VUSBDevice.cpp@ 62959

Last change on this file since 62959 was 62959, checked in by vboxsync, 8 years ago
Devices: warnings
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 60.4 KB

Line
1	/* $Id: VUSBDevice.cpp 62959 2016-08-04 08:03:50Z vboxsync $ */
2	/** @file
3	* Virtual USB - Device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 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	#if 0
146	if ((pEndPtDesc->Core.bmAttributes & 0x03) == 1)
147	{
148	int rc = vusbBufferedPipeCreate(pDev, pPipe, VUSBDIRECTION_OUT, pDev->pUsbIns->enmSpeed,
149	32 /* cLatencyMs*/, &pPipe->hBuffer);
150	if (RT_SUCCESS(rc))
151	LogRel(("VUSB: Created a buffered pipe for isochronous output endpoint\n"));
152	else
153	LogRel(("VUSB: Failed to create a buffered pipe for isochronous output endpoint with rc=%Rrc\n", rc));
154	}
155	#endif
156	}
157
158	if (pPipe->pCtrl)
159	{
160	vusbMsgFreeExtraData(pPipe->pCtrl);
161	pPipe->pCtrl = NULL;
162	}
163	}
164
165	static void unmap_endpoint(PVUSBDEV pDev, PCVUSBDESCENDPOINTEX pEndPtDesc)
166	{
167	uint8_t EndPt = pEndPtDesc->Core.bEndpointAddress & 0xF;
168	PVUSBPIPE pPipe = &pDev->aPipes[EndPt];
169	LogFlow(("unmap_endpoint: pDev=%p[%s] pEndPtDesc=%p{.bEndpointAddress=%#x, .bmAttributes=%#x} p=%p stage %s->SETUP\n",
170	pDev, pDev->pUsbIns->pszName, pEndPtDesc, pEndPtDesc->Core.bEndpointAddress, pEndPtDesc->Core.bmAttributes,
171	pPipe, g_apszCtlStates[pPipe->pCtrl ? pPipe->pCtrl->enmStage : 3]));
172
173	if ((pEndPtDesc->Core.bmAttributes & 0x3) == 0)
174	{
175	Log(("vusb: unmap MSG pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
176	pPipe->in = NULL;
177	pPipe->out = NULL;
178	}
179	else if (pEndPtDesc->Core.bEndpointAddress & 0x80)
180	{
181	Log(("vusb: unmap IN pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
182	pPipe->in = NULL;
183
184	/* Terminate the pipe buffer if created. */
185	if (pPipe->hBuffer)
186	{
187	vusbBufferedPipeDestroy(pPipe->hBuffer);
188	pPipe->hBuffer = NULL;
189	}
190	}
191	else
192	{
193	Log(("vusb: unmap OUT pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
194	pPipe->out = NULL;
195
196	/* Terminate the pipe buffer if created. */
197	if (pPipe->hBuffer)
198	{
199	vusbBufferedPipeDestroy(pPipe->hBuffer);
200	pPipe->hBuffer = NULL;
201	}
202	}
203
204	if (pPipe->pCtrl)
205	{
206	vusbMsgFreeExtraData(pPipe->pCtrl);
207	pPipe->pCtrl = NULL;
208	}
209	}
210
211	static void map_interface(PVUSBDEV pDev, PCVUSBDESCINTERFACEEX pIfDesc)
212	{
213	LogFlow(("map_interface: pDev=%p[%s] pIfDesc=%p:{.iInterface=%d, .bAlternateSetting=%d}\n",
214	pDev, pDev->pUsbIns->pszName, pIfDesc, pIfDesc->Core.iInterface, pIfDesc->Core.bAlternateSetting));
215
216	for (unsigned i = 0; i < pIfDesc->Core.bNumEndpoints; i++)
217	{
218	if ((pIfDesc->paEndpoints[i].Core.bEndpointAddress & 0xF) == VUSB_PIPE_DEFAULT)
219	Log(("vusb: Endpoint 0x%x on interface %u.%u tried to override the default message pipe!!!\n",
220	pIfDesc->paEndpoints[i].Core.bEndpointAddress, pIfDesc->Core.bInterfaceNumber, pIfDesc->Core.bAlternateSetting));
221	else
222	vusbDevMapEndpoint(pDev, &pIfDesc->paEndpoints[i]);
223	}
224	}
225
226
227	/**
228	* Worker that resets the pipe data on select config and detach.
229	*
230	* This leaves the critical section unmolested
231	*
232	* @param pPipe The pipe which data should be reset.
233	*/
234	static void vusbDevResetPipeData(PVUSBPIPE pPipe)
235	{
236	vusbMsgFreeExtraData(pPipe->pCtrl);
237	pPipe->pCtrl = NULL;
238
239	if (pPipe->hBuffer)
240	{
241	vusbBufferedPipeDestroy(pPipe->hBuffer);
242	pPipe->hBuffer = NULL;
243	}
244
245	RT_ZERO(pPipe->in);
246	RT_ZERO(pPipe->out);
247	pPipe->async = 0;
248	}
249
250
251	bool vusbDevDoSelectConfig(PVUSBDEV pDev, PCVUSBDESCCONFIGEX pCfgDesc)
252	{
253	LogFlow(("vusbDevDoSelectConfig: pDev=%p[%s] pCfgDesc=%p:{.iConfiguration=%d}\n",
254	pDev, pDev->pUsbIns->pszName, pCfgDesc, pCfgDesc->Core.iConfiguration));
255
256	/*
257	* Clean up all pipes and interfaces.
258	*/
259	unsigned i;
260	for (i = 0; i < VUSB_PIPE_MAX; i++)
261	if (i != VUSB_PIPE_DEFAULT)
262	vusbDevResetPipeData(&pDev->aPipes[i]);
263	memset(pDev->paIfStates, 0, pCfgDesc->Core.bNumInterfaces * sizeof(pDev->paIfStates[0]));
264
265	/*
266	* Map in the default setting for every interface.
267	*/
268	for (i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
269	{
270	PCVUSBINTERFACE pIf;
271	struct vusb_interface_state *pIfState;
272
273	pIf = &pCfgDesc->paIfs[i];
274	pIfState = &pDev->paIfStates[i];
275	pIfState->pIf = pIf;
276
277	/*
278	* Find the 0 setting, if it is not present we just use
279	* the lowest numbered one.
280	*/
281	for (uint32_t j = 0; j < pIf->cSettings; j++)
282	{
283	if ( !pIfState->pCurIfDesc
284	\|\| pIf->paSettings[j].Core.bAlternateSetting < pIfState->pCurIfDesc->Core.bAlternateSetting)
285	pIfState->pCurIfDesc = &pIf->paSettings[j];
286	if (pIfState->pCurIfDesc->Core.bAlternateSetting == 0)
287	break;
288	}
289
290	if (pIfState->pCurIfDesc)
291	map_interface(pDev, pIfState->pCurIfDesc);
292	}
293
294	pDev->pCurCfgDesc = pCfgDesc;
295
296	if (pCfgDesc->Core.bmAttributes & 0x40)
297	pDev->u16Status \|= (1 << VUSB_DEV_SELF_POWERED);
298	else
299	pDev->u16Status &= ~(1 << VUSB_DEV_SELF_POWERED);
300
301	return true;
302	}
303
304	/**
305	* Standard device request: SET_CONFIGURATION
306	* @returns success indicator.
307	*/
308	static bool vusbDevStdReqSetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
309	{
310	RT_NOREF(EndPt, pbBuf, pcbBuf);
311	unsigned iCfg = pSetup->wValue & 0xff;
312
313	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
314	{
315	Log(("vusb: error: %s: SET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
316	return false;
317	}
318
319	/*
320	* Check that the device is in a valid state.
321	* (The caller has already checked that it's not being reset.)
