/* $Id: USBProxyDevice-os2.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */ /** @file * USB device proxy - the Linux backend. */ /* * Copyright (C) 2006-2020 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_DRV_USBPROXY #include #include #include #include #include #include #include #include #include #include #include #include #include "../USBProxyDevice.h" #define INCL_BASE #define INCL_ERRORS #include #include /********************************************************************************************************************************* * Structures and Typedefs * *********************************************************************************************************************************/ /** * Structure for keeping track of the URBs for a device. */ typedef struct USBPROXYURBOS2 { /** Pointer to the virtual URB. */ PVUSBURB pUrb; /** Pointer to the next OS/2 URB. */ struct USBPROXYURBOS2 *pNext; /** Pointer to the previous OS/2 URB. */ struct USBPROXYURBOS2 *pPrev; } USBPROXYURBOS2, *PUSBPROXYURBOS2; /** * Data for the OS/2 usb proxy backend. */ typedef struct USBPROXYDEVOS2 { /** The async thread for this device. * Currently only one thread is used, but this might have to change... */ RTTHREAD Thread; /** Thread termination indicator. */ bool volatile fTerminate; /** The USB handle. */ USBHANDLE hDevice; /** Critical section protecting the lists. */ RTCRITSECT CritSect; /** For blocking reap calls. */ RTSEMEVENT EventSyncWait; /** List of URBs to process. Doubly linked. */ PUSBPROXYURBOS2 pTodoHead; /** The tail pointer. */ PUSBPROXYURBOS2 pTodoTail; /** The list of free linux URBs. Singly linked. */ PUSBPROXYURBOS2 pFreeHead; /** The list of active linux URBs. Doubly linked. * We must maintain this so we can properly reap URBs of a detached device. * Only the split head will appear in this list. */ PUSBPROXYURBOS2 pInFlightHead; /** The list of landed linux URBs. Doubly linked. * Only the split head will appear in this list. */ PUSBPROXYURBOS2 pTaxingHead; /** The tail of the landed linux URBs. */ PUSBPROXYURBOS2 pTaxingTail; } USBPROXYDEVOS2, *PUSBPROXYDEVOS2; /********************************************************************************************************************************* * Internal Functions * *********************************************************************************************************************************/ #ifdef DYNAMIC_USBCALLS static int usbProxyOs2GlobalInit(void); #endif static PUSBPROXYURBOS2 usbProxyOs2UrbAlloc(PUSBPROXYDEV pProxyDev); static void usbProxyOs2UrbFree(PUSBPROXYDEV pProxyDev, PUSBPROXYURBOS2 pUrbOs2); static DECLCALLBACK(int) usbProxyOs2AsyncThread(RTTHREAD Thread, void *pvProxyDev); /********************************************************************************************************************************* * Global Variables * *********************************************************************************************************************************/ #ifdef DYNAMIC_USBCALLS static HMODULE g_hmod; static APIRET (APIENTRY *g_pfnUsbOpen)(PUSBHANDLE, USHORT, USHORT, USHORT, USHORT); static APIRET (APIENTRY *g_pfnUsbClose)(USBHANDLE); static APIRET (APIENTRY *g_pfnUsbCtrlMessage)(USBHANDLE, UCHAR, UCHAR, USHORT, USHORT, USHORT, void *, ULONG); static APIRET (APIENTRY *g_pfnUsbBulkRead2)(USBHANDLE, UCHAR, UCHAR, BOOL, PULONG, void *, ULONG); static APIRET (APIENTRY *g_pfnUsbBulkWrite2)(USBHANDLE, UCHAR, UCHAR, BOOL, ULONG, void *, ULONG); #else # define g_pfnUsbOpen UsbOpen # define g_pfnUsbClose UsbClose # define g_pfnUsbCtrlMessage UsbCtrlMessage # define g_pfnUsbBulkRead2 UsbBulkRead2 # define g_pfnUsbBulkWrite2 UsbBulkWrite2 #endif #ifdef DYNAMIC_USBCALLS /** * Loads usbcalls.dll and resolves the symbols we need. * * The usbcalls.dll will not be unloaded. * * @returns VBox status code. */ static int usbProxyOs2GlobalInit(void) { int rc = DosLoadModule(NULL, 0, (PCSZ)"usbcalls", &g_hmod); rc = RTErrConvertFromOS2(rc); if (RT_SUCCESS(rc)) { if ( (rc = DosQueryProcAddr(g_hmod, 0, (PCSZ)"UsbOpen", (PPFN)&g_pfnUsbOpen)) == NO_ERROR && (rc = DosQueryProcAddr(g_hmod, 0, (PCSZ)"UsbClose", (PPFN)&g_pfnUsbClose)) == NO_ERROR && (rc = DosQueryProcAddr(g_hmod, 0, (PCSZ)"UsbCtrlMessage", (PPFN)&g_pfnUsbCtrlMessage)) == NO_ERROR && (rc = DosQueryProcAddr(g_hmod, 0, (PCSZ)"UsbBulkRead", (PPFN)&g_pfnUsbBulkRead)) == NO_ERROR && (rc = DosQueryProcAddr(g_hmod, 0, (PCSZ)"UsbBulkWrite", (PPFN)&g_pfnUsbBulkWrite)) == NO_ERROR ) { return VINF_SUCCESS; } g_pfnUsbOpen = NULL; g_pfnUsbClose = NULL; g_pfnUsbCtrlMessage = NULL; g_pfnUsbBulkRead = NULL; g_pfnUsbBulkWrite = NULL; DosFreeModule(g_hmod); } g_hmod = NULLHANDLE; return rc; } #endif /** * Allocates a OS/2 URB request structure. * @returns Pointer to an active URB request. * @returns NULL on failure. * @param pProxyDev The proxy device instance. */ static PUSBPROXYURBOS2 usbProxyOs2UrbAlloc(PUSBPROXYDEV pProxyDev) { PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; PUSBPROXYURBOS2 pUrbOs2; RTCritSectEnter(&pDevOs2->CritSect); /* * Try remove a linux URB from the free list, if none there allocate a new one. */ pUrbOs2 = pDevOs2->pFreeHead; if (pUrbOs2) pDevOs2->pFreeHead = pUrbOs2->pNext; else { RTCritSectLeave(&pDevOs2->CritSect); pUrbOs2 = (PUSBPROXYURBOS2)RTMemAlloc(sizeof(*pUrbOs2)); if (!pUrbOs2) return NULL; RTCritSectEnter(&pDevOs2->CritSect); } /* * Link it into the active list */ pUrbOs2->pPrev = NULL; pUrbOs2->pNext = pDevOs2->pInFlightHead; if (pUrbOs2->pNext) pUrbOs2->pNext->pPrev = pUrbOs2; pDevOs2->pInFlightHead = pUrbOs2; RTCritSectLeave(&pDevOs2->CritSect); return pUrbOs2; } /** * Frees a linux URB request structure. * * @param pProxyDev The proxy device instance. * @param pUrbOs2 The linux URB to free. */ static void usbProxyOs2UrbFree(PUSBPROXYDEV pProxyDev, PUSBPROXYURBOS2 pUrbOs2) { PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; RTCritSectEnter(&pDevOs2->CritSect); /* * Remove