diff options
Diffstat (limited to 'src/VBox/Devices/USB/win')
| -rw-r--r-- | src/VBox/Devices/USB/win/Makefile.kup | 0 | ||||
| -rw-r--r-- | src/VBox/Devices/USB/win/USBProxyDevice-win.cpp | 778 |
2 files changed, 778 insertions, 0 deletions
diff --git a/src/VBox/Devices/USB/win/Makefile.kup b/src/VBox/Devices/USB/win/Makefile.kup new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/src/VBox/Devices/USB/win/Makefile.kup diff --git a/src/VBox/Devices/USB/win/USBProxyDevice-win.cpp b/src/VBox/Devices/USB/win/USBProxyDevice-win.cpp new file mode 100644 index 00000000..60ff5976 --- /dev/null +++ b/src/VBox/Devices/USB/win/USBProxyDevice-win.cpp @@ -0,0 +1,778 @@ +/* $Id: USBProxyDevice-win.cpp $ */ +/** @file + * USBPROXY - USB proxy, Win32 backend + */ + +/* + * Copyright (C) 2006-2019 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. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_DRV_USBPROXY +#include <iprt/win/windows.h> + +#include <VBox/vmm/pdm.h> +#include <VBox/err.h> +#include <VBox/usb.h> +#include <VBox/log.h> +#include <iprt/assert.h> +#include <iprt/alloc.h> +#include <iprt/err.h> +#include <iprt/string.h> +#include <iprt/thread.h> +#include <iprt/asm.h> +#include "../USBProxyDevice.h" +#include <VBox/usblib.h> + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +typedef struct _QUEUED_URB +{ + PVUSBURB urb; + + USBSUP_URB urbwin; + OVERLAPPED overlapped; + DWORD cbReturned; + bool fCancelled; +} QUEUED_URB, *PQUEUED_URB; + +typedef struct +{ + /* Critical section to protect this structure. */ + RTCRITSECT CritSect; + HANDLE hDev; + uint8_t bInterfaceNumber; + bool fClaimed; + /** The allocated size of paHandles and paQueuedUrbs. */ + unsigned cAllocatedUrbs; + /** The number of URBs in the array. */ + unsigned cQueuedUrbs; + /** Array of pointers to the in-flight URB structures. */ + PQUEUED_URB *paQueuedUrbs; + /** Array of handles, this is parallel to paQueuedUrbs. */ + PHANDLE paHandles; + /* Event sempahore to wakeup the reaper thead. */ + HANDLE hEventWakeup; + /** Number of queued URBs waiting to get into the handle list. */ + unsigned cPendingUrbs; + /** Array of pending URBs. */ + PQUEUED_URB aPendingUrbs[64]; +} PRIV_USBW32, *PPRIV_USBW32; + +/* All functions are returning 1 on success, 0 on error */ + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +static int usbProxyWinSetInterface(PUSBPROXYDEV p, int iIf, int setting); + +/** + * Converts the given Windows error code to VBox handling unplugged devices. + * + * @returns VBox status code. + * @param pProxDev The USB proxy device instance. + * @param dwErr Windows error code. + */ +static int usbProxyWinHandleUnpluggedDevice(PUSBPROXYDEV pProxyDev, DWORD dwErr) +{ +#ifdef LOG_ENABLED + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); +#endif + + if ( dwErr == ERROR_INVALID_HANDLE_STATE + || dwErr == ERROR_BAD_COMMAND) + { + Log(("usbproxy: device %x unplugged!!