VUSBDevice.cpp@ 66990

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1	/* $Id: VUSBDevice.cpp 66990 2017-05-19 14:44:32Z 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
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	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetConfiguration, 5,
312	pDev->pUsbIns, pNewCfgDesc->Core.bConfigurationValue,
313	pDev->pCurCfgDesc, pDev->paIfStates, pNewCfgDesc);
314	if (RT_FAILURE(rc))
315	{
316	Log(("vusb: error: %s: failed to set config %i (%Rrc) !!!\n", pDev->pUsbIns->pszName, iCfg, rc));
317	return false;
318	}
319	}
320	Log(("vusb: %p[%s]: SET_CONFIGURATION: Selected config %u\n", pDev, pDev->pUsbIns->pszName, iCfg));
321	return vusbDevDoSelectConfig(pDev, pNewCfgDesc);
322	}
323
324
325	/**
326	* Standard device request: GET_CONFIGURATION
327	* @returns success indicator.
328	*/
329	static bool vusbDevStdReqGetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
330	{
331	RT_NOREF(EndPt);
332	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
333	{
334	Log(("vusb: error: %s: GET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
335	return false;
336	}
337
338	/*
339	* Check that the device is in a valid state.
340	* (The caller has already checked that it's not being reset.)
341	*/
342	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
343	if ( enmState != VUSB_DEVICE_STATE_CONFIGURED
344	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
345	{
346	LogFlow(("vusbDevStdReqGetConfig: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
347	return false;
348	}
349
350	if (*pcbBuf < 1)
351	{
352	LogFlow(("vusbDevStdReqGetConfig: %s: no space for data!\n", pDev->pUsbIns->pszName));
353	return true;
354	}
355
356	uint8_t iCfg;
357	if (enmState == VUSB_DEVICE_STATE_ADDRESS)
358	iCfg = 0;
359	else
360	iCfg = pDev->pCurCfgDesc->Core.bConfigurationValue;
361
362	*pbBuf = iCfg;
363	*pcbBuf = 1;
364	LogFlow(("vusbDevStdReqGetConfig: %s: returns iCfg=%d\n", pDev->pUsbIns->pszName, iCfg));
365	return true;
366	}
367
368	/**
369	* Standard device request: GET_INTERFACE
370	* @returns success indicator.
371	*/
372	static bool vusbDevStdReqGetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
373	{
374	RT_NOREF(EndPt);
375	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
376	{
377	Log(("vusb: error: %s: GET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
378	return false;
379	}
380
381	/*
382	* Check that the device is in a valid state.
383	* (The caller has already checked that it's not being reset.)
384	*/
385	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
386	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
387	{
388	LogFlow(("vusbDevStdReqGetInterface: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
389	return false;
390	}
391
392	if (*pcbBuf < 1)
393	{
394	LogFlow(("vusbDevStdReqGetInterface: %s: no space for data!\n", pDev->pUsbIns->pszName));
395	return true;
396	}
397
398	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
399	{
400	PCVUSBDESCINTERFACEEX pIfDesc = pDev->paIfStates[i].pCurIfDesc;
401	if ( pIfDesc
402	&& pSetup->wIndex == pIfDesc->Core.bInterfaceNumber)
403	{
404	*pbBuf = pIfDesc->Core.bAlternateSetting;
405	*pcbBuf = 1;
406	Log(("vusb: %s: GET_INTERFACE: %u.%u\n", pDev->pUsbIns->pszName, pIfDesc->Core.bInterfaceNumber, *pbBuf));
407	return true;
408	}
409	}
410
411	Log(("vusb: error: %s: GET_INTERFACE - unknown iface %u !!!\n", pDev->pUsbIns->pszName, pSetup->wIndex));
412	return false;
413	}
414
415	/**
416	* Standard device request: SET_INTERFACE
417	* @returns success indicator.
418	*/
419	static bool vusbDevStdReqSetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
420	{
421	RT_NOREF(EndPt, pbBuf, pcbBuf);
422	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
423	{
424	Log(("vusb: error: %s: SET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
425	return false;
426	}
427
428	/*
429	* Check that the device is in a valid state.
430	* (The caller has already checked that it's not being reset.)
431	*/
432	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
433	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
434	{
435	LogFlow(("vusbDevStdReqSetInterface: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
436	return false;
437	}
438
439	/*
440	* Find the interface.
441	*/
442	uint8_t iIf = pSetup->wIndex;
443	PVUSBINTERFACESTATE pIfState = vusbDevFindIfState(pDev, iIf);
444	if (!pIfState)
445	{
446	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find interface %u !!!\n", pDev->pUsbIns->pszName, iIf));
447	return false;
448	}
449	uint8_t iAlt = pSetup->wValue;
450	PCVUSBDESCINTERFACEEX pIfDesc = vusbDevFindAltIfDesc(pIfState, iAlt);
451	if (!pIfDesc)
452	{
453	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u !!!\n", pDev->pUsbIns->pszName, iIf, iAlt));
454	return false;
455	}
456
457	if (pDev->pUsbIns->pReg->pfnUsbSetInterface)
458	{
459	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetInterface, 3, pDev->pUsbIns, iIf, iAlt);
460	if (RT_FAILURE(rc))
461	{
462	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u (%Rrc)\n", pDev->pUsbIns->pszName, iIf, iAlt, rc));
463	return false;
464	}
465	}
466
467	for (unsigned i = 0; i < pIfState->pCurIfDesc->Core.bNumEndpoints; i++)
468	unmap_endpoint(pDev, &pIfState->pCurIfDesc->paEndpoints[i]);
469
470	Log(("vusb: SET_INTERFACE: Selected %u.%u\n", iIf, iAlt));
471
472	map_interface(pDev, pIfDesc);
473	pIfState->pCurIfDesc = pIfDesc;
474
475	return true;
476	}
477
478	/**
479	* Standard device request: SET_ADDRESS
480	* @returns success indicator.
481	*/
482	static bool vusbDevStdReqSetAddress(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
483	{
484	RT_NOREF(EndPt, pbBuf, pcbBuf);
485	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
486	{
487	Log(("vusb: error: %s: SET_ADDRESS - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
488	return false;
489	}
490
491	/*
492	* Check that the device is in a valid state.
493	* (The caller has already checked that it's not being reset.)
494	*/
495	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
496	if ( enmState != VUSB_DEVICE_STATE_DEFAULT
497	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
498	{
499	LogFlow(("vusbDevStdReqSetAddress: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
500	return false;
501	}
502
503	pDev->u8NewAddress = pSetup->wValue;
504	return true;
505	}
506
507	/**
508	* Standard device request: CLEAR_FEATURE
509	* @returns success indicator.
510	*
511	* @remark This is only called for VUSB_TO_ENDPOINT && ep == 0 && wValue == ENDPOINT_HALT.
512	* All other cases of CLEAR_FEATURE is handled in the normal async/sync manner.
513	*/
514	static bool vusbDevStdReqClearFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
515	{
516	RT_NOREF(pbBuf, pcbBuf);
517	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
518	{
519	case VUSB_TO_DEVICE:
520	Log(("vusb: ClearFeature: dev(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
521	break;
522	case VUSB_TO_INTERFACE:
523	Log(("vusb: ClearFeature: iface(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
524	break;
525	case VUSB_TO_ENDPOINT:
526	Log(("vusb: ClearFeature: ep(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
527	if ( !EndPt /* Default control pipe only */
528	&& pSetup->wValue == 0 /* ENDPOINT_HALT */
529	&& pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint)
530	{
531	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint,
532	2, pDev->pUsbIns, pSetup->wIndex);
533	return RT_SUCCESS(rc);
534	}
535	break;
536	default:
537	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
538	break;
539	}
540
541	AssertMsgFailed(("Invalid safe check !!!\n"));
542	return false;
543	}
544
545	/**
546	* Standard device request: SET_FEATURE
547	* @returns success indicator.