from the active list. */ if (pUrbOs2->pNext) pUrbOs2->pNext->pPrev = pUrbOs2->pPrev; else if (pDevOs2->pTaxingTail == pUrbOs2) pDevOs2->pTaxingTail = pUrbOs2->pPrev; else if (pDevOs2->pTodoTail == pUrbOs2) pDevOs2->pTodoTail = pUrbOs2->pPrev; if (pUrbOs2->pPrev) pUrbOs2->pPrev->pNext = pUrbOs2->pNext; else if (pDevOs2->pTaxingHead == pUrbOs2) pDevOs2->pTaxingHead = pUrbOs2->pNext; else if (pDevOs2->pInFlightHead == pUrbOs2) pDevOs2->pInFlightHead = pUrbOs2->pNext; else if (pDevOs2->pTodoHead == pUrbOs2) pDevOs2->pTodoHead = pUrbOs2->pNext; /* * Link it into the free list. */ pUrbOs2->pPrev = NULL; pUrbOs2->pNext = pDevOs2->pFreeHead; pDevOs2->pFreeHead = pUrbOs2; RTCritSectLeave(&pDevOs2->CritSect); } /** * Thread for executing the URBs asynchronously. * * @returns VINF_SUCCESS. * @param Thread Thread handle (IPRT). * @param pvProxyDev Pointer to the proxy device we're servicing. */ static DECLCALLBACK(int) usbProxyOs2AsyncThread(RTTHREAD Thread, void *pvProxyDev) { PUSBPROXYDEV pProxyDev = (PUSBPROXYDEV)pvProxyDev; PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; size_t cbLow = 0; void *pvLow = NULL; /* * The main loop. * * We're always in the critsect, except when waiting or submitting a URB. */ int rc = RTCritSectEnter(&pDevOs2->CritSect); AssertRC(rc); while (!pDevOs2->fTerminate) { /* * Anything to do? */ PUSBPROXYURBOS2 pUrbOs2 = pDevOs2->pTodoHead; if (pUrbOs2) { pDevOs2->pTodoHead = pUrbOs2->pNext; if (pUrbOs2->pNext) pUrbOs2->pNext->pPrev = NULL; else pDevOs2->pTodoTail = NULL; /* * Move it to the in-flight list and submit it. */ pUrbOs2->pPrev = NULL; pUrbOs2->pNext = pDevOs2->pInFlightHead; if (pDevOs2->pInFlightHead) pDevOs2->pInFlightHead->pPrev = pUrbOs2; //else // pDevOs2->pInFlightTail = pUrbOs2; Log3(("%s: usbProxyOs2AsyncThread: pPickup\n", pUrbOs2->pUrb->pszDesc)); RTCritSectLeave(&pDevOs2->CritSect); /* * Process the URB. */ PVUSBURB pUrb = pUrbOs2->pUrb; uint8_t *pbData = &pUrb->abData[0]; ULONG cbData = pUrb->cbData; if ( (uintptr_t)pbData >= 0x20000000 || ((uintptr_t)pbData & 0xfff)) { if (cbData > cbLow) { if (pvLow) DosFreeMem(pvLow); cbLow = (cbData + 0xffff) & ~0xffff; rc = DosAllocMem(&pvLow, cbLow, PAG_WRITE | PAG_READ | OBJ_TILE | PAG_COMMIT); if (rc) { cbLow = 0; pvLow = NULL; } } if (pvLow) pbData = (uint8_t *)memcpy(pvLow, pbData, cbData); } switch (pUrb->enmType) { case VUSBXFERTYPE_MSG: { PVUSBSETUP pSetup = (PVUSBSETUP)&pbData[0]; Log2(("%s: usbProxyOs2AsyncThread: CtlrMsg\n", pUrb->pszDesc)); rc = g_pfnUsbCtrlMessage(pDevOs2->hDevice, /** @todo this API must take a endpoint number! */ pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength, pSetup + 1, 5*60000 /* min */); break; } case VUSBXFERTYPE_BULK: { /* there is a thing with altnative interface thing here... */ if (pUrb->enmDir == VUSBDIRECTION_IN) { Log2(("%s: usbProxyOs2AsyncThread: BulkRead %d\n", pUrb->pszDesc, cbData)); rc = g_pfnUsbBulkRead2(pDevOs2->hDevice, pUrb->EndPt | 0x80, 