VUSBDevice.cpp@ 94342

Last change on this file since 94342 was 93989, checked in by vboxsync, 3 years ago
Devices/USB: Fix memory leak introduced by r150140, and get rid of the VUSBDEV member of the roothub which is not used anyway, bugref:10196
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 62.0 KB

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1	/* $Id: VUSBDevice.cpp 93989 2022-02-28 15:28:20Z vboxsync $ */
2	/** @file
3	* Virtual USB - Device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_VUSB
23	#include <VBox/vmm/pdm.h>
24	#include <VBox/vmm/vmapi.h>
25	#include <VBox/err.h>
26	#include <VBox/log.h>
27	#include <iprt/alloc.h>
28	#include <iprt/time.h>
29	#include <iprt/thread.h>
30	#include <iprt/semaphore.h>
31	#include <iprt/string.h>
32	#include <iprt/assert.h>
33	#include <iprt/asm.h>
34	#include "VUSBInternal.h"
35
36	#include "VUSBSniffer.h"
37
38
39	/*********************************************************************************************************************************
40	* Structures and Typedefs *
41	*********************************************************************************************************************************/
42	/**
43	* Argument package of vusbDevResetThread().
44	*/
45	typedef struct vusb_reset_args
46	{
47	/** Pointer to the device which is being reset. */
48	PVUSBDEV pDev;
49	/** The reset return code. */
50	int rc;
51	/** Pointer to the completion callback. */
52	PFNVUSBRESETDONE pfnDone;
53	/** User argument to pfnDone. */
54	void *pvUser;
55	} VUSBRESETARGS, *PVUSBRESETARGS;
56
57
58	/*********************************************************************************************************************************
59	* Global Variables *
60	*********************************************************************************************************************************/
61	/** Default message pipe. */
62	const VUSBDESCENDPOINTEX g_Endpoint0 =
63	{
64	{
65	/* .bLength = */ VUSB_DT_ENDPOINT_MIN_LEN,
66	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
67	/* .bEndpointAddress = */ 0,
68	/* .bmAttributes = */ 0,
69	/* .wMaxPacketSize = */ 64,
70	/* .bInterval = */ 0
71	},
72	NULL
73	};
74
75	/** Default configuration. */
76	const VUSBDESCCONFIGEX g_Config0 =
77	{
78	{
79	/* .bLength = */ VUSB_DT_CONFIG_MIN_LEN,
80	/* .bDescriptorType = */ VUSB_DT_CONFIG,
81	/* .WTotalLength = / 0, / (auto-calculated) */
82	/* .bNumInterfaces = */ 0,
83	/* .bConfigurationValue =*/ 0,
84	/* .iConfiguration = */ 0,
85	/* .bmAttributes = */ 0x80,
86	/* .MaxPower = */ 14
87	},
88	NULL,
89	NULL
90	};
91
92
93
94	static PCVUSBDESCCONFIGEX vusbDevFindCfgDesc(PVUSBDEV pDev, int iCfg)
95	{
96	if (iCfg == 0)
97	return &g_Config0;
98
99	for (unsigned i = 0; i < pDev->pDescCache->pDevice->bNumConfigurations; i++)
100	if (pDev->pDescCache->paConfigs[i].Core.bConfigurationValue == iCfg)
101	return &pDev->pDescCache->paConfigs[i];
102	return NULL;
103	}
104
105	static PVUSBINTERFACESTATE vusbDevFindIfState(PVUSBDEV pDev, int iIf)
106	{
107	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
108	if (pDev->paIfStates[i].pIf->paSettings[0].Core.bInterfaceNumber == iIf)
109	return &pDev->paIfStates[i];
110	return NULL;
111	}
112
113	static PCVUSBDESCINTERFACEEX vusbDevFindAltIfDesc(PCVUSBINTERFACESTATE pIfState, int iAlt)
114	{
115	for (uint32_t i = 0; i < pIfState->pIf->cSettings; i++)
116	if (pIfState->pIf->paSettings[i].Core.bAlternateSetting == iAlt)
117	return &pIfState->pIf->paSettings[i];
118	return NULL;
119	}
120
121	void vusbDevMapEndpoint(PVUSBDEV pDev, PCVUSBDESCENDPOINTEX pEndPtDesc)
122	{
123	uint8_t i8Addr = pEndPtDesc->Core.bEndpointAddress & 0xF;
124	PVUSBPIPE pPipe = &pDev->aPipes[i8Addr];
125	LogFlow(("vusbDevMapEndpoint: pDev=%p[%s] pEndPtDesc=%p{.bEndpointAddress=%#x, .bmAttributes=%#x} p=%p stage %s->SETUP\n",
126	pDev, pDev->pUsbIns->pszName, pEndPtDesc, pEndPtDesc->Core.bEndpointAddress, pEndPtDesc->Core.bmAttributes,
127	pPipe, g_apszCtlStates[pPipe->pCtrl ? pPipe->pCtrl->enmStage : 3]));
128
129	if ((pEndPtDesc->Core.bmAttributes & 0x3) == 0)
130	{
131	Log(("vusb: map message pipe on address %u\n", i8Addr));
132	pPipe->in = pEndPtDesc;
133	pPipe->out = pEndPtDesc;
134	}
135	else if (pEndPtDesc->Core.bEndpointAddress & 0x80)
136	{
137	Log(("vusb: map input pipe on address %u\n", i8Addr));
138	pPipe->in = pEndPtDesc;
139	}
140	else
141	{
142	Log(("vusb: map output pipe on address %u\n", i8Addr));
143	pPipe->out = pEndPtDesc;
144	}
145
146	if (pPipe->pCtrl)
147	{
148	vusbMsgFreeExtraData(pPipe->pCtrl);
149	pPipe->pCtrl = NULL;
150	}
151	}
152
153	static void unmap_endpoint(PVUSBDEV pDev, PCVUSBDESCENDPOINTEX pEndPtDesc)
154	{
155	uint8_t EndPt = pEndPtDesc->Core.bEndpointAddress & 0xF;
156	PVUSBPIPE pPipe = &pDev->aPipes[EndPt];
157	LogFlow(("unmap_endpoint: pDev=%p[%s] pEndPtDesc=%p{.bEndpointAddress=%#x, .bmAttributes=%#x} p=%p stage %s->SETUP\n",
158	pDev, pDev->pUsbIns->pszName, pEndPtDesc, pEndPtDesc->Core.bEndpointAddress, pEndPtDesc->Core.bmAttributes,
159	pPipe, g_apszCtlStates[pPipe->pCtrl ? pPipe->pCtrl->enmStage : 3]));
160
161	if ((pEndPtDesc->Core.bmAttributes & 0x3) == 0)
162	{
163	Log(("vusb: unmap MSG pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
164	pPipe->in = NULL;
165	pPipe->out = NULL;
166	}
167	else if (pEndPtDesc->Core.bEndpointAddress & 0x80)
168	{
169	Log(("vusb: unmap IN pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
170	pPipe->in = NULL;
171	}
172	else
173	{
174	Log(("vusb: unmap OUT pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
175	pPipe->out = NULL;
176	}
177
178	if (pPipe->pCtrl)
179	{
180	vusbMsgFreeExtraData(pPipe->pCtrl);
181	pPipe->pCtrl = NULL;
182	}
183	}
184
185	static void map_interface(PVUSBDEV pDev, PCVUSBDESCINTERFACEEX pIfDesc)
186	{
187	LogFlow(("map_interface: pDev=%p[%s] pIfDesc=%p:{.iInterface=%d, .bAlternateSetting=%d}\n",
188	pDev, pDev->pUsbIns->pszName, pIfDesc, pIfDesc->Core.iInterface, pIfDesc->Core.bAlternateSetting));
189
190	for (unsigned i = 0; i < pIfDesc->Core.bNumEndpoints; i++)
191	{
192	if ((pIfDesc->paEndpoints[i].Core.bEndpointAddress & 0xF) == VUSB_PIPE_DEFAULT)
193	Log(("vusb: Endpoint 0x%x on interface %u.%u tried to override the default message pipe!!!\n",
194	pIfDesc->paEndpoints[i].Core.bEndpointAddress, pIfDesc->Core.bInterfaceNumber, pIfDesc->Core.bAlternateSetting));
195	else
196	vusbDevMapEndpoint(pDev, &pIfDesc->paEndpoints[i]);
197	}
198	}
199
200
201	/**
202	* Worker that resets the pipe data on select config and detach.
203	*
204	* This leaves the critical section unmolested
205	*
206	* @param pPipe The pipe which data should be reset.
207	*/
208	static void vusbDevResetPipeData(PVUSBPIPE pPipe)
209	{
210	vusbMsgFreeExtraData(pPipe->pCtrl);
211	pPipe->pCtrl = NULL;
212
213	RT_ZERO(pPipe->in);
214	RT_ZERO(pPipe->out);
215	pPipe->async = 0;
216	}
217
218
219	bool vusbDevDoSelectConfig(PVUSBDEV pDev, PCVUSBDESCCONFIGEX pCfgDesc)
220	{
221	LogFlow(("vusbDevDoSelectConfig: pDev=%p[%s] pCfgDesc=%p:{.iConfiguration=%d}\n",
222	pDev, pDev->pUsbIns->pszName, pCfgDesc, pCfgDesc->Core.iConfiguration));
223
224	/*
225	* Clean up all pipes and interfaces.
