VUSBDevice.cpp@ 97046

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1	/* $Id: VUSBDevice.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* Virtual USB - Device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 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_VUSB
33	#include <VBox/vmm/pdm.h>
34	#include <VBox/vmm/vmapi.h>
35	#include <VBox/err.h>
36	#include <VBox/log.h>
37	#include <iprt/alloc.h>
38	#include <iprt/time.h>
39	#include <iprt/thread.h>
40	#include <iprt/semaphore.h>
41	#include <iprt/string.h>
42	#include <iprt/assert.h>
43	#include <iprt/asm.h>
44	#include "VUSBInternal.h"
45
46	#include "VUSBSniffer.h"
47
48
49	/*********************************************************************************************************************************
50	* Structures and Typedefs *
51	*********************************************************************************************************************************/
52	/**
53	* Argument package of vusbDevResetThread().
54	*/
55	typedef struct vusb_reset_args
56	{
57	/** Pointer to the device which is being reset. */
58	PVUSBDEV pDev;
59	/** The reset return code. */
60	int rc;
61	/** Pointer to the completion callback. */
62	PFNVUSBRESETDONE pfnDone;
63	/** User argument to pfnDone. */
64	void *pvUser;
65	} VUSBRESETARGS, *PVUSBRESETARGS;
66
67
68	/*********************************************************************************************************************************
69	* Global Variables *
70	*********************************************************************************************************************************/
71	/** Default message pipe. */
72	const VUSBDESCENDPOINTEX g_Endpoint0 =
73	{
74	{
75	/* .bLength = */ VUSB_DT_ENDPOINT_MIN_LEN,
76	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
77	/* .bEndpointAddress = */ 0,
78	/* .bmAttributes = */ 0,
79	/* .wMaxPacketSize = */ 64,
80	/* .bInterval = */ 0
81	},
82	NULL
83	};
84
85	/** Default configuration. */
86	const VUSBDESCCONFIGEX g_Config0 =
87	{
88	{
89	/* .bLength = */ VUSB_DT_CONFIG_MIN_LEN,
90	/* .bDescriptorType = */ VUSB_DT_CONFIG,
91	/* .WTotalLength = / 0, / (auto-calculated) */
92	/* .bNumInterfaces = */ 0,
93	/* .bConfigurationValue =*/ 0,
94	/* .iConfiguration = */ 0,
95	/* .bmAttributes = */ 0x80,
96	/* .MaxPower = */ 14
97	},
98	NULL,
99	NULL
100	};
101
102
103
104	static PCVUSBDESCCONFIGEX vusbDevFindCfgDesc(PVUSBDEV pDev, int iCfg)
105	{
106	if (iCfg == 0)
107	return &g_Config0;
108
109	for (unsigned i = 0; i < pDev->pDescCache->pDevice->bNumConfigurations; i++)
110	if (pDev->pDescCache->paConfigs[i].Core.bConfigurationValue == iCfg)
111	return &pDev->pDescCache->paConfigs[i];
112	return NULL;
113	}
114
115	static PVUSBINTERFACESTATE vusbDevFindIfState(PVUSBDEV pDev, int iIf)
116	{
117	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
118	if (pDev->paIfStates[i].pIf->paSettings[0].Core.bInterfaceNumber == iIf)
119	return &pDev->paIfStates[i];
120	return NULL;
121	}
122
123	static PCVUSBDESCINTERFACEEX vusbDevFindAltIfDesc(PCVUSBINTERFACESTATE pIfState, int iAlt)
124	{
125	for (uint32_t i = 0; i < pIfState->pIf->cSettings; i++)
126	if (pIfState->pIf->paSettings[i].Core.bAlternateSetting == iAlt)
127	return &pIfState->pIf->paSettings[i];
128	return NULL;
129	}
130
131	void vusbDevMapEndpoint(PVUSBDEV pDev, PCVUSBDESCENDPOINTEX pEndPtDesc)
132	{
133	uint8_t i8Addr = pEndPtDesc->Core.bEndpointAddress & 0xF;
134	PVUSBPIPE pPipe = &pDev->aPipes[i8Addr];
135	LogFlow(("vusbDevMapEndpoint: pDev=%p[%s] pEndPtDesc=%p{.bEndpointAddress=%#x, .bmAttributes=%#x} p=%p stage %s->SETUP\n",
136	pDev, pDev->pUsbIns->pszName, pEndPtDesc, pEndPtDesc->Core.bEndpointAddress, pEndPtDesc->Core.bmAttributes,
137	pPipe, g_apszCtlStates[pPipe->pCtrl ? pPipe->pCtrl->enmStage : 3]));
138
139	if ((pEndPtDesc->Core.bmAttributes & 0x3) == 0)
140	{
141	Log(("vusb: map message pipe on address %u\n", i8Addr));
142	pPipe->in = pEndPtDesc;
143	pPipe->out = pEndPtDesc;
144	}
145	else if (pEndPtDesc->Core.bEndpointAddress & 0x80)
146	{
147	Log(("vusb: map input pipe on address %u\n", i8Addr));
148	pPipe->in = pEndPtDesc;
149	}
150	else
151	{
152	Log(("vusb: map output pipe on address %u\n", i8Addr));
153	pPipe->out = pEndPtDesc;
154	}
155
156	if (pPipe->pCtrl)
157	{
158	vusbMsgFreeExtraData(pPipe->pCtrl);
159	pPipe->pCtrl = NULL;
160	}
161	}
162
163	static void unmap_endpoint(PVUSBDEV pDev, PCVUSBDESCENDPOINTEX pEndPtDesc)
164	{
165	uint8_t EndPt = pEndPtDesc->Core.bEndpointAddress & 0xF;
166	PVUSBPIPE pPipe = &pDev->aPipes[EndPt];
167	LogFlow(("unmap_endpoint: pDev=%p[%s] pEndPtDesc=%p{.bEndpointAddress=%#x, .bmAttributes=%#x} p=%p stage %s->SETUP\n",
168	pDev, pDev->pUsbIns->pszName, pEndPtDesc, pEndPtDesc->Core.bEndpointAddress, pEndPtDesc->Core.bmAttributes,
169	pPipe, g_apszCtlStates[pPipe->pCtrl ? pPipe->pCtrl->enmStage : 3]));
170
171	if ((pEndPtDesc->Core.bmAttributes & 0x3) == 0)
172	{
173	Log(("vusb: unmap MSG pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
174	pPipe->in = NULL;
175	pPipe->out = NULL;
176	}
177	else if (pEndPtDesc->Core.bEndpointAddress & 0x80)
178	{
179	Log(("vusb: unmap IN pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
180	pPipe->in = NULL;
181	}
182	else
183	{
184	Log(("vusb: unmap OUT pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
185	pPipe->out = NULL;
186	}
187
188	if (pPipe->pCtrl)
189	{
190	vusbMsgFreeExtraData(pPipe->pCtrl);
191	pPipe->pCtrl = NULL;
192	}
193	}
194
195	static void map_interface(PVUSBDEV pDev, PCVUSBDESCINTERFACEEX pIfDesc)
196	{
197	LogFlow(("map_interface: pDev=%p[%s] pIfDesc=%p:{.iInterface=%d, .bAlternateSetting=%d}\n",
198	pDev, pDev->pUsbIns->pszName, pIfDesc, pIfDesc->Core.iInterface, pIfDesc->Core.bAlternateSetting));
199
200	for (unsigned i = 0; i < pIfDesc->Core.bNumEndpoints; i++)
201	{
202	if ((pIfDesc->paEndpoints[i].Core.bEndpointAddress & 0xF) == VUSB_PIPE_DEFAULT)
203	Log(("vusb: Endpoint 0x%x on interface %u.%u tried to override the default message pipe!!!\n",
204	pIfDesc->paEndpoints[i].Core.bEndpointAddress, pIfDesc->Core.bInterfaceNumber, pIfDesc->Core.bAlternateSetting));
205	else
206	vusbDevMapEndpoint(pDev, &pIfDesc->paEndpoints[i]);
207	}
208	}
209
210
211	/**
212	* Worker that resets the pipe data on select config and detach.
213	*
214	* This leaves the critical section unmolested
215	*
216	* @param pPipe The pipe which data should be reset.
217	*/
218	static void vusbDevResetPipeData(PVUSBPIPE pPipe)
219	{
220	vusbMsgFreeExtraData(pPipe->pCtrl);
221	pPipe->pCtrl = NULL;
222
223	RT_ZERO(pPipe->in);
224	RT_ZERO(pPipe->out);
225	pPipe->async = 0;
226	}
227
228
229	bool vusbDevDoSelectConfig(PVUSBDEV pDev, PCVUSBDESCCONFIGEX pCfgDesc)
230	{
231	LogFlow(("vusbDevDoSelectConfig: pDev=%p[%s] pCfgDesc=%p:{.iConfiguration=%d}\n",
232	pDev, pDev->pUsbIns->pszName, pCfgDesc, pCfgDesc->Core.iConfiguration));
233
234	/*
235	* Clean up all pipes and interfaces.
236	*/
237	unsigned i;
238	for (i = 0; i < VUSB_PIPE_MAX; i++)
239	if (i != VUSB_PIPE_DEFAULT)
240	vusbDevResetPipeData(&pDev->aPipes[i]);
241	memset(pDev->paIfStates, 0, pCfgDesc->Core.bNumInterfaces * sizeof(pDev->paIfStates[0]));
242
243	/*
244	* Map in the default setting for every interface.