322	*/
323	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
324	if (enmState == VUSB_DEVICE_STATE_DEFAULT)
325	{
326	LogFlow(("vusbDevStdReqSetConfig: %s: default dev state !!?\n", pDev->pUsbIns->pszName));
327	return false;
328	}
329
330	PCVUSBDESCCONFIGEX pNewCfgDesc = vusbDevFindCfgDesc(pDev, iCfg);
331	if (!pNewCfgDesc)
332	{
333	Log(("vusb: error: %s: config %i not found !!!\n", pDev->pUsbIns->pszName, iCfg));
334	return false;
335	}
336
337	if (iCfg == 0)
338	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
339	else
340	vusbDevSetState(pDev, VUSB_DEVICE_STATE_CONFIGURED);
341	if (pDev->pUsbIns->pReg->pfnUsbSetConfiguration)
342	{
343	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetConfiguration, 5,
344	pDev->pUsbIns, pNewCfgDesc->Core.bConfigurationValue,
345	pDev->pCurCfgDesc, pDev->paIfStates, pNewCfgDesc);
346	if (RT_FAILURE(rc))
347	{
348	Log(("vusb: error: %s: failed to set config %i (%Rrc) !!!\n", pDev->pUsbIns->pszName, iCfg, rc));
349	return false;
350	}
351	}
352	Log(("vusb: %p[%s]: SET_CONFIGURATION: Selected config %u\n", pDev, pDev->pUsbIns->pszName, iCfg));
353	return vusbDevDoSelectConfig(pDev, pNewCfgDesc);
354	}
355
356
357	/**
358	* Standard device request: GET_CONFIGURATION
359	* @returns success indicator.
360	*/
361	static bool vusbDevStdReqGetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
362	{
363	RT_NOREF(EndPt);
364	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
365	{
366	Log(("vusb: error: %s: GET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
367	return false;
368	}
369
370	/*
371	* Check that the device is in a valid state.
372	* (The caller has already checked that it's not being reset.)
373	*/
374	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
375	if ( enmState != VUSB_DEVICE_STATE_CONFIGURED
376	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
377	{
378	LogFlow(("vusbDevStdReqGetConfig: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
379	return false;
380	}
381
382	if (*pcbBuf < 1)
383	{
384	LogFlow(("vusbDevStdReqGetConfig: %s: no space for data!\n", pDev->pUsbIns->pszName));
385	return true;
386	}
387
388	uint8_t iCfg;
389	if (enmState == VUSB_DEVICE_STATE_ADDRESS)
390	iCfg = 0;
391	else
392	iCfg = pDev->pCurCfgDesc->Core.bConfigurationValue;
393
394	*pbBuf = iCfg;
395	*pcbBuf = 1;
396	LogFlow(("vusbDevStdReqGetConfig: %s: returns iCfg=%d\n", pDev->pUsbIns->pszName, iCfg));
397	return true;
398	}
399
400	/**
401	* Standard device request: GET_INTERFACE
402	* @returns success indicator.
403	*/
404	static bool vusbDevStdReqGetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
405	{
406	RT_NOREF(EndPt);
407	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
408	{
409	Log(("vusb: error: %s: GET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
410	return false;
411	}
412
413	/*
414	* Check that the device is in a valid state.
415	* (The caller has already checked that it's not being reset.)
416	*/
417	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
418	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
419	{
420	LogFlow(("vusbDevStdReqGetInterface: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
421	return false;
422	}
423
424	if (*pcbBuf < 1)
425	{
426	LogFlow(("vusbDevStdReqGetInterface: %s: no space for data!\n", pDev->pUsbIns->pszName));
427	return true;
428	}
429
430	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
431	{
432	PCVUSBDESCINTERFACEEX pIfDesc = pDev->paIfStates[i].pCurIfDesc;
433	if ( pIfDesc
434	&& pSetup->wIndex == pIfDesc->Core.bInterfaceNumber)
435	{
436	*pbBuf = pIfDesc->Core.bAlternateSetting;
437	*pcbBuf = 1;
438	Log(("vusb: %s: GET_INTERFACE: %u.%u\n", pDev->pUsbIns->pszName, pIfDesc->Core.bInterfaceNumber, *pbBuf));
439	return true;
440	}
441	}
442
443	Log(("vusb: error: %s: GET_INTERFACE - unknown iface %u !!!\n", pDev->pUsbIns->pszName, pSetup->wIndex));
444	return false;
445	}
446
447	/**
448	* Standard device request: SET_INTERFACE
449	* @returns success indicator.
450	*/
451	static bool vusbDevStdReqSetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
452	{
453	RT_NOREF(EndPt, pbBuf, pcbBuf);
454	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
455	{
456	Log(("vusb: error: %s: SET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
457	return false;
458	}
459
460	/*
461	* Check that the device is in a valid state.
462	* (The caller has already checked that it's not being reset.)
463	*/
464	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
465	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
466	{
467	LogFlow(("vusbDevStdReqSetInterface: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
468	return false;
469	}
470
471	/*
472	* Find the interface.
473	*/
474	uint8_t iIf = pSetup->wIndex;
475	PVUSBINTERFACESTATE pIfState = vusbDevFindIfState(pDev, iIf);
476	if (!pIfState)
477	{
478	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find interface %u !!!\n", pDev->pUsbIns->pszName, iIf));
479	return false;
480	}
481	uint8_t iAlt = pSetup->wValue;
482	PCVUSBDESCINTERFACEEX pIfDesc = vusbDevFindAltIfDesc(pIfState, iAlt);
483	if (!pIfDesc)
484	{
485	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u !!!\n", pDev->pUsbIns->pszName, iIf, iAlt));
486	return false;
487	}
488
489	if (pDev->pUsbIns->pReg->pfnUsbSetInterface)
490	{
491	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetInterface, 3, pDev->pUsbIns, iIf, iAlt);
492	if (RT_FAILURE(rc))
493	{
494	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u (%Rrc)\n", pDev->pUsbIns->pszName, iIf, iAlt, rc));
495	return false;
496	}
497	}
498
499	for (unsigned i = 0; i < pIfState->pCurIfDesc->Core.bNumEndpoints; i++)
500	unmap_endpoint(pDev, &pIfState->pCurIfDesc->paEndpoints[i]);
501
502	Log(("vusb: SET_INTERFACE: Selected %u.%u\n", iIf, iAlt));
503
504	map_interface(pDev, pIfDesc);
505	pIfState->pCurIfDesc = pIfDesc;
506
507	return true;
508	}
509
510	/**
511	* Standard device request: SET_ADDRESS
512	* @returns success indicator.
513	*/
514	static bool vusbDevStdReqSetAddress(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
515	{
516	RT_NOREF(EndPt, pbBuf, pcbBuf);
517	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
518	{
519	Log(("vusb: error: %s: SET_ADDRESS - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
520	return false;
521	}
522
523	/*
524	* Check that the device is in a valid state.
525	* (The caller has already checked that it's not being reset.)
526	*/
527	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
528	if ( enmState != VUSB_DEVICE_STATE_DEFAULT
529	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
530	{
531	LogFlow(("vusbDevStdReqSetAddress: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
532	return false;
533	}
534
535	pDev->u8NewAddress = pSetup->wValue;
536	return true;
537	}
538
539	/**
540	* Standard device request: CLEAR_FEATURE
541	* @returns success indicator.
542	*
543	* @remark This is only called for VUSB_TO_ENDPOINT && ep == 0 && wValue == ENDPOINT_HALT.
544	* All other cases of CLEAR_FEATURE is handled in the normal async/sync manner.
545	*/
546	static bool vusbDevStdReqClearFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
547	{
548	RT_NOREF(pbBuf, pcbBuf);
549	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
550	{
551	case VUSB_TO_DEVICE:
552	Log(("vusb: ClearFeature: dev(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
553	break;
554	case VUSB_TO_INTERFACE:
555	Log(("vusb: ClearFeature: iface(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
556	break;
557	case VUSB_TO_ENDPOINT:
558	Log(("vusb: ClearFeature: ep(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
559	if ( !EndPt /* Default control pipe only */
560	&& pSetup->wValue == 0 /* ENDPOINT_HALT */
561	&& pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint)
562	{
563	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint,
564	2, pDev->pUsbIns, pSetup->wIndex);
565	return RT_SUCCESS(rc);
566	}
567	break;
568	default:
569	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
570	break;
571	}
572
573	AssertMsgFailed(("Invalid safe check !!!\n"));
574	return false;
575	}
576
577	/**
578	* Standard device request: SET_FEATURE
579	* @returns success indicator.
