USBProxyDevice.cpp@ 100039

Last change on this file since 100039 was 98103, checked in by vboxsync, 22 months ago
Copyright year updates by scm.
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1	/* $Id: USBProxyDevice.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* USBProxy - USB device proxy.
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DRV_USBPROXY
33	#include <VBox/usb.h>
34	#include <VBox/usbfilter.h>
35	#include <VBox/vmm/pdm.h>
36	#include <VBox/err.h>
37	#include <iprt/alloc.h>
38	#include <iprt/string.h>
39	#include <VBox/log.h>
40	#include <iprt/assert.h>
41	#include "USBProxyDevice.h"
42	#include "VUSBInternal.h"
43	#include "VBoxDD.h"
44
45
46	/*********************************************************************************************************************************
47	* Global Variables *
48	*********************************************************************************************************************************/
49	/** A dummy name used early during the construction phase to avoid log crashes. */
50	static char g_szDummyName[] = "proxy xxxx:yyyy";
51
52	/**
53	* Array of supported proxy backends.
54	*/
55	static PCUSBPROXYBACK g_aUsbProxies[] =
56	{
57	&g_USBProxyDeviceHost,
58	&g_USBProxyDeviceVRDP,
59	&g_USBProxyDeviceUsbIp
60	};
61
62	/* Synchronously obtain a standard USB descriptor for a device, used in order
63	* to grab configuration descriptors when we first add the device
64	*/
65	static void *GetStdDescSync(PUSBPROXYDEV pProxyDev, uint8_t iDescType, uint8_t iIdx, uint16_t LangId, uint16_t cbHint)
66	{
67	#define GET_DESC_RETRIES 6
68	int cRetries = 0;
69	uint16_t cbInitialHint = cbHint;
70
71	LogFlow(("GetStdDescSync: pProxyDev=%s, iDescType=%d, iIdx=%d, LangId=%04X, cbHint=%u\n", pProxyDev->pUsbIns->pszName, iDescType, iIdx, LangId, cbHint));
72	for (;;)
73	{
74	/*
75	* Setup a MSG URB, queue and reap it.
76	*/
77	int rc = VINF_SUCCESS;
78	VUSBURB Urb;
79	AssertCompile(RT_SIZEOFMEMB(VUSBURB, abData) >= _4K);
80	RT_ZERO(Urb);
81	Urb.u32Magic = VUSBURB_MAGIC;
82	Urb.enmState = VUSBURBSTATE_IN_FLIGHT;
83	Urb.pszDesc = (char*)"URB sync";
84	Urb.DstAddress = 0;
85	Urb.EndPt = 0;
86	Urb.enmType = VUSBXFERTYPE_MSG;
87	Urb.enmDir = VUSBDIRECTION_IN;
88	Urb.fShortNotOk = false;
89	Urb.enmStatus = VUSBSTATUS_INVALID;
90	cbHint = RT_MIN(cbHint, sizeof(Urb.abData) - sizeof(VUSBSETUP));
91	Urb.cbData = cbHint + sizeof(VUSBSETUP);
92
93	PVUSBSETUP pSetup = (PVUSBSETUP)Urb.abData;
94	pSetup->bmRequestType = VUSB_DIR_TO_HOST \| VUSB_REQ_STANDARD \| VUSB_TO_DEVICE;
95	pSetup->bRequest = VUSB_REQ_GET_DESCRIPTOR;
96	pSetup->wValue = (iDescType << 8) \| iIdx;
97	pSetup->wIndex = LangId;
98	pSetup->wLength = cbHint;
99
100	uint8_t pbDesc = (uint8_t )(pSetup + 1);
101	uint32_t cbDesc = 0;
102	PVUSBURB pUrbReaped = NULL;
103
104	rc = pProxyDev->pOps->pfnUrbQueue(pProxyDev, &Urb);
105	if (RT_FAILURE(rc))
106	{
107	Log(("GetStdDescSync: pfnUrbQueue failed, rc=%d\n", rc));
108	goto err;
109	}
110
111	/* Don't wait forever, it's just a simple request that should
112	return immediately. Since we're executing in the EMT thread
113	it's important not to get stuck here. (Some of the builtin
114	iMac devices may refuse to respond for instance.) */
115	pUrbReaped = pProxyDev->pOps->pfnUrbReap(pProxyDev, 5000 /* ms */);
116	if (!pUrbReaped)
117	{
118	Log(("GetStdDescSync: pfnUrbReap returned NULL, cancel and re-reap\n"));
119	rc = pProxyDev->pOps->pfnUrbCancel(pProxyDev, &Urb);
120	AssertRC(rc);
121	/** @todo This breaks the comment above... */
122	pUrbReaped = pProxyDev->pOps->pfnUrbReap(pProxyDev, RT_INDEFINITE_WAIT);
123	}
124	if (pUrbReaped != &Urb)
125	{
126	Log(("GetStdDescSync: pfnUrbReap failed, pUrbReaped=%p\n", pUrbReaped));
127	goto err;
128	}
129
130	if (Urb.enmStatus != VUSBSTATUS_OK)
131	{
132	Log(("GetStdDescSync: Urb.enmStatus=%d\n", Urb.enmStatus));
133	goto err;
134	}
135
136	/*
137	* Check the length, config descriptors have total_length field
138	*/
139	if (iDescType == VUSB_DT_CONFIG)
140	{
141	if (Urb.cbData < sizeof(VUSBSETUP) + 4)
142	{
143	Log(("GetStdDescSync: Urb.cbData=%#x (min 4)\n", Urb.cbData));
144	goto err;
145	}
146	cbDesc = RT_LE2H_U16(((uint16_t *)pbDesc)[1]);
147	}
148	else
149	{
150	if (Urb.cbData < sizeof(VUSBSETUP) + 1)
151	{
152	Log(("GetStdDescSync: Urb.cbData=%#x (min 1)\n", Urb.cbData));
153	goto err;
154	}
155	cbDesc = ((uint8_t *)pbDesc)[0];
156	}
157
158	Log(("GetStdDescSync: got Urb.cbData=%u, cbDesc=%u cbHint=%u\n", Urb.cbData, cbDesc, cbHint));
159
160	if ( Urb.cbData == cbHint + sizeof(VUSBSETUP)
161	&& cbDesc > Urb.cbData - sizeof(VUSBSETUP))
162	{
163	cbHint = cbDesc;
164	Log(("GetStdDescSync: Part descriptor, Urb.cbData=%u, cbDesc=%u cbHint=%u\n", Urb.cbData, cbDesc, cbHint));
165
166	if (cbHint > sizeof(Urb.abData))
167	{
168	Log(("GetStdDescSync: cbHint=%u, Urb.abData=%u, retrying immediately\n", cbHint, sizeof(Urb.abData)));
169	/* Not an error, go again without incrementing retry count or delaying. */
170	continue;
171	}
172
173	goto err;
174	}
175
176	if (cbDesc > Urb.cbData - sizeof(VUSBSETUP))
177	{
178	Log(("GetStdDescSync: Descriptor length too short, cbDesc=%u, Urb.cbData=%u\n", cbDesc, Urb.cbData));
179	goto err;
180	}
181
182	if ( cbInitialHint != cbHint
183	&& ( cbDesc != cbHint
184	\|\| Urb.cbData < cbInitialHint) )
185	{
186	Log(("GetStdDescSync: Descriptor length incorrect, cbDesc=%u, Urb.cbData=%u, cbHint=%u\n", cbDesc, Urb.cbData, cbHint));
187	goto err;
188	}
189
190	#ifdef LOG_ENABLED
191	vusbUrbTrace(&Urb, "GetStdDescSync", true);
192	#endif
193
194	/*
195	* Fine, we got everything return a heap duplicate of the descriptor.
