USBProxyDevice-win.cpp@ 83298

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1	/* $Id: USBProxyDevice-win.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* USBPROXY - USB proxy, Win32 backend
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_USBPROXY
23	#include <iprt/win/windows.h>
24
25	#include <VBox/vmm/pdm.h>
26	#include <VBox/err.h>
27	#include <VBox/usb.h>
28	#include <VBox/log.h>
29	#include <iprt/assert.h>
30	#include <iprt/alloc.h>
31	#include <iprt/err.h>
32	#include <iprt/string.h>
33	#include <iprt/thread.h>
34	#include <iprt/asm.h>
35	#include "../USBProxyDevice.h"
36	#include <VBox/usblib.h>
37
38
39	/*********************************************************************************************************************************
40	* Structures and Typedefs *
41	*********************************************************************************************************************************/
42	typedef struct _QUEUED_URB
43	{
44	PVUSBURB urb;
45
46	USBSUP_URB urbwin;
47	OVERLAPPED overlapped;
48	DWORD cbReturned;
49	bool fCancelled;
50	} QUEUED_URB, *PQUEUED_URB;
51
52	typedef struct
53	{
54	/* Critical section to protect this structure. */
55	RTCRITSECT CritSect;
56	HANDLE hDev;
57	uint8_t bInterfaceNumber;
58	bool fClaimed;
59	/** The allocated size of paHandles and paQueuedUrbs. */
60	unsigned cAllocatedUrbs;
61	/** The number of URBs in the array. */
62	unsigned cQueuedUrbs;
63	/** Array of pointers to the in-flight URB structures. */
64	PQUEUED_URB *paQueuedUrbs;
65	/** Array of handles, this is parallel to paQueuedUrbs. */
66	PHANDLE paHandles;
67	/* Event sempahore to wakeup the reaper thead. */
68	HANDLE hEventWakeup;
69	/** Number of queued URBs waiting to get into the handle list. */
70	unsigned cPendingUrbs;
71	/** Array of pending URBs. */
72	PQUEUED_URB aPendingUrbs[64];
73	} PRIV_USBW32, *PPRIV_USBW32;
74
75	/* All functions are returning 1 on success, 0 on error */
76
77
78	/*********************************************************************************************************************************
79	* Internal Functions *
80	*********************************************************************************************************************************/
81	static int usbProxyWinSetInterface(PUSBPROXYDEV p, int iIf, int setting);
82
83	/**
84	* Converts the given Windows error code to VBox handling unplugged devices.
85	*
86	* @returns VBox status code.
87	* @param pProxDev The USB proxy device instance.
88	* @param dwErr Windows error code.
89	*/
90	static int usbProxyWinHandleUnpluggedDevice(PUSBPROXYDEV pProxyDev, DWORD dwErr)
91	{
92	#ifdef LOG_ENABLED
93	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
94	#endif
95
96	if ( dwErr == ERROR_INVALID_HANDLE_STATE
97	\|\| dwErr == ERROR_BAD_COMMAND)
98	{
99	Log(("usbproxy: device %x unplugged!!\n", pPriv->hDev));
100	pProxyDev->fDetached = true;
101	}
102	else
103	AssertMsgFailed(("lasterr=%d\n", dwErr));
104	return RTErrConvertFromWin32(dwErr);
105	}
106
107	/**
108	* Open a USB device and create a backend instance for it.
109	*
110	* @returns VBox status code.
111	*/
112	static DECLCALLBACK(int) usbProxyWinOpen(PUSBPROXYDEV pProxyDev, const char pszAddress, void pvBackend)
113	{
114	RT_NOREF(pvBackend);
115	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
116
117	int rc = VINF_SUCCESS;
118	pPriv->cAllocatedUrbs = 32;
119	pPriv->paHandles = (PHANDLE)RTMemAllocZ(sizeof(pPriv->paHandles[0]) * pPriv->cAllocatedUrbs);
120	pPriv->paQueuedUrbs = (PQUEUED_URB )RTMemAllocZ(sizeof(pPriv->paQueuedUrbs[0]) pPriv->cAllocatedUrbs);
121	if ( pPriv->paQueuedUrbs
122	&& pPriv->paHandles)
123	{
124	/*
125	* Open the device.