580	*/
581	static bool vusbDevStdReqSetFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
582	{
583	RT_NOREF(pDev, EndPt, pbBuf, pcbBuf);
584	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
585	{
586	case VUSB_TO_DEVICE:
587	Log(("vusb: SetFeature: dev(%u): selector=%u\n",
588	pSetup->wIndex, pSetup->wValue));
589	break;
590	case VUSB_TO_INTERFACE:
591	Log(("vusb: SetFeature: if(%u): selector=%u\n",
592	pSetup->wIndex, pSetup->wValue));
593	break;
594	case VUSB_TO_ENDPOINT:
595	Log(("vusb: SetFeature: ep(%u): selector=%u\n",
596	pSetup->wIndex, pSetup->wValue));
597	break;
598	default:
599	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
600	return false;
601	}
602	AssertMsgFailed(("This stuff is bogus\n"));
603	return false;
604	}
605
606	static bool vusbDevStdReqGetStatus(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
607	{
608	RT_NOREF(EndPt);
609	if (*pcbBuf != 2)
610	{
611	LogFlow(("vusbDevStdReqGetStatus: %s: buffer is too small! (%d)\n", pDev->pUsbIns->pszName, *pcbBuf));
612	return false;
613	}
614
615	uint16_t u16Status;
616	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
617	{
618	case VUSB_TO_DEVICE:
619	u16Status = pDev->u16Status;
620	LogFlow(("vusbDevStdReqGetStatus: %s: device status %#x (%d)\n", pDev->pUsbIns->pszName, u16Status, u16Status));
621	break;
622	case VUSB_TO_INTERFACE:
623	u16Status = 0;
624	LogFlow(("vusbDevStdReqGetStatus: %s: bogus interface status request!!\n", pDev->pUsbIns->pszName));
625	break;
626	case VUSB_TO_ENDPOINT:
627	u16Status = 0;
628	LogFlow(("vusbDevStdReqGetStatus: %s: bogus endpoint status request!!\n", pDev->pUsbIns->pszName));
629	break;
630	default:
631	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
632	return false;
633	}
634
635	(uint16_t )pbBuf = u16Status;
636	return true;
637	}
638
639
640	/**
641	* Finds a cached string.
642	*
643	* @returns Pointer to the cached string if found. NULL if not.
644	* @param paLanguages The languages to search.
645	* @param cLanguages The number of languages in the table.
646	* @param idLang The language ID.
647	* @param iString The string index.
648	*/
649	static PCPDMUSBDESCCACHESTRING FindCachedString(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
650	uint16_t idLang, uint8_t iString)
651	{
652	/** @todo binary lookups! */
653	unsigned iCurLang = cLanguages;
654	while (iCurLang-- > 0)
655	if (paLanguages[iCurLang].idLang == idLang)
656	{
657	PCPDMUSBDESCCACHESTRING paStrings = paLanguages[iCurLang].paStrings;
658	unsigned iCurStr = paLanguages[iCurLang].cStrings;
659	while (iCurStr-- > 0)
660	if (paStrings[iCurStr].idx == iString)
661	return &paStrings[iCurStr];
662	break;
663	}
664	return NULL;
665	}
666
667
668	/** Macro for copying descriptor data. */
669	#define COPY_DATA(pbDst, cbLeft, pvSrc, cbSrc) \
670	do { \
671	uint32_t cbSrc_ = cbSrc; \
672	uint32_t cbCopy = RT_MIN(cbLeft, cbSrc_); \
673	if (cbCopy) \
674	memcpy(pbBuf, pvSrc, cbCopy); \
675	cbLeft -= cbCopy; \
676	if (!cbLeft) \
677	return; \
678	pbBuf += cbCopy; \
679	} while (0)
680
681	/**
682	* Internal function for reading the language IDs.
683	*/
684	static void ReadCachedStringDesc(PCPDMUSBDESCCACHESTRING pString, uint8_t pbBuf, uint32_t pcbBuf)
685	{
686	uint32_t cbLeft = *pcbBuf;
687
688	RTUTF16 wsz[128]; /* 128-1 => bLength=0xff */
689	PRTUTF16 pwsz = wsz;
690	size_t cwc;
691	int rc = RTStrToUtf16Ex(pString->psz, RT_ELEMENTS(wsz) - 1, &pwsz, RT_ELEMENTS(wsz), &cwc);
692	if (RT_FAILURE(rc))
693	{
694	AssertRC(rc);
695	wsz[0] = 'e';
696	wsz[1] = 'r';
697	wsz[2] = 'r';
698	cwc = 3;
699	}
700
701	VUSBDESCSTRING StringDesc;
702	StringDesc.bLength = (uint8_t)(sizeof(StringDesc) + cwc * sizeof(RTUTF16));
703	StringDesc.bDescriptorType = VUSB_DT_STRING;
704	COPY_DATA(pbBuf, cbLeft, &StringDesc, sizeof(StringDesc));
705	COPY_DATA(pbBuf, cbLeft, wsz, (uint32_t)cwc * sizeof(RTUTF16));
706
707	/* updated the size of the output buffer. */
708	*pcbBuf -= cbLeft;
709	}
710
711
712	/**
713	* Internal function for reading the language IDs.
714	*/
715	static void ReadCachedLangIdDesc(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
716	uint8_t pbBuf, uint32_t pcbBuf)
717	{
718	uint32_t cbLeft = *pcbBuf;
719
720	VUSBDESCLANGID LangIdDesc;
721	size_t cbDesc = sizeof(LangIdDesc) + cLanguages * sizeof(paLanguages[0].idLang);
722	LangIdDesc.bLength = (uint8_t)RT_MIN(0xff, cbDesc);
723	LangIdDesc.bDescriptorType = VUSB_DT_STRING;
724	COPY_DATA(pbBuf, cbLeft, &LangIdDesc, sizeof(LangIdDesc));
725
726	unsigned iLanguage = cLanguages;
727	while (iLanguage-- > 0)
728	COPY_DATA(pbBuf, cbLeft, &paLanguages[iLanguage].idLang, sizeof(paLanguages[iLanguage].idLang));
729
730	/* updated the size of the output buffer. */
731	*pcbBuf -= cbLeft;
732	}
733
734
735	/**
736	* Internal function which performs a descriptor read on the cached descriptors.
737	*/
738	static void ReadCachedConfigDesc(PCVUSBDESCCONFIGEX pCfgDesc, uint8_t pbBuf, uint32_t pcbBuf)
739	{
740	uint32_t cbLeft = *pcbBuf;
741
742	/** @todo See @bugref{2693} */
743	/*
744	* Make a copy of the config descriptor and calculate the wTotalLength field.
745	*/
746	VUSBDESCCONFIG CfgDesc;
747	memcpy(&CfgDesc, pCfgDesc, VUSB_DT_CONFIG_MIN_LEN);
748	uint32_t cbTotal = pCfgDesc->Core.bLength;
749	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
750	{
751	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
752	for (uint32_t j = 0; j < pIf->cSettings; j++)
753	{
754	cbTotal += pIf->paSettings[j].cbIAD;
755	cbTotal += pIf->paSettings[j].Core.bLength;
756	cbTotal += pIf->paSettings[j].cbClass;
757	for (unsigned k = 0; k < pIf->paSettings[j].Core.bNumEndpoints; k++)
758	{
759	cbTotal += pIf->paSettings[j].paEndpoints[k].Core.bLength;
760	cbTotal += pIf->paSettings[j].paEndpoints[k].cbSsepc;
761	cbTotal += pIf->paSettings[j].paEndpoints[k].cbClass;
762	}
763	}
764	}
765	CfgDesc.wTotalLength = RT_H2LE_U16(cbTotal);
766
767	/*
768	* Copy the config descriptor
769	*/
770	COPY_DATA(pbBuf, cbLeft, &CfgDesc, VUSB_DT_CONFIG_MIN_LEN);
771	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvMore, pCfgDesc->Core.bLength - VUSB_DT_CONFIG_MIN_LEN);
772
773	/*
774	* Copy out all the interfaces for this configuration
775	*/
776	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
777	{
778	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
779	for (uint32_t j = 0; j < pIf->cSettings; j++)
780	{
781	PCVUSBDESCINTERFACEEX pIfDesc = &pIf->paSettings[j];
782
783	COPY_DATA(pbBuf, cbLeft, pIfDesc->pIAD, pIfDesc->cbIAD);
784	COPY_DATA(pbBuf, cbLeft, pIfDesc, VUSB_DT_INTERFACE_MIN_LEN);
785	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvMore, pIfDesc->Core.bLength - VUSB_DT_INTERFACE_MIN_LEN);
786	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvClass, pIfDesc->cbClass);
787
788	/*
789	* Copy out all the endpoints for this interface
790	*/
791	for (unsigned k = 0; k < pIfDesc->Core.bNumEndpoints; k++)
792	{
793	VUSBDESCENDPOINT EndPtDesc;
794	memcpy(&EndPtDesc, &pIfDesc->paEndpoints[k], VUSB_DT_ENDPOINT_MIN_LEN);
795	EndPtDesc.wMaxPacketSize = RT_H2LE_U16(EndPtDesc.wMaxPacketSize);
796
797	COPY_DATA(pbBuf, cbLeft, &EndPtDesc, VUSB_DT_ENDPOINT_MIN_LEN);
798	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvMore, EndPtDesc.bLength - VUSB_DT_ENDPOINT_MIN_LEN);
799	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvSsepc, pIfDesc->paEndpoints[k].cbSsepc);
800	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvClass, pIfDesc->paEndpoints[k].cbClass);
801	}
802	}
803	}
804
805	/* updated the size of the output buffer. */
806	*pcbBuf -= cbLeft;
807	}
808
809	/**
810	* Internal function which performs a descriptor read on the cached descriptors.