196	*/
197	return RTMemDup(pbDesc, cbDesc);
198
199	err:
200	cRetries++;
201	if (cRetries < GET_DESC_RETRIES)
202	{
203	Log(("GetStdDescSync: Retrying %u/%u\n", cRetries, GET_DESC_RETRIES));
204	RTThreadSleep(100);
205	continue;
206	}
207	else
208	{
209	Log(("GetStdDescSync: Retries exceeded %u/%u. Giving up.\n", cRetries, GET_DESC_RETRIES));
210	break;
211	}
212	}
213
214	return NULL;
215	}
216
217	/**
218	* Frees a descriptor returned by GetStdDescSync().
219	*/
220	static void free_desc(void *pvDesc)
221	{
222	RTMemFree(pvDesc);
223	}
224
225	/**
226	* Get and a device descriptor and byteswap it appropriately.
227	*/
228	static bool usbProxyGetDeviceDesc(PUSBPROXYDEV pProxyDev, PVUSBDESCDEVICE pOut)
229	{
230	/*
231	* Get the descriptor from the device.
232	*/
233	PVUSBDESCDEVICE pIn = (PVUSBDESCDEVICE)GetStdDescSync(pProxyDev, VUSB_DT_DEVICE, 0, 0, VUSB_DT_DEVICE_MIN_LEN);
234	if (!pIn)
235	{
236	Log(("usbProxyGetDeviceDesc: pProxyDev=%s: GetStdDescSync failed\n", pProxyDev->pUsbIns->pszName));
237	return false;
238	}
239	if (pIn->bLength < VUSB_DT_DEVICE_MIN_LEN)
240	{
241	Log(("usb-proxy: pProxyDev=%s: Corrupted device descriptor. bLength=%d\n", pProxyDev->pUsbIns->pszName, pIn->bLength));
242	return false;
243	}
244
245	/*
246	* Convert it.
247	*/
248	pOut->bLength = VUSB_DT_DEVICE_MIN_LEN;
249	pOut->bDescriptorType = VUSB_DT_DEVICE;
250	pOut->bcdUSB = RT_LE2H_U16(pIn->bcdUSB);
251	pOut->bDeviceClass = pIn->bDeviceClass;
252	pOut->bDeviceSubClass = pIn->bDeviceSubClass;
253	pOut->bDeviceProtocol = pIn->bDeviceProtocol;
254	pOut->bMaxPacketSize0 = pIn->bMaxPacketSize0;
255	pOut->idVendor = RT_LE2H_U16(pIn->idVendor);
256	pOut->idProduct = RT_LE2H_U16(pIn->idProduct);
257	pOut->bcdDevice = RT_LE2H_U16(pIn->bcdDevice);
258	pOut->iManufacturer = pIn->iManufacturer;
259	pOut->iProduct = pIn->iProduct;
260	pOut->iSerialNumber = pIn->iSerialNumber;
261	pOut->bNumConfigurations = pIn->bNumConfigurations;
262
263	free_desc(pIn);
264	return true;
265	}
266
267	/**
268	* Count the numbers and types of each kind of descriptor that we need to
269	* copy out of the config descriptor
270	*/
271	struct desc_counts
272	{
273	size_t num_ed, num_id, num_if;
274	/** bitmap (128 bits) */
275	uint32_t idmap[4];
276	};
277
278	static int count_descriptors(struct desc_counts cnt, uint8_t buf, size_t len)
279	{
280	PVUSBDESCCONFIG cfg;
281	uint8_t tmp, end;
282	uint32_t i, x;
283
284	memset(cnt, 0, sizeof(*cnt));
285
286	end = buf + len;
287
288	cfg = (PVUSBDESCCONFIG)buf;
289	if ( cfg->bLength < VUSB_DT_CONFIG_MIN_LEN )
290	return 0;
291	if ( cfg->bLength > len )
292	return 0;
293
294	for (tmp = buf + cfg->bLength; ((tmp + 1) < end) && tmp; tmp += tmp)
295	{
296	uint8_t type;
297	uint32_t ifnum;
298	PVUSBDESCINTERFACE id;
299	PVUSBDESCENDPOINT ed;
300
301	type = *(tmp + 1);
302
303	switch ( type ) {
304	case VUSB_DT_INTERFACE:
305	id = (PVUSBDESCINTERFACE)tmp;
306	if ( id->bLength < VUSB_DT_INTERFACE_MIN_LEN )
307	return 0;
308	cnt->num_id++;
309	ifnum = id->bInterfaceNumber;
310	cnt->idmap[ifnum >> 6] \|= (1 << (ifnum & 0x1f));
311	break;
312	case VUSB_DT_ENDPOINT:
313	ed = (PVUSBDESCENDPOINT)tmp;
314	if ( ed->bLength < VUSB_DT_ENDPOINT_MIN_LEN )
315	return 0;
316	cnt->num_ed++;
317	break;
318	default:
319	break;
320	}
321	}
322
323	/* count interfaces */
324	for(i=0; i < RT_ELEMENTS(cnt->idmap); i++)
325	for(x=1; x; x<<=1)
326	if ( cnt->idmap[i] & x )
327	cnt->num_if++;
328
329	return 1;
330	}
331
332	/* Given the pointer to a configuration/interface/endpoint descriptor, find any following
333	* non-standard (vendor or class) descriptors.