126	*/
127	pPriv->hDev = CreateFile(pszAddress,
128	GENERIC_READ \| GENERIC_WRITE,
129	FILE_SHARE_WRITE \| FILE_SHARE_READ,
130	NULL, // no SECURITY_ATTRIBUTES structure
131	OPEN_EXISTING, // No special create flags
132	FILE_ATTRIBUTE_SYSTEM \| FILE_FLAG_OVERLAPPED, // overlapped IO
133	NULL); // No template file
134	if (pPriv->hDev != INVALID_HANDLE_VALUE)
135	{
136	Log(("usbProxyWinOpen: hDev=%p\n", pPriv->hDev));
137
138	/*
139	* Check the version
140	*/
141	USBSUP_VERSION version = {0};
142	DWORD cbReturned = 0;
143	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_GET_VERSION, NULL, 0, &version, sizeof(version), &cbReturned, NULL))
144	{
145	if ( version.u32Major == USBDRV_MAJOR_VERSION
146	#if USBDRV_MINOR_VERSION != 0
147	&& version.u32Minor >= USBDRV_MINOR_VERSION
148	#endif
149	)
150	{
151	USBSUP_CLAIMDEV in;
152	in.bInterfaceNumber = 0;
153
154	cbReturned = 0;
155	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_CLAIM_DEVICE, &in, sizeof(in), &in, sizeof(in), &cbReturned, NULL))
156	{
157	if (in.fClaimed)
158	{
159	pPriv->fClaimed = true;
160	#if 0 /** @todo this needs to be enabled if windows chooses a default config. Test with the TrekStor GO Stick. */
161	pProxyDev->iActiveCfg = 1;
162	pProxyDev->cIgnoreSetConfigs = 1;
163	#endif
164
165	rc = RTCritSectInit(&pPriv->CritSect);
166	AssertRC(rc);
167	pPriv->hEventWakeup = CreateEvent(NULL, FALSE, FALSE, NULL);
168	Assert(pPriv->hEventWakeup);
169
170	pPriv->paHandles[0] = pPriv->hEventWakeup;
171
172	return VINF_SUCCESS;
173	}
174
175	rc = VERR_GENERAL_FAILURE;
176	Log(("usbproxy: unable to claim device %x (%s)!!\n", pPriv->hDev, pszAddress));
177	}
178	}
179	else
180	{
181	rc = VERR_VERSION_MISMATCH;
182	Log(("usbproxy: Version mismatch: %d.%d != %d.%d (cur)\n",
183	version.u32Major, version.u32Minor, USBDRV_MAJOR_VERSION, USBDRV_MINOR_VERSION));
184	}
185	}
186
187	/* Convert last error if necessary */
188	if (RT_SUCCESS(rc))
189	{
190	DWORD dwErr = GetLastError();
191	Log(("usbproxy: last error %d\n", dwErr));
192	rc = RTErrConvertFromWin32(dwErr);
193	}
194
195	CloseHandle(pPriv->hDev);
196	pPriv->hDev = INVALID_HANDLE_VALUE;
197	}
198	else
199	{
200	Log(("usbproxy: FAILED to open '%s'! last error %d\n", pszAddress, GetLastError()));
201	rc = VERR_FILE_NOT_FOUND;
202	}
203	}
204	else
205	rc = VERR_NO_MEMORY;
206
207	RTMemFree(pPriv->paQueuedUrbs);
208	RTMemFree(pPriv->paHandles);
209	return rc;
210	}
211
212	/**
213	* Copy the device and free resources associated with the backend.