811	*/
812	static void ReadCachedDeviceDesc(PCVUSBDESCDEVICE pDevDesc, uint8_t pbBuf, uint32_t pcbBuf)
813	{
814	uint32_t cbLeft = *pcbBuf;
815
816	/*
817	* Duplicate the device description and update some fields we keep in cpu type.
818	*/
819	Assert(sizeof(VUSBDESCDEVICE) == 18);
820	VUSBDESCDEVICE DevDesc = *pDevDesc;
821	DevDesc.bcdUSB = RT_H2LE_U16(DevDesc.bcdUSB);
822	DevDesc.idVendor = RT_H2LE_U16(DevDesc.idVendor);
823	DevDesc.idProduct = RT_H2LE_U16(DevDesc.idProduct);
824	DevDesc.bcdDevice = RT_H2LE_U16(DevDesc.bcdDevice);
825
826	COPY_DATA(pbBuf, cbLeft, &DevDesc, sizeof(DevDesc));
827	COPY_DATA(pbBuf, cbLeft, pDevDesc + 1, pDevDesc->bLength - sizeof(DevDesc));
828
829	/* updated the size of the output buffer. */
830	*pcbBuf -= cbLeft;
831	}
832
833	#undef COPY_DATA
834
835	/**
836	* Standard device request: GET_DESCRIPTOR
837	* @returns success indicator.
838	* @remark not really used yet as we consider GET_DESCRIPTOR 'safe'.
839	*/
840	static bool vusbDevStdReqGetDescriptor(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
841	{
842	RT_NOREF(EndPt);
843	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) == VUSB_TO_DEVICE)
844	{
845	switch (pSetup->wValue >> 8)
846	{
847	case VUSB_DT_DEVICE:
848	ReadCachedDeviceDesc(pDev->pDescCache->pDevice, pbBuf, pcbBuf);
849	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of device descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
850	return true;
851
852	case VUSB_DT_CONFIG:
853	{
854	unsigned int iIndex = (pSetup->wValue & 0xff);
855	if (iIndex >= pDev->pDescCache->pDevice->bNumConfigurations)
856	{
857	LogFlow(("vusbDevStdReqGetDescriptor: %s: iIndex=%p >= bNumConfigurations=%d !!!\n",
858	pDev->pUsbIns->pszName, iIndex, pDev->pDescCache->pDevice->bNumConfigurations));
859	return false;
860	}
861	ReadCachedConfigDesc(&pDev->pDescCache->paConfigs[iIndex], pbBuf, pcbBuf);
862	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of config descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
863	return true;
864	}
865
866	case VUSB_DT_STRING:
867	{
868	if (pSetup->wIndex == 0)
869	{
870	ReadCachedLangIdDesc(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages, pbBuf, pcbBuf);
871	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of language ID (string) descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
872	return true;
873	}
874	PCPDMUSBDESCCACHESTRING pString;
875	pString = FindCachedString(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages,
876	pSetup->wIndex, pSetup->wValue & 0xff);
877	if (pString)
878	{
879	ReadCachedStringDesc(pString, pbBuf, pcbBuf);
880	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of string descriptors \"%s\"\n",
881	pDev->pUsbIns->pszName, *pcbBuf, pString->psz));
882	return true;
883	}
884	break;
885	}
886
887	default:
888	break;
889	}
890	}
891	Log(("vusb: %s: warning: unknown descriptor: type=%u descidx=%u lang=%u len=%u!!!\n",
892	pDev->pUsbIns->pszName, pSetup->wValue >> 8, pSetup->wValue & 0xff, pSetup->wIndex, pSetup->wLength));
893	return false;
894	}
895
896
897	/**
898	* Service the standard USB requests.
899	*
900	* Devices may call this from controlmsg() if you want vusb core to handle your standard
901	* request, it's not necessary - you could handle them manually
902	*
903	* @param pDev The device.
904	* @param EndPoint The endpoint.
905	* @param pSetup Pointer to the setup request structure.
906	* @param pvBuf Buffer?
907	* @param pcbBuf ?
908	*/
909	bool vusbDevStandardRequest(PVUSBDEV pDev, int EndPoint, PVUSBSETUP pSetup, void pvBuf, uint32_t pcbBuf)
910	{
911	static bool (* const s_apfnStdReq[VUSB_REQ_MAX])(PVUSBDEV, int, PVUSBSETUP, uint8_t , uint32_t ) =
912	{
913	vusbDevStdReqGetStatus,
914	vusbDevStdReqClearFeature,
915	NULL,
916	vusbDevStdReqSetFeature,
917	NULL,
918	vusbDevStdReqSetAddress,
919	vusbDevStdReqGetDescriptor,
920	NULL,
921	vusbDevStdReqGetConfig,
922	vusbDevStdReqSetConfig,
923	vusbDevStdReqGetInterface,
924	vusbDevStdReqSetInterface,
925	NULL /* for iso */
926	};
927
928	/*
929	* Check that the device is in a valid state.
930	*/
931	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
932	if (enmState == VUSB_DEVICE_STATE_RESET)
933	{
934	LogRel(("VUSB: %s: standard control message ignored, the device is resetting\n", pDev->pUsbIns->pszName));
935	return false;
936	}
937
938	/*
939	* Do the request if it's one we want to deal with.
940	*/
941	if ( pSetup->bRequest >= VUSB_REQ_MAX
942	\|\| !s_apfnStdReq[pSetup->bRequest])
943	{
944	Log(("vusb: warning: standard req not implemented: message %u: val=%u idx=%u len=%u !!!\n",
945	pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
946	return false;
947	}
948
949	return s_apfnStdReq[pSetup->bRequest](pDev, EndPoint, pSetup, (uint8_t *)pvBuf, pcbBuf);
950	}
951
952
953	/**
954	* Add a device to the address hash
955	*/
956	static void vusbDevAddressHash(PVUSBDEV pDev)
957	{
958	if (pDev->u8Address == VUSB_INVALID_ADDRESS)
959	return;
960	uint8_t u8Hash = vusbHashAddress(pDev->u8Address);
961	pDev->pNextHash = pDev->pHub->pRootHub->apAddrHash[u8Hash];
962	pDev->pHub->pRootHub->apAddrHash[u8Hash] = pDev;
963	}
964
965	/**
966	* Remove a device from the address hash
967	*/
968	static void vusbDevAddressUnHash(PVUSBDEV pDev)
969	{
970	if (pDev->u8Address == VUSB_INVALID_ADDRESS)
971	return;
972
973	uint8_t u8Hash = vusbHashAddress(pDev->u8Address);
974	pDev->u8Address = VUSB_INVALID_ADDRESS;
975	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
976
977	RTCritSectEnter(&pDev->pHub->pRootHub->CritSectDevices);
978	PVUSBDEV pCur = pDev->pHub->pRootHub->apAddrHash[u8Hash];
979	if (pCur == pDev)
980	{
981	/* special case, we're at the head */
982	pDev->pHub->pRootHub->apAddrHash[u8Hash] = pDev->pNextHash;
983	pDev->pNextHash = NULL;
984	}
985	else
986	{
987	/* search the list */
988	PVUSBDEV pPrev;
989	for (pPrev = pCur, pCur = pCur->pNextHash;
990	pCur;
991	pPrev = pCur, pCur = pCur->pNextHash)
992	{
993	if (pCur == pDev)
994	{
995	pPrev->pNextHash = pCur->pNextHash;
996	pDev->pNextHash = NULL;
997	break;
998	}
999	}
1000	}
1001	RTCritSectLeave(&pDev->pHub->pRootHub->CritSectDevices);
1002	}
1003
1004	/**
1005	* Sets the address of a device.
1006	*
1007	* Called by status_completion() and vusbDevResetWorker().
1008	*/
1009	void vusbDevSetAddress(PVUSBDEV pDev, uint8_t u8Address)
1010	{
1011	LogFlow(("vusbDevSetAddress: pDev=%p[%s]/%i u8Address=%#x\n",
1012	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1013
1014	/*
1015	* Check that the device is in a valid state.