245	*/
246	for (i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
247	{
248	PCVUSBINTERFACE pIf;
249	struct vusb_interface_state *pIfState;
250
251	pIf = &pCfgDesc->paIfs[i];
252	pIfState = &pDev->paIfStates[i];
253	pIfState->pIf = pIf;
254
255	/*
256	* Find the 0 setting, if it is not present we just use
257	* the lowest numbered one.
258	*/
259	for (uint32_t j = 0; j < pIf->cSettings; j++)
260	{
261	if ( !pIfState->pCurIfDesc
262	\|\| pIf->paSettings[j].Core.bAlternateSetting < pIfState->pCurIfDesc->Core.bAlternateSetting)
263	pIfState->pCurIfDesc = &pIf->paSettings[j];
264	if (pIfState->pCurIfDesc->Core.bAlternateSetting == 0)
265	break;
266	}
267
268	if (pIfState->pCurIfDesc)
269	map_interface(pDev, pIfState->pCurIfDesc);
270	}
271
272	pDev->pCurCfgDesc = pCfgDesc;
273
274	if (pCfgDesc->Core.bmAttributes & 0x40)
275	pDev->u16Status \|= (1 << VUSB_DEV_SELF_POWERED);
276	else
277	pDev->u16Status &= ~(1 << VUSB_DEV_SELF_POWERED);
278
279	return true;
280	}
281
282	/**
283	* Standard device request: SET_CONFIGURATION
284	* @returns success indicator.
285	*/
286	static bool vusbDevStdReqSetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
287	{
288	RT_NOREF(EndPt, pbBuf, pcbBuf);
289	unsigned iCfg = pSetup->wValue & 0xff;
290
291	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
292	{
293	Log(("vusb: error: %s: SET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
294	return false;
295	}
296
297	/*
298	* Check that the device is in a valid state.
299	* (The caller has already checked that it's not being reset.)
300	*/
301	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
302	if (enmState == VUSB_DEVICE_STATE_DEFAULT)
303	{
304	LogFlow(("vusbDevStdReqSetConfig: %s: default dev state !!?\n", pDev->pUsbIns->pszName));
305	return false;
306	}
307
308	PCVUSBDESCCONFIGEX pNewCfgDesc = vusbDevFindCfgDesc(pDev, iCfg);
309	if (!pNewCfgDesc)
310	{
311	Log(("vusb: error: %s: config %i not found !!!\n", pDev->pUsbIns->pszName, iCfg));
312	return false;
313	}
314
315	if (iCfg == 0)
316	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
317	else
318	vusbDevSetState(pDev, VUSB_DEVICE_STATE_CONFIGURED);
319	if (pDev->pUsbIns->pReg->pfnUsbSetConfiguration)
320	{
321	RTCritSectEnter(&pDev->pHub->CritSectDevices);
322	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetConfiguration, 5,
323	pDev->pUsbIns, pNewCfgDesc->Core.bConfigurationValue,
324	pDev->pCurCfgDesc, pDev->paIfStates, pNewCfgDesc);
325	RTCritSectLeave(&pDev->pHub->CritSectDevices);
326	if (RT_FAILURE(rc))
327	{
328	Log(("vusb: error: %s: failed to set config %i (%Rrc) !!!\n", pDev->pUsbIns->pszName, iCfg, rc));
329	return false;
330	}
331	}
332	Log(("vusb: %p[%s]: SET_CONFIGURATION: Selected config %u\n", pDev, pDev->pUsbIns->pszName, iCfg));
333	return vusbDevDoSelectConfig(pDev, pNewCfgDesc);
334	}
335
336
337	/**
338	* Standard device request: GET_CONFIGURATION
339	* @returns success indicator.
340	*/
341	static bool vusbDevStdReqGetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
342	{
343	RT_NOREF(EndPt);
344	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
345	{
346	Log(("vusb: error: %s: GET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
347	return false;
348	}
349
350	/*
351	* Check that the device is in a valid state.
352	* (The caller has already checked that it's not being reset.)
353	*/
354	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
355	if ( enmState != VUSB_DEVICE_STATE_CONFIGURED
356	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
357	{
358	LogFlow(("vusbDevStdReqGetConfig: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
359	return false;
360	}
361
362	if (*pcbBuf < 1)
363	{
364	LogFlow(("vusbDevStdReqGetConfig: %s: no space for data!\n", pDev->pUsbIns->pszName));
365	return true;
366	}
367
368	uint8_t iCfg;
369	if (enmState == VUSB_DEVICE_STATE_ADDRESS)
370	iCfg = 0;
371	else
372	iCfg = pDev->pCurCfgDesc->Core.bConfigurationValue;
373
374	*pbBuf = iCfg;
375	*pcbBuf = 1;
376	LogFlow(("vusbDevStdReqGetConfig: %s: returns iCfg=%d\n", pDev->pUsbIns->pszName, iCfg));
377	return true;
378	}
379
380	/**
381	* Standard device request: GET_INTERFACE
382	* @returns success indicator.
383	*/
384	static bool vusbDevStdReqGetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
385	{
386	RT_NOREF(EndPt);
387	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
388	{
389	Log(("vusb: error: %s: GET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
390	return false;
391	}
392
393	/*
394	* Check that the device is in a valid state.
395	* (The caller has already checked that it's not being reset.)
396	*/
397	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
398	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
399	{
400	LogFlow(("vusbDevStdReqGetInterface: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
401	return false;
402	}
403
404	if (*pcbBuf < 1)
405	{
406	LogFlow(("vusbDevStdReqGetInterface: %s: no space for data!\n", pDev->pUsbIns->pszName));
407	return true;
408	}
409
410	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
411	{
412	PCVUSBDESCINTERFACEEX pIfDesc = pDev->paIfStates[i].pCurIfDesc;
413	if ( pIfDesc
414	&& pSetup->wIndex == pIfDesc->Core.bInterfaceNumber)
415	{
416	*pbBuf = pIfDesc->Core.bAlternateSetting;
417	*pcbBuf = 1;
418	Log(("vusb: %s: GET_INTERFACE: %u.%u\n", pDev->pUsbIns->pszName, pIfDesc->Core.bInterfaceNumber, *pbBuf));
419	return true;
420	}
421	}
422
423	Log(("vusb: error: %s: GET_INTERFACE - unknown iface %u !!!\n", pDev->pUsbIns->pszName, pSetup->wIndex));
424	return false;
425	}
426
427	/**
428	* Standard device request: SET_INTERFACE
429	* @returns success indicator.
430	*/
431	static bool vusbDevStdReqSetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
432	{
433	RT_NOREF(EndPt, pbBuf, pcbBuf);
434	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
435	{
436	Log(("vusb: error: %s: SET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
437	return false;
438	}
439
440	/*
441	* Check that the device is in a valid state.
442	* (The caller has already checked that it's not being reset.)
443	*/
444	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
445	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
446	{
447	LogFlow(("vusbDevStdReqSetInterface: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
448	return false;
449	}
450
451	/*
452	* Find the interface.
453	*/
454	uint8_t iIf = pSetup->wIndex;
455	PVUSBINTERFACESTATE pIfState = vusbDevFindIfState(pDev, iIf);
456	if (!pIfState)
457	{
458	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find interface %u !!!\n", pDev->pUsbIns->pszName, iIf));
459	return false;
460	}
461	uint8_t iAlt = pSetup->wValue;
462	PCVUSBDESCINTERFACEEX pIfDesc = vusbDevFindAltIfDesc(pIfState, iAlt);
463	if (!pIfDesc)
464	{
465	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u !!!\n", pDev->pUsbIns->pszName, iIf, iAlt));
466	return false;
467	}
468
469	if (pDev->pUsbIns->pReg->pfnUsbSetInterface)
470	{
471	RTCritSectEnter(&pDev->pHub->CritSectDevices);
472	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetInterface, 3, pDev->pUsbIns, iIf, iAlt);
473	RTCritSectLeave(&pDev->pHub->CritSectDevices);
474	if (RT_FAILURE(rc))
475	{
476	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u (%Rrc)\n", pDev->pUsbIns->pszName, iIf, iAlt, rc));
477	return false;
478	}
479	}
480
481	for (unsigned i = 0; i < pIfState->pCurIfDesc->Core.bNumEndpoints; i++)
482	unmap_endpoint(pDev, &pIfState->pCurIfDesc->paEndpoints[i]);
483
484	Log(("vusb: SET_INTERFACE: Selected %u.%u\n", iIf, iAlt));
485
486	map_interface(pDev, pIfDesc);
487	pIfState->pCurIfDesc = pIfDesc;
488
489	return true;
490	}
491
492	/**
493	* Standard device request: SET_ADDRESS
494	* @returns success indicator.
495	*/
496	static bool vusbDevStdReqSetAddress(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
497	{
498	RT_NOREF(EndPt, pbBuf, pcbBuf);
499	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
500	{
501	Log(("vusb: error: %s: SET_ADDRESS - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
502	return false;
503	}
504
505	/*
506	* Check that the device is in a valid state.
507	* (The caller has already checked that it's not being reset.)