214	*/
215	static DECLCALLBACK(void) usbProxyWinClose(PUSBPROXYDEV pProxyDev)
216	{
217	/* Here we just close the device and free up p->priv
218	* there is no need to do anything like cancel outstanding requests
219	* that will have been done already
220	*/
221	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
222	Assert(pPriv);
223	if (!pPriv)
224	return;
225	Log(("usbProxyWinClose: %p\n", pPriv->hDev));
226
227	if (pPriv->hDev != INVALID_HANDLE_VALUE)
228	{
229	Assert(pPriv->fClaimed);
230
231	USBSUP_RELEASEDEV in;
232	DWORD cbReturned = 0;
233	in.bInterfaceNumber = pPriv->bInterfaceNumber;
234	if (!DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_RELEASE_DEVICE, &in, sizeof(in), NULL, 0, &cbReturned, NULL))
235	{
236	Log(("usbproxy: usbProxyWinClose: DeviceIoControl %#x failed with %#x!!\n", pPriv->hDev, GetLastError()));
237	}
238	if (!CloseHandle(pPriv->hDev))
239	AssertLogRelMsgFailed(("usbproxy: usbProxyWinClose: CloseHandle %#x failed with %#x!!\n", pPriv->hDev, GetLastError()));
240	pPriv->hDev = INVALID_HANDLE_VALUE;
241	}
242
243	CloseHandle(pPriv->hEventWakeup);
244	RTCritSectDelete(&pPriv->CritSect);
245
246	RTMemFree(pPriv->paQueuedUrbs);
247	RTMemFree(pPriv->paHandles);
248	}
249
250
251	static DECLCALLBACK(int) usbProxyWinReset(PUSBPROXYDEV pProxyDev, bool fResetOnLinux)
252	{
253	RT_NOREF(fResetOnLinux);
254	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
255	DWORD cbReturned;
256	int rc;
257
258	Assert(pPriv);
259
260	Log(("usbproxy: Reset %x\n", pPriv->hDev));
261
262	/* Here we just need to assert reset signalling on the USB device */
263	cbReturned = 0;
264	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_RESET, NULL, 0, NULL, 0, &cbReturned, NULL))
265	{
266	#if 0 /** @todo this needs to be enabled if windows chooses a default config. Test with the TrekStor GO Stick. */
267	pProxyDev->iActiveCfg = 1;
268	pProxyDev->cIgnoreSetConfigs = 2;
269	#else
270	pProxyDev->iActiveCfg = -1;
271	pProxyDev->cIgnoreSetConfigs = 0;
272	#endif
273	return VINF_SUCCESS;
274	}
275
276	rc = GetLastError();
277	if (rc == ERROR_DEVICE_REMOVED)
278	{
279	Log(("usbproxy: device %p unplugged!!\n", pPriv->hDev));
280	pProxyDev->fDetached = true;
281	}
282	return RTErrConvertFromWin32(rc);
283	}
284
285	static DECLCALLBACK(int) usbProxyWinSetConfig(PUSBPROXYDEV pProxyDev, int cfg)
286	{
287	/* Send a SET_CONFIGURATION command to the device. We don't do this
288	* as a normal control message, because the OS might not want to
289	* be left out of the loop on such a thing.
290	*
291	* It would be OK to send a SET_CONFIGURATION control URB at this
292	* point but it has to be synchronous.
293	*/
294	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
295	USBSUP_SET_CONFIG in;
296	DWORD cbReturned;
297
298	Assert(pPriv);
299
300	Log(("usbproxy: Set config of %p to %d\n", pPriv->hDev, cfg));
301	in.bConfigurationValue = cfg;
302
303	/* Here we just need to assert reset signalling on the USB device */
304	cbReturned = 0;
305	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_SET_CONFIG, &in, sizeof(in), NULL, 0, &cbReturned, NULL))
306	return VINF_SUCCESS;
307
308	return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError());
309	}
310
311	static DECLCALLBACK(int) usbProxyWinClaimInterface(PUSBPROXYDEV pProxyDev, int iIf)
312	{
313	/* Called just before we use an interface. Needed on Linux to claim
314	* the interface from the OS, since even when proxying the host OS
315	* might want to allow other programs to use the unused interfaces.
316	* Not relevant for Windows.
