (r == 0) { usbi_dbg("device unconfigured"); *config = -1; return 0; } if (tmp[sizeof(tmp) - 1] != 0) { usbi_err(DEVICE_CTX(dev), "not null-terminated?"); return LIBUSB_ERROR_IO; } else if (tmp[0] == 0) { usbi_err(DEVICE_CTX(dev), "no configuration value?"); return LIBUSB_ERROR_IO; } num = strtol(tmp, &endptr, 10); if (endptr == tmp) { usbi_err(DEVICE_CTX(dev), "error converting '%s' to integer", tmp); return LIBUSB_ERROR_IO; } *config = (int) num; return 0; } int linux_get_device_address (struct libusb_context *ctx, int detached, uint8_t *busnum, uint8_t *devaddr,const char *dev_node, const char *sys_name) { int sysfs_attr; usbi_dbg("getting address for device: %s detached: %d", sys_name, detached); /* can't use sysfs to read the bus and device number if the * device has been detached */ if (!sysfs_can_relate_devices || detached || NULL == sys_name) { if (NULL == dev_node) { return LIBUSB_ERROR_OTHER; } /* will this work with all supported kernel versions? */ if (!strncmp(dev_node, "/dev/bus/usb", 12)) { sscanf (dev_node, "/dev/bus/usb/%hhu/%hhu", busnum, devaddr); } else if (!strncmp(dev_node, "/proc/bus/usb", 13)) { sscanf (dev_node, "/proc/bus/usb/%hhu/%hhu", busnum, devaddr); } return LIBUSB_SUCCESS; } usbi_dbg("scan %s", sys_name); sysfs_attr = __read_sysfs_attr(ctx, sys_name, "busnum"); if (0 > sysfs_attr) return sysfs_attr; if (sysfs_attr > 255) return LIBUSB_ERROR_INVALID_PARAM; *busnum = (uint8_t) sysfs_attr; sysfs_attr = __read_sysfs_attr(ctx, sys_name, "devnum"); if (0 > sysfs_attr) return sysfs_attr; if (sysfs_attr > 255) return LIBUSB_ERROR_INVALID_PARAM; *devaddr = (uint8_t) sysfs_attr; usbi_dbg("bus=%d dev=%d", *busnum, *devaddr); return LIBUSB_SUCCESS; } /* Return offset of the next descriptor with the given type */ static int seek_to_next_descriptor(struct libusb_context *ctx, uint8_t descriptor_type, unsigned char *buffer, int size) { struct usb_descriptor_header header; int i; for (i = 0; size >= 0; i += header.bLength, size -= header.bLength) { if (size == 0) return LIBUSB_ERROR_NOT_FOUND; if (size < 2) { usbi_err(ctx, "short descriptor read %d/2", size); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(buffer + i, "bb", &header, 0); if (i && header.bDescriptorType == descriptor_type) return i; } usbi_err(ctx, "bLength overflow by %d bytes", -size); return LIBUSB_ERROR_IO; } /* Return offset to next config */ static int seek_to_next_config(struct libusb_context *ctx, unsigned char *buffer, int size) { struct libusb_config_descriptor config; if (size == 0) return LIBUSB_ERROR_NOT_FOUND; if (size < LIBUSB_DT_CONFIG_SIZE) { usbi_err(ctx, "short descriptor read %d/%d", size, LIBUSB_DT_CONFIG_SIZE); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(buffer, "bbwbbbbb", &config, 0); if (config.bDescriptorType != LIBUSB_DT_CONFIG) { usbi_err(ctx, "descriptor is not a config desc (type 0x%02x)", config.bDescriptorType); return LIBUSB_ERROR_IO; } /* * In usbfs the config descriptors are config.wTotalLength bytes apart, * with any short reads from the device appearing as holes in the file. * * In sysfs wTotalLength is ignored, instead the kernel returns a * config descriptor with verified bLength fields, with descriptors * with an invalid bLength removed. */ if (sysfs_has_descriptors) { int next = seek_to_next_descriptor(ctx, LIBUSB_DT_CONFIG, buffer, size); if (next == LIBUSB_ERROR_NOT_FOUND) next = size; if (next < 0) return next; if (next != config.wTotalLength) usbi_warn(ctx, "config length mismatch wTotalLength " "%d real %d", config.wTotalLength, next); return next; } else { if (config.wTotalLength < LIBUSB_DT_CONFIG_SIZE) { usbi_err(ctx, "invalid wTotalLength %d", config.wTotalLength); return LIBUSB_ERROR_IO; } else if (config.wTotalLength > size) { usbi_warn(ctx, "short descriptor read %d/%d", size, config.wTotalLength); return size; } else return config.wTotalLength; } } static int op_get_config_descriptor_by_value(struct libusb_device *dev, uint8_t value, unsigned char **buffer, int *host_endian) { struct libusb_context *ctx = DEVICE_CTX(dev); struct linux_device_priv *priv = _device_priv(dev); unsigned char *descriptors = priv->descriptors; int size = priv->descriptors_len; struct libusb_config_descriptor *config; *buffer = NULL; /* Unlike the device desc. config descs. are always in raw format */ *host_endian = 0; /* Skip device header */ descriptors += DEVICE_DESC_LENGTH; size -= DEVICE_DESC_LENGTH; /* Seek till the config is found, or till "EOF" */ while (1) { int next = seek_to_next_config(ctx, descriptors, size); if (next < 0) return next; config = (struct libusb_config_descriptor *)descriptors; if (config->bConfigurationValue == value) { *buffer = descriptors; return next; } size -= next; descriptors += next; } } static int op_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) { int r, config; unsigned char *config_desc; if (sysfs_can_relate_devices) { r = sysfs_get_active_config(dev, &config); if (r < 0) return r; } else { /* Use cached bConfigurationValue */ struct linux_device_priv *priv = _device_priv(dev); config = priv->active_config; } if (config == -1) return LIBUSB_ERROR_NOT_FOUND; r = op_get_config_descriptor_by_value(dev, config, &config_desc, host_endian); if (r < 0) return r; len = MIN(len, (size_t)r); memcpy(buffer, config_desc, len); return len; } static int op_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) { struct linux_device_priv *priv = _device_priv(dev); unsigned char *descriptors = priv->descriptors; int i, r, size = priv->descriptors_len; /* Unlike the device desc. config descs. are always in raw format */ *host_endian = 0; /* Skip device header */ descriptors += DEVICE_DESC_LENGTH; size -= DEVICE_DESC_LENGTH; /* Seek till the config is found, or till "EOF" */ for (i = 0; ; i++) { r = seek_to_next_config(DEVICE_CTX(dev), descriptors, size); if (r < 0) return r; if (i == config_index) break; size -= r; descriptors += r; } len = MIN(len, (size_t)r); memcpy(buffer, descriptors, len); return len; } /* send a control message to retrieve active configuration */ static int usbfs_get_active_config(struct libusb_device *dev, int fd) { struct linux_device_priv *priv = _device_priv(dev); unsigned char active_config = 0; int r; struct usbfs_ctrltransfer ctrl = { .bmRequestType = LIBUSB_ENDPOINT_IN, .bRequest = LIBUSB_REQUEST_GET_CONFIGURATION, .wValue = 0, .wIndex = 0, .wLength = 1, .timeout = 1000, .data = &active_config }; r = ioctl(fd, IOCTL_USBFS_CONTROL, &ctrl); if (r < 0) { if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; /* we hit this error path frequently with buggy devices :( */ usbi_warn(DEVICE_CTX(dev), "get_configuration failed ret=%d errno=%d", r, errno); priv->active_config = -1; } else { if (active_config > 0) { priv->active_config = active_config; } else { /* some buggy devices have a configuration 0, but we're * reaching into the corner of a corner case here, so let's * not support buggy devices in these circumstances. * stick to the specs: a configuration value of 0 means * unconfigured. */ usbi_warn(DEVICE_CTX(dev), "active cfg 0? assuming unconfigured device"); priv->active_config = -1; } } return LIBUSB_SUCCESS; } static int initialize_device(struct libusb_device *dev, uint8_t busnum, uint8_t devaddr, const char *sysfs_dir) { struct linux_device_priv *priv = _device_priv(dev); struct libusb_context *ctx = DEVICE_CTX(dev); int descriptors_size = 512; /* Begin with a 1024 byte alloc */ int fd, speed; ssize_t r; dev->bus_number = busnum; dev->device_address = devaddr; if (sysfs_dir) { priv->sysfs_dir = strdup(sysfs_dir); if (!priv->sysfs_dir) return LIBUSB_ERROR_NO_MEM; /* Note speed can contain 1.5, in this case __read_sysfs_attr will stop parsing at the '.' and return 1 */ speed = __read_sysfs_attr(DEVICE_CTX(dev), sysfs_dir, "speed"); if (speed >= 0) { switch (speed) { case 1: dev->speed = LIBUSB_SPEED_LOW; break; case 12: dev->speed = LIBUSB_SPEED_FULL; break; case 480: dev->speed = LIBUSB_SPEED_HIGH; break; case 5000: dev->speed = LIBUSB_SPEED_SUPER; break; case 10000: dev->speed = LIBUSB_SPEED_SUPER_PLUS; break; default: usbi_warn(DEVICE_CTX(dev), "Unknown device speed: %d Mbps", speed); } } } /* cache descriptors in memory */ if (sysfs_has_descriptors) fd = _open_sysfs_attr(dev, "descriptors"); else fd = _get_usbfs_fd(dev, O_RDONLY, 0); if (fd < 0) return fd; do { descriptors_size *= 2; priv->descriptors = usbi_reallocf(priv->descriptors, descriptors_size); if (!priv->descriptors) { close(fd); return LIBUSB_ERROR_NO_MEM; } /* usbfs has holes in the file */ if (!sysfs_has_descriptors) { memset(priv->descriptors + priv->descriptors_len, 0, descriptors_size - priv->descriptors_len); } r = read(fd, priv->descriptors + priv->descriptors_len, descriptors_size - priv->descriptors_len); if (r < 0) { usbi_err(ctx, "read descriptor failed ret=%d errno=%d", fd, errno); close(fd); return LIBUSB_ERROR_IO; } priv->descriptors_len += r; } while (priv->descriptors_len == descriptors_size); close(fd); if (priv->descriptors_len < DEVICE_DESC_LENGTH) { usbi_err(ctx, "short descriptor read (%d)", priv->descriptors_len); return LIBUSB_ERROR_IO; } if (sysfs_can_relate_devices) return LIBUSB_SUCCESS; /* cache active config */ fd = _get_usbfs_fd(dev, O_RDWR, 1); if (fd < 0) { /* cannot send a control message to determine the active * config. just assume the first one is active. */ usbi_warn(ctx, "Missing rw usbfs access; cannot determine " "active configuration descriptor"); if (priv->descriptors_len >= (DEVICE_DESC_LENGTH + LIBUSB_DT_CONFIG_SIZE)) { struct libusb_config_descriptor config; usbi_parse_descriptor( priv->descriptors + DEVICE_DESC_LENGTH, "bbwbbbbb", &config, 0); priv->active_config = config.bConfigurationValue; } else priv->active_config = -1; /* No config dt */ return LIBUSB_SUCCESS; } r = usbfs_get_active_config(dev, fd); close(fd); return r; } static int linux_get_parent_info(struct libusb_device *dev, const char *sysfs_dir) { struct libusb_context *ctx = DEVICE_CTX(dev); struct libusb_device *it; char *parent_sysfs_dir, *tmp; int ret, add_parent = 1; /* XXX -- can we figure out the topology when using usbfs? */ if (NULL == sysfs_dir || 0 == strncmp(sysfs_dir, "usb", 3)) { /* either using usbfs or finding the parent of a root hub */ return LIBUSB_SUCCESS; } parent_sysfs_dir = strdup(sysfs_dir); if (NULL == parent_sysfs_dir) { return LIBUSB_ERROR_NO_MEM; } if (NULL != (tmp = strrchr(parent_sysfs_dir, '.')) || NULL != (tmp = strrchr(parent_sysfs_dir, '-'))) { dev->port_number = atoi(tmp + 1); *tmp = '\0'; } else { usbi_warn(ctx, "Can not parse sysfs_dir: %s, no parent info", parent_sysfs_dir); free (parent_sysfs_dir); return LIBUSB_SUCCESS; } /* is the parent a root hub? */ if (NULL == strchr(parent_sysfs_dir, '-')) { tmp = parent_sysfs_dir; ret = asprintf (&parent_sysfs_dir, "usb%s", tmp); free (tmp); if (0 > ret) { return LIBUSB_ERROR_NO_MEM; } } retry: /* find the parent in the context */ usbi_mutex_lock(&ctx->usb_devs_lock); list_for_each_entry(it, &ctx->usb_devs, list, struct libusb_device) { struct linux_device_priv *priv = _device_priv(it); if (priv->sysfs_dir) { if (0 == strcmp (priv->sysfs_dir, parent_sysfs_dir)) { dev->parent_dev = libusb_ref_device(it); break; } } } usbi_mutex_unlock(&ctx->usb_devs_lock); if (!dev->parent_dev && add_parent) { usbi_dbg("parent_dev %s not enumerated yet, enumerating now", parent_sysfs_dir); sysfs_scan_device(ctx, parent_sysfs_dir); add_parent = 0; goto retry; } usbi_dbg("Dev %p (%s) has parent %p (%s) port %d", dev, sysfs_dir, dev->parent_dev, parent_sysfs_dir, dev->port_number); free (parent_sysfs_dir); return LIBUSB_SUCCESS; } int linux_enumerate_device(struct libusb_context *ctx, uint8_t busnum, uint8_t devaddr, const char *sysfs_dir) { unsigned long session_id; struct libusb_device *dev; int r = 0; /* FIXME: session ID is not guaranteed unique as addresses can wrap and * will be reused. instead we should add a simple sysfs attribute with * a session ID. */ session_id = busnum << 8 | devaddr; usbi_dbg("busnum %d devaddr %d session_id %ld", busnum, devaddr, session_id); dev = usbi_get_device_by_session_id(ctx, session_id); if (dev) { /* device already exists in the context */ usbi_dbg("session_id %ld already exists", session_id); libusb_unref_device(dev); return LIBUSB_SUCCESS; } usbi_dbg("allocating new device for %d/%d (session %ld)", busnum, devaddr, session_id); dev = usbi_alloc_device(ctx, session_id); if (!dev) return LIBUSB_ERROR_NO_MEM; r = initialize_device(dev, busnum, devaddr, sysfs_dir); if (r < 0) goto out; r = usbi_sanitize_device(dev); if (r < 0) goto out; r = linux_get_parent_info(dev, sysfs_dir); if (r < 0) goto out; out: if (r < 0) libusb_unref_device(dev); else usbi_connect_device(dev); return r; } void linux_hotplug_enumerate(uint8_t busnum, uint8_t devaddr, const char *sys_name) { struct libusb_context *ctx; usbi_mutex_static_lock(&active_contexts_lock); list_for_each_entry(ctx, &active_contexts_list, list, struct libusb_context) { linux_enumerate_device(ctx, busnum, devaddr, sys_name); } usbi_mutex_static_unlock(&active_contexts_lock); } void linux_device_disconnected(uint8_t busnum, uint8_t devaddr) { struct libusb_context *ctx; struct libusb_device *dev; unsigned long session_id = busnum << 8 | devaddr; usbi_mutex_static_lock(&active_contexts_lock); list_for_each_entry(ctx, &active_contexts_list, list, struct libusb_context) { dev = usbi_get_device_by_session_id (ctx, session_id); if (NULL != dev) { usbi_disconnect_device (dev); libusb_unref_device(dev); } else { usbi_dbg("device not found for session %x", session_id); } } usbi_mutex_static_unlock(&active_contexts_lock); } #if !defined(USE_UDEV) /* open a bus directory and adds all discovered devices to the context */ static int usbfs_scan_busdir(struct libusb_context *ctx, uint8_t busnum) { DIR *dir; char dirpath[PATH_MAX]; struct dirent *entry; int r = LIBUSB_ERROR_IO; snprintf(dirpath, PATH_MAX, "%s/%03d", usbfs_path, busnum); usbi_dbg("%s", dirpath); dir = opendir(dirpath); if (!dir) { usbi_err(ctx, "opendir '%s' failed, errno=%d", dirpath, errno); /* FIXME: should handle valid race conditions like hub unplugged * during directory iteration - this is not an error */ return r; } while ((entry = readdir(dir))) { int devaddr; if (entry->d_name[0] == '.') continue; devaddr = atoi(entry->d_name); if (devaddr == 0) { usbi_dbg("unknown dir entry %s", entry->d_name); continue; } if (linux_enumerate_device(ctx, busnum, (uint8_t) devaddr, NULL)) { usbi_dbg("failed to enumerate dir entry %s", entry->d_name); continue; } r = 0; } closedir(dir); return r; } static int usbfs_get_device_list(struct libusb_context *ctx) { struct dirent *entry; DIR *buses = opendir(usbfs_path); int r = 0; if (!buses) { usbi_err(ctx, "opendir buses failed errno=%d", errno); return LIBUSB_ERROR_IO; } while ((entry = readdir(buses))) { int busnum; if (entry->d_name[0] == '.') continue; if (usbdev_names) { int devaddr; if (!_is_usbdev_entry(entry, &busnum, &devaddr)) continue; r = linux_enumerate_device(ctx, busnum, (uint8_t) devaddr, NULL); if (r < 0) { usbi_dbg("failed to enumerate dir entry %s", entry->d_name); continue; } } else { busnum = atoi(entry->d_name); if (busnum == 0) { usbi_dbg("unknown dir entry %s", entry->d_name); continue; } r = usbfs_scan_busdir(ctx, busnum); if (r < 0) break; } } closedir(buses); return r; } #endif static int sysfs_scan_device(struct libusb_context *ctx, const char *devname) { uint8_t busnum, devaddr; int ret; ret = linux_get_device_address (ctx, 0, &busnum, &devaddr, NULL, devname); if (LIBUSB_SUCCESS != ret) { return ret; } return linux_enumerate_device(ctx, busnum & 0xff, devaddr & 0xff, devname); } #if !defined(USE_UDEV) static int sysfs_get_device_list(struct libusb_context *ctx) { DIR *devices = opendir(SYSFS_DEVICE_PATH); struct dirent *entry; int num_devices = 0; int num_enumerated = 0; if (!devices) { usbi_err(ctx, "opendir devices failed errno=%d", errno); return LIBUSB_ERROR_IO; } while ((entry = readdir(devices))) { if ((!isdigit(entry->d_name[0]) && strncmp(entry->d_name, "usb", 3)) || strchr(entry->d_name, ':')) continue; num_devices++; if (sysfs_scan_device(ctx, entry->d_name)) { usbi_dbg("failed to enumerate dir entry %s", entry->d_name); continue; } num_enumerated++; } closedir(devices); /* successful if at least one device was enumerated or no devices were found */ if (num_enumerated || !num_devices) return LIBUSB_SUCCESS; else return LIBUSB_ERROR_IO; } static int linux_default_scan_devices (struct libusb_context *ctx) { /* we can retrieve device list and descriptors from sysfs or usbfs. * sysfs is preferable, because if we use usbfs we end up resuming * any autosuspended USB devices. however, sysfs is not available * everywhere, so we need a usbfs fallback too. * * as described in the "sysfs vs usbfs" comment at the top of this * file, sometimes we have sysfs but not enough information to * relate sysfs devices to usbfs nodes. op_init() determines the * adequacy of sysfs and sets sysfs_can_relate_devices. */ if (sysfs_can_relate_devices != 0) return sysfs_get_device_list(ctx); else return usbfs_get_device_list(ctx); } #endif static int op_open(struct libusb_device_handle *handle) { struct linux_device_handle_priv *hpriv = _device_handle_priv(handle); int r; hpriv->fd = _get_usbfs_fd(handle->dev, O_RDWR, 0); if (hpriv->fd < 0) { if (hpriv->fd == LIBUSB_ERROR_NO_DEVICE) { /* device will still be marked as attached if hotplug monitor thread * hasn't processed remove event yet */ usbi_mutex_static_lock(&linux_hotplug_lock); if (handle->dev->attached) { usbi_dbg("open failed with no device, but device still attached"); linux_device_disconnected(handle->dev->bus_number, handle->dev->device_address); } usbi_mutex_static_unlock(&linux_hotplug_lock); } return hpriv->fd; } r = ioctl(hpriv->fd, IOCTL_USBFS_GET_CAPABILITIES, &hpriv->caps); if (r < 0) { if (errno == ENOTTY) usbi_dbg("getcap not available"); else usbi_err(HANDLE_CTX(handle), "getcap failed (%d)", errno); hpriv->caps = 0; if (supports_flag_zero_packet) hpriv->caps |= USBFS_CAP_ZERO_PACKET; if (supports_flag_bulk_continuation) hpriv->caps |= USBFS_CAP_BULK_CONTINUATION; } r = usbi_add_pollfd(HANDLE_CTX(handle), hpriv->fd, POLLOUT); if (r < 0) close(hpriv->fd); return r; } static void op_close(struct libusb_device_handle *dev_handle) { struct linux_device_handle_priv *hpriv = _device_handle_priv(dev_handle); /* fd may have already been removed by POLLERR condition in op_handle_events() */ if (!hpriv->fd_removed) usbi_remove_pollfd(HANDLE_CTX(dev_handle), hpriv->fd); close(hpriv->fd); } static int op_get_configuration(struct libusb_device_handle *handle, int *config) { int r; if (sysfs_can_relate_devices) { r = sysfs_get_active_config(handle->dev, config); } else { r = usbfs_get_active_config(handle->dev, _device_handle_priv(handle)->fd); if (r == LIBUSB_SUCCESS) *config = _device_priv(handle->dev)->active_config; } if (r < 0) return r; if (*config == -1) { usbi_err(HANDLE_CTX(handle), "device unconfigured"); *config = 0; } return 0; } static int op_set_configuration(struct libusb_device_handle *handle, int config) { struct linux_device_priv *priv = _device_priv(handle->dev); int fd = _device_handle_priv(handle)->fd; int r = ioctl(fd, IOCTL_USBFS_SETCONFIG, &config); if (r) { if (errno == EINVAL) return LIBUSB_ERROR_NOT_FOUND; else if (errno == EBUSY) return LIBUSB_ERROR_BUSY; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "failed, error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } /* update our cached active config descriptor */ priv->active_config = config; return LIBUSB_SUCCESS; } static int claim_interface(struct libusb_device_handle *handle, int iface) { int fd = _device_handle_priv(handle)->fd; int r = ioctl(fd, IOCTL_USBFS_CLAIMINTF, &iface); if (r) { if (errno == ENOENT) return LIBUSB_ERROR_NOT_FOUND; else if (errno == EBUSY) return LIBUSB_ERROR_BUSY; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "claim interface failed, error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } return 0; } static int release_interface(struct libusb_device_handle *handle, int iface) { int fd = _device_handle_priv(handle)->fd; int r = ioctl(fd, IOCTL_USBFS_RELEASEINTF, &iface); if (r) { if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "release interface failed, error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } return 0; } static int op_set_interface(struct libusb_device_handle *handle, int iface, int altsetting) { int fd = _device_handle_priv(handle)->fd; struct usbfs_setinterface setintf; int r; setintf.interface = iface; setintf.altsetting = altsetting; r = ioctl(fd, IOCTL_USBFS_SETINTF, &setintf); if (r) { if (errno == EINVAL) return LIBUSB_ERROR_NOT_FOUND; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "setintf failed error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } return 0; } static int op_clear_halt(struct libusb_device_handle *handle, unsigned char endpoint) { int fd = _device_handle_priv(handle)->fd; unsigned int _endpoint = endpoint; int r = ioctl(fd, IOCTL_USBFS_CLEAR_HALT, &_endpoint); if (r) { if (errno == ENOENT) return LIBUSB_ERROR_NOT_FOUND; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "clear_halt failed error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } return 0; } static int op_reset_device(struct libusb_device_handle *handle) { int fd = _device_handle_priv(handle)->fd; int i, r, ret = 0; /* Doing a device reset will cause the usbfs driver to get unbound from any interfaces it is bound to. By voluntarily unbinding the usbfs driver ourself, we stop the kernel from rebinding the interface after reset (which would end up with the interface getting bound to the in kernel driver if any). */ for (i = 0; i < USB_MAXINTERFACES; i++) { if (handle->claimed_interfaces & (1L << i)) { release_interface(handle, i); } } usbi_mutex_lock(&handle->lock); r = ioctl(fd, IOCTL_USBFS_RESET, NULL); if (r) { if (errno == ENODEV) { ret = LIBUSB_ERROR_NOT_FOUND; goto out; } usbi_err(HANDLE_CTX(handle), "reset failed error %d errno %d", r, errno); ret = LIBUSB_ERROR_OTHER; goto out; } /* And re-claim any interfaces which were claimed before the reset */ for (i = 0; i < USB_MAXINTERFACES; i++) { if (handle->claimed_interfaces & (1L << i)) { /* * A driver may have completed modprobing during * IOCTL_USBFS_RESET, and bound itself as soon as * IOCTL_USBFS_RESET released the device lock */ r = detach_kernel_driver_and_claim(handle, i); if (r) { usbi_warn(HANDLE_CTX(handle), "failed to re-claim interface %d after reset: %s", i, libusb_error_name(r)); handle->claimed_interfaces &= ~(1L << i); ret = LIBUSB_ERROR_NOT_FOUND; } } } out: usbi_mutex_unlock(&handle->lock); return ret; } static int do_streams_ioctl(struct libusb_device_handle *handle, long req, uint32_t num_streams, unsigned char *endpoints, int num_endpoints) { int r, fd = _device_handle_priv(handle)->fd; struct usbfs_streams *streams; if (num_endpoints > 30) /* Max 15 in + 15 out eps */ return LIBUSB_ERROR_INVALID_PARAM; streams = malloc(sizeof(struct usbfs_streams) + num_endpoints); if (!streams) return LIBUSB_ERROR_NO_MEM; streams->num_streams = num_streams; streams->num_eps = num_endpoints; memcpy(streams->eps, endpoints, num_endpoints); r = ioctl(fd, req, streams); free(streams); if (r < 0) { if (errno == ENOTTY) return LIBUSB_ERROR_NOT_SUPPORTED; else if (errno == EINVAL) return LIBUSB_ERROR_INVALID_PARAM; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "streams-ioctl failed error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } return r; } static int op_alloc_streams(struct libusb_device_handle *handle, uint32_t num_streams, unsigned char *endpoints, int num_endpoints) { return do_streams_ioctl(handle, IOCTL_USBFS_ALLOC_STREAMS, num_streams, endpoints, num_endpoints); } static int op_free_streams(struct libusb_device_handle *handle, unsigned char *endpoints, int num_endpoints) { return do_streams_ioctl(handle, IOCTL_USBFS_FREE_STREAMS, 0, endpoints, num_endpoints); } static unsigned char *op_dev_mem_alloc(struct libusb_device_handle *handle, size_t len) { struct linux_device_handle_priv *hpriv = _device_handle_priv(handle); unsigned char *buffer = (unsigned char *)mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, hpriv->fd, 0); if (buffer == MAP_FAILED) { usbi_err(HANDLE_CTX(handle), "alloc dev mem failed errno %d", errno); return NULL; } return buffer; } static int op_dev_mem_free(struct libusb_device_handle *handle, unsigned char *buffer, size_t len) { if (munmap(buffer, len) != 0) { usbi_err(HANDLE_CTX(handle), "free dev mem failed errno %d", errno); return LIBUSB_ERROR_OTHER; } else { return LIBUSB_SUCCESS; } } static int op_kernel_driver_active(struct libusb_device_handle *handle, int interface) { int fd = _device_handle_priv(handle)->fd; struct usbfs_getdriver getdrv; int r; getdrv.interface = interface; r = ioctl(fd, IOCTL_USBFS_GETDRIVER, &getdrv); if (r) { if (errno == ENODATA) return 0; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "get driver failed error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } return (strcmp(getdrv.driver, "usbfs") == 0) ? 0 : 1; } static int op_detach_kernel_driver(struct libusb_device_handle *handle, int interface) { int fd = _device_handle_priv(handle)->fd; struct usbfs_ioctl command; struct usbfs_getdriver getdrv; int r; command.ifno = interface; command.ioctl_code = IOCTL_USBFS_DISCONNECT; command.data = NULL; getdrv.interface = interface; r = ioctl(fd, IOCTL_USBFS_GETDRIVER, &getdrv); if (r == 0 && strcmp(getdrv.driver, "usbfs") == 0) return LIBUSB_ERROR_NOT_FOUND; r = ioctl(fd, IOCTL_USBFS_IOCTL, &command); if (r) { if (errno == ENODATA) return LIBUSB_ERROR_NOT_FOUND; else if (errno == EINVAL) return LIBUSB_ERROR_INVALID_PARAM; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "detach failed error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } return 0; } static int op_attach_kernel_driver(struct libusb_device_handle *handle, int interface) { int fd = _device_handle_priv(handle)->fd; struct usbfs_ioctl command; int r; command.ifno = interface; command.ioctl_code = IOCTL_USBFS_CONNECT; command.data = NULL; r = ioctl(fd, IOCTL_USBFS_IOCTL, &command); if (r < 0) { if (errno == ENODATA) return LIBUSB_ERROR_NOT_FOUND; else if (errno == EINVAL) return LIBUSB_ERROR_INVALID_PARAM; else if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; else if (errno == EBUSY) return LIBUSB_ERROR_BUSY; usbi_err(HANDLE_CTX(handle), "attach failed error %d errno %d", r, errno); return LIBUSB_ERROR_OTHER; } else if (r == 0) { return LIBUSB_ERROR_NOT_FOUND; } return 0; } static int detach_kernel_driver_and_claim(struct libusb_device_handle *handle, int interface) { struct usbfs_disconnect_claim dc; int r, fd = _device_handle_priv(handle)->fd; dc.interface = interface; strcpy(dc.driver, "usbfs"); dc.flags = USBFS_DISCONNECT_CLAIM_EXCEPT_DRIVER; r = ioctl(fd, IOCTL_USBFS_DISCONNECT_CLAIM, &dc); if (r != 0 && errno != ENOTTY) { switch (errno) { case EBUSY: return LIBUSB_ERROR_BUSY; case EINVAL: return LIBUSB_ERROR_INVALID_PARAM; case ENODEV: return LIBUSB_ERROR_NO_DEVICE; } usbi_err(HANDLE_CTX(handle), "disconnect-and-claim failed errno %d", errno); return LIBUSB_ERROR_OTHER; } else if (r == 0) return 0; /* Fallback code for kernels which don't support the disconnect-and-claim ioctl */ r = op_detach_kernel_driver(handle, interface); if (r != 0 && r != LIBUSB_ERROR_NOT_FOUND) return r; return claim_interface(handle, interface); } static int op_claim_interface(struct libusb_device_handle *handle, int iface) { if (handle->auto_detach_kernel_driver) return detach_kernel_driver_and_claim(handle, iface); else return claim_interface(handle, iface); } static int op_release_interface(struct libusb_device_handle *handle, int iface) { int r; r = release_interface(handle, iface); if (r) return r; if (handle->auto_detach_kernel_driver) op_attach_kernel_driver(handle, iface); return 0; } static void op_destroy_device(struct libusb_device *dev) { struct linux_device_priv *priv = _device_priv(dev); if (priv->descriptors) free(priv->descriptors); if (priv->sysfs_dir) free(priv->sysfs_dir); } /* URBs are discarded in reverse order of submission to avoid races. */ static int discard_urbs(struct usbi_transfer *itransfer, int first, int last_plus_one) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); struct linux_device_handle_priv *dpriv = _device_handle_priv(transfer->dev_handle); int i, ret = 0; struct usbfs_urb *urb; for (i = last_plus_one - 1; i >= first; i--) { if (LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type) urb = tpriv->iso_urbs[i]; else urb = &tpriv->urbs[i]; if (0 == ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, urb)) continue; if (EINVAL == errno) { usbi_dbg("URB not found --> assuming ready to be reaped"); if (i == (last_plus_one - 1)) ret = LIBUSB_ERROR_NOT_FOUND; } else if (ENODEV == errno) { usbi_dbg("Device not found for URB --> assuming ready to be reaped"); ret = LIBUSB_ERROR_NO_DEVICE; } else { usbi_warn(TRANSFER_CTX(transfer), "unrecognised discard errno %d", errno); ret = LIBUSB_ERROR_OTHER; } } return ret; } static void free_iso_urbs(struct linux_transfer_priv *tpriv) { int i; for (i = 0; i < tpriv->num_urbs; i++) { struct usbfs_urb *urb = tpriv->iso_urbs[i]; if (!urb) break; free(urb); } free(tpriv->iso_urbs); tpriv->iso_urbs = NULL; } static int submit_bulk_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); struct linux_device_handle_priv *dpriv = _device_handle_priv(transfer->dev_handle); struct usbfs_urb *urbs; int is_out = (transfer->endpoint & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_OUT; int bulk_buffer_len, use_bulk_continuation; int r; int i; if (is_out && (transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) && !(dpriv->caps & USBFS_CAP_ZERO_PACKET)) return LIBUSB_ERROR_NOT_SUPPORTED; /* * Older versions of usbfs place a 16kb limit on bulk URBs. We work * around this by splitting large transfers into 16k blocks, and then * submit all urbs at once. it would be simpler to submit one urb at * a time, but there is a big performance gain doing it this way. * * Newer versions lift the 16k limit (USBFS_CAP_NO_PACKET_SIZE_LIM), * using arbritary large transfers can still be a bad idea though, as * the kernel needs to allocate physical contiguous memory for this, * which may fail for large buffers. * * The kernel solves this problem by splitting the transfer into * blocks itself when the host-controller is scatter-gather capable * (USBFS_CAP_BULK_SCATTER_GATHER), which most controllers are. * * Last, there is the issue of short-transfers when splitting, for * short split-transfers to work reliable USBFS_CAP_BULK_CONTINUATION * is needed, but this is not always available. */ if (dpriv->caps & USBFS_CAP_BULK_SCATTER_GATHER) { /* Good! Just submit everything in one go */ bulk_buffer_len = transfer->length ? transfer->length : 1; use_bulk_continuation = 0; } else if (dpriv->caps & USBFS_CAP_BULK_CONTINUATION) { /* Split the transfers and use bulk-continuation to avoid issues with short-transfers */ bulk_buffer_len = MAX_BULK_BUFFER_LENGTH; use_bulk_continuation = 1; } else if (dpriv->caps & USBFS_CAP_NO_PACKET_SIZE_LIM) { /* Don't split, assume the kernel can alloc the buffer (otherwise the submit will fail with -ENOMEM) */ bulk_buffer_len = transfer->length ? transfer->length : 1; use_bulk_continuation = 0; } else { /* Bad, splitting without bulk-continuation, short transfers which end before the last urb will not work reliable! */ /* Note we don't warn here as this is "normal" on kernels < 2.6.32 and not a problem for most applications */ bulk_buffer_len = MAX_BULK_BUFFER_LENGTH; use_bulk_continuation = 0; } int num_urbs = transfer->length / bulk_buffer_len; int last_urb_partial = 0; if (transfer->length == 0) { num_urbs = 1; } else if ((transfer->length % bulk_buffer_len) > 0) { last_urb_partial = 1; num_urbs++; } usbi_dbg("need %d urbs for new transfer with length %d", num_urbs, transfer->length); urbs = calloc(num_urbs, sizeof(struct usbfs_urb)); if (!urbs) return LIBUSB_ERROR_NO_MEM; tpriv->urbs = urbs; tpriv->num_urbs = num_urbs; tpriv->num_retired = 0; tpriv->reap_action = NORMAL; tpriv->reap_status = LIBUSB_TRANSFER_COMPLETED; for (i = 0; i < num_urbs; i++) { struct usbfs_urb *urb = &urbs[i]; urb->usercontext = itransfer; switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_BULK: urb->type = USBFS_URB_TYPE_BULK; urb->stream_id = 0; break; case LIBUSB_TRANSFER_TYPE_BULK_STREAM: urb->type = USBFS_URB_TYPE_BULK; urb->stream_id = itransfer->stream_id; break; case LIBUSB_TRANSFER_TYPE_INTERRUPT: urb->type = USBFS_URB_TYPE_INTERRUPT; break; } urb->endpoint = transfer->endpoint; urb->buffer = transfer->buffer + (i * bulk_buffer_len); /* don't set the short not ok flag for the last URB */ if (use_bulk_continuation && !is_out && (i < num_urbs - 1)) urb->flags = USBFS_URB_SHORT_NOT_OK; if (i == num_urbs - 1 && last_urb_partial) urb->buffer_length = transfer->length % bulk_buffer_len; else if (transfer->length == 0) urb->buffer_length = 0; else urb->buffer_length = bulk_buffer_len; if (i > 0 && use_bulk_continuation) urb->flags |= USBFS_URB_BULK_CONTINUATION; /* we have already checked that the flag is supported */ if (is_out && i == num_urbs - 1 && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) urb->flags |= USBFS_URB_ZERO_PACKET; r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urb); if (r < 0) { if (errno == ENODEV) { r = LIBUSB_ERROR_NO_DEVICE; } else { usbi_err(TRANSFER_CTX(transfer), "submiturb failed error %d errno=%d", r, errno); r = LIBUSB_ERROR_IO; } /* if the first URB submission fails, we can simply free up and * return failure immediately. */ if (i == 0) { usbi_dbg("first URB failed, easy peasy"); free(urbs); tpriv->urbs = NULL; return r; } /* if it's not the first URB that failed, the situation is a bit * tricky. we may need to discard all previous URBs. there are * complications: * - discarding is asynchronous - discarded urbs will be reaped * later. the user must not have freed the transfer when the * discarded URBs are reaped, otherwise libusb will be using * freed memory. * - the earlier URBs may have completed successfully and we do * not want to throw away any data. * - this URB failing may be no error; EREMOTEIO means that * this transfer simply didn't need all the URBs we submitted * so, we report that the transfer was submitted successfully and * in case of error we discard all previous URBs. later when * the final reap completes we can report error to the user, * or success if an earlier URB was completed successfully. */ tpriv->reap_action = EREMOTEIO == errno ? COMPLETED_EARLY : SUBMIT_FAILED; /* The URBs we haven't submitted yet we count as already * retired. */ tpriv->num_retired += num_urbs - i; /* If we completed short then don't try to discard. */ if (COMPLETED_EARLY == tpriv->reap_action) return 0; discard_urbs(itransfer, 0, i); usbi_dbg("reporting successful submission but waiting for %d " "discards before reporting error", i); return 0; } } return 0; } static int submit_iso_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); struct linux_device_handle_priv *dpriv = _device_handle_priv(transfer->dev_handle); struct usbfs_urb **urbs; int num_packets = transfer->num_iso_packets; int num_packets_remaining; int i, j; int num_urbs; unsigned int packet_len; unsigned int total_len = 0; unsigned char *urb_buffer = transfer->buffer; if (num_packets < 1) return LIBUSB_ERROR_INVALID_PARAM; /* usbfs places arbitrary limits on iso URBs. this limit has changed * at least three times, but we attempt to detect this limit during * init and check it here. if the kernel rejects the request due to * its size, we return an error indicating such to the user. */ for (i = 0; i < num_packets; i++) { packet_len = transfer->iso_packet_desc[i].length; if (packet_len > max_iso_packet_len) { usbi_warn(TRANSFER_CTX(transfer), "iso packet length of %u bytes exceeds maximum of %u bytes", packet_len, max_iso_packet_len); return LIBUSB_ERROR_INVALID_PARAM; } total_len += packet_len; } if (transfer->length < (int)total_len) return LIBUSB_ERROR_INVALID_PARAM; /* usbfs limits the number of iso packets per URB */ num_urbs = (num_packets + (MAX_ISO_PACKETS_PER_URB - 1)) / MAX_ISO_PACKETS_PER_URB; usbi_dbg("need %d urbs for new transfer with length %d", num_urbs, transfer->length); urbs = calloc(num_urbs, sizeof(*urbs)); if (!urbs) return LIBUSB_ERROR_NO_MEM; tpriv->iso_urbs = urbs; tpriv->num_urbs = num_urbs; tpriv->num_retired = 0; tpriv->reap_action = NORMAL; tpriv->iso_packet_offset = 0; /* allocate + initialize each URB with the correct number of packets */ num_packets_remaining = num_packets; for (i = 0, j = 0; i < num_urbs; i++) { int num_packets_in_urb = MIN(num_packets_remaining, MAX_ISO_PACKETS_PER_URB); struct usbfs_urb *urb; size_t alloc_size; int k; alloc_size = sizeof(*urb) + (num_packets_in_urb * sizeof(struct usbfs_iso_packet_desc)); urb = calloc(1, alloc_size); if (!urb) { free_iso_urbs(tpriv); return LIBUSB_ERROR_NO_MEM; } urbs[i] = urb; /* populate packet lengths */ for (k = 0; k < num_packets_in_urb; j++, k++) { packet_len = transfer->iso_packet_desc[j].length; urb->buffer_length += packet_len; urb->iso_frame_desc[k].length = packet_len; } urb->usercontext = itransfer; urb->type = USBFS_URB_TYPE_ISO; /* FIXME: interface for non-ASAP data? */ urb->flags = USBFS_URB_ISO_ASAP; urb->endpoint = transfer->endpoint; urb->number_of_packets = num_packets_in_urb; urb->buffer = urb_buffer; urb_buffer += urb->buffer_length; num_packets_remaining -= num_packets_in_urb; } /* submit URBs */ for (i = 0; i < num_urbs; i++) { int r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urbs[i]); if (r < 0) { if (errno == ENODEV) { r = LIBUSB_ERROR_NO_DEVICE; } else if (errno == EINVAL) { usbi_warn(TRANSFER_CTX(transfer), "submiturb failed, transfer too large"); r = LIBUSB_ERROR_INVALID_PARAM; } else if (errno == EMSGSIZE) { usbi_warn(TRANSFER_CTX(transfer), "submiturb failed, iso packet length too large"); r = LIBUSB_ERROR_INVALID_PARAM; } else { usbi_err(TRANSFER_CTX(transfer), "submiturb failed error %d errno=%d", r, errno); r = LIBUSB_ERROR_IO; } /* if the first URB submission fails, we can simply free up and * return failure immediately. */ if (i == 0) { usbi_dbg("first URB failed, easy peasy"); free_iso_urbs(tpriv); return r; } /* if it's not the first URB that failed, the situation is a bit * tricky. we must discard all previous URBs. there are * complications: * - discarding is asynchronous - discarded urbs will be reaped * later. the user must not have freed the transfer when the * discarded URBs are reaped, otherwise libusb will be using * freed memory. * - the earlier URBs may have completed successfully and we do * not want to throw away any data. * so, in this case we discard all the previous URBs BUT we report * that the transfer was submitted successfully. then later when * the final discard completes we can report error to the user. */ tpriv->reap_action = SUBMIT_FAILED; /* The URBs we haven't submitted yet we count as already * retired. */ tpriv->num_retired = num_urbs - i; discard_urbs(itransfer, 0, i); usbi_dbg("reporting successful submission but waiting for %d " "discards before reporting error", i); return 0; } } return 0; } static int submit_control_transfer(struct usbi_transfer *itransfer) { struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct linux_device_handle_priv *dpriv = _device_handle_priv(transfer->dev_handle); struct usbfs_urb *urb; int r; if (transfer->length - LIBUSB_CONTROL_SETUP_SIZE > MAX_CTRL_BUFFER_LENGTH) return LIBUSB_ERROR_INVALID_PARAM; urb = calloc(1, sizeof(struct usbfs_urb)); if (!urb) return LIBUSB_ERROR_NO_MEM; tpriv->urbs = urb; tpriv->num_urbs = 1; tpriv->reap_action = NORMAL; urb->usercontext = itransfer; urb->type = USBFS_URB_TYPE_CONTROL; urb->endpoint = transfer->endpoint; urb->buffer = transfer->buffer; urb->buffer_length = transfer->length; r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urb); if (r < 0) { free(urb); tpriv->urbs = NULL; if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(TRANSFER_CTX(transfer), "submiturb failed error %d errno=%d", r, errno); return LIBUSB_ERROR_IO; } return 0; } static int op_submit_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: return submit_control_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_BULK_STREAM: return submit_bulk_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_INTERRUPT: return submit_bulk_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: return submit_iso_transfer(itransfer); default: usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); return LIBUSB_ERROR_INVALID_PARAM; } } static int op_cancel_transfer(struct usbi_transfer *itransfer) { struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); int r; if (!tpriv->urbs) return LIBUSB_ERROR_NOT_FOUND; r = discard_urbs(itransfer, 0, tpriv->num_urbs); if (r != 0) return r; switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_BULK_STREAM: if (tpriv->reap_action == ERROR) break; /* else, fall through */ default: tpriv->reap_action = CANCELLED; } return 0; } static void op_clear_transfer_priv(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_BULK_STREAM: case LIBUSB_TRANSFER_TYPE_INTERRUPT: if (tpriv->urbs) { free(tpriv->urbs); tpriv->urbs = NULL; } break; case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: if (tpriv->iso_urbs) { free_iso_urbs(tpriv); tpriv->iso_urbs = NULL; } break; default: usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); } } static int handle_bulk_completion(struct usbi_transfer *itransfer, struct usbfs_urb *urb) { struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); int urb_idx = urb - tpriv->urbs; usbi_mutex_lock(&itransfer->lock); usbi_dbg("handling completion status %d of bulk urb %d/%d", urb->status, urb_idx + 1, tpriv->num_urbs); tpriv->num_retired++; if (tpriv->reap_action != NORMAL) { /* cancelled, submit_fail, or completed early */ usbi_dbg("abnormal reap: urb status %d", urb->status); /* even though we're in the process of cancelling, it's possible that * we may receive some data in these URBs that we don't want to lose. * examples: * 1. while the kernel is cancelling all the packets that make up an * URB, a few of them might complete. so we get back a successful * cancellation *and* some data. * 2. we receive a short URB which marks the early completion condition, * so we start cancelling the remaining URBs. however, we're too * slow and another URB completes (or at least completes partially). * (this can't happen since we always use BULK_CONTINUATION.) * * When this happens, our objectives are not to lose any "surplus" data, * and also to stick it at the end of the previously-received data * (closing any holes), so that libusb reports the total amount of * transferred data and presents it in a contiguous chunk. */ if (urb->actual_length > 0) { unsigned char *target = transfer->buffer + itransfer->transferred; usbi_dbg("received %d bytes of surplus data", urb->actual_length); if (urb->buffer != target) { usbi_dbg("moving surplus data from offset %d to offset %d", (unsigned char *) urb->buffer - transfer->buffer, target - transfer->buffer); memmove(target, urb->buffer, urb->actual_length); } itransfer->transferred += urb->actual_length; } if (tpriv->num_retired == tpriv->num_urbs) { usbi_dbg("abnormal reap: last URB handled, reporting"); if (tpriv->reap_action != COMPLETED_EARLY && tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED) tpriv->reap_status = LIBUSB_TRANSFER_ERROR; goto completed; } goto out_unlock; } itransfer->transferred += urb->actual_length; /* Many of these errors can occur on *any* urb of a multi-urb * transfer. When they do, we tear down the rest of the transfer. */ switch (urb->status) { case 0: break; case -EREMOTEIO: /* short transfer */ break; case -ENOENT: /* cancelled */ case -ECONNRESET: break; case -ENODEV: case -ESHUTDOWN: usbi_dbg("device removed"); tpriv->reap_status = LIBUSB_TRANSFER_NO_DEVICE; goto cancel_remaining; case -EPIPE: usbi_dbg("detected endpoint stall"); if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED) tpriv->reap_status = LIBUSB_TRANSFER_STALL; goto cancel_remaining; case -EOVERFLOW: /* overflow can only ever occur in the last urb */ usbi_dbg("overflow, actual_length=%d", urb->actual_length); if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED) tpriv->reap_status = LIBUSB_TRANSFER_OVERFLOW; goto completed; case -ETIME: case -EPROTO: case -EILSEQ: case -ECOMM: case -ENOSR: usbi_dbg("low level error %d", urb->status); tpriv->reap_action = ERROR; goto cancel_remaining; default: usbi_warn(ITRANSFER_CTX(itransfer), "unrecognised urb status %d", urb->status); tpriv->reap_action = ERROR; goto cancel_remaining; } /* if we're the last urb or we got less data than requested then we're * done */ if (urb_idx == tpriv->num_urbs - 1) { usbi_dbg("last URB in transfer --> complete!"); goto completed; } else if (urb->actual_length < urb->buffer_length) { usbi_dbg("short transfer %d/%d --> complete!", urb->actual_length, urb->buffer_length); if (tpriv->reap_action == NORMAL) tpriv->reap_action = COMPLETED_EARLY; } else goto out_unlock; cancel_remaining: if (ERROR == tpriv->reap_action && LIBUSB_TRANSFER_COMPLETED == tpriv->reap_status) tpriv->reap_status = LIBUSB_TRANSFER_ERROR; if (tpriv->num_retired == tpriv->num_urbs) /* nothing to cancel */ goto completed; /* cancel remaining urbs and wait for their completion before * reporting results */ discard_urbs(itransfer, urb_idx + 1, tpriv->num_urbs); out_unlock: usbi_mutex_unlock(&itransfer->lock); return 0; completed: free(tpriv->urbs); tpriv->urbs = NULL; usbi_mutex_unlock(&itransfer->lock); return CANCELLED == tpriv->reap_action ? usbi_handle_transfer_cancellation(itransfer) : usbi_handle_transfer_completion(itransfer, tpriv->reap_status); } static int handle_iso_completion(struct usbi_transfer *itransfer, struct usbfs_urb *urb) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); int num_urbs = tpriv->num_urbs; int urb_idx = 0; int i; enum libusb_transfer_status status = LIBUSB_TRANSFER_COMPLETED; usbi_mutex_lock(&itransfer->lock); for (i = 0; i < num_urbs; i++) { if (urb == tpriv->iso_urbs[i]) { urb_idx = i + 1; break; } } if (urb_idx == 0) { usbi_err(TRANSFER_CTX(transfer), "could not locate urb!"); usbi_mutex_unlock(&itransfer->lock); return LIBUSB_ERROR_NOT_FOUND; } usbi_dbg("handling completion status %d of iso urb %d/%d", urb->status, urb_idx, num_urbs); /* copy isochronous results back in */ for (i = 0; i < urb->number_of_packets; i++) { struct usbfs_iso_packet_desc *urb_desc = &urb->iso_frame_desc[i]; struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[tpriv->iso_packet_offset++]; lib_desc->status = LIBUSB_TRANSFER_COMPLETED; switch (urb_desc->status) { case 0: break; case -ENOENT: /* cancelled */ case -ECONNRESET: break; case -ENODEV: case -ESHUTDOWN: usbi_dbg("device removed"); lib_desc->status = LIBUSB_TRANSFER_NO_DEVICE; break; case -EPIPE: usbi_dbg("detected endpoint stall"); lib_desc->status = LIBUSB_TRANSFER_STALL; break; case -EOVERFLOW: usbi_dbg("overflow error"); lib_desc->status = LIBUSB_TRANSFER_OVERFLOW; break; case -ETIME: case -EPROTO: case -EILSEQ: case -ECOMM: case -ENOSR: case -EXDEV: usbi_dbg("low-level USB error %d", urb_desc->status); lib_desc->status = LIBUSB_TRANSFER_ERROR; break; default: usbi_warn(TRANSFER_CTX(transfer), "unrecognised urb status %d", urb_desc->status); lib_desc->status = LIBUSB_TRANSFER_ERROR; break; } lib_desc->actual_length = urb_desc->actual_length; } tpriv->num_retired++; if (tpriv->reap_action != NORMAL) { /* cancelled or submit_fail */ usbi_dbg("CANCEL: urb status %d", urb->status); if (tpriv->num_retired == num_urbs) { usbi_dbg("CANCEL: last URB handled, reporting"); free_iso_urbs(tpriv); if (tpriv->reap_action == CANCELLED) { usbi_mutex_unlock(&itransfer->lock); return usbi_handle_transfer_cancellation(itransfer); } else { usbi_mutex_unlock(&itransfer->lock); return usbi_handle_transfer_completion(itransfer, LIBUSB_TRANSFER_ERROR); } } goto out; } switch (urb->status) { case 0: break; case -ENOENT: /* cancelled */ case -ECONNRESET: break; case -ESHUTDOWN: usbi_dbg("device removed"); status = LIBUSB_TRANSFER_NO_DEVICE; break; default: usbi_warn(TRANSFER_CTX(transfer), "unrecognised urb status %d", urb->status); status = LIBUSB_TRANSFER_ERROR; break; } /* if we're the last urb then we're done */ if (urb_idx == num_urbs) { usbi_dbg("last URB in transfer --> complete!"); free_iso_urbs(tpriv); usbi_mutex_unlock(&itransfer->lock); return usbi_handle_transfer_completion(itransfer, status); } out: usbi_mutex_unlock(&itransfer->lock); return 0; } static int handle_control_completion(struct usbi_transfer *itransfer, struct usbfs_urb *urb) { struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); int status; usbi_mutex_lock(&itransfer->lock); usbi_dbg("handling completion status %d", urb->status); itransfer->transferred += urb->actual_length; if (tpriv->reap_action == CANCELLED) { if (urb->status != 0 && urb->status != -ENOENT) usbi_warn(ITRANSFER_CTX(itransfer), "cancel: unrecognised urb status %d", urb->status); free(tpriv->urbs); tpriv->urbs = NULL; usbi_mutex_unlock(&itransfer->lock); return usbi_handle_transfer_cancellation(itransfer); } switch (urb->status) { case 0: status = LIBUSB_TRANSFER_COMPLETED; break; case -ENOENT: /* cancelled */ status = LIBUSB_TRANSFER_CANCELLED; break; case -ENODEV: case -ESHUTDOWN: usbi_dbg("device removed"); status = LIBUSB_TRANSFER_NO_DEVICE; break; case -EPIPE: usbi_dbg("unsupported control request"); status = LIBUSB_TRANSFER_STALL; break; case -EOVERFLOW: usbi_dbg("control overflow error"); status = LIBUSB_TRANSFER_OVERFLOW; break; case -ETIME: case -EPROTO: case -EILSEQ: case -ECOMM: case -ENOSR: usbi_dbg("low-level bus error occurred"); status = LIBUSB_TRANSFER_ERROR; break; default: usbi_warn(ITRANSFER_CTX(itransfer), "unrecognised urb status %d", urb->status); status = LIBUSB_TRANSFER_ERROR; break; } free(tpriv->urbs); tpriv->urbs = NULL; usbi_mutex_unlock(&itransfer->lock); return usbi_handle_transfer_completion(itransfer, status); } static int reap_for_handle(struct libusb_device_handle *handle) { struct linux_device_handle_priv *hpriv = _device_handle_priv(handle); int r; struct usbfs_urb *urb; struct usbi_transfer *itransfer; struct libusb_transfer *transfer; r = ioctl(hpriv->fd, IOCTL_USBFS_REAPURBNDELAY, &urb); if (r == -1 && errno == EAGAIN) return 1; if (r < 0) { if (errno == ENODEV) return LIBUSB_ERROR_NO_DEVICE; usbi_err(HANDLE_CTX(handle), "reap failed error %d errno=%d", r, errno); return LIBUSB_ERROR_IO; } itransfer = urb->usercontext; transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); usbi_dbg("urb type=%d status=%d transferred=%d", urb->type, urb->status, urb->actual_length); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: return handle_iso_completion(itransfer, urb); case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_BULK_STREAM: case LIBUSB_TRANSFER_TYPE_INTERRUPT: return handle_bulk_completion(itransfer, urb); case LIBUSB_TRANSFER_TYPE_CONTROL: return handle_control_completion(itransfer, urb); default: usbi_err(HANDLE_CTX(handle), "unrecognised endpoint type %x", transfer->type); return LIBUSB_ERROR_OTHER; } } static int op_handle_events(struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready) { int r; unsigned int i = 0; usbi_mutex_lock(&ctx->open_devs_lock); for (i = 0; i < nfds && num_ready > 0; i++) { struct pollfd *pollfd = &fds[i]; struct libusb_device_handle *handle; struct linux_device_handle_priv *hpriv = NULL; if (!pollfd->revents) continue; num_ready--; list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) { hpriv = _device_handle_priv(handle); if (hpriv->fd == pollfd->fd) break; } if (!hpriv || hpriv->fd != pollfd->fd) { usbi_err(ctx, "cannot find handle for fd %d", pollfd->fd); continue; } if (pollfd->revents & POLLERR) { /* remove the fd from the pollfd set so that it doesn't continuously * trigger an event, and flag that it has been removed so op_close() * doesn't try to remove it a second time */ usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->fd); hpriv->fd_removed = 1; /* device will still be marked as attached if hotplug monitor thread * hasn't processed remove event yet */ usbi_mutex_static_lock(&linux_hotplug_lock); if (handle->dev->attached) linux_device_disconnected(handle->dev->bus_number, handle->dev->device_address); usbi_mutex_static_unlock(&linux_hotplug_lock); if (hpriv->caps & USBFS_CAP_REAP_AFTER_DISCONNECT) { do { r = reap_for_handle(handle); } while (r == 0); } usbi_handle_disconnect(handle); continue; } do { r = reap_for_handle(handle); } while (r == 0); if (r == 1 || r == LIBUSB_ERROR_NO_DEVICE) continue; else if (r < 0) goto out; } r = 0; out: usbi_mutex_unlock(&ctx->open_devs_lock); return r; } static int op_clock_gettime(int clk_id, struct timespec *tp) { switch (clk_id) { case USBI_CLOCK_MONOTONIC: return clock_gettime(monotonic_clkid, tp); case USBI_CLOCK_REALTIME: return clock_gettime(CLOCK_REALTIME, tp); default: return LIBUSB_ERROR_INVALID_PARAM; } } #ifdef USBI_TIMERFD_AVAILABLE static clockid_t op_get_timerfd_clockid(void) { return monotonic_clkid; } #endif const struct usbi_os_backend usbi_backend = { .name = "Linux usbfs", .caps = USBI_CAP_HAS_HID_ACCESS|USBI_CAP_SUPPORTS_DETACH_KERNEL_DRIVER, .init = op_init, .exit = op_exit, .get_device_list = NULL, .hotplug_poll = op_hotplug_poll, .get_device_descriptor = op_get_device_descriptor, .get_active_config_descriptor = op_get_active_config_descriptor, .get_config_descriptor = op_get_config_descriptor, .get_config_descriptor_by_value = op_get_config_descriptor_by_value, .open = op_open, .close = op_close, .get_configuration = op_get_configuration, .set_configuration = op_set_configuration, .claim_interface = op_claim_interface, .release_interface = op_release_interface, .set_interface_altsetting = op_set_interface, .clear_halt = op_clear_halt, .reset_device = op_reset_device, .alloc_streams = op_alloc_streams, .free_streams = op_free_streams, .dev_mem_alloc = op_dev_mem_alloc, .dev_mem_free = op_dev_mem_free, .kernel_driver_active = op_kernel_driver_active, .detach_kernel_driver = op_detach_kernel_driver, .attach_kernel_driver = op_attach_kernel_driver, .destroy_device = op_destroy_device, .submit_transfer = op_submit_transfer, .cancel_transfer = op_cancel_transfer, .clear_transfer_priv = op_clear_transfer_priv, .handle_events = op_handle_events, .clock_gettime = op_clock_gettime, #ifdef USBI_TIMERFD_AVAILABLE .get_timerfd_clockid = op_get_timerfd_clockid, #endif .device_priv_size = sizeof(struct linux_device_priv), .device_handle_priv_size = sizeof(struct linux_device_handle_priv), .transfer_priv_size = sizeof(struct linux_transfer_priv), }; release/libusb/libusb/os/linux_udev.c0000664000000000000000000002043714261476162016724 0ustar rootroot/* -*- Mode: C; c-basic-offset:8 ; indent-tabs-mode:t -*- */ /* * Linux usbfs backend for libusb * Copyright (C) 2007-2009 Daniel Drake * Copyright (c) 2001 Johannes Erdfelt * Copyright (c) 2012-2013 Nathan Hjelm * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "libusbi.h" #include "linux_usbfs.h" /* udev context */ static struct udev *udev_ctx = NULL; static int udev_monitor_fd = -1; static int udev_control_pipe[2] = {-1, -1}; static struct udev_monitor *udev_monitor = NULL; static pthread_t linux_event_thread; static void udev_hotplug_event(struct udev_device* udev_dev); static void *linux_udev_event_thread_main(void *arg); int linux_udev_start_event_monitor(void) { int r; assert(udev_ctx == NULL); udev_ctx = udev_new(); if (!udev_ctx) { usbi_err(NULL, "could not create udev context"); goto err; } udev_monitor = udev_monitor_new_from_netlink(udev_ctx, "udev"); if (!udev_monitor) { usbi_err(NULL, "could not initialize udev monitor"); goto err_free_ctx; } r = udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device"); if (r) { usbi_err(NULL, "could not initialize udev monitor filter for \"usb\" subsystem"); goto err_free_monitor; } if (udev_monitor_enable_receiving(udev_monitor)) { usbi_err(NULL, "failed to enable the udev monitor"); goto err_free_monitor; } udev_monitor_fd = udev_monitor_get_fd(udev_monitor); #if defined(FD_CLOEXEC) /* Make sure the udev file descriptor is marked as CLOEXEC */ r = fcntl(udev_monitor_fd, F_GETFD); if (r == -1) { usbi_err(NULL, "geting udev monitor fd flags (%d)", errno); goto err_free_monitor; } if (!(r & FD_CLOEXEC)) { if (fcntl(udev_monitor_fd, F_SETFD, r | FD_CLOEXEC) == -1) { usbi_err(NULL, "setting udev monitor fd flags (%d)", errno); goto err_free_monitor; } } #endif /* Some older versions of udev are not non-blocking by default, * so make sure this is set */ r = fcntl(udev_monitor_fd, F_GETFL); if (r == -1) { usbi_err(NULL, "getting udev monitor fd status flags (%d)", errno); goto err_free_monitor; } if (!(r & O_NONBLOCK)) { if (fcntl(udev_monitor_fd, F_SETFL, r | O_NONBLOCK) == -1) { usbi_err(NULL, "setting udev monitor fd status flags (%d)", errno); goto err_free_monitor; } } r = usbi_pipe(udev_control_pipe); if (r) { usbi_err(NULL, "could not create udev control pipe"); goto err_free_monitor; } r = pthread_create(&linux_event_thread, NULL, linux_udev_event_thread_main, NULL); if (r) { usbi_err(NULL, "creating hotplug event thread (%d)", r); goto err_close_pipe; } return LIBUSB_SUCCESS; err_close_pipe: close(udev_control_pipe[0]); close(udev_control_pipe[1]); err_free_monitor: udev_monitor_unref(udev_monitor); udev_monitor = NULL; udev_monitor_fd = -1; err_free_ctx: udev_unref(udev_ctx); err: udev_ctx = NULL; return LIBUSB_ERROR_OTHER; } int linux_udev_stop_event_monitor(void) { char dummy = 1; int r; assert(udev_ctx != NULL); assert(udev_monitor != NULL); assert(udev_monitor_fd != -1); /* Write some dummy data to the control pipe and * wait for the thread to exit */ r = write(udev_control_pipe[1], &dummy, sizeof(dummy)); if (r <= 0) { usbi_warn(NULL, "udev control pipe signal failed"); } pthread_join(linux_event_thread, NULL); /* Release the udev monitor */ udev_monitor_unref(udev_monitor); udev_monitor = NULL; udev_monitor_fd = -1; /* Clean up the udev context */ udev_unref(udev_ctx); udev_ctx = NULL; /* close and reset control pipe */ close(udev_control_pipe[0]); close(udev_control_pipe[1]); udev_control_pipe[0] = -1; udev_control_pipe[1] = -1; return LIBUSB_SUCCESS; } static void *linux_udev_event_thread_main(void *arg) { char dummy; int r; ssize_t nb; struct udev_device* udev_dev; struct pollfd fds[] = { {.fd = udev_control_pipe[0], .events = POLLIN}, {.fd = udev_monitor_fd, .events = POLLIN}, }; usbi_dbg("udev event thread entering."); while ((r = poll(fds, 2, -1)) >= 0 || errno == EINTR) { if (r < 0) { /* temporary failure */ continue; } if (fds[0].revents & POLLIN) { /* activity on control pipe, read the byte and exit */ nb = read(udev_control_pipe[0], &dummy, sizeof(dummy)); if (nb <= 0) { usbi_warn(NULL, "udev control pipe read failed"); } break; } if (fds[1].revents & POLLIN) { usbi_mutex_static_lock(&linux_hotplug_lock); udev_dev = udev_monitor_receive_device(udev_monitor); if (udev_dev) udev_hotplug_event(udev_dev); usbi_mutex_static_unlock(&linux_hotplug_lock); } } usbi_dbg("udev event thread exiting"); return NULL; } static int udev_device_info(struct libusb_context *ctx, int detached, struct udev_device *udev_dev, uint8_t *busnum, uint8_t *devaddr, const char **sys_name) { const char *dev_node; dev_node = udev_device_get_devnode(udev_dev); if (!dev_node) { return LIBUSB_ERROR_OTHER; } *sys_name = udev_device_get_sysname(udev_dev); if (!*sys_name) { return LIBUSB_ERROR_OTHER; } return linux_get_device_address(ctx, detached, busnum, devaddr, dev_node, *sys_name); } static void udev_hotplug_event(struct udev_device* udev_dev) { const char* udev_action; const char* sys_name = NULL; uint8_t busnum = 0, devaddr = 0; int detached; int r; do { udev_action = udev_device_get_action(udev_dev); if (!udev_action) { break; } detached = !strncmp(udev_action, "remove", 6); r = udev_device_info(NULL, detached, udev_dev, &busnum, &devaddr, &sys_name); if (LIBUSB_SUCCESS != r) { break; } usbi_dbg("udev hotplug event. action: %s.", udev_action); if (strncmp(udev_action, "add", 3) == 0) { linux_hotplug_enumerate(busnum, devaddr, sys_name); } else if (detached) { linux_device_disconnected(busnum, devaddr); } else { usbi_err(NULL, "ignoring udev action %s", udev_action); } } while (0); udev_device_unref(udev_dev); } int linux_udev_scan_devices(struct libusb_context *ctx) { struct udev_enumerate *enumerator; struct udev_list_entry *devices, *entry; struct udev_device *udev_dev; const char *sys_name; int r; assert(udev_ctx != NULL); enumerator = udev_enumerate_new(udev_ctx); if (NULL == enumerator) { usbi_err(ctx, "error creating udev enumerator"); return LIBUSB_ERROR_OTHER; } udev_enumerate_add_match_subsystem(enumerator, "usb"); udev_enumerate_add_match_property(enumerator, "DEVTYPE", "usb_device"); udev_enumerate_scan_devices(enumerator); devices = udev_enumerate_get_list_entry(enumerator); entry = NULL; udev_list_entry_foreach(entry, devices) { const char *path = udev_list_entry_get_name(entry); uint8_t busnum = 0, devaddr = 0; udev_dev = udev_device_new_from_syspath(udev_ctx, path); r = udev_device_info(ctx, 0, udev_dev, &busnum, &devaddr, &sys_name); if (r) { udev_device_unref(udev_dev); continue; } linux_enumerate_device(ctx, busnum, devaddr, sys_name); udev_device_unref(udev_dev); } udev_enumerate_unref(enumerator); return LIBUSB_SUCCESS; } void linux_udev_hotplug_poll(void) { struct udev_device* udev_dev; usbi_mutex_static_lock(&linux_hotplug_lock); do { udev_dev = udev_monitor_receive_device(udev_monitor); if (udev_dev) { usbi_dbg("Handling hotplug event from hotplug_poll"); udev_hotplug_event(udev_dev); } } while (udev_dev); usbi_mutex_static_unlock(&linux_hotplug_lock); } release/libusb/libusb/os/threads_posix.h0000664000000000000000000000547714261476162017432 0ustar rootroot/* * libusb synchronization using POSIX Threads * * Copyright © 2010 Peter Stuge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef LIBUSB_THREADS_POSIX_H #define LIBUSB_THREADS_POSIX_H #include #ifdef HAVE_SYS_TIME_H #include #endif #define USBI_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER typedef pthread_mutex_t usbi_mutex_static_t; static inline void usbi_mutex_static_lock(usbi_mutex_static_t *mutex) { (void)pthread_mutex_lock(mutex); } static inline void usbi_mutex_static_unlock(usbi_mutex_static_t *mutex) { (void)pthread_mutex_unlock(mutex); } typedef pthread_mutex_t usbi_mutex_t; static inline int usbi_mutex_init(usbi_mutex_t *mutex) { return pthread_mutex_init(mutex, NULL); } static inline void usbi_mutex_lock(usbi_mutex_t *mutex) { (void)pthread_mutex_lock(mutex); } static inline void usbi_mutex_unlock(usbi_mutex_t *mutex) { (void)pthread_mutex_unlock(mutex); } static inline int usbi_mutex_trylock(usbi_mutex_t *mutex) { return pthread_mutex_trylock(mutex); } static inline void usbi_mutex_destroy(usbi_mutex_t *mutex) { (void)pthread_mutex_destroy(mutex); } typedef pthread_cond_t usbi_cond_t; static inline void usbi_cond_init(pthread_cond_t *cond) { (void)pthread_cond_init(cond, NULL); } static inline int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex) { return pthread_cond_wait(cond, mutex); } int usbi_cond_timedwait(usbi_cond_t *cond, usbi_mutex_t *mutex, const struct timeval *tv); static inline void usbi_cond_broadcast(usbi_cond_t *cond) { (void)pthread_cond_broadcast(cond); } static inline void usbi_cond_destroy(usbi_cond_t *cond) { (void)pthread_cond_destroy(cond); } typedef pthread_key_t usbi_tls_key_t; static inline void usbi_tls_key_create(usbi_tls_key_t *key) { (void)pthread_key_create(key, NULL); } static inline void *usbi_tls_key_get(usbi_tls_key_t key) { return pthread_getspecific(key); } static inline void usbi_tls_key_set(usbi_tls_key_t key, void *ptr) { (void)pthread_setspecific(key, ptr); } static inline void usbi_tls_key_delete(usbi_tls_key_t key) { (void)pthread_key_delete(key); } int usbi_get_tid(void); #endif /* LIBUSB_THREADS_POSIX_H */ release/libusb/libusb/os/poll_posix.h0000664000000000000000000000033214261476162016727 0ustar rootroot#ifndef LIBUSB_POLL_POSIX_H #define LIBUSB_POLL_POSIX_H #define usbi_write write #define usbi_read read #define usbi_close close #define usbi_poll poll int usbi_pipe(int pipefd[2]); #endif /* LIBUSB_POLL_POSIX_H */ release/libusb/libusb/os/wince_usb.h0000664000000000000000000001253314261476162016523 0ustar rootroot/* * Windows CE backend for libusb 1.0 * Copyright © 2011-2013 RealVNC Ltd. * Portions taken from Windows backend, which is * Copyright © 2009-2010 Pete Batard * With contributions from Michael Plante, Orin Eman et al. * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer * Major code testing contribution by Xiaofan Chen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #pragma once #include "windows_common.h" #include #include "poll_windows.h" #define MAX_DEVICE_COUNT 256 // This is a modified dump of the types in the ceusbkwrapper.h library header // with functions transformed into extern pointers. // // This backend dynamically loads ceusbkwrapper.dll and doesn't include // ceusbkwrapper.h directly to simplify the build process. The kernel // side wrapper driver is built using the platform image build tools, // which makes it difficult to reference directly from the libusb build // system. struct UKW_DEVICE_PRIV; typedef struct UKW_DEVICE_PRIV *UKW_DEVICE; typedef UKW_DEVICE *PUKW_DEVICE, *LPUKW_DEVICE; typedef struct { UINT8 bLength; UINT8 bDescriptorType; UINT16 bcdUSB; UINT8 bDeviceClass; UINT8 bDeviceSubClass; UINT8 bDeviceProtocol; UINT8 bMaxPacketSize0; UINT16 idVendor; UINT16 idProduct; UINT16 bcdDevice; UINT8 iManufacturer; UINT8 iProduct; UINT8 iSerialNumber; UINT8 bNumConfigurations; } UKW_DEVICE_DESCRIPTOR, *PUKW_DEVICE_DESCRIPTOR, *LPUKW_DEVICE_DESCRIPTOR; typedef struct { UINT8 bmRequestType; UINT8 bRequest; UINT16 wValue; UINT16 wIndex; UINT16 wLength; } UKW_CONTROL_HEADER, *PUKW_CONTROL_HEADER, *LPUKW_CONTROL_HEADER; // Collection of flags which can be used when issuing transfer requests /* Indicates that the transfer direction is 'in' */ #define UKW_TF_IN_TRANSFER 0x00000001 /* Indicates that the transfer direction is 'out' */ #define UKW_TF_OUT_TRANSFER 0x00000000 /* Specifies that the transfer should complete as soon as possible, * even if no OVERLAPPED structure has been provided. */ #define UKW_TF_NO_WAIT 0x00000100 /* Indicates that transfers shorter than the buffer are ok */ #define UKW_TF_SHORT_TRANSFER_OK 0x00000200 #define UKW_TF_SEND_TO_DEVICE 0x00010000 #define UKW_TF_SEND_TO_INTERFACE 0x00020000 #define UKW_TF_SEND_TO_ENDPOINT 0x00040000 /* Don't block when waiting for memory allocations */ #define UKW_TF_DONT_BLOCK_FOR_MEM 0x00080000 /* Value to use when dealing with configuration values, such as UkwGetConfigDescriptor, * to specify the currently active configuration for the device. */ #define UKW_ACTIVE_CONFIGURATION -1 DLL_DECLARE_HANDLE(ceusbkwrapper); DLL_DECLARE_FUNC(WINAPI, HANDLE, UkwOpenDriver, ()); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwGetDeviceList, (HANDLE, LPUKW_DEVICE, DWORD, LPDWORD)); DLL_DECLARE_FUNC(WINAPI, void, UkwReleaseDeviceList, (HANDLE, LPUKW_DEVICE, DWORD)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwGetDeviceAddress, (UKW_DEVICE, unsigned char*, unsigned char*, unsigned long*)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwGetDeviceDescriptor, (UKW_DEVICE, LPUKW_DEVICE_DESCRIPTOR)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwGetConfigDescriptor, (UKW_DEVICE, DWORD, LPVOID, DWORD, LPDWORD)); DLL_DECLARE_FUNC(WINAPI, void, UkwCloseDriver, (HANDLE)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwCancelTransfer, (UKW_DEVICE, LPOVERLAPPED, DWORD)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwIssueControlTransfer, (UKW_DEVICE, DWORD, LPUKW_CONTROL_HEADER, LPVOID, DWORD, LPDWORD, LPOVERLAPPED)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwClaimInterface, (UKW_DEVICE, DWORD)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwReleaseInterface, (UKW_DEVICE, DWORD)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwSetInterfaceAlternateSetting, (UKW_DEVICE, DWORD, DWORD)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwClearHaltHost, (UKW_DEVICE, UCHAR)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwClearHaltDevice, (UKW_DEVICE, UCHAR)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwGetConfig, (UKW_DEVICE, PUCHAR)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwSetConfig, (UKW_DEVICE, UCHAR)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwResetDevice, (UKW_DEVICE)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwKernelDriverActive, (UKW_DEVICE, DWORD, PBOOL)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwAttachKernelDriver, (UKW_DEVICE, DWORD)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwDetachKernelDriver, (UKW_DEVICE, DWORD)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwIssueBulkTransfer, (UKW_DEVICE, DWORD, UCHAR, LPVOID, DWORD, LPDWORD, LPOVERLAPPED)); DLL_DECLARE_FUNC(WINAPI, BOOL, UkwIsPipeHalted, (UKW_DEVICE, UCHAR, LPBOOL)); // Used to determine if an endpoint status really is halted on a failed transfer. #define STATUS_HALT_FLAG 0x1 struct wince_device_priv { UKW_DEVICE dev; UKW_DEVICE_DESCRIPTOR desc; }; struct wince_transfer_priv { struct winfd pollable_fd; uint8_t interface_number; }; release/libusb/libusb/os/darwin_usb.h0000664000000000000000000001474014261476162016704 0ustar rootroot/* * darwin backend for libusb 1.0 * Copyright © 2008-2015 Nathan Hjelm * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #if !defined(LIBUSB_DARWIN_H) #define LIBUSB_DARWIN_H #include "libusbi.h" #include #include #include #include /* IOUSBInterfaceInferface */ /* New in OS 10.12.0. */ #if defined (kIOUSBInterfaceInterfaceID800) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 101200) #define usb_interface_t IOUSBInterfaceInterface800 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID800 #define InterfaceVersion 800 /* New in OS 10.10.0. */ #elif defined (kIOUSBInterfaceInterfaceID700) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 101000) #define usb_interface_t IOUSBInterfaceInterface700 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID700 #define InterfaceVersion 700 /* New in OS 10.9.0. */ #elif defined (kIOUSBInterfaceInterfaceID650) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1090) #define usb_interface_t IOUSBInterfaceInterface650 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID650 #define InterfaceVersion 650 /* New in OS 10.8.2 but can't test deployment target to that granularity, so round up. */ #elif defined (kIOUSBInterfaceInterfaceID550) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1090) #define usb_interface_t IOUSBInterfaceInterface550 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID550 #define InterfaceVersion 550 /* New in OS 10.7.3 but can't test deployment target to that granularity, so round up. */ #elif defined (kIOUSBInterfaceInterfaceID500) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1080) #define usb_interface_t IOUSBInterfaceInterface500 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID500 #define InterfaceVersion 500 /* New in OS 10.5.0. */ #elif defined (kIOUSBInterfaceInterfaceID300) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1050) #define usb_interface_t IOUSBInterfaceInterface300 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID300 #define InterfaceVersion 300 /* New in OS 10.4.5 (or 10.4.6?) but can't test deployment target to that granularity, so round up. */ #elif defined (kIOUSBInterfaceInterfaceID245) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1050) #define usb_interface_t IOUSBInterfaceInterface245 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID245 #define InterfaceVersion 245 /* New in OS 10.4.0. */ #elif defined (kIOUSBInterfaceInterfaceID220) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1040) #define usb_interface_t IOUSBInterfaceInterface220 #define InterfaceInterfaceID kIOUSBInterfaceInterfaceID220 #define InterfaceVersion 220 #else #error "IOUSBFamily is too old. Please upgrade your SDK and/or deployment target" #endif /* IOUSBDeviceInterface */ /* New in OS 10.9.0. */ #if defined (kIOUSBDeviceInterfaceID650) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1090) #define usb_device_t IOUSBDeviceInterface650 #define DeviceInterfaceID kIOUSBDeviceInterfaceID650 #define DeviceVersion 650 /* New in OS 10.7.3 but can't test deployment target to that granularity, so round up. */ #elif defined (kIOUSBDeviceInterfaceID500) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1080) #define usb_device_t IOUSBDeviceInterface500 #define DeviceInterfaceID kIOUSBDeviceInterfaceID500 #define DeviceVersion 500 /* New in OS 10.5.4 but can't test deployment target to that granularity, so round up. */ #elif defined (kIOUSBDeviceInterfaceID320) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1060) #define usb_device_t IOUSBDeviceInterface320 #define DeviceInterfaceID kIOUSBDeviceInterfaceID320 #define DeviceVersion 320 /* New in OS 10.5.0. */ #elif defined (kIOUSBDeviceInterfaceID300) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1050) #define usb_device_t IOUSBDeviceInterface300 #define DeviceInterfaceID kIOUSBDeviceInterfaceID300 #define DeviceVersion 300 /* New in OS 10.4.5 (or 10.4.6?) but can't test deployment target to that granularity, so round up. */ #elif defined (kIOUSBDeviceInterfaceID245) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1050) #define usb_device_t IOUSBDeviceInterface245 #define DeviceInterfaceID kIOUSBDeviceInterfaceID245 #define DeviceVersion 245 /* New in OS 10.2.3 but can't test deployment target to that granularity, so round up. */ #elif defined (kIOUSBDeviceInterfaceID197) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1030) #define usb_device_t IOUSBDeviceInterface197 #define DeviceInterfaceID kIOUSBDeviceInterfaceID197 #define DeviceVersion 197 #else #error "IOUSBFamily is too old. Please upgrade your SDK and/or deployment target" #endif #if !defined(IO_OBJECT_NULL) #define IO_OBJECT_NULL ((io_object_t) 0) #endif typedef IOCFPlugInInterface *io_cf_plugin_ref_t; typedef IONotificationPortRef io_notification_port_t; /* private structures */ struct darwin_cached_device { struct list_head list; IOUSBDeviceDescriptor dev_descriptor; UInt32 location; UInt64 parent_session; UInt64 session; UInt16 address; char sys_path[21]; usb_device_t **device; int open_count; UInt8 first_config, active_config, port; int can_enumerate; int refcount; }; struct darwin_device_priv { struct darwin_cached_device *dev; }; struct darwin_device_handle_priv { int is_open; CFRunLoopSourceRef cfSource; struct darwin_interface { usb_interface_t **interface; uint8_t num_endpoints; CFRunLoopSourceRef cfSource; uint64_t frames[256]; uint8_t endpoint_addrs[USB_MAXENDPOINTS]; } interfaces[USB_MAXINTERFACES]; }; struct darwin_transfer_priv { /* Isoc */ IOUSBIsocFrame *isoc_framelist; int num_iso_packets; /* Control */ IOUSBDevRequestTO req; /* Bulk */ /* Completion status */ IOReturn result; UInt32 size; }; #endif release/libusb/libusb/os/openbsd_usb.c0000664000000000000000000004414214261476162017044 0ustar rootroot/* * Copyright © 2011-2013 Martin Pieuchot * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include "libusbi.h" struct device_priv { char *devname; /* name of the ugen(4) node */ int fd; /* device file descriptor */ unsigned char *cdesc; /* active config descriptor */ usb_device_descriptor_t ddesc; /* usb device descriptor */ }; struct handle_priv { int endpoints[USB_MAX_ENDPOINTS]; }; /* * Backend functions */ static int obsd_get_device_list(struct libusb_context *, struct discovered_devs **); static int obsd_open(struct libusb_device_handle *); static void obsd_close(struct libusb_device_handle *); static int obsd_get_device_descriptor(struct libusb_device *, unsigned char *, int *); static int obsd_get_active_config_descriptor(struct libusb_device *, unsigned char *, size_t, int *); static int obsd_get_config_descriptor(struct libusb_device *, uint8_t, unsigned char *, size_t, int *); static int obsd_get_configuration(struct libusb_device_handle *, int *); static int obsd_set_configuration(struct libusb_device_handle *, int); static int obsd_claim_interface(struct libusb_device_handle *, int); static int obsd_release_interface(struct libusb_device_handle *, int); static int obsd_set_interface_altsetting(struct libusb_device_handle *, int, int); static int obsd_clear_halt(struct libusb_device_handle *, unsigned char); static int obsd_reset_device(struct libusb_device_handle *); static void obsd_destroy_device(struct libusb_device *); static int obsd_submit_transfer(struct usbi_transfer *); static int obsd_cancel_transfer(struct usbi_transfer *); static void obsd_clear_transfer_priv(struct usbi_transfer *); static int obsd_handle_transfer_completion(struct usbi_transfer *); static int obsd_clock_gettime(int, struct timespec *); /* * Private functions */ static int _errno_to_libusb(int); static int _cache_active_config_descriptor(struct libusb_device *); static int _sync_control_transfer(struct usbi_transfer *); static int _sync_gen_transfer(struct usbi_transfer *); static int _access_endpoint(struct libusb_transfer *); static int _bus_open(int); const struct usbi_os_backend usbi_backend = { "Synchronous OpenBSD backend", 0, NULL, /* init() */ NULL, /* exit() */ NULL, /* set_option() */ obsd_get_device_list, NULL, /* hotplug_poll */ obsd_open, obsd_close, obsd_get_device_descriptor, obsd_get_active_config_descriptor, obsd_get_config_descriptor, NULL, /* get_config_descriptor_by_value() */ obsd_get_configuration, obsd_set_configuration, obsd_claim_interface, obsd_release_interface, obsd_set_interface_altsetting, obsd_clear_halt, obsd_reset_device, NULL, /* alloc_streams */ NULL, /* free_streams */ NULL, /* dev_mem_alloc() */ NULL, /* dev_mem_free() */ NULL, /* kernel_driver_active() */ NULL, /* detach_kernel_driver() */ NULL, /* attach_kernel_driver() */ obsd_destroy_device, obsd_submit_transfer, obsd_cancel_transfer, obsd_clear_transfer_priv, NULL, /* handle_events() */ obsd_handle_transfer_completion, obsd_clock_gettime, 0, /* context_priv_size */ sizeof(struct device_priv), sizeof(struct handle_priv), 0, /* transfer_priv_size */ }; #define DEVPATH "/dev/" #define USBDEV DEVPATH "usb" int obsd_get_device_list(struct libusb_context * ctx, struct discovered_devs **discdevs) { struct discovered_devs *ddd; struct libusb_device *dev; struct device_priv *dpriv; struct usb_device_info di; struct usb_device_ddesc dd; unsigned long session_id; char devices[USB_MAX_DEVICES]; char busnode[16]; char *udevname; int fd, addr, i, j; usbi_dbg(""); for (i = 0; i < 8; i++) { snprintf(busnode, sizeof(busnode), USBDEV "%d", i); if ((fd = open(busnode, O_RDWR)) < 0) { if (errno != ENOENT && errno != ENXIO) usbi_err(ctx, "could not open %s", busnode); continue; } bzero(devices, sizeof(devices)); for (addr = 1; addr < USB_MAX_DEVICES; addr++) { if (devices[addr]) continue; di.udi_addr = addr; if (ioctl(fd, USB_DEVICEINFO, &di) < 0) continue; /* * XXX If ugen(4) is attached to the USB device * it will be used. */ udevname = NULL; for (j = 0; j < USB_MAX_DEVNAMES; j++) if (!strncmp("ugen", di.udi_devnames[j], 4)) { udevname = strdup(di.udi_devnames[j]); break; } session_id = (di.udi_bus << 8 | di.udi_addr); dev = usbi_get_device_by_session_id(ctx, session_id); if (dev == NULL) { dev = usbi_alloc_device(ctx, session_id); if (dev == NULL) { close(fd); return (LIBUSB_ERROR_NO_MEM); } dev->bus_number = di.udi_bus; dev->device_address = di.udi_addr; dev->speed = di.udi_speed; dpriv = (struct device_priv *)dev->os_priv; dpriv->fd = -1; dpriv->cdesc = NULL; dpriv->devname = udevname; dd.udd_bus = di.udi_bus; dd.udd_addr = di.udi_addr; if (ioctl(fd, USB_DEVICE_GET_DDESC, &dd) < 0) { libusb_unref_device(dev); continue; } dpriv->ddesc = dd.udd_desc; if (_cache_active_config_descriptor(dev)) { libusb_unref_device(dev); continue; } if (usbi_sanitize_device(dev)) { libusb_unref_device(dev); continue; } } ddd = discovered_devs_append(*discdevs, dev); if (ddd == NULL) { close(fd); return (LIBUSB_ERROR_NO_MEM); } libusb_unref_device(dev); *discdevs = ddd; devices[addr] = 1; } close(fd); } return (LIBUSB_SUCCESS); } int obsd_open(struct libusb_device_handle *handle) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; char devnode[16]; if (dpriv->devname) { /* * Only open ugen(4) attached devices read-write, all * read-only operations are done through the bus node. */ snprintf(devnode, sizeof(devnode), DEVPATH "%s.00", dpriv->devname); dpriv->fd = open(devnode, O_RDWR); if (dpriv->fd < 0) return _errno_to_libusb(errno); usbi_dbg("open %s: fd %d", devnode, dpriv->fd); } return (LIBUSB_SUCCESS); } void obsd_close(struct libusb_device_handle *handle) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; if (dpriv->devname) { usbi_dbg("close: fd %d", dpriv->fd); close(dpriv->fd); dpriv->fd = -1; } } int obsd_get_device_descriptor(struct libusb_device *dev, unsigned char *buf, int *host_endian) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; usbi_dbg(""); memcpy(buf, &dpriv->ddesc, DEVICE_DESC_LENGTH); *host_endian = 0; return (LIBUSB_SUCCESS); } int obsd_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buf, size_t len, int *host_endian) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; usb_config_descriptor_t *ucd = (usb_config_descriptor_t *)dpriv->cdesc; len = MIN(len, UGETW(ucd->wTotalLength)); usbi_dbg("len %d", len); memcpy(buf, dpriv->cdesc, len); *host_endian = 0; return (len); } int obsd_get_config_descriptor(struct libusb_device *dev, uint8_t idx, unsigned char *buf, size_t len, int *host_endian) { struct usb_device_fdesc udf; int fd, err; if ((fd = _bus_open(dev->bus_number)) < 0) return _errno_to_libusb(errno); udf.udf_bus = dev->bus_number; udf.udf_addr = dev->device_address; udf.udf_config_index = idx; udf.udf_size = len; udf.udf_data = buf; usbi_dbg("index %d, len %d", udf.udf_config_index, len); if (ioctl(fd, USB_DEVICE_GET_FDESC, &udf) < 0) { err = errno; close(fd); return _errno_to_libusb(err); } close(fd); *host_endian = 0; return (len); } int obsd_get_configuration(struct libusb_device_handle *handle, int *config) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; usb_config_descriptor_t *ucd = (usb_config_descriptor_t *)dpriv->cdesc; *config = ucd->bConfigurationValue; usbi_dbg("bConfigurationValue %d", *config); return (LIBUSB_SUCCESS); } int obsd_set_configuration(struct libusb_device_handle *handle, int config) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; if (dpriv->devname == NULL) return (LIBUSB_ERROR_NOT_SUPPORTED); usbi_dbg("bConfigurationValue %d", config); if (ioctl(dpriv->fd, USB_SET_CONFIG, &config) < 0) return _errno_to_libusb(errno); return _cache_active_config_descriptor(handle->dev); } int obsd_claim_interface(struct libusb_device_handle *handle, int iface) { struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; int i; for (i = 0; i < USB_MAX_ENDPOINTS; i++) hpriv->endpoints[i] = -1; return (LIBUSB_SUCCESS); } int obsd_release_interface(struct libusb_device_handle *handle, int iface) { struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; int i; for (i = 0; i < USB_MAX_ENDPOINTS; i++) if (hpriv->endpoints[i] >= 0) close(hpriv->endpoints[i]); return (LIBUSB_SUCCESS); } int obsd_set_interface_altsetting(struct libusb_device_handle *handle, int iface, int altsetting) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; struct usb_alt_interface intf; if (dpriv->devname == NULL) return (LIBUSB_ERROR_NOT_SUPPORTED); usbi_dbg("iface %d, setting %d", iface, altsetting); memset(&intf, 0, sizeof(intf)); intf.uai_interface_index = iface; intf.uai_alt_no = altsetting; if (ioctl(dpriv->fd, USB_SET_ALTINTERFACE, &intf) < 0) return _errno_to_libusb(errno); return (LIBUSB_SUCCESS); } int obsd_clear_halt(struct libusb_device_handle *handle, unsigned char endpoint) { struct usb_ctl_request req; int fd, err; if ((fd = _bus_open(handle->dev->bus_number)) < 0) return _errno_to_libusb(errno); usbi_dbg(""); req.ucr_addr = handle->dev->device_address; req.ucr_request.bmRequestType = UT_WRITE_ENDPOINT; req.ucr_request.bRequest = UR_CLEAR_FEATURE; USETW(req.ucr_request.wValue, UF_ENDPOINT_HALT); USETW(req.ucr_request.wIndex, endpoint); USETW(req.ucr_request.wLength, 0); if (ioctl(fd, USB_REQUEST, &req) < 0) { err = errno; close(fd); return _errno_to_libusb(err); } close(fd); return (LIBUSB_SUCCESS); } int obsd_reset_device(struct libusb_device_handle *handle) { usbi_dbg(""); return (LIBUSB_ERROR_NOT_SUPPORTED); } void obsd_destroy_device(struct libusb_device *dev) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; usbi_dbg(""); free(dpriv->cdesc); free(dpriv->devname); } int obsd_submit_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer; struct handle_priv *hpriv; int err = 0; usbi_dbg(""); transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); hpriv = (struct handle_priv *)transfer->dev_handle->os_priv; switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: err = _sync_control_transfer(itransfer); break; case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: if (IS_XFEROUT(transfer)) { /* Isochronous write is not supported */ err = LIBUSB_ERROR_NOT_SUPPORTED; break; } err = _sync_gen_transfer(itransfer); break; case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: if (IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) { err = LIBUSB_ERROR_NOT_SUPPORTED; break; } err = _sync_gen_transfer(itransfer); break; case LIBUSB_TRANSFER_TYPE_BULK_STREAM: err = LIBUSB_ERROR_NOT_SUPPORTED; break; } if (err) return (err); usbi_signal_transfer_completion(itransfer); return (LIBUSB_SUCCESS); } int obsd_cancel_transfer(struct usbi_transfer *itransfer) { usbi_dbg(""); return (LIBUSB_ERROR_NOT_SUPPORTED); } void obsd_clear_transfer_priv(struct usbi_transfer *itransfer) { usbi_dbg(""); /* Nothing to do */ } int obsd_handle_transfer_completion(struct usbi_transfer *itransfer) { return usbi_handle_transfer_completion(itransfer, LIBUSB_TRANSFER_COMPLETED); } int obsd_clock_gettime(int clkid, struct timespec *tp) { usbi_dbg("clock %d", clkid); if (clkid == USBI_CLOCK_REALTIME) return clock_gettime(CLOCK_REALTIME, tp); if (clkid == USBI_CLOCK_MONOTONIC) return clock_gettime(CLOCK_MONOTONIC, tp); return (LIBUSB_ERROR_INVALID_PARAM); } int _errno_to_libusb(int err) { usbi_dbg("error: %s (%d)", strerror(err), err); switch (err) { case EIO: return (LIBUSB_ERROR_IO); case EACCES: return (LIBUSB_ERROR_ACCESS); case ENOENT: return (LIBUSB_ERROR_NO_DEVICE); case ENOMEM: return (LIBUSB_ERROR_NO_MEM); case ETIMEDOUT: return (LIBUSB_ERROR_TIMEOUT); } return (LIBUSB_ERROR_OTHER); } int _cache_active_config_descriptor(struct libusb_device *dev) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; struct usb_device_cdesc udc; struct usb_device_fdesc udf; unsigned char* buf; int fd, len, err; if ((fd = _bus_open(dev->bus_number)) < 0) return _errno_to_libusb(errno); usbi_dbg("fd %d, addr %d", fd, dev->device_address); udc.udc_bus = dev->bus_number; udc.udc_addr = dev->device_address; udc.udc_config_index = USB_CURRENT_CONFIG_INDEX; if (ioctl(fd, USB_DEVICE_GET_CDESC, &udc) < 0) { err = errno; close(fd); return _errno_to_libusb(errno); } usbi_dbg("active bLength %d", udc.udc_desc.bLength); len = UGETW(udc.udc_desc.wTotalLength); buf = malloc(len); if (buf == NULL) return (LIBUSB_ERROR_NO_MEM); udf.udf_bus = dev->bus_number; udf.udf_addr = dev->device_address; udf.udf_config_index = udc.udc_config_index; udf.udf_size = len; udf.udf_data = buf; usbi_dbg("index %d, len %d", udf.udf_config_index, len); if (ioctl(fd, USB_DEVICE_GET_FDESC, &udf) < 0) { err = errno; close(fd); free(buf); return _errno_to_libusb(err); } close(fd); if (dpriv->cdesc) free(dpriv->cdesc); dpriv->cdesc = buf; return (LIBUSB_SUCCESS); } int _sync_control_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer; struct libusb_control_setup *setup; struct device_priv *dpriv; struct usb_ctl_request req; transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); dpriv = (struct device_priv *)transfer->dev_handle->dev->os_priv; setup = (struct libusb_control_setup *)transfer->buffer; usbi_dbg("type %x request %x value %x index %d length %d timeout %d", setup->bmRequestType, setup->bRequest, libusb_le16_to_cpu(setup->wValue), libusb_le16_to_cpu(setup->wIndex), libusb_le16_to_cpu(setup->wLength), transfer->timeout); req.ucr_addr = transfer->dev_handle->dev->device_address; req.ucr_request.bmRequestType = setup->bmRequestType; req.ucr_request.bRequest = setup->bRequest; /* Don't use USETW, libusb already deals with the endianness */ (*(uint16_t *)req.ucr_request.wValue) = setup->wValue; (*(uint16_t *)req.ucr_request.wIndex) = setup->wIndex; (*(uint16_t *)req.ucr_request.wLength) = setup->wLength; req.ucr_data = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0) req.ucr_flags = USBD_SHORT_XFER_OK; if (dpriv->devname == NULL) { /* * XXX If the device is not attached to ugen(4) it is * XXX still possible to submit a control transfer but * XXX with the default timeout only. */ int fd, err; if ((fd = _bus_open(transfer->dev_handle->dev->bus_number)) < 0) return _errno_to_libusb(errno); if ((ioctl(fd, USB_REQUEST, &req)) < 0) { err = errno; close(fd); return _errno_to_libusb(err); } close(fd); } else { if ((ioctl(dpriv->fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0) return _errno_to_libusb(errno); if ((ioctl(dpriv->fd, USB_DO_REQUEST, &req)) < 0) return _errno_to_libusb(errno); } itransfer->transferred = req.ucr_actlen; usbi_dbg("transferred %d", itransfer->transferred); return (0); } int _access_endpoint(struct libusb_transfer *transfer) { struct handle_priv *hpriv; struct device_priv *dpriv; char devnode[16]; int fd, endpt; mode_t mode; hpriv = (struct handle_priv *)transfer->dev_handle->os_priv; dpriv = (struct device_priv *)transfer->dev_handle->dev->os_priv; endpt = UE_GET_ADDR(transfer->endpoint); mode = IS_XFERIN(transfer) ? O_RDONLY : O_WRONLY; usbi_dbg("endpoint %d mode %d", endpt, mode); if (hpriv->endpoints[endpt] < 0) { /* Pick the right endpoint node */ snprintf(devnode, sizeof(devnode), DEVPATH "%s.