226	*/
227	unsigned i;
228	for (i = 0; i < VUSB_PIPE_MAX; i++)
229	if (i != VUSB_PIPE_DEFAULT)
230	vusbDevResetPipeData(&pDev->aPipes[i]);
231	memset(pDev->paIfStates, 0, pCfgDesc->Core.bNumInterfaces * sizeof(pDev->paIfStates[0]));
232
233	/*
234	* Map in the default setting for every interface.
235	*/
236	for (i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
237	{
238	PCVUSBINTERFACE pIf;
239	struct vusb_interface_state *pIfState;
240
241	pIf = &pCfgDesc->paIfs[i];
242	pIfState = &pDev->paIfStates[i];
243	pIfState->pIf = pIf;
244
245	/*
246	* Find the 0 setting, if it is not present we just use
247	* the lowest numbered one.
248	*/
249	for (uint32_t j = 0; j < pIf->cSettings; j++)
250	{
251	if ( !pIfState->pCurIfDesc
252	\|\| pIf->paSettings[j].Core.bAlternateSetting < pIfState->pCurIfDesc->Core.bAlternateSetting)
253	pIfState->pCurIfDesc = &pIf->paSettings[j];
254	if (pIfState->pCurIfDesc->Core.bAlternateSetting == 0)
255	break;
256	}
257
258	if (pIfState->pCurIfDesc)
259	map_interface(pDev, pIfState->pCurIfDesc);
260	}
261
262	pDev->pCurCfgDesc = pCfgDesc;
263
264	if (pCfgDesc->Core.bmAttributes & 0x40)
265	pDev->u16Status \|= (1 << VUSB_DEV_SELF_POWERED);
266	else
267	pDev->u16Status &= ~(1 << VUSB_DEV_SELF_POWERED);
268
269	return true;
270	}
271
272	/**
273	* Standard device request: SET_CONFIGURATION
274	* @returns success indicator.
275	*/
276	static bool vusbDevStdReqSetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
277	{
278	RT_NOREF(EndPt, pbBuf, pcbBuf);
279	unsigned iCfg = pSetup->wValue & 0xff;
280
281	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
282	{
283	Log(("vusb: error: %s: SET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
284	return false;
285	}
286
287	/*
288	* Check that the device is in a valid state.
289	* (The caller has already checked that it's not being reset.)
290	*/
291	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
292	if (enmState == VUSB_DEVICE_STATE_DEFAULT)
293	{
294	LogFlow(("vusbDevStdReqSetConfig: %s: default dev state !!?\n", pDev->pUsbIns->pszName));
295	return false;
296	}
297
298	PCVUSBDESCCONFIGEX pNewCfgDesc = vusbDevFindCfgDesc(pDev, iCfg);
299	if (!pNewCfgDesc)
300	{
301	Log(("vusb: error: %s: config %i not found !!!\n", pDev->pUsbIns->pszName, iCfg));
302	return false;
303	}
304
305	if (iCfg == 0)
306	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
307	else
308	vusbDevSetState(pDev, VUSB_DEVICE_STATE_CONFIGURED);
309	if (pDev->pUsbIns->pReg->pfnUsbSetConfiguration)
310	{
311	RTCritSectEnter(&pDev->pHub->CritSectDevices);
312	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetConfiguration, 5,
313	pDev->pUsbIns, pNewCfgDesc->Core.bConfigurationValue,
314	pDev->pCurCfgDesc, pDev->paIfStates, pNewCfgDesc);
315	RTCritSectLeave(&pDev->pHub->CritSectDevices);
316	if (RT_FAILURE(rc))
317	{
318	Log(("vusb: error: %s: failed to set config %i (%Rrc) !!!\n", pDev->pUsbIns->pszName, iCfg, rc));
319	return false;
320	}
321	}
322	Log(("vusb: %p[%s]: SET_CONFIGURATION: Selected config %u\n", pDev, pDev->pUsbIns->pszName, iCfg));
323	return vusbDevDoSelectConfig(pDev, pNewCfgDesc);
324	}
325
326
327	/**
328	* Standard device request: GET_CONFIGURATION
329	* @returns success indicator.
330	*/
331	static bool vusbDevStdReqGetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
332	{
333	RT_NOREF(EndPt);
334	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
335	{
336	Log(("vusb: error: %s: GET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
337	return false;
338	}
339
340	/*
341	* Check that the device is in a valid state.
342	* (The caller has already checked that it's not being reset.)
343	*/
344	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
345	if ( enmState != VUSB_DEVICE_STATE_CONFIGURED
346	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
347	{
348	LogFlow(("vusbDevStdReqGetConfig: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
349	return false;
350	}
351
352	if (*pcbBuf < 1)
353	{
354	LogFlow(("vusbDevStdReqGetConfig: %s: no space for data!\n", pDev->pUsbIns->pszName));
355	return true;
356	}
357
358	uint8_t iCfg;
359	if (enmState == VUSB_DEVICE_STATE_ADDRESS)
360	iCfg = 0;
361	else
362	iCfg = pDev->pCurCfgDesc->Core.bConfigurationValue;
363
364	*pbBuf = iCfg;
365	*pcbBuf = 1;
366	LogFlow(("vusbDevStdReqGetConfig: %s: returns iCfg=%d\n", pDev->pUsbIns->pszName, iCfg));
367	return true;
368	}
369
370	/**
371	* Standard device request: GET_INTERFACE
372	* @returns success indicator.
373	*/
374	static bool vusbDevStdReqGetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
375	{
376	RT_NOREF(EndPt);
377	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
378	{
379	Log(("vusb: error: %s: GET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
380	return false;
381	}
382
383	/*
384	* Check that the device is in a valid state.
385	* (The caller has already checked that it's not being reset.)
386	*/
387	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
388	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
389	{
390	LogFlow(("vusbDevStdReqGetInterface: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
391	return false;
392	}
393
394	if (*pcbBuf < 1)
395	{
396	LogFlow(("vusbDevStdReqGetInterface: %s: no space for data!\n", pDev->pUsbIns->pszName));
397	return true;
398	}
399
400	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
401	{
402	PCVUSBDESCINTERFACEEX pIfDesc = pDev->paIfStates[i].pCurIfDesc;
403	if ( pIfDesc
404	&& pSetup->wIndex == pIfDesc->Core.bInterfaceNumber)
405	{
406	*pbBuf = pIfDesc->Core.bAlternateSetting;
407	*pcbBuf = 1;
408	Log(("vusb: %s: GET_INTERFACE: %u.%u\n", pDev->pUsbIns->pszName, pIfDesc->Core.bInterfaceNumber, *pbBuf));
409	return true;
410	}
411	}
412
413	Log(("vusb: error: %s: GET_INTERFACE - unknown iface %u !!!\n", pDev->pUsbIns->pszName, pSetup->wIndex));
414	return false;
415	}
416
417	/**
418	* Standard device request: SET_INTERFACE
419	* @returns success indicator.
420	*/
421	static bool vusbDevStdReqSetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
422	{
423	RT_NOREF(EndPt, pbBuf, pcbBuf);
424	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
425	{
426	Log(("vusb: error: %s: SET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
427	return false;
428	}
429
430	/*
431	* Check that the device is in a valid state.
432	* (The caller has already checked that it's not being reset.)
433	*/
434	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
435	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
436	{
437	LogFlow(("vusbDevStdReqSetInterface: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
438	return false;
439	}
440
441	/*
442	* Find the interface.
443	*/
444	uint8_t iIf = pSetup->wIndex;
445	PVUSBINTERFACESTATE pIfState = vusbDevFindIfState(pDev, iIf);
446	if (!pIfState)
447	{
448	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find interface %u !!!\n", pDev->pUsbIns->pszName, iIf));
449	return false;
450	}
451	uint8_t iAlt = pSetup->wValue;
452	PCVUSBDESCINTERFACEEX pIfDesc = vusbDevFindAltIfDesc(pIfState, iAlt);
453	if (!pIfDesc)
454	{
455	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u !!!\n", pDev->pUsbIns->pszName, iIf, iAlt));
456	return false;
457	}
458
459	if (pDev->pUsbIns->pReg->pfnUsbSetInterface)
460	{
461	RTCritSectEnter(&pDev->pHub->CritSectDevices);
462	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetInterface, 3, pDev->pUsbIns, iIf, iAlt);
463	RTCritSectLeave(&pDev->pHub->CritSectDevices);
464	if (RT_FAILURE(rc))
465	{
466	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u (%Rrc)\n", pDev->pUsbIns->pszName, iIf, iAlt, rc));
467	return false;
468	}
469	}
470
471	for (unsigned i = 0; i < pIfState->pCurIfDesc->Core.bNumEndpoints; i++)
472	unmap_endpoint(pDev, &pIfState->pCurIfDesc->paEndpoints[i]);
473
474	Log(("vusb: SET_INTERFACE: Selected %u.%u\n", iIf, iAlt));
475
476	map_interface(pDev, pIfDesc);
477	pIfState->pCurIfDesc = pIfDesc;
478
479	return true;
480	}
481
482	/**
483	* Standard device request: SET_ADDRESS
484	* @returns success indicator.
485	*/
486	static bool vusbDevStdReqSetAddress(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
487	{
488	RT_NOREF(EndPt, pbBuf, pcbBuf);
489	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
490	{
491	Log(("vusb: error: %s: SET_ADDRESS - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
492	return false;
493	}
494
495	/*
496	* Check that the device is in a valid state.