317	*/
318	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
319
320	pPriv->bInterfaceNumber = iIf;
321
322	Assert(pPriv);
323	return VINF_SUCCESS;
324	}
325
326	static DECLCALLBACK(int) usbProxyWinReleaseInterface(PUSBPROXYDEV pProxyDev, int iIf)
327	{
328	RT_NOREF(pProxyDev, iIf);
329	/* The opposite of claim_interface. */
330	return VINF_SUCCESS;
331	}
332
333	static DECLCALLBACK(int) usbProxyWinSetInterface(PUSBPROXYDEV pProxyDev, int iIf, int setting)
334	{
335	/* Select an alternate setting for an interface, the same applies
336	* here as for set_config, you may convert this in to a control
337	* message if you want but it must be synchronous
338	*/
339	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
340	USBSUP_SELECT_INTERFACE in;
341	DWORD cbReturned;
342
343	Assert(pPriv);
344
345	Log(("usbproxy: Select interface of %x to %d/%d\n", pPriv->hDev, iIf, setting));
346	in.bInterfaceNumber = iIf;
347	in.bAlternateSetting = setting;
348
349	/* Here we just need to assert reset signalling on the USB device */
350	cbReturned = 0;
351	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_SELECT_INTERFACE, &in, sizeof(in), NULL, 0, &cbReturned, NULL))
352	return VINF_SUCCESS;
353
354	return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError());
355	}
356
357	/**
358	* Clears the halted endpoint 'ep'.
359	*/
360	static DECLCALLBACK(int) usbProxyWinClearHaltedEndPt(PUSBPROXYDEV pProxyDev, unsigned int ep)
361	{
362	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
363	USBSUP_CLEAR_ENDPOINT in;
364	DWORD cbReturned;
365
366	Assert(pPriv);
367
368	Log(("usbproxy: Clear endpoint %d of %x\n", ep, pPriv->hDev));
369	in.bEndpoint = ep;
370
371	cbReturned = 0;
372	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_CLEAR_ENDPOINT, &in, sizeof(in), NULL, 0, &cbReturned, NULL))
373	return VINF_SUCCESS;
374
375	return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError());
376	}
377
378	/**
379	* Aborts a pipe/endpoint (cancels all outstanding URBs on the endpoint).
380	*/
381	static int usbProxyWinAbortEndPt(PUSBPROXYDEV pProxyDev, unsigned int ep)
382	{
383	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
384	USBSUP_CLEAR_ENDPOINT in;
385	DWORD cbReturned;
386
387	Assert(pPriv);
388
389	Log(("usbproxy: Abort endpoint %d of %x\n", ep, pPriv->hDev));
390	in.bEndpoint = ep;
391
392	cbReturned = 0;
393	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_ABORT_ENDPOINT, &in, sizeof(in), NULL, 0, &cbReturned, NULL))
394	return VINF_SUCCESS;
395
396	return usbProxyWinHandleUnpluggedDevice(pProxyDev, GetLastError());
397	}
398
399	/**
400	* @interface_method_impl{USBPROXYBACK,pfnUrbQueue}
401	*/
402	static DECLCALLBACK(int) usbProxyWinUrbQueue(PUSBPROXYDEV pProxyDev, PVUSBURB pUrb)
403	{
404	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
405	Assert(pPriv);
406
407	/* Don't even bother if we can't wait for that many objects. */
408	if (pPriv->cPendingUrbs + pPriv->cQueuedUrbs >= (MAXIMUM_WAIT_OBJECTS - 1))
409	return VERR_OUT_OF_RESOURCES;
410	if (pPriv->cPendingUrbs >= RT_ELEMENTS(pPriv->aPendingUrbs))
411	return VERR_OUT_OF_RESOURCES;
412
413	/*
414	* Allocate and initialize a URB queue structure.