548	*/
549	static bool vusbDevStdReqSetFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
550	{
551	RT_NOREF(pDev, EndPt, pbBuf, pcbBuf);
552	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
553	{
554	case VUSB_TO_DEVICE:
555	Log(("vusb: SetFeature: dev(%u): selector=%u\n",
556	pSetup->wIndex, pSetup->wValue));
557	break;
558	case VUSB_TO_INTERFACE:
559	Log(("vusb: SetFeature: if(%u): selector=%u\n",
560	pSetup->wIndex, pSetup->wValue));
561	break;
562	case VUSB_TO_ENDPOINT:
563	Log(("vusb: SetFeature: ep(%u): selector=%u\n",
564	pSetup->wIndex, pSetup->wValue));
565	break;
566	default:
567	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
568	return false;
569	}
570	AssertMsgFailed(("This stuff is bogus\n"));
571	return false;
572	}
573
574	static bool vusbDevStdReqGetStatus(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
575	{
576	RT_NOREF(EndPt);
577	if (*pcbBuf != 2)
578	{
579	LogFlow(("vusbDevStdReqGetStatus: %s: buffer is too small! (%d)\n", pDev->pUsbIns->pszName, *pcbBuf));
580	return false;
581	}
582
583	uint16_t u16Status;
584	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
585	{
586	case VUSB_TO_DEVICE:
587	u16Status = pDev->u16Status;
588	LogFlow(("vusbDevStdReqGetStatus: %s: device status %#x (%d)\n", pDev->pUsbIns->pszName, u16Status, u16Status));
589	break;
590	case VUSB_TO_INTERFACE:
591	u16Status = 0;
592	LogFlow(("vusbDevStdReqGetStatus: %s: bogus interface status request!!\n", pDev->pUsbIns->pszName));
593	break;
594	case VUSB_TO_ENDPOINT:
595	u16Status = 0;
596	LogFlow(("vusbDevStdReqGetStatus: %s: bogus endpoint status request!!\n", pDev->pUsbIns->pszName));
597	break;
598	default:
599	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
600	return false;
601	}
602
603	(uint16_t )pbBuf = u16Status;
604	return true;
605	}
606
607
608	/**
609	* Finds a cached string.
610	*
611	* @returns Pointer to the cached string if found. NULL if not.
612	* @param paLanguages The languages to search.
613	* @param cLanguages The number of languages in the table.
614	* @param idLang The language ID.
615	* @param iString The string index.
616	*/
617	static PCPDMUSBDESCCACHESTRING FindCachedString(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
618	uint16_t idLang, uint8_t iString)
619	{
620	/** @todo binary lookups! */
621	unsigned iCurLang = cLanguages;
622	while (iCurLang-- > 0)
623	if (paLanguages[iCurLang].idLang == idLang)
624	{
625	PCPDMUSBDESCCACHESTRING paStrings = paLanguages[iCurLang].paStrings;
626	unsigned iCurStr = paLanguages[iCurLang].cStrings;
627	while (iCurStr-- > 0)
628	if (paStrings[iCurStr].idx == iString)
629	return &paStrings[iCurStr];
630	break;
631	}
632	return NULL;
633	}
634
635
636	/** Macro for copying descriptor data. */
637	#define COPY_DATA(pbDst, cbLeft, pvSrc, cbSrc) \
638	do { \
639	uint32_t cbSrc_ = cbSrc; \
640	uint32_t cbCopy = RT_MIN(cbLeft, cbSrc_); \
641	if (cbCopy) \
642	memcpy(pbBuf, pvSrc, cbCopy); \
643	cbLeft -= cbCopy; \
644	if (!cbLeft) \
645	return; \
646	pbBuf += cbCopy; \
647	} while (0)
648
649	/**
650	* Internal function for reading the language IDs.
651	*/
652	static void ReadCachedStringDesc(PCPDMUSBDESCCACHESTRING pString, uint8_t pbBuf, uint32_t pcbBuf)
653	{
654	uint32_t cbLeft = *pcbBuf;
655
656	RTUTF16 wsz[128]; /* 128-1 => bLength=0xff */
657	PRTUTF16 pwsz = wsz;
658	size_t cwc;
659	int rc = RTStrToUtf16Ex(pString->psz, RT_ELEMENTS(wsz) - 1, &pwsz, RT_ELEMENTS(wsz), &cwc);
660	if (RT_FAILURE(rc))
661	{
662	AssertRC(rc);
663	wsz[0] = 'e';
664	wsz[1] = 'r';
665	wsz[2] = 'r';
666	cwc = 3;
667	}
668
669	VUSBDESCSTRING StringDesc;
670	StringDesc.bLength = (uint8_t)(sizeof(StringDesc) + cwc * sizeof(RTUTF16));
671	StringDesc.bDescriptorType = VUSB_DT_STRING;
672	COPY_DATA(pbBuf, cbLeft, &StringDesc, sizeof(StringDesc));
673	COPY_DATA(pbBuf, cbLeft, wsz, (uint32_t)cwc * sizeof(RTUTF16));
674
675	/* updated the size of the output buffer. */
676	*pcbBuf -= cbLeft;
677	}
678
679
680	/**
681	* Internal function for reading the language IDs.
682	*/
683	static void ReadCachedLangIdDesc(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
684	uint8_t pbBuf, uint32_t pcbBuf)
685	{
686	uint32_t cbLeft = *pcbBuf;
687
688	VUSBDESCLANGID LangIdDesc;
689	size_t cbDesc = sizeof(LangIdDesc) + cLanguages * sizeof(paLanguages[0].idLang);
690	LangIdDesc.bLength = (uint8_t)RT_MIN(0xff, cbDesc);
691	LangIdDesc.bDescriptorType = VUSB_DT_STRING;
692	COPY_DATA(pbBuf, cbLeft, &LangIdDesc, sizeof(LangIdDesc));
693
694	unsigned iLanguage = cLanguages;
695	while (iLanguage-- > 0)
696	COPY_DATA(pbBuf, cbLeft, &paLanguages[iLanguage].idLang, sizeof(paLanguages[iLanguage].idLang));
697
698	/* updated the size of the output buffer. */
699	*pcbBuf -= cbLeft;
700	}
701
702
703	/**
704	* Internal function which performs a descriptor read on the cached descriptors.
705	*/
706	static void ReadCachedConfigDesc(PCVUSBDESCCONFIGEX pCfgDesc, uint8_t pbBuf, uint32_t pcbBuf)
707	{
708	uint32_t cbLeft = *pcbBuf;
709
710	/*
711	* Make a copy of the config descriptor and calculate the wTotalLength field.
