diff options
Diffstat (limited to 'src/VBox/Devices/USB/USBProxyDevice.cpp')
| -rw-r--r-- | src/VBox/Devices/USB/USBProxyDevice.cpp | 1328 |
1 files changed, 1328 insertions, 0 deletions
diff --git a/src/VBox/Devices/USB/USBProxyDevice.cpp b/src/VBox/Devices/USB/USBProxyDevice.cpp new file mode 100644 index 00000000..66c1452b --- /dev/null +++ b/src/VBox/Devices/USB/USBProxyDevice.cpp @@ -0,0 +1,1328 @@ +/* $Id: USBProxyDevice.cpp $ */ +/** @file + * USBProxy - USB device proxy. + */ + +/* + * 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 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_DRV_USBPROXY +#include <VBox/usb.h> +#include <VBox/usbfilter.h> +#include <VBox/vmm/pdm.h> +#include <VBox/err.h> +#include <iprt/alloc.h> +#include <iprt/string.h> +#include <VBox/log.h> +#include <iprt/assert.h> +#include "USBProxyDevice.h" +#include "VUSBInternal.h" +#include "VBoxDD.h" + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** A dummy name used early during the construction phase to avoid log crashes. */ +static char g_szDummyName[] = "proxy xxxx:yyyy"; + +/** + * Array of supported proxy backends. + */ +static PCUSBPROXYBACK g_aUsbProxies[] = +{ + &g_USBProxyDeviceHost, + &g_USBProxyDeviceVRDP, + &g_USBProxyDeviceUsbIp +}; + +/* Synchronously obtain a standard USB descriptor for a device, used in order + * to grab configuration descriptors when we first add the device + */ +static void *GetStdDescSync(PUSBPROXYDEV pProxyDev, uint8_t iDescType, uint8_t iIdx, uint16_t LangId, uint16_t cbHint) +{ +#define GET_DESC_RETRIES 6 + int cRetries = 0; + uint16_t cbInitialHint = cbHint; + + LogFlow(("GetStdDescSync: pProxyDev=%s, iDescType=%d, iIdx=%d, LangId=%04X, cbHint=%u\n", pProxyDev->pUsbIns->pszName, iDescType, iIdx, LangId, cbHint)); + for (;;) + { + /* + * Setup a MSG URB, queue and reap it. + */ + int rc = VINF_SUCCESS; + VUSBURB Urb; + AssertCompile(RT_SIZEOFMEMB(VUSBURB, abData) >= _4K); + RT_ZERO(Urb); + Urb.u32Magic = VUSBURB_MAGIC; + Urb.enmState = VUSBURBSTATE_IN_FLIGHT; + Urb.pszDesc = (char*)"URB sync"; + Urb.DstAddress = 0; + Urb.EndPt = 0; + Urb.enmType = VUSBXFERTYPE_MSG; + Urb.enmDir = VUSBDIRECTION_IN; + Urb.fShortNotOk = false; + Urb.enmStatus = VUSBSTATUS_INVALID; + cbHint = RT_MIN(cbHint, sizeof(Urb.abData) - sizeof(VUSBSETUP)); + Urb.cbData = cbHint + sizeof(VUSBSETUP); + + PVUSBSETUP pSetup = (PVUSBSETUP)Urb.abData; + pSetup->bmRequestType = VUSB_DIR_TO_HOST | VUSB_REQ_STANDARD | VUSB_TO_DEVICE; + pSetup->bRequest = VUSB_REQ_GET_DESCRIPTOR; + pSetup->wValue = (iDescType << 8) | iIdx; + pSetup->wIndex = LangId; + pSetup->wLength = cbHint; + + uint8_t *pbDesc = (uint8_t *)(pSetup + 1); + uint32_t cbDesc = 0; + PVUSBURB pUrbReaped = NULL; + + rc = pProxyDev->pOps->pfnUrbQueue(pProxyDev, &Urb); + if (RT_FAILURE(rc)) + { + Log(("GetStdDescSync: pfnUrbQueue failed, rc=%d\n", rc)); + goto err; + } + + /* Don't wait forever, it's just a simple request that should + return immediately. Since we're executing in the EMT thread + it's important not to get stuck here. (Some of the builtin + iMac devices may refuse to respond for instance.) */ + pUrbReaped = pProxyDev->pOps->pfnUrbReap(pProxyDev, 5000 /* ms */); + if (!pUrbReaped) + { + Log(("GetStdDescSync: pfnUrbReap returned NULL, cancel and re-reap\n")); + rc = pProxyDev->pOps->pfnUrbCancel(pProxyDev, &Urb); + AssertRC(rc); + /** @todo This breaks the comment above... */ + pUrbReaped = pProxyDev->pOps->pfnUrbReap(pProxyDev, RT_INDEFINITE_WAIT); + } + if (pUrbReaped != &Urb) + { + Log(("GetStdDescSync: pfnUrbReap failed, pUrbReaped=%p\n", pUrbReaped)); + goto err; + } + + if (Urb.enmStatus != VUSBSTATUS_OK) + { + Log(("GetStdDescSync: Urb.enmStatus=%d\n", Urb.enmStatus)); + goto err; + } + + /* + * Check the length, config descriptors have total_length field + */ + if (iDescType == VUSB_DT_CONFIG) + { + if (Urb.cbData < sizeof(VUSBSETUP) + 4) + { + Log(("GetStdDescSync: Urb.cbData=%#x (min 4)\n", Urb.cbData)); + goto err; + } + cbDesc = RT_LE2H_U16(((uint16_t *)pbDesc)[1]); + } + else + { + if (Urb.cbData < sizeof(VUSBSETUP) + 1) + { + Log(("GetStdDescSync: Urb.cbData=%#x (min 1)\n", Urb.cbData)); + goto err; + } + cbDesc = ((uint8_t *)pbDesc)[0]; + } + + Log(("GetStdDescSync: got Urb.cbData=%u, cbDesc=%u cbHint=%u\n", Urb.cbData, cbDesc, cbHint)); + + if ( Urb.cbData == cbHint + sizeof(VUSBSETUP) + && cbDesc > Urb.cbData - sizeof(VUSBSETUP)) + { + cbHint = cbDesc; + Log(("GetStdDescSync: Part descriptor, Urb.cbData=%u, cbDesc=%u cbHint=%u\n", Urb.cbData, cbDesc, cbHint)); + + if (cbHint > sizeof(Urb.abData)) + { + Log(("GetStdDescSync: cbHint=%u, Urb.abData=%u, retrying immediately\n", cbHint, sizeof(Urb.abData))); + /* Not an error, go again without incrementing retry count or delaying. */ + continue; + } + + goto err; + } + + if (cbDesc > Urb.cbData - sizeof(VUSBSETUP)) + { + Log(("GetStdDescSync: Descriptor length too