334	*/
335	static const void collect_stray_bits(uint8_t this_desc, uint8_t end, uint16_t cbExtra)
336	{
337	uint8_t tmp, buf;
338	uint8_t type;
339
340	Assert((this_desc + 1) == VUSB_DT_INTERFACE \|\| (this_desc + 1) == VUSB_DT_ENDPOINT \|\| *(this_desc + 1) == VUSB_DT_CONFIG);
341	buf = this_desc;
342
343	/* Skip the current configuration/interface/endpoint descriptor. */
344	buf += (uint8_t )buf;
345
346	/* Loop until we find another descriptor we understand. */
347	for (tmp = buf; ((tmp + 1) < end) && tmp; tmp += tmp)
348	{
349	type = *(tmp + 1);
350	if (type == VUSB_DT_INTERFACE \|\| type == VUSB_DT_ENDPOINT)
351	break;
352	}
353	*cbExtra = tmp - buf;
354	if (*cbExtra)
355	return buf;
356	else
357	return NULL;
358	}
359
360	/* Setup a vusb_interface structure given some preallocated structures
361	* to use, (we counted them already)
362	*/
363	static int copy_interface(PVUSBINTERFACE pIf, uint8_t ifnum,
364	PVUSBDESCINTERFACEEX id, PVUSBDESCENDPOINTEX ed,
365	uint8_t *buf, size_t len)
366	{
367	PVUSBDESCINTERFACEEX cur_if = NULL;
368	uint32_t altmap[4] = {0,};
369	uint8_t tmp, end = buf + len;
370	uint8_t alt;
371	int state;
372	size_t num_ep = 0;
373
374	buf += (uint8_t )buf;
375
376	pIf->cSettings = 0;
377	pIf->paSettings = NULL;
378
379	for (tmp = buf, state = 0; ((tmp + 1) < end) && tmp; tmp += tmp)
380	{
381	uint8_t type;
382	PVUSBDESCINTERFACE ifd;
383	PVUSBDESCENDPOINT epd;
384	PVUSBDESCENDPOINTEX cur_ep;
385
386	type = tmp[1];
387
388	switch ( type ) {
389	case VUSB_DT_INTERFACE:
390	state = 0;
391	ifd = (PVUSBDESCINTERFACE)tmp;
392
393	/* Ignoring this interface */
394	if ( ifd->bInterfaceNumber != ifnum )
395	break;
396
397	/* Check we didn't see this alternate setting already
398	* because that will break stuff
399	*/
400	alt = ifd->bAlternateSetting;
401	if ( altmap[alt >> 6] & (1 << (alt & 0x1f)) )
402	return 0;
403	altmap[alt >> 6] \|= (1 << (alt & 0x1f));
404
405	cur_if = *id;
406	(*id)++;
407	if ( pIf->cSettings == 0 )
408	pIf->paSettings = cur_if;
409
410	memcpy(cur_if, ifd, sizeof(cur_if->Core));
411
412	/* Point to additional interface descriptor bytes, if any. */
413	AssertCompile(sizeof(cur_if->Core) == VUSB_DT_INTERFACE_MIN_LEN);
414	if (cur_if->Core.bLength - VUSB_DT_INTERFACE_MIN_LEN > 0)
415	cur_if->pvMore = tmp + VUSB_DT_INTERFACE_MIN_LEN;
416	else
417	cur_if->pvMore = NULL;
418
419	cur_if->pvClass = collect_stray_bits(tmp, end, &cur_if->cbClass);
420
421	pIf->cSettings++;
422
423	state = 1;
424	num_ep = 0;
425	break;
426	case VUSB_DT_ENDPOINT:
427	if ( state == 0 )
428	break;
429
430	epd = (PVUSBDESCENDPOINT)tmp;
431
432	cur_ep = *ed;
433	(*ed)++;
434
435	if ( num_ep == 0 )
436	cur_if->paEndpoints = cur_ep;
437
438	if ( num_ep > cur_if->Core.bNumEndpoints )
439	return 0;
440
441	memcpy(cur_ep, epd, sizeof(cur_ep->Core));
442
443	/* Point to additional endpoint descriptor bytes, if any. */
444	AssertCompile(sizeof(cur_ep->Core) == VUSB_DT_ENDPOINT_MIN_LEN);
445	if (cur_ep->Core.bLength - VUSB_DT_ENDPOINT_MIN_LEN > 0)
446	cur_ep->pvMore = tmp + VUSB_DT_ENDPOINT_MIN_LEN;
447	else
448	cur_ep->pvMore = NULL;
449
450	cur_ep->pvClass = collect_stray_bits(tmp, end, &cur_ep->cbClass);
451
452	cur_ep->Core.wMaxPacketSize = RT_LE2H_U16(cur_ep->Core.wMaxPacketSize);
453
454	num_ep++;
455	break;
456	default:
457	/* Skip unknown descriptors. */
458	break;
459	}
460	}
461
462	return 1;
463	}
464
465	/**
466	* Copy all of a devices config descriptors, this is needed so that the USB
467	* core layer knows all about how to map the different functions on to the
468	* virtual USB bus.
469	*/
470	static bool copy_config(PUSBPROXYDEV pProxyDev, uint8_t idx, PVUSBDESCCONFIGEX out)
471	{
472	PVUSBDESCCONFIG cfg;
473	PVUSBINTERFACE pIf;
474	PVUSBDESCINTERFACEEX ifd;
475	PVUSBDESCENDPOINTEX epd;
476	struct desc_counts cnt;
477	void *descs;
478	size_t tot_len;
479	size_t cbIface;
480	uint32_t i, x;
481	uint8_t tmp, end;
482
483	descs = GetStdDescSync(pProxyDev, VUSB_DT_CONFIG, idx, 0, VUSB_DT_CONFIG_MIN_LEN);
484	if ( descs == NULL ) {
485	Log(("copy_config: GetStdDescSync failed\n"));
486	return false;
487	}
488
489	cfg = (PVUSBDESCCONFIG)descs;
490	tot_len = RT_LE2H_U16(cfg->wTotalLength);
491
492	if ( !count_descriptors(&cnt, (uint8_t *)descs, tot_len) ) {
493	Log(("copy_config: count_descriptors failed\n"));
494	goto err;
495	}
496
497	if ( cfg->bNumInterfaces != cnt.num_if )
498	Log(("usb-proxy: config%u: bNumInterfaces %u != %u\n",
499	idx, cfg->bNumInterfaces, cnt.num_if));
500
501	Log(("usb-proxy: config%u: %u bytes id=%u ed=%u if=%u\n",
502	idx, tot_len, cnt.num_id, cnt.num_ed, cnt.num_if));
503
504	cbIface = cnt.num_if * sizeof(VUSBINTERFACE)
505	+ cnt.num_id * sizeof(VUSBDESCINTERFACEEX)
506	+ cnt.num_ed * sizeof(VUSBDESCENDPOINTEX);
507	out->paIfs = (PCVUSBINTERFACE)RTMemAllocZ(cbIface);
508	if ( out->paIfs == NULL ) {
509	free_desc(descs);
510	return false;
511	}
512
513	/* Stash a pointer to the raw config descriptor; we may need bits of it later. */
514	out->pvOriginal = descs;
515
516	pIf = (PVUSBINTERFACE)out->paIfs;
517	ifd = (PVUSBDESCINTERFACEEX)&pIf[cnt.num_if];
518	epd = (PVUSBDESCENDPOINTEX)&ifd[cnt.num_id];
519
520	out->Core.bLength = cfg->bLength;
521	out->Core.bDescriptorType = cfg->bDescriptorType;
522	out->Core.wTotalLength = 0; /* Auto Calculated */
523	out->Core.bNumInterfaces = (uint8_t)cnt.num_if;
524	out->Core.bConfigurationValue = cfg->bConfigurationValue;
525	out->Core.iConfiguration = cfg->iConfiguration;
526	out->Core.bmAttributes = cfg->bmAttributes;
527	out->Core.MaxPower = cfg->MaxPower;
528
529	tmp = (uint8_t *)out->pvOriginal;
530	end = tmp + tot_len;
531
532	/* Point to additional configuration descriptor bytes, if any. */
533	AssertCompile(sizeof(out->Core) == VUSB_DT_CONFIG_MIN_LEN);
534	if (out->Core.bLength - VUSB_DT_CONFIG_MIN_LEN > 0)
535	out->pvMore = tmp + VUSB_DT_CONFIG_MIN_LEN;
536	else
537	out->pvMore = NULL;
538
539	/* Typically there might be an interface association descriptor here. */
540	out->pvClass = collect_stray_bits(tmp, end, &out->cbClass);
541
542	for(i=0; i < 4; i++)
543	for(x=0; x < 32; x++)
544	if ( cnt.idmap[i] & (1 << x) )
545	if ( !copy_interface(pIf++, (i << 6) \| x, &ifd, &epd, (uint8_t *)out->pvOriginal, tot_len) ) {
546	Log(("copy_interface(%d,,) failed\n", pIf - 1));
547	goto err;
548	}
549
550	return true;
551	err:
552	Log(("usb-proxy: config%u: Corrupted configuration descriptor\n", idx));
553	free_desc(descs);
554	return false;
555	}
556
557
558	/**
559	* Edit out masked interface descriptors.