0, !pUrb->fShortNotOk, &cbData, pbData, 500);//5*6000); } else { Log2(("%s: usbProxyOs2AsyncThread: BulkWrite %d\n", pUrb->pszDesc, cbData)); rc = g_pfnUsbBulkWrite2(pDevOs2->hDevice, pUrb->EndPt, 0, !pUrb->fShortNotOk, cbData, pbData, 500);//5*6000); } break; } case VUSBXFERTYPE_INTR: case VUSBXFERTYPE_ISOC: default: Log2(("%s: usbProxyOs2AsyncThread: Unsupported\n", pUrb->pszDesc)); rc = USB_IORB_FAILED; break; } /* unbuffer */ if (pbData == pvLow) memcpy(pUrb->abData, pbData, pUrb->cbData); /* Convert rc to USB status code. */ int orc = rc; if (!rc) pUrb->enmStatus = VUSBSTATUS_OK; else if (rc == USB_ERROR_LESSTRANSFERED && !pUrb->fShortNotOk) { Assert(pUrb->cbData >= cbData); pUrb->cbData = cbData; pUrb->enmStatus = VUSBSTATUS_DATA_UNDERRUN; } else pUrb->enmStatus = VUSBSTATUS_STALL; Log2(("%s: usbProxyOs2AsyncThread: orc=%d enmStatus=%d cbData=%d \n", pUrb->pszDesc, orc, pUrb->enmStatus, pUrb->cbData)); NOREF(orc); /* * Retire it to the completed list */ RTCritSectEnter(&pDevOs2->CritSect); pUrbOs2->pNext = NULL; pUrbOs2->pPrev = pDevOs2->pTaxingTail; if (pDevOs2->pTaxingTail) pDevOs2->pTaxingTail->pNext = pUrbOs2; else pDevOs2->pTaxingHead = pUrbOs2; pDevOs2->pTaxingTail = pUrbOs2; RTSemEventSignal(pDevOs2->EventSyncWait); Log2(("%s: usbProxyOs2AsyncThread: orc=%d enmStatus=%d cbData=%d!\n", pUrb->pszDesc, orc, pUrb->enmStatus, pUrb->cbData)); NOREF(orc); } else { RTThreadUserReset(Thread); RTCritSectLeave(&pDevOs2->CritSect); /* * Wait for something to do. */ RTThreadUserWait(Thread, 30*1000 /* 30 sec */); RTCritSectEnter(&pDevOs2->CritSect); } } RTCritSectLeave(&pDevOs2->CritSect); if (pvLow) DosFreeMem(pvLow); return VINF_SUCCESS; } /** * Opens the /proc/bus/usb/bus/addr file. * * @returns VBox status code. * @param pProxyDev The device instance. * @param pszAddress The path to the device. * @param pvBackend Backend specific pointer, unused for the linux backend. */ static int usbProxyOs2Open(PUSBPROXYDEV pProxyDev, const char *pszAddress, void *pvBackend) { LogFlow(("usbProxyOs2Open: pProxyDev=%p pszAddress=%s\n", pProxyDev, pszAddress)); int rc; /* * Lazy init. */ #ifdef DYNAMIC_USBCALLS if (!g_pfnUsbOpen) { rc = usbProxyOs2GlobalInit(); if (RT_FAILURE(rc)) return rc; } #else static bool g_fInitialized = false; if (!g_fInitialized) { rc = InitUsbCalls(); if (rc != NO_ERROR) return RTErrConvertFromOS2(rc); g_fInitialized = true; } #endif /* * Parse out the open parameters from the address string. */ uint16_t idProduct = 0; uint16_t idVendor = 0; uint16_t bcdDevice = 0; uint32_t iEnum = 0; const char *psz = pszAddress; do { const char chValue = *psz; AssertReleaseReturn(psz[1] == '=', VERR_INTERNAL_ERROR); uint64_t u64Value; int rc = RTStrToUInt64Ex(psz + 2, (char **)&psz, 0, &u64Value); AssertReleaseRCReturn(rc, rc); AssertReleaseReturn(!