short, cbDesc=%u, Urb.cbData=%u\n", cbDesc, Urb.cbData)); + goto err; + } + + if ( cbInitialHint != cbHint + && ( cbDesc != cbHint + || Urb.cbData < cbInitialHint) ) + { + Log(("GetStdDescSync: Descriptor length incorrect, cbDesc=%u, Urb.cbData=%u, cbHint=%u\n", cbDesc, Urb.cbData, cbHint)); + goto err; + } + +#ifdef LOG_ENABLED + vusbUrbTrace(&Urb, "GetStdDescSync", true); +#endif + + /* + * Fine, we got everything return a heap duplicate of the descriptor. + */ + return RTMemDup(pbDesc, cbDesc); + +err: + cRetries++; + if (cRetries < GET_DESC_RETRIES) + { + Log(("GetStdDescSync: Retrying %u/%u\n", cRetries, GET_DESC_RETRIES)); + RTThreadSleep(100); + continue; + } + else + { + Log(("GetStdDescSync: Retries exceeded %u/%u. Giving up.\n", cRetries, GET_DESC_RETRIES)); + break; + } + } + + return NULL; +} + +/** + * Frees a descriptor returned by GetStdDescSync(). + */ +static void free_desc(void *pvDesc) +{ + RTMemFree(pvDesc); +} + +/** + * Get and a device descriptor and byteswap it appropriately. + */ +static bool usbProxyGetDeviceDesc(PUSBPROXYDEV pProxyDev, PVUSBDESCDEVICE pOut) +{ + /* + * Get the descriptor from the device. + */ + PVUSBDESCDEVICE pIn = (PVUSBDESCDEVICE)GetStdDescSync(pProxyDev, VUSB_DT_DEVICE, 0, 0, VUSB_DT_DEVICE_MIN_LEN); + if (!pIn) + { + Log(("usbProxyGetDeviceDesc: pProxyDev=%s: GetStdDescSync failed\n", pProxyDev->pUsbIns->pszName)); + return false; + } + if (pIn->bLength < VUSB_DT_DEVICE_MIN_LEN) + { + Log(("usb-proxy: pProxyDev=%s: Corrupted device descriptor. bLength=%d\n", pProxyDev->pUsbIns->pszName, pIn->bLength)); + return false; + } + + /* + * Convert it. + */ + pOut->bLength = VUSB_DT_DEVICE_MIN_LEN; + pOut->bDescriptorType = VUSB_DT_DEVICE; + pOut->bcdUSB = RT_LE2H_U16(pIn->bcdUSB); + pOut->bDeviceClass = pIn->bDeviceClass; + pOut->bDeviceSubClass = pIn->bDeviceSubClass; + pOut->bDeviceProtocol = pIn->bDeviceProtocol; + pOut->bMaxPacketSize0 = pIn->bMaxPacketSize0; + pOut->idVendor = RT_LE2H_U16(pIn->idVendor); + pOut->idProduct = RT_LE2H_U16(pIn->idProduct); + pOut->bcdDevice = RT_LE2H_U16(pIn->bcdDevice); + pOut->iManufacturer = pIn->iManufacturer; + pOut->iProduct = pIn->iProduct; + pOut->iSerialNumber = pIn->iSerialNumber; + pOut->bNumConfigurations = pIn->bNumConfigurations; + + free_desc(pIn); + return true; +} + +/** + * Count the numbers and types of each kind of descriptor that we need to + * copy out of the config descriptor + */ +struct desc_counts +{ + size_t num_ed, num_id, num_if; + /** bitmap (128 bits) */ + uint32_t idmap[4]; +}; + +static int count_descriptors(struct desc_counts *cnt, uint8_t *buf, size_t len) +{ + PVUSBDESCCONFIG cfg; + uint8_t *tmp, *end; + uint32_t i, x; + + memset(cnt, 0, sizeof(*cnt)); + + end = buf + len; + + cfg = (PVUSBDESCCONFIG)buf; + if ( cfg->bLength < VUSB_DT_CONFIG_MIN_LEN ) + return 0; + if ( cfg->bLength > len ) + return 0; + + for (tmp = buf + cfg->bLength; ((tmp + 1) < end) && *tmp; tmp += *tmp) + { + uint8_t type; + uint32_t ifnum; + PVUSBDESCINTERFACE id; + PVUSBDESCENDPOINT ed; + + type = *(tmp + 1); + + switch ( type ) { + case VUSB_DT_INTERFACE: + id = (PVUSBDESCINTERFACE)tmp; + if ( id->bLength < VUSB_DT_INTERFACE_MIN_LEN ) + return 0; + cnt->num_id++; + ifnum = id->bInterfaceNumber; + cnt->idmap[ifnum >> 6] |= (1 << (ifnum & 0x1f)); + break; + case VUSB_DT_ENDPOINT: + ed = (PVUSBDESCENDPOINT)tmp; + if ( ed->bLength < VUSB_DT_ENDPOINT_MIN_LEN ) + return 0; + cnt->num_ed++; + break; + default: + break; + } + } + + /* count interfaces */ + for(i=0; i < RT_ELEMENTS(cnt->idmap); i++) + for(x=1; x; x<<=1) + if ( cnt->idmap[i] & x ) + cnt->num_if++; + + return 1; +} + +/* Given the pointer to a configuration/interface/endpoint descriptor, find any following + * non-standard (vendor or class) descriptors. + */ +static const void *collect_stray_bits(uint8_t *this_desc, uint8_t *end, uint16_t *cbExtra) +{ + uint8_t *tmp, *buf; + uint8_t type; + + Assert(*(this_desc + 1) == VUSB_DT_INTERFACE || *(this_desc + 1) == VUSB_DT_ENDPOINT || *(this_desc + 1) == VUSB_DT_CONFIG); + buf = this_desc; + + /* Skip the current configuration/interface/endpoint descriptor. */ + buf += *(uint8_t *)buf; + + /* Loop until we find another descriptor we understand. */ + for (tmp = buf; ((tmp + 1) < end) && *tmp; tmp += *tmp) + { + type = *(tmp + 1); + if (type == VUSB_DT_INTERFACE || type == VUSB_DT_ENDPOINT) + break; + } + *cbExtra = tmp - buf; + if (*cbExtra) + return buf; + else + return NULL; +} + +/* Setup a vusb_interface structure given some preallocated structures + * to use, (we counted them already) + */ +static int copy_interface(PVUSBINTERFACE pIf, uint8_t ifnum, + PVUSBDESCINTERFACEEX *id, PVUSBDESCENDPOINTEX *ed, + uint8_t *buf, size_t len) +{ + PVUSBDESCINTERFACEEX cur_if = NULL; + uint32_t altmap[4] = {0,}; + uint8_t *tmp, *end = buf + len; + uint8_t alt; + int state; + size_t num_ep = 0; + + buf += *(uint8_t *)buf; + + pIf->cSettings = 0; + pIf->paSettings = NULL; + + for (tmp = buf, state = 0; ((tmp + 1) < end) && *tmp; tmp += *tmp) + { + uint8_t type; + PVUSBDESCINTERFACE ifd; + PVUSBDESCENDPOINT epd; + PVUSBDESCENDPOINTEX cur_ep; + + type = tmp[1]; + + switch ( type ) { + case VUSB_DT_INTERFACE: + state = 0; + ifd = (PVUSBDESCINTERFACE)tmp; + + /* Ignoring this interface */ + if ( ifd->bInterfaceNumber != ifnum ) + break; + + /* Check we didn't see this alternate setting already + * because that will break stuff + */ + alt = ifd->bAlternateSetting; + if ( altmap[alt >> 6] & (1 << (alt & 0x1f)) ) + return 0; + altmap[alt >> 6] |= (1 << (alt & 0x1f)); + + cur_if = *id; + (*id)++; + if ( pIf->cSettings == 0 ) + pIf->paSettings = cur_if; + + memcpy(cur_if, ifd, sizeof(cur_if->Core)); + + /* Point to additional interface descriptor bytes, if any. */ + AssertCompile(sizeof(cur_if->Core) == VUSB_DT_INTERFACE_MIN_LEN); + if (cur_if->Core.bLength - VUSB_DT_INTERFACE_MIN_LEN > 0) + cur_if->pvMore = tmp + VUSB_DT_INTERFACE_MIN_LEN; + else + cur_if->pvMore = NULL; + + cur_if->pvClass = collect_stray_bits(tmp, end, &cur_if->cbClass); + + pIf->cSettings++; + + state = 1; + num_ep = 0; + break; + case VUSB_DT_ENDPOINT: + if ( state == 0 ) + break; + + epd = (PVUSBDESCENDPOINT)tmp; + + cur_ep = *ed; + (*ed)++; + + if ( num_ep == 0 ) + cur_if->paEndpoints = cur_ep; + + if ( num_ep > cur_if->Core.bNumEndpoints ) + return 0; + + memcpy(cur_ep, epd, sizeof(cur_ep->Core)); + + /* Point to additional endpoint descriptor bytes, if any. */ + AssertCompile(sizeof(cur_ep->Core) == VUSB_DT_ENDPOINT_MIN_LEN); + if (cur_ep->Core.bLength - VUSB_DT_ENDPOINT_MIN_LEN > 0) + cur_ep->pvMore = tmp + VUSB_DT_ENDPOINT_MIN_LEN; + else + cur_ep->pvMore = NULL; + + cur_ep->pvClass = collect_stray_bits(tmp, end, &cur_ep->cbClass); + + cur_ep->Core.wMaxPacketSize = RT_LE2H_U16(cur_ep->Core.wMaxPacketSize); + + num_ep++; + break; + default: + /* Skip unknown descriptors. */ + break; + } + } + + return 1; +} + +/** + * Copy all of a devices config descriptors, this is needed so that the USB + * core layer knows all about how to map the different functions on to the + * virtual USB bus. + */ +static bool copy_config(PUSBPROXYDEV pProxyDev, uint8_t idx, PVUSBDESCCONFIGEX out) +{ + PVUSBDESCCONFIG cfg; + PVUSBINTERFACE pIf; + PVUSBDESCINTERFACEEX ifd; + PVUSBDESCENDPOINTEX epd; + struct desc_counts cnt; + void *descs; + size_t tot_len; + size_t cbIface; + uint32_t i, x; + uint8_t *tmp, *end; + + descs = GetStdDescSync(pProxyDev, VUSB_DT_CONFIG, idx, 0, VUSB_DT_CONFIG_MIN_LEN); + if ( descs == NULL ) { + Log(("copy_config: GetStdDescSync failed\n")); + return false; + } + + cfg = (PVUSBDESCCONFIG)descs; + tot_len = RT_LE2H_U16(cfg->wTotalLength); + + if ( !count_descriptors(&cnt, (uint8_t *)descs, tot_len) ) { + Log(("copy_config: count_descriptors failed\n")); + goto err; + } + + if ( cfg->bNumInterfaces != cnt.num_if ) + Log(("usb-proxy: config%u: bNumInterfaces %u != %u\n", + idx, cfg->bNumInterfaces, cnt.num_if)); + + Log(("usb-proxy: config%u: %u bytes id=%u ed=%u if=%u\n", + idx, tot_len, cnt.num_id, cnt.num_ed, cnt.num_if)); + + cbIface = cnt.num_if * sizeof(VUSBINTERFACE) + + cnt.num_id * sizeof(VUSBDESCINTERFACEEX) + + cnt.num_ed * sizeof(VUSBDESCENDPOINTEX); + out->paIfs = (PCVUSBINTERFACE)RTMemAllocZ(cbIface); + if ( out->paIfs == NULL ) { + free_desc(descs); + return false; + } + + /* Stash a pointer to the raw config descriptor; we may need bits of it later. */ + out->pvOriginal = descs; + + pIf = (PVUSBINTERFACE)out->paIfs; + ifd = (PVUSBDESCINTERFACEEX)&pIf[cnt.num_if]; + epd = (PVUSBDESCENDPOINTEX)&ifd[cnt.num_id]; + + out->Core.bLength = cfg->bLength; + out->Core.bDescriptorType = cfg->bDescriptorType; + out->Core.wTotalLength = 0; /* Auto Calculated */ + out->Core.bNumInterfaces = (uint8_t)cnt.num_if; + out->Core.bConfigurationValue = cfg->bConfigurationValue; + out->Core.iConfiguration = cfg->iConfiguration; + out->Core.bmAttributes = cfg->bmAttributes; + out->Core.MaxPower = cfg->MaxPower; + + tmp = (uint8_t *)out->pvOriginal; + end = tmp + tot_len; + + /* Point to additional configuration descriptor bytes, if any. */ + AssertCompile(sizeof(out->Core) == VUSB_DT_CONFIG_MIN_LEN); + if (out->Core.bLength - VUSB_DT_CONFIG_MIN_LEN > 0) + out->pvMore = tmp + VUSB_DT_CONFIG_MIN_LEN; + else + out->pvMore = NULL; + + /* Typically there might be an interface association descriptor here. */ + out->pvClass = collect_stray_bits(tmp, end, &out->cbClass); + + for(i=0; i < 4; i++) + for(x=0; x < 32; x++) + if ( cnt.idmap[i] & (1 << x) ) + if ( !copy_interface(pIf++, (i << 6) | x, &ifd, &epd, (uint8_t *)out->pvOriginal, tot_len) ) { + Log(("copy_interface(%d,,) failed\n", pIf - 1)); + goto err; + } + + return true; +err: + Log(("usb-proxy: config%u: Corrupted configuration descriptor\n", idx)); + free_desc(descs); + return false; +} + + +/** + * Edit