560	*
561	* @param pProxyDev The proxy device
562	*/
563	static void usbProxyDevEditOutMaskedIfs(PUSBPROXYDEV pProxyDev)
564	{
565	unsigned cRemoved = 0;
566
567	PVUSBDESCCONFIGEX paCfgs = pProxyDev->paCfgDescs;
568	for (unsigned iCfg = 0; iCfg < pProxyDev->DevDesc.bNumConfigurations; iCfg++)
569	{
570	PVUSBINTERFACE paIfs = (PVUSBINTERFACE)paCfgs[iCfg].paIfs;
571	for (unsigned iIf = 0; iIf < paCfgs[iCfg].Core.bNumInterfaces; iIf++)
572	for (uint32_t iAlt = 0; iAlt < paIfs[iIf].cSettings; iAlt++)
573	if ( paIfs[iIf].paSettings[iAlt].Core.bInterfaceNumber < 32
574	&& ((1 << paIfs[iIf].paSettings[iAlt].Core.bInterfaceNumber) & pProxyDev->fMaskedIfs))
575	{
576	Log(("usb-proxy: removing interface #%d (iIf=%d iAlt=%d) on config #%d (iCfg=%d)\n",
577	paIfs[iIf].paSettings[iAlt].Core.bInterfaceNumber, iIf, iAlt, paCfgs[iCfg].Core.bConfigurationValue, iCfg));
578	cRemoved++;
579
580	paCfgs[iCfg].Core.bNumInterfaces--;
581	unsigned cToCopy = paCfgs[iCfg].Core.bNumInterfaces - iIf;
582	if (cToCopy)
583	memmove(&paIfs[iIf], &paIfs[iIf + 1], sizeof(paIfs[0]) * cToCopy);
584	memset(&paIfs[iIf + cToCopy], '\0', sizeof(paIfs[0]));
585	break;
586	}
587	}
588
589	Log(("usb-proxy: edited out %d interface(s).\n", cRemoved));
590	}
591
592
593	/**
594	* @interface_method_impl{PDMUSBREG,pfnUsbReset}
595	*
596	* USB Device Proxy: Call OS specific code to reset the device.
597	*/
598	static DECLCALLBACK(int) usbProxyDevReset(PPDMUSBINS pUsbIns, bool fResetOnLinux)
599	{
600	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
601
602	if (pProxyDev->fMaskedIfs)
603	{
604	Log(("usbProxyDevReset: pProxyDev=%s - ignoring reset request fMaskedIfs=%#x\n", pUsbIns->pszName, pProxyDev->fMaskedIfs));
605	return VINF_SUCCESS;
606	}
607	LogFlow(("usbProxyDevReset: pProxyDev=%s\n", pUsbIns->pszName));
608	return pProxyDev->pOps->pfnReset(pProxyDev, fResetOnLinux);
609	}
610
611
612	/**
613	* @interface_method_impl{PDMUSBREG,pfnUsbGetDescriptorCache}
614	*/
615	static DECLCALLBACK(PCPDMUSBDESCCACHE) usbProxyDevGetDescriptorCache(PPDMUSBINS pUsbIns)
616	{
617	PUSBPROXYDEV pThis = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
618	return &pThis->DescCache;
619	}
620
621
622	/**
623	* @interface_method_impl{PDMUSBREG,pfnUsbSetConfiguration}
624	*
625	* USB Device Proxy: Release claimed interfaces, tell the OS+device about the config change, claim the new interfaces.
626	*/
627	static DECLCALLBACK(int) usbProxyDevSetConfiguration(PPDMUSBINS pUsbIns, uint8_t bConfigurationValue,
628	const void pvOldCfgDesc, const void pvOldIfState, const void *pvNewCfgDesc)
629	{
630	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
631	LogFlow(("usbProxyDevSetConfiguration: pProxyDev=%s iActiveCfg=%d bConfigurationValue=%d\n",
632	pUsbIns->pszName, pProxyDev->iActiveCfg, bConfigurationValue));
633
634	/*
635	* Release the current config.
636	*/
637	if (pvOldCfgDesc)
638	{
639	PCVUSBDESCCONFIGEX pOldCfgDesc = (PCVUSBDESCCONFIGEX)pvOldCfgDesc;
640	PCVUSBINTERFACESTATE pOldIfState = (PCVUSBINTERFACESTATE)pvOldIfState;
641	for (unsigned i = 0; i < pOldCfgDesc->Core.bNumInterfaces; i++)
642	if (pOldIfState[i].pCurIfDesc)
643	pProxyDev->pOps->pfnReleaseInterface(pProxyDev, pOldIfState[i].pCurIfDesc->Core.bInterfaceNumber);
644	}
645
646	/*
647	* Do the actual SET_CONFIGURE.
648	* The mess here is because most backends will already have selected a
649	* configuration and there are a bunch of devices which will freak out
650	* if we do SET_CONFIGURE twice with the same value. (PalmOne, TrekStor USB-StickGO, ..)
651	*
652	* After open and reset the backend should use the members iActiveCfg and cIgnoreSetConfigs
653	* to indicate the new configuration state and what to do on the next SET_CONFIGURATION call.
654	*/
655	if ( pProxyDev->iActiveCfg != bConfigurationValue
656	\|\| ( bConfigurationValue == 0
657	&& pProxyDev->iActiveCfg != -1 /* this test doesn't make sense, we know it's 0 */
658	&& pProxyDev->cIgnoreSetConfigs >= 2)
659	\|\| !pProxyDev->cIgnoreSetConfigs)
660	{
661	pProxyDev->cIgnoreSetConfigs = 0;
662	int rc = pProxyDev->pOps->pfnSetConfig(pProxyDev, bConfigurationValue);
663	if (RT_FAILURE(rc))
664	{
665	pProxyDev->iActiveCfg = -1;
666	return rc;
667	}
668	pProxyDev->iActiveCfg = bConfigurationValue;
669	}
670	else if (pProxyDev->cIgnoreSetConfigs > 0)
671	pProxyDev->cIgnoreSetConfigs--;
672
673	/*
674	* Claim the interfaces.
675	*/
676	PCVUSBDESCCONFIGEX pNewCfgDesc = (PCVUSBDESCCONFIGEX)pvNewCfgDesc;
677	Assert(pNewCfgDesc->Core.bConfigurationValue == bConfigurationValue);
678	for (unsigned iIf = 0; iIf < pNewCfgDesc->Core.bNumInterfaces; iIf++)
679	{
680	PCVUSBINTERFACE pIf = &pNewCfgDesc->paIfs[iIf];
681	for (uint32_t iAlt = 0; iAlt < pIf->cSettings; iAlt++)
682	{
683	if (pIf->paSettings[iAlt].Core.bAlternateSetting != 0)
684	continue;
685	pProxyDev->pOps->pfnClaimInterface(pProxyDev, pIf->paSettings[iAlt].Core.bInterfaceNumber);
686	/* ignore failures - the backend deals with that and does the necessary logging. */
687	break;
688	}
689	}
690
691	return VINF_SUCCESS;
692	}
693
694
695	/**
696	* @interface_method_impl{PDMUSBREG,pfnUsbSetInterface}
697	*
698	* USB Device Proxy: Call OS specific code to select alternate interface settings.