497	* (The caller has already checked that it's not being reset.)
498	*/
499	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
500	if ( enmState != VUSB_DEVICE_STATE_DEFAULT
501	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
502	{
503	LogFlow(("vusbDevStdReqSetAddress: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
504	return false;
505	}
506
507	pDev->u8NewAddress = pSetup->wValue;
508	return true;
509	}
510
511	/**
512	* Standard device request: CLEAR_FEATURE
513	* @returns success indicator.
514	*
515	* @remark This is only called for VUSB_TO_ENDPOINT && ep == 0 && wValue == ENDPOINT_HALT.
516	* All other cases of CLEAR_FEATURE is handled in the normal async/sync manner.
517	*/
518	static bool vusbDevStdReqClearFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
519	{
520	RT_NOREF(pbBuf, pcbBuf);
521	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
522	{
523	case VUSB_TO_DEVICE:
524	Log(("vusb: ClearFeature: dev(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
525	break;
526	case VUSB_TO_INTERFACE:
527	Log(("vusb: ClearFeature: iface(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
528	break;
529	case VUSB_TO_ENDPOINT:
530	Log(("vusb: ClearFeature: ep(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
531	if ( !EndPt /* Default control pipe only */
532	&& pSetup->wValue == 0 /* ENDPOINT_HALT */
533	&& pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint)
534	{
535	RTCritSectEnter(&pDev->pHub->CritSectDevices);
536	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint,
537	2, pDev->pUsbIns, pSetup->wIndex);
538	RTCritSectLeave(&pDev->pHub->CritSectDevices);
539	return RT_SUCCESS(rc);
540	}
541	break;
542	default:
543	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
544	break;
545	}
546
547	AssertMsgFailed(("Invalid safe check !!!\n"));
548	return false;
549	}
550
551	/**
552	* Standard device request: SET_FEATURE
553	* @returns success indicator.
554	*/
555	static bool vusbDevStdReqSetFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
556	{
557	RT_NOREF(pDev, EndPt, pbBuf, pcbBuf);
558	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
559	{
560	case VUSB_TO_DEVICE:
561	Log(("vusb: SetFeature: dev(%u): selector=%u\n",
562	pSetup->wIndex, pSetup->wValue));
563	break;
564	case VUSB_TO_INTERFACE:
565	Log(("vusb: SetFeature: if(%u): selector=%u\n",
566	pSetup->wIndex, pSetup->wValue));
567	break;
568	case VUSB_TO_ENDPOINT:
569	Log(("vusb: SetFeature: ep(%u): selector=%u\n",
570	pSetup->wIndex, pSetup->wValue));
571	break;
572	default:
573	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
574	return false;
575	}
576	AssertMsgFailed(("This stuff is bogus\n"));
577	return false;
578	}
579
580	static bool vusbDevStdReqGetStatus(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
581	{
582	RT_NOREF(EndPt);
583	if (*pcbBuf != 2)
584	{
585	LogFlow(("vusbDevStdReqGetStatus: %s: buffer is too small! (%d)\n", pDev->pUsbIns->pszName, *pcbBuf));
586	return false;
587	}
588
589	uint16_t u16Status;
590	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
591	{
592	case VUSB_TO_DEVICE:
593	u16Status = pDev->u16Status;
594	LogFlow(("vusbDevStdReqGetStatus: %s: device status %#x (%d)\n", pDev->pUsbIns->pszName, u16Status, u16Status));
595	break;
596	case VUSB_TO_INTERFACE:
597	u16Status = 0;
598	LogFlow(("vusbDevStdReqGetStatus: %s: bogus interface status request!!\n", pDev->pUsbIns->pszName));
599	break;
600	case VUSB_TO_ENDPOINT:
601	u16Status = 0;
602	LogFlow(("vusbDevStdReqGetStatus: %s: bogus endpoint status request!!\n", pDev->pUsbIns->pszName));
603	break;
604	default:
605	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
606	return false;
607	}
608
609	(uint16_t )pbBuf = u16Status;
610	return true;
611	}
612
613
614	/**
615	* Finds a cached string.
616	*
617	* @returns Pointer to the cached string if found. NULL if not.
618	* @param paLanguages The languages to search.
619	* @param cLanguages The number of languages in the table.
620	* @param idLang The language ID.
621	* @param iString The string index.
622	*/
623	static PCPDMUSBDESCCACHESTRING FindCachedString(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
624	uint16_t idLang, uint8_t iString)
625	{
626	/** @todo binary lookups! */
627	unsigned iCurLang = cLanguages;
628	while (iCurLang-- > 0)
629	if (paLanguages[iCurLang].idLang == idLang)
630	{
631	PCPDMUSBDESCCACHESTRING paStrings = paLanguages[iCurLang].paStrings;
632	unsigned iCurStr = paLanguages[iCurLang].cStrings;
633	while (iCurStr-- > 0)
634	if (paStrings[iCurStr].idx == iString)
635	return &paStrings[iCurStr];
636	break;
637	}
638	return NULL;
639	}
640
641
642	/** Macro for copying descriptor data. */
643	#define COPY_DATA(pbDst, cbLeft, pvSrc, cbSrc) \
644	do { \
645	uint32_t cbSrc_ = cbSrc; \
646	uint32_t cbCopy = RT_MIN(cbLeft, cbSrc_); \
647	if (cbCopy) \
648	memcpy(pbBuf, pvSrc, cbCopy); \
649	cbLeft -= cbCopy; \
650	if (!cbLeft) \
651	return; \
652	pbBuf += cbCopy; \
653	} while (0)
654
655	/**
656	* Internal function for reading the language IDs.
657	*/
658	static void ReadCachedStringDesc(PCPDMUSBDESCCACHESTRING pString, uint8_t pbBuf, uint32_t pcbBuf)
659	{
660	uint32_t cbLeft = *pcbBuf;
661
662	RTUTF16 wsz[128]; /* 128-1 => bLength=0xff */
663	PRTUTF16 pwsz = wsz;
664	size_t cwc;
665	int rc = RTStrToUtf16Ex(pString->psz, RT_ELEMENTS(wsz) - 1, &pwsz, RT_ELEMENTS(wsz), &cwc);
666	if (RT_FAILURE(rc))
667	{
668	AssertRC(rc);
669	wsz[0] = 'e';
670	wsz[1] = 'r';
671	wsz[2] = 'r';
672	cwc = 3;
673	}
674
675	VUSBDESCSTRING StringDesc;
676	StringDesc.bLength = (uint8_t)(sizeof(StringDesc) + cwc * sizeof(RTUTF16));
677	StringDesc.bDescriptorType = VUSB_DT_STRING;
678	COPY_DATA(pbBuf, cbLeft, &StringDesc, sizeof(StringDesc));
679	COPY_DATA(pbBuf, cbLeft, wsz, (uint32_t)cwc * sizeof(RTUTF16));
680
681	/* updated the size of the output buffer. */
682	*pcbBuf -= cbLeft;
683	}
684
685
686	/**
687	* Internal function for reading the language IDs.
688	*/
689	static void ReadCachedLangIdDesc(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
690	uint8_t pbBuf, uint32_t pcbBuf)
691	{
692	uint32_t cbLeft = *pcbBuf;
693
694	VUSBDESCLANGID LangIdDesc;
695	size_t cbDesc = sizeof(LangIdDesc) + cLanguages * sizeof(paLanguages[0].idLang);
696	LangIdDesc.bLength = (uint8_t)RT_MIN(0xff, cbDesc);
697	LangIdDesc.bDescriptorType = VUSB_DT_STRING;
698	COPY_DATA(pbBuf, cbLeft, &LangIdDesc, sizeof(LangIdDesc));
699
700	unsigned iLanguage = cLanguages;
701	while (iLanguage-- > 0)
702	COPY_DATA(pbBuf, cbLeft, &paLanguages[iLanguage].idLang, sizeof(paLanguages[iLanguage].idLang));
703
704	/* updated the size of the output buffer. */
705	*pcbBuf -= cbLeft;
706	}
707
708
709	/**
710	* Internal function which performs a descriptor read on the cached descriptors.
711	*/
712	static void ReadCachedConfigDesc(PCVUSBDESCCONFIGEX pCfgDesc, uint8_t pbBuf, uint32_t pcbBuf)
713	{
714	uint32_t cbLeft = *pcbBuf;
715
716	/*
717	* Make a copy of the config descriptor and calculate the wTotalLength field.