\n", pPriv->hDev)); + pProxyDev->fDetached = true; + } + else + AssertMsgFailed(("lasterr=%d\n", dwErr)); + return RTErrConvertFromWin32(dwErr); +} + +/** + * Open a USB device and create a backend instance for it. + * + * @returns VBox status code. + */ +static DECLCALLBACK(int) usbProxyWinOpen(PUSBPROXYDEV pProxyDev, const char *pszAddress, void *pvBackend) +{ + RT_NOREF(pvBackend); + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + + int rc = VINF_SUCCESS; + pPriv->cAllocatedUrbs = 32; + pPriv->paHandles = (PHANDLE)RTMemAllocZ(sizeof(pPriv->paHandles[0]) * pPriv->cAllocatedUrbs); + pPriv->paQueuedUrbs = (PQUEUED_URB *)RTMemAllocZ(sizeof(pPriv->paQueuedUrbs[0]) * pPriv->cAllocatedUrbs); + if ( pPriv->paQueuedUrbs + && pPriv->paHandles) + { + /* + * Open the device. + */ + pPriv->hDev = CreateFile(pszAddress, + GENERIC_READ | GENERIC_WRITE, + FILE_SHARE_WRITE | FILE_SHARE_READ, + NULL, // no SECURITY_ATTRIBUTES structure + OPEN_EXISTING, // No special create flags + FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, // overlapped IO + NULL); // No template file + if (pPriv->hDev != INVALID_HANDLE_VALUE) + { + Log(("usbProxyWinOpen: hDev=%p\n", pPriv->hDev)); + + /* + * Check the version + */ + USBSUP_VERSION version = {0}; + DWORD cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_GET_VERSION, NULL, 0, &version, sizeof(version), &cbReturned, NULL)) + { + if ( version.u32Major == USBDRV_MAJOR_VERSION +#if USBDRV_MINOR_VERSION != 0 + && version.u32Minor >= USBDRV_MINOR_VERSION +#endif + ) + { + USBSUP_CLAIMDEV in; + in.bInterfaceNumber = 0; + + cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_CLAIM_DEVICE, &in, sizeof(in), &in, sizeof(in), &cbReturned, NULL)) + { + if (in.fClaimed) + { + pPriv->fClaimed = true; +#if 0 /** @todo this needs to be enabled if windows chooses a default config. Test with the TrekStor GO Stick. */ + pProxyDev->iActiveCfg = 1; + pProxyDev->cIgnoreSetConfigs = 1; +#endif + + rc = RTCritSectInit(&pPriv->CritSect); + AssertRC(rc); + pPriv->hEventWakeup = CreateEvent(NULL, FALSE, FALSE, NULL); + Assert(pPriv->hEventWakeup); + + pPriv->paHandles[0] = pPriv->hEventWakeup; + + return VINF_SUCCESS; + } + + rc = VERR_GENERAL_FAILURE; + Log(("usbproxy: unable to claim device %x (%s)!!\n", pPriv->hDev, pszAddress)); + } + } + else + { + rc = VERR_VERSION_MISMATCH; + Log(("usbproxy: Version mismatch: %d.%d != %d.%d (cur)\n", + version.u32Major, version.u32Minor, USBDRV_MAJOR_VERSION, USBDRV_MINOR_VERSION)); + } + } + + /* Convert last error if necessary */ + if (RT_SUCCESS(rc)) + { + DWORD dwErr = GetLastError(); + Log(("usbproxy: last error %d\n", dwErr)); + rc = RTErrConvertFromWin32(dwErr); + } + + CloseHandle(pPriv->hDev); + pPriv->hDev = INVALID_HANDLE_VALUE; + } + else + { + Log(("usbproxy: FAILED to open '%s'! last error %d\n", pszAddress, GetLastError())); + rc = VERR_FILE_NOT_FOUND; + } + } + else + rc = VERR_NO_MEMORY; + + RTMemFree(pPriv->paQueuedUrbs); + RTMemFree(pPriv->paHandles); + return rc; +} + +/** + * Copy the device and free resources associated with the backend. + */ +static DECLCALLBACK(void) usbProxyWinClose(PUSBPROXYDEV pProxyDev) +{ + /* Here we just close the device and free up p->priv + * there is no need to do anything like cancel outstanding requests + * that will have been done already + */ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + Assert(pPriv); + if (!pPriv) + return; + Log(("usbProxyWinClose: %p\n", pPriv->hDev)); + + if (pPriv->hDev != INVALID_HANDLE_VALUE) + { + Assert(pPriv->fClaimed); + + USBSUP_RELEASEDEV in; + DWORD cbReturned = 0; + in.bInterfaceNumber = pPriv->bInterfaceNumber; + if (!DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_RELEASE_DEVICE, &in, sizeof(in), NULL, 0, &cbReturned, NULL)) + { + Log(("usbproxy: usbProxyWinClose: DeviceIoControl %#x failed with %#x!!