699	*/
700	static DECLCALLBACK(int) usbProxyDevSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting)
701	{
702	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
703	LogFlow(("usbProxyDevSetInterface: pProxyDev=%s bInterfaceNumber=%d bAlternateSetting=%d\n",
704	pUsbIns->pszName, bInterfaceNumber, bAlternateSetting));
705
706	return pProxyDev->pOps->pfnSetInterface(pProxyDev, bInterfaceNumber, bAlternateSetting);
707	}
708
709
710	/**
711	* @interface_method_impl{PDMUSBREG,pfnUsbClearHaltedEndpoint}
712	*
713	* USB Device Proxy: Call OS specific code to clear the endpoint.
714	*/
715	static DECLCALLBACK(int) usbProxyDevClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint)
716	{
717	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
718	LogFlow(("usbProxyDevClearHaltedEndpoint: pProxyDev=%s uEndpoint=%u\n",
719	pUsbIns->pszName, uEndpoint));
720
721	return pProxyDev->pOps->pfnClearHaltedEndpoint(pProxyDev, uEndpoint);
722	}
723
724
725	/**
726	* @interface_method_impl{PDMUSBREG,pfnUrbQueue}
727	*
728	* USB Device Proxy: Call OS specific code.
729	*/
730	static DECLCALLBACK(int) usbProxyDevUrbQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
731	{
732	int rc = VINF_SUCCESS;
733	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
734	rc = pProxyDev->pOps->pfnUrbQueue(pProxyDev, pUrb);
735	if (RT_FAILURE(rc))
736	return pProxyDev->fDetached
737	? VERR_VUSB_DEVICE_NOT_ATTACHED
738	: VERR_VUSB_FAILED_TO_QUEUE_URB;
739	return rc;
740	}
741
742
743	/**
744	* @interface_method_impl{PDMUSBREG,pfnUrbCancel}
745	*
746	* USB Device Proxy: Call OS specific code.
747	*/
748	static DECLCALLBACK(int) usbProxyDevUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
749	{
750	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
751	return pProxyDev->pOps->pfnUrbCancel(pProxyDev, pUrb);
752	}
753
754
755	/**
756	* @interface_method_impl{PDMUSBREG,pfnUrbReap}
757	*
758	* USB Device Proxy: Call OS specific code.
759	*/
760	static DECLCALLBACK(PVUSBURB) usbProxyDevUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies)
761	{
762	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
763	PVUSBURB pUrb = pProxyDev->pOps->pfnUrbReap(pProxyDev, cMillies);
764	if ( pUrb
765	&& pUrb->enmState == VUSBURBSTATE_CANCELLED
766	&& pUrb->enmStatus == VUSBSTATUS_OK)
767	pUrb->enmStatus = VUSBSTATUS_DNR;
768	return pUrb;
769	}
770
771
772	/**
773	* @interface_method_impl{PDMUSBREG,pfnWakeup}
774	*
775	* USB Device Proxy: Call OS specific code.
776	*/
777	static DECLCALLBACK(int) usbProxyDevWakeup(PPDMUSBINS pUsbIns)
778	{
779	PUSBPROXYDEV pProxyDev = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
780
781	return pProxyDev->pOps->pfnWakeup(pProxyDev);
782	}
783
784
785	/** @interface_method_impl{PDMUSBREG,pfnDestruct} */
786	static DECLCALLBACK(void) usbProxyDestruct(PPDMUSBINS pUsbIns)
787	{
788	PDMUSB_CHECK_VERSIONS_RETURN_VOID(pUsbIns);
789	PUSBPROXYDEV pThis = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
790	Log(("usbProxyDestruct: destroying pProxyDev=%s\n", pUsbIns->pszName));
791
792	/* close it. */
793	if (pThis->fOpened)
794	{
795	pThis->pOps->pfnClose(pThis);
796	pThis->fOpened = false;
797	}
798
799	/* free the config descriptors. */
800	if (pThis->paCfgDescs)
801	{
802	for (unsigned i = 0; i < pThis->DevDesc.bNumConfigurations; i++)
803	{
804	RTMemFree((void *)pThis->paCfgDescs[i].paIfs);
805	RTMemFree((void *)pThis->paCfgDescs[i].pvOriginal);
806	}
807	RTMemFree(pThis->paCfgDescs);
808	pThis->paCfgDescs = NULL;
809	}
810
811	/* free dev */
812	if (&g_szDummyName[0] != pUsbIns->pszName)
813	RTStrFree(pUsbIns->pszName);
814	pUsbIns->pszName = NULL;
815
816	if (pThis->pvInstanceDataR3)
817	RTMemFree(pThis->pvInstanceDataR3);
818	}
819
820
821	/**
822	* Helper function used by usbProxyConstruct when
823	* reading a filter from CFG.
824	*
825	* @returns VBox status code.
826	* @param pFilter The filter.
827	* @param enmFieldIdx The filter field indext.
828	* @param pHlp The USB helper callback table.
829	* @param pNode The CFGM node.
830	* @param pszExact The exact value name.
831	* @param pszExpr The expression value name.
832	*/
833	static int usbProxyQueryNum(PUSBFILTER pFilter, USBFILTERIDX enmFieldIdx,
834	PCPDMUSBHLP pHlp, PCFGMNODE pNode,
835	const char pszExact, const char pszExpr)
836	{
837	char szTmp[256];
838
839	/* try exact first */
840	uint16_t u16;
841	int rc = pHlp->pfnCFGMQueryU16(pNode, pszExact, &u16);
842	if (RT_SUCCESS(rc))
843	{
844	rc = USBFilterSetNumExact(pFilter, enmFieldIdx, u16, true);
845	AssertRCReturn(rc, rc);
846
847	/* make sure only the exact attribute is present. */
848	rc = pHlp->pfnCFGMQueryString(pNode, pszExpr, szTmp, sizeof(szTmp));
849	if (RT_UNLIKELY(rc != VERR_CFGM_VALUE_NOT_FOUND))
850	{
851	szTmp[0] = '\0';
852	pHlp->pfnCFGMGetName(pNode, szTmp, sizeof(szTmp));
853	LogRel(("usbProxyConstruct: %s: Both %s and %s are present!\n", szTmp, pszExact, pszExpr));
854	return VERR_INVALID_PARAMETER;
855	}
856	return VINF_SUCCESS;
857	}
858	if (RT_UNLIKELY(rc != VERR_CFGM_VALUE_NOT_FOUND))
859	{
860	szTmp[0] = '\0';
861	pHlp->pfnCFGMGetName(pNode, szTmp, sizeof(szTmp));
862	LogRel(("usbProxyConstruct: %s: %s query failed, rc=%Rrc\n", szTmp, pszExact, rc));
863	return rc;
864	}
865
866	/* expression? */
867	rc = pHlp->pfnCFGMQueryString(pNode, pszExpr, szTmp, sizeof(szTmp));
868	if (RT_SUCCESS(rc))
869	{
870	rc = USBFilterSetNumExpression(pFilter, enmFieldIdx, szTmp, true);
871	AssertRCReturn(rc, rc);
872	return VINF_SUCCESS;
873	}
874	if (RT_UNLIKELY(rc != VERR_CFGM_VALUE_NOT_FOUND))
875	{
876	szTmp[0] = '\0';
877	pHlp->pfnCFGMGetName(pNode, szTmp, sizeof(szTmp));
878	LogRel(("usbProxyConstruct: %s: %s query failed, rc=%Rrc\n", szTmp, pszExpr, rc));
879	return rc;
880	}
881
882	return VINF_SUCCESS;
883	}
884
885
886	/** @interface_method_impl{PDMUSBREG,pfnConstruct} */
887	static DECLCALLBACK(int) usbProxyConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal)
888	{
889	PDMUSB_CHECK_VERSIONS_RETURN(pUsbIns);
890	RT_NOREF(iInstance);
891	PUSBPROXYDEV pThis = PDMINS_2_DATA(pUsbIns, PUSBPROXYDEV);
892	PCPDMUSBHLP pHlp = pUsbIns->pHlpR3;
893
894	LogFlow(("usbProxyConstruct: pUsbIns=%p iInstance=%d\n", pUsbIns, iInstance));
895
896	/*
897	* Initialize the instance data.
898	*/
899	pThis->pUsbIns = pUsbIns;
900	pThis->pUsbIns->pszName = g_szDummyName;
901	pThis->iActiveCfg = -1;
902	pThis->fMaskedIfs = 0;
903	pThis->fOpened = false;
904	pThis->fInited = false;
905
906	/*
907	* Read the basic configuration.
908	*/
909	char szAddress[1024];
910	int rc = pHlp->pfnCFGMQueryString(pCfg, "Address", szAddress, sizeof(szAddress));
911	AssertRCReturn(rc, rc);
912
913	char szBackend[64];
914	rc = pHlp->pfnCFGMQueryString(pCfg, "Backend", szBackend, sizeof(szBackend));
915	AssertRCReturn(rc, rc);
916
917	/*
918	* Select backend and open the device.
919	*/
920	rc = VERR_NOT_FOUND;
921	for (unsigned i = 0; i < RT_ELEMENTS(g_aUsbProxies); i++)
922	{
923	if (!RTStrICmp(szBackend, g_aUsbProxies[i]->pszName))
924	{
925	pThis->pOps = g_aUsbProxies[i];
926	rc = VINF_SUCCESS;
927	break;
928	}
929	}
930	if (RT_FAILURE(rc))
931	return PDMUSB_SET_ERROR(pUsbIns, rc, N_("USBProxy: Failed to find backend"));
932
933	pThis->pvInstanceDataR3 = RTMemAllocZ(pThis->pOps->cbBackend);
934	if (!pThis->pvInstanceDataR3)
935	return PDMUSB_SET_ERROR(pUsbIns, VERR_NO_MEMORY, N_("USBProxy: can't allocate memory for host backend"));
936
937	rc = pThis->pOps->pfnOpen(pThis, szAddress);
938	if (RT_FAILURE(rc))
939	{
940	LogRel(("usbProxyConstruct: Failed to open '%s', rc=%Rrc\n", szAddress, rc));
941	return rc;
942	}
943	pThis->fOpened = true;
944
945	/*
946	* Get the device descriptor and format the device name (for logging).
947	*/
948	if (!usbProxyGetDeviceDesc(pThis, &pThis->DevDesc))
949	{
950	Log(("usbProxyConstruct: usbProxyGetDeviceDesc failed\n"));
951	return VERR_READ_ERROR;
952	}
953
954	RTStrAPrintf(&pUsbIns->pszName, "%p[proxy %04x:%04x]", pThis, pThis->DevDesc.idVendor, pThis->DevDesc.idProduct); /** @todo append the user comment */
955	AssertReturn(pUsbIns->pszName, VERR_NO_MEMORY);
956
957	/*
958	* Get config descriptors.
959	*/
960	size_t cbConfigs = pThis->DevDesc.bNumConfigurations * sizeof(pThis->paCfgDescs[0]);
961	pThis->paCfgDescs = (PVUSBDESCCONFIGEX)RTMemAllocZ(cbConfigs);
962	AssertReturn(pThis->paCfgDescs, VERR_NO_MEMORY);
963
964	unsigned i;
965	for (i = 0; i < pThis->DevDesc.bNumConfigurations; i++)
966	if (!copy_config(pThis, i, (PVUSBDESCCONFIGEX)&pThis->paCfgDescs[i]))
967	break;
968	if (i < pThis->DevDesc.bNumConfigurations)
969	{
970	Log(("usbProxyConstruct: copy_config failed, i=%d\n", i));
971	return VERR_READ_ERROR;
972	}
973
974	/*
975	* Pickup best matching global configuration for this device.
976	* The global configuration is organized like this:
977	*
978	* GlobalConfig/Whatever/
979	* \|- idVendor = 300
980	* \|- idProduct = 300
981	* - Config/
982	*
983	* The first level contains filter attributes which we stuff into a USBFILTER
984	* structure and match against the device info that's available. The highest
985	* ranked match is will be used. If nothing is found, the values will be
986	* queried from the GlobalConfig node (simplifies code and might actually
987	* be useful).
988	*/
989	PCFGMNODE pCfgGlobalDev = pCfgGlobal;
990	PCFGMNODE pCur = pHlp->pfnCFGMGetFirstChild(pCfgGlobal);
991	if (pCur)
992	{
993	/*
994	* Create a device filter from the device configuration
995	* descriptor ++. No strings currently.
996	*/
997	USBFILTER Device;
998	USBFilterInit(&Device, USBFILTERTYPE_CAPTURE);
999	rc = USBFilterSetNumExact(&Device, USBFILTERIDX_VENDOR_ID, pThis->DevDesc.idVendor, true); AssertRC(rc);
1000	rc = USBFilterSetNumExact(&Device, USBFILTERIDX_PRODUCT_ID, pThis->DevDesc.idProduct, true); AssertRC(rc);
1001	rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_REV, pThis->DevDesc.bcdDevice, true); AssertRC(rc);
1002	rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_CLASS, pThis->DevDesc.bDeviceClass, true); AssertRC(rc);
1003	rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_SUB_CLASS, pThis->DevDesc.bDeviceSubClass, true); AssertRC(rc);
1004	rc = USBFilterSetNumExact(&Device, USBFILTERIDX_DEVICE_PROTOCOL, pThis->DevDesc.bDeviceProtocol, true); AssertRC(rc);
1005	/** @todo manufacturer, product and serial strings */
1006
1007	int iBestMatchRate = -1;
1008	PCFGMNODE pBestMatch = NULL;
1009	for (pCur = pHlp->pfnCFGMGetFirstChild(pCfgGlobal); pCur; pCur = pHlp->pfnCFGMGetNextChild(pCur))
1010	{
1011	/*
1012	* Construct a filter from the attributes in the node.
1013	*/
1014	USBFILTER Filter;
1015	USBFilterInit(&Filter, USBFILTERTYPE_CAPTURE);
1016
1017	/* numeric */
1018	if ( RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_VENDOR_ID, pHlp, pCur, "idVendor", "idVendorExpr"))
1019	\|\| RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_PRODUCT_ID, pHlp, pCur, "idProduct", "idProcutExpr"))
1020	\|\| RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_REV, pHlp, pCur, "bcdDevice", "bcdDeviceExpr"))
1021	\|\| RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_CLASS, pHlp, pCur, "bDeviceClass", "bDeviceClassExpr"))
1022	\|\| RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_SUB_CLASS, pHlp, pCur, "bDeviceSubClass", "bDeviceSubClassExpr"))
1023	\|\| RT_FAILURE(usbProxyQueryNum(&Filter, USBFILTERIDX_DEVICE_PROTOCOL, pHlp, pCur, "bDeviceProtocol", "bDeviceProtocolExpr")))
1024	continue; /* skip it */
1025
1026	/* strings */
1027	/** @todo manufacturer, product and serial strings */
1028
1029	/* ignore unknown config values, but not without bitching. */
1030	if (!pHlp->pfnCFGMAreValuesValid(pCur,
1031	"idVendor\0idVendorExpr\0"
1032	"idProduct\0idProductExpr\0"
1033	"bcdDevice\0bcdDeviceExpr\0"
1034	"bDeviceClass\0bDeviceClassExpr\0"
1035	"bDeviceSubClass\0bDeviceSubClassExpr\0"
1036	"bDeviceProtocol\0bDeviceProtocolExpr\0"))
1037	LogRel(("usbProxyConstruct: Unknown value(s) in config filter (ignored)!\n"));
1038
1039	/*
1040	* Try match it and on match see if it has is a higher rate hit
1041	* than the previous match. Quit if its a 100% match.
1042	*/
1043	int iRate = USBFilterMatchRated(&Filter, &Device);
1044	if (iRate > iBestMatchRate)
1045	{
1046	pBestMatch = pCur;
1047	iBestMatchRate = iRate;
1048	if (iRate >= 100)
1049	break;
1050	}
1051	}
1052	if (pBestMatch)
1053	pCfgGlobalDev = pHlp->pfnCFGMGetChild(pBestMatch, "Config");
1054	if (pCfgGlobalDev)
1055	pCfgGlobalDev = pCfgGlobal;
1056	}
1057
1058	/*
1059	* Query the rest of the configuration using the global as fallback.
1060	*/
1061	rc = pHlp->pfnCFGMQueryU32(pCfg, "MaskedIfs", &pThis->fMaskedIfs);
1062	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1063	rc = pHlp->pfnCFGMQueryU32(pCfgGlobalDev, "MaskedIfs", &pThis->fMaskedIfs);
1064	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1065	pThis->fMaskedIfs = 0;
1066	else
1067	AssertRCReturn(rc, rc);
1068
1069	bool fForce11Device;
1070	rc = pHlp->pfnCFGMQueryBool(pCfg, "Force11Device", &fForce11Device);
1071	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1072	rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "Force11Device", &fForce11Device);
1073	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1074	fForce11Device = false;
1075	else
1076	AssertRCReturn(rc, rc);
1077
1078	bool fForce11PacketSize;
1079	rc = pHlp->pfnCFGMQueryBool(pCfg, "Force11PacketSize", &fForce11PacketSize);
1080	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1081	rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "Force11PacketSize", &fForce11PacketSize);
1082	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1083	fForce11PacketSize = false;
1084	else
1085	AssertRCReturn(rc, rc);
1086
1087	bool fEditAudioSyncEp;
1088	rc = pHlp->pfnCFGMQueryBool(pCfg, "EditAudioSyncEp", &fEditAudioSyncEp);
1089	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1090	rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "EditAudioSyncEp", &fEditAudioSyncEp);
1091	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1092	fEditAudioSyncEp = true; /* NB: On by default! */
1093	else
1094	AssertRCReturn(rc, rc);
1095
1096	bool fEditRemoteWake;
1097	rc = pHlp->pfnCFGMQueryBool(pCfg, "EditRemoteWake", &fEditRemoteWake);
1098	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1099	rc = pHlp->pfnCFGMQueryBool(pCfgGlobalDev, "EditRemoteWake", &fEditRemoteWake);
1100	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1101	fEditRemoteWake = true; /* NB: On by default! */
1102	else
1103	AssertRCReturn(rc, rc);
1104
1105	/*
1106	* If we're masking interfaces, edit the descriptors.
1107	*/
1108	bool fEdited = pThis->fMaskedIfs != 0;
1109	if (pThis->fMaskedIfs)
1110	usbProxyDevEditOutMaskedIfs(pThis);
1111
1112	/*
1113	* Do 2.0 -> 1.1 device edits if requested to do so.
1114	*/
1115	if ( fForce11PacketSize
1116	&& pThis->DevDesc.bcdUSB >= 0x0200)
1117	{
1118	PVUSBDESCCONFIGEX paCfgs = pThis->paCfgDescs;
1119	for (unsigned iCfg = 0; iCfg < pThis->DevDesc.bNumConfigurations; iCfg++)
1120	{
1121	PVUSBINTERFACE paIfs = (PVUSBINTERFACE)paCfgs[iCfg].paIfs;
1122	for (unsigned iIf = 0; iIf < paCfgs[iCfg].Core.bNumInterfaces; iIf++)
1123	for (uint32_t iAlt = 0; iAlt < paIfs[iIf].cSettings; iAlt++)
1124	{
1125	/*
1126	* USB 1.1 defines the max for control, interrupt and bulk to be 64 bytes.
1127	* While isochronous has a max of 1023 bytes.
1128	*/
1129	PVUSBDESCENDPOINTEX paEps = (PVUSBDESCENDPOINTEX)paIfs[iIf].paSettings[iAlt].paEndpoints;
1130	if (!paEps)
1131	continue;
1132
1133	for (unsigned iEp = 0; iEp < paIfs[iIf].paSettings[iAlt].Core.bNumEndpoints; iEp++)
1134	{
1135	const uint16_t cbMax = (paEps[iEp].Core.bmAttributes & 3) == 1 /* isoc */
1136	? 1023
1137	: 64;
1138	if (paEps[iEp].Core.wMaxPacketSize > cbMax)
1139	{
1140	Log(("usb-proxy: pProxyDev=%s correcting wMaxPacketSize from %#x to %#x (mainly for vista)\n",
1141	pUsbIns->pszName, paEps[iEp].Core.wMaxPacketSize, cbMax));
1142	paEps[iEp].Core.wMaxPacketSize = cbMax;
1143	fEdited = true;
1144	}
1145	}
1146	}
1147	}
1148	}
1149
1150	if ( fForce11Device
1151	&& pThis->DevDesc.bcdUSB == 0x0200)
1152	{
1153	/*
1154	* Discourages windows from helping you find a 2.0 port.