712	*/
713	VUSBDESCCONFIG CfgDesc;
714	memcpy(&CfgDesc, pCfgDesc, VUSB_DT_CONFIG_MIN_LEN);
715	uint32_t cbTotal = 0;
716	cbTotal += pCfgDesc->Core.bLength;
717	cbTotal += pCfgDesc->cbClass;
718	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
719	{
720	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
721	for (uint32_t j = 0; j < pIf->cSettings; j++)
722	{
723	cbTotal += pIf->paSettings[j].cbIAD;
724	cbTotal += pIf->paSettings[j].Core.bLength;
725	cbTotal += pIf->paSettings[j].cbClass;
726	for (unsigned k = 0; k < pIf->paSettings[j].Core.bNumEndpoints; k++)
727	{
728	cbTotal += pIf->paSettings[j].paEndpoints[k].Core.bLength;
729	cbTotal += pIf->paSettings[j].paEndpoints[k].cbSsepc;
730	cbTotal += pIf->paSettings[j].paEndpoints[k].cbClass;
731	}
732	}
733	}
734	CfgDesc.wTotalLength = RT_H2LE_U16(cbTotal);
735
736	/*
737	* Copy the config descriptor
738	*/
739	COPY_DATA(pbBuf, cbLeft, &CfgDesc, VUSB_DT_CONFIG_MIN_LEN);
740	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvMore, pCfgDesc->Core.bLength - VUSB_DT_CONFIG_MIN_LEN);
741	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvClass, pCfgDesc->cbClass);
742
743	/*
744	* Copy out all the interfaces for this configuration
745	*/
746	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
747	{
748	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
749	for (uint32_t j = 0; j < pIf->cSettings; j++)
750	{
751	PCVUSBDESCINTERFACEEX pIfDesc = &pIf->paSettings[j];
752
753	COPY_DATA(pbBuf, cbLeft, pIfDesc->pIAD, pIfDesc->cbIAD);
754	COPY_DATA(pbBuf, cbLeft, pIfDesc, VUSB_DT_INTERFACE_MIN_LEN);
755	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvMore, pIfDesc->Core.bLength - VUSB_DT_INTERFACE_MIN_LEN);
756	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvClass, pIfDesc->cbClass);
757
758	/*
759	* Copy out all the endpoints for this interface
760	*/
761	for (unsigned k = 0; k < pIfDesc->Core.bNumEndpoints; k++)
762	{
763	VUSBDESCENDPOINT EndPtDesc;
764	memcpy(&EndPtDesc, &pIfDesc->paEndpoints[k], VUSB_DT_ENDPOINT_MIN_LEN);
765	EndPtDesc.wMaxPacketSize = RT_H2LE_U16(EndPtDesc.wMaxPacketSize);
766
767	COPY_DATA(pbBuf, cbLeft, &EndPtDesc, VUSB_DT_ENDPOINT_MIN_LEN);
768	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvMore, EndPtDesc.bLength - VUSB_DT_ENDPOINT_MIN_LEN);
769	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvSsepc, pIfDesc->paEndpoints[k].cbSsepc);
770	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvClass, pIfDesc->paEndpoints[k].cbClass);
771	}
772	}
773	}
774
775	/* updated the size of the output buffer. */
776	*pcbBuf -= cbLeft;
777	}
778
779	/**
780	* Internal function which performs a descriptor read on the cached descriptors.
781	*/
782	static void ReadCachedDeviceDesc(PCVUSBDESCDEVICE pDevDesc, uint8_t pbBuf, uint32_t pcbBuf)
783	{
784	uint32_t cbLeft = *pcbBuf;
785
786	/*
787	* Duplicate the device description and update some fields we keep in cpu type.
788	*/
789	Assert(sizeof(VUSBDESCDEVICE) == 18);
790	VUSBDESCDEVICE DevDesc = *pDevDesc;
791	DevDesc.bcdUSB = RT_H2LE_U16(DevDesc.bcdUSB);
792	DevDesc.idVendor = RT_H2LE_U16(DevDesc.idVendor);
793	DevDesc.idProduct = RT_H2LE_U16(DevDesc.idProduct);
794	DevDesc.bcdDevice = RT_H2LE_U16(DevDesc.bcdDevice);
795
796	COPY_DATA(pbBuf, cbLeft, &DevDesc, sizeof(DevDesc));
797	COPY_DATA(pbBuf, cbLeft, pDevDesc + 1, pDevDesc->bLength - sizeof(DevDesc));
798
799	/* updated the size of the output buffer. */
800	*pcbBuf -= cbLeft;
801	}
802
803	#undef COPY_DATA
804
805	/**
806	* Standard device request: GET_DESCRIPTOR
807	* @returns success indicator.
808	* @remark not really used yet as we consider GET_DESCRIPTOR 'safe'.
809	*/
810	static bool vusbDevStdReqGetDescriptor(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
811	{
812	RT_NOREF(EndPt);
813	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) == VUSB_TO_DEVICE)
814	{
815	switch (pSetup->wValue >> 8)
816	{
817	case VUSB_DT_DEVICE:
818	ReadCachedDeviceDesc(pDev->pDescCache->pDevice, pbBuf, pcbBuf);
819	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of device descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
820	return true;
821
822	case VUSB_DT_CONFIG:
823	{
824	unsigned int iIndex = (pSetup->wValue & 0xff);
825	if (iIndex >= pDev->pDescCache->pDevice->bNumConfigurations)
826	{
827	LogFlow(("vusbDevStdReqGetDescriptor: %s: iIndex=%p >= bNumConfigurations=%d !!!\n",
828	pDev->pUsbIns->pszName, iIndex, pDev->pDescCache->pDevice->bNumConfigurations));
829	return false;
830	}
831	ReadCachedConfigDesc(&pDev->pDescCache->paConfigs[iIndex], pbBuf, pcbBuf);
832	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of config descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
833	return true;
834	}
835
836	case VUSB_DT_STRING:
837	{
838	if (pSetup->wIndex == 0)
839	{
840	ReadCachedLangIdDesc(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages, pbBuf, pcbBuf);
841	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of language ID (string) descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
842	return true;
843	}
844	PCPDMUSBDESCCACHESTRING pString;
845	pString = FindCachedString(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages,
846	pSetup->wIndex, pSetup->wValue & 0xff);
847	if (pString)
848	{
849	ReadCachedStringDesc(pString, pbBuf, pcbBuf);
850	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of string descriptors \"%s\"\n",
851	pDev->pUsbIns->pszName, *pcbBuf, pString->psz));
852	return true;
853	}
854	break;
855	}
856
857	default:
858	break;
859	}
860	}
861	Log(("vusb: %s: warning: unknown descriptor: type=%u descidx=%u lang=%u len=%u!!!\n",
862	pDev->pUsbIns->pszName, pSetup->wValue >> 8, pSetup->wValue & 0xff, pSetup->wIndex, pSetup->wLength));
863	return false;
864	}
865
866
867	/**
868	* Service the standard USB requests.
869	*
870	* Devices may call this from controlmsg() if you want vusb core to handle your standard
871	* request, it's not necessary - you could handle them manually
872	*
873	* @param pDev The device.
874	* @param EndPoint The endpoint.
875	* @param pSetup Pointer to the setup request structure.
876	* @param pvBuf Buffer?
877	* @param pcbBuf ?
878	*/
879	bool vusbDevStandardRequest(PVUSBDEV pDev, int EndPoint, PVUSBSETUP pSetup, void pvBuf, uint32_t pcbBuf)
880	{
881	static bool (* const s_apfnStdReq[VUSB_REQ_MAX])(PVUSBDEV, int, PVUSBSETUP, uint8_t , uint32_t ) =
882	{
883	vusbDevStdReqGetStatus,
884	vusbDevStdReqClearFeature,
885	NULL,
886	vusbDevStdReqSetFeature,
887	NULL,
888	vusbDevStdReqSetAddress,
889	vusbDevStdReqGetDescriptor,
890	NULL,
891	vusbDevStdReqGetConfig,
892	vusbDevStdReqSetConfig,
893	vusbDevStdReqGetInterface,
894	vusbDevStdReqSetInterface,
895	NULL /* for iso */
896	};
897
898	/*
899	* Check that the device is in a valid state.