\n", pPriv->hDev, GetLastError())); + } + if (!CloseHandle(pPriv->hDev)) + AssertLogRelMsgFailed(("usbproxy: usbProxyWinClose: CloseHandle %#x failed with %#x!!\n", pPriv->hDev, GetLastError())); + pPriv->hDev = INVALID_HANDLE_VALUE; + } + + CloseHandle(pPriv->hEventWakeup); + RTCritSectDelete(&pPriv->CritSect); + + RTMemFree(pPriv->paQueuedUrbs); + RTMemFree(pPriv->paHandles); +} + + +static DECLCALLBACK(int) usbProxyWinReset(PUSBPROXYDEV pProxyDev, bool fResetOnLinux) +{ + RT_NOREF(fResetOnLinux); + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + DWORD cbReturned; + int rc; + + Assert(pPriv); + + Log(("usbproxy: Reset %x\n", pPriv->hDev)); + + /* Here we just need to assert reset signalling on the USB device */ + cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_RESET, NULL, 0, NULL, 0, &cbReturned, NULL)) + { +#if 0 /** @todo this needs to be enabled if windows chooses a default config. Test with the TrekStor GO Stick. */ + pProxyDev->iActiveCfg = 1; + pProxyDev->cIgnoreSetConfigs = 2; +#else + pProxyDev->iActiveCfg = -1; + pProxyDev->cIgnoreSetConfigs = 0; +#endif + return VINF_SUCCESS; + } + + rc = GetLastError(); + if (rc == ERROR_DEVICE_REMOVED) + { + Log(("usbproxy: device %p unplugged!!\n", pPriv->hDev)); + pProxyDev->fDetached = true; + } + return RTErrConvertFromWin32(rc); +} + +static DECLCALLBACK(int) usbProxyWinSetConfig(PUSBPROXYDEV pProxyDev, int cfg) +{ + /* Send a SET_CONFIGURATION command to the device. We don't do this + * as a normal control message, because the OS might not want to + * be left out of the loop on such a thing. + * + * It would be OK to send a SET_CONFIGURATION control URB at this + * point but it has to be synchronous. + */ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + USBSUP_SET_CONFIG in; + DWORD cbReturned; + + Assert(pPriv); + + Log(("usbproxy: Set config of %p to %d\n", pPriv->hDev, cfg)); + in.bConfigurationValue = cfg; + + /* Here we just need to assert reset signalling on the USB device */ + cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_SET_CONFIG, &in, sizeof(in), NULL, 0, &cbReturned, NULL)) + return VINF_SUCCESS; + + return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError()); +} + +static DECLCALLBACK(int) usbProxyWinClaimInterface(PUSBPROXYDEV pProxyDev, int iIf) +{ + /* Called just before we use an interface. Needed on Linux to claim + * the interface from the OS, since even when proxying the host OS + * might want to allow other programs to use the unused interfaces. + * Not relevant for Windows. + */ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + + pPriv->bInterfaceNumber = iIf; + + Assert(pPriv); + return VINF_SUCCESS; +} + +static DECLCALLBACK(int) usbProxyWinReleaseInterface(PUSBPROXYDEV pProxyDev, int iIf) +{ + RT_NOREF(pProxyDev, iIf); + /* The opposite of claim_interface. */ + return VINF_SUCCESS; +} + +static DECLCALLBACK(int) usbProxyWinSetInterface(PUSBPROXYDEV pProxyDev, int iIf, int setting) +{ + /* Select an alternate setting for an interface, the same applies + * here as for set_config, you may convert this in to a control + * message if you want but it must be synchronous + */ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + USBSUP_SELECT_INTERFACE in; + DWORD cbReturned; + + Assert(pPriv); + + Log(("usbproxy: Select interface of %x to %d/%d\n", pPriv->hDev, iIf, setting)); + in.bInterfaceNumber = iIf; + in.bAlternateSetting = setting; + + /* Here we just need to assert reset signalling on the USB device */ + cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_SELECT_INTERFACE, &in, sizeof(in), NULL, 0, &cbReturned, NULL)) + return VINF_SUCCESS; + + return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError()); +} + +/** + * Clears the halted endpoint 'ep'. + */ +static DECLCALLBACK(int) usbProxyWinClearHaltedEndPt(PUSBPROXYDEV pProxyDev, unsigned int ep) +{ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + USBSUP_CLEAR_ENDPOINT in; + DWORD cbReturned; + + Assert(pPriv); + + Log(("usbproxy: Clear endpoint %d of %x\n", ep, pPriv->hDev)); + in.bEndpoint = ep; + + cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_CLEAR_ENDPOINT, &in, sizeof(in), NULL, 0, &cbReturned, NULL)) + return VINF_SUCCESS; + + return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError()); +} + +/** + * Aborts a pipe/endpoint (cancels all outstanding URBs on the endpoint). + */ +static int usbProxyWinAbortEndPt(PUSBPROXYDEV pProxyDev, unsigned int ep) +{ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + USBSUP_CLEAR_ENDPOINT in; + DWORD cbReturned; + + Assert(pPriv); + + Log(("usbproxy: Abort endpoint %d of %x\n", ep, pPriv->hDev)); + in.bEndpoint = ep; + + cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_ABORT_ENDPOINT, &in, sizeof(in), NULL, 0, &cbReturned, NULL)) + return VINF_SUCCESS; + + return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError()); +} + +/** + * @interface_method_impl{USBPROXYBACK,pfnUrbQueue} + */ +static DECLCALLBACK(int) usbProxyWinUrbQueue(PUSBPROXYDEV pProxyDev, PVUSBURB pUrb) +{ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + Assert(pPriv); + + /* Don't even bother if we can't wait for that many objects. */ + if (pPriv->cPendingUrbs + pPriv->cQueuedUrbs >= (MAXIMUM_WAIT_OBJECTS - 1)) + return VERR_OUT_OF_RESOURCES; + if (pPriv->cPendingUrbs >= RT_ELEMENTS(pPriv->aPendingUrbs)) + return VERR_OUT_OF_RESOURCES; + + /* + * Allocate and initialize a URB queue structure. + */ + /** @todo pool these */ + PQUEUED_URB pQUrbWin = (PQUEUED_URB)RTMemAllocZ(sizeof(QUEUED_URB)); + if (!pQUrbWin) + return VERR_NO_MEMORY; + + switch (pUrb->enmType) + { + case VUSBXFERTYPE_CTRL: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_CTRL; break; /* you won't ever see these */ + case VUSBXFERTYPE_ISOC: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_ISOC; + pQUrbWin->urbwin.numIsoPkts = pUrb->cIsocPkts; + for (unsigned i = 0; i < pUrb->cIsocPkts; ++i) + { + pQUrbWin->urbwin.aIsoPkts[i].cb = pUrb->aIsocPkts[i].cb; + pQUrbWin->urbwin.aIsoPkts[i].off = pUrb->aIsocPkts[i].off; + pQUrbWin->urbwin.aIsoPkts[i].stat = USBSUP_XFER_OK; + } + break; + case VUSBXFERTYPE_BULK: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_BULK; break; + case VUSBXFERTYPE_INTR: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_INTR; break; + case VUSBXFERTYPE_MSG: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_MSG; break; + default: + AssertMsgFailed(("Invalid type %d\n", pUrb->enmType)); + return VERR_INVALID_PARAMETER; + } + + switch (pUrb->enmDir) + { + case VUSBDIRECTION_SETUP: + AssertFailed(); + pQUrbWin->urbwin.dir = USBSUP_DIRECTION_SETUP; + break; + case