*psz || *psz == ';', rc); switch (chValue) { case 'p': idProduct = (uint16_t)u64Value; break; case 'v': idVendor = (uint16_t)u64Value; break; case 'r': bcdDevice = (uint16_t)u64Value; break; case 'e': iEnum = (uint16_t)u64Value; break; default: AssertReleaseMsgFailedReturn(("chValue=%#x\n", chValue), VERR_INTERNAL_ERROR); } if (*psz == ';') psz++; } while (*psz); /* * Try open (acquire) it. */ USBHANDLE hDevice = 0; int urc = rc = g_pfnUsbOpen(&hDevice, idVendor, idProduct, bcdDevice, iEnum); if (!rc) { /* * Allocate and initialize the OS/2 backend data. */ PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)RTMemAllocZ(sizeof(*pDevOs2)); if (pDevOs2) { pDevOs2->hDevice = hDevice; pDevOs2->fTerminate = false; rc = RTCritSectInit(&pDevOs2->CritSect); if (RT_SUCCESS(rc)) { rc = RTSemEventCreate(&pDevOs2->EventSyncWait); if (RT_SUCCESS(rc)) { pProxyDev->Backend.pv = pDevOs2; /** @todo * Determine the active configuration. */ //pProxyDev->cIgnoreSetConfigs = 1; //pProxyDev->iActiveCfg = 1; pProxyDev->cIgnoreSetConfigs = 0; pProxyDev->iActiveCfg = -1; /* * Create the async worker thread and we're done. */ rc = RTThreadCreate(&pDevOs2->Thread, usbProxyOs2AsyncThread, pProxyDev, 0, RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "usbproxy"); if (RT_SUCCESS(rc)) { LogFlow(("usbProxyOs2Open(%p, %s): returns successfully - iActiveCfg=%d\n", pProxyDev, pszAddress, pProxyDev->iActiveCfg)); return VINF_SUCCESS; } /* failure */ RTSemEventDestroy(pDevOs2->EventSyncWait); } RTCritSectDelete(&pDevOs2->CritSect); } RTMemFree(pDevOs2); } else rc = VERR_NO_MEMORY; g_pfnUsbClose(hDevice); } else rc = VERR_VUSB_USBFS_PERMISSION; /** @todo fix me */ Log(("usbProxyOs2Open(%p, %s) failed, rc=%Rrc! urc=%d\n", pProxyDev, pszAddress, rc, urc)); NOREF(urc); pProxyDev->Backend.pv = NULL; NOREF(pvBackend); return rc; } /** * Closes the proxy device. */ static void usbProxyOs2Close(PUSBPROXYDEV pProxyDev) { LogFlow(("usbProxyOs2Close: pProxyDev=%s\n", pProxyDev->pUsbIns->pszName)); PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; Assert(pDevOs2); if (!pDevOs2) return; /* * Tell the thread to terminate. */ ASMAtomicXchgBool(&pDevOs2->fTerminate, true); int rc = RTThreadUserSignal(pDevOs2->Thread); AssertRC(rc); rc = RTThreadWait(pDevOs2->Thread, 60*1000 /* 1 min */, NULL); AssertRC(rc); /* * Now we can free all the resources and close the device. */ RTCritSectDelete(&pDevOs2->CritSect); RTSemEventDestroy(pDevOs2->EventSyncWait); Assert(!pDevOs2->pInFlightHead); Assert(!pDevOs2->pTodoHead); Assert(!pDevOs2->pTodoTail); Assert(!pDevOs2->pTaxingHead); Assert(!pDevOs2->pTaxingTail); PUSBPROXYURBOS2 pUrbOs2; while ((pUrbOs2 = pDevOs2->pFreeHead) != NULL) { pDevOs2->pFreeHead = pUrbOs2->pNext; RTMemFree(pUrbOs2); } g_pfnUsbClose(pDevOs2->hDevice); pDevOs2->hDevice = 0; RTMemFree(pDevOs2); pProxyDev->Backend.pv = NULL; LogFlow(("usbProxyOs2Close: returns\n")); } /** @interface_method_impl{USBPROXYBACK,pfnReset} */ static int usbProxyOs2Reset(PUSBPROXYDEV pProxyDev, bool fResetOnLinux) { return VINF_SUCCESS; } /** * SET_CONFIGURATION. * * The caller makes sure that it's not called first time after open or reset * with the active interface. * * @returns success indicator. * @param pProxyDev The device instance data. * @param iCfg The configuration to set. */ static int usbProxyOs2SetConfig(PUSBPROXYDEV pProxyDev, int iCfg) { PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; LogFlow(("usbProxyOs2SetConfig: pProxyDev=%s cfg=%#x\n", pProxyDev->pUsbIns->pszName, iCfg)); /* * This is sync - bad. */ int rc = g_pfnUsbCtrlMessage(pDevOs2->hDevice, 0x00, /* bmRequestType - ?? */ 0x09, /* bRequest - ?? */ iCfg, /* wValue - configuration */ 0, /* wIndex*/ 0, /* wLength */ NULL, /* pvData */ 50 /* Timeout (ms) */); if (rc) LogFlow(("usbProxyOs2SetConfig: pProxyDev=%s cfg=%#X -> rc=%d\n", pProxyDev->pUsbIns->pszName, iCfg, rc)); return rc == 0; } /** * Claims an interface. * @returns success indicator. */ static int usbProxyOs2ClaimInterface(PUSBPROXYDEV pProxyDev, int iIf) { LogFlow(("usbProxyOs2ClaimInterface: pProxyDev=%s ifnum=%#x\n", pProxyDev->pUsbIns->pszName, iIf)); return true; } /** * Releases an interface. * @returns success indicator. */ static int usbProxyOs2ReleaseInterface(PUSBPROXYDEV pProxyDev, int iIf) { LogFlow(("usbProxyOs2ReleaseInterface: pProxyDev=%s ifnum=%#x\n", pProxyDev->pUsbIns->pszName, iIf)); return true; } /** * SET_INTERFACE. * * @returns success indicator. */ static int usbProxyOs2SetInterface(PUSBPROXYDEV pProxyDev, int iIf, int iAlt) { LogFlow(("usbProxyOs2SetInterface: pProxyDev=%p iIf=%#x iAlt=%#x\n", pProxyDev, iIf, iAlt)); return true; } /** * Clears the halted endpoint 'EndPt'. */ static bool usbProxyOs2ClearHaltedEp(PUSBPROXYDEV pProxyDev, unsigned int EndPt) { PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; LogFlow(("usbProxyOs2ClearHaltedEp: pProxyDev=%s EndPt=%x\n", pProxyDev->pUsbIns->pszName, EndPt)); /* * This is sync - bad. */ int rc = g_pfnUsbCtrlMessage(pDevOs2->hDevice, 0x02, /* bmRequestType - ?? */ 0x01, /* bRequest - ?? */ 0, /* wValue - endpoint halt */ EndPt, /* wIndex - endpoint # */ 0, /* wLength */ NULL, /* pvData */ 50 /* Timeout (ms) */); if (rc) LogFlow(("usbProxyOs2ClearHaltedEp: pProxyDev=%s EndPt=%u -> rc=%d\n", pProxyDev->pUsbIns->pszName, EndPt, rc)); return rc == 0; } /** * @interface_method_impl{USBPROXYBACK,pfnUrbQueue} */ static int usbProxyOs2UrbQueue(PUSBPROXYDEV pProxyDev, PVUSBURB pUrb) { PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; LogFlow(("usbProxyOs2UrbQueue: pProxyDev=%s pUrb=%p EndPt=%d cbData=%d\n", pProxyDev->pUsbIns->pszName, pUrb, pUrb->EndPt, pUrb->cbData)); /* * Quickly validate the input. */ switch (pUrb->enmDir) { case VUSBDIRECTION_IN: case VUSBDIRECTION_OUT: break; default: AssertMsgFailed(("usbProxyOs2UrbQueue: Invalid direction %d\n", pUrb->enmDir)); return false; } switch (pUrb->enmType) { case VUSBXFERTYPE_MSG: break; case VUSBXFERTYPE_BULK: break; /// @todo case VUSBXFERTYPE_INTR: // break; // case VUSBXFERTYPE_ISOC: // break; default: return false; } /* * Allocate an OS/2 urb tracking structure, initialize it, * add