900	*/
901	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
902	if (enmState == VUSB_DEVICE_STATE_RESET)
903	{
904	LogRel(("VUSB: %s: standard control message ignored, the device is resetting\n", pDev->pUsbIns->pszName));
905	return false;
906	}
907
908	/*
909	* Do the request if it's one we want to deal with.
910	*/
911	if ( pSetup->bRequest >= VUSB_REQ_MAX
912	\|\| !s_apfnStdReq[pSetup->bRequest])
913	{
914	Log(("vusb: warning: standard req not implemented: message %u: val=%u idx=%u len=%u !!!\n",
915	pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
916	return false;
917	}
918
919	return s_apfnStdReq[pSetup->bRequest](pDev, EndPoint, pSetup, (uint8_t *)pvBuf, pcbBuf);
920	}
921
922
923	/**
924	* Add a device to the address hash
925	*/
926	static void vusbDevAddressHash(PVUSBDEV pDev)
927	{
928	if (pDev->u8Address == VUSB_INVALID_ADDRESS)
929	return;
930	uint8_t u8Hash = vusbHashAddress(pDev->u8Address);
931	pDev->pNextHash = pDev->pHub->pRootHub->apAddrHash[u8Hash];
932	pDev->pHub->pRootHub->apAddrHash[u8Hash] = pDev;
933	}
934
935	/**
936	* Remove a device from the address hash
937	*/
938	static void vusbDevAddressUnHash(PVUSBDEV pDev)
939	{
940	if (pDev->u8Address == VUSB_INVALID_ADDRESS)
941	return;
942
943	uint8_t u8Hash = vusbHashAddress(pDev->u8Address);
944	pDev->u8Address = VUSB_INVALID_ADDRESS;
945	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
946
947	RTCritSectEnter(&pDev->pHub->pRootHub->CritSectDevices);
948	PVUSBDEV pCur = pDev->pHub->pRootHub->apAddrHash[u8Hash];
949	if (pCur == pDev)
950	{
951	/* special case, we're at the head */
952	pDev->pHub->pRootHub->apAddrHash[u8Hash] = pDev->pNextHash;
953	pDev->pNextHash = NULL;
954	}
955	else
956	{
957	/* search the list */
958	PVUSBDEV pPrev;
959	for (pPrev = pCur, pCur = pCur->pNextHash;
960	pCur;
961	pPrev = pCur, pCur = pCur->pNextHash)
962	{
963	if (pCur == pDev)
964	{
965	pPrev->pNextHash = pCur->pNextHash;
966	pDev->pNextHash = NULL;
967	break;
968	}
969	}
970	}
971	RTCritSectLeave(&pDev->pHub->pRootHub->CritSectDevices);
972	}
973
974	/**
975	* Sets the address of a device.
976	*
977	* Called by status_completion() and vusbDevResetWorker().
978	*/
979	void vusbDevSetAddress(PVUSBDEV pDev, uint8_t u8Address)
980	{
981	LogFlow(("vusbDevSetAddress: pDev=%p[%s]/%i u8Address=%#x\n",
982	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
983
984	/*
985	* Check that the device is in a valid state.
986	*/
987	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
988	VUSBDEV_ASSERT_VALID_STATE(enmState);
989	if ( enmState == VUSB_DEVICE_STATE_ATTACHED
990	\|\| enmState == VUSB_DEVICE_STATE_DETACHED)
991	{
992	LogFlow(("vusbDevSetAddress: %s: fails because %d < POWERED\n", pDev->pUsbIns->pszName, pDev->enmState));
993	return;
994	}
995	if (enmState == VUSB_DEVICE_STATE_RESET)
996	{
997	LogRel(("VUSB: %s: set address ignored, the device is resetting\n", pDev->pUsbIns->pszName));
998	return;
999	}
1000
1001	/*
1002	* Ok, get on with it.
1003	*/
1004	if (pDev->u8Address == u8Address)
1005	return;
1006
1007	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1008	AssertPtrReturnVoid(pRh);
1009	if (pDev->u8Address == VUSB_DEFAULT_ADDRESS)
1010	pRh->pDefaultAddress = NULL;
1011
1012	vusbDevAddressUnHash(pDev);
1013
1014	if (u8Address == VUSB_DEFAULT_ADDRESS)
1015	{
1016	if (pRh->pDefaultAddress != NULL)
1017	{
1018	vusbDevAddressUnHash(pRh->pDefaultAddress);
1019	vusbDevSetStateCmp(pRh->pDefaultAddress, VUSB_DEVICE_STATE_POWERED, VUSB_DEVICE_STATE_DEFAULT);
1020	Log(("2 DEFAULT ADDRS\n"));
1021	}
1022
1023	pRh->pDefaultAddress = pDev;
1024	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1025	}
1026	else
1027	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
1028
1029	pDev->u8Address = u8Address;
1030	vusbDevAddressHash(pDev);
1031
1032	Log(("vusb: %p[%s]/%i: Assigned address %u\n",
1033	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1034	}
1035
1036
1037	static DECLCALLBACK(int) vusbDevCancelAllUrbsWorker(PVUSBDEV pDev, bool fDetaching)
1038	{
1039	/*
1040	* Iterate the URBs and cancel them.
1041	*/
1042	PVUSBURBVUSB pVUsbUrb, pVUsbUrbNext;
1043	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1044	{
1045	PVUSBURB pUrb = pVUsbUrb->pUrb;
1046
1047	Assert(pUrb->pVUsb->pDev == pDev);
1048
1049	LogFlow(("%s: vusbDevCancelAllUrbs: CANCELING URB\n", pUrb->pszDesc));
1050	int rc = vusbUrbCancelWorker(pUrb, CANCELMODE_FAIL);
1051	AssertRC(rc);
1052	}
1053
1054	/*
1055	* Reap any URBs which became ripe during cancel now.
1056	*/
1057	RTCritSectEnter(&pDev->CritSectAsyncUrbs);
1058	unsigned cReaped;
1059	do
1060	{
1061	cReaped = 0;
1062	pVUsbUrb = RTListGetFirst(&pDev->LstAsyncUrbs, VUSBURBVUSBINT, NdLst);
1063	while (pVUsbUrb)
1064	{
1065	PVUSBURBVUSB pNext = RTListGetNext(&pDev->LstAsyncUrbs, pVUsbUrb, VUSBURBVUSBINT, NdLst);
1066	PVUSBURB pUrb = pVUsbUrb->pUrb;
1067	Assert(pUrb->pVUsb->pDev == pDev);
1068
1069	PVUSBURB pRipe = NULL;
1070	if (pUrb->enmState == VUSBURBSTATE_REAPED)
1071	pRipe = pUrb;
1072	else if (pUrb->enmState == VUSBURBSTATE_CANCELLED)
1073	#ifdef RT_OS_WINDOWS /** @todo Windows doesn't do cancelling, thus this kludge to prevent really bad
1074	* things from happening if we leave a pending URB behinds. */
1075	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 1500 : 0 /ms/);
1076	#else
1077	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 10 : 0 /ms/);
1078	#endif
1079	else
1080	AssertMsgFailed(("pUrb=%p enmState=%d\n", pUrb, pUrb->enmState));
1081	if (pRipe)
1082	{
1083	if ( pNext
1084	&& pRipe == pNext->pUrb)
1085	pNext = RTListGetNext(&pDev->LstAsyncUrbs, pNext, VUSBURBVUSBINT, NdLst);
1086	vusbUrbRipe(pRipe);
1087	cReaped++;
1088	}
1089
1090	pVUsbUrb = pNext;
1091	}
1092	} while (cReaped > 0);
1093
1094	/*
1095	* If we're detaching, we'll have to orphan any leftover URBs.