508	*/
509	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
510	if ( enmState != VUSB_DEVICE_STATE_DEFAULT
511	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
512	{
513	LogFlow(("vusbDevStdReqSetAddress: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
514	return false;
515	}
516
517	pDev->u8NewAddress = pSetup->wValue;
518	return true;
519	}
520
521	/**
522	* Standard device request: CLEAR_FEATURE
523	* @returns success indicator.
524	*
525	* @remark This is only called for VUSB_TO_ENDPOINT && ep == 0 && wValue == ENDPOINT_HALT.
526	* All other cases of CLEAR_FEATURE is handled in the normal async/sync manner.
527	*/
528	static bool vusbDevStdReqClearFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
529	{
530	RT_NOREF(pbBuf, pcbBuf);
531	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
532	{
533	case VUSB_TO_DEVICE:
534	Log(("vusb: ClearFeature: dev(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
535	break;
536	case VUSB_TO_INTERFACE:
537	Log(("vusb: ClearFeature: iface(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
538	break;
539	case VUSB_TO_ENDPOINT:
540	Log(("vusb: ClearFeature: ep(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
541	if ( !EndPt /* Default control pipe only */
542	&& pSetup->wValue == 0 /* ENDPOINT_HALT */
543	&& pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint)
544	{
545	RTCritSectEnter(&pDev->pHub->CritSectDevices);
546	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint,
547	2, pDev->pUsbIns, pSetup->wIndex);
548	RTCritSectLeave(&pDev->pHub->CritSectDevices);
549	return RT_SUCCESS(rc);
550	}
551	break;
552	default:
553	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
554	break;
555	}
556
557	AssertMsgFailed(("Invalid safe check !!!\n"));
558	return false;
559	}
560
561	/**
562	* Standard device request: SET_FEATURE
563	* @returns success indicator.
564	*/
565	static bool vusbDevStdReqSetFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
566	{
567	RT_NOREF(pDev, EndPt, pbBuf, pcbBuf);
568	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
569	{
570	case VUSB_TO_DEVICE:
571	Log(("vusb: SetFeature: dev(%u): selector=%u\n",
572	pSetup->wIndex, pSetup->wValue));
573	break;
574	case VUSB_TO_INTERFACE:
575	Log(("vusb: SetFeature: if(%u): selector=%u\n",
576	pSetup->wIndex, pSetup->wValue));
577	break;
578	case VUSB_TO_ENDPOINT:
579	Log(("vusb: SetFeature: ep(%u): selector=%u\n",
580	pSetup->wIndex, pSetup->wValue));
581	break;
582	default:
583	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
584	return false;
585	}
586	AssertMsgFailed(("This stuff is bogus\n"));
587	return false;
588	}
589
590	static bool vusbDevStdReqGetStatus(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
591	{
592	RT_NOREF(EndPt);
593	if (*pcbBuf != 2)
594	{
595	LogFlow(("vusbDevStdReqGetStatus: %s: buffer is too small! (%d)\n", pDev->pUsbIns->pszName, *pcbBuf));
596	return false;
597	}
598
599	uint16_t u16Status;
600	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
601	{
602	case VUSB_TO_DEVICE:
603	u16Status = pDev->u16Status;
604	LogFlow(("vusbDevStdReqGetStatus: %s: device status %#x (%d)\n", pDev->pUsbIns->pszName, u16Status, u16Status));
605	break;
606	case VUSB_TO_INTERFACE:
607	u16Status = 0;
608	LogFlow(("vusbDevStdReqGetStatus: %s: bogus interface status request!!\n", pDev->pUsbIns->pszName));
609	break;
610	case VUSB_TO_ENDPOINT:
611	u16Status = 0;
612	LogFlow(("vusbDevStdReqGetStatus: %s: bogus endpoint status request!!\n", pDev->pUsbIns->pszName));
613	break;
614	default:
615	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
616	return false;
617	}
618
619	(uint16_t )pbBuf = u16Status;
620	return true;
621	}
622
623
624	/**
625	* Finds a cached string.
626	*
627	* @returns Pointer to the cached string if found. NULL if not.
628	* @param paLanguages The languages to search.
629	* @param cLanguages The number of languages in the table.
630	* @param idLang The language ID.
631	* @param iString The string index.
632	*/
633	static PCPDMUSBDESCCACHESTRING FindCachedString(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
634	uint16_t idLang, uint8_t iString)
635	{
636	/** @todo binary lookups! */
637	unsigned iCurLang = cLanguages;
638	while (iCurLang-- > 0)
639	if (paLanguages[iCurLang].idLang == idLang)
640	{
641	PCPDMUSBDESCCACHESTRING paStrings = paLanguages[iCurLang].paStrings;
642	unsigned iCurStr = paLanguages[iCurLang].cStrings;
643	while (iCurStr-- > 0)
644	if (paStrings[iCurStr].idx == iString)
645	return &paStrings[iCurStr];
646	break;
647	}
648	return NULL;
649	}
650
651
652	/** Macro for copying descriptor data. */
653	#define COPY_DATA(pbDst, cbLeft, pvSrc, cbSrc) \
654	do { \
655	uint32_t cbSrc_ = cbSrc; \
656	uint32_t cbCopy = RT_MIN(cbLeft, cbSrc_); \
657	if (cbCopy) \
658	memcpy(pbBuf, pvSrc, cbCopy); \
659	cbLeft -= cbCopy; \
660	if (!cbLeft) \
661	return; \
662	pbBuf += cbCopy; \
663	} while (0)
664
665	/**
666	* Internal function for reading the language IDs.
667	*/
668	static void ReadCachedStringDesc(PCPDMUSBDESCCACHESTRING pString, uint8_t pbBuf, uint32_t pcbBuf)
669	{
670	uint32_t cbLeft = *pcbBuf;
671
672	RTUTF16 wsz[128]; /* 128-1 => bLength=0xff */
673	PRTUTF16 pwsz = wsz;
674	size_t cwc;
675	int rc = RTStrToUtf16Ex(pString->psz, RT_ELEMENTS(wsz) - 1, &pwsz, RT_ELEMENTS(wsz), &cwc);
676	if (RT_FAILURE(rc))
677	{
678	AssertRC(rc);
679	wsz[0] = 'e';
680	wsz[1] = 'r';
681	wsz[2] = 'r';
682	cwc = 3;
683	}
684
685	VUSBDESCSTRING StringDesc;
686	StringDesc.bLength = (uint8_t)(sizeof(StringDesc) + cwc * sizeof(RTUTF16));
687	StringDesc.bDescriptorType = VUSB_DT_STRING;
688	COPY_DATA(pbBuf, cbLeft, &StringDesc, sizeof(StringDesc));
689	COPY_DATA(pbBuf, cbLeft, wsz, (uint32_t)cwc * sizeof(RTUTF16));
690
691	/* updated the size of the output buffer. */
692	*pcbBuf -= cbLeft;
693	}
694
695
696	/**
697	* Internal function for reading the language IDs.
698	*/
699	static void ReadCachedLangIdDesc(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
700	uint8_t pbBuf, uint32_t pcbBuf)
701	{
702	uint32_t cbLeft = *pcbBuf;
703
704	VUSBDESCLANGID LangIdDesc;
705	size_t cbDesc = sizeof(LangIdDesc) + cLanguages * sizeof(paLanguages[0].idLang);
706	LangIdDesc.bLength = (uint8_t)RT_MIN(0xff, cbDesc);
707	LangIdDesc.bDescriptorType = VUSB_DT_STRING;
708	COPY_DATA(pbBuf, cbLeft, &LangIdDesc, sizeof(LangIdDesc));
709
710	unsigned iLanguage = cLanguages;
711	while (iLanguage-- > 0)
712	COPY_DATA(pbBuf, cbLeft, &paLanguages[iLanguage].idLang, sizeof(paLanguages[iLanguage].idLang));
713
714	/* updated the size of the output buffer. */
715	*pcbBuf -= cbLeft;
716	}
717
718
719	/**
720	* Internal function which performs a descriptor read on the cached descriptors.
721	*/
722	static void ReadCachedConfigDesc(PCVUSBDESCCONFIGEX pCfgDesc, uint8_t pbBuf, uint32_t pcbBuf)
723	{
724	uint32_t cbLeft = *pcbBuf;
725
726	/*
727	* Make a copy of the config descriptor and calculate the wTotalLength field.