415	*/
416	/** @todo pool these */
417	PQUEUED_URB pQUrbWin = (PQUEUED_URB)RTMemAllocZ(sizeof(QUEUED_URB));
418	if (!pQUrbWin)
419	return VERR_NO_MEMORY;
420
421	switch (pUrb->enmType)
422	{
423	case VUSBXFERTYPE_CTRL: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_CTRL; break; /* you won't ever see these */
424	case VUSBXFERTYPE_ISOC: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_ISOC;
425	pQUrbWin->urbwin.numIsoPkts = pUrb->cIsocPkts;
426	for (unsigned i = 0; i < pUrb->cIsocPkts; ++i)
427	{
428	pQUrbWin->urbwin.aIsoPkts[i].cb = pUrb->aIsocPkts[i].cb;
429	pQUrbWin->urbwin.aIsoPkts[i].off = pUrb->aIsocPkts[i].off;
430	pQUrbWin->urbwin.aIsoPkts[i].stat = USBSUP_XFER_OK;
431	}
432	break;
433	case VUSBXFERTYPE_BULK: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_BULK; break;
434	case VUSBXFERTYPE_INTR: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_INTR; break;
435	case VUSBXFERTYPE_MSG: pQUrbWin->urbwin.type = USBSUP_TRANSFER_TYPE_MSG; break;
436	default:
437	AssertMsgFailed(("Invalid type %d\n", pUrb->enmType));
438	return VERR_INVALID_PARAMETER;
439	}
440
441	switch (pUrb->enmDir)
442	{
443	case VUSBDIRECTION_SETUP:
444	AssertFailed();
445	pQUrbWin->urbwin.dir = USBSUP_DIRECTION_SETUP;
446	break;
447	case VUSBDIRECTION_IN:
448	pQUrbWin->urbwin.dir = USBSUP_DIRECTION_IN;
449	break;
450	case VUSBDIRECTION_OUT:
451	pQUrbWin->urbwin.dir = USBSUP_DIRECTION_OUT;
452	break;
453	default:
454	AssertMsgFailed(("Invalid direction %d\n", pUrb->enmDir));
455	return VERR_INVALID_PARAMETER;
456	}
457
458	Log(("usbproxy: Queue URB %p ep=%d cbData=%d abData=%p cIsocPkts=%d\n", pUrb, pUrb->EndPt, pUrb->cbData, pUrb->abData, pUrb->cIsocPkts));
459
460	pQUrbWin->urb = pUrb;
461	pQUrbWin->urbwin.ep = pUrb->EndPt;
462	pQUrbWin->urbwin.len = pUrb->cbData;
463	pQUrbWin->urbwin.buf = pUrb->abData;
464	pQUrbWin->urbwin.error = USBSUP_XFER_OK;
465	pQUrbWin->urbwin.flags = USBSUP_FLAG_NONE;
466	if (pUrb->enmDir == VUSBDIRECTION_IN && !pUrb->fShortNotOk)
467	pQUrbWin->urbwin.flags = USBSUP_FLAG_SHORT_OK;
468
469	int rc = VINF_SUCCESS;
470	pQUrbWin->overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
471	if (pQUrbWin->overlapped.hEvent != INVALID_HANDLE_VALUE)
472	{
473	pUrb->Dev.pvPrivate = pQUrbWin;
474
475	if ( DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_SEND_URB,
476	&pQUrbWin->urbwin, sizeof(pQUrbWin->urbwin),
477	&pQUrbWin->urbwin, sizeof(pQUrbWin->urbwin),
478	&pQUrbWin->cbReturned, &pQUrbWin->overlapped)
479	\|\| GetLastError() == ERROR_IO_PENDING)
480	{
481	/* insert into the queue */
482	RTCritSectEnter(&pPriv->CritSect);
483	unsigned j = pPriv->cPendingUrbs;
484	Assert(j < RT_ELEMENTS(pPriv->aPendingUrbs));
485	pPriv->aPendingUrbs[j] = pQUrbWin;
486	pPriv->cPendingUrbs++;
487	RTCritSectLeave(&pPriv->CritSect);
488	SetEvent(pPriv->hEventWakeup);
489	return VINF_SUCCESS;
490	}
491	else
492	{
493	DWORD dwErr = GetLastError();
494	if ( dwErr == ERROR_INVALID_HANDLE_STATE
495	\|\| dwErr == ERROR_BAD_COMMAND)
496	{
497	Log(("usbproxy: device %p unplugged!!\n", pPriv->hDev));
498	pProxyDev->fDetached = true;
499	}
500	else
501	AssertMsgFailed(("dwErr=%X urbwin.error=%d (submit urb)\n", dwErr, pQUrbWin->urbwin.error));
502	rc = RTErrConvertFromWin32(dwErr);
503	CloseHandle(pQUrbWin->overlapped.hEvent);
504	pQUrbWin->overlapped.hEvent = INVALID_HANDLE_VALUE;
505	}
506	}
507	#ifdef DEBUG_misha
508	else
509	{
510	AssertMsgFailed(("FAILED!!, hEvent(0x%p)\n", pQUrbWin->overlapped.hEvent));
511	rc = VERR_NO_MEMORY;
512	}
513	#endif
514
515	Assert(pQUrbWin->overlapped.hEvent == INVALID_HANDLE_VALUE);
516	RTMemFree(pQUrbWin);
517	return rc;
518	}
519
520	/**
521	* Convert Windows proxy URB status to VUSB status.