1155	*/
1156	Log(("usb-proxy: %s correcting USB version 2.0 to 1.1 (to avoid Windows warning)\n", pUsbIns->pszName));
1157	pThis->DevDesc.bcdUSB = 0x110;
1158	fEdited = true;
1159	}
1160
1161
1162	/*
1163	* Turn asynchronous audio endpoints into synchronous ones, see @bugref{8769}
1164	*/
1165	if (fEditAudioSyncEp)
1166	{
1167	PVUSBDESCCONFIGEX paCfgs = pThis->paCfgDescs;
1168	for (unsigned iCfg = 0; iCfg < pThis->DevDesc.bNumConfigurations; iCfg++)
1169	{
1170	PVUSBINTERFACE paIfs = (PVUSBINTERFACE)paCfgs[iCfg].paIfs;
1171	for (unsigned iIf = 0; iIf < paCfgs[iCfg].Core.bNumInterfaces; iIf++)
1172	for (uint32_t iAlt = 0; iAlt < paIfs[iIf].cSettings; iAlt++)
1173	{
1174	/* If not an audio class interface, skip. */
1175	if (paIfs[iIf].paSettings[iAlt].Core.bInterfaceClass != 1)
1176	continue;
1177
1178	/* If not a streaming interface, skip. */
1179	if (paIfs[iIf].paSettings[iAlt].Core.bInterfaceSubClass != 2)
1180	continue;
1181
1182	PVUSBDESCENDPOINTEX paEps = (PVUSBDESCENDPOINTEX)paIfs[iIf].paSettings[iAlt].paEndpoints;
1183	if (!paEps)
1184	continue;
1185
1186	for (unsigned iEp = 0; iEp < paIfs[iIf].paSettings[iAlt].Core.bNumEndpoints; iEp++)
1187	{
1188	/* isoch/asynch/data*/
1189	if ((paEps[iEp].Core.bmAttributes == 5) && (paEps[iEp].Core.bLength == 9))
1190	{
1191	uint8_t pbExtra = (uint8_t )paEps[iEp].pvMore; /* unconst*/
1192	if (pbExtra[1] == 0)
1193	continue; /* If bSynchAddress is zero, leave the descriptor alone. */
1194
1195	Log(("usb-proxy: pProxyDev=%s async audio with bmAttr=%02X [%02X, %02X] on EP %02X\n",
1196	pUsbIns->pszName, paEps[iEp].Core.bmAttributes, pbExtra[0], pbExtra[1], paEps[iEp].Core.bEndpointAddress));
1197	paEps[iEp].Core.bmAttributes = 0xD; /* isoch/synch/data*/
1198	pbExtra[1] = 0; /* Clear bSynchAddress. */
1199	fEdited = true;
1200	LogRel(("VUSB: Modified '%s' async audio endpoint 0x%02x\n", pUsbIns->pszName, paEps[iEp].Core.bEndpointAddress));
1201	}
1202	}
1203	}
1204	}
1205	}
1206
1207	/*
1208	* Disable remote wakeup capability, see @bugref{9839}. This is done on
1209	* a device/configuration level, no need to dig too deep through the descriptors.
1210	* On most backends, we can't perform a real selective suspend, and more importantly
1211	* can't receive a remote wake notification. If a guest suspends the device and waits
1212	* for a remote wake, the device is effectively dead.
1213	*/
1214	if (fEditRemoteWake)
1215	{
1216	PVUSBDESCCONFIGEX paCfgs = pThis->paCfgDescs;
1217	for (unsigned iCfg = 0; iCfg < pThis->DevDesc.bNumConfigurations; iCfg++)
1218	{
1219	Log(("usb-proxy: pProxyDev=%s configuration %d with bmAttr=%02X\n",
1220	pUsbIns->pszName, paCfgs[iCfg].Core.bmAttributes, iCfg));
1221	if (paCfgs[iCfg].Core.bmAttributes & RT_BIT(5))
1222	{
1223	paCfgs[iCfg].Core.bmAttributes = paCfgs[iCfg].Core.bmAttributes & ~RT_BIT(5); /* Remote wakeup. */
1224	fEdited = true;
1225	LogRel(("VUSB: Disabled '%s' remote wakeup for configuration %d\n", pUsbIns->pszName, iCfg));
1226	}
1227	}
1228	}
1229
1230	/*
1231	* Init the PDM/VUSB descriptor cache.
1232	*/
1233	pThis->DescCache.pDevice = &pThis->DevDesc;
1234	pThis->DescCache.paConfigs = pThis->paCfgDescs;
1235	pThis->DescCache.paLanguages = NULL;
1236	pThis->DescCache.cLanguages = 0;
1237	pThis->DescCache.fUseCachedDescriptors = fEdited;
1238	pThis->DescCache.fUseCachedStringsDescriptors = false;
1239
1240	/*
1241	* Call the backend if it wishes to do some more initializing
1242	* after we've read the config and descriptors.
1243	*/
1244	if (pThis->pOps->pfnInit)
1245	{
1246	rc = pThis->pOps->pfnInit(pThis);
1247	if (RT_FAILURE(rc))
1248	return rc;
1249	}
1250	pThis->fInited = true;
1251
1252	/*
1253	* We're good!
1254	*/
1255	Log(("usb-proxy: created pProxyDev=%s address '%s' fMaskedIfs=%#x (rc=%Rrc)\n",
1256	pUsbIns->pszName, szAddress, pThis->fMaskedIfs, rc));
1257	return VINF_SUCCESS;
1258	}
1259
1260
1261	/**
1262	* The USB proxy device registration record.
1263	*/
1264	const PDMUSBREG g_UsbDevProxy =
1265	{
1266	/* u32Version */
1267	PDM_USBREG_VERSION,
1268	/* szName */
1269	"USBProxy",
1270	/* pszDescription */
1271	"USB Proxy Device.",
1272	/* fFlags */
1273	0,
1274	/* cMaxInstances */
1275	~0U,
1276	/* cbInstance */
1277	sizeof(USBPROXYDEV),
1278	/* pfnConstruct */
1279	usbProxyConstruct,
1280	/* pfnDestruct */
1281	usbProxyDestruct,
1282	/* pfnVMInitComplete */
1283	NULL,
1284	/* pfnVMPowerOn */
1285	NULL,
1286	/* pfnVMReset */
1287	NULL,
1288	/* pfnVMSuspend */
1289	NULL,
1290	/* pfnVMResume */
1291	NULL,
1292	/* pfnVMPowerOff */
1293	NULL,
1294	/* pfnHotPlugged */
1295	NULL,
1296	/* pfnHotUnplugged */
1297	NULL,
1298	/* pfnDriverAttach */
1299	NULL,
1300	/* pfnDriverDetach */
1301	NULL,
1302	/* pfnQueryInterface */
1303	NULL,
1304	/* pfnUsbReset */
1305	usbProxyDevReset,
1306	/* pfnUsbGetDescriptorCache */
1307	usbProxyDevGetDescriptorCache,
1308	/* pfnUsbSetConfiguration */
1309	usbProxyDevSetConfiguration,
1310	/* pfnUsbSetInterface */
1311	usbProxyDevSetInterface,
1312	/* pfnUsbClearHaltedEndpoint */
1313	usbProxyDevClearHaltedEndpoint,
1314	/* pfnUrbNew */
1315	NULL,
1316	/* pfnUrbQueue */
1317	usbProxyDevUrbQueue,
1318	/* pfnUrbCancel */
1319	usbProxyDevUrbCancel,
1320	/* pfnUrbReap */
1321	usbProxyDevUrbReap,
1322	/* pfnWakeup */
1323	usbProxyDevWakeup,
1324
1325	/* u32TheEnd */
1326	PDM_USBREG_VERSION
1327	};
1328

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source: vbox/trunk/src/VBox/Devices/USB/USBProxyDevice.cpp@ 100039

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