1096	*/
1097	if (fDetaching)
1098	{
1099	RTListForEachSafe(&pDev->LstAsyncUrbs, pVUsbUrb, pVUsbUrbNext, VUSBURBVUSBINT, NdLst)
1100	{
1101	PVUSBURB pUrb = pVUsbUrb->pUrb;
1102	Assert(pUrb->pVUsb->pDev == pDev);
1103
1104	AssertMsgFailed(("%s: Leaking left over URB! state=%d pDev=%p[%s]\n",
1105	pUrb->pszDesc, pUrb->enmState, pDev, pDev->pUsbIns->pszName));
1106	vusbUrbUnlink(pUrb);
1107	/* Unlink isn't enough, because boundary timer and detaching will try to reap it.
1108	* It was tested with MSD & iphone attachment to vSMP guest, if
1109	* it breaks anything, please add comment here, why we should unlink only.
1110	*/
1111	pUrb->pVUsb->pfnFree(pUrb);
1112	}
1113	}
1114	RTCritSectLeave(&pDev->CritSectAsyncUrbs);
1115	return VINF_SUCCESS;
1116	}
1117
1118	/**
1119	* Cancels and completes (with CRC failure) all async URBs pending
1120	* on a device. This is typically done as part of a reset and
1121	* before detaching a device.
1122	*
1123	* @returns nothing.
1124	* @param pDev The VUSB device instance.
1125	* @param fDetaching If set, we will unconditionally unlink (and leak)
1126	* any URBs which isn't reaped.
1127	*/
1128	DECLHIDDEN(void) vusbDevCancelAllUrbs(PVUSBDEV pDev, bool fDetaching)
1129	{
1130	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevCancelAllUrbsWorker, 2, pDev, fDetaching);
1131	AssertRC(rc);
1132	}
1133
1134
1135	static DECLCALLBACK(int) vusbDevUrbIoThread(RTTHREAD hThread, void *pvUser)
1136	{
1137	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1138
1139	/* Notify the starter that we are up and running. */
1140	RTThreadUserSignal(hThread);
1141
1142	LogFlowFunc(("Entering work loop\n"));
1143
1144	while (!ASMAtomicReadBool(&pDev->fTerminate))
1145	{
1146	if (vusbDevGetState(pDev) != VUSB_DEVICE_STATE_RESET)
1147	vusbUrbDoReapAsyncDev(pDev, RT_INDEFINITE_WAIT);
1148
1149	/* Process any URBs waiting to be cancelled first. */
1150	int rc = RTReqQueueProcess(pDev->hReqQueueSync, 0); /* Don't wait if there is nothing to do. */
1151	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT); NOREF(rc);
1152	}
1153
1154	return VINF_SUCCESS;
1155	}
1156
1157	int vusbDevUrbIoThreadWakeup(PVUSBDEV pDev)
1158	{
1159	ASMAtomicXchgBool(&pDev->fWokenUp, true);
1160	return pDev->pUsbIns->pReg->pfnWakeup(pDev->pUsbIns);
1161	}
1162
1163	/**
1164	* Create the URB I/O thread.
1165	*
1166	* @returns VBox status code.
1167	* @param pDev The VUSB device.
1168	*/
1169	int vusbDevUrbIoThreadCreate(PVUSBDEV pDev)
1170	{
1171	int rc = VINF_SUCCESS;
1172
1173	ASMAtomicXchgBool(&pDev->fTerminate, false);
1174	rc = RTThreadCreateF(&pDev->hUrbIoThread, vusbDevUrbIoThread, pDev, 0, RTTHREADTYPE_IO,
1175	RTTHREADFLAGS_WAITABLE, "USBDevIo-%d", pDev->i16Port);
1176	if (RT_SUCCESS(rc))
1177	{
1178	/* Wait for it to become active. */
1179	rc = RTThreadUserWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT);
1180	}
1181
1182	return rc;
1183	}
1184
1185	/**
1186	* Destro the URB I/O thread.
1187	*
1188	* @returns VBox status code.
1189	* @param pDev The VUSB device.
1190	*/
1191	int vusbDevUrbIoThreadDestroy(PVUSBDEV pDev)
1192	{
1193	int rc = VINF_SUCCESS;
1194	int rcThread = VINF_SUCCESS;
1195
1196	ASMAtomicXchgBool(&pDev->fTerminate, true);
1197	vusbDevUrbIoThreadWakeup(pDev);
1198
1199	rc = RTThreadWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT, &rcThread);
1200	if (RT_SUCCESS(rc))
1201	rc = rcThread;
1202
1203	pDev->hUrbIoThread = NIL_RTTHREAD;
1204
1205	return rc;
1206	}
1207
1208
1209	/**
1210	* Detaches a device from the hub it's attached to.
1211	*
1212	* @returns VBox status code.
1213	* @param pDev The device to detach.
1214	*
1215	* @remark This can be called in any state but reset.
1216	*/
1217	int vusbDevDetach(PVUSBDEV pDev)
1218	{
1219	LogFlow(("vusbDevDetach: pDev=%p[%s] enmState=%#x\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1220	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1221	Assert(pDev->enmState != VUSB_DEVICE_STATE_RESET);
1222
1223	vusbDevCancelAllUrbs(pDev, true);
1224	vusbDevAddressUnHash(pDev);
1225
1226	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1227	if (!pRh)
1228	AssertMsgFailedReturn(("Not attached!\n"), VERR_VUSB_DEVICE_NOT_ATTACHED);
1229	if (pRh->pDefaultAddress == pDev)
1230	pRh->pDefaultAddress = NULL;
1231
1232	pDev->pHub->pOps->pfnDetach(pDev->pHub, pDev);
1233	pDev->i16Port = -1;
1234	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DETACHED);
1235	pDev->pHub = NULL;
1236
1237	/* Remove the configuration */
1238	pDev->pCurCfgDesc = NULL;
1239	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1240	vusbDevResetPipeData(&pDev->aPipes[i]);
1241	return VINF_SUCCESS;
1242	}
1243
1244
1245	/**
1246	* Destroys a device, detaching it from the hub if necessary.
1247	*
1248	* @param pDev The device.
1249	* @thread any.
1250	*/
1251	void vusbDevDestroy(PVUSBDEV pDev)
1252	{
1253	LogFlow(("vusbDevDestroy: pDev=%p[%s] enmState=%d\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1254
1255	RTMemFree(pDev->paIfStates);
1256	TMR3TimerDestroy(pDev->pResetTimer);
1257	pDev->pResetTimer = NULL;
1258	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1259	{
1260	Assert(pDev->aPipes[i].pCtrl == NULL);
1261	RTCritSectDelete(&pDev->aPipes[i].CritSectCtrl);
1262	}
1263
1264	/*
1265	* Destroy I/O thread and request queue last because they might still be used
1266	* when cancelling URBs.
1267	*/
1268	vusbDevUrbIoThreadDestroy(pDev);
1269
1270	int rc = RTReqQueueDestroy(pDev->hReqQueueSync);
1271	AssertRC(rc);
1272
1273	if (pDev->hSniffer != VUSBSNIFFER_NIL)
1274	VUSBSnifferDestroy(pDev->hSniffer);
1275
1276	vusbUrbPoolDestroy(&pDev->UrbPool);
1277
1278	RTCritSectDelete(&pDev->CritSectAsyncUrbs);
1279	/* Not using vusbDevSetState() deliberately here because it would assert on the state. */
1280	pDev->enmState = VUSB_DEVICE_STATE_DESTROYED;
1281	pDev->pUsbIns->pvVUsbDev2 = NULL;
1282	RTMemFree(pDev);
1283	}
1284
1285
1286	/* -=-=-=-=-=- VUSBIDEVICE methods -=-=-=-=-=- */
1287
1288
1289	/**
1290	* The actual reset has been done, do completion on EMT.