1016	*/
1017	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1018	VUSBDEV_ASSERT_VALID_STATE(enmState);
1019	if ( enmState == VUSB_DEVICE_STATE_ATTACHED
1020	\|\| enmState == VUSB_DEVICE_STATE_DETACHED)
1021	{
1022	LogFlow(("vusbDevSetAddress: %s: fails because %d < POWERED\n", pDev->pUsbIns->pszName, pDev->enmState));
1023	return;
1024	}
1025	if (enmState == VUSB_DEVICE_STATE_RESET)
1026	{
1027	LogRel(("VUSB: %s: set address ignored, the device is resetting\n", pDev->pUsbIns->pszName));
1028	return;
1029	}
1030
1031	/*
1032	* Ok, get on with it.
1033	*/
1034	if (pDev->u8Address == u8Address)
1035	return;
1036
1037	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1038	AssertPtrReturnVoid(pRh);
1039	if (pDev->u8Address == VUSB_DEFAULT_ADDRESS)
1040	pRh->pDefaultAddress = NULL;
1041
1042	vusbDevAddressUnHash(pDev);
1043
1044	if (u8Address == VUSB_DEFAULT_ADDRESS)
1045	{
1046	if (pRh->pDefaultAddress != NULL)
1047	{
1048	vusbDevAddressUnHash(pRh->pDefaultAddress);
1049	vusbDevSetStateCmp(pRh->pDefaultAddress, VUSB_DEVICE_STATE_POWERED, VUSB_DEVICE_STATE_DEFAULT);
1050	Log(("2 DEFAULT ADDRS\n"));
1051	}
1052
1053	pRh->pDefaultAddress = pDev;
1054	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1055	}
1056	else
1057	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
1058
1059	pDev->u8Address = u8Address;
1060	vusbDevAddressHash(pDev);
1061
1062	Log(("vusb: %p[%s]/%i: Assigned address %u\n",
1063	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1064	}
1065
1066
1067	static DECLCALLBACK(int) vusbDevCancelAllUrbsWorker(PVUSBDEV pDev, bool fDetaching)
1068	{
1069	/*
1070	* Iterate the URBs and cancel them.
1071	*/
1072	PVUSBURBVUSB pVUsbUrb, pVUsbUrbNext;
1073	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1074	{
1075	PVUSBURB pUrb = pVUsbUrb->pUrb;
1076
1077	Assert(pUrb->pVUsb->pDev == pDev);
1078
1079	LogFlow(("%s: vusbDevCancelAllUrbs: CANCELING URB\n", pUrb->pszDesc));
1080	int rc = vusbUrbCancelWorker(pUrb, CANCELMODE_FAIL);
1081	AssertRC(rc);
1082	}
1083
1084	/*
1085	* Reap any URBs which became ripe during cancel now.
1086	*/
1087	RTCritSectEnter(&pDev->CritSectAsyncUrbs);
1088	unsigned cReaped;
1089	do
1090	{
1091	cReaped = 0;
1092	pVUsbUrb = RTListGetFirst(&pDev->LstAsyncUrbs, VUSBURBVUSBINT, NdLst);
1093	while (pVUsbUrb)
1094	{
1095	PVUSBURBVUSB pNext = RTListGetNext(&pDev->LstAsyncUrbs, pVUsbUrb, VUSBURBVUSBINT, NdLst);
1096	PVUSBURB pUrb = pVUsbUrb->pUrb;
1097	Assert(pUrb->pVUsb->pDev == pDev);
1098
1099	PVUSBURB pRipe = NULL;
1100	if (pUrb->enmState == VUSBURBSTATE_REAPED)
1101	pRipe = pUrb;
1102	else if (pUrb->enmState == VUSBURBSTATE_CANCELLED)
1103	#ifdef RT_OS_WINDOWS /** @todo Windows doesn't do cancelling, thus this kludge to prevent really bad
1104	* things from happening if we leave a pending URB behinds. */
1105	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 1500 : 0 /ms/);
1106	#else
1107	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 10 : 0 /ms/);
1108	#endif
1109	else
1110	AssertMsgFailed(("pUrb=%p enmState=%d\n", pUrb, pUrb->enmState));
1111	if (pRipe)
1112	{
1113	if ( pNext
1114	&& pRipe == pNext->pUrb)
1115	pNext = RTListGetNext(&pDev->LstAsyncUrbs, pNext, VUSBURBVUSBINT, NdLst);
1116	vusbUrbRipe(pRipe);
1117	cReaped++;
1118	}
1119
1120	pVUsbUrb = pNext;
1121	}
1122	} while (cReaped > 0);
1123
1124	/*
1125	* If we're detaching, we'll have to orphan any leftover URBs.
1126	*/
1127	if (fDetaching)
1128	{
1129	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1130	{
1131	PVUSBURB pUrb = pVUsbUrb->pUrb;
1132	Assert(pUrb->pVUsb->pDev == pDev);
1133
1134	AssertMsgFailed(("%s: Leaking left over URB! state=%d pDev=%p[%s]\n",
1135	pUrb->pszDesc, pUrb->enmState, pDev, pDev->pUsbIns->pszName));
1136	vusbUrbUnlink(pUrb);
1137	/* Unlink isn't enough, because boundary timer and detaching will try to reap it.
1138	* It was tested with MSD & iphone attachment to vSMP guest, if
1139	* it breaks anything, please add comment here, why we should unlink only.
1140	*/
1141	pUrb->pVUsb->pfnFree(pUrb);
1142	}
1143	}
1144	RTCritSectLeave(&pDev->CritSectAsyncUrbs);
1145	return VINF_SUCCESS;
1146	}
1147
1148	/**
1149	* Cancels and completes (with CRC failure) all async URBs pending
1150	* on a device. This is typically done as part of a reset and
1151	* before detaching a device.
1152	*
1153	* @param fDetaching If set, we will unconditionally unlink (and leak)
1154	* any URBs which isn't reaped.
1155	*/
1156	DECLHIDDEN(void) vusbDevCancelAllUrbs(PVUSBDEV pDev, bool fDetaching)
1157	{
1158	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevCancelAllUrbsWorker, 2, pDev, fDetaching);
1159	AssertRC(rc);
1160	}
1161
1162
1163	static DECLCALLBACK(int) vusbDevUrbIoThread(RTTHREAD hThread, void *pvUser)
1164	{
1165	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1166
1167	/* Notify the starter that we are up and running. */
1168	RTThreadUserSignal(hThread);
1169
1170	LogFlowFunc(("Entering work loop\n"));
1171
1172	while (!ASMAtomicReadBool(&pDev->fTerminate))
1173	{
1174	if (vusbDevGetState(pDev) != VUSB_DEVICE_STATE_RESET)
1175	vusbUrbDoReapAsyncDev(pDev, RT_INDEFINITE_WAIT);
1176
1177	/* Process any URBs waiting to be cancelled first. */
1178	int rc = RTReqQueueProcess(pDev->hReqQueueSync, 0); /* Don't wait if there is nothing to do. */
1179	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT); NOREF(rc);
1180	}
1181
1182	return VINF_SUCCESS;
1183	}
1184
1185	int vusbDevUrbIoThreadWakeup(PVUSBDEV pDev)
1186	{
1187	ASMAtomicXchgBool(&pDev->fWokenUp, true);
1188	return pDev->pUsbIns->pReg->pfnWakeup(pDev->pUsbIns);
1189	}
1190
1191	/**
1192	* Create the URB I/O thread.
1193	*
1194	* @returns VBox status code.
1195	* @param pDev The VUSB device.
1196	*/
1197	int vusbDevUrbIoThreadCreate(PVUSBDEV pDev)
1198	{
1199	int rc = VINF_SUCCESS;
1200
1201	ASMAtomicXchgBool(&pDev->fTerminate, false);
1202	rc = RTThreadCreateF(&pDev->hUrbIoThread, vusbDevUrbIoThread, pDev, 0, RTTHREADTYPE_IO,
1203	RTTHREADFLAGS_WAITABLE, "USBDevIo-%d", pDev->i16Port);
1204	if (RT_SUCCESS(rc))
1205	{
1206	/* Wait for it to become active. */
1207	rc = RTThreadUserWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT);
1208	}
1209
1210	return rc;
1211	}
1212
1213	/**
1214	* Destro the URB I/O thread.
1215	*
1216	* @returns VBox status code.
1217	* @param pDev The VUSB device.