718	*/
719	VUSBDESCCONFIG CfgDesc;
720	memcpy(&CfgDesc, pCfgDesc, VUSB_DT_CONFIG_MIN_LEN);
721	uint32_t cbTotal = 0;
722	cbTotal += pCfgDesc->Core.bLength;
723	cbTotal += pCfgDesc->cbClass;
724	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
725	{
726	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
727	for (uint32_t j = 0; j < pIf->cSettings; j++)
728	{
729	cbTotal += pIf->paSettings[j].cbIAD;
730	cbTotal += pIf->paSettings[j].Core.bLength;
731	cbTotal += pIf->paSettings[j].cbClass;
732	for (unsigned k = 0; k < pIf->paSettings[j].Core.bNumEndpoints; k++)
733	{
734	cbTotal += pIf->paSettings[j].paEndpoints[k].Core.bLength;
735	cbTotal += pIf->paSettings[j].paEndpoints[k].cbSsepc;
736	cbTotal += pIf->paSettings[j].paEndpoints[k].cbClass;
737	}
738	}
739	}
740	CfgDesc.wTotalLength = RT_H2LE_U16(cbTotal);
741
742	/*
743	* Copy the config descriptor
744	*/
745	COPY_DATA(pbBuf, cbLeft, &CfgDesc, VUSB_DT_CONFIG_MIN_LEN);
746	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvMore, pCfgDesc->Core.bLength - VUSB_DT_CONFIG_MIN_LEN);
747	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvClass, pCfgDesc->cbClass);
748
749	/*
750	* Copy out all the interfaces for this configuration
751	*/
752	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
753	{
754	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
755	for (uint32_t j = 0; j < pIf->cSettings; j++)
756	{
757	PCVUSBDESCINTERFACEEX pIfDesc = &pIf->paSettings[j];
758
759	COPY_DATA(pbBuf, cbLeft, pIfDesc->pIAD, pIfDesc->cbIAD);
760	COPY_DATA(pbBuf, cbLeft, pIfDesc, VUSB_DT_INTERFACE_MIN_LEN);
761	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvMore, pIfDesc->Core.bLength - VUSB_DT_INTERFACE_MIN_LEN);
762	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvClass, pIfDesc->cbClass);
763
764	/*
765	* Copy out all the endpoints for this interface
766	*/
767	for (unsigned k = 0; k < pIfDesc->Core.bNumEndpoints; k++)
768	{
769	VUSBDESCENDPOINT EndPtDesc;
770	memcpy(&EndPtDesc, &pIfDesc->paEndpoints[k], VUSB_DT_ENDPOINT_MIN_LEN);
771	EndPtDesc.wMaxPacketSize = RT_H2LE_U16(EndPtDesc.wMaxPacketSize);
772
773	COPY_DATA(pbBuf, cbLeft, &EndPtDesc, VUSB_DT_ENDPOINT_MIN_LEN);
774	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvMore, EndPtDesc.bLength - VUSB_DT_ENDPOINT_MIN_LEN);
775	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvSsepc, pIfDesc->paEndpoints[k].cbSsepc);
776	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvClass, pIfDesc->paEndpoints[k].cbClass);
777	}
778	}
779	}
780
781	/* updated the size of the output buffer. */
782	*pcbBuf -= cbLeft;
783	}
784
785	/**
786	* Internal function which performs a descriptor read on the cached descriptors.
787	*/
788	static void ReadCachedDeviceDesc(PCVUSBDESCDEVICE pDevDesc, uint8_t pbBuf, uint32_t pcbBuf)
789	{
790	uint32_t cbLeft = *pcbBuf;
791
792	/*
793	* Duplicate the device description and update some fields we keep in cpu type.
794	*/
795	Assert(sizeof(VUSBDESCDEVICE) == 18);
796	VUSBDESCDEVICE DevDesc = *pDevDesc;
797	DevDesc.bcdUSB = RT_H2LE_U16(DevDesc.bcdUSB);
798	DevDesc.idVendor = RT_H2LE_U16(DevDesc.idVendor);
799	DevDesc.idProduct = RT_H2LE_U16(DevDesc.idProduct);
800	DevDesc.bcdDevice = RT_H2LE_U16(DevDesc.bcdDevice);
801
802	COPY_DATA(pbBuf, cbLeft, &DevDesc, sizeof(DevDesc));
803	COPY_DATA(pbBuf, cbLeft, pDevDesc + 1, pDevDesc->bLength - sizeof(DevDesc));
804
805	/* updated the size of the output buffer. */
806	*pcbBuf -= cbLeft;
807	}
808
809	#undef COPY_DATA
810
811	/**
812	* Checks whether a descriptor read can be satisfied by reading from the
813	* descriptor cache or has to be passed to the device.
814	* If we have descriptors cached, it is generally safe to satisfy descriptor reads
815	* from the cache. As usual, there is broken USB software and hardware out there
816	* and guests might try to read a nonexistent desciptor (out of range index for
817	* string or configuration descriptor) and rely on it not failing.
818	* Since we cannot very well guess if such invalid requests should really succeed,
819	* and what exactly should happen if they do, we pass such requests to the device.
820	* If the descriptor was cached because it was edited, and the guest bypasses the
821	* edited cache by reading a descriptor with an invalid index, it is probably
822	* best to smash the USB device with a large hammer.
823	*
824	* See @bugref{10016}.
825	*
826	* @returns false if request must be passed to device.
827	*/
828	bool vusbDevIsDescriptorInCache(PVUSBDEV pDev, PCVUSBSETUP pSetup)
829	{
830	unsigned int iIndex = (pSetup->wValue & 0xff);
831	Assert(pSetup->bRequest == VUSB_REQ_GET_DESCRIPTOR);
832
833	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) == VUSB_TO_DEVICE)
834	{
835	if (pDev->pDescCache->fUseCachedDescriptors)
836	{
837	switch (pSetup->wValue >> 8)
838	{
839	case VUSB_DT_DEVICE:
840	if (iIndex == 0)
841	return true;
842
843	LogRelMax(10, ("VUSB: %s: Warning: Reading device descriptor with non-zero index %u (wLength=%u), passing request to device\n",
844	pDev->pUsbIns->pszName, iIndex, pSetup->wLength));
845	break;
846
847	case VUSB_DT_CONFIG:
848	if (iIndex < pDev->pDescCache->pDevice->bNumConfigurations)
849	return true;
850
851	LogRelMax(10, ("VUSB: %s: Warning: Reading configuration descriptor invalid index %u (bNumConfigurations=%u, wLength=%u), passing request to device\n",
852	pDev->pUsbIns->pszName, iIndex, pDev->pDescCache->pDevice->bNumConfigurations, pSetup->wLength));
853	break;
854
855	case VUSB_DT_STRING:
856	if (pDev->pDescCache->fUseCachedStringsDescriptors)
857	{
858	if (pSetup->wIndex == 0) /* Language IDs. */
859	return true;
860
861	if (FindCachedString(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages,
862	pSetup->wIndex, iIndex))
863	return true;
864	}
865	break;
866
867	default:
868	break;
869	}
870	Log(("VUSB: %s: Descriptor not cached: type=%u descidx=%u lang=%u len=%u, passing request to device\n",
871	pDev->pUsbIns->pszName, pSetup->wValue >> 8, iIndex, pSetup->wIndex, pSetup->wLength));
872	}
873	}
874	return false;
875	}
876
877
878	/**
879	* Standard device request: GET_DESCRIPTOR
880	* @returns success indicator.
881	*/
882	static bool vusbDevStdReqGetDescriptor(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
883	{
884	RT_NOREF(EndPt);
885	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) == VUSB_TO_DEVICE)
886	{
887	switch (pSetup->wValue >> 8)
888	{
889	case VUSB_DT_DEVICE:
890	ReadCachedDeviceDesc(pDev->pDescCache->pDevice, pbBuf, pcbBuf);
891	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of device descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
892	return true;
893
894	case VUSB_DT_CONFIG:
895	{
896	unsigned int iIndex = (pSetup->wValue & 0xff);
897	if (iIndex >= pDev->pDescCache->pDevice->bNumConfigurations)
898	{
899	LogFlow(("vusbDevStdReqGetDescriptor: %s: iIndex=%u >= bNumConfigurations=%d !!!\n",
900	pDev->pUsbIns->pszName, iIndex, pDev->pDescCache->pDevice->bNumConfigurations));
901	return false;
902	}
903	ReadCachedConfigDesc(&pDev->pDescCache->paConfigs[iIndex], pbBuf, pcbBuf);
904	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of config descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
905	return true;
906	}
907
908	case VUSB_DT_STRING:
909	{
910	if (pSetup->wIndex == 0)
911	{
912	ReadCachedLangIdDesc(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages, pbBuf, pcbBuf);
913	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of language ID (string) descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
914	return true;
915	}
916	PCPDMUSBDESCCACHESTRING pString;
917	pString = FindCachedString(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages,
918	pSetup->wIndex, pSetup->wValue & 0xff);
919	if (pString)
920	{
921	ReadCachedStringDesc(pString, pbBuf, pcbBuf);
922	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of string descriptors \"%s\"\n",
923	pDev->pUsbIns->pszName, *pcbBuf, pString->psz));
924	return true;
925	}
926	break;
927	}
928
929	default:
930	break;
931	}
932	}
933	Log(("vusb: %s: warning: unknown descriptor: type=%u descidx=%u lang=%u len=%u!!!\n",
934	pDev->pUsbIns->pszName, pSetup->wValue >> 8, pSetup->wValue & 0xff, pSetup->wIndex, pSetup->wLength));
935	return false;
936	}
937
938
939	/**
940	* Service the standard USB requests.
941	*
942	* Devices may call this from controlmsg() if you want vusb core to handle your standard
943	* request, it's not necessary - you could handle them manually
944	*
945	* @param pDev The device.
946	* @param EndPoint The endpoint.
947	* @param pSetup Pointer to the setup request structure.
948	* @param pvBuf Buffer?
949	* @param pcbBuf ?