1291	*
1292	* There are several things we have to do now, like set default
1293	* config and address, and cleanup the state of control pipes.
1294	*
1295	* It's possible that the device has a delayed destroy request
1296	* pending when we get here. This can happen for async resetting.
1297	* We deal with it here, since we're now executing on the EMT
1298	* thread and the destruction will be properly serialized now.
1299	*
1300	* @param pDev The device that is being reset.
1301	* @param rc The vusbDevResetWorker return code.
1302	* @param pfnDone The done callback specified by the caller of vusbDevReset().
1303	* @param pvUser The user argument for the callback.
1304	*/
1305	static void vusbDevResetDone(PVUSBDEV pDev, int rc, PFNVUSBRESETDONE pfnDone, void *pvUser)
1306	{
1307	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1308	Assert(pDev->enmState == VUSB_DEVICE_STATE_RESET);
1309
1310	/*
1311	* Do control pipe cleanup regardless of state and result.
1312	*/
1313	for (unsigned i = 0; i < VUSB_PIPE_MAX; i++)
1314	if (pDev->aPipes[i].pCtrl)
1315	vusbMsgResetExtraData(pDev->aPipes[i].pCtrl);
1316
1317	/*
1318	* Switch to the default state.
1319	*/
1320	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1321	pDev->u16Status = 0;
1322	vusbDevDoSelectConfig(pDev, &g_Config0);
1323	if (!vusbDevIsRh(pDev))
1324	vusbDevSetAddress(pDev, VUSB_DEFAULT_ADDRESS);
1325	if (pfnDone)
1326	pfnDone(&pDev->IDevice, rc, pvUser);
1327	}
1328
1329
1330	/**
1331	* Timer callback for doing reset completion.
1332	*
1333	* @param pUsbIns The USB device instance.
1334	* @param pTimer The timer instance.
1335	* @param pvUser The VUSB device data.
1336	* @thread EMT
1337	*/
1338	static DECLCALLBACK(void) vusbDevResetDoneTimer(PPDMUSBINS pUsbIns, PTMTIMER pTimer, void *pvUser)
1339	{
1340	RT_NOREF(pUsbIns, pTimer);
1341	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1342	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)pDev->pvArgs;
1343	Assert(pDev->pUsbIns == pUsbIns);
1344
1345	AssertPtr(pArgs);
1346
1347	/*
1348	* Reset-done processing and cleanup.
1349	*/
1350	pDev->pvArgs = NULL;
1351	vusbDevResetDone(pDev, pArgs->rc, pArgs->pfnDone, pArgs->pvUser);
1352	RTMemFree(pArgs);
1353	}
1354
1355
1356	/**
1357	* Perform the actual reset.
1358	*
1359	* @thread EMT or a VUSB reset thread.
1360	*/
1361	static int vusbDevResetWorker(PVUSBDEV pDev, bool fResetOnLinux, bool fUseTimer, PVUSBRESETARGS pArgs)
1362	{
1363	int rc = VINF_SUCCESS;
1364	uint64_t u64EndTS = TMTimerGet(pDev->pResetTimer) + TMTimerFromMilli(pDev->pResetTimer, 10);
1365
1366	if (pDev->pUsbIns->pReg->pfnUsbReset)
1367	rc = pDev->pUsbIns->pReg->pfnUsbReset(pDev->pUsbIns, fResetOnLinux);
1368
1369	if (pArgs)
1370	{
1371	pArgs->rc = rc;
1372	rc = VINF_SUCCESS;
1373	}
1374
1375	if (fUseTimer)
1376	{
1377	/*
1378	* We use a timer to communicate the result back to EMT.
1379	* This avoids suspend + poweroff issues, and it should give
1380	* us more accurate scheduling than making this thread sleep.
1381	*/
1382	int rc2 = TMTimerSet(pDev->pResetTimer, u64EndTS);
1383	AssertReleaseRC(rc2);
1384	}
1385
1386	LogFlow(("vusbDevResetWorker: %s: returns %Rrc\n", pDev->pUsbIns->pszName, rc));
1387	return rc;
1388	}
1389
1390
1391	/**
1392	* Resets a device.
1393	*
1394	* Since a device reset shall take at least 10ms from the guest point of view,
1395	* it must be performed asynchronously. We create a thread which performs this
1396	* operation and ensures it will take at least 10ms.
1397	*
1398	* At times - like init - a synchronous reset is required, this can be done
1399	* by passing NULL for pfnDone.
1400	*
1401	* While the device is being reset it is in the VUSB_DEVICE_STATE_RESET state.
1402	* On completion it will be in the VUSB_DEVICE_STATE_DEFAULT state if successful,
1403	* or in the VUSB_DEVICE_STATE_DETACHED state if the rest failed.
1404	*
1405	* @returns VBox status code.
1406	*
1407	* @param pDevice Pointer to the VUSB device interface.
1408	* @param fResetOnLinux Whether it's safe to reset the device(s) on a linux
1409	* host system. See discussion of logical reconnects elsewhere.
1410	* @param pfnDone Pointer to the completion routine. If NULL a synchronous
1411	* reset is preformed not respecting the 10ms.
1412	* @param pvUser Opaque user data to pass to the done callback.
1413	* @param pVM Pointer to the VM handle for performing the done function
1414	* on the EMT thread.
1415	* @thread EMT
1416	*/
1417	static DECLCALLBACK(int) vusbIDeviceReset(PVUSBIDEVICE pDevice, bool fResetOnLinux,
1418	PFNVUSBRESETDONE pfnDone, void *pvUser, PVM pVM)
1419	{
1420	RT_NOREF(pVM);
1421	PVUSBDEV pDev = (PVUSBDEV)pDevice;
1422	Assert(!pfnDone \|\| pVM);
1423	LogFlow(("vusb: reset: [%s]/%i\n", pDev->pUsbIns->pszName, pDev->i16Port));
1424
1425	/*
1426	* Only one reset operation at a time.
1427	*/
1428	const VUSBDEVICESTATE enmStateOld = vusbDevSetState(pDev, VUSB_DEVICE_STATE_RESET);
1429	if (enmStateOld == VUSB_DEVICE_STATE_RESET)
1430	{
1431	LogRel(("VUSB: %s: reset request is ignored, the device is already resetting!\n", pDev->pUsbIns->pszName));
1432	return VERR_VUSB_DEVICE_IS_RESETTING;
1433	}
1434
1435	/*
1436	* First, cancel all async URBs.
1437	*/
1438	vusbDevCancelAllUrbs(pDev, false);
1439
1440	/* Async or sync? */
1441	if (pfnDone)
1442	{
1443	/*
1444	* Async fashion.
1445	*/
1446	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)RTMemTmpAlloc(sizeof(*pArgs));
1447	if (pArgs)
1448	{
1449	pArgs->pDev = pDev;
1450	pArgs->pfnDone = pfnDone;
1451	pArgs->pvUser = pvUser;
1452	pArgs->rc = VINF_SUCCESS;
1453	AssertPtrNull(pDev->pvArgs);
1454	pDev->pvArgs = pArgs;
1455	int rc = vusbDevIoThreadExec(pDev, 0 /* fFlags */, (PFNRT)vusbDevResetWorker, 4, pDev, fResetOnLinux, true, pArgs);
1456	if (RT_SUCCESS(rc))
1457	return rc;
1458
1459	RTMemTmpFree(pArgs);
1460	}
1461	/* fall back to sync on failure */
1462	}
1463
1464	/*
1465	* Sync fashion.