VUSBDIRECTION_IN: + pQUrbWin->urbwin.dir = USBSUP_DIRECTION_IN; + break; + case VUSBDIRECTION_OUT: + pQUrbWin->urbwin.dir = USBSUP_DIRECTION_OUT; + break; + default: + AssertMsgFailed(("Invalid direction %d\n", pUrb->enmDir)); + return VERR_INVALID_PARAMETER; + } + + Log(("usbproxy: Queue URB %p ep=%d cbData=%d abData=%p cIsocPkts=%d\n", pUrb, pUrb->EndPt, pUrb->cbData, pUrb->abData, pUrb->cIsocPkts)); + + pQUrbWin->urb = pUrb; + pQUrbWin->urbwin.ep = pUrb->EndPt; + pQUrbWin->urbwin.len = pUrb->cbData; + pQUrbWin->urbwin.buf = pUrb->abData; + pQUrbWin->urbwin.error = USBSUP_XFER_OK; + pQUrbWin->urbwin.flags = USBSUP_FLAG_NONE; + if (pUrb->enmDir == VUSBDIRECTION_IN && !pUrb->fShortNotOk) + pQUrbWin->urbwin.flags = USBSUP_FLAG_SHORT_OK; + + int rc = VINF_SUCCESS; + pQUrbWin->overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); + if (pQUrbWin->overlapped.hEvent != INVALID_HANDLE_VALUE) + { + pUrb->Dev.pvPrivate = pQUrbWin; + + if ( DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_SEND_URB, + &pQUrbWin->urbwin, sizeof(pQUrbWin->urbwin), + &pQUrbWin->urbwin, sizeof(pQUrbWin->urbwin), + &pQUrbWin->cbReturned, &pQUrbWin->overlapped) + || GetLastError() == ERROR_IO_PENDING) + { + /* insert into the queue */ + RTCritSectEnter(&pPriv->CritSect); + unsigned j = pPriv->cPendingUrbs; + Assert(j < RT_ELEMENTS(pPriv->aPendingUrbs)); + pPriv->aPendingUrbs[j] = pQUrbWin; + pPriv->cPendingUrbs++; + RTCritSectLeave(&pPriv->CritSect); + SetEvent(pPriv->hEventWakeup); + return VINF_SUCCESS; + } + else + { + DWORD dwErr = GetLastError(); + if ( dwErr == ERROR_INVALID_HANDLE_STATE + || dwErr == ERROR_BAD_COMMAND) + { + Log(("usbproxy: device %p unplugged!!\n", pPriv->hDev)); + pProxyDev->fDetached = true; + } + else + AssertMsgFailed(("dwErr=%X urbwin.error=%d (submit urb)\n", dwErr, pQUrbWin->urbwin.error)); + rc = RTErrConvertFromWin32(dwErr); + CloseHandle(pQUrbWin->overlapped.hEvent); + pQUrbWin->overlapped.hEvent = INVALID_HANDLE_VALUE; + } + } +#ifdef DEBUG_misha + else + { + AssertMsgFailed(("FAILED!!, hEvent(0x%p)\n", pQUrbWin->overlapped.hEvent)); + rc = VERR_NO_MEMORY; + } +#endif + + Assert(pQUrbWin->overlapped.hEvent == INVALID_HANDLE_VALUE); + RTMemFree(pQUrbWin); + return rc; +} + +/** + * Convert Windows proxy URB status to VUSB status. + * + * @returns VUSB status constant. + * @param win_status Windows USB proxy status constant. + */ +static VUSBSTATUS usbProxyWinStatusToVUsbStatus(USBSUP_ERROR win_status) +{ + VUSBSTATUS vusb_status; + + switch (win_status) + { + case USBSUP_XFER_OK: vusb_status = VUSBSTATUS_OK; break; + case USBSUP_XFER_STALL: vusb_status = VUSBSTATUS_STALL; break; + case USBSUP_XFER_DNR: vusb_status = VUSBSTATUS_DNR; break; + case USBSUP_XFER_CRC: vusb_status = VUSBSTATUS_CRC; break; + case USBSUP_XFER_NAC: vusb_status = VUSBSTATUS_NOT_ACCESSED; break; + case USBSUP_XFER_UNDERRUN: vusb_status = VUSBSTATUS_DATA_UNDERRUN; break; + case USBSUP_XFER_OVERRUN: vusb_status = VUSBSTATUS_DATA_OVERRUN; break; + default: + AssertMsgFailed(("USB: Invalid error %d\n", win_status)); + vusb_status = VUSBSTATUS_DNR; + break; + } + return vusb_status; +} + +/** + * 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 DECLCALLBACK(PVUSBURB) usbProxyWinUrbReap(PUSBPROXYDEV pProxyDev, RTMSINTERVAL cMillies) +{ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + AssertReturn(pPriv, NULL); + + /* + * There are some unnecessary calls, just return immediately or + * WaitForMultipleObjects will fail. + */ + if ( pPriv->cQueuedUrbs <= 0 + && pPriv->cPendingUrbs == 0) + { + if ( cMillies != 0 + && pPriv->cPendingUrbs == 0) + { + /* Wait for the wakeup call. */ + DWORD cMilliesWait = cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies; + DWORD dwRc = WaitForMultipleObjects(1, &pPriv->hEventWakeup, FALSE, cMilliesWait); + NOREF(dwRc); + } + + return NULL; + } + +again: + /* Check for pending URBs. */ + if (pPriv->cPendingUrbs) + { + RTCritSectEnter(&pPriv->CritSect); + + /* Ensure we've got sufficient space in the arrays. */ + if (pPriv->cQueuedUrbs + pPriv->cPendingUrbs + 1 > pPriv->cAllocatedUrbs) + { + unsigned cNewMax = pPriv->cAllocatedUrbs + pPriv->cPendingUrbs + 1; + void *pv = RTMemRealloc(pPriv->paHandles, sizeof(pPriv->paHandles[0]) * (cNewMax + 1)); /* One extra for the wakeup event. */ + if (!pv) + { + AssertMsgFailed(("RTMemRealloc failed for paHandles[%d]", cNewMax)); + //break; + } + pPriv->paHandles = (PHANDLE)pv; + + pv = RTMemRealloc(pPriv->paQueuedUrbs, sizeof(pPriv->paQueuedUrbs[0]) * cNewMax); + if (!pv) + { + AssertMsgFailed(("RTMemRealloc failed for paQueuedUrbs[%d]", cNewMax)); + //break; + } + pPriv->paQueuedUrbs = (PQUEUED_URB *)pv; + pPriv->cAllocatedUrbs = cNewMax; + } + + /* Copy the pending URBs over. */ + for (unsigned i = 0; i < pPriv->cPendingUrbs; i++) + { + pPriv->paHandles[pPriv->cQueuedUrbs + i] = pPriv->aPendingUrbs[i]->overlapped.hEvent; + pPriv->paQueuedUrbs[pPriv->cQueuedUrbs + i] = pPriv->aPendingUrbs[i]; + } + pPriv->cQueuedUrbs += pPriv->cPendingUrbs; + pPriv->cPendingUrbs = 0; + pPriv->paHandles[pPriv->cQueuedUrbs] = pPriv->hEventWakeup; + pPriv->paHandles[pPriv->cQueuedUrbs + 1] = INVALID_HANDLE_VALUE; + + RTCritSectLeave(&pPriv->CritSect); + } + + /* + * Wait/poll. + * + * ASSUMPTIONS: + * 1. The usbProxyWinUrbReap can not be run concurrently with each other + * so racing the cQueuedUrbs access/modification can not occur. + * 2. The usbProxyWinUrbReap can not be run concurrently with + * usbProxyWinUrbQueue so they can not race the pPriv->paHandles + * access/realloc. + */ + unsigned cQueuedUrbs = ASMAtomicReadU32((volatile uint32_t *)&pPriv->cQueuedUrbs); + DWORD cMilliesWait = cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies; + PVUSBURB pUrb = NULL; + DWORD rc = WaitForMultipleObjects(cQueuedUrbs + 1, pPriv->paHandles, FALSE, cMilliesWait); + + /* If the wakeup event fired return immediately. */ + if (rc == WAIT_OBJECT_0 + cQueuedUrbs) + { + if (pPriv->cPendingUrbs) + goto again; + return NULL; + } + + AssertCompile(WAIT_OBJECT_0 == 0); + if (/*rc >= WAIT_OBJECT_0 && */ rc < WAIT_OBJECT_0 + cQueuedUrbs) + { + RTCritSectEnter(&pPriv->CritSect); + unsigned iUrb = rc - WAIT_OBJECT_0; + PQUEUED_URB pQUrbWin = pPriv->paQueuedUrbs[iUrb]; + pUrb = pQUrbWin->urb; + + /* + * Remove it from the arrays. + */ + cQueuedUrbs = --pPriv->cQueuedUrbs; + if (cQueuedUrbs != iUrb) + { + /* Move the array forward */ + for (unsigned i=iUrb;i<cQueuedUrbs;i++) + { + pPriv->paHandles[i] = pPriv->paHandles[i+1]; + pPriv->paQueuedUrbs[i] = pPriv->paQueuedUrbs[i+1]; + } + } + pPriv->paHandles[cQueuedUrbs] = pPriv->hEventWakeup; + pPriv->paHandles[cQueuedUrbs + 