728	*/
729	VUSBDESCCONFIG CfgDesc;
730	memcpy(&CfgDesc, pCfgDesc, VUSB_DT_CONFIG_MIN_LEN);
731	uint32_t cbTotal = 0;
732	cbTotal += pCfgDesc->Core.bLength;
733	cbTotal += pCfgDesc->cbClass;
734	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
735	{
736	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
737	for (uint32_t j = 0; j < pIf->cSettings; j++)
738	{
739	cbTotal += pIf->paSettings[j].cbIAD;
740	cbTotal += pIf->paSettings[j].Core.bLength;
741	cbTotal += pIf->paSettings[j].cbClass;
742	for (unsigned k = 0; k < pIf->paSettings[j].Core.bNumEndpoints; k++)
743	{
744	cbTotal += pIf->paSettings[j].paEndpoints[k].Core.bLength;
745	cbTotal += pIf->paSettings[j].paEndpoints[k].cbSsepc;
746	cbTotal += pIf->paSettings[j].paEndpoints[k].cbClass;
747	}
748	}
749	}
750	CfgDesc.wTotalLength = RT_H2LE_U16(cbTotal);
751
752	/*
753	* Copy the config descriptor
754	*/
755	COPY_DATA(pbBuf, cbLeft, &CfgDesc, VUSB_DT_CONFIG_MIN_LEN);
756	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvMore, pCfgDesc->Core.bLength - VUSB_DT_CONFIG_MIN_LEN);
757	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvClass, pCfgDesc->cbClass);
758
759	/*
760	* Copy out all the interfaces for this configuration
761	*/
762	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
763	{
764	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
765	for (uint32_t j = 0; j < pIf->cSettings; j++)
766	{
767	PCVUSBDESCINTERFACEEX pIfDesc = &pIf->paSettings[j];
768
769	COPY_DATA(pbBuf, cbLeft, pIfDesc->pIAD, pIfDesc->cbIAD);
770	COPY_DATA(pbBuf, cbLeft, pIfDesc, VUSB_DT_INTERFACE_MIN_LEN);
771	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvMore, pIfDesc->Core.bLength - VUSB_DT_INTERFACE_MIN_LEN);
772	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvClass, pIfDesc->cbClass);
773
774	/*
775	* Copy out all the endpoints for this interface
776	*/
777	for (unsigned k = 0; k < pIfDesc->Core.bNumEndpoints; k++)
778	{
779	VUSBDESCENDPOINT EndPtDesc;
780	memcpy(&EndPtDesc, &pIfDesc->paEndpoints[k], VUSB_DT_ENDPOINT_MIN_LEN);
781	EndPtDesc.wMaxPacketSize = RT_H2LE_U16(EndPtDesc.wMaxPacketSize);
782
783	COPY_DATA(pbBuf, cbLeft, &EndPtDesc, VUSB_DT_ENDPOINT_MIN_LEN);
784	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvMore, EndPtDesc.bLength - VUSB_DT_ENDPOINT_MIN_LEN);
785	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvSsepc, pIfDesc->paEndpoints[k].cbSsepc);
786	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvClass, pIfDesc->paEndpoints[k].cbClass);
787	}
788	}
789	}
790
791	/* updated the size of the output buffer. */
792	*pcbBuf -= cbLeft;
793	}
794
795	/**
796	* Internal function which performs a descriptor read on the cached descriptors.
797	*/
798	static void ReadCachedDeviceDesc(PCVUSBDESCDEVICE pDevDesc, uint8_t pbBuf, uint32_t pcbBuf)
799	{
800	uint32_t cbLeft = *pcbBuf;
801
802	/*
803	* Duplicate the device description and update some fields we keep in cpu type.
804	*/
805	Assert(sizeof(VUSBDESCDEVICE) == 18);
806	VUSBDESCDEVICE DevDesc = *pDevDesc;
807	DevDesc.bcdUSB = RT_H2LE_U16(DevDesc.bcdUSB);
808	DevDesc.idVendor = RT_H2LE_U16(DevDesc.idVendor);
809	DevDesc.idProduct = RT_H2LE_U16(DevDesc.idProduct);
810	DevDesc.bcdDevice = RT_H2LE_U16(DevDesc.bcdDevice);
811
812	COPY_DATA(pbBuf, cbLeft, &DevDesc, sizeof(DevDesc));
813	COPY_DATA(pbBuf, cbLeft, pDevDesc + 1, pDevDesc->bLength - sizeof(DevDesc));
814
815	/* updated the size of the output buffer. */
816	*pcbBuf -= cbLeft;
817	}
818
819	#undef COPY_DATA
820
821	/**
822	* Checks whether a descriptor read can be satisfied by reading from the
823	* descriptor cache or has to be passed to the device.
824	* If we have descriptors cached, it is generally safe to satisfy descriptor reads
825	* from the cache. As usual, there is broken USB software and hardware out there
826	* and guests might try to read a nonexistent desciptor (out of range index for
827	* string or configuration descriptor) and rely on it not failing.
828	* Since we cannot very well guess if such invalid requests should really succeed,
829	* and what exactly should happen if they do, we pass such requests to the device.
830	* If the descriptor was cached because it was edited, and the guest bypasses the
831	* edited cache by reading a descriptor with an invalid index, it is probably
832	* best to smash the USB device with a large hammer.
833	*
834	* See @bugref{10016}.
835	*
836	* @returns false if request must be passed to device.
837	*/
838	bool vusbDevIsDescriptorInCache(PVUSBDEV pDev, PCVUSBSETUP pSetup)
839	{
840	unsigned int iIndex = (pSetup->wValue & 0xff);
841	Assert(pSetup->bRequest == VUSB_REQ_GET_DESCRIPTOR);
842
843	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) == VUSB_TO_DEVICE)
844	{
845	if (pDev->pDescCache->fUseCachedDescriptors)
846	{
847	switch (pSetup->wValue >> 8)
848	{
849	case VUSB_DT_DEVICE:
850	if (iIndex == 0)
851	return true;
852
853	LogRelMax(10, ("VUSB: %s: Warning: Reading device descriptor with non-zero index %u (wLength=%u), passing request to device\n",
854	pDev->pUsbIns->pszName, iIndex, pSetup->wLength));
855	break;
856
857	case VUSB_DT_CONFIG:
858	if (iIndex < pDev->pDescCache->pDevice->bNumConfigurations)
859	return true;
860
861	LogRelMax(10, ("VUSB: %s: Warning: Reading configuration descriptor invalid index %u (bNumConfigurations=%u, wLength=%u), passing request to device\n",
862	pDev->pUsbIns->pszName, iIndex, pDev->pDescCache->pDevice->bNumConfigurations, pSetup->wLength));
863	break;
864
865	case VUSB_DT_STRING:
866	if (pDev->pDescCache->fUseCachedStringsDescriptors)
867	{
868	if (pSetup->wIndex == 0) /* Language IDs. */
869	return true;
870
871	if (FindCachedString(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages,
872	pSetup->wIndex, iIndex))
873	return true;
874	}
875	break;
876
877	default:
878	break;
879	}
880	Log(("VUSB: %s: Descriptor not cached: type=%u descidx=%u lang=%u len=%u, passing request to device\n",
881	pDev->pUsbIns->pszName, pSetup->wValue >> 8, iIndex, pSetup->wIndex, pSetup->wLength));
882	}
883	}
884	return false;
885	}
886
887
888	/**
889	* Standard device request: GET_DESCRIPTOR
890	* @returns success indicator.
891	*/
892	static bool vusbDevStdReqGetDescriptor(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
893	{
894	RT_NOREF(EndPt);
895	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) == VUSB_TO_DEVICE)
896	{
897	switch (pSetup->wValue >> 8)
898	{
899	case VUSB_DT_DEVICE:
900	ReadCachedDeviceDesc(pDev->pDescCache->pDevice, pbBuf, pcbBuf);
901	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of device descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
902	return true;
903
904	case VUSB_DT_CONFIG:
905	{
906	unsigned int iIndex = (pSetup->wValue & 0xff);
907	if (iIndex >= pDev->pDescCache->pDevice->bNumConfigurations)
908	{
909	LogFlow(("vusbDevStdReqGetDescriptor: %s: iIndex=%u >= bNumConfigurations=%d !!!\n",
910	pDev->pUsbIns->pszName, iIndex, pDev->pDescCache->pDevice->bNumConfigurations));
911	return false;
912	}
913	ReadCachedConfigDesc(&pDev->pDescCache->paConfigs[iIndex], pbBuf, pcbBuf);
914	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of config descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
915	return true;
916	}
917
918	case VUSB_DT_STRING:
919	{
920	if (pSetup->wIndex == 0)
921	{
922	ReadCachedLangIdDesc(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages, pbBuf, pcbBuf);
923	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of language ID (string) descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
924	return true;
925	}
926	PCPDMUSBDESCCACHESTRING pString;
927	pString = FindCachedString(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages,
928	pSetup->wIndex, pSetup->wValue & 0xff);
929	if (pString)
930	{
931	ReadCachedStringDesc(pString, pbBuf, pcbBuf);
932	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of string descriptors \"%s\"\n",
933	pDev->pUsbIns->pszName, *pcbBuf, pString->psz));
934	return true;
935	}
936	break;
937	}
938
939	default:
940	break;
941	}
942	}
943	Log(("vusb: %s: warning: unknown descriptor: type=%u descidx=%u lang=%u len=%u!!!\n",
944	pDev->pUsbIns->pszName, pSetup->wValue >> 8, pSetup->wValue & 0xff, pSetup->wIndex, pSetup->wLength));
945	return false;
946	}
947
948
949	/**
950	* Service the standard USB requests.
951	*
952	* Devices may call this from controlmsg() if you want vusb core to handle your standard
953	* request, it's not necessary - you could handle them manually
954	*
955	* @param pDev The device.
956	* @param EndPoint The endpoint.
957	* @param pSetup Pointer to the setup request structure.
958	* @param pvBuf Buffer?
959	* @param pcbBuf ?