522	*
523	* @returns VUSB status constant.
524	* @param win_status Windows USB proxy status constant.
525	*/
526	static VUSBSTATUS usbProxyWinStatusToVUsbStatus(USBSUP_ERROR win_status)
527	{
528	VUSBSTATUS vusb_status;
529
530	switch (win_status)
531	{
532	case USBSUP_XFER_OK: vusb_status = VUSBSTATUS_OK; break;
533	case USBSUP_XFER_STALL: vusb_status = VUSBSTATUS_STALL; break;
534	case USBSUP_XFER_DNR: vusb_status = VUSBSTATUS_DNR; break;
535	case USBSUP_XFER_CRC: vusb_status = VUSBSTATUS_CRC; break;
536	case USBSUP_XFER_NAC: vusb_status = VUSBSTATUS_NOT_ACCESSED; break;
537	case USBSUP_XFER_UNDERRUN: vusb_status = VUSBSTATUS_DATA_UNDERRUN; break;
538	case USBSUP_XFER_OVERRUN: vusb_status = VUSBSTATUS_DATA_OVERRUN; break;
539	default:
540	AssertMsgFailed(("USB: Invalid error %d\n", win_status));
541	vusb_status = VUSBSTATUS_DNR;
542	break;
543	}
544	return vusb_status;
545	}
546
547	/**
548	* Reap URBs in-flight on a device.
549	*
550	* @returns Pointer to a completed URB.
551	* @returns NULL if no URB was completed.
552	* @param pProxyDev The device.
553	* @param cMillies Number of milliseconds to wait. Use 0 to not
554	* wait at all.
555	*/
556	static DECLCALLBACK(PVUSBURB) usbProxyWinUrbReap(PUSBPROXYDEV pProxyDev, RTMSINTERVAL cMillies)
557	{
558	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
559	AssertReturn(pPriv, NULL);
560
561	/*
562	* There are some unnecessary calls, just return immediately or
563	* WaitForMultipleObjects will fail.
564	*/
565	if ( pPriv->cQueuedUrbs <= 0
566	&& pPriv->cPendingUrbs == 0)
567	{
568	if ( cMillies != 0
569	&& pPriv->cPendingUrbs == 0)
570	{
571	/* Wait for the wakeup call. */
572	DWORD cMilliesWait = cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies;
573	DWORD dwRc = WaitForMultipleObjects(1, &pPriv->hEventWakeup, FALSE, cMilliesWait);
574	NOREF(dwRc);
575	}
576
577	return NULL;
578	}
579
580	again:
581	/* Check for pending URBs. */
582	if (pPriv->cPendingUrbs)
583	{
584	RTCritSectEnter(&pPriv->CritSect);
585
586	/* Ensure we've got sufficient space in the arrays. */
587	if (pPriv->cQueuedUrbs + pPriv->cPendingUrbs + 1 > pPriv->cAllocatedUrbs)
588	{
589	unsigned cNewMax = pPriv->cAllocatedUrbs + pPriv->cPendingUrbs + 1;
590	void pv = RTMemRealloc(pPriv->paHandles, sizeof(pPriv->paHandles[0]) (cNewMax + 1)); /* One extra for the wakeup event. */
591	if (!pv)
592	{
593	AssertMsgFailed(("RTMemRealloc failed for paHandles[%d]", cNewMax));
594	//break;
595	}
596	pPriv->paHandles = (PHANDLE)pv;
597
598	pv = RTMemRealloc(pPriv->paQueuedUrbs, sizeof(pPriv->paQueuedUrbs[0]) * cNewMax);
599	if (!pv)
600	{
601	AssertMsgFailed(("RTMemRealloc failed for paQueuedUrbs[%d]", cNewMax));
602	//break;
603	}
604	pPriv->paQueuedUrbs = (PQUEUED_URB *)pv;
605	pPriv->cAllocatedUrbs = cNewMax;
606	}
607
608	/* Copy the pending URBs over. */
609	for (unsigned i = 0; i < pPriv->cPendingUrbs; i++)
610	{
611	pPriv->paHandles[pPriv->cQueuedUrbs + i] = pPriv->aPendingUrbs[i]->overlapped.hEvent;
612	pPriv->paQueuedUrbs[pPriv->cQueuedUrbs + i] = pPriv->aPendingUrbs[i];
613	}
614	pPriv->cQueuedUrbs += pPriv->cPendingUrbs;
615	pPriv->cPendingUrbs = 0;
616	pPriv->paHandles[pPriv->cQueuedUrbs] = pPriv->hEventWakeup;
617	pPriv->paHandles[pPriv->cQueuedUrbs + 1] = INVALID_HANDLE_VALUE;
618
619	RTCritSectLeave(&pPriv->CritSect);
620	}
621
622	/*
623	* Wait/poll.