950	*/
951	bool vusbDevStandardRequest(PVUSBDEV pDev, int EndPoint, PVUSBSETUP pSetup, void pvBuf, uint32_t pcbBuf)
952	{
953	static bool (* const s_apfnStdReq[VUSB_REQ_MAX])(PVUSBDEV, int, PVUSBSETUP, uint8_t , uint32_t ) =
954	{
955	vusbDevStdReqGetStatus,
956	vusbDevStdReqClearFeature,
957	NULL,
958	vusbDevStdReqSetFeature,
959	NULL,
960	vusbDevStdReqSetAddress,
961	vusbDevStdReqGetDescriptor,
962	NULL,
963	vusbDevStdReqGetConfig,
964	vusbDevStdReqSetConfig,
965	vusbDevStdReqGetInterface,
966	vusbDevStdReqSetInterface,
967	NULL /* for iso */
968	};
969
970	/*
971	* Check that the device is in a valid state.
972	*/
973	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
974	if (enmState == VUSB_DEVICE_STATE_RESET)
975	{
976	LogRel(("VUSB: %s: standard control message ignored, the device is resetting\n", pDev->pUsbIns->pszName));
977	return false;
978	}
979
980	/*
981	* Do the request if it's one we want to deal with.
982	*/
983	if ( pSetup->bRequest >= VUSB_REQ_MAX
984	\|\| !s_apfnStdReq[pSetup->bRequest])
985	{
986	Log(("vusb: warning: standard req not implemented: message %u: val=%u idx=%u len=%u !!!\n",
987	pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
988	return false;
989	}
990
991	return s_apfnStdReq[pSetup->bRequest](pDev, EndPoint, pSetup, (uint8_t *)pvBuf, pcbBuf);
992	}
993
994
995	/**
996	* Sets the address of a device.
997	*
998	* Called by status_completion() and vusbDevResetWorker().
999	*/
1000	void vusbDevSetAddress(PVUSBDEV pDev, uint8_t u8Address)
1001	{
1002	LogFlow(("vusbDevSetAddress: pDev=%p[%s]/%i u8Address=%#x\n",
1003	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1004
1005	/*
1006	* Check that the device is in a valid state.
1007	*/
1008	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1009	VUSBDEV_ASSERT_VALID_STATE(enmState);
1010	if ( enmState == VUSB_DEVICE_STATE_ATTACHED
1011	\|\| enmState == VUSB_DEVICE_STATE_DETACHED)
1012	{
1013	LogFlow(("vusbDevSetAddress: %s: fails because %d < POWERED\n", pDev->pUsbIns->pszName, pDev->enmState));
1014	return;
1015	}
1016	if (enmState == VUSB_DEVICE_STATE_RESET)
1017	{
1018	LogRel(("VUSB: %s: set address ignored, the device is resetting\n", pDev->pUsbIns->pszName));
1019	return;
1020	}
1021
1022	/*
1023	* Ok, get on with it.
1024	*/
1025	if (pDev->u8Address == u8Address)
1026	return;
1027
1028	/** @todo The following logic belongs to the roothub and should actually be in that file. */
1029	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1030	AssertPtrReturnVoid(pRh);
1031
1032	RTCritSectEnter(&pRh->CritSectDevices);
1033
1034	/* Remove the device from the current address. */
1035	if (pDev->u8Address != VUSB_INVALID_ADDRESS)
1036	{
1037	Assert(pRh->apDevByAddr[pDev->u8Address] == pDev);
1038	pRh->apDevByAddr[pDev->u8Address] = NULL;
1039	}
1040
1041	if (u8Address == VUSB_DEFAULT_ADDRESS)
1042	{
1043	PVUSBDEV pDevDef = pRh->apDevByAddr[VUSB_DEFAULT_ADDRESS];
1044
1045	if (pDevDef)
1046	{
1047	pDevDef->u8Address = VUSB_INVALID_ADDRESS;
1048	pDevDef->u8NewAddress = VUSB_INVALID_ADDRESS;
1049	vusbDevSetStateCmp(pDevDef, VUSB_DEVICE_STATE_POWERED, VUSB_DEVICE_STATE_DEFAULT);
1050	Log(("2 DEFAULT ADDRS\n"));
1051	}
1052
1053	pRh->apDevByAddr[VUSB_DEFAULT_ADDRESS] = pDev;
1054	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1055	}
1056	else
1057	{
1058	Assert(!pRh->apDevByAddr[u8Address]);
1059	pRh->apDevByAddr[u8Address] = pDev;
1060	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
1061	}
1062
1063	pDev->u8Address = u8Address;
1064	RTCritSectLeave(&pRh->CritSectDevices);
1065
1066	Log(("vusb: %p[%s]/%i: Assigned address %u\n",
1067	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1068	}
1069
1070
1071	static DECLCALLBACK(int) vusbDevCancelAllUrbsWorker(PVUSBDEV pDev, bool fDetaching)
1072	{
1073	/*
1074	* Iterate the URBs and cancel them.
1075	*/
1076	PVUSBURBVUSB pVUsbUrb, pVUsbUrbNext;
1077	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1078	{
1079	PVUSBURB pUrb = pVUsbUrb->pUrb;
1080
1081	Assert(pUrb->pVUsb->pDev == pDev);
1082
1083	LogFlow(("%s: vusbDevCancelAllUrbs: CANCELING URB\n", pUrb->pszDesc));
1084	int rc = vusbUrbCancelWorker(pUrb, CANCELMODE_FAIL);
1085	AssertRC(rc);
1086	}
1087
1088	/*
1089	* Reap any URBs which became ripe during cancel now.
1090	*/
1091	RTCritSectEnter(&pDev->CritSectAsyncUrbs);
1092	unsigned cReaped;
1093	do
1094	{
1095	cReaped = 0;
1096	pVUsbUrb = RTListGetFirst(&pDev->LstAsyncUrbs, VUSBURBVUSBINT, NdLst);
1097	while (pVUsbUrb)
1098	{
1099	PVUSBURBVUSB pNext = RTListGetNext(&pDev->LstAsyncUrbs, pVUsbUrb, VUSBURBVUSBINT, NdLst);
1100	PVUSBURB pUrb = pVUsbUrb->pUrb;
1101	Assert(pUrb->pVUsb->pDev == pDev);
1102
1103	PVUSBURB pRipe = NULL;
1104	if (pUrb->enmState == VUSBURBSTATE_REAPED)
1105	pRipe = pUrb;
1106	else if (pUrb->enmState == VUSBURBSTATE_CANCELLED)
1107	#ifdef RT_OS_WINDOWS /** @todo Windows doesn't do cancelling, thus this kludge to prevent really bad
1108	* things from happening if we leave a pending URB behinds. */
1109	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 1500 : 0 /ms/);
1110	#else
1111	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 10 : 0 /ms/);
1112	#endif
1113	else
1114	AssertMsgFailed(("pUrb=%p enmState=%d\n", pUrb, pUrb->enmState));
1115	if (pRipe)
1116	{
1117	if ( pNext
1118	&& pRipe == pNext->pUrb)
1119	pNext = RTListGetNext(&pDev->LstAsyncUrbs, pNext, VUSBURBVUSBINT, NdLst);
1120	vusbUrbRipe(pRipe);
1121	cReaped++;
1122	}
1123
1124	pVUsbUrb = pNext;
1125	}
1126	} while (cReaped > 0);
1127
1128	/*
1129	* If we're detaching, we'll have to orphan any leftover URBs.
1130	*/
1131	if (fDetaching)
1132	{
1133	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1134	{
1135	PVUSBURB pUrb = pVUsbUrb->pUrb;
1136	Assert(pUrb->pVUsb->pDev == pDev);
1137
1138	AssertMsgFailed(("%s: Leaking left over URB! state=%d pDev=%p[%s]\n",
1139	pUrb->pszDesc, pUrb->enmState, pDev, pDev->pUsbIns->pszName));
1140	vusbUrbUnlink(pUrb);
1141	/* Unlink isn't enough, because boundary timer and detaching will try to reap it.
1142	* It was tested with MSD & iphone attachment to vSMP guest, if
1143	* it breaks anything, please add comment here, why we should unlink only.
1144	*/
1145	pUrb->pVUsb->pfnFree(pUrb);
1146	}
1147	}
1148	RTCritSectLeave(&pDev->CritSectAsyncUrbs);
1149	return VINF_SUCCESS;
1150	}
1151
1152	/**
1153	* Cancels and completes (with CRC failure) all async URBs pending
1154	* on a device. This is typically done as part of a reset and
1155	* before detaching a device.
1156	*
1157	* @returns nothing.
1158	* @param pDev The VUSB device instance.
1159	* @param fDetaching If set, we will unconditionally unlink (and leak)
1160	* any URBs which isn't reaped.
1161	*/
1162	DECLHIDDEN(void) vusbDevCancelAllUrbs(PVUSBDEV pDev, bool fDetaching)
1163	{
1164	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevCancelAllUrbsWorker, 2, pDev, fDetaching);
1165	AssertRC(rc);
1166	}
1167
1168
1169	static DECLCALLBACK(int) vusbDevUrbIoThread(RTTHREAD hThread, void *pvUser)
1170	{
1171	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1172
1173	/* Notify the starter that we are up and running. */
1174	RTThreadUserSignal(hThread);
1175
1176	LogFlowFunc(("Entering work loop\n"));
1177
1178	while (!ASMAtomicReadBool(&pDev->fTerminate))
1179	{
1180	if (vusbDevGetState(pDev) != VUSB_DEVICE_STATE_RESET)
1181	vusbUrbDoReapAsyncDev(pDev, RT_INDEFINITE_WAIT);
1182
1183	/* Process any URBs waiting to be cancelled first. */
1184	int rc = RTReqQueueProcess(pDev->hReqQueueSync, 0); /* Don't wait if there is nothing to do. */
1185	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT); NOREF(rc);
1186	}
1187
1188	return VINF_SUCCESS;
1189	}
1190
1191	int vusbDevUrbIoThreadWakeup(PVUSBDEV pDev)
1192	{
1193	ASMAtomicXchgBool(&pDev->fWokenUp, true);
1194	return pDev->pUsbIns->pReg->pfnWakeup(pDev->pUsbIns);
1195	}
1196
1197	/**
1198	* Create the URB I/O thread.