960	*/
961	bool vusbDevStandardRequest(PVUSBDEV pDev, int EndPoint, PVUSBSETUP pSetup, void pvBuf, uint32_t pcbBuf)
962	{
963	static bool (* const s_apfnStdReq[VUSB_REQ_MAX])(PVUSBDEV, int, PVUSBSETUP, uint8_t , uint32_t ) =
964	{
965	vusbDevStdReqGetStatus,
966	vusbDevStdReqClearFeature,
967	NULL,
968	vusbDevStdReqSetFeature,
969	NULL,
970	vusbDevStdReqSetAddress,
971	vusbDevStdReqGetDescriptor,
972	NULL,
973	vusbDevStdReqGetConfig,
974	vusbDevStdReqSetConfig,
975	vusbDevStdReqGetInterface,
976	vusbDevStdReqSetInterface,
977	NULL /* for iso */
978	};
979
980	/*
981	* Check that the device is in a valid state.
982	*/
983	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
984	if (enmState == VUSB_DEVICE_STATE_RESET)
985	{
986	LogRel(("VUSB: %s: standard control message ignored, the device is resetting\n", pDev->pUsbIns->pszName));
987	return false;
988	}
989
990	/*
991	* Do the request if it's one we want to deal with.
992	*/
993	if ( pSetup->bRequest >= VUSB_REQ_MAX
994	\|\| !s_apfnStdReq[pSetup->bRequest])
995	{
996	Log(("vusb: warning: standard req not implemented: message %u: val=%u idx=%u len=%u !!!\n",
997	pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
998	return false;
999	}
1000
1001	return s_apfnStdReq[pSetup->bRequest](pDev, EndPoint, pSetup, (uint8_t *)pvBuf, pcbBuf);
1002	}
1003
1004
1005	/**
1006	* Sets the address of a device.
1007	*
1008	* Called by status_completion() and vusbDevResetWorker().
1009	*/
1010	void vusbDevSetAddress(PVUSBDEV pDev, uint8_t u8Address)
1011	{
1012	LogFlow(("vusbDevSetAddress: pDev=%p[%s]/%i u8Address=%#x\n",
1013	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1014
1015	/*
1016	* Check that the device is in a valid state.
1017	*/
1018	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1019	VUSBDEV_ASSERT_VALID_STATE(enmState);
1020	if ( enmState == VUSB_DEVICE_STATE_ATTACHED
1021	\|\| enmState == VUSB_DEVICE_STATE_DETACHED)
1022	{
1023	LogFlow(("vusbDevSetAddress: %s: fails because %d < POWERED\n", pDev->pUsbIns->pszName, pDev->enmState));
1024	return;
1025	}
1026	if (enmState == VUSB_DEVICE_STATE_RESET)
1027	{
1028	LogRel(("VUSB: %s: set address ignored, the device is resetting\n", pDev->pUsbIns->pszName));
1029	return;
1030	}
1031
1032	/*
1033	* Ok, get on with it.
1034	*/
1035	if (pDev->u8Address == u8Address)
1036	return;
1037
1038	/** @todo The following logic belongs to the roothub and should actually be in that file. */
1039	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1040	AssertPtrReturnVoid(pRh);
1041
1042	RTCritSectEnter(&pRh->CritSectDevices);
1043
1044	/* Remove the device from the current address. */
1045	if (pDev->u8Address != VUSB_INVALID_ADDRESS)
1046	{
1047	Assert(pRh->apDevByAddr[pDev->u8Address] == pDev);
1048	pRh->apDevByAddr[pDev->u8Address] = NULL;
1049	}
1050
1051	if (u8Address == VUSB_DEFAULT_ADDRESS)
1052	{
1053	PVUSBDEV pDevDef = pRh->apDevByAddr[VUSB_DEFAULT_ADDRESS];
1054
1055	if (pDevDef)
1056	{
1057	pDevDef->u8Address = VUSB_INVALID_ADDRESS;
1058	pDevDef->u8NewAddress = VUSB_INVALID_ADDRESS;
1059	vusbDevSetStateCmp(pDevDef, VUSB_DEVICE_STATE_POWERED, VUSB_DEVICE_STATE_DEFAULT);
1060	Log(("2 DEFAULT ADDRS\n"));
1061	}
1062
1063	pRh->apDevByAddr[VUSB_DEFAULT_ADDRESS] = pDev;
1064	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1065	}
1066	else
1067	{
1068	Assert(!pRh->apDevByAddr[u8Address]);
1069	pRh->apDevByAddr[u8Address] = pDev;
1070	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
1071	}
1072
1073	pDev->u8Address = u8Address;
1074	RTCritSectLeave(&pRh->CritSectDevices);
1075
1076	Log(("vusb: %p[%s]/%i: Assigned address %u\n",
1077	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1078	}
1079
1080
1081	static DECLCALLBACK(int) vusbDevCancelAllUrbsWorker(PVUSBDEV pDev, bool fDetaching)
1082	{
1083	/*
1084	* Iterate the URBs and cancel them.
1085	*/
1086	PVUSBURBVUSB pVUsbUrb, pVUsbUrbNext;
1087	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1088	{
1089	PVUSBURB pUrb = pVUsbUrb->pUrb;
1090
1091	Assert(pUrb->pVUsb->pDev == pDev);
1092
1093	LogFlow(("%s: vusbDevCancelAllUrbs: CANCELING URB\n", pUrb->pszDesc));
1094	int rc = vusbUrbCancelWorker(pUrb, CANCELMODE_FAIL);
1095	AssertRC(rc);
1096	}
1097
1098	/*
1099	* Reap any URBs which became ripe during cancel now.
1100	*/
1101	RTCritSectEnter(&pDev->CritSectAsyncUrbs);
1102	unsigned cReaped;
1103	do
1104	{
1105	cReaped = 0;
1106	pVUsbUrb = RTListGetFirst(&pDev->LstAsyncUrbs, VUSBURBVUSBINT, NdLst);
1107	while (pVUsbUrb)
1108	{
1109	PVUSBURBVUSB pNext = RTListGetNext(&pDev->LstAsyncUrbs, pVUsbUrb, VUSBURBVUSBINT, NdLst);
1110	PVUSBURB pUrb = pVUsbUrb->pUrb;
1111	Assert(pUrb->pVUsb->pDev == pDev);
1112
1113	PVUSBURB pRipe = NULL;
1114	if (pUrb->enmState == VUSBURBSTATE_REAPED)
1115	pRipe = pUrb;
1116	else if (pUrb->enmState == VUSBURBSTATE_CANCELLED)
1117	#ifdef RT_OS_WINDOWS /** @todo Windows doesn't do cancelling, thus this kludge to prevent really bad
1118	* things from happening if we leave a pending URB behinds. */
1119	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 1500 : 0 /ms/);
1120	#else
1121	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 10 : 0 /ms/);
1122	#endif
1123	else
1124	AssertMsgFailed(("pUrb=%p enmState=%d\n", pUrb, pUrb->enmState));
1125	if (pRipe)
1126	{
1127	if ( pNext
1128	&& pRipe == pNext->pUrb)
1129	pNext = RTListGetNext(&pDev->LstAsyncUrbs, pNext, VUSBURBVUSBINT, NdLst);
1130	vusbUrbRipe(pRipe);
1131	cReaped++;
1132	}
1133
1134	pVUsbUrb = pNext;
1135	}
1136	} while (cReaped > 0);
1137
1138	/*
1139	* If we're detaching, we'll have to orphan any leftover URBs.
1140	*/
1141	if (fDetaching)
1142	{
1143	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1144	{
1145	PVUSBURB pUrb = pVUsbUrb->pUrb;
1146	Assert(pUrb->pVUsb->pDev == pDev);
1147
1148	AssertMsgFailed(("%s: Leaking left over URB! state=%d pDev=%p[%s]\n",
1149	pUrb->pszDesc, pUrb->enmState, pDev, pDev->pUsbIns->pszName));
1150	vusbUrbUnlink(pUrb);
1151	/* Unlink isn't enough, because boundary timer and detaching will try to reap it.
1152	* It was tested with MSD & iphone attachment to vSMP guest, if
1153	* it breaks anything, please add comment here, why we should unlink only.
1154	*/
1155	pUrb->pVUsb->pfnFree(pUrb);
1156	}
1157	}
1158	RTCritSectLeave(&pDev->CritSectAsyncUrbs);
1159	return VINF_SUCCESS;
1160	}
1161
1162	/**
1163	* Cancels and completes (with CRC failure) all async URBs pending
1164	* on a device. This is typically done as part of a reset and
1165	* before detaching a device.
1166	*
1167	* @returns nothing.
1168	* @param pDev The VUSB device instance.
1169	* @param fDetaching If set, we will unconditionally unlink (and leak)
1170	* any URBs which isn't reaped.
1171	*/
1172	DECLHIDDEN(void) vusbDevCancelAllUrbs(PVUSBDEV pDev, bool fDetaching)
1173	{
1174	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevCancelAllUrbsWorker, 2, pDev, fDetaching);
1175	AssertRC(rc);
1176	}
1177
1178
1179	static DECLCALLBACK(int) vusbDevUrbIoThread(RTTHREAD hThread, void *pvUser)
1180	{
1181	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1182
1183	/* Notify the starter that we are up and running. */
1184	RTThreadUserSignal(hThread);
1185
1186	LogFlowFunc(("Entering work loop\n"));
1187
1188	while (!ASMAtomicReadBool(&pDev->fTerminate))
1189	{
1190	if (vusbDevGetState(pDev) != VUSB_DEVICE_STATE_RESET)
1191	vusbUrbDoReapAsyncDev(pDev, RT_INDEFINITE_WAIT);
1192
1193	/* Process any URBs waiting to be cancelled first. */
1194	int rc = RTReqQueueProcess(pDev->hReqQueueSync, 0); /* Don't wait if there is nothing to do. */
1195	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT); NOREF(rc);
1196	}
1197
1198	return VINF_SUCCESS;
1199	}
1200
1201	int vusbDevUrbIoThreadWakeup(PVUSBDEV pDev)
1202	{
1203	ASMAtomicXchgBool(&pDev->fWokenUp, true);
1204	return pDev->pUsbIns->pReg->pfnWakeup(pDev->pUsbIns);
1205	}
1206
1207	/**
1208	* Create the URB I/O thread.