624	*
625	* ASSUMPTIONS:
626	* 1. The usbProxyWinUrbReap can not be run concurrently with each other
627	* so racing the cQueuedUrbs access/modification can not occur.
628	* 2. The usbProxyWinUrbReap can not be run concurrently with
629	* usbProxyWinUrbQueue so they can not race the pPriv->paHandles
630	* access/realloc.
631	*/
632	unsigned cQueuedUrbs = ASMAtomicReadU32((volatile uint32_t *)&pPriv->cQueuedUrbs);
633	DWORD cMilliesWait = cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies;
634	PVUSBURB pUrb = NULL;
635	DWORD rc = WaitForMultipleObjects(cQueuedUrbs + 1, pPriv->paHandles, FALSE, cMilliesWait);
636
637	/* If the wakeup event fired return immediately. */
638	if (rc == WAIT_OBJECT_0 + cQueuedUrbs)
639	{
640	if (pPriv->cPendingUrbs)
641	goto again;
642	return NULL;
643	}
644
645	AssertCompile(WAIT_OBJECT_0 == 0);
646	if (/rc >= WAIT_OBJECT_0 && / rc < WAIT_OBJECT_0 + cQueuedUrbs)
647	{
648	RTCritSectEnter(&pPriv->CritSect);
649	unsigned iUrb = rc - WAIT_OBJECT_0;
650	PQUEUED_URB pQUrbWin = pPriv->paQueuedUrbs[iUrb];
651	pUrb = pQUrbWin->urb;
652
653	/*
654	* Remove it from the arrays.
655	*/
656	cQueuedUrbs = --pPriv->cQueuedUrbs;
657	if (cQueuedUrbs != iUrb)
658	{
659	/* Move the array forward */
660	for (unsigned i=iUrb;i<cQueuedUrbs;i++)
661	{
662	pPriv->paHandles[i] = pPriv->paHandles[i+1];
663	pPriv->paQueuedUrbs[i] = pPriv->paQueuedUrbs[i+1];
664	}
665	}
666	pPriv->paHandles[cQueuedUrbs] = pPriv->hEventWakeup;
667	pPriv->paHandles[cQueuedUrbs + 1] = INVALID_HANDLE_VALUE;
668	pPriv->paQueuedUrbs[cQueuedUrbs] = NULL;
669	RTCritSectLeave(&pPriv->CritSect);
670	Assert(cQueuedUrbs == pPriv->cQueuedUrbs);
671
672	/*
673	* Update the urb.
674	*/
675	pUrb->enmStatus = usbProxyWinStatusToVUsbStatus(pQUrbWin->urbwin.error);
676	pUrb->cbData = (uint32_t)pQUrbWin->urbwin.len;
677	if (pUrb->enmType == VUSBXFERTYPE_ISOC)
678	{
679	for (unsigned i = 0; i < pUrb->cIsocPkts; ++i)
680	{
681	/* NB: Windows won't change the packet offsets, but the packets may
682	* be only partially filled or completely empty.