it to the todo list, and wake up the async thread. */ PUSBPROXYURBOS2 pUrbOs2 = usbProxyOs2UrbAlloc(pProxyDev); if (!pUrbOs2) return false; pUrbOs2->pUrb = pUrb; RTCritSectEnter(&pDevOs2->CritSect); pUrbOs2->pNext = NULL; pUrbOs2->pPrev = pDevOs2->pTodoTail; if (pDevOs2->pTodoTail) pDevOs2->pTodoTail->pNext = pUrbOs2; else pDevOs2->pTodoHead = pUrbOs2; pDevOs2->pTodoTail = pUrbOs2; RTCritSectLeave(&pDevOs2->CritSect); RTThreadUserSignal(pDevOs2->Thread); return true; } /** * Reap URBs in-flight on a device. * * @returns Pointer to a completed URB. * @returns NULL if no URB was completed. * @param pProxyDev The device. * @param cMillies Number of milliseconds to wait. Use 0 to not wait at all. */ static PVUSBURB usbProxyOs2UrbReap(PUSBPROXYDEV pProxyDev, RTMSINTERVAL cMillies) { PVUSBURB pUrb = NULL; PUSBPROXYDEVOS2 pDevOs2 = (PUSBPROXYDEVOS2)pProxyDev->Backend.pv; RTCritSectEnter(&pDevOs2->CritSect); for (;;) { /* * Any URBs pending delivery? */ PUSBPROXYURBOS2 pUrbOs2 = pDevOs2->pTaxingHead; if (pUrbOs2) { pUrb = pUrbOs2->pUrb; usbProxyOs2UrbFree(pProxyDev, pUrbOs2); break; } /* * Block for something to completed, if requested and sensible. */ if (!cMillies) break; if ( !pDevOs2->pInFlightHead && !pDevOs2->pTodoHead) break; RTCritSectLeave(&pDevOs2->CritSect); int rc = RTSemEventWait(pDevOs2->EventSyncWait, cMillies); Assert(RT_SUCCESS(rc) || rc == VERR_TIMEOUT); NOREF(rc); cMillies = 0; RTCritSectEnter(&pDevOs2->CritSect); } RTCritSectLeave(&pDevOs2->CritSect); LogFlow(("usbProxyOs2UrbReap: dev=%s returns %p\n", pProxyDev->pUsbIns->pszName, pUrb)); return pUrb; } /** * Cancels the URB. * The URB requires reaping, so we don't change its state. */ static void usbProxyOs2UrbCancel(PVUSBURB pUrb) { #if 0 PUSBPROXYDEV pProxyDev = (PUSBPROXYDEV)pUrb->pDev; PUSBPROXYURBOS2 pUrbOs2 = (PUSBPROXYURBOS2)pUrb->Dev.pvProxyUrb; if (pUrbOs2->pSplitHead) { /* split */ Assert(pUrbOs2 == pUrbOs2->pSplitHead); for (PUSBPROXYURBOS2 pCur = pUrbOs2; pCur; pCur = pCur->pSplitNext) { if (pCur->fSplitElementReaped) continue; if ( !usbProxyOs2DoIoCtl(pProxyDev, USBDEVFS_DISCARDURB, &pCur->KUrb, true, UINT32_MAX) || errno == ENOENT) continue; if (errno == ENODEV) break; Log(("usb-linux: Discard URB %p failed, errno=%d. pProxyDev=%s!!! (split)\n", pUrb, errno, pProxyDev->pUsbIns->pszName)); } } else { /* unsplit */ if ( usbProxyOs2DoIoCtl(pProxyDev, USBDEVFS_DISCARDURB, &pUrbOs2->KUrb, true, UINT32_MAX) && errno != ENODEV /* deal with elsewhere. */ && errno != ENOENT) Log(("usb-linux: Discard URB %p failed, errno=%d. pProxyDev=%s!!!\n", pUrb, errno, pProxyDev->pUsbIns->pszName)); } #endif } /** * The Linux USB Proxy Backend. */ extern const USBPROXYBACK g_USBProxyDeviceHost = { "host", usbProxyOs2Open, NULL, usbProxyOs2Close, usbProxyOs2Reset, usbProxyOs2SetConfig, usbProxyOs2ClaimInterface, usbProxyOs2ReleaseInterface, usbProxyOs2SetInterface, usbProxyOs2ClearHaltedEp, usbProxyOs2UrbQueue, usbProxyOs2UrbCancel, usbProxyOs2UrbReap, 0 };