1209	*
1210	* @returns VBox status code.
1211	* @param pDev The VUSB device.
1212	*/
1213	int vusbDevUrbIoThreadCreate(PVUSBDEV pDev)
1214	{
1215	int rc = VINF_SUCCESS;
1216
1217	ASMAtomicXchgBool(&pDev->fTerminate, false);
1218	rc = RTThreadCreateF(&pDev->hUrbIoThread, vusbDevUrbIoThread, pDev, 0, RTTHREADTYPE_IO,
1219	RTTHREADFLAGS_WAITABLE, "USBDevIo-%d", pDev->i16Port);
1220	if (RT_SUCCESS(rc))
1221	{
1222	/* Wait for it to become active. */
1223	rc = RTThreadUserWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT);
1224	}
1225
1226	return rc;
1227	}
1228
1229	/**
1230	* Destro the URB I/O thread.
1231	*
1232	* @returns VBox status code.
1233	* @param pDev The VUSB device.
1234	*/
1235	int vusbDevUrbIoThreadDestroy(PVUSBDEV pDev)
1236	{
1237	int rc = VINF_SUCCESS;
1238	int rcThread = VINF_SUCCESS;
1239
1240	ASMAtomicXchgBool(&pDev->fTerminate, true);
1241	vusbDevUrbIoThreadWakeup(pDev);
1242
1243	rc = RTThreadWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT, &rcThread);
1244	if (RT_SUCCESS(rc))
1245	rc = rcThread;
1246
1247	pDev->hUrbIoThread = NIL_RTTHREAD;
1248
1249	return rc;
1250	}
1251
1252
1253	/**
1254	* Attaches a device to the given hub.
1255	*
1256	* @returns VBox status code.
1257	* @param pDev The device to attach.
1258	* @param pHub The roothub to attach to.
1259	*/
1260	int vusbDevAttach(PVUSBDEV pDev, PVUSBROOTHUB pHub)
1261	{
1262	AssertMsg(pDev->enmState == VUSB_DEVICE_STATE_DETACHED, ("enmState=%d\n", pDev->enmState));
1263
1264	pDev->pHub = pHub;
1265	pDev->enmState = VUSB_DEVICE_STATE_ATTACHED;
1266
1267	/* noone else ever messes with the default pipe while we are attached */
1268	vusbDevMapEndpoint(pDev, &g_Endpoint0);
1269	vusbDevDoSelectConfig(pDev, &g_Config0);
1270
1271	/* Create I/O thread and attach to the hub. */
1272	int rc = vusbDevUrbIoThreadCreate(pDev);
1273	if (RT_FAILURE(rc))
1274	{
1275	pDev->pHub = NULL;
1276	pDev->enmState = VUSB_DEVICE_STATE_DETACHED;
1277	}
1278
1279	return rc;
1280	}
1281
1282
1283	/**
1284	* Detaches a device from the hub it's attached to.
1285	*
1286	* @returns VBox status code.
1287	* @param pDev The device to detach.
1288	*
1289	* @remark This can be called in any state but reset.
1290	*/
1291	int vusbDevDetach(PVUSBDEV pDev)
1292	{
1293	LogFlow(("vusbDevDetach: pDev=%p[%s] enmState=%#x\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1294	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1295	Assert(pDev->enmState != VUSB_DEVICE_STATE_RESET);
1296
1297	/*
1298	* Destroy I/O thread and request queue last because they might still be used
1299	* when cancelling URBs.
1300	*/
1301	vusbDevUrbIoThreadDestroy(pDev);
1302
1303	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DETACHED);
1304	pDev->pHub = NULL;
1305
1306	/* Remove the configuration */
1307	pDev->pCurCfgDesc = NULL;
1308	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1309	vusbDevResetPipeData(&pDev->aPipes[i]);
1310	return VINF_SUCCESS;
1311	}
1312
1313
1314	/**
1315	* Destroys a device, detaching it from the hub if necessary.
1316	*
1317	* @param pDev The device.
1318	* @thread any.
1319	*/
1320	void vusbDevDestroy(PVUSBDEV pDev)
1321	{
1322	LogFlow(("vusbDevDestroy: pDev=%p[%s] enmState=%d\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1323
1324	RTMemFree(pDev->paIfStates);
1325
1326	PDMUsbHlpTimerDestroy(pDev->pUsbIns, pDev->hResetTimer);
1327	pDev->hResetTimer = NIL_TMTIMERHANDLE;
1328
1329	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1330	{
1331	Assert(pDev->aPipes[i].pCtrl == NULL);
1332	RTCritSectDelete(&pDev->aPipes[i].CritSectCtrl);
1333	}
1334
1335	if (pDev->hSniffer != VUSBSNIFFER_NIL)
1336	VUSBSnifferDestroy(pDev->hSniffer);
1337
1338	vusbUrbPoolDestroy(&pDev->UrbPool);
1339
1340	int rc = RTReqQueueDestroy(pDev->hReqQueueSync);
1341	AssertRC(rc);
1342	pDev->hReqQueueSync = NIL_RTREQQUEUE;
1343
1344	RTCritSectDelete(&pDev->CritSectAsyncUrbs);
1345	/* Not using vusbDevSetState() deliberately here because it would assert on the state. */
1346	pDev->enmState = VUSB_DEVICE_STATE_DESTROYED;
1347	pDev->pUsbIns->pvVUsbDev2 = NULL;
1348	RTMemFree(pDev);
1349	}
1350
1351
1352	/* -=-=-=-=-=- VUSBIDEVICE methods -=-=-=-=-=- */
1353
1354
1355	/**
1356	* The actual reset has been done, do completion on EMT.
1357	*
1358	* There are several things we have to do now, like set default
1359	* config and address, and cleanup the state of control pipes.
1360	*
1361	* It's possible that the device has a delayed destroy request
1362	* pending when we get here. This can happen for async resetting.
1363	* We deal with it here, since we're now executing on the EMT
1364	* thread and the destruction will be properly serialized now.
1365	*
1366	* @param pDev The device that is being reset.
1367	* @param rc The vusbDevResetWorker return code.
1368	* @param pfnDone The done callback specified by the caller of vusbDevReset().
1369	* @param pvUser The user argument for the callback.
1370	*/
1371	static void vusbDevResetDone(PVUSBDEV pDev, int rc, PFNVUSBRESETDONE pfnDone, void *pvUser)
1372	{
1373	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1374	Assert(pDev->enmState == VUSB_DEVICE_STATE_RESET);
1375
1376	/*
1377	* Do control pipe cleanup regardless of state and result.
1378	*/
1379	for (unsigned i = 0; i < VUSB_PIPE_MAX; i++)
1380	if (pDev->aPipes[i].pCtrl)
1381	vusbMsgResetExtraData(pDev->aPipes[i].pCtrl);
1382
1383	/*
1384	* Switch to the default state.
1385	*/
1386	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1387	pDev->u16Status = 0;
1388	vusbDevDoSelectConfig(pDev, &g_Config0);
1389	vusbDevSetAddress(pDev, VUSB_DEFAULT_ADDRESS);
1390	if (pfnDone)
1391	pfnDone(&pDev->IDevice, pDev->i16Port, rc, pvUser);
1392	}
1393
1394
1395	/**
1396	* @callback_method_impl{FNTMTIMERUSB,
1397	* Timer callback for doing reset completion.}
1398	*/
1399	static DECLCALLBACK(void) vusbDevResetDoneTimer(PPDMUSBINS pUsbIns, TMTIMERHANDLE hTimer, void *pvUser)
1400	{
1401	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1402	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)pDev->pvArgs;
1403	Assert(pDev->pUsbIns == pUsbIns);
1404	RT_NOREF(pUsbIns, hTimer);
1405
1406	AssertPtr(pArgs);
1407
1408	/*
1409	* Reset-done processing and cleanup.
1410	*/
1411	pDev->pvArgs = NULL;
1412	vusbDevResetDone(pDev, pArgs->rc, pArgs->pfnDone, pArgs->pvUser);
1413	RTMemFree(pArgs);
1414	}
1415
1416
1417	/**
1418	* Perform the actual reset.
1419	*
1420	* @thread EMT or a VUSB reset thread.
1421	*/
1422	static DECLCALLBACK(int) vusbDevResetWorker(PVUSBDEV pDev, bool fResetOnLinux, bool fUseTimer, PVUSBRESETARGS pArgs)
1423	{
1424	uint64_t const uTimerDeadline = !fUseTimer ? 0
1425	: PDMUsbHlpTimerGet(pDev->pUsbIns, pDev->hResetTimer)
1426	+ PDMUsbHlpTimerFromMilli(pDev->pUsbIns, pDev->hResetTimer, 10);
1427
1428	int rc = VINF_SUCCESS;
1429	if (pDev->pUsbIns->pReg->pfnUsbReset)
1430	rc = pDev->pUsbIns->pReg->pfnUsbReset(pDev->pUsbIns, fResetOnLinux);
1431
1432	if (pArgs)
1433	{
1434	pArgs->rc = rc;
1435	rc = VINF_SUCCESS;
1436	}
1437
1438	if (fUseTimer)
1439	{
1440	/*
1441	* We use a timer to communicate the result back to EMT.
1442	* This avoids suspend + poweroff issues, and it should give
1443	* us more accurate scheduling than making this thread sleep.
1444	*/
1445	int rc2 = PDMUsbHlpTimerSet(pDev->pUsbIns, pDev->hResetTimer, uTimerDeadline);
1446	AssertReleaseRC(rc2);
1447	}
1448
1449	LogFlow(("vusbDevResetWorker: %s: returns %Rrc\n", pDev->pUsbIns->pszName, rc));
1450	return rc;
1451	}
1452
1453
1454	/**
1455	* Resets a device.
1456	*
1457	* Since a device reset shall take at least 10ms from the guest point of view,
1458	* it must be performed asynchronously. We create a thread which performs this
1459	* operation and ensures it will take at least 10ms.
1460	*
1461	* At times - like init - a synchronous reset is required, this can be done
1462	* by passing NULL for pfnDone.
1463	*
1464	* While the device is being reset it is in the VUSB_DEVICE_STATE_RESET state.
1465	* On completion it will be in the VUSB_DEVICE_STATE_DEFAULT state if successful,
1466	* or in the VUSB_DEVICE_STATE_DETACHED state if the rest failed.
1467	*
1468	* @returns VBox status code.
1469	*
1470	* @param pDevice Pointer to the VUSB device interface.
1471	* @param fResetOnLinux Whether it's safe to reset the device(s) on a linux
1472	* host system. See discussion of logical reconnects elsewhere.
1473	* @param pfnDone Pointer to the completion routine. If NULL a synchronous
1474	* reset is preformed not respecting the 10ms.
1475	* @param pvUser Opaque user data to pass to the done callback.
1476	* @param pVM Pointer to the VM handle for performing the done function
1477	* on the EMT thread.
1478	* @thread EMT
1479	*/
1480	static DECLCALLBACK(int) vusbIDeviceReset(PVUSBIDEVICE pDevice, bool fResetOnLinux,
1481	PFNVUSBRESETDONE pfnDone, void *pvUser, PVM pVM)
1482	{
1483	RT_NOREF(pVM);
1484	PVUSBDEV pDev = (PVUSBDEV)pDevice;
1485	Assert(!pfnDone \|\| pVM);
1486	LogFlow(("vusb: reset: [%s]/%i\n", pDev->pUsbIns->pszName, pDev->i16Port));
1487
1488	/*
1489	* Only one reset operation at a time.
1490	*/
1491	const VUSBDEVICESTATE enmStateOld = vusbDevSetState(pDev, VUSB_DEVICE_STATE_RESET);
1492	if (enmStateOld == VUSB_DEVICE_STATE_RESET)
1493	{
1494	LogRel(("VUSB: %s: reset request is ignored, the device is already resetting!\n", pDev->pUsbIns->pszName));
1495	return VERR_VUSB_DEVICE_IS_RESETTING;
1496	}
1497
1498	/*
1499	* First, cancel all async URBs.
1500	*/
1501	vusbDevCancelAllUrbs(pDev, false);
1502
1503	/* Async or sync? */
1504	if (pfnDone)
1505	{
1506	/*
1507	* Async fashion.
1508	*/
1509	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)RTMemTmpAlloc(sizeof(*pArgs));
1510	if (pArgs)
1511	{
1512	pArgs->pDev = pDev;
1513	pArgs->pfnDone = pfnDone;
1514	pArgs->pvUser = pvUser;
1515	pArgs->rc = VINF_SUCCESS;
1516	AssertPtrNull(pDev->pvArgs);
1517	pDev->pvArgs = pArgs;
1518	int rc = vusbDevIoThreadExec(pDev, 0 /* fFlags */, (PFNRT)vusbDevResetWorker, 4, pDev, fResetOnLinux, true, pArgs);
1519	if (RT_SUCCESS(rc))
1520	return rc;
1521
1522	RTMemTmpFree(pArgs);
1523	}
1524	/* fall back to sync on failure */
1525	}
1526
1527	/*
1528	* Sync fashion.
1529	*/
1530	int rc = vusbDevResetWorker(pDev, fResetOnLinux, false, NULL);
1531	vusbDevResetDone(pDev, rc, pfnDone, pvUser);
1532	return rc;
1533	}
1534
1535
1536	/**
1537	* Powers on the device.
1538	*
1539	* @returns VBox status code.
1540	* @param pInterface Pointer to the device interface structure.
1541	*/
1542	static DECLCALLBACK(int) vusbIDevicePowerOn(PVUSBIDEVICE pInterface)
1543	{
1544	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1545	LogFlow(("vusbDevPowerOn: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1546
1547	/*
1548	* Check that the device is in a valid state.
1549	*/
1550	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1551	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1552	{
1553	Log(("vusb: warning: attempt to power on detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1554	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1555	}
1556	if (enmState == VUSB_DEVICE_STATE_RESET)
1557	{
1558	LogRel(("VUSB: %s: power on ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1559	return VERR_VUSB_DEVICE_IS_RESETTING;
1560	}
1561
1562	/*
1563	* Do the job.
1564	*/
1565	if (enmState == VUSB_DEVICE_STATE_ATTACHED)
1566	vusbDevSetState(pDev, VUSB_DEVICE_STATE_POWERED);
1567
1568	return VINF_SUCCESS;
1569	}
1570
1571
1572	/**
1573	* Powers off the device.
1574	*
1575	* @returns VBox status code.
1576	* @param pInterface Pointer to the device interface structure.
1577	*/
1578	static DECLCALLBACK(int) vusbIDevicePowerOff(PVUSBIDEVICE pInterface)
1579	{
1580	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1581	LogFlow(("vusbDevPowerOff: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1582
1583	/*
1584	* Check that the device is in a valid state.
1585	*/
1586	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1587	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1588	{
1589	Log(("vusb: warning: attempt to power off detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1590	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1591	}
1592	if (enmState == VUSB_DEVICE_STATE_RESET)
1593	{
1594	LogRel(("VUSB: %s: power off ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1595	return VERR_VUSB_DEVICE_IS_RESETTING;
1596	}
1597
1598	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ATTACHED);
1599	return VINF_SUCCESS;
1600	}
1601
1602
1603	/**
1604	* Get the state of the device.
1605	*
1606	* @returns Device state.
1607	* @param pInterface Pointer to the device interface structure.
1608	*/
1609	static DECLCALLBACK(VUSBDEVICESTATE) vusbIDeviceGetState(PVUSBIDEVICE pInterface)
1610	{
1611	return vusbDevGetState((PVUSBDEV)pInterface);
1612	}
1613
1614
1615	/**
1616	* @interface_method_impl{VUSBIDEVICE,pfnIsSavedStateSupported}
1617	*/
1618	static DECLCALLBACK(bool) vusbIDeviceIsSavedStateSupported(PVUSBIDEVICE pInterface)
1619	{
1620	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1621	bool fSavedStateSupported = RT_BOOL(pDev->pUsbIns->pReg->fFlags & PDM_USBREG_SAVED_STATE_SUPPORTED);
1622
1623	LogFlowFunc(("pInterface=%p\n", pInterface));
1624
1625	LogFlowFunc(("returns %RTbool\n", fSavedStateSupported));
1626	return fSavedStateSupported;
1627	}
1628
1629
1630	/**
1631	* @interface_method_impl{VUSBIDEVICE,pfnGetState}
1632	*/
1633	static DECLCALLBACK(VUSBSPEED) vusbIDeviceGetSpeed(PVUSBIDEVICE pInterface)
1634	{
1635	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1636	VUSBSPEED enmSpeed = pDev->pUsbIns->enmSpeed;
1637
1638	LogFlowFunc(("pInterface=%p, returns %u\n", pInterface, enmSpeed));
1639	return enmSpeed;
1640	}
1641
1642
1643	/**
1644	* The maximum number of interfaces the device can have in all of it's configuration.
1645	*
1646	* @returns Number of interfaces.
1647	* @param pDev The device.
1648	*/
1649	size_t vusbDevMaxInterfaces(PVUSBDEV pDev)
1650	{
1651	uint8_t cMax = 0;
1652	unsigned i = pDev->pDescCache->pDevice->bNumConfigurations;
1653	while (i-- > 0)
1654	{
1655	if (pDev->pDescCache->paConfigs[i].Core.bNumInterfaces > cMax)
1656	cMax = pDev->pDescCache->paConfigs[i].Core.bNumInterfaces;
1657	}
1658
1659	return cMax;
1660	}
1661
1662
1663	/**
1664	* Executes a given function on the I/O thread.
1665	*
1666	* @returns IPRT status code.
1667	* @param pDev The USB device instance data.
1668	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1669	* @param pfnFunction The function to execute.
1670	* @param cArgs Number of arguments to the function.
1671	* @param Args The parameter list.
1672	*
1673	* @remarks See remarks on RTReqQueueCallV
1674	*/
1675	DECLHIDDEN(int) vusbDevIoThreadExecV(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, va_list Args)
1676	{
1677	int rc = VINF_SUCCESS;
1678	PRTREQ hReq = NULL;
1679
1680	Assert(pDev->hUrbIoThread != NIL_RTTHREAD);
1681	if (RT_LIKELY(pDev->hUrbIoThread != NIL_RTTHREAD))
1682	{
1683	uint32_t fReqFlags = RTREQFLAGS_IPRT_STATUS;
1684
1685	if (!(fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1686	fReqFlags \|= RTREQFLAGS_NO_WAIT;
1687
1688	rc = RTReqQueueCallV(pDev->hReqQueueSync, &hReq, 0 /* cMillies */, fReqFlags, pfnFunction, cArgs, Args);
1689	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT);
1690
1691	/* In case we are called on the I/O thread just process the request. */
1692	if ( pDev->hUrbIoThread == RTThreadSelf()
1693	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1694	{
1695	int rc2 = RTReqQueueProcess(pDev->hReqQueueSync, 0);
1696	Assert(RT_SUCCESS(rc2) \|\| rc2 == VERR_TIMEOUT); NOREF(rc2);
1697	}
1698	else
1699	vusbDevUrbIoThreadWakeup(pDev);
1700
1701	if ( rc == VERR_TIMEOUT
1702	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1703	{
1704	rc = RTReqWait(hReq, RT_INDEFINITE_WAIT);
1705	AssertRC(rc);
1706	}
1707	RTReqRelease(hReq);
1708	}
1709	else
1710	rc = VERR_INVALID_STATE;
1711
1712	return rc;
1713	}
1714
1715
1716	/**
1717	* Executes a given function on the I/O thread.
1718	*
1719	* @returns IPRT status code.
1720	* @param pDev The USB device instance data.
1721	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1722	* @param pfnFunction The function to execute.
1723	* @param cArgs Number of arguments to the function.
1724	* @param ... The parameter list.
1725	*
1726	* @remarks See remarks on RTReqQueueCallV
1727	*/
1728	DECLHIDDEN(int) vusbDevIoThreadExec(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, ...)
1729	{
1730	int rc = VINF_SUCCESS;
1731	va_list va;
1732
1733	va_start(va, cArgs);
1734	rc = vusbDevIoThreadExecV(pDev, fFlags, pfnFunction, cArgs, va);
1735	va_end(va);
1736	return rc;
1737	}
1738
1739
1740	/**
1741	* Executes a given function synchronously on the I/O thread waiting for it to complete.
1742	*
1743	* @returns IPRT status code.
1744	* @param pDev The USB device instance data
1745	* @param pfnFunction The function to execute.
1746	* @param cArgs Number of arguments to the function.
1747	* @param ... The parameter list.
1748	*
1749	* @remarks See remarks on RTReqQueueCallV
1750	*/
1751	DECLHIDDEN(int) vusbDevIoThreadExecSync(PVUSBDEV pDev, PFNRT pfnFunction, unsigned cArgs, ...)
1752	{
1753	int rc = VINF_SUCCESS;
1754	va_list va;
1755
1756	va_start(va, cArgs);
1757	rc = vusbDevIoThreadExecV(pDev, VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC, pfnFunction, cArgs, va);
1758	va_end(va);
1759	return rc;
1760	}
1761
1762
1763	/**
1764	* Initialize a new VUSB device.
1765	*
1766	* @returns VBox status code.
1767	* @param pDev The VUSB device to initialize.
1768	* @param pUsbIns Pointer to the PDM USB Device instance.
1769	* @param pszCaptureFilename Optional fileame to capture the traffic to.
1770	*/
1771	int vusbDevInit(PVUSBDEV pDev, PPDMUSBINS pUsbIns, const char *pszCaptureFilename)
1772	{
1773	/*
1774	* Initialize the device data members.
1775	* (All that are Non-Zero at least.)
1776	*/
1777	Assert(!pDev->IDevice.pfnReset);
1778	Assert(!pDev->IDevice.pfnPowerOn);
1779	Assert(!pDev->IDevice.pfnPowerOff);
1780	Assert(!pDev->IDevice.pfnGetState);
1781	Assert(!pDev->IDevice.pfnIsSavedStateSupported);
1782
1783	pDev->IDevice.pfnReset = vusbIDeviceReset;
1784	pDev->IDevice.pfnPowerOn = vusbIDevicePowerOn;
1785	pDev->IDevice.pfnPowerOff = vusbIDevicePowerOff;
1786	pDev->IDevice.pfnGetState = vusbIDeviceGetState;
1787	pDev->IDevice.pfnIsSavedStateSupported = vusbIDeviceIsSavedStateSupported;
1788	pDev->IDevice.pfnGetSpeed = vusbIDeviceGetSpeed;
1789	pDev->pUsbIns = pUsbIns;
1790	pDev->pHub = NULL;
1791	pDev->enmState = VUSB_DEVICE_STATE_DETACHED;
1792	pDev->cRefs = 1;
1793	pDev->u8Address = VUSB_INVALID_ADDRESS;
1794	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
1795	pDev->i16Port = -1;
1796	pDev->u16Status = 0;
1797	pDev->pDescCache = NULL;
1798	pDev->pCurCfgDesc = NULL;
1799	pDev->paIfStates = NULL;
1800	RTListInit(&pDev->LstAsyncUrbs);
1801	memset(&pDev->aPipes[0], 0, sizeof(pDev->aPipes));
1802	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1803	{
1804	int rc = RTCritSectInit(&pDev->aPipes[i].CritSectCtrl);
1805	AssertRCReturn(rc, rc);
1806	}
1807	pDev->hResetTimer = NIL_TMTIMERHANDLE;
1808	pDev->hSniffer = VUSBSNIFFER_NIL;
1809
1810	int rc = RTCritSectInit(&pDev->CritSectAsyncUrbs);
1811	AssertRCReturn(rc, rc);
1812
1813	/* Create the URB pool. */
1814	rc = vusbUrbPoolInit(&pDev->UrbPool);
1815	AssertRCReturn(rc, rc);
1816
1817	/* Setup request queue executing synchronous tasks on the I/O thread. */
1818	rc = RTReqQueueCreate(&pDev->hReqQueueSync);
1819	AssertRCReturn(rc, rc);
1820
1821	/*
1822	* Create the reset timer. Make sure the name is unique as we're generic code.
1823	*/
1824	static uint32_t volatile s_iSeq;
1825	char szDesc[32];
1826	RTStrPrintf(szDesc, sizeof(szDesc), "VUSB Reset #%u", ASMAtomicIncU32(&s_iSeq));
1827	rc = PDMUsbHlpTimerCreate(pDev->pUsbIns, TMCLOCK_VIRTUAL, vusbDevResetDoneTimer, pDev, 0 /fFlags/,
1828	szDesc, &pDev->hResetTimer);
1829	AssertRCReturn(rc, rc);
1830
1831	if (pszCaptureFilename)
1832	{
1833	rc = VUSBSnifferCreate(&pDev->hSniffer, 0, pszCaptureFilename, NULL, NULL);
1834	AssertRCReturn(rc, rc);
1835	}
1836
1837	/*
1838	* Get the descriptor cache from the device. (shall cannot fail)
1839	*/
1840	pDev->pDescCache = pUsbIns->pReg->pfnUsbGetDescriptorCache(pUsbIns);
1841	AssertPtr(pDev->pDescCache);
1842	#ifdef VBOX_STRICT
1843	if (pDev->pDescCache->fUseCachedStringsDescriptors)
1844	{
1845	int32_t iPrevId = -1;
1846	for (unsigned iLang = 0; iLang < pDev->pDescCache->cLanguages; iLang++)
1847	{
1848	Assert((int32_t)pDev->pDescCache->paLanguages[iLang].idLang > iPrevId);
1849	iPrevId = pDev->pDescCache->paLanguages[iLang].idLang;
1850
1851	int32_t idxPrevStr = -1;
1852	PCPDMUSBDESCCACHESTRING paStrings = pDev->pDescCache->paLanguages[iLang].paStrings;
1853	unsigned cStrings = pDev->pDescCache->paLanguages[iLang].cStrings;
1854	for (unsigned iStr = 0; iStr < cStrings; iStr++)
1855	{
1856	Assert((int32_t)paStrings[iStr].idx > idxPrevStr);
1857	idxPrevStr = paStrings[iStr].idx;
1858	size_t cch = strlen(paStrings[iStr].psz);
1859	Assert(cch <= 127);
1860	}
1861	}
1862	}
1863	#endif
1864
1865	/*
1866	* Allocate memory for the interface states.
1867	*/
1868	size_t cbIface = vusbDevMaxInterfaces(pDev) * sizeof(*pDev->paIfStates);
1869	pDev->paIfStates = (PVUSBINTERFACESTATE)RTMemAllocZ(cbIface);
1870	AssertMsgReturn(pDev->paIfStates, ("RTMemAllocZ(%d) failed\n", cbIface), VERR_NO_MEMORY);
1871
1872	return VINF_SUCCESS;
1873	}
1874
1875	/*
1876	* Local Variables:
1877	* mode: c
1878	* c-file-style: "bsd"
1879	* c-basic-offset: 4
1880	* tab-width: 4
1881	* indent-tabs-mode: s
1882	* End:
1883	*/
1884

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source: vbox/trunk/src/VBox/Devices/USB/VUSBDevice.cpp@ 97046

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