1466	*/
1467	int rc = vusbDevResetWorker(pDev, fResetOnLinux, false, NULL);
1468	vusbDevResetDone(pDev, rc, pfnDone, pvUser);
1469	return rc;
1470	}
1471
1472
1473	/**
1474	* Powers on the device.
1475	*
1476	* @returns VBox status code.
1477	* @param pInterface Pointer to the device interface structure.
1478	*/
1479	static DECLCALLBACK(int) vusbIDevicePowerOn(PVUSBIDEVICE pInterface)
1480	{
1481	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1482	LogFlow(("vusbDevPowerOn: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1483
1484	/*
1485	* Check that the device is in a valid state.
1486	*/
1487	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1488	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1489	{
1490	Log(("vusb: warning: attempt to power on detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1491	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1492	}
1493	if (enmState == VUSB_DEVICE_STATE_RESET)
1494	{
1495	LogRel(("VUSB: %s: power on ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1496	return VERR_VUSB_DEVICE_IS_RESETTING;
1497	}
1498
1499	/*
1500	* Do the job.
1501	*/
1502	if (enmState == VUSB_DEVICE_STATE_ATTACHED)
1503	vusbDevSetState(pDev, VUSB_DEVICE_STATE_POWERED);
1504
1505	return VINF_SUCCESS;
1506	}
1507
1508
1509	/**
1510	* Powers off the device.
1511	*
1512	* @returns VBox status code.
1513	* @param pInterface Pointer to the device interface structure.
1514	*/
1515	static DECLCALLBACK(int) vusbIDevicePowerOff(PVUSBIDEVICE pInterface)
1516	{
1517	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1518	LogFlow(("vusbDevPowerOff: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1519
1520	/*
1521	* Check that the device is in a valid state.
1522	*/
1523	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1524	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1525	{
1526	Log(("vusb: warning: attempt to power off detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1527	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1528	}
1529	if (enmState == VUSB_DEVICE_STATE_RESET)
1530	{
1531	LogRel(("VUSB: %s: power off ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1532	return VERR_VUSB_DEVICE_IS_RESETTING;
1533	}
1534
1535	/*
1536	* If it's a root hub, we will have to cancel all URBs and reap them.
1537	*/
1538	if (vusbDevIsRh(pDev))
1539	{
1540	PVUSBROOTHUB pRh = (PVUSBROOTHUB)pDev;
1541	VUSBIRhCancelAllUrbs(&pRh->IRhConnector);
1542	VUSBIRhReapAsyncUrbs(&pRh->IRhConnector, pInterface, 0);
1543	}
1544
1545	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ATTACHED);
1546	return VINF_SUCCESS;
1547	}
1548
1549
1550	/**
1551	* Get the state of the device.
1552	*
1553	* @returns Device state.
1554	* @param pInterface Pointer to the device interface structure.
1555	*/
1556	static DECLCALLBACK(VUSBDEVICESTATE) vusbIDeviceGetState(PVUSBIDEVICE pInterface)
1557	{
1558	return vusbDevGetState((PVUSBDEV)pInterface);
1559	}
1560
1561
1562	/**
1563	* @interface_method_impl{VUSBIDEVICE,pfnIsSavedStateSupported}
1564	*/
1565	static DECLCALLBACK(bool) vusbIDeviceIsSavedStateSupported(PVUSBIDEVICE pInterface)
1566	{
1567	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1568	bool fSavedStateSupported = RT_BOOL(pDev->pUsbIns->pReg->fFlags & PDM_USBREG_SAVED_STATE_SUPPORTED);
1569
1570	LogFlowFunc(("pInterface=%p\n", pInterface));
1571
1572	LogFlowFunc(("returns %RTbool\n", fSavedStateSupported));
1573	return fSavedStateSupported;
1574	}
1575
1576
1577	/**
1578	* @interface_method_impl{VUSBIDEVICE,pfnGetState}
1579	*/
1580	static DECLCALLBACK(VUSBSPEED) vusbIDeviceGetSpeed(PVUSBIDEVICE pInterface)
1581	{
1582	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1583	VUSBSPEED enmSpeed = pDev->pUsbIns->enmSpeed;
1584
1585	LogFlowFunc(("pInterface=%p, returns %u\n", pInterface, enmSpeed));
1586	return enmSpeed;
1587	}
1588
1589
1590	/**
1591	* The maximum number of interfaces the device can have in all of it's configuration.
1592	*
1593	* @returns Number of interfaces.
1594	* @param pDev The device.
1595	*/
1596	size_t vusbDevMaxInterfaces(PVUSBDEV pDev)
1597	{
1598	uint8_t cMax = 0;
1599	unsigned i = pDev->pDescCache->pDevice->bNumConfigurations;
1600	while (i-- > 0)
1601	{
1602	if (pDev->pDescCache->paConfigs[i].Core.bNumInterfaces > cMax)
1603	cMax = pDev->pDescCache->paConfigs[i].Core.bNumInterfaces;
1604	}
1605
1606	return cMax;
1607	}
1608
1609
1610	/**
1611	* Executes a given function on the I/O thread.
1612	*
1613	* @returns IPRT status code.
1614	* @param pDev The USB device instance data.
1615	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1616	* @param pfnFunction The function to execute.
1617	* @param cArgs Number of arguments to the function.
1618	* @param Args The parameter list.
1619	*
1620	* @remarks See remarks on RTReqQueueCallV
1621	*/
1622	DECLHIDDEN(int) vusbDevIoThreadExecV(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, va_list Args)
1623	{
1624	int rc = VINF_SUCCESS;
1625	PRTREQ hReq = NULL;
1626
1627	Assert(pDev->hUrbIoThread != NIL_RTTHREAD);
1628	if (RT_LIKELY(pDev->hUrbIoThread != NIL_RTTHREAD))
1629	{
1630	uint32_t fReqFlags = RTREQFLAGS_IPRT_STATUS;
1631
1632	if (!(fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1633	fReqFlags \|= RTREQFLAGS_NO_WAIT;
1634
1635	rc = RTReqQueueCallV(pDev->hReqQueueSync, &hReq, 0 /* cMillies */, fReqFlags, pfnFunction, cArgs, Args);
1636	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT);
1637
1638	/* In case we are called on the I/O thread just process the request. */
1639	if ( pDev->hUrbIoThread == RTThreadSelf()
1640	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1641	{
1642	int rc2 = RTReqQueueProcess(pDev->hReqQueueSync, 0);
1643	Assert(RT_SUCCESS(rc2) \|\| rc2 == VERR_TIMEOUT); NOREF(rc2);
1644	}
1645	else
1646	vusbDevUrbIoThreadWakeup(pDev);
1647
1648	if ( rc == VERR_TIMEOUT
1649	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1650	{
1651	rc = RTReqWait(hReq, RT_INDEFINITE_WAIT);
1652	AssertRC(rc);
1653	}
1654	RTReqRelease(hReq);
1655	}
1656	else
1657	rc = VERR_INVALID_STATE;
1658
1659	return rc;
1660	}
1661
1662
1663	/**
1664	* Executes a given function on the I/O thread.
1665	*
1666	* @returns IPRT status code.
1667	* @param pDev The USB device instance data.
1668	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1669	* @param pfnFunction The function to execute.
1670	* @param cArgs Number of arguments to the function.
1671	* @param ... The parameter list.
1672	*
1673	* @remarks See remarks on RTReqQueueCallV
1674	*/
1675	DECLHIDDEN(int) vusbDevIoThreadExec(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, ...)
1676	{
1677	int rc = VINF_SUCCESS;
1678	va_list va;
1679
1680	va_start(va, cArgs);
1681	rc = vusbDevIoThreadExecV(pDev, fFlags, pfnFunction, cArgs, va);
1682	va_end(va);
1683	return rc;
1684	}
1685
1686
1687	/**
1688	* Executes a given function synchronously on the I/O thread waiting for it to complete.
1689	*
1690	* @returns IPRT status code.
1691	* @param pDev The USB device instance data
1692	* @param pfnFunction The function to execute.
1693	* @param cArgs Number of arguments to the function.
1694	* @param ... The parameter list.
1695	*
1696	* @remarks See remarks on RTReqQueueCallV
1697	*/
1698	DECLHIDDEN(int) vusbDevIoThreadExecSync(PVUSBDEV pDev, PFNRT pfnFunction, unsigned cArgs, ...)
1699	{
1700	int rc = VINF_SUCCESS;
1701	va_list va;
1702
1703	va_start(va, cArgs);
1704	rc = vusbDevIoThreadExecV(pDev, VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC, pfnFunction, cArgs, va);
1705	va_end(va);
1706	return rc;
1707	}
1708
1709
1710	static DECLCALLBACK(int) vusbDevGetDescriptorCacheWorker(PPDMUSBINS pUsbIns, PCPDMUSBDESCCACHE *ppDescCache)
1711	{
1712	*ppDescCache = pUsbIns->pReg->pfnUsbGetDescriptorCache(pUsbIns);
1713	return VINF_SUCCESS;
1714	}
1715
1716	/**
1717	* Initialize a new VUSB device.
1718	*
1719	* @returns VBox status code.
1720	* @param pDev The VUSB device to initialize.
1721	* @param pUsbIns Pointer to the PDM USB Device instance.
1722	* @param pszCaptureFilename Optional fileame to capture the traffic to.
1723	*/
1724	int vusbDevInit(PVUSBDEV pDev, PPDMUSBINS pUsbIns, const char *pszCaptureFilename)
1725	{
1726	/*
1727	* Initialize the device data members.
1728	* (All that are Non-Zero at least.)
1729	*/
1730	Assert(!pDev->IDevice.pfnReset);
1731	Assert(!pDev->IDevice.pfnPowerOn);
1732	Assert(!pDev->IDevice.pfnPowerOff);
1733	Assert(!pDev->IDevice.pfnGetState);
1734	Assert(!pDev->IDevice.pfnIsSavedStateSupported);
1735
1736	pDev->IDevice.pfnReset = vusbIDeviceReset;
1737	pDev->IDevice.pfnPowerOn = vusbIDevicePowerOn;
1738	pDev->IDevice.pfnPowerOff = vusbIDevicePowerOff;
1739	pDev->IDevice.pfnGetState = vusbIDeviceGetState;
1740	pDev->IDevice.pfnIsSavedStateSupported = vusbIDeviceIsSavedStateSupported;
1741	pDev->IDevice.pfnGetSpeed = vusbIDeviceGetSpeed;
1742	pDev->pUsbIns = pUsbIns;
1743	pDev->pNext = NULL;
1744	pDev->pNextHash = NULL;
1745	pDev->pHub = NULL;
1746	pDev->enmState = VUSB_DEVICE_STATE_DETACHED;
1747	pDev->cRefs = 1;
1748	pDev->u8Address = VUSB_INVALID_ADDRESS;
1749	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
1750	pDev->i16Port = -1;
1751	pDev->u16Status = 0;
1752	pDev->pDescCache = NULL;
1753	pDev->pCurCfgDesc = NULL;
1754	pDev->paIfStates = NULL;
1755	RTListInit(&pDev->LstAsyncUrbs);
1756	memset(&pDev->aPipes[0], 0, sizeof(pDev->aPipes));
1757	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1758	{
1759	int rc = RTCritSectInit(&pDev->aPipes[i].CritSectCtrl);
1760	AssertRCReturn(rc, rc);
1761	}
1762	pDev->pResetTimer = NULL;
1763	pDev->hSniffer = VUSBSNIFFER_NIL;
1764
1765	int rc = RTCritSectInit(&pDev->CritSectAsyncUrbs);
1766	AssertRCReturn(rc, rc);
1767
1768	/* Create the URB pool. */
1769	rc = vusbUrbPoolInit(&pDev->UrbPool);
1770	AssertRCReturn(rc, rc);
1771
1772	/* Setup request queue executing synchronous tasks on the I/O thread. */
1773	rc = RTReqQueueCreate(&pDev->hReqQueueSync);
1774	AssertRCReturn(rc, rc);
1775
1776	/* Create I/O thread. */
1777	rc = vusbDevUrbIoThreadCreate(pDev);
1778	AssertRCReturn(rc, rc);
1779
1780	/*
1781	* Create the reset timer.
1782	*/
1783	rc = PDMUsbHlpTMTimerCreate(pDev->pUsbIns, TMCLOCK_VIRTUAL, vusbDevResetDoneTimer, pDev, 0 /fFlags/,
1784	"USB Device Reset Timer", &pDev->pResetTimer);
1785	AssertRCReturn(rc, rc);
1786
1787	if (pszCaptureFilename)
1788	{
1789	rc = VUSBSnifferCreate(&pDev->hSniffer, 0, pszCaptureFilename, NULL, NULL);
1790	AssertRCReturn(rc, rc);
1791	}
1792
1793	/*
1794	* Get the descriptor cache from the device. (shall cannot fail)
1795	*/
1796	rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevGetDescriptorCacheWorker, 2, pUsbIns, &pDev->pDescCache);
1797	AssertRC(rc);
1798	AssertPtr(pDev->pDescCache);
1799	#ifdef VBOX_STRICT
1800	if (pDev->pDescCache->fUseCachedStringsDescriptors)
1801	{
1802	int32_t iPrevId = -1;
1803	for (unsigned iLang = 0; iLang < pDev->pDescCache->cLanguages; iLang++)
1804	{
1805	Assert((int32_t)pDev->pDescCache->paLanguages[iLang].idLang > iPrevId);
1806	iPrevId = pDev->pDescCache->paLanguages[iLang].idLang;
1807
1808	int32_t idxPrevStr = -1;
1809	PCPDMUSBDESCCACHESTRING paStrings = pDev->pDescCache->paLanguages[iLang].paStrings;
1810	unsigned cStrings = pDev->pDescCache->paLanguages[iLang].cStrings;
1811	for (unsigned iStr = 0; iStr < cStrings; iStr++)
1812	{
1813	Assert((int32_t)paStrings[iStr].idx > idxPrevStr);
1814	idxPrevStr = paStrings[iStr].idx;
1815	size_t cch = strlen(paStrings[iStr].psz);
1816	Assert(cch <= 127);
1817	}
1818	}
1819	}
1820	#endif
1821
1822	/*
1823	* Allocate memory for the interface states.
1824	*/
1825	size_t cbIface = vusbDevMaxInterfaces(pDev) * sizeof(*pDev->paIfStates);
1826	pDev->paIfStates = (PVUSBINTERFACESTATE)RTMemAllocZ(cbIface);
1827	AssertMsgReturn(pDev->paIfStates, ("RTMemAllocZ(%d) failed\n", cbIface), VERR_NO_MEMORY);
1828
1829	return VINF_SUCCESS;
1830	}
1831
1832	/*
1833	* Local Variables:
1834	* mode: c
1835	* c-file-style: "bsd"
1836	* c-basic-offset: 4
1837	* tab-width: 4
1838	* indent-tabs-mode: s
1839	* End:
1840	*/
1841

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source: vbox/trunk/src/VBox/Devices/USB/VUSBDevice.cpp@ 66990

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