1] = INVALID_HANDLE_VALUE; + pPriv->paQueuedUrbs[cQueuedUrbs] = NULL; + RTCritSectLeave(&pPriv->CritSect); + Assert(cQueuedUrbs == pPriv->cQueuedUrbs); + + /* + * Update the urb. + */ + pUrb->enmStatus = usbProxyWinStatusToVUsbStatus(pQUrbWin->urbwin.error); + pUrb->cbData = (uint32_t)pQUrbWin->urbwin.len; + if (pUrb->enmType == VUSBXFERTYPE_ISOC) + { + for (unsigned i = 0; i < pUrb->cIsocPkts; ++i) + { + /* NB: Windows won't change the packet offsets, but the packets may + * be only partially filled or completely empty. + */ + pUrb->aIsocPkts[i].enmStatus = usbProxyWinStatusToVUsbStatus(pQUrbWin->urbwin.aIsoPkts[i].stat); + pUrb->aIsocPkts[i].cb = pQUrbWin->urbwin.aIsoPkts[i].cb; + } + } + Log(("usbproxy: pUrb=%p (#%d) ep=%d cbData=%d status=%d cIsocPkts=%d ready\n", + pUrb, rc - WAIT_OBJECT_0, pQUrbWin->urb->EndPt, pQUrbWin->urb->cbData, pUrb->enmStatus, pUrb->cIsocPkts)); + + /* free the urb queuing structure */ + if (pQUrbWin->overlapped.hEvent != INVALID_HANDLE_VALUE) + { + CloseHandle(pQUrbWin->overlapped.hEvent); + pQUrbWin->overlapped.hEvent = INVALID_HANDLE_VALUE; + } + RTMemFree(pQUrbWin); + } + else if ( rc == WAIT_FAILED + || (rc >= WAIT_ABANDONED_0 && rc < WAIT_ABANDONED_0 + cQueuedUrbs)) + AssertMsgFailed(("USB: WaitForMultipleObjects %d objects failed with rc=%d and last error %d\n", cQueuedUrbs, rc, GetLastError())); + + return pUrb; +} + + +/** + * Cancels an in-flight URB. + * + * The URB requires reaping, so we don't change its state. + * + * @remark There isn't a way to cancel a specific URB on Windows. + * on darwin. The interface only supports the aborting of + * all URBs pending on an endpoint. Luckily that is usually + * exactly what the guest wants to do. + */ +static DECLCALLBACK(int) usbProxyWinUrbCancel(PUSBPROXYDEV pProxyDev, PVUSBURB pUrb) +{ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + PQUEUED_URB pQUrbWin = (PQUEUED_URB)pUrb->Dev.pvPrivate; + USBSUP_CLEAR_ENDPOINT in; + DWORD cbReturned; + + AssertPtrReturn(pQUrbWin, VERR_INVALID_PARAMETER); + + in.bEndpoint = pUrb->EndPt | (pUrb->enmDir == VUSBDIRECTION_IN ? 0x80 : 0); + Log(("usbproxy: Cancel urb %p, endpoint %x\n", pUrb, in.bEndpoint)); + + cbReturned = 0; + if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_ABORT_ENDPOINT, &in, sizeof(in), NULL, 0, &cbReturned, NULL)) + return VINF_SUCCESS; + + DWORD dwErr = GetLastError(); + if ( dwErr == ERROR_INVALID_HANDLE_STATE + || dwErr == ERROR_BAD_COMMAND) + { + Log(("usbproxy: device %x unplugged!!\n", pPriv->hDev)); + pProxyDev->fDetached = true; + return VINF_SUCCESS; /* Fake success and deal with the unplugged device elsewhere. */ + } + + AssertMsgFailed(("lastErr=%ld\n", dwErr)); + return RTErrConvertFromWin32(dwErr); +} + +static DECLCALLBACK(int) usbProxyWinWakeup(PUSBPROXYDEV pProxyDev) +{ + PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32); + + SetEvent(pPriv->hEventWakeup); + return VINF_SUCCESS; +} + +/** + * The Win32 USB Proxy Backend. + */ +extern const USBPROXYBACK g_USBProxyDeviceHost = +{ + /* pszName */ + "host", + /* cbBackend */ + sizeof(PRIV_USBW32), + usbProxyWinOpen, + NULL, + usbProxyWinClose, + usbProxyWinReset, + usbProxyWinSetConfig, + usbProxyWinClaimInterface, + usbProxyWinReleaseInterface, + usbProxyWinSetInterface, + usbProxyWinClearHaltedEndPt, + usbProxyWinUrbQueue, + usbProxyWinUrbCancel, + usbProxyWinUrbReap, + usbProxyWinWakeup, + 0 +}; + |