1218	*/
1219	int vusbDevUrbIoThreadDestroy(PVUSBDEV pDev)
1220	{
1221	int rc = VINF_SUCCESS;
1222	int rcThread = VINF_SUCCESS;
1223
1224	ASMAtomicXchgBool(&pDev->fTerminate, true);
1225	vusbDevUrbIoThreadWakeup(pDev);
1226
1227	rc = RTThreadWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT, &rcThread);
1228	if (RT_SUCCESS(rc))
1229	rc = rcThread;
1230
1231	pDev->hUrbIoThread = NIL_RTTHREAD;
1232
1233	return rc;
1234	}
1235
1236
1237	/**
1238	* Detaches a device from the hub it's attached to.
1239	*
1240	* @returns VBox status code.
1241	* @param pDev The device to detach.
1242	*
1243	* @remark This can be called in any state but reset.
1244	*/
1245	int vusbDevDetach(PVUSBDEV pDev)
1246	{
1247	LogFlow(("vusbDevDetach: pDev=%p[%s] enmState=%#x\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1248	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1249	Assert(pDev->enmState != VUSB_DEVICE_STATE_RESET);
1250
1251	vusbDevCancelAllUrbs(pDev, true);
1252	vusbDevAddressUnHash(pDev);
1253
1254	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1255	if (!pRh)
1256	AssertMsgFailedReturn(("Not attached!\n"), VERR_VUSB_DEVICE_NOT_ATTACHED);
1257	if (pRh->pDefaultAddress == pDev)
1258	pRh->pDefaultAddress = NULL;
1259
1260	pDev->pHub->pOps->pfnDetach(pDev->pHub, pDev);
1261	pDev->i16Port = -1;
1262	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DETACHED);
1263	pDev->pHub = NULL;
1264
1265	/* Remove the configuration */
1266	pDev->pCurCfgDesc = NULL;
1267	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1268	vusbDevResetPipeData(&pDev->aPipes[i]);
1269	return VINF_SUCCESS;
1270	}
1271
1272
1273	/**
1274	* Destroys a device, detaching it from the hub if necessary.
1275	*
1276	* @param pDev The device.
1277	* @thread any.
1278	*/
1279	void vusbDevDestroy(PVUSBDEV pDev)
1280	{
1281	LogFlow(("vusbDevDestroy: pDev=%p[%s] enmState=%d\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1282
1283	RTMemFree(pDev->paIfStates);
1284	TMR3TimerDestroy(pDev->pResetTimer);
1285	pDev->pResetTimer = NULL;
1286	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1287	{
1288	Assert(pDev->aPipes[i].pCtrl == NULL);
1289	RTCritSectDelete(&pDev->aPipes[i].CritSectCtrl);
1290	}
1291
1292	/*
1293	* Destroy I/O thread and request queue last because they might still be used
1294	* when cancelling URBs.
1295	*/
1296	vusbDevUrbIoThreadDestroy(pDev);
1297
1298	int rc = RTReqQueueDestroy(pDev->hReqQueueSync);
1299	AssertRC(rc);
1300
1301	if (pDev->hSniffer != VUSBSNIFFER_NIL)
1302	VUSBSnifferDestroy(pDev->hSniffer);
1303
1304	vusbUrbPoolDestroy(&pDev->UrbPool);
1305
1306	RTCritSectDelete(&pDev->CritSectAsyncUrbs);
1307	/* Not using vusbDevSetState() deliberately here because it would assert on the state. */
1308	pDev->enmState = VUSB_DEVICE_STATE_DESTROYED;
1309	pDev->pUsbIns->pvVUsbDev2 = NULL;
1310	RTMemFree(pDev);
1311	}
1312
1313
1314	/* -=-=-=-=-=- VUSBIDEVICE methods -=-=-=-=-=- */
1315
1316
1317	/**
1318	* The actual reset has been done, do completion on EMT.
1319	*
1320	* There are several things we have to do now, like set default
1321	* config and address, and cleanup the state of control pipes.
1322	*
1323	* It's possible that the device has a delayed destroy request
1324	* pending when we get here. This can happen for async resetting.
1325	* We deal with it here, since we're now executing on the EMT
1326	* thread and the destruction will be properly serialized now.
1327	*
1328	* @param pDev The device that is being reset.
1329	* @param rc The vusbDevResetWorker return code.
1330	* @param pfnDone The done callback specified by the caller of vusbDevReset().
1331	* @param pvUser The user argument for the callback.
1332	*/
1333	static void vusbDevResetDone(PVUSBDEV pDev, int rc, PFNVUSBRESETDONE pfnDone, void *pvUser)
1334	{
1335	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1336	Assert(pDev->enmState == VUSB_DEVICE_STATE_RESET);
1337
1338	/*
1339	* Do control pipe cleanup regardless of state and result.
1340	*/
1341	for (unsigned i = 0; i < VUSB_PIPE_MAX; i++)
1342	if (pDev->aPipes[i].pCtrl)
1343	vusbMsgResetExtraData(pDev->aPipes[i].pCtrl);
1344
1345	/*
1346	* Switch to the default state.
1347	*/
1348	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1349	pDev->u16Status = 0;
1350	vusbDevDoSelectConfig(pDev, &g_Config0);
1351	if (!vusbDevIsRh(pDev))
1352	vusbDevSetAddress(pDev, VUSB_DEFAULT_ADDRESS);
1353	if (pfnDone)
1354	pfnDone(&pDev->IDevice, rc, pvUser);
1355	}
1356
1357
1358	/**
1359	* Timer callback for doing reset completion.
1360	*
1361	* @param pUsbIns The USB device instance.
1362	* @param pTimer The timer instance.
1363	* @param pvUser The VUSB device data.
1364	* @thread EMT
1365	*/
1366	static DECLCALLBACK(void) vusbDevResetDoneTimer(PPDMUSBINS pUsbIns, PTMTIMER pTimer, void *pvUser)
1367	{
1368	RT_NOREF(pUsbIns, pTimer);
1369	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1370	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)pDev->pvArgs;
1371	Assert(pDev->pUsbIns == pUsbIns);
1372
1373	AssertPtr(pArgs);
1374
1375	/*
1376	* Reset-done processing and cleanup.
1377	*/
1378	pDev->pvArgs = NULL;
1379	vusbDevResetDone(pDev, pArgs->rc, pArgs->pfnDone, pArgs->pvUser);
1380	RTMemFree(pArgs);
1381	}
1382
1383
1384	/**
1385	* Perform the actual reset.
1386	*
1387	* @thread EMT or a VUSB reset thread.
1388	*/
1389	static int vusbDevResetWorker(PVUSBDEV pDev, bool fResetOnLinux, bool fUseTimer, PVUSBRESETARGS pArgs)
1390	{
1391	int rc = VINF_SUCCESS;
1392	uint64_t u64EndTS = TMTimerGet(pDev->pResetTimer) + TMTimerFromMilli(pDev->pResetTimer, 10);
1393
1394	if (pDev->pUsbIns->pReg->pfnUsbReset)
1395	rc = pDev->pUsbIns->pReg->pfnUsbReset(pDev->pUsbIns, fResetOnLinux);
1396
1397	if (pArgs)
1398	{
1399	pArgs->rc = rc;
1400	rc = VINF_SUCCESS;
1401	}
1402
1403	if (fUseTimer)
1404	{
1405	/*
1406	* We use a timer to communicate the result back to EMT.
1407	* This avoids suspend + poweroff issues, and it should give
1408	* us more accurate scheduling than making this thread sleep.
1409	*/
1410	int rc2 = TMTimerSet(pDev->pResetTimer, u64EndTS);
1411	AssertReleaseRC(rc2);
1412	}
1413
1414	LogFlow(("vusbDevResetWorker: %s: returns %Rrc\n", pDev->pUsbIns->pszName, rc));
1415	return rc;
1416	}
1417
1418
1419	/**
1420	* Resets a device.
1421	*
1422	* Since a device reset shall take at least 10ms from the guest point of view,
1423	* it must be performed asynchronously. We create a thread which performs this
1424	* operation and ensures it will take at least 10ms.
1425	*
1426	* At times - like init - a synchronous reset is required, this can be done
1427	* by passing NULL for pfnDone.
1428	*
1429	* While the device is being reset it is in the VUSB_DEVICE_STATE_RESET state.
1430	* On completion it will be in the VUSB_DEVICE_STATE_DEFAULT state if successful,
1431	* or in the VUSB_DEVICE_STATE_DETACHED state if the rest failed.
1432	*
1433	* @returns VBox status code.
1434	*
1435	* @param pDev Pointer to the VUSB device interface.
1436	* @param fResetOnLinux Whether it's safe to reset the device(s) on a linux
1437	* host system. See discussion of logical reconnects elsewhere.
1438	* @param pfnDone Pointer to the completion routine. If NULL a synchronous
1439	* reset is preformed not respecting the 10ms.