%02d", dpriv->devname, endpt); /* We may need to read/write to the same endpoint later. */ if (((fd = open(devnode, O_RDWR)) < 0) && (errno == ENXIO)) if ((fd = open(devnode, mode)) < 0) return (-1); hpriv->endpoints[endpt] = fd; } return (hpriv->endpoints[endpt]); } int _sync_gen_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer; struct device_priv *dpriv; int fd, nr = 1; transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); dpriv = (struct device_priv *)transfer->dev_handle->dev->os_priv; if (dpriv->devname == NULL) return (LIBUSB_ERROR_NOT_SUPPORTED); /* * Bulk, Interrupt or Isochronous transfer depends on the * endpoint and thus the node to open. */ if ((fd = _access_endpoint(transfer)) < 0) return _errno_to_libusb(errno); if ((ioctl(fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0) return _errno_to_libusb(errno); if (IS_XFERIN(transfer)) { if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0) if ((ioctl(fd, USB_SET_SHORT_XFER, &nr)) < 0) return _errno_to_libusb(errno); nr = read(fd, transfer->buffer, transfer->length); } else { nr = write(fd, transfer->buffer, transfer->length); } if (nr < 0) return _errno_to_libusb(errno); itransfer->transferred = nr; return (0); } int _bus_open(int number) { char busnode[16]; snprintf(busnode, sizeof(busnode), USBDEV "%d", number); return open(busnode, O_RDWR); } release/libusb/libusb/os/netbsd_usb.c0000664000000000000000000004005314261476161016665 0ustar rootroot/* * Copyright © 2011 Martin Pieuchot * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include "libusbi.h" struct device_priv { char devnode[16]; int fd; unsigned char *cdesc; /* active config descriptor */ usb_device_descriptor_t ddesc; /* usb device descriptor */ }; struct handle_priv { int endpoints[USB_MAX_ENDPOINTS]; }; /* * Backend functions */ static int netbsd_get_device_list(struct libusb_context *, struct discovered_devs **); static int netbsd_open(struct libusb_device_handle *); static void netbsd_close(struct libusb_device_handle *); static int netbsd_get_device_descriptor(struct libusb_device *, unsigned char *, int *); static int netbsd_get_active_config_descriptor(struct libusb_device *, unsigned char *, size_t, int *); static int netbsd_get_config_descriptor(struct libusb_device *, uint8_t, unsigned char *, size_t, int *); static int netbsd_get_configuration(struct libusb_device_handle *, int *); static int netbsd_set_configuration(struct libusb_device_handle *, int); static int netbsd_claim_interface(struct libusb_device_handle *, int); static int netbsd_release_interface(struct libusb_device_handle *, int); static int netbsd_set_interface_altsetting(struct libusb_device_handle *, int, int); static int netbsd_clear_halt(struct libusb_device_handle *, unsigned char); static int netbsd_reset_device(struct libusb_device_handle *); static void netbsd_destroy_device(struct libusb_device *); static int netbsd_submit_transfer(struct usbi_transfer *); static int netbsd_cancel_transfer(struct usbi_transfer *); static void netbsd_clear_transfer_priv(struct usbi_transfer *); static int netbsd_handle_transfer_completion(struct usbi_transfer *); static int netbsd_clock_gettime(int, struct timespec *); /* * Private functions */ static int _errno_to_libusb(int); static int _cache_active_config_descriptor(struct libusb_device *, int); static int _sync_control_transfer(struct usbi_transfer *); static int _sync_gen_transfer(struct usbi_transfer *); static int _access_endpoint(struct libusb_transfer *); const struct usbi_os_backend usbi_backend = { "Synchronous NetBSD backend", 0, NULL, /* init() */ NULL, /* exit() */ NULL, /* set_option() */ netbsd_get_device_list, NULL, /* hotplug_poll */ netbsd_open, netbsd_close, netbsd_get_device_descriptor, netbsd_get_active_config_descriptor, netbsd_get_config_descriptor, NULL, /* get_config_descriptor_by_value() */ netbsd_get_configuration, netbsd_set_configuration, netbsd_claim_interface, netbsd_release_interface, netbsd_set_interface_altsetting, netbsd_clear_halt, netbsd_reset_device, NULL, /* alloc_streams */ NULL, /* free_streams */ NULL, /* dev_mem_alloc() */ NULL, /* dev_mem_free() */ NULL, /* kernel_driver_active() */ NULL, /* detach_kernel_driver() */ NULL, /* attach_kernel_driver() */ netbsd_destroy_device, netbsd_submit_transfer, netbsd_cancel_transfer, netbsd_clear_transfer_priv, NULL, /* handle_events() */ netbsd_handle_transfer_completion, netbsd_clock_gettime, 0, /* context_priv_size */ sizeof(struct device_priv), sizeof(struct handle_priv), 0, /* transfer_priv_size */ }; int netbsd_get_device_list(struct libusb_context * ctx, struct discovered_devs **discdevs) { struct libusb_device *dev; struct device_priv *dpriv; struct usb_device_info di; unsigned long session_id; char devnode[16]; int fd, err, i; usbi_dbg(""); /* Only ugen(4) is supported */ for (i = 0; i < USB_MAX_DEVICES; i++) { /* Control endpoint is always .00 */ snprintf(devnode, sizeof(devnode), "/dev/ugen%d.00", i); if ((fd = open(devnode, O_RDONLY)) < 0) { if (errno != ENOENT && errno != ENXIO) usbi_err(ctx, "could not open %s", devnode); continue; } if (ioctl(fd, USB_GET_DEVICEINFO, &di) < 0) continue; session_id = (di.udi_bus << 8 | di.udi_addr); dev = usbi_get_device_by_session_id(ctx, session_id); if (dev == NULL) { dev = usbi_alloc_device(ctx, session_id); if (dev == NULL) return (LIBUSB_ERROR_NO_MEM); dev->bus_number = di.udi_bus; dev->device_address = di.udi_addr; dev->speed = di.udi_speed; dpriv = (struct device_priv *)dev->os_priv; strlcpy(dpriv->devnode, devnode, sizeof(devnode)); dpriv->fd = -1; if (ioctl(fd, USB_GET_DEVICE_DESC, &dpriv->ddesc) < 0) { err = errno; goto error; } dpriv->cdesc = NULL; if (_cache_active_config_descriptor(dev, fd)) { err = errno; goto error; } if ((err = usbi_sanitize_device(dev))) goto error; } close(fd); if (discovered_devs_append(*discdevs, dev) == NULL) return (LIBUSB_ERROR_NO_MEM); libusb_unref_device(dev); } return (LIBUSB_SUCCESS); error: close(fd); libusb_unref_device(dev); return _errno_to_libusb(err); } int netbsd_open(struct libusb_device_handle *handle) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; dpriv->fd = open(dpriv->devnode, O_RDWR); if (dpriv->fd < 0) { dpriv->fd = open(dpriv->devnode, O_RDONLY); if (dpriv->fd < 0) return _errno_to_libusb(errno); } usbi_dbg("open %s: fd %d", dpriv->devnode, dpriv->fd); return (LIBUSB_SUCCESS); } void netbsd_close(struct libusb_device_handle *handle) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; usbi_dbg("close: fd %d", dpriv->fd); close(dpriv->fd); dpriv->fd = -1; } int netbsd_get_device_descriptor(struct libusb_device *dev, unsigned char *buf, int *host_endian) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; usbi_dbg(""); memcpy(buf, &dpriv->ddesc, DEVICE_DESC_LENGTH); *host_endian = 0; return (LIBUSB_SUCCESS); } int netbsd_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buf, size_t len, int *host_endian) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; usb_config_descriptor_t *ucd; ucd = (usb_config_descriptor_t *) dpriv->cdesc; len = MIN(len, UGETW(ucd->wTotalLength)); usbi_dbg("len %d", len); memcpy(buf, dpriv->cdesc, len); *host_endian = 0; return len; } int netbsd_get_config_descriptor(struct libusb_device *dev, uint8_t idx, unsigned char *buf, size_t len, int *host_endian) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; struct usb_full_desc ufd; int fd, err; usbi_dbg("index %d, len %d", idx, len); /* A config descriptor may be requested before opening the device */ if (dpriv->fd >= 0) { fd = dpriv->fd; } else { fd = open(dpriv->devnode, O_RDONLY); if (fd < 0) return _errno_to_libusb(errno); } ufd.ufd_config_index = idx; ufd.ufd_size = len; ufd.ufd_data = buf; if ((ioctl(fd, USB_GET_FULL_DESC, &ufd)) < 0) { err = errno; if (dpriv->fd < 0) close(fd); return _errno_to_libusb(err); } if (dpriv->fd < 0) close(fd); *host_endian = 0; return len; } int netbsd_get_configuration(struct libusb_device_handle *handle, int *config) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; usbi_dbg(""); if (ioctl(dpriv->fd, USB_GET_CONFIG, config) < 0) return _errno_to_libusb(errno); usbi_dbg("configuration %d", *config); return (LIBUSB_SUCCESS); } int netbsd_set_configuration(struct libusb_device_handle *handle, int config) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; usbi_dbg("configuration %d", config); if (ioctl(dpriv->fd, USB_SET_CONFIG, &config) < 0) return _errno_to_libusb(errno); return _cache_active_config_descriptor(handle->dev, dpriv->fd); } int netbsd_claim_interface(struct libusb_device_handle *handle, int iface) { struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; int i; for (i = 0; i < USB_MAX_ENDPOINTS; i++) hpriv->endpoints[i] = -1; return (LIBUSB_SUCCESS); } int netbsd_release_interface(struct libusb_device_handle *handle, int iface) { struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv; int i; for (i = 0; i < USB_MAX_ENDPOINTS; i++) if (hpriv->endpoints[i] >= 0) close(hpriv->endpoints[i]); return (LIBUSB_SUCCESS); } int netbsd_set_interface_altsetting(struct libusb_device_handle *handle, int iface, int altsetting) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; struct usb_alt_interface intf; usbi_dbg("iface %d, setting %d", iface, altsetting); memset(&intf, 0, sizeof(intf)); intf.uai_interface_index = iface; intf.uai_alt_no = altsetting; if (ioctl(dpriv->fd, USB_SET_ALTINTERFACE, &intf) < 0) return _errno_to_libusb(errno); return (LIBUSB_SUCCESS); } int netbsd_clear_halt(struct libusb_device_handle *handle, unsigned char endpoint) { struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv; struct usb_ctl_request req; usbi_dbg(""); req.ucr_request.bmRequestType = UT_WRITE_ENDPOINT; req.ucr_request.bRequest = UR_CLEAR_FEATURE; USETW(req.ucr_request.wValue, UF_ENDPOINT_HALT); USETW(req.ucr_request.wIndex, endpoint); USETW(req.ucr_request.wLength, 0); if (ioctl(dpriv->fd, USB_DO_REQUEST, &req) < 0) return _errno_to_libusb(errno); return (LIBUSB_SUCCESS); } int netbsd_reset_device(struct libusb_device_handle *handle) { usbi_dbg(""); return (LIBUSB_ERROR_NOT_SUPPORTED); } void netbsd_destroy_device(struct libusb_device *dev) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; usbi_dbg(""); free(dpriv->cdesc); } int netbsd_submit_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer; struct handle_priv *hpriv; int err = 0; usbi_dbg(""); transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); hpriv = (struct handle_priv *)transfer->dev_handle->os_priv; switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: err = _sync_control_transfer(itransfer); break; case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: if (IS_XFEROUT(transfer)) { /* Isochronous write is not supported */ err = LIBUSB_ERROR_NOT_SUPPORTED; break; } err = _sync_gen_transfer(itransfer); break; case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: if (IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) { err = LIBUSB_ERROR_NOT_SUPPORTED; break; } err = _sync_gen_transfer(itransfer); break; case LIBUSB_TRANSFER_TYPE_BULK_STREAM: err = LIBUSB_ERROR_NOT_SUPPORTED; break; } if (err) return (err); usbi_signal_transfer_completion(itransfer); return (LIBUSB_SUCCESS); } int netbsd_cancel_transfer(struct usbi_transfer *itransfer) { usbi_dbg(""); return (LIBUSB_ERROR_NOT_SUPPORTED); } void netbsd_clear_transfer_priv(struct usbi_transfer *itransfer) { usbi_dbg(""); /* Nothing to do */ } int netbsd_handle_transfer_completion(struct usbi_transfer *itransfer) { return usbi_handle_transfer_completion(itransfer, LIBUSB_TRANSFER_COMPLETED); } int netbsd_clock_gettime(int clkid, struct timespec *tp) { usbi_dbg("clock %d", clkid); if (clkid == USBI_CLOCK_REALTIME) return clock_gettime(CLOCK_REALTIME, tp); if (clkid == USBI_CLOCK_MONOTONIC) return clock_gettime(CLOCK_MONOTONIC, tp); return (LIBUSB_ERROR_INVALID_PARAM); } int _errno_to_libusb(int err) { switch (err) { case EIO: return (LIBUSB_ERROR_IO); case EACCES: return (LIBUSB_ERROR_ACCESS); case ENOENT: return (LIBUSB_ERROR_NO_DEVICE); case ENOMEM: return (LIBUSB_ERROR_NO_MEM); } usbi_dbg("error: %s", strerror(err)); return (LIBUSB_ERROR_OTHER); } int _cache_active_config_descriptor(struct libusb_device *dev, int fd) { struct device_priv *dpriv = (struct device_priv *)dev->os_priv; struct usb_config_desc ucd; struct usb_full_desc ufd; unsigned char* buf; int len; usbi_dbg("fd %d", fd); ucd.ucd_config_index = USB_CURRENT_CONFIG_INDEX; if ((ioctl(fd, USB_GET_CONFIG_DESC, &ucd)) < 0) return _errno_to_libusb(errno); usbi_dbg("active bLength %d", ucd.ucd_desc.bLength); len = UGETW(ucd.ucd_desc.wTotalLength); buf = malloc(len); if (buf == NULL) return (LIBUSB_ERROR_NO_MEM); ufd.ufd_config_index = ucd.ucd_config_index; ufd.ufd_size = len; ufd.ufd_data = buf; usbi_dbg("index %d, len %d", ufd.ufd_config_index, len); if ((ioctl(fd, USB_GET_FULL_DESC, &ufd)) < 0) { free(buf); return _errno_to_libusb(errno); } if (dpriv->cdesc) free(dpriv->cdesc); dpriv->cdesc = buf; return (0); } int _sync_control_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer; struct libusb_control_setup *setup; struct device_priv *dpriv; struct usb_ctl_request req; transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); dpriv = (struct device_priv *)transfer->dev_handle->dev->os_priv; setup = (struct libusb_control_setup *)transfer->buffer; usbi_dbg("type %d request %d value %d index %d length %d timeout %d", setup->bmRequestType, setup->bRequest, libusb_le16_to_cpu(setup->wValue), libusb_le16_to_cpu(setup->wIndex), libusb_le16_to_cpu(setup->wLength), transfer->timeout); req.ucr_request.bmRequestType = setup->bmRequestType; req.ucr_request.bRequest = setup->bRequest; /* Don't use USETW, libusb already deals with the endianness */ (*(uint16_t *)req.ucr_request.wValue) = setup->wValue; (*(uint16_t *)req.ucr_request.wIndex) = setup->wIndex; (*(uint16_t *)req.ucr_request.wLength) = setup->wLength; req.ucr_data = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0) req.ucr_flags = USBD_SHORT_XFER_OK; if ((ioctl(dpriv->fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0) return _errno_to_libusb(errno); if ((ioctl(dpriv->fd, USB_DO_REQUEST, &req)) < 0) return _errno_to_libusb(errno); itransfer->transferred = req.ucr_actlen; usbi_dbg("transferred %d", itransfer->transferred); return (0); } int _access_endpoint(struct libusb_transfer *transfer) { struct handle_priv *hpriv; struct device_priv *dpriv; char *s, devnode[16]; int fd, endpt; mode_t mode; hpriv = (struct handle_priv *)transfer->dev_handle->os_priv; dpriv = (struct device_priv *)transfer->dev_handle->dev->os_priv; endpt = UE_GET_ADDR(transfer->endpoint); mode = IS_XFERIN(transfer) ? O_RDONLY : O_WRONLY; usbi_dbg("endpoint %d mode %d", endpt, mode); if (hpriv->endpoints[endpt] < 0) { /* Pick the right node given the control one */ strlcpy(devnode, dpriv->devnode, sizeof(devnode)); s = strchr(devnode, '.'); snprintf(s, 4, ".%02d", endpt); /* We may need to read/write to the same endpoint later. */ if (((fd = open(devnode, O_RDWR)) < 0) && (errno == ENXIO)) if ((fd = open(devnode, mode)) < 0) return (-1); hpriv->endpoints[endpt] = fd; } return (hpriv->endpoints[endpt]); } int _sync_gen_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer; int fd, nr = 1; transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); /* * Bulk, Interrupt or Isochronous transfer depends on the * endpoint and thus the node to open. */ if ((fd = _access_endpoint(transfer)) < 0) return _errno_to_libusb(errno); if ((ioctl(fd, USB_SET_TIMEOUT, &transfer->timeout)) < 0) return _errno_to_libusb(errno); if (IS_XFERIN(transfer)) { if ((transfer->flags & LIBUSB_TRANSFER_SHORT_NOT_OK) == 0) if ((ioctl(fd, USB_SET_SHORT_XFER, &nr)) < 0) return _errno_to_libusb(errno); nr = read(fd, transfer->buffer, transfer->length); } else { nr = write(fd, transfer->buffer, transfer->length); } if (nr < 0) return _errno_to_libusb(errno); itransfer->transferred = nr; return (0); } release/libusb/libusb/os/threads_posix.c0000664000000000000000000000425414261476161017414 0ustar rootroot/* * libusb synchronization using POSIX Threads * * Copyright © 2011 Vitali Lovich * Copyright © 2011 Peter Stuge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #if defined(__linux__) || defined(__OpenBSD__) # if defined(__OpenBSD__) # define _BSD_SOURCE # endif # include # include #elif defined(__APPLE__) # include #elif defined(__CYGWIN__) # include #endif #include "threads_posix.h" #include "libusbi.h" int usbi_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timeval *tv) { struct timespec timeout; int r; r = usbi_backend.clock_gettime(USBI_CLOCK_REALTIME, &timeout); if (r < 0) return r; timeout.tv_sec += tv->tv_sec; timeout.tv_nsec += tv->tv_usec * 1000; while (timeout.tv_nsec >= 1000000000L) { timeout.tv_nsec -= 1000000000L; timeout.tv_sec++; } return pthread_cond_timedwait(cond, mutex, &timeout); } int usbi_get_tid(void) { int ret; #if defined(__ANDROID__) ret = gettid(); #elif defined(__linux__) ret = syscall(SYS_gettid); #elif defined(__OpenBSD__) /* The following only works with OpenBSD > 5.1 as it requires real thread support. For 5.1 and earlier, -1 is returned. */ ret = syscall(SYS_getthrid); #elif defined(__APPLE__) ret = (int)pthread_mach_thread_np(pthread_self()); #elif defined(__CYGWIN__) ret = GetCurrentThreadId(); #else ret = -1; #endif /* TODO: NetBSD thread ID support */ return ret; } release/libusb/libusb/os/linux_netlink.c0000664000000000000000000002417114261476161017423 0ustar rootroot/* -*- Mode: C; c-basic-offset:8 ; indent-tabs-mode:t -*- */ /* * Linux usbfs backend for libusb * Copyright (C) 2007-2009 Daniel Drake * Copyright (c) 2001 Johannes Erdfelt * Copyright (c) 2013 Nathan Hjelm * Copyright (c) 2016 Chris Dickens * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_ASM_TYPES_H #include #endif #include #include #include "libusbi.h" #include "linux_usbfs.h" #define NL_GROUP_KERNEL 1 #ifndef SOCK_CLOEXEC #define SOCK_CLOEXEC 0 #endif #ifndef SOCK_NONBLOCK #define SOCK_NONBLOCK 0 #endif static int linux_netlink_socket = -1; static int netlink_control_pipe[2] = { -1, -1 }; static pthread_t libusb_linux_event_thread; static void *linux_netlink_event_thread_main(void *arg); static int set_fd_cloexec_nb(int fd, int socktype) { int flags; #if defined(FD_CLOEXEC) /* Make sure the netlink socket file descriptor is marked as CLOEXEC */ if (!(socktype & SOCK_CLOEXEC)) { flags = fcntl(fd, F_GETFD); if (flags == -1) { usbi_err(NULL, "failed to get netlink fd flags (%d)", errno); return -1; } if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1) { usbi_err(NULL, "failed to set netlink fd flags (%d)", errno); return -1; } } #endif /* Make sure the netlink socket is non-blocking */ if (!(socktype & SOCK_NONBLOCK)) { flags = fcntl(fd, F_GETFL); if (flags == -1) { usbi_err(NULL, "failed to get netlink fd status flags (%d)", errno); return -1; } if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) { usbi_err(NULL, "failed to set netlink fd status flags (%d)", errno); return -1; } } return 0; } int linux_netlink_start_event_monitor(void) { struct sockaddr_nl sa_nl = { .nl_family = AF_NETLINK, .nl_groups = NL_GROUP_KERNEL }; int socktype = SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC; int opt = 1; int ret; linux_netlink_socket = socket(PF_NETLINK, socktype, NETLINK_KOBJECT_UEVENT); if (linux_netlink_socket == -1 && errno == EINVAL) { usbi_dbg("failed to create netlink socket of type %d, attempting SOCK_RAW", socktype); socktype = SOCK_RAW; linux_netlink_socket = socket(PF_NETLINK, socktype, NETLINK_KOBJECT_UEVENT); } if (linux_netlink_socket == -1) { usbi_err(NULL, "failed to create netlink socket (%d)", errno); goto err; } ret = set_fd_cloexec_nb(linux_netlink_socket, socktype); if (ret == -1) goto err_close_socket; ret = bind(linux_netlink_socket, (struct sockaddr *)&sa_nl, sizeof(sa_nl)); if (ret == -1) { usbi_err(NULL, "failed to bind netlink socket (%d)", errno); goto err_close_socket; } ret = setsockopt(linux_netlink_socket, SOL_SOCKET, SO_PASSCRED, &opt, sizeof(opt)); if (ret == -1) { usbi_err(NULL, "failed to set netlink socket SO_PASSCRED option (%d)", errno); goto err_close_socket; } ret = usbi_pipe(netlink_control_pipe); if (ret) { usbi_err(NULL, "failed to create netlink control pipe"); goto err_close_socket; } ret = pthread_create(&libusb_linux_event_thread, NULL, linux_netlink_event_thread_main, NULL); if (ret != 0) { usbi_err(NULL, "failed to create netlink event thread (%d)", ret); goto err_close_pipe; } return LIBUSB_SUCCESS; err_close_pipe: close(netlink_control_pipe[0]); close(netlink_control_pipe[1]); netlink_control_pipe[0] = -1; netlink_control_pipe[1] = -1; err_close_socket: close(linux_netlink_socket); linux_netlink_socket = -1; err: return LIBUSB_ERROR_OTHER; } int linux_netlink_stop_event_monitor(void) { char dummy = 1; ssize_t r; assert(linux_netlink_socket != -1); /* Write some dummy data to the control pipe and * wait for the thread to exit */ r = write(netlink_control_pipe[1], &dummy, sizeof(dummy)); if (r <= 0) usbi_warn(NULL, "netlink control pipe signal failed"); pthread_join(libusb_linux_event_thread, NULL); close(linux_netlink_socket); linux_netlink_socket = -1; /* close and reset control pipe */ close(netlink_control_pipe[0]); close(netlink_control_pipe[1]); netlink_control_pipe[0] = -1; netlink_control_pipe[1] = -1; return LIBUSB_SUCCESS; } static const char *netlink_message_parse(const char *buffer, size_t len, const char *key) { const char *end = buffer + len; size_t keylen = strlen(key); while (buffer < end && *buffer) { if (strncmp(buffer, key, keylen) == 0 && buffer[keylen] == '=') return buffer + keylen + 1; buffer += strlen(buffer) + 1; } return NULL; } /* parse parts of netlink message common to both libudev and the kernel */ static int linux_netlink_parse(const char *buffer, size_t len, int *detached, const char **sys_name, uint8_t *busnum, uint8_t *devaddr) { const char *tmp, *slash; errno = 0; *sys_name = NULL; *detached = 0; *busnum = 0; *devaddr = 0; tmp = netlink_message_parse(buffer, len, "ACTION"); if (!tmp) { return -1; } else if (strcmp(tmp, "remove") == 0) { *detached = 1; } else if (strcmp(tmp, "add") != 0) { usbi_dbg("unknown device action %s", tmp); return -1; } /* check that this is a usb message */ tmp = netlink_message_parse(buffer, len, "SUBSYSTEM"); if (!tmp || strcmp(tmp, "usb") != 0) { /* not usb. ignore */ return -1; } /* check that this is an actual usb device */ tmp = netlink_message_parse(buffer, len, "DEVTYPE"); if (!tmp || strcmp(tmp, "usb_device") != 0) { /* not usb. ignore */ return -1; } tmp = netlink_message_parse(buffer, len, "BUSNUM"); if (tmp) { *busnum = (uint8_t)(strtoul(tmp, NULL, 10) & 0xff); if (errno) { errno = 0; return -1; } tmp = netlink_message_parse(buffer, len, "DEVNUM"); if (NULL == tmp) return -1; *devaddr = (uint8_t)(strtoul(tmp, NULL, 10) & 0xff); if (errno) { errno = 0; return -1; } } else { /* no bus number. try "DEVICE" */ tmp = netlink_message_parse(buffer, len, "DEVICE"); if (!tmp) { /* not usb. ignore */ return -1; } /* Parse a device path such as /dev/bus/usb/003/004 */ slash = strrchr(tmp, '/'); if (!slash) return -1; *busnum = (uint8_t)(strtoul(slash - 3, NULL, 10) & 0xff); if (errno) { errno = 0; return -1; } *devaddr = (uint8_t)(strtoul(slash + 1, NULL, 10) & 0xff); if (errno) { errno = 0; return -1; } return 0; } tmp = netlink_message_parse(buffer, len, "DEVPATH"); if (!tmp) return -1; slash = strrchr(tmp, '/'); if (slash) *sys_name = slash + 1; /* found a usb device */ return 0; } static int linux_netlink_read_message(void) { char cred_buffer[CMSG_SPACE(sizeof(struct ucred))]; char msg_buffer[2048]; const char *sys_name = NULL; uint8_t busnum, devaddr; int detached, r; ssize_t len; struct cmsghdr *cmsg; struct ucred *cred; struct sockaddr_nl sa_nl; struct iovec iov = { .iov_base = msg_buffer, .iov_len = sizeof(msg_buffer) }; struct msghdr msg = { .msg_iov = &iov, .msg_iovlen = 1, .msg_control = cred_buffer, .msg_controllen = sizeof(cred_buffer), .msg_name = &sa_nl, .msg_namelen = sizeof(sa_nl) }; /* read netlink message */ len = recvmsg(linux_netlink_socket, &msg, 0); if (len == -1) { if (errno != EAGAIN && errno != EINTR) usbi_err(NULL, "error receiving message from netlink (%d)", errno); return -1; } if (len < 32 || (msg.msg_flags & MSG_TRUNC)) { usbi_err(NULL, "invalid netlink message length"); return -1; } if (sa_nl.nl_groups != NL_GROUP_KERNEL || sa_nl.nl_pid != 0) { usbi_dbg("ignoring netlink message from unknown group/PID (%u/%u)", (unsigned int)sa_nl.nl_groups, (unsigned int)sa_nl.nl_pid); return -1; } cmsg = CMSG_FIRSTHDR(&msg); if (!cmsg || cmsg->cmsg_type != SCM_CREDENTIALS) { usbi_dbg("ignoring netlink message with no sender credentials"); return -1; } cred = (struct ucred *)CMSG_DATA(cmsg); if (cred->uid != 0) { usbi_dbg("ignoring netlink message with non-zero sender UID %u", (unsigned int)cred->uid); return -1; } r = linux_netlink_parse(msg_buffer, (size_t)len, &detached, &sys_name, &busnum, &devaddr); if (r) return r; usbi_dbg("netlink hotplug found device busnum: %hhu, devaddr: %hhu, sys_name: %s, removed: %s", busnum, devaddr, sys_name, detached ? "yes" : "no"); /* signal device is available (or not) to all contexts */ if (detached) linux_device_disconnected(busnum, devaddr); else linux_hotplug_enumerate(busnum, devaddr, sys_name); return 0; } static void *linux_netlink_event_thread_main(void *arg) { char dummy; int r; ssize_t nb; struct pollfd fds[] = { { .fd = netlink_control_pipe[0], .events = POLLIN }, { .fd = linux_netlink_socket, .events = POLLIN }, }; UNUSED(arg); usbi_dbg("netlink event thread entering"); while ((r = poll(fds, 2, -1)) >= 0 || errno == EINTR) { if (r < 0) { /* temporary failure */ continue; } if (fds[0].revents & POLLIN) { /* activity on control pipe, read the byte and exit */ nb = read(netlink_control_pipe[0], &dummy, sizeof(dummy)); if (nb <= 0) usbi_warn(NULL, "netlink control pipe read failed"); break; } if (fds[1].revents & POLLIN) { usbi_mutex_static_lock(&linux_hotplug_lock); linux_netlink_read_message(); usbi_mutex_static_unlock(&linux_hotplug_lock); } } usbi_dbg("netlink event thread exiting"); return NULL; } void linux_netlink_hotplug_poll(void) { int r; usbi_mutex_static_lock(&linux_hotplug_lock); do { r = linux_netlink_read_message(); } while (r == 0); usbi_mutex_static_unlock(&linux_hotplug_lock); } release/libusb/libusb/os/darwin_usb.c0000664000000000000000000023006014261476161016671 0ustar rootroot/* -*- Mode: C; indent-tabs-mode:nil -*- */ /* * darwin backend for libusb 1.0 * Copyright © 2008-2017 Nathan Hjelm * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Suppress warnings about the use of the deprecated objc_registerThreadWithCollector * function. Its use is also conditionalized to only older deployment targets. */ #define OBJC_SILENCE_GC_DEPRECATIONS 1 #include #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200 #include #endif #if MAC_OS_X_VERSION_MIN_REQUIRED >= 101200 /* Apple deprecated the darwin atomics in 10.12 in favor of C11 atomics */ #include #define libusb_darwin_atomic_fetch_add(x, y) atomic_fetch_add(x, y) _Atomic int32_t initCount = ATOMIC_VAR_INIT(0); #else /* use darwin atomics if the target is older than 10.12 */ #include /* OSAtomicAdd32Barrier returns the new value */ #define libusb_darwin_atomic_fetch_add(x, y) (OSAtomicAdd32Barrier(y, x) - y) static volatile int32_t initCount = 0; #endif /* On 10.12 and later, use newly available clock_*() functions */ #if MAC_OS_X_VERSION_MIN_REQUIRED >= 101200 #define OSX_USE_CLOCK_GETTIME 1 #else #define OSX_USE_CLOCK_GETTIME 0 #endif #include "darwin_usb.h" /* async event thread */ static pthread_mutex_t libusb_darwin_at_mutex = PTHREAD_MUTEX_INITIALIZER; static pthread_cond_t libusb_darwin_at_cond = PTHREAD_COND_INITIALIZER; static pthread_once_t darwin_init_once = PTHREAD_ONCE_INIT; #if !OSX_USE_CLOCK_GETTIME static clock_serv_t clock_realtime; static clock_serv_t clock_monotonic; #endif static CFRunLoopRef libusb_darwin_acfl = NULL; /* event cf loop */ static CFRunLoopSourceRef libusb_darwin_acfls = NULL; /* shutdown signal for event cf loop */ static usbi_mutex_t darwin_cached_devices_lock = PTHREAD_MUTEX_INITIALIZER; static struct list_head darwin_cached_devices = {&darwin_cached_devices, &darwin_cached_devices}; static const char *darwin_device_class = kIOUSBDeviceClassName; #define DARWIN_CACHED_DEVICE(a) ((struct darwin_cached_device *) (((struct darwin_device_priv *)((a)->os_priv))->dev)) /* async event thread */ static pthread_t libusb_darwin_at; static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian); static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface); static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface); static int darwin_reset_device(struct libusb_device_handle *dev_handle); static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0); static int darwin_scan_devices(struct libusb_context *ctx); static int process_new_device (struct libusb_context *ctx, io_service_t service); #if defined(ENABLE_LOGGING) static const char *darwin_error_str (int result) { static char string_buffer[50]; switch (result) { case kIOReturnSuccess: return "no error"; case kIOReturnNotOpen: return "device not opened for exclusive access"; case kIOReturnNoDevice: return "no connection to an IOService"; case kIOUSBNoAsyncPortErr: return "no async port has been opened for interface"; case kIOReturnExclusiveAccess: return "another process has device opened for exclusive access"; case kIOUSBPipeStalled: return "pipe is stalled"; case kIOReturnError: return "could not establish a connection to the Darwin kernel"; case kIOUSBTransactionTimeout: return "transaction timed out"; case kIOReturnBadArgument: return "invalid argument"; case kIOReturnAborted: return "transaction aborted"; case kIOReturnNotResponding: return "device not responding"; case kIOReturnOverrun: return "data overrun"; case kIOReturnCannotWire: return "physical memory can not be wired down"; case kIOReturnNoResources: return "out of resources"; case kIOUSBHighSpeedSplitError: return "high speed split error"; default: snprintf(string_buffer, sizeof(string_buffer), "unknown error (0x%x)", result); return string_buffer; } } #endif static int darwin_to_libusb (int result) { switch (result) { case kIOReturnUnderrun: case kIOReturnSuccess: return LIBUSB_SUCCESS; case kIOReturnNotOpen: case kIOReturnNoDevice: return LIBUSB_ERROR_NO_DEVICE; case kIOReturnExclusiveAccess: return LIBUSB_ERROR_ACCESS; case kIOUSBPipeStalled: return LIBUSB_ERROR_PIPE; case kIOReturnBadArgument: return LIBUSB_ERROR_INVALID_PARAM; case kIOUSBTransactionTimeout: return LIBUSB_ERROR_TIMEOUT; case kIOReturnNotResponding: case kIOReturnAborted: case kIOReturnError: case kIOUSBNoAsyncPortErr: default: return LIBUSB_ERROR_OTHER; } } /* this function must be called with the darwin_cached_devices_lock held */ static void darwin_deref_cached_device(struct darwin_cached_device *cached_dev) { cached_dev->refcount--; /* free the device and remove it from the cache */ if (0 == cached_dev->refcount) { list_del(&cached_dev->list); (*(cached_dev->device))->Release(cached_dev->device); free (cached_dev); } } static void darwin_ref_cached_device(struct darwin_cached_device *cached_dev) { cached_dev->refcount++; } static int ep_to_pipeRef(struct libusb_device_handle *dev_handle, uint8_t ep, uint8_t *pipep, uint8_t *ifcp, struct darwin_interface **interface_out) { struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; /* current interface */ struct darwin_interface *cInterface; int8_t i, iface; usbi_dbg ("converting ep address 0x%02x to pipeRef and interface", ep); for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) { cInterface = &priv->interfaces[iface]; if (dev_handle->claimed_interfaces & (1 << iface)) { for (i = 0 ; i < cInterface->num_endpoints ; i++) { if (cInterface->endpoint_addrs[i] == ep) { *pipep = i + 1; if (ifcp) *ifcp = iface; if (interface_out) *interface_out = cInterface; usbi_dbg ("pipe %d on interface %d matches", *pipep, iface); return 0; } } } } /* No pipe found with the correct endpoint address */ usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep); return LIBUSB_ERROR_NOT_FOUND; } static int usb_setup_device_iterator (io_iterator_t *deviceIterator, UInt32 location) { CFMutableDictionaryRef matchingDict = IOServiceMatching(darwin_device_class); if (!matchingDict) return kIOReturnError; if (location) { CFMutableDictionaryRef propertyMatchDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); /* there are no unsigned CFNumber types so treat the value as signed. the OS seems to do this internally (CFNumberType of locationID is kCFNumberSInt32Type) */ CFTypeRef locationCF = CFNumberCreate (NULL, kCFNumberSInt32Type, &location); if (propertyMatchDict && locationCF) { CFDictionarySetValue (propertyMatchDict, CFSTR(kUSBDevicePropertyLocationID), locationCF); CFDictionarySetValue (matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict); } /* else we can still proceed as long as the caller accounts for the possibility of other devices in the iterator */ /* release our references as per the Create Rule */ if (propertyMatchDict) CFRelease (propertyMatchDict); if (locationCF) CFRelease (locationCF); } return IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, deviceIterator); } /* Returns 1 on success, 0 on failure. */ static int get_ioregistry_value_number (io_service_t service, CFStringRef property, CFNumberType type, void *p) { CFTypeRef cfNumber = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0); int ret = 0; if (cfNumber) { if (CFGetTypeID(cfNumber) == CFNumberGetTypeID()) { ret = CFNumberGetValue(cfNumber, type, p); } CFRelease (cfNumber); } return ret; } static int get_ioregistry_value_data (io_service_t service, CFStringRef property, ssize_t size, void *p) { CFTypeRef cfData = IORegistryEntryCreateCFProperty (service, property, kCFAllocatorDefault, 0); int ret = 0; if (cfData) { if (CFGetTypeID (cfData) == CFDataGetTypeID ()) { CFIndex length = CFDataGetLength (cfData); if (length < size) { size = length; } CFDataGetBytes (cfData, CFRangeMake(0, size), p); ret = 1; } CFRelease (cfData); } return ret; } static usb_device_t **darwin_device_from_service (io_service_t service) { io_cf_plugin_ref_t *plugInInterface = NULL; usb_device_t **device; kern_return_t result; SInt32 score; result = IOCreatePlugInInterfaceForService(service, kIOUSBDeviceUserClientTypeID, kIOCFPlugInInterfaceID, &plugInInterface, &score); if (kIOReturnSuccess != result || !plugInInterface) { usbi_dbg ("could not set up plugin for service: %s", darwin_error_str (result)); return NULL; } (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID), (LPVOID)&device); /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */ (*plugInInterface)->Release (plugInInterface); return device; } static void darwin_devices_attached (void *ptr, io_iterator_t add_devices) { UNUSED(ptr); struct libusb_context *ctx; io_service_t service; usbi_mutex_lock(&active_contexts_lock); while ((service = IOIteratorNext(add_devices))) { /* add this device to each active context's device list */ list_for_each_entry(ctx, &active_contexts_list, list, struct libusb_context) { process_new_device (ctx, service); } IOObjectRelease(service); } usbi_mutex_unlock(&active_contexts_lock); } static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) { UNUSED(ptr); struct libusb_device *dev = NULL; struct libusb_context *ctx; struct darwin_cached_device *old_device; io_service_t device; UInt64 session; int ret; usbi_mutex_lock(&active_contexts_lock); while ((device = IOIteratorNext (rem_devices)) != 0) { /* get the location from the i/o registry */ ret = get_ioregistry_value_number (device, CFSTR("sessionID"), kCFNumberSInt64Type, &session); IOObjectRelease (device); if (!ret) continue; /* we need to match darwin_ref_cached_device call made in darwin_get_cached_device function otherwise no cached device will ever get freed */ usbi_mutex_lock(&darwin_cached_devices_lock); list_for_each_entry(old_device, &darwin_cached_devices, list, struct darwin_cached_device) { if (old_device->session == session) { darwin_deref_cached_device (old_device); break; } } usbi_mutex_unlock(&darwin_cached_devices_lock); list_for_each_entry(ctx, &active_contexts_list, list, struct libusb_context) { usbi_dbg ("notifying context %p of device disconnect", ctx); dev = usbi_get_device_by_session_id(ctx, (unsigned long) session); if (dev) { /* signal the core that this device has been disconnected. the core will tear down this device when the reference count reaches 0 */ usbi_disconnect_device(dev); libusb_unref_device(dev); } } } usbi_mutex_unlock(&active_contexts_lock); } static void darwin_hotplug_poll (void) { /* not sure if 5 seconds will be too long/short but it should work ok */ mach_timespec_t timeout = {.tv_sec = 5, .tv_nsec = 0}; /* since a kernel thread may nodify the IOInterators used for * hotplug notidication we can't just clear the iterators. * instead just wait until all IOService providers are quiet */ (void) IOKitWaitQuiet (kIOMasterPortDefault, &timeout); } static void darwin_clear_iterator (io_iterator_t iter) { io_service_t device; while ((device = IOIteratorNext (iter)) != 0) IOObjectRelease (device); } static void *darwin_event_thread_main (void *arg0) { IOReturn kresult; struct libusb_context *ctx = (struct libusb_context *)arg0; CFRunLoopRef runloop; #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 /* Set this thread's name, so it can be seen in the debugger and crash reports. */ pthread_setname_np ("org.libusb.device-hotplug"); #endif #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1060 && MAC_OS_X_VERSION_MIN_REQUIRED < 101200 /* Tell the Objective-C garbage collector about this thread. This is required because, unlike NSThreads, pthreads are not automatically registered. Although we don't use Objective-C, we use CoreFoundation, which does. Garbage collection support was entirely removed in 10.12, so don't bother there. */ objc_registerThreadWithCollector(); #endif /* hotplug (device arrival/removal) sources */ CFRunLoopSourceContext libusb_shutdown_cfsourcectx; CFRunLoopSourceRef libusb_notification_cfsource; io_notification_port_t libusb_notification_port; io_iterator_t libusb_rem_device_iterator; io_iterator_t libusb_add_device_iterator; usbi_dbg ("creating hotplug event source"); runloop = CFRunLoopGetCurrent (); CFRetain (runloop); /* add the shutdown cfsource to the run loop */ memset(&libusb_shutdown_cfsourcectx, 0, sizeof(libusb_shutdown_cfsourcectx)); libusb_shutdown_cfsourcectx.info = runloop; libusb_shutdown_cfsourcectx.perform = (void (*)(void *))CFRunLoopStop; libusb_darwin_acfls = CFRunLoopSourceCreate(NULL, 0, &libusb_shutdown_cfsourcectx); CFRunLoopAddSource(runloop, libusb_darwin_acfls, kCFRunLoopDefaultMode); /* add the notification port to the run loop */ libusb_notification_port = IONotificationPortCreate (kIOMasterPortDefault); libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port); CFRunLoopAddSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode); /* create notifications for removed devices */ kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification, IOServiceMatching(darwin_device_class), darwin_devices_detached, ctx, &libusb_rem_device_iterator); if (kresult != kIOReturnSuccess) { usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult)); pthread_exit (NULL); } /* create notifications for attached devices */ kresult = IOServiceAddMatchingNotification(libusb_notification_port, kIOFirstMatchNotification, IOServiceMatching(darwin_device_class), darwin_devices_attached, ctx, &libusb_add_device_iterator); if (kresult != kIOReturnSuccess) { usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult)); pthread_exit (NULL); } /* arm notifiers */ darwin_clear_iterator (libusb_rem_device_iterator); darwin_clear_iterator (libusb_add_device_iterator); usbi_dbg ("darwin event thread ready to receive events"); /* signal the main thread that the hotplug runloop has been created. */ pthread_mutex_lock (&libusb_darwin_at_mutex); libusb_darwin_acfl = runloop; pthread_cond_signal (&libusb_darwin_at_cond); pthread_mutex_unlock (&libusb_darwin_at_mutex); /* run the runloop */ CFRunLoopRun(); usbi_dbg ("darwin event thread exiting"); /* remove the notification cfsource */ CFRunLoopRemoveSource(runloop, libusb_notification_cfsource, kCFRunLoopDefaultMode); /* remove the shutdown cfsource */ CFRunLoopRemoveSource(runloop, libusb_darwin_acfls, kCFRunLoopDefaultMode); /* delete notification port */ IONotificationPortDestroy (libusb_notification_port); /* delete iterators */ IOObjectRelease (libusb_rem_device_iterator); IOObjectRelease (libusb_add_device_iterator); CFRelease (libusb_darwin_acfls); CFRelease (runloop); libusb_darwin_acfls = NULL; libusb_darwin_acfl = NULL; pthread_exit (NULL); } /* cleanup function to destroy cached devices */ static void __attribute__((destructor)) _darwin_finalize(void) { struct darwin_cached_device *dev, *next; usbi_mutex_lock(&darwin_cached_devices_lock); list_for_each_entry_safe(dev, next, &darwin_cached_devices, list, struct darwin_cached_device) { darwin_deref_cached_device(dev); } usbi_mutex_unlock(&darwin_cached_devices_lock); } static void darwin_check_version (void) { /* adjust for changes in the USB stack in xnu 15 */ int sysctl_args[] = {CTL_KERN, KERN_OSRELEASE}; long version; char version_string[256] = {'\0',}; size_t length = 256; sysctl(sysctl_args, 2, version_string, &length, NULL, 0); errno = 0; version = strtol (version_string, NULL, 10); if (0 == errno && version >= 15) { darwin_device_class = "IOUSBHostDevice"; } } static int darwin_init(struct libusb_context *ctx) { int rc; rc = pthread_once (&darwin_init_once, darwin_check_version); if (rc) { return LIBUSB_ERROR_OTHER; } rc = darwin_scan_devices (ctx); if (LIBUSB_SUCCESS != rc) { return rc; } if (libusb_darwin_atomic_fetch_add (&initCount, 1) == 0) { #if !OSX_USE_CLOCK_GETTIME /* create the clocks that will be used if clock_gettime() is not available */ host_name_port_t host_self; host_self = mach_host_self(); host_get_clock_service(host_self, CALENDAR_CLOCK, &clock_realtime); host_get_clock_service(host_self, SYSTEM_CLOCK, &clock_monotonic); mach_port_deallocate(mach_task_self(), host_self); #endif pthread_create (&libusb_darwin_at, NULL, darwin_event_thread_main, ctx); pthread_mutex_lock (&libusb_darwin_at_mutex); while (!libusb_darwin_acfl) pthread_cond_wait (&libusb_darwin_at_cond, &libusb_darwin_at_mutex); pthread_mutex_unlock (&libusb_darwin_at_mutex); } return rc; } static void darwin_exit (struct libusb_context *ctx) { UNUSED(ctx); if (libusb_darwin_atomic_fetch_add (&initCount, -1) == 1) { #if !OSX_USE_CLOCK_GETTIME mach_port_deallocate(mach_task_self(), clock_realtime); mach_port_deallocate(mach_task_self(), clock_monotonic); #endif /* stop the event runloop and wait for the thread to terminate. */ CFRunLoopSourceSignal(libusb_darwin_acfls); CFRunLoopWakeUp (libusb_darwin_acfl); pthread_join (libusb_darwin_at, NULL); } } static int darwin_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) { struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev); /* return cached copy */ memmove (buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH); *host_endian = 0; return 0; } static int get_configuration_index (struct libusb_device *dev, int config_value) { struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev); UInt8 i, numConfig; IOUSBConfigurationDescriptorPtr desc; IOReturn kresult; /* is there a simpler way to determine the index? */ kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig); if (kresult != kIOReturnSuccess) return darwin_to_libusb (kresult); for (i = 0 ; i < numConfig ; i++) { (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc); if (desc->bConfigurationValue == config_value) return i; } /* configuration not found */ return LIBUSB_ERROR_NOT_FOUND; } static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) { struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev); int config_index; if (0 == priv->active_config) return LIBUSB_ERROR_NOT_FOUND; config_index = get_configuration_index (dev, priv->active_config); if (config_index < 0) return config_index; return darwin_get_config_descriptor (dev, config_index, buffer, len, host_endian); } static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) { struct darwin_cached_device *priv = DARWIN_CACHED_DEVICE(dev); IOUSBConfigurationDescriptorPtr desc; IOReturn kresult; int ret; if (!priv || !priv->device) return LIBUSB_ERROR_OTHER; kresult = (*priv->device)->GetConfigurationDescriptorPtr (priv->device, config_index, &desc); if (kresult == kIOReturnSuccess) { /* copy descriptor */ if (libusb_le16_to_cpu(desc->wTotalLength) < len) len = libusb_le16_to_cpu(desc->wTotalLength); memmove (buffer, desc, len); /* GetConfigurationDescriptorPtr returns the descriptor in USB bus order */ *host_endian = 0; } ret = darwin_to_libusb (kresult); if (ret != LIBUSB_SUCCESS) return ret; return (int) len; } /* check whether the os has configured the device */ static int darwin_check_configuration (struct libusb_context *ctx, struct darwin_cached_device *dev) { usb_device_t **darwin_device = dev->device; IOUSBConfigurationDescriptorPtr configDesc; IOUSBFindInterfaceRequest request; kern_return_t kresult; io_iterator_t interface_iterator; io_service_t firstInterface; if (dev->dev_descriptor.bNumConfigurations < 1) { usbi_err (ctx, "device has no configurations"); return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */ } /* checking the configuration of a root hub simulation takes ~1 s in 10.11. the device is not usable anyway */ if (0x05ac == dev->dev_descriptor.idVendor && 0x8005 == dev->dev_descriptor.idProduct) { usbi_dbg ("ignoring configuration on root hub simulation"); dev->active_config = 0; return 0; } /* find the first configuration */ kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc); dev->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1; /* check if the device is already configured. there is probably a better way than iterating over the to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices might lock up on the device request) */ /* Setup the Interface Request */ request.bInterfaceClass = kIOUSBFindInterfaceDontCare; request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare; request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare; request.bAlternateSetting = kIOUSBFindInterfaceDontCare; kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator); if (kresult) return darwin_to_libusb (kresult); /* iterate once */ firstInterface = IOIteratorNext(interface_iterator); /* done with the interface iterator */ IOObjectRelease(interface_iterator); if (firstInterface) { IOObjectRelease (firstInterface); /* device is configured */ if (dev->dev_descriptor.bNumConfigurations == 1) /* to avoid problems with some devices get the configurations value from the configuration descriptor */ dev->active_config = dev->first_config; else /* devices with more than one configuration should work with GetConfiguration */ (*darwin_device)->GetConfiguration (darwin_device, &dev->active_config); } else /* not configured */ dev->active_config = 0; usbi_dbg ("active config: %u, first config: %u", dev->active_config, dev->first_config); return 0; } static int darwin_request_descriptor (usb_device_t **device, UInt8 desc, UInt8 desc_index, void *buffer, size_t buffer_size) { IOUSBDevRequestTO req; memset (buffer, 0, buffer_size); /* Set up request for descriptor/ */ req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice); req.bRequest = kUSBRqGetDescriptor; req.wValue = desc << 8; req.wIndex = desc_index; req.wLength = buffer_size; req.pData = buffer; req.noDataTimeout = 20; req.completionTimeout = 100; return (*device)->DeviceRequestTO (device, &req); } static int darwin_cache_device_descriptor (struct libusb_context *ctx, struct darwin_cached_device *dev) { usb_device_t **device = dev->device; int retries = 1, delay = 30000; int unsuspended = 0, try_unsuspend = 1, try_reconfigure = 1; int is_open = 0; int ret = 0, ret2; UInt8 bDeviceClass; UInt16 idProduct, idVendor; dev->can_enumerate = 0; (*device)->GetDeviceClass (device, &bDeviceClass); (*device)->GetDeviceProduct (device, &idProduct); (*device)->GetDeviceVendor (device, &idVendor); /* According to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request. Still, * to follow the spec as closely as possible, try opening the device */ is_open = ((*device)->USBDeviceOpenSeize(device) == kIOReturnSuccess); do { /**** retrieve device descriptor ****/ ret = darwin_request_descriptor (device, kUSBDeviceDesc, 0, &dev->dev_descriptor, sizeof(dev->dev_descriptor)); if (kIOReturnOverrun == ret && kUSBDeviceDesc == dev->dev_descriptor.bDescriptorType) /* received an overrun error but we still received a device descriptor */ ret = kIOReturnSuccess; if (kIOUSBVendorIDAppleComputer == idVendor) { /* NTH: don't bother retrying or unsuspending Apple devices */ break; } if (kIOReturnSuccess == ret && (0 == dev->dev_descriptor.bNumConfigurations || 0 == dev->dev_descriptor.bcdUSB)) { /* work around for incorrectly configured devices */ if (try_reconfigure && is_open) { usbi_dbg("descriptor appears to be invalid. resetting configuration before trying again..."); /* set the first configuration */ (*device)->SetConfiguration(device, 1); /* don't try to reconfigure again */ try_reconfigure = 0; } ret = kIOUSBPipeStalled; } if (kIOReturnSuccess != ret && is_open && try_unsuspend) { /* device may be suspended. unsuspend it and try again */ #if DeviceVersion >= 320 UInt32 info = 0; /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */ (void)(*device)->GetUSBDeviceInformation (device, &info); /* note that the device was suspended */ if (info & (1 << kUSBInformationDeviceIsSuspendedBit) || 0 == info) try_unsuspend = 1; #endif if (try_unsuspend) { /* try to unsuspend the device */ ret2 = (*device)->USBDeviceSuspend (device, 0); if (kIOReturnSuccess != ret2) { /* prevent log spew from poorly behaving devices. this indicates the os actually had trouble communicating with the device */ usbi_dbg("could not retrieve device descriptor. failed to unsuspend: %s",darwin_error_str(ret2)); } else unsuspended = 1; try_unsuspend = 0; } } if (kIOReturnSuccess != ret) { usbi_dbg("kernel responded with code: 0x%08x. sleeping for %d ms before trying again", ret, delay/1000); /* sleep for a little while before trying again */ nanosleep(&(struct timespec){delay / 1000000, (delay * 1000) % 1000000000UL}, NULL); } } while (kIOReturnSuccess != ret && retries--); if (unsuspended) /* resuspend the device */ (void)(*device)->USBDeviceSuspend (device, 1); if (is_open) (void) (*device)->USBDeviceClose (device); if (ret != kIOReturnSuccess) { /* a debug message was already printed out for this error */ if (LIBUSB_CLASS_HUB == bDeviceClass) usbi_dbg ("could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device", idVendor, idProduct, darwin_error_str (ret), ret); else usbi_warn (ctx, "could not retrieve device descriptor %.4x:%.4x: %s (%x). skipping device", idVendor, idProduct, darwin_error_str (ret), ret); return darwin_to_libusb (ret); } /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */ if (libusb_le16_to_cpu (dev->dev_descriptor.idProduct) != idProduct) { /* not a valid device */ usbi_warn (ctx, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device", idProduct, libusb_le16_to_cpu (dev->dev_descriptor.idProduct)); return LIBUSB_ERROR_NO_DEVICE; } usbi_dbg ("cached device descriptor:"); usbi_dbg (" bDescriptorType: 0x%02x", dev->dev_descriptor.bDescriptorType); usbi_dbg (" bcdUSB: 0x%04x", dev->dev_descriptor.bcdUSB); usbi_dbg (" bDeviceClass: 0x%02x", dev->dev_descriptor.bDeviceClass); usbi_dbg (" bDeviceSubClass: 0x%02x", dev->dev_descriptor.bDeviceSubClass); usbi_dbg (" bDeviceProtocol: 0x%02x", dev->dev_descriptor.bDeviceProtocol); usbi_dbg (" bMaxPacketSize0: 0x%02x", dev->dev_descriptor.bMaxPacketSize0); usbi_dbg (" idVendor: 0x%04x", dev->dev_descriptor.idVendor); usbi_dbg (" idProduct: 0x%04x", dev->dev_descriptor.idProduct); usbi_dbg (" bcdDevice: 0x%04x", dev->dev_descriptor.bcdDevice); usbi_dbg (" iManufacturer: 0x%02x", dev->dev_descriptor.iManufacturer); usbi_dbg (" iProduct: 0x%02x", dev->dev_descriptor.iProduct); usbi_dbg (" iSerialNumber: 0x%02x", dev->dev_descriptor.iSerialNumber); usbi_dbg (" bNumConfigurations: 0x%02x", dev->dev_descriptor.bNumConfigurations); dev->can_enumerate = 1; return LIBUSB_SUCCESS; } static int get_device_port (io_service_t service, UInt8 *port) { kern_return_t result; io_service_t parent; int ret = 0; if (get_ioregistry_value_number (service, CFSTR("PortNum"), kCFNumberSInt8Type, port)) { return 1; } result = IORegistryEntryGetParentEntry (service, kIOServicePlane, &parent); if (kIOReturnSuccess == result) { ret = get_ioregistry_value_data (parent, CFSTR("port"), 1, port); IOObjectRelease (parent); } return ret; } static int get_device_parent_sessionID(io_service_t service, UInt64 *parent_sessionID) { kern_return_t result; io_service_t parent; /* Walk up the tree in the IOService plane until we find a parent that has a sessionID */ parent = service; while((result = IORegistryEntryGetParentEntry (parent, kIOServicePlane, &parent)) == kIOReturnSuccess) { if (get_ioregistry_value_number (parent, CFSTR("sessionID"), kCFNumberSInt64Type, parent_sessionID)) { /* Success */ return 1; } } /* We ran out of parents */ return 0; } static int darwin_get_cached_device(struct libusb_context *ctx, io_service_t service, struct darwin_cached_device **cached_out) { struct darwin_cached_device *new_device; UInt64 sessionID = 0, parent_sessionID = 0; int ret = LIBUSB_SUCCESS; usb_device_t **device; UInt8 port = 0; /* get some info from the io registry */ (void) get_ioregistry_value_number (service, CFSTR("sessionID"), kCFNumberSInt64Type, &sessionID); if (!get_device_port (service, &port)) { usbi_dbg("could not get connected port number"); } usbi_dbg("finding cached device for sessionID 0x%" PRIx64, sessionID); if (get_device_parent_sessionID(service, &parent_sessionID)) { usbi_dbg("parent sessionID: 0x%" PRIx64, parent_sessionID); } usbi_mutex_lock(&darwin_cached_devices_lock); do { *cached_out = NULL; list_for_each_entry(new_device, &darwin_cached_devices, list, struct darwin_cached_device) { usbi_dbg("matching sessionID 0x%" PRIx64 " against cached device with sessionID 0x%" PRIx64, sessionID, new_device->session); if (new_device->session == sessionID) { usbi_dbg("using cached device for device"); *cached_out = new_device; break; } } if (*cached_out) break; usbi_dbg("caching new device with sessionID 0x%" PRIx64, sessionID); device = darwin_device_from_service (service); if (!device) { ret = LIBUSB_ERROR_NO_DEVICE; break; } new_device = calloc (1, sizeof (*new_device)); if (!new_device) { ret = LIBUSB_ERROR_NO_MEM; break; } /* add this device to the cached device list */ list_add(&new_device->list, &darwin_cached_devices); (*device)->GetDeviceAddress (device, (USBDeviceAddress *)&new_device->address); /* keep a reference to this device */ darwin_ref_cached_device(new_device); new_device->device = device; new_device->session = sessionID; (*device)->GetLocationID (device, &new_device->location); new_device->port = port; new_device->parent_session = parent_sessionID; /* cache the device descriptor */ ret = darwin_cache_device_descriptor(ctx, new_device); if (ret) break; if (new_device->can_enumerate) { snprintf(new_device->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", new_device->address, new_device->dev_descriptor.idVendor, new_device->dev_descriptor.idProduct, new_device->dev_descriptor.bDeviceClass, new_device->dev_descriptor.bDeviceSubClass); } } while (0); usbi_mutex_unlock(&darwin_cached_devices_lock); /* keep track of devices regardless of if we successfully enumerate them to prevent them from being enumerated multiple times */ *cached_out = new_device; return ret; } static int process_new_device (struct libusb_context *ctx, io_service_t service) { struct darwin_device_priv *priv; struct libusb_device *dev = NULL; struct darwin_cached_device *cached_device; UInt8 devSpeed; int ret = 0; do { ret = darwin_get_cached_device (ctx, service, &cached_device); if (ret < 0 || !cached_device->can_enumerate) { return ret; } /* check current active configuration (and cache the first configuration value-- which may be used by claim_interface) */ ret = darwin_check_configuration (ctx, cached_device); if (ret) break; usbi_dbg ("allocating new device in context %p for with session 0x%" PRIx64, ctx, cached_device->session); dev = usbi_alloc_device(ctx, (unsigned long) cached_device->session); if (!dev) { return LIBUSB_ERROR_NO_MEM; } priv = (struct darwin_device_priv *)dev->os_priv; priv->dev = cached_device; darwin_ref_cached_device (priv->dev); if (cached_device->parent_session > 0) { dev->parent_dev = usbi_get_device_by_session_id (ctx, (unsigned long) cached_device->parent_session); } else { dev->parent_dev = NULL; } dev->port_number = cached_device->port; dev->bus_number = cached_device->location >> 24; dev->device_address = cached_device->address; (*(priv->dev->device))->GetDeviceSpeed (priv->dev->device, &devSpeed); switch (devSpeed) { case kUSBDeviceSpeedLow: dev->speed = LIBUSB_SPEED_LOW; break; case kUSBDeviceSpeedFull: dev->speed = LIBUSB_SPEED_FULL; break; case kUSBDeviceSpeedHigh: dev->speed = LIBUSB_SPEED_HIGH; break; #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070 case kUSBDeviceSpeedSuper: dev->speed = LIBUSB_SPEED_SUPER; break; #endif #if MAC_OS_X_VERSION_MAX_ALLOWED >= 101200 case kUSBDeviceSpeedSuperPlus: dev->speed = LIBUSB_SPEED_SUPER_PLUS; break; #endif default: usbi_warn (ctx, "Got unknown device speed %d", devSpeed); } ret = usbi_sanitize_device (dev); if (ret < 0) break; usbi_dbg ("found device with address %d port = %d parent = %p at %p", dev->device_address, dev->port_number, (void *) dev->parent_dev, priv->dev->sys_path); } while (0); if (0 == ret) { usbi_connect_device (dev); } else { libusb_unref_device (dev); } return ret; } static int darwin_scan_devices(struct libusb_context *ctx) { io_iterator_t deviceIterator; io_service_t service; kern_return_t kresult; kresult = usb_setup_device_iterator (&deviceIterator, 0); if (kresult != kIOReturnSuccess) return darwin_to_libusb (kresult); while ((service = IOIteratorNext (deviceIterator))) { (void) process_new_device (ctx, service); IOObjectRelease(service); } IOObjectRelease(deviceIterator); return 0; } static int darwin_open (struct libusb_device_handle *dev_handle) { struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); IOReturn kresult; if (0 == dpriv->open_count) { /* try to open the device */ kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device); if (kresult != kIOReturnSuccess) { usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult)); if (kIOReturnExclusiveAccess != kresult) { return darwin_to_libusb (kresult); } /* it is possible to perform some actions on a device that is not open so do not return an error */ priv->is_open = 0; } else { priv->is_open = 1; } /* create async event source */ kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource); if (kresult != kIOReturnSuccess) { usbi_err (HANDLE_CTX (dev_handle), "CreateDeviceAsyncEventSource: %s", darwin_error_str(kresult)); if (priv->is_open) { (*(dpriv->device))->USBDeviceClose (dpriv->device); } priv->is_open = 0; return darwin_to_libusb (kresult); } CFRetain (libusb_darwin_acfl); /* add the cfSource to the aync run loop */ CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes); } /* device opened successfully */ dpriv->open_count++; usbi_dbg ("device open for access"); return 0; } static void darwin_close (struct libusb_device_handle *dev_handle) { struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); IOReturn kresult; int i; if (dpriv->open_count == 0) { /* something is probably very wrong if this is the case */ usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!"); return; } dpriv->open_count--; /* make sure all interfaces are released */ for (i = 0 ; i < USB_MAXINTERFACES ; i++) if (dev_handle->claimed_interfaces & (1 << i)) libusb_release_interface (dev_handle, i); if (0 == dpriv->open_count) { /* delete the device's async event source */ if (priv->cfSource) { CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode); CFRelease (priv->cfSource); priv->cfSource = NULL; CFRelease (libusb_darwin_acfl); } if (priv->is_open) { /* close the device */ kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device); if (kresult) { /* Log the fact that we had a problem closing the file, however failing a * close isn't really an error, so return success anyway */ usbi_warn (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult)); } } } } static int darwin_get_configuration(struct libusb_device_handle *dev_handle, int *config) { struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); *config = (int) dpriv->active_config; return 0; } static int darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) { struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); IOReturn kresult; int i; /* Setting configuration will invalidate the interface, so we need to reclaim it. First, dispose of existing interfaces, if any. */ for (i = 0 ; i < USB_MAXINTERFACES ; i++) if (dev_handle->claimed_interfaces & (1 << i)) darwin_release_interface (dev_handle, i); kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, config); if (kresult != kIOReturnSuccess) return darwin_to_libusb (kresult); /* Reclaim any interfaces. */ for (i = 0 ; i < USB_MAXINTERFACES ; i++) if (dev_handle->claimed_interfaces & (1 << i)) darwin_claim_interface (dev_handle, i); dpriv->active_config = config; return 0; } static int darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) { IOUSBFindInterfaceRequest request; kern_return_t kresult; io_iterator_t interface_iterator; UInt8 bInterfaceNumber; int ret; *usbInterfacep = IO_OBJECT_NULL; /* Setup the Interface Request */ request.bInterfaceClass = kIOUSBFindInterfaceDontCare; request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare; request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare; request.bAlternateSetting = kIOUSBFindInterfaceDontCare; kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator); if (kresult) return kresult; while ((*usbInterfacep = IOIteratorNext(interface_iterator))) { /* find the interface number */ ret = get_ioregistry_value_number (*usbInterfacep, CFSTR("bInterfaceNumber"), kCFNumberSInt8Type, &bInterfaceNumber); if (ret && bInterfaceNumber == ifc) { break; } (void) IOObjectRelease (*usbInterfacep); } /* done with the interface iterator */ IOObjectRelease(interface_iterator); return 0; } static int get_endpoints (struct libusb_device_handle *dev_handle, int iface) { struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; /* current interface */ struct darwin_interface *cInterface = &priv->interfaces[iface]; kern_return_t kresult; UInt8 numep, direction, number; UInt8 dont_care1, dont_care3; UInt16 dont_care2; int rc; usbi_dbg ("building table of endpoints."); /* retrieve the total number of endpoints on this interface */ kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep); if (kresult) { usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult)); return darwin_to_libusb (kresult); } /* iterate through pipe references */ for (int i = 1 ; i <= numep ; i++) { kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1, &dont_care2, &dont_care3); if (kresult != kIOReturnSuccess) { /* probably a buggy device. try to get the endpoint address from the descriptors */ struct libusb_config_descriptor *config; const struct libusb_endpoint_descriptor *endpoint_desc; UInt8 alt_setting; kresult = (*(cInterface->interface))->GetAlternateSetting (cInterface->interface, &alt_setting); if (kresult) { usbi_err (HANDLE_CTX (dev_handle), "can't get alternate setting for interface"); return darwin_to_libusb (kresult); } rc = libusb_get_active_config_descriptor (dev_handle->dev, &config); if (LIBUSB_SUCCESS != rc) { return rc; } endpoint_desc = config->interface[iface].altsetting[alt_setting].endpoint + i - 1; cInterface->endpoint_addrs[i - 1] = endpoint_desc->bEndpointAddress; } else { cInterface->endpoint_addrs[i - 1] = (((kUSBIn == direction) << kUSBRqDirnShift) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK)); } usbi_dbg ("interface: %i pipe %i: dir: %i number: %i", iface, i, cInterface->endpoint_addrs[i - 1] >> kUSBRqDirnShift, cInterface->endpoint_addrs[i - 1] & LIBUSB_ENDPOINT_ADDRESS_MASK); } cInterface->num_endpoints = numep; return 0; } static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface) { struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; io_service_t usbInterface = IO_OBJECT_NULL; IOReturn kresult; IOCFPlugInInterface **plugInInterface = NULL; SInt32 score; /* current interface */ struct darwin_interface *cInterface = &priv->interfaces[iface]; kresult = darwin_get_interface (dpriv->device, iface, &usbInterface); if (kresult != kIOReturnSuccess) return darwin_to_libusb (kresult); /* make sure we have an interface */ if (!usbInterface && dpriv->first_config != 0) { usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config); /* set the configuration */ kresult = darwin_set_configuration (dev_handle, dpriv->first_config); if (kresult != LIBUSB_SUCCESS) { usbi_err (HANDLE_CTX (dev_handle), "could not set configuration"); return kresult; } kresult = darwin_get_interface (dpriv->device, iface, &usbInterface); if (kresult) { usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult)); return darwin_to_libusb (kresult); } } if (!usbInterface) { usbi_err (HANDLE_CTX (dev_handle), "interface not found"); return LIBUSB_ERROR_NOT_FOUND; } /* get an interface to the device's interface */ kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID, kIOCFPlugInInterfaceID, &plugInInterface, &score); /* ignore release error */ (void)IOObjectRelease (usbInterface); if (kresult) { usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult)); return darwin_to_libusb (kresult); } if (!plugInInterface) { usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found"); return LIBUSB_ERROR_NOT_FOUND; } /* Do the actual claim */ kresult = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID), (LPVOID)&cInterface->interface); /* We no longer need the intermediate plug-in */ /* Use release instead of IODestroyPlugInInterface to avoid stopping IOServices associated with this device */ (*plugInInterface)->Release (plugInInterface); if (kresult || !cInterface->interface) { usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult)); return darwin_to_libusb (kresult); } /* claim the interface */ kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface); if (kresult) { usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult)); return darwin_to_libusb (kresult); } /* update list of endpoints */ kresult = get_endpoints (dev_handle, iface); if (kresult) { /* this should not happen */ darwin_release_interface (dev_handle, iface); usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table"); return kresult; } cInterface->cfSource = NULL; /* create async event source */ kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource); if (kresult != kIOReturnSuccess) { usbi_err (HANDLE_CTX (dev_handle), "could not create async event source"); /* can't continue without an async event source */ (void)darwin_release_interface (dev_handle, iface); return darwin_to_libusb (kresult); } /* add the cfSource to the async thread's run loop */ CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode); usbi_dbg ("interface opened"); return 0; } static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface) { struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; IOReturn kresult; /* current interface */ struct darwin_interface *cInterface = &priv->interfaces[iface]; /* Check to see if an interface is open */ if (!cInterface->interface) return LIBUSB_SUCCESS; /* clean up endpoint data */ cInterface->num_endpoints = 0; /* delete the interface's async event source */ if (cInterface->cfSource) { CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode); CFRelease (cInterface->cfSource); } kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface); if (kresult) usbi_warn (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult)); kresult = (*(cInterface->interface))->Release(cInterface->interface); if (kresult != kIOReturnSuccess) usbi_warn (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult)); cInterface->interface = (usb_interface_t **) IO_OBJECT_NULL; return darwin_to_libusb (kresult); } static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) { struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv; IOReturn kresult; /* current interface */ struct darwin_interface *cInterface = &priv->interfaces[iface]; if (!cInterface->interface) return LIBUSB_ERROR_NO_DEVICE; kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting); if (kresult != kIOReturnSuccess) darwin_reset_device (dev_handle); /* update list of endpoints */ kresult = get_endpoints (dev_handle, iface); if (kresult) { /* this should not happen */ darwin_release_interface (dev_handle, iface); usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table"); return kresult; } return darwin_to_libusb (kresult); } static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) { /* current interface */ struct darwin_interface *cInterface; IOReturn kresult; uint8_t pipeRef; /* determine the interface/endpoint to use */ if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, NULL, &cInterface) != 0) { usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface"); return LIBUSB_ERROR_NOT_FOUND; } /* newer versions of darwin support clearing additional bits on the device's endpoint */ kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef); if (kresult) usbi_warn (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult)); return darwin_to_libusb (kresult); } static int darwin_reset_device(struct libusb_device_handle *dev_handle) { struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); IOUSBDeviceDescriptor descriptor; IOUSBConfigurationDescriptorPtr cached_configuration; IOUSBConfigurationDescriptor configuration; bool reenumerate = false; IOReturn kresult; int i; kresult = (*(dpriv->device))->ResetDevice (dpriv->device); if (kresult) { usbi_err (HANDLE_CTX (dev_handle), "ResetDevice: %s", darwin_error_str (kresult)); return darwin_to_libusb (kresult); } do { usbi_dbg ("darwin/reset_device: checking if device descriptor changed"); /* ignore return code. if we can't get a descriptor it might be worthwhile re-enumerating anway */ (void) darwin_request_descriptor (dpriv->device, kUSBDeviceDesc, 0, &descriptor, sizeof (descriptor)); /* check if the device descriptor has changed */ if (0 != memcmp (&dpriv->dev_descriptor, &descriptor, sizeof (descriptor))) { reenumerate = true; break; } /* check if any configuration descriptor has changed */ for (i = 0 ; i < descriptor.bNumConfigurations ; ++i) { usbi_dbg ("darwin/reset_device: checking if configuration descriptor %d changed", i); (void) darwin_request_descriptor (dpriv->device, kUSBConfDesc, i, &configuration, sizeof (configuration)); (*(dpriv->device))->GetConfigurationDescriptorPtr (dpriv->device, i, &cached_configuration); if (!cached_configuration || 0 != memcmp (cached_configuration, &configuration, sizeof (configuration))) { reenumerate = true; break; } } } while (0); if (reenumerate) { usbi_dbg ("darwin/reset_device: device requires reenumeration"); (void) (*(dpriv->device))->USBDeviceReEnumerate (dpriv->device, 0); return LIBUSB_ERROR_NOT_FOUND; } usbi_dbg ("darwin/reset_device: device reset complete"); return LIBUSB_SUCCESS; } static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, int interface) { struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(dev_handle->dev); io_service_t usbInterface; CFTypeRef driver; IOReturn kresult; kresult = darwin_get_interface (dpriv->device, interface, &usbInterface); if (kresult) { usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult)); return darwin_to_libusb (kresult); } driver = IORegistryEntryCreateCFProperty (usbInterface, kIOBundleIdentifierKey, kCFAllocatorDefault, 0); IOObjectRelease (usbInterface); if (driver) { CFRelease (driver); return 1; } /* no driver */ return 0; } /* attaching/detaching kernel drivers is not currently supported (maybe in the future?) */ static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) { UNUSED(dev_handle); UNUSED(interface); return LIBUSB_ERROR_NOT_SUPPORTED; } static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) { UNUSED(dev_handle); UNUSED(interface); return LIBUSB_ERROR_NOT_SUPPORTED; } static void darwin_destroy_device(struct libusb_device *dev) { struct darwin_device_priv *dpriv = (struct darwin_device_priv *) dev->os_priv; if (dpriv->dev) { /* need to hold the lock in case this is the last reference to the device */ usbi_mutex_lock(&darwin_cached_devices_lock); darwin_deref_cached_device (dpriv->dev); dpriv->dev = NULL; usbi_mutex_unlock(&darwin_cached_devices_lock); } } static int submit_bulk_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); IOReturn ret; uint8_t transferType; /* None of the values below are used in libusbx for bulk transfers */ uint8_t direction, number, interval, pipeRef; uint16_t maxPacketSize; struct darwin_interface *cInterface; if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); return LIBUSB_ERROR_NOT_FOUND; } ret = (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number, &transferType, &maxPacketSize, &interval); if (ret) { usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out", darwin_error_str(ret), ret); return darwin_to_libusb (ret); } if (0 != (transfer->length % maxPacketSize)) { /* do not need a zero packet */ transfer->flags &= ~LIBUSB_TRANSFER_ADD_ZERO_PACKET; } /* submit the request */ /* timeouts are unavailable on interrupt endpoints */ if (transferType == kUSBInterrupt) { if (IS_XFERIN(transfer)) ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer, transfer->length, darwin_async_io_callback, itransfer); else ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer, transfer->length, darwin_async_io_callback, itransfer); } else { itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; if (IS_XFERIN(transfer)) ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer, transfer->length, transfer->timeout, transfer->timeout, darwin_async_io_callback, (void *)itransfer); else ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer, transfer->length, transfer->timeout, transfer->timeout, darwin_async_io_callback, (void *)itransfer); } if (ret) usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out", darwin_error_str(ret), ret); return darwin_to_libusb (ret); } #if InterfaceVersion >= 550 static int submit_stream_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct darwin_interface *cInterface; uint8_t pipeRef; IOReturn ret; if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); return LIBUSB_ERROR_NOT_FOUND; } itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; if (IS_XFERIN(transfer)) ret = (*(cInterface->interface))->ReadStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id, transfer->buffer, transfer->length, transfer->timeout, transfer->timeout, darwin_async_io_callback, (void *)itransfer); else ret = (*(cInterface->interface))->WriteStreamsPipeAsyncTO(cInterface->interface, pipeRef, itransfer->stream_id, transfer->buffer, transfer->length, transfer->timeout, transfer->timeout, darwin_async_io_callback, (void *)itransfer); if (ret) usbi_err (TRANSFER_CTX (transfer), "bulk stream transfer failed (dir = %s): %s (code = 0x%08x)", IS_XFERIN(transfer) ? "In" : "Out", darwin_error_str(ret), ret); return darwin_to_libusb (ret); } #endif static int submit_iso_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); IOReturn kresult; uint8_t direction, number, interval, pipeRef, transferType; uint16_t maxPacketSize; UInt64 frame; AbsoluteTime atTime; int i; struct darwin_interface *cInterface; /* construct an array of IOUSBIsocFrames, reuse the old one if possible */ if (tpriv->isoc_framelist && tpriv->num_iso_packets != transfer->num_iso_packets) { free(tpriv->isoc_framelist); tpriv->isoc_framelist = NULL; } if (!tpriv->isoc_framelist) { tpriv->num_iso_packets = transfer->num_iso_packets; tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc (transfer->num_iso_packets, sizeof(IOUSBIsocFrame)); if (!tpriv->isoc_framelist) return LIBUSB_ERROR_NO_MEM; } /* copy the frame list from the libusb descriptor (the structures differ only is member order) */ for (i = 0 ; i < transfer->num_iso_packets ; i++) tpriv->isoc_framelist[i].frReqCount = transfer->iso_packet_desc[i].length; /* determine the interface/endpoint to use */ if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); return LIBUSB_ERROR_NOT_FOUND; } /* determine the properties of this endpoint and the speed of the device */ (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number, &transferType, &maxPacketSize, &interval); /* Last but not least we need the bus frame number */ kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime); if (kresult) { usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult); free(tpriv->isoc_framelist); tpriv->isoc_framelist = NULL; return darwin_to_libusb (kresult); } (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number, &transferType, &maxPacketSize, &interval); /* schedule for a frame a little in the future */ frame += 4; if (cInterface->frames[transfer->endpoint] && frame < cInterface->frames[transfer->endpoint]) frame = cInterface->frames[transfer->endpoint]; /* submit the request */ if (IS_XFERIN(transfer)) kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame, transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback, itransfer); else kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame, transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback, itransfer); if (LIBUSB_SPEED_FULL == transfer->dev_handle->dev->speed) /* Full speed */ cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets * (1 << (interval - 1)); else /* High/super speed */ cInterface->frames[transfer->endpoint] = frame + transfer->num_iso_packets * (1 << (interval - 1)) / 8; if (kresult != kIOReturnSuccess) { usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", IS_XFERIN(transfer) ? "In" : "Out", darwin_error_str(kresult)); free (tpriv->isoc_framelist); tpriv->isoc_framelist = NULL; } return darwin_to_libusb (kresult); } static int submit_control_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer; struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev); struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); IOReturn kresult; memset(&tpriv->req, 0, sizeof(tpriv->req)); /* IOUSBDeviceInterface expects the request in cpu endianness */ tpriv->req.bmRequestType = setup->bmRequestType; tpriv->req.bRequest = setup->bRequest; /* these values should be in bus order from libusb_fill_control_setup */ tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue); tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex); tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength); /* data is stored after the libusb control block */ tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE; tpriv->req.completionTimeout = transfer->timeout; tpriv->req.noDataTimeout = transfer->timeout; itransfer->timeout_flags |= USBI_TRANSFER_OS_HANDLES_TIMEOUT; /* all transfers in libusb-1.0 are async */ if (transfer->endpoint) { struct darwin_interface *cInterface; uint8_t pipeRef; if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface) != 0) { usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); return LIBUSB_ERROR_NOT_FOUND; } kresult = (*(cInterface->interface))->ControlRequestAsyncTO (cInterface->interface, pipeRef, &(tpriv->req), darwin_async_io_callback, itransfer); } else /* control request on endpoint 0 */ kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer); if (kresult != kIOReturnSuccess) usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult)); return darwin_to_libusb (kresult); } static int darwin_submit_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: return submit_control_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: return submit_bulk_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: return submit_iso_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_BULK_STREAM: #if InterfaceVersion >= 550 return submit_stream_transfer(itransfer); #else usbi_err (TRANSFER_CTX(transfer), "IOUSBFamily version does not support bulk stream transfers"); return LIBUSB_ERROR_NOT_SUPPORTED; #endif default: usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); return LIBUSB_ERROR_INVALID_PARAM; } } static int cancel_control_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev); IOReturn kresult; usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions control pipe"); if (!dpriv->device) return LIBUSB_ERROR_NO_DEVICE; kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device); return darwin_to_libusb (kresult); } static int darwin_abort_transfers (struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct darwin_cached_device *dpriv = DARWIN_CACHED_DEVICE(transfer->dev_handle->dev); struct darwin_interface *cInterface; uint8_t pipeRef, iface; IOReturn kresult; if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface, &cInterface) != 0) { usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface"); return LIBUSB_ERROR_NOT_FOUND; } if (!dpriv->device) return LIBUSB_ERROR_NO_DEVICE; usbi_warn (ITRANSFER_CTX (itransfer), "aborting all transactions on interface %d pipe %d", iface, pipeRef); /* abort transactions */ #if InterfaceVersion >= 550 if (LIBUSB_TRANSFER_TYPE_BULK_STREAM == transfer->type) (*(cInterface->interface))->AbortStreamsPipe (cInterface->interface, pipeRef, itransfer->stream_id); else #endif (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef); usbi_dbg ("calling clear pipe stall to clear the data toggle bit"); /* newer versions of darwin support clearing additional bits on the device's endpoint */ kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef); return darwin_to_libusb (kresult); } static int darwin_cancel_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: return cancel_control_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: return darwin_abort_transfers (itransfer); default: usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); return LIBUSB_ERROR_INVALID_PARAM; } } static void darwin_clear_transfer_priv (struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && tpriv->isoc_framelist) { free (tpriv->isoc_framelist); tpriv->isoc_framelist = NULL; } } static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) { struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon; struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); usbi_dbg ("an async io operation has completed"); /* if requested write a zero packet */ if (kIOReturnSuccess == result && IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) { struct darwin_interface *cInterface; uint8_t pipeRef; (void) ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, NULL, &cInterface); (*(cInterface->interface))->WritePipe (cInterface->interface, pipeRef, transfer->buffer, 0); } tpriv->result = result; tpriv->size = (UInt32) (uintptr_t) arg0; /* signal the core that this transfer is complete */ usbi_signal_transfer_completion(itransfer); } static int darwin_transfer_status (struct usbi_transfer *itransfer, kern_return_t result) { if (itransfer->timeout_flags & USBI_TRANSFER_TIMED_OUT) result = kIOUSBTransactionTimeout; switch (result) { case kIOReturnUnderrun: case kIOReturnSuccess: return LIBUSB_TRANSFER_COMPLETED; case kIOReturnAborted: return LIBUSB_TRANSFER_CANCELLED; case kIOUSBPipeStalled: usbi_dbg ("transfer error: pipe is stalled"); return LIBUSB_TRANSFER_STALL; case kIOReturnOverrun: usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: data overrun"); return LIBUSB_TRANSFER_OVERFLOW; case kIOUSBTransactionTimeout: usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: timed out"); itransfer->timeout_flags |= USBI_TRANSFER_TIMED_OUT; return LIBUSB_TRANSFER_TIMED_OUT; default: usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result); return LIBUSB_TRANSFER_ERROR; } } static int darwin_handle_transfer_completion (struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer); int isIsoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type; int isBulk = LIBUSB_TRANSFER_TYPE_BULK == transfer->type; int isControl = LIBUSB_TRANSFER_TYPE_CONTROL == transfer->type; int isInterrupt = LIBUSB_TRANSFER_TYPE_INTERRUPT == transfer->type; int i; if (!isIsoc && !isBulk && !isControl && !isInterrupt) { usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); return LIBUSB_ERROR_INVALID_PARAM; } usbi_dbg ("handling %s completion with kernel status %d", isControl ? "control" : isBulk ? "bulk" : isIsoc ? "isoc" : "interrupt", tpriv->result); if (kIOReturnSuccess == tpriv->result || kIOReturnUnderrun == tpriv->result) { if (isIsoc && tpriv->isoc_framelist) { /* copy isochronous results back */ for (i = 0; i < transfer->num_iso_packets ; i++) { struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i]; lib_desc->status = darwin_to_libusb (tpriv->isoc_framelist[i].frStatus); lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount; } } else if (!isIsoc) itransfer->transferred += tpriv->size; } /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */ return usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, tpriv->result)); } static int darwin_clock_gettime(int clk_id, struct timespec *tp) { #if !OSX_USE_CLOCK_GETTIME mach_timespec_t sys_time; clock_serv_t clock_ref; switch (clk_id) { case USBI_CLOCK_REALTIME: /* CLOCK_REALTIME represents time since the epoch */ clock_ref = clock_realtime; break; case USBI_CLOCK_MONOTONIC: /* use system boot time as reference for the monotonic clock */ clock_ref = clock_monotonic; break; default: return LIBUSB_ERROR_INVALID_PARAM; } clock_get_time (clock_ref, &sys_time); tp->tv_sec = sys_time.tv_sec; tp->tv_nsec = sys_time.tv_nsec; return 0; #else switch (clk_id) { case USBI_CLOCK_MONOTONIC: return clock_gettime(CLOCK_MONOTONIC, tp); case USBI_CLOCK_REALTIME: return clock_gettime(CLOCK_REALTIME, tp); default: return LIBUSB_ERROR_INVALID_PARAM; } #endif } #if InterfaceVersion >= 550 static int darwin_alloc_streams (struct libusb_device_handle *dev_handle, uint32_t num_streams, unsigned char *endpoints, int num_endpoints) { struct darwin_interface *cInterface; UInt32 supportsStreams; uint8_t pipeRef; int rc, i; /* find the mimimum number of supported streams on the endpoint list */ for (i = 0 ; i < num_endpoints ; ++i) { if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface))) { return rc; } (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams); if (num_streams > supportsStreams) num_streams = supportsStreams; } /* it is an error if any endpoint in endpoints does not support streams */ if (0 == num_streams) return LIBUSB_ERROR_INVALID_PARAM; /* create the streams */ for (i = 0 ; i < num_endpoints ; ++i) { (void) ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface); rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, num_streams); if (kIOReturnSuccess != rc) return darwin_to_libusb(rc); } return num_streams; } static int darwin_free_streams (struct libusb_device_handle *dev_handle, unsigned char *endpoints, int num_endpoints) { struct darwin_interface *cInterface; UInt32 supportsStreams; uint8_t pipeRef; int rc; for (int i = 0 ; i < num_endpoints ; ++i) { if (0 != (rc = ep_to_pipeRef (dev_handle, endpoints[i], &pipeRef, NULL, &cInterface))) return rc; (*(cInterface->interface))->SupportsStreams (cInterface->interface, pipeRef, &supportsStreams); if (0 == supportsStreams) return LIBUSB_ERROR_INVALID_PARAM; rc = (*(cInterface->interface))->CreateStreams (cInterface->interface, pipeRef, 0); if (kIOReturnSuccess != rc) return darwin_to_libusb(rc); } return LIBUSB_SUCCESS; } #endif const struct usbi_os_backend usbi_backend = { .name = "Darwin", .caps = 0, .init = darwin_init, .exit = darwin_exit, .get_device_list = NULL, /* not needed */ .get_device_descriptor = darwin_get_device_descriptor, .get_active_config_descriptor = darwin_get_active_config_descriptor, .get_config_descriptor = darwin_get_config_descriptor, .hotplug_poll = darwin_hotplug_poll, .open = darwin_open, .close = darwin_close, .get_configuration = darwin_get_configuration, .set_configuration = darwin_set_configuration, .claim_interface = darwin_claim_interface, .release_interface = darwin_release_interface, .set_interface_altsetting = darwin_set_interface_altsetting, .clear_halt = darwin_clear_halt, .reset_device = darwin_reset_device, #if InterfaceVersion >= 550 .alloc_streams = darwin_alloc_streams, .free_streams = darwin_free_streams, #endif .kernel_driver_active = darwin_kernel_driver_active, .detach_kernel_driver = darwin_detach_kernel_driver, .attach_kernel_driver = darwin_attach_kernel_driver, .destroy_device = darwin_destroy_device, .submit_transfer = darwin_submit_transfer, .cancel_transfer = darwin_cancel_transfer, .clear_transfer_priv = darwin_clear_transfer_priv, .handle_transfer_completion = darwin_handle_transfer_completion, .clock_gettime = darwin_clock_gettime, .device_priv_size = sizeof(struct darwin_device_priv), .device_handle_priv_size = sizeof(struct darwin_device_handle_priv), .transfer_priv_size = sizeof(struct darwin_transfer_priv), }; release/libusb/libusb/os/poll_windows.c0000664000000000000000000002134414261476161017257 0ustar rootroot/* * poll_windows: poll compatibility wrapper for Windows * Copyright © 2017 Chris Dickens * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ /* * poll() and pipe() Windows compatibility layer for libusb 1.0 * * The way this layer works is by using OVERLAPPED with async I/O transfers, as * OVERLAPPED have an associated event which is flagged for I/O completion. * * For USB pollable async I/O, you would typically: * - obtain a Windows HANDLE to a file or device that has been opened in * OVERLAPPED mode * - call usbi_create_fd with this handle to obtain a custom fd. * - leave the core functions call the poll routine and flag POLLIN/POLLOUT * * The pipe pollable synchronous I/O works using the overlapped event associated * with a fake pipe. The read/write functions are only meant to be used in that * context. */ #include #include #include #include #include "libusbi.h" #include "windows_common.h" // public fd data const struct winfd INVALID_WINFD = { -1, NULL }; // private data struct file_descriptor { enum fd_type { FD_TYPE_PIPE, FD_TYPE_TRANSFER } type; OVERLAPPED overlapped; }; static usbi_mutex_static_t fd_table_lock = USBI_MUTEX_INITIALIZER; static struct file_descriptor *fd_table[MAX_FDS]; static struct file_descriptor *create_fd(enum fd_type type) { struct file_descriptor *fd = calloc(1, sizeof(*fd)); if (fd == NULL) return NULL; fd->overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); if (fd->overlapped.hEvent == NULL) { free(fd); return NULL; } fd->type = type; return fd; } static void free_fd(struct file_descriptor *fd) { CloseHandle(fd->overlapped.hEvent); free(fd); } /* * Create both an fd and an OVERLAPPED, so that it can be used with our * polling function * The handle MUST support overlapped transfers (usually requires CreateFile * with FILE_FLAG_OVERLAPPED) * Return a pollable file descriptor struct, or INVALID_WINFD on error * * Note that the fd returned by this function is a per-transfer fd, rather * than a per-session fd and cannot be used for anything else but our * custom functions. * if you plan to do R/W on the same handle, you MUST create 2 fds: one for * read and one for write. Using a single R/W fd is unsupported and will * produce unexpected results */ struct winfd usbi_create_fd(void) { struct file_descriptor *fd; struct winfd wfd; fd = create_fd(FD_TYPE_TRANSFER); if (fd == NULL) return INVALID_WINFD; usbi_mutex_static_lock(&fd_table_lock); for (wfd.fd = 0; wfd.fd < MAX_FDS; wfd.fd++) { if (fd_table[wfd.fd] != NULL) continue; fd_table[wfd.fd] = fd; break; } usbi_mutex_static_unlock(&fd_table_lock); if (wfd.fd == MAX_FDS) { free_fd(fd); return INVALID_WINFD; } wfd.overlapped = &fd->overlapped; return wfd; } static int check_pollfds(struct pollfd *fds, unsigned int nfds, HANDLE *wait_handles, DWORD *nb_wait_handles) { struct file_descriptor *fd; unsigned int n; int nready = 0; usbi_mutex_static_lock(&fd_table_lock); for (n = 0; n < nfds; ++n) { fds[n].revents = 0; // Keep it simple - only allow either POLLIN *or* POLLOUT assert((fds[n].events == POLLIN) || (fds[n].events == POLLOUT)); if ((fds[n].events != POLLIN) && (fds[n].events != POLLOUT)) { fds[n].revents = POLLNVAL; nready++; continue; } if ((fds[n].fd >= 0) && (fds[n].fd < MAX_FDS)) fd = fd_table[fds[n].fd]; else fd = NULL; assert(fd != NULL); if (fd == NULL) { fds[n].revents = POLLNVAL; nready++; continue; } if (HasOverlappedIoCompleted(&fd->overlapped) && (WaitForSingleObject(fd->overlapped.hEvent, 0) == WAIT_OBJECT_0)) { fds[n].revents = fds[n].events; nready++; } else if (wait_handles != NULL) { if (*nb_wait_handles == MAXIMUM_WAIT_OBJECTS) { usbi_warn(NULL, "too many HANDLEs to wait on"); continue; } wait_handles[*nb_wait_handles] = fd->overlapped.hEvent; (*nb_wait_handles)++; } } usbi_mutex_static_unlock(&fd_table_lock); return nready; } /* * POSIX poll equivalent, using Windows OVERLAPPED * Currently, this function only accepts one of POLLIN or POLLOUT per fd * (but you can create multiple fds from the same handle for read and write) */ int usbi_poll(struct pollfd *fds, unsigned int nfds, int timeout) { HANDLE wait_handles[MAXIMUM_WAIT_OBJECTS]; DWORD nb_wait_handles = 0; DWORD ret; int nready; nready = check_pollfds(fds, nfds, wait_handles, &nb_wait_handles); // If nothing was triggered, wait on all fds that require it if ((nready == 0) && (nb_wait_handles != 0) && (timeout != 0)) { ret = WaitForMultipleObjects(nb_wait_handles, wait_handles, FALSE, (timeout < 0) ? INFINITE : (DWORD)timeout); if (ret < (WAIT_OBJECT_0 + nb_wait_handles)) { nready = check_pollfds(fds, nfds, NULL, NULL); } else if (ret != WAIT_TIMEOUT) { if (ret == WAIT_FAILED) usbi_err(NULL, "WaitForMultipleObjects failed: %u", (unsigned int)GetLastError()); nready = -1; } } return nready; } /* * close a fake file descriptor */ int usbi_close(int _fd) { struct file_descriptor *fd; if (_fd < 0 || _fd >= MAX_FDS) goto err_badfd; usbi_mutex_static_lock(&fd_table_lock); fd = fd_table[_fd]; fd_table[_fd] = NULL; usbi_mutex_static_unlock(&fd_table_lock); if (fd == NULL) goto err_badfd; if (fd->type == FD_TYPE_PIPE) { // InternalHigh is our reference count fd->overlapped.InternalHigh--; if (fd->overlapped.InternalHigh == 0) free_fd(fd); } else { free_fd(fd); } return 0; err_badfd: errno = EBADF; return -1; } /* * Create a fake pipe. * As libusb only uses pipes for signaling, all we need from a pipe is an * event. To that extent, we create a single wfd and overlapped as a means * to access that event. */ int usbi_pipe(int filedes[2]) { struct file_descriptor *fd; int r_fd = -1, w_fd = -1; int i; fd = create_fd(FD_TYPE_PIPE); if (fd == NULL) { errno = ENOMEM; return -1; } // Use InternalHigh as a reference count fd->overlapped.Internal = STATUS_PENDING; fd->overlapped.InternalHigh = 2; usbi_mutex_static_lock(&fd_table_lock); do { for (i = 0; i < MAX_FDS; i++) { if (fd_table[i] != NULL) continue; if (r_fd == -1) { r_fd = i; } else if (w_fd == -1) { w_fd = i; break; } } if (i == MAX_FDS) break; fd_table[r_fd] = fd; fd_table[w_fd] = fd; } while (0); usbi_mutex_static_unlock(&fd_table_lock); if (i == MAX_FDS) { free_fd(fd); errno = EMFILE; return -1; } filedes[0] = r_fd; filedes[1] = w_fd; return 0; } /* * synchronous write for fake "pipe" signaling */ ssize_t usbi_write(int fd, const void *buf, size_t count) { int error = EBADF; UNUSED(buf); if (fd < 0 || fd >= MAX_FDS) goto err_out; if (count != sizeof(unsigned char)) { usbi_err(NULL, "this function should only used for signaling"); error = EINVAL; goto err_out; } usbi_mutex_static_lock(&fd_table_lock); if ((fd_table[fd] != NULL) && (fd_table[fd]->type == FD_TYPE_PIPE)) { assert(fd_table[fd]->overlapped.Internal == STATUS_PENDING); assert(fd_table[fd]->overlapped.InternalHigh == 2); fd_table[fd]->overlapped.Internal = STATUS_WAIT_0; SetEvent(fd_table[fd]->overlapped.hEvent); error = 0; } usbi_mutex_static_unlock(&fd_table_lock); if (error) goto err_out; return sizeof(unsigned char); err_out: errno = error; return -1; } /* * synchronous read for fake "pipe" signaling */ ssize_t usbi_read(int fd, void *buf, size_t count) { int error = EBADF; UNUSED(buf); if (fd < 0 || fd >= MAX_FDS) goto err_out; if (count != sizeof(unsigned char)) { usbi_err(NULL, "this function should only used for signaling"); error = EINVAL; goto err_out; } usbi_mutex_static_lock(&fd_table_lock); if ((fd_table[fd] != NULL) && (fd_table[fd]->type == FD_TYPE_PIPE)) { assert(fd_table[fd]->overlapped.Internal == STATUS_WAIT_0); assert(fd_table[fd]->overlapped.InternalHigh == 2); fd_table[fd]->overlapped.Internal = STATUS_PENDING; ResetEvent(fd_table[fd]->overlapped.hEvent); error = 0; } usbi_mutex_static_unlock(&fd_table_lock); if (error) goto err_out; return sizeof(unsigned char); err_out: errno = error; return -1; } release/libusb/libusb/os/poll_posix.c0000664000000000000000000000426714261476161016734 0ustar rootroot/* * poll_posix: poll compatibility wrapper for POSIX systems * Copyright © 2013 RealVNC Ltd. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ #include #include #include #include #include #include "libusbi.h" int usbi_pipe(int pipefd[2]) { #if defined(HAVE_PIPE2) int ret = pipe2(pipefd, O_CLOEXEC); #else int ret = pipe(pipefd); #endif if (ret != 0) { usbi_err(NULL, "failed to create pipe (%d)", errno); return ret; } #if !defined(HAVE_PIPE2) && defined(FD_CLOEXEC) ret = fcntl(pipefd[0], F_GETFD); if (ret == -1) { usbi_err(NULL, "failed to get pipe fd flags (%d)", errno); goto err_close_pipe; } ret = fcntl(pipefd[0], F_SETFD, ret | FD_CLOEXEC); if (ret == -1) { usbi_err(NULL, "failed to set pipe fd flags (%d)", errno); goto err_close_pipe; } ret = fcntl(pipefd[1], F_GETFD); if (ret == -1) { usbi_err(NULL, "failed to get pipe fd flags (%d)", errno); goto err_close_pipe; } ret = fcntl(pipefd[1], F_SETFD, ret | FD_CLOEXEC); if (ret == -1) { usbi_err(NULL, "failed to set pipe fd flags (%d)", errno); goto err_close_pipe; } #endif ret = fcntl(pipefd[1], F_GETFL); if (ret == -1) { usbi_err(NULL, "failed to get pipe fd status flags (%d)", errno); goto err_close_pipe; } ret = fcntl(pipefd[1], F_SETFL, ret | O_NONBLOCK); if (ret == -1) { usbi_err(NULL, "failed to set pipe fd status flags (%d)", errno); goto err_close_pipe; } return 0; err_close_pipe: close(pipefd[0]); close(pipefd[1]); return ret; } release/libusb/libusb/os/windows_usb.c0000664000000000000000000047506114261476162017114 0ustar rootroot/* * windows backend for libusb 1.0 * Copyright © 2009-2012 Pete Batard * With contributions from Michael Plante, Orin Eman et al. * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer * HID Reports IOCTLs inspired from HIDAPI by Alan Ott, Signal 11 Software * Hash table functions adapted from glibc, by Ulrich Drepper et al. * Major code testing contribution by Xiaofan Chen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include "libusbi.h" #include "poll_windows.h" #include "windows_usb.h" // The 2 macros below are used in conjunction with safe loops. #define LOOP_CHECK(fcall) { r=fcall; if (r != LIBUSB_SUCCESS) continue; } #define LOOP_BREAK(err) { r=err; continue; } // Helper prototypes static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian); static int windows_clock_gettime(int clk_id, struct timespec *tp); unsigned __stdcall windows_clock_gettime_threaded(void* param); // Common calls static int common_configure_endpoints(int sub_api, struct libusb_device_handle *dev_handle, int iface); // WinUSB-like API prototypes static int winusbx_init(int sub_api, struct libusb_context *ctx); static int winusbx_exit(int sub_api); static int winusbx_open(int sub_api, struct libusb_device_handle *dev_handle); static void winusbx_close(int sub_api, struct libusb_device_handle *dev_handle); static int winusbx_configure_endpoints(int sub_api, struct libusb_device_handle *dev_handle, int iface); static int winusbx_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface); static int winusbx_release_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface); static int winusbx_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer); static int winusbx_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, int iface, int altsetting); static int winusbx_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer); static int winusbx_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint); static int winusbx_abort_transfers(int sub_api, struct usbi_transfer *itransfer); static int winusbx_abort_control(int sub_api, struct usbi_transfer *itransfer); static int winusbx_reset_device(int sub_api, struct libusb_device_handle *dev_handle); static int winusbx_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, uint32_t io_size); // HID API prototypes static int hid_init(int sub_api, struct libusb_context *ctx); static int hid_exit(int sub_api); static int hid_open(int sub_api, struct libusb_device_handle *dev_handle); static void hid_close(int sub_api, struct libusb_device_handle *dev_handle); static int hid_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface); static int hid_release_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface); static int hid_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, int iface, int altsetting); static int hid_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer); static int hid_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer); static int hid_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint); static int hid_abort_transfers(int sub_api, struct usbi_transfer *itransfer); static int hid_reset_device(int sub_api, struct libusb_device_handle *dev_handle); static int hid_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, uint32_t io_size); // Composite API prototypes static int composite_init(int sub_api, struct libusb_context *ctx); static int composite_exit(int sub_api); static int composite_open(int sub_api, struct libusb_device_handle *dev_handle); static void composite_close(int sub_api, struct libusb_device_handle *dev_handle); static int composite_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface); static int composite_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, int iface, int altsetting); static int composite_release_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface); static int composite_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer); static int composite_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer); static int composite_submit_iso_transfer(int sub_api, struct usbi_transfer *itransfer); static int composite_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint); static int composite_abort_transfers(int sub_api, struct usbi_transfer *itransfer); static int composite_abort_control(int sub_api, struct usbi_transfer *itransfer); static int composite_reset_device(int sub_api, struct libusb_device_handle *dev_handle); static int composite_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, uint32_t io_size); // Global variables uint64_t hires_frequency, hires_ticks_to_ps; const uint64_t epoch_time = UINT64_C(116444736000000000); // 1970.01.01 00:00:000 in MS Filetime int windows_version = WINDOWS_UNDEFINED; static char windows_version_str[128] = "Windows Undefined"; // Concurrency static int concurrent_usage = -1; usbi_mutex_t autoclaim_lock; // Timer thread HANDLE timer_thread = NULL; DWORD timer_thread_id = 0; // API globals #define CHECK_WINUSBX_AVAILABLE(sub_api) do { if (sub_api == SUB_API_NOTSET) sub_api = priv->sub_api; \ if (!WinUSBX[sub_api].initialized) return LIBUSB_ERROR_ACCESS; } while(0) static struct winusb_interface WinUSBX[SUB_API_MAX]; const char* sub_api_name[SUB_API_MAX] = WINUSBX_DRV_NAMES; bool api_hid_available = false; #define CHECK_HID_AVAILABLE do { if (!api_hid_available) return LIBUSB_ERROR_ACCESS; } while (0) static inline BOOLEAN guid_eq(const GUID *guid1, const GUID *guid2) { if ((guid1 != NULL) && (guid2 != NULL)) { return (memcmp(guid1, guid2, sizeof(GUID)) == 0); } return false; } #if defined(ENABLE_LOGGING) static char* guid_to_string(const GUID* guid) { static char guid_string[MAX_GUID_STRING_LENGTH]; if (guid == NULL) return NULL; sprintf(guid_string, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}", (unsigned int)guid->Data1, guid->Data2, guid->Data3, guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3], guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7]); return guid_string; } #endif /* * Converts a windows error to human readable string * uses retval as errorcode, or, if 0, use GetLastError() */ #if defined(ENABLE_LOGGING) static char *windows_error_str(uint32_t retval) { static char err_string[ERR_BUFFER_SIZE]; DWORD size; ssize_t i; uint32_t error_code, format_error; error_code = retval?retval:GetLastError(); safe_sprintf(err_string, ERR_BUFFER_SIZE, "[%u] ", error_code); // Translate codes returned by SetupAPI. The ones we are dealing with are either // in 0x0000xxxx or 0xE000xxxx and can be distinguished from standard error codes. // See http://msdn.microsoft.com/en-us/library/windows/hardware/ff545011.aspx switch (error_code & 0xE0000000) { case 0: error_code = HRESULT_FROM_WIN32(error_code); // Still leaves ERROR_SUCCESS unmodified break; case 0xE0000000: error_code = 0x80000000 | (FACILITY_SETUPAPI << 16) | (error_code & 0x0000FFFF); break; default: break; } size = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), &err_string[safe_strlen(err_string)], ERR_BUFFER_SIZE - (DWORD)safe_strlen(err_string), NULL); if (size == 0) { format_error = GetLastError(); if (format_error) safe_sprintf(err_string, ERR_BUFFER_SIZE, "Windows error code %u (FormatMessage error code %u)", error_code, format_error); else safe_sprintf(err_string, ERR_BUFFER_SIZE, "Unknown error code %u", error_code); } else { // Remove CR/LF terminators for (i=safe_strlen(err_string)-1; (i>=0) && ((err_string[i]==0x0A) || (err_string[i]==0x0D)); i--) { err_string[i] = 0; } } return err_string; } #endif /* * Sanitize Microsoft's paths: convert to uppercase, add prefix and fix backslashes. * Return an allocated sanitized string or NULL on error. */ static char* sanitize_path(const char* path) { const char root_prefix[] = "\\\\.\\"; size_t j, size, root_size; char* ret_path = NULL; size_t add_root = 0; if (path == NULL) return NULL; size = safe_strlen(path)+1; root_size = sizeof(root_prefix)-1; // Microsoft indiscriminately uses '\\?\', '\\.\', '##?#" or "##.#" for root prefixes. if (!((size > 3) && (((path[0] == '\\') && (path[1] == '\\') && (path[3] == '\\')) || ((path[0] == '#') && (path[1] == '#') && (path[3] == '#'))))) { add_root = root_size; size += add_root; } if ((ret_path = (char*) calloc(size, 1)) == NULL) return NULL; safe_strcpy(&ret_path[add_root], size-add_root, path); // Ensure consistency with root prefix for (j=0; jcbSize = sizeof(SP_DEVINFO_DATA); if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) { if (GetLastError() != ERROR_NO_MORE_ITEMS) { usbi_err(ctx, "Could not obtain device info data for index %u: %s", _index, windows_error_str(0)); } pSetupDiDestroyDeviceInfoList(*dev_info); *dev_info = INVALID_HANDLE_VALUE; return false; } return true; } /* * enumerate interfaces for a specific GUID * * Parameters: * dev_info: a pointer to a dev_info list * dev_info_data: a pointer to an SP_DEVINFO_DATA to be filled (or NULL if not needed) * guid: the GUID for which to retrieve interface details * index: zero based index of the interface in the device info list * * Note: it is the responsibility of the caller to free the DEVICE_INTERFACE_DETAIL_DATA * structure returned and call this function repeatedly using the same guid (with an * incremented index starting at zero) until all interfaces have been returned. */ static SP_DEVICE_INTERFACE_DETAIL_DATA_A *get_interface_details(struct libusb_context *ctx, HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, const GUID* guid, unsigned _index) { SP_DEVICE_INTERFACE_DATA dev_interface_data; SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL; DWORD size; if (_index <= 0) { *dev_info = pSetupDiGetClassDevsA(guid, NULL, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE); } if (dev_info_data != NULL) { dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA); if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) { if (GetLastError() != ERROR_NO_MORE_ITEMS) { usbi_err(ctx, "Could not obtain device info data for index %u: %s", _index, windows_error_str(0)); } pSetupDiDestroyDeviceInfoList(*dev_info); *dev_info = INVALID_HANDLE_VALUE; return NULL; } } dev_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); if (!pSetupDiEnumDeviceInterfaces(*dev_info, NULL, guid, _index, &dev_interface_data)) { if (GetLastError() != ERROR_NO_MORE_ITEMS) { usbi_err(ctx, "Could not obtain interface data for index %u: %s", _index, windows_error_str(0)); } pSetupDiDestroyDeviceInfoList(*dev_info); *dev_info = INVALID_HANDLE_VALUE; return NULL; } // Read interface data (dummy + actual) to access the device path if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, NULL, 0, &size, NULL)) { // The dummy call should fail with ERROR_INSUFFICIENT_BUFFER if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) { usbi_err(ctx, "could not access interface data (dummy) for index %u: %s", _index, windows_error_str(0)); goto err_exit; } } else { usbi_err(ctx, "program assertion failed - http://msdn.microsoft.com/en-us/library/ms792901.aspx is wrong."); goto err_exit; } if ((dev_interface_details = (SP_DEVICE_INTERFACE_DETAIL_DATA_A*) calloc(size, 1)) == NULL) { usbi_err(ctx, "could not allocate interface data for index %u.", _index); goto err_exit; } dev_interface_details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A); if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, dev_interface_details, size, &size, NULL)) { usbi_err(ctx, "could not access interface data (actual) for index %u: %s", _index, windows_error_str(0)); } return dev_interface_details; err_exit: pSetupDiDestroyDeviceInfoList(*dev_info); *dev_info = INVALID_HANDLE_VALUE; return NULL; } /* For libusb0 filter */ static SP_DEVICE_INTERFACE_DETAIL_DATA_A *get_interface_details_filter(struct libusb_context *ctx, HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, const GUID* guid, unsigned _index, char* filter_path){ SP_DEVICE_INTERFACE_DATA dev_interface_data; SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL; DWORD size; if (_index <= 0) { *dev_info = pSetupDiGetClassDevsA(guid, NULL, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE); } if (dev_info_data != NULL) { dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA); if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) { if (GetLastError() != ERROR_NO_MORE_ITEMS) { usbi_err(ctx, "Could not obtain device info data for index %u: %s", _index, windows_error_str(0)); } pSetupDiDestroyDeviceInfoList(*dev_info); *dev_info = INVALID_HANDLE_VALUE; return NULL; } } dev_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); if (!pSetupDiEnumDeviceInterfaces(*dev_info, NULL, guid, _index, &dev_interface_data)) { if (GetLastError() != ERROR_NO_MORE_ITEMS) { usbi_err(ctx, "Could not obtain interface data for index %u: %s", _index, windows_error_str(0)); } pSetupDiDestroyDeviceInfoList(*dev_info); *dev_info = INVALID_HANDLE_VALUE; return NULL; } // Read interface data (dummy + actual) to access the device path if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, NULL, 0, &size, NULL)) { // The dummy call should fail with ERROR_INSUFFICIENT_BUFFER if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) { usbi_err(ctx, "could not access interface data (dummy) for index %u: %s", _index, windows_error_str(0)); goto err_exit; } } else { usbi_err(ctx, "program assertion failed - http://msdn.microsoft.com/en-us/library/ms792901.aspx is wrong."); goto err_exit; } if ((dev_interface_details = malloc(size)) == NULL) { usbi_err(ctx, "could not allocate interface data for index %u.", _index); goto err_exit; } dev_interface_details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A); if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, dev_interface_details, size, &size, NULL)) { usbi_err(ctx, "could not access interface data (actual) for index %u: %s", _index, windows_error_str(0)); } // [trobinso] lookup the libusb0 symbolic index. if (dev_interface_details) { HKEY hkey_device_interface=pSetupDiOpenDeviceInterfaceRegKey(*dev_info,&dev_interface_data,0,KEY_READ); if (hkey_device_interface != INVALID_HANDLE_VALUE) { DWORD libusb0_symboliclink_index=0; DWORD value_length=sizeof(DWORD); DWORD value_type=0; LONG status; status = pRegQueryValueExW(hkey_device_interface, L"LUsb0", NULL, &value_type, (LPBYTE) &libusb0_symboliclink_index, &value_length); if (status == ERROR_SUCCESS) { if (libusb0_symboliclink_index < 256) { // libusb0.sys is connected to this device instance. // If the the device interface guid is {F9F3FF14-AE21-48A0-8A25-8011A7A931D9} then it's a filter. safe_sprintf(filter_path, sizeof("\\\\.\\libusb0-0000"), "\\\\.\\libusb0-%04d", libusb0_symboliclink_index); usbi_dbg("assigned libusb0 symbolic link %s", filter_path); } else { // libusb0.sys was connected to this device instance at one time; but not anymore. } } pRegCloseKey(hkey_device_interface); } } return dev_interface_details; err_exit: pSetupDiDestroyDeviceInfoList(*dev_info); *dev_info = INVALID_HANDLE_VALUE; return NULL;} /* Hash table functions - modified From glibc 2.3.2: [Aho,Sethi,Ullman] Compilers: Principles, Techniques and Tools, 1986 [Knuth] The Art of Computer Programming, part 3 (6.4) */ typedef struct htab_entry { unsigned long used; char* str; } htab_entry; htab_entry* htab_table = NULL; usbi_mutex_t htab_write_mutex = NULL; unsigned long htab_size, htab_filled; /* For the used double hash method the table size has to be a prime. To correct the user given table size we need a prime test. This trivial algorithm is adequate because the code is called only during init and the number is likely to be small */ static int isprime(unsigned long number) { // no even number will be passed unsigned int divider = 3; while((divider * divider < number) && (number % divider != 0)) divider += 2; return (number % divider != 0); } /* Before using the hash table we must allocate memory for it. We allocate one element more as the found prime number says. This is done for more effective indexing as explained in the comment for the hash function. */ static int htab_create(struct libusb_context *ctx, unsigned long nel) { if (htab_table != NULL) { usbi_err(ctx, "hash table already allocated"); } // Create a mutex usbi_mutex_init(&htab_write_mutex, NULL); // Change nel to the first prime number not smaller as nel. nel |= 1; while(!isprime(nel)) nel += 2; htab_size = nel; usbi_dbg("using %d entries hash table", nel); htab_filled = 0; // allocate memory and zero out. htab_table = (htab_entry*) calloc(htab_size + 1, sizeof(htab_entry)); if (htab_table == NULL) { usbi_err(ctx, "could not allocate space for hash table"); return 0; } return 1; } /* After using the hash table it has to be destroyed. */ static void htab_destroy(void) { size_t i; if (htab_table == NULL) { return; } for (i=0; i New entry // If the table is full return an error if (htab_filled >= htab_size) { usbi_err(NULL, "hash table is full (%d entries)", htab_size); return 0; } // Concurrent threads might be storing the same entry at the same time // (eg. "simultaneous" enums from different threads) => use a mutex usbi_mutex_lock(&htab_write_mutex); // Just free any previously allocated string (which should be the same as // new one). The possibility of concurrent threads storing a collision // string (same hash, different string) at the same time is extremely low safe_free(htab_table[idx].str); htab_table[idx].used = hval; htab_table[idx].str = (char*) malloc(safe_strlen(str)+1); if (htab_table[idx].str == NULL) { usbi_err(NULL, "could not duplicate string for hash table"); usbi_mutex_unlock(&htab_write_mutex); return 0; } memcpy(htab_table[idx].str, str, safe_strlen(str)+1); ++htab_filled; usbi_mutex_unlock(&htab_write_mutex); return idx; } /* * Returns the session ID of a device's nth level ancestor * If there's no device at the nth level, return 0 */ static unsigned long get_ancestor_session_id(DWORD devinst, unsigned level) { DWORD parent_devinst; unsigned long session_id = 0; char* sanitized_path = NULL; char path[MAX_PATH_LENGTH]; unsigned i; if (level < 1) return 0; for (i = 0; ibNumInterfaces; i++) { intf = &conf_desc->interface[i]; for (j = 0; j < intf->num_altsetting; j++) { intf_desc = &intf->altsetting[j]; for (k = 0; k < intf_desc->bNumEndpoints; k++) { if (intf_desc->endpoint[k].bEndpointAddress == ep) { usbi_dbg("found endpoint %02X on interface %d", intf_desc->bInterfaceNumber); return intf_desc->bInterfaceNumber; } } } } usbi_dbg("endpoint %02X not found on any interface", ep); return LIBUSB_ERROR_NOT_FOUND; } /* * Populate the endpoints addresses of the device_priv interface helper structs */ static int windows_assign_endpoints(struct libusb_device_handle *dev_handle, int iface, int altsetting) { int i, r; struct windows_device_priv *priv = _device_priv(dev_handle->dev); struct libusb_config_descriptor *conf_desc; const struct libusb_interface_descriptor *if_desc; struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); r = libusb_get_config_descriptor(dev_handle->dev, (uint8_t)(priv->active_config-1), &conf_desc); if (r != LIBUSB_SUCCESS) { usbi_warn(ctx, "could not read config descriptor: error %d", r); return r; } if_desc = &conf_desc->interface[iface].altsetting[altsetting]; safe_free(priv->usb_interface[iface].endpoint); if (if_desc->bNumEndpoints == 0) { usbi_dbg("no endpoints found for interface %d", iface); return LIBUSB_SUCCESS; } priv->usb_interface[iface].endpoint = (uint8_t*) malloc(if_desc->bNumEndpoints); if (priv->usb_interface[iface].endpoint == NULL) { return LIBUSB_ERROR_NO_MEM; } priv->usb_interface[iface].nb_endpoints = if_desc->bNumEndpoints; for (i=0; ibNumEndpoints; i++) { priv->usb_interface[iface].endpoint[i] = if_desc->endpoint[i].bEndpointAddress; usbi_dbg("(re)assigned endpoint %02X to interface %d", priv->usb_interface[iface].endpoint[i], iface); } libusb_free_config_descriptor(conf_desc); // Extra init may be required to configure endpoints return priv->apib->configure_endpoints(SUB_API_NOTSET, dev_handle, iface); } // Lookup for a match in the list of API driver names // return -1 if not found, driver match number otherwise static int get_sub_api(char* driver, int api){ int i; const char sep_str[2] = {LIST_SEPARATOR, 0}; char *tok, *tmp_str; size_t len = safe_strlen(driver); if (len == 0) return SUB_API_NOTSET; tmp_str = (char*) calloc(len+1, 1); if (tmp_str == NULL) return SUB_API_NOTSET; memcpy(tmp_str, driver, len+1); tok = strtok(tmp_str, sep_str); while (tok != NULL) { for (i=0; idev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv( transfer->dev_handle); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); int current_interface = *interface_number; int r = LIBUSB_SUCCESS; switch(api_type) { case USB_API_WINUSBX: case USB_API_HID: break; default: return LIBUSB_ERROR_INVALID_PARAM; } usbi_mutex_lock(&autoclaim_lock); if (current_interface < 0) // No serviceable interface was found { for (current_interface=0; current_interfaceusb_interface[current_interface].apib->id == api_type) && (libusb_claim_interface(transfer->dev_handle, current_interface) == LIBUSB_SUCCESS) ) { usbi_dbg("auto-claimed interface %d for control request", current_interface); if (handle_priv->autoclaim_count[current_interface] != 0) { usbi_warn(ctx, "program assertion failed - autoclaim_count was nonzero"); } handle_priv->autoclaim_count[current_interface]++; break; } } if (current_interface == USB_MAXINTERFACES) { usbi_err(ctx, "could not auto-claim any interface"); r = LIBUSB_ERROR_NOT_FOUND; } } else { // If we have a valid interface that was autoclaimed, we must increment // its autoclaim count so that we can prevent an early release. if (handle_priv->autoclaim_count[current_interface] != 0) { handle_priv->autoclaim_count[current_interface]++; } } usbi_mutex_unlock(&autoclaim_lock); *interface_number = current_interface; return r; } static void auto_release(struct usbi_transfer *itransfer) { struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); libusb_device_handle *dev_handle = transfer->dev_handle; struct windows_device_handle_priv* handle_priv = _device_handle_priv(dev_handle); int r; usbi_mutex_lock(&autoclaim_lock); if (handle_priv->autoclaim_count[transfer_priv->interface_number] > 0) { handle_priv->autoclaim_count[transfer_priv->interface_number]--; if (handle_priv->autoclaim_count[transfer_priv->interface_number] == 0) { r = libusb_release_interface(dev_handle, transfer_priv->interface_number); if (r == LIBUSB_SUCCESS) { usbi_dbg("auto-released interface %d", transfer_priv->interface_number); } else { usbi_dbg("failed to auto-release interface %d (%s)", transfer_priv->interface_number, libusb_error_name((enum libusb_error)r)); } } } usbi_mutex_unlock(&autoclaim_lock); } /* Windows version dtection */ static BOOL is_x64(void) { BOOL ret = FALSE; // Detect if we're running a 32 or 64 bit system if (sizeof(uintptr_t) < 8) { DLL_LOAD_PREFIXED(Kernel32.dll, p, IsWow64Process, FALSE); if (pIsWow64Process != NULL) { (*pIsWow64Process)(GetCurrentProcess(), &ret); } } else { ret = TRUE; } return ret; } static void get_windows_version(void) { OSVERSIONINFOEXA vi, vi2; const char* w = 0; const char* w64 = "32 bit"; char* vptr; size_t vlen; unsigned major, minor; ULONGLONG major_equal, minor_equal; BOOL ws; memset(&vi, 0, sizeof(vi)); vi.dwOSVersionInfoSize = sizeof(vi); if (!GetVersionExA((OSVERSIONINFOA *)&vi)) { memset(&vi, 0, sizeof(vi)); vi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA); if (!GetVersionExA((OSVERSIONINFOA *)&vi)) return; } if (vi.dwPlatformId == VER_PLATFORM_WIN32_NT) { if (vi.dwMajorVersion > 6 || (vi.dwMajorVersion == 6 && vi.dwMinorVersion >= 2)) { // Starting with Windows 8.1 Preview, GetVersionEx() does no longer report the actual OS version // See: http://msdn.microsoft.com/en-us/library/windows/desktop/dn302074.aspx major_equal = VerSetConditionMask(0, VER_MAJORVERSION, VER_EQUAL); for (major = vi.dwMajorVersion; major <= 9; major++) { memset(&vi2, 0, sizeof(vi2)); vi2.dwOSVersionInfoSize = sizeof(vi2); vi2.dwMajorVersion = major; if (!VerifyVersionInfoA(&vi2, VER_MAJORVERSION, major_equal)) continue; if (vi.dwMajorVersion < major) { vi.dwMajorVersion = major; vi.dwMinorVersion = 0; } minor_equal = VerSetConditionMask(0, VER_MINORVERSION, VER_EQUAL); for (minor = vi.dwMinorVersion; minor <= 9; minor++) { memset(&vi2, 0, sizeof(vi2)); vi2.dwOSVersionInfoSize = sizeof(vi2); vi2.dwMinorVersion = minor; if (!VerifyVersionInfoA(&vi2, VER_MINORVERSION, minor_equal)) continue; vi.dwMinorVersion = minor; break; } break; } } if (vi.dwMajorVersion <= 0xf && vi.dwMinorVersion <= 0xf) { ws = (vi.wProductType <= VER_NT_WORKSTATION); windows_version = vi.dwMajorVersion << 4 | vi.dwMinorVersion; switch (windows_version) { case 0x50: w = "2000"; break; case 0x51: w = "XP"; break; case 0x52: w = ("2003"); break; case 0x60: w = (ws?"Vista":"2008"); break; case 0x61: w = (ws?"7":"2008_R2"); break; case 0x62: w = (ws?"8":"2012"); break; case 0x63: w = (ws?"8.1":"2012_R2"); break; case 0x64: w = (ws?"10":"2015"); break; default: if (windows_version < 0x50) windows_version = WINDOWS_UNSUPPORTED; else w = "11 or later"; break; } } } if (is_x64()) w64 = "64-bit"; vptr = &windows_version_str[sizeof("Windows ") - 1]; vlen = sizeof(windows_version_str) - sizeof("Windows ") - 1; if (!w) safe_sprintf(vptr, vlen, "%s %u.%u %s", (vi.dwPlatformId==VER_PLATFORM_WIN32_NT?"NT":"??"), (unsigned)vi.dwMajorVersion, (unsigned)vi.dwMinorVersion, w64); else if (vi.wServicePackMinor) safe_sprintf(vptr, vlen, "%s SP%u.%u %s", w, vi.wServicePackMajor, vi.wServicePackMinor, w64); else if (vi.wServicePackMajor) safe_sprintf(vptr, vlen, "%s SP%u %s", w, vi.wServicePackMajor, w64); else safe_sprintf(vptr, vlen, "%s %s", w, w64); } /* * init: libusb backend init function * * This function enumerates the HCDs (Host Controller Drivers) and populates our private HCD list * In our implementation, we equate Windows' "HCD" to libusb's "bus". Note that bus is zero indexed. * HCDs are not expected to change after init (might not hold true for hot pluggable USB PCI card?) */ static int windows_init(struct libusb_context *ctx) { int i, r = LIBUSB_ERROR_OTHER; DWORD_PTR affinity, dummy; HANDLE event = NULL; HANDLE semaphore; LARGE_INTEGER li_frequency; char sem_name[11+1+8]; // strlen(libusb_init)+'\0'+(32-bit hex PID) sprintf(sem_name, "libusb_init%08X", (unsigned int)GetCurrentProcessId()&0xFFFFFFFF); semaphore = CreateSemaphoreA(NULL, 1, 1, sem_name); if (semaphore == NULL) { usbi_err(ctx, "could not create semaphore: %s", windows_error_str(0)); return LIBUSB_ERROR_NO_MEM; } // A successful wait brings our semaphore count to 0 (unsignaled) // => any concurent wait stalls until the semaphore's release if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) { usbi_err(ctx, "failure to access semaphore: %s", windows_error_str(0)); CloseHandle(semaphore); return LIBUSB_ERROR_NO_MEM; } // NB: concurrent usage supposes that init calls are equally balanced with // exit calls. If init is called more than exit, we will not exit properly if ( ++concurrent_usage == 0 ) { // First init? get_windows_version(); usbi_dbg(windows_version_str); if (windows_version == WINDOWS_UNSUPPORTED) { usbi_err(ctx, "This version of Windows is NOT supported"); r = LIBUSB_ERROR_NOT_SUPPORTED; goto init_exit; } // We need a lock for proper auto-release usbi_mutex_init(&autoclaim_lock, NULL); // Initialize pollable file descriptors init_polling(); // Load DLL imports if (init_dlls() != LIBUSB_SUCCESS) { usbi_err(ctx, "could not resolve DLL functions"); goto init_exit; } // Initialize the low level APIs (we don't care about errors at this stage) for (i=0; inum_configurations = 1; priv->dev_descriptor.bLength = sizeof(USB_DEVICE_DESCRIPTOR); priv->dev_descriptor.bDescriptorType = USB_DEVICE_DESCRIPTOR_TYPE; priv->dev_descriptor.bNumConfigurations = 1; priv->active_config = 1; if (priv->parent_dev == NULL) { usbi_err(ctx, "program assertion failed - HCD hub has no parent"); return LIBUSB_ERROR_NO_DEVICE; } parent_priv = _device_priv(priv->parent_dev); if (sscanf(parent_priv->path, "\\\\.\\PCI#VEN_%04x&DEV_%04x%*s", &vid, &pid) == 2) { priv->dev_descriptor.idVendor = (uint16_t)vid; priv->dev_descriptor.idProduct = (uint16_t)pid; } else { usbi_warn(ctx, "could not infer VID/PID of HCD hub from '%s'", parent_priv->path); priv->dev_descriptor.idVendor = 0x1d6b; // Linux Foundation root hub priv->dev_descriptor.idProduct = 1; } return LIBUSB_SUCCESS; } /* * fetch and cache all the config descriptors through I/O */ static int cache_config_descriptors(struct libusb_device *dev, HANDLE hub_handle, char* device_id) { DWORD size, ret_size; struct libusb_context *ctx = DEVICE_CTX(dev); struct windows_device_priv *priv = _device_priv(dev); int r; uint8_t i; USB_CONFIGURATION_DESCRIPTOR_SHORT cd_buf_short; // dummy request PUSB_DESCRIPTOR_REQUEST cd_buf_actual = NULL; // actual request PUSB_CONFIGURATION_DESCRIPTOR cd_data = NULL; if (dev->num_configurations == 0) return LIBUSB_ERROR_INVALID_PARAM; priv->config_descriptor = (unsigned char**) calloc(dev->num_configurations, sizeof(unsigned char*)); if (priv->config_descriptor == NULL) return LIBUSB_ERROR_NO_MEM; for (i=0; inum_configurations; i++) priv->config_descriptor[i] = NULL; for (i=0, r=LIBUSB_SUCCESS; ; i++) { // safe loop: release all dynamic resources safe_free(cd_buf_actual); // safe loop: end of loop condition if ((i >= dev->num_configurations) || (r != LIBUSB_SUCCESS)) break; size = sizeof(USB_CONFIGURATION_DESCRIPTOR_SHORT); memset(&cd_buf_short, 0, size); cd_buf_short.req.ConnectionIndex = (ULONG)priv->port; cd_buf_short.req.SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN; cd_buf_short.req.SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR; cd_buf_short.req.SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i; cd_buf_short.req.SetupPacket.wIndex = 0; cd_buf_short.req.SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST)); // Dummy call to get the required data size. Initial failures are reported as info rather // than error as they can occur for non-penalizing situations, such as with some hubs. // coverity[tainted_data_argument] if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, &cd_buf_short, size, &cd_buf_short, size, &ret_size, NULL)) { usbi_info(ctx, "could not access configuration descriptor (dummy) for '%s': %s", device_id, windows_error_str(0)); LOOP_BREAK(LIBUSB_ERROR_IO); } if ((ret_size != size) || (cd_buf_short.data.wTotalLength < sizeof(USB_CONFIGURATION_DESCRIPTOR))) { usbi_info(ctx, "unexpected configuration descriptor size (dummy) for '%s'.", device_id); LOOP_BREAK(LIBUSB_ERROR_IO); } size = sizeof(USB_DESCRIPTOR_REQUEST) + cd_buf_short.data.wTotalLength; if ((cd_buf_actual = (PUSB_DESCRIPTOR_REQUEST) calloc(1, size)) == NULL) { usbi_err(ctx, "could not allocate configuration descriptor buffer for '%s'.", device_id); LOOP_BREAK(LIBUSB_ERROR_NO_MEM); } memset(cd_buf_actual, 0, size); // Actual call cd_buf_actual->ConnectionIndex = (ULONG)priv->port; cd_buf_actual->SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN; cd_buf_actual->SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR; cd_buf_actual->SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i; cd_buf_actual->SetupPacket.wIndex = 0; cd_buf_actual->SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST)); if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, cd_buf_actual, size, cd_buf_actual, size, &ret_size, NULL)) { usbi_err(ctx, "could not access configuration descriptor (actual) for '%s': %s", device_id, windows_error_str(0)); LOOP_BREAK(LIBUSB_ERROR_IO); } cd_data = (PUSB_CONFIGURATION_DESCRIPTOR)((UCHAR*)cd_buf_actual+sizeof(USB_DESCRIPTOR_REQUEST)); if ((size != ret_size) || (cd_data->wTotalLength != cd_buf_short.data.wTotalLength)) { usbi_err(ctx, "unexpected configuration descriptor size (actual) for '%s'.", device_id); LOOP_BREAK(LIBUSB_ERROR_IO); } if (cd_data->bDescriptorType != USB_CONFIGURATION_DESCRIPTOR_TYPE) { usbi_err(ctx, "not a configuration descriptor for '%s'", device_id); LOOP_BREAK(LIBUSB_ERROR_IO); } usbi_dbg("cached config descriptor %d (bConfigurationValue=%d, %d bytes)", i, cd_data->bConfigurationValue, cd_data->wTotalLength); // Cache the descriptor priv->config_descriptor[i] = (unsigned char*) malloc(cd_data->wTotalLength); if (priv->config_descriptor[i] == NULL) LOOP_BREAK(LIBUSB_ERROR_NO_MEM); memcpy(priv->config_descriptor[i], cd_data, cd_data->wTotalLength); } return LIBUSB_SUCCESS; } /* * Populate a libusb device structure */ static int init_device(struct libusb_device* dev, struct libusb_device* parent_dev, uint8_t port_number, char* device_id, DWORD devinst) { HANDLE handle; DWORD size; USB_NODE_CONNECTION_INFORMATION_EX conn_info; USB_NODE_CONNECTION_INFORMATION_EX_V2 conn_info_v2; struct windows_device_priv *priv, *parent_priv; struct libusb_context *ctx; struct libusb_device* tmp_dev; unsigned long tmp_id; unsigned i; if ((dev == NULL) || (parent_dev == NULL)) { return LIBUSB_ERROR_NOT_FOUND; } ctx = DEVICE_CTX(dev); priv = _device_priv(dev); parent_priv = _device_priv(parent_dev); if (parent_priv->apib->id != USB_API_HUB) { usbi_warn(ctx, "parent for device '%s' is not a hub", device_id); return LIBUSB_ERROR_NOT_FOUND; } // It is possible for the parent hub not to have been initialized yet // If that's the case, lookup the ancestors to set the bus number if (parent_dev->bus_number == 0) { for (i=2; ; i++) { tmp_id = get_ancestor_session_id(devinst, i); if (tmp_id == 0) break; tmp_dev = usbi_get_device_by_session_id(ctx, tmp_id); if (tmp_dev == NULL) continue; if (tmp_dev->bus_number != 0) { usbi_dbg("got bus number from ancestor #%d", i); parent_dev->bus_number = tmp_dev->bus_number; libusb_unref_device(tmp_dev); break; } libusb_unref_device(tmp_dev); } } if (parent_dev->bus_number == 0) { usbi_err(ctx, "program assertion failed: unable to find ancestor bus number for '%s'", device_id); return LIBUSB_ERROR_NOT_FOUND; } dev->bus_number = parent_dev->bus_number; priv->port = port_number; dev->port_number = port_number; priv->depth = parent_priv->depth + 1; priv->parent_dev = parent_dev; dev->parent_dev = parent_dev; // If the device address is already set, we can stop here if (dev->device_address != 0) { return LIBUSB_SUCCESS; } memset(&conn_info, 0, sizeof(conn_info)); if (priv->depth != 0) { // Not a HCD hub handle = CreateFileA(parent_priv->path, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); if (handle == INVALID_HANDLE_VALUE) { usbi_warn(ctx, "could not open hub %s: %s", parent_priv->path, windows_error_str(0)); return LIBUSB_ERROR_ACCESS; } size = sizeof(conn_info); conn_info.ConnectionIndex = (ULONG)port_number; // coverity[tainted_data_argument] if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, &conn_info, size, &conn_info, size, &size, NULL)) { usbi_warn(ctx, "could not get node connection information for device '%s': %s", device_id, windows_error_str(0)); safe_closehandle(handle); return LIBUSB_ERROR_NO_DEVICE; } if (conn_info.ConnectionStatus == NoDeviceConnected) { usbi_err(ctx, "device '%s' is no longer connected!", device_id); safe_closehandle(handle); return LIBUSB_ERROR_NO_DEVICE; } memcpy(&priv->dev_descriptor, &(conn_info.DeviceDescriptor), sizeof(USB_DEVICE_DESCRIPTOR)); dev->num_configurations = priv->dev_descriptor.bNumConfigurations; priv->active_config = conn_info.CurrentConfigurationValue; usbi_dbg("found %d configurations (active conf: %d)", dev->num_configurations, priv->active_config); // If we can't read the config descriptors, just set the number of confs to zero if (cache_config_descriptors(dev, handle, device_id) != LIBUSB_SUCCESS) { dev->num_configurations = 0; priv->dev_descriptor.bNumConfigurations = 0; } // In their great wisdom, Microsoft decided to BREAK the USB speed report between Windows 7 and Windows 8 if (windows_version >= WINDOWS_8) { memset(&conn_info_v2, 0, sizeof(conn_info_v2)); size = sizeof(conn_info_v2); conn_info_v2.ConnectionIndex = (ULONG)port_number; conn_info_v2.Length = size; conn_info_v2.SupportedUsbProtocols.Usb300 = 1; if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX_V2, &conn_info_v2, size, &conn_info_v2, size, &size, NULL)) { usbi_warn(ctx, "could not get node connection information (V2) for device '%s': %s", device_id, windows_error_str(0)); } else if (conn_info_v2.Flags.DeviceIsOperatingAtSuperSpeedOrHigher) { conn_info.Speed = 3; } } safe_closehandle(handle); if (conn_info.DeviceAddress > UINT8_MAX) { usbi_err(ctx, "program assertion failed: device address overflow"); } dev->device_address = (uint8_t)conn_info.DeviceAddress + 1; if (dev->device_address == 1) { usbi_err(ctx, "program assertion failed: device address collision with root hub"); } switch (conn_info.Speed) { case 0: dev->speed = LIBUSB_SPEED_LOW; break; case 1: dev->speed = LIBUSB_SPEED_FULL; break; case 2: dev->speed = LIBUSB_SPEED_HIGH; break; case 3: dev->speed = LIBUSB_SPEED_SUPER; break; default: usbi_warn(ctx, "Got unknown device speed %d", conn_info.Speed); break; } } else { dev->device_address = 1; // root hubs are set to use device number 1 force_hcd_device_descriptor(dev); } usbi_sanitize_device(dev); usbi_dbg("(bus: %d, addr: %d, depth: %d, port: %d): '%s'", dev->bus_number, dev->device_address, priv->depth, priv->port, device_id); return LIBUSB_SUCCESS; } // Returns the api type, or 0 if not found/unsupported static void get_api_type(struct libusb_context *ctx, HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, int *api, int *sub_api) { // Precedence for filter drivers vs driver is in the order of this array struct driver_lookup lookup[3] = { {"\0\0", SPDRP_SERVICE, "driver"}, {"\0\0", SPDRP_UPPERFILTERS, "upper filter driver"}, {"\0\0", SPDRP_LOWERFILTERS, "lower filter driver"} }; DWORD size, reg_type; unsigned k, l; int i, j; *api = USB_API_UNSUPPORTED; *sub_api = SUB_API_NOTSET; // Check the service & filter names to know the API we should use for (k=0; k<3; k++) { if (pSetupDiGetDeviceRegistryPropertyA(*dev_info, dev_info_data, lookup[k].reg_prop, ®_type, (BYTE*)lookup[k].list, MAX_KEY_LENGTH, &size)) { // Turn the REG_SZ SPDRP_SERVICE into REG_MULTI_SZ if (lookup[k].reg_prop == SPDRP_SERVICE) { // our buffers are MAX_KEY_LENGTH+1 so we can overflow if needed lookup[k].list[safe_strlen(lookup[k].list)+1] = 0; } // MULTI_SZ is a pain to work with. Turn it into something much more manageable // NB: none of the driver names we check against contain LIST_SEPARATOR, // (currently ';'), so even if an unsuported one does, it's not an issue for (l=0; (lookup[k].list[l] != 0) || (lookup[k].list[l+1] != 0); l++) { if (lookup[k].list[l] == 0) { lookup[k].list[l] = LIST_SEPARATOR; } } usbi_dbg("%s(s): %s", lookup[k].designation, lookup[k].list); } else { if (GetLastError() != ERROR_INVALID_DATA) { usbi_dbg("could not access %s: %s", lookup[k].designation, windows_error_str(0)); } lookup[k].list[0] = 0; } } for (i=1; i= 0) { usbi_dbg("matched %s name against %s", lookup[k].designation, (i!=USB_API_WINUSBX)?usb_api_backend[i].designation:sub_api_name[j]); *api = i; *sub_api = j; return; } } } } static int set_composite_interface(struct libusb_context* ctx, struct libusb_device* dev, char* dev_interface_path, char* device_id, int api, int sub_api) { unsigned i; struct windows_device_priv *priv = _device_priv(dev); int interface_number; if (priv->apib->id != USB_API_COMPOSITE) { usbi_err(ctx, "program assertion failed: '%s' is not composite", device_id); return LIBUSB_ERROR_NO_DEVICE; } // Because MI_## are not necessarily in sequential order (some composite // devices will have only MI_00 & MI_03 for instance), we retrieve the actual // interface number from the path's MI value interface_number = 0; for (i=0; device_id[i] != 0; ) { if ( (device_id[i++] == 'M') && (device_id[i++] == 'I') && (device_id[i++] == '_') ) { interface_number = (device_id[i++] - '0')*10; interface_number += device_id[i] - '0'; break; } } if (device_id[i] == 0) { usbi_warn(ctx, "failure to read interface number for %s. Using default value %d", device_id, interface_number); } if (priv->usb_interface[interface_number].path != NULL) { if (api == USB_API_HID) { // HID devices can have multiple collections (COL##) for each MI_## interface usbi_dbg("interface[%d] already set - ignoring HID collection: %s", interface_number, device_id); return LIBUSB_ERROR_ACCESS; } // In other cases, just use the latest data safe_free(priv->usb_interface[interface_number].path); } usbi_dbg("interface[%d] = %s", interface_number, dev_interface_path); priv->usb_interface[interface_number].path = dev_interface_path; priv->usb_interface[interface_number].apib = &usb_api_backend[api]; priv->usb_interface[interface_number].sub_api = sub_api; if ((api == USB_API_HID) && (priv->hid == NULL)) { priv->hid = (struct hid_device_priv*) calloc(1, sizeof(struct hid_device_priv)); if (priv->hid == NULL) return LIBUSB_ERROR_NO_MEM; } return LIBUSB_SUCCESS; } static int set_hid_interface(struct libusb_context* ctx, struct libusb_device* dev, char* dev_interface_path) { int i; struct windows_device_priv *priv = _device_priv(dev); if (priv->hid == NULL) { usbi_err(ctx, "program assertion failed: parent is not HID"); return LIBUSB_ERROR_NO_DEVICE; } if (priv->hid->nb_interfaces == USB_MAXINTERFACES) { usbi_err(ctx, "program assertion failed: max USB interfaces reached for HID device"); return LIBUSB_ERROR_NO_DEVICE; } for (i=0; ihid->nb_interfaces; i++) { if (safe_strcmp(priv->usb_interface[i].path, dev_interface_path) == 0) { usbi_dbg("interface[%d] already set to %s", i, dev_interface_path); return LIBUSB_SUCCESS; } } priv->usb_interface[priv->hid->nb_interfaces].path = dev_interface_path; priv->usb_interface[priv->hid->nb_interfaces].apib = &usb_api_backend[USB_API_HID]; usbi_dbg("interface[%d] = %s", priv->hid->nb_interfaces, dev_interface_path); priv->hid->nb_interfaces++; return LIBUSB_SUCCESS; } /* * get_device_list: libusb backend device enumeration function */ static int windows_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs) { struct discovered_devs *discdevs; HDEVINFO dev_info = { 0 }; const char* usb_class[] = {"USB", "NUSB3", "IUSB3"}; SP_DEVINFO_DATA dev_info_data = { 0 }; SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL; GUID hid_guid; #define MAX_ENUM_GUIDS 64 const GUID* guid[MAX_ENUM_GUIDS]; #define HCD_PASS 0 #define HUB_PASS 1 #define GEN_PASS 2 #define DEV_PASS 3 #define HID_PASS 4 int r = LIBUSB_SUCCESS; int api, sub_api; size_t class_index = 0; unsigned int nb_guids, pass, i, j, ancestor; char path[MAX_PATH_LENGTH]; char strbuf[MAX_PATH_LENGTH]; struct libusb_device *dev, *parent_dev; struct windows_device_priv *priv, *parent_priv; char* dev_interface_path = NULL; char* dev_id_path = NULL; unsigned long session_id; DWORD size, reg_type, port_nr, install_state; HKEY key; WCHAR guid_string_w[MAX_GUID_STRING_LENGTH]; GUID* if_guid; LONG s; // Keep a list of newly allocated devs to unref libusb_device** unref_list; unsigned int unref_size = 64; unsigned int unref_cur = 0; // PASS 1 : (re)enumerate HCDs (allows for HCD hotplug) // PASS 2 : (re)enumerate HUBS // PASS 3 : (re)enumerate generic USB devices (including driverless) // and list additional USB device interface GUIDs to explore // PASS 4 : (re)enumerate master USB devices that have a device interface // PASS 5+: (re)enumerate device interfaced GUIDs (including HID) and // set the device interfaces. // Init the GUID table guid[HCD_PASS] = &GUID_DEVINTERFACE_USB_HOST_CONTROLLER; guid[HUB_PASS] = &GUID_DEVINTERFACE_USB_HUB; guid[GEN_PASS] = NULL; guid[DEV_PASS] = &GUID_DEVINTERFACE_USB_DEVICE; HidD_GetHidGuid(&hid_guid); guid[HID_PASS] = &hid_guid; nb_guids = HID_PASS+1; unref_list = (libusb_device**) calloc(unref_size, sizeof(libusb_device*)); if (unref_list == NULL) { return LIBUSB_ERROR_NO_MEM; } for (pass = 0; ((pass < nb_guids) && (r == LIBUSB_SUCCESS)); pass++) { //#define ENUM_DEBUG #ifdef ENUM_DEBUG const char *passname[] = { "HCD", "HUB", "GEN", "DEV", "HID", "EXT" }; usbi_dbg("#### PROCESSING %ss %s", passname[(pass<=HID_PASS)?pass:HID_PASS+1], (pass!=GEN_PASS)?guid_to_string(guid[pass]):""); #endif for (i = 0; ; i++) { // safe loop: free up any (unprotected) dynamic resource // NB: this is always executed before breaking the loop safe_free(dev_interface_details); safe_free(dev_interface_path); safe_free(dev_id_path); priv = parent_priv = NULL; dev = parent_dev = NULL; // Safe loop: end of loop conditions if (r != LIBUSB_SUCCESS) { break; } if ((pass == HCD_PASS) && (i == UINT8_MAX)) { usbi_warn(ctx, "program assertion failed - found more than %d buses, skipping the rest.", UINT8_MAX); break; } if (pass != GEN_PASS) { // Except for GEN, all passes deal with device interfaces dev_interface_details = get_interface_details(ctx, &dev_info, &dev_info_data, guid[pass], i); if (dev_interface_details == NULL) { break; } else { dev_interface_path = sanitize_path(dev_interface_details->DevicePath); if (dev_interface_path == NULL) { usbi_warn(ctx, "could not sanitize device interface path for '%s'", dev_interface_details->DevicePath); continue; } } } else { // Workaround for a Nec/Renesas USB 3.0 driver bug where root hubs are // being listed under the "NUSB3" PnP Symbolic Name rather than "USB". // The Intel USB 3.0 driver behaves similar, but uses "IUSB3" for (; class_index < ARRAYSIZE(usb_class); class_index++) { if (get_devinfo_data(ctx, &dev_info, &dev_info_data, usb_class[class_index], i)) break; i = 0; } if (class_index >= ARRAYSIZE(usb_class)) break; } // Read the Device ID path. This is what we'll use as UID // Note that if the device is plugged in a different port or hub, the Device ID changes if (CM_Get_Device_IDA(dev_info_data.DevInst, path, sizeof(path), 0) != CR_SUCCESS) { usbi_warn(ctx, "could not read the device id path for devinst %X, skipping", dev_info_data.DevInst); continue; } dev_id_path = sanitize_path(path); if (dev_id_path == NULL) { usbi_warn(ctx, "could not sanitize device id path for devinst %X, skipping", dev_info_data.DevInst); continue; } #ifdef ENUM_DEBUG usbi_dbg("PRO: %s", dev_id_path); #endif // The SPDRP_ADDRESS for USB devices is the device port number on the hub port_nr = 0; if ((pass >= HUB_PASS) && (pass <= GEN_PASS)) { if ( (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_ADDRESS, ®_type, (BYTE*)&port_nr, 4, &size)) || (size != 4) ) { usbi_warn(ctx, "could not retrieve port number for device '%s', skipping: %s", dev_id_path, windows_error_str(0)); continue; } } // Set API to use or get additional data from generic pass api = USB_API_UNSUPPORTED; sub_api = SUB_API_NOTSET; switch (pass) { case HCD_PASS: break; case GEN_PASS: // We use the GEN pass to detect driverless devices... size = sizeof(strbuf); if (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_DRIVER, ®_type, (BYTE*)strbuf, size, &size)) { usbi_info(ctx, "The following device has no driver: '%s'", dev_id_path); usbi_info(ctx, "libusb will not be able to access it."); } // ...and to add the additional device interface GUIDs key = pSetupDiOpenDevRegKey(dev_info, &dev_info_data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ); if (key != INVALID_HANDLE_VALUE) { size = sizeof(guid_string_w); s = pRegQueryValueExW(key, L"DeviceInterfaceGUIDs", NULL, ®_type, (BYTE*)guid_string_w, &size); pRegCloseKey(key); if (s == ERROR_SUCCESS) { if (nb_guids >= MAX_ENUM_GUIDS) { // If this assert is ever reported, grow a GUID table dynamically usbi_err(ctx, "program assertion failed: too many GUIDs"); LOOP_BREAK(LIBUSB_ERROR_OVERFLOW); } if_guid = (GUID*) calloc(1, sizeof(GUID)); if (if_guid == NULL) { usbi_err(ctx, "could not calloc for if_guid: not enough memory"); LOOP_BREAK(LIBUSB_ERROR_NO_MEM); } pCLSIDFromString(guid_string_w, if_guid); guid[nb_guids++] = if_guid; usbi_dbg("extra GUID: %s", guid_to_string(if_guid)); } } break; case HID_PASS: api = USB_API_HID; break; default: // Get the API type (after checking that the driver installation is OK) if ( (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_INSTALL_STATE, ®_type, (BYTE*)&install_state, 4, &size)) || (size != 4) ){ usbi_warn(ctx, "could not detect installation state of driver for '%s': %s", dev_id_path, windows_error_str(0)); } else if (install_state != 0) { usbi_warn(ctx, "driver for device '%s' is reporting an issue (code: %d) - skipping", dev_id_path, install_state); continue; } get_api_type(ctx, &dev_info, &dev_info_data, &api, &sub_api); break; } // Find parent device (for the passes that need it) switch (pass) { case HCD_PASS: case DEV_PASS: case HUB_PASS: break; default: // Go through the ancestors until we see a face we recognize parent_dev = NULL; for (ancestor = 1; parent_dev == NULL; ancestor++) { session_id = get_ancestor_session_id(dev_info_data.DevInst, ancestor); if (session_id == 0) { break; } parent_dev = usbi_get_device_by_session_id(ctx, session_id); } if (parent_dev == NULL) { usbi_dbg("unlisted ancestor for '%s' (non USB HID, newly connected, etc.) - ignoring", dev_id_path); continue; } parent_priv = _device_priv(parent_dev); // virtual USB devices are also listed during GEN - don't process these yet if ( (pass == GEN_PASS) && (parent_priv->apib->id != USB_API_HUB) ) { libusb_unref_device(parent_dev); continue; } break; } // Create new or match existing device, using the (hashed) device_id as session id if (pass <= DEV_PASS) { // For subsequent passes, we'll lookup the parent // These are the passes that create "new" devices session_id = htab_hash(dev_id_path); dev = usbi_get_device_by_session_id(ctx, session_id); if (dev == NULL) { if (pass == DEV_PASS) { // This can occur if the OS only reports a newly plugged device after we started enum usbi_warn(ctx, "'%s' was only detected in late pass (newly connected device?)" " - ignoring", dev_id_path); continue; } usbi_dbg("allocating new device for session [%X]", session_id); if ((dev = usbi_alloc_device(ctx, session_id)) == NULL) { LOOP_BREAK(LIBUSB_ERROR_NO_MEM); } windows_device_priv_init(dev); } else { usbi_dbg("found existing device for session [%X] (%d.%d)", session_id, dev->bus_number, dev->device_address); } // Keep track of devices that need unref unref_list[unref_cur++] = dev; if (unref_cur >= unref_size) { unref_size += 64; unref_list = usbi_reallocf(unref_list, unref_size*sizeof(libusb_device*)); if (unref_list == NULL) { usbi_err(ctx, "could not realloc list for unref - aborting."); LOOP_BREAK(LIBUSB_ERROR_NO_MEM); } } priv = _device_priv(dev); } // Setup device switch (pass) { case HCD_PASS: dev->bus_number = (uint8_t)(i + 1); // bus 0 is reserved for disconnected dev->device_address = 0; dev->num_configurations = 0; priv->apib = &usb_api_backend[USB_API_HUB]; priv->sub_api = SUB_API_NOTSET; priv->depth = UINT8_MAX; // Overflow to 0 for HCD Hubs priv->path = dev_interface_path; dev_interface_path = NULL; break; case HUB_PASS: case DEV_PASS: // If the device has already been setup, don't do it again if (priv->path != NULL) break; // Take care of API initialization priv->path = dev_interface_path; dev_interface_path = NULL; priv->apib = &usb_api_backend[api]; priv->sub_api = sub_api; switch(api) { case USB_API_COMPOSITE: case USB_API_HUB: break; case USB_API_HID: priv->hid = calloc(1, sizeof(struct hid_device_priv)); if (priv->hid == NULL) { LOOP_BREAK(LIBUSB_ERROR_NO_MEM); } priv->hid->nb_interfaces = 0; break; default: // For other devices, the first interface is the same as the device priv->usb_interface[0].path = (char*) calloc(safe_strlen(priv->path)+1, 1); if (priv->usb_interface[0].path != NULL) { safe_strcpy(priv->usb_interface[0].path, safe_strlen(priv->path)+1, priv->path); } else { usbi_warn(ctx, "could not duplicate interface path '%s'", priv->path); } // The following is needed if we want API calls to work for both simple // and composite devices. for(j=0; jusb_interface[j].apib = &usb_api_backend[api]; } break; } break; case GEN_PASS: r = init_device(dev, parent_dev, (uint8_t)port_nr, dev_id_path, dev_info_data.DevInst); if (r == LIBUSB_SUCCESS) { // Append device to the list of discovered devices discdevs = discovered_devs_append(*_discdevs, dev); if (!discdevs) { LOOP_BREAK(LIBUSB_ERROR_NO_MEM); } *_discdevs = discdevs; } else if (r == LIBUSB_ERROR_NO_DEVICE) { // This can occur if the device was disconnected but Windows hasn't // refreshed its enumeration yet - in that case, we ignore the device r = LIBUSB_SUCCESS; } break; default: // HID_PASS and later if (parent_priv->apib->id == USB_API_HID) { usbi_dbg("setting HID interface for [%lX]:", parent_dev->session_data); r = set_hid_interface(ctx, parent_dev, dev_interface_path); if (r != LIBUSB_SUCCESS) LOOP_BREAK(r); dev_interface_path = NULL; } else if (parent_priv->apib->id == USB_API_COMPOSITE) { usbi_dbg("setting composite interface for [%lX]:", parent_dev->session_data); switch (set_composite_interface(ctx, parent_dev, dev_interface_path, dev_id_path, api, sub_api)) { case LIBUSB_SUCCESS: dev_interface_path = NULL; break; case LIBUSB_ERROR_ACCESS: // interface has already been set => make sure dev_interface_path is freed then break; default: LOOP_BREAK(r); break; } } libusb_unref_device(parent_dev); break; } } } // Free any additional GUIDs for (pass = HID_PASS+1; pass < nb_guids; pass++) { safe_free(guid[pass]); } // Unref newly allocated devs if (unref_list != NULL) { for (i=0; i any concurent wait stalls until the semaphore release if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) { CloseHandle(semaphore); return; } // Only works if exits and inits are balanced exactly if (--concurrent_usage < 0) { // Last exit for (i=0; idev_descriptor), DEVICE_DESC_LENGTH); *host_endian = 0; return LIBUSB_SUCCESS; } static int windows_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) { struct windows_device_priv *priv = _device_priv(dev); PUSB_CONFIGURATION_DESCRIPTOR config_header; size_t size; // config index is zero based if (config_index >= dev->num_configurations) return LIBUSB_ERROR_INVALID_PARAM; if ((priv->config_descriptor == NULL) || (priv->config_descriptor[config_index] == NULL)) return LIBUSB_ERROR_NOT_FOUND; config_header = (PUSB_CONFIGURATION_DESCRIPTOR)priv->config_descriptor[config_index]; size = MIN(config_header->wTotalLength, len); memcpy(buffer, priv->config_descriptor[config_index], size); *host_endian = 0; return (int)size; } /* * return the cached copy of the active config descriptor */ static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) { struct windows_device_priv *priv = _device_priv(dev); if (priv->active_config == 0) return LIBUSB_ERROR_NOT_FOUND; // config index is zero based return windows_get_config_descriptor(dev, (uint8_t)(priv->active_config-1), buffer, len, host_endian); } static int windows_open(struct libusb_device_handle *dev_handle) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); if (priv->apib == NULL) { usbi_err(ctx, "program assertion failed - device is not initialized"); return LIBUSB_ERROR_NO_DEVICE; } return priv->apib->open(SUB_API_NOTSET, dev_handle); } static void windows_close(struct libusb_device_handle *dev_handle) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); priv->apib->close(SUB_API_NOTSET, dev_handle); } static int windows_get_configuration(struct libusb_device_handle *dev_handle, int *config) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); if (priv->active_config == 0) { *config = 0; return LIBUSB_ERROR_NOT_FOUND; } *config = priv->active_config; return LIBUSB_SUCCESS; } /* * from http://msdn.microsoft.com/en-us/library/ms793522.aspx: "The port driver * does not currently expose a service that allows higher-level drivers to set * the configuration." */ static int windows_set_configuration(struct libusb_device_handle *dev_handle, int config) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); int r = LIBUSB_SUCCESS; if (config >= USB_MAXCONFIG) return LIBUSB_ERROR_INVALID_PARAM; r = libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_RECIPIENT_DEVICE, LIBUSB_REQUEST_SET_CONFIGURATION, (uint16_t)config, 0, NULL, 0, 1000); if (r == LIBUSB_SUCCESS) { priv->active_config = (uint8_t)config; } return r; } static int windows_claim_interface(struct libusb_device_handle *dev_handle, int iface) { int r = LIBUSB_SUCCESS; struct windows_device_priv *priv = _device_priv(dev_handle->dev); safe_free(priv->usb_interface[iface].endpoint); priv->usb_interface[iface].nb_endpoints= 0; r = priv->apib->claim_interface(SUB_API_NOTSET, dev_handle, iface); if (r == LIBUSB_SUCCESS) { r = windows_assign_endpoints(dev_handle, iface, 0); } return r; } static int windows_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) { int r = LIBUSB_SUCCESS; struct windows_device_priv *priv = _device_priv(dev_handle->dev); safe_free(priv->usb_interface[iface].endpoint); priv->usb_interface[iface].nb_endpoints= 0; r = priv->apib->set_interface_altsetting(SUB_API_NOTSET, dev_handle, iface, altsetting); if (r == LIBUSB_SUCCESS) { r = windows_assign_endpoints(dev_handle, iface, altsetting); } return r; } static int windows_release_interface(struct libusb_device_handle *dev_handle, int iface) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); return priv->apib->release_interface(SUB_API_NOTSET, dev_handle, iface); } static int windows_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); return priv->apib->clear_halt(SUB_API_NOTSET, dev_handle, endpoint); } static int windows_reset_device(struct libusb_device_handle *dev_handle) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); return priv->apib->reset_device(SUB_API_NOTSET, dev_handle); } // The 3 functions below are unlikely to ever get supported on Windows static int windows_kernel_driver_active(struct libusb_device_handle *dev_handle, int iface) { return LIBUSB_ERROR_NOT_SUPPORTED; } static int windows_attach_kernel_driver(struct libusb_device_handle *dev_handle, int iface) { return LIBUSB_ERROR_NOT_SUPPORTED; } static int windows_detach_kernel_driver(struct libusb_device_handle *dev_handle, int iface) { return LIBUSB_ERROR_NOT_SUPPORTED; } static void windows_destroy_device(struct libusb_device *dev) { windows_device_priv_release(dev); } static void windows_clear_transfer_priv(struct usbi_transfer *itransfer) { struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); usbi_free_fd(&transfer_priv->pollable_fd); safe_free(transfer_priv->hid_buffer); // When auto claim is in use, attempt to release the auto-claimed interface auto_release(itransfer); } static int submit_bulk_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); int r; r = priv->apib->submit_bulk_transfer(SUB_API_NOTSET, itransfer); if (r != LIBUSB_SUCCESS) { return r; } usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, (short)(IS_XFERIN(transfer) ? POLLIN : POLLOUT)); return LIBUSB_SUCCESS; } static int submit_iso_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); int r; r = priv->apib->submit_iso_transfer(SUB_API_NOTSET, itransfer); if (r != LIBUSB_SUCCESS) { return r; } usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, (short)(IS_XFERIN(transfer) ? POLLIN : POLLOUT)); return LIBUSB_SUCCESS; } static int submit_control_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); int r; r = priv->apib->submit_control_transfer(SUB_API_NOTSET, itransfer); if (r != LIBUSB_SUCCESS) { return r; } usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, POLLIN); return LIBUSB_SUCCESS; } static int windows_submit_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: return submit_control_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: if (IS_XFEROUT(transfer) && transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) return LIBUSB_ERROR_NOT_SUPPORTED; return submit_bulk_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: return submit_iso_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_BULK_STREAM: return LIBUSB_ERROR_NOT_SUPPORTED; default: usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); return LIBUSB_ERROR_INVALID_PARAM; } } static int windows_abort_control(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); return priv->apib->abort_control(SUB_API_NOTSET, itransfer); } static int windows_abort_transfers(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); return priv->apib->abort_transfers(SUB_API_NOTSET, itransfer); } static int windows_cancel_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: return windows_abort_control(itransfer); case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: return windows_abort_transfers(itransfer); case LIBUSB_TRANSFER_TYPE_BULK_STREAM: return LIBUSB_ERROR_NOT_SUPPORTED; default: usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type); return LIBUSB_ERROR_INVALID_PARAM; } } static void windows_transfer_callback(struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); int status, istatus; usbi_dbg("handling I/O completion with errcode %d, size %d", io_result, io_size); switch(io_result) { case NO_ERROR: status = priv->apib->copy_transfer_data(SUB_API_NOTSET, itransfer, io_size); break; case ERROR_GEN_FAILURE: usbi_dbg("detected endpoint stall"); status = LIBUSB_TRANSFER_STALL; break; case ERROR_SEM_TIMEOUT: usbi_dbg("detected semaphore timeout"); status = LIBUSB_TRANSFER_TIMED_OUT; break; case ERROR_OPERATION_ABORTED: istatus = priv->apib->copy_transfer_data(SUB_API_NOTSET, itransfer, io_size); if (istatus != LIBUSB_TRANSFER_COMPLETED) { usbi_dbg("Failed to copy partial data in aborted operation: %d", istatus); } if (itransfer->flags & USBI_TRANSFER_TIMED_OUT) { usbi_dbg("detected timeout"); status = LIBUSB_TRANSFER_TIMED_OUT; } else { usbi_dbg("detected operation aborted"); status = LIBUSB_TRANSFER_CANCELLED; } break; default: usbi_err(ITRANSFER_CTX(itransfer), "detected I/O error %d: %s", io_result, windows_error_str(io_result)); status = LIBUSB_TRANSFER_ERROR; break; } windows_clear_transfer_priv(itransfer); // Cancel polling usbi_handle_transfer_completion(itransfer, (enum libusb_transfer_status)status); } static void windows_handle_callback (struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: windows_transfer_callback (itransfer, io_result, io_size); break; case LIBUSB_TRANSFER_TYPE_BULK_STREAM: usbi_warn(ITRANSFER_CTX(itransfer), "bulk stream transfers are not yet supported on this platform"); break; default: usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type); } } static int windows_handle_events(struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready) { struct windows_transfer_priv* transfer_priv = NULL; POLL_NFDS_TYPE i = 0; bool found; struct usbi_transfer *transfer; DWORD io_size, io_result; usbi_mutex_lock(&ctx->open_devs_lock); for (i = 0; i < nfds && num_ready > 0; i++) { usbi_dbg("checking fd %d with revents = %04x", fds[i].fd, fds[i].revents); if (!fds[i].revents) { continue; } num_ready--; // Because a Windows OVERLAPPED is used for poll emulation, // a pollable fd is created and stored with each transfer usbi_mutex_lock(&ctx->flying_transfers_lock); found = false; list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) { transfer_priv = usbi_transfer_get_os_priv(transfer); if (transfer_priv->pollable_fd.fd == fds[i].fd) { found = true; break; } } usbi_mutex_unlock(&ctx->flying_transfers_lock); if (found) { // Handle async requests that completed synchronously first if (HasOverlappedIoCompletedSync(transfer_priv->pollable_fd.overlapped)) { io_result = NO_ERROR; io_size = (DWORD)transfer_priv->pollable_fd.overlapped->InternalHigh; // Regular async overlapped } else if (GetOverlappedResult(transfer_priv->pollable_fd.handle, transfer_priv->pollable_fd.overlapped, &io_size, false)) { io_result = NO_ERROR; } else { io_result = GetLastError(); } usbi_remove_pollfd(ctx, transfer_priv->pollable_fd.fd); // let handle_callback free the event using the transfer wfd // If you don't use the transfer wfd, you run a risk of trying to free a // newly allocated wfd that took the place of the one from the transfer. windows_handle_callback(transfer, io_result, io_size); } else { usbi_mutex_unlock(&ctx->open_devs_lock); usbi_err(ctx, "could not find a matching transfer for fd %x", fds[i]); return LIBUSB_ERROR_NOT_FOUND; } } usbi_mutex_unlock(&ctx->open_devs_lock); return LIBUSB_SUCCESS; } /* * Monotonic and real time functions */ unsigned __stdcall windows_clock_gettime_threaded(void* param) { struct timer_request *request; LARGE_INTEGER hires_counter; MSG msg; // The following call will create this thread's message queue // See https://msdn.microsoft.com/en-us/library/windows/desktop/ms644946.aspx pPeekMessageA(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE); // Signal windows_init() that we're ready to service requests if (!SetEvent((HANDLE)param)) { usbi_dbg("SetEvent failed for timer init event: %s", windows_error_str(0)); } param = NULL; // Main loop - wait for requests while (1) { if (pGetMessageA(&msg, NULL, WM_TIMER_REQUEST, WM_TIMER_EXIT) == -1) { usbi_err(NULL, "GetMessage failed for timer thread: %s", windows_error_str(0)); return 1; } switch (msg.message) { case WM_TIMER_REQUEST: // Requests to this thread are for hires always // Microsoft says that this function always succeeds on XP and later // See https://msdn.microsoft.com/en-us/library/windows/desktop/ms644904.aspx request = (struct timer_request *)msg.lParam; QueryPerformanceCounter(&hires_counter); request->tp->tv_sec = (long)(hires_counter.QuadPart / hires_frequency); request->tp->tv_nsec = (long)(((hires_counter.QuadPart % hires_frequency) / 1000) * hires_ticks_to_ps); if (!SetEvent(request->event)) { usbi_err(NULL, "SetEvent failed for timer request: %s", windows_error_str(0)); } break; case WM_TIMER_EXIT: usbi_dbg("timer thread quitting"); return 0; } } } static int windows_clock_gettime(int clk_id, struct timespec *tp) { struct timer_request request; FILETIME filetime; ULARGE_INTEGER rtime; DWORD r; switch(clk_id) { case USBI_CLOCK_MONOTONIC: if (timer_thread) { request.tp = tp; request.event = CreateEvent(NULL, FALSE, FALSE, NULL); if (request.event == NULL) { return LIBUSB_ERROR_NO_MEM; } if (!pPostThreadMessageA(timer_thread_id, WM_TIMER_REQUEST, 0, (LPARAM)&request)) { usbi_err(NULL, "PostThreadMessage failed for timer thread: %s", windows_error_str(0)); CloseHandle(request.event); return LIBUSB_ERROR_OTHER; } do { r = WaitForSingleObject(request.event, TIMER_REQUEST_RETRY_MS); if (r == WAIT_TIMEOUT) { usbi_dbg("could not obtain a timer value within reasonable timeframe - too much load?"); } else if (r == WAIT_FAILED) { usbi_err(NULL, "WaitForSingleObject failed: %s", windows_error_str(0)); } } while (r == WAIT_TIMEOUT); CloseHandle(request.event); if (r == WAIT_OBJECT_0) { return LIBUSB_SUCCESS; } else { return LIBUSB_ERROR_OTHER; } } // Fall through and return real-time if monotonic was not detected @ timer init case USBI_CLOCK_REALTIME: // We follow http://msdn.microsoft.com/en-us/library/ms724928%28VS.85%29.aspx // with a predef epoch_time to have an epoch that starts at 1970.01.01 00:00 // Note however that our resolution is bounded by the Windows system time // functions and is at best of the order of 1 ms (or, usually, worse) GetSystemTimeAsFileTime(&filetime); rtime.LowPart = filetime.dwLowDateTime; rtime.HighPart = filetime.dwHighDateTime; rtime.QuadPart -= epoch_time; tp->tv_sec = (long)(rtime.QuadPart / 10000000); tp->tv_nsec = (long)((rtime.QuadPart % 10000000)*100); return LIBUSB_SUCCESS; default: return LIBUSB_ERROR_INVALID_PARAM; } } // NB: MSVC6 does not support named initializers. const struct usbi_os_backend windows_backend = { "Windows", USBI_CAP_HAS_HID_ACCESS, windows_init, windows_exit, windows_get_device_list, NULL, /* hotplug_poll */ windows_open, windows_close, windows_get_device_descriptor, windows_get_active_config_descriptor, windows_get_config_descriptor, NULL, /* get_config_descriptor_by_value() */ windows_get_configuration, windows_set_configuration, windows_claim_interface, windows_release_interface, windows_set_interface_altsetting, windows_clear_halt, windows_reset_device, NULL, /* alloc_streams */ NULL, /* free_streams */ windows_kernel_driver_active, windows_detach_kernel_driver, windows_attach_kernel_driver, windows_destroy_device, windows_submit_transfer, windows_cancel_transfer, windows_clear_transfer_priv, windows_handle_events, NULL, /* handle_transfer_completion() */ windows_clock_gettime, #if defined(USBI_TIMERFD_AVAILABLE) NULL, #endif sizeof(struct windows_device_priv), sizeof(struct windows_device_handle_priv), sizeof(struct windows_transfer_priv), }; /* * USB API backends */ static int unsupported_init(int sub_api, struct libusb_context *ctx) { return LIBUSB_SUCCESS; } static int unsupported_exit(int sub_api) { return LIBUSB_SUCCESS; } static int unsupported_open(int sub_api, struct libusb_device_handle *dev_handle) { PRINT_UNSUPPORTED_API(open); } static void unsupported_close(int sub_api, struct libusb_device_handle *dev_handle) { usbi_dbg("unsupported API call for 'close'"); } static int unsupported_configure_endpoints(int sub_api, struct libusb_device_handle *dev_handle, int iface) { PRINT_UNSUPPORTED_API(configure_endpoints); } static int unsupported_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface) { PRINT_UNSUPPORTED_API(claim_interface); } static int unsupported_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, int iface, int altsetting) { PRINT_UNSUPPORTED_API(set_interface_altsetting); } static int unsupported_release_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface) { PRINT_UNSUPPORTED_API(release_interface); } static int unsupported_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint) { PRINT_UNSUPPORTED_API(clear_halt); } static int unsupported_reset_device(int sub_api, struct libusb_device_handle *dev_handle) { PRINT_UNSUPPORTED_API(reset_device); } static int unsupported_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer) { PRINT_UNSUPPORTED_API(submit_bulk_transfer); } static int unsupported_submit_iso_transfer(int sub_api, struct usbi_transfer *itransfer) { PRINT_UNSUPPORTED_API(submit_iso_transfer); } static int unsupported_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer) { PRINT_UNSUPPORTED_API(submit_control_transfer); } static int unsupported_abort_control(int sub_api, struct usbi_transfer *itransfer) { PRINT_UNSUPPORTED_API(abort_control); } static int unsupported_abort_transfers(int sub_api, struct usbi_transfer *itransfer) { PRINT_UNSUPPORTED_API(abort_transfers); } static int unsupported_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, uint32_t io_size) { PRINT_UNSUPPORTED_API(copy_transfer_data); } static int common_configure_endpoints(int sub_api, struct libusb_device_handle *dev_handle, int iface) { return LIBUSB_SUCCESS; } // These names must be uppercase const char* hub_driver_names[] = {"USBHUB", "USBHUB3", "USB3HUB", "NUSB3HUB", "RUSB3HUB", "FLXHCIH", "TIHUB3", "ETRONHUB3", "VIAHUB3", "ASMTHUB3", "IUSB3HUB", "VUSB3HUB", "AMDHUB30"}; const char* composite_driver_names[] = {"USBCCGP"}; const char* winusbx_driver_names[] = WINUSBX_DRV_NAMES; const char* hid_driver_names[] = {"HIDUSB", "MOUHID", "KBDHID"}; const struct windows_usb_api_backend usb_api_backend[USB_API_MAX] = { { USB_API_UNSUPPORTED, "Unsupported API", NULL, 0, unsupported_init, unsupported_exit, unsupported_open, unsupported_close, unsupported_configure_endpoints, unsupported_claim_interface, unsupported_set_interface_altsetting, unsupported_release_interface, unsupported_clear_halt, unsupported_reset_device, unsupported_submit_bulk_transfer, unsupported_submit_iso_transfer, unsupported_submit_control_transfer, unsupported_abort_control, unsupported_abort_transfers, unsupported_copy_transfer_data, }, { USB_API_HUB, "HUB API", hub_driver_names, ARRAYSIZE(hub_driver_names), unsupported_init, unsupported_exit, unsupported_open, unsupported_close, unsupported_configure_endpoints, unsupported_claim_interface, unsupported_set_interface_altsetting, unsupported_release_interface, unsupported_clear_halt, unsupported_reset_device, unsupported_submit_bulk_transfer, unsupported_submit_iso_transfer, unsupported_submit_control_transfer, unsupported_abort_control, unsupported_abort_transfers, unsupported_copy_transfer_data, }, { USB_API_COMPOSITE, "Composite API", composite_driver_names, ARRAYSIZE(composite_driver_names), composite_init, composite_exit, composite_open, composite_close, common_configure_endpoints, composite_claim_interface, composite_set_interface_altsetting, composite_release_interface, composite_clear_halt, composite_reset_device, composite_submit_bulk_transfer, composite_submit_iso_transfer, composite_submit_control_transfer, composite_abort_control, composite_abort_transfers, composite_copy_transfer_data, }, { USB_API_WINUSBX, "WinUSB-like APIs", winusbx_driver_names, ARRAYSIZE(winusbx_driver_names), winusbx_init, winusbx_exit, winusbx_open, winusbx_close, winusbx_configure_endpoints, winusbx_claim_interface, winusbx_set_interface_altsetting, winusbx_release_interface, winusbx_clear_halt, winusbx_reset_device, winusbx_submit_bulk_transfer, unsupported_submit_iso_transfer, winusbx_submit_control_transfer, winusbx_abort_control, winusbx_abort_transfers, winusbx_copy_transfer_data, }, { USB_API_HID, "HID API", hid_driver_names, ARRAYSIZE(hid_driver_names), hid_init, hid_exit, hid_open, hid_close, common_configure_endpoints, hid_claim_interface, hid_set_interface_altsetting, hid_release_interface, hid_clear_halt, hid_reset_device, hid_submit_bulk_transfer, unsupported_submit_iso_transfer, hid_submit_control_transfer, hid_abort_transfers, hid_abort_transfers, hid_copy_transfer_data, }, }; /* * WinUSB-like (WinUSB, libusb0/libusbK through libusbk DLL) API functions */ #define WinUSBX_Set(fn) do { if (native_winusb) WinUSBX[i].fn = (WinUsb_##fn##_t) GetProcAddress(h, "WinUsb_" #fn); \ else pLibK_GetProcAddress((PVOID*)&WinUSBX[i].fn, i, KUSB_FNID_##fn); } while (0) static int winusbx_init(int sub_api, struct libusb_context *ctx) { HMODULE h = NULL; bool native_winusb = false; int i; KLIB_VERSION LibK_Version; LibK_GetProcAddress_t pLibK_GetProcAddress = NULL; LibK_GetVersion_t pLibK_GetVersion = NULL; h = GetModuleHandleA("libusbK"); if (h == NULL) { h = LoadLibraryA("libusbK"); } if (h == NULL) { usbi_info(ctx, "libusbK DLL is not available, will use native WinUSB"); h = GetModuleHandleA("WinUSB"); if (h == NULL) { h = LoadLibraryA("WinUSB"); } if (h == NULL) { usbi_warn(ctx, "WinUSB DLL is not available either, " "you will not be able to access devices outside of enumeration"); return LIBUSB_ERROR_NOT_FOUND; } } else { usbi_dbg("using libusbK DLL for universal access"); pLibK_GetVersion = (LibK_GetVersion_t) GetProcAddress(h, "LibK_GetVersion"); if (pLibK_GetVersion != NULL) { pLibK_GetVersion(&LibK_Version); usbi_dbg("libusbK version: %d.%d.%d.%d", LibK_Version.Major, LibK_Version.Minor, LibK_Version.Micro, LibK_Version.Nano); } pLibK_GetProcAddress = (LibK_GetProcAddress_t) GetProcAddress(h, "LibK_GetProcAddress"); if (pLibK_GetProcAddress == NULL) { usbi_err(ctx, "LibK_GetProcAddress() not found in libusbK DLL"); return LIBUSB_ERROR_NOT_FOUND; } } native_winusb = (pLibK_GetProcAddress == NULL); for (i=SUB_API_LIBUSBK; idev); struct windows_device_priv *priv = _device_priv(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); HANDLE file_handle; int i; CHECK_WINUSBX_AVAILABLE(sub_api); // WinUSB requires a seperate handle for each interface for (i = 0; i < USB_MAXINTERFACES; i++) { if ( (priv->usb_interface[i].path != NULL) && (priv->usb_interface[i].apib->id == USB_API_WINUSBX) ) { file_handle = CreateFileA(priv->usb_interface[i].path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL); if (file_handle == INVALID_HANDLE_VALUE) { usbi_err(ctx, "could not open device %s (interface %d): %s", priv->usb_interface[i].path, i, windows_error_str(0)); switch(GetLastError()) { case ERROR_FILE_NOT_FOUND: // The device was disconnected return LIBUSB_ERROR_NO_DEVICE; case ERROR_ACCESS_DENIED: return LIBUSB_ERROR_ACCESS; default: return LIBUSB_ERROR_IO; } } handle_priv->interface_handle[i].dev_handle = file_handle; } } return LIBUSB_SUCCESS; } static void winusbx_close(int sub_api, struct libusb_device_handle *dev_handle) { struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); HANDLE handle; int i; if (sub_api == SUB_API_NOTSET) sub_api = priv->sub_api; if (!WinUSBX[sub_api].initialized) return; if (priv->apib->id == USB_API_COMPOSITE) { // If this is a composite device, just free and close all WinUSB-like // interfaces directly (each is independent and not associated with another) for (i = 0; i < USB_MAXINTERFACES; i++) { if (priv->usb_interface[i].apib->id == USB_API_WINUSBX) { handle = handle_priv->interface_handle[i].api_handle; if ((handle != 0) && (handle != INVALID_HANDLE_VALUE)) { WinUSBX[sub_api].Free(handle); } handle = handle_priv->interface_handle[i].dev_handle; if ((handle != 0) && (handle != INVALID_HANDLE_VALUE)) { CloseHandle(handle); } } } } else { // If this is a WinUSB device, free all interfaces above interface 0, // then free and close interface 0 last for (i = 1; i < USB_MAXINTERFACES; i++) { handle = handle_priv->interface_handle[i].api_handle; if ((handle != 0) && (handle != INVALID_HANDLE_VALUE)) { WinUSBX[sub_api].Free(handle); } } handle = handle_priv->interface_handle[0].api_handle; if ((handle != 0) && (handle != INVALID_HANDLE_VALUE)) { WinUSBX[sub_api].Free(handle); } handle = handle_priv->interface_handle[0].dev_handle; if ((handle != 0) && (handle != INVALID_HANDLE_VALUE)) { CloseHandle(handle); } } } static int winusbx_configure_endpoints(int sub_api, struct libusb_device_handle *dev_handle, int iface) { struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); HANDLE winusb_handle = handle_priv->interface_handle[iface].api_handle; UCHAR policy; ULONG timeout = 0; uint8_t endpoint_address; int i; CHECK_WINUSBX_AVAILABLE(sub_api); // With handle and enpoints set (in parent), we can setup the default pipe properties // see http://download.microsoft.com/download/D/1/D/D1DD7745-426B-4CC3-A269-ABBBE427C0EF/DVC-T705_DDC08.pptx for (i=-1; iusb_interface[iface].nb_endpoints; i++) { endpoint_address =(i==-1)?0:priv->usb_interface[iface].endpoint[i]; if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, PIPE_TRANSFER_TIMEOUT, sizeof(ULONG), &timeout)) { usbi_dbg("failed to set PIPE_TRANSFER_TIMEOUT for control endpoint %02X", endpoint_address); } if ((i == -1) || (sub_api == SUB_API_LIBUSB0)) { continue; // Other policies don't apply to control endpoint or libusb0 } policy = false; if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, SHORT_PACKET_TERMINATE, sizeof(UCHAR), &policy)) { usbi_dbg("failed to disable SHORT_PACKET_TERMINATE for endpoint %02X", endpoint_address); } if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, IGNORE_SHORT_PACKETS, sizeof(UCHAR), &policy)) { usbi_dbg("failed to disable IGNORE_SHORT_PACKETS for endpoint %02X", endpoint_address); } policy = true; /* ALLOW_PARTIAL_READS must be enabled due to likely libusbK bug. See: https://sourceforge.net/mailarchive/message.php?msg_id=29736015 */ if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, ALLOW_PARTIAL_READS, sizeof(UCHAR), &policy)) { usbi_dbg("failed to enable ALLOW_PARTIAL_READS for endpoint %02X", endpoint_address); } if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, AUTO_CLEAR_STALL, sizeof(UCHAR), &policy)) { usbi_dbg("failed to enable AUTO_CLEAR_STALL for endpoint %02X", endpoint_address); } } return LIBUSB_SUCCESS; } static int winusbx_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); bool is_using_usbccgp = (priv->apib->id == USB_API_COMPOSITE); HANDLE file_handle, winusb_handle; DWORD err; int i; SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL; HDEVINFO dev_info = INVALID_HANDLE_VALUE; SP_DEVINFO_DATA dev_info_data; char* dev_path_no_guid = NULL; char filter_path[] = "\\\\.\\libusb0-0000"; bool found_filter = false; CHECK_WINUSBX_AVAILABLE(sub_api); // If the device is composite, but using the default Windows composite parent driver (usbccgp) // or if it's the first WinUSB-like interface, we get a handle through Initialize(). if ((is_using_usbccgp) || (iface == 0)) { // composite device (independent interfaces) or interface 0 file_handle = handle_priv->interface_handle[iface].dev_handle; if ((file_handle == 0) || (file_handle == INVALID_HANDLE_VALUE)) { return LIBUSB_ERROR_NOT_FOUND; } if (!WinUSBX[sub_api].Initialize(file_handle, &winusb_handle)) { handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; err = GetLastError(); switch(err) { case ERROR_BAD_COMMAND: // The device was disconnected usbi_err(ctx, "could not access interface %d: %s", iface, windows_error_str(0)); return LIBUSB_ERROR_NO_DEVICE; default: // it may be that we're using the libusb0 filter driver. // TODO: can we move this whole business into the K/0 DLL? for (i = 0; ; i++) { safe_free(dev_interface_details); safe_free(dev_path_no_guid); dev_interface_details = get_interface_details_filter(ctx, &dev_info, &dev_info_data, &GUID_DEVINTERFACE_LIBUSB0_FILTER, i, filter_path); if ((found_filter) || (dev_interface_details == NULL)) { break; } // ignore GUID part dev_path_no_guid = sanitize_path(strtok(dev_interface_details->DevicePath, "{")); if (safe_strncmp(dev_path_no_guid, priv->usb_interface[iface].path, safe_strlen(dev_path_no_guid)) == 0) { file_handle = CreateFileA(filter_path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL); if (file_handle == INVALID_HANDLE_VALUE) { usbi_err(ctx, "could not open device %s: %s", filter_path, windows_error_str(0)); } else { WinUSBX[sub_api].Free(winusb_handle); if (WinUSBX[sub_api].Initialize(file_handle, &winusb_handle)) found_filter = true; else usbi_err(ctx, "could not initialize filter driver for %s", filter_path); } } } if (!found_filter) { usbi_err(ctx, "could not access interface %d: %s", iface, windows_error_str(err)); return LIBUSB_ERROR_ACCESS; } } } handle_priv->interface_handle[iface].api_handle = winusb_handle; } else { // For all other interfaces, use GetAssociatedInterface() winusb_handle = handle_priv->interface_handle[0].api_handle; // It is a requirement for multiple interface devices on Windows that, to you // must first claim the first interface before you claim the others if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) { file_handle = handle_priv->interface_handle[0].dev_handle; if (WinUSBX[sub_api].Initialize(file_handle, &winusb_handle)) { handle_priv->interface_handle[0].api_handle = winusb_handle; usbi_warn(ctx, "auto-claimed interface 0 (required to claim %d with WinUSB)", iface); } else { usbi_warn(ctx, "failed to auto-claim interface 0 (required to claim %d with WinUSB): %s", iface, windows_error_str(0)); return LIBUSB_ERROR_ACCESS; } } if (!WinUSBX[sub_api].GetAssociatedInterface(winusb_handle, (UCHAR)(iface-1), &handle_priv->interface_handle[iface].api_handle)) { handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; switch(GetLastError()) { case ERROR_NO_MORE_ITEMS: // invalid iface return LIBUSB_ERROR_NOT_FOUND; case ERROR_BAD_COMMAND: // The device was disconnected return LIBUSB_ERROR_NO_DEVICE; case ERROR_ALREADY_EXISTS: // already claimed return LIBUSB_ERROR_BUSY; default: usbi_err(ctx, "could not claim interface %d: %s", iface, windows_error_str(0)); return LIBUSB_ERROR_ACCESS; } } } usbi_dbg("claimed interface %d", iface); handle_priv->active_interface = iface; return LIBUSB_SUCCESS; } static int winusbx_release_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface) { struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); HANDLE winusb_handle; CHECK_WINUSBX_AVAILABLE(sub_api); winusb_handle = handle_priv->interface_handle[iface].api_handle; if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) { return LIBUSB_ERROR_NOT_FOUND; } WinUSBX[sub_api].Free(winusb_handle); handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; return LIBUSB_SUCCESS; } /* * Return the first valid interface (of the same API type), for control transfers */ static int get_valid_interface(struct libusb_device_handle *dev_handle, int api_id) { struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); int i; if ((api_id < USB_API_WINUSBX) || (api_id > USB_API_HID)) { usbi_dbg("unsupported API ID"); return -1; } for (i=0; iinterface_handle[i].dev_handle != 0) && (handle_priv->interface_handle[i].dev_handle != INVALID_HANDLE_VALUE) && (handle_priv->interface_handle[i].api_handle != 0) && (handle_priv->interface_handle[i].api_handle != INVALID_HANDLE_VALUE) && (priv->usb_interface[i].apib->id == api_id) ) { return i; } } return -1; } /* * Lookup interface by endpoint address. -1 if not found */ static int interface_by_endpoint(struct windows_device_priv *priv, struct windows_device_handle_priv *handle_priv, uint8_t endpoint_address) { int i, j; for (i=0; iinterface_handle[i].api_handle == INVALID_HANDLE_VALUE) continue; if (handle_priv->interface_handle[i].api_handle == 0) continue; if (priv->usb_interface[i].endpoint == NULL) continue; for (j=0; jusb_interface[i].nb_endpoints; j++) { if (priv->usb_interface[i].endpoint[j] == endpoint_address) { return i; } } } return -1; } static int winusbx_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_handle_priv *handle_priv = _device_handle_priv( transfer->dev_handle); WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer; ULONG size; HANDLE winusb_handle; int current_interface; struct winfd wfd; CHECK_WINUSBX_AVAILABLE(sub_api); transfer_priv->pollable_fd = INVALID_WINFD; size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE; if (size > MAX_CTRL_BUFFER_LENGTH) return LIBUSB_ERROR_INVALID_PARAM; current_interface = get_valid_interface(transfer->dev_handle, USB_API_WINUSBX); if (current_interface < 0) { if (auto_claim(transfer, ¤t_interface, USB_API_WINUSBX) != LIBUSB_SUCCESS) { return LIBUSB_ERROR_NOT_FOUND; } } usbi_dbg("will use interface %d", current_interface); winusb_handle = handle_priv->interface_handle[current_interface].api_handle; wfd = usbi_create_fd(winusb_handle, RW_READ, NULL, NULL); // Always use the handle returned from usbi_create_fd (wfd.handle) if (wfd.fd < 0) { return LIBUSB_ERROR_NO_MEM; } // Sending of set configuration control requests from WinUSB creates issues if ( ((setup->request_type & (0x03 << 5)) == LIBUSB_REQUEST_TYPE_STANDARD) && (setup->request == LIBUSB_REQUEST_SET_CONFIGURATION) ) { if (setup->value != priv->active_config) { usbi_warn(ctx, "cannot set configuration other than the default one"); usbi_free_fd(&wfd); return LIBUSB_ERROR_INVALID_PARAM; } wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; wfd.overlapped->InternalHigh = 0; } else { if (!WinUSBX[sub_api].ControlTransfer(wfd.handle, *setup, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, size, NULL, wfd.overlapped)) { if(GetLastError() != ERROR_IO_PENDING) { usbi_warn(ctx, "ControlTransfer failed: %s", windows_error_str(0)); usbi_free_fd(&wfd); return LIBUSB_ERROR_IO; } } else { wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; wfd.overlapped->InternalHigh = (DWORD)size; } } // Use priv_transfer to store data needed for async polling transfer_priv->pollable_fd = wfd; transfer_priv->interface_number = (uint8_t)current_interface; return LIBUSB_SUCCESS; } static int winusbx_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, int iface, int altsetting) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); HANDLE winusb_handle; CHECK_WINUSBX_AVAILABLE(sub_api); if (altsetting > 255) { return LIBUSB_ERROR_INVALID_PARAM; } winusb_handle = handle_priv->interface_handle[iface].api_handle; if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) { usbi_err(ctx, "interface must be claimed first"); return LIBUSB_ERROR_NOT_FOUND; } if (!WinUSBX[sub_api].SetCurrentAlternateSetting(winusb_handle, (UCHAR)altsetting)) { usbi_err(ctx, "SetCurrentAlternateSetting failed: %s", windows_error_str(0)); return LIBUSB_ERROR_IO; } return LIBUSB_SUCCESS; } static int winusbx_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); HANDLE winusb_handle; bool ret; int current_interface; struct winfd wfd; CHECK_WINUSBX_AVAILABLE(sub_api); transfer_priv->pollable_fd = INVALID_WINFD; current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); if (current_interface < 0) { usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer"); return LIBUSB_ERROR_NOT_FOUND; } usbi_dbg("matched endpoint %02X with interface %d", transfer->endpoint, current_interface); winusb_handle = handle_priv->interface_handle[current_interface].api_handle; wfd = usbi_create_fd(winusb_handle, IS_XFERIN(transfer) ? RW_READ : RW_WRITE, NULL, NULL); // Always use the handle returned from usbi_create_fd (wfd.handle) if (wfd.fd < 0) { return LIBUSB_ERROR_NO_MEM; } if (IS_XFERIN(transfer)) { usbi_dbg("reading %d bytes", transfer->length); ret = WinUSBX[sub_api].ReadPipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped); } else { usbi_dbg("writing %d bytes", transfer->length); ret = WinUSBX[sub_api].WritePipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped); } if (!ret) { if(GetLastError() != ERROR_IO_PENDING) { usbi_err(ctx, "ReadPipe/WritePipe failed: %s", windows_error_str(0)); usbi_free_fd(&wfd); return LIBUSB_ERROR_IO; } } else { wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; wfd.overlapped->InternalHigh = (DWORD)transfer->length; } transfer_priv->pollable_fd = wfd; transfer_priv->interface_number = (uint8_t)current_interface; return LIBUSB_SUCCESS; } static int winusbx_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); HANDLE winusb_handle; int current_interface; CHECK_WINUSBX_AVAILABLE(sub_api); current_interface = interface_by_endpoint(priv, handle_priv, endpoint); if (current_interface < 0) { usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear"); return LIBUSB_ERROR_NOT_FOUND; } usbi_dbg("matched endpoint %02X with interface %d", endpoint, current_interface); winusb_handle = handle_priv->interface_handle[current_interface].api_handle; if (!WinUSBX[sub_api].ResetPipe(winusb_handle, endpoint)) { usbi_err(ctx, "ResetPipe failed: %s", windows_error_str(0)); return LIBUSB_ERROR_NO_DEVICE; } return LIBUSB_SUCCESS; } /* * from http://www.winvistatips.com/winusb-bugchecks-t335323.html (confirmed * through testing as well): * "You can not call WinUsb_AbortPipe on control pipe. You can possibly cancel * the control transfer using CancelIo" */ static int winusbx_abort_control(int sub_api, struct usbi_transfer *itransfer) { // Cancelling of the I/O is done in the parent return LIBUSB_SUCCESS; } static int winusbx_abort_transfers(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); HANDLE winusb_handle; int current_interface; CHECK_WINUSBX_AVAILABLE(sub_api); current_interface = transfer_priv->interface_number; if ((current_interface < 0) || (current_interface >= USB_MAXINTERFACES)) { usbi_err(ctx, "program assertion failed: invalid interface_number"); return LIBUSB_ERROR_NOT_FOUND; } usbi_dbg("will use interface %d", current_interface); winusb_handle = handle_priv->interface_handle[current_interface].api_handle; if (!WinUSBX[sub_api].AbortPipe(winusb_handle, transfer->endpoint)) { usbi_err(ctx, "AbortPipe failed: %s", windows_error_str(0)); return LIBUSB_ERROR_NO_DEVICE; } return LIBUSB_SUCCESS; } /* * from the "How to Use WinUSB to Communicate with a USB Device" Microsoft white paper * (http://www.microsoft.com/whdc/connect/usb/winusb_howto.mspx): * "WinUSB does not support host-initiated reset port and cycle port operations" and * IOCTL_INTERNAL_USB_CYCLE_PORT is only available in kernel mode and the * IOCTL_USB_HUB_CYCLE_PORT ioctl was removed from Vista => the best we can do is * cycle the pipes (and even then, the control pipe can not be reset using WinUSB) */ // TODO: (post hotplug): see if we can force eject the device and redetect it (reuse hotplug?) static int winusbx_reset_device(int sub_api, struct libusb_device_handle *dev_handle) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); struct winfd wfd; HANDLE winusb_handle; int i, j; CHECK_WINUSBX_AVAILABLE(sub_api); // Reset any available pipe (except control) for (i=0; iinterface_handle[i].api_handle; for (wfd = handle_to_winfd(winusb_handle); wfd.fd > 0;) { // Cancel any pollable I/O usbi_remove_pollfd(ctx, wfd.fd); usbi_free_fd(&wfd); wfd = handle_to_winfd(winusb_handle); } if ( (winusb_handle != 0) && (winusb_handle != INVALID_HANDLE_VALUE)) { for (j=0; jusb_interface[i].nb_endpoints; j++) { usbi_dbg("resetting ep %02X", priv->usb_interface[i].endpoint[j]); if (!WinUSBX[sub_api].AbortPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) { usbi_err(ctx, "AbortPipe (pipe address %02X) failed: %s", priv->usb_interface[i].endpoint[j], windows_error_str(0)); } // FlushPipe seems to fail on OUT pipes if (IS_EPIN(priv->usb_interface[i].endpoint[j]) && (!WinUSBX[sub_api].FlushPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) ) { usbi_err(ctx, "FlushPipe (pipe address %02X) failed: %s", priv->usb_interface[i].endpoint[j], windows_error_str(0)); } if (!WinUSBX[sub_api].ResetPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) { usbi_err(ctx, "ResetPipe (pipe address %02X) failed: %s", priv->usb_interface[i].endpoint[j], windows_error_str(0)); } } } } // libusbK & libusb0 have the ability to issue an actual device reset if (WinUSBX[sub_api].ResetDevice != NULL) { winusb_handle = handle_priv->interface_handle[0].api_handle; if ( (winusb_handle != 0) && (winusb_handle != INVALID_HANDLE_VALUE)) { WinUSBX[sub_api].ResetDevice(winusb_handle); } } return LIBUSB_SUCCESS; } static int winusbx_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, uint32_t io_size) { itransfer->transferred += io_size; return LIBUSB_TRANSFER_COMPLETED; } /* * Internal HID Support functions (from libusb-win32) * Note that functions that complete data transfer synchronously must return * LIBUSB_COMPLETED instead of LIBUSB_SUCCESS */ static int _hid_get_hid_descriptor(struct hid_device_priv* dev, void *data, size_t *size); static int _hid_get_report_descriptor(struct hid_device_priv* dev, void *data, size_t *size); static int _hid_wcslen(WCHAR *str) { int i = 0; while (str[i] && (str[i] != 0x409)) { i++; } return i; } static int _hid_get_device_descriptor(struct hid_device_priv* dev, void *data, size_t *size) { struct libusb_device_descriptor d; d.bLength = LIBUSB_DT_DEVICE_SIZE; d.bDescriptorType = LIBUSB_DT_DEVICE; d.bcdUSB = 0x0200; /* 2.00 */ d.bDeviceClass = 0; d.bDeviceSubClass = 0; d.bDeviceProtocol = 0; d.bMaxPacketSize0 = 64; /* fix this! */ d.idVendor = (uint16_t)dev->vid; d.idProduct = (uint16_t)dev->pid; d.bcdDevice = 0x0100; d.iManufacturer = dev->string_index[0]; d.iProduct = dev->string_index[1]; d.iSerialNumber = dev->string_index[2]; d.bNumConfigurations = 1; if (*size > LIBUSB_DT_DEVICE_SIZE) *size = LIBUSB_DT_DEVICE_SIZE; memcpy(data, &d, *size); return LIBUSB_COMPLETED; } static int _hid_get_config_descriptor(struct hid_device_priv* dev, void *data, size_t *size) { char num_endpoints = 0; size_t config_total_len = 0; char tmp[HID_MAX_CONFIG_DESC_SIZE]; struct libusb_config_descriptor *cd; struct libusb_interface_descriptor *id; struct libusb_hid_descriptor *hd; struct libusb_endpoint_descriptor *ed; size_t tmp_size; if (dev->input_report_size) num_endpoints++; if (dev->output_report_size) num_endpoints++; config_total_len = LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE + LIBUSB_DT_HID_SIZE + num_endpoints * LIBUSB_DT_ENDPOINT_SIZE; cd = (struct libusb_config_descriptor *)tmp; id = (struct libusb_interface_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE); hd = (struct libusb_hid_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE); ed = (struct libusb_endpoint_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE + LIBUSB_DT_HID_SIZE); cd->bLength = LIBUSB_DT_CONFIG_SIZE; cd->bDescriptorType = LIBUSB_DT_CONFIG; cd->wTotalLength = (uint16_t) config_total_len; cd->bNumInterfaces = 1; cd->bConfigurationValue = 1; cd->iConfiguration = 0; cd->bmAttributes = 1 << 7; /* bus powered */ cd->MaxPower = 50; id->bLength = LIBUSB_DT_INTERFACE_SIZE; id->bDescriptorType = LIBUSB_DT_INTERFACE; id->bInterfaceNumber = 0; id->bAlternateSetting = 0; id->bNumEndpoints = num_endpoints; id->bInterfaceClass = 3; id->bInterfaceSubClass = 0; id->bInterfaceProtocol = 0; id->iInterface = 0; tmp_size = LIBUSB_DT_HID_SIZE; _hid_get_hid_descriptor(dev, hd, &tmp_size); if (dev->input_report_size) { ed->bLength = LIBUSB_DT_ENDPOINT_SIZE; ed->bDescriptorType = LIBUSB_DT_ENDPOINT; ed->bEndpointAddress = HID_IN_EP; ed->bmAttributes = 3; ed->wMaxPacketSize = dev->input_report_size - 1; ed->bInterval = 10; ed = (struct libusb_endpoint_descriptor *)((char*)ed + LIBUSB_DT_ENDPOINT_SIZE); } if (dev->output_report_size) { ed->bLength = LIBUSB_DT_ENDPOINT_SIZE; ed->bDescriptorType = LIBUSB_DT_ENDPOINT; ed->bEndpointAddress = HID_OUT_EP; ed->bmAttributes = 3; ed->wMaxPacketSize = dev->output_report_size - 1; ed->bInterval = 10; } if (*size > config_total_len) *size = config_total_len; memcpy(data, tmp, *size); return LIBUSB_COMPLETED; } static int _hid_get_string_descriptor(struct hid_device_priv* dev, int _index, void *data, size_t *size) { void *tmp = NULL; size_t tmp_size = 0; int i; /* language ID, EN-US */ char string_langid[] = { 0x09, 0x04 }; if ((*size < 2) || (*size > 255)) { return LIBUSB_ERROR_OVERFLOW; } if (_index == 0) { tmp = string_langid; tmp_size = sizeof(string_langid)+2; } else { for (i=0; i<3; i++) { if (_index == (dev->string_index[i])) { tmp = dev->string[i]; tmp_size = (_hid_wcslen(dev->string[i])+1) * sizeof(WCHAR); break; } } if (i == 3) { // not found return LIBUSB_ERROR_INVALID_PARAM; } } if(!tmp_size) { return LIBUSB_ERROR_INVALID_PARAM; } if (tmp_size < *size) { *size = tmp_size; } // 2 byte header ((uint8_t*)data)[0] = (uint8_t)*size; ((uint8_t*)data)[1] = LIBUSB_DT_STRING; memcpy((uint8_t*)data+2, tmp, *size-2); return LIBUSB_COMPLETED; } static int _hid_get_hid_descriptor(struct hid_device_priv* dev, void *data, size_t *size) { struct libusb_hid_descriptor d; uint8_t tmp[MAX_HID_DESCRIPTOR_SIZE]; size_t report_len = MAX_HID_DESCRIPTOR_SIZE; _hid_get_report_descriptor(dev, tmp, &report_len); d.bLength = LIBUSB_DT_HID_SIZE; d.bDescriptorType = LIBUSB_DT_HID; d.bcdHID = 0x0110; /* 1.10 */ d.bCountryCode = 0; d.bNumDescriptors = 1; d.bClassDescriptorType = LIBUSB_DT_REPORT; d.wClassDescriptorLength = (uint16_t)report_len; if (*size > LIBUSB_DT_HID_SIZE) *size = LIBUSB_DT_HID_SIZE; memcpy(data, &d, *size); return LIBUSB_COMPLETED; } static int _hid_get_report_descriptor(struct hid_device_priv* dev, void *data, size_t *size) { uint8_t d[MAX_HID_DESCRIPTOR_SIZE]; size_t i = 0; /* usage page (0xFFA0 == vendor defined) */ d[i++] = 0x06; d[i++] = 0xA0; d[i++] = 0xFF; /* usage (vendor defined) */ d[i++] = 0x09; d[i++] = 0x01; /* start collection (application) */ d[i++] = 0xA1; d[i++] = 0x01; /* input report */ if (dev->input_report_size) { /* usage (vendor defined) */ d[i++] = 0x09; d[i++] = 0x01; /* logical minimum (0) */ d[i++] = 0x15; d[i++] = 0x00; /* logical maximum (255) */ d[i++] = 0x25; d[i++] = 0xFF; /* report size (8 bits) */ d[i++] = 0x75; d[i++] = 0x08; /* report count */ d[i++] = 0x95; d[i++] = (uint8_t)dev->input_report_size - 1; /* input (data, variable, absolute) */ d[i++] = 0x81; d[i++] = 0x00; } /* output report */ if (dev->output_report_size) { /* usage (vendor defined) */ d[i++] = 0x09; d[i++] = 0x02; /* logical minimum (0) */ d[i++] = 0x15; d[i++] = 0x00; /* logical maximum (255) */ d[i++] = 0x25; d[i++] = 0xFF; /* report size (8 bits) */ d[i++] = 0x75; d[i++] = 0x08; /* report count */ d[i++] = 0x95; d[i++] = (uint8_t)dev->output_report_size - 1; /* output (data, variable, absolute) */ d[i++] = 0x91; d[i++] = 0x00; } /* feature report */ if (dev->feature_report_size) { /* usage (vendor defined) */ d[i++] = 0x09; d[i++] = 0x03; /* logical minimum (0) */ d[i++] = 0x15; d[i++] = 0x00; /* logical maximum (255) */ d[i++] = 0x25; d[i++] = 0xFF; /* report size (8 bits) */ d[i++] = 0x75; d[i++] = 0x08; /* report count */ d[i++] = 0x95; d[i++] = (uint8_t)dev->feature_report_size - 1; /* feature (data, variable, absolute) */ d[i++] = 0xb2; d[i++] = 0x02; d[i++] = 0x01; } /* end collection */ d[i++] = 0xC0; if (*size > i) *size = i; memcpy(data, d, *size); return LIBUSB_COMPLETED; } static int _hid_get_descriptor(struct hid_device_priv* dev, HANDLE hid_handle, int recipient, int type, int _index, void *data, size_t *size) { switch(type) { case LIBUSB_DT_DEVICE: usbi_dbg("LIBUSB_DT_DEVICE"); return _hid_get_device_descriptor(dev, data, size); case LIBUSB_DT_CONFIG: usbi_dbg("LIBUSB_DT_CONFIG"); if (!