1199	*
1200	* @returns VBox status code.
1201	* @param pDev The VUSB device.
1202	*/
1203	int vusbDevUrbIoThreadCreate(PVUSBDEV pDev)
1204	{
1205	int rc = VINF_SUCCESS;
1206
1207	ASMAtomicXchgBool(&pDev->fTerminate, false);
1208	rc = RTThreadCreateF(&pDev->hUrbIoThread, vusbDevUrbIoThread, pDev, 0, RTTHREADTYPE_IO,
1209	RTTHREADFLAGS_WAITABLE, "USBDevIo-%d", pDev->i16Port);
1210	if (RT_SUCCESS(rc))
1211	{
1212	/* Wait for it to become active. */
1213	rc = RTThreadUserWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT);
1214	}
1215
1216	return rc;
1217	}
1218
1219	/**
1220	* Destro the URB I/O thread.
1221	*
1222	* @returns VBox status code.
1223	* @param pDev The VUSB device.
1224	*/
1225	int vusbDevUrbIoThreadDestroy(PVUSBDEV pDev)
1226	{
1227	int rc = VINF_SUCCESS;
1228	int rcThread = VINF_SUCCESS;
1229
1230	ASMAtomicXchgBool(&pDev->fTerminate, true);
1231	vusbDevUrbIoThreadWakeup(pDev);
1232
1233	rc = RTThreadWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT, &rcThread);
1234	if (RT_SUCCESS(rc))
1235	rc = rcThread;
1236
1237	pDev->hUrbIoThread = NIL_RTTHREAD;
1238
1239	return rc;
1240	}
1241
1242
1243	/**
1244	* Attaches a device to the given hub.
1245	*
1246	* @returns VBox status code.
1247	* @param pDev The device to attach.
1248	* @param pHub The roothub to attach to.
1249	*/
1250	int vusbDevAttach(PVUSBDEV pDev, PVUSBROOTHUB pHub)
1251	{
1252	AssertMsg(pDev->enmState == VUSB_DEVICE_STATE_DETACHED, ("enmState=%d\n", pDev->enmState));
1253
1254	pDev->pHub = pHub;
1255	pDev->enmState = VUSB_DEVICE_STATE_ATTACHED;
1256
1257	/* noone else ever messes with the default pipe while we are attached */
1258	vusbDevMapEndpoint(pDev, &g_Endpoint0);
1259	vusbDevDoSelectConfig(pDev, &g_Config0);
1260
1261	/* Create I/O thread and attach to the hub. */
1262	int rc = vusbDevUrbIoThreadCreate(pDev);
1263	if (RT_FAILURE(rc))
1264	{
1265	pDev->pHub = NULL;
1266	pDev->enmState = VUSB_DEVICE_STATE_DETACHED;
1267	}
1268
1269	return rc;
1270	}
1271
1272
1273	/**
1274	* Detaches a device from the hub it's attached to.
1275	*
1276	* @returns VBox status code.
1277	* @param pDev The device to detach.
1278	*
1279	* @remark This can be called in any state but reset.
1280	*/
1281	int vusbDevDetach(PVUSBDEV pDev)
1282	{
1283	LogFlow(("vusbDevDetach: pDev=%p[%s] enmState=%#x\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1284	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1285	Assert(pDev->enmState != VUSB_DEVICE_STATE_RESET);
1286
1287	/*
1288	* Destroy I/O thread and request queue last because they might still be used
1289	* when cancelling URBs.
1290	*/
1291	vusbDevUrbIoThreadDestroy(pDev);
1292
1293	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DETACHED);
1294	pDev->pHub = NULL;
1295
1296	/* Remove the configuration */
1297	pDev->pCurCfgDesc = NULL;
1298	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1299	vusbDevResetPipeData(&pDev->aPipes[i]);
1300	return VINF_SUCCESS;
1301	}
1302
1303
1304	/**
1305	* Destroys a device, detaching it from the hub if necessary.
1306	*
1307	* @param pDev The device.
1308	* @thread any.
1309	*/
1310	void vusbDevDestroy(PVUSBDEV pDev)
1311	{
1312	LogFlow(("vusbDevDestroy: pDev=%p[%s] enmState=%d\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1313
1314	RTMemFree(pDev->paIfStates);
1315
1316	PDMUsbHlpTimerDestroy(pDev->pUsbIns, pDev->hResetTimer);
1317	pDev->hResetTimer = NIL_TMTIMERHANDLE;
1318
1319	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1320	{
1321	Assert(pDev->aPipes[i].pCtrl == NULL);
1322	RTCritSectDelete(&pDev->aPipes[i].CritSectCtrl);
1323	}
1324
1325	if (pDev->hSniffer != VUSBSNIFFER_NIL)
1326	VUSBSnifferDestroy(pDev->hSniffer);
1327
1328	vusbUrbPoolDestroy(&pDev->UrbPool);
1329
1330	int rc = RTReqQueueDestroy(pDev->hReqQueueSync);
1331	AssertRC(rc);
1332	pDev->hReqQueueSync = NIL_RTREQQUEUE;
1333
1334	RTCritSectDelete(&pDev->CritSectAsyncUrbs);
1335	/* Not using vusbDevSetState() deliberately here because it would assert on the state. */
1336	pDev->enmState = VUSB_DEVICE_STATE_DESTROYED;
1337	pDev->pUsbIns->pvVUsbDev2 = NULL;
1338	RTMemFree(pDev);
1339	}
1340
1341
1342	/* -=-=-=-=-=- VUSBIDEVICE methods -=-=-=-=-=- */
1343
1344
1345	/**
1346	* The actual reset has been done, do completion on EMT.
1347	*
1348	* There are several things we have to do now, like set default
1349	* config and address, and cleanup the state of control pipes.
1350	*
1351	* It's possible that the device has a delayed destroy request
1352	* pending when we get here. This can happen for async resetting.
1353	* We deal with it here, since we're now executing on the EMT
1354	* thread and the destruction will be properly serialized now.
1355	*
1356	* @param pDev The device that is being reset.
1357	* @param rc The vusbDevResetWorker return code.
1358	* @param pfnDone The done callback specified by the caller of vusbDevReset().
1359	* @param pvUser The user argument for the callback.
1360	*/
1361	static void vusbDevResetDone(PVUSBDEV pDev, int rc, PFNVUSBRESETDONE pfnDone, void *pvUser)
1362	{
1363	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1364	Assert(pDev->enmState == VUSB_DEVICE_STATE_RESET);
1365
1366	/*
1367	* Do control pipe cleanup regardless of state and result.
1368	*/
1369	for (unsigned i = 0; i < VUSB_PIPE_MAX; i++)
1370	if (pDev->aPipes[i].pCtrl)
1371	vusbMsgResetExtraData(pDev->aPipes[i].pCtrl);
1372
1373	/*
1374	* Switch to the default state.
1375	*/
1376	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1377	pDev->u16Status = 0;
1378	vusbDevDoSelectConfig(pDev, &g_Config0);
1379	vusbDevSetAddress(pDev, VUSB_DEFAULT_ADDRESS);
1380	if (pfnDone)
1381	pfnDone(&pDev->IDevice, pDev->i16Port, rc, pvUser);
1382	}
1383
1384
1385	/**
1386	* @callback_method_impl{FNTMTIMERUSB,
1387	* Timer callback for doing reset completion.}
1388	*/
1389	static DECLCALLBACK(void) vusbDevResetDoneTimer(PPDMUSBINS pUsbIns, TMTIMERHANDLE hTimer, void *pvUser)
1390	{
1391	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1392	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)pDev->pvArgs;
1393	Assert(pDev->pUsbIns == pUsbIns);
1394	RT_NOREF(pUsbIns, hTimer);
1395
1396	AssertPtr(pArgs);
1397
1398	/*
1399	* Reset-done processing and cleanup.
1400	*/
1401	pDev->pvArgs = NULL;
1402	vusbDevResetDone(pDev, pArgs->rc, pArgs->pfnDone, pArgs->pvUser);
1403	RTMemFree(pArgs);
1404	}
1405
1406
1407	/**
1408	* Perform the actual reset.
1409	*
1410	* @thread EMT or a VUSB reset thread.
1411	*/
1412	static DECLCALLBACK(int) vusbDevResetWorker(PVUSBDEV pDev, bool fResetOnLinux, bool fUseTimer, PVUSBRESETARGS pArgs)
1413	{
1414	uint64_t const uTimerDeadline = !fUseTimer ? 0
1415	: PDMUsbHlpTimerGet(pDev->pUsbIns, pDev->hResetTimer)
1416	+ PDMUsbHlpTimerFromMilli(pDev->pUsbIns, pDev->hResetTimer, 10);
1417
1418	int rc = VINF_SUCCESS;
1419	if (pDev->pUsbIns->pReg->pfnUsbReset)
1420	rc = pDev->pUsbIns->pReg->pfnUsbReset(pDev->pUsbIns, fResetOnLinux);
1421
1422	if (pArgs)
1423	{
1424	pArgs->rc = rc;
1425	rc = VINF_SUCCESS;
1426	}
1427
1428	if (fUseTimer)
1429	{
1430	/*
1431	* We use a timer to communicate the result back to EMT.
1432	* This avoids suspend + poweroff issues, and it should give
1433	* us more accurate scheduling than making this thread sleep.
1434	*/
1435	int rc2 = PDMUsbHlpTimerSet(pDev->pUsbIns, pDev->hResetTimer, uTimerDeadline);
1436	AssertReleaseRC(rc2);
1437	}
1438
1439	LogFlow(("vusbDevResetWorker: %s: returns %Rrc\n", pDev->pUsbIns->pszName, rc));
1440	return rc;
1441	}
1442
1443
1444	/**
1445	* Resets a device.
1446	*
1447	* Since a device reset shall take at least 10ms from the guest point of view,
1448	* it must be performed asynchronously. We create a thread which performs this
1449	* operation and ensures it will take at least 10ms.
1450	*
1451	* At times - like init - a synchronous reset is required, this can be done
1452	* by passing NULL for pfnDone.
1453	*
1454	* While the device is being reset it is in the VUSB_DEVICE_STATE_RESET state.
1455	* On completion it will be in the VUSB_DEVICE_STATE_DEFAULT state if successful,
1456	* or in the VUSB_DEVICE_STATE_DETACHED state if the rest failed.
1457	*
1458	* @returns VBox status code.
1459	*
1460	* @param pDevice Pointer to the VUSB device interface.
1461	* @param fResetOnLinux Whether it's safe to reset the device(s) on a linux
1462	* host system. See discussion of logical reconnects elsewhere.
1463	* @param pfnDone Pointer to the completion routine. If NULL a synchronous
1464	* reset is preformed not respecting the 10ms.
1465	* @param pvUser Opaque user data to pass to the done callback.
1466	* @param pVM Pointer to the VM handle for performing the done function
1467	* on the EMT thread.
1468	* @thread EMT
1469	*/
1470	static DECLCALLBACK(int) vusbIDeviceReset(PVUSBIDEVICE pDevice, bool fResetOnLinux,
1471	PFNVUSBRESETDONE pfnDone, void *pvUser, PVM pVM)
1472	{
1473	RT_NOREF(pVM);
1474	PVUSBDEV pDev = (PVUSBDEV)pDevice;
1475	Assert(!pfnDone \|\| pVM);
1476	LogFlow(("vusb: reset: [%s]/%i\n", pDev->pUsbIns->pszName, pDev->i16Port));
1477
1478	/*
1479	* Only one reset operation at a time.
1480	*/
1481	const VUSBDEVICESTATE enmStateOld = vusbDevSetState(pDev, VUSB_DEVICE_STATE_RESET);
1482	if (enmStateOld == VUSB_DEVICE_STATE_RESET)
1483	{
1484	LogRel(("VUSB: %s: reset request is ignored, the device is already resetting!\n", pDev->pUsbIns->pszName));
1485	return VERR_VUSB_DEVICE_IS_RESETTING;
1486	}
1487
1488	/*
1489	* First, cancel all async URBs.
1490	*/
1491	vusbDevCancelAllUrbs(pDev, false);
1492
1493	/* Async or sync? */
1494	if (pfnDone)
1495	{
1496	/*
1497	* Async fashion.
1498	*/
1499	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)RTMemTmpAlloc(sizeof(*pArgs));
1500	if (pArgs)
1501	{
1502	pArgs->pDev = pDev;
1503	pArgs->pfnDone = pfnDone;
1504	pArgs->pvUser = pvUser;
1505	pArgs->rc = VINF_SUCCESS;
1506	AssertPtrNull(pDev->pvArgs);
1507	pDev->pvArgs = pArgs;
1508	int rc = vusbDevIoThreadExec(pDev, 0 /* fFlags */, (PFNRT)vusbDevResetWorker, 4, pDev, fResetOnLinux, true, pArgs);
1509	if (RT_SUCCESS(rc))
1510	return rc;
1511
1512	RTMemTmpFree(pArgs);
1513	}
1514	/* fall back to sync on failure */
1515	}
1516
1517	/*
1518	* Sync fashion.
1519	*/
1520	int rc = vusbDevResetWorker(pDev, fResetOnLinux, false, NULL);
1521	vusbDevResetDone(pDev, rc, pfnDone, pvUser);
1522	return rc;
1523	}
1524
1525
1526	/**
1527	* Powers on the device.
1528	*
1529	* @returns VBox status code.
1530	* @param pInterface Pointer to the device interface structure.
1531	*/
1532	static DECLCALLBACK(int) vusbIDevicePowerOn(PVUSBIDEVICE pInterface)
1533	{
1534	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1535	LogFlow(("vusbDevPowerOn: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1536
1537	/*
1538	* Check that the device is in a valid state.
1539	*/
1540	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1541	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1542	{
1543	Log(("vusb: warning: attempt to power on detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1544	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1545	}
1546	if (enmState == VUSB_DEVICE_STATE_RESET)
1547	{
1548	LogRel(("VUSB: %s: power on ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1549	return VERR_VUSB_DEVICE_IS_RESETTING;
1550	}
1551
1552	/*
1553	* Do the job.
1554	*/
1555	if (enmState == VUSB_DEVICE_STATE_ATTACHED)
1556	vusbDevSetState(pDev, VUSB_DEVICE_STATE_POWERED);
1557
1558	return VINF_SUCCESS;
1559	}
1560
1561
1562	/**
1563	* Powers off the device.
1564	*
1565	* @returns VBox status code.
1566	* @param pInterface Pointer to the device interface structure.
1567	*/
1568	static DECLCALLBACK(int) vusbIDevicePowerOff(PVUSBIDEVICE pInterface)
1569	{
1570	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1571	LogFlow(("vusbDevPowerOff: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1572
1573	/*
1574	* Check that the device is in a valid state.
1575	*/
1576	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1577	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1578	{
1579	Log(("vusb: warning: attempt to power off detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1580	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1581	}
1582	if (enmState == VUSB_DEVICE_STATE_RESET)
1583	{
1584	LogRel(("VUSB: %s: power off ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1585	return VERR_VUSB_DEVICE_IS_RESETTING;
1586	}
1587
1588	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ATTACHED);
1589	return VINF_SUCCESS;
1590	}
1591
1592
1593	/**
1594	* Get the state of the device.
1595	*
1596	* @returns Device state.
1597	* @param pInterface Pointer to the device interface structure.
1598	*/
1599	static DECLCALLBACK(VUSBDEVICESTATE) vusbIDeviceGetState(PVUSBIDEVICE pInterface)
1600	{
1601	return vusbDevGetState((PVUSBDEV)pInterface);
1602	}
1603
1604
1605	/**
1606	* @interface_method_impl{VUSBIDEVICE,pfnIsSavedStateSupported}
1607	*/
1608	static DECLCALLBACK(bool) vusbIDeviceIsSavedStateSupported(PVUSBIDEVICE pInterface)
1609	{
1610	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1611	bool fSavedStateSupported = RT_BOOL(pDev->pUsbIns->pReg->fFlags & PDM_USBREG_SAVED_STATE_SUPPORTED);
1612
1613	LogFlowFunc(("pInterface=%p\n", pInterface));
1614
1615	LogFlowFunc(("returns %RTbool\n", fSavedStateSupported));
1616	return fSavedStateSupported;
1617	}
1618
1619
1620	/**
1621	* @interface_method_impl{VUSBIDEVICE,pfnGetState}
1622	*/
1623	static DECLCALLBACK(VUSBSPEED) vusbIDeviceGetSpeed(PVUSBIDEVICE pInterface)
1624	{
1625	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1626	VUSBSPEED enmSpeed = pDev->pUsbIns->enmSpeed;
1627
1628	LogFlowFunc(("pInterface=%p, returns %u\n", pInterface, enmSpeed));
1629	return enmSpeed;
1630	}
1631
1632
1633	/**
1634	* The maximum number of interfaces the device can have in all of it's configuration.
1635	*
1636	* @returns Number of interfaces.
1637	* @param pDev The device.
1638	*/
1639	size_t vusbDevMaxInterfaces(PVUSBDEV pDev)
1640	{
1641	uint8_t cMax = 0;
1642	unsigned i = pDev->pDescCache->pDevice->bNumConfigurations;
1643	while (i-- > 0)
1644	{
1645	if (pDev->pDescCache->paConfigs[i].Core.bNumInterfaces > cMax)
1646	cMax = pDev->pDescCache->paConfigs[i].Core.bNumInterfaces;
1647	}
1648
1649	return cMax;
1650	}
1651
1652
1653	/**
1654	* Executes a given function on the I/O thread.
1655	*
1656	* @returns IPRT status code.
1657	* @param pDev The USB device instance data.
1658	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1659	* @param pfnFunction The function to execute.
1660	* @param cArgs Number of arguments to the function.
1661	* @param Args The parameter list.