1440	* @param pVM Pointer to the VM handle for performing the done function
1441	* on the EMT thread.
1442	* @thread EMT
1443	*/
1444	static DECLCALLBACK(int) vusbIDeviceReset(PVUSBIDEVICE pDevice, bool fResetOnLinux,
1445	PFNVUSBRESETDONE pfnDone, void *pvUser, PVM pVM)
1446	{
1447	RT_NOREF(pVM);
1448	PVUSBDEV pDev = (PVUSBDEV)pDevice;
1449	Assert(!pfnDone \|\| pVM);
1450	LogFlow(("vusb: reset: [%s]/%i\n", pDev->pUsbIns->pszName, pDev->i16Port));
1451
1452	/*
1453	* Only one reset operation at a time.
1454	*/
1455	const VUSBDEVICESTATE enmStateOld = vusbDevSetState(pDev, VUSB_DEVICE_STATE_RESET);
1456	if (enmStateOld == VUSB_DEVICE_STATE_RESET)
1457	{
1458	LogRel(("VUSB: %s: reset request is ignored, the device is already resetting!\n", pDev->pUsbIns->pszName));
1459	return VERR_VUSB_DEVICE_IS_RESETTING;
1460	}
1461
1462	/*
1463	* First, cancel all async URBs.
1464	*/
1465	vusbDevCancelAllUrbs(pDev, false);
1466
1467	/* Async or sync? */
1468	if (pfnDone)
1469	{
1470	/*
1471	* Async fashion.
1472	*/
1473	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)RTMemTmpAlloc(sizeof(*pArgs));
1474	if (pArgs)
1475	{
1476	pArgs->pDev = pDev;
1477	pArgs->pfnDone = pfnDone;
1478	pArgs->pvUser = pvUser;
1479	pArgs->rc = VINF_SUCCESS;
1480	AssertPtrNull(pDev->pvArgs);
1481	pDev->pvArgs = pArgs;
1482	int rc = vusbDevIoThreadExec(pDev, 0 /* fFlags */, (PFNRT)vusbDevResetWorker, 4, pDev, fResetOnLinux, true, pArgs);
1483	if (RT_SUCCESS(rc))
1484	return rc;
1485
1486	RTMemTmpFree(pArgs);
1487	}
1488	/* fall back to sync on failure */
1489	}
1490
1491	/*
1492	* Sync fashion.
1493	*/
1494	int rc = vusbDevResetWorker(pDev, fResetOnLinux, false, NULL);
1495	vusbDevResetDone(pDev, rc, pfnDone, pvUser);
1496	return rc;
1497	}
1498
1499
1500	/**
1501	* Powers on the device.
1502	*
1503	* @returns VBox status code.
1504	* @param pInterface Pointer to the device interface structure.
1505	*/
1506	static DECLCALLBACK(int) vusbIDevicePowerOn(PVUSBIDEVICE pInterface)
1507	{
1508	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1509	LogFlow(("vusbDevPowerOn: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1510
1511	/*
1512	* Check that the device is in a valid state.
1513	*/
1514	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1515	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1516	{
1517	Log(("vusb: warning: attempt to power on detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1518	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1519	}
1520	if (enmState == VUSB_DEVICE_STATE_RESET)
1521	{
1522	LogRel(("VUSB: %s: power on ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1523	return VERR_VUSB_DEVICE_IS_RESETTING;
1524	}
1525
1526	/*
1527	* Do the job.
1528	*/
1529	if (enmState == VUSB_DEVICE_STATE_ATTACHED)
1530	vusbDevSetState(pDev, VUSB_DEVICE_STATE_POWERED);
1531
1532	return VINF_SUCCESS;
1533	}
1534
1535
1536	/**
1537	* Powers off the device.
1538	*
1539	* @returns VBox status code.
1540	* @param pInterface Pointer to the device interface structure.
1541	*/
1542	static DECLCALLBACK(int) vusbIDevicePowerOff(PVUSBIDEVICE pInterface)
1543	{
1544	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1545	LogFlow(("vusbDevPowerOff: 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 off 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 off ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1559	return VERR_VUSB_DEVICE_IS_RESETTING;
1560	}
1561
1562	/*
1563	* If it's a root hub, we will have to cancel all URBs and reap them.
1564	*/
1565	if (vusbDevIsRh(pDev))
1566	{
1567	PVUSBROOTHUB pRh = (PVUSBROOTHUB)pDev;
1568	VUSBIRhCancelAllUrbs(&pRh->IRhConnector);
1569	VUSBIRhReapAsyncUrbs(&pRh->IRhConnector, pInterface, 0);
1570	}
1571
1572	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ATTACHED);
1573	return VINF_SUCCESS;
1574	}
1575
1576
1577	/**
1578	* Get the state of the device.
1579	*
1580	* @returns Device state.
1581	* @param pInterface Pointer to the device interface structure.
1582	*/
1583	static DECLCALLBACK(VUSBDEVICESTATE) vusbIDeviceGetState(PVUSBIDEVICE pInterface)
1584	{
1585	return vusbDevGetState((PVUSBDEV)pInterface);
1586	}
1587
1588
1589	/**
1590	* @interface_method_impl{VUSBIDEVICE,pfnIsSavedStateSupported}
1591	*/
1592	static DECLCALLBACK(bool) vusbIDeviceIsSavedStateSupported(PVUSBIDEVICE pInterface)
1593	{
1594	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1595	bool fSavedStateSupported = RT_BOOL(pDev->pUsbIns->pReg->fFlags & PDM_USBREG_SAVED_STATE_SUPPORTED);
1596
1597	LogFlowFunc(("pInterface=%p\n", pInterface));
1598
1599	LogFlowFunc(("returns %RTbool\n", fSavedStateSupported));
1600	return fSavedStateSupported;
1601	}
1602
1603
1604	/**
1605	* @interface_method_impl{VUSBIDEVICE,pfnGetState}
1606	*/
1607	static DECLCALLBACK(VUSBSPEED) vusbIDeviceGetSpeed(PVUSBIDEVICE pInterface)
1608	{
1609	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1610	VUSBSPEED enmSpeed = pDev->pUsbIns->enmSpeed;
1611
1612	LogFlowFunc(("pInterface=%p, returns %u\n", pInterface, enmSpeed));
1613	return enmSpeed;
1614	}
1615
1616
1617	/**
1618	* The maximum number of interfaces the device can have in all of it's configuration.
1619	*
1620	* @returns Number of interfaces.
1621	* @param pDev The device.
1622	*/
1623	size_t vusbDevMaxInterfaces(PVUSBDEV pDev)
1624	{
1625	uint8_t cMax = 0;
1626	unsigned i = pDev->pDescCache->pDevice->bNumConfigurations;
1627	while (i-- > 0)
1628	{
1629	if (pDev->pDescCache->paConfigs[i].Core.bNumInterfaces > cMax)
1630	cMax = pDev->pDescCache->paConfigs[i].Core.bNumInterfaces;
1631	}
1632
1633	return cMax;
1634	}
1635
1636
1637	/**
1638	* Executes a given function on the I/O thread.
1639	*
1640	* @returns IPRT status code.
1641	* @param pDev The USB device instance data.
1642	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1643	* @param pfnFunction The function to execute.
1644	* @param cArgs Number of arguments to the function.
1645	* @param Args The parameter list.
1646	*
1647	* @remarks See remarks on RTReqQueueCallV
1648	*/
1649	DECLHIDDEN(int) vusbDevIoThreadExecV(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, va_list Args)
1650	{
1651	int rc = VINF_SUCCESS;
1652	PRTREQ hReq = NULL;
1653
1654	Assert(pDev->hUrbIoThread != NIL_RTTHREAD);
1655	if (RT_LIKELY(pDev->hUrbIoThread != NIL_RTTHREAD))
1656	{
1657	uint32_t fReqFlags = RTREQFLAGS_IPRT_STATUS;
1658
1659	if (!(fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1660	fReqFlags \|= RTREQFLAGS_NO_WAIT;
1661
1662	rc = RTReqQueueCallV(pDev->hReqQueueSync, &hReq, 0 /* cMillies */, fReqFlags, pfnFunction, cArgs, Args);
1663	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT);
1664
1665	/* In case we are called on the I/O thread just process the request. */
1666	if ( pDev->hUrbIoThread == RTThreadSelf()
1667	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1668	{
1669	int rc2 = RTReqQueueProcess(pDev->hReqQueueSync, 0);
1670	Assert(RT_SUCCESS(rc2) \|\| rc2 == VERR_TIMEOUT); NOREF(rc2);
1671	}
1672	else
1673	vusbDevUrbIoThreadWakeup(pDev);
1674
1675	if ( rc == VERR_TIMEOUT
1676	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1677	{
1678	rc = RTReqWait(hReq, RT_INDEFINITE_WAIT);
1679	AssertRC(rc);
1680	}
1681	RTReqRelease(hReq);
1682	}
1683	else
1684	rc = VERR_INVALID_STATE;
1685
1686	return rc;
1687	}
1688
1689
1690	/**
1691	* Executes a given function on the I/O thread.