out masked interface descriptors. + * + * @param pProxyDev The proxy device + */ +static void usbProxyDevEditOutMaskedIfs(PUSBPROXYDEV pProxyDev) +{ + unsigned cRemoved = 0; + + PVUSBDESCCONFIGEX paCfgs = pProxyDev->paCfgDescs; + for (unsigned iCfg = 0; iCfg < pProxyDev->DevDesc.bNumConfigurations; iCfg++) + { + PVUSBINTERFACE paIfs = (PVUSBINTERFACE)paCfgs[iCfg].paIfs; + for (unsigned iIf = 0; iIf < paCfgs[iCfg].Core.bNumInterfaces; iIf++) + for (uint32_t iAlt = 0; iAlt < paIfs[iIf].cSettings; iAlt++) + if ( paIfs[iIf].paSettings[iAlt].Core.bInterfaceNumber < 32 + && ((1 << paIfs[iIf].paSettings[iAlt].Core.bInterfaceNumber) & pProxyDev->fMaskedIfs)) + { + Log(("usb-proxy: removing interface #%d (iIf=%d iAlt=%d) on config #%d (iCfg=%d)\n", + paIfs[iIf].paSettings[iAlt].Core.bInterfaceNumber, iIf, iAlt, paCfgs[iCfg].Core.bConfigurationValue, iCfg)); + cRemoved++; + + paCfgs[iCfg].Core.bNumInterfaces--; + unsigned cToCopy = paCfgs[iCfg].Core.bNumInterfaces - iIf; + if (cToCopy) + memmove(&paIfs[iIf], &paIfs[iIf + 1], sizeof(paIfs[0]) * cToCopy); + memset(&paIfs[iIf + cToCopy], '\0', sizeof(paIfs[0])); + break; + } + } + + Log(("usb-proxy: edited out %d interface(s).\n", cRemoved)); +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUsbReset} + * + * USB Device Proxy: Call OS specific code to reset the device. + */ +static DECLCALLBACK(int) usbProxyDevReset(PPDMUSBINS pUsbIns, bool fResetOnLinux) +{ + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + + if (pProxyDev->fMaskedIfs) + { + Log(("usbProxyDevReset: pProxyDev=%s - ignoring reset request fMaskedIfs=%#x\n", pUsbIns->pszName, pProxyDev->fMaskedIfs)); + return VINF_SUCCESS; + } + LogFlow(("usbProxyDevReset: pProxyDev=%s\n", pUsbIns->pszName)); + return pProxyDev->pOps->pfnReset(pProxyDev, fResetOnLinux); +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUsbGetDescriptorCache} + */ +static DECLCALLBACK(PCPDMUSBDESCCACHE) usbProxyDevGetDescriptorCache(PPDMUSBINS pUsbIns) +{ + PUSBPROXYDEV pThis = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + return &pThis->DescCache; +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUsbSetConfiguration} + * + * USB Device Proxy: Release claimed interfaces, tell the OS+device about the config change, claim the new interfaces. + */ +static DECLCALLBACK(int) usbProxyDevSetConfiguration(PPDMUSBINS pUsbIns, uint8_t bConfigurationValue, + const void *pvOldCfgDesc, const void *pvOldIfState, const void *pvNewCfgDesc) +{ + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + LogFlow(("usbProxyDevSetConfiguration: pProxyDev=%s iActiveCfg=%d bConfigurationValue=%d\n", + pUsbIns->pszName, pProxyDev->iActiveCfg, bConfigurationValue)); + + /* + * Release the current config. + */ + if (pvOldCfgDesc) + { + PCVUSBDESCCONFIGEX pOldCfgDesc = (PCVUSBDESCCONFIGEX)pvOldCfgDesc; + PCVUSBINTERFACESTATE pOldIfState = (PCVUSBINTERFACESTATE)pvOldIfState; + for (unsigned i = 0; i < pOldCfgDesc->Core.bNumInterfaces; i++) + if (pOldIfState[i].pCurIfDesc) + pProxyDev->pOps->pfnReleaseInterface(pProxyDev, pOldIfState[i].pCurIfDesc->Core.bInterfaceNumber); + } + + /* + * Do the actual SET_CONFIGURE. + * The mess here is because most backends will already have selected a + * configuration and there are a bunch of devices which will freak out + * if we do SET_CONFIGURE twice with the same value. (PalmOne, TrekStor USB-StickGO, ..) + * + * After open and reset the backend should use the members iActiveCfg and cIgnoreSetConfigs + * to indicate the new configuration state and what to do on the next SET_CONFIGURATION call. + */ + if ( pProxyDev->iActiveCfg != bConfigurationValue + || ( bConfigurationValue == 0 + && pProxyDev->iActiveCfg != -1 /* this test doesn't make sense, we know it's 0 */ + && pProxyDev->cIgnoreSetConfigs >= 2) + || !pProxyDev->cIgnoreSetConfigs) + { + pProxyDev->cIgnoreSetConfigs = 0; + int rc = pProxyDev->pOps->pfnSetConfig(pProxyDev, bConfigurationValue); + if (RT_FAILURE(rc)) + { + pProxyDev->iActiveCfg = -1; + return rc; + } + pProxyDev->iActiveCfg = bConfigurationValue; + } + else if (pProxyDev->cIgnoreSetConfigs > 0) + pProxyDev->cIgnoreSetConfigs--; + + /* + * Claim the interfaces. + */ + PCVUSBDESCCONFIGEX pNewCfgDesc = (PCVUSBDESCCONFIGEX)pvNewCfgDesc; + Assert(pNewCfgDesc->Core.bConfigurationValue == bConfigurationValue); + for (unsigned iIf = 0; iIf < pNewCfgDesc->Core.bNumInterfaces; iIf++) + { + PCVUSBINTERFACE pIf = &pNewCfgDesc->paIfs[iIf]; + for (uint32_t iAlt = 0; iAlt < pIf->cSettings; iAlt++) + { + if (pIf->paSettings[iAlt].Core.bAlternateSetting != 0) + continue; + pProxyDev->pOps->pfnClaimInterface(pProxyDev, pIf->paSettings[iAlt].Core.bInterfaceNumber); + /* ignore failures - the backend deals with that and does the necessary logging. */ + break; + } + } + + return VINF_SUCCESS; +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUsbSetInterface} + * + * USB Device Proxy: Call OS specific code to select alternate interface settings. + */ +static DECLCALLBACK(int) usbProxyDevSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting) +{ + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + LogFlow(("usbProxyDevSetInterface: pProxyDev=%s bInterfaceNumber=%d bAlternateSetting=%d\n", + pUsbIns->pszName, bInterfaceNumber, bAlternateSetting)); + + return pProxyDev->pOps->pfnSetInterface(pProxyDev, bInterfaceNumber, bAlternateSetting); +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUsbClearHaltedEndpoint} + * + * USB Device Proxy: Call OS specific code to clear the endpoint. + */ +static DECLCALLBACK(int) usbProxyDevClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint) +{ + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + LogFlow(("usbProxyDevClearHaltedEndpoint: pProxyDev=%s uEndpoint=%u\n", + pUsbIns->pszName, uEndpoint)); + + return pProxyDev->pOps->pfnClearHaltedEndpoint(pProxyDev, uEndpoint); +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUrbQueue} + * + * USB Device Proxy: Call OS specific code. + */ +static DECLCALLBACK(int) usbProxyDevUrbQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb) +{ + int rc = VINF_SUCCESS; + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + rc = pProxyDev->pOps->pfnUrbQueue(pProxyDev, pUrb); + if (RT_FAILURE(rc)) + return pProxyDev->fDetached + ? VERR_VUSB_DEVICE_NOT_ATTACHED + : VERR_VUSB_FAILED_TO_QUEUE_URB; + return rc; +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUrbCancel} + * + * USB Device Proxy: Call OS specific code. + */ +static DECLCALLBACK(int) usbProxyDevUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb) +{ + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + return pProxyDev->pOps->pfnUrbCancel(pProxyDev, pUrb); +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnUrbReap} + * + * USB Device Proxy: Call OS specific code. + */ +static DECLCALLBACK(PVUSBURB) usbProxyDevUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies) +{ + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + PVUSBURB pUrb = pProxyDev->pOps->pfnUrbReap(pProxyDev, cMillies); + if ( pUrb + && pUrb->enmState == VUSBURBSTATE_CANCELLED + && pUrb->enmStatus == VUSBSTATUS_OK) + pUrb->enmStatus = VUSBSTATUS_DNR; + return pUrb; +} + + +/** + * @interface_method_impl{PDMUSBREG,pfnWakeup} + * + * USB Device Proxy: Call OS specific code. + */ +static DECLCALLBACK(int) usbProxyDevWakeup(PPDMUSBINS pUsbIns) +{ + PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + + return pProxyDev->pOps->pfnWakeup(pProxyDev); +} + + +/** @interface_method_impl{PDMUSBREG,pfnDestruct} */ +static DECLCALLBACK(void) usbProxyDestruct(PPDMUSBINS pUsbIns) +{ + PDMUSB_CHECK_VERSIONS_RETURN_VOID(pUsbIns); + PUSBPROXYDEV pThis = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + Log(("usbProxyDestruct: destroying pProxyDev=%s\n", pUsbIns->pszName)); + + /* close it. */ + if (pThis->fOpened) + { + pThis->pOps->pfnClose(pThis); + pThis->fOpened = false; + } + + /* free the config descriptors. */ + if (pThis->paCfgDescs) + { + for (unsigned i = 0; i < pThis->DevDesc.bNumConfigurations; i++) + { + RTMemFree((void *)pThis->paCfgDescs[i].paIfs); + RTMemFree((void *)pThis->paCfgDescs[i].pvOriginal); + } + RTMemFree(pThis->paCfgDescs); + pThis->paCfgDescs = NULL; + } + + /* free dev */ + if (&g_szDummyName[0] != pUsbIns->pszName) + RTStrFree(pUsbIns->pszName); + pUsbIns->pszName = NULL; + + if (pThis->pvInstanceDataR3) + RTMemFree(pThis->pvInstanceDataR3); +} + + +/** + * Helper function used by usbProxyConstruct when + * reading a filter from CFG. + * + * @returns VBox status code. + * @param pFilter The filter. + * @param enmFieldIdx The filter field indext. + * @param pHlp The USB helper callback table. + * @param pNode The CFGM node. + * @param pszExact The exact value name. + * @param pszExpr The expression value name. + */ +static int usbProxyQueryNum(PUSBFILTER pFilter, USBFILTERIDX enmFieldIdx, + PCPDMUSBHLP pHlp, PCFGMNODE pNode, + const char *pszExact, const char *pszExpr) +{ + char szTmp[256]; + + /* try exact first */ + uint16_t u16; + int rc = pHlp->pfnCFGMQueryU16(pNode, pszExact, &u16); + if (RT_SUCCESS(rc)) + { + rc = USBFilterSetNumExact(pFilter, enmFieldIdx, u16, true); + AssertRCReturn(rc, rc); + + /* make sure only the exact attribute is present. */ + rc = pHlp->pfnCFGMQueryString(pNode, pszExpr, szTmp, sizeof(szTmp)); + if (RT_UNLIKELY(rc != VERR_CFGM_VALUE_NOT_FOUND)) + { + szTmp[0] = '\0'; + pHlp->pfnCFGMGetName(pNode, szTmp, sizeof(szTmp)); + LogRel(("usbProxyConstruct: %s: Both %s and %s are present!\n", szTmp, pszExact, pszExpr)); + return VERR_INVALID_PARAMETER; + } + return VINF_SUCCESS; + } + if (RT_UNLIKELY(rc != VERR_CFGM_VALUE_NOT_FOUND)) + { + szTmp[0] = '\0'; + pHlp->pfnCFGMGetName(pNode, szTmp, sizeof(szTmp)); + LogRel(("usbProxyConstruct: %s: %s query failed, rc=%Rrc\n", szTmp, pszExact, rc)); + return rc; + } + + /* expression? */ + rc = pHlp->pfnCFGMQueryString(pNode, pszExpr, szTmp, sizeof(szTmp)); + if (RT_SUCCESS(rc)) + { + rc = USBFilterSetNumExpression(pFilter, enmFieldIdx, szTmp, true); + AssertRCReturn(rc, rc); + return VINF_SUCCESS; + } + if (RT_UNLIKELY(rc != VERR_CFGM_VALUE_NOT_FOUND)) + { + szTmp[0] = '\0'; + pHlp->pfnCFGMGetName(pNode, szTmp, sizeof(szTmp)); + LogRel(("usbProxyConstruct: %s: %s query failed, rc=%Rrc\n", szTmp, pszExpr, rc)); + return rc; + } + + return VINF_SUCCESS; +} + + +/** @interface_method_impl{PDMUSBREG,pfnConstruct} */ +static DECLCALLBACK(int) usbProxyConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal) +{ + PDMUSB_CHECK_VERSIONS_RETURN(pUsbIns); + RT_NOREF(iInstance); + PUSBPROXYDEV pThis = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV); + PCPDMUSBHLP pHlp = pUsbIns->pHlpR3; + + LogFlow(("usbProxyConstruct: pUsbIns=%p iInstance=%d\n", pUsbIns, iInstance)); + + /* + * Initialize the instance data. + */ + pThis->pUsbIns = pUsbIns; + pThis->pUsbIns->pszName = g_szDummyName; + pThis->iActiveCfg = -1; + pThis->fMaskedIfs = 0; + pThis->fOpened = false; + pThis->fInited = false; + + /* + * Read the basic configuration. + */ + char szAddress[1024]; + int rc = pHlp->pfnCFGMQueryString(pCfg, "Address", szAddress, sizeof(szAddress)); + AssertRCReturn(rc, rc); + + char szBackend[64]; + rc = pHlp->pfnCFGMQueryString(pCfg, "Backend", szBackend, sizeof(szBackend)); + AssertRCReturn(rc, rc); + + /* + * Select backend and open the device. + */ + rc = VERR_NOT_FOUND; + for (unsigned i = 0; i < RT_ELEMENTS(g_aUsbProxies); i++) + { + if (!RTStrICmp(szBackend, g_aUsbProxies[i]->pszName)) + { + pThis->pOps = g_aUsbProxies[i]; + rc = VINF_SUCCESS; + break; + } + } + if (RT_FAILURE(rc)) + return PDMUSB_SET_ERROR(pUsbIns, rc, N_("USBProxy: Failed to find backend")); + + pThis->pvInstanceDataR3 = RTMemAllocZ(pThis->pOps->cbBackend); + if (!pThis->pvInstanceDataR3) + return PDMUSB_SET_ERROR(pUsbIns, VERR_NO_MEMORY, N_("USBProxy: can't allocate memory for host backend")); + + rc = pThis->pOps->pfnOpen(pThis, szAddress); + if (RT_FAILURE(rc)) + { + LogRel(("usbProxyConstruct: Failed to open '%s', rc=%Rrc\n", szAddress, rc)); + return rc; + } + pThis->fOpened = true; + + /* + * Get the device descriptor and format the device name (for logging). + */ + if (!usbProxyGetDeviceDesc(pThis, &pThis->DevDesc)) + { + Log(("usbProxyConstruct: usbProxyGetDeviceDesc failed\n")); + return VERR_READ_ERROR; + } + + RTStrAPrintf(&pUsbIns->pszName, "%p[proxy %04x:%04x]", pThis, pThis->DevDesc.idVendor, pThis->DevDesc.idProduct); /** @todo append the user comment */ + AssertReturn(pUsbIns->pszName, VERR_NO_MEMORY); + + /* + * Get config descriptors. + */ + size_t cbConfigs = pThis->DevDesc.bNumConfigurations * sizeof(pThis->paCfgDescs[0]); + pThis->paCfgDescs = (PVUSBDESCCONFIGEX)RTMemAllocZ(cbConfigs); + AssertReturn(pThis->paCfgDescs, VERR_NO_MEMORY); + + unsigned i; + for (i = 0; i < pThis->DevDesc.bNumConfigurations; i++) + if (!copy_config(pThis, i, (PVUSBDESCCONFIGEX)&pThis->paCfgDescs[i])) + break; + if (i < pThis->DevDesc.bNumConfigurations) + { + Log(("usbProxyConstruct: copy_config failed, i=%d\n", i)); + return VERR_READ_ERROR; + } + + /* + * Pickup best matching global configuration for this device. + * The global configuration is organized like this: + * + * GlobalConfig/Whatever/ + * |- idVendor = 300 + * |- idProduct = 300 + * - Config/ + * + * The first level contains filter attributes which we stuff into a USBFILTER + * structure and match against the device info that's available. The highest + * ranked match is will be used. If nothing is found, the values will be + * queried from the GlobalConfig node (simplifies code and might actually + * be useful). + */ + PCFGMNODE pCfgGlobalDev = pCfgGlobal; + PCFGMNODE pCur = pHlp->pfnCFGMGetFirstChild(pCfgGlobal); + if (pCur) + { + /* + * Create a device filter from the device configuration + * descriptor ++. No strings currently. + */ + USBFILTER Device; + USBFilterInit(&Device, USBFILTERTYPE_CAPTURE); + rc = USBFilterSetNumExact(&Device, USBFILTERIDX_VENDOR_ID, pThis->DevDesc.idVendor, true); AssertRC(rc); + rc = USBFilterSetNumExact(&Device, USBFILTERIDX_PRODUCT_ID, pThis->DevDesc.idProduct, true); AssertRC(rc); + rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_REV, pThis->DevDesc.bcdDevice, true); AssertRC(rc); + rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_CLASS, pThis->DevDesc.bDeviceClass, true); AssertRC(rc); + rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_SUB_CLASS, pThis->DevDesc.bDeviceSubClass, true); AssertRC(rc); + rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_PROTOCOL, pThis->DevDesc.bDeviceProtocol, true); AssertRC(rc); + /** @todo manufacturer, product and serial strings */ + + int iBestMatchRate = -1; + PCFGMNODE pBestMatch = NULL; + for (pCur = pHlp->pfnCFGMGetFirstChild(pCfgGlobal); pCur; pCur = pHlp->pfnCFGMGetNextChild(pCur)) + { + /* + * Construct a filter from the attributes in the node. + */ + USBFILTER Filter; + USBFilterInit(&Filter, USBFILTERTYPE_CAPTURE); + + /* numeric */ + if ( RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_VENDOR_ID, pHlp, pCur, "idVendor", "idVendorExpr")) + || RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_PRODUCT_ID, pHlp, pCur, "idProduct", "idProcutExpr")) + || RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_REV, pHlp, pCur, "bcdDevice", "bcdDeviceExpr")) + || RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_CLASS, pHlp, pCur, "bDeviceClass", "bDeviceClassExpr")) + || RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_SUB_CLASS, pHlp, pCur, "bDeviceSubClass", "bDeviceSubClassExpr")) + || RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_PROTOCOL, pHlp, pCur, "bDeviceProtocol", "bDeviceProtocolExpr"))) + continue; /* skip it */ + + /* strings */ + /** @todo manufacturer, product and serial strings */ + + /* ignore unknown config values, but not without bitching. */ + if (!pHlp->pfnCFGMAreValuesValid(pCur, + "idVendor\0idVendorExpr\0" + "idProduct\0idProductExpr\0" + "bcdDevice\0bcdDeviceExpr\0" + "bDeviceClass\0bDeviceClassExpr\0" + "bDeviceSubClass\0bDeviceSubClassExpr\0" + "bDeviceProtocol\0bDeviceProtocolExpr\0")) + LogRel(("usbProxyConstruct: Unknown value(s) in config filter (ignored)!\n")); + + /* + * Try match it and on match see if it has is a higher rate hit + * than the previous match. Quit if its a 100% match. + */ + int iRate = USBFilterMatchRated(&Filter, &Device); + if (iRate > iBestMatchRate) + { + pBestMatch = pCur; + iBestMatchRate = iRate; + if (iRate >= 100) + break; + } + } + if (pBestMatch) + pCfgGlobalDev = pHlp->pfnCFGMGetChild(pBestMatch, "Config"); + if (pCfgGlobalDev) + pCfgGlobalDev = pCfgGlobal; + } + + /* + * Query the rest of the configuration using the global as fallback. + */ + rc = pHlp->pfnCFGMQueryU32(pCfg, "MaskedIfs", &pThis->fMaskedIfs); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + rc = pHlp->pfnCFGMQueryU32(pCfgGlobalDev, "MaskedIfs", &pThis->fMaskedIfs); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + pThis->fMaskedIfs = 0; + else + AssertRCReturn(rc, rc); + + bool fForce11Device; + rc = pHlp->pfnCFGMQueryBool(pCfg, "Force11Device", &fForce11Device); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "Force11Device", &fForce11Device); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + fForce11Device = false; + else + AssertRCReturn(rc, rc); + + bool fForce11PacketSize; + rc = pHlp->pfnCFGMQueryBool(pCfg, "Force11PacketSize", &fForce11PacketSize); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "Force11PacketSize", &fForce11PacketSize); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + fForce11PacketSize = false; + else + AssertRCReturn(rc, rc); + + bool fEditAudioSyncEp; + rc = pHlp->pfnCFGMQueryBool(pCfg, "EditAudioSyncEp", &fEditAudioSyncEp); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "EditAudioSyncEp", &fEditAudioSyncEp); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + fEditAudioSyncEp = true; /* NB: On by default! */ + else + AssertRCReturn(rc, rc); + + bool fEditRemoteWake; + rc = pHlp->pfnCFGMQueryBool(pCfg, "EditRemoteWake", &fEditRemoteWake); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "EditRemoteWake", &fEditRemoteWake); + if (rc == VERR_CFGM_VALUE_NOT_FOUND) + fEditRemoteWake = true; /* NB: On by default! */ + else + AssertRCReturn(rc, rc); + + /* + * If we're masking interfaces, edit the descriptors. + */ + bool fEdited = pThis->fMaskedIfs != 0; + if (pThis->fMaskedIfs) + usbProxyDevEditOutMaskedIfs(pThis); + + /* + * Do 2.0 -> 1.1 device edits if requested to do so. + */ + if ( fForce11PacketSize + && pThis->DevDesc.bcdUSB >= 0x0200) + { + PVUSBDESCCONFIGEX paCfgs = pThis->paCfgDescs; + for (unsigned iCfg = 0; iCfg < pThis->DevDesc.bNumConfigurations; iCfg++) + { + PVUSBINTERFACE paIfs = (PVUSBINTERFACE)paCfgs[iCfg].paIfs; + for (unsigned iIf = 0; iIf < paCfgs[iCfg].Core.bNumInterfaces; iIf++) + for (uint32_t iAlt = 0; iAlt < paIfs[iIf].cSettings; iAlt++) + { + /* + * USB 1.1 defines the max for control, interrupt and bulk to be 64 bytes. + * While isochronous has a max of 1023 bytes. + */ + PVUSBDESCENDPOINTEX paEps = (PVUSBDESCENDPOINTEX)paIfs[iIf].paSettings[iAlt].paEndpoints; + if (!paEps) + continue; + + for (unsigned iEp = 0; iEp < paIfs[iIf].paSettings[iAlt].Core.bNumEndpoints; iEp++) + { + const uint16_t cbMax = (paEps[iEp].Core.bmAttributes & 3) == 1 /* isoc */ + ? 1023 + : 64; + if (paEps[iEp].Core.wMaxPacketSize > cbMax) + { + Log(("usb-proxy: pProxyDev=%s correcting wMaxPacketSize from %#x to %#x (mainly for vista)\n", + pUsbIns->pszName, paEps[iEp].Core.wMaxPacketSize, cbMax)); + paEps[iEp].Core.wMaxPacketSize = cbMax; + fEdited = true; + } + } + } + } + } + + if ( fForce11Device + && pThis->DevDesc.bcdUSB == 0x0200) + { + /* + * Discourages windows from helping you find a 2.0 port. + */ + Log(("usb-proxy: %s correcting USB version 2.0 to 1.1 (to avoid Windows warning)\n", pUsbIns->pszName)); + pThis->DevDesc.bcdUSB = 0x110; + fEdited = true; + } + + + /* + * Turn asynchronous audio endpoints into synchronous ones, see @bugref{8769} + */ + if (fEditAudioSyncEp) + { + PVUSBDESCCONFIGEX paCfgs = pThis->paCfgDescs; + for (unsigned iCfg = 0; iCfg < pThis->DevDesc.bNumConfigurations; iCfg++) + { + PVUSBINTERFACE paIfs = (PVUSBINTERFACE)paCfgs[iCfg].paIfs; + for (unsigned iIf = 0; iIf < paCfgs[iCfg].Core.bNumInterfaces; iIf++) + for (uint32_t iAlt = 0; iAlt < paIfs[iIf].cSettings; iAlt++) + { + /* If not an audio class interface, skip. */ + if (paIfs[iIf].paSettings[iAlt].Core.bInterfaceClass != 1) + continue; + + /* If not a streaming interface, skip. */ + if (paIfs[iIf].paSettings[iAlt].Core.bInterfaceSubClass != 2) + continue; + + PVUSBDESCENDPOINTEX paEps = (PVUSBDESCENDPOINTEX)paIfs[iIf].paSettings[iAlt].paEndpoints; + if (!paEps) + continue; + + for (unsigned iEp = 0; iEp < paIfs[iIf].paSettings[iAlt].Core.bNumEndpoints; iEp++) + { + /* isoch/asynch/data*/ + if ((paEps[iEp].Core.bmAttributes == 5) && (paEps[iEp].Core.bLength == 9)) + { + uint8_t *pbExtra = (uint8_t *)paEps[iEp].pvMore; /* unconst*/ + if (pbExtra[1] == 0) + continue; /* If bSynchAddress is zero, leave the descriptor alone. */ + + Log(("usb-proxy: pProxyDev=%s async audio with bmAttr=%02X [%02X, %02X] on EP %02X\n", + pUsbIns->pszName, paEps[iEp].Core.bmAttributes, pbExtra[0], pbExtra[1], paEps[iEp].Core.bEndpointAddress)); + paEps[iEp].Core.bmAttributes = 0xD; /* isoch/synch/data*/ + pbExtra[1] = 0; /* Clear bSynchAddress. */ + fEdited = true; + LogRel(("VUSB: Modified '%s' async audio endpoint 0x%02x\n", pUsbIns->pszName, paEps[iEp].Core.bEndpointAddress)); + } + } + } + } + } + + /* + * Disable remote wakeup capability, see @bugref{9839}. This is done on + * a device/configuration level, no need to dig too deep through the descriptors. + * On most backends, we can't perform a real selective suspend, and more importantly + * can't receive a remote wake notification. If a guest suspends the device and waits + * for a remote wake, the device is effectively dead. + */ + if (fEditRemoteWake) + { + PVUSBDESCCONFIGEX paCfgs = pThis->paCfgDescs; + for (unsigned iCfg = 0; iCfg < pThis->DevDesc.bNumConfigurations; iCfg++) + { + Log(("usb-proxy: pProxyDev=%s configuration %d with bmAttr=%02X\n", + pUsbIns->pszName, paCfgs[iCfg].Core.bmAttributes, iCfg)); + if (paCfgs[iCfg].Core.bmAttributes & RT_BIT(5)) + { + paCfgs[iCfg].Core.bmAttributes = paCfgs[iCfg].Core.bmAttributes & ~RT_BIT(5); /* Remote wakeup. */ + fEdited = true; + LogRel(("VUSB: Disabled '%s' remote wakeup for configuration %d\n", pUsbIns->pszName, iCfg)); + } + } + } + + /* + * Init the PDM/VUSB descriptor cache. + */ + pThis->DescCache.pDevice = &pThis->DevDesc; + pThis->DescCache.paConfigs = pThis->paCfgDescs; + pThis->DescCache.paLanguages = NULL; + pThis->DescCache.cLanguages = 0; + pThis->DescCache.fUseCachedDescriptors = fEdited; + pThis->DescCache.fUseCachedStringsDescriptors = false; + + /* + * Call the backend if it wishes to do some more initializing + * after we've read the config and descriptors. + */ + if (pThis->pOps->pfnInit) + { + rc = pThis->pOps->pfnInit(pThis); + if (RT_FAILURE(rc)) + return rc; + } + pThis->fInited = true; + + /* + * We're good! + */ + Log(("usb-proxy: created pProxyDev=%s address '%s' fMaskedIfs=%#x (rc=%Rrc)\n", + pUsbIns->pszName, szAddress, pThis->fMaskedIfs, rc)); + return VINF_SUCCESS; +} + + +/** + * The USB proxy device registration record. + */ +const PDMUSBREG g_UsbDevProxy = +{ + /* u32Version */ + PDM_USBREG_VERSION, + /* szName */ + "USBProxy", + /* pszDescription */ + "USB Proxy Device.", + /* fFlags */ + 0, + /* cMaxInstances */ + ~0U, + /* cbInstance */ + sizeof(USBPROXYDEV), + /* pfnConstruct */ + usbProxyConstruct, + /* pfnDestruct */ + usbProxyDestruct, + /* pfnVMInitComplete */ + NULL, + /* pfnVMPowerOn */ + NULL, + /* pfnVMReset */ + NULL, + /* pfnVMSuspend */ + NULL, + /* pfnVMResume */ + NULL, + /* pfnVMPowerOff */ + NULL, + /* pfnHotPlugged */ + NULL, + /* pfnHotUnplugged */ + NULL, + /* pfnDriverAttach */ + NULL, + /* pfnDriverDetach */ + NULL, + /* pfnQueryInterface */ + NULL, + /* pfnUsbReset */ + usbProxyDevReset, + /* pfnUsbGetDescriptorCache */ + usbProxyDevGetDescriptorCache, + /* pfnUsbSetConfiguration */ + usbProxyDevSetConfiguration, + /* pfnUsbSetInterface */ + usbProxyDevSetInterface, + /* pfnUsbClearHaltedEndpoint */ + usbProxyDevClearHaltedEndpoint, + /* pfnUrbNew */ + NULL, + /* pfnUrbQueue */ + usbProxyDevUrbQueue, + /* pfnUrbCancel */ + usbProxyDevUrbCancel, + /* pfnUrbReap */ + usbProxyDevUrbReap, + /* pfnWakeup */ + usbProxyDevWakeup, + + /* u32TheEnd */ + PDM_USBREG_VERSION +}; + |