diff options
Diffstat (limited to 'src/VBox/Devices/USB/os2/USBProxyDevice-os2.cpp')
| -rw-r--r-- | src/VBox/Devices/USB/os2/USBProxyDevice-os2.cpp | 879 |
1 files changed, 879 insertions, 0 deletions
diff --git a/src/VBox/Devices/USB/os2/USBProxyDevice-os2.cpp b/src/VBox/Devices/USB/os2/USBProxyDevice-os2.cpp new file mode 100644 index 00000000..3b1997e2 --- /dev/null +++ b/src/VBox/Devices/USB/os2/USBProxyDevice-os2.cpp @@ -0,0 +1,879 @@ +/* $Id: USBProxyDevice-os2.cpp $ */ +/** @file + * USB device proxy - the Linux backend. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_DRV_USBPROXY +#include <VBox/vmm/pdm.h> +#include <VBox/err.h> +#include <VBox/log.h> +#include <iprt/assert.h> +#include <iprt/stream.h> +#include <iprt/alloc.h> +#include <iprt/thread.h> +#include <iprt/time.h> +#include <iprt/asm.h> +#include <iprt/string.h> +#include <iprt/semaphore.h> +#include <iprt/file.h> +#include "../USBProxyDevice.h" + +#define INCL_BASE +#define INCL_ERRORS +#include <os2.h> +#include <usbcalls.h> + + +/********************************************************************************************************************************* +* 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. + */ +static int usbProxyOs2Open(PUSBPROXYDEV pProxyDev, const char *pszAddress) +{ + 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 +}; + |