683	*/
684	pUrb->aIsocPkts[i].enmStatus = usbProxyWinStatusToVUsbStatus(pQUrbWin->urbwin.aIsoPkts[i].stat);
685	pUrb->aIsocPkts[i].cb = pQUrbWin->urbwin.aIsoPkts[i].cb;
686	}
687	}
688	Log(("usbproxy: pUrb=%p (#%d) ep=%d cbData=%d status=%d cIsocPkts=%d ready\n",
689	pUrb, rc - WAIT_OBJECT_0, pQUrbWin->urb->EndPt, pQUrbWin->urb->cbData, pUrb->enmStatus, pUrb->cIsocPkts));
690
691	/* free the urb queuing structure */
692	if (pQUrbWin->overlapped.hEvent != INVALID_HANDLE_VALUE)
693	{
694	CloseHandle(pQUrbWin->overlapped.hEvent);
695	pQUrbWin->overlapped.hEvent = INVALID_HANDLE_VALUE;
696	}
697	RTMemFree(pQUrbWin);
698	}
699	else if ( rc == WAIT_FAILED
700	\|\| (rc >= WAIT_ABANDONED_0 && rc < WAIT_ABANDONED_0 + cQueuedUrbs))
701	AssertMsgFailed(("USB: WaitForMultipleObjects %d objects failed with rc=%d and last error %d\n", cQueuedUrbs, rc, GetLastError()));
702
703	return pUrb;
704	}
705
706
707	/**
708	* Cancels an in-flight URB.
709	*
710	* The URB requires reaping, so we don't change its state.
711	*
712	* @remark There isn't a way to cancel a specific URB on Windows.
713	* on darwin. The interface only supports the aborting of
714	* all URBs pending on an endpoint. Luckily that is usually
715	* exactly what the guest wants to do.
716	*/
717	static DECLCALLBACK(int) usbProxyWinUrbCancel(PUSBPROXYDEV pProxyDev, PVUSBURB pUrb)
718	{
719	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
720	PQUEUED_URB pQUrbWin = (PQUEUED_URB)pUrb->Dev.pvPrivate;
721	USBSUP_CLEAR_ENDPOINT in;
722	DWORD cbReturned;
723
724	AssertPtrReturn(pQUrbWin, VERR_INVALID_PARAMETER);
725
726	in.bEndpoint = pUrb->EndPt \| (pUrb->enmDir == VUSBDIRECTION_IN ? 0x80 : 0);
727	Log(("usbproxy: Cancel urb %p, endpoint %x\n", pUrb, in.bEndpoint));
728
729	cbReturned = 0;
730	if (DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_ABORT_ENDPOINT, &in, sizeof(in), NULL, 0, &cbReturned, NULL))
731	return VINF_SUCCESS;
732
733	DWORD dwErr = GetLastError();
734	if ( dwErr == ERROR_INVALID_HANDLE_STATE
735	\|\| dwErr == ERROR_BAD_COMMAND)
736	{
737	Log(("usbproxy: device %x unplugged!!\n", pPriv->hDev));
738	pProxyDev->fDetached = true;
739	return VINF_SUCCESS; /* Fake success and deal with the unplugged device elsewhere. */
740	}
741
742	AssertMsgFailed(("lastErr=%ld\n", dwErr));
743	return RTErrConvertFromWin32(dwErr);
744	}
745
746	static DECLCALLBACK(int) usbProxyWinWakeup(PUSBPROXYDEV pProxyDev)
747	{
748	PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
749
750	SetEvent(pPriv->hEventWakeup);
751	return VINF_SUCCESS;
752	}
753
754	/**
755	* The Win32 USB Proxy Backend.
756	*/
757	extern const USBPROXYBACK g_USBProxyDeviceHost =
758	{
759	/* pszName */
760	"host",
761	/* cbBackend */
762	sizeof(PRIV_USBW32),
763	usbProxyWinOpen,
764	NULL,
765	usbProxyWinClose,
766	usbProxyWinReset,
767	usbProxyWinSetConfig,
768	usbProxyWinClaimInterface,
769	usbProxyWinReleaseInterface,
770	usbProxyWinSetInterface,
771	usbProxyWinClearHaltedEndPt,
772	usbProxyWinUrbQueue,
773	usbProxyWinUrbCancel,
774	usbProxyWinUrbReap,
775	usbProxyWinWakeup,
776	0
777	};
778

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source: vbox/trunk/src/VBox/Devices/USB/win/USBProxyDevice-win.cpp@ 83298

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