1662	*
1663	* @remarks See remarks on RTReqQueueCallV
1664	*/
1665	DECLHIDDEN(int) vusbDevIoThreadExecV(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, va_list Args)
1666	{
1667	int rc = VINF_SUCCESS;
1668	PRTREQ hReq = NULL;
1669
1670	Assert(pDev->hUrbIoThread != NIL_RTTHREAD);
1671	if (RT_LIKELY(pDev->hUrbIoThread != NIL_RTTHREAD))
1672	{
1673	uint32_t fReqFlags = RTREQFLAGS_IPRT_STATUS;
1674
1675	if (!(fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1676	fReqFlags \|= RTREQFLAGS_NO_WAIT;
1677
1678	rc = RTReqQueueCallV(pDev->hReqQueueSync, &hReq, 0 /* cMillies */, fReqFlags, pfnFunction, cArgs, Args);
1679	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT);
1680
1681	/* In case we are called on the I/O thread just process the request. */
1682	if ( pDev->hUrbIoThread == RTThreadSelf()
1683	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1684	{
1685	int rc2 = RTReqQueueProcess(pDev->hReqQueueSync, 0);
1686	Assert(RT_SUCCESS(rc2) \|\| rc2 == VERR_TIMEOUT); NOREF(rc2);
1687	}
1688	else
1689	vusbDevUrbIoThreadWakeup(pDev);
1690
1691	if ( rc == VERR_TIMEOUT
1692	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1693	{
1694	rc = RTReqWait(hReq, RT_INDEFINITE_WAIT);
1695	AssertRC(rc);
1696	}
1697	RTReqRelease(hReq);
1698	}
1699	else
1700	rc = VERR_INVALID_STATE;
1701
1702	return rc;
1703	}
1704
1705
1706	/**
1707	* Executes a given function on the I/O thread.
1708	*
1709	* @returns IPRT status code.
1710	* @param pDev The USB device instance data.
1711	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1712	* @param pfnFunction The function to execute.
1713	* @param cArgs Number of arguments to the function.
1714	* @param ... The parameter list.
1715	*
1716	* @remarks See remarks on RTReqQueueCallV
1717	*/
1718	DECLHIDDEN(int) vusbDevIoThreadExec(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, ...)
1719	{
1720	int rc = VINF_SUCCESS;
1721	va_list va;
1722
1723	va_start(va, cArgs);
1724	rc = vusbDevIoThreadExecV(pDev, fFlags, pfnFunction, cArgs, va);
1725	va_end(va);
1726	return rc;
1727	}
1728
1729
1730	/**
1731	* Executes a given function synchronously on the I/O thread waiting for it to complete.
1732	*
1733	* @returns IPRT status code.
1734	* @param pDev The USB device instance data
1735	* @param pfnFunction The function to execute.
1736	* @param cArgs Number of arguments to the function.
1737	* @param ... The parameter list.
1738	*
1739	* @remarks See remarks on RTReqQueueCallV
1740	*/
1741	DECLHIDDEN(int) vusbDevIoThreadExecSync(PVUSBDEV pDev, PFNRT pfnFunction, unsigned cArgs, ...)
1742	{
1743	int rc = VINF_SUCCESS;
1744	va_list va;
1745
1746	va_start(va, cArgs);
1747	rc = vusbDevIoThreadExecV(pDev, VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC, pfnFunction, cArgs, va);
1748	va_end(va);
1749	return rc;
1750	}
1751
1752
1753	/**
1754	* Initialize a new VUSB device.
1755	*
1756	* @returns VBox status code.
1757	* @param pDev The VUSB device to initialize.
1758	* @param pUsbIns Pointer to the PDM USB Device instance.
1759	* @param pszCaptureFilename Optional fileame to capture the traffic to.
1760	*/
1761	int vusbDevInit(PVUSBDEV pDev, PPDMUSBINS pUsbIns, const char *pszCaptureFilename)
1762	{
1763	/*
1764	* Initialize the device data members.
1765	* (All that are Non-Zero at least.)
1766	*/
1767	Assert(!pDev->IDevice.pfnReset);
1768	Assert(!pDev->IDevice.pfnPowerOn);
1769	Assert(!pDev->IDevice.pfnPowerOff);
1770	Assert(!pDev->IDevice.pfnGetState);
1771	Assert(!pDev->IDevice.pfnIsSavedStateSupported);
1772
1773	pDev->IDevice.pfnReset = vusbIDeviceReset;
1774	pDev->IDevice.pfnPowerOn = vusbIDevicePowerOn;
1775	pDev->IDevice.pfnPowerOff = vusbIDevicePowerOff;
1776	pDev->IDevice.pfnGetState = vusbIDeviceGetState;
1777	pDev->IDevice.pfnIsSavedStateSupported = vusbIDeviceIsSavedStateSupported;
1778	pDev->IDevice.pfnGetSpeed = vusbIDeviceGetSpeed;
1779	pDev->pUsbIns = pUsbIns;
1780	pDev->pHub = NULL;
1781	pDev->enmState = VUSB_DEVICE_STATE_DETACHED;
1782	pDev->cRefs = 1;
1783	pDev->u8Address = VUSB_INVALID_ADDRESS;
1784	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
1785	pDev->i16Port = -1;
1786	pDev->u16Status = 0;
1787	pDev->pDescCache = NULL;
1788	pDev->pCurCfgDesc = NULL;
1789	pDev->paIfStates = NULL;
1790	RTListInit(&pDev->LstAsyncUrbs);
1791	memset(&pDev->aPipes[0], 0, sizeof(pDev->aPipes));
1792	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1793	{
1794	int rc = RTCritSectInit(&pDev->aPipes[i].CritSectCtrl);
1795	AssertRCReturn(rc, rc);
1796	}
1797	pDev->hResetTimer = NIL_TMTIMERHANDLE;
1798	pDev->hSniffer = VUSBSNIFFER_NIL;
1799
1800	int rc = RTCritSectInit(&pDev->CritSectAsyncUrbs);
1801	AssertRCReturn(rc, rc);
1802
1803	/* Create the URB pool. */
1804	rc = vusbUrbPoolInit(&pDev->UrbPool);
1805	AssertRCReturn(rc, rc);
1806
1807	/* Setup request queue executing synchronous tasks on the I/O thread. */
1808	rc = RTReqQueueCreate(&pDev->hReqQueueSync);
1809	AssertRCReturn(rc, rc);
1810
1811	/*
1812	* Create the reset timer. Make sure the name is unique as we're generic code.
1813	*/
1814	static uint32_t volatile s_iSeq;
1815	char szDesc[32];
1816	RTStrPrintf(szDesc, sizeof(szDesc), "VUSB Reset #%u", ASMAtomicIncU32(&s_iSeq));
1817	rc = PDMUsbHlpTimerCreate(pDev->pUsbIns, TMCLOCK_VIRTUAL, vusbDevResetDoneTimer, pDev, 0 /fFlags/,
1818	szDesc, &pDev->hResetTimer);
1819	AssertRCReturn(rc, rc);
1820
1821	if (pszCaptureFilename)
1822	{
1823	rc = VUSBSnifferCreate(&pDev->hSniffer, 0, pszCaptureFilename, NULL, NULL);
1824	AssertRCReturn(rc, rc);
1825	}
1826
1827	/*
1828	* Get the descriptor cache from the device. (shall cannot fail)
1829	*/
1830	pDev->pDescCache = pUsbIns->pReg->pfnUsbGetDescriptorCache(pUsbIns);
1831	AssertPtr(pDev->pDescCache);
1832	#ifdef VBOX_STRICT
1833	if (pDev->pDescCache->fUseCachedStringsDescriptors)
1834	{
1835	int32_t iPrevId = -1;
1836	for (unsigned iLang = 0; iLang < pDev->pDescCache->cLanguages; iLang++)
1837	{
1838	Assert((int32_t)pDev->pDescCache->paLanguages[iLang].idLang > iPrevId);
1839	iPrevId = pDev->pDescCache->paLanguages[iLang].idLang;
1840
1841	int32_t idxPrevStr = -1;
1842	PCPDMUSBDESCCACHESTRING paStrings = pDev->pDescCache->paLanguages[iLang].paStrings;
1843	unsigned cStrings = pDev->pDescCache->paLanguages[iLang].cStrings;
1844	for (unsigned iStr = 0; iStr < cStrings; iStr++)
1845	{
1846	Assert((int32_t)paStrings[iStr].idx > idxPrevStr);
1847	idxPrevStr = paStrings[iStr].idx;
1848	size_t cch = strlen(paStrings[iStr].psz);
1849	Assert(cch <= 127);
1850	}
1851	}
1852	}
1853	#endif
1854
1855	/*
1856	* Allocate memory for the interface states.
1857	*/
1858	size_t cbIface = vusbDevMaxInterfaces(pDev) * sizeof(*pDev->paIfStates);
1859	pDev->paIfStates = (PVUSBINTERFACESTATE)RTMemAllocZ(cbIface);
1860	AssertMsgReturn(pDev->paIfStates, ("RTMemAllocZ(%d) failed\n", cbIface), VERR_NO_MEMORY);
1861
1862	return VINF_SUCCESS;
1863	}
1864
1865	/*
1866	* Local Variables:
1867	* mode: c
1868	* c-file-style: "bsd"
1869	* c-basic-offset: 4
1870	* tab-width: 4
1871	* indent-tabs-mode: s
1872	* End:
1873	*/
1874

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source: vbox/trunk/src/VBox/Devices/USB/VUSBDevice.cpp@ 94342

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