_index) return _hid_get_config_descriptor(dev, data, size); return LIBUSB_ERROR_INVALID_PARAM; case LIBUSB_DT_STRING: usbi_dbg("LIBUSB_DT_STRING"); return _hid_get_string_descriptor(dev, _index, data, size); case LIBUSB_DT_HID: usbi_dbg("LIBUSB_DT_HID"); if (!_index) return _hid_get_hid_descriptor(dev, data, size); return LIBUSB_ERROR_INVALID_PARAM; case LIBUSB_DT_REPORT: usbi_dbg("LIBUSB_DT_REPORT"); if (!_index) return _hid_get_report_descriptor(dev, data, size); return LIBUSB_ERROR_INVALID_PARAM; case LIBUSB_DT_PHYSICAL: usbi_dbg("LIBUSB_DT_PHYSICAL"); if (HidD_GetPhysicalDescriptor(hid_handle, data, (ULONG)*size)) return LIBUSB_COMPLETED; return LIBUSB_ERROR_OTHER; } usbi_dbg("unsupported"); return LIBUSB_ERROR_NOT_SUPPORTED; } static int _hid_get_report(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data, struct windows_transfer_priv *tp, size_t *size, OVERLAPPED* overlapped, int report_type) { uint8_t *buf; DWORD ioctl_code, read_size, expected_size = (DWORD)*size; int r = LIBUSB_SUCCESS; if (tp->hid_buffer != NULL) { usbi_dbg("program assertion failed: hid_buffer is not NULL"); } if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) { usbi_dbg("invalid size (%d)", *size); return LIBUSB_ERROR_INVALID_PARAM; } switch (report_type) { case HID_REPORT_TYPE_INPUT: ioctl_code = IOCTL_HID_GET_INPUT_REPORT; break; case HID_REPORT_TYPE_FEATURE: ioctl_code = IOCTL_HID_GET_FEATURE; break; default: usbi_dbg("unknown HID report type %d", report_type); return LIBUSB_ERROR_INVALID_PARAM; } // Add a trailing byte to detect overflows buf = (uint8_t*)calloc(expected_size+1, 1); if (buf == NULL) { return LIBUSB_ERROR_NO_MEM; } buf[0] = (uint8_t)id; // Must be set always usbi_dbg("report ID: 0x%02X", buf[0]); tp->hid_expected_size = expected_size; read_size = expected_size; // NB: The size returned by DeviceIoControl doesn't include report IDs when not in use (0) if (!DeviceIoControl(hid_handle, ioctl_code, buf, expected_size+1, buf, expected_size+1, &read_size, overlapped)) { if (GetLastError() != ERROR_IO_PENDING) { usbi_dbg("Failed to Read HID Report: %s", windows_error_str(0)); safe_free(buf); return LIBUSB_ERROR_IO; } // Asynchronous wait tp->hid_buffer = buf; tp->hid_dest = (uint8_t*)data; // copy dest, as not necessarily the start of the transfer buffer return LIBUSB_SUCCESS; } // Transfer completed synchronously => copy and discard extra buffer if (read_size == 0) { usbi_warn(NULL, "program assertion failed - read completed synchronously, but no data was read"); *size = 0; } else { if (buf[0] != id) { usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id); } if ((size_t)read_size > expected_size) { r = LIBUSB_ERROR_OVERFLOW; usbi_dbg("OVERFLOW!"); } else { r = LIBUSB_COMPLETED; } *size = MIN((size_t)read_size, *size); if (id == 0) { // Discard report ID memcpy(data, buf+1, *size); } else { memcpy(data, buf, *size); } } safe_free(buf); return r; } static int _hid_set_report(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data, struct windows_transfer_priv *tp, size_t *size, OVERLAPPED* overlapped, int report_type) { uint8_t *buf = NULL; DWORD ioctl_code, write_size= (DWORD)*size; if (tp->hid_buffer != NULL) { usbi_dbg("program assertion failed: hid_buffer is not NULL"); } if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) { usbi_dbg("invalid size (%d)", *size); return LIBUSB_ERROR_INVALID_PARAM; } switch (report_type) { case HID_REPORT_TYPE_OUTPUT: ioctl_code = IOCTL_HID_SET_OUTPUT_REPORT; break; case HID_REPORT_TYPE_FEATURE: ioctl_code = IOCTL_HID_SET_FEATURE; break; default: usbi_dbg("unknown HID report type %d", report_type); return LIBUSB_ERROR_INVALID_PARAM; } usbi_dbg("report ID: 0x%02X", id); // When report IDs are not used (i.e. when id == 0), we must add // a null report ID. Otherwise, we just use original data buffer if (id == 0) { write_size++; } buf = (uint8_t*) malloc(write_size); if (buf == NULL) { return LIBUSB_ERROR_NO_MEM; } if (id == 0) { buf[0] = 0; memcpy(buf + 1, data, *size); } else { // This seems like a waste, but if we don't duplicate the // data, we'll get issues when freeing hid_buffer memcpy(buf, data, *size); if (buf[0] != id) { usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id); } } // NB: The size returned by DeviceIoControl doesn't include report IDs when not in use (0) if (!DeviceIoControl(hid_handle, ioctl_code, buf, write_size, buf, write_size, &write_size, overlapped)) { if (GetLastError() != ERROR_IO_PENDING) { usbi_dbg("Failed to Write HID Output Report: %s", windows_error_str(0)); safe_free(buf); return LIBUSB_ERROR_IO; } tp->hid_buffer = buf; tp->hid_dest = NULL; return LIBUSB_SUCCESS; } // Transfer completed synchronously *size = write_size; if (write_size == 0) { usbi_dbg("program assertion failed - write completed synchronously, but no data was written"); } safe_free(buf); return LIBUSB_COMPLETED; } static int _hid_class_request(struct hid_device_priv* dev, HANDLE hid_handle, int request_type, int request, int value, int _index, void *data, struct windows_transfer_priv *tp, size_t *size, OVERLAPPED* overlapped) { int report_type = (value >> 8) & 0xFF; int report_id = value & 0xFF; if ( (LIBUSB_REQ_RECIPIENT(request_type) != LIBUSB_RECIPIENT_INTERFACE) && (LIBUSB_REQ_RECIPIENT(request_type) != LIBUSB_RECIPIENT_DEVICE) ) return LIBUSB_ERROR_INVALID_PARAM; if (LIBUSB_REQ_OUT(request_type) && request == HID_REQ_SET_REPORT) return _hid_set_report(dev, hid_handle, report_id, data, tp, size, overlapped, report_type); if (LIBUSB_REQ_IN(request_type) && request == HID_REQ_GET_REPORT) return _hid_get_report(dev, hid_handle, report_id, data, tp, size, overlapped, report_type); return LIBUSB_ERROR_INVALID_PARAM; } /* * HID API functions */ static int hid_init(int sub_api, struct libusb_context *ctx) { DLL_LOAD(hid.dll, HidD_GetAttributes, TRUE); DLL_LOAD(hid.dll, HidD_GetHidGuid, TRUE); DLL_LOAD(hid.dll, HidD_GetPreparsedData, TRUE); DLL_LOAD(hid.dll, HidD_FreePreparsedData, TRUE); DLL_LOAD(hid.dll, HidD_GetManufacturerString, TRUE); DLL_LOAD(hid.dll, HidD_GetProductString, TRUE); DLL_LOAD(hid.dll, HidD_GetSerialNumberString, TRUE); DLL_LOAD(hid.dll, HidP_GetCaps, TRUE); DLL_LOAD(hid.dll, HidD_SetNumInputBuffers, TRUE); DLL_LOAD(hid.dll, HidD_SetFeature, TRUE); DLL_LOAD(hid.dll, HidD_GetFeature, TRUE); DLL_LOAD(hid.dll, HidD_GetPhysicalDescriptor, TRUE); DLL_LOAD(hid.dll, HidD_GetInputReport, FALSE); DLL_LOAD(hid.dll, HidD_SetOutputReport, FALSE); DLL_LOAD(hid.dll, HidD_FlushQueue, TRUE); DLL_LOAD(hid.dll, HidP_GetValueCaps, TRUE); api_hid_available = true; return LIBUSB_SUCCESS; } static int hid_exit(int sub_api) { return LIBUSB_SUCCESS; } // NB: open and close must ensure that they only handle interface of // the right API type, as these functions can be called wholesale from // composite_open(), with interfaces belonging to different APIs static int hid_open(int sub_api, struct libusb_device_handle *dev_handle) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); struct windows_device_priv *priv = _device_priv(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); HIDD_ATTRIBUTES hid_attributes; PHIDP_PREPARSED_DATA preparsed_data = NULL; HIDP_CAPS capabilities; HIDP_VALUE_CAPS *value_caps; HANDLE hid_handle = INVALID_HANDLE_VALUE; int i, j; // report IDs handling ULONG size[3]; const char* type[3] = {"input", "output", "feature"}; int nb_ids[2]; // zero and nonzero report IDs CHECK_HID_AVAILABLE; if (priv->hid == NULL) { usbi_err(ctx, "program assertion failed - private HID structure is unitialized"); return LIBUSB_ERROR_NOT_FOUND; } for (i = 0; i < USB_MAXINTERFACES; i++) { if ( (priv->usb_interface[i].path != NULL) && (priv->usb_interface[i].apib->id == USB_API_HID) ) { hid_handle = CreateFileA(priv->usb_interface[i].path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL); /* * http://www.lvr.com/hidfaq.htm: Why do I receive "Access denied" when attempting to access my HID? * "Windows 2000 and later have exclusive read/write access to HIDs that are configured as a system * keyboards or mice. An application can obtain a handle to a system keyboard or mouse by not * requesting READ or WRITE access with CreateFile. Applications can then use HidD_SetFeature and * HidD_GetFeature (if the device supports Feature reports)." */ if (hid_handle == INVALID_HANDLE_VALUE) { usbi_warn(ctx, "could not open HID device in R/W mode (keyboard or mouse?) - trying without"); hid_handle = CreateFileA(priv->usb_interface[i].path, 0, FILE_SHARE_WRITE | FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL); if (hid_handle == INVALID_HANDLE_VALUE) { usbi_err(ctx, "could not open device %s (interface %d): %s", priv->path, i, windows_error_str(0)); switch(GetLastError()) { case ERROR_FILE_NOT_FOUND: // The device was disconnected return LIBUSB_ERROR_NO_DEVICE; case ERROR_ACCESS_DENIED: return LIBUSB_ERROR_ACCESS; default: return LIBUSB_ERROR_IO; } } priv->usb_interface[i].restricted_functionality = true; } handle_priv->interface_handle[i].api_handle = hid_handle; } } hid_attributes.Size = sizeof(hid_attributes); do { if (!HidD_GetAttributes(hid_handle, &hid_attributes)) { usbi_err(ctx, "could not gain access to HID top collection (HidD_GetAttributes)"); break; } priv->hid->vid = hid_attributes.VendorID; priv->hid->pid = hid_attributes.ProductID; // Set the maximum available input buffer size for (i=32; HidD_SetNumInputBuffers(hid_handle, i); i*=2); usbi_dbg("set maximum input buffer size to %d", i/2); // Get the maximum input and output report size if (!HidD_GetPreparsedData(hid_handle, &preparsed_data) || !preparsed_data) { usbi_err(ctx, "could not read HID preparsed data (HidD_GetPreparsedData)"); break; } if (HidP_GetCaps(preparsed_data, &capabilities) != HIDP_STATUS_SUCCESS) { usbi_err(ctx, "could not parse HID capabilities (HidP_GetCaps)"); break; } // Find out if interrupt will need report IDs size[0] = capabilities.NumberInputValueCaps; size[1] = capabilities.NumberOutputValueCaps; size[2] = capabilities.NumberFeatureValueCaps; for (j=HidP_Input; j<=HidP_Feature; j++) { usbi_dbg("%d HID %s report value(s) found", size[j], type[j]); priv->hid->uses_report_ids[j] = false; if (size[j] > 0) { value_caps = (HIDP_VALUE_CAPS*) calloc(size[j], sizeof(HIDP_VALUE_CAPS)); if ( (value_caps != NULL) && (HidP_GetValueCaps((HIDP_REPORT_TYPE)j, value_caps, &size[j], preparsed_data) == HIDP_STATUS_SUCCESS) && (size[j] >= 1) ) { nb_ids[0] = 0; nb_ids[1] = 0; for (i=0; i<(int)size[j]; i++) { usbi_dbg(" Report ID: 0x%02X", value_caps[i].ReportID); if (value_caps[i].ReportID != 0) { nb_ids[1]++; } else { nb_ids[0]++; } } if (nb_ids[1] != 0) { if (nb_ids[0] != 0) { usbi_warn(ctx, "program assertion failed: zero and nonzero report IDs used for %s", type[j]); } priv->hid->uses_report_ids[j] = true; } } else { usbi_warn(ctx, " could not process %s report IDs", type[j]); } safe_free(value_caps); } } // Set the report sizes priv->hid->input_report_size = capabilities.InputReportByteLength; priv->hid->output_report_size = capabilities.OutputReportByteLength; priv->hid->feature_report_size = capabilities.FeatureReportByteLength; // Fetch string descriptors priv->hid->string_index[0] = priv->dev_descriptor.iManufacturer; if (priv->hid->string_index[0] != 0) { HidD_GetManufacturerString(hid_handle, priv->hid->string[0], sizeof(priv->hid->string[0])); } else { priv->hid->string[0][0] = 0; } priv->hid->string_index[1] = priv->dev_descriptor.iProduct; if (priv->hid->string_index[1] != 0) { HidD_GetProductString(hid_handle, priv->hid->string[1], sizeof(priv->hid->string[1])); } else { priv->hid->string[1][0] = 0; } priv->hid->string_index[2] = priv->dev_descriptor.iSerialNumber; if (priv->hid->string_index[2] != 0) { HidD_GetSerialNumberString(hid_handle, priv->hid->string[2], sizeof(priv->hid->string[2])); } else { priv->hid->string[2][0] = 0; } } while(0); if (preparsed_data) { HidD_FreePreparsedData(preparsed_data); } return LIBUSB_SUCCESS; } static void hid_close(int sub_api, struct libusb_device_handle *dev_handle) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); HANDLE file_handle; int i; if (!api_hid_available) return; for (i = 0; i < USB_MAXINTERFACES; i++) { if (priv->usb_interface[i].apib->id == USB_API_HID) { file_handle = handle_priv->interface_handle[i].api_handle; if ( (file_handle != 0) && (file_handle != INVALID_HANDLE_VALUE)) { CloseHandle(file_handle); } } } } static int hid_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface) { struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); CHECK_HID_AVAILABLE; // NB: Disconnection detection is not possible in this function if (priv->usb_interface[iface].path == NULL) { return LIBUSB_ERROR_NOT_FOUND; // invalid iface } // We use dev_handle as a flag for interface claimed if (handle_priv->interface_handle[iface].dev_handle == INTERFACE_CLAIMED) { return LIBUSB_ERROR_BUSY; // already claimed } handle_priv->interface_handle[iface].dev_handle = INTERFACE_CLAIMED; usbi_dbg("claimed interface %d", iface); handle_priv->active_interface = iface; return LIBUSB_SUCCESS; } static int hid_release_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface) { struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); CHECK_HID_AVAILABLE; if (priv->usb_interface[iface].path == NULL) { return LIBUSB_ERROR_NOT_FOUND; // invalid iface } if (handle_priv->interface_handle[iface].dev_handle != INTERFACE_CLAIMED) { return LIBUSB_ERROR_NOT_FOUND; // invalid iface } handle_priv->interface_handle[iface].dev_handle = INVALID_HANDLE_VALUE; return LIBUSB_SUCCESS; } static int hid_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, int iface, int altsetting) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); CHECK_HID_AVAILABLE; if (altsetting > 255) { return LIBUSB_ERROR_INVALID_PARAM; } if (altsetting != 0) { usbi_err(ctx, "set interface altsetting not supported for altsetting >0"); return LIBUSB_ERROR_NOT_SUPPORTED; } return LIBUSB_SUCCESS; } static int hid_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer; HANDLE hid_handle; struct winfd wfd; int current_interface, config; size_t size; int r = LIBUSB_ERROR_INVALID_PARAM; CHECK_HID_AVAILABLE; transfer_priv->pollable_fd = INVALID_WINFD; safe_free(transfer_priv->hid_buffer); transfer_priv->hid_dest = NULL; size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE; if (size > MAX_CTRL_BUFFER_LENGTH) { return LIBUSB_ERROR_INVALID_PARAM; } current_interface = get_valid_interface(transfer->dev_handle, USB_API_HID); if (current_interface < 0) { if (auto_claim(transfer, ¤t_interface, USB_API_HID) != LIBUSB_SUCCESS) { return LIBUSB_ERROR_NOT_FOUND; } } usbi_dbg("will use interface %d", current_interface); hid_handle = handle_priv->interface_handle[current_interface].api_handle; // Always use the handle returned from usbi_create_fd (wfd.handle) wfd = usbi_create_fd(hid_handle, RW_READ, NULL, NULL); if (wfd.fd < 0) { return LIBUSB_ERROR_NOT_FOUND; } switch(LIBUSB_REQ_TYPE(setup->request_type)) { case LIBUSB_REQUEST_TYPE_STANDARD: switch(setup->request) { case LIBUSB_REQUEST_GET_DESCRIPTOR: r = _hid_get_descriptor(priv->hid, wfd.handle, LIBUSB_REQ_RECIPIENT(setup->request_type), (setup->value >> 8) & 0xFF, setup->value & 0xFF, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, &size); break; case LIBUSB_REQUEST_GET_CONFIGURATION: r = windows_get_configuration(transfer->dev_handle, &config); if (r == LIBUSB_SUCCESS) { size = 1; ((uint8_t*)transfer->buffer)[LIBUSB_CONTROL_SETUP_SIZE] = (uint8_t)config; r = LIBUSB_COMPLETED; } break; case LIBUSB_REQUEST_SET_CONFIGURATION: if (setup->value == priv->active_config) { r = LIBUSB_COMPLETED; } else { usbi_warn(ctx, "cannot set configuration other than the default one"); r = LIBUSB_ERROR_NOT_SUPPORTED; } break; case LIBUSB_REQUEST_GET_INTERFACE: size = 1; ((uint8_t*)transfer->buffer)[LIBUSB_CONTROL_SETUP_SIZE] = 0; r = LIBUSB_COMPLETED; break; case LIBUSB_REQUEST_SET_INTERFACE: r = hid_set_interface_altsetting(0, transfer->dev_handle, setup->index, setup->value); if (r == LIBUSB_SUCCESS) { r = LIBUSB_COMPLETED; } break; default: usbi_warn(ctx, "unsupported HID control request"); r = LIBUSB_ERROR_NOT_SUPPORTED; break; } break; case LIBUSB_REQUEST_TYPE_CLASS: r =_hid_class_request(priv->hid, wfd.handle, setup->request_type, setup->request, setup->value, setup->index, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, transfer_priv, &size, wfd.overlapped); break; default: usbi_warn(ctx, "unsupported HID control request"); r = LIBUSB_ERROR_NOT_SUPPORTED; break; } if (r == LIBUSB_COMPLETED) { // Force request to be completed synchronously. Transferred size has been set by previous call wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; // http://msdn.microsoft.com/en-us/library/ms684342%28VS.85%29.aspx // set InternalHigh to the number of bytes transferred wfd.overlapped->InternalHigh = (DWORD)size; r = LIBUSB_SUCCESS; } if (r == LIBUSB_SUCCESS) { // Use priv_transfer to store data needed for async polling transfer_priv->pollable_fd = wfd; transfer_priv->interface_number = (uint8_t)current_interface; } else { usbi_free_fd(&wfd); } return r; } static int hid_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); struct winfd wfd; HANDLE hid_handle; bool direction_in, ret; int current_interface, length; DWORD size; int r = LIBUSB_SUCCESS; CHECK_HID_AVAILABLE; transfer_priv->pollable_fd = INVALID_WINFD; transfer_priv->hid_dest = NULL; safe_free(transfer_priv->hid_buffer); current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); if (current_interface < 0) { usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer"); return LIBUSB_ERROR_NOT_FOUND; } usbi_dbg("matched endpoint %02X with interface %d", transfer->endpoint, current_interface); hid_handle = handle_priv->interface_handle[current_interface].api_handle; direction_in = transfer->endpoint & LIBUSB_ENDPOINT_IN; wfd = usbi_create_fd(hid_handle, direction_in?RW_READ:RW_WRITE, NULL, NULL); // Always use the handle returned from usbi_create_fd (wfd.handle) if (wfd.fd < 0) { return LIBUSB_ERROR_NO_MEM; } // If report IDs are not in use, an extra prefix byte must be added if ( ((direction_in) && (!priv->hid->uses_report_ids[0])) || ((!direction_in) && (!priv->hid->uses_report_ids[1])) ) { length = transfer->length+1; } else { length = transfer->length; } // Add a trailing byte to detect overflows on input transfer_priv->hid_buffer = (uint8_t*)calloc(length+1, 1); if (transfer_priv->hid_buffer == NULL) { return LIBUSB_ERROR_NO_MEM; } transfer_priv->hid_expected_size = length; if (direction_in) { transfer_priv->hid_dest = transfer->buffer; usbi_dbg("reading %d bytes (report ID: 0x00)", length); ret = ReadFile(wfd.handle, transfer_priv->hid_buffer, length+1, &size, wfd.overlapped); } else { if (!priv->hid->uses_report_ids[1]) { memcpy(transfer_priv->hid_buffer+1, transfer->buffer, transfer->length); } else { // We could actually do without the calloc and memcpy in this case memcpy(transfer_priv->hid_buffer, transfer->buffer, transfer->length); } usbi_dbg("writing %d bytes (report ID: 0x%02X)", length, transfer_priv->hid_buffer[0]); ret = WriteFile(wfd.handle, transfer_priv->hid_buffer, length, &size, wfd.overlapped); } if (!ret) { if (GetLastError() != ERROR_IO_PENDING) { usbi_err(ctx, "HID transfer failed: %s", windows_error_str(0)); usbi_free_fd(&wfd); safe_free(transfer_priv->hid_buffer); return LIBUSB_ERROR_IO; } } else { // Only write operations that completed synchronously need to free up // hid_buffer. For reads, copy_transfer_data() handles that process. if (!direction_in) { safe_free(transfer_priv->hid_buffer); } if (size == 0) { usbi_err(ctx, "program assertion failed - no data was transferred"); size = 1; } if (size > (size_t)length) { usbi_err(ctx, "OVERFLOW!"); r = LIBUSB_ERROR_OVERFLOW; } wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY; wfd.overlapped->InternalHigh = size; } transfer_priv->pollable_fd = wfd; transfer_priv->interface_number = (uint8_t)current_interface; return r; } static int hid_abort_transfers(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_transfer_priv *transfer_priv = (struct windows_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); HANDLE hid_handle; int current_interface; CHECK_HID_AVAILABLE; current_interface = transfer_priv->interface_number; hid_handle = handle_priv->interface_handle[current_interface].api_handle; CancelIo(hid_handle); return LIBUSB_SUCCESS; } static int hid_reset_device(int sub_api, struct libusb_device_handle *dev_handle) { struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); HANDLE hid_handle; int current_interface; CHECK_HID_AVAILABLE; // Flushing the queues on all interfaces is the best we can achieve for (current_interface = 0; current_interface < USB_MAXINTERFACES; current_interface++) { hid_handle = handle_priv->interface_handle[current_interface].api_handle; if ((hid_handle != 0) && (hid_handle != INVALID_HANDLE_VALUE)) { HidD_FlushQueue(hid_handle); } } return LIBUSB_SUCCESS; } static int hid_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); HANDLE hid_handle; int current_interface; CHECK_HID_AVAILABLE; current_interface = interface_by_endpoint(priv, handle_priv, endpoint); if (current_interface < 0) { usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear"); return LIBUSB_ERROR_NOT_FOUND; } usbi_dbg("matched endpoint %02X with interface %d", endpoint, current_interface); hid_handle = handle_priv->interface_handle[current_interface].api_handle; // No endpoint selection with Microsoft's implementation, so we try to flush the // whole interface. Should be OK for most case scenarios if (!HidD_FlushQueue(hid_handle)) { usbi_err(ctx, "Flushing of HID queue failed: %s", windows_error_str(0)); // Device was probably disconnected return LIBUSB_ERROR_NO_DEVICE; } return LIBUSB_SUCCESS; } // This extra function is only needed for HID static int hid_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, uint32_t io_size) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); int r = LIBUSB_TRANSFER_COMPLETED; uint32_t corrected_size = io_size; if (transfer_priv->hid_buffer != NULL) { // If we have a valid hid_buffer, it means the transfer was async if (transfer_priv->hid_dest != NULL) { // Data readout if (corrected_size > 0) { // First, check for overflow if (corrected_size > transfer_priv->hid_expected_size) { usbi_err(ctx, "OVERFLOW!"); corrected_size = (uint32_t)transfer_priv->hid_expected_size; r = LIBUSB_TRANSFER_OVERFLOW; } if (transfer_priv->hid_buffer[0] == 0) { // Discard the 1 byte report ID prefix corrected_size--; memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer+1, corrected_size); } else { memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer, corrected_size); } } transfer_priv->hid_dest = NULL; } // For write, we just need to free the hid buffer safe_free(transfer_priv->hid_buffer); } itransfer->transferred += corrected_size; return r; } /* * Composite API functions */ static int composite_init(int sub_api, struct libusb_context *ctx) { return LIBUSB_SUCCESS; } static int composite_exit(int sub_api) { return LIBUSB_SUCCESS; } static int composite_open(int sub_api, struct libusb_device_handle *dev_handle) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); int r = LIBUSB_ERROR_NOT_FOUND; uint8_t i; // SUB_API_MAX+1 as the SUB_API_MAX pos is used to indicate availability of HID bool available[SUB_API_MAX+1] = {0}; for (i=0; iusb_interface[i].apib->id) { case USB_API_WINUSBX: if (priv->usb_interface[i].sub_api != SUB_API_NOTSET) available[priv->usb_interface[i].sub_api] = true; break; case USB_API_HID: available[SUB_API_MAX] = true; break; default: break; } } for (i=0; idev); uint8_t i; // SUB_API_MAX+1 as the SUB_API_MAX pos is used to indicate availability of HID bool available[SUB_API_MAX+1] = {0}; for (i=0; iusb_interface[i].apib->id) { case USB_API_WINUSBX: if (priv->usb_interface[i].sub_api != SUB_API_NOTSET) available[priv->usb_interface[i].sub_api] = true; break; case USB_API_HID: available[SUB_API_MAX] = true; break; default: break; } } for (i=0; idev); return priv->usb_interface[iface].apib-> claim_interface(priv->usb_interface[iface].sub_api, dev_handle, iface); } static int composite_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, int iface, int altsetting) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); return priv->usb_interface[iface].apib-> set_interface_altsetting(priv->usb_interface[iface].sub_api, dev_handle, iface, altsetting); } static int composite_release_interface(int sub_api, struct libusb_device_handle *dev_handle, int iface) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); return priv->usb_interface[iface].apib-> release_interface(priv->usb_interface[iface].sub_api, dev_handle, iface); } static int composite_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); struct libusb_config_descriptor *conf_desc; WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer; int iface, pass, r; // Interface shouldn't matter for control, but it does in practice, with Windows' // restrictions with regards to accessing HID keyboards and mice. Try to target // a specific interface first, if possible. switch (LIBUSB_REQ_RECIPIENT(setup->request_type)) { case LIBUSB_RECIPIENT_INTERFACE: iface = setup->index & 0xFF; break; case LIBUSB_RECIPIENT_ENDPOINT: r = libusb_get_config_descriptor(transfer->dev_handle->dev, (uint8_t)(priv->active_config-1), &conf_desc); if (r == LIBUSB_SUCCESS) { iface = get_interface_by_endpoint(conf_desc, (setup->index & 0xFF)); libusb_free_config_descriptor(conf_desc); break; } // Fall through if not able to determine interface default: iface = -1; break; } // Try and target a specific interface if the control setup indicates such if ((iface >= 0) && (iface < USB_MAXINTERFACES)) { usbi_dbg("attempting control transfer targeted to interface %d", iface); if (priv->usb_interface[iface].path != NULL) { r = priv->usb_interface[iface].apib->submit_control_transfer(priv->usb_interface[iface].sub_api, itransfer); if (r == LIBUSB_SUCCESS) { return r; } } } // Either not targeted to a specific interface or no luck in doing so. // Try a 2 pass approach with all interfaces. for (pass = 0; pass < 2; pass++) { for (iface = 0; iface < USB_MAXINTERFACES; iface++) { if (priv->usb_interface[iface].path != NULL) { if ((pass == 0) && (priv->usb_interface[iface].restricted_functionality)) { usbi_dbg("trying to skip restricted interface #%d (HID keyboard or mouse?)", iface); continue; } usbi_dbg("using interface %d", iface); r = priv->usb_interface[iface].apib->submit_control_transfer(priv->usb_interface[iface].sub_api, itransfer); // If not supported on this API, it may be supported on another, so don't give up yet!! if (r == LIBUSB_ERROR_NOT_SUPPORTED) { continue; } return r; } } } usbi_err(ctx, "no libusb supported interfaces to complete request"); return LIBUSB_ERROR_NOT_FOUND; } static int composite_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); int current_interface; current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); if (current_interface < 0) { usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer"); return LIBUSB_ERROR_NOT_FOUND; } return priv->usb_interface[current_interface].apib-> submit_bulk_transfer(priv->usb_interface[current_interface].sub_api, itransfer);} static int composite_submit_iso_transfer(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(transfer->dev_handle); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); int current_interface; current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); if (current_interface < 0) { usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer"); return LIBUSB_ERROR_NOT_FOUND; } return priv->usb_interface[current_interface].apib-> submit_iso_transfer(priv->usb_interface[current_interface].sub_api, itransfer);} static int composite_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint) { struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev); struct windows_device_handle_priv *handle_priv = _device_handle_priv(dev_handle); struct windows_device_priv *priv = _device_priv(dev_handle->dev); int current_interface; current_interface = interface_by_endpoint(priv, handle_priv, endpoint); if (current_interface < 0) { usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear"); return LIBUSB_ERROR_NOT_FOUND; } return priv->usb_interface[current_interface].apib-> clear_halt(priv->usb_interface[current_interface].sub_api, dev_handle, endpoint);} static int composite_abort_control(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); return priv->usb_interface[transfer_priv->interface_number].apib-> abort_control(priv->usb_interface[transfer_priv->interface_number].sub_api, itransfer);} static int composite_abort_transfers(int sub_api, struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); struct windows_device_priv *priv = _device_priv(transfer->dev_handle->dev); return priv->usb_interface[transfer_priv->interface_number].apib-> abort_transfers(priv->usb_interface[transfer_priv->interface_number].sub_api, itransfer);} static int composite_reset_device(int sub_api, struct libusb_device_handle *dev_handle) { struct windows_device_priv *priv = _device_priv(dev_handle->dev); int r; uint8_t i; bool available[SUB_API_MAX]; for (i = 0; iusb_interface[i].apib->id == USB_API_WINUSBX) && (priv->usb_interface[i].sub_api != SUB_API_NOTSET) ) { available[priv->usb_interface[i].sub_api] = true; } } for (i=0; idev_handle->dev); return priv->usb_interface[transfer_priv->interface_number].apib-> copy_transfer_data(priv->usb_interface[transfer_priv->interface_number].sub_api, itransfer, io_size); } release/libusb/libusb/os/threads_windows.c0000664000000000000000000000676414261476161017754 0ustar rootroot/* * libusb synchronization on Microsoft Windows * * Copyright © 2010 Michael Plante * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include "libusbi.h" struct usbi_cond_perthread { struct list_head list; HANDLE event; }; void usbi_mutex_static_lock(usbi_mutex_static_t *mutex) { while (InterlockedExchange(mutex, 1L) == 1L) SleepEx(0, TRUE); } void usbi_cond_init(usbi_cond_t *cond) { list_init(&cond->waiters); list_init(&cond->not_waiting); } static int usbi_cond_intwait(usbi_cond_t *cond, usbi_mutex_t *mutex, DWORD timeout_ms) { struct usbi_cond_perthread *pos; DWORD r; // Same assumption as usbi_cond_broadcast() holds if (list_empty(&cond->not_waiting)) { pos = malloc(sizeof(*pos)); if (pos == NULL) return ENOMEM; // This errno is not POSIX-allowed. pos->event = CreateEvent(NULL, FALSE, FALSE, NULL); // auto-reset. if (pos->event == NULL) { free(pos); return ENOMEM; } } else { pos = list_first_entry(&cond->not_waiting, struct usbi_cond_perthread, list); list_del(&pos->list); // remove from not_waiting list. // Ensure the event is clear before waiting WaitForSingleObject(pos->event, 0); } list_add(&pos->list, &cond->waiters); LeaveCriticalSection(mutex); r = WaitForSingleObject(pos->event, timeout_ms); EnterCriticalSection(mutex); list_del(&pos->list); list_add(&pos->list, &cond->not_waiting); if (r == WAIT_OBJECT_0) return 0; else if (r == WAIT_TIMEOUT) return ETIMEDOUT; else return EINVAL; } // N.B.: usbi_cond_*wait() can also return ENOMEM, even though pthread_cond_*wait cannot! int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex) { return usbi_cond_intwait(cond, mutex, INFINITE); } int usbi_cond_timedwait(usbi_cond_t *cond, usbi_mutex_t *mutex, const struct timeval *tv) { DWORD millis; millis = (DWORD)(tv->tv_sec * 1000) + (tv->tv_usec / 1000); /* round up to next millisecond */ if (tv->tv_usec % 1000) millis++; return usbi_cond_intwait(cond, mutex, millis); } void usbi_cond_broadcast(usbi_cond_t *cond) { // Assumes mutex is locked; this is not in keeping with POSIX spec, but // libusb does this anyway, so we simplify by not adding more sync // primitives to the CV definition! struct usbi_cond_perthread *pos; list_for_each_entry(pos, &cond->waiters, list, struct usbi_cond_perthread) SetEvent(pos->event); // The wait function will remove its respective item from the list. } void usbi_cond_destroy(usbi_cond_t *cond) { // This assumes no one is using this anymore. The check MAY NOT BE safe. struct usbi_cond_perthread *pos, *next; if (!list_empty(&cond->waiters)) return; // (!see above!) list_for_each_entry_safe(pos, next, &cond->not_waiting, list, struct usbi_cond_perthread) { CloseHandle(pos->event); list_del(&pos->list); free(pos); } } release/libusb/libusb/os/wince_usb.c0000664000000000000000000006554114261476161016524 0ustar rootroot/* * Windows CE backend for libusb 1.0 * Copyright © 2011-2013 RealVNC Ltd. * Large portions taken from Windows backend, which is * Copyright © 2009-2010 Pete Batard * With contributions from Michael Plante, Orin Eman et al. * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer * Major code testing contribution by Xiaofan Chen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "libusbi.h" #include "wince_usb.h" // Global variables int errno = 0; static uint64_t hires_frequency, hires_ticks_to_ps; static HANDLE driver_handle = INVALID_HANDLE_VALUE; static int concurrent_usage = -1; /* * Converts a windows error to human readable string * uses retval as errorcode, or, if 0, use GetLastError() */ #if defined(ENABLE_LOGGING) static const char *windows_error_str(DWORD error_code) { static TCHAR wErr_string[ERR_BUFFER_SIZE]; static char err_string[ERR_BUFFER_SIZE]; DWORD size; int len; if (error_code == 0) error_code = GetLastError(); len = sprintf(err_string, "[%u] ", (unsigned int)error_code); size = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), wErr_string, ERR_BUFFER_SIZE, NULL); if (size == 0) { DWORD format_error = GetLastError(); if (format_error) snprintf(err_string, ERR_BUFFER_SIZE, "Windows error code %u (FormatMessage error code %u)", (unsigned int)error_code, (unsigned int)format_error); else snprintf(err_string, ERR_BUFFER_SIZE, "Unknown error code %u", (unsigned int)error_code); } else { // Remove CR/LF terminators, if present size_t pos = size - 2; if (wErr_string[pos] == 0x0D) wErr_string[pos] = 0; if (!WideCharToMultiByte(CP_ACP, 0, wErr_string, -1, &err_string[len], ERR_BUFFER_SIZE - len, NULL, NULL)) strcpy(err_string, "Unable to convert error string"); } return err_string; } #endif static struct wince_device_priv *_device_priv(struct libusb_device *dev) { return (struct wince_device_priv *)dev->os_priv; } // ceusbkwrapper to libusb error code mapping static int translate_driver_error(DWORD error) { switch (error) { case ERROR_INVALID_PARAMETER: return LIBUSB_ERROR_INVALID_PARAM; case ERROR_CALL_NOT_IMPLEMENTED: case ERROR_NOT_SUPPORTED: return LIBUSB_ERROR_NOT_SUPPORTED; case ERROR_NOT_ENOUGH_MEMORY: return LIBUSB_ERROR_NO_MEM; case ERROR_INVALID_HANDLE: return LIBUSB_ERROR_NO_DEVICE; case ERROR_BUSY: return LIBUSB_ERROR_BUSY; // Error codes that are either unexpected, or have // no suitable LIBUSB_ERROR equivalent. case ERROR_CANCELLED: case ERROR_INTERNAL_ERROR: default: return LIBUSB_ERROR_OTHER; } } static BOOL init_dllimports(void) { DLL_GET_HANDLE(ceusbkwrapper); DLL_LOAD_FUNC(ceusbkwrapper, UkwOpenDriver, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwGetDeviceList, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwReleaseDeviceList, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwGetDeviceAddress, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwGetDeviceDescriptor, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwGetConfigDescriptor, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwCloseDriver, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwCancelTransfer, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwIssueControlTransfer, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwClaimInterface, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwReleaseInterface, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwSetInterfaceAlternateSetting, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwClearHaltHost, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwClearHaltDevice, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwGetConfig, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwSetConfig, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwResetDevice, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwKernelDriverActive, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwAttachKernelDriver, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwDetachKernelDriver, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwIssueBulkTransfer, TRUE); DLL_LOAD_FUNC(ceusbkwrapper, UkwIsPipeHalted, TRUE); return TRUE; } static void exit_dllimports(void) { DLL_FREE_HANDLE(ceusbkwrapper); } static int init_device( struct libusb_device *dev, UKW_DEVICE drv_dev, unsigned char bus_addr, unsigned char dev_addr) { struct wince_device_priv *priv = _device_priv(dev); int r = LIBUSB_SUCCESS; dev->bus_number = bus_addr; dev->device_address = dev_addr; priv->dev = drv_dev; if (!UkwGetDeviceDescriptor(priv->dev, &(priv->desc))) r = translate_driver_error(GetLastError()); return r; } // Internal API functions static int wince_init(struct libusb_context *ctx) { int r = LIBUSB_ERROR_OTHER; HANDLE semaphore; LARGE_INTEGER li_frequency; TCHAR sem_name[11 + 8 + 1]; // strlen("libusb_init") + (32-bit hex PID) + '\0' _stprintf(sem_name, _T("libusb_init%08X"), (unsigned int)(GetCurrentProcessId() & 0xFFFFFFFF)); semaphore = CreateSemaphore(NULL, 1, 1, sem_name); if (semaphore == NULL) { usbi_err(ctx, "could not create semaphore: %s", windows_error_str(0)); return LIBUSB_ERROR_NO_MEM; } // A successful wait brings our semaphore count to 0 (unsignaled) // => any concurent wait stalls until the semaphore's release if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) { usbi_err(ctx, "failure to access semaphore: %s", windows_error_str(0)); CloseHandle(semaphore); return LIBUSB_ERROR_NO_MEM; } // NB: concurrent usage supposes that init calls are equally balanced with // exit calls. If init is called more than exit, we will not exit properly if ( ++concurrent_usage == 0 ) { // First init? // Load DLL imports if (!init_dllimports()) { usbi_err(ctx, "could not resolve DLL functions"); r = LIBUSB_ERROR_NOT_SUPPORTED; goto init_exit; } // try to open a handle to the driver driver_handle = UkwOpenDriver(); if (driver_handle == INVALID_HANDLE_VALUE) { usbi_err(ctx, "could not connect to driver"); r = LIBUSB_ERROR_NOT_SUPPORTED; goto init_exit; } // find out if we have access to a monotonic (hires) timer if (QueryPerformanceFrequency(&li_frequency)) { hires_frequency = li_frequency.QuadPart; // The hires frequency can go as high as 4 GHz, so we'll use a conversion // to picoseconds to compute the tv_nsecs part in clock_gettime hires_ticks_to_ps = UINT64_C(1000000000000) / hires_frequency; usbi_dbg("hires timer available (Frequency: %"PRIu64" Hz)", hires_frequency); } else { usbi_dbg("no hires timer available on this platform"); hires_frequency = 0; hires_ticks_to_ps = UINT64_C(0); } } // At this stage, either we went through full init successfully, or didn't need to r = LIBUSB_SUCCESS; init_exit: // Holds semaphore here. if (!concurrent_usage && r != LIBUSB_SUCCESS) { // First init failed? exit_dllimports(); if (driver_handle != INVALID_HANDLE_VALUE) { UkwCloseDriver(driver_handle); driver_handle = INVALID_HANDLE_VALUE; } } if (r != LIBUSB_SUCCESS) --concurrent_usage; // Not expected to call libusb_exit if we failed. ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1 CloseHandle(semaphore); return r; } static void wince_exit(struct libusb_context *ctx) { HANDLE semaphore; TCHAR sem_name[11 + 8 + 1]; // strlen("libusb_init") + (32-bit hex PID) + '\0' UNUSED(ctx); _stprintf(sem_name, _T("libusb_init%08X"), (unsigned int)(GetCurrentProcessId() & 0xFFFFFFFF)); semaphore = CreateSemaphore(NULL, 1, 1, sem_name); if (semaphore == NULL) return; // A successful wait brings our semaphore count to 0 (unsignaled) // => any concurent wait stalls until the semaphore release if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) { CloseHandle(semaphore); return; } // Only works if exits and inits are balanced exactly if (--concurrent_usage < 0) { // Last exit exit_dllimports(); if (driver_handle != INVALID_HANDLE_VALUE) { UkwCloseDriver(driver_handle); driver_handle = INVALID_HANDLE_VALUE; } } ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1 CloseHandle(semaphore); } static int wince_get_device_list( struct libusb_context *ctx, struct discovered_devs **discdevs) { UKW_DEVICE devices[MAX_DEVICE_COUNT]; struct discovered_devs *new_devices = *discdevs; DWORD count = 0, i; struct libusb_device *dev = NULL; unsigned char bus_addr, dev_addr; unsigned long session_id; BOOL success; DWORD release_list_offset = 0; int r = LIBUSB_SUCCESS; success = UkwGetDeviceList(driver_handle, devices, MAX_DEVICE_COUNT, &count); if (!success) { int libusbErr = translate_driver_error(GetLastError()); usbi_err(ctx, "could not get devices: %s", windows_error_str(0)); return libusbErr; } for (i = 0; i < count; ++i) { release_list_offset = i; success = UkwGetDeviceAddress(devices[i], &bus_addr, &dev_addr, &session_id); if (!success) { r = translate_driver_error(GetLastError()); usbi_err(ctx, "could not get device address for %u: %s", (unsigned int)i, windows_error_str(0)); goto err_out; } dev = usbi_get_device_by_session_id(ctx, session_id); if (dev) { usbi_dbg("using existing device for %u/%u (session %lu)", bus_addr, dev_addr, session_id); // Release just this element in the device list (as we already hold a // reference to it). UkwReleaseDeviceList(driver_handle, &devices[i], 1); release_list_offset++; } else { usbi_dbg("allocating new device for %u/%u (session %lu)", bus_addr, dev_addr, session_id); dev = usbi_alloc_device(ctx, session_id); if (!dev) { r = LIBUSB_ERROR_NO_MEM; goto err_out; } r = init_device(dev, devices[i], bus_addr, dev_addr); if (r < 0) goto err_out; r = usbi_sanitize_device(dev); if (r < 0) goto err_out; } new_devices = discovered_devs_append(new_devices, dev); if (!new_devices) { r = LIBUSB_ERROR_NO_MEM; goto err_out; } libusb_unref_device(dev); } *discdevs = new_devices; return r; err_out: *discdevs = new_devices; libusb_unref_device(dev); // Release the remainder of the unprocessed device list. // The devices added to new_devices already will still be passed up to libusb, // which can dispose of them at its leisure. UkwReleaseDeviceList(driver_handle, &devices[release_list_offset], count - release_list_offset); return r; } static int wince_open(struct libusb_device_handle *handle) { // Nothing to do to open devices as a handle to it has // been retrieved by wince_get_device_list return LIBUSB_SUCCESS; } static void wince_close(struct libusb_device_handle *handle) { // Nothing to do as wince_open does nothing. } static int wince_get_device_descriptor( struct libusb_device *device, unsigned char *buffer, int *host_endian) { struct wince_device_priv *priv = _device_priv(device); *host_endian = 1; memcpy(buffer, &priv->desc, DEVICE_DESC_LENGTH); return LIBUSB_SUCCESS; } static int wince_get_active_config_descriptor( struct libusb_device *device, unsigned char *buffer, size_t len, int *host_endian) { struct wince_device_priv *priv = _device_priv(device); DWORD actualSize = len; *host_endian = 0; if (!UkwGetConfigDescriptor(priv->dev, UKW_ACTIVE_CONFIGURATION, buffer, len, &actualSize)) return translate_driver_error(GetLastError()); return actualSize; } static int wince_get_config_descriptor( struct libusb_device *device, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) { struct wince_device_priv *priv = _device_priv(device); DWORD actualSize = len; *host_endian = 0; if (!UkwGetConfigDescriptor(priv->dev, config_index, buffer, len, &actualSize)) return translate_driver_error(GetLastError()); return actualSize; } static int wince_get_configuration( struct libusb_device_handle *handle, int *config) { struct wince_device_priv *priv = _device_priv(handle->dev); UCHAR cv = 0; if (!UkwGetConfig(priv->dev, &cv)) return translate_driver_error(GetLastError()); (*config) = cv; return LIBUSB_SUCCESS; } static int wince_set_configuration( struct libusb_device_handle *handle, int config) { struct wince_device_priv *priv = _device_priv(handle->dev); // Setting configuration 0 places the device in Address state. // This should correspond to the "unconfigured state" required by // libusb when the specified configuration is -1. UCHAR cv = (config < 0) ? 0 : config; if (!UkwSetConfig(priv->dev, cv)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_claim_interface( struct libusb_device_handle *handle, int interface_number) { struct wince_device_priv *priv = _device_priv(handle->dev); if (!UkwClaimInterface(priv->dev, interface_number)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_release_interface( struct libusb_device_handle *handle, int interface_number) { struct wince_device_priv *priv = _device_priv(handle->dev); if (!UkwSetInterfaceAlternateSetting(priv->dev, interface_number, 0)) return translate_driver_error(GetLastError()); if (!UkwReleaseInterface(priv->dev, interface_number)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_set_interface_altsetting( struct libusb_device_handle *handle, int interface_number, int altsetting) { struct wince_device_priv *priv = _device_priv(handle->dev); if (!UkwSetInterfaceAlternateSetting(priv->dev, interface_number, altsetting)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_clear_halt( struct libusb_device_handle *handle, unsigned char endpoint) { struct wince_device_priv *priv = _device_priv(handle->dev); if (!UkwClearHaltHost(priv->dev, endpoint)) return translate_driver_error(GetLastError()); if (!UkwClearHaltDevice(priv->dev, endpoint)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_reset_device( struct libusb_device_handle *handle) { struct wince_device_priv *priv = _device_priv(handle->dev); if (!UkwResetDevice(priv->dev)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_kernel_driver_active( struct libusb_device_handle *handle, int interface_number) { struct wince_device_priv *priv = _device_priv(handle->dev); BOOL result = FALSE; if (!UkwKernelDriverActive(priv->dev, interface_number, &result)) return translate_driver_error(GetLastError()); return result ? 1 : 0; } static int wince_detach_kernel_driver( struct libusb_device_handle *handle, int interface_number) { struct wince_device_priv *priv = _device_priv(handle->dev); if (!UkwDetachKernelDriver(priv->dev, interface_number)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_attach_kernel_driver( struct libusb_device_handle *handle, int interface_number) { struct wince_device_priv *priv = _device_priv(handle->dev); if (!UkwAttachKernelDriver(priv->dev, interface_number)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static void wince_destroy_device(struct libusb_device *dev) { struct wince_device_priv *priv = _device_priv(dev); UkwReleaseDeviceList(driver_handle, &priv->dev, 1); } static void wince_clear_transfer_priv(struct usbi_transfer *itransfer) { struct wince_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); usbi_close(transfer_priv->pollable_fd.fd); transfer_priv->pollable_fd = INVALID_WINFD; } static int wince_cancel_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct wince_device_priv *priv = _device_priv(transfer->dev_handle->dev); struct wince_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); if (!UkwCancelTransfer(priv->dev, transfer_priv->pollable_fd.overlapped, UKW_TF_NO_WAIT)) return translate_driver_error(GetLastError()); return LIBUSB_SUCCESS; } static int wince_submit_control_or_bulk_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev); struct wince_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer); struct wince_device_priv *priv = _device_priv(transfer->dev_handle->dev); BOOL direction_in, ret; struct winfd wfd; DWORD flags; PUKW_CONTROL_HEADER setup = NULL; const BOOL control_transfer = transfer->type == LIBUSB_TRANSFER_TYPE_CONTROL; int r; if (control_transfer) { setup = (PUKW_CONTROL_HEADER) transfer->buffer; direction_in = setup->bmRequestType & LIBUSB_ENDPOINT_IN; } else { direction_in = transfer->endpoint & LIBUSB_ENDPOINT_IN; } flags = direction_in ? UKW_TF_IN_TRANSFER : UKW_TF_OUT_TRANSFER; flags |= UKW_TF_SHORT_TRANSFER_OK; wfd = usbi_create_fd(); if (wfd.fd < 0) return LIBUSB_ERROR_NO_MEM; r = usbi_add_pollfd(ctx, wfd.fd, direction_in ? POLLIN : POLLOUT); if (r) { usbi_close(wfd.fd); return r; } transfer_priv->pollable_fd = wfd; if (control_transfer) { // Split out control setup header and data buffer DWORD bufLen = transfer->length - sizeof(UKW_CONTROL_HEADER); PVOID buf = (PVOID) &transfer->buffer[sizeof(UKW_CONTROL_HEADER)]; ret = UkwIssueControlTransfer(priv->dev, flags, setup, buf, bufLen, &transfer->actual_length, wfd.overlapped); } else { ret = UkwIssueBulkTransfer(priv->dev, flags, transfer->endpoint, transfer->buffer, transfer->length, &transfer->actual_length, wfd.overlapped); } if (!ret) { int libusbErr = translate_driver_error(GetLastError()); usbi_err(ctx, "UkwIssue%sTransfer failed: error %u", control_transfer ? "Control" : "Bulk", (unsigned int)GetLastError()); usbi_remove_pollfd(ctx, wfd.fd); usbi_close(wfd.fd); transfer_priv->pollable_fd = INVALID_WINFD; return libusbErr; } return LIBUSB_SUCCESS; } static int wince_submit_transfer(struct usbi_transfer *itransfer) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: return wince_submit_control_or_bulk_transfer(itransfer); case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: case LIBUSB_TRANSFER_TYPE_BULK_STREAM: return LIBUSB_ERROR_NOT_SUPPORTED; default: usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); return LIBUSB_ERROR_INVALID_PARAM; } } static void wince_transfer_callback( struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); struct wince_transfer_priv *transfer_priv = (struct wince_transfer_priv*)usbi_transfer_get_os_priv(itransfer); struct wince_device_priv *priv = _device_priv(transfer->dev_handle->dev); int status; usbi_dbg("handling I/O completion with errcode %u", io_result); if (io_result == ERROR_NOT_SUPPORTED && transfer->type != LIBUSB_TRANSFER_TYPE_CONTROL) { /* For functional stalls, the WinCE USB layer (and therefore the USB Kernel Wrapper * Driver) will report USB_ERROR_STALL/ERROR_NOT_SUPPORTED in situations where the * endpoint isn't actually stalled. * * One example of this is that some devices will occasionally fail to reply to an IN * token. The WinCE USB layer carries on with the transaction until it is completed * (or cancelled) but then completes it with USB_ERROR_STALL. * * This code therefore needs to confirm that there really is a stall error, by both * checking the pipe status and requesting the endpoint status from the device. */ BOOL halted = FALSE; usbi_dbg("checking I/O completion with errcode ERROR_NOT_SUPPORTED is really a stall"); if (UkwIsPipeHalted(priv->dev, transfer->endpoint, &halted)) { /* Pipe status retrieved, so now request endpoint status by sending a GET_STATUS * control request to the device. This is done synchronously, which is a bit * naughty, but this is a special corner case. */ WORD wStatus = 0; DWORD written = 0; UKW_CONTROL_HEADER ctrlHeader; ctrlHeader.bmRequestType = LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_ENDPOINT_IN | LIBUSB_RECIPIENT_ENDPOINT; ctrlHeader.bRequest = LIBUSB_REQUEST_GET_STATUS; ctrlHeader.wValue = 0; ctrlHeader.wIndex = transfer->endpoint; ctrlHeader.wLength = sizeof(wStatus); if (UkwIssueControlTransfer(priv->dev, UKW_TF_IN_TRANSFER | UKW_TF_SEND_TO_ENDPOINT, &ctrlHeader, &wStatus, sizeof(wStatus), &written, NULL)) { if (written == sizeof(wStatus) && (wStatus & STATUS_HALT_FLAG) == 0) { if (!halted || UkwClearHaltHost(priv->dev, transfer->endpoint)) { usbi_dbg("Endpoint doesn't appear to be stalled, overriding error with success"); io_result = ERROR_SUCCESS; } else { usbi_dbg("Endpoint doesn't appear to be stalled, but the host is halted, changing error"); io_result = ERROR_IO_DEVICE; } } } } } switch(io_result) { case ERROR_SUCCESS: itransfer->transferred += io_size; status = LIBUSB_TRANSFER_COMPLETED; break; case ERROR_CANCELLED: usbi_dbg("detected transfer cancel"); status = LIBUSB_TRANSFER_CANCELLED; break; case ERROR_NOT_SUPPORTED: case ERROR_GEN_FAILURE: usbi_dbg("detected endpoint stall"); status = LIBUSB_TRANSFER_STALL; break; case ERROR_SEM_TIMEOUT: usbi_dbg("detected semaphore timeout"); status = LIBUSB_TRANSFER_TIMED_OUT; break; case ERROR_OPERATION_ABORTED: usbi_dbg("detected operation aborted"); status = LIBUSB_TRANSFER_CANCELLED; break; default: usbi_err(ITRANSFER_CTX(itransfer), "detected I/O error: %s", windows_error_str(io_result)); status = LIBUSB_TRANSFER_ERROR; break; } wince_clear_transfer_priv(itransfer); if (status == LIBUSB_TRANSFER_CANCELLED) usbi_handle_transfer_cancellation(itransfer); else usbi_handle_transfer_completion(itransfer, (enum libusb_transfer_status)status); } static void wince_handle_callback( struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size) { struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); switch (transfer->type) { case LIBUSB_TRANSFER_TYPE_CONTROL: case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: wince_transfer_callback (itransfer, io_result, io_size); break; case LIBUSB_TRANSFER_TYPE_BULK_STREAM: break; default: usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type); } } static int wince_handle_events( struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready) { struct wince_transfer_priv* transfer_priv = NULL; POLL_NFDS_TYPE i = 0; BOOL found = FALSE; struct usbi_transfer *itransfer; DWORD io_size, io_result; int r = LIBUSB_SUCCESS; usbi_mutex_lock(&ctx->open_devs_lock); for (i = 0; i < nfds && num_ready > 0; i++) { usbi_dbg("checking fd %d with revents = %04x", fds[i].fd, fds[i].revents); if (!fds[i].revents) continue; num_ready--; // Because a Windows OVERLAPPED is used for poll emulation, // a pollable fd is created and stored with each transfer usbi_mutex_lock(&ctx->flying_transfers_lock); list_for_each_entry(itransfer, &ctx->flying_transfers, list, struct usbi_transfer) { transfer_priv = usbi_transfer_get_os_priv(itransfer); if (transfer_priv->pollable_fd.fd == fds[i].fd) { found = TRUE; break; } } usbi_mutex_unlock(&ctx->flying_transfers_lock); if (found && HasOverlappedIoCompleted(transfer_priv->pollable_fd.overlapped)) { io_result = (DWORD)transfer_priv->pollable_fd.overlapped->Internal; io_size = (DWORD)transfer_priv->pollable_fd.overlapped->InternalHigh; usbi_remove_pollfd(ctx, transfer_priv->pollable_fd.fd); // let handle_callback free the event using the transfer wfd // If you don't use the transfer wfd, you run a risk of trying to free a // newly allocated wfd that took the place of the one from the transfer. wince_handle_callback(itransfer, io_result, io_size); } else if (found) { usbi_err(ctx, "matching transfer for fd %d has not completed", fds[i]); r = LIBUSB_ERROR_OTHER; break; } else { usbi_err(ctx, "could not find a matching transfer for fd %d", fds[i]); r = LIBUSB_ERROR_NOT_FOUND; break; } } usbi_mutex_unlock(&ctx->open_devs_lock); return r; } /* * Monotonic and real time functions */ static int wince_clock_gettime(int clk_id, struct timespec *tp) { LARGE_INTEGER hires_counter; ULARGE_INTEGER rtime; FILETIME filetime; SYSTEMTIME st; switch(clk_id) { case USBI_CLOCK_MONOTONIC: if (hires_frequency != 0 && QueryPerformanceCounter(&hires_counter)) { tp->tv_sec = (long)(hires_counter.QuadPart / hires_frequency); tp->tv_nsec = (long)(((hires_counter.QuadPart % hires_frequency) / 1000) * hires_ticks_to_ps); return LIBUSB_SUCCESS; } // Fall through and return real-time if monotonic read failed or was not detected @ init case USBI_CLOCK_REALTIME: // We follow http://msdn.microsoft.com/en-us/library/ms724928%28VS.85%29.aspx // with a predef epoch time to have an epoch that starts at 1970.01.01 00:00 // Note however that our resolution is bounded by the Windows system time // functions and is at best of the order of 1 ms (or, usually, worse) GetSystemTime(&st); SystemTimeToFileTime(&st, &filetime); rtime.LowPart = filetime.dwLowDateTime; rtime.HighPart = filetime.dwHighDateTime; rtime.QuadPart -= EPOCH_TIME; tp->tv_sec = (long)(rtime.QuadPart / 10000000); tp->tv_nsec = (long)((rtime.QuadPart % 10000000)*100); return LIBUSB_SUCCESS; default: return LIBUSB_ERROR_INVALID_PARAM; } } const struct usbi_os_backend usbi_backend = { "Windows CE", 0, wince_init, wince_exit, NULL, /* set_option() */ wince_get_device_list, NULL, /* hotplug_poll */ wince_open, wince_close, wince_get_device_descriptor, wince_get_active_config_descriptor, wince_get_config_descriptor, NULL, /* get_config_descriptor_by_value() */ wince_get_configuration, wince_set_configuration, wince_claim_interface, wince_release_interface, wince_set_interface_altsetting, wince_clear_halt, wince_reset_device, NULL, /* alloc_streams */ NULL, /* free_streams */ NULL, /* dev_mem_alloc() */ NULL, /* dev_mem_free() */ wince_kernel_driver_active, wince_detach_kernel_driver, wince_attach_kernel_driver, wince_destroy_device, wince_submit_transfer, wince_cancel_transfer, wince_clear_transfer_priv, wince_handle_events, NULL, /* handle_transfer_completion() */ wince_clock_gettime, 0, sizeof(struct wince_device_priv), 0, sizeof(struct wince_transfer_priv), }; release/libusb/libusb/os/windows_usb.h0000664000000000000000000007772214261476161017122 0ustar rootroot/* * Windows backend for libusb 1.0 * Copyright © 2009-2012 Pete Batard * With contributions from Michael Plante, Orin Eman et al. * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer * Major code testing contribution by Xiaofan Chen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #pragma once #include "windows_common.h" #if defined(_MSC_VER) // disable /W4 MSVC warnings that are benign #pragma warning(disable:4100) // unreferenced formal parameter #pragma warning(disable:4127) // conditional expression is constant #pragma warning(disable:4201) // nameless struct/union #pragma warning(disable:4214) // bit field types other than int #pragma warning(disable:4996) // deprecated API calls #pragma warning(disable:28159) // more deprecated API calls #endif // Missing from MSVC6 setupapi.h #if !defined(SPDRP_ADDRESS) #define SPDRP_ADDRESS 28 #endif #if !defined(SPDRP_INSTALL_STATE) #define SPDRP_INSTALL_STATE 34 #endif // Missing from MinGW #if !defined(FACILITY_SETUPAPI) #define FACILITY_SETUPAPI 15 #endif #if defined(__CYGWIN__ ) #define _stricmp stricmp #define _snprintf snprintf #define _strdup strdup // _beginthreadex is MSVCRT => unavailable for cygwin. Fallback to using CreateThread #define _beginthreadex(a, b, c, d, e, f) CreateThread(a, b, (LPTHREAD_START_ROUTINE)c, d, e, f) #endif #define MAX_CTRL_BUFFER_LENGTH 4096 #define MAX_USB_DEVICES 256 #define MAX_USB_STRING_LENGTH 128 #define MAX_HID_REPORT_SIZE 1024 #define MAX_HID_DESCRIPTOR_SIZE 256 #define MAX_GUID_STRING_LENGTH 40 #define MAX_PATH_LENGTH 128 #define MAX_KEY_LENGTH 256 #define LIST_SEPARATOR ';' #define HTAB_SIZE 1021 // Handle code for HID interface that have been claimed ("dibs") #define INTERFACE_CLAIMED ((HANDLE)(intptr_t)0xD1B5) // Additional return code for HID operations that completed synchronously #define LIBUSB_COMPLETED (LIBUSB_SUCCESS + 1) // http://msdn.microsoft.com/en-us/library/ff545978.aspx // http://msdn.microsoft.com/en-us/library/ff545972.aspx // http://msdn.microsoft.com/en-us/library/ff545982.aspx #if !defined(GUID_DEVINTERFACE_USB_HOST_CONTROLLER) const GUID GUID_DEVINTERFACE_USB_HOST_CONTROLLER = { 0x3ABF6F2D, 0x71C4, 0x462A, {0x8A, 0x92, 0x1E, 0x68, 0x61, 0xE6, 0xAF, 0x27} }; #endif #if !defined(GUID_DEVINTERFACE_USB_DEVICE) const GUID GUID_DEVINTERFACE_USB_DEVICE = { 0xA5DCBF10, 0x6530, 0x11D2, {0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED} }; #endif #if !defined(GUID_DEVINTERFACE_USB_HUB) const GUID GUID_DEVINTERFACE_USB_HUB = { 0xF18A0E88, 0xC30C, 0x11D0, {0x88, 0x15, 0x00, 0xA0, 0xC9, 0x06, 0xBE, 0xD8} }; #endif #if !defined(GUID_DEVINTERFACE_LIBUSB0_FILTER) const GUID GUID_DEVINTERFACE_LIBUSB0_FILTER = { 0xF9F3FF14, 0xAE21, 0x48A0, {0x8A, 0x25, 0x80, 0x11, 0xA7, 0xA9, 0x31, 0xD9} }; #endif /* * Multiple USB API backend support */ #define USB_API_UNSUPPORTED 0 #define USB_API_HUB 1 #define USB_API_COMPOSITE 2 #define USB_API_WINUSBX 3 #define USB_API_HID 4 #define USB_API_MAX 5 // The following is used to indicate if the HID or composite extra props have already been set. #define USB_API_SET (1<os_priv; } static inline void windows_device_priv_init(libusb_device* dev) { struct windows_device_priv* p = _device_priv(dev); int i; p->depth = 0; p->port = 0; p->parent_dev = NULL; p->path = NULL; p->apib = &usb_api_backend[USB_API_UNSUPPORTED]; p->sub_api = SUB_API_NOTSET; p->hid = NULL; p->active_config = 0; p->config_descriptor = NULL; memset(&(p->dev_descriptor), 0, sizeof(USB_DEVICE_DESCRIPTOR)); for (i=0; iusb_interface[i].path = NULL; p->usb_interface[i].apib = &usb_api_backend[USB_API_UNSUPPORTED]; p->usb_interface[i].sub_api = SUB_API_NOTSET; p->usb_interface[i].nb_endpoints = 0; p->usb_interface[i].endpoint = NULL; p->usb_interface[i].restricted_functionality = false; } } static inline void windows_device_priv_release(libusb_device* dev) { struct windows_device_priv* p = _device_priv(dev); int i; safe_free(p->path); if ((dev->num_configurations > 0) && (p->config_descriptor != NULL)) { for (i=0; i < dev->num_configurations; i++) safe_free(p->config_descriptor[i]); } safe_free(p->config_descriptor); safe_free(p->hid); for (i=0; iusb_interface[i].path); safe_free(p->usb_interface[i].endpoint); } } struct interface_handle_t { HANDLE dev_handle; // WinUSB needs an extra handle for the file HANDLE api_handle; // used by the API to communicate with the device }; struct windows_device_handle_priv { int active_interface; struct interface_handle_t interface_handle[USB_MAXINTERFACES]; int autoclaim_count[USB_MAXINTERFACES]; // For auto-release }; static inline struct windows_device_handle_priv *_device_handle_priv( struct libusb_device_handle *handle) { return (struct windows_device_handle_priv *) handle->os_priv; } // used for async polling functions struct windows_transfer_priv { struct winfd pollable_fd; uint8_t interface_number; uint8_t *hid_buffer; // 1 byte extended data buffer, required for HID uint8_t *hid_dest; // transfer buffer destination, required for HID size_t hid_expected_size; }; // used to match a device driver (including filter drivers) against a supported API struct driver_lookup { char list[MAX_KEY_LENGTH+1];// REG_MULTI_SZ list of services (driver) names const DWORD reg_prop; // SPDRP registry key to use to retreive list const char* designation; // internal designation (for debug output) }; #define WM_TIMER_REQUEST (WM_USER + 1) #define WM_TIMER_EXIT (WM_USER + 2) // used for monotonic clock_gettime() struct timer_request { struct timespec *tp; HANDLE event; }; /* OLE32 dependency */ DLL_DECLARE_PREFIXED(WINAPI, HRESULT, p, CLSIDFromString, (LPCOLESTR, LPCLSID)); /* This call is only available from XP SP2 */ DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, IsWow64Process, (HANDLE, PBOOL)); /* SetupAPI dependencies */ DLL_DECLARE_PREFIXED(WINAPI, HDEVINFO, p, SetupDiGetClassDevsA, (const GUID*, PCSTR, HWND, DWORD)); DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiEnumDeviceInfo, (HDEVINFO, DWORD, PSP_DEVINFO_DATA)); DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiEnumDeviceInterfaces, (HDEVINFO, PSP_DEVINFO_DATA, const GUID*, DWORD, PSP_DEVICE_INTERFACE_DATA)); DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiGetDeviceInterfaceDetailA, (HDEVINFO, PSP_DEVICE_INTERFACE_DATA, PSP_DEVICE_INTERFACE_DETAIL_DATA_A, DWORD, PDWORD, PSP_DEVINFO_DATA)); DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiDestroyDeviceInfoList, (HDEVINFO)); DLL_DECLARE_PREFIXED(WINAPI, HKEY, p, SetupDiOpenDevRegKey, (HDEVINFO, PSP_DEVINFO_DATA, DWORD, DWORD, DWORD, REGSAM)); DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiGetDeviceRegistryPropertyA, (HDEVINFO, PSP_DEVINFO_DATA, DWORD, PDWORD, PBYTE, DWORD, PDWORD)); DLL_DECLARE_PREFIXED(WINAPI, HKEY, p, SetupDiOpenDeviceInterfaceRegKey, (HDEVINFO, PSP_DEVICE_INTERFACE_DATA, DWORD, DWORD)); DLL_DECLARE_PREFIXED(WINAPI, LONG, p, RegQueryValueExW, (HKEY, LPCWSTR, LPDWORD, LPDWORD, LPBYTE, LPDWORD)); DLL_DECLARE_PREFIXED(WINAPI, LONG, p, RegCloseKey, (HKEY)); /* User32 dependencies */ DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, GetMessageA, (LPMSG, HWND, UINT, UINT)); DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, PeekMessageA, (LPMSG, HWND, UINT, UINT, UINT)); DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, PostThreadMessageA, (DWORD, UINT, WPARAM, LPARAM)); /* * Windows DDK API definitions. Most of it copied from MinGW's includes */ typedef DWORD DEVNODE, DEVINST; typedef DEVNODE *PDEVNODE, *PDEVINST; typedef DWORD RETURN_TYPE; typedef RETURN_TYPE CONFIGRET; #define CR_SUCCESS 0x00000000 #define CR_NO_SUCH_DEVNODE 0x0000000D #define USB_DEVICE_DESCRIPTOR_TYPE LIBUSB_DT_DEVICE #define USB_CONFIGURATION_DESCRIPTOR_TYPE LIBUSB_DT_CONFIG #define USB_STRING_DESCRIPTOR_TYPE LIBUSB_DT_STRING #define USB_INTERFACE_DESCRIPTOR_TYPE LIBUSB_DT_INTERFACE #define USB_ENDPOINT_DESCRIPTOR_TYPE LIBUSB_DT_ENDPOINT #define USB_REQUEST_GET_STATUS LIBUSB_REQUEST_GET_STATUS #define USB_REQUEST_CLEAR_FEATURE LIBUSB_REQUEST_CLEAR_FEATURE #define USB_REQUEST_SET_FEATURE LIBUSB_REQUEST_SET_FEATURE #define USB_REQUEST_SET_ADDRESS LIBUSB_REQUEST_SET_ADDRESS #define USB_REQUEST_GET_DESCRIPTOR LIBUSB_REQUEST_GET_DESCRIPTOR #define USB_REQUEST_SET_DESCRIPTOR LIBUSB_REQUEST_SET_DESCRIPTOR #define USB_REQUEST_GET_CONFIGURATION LIBUSB_REQUEST_GET_CONFIGURATION #define USB_REQUEST_SET_CONFIGURATION LIBUSB_REQUEST_SET_CONFIGURATION #define USB_REQUEST_GET_INTERFACE LIBUSB_REQUEST_GET_INTERFACE #define USB_REQUEST_SET_INTERFACE LIBUSB_REQUEST_SET_INTERFACE #define USB_REQUEST_SYNC_FRAME LIBUSB_REQUEST_SYNCH_FRAME #define USB_GET_NODE_INFORMATION 258 #define USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION 260 #define USB_GET_NODE_CONNECTION_NAME 261 #define USB_GET_HUB_CAPABILITIES 271 #if !defined(USB_GET_NODE_CONNECTION_INFORMATION_EX) #define USB_GET_NODE_CONNECTION_INFORMATION_EX 274 #endif #if !defined(USB_GET_HUB_CAPABILITIES_EX) #define USB_GET_HUB_CAPABILITIES_EX 276 #endif #if !defined(USB_GET_NODE_CONNECTION_INFORMATION_EX_V2) #define USB_GET_NODE_CONNECTION_INFORMATION_EX_V2 279 #endif #ifndef METHOD_BUFFERED #define METHOD_BUFFERED 0 #endif #ifndef FILE_ANY_ACCESS #define FILE_ANY_ACCESS 0x00000000 #endif #ifndef FILE_DEVICE_UNKNOWN #define FILE_DEVICE_UNKNOWN 0x00000022 #endif #ifndef FILE_DEVICE_USB #define FILE_DEVICE_USB FILE_DEVICE_UNKNOWN #endif #ifndef CTL_CODE #define CTL_CODE(DeviceType, Function, Method, Access)( \ ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method)) #endif typedef enum USB_CONNECTION_STATUS { NoDeviceConnected, DeviceConnected, DeviceFailedEnumeration, DeviceGeneralFailure, DeviceCausedOvercurrent, DeviceNotEnoughPower, DeviceNotEnoughBandwidth, DeviceHubNestedTooDeeply, DeviceInLegacyHub } USB_CONNECTION_STATUS, *PUSB_CONNECTION_STATUS; typedef enum USB_HUB_NODE { UsbHub, UsbMIParent } USB_HUB_NODE; /* Cfgmgr32.dll interface */ DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Parent, (PDEVINST, DEVINST, ULONG)); DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Child, (PDEVINST, DEVINST, ULONG)); DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Sibling, (PDEVINST, DEVINST, ULONG)); DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Device_IDA, (DEVINST, PCHAR, ULONG, ULONG)); #define IOCTL_USB_GET_HUB_CAPABILITIES_EX \ CTL_CODE( FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES_EX, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_HUB_CAPABILITIES \ CTL_CODE(FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION \ CTL_CODE(FILE_DEVICE_USB, USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_ROOT_HUB_NAME \ CTL_CODE(FILE_DEVICE_USB, HCD_GET_ROOT_HUB_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_NODE_INFORMATION \ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX \ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_INFORMATION_EX, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX_V2 \ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_INFORMATION_EX_V2, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_NODE_CONNECTION_ATTRIBUTES \ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_ATTRIBUTES, METHOD_BUFFERED, FILE_ANY_ACCESS) #define IOCTL_USB_GET_NODE_CONNECTION_NAME \ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS) // Most of the structures below need to be packed #pragma pack(push, 1) typedef struct USB_INTERFACE_DESCRIPTOR { UCHAR bLength; UCHAR bDescriptorType; UCHAR bInterfaceNumber; UCHAR bAlternateSetting; UCHAR bNumEndpoints; UCHAR bInterfaceClass; UCHAR bInterfaceSubClass; UCHAR bInterfaceProtocol; UCHAR iInterface; } USB_INTERFACE_DESCRIPTOR, *PUSB_INTERFACE_DESCRIPTOR; typedef struct USB_CONFIGURATION_DESCRIPTOR { UCHAR bLength; UCHAR bDescriptorType; USHORT wTotalLength; UCHAR bNumInterfaces; UCHAR bConfigurationValue; UCHAR iConfiguration; UCHAR bmAttributes; UCHAR MaxPower; } USB_CONFIGURATION_DESCRIPTOR, *PUSB_CONFIGURATION_DESCRIPTOR; typedef struct USB_CONFIGURATION_DESCRIPTOR_SHORT { struct { ULONG ConnectionIndex; struct { UCHAR bmRequest; UCHAR bRequest; USHORT wValue; USHORT wIndex; USHORT wLength; } SetupPacket; } req; USB_CONFIGURATION_DESCRIPTOR data; } USB_CONFIGURATION_DESCRIPTOR_SHORT; typedef struct USB_ENDPOINT_DESCRIPTOR { UCHAR bLength; UCHAR bDescriptorType; UCHAR bEndpointAddress; UCHAR bmAttributes; USHORT wMaxPacketSize; UCHAR bInterval; } USB_ENDPOINT_DESCRIPTOR, *PUSB_ENDPOINT_DESCRIPTOR; typedef struct USB_DESCRIPTOR_REQUEST { ULONG ConnectionIndex; struct { UCHAR bmRequest; UCHAR bRequest; USHORT wValue; USHORT wIndex; USHORT wLength; } SetupPacket; // UCHAR Data[0]; } USB_DESCRIPTOR_REQUEST, *PUSB_DESCRIPTOR_REQUEST; typedef struct USB_HUB_DESCRIPTOR { UCHAR bDescriptorLength; UCHAR bDescriptorType; UCHAR bNumberOfPorts; USHORT wHubCharacteristics; UCHAR bPowerOnToPowerGood; UCHAR bHubControlCurrent; UCHAR bRemoveAndPowerMask[64]; } USB_HUB_DESCRIPTOR, *PUSB_HUB_DESCRIPTOR; typedef struct USB_ROOT_HUB_NAME { ULONG ActualLength; WCHAR RootHubName[1]; } USB_ROOT_HUB_NAME, *PUSB_ROOT_HUB_NAME; typedef struct USB_ROOT_HUB_NAME_FIXED { ULONG ActualLength; WCHAR RootHubName[MAX_PATH_LENGTH]; } USB_ROOT_HUB_NAME_FIXED; typedef struct USB_NODE_CONNECTION_NAME { ULONG ConnectionIndex; ULONG ActualLength; WCHAR NodeName[1]; } USB_NODE_CONNECTION_NAME, *PUSB_NODE_CONNECTION_NAME; typedef struct USB_NODE_CONNECTION_NAME_FIXED { ULONG ConnectionIndex; ULONG ActualLength; WCHAR NodeName[MAX_PATH_LENGTH]; } USB_NODE_CONNECTION_NAME_FIXED; typedef struct USB_HUB_NAME_FIXED { union { USB_ROOT_HUB_NAME_FIXED root; USB_NODE_CONNECTION_NAME_FIXED node; } u; } USB_HUB_NAME_FIXED; typedef struct USB_HUB_INFORMATION { USB_HUB_DESCRIPTOR HubDescriptor; BOOLEAN HubIsBusPowered; } USB_HUB_INFORMATION, *PUSB_HUB_INFORMATION; typedef struct USB_MI_PARENT_INFORMATION { ULONG NumberOfInterfaces; } USB_MI_PARENT_INFORMATION, *PUSB_MI_PARENT_INFORMATION; typedef struct USB_NODE_INFORMATION { USB_HUB_NODE NodeType; union { USB_HUB_INFORMATION HubInformation; USB_MI_PARENT_INFORMATION MiParentInformation; } u; } USB_NODE_INFORMATION, *PUSB_NODE_INFORMATION; typedef struct USB_PIPE_INFO { USB_ENDPOINT_DESCRIPTOR EndpointDescriptor; ULONG ScheduleOffset; } USB_PIPE_INFO, *PUSB_PIPE_INFO; typedef struct USB_NODE_CONNECTION_INFORMATION_EX { ULONG ConnectionIndex; USB_DEVICE_DESCRIPTOR DeviceDescriptor; UCHAR CurrentConfigurationValue; UCHAR Speed; BOOLEAN DeviceIsHub; USHORT DeviceAddress; ULONG NumberOfOpenPipes; USB_CONNECTION_STATUS ConnectionStatus; // USB_PIPE_INFO PipeList[0]; } USB_NODE_CONNECTION_INFORMATION_EX, *PUSB_NODE_CONNECTION_INFORMATION_EX; typedef union _USB_PROTOCOLS { ULONG ul; struct { ULONG Usb110:1; ULONG Usb200:1; ULONG Usb300:1; ULONG ReservedMBZ:29; }; } USB_PROTOCOLS, *PUSB_PROTOCOLS; typedef union _USB_NODE_CONNECTION_INFORMATION_EX_V2_FLAGS { ULONG ul; struct { ULONG DeviceIsOperatingAtSuperSpeedOrHigher:1; ULONG DeviceIsSuperSpeedCapableOrHigher:1; ULONG ReservedMBZ:30; }; } USB_NODE_CONNECTION_INFORMATION_EX_V2_FLAGS, *PUSB_NODE_CONNECTION_INFORMATION_EX_V2_FLAGS; typedef struct _USB_NODE_CONNECTION_INFORMATION_EX_V2 { ULONG ConnectionIndex; ULONG Length; USB_PROTOCOLS SupportedUsbProtocols; USB_NODE_CONNECTION_INFORMATION_EX_V2_FLAGS Flags; } USB_NODE_CONNECTION_INFORMATION_EX_V2, *PUSB_NODE_CONNECTION_INFORMATION_EX_V2; typedef struct USB_HUB_CAP_FLAGS { ULONG HubIsHighSpeedCapable:1; ULONG HubIsHighSpeed:1; ULONG HubIsMultiTtCapable:1; ULONG HubIsMultiTt:1; ULONG HubIsRoot:1; ULONG HubIsArmedWakeOnConnect:1; ULONG ReservedMBZ:26; } USB_HUB_CAP_FLAGS, *PUSB_HUB_CAP_FLAGS; typedef struct USB_HUB_CAPABILITIES { ULONG HubIs2xCapable : 1; } USB_HUB_CAPABILITIES, *PUSB_HUB_CAPABILITIES; typedef struct USB_HUB_CAPABILITIES_EX { USB_HUB_CAP_FLAGS CapabilityFlags; } USB_HUB_CAPABILITIES_EX, *PUSB_HUB_CAPABILITIES_EX; #pragma pack(pop) /* winusb.dll interface */ #define SHORT_PACKET_TERMINATE 0x01 #define AUTO_CLEAR_STALL 0x02 #define PIPE_TRANSFER_TIMEOUT 0x03 #define IGNORE_SHORT_PACKETS 0x04 #define ALLOW_PARTIAL_READS 0x05 #define AUTO_FLUSH 0x06 #define RAW_IO 0x07 #define MAXIMUM_TRANSFER_SIZE 0x08 #define AUTO_SUSPEND 0x81 #define SUSPEND_DELAY 0x83 #define DEVICE_SPEED 0x01 #define LowSpeed 0x01 #define FullSpeed 0x02 #define HighSpeed 0x03 typedef enum USBD_PIPE_TYPE { UsbdPipeTypeControl, UsbdPipeTypeIsochronous, UsbdPipeTypeBulk, UsbdPipeTypeInterrupt } USBD_PIPE_TYPE; typedef struct { USBD_PIPE_TYPE PipeType; UCHAR PipeId; USHORT MaximumPacketSize; UCHAR Interval; } WINUSB_PIPE_INFORMATION, *PWINUSB_PIPE_INFORMATION; #pragma pack(1) typedef struct { UCHAR request_type; UCHAR request; USHORT value; USHORT index; USHORT length; } WINUSB_SETUP_PACKET, *PWINUSB_SETUP_PACKET; #pragma pack() typedef void *WINUSB_INTERFACE_HANDLE, *PWINUSB_INTERFACE_HANDLE; typedef BOOL (WINAPI *WinUsb_AbortPipe_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR PipeID ); typedef BOOL (WINAPI *WinUsb_ControlTransfer_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, WINUSB_SETUP_PACKET SetupPacket, PUCHAR Buffer, ULONG BufferLength, PULONG LengthTransferred, LPOVERLAPPED Overlapped ); typedef BOOL (WINAPI *WinUsb_FlushPipe_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR PipeID ); typedef BOOL (WINAPI *WinUsb_Free_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle ); typedef BOOL (WINAPI *WinUsb_GetAssociatedInterface_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR AssociatedInterfaceIndex, PWINUSB_INTERFACE_HANDLE AssociatedInterfaceHandle ); typedef BOOL (WINAPI *WinUsb_GetCurrentAlternateSetting_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, PUCHAR AlternateSetting ); typedef BOOL (WINAPI *WinUsb_GetDescriptor_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR DescriptorType, UCHAR Index, USHORT LanguageID, PUCHAR Buffer, ULONG BufferLength, PULONG LengthTransferred ); typedef BOOL (WINAPI *WinUsb_GetOverlappedResult_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, LPOVERLAPPED lpOverlapped, LPDWORD lpNumberOfBytesTransferred, BOOL bWait ); typedef BOOL (WINAPI *WinUsb_GetPipePolicy_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR PipeID, ULONG PolicyType, PULONG ValueLength, PVOID Value ); typedef BOOL (WINAPI *WinUsb_GetPowerPolicy_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, ULONG PolicyType, PULONG ValueLength, PVOID Value ); typedef BOOL (WINAPI *WinUsb_Initialize_t)( HANDLE DeviceHandle, PWINUSB_INTERFACE_HANDLE InterfaceHandle ); typedef BOOL (WINAPI *WinUsb_QueryDeviceInformation_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, ULONG InformationType, PULONG BufferLength, PVOID Buffer ); typedef BOOL (WINAPI *WinUsb_QueryInterfaceSettings_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR AlternateSettingNumber, PUSB_INTERFACE_DESCRIPTOR UsbAltInterfaceDescriptor ); typedef BOOL (WINAPI *WinUsb_QueryPipe_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR AlternateInterfaceNumber, UCHAR PipeIndex, PWINUSB_PIPE_INFORMATION PipeInformation ); typedef BOOL (WINAPI *WinUsb_ReadPipe_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR PipeID, PUCHAR Buffer, ULONG BufferLength, PULONG LengthTransferred, LPOVERLAPPED Overlapped ); typedef BOOL (WINAPI *WinUsb_ResetPipe_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR PipeID ); typedef BOOL (WINAPI *WinUsb_SetCurrentAlternateSetting_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR AlternateSetting ); typedef BOOL (WINAPI *WinUsb_SetPipePolicy_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR PipeID, ULONG PolicyType, ULONG ValueLength, PVOID Value ); typedef BOOL (WINAPI *WinUsb_SetPowerPolicy_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, ULONG PolicyType, ULONG ValueLength, PVOID Value ); typedef BOOL (WINAPI *WinUsb_WritePipe_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle, UCHAR PipeID, PUCHAR Buffer, ULONG BufferLength, PULONG LengthTransferred, LPOVERLAPPED Overlapped ); typedef BOOL (WINAPI *WinUsb_ResetDevice_t)( WINUSB_INTERFACE_HANDLE InterfaceHandle ); /* /!\ These must match the ones from the official libusbk.h */ typedef enum _KUSB_FNID { KUSB_FNID_Init, KUSB_FNID_Free, KUSB_FNID_ClaimInterface, KUSB_FNID_ReleaseInterface, KUSB_FNID_SetAltInterface, KUSB_FNID_GetAltInterface, KUSB_FNID_GetDescriptor, KUSB_FNID_ControlTransfer, KUSB_FNID_SetPowerPolicy, KUSB_FNID_GetPowerPolicy, KUSB_FNID_SetConfiguration, KUSB_FNID_GetConfiguration, KUSB_FNID_ResetDevice, KUSB_FNID_Initialize, KUSB_FNID_SelectInterface, KUSB_FNID_GetAssociatedInterface, KUSB_FNID_Clone, KUSB_FNID_QueryInterfaceSettings, KUSB_FNID_QueryDeviceInformation, KUSB_FNID_SetCurrentAlternateSetting, KUSB_FNID_GetCurrentAlternateSetting, KUSB_FNID_QueryPipe, KUSB_FNID_SetPipePolicy, KUSB_FNID_GetPipePolicy, KUSB_FNID_ReadPipe, KUSB_FNID_WritePipe, KUSB_FNID_ResetPipe, KUSB_FNID_AbortPipe, KUSB_FNID_FlushPipe, KUSB_FNID_IsoReadPipe, KUSB_FNID_IsoWritePipe, KUSB_FNID_GetCurrentFrameNumber, KUSB_FNID_GetOverlappedResult, KUSB_FNID_GetProperty, KUSB_FNID_COUNT, } KUSB_FNID; typedef struct _KLIB_VERSION { INT Major; INT Minor; INT Micro; INT Nano; } KLIB_VERSION; typedef KLIB_VERSION* PKLIB_VERSION; typedef BOOL (WINAPI *LibK_GetProcAddress_t)( PVOID* ProcAddress, ULONG DriverID, ULONG FunctionID ); typedef VOID (WINAPI *LibK_GetVersion_t)( PKLIB_VERSION Version ); struct winusb_interface { bool initialized; WinUsb_AbortPipe_t AbortPipe; WinUsb_ControlTransfer_t ControlTransfer; WinUsb_FlushPipe_t FlushPipe; WinUsb_Free_t Free; WinUsb_GetAssociatedInterface_t GetAssociatedInterface; WinUsb_GetCurrentAlternateSetting_t GetCurrentAlternateSetting; WinUsb_GetDescriptor_t GetDescriptor; WinUsb_GetOverlappedResult_t GetOverlappedResult; WinUsb_GetPipePolicy_t GetPipePolicy; WinUsb_GetPowerPolicy_t GetPowerPolicy; WinUsb_Initialize_t Initialize; WinUsb_QueryDeviceInformation_t QueryDeviceInformation; WinUsb_QueryInterfaceSettings_t QueryInterfaceSettings; WinUsb_QueryPipe_t QueryPipe; WinUsb_ReadPipe_t ReadPipe; WinUsb_ResetPipe_t ResetPipe; WinUsb_SetCurrentAlternateSetting_t SetCurrentAlternateSetting; WinUsb_SetPipePolicy_t SetPipePolicy; WinUsb_SetPowerPolicy_t SetPowerPolicy; WinUsb_WritePipe_t WritePipe; WinUsb_ResetDevice_t ResetDevice; }; /* hid.dll interface */ #define HIDP_STATUS_SUCCESS 0x110000 typedef void* PHIDP_PREPARSED_DATA; #pragma pack(1) typedef struct { ULONG Size; USHORT VendorID; USHORT ProductID; USHORT VersionNumber; } HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES; #pragma pack() typedef USHORT USAGE; typedef struct { USAGE Usage; USAGE UsagePage; USHORT InputReportByteLength; USHORT OutputReportByteLength; USHORT FeatureReportByteLength; USHORT Reserved[17]; USHORT NumberLinkCollectionNodes; USHORT NumberInputButtonCaps; USHORT NumberInputValueCaps; USHORT NumberInputDataIndices; USHORT NumberOutputButtonCaps; USHORT NumberOutputValueCaps; USHORT NumberOutputDataIndices; USHORT NumberFeatureButtonCaps; USHORT NumberFeatureValueCaps; USHORT NumberFeatureDataIndices; } HIDP_CAPS, *PHIDP_CAPS; typedef enum _HIDP_REPORT_TYPE { HidP_Input, HidP_Output, HidP_Feature } HIDP_REPORT_TYPE; typedef struct _HIDP_VALUE_CAPS { USAGE UsagePage; UCHAR ReportID; BOOLEAN IsAlias; USHORT BitField; USHORT LinkCollection; USAGE LinkUsage; USAGE LinkUsagePage; BOOLEAN IsRange; BOOLEAN IsStringRange; BOOLEAN IsDesignatorRange; BOOLEAN IsAbsolute; BOOLEAN HasNull; UCHAR Reserved; USHORT BitSize; USHORT ReportCount; USHORT Reserved2[5]; ULONG UnitsExp; ULONG Units; LONG LogicalMin, LogicalMax; LONG PhysicalMin, PhysicalMax; union { struct { USAGE UsageMin, UsageMax; USHORT StringMin, StringMax; USHORT DesignatorMin, DesignatorMax; USHORT DataIndexMin, DataIndexMax; } Range; struct { USAGE Usage, Reserved1; USHORT StringIndex, Reserved2; USHORT DesignatorIndex, Reserved3; USHORT DataIndex, Reserved4; } NotRange; } u; } HIDP_VALUE_CAPS, *PHIDP_VALUE_CAPS; DLL_DECLARE(WINAPI, BOOL, HidD_GetAttributes, (HANDLE, PHIDD_ATTRIBUTES)); DLL_DECLARE(WINAPI, VOID, HidD_GetHidGuid, (LPGUID)); DLL_DECLARE(WINAPI, BOOL, HidD_GetPreparsedData, (HANDLE, PHIDP_PREPARSED_DATA *)); DLL_DECLARE(WINAPI, BOOL, HidD_FreePreparsedData, (PHIDP_PREPARSED_DATA)); DLL_DECLARE(WINAPI, BOOL, HidD_GetManufacturerString, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_GetProductString, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_GetSerialNumberString, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, LONG, HidP_GetCaps, (PHIDP_PREPARSED_DATA, PHIDP_CAPS)); DLL_DECLARE(WINAPI, BOOL, HidD_SetNumInputBuffers, (HANDLE, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_SetFeature, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_GetFeature, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_GetPhysicalDescriptor, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_GetInputReport, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_SetOutputReport, (HANDLE, PVOID, ULONG)); DLL_DECLARE(WINAPI, BOOL, HidD_FlushQueue, (HANDLE)); DLL_DECLARE(WINAPI, BOOL, HidP_GetValueCaps, (HIDP_REPORT_TYPE, PHIDP_VALUE_CAPS, PULONG, PHIDP_PREPARSED_DATA)); release/libusb/libusb/os/windows_common.h0000664000000000000000000001000514261476161017576 0ustar rootroot/* * Windows backend common header for libusb 1.0 * * This file brings together header code common between * the desktop Windows and Windows CE backends. * Copyright © 2012-2013 RealVNC Ltd. * Copyright © 2009-2012 Pete Batard * With contributions from Michael Plante, Orin Eman et al. * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer * Major code testing contribution by Xiaofan Chen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #pragma once // Windows API default is uppercase - ugh! #if !defined(bool) #define bool BOOL #endif #if !defined(true) #define true TRUE #endif #if !defined(false) #define false FALSE #endif #define EPOCH_TIME UINT64_C(116444736000000000) // 1970.01.01 00:00:000 in MS Filetime #if defined(__CYGWIN__ ) #define _stricmp strcasecmp #define _strdup strdup // _beginthreadex is MSVCRT => unavailable for cygwin. 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See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ #pragma once #if defined(_MSC_VER) // disable /W4 MSVC warnings that are benign #pragma warning(disable:4127) // conditional expression is constant #endif // Handle synchronous completion through the overlapped structure #if !defined(STATUS_REPARSE) // reuse the REPARSE status code #define STATUS_REPARSE ((LONG)0x00000104L) #endif #define STATUS_COMPLETED_SYNCHRONOUSLY STATUS_REPARSE #if defined(_WIN32_WCE) // WinCE doesn't have a HasOverlappedIoCompleted() macro, so attempt to emulate it #define HasOverlappedIoCompleted(lpOverlapped) (((DWORD)(lpOverlapped)->Internal) != STATUS_PENDING) #endif #define HasOverlappedIoCompletedSync(lpOverlapped) (((DWORD)(lpOverlapped)->Internal) == STATUS_COMPLETED_SYNCHRONOUSLY) #define DUMMY_HANDLE ((HANDLE)(LONG_PTR)-2) #define MAX_FDS 256 #define POLLIN 0x0001 /* There is data to read */ #define POLLPRI 0x0002 /* There is urgent data to read */ #define POLLOUT 0x0004 /* Writing now will not block */ #define POLLERR 0x0008 /* Error condition */ #define POLLHUP 0x0010 /* Hung up */ #define POLLNVAL 0x0020 /* Invalid request: fd not open */ struct pollfd { int fd; 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rootroot/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */ /* * USB descriptor handling functions for libusb * Copyright © 2007 Daniel Drake * Copyright © 2001 Johannes Erdfelt * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "libusbi.h" #define DESC_HEADER_LENGTH 2 #define DEVICE_DESC_LENGTH 18 #define CONFIG_DESC_LENGTH 9 #define INTERFACE_DESC_LENGTH 9 #define ENDPOINT_DESC_LENGTH 7 #define ENDPOINT_AUDIO_DESC_LENGTH 9 /** @defgroup libusb_desc USB descriptors * This page details how to examine the various standard USB descriptors * for detected devices */ /* set host_endian if the w values are already in host endian format, * as opposed to bus endian. */ int usbi_parse_descriptor(const unsigned char *source, const char *descriptor, void *dest, int host_endian) { const unsigned char *sp = source; unsigned char *dp = dest; uint16_t w; const char *cp; uint32_t d; for (cp = descriptor; *cp; cp++) { switch (*cp) { case 'b': /* 8-bit byte */ *dp++ = *sp++; break; case 'w': /* 16-bit word, convert from little endian to CPU */ dp += ((uintptr_t)dp & 1); /* Align to word boundary */ if (host_endian) { memcpy(dp, sp, 2); } else { w = (sp[1] << 8) | sp[0]; *((uint16_t *)dp) = w; } sp += 2; dp += 2; break; case 'd': /* 32-bit word, convert from little endian to CPU */ dp += ((uintptr_t)dp & 1); /* Align to word boundary */ if (host_endian) { memcpy(dp, sp, 4); } else { d = (sp[3] << 24) | (sp[2] << 16) | (sp[1] << 8) | sp[0]; *((uint32_t *)dp) = d; } sp += 4; dp += 4; break; case 'u': /* 16 byte UUID */ memcpy(dp, sp, 16); sp += 16; dp += 16; break; } } return (int) (sp - source); } static void clear_endpoint(struct libusb_endpoint_descriptor *endpoint) { free((void *) endpoint->extra); } static int parse_endpoint(struct libusb_context *ctx, struct libusb_endpoint_descriptor *endpoint, unsigned char *buffer, int size, int host_endian) { struct usb_descriptor_header header; unsigned char *extra; unsigned char *begin; int parsed = 0; int len; if (size < DESC_HEADER_LENGTH) { usbi_err(ctx, "short endpoint descriptor read %d/%d", size, DESC_HEADER_LENGTH); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(buffer, "bb", &header, 0); if (header.bDescriptorType != LIBUSB_DT_ENDPOINT) { usbi_err(ctx, "unexpected descriptor %x (expected %x)", header.bDescriptorType, LIBUSB_DT_ENDPOINT); return parsed; } if (header.bLength > size) { usbi_warn(ctx, "short endpoint descriptor read %d/%d", size, header.bLength); return parsed; } if (header.bLength >= ENDPOINT_AUDIO_DESC_LENGTH) usbi_parse_descriptor(buffer, "bbbbwbbb", endpoint, host_endian); else if (header.bLength >= ENDPOINT_DESC_LENGTH) usbi_parse_descriptor(buffer, "bbbbwb", endpoint, host_endian); else { usbi_err(ctx, "invalid endpoint bLength (%d)", header.bLength); return LIBUSB_ERROR_IO; } buffer += header.bLength; size -= header.bLength; parsed += header.bLength; /* Skip over the rest of the Class Specific or Vendor Specific */ /* descriptors */ begin = buffer; while (size >= DESC_HEADER_LENGTH) { usbi_parse_descriptor(buffer, "bb", &header, 0); if (header.bLength < DESC_HEADER_LENGTH) { usbi_err(ctx, "invalid extra ep desc len (%d)", header.bLength); return LIBUSB_ERROR_IO; } else if (header.bLength > size) { usbi_warn(ctx, "short extra ep desc read %d/%d", size, header.bLength); return parsed; } /* If we find another "proper" descriptor then we're done */ if ((header.bDescriptorType == LIBUSB_DT_ENDPOINT) || (header.bDescriptorType == LIBUSB_DT_INTERFACE) || (header.bDescriptorType == LIBUSB_DT_CONFIG) || (header.bDescriptorType == LIBUSB_DT_DEVICE)) break; usbi_dbg("skipping descriptor %x", header.bDescriptorType); buffer += header.bLength; size -= header.bLength; parsed += header.bLength; } /* Copy any unknown descriptors into a storage area for drivers */ /* to later parse */ len = (int)(buffer - begin); if (!len) { endpoint->extra = NULL; endpoint->extra_length = 0; return parsed; } extra = malloc(len); endpoint->extra = extra; if (!extra) { endpoint->extra_length = 0; return LIBUSB_ERROR_NO_MEM; } memcpy(extra, begin, len); endpoint->extra_length = len; return parsed; } static void clear_interface(struct libusb_interface *usb_interface) { int i; int j; if (usb_interface->altsetting) { for (i = 0; i < usb_interface->num_altsetting; i++) { struct libusb_interface_descriptor *ifp = (struct libusb_interface_descriptor *) usb_interface->altsetting + i; free((void *) ifp->extra); if (ifp->endpoint) { for (j = 0; j < ifp->bNumEndpoints; j++) clear_endpoint((struct libusb_endpoint_descriptor *) ifp->endpoint + j); } free((void *) ifp->endpoint); } } free((void *) usb_interface->altsetting); usb_interface->altsetting = NULL; } static int parse_interface(libusb_context *ctx, struct libusb_interface *usb_interface, unsigned char *buffer, int size, int host_endian) { int i; int len; int r; int parsed = 0; int interface_number = -1; struct usb_descriptor_header header; struct libusb_interface_descriptor *ifp; unsigned char *begin; usb_interface->num_altsetting = 0; while (size >= INTERFACE_DESC_LENGTH) { struct libusb_interface_descriptor *altsetting = (struct libusb_interface_descriptor *) usb_interface->altsetting; altsetting = usbi_reallocf(altsetting, sizeof(struct libusb_interface_descriptor) * (usb_interface->num_altsetting + 1)); if (!altsetting) { r = LIBUSB_ERROR_NO_MEM; goto err; } usb_interface->altsetting = altsetting; ifp = altsetting + usb_interface->num_altsetting; usbi_parse_descriptor(buffer, "bbbbbbbbb", ifp, 0); if (ifp->bDescriptorType != LIBUSB_DT_INTERFACE) { usbi_err(ctx, "unexpected descriptor %x (expected %x)", ifp->bDescriptorType, LIBUSB_DT_INTERFACE); return parsed; } if (ifp->bLength < INTERFACE_DESC_LENGTH) { usbi_err(ctx, "invalid interface bLength (%d)", ifp->bLength); r = LIBUSB_ERROR_IO; goto err; } if (ifp->bLength > size) { usbi_warn(ctx, "short intf descriptor read %d/%d", size, ifp->bLength); return parsed; } if (ifp->bNumEndpoints > USB_MAXENDPOINTS) { usbi_err(ctx, "too many endpoints (%d)", ifp->bNumEndpoints); r = LIBUSB_ERROR_IO; goto err; } usb_interface->num_altsetting++; ifp->extra = NULL; ifp->extra_length = 0; ifp->endpoint = NULL; if (interface_number == -1) interface_number = ifp->bInterfaceNumber; /* Skip over the interface */ buffer += ifp->bLength; parsed += ifp->bLength; size -= ifp->bLength; begin = buffer; /* Skip over any interface, class or vendor descriptors */ while (size >= DESC_HEADER_LENGTH) { usbi_parse_descriptor(buffer, "bb", &header, 0); if (header.bLength < DESC_HEADER_LENGTH) { usbi_err(ctx, "invalid extra intf desc len (%d)", header.bLength); r = LIBUSB_ERROR_IO; goto err; } else if (header.bLength > size) { usbi_warn(ctx, "short extra intf desc read %d/%d", size, header.bLength); return parsed; } /* If we find another "proper" descriptor then we're done */ if ((header.bDescriptorType == LIBUSB_DT_INTERFACE) || (header.bDescriptorType == LIBUSB_DT_ENDPOINT) || (header.bDescriptorType == LIBUSB_DT_CONFIG) || (header.bDescriptorType == LIBUSB_DT_DEVICE)) break; buffer += header.bLength; parsed += header.bLength; size -= header.bLength; } /* Copy any unknown descriptors into a storage area for */ /* drivers to later parse */ len = (int)(buffer - begin); if (len) { ifp->extra = malloc(len); if (!ifp->extra) { r = LIBUSB_ERROR_NO_MEM; goto err; } memcpy((unsigned char *) ifp->extra, begin, len); ifp->extra_length = len; } if (ifp->bNumEndpoints > 0) { struct libusb_endpoint_descriptor *endpoint; endpoint = calloc(ifp->bNumEndpoints, sizeof(struct libusb_endpoint_descriptor)); ifp->endpoint = endpoint; if (!endpoint) { r = LIBUSB_ERROR_NO_MEM; goto err; } for (i = 0; i < ifp->bNumEndpoints; i++) { r = parse_endpoint(ctx, endpoint + i, buffer, size, host_endian); if (r < 0) goto err; if (r == 0) { ifp->bNumEndpoints = (uint8_t)i; break; } buffer += r; parsed += r; size -= r; } } /* We check to see if it's an alternate to this one */ ifp = (struct libusb_interface_descriptor *) buffer; if (size < LIBUSB_DT_INTERFACE_SIZE || ifp->bDescriptorType != LIBUSB_DT_INTERFACE || ifp->bInterfaceNumber != interface_number) return parsed; } return parsed; err: clear_interface(usb_interface); return r; } static void clear_configuration(struct libusb_config_descriptor *config) { int i; if (config->interface) { for (i = 0; i < config->bNumInterfaces; i++) clear_interface((struct libusb_interface *) config->interface + i); } free((void *) config->interface); free((void *) config->extra); } static int parse_configuration(struct libusb_context *ctx, struct libusb_config_descriptor *config, unsigned char *buffer, int size, int host_endian) { int i; int r; struct usb_descriptor_header header; struct libusb_interface *usb_interface; if (size < LIBUSB_DT_CONFIG_SIZE) { usbi_err(ctx, "short config descriptor read %d/%d", size, LIBUSB_DT_CONFIG_SIZE); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(buffer, "bbwbbbbb", config, host_endian); if (config->bDescriptorType != LIBUSB_DT_CONFIG) { usbi_err(ctx, "unexpected descriptor %x (expected %x)", config->bDescriptorType, LIBUSB_DT_CONFIG); return LIBUSB_ERROR_IO; } if (config->bLength < LIBUSB_DT_CONFIG_SIZE) { usbi_err(ctx, "invalid config bLength (%d)", config->bLength); return LIBUSB_ERROR_IO; } if (config->bLength > size) { usbi_err(ctx, "short config descriptor read %d/%d", size, config->bLength); return LIBUSB_ERROR_IO; } if (config->bNumInterfaces > USB_MAXINTERFACES) { usbi_err(ctx, "too many interfaces (%d)", config->bNumInterfaces); return LIBUSB_ERROR_IO; } usb_interface = calloc(config->bNumInterfaces, sizeof(struct libusb_interface)); config->interface = usb_interface; if (!usb_interface) return LIBUSB_ERROR_NO_MEM; buffer += config->bLength; size -= config->bLength; config->extra = NULL; config->extra_length = 0; for (i = 0; i < config->bNumInterfaces; i++) { int len; unsigned char *begin; /* Skip over the rest of the Class Specific or Vendor */ /* Specific descriptors */ begin = buffer; while (size >= DESC_HEADER_LENGTH) { usbi_parse_descriptor(buffer, "bb", &header, 0); if (header.bLength < DESC_HEADER_LENGTH) { usbi_err(ctx, "invalid extra config desc len (%d)", header.bLength); r = LIBUSB_ERROR_IO; goto err; } else if (header.bLength > size) { usbi_warn(ctx, "short extra config desc read %d/%d", size, header.bLength); config->bNumInterfaces = (uint8_t)i; return size; } /* If we find another "proper" descriptor then we're done */ if ((header.bDescriptorType == LIBUSB_DT_ENDPOINT) || (header.bDescriptorType == LIBUSB_DT_INTERFACE) || (header.bDescriptorType == LIBUSB_DT_CONFIG) || (header.bDescriptorType == LIBUSB_DT_DEVICE)) break; usbi_dbg("skipping descriptor 0x%x", header.bDescriptorType); buffer += header.bLength; size -= header.bLength; } /* Copy any unknown descriptors into a storage area for */ /* drivers to later parse */ len = (int)(buffer - begin); if (len) { /* FIXME: We should realloc and append here */ if (!config->extra_length) { config->extra = malloc(len); if (!config->extra) { r = LIBUSB_ERROR_NO_MEM; goto err; } memcpy((unsigned char *) config->extra, begin, len); config->extra_length = len; } } r = parse_interface(ctx, usb_interface + i, buffer, size, host_endian); if (r < 0) goto err; if (r == 0) { config->bNumInterfaces = (uint8_t)i; break; } buffer += r; size -= r; } return size; err: clear_configuration(config); return r; } static int raw_desc_to_config(struct libusb_context *ctx, unsigned char *buf, int size, int host_endian, struct libusb_config_descriptor **config) { struct libusb_config_descriptor *_config = malloc(sizeof(*_config)); int r; if (!_config) return LIBUSB_ERROR_NO_MEM; r = parse_configuration(ctx, _config, buf, size, host_endian); if (r < 0) { usbi_err(ctx, "parse_configuration failed with error %d", r); free(_config); return r; } else if (r > 0) { usbi_warn(ctx, "still %d bytes of descriptor data left", r); } *config = _config; return LIBUSB_SUCCESS; } int usbi_device_cache_descriptor(libusb_device *dev) { int r, host_endian = 0; r = usbi_backend.get_device_descriptor(dev, (unsigned char *) &dev->device_descriptor, &host_endian); if (r < 0) return r; if (!host_endian) { dev->device_descriptor.bcdUSB = libusb_le16_to_cpu(dev->device_descriptor.bcdUSB); dev->device_descriptor.idVendor = libusb_le16_to_cpu(dev->device_descriptor.idVendor); dev->device_descriptor.idProduct = libusb_le16_to_cpu(dev->device_descriptor.idProduct); dev->device_descriptor.bcdDevice = libusb_le16_to_cpu(dev->device_descriptor.bcdDevice); } return LIBUSB_SUCCESS; } /** \ingroup libusb_desc * Get the USB device descriptor for a given device. * * This is a non-blocking function; the device descriptor is cached in memory. * * Note since libusb-1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102, this * function always succeeds. * * \param dev the device * \param desc output location for the descriptor data * \returns 0 on success or a LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_get_device_descriptor(libusb_device *dev, struct libusb_device_descriptor *desc) { usbi_dbg(""); memcpy((unsigned char *) desc, (unsigned char *) &dev->device_descriptor, sizeof (dev->device_descriptor)); return 0; } /** \ingroup libusb_desc * Get the USB configuration descriptor for the currently active configuration. * This is a non-blocking function which does not involve any requests being * sent to the device. * * \param dev a device * \param config output location for the USB configuration descriptor. Only * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() * after use. * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state * \returns another LIBUSB_ERROR code on error * \see libusb_get_config_descriptor */ int API_EXPORTED libusb_get_active_config_descriptor(libusb_device *dev, struct libusb_config_descriptor **config) { struct libusb_config_descriptor _config; unsigned char tmp[LIBUSB_DT_CONFIG_SIZE]; unsigned char *buf = NULL; int host_endian = 0; int r; r = usbi_backend.get_active_config_descriptor(dev, tmp, LIBUSB_DT_CONFIG_SIZE, &host_endian); if (r < 0) return r; if (r < LIBUSB_DT_CONFIG_SIZE) { usbi_err(dev->ctx, "short config descriptor read %d/%d", r, LIBUSB_DT_CONFIG_SIZE); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(tmp, "bbw", &_config, host_endian); buf = malloc(_config.wTotalLength); if (!buf) return LIBUSB_ERROR_NO_MEM; r = usbi_backend.get_active_config_descriptor(dev, buf, _config.wTotalLength, &host_endian); if (r >= 0) r = raw_desc_to_config(dev->ctx, buf, r, host_endian, config); free(buf); return r; } /** \ingroup libusb_desc * Get a USB configuration descriptor based on its index. * This is a non-blocking function which does not involve any requests being * sent to the device. * * \param dev a device * \param config_index the index of the configuration you wish to retrieve * \param config output location for the USB configuration descriptor. Only * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() * after use. * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist * \returns another LIBUSB_ERROR code on error * \see libusb_get_active_config_descriptor() * \see libusb_get_config_descriptor_by_value() */ int API_EXPORTED libusb_get_config_descriptor(libusb_device *dev, uint8_t config_index, struct libusb_config_descriptor **config) { struct libusb_config_descriptor _config; unsigned char tmp[LIBUSB_DT_CONFIG_SIZE]; unsigned char *buf = NULL; int host_endian = 0; int r; usbi_dbg("index %d", config_index); if (config_index >= dev->num_configurations) return LIBUSB_ERROR_NOT_FOUND; r = usbi_backend.get_config_descriptor(dev, config_index, tmp, LIBUSB_DT_CONFIG_SIZE, &host_endian); if (r < 0) return r; if (r < LIBUSB_DT_CONFIG_SIZE) { usbi_err(dev->ctx, "short config descriptor read %d/%d", r, LIBUSB_DT_CONFIG_SIZE); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(tmp, "bbw", &_config, host_endian); buf = malloc(_config.wTotalLength); if (!buf) return LIBUSB_ERROR_NO_MEM; r = usbi_backend.get_config_descriptor(dev, config_index, buf, _config.wTotalLength, &host_endian); if (r >= 0) r = raw_desc_to_config(dev->ctx, buf, r, host_endian, config); free(buf); return r; } /* iterate through all configurations, returning the index of the configuration * matching a specific bConfigurationValue in the idx output parameter, or -1 * if the config was not found. * returns 0 on success or a LIBUSB_ERROR code */ int usbi_get_config_index_by_value(struct libusb_device *dev, uint8_t bConfigurationValue, int *idx) { uint8_t i; usbi_dbg("value %d", bConfigurationValue); for (i = 0; i < dev->num_configurations; i++) { unsigned char tmp[6]; int host_endian; int r = usbi_backend.get_config_descriptor(dev, i, tmp, sizeof(tmp), &host_endian); if (r < 0) { *idx = -1; return r; } if (tmp[5] == bConfigurationValue) { *idx = i; return 0; } } *idx = -1; return 0; } /** \ingroup libusb_desc * Get a USB configuration descriptor with a specific bConfigurationValue. * This is a non-blocking function which does not involve any requests being * sent to the device. * * \param dev a device * \param bConfigurationValue the bConfigurationValue of the configuration you * wish to retrieve * \param config output location for the USB configuration descriptor. Only * valid if 0 was returned. Must be freed with libusb_free_config_descriptor() * after use. * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist * \returns another LIBUSB_ERROR code on error * \see libusb_get_active_config_descriptor() * \see libusb_get_config_descriptor() */ int API_EXPORTED libusb_get_config_descriptor_by_value(libusb_device *dev, uint8_t bConfigurationValue, struct libusb_config_descriptor **config) { int r, idx, host_endian; unsigned char *buf = NULL; if (usbi_backend.get_config_descriptor_by_value) { r = usbi_backend.get_config_descriptor_by_value(dev, bConfigurationValue, &buf, &host_endian); if (r < 0) return r; return raw_desc_to_config(dev->ctx, buf, r, host_endian, config); } r = usbi_get_config_index_by_value(dev, bConfigurationValue, &idx); if (r < 0) return r; else if (idx == -1) return LIBUSB_ERROR_NOT_FOUND; else return libusb_get_config_descriptor(dev, (uint8_t) idx, config); } /** \ingroup libusb_desc * Free a configuration descriptor obtained from * libusb_get_active_config_descriptor() or libusb_get_config_descriptor(). * It is safe to call this function with a NULL config parameter, in which * case the function simply returns. * * \param config the configuration descriptor to free */ void API_EXPORTED libusb_free_config_descriptor( struct libusb_config_descriptor *config) { if (!config) return; clear_configuration(config); free(config); } /** \ingroup libusb_desc * Get an endpoints superspeed endpoint companion descriptor (if any) * * \param ctx the context to operate on, or NULL for the default context * \param endpoint endpoint descriptor from which to get the superspeed * endpoint companion descriptor * \param ep_comp output location for the superspeed endpoint companion * descriptor. Only valid if 0 was returned. Must be freed with * libusb_free_ss_endpoint_companion_descriptor() after use. * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the configuration does not exist * \returns another LIBUSB_ERROR code on error */ int API_EXPORTED libusb_get_ss_endpoint_companion_descriptor( struct libusb_context *ctx, const struct libusb_endpoint_descriptor *endpoint, struct libusb_ss_endpoint_companion_descriptor **ep_comp) { struct usb_descriptor_header header; int size = endpoint->extra_length; const unsigned char *buffer = endpoint->extra; *ep_comp = NULL; while (size >= DESC_HEADER_LENGTH) { usbi_parse_descriptor(buffer, "bb", &header, 0); if (header.bLength < 2 || header.bLength > size) { usbi_err(ctx, "invalid descriptor length %d", header.bLength); return LIBUSB_ERROR_IO; } if (header.bDescriptorType != LIBUSB_DT_SS_ENDPOINT_COMPANION) { buffer += header.bLength; size -= header.bLength; continue; } if (header.bLength < LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE) { usbi_err(ctx, "invalid ss-ep-comp-desc length %d", header.bLength); return LIBUSB_ERROR_IO; } *ep_comp = malloc(sizeof(**ep_comp)); if (*ep_comp == NULL) return LIBUSB_ERROR_NO_MEM; usbi_parse_descriptor(buffer, "bbbbw", *ep_comp, 0); return LIBUSB_SUCCESS; } return LIBUSB_ERROR_NOT_FOUND; } /** \ingroup libusb_desc * Free a superspeed endpoint companion descriptor obtained from * libusb_get_ss_endpoint_companion_descriptor(). * It is safe to call this function with a NULL ep_comp parameter, in which * case the function simply returns. * * \param ep_comp the superspeed endpoint companion descriptor to free */ void API_EXPORTED libusb_free_ss_endpoint_companion_descriptor( struct libusb_ss_endpoint_companion_descriptor *ep_comp) { free(ep_comp); } static int parse_bos(struct libusb_context *ctx, struct libusb_bos_descriptor **bos, unsigned char *buffer, int size, int host_endian) { struct libusb_bos_descriptor bos_header, *_bos; struct libusb_bos_dev_capability_descriptor dev_cap; int i; if (size < LIBUSB_DT_BOS_SIZE) { usbi_err(ctx, "short bos descriptor read %d/%d", size, LIBUSB_DT_BOS_SIZE); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(buffer, "bbwb", &bos_header, host_endian); if (bos_header.bDescriptorType != LIBUSB_DT_BOS) { usbi_err(ctx, "unexpected descriptor %x (expected %x)", bos_header.bDescriptorType, LIBUSB_DT_BOS); return LIBUSB_ERROR_IO; } if (bos_header.bLength < LIBUSB_DT_BOS_SIZE) { usbi_err(ctx, "invalid bos bLength (%d)", bos_header.bLength); return LIBUSB_ERROR_IO; } if (bos_header.bLength > size) { usbi_err(ctx, "short bos descriptor read %d/%d", size, bos_header.bLength); return LIBUSB_ERROR_IO; } _bos = calloc (1, sizeof(*_bos) + bos_header.bNumDeviceCaps * sizeof(void *)); if (!_bos) return LIBUSB_ERROR_NO_MEM; usbi_parse_descriptor(buffer, "bbwb", _bos, host_endian); buffer += bos_header.bLength; size -= bos_header.bLength; /* Get the device capability descriptors */ for (i = 0; i < bos_header.bNumDeviceCaps; i++) { if (size < LIBUSB_DT_DEVICE_CAPABILITY_SIZE) { usbi_warn(ctx, "short dev-cap descriptor read %d/%d", size, LIBUSB_DT_DEVICE_CAPABILITY_SIZE); break; } usbi_parse_descriptor(buffer, "bbb", &dev_cap, host_endian); if (dev_cap.bDescriptorType != LIBUSB_DT_DEVICE_CAPABILITY) { usbi_warn(ctx, "unexpected descriptor %x (expected %x)", dev_cap.bDescriptorType, LIBUSB_DT_DEVICE_CAPABILITY); break; } if (dev_cap.bLength < LIBUSB_DT_DEVICE_CAPABILITY_SIZE) { usbi_err(ctx, "invalid dev-cap bLength (%d)", dev_cap.bLength); libusb_free_bos_descriptor(_bos); return LIBUSB_ERROR_IO; } if (dev_cap.bLength > size) { usbi_warn(ctx, "short dev-cap descriptor read %d/%d", size, dev_cap.bLength); break; } _bos->dev_capability[i] = malloc(dev_cap.bLength); if (!_bos->dev_capability[i]) { libusb_free_bos_descriptor(_bos); return LIBUSB_ERROR_NO_MEM; } memcpy(_bos->dev_capability[i], buffer, dev_cap.bLength); buffer += dev_cap.bLength; size -= dev_cap.bLength; } _bos->bNumDeviceCaps = (uint8_t)i; *bos = _bos; return LIBUSB_SUCCESS; } /** \ingroup libusb_desc * Get a Binary Object Store (BOS) descriptor * This is a BLOCKING function, which will send requests to the device. * * \param dev_handle the handle of an open libusb device * \param bos output location for the BOS descriptor. Only valid if 0 was returned. * Must be freed with \ref libusb_free_bos_descriptor() after use. * \returns 0 on success * \returns LIBUSB_ERROR_NOT_FOUND if the device doesn't have a BOS descriptor * \returns another LIBUSB_ERROR code on error */ int API_EXPORTED libusb_get_bos_descriptor(libusb_device_handle *dev_handle, struct libusb_bos_descriptor **bos) { struct libusb_bos_descriptor _bos; uint8_t bos_header[LIBUSB_DT_BOS_SIZE] = {0}; unsigned char *bos_data = NULL; const int host_endian = 0; int r; /* Read the BOS. This generates 2 requests on the bus, * one for the header, and one for the full BOS */ r = libusb_get_descriptor(dev_handle, LIBUSB_DT_BOS, 0, bos_header, LIBUSB_DT_BOS_SIZE); if (r < 0) { if (r != LIBUSB_ERROR_PIPE) usbi_err(HANDLE_CTX(dev_handle), "failed to read BOS (%d)", r); return r; } if (r < LIBUSB_DT_BOS_SIZE) { usbi_err(HANDLE_CTX(dev_handle), "short BOS read %d/%d", r, LIBUSB_DT_BOS_SIZE); return LIBUSB_ERROR_IO; } usbi_parse_descriptor(bos_header, "bbwb", &_bos, host_endian); usbi_dbg("found BOS descriptor: size %d bytes, %d capabilities", _bos.wTotalLength, _bos.bNumDeviceCaps); bos_data = calloc(_bos.wTotalLength, 1); if (bos_data == NULL) return LIBUSB_ERROR_NO_MEM; r = libusb_get_descriptor(dev_handle, LIBUSB_DT_BOS, 0, bos_data, _bos.wTotalLength); if (r >= 0) r = parse_bos(HANDLE_CTX(dev_handle), bos, bos_data, r, host_endian); else usbi_err(HANDLE_CTX(dev_handle), "failed to read BOS (%d)", r); free(bos_data); return r; } /** \ingroup libusb_desc * Free a BOS descriptor obtained from libusb_get_bos_descriptor(). * It is safe to call this function with a NULL bos parameter, in which * case the function simply returns. * * \param bos the BOS descriptor to free */ void API_EXPORTED libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos) { int i; if (!bos) return; for (i = 0; i < bos->bNumDeviceCaps; i++) free(bos->dev_capability[i]); free(bos); } /** \ingroup libusb_desc * Get an USB 2.0 Extension descriptor * * \param ctx the context to operate on, or NULL for the default context * \param dev_cap Device Capability descriptor with a bDevCapabilityType of * \ref libusb_capability_type::LIBUSB_BT_USB_2_0_EXTENSION * LIBUSB_BT_USB_2_0_EXTENSION * \param usb_2_0_extension output location for the USB 2.0 Extension * descriptor. Only valid if 0 was returned. Must be freed with * libusb_free_usb_2_0_extension_descriptor() after use. * \returns 0 on success * \returns a LIBUSB_ERROR code on error */ int API_EXPORTED libusb_get_usb_2_0_extension_descriptor( struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_usb_2_0_extension_descriptor **usb_2_0_extension) { struct libusb_usb_2_0_extension_descriptor *_usb_2_0_extension; const int host_endian = 0; if (dev_cap->bDevCapabilityType != LIBUSB_BT_USB_2_0_EXTENSION) { usbi_err(ctx, "unexpected bDevCapabilityType %x (expected %x)", dev_cap->bDevCapabilityType, LIBUSB_BT_USB_2_0_EXTENSION); return LIBUSB_ERROR_INVALID_PARAM; } if (dev_cap->bLength < LIBUSB_BT_USB_2_0_EXTENSION_SIZE) { usbi_err(ctx, "short dev-cap descriptor read %d/%d", dev_cap->bLength, LIBUSB_BT_USB_2_0_EXTENSION_SIZE); return LIBUSB_ERROR_IO; } _usb_2_0_extension = malloc(sizeof(*_usb_2_0_extension)); if (!_usb_2_0_extension) return LIBUSB_ERROR_NO_MEM; usbi_parse_descriptor((unsigned char *)dev_cap, "bbbd", _usb_2_0_extension, host_endian); *usb_2_0_extension = _usb_2_0_extension; return LIBUSB_SUCCESS; } /** \ingroup libusb_desc * Free a USB 2.0 Extension descriptor obtained from * libusb_get_usb_2_0_extension_descriptor(). * It is safe to call this function with a NULL usb_2_0_extension parameter, * in which case the function simply returns. * * \param usb_2_0_extension the USB 2.0 Extension descriptor to free */ void API_EXPORTED libusb_free_usb_2_0_extension_descriptor( struct libusb_usb_2_0_extension_descriptor *usb_2_0_extension) { free(usb_2_0_extension); } /** \ingroup libusb_desc * Get a SuperSpeed USB Device Capability descriptor * * \param ctx the context to operate on, or NULL for the default context * \param dev_cap Device Capability descriptor with a bDevCapabilityType of * \ref libusb_capability_type::LIBUSB_BT_SS_USB_DEVICE_CAPABILITY * LIBUSB_BT_SS_USB_DEVICE_CAPABILITY * \param ss_usb_device_cap output location for the SuperSpeed USB Device * Capability descriptor. Only valid if 0 was returned. Must be freed with * libusb_free_ss_usb_device_capability_descriptor() after use. * \returns 0 on success * \returns a LIBUSB_ERROR code on error */ int API_EXPORTED libusb_get_ss_usb_device_capability_descriptor( struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_ss_usb_device_capability_descriptor **ss_usb_device_cap) { struct libusb_ss_usb_device_capability_descriptor *_ss_usb_device_cap; const int host_endian = 0; if (dev_cap->bDevCapabilityType != LIBUSB_BT_SS_USB_DEVICE_CAPABILITY) { usbi_err(ctx, "unexpected bDevCapabilityType %x (expected %x)", dev_cap->bDevCapabilityType, LIBUSB_BT_SS_USB_DEVICE_CAPABILITY); return LIBUSB_ERROR_INVALID_PARAM; } if (dev_cap->bLength < LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE) { usbi_err(ctx, "short dev-cap descriptor read %d/%d", dev_cap->bLength, LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE); return LIBUSB_ERROR_IO; } _ss_usb_device_cap = malloc(sizeof(*_ss_usb_device_cap)); if (!_ss_usb_device_cap) return LIBUSB_ERROR_NO_MEM; usbi_parse_descriptor((unsigned char *)dev_cap, "bbbbwbbw", _ss_usb_device_cap, host_endian); *ss_usb_device_cap = _ss_usb_device_cap; return LIBUSB_SUCCESS; } /** \ingroup libusb_desc * Free a SuperSpeed USB Device Capability descriptor obtained from * libusb_get_ss_usb_device_capability_descriptor(). * It is safe to call this function with a NULL ss_usb_device_cap * parameter, in which case the function simply returns. * * \param ss_usb_device_cap the USB 2.0 Extension descriptor to free */ void API_EXPORTED libusb_free_ss_usb_device_capability_descriptor( struct libusb_ss_usb_device_capability_descriptor *ss_usb_device_cap) { free(ss_usb_device_cap); } /** \ingroup libusb_desc * Get a Container ID descriptor * * \param ctx the context to operate on, or NULL for the default context * \param dev_cap Device Capability descriptor with a bDevCapabilityType of * \ref libusb_capability_type::LIBUSB_BT_CONTAINER_ID * LIBUSB_BT_CONTAINER_ID * \param container_id output location for the Container ID descriptor. * Only valid if 0 was returned. Must be freed with * libusb_free_container_id_descriptor() after use. * \returns 0 on success * \returns a LIBUSB_ERROR code on error */ int API_EXPORTED libusb_get_container_id_descriptor(struct libusb_context *ctx, struct libusb_bos_dev_capability_descriptor *dev_cap, struct libusb_container_id_descriptor **container_id) { struct libusb_container_id_descriptor *_container_id; const int host_endian = 0; if (dev_cap->bDevCapabilityType != LIBUSB_BT_CONTAINER_ID) { usbi_err(ctx, "unexpected bDevCapabilityType %x (expected %x)", dev_cap->bDevCapabilityType, LIBUSB_BT_CONTAINER_ID); return LIBUSB_ERROR_INVALID_PARAM; } if (dev_cap->bLength < LIBUSB_BT_CONTAINER_ID_SIZE) { usbi_err(ctx, "short dev-cap descriptor read %d/%d", dev_cap->bLength, LIBUSB_BT_CONTAINER_ID_SIZE); return LIBUSB_ERROR_IO; } _container_id = malloc(sizeof(*_container_id)); if (!_container_id) return LIBUSB_ERROR_NO_MEM; usbi_parse_descriptor((unsigned char *)dev_cap, "bbbbu", _container_id, host_endian); *container_id = _container_id; return LIBUSB_SUCCESS; } /** \ingroup libusb_desc * Free a Container ID descriptor obtained from * libusb_get_container_id_descriptor(). * It is safe to call this function with a NULL container_id parameter, * in which case the function simply returns. * * \param container_id the USB 2.0 Extension descriptor to free */ void API_EXPORTED libusb_free_container_id_descriptor( struct libusb_container_id_descriptor *container_id) { free(container_id); } /** \ingroup libusb_desc * Retrieve a string descriptor in C style ASCII. * * Wrapper around libusb_get_string_descriptor(). Uses the first language * supported by the device. * * \param dev_handle a device handle * \param desc_index the index of the descriptor to retrieve * \param data output buffer for ASCII string descriptor * \param length size of data buffer * \returns number of bytes returned in data, or LIBUSB_ERROR code on failure */ int API_EXPORTED libusb_get_string_descriptor_ascii(libusb_device_handle *dev_handle, uint8_t desc_index, unsigned char *data, int length) { unsigned char tbuf[255]; /* Some devices choke on size > 255 */ int r, si, di; uint16_t langid; /* Asking for the zero'th index is special - it returns a string * descriptor that contains all the language IDs supported by the * device. Typically there aren't many - often only one. Language * IDs are 16 bit numbers, and they start at the third byte in the * descriptor. There's also no point in trying to read descriptor 0 * with this function. See USB 2.0 specification section 9.6.7 for * more information. */ if (desc_index == 0) return LIBUSB_ERROR_INVALID_PARAM; r = libusb_get_string_descriptor(dev_handle, 0, 0, tbuf, sizeof(tbuf)); if (r < 0) return r; if (r < 4) return LIBUSB_ERROR_IO; langid = tbuf[2] | (tbuf[3] << 8); r = libusb_get_string_descriptor(dev_handle, desc_index, langid, tbuf, sizeof(tbuf)); if (r < 0) return r; if (tbuf[1] != LIBUSB_DT_STRING) return LIBUSB_ERROR_IO; if (tbuf[0] > r) return LIBUSB_ERROR_IO; di = 0; for (si = 2; si < tbuf[0]; si += 2) { if (di >= (length - 1)) break; if ((tbuf[si] & 0x80) || (tbuf[si + 1])) /* non-ASCII */ data[di++] = '?'; else data[di++] = tbuf[si]; } data[di] = 0; return di; } release/libusb/libusb/strerror.c0000664000000000000000000001647314261476162016010 0ustar rootroot/* * libusb strerror code * Copyright © 2013 Hans de Goede * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #if defined(HAVE_STRINGS_H) #include #endif #include "libusbi.h" #if defined(_MSC_VER) #define strncasecmp _strnicmp #endif static size_t usbi_locale = 0; /** \ingroup libusb_misc * How to add a new \ref libusb_strerror() translation: *
    *
  1. Download the latest \c strerror.c from:
    * https://raw.github.com/libusb/libusb/master/libusb/sterror.c
    2. *
  2. Open the file in an UTF-8 capable editor
    3. *
  3. Add the 2 letter ISO 639-1 * code for your locale at the end of \c usbi_locale_supported[]
    * Eg. for Chinese, you would add "zh" so that: * \code... usbi_locale_supported[] = { "en", "nl", "fr" };\endcode * becomes: * \code... usbi_locale_supported[] = { "en", "nl", "fr", "zh" };\endcode
    4. *
  4. Copy the { / * English (en) * / ... } section and add it at the end of \c usbi_localized_errors
    * Eg. for Chinese, the last section of \c usbi_localized_errors could look like: * \code * }, { / * Chinese (zh) * / * "Success", * ... * "Other error", * } * };\endcode
    5. *
  5. Translate each of the English messages from the section you copied into your language
    6. *
  6. Save the file (in UTF-8 format) and send it to \c libusb-devel\@lists.sourceforge.net
    7. *
*/ static const char* usbi_locale_supported[] = { "en", "nl", "fr", "ru" }; static const char* usbi_localized_errors[ARRAYSIZE(usbi_locale_supported)][LIBUSB_ERROR_COUNT] = { { /* English (en) */ "Success", "Input/Output Error", "Invalid parameter", "Access denied (insufficient permissions)", "No such device (it may have been disconnected)", "Entity not found", "Resource busy", "Operation timed out", "Overflow", "Pipe error", "System call interrupted (perhaps due to signal)", "Insufficient memory", "Operation not supported or unimplemented on this platform", "Other error", }, { /* Dutch (nl) */ "Gelukt", "Invoer-/uitvoerfout", "Ongeldig argument", "Toegang geweigerd (onvoldoende toegangsrechten)", "Apparaat bestaat niet (verbinding met apparaat verbroken?)", "Niet gevonden", "Apparaat of hulpbron is bezig", "Bewerking verlopen", "Waarde is te groot", "Gebroken pijp", "Onderbroken systeemaanroep", "Onvoldoende geheugen beschikbaar", "Bewerking wordt niet ondersteund", "Andere fout", }, { /* French (fr) */ "Succès", "Erreur d'entrée/sortie", "Paramètre invalide", "Accès refusé (permissions insuffisantes)", "Périphérique introuvable (peut-être déconnecté)", "Elément introuvable", "Resource déjà occupée", "Operation expirée", "Débordement", "Erreur de pipe", "Appel système abandonné (peut-être à cause d’un signal)", "Mémoire insuffisante", "Opération non supportée or non implémentée sur cette plateforme", "Autre erreur", }, { /* Russian (ru) */ "Успех", "Ошибка ввода/вывода", "Неверный параметр", "Доступ запрещён (не хватает прав)", "Устройство отсутствует (возможно, оно было отсоединено)", "Элемент не найден", "Ресурс занят", "Истекло время ожидания операции", "Переполнение", "Ошибка канала", "Системный вызов прерван (возможно, сигналом)", "Память исчерпана", "Операция не поддерживается данной платформой", "Неизвестная ошибка" } }; /** \ingroup libusb_misc * Set the language, and only the language, not the encoding! used for * translatable libusb messages. * * This takes a locale string in the default setlocale format: lang[-region] * or lang[_country_region][.codeset]. Only the lang part of the string is * used, and only 2 letter ISO 639-1 codes are accepted for it, such as "de". * The optional region, country_region or codeset parts are ignored. This * means that functions which return translatable strings will NOT honor the * specified encoding. * All strings returned are encoded as UTF-8 strings. * * If libusb_setlocale() is not called, all messages will be in English. * * The following functions return translatable strings: libusb_strerror(). * Note that the libusb log messages controlled through libusb_set_debug() * are not translated, they are always in English. * * For POSIX UTF-8 environments if you want libusb to follow the standard * locale settings, call libusb_setlocale(setlocale(LC_MESSAGES, NULL)), * after your app has done its locale setup. * * \param locale locale-string in the form of lang[_country_region][.codeset] * or lang[-region], where lang is a 2 letter ISO 639-1 code * \returns LIBUSB_SUCCESS on success * \returns LIBUSB_ERROR_INVALID_PARAM if the locale doesn't meet the requirements * \returns LIBUSB_ERROR_NOT_FOUND if the requested language is not supported * \returns a LIBUSB_ERROR code on other errors */ int API_EXPORTED libusb_setlocale(const char *locale) { size_t i; if ( (locale == NULL) || (strlen(locale) < 2) || ((strlen(locale) > 2) && (locale[2] != '-') && (locale[2] != '_') && (locale[2] != '.')) ) return LIBUSB_ERROR_INVALID_PARAM; for (i=0; i= ARRAYSIZE(usbi_locale_supported)) { return LIBUSB_ERROR_NOT_FOUND; } usbi_locale = i; return LIBUSB_SUCCESS; } /** \ingroup libusb_misc * Returns a constant string with a short description of the given error code, * this description is intended for displaying to the end user and will be in * the language set by libusb_setlocale(). * * The returned string is encoded in UTF-8. * * The messages always start with a capital letter and end without any dot. * The caller must not free() the returned string. * * \param errcode the error code whose description is desired * \returns a short description of the error code in UTF-8 encoding */ DEFAULT_VISIBILITY const char* LIBUSB_CALL libusb_strerror(enum libusb_error errcode) { int errcode_index = -errcode; if ((errcode_index < 0) || (errcode_index >= LIBUSB_ERROR_COUNT)) { /* "Other Error", which should always be our last message, is returned */ errcode_index = LIBUSB_ERROR_COUNT - 1; } return usbi_localized_errors[usbi_locale][errcode_index]; } release/libusb/libusb/version.h0000664000000000000000000000065714261476162015615 0ustar rootroot/* This file is parsed by m4 and windres and RC.EXE so please keep it simple. */ #include "version_nano.h" #ifndef LIBUSB_MAJOR #define LIBUSB_MAJOR 1 #endif #ifndef LIBUSB_MINOR #define LIBUSB_MINOR 0 #endif #ifndef LIBUSB_MICRO #define LIBUSB_MICRO 22 #endif #ifndef LIBUSB_NANO #define LIBUSB_NANO 0 #endif /* LIBUSB_RC is the release candidate suffix. Should normally be empty. */ #ifndef LIBUSB_RC #define LIBUSB_RC "" #endif release/libusb/libusb/sync.c0000664000000000000000000002747614261476161015106 0ustar rootroot/* * Synchronous I/O functions for libusb * Copyright © 2007-2008 Daniel Drake * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "libusbi.h" /** * @defgroup libusb_syncio Synchronous device I/O * * This page documents libusb's synchronous (blocking) API for USB device I/O. * This interface is easy to use but has some limitations. More advanced users * may wish to consider using the \ref libusb_asyncio "asynchronous I/O API" instead. */ static void LIBUSB_CALL sync_transfer_cb(struct libusb_transfer *transfer) { int *completed = transfer->user_data; *completed = 1; usbi_dbg("actual_length=%d", transfer->actual_length); /* caller interprets result and frees transfer */ } static void sync_transfer_wait_for_completion(struct libusb_transfer *transfer) { int r, *completed = transfer->user_data; struct libusb_context *ctx = HANDLE_CTX(transfer->dev_handle); while (!*completed) { r = libusb_handle_events_completed(ctx, completed); if (r < 0) { if (r == LIBUSB_ERROR_INTERRUPTED) continue; usbi_err(ctx, "libusb_handle_events failed: %s, cancelling transfer and retrying", libusb_error_name(r)); libusb_cancel_transfer(transfer); continue; } } } /** \ingroup libusb_syncio * Perform a USB control transfer. * * The direction of the transfer is inferred from the bmRequestType field of * the setup packet. * * The wValue, wIndex and wLength fields values should be given in host-endian * byte order. * * \param dev_handle a handle for the device to communicate with * \param bmRequestType the request type field for the setup packet * \param bRequest the request field for the setup packet * \param wValue the value field for the setup packet * \param wIndex the index field for the setup packet * \param data a suitably-sized data buffer for either input or output * (depending on direction bits within bmRequestType) * \param wLength the length field for the setup packet. The data buffer should * be at least this size. * \param timeout timeout (in millseconds) that this function should wait * before giving up due to no response being received. For an unlimited * timeout, use value 0. * \returns on success, the number of bytes actually transferred * \returns LIBUSB_ERROR_TIMEOUT if the transfer timed out * \returns LIBUSB_ERROR_PIPE if the control request was not supported by the * device * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns LIBUSB_ERROR_BUSY if called from event handling context * \returns LIBUSB_ERROR_INVALID_PARAM if the transfer size is larger than * the operating system and/or hardware can support * \returns another LIBUSB_ERROR code on other failures */ int API_EXPORTED libusb_control_transfer(libusb_device_handle *dev_handle, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, unsigned char *data, uint16_t wLength, unsigned int timeout) { struct libusb_transfer *transfer; unsigned char *buffer; int completed = 0; int r; if (usbi_handling_events(HANDLE_CTX(dev_handle))) return LIBUSB_ERROR_BUSY; transfer = libusb_alloc_transfer(0); if (!transfer) return LIBUSB_ERROR_NO_MEM; buffer = (unsigned char*) malloc(LIBUSB_CONTROL_SETUP_SIZE + wLength); if (!buffer) { libusb_free_transfer(transfer); return LIBUSB_ERROR_NO_MEM; } libusb_fill_control_setup(buffer, bmRequestType, bRequest, wValue, wIndex, wLength); if ((bmRequestType & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_OUT) memcpy(buffer + LIBUSB_CONTROL_SETUP_SIZE, data, wLength); libusb_fill_control_transfer(transfer, dev_handle, buffer, sync_transfer_cb, &completed, timeout); transfer->flags = LIBUSB_TRANSFER_FREE_BUFFER; r = libusb_submit_transfer(transfer); if (r < 0) { libusb_free_transfer(transfer); return r; } sync_transfer_wait_for_completion(transfer); if ((bmRequestType & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_IN) memcpy(data, libusb_control_transfer_get_data(transfer), transfer->actual_length); switch (transfer->status) { case LIBUSB_TRANSFER_COMPLETED: r = transfer->actual_length; break; case LIBUSB_TRANSFER_TIMED_OUT: r = LIBUSB_ERROR_TIMEOUT; break; case LIBUSB_TRANSFER_STALL: r = LIBUSB_ERROR_PIPE; break; case LIBUSB_TRANSFER_NO_DEVICE: r = LIBUSB_ERROR_NO_DEVICE; break; case LIBUSB_TRANSFER_OVERFLOW: r = LIBUSB_ERROR_OVERFLOW; break; case LIBUSB_TRANSFER_ERROR: case LIBUSB_TRANSFER_CANCELLED: r = LIBUSB_ERROR_IO; break; default: usbi_warn(HANDLE_CTX(dev_handle), "unrecognised status code %d", transfer->status); r = LIBUSB_ERROR_OTHER; } libusb_free_transfer(transfer); return r; } static int do_sync_bulk_transfer(struct libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *buffer, int length, int *transferred, unsigned int timeout, unsigned char type) { struct libusb_transfer *transfer; int completed = 0; int r; if (usbi_handling_events(HANDLE_CTX(dev_handle))) return LIBUSB_ERROR_BUSY; transfer = libusb_alloc_transfer(0); if (!transfer) return LIBUSB_ERROR_NO_MEM; libusb_fill_bulk_transfer(transfer, dev_handle, endpoint, buffer, length, sync_transfer_cb, &completed, timeout); transfer->type = type; r = libusb_submit_transfer(transfer); if (r < 0) { libusb_free_transfer(transfer); return r; } sync_transfer_wait_for_completion(transfer); if (transferred) *transferred = transfer->actual_length; switch (transfer->status) { case LIBUSB_TRANSFER_COMPLETED: r = 0; break; case LIBUSB_TRANSFER_TIMED_OUT: r = LIBUSB_ERROR_TIMEOUT; break; case LIBUSB_TRANSFER_STALL: r = LIBUSB_ERROR_PIPE; break; case LIBUSB_TRANSFER_OVERFLOW: r = LIBUSB_ERROR_OVERFLOW; break; case LIBUSB_TRANSFER_NO_DEVICE: r = LIBUSB_ERROR_NO_DEVICE; break; case LIBUSB_TRANSFER_ERROR: case LIBUSB_TRANSFER_CANCELLED: r = LIBUSB_ERROR_IO; break; default: usbi_warn(HANDLE_CTX(dev_handle), "unrecognised status code %d", transfer->status); r = LIBUSB_ERROR_OTHER; } libusb_free_transfer(transfer); return r; } /** \ingroup libusb_syncio * Perform a USB bulk transfer. The direction of the transfer is inferred from * the direction bits of the endpoint address. * * For bulk reads, the length field indicates the maximum length of * data you are expecting to receive. If less data arrives than expected, * this function will return that data, so be sure to check the * transferred output parameter. * * You should also check the transferred parameter for bulk writes. * Not all of the data may have been written. * * Also check transferred when dealing with a timeout error code. * libusb may have to split your transfer into a number of chunks to satisfy * underlying O/S requirements, meaning that the timeout may expire after * the first few chunks have completed. libusb is careful not to lose any data * that may have been transferred; do not assume that timeout conditions * indicate a complete lack of I/O. * * \param dev_handle a handle for the device to communicate with * \param endpoint the address of a valid endpoint to communicate with * \param data a suitably-sized data buffer for either input or output * (depending on endpoint) * \param length for bulk writes, the number of bytes from data to be sent. for * bulk reads, the maximum number of bytes to receive into the data buffer. * \param transferred output location for the number of bytes actually * transferred. Since version 1.0.21 (\ref LIBUSB_API_VERSION >= 0x01000105), * it is legal to pass a NULL pointer if you do not wish to receive this * information. * \param timeout timeout (in millseconds) that this function should wait * before giving up due to no response being received. For an unlimited * timeout, use value 0. * * \returns 0 on success (and populates transferred) * \returns LIBUSB_ERROR_TIMEOUT if the transfer timed out (and populates * transferred) * \returns LIBUSB_ERROR_PIPE if the endpoint halted * \returns LIBUSB_ERROR_OVERFLOW if the device offered more data, see * \ref libusb_packetoverflow * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns LIBUSB_ERROR_BUSY if called from event handling context * \returns another LIBUSB_ERROR code on other failures */ int API_EXPORTED libusb_bulk_transfer(struct libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *data, int length, int *transferred, unsigned int timeout) { return do_sync_bulk_transfer(dev_handle, endpoint, data, length, transferred, timeout, LIBUSB_TRANSFER_TYPE_BULK); } /** \ingroup libusb_syncio * Perform a USB interrupt transfer. The direction of the transfer is inferred * from the direction bits of the endpoint address. * * For interrupt reads, the length field indicates the maximum length * of data you are expecting to receive. If less data arrives than expected, * this function will return that data, so be sure to check the * transferred output parameter. * * You should also check the transferred parameter for interrupt * writes. Not all of the data may have been written. * * Also check transferred when dealing with a timeout error code. * libusb may have to split your transfer into a number of chunks to satisfy * underlying O/S requirements, meaning that the timeout may expire after * the first few chunks have completed. libusb is careful not to lose any data * that may have been transferred; do not assume that timeout conditions * indicate a complete lack of I/O. * * The default endpoint bInterval value is used as the polling interval. * * \param dev_handle a handle for the device to communicate with * \param endpoint the address of a valid endpoint to communicate with * \param data a suitably-sized data buffer for either input or output * (depending on endpoint) * \param length for bulk writes, the number of bytes from data to be sent. for * bulk reads, the maximum number of bytes to receive into the data buffer. * \param transferred output location for the number of bytes actually * transferred. Since version 1.0.21 (\ref LIBUSB_API_VERSION >= 0x01000105), * it is legal to pass a NULL pointer if you do not wish to receive this * information. * \param timeout timeout (in millseconds) that this function should wait * before giving up due to no response being received. For an unlimited * timeout, use value 0. * * \returns 0 on success (and populates transferred) * \returns LIBUSB_ERROR_TIMEOUT if the transfer timed out * \returns LIBUSB_ERROR_PIPE if the endpoint halted * \returns LIBUSB_ERROR_OVERFLOW if the device offered more data, see * \ref libusb_packetoverflow * \returns LIBUSB_ERROR_NO_DEVICE if the device has been disconnected * \returns LIBUSB_ERROR_BUSY if called from event handling context * \returns another LIBUSB_ERROR code on other error */ int API_EXPORTED libusb_interrupt_transfer( struct libusb_device_handle *dev_handle, unsigned char endpoint, unsigned char *data, int length, int *transferred, unsigned int timeout) { return do_sync_bulk_transfer(dev_handle, endpoint, data, length, transferred, timeout, LIBUSB_TRANSFER_TYPE_INTERRUPT); } release/WinTypes.h0000775000000000000000000001231114261506412013133 0ustar rootroot#ifndef __WINDOWS_TYPES__ #define __WINDOWS_TYPES__ #define WINAPI typedef unsigned int DWORD; typedef unsigned int ULONG; typedef unsigned short USHORT; typedef unsigned short SHORT; typedef unsigned char UCHAR; typedef unsigned short WORD; typedef unsigned short WCHAR; typedef unsigned char BYTE; typedef BYTE *LPBYTE; typedef unsigned int BOOL; typedef unsigned char BOOLEAN; typedef unsigned char CHAR; typedef BOOL *LPBOOL; typedef UCHAR *PUCHAR; typedef const char *LPCSTR; typedef char *PCHAR; typedef void *PVOID; typedef void *HANDLE; typedef unsigned int LONG; typedef int INT; typedef unsigned int UINT; typedef char *LPSTR; typedef char *LPTSTR; typedef const char *LPCTSTR; typedef DWORD *LPDWORD; typedef WORD *LPWORD; typedef ULONG *PULONG; typedef LONG *LPLONG; typedef PVOID LPVOID; typedef void VOID; typedef USHORT *PUSHORT; typedef unsigned long long int ULONGLONG; typedef struct _OVERLAPPED { DWORD Internal; DWORD InternalHigh; union { struct{ DWORD Offset; DWORD OffsetHigh; }; PVOID Pointer; }; HANDLE hEvent; } OVERLAPPED, *LPOVERLAPPED; typedef struct _SECURITY_ATTRIBUTES { DWORD nLength; LPVOID lpSecurityDescriptor; BOOL bInheritHandle; } SECURITY_ATTRIBUTES , *LPSECURITY_ATTRIBUTES; #include // Substitute for HANDLE returned by Windows CreateEvent API. // FT_SetEventNotification expects parameter 3 to be the address // of one of these structures. typedef struct _EVENT_HANDLE { pthread_cond_t eCondVar; pthread_mutex_t eMutex; int iVar; } EVENT_HANDLE; typedef struct timeval SYSTEMTIME; typedef struct timeval FILETIME; // WaitForSingleObject return values. #define WAIT_ABANDONED 0x00000080L #define WAIT_OBJECT_0 0x00000000L #define WAIT_TIMEOUT 0x00000102L #define WAIT_FAILED 0xFFFFFFFF // Special value for WaitForSingleObject dwMilliseconds parameter #define INFINITE 0xFFFFFFFF // Infinite timeout #ifndef TRUE #define TRUE 1 #endif #ifndef FALSE #define FALSE 0 #endif #ifndef CONST #define CONST const #endif // // Modem Status Flags // #define MS_CTS_ON ((DWORD)0x0010) #define MS_DSR_ON ((DWORD)0x0020) #define MS_RING_ON ((DWORD)0x0040) #define MS_RLSD_ON ((DWORD)0x0080) // // Error Flags // #define CE_RXOVER 0x0001 // Receive Queue overflow #define CE_OVERRUN 0x0002 // Receive Overrun Error #define CE_RXPARITY 0x0004 // Receive Parity Error #define CE_FRAME 0x0008 // Receive Framing error #define CE_BREAK 0x0010 // Break Detected #define CE_TXFULL 0x0100 // TX Queue is full #define CE_PTO 0x0200 // LPTx Timeout #define CE_IOE 0x0400 // LPTx I/O Error #define CE_DNS 0x0800 // LPTx Device not selected #define CE_OOP 0x1000 // LPTx Out-Of-Paper #define CE_MODE 0x8000 // Requested mode unsupported // // Events // #define EV_RXCHAR 0x0001 // Any Character received #define EV_RXFLAG 0x0002 // Received certain character #define EV_TXEMPTY 0x0004 // Transmit Queue Empty #define EV_CTS 0x0008 // CTS changed state #define EV_DSR 0x0010 // DSR changed state #define EV_RLSD 0x0020 // RLSD changed state #define EV_BREAK 0x0040 // BREAK received #define EV_ERR 0x0080 // Line status error occurred #define EV_RING 0x0100 // Ring signal detected #define EV_PERR 0x0200 // Printer error occured #define EV_RX80FULL 0x0400 // Receive buffer is 80 percent full #define EV_EVENT1 0x0800 // Provider specific event 1 #define EV_EVENT2 0x1000 // Provider specific event 2 // // Escape Functions // #define SETXOFF 1 // Simulate XOFF received #define SETXON 2 // Simulate XON received #define SETRTS 3 // Set RTS high #define CLRRTS 4 // Set RTS low #define SETDTR 5 // Set DTR high #define CLRDTR 6 // Set DTR low #define RESETDEV 7 // Reset device if possible #define SETBREAK 8 // Set the device break line. #define CLRBREAK 9 // Clear the device break line. // // PURGE function flags. // #define PURGE_TXABORT 0x0001 // Kill the pending/current writes to the comm port. #define PURGE_RXABORT 0x0002 // Kill the pending/current reads to the comm port. #define PURGE_TXCLEAR 0x0004 // Kill the transmit queue if there. #define PURGE_RXCLEAR 0x0008 // Kill the typeahead buffer if there. #ifndef INVALID_HANDLE_VALUE #define INVALID_HANDLE_VALUE 0xFFFFFFFF #endif #endif /* __WINDOWS_TYPES__ */ release/release-notes.txt0000664000000000000000000001635214261506412014515 0ustar rootrootlibftd2xx Release Notes 1.4.27 Add x86_32 support 1.4.26 Add arm64e support for mac 1.4.25 ARMv6l hard-float Support included, using ArchLinux ARM Cross compiler. 1.4.24 Support FT232HP, FT233HP, FT2232HP, FT2233HP, FT4232HP, FT4233HP, FT2232HA and FT4232HA devices. Correct length of product description for multi-interface devices. Add builds for Mac OS X using Apple M1 Silicon. 1.4.22 Improve response time to fast back-to-back FT_Read operations when data is available and buffered. Improve on fix introduced in 1.4.20. 1.4.20 Fix issue with possible timeout occurring when reading fast bursts of data. 1.4.16 Fix issue with occasional data loss on very first packet from device when repeatedly opening and closing driver. Update libusb to 1.0.22. 1.4.10 Implement functionality for FT_StopInTask and FT_RestartInTask. 1.4.8 Fix issue where ports opened within the same process do not show reliably in the FT_CreateDeviceInfoList. 1.4.6 Add ARM V8 build. 1.4.4 Reduce time taken to peform an FT_CreateDeviceInfoList. Small performance gains on FT_read. 1.4.2 Rename constructor and destructor to avoid conflict with MySQL. Minor updates to ftd2xx.h to match Windows version. 1.4.0 Update libusb from 1.0.18 to 1.0.20. Remove lib_table method for specifying custom VID+PIDs. 1.3.7 Allow FT_SetVIDPID to be called multiple times (no need to save and restore). The LibTable method still works but will be removed soon. 1.3.6 Release to web as platform-specific tgz packages. 1.3.5 Add support for ARMv7 uClibC targets. 1.3.3 Fix potential EEPROM corruption when writing to User Area on type 56 and 66 EEPROMs. Harmonise ftd2xx.h with up-to-date Windows version. Fix out-of-step versions of ftd2xx.h and WinTypes.h in examples directory. 1.3.1 Add builds for various ARM flavours, including v5, v6 and v7. 1.3.0 Replace libusbx 1.0.12 with libusb 1.0.18 (re-unified with libusbx). 1.2.8 Remove dependence on GLIBC 2.7 again, accidentally re-introduced in 1.2.0 with the switch to libusbx. Remove dependence of 64-bit library on GLIBC 2.14. 1.2.2 Fix bug where small numbers of bytes might be lost at low transfer speeds. 1.2.0 Replace libusb (1.0.8) with libusbx (1.0.12). Fix leaks introduced in 1.1.12: make FT_Close wait for outstanding requests. Fix bug where FT_GetStatus would silently ignore bytes received after waking from sleep: treat time-out like removal. Fix Mac crash discovered investigating above bug by reducing memory churn. Fix FT_SetDeadmanTimeout implementation: now matches Windows driver, and uses the device's default value, rather than the system-wide hard-coded default. Fix a few early-exit crashes. 1.1.12 Add basic support (not EEPROM) for X-series chips. Reduce memory churn during Bulk-In processing. Avoid potential crashes in FT_Close by not cancelling outstanding transfers: note - this causes FT_Close to leak a few bytes in some scenarios. Improve thread safety to fix potential shutdown crashes. 1.1.10 Add timeout for FT_Read; zero means infinite. Stop reading Bulk-In data when buffer is full, to avoid data loss. (Now matches Windows driver behaviour.) Fix a potential crash in FT_Read. Disable libusb's internal logging as it may be implicated in crashes. Fix potential crash when using Parallel FIFO (fast) reads. 1.1.0 Improve throughput by using multiple intermediate buffers and asynchronous libusb requests. Use separate threads for requesting and processing Bulk-In data, like the Windows driver. Support use in Android JNI projects. Add FT_CyclePort function. As with the Windows driver, this causes a re-enumeration of the device. Fix bug where FT_SetFlowControl had no effect without explicitly setting RTS or DTR. Improve unplug detection; better Bulk-In error handling after machine sleep. Avoid potential crash in static build when freeing a config descriptor allocated with insufficient permissions (0660). Correct Rx and Tx LED definitions for FT232H device EEPROM CBUS options. Pass Valgrind test: avoid leaking config descriptor, and free the device list when FT_Open exits early. Improve read timeouts. Fix FT_GetBitMode and FT_GetLatencyTimer bugs. 1.0.4 Add support for FT232H, including access to EEPROM (and its User Area). Fix multi-threaded write bug. Fix potential hang when accessing the device list. Disable libusb's use of timerfd, since this requires GLIBC 2.7. Fix bug opening devices using bad strings. 1.0.3 Fix potential crash in FT_ListDevices. 1.0.2 Remove dependence on GLIBC 2.8. Resolve issue where attempting to open a higher index interface on a device than is available could cause a segmentation violation. 1.0.1 Remove libusb kernel_driver calls as this could allow competing multiple D2XX processes to access the same device. Remove dependence on GLIBC 2.4. 1.0.0 Major upgrade. Fix numerous bugs. Add support for location IDs. Upgrade libusb to version 1.0.8 - requires udev (present on all 2.6 kernels). 0.4.14 Add enhancement to enable use in SuSe 10.2 default kernel. Correct FT_GetDeviceInfoList behaviour. 0.4.13 Fix software flow control (strip out flow control characters). Add FT_SetDeadmanTimeout API call. 0.4.12 Add configuration file option added to perform a usb reset on device open. (See Config.txt for further details.) 0.4.11 Enhance FT_SetUSBParameters - check for invalid parameters. Add driver version functions. Alter behaviour of a usb reset - only performed on unopened device (2.6 kernels only). Improved multi-threaded access. 0.4.10 Add W32 functions and samples (for the extra event handling). Add support for FT232R EEPROM. Fix minor FT_OpenEx bugs. Robust checking of passed in arguments. Fail on invalid handle or NULL pointers instead of causing Segmentation Faults. 0.4.9 Fix FT_OpenEx bug. Please report any future bugs, as different distributions may behave in a different manner. Fix 100% CPU count when using FT_SetBitMode and not using FT_Read to clear internal buffers. 0.4.8 Fix FT_Open bug - related to the detach of ftdi_sio kernel driver. 0.4.7 Fix Read-timeout bug. 0.4.6 Fix bug which prevented programming of FT2232 user area. 0.4.5 Allow detaching of ftdi_sio kernel driver on device access. 0.4.4 Add FT_CreateDeviceInfoList, FT_GetDeviceInfoList, FT_GetDeviceInfoDetail, FT_EE_ReadEx and FT_EE_ProgramEx. 0.4.3 Fix bulk-write bug on 2.6 kernels - requires "/proc/sys/kernel/osrelease" file to be present. 0.4.2 Fix bug in lib_table functionality. Now works with both static and dynamic library versions. 0.4.1 Fix modem event notification bug. 0.4.0 Compile user-space driver with GCC version 3.3.1. Convert all library code to C, so no C++ extensions required - should help with some C++ linkage problems. PLEASE NOTE: due to the conversion to C there is a small chance that you will experience problems; a full recompile of your application may solve this. If not, please contact FTDI Support. Users of the PenScope and Dualscope may experience problems related to this. Please contact FTDI Support for a suitable update. Fix FT_GetBitMode bug. Fix FT_Read timeout bug. Fix FT_GetStatus bug. Static library available (see static folder on how to compile). Static linkage to libusb to avoid installation issues. 0.3.0 Add timeouts. Add EEPROM reading/writitng. Add event handling (see example on how to use). Add more examples to help with development. Add FT_SetVIDPID - see example. release/ftd2xx.h0000775000000000000000000043217014261506412012601 0ustar rootroot/*++ Copyright (c) 2001-2021 Future Technology Devices International Limited THIS SOFTWARE IS PROVIDED BY FUTURE TECHNOLOGY DEVICES INTERNATIONAL LIMITED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL FUTURE TECHNOLOGY DEVICES INTERNATIONAL LIMITED BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE, DATA, OR PROFITS OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. FTDI DRIVERS MAY BE USED ONLY IN CONJUNCTION WITH PRODUCTS BASED ON FTDI PARTS. FTDI DRIVERS MAY BE DISTRIBUTED IN ANY FORM AS LONG AS LICENSE INFORMATION IS NOT MODIFIED. IF A CUSTOM VENDOR ID AND/OR PRODUCT ID OR DESCRIPTION STRING ARE USED, IT IS THE RESPONSIBILITY OF THE PRODUCT MANUFACTURER TO MAINTAIN ANY CHANGES AND SUBSEQUENT WHQL RE-CERTIFICATION AS A RESULT OF MAKING THESE CHANGES. Module Name: ftd2xx.h Abstract: Native USB device driver for FTDI FT232x, FT245x, FT2232x, FT4232x, FT2233H and FT4233H devices FTD2XX library definitions Environment: kernel & user mode --*/ /** @file ftd2xx.h */ #ifndef FTD2XX_H #define FTD2XX_H #ifdef _WIN32 // Compiling on Windows #include // The following ifdef block is the standard way of creating macros // which make exporting from a DLL simpler. All files within this DLL // are compiled with the FTD2XX_EXPORTS symbol defined on the command line. // This symbol should not be defined on any project that uses this DLL. // This way any other project whose source files include this file see // FTD2XX_API functions as being imported from a DLL, whereas this DLL // sees symbols defined with this macro as being exported. #ifdef FTD2XX_EXPORTS #define FTD2XX_API __declspec(dllexport) #elif defined(FTD2XX_STATIC) // Avoid decorations when linking statically to D2XX. #define FTD2XX_API // Static D2XX depends on these Windows libs: #pragma comment(lib, "setupapi.lib") #pragma comment(lib, "advapi32.lib") #pragma comment(lib, "user32.lib") #else #define FTD2XX_API __declspec(dllimport) #endif #else // _WIN32 // Compiling on non-Windows platform. #include "WinTypes.h" // No decorations needed. #define FTD2XX_API #endif // _WIN32 /** @name FT_HANDLE * An opaque value used as a handle to an opened FT device. */ typedef PVOID FT_HANDLE; /** @{ * @name FT_STATUS * @details Return status values for API calls. */ typedef ULONG FT_STATUS; enum { FT_OK, FT_INVALID_HANDLE, FT_DEVICE_NOT_FOUND, FT_DEVICE_NOT_OPENED, FT_IO_ERROR, FT_INSUFFICIENT_RESOURCES, FT_INVALID_PARAMETER, FT_INVALID_BAUD_RATE, FT_DEVICE_NOT_OPENED_FOR_ERASE, FT_DEVICE_NOT_OPENED_FOR_WRITE, FT_FAILED_TO_WRITE_DEVICE, FT_EEPROM_READ_FAILED, FT_EEPROM_WRITE_FAILED, FT_EEPROM_ERASE_FAILED, FT_EEPROM_NOT_PRESENT, FT_EEPROM_NOT_PROGRAMMED, FT_INVALID_ARGS, FT_NOT_SUPPORTED, FT_OTHER_ERROR, FT_DEVICE_LIST_NOT_READY, }; /** @} */ /** @name FT_SUCCESS Macro * Macro to determine success of an API call. * @returns Non-zero for successful call. */ #define FT_SUCCESS(status) ((status) == FT_OK) /** @{ * @name FT_OpenEx Flags * @see FT_OpenEx */ #define FT_OPEN_BY_SERIAL_NUMBER 1 #define FT_OPEN_BY_DESCRIPTION 2 #define FT_OPEN_BY_LOCATION 4 #define FT_OPEN_MASK (FT_OPEN_BY_SERIAL_NUMBER | \ FT_OPEN_BY_DESCRIPTION | \ FT_OPEN_BY_LOCATION) /** @} */ /** @{ * @name FT_ListDevices Flags * @remarks Used in conjunction with FT_OpenEx Flags * @see FT_ListDevices * @see FT_OpenEx */ #define FT_LIST_NUMBER_ONLY 0x80000000 #define FT_LIST_BY_INDEX 0x40000000 #define FT_LIST_ALL 0x20000000 #define FT_LIST_MASK (FT_LIST_NUMBER_ONLY|FT_LIST_BY_INDEX|FT_LIST_ALL) /** @} */ /** @{ * @name Baud Rates * Standard baud rates supported by many implementations and applications. * @see FT_SetBaudRate */ #define FT_BAUD_300 300 #define FT_BAUD_600 600 #define FT_BAUD_1200 1200 #define FT_BAUD_2400 2400 #define FT_BAUD_4800 4800 #define FT_BAUD_9600 9600 #define FT_BAUD_14400 14400 #define FT_BAUD_19200 19200 #define FT_BAUD_38400 38400 #define FT_BAUD_57600 57600 #define FT_BAUD_115200 115200 #define FT_BAUD_230400 230400 #define FT_BAUD_460800 460800 #define FT_BAUD_921600 921600 /** @} */ /** @{ * @name Word Lengths * @see FT_SetDataCharacteristics */ #define FT_BITS_8 (UCHAR) 8 #define FT_BITS_7 (UCHAR) 7 /** @} */ /** @{ * @name Stop Bits * @see FT_SetDataCharacteristics */ #define FT_STOP_BITS_1 (UCHAR) 0 #define FT_STOP_BITS_2 (UCHAR) 2 /** @} */ /* * @name Parity * @see FT_SetDataCharacteristics * @{ */ #define FT_PARITY_NONE (UCHAR) 0 #define FT_PARITY_ODD (UCHAR) 1 #define FT_PARITY_EVEN (UCHAR) 2 #define FT_PARITY_MARK (UCHAR) 3 #define FT_PARITY_SPACE (UCHAR) 4 /** @} */ /** @{ * @name Flow Control * @see FT_SetFlowControl */ #define FT_FLOW_NONE 0x0000 #define FT_FLOW_RTS_CTS 0x0100 #define FT_FLOW_DTR_DSR 0x0200 #define FT_FLOW_XON_XOFF 0x0400 /** @} */ /** @{ * @name Purge rx and tx buffers * @see FT_Purge */ #define FT_PURGE_RX 1 #define FT_PURGE_TX 2 /** @} */ /** @{ * @name Events * @see FT_SetEventNotification */ typedef void(*PFT_EVENT_HANDLER)(DWORD, DWORD); #define FT_EVENT_RXCHAR 1 #define FT_EVENT_MODEM_STATUS 2 #define FT_EVENT_LINE_STATUS 4 /** @} */ /** @{ * @name Timeouts * @see FT_SetTimeouts */ #define FT_DEFAULT_RX_TIMEOUT 300 #define FT_DEFAULT_TX_TIMEOUT 300 /** @} */ /** @{ * @name Device Types * @details Known supported FTDI device types supported by this library. */ typedef ULONG FT_DEVICE; enum { FT_DEVICE_BM, FT_DEVICE_AM, FT_DEVICE_100AX, FT_DEVICE_UNKNOWN, FT_DEVICE_2232C, FT_DEVICE_232R, FT_DEVICE_2232H, FT_DEVICE_4232H, FT_DEVICE_232H, FT_DEVICE_X_SERIES, FT_DEVICE_4222H_0, FT_DEVICE_4222H_1_2, FT_DEVICE_4222H_3, FT_DEVICE_4222_PROG, FT_DEVICE_900, FT_DEVICE_930, FT_DEVICE_UMFTPD3A, FT_DEVICE_2233HP, FT_DEVICE_4233HP, FT_DEVICE_2232HP, FT_DEVICE_4232HP, FT_DEVICE_233HP, FT_DEVICE_232HP, FT_DEVICE_2232HA, FT_DEVICE_4232HA, }; /** @} */ /** @{ * @name Bit Modes * @see FT_SetBitMode FT_GetBitMode */ #define FT_BITMODE_RESET 0x00 #define FT_BITMODE_ASYNC_BITBANG 0x01 #define FT_BITMODE_MPSSE 0x02 #define FT_BITMODE_SYNC_BITBANG 0x04 #define FT_BITMODE_MCU_HOST 0x08 #define FT_BITMODE_FAST_SERIAL 0x10 #define FT_BITMODE_CBUS_BITBANG 0x20 #define FT_BITMODE_SYNC_FIFO 0x40 /** @} */ /** @{ * @name FT232R CBUS Options EEPROM values */ #define FT_232R_CBUS_TXDEN 0x00 // Tx Data Enable #define FT_232R_CBUS_PWRON 0x01 // Power On #define FT_232R_CBUS_RXLED 0x02 // Rx LED #define FT_232R_CBUS_TXLED 0x03 // Tx LED #define FT_232R_CBUS_TXRXLED 0x04 // Tx and Rx LED #define FT_232R_CBUS_SLEEP 0x05 // Sleep #define FT_232R_CBUS_CLK48 0x06 // 48MHz clock #define FT_232R_CBUS_CLK24 0x07 // 24MHz clock #define FT_232R_CBUS_CLK12 0x08 // 12MHz clock #define FT_232R_CBUS_CLK6 0x09 // 6MHz clock #define FT_232R_CBUS_IOMODE 0x0A // IO Mode for CBUS bit-bang #define FT_232R_CBUS_BITBANG_WR 0x0B // Bit-bang write strobe #define FT_232R_CBUS_BITBANG_RD 0x0C // Bit-bang read strobe #define FT_232R_CBUS0_RXF 0x0D // CBUS0 RXF# #define FT_232R_CBUS1_TXE 0x0D // CBUS1 TXE# #define FT_232R_CBUS2_RD 0x0D // CBUS2 RD# #define FT_232R_CBUS3_WR 0x0D // CBUS3 WR# /** @} */ /** @{ * @name FT232H CBUS Options EEPROM values */ #define FT_232H_CBUS_TRISTATE 0x00 // Tristate #define FT_232H_CBUS_TXLED 0x01 // Tx LED #define FT_232H_CBUS_RXLED 0x02 // Rx LED #define FT_232H_CBUS_TXRXLED 0x03 // Tx and Rx LED #define FT_232H_CBUS_PWREN 0x04 // Power Enable #define FT_232H_CBUS_SLEEP 0x05 // Sleep #define FT_232H_CBUS_DRIVE_0 0x06 // Drive pin to logic 0 #define FT_232H_CBUS_DRIVE_1 0x07 // Drive pin to logic 1 #define FT_232H_CBUS_IOMODE 0x08 // IO Mode for CBUS bit-bang #define FT_232H_CBUS_TXDEN 0x09 // Tx Data Enable #define FT_232H_CBUS_CLK30 0x0A // 30MHz clock #define FT_232H_CBUS_CLK15 0x0B // 15MHz clock #define FT_232H_CBUS_CLK7_5 0x0C // 7.5MHz clock /** @} */ /** @{ * @name FT X Series CBUS Options EEPROM values */ #define FT_X_SERIES_CBUS_TRISTATE 0x00 // Tristate #define FT_X_SERIES_CBUS_TXLED 0x01 // Tx LED #define FT_X_SERIES_CBUS_RXLED 0x02 // Rx LED #define FT_X_SERIES_CBUS_TXRXLED 0x03 // Tx and Rx LED #define FT_X_SERIES_CBUS_PWREN 0x04 // Power Enable #define FT_X_SERIES_CBUS_SLEEP 0x05 // Sleep #define FT_X_SERIES_CBUS_DRIVE_0 0x06 // Drive pin to logic 0 #define FT_X_SERIES_CBUS_DRIVE_1 0x07 // Drive pin to logic 1 #define FT_X_SERIES_CBUS_IOMODE 0x08 // IO Mode for CBUS bit-bang #define FT_X_SERIES_CBUS_TXDEN 0x09 // Tx Data Enable #define FT_X_SERIES_CBUS_CLK24 0x0A // 24MHz clock #define FT_X_SERIES_CBUS_CLK12 0x0B // 12MHz clock #define FT_X_SERIES_CBUS_CLK6 0x0C // 6MHz clock #define FT_X_SERIES_CBUS_BCD_CHARGER 0x0D // Battery charger detected #define FT_X_SERIES_CBUS_BCD_CHARGER_N 0x0E // Battery charger detected inverted #define FT_X_SERIES_CBUS_I2C_TXE 0x0F // I2C Tx empty #define FT_X_SERIES_CBUS_I2C_RXF 0x10 // I2C Rx full #define FT_X_SERIES_CBUS_VBUS_SENSE 0x11 // Detect VBUS #define FT_X_SERIES_CBUS_BITBANG_WR 0x12 // Bit-bang write strobe #define FT_X_SERIES_CBUS_BITBANG_RD 0x13 // Bit-bang read strobe #define FT_X_SERIES_CBUS_TIMESTAMP 0x14 // Toggle output when a USB SOF token is received #define FT_X_SERIES_CBUS_KEEP_AWAKE 0x15 // /** @} */ /** @{ * @name Driver Types */ #define FT_DRIVER_TYPE_D2XX 0 #define FT_DRIVER_TYPE_VCP 1 /** @} */ /** @{ * @name FT_DEVICE_LIST_INFO_NODE Device Information Flags * @par Summary * These flags are used in the Flags member of FT_DEVICE_LIST_INFO_NODE to indicated the state of * the device and speed of the device. */ enum { FT_FLAGS_OPENED = 1, FT_FLAGS_HISPEED = 2 }; /** @} */ #ifdef __cplusplus extern "C" { #endif #ifdef FTD2XX_STATIC FTD2XX_API FT_STATUS WINAPI FT_Initialise( void ); FTD2XX_API void WINAPI FT_Finalise( void ); #endif // FTD2XX_STATIC /** * @name D2XX Classic Functions The functions listed in this section are compatible with all FTDI devices. */ /** @{ */ #ifndef _WIN32 /** @noop FT_SetVIDPID * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * @par Summary * A command to include a custom VID and PID combination within the internal device list table. * This will allow the driver to load for the specified VID and PID combination. * @param dwVID Device Vendor ID (VID) * @param dwPID Device Product ID (PID) * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * By default, the driver will support a limited set of VID and PID matched devices (VID 0x0403 * with PIDs for standard FTDI devices only). * @n In order to use the driver with other VID and PID combinations the FT_SetVIDPID function * must be used prior to calling FT_ListDevices, FT_Open, FT_OpenEx or FT_CreateDeviceInfoList. * @note Extra function for non-Windows platforms to compensate for lack of .INF file to specify * Vendor and Product IDs. */ FTD2XX_API FT_STATUS FT_SetVIDPID( DWORD dwVID, DWORD dwPID ); /** @noop FT_GetVIDPID * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * @par Summary * A command to retrieve the current VID and PID combination from within the internal device list table. * @param pdwVID Pointer to DWORD that will contain the internal VID * @param pdwPID Pointer to DWORD that will contain the internal PID * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * @note Extra function for non-Windows platforms to compensate for lack of .INF file to specify Vendor and Product IDs. * @see FT_SetVIDPID. */ FTD2XX_API FT_STATUS FT_GetVIDPID( DWORD * pdwVID, DWORD * pdwPID ); #endif // _WIN32 /** @noop FT_CreateDeviceInfoList * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function builds a device information list and returns the number of D2XX devices connected to the * system. The list contains information about both unopen and open devices. * @param lpdwNumDevs Pointer to unsigned long to store the number of devices connected. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * An application can use this function to get the number of devices attached to the system. It can then * allocate space for the device information list and retrieve the list using FT_GetDeviceInfoList or * FT_GetDeviceInfoDetail. * @n If the devices connected to the system change, the device info list will not be updated until * FT_CreateDeviceInfoList is called again. * @see FT_GetDeviceInfoList * @see FT_GetDeviceInfoDetail */ FTD2XX_API FT_STATUS WINAPI FT_CreateDeviceInfoList( LPDWORD lpdwNumDevs ); /** @noop FT_DEVICE_LIST_INFO_NODE * @par Summary * This structure is used for passing information about a device back from the FT_GetDeviceInfoList function. * @see FT_GetDeviceInfoList */ typedef struct _ft_device_list_info_node { ULONG Flags; ULONG Type; ULONG ID; DWORD LocId; char SerialNumber[16]; char Description[64]; FT_HANDLE ftHandle; } FT_DEVICE_LIST_INFO_NODE; /** @noop FT_GetDeviceInfoList * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function returns a device information list and the number of D2XX devices in the list. * @param *pDest Pointer to an array of FT_DEVICE_LIST_INFO_NODE structures. * @param lpdwNumDevs Pointer to the number of elements in the array. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function should only be called after calling FT_CreateDeviceInfoList. If the devices connected to the * system change, the device info list will not be updated until FT_CreateDeviceInfoList is called again. * Location ID information is not returned for devices that are open when FT_CreateDeviceInfoList is called. * Information is not available for devices which are open in other processes. In this case, the Flags * parameter of the FT_DEVICE_LIST_INFO_NODE will indicate that the device is open, but other fields will * be unpopulated. * @n The flag value is a 4-byte bit map containing miscellaneous data as defined Appendix A - Type * Definitions. Bit 0 (least significant bit) of this number indicates if the port is open (1) or closed (0). Bit 1 * indicates if the device is enumerated as a high-speed USB device (2) or a full-speed USB device (0). The * remaining bits (2 - 31) are reserved. * @n The array of FT_DEVICE_LIST_INFO_NODES contains all available data on each device. The structure of * FT_DEVICE_LIST_INFO_NODES is given in the Appendix. The storage for the list must be allocated by * the application. The number of devices returned by FT_CreateDeviceInfoList can be used to do this. * When programming in Visual Basic, LabVIEW or similar languages, FT_GetDeviceInfoDetail may be * required instead of this function. * @note Please note that Windows CE does not support location IDs. As such, the Location ID parameter in the * structure will be empty. * @see FT_CreateDeviceInfoList */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceInfoList( FT_DEVICE_LIST_INFO_NODE *pDest, LPDWORD lpdwNumDevs ); /** @noop FT_GetDeviceInfoDetail * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function returns an entry from the device information list. * @param dwIndex Index of the entry in the device info list. * @param lpdwFlags Pointer to unsigned long to store the flag value. * @param lpdwType Pointer to unsigned long to store device type. * @param lpdwID Pointer to unsigned long to store device ID. * @param lpdwLocId Pointer to unsigned long to store the device location ID. * @param lpSerialNumber Pointer to buffer to store device serial number as a nullterminated string. * @param lpDescription Pointer to buffer to store device description as a null-terminated string. * @param *pftHandle Pointer to a variable of type FT_HANDLE where the handle will be stored. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function should only be called after calling FT_CreateDeviceInfoList. If the devices connected to the * system change, the device info list will not be updated until FT_CreateDeviceInfoList is called again. * @n The index value is zero-based. * @n The flag value is a 4-byte bit map containing miscellaneous data as defined Appendix A - Type * Definitions. Bit 0 (least significant bit) of this number indicates if the port is open (1) or closed (0). Bit 1 * indicates if the device is enumerated as a high-speed USB device (2) or a full-speed USB device (0). The * remaining bits (2 - 31) are reserved. * @n Location ID information is not returned for devices that are open when FT_CreateDeviceInfoList is called. * Information is not available for devices which are open in other processes. In this case, the lpdwFlags * parameter will indicate that the device is open, but other fields will be unpopulated. * To return the whole device info list as an array of FT_DEVICE_LIST_INFO_NODE structures, use * FT_CreateDeviceInfoList. * @note Please note that Windows CE does not support location IDs. As such, the Location ID parameter in the * structure will be empty. * @see FT_CreateDeviceInfoList */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceInfoDetail( DWORD dwIndex, LPDWORD lpdwFlags, LPDWORD lpdwType, LPDWORD lpdwID, LPDWORD lpdwLocId, LPVOID lpSerialNumber, LPVOID lpDescription, FT_HANDLE *pftHandle ); /** @noop FT_ListDevices * @par Summary * Gets information concerning the devices currently connected. This function can return information such * as the number of devices connected, the device serial number and device description strings, and the * location IDs of connected devices. * @param pvArg1 Meaning depends on dwFlags. * @param pvArg2 Meaning depends on dwFlags. * @param dwFlags Determines format of returned information. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function can be used in a number of ways to return different types of information. A more powerful * way to get device information is to use the FT_CreateDeviceInfoList, FT_GetDeviceInfoList and * FT_GetDeviceInfoDetail functions as they return all the available information on devices. * In its simplest form, it can be used to return the number of devices currently connected. If * FT_LIST_NUMBER_ONLY bit is set in dwFlags, the parameter pvArg1 is interpreted as a pointer to a * DWORD location to store the number of devices currently connected. * @n It can be used to return device information: if FT_OPEN_BY_SERIAL_NUMBER bit is set in dwFlags, the * serial number string will be returned; if FT_OPEN_BY_DESCRIPTION bit is set in dwFlags, the product * description string will be returned; if FT_OPEN_BY_LOCATION bit is set in dwFlags, the Location ID will * be returned; if none of these bits is set, the serial number string will be returned by default. * @n It can be used to return device string information for a single device. If FT_LIST_BY_INDEX and * FT_OPEN_BY_SERIAL_NUMBER or FT_OPEN_BY_DESCRIPTION bits are set in dwFlags, the parameter * pvArg1 is interpreted as the index of the device, and the parameter pvArg2 is interpreted as a pointer to * a buffer to contain the appropriate string. Indexes are zero-based, and the error code * FT_DEVICE_NOT_FOUND is returned for an invalid index. * @n It can be used to return device string information for all connected devices. If FT_LIST_ALL and * FT_OPEN_BY_SERIAL_NUMBER or FT_OPEN_BY_DESCRIPTION bits are set in dwFlags, the parameter * pvArg1 is interpreted as a pointer to an array of pointers to buffers to contain the appropriate strings and * the parameter pvArg2 is interpreted as a pointer to a DWORD location to store the number of devices * currently connected. Note that, for pvArg1, the last entry in the array of pointers to buffers should be a * NULL pointer so the array will contain one more location than the number of devices connected. * @n The location ID of a device is returned if FT_LIST_BY_INDEX and FT_OPEN_BY_LOCATION bits are set in * dwFlags. In this case the parameter pvArg1 is interpreted as the index of the device, and the parameter * pvArg2 is interpreted as a pointer to a variable of type long to contain the location ID. Indexes are * zerobased, and the error code FT_DEVICE_NOT_FOUND is returned for an invalid index. Please note that * Windows CE and Linux do not support location IDs. * @n The location IDs of all connected devices are returned if FT_LIST_ALL and FT_OPEN_BY_LOCATION bits * are set in dwFlags. In this case, the parameter pvArg1 is interpreted as a pointer to an array of variables * of type long to contain the location IDs, and the parameter pvArg2 is interpreted as a pointer to a * DWORD location to store the number of devices currently connected. * @see FT_CreateDeviceInfoList * @see FT_GetDeviceInfoList * @see FT_GetDeviceInfoDetail */ FTD2XX_API FT_STATUS WINAPI FT_ListDevices( PVOID pvArg1, PVOID pvArg2, DWORD dwFlags ); /** @noop FT_Open * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Open the device and return a handle which will be used for subsequent accesses. * @param deviceNumber Index of the device to open. Indices are 0 based. * @param pHandle Pointer to a variable of type FT_HANDLE where the handle will be stored. This handle must * be used to access the device. * @return * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * Although this function can be used to open multiple devices by setting iDevice to 0, 1, 2 etc. there is no * ability to open a specific device. To open named devices, use the function FT_OpenEx. * @see FT_OpenEx. */ FTD2XX_API FT_STATUS WINAPI FT_Open( int deviceNumber, FT_HANDLE *pHandle ); /** @noop FT_OpenEx * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Open the specified device and return a handle that will be used for subsequent accesses. The device can * be specified by its serial number, device description or location. * @n This function can also be used to open multiple devices simultaneously. Multiple devices can be specified * by serial number, device description or location ID (location information derived from the physical * location of a device on USB). Location IDs for specific USB ports can be obtained using the utility * USBView and are given in hexadecimal format. Location IDs for devices connected to a system can be * obtained by calling FT_GetDeviceInfoList or FT_ListDevices with the appropriate flags. * @param pvArg1 Pointer to an argument whose type depends on the value of dwFlags. * It is normally be interpreted as a pointer to a null terminated string. * @param dwFlags FT_OPEN_BY_SERIAL_NUMBER, FT_OPEN_BY_DESCRIPTION or FT_OPEN_BY_LOCATION. * @param pHandle Pointer to a variable of type FT_HANDLE where the handle will be * stored. This handle must be used to access the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The parameter specified in pvArg1 depends on dwFlags: if dwFlags is FT_OPEN_BY_SERIAL_NUMBER, * pvArg1 is interpreted as a pointer to a null-terminated string that represents the serial number of the * device; if dwFlags is FT_OPEN_BY_DESCRIPTION, pvArg1 is interpreted as a pointer to a nullterminated * string that represents the device description; if dwFlags is FT_OPEN_BY_LOCATION, pvArg1 * is interpreted as a long value that contains the location ID of the device. Please note that Windows CE * and Linux do not support location IDs. * @n ftHandle is a pointer to a variable of type FT_HANDLE where the handle is to be stored. This handle must * be used to access the device. */ FTD2XX_API FT_STATUS WINAPI FT_OpenEx( PVOID pvArg1, DWORD dwFlags, FT_HANDLE *pHandle ); /** @noop FT_Close * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Close an open device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_Close( FT_HANDLE ftHandle ); /** @noop FT_Read * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read data from the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to the buffer that receives the data from the device. * @param dwBytesToRead Number of bytes to be read from the device. * @param lpdwBytesReturned Pointer to a variable of type DWORD which receives the number of * bytes read from the device. * @returns * FT_OK if successful, FT_IO_ERROR otherwise. $see FT_STATUS * @remarks * FT_Read always returns the number of bytes read in lpdwBytesReturned. * @n This function does not return until dwBytesToRead bytes have been read into the buffer. The number of * bytes in the receive queue can be determined by calling FT_GetStatus or FT_GetQueueStatus, and * passed to FT_Read as dwBytesToRead so that the function reads the device and returns immediately. * When a read timeout value has been specified in a previous call to FT_SetTimeouts, FT_Read returns * when the timer expires or dwBytesToRead have been read, whichever occurs first. If the timeout * occurred, FT_Read reads available data into the buffer and returns FT_OK. * @n An application should use the function return value and lpdwBytesReturned when processing the buffer. * If the return value is FT_OK, and lpdwBytesReturned is equal to dwBytesToRead then FT_Read has * completed normally. If the return value is FT_OK, and lpdwBytesReturned is less then dwBytesToRead * then a timeout has occurred and the read has been partially completed. Note that if a timeout occurred * and no data was read, the return value is still FT_OK. * @n A return value of FT_IO_ERROR suggests an error in the parameters of the function, or a fatal error like a * USB disconnect has occurred. */ FTD2XX_API FT_STATUS WINAPI FT_Read( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD dwBytesToRead, LPDWORD lpdwBytesReturned ); /** @noop FT_Write * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write data to the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to the buffer that contains the data to be written to the device. * @param dwBytesToWrite Number of bytes to write to the device. * @param lpdwBytesWritten Pointer to a variable of type DWORD which receives the number of * bytes written to the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_Write( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD dwBytesToWrite, LPDWORD lpdwBytesWritten ); /** @noop FT_SetBaudRate * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the baud rate for the device. * @param ftHandle Handle of the device. * @param dwBaudRate Baud rate. * @returns * FT_OK if successful, otherwise the return value is an FT error code */ FTD2XX_API FT_STATUS WINAPI FT_SetBaudRate( FT_HANDLE ftHandle, ULONG dwBaudRate ); /** @noop FT_SetDivisor * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the baud rate for the device. It is used to set non-standard baud rates. * @param ftHandle Handle of the device. * @param usDivisor Divisor. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is no longer required as FT_SetBaudRate will now automatically calculate the required * divisor for a requested baud rate. The application note "Setting baud rates for the FT8U232AM" is * available from the Application Notes section of the FTDI website describes how to calculate the divisor for * a non-standard baud rate. */ FTD2XX_API FT_STATUS WINAPI FT_SetDivisor( FT_HANDLE ftHandle, USHORT usDivisor ); /** @noop FT_SetDataCharacteristics * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the data characteristics for the device. * @param ftHandle Handle of the device. * @param uWordLength Number of bits per word - must be FT_BITS_8 or FT_BITS_7. * @param uStopBits Number of stop bits - must be FT_STOP_BITS_1 or FT_STOP_BITS_2. * @param uParity Parity - must be FT_PARITY_NONE, FT_PARITY_ODD, FT_PARITY_EVEN, * FT_PARITY_MARK or FT_PARITY SPACE. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetDataCharacteristics( FT_HANDLE ftHandle, UCHAR uWordLength, UCHAR uStopBits, UCHAR uParity ); /** @noop FT_SetTimeouts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the read and write timeouts for the device. * @param ftHandle Handle of the device. * @param dwReadTimeout Read timeout in milliseconds. * @param dwWriteTimeout Write timeout in milliseconds. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetTimeouts( FT_HANDLE ftHandle, ULONG dwReadTimeout, ULONG dwWriteTimeout ); /** @noop FT_SetFlowControl * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the flow control for the device. * @param ftHandle Handle of the device. * @param usFlowControl Must be one of FT_FLOW_NONE, FT_FLOW_RTS_CTS, FT_FLOW_DTR_DSR or * FT_FLOW_XON_XOFF. * @param uXonChar Character used to signal Xon. Only used if flow control is FT_FLOW_XON_XOFF. * @param uXoffChar Character used to signal Xoff. Only used if flow control is FT_FLOW_XON_XOFF. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetFlowControl( FT_HANDLE ftHandle, USHORT usFlowControl, UCHAR uXonChar, UCHAR uXoffChar ); /** @noop FT_SetDtr * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the Data Terminal Ready (DTR) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function asserts the Data Terminal Ready (DTR) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_SetDtr( FT_HANDLE ftHandle ); /** @noop FT_ClrDtr * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function clears the Data Terminal Ready (DTR) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function de-asserts the Data Terminal Ready (DTR) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_ClrDtr( FT_HANDLE ftHandle ); /** @noop FT_SetRts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the Request To Send (RTS) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function asserts the Request To Send (RTS) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_SetRts( FT_HANDLE ftHandle ); /** @noop FT_ClrRts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function clears the Request To Send (RTS) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function de-asserts the Request To Send (RTS) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_ClrRts( FT_HANDLE ftHandle ); /** @noop FT_GetModemStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the modem status and line status from the device. * @param ftHandle Handle of the device. * @param lpdwModemStatus Pointer to a variable of type DWORD which receives the modem * status and line status from the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The least significant byte of the lpdwModemStatus value holds the modem status. On Windows and * Windows CE, the line status is held in the second least significant byte of the lpdwModemStatus value. * @n The modem status is bit-mapped as follows: Clear To Send (CTS) = 0x10, Data Set Ready (DSR) = 0x20, * Ring Indicator (RI) = 0x40, Data Carrier Detect (DCD) = 0x80. * @n The line status is bit-mapped as follows: Overrun Error (OE) = 0x02, Parity Error (PE) = 0x04, Framing * Error (FE) = 0x08, Break Interrupt (BI) = 0x10. */ FTD2XX_API FT_STATUS WINAPI FT_GetModemStatus( FT_HANDLE ftHandle, ULONG *lpdwModemStatus ); /** @noop FT_GetQueueStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the number of bytes in the receive queue. * @param ftHandle Handle of the device. * @param lpdwAmountInRxQueue Pointer to a variable of type DWORD which receives the number of * bytes in the receive queue. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_GetQueueStatus( FT_HANDLE ftHandle, DWORD *lpdwAmountInRxQueue ); /** @noop FT_GetDeviceInfo * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Get device information for an open device. * @param ftHandle Handle of the device. * @param lpftDevice Pointer to unsigned long to store device type. * @param lpdwID Pointer to unsigned long to store device ID. * @param pcSerialNumber Pointer to buffer to store device serial number as a nullterminated string. * @param pcDescription Pointer to buffer to store device description as a null-terminated string. * @param pvDummy Reserved for future use - should be set to NULL. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to return the device type, device ID, device description and serial number. * The device ID is encoded in a DWORD - the most significant word contains the vendor ID, and the least * significant word contains the product ID. So the returned ID 0x04036001 corresponds to the device ID * VID_0403&PID_6001. */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceInfo( FT_HANDLE ftHandle, FT_DEVICE *lpftDevice, LPDWORD lpdwID, PCHAR pcSerialNumber, PCHAR pcDescription, LPVOID pvDummy ); #ifndef _WIN32 /** * @note Extra function for non-Windows platforms to compensate for lack of .INF file to specify Vendor and Product IDs. */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceLocId( FT_HANDLE ftHandle, LPDWORD lpdwLocId ); #endif // _WIN32 /** @noop FT_GetDriverVersion * @par Supported Operating Systems * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function returns the D2XX driver version number. * @param ftHandle Handle of the device. * @param lpdwDriverVersion Pointer to the driver version number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * A version number consists of major, minor and build version numbers contained in a 4-byte field * (unsigned long). Byte0 (least significant) holds the build version, Byte1 holds the minor version, and * Byte2 holds the major version. Byte3 is currently set to zero. * @n For example, driver version "2.04.06" is represented as 0x00020406. Note that a device has to be * opened before this function can be called. */ FTD2XX_API FT_STATUS WINAPI FT_GetDriverVersion( FT_HANDLE ftHandle, LPDWORD lpdwDriverVersion ); /** @noop FT_GetLibraryVersion * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @n * This function returns D2XX DLL or library version number. * @param lpdwDLLVersion Pointer to the DLL or library version number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * A version number consists of major, minor and build version numbers contained in a 4-byte field * (unsigned long). Byte0 (least significant) holds the build version, Byte1 holds the minor version, and * Byte2 holds the major version. Byte3 is currently set to zero. * @n For example, D2XX DLL version "3.01.15" is represented as 0x00030115. Note that this function does * not take a handle, and so it can be called without opening a device. */ FTD2XX_API FT_STATUS WINAPI FT_GetLibraryVersion( LPDWORD lpdwDLLVersion ); /** @noop FT_GetComPortNumber * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Retrieves the COM port associated with a device. * @param ftHandle Handle of the device. * @param lplComPortNumber Pointer to a variable of type LONG which receives the COM port number * associated with the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is only available when using the Windows CDM driver as both the D2XX and VCP drivers can * be installed at the same time. * @n If no COM port is associated with the device, lplComPortNumber will have a value of -1 */ FTD2XX_API FT_STATUS WINAPI FT_GetComPortNumber( FT_HANDLE ftHandle, LPLONG lplComPortNumber ); /** @noop FT_GetStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the device status including number of characters in the receive queue, number of characters in the * transmit queue, and the current event status. * @param ftHandle Handle of the device. * @param lpdwAmountInRxQueue Pointer to a variable of type DWORD which receives the number of characters in * the receive queue. * @param lpdwAmountInTxQueue Pointer to a variable of type DWORD which receives the number of characters in * the transmit queue. * @param lpdwEventStatus Pointer to a variable of type DWORD which receives the current state of * the event status. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * For an example of how to use this function, see the sample code in FT_SetEventNotification. */ FTD2XX_API FT_STATUS WINAPI FT_GetStatus( FT_HANDLE ftHandle, DWORD *lpdwAmountInRxQueue, DWORD *lpdwAmountInTxQueue, DWORD *lpdwEventStatus ); /** @noop FT_SetEventNotification * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Sets conditions for event notification. * @param ftHandle Handle of the device. * @param dwEventMask Conditions that cause the event to be set. * @param pvArg Interpreted as the handle of an event. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * An application can use this function to setup conditions which allow a thread to block until one of the * conditions is met. Typically, an application will create an event, call this function, then block on the * event. When the conditions are met, the event is set, and the application thread unblocked. * dwEventMask is a bit-map that describes the events the application is interested in. pvArg is interpreted * as the handle of an event which has been created by the application. If one of the event conditions is * met, the event is set. * @n If FT_EVENT_RXCHAR is set in dwEventMask, the event will be set when a character has been received * by the device. * @n If FT_EVENT_MODEM_STATUS is set in dwEventMask, the event will be set when a change in the modem * signals has been detected by the device. * @n If FT_EVENT_LINE_STATUS is set in dwEventMask, the event will be set when a change in the line status * has been detected by the device. */ FTD2XX_API FT_STATUS WINAPI FT_SetEventNotification( FT_HANDLE ftHandle, DWORD dwEventMask, PVOID pvArg ); /** @noop FT_SetChars * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the special characters for the device. * @param ftHandle Handle of the device. * @param uEventChar Event character. * @param uEventCharEnabled 0 if event character disabled, non-zero otherwise. * @param uErrorChar Error character. * @param uErrorCharEnabled 0 if error character disabled, non-zero otherwise. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function allows for inserting specified characters in the data stream to represent events firing or * errors occurring. */ FTD2XX_API FT_STATUS WINAPI FT_SetChars( FT_HANDLE ftHandle, UCHAR uEventChar, UCHAR uEventCharEnabled, UCHAR uErrorChar, UCHAR uErrorCharEnabled ); /** @noop FT_SetBreakOn * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Sets the BREAK condition for the device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code */ FTD2XX_API FT_STATUS WINAPI FT_SetBreakOn( FT_HANDLE ftHandle ); /** @noop FT_SetBreakOff * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Resets the BREAK condition for the device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetBreakOff( FT_HANDLE ftHandle ); /** @noop FT_Purge * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function purges receive and transmit buffers in the device. * @param ftHandle Handle of the device. * @param ulMask Combination of FT_PURGE_RX and FT_PURGE_TX. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_Purge( FT_HANDLE ftHandle, ULONG ulMask ); /** @noop FT_ResetDevice * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sends a reset command to the device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_ResetDevice( FT_HANDLE ftHandle ); /** @noop FT_ResetPort * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Send a reset command to the port. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to attempt to recover the port after a failure. It is not equivalent * to an unplug-replug event. For the equivalent of an unplug-replug event, use FT_CyclePort. * @see FT_CyclePort */ FTD2XX_API FT_STATUS WINAPI FT_ResetPort( FT_HANDLE ftHandle ); /** @noop FT_CyclePort * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Send a cycle command to the USB port. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The effect of this function is the same as disconnecting then reconnecting the device from * USB. Possible use of this function is situations where a fatal error has occurred and it is * difficult, or not possible, to recover without unplugging and replugging the USB cable. * This function can also be used after reprogramming the EEPROM to force the FTDI device to * read the new EEPROM contents which would otherwise require a physical disconnect-reconnect. * @n As the current session is not restored when the driver is reloaded, the application must * be able to recover after calling this function. It is ithe responisbility of the application * to close the handle after successfully calling FT_CyclePort. * @n For FT4232H, FT2232H and FT2232 devices, FT_CyclePort will only work under Windows XP and later. */ FTD2XX_API FT_STATUS WINAPI FT_CyclePort( FT_HANDLE ftHandle ); /** @noop FT_Rescan * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * This function can be of use when trying to recover devices programatically. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * Calling FT_Rescan is equivalent to clicking the "Scan for hardware changes" button in the Device * Manager. Only USB hardware is checked for new devices. All USB devices are scanned, not just FTDI * devices. */ FTD2XX_API FT_STATUS WINAPI FT_Rescan( void ); /** @noop FT_Reload * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * This function forces a reload of the driver for devices with a specific VID and PID combination. * @param wVID Vendor ID of the devices to reload the driver for. * @param wPID Product ID of the devices to reload the driver for. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * Calling FT_Reload forces the operating system to unload and reload the driver for the specified device * IDs. If the VID and PID parameters are null, the drivers for USB root hubs will be reloaded, causing all * USB devices connected to reload their drivers. Please note that this function will not work correctly on * 64-bit Windows when called from a 32-bit application. */ FTD2XX_API FT_STATUS WINAPI FT_Reload( WORD wVID, WORD wPID ); /** @noop FT_SetResetPipeRetryCount * @par Supported Operating Systems * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Set the ResetPipeRetryCount value. * @param ftHandle Handle of the device. * @param dwCount Unsigned long containing required ResetPipeRetryCount. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to set the ResetPipeRetryCount. ResetPipeRetryCount controls the maximum * number of times that the driver tries to reset a pipe on which an error has occurred. * ResetPipeRequestRetryCount defaults to 50. It may be necessary to increase this value in noisy * environments where a lot of USB errors occur. */ FTD2XX_API FT_STATUS WINAPI FT_SetResetPipeRetryCount( FT_HANDLE ftHandle, DWORD dwCount ); /** @noop FT_StopInTask * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Stops the driver's IN task. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to put the driver's IN task (read) into a wait state. It can be used in situations * where data is being received continuously, so that the device can be purged without more data being * received. It is used together with FT_RestartInTask which sets the IN task running again. * @see FT_RestartInTask */ FTD2XX_API FT_STATUS WINAPI FT_StopInTask( FT_HANDLE ftHandle ); /** @noop FT_RestartInTask * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Restart the driver's IN task. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to restart the driver's IN task (read) after it has been stopped by a call to * FT_StopInTask. * @see FT_StopInTask */ FTD2XX_API FT_STATUS WINAPI FT_RestartInTask( FT_HANDLE ftHandle ); /** @noop FT_SetDeadmanTimeout * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function allows the maximum time in milliseconds that a USB request can remain outstanding to * be set. * @param ftHandle Handle of the device. * @param ulDeadmanTimeout Deadman timeout value in milliseconds. Default value is 5000. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The deadman timeout is referred to in application note AN232B-10 Advanced Driver Options from the * FTDI web site as the USB timeout. It is unlikely that this function will be required by most users. */ FTD2XX_API FT_STATUS WINAPI FT_SetDeadmanTimeout( FT_HANDLE ftHandle, ULONG ulDeadmanTimeout ); /** @noop FT_IoCtl * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_IoCtl( FT_HANDLE ftHandle, DWORD dwIoControlCode, LPVOID lpInBuf, DWORD nInBufSize, LPVOID lpOutBuf, DWORD nOutBufSize, LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped ); /** @noop FT_SetWaitMask * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_SetWaitMask( FT_HANDLE ftHandle, DWORD Mask ); /** @noop FT_WaitOnMask * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_WaitOnMask( FT_HANDLE ftHandle, DWORD *Mask ); /** @noop FT_GetEventStatus * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_GetEventStatus( FT_HANDLE ftHandle, DWORD *dwEventDWord ); /** @} */ /** @name EEPROM Programming Interface Functions * FTDI device EEPROMs can be both read and programmed using the functions listed in this section. * @n Please note the following information: * @li The Maximum length of the Manufacturer, ManufacturerId, Description and SerialNumber strings * is 48 words (1 word = 2 bytes). * @li The first two characters of the serial number are the manufacturer ID. * @li The Manufacturer string length plus the Description string length is less than or equal to 40 * characters with the following functions: FT_EE_Read, FT_EE_Program, FT_EE_ProgramEx, * FT_EEPROM_Read, FT_EEPROM_Program. * @li The serial number should be maximum 15 characters long on single port devices (eg FT232R, FT-X) * and 14 characters on multi port devices (eg FT2232H, FT4232H). If it is longer then it may be * truncated and will not have a null terminator. * For instance a serial number which is 15 characters long on a multi-port device will have an * effective serial number which is 16 characters long since the serial number is appended with the * channel identifier (A,B,etc). The buffer used to return the string from the API is only 16 * characters in size so the NULL termination will be lost. * @n If the serial number or description are too long in the EEPROM or configuration of a device then the * strings returned by FT_GetDeviceInfo and FT_ListDevices may not be NULL terminated */ /** @{ */ /** @noop FT_ReadEE * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read a value from an EEPROM location. * @param ftHandle Handle of the device. * @param dwWordOffset EEPROM location to read from. * @param lpwValue Pointer to the WORD value read from the EEPROM. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * EEPROMs for FTDI devices are organised by WORD, so each value returned is 16-bits wide. */ FTD2XX_API FT_STATUS WINAPI FT_ReadEE( FT_HANDLE ftHandle, DWORD dwWordOffset, LPWORD lpwValue ); /** @noop FT_WriteEE * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write a value to an EEPROM location. * @param ftHandle Handle of the device. * @param dwWordOffset EEPROM location to read from. * @param wValue The WORD value write to the EEPROM. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * EEPROMs for FTDI devices are organised by WORD, so each value written to the EEPROM is * 16-bits wide. */ FTD2XX_API FT_STATUS WINAPI FT_WriteEE( FT_HANDLE ftHandle, DWORD dwWordOffset, WORD wValue ); /** @noop FT_EraseEE * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Erases the device EEPROM. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function will erase the entire contents of an EEPROM, including the user area. * Note that the FT232R and FT245R devices have an internal EEPROM that cannot be erased. */ FTD2XX_API FT_STATUS WINAPI FT_EraseEE( FT_HANDLE ftHandle ); /** * Structure to hold program data for FT_EE_Program, FT_EE_ProgramEx, FT_EE_Read * and FT_EE_ReadEx functions. * @see FT_EE_Read * @see FT_EE_ReadEx * @see FT_EE_Program * @see FT_EE_ProgramEx */ typedef struct ft_program_data { DWORD Signature1; /// Header - must be 0x00000000 DWORD Signature2; /// Header - must be 0xffffffff DWORD Version; /// Header - FT_PROGRAM_DATA version // 0 = original // 1 = FT2232 extensions // 2 = FT232R extensions // 3 = FT2232H extensions // 4 = FT4232H extensions // 5 = FT232H extensions WORD VendorId; /// 0x0403 WORD ProductId; /// 0x6001 char *Manufacturer; /// "FTDI" char *ManufacturerId; /// "FT" char *Description; /// "USB HS Serial Converter" char *SerialNumber; /// "FT000001" if fixed, or NULL WORD MaxPower; /// 0 < MaxPower <= 500 WORD PnP; /// 0 = disabled, 1 = enabled WORD SelfPowered; /// 0 = bus powered, 1 = self powered WORD RemoteWakeup; /// 0 = not capable, 1 = capable /// Rev4 (FT232B) extensions UCHAR Rev4; /// non-zero if Rev4 chip, zero otherwise UCHAR IsoIn; /// non-zero if in endpoint is isochronous UCHAR IsoOut; /// non-zero if out endpoint is isochronous UCHAR PullDownEnable; /// non-zero if pull down enabled UCHAR SerNumEnable; /// non-zero if serial number to be used UCHAR USBVersionEnable; /// non-zero if chip uses USBVersion WORD USBVersion; /// BCD (0x0200 => USB2) /// Rev 5 (FT2232) extensions UCHAR Rev5; /// non-zero if Rev5 chip, zero otherwise UCHAR IsoInA; /// non-zero if in endpoint is isochronous UCHAR IsoInB; /// non-zero if in endpoint is isochronous UCHAR IsoOutA; /// non-zero if out endpoint is isochronous UCHAR IsoOutB; /// non-zero if out endpoint is isochronous UCHAR PullDownEnable5; /// non-zero if pull down enabled UCHAR SerNumEnable5; /// non-zero if serial number to be used UCHAR USBVersionEnable5; /// non-zero if chip uses USBVersion WORD USBVersion5; /// BCD (0x0200 => USB2) UCHAR AIsHighCurrent; /// non-zero if interface is high current UCHAR BIsHighCurrent; /// non-zero if interface is high current UCHAR IFAIsFifo; /// non-zero if interface is 245 FIFO UCHAR IFAIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR IFAIsFastSer; /// non-zero if interface is Fast serial UCHAR AIsVCP; /// non-zero if interface is to use VCP drivers UCHAR IFBIsFifo; /// non-zero if interface is 245 FIFO UCHAR IFBIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR IFBIsFastSer; /// non-zero if interface is Fast serial UCHAR BIsVCP; /// non-zero if interface is to use VCP drivers /// Rev 6 (FT232R) extensions UCHAR UseExtOsc; /// Use External Oscillator UCHAR HighDriveIOs; /// High Drive I/Os UCHAR EndpointSize; /// Endpoint size UCHAR PullDownEnableR; /// non-zero if pull down enabled UCHAR SerNumEnableR; /// non-zero if serial number to be used UCHAR InvertTXD; /// non-zero if invert TXD UCHAR InvertRXD; /// non-zero if invert RXD UCHAR InvertRTS; /// non-zero if invert RTS UCHAR InvertCTS; /// non-zero if invert CTS UCHAR InvertDTR; /// non-zero if invert DTR UCHAR InvertDSR; /// non-zero if invert DSR UCHAR InvertDCD; /// non-zero if invert DCD UCHAR InvertRI; /// non-zero if invert RI UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control UCHAR RIsD2XX; /// non-zero if using D2XX driver /// Rev 7 (FT2232H) Extensions UCHAR PullDownEnable7; /// non-zero if pull down enabled UCHAR SerNumEnable7; /// non-zero if serial number to be used UCHAR ALSlowSlew; /// non-zero if AL pins have slow slew UCHAR ALSchmittInput; /// non-zero if AL pins are Schmitt input UCHAR ALDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR AHSlowSlew; /// non-zero if AH pins have slow slew UCHAR AHSchmittInput; /// non-zero if AH pins are Schmitt input UCHAR AHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BLSlowSlew; /// non-zero if BL pins have slow slew UCHAR BLSchmittInput; /// non-zero if BL pins are Schmitt input UCHAR BLDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BHSlowSlew; /// non-zero if BH pins have slow slew UCHAR BHSchmittInput; /// non-zero if BH pins are Schmitt input UCHAR BHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR IFAIsFifo7; /// non-zero if interface is 245 FIFO UCHAR IFAIsFifoTar7; /// non-zero if interface is 245 FIFO CPU target UCHAR IFAIsFastSer7; /// non-zero if interface is Fast serial UCHAR AIsVCP7; /// non-zero if interface is to use VCP drivers UCHAR IFBIsFifo7; /// non-zero if interface is 245 FIFO UCHAR IFBIsFifoTar7; /// non-zero if interface is 245 FIFO CPU target UCHAR IFBIsFastSer7; /// non-zero if interface is Fast serial UCHAR BIsVCP7; /// non-zero if interface is to use VCP drivers UCHAR PowerSaveEnable; /// non-zero if using BCBUS7 to save power for self-powered designs /// Rev 8 (FT4232H) Extensions UCHAR PullDownEnable8; /// non-zero if pull down enabled UCHAR SerNumEnable8; /// non-zero if serial number to be used UCHAR ASlowSlew; /// non-zero if A pins have slow slew UCHAR ASchmittInput; /// non-zero if A pins are Schmitt input UCHAR ADriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BSlowSlew; /// non-zero if B pins have slow slew UCHAR BSchmittInput; /// non-zero if B pins are Schmitt input UCHAR BDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR CSlowSlew; /// non-zero if C pins have slow slew UCHAR CSchmittInput; /// non-zero if C pins are Schmitt input UCHAR CDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR DSlowSlew; /// non-zero if D pins have slow slew UCHAR DSchmittInput; /// non-zero if D pins are Schmitt input UCHAR DDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ARIIsTXDEN; /// non-zero if port A uses RI as RS485 TXDEN UCHAR BRIIsTXDEN; /// non-zero if port B uses RI as RS485 TXDEN UCHAR CRIIsTXDEN; /// non-zero if port C uses RI as RS485 TXDEN UCHAR DRIIsTXDEN; /// non-zero if port D uses RI as RS485 TXDEN UCHAR AIsVCP8; /// non-zero if interface is to use VCP drivers UCHAR BIsVCP8; /// non-zero if interface is to use VCP drivers UCHAR CIsVCP8; /// non-zero if interface is to use VCP drivers UCHAR DIsVCP8; /// non-zero if interface is to use VCP drivers /// Rev 9 (FT232H) Extensions UCHAR PullDownEnableH; /// non-zero if pull down enabled UCHAR SerNumEnableH; /// non-zero if serial number to be used UCHAR ACSlowSlewH; /// non-zero if AC pins have slow slew UCHAR ACSchmittInputH; /// non-zero if AC pins are Schmitt input UCHAR ACDriveCurrentH; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ADSlowSlewH; /// non-zero if AD pins have slow slew UCHAR ADSchmittInputH; /// non-zero if AD pins are Schmitt input UCHAR ADDriveCurrentH; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR Cbus0H; /// Cbus Mux control UCHAR Cbus1H; /// Cbus Mux control UCHAR Cbus2H; /// Cbus Mux control UCHAR Cbus3H; /// Cbus Mux control UCHAR Cbus4H; /// Cbus Mux control UCHAR Cbus5H; /// Cbus Mux control UCHAR Cbus6H; /// Cbus Mux control UCHAR Cbus7H; /// Cbus Mux control UCHAR Cbus8H; /// Cbus Mux control UCHAR Cbus9H; /// Cbus Mux control UCHAR IsFifoH; /// non-zero if interface is 245 FIFO UCHAR IsFifoTarH; /// non-zero if interface is 245 FIFO CPU target UCHAR IsFastSerH; /// non-zero if interface is Fast serial UCHAR IsFT1248H; /// non-zero if interface is FT1248 UCHAR FT1248CpolH; /// FT1248 clock polarity - clock idle high (1) or clock idle low (0) UCHAR FT1248LsbH; /// FT1248 data is LSB (1) or MSB (0) UCHAR FT1248FlowControlH; /// FT1248 flow control enable UCHAR IsVCPH; /// non-zero if interface is to use VCP drivers UCHAR PowerSaveEnableH; /// non-zero if using ACBUS7 to save power for self-powered designs } FT_PROGRAM_DATA, *PFT_PROGRAM_DATA; /** @noop FT_EE_Read * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read the contents of the EEPROM. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA * that contains storage for the data to be read from the EEPROM. * @n The function does not perform any checks on buffer sizes, so the buffers passed in the * FT_PROGRAM_DATA structure must be big enough to accommodate their respective strings (including * null terminators). The sizes shown in the following example are more than adequate and can be rounded * down if necessary. The restriction is that the Manufacturer string length plus the Description string * length is less than or equal to 40 characters. * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being used. * This is done through the Signature1, Signature2 and Version elements of the structure. Signature1 * should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be set to use * whichever version is required. For compatibility with all current devices Version should be set to the * latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * @see FT_PROGRAM_DATA * */ FTD2XX_API FT_STATUS WINAPI FT_EE_Read( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData ); /** @noop FT_EE_ReadEx * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read the contents of the EEPROM and pass strings separately. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This variation of the standard FT_EE_Read function was included to provide support for languages such * as LabVIEW where problems can occur when string pointers are contained in a structure. * @n This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA that * contains storage for the data to be read from the EEPROM. * @n The function does not perform any checks on buffer sizes, so the buffers passed in the * FT_PROGRAM_DATA structure must be big enough to accommodate their respective strings (including * null terminators). * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being used. * This is done through the Signature1, Signature2 and Version elements of the structure. Signature1 * should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be set to use * whichever version is required. For compatibility with all current devices Version should be set to the * latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * @n The string parameters in the FT_PROGRAM_DATA structure should be passed as DWORDs to avoid * overlapping of parameters. All string pointers are passed out separately from the FT_PROGRAM_DATA * structure. * @see FT_PROGRAM_DATA * */ FTD2XX_API FT_STATUS WINAPI FT_EE_ReadEx( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @noop FT_EE_Program * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Program the EEPROM. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA * that contains the data to write to the EEPROM. The data is written to EEPROM, then read back and * verified. * @n If the SerialNumber field in FT_PROGRAM_DATA is NULL, or SerialNumber points to a NULL string, * a serial number based on the ManufacturerId and the current date and time will be generated. The * Manufacturer string length plus the Description string length must be less than or equal to 40 * characters. * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being * used. This is done through the Signature1, Signature2 and Version elements of the structure. * Signature1 should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be * set to use whichever version is required. For compatibility with all current devices Version * should be set to the latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * If pData is NULL, the structure version will default to 0 (original BM series) and the device will * be programmed with the default data. * @see FT_PROGRAM_DATA */ FTD2XX_API FT_STATUS WINAPI FT_EE_Program( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData ); /** @noop FT_EE_ProgramEx * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Program the EEPROM and pass strings separately. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This variation of the FT_EE_Program function was included to provide support for languages such * as LabVIEW where problems can occur when string pointers are contained in a structure. * @n This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA * that contains the data to write to the EEPROM. The data is written to EEPROM, then read back and * verified. The string pointer parameters in the FT_PROGRAM_DATA structure should be allocated as * DWORDs to avoid overlapping of parameters. The string parameters are then passed in separately. * @n If the SerialNumber field is NULL, or SerialNumber points to a NULL string, a serial number based * on the ManufacturerId and the current date and time will be generated. The Manufacturer string * length plus the Description string length must be less than or equal to 40 characters. * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being used. * This is done through the Signature1, Signature2 and Version elements of the structure. Signature1 * should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be set to use * whichever version is required. For compatibility with all current devices Version should be set to the * latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * If pData is NULL, the structure version will default to 0 (original BM series) and the device will be * programmed with the default data. * @see FT_PROGRAM_DATA */ FTD2XX_API FT_STATUS WINAPI FT_EE_ProgramEx( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @noop FT_EE_UASize * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Get the available size of the EEPROM user area. * @param ftHandle Handle of the device. * @param lpdwSize Pointer to a DWORD that receives the available size, in bytes, of the EEPROM * user area. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The user area of an FTDI device EEPROM is the total area of the EEPROM that is unused by device * configuration information and descriptors. This area is available to the user to store information * specific to their application. The size of the user area depends on the length of the Manufacturer, * ManufacturerId, Description and SerialNumber strings programmed into the EEPROM. */ FTD2XX_API FT_STATUS WINAPI FT_EE_UASize( FT_HANDLE ftHandle, LPDWORD lpdwSize ); /** @noop FT_EE_UARead * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read the contents of the EEPROM user area. * @param ftHandle Handle of the device. * @param pucData Pointer to a buffer that contains storage for data to be read. * @param dwDataLen Size, in bytes, of buffer that contains storage for the data to be read. * @param lpdwBytesRead Pointer to a DWORD that receives the number of bytes read. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pucData as a pointer to an array of bytes of size * dwDataLen that contains storage for the data to be read from the EEPROM user area. The actual * number of bytes read is stored in the DWORD referenced by lpdwBytesRead. * @n If dwDataLen is less than the size of the EEPROM user area, then dwDataLen bytes are read * into the buffer. Otherwise, the whole of the EEPROM user area is read into the buffer. The * available user area size can be determined by calling FT_EE_UASize. * @n An application should check the function return value and lpdwBytesRead when FT_EE_UARead * returns. */ FTD2XX_API FT_STATUS WINAPI FT_EE_UARead( FT_HANDLE ftHandle, PUCHAR pucData, DWORD dwDataLen, LPDWORD lpdwBytesRead ); /** @noop FT_EE_UAWrite * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write data into the EEPROM user area. * @param ftHandle Handle of the device. * @param pucData Pointer to a buffer that contains the data to be written. * @param dwDataLen Size, in bytes, of buffer that contains storage for the data to be read. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pucData as a pointer to an array of bytes of size * dwDataLen that contains the data to be written to the EEPROM user area. It is a programming * error for dwDataLen to be greater than the size of the EEPROM user area. The available user * area size can be determined by calling FT_EE_UASize. */ FTD2XX_API FT_STATUS WINAPI FT_EE_UAWrite( FT_HANDLE ftHandle, PUCHAR pucData, DWORD dwDataLen ); /** @noop FT_EEPROM_HEADER * @par Summary * Structure to hold data for FT_EEPROM_Program and FT_EEPROM_Read functions. * The structure for the command includes one FT_EEPROM_HEADER with a device-specific * structure appended. * @see FT_EEPROM_Read * @see FT_EEPROM_Program */ typedef struct ft_eeprom_header { FT_DEVICE deviceType; /// FTxxxx device type to be programmed /// Device descriptor options WORD VendorId; /// 0x0403 WORD ProductId; /// 0x6001 UCHAR SerNumEnable; /// non-zero if serial number to be used /// Config descriptor options WORD MaxPower; /// 0 < MaxPower <= 500 UCHAR SelfPowered; /// 0 = bus powered, 1 = self powered UCHAR RemoteWakeup; /// 0 = not capable, 1 = capable /// Hardware options UCHAR PullDownEnable; /// non-zero if pull down in suspend enabled } FT_EEPROM_HEADER, *PFT_EEPROM_HEADER; /** @noop FT_EEPROM_232B * @par Summary * Structure to hold data for the FT232B data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_232b { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs } FT_EEPROM_232B, *PFT_EEPROM_232B; /** @noop FT_EEPROM_2232 * @par Summary * Structure to hold data for the FT2232C, FT2232D and FT2232L data in the FT_EEPROM_Program * and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_2232 { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR AIsHighCurrent; /// non-zero if interface is high current UCHAR BIsHighCurrent; /// non-zero if interface is high current /// Hardware options UCHAR AIsFifo; /// non-zero if interface is 245 FIFO UCHAR AIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR AIsFastSer; /// non-zero if interface is Fast serial UCHAR BIsFifo; /// non-zero if interface is 245 FIFO UCHAR BIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR BIsFastSer; /// non-zero if interface is Fast serial /// Driver option UCHAR ADriverType; /// non-zero if interface is to use VCP drivers UCHAR BDriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_2232, *PFT_EEPROM_2232; /** @noop FT_EEPROM_232R * @par Summary * Structure to hold data for the FT232R data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_232r { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR IsHighCurrent; /// non-zero if interface is high current /// Hardware options UCHAR UseExtOsc; /// Use External Oscillator UCHAR InvertTXD; /// non-zero if invert TXD UCHAR InvertRXD; /// non-zero if invert RXD UCHAR InvertRTS; /// non-zero if invert RTS UCHAR InvertCTS; /// non-zero if invert CTS UCHAR InvertDTR; /// non-zero if invert DTR UCHAR InvertDSR; /// non-zero if invert DSR UCHAR InvertDCD; /// non-zero if invert DCD UCHAR InvertRI; /// non-zero if invert RI UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control /// Driver option UCHAR DriverType; /// non-zero if using D2XX driver } FT_EEPROM_232R, *PFT_EEPROM_232R; /** @noop FT_EEPROM_2232H * @par Summary * Structure to hold data for the FT2232H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_2232h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ALSlowSlew; /// non-zero if AL pins have slow slew UCHAR ALSchmittInput; /// non-zero if AL pins are Schmitt input UCHAR ALDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR AHSlowSlew; /// non-zero if AH pins have slow slew UCHAR AHSchmittInput; /// non-zero if AH pins are Schmitt input UCHAR AHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BLSlowSlew; /// non-zero if BL pins have slow slew UCHAR BLSchmittInput; /// non-zero if BL pins are Schmitt input UCHAR BLDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BHSlowSlew; /// non-zero if BH pins have slow slew UCHAR BHSchmittInput; /// non-zero if BH pins are Schmitt input UCHAR BHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// Hardware options UCHAR AIsFifo; /// non-zero if interface is 245 FIFO UCHAR AIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR AIsFastSer; /// non-zero if interface is Fast serial UCHAR BIsFifo; /// non-zero if interface is 245 FIFO UCHAR BIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR BIsFastSer; /// non-zero if interface is Fast serial UCHAR PowerSaveEnable; /// non-zero if using BCBUS7 to save power for self-powered designs /// Driver option UCHAR ADriverType; /// non-zero if interface is to use VCP drivers UCHAR BDriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_2232H, *PFT_EEPROM_2232H; /** @noop FT_EEPROM_4232H * @par Summary * Structure to hold data for the FT4232H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_4232h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ASlowSlew; /// non-zero if A pins have slow slew UCHAR ASchmittInput; /// non-zero if A pins are Schmitt input UCHAR ADriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BSlowSlew; /// non-zero if B pins have slow slew UCHAR BSchmittInput; /// non-zero if B pins are Schmitt input UCHAR BDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR CSlowSlew; /// non-zero if C pins have slow slew UCHAR CSchmittInput; /// non-zero if C pins are Schmitt input UCHAR CDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR DSlowSlew; /// non-zero if D pins have slow slew UCHAR DSchmittInput; /// non-zero if D pins are Schmitt input UCHAR DDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// Hardware options UCHAR ARIIsTXDEN; /// non-zero if port A uses RI as RS485 TXDEN UCHAR BRIIsTXDEN; /// non-zero if port B uses RI as RS485 TXDEN UCHAR CRIIsTXDEN; /// non-zero if port C uses RI as RS485 TXDEN UCHAR DRIIsTXDEN; /// non-zero if port D uses RI as RS485 TXDEN /// Driver option UCHAR ADriverType; /// non-zero if interface is to use VCP drivers UCHAR BDriverType; /// non-zero if interface is to use VCP drivers UCHAR CDriverType; /// non-zero if interface is to use VCP drivers UCHAR DDriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_4232H, *PFT_EEPROM_4232H; /** @noop FT_EEPROM_232H * @par Summary * Structure to hold data for the FT232H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_232h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ACSlowSlew; /// non-zero if AC bus pins have slow slew UCHAR ACSchmittInput; /// non-zero if AC bus pins are Schmitt input UCHAR ACDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ADSlowSlew; /// non-zero if AD bus pins have slow slew UCHAR ADSchmittInput; /// non-zero if AD bus pins are Schmitt input UCHAR ADDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// CBUS options UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control UCHAR Cbus5; /// Cbus Mux control UCHAR Cbus6; /// Cbus Mux control UCHAR Cbus7; /// Cbus Mux control UCHAR Cbus8; /// Cbus Mux control UCHAR Cbus9; /// Cbus Mux control /// FT1248 options UCHAR FT1248Cpol; /// FT1248 clock polarity - clock idle high (1) or clock idle low (0) UCHAR FT1248Lsb; /// FT1248 data is LSB (1) or MSB (0) UCHAR FT1248FlowControl; /// FT1248 flow control enable /// Hardware options UCHAR IsFifo; /// non-zero if interface is 245 FIFO UCHAR IsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR IsFastSer; /// non-zero if interface is Fast serial UCHAR IsFT1248; /// non-zero if interface is FT1248 UCHAR PowerSaveEnable; /// /// Driver option UCHAR DriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_232H, *PFT_EEPROM_232H; /** @noop FT_EEPROM_X_SERIES * @par Summary * Structure to hold data for the FT-X series data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_x_series { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ACSlowSlew; /// non-zero if AC bus pins have slow slew UCHAR ACSchmittInput; /// non-zero if AC bus pins are Schmitt input UCHAR ACDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ADSlowSlew; /// non-zero if AD bus pins have slow slew UCHAR ADSchmittInput; /// non-zero if AD bus pins are Schmitt input UCHAR ADDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// CBUS options UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control UCHAR Cbus5; /// Cbus Mux control UCHAR Cbus6; /// Cbus Mux control /// UART signal options UCHAR InvertTXD; /// non-zero if invert TXD UCHAR InvertRXD; /// non-zero if invert RXD UCHAR InvertRTS; /// non-zero if invert RTS UCHAR InvertCTS; /// non-zero if invert CTS UCHAR InvertDTR; /// non-zero if invert DTR UCHAR InvertDSR; /// non-zero if invert DSR UCHAR InvertDCD; /// non-zero if invert DCD UCHAR InvertRI; /// non-zero if invert RI /// Battery Charge Detect options UCHAR BCDEnable; /// Enable Battery Charger Detection UCHAR BCDForceCbusPWREN; /// asserts the power enable signal on CBUS when charging port detected UCHAR BCDDisableSleep; /// forces the device never to go into sleep mode /// I2C options WORD I2CSlaveAddress; /// I2C slave device address DWORD I2CDeviceId; /// I2C device ID UCHAR I2CDisableSchmitt; /// Disable I2C Schmitt trigger /// FT1248 options UCHAR FT1248Cpol; /// FT1248 clock polarity - clock idle high (1) or clock idle low (0) UCHAR FT1248Lsb; /// FT1248 data is LSB (1) or MSB (0) UCHAR FT1248FlowControl; /// FT1248 flow control enable /// Hardware options UCHAR RS485EchoSuppress; /// UCHAR PowerSaveEnable; /// /// Driver option UCHAR DriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_X_SERIES, *PFT_EEPROM_X_SERIES; /** @noop FT_EEPROM_4222H * @par Summary * Structure to hold data for the FT4222H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_4222h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs CHAR Revision; /// 'A', 'B', 'C', or 'D'. UCHAR I2C_Slave_Address; /// Suspend UCHAR SPISuspend; /// 0 for "Disable SPI, tristate pins", 2 for "Keep SPI pin status", 3 for "Enable SPI pin control" UCHAR SuspendOutPol; /// 0 for negative, 1 for positive (not implemented on Rev A) UCHAR EnableSuspendOut; /// non-zero to enable (not implemented on Rev A) /// QSPI UCHAR Clock_SlowSlew; /// non-zero if clock pin has slow slew UCHAR Clock_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR IO0_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR IO1_SlowSlew; /// non-zero if IO1 pin has slow slew UCHAR IO2_SlowSlew; /// non-zero if IO2 pin has slow slew UCHAR IO3_SlowSlew; /// non-zero if IO3 pin has slow slew UCHAR IO_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR SlaveSelect_PullUp; /// non-zero to enable pull up UCHAR SlaveSelect_PullDown; /// non-zero to enable pull down UCHAR SlaveSelect_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR SlaveSelect_SlowSlew; /// non-zero if slave select pin has slow slew UCHAR MISO_Suspend; /// 2 for push-low, 3 for push high, 0 and 1 reserved UCHAR SIMO_Suspend; /// 2 for push-low, 3 for push high, 0 and 1 reserved UCHAR IO2_IO3_Suspend; /// 2 for push-low, 3 for push high, 0 and 1 reserved UCHAR SlaveSelect_Suspend; /// 0 for no-change (not implemented on Rev A), 2 for push-low, 3 for push high, 1 reserved /// GPIO UCHAR GPIO0_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO1_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO2_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO3_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO0_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO1_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO2_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO3_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO0_PullDown; /// non-zero to enable pull down UCHAR GPIO1_PullDown; /// non-zero to enable pull down UCHAR GPIO2_PullDown; /// non-zero to enable pull down UCHAR GPIO3_PullDown; /// non-zero to enable pull down UCHAR GPIO0_PullUp; /// non-zero to enable pull up UCHAR GPIO1_PullUp; /// non-zero to enable pull up UCHAR GPIO2_PullUp; /// non-zero to enable pull up UCHAR GPIO3_PullUp; /// non-zero to enable pull up UCHAR GPIO0_OpenDrain; /// non-zero to enable open drain UCHAR GPIO1_OpenDrain; /// non-zero to enable open drain UCHAR GPIO2_OpenDrain; /// non-zero to enable open drain UCHAR GPIO3_OpenDrain; /// non-zero to enable open drain UCHAR GPIO0_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR GPIO1_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR GPIO2_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR GPIO3_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR FallingEdge; /// non-zero to change GPIO on falling edge /// BCD UCHAR BCD_Disable; /// non-zero to disable BCD UCHAR BCD_OutputActiveLow; /// non-zero to set BCD output active low UCHAR BCD_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA } FT_EEPROM_4222H, *PFT_EEPROM_4222H; /** @noop FT_EEPROM_PD_PDO_mv_ma * @par Summary * Structure to hold PDO Configuration structure, mA supported values 0 to 10230mA, mV supported * values 0 to 51100mV. This is part of the FT_EEPROM_PD structure. * @see FT_EEPROM_PD */ typedef struct ft_eeprom_PD_PDO_mv_ma { USHORT PDO1ma; /// PDO1 mA USHORT PDO1mv; /// PDO1 mV USHORT PDO2ma; /// PDO2 mA USHORT PDO2mv; /// PDO2 mV USHORT PDO3ma; /// PDO3 mA USHORT PDO3mv; /// PDO3 mV USHORT PDO4ma; /// PDO4 mA USHORT PDO4mv; /// PDO4 mV USHORT PDO5ma; /// PDO5 mA (FTx233HP only) USHORT PDO5mv; /// PDO5 mV (FTx233HP only) USHORT PDO6ma; /// PDO6 mA (FTx233HP only) USHORT PDO6mv; /// PDO6 mV (FTx233HP only) USHORT PDO7ma; /// PDO7 mA (FTx233HP only) USHORT PDO7mv; /// PDO7 mV (FTx233HP only) } FT_EEPROM_PD_PDO_mv_ma; /** @noop FT_EEPROM_PD * @par Summary * Structure to hold power delivery configuration data for the FT4233PD, FT2233PD, FT4232PD, * FT2232PD, FT233PD and FT232PD in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER and a base device structure. * e_g. @verbatim * struct { * FT_EEPROM_xxx base; * FT_EEPROM_PD pd; * }; * @endverbatim * @remarks * Device GPIO values are: * @li FTx233HP - 0 to 7, 15 for N/A * @li FTx232HP - 0 to 3, 15 for N/A * @see FT_EEPROM_HEADER * @see FT_EEPROM_PD_PDO_mv_ma */ typedef struct ft_eeprom_pd { /// Configuration UCHAR srprs; /// non-zero to enable Sink Request Power Role Swap UCHAR sraprs; /// non-zero to enable Sink Accept PR Swap UCHAR srrprs; /// non-zero to enable Source Request PR SWAP UCHAR saprs; /// non-zero to enable Source Accept PR SWAP UCHAR vconns; /// non-zero to enable vConn Swap UCHAR passthru; /// non-zero to enable Pass Through (FTx233HP only) UCHAR extmcu; /// non-zero to enable External MCU UCHAR pd2en; /// non-zero to enable PD2 (FTx233HP only) UCHAR pd1autoclk; /// non-zero to enable PD1 Auto Clock UCHAR pd2autoclk; /// non-zero to enable PD2 Auto Clock (FTx233HP only) UCHAR useefuse; /// non-zero to Use EFUSE UCHAR extvconn; /// non-zero to enable External vConn /// GPIO Configuration UCHAR count; /// GPIO Count, supported values are 0 to 7 UCHAR gpio1; /// GPIO Number 1, supports device GPIO values UCHAR gpio2; /// GPIO Number 2, supports device GPIO values UCHAR gpio3; /// GPIO Number 3, supports device GPIO values UCHAR gpio4; /// GPIO Number 4, supports device GPIO values UCHAR gpio5; /// GPIO Number 5, supports device GPIO values (FTx233HP only) UCHAR gpio6; /// GPIO Number 6, supports device GPIO values (FTx233HP only) UCHAR gpio7; /// GPIO Number 7, supports device GPIO values (FTx233HP only) UCHAR pd1lden; /// PD1 Load Enable, supports device GPIO values UCHAR pd2lden; /// PD2 Load Enable, supports device GPIO values (FTx233HP only) UCHAR dispin; /// Discharge Pin, supports device GPIO values UCHAR disenbm; /// Discharge Enable BM, 0 for "Drive Hi", 1 for "Drive Low", 2 for "Input Mode", 3 for "Don't Care" UCHAR disdisbm; /// Discharge Disable BM, 0 for "Drive Hi", 1 for "Drive Low", 2 for "Input Mode", 3 for "Don't Care" UCHAR ccselect; /// CC Select Indicator, supports device GPIO values /// ISET Configuration UCHAR iset1; /// ISET1, supports device GPIO values UCHAR iset2; /// ISET2, supports device GPIO values UCHAR iset3; /// ISET3, supports device GPIO values UCHAR extiset; /// non-zero to enable EXTEND_ISET UCHAR isetpd2; /// non-zero to enable ISET_PD2 UCHAR iseten; /// non-zero to set ISET_ENABLED /// BM Configuration, 0 for "Drive Hi", 1 for "Drive Low", 2 for "Input Mode", 3 for "Don't Care" UCHAR PDO1_GPIO[7]; /// PDO1 GPIO1 to GPIO7 UCHAR PDO2_GPIO[7]; /// PDO2 GPIO1 to GPIO7 UCHAR PDO3_GPIO[7]; /// PDO3 GPIO1 to GPIO7 UCHAR PDO4_GPIO[7]; /// PDO4 GPIO1 to GPIO7 UCHAR PDO5_GPIO[7]; /// PDO5 GPIO1 to GPIO7 (FTx233HP only) UCHAR PDO6_GPIO[7]; /// PDO6 GPIO1 to GPIO7 (FTx233HP only) UCHAR PDO7_GPIO[7]; /// PDO7 GPIO1 to GPIO7 (FTx233HP only) UCHAR VSET0V_GPIO[7]; /// PDO7 GPIO1 to GPIO7 UCHAR VSAFE5V_GPIO[7]; /// PDO7 GPIO1 to GPIO7 FT_EEPROM_PD_PDO_mv_ma BM_PDO_Sink; FT_EEPROM_PD_PDO_mv_ma BM_PDO_Source; FT_EEPROM_PD_PDO_mv_ma BM_PDO_Sink_2; // (FTx233HP only) /// PD Timers UCHAR srt; /// Sender Response Timer UCHAR hrt; /// Hard Reset Timer UCHAR sct; /// Source Capability Timer UCHAR dit; /// Discover Identity Timer USHORT srcrt; /// Source Recover Timer USHORT trt; /// Transition Timer USHORT sofft; /// Source off timer USHORT nrt; /// No Response Timer USHORT swct; /// Sink Wait Capability Timer USHORT snkrt; /// Sink Request Timer UCHAR dt; /// Discharge Timer UCHAR cnst; /// Chunk not supported timer USHORT it; /// Idle Timer /// PD Control UCHAR i2caddr; /// I2C Address (hex) UINT prou; /// Power Reserved for OWN use UINT trim1; /// TRIM1 UINT trim2; /// TRIM2 UCHAR extdc; /// non-zero to enable ETERNAL_DC_POWER } FT_EEPROM_PD, *PFT_EEPROM_PD; /// FT2233HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT2232H with power delivery typedef struct _ft_eeprom_2233hp { FT_EEPROM_2232H ft2232h; FT_EEPROM_PD pd; } FT_EEPROM_2233HP, *PFT_EEPROM_2233HP; /// FT4233HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT4232H with power delivery typedef struct _ft_eeprom_4233hp { FT_EEPROM_4232H ft4232h; FT_EEPROM_PD pd; } FT_EEPROM_4233HP, *PFT_EEPROM_4233HP; /// FT2232HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT2232H with power delivery typedef struct _ft_eeprom_2232hp { FT_EEPROM_2232H ft2232h; FT_EEPROM_PD pd; } FT_EEPROM_2232HP, *PFT_EEPROM_2232HP; /// FT4232HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT4232H with power delivery typedef struct _ft_eeprom_4232hp { FT_EEPROM_4232H ft4232h; FT_EEPROM_PD pd; } FT_EEPROM_4232HP, *PFT_EEPROM_4232HP; /// FT233HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT233H with power delivery typedef struct _ft_eeprom_233hp { FT_EEPROM_232H ft232h; FT_EEPROM_PD pd; } FT_EEPROM_233HP, *PFT_EEPROM_233HP; /// FT232HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT232H with power delivery typedef struct _ft_eeprom_232hp { FT_EEPROM_232H ft232h; FT_EEPROM_PD pd; } FT_EEPROM_232HP, *PFT_EEPROM_232HP; /** @noop FT_EEPROM_Read * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (XP and later) * @par Summary * Read data from the EEPROM, this command will work for all existing FTDI chipset, and must be * used for the FT-X series. * @param ftHandle Handle of the device. * @param *eepromData Pointer to a buffer that contains the data to be read. * Note: This structure is different for each device type. * @param eepromDataSize Size of the eepromData buffer that contains storage for the data to be read. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter *eepromDATA as a pointer to a structure matching the device * type being accessed e.g. * @li PFT_EEPROM_232B is the structure for FT2xxB devices. * @li PFT_EEPROM_2232 is the structure for FT2232D devices. * @li PFT_EEPROM_232R is the structure for FT232R devices. * @li PFT_EEPROM_2232H is the structure for FT2232H devices. * @li PFT_EEPROM_4232H is the structure for FT4232H devices. * @li PFT_EEPROM_232H is the structure for FT232H devices. * @li PFT_EEPROM_X_SERIES is the structure for FT2xxX devices. * * The function does not perform any checks on buffer sizes, so the buffers passed in the eepromDATA * structure must be big enough to accommodate their respective strings (including null terminators). * The sizes shown in the following example are more than adequate and can be rounded down if necessary. * The restriction is that the Manufacturer string length plus the Description string length is less than or * equal to 40 characters. * @note Note that the DLL must be informed which version of the eepromDATA structure is being used. This is * done through the PFT_EEPROM_HEADER structure. The first element of this structure is deviceType and * may be FT_DEVICE_BM, FT_DEVICE_AM, FT_DEVICE_2232C, FT_DEVICE_232R, FT_DEVICE_2232H, * FT_DEVICE_4232H, FT_DEVICE_232H, or FT_DEVICE_X_SERIES as defined in FTD2XX.h. */ FTD2XX_API FT_STATUS WINAPI FT_EEPROM_Read( FT_HANDLE ftHandle, void *eepromData, DWORD eepromDataSize, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @noop FT_EEPROM_Program * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (XP and later) * @par Summary * Write data into the EEPROM, this command will work for all existing FTDI chipset, and must be used for * the FT-X series. * @param ftHandle Handle of the device. * @param *eepromData Pointer to a buffer that contains the data to be written. * Note: This structure is different for each device type. * @param eepromDataSize Size of the eepromData buffer that contains storage for the data to be written. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter *eepromDATA as a pointer to a structure matching the device * type being accessed e.g. * @li PFT_EEPROM_232B is the structure for FT2xxB devices. * @li PFT_EEPROM_2232 is the structure for FT2232D devices. * @li PFT_EEPROM_232R is the structure for FT232R devices. * @li PFT_EEPROM_2232H is the structure for FT2232H devices. * @li PFT_EEPROM_4232H is the structure for FT4232H devices. * @li PFT_EEPROM_232H is the structure for FT232H devices. * @li PFT_EEPROM_X_SERIES is the structure for FT2xxX devices. * * The function does not perform any checks on buffer sizes, so the buffers passed in the eepromDATA * structure must be big enough to accommodate their respective strings (including null terminators). * @n The sizes shown in the following example are more than adequate and can be rounded down if necessary. * The restriction is that the Manufacturer string length plus the Description string length is less than or * equal to 40 characters. * @note Note that the DLL must be informed which version of the eepromDATA structure is being used. This is * done through the PFT_EEPROM_HEADER structure. The first element of this structure is deviceType and * may be FT_DEVICE_BM, FT_DEVICE_AM, FT_DEVICE_2232C, FT_DEVICE_232R, FT_DEVICE_2232H, * FT_DEVICE_4232H, FT_DEVICE_232H, or FT_DEVICE_X_SERIES as defined in FTD2XX.h. */ FTD2XX_API FT_STATUS WINAPI FT_EEPROM_Program( FT_HANDLE ftHandle, void *eepromData, DWORD eepromDataSize, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @} */ /** @name Extended API Functions * The extended API functions do not apply to FT8U232AM or FT8U245AM devices. FTDI’s other USB-UART * and USB-FIFO ICs (the FT2232H, FT4232H, FT232R, FT245R, FT2232, FT232B and FT245B) do support * these functions. Note that there is device dependence in some of these functions. */ /** @{ */ /** @noop FT_SetLatencyTimer * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Set the latency timer value. * @param ftHandle Handle of the device. * @param ucLatency Required value, in milliseconds, of latency timer. Valid range is 2 - 255. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * In the FT8U232AM and FT8U245AM devices, the receive buffer timeout that is used to flush remaining * data from the receive buffer was fixed at 16 ms. In all other FTDI devices, this timeout is * programmable and can be set at 1 ms intervals between 2ms and 255 ms. This allows the device to * be better optimize for protocols requiring faster response times from short data packets. */ FTD2XX_API FT_STATUS WINAPI FT_SetLatencyTimer( FT_HANDLE ftHandle, UCHAR ucLatency ); /** @noop FT_GetLatencyTimer * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Get the current value of the latency timer. * @param ftHandle Handle of the device. * @param pucLatency Pointer to unsigned char to store latency timer value. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * In the FT8U232AM and FT8U245AM devices, the receive buffer timeout that is used to flush remaining * data from the receive buffer was fixed at 16 ms. In all other FTDI devices, this timeout is * programmable and can be set at 1 ms intervals between 2ms and 255 ms. This allows the device to * be better optimized for protocols requiring faster response times from short data packets. */ FTD2XX_API FT_STATUS WINAPI FT_GetLatencyTimer( FT_HANDLE ftHandle, PUCHAR pucLatency ); /** @noop FT_SetBitMode * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Enables different chip modes. * @param ftHandle Handle of the device. * @param ucMask Required value for bit mode mask. This sets up which bits are inputs and outputs. * A bit value of 0 sets the corresponding pin to an input, a bit value of 1 sets the corresponding * pin to an output. * @n In the case of CBUS Bit Bang, the upper nibble of this value controls which pins are inputs * and outputs, while the lower nibble controls which of the outputs are high and low. * @param ucEnable Mode value. Can be one of the following: * @li 0x0 = Reset * @li 0x1 = Asynchronous Bit Bang * @li 0x2 = MPSSE (FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x4 = Synchronous Bit Bang (FT232R, FT245R, FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x8 = MCU Host Bus Emulation Mode (FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x10 = Fast Opto-Isolated Serial Mode (FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x20 = CBUS Bit Bang Mode (FT232R and FT232H devices only) * @li 0x40 = Single Channel Synchronous 245 FIFO Mode (FT2232H and FT232H devices only) * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * For a description of available bit modes for the FT232R, see the application note "Bit Bang Modes * for the FT232R and FT245R". * @n For a description of available bit modes for the FT2232, see the application note "Bit Mode * Functions for the FT2232". * @n For a description of Bit Bang Mode for the FT232B and FT245B, see the application note * "FT232B/FT245B Bit Bang Mode". * @n Application notes are available for download from the FTDI website. * Note that to use CBUS Bit Bang for the FT232R, the CBUS must be configured for CBUS Bit Bang in the * EEPROM. * @note Note that to use Single Channel Synchronous 245 FIFO mode for the FT2232H, channel A must be * configured for FT245 FIFO mode in the EEPROM. */ FTD2XX_API FT_STATUS WINAPI FT_SetBitMode( FT_HANDLE ftHandle, UCHAR ucMask, UCHAR ucEnable ); /** @noop FT_GetBitMode * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the instantaneous value of the data bus. * @param ftHandle Handle of the device. * @param pucMode Pointer to unsigned char to store the instantaneous data bus value. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * For a description of available bit modes for the FT232R, see the application note "Bit Bang Modes * for the FT232R and FT245R". * @n For a description of available bit modes for the FT2232, see the application note "Bit Mode * Functions for the FT2232". * @n For a description of bit bang modes for the FT232B and FT245B, see the application note * "FT232B/FT245B Bit Bang Mode". * @n For a description of bit modes supported by the FT4232H and FT2232H devices, please see the * IC data sheets. * @n These application notes are available for download from the FTDI website. */ FTD2XX_API FT_STATUS WINAPI FT_GetBitMode( FT_HANDLE ftHandle, PUCHAR pucMode ); /** @noop FT_SetUSBParameters * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Set the USB request transfer size. * @param ftHandle Handle of the device. * @param ulInTransferSize Transfer size for USB IN request. * @param ulOutTransferSize Transfer size for USB OUT request. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function can be used to change the transfer sizes from the default transfer size of 4096 * bytes to better suit the application requirements. Transfer sizes must be set to a multiple * of 64 bytes between 64 bytes and 64k bytes. * @n When FT_SetUSBParameters is called, the change comes into effect immediately and any data * that was held in the driver at the time of the change is lost. * @note Note that, at present, only ulInTransferSize is supported. */ FTD2XX_API FT_STATUS WINAPI FT_SetUSBParameters( FT_HANDLE ftHandle, ULONG ulInTransferSize, ULONG ulOutTransferSize ); /** @} */ /** @name FT-Win32 API Functions * The functions in this section are supplied to ease porting from a Win32 serial port application. These * functions are supported under non-Windows platforms to assist with porting existing applications from * Windows. Note that classic D2XX functions and the Win32 D2XX functions should not be mixed unless * stated. */ /** @{ */ /** @noop FT_W32_CreateFile * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Opens the specified device and return a handle which will be used for subsequent accesses. * The device can be specified by its serial number, device description, or location. * @n This function must be used if overlapped I/O is required. * @param lpszName Meaning depends on the value of dwAttrsAndFlags. Can be a pointer to a null * terminated string that contains the description or serial number of the device, or can be * the location of the device. These values can be obtained from the FT_CreateDeviceInfoList, * FT_GetDeviceInfoDetail or FT_ListDevices functions. * @param dwAccess Type of access to the device. Access can be GENERIC_READ, * GENERIC_WRITE or both. Ignored in Linux. * @param dwShareMode How the device is shared. This value must be set to 0. * @param lpSecurityAttributes This parameter has no effect and should be set to NULL. * @param dwCreate This parameter must be set to OPEN_EXISTING. Ignored in Linux. * @param dwAttrsAndFlags File attributes and flags. This parameter is a combination of * FILE_ATTRIBUTE_NORMAL, FILE_FLAG_OVERLAPPED if overlapped I/O is used, * FT_OPEN_BY_SERIAL_NUMBER if lpszName is the device’s serial number, and * FT_OPEN_BY_DESCRIPTION if lpszName is the device’s description. * @param hTemplate This parameter must be NULL. * @returns * If the function is successful, the return value is a handle. * If the function is unsuccessful, the return value is the Win32 error code INVALID_HANDLE_VALUE. * @remarks * The meaning of lpszName depends on dwAttrsAndFlags: if FT_OPEN_BY_SERIAL_NUMBER or * FT_OPEN_BY_DESCRIPTION is set in dwAttrsAndFlags, lpszName contains a pointer to a null terminated * string that contains the device's serial number or description; if FT_OPEN_BY_LOCATION is set in * dwAttrsAndFlags, lpszName is interpreted as a value of type long that contains the location ID of * the device. dwAccess can be GENERIC_READ, GENERIC_WRITE or both; dwShareMode must be set to 0; * lpSecurityAttributes must be set to NULL; dwCreate must be set to OPEN_EXISTING; dwAttrsAndFlags * is a combination of FILE_ATTRIBUTE_NORMAL, FILE_FLAG_OVERLAPPED if overlapped I/O is used, * FT_OPEN_BY_SERIAL_NUMBER or FT_OPEN_BY_DESCRIPTION or FT_OPEN_BY_LOCATION; hTemplate * must be NULL. * @note Note that Linux, Mac OS X and Windows CE do not support overlapped IO. Windows CE * does not support location IDs. */ FTD2XX_API FT_HANDLE WINAPI FT_W32_CreateFile( LPCTSTR lpszName, DWORD dwAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreate, DWORD dwAttrsAndFlags, HANDLE hTemplate ); /** @noop FT_W32_CloseHandle * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Close the specified device handle. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_CloseHandle( FT_HANDLE ftHandle ); /** @noop FT_W32_ReadFile * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read data from the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to a buffer that receives the data from the device. * @param nBufferSize Number of bytes to read from the device. * @param lpdwBytesReturned Pointer to a variable that receives the number of bytes read from * the device. * @param lpOverlapped Pointer to an overlapped structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function supports both non-overlapped and overlapped I/O, except under Linux, Mac OS X * and Windows CE where only non-overlapped IO is supported. * @n @b Non-overlapped @b I/O * @n The parameter, lpOverlapped, must be NULL for non-overlapped I/O. * @n This function always returns the number of bytes read in lpdwBytesReturned. * This function does not return until dwBytesToRead have been read into the buffer. The number of * bytes in the receive queue can be determined by calling FT_GetStatus or FT_GetQueueStatus, and * passed as dwBytesToRead so that the function reads the device and returns immediately. * @n When a read timeout has been setup in a previous call to FT_W32_SetCommTimeouts, this function * returns when the timer expires or dwBytesToRead have been read, whichever occurs first. If a * timeout occurred, any available data is read into lpBuffer and the function returns a non-zero value. * @n An application should use the function return value and lpdwBytesReturned when processing the * buffer. If the return value is non-zero and lpdwBytesReturned is equal to dwBytesToRead then the * function has completed normally. If the return value is non-zero and lpdwBytesReturned is less * then dwBytesToRead then a timeout has occurred, and the read request has been partially completed. * @note Note that if a timeout occurred and no data was read, the return value is still non-zero. * @n @b Overlapped @b I/O * @n When the device has been opened for overlapped I/O, an application can issue a request and * perform some additional work while the request is pending. This contrasts with the case * of non-overlapped I/O in which the application issues a request and receives control again only * after the request has been completed. * @n The parameter, lpOverlapped, must point to an initialized OVERLAPPED structure. If there is * enough data in the receive queue to satisfy the request, the request completes immediately and * the return code is non-zero. The number of bytes read is returned in lpdwBytesReturned. * @n If there is not enough data in the receive queue to satisfy the request, the request completes * immediately, and the return code is zero, signifying an error. An application should call * FT_W32_GetLastError to get the cause of the error. If the error code is ERROR_IO_PENDING, the * overlapped operation is still in progress, and the application can perform other processing. * Eventually, the application checks the result of the overlapped request by calling * FT_W32_GetOverlappedResult. * @n If successful, the number of bytes read is returned in lpdwBytesReturned. */ FTD2XX_API BOOL WINAPI FT_W32_ReadFile( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD nBufferSize, LPDWORD lpdwBytesReturned, LPOVERLAPPED lpOverlapped ); /** @noop FT_W32_WriteFile * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write data to the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to the buffer that contains the data to write to the device. * @param nBufferSize Number of bytes to be written to the device. * @param lpdwBytesWritten Pointer to a variable that receives the number of bytes written to the device. * @param lpOverlapped Pointer to an overlapped structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function supports both non-overlapped and overlapped I/O, except under Linux, Mac OS X and * Windows CE where only non-overlapped IO is supported. * @n @b Non-overlapped @b I/O * @n The parameter, lpOverlapped, must be NULL for non-overlapped I/O. * @n This function always returns the number of bytes written in lpdwBytesWritten. * This function does not return until dwBytesToWrite have been written to the device. * When a write timeout has been setup in a previous call to FT_W32_SetCommTimeouts, this function * returns when the timer expires or dwBytesToWrite have been written, whichever occurs first. If a * timeout occurred, lpdwBytesWritten contains the number of bytes actually written, and the function * returns a non-zero value. * @n An application should always use the function return value and lpdwBytesWritten. If the return * value is non-zero and lpdwBytesWritten is equal to dwBytesToWrite then the function has completed * normally. If the return value is non-zero and lpdwBytesWritten is less then dwBytesToWrite then a * timeout has occurred, and the write request has been partially completed. * @note Note that if a timeout occurred and no data was written, the return value is still non-zero. * @n @b Overlapped @b I/O * @n When the device has been opened for overlapped I/O, an application can issue a request and perform * some additional work while the request is pending. This contrasts with the case of non-overlapped * I/O in which the application issues a request and receives control again only after the request has * been completed. * @n The parameter, lpOverlapped, must point to an initialized OVERLAPPED structure. * This function completes immediately, and the return code is zero, signifying an error. An application * should call FT_W32_GetLastError to get the cause of the error. If the error code is ERROR_IO_PENDING, * the overlapped operation is still in progress, and the application can perform other processing. * Eventually, the application checks the result of the overlapped request by calling * FT_W32_GetOverlappedResult. * @n If successful, the number of bytes written is returned in lpdwBytesWritten. */ FTD2XX_API BOOL WINAPI FT_W32_WriteFile( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD nBufferSize, LPDWORD lpdwBytesWritten, LPOVERLAPPED lpOverlapped ); /** @noop FT_W32_GetOverlappedResult * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the result of an overlapped operation. * @param ftHandle Handle of the device. * @param lpOverlapped Pointer to an overlapped structure. * @param lpdwBytesTransferred Pointer to a variable that receives the number of bytes transferred * during the overlapped operation. * @param bWait Set to TRUE if the function does not return until the operation has been completed. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function is used with overlapped I/O and so is not supported in Linux, Mac OS X or Windows CE. For * a description of its use, see FT_W32_ReadFile and FT_W32_WriteFile. */ FTD2XX_API BOOL WINAPI FT_W32_GetOverlappedResult( FT_HANDLE ftHandle, LPOVERLAPPED lpOverlapped, LPDWORD lpdwBytesTransferred, BOOL bWait ); /** @noop FT_W32_EscapeCommFunction * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Perform an extended function. * @param ftHandle Handle of the device. * @param dwFunc The extended function to perform can be one of the following values: * @li CLRDTR - Clear the DTR signal * @li CLRRTS - Clear the RTS signal * @li SETDTR - Set the DTR signal * @li SETRTS - Set the RTS signal * @li SETBREAK - Set the BREAK condition * @li CLRBREAK - Clear the BREAK condition * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_EscapeCommFunction( FT_HANDLE ftHandle, DWORD dwFunc ); /** @noop FT_W32_GetCommModemStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function gets the current modem control value. * @param ftHandle Handle of the device. * @param lpdwModemStatus Pointer to a variable to contain modem control value. The modem * control value can be a combination of the following: * @li MS_CTS_ON - Clear To Send (CTS) is on * @li MS_DSR_ON - Data Set Ready (DSR) is on * @li MS_RING_ON - Ring Indicator (RI) is on * @li MS_RLSD_ON - Receive Line Signal Detect (RLSD) is on * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommModemStatus( FT_HANDLE ftHandle, LPDWORD lpdwModemStatus ); /** @noop FT_W32_SetupComm * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the read and write buffers. * @param ftHandle Handle of the device. * @param dwReadBufferSize Length, in bytes, of the read buffer. * @param dwWriteBufferSize Length, in bytes, of the write buffer. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function has no effect. It is the responsibility of the driver to allocate sufficient * storage for I/O requests. */ FTD2XX_API BOOL WINAPI FT_W32_SetupComm( FT_HANDLE ftHandle, DWORD dwReadBufferSize, DWORD dwWriteBufferSize ); /** * Structure for FT_W32_ClearCommError lpftComstat parameter. * @see FT_W32_ClearCommError */ typedef struct _FTCOMSTAT { DWORD fCtsHold : 1; DWORD fDsrHold : 1; DWORD fRlsdHold : 1; DWORD fXoffHold : 1; DWORD fXoffSent : 1; DWORD fEof : 1; DWORD fTxim : 1; DWORD fReserved : 25; DWORD cbInQue; DWORD cbOutQue; } FTCOMSTAT, *LPFTCOMSTAT; /** Structure for FT_W32_SetCommState and FT_W32_GetCommState lpftDcb parameter. * @see FT_W32_SetCommState * @see FT_W32_GetCommState */ typedef struct _FTDCB { DWORD DCBlength; /** sizeof(FTDCB) */ DWORD BaudRate; /** Baudrate at which running */ DWORD fBinary : 1; /** Binary Mode (skip EOF check) */ DWORD fParity : 1; /** Enable parity checking */ DWORD fOutxCtsFlow : 1; /** CTS handshaking on output */ DWORD fOutxDsrFlow : 1; /** DSR handshaking on output */ DWORD fDtrControl : 2; /** DTR Flow control */ DWORD fDsrSensitivity : 1; /** DSR Sensitivity */ DWORD fTXContinueOnXoff : 1; /** Continue TX when Xoff sent */ DWORD fOutX : 1; /** Enable output X-ON/X-OFF */ DWORD fInX : 1; /** Enable input X-ON/X-OFF */ DWORD fErrorChar : 1; /** Enable Err Replacement */ DWORD fNull : 1; /** Enable Null stripping */ DWORD fRtsControl : 2; /** Rts Flow control */ DWORD fAbortOnError : 1; /** Abort all reads and writes on Error */ DWORD fDummy2 : 17; /** Reserved */ WORD wReserved; /** Not currently used */ WORD XonLim; /** Transmit X-ON threshold */ WORD XoffLim; /** Transmit X-OFF threshold */ BYTE ByteSize; /** Number of bits/byte, 4-8 */ BYTE Parity; /** 0-4=None,Odd,Even,Mark,Space */ BYTE StopBits; /** FT_STOP_BITS_1 or FT_STOP_BITS_2 */ char XonChar; /** Tx and Rx X-ON character */ char XoffChar; /** Tx and Rx X-OFF character */ char ErrorChar; /** Error replacement char */ char EofChar; /** End of Input character */ char EvtChar; /** Received Event character */ WORD wReserved1; /** Fill for now. */ } FTDCB, *LPFTDCB; /** Structure for FT_W32_SetCommTimeouts and FT_W32_GetCommTimeouts lpftTimeouts parameter. * @see FT_W32_SetCommTimeouts * @see FT_W32_GetCommTimeouts */ typedef struct _FTTIMEOUTS { DWORD ReadIntervalTimeout; /** Maximum time between read chars. */ DWORD ReadTotalTimeoutMultiplier; /** Multiplier of characters. */ DWORD ReadTotalTimeoutConstant; /** Constant in milliseconds. */ DWORD WriteTotalTimeoutMultiplier; /** Multiplier of characters. */ DWORD WriteTotalTimeoutConstant; /** Constant in milliseconds. */ } FTTIMEOUTS, *LPFTTIMEOUTS; /** @noop FT_W32_SetCommState * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the state of the device according to the contents of a device control block (DCB). * @param ftHandle Handle of the device. * @param lpftDcb Pointer to an FTDCB structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommState( FT_HANDLE ftHandle, LPFTDCB lpftDcb ); /** @noop FT_W32_GetCommState * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function gets the current device state. * @param ftHandle Handle of the device. * @param lpftDcb Pointer to an FTDCB structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * The current state of the device is returned in a device control block. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommState( FT_HANDLE ftHandle, LPFTDCB lpftDcb ); /** @noop FT_W32_SetCommTimeouts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the timeout parameters for I/O requests. * @param ftHandle Handle of the device. * @param pftTimeouts Pointer to an FTTIMEOUTS structure to store timeout information. * @returns * If the function is unsuccessful, the return value is zero. * @remarks * Timeouts are calculated using the information in the FTTIMEOUTS structure. * @n For read requests, the number of bytes to be read is multiplied by the total timeout * multiplier, and added to the total timeout constant. So, if TS is an FTTIMEOUTS structure * and the number of bytes to read is dwToRead, the read timeout, rdTO, is calculated as follows. * @n rdTO = (dwToRead * TS.ReadTotalTimeoutMultiplier) + TS.ReadTotalTimeoutConstant * @n For write requests, the number of bytes to be written is multiplied by the total timeout * multiplier, and added to the total timeout constant. So, if TS is an FTTIMEOUTS structure * and the number of bytes to write is dwToWrite, the write timeout, wrTO, is calculated as follows. * @n wrTO = (dwToWrite * TS.WriteTotalTimeoutMultiplier) + TS.WriteTotalTimeoutConstant * @n Linux and Mac OS X currently ignore the ReadIntervalTimeout, ReadTotalTimeoutMultiplier and * WriteTotalTimeoutMultiplier. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommTimeouts( FT_HANDLE ftHandle, FTTIMEOUTS *pftTimeouts ); /** @noop FT_W32_GetCommTimeouts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function gets the current read and write request timeout parameters for the specified device. * @param ftHandle Handle of the device. * @param pftTimeouts Pointer to an FTTIMEOUTS structure to store timeout information. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * For an explanation of how timeouts are used, see FT_W32_SetCommTimeouts. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommTimeouts( FT_HANDLE ftHandle, FTTIMEOUTS *pftTimeouts ); /** @noop FT_W32_SetCommBreak * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Puts the communications line in the BREAK state. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommBreak( FT_HANDLE ftHandle ); /** @noop FT_W32_ClearCommBreak * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Puts the communications line in the non-BREAK state. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_ClearCommBreak( FT_HANDLE ftHandle ); /** @noop FT_W32_SetCommMask * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function specifies events that the device has to monitor. * @param ftHandle Handle of the device. * @param ulEventMask Mask containing events that the device has to monitor. This can be a combination of * the following: * @li EV_BREAK - BREAK condition detected * @li EV_CTS - Change in Clear To Send (CTS) * @li EV_DSR - Change in Data Set Ready (DSR) * @li EV_ERR - Error in line status * @li EV_RING - Change in Ring Indicator (RI) * @li EV_RLSD - Change in Receive Line Signal Detect (RLSD) * @li EV_RXCHAR - Character received * @li EV_RXFLAG - Event character received * @li EV_TXEMPTY - Transmitter empty * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function specifies the events that the device should monitor. An application can call the * function FT_W32_WaitCommEvent to wait for an event to occur. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommMask( FT_HANDLE ftHandle, ULONG ulEventMask ); /** @noop 6 FT_W32_GetCommMask * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Retrieves the events that are currently being monitored by a device. * @param ftHandle Handle of the device. * @param lpdwEventMask Pointer to a location that receives a mask that contains the events that are * currently enabled. This parameter can be one or more of the following values: * @li EV_BREAK - BREAK condition detected * @li EV_CTS - Change in Clear To Send (CTS) * @li EV_DSR - Change in Data Set Ready (DSR) * @li EV_ERR - Error in line status * @li EV_RING - Change in Ring Indicator (RI) * @li EV_RLSD - Change in Receive Line Signal Detect (RLSD) * @li EV_RXCHAR - Character received * @li EV_RXFLAG - Event character received * @li EV_TXEMPTY - Transmitter empty * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function returns events currently being monitored by the device. Event monitoring for these * events is enabled by the FT_W32_SetCommMask function. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommMask( FT_HANDLE ftHandle, LPDWORD lpdwEventMask ); /** @noop FT_W32_WaitCommEvent * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function waits for an event to occur. * @param ftHandle Handle of the device. * @param pulEvent Pointer to a location that receives a mask that contains the events that occurred. * @param lpOverlapped Pointer to an overlapped structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function supports both non-overlapped and overlapped I/O, except under Windows CE and Linux * where only non-overlapped IO is supported. * @n @b Non-overlapped @b I/O * The parameter, lpOverlapped, must be NULL for non-overlapped I/O. * @n This function does not return until an event that has been specified in a call to * FT_W32_SetCommMask has occurred. The events that occurred and resulted in this function returning * are stored in lpdwEvent. * @n @b Overlapped @b I/O * @n When the device has been opened for overlapped I/O, an application can issue a request and perform * some additional work while the request is pending. This contrasts with the case of non-overlapped * I/O in which the application issues a request and receives control again only after the request has * been completed. * @n The parameter, lpOverlapped, must point to an initialized OVERLAPPED structure. * This function does not return until an event that has been specified in a call to FT_W32_SetCommMask * has occurred. * @n If an event has already occurred, the request completes immediately, and the return code is non-zero. * @n The events that occurred are stored in lpdwEvent. * @n If an event has not yet occurred, the request completes immediately, and the return code is zero, * signifying an error. An application should call FT_W32_GetLastError to get the cause of the error. If * the error code is ERROR_IO_PENDING, the overlapped operation is still in progress, and the application * can perform other processing. Eventually, the application checks the result of the overlapped request * by calling FT_W32_GetOverlappedResult. The events that occurred and resulted in this function * returning are stored in lpdwEvent. */ FTD2XX_API BOOL WINAPI FT_W32_WaitCommEvent( FT_HANDLE ftHandle, PULONG pulEvent, LPOVERLAPPED lpOverlapped ); /** @noop FT_W32_PurgeComm * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function purges the device. * @param ftHandle Handle of the device. * @param dwMask Specifies the action to take. The action can be a combination of the following: * @li PURGE_TXABORT - Terminate outstanding overlapped writes * @li PURGE_RXABORT - Terminate outstanding overlapped reads * @li PURGE_TXCLEAR - Clear the transmit buffer * @li PURGE_RXCLEAR - Clear the receive buffer * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_PurgeComm( FT_HANDLE ftHandle, DWORD dwMask ); /** @noop FT_W32_GetLastError * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the last error that occurred on the device. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function is normally used with overlapped I/O and so is not supported in Windows CE. For a * description of its use, see FT_W32_ReadFile and FT_W32_WriteFile. * @n In Linux and Mac OS X, this function returns a DWORD that directly maps to the FT Errors (for * example the FT_INVALID_HANDLE error number). */ FTD2XX_API DWORD WINAPI FT_W32_GetLastError( FT_HANDLE ftHandle ); /** @noop FT_W32_ClearCommError * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets information about a communications error and get current status of the device. * @param ftHandle Handle of the device. * @param lpdwErrors Variable that contains the error mask. * @param lpftComstat Pointer to FTCOMSTAT structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_ClearCommError( FT_HANDLE ftHandle, LPDWORD lpdwErrors, LPFTCOMSTAT lpftComstat ); /** @noop FT_W32_CancelIo * Undocumented function. */ FTD2XX_API BOOL WINAPI FT_W32_CancelIo( FT_HANDLE ftHandle ); /** @} */ /** * @name FT232H Additional EEPROM Functions */ /** @{ */ /** @noop FT_EE_ReadConfig * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_EE_ReadConfig( FT_HANDLE ftHandle, UCHAR ucAddress, PUCHAR pucValue ); /** @noop FT_EE_WriteConfig * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_EE_WriteConfig( FT_HANDLE ftHandle, UCHAR ucAddress, UCHAR ucValue ); /** @noop FT_EE_ReadECC * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_EE_ReadECC( FT_HANDLE ftHandle, UCHAR ucOption, LPWORD lpwValue ); /** @noop FT_GetQueueStatusEx * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_GetQueueStatusEx( FT_HANDLE ftHandle, DWORD *dwRxBytes ); /** @noop FT_ComPortIdle * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_ComPortIdle( FT_HANDLE ftHandle ); /** @noop FT_ComPortCancelIdle * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_ComPortCancelIdle( FT_HANDLE ftHandle ); /** @noop FT_VendorCmdGet * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdGet( FT_HANDLE ftHandle, UCHAR Request, UCHAR *Buf, USHORT Len ); /** @noop FT_VendorCmdSet * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdSet( FT_HANDLE ftHandle, UCHAR Request, UCHAR *Buf, USHORT Len ); /** @noop FT_VendorCmdGetEx * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdGetEx( FT_HANDLE ftHandle, USHORT wValue, UCHAR *Buf, USHORT Len ); /** @noop FT_VendorCmdSetEx * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdSetEx( FT_HANDLE ftHandle, USHORT wValue, UCHAR *Buf, USHORT Len ); /** @} */ #ifdef __cplusplus } #endif #endif /* FTD2XX_H */ release/ReadMe.txt0000644000000000000000000001404014261506412013072 0ustar rootrootD2XX for Linux -------------- As Linux distributions vary these instructions are a guide to installation and use. FTDI has tested the driver with LTS Ubuntu distributions for x86 and x86_64 architectures, and Raspbian on Raspberry Pi. FTDI developed libftd2xx primarily to aid porting Windows applications written with D2XX to Linux. We intend the APIs to behave the same on Windows and Linux so if you notice any differences, please contact us (see http://www.ftdichip.com/FTSupport.htm). FTDI do not release the source code for libftd2xx. If you prefer to work with source code and are starting a project from scratch, consider using the open-source libFTDI. libftd2xx uses an unmodified version of libusb (http://libusb.info) which is distributed under the terms of the GNU Lesser General Public License (see libusb/COPYING or http://www.gnu.org/licenses). Source code for libusb is included in this distribution. Installing the D2XX shared library and static library. ------------------------------------------------------ 1. tar xfvz libftd2xx-mips-openwrt-uclibc-1.4.27.tgz This unpacks the archive, creating the following directory structure: build libftd2xx (re-linkable objects) libusb (re-linkable objects) libftd2xx.a (static library) libftd2xx.so.1.4.27 (dynamic library) libftd2xx.txt (platform-specific information) examples libusb (source code) ftd2xx.h WinTypes.h 2. cd build 3. sudo -s or, if sudo is not available on your system: su Promotes you to super-user, with installation privileges. If you're already root, then step 3 (and step 7) is not necessary. 4. cp libftd2xx.* /usr/local/lib Copies the libraries to a central location. 5. chmod 0755 /usr/local/lib/libftd2xx.so.1.4.27 Allows non-root access to the shared object. 6. ln -sf /usr/local/lib/libftd2xx.so.1.4.27 /usr/local/lib/libftd2xx.so Creates a symbolic link to the 1.4.27 version of the shared object. 7. cd .. cp ftd2xx.h /usr/local/include cp WinTypes.h /usr/local/include Copies the header files to a central location. 8. ldconfig -v Update the linker shared object cache to include the newly installed library. 9. exit Ends your super-user session. Notes on Kernel Built-in Support of FTDI devices. ------------------------------------------------- On most distributions, the linux kernel will have either a built-in or optional module called "ftdi_sio". This will detect an FTDI device and automatically invoke the "usbserial" module and create devices such as "/dev/ttyUSB0". When the ftdi_sio module is controlling an FTDI device it is not available to libftd2xx. If the library attempts to access the device it will receive a message "FT_Open failed". There are several methods of preventing ftdi_sio from controlling FTDI devices. 1) Remove the ftdi_sio module from the running kernel: sudo lsmod | grep ftdi_sio If "ftdi_sio" is listed unload it (and its helper module, usbserial): sudo rmmod ftdi_sio sudo rmmod usbserial To reverse the operation the kernel modules can be reloaded using modprobe instead of rmmod. 2) Build a new kernel without the ftdi_sio module. Refer to your distributions instructions for building a custom kernel. 3) Use a udev unbind sysfs interface to disable devices as they are connected. First identify the device identifier to remove. ls /sys/bus/usb/drivers/ftdi_sio This will show a list of ports on USB devices that are linked to the ftdi_sio driver. These are in the form 1-2:1.0 (bus number 1 - port number 2 : device 1 . interface 0) for Port A, and 1-2:1.1 would be Port B on the same device. The /dev/ttyUSBx node can be mapped to the device identifier using: lsusb -t The devices will be listed in a tree format which can be mapped to the device identifiers. Identify the device which you wish to use and then send the identifier of the device to the "unbind" interface in the driver. (The tee function just echos stdin to stdout with privilege escalation through sudo). echo -n 1-2:1.1 | sudo tee /sys/bus/usb/drivers/ftdi_sio/unbind To reverse the process the same device number can be sent to the "bind" interface to re-enable the USB serial device. This can be scripted through udev rules to happen when a device connection change is detected. Adding Your Device's Vendor and Product Identifiers --------------------------------------------------- If your FTDI device has a Vendor ID (VID) or Product ID (PID) that differs from the standard devices then you can call FT_SetVIDPID before calling the FT_Open, FT_OpenEx, FT_ListDevices or FT_CreateDeviceInfoList functions. Modified VID and PIDs can also be added to the list of devices which invoke ftdi_sio by sending the VID and PID of the device to the "new_id" interface. The VID and PID can be found with lsusb. echo -n 0403 1001 | sudo tee /sys/bus/usb-serial/drivers/ftdi_sio/new_id This can either be done after the device is installed or can be done before the device is inserted if an appropriate modprobe command is performed. Building the shared-object examples. ------------------------------------ 1. cd examples 2. make -B This builds all the shared-object examples in subdirectories. With an FTDI device connected to a USB port, try one of the examples, e.g. reading EEPROM. 3. cd EEPROM/read 4. sudo ./read Building the static-library example. ------------------------------------ 1. cd examples/static 2. rm lib* Cleans out any existing libraries built for another target. 3. cp /usr/local/lib/libftd2xx.a . 4. make -B 5. sudo ./static_link This example demonstrates writing to, and reading from, a device with a loop-back connector attached. The examples show how to call a small subset of the D2XX API. The full API is available here: http://www.ftdichip.com/Support/Documents/ProgramGuides/D2XX_Programmer%27s_Guide(FT_000071).pdf release/examples/0000775000000000000000000000000014261476163013026 5ustar rootrootrelease/examples/write/0000775000000000000000000000000014261476161014156 5ustar rootrootrelease/examples/write/main.c0000664000000000000000000001260614261476161015253 0ustar rootroot/* Test app to send data to a terminal monitoring a second serial port. To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o timeouts main.c -L. -lftd2xx -Wl,-rpath /usr/local/lib */ #include #include #include "../ftd2xx.h" #define ARRAY_SIZE(x) sizeof((x))/sizeof((x)[0]) /* Test data which is easy to check visually */ static char testPattern[] = "\n" "0123456789ABCDEF================FEDCBA9876543210\n" "1DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD1\n" "2DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD2\n" "3DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD3\n" "4DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD4\n" "5DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD5\n" "6DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD6\n" "7DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD7\n" "================0DDDDDDDDDDDDDD0================\n" "================1DDDDDDDDDDDDDD1================\n" "================2DDDDDDDDDDDDDD2================\n" "================3DDDDDDDDDDDDDD3================\n" "================4DDDDDDDDDDDDDD4================\n" "================5DDDDDDDDDDDDDD5================\n" "================6DDDDDDDDDDDDDD6================\n" "================7DDDDDDDDDDDDDD7================\n" "7DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD7\n" "6DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD6\n" "5DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD5\n" "4DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD4\n" "3DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD3\n" "2DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD2\n" "1DDDDDDDDDDDDDDD================DDDDDDDDDDDDDDD1\n" "0123456789ABCDEF================FEDCBA9876543210\n" "\n"; int main(int argc, char *argv[]) { int retCode = -1; // Assume failure int f = 0; FT_STATUS ftStatus = FT_OK; FT_HANDLE ftHandle = NULL; int portNum = -1; // Deliberately invalid DWORD bytesToWrite = 0; DWORD bytesWritten = 0; int inputRate = -1; // Entered on command line int baudRate = -1; // Rate to actually use int rates[] = {50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 576000, 921600}; if (argc > 1) { sscanf(argv[1], "%d", &portNum); } if (portNum < 0) { // Missing, or invalid. Just use first port. portNum = 0; } if (portNum > 16) { // User probably specified a baud rate without a port number printf("Syntax: %s [port number] [baud rate]\n", argv[0]); portNum = 0; } if (argc > 2) { sscanf(argv[2], "%d", &inputRate); for (f = 0; f < (int)(ARRAY_SIZE(rates)); f++) { if (inputRate == rates[f]) { // User entered a rate we support, so we'll use it. baudRate = inputRate; break; } } } if (baudRate < 0) baudRate = 9600; printf("Trying FTDI device %d at %d baud.\n", portNum, baudRate); ftStatus = FT_Open(portNum, &ftHandle); if (ftStatus != FT_OK) { printf("FT_Open(%d) failed, with error %d.\n", portNum, (int)ftStatus); printf("Use lsmod to check if ftdi_sio (and usbserial) are present.\n"); printf("If so, unload them using rmmod, as they conflict with ftd2xx.\n"); goto exit; } assert(ftHandle != NULL); ftStatus = FT_ResetDevice(ftHandle); if (ftStatus != FT_OK) { printf("Failure. FT_ResetDevice returned %d.\n", (int)ftStatus); goto exit; } ftStatus = FT_SetBaudRate(ftHandle, (ULONG)baudRate); if (ftStatus != FT_OK) { printf("Failure. FT_SetBaudRate(%d) returned %d.\n", baudRate, (int)ftStatus); goto exit; } ftStatus = FT_SetDataCharacteristics(ftHandle, FT_BITS_8, FT_STOP_BITS_1, FT_PARITY_NONE); if (ftStatus != FT_OK) { printf("Failure. FT_SetDataCharacteristics returned %d.\n", (int)ftStatus); goto exit; } // Indicate our presence to remote computer ftStatus = FT_SetDtr(ftHandle); if (ftStatus != FT_OK) { printf("Failure. FT_SetDtr returned %d.\n", (int)ftStatus); goto exit; } // Flow control is needed for higher baud rates ftStatus = FT_SetFlowControl(ftHandle, FT_FLOW_RTS_CTS, 0, 0); if (ftStatus != FT_OK) { printf("Failure. FT_SetFlowControl returned %d.\n", (int)ftStatus); goto exit; } // Assert Request-To-Send to prepare remote computer ftStatus = FT_SetRts(ftHandle); if (ftStatus != FT_OK) { printf("Failure. FT_SetRts returned %d.\n", (int)ftStatus); goto exit; } ftStatus = FT_SetTimeouts(ftHandle, 3000, 3000); // 3 seconds if (ftStatus != FT_OK) { printf("Failure. FT_SetTimeouts returned %d\n", (int)ftStatus); goto exit; } bytesToWrite = (DWORD)(sizeof(testPattern) - 1); // Don't write string terminator ftStatus = FT_Write(ftHandle, testPattern, bytesToWrite, &bytesWritten); if (ftStatus != FT_OK) { printf("Failure. FT_Write returned %d\n", (int)ftStatus); goto exit; } if (bytesWritten != bytesToWrite) { printf("Failure. FT_Write wrote %d bytes instead of %d.\n", (int)bytesWritten, (int)bytesToWrite); goto exit; } // Success retCode = 0; printf("Successfully wrote %d bytes\n", (int)bytesWritten); exit: if (ftHandle != NULL) FT_Close(ftHandle); return retCode; } release/examples/write/Makefile0000664000000000000000000000025014261476161015613 0ustar rootrootTOPDIR := $(shell cd ..; pwd) include $(TOPDIR)/Rules.make APP = write all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/LargeRead/0000775000000000000000000000000014261476161014652 5ustar rootrootrelease/examples/LargeRead/main.c0000664000000000000000000000267314261476161015752 0ustar rootroot/* Simple example to read a large amount of data from a BM device. Device must have bitbang capabilities to enable this to work To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o largeread main.c -L. -lftd2xx -Wl,-rpath /usr/local/lib */ #include #include #include "../ftd2xx.h" #define BUF_SIZE 0x100000 // 1 Megabyte int main(int argc, char *argv[]) { char * pcBufRead; DWORD dwBytesRead; FILE * fh; FT_HANDLE ftHandle; FT_STATUS ftStatus; int iport; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } fh = fopen("target.bin", "wb+"); if(fh == NULL) { printf("Cant open source file\n"); return 1; } ftStatus = FT_Open(iport, &ftHandle); if(ftStatus != FT_OK) { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } pcBufRead = (char *)malloc(BUF_SIZE); FT_ResetDevice(ftHandle); FT_SetBaudRate(ftHandle, 115200); FT_SetDtr(ftHandle); FT_SetRts(ftHandle); FT_SetFlowControl(ftHandle, FT_FLOW_RTS_CTS, 0, 0); FT_SetTimeouts(ftHandle, 0, 0); // infinite timeouts FT_SetBitMode(ftHandle, 0xFF, 0x01); FT_Read(ftHandle, pcBufRead, BUF_SIZE, &dwBytesRead); fwrite(pcBufRead, 1, dwBytesRead, fh); fclose(fh); free(pcBufRead); FT_Close(ftHandle); return 0; } release/examples/LargeRead/Makefile0000664000000000000000000000027214261476161016313 0ustar rootrootTOPDIR := $(shell cd ..; pwd) include $(TOPDIR)/Rules.make APP = largeread all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/WinTypes.h0000775000000000000000000001231114261476163014762 0ustar rootroot#ifndef __WINDOWS_TYPES__ #define __WINDOWS_TYPES__ #define WINAPI typedef unsigned int DWORD; typedef unsigned int ULONG; typedef unsigned short USHORT; typedef unsigned short SHORT; typedef unsigned char UCHAR; typedef unsigned short WORD; typedef unsigned short WCHAR; typedef unsigned char BYTE; typedef BYTE *LPBYTE; typedef unsigned int BOOL; typedef unsigned char BOOLEAN; typedef unsigned char CHAR; typedef BOOL *LPBOOL; typedef UCHAR *PUCHAR; typedef const char *LPCSTR; typedef char *PCHAR; typedef void *PVOID; typedef void *HANDLE; typedef unsigned int LONG; typedef int INT; typedef unsigned int UINT; typedef char *LPSTR; typedef char *LPTSTR; typedef const char *LPCTSTR; typedef DWORD *LPDWORD; typedef WORD *LPWORD; typedef ULONG *PULONG; typedef LONG *LPLONG; typedef PVOID LPVOID; typedef void VOID; typedef USHORT *PUSHORT; typedef unsigned long long int ULONGLONG; typedef struct _OVERLAPPED { DWORD Internal; DWORD InternalHigh; union { struct{ DWORD Offset; DWORD OffsetHigh; }; PVOID Pointer; }; HANDLE hEvent; } OVERLAPPED, *LPOVERLAPPED; typedef struct _SECURITY_ATTRIBUTES { DWORD nLength; LPVOID lpSecurityDescriptor; BOOL bInheritHandle; } SECURITY_ATTRIBUTES , *LPSECURITY_ATTRIBUTES; #include // Substitute for HANDLE returned by Windows CreateEvent API. // FT_SetEventNotification expects parameter 3 to be the address // of one of these structures. typedef struct _EVENT_HANDLE { pthread_cond_t eCondVar; pthread_mutex_t eMutex; int iVar; } EVENT_HANDLE; typedef struct timeval SYSTEMTIME; typedef struct timeval FILETIME; // WaitForSingleObject return values. #define WAIT_ABANDONED 0x00000080L #define WAIT_OBJECT_0 0x00000000L #define WAIT_TIMEOUT 0x00000102L #define WAIT_FAILED 0xFFFFFFFF // Special value for WaitForSingleObject dwMilliseconds parameter #define INFINITE 0xFFFFFFFF // Infinite timeout #ifndef TRUE #define TRUE 1 #endif #ifndef FALSE #define FALSE 0 #endif #ifndef CONST #define CONST const #endif // // Modem Status Flags // #define MS_CTS_ON ((DWORD)0x0010) #define MS_DSR_ON ((DWORD)0x0020) #define MS_RING_ON ((DWORD)0x0040) #define MS_RLSD_ON ((DWORD)0x0080) // // Error Flags // #define CE_RXOVER 0x0001 // Receive Queue overflow #define CE_OVERRUN 0x0002 // Receive Overrun Error #define CE_RXPARITY 0x0004 // Receive Parity Error #define CE_FRAME 0x0008 // Receive Framing error #define CE_BREAK 0x0010 // Break Detected #define CE_TXFULL 0x0100 // TX Queue is full #define CE_PTO 0x0200 // LPTx Timeout #define CE_IOE 0x0400 // LPTx I/O Error #define CE_DNS 0x0800 // LPTx Device not selected #define CE_OOP 0x1000 // LPTx Out-Of-Paper #define CE_MODE 0x8000 // Requested mode unsupported // // Events // #define EV_RXCHAR 0x0001 // Any Character received #define EV_RXFLAG 0x0002 // Received certain character #define EV_TXEMPTY 0x0004 // Transmit Queue Empty #define EV_CTS 0x0008 // CTS changed state #define EV_DSR 0x0010 // DSR changed state #define EV_RLSD 0x0020 // RLSD changed state #define EV_BREAK 0x0040 // BREAK received #define EV_ERR 0x0080 // Line status error occurred #define EV_RING 0x0100 // Ring signal detected #define EV_PERR 0x0200 // Printer error occured #define EV_RX80FULL 0x0400 // Receive buffer is 80 percent full #define EV_EVENT1 0x0800 // Provider specific event 1 #define EV_EVENT2 0x1000 // Provider specific event 2 // // Escape Functions // #define SETXOFF 1 // Simulate XOFF received #define SETXON 2 // Simulate XON received #define SETRTS 3 // Set RTS high #define CLRRTS 4 // Set RTS low #define SETDTR 5 // Set DTR high #define CLRDTR 6 // Set DTR low #define RESETDEV 7 // Reset device if possible #define SETBREAK 8 // Set the device break line. #define CLRBREAK 9 // Clear the device break line. // // PURGE function flags. // #define PURGE_TXABORT 0x0001 // Kill the pending/current writes to the comm port. #define PURGE_RXABORT 0x0002 // Kill the pending/current reads to the comm port. #define PURGE_TXCLEAR 0x0004 // Kill the transmit queue if there. #define PURGE_RXCLEAR 0x0008 // Kill the typeahead buffer if there. #ifndef INVALID_HANDLE_VALUE #define INVALID_HANDLE_VALUE 0xFFFFFFFF #endif #endif /* __WINDOWS_TYPES__ */ release/examples/SetVIDPID/0000775000000000000000000000000014261476161014457 5ustar rootrootrelease/examples/SetVIDPID/main.c0000664000000000000000000000575714261476161015565 0ustar rootroot/* From version 1.4 onwards, libftd2xx easily supports devices with custom Vendor and Product Ids. Call FT_SetVIDPID for every VID+PID that you wish your D2XX application to support. There is no longer any need to call FT_GetVIDPID, and the deprecated LibTable method no longer works. To build: 1. Install libftd2xx.so in the /usr/local/lib directory. 2. gcc -o setVIDPID main.c -lftd2xx -lpthread -lrt -Wl,-rpath,/usr/local/lib */ #include #include #include #include "../ftd2xx.h" #ifndef _countof #define _countof(a) (sizeof(a)/sizeof(*(a))) #endif /* _countof */ int main (void) { FT_STATUS ftStatus; size_t i; int retCode = EXIT_FAILURE; DWORD libVersion = 0; DWORD standardDevices = 0; DWORD totalDevices = 0; /* Specify as many VID+PID pairs as you wish to support. */ DWORD vid[] = {0x0403, 0x7654, 0x7777, 0xdcba, 0x5a5a}; DWORD pid[] = {0x4242, 0x1234, 0xabcd, 0xa5a5, 0xdcba}; (void)FT_GetLibraryVersion(&libVersion); printf("D2XX version %08X\n", (unsigned int)libVersion); if (libVersion < 0x00010400) { printf("This version of D2XX does not correctly support " "multiple calls to FT_SetVIDPID.\n"); goto exit; } /* Initially, FT_ListDevices, FT_Open and FT_CreateDeviceInfoList * only consider devices with standard FTDI Vendor and Product Ids. */ ftStatus = FT_ListDevices(&standardDevices, NULL, FT_LIST_NUMBER_ONLY); if (ftStatus != FT_OK) { printf("FT_ListDevices failed: error code %d.\n", (int)ftStatus); goto exit; } printf( "%d device%s with standard FTDI Vendor and Product Ids detected.\n", (int)standardDevices, standardDevices == 1 ? "" : "s" ); /* Tell D2XX about our additional VID+PID combinations. */ assert(_countof(vid) == _countof(pid)); for (i = 0; i < _countof(vid); i++) { ftStatus = FT_SetVIDPID(vid[i], pid[i]); if (ftStatus != FT_OK) { printf("FT_SetVIDPID failed: error code %d.\n", (int)ftStatus); goto exit; } } /* Now FT_ListDevices, FT_Open and FT_CreateDeviceInfoList will * consider devices with our custom Vendor and Product Ids, as * well as the standard FTDI Vendor and Product Ids. */ ftStatus = FT_ListDevices(&totalDevices, NULL, FT_LIST_NUMBER_ONLY); if (ftStatus != FT_OK) { printf("FT_ListDevices failed: error code %d.\n", (int)ftStatus); goto exit; } printf( "%d supported device%s detected: %d standard, %d custom.\n", (int)totalDevices, totalDevices == 1 ? "" : "s", (int)standardDevices, (int)(totalDevices - standardDevices) ); retCode = EXIT_SUCCESS; exit: return retCode; } release/examples/SetVIDPID/Makefile0000664000000000000000000000027214261476161016120 0ustar rootrootTOPDIR := $(shell cd ..; pwd) include $(TOPDIR)/Rules.make APP = setVIDPID all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/Simple/0000775000000000000000000000000014261476161014255 5ustar rootrootrelease/examples/Simple/main.c0000664000000000000000000001236714261476161015356 0ustar rootroot/* Simple example to open a maximum of 4 devices - write some data then read it back. Shows one method of using list devices also. Assumes the devices have a loopback connector on them and they also have a serial number To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o simple main.c -L. -lftd2xx -Wl,-rpath /usr/local/lib */ #include #include #include #include #include #include "../ftd2xx.h" #define BUF_SIZE 0x10 #define MAX_DEVICES 5 static void dumpBuffer(unsigned char *buffer, int elements) { int j; printf(" ["); for (j = 0; j < elements; j++) { if (j > 0) printf(", "); printf("0x%02X", (unsigned int)buffer[j]); } printf("]\n"); } int main() { unsigned char cBufWrite[BUF_SIZE]; unsigned char * pcBufRead = NULL; char * pcBufLD[MAX_DEVICES + 1]; char cBufLD[MAX_DEVICES][64]; DWORD dwRxSize = 0; DWORD dwBytesWritten, dwBytesRead; FT_STATUS ftStatus; FT_HANDLE ftHandle[MAX_DEVICES]; int iNumDevs = 0; int i, j; int iDevicesOpen = 0; int queueChecks = 0; long int timeout = 5; // seconds struct timeval startTime; for(i = 0; i < MAX_DEVICES; i++) { pcBufLD[i] = cBufLD[i]; } pcBufLD[MAX_DEVICES] = NULL; memset(cBufLD, 0, sizeof(cBufLD)); ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus != FT_OK) { printf("Error: FT_ListDevices(%d)\n", (int)ftStatus); return 1; } for(i = 0; ( (i timeout) { // We've waited too long. Give up. printf("\nTimed out after %ld seconds\n", elapsed.tv_sec); break; } // Display number of bytes D2XX has received printf("%s%d", queueChecks == 0 ? "Number of bytes in D2XX receive-queue: " : ", ", (int)dwRxSize); } ftStatus = FT_GetQueueStatus(ftHandle[i], &dwRxSize); if (ftStatus != FT_OK) { printf("\nFT_GetQueueStatus failed (%d).\n", (int)ftStatus); } } printf("\nGot %d (of %d) bytes.\n", (int)dwRxSize, (int)dwBytesWritten); if(ftStatus == FT_OK) { pcBufRead = realloc(pcBufRead, dwRxSize); memset(pcBufRead, 0xFF, dwRxSize); printf("Calling FT_Read with this read-buffer:\n"); dumpBuffer(pcBufRead, dwRxSize); ftStatus = FT_Read(ftHandle[i], pcBufRead, dwRxSize, &dwBytesRead); if (ftStatus != FT_OK) { printf("Error FT_Read(%d)\n", (int)ftStatus); break; } if (dwBytesRead != dwRxSize) { printf("FT_Read only read %d (of %d) bytes\n", (int)dwBytesRead, (int)dwRxSize); break; } printf("FT_Read read %d bytes. Read-buffer is now:\n", (int)dwBytesRead); dumpBuffer(pcBufRead, (int)dwBytesRead); if (0 != memcmp(cBufWrite, pcBufRead, BUF_SIZE)) { printf("Error: read-buffer does not match write-buffer.\n"); break; } printf("%s test passed.\n", cBufLD[i]); } else { printf("Error FT_GetQueueStatus(%d)\n", (int)ftStatus); } } iDevicesOpen = i; /* Cleanup */ for(i = 0; i < iDevicesOpen; i++) { FT_Close(ftHandle[i]); printf("Closed device %s\n", cBufLD[i]); } if(pcBufRead) free(pcBufRead); return 0; } release/examples/Simple/Makefile0000664000000000000000000000144714261476161015723 0ustar rootroot#TOPDIR := $(shell cd ..; pwd) #include $(TOPDIR)/Rules.make DEPENDENCIES := -lpthread UNAME := $(shell uname) # Assume target is Mac OS if build host is Mac OS; any other host targets Linux ifeq ($(UNAME), Darwin) DEPENDENCIES += -lobjc -framework IOKit -framework CoreFoundation else DEPENDENCIES += -lrt endif CFLAGS = -Wall -Wextra DYNAMIC_LINK_OPTIONS := -Wl,-rpath /usr/local/lib APP = simple STATIC_APP = $(APP)-static DYNAMIC_APP = $(APP)-dynamic all: $(APP)-static $(APP)-dynamic $(STATIC_APP): main.c $(CC) main.c -o $(STATIC_APP) ../../build/libftd2xx.a $(CFLAGS) $(DEPENDENCIES) $(DYNAMIC_APP): main.c $(CC) main.c -o $(DYNAMIC_APP) $(CFLAGS) -lftd2xx $(DEPENDENCIES) $(DYNAMIC_LINK_OPTIONS) clean: -rm -f *.o ; rm $(STATIC_APP); rm $(DYNAMIC_APP) release/examples/loopback/0000775000000000000000000000000014261476161014616 5ustar rootrootrelease/examples/loopback/main.c0000664000000000000000000002451414261476161015714 0ustar rootroot/* * Writes a known sequence of bytes then expects to read them back. * Run this with a loopback device fitted to one of FTDI's USB-RS232 * converter cables. * A loopback device has: * 1. Receive Data connected to Transmit Data * 2. Data Set Ready connected to Data Terminal Ready * 3. Ready To Send connected to Clear To Send * * Build with: * gcc main.c -o loopback -Wall -Wextra * -lftd2xx -lpthread -lrt * -Wl,-rpath /usr/local/lib * * Run with: * sudo ./loopback */ #include #include #include #include #include "../ftd2xx.h" #define UNUSED_PARAMETER(x) (void)(x) #define ARRAY_SIZE(x) (sizeof((x))/sizeof((x)[0])) #ifdef _WIN32 /* Windows doesn't have gettimeofday but winsock.h does have a * definition of timeval: * * struct timeval * { * long tv_sec; * long tv_usec; * }; */ static int gettimeofday(struct timeval *tv, void *timezone) { SYSTEMTIME st; UNUSED_PARAMETER(timezone); GetSystemTime(&st); tv->tv_sec = (long)( (st.wHour * 60 * 60) + (st.wMinute * 60) + (st.wSecond)); tv->tv_usec = 0; // We're not using microseconds here. return 0; } static void timersub(struct timeval *a, struct timeval *b, struct timeval *res) { res->tv_sec = a->tv_sec - b->tv_sec; res->tv_usec = 0; } #else #include #endif // _WIN32 static void dumpBuffer(unsigned char *buffer, int elements) { int j; for (j = 0; j < elements; j++) { if (j % 8 == 0) { if (j % 16 == 0) printf("\n%p: ", &buffer[j]); else printf(" "); // Separate two columns of eight bytes } printf("%02X ", (unsigned int)buffer[j]); } printf("\n\n"); } int main(int argc, char *argv[]) { int retCode = -1; // Assume failure int f = 0; DWORD driverVersion = 0; FT_STATUS ftStatus = FT_OK; FT_HANDLE ftHandle = NULL; int portNum = 0; // First device found size_t bufferSize = 64 * 1024; DWORD bytesToWrite; DWORD bytesWritten = 0; DWORD bytesReceived = 0; DWORD bytesRead = 0; struct timeval startTime; int journeyDuration; unsigned char *writeBuffer = NULL; unsigned char *readBuffer = NULL; int queueChecks = 0; ULONG rates[] = {300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 576000, 921600, 1500000, 2000000, 3000000}; // TODO: detect high-speed device and use 8240000 UNUSED_PARAMETER(argc); UNUSED_PARAMETER(argv); // Make printfs immediate (no buffer) setvbuf(stdout, NULL, _IONBF, 0); writeBuffer = (unsigned char *)malloc((size_t)bufferSize); if (writeBuffer == NULL) goto exit; // Fill write buffer with consecutive values for (f = 0; f < (int)bufferSize; f++) { writeBuffer[f] = (unsigned char)f + 64; } printf("Opening FTDI device %d.\n", portNum); ftStatus = FT_Open(portNum, &ftHandle); if (ftStatus != FT_OK) { printf("FT_Open(%d) failed, with error %d.\n", portNum, (int)ftStatus); printf("On Linux, lsmod can check if ftdi_sio (and usbserial) are present.\n"); printf("If so, unload them using rmmod, as they conflict with ftd2xx.\n"); goto exit; } assert(ftHandle != NULL); ftStatus = FT_GetDriverVersion(ftHandle, &driverVersion); if (ftStatus != FT_OK) { printf("Failure. FT_GetDriverVersion returned %d.\n", (int)ftStatus); goto exit; } printf("Using D2XX version %08x\n", driverVersion); ftStatus = FT_ResetDevice(ftHandle); if (ftStatus != FT_OK) { printf("Failure. FT_ResetDevice returned %d.\n", (int)ftStatus); goto exit; } // Flow control is needed for higher baud rates ftStatus = FT_SetFlowControl(ftHandle, FT_FLOW_RTS_CTS, 0, 0); if (ftStatus != FT_OK) { printf("Failure. FT_SetFlowControl returned %d.\n", (int)ftStatus); goto exit; } ftStatus = FT_SetDataCharacteristics(ftHandle, FT_BITS_8, FT_STOP_BITS_1, FT_PARITY_NONE); if (ftStatus != FT_OK) { printf("Failure. FT_SetDataCharacteristics returned %d.\n", (int)ftStatus); goto exit; } for (f = 0; f < (int)ARRAY_SIZE(rates); f++) { ftStatus = FT_SetBaudRate(ftHandle, rates[f]); if (ftStatus != FT_OK) { printf("Failure. FT_SetBaudRate(%d) returned %d.\n", (int)rates[f], (int)ftStatus); goto exit; } // Assert Request-To-Send to prepare receiver ftStatus = FT_SetRts(ftHandle); if (ftStatus != FT_OK) { printf("Failure. FT_SetRts returned %d.\n", (int)ftStatus); goto exit; } if (rates[f] < 57600) { // Keep test duration reasonable by transferring fewer // bytes at low baud rates. bytesToWrite = rates[f] / 4; } else { bytesToWrite = bufferSize; } printf("\nBaud rate %d. Writing %d bytes to loopback device...\n", (int)rates[f], (int)bytesToWrite); ftStatus = FT_Write(ftHandle, writeBuffer, bytesToWrite, &bytesWritten); if (ftStatus != FT_OK) { printf("Failure. FT_Write returned %d\n", (int)ftStatus); goto exit; } if (bytesWritten != bytesToWrite) { printf("Failure. FT_Write wrote %d bytes instead of %d.\n", (int)bytesWritten, (int)bytesToWrite); goto exit; } printf("%d bytes written.\n", (int)bytesWritten); // Keep checking queue until D2XX has received all the bytes we wrote. // Estimate total time to write and read, so we can time-out. // Each byte has 8 data bits plus a stop bit and perhaps a 1-bit gap. journeyDuration = bytesWritten * (8 + 1 + 1) / (int)rates[f]; journeyDuration += 1; // Round up journeyDuration *= 2; // It's a return journey printf("Estimate %d seconds remain.\n", journeyDuration); gettimeofday(&startTime, NULL); for (bytesReceived = 0, queueChecks = 0; bytesReceived < bytesWritten; queueChecks++) { // Periodically check for time-out if (queueChecks % 32 == 0) { struct timeval now; struct timeval elapsed; gettimeofday(&now, NULL); timersub(&now, &startTime, &elapsed); if (elapsed.tv_sec > (long int)journeyDuration) { // We've waited too long. Give up. printf("\nTimed out after %ld seconds\n", elapsed.tv_sec); break; } // Display number of bytes D2XX has received printf("%s%d", queueChecks == 0 ? "Number of bytes in D2XX receive-queue: " : ", ", (int)bytesReceived); } ftStatus = FT_GetQueueStatus(ftHandle, &bytesReceived); if (ftStatus != FT_OK) { printf("\nFailure. FT_GetQueueStatus returned %d.\n", (int)ftStatus); goto exit; } } printf("\nGot %d (of %d) bytes.\n", (int)bytesReceived, (int)bytesWritten); // Even if D2XX has the wrong number of bytes, create our // own buffer so we can read and display them. free(readBuffer); // Free previous iteration's buffer. readBuffer = (unsigned char *)calloc(bytesReceived, sizeof(unsigned char)); if (readBuffer == NULL) { printf("Failed to allocate %d bytes.\n", bytesReceived); goto exit; } // Then copy D2XX's buffer to ours. ftStatus = FT_Read(ftHandle, readBuffer, bytesReceived, &bytesRead); if (ftStatus != FT_OK) { printf("Failure. FT_Read returned %d.\n", (int)ftStatus); goto exit; } if (bytesRead != bytesReceived) { printf("Failure. FT_Read only read %d (of %d) bytes.\n", (int)bytesRead, (int)bytesReceived); goto exit; } if (0 != memcmp(writeBuffer, readBuffer, bytesRead)) { printf("Failure. Read-buffer does not match write-buffer.\n"); printf("Write buffer:\n"); dumpBuffer(writeBuffer, bytesReceived); printf("Read buffer:\n"); dumpBuffer(readBuffer, bytesReceived); goto exit; } // Fail if D2XX's queue lacked (or had surplus) bytes. if (bytesReceived != bytesWritten) { printf("Failure. D2XX received %d bytes but we expected %d.\n", (int)bytesReceived, (int)bytesWritten); dumpBuffer(readBuffer, bytesReceived); goto exit; } // Check that queue hasn't gathered any additional unexpected bytes bytesReceived = 4242; // deliberately junk ftStatus = FT_GetQueueStatus(ftHandle, &bytesReceived); if (ftStatus != FT_OK) { printf("Failure. FT_GetQueueStatus returned %d.\n", (int)ftStatus); goto exit; } if (bytesReceived != 0) { printf("Failure. %d bytes in input queue -- expected none.\n", (int)bytesReceived); goto exit; } } // Success printf("\nTest PASSED.\n"); retCode = 0; exit: free(readBuffer); free(writeBuffer); if (ftHandle != NULL) FT_Close(ftHandle); return retCode; } release/examples/loopback/jtag.c0000664000000000000000000002525314261476161015716 0ustar rootroot/* * Enable Multi-Protocol Synchronous Serial Engine (MPSSE) on an FTDI chip, * and use JTAG commands to loop DO back to DI. Write a known sequence of * bytes then expect to read them back. Run this with an FT232H, FT2232D, * FT2232H or FT4232H connected. No additional hardware is needed. * * Build with: * gcc jtag.c -o jtagloopback -Wall -Wextra -I.. * -lftd2xx -lpthread -lrt * -Wl,-rpath /usr/local/lib * * Run with: * sudo ./jtagloopback * * On Windows, build with: * cl jtag.c ftd2xx.lib -I.. * and run jtag.exe. */ #include #include #include #include #include "ftd2xx.h" #define UNUSED_PARAMETER(x) (void)(x) #define ARRAY_SIZE(x) (sizeof((x))/sizeof((x)[0])) #ifdef _WIN32 /* Windows doesn't have gettimeofday but winsock.h does have a * definition of timeval: * * struct timeval * { * long tv_sec; * long tv_usec; * }; */ static int gettimeofday(struct timeval *tv, void *timezone) { SYSTEMTIME st; UNUSED_PARAMETER(timezone); GetSystemTime(&st); tv->tv_sec = (long)( (st.wHour * 60 * 60) + (st.wMinute * 60) + (st.wSecond)); tv->tv_usec = 0; // We're not using microseconds here. return 0; } static void timersub(struct timeval *a, struct timeval *b, struct timeval *res) { res->tv_sec = a->tv_sec - b->tv_sec; res->tv_usec = 0; } #else #include #endif // _WIN32 static void dumpBuffer(unsigned char *buffer, int elements) { int j; for (j = 0; j < elements; j++) { if (j % 8 == 0) { if (j % 16 == 0) printf("\n%p: ", &buffer[j]); else printf(" "); // Separate two columns of eight bytes } printf("%02X ", (unsigned int)buffer[j]); } printf("\n\n"); } static FT_STATUS sendJtagCommand(FT_HANDLE ftHandle, unsigned char *sequence, const size_t length) { FT_STATUS ftStatus = FT_OK; DWORD bytesToWrite = (DWORD)length; DWORD bytesWritten = 0; ftStatus = FT_Write(ftHandle, sequence, bytesToWrite, &bytesWritten); if (ftStatus != FT_OK) { printf("Failure. FT_Write returned %d\n", (int)ftStatus); return ftStatus; } if (bytesWritten != bytesToWrite) { printf("Failure. FT_Write wrote %d bytes instead of %d.\n", (int)bytesWritten, (int)bytesToWrite); } return ftStatus; } static FT_STATUS setupJtagLoopback(FT_HANDLE ftHandle, DWORD bytesToWrite) { FT_STATUS ftStatus = FT_OK; unsigned char setup[3] = { 0x80, 0x08, 0x0B // TMS start high; TDO is input }; unsigned char loopback[1] = { 0x84 // Connect TDI/TDO loopback }; unsigned char setClock[3] = { 0x86, 0x04, 0x00 // TCK divisor: CLK = 6 MHz / (1 + 0004) == 1.2 MHz }; unsigned char transceive[3] = { 0x31, 0x00, 0x00 // Write + read; length bytes set later. }; ftStatus = sendJtagCommand(ftHandle, setup, sizeof setup); if (ftStatus != FT_OK) { return ftStatus; } ftStatus = sendJtagCommand(ftHandle, setClock, sizeof setClock); if (ftStatus != FT_OK) { return ftStatus; } ftStatus = sendJtagCommand(ftHandle, loopback, sizeof loopback); if (ftStatus != FT_OK) { return ftStatus; } transceive[1] = (unsigned char)(bytesToWrite & 0x000000FF); transceive[2] = (unsigned char)((bytesToWrite & 0x0000FF00) >> 8); ftStatus = sendJtagCommand(ftHandle, transceive, sizeof transceive); return ftStatus; } int main(int argc, char *argv[]) { int retCode = -1; // Assume failure int f = 0; DWORD driverVersion = 0; FT_STATUS ftStatus = FT_OK; FT_HANDLE ftHandle = NULL; int portNum = 0; // First device found size_t bufferSize = 16 * 1024; DWORD bytesToWrite; DWORD bytesWritten = 0; DWORD bytesReceived = 0; DWORD bytesRead = 0; struct timeval startTime; int journeyDuration; unsigned char *writeBuffer = NULL; unsigned char *readBuffer = NULL; int queueChecks = 0; UNUSED_PARAMETER(argc); UNUSED_PARAMETER(argv); // Make printfs immediate (no buffer) setvbuf(stdout, NULL, _IONBF, 0); printf("Opening FTDI device %d.\n", portNum); ftStatus = FT_Open(portNum, &ftHandle); if (ftStatus != FT_OK) { printf("FT_Open(%d) failed, with error %d.\n", portNum, (int)ftStatus); printf("On Linux, lsmod can check if ftdi_sio (and usbserial) are present.\n"); printf("If so, unload them using rmmod, as they conflict with ftd2xx.\n"); goto exit; } assert(ftHandle != NULL); ftStatus = FT_GetDriverVersion(ftHandle, &driverVersion); if (ftStatus != FT_OK) { printf("Failure. FT_GetDriverVersion returned %d.\n", (int)ftStatus); goto exit; } printf("D2XX version : %x.%x.%x\n", (unsigned int)((driverVersion & 0x00FF0000) >> 16), (unsigned int)((driverVersion & 0x0000FF00) >> 8), (unsigned int)(driverVersion & 0x000000FF) ); ftStatus = FT_ResetDevice(ftHandle); if (ftStatus != FT_OK) { printf("Failure. FT_ResetDevice returned %d.\n", (int)ftStatus); goto exit; } ftStatus = FT_SetBitMode(ftHandle, 0x00, FT_BITMODE_RESET); if (ftStatus != FT_OK) { printf("Failure. FT_SetBitMode returned %d\n", (int)ftStatus); goto exit; } ftStatus = FT_SetLatencyTimer(ftHandle, 2); if (ftStatus != FT_OK) { printf("Failure. FT_SetLatencyTimer returned %d\n", (int)ftStatus); goto exit; } ftStatus = FT_SetTimeouts(ftHandle, 3000, 3000); if (ftStatus != FT_OK) { printf("Failure. FT_SetTimeouts returned %d\n", (int)ftStatus); goto exit; } ftStatus = FT_SetBitMode(ftHandle, 0x0B, FT_BITMODE_MPSSE); if (ftStatus != FT_OK) { printf("Failure. FT_SetBitMode returned %d\n", (int)ftStatus); goto exit; } bytesToWrite = bufferSize; ftStatus = setupJtagLoopback(ftHandle, bytesToWrite); if (ftStatus != FT_OK) { printf("Failure. FT_ResetDevice returned %d.\n", (int)ftStatus); goto exit; } writeBuffer = (unsigned char *)malloc((size_t)bufferSize); if (writeBuffer == NULL) goto exit; // Fill write buffer with consecutive values. for (f = 0; f < (int)bufferSize; f++) { writeBuffer[f] = (unsigned char)f; } printf("\nWriting %d bytes to JTAG loopback...\n", (int)bytesToWrite); ftStatus = FT_Write(ftHandle, writeBuffer, bytesToWrite, &bytesWritten); if (ftStatus != FT_OK) { printf("Failure. FT_Write returned %d\n", (int)ftStatus); goto exit; } if (bytesWritten != bytesToWrite) { printf("Failure. FT_Write wrote %d bytes instead of %d.\n", (int)bytesWritten, (int)bytesToWrite); goto exit; } printf("%d bytes written.\n", (int)bytesWritten); // Keep checking queue until D2XX has received all the bytes we wrote. journeyDuration = 1; // One second should be enough gettimeofday(&startTime, NULL); for (bytesReceived = 0, queueChecks = 0; bytesReceived < bytesWritten; queueChecks++) { // Periodically check for time-out if (queueChecks % 512 == 0) { struct timeval now; struct timeval elapsed; gettimeofday(&now, NULL); timersub(&now, &startTime, &elapsed); if (elapsed.tv_sec > (long int)journeyDuration) { // We've waited too long. Give up. printf("\nTimed out after %ld seconds\n", elapsed.tv_sec); break; } // Display number of bytes D2XX has received printf("%s%d", queueChecks == 0 ? "Number of bytes in D2XX receive-queue: " : ", ", (int)bytesReceived); } ftStatus = FT_GetQueueStatus(ftHandle, &bytesReceived); if (ftStatus != FT_OK) { printf("\nFailure. FT_GetQueueStatus returned %d.\n", (int)ftStatus); goto exit; } } printf("\nGot %d (of %d) bytes.\n", (int)bytesReceived, (int)bytesWritten); // Even if D2XX has the wrong number of bytes, create our // own buffer so we can read and display them. readBuffer = (unsigned char *)calloc(bytesReceived, sizeof(unsigned char)); if (readBuffer == NULL) { printf("Failed to allocate %d bytes.\n", (int)bytesReceived); goto exit; } // Then copy D2XX's buffer to ours. ftStatus = FT_Read(ftHandle, readBuffer, bytesReceived, &bytesRead); if (ftStatus != FT_OK) { printf("Failure. FT_Read returned %d.\n", (int)ftStatus); goto exit; } if (bytesRead != bytesReceived) { printf("Failure. FT_Read only read %d (of %d) bytes.\n", (int)bytesRead, (int)bytesReceived); goto exit; } if (0 != memcmp(writeBuffer, readBuffer, bytesRead)) { printf("Failure. Read-buffer does not match write-buffer.\n"); printf("Write buffer:\n"); dumpBuffer(writeBuffer, bytesReceived); printf("Read buffer:\n"); dumpBuffer(readBuffer, bytesReceived); goto exit; } printf("Received bytes match transmitted bytes.\n"); // Check that queue hasn't gathered any additional unexpected bytes bytesReceived = 4242; // deliberately junk ftStatus = FT_GetQueueStatus(ftHandle, &bytesReceived); if (ftStatus != FT_OK) { printf("Failure. FT_GetQueueStatus returned %d.\n", (int)ftStatus); goto exit; } if (bytesReceived != 0) { printf("Failure. %d bytes in input queue -- expected none.\n", (int)bytesReceived); goto exit; } // Success printf("\nTest PASSED.\n"); retCode = 0; exit: free(readBuffer); free(writeBuffer); if (ftHandle != NULL) { (void)FT_SetBitMode(ftHandle, 0x00, FT_BITMODE_RESET); FT_Close(ftHandle); } return retCode; } release/examples/loopback/Makefile0000664000000000000000000000025314261476161016256 0ustar rootrootTOPDIR := $(shell cd ..; pwd) include $(TOPDIR)/Rules.make APP = loopback all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/EEPROM/0000775000000000000000000000000014261476161014013 5ustar rootrootrelease/examples/EEPROM/write/0000775000000000000000000000000014261476161015145 5ustar rootrootrelease/examples/EEPROM/write/main.c0000664000000000000000000000634514261476161016245 0ustar rootroot/* To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o write main.c -L. -lftd2xx -Wl,-rpath,/usr/local/lib */ #include #include #include "../../ftd2xx.h" int main(int argc, char *argv[]) { FT_STATUS ftStatus; FT_HANDLE ftHandle0; int iport; FT_PROGRAM_DATA Data; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } printf("opening port %d\n", iport); FT_SetVIDPID(0x0403, 0x6011); ftStatus = FT_Open(iport, &ftHandle0); if(ftStatus != FT_OK) { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } printf("ftHandle0 = %p\n", ftHandle0); #ifndef BM_DEVICE Data.Signature1 = 0x00000000; Data.Signature2 = 0xffffffff; Data.VendorId = 0x0403; Data.ProductId = 0x6001; Data.Manufacturer = "FTDI"; Data.ManufacturerId = "FT"; Data.Description = "USB <-> Serial"; Data.SerialNumber = "FT000001"; // if fixed, or NULL Data.MaxPower = 44; Data.PnP = 1; Data.SelfPowered = 0; Data.RemoteWakeup = 1; Data.Rev4 = 1; Data.IsoIn = 0; Data.IsoOut = 0; Data.PullDownEnable = 1; Data.SerNumEnable = 1; Data.USBVersionEnable = 0; Data.USBVersion = 0x110; #else // If 2232C Data.Signature1 = 0x00000000; Data.Signature2 = 0xffffffff; Data.VendorId = 0x0403; Data.ProductId = 0x6010; Data.Manufacturer = "FTDI"; Data.ManufacturerId = "FT"; Data.Description = "SPI"; Data.SerialNumber = "FT123452"; // if fixed, or NULL Data.MaxPower = 200; Data.PnP = 1; Data.SelfPowered = 0; Data.RemoteWakeup = 0; Data.Rev4 = 0; Data.IsoIn = 0; Data.IsoOut = 0; Data.PullDownEnable = 0; Data.SerNumEnable = 0; Data.USBVersionEnable = 0; Data.USBVersion = 0; Data.Rev5 = 1; // non-zero if Rev5 chip, zero otherwise Data.IsoInA = 0; // non-zero if in endpoint is isochronous Data.IsoInB = 0; // non-zero if in endpoint is isochronous Data.IsoOutA = 0; // non-zero if out endpoint is isochronous Data.IsoOutB = 0; // non-zero if out endpoint is isochronous Data.PullDownEnable5 = 0; // non-zero if pull down enabled Data.SerNumEnable5 = 1; // non-zero if serial number to be used Data.USBVersionEnable5 = 0; // non-zero if chip uses USBVersion Data.USBVersion5 = 0x0200; // BCD (0x0200 => USB2) Data.AIsHighCurrent = 0; // non-zero if interface is high current Data.BIsHighCurrent = 0; // non-zero if interface is high current Data.IFAIsFifo = 1; // non-zero if interface is 245 FIFO Data.IFAIsFifoTar = 0; // non-zero if interface is 245 FIFO CPU target Data.IFAIsFastSer = 0; // non-zero if interface is Fast serial Data.AIsVCP = 0; // non-zero if interface is to use VCP drivers Data.IFBIsFifo = 1; // non-zero if interface is 245 FIFO Data.IFBIsFifoTar = 0; // non-zero if interface is 245 FIFO CPU target Data.IFBIsFastSer = 0; // non-zero if interface is Fast serial Data.BIsVCP = 0; // non-zero if interface is to use VCP drivers #endif ftStatus = FT_EE_Program(ftHandle0, &Data); if(ftStatus != FT_OK) { printf("FT_EE_Program failed (%d)\n", (int)ftStatus); FT_Close(ftHandle0); } FT_Close(ftHandle0); return 0; } release/examples/EEPROM/write/Makefile0000664000000000000000000000027414261476161016610 0ustar rootrootTOPDIR := $(shell cd ..; cd ..; pwd) include $(TOPDIR)/Rules.make APP = write all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: rm -f *.o ; rm $(APP) release/examples/EEPROM/erase/0000775000000000000000000000000014261476161015112 5ustar rootrootrelease/examples/EEPROM/erase/main.c0000664000000000000000000000156214261476161016206 0ustar rootroot/* To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o erase main.c -L. -lftd2xx -Wl,-rpath,/usr/local/lib */ #include #include "../../ftd2xx.h" #define BUF_SIZE 0x1000 int main(int argc, char *argv[]) { FT_STATUS ftStatus; FT_HANDLE ftHandle0; int iport; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } printf("opening port %d\n", iport); FT_SetVIDPID(0x0403, 0x6007); ftStatus = FT_Open(iport, &ftHandle0); if(ftStatus != FT_OK) { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } ftStatus = FT_EraseEE(ftHandle0); if(ftStatus != FT_OK) { printf("Erase failed\n"); } FT_Close(ftHandle0); return 0; } release/examples/EEPROM/erase/Makefile0000664000000000000000000000027514261476161016556 0ustar rootrootTOPDIR := $(shell cd ..; cd ..; pwd) include $(TOPDIR)/Rules.make APP = erase all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/EEPROM/user/0000775000000000000000000000000014261476161014771 5ustar rootrootrelease/examples/EEPROM/user/write/0000775000000000000000000000000014261476161016123 5ustar rootrootrelease/examples/EEPROM/user/write/main.c0000664000000000000000000000260014261476161017211 0ustar rootroot/* UA write sample. To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o writeua main.c -L. -lftd2xx -Wl,-rpath,/usr/local/lib */ #include #include #include #include #include "../../../ftd2xx.h" int main(int argc, char *argv[]) { unsigned char * pucUAdata; DWORD dwUASize; FT_HANDLE ftHandle0; FT_STATUS ftStatus; int iport; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } printf("opening port %d\n", iport); ftStatus = FT_Open(iport, &ftHandle0); if(ftStatus == FT_OK) { printf("ftHandle0 = %p\n", ftHandle0); } else { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } ftStatus = FT_EE_UASize(ftHandle0, &dwUASize); if(ftStatus == FT_OK) printf("dwUASize = %d\n", (int)dwUASize); else { printf("Could not read UA size\n"); FT_Close(ftHandle0); return 1; } pucUAdata = (unsigned char *)malloc(dwUASize); if(pucUAdata == NULL) { printf("Out of resources\n"); FT_Close(ftHandle0); return 1; } memset(pucUAdata, 0xF0, dwUASize); if(ftStatus == FT_OK) { ftStatus = FT_EE_UAWrite(ftHandle0, pucUAdata, dwUASize); } free(pucUAdata); FT_Close(ftHandle0); return 0; } release/examples/EEPROM/user/write/Makefile0000664000000000000000000000030614261476161017562 0ustar rootrootTOPDIR := $(shell cd ..; cd ..; cd ..; pwd) include $(TOPDIR)/Rules.make APP = writeua all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/EEPROM/user/size/0000775000000000000000000000000014261476161015743 5ustar rootrootrelease/examples/EEPROM/user/size/main.c0000664000000000000000000000173214261476161017036 0ustar rootroot/* UA size sample. To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o sizeua main.c -L. -lftd2xx -Wl,-rpath,/usr/local/lib */ #include #include #include "../../../ftd2xx.h" int main(int argc, char *argv[]) { DWORD dwUASize; FT_STATUS ftStatus; FT_HANDLE ftHandle0; int iport; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } printf("opening port %d\n", iport); ftStatus = FT_Open(iport, &ftHandle0); if(ftStatus == FT_OK) { printf("ftHandle0 = %p\n", (void *)ftHandle0); } else { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } ftStatus = FT_EE_UASize(ftHandle0, &dwUASize); if(ftStatus == FT_OK) printf("dwUASize = %d\n", (int)dwUASize); ftStatus = FT_Close(ftHandle0); return 0; } release/examples/EEPROM/user/size/Makefile0000664000000000000000000000030514261476161017401 0ustar rootrootTOPDIR := $(shell cd ..; cd ..; cd ..; pwd) include $(TOPDIR)/Rules.make APP = sizeua all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/EEPROM/user/read/0000775000000000000000000000000014261476161015704 5ustar rootrootrelease/examples/EEPROM/user/read/main.c0000664000000000000000000000274314261476161017002 0ustar rootroot/* UA read sample. To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o readua main.c -L. -lftd2xx -Wl,-rpath,/usr/local/lib */ #include #include #include #include "../../../ftd2xx.h" int main(int argc, char *argv[]) { unsigned char * pucUAdata; DWORD dwUASize, dwUARead; FILE * fp; FT_HANDLE ftHandle0; FT_STATUS ftStatus; int iport; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } printf("opening port %d\n", iport); ftStatus = FT_Open(iport, &ftHandle0); if(ftStatus == FT_OK) { printf("ftHandle0 = %p\n", ftHandle0); } else { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } ftStatus = FT_EE_UASize(ftHandle0, &dwUASize); if(ftStatus == FT_OK) printf("dwUASize = %d\n", (int)dwUASize); else { printf("Could not read UA size\n"); FT_Close(ftHandle0); return 1; } pucUAdata = (unsigned char *)malloc(dwUASize); if(pucUAdata == NULL) { printf("Out of resources\n"); FT_Close(ftHandle0); return 1; } ftStatus = FT_EE_UARead(ftHandle0, pucUAdata, dwUASize, &dwUARead); if(ftStatus == FT_OK) { fp = fopen("UA_DATA.bin", "w+"); fwrite(pucUAdata, 1, dwUARead, fp); fclose(fp); } else{ printf("could not read UA\n"); } free(pucUAdata); FT_Close(ftHandle0); return 0; } release/examples/EEPROM/user/read/ua_data.bin0000664000000000000000000000005414261476161017773 0ustar rootrootrelease/examples/EEPROM/user/read/Makefile0000664000000000000000000000030614261476161017343 0ustar rootrootTOPDIR := $(shell cd ..; cd ..; cd ..; pwd) include $(TOPDIR)/Rules.make APP = readua all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/EEPROM/read/0000775000000000000000000000000014261476161014726 5ustar rootrootrelease/examples/EEPROM/read/main.c0000664000000000000000000001441414261476161016022 0ustar rootroot/* To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o read main.c -L. -lftd2xx -Wl,-rpath,/usr/local/lib */ #include #include #include #include "../../ftd2xx.h" int main(int argc, char *argv[]) { FT_STATUS ftStatus; FT_HANDLE ftHandle0; int iport; static FT_PROGRAM_DATA Data; static FT_DEVICE ftDevice; DWORD libraryVersion = 0; int retCode = 0; ftStatus = FT_GetLibraryVersion(&libraryVersion); if (ftStatus == FT_OK) { printf("Library version = 0x%x\n", (unsigned int)libraryVersion); } else { printf("Error reading library version.\n"); return 1; } if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } printf("Opening port %d\n", iport); ftStatus = FT_Open(iport, &ftHandle0); if(ftStatus != FT_OK) { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } printf("FT_Open succeeded. Handle is %p\n", ftHandle0); ftStatus = FT_GetDeviceInfo(ftHandle0, &ftDevice, NULL, NULL, NULL, NULL); if (ftStatus != FT_OK) { printf("FT_GetDeviceType FAILED!\n"); retCode = 1; goto exit; } printf("FT_GetDeviceInfo succeeded. Device is type %d.\n", (int)ftDevice); /* MUST set Signature1 and 2 before calling FT_EE_Read */ Data.Signature1 = 0x00000000; Data.Signature2 = 0xffffffff; Data.Manufacturer = (char *)malloc(256); /* E.g "FTDI" */ Data.ManufacturerId = (char *)malloc(256); /* E.g. "FT" */ Data.Description = (char *)malloc(256); /* E.g. "USB HS Serial Converter" */ Data.SerialNumber = (char *)malloc(256); /* E.g. "FT000001" if fixed, or NULL */ if (Data.Manufacturer == NULL || Data.ManufacturerId == NULL || Data.Description == NULL || Data.SerialNumber == NULL) { printf("Failed to allocate memory.\n"); retCode = 1; goto exit; } ftStatus = FT_EE_Read(ftHandle0, &Data); if(ftStatus != FT_OK) { printf("FT_EE_Read failed\n"); retCode = 1; goto exit; } printf("FT_EE_Read succeeded.\n\n"); printf("Signature1 = %d\n", (int)Data.Signature1); printf("Signature2 = %d\n", (int)Data.Signature2); printf("Version = %d\n", (int)Data.Version); printf("VendorId = 0x%04X\n", Data.VendorId); printf("ProductId = 0x%04X\n", Data.ProductId); printf("Manufacturer = %s\n", Data.Manufacturer); printf("ManufacturerId = %s\n", Data.ManufacturerId); printf("Description = %s\n", Data.Description); printf("SerialNumber = %s\n", Data.SerialNumber); printf("MaxPower = %d\n", Data.MaxPower); printf("PnP = %d\n", Data.PnP) ; printf("SelfPowered = %d\n", Data.SelfPowered); printf("RemoteWakeup = %d\n", Data.RemoteWakeup); if (ftDevice == FT_DEVICE_BM) { /* Rev4 (FT232B) extensions */ printf("BM:\n"); printf("---\n"); printf("\tRev4 = 0x%X\n", Data.Rev4); printf("\tIsoIn = 0x%X\n", Data.IsoIn); printf("\tIsoOut = 0x%X\n", Data.IsoOut); printf("\tPullDownEnable = 0x%X\n", Data.PullDownEnable); printf("\tSerNumEnable = 0x%X\n", Data.SerNumEnable); printf("\tUSBVersionEnable = 0x%X\n", Data.USBVersionEnable); printf("\tUSBVersion = 0x%X\n", Data.USBVersion); } if (ftDevice == FT_DEVICE_2232C) { /* Rev 5 (FT2232C) extensions */ printf("2232RC:\n"); printf("-------\n"); printf("\tRev5 = 0x%X\n", Data.Rev5); printf("\tIsoInA = 0x%X\n", Data.IsoInA); printf("\tIsoInB = 0x%X\n", Data.IsoInB); printf("\tIsoOutA = 0x%X\n", Data.IsoOutA); printf("\tIsoOutB = 0x%X\n", Data.IsoOutB); printf("\tPullDownEnable5 = 0x%X\n", Data.PullDownEnable5); printf("\tSerNumEnable5 = 0x%X\n", Data.SerNumEnable5); printf("\tUSBVersionEnable5 = 0x%X\n", Data.USBVersionEnable5); printf("\tUSBVersion5 = 0x%X\n", Data.USBVersion5); printf("\tAIsHighCurrent = 0x%X\n", Data.AIsHighCurrent); printf("\tBIsHighCurrent = 0x%X\n", Data.BIsHighCurrent); printf("\tIFAIsFifo = 0x%X\n", Data.IFAIsFifo); printf("\tIFAIsFifoTar = 0x%X\n", Data.IFAIsFifoTar); printf("\tIFAIsFastSer = 0x%X\n", Data.IFAIsFastSer); printf("\tAIsVCP = 0x%X\n", Data.AIsVCP); printf("\tIFBIsFifo = 0x%X\n", Data.IFBIsFifo); printf("\tIFBIsFifoTar = 0x%X\n", Data.IFBIsFifoTar); printf("\tIFBIsFastSer = 0x%X\n", Data.IFBIsFastSer); printf("\tBIsVCP = 0x%X\n", Data.BIsVCP); } if (ftDevice == FT_DEVICE_232R) { /* Rev 6 (FT232R) extensions */ printf("232R:\n"); printf("-----\n"); printf("\tUseExtOsc = 0x%X\n", Data.UseExtOsc); // Use External Oscillator printf("\tHighDriveIOs = 0x%X\n", Data.HighDriveIOs); // High Drive I/Os printf("\tEndpointSize = 0x%X\n", Data.EndpointSize); // Endpoint size printf("\tPullDownEnableR = 0x%X\n", Data.PullDownEnableR); // non-zero if pull down enabled printf("\tSerNumEnableR = 0x%X\n", Data.SerNumEnableR); // non-zero if serial number to be used printf("\tInvertTXD = 0x%X\n", Data.InvertTXD); // non-zero if invert TXD printf("\tInvertRXD = 0x%X\n", Data.InvertRXD); // non-zero if invert RXD printf("\tInvertRTS = 0x%X\n", Data.InvertRTS); // non-zero if invert RTS printf("\tInvertCTS = 0x%X\n", Data.InvertCTS); // non-zero if invert CTS printf("\tInvertDTR = 0x%X\n", Data.InvertDTR); // non-zero if invert DTR printf("\tInvertDSR = 0x%X\n", Data.InvertDSR); // non-zero if invert DSR printf("\tInvertDCD = 0x%X\n", Data.InvertDCD); // non-zero if invert DCD printf("\tInvertRI = 0x%X\n", Data.InvertRI); // non-zero if invert RI printf("\tCbus0 = 0x%X\n", Data.Cbus0); // Cbus Mux control printf("\tCbus1 = 0x%X\n", Data.Cbus1); // Cbus Mux control printf("\tCbus2 = 0x%X\n", Data.Cbus2); // Cbus Mux control printf("\tCbus3 = 0x%X\n", Data.Cbus3); // Cbus Mux control printf("\tCbus4 = 0x%X\n", Data.Cbus4); // Cbus Mux control printf("\tRIsD2XX = 0x%X\n", Data.RIsD2XX); // non-zero if using D2XX } exit: free(Data.Manufacturer); free(Data.ManufacturerId); free(Data.Description); free(Data.SerialNumber); FT_Close(ftHandle0); printf("Returning %d\n", retCode); return retCode; } release/examples/EEPROM/read/eeprom-read.c0000664000000000000000000003156514261476161017304 0ustar rootroot/* * FT_EEPROM_Read demonstration. * Dumps the EEPROM fields of any connected FTDI device. * * Copy libftd2xx.a, ftd2xx.h, WinTypes.h into current directory. * * Compile: * cc eeprom-read.c -L. -lftd2xx -lpthread * * On Mac, the above line needs these extra dependencies: * -lobjc -framework IOKit -framework CoreFoundation * * Run: * sudo ./a.out */ #include #include #include #include #include "ftd2xx.h" typedef union Eeprom_Generic { FT_EEPROM_232B b; FT_EEPROM_232R r; FT_EEPROM_232H singleH; FT_EEPROM_2232 dual; FT_EEPROM_2232H dualH; FT_EEPROM_4232H quadH; FT_EEPROM_X_SERIES x; } Eeprom_Generic; static const char *deviceName(FT_DEVICE deviceType) { switch(deviceType) { default: return "Unknown"; case FT_DEVICE_BM: return "232 B"; case FT_DEVICE_2232C: return "Dual 232"; case FT_DEVICE_232R: return "232 R"; case FT_DEVICE_2232H: return "Dual Hi-Speed 232"; case FT_DEVICE_4232H: return "Quad Hi-Speed 232"; case FT_DEVICE_232H: return "Hi-Speed 232"; case FT_DEVICE_X_SERIES: return "X Series"; } } static void displayHeader (FT_EEPROM_HEADER *header) { printf("deviceType: %s\n", deviceName(header->deviceType)); printf("VendorId: %04x\n", header->VendorId); printf("ProductId: %04x\n", header->ProductId); printf("SerNumEnable: %02x\n", header->SerNumEnable); printf("MaxPower: %04x\n", header->MaxPower); printf("SelfPowered: %02x\n", header->SelfPowered); printf("RemoteWakeup: %02x\n", header->RemoteWakeup); printf("PullDownEnable: %02x\n", header->PullDownEnable); } static void displayDual (FT_EEPROM_2232 *dual) { printf("AIsHighCurrent: %02x\n", dual->AIsHighCurrent); printf("BIsHighCurrent: %02x\n", dual->BIsHighCurrent); printf("AIsFifo: %02x\n", dual->AIsFifo); printf("AIsFifoTar: %02x\n", dual->AIsFifoTar); printf("AIsFastSer: %02x\n", dual->AIsFastSer); printf("BIsFifo: %02x\n", dual->BIsFifo); printf("BIsFifoTar: %02x\n", dual->BIsFifoTar); printf("BIsFastSer: %02x\n", dual->BIsFastSer); printf("ADriverType: %02x\n", dual->ADriverType); printf("BDriverType: %02x\n", dual->BDriverType); } static void displayR (FT_EEPROM_232R *r) { printf("IsHighCurrent: %02x\n", r->IsHighCurrent); printf("UseExtOsc: %02x\n", r->UseExtOsc); printf("InvertTXD: %02x\n", r->InvertTXD); printf("InvertRXD: %02x\n", r->InvertRXD); printf("InvertRTS: %02x\n", r->InvertRTS); printf("InvertCTS: %02x\n", r->InvertCTS); printf("InvertDTR: %02x\n", r->InvertDTR); printf("InvertDSR: %02x\n", r->InvertDSR); printf("InvertDCD: %02x\n", r->InvertDCD); printf("InvertRI: %02x\n", r->InvertRI); printf("Cbus0: %02x\n", r->Cbus0); printf("Cbus1: %02x\n", r->Cbus1); printf("Cbus2: %02x\n", r->Cbus2); printf("Cbus3: %02x\n", r->Cbus3); printf("Cbus4: %02x\n", r->Cbus4); printf("DriverType: %02x\n", r->DriverType); } static void displayDualH (FT_EEPROM_2232H *dualH) { printf("ALSlowSlew: %02x\n", dualH->ALSlowSlew); printf("ALSchmittInput: %02x\n", dualH->ALSchmittInput); printf("ALDriveCurrent: %02x\n", dualH->ALDriveCurrent); printf("AHSlowSlew: %02x\n", dualH->AHSlowSlew); printf("AHSchmittInput: %02x\n", dualH->AHSchmittInput); printf("AHDriveCurrent: %02x\n", dualH->AHDriveCurrent); printf("BLSlowSlew: %02x\n", dualH->BLSlowSlew); printf("BLSchmittInput: %02x\n", dualH->BLSchmittInput); printf("BLDriveCurrent: %02x\n", dualH->BLDriveCurrent); printf("BHSlowSlew: %02x\n", dualH->BHSlowSlew); printf("BHSchmittInput: %02x\n", dualH->BHSchmittInput); printf("BHDriveCurrent: %02x\n", dualH->BHDriveCurrent); printf("AIsFifo: %02x\n", dualH->AIsFifo); printf("AIsFifoTar: %02x\n", dualH->AIsFifoTar); printf("AIsFastSer: %02x\n", dualH->AIsFastSer); printf("BIsFifo: %02x\n", dualH->BIsFifo); printf("BIsFifoTar: %02x\n", dualH->BIsFifoTar); printf("BIsFastSer: %02x\n", dualH->BIsFastSer); printf("PowerSaveEnable: %02x\n", dualH->PowerSaveEnable); printf("ADriverType: %02x\n", dualH->ADriverType); printf("BDriverType: %02x\n", dualH->BDriverType); } static void displayQuadH (FT_EEPROM_4232H *quadH) { printf("ASlowSlew: %02x\n", quadH->ASlowSlew); printf("ASchmittInput: %02x\n", quadH->ASchmittInput); printf("ADriveCurrent: %02x\n", quadH->ADriveCurrent); printf("BSlowSlew: %02x\n", quadH->BSlowSlew); printf("BSchmittInput: %02x\n", quadH->BSchmittInput); printf("BDriveCurrent: %02x\n", quadH->BDriveCurrent); printf("CSlowSlew: %02x\n", quadH->CSlowSlew); printf("CSchmittInput: %02x\n", quadH->CSchmittInput); printf("CDriveCurrent: %02x\n", quadH->CDriveCurrent); printf("DSlowSlew: %02x\n", quadH->DSlowSlew); printf("DSchmittInput: %02x\n", quadH->DSchmittInput); printf("DDriveCurrent: %02x\n", quadH->DDriveCurrent); printf("ARIIsTXDEN: %02x\n", quadH->ARIIsTXDEN); printf("BRIIsTXDEN: %02x\n", quadH->BRIIsTXDEN); printf("CRIIsTXDEN: %02x\n", quadH->CRIIsTXDEN); printf("DRIIsTXDEN: %02x\n", quadH->DRIIsTXDEN); printf("ADriverType: %02x\n", quadH->ADriverType); printf("BDriverType: %02x\n", quadH->BDriverType); printf("CDriverType: %02x\n", quadH->CDriverType); printf("DDriverType: %02x\n", quadH->DDriverType); } static void displaySingleH (FT_EEPROM_232H *singleH) { printf("ACSlowSlew: %02x\n", singleH->ACSlowSlew); printf("ACSchmittInput: %02x\n", singleH->ACSchmittInput); printf("ACDriveCurrent: %02x\n", singleH->ACDriveCurrent); printf("ADSlowSlew: %02x\n", singleH->ADSlowSlew); printf("ADSchmittInput: %02x\n", singleH->ADSchmittInput); printf("ADDriveCurrent: %02x\n", singleH->ADDriveCurrent); printf("Cbus0: %02x\n", singleH->Cbus0); printf("Cbus1: %02x\n", singleH->Cbus1); printf("Cbus2: %02x\n", singleH->Cbus2); printf("Cbus3: %02x\n", singleH->Cbus3); printf("Cbus4: %02x\n", singleH->Cbus4); printf("Cbus5: %02x\n", singleH->Cbus5); printf("Cbus6: %02x\n", singleH->Cbus6); printf("Cbus7: %02x\n", singleH->Cbus7); printf("Cbus8: %02x\n", singleH->Cbus8); printf("Cbus9: %02x\n", singleH->Cbus9); printf("FT1248Cpol: %02x\n", singleH->FT1248Cpol); printf("FT1248Lsb: %02x\n", singleH->FT1248Lsb); printf("FT1248FlowControl: %02x\n", singleH->FT1248FlowControl); printf("IsFifo: %02x\n", singleH->IsFifo); printf("IsFifoTar: %02x\n", singleH->IsFifoTar); printf("IsFastSer: %02x\n", singleH->IsFastSer); printf("IsFT1248 : %02x\n", singleH->IsFT1248 ); printf("PowerSaveEnable: %02x\n", singleH->PowerSaveEnable); printf("DriverType: %02x\n", singleH->DriverType); } static void displayX (FT_EEPROM_X_SERIES *x) { printf("ACSlowSlew: %02x\n", x->ACSlowSlew); printf("ACSchmittInput: %02x\n", x->ACSchmittInput); printf("ACDriveCurrent: %02x\n", x->ACDriveCurrent); printf("ADSlowSlew: %02x\n", x->ADSlowSlew); printf("ADSchmittInput: %02x\n", x->ADSchmittInput); printf("ADDriveCurrent: %02x\n", x->ADDriveCurrent); printf("Cbus0: %02x\n", x->Cbus0); printf("Cbus1: %02x\n", x->Cbus1); printf("Cbus2: %02x\n", x->Cbus2); printf("Cbus3: %02x\n", x->Cbus3); printf("Cbus4: %02x\n", x->Cbus4); printf("Cbus5: %02x\n", x->Cbus5); printf("Cbus6: %02x\n", x->Cbus6); printf("InvertTXD: %02x\n", x->InvertTXD); printf("InvertRXD: %02x\n", x->InvertRXD); printf("InvertRTS: %02x\n", x->InvertRTS); printf("InvertCTS: %02x\n", x->InvertCTS); printf("InvertDTR: %02x\n", x->InvertDTR); printf("InvertDSR: %02x\n", x->InvertDSR); printf("InvertDCD: %02x\n", x->InvertDCD); printf("InvertRI: %02x\n", x->InvertRI); printf("BCDEnable: %02x\n", x->BCDEnable); printf("BCDForceCbusPWREN: %02x\n", x->BCDForceCbusPWREN); printf("BCDDisableSleep: %02x\n", x->BCDDisableSleep); printf("I2CSlaveAddress: %04x\n", x->I2CSlaveAddress); printf("I2CDeviceId: %04x\n", x->I2CDeviceId); printf("I2CDisableSchmitt: %02x\n", x->I2CDisableSchmitt); printf("FT1248Cpol: %02x\n", x->FT1248Cpol); printf("FT1248Lsb: %02x\n", x->FT1248Lsb); printf("FT1248FlowControl: %02x\n", x->FT1248FlowControl); printf("RS485EchoSuppress: %02x\n", x->RS485EchoSuppress); printf("PowerSaveEnable: %02x\n", x->PowerSaveEnable); printf("DriverType: %02x\n", x->DriverType); } static int readEeprom (DWORD locationId, FT_DEVICE deviceType) { int success = 0; FT_STATUS ftStatus; FT_HANDLE ftHandle = (FT_HANDLE)NULL; char manufacturer[64]; char manufacturerId[64]; char description[64]; char serialNumber[64]; Eeprom_Generic *eeprom = NULL; FT_EEPROM_HEADER *header; ftStatus = FT_OpenEx((PVOID)(uintptr_t)locationId, FT_OPEN_BY_LOCATION, &ftHandle); if (ftStatus != FT_OK) { printf("FT_OpenEx failed (error code %d)\n", (int)ftStatus); goto exit; } /* Allocate enough to hold biggest EEPROM structure */ eeprom = calloc(1, sizeof(*eeprom)); if (eeprom == NULL) { printf("Allocation failure.\n"); goto exit; } /* EEPROM_HEADER is first member of every type of eeprom */ header = (FT_EEPROM_HEADER *)eeprom; header->deviceType = deviceType; manufacturer[0] = '\0'; manufacturerId[0] = '\0'; description[0] = '\0'; serialNumber[0] = '\0'; ftStatus = FT_EEPROM_Read(ftHandle, eeprom, sizeof(*eeprom), manufacturer, manufacturerId, description, serialNumber); if (ftStatus != FT_OK) { printf("FT_EEPROM_Read failed (error code %d)\n", (int)ftStatus); goto exit; } printf("Manufacturer = %s\n", manufacturer); printf("ManufacturerId = %s\n", manufacturerId); printf("Description = %s\n", description); printf("Serial number = %s\n", serialNumber); displayHeader((FT_EEPROM_HEADER *)eeprom); switch(deviceType) { default: case FT_DEVICE_BM: // No further info to display break; case FT_DEVICE_2232C: displayDual(&eeprom->dual); break; case FT_DEVICE_232R: displayR(&eeprom->r); break; case FT_DEVICE_2232H: displayDualH(&eeprom->dualH); break; case FT_DEVICE_4232H: displayQuadH(&eeprom->quadH); break; case FT_DEVICE_232H: displaySingleH(&eeprom->singleH); break; case FT_DEVICE_X_SERIES: displayX(&eeprom->x); break; } printf("\n"); // Success success = 1; exit: (void)FT_Close(ftHandle); free(eeprom); return success; } int main (int argc, char *argv[]) { FT_STATUS ftStatus; FT_DEVICE_LIST_INFO_NODE *devInfo = NULL; DWORD numDevs = 0; int i; int retCode = 0; /* Unused parameters */ (void)argc; (void)argv; /* Discover how many FTDI devices are connected */ ftStatus = FT_CreateDeviceInfoList(&numDevs); if (ftStatus != FT_OK) { printf("FT_CreateDeviceInfoList failed (error code %d)\n", (int)ftStatus); goto exit; } if (numDevs == 0) { printf("No devices connected.\n"); goto exit; } /* Allocate storage */ devInfo = calloc((size_t)numDevs, sizeof(FT_DEVICE_LIST_INFO_NODE)); if (devInfo == NULL) { printf("Allocation failure.\n"); goto exit; } /* Populate the list of info nodes */ ftStatus = FT_GetDeviceInfoList(devInfo, &numDevs); if (ftStatus != FT_OK) { printf("FT_GetDeviceInfoList failed (error code %d)\n", (int)ftStatus); goto exit; } /* Display info (including EEPROM fields) for each connected FTDI device */ for (i = 0; i < (int)numDevs; i++) { printf("Device %d:\n",i); printf(" Flags = 0x%x\n",devInfo[i].Flags); printf(" Type = 0x%x\n",devInfo[i].Type); printf(" ID = 0x%04x\n",devInfo[i].ID); printf(" LocId = 0x%x\n",devInfo[i].LocId); printf(" SerialNumber = %s\n",devInfo[i].SerialNumber); printf(" Description = %s\n",devInfo[i].Description); printf(" ftHandle = %p\n",devInfo[i].ftHandle); if (!readEeprom(devInfo[i].LocId, devInfo[i].Type)) { goto exit; } } exit: free(devInfo); return retCode; } release/examples/EEPROM/read/Makefile0000664000000000000000000000027414261476161016371 0ustar rootrootTOPDIR := $(shell cd ..; cd ..; pwd) include $(TOPDIR)/Rules.make APP = read all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/MultiThread/0000775000000000000000000000000014261476161015246 5ustar rootrootrelease/examples/MultiThread/main.c0000664000000000000000000000300414261476161016333 0ustar rootroot/* A Simple multithreaded application that continually watches the read queue until the application exits. gcc -o multi main.c -lpthread -lftd2xx -Wl,-rpath /usr/local/lib */ #include #include #include #include "../ftd2xx.h" FT_HANDLE ftHandle; int exit_reader = 0; /* This is the main reader thread - continually waits for a read */ void *read_watch(void *pArgs) { char buf[20]; DWORD dwRet; FT_STATUS ftStatus; (void)pArgs; /* Deliberately unused parameter */ while(exit_reader != 1) { // printf("Write\n"); ftStatus = FT_Write(ftHandle, buf, 20, &dwRet); if (ftStatus != FT_OK) printf("Error: FT_Write returned %d\n", (int)ftStatus); // sleep(1); } (void)FT_Close(ftHandle); return NULL; } int main(int argc, char *argv[]) { pthread_t thread_id; int i; FT_STATUS ftStatus; (void)argc; /* Deliberately unused parameter */ (void)argv; /* Deliberately unused parameter */ exit_reader = 0; ftStatus = FT_Open(0, &ftHandle); pthread_create(&thread_id, NULL, &read_watch, NULL); for(i = 0; i < 1000; i++) { char buf[100]; DWORD index = 0; ftStatus = FT_ListDevices((PVOID)(uintptr_t)index, (void*)buf, FT_LIST_BY_INDEX | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus == FT_OK) { // printf("FT_LIST_BY_INDEX = %s\n"); } else { printf("FT_LIST_BY_INDEX failed(%d)\n", (int)ftStatus); } } exit_reader = 1; /* wait for it to exit */ pthread_join(thread_id, NULL); return 0; } release/examples/MultiThread/Makefile0000664000000000000000000000026614261476161016712 0ustar rootrootTOPDIR := $(shell cd ..; pwd) include $(TOPDIR)/Rules.make APP = multi all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/ftd2xx.h0000775000000000000000000043217014261476163014430 0ustar rootroot/*++ Copyright (c) 2001-2021 Future Technology Devices International Limited THIS SOFTWARE IS PROVIDED BY FUTURE TECHNOLOGY DEVICES INTERNATIONAL LIMITED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL FUTURE TECHNOLOGY DEVICES INTERNATIONAL LIMITED BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE, DATA, OR PROFITS OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. FTDI DRIVERS MAY BE USED ONLY IN CONJUNCTION WITH PRODUCTS BASED ON FTDI PARTS. FTDI DRIVERS MAY BE DISTRIBUTED IN ANY FORM AS LONG AS LICENSE INFORMATION IS NOT MODIFIED. IF A CUSTOM VENDOR ID AND/OR PRODUCT ID OR DESCRIPTION STRING ARE USED, IT IS THE RESPONSIBILITY OF THE PRODUCT MANUFACTURER TO MAINTAIN ANY CHANGES AND SUBSEQUENT WHQL RE-CERTIFICATION AS A RESULT OF MAKING THESE CHANGES. Module Name: ftd2xx.h Abstract: Native USB device driver for FTDI FT232x, FT245x, FT2232x, FT4232x, FT2233H and FT4233H devices FTD2XX library definitions Environment: kernel & user mode --*/ /** @file ftd2xx.h */ #ifndef FTD2XX_H #define FTD2XX_H #ifdef _WIN32 // Compiling on Windows #include // The following ifdef block is the standard way of creating macros // which make exporting from a DLL simpler. All files within this DLL // are compiled with the FTD2XX_EXPORTS symbol defined on the command line. // This symbol should not be defined on any project that uses this DLL. // This way any other project whose source files include this file see // FTD2XX_API functions as being imported from a DLL, whereas this DLL // sees symbols defined with this macro as being exported. #ifdef FTD2XX_EXPORTS #define FTD2XX_API __declspec(dllexport) #elif defined(FTD2XX_STATIC) // Avoid decorations when linking statically to D2XX. #define FTD2XX_API // Static D2XX depends on these Windows libs: #pragma comment(lib, "setupapi.lib") #pragma comment(lib, "advapi32.lib") #pragma comment(lib, "user32.lib") #else #define FTD2XX_API __declspec(dllimport) #endif #else // _WIN32 // Compiling on non-Windows platform. #include "WinTypes.h" // No decorations needed. #define FTD2XX_API #endif // _WIN32 /** @name FT_HANDLE * An opaque value used as a handle to an opened FT device. */ typedef PVOID FT_HANDLE; /** @{ * @name FT_STATUS * @details Return status values for API calls. */ typedef ULONG FT_STATUS; enum { FT_OK, FT_INVALID_HANDLE, FT_DEVICE_NOT_FOUND, FT_DEVICE_NOT_OPENED, FT_IO_ERROR, FT_INSUFFICIENT_RESOURCES, FT_INVALID_PARAMETER, FT_INVALID_BAUD_RATE, FT_DEVICE_NOT_OPENED_FOR_ERASE, FT_DEVICE_NOT_OPENED_FOR_WRITE, FT_FAILED_TO_WRITE_DEVICE, FT_EEPROM_READ_FAILED, FT_EEPROM_WRITE_FAILED, FT_EEPROM_ERASE_FAILED, FT_EEPROM_NOT_PRESENT, FT_EEPROM_NOT_PROGRAMMED, FT_INVALID_ARGS, FT_NOT_SUPPORTED, FT_OTHER_ERROR, FT_DEVICE_LIST_NOT_READY, }; /** @} */ /** @name FT_SUCCESS Macro * Macro to determine success of an API call. * @returns Non-zero for successful call. */ #define FT_SUCCESS(status) ((status) == FT_OK) /** @{ * @name FT_OpenEx Flags * @see FT_OpenEx */ #define FT_OPEN_BY_SERIAL_NUMBER 1 #define FT_OPEN_BY_DESCRIPTION 2 #define FT_OPEN_BY_LOCATION 4 #define FT_OPEN_MASK (FT_OPEN_BY_SERIAL_NUMBER | \ FT_OPEN_BY_DESCRIPTION | \ FT_OPEN_BY_LOCATION) /** @} */ /** @{ * @name FT_ListDevices Flags * @remarks Used in conjunction with FT_OpenEx Flags * @see FT_ListDevices * @see FT_OpenEx */ #define FT_LIST_NUMBER_ONLY 0x80000000 #define FT_LIST_BY_INDEX 0x40000000 #define FT_LIST_ALL 0x20000000 #define FT_LIST_MASK (FT_LIST_NUMBER_ONLY|FT_LIST_BY_INDEX|FT_LIST_ALL) /** @} */ /** @{ * @name Baud Rates * Standard baud rates supported by many implementations and applications. * @see FT_SetBaudRate */ #define FT_BAUD_300 300 #define FT_BAUD_600 600 #define FT_BAUD_1200 1200 #define FT_BAUD_2400 2400 #define FT_BAUD_4800 4800 #define FT_BAUD_9600 9600 #define FT_BAUD_14400 14400 #define FT_BAUD_19200 19200 #define FT_BAUD_38400 38400 #define FT_BAUD_57600 57600 #define FT_BAUD_115200 115200 #define FT_BAUD_230400 230400 #define FT_BAUD_460800 460800 #define FT_BAUD_921600 921600 /** @} */ /** @{ * @name Word Lengths * @see FT_SetDataCharacteristics */ #define FT_BITS_8 (UCHAR) 8 #define FT_BITS_7 (UCHAR) 7 /** @} */ /** @{ * @name Stop Bits * @see FT_SetDataCharacteristics */ #define FT_STOP_BITS_1 (UCHAR) 0 #define FT_STOP_BITS_2 (UCHAR) 2 /** @} */ /* * @name Parity * @see FT_SetDataCharacteristics * @{ */ #define FT_PARITY_NONE (UCHAR) 0 #define FT_PARITY_ODD (UCHAR) 1 #define FT_PARITY_EVEN (UCHAR) 2 #define FT_PARITY_MARK (UCHAR) 3 #define FT_PARITY_SPACE (UCHAR) 4 /** @} */ /** @{ * @name Flow Control * @see FT_SetFlowControl */ #define FT_FLOW_NONE 0x0000 #define FT_FLOW_RTS_CTS 0x0100 #define FT_FLOW_DTR_DSR 0x0200 #define FT_FLOW_XON_XOFF 0x0400 /** @} */ /** @{ * @name Purge rx and tx buffers * @see FT_Purge */ #define FT_PURGE_RX 1 #define FT_PURGE_TX 2 /** @} */ /** @{ * @name Events * @see FT_SetEventNotification */ typedef void(*PFT_EVENT_HANDLER)(DWORD, DWORD); #define FT_EVENT_RXCHAR 1 #define FT_EVENT_MODEM_STATUS 2 #define FT_EVENT_LINE_STATUS 4 /** @} */ /** @{ * @name Timeouts * @see FT_SetTimeouts */ #define FT_DEFAULT_RX_TIMEOUT 300 #define FT_DEFAULT_TX_TIMEOUT 300 /** @} */ /** @{ * @name Device Types * @details Known supported FTDI device types supported by this library. */ typedef ULONG FT_DEVICE; enum { FT_DEVICE_BM, FT_DEVICE_AM, FT_DEVICE_100AX, FT_DEVICE_UNKNOWN, FT_DEVICE_2232C, FT_DEVICE_232R, FT_DEVICE_2232H, FT_DEVICE_4232H, FT_DEVICE_232H, FT_DEVICE_X_SERIES, FT_DEVICE_4222H_0, FT_DEVICE_4222H_1_2, FT_DEVICE_4222H_3, FT_DEVICE_4222_PROG, FT_DEVICE_900, FT_DEVICE_930, FT_DEVICE_UMFTPD3A, FT_DEVICE_2233HP, FT_DEVICE_4233HP, FT_DEVICE_2232HP, FT_DEVICE_4232HP, FT_DEVICE_233HP, FT_DEVICE_232HP, FT_DEVICE_2232HA, FT_DEVICE_4232HA, }; /** @} */ /** @{ * @name Bit Modes * @see FT_SetBitMode FT_GetBitMode */ #define FT_BITMODE_RESET 0x00 #define FT_BITMODE_ASYNC_BITBANG 0x01 #define FT_BITMODE_MPSSE 0x02 #define FT_BITMODE_SYNC_BITBANG 0x04 #define FT_BITMODE_MCU_HOST 0x08 #define FT_BITMODE_FAST_SERIAL 0x10 #define FT_BITMODE_CBUS_BITBANG 0x20 #define FT_BITMODE_SYNC_FIFO 0x40 /** @} */ /** @{ * @name FT232R CBUS Options EEPROM values */ #define FT_232R_CBUS_TXDEN 0x00 // Tx Data Enable #define FT_232R_CBUS_PWRON 0x01 // Power On #define FT_232R_CBUS_RXLED 0x02 // Rx LED #define FT_232R_CBUS_TXLED 0x03 // Tx LED #define FT_232R_CBUS_TXRXLED 0x04 // Tx and Rx LED #define FT_232R_CBUS_SLEEP 0x05 // Sleep #define FT_232R_CBUS_CLK48 0x06 // 48MHz clock #define FT_232R_CBUS_CLK24 0x07 // 24MHz clock #define FT_232R_CBUS_CLK12 0x08 // 12MHz clock #define FT_232R_CBUS_CLK6 0x09 // 6MHz clock #define FT_232R_CBUS_IOMODE 0x0A // IO Mode for CBUS bit-bang #define FT_232R_CBUS_BITBANG_WR 0x0B // Bit-bang write strobe #define FT_232R_CBUS_BITBANG_RD 0x0C // Bit-bang read strobe #define FT_232R_CBUS0_RXF 0x0D // CBUS0 RXF# #define FT_232R_CBUS1_TXE 0x0D // CBUS1 TXE# #define FT_232R_CBUS2_RD 0x0D // CBUS2 RD# #define FT_232R_CBUS3_WR 0x0D // CBUS3 WR# /** @} */ /** @{ * @name FT232H CBUS Options EEPROM values */ #define FT_232H_CBUS_TRISTATE 0x00 // Tristate #define FT_232H_CBUS_TXLED 0x01 // Tx LED #define FT_232H_CBUS_RXLED 0x02 // Rx LED #define FT_232H_CBUS_TXRXLED 0x03 // Tx and Rx LED #define FT_232H_CBUS_PWREN 0x04 // Power Enable #define FT_232H_CBUS_SLEEP 0x05 // Sleep #define FT_232H_CBUS_DRIVE_0 0x06 // Drive pin to logic 0 #define FT_232H_CBUS_DRIVE_1 0x07 // Drive pin to logic 1 #define FT_232H_CBUS_IOMODE 0x08 // IO Mode for CBUS bit-bang #define FT_232H_CBUS_TXDEN 0x09 // Tx Data Enable #define FT_232H_CBUS_CLK30 0x0A // 30MHz clock #define FT_232H_CBUS_CLK15 0x0B // 15MHz clock #define FT_232H_CBUS_CLK7_5 0x0C // 7.5MHz clock /** @} */ /** @{ * @name FT X Series CBUS Options EEPROM values */ #define FT_X_SERIES_CBUS_TRISTATE 0x00 // Tristate #define FT_X_SERIES_CBUS_TXLED 0x01 // Tx LED #define FT_X_SERIES_CBUS_RXLED 0x02 // Rx LED #define FT_X_SERIES_CBUS_TXRXLED 0x03 // Tx and Rx LED #define FT_X_SERIES_CBUS_PWREN 0x04 // Power Enable #define FT_X_SERIES_CBUS_SLEEP 0x05 // Sleep #define FT_X_SERIES_CBUS_DRIVE_0 0x06 // Drive pin to logic 0 #define FT_X_SERIES_CBUS_DRIVE_1 0x07 // Drive pin to logic 1 #define FT_X_SERIES_CBUS_IOMODE 0x08 // IO Mode for CBUS bit-bang #define FT_X_SERIES_CBUS_TXDEN 0x09 // Tx Data Enable #define FT_X_SERIES_CBUS_CLK24 0x0A // 24MHz clock #define FT_X_SERIES_CBUS_CLK12 0x0B // 12MHz clock #define FT_X_SERIES_CBUS_CLK6 0x0C // 6MHz clock #define FT_X_SERIES_CBUS_BCD_CHARGER 0x0D // Battery charger detected #define FT_X_SERIES_CBUS_BCD_CHARGER_N 0x0E // Battery charger detected inverted #define FT_X_SERIES_CBUS_I2C_TXE 0x0F // I2C Tx empty #define FT_X_SERIES_CBUS_I2C_RXF 0x10 // I2C Rx full #define FT_X_SERIES_CBUS_VBUS_SENSE 0x11 // Detect VBUS #define FT_X_SERIES_CBUS_BITBANG_WR 0x12 // Bit-bang write strobe #define FT_X_SERIES_CBUS_BITBANG_RD 0x13 // Bit-bang read strobe #define FT_X_SERIES_CBUS_TIMESTAMP 0x14 // Toggle output when a USB SOF token is received #define FT_X_SERIES_CBUS_KEEP_AWAKE 0x15 // /** @} */ /** @{ * @name Driver Types */ #define FT_DRIVER_TYPE_D2XX 0 #define FT_DRIVER_TYPE_VCP 1 /** @} */ /** @{ * @name FT_DEVICE_LIST_INFO_NODE Device Information Flags * @par Summary * These flags are used in the Flags member of FT_DEVICE_LIST_INFO_NODE to indicated the state of * the device and speed of the device. */ enum { FT_FLAGS_OPENED = 1, FT_FLAGS_HISPEED = 2 }; /** @} */ #ifdef __cplusplus extern "C" { #endif #ifdef FTD2XX_STATIC FTD2XX_API FT_STATUS WINAPI FT_Initialise( void ); FTD2XX_API void WINAPI FT_Finalise( void ); #endif // FTD2XX_STATIC /** * @name D2XX Classic Functions The functions listed in this section are compatible with all FTDI devices. */ /** @{ */ #ifndef _WIN32 /** @noop FT_SetVIDPID * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * @par Summary * A command to include a custom VID and PID combination within the internal device list table. * This will allow the driver to load for the specified VID and PID combination. * @param dwVID Device Vendor ID (VID) * @param dwPID Device Product ID (PID) * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * By default, the driver will support a limited set of VID and PID matched devices (VID 0x0403 * with PIDs for standard FTDI devices only). * @n In order to use the driver with other VID and PID combinations the FT_SetVIDPID function * must be used prior to calling FT_ListDevices, FT_Open, FT_OpenEx or FT_CreateDeviceInfoList. * @note Extra function for non-Windows platforms to compensate for lack of .INF file to specify * Vendor and Product IDs. */ FTD2XX_API FT_STATUS FT_SetVIDPID( DWORD dwVID, DWORD dwPID ); /** @noop FT_GetVIDPID * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * @par Summary * A command to retrieve the current VID and PID combination from within the internal device list table. * @param pdwVID Pointer to DWORD that will contain the internal VID * @param pdwPID Pointer to DWORD that will contain the internal PID * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * @note Extra function for non-Windows platforms to compensate for lack of .INF file to specify Vendor and Product IDs. * @see FT_SetVIDPID. */ FTD2XX_API FT_STATUS FT_GetVIDPID( DWORD * pdwVID, DWORD * pdwPID ); #endif // _WIN32 /** @noop FT_CreateDeviceInfoList * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function builds a device information list and returns the number of D2XX devices connected to the * system. The list contains information about both unopen and open devices. * @param lpdwNumDevs Pointer to unsigned long to store the number of devices connected. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * An application can use this function to get the number of devices attached to the system. It can then * allocate space for the device information list and retrieve the list using FT_GetDeviceInfoList or * FT_GetDeviceInfoDetail. * @n If the devices connected to the system change, the device info list will not be updated until * FT_CreateDeviceInfoList is called again. * @see FT_GetDeviceInfoList * @see FT_GetDeviceInfoDetail */ FTD2XX_API FT_STATUS WINAPI FT_CreateDeviceInfoList( LPDWORD lpdwNumDevs ); /** @noop FT_DEVICE_LIST_INFO_NODE * @par Summary * This structure is used for passing information about a device back from the FT_GetDeviceInfoList function. * @see FT_GetDeviceInfoList */ typedef struct _ft_device_list_info_node { ULONG Flags; ULONG Type; ULONG ID; DWORD LocId; char SerialNumber[16]; char Description[64]; FT_HANDLE ftHandle; } FT_DEVICE_LIST_INFO_NODE; /** @noop FT_GetDeviceInfoList * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function returns a device information list and the number of D2XX devices in the list. * @param *pDest Pointer to an array of FT_DEVICE_LIST_INFO_NODE structures. * @param lpdwNumDevs Pointer to the number of elements in the array. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function should only be called after calling FT_CreateDeviceInfoList. If the devices connected to the * system change, the device info list will not be updated until FT_CreateDeviceInfoList is called again. * Location ID information is not returned for devices that are open when FT_CreateDeviceInfoList is called. * Information is not available for devices which are open in other processes. In this case, the Flags * parameter of the FT_DEVICE_LIST_INFO_NODE will indicate that the device is open, but other fields will * be unpopulated. * @n The flag value is a 4-byte bit map containing miscellaneous data as defined Appendix A - Type * Definitions. Bit 0 (least significant bit) of this number indicates if the port is open (1) or closed (0). Bit 1 * indicates if the device is enumerated as a high-speed USB device (2) or a full-speed USB device (0). The * remaining bits (2 - 31) are reserved. * @n The array of FT_DEVICE_LIST_INFO_NODES contains all available data on each device. The structure of * FT_DEVICE_LIST_INFO_NODES is given in the Appendix. The storage for the list must be allocated by * the application. The number of devices returned by FT_CreateDeviceInfoList can be used to do this. * When programming in Visual Basic, LabVIEW or similar languages, FT_GetDeviceInfoDetail may be * required instead of this function. * @note Please note that Windows CE does not support location IDs. As such, the Location ID parameter in the * structure will be empty. * @see FT_CreateDeviceInfoList */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceInfoList( FT_DEVICE_LIST_INFO_NODE *pDest, LPDWORD lpdwNumDevs ); /** @noop FT_GetDeviceInfoDetail * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function returns an entry from the device information list. * @param dwIndex Index of the entry in the device info list. * @param lpdwFlags Pointer to unsigned long to store the flag value. * @param lpdwType Pointer to unsigned long to store device type. * @param lpdwID Pointer to unsigned long to store device ID. * @param lpdwLocId Pointer to unsigned long to store the device location ID. * @param lpSerialNumber Pointer to buffer to store device serial number as a nullterminated string. * @param lpDescription Pointer to buffer to store device description as a null-terminated string. * @param *pftHandle Pointer to a variable of type FT_HANDLE where the handle will be stored. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function should only be called after calling FT_CreateDeviceInfoList. If the devices connected to the * system change, the device info list will not be updated until FT_CreateDeviceInfoList is called again. * @n The index value is zero-based. * @n The flag value is a 4-byte bit map containing miscellaneous data as defined Appendix A - Type * Definitions. Bit 0 (least significant bit) of this number indicates if the port is open (1) or closed (0). Bit 1 * indicates if the device is enumerated as a high-speed USB device (2) or a full-speed USB device (0). The * remaining bits (2 - 31) are reserved. * @n Location ID information is not returned for devices that are open when FT_CreateDeviceInfoList is called. * Information is not available for devices which are open in other processes. In this case, the lpdwFlags * parameter will indicate that the device is open, but other fields will be unpopulated. * To return the whole device info list as an array of FT_DEVICE_LIST_INFO_NODE structures, use * FT_CreateDeviceInfoList. * @note Please note that Windows CE does not support location IDs. As such, the Location ID parameter in the * structure will be empty. * @see FT_CreateDeviceInfoList */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceInfoDetail( DWORD dwIndex, LPDWORD lpdwFlags, LPDWORD lpdwType, LPDWORD lpdwID, LPDWORD lpdwLocId, LPVOID lpSerialNumber, LPVOID lpDescription, FT_HANDLE *pftHandle ); /** @noop FT_ListDevices * @par Summary * Gets information concerning the devices currently connected. This function can return information such * as the number of devices connected, the device serial number and device description strings, and the * location IDs of connected devices. * @param pvArg1 Meaning depends on dwFlags. * @param pvArg2 Meaning depends on dwFlags. * @param dwFlags Determines format of returned information. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function can be used in a number of ways to return different types of information. A more powerful * way to get device information is to use the FT_CreateDeviceInfoList, FT_GetDeviceInfoList and * FT_GetDeviceInfoDetail functions as they return all the available information on devices. * In its simplest form, it can be used to return the number of devices currently connected. If * FT_LIST_NUMBER_ONLY bit is set in dwFlags, the parameter pvArg1 is interpreted as a pointer to a * DWORD location to store the number of devices currently connected. * @n It can be used to return device information: if FT_OPEN_BY_SERIAL_NUMBER bit is set in dwFlags, the * serial number string will be returned; if FT_OPEN_BY_DESCRIPTION bit is set in dwFlags, the product * description string will be returned; if FT_OPEN_BY_LOCATION bit is set in dwFlags, the Location ID will * be returned; if none of these bits is set, the serial number string will be returned by default. * @n It can be used to return device string information for a single device. If FT_LIST_BY_INDEX and * FT_OPEN_BY_SERIAL_NUMBER or FT_OPEN_BY_DESCRIPTION bits are set in dwFlags, the parameter * pvArg1 is interpreted as the index of the device, and the parameter pvArg2 is interpreted as a pointer to * a buffer to contain the appropriate string. Indexes are zero-based, and the error code * FT_DEVICE_NOT_FOUND is returned for an invalid index. * @n It can be used to return device string information for all connected devices. If FT_LIST_ALL and * FT_OPEN_BY_SERIAL_NUMBER or FT_OPEN_BY_DESCRIPTION bits are set in dwFlags, the parameter * pvArg1 is interpreted as a pointer to an array of pointers to buffers to contain the appropriate strings and * the parameter pvArg2 is interpreted as a pointer to a DWORD location to store the number of devices * currently connected. Note that, for pvArg1, the last entry in the array of pointers to buffers should be a * NULL pointer so the array will contain one more location than the number of devices connected. * @n The location ID of a device is returned if FT_LIST_BY_INDEX and FT_OPEN_BY_LOCATION bits are set in * dwFlags. In this case the parameter pvArg1 is interpreted as the index of the device, and the parameter * pvArg2 is interpreted as a pointer to a variable of type long to contain the location ID. Indexes are * zerobased, and the error code FT_DEVICE_NOT_FOUND is returned for an invalid index. Please note that * Windows CE and Linux do not support location IDs. * @n The location IDs of all connected devices are returned if FT_LIST_ALL and FT_OPEN_BY_LOCATION bits * are set in dwFlags. In this case, the parameter pvArg1 is interpreted as a pointer to an array of variables * of type long to contain the location IDs, and the parameter pvArg2 is interpreted as a pointer to a * DWORD location to store the number of devices currently connected. * @see FT_CreateDeviceInfoList * @see FT_GetDeviceInfoList * @see FT_GetDeviceInfoDetail */ FTD2XX_API FT_STATUS WINAPI FT_ListDevices( PVOID pvArg1, PVOID pvArg2, DWORD dwFlags ); /** @noop FT_Open * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Open the device and return a handle which will be used for subsequent accesses. * @param deviceNumber Index of the device to open. Indices are 0 based. * @param pHandle Pointer to a variable of type FT_HANDLE where the handle will be stored. This handle must * be used to access the device. * @return * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * Although this function can be used to open multiple devices by setting iDevice to 0, 1, 2 etc. there is no * ability to open a specific device. To open named devices, use the function FT_OpenEx. * @see FT_OpenEx. */ FTD2XX_API FT_STATUS WINAPI FT_Open( int deviceNumber, FT_HANDLE *pHandle ); /** @noop FT_OpenEx * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Open the specified device and return a handle that will be used for subsequent accesses. The device can * be specified by its serial number, device description or location. * @n This function can also be used to open multiple devices simultaneously. Multiple devices can be specified * by serial number, device description or location ID (location information derived from the physical * location of a device on USB). Location IDs for specific USB ports can be obtained using the utility * USBView and are given in hexadecimal format. Location IDs for devices connected to a system can be * obtained by calling FT_GetDeviceInfoList or FT_ListDevices with the appropriate flags. * @param pvArg1 Pointer to an argument whose type depends on the value of dwFlags. * It is normally be interpreted as a pointer to a null terminated string. * @param dwFlags FT_OPEN_BY_SERIAL_NUMBER, FT_OPEN_BY_DESCRIPTION or FT_OPEN_BY_LOCATION. * @param pHandle Pointer to a variable of type FT_HANDLE where the handle will be * stored. This handle must be used to access the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The parameter specified in pvArg1 depends on dwFlags: if dwFlags is FT_OPEN_BY_SERIAL_NUMBER, * pvArg1 is interpreted as a pointer to a null-terminated string that represents the serial number of the * device; if dwFlags is FT_OPEN_BY_DESCRIPTION, pvArg1 is interpreted as a pointer to a nullterminated * string that represents the device description; if dwFlags is FT_OPEN_BY_LOCATION, pvArg1 * is interpreted as a long value that contains the location ID of the device. Please note that Windows CE * and Linux do not support location IDs. * @n ftHandle is a pointer to a variable of type FT_HANDLE where the handle is to be stored. This handle must * be used to access the device. */ FTD2XX_API FT_STATUS WINAPI FT_OpenEx( PVOID pvArg1, DWORD dwFlags, FT_HANDLE *pHandle ); /** @noop FT_Close * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Close an open device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_Close( FT_HANDLE ftHandle ); /** @noop FT_Read * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read data from the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to the buffer that receives the data from the device. * @param dwBytesToRead Number of bytes to be read from the device. * @param lpdwBytesReturned Pointer to a variable of type DWORD which receives the number of * bytes read from the device. * @returns * FT_OK if successful, FT_IO_ERROR otherwise. $see FT_STATUS * @remarks * FT_Read always returns the number of bytes read in lpdwBytesReturned. * @n This function does not return until dwBytesToRead bytes have been read into the buffer. The number of * bytes in the receive queue can be determined by calling FT_GetStatus or FT_GetQueueStatus, and * passed to FT_Read as dwBytesToRead so that the function reads the device and returns immediately. * When a read timeout value has been specified in a previous call to FT_SetTimeouts, FT_Read returns * when the timer expires or dwBytesToRead have been read, whichever occurs first. If the timeout * occurred, FT_Read reads available data into the buffer and returns FT_OK. * @n An application should use the function return value and lpdwBytesReturned when processing the buffer. * If the return value is FT_OK, and lpdwBytesReturned is equal to dwBytesToRead then FT_Read has * completed normally. If the return value is FT_OK, and lpdwBytesReturned is less then dwBytesToRead * then a timeout has occurred and the read has been partially completed. Note that if a timeout occurred * and no data was read, the return value is still FT_OK. * @n A return value of FT_IO_ERROR suggests an error in the parameters of the function, or a fatal error like a * USB disconnect has occurred. */ FTD2XX_API FT_STATUS WINAPI FT_Read( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD dwBytesToRead, LPDWORD lpdwBytesReturned ); /** @noop FT_Write * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write data to the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to the buffer that contains the data to be written to the device. * @param dwBytesToWrite Number of bytes to write to the device. * @param lpdwBytesWritten Pointer to a variable of type DWORD which receives the number of * bytes written to the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_Write( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD dwBytesToWrite, LPDWORD lpdwBytesWritten ); /** @noop FT_SetBaudRate * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the baud rate for the device. * @param ftHandle Handle of the device. * @param dwBaudRate Baud rate. * @returns * FT_OK if successful, otherwise the return value is an FT error code */ FTD2XX_API FT_STATUS WINAPI FT_SetBaudRate( FT_HANDLE ftHandle, ULONG dwBaudRate ); /** @noop FT_SetDivisor * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the baud rate for the device. It is used to set non-standard baud rates. * @param ftHandle Handle of the device. * @param usDivisor Divisor. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is no longer required as FT_SetBaudRate will now automatically calculate the required * divisor for a requested baud rate. The application note "Setting baud rates for the FT8U232AM" is * available from the Application Notes section of the FTDI website describes how to calculate the divisor for * a non-standard baud rate. */ FTD2XX_API FT_STATUS WINAPI FT_SetDivisor( FT_HANDLE ftHandle, USHORT usDivisor ); /** @noop FT_SetDataCharacteristics * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the data characteristics for the device. * @param ftHandle Handle of the device. * @param uWordLength Number of bits per word - must be FT_BITS_8 or FT_BITS_7. * @param uStopBits Number of stop bits - must be FT_STOP_BITS_1 or FT_STOP_BITS_2. * @param uParity Parity - must be FT_PARITY_NONE, FT_PARITY_ODD, FT_PARITY_EVEN, * FT_PARITY_MARK or FT_PARITY SPACE. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetDataCharacteristics( FT_HANDLE ftHandle, UCHAR uWordLength, UCHAR uStopBits, UCHAR uParity ); /** @noop FT_SetTimeouts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the read and write timeouts for the device. * @param ftHandle Handle of the device. * @param dwReadTimeout Read timeout in milliseconds. * @param dwWriteTimeout Write timeout in milliseconds. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetTimeouts( FT_HANDLE ftHandle, ULONG dwReadTimeout, ULONG dwWriteTimeout ); /** @noop FT_SetFlowControl * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the flow control for the device. * @param ftHandle Handle of the device. * @param usFlowControl Must be one of FT_FLOW_NONE, FT_FLOW_RTS_CTS, FT_FLOW_DTR_DSR or * FT_FLOW_XON_XOFF. * @param uXonChar Character used to signal Xon. Only used if flow control is FT_FLOW_XON_XOFF. * @param uXoffChar Character used to signal Xoff. Only used if flow control is FT_FLOW_XON_XOFF. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetFlowControl( FT_HANDLE ftHandle, USHORT usFlowControl, UCHAR uXonChar, UCHAR uXoffChar ); /** @noop FT_SetDtr * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the Data Terminal Ready (DTR) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function asserts the Data Terminal Ready (DTR) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_SetDtr( FT_HANDLE ftHandle ); /** @noop FT_ClrDtr * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function clears the Data Terminal Ready (DTR) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function de-asserts the Data Terminal Ready (DTR) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_ClrDtr( FT_HANDLE ftHandle ); /** @noop FT_SetRts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the Request To Send (RTS) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function asserts the Request To Send (RTS) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_SetRts( FT_HANDLE ftHandle ); /** @noop FT_ClrRts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function clears the Request To Send (RTS) control signal. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function de-asserts the Request To Send (RTS) line of the device. */ FTD2XX_API FT_STATUS WINAPI FT_ClrRts( FT_HANDLE ftHandle ); /** @noop FT_GetModemStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the modem status and line status from the device. * @param ftHandle Handle of the device. * @param lpdwModemStatus Pointer to a variable of type DWORD which receives the modem * status and line status from the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The least significant byte of the lpdwModemStatus value holds the modem status. On Windows and * Windows CE, the line status is held in the second least significant byte of the lpdwModemStatus value. * @n The modem status is bit-mapped as follows: Clear To Send (CTS) = 0x10, Data Set Ready (DSR) = 0x20, * Ring Indicator (RI) = 0x40, Data Carrier Detect (DCD) = 0x80. * @n The line status is bit-mapped as follows: Overrun Error (OE) = 0x02, Parity Error (PE) = 0x04, Framing * Error (FE) = 0x08, Break Interrupt (BI) = 0x10. */ FTD2XX_API FT_STATUS WINAPI FT_GetModemStatus( FT_HANDLE ftHandle, ULONG *lpdwModemStatus ); /** @noop FT_GetQueueStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the number of bytes in the receive queue. * @param ftHandle Handle of the device. * @param lpdwAmountInRxQueue Pointer to a variable of type DWORD which receives the number of * bytes in the receive queue. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_GetQueueStatus( FT_HANDLE ftHandle, DWORD *lpdwAmountInRxQueue ); /** @noop FT_GetDeviceInfo * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Get device information for an open device. * @param ftHandle Handle of the device. * @param lpftDevice Pointer to unsigned long to store device type. * @param lpdwID Pointer to unsigned long to store device ID. * @param pcSerialNumber Pointer to buffer to store device serial number as a nullterminated string. * @param pcDescription Pointer to buffer to store device description as a null-terminated string. * @param pvDummy Reserved for future use - should be set to NULL. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to return the device type, device ID, device description and serial number. * The device ID is encoded in a DWORD - the most significant word contains the vendor ID, and the least * significant word contains the product ID. So the returned ID 0x04036001 corresponds to the device ID * VID_0403&PID_6001. */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceInfo( FT_HANDLE ftHandle, FT_DEVICE *lpftDevice, LPDWORD lpdwID, PCHAR pcSerialNumber, PCHAR pcDescription, LPVOID pvDummy ); #ifndef _WIN32 /** * @note Extra function for non-Windows platforms to compensate for lack of .INF file to specify Vendor and Product IDs. */ FTD2XX_API FT_STATUS WINAPI FT_GetDeviceLocId( FT_HANDLE ftHandle, LPDWORD lpdwLocId ); #endif // _WIN32 /** @noop FT_GetDriverVersion * @par Supported Operating Systems * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function returns the D2XX driver version number. * @param ftHandle Handle of the device. * @param lpdwDriverVersion Pointer to the driver version number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * A version number consists of major, minor and build version numbers contained in a 4-byte field * (unsigned long). Byte0 (least significant) holds the build version, Byte1 holds the minor version, and * Byte2 holds the major version. Byte3 is currently set to zero. * @n For example, driver version "2.04.06" is represented as 0x00020406. Note that a device has to be * opened before this function can be called. */ FTD2XX_API FT_STATUS WINAPI FT_GetDriverVersion( FT_HANDLE ftHandle, LPDWORD lpdwDriverVersion ); /** @noop FT_GetLibraryVersion * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @n * This function returns D2XX DLL or library version number. * @param lpdwDLLVersion Pointer to the DLL or library version number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * A version number consists of major, minor and build version numbers contained in a 4-byte field * (unsigned long). Byte0 (least significant) holds the build version, Byte1 holds the minor version, and * Byte2 holds the major version. Byte3 is currently set to zero. * @n For example, D2XX DLL version "3.01.15" is represented as 0x00030115. Note that this function does * not take a handle, and so it can be called without opening a device. */ FTD2XX_API FT_STATUS WINAPI FT_GetLibraryVersion( LPDWORD lpdwDLLVersion ); /** @noop FT_GetComPortNumber * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Retrieves the COM port associated with a device. * @param ftHandle Handle of the device. * @param lplComPortNumber Pointer to a variable of type LONG which receives the COM port number * associated with the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is only available when using the Windows CDM driver as both the D2XX and VCP drivers can * be installed at the same time. * @n If no COM port is associated with the device, lplComPortNumber will have a value of -1 */ FTD2XX_API FT_STATUS WINAPI FT_GetComPortNumber( FT_HANDLE ftHandle, LPLONG lplComPortNumber ); /** @noop FT_GetStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the device status including number of characters in the receive queue, number of characters in the * transmit queue, and the current event status. * @param ftHandle Handle of the device. * @param lpdwAmountInRxQueue Pointer to a variable of type DWORD which receives the number of characters in * the receive queue. * @param lpdwAmountInTxQueue Pointer to a variable of type DWORD which receives the number of characters in * the transmit queue. * @param lpdwEventStatus Pointer to a variable of type DWORD which receives the current state of * the event status. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * For an example of how to use this function, see the sample code in FT_SetEventNotification. */ FTD2XX_API FT_STATUS WINAPI FT_GetStatus( FT_HANDLE ftHandle, DWORD *lpdwAmountInRxQueue, DWORD *lpdwAmountInTxQueue, DWORD *lpdwEventStatus ); /** @noop FT_SetEventNotification * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Sets conditions for event notification. * @param ftHandle Handle of the device. * @param dwEventMask Conditions that cause the event to be set. * @param pvArg Interpreted as the handle of an event. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * An application can use this function to setup conditions which allow a thread to block until one of the * conditions is met. Typically, an application will create an event, call this function, then block on the * event. When the conditions are met, the event is set, and the application thread unblocked. * dwEventMask is a bit-map that describes the events the application is interested in. pvArg is interpreted * as the handle of an event which has been created by the application. If one of the event conditions is * met, the event is set. * @n If FT_EVENT_RXCHAR is set in dwEventMask, the event will be set when a character has been received * by the device. * @n If FT_EVENT_MODEM_STATUS is set in dwEventMask, the event will be set when a change in the modem * signals has been detected by the device. * @n If FT_EVENT_LINE_STATUS is set in dwEventMask, the event will be set when a change in the line status * has been detected by the device. */ FTD2XX_API FT_STATUS WINAPI FT_SetEventNotification( FT_HANDLE ftHandle, DWORD dwEventMask, PVOID pvArg ); /** @noop FT_SetChars * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the special characters for the device. * @param ftHandle Handle of the device. * @param uEventChar Event character. * @param uEventCharEnabled 0 if event character disabled, non-zero otherwise. * @param uErrorChar Error character. * @param uErrorCharEnabled 0 if error character disabled, non-zero otherwise. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function allows for inserting specified characters in the data stream to represent events firing or * errors occurring. */ FTD2XX_API FT_STATUS WINAPI FT_SetChars( FT_HANDLE ftHandle, UCHAR uEventChar, UCHAR uEventCharEnabled, UCHAR uErrorChar, UCHAR uErrorCharEnabled ); /** @noop FT_SetBreakOn * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Sets the BREAK condition for the device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code */ FTD2XX_API FT_STATUS WINAPI FT_SetBreakOn( FT_HANDLE ftHandle ); /** @noop FT_SetBreakOff * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Resets the BREAK condition for the device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_SetBreakOff( FT_HANDLE ftHandle ); /** @noop FT_Purge * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function purges receive and transmit buffers in the device. * @param ftHandle Handle of the device. * @param ulMask Combination of FT_PURGE_RX and FT_PURGE_TX. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_Purge( FT_HANDLE ftHandle, ULONG ulMask ); /** @noop FT_ResetDevice * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sends a reset command to the device. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. */ FTD2XX_API FT_STATUS WINAPI FT_ResetDevice( FT_HANDLE ftHandle ); /** @noop FT_ResetPort * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Send a reset command to the port. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to attempt to recover the port after a failure. It is not equivalent * to an unplug-replug event. For the equivalent of an unplug-replug event, use FT_CyclePort. * @see FT_CyclePort */ FTD2XX_API FT_STATUS WINAPI FT_ResetPort( FT_HANDLE ftHandle ); /** @noop FT_CyclePort * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Send a cycle command to the USB port. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The effect of this function is the same as disconnecting then reconnecting the device from * USB. Possible use of this function is situations where a fatal error has occurred and it is * difficult, or not possible, to recover without unplugging and replugging the USB cable. * This function can also be used after reprogramming the EEPROM to force the FTDI device to * read the new EEPROM contents which would otherwise require a physical disconnect-reconnect. * @n As the current session is not restored when the driver is reloaded, the application must * be able to recover after calling this function. It is ithe responisbility of the application * to close the handle after successfully calling FT_CyclePort. * @n For FT4232H, FT2232H and FT2232 devices, FT_CyclePort will only work under Windows XP and later. */ FTD2XX_API FT_STATUS WINAPI FT_CyclePort( FT_HANDLE ftHandle ); /** @noop FT_Rescan * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * This function can be of use when trying to recover devices programatically. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * Calling FT_Rescan is equivalent to clicking the "Scan for hardware changes" button in the Device * Manager. Only USB hardware is checked for new devices. All USB devices are scanned, not just FTDI * devices. */ FTD2XX_API FT_STATUS WINAPI FT_Rescan( void ); /** @noop FT_Reload * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * This function forces a reload of the driver for devices with a specific VID and PID combination. * @param wVID Vendor ID of the devices to reload the driver for. * @param wPID Product ID of the devices to reload the driver for. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * Calling FT_Reload forces the operating system to unload and reload the driver for the specified device * IDs. If the VID and PID parameters are null, the drivers for USB root hubs will be reloaded, causing all * USB devices connected to reload their drivers. Please note that this function will not work correctly on * 64-bit Windows when called from a 32-bit application. */ FTD2XX_API FT_STATUS WINAPI FT_Reload( WORD wVID, WORD wPID ); /** @noop FT_SetResetPipeRetryCount * @par Supported Operating Systems * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Set the ResetPipeRetryCount value. * @param ftHandle Handle of the device. * @param dwCount Unsigned long containing required ResetPipeRetryCount. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to set the ResetPipeRetryCount. ResetPipeRetryCount controls the maximum * number of times that the driver tries to reset a pipe on which an error has occurred. * ResetPipeRequestRetryCount defaults to 50. It may be necessary to increase this value in noisy * environments where a lot of USB errors occur. */ FTD2XX_API FT_STATUS WINAPI FT_SetResetPipeRetryCount( FT_HANDLE ftHandle, DWORD dwCount ); /** @noop FT_StopInTask * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Stops the driver's IN task. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to put the driver's IN task (read) into a wait state. It can be used in situations * where data is being received continuously, so that the device can be purged without more data being * received. It is used together with FT_RestartInTask which sets the IN task running again. * @see FT_RestartInTask */ FTD2XX_API FT_STATUS WINAPI FT_StopInTask( FT_HANDLE ftHandle ); /** @noop FT_RestartInTask * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Restart the driver's IN task. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function is used to restart the driver's IN task (read) after it has been stopped by a call to * FT_StopInTask. * @see FT_StopInTask */ FTD2XX_API FT_STATUS WINAPI FT_RestartInTask( FT_HANDLE ftHandle ); /** @noop FT_SetDeadmanTimeout * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function allows the maximum time in milliseconds that a USB request can remain outstanding to * be set. * @param ftHandle Handle of the device. * @param ulDeadmanTimeout Deadman timeout value in milliseconds. Default value is 5000. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The deadman timeout is referred to in application note AN232B-10 Advanced Driver Options from the * FTDI web site as the USB timeout. It is unlikely that this function will be required by most users. */ FTD2XX_API FT_STATUS WINAPI FT_SetDeadmanTimeout( FT_HANDLE ftHandle, ULONG ulDeadmanTimeout ); /** @noop FT_IoCtl * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_IoCtl( FT_HANDLE ftHandle, DWORD dwIoControlCode, LPVOID lpInBuf, DWORD nInBufSize, LPVOID lpOutBuf, DWORD nOutBufSize, LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped ); /** @noop FT_SetWaitMask * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_SetWaitMask( FT_HANDLE ftHandle, DWORD Mask ); /** @noop FT_WaitOnMask * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_WaitOnMask( FT_HANDLE ftHandle, DWORD *Mask ); /** @noop FT_GetEventStatus * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_GetEventStatus( FT_HANDLE ftHandle, DWORD *dwEventDWord ); /** @} */ /** @name EEPROM Programming Interface Functions * FTDI device EEPROMs can be both read and programmed using the functions listed in this section. * @n Please note the following information: * @li The Maximum length of the Manufacturer, ManufacturerId, Description and SerialNumber strings * is 48 words (1 word = 2 bytes). * @li The first two characters of the serial number are the manufacturer ID. * @li The Manufacturer string length plus the Description string length is less than or equal to 40 * characters with the following functions: FT_EE_Read, FT_EE_Program, FT_EE_ProgramEx, * FT_EEPROM_Read, FT_EEPROM_Program. * @li The serial number should be maximum 15 characters long on single port devices (eg FT232R, FT-X) * and 14 characters on multi port devices (eg FT2232H, FT4232H). If it is longer then it may be * truncated and will not have a null terminator. * For instance a serial number which is 15 characters long on a multi-port device will have an * effective serial number which is 16 characters long since the serial number is appended with the * channel identifier (A,B,etc). The buffer used to return the string from the API is only 16 * characters in size so the NULL termination will be lost. * @n If the serial number or description are too long in the EEPROM or configuration of a device then the * strings returned by FT_GetDeviceInfo and FT_ListDevices may not be NULL terminated */ /** @{ */ /** @noop FT_ReadEE * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read a value from an EEPROM location. * @param ftHandle Handle of the device. * @param dwWordOffset EEPROM location to read from. * @param lpwValue Pointer to the WORD value read from the EEPROM. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * EEPROMs for FTDI devices are organised by WORD, so each value returned is 16-bits wide. */ FTD2XX_API FT_STATUS WINAPI FT_ReadEE( FT_HANDLE ftHandle, DWORD dwWordOffset, LPWORD lpwValue ); /** @noop FT_WriteEE * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write a value to an EEPROM location. * @param ftHandle Handle of the device. * @param dwWordOffset EEPROM location to read from. * @param wValue The WORD value write to the EEPROM. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * EEPROMs for FTDI devices are organised by WORD, so each value written to the EEPROM is * 16-bits wide. */ FTD2XX_API FT_STATUS WINAPI FT_WriteEE( FT_HANDLE ftHandle, DWORD dwWordOffset, WORD wValue ); /** @noop FT_EraseEE * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Erases the device EEPROM. * @param ftHandle Handle of the device. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function will erase the entire contents of an EEPROM, including the user area. * Note that the FT232R and FT245R devices have an internal EEPROM that cannot be erased. */ FTD2XX_API FT_STATUS WINAPI FT_EraseEE( FT_HANDLE ftHandle ); /** * Structure to hold program data for FT_EE_Program, FT_EE_ProgramEx, FT_EE_Read * and FT_EE_ReadEx functions. * @see FT_EE_Read * @see FT_EE_ReadEx * @see FT_EE_Program * @see FT_EE_ProgramEx */ typedef struct ft_program_data { DWORD Signature1; /// Header - must be 0x00000000 DWORD Signature2; /// Header - must be 0xffffffff DWORD Version; /// Header - FT_PROGRAM_DATA version // 0 = original // 1 = FT2232 extensions // 2 = FT232R extensions // 3 = FT2232H extensions // 4 = FT4232H extensions // 5 = FT232H extensions WORD VendorId; /// 0x0403 WORD ProductId; /// 0x6001 char *Manufacturer; /// "FTDI" char *ManufacturerId; /// "FT" char *Description; /// "USB HS Serial Converter" char *SerialNumber; /// "FT000001" if fixed, or NULL WORD MaxPower; /// 0 < MaxPower <= 500 WORD PnP; /// 0 = disabled, 1 = enabled WORD SelfPowered; /// 0 = bus powered, 1 = self powered WORD RemoteWakeup; /// 0 = not capable, 1 = capable /// Rev4 (FT232B) extensions UCHAR Rev4; /// non-zero if Rev4 chip, zero otherwise UCHAR IsoIn; /// non-zero if in endpoint is isochronous UCHAR IsoOut; /// non-zero if out endpoint is isochronous UCHAR PullDownEnable; /// non-zero if pull down enabled UCHAR SerNumEnable; /// non-zero if serial number to be used UCHAR USBVersionEnable; /// non-zero if chip uses USBVersion WORD USBVersion; /// BCD (0x0200 => USB2) /// Rev 5 (FT2232) extensions UCHAR Rev5; /// non-zero if Rev5 chip, zero otherwise UCHAR IsoInA; /// non-zero if in endpoint is isochronous UCHAR IsoInB; /// non-zero if in endpoint is isochronous UCHAR IsoOutA; /// non-zero if out endpoint is isochronous UCHAR IsoOutB; /// non-zero if out endpoint is isochronous UCHAR PullDownEnable5; /// non-zero if pull down enabled UCHAR SerNumEnable5; /// non-zero if serial number to be used UCHAR USBVersionEnable5; /// non-zero if chip uses USBVersion WORD USBVersion5; /// BCD (0x0200 => USB2) UCHAR AIsHighCurrent; /// non-zero if interface is high current UCHAR BIsHighCurrent; /// non-zero if interface is high current UCHAR IFAIsFifo; /// non-zero if interface is 245 FIFO UCHAR IFAIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR IFAIsFastSer; /// non-zero if interface is Fast serial UCHAR AIsVCP; /// non-zero if interface is to use VCP drivers UCHAR IFBIsFifo; /// non-zero if interface is 245 FIFO UCHAR IFBIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR IFBIsFastSer; /// non-zero if interface is Fast serial UCHAR BIsVCP; /// non-zero if interface is to use VCP drivers /// Rev 6 (FT232R) extensions UCHAR UseExtOsc; /// Use External Oscillator UCHAR HighDriveIOs; /// High Drive I/Os UCHAR EndpointSize; /// Endpoint size UCHAR PullDownEnableR; /// non-zero if pull down enabled UCHAR SerNumEnableR; /// non-zero if serial number to be used UCHAR InvertTXD; /// non-zero if invert TXD UCHAR InvertRXD; /// non-zero if invert RXD UCHAR InvertRTS; /// non-zero if invert RTS UCHAR InvertCTS; /// non-zero if invert CTS UCHAR InvertDTR; /// non-zero if invert DTR UCHAR InvertDSR; /// non-zero if invert DSR UCHAR InvertDCD; /// non-zero if invert DCD UCHAR InvertRI; /// non-zero if invert RI UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control UCHAR RIsD2XX; /// non-zero if using D2XX driver /// Rev 7 (FT2232H) Extensions UCHAR PullDownEnable7; /// non-zero if pull down enabled UCHAR SerNumEnable7; /// non-zero if serial number to be used UCHAR ALSlowSlew; /// non-zero if AL pins have slow slew UCHAR ALSchmittInput; /// non-zero if AL pins are Schmitt input UCHAR ALDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR AHSlowSlew; /// non-zero if AH pins have slow slew UCHAR AHSchmittInput; /// non-zero if AH pins are Schmitt input UCHAR AHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BLSlowSlew; /// non-zero if BL pins have slow slew UCHAR BLSchmittInput; /// non-zero if BL pins are Schmitt input UCHAR BLDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BHSlowSlew; /// non-zero if BH pins have slow slew UCHAR BHSchmittInput; /// non-zero if BH pins are Schmitt input UCHAR BHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR IFAIsFifo7; /// non-zero if interface is 245 FIFO UCHAR IFAIsFifoTar7; /// non-zero if interface is 245 FIFO CPU target UCHAR IFAIsFastSer7; /// non-zero if interface is Fast serial UCHAR AIsVCP7; /// non-zero if interface is to use VCP drivers UCHAR IFBIsFifo7; /// non-zero if interface is 245 FIFO UCHAR IFBIsFifoTar7; /// non-zero if interface is 245 FIFO CPU target UCHAR IFBIsFastSer7; /// non-zero if interface is Fast serial UCHAR BIsVCP7; /// non-zero if interface is to use VCP drivers UCHAR PowerSaveEnable; /// non-zero if using BCBUS7 to save power for self-powered designs /// Rev 8 (FT4232H) Extensions UCHAR PullDownEnable8; /// non-zero if pull down enabled UCHAR SerNumEnable8; /// non-zero if serial number to be used UCHAR ASlowSlew; /// non-zero if A pins have slow slew UCHAR ASchmittInput; /// non-zero if A pins are Schmitt input UCHAR ADriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BSlowSlew; /// non-zero if B pins have slow slew UCHAR BSchmittInput; /// non-zero if B pins are Schmitt input UCHAR BDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR CSlowSlew; /// non-zero if C pins have slow slew UCHAR CSchmittInput; /// non-zero if C pins are Schmitt input UCHAR CDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR DSlowSlew; /// non-zero if D pins have slow slew UCHAR DSchmittInput; /// non-zero if D pins are Schmitt input UCHAR DDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ARIIsTXDEN; /// non-zero if port A uses RI as RS485 TXDEN UCHAR BRIIsTXDEN; /// non-zero if port B uses RI as RS485 TXDEN UCHAR CRIIsTXDEN; /// non-zero if port C uses RI as RS485 TXDEN UCHAR DRIIsTXDEN; /// non-zero if port D uses RI as RS485 TXDEN UCHAR AIsVCP8; /// non-zero if interface is to use VCP drivers UCHAR BIsVCP8; /// non-zero if interface is to use VCP drivers UCHAR CIsVCP8; /// non-zero if interface is to use VCP drivers UCHAR DIsVCP8; /// non-zero if interface is to use VCP drivers /// Rev 9 (FT232H) Extensions UCHAR PullDownEnableH; /// non-zero if pull down enabled UCHAR SerNumEnableH; /// non-zero if serial number to be used UCHAR ACSlowSlewH; /// non-zero if AC pins have slow slew UCHAR ACSchmittInputH; /// non-zero if AC pins are Schmitt input UCHAR ACDriveCurrentH; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ADSlowSlewH; /// non-zero if AD pins have slow slew UCHAR ADSchmittInputH; /// non-zero if AD pins are Schmitt input UCHAR ADDriveCurrentH; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR Cbus0H; /// Cbus Mux control UCHAR Cbus1H; /// Cbus Mux control UCHAR Cbus2H; /// Cbus Mux control UCHAR Cbus3H; /// Cbus Mux control UCHAR Cbus4H; /// Cbus Mux control UCHAR Cbus5H; /// Cbus Mux control UCHAR Cbus6H; /// Cbus Mux control UCHAR Cbus7H; /// Cbus Mux control UCHAR Cbus8H; /// Cbus Mux control UCHAR Cbus9H; /// Cbus Mux control UCHAR IsFifoH; /// non-zero if interface is 245 FIFO UCHAR IsFifoTarH; /// non-zero if interface is 245 FIFO CPU target UCHAR IsFastSerH; /// non-zero if interface is Fast serial UCHAR IsFT1248H; /// non-zero if interface is FT1248 UCHAR FT1248CpolH; /// FT1248 clock polarity - clock idle high (1) or clock idle low (0) UCHAR FT1248LsbH; /// FT1248 data is LSB (1) or MSB (0) UCHAR FT1248FlowControlH; /// FT1248 flow control enable UCHAR IsVCPH; /// non-zero if interface is to use VCP drivers UCHAR PowerSaveEnableH; /// non-zero if using ACBUS7 to save power for self-powered designs } FT_PROGRAM_DATA, *PFT_PROGRAM_DATA; /** @noop FT_EE_Read * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read the contents of the EEPROM. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA * that contains storage for the data to be read from the EEPROM. * @n The function does not perform any checks on buffer sizes, so the buffers passed in the * FT_PROGRAM_DATA structure must be big enough to accommodate their respective strings (including * null terminators). The sizes shown in the following example are more than adequate and can be rounded * down if necessary. The restriction is that the Manufacturer string length plus the Description string * length is less than or equal to 40 characters. * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being used. * This is done through the Signature1, Signature2 and Version elements of the structure. Signature1 * should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be set to use * whichever version is required. For compatibility with all current devices Version should be set to the * latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * @see FT_PROGRAM_DATA * */ FTD2XX_API FT_STATUS WINAPI FT_EE_Read( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData ); /** @noop FT_EE_ReadEx * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read the contents of the EEPROM and pass strings separately. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This variation of the standard FT_EE_Read function was included to provide support for languages such * as LabVIEW where problems can occur when string pointers are contained in a structure. * @n This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA that * contains storage for the data to be read from the EEPROM. * @n The function does not perform any checks on buffer sizes, so the buffers passed in the * FT_PROGRAM_DATA structure must be big enough to accommodate their respective strings (including * null terminators). * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being used. * This is done through the Signature1, Signature2 and Version elements of the structure. Signature1 * should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be set to use * whichever version is required. For compatibility with all current devices Version should be set to the * latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * @n The string parameters in the FT_PROGRAM_DATA structure should be passed as DWORDs to avoid * overlapping of parameters. All string pointers are passed out separately from the FT_PROGRAM_DATA * structure. * @see FT_PROGRAM_DATA * */ FTD2XX_API FT_STATUS WINAPI FT_EE_ReadEx( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @noop FT_EE_Program * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Program the EEPROM. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA * that contains the data to write to the EEPROM. The data is written to EEPROM, then read back and * verified. * @n If the SerialNumber field in FT_PROGRAM_DATA is NULL, or SerialNumber points to a NULL string, * a serial number based on the ManufacturerId and the current date and time will be generated. The * Manufacturer string length plus the Description string length must be less than or equal to 40 * characters. * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being * used. This is done through the Signature1, Signature2 and Version elements of the structure. * Signature1 should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be * set to use whichever version is required. For compatibility with all current devices Version * should be set to the latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * If pData is NULL, the structure version will default to 0 (original BM series) and the device will * be programmed with the default data. * @see FT_PROGRAM_DATA */ FTD2XX_API FT_STATUS WINAPI FT_EE_Program( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData ); /** @noop FT_EE_ProgramEx * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Program the EEPROM and pass strings separately. * @param ftHandle Handle of the device. * @param pData Pointer to structure of type FT_PROGRAM_DATA. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This variation of the FT_EE_Program function was included to provide support for languages such * as LabVIEW where problems can occur when string pointers are contained in a structure. * @n This function interprets the parameter pData as a pointer to a structure of type FT_PROGRAM_DATA * that contains the data to write to the EEPROM. The data is written to EEPROM, then read back and * verified. The string pointer parameters in the FT_PROGRAM_DATA structure should be allocated as * DWORDs to avoid overlapping of parameters. The string parameters are then passed in separately. * @n If the SerialNumber field is NULL, or SerialNumber points to a NULL string, a serial number based * on the ManufacturerId and the current date and time will be generated. The Manufacturer string * length plus the Description string length must be less than or equal to 40 characters. * @note Note that the DLL must be informed which version of the FT_PROGRAM_DATA structure is being used. * This is done through the Signature1, Signature2 and Version elements of the structure. Signature1 * should always be 0x00000000, Signature2 should always be 0xFFFFFFFF and Version can be set to use * whichever version is required. For compatibility with all current devices Version should be set to the * latest version of the FT_PROGRAM_DATA structure which is defined in FTD2XX.h. * If pData is NULL, the structure version will default to 0 (original BM series) and the device will be * programmed with the default data. * @see FT_PROGRAM_DATA */ FTD2XX_API FT_STATUS WINAPI FT_EE_ProgramEx( FT_HANDLE ftHandle, PFT_PROGRAM_DATA pData, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @noop FT_EE_UASize * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Get the available size of the EEPROM user area. * @param ftHandle Handle of the device. * @param lpdwSize Pointer to a DWORD that receives the available size, in bytes, of the EEPROM * user area. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * The user area of an FTDI device EEPROM is the total area of the EEPROM that is unused by device * configuration information and descriptors. This area is available to the user to store information * specific to their application. The size of the user area depends on the length of the Manufacturer, * ManufacturerId, Description and SerialNumber strings programmed into the EEPROM. */ FTD2XX_API FT_STATUS WINAPI FT_EE_UASize( FT_HANDLE ftHandle, LPDWORD lpdwSize ); /** @noop FT_EE_UARead * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read the contents of the EEPROM user area. * @param ftHandle Handle of the device. * @param pucData Pointer to a buffer that contains storage for data to be read. * @param dwDataLen Size, in bytes, of buffer that contains storage for the data to be read. * @param lpdwBytesRead Pointer to a DWORD that receives the number of bytes read. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pucData as a pointer to an array of bytes of size * dwDataLen that contains storage for the data to be read from the EEPROM user area. The actual * number of bytes read is stored in the DWORD referenced by lpdwBytesRead. * @n If dwDataLen is less than the size of the EEPROM user area, then dwDataLen bytes are read * into the buffer. Otherwise, the whole of the EEPROM user area is read into the buffer. The * available user area size can be determined by calling FT_EE_UASize. * @n An application should check the function return value and lpdwBytesRead when FT_EE_UARead * returns. */ FTD2XX_API FT_STATUS WINAPI FT_EE_UARead( FT_HANDLE ftHandle, PUCHAR pucData, DWORD dwDataLen, LPDWORD lpdwBytesRead ); /** @noop FT_EE_UAWrite * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write data into the EEPROM user area. * @param ftHandle Handle of the device. * @param pucData Pointer to a buffer that contains the data to be written. * @param dwDataLen Size, in bytes, of buffer that contains storage for the data to be read. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter pucData as a pointer to an array of bytes of size * dwDataLen that contains the data to be written to the EEPROM user area. It is a programming * error for dwDataLen to be greater than the size of the EEPROM user area. The available user * area size can be determined by calling FT_EE_UASize. */ FTD2XX_API FT_STATUS WINAPI FT_EE_UAWrite( FT_HANDLE ftHandle, PUCHAR pucData, DWORD dwDataLen ); /** @noop FT_EEPROM_HEADER * @par Summary * Structure to hold data for FT_EEPROM_Program and FT_EEPROM_Read functions. * The structure for the command includes one FT_EEPROM_HEADER with a device-specific * structure appended. * @see FT_EEPROM_Read * @see FT_EEPROM_Program */ typedef struct ft_eeprom_header { FT_DEVICE deviceType; /// FTxxxx device type to be programmed /// Device descriptor options WORD VendorId; /// 0x0403 WORD ProductId; /// 0x6001 UCHAR SerNumEnable; /// non-zero if serial number to be used /// Config descriptor options WORD MaxPower; /// 0 < MaxPower <= 500 UCHAR SelfPowered; /// 0 = bus powered, 1 = self powered UCHAR RemoteWakeup; /// 0 = not capable, 1 = capable /// Hardware options UCHAR PullDownEnable; /// non-zero if pull down in suspend enabled } FT_EEPROM_HEADER, *PFT_EEPROM_HEADER; /** @noop FT_EEPROM_232B * @par Summary * Structure to hold data for the FT232B data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_232b { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs } FT_EEPROM_232B, *PFT_EEPROM_232B; /** @noop FT_EEPROM_2232 * @par Summary * Structure to hold data for the FT2232C, FT2232D and FT2232L data in the FT_EEPROM_Program * and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_2232 { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR AIsHighCurrent; /// non-zero if interface is high current UCHAR BIsHighCurrent; /// non-zero if interface is high current /// Hardware options UCHAR AIsFifo; /// non-zero if interface is 245 FIFO UCHAR AIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR AIsFastSer; /// non-zero if interface is Fast serial UCHAR BIsFifo; /// non-zero if interface is 245 FIFO UCHAR BIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR BIsFastSer; /// non-zero if interface is Fast serial /// Driver option UCHAR ADriverType; /// non-zero if interface is to use VCP drivers UCHAR BDriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_2232, *PFT_EEPROM_2232; /** @noop FT_EEPROM_232R * @par Summary * Structure to hold data for the FT232R data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_232r { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR IsHighCurrent; /// non-zero if interface is high current /// Hardware options UCHAR UseExtOsc; /// Use External Oscillator UCHAR InvertTXD; /// non-zero if invert TXD UCHAR InvertRXD; /// non-zero if invert RXD UCHAR InvertRTS; /// non-zero if invert RTS UCHAR InvertCTS; /// non-zero if invert CTS UCHAR InvertDTR; /// non-zero if invert DTR UCHAR InvertDSR; /// non-zero if invert DSR UCHAR InvertDCD; /// non-zero if invert DCD UCHAR InvertRI; /// non-zero if invert RI UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control /// Driver option UCHAR DriverType; /// non-zero if using D2XX driver } FT_EEPROM_232R, *PFT_EEPROM_232R; /** @noop FT_EEPROM_2232H * @par Summary * Structure to hold data for the FT2232H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_2232h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ALSlowSlew; /// non-zero if AL pins have slow slew UCHAR ALSchmittInput; /// non-zero if AL pins are Schmitt input UCHAR ALDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR AHSlowSlew; /// non-zero if AH pins have slow slew UCHAR AHSchmittInput; /// non-zero if AH pins are Schmitt input UCHAR AHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BLSlowSlew; /// non-zero if BL pins have slow slew UCHAR BLSchmittInput; /// non-zero if BL pins are Schmitt input UCHAR BLDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BHSlowSlew; /// non-zero if BH pins have slow slew UCHAR BHSchmittInput; /// non-zero if BH pins are Schmitt input UCHAR BHDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// Hardware options UCHAR AIsFifo; /// non-zero if interface is 245 FIFO UCHAR AIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR AIsFastSer; /// non-zero if interface is Fast serial UCHAR BIsFifo; /// non-zero if interface is 245 FIFO UCHAR BIsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR BIsFastSer; /// non-zero if interface is Fast serial UCHAR PowerSaveEnable; /// non-zero if using BCBUS7 to save power for self-powered designs /// Driver option UCHAR ADriverType; /// non-zero if interface is to use VCP drivers UCHAR BDriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_2232H, *PFT_EEPROM_2232H; /** @noop FT_EEPROM_4232H * @par Summary * Structure to hold data for the FT4232H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_4232h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ASlowSlew; /// non-zero if A pins have slow slew UCHAR ASchmittInput; /// non-zero if A pins are Schmitt input UCHAR ADriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR BSlowSlew; /// non-zero if B pins have slow slew UCHAR BSchmittInput; /// non-zero if B pins are Schmitt input UCHAR BDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR CSlowSlew; /// non-zero if C pins have slow slew UCHAR CSchmittInput; /// non-zero if C pins are Schmitt input UCHAR CDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR DSlowSlew; /// non-zero if D pins have slow slew UCHAR DSchmittInput; /// non-zero if D pins are Schmitt input UCHAR DDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// Hardware options UCHAR ARIIsTXDEN; /// non-zero if port A uses RI as RS485 TXDEN UCHAR BRIIsTXDEN; /// non-zero if port B uses RI as RS485 TXDEN UCHAR CRIIsTXDEN; /// non-zero if port C uses RI as RS485 TXDEN UCHAR DRIIsTXDEN; /// non-zero if port D uses RI as RS485 TXDEN /// Driver option UCHAR ADriverType; /// non-zero if interface is to use VCP drivers UCHAR BDriverType; /// non-zero if interface is to use VCP drivers UCHAR CDriverType; /// non-zero if interface is to use VCP drivers UCHAR DDriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_4232H, *PFT_EEPROM_4232H; /** @noop FT_EEPROM_232H * @par Summary * Structure to hold data for the FT232H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_232h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ACSlowSlew; /// non-zero if AC bus pins have slow slew UCHAR ACSchmittInput; /// non-zero if AC bus pins are Schmitt input UCHAR ACDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ADSlowSlew; /// non-zero if AD bus pins have slow slew UCHAR ADSchmittInput; /// non-zero if AD bus pins are Schmitt input UCHAR ADDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// CBUS options UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control UCHAR Cbus5; /// Cbus Mux control UCHAR Cbus6; /// Cbus Mux control UCHAR Cbus7; /// Cbus Mux control UCHAR Cbus8; /// Cbus Mux control UCHAR Cbus9; /// Cbus Mux control /// FT1248 options UCHAR FT1248Cpol; /// FT1248 clock polarity - clock idle high (1) or clock idle low (0) UCHAR FT1248Lsb; /// FT1248 data is LSB (1) or MSB (0) UCHAR FT1248FlowControl; /// FT1248 flow control enable /// Hardware options UCHAR IsFifo; /// non-zero if interface is 245 FIFO UCHAR IsFifoTar; /// non-zero if interface is 245 FIFO CPU target UCHAR IsFastSer; /// non-zero if interface is Fast serial UCHAR IsFT1248; /// non-zero if interface is FT1248 UCHAR PowerSaveEnable; /// /// Driver option UCHAR DriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_232H, *PFT_EEPROM_232H; /** @noop FT_EEPROM_X_SERIES * @par Summary * Structure to hold data for the FT-X series data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_x_series { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs /// Drive options UCHAR ACSlowSlew; /// non-zero if AC bus pins have slow slew UCHAR ACSchmittInput; /// non-zero if AC bus pins are Schmitt input UCHAR ACDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR ADSlowSlew; /// non-zero if AD bus pins have slow slew UCHAR ADSchmittInput; /// non-zero if AD bus pins are Schmitt input UCHAR ADDriveCurrent; /// valid values are 4mA, 8mA, 12mA, 16mA /// CBUS options UCHAR Cbus0; /// Cbus Mux control UCHAR Cbus1; /// Cbus Mux control UCHAR Cbus2; /// Cbus Mux control UCHAR Cbus3; /// Cbus Mux control UCHAR Cbus4; /// Cbus Mux control UCHAR Cbus5; /// Cbus Mux control UCHAR Cbus6; /// Cbus Mux control /// UART signal options UCHAR InvertTXD; /// non-zero if invert TXD UCHAR InvertRXD; /// non-zero if invert RXD UCHAR InvertRTS; /// non-zero if invert RTS UCHAR InvertCTS; /// non-zero if invert CTS UCHAR InvertDTR; /// non-zero if invert DTR UCHAR InvertDSR; /// non-zero if invert DSR UCHAR InvertDCD; /// non-zero if invert DCD UCHAR InvertRI; /// non-zero if invert RI /// Battery Charge Detect options UCHAR BCDEnable; /// Enable Battery Charger Detection UCHAR BCDForceCbusPWREN; /// asserts the power enable signal on CBUS when charging port detected UCHAR BCDDisableSleep; /// forces the device never to go into sleep mode /// I2C options WORD I2CSlaveAddress; /// I2C slave device address DWORD I2CDeviceId; /// I2C device ID UCHAR I2CDisableSchmitt; /// Disable I2C Schmitt trigger /// FT1248 options UCHAR FT1248Cpol; /// FT1248 clock polarity - clock idle high (1) or clock idle low (0) UCHAR FT1248Lsb; /// FT1248 data is LSB (1) or MSB (0) UCHAR FT1248FlowControl; /// FT1248 flow control enable /// Hardware options UCHAR RS485EchoSuppress; /// UCHAR PowerSaveEnable; /// /// Driver option UCHAR DriverType; /// non-zero if interface is to use VCP drivers } FT_EEPROM_X_SERIES, *PFT_EEPROM_X_SERIES; /** @noop FT_EEPROM_4222H * @par Summary * Structure to hold data for the FT4222H data in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER structure. * @see FT_EEPROM_HEADER */ typedef struct ft_eeprom_4222h { /// Common header FT_EEPROM_HEADER common; /// common elements for all device EEPROMs CHAR Revision; /// 'A', 'B', 'C', or 'D'. UCHAR I2C_Slave_Address; /// Suspend UCHAR SPISuspend; /// 0 for "Disable SPI, tristate pins", 2 for "Keep SPI pin status", 3 for "Enable SPI pin control" UCHAR SuspendOutPol; /// 0 for negative, 1 for positive (not implemented on Rev A) UCHAR EnableSuspendOut; /// non-zero to enable (not implemented on Rev A) /// QSPI UCHAR Clock_SlowSlew; /// non-zero if clock pin has slow slew UCHAR Clock_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR IO0_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR IO1_SlowSlew; /// non-zero if IO1 pin has slow slew UCHAR IO2_SlowSlew; /// non-zero if IO2 pin has slow slew UCHAR IO3_SlowSlew; /// non-zero if IO3 pin has slow slew UCHAR IO_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR SlaveSelect_PullUp; /// non-zero to enable pull up UCHAR SlaveSelect_PullDown; /// non-zero to enable pull down UCHAR SlaveSelect_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR SlaveSelect_SlowSlew; /// non-zero if slave select pin has slow slew UCHAR MISO_Suspend; /// 2 for push-low, 3 for push high, 0 and 1 reserved UCHAR SIMO_Suspend; /// 2 for push-low, 3 for push high, 0 and 1 reserved UCHAR IO2_IO3_Suspend; /// 2 for push-low, 3 for push high, 0 and 1 reserved UCHAR SlaveSelect_Suspend; /// 0 for no-change (not implemented on Rev A), 2 for push-low, 3 for push high, 1 reserved /// GPIO UCHAR GPIO0_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO1_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO2_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO3_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA UCHAR GPIO0_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO1_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO2_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO3_SlowSlew; /// non-zero if IO0 pin has slow slew UCHAR GPIO0_PullDown; /// non-zero to enable pull down UCHAR GPIO1_PullDown; /// non-zero to enable pull down UCHAR GPIO2_PullDown; /// non-zero to enable pull down UCHAR GPIO3_PullDown; /// non-zero to enable pull down UCHAR GPIO0_PullUp; /// non-zero to enable pull up UCHAR GPIO1_PullUp; /// non-zero to enable pull up UCHAR GPIO2_PullUp; /// non-zero to enable pull up UCHAR GPIO3_PullUp; /// non-zero to enable pull up UCHAR GPIO0_OpenDrain; /// non-zero to enable open drain UCHAR GPIO1_OpenDrain; /// non-zero to enable open drain UCHAR GPIO2_OpenDrain; /// non-zero to enable open drain UCHAR GPIO3_OpenDrain; /// non-zero to enable open drain UCHAR GPIO0_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR GPIO1_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR GPIO2_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR GPIO3_Suspend; /// 0 for no-change, 1 for input (not implemented on Rev A), 2 for push-low, 3 for push high UCHAR FallingEdge; /// non-zero to change GPIO on falling edge /// BCD UCHAR BCD_Disable; /// non-zero to disable BCD UCHAR BCD_OutputActiveLow; /// non-zero to set BCD output active low UCHAR BCD_Drive; /// valid values are 4mA, 8mA, 12mA, 16mA } FT_EEPROM_4222H, *PFT_EEPROM_4222H; /** @noop FT_EEPROM_PD_PDO_mv_ma * @par Summary * Structure to hold PDO Configuration structure, mA supported values 0 to 10230mA, mV supported * values 0 to 51100mV. This is part of the FT_EEPROM_PD structure. * @see FT_EEPROM_PD */ typedef struct ft_eeprom_PD_PDO_mv_ma { USHORT PDO1ma; /// PDO1 mA USHORT PDO1mv; /// PDO1 mV USHORT PDO2ma; /// PDO2 mA USHORT PDO2mv; /// PDO2 mV USHORT PDO3ma; /// PDO3 mA USHORT PDO3mv; /// PDO3 mV USHORT PDO4ma; /// PDO4 mA USHORT PDO4mv; /// PDO4 mV USHORT PDO5ma; /// PDO5 mA (FTx233HP only) USHORT PDO5mv; /// PDO5 mV (FTx233HP only) USHORT PDO6ma; /// PDO6 mA (FTx233HP only) USHORT PDO6mv; /// PDO6 mV (FTx233HP only) USHORT PDO7ma; /// PDO7 mA (FTx233HP only) USHORT PDO7mv; /// PDO7 mV (FTx233HP only) } FT_EEPROM_PD_PDO_mv_ma; /** @noop FT_EEPROM_PD * @par Summary * Structure to hold power delivery configuration data for the FT4233PD, FT2233PD, FT4232PD, * FT2232PD, FT233PD and FT232PD in the FT_EEPROM_Program and FT_EEPROM_Read functions. * This is appended to an FT_EEPROM_HEADER and a base device structure. * e_g. @verbatim * struct { * FT_EEPROM_xxx base; * FT_EEPROM_PD pd; * }; * @endverbatim * @remarks * Device GPIO values are: * @li FTx233HP - 0 to 7, 15 for N/A * @li FTx232HP - 0 to 3, 15 for N/A * @see FT_EEPROM_HEADER * @see FT_EEPROM_PD_PDO_mv_ma */ typedef struct ft_eeprom_pd { /// Configuration UCHAR srprs; /// non-zero to enable Sink Request Power Role Swap UCHAR sraprs; /// non-zero to enable Sink Accept PR Swap UCHAR srrprs; /// non-zero to enable Source Request PR SWAP UCHAR saprs; /// non-zero to enable Source Accept PR SWAP UCHAR vconns; /// non-zero to enable vConn Swap UCHAR passthru; /// non-zero to enable Pass Through (FTx233HP only) UCHAR extmcu; /// non-zero to enable External MCU UCHAR pd2en; /// non-zero to enable PD2 (FTx233HP only) UCHAR pd1autoclk; /// non-zero to enable PD1 Auto Clock UCHAR pd2autoclk; /// non-zero to enable PD2 Auto Clock (FTx233HP only) UCHAR useefuse; /// non-zero to Use EFUSE UCHAR extvconn; /// non-zero to enable External vConn /// GPIO Configuration UCHAR count; /// GPIO Count, supported values are 0 to 7 UCHAR gpio1; /// GPIO Number 1, supports device GPIO values UCHAR gpio2; /// GPIO Number 2, supports device GPIO values UCHAR gpio3; /// GPIO Number 3, supports device GPIO values UCHAR gpio4; /// GPIO Number 4, supports device GPIO values UCHAR gpio5; /// GPIO Number 5, supports device GPIO values (FTx233HP only) UCHAR gpio6; /// GPIO Number 6, supports device GPIO values (FTx233HP only) UCHAR gpio7; /// GPIO Number 7, supports device GPIO values (FTx233HP only) UCHAR pd1lden; /// PD1 Load Enable, supports device GPIO values UCHAR pd2lden; /// PD2 Load Enable, supports device GPIO values (FTx233HP only) UCHAR dispin; /// Discharge Pin, supports device GPIO values UCHAR disenbm; /// Discharge Enable BM, 0 for "Drive Hi", 1 for "Drive Low", 2 for "Input Mode", 3 for "Don't Care" UCHAR disdisbm; /// Discharge Disable BM, 0 for "Drive Hi", 1 for "Drive Low", 2 for "Input Mode", 3 for "Don't Care" UCHAR ccselect; /// CC Select Indicator, supports device GPIO values /// ISET Configuration UCHAR iset1; /// ISET1, supports device GPIO values UCHAR iset2; /// ISET2, supports device GPIO values UCHAR iset3; /// ISET3, supports device GPIO values UCHAR extiset; /// non-zero to enable EXTEND_ISET UCHAR isetpd2; /// non-zero to enable ISET_PD2 UCHAR iseten; /// non-zero to set ISET_ENABLED /// BM Configuration, 0 for "Drive Hi", 1 for "Drive Low", 2 for "Input Mode", 3 for "Don't Care" UCHAR PDO1_GPIO[7]; /// PDO1 GPIO1 to GPIO7 UCHAR PDO2_GPIO[7]; /// PDO2 GPIO1 to GPIO7 UCHAR PDO3_GPIO[7]; /// PDO3 GPIO1 to GPIO7 UCHAR PDO4_GPIO[7]; /// PDO4 GPIO1 to GPIO7 UCHAR PDO5_GPIO[7]; /// PDO5 GPIO1 to GPIO7 (FTx233HP only) UCHAR PDO6_GPIO[7]; /// PDO6 GPIO1 to GPIO7 (FTx233HP only) UCHAR PDO7_GPIO[7]; /// PDO7 GPIO1 to GPIO7 (FTx233HP only) UCHAR VSET0V_GPIO[7]; /// PDO7 GPIO1 to GPIO7 UCHAR VSAFE5V_GPIO[7]; /// PDO7 GPIO1 to GPIO7 FT_EEPROM_PD_PDO_mv_ma BM_PDO_Sink; FT_EEPROM_PD_PDO_mv_ma BM_PDO_Source; FT_EEPROM_PD_PDO_mv_ma BM_PDO_Sink_2; // (FTx233HP only) /// PD Timers UCHAR srt; /// Sender Response Timer UCHAR hrt; /// Hard Reset Timer UCHAR sct; /// Source Capability Timer UCHAR dit; /// Discover Identity Timer USHORT srcrt; /// Source Recover Timer USHORT trt; /// Transition Timer USHORT sofft; /// Source off timer USHORT nrt; /// No Response Timer USHORT swct; /// Sink Wait Capability Timer USHORT snkrt; /// Sink Request Timer UCHAR dt; /// Discharge Timer UCHAR cnst; /// Chunk not supported timer USHORT it; /// Idle Timer /// PD Control UCHAR i2caddr; /// I2C Address (hex) UINT prou; /// Power Reserved for OWN use UINT trim1; /// TRIM1 UINT trim2; /// TRIM2 UCHAR extdc; /// non-zero to enable ETERNAL_DC_POWER } FT_EEPROM_PD, *PFT_EEPROM_PD; /// FT2233HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT2232H with power delivery typedef struct _ft_eeprom_2233hp { FT_EEPROM_2232H ft2232h; FT_EEPROM_PD pd; } FT_EEPROM_2233HP, *PFT_EEPROM_2233HP; /// FT4233HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT4232H with power delivery typedef struct _ft_eeprom_4233hp { FT_EEPROM_4232H ft4232h; FT_EEPROM_PD pd; } FT_EEPROM_4233HP, *PFT_EEPROM_4233HP; /// FT2232HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT2232H with power delivery typedef struct _ft_eeprom_2232hp { FT_EEPROM_2232H ft2232h; FT_EEPROM_PD pd; } FT_EEPROM_2232HP, *PFT_EEPROM_2232HP; /// FT4232HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT4232H with power delivery typedef struct _ft_eeprom_4232hp { FT_EEPROM_4232H ft4232h; FT_EEPROM_PD pd; } FT_EEPROM_4232HP, *PFT_EEPROM_4232HP; /// FT233HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT233H with power delivery typedef struct _ft_eeprom_233hp { FT_EEPROM_232H ft232h; FT_EEPROM_PD pd; } FT_EEPROM_233HP, *PFT_EEPROM_233HP; /// FT232HP EEPROM structure for use with FT_EEPROM_Read and FT_EEPROM_Program /// FT232H with power delivery typedef struct _ft_eeprom_232hp { FT_EEPROM_232H ft232h; FT_EEPROM_PD pd; } FT_EEPROM_232HP, *PFT_EEPROM_232HP; /** @noop FT_EEPROM_Read * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (XP and later) * @par Summary * Read data from the EEPROM, this command will work for all existing FTDI chipset, and must be * used for the FT-X series. * @param ftHandle Handle of the device. * @param *eepromData Pointer to a buffer that contains the data to be read. * Note: This structure is different for each device type. * @param eepromDataSize Size of the eepromData buffer that contains storage for the data to be read. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter *eepromDATA as a pointer to a structure matching the device * type being accessed e.g. * @li PFT_EEPROM_232B is the structure for FT2xxB devices. * @li PFT_EEPROM_2232 is the structure for FT2232D devices. * @li PFT_EEPROM_232R is the structure for FT232R devices. * @li PFT_EEPROM_2232H is the structure for FT2232H devices. * @li PFT_EEPROM_4232H is the structure for FT4232H devices. * @li PFT_EEPROM_232H is the structure for FT232H devices. * @li PFT_EEPROM_X_SERIES is the structure for FT2xxX devices. * * The function does not perform any checks on buffer sizes, so the buffers passed in the eepromDATA * structure must be big enough to accommodate their respective strings (including null terminators). * The sizes shown in the following example are more than adequate and can be rounded down if necessary. * The restriction is that the Manufacturer string length plus the Description string length is less than or * equal to 40 characters. * @note Note that the DLL must be informed which version of the eepromDATA structure is being used. This is * done through the PFT_EEPROM_HEADER structure. The first element of this structure is deviceType and * may be FT_DEVICE_BM, FT_DEVICE_AM, FT_DEVICE_2232C, FT_DEVICE_232R, FT_DEVICE_2232H, * FT_DEVICE_4232H, FT_DEVICE_232H, or FT_DEVICE_X_SERIES as defined in FTD2XX.h. */ FTD2XX_API FT_STATUS WINAPI FT_EEPROM_Read( FT_HANDLE ftHandle, void *eepromData, DWORD eepromDataSize, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @noop FT_EEPROM_Program * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (XP and later) * @par Summary * Write data into the EEPROM, this command will work for all existing FTDI chipset, and must be used for * the FT-X series. * @param ftHandle Handle of the device. * @param *eepromData Pointer to a buffer that contains the data to be written. * Note: This structure is different for each device type. * @param eepromDataSize Size of the eepromData buffer that contains storage for the data to be written. * @param *Manufacturer Pointer to a null-terminated string containing the manufacturer name. * @param *ManufacturerId Pointer to a null-terminated string containing the manufacturer ID. * @param *Description Pointer to a null-terminated string containing the device description. * @param *SerialNumber Pointer to a null-terminated string containing the device serial number. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function interprets the parameter *eepromDATA as a pointer to a structure matching the device * type being accessed e.g. * @li PFT_EEPROM_232B is the structure for FT2xxB devices. * @li PFT_EEPROM_2232 is the structure for FT2232D devices. * @li PFT_EEPROM_232R is the structure for FT232R devices. * @li PFT_EEPROM_2232H is the structure for FT2232H devices. * @li PFT_EEPROM_4232H is the structure for FT4232H devices. * @li PFT_EEPROM_232H is the structure for FT232H devices. * @li PFT_EEPROM_X_SERIES is the structure for FT2xxX devices. * * The function does not perform any checks on buffer sizes, so the buffers passed in the eepromDATA * structure must be big enough to accommodate their respective strings (including null terminators). * @n The sizes shown in the following example are more than adequate and can be rounded down if necessary. * The restriction is that the Manufacturer string length plus the Description string length is less than or * equal to 40 characters. * @note Note that the DLL must be informed which version of the eepromDATA structure is being used. This is * done through the PFT_EEPROM_HEADER structure. The first element of this structure is deviceType and * may be FT_DEVICE_BM, FT_DEVICE_AM, FT_DEVICE_2232C, FT_DEVICE_232R, FT_DEVICE_2232H, * FT_DEVICE_4232H, FT_DEVICE_232H, or FT_DEVICE_X_SERIES as defined in FTD2XX.h. */ FTD2XX_API FT_STATUS WINAPI FT_EEPROM_Program( FT_HANDLE ftHandle, void *eepromData, DWORD eepromDataSize, char *Manufacturer, char *ManufacturerId, char *Description, char *SerialNumber ); /** @} */ /** @name Extended API Functions * The extended API functions do not apply to FT8U232AM or FT8U245AM devices. FTDI’s other USB-UART * and USB-FIFO ICs (the FT2232H, FT4232H, FT232R, FT245R, FT2232, FT232B and FT245B) do support * these functions. Note that there is device dependence in some of these functions. */ /** @{ */ /** @noop FT_SetLatencyTimer * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Set the latency timer value. * @param ftHandle Handle of the device. * @param ucLatency Required value, in milliseconds, of latency timer. Valid range is 2 - 255. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * In the FT8U232AM and FT8U245AM devices, the receive buffer timeout that is used to flush remaining * data from the receive buffer was fixed at 16 ms. In all other FTDI devices, this timeout is * programmable and can be set at 1 ms intervals between 2ms and 255 ms. This allows the device to * be better optimize for protocols requiring faster response times from short data packets. */ FTD2XX_API FT_STATUS WINAPI FT_SetLatencyTimer( FT_HANDLE ftHandle, UCHAR ucLatency ); /** @noop FT_GetLatencyTimer * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Get the current value of the latency timer. * @param ftHandle Handle of the device. * @param pucLatency Pointer to unsigned char to store latency timer value. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * In the FT8U232AM and FT8U245AM devices, the receive buffer timeout that is used to flush remaining * data from the receive buffer was fixed at 16 ms. In all other FTDI devices, this timeout is * programmable and can be set at 1 ms intervals between 2ms and 255 ms. This allows the device to * be better optimized for protocols requiring faster response times from short data packets. */ FTD2XX_API FT_STATUS WINAPI FT_GetLatencyTimer( FT_HANDLE ftHandle, PUCHAR pucLatency ); /** @noop FT_SetBitMode * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Enables different chip modes. * @param ftHandle Handle of the device. * @param ucMask Required value for bit mode mask. This sets up which bits are inputs and outputs. * A bit value of 0 sets the corresponding pin to an input, a bit value of 1 sets the corresponding * pin to an output. * @n In the case of CBUS Bit Bang, the upper nibble of this value controls which pins are inputs * and outputs, while the lower nibble controls which of the outputs are high and low. * @param ucEnable Mode value. Can be one of the following: * @li 0x0 = Reset * @li 0x1 = Asynchronous Bit Bang * @li 0x2 = MPSSE (FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x4 = Synchronous Bit Bang (FT232R, FT245R, FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x8 = MCU Host Bus Emulation Mode (FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x10 = Fast Opto-Isolated Serial Mode (FT2232, FT2232H, FT4232H and FT232H devices only) * @li 0x20 = CBUS Bit Bang Mode (FT232R and FT232H devices only) * @li 0x40 = Single Channel Synchronous 245 FIFO Mode (FT2232H and FT232H devices only) * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * For a description of available bit modes for the FT232R, see the application note "Bit Bang Modes * for the FT232R and FT245R". * @n For a description of available bit modes for the FT2232, see the application note "Bit Mode * Functions for the FT2232". * @n For a description of Bit Bang Mode for the FT232B and FT245B, see the application note * "FT232B/FT245B Bit Bang Mode". * @n Application notes are available for download from the FTDI website. * Note that to use CBUS Bit Bang for the FT232R, the CBUS must be configured for CBUS Bit Bang in the * EEPROM. * @note Note that to use Single Channel Synchronous 245 FIFO mode for the FT2232H, channel A must be * configured for FT245 FIFO mode in the EEPROM. */ FTD2XX_API FT_STATUS WINAPI FT_SetBitMode( FT_HANDLE ftHandle, UCHAR ucMask, UCHAR ucEnable ); /** @noop FT_GetBitMode * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the instantaneous value of the data bus. * @param ftHandle Handle of the device. * @param pucMode Pointer to unsigned char to store the instantaneous data bus value. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * For a description of available bit modes for the FT232R, see the application note "Bit Bang Modes * for the FT232R and FT245R". * @n For a description of available bit modes for the FT2232, see the application note "Bit Mode * Functions for the FT2232". * @n For a description of bit bang modes for the FT232B and FT245B, see the application note * "FT232B/FT245B Bit Bang Mode". * @n For a description of bit modes supported by the FT4232H and FT2232H devices, please see the * IC data sheets. * @n These application notes are available for download from the FTDI website. */ FTD2XX_API FT_STATUS WINAPI FT_GetBitMode( FT_HANDLE ftHandle, PUCHAR pucMode ); /** @noop FT_SetUSBParameters * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Set the USB request transfer size. * @param ftHandle Handle of the device. * @param ulInTransferSize Transfer size for USB IN request. * @param ulOutTransferSize Transfer size for USB OUT request. * @returns * FT_OK if successful, otherwise the return value is an FT error code. * @remarks * This function can be used to change the transfer sizes from the default transfer size of 4096 * bytes to better suit the application requirements. Transfer sizes must be set to a multiple * of 64 bytes between 64 bytes and 64k bytes. * @n When FT_SetUSBParameters is called, the change comes into effect immediately and any data * that was held in the driver at the time of the change is lost. * @note Note that, at present, only ulInTransferSize is supported. */ FTD2XX_API FT_STATUS WINAPI FT_SetUSBParameters( FT_HANDLE ftHandle, ULONG ulInTransferSize, ULONG ulOutTransferSize ); /** @} */ /** @name FT-Win32 API Functions * The functions in this section are supplied to ease porting from a Win32 serial port application. These * functions are supported under non-Windows platforms to assist with porting existing applications from * Windows. Note that classic D2XX functions and the Win32 D2XX functions should not be mixed unless * stated. */ /** @{ */ /** @noop FT_W32_CreateFile * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Opens the specified device and return a handle which will be used for subsequent accesses. * The device can be specified by its serial number, device description, or location. * @n This function must be used if overlapped I/O is required. * @param lpszName Meaning depends on the value of dwAttrsAndFlags. Can be a pointer to a null * terminated string that contains the description or serial number of the device, or can be * the location of the device. These values can be obtained from the FT_CreateDeviceInfoList, * FT_GetDeviceInfoDetail or FT_ListDevices functions. * @param dwAccess Type of access to the device. Access can be GENERIC_READ, * GENERIC_WRITE or both. Ignored in Linux. * @param dwShareMode How the device is shared. This value must be set to 0. * @param lpSecurityAttributes This parameter has no effect and should be set to NULL. * @param dwCreate This parameter must be set to OPEN_EXISTING. Ignored in Linux. * @param dwAttrsAndFlags File attributes and flags. This parameter is a combination of * FILE_ATTRIBUTE_NORMAL, FILE_FLAG_OVERLAPPED if overlapped I/O is used, * FT_OPEN_BY_SERIAL_NUMBER if lpszName is the device’s serial number, and * FT_OPEN_BY_DESCRIPTION if lpszName is the device’s description. * @param hTemplate This parameter must be NULL. * @returns * If the function is successful, the return value is a handle. * If the function is unsuccessful, the return value is the Win32 error code INVALID_HANDLE_VALUE. * @remarks * The meaning of lpszName depends on dwAttrsAndFlags: if FT_OPEN_BY_SERIAL_NUMBER or * FT_OPEN_BY_DESCRIPTION is set in dwAttrsAndFlags, lpszName contains a pointer to a null terminated * string that contains the device's serial number or description; if FT_OPEN_BY_LOCATION is set in * dwAttrsAndFlags, lpszName is interpreted as a value of type long that contains the location ID of * the device. dwAccess can be GENERIC_READ, GENERIC_WRITE or both; dwShareMode must be set to 0; * lpSecurityAttributes must be set to NULL; dwCreate must be set to OPEN_EXISTING; dwAttrsAndFlags * is a combination of FILE_ATTRIBUTE_NORMAL, FILE_FLAG_OVERLAPPED if overlapped I/O is used, * FT_OPEN_BY_SERIAL_NUMBER or FT_OPEN_BY_DESCRIPTION or FT_OPEN_BY_LOCATION; hTemplate * must be NULL. * @note Note that Linux, Mac OS X and Windows CE do not support overlapped IO. Windows CE * does not support location IDs. */ FTD2XX_API FT_HANDLE WINAPI FT_W32_CreateFile( LPCTSTR lpszName, DWORD dwAccess, DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes, DWORD dwCreate, DWORD dwAttrsAndFlags, HANDLE hTemplate ); /** @noop FT_W32_CloseHandle * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Close the specified device handle. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_CloseHandle( FT_HANDLE ftHandle ); /** @noop FT_W32_ReadFile * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Read data from the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to a buffer that receives the data from the device. * @param nBufferSize Number of bytes to read from the device. * @param lpdwBytesReturned Pointer to a variable that receives the number of bytes read from * the device. * @param lpOverlapped Pointer to an overlapped structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function supports both non-overlapped and overlapped I/O, except under Linux, Mac OS X * and Windows CE where only non-overlapped IO is supported. * @n @b Non-overlapped @b I/O * @n The parameter, lpOverlapped, must be NULL for non-overlapped I/O. * @n This function always returns the number of bytes read in lpdwBytesReturned. * This function does not return until dwBytesToRead have been read into the buffer. The number of * bytes in the receive queue can be determined by calling FT_GetStatus or FT_GetQueueStatus, and * passed as dwBytesToRead so that the function reads the device and returns immediately. * @n When a read timeout has been setup in a previous call to FT_W32_SetCommTimeouts, this function * returns when the timer expires or dwBytesToRead have been read, whichever occurs first. If a * timeout occurred, any available data is read into lpBuffer and the function returns a non-zero value. * @n An application should use the function return value and lpdwBytesReturned when processing the * buffer. If the return value is non-zero and lpdwBytesReturned is equal to dwBytesToRead then the * function has completed normally. If the return value is non-zero and lpdwBytesReturned is less * then dwBytesToRead then a timeout has occurred, and the read request has been partially completed. * @note Note that if a timeout occurred and no data was read, the return value is still non-zero. * @n @b Overlapped @b I/O * @n When the device has been opened for overlapped I/O, an application can issue a request and * perform some additional work while the request is pending. This contrasts with the case * of non-overlapped I/O in which the application issues a request and receives control again only * after the request has been completed. * @n The parameter, lpOverlapped, must point to an initialized OVERLAPPED structure. If there is * enough data in the receive queue to satisfy the request, the request completes immediately and * the return code is non-zero. The number of bytes read is returned in lpdwBytesReturned. * @n If there is not enough data in the receive queue to satisfy the request, the request completes * immediately, and the return code is zero, signifying an error. An application should call * FT_W32_GetLastError to get the cause of the error. If the error code is ERROR_IO_PENDING, the * overlapped operation is still in progress, and the application can perform other processing. * Eventually, the application checks the result of the overlapped request by calling * FT_W32_GetOverlappedResult. * @n If successful, the number of bytes read is returned in lpdwBytesReturned. */ FTD2XX_API BOOL WINAPI FT_W32_ReadFile( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD nBufferSize, LPDWORD lpdwBytesReturned, LPOVERLAPPED lpOverlapped ); /** @noop FT_W32_WriteFile * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Write data to the device. * @param ftHandle Handle of the device. * @param lpBuffer Pointer to the buffer that contains the data to write to the device. * @param nBufferSize Number of bytes to be written to the device. * @param lpdwBytesWritten Pointer to a variable that receives the number of bytes written to the device. * @param lpOverlapped Pointer to an overlapped structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function supports both non-overlapped and overlapped I/O, except under Linux, Mac OS X and * Windows CE where only non-overlapped IO is supported. * @n @b Non-overlapped @b I/O * @n The parameter, lpOverlapped, must be NULL for non-overlapped I/O. * @n This function always returns the number of bytes written in lpdwBytesWritten. * This function does not return until dwBytesToWrite have been written to the device. * When a write timeout has been setup in a previous call to FT_W32_SetCommTimeouts, this function * returns when the timer expires or dwBytesToWrite have been written, whichever occurs first. If a * timeout occurred, lpdwBytesWritten contains the number of bytes actually written, and the function * returns a non-zero value. * @n An application should always use the function return value and lpdwBytesWritten. If the return * value is non-zero and lpdwBytesWritten is equal to dwBytesToWrite then the function has completed * normally. If the return value is non-zero and lpdwBytesWritten is less then dwBytesToWrite then a * timeout has occurred, and the write request has been partially completed. * @note Note that if a timeout occurred and no data was written, the return value is still non-zero. * @n @b Overlapped @b I/O * @n When the device has been opened for overlapped I/O, an application can issue a request and perform * some additional work while the request is pending. This contrasts with the case of non-overlapped * I/O in which the application issues a request and receives control again only after the request has * been completed. * @n The parameter, lpOverlapped, must point to an initialized OVERLAPPED structure. * This function completes immediately, and the return code is zero, signifying an error. An application * should call FT_W32_GetLastError to get the cause of the error. If the error code is ERROR_IO_PENDING, * the overlapped operation is still in progress, and the application can perform other processing. * Eventually, the application checks the result of the overlapped request by calling * FT_W32_GetOverlappedResult. * @n If successful, the number of bytes written is returned in lpdwBytesWritten. */ FTD2XX_API BOOL WINAPI FT_W32_WriteFile( FT_HANDLE ftHandle, LPVOID lpBuffer, DWORD nBufferSize, LPDWORD lpdwBytesWritten, LPOVERLAPPED lpOverlapped ); /** @noop FT_W32_GetOverlappedResult * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the result of an overlapped operation. * @param ftHandle Handle of the device. * @param lpOverlapped Pointer to an overlapped structure. * @param lpdwBytesTransferred Pointer to a variable that receives the number of bytes transferred * during the overlapped operation. * @param bWait Set to TRUE if the function does not return until the operation has been completed. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function is used with overlapped I/O and so is not supported in Linux, Mac OS X or Windows CE. For * a description of its use, see FT_W32_ReadFile and FT_W32_WriteFile. */ FTD2XX_API BOOL WINAPI FT_W32_GetOverlappedResult( FT_HANDLE ftHandle, LPOVERLAPPED lpOverlapped, LPDWORD lpdwBytesTransferred, BOOL bWait ); /** @noop FT_W32_EscapeCommFunction * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Perform an extended function. * @param ftHandle Handle of the device. * @param dwFunc The extended function to perform can be one of the following values: * @li CLRDTR - Clear the DTR signal * @li CLRRTS - Clear the RTS signal * @li SETDTR - Set the DTR signal * @li SETRTS - Set the RTS signal * @li SETBREAK - Set the BREAK condition * @li CLRBREAK - Clear the BREAK condition * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_EscapeCommFunction( FT_HANDLE ftHandle, DWORD dwFunc ); /** @noop FT_W32_GetCommModemStatus * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function gets the current modem control value. * @param ftHandle Handle of the device. * @param lpdwModemStatus Pointer to a variable to contain modem control value. The modem * control value can be a combination of the following: * @li MS_CTS_ON - Clear To Send (CTS) is on * @li MS_DSR_ON - Data Set Ready (DSR) is on * @li MS_RING_ON - Ring Indicator (RI) is on * @li MS_RLSD_ON - Receive Line Signal Detect (RLSD) is on * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommModemStatus( FT_HANDLE ftHandle, LPDWORD lpdwModemStatus ); /** @noop FT_W32_SetupComm * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the read and write buffers. * @param ftHandle Handle of the device. * @param dwReadBufferSize Length, in bytes, of the read buffer. * @param dwWriteBufferSize Length, in bytes, of the write buffer. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function has no effect. It is the responsibility of the driver to allocate sufficient * storage for I/O requests. */ FTD2XX_API BOOL WINAPI FT_W32_SetupComm( FT_HANDLE ftHandle, DWORD dwReadBufferSize, DWORD dwWriteBufferSize ); /** * Structure for FT_W32_ClearCommError lpftComstat parameter. * @see FT_W32_ClearCommError */ typedef struct _FTCOMSTAT { DWORD fCtsHold : 1; DWORD fDsrHold : 1; DWORD fRlsdHold : 1; DWORD fXoffHold : 1; DWORD fXoffSent : 1; DWORD fEof : 1; DWORD fTxim : 1; DWORD fReserved : 25; DWORD cbInQue; DWORD cbOutQue; } FTCOMSTAT, *LPFTCOMSTAT; /** Structure for FT_W32_SetCommState and FT_W32_GetCommState lpftDcb parameter. * @see FT_W32_SetCommState * @see FT_W32_GetCommState */ typedef struct _FTDCB { DWORD DCBlength; /** sizeof(FTDCB) */ DWORD BaudRate; /** Baudrate at which running */ DWORD fBinary : 1; /** Binary Mode (skip EOF check) */ DWORD fParity : 1; /** Enable parity checking */ DWORD fOutxCtsFlow : 1; /** CTS handshaking on output */ DWORD fOutxDsrFlow : 1; /** DSR handshaking on output */ DWORD fDtrControl : 2; /** DTR Flow control */ DWORD fDsrSensitivity : 1; /** DSR Sensitivity */ DWORD fTXContinueOnXoff : 1; /** Continue TX when Xoff sent */ DWORD fOutX : 1; /** Enable output X-ON/X-OFF */ DWORD fInX : 1; /** Enable input X-ON/X-OFF */ DWORD fErrorChar : 1; /** Enable Err Replacement */ DWORD fNull : 1; /** Enable Null stripping */ DWORD fRtsControl : 2; /** Rts Flow control */ DWORD fAbortOnError : 1; /** Abort all reads and writes on Error */ DWORD fDummy2 : 17; /** Reserved */ WORD wReserved; /** Not currently used */ WORD XonLim; /** Transmit X-ON threshold */ WORD XoffLim; /** Transmit X-OFF threshold */ BYTE ByteSize; /** Number of bits/byte, 4-8 */ BYTE Parity; /** 0-4=None,Odd,Even,Mark,Space */ BYTE StopBits; /** FT_STOP_BITS_1 or FT_STOP_BITS_2 */ char XonChar; /** Tx and Rx X-ON character */ char XoffChar; /** Tx and Rx X-OFF character */ char ErrorChar; /** Error replacement char */ char EofChar; /** End of Input character */ char EvtChar; /** Received Event character */ WORD wReserved1; /** Fill for now. */ } FTDCB, *LPFTDCB; /** Structure for FT_W32_SetCommTimeouts and FT_W32_GetCommTimeouts lpftTimeouts parameter. * @see FT_W32_SetCommTimeouts * @see FT_W32_GetCommTimeouts */ typedef struct _FTTIMEOUTS { DWORD ReadIntervalTimeout; /** Maximum time between read chars. */ DWORD ReadTotalTimeoutMultiplier; /** Multiplier of characters. */ DWORD ReadTotalTimeoutConstant; /** Constant in milliseconds. */ DWORD WriteTotalTimeoutMultiplier; /** Multiplier of characters. */ DWORD WriteTotalTimeoutConstant; /** Constant in milliseconds. */ } FTTIMEOUTS, *LPFTTIMEOUTS; /** @noop FT_W32_SetCommState * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the state of the device according to the contents of a device control block (DCB). * @param ftHandle Handle of the device. * @param lpftDcb Pointer to an FTDCB structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommState( FT_HANDLE ftHandle, LPFTDCB lpftDcb ); /** @noop FT_W32_GetCommState * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function gets the current device state. * @param ftHandle Handle of the device. * @param lpftDcb Pointer to an FTDCB structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * The current state of the device is returned in a device control block. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommState( FT_HANDLE ftHandle, LPFTDCB lpftDcb ); /** @noop FT_W32_SetCommTimeouts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function sets the timeout parameters for I/O requests. * @param ftHandle Handle of the device. * @param pftTimeouts Pointer to an FTTIMEOUTS structure to store timeout information. * @returns * If the function is unsuccessful, the return value is zero. * @remarks * Timeouts are calculated using the information in the FTTIMEOUTS structure. * @n For read requests, the number of bytes to be read is multiplied by the total timeout * multiplier, and added to the total timeout constant. So, if TS is an FTTIMEOUTS structure * and the number of bytes to read is dwToRead, the read timeout, rdTO, is calculated as follows. * @n rdTO = (dwToRead * TS.ReadTotalTimeoutMultiplier) + TS.ReadTotalTimeoutConstant * @n For write requests, the number of bytes to be written is multiplied by the total timeout * multiplier, and added to the total timeout constant. So, if TS is an FTTIMEOUTS structure * and the number of bytes to write is dwToWrite, the write timeout, wrTO, is calculated as follows. * @n wrTO = (dwToWrite * TS.WriteTotalTimeoutMultiplier) + TS.WriteTotalTimeoutConstant * @n Linux and Mac OS X currently ignore the ReadIntervalTimeout, ReadTotalTimeoutMultiplier and * WriteTotalTimeoutMultiplier. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommTimeouts( FT_HANDLE ftHandle, FTTIMEOUTS *pftTimeouts ); /** @noop FT_W32_GetCommTimeouts * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function gets the current read and write request timeout parameters for the specified device. * @param ftHandle Handle of the device. * @param pftTimeouts Pointer to an FTTIMEOUTS structure to store timeout information. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * For an explanation of how timeouts are used, see FT_W32_SetCommTimeouts. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommTimeouts( FT_HANDLE ftHandle, FTTIMEOUTS *pftTimeouts ); /** @noop FT_W32_SetCommBreak * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Puts the communications line in the BREAK state. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommBreak( FT_HANDLE ftHandle ); /** @noop FT_W32_ClearCommBreak * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Puts the communications line in the non-BREAK state. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_ClearCommBreak( FT_HANDLE ftHandle ); /** @noop FT_W32_SetCommMask * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function specifies events that the device has to monitor. * @param ftHandle Handle of the device. * @param ulEventMask Mask containing events that the device has to monitor. This can be a combination of * the following: * @li EV_BREAK - BREAK condition detected * @li EV_CTS - Change in Clear To Send (CTS) * @li EV_DSR - Change in Data Set Ready (DSR) * @li EV_ERR - Error in line status * @li EV_RING - Change in Ring Indicator (RI) * @li EV_RLSD - Change in Receive Line Signal Detect (RLSD) * @li EV_RXCHAR - Character received * @li EV_RXFLAG - Event character received * @li EV_TXEMPTY - Transmitter empty * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function specifies the events that the device should monitor. An application can call the * function FT_W32_WaitCommEvent to wait for an event to occur. */ FTD2XX_API BOOL WINAPI FT_W32_SetCommMask( FT_HANDLE ftHandle, ULONG ulEventMask ); /** @noop 6 FT_W32_GetCommMask * @par Supported Operating Systems * Windows (2000 and later) * @par Summary * Retrieves the events that are currently being monitored by a device. * @param ftHandle Handle of the device. * @param lpdwEventMask Pointer to a location that receives a mask that contains the events that are * currently enabled. This parameter can be one or more of the following values: * @li EV_BREAK - BREAK condition detected * @li EV_CTS - Change in Clear To Send (CTS) * @li EV_DSR - Change in Data Set Ready (DSR) * @li EV_ERR - Error in line status * @li EV_RING - Change in Ring Indicator (RI) * @li EV_RLSD - Change in Receive Line Signal Detect (RLSD) * @li EV_RXCHAR - Character received * @li EV_RXFLAG - Event character received * @li EV_TXEMPTY - Transmitter empty * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function returns events currently being monitored by the device. Event monitoring for these * events is enabled by the FT_W32_SetCommMask function. */ FTD2XX_API BOOL WINAPI FT_W32_GetCommMask( FT_HANDLE ftHandle, LPDWORD lpdwEventMask ); /** @noop FT_W32_WaitCommEvent * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function waits for an event to occur. * @param ftHandle Handle of the device. * @param pulEvent Pointer to a location that receives a mask that contains the events that occurred. * @param lpOverlapped Pointer to an overlapped structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function supports both non-overlapped and overlapped I/O, except under Windows CE and Linux * where only non-overlapped IO is supported. * @n @b Non-overlapped @b I/O * The parameter, lpOverlapped, must be NULL for non-overlapped I/O. * @n This function does not return until an event that has been specified in a call to * FT_W32_SetCommMask has occurred. The events that occurred and resulted in this function returning * are stored in lpdwEvent. * @n @b Overlapped @b I/O * @n When the device has been opened for overlapped I/O, an application can issue a request and perform * some additional work while the request is pending. This contrasts with the case of non-overlapped * I/O in which the application issues a request and receives control again only after the request has * been completed. * @n The parameter, lpOverlapped, must point to an initialized OVERLAPPED structure. * This function does not return until an event that has been specified in a call to FT_W32_SetCommMask * has occurred. * @n If an event has already occurred, the request completes immediately, and the return code is non-zero. * @n The events that occurred are stored in lpdwEvent. * @n If an event has not yet occurred, the request completes immediately, and the return code is zero, * signifying an error. An application should call FT_W32_GetLastError to get the cause of the error. If * the error code is ERROR_IO_PENDING, the overlapped operation is still in progress, and the application * can perform other processing. Eventually, the application checks the result of the overlapped request * by calling FT_W32_GetOverlappedResult. The events that occurred and resulted in this function * returning are stored in lpdwEvent. */ FTD2XX_API BOOL WINAPI FT_W32_WaitCommEvent( FT_HANDLE ftHandle, PULONG pulEvent, LPOVERLAPPED lpOverlapped ); /** @noop FT_W32_PurgeComm * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * This function purges the device. * @param ftHandle Handle of the device. * @param dwMask Specifies the action to take. The action can be a combination of the following: * @li PURGE_TXABORT - Terminate outstanding overlapped writes * @li PURGE_RXABORT - Terminate outstanding overlapped reads * @li PURGE_TXCLEAR - Clear the transmit buffer * @li PURGE_RXCLEAR - Clear the receive buffer * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_PurgeComm( FT_HANDLE ftHandle, DWORD dwMask ); /** @noop FT_W32_GetLastError * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets the last error that occurred on the device. * @param ftHandle Handle of the device. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. * @remarks * This function is normally used with overlapped I/O and so is not supported in Windows CE. For a * description of its use, see FT_W32_ReadFile and FT_W32_WriteFile. * @n In Linux and Mac OS X, this function returns a DWORD that directly maps to the FT Errors (for * example the FT_INVALID_HANDLE error number). */ FTD2XX_API DWORD WINAPI FT_W32_GetLastError( FT_HANDLE ftHandle ); /** @noop FT_W32_ClearCommError * @par Supported Operating Systems * Linux * Mac OS X (10.4 and later) * Windows (2000 and later) * Windows CE (4.2 and later) * @par Summary * Gets information about a communications error and get current status of the device. * @param ftHandle Handle of the device. * @param lpdwErrors Variable that contains the error mask. * @param lpftComstat Pointer to FTCOMSTAT structure. * @returns * If the function is successful, the return value is nonzero. * If the function is unsuccessful, the return value is zero. */ FTD2XX_API BOOL WINAPI FT_W32_ClearCommError( FT_HANDLE ftHandle, LPDWORD lpdwErrors, LPFTCOMSTAT lpftComstat ); /** @noop FT_W32_CancelIo * Undocumented function. */ FTD2XX_API BOOL WINAPI FT_W32_CancelIo( FT_HANDLE ftHandle ); /** @} */ /** * @name FT232H Additional EEPROM Functions */ /** @{ */ /** @noop FT_EE_ReadConfig * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_EE_ReadConfig( FT_HANDLE ftHandle, UCHAR ucAddress, PUCHAR pucValue ); /** @noop FT_EE_WriteConfig * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_EE_WriteConfig( FT_HANDLE ftHandle, UCHAR ucAddress, UCHAR ucValue ); /** @noop FT_EE_ReadECC * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_EE_ReadECC( FT_HANDLE ftHandle, UCHAR ucOption, LPWORD lpwValue ); /** @noop FT_GetQueueStatusEx * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_GetQueueStatusEx( FT_HANDLE ftHandle, DWORD *dwRxBytes ); /** @noop FT_ComPortIdle * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_ComPortIdle( FT_HANDLE ftHandle ); /** @noop FT_ComPortCancelIdle * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_ComPortCancelIdle( FT_HANDLE ftHandle ); /** @noop FT_VendorCmdGet * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdGet( FT_HANDLE ftHandle, UCHAR Request, UCHAR *Buf, USHORT Len ); /** @noop FT_VendorCmdSet * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdSet( FT_HANDLE ftHandle, UCHAR Request, UCHAR *Buf, USHORT Len ); /** @noop FT_VendorCmdGetEx * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdGetEx( FT_HANDLE ftHandle, USHORT wValue, UCHAR *Buf, USHORT Len ); /** @noop FT_VendorCmdSetEx * Undocumented function. */ FTD2XX_API FT_STATUS WINAPI FT_VendorCmdSetEx( FT_HANDLE ftHandle, USHORT wValue, UCHAR *Buf, USHORT Len ); /** @} */ #ifdef __cplusplus } #endif #endif /* FTD2XX_H */ release/examples/Makefile0000664000000000000000000000074714261476161014474 0ustar rootrootSUBDIRS = \ BitMode \ EEPROM/erase \ EEPROM/read \ EEPROM/write \ EEPROM/user/read \ EEPROM/user/size \ EEPROM/user/write \ Events \ LargeRead \ loopback \ MultiThread \ SetVIDPID \ Simple \ static \ Timeouts \ W32/escapeseq \ W32/events \ W32/simple \ W32/timeouts \ write \ all: subdirs subdirs: for n in $(SUBDIRS); do "$(MAKE)" -C $$n || exit 1; done clean: rm -f *.o *~ for n in $(SUBDIRS); do "$(MAKE)" -C $$n clean; done release/examples/Timeouts/0000775000000000000000000000000014261476161014635 5ustar rootrootrelease/examples/Timeouts/main.c0000664000000000000000000000264614261476161015735 0ustar rootroot/* A very simple example to show a 5 second timout when reading nothing from a device. This example assumes that there is no hardware attached to the device so a timeout will occur after 5 seconds To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o timeouts main.c -L. -lftd2xx -Wl,-rpath /usr/local/lib */ #include #include "../ftd2xx.h" #define BUF_SIZE 0x1000 #define MAX_DEVICES 4 int main(int argc, char *argv[]) { char cBufRead[BUF_SIZE]; DWORD dwBytesRead; FT_STATUS ftStatus; FT_HANDLE ftHandle; int iport; int i; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } ftStatus = FT_Open(iport, &ftHandle); if(ftStatus != FT_OK) { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed, with error %d.\n", iport, (int)ftStatus); printf("Use lsmod to check if ftdi_sio (and usbserial) are present.\n"); printf("If so, unload them using rmmod, as they conflict with ftd2xx.\n"); return 1; } FT_SetTimeouts(ftHandle, 3000, 3000); // 3 second read timeout for(i = 0; i < 10 ; i++) { FT_Read(ftHandle, cBufRead, BUF_SIZE, &dwBytesRead); if(dwBytesRead != BUF_SIZE) printf("Timeout %d\n", i); else printf("Read %d\n", (int)dwBytesRead); } FT_Close(ftHandle); return 0; } release/examples/Timeouts/Makefile0000664000000000000000000000027114261476161016275 0ustar rootrootTOPDIR := $(shell cd ..; pwd) include $(TOPDIR)/Rules.make APP = timeouts all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP) release/examples/static/0000775000000000000000000000000014261476161014313 5ustar rootrootrelease/examples/static/main.c0000664000000000000000000000544714261476161015415 0ustar rootroot/* Simple example to open a maximum of 4 devices - write some data then read it back. Shows one method of using list devices also. Assumes the devices have a loopback connector on them and they also have a serial number To build use the following gcc statement (assuming you have the static d2xx library in the /usr/local/lib directory and you have created a symbolic link to it in the current dir). gcc -o static_link main.c -lpthread libftd2xx.a */ #include #include #include #include "../ftd2xx.h" #define BUF_SIZE 0x10 #define MAX_DEVICES 5 int main() { char cBufWrite[BUF_SIZE]; char * pcBufRead = NULL; char * pcBufLD[MAX_DEVICES + 1]; char cBufLD[MAX_DEVICES][64]; DWORD dwRxSize = 0; DWORD dwBytesWritten, dwBytesRead; FT_STATUS ftStatus; FT_HANDLE ftHandle[MAX_DEVICES]; int iNumDevs = 0; int i; int iDevicesOpen; for(i = 0; i < MAX_DEVICES; i++) { pcBufLD[i] = cBufLD[i]; } pcBufLD[MAX_DEVICES] = NULL; ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus != FT_OK) { printf("Error: FT_ListDevices returned %d\n", (int)ftStatus); return 1; } for(i = 0; ( (i #include #include #include #include #include "../../ftd2xx.h" #define BUF_SIZE 17 #define MAX_DEVICES 5 // Gloabls FT_HANDLE ftHandle[MAX_DEVICES]; void quit() { int i; for(i = 0; i < MAX_DEVICES; i++) { if(ftHandle[i] != NULL) { FT_W32_CloseHandle(ftHandle[i]); ftHandle[i] = NULL; printf("Closed device\n"); } } exit(1); } int main(void) { char cBufWrite[BUF_SIZE]; char * pcBufLD[MAX_DEVICES + 1]; char cBufLD[MAX_DEVICES][64]; DWORD dwBytesWritten, dwBytesRead, dwErrors, dwRead; FT_STATUS ftStatus; int iNumDevs = 0; int i, j; int iDevicesOpen = 0; FTDCB ftDCB, ftnewDCB; FTCOMSTAT ftComStat; for(i = 0; i < MAX_DEVICES; i++) { pcBufLD[i] = cBufLD[i]; ftHandle[i] = NULL; } pcBufLD[MAX_DEVICES] = NULL; ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus != FT_OK) { printf("Error: FT_ListDevices(%d)\n", ftStatus); return 1; } for(j = 0; j < BUF_SIZE; j++) { cBufWrite[j] = j; } for(i = 0; ( (i BUF_SIZE) { dwRead = BUF_SIZE; } else { dwRead = ftComStat.cbInQue; } if(FT_W32_ReadFile(ftHandle[i], cBufWrite, dwRead, &dwBytesRead, NULL) == FALSE) { ftStatus = FT_W32_GetLastError(ftHandle[i]); printf("Error FT_W32_ReadFile = %d)\n", ftStatus); return 1; } printf("dwBytesRead = %d\n", dwBytesRead); } printf("i = %d\n", i); iDevicesOpen = i; printf("iDevicesOpen = %d\n", iDevicesOpen); /* Cleanup */ for(i = 0; i < iDevicesOpen; i++) { if(ftHandle[i] != NULL) { if(FT_W32_CloseHandle(ftHandle[i]) == FALSE) { ftStatus = FT_W32_GetLastError(ftHandle[i]); printf("Error FT_W32_CloseHandle = %d, device = %d)\n", ftStatus, i); } printf("Closed device %s\n", cBufLD[i]); ftHandle[i] = NULL; } } return 0; } release/examples/W32/simple/Makefile0000775000000000000000000000027114261476161016333 0ustar rootrootTOPDIR := $(shell cd ..; cd ..; pwd) include $(TOPDIR)/Rules.make APP = w32_simple all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) -g clean: -rm -f *.o ; rm $(APP) release/examples/W32/escapeseq/0000775000000000000000000000000014261476161015350 5ustar rootrootrelease/examples/W32/escapeseq/main.c0000775000000000000000000000747314261476161016456 0ustar rootroot/* To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o w32_escapeseq main.c -L. -lftd2xx */ #include #include #include #include #include "../../ftd2xx.h" #define BUF_SIZE 0x11 #define MAX_DEVICES 5 //Globals FT_HANDLE ftHandle[MAX_DEVICES]; void quit() { int i; for(i = 0; i < MAX_DEVICES; i++) { if(ftHandle[i] != NULL) { FT_W32_CloseHandle(ftHandle[i]); ftHandle[i] = NULL; printf("Closed device\n"); } } exit(1); } int main(void) { char * pcBufRead = NULL; char * pcBufLD[MAX_DEVICES + 1]; char cBufLD[MAX_DEVICES][64]; FT_STATUS ftStatus; int iNumDevs = 0; int i; int iDevicesOpen; FTDCB ftDCB; for(i = 0; i < MAX_DEVICES; i++) { pcBufLD[i] = cBufLD[i]; ftHandle[i] = NULL; } pcBufLD[MAX_DEVICES] = NULL; ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus != FT_OK) { printf("Error: FT_ListDevices(%d)\n", ftStatus); return 1; } for(i = 0; ( (i #include #include #include "../../ftd2xx.h" #define BUF_SIZE 0x11 #define MAX_DEVICES 5 int main() { char cBufWrite[BUF_SIZE]; char * pcBufRead = NULL; char * pcBufLD[MAX_DEVICES + 1]; char cBufLD[MAX_DEVICES][64]; DWORD dwRxSize = 0; DWORD dwBytesWritten, dwBytesRead; FT_STATUS ftStatus; FT_HANDLE ftHandle[MAX_DEVICES]; int iNumDevs = 0; int i, j; int iDevicesOpen; FTDCB ftDCB; for(i = 0; i < MAX_DEVICES; i++) { pcBufLD[i] = cBufLD[i]; } pcBufLD[MAX_DEVICES] = NULL; ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus != FT_OK) { printf("Error: FT_ListDevices(%d)\n", ftStatus); return 1; } for(j = 0; j < BUF_SIZE; j++) { cBufWrite[j] = j; } for(i = 0; ( (i #include #include #include #include #include "../../ftd2xx.h" #define BUF_SIZE 0x11 #define MAX_DEVICES 5 // Globals FT_HANDLE ftHandle[MAX_DEVICES]; void quit() { int i; for(i = 0; i < MAX_DEVICES; i++) { if(ftHandle[i] != NULL) { FT_W32_CloseHandle(ftHandle[i]); ftHandle[i] = NULL; printf("Closed device\n"); } } exit(1); } int main() { char cBufWrite[BUF_SIZE]; char * pcBufRead = NULL; char * pcBufLD[MAX_DEVICES + 1]; char cBufLD[MAX_DEVICES][64]; DWORD dwBytesRead; FT_STATUS ftStatus; int iNumDevs = 0; int i, j; int iDevicesOpen; FTDCB ftDCB, ftnewDCB; FTTIMEOUTS ftTimouts, ftnewTimouts; struct timeval tv; struct timezone tz; for(i = 0; i < MAX_DEVICES; i++) { pcBufLD[i] = cBufLD[i]; ftHandle[i] = NULL; } pcBufLD[MAX_DEVICES] = NULL; ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus != FT_OK) { printf("Error: FT_ListDevices(%d)\n", ftStatus); return 1; } for(j = 0; j < BUF_SIZE; j++) { cBufWrite[j] = j; } for(i = 0; ( (i #include #include #include #include "../../ftd2xx.h" #include #define BUF_SIZE 1000 #define MAX_DEVICES 5 // Globals FT_HANDLE ftHandle[MAX_DEVICES]; void quit() { int i; for(i = 0; i < MAX_DEVICES; i++) { if(ftHandle[i] != NULL) { FT_W32_CloseHandle(ftHandle[i]); ftHandle[i] = NULL; printf("Closed device\n"); } } exit(1); } void *read_watch(void *pArgs) { DWORD dwBytesWritten; char cBufWrite[BUF_SIZE]; FT_HANDLE ftHandle = (FT_HANDLE)pArgs; usleep(1); printf("FT_W32_WriteFile\n"); FT_W32_WriteFile(ftHandle, cBufWrite, BUF_SIZE, &dwBytesWritten, NULL); printf("FT_W32_WriteFile done\n"); return NULL; } int main(int argc, char *argv[]) { pthread_t thread_id; int iTestTXEmpty; char * pcBufRead = NULL; char * pcBufLD[MAX_DEVICES + 1]; char cBufLD[MAX_DEVICES][64]; DWORD dwStat; FT_STATUS ftStatus; int iNumDevs = 0; int i; int iDevicesOpen = 0; DWORD dwMask, dwErrors; FTDCB ftDCB; FTCOMSTAT ftComstat; if(argc > 1) { sscanf(argv[1], "%d", &iTestTXEmpty); } else { iTestTXEmpty = 0; } for(i = 0; i < MAX_DEVICES; i++) { pcBufLD[i] = cBufLD[i]; ftHandle[i] = NULL; } pcBufLD[MAX_DEVICES] = NULL; ftStatus = FT_ListDevices(pcBufLD, &iNumDevs, FT_LIST_ALL | FT_OPEN_BY_SERIAL_NUMBER); if(ftStatus != FT_OK) { printf("Error: FT_ListDevices(%d)\n", ftStatus); return 1; } for(i = 0; ( (i #include "../ftd2xx.h" int main(int argc, char *argv[]) { DWORD bytesWritten = 0; DWORD baudRate = 9600; FT_STATUS ftStatus = FT_OK; FT_HANDLE ftHandle; UCHAR outputData; UCHAR pinStatus; int portNumber; if (argc > 1) { sscanf(argv[1], "%d", &portNumber); } else { portNumber = 0; } ftStatus = FT_Open(portNumber, &ftHandle); if (ftStatus != FT_OK) { /* FT_Open can fail if the ftdi_sio module is already loaded. */ printf("FT_Open(%d) failed (error %d).\n", portNumber, (int)ftStatus); printf("Use lsmod to check if ftdi_sio (and usbserial) are present.\n"); printf("If so, unload them using rmmod, as they conflict with ftd2xx.\n"); return 1; } /* Enable bit-bang mode, where 8 UART pins (RX, TX, RTS etc.) become * general-purpose I/O pins. */ printf("Selecting asynchronous bit-bang mode.\n"); ftStatus = FT_SetBitMode(ftHandle, 0xFF, /* sets all 8 pins as outputs */ FT_BITMODE_ASYNC_BITBANG); if (ftStatus != FT_OK) { printf("FT_SetBitMode failed (error %d).\n", (int)ftStatus); goto exit; } /* In bit-bang mode, setting the baud rate gives a clock rate * 16 times higher, e.g. baud = 9600 gives 153600 bytes per second. */ printf("Setting clock rate to %d\n", baudRate * 16); ftStatus = FT_SetBaudRate(ftHandle, baudRate); if (ftStatus != FT_OK) { printf("FT_SetBaudRate failed (error %d).\n", (int)ftStatus); goto exit; } /* Use FT_Write to set values of output pins. Here we set * them to alternate low and high (0xAA == 10101010). */ outputData = 0xAA; ftStatus = FT_Write(ftHandle, &outputData, 1, &bytesWritten); if (ftStatus != FT_OK) { printf("FT_Write failed (error %d).\n", (int)ftStatus); goto exit; } /* Despite its name, GetBitMode samples the values of the data pins. */ ftStatus = FT_GetBitMode(ftHandle, &pinStatus); if (ftStatus != FT_OK) { printf("FT_GetBitMode failed (error %d).\n", (int)ftStatus); goto exit; } if (pinStatus != outputData) { printf("Failure: pin data is %02X, but expected %02X\n", (unsigned int)pinStatus, (unsigned int)outputData); goto exit; } printf("Success: pin data is %02X, as expected.\n", (unsigned int)pinStatus); exit: /* Return chip to default (UART) mode. */ (void)FT_SetBitMode(ftHandle, 0, /* ignored with FT_BITMODE_RESET */ FT_BITMODE_RESET); (void)FT_Close(ftHandle); return 0; } release/examples/BitMode/Makefile0000664000000000000000000000144614261476161016014 0ustar rootroot#TOPDIR := $(shell cd ..; pwd) #include $(TOPDIR)/Rules.make DEPENDENCIES := -lpthread UNAME := $(shell uname) # Assume target is Mac OS if build host is Mac OS; any other host targets Linux ifeq ($(UNAME), Darwin) DEPENDENCIES += -lobjc -framework IOKit -framework CoreFoundation else DEPENDENCIES += -lrt endif CFLAGS = -Wall -Wextra DYNAMIC_LINK_OPTIONS := -Wl,-rpath /usr/local/lib APP = bitmode STATIC_APP = $(APP)-static DYNAMIC_APP = $(APP)-dynamic all: $(APP)-static $(APP)-dynamic $(STATIC_APP): main.c $(CC) main.c -o $(STATIC_APP) ../../build/libftd2xx.a $(CFLAGS) $(DEPENDENCIES) $(DYNAMIC_APP): main.c $(CC) main.c -o $(DYNAMIC_APP) $(CFLAGS) -lftd2xx $(DEPENDENCIES) $(DYNAMIC_LINK_OPTIONS) clean: -rm -f *.o ; rm $(STATIC_APP); rm $(DYNAMIC_APP) release/examples/Events/0000775000000000000000000000000014261476161014270 5ustar rootrootrelease/examples/Events/main.c0000664000000000000000000000303314261476161015357 0ustar rootroot/* Simple example to show the RX event. This example assumes you have a hardware setup with the receive port using this sample code and another app (such as hyperterm) is sending serial data to the receiving device. To build use the following gcc statement (assuming you have the d2xx library in the /usr/local/lib directory). gcc -o events main.c -L. -lftd2xx -Wl,-rpath /usr/local/lib */ #include #include "../ftd2xx.h" int main(int argc, char *argv[]) { DWORD dwBytesInQueue = 0; EVENT_HANDLE eh; FT_STATUS ftStatus; FT_HANDLE ftHandle; int iport; if(argc > 1) { sscanf(argv[1], "%d", &iport); } else { iport = 0; } pthread_mutex_init(&eh.eMutex, NULL); pthread_cond_init(&eh.eCondVar, NULL); ftStatus = FT_Open(iport, &ftHandle); if(ftStatus != FT_OK) { /* This can fail if the ftdi_sio driver is loaded use lsmod to check this and rmmod ftdi_sio to remove also rmmod usbserial */ printf("FT_Open(%d) failed\n", iport); return 1; } ftStatus = FT_SetFlowControl(ftHandle, FT_FLOW_NONE, 0, 0); if(ftStatus != FT_OK) { printf("Failed to set flow control\n"); } ftStatus = FT_SetEventNotification(ftHandle, FT_EVENT_RXCHAR, (PVOID)&eh); if(ftStatus != FT_OK) { printf("Failed to set events\n"); return 1; } pthread_mutex_lock(&eh.eMutex); pthread_cond_wait(&eh.eCondVar, &eh.eMutex); pthread_mutex_unlock(&eh.eMutex); FT_GetQueueStatus(ftHandle, &dwBytesInQueue); printf("Received chars %d bytes in queue\n", (int)dwBytesInQueue); FT_Close(ftHandle); return 0; } release/examples/Events/Makefile0000664000000000000000000000026714261476161015735 0ustar rootrootTOPDIR := $(shell cd ..; pwd) include $(TOPDIR)/Rules.make APP = events all: $(APP) $(APP): main.c $(CC) main.c -o $(APP) $(CFLAGS) clean: -rm -f *.o ; rm $(APP)