1692	*
1693	* @returns IPRT status code.
1694	* @param pDev The USB device instance data.
1695	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1696	* @param pfnFunction The function to execute.
1697	* @param cArgs Number of arguments to the function.
1698	* @param ... The parameter list.
1699	*
1700	* @remarks See remarks on RTReqQueueCallV
1701	*/
1702	DECLHIDDEN(int) vusbDevIoThreadExec(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, ...)
1703	{
1704	int rc = VINF_SUCCESS;
1705	va_list va;
1706
1707	va_start(va, cArgs);
1708	rc = vusbDevIoThreadExecV(pDev, fFlags, pfnFunction, cArgs, va);
1709	va_end(va);
1710	return rc;
1711	}
1712
1713
1714	/**
1715	* Executes a given function synchronously on the I/O thread waiting for it to complete.
1716	*
1717	* @returns IPRT status code.
1718	* @param pDev The USB device instance data
1719	* @param pfnFunction The function to execute.
1720	* @param cArgs Number of arguments to the function.
1721	* @param ... The parameter list.
1722	*
1723	* @remarks See remarks on RTReqQueueCallV
1724	*/
1725	DECLHIDDEN(int) vusbDevIoThreadExecSync(PVUSBDEV pDev, PFNRT pfnFunction, unsigned cArgs, ...)
1726	{
1727	int rc = VINF_SUCCESS;
1728	va_list va;
1729
1730	va_start(va, cArgs);
1731	rc = vusbDevIoThreadExecV(pDev, VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC, pfnFunction, cArgs, va);
1732	va_end(va);
1733	return rc;
1734	}
1735
1736
1737	static DECLCALLBACK(int) vusbDevGetDescriptorCacheWorker(PPDMUSBINS pUsbIns, PCPDMUSBDESCCACHE *ppDescCache)
1738	{
1739	*ppDescCache = pUsbIns->pReg->pfnUsbGetDescriptorCache(pUsbIns);
1740	return VINF_SUCCESS;
1741	}
1742
1743	/**
1744	* Initialize a new VUSB device.
1745	*
1746	* @returns VBox status code.
1747	* @param pDev The VUSB device to initialize.
1748	* @param pUsbIns Pointer to the PDM USB Device instance.
1749	*/
1750	int vusbDevInit(PVUSBDEV pDev, PPDMUSBINS pUsbIns, const char *pszCaptureFilename)
1751	{
1752	/*
1753	* Initialize the device data members.
1754	* (All that are Non-Zero at least.)
1755	*/
1756	Assert(!pDev->IDevice.pfnReset);
1757	Assert(!pDev->IDevice.pfnPowerOn);
1758	Assert(!pDev->IDevice.pfnPowerOff);
1759	Assert(!pDev->IDevice.pfnGetState);
1760	Assert(!pDev->IDevice.pfnIsSavedStateSupported);
1761
1762	pDev->IDevice.pfnReset = vusbIDeviceReset;
1763	pDev->IDevice.pfnPowerOn = vusbIDevicePowerOn;
1764	pDev->IDevice.pfnPowerOff = vusbIDevicePowerOff;
1765	pDev->IDevice.pfnGetState = vusbIDeviceGetState;
1766	pDev->IDevice.pfnIsSavedStateSupported = vusbIDeviceIsSavedStateSupported;
1767	pDev->IDevice.pfnGetSpeed = vusbIDeviceGetSpeed;
1768	pDev->pUsbIns = pUsbIns;
1769	pDev->pNext = NULL;
1770	pDev->pNextHash = NULL;
1771	pDev->pHub = NULL;
1772	pDev->enmState = VUSB_DEVICE_STATE_DETACHED;
1773	pDev->cRefs = 1;
1774	pDev->u8Address = VUSB_INVALID_ADDRESS;
1775	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
1776	pDev->i16Port = -1;
1777	pDev->u16Status = 0;
1778	pDev->pDescCache = NULL;
1779	pDev->pCurCfgDesc = NULL;
1780	pDev->paIfStates = NULL;
1781	RTListInit(&pDev->LstAsyncUrbs);
1782	memset(&pDev->aPipes[0], 0, sizeof(pDev->aPipes));
1783	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1784	{
1785	int rc = RTCritSectInit(&pDev->aPipes[i].CritSectCtrl);
1786	AssertRCReturn(rc, rc);
1787	}
1788	pDev->pResetTimer = NULL;
1789	pDev->hSniffer = VUSBSNIFFER_NIL;
1790
1791	int rc = RTCritSectInit(&pDev->CritSectAsyncUrbs);
1792	AssertRCReturn(rc, rc);
1793
1794	/* Create the URB pool. */
1795	rc = vusbUrbPoolInit(&pDev->UrbPool);
1796	AssertRCReturn(rc, rc);
1797
1798	/* Setup request queue executing synchronous tasks on the I/O thread. */
1799	rc = RTReqQueueCreate(&pDev->hReqQueueSync);
1800	AssertRCReturn(rc, rc);
1801
1802	/* Create I/O thread. */
1803	rc = vusbDevUrbIoThreadCreate(pDev);
1804	AssertRCReturn(rc, rc);
1805
1806	/*
1807	* Create the reset timer.
1808	*/
1809	rc = PDMUsbHlpTMTimerCreate(pDev->pUsbIns, TMCLOCK_VIRTUAL, vusbDevResetDoneTimer, pDev, 0 /fFlags/,
1810	"USB Device Reset Timer", &pDev->pResetTimer);
1811	AssertRCReturn(rc, rc);
1812
1813	if (pszCaptureFilename)
1814	{
1815	rc = VUSBSnifferCreate(&pDev->hSniffer, 0, pszCaptureFilename, NULL, NULL);
1816	AssertRCReturn(rc, rc);
1817	}
1818
1819	/*
1820	* Get the descriptor cache from the device. (shall cannot fail)
1821	*/
1822	rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevGetDescriptorCacheWorker, 2, pUsbIns, &pDev->pDescCache);
1823	AssertRC(rc);
1824	AssertPtr(pDev->pDescCache);
1825	#ifdef VBOX_STRICT
1826	if (pDev->pDescCache->fUseCachedStringsDescriptors)
1827	{
1828	int32_t iPrevId = -1;
1829	for (unsigned iLang = 0; iLang < pDev->pDescCache->cLanguages; iLang++)
1830	{
1831	Assert((int32_t)pDev->pDescCache->paLanguages[iLang].idLang > iPrevId);
1832	iPrevId = pDev->pDescCache->paLanguages[iLang].idLang;
1833
1834	int32_t idxPrevStr = -1;
1835	PCPDMUSBDESCCACHESTRING paStrings = pDev->pDescCache->paLanguages[iLang].paStrings;
1836	unsigned cStrings = pDev->pDescCache->paLanguages[iLang].cStrings;
1837	for (unsigned iStr = 0; iStr < cStrings; iStr++)
1838	{
1839	Assert((int32_t)paStrings[iStr].idx > idxPrevStr);
1840	idxPrevStr = paStrings[iStr].idx;
1841	size_t cch = strlen(paStrings[iStr].psz);
1842	Assert(cch <= 127);
1843	}
1844	}
1845	}
1846	#endif
1847
1848	/*
1849	* Allocate memory for the interface states.
1850	*/
1851	size_t cbIface = vusbDevMaxInterfaces(pDev) * sizeof(*pDev->paIfStates);
1852	pDev->paIfStates = (PVUSBINTERFACESTATE)RTMemAllocZ(cbIface);
1853	AssertMsgReturn(pDev->paIfStates, ("RTMemAllocZ(%d) failed\n", cbIface), VERR_NO_MEMORY);
1854
1855	return VINF_SUCCESS;
1856	}
1857
1858	/*
1859	* Local Variables:
1860	* mode: c
1861	* c-file-style: "bsd"
1862	* c-basic-offset: 4
1863	* tab-width: 4
1864	* indent-tabs-mode: s
1865	* End:
1866	*/
1867

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Devices/USB/VUSBDevice.cpp@ 62959

Download in other formats: