VUSBDevice.cpp@ 56292

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1	/* $Id: VUSBDevice.cpp 56292 2015-06-09 14:20:46Z vboxsync $ */
2	/** @file
3	* Virtual USB - Device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 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	* Structures and Typedefs *
40	*******************************************************************************/
41	/**
42	* Argument package of vusbDevResetThread().
43	*/
44	typedef struct vusb_reset_args
45	{
46	/** Pointer to the device which is being reset. */
47	PVUSBDEV pDev;
48	/** The reset return code. */
49	int rc;
50	/** Pointer to the completion callback. */
51	PFNVUSBRESETDONE pfnDone;
52	/** User argument to pfnDone. */
53	void *pvUser;
54	} VUSBRESETARGS, *PVUSBRESETARGS;
55
56
57	/*******************************************************************************
58	* Global Variables *
59	*******************************************************************************/
60	/** Default message pipe. */
61	const VUSBDESCENDPOINTEX g_Endpoint0 =
62	{
63	{
64	/* .bLength = */ VUSB_DT_ENDPOINT_MIN_LEN,
65	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
66	/* .bEndpointAddress = */ 0,
67	/* .bmAttributes = */ 0,
68	/* .wMaxPacketSize = */ 64,
69	/* .bInterval = */ 0
70	},
71	NULL
72	};
73
74	/** Default configuration. */
75	const VUSBDESCCONFIGEX g_Config0 =
76	{
77	{
78	/* .bLength = */ VUSB_DT_CONFIG_MIN_LEN,
79	/* .bDescriptorType = */ VUSB_DT_CONFIG,
80	/* .WTotalLength = / 0, / (auto-calculated) */
81	/* .bNumInterfaces = */ 0,
82	/* .bConfigurationValue =*/ 0,
83	/* .iConfiguration = */ 0,
84	/* .bmAttributes = */ 0x80,
85	/* .MaxPower = */ 14
86	},
87	NULL,
88	NULL
89	};
90
91
92
93	static PCVUSBDESCCONFIGEX vusbDevFindCfgDesc(PVUSBDEV pDev, int iCfg)
94	{
95	if (iCfg == 0)
96	return &g_Config0;
97
98	for (unsigned i = 0; i < pDev->pDescCache->pDevice->bNumConfigurations; i++)
99	if (pDev->pDescCache->paConfigs[i].Core.bConfigurationValue == iCfg)
100	return &pDev->pDescCache->paConfigs[i];
101	return NULL;
102	}
103
104	static PVUSBINTERFACESTATE vusbDevFindIfState(PVUSBDEV pDev, int iIf)
105	{
106	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
107	if (pDev->paIfStates[i].pIf->paSettings[0].Core.bInterfaceNumber == iIf)
108	return &pDev->paIfStates[i];
109	return NULL;
110	}
111
112	static PCVUSBDESCINTERFACEEX vusbDevFindAltIfDesc(PVUSBDEV pDev, PCVUSBINTERFACESTATE pIfState, int iAlt)
113	{
114	for (uint32_t i = 0; i < pIfState->pIf->cSettings; i++)
115	if (pIfState->pIf->paSettings[i].Core.bAlternateSetting == iAlt)
116	return &pIfState->pIf->paSettings[i];
117	return NULL;
118	}
119
120	void vusbDevMapEndpoint(PVUSBDEV pDev, PCVUSBDESCENDPOINTEX pEndPtDesc)
121	{
122	uint8_t i8Addr = pEndPtDesc->Core.bEndpointAddress & 0xF;
123	PVUSBPIPE pPipe = &pDev->aPipes[i8Addr];
124	LogFlow(("vusbDevMapEndpoint: pDev=%p[%s] pEndPtDesc=%p{.bEndpointAddress=%#x, .bmAttributes=%#x} p=%p stage %s->SETUP\n",
125	pDev, pDev->pUsbIns->pszName, pEndPtDesc, pEndPtDesc->Core.bEndpointAddress, pEndPtDesc->Core.bmAttributes,
126	pPipe, g_apszCtlStates[pPipe->pCtrl ? pPipe->pCtrl->enmStage : 3]));
127
128	if ((pEndPtDesc->Core.bmAttributes & 0x3) == 0)
129	{
130	Log(("vusb: map message pipe on address %u\n", i8Addr));
131	pPipe->in = pEndPtDesc;
132	pPipe->out = pEndPtDesc;
133	}
134	else if (pEndPtDesc->Core.bEndpointAddress & 0x80)
135	{
136	Log(("vusb: map input pipe on address %u\n", i8Addr));
137	pPipe->in = pEndPtDesc;
138
139	#if defined(RT_OS_LINUX) \|\| defined(RT_OS_SOLARIS) \|\| defined(RT_OS_DARWIN)
140	/*
141	* For high-speed isochronous input endpoints, spin off a read-ahead buffering thread.
142	*/
143	if ((pEndPtDesc->Core.bmAttributes & 0x03) == 1)
144	pPipe->hReadAhead = vusbReadAheadStart(pDev, pPipe);
145	#endif
146	}
147	else
148	{
149	Log(("vusb: map output pipe on address %u\n", i8Addr));
150	pPipe->out = pEndPtDesc;
151	}
152
153	if (pPipe->pCtrl)
154	{
155	vusbMsgFreeExtraData(pPipe->pCtrl);
156	pPipe->pCtrl = NULL;
157	}
158	}
159
160	static void unmap_endpoint(PVUSBDEV pDev, PCVUSBDESCENDPOINTEX pEndPtDesc)
161	{
162	uint8_t EndPt = pEndPtDesc->Core.bEndpointAddress & 0xF;
163	PVUSBPIPE pPipe = &pDev->aPipes[EndPt];
164	LogFlow(("unmap_endpoint: pDev=%p[%s] pEndPtDesc=%p{.bEndpointAddress=%#x, .bmAttributes=%#x} p=%p stage %s->SETUP\n",
165	pDev, pDev->pUsbIns->pszName, pEndPtDesc, pEndPtDesc->Core.bEndpointAddress, pEndPtDesc->Core.bmAttributes,
166	pPipe, g_apszCtlStates[pPipe->pCtrl ? pPipe->pCtrl->enmStage : 3]));
167
168	if ((pEndPtDesc->Core.bmAttributes & 0x3) == 0)
169	{
170	Log(("vusb: unmap MSG pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
171	pPipe->in = NULL;
172	pPipe->out = NULL;
173	}
174	else if (pEndPtDesc->Core.bEndpointAddress & 0x80)
175	{
176	Log(("vusb: unmap IN pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
177	pPipe->in = NULL;
178
179	/* If there was a read-ahead thread associated with this endpoint, tell it to go away. */
180	if (pPipe->hReadAhead)
181	{
182	Log(("vusb: and tell read-ahead thread for the endpoint to terminate\n"));
183	vusbReadAheadStop(pPipe->hReadAhead);
184	pPipe->hReadAhead = NULL;
185	}
186	}
187	else
188	{
189	Log(("vusb: unmap OUT pipe from address %u (%#x)\n", EndPt, pEndPtDesc->Core.bEndpointAddress));
190	pPipe->out = NULL;
191	}
192
193	if (pPipe->pCtrl)
194	{
195	vusbMsgFreeExtraData(pPipe->pCtrl);
196	pPipe->pCtrl = NULL;
197	}
198	}
199
200	static void map_interface(PVUSBDEV pDev, PCVUSBDESCINTERFACEEX pIfDesc)
201	{
202	LogFlow(("map_interface: pDev=%p[%s] pIfDesc=%p:{.iInterface=%d, .bAlternateSetting=%d}\n",
203	pDev, pDev->pUsbIns->pszName, pIfDesc, pIfDesc->Core.iInterface, pIfDesc->Core.bAlternateSetting));
204
205	for (unsigned i = 0; i < pIfDesc->Core.bNumEndpoints; i++)
206	{
207	if ((pIfDesc->paEndpoints[i].Core.bEndpointAddress & 0xF) == VUSB_PIPE_DEFAULT)
208	Log(("vusb: Endpoint 0x%x on interface %u.%u tried to override the default message pipe!!!\n",
209	pIfDesc->paEndpoints[i].Core.bEndpointAddress, pIfDesc->Core.bInterfaceNumber, pIfDesc->Core.bAlternateSetting));
210	else
211	vusbDevMapEndpoint(pDev, &pIfDesc->paEndpoints[i]);
212	}
213	}
214
215
216	/**
217	* Worker that resets the pipe data on select config and detach.
218	*
219	* This leaves the critical section unmolested
220	*
221	* @param pPipe The pipe which data should be reset.
222	*/
223	static void vusbDevResetPipeData(PVUSBPIPE pPipe)
224	{
225	vusbMsgFreeExtraData(pPipe->pCtrl);
226	pPipe->pCtrl = NULL;
227
228	if (pPipe->hReadAhead)
229	{
230	vusbReadAheadStop(pPipe->hReadAhead);
231	pPipe->hReadAhead = NULL;
232	}
233
234	RT_ZERO(pPipe->in);
235	RT_ZERO(pPipe->out);
236	pPipe->async = 0;
237	}
238
239
240	bool vusbDevDoSelectConfig(PVUSBDEV pDev, PCVUSBDESCCONFIGEX pCfgDesc)
241	{
242	LogFlow(("vusbDevDoSelectConfig: pDev=%p[%s] pCfgDesc=%p:{.iConfiguration=%d}\n",
243	pDev, pDev->pUsbIns->pszName, pCfgDesc, pCfgDesc->Core.iConfiguration));
244
245	/*
246	* Clean up all pipes and interfaces.
247	*/
248	unsigned i;
249	for (i = 0; i < VUSB_PIPE_MAX; i++)
250	if (i != VUSB_PIPE_DEFAULT)
251	vusbDevResetPipeData(&pDev->aPipes[i]);
252	memset(pDev->paIfStates, 0, pCfgDesc->Core.bNumInterfaces * sizeof(pDev->paIfStates[0]));
253
254	/*
255	* Map in the default setting for every interface.
256	*/
257	for (i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
258	{
259	PCVUSBINTERFACE pIf;
260	struct vusb_interface_state *pIfState;
261
262	pIf = &pCfgDesc->paIfs[i];
263	pIfState = &pDev->paIfStates[i];
264	pIfState->pIf = pIf;
265
266	/*
267	* Find the 0 setting, if it is not present we just use
268	* the lowest numbered one.
269	*/
270	for (uint32_t j = 0; j < pIf->cSettings; j++)
271	{
272	if ( !pIfState->pCurIfDesc
273	\|\| pIf->paSettings[j].Core.bAlternateSetting < pIfState->pCurIfDesc->Core.bAlternateSetting)
274	pIfState->pCurIfDesc = &pIf->paSettings[j];
275	if (pIfState->pCurIfDesc->Core.bAlternateSetting == 0)
276	break;
277	}
278
279	if (pIfState->pCurIfDesc)
280	map_interface(pDev, pIfState->pCurIfDesc);
281	}
282
283	pDev->pCurCfgDesc = pCfgDesc;
284
285	if (pCfgDesc->Core.bmAttributes & 0x40)
286	pDev->u16Status \|= (1 << VUSB_DEV_SELF_POWERED);
287	else
288	pDev->u16Status &= ~(1 << VUSB_DEV_SELF_POWERED);
289
290	return true;
291	}
292
293	/**
294	* Standard device request: SET_CONFIGURATION
295	* @returns success indicator.
296	*/
297	static bool vusbDevStdReqSetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
298	{
299	unsigned iCfg = pSetup->wValue & 0xff;
300
301	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
302	{
303	Log(("vusb: error: %s: SET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName, iCfg));
304	return false;
305	}
306
307	/*
308	* Check that the device is in a valid state.
309	* (The caller has already checked that it's not being reset.)
310	*/
311	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
312	if (enmState == VUSB_DEVICE_STATE_DEFAULT)
313	{
314	LogFlow(("vusbDevStdReqSetConfig: %s: default dev state !!?\n", pDev->pUsbIns->pszName));
315	return false;
316	}
317
318	PCVUSBDESCCONFIGEX pNewCfgDesc = vusbDevFindCfgDesc(pDev, iCfg);
319	if (!pNewCfgDesc)
320	{
321	Log(("vusb: error: %s: config %i not found !!!\n", pDev->pUsbIns->pszName, iCfg));
322	return false;
323	}
324
325	if (iCfg == 0)
326	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
327	else
328	vusbDevSetState(pDev, VUSB_DEVICE_STATE_CONFIGURED);
329	if (pDev->pUsbIns->pReg->pfnUsbSetConfiguration)
330	{
331	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetConfiguration, 5,
332	pDev->pUsbIns, pNewCfgDesc->Core.bConfigurationValue,
333	pDev->pCurCfgDesc, pDev->paIfStates, pNewCfgDesc);
334	if (RT_FAILURE(rc))
335	{
336	Log(("vusb: error: %s: failed to set config %i (%Rrc) !!!\n", pDev->pUsbIns->pszName, iCfg, rc));
337	return false;
338	}
339	}
340	Log(("vusb: %p[%s]: SET_CONFIGURATION: Selected config %u\n", pDev, pDev->pUsbIns->pszName, iCfg));
341	return vusbDevDoSelectConfig(pDev, pNewCfgDesc);
342	}
343
344
345	/**
346	* Standard device request: GET_CONFIGURATION
347	* @returns success indicator.
348	*/
349	static bool vusbDevStdReqGetConfig(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
350	{
351	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
352	{
353	Log(("vusb: error: %s: GET_CONFIGURATION - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
354	return false;
355	}
356
357	/*
358	* Check that the device is in a valid state.
359	* (The caller has already checked that it's not being reset.)
360	*/
361	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
362	if ( enmState != VUSB_DEVICE_STATE_CONFIGURED
363	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
364	{
365	LogFlow(("vusbDevStdReqGetConfig: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
366	return false;
367	}
368
369	if (*pcbBuf < 1)
370	{
371	LogFlow(("vusbDevStdReqGetConfig: %s: no space for data!\n", pDev->pUsbIns->pszName));
372	return true;
373	}
374
375	uint8_t iCfg;
376	if (enmState == VUSB_DEVICE_STATE_ADDRESS)
377	iCfg = 0;
378	else
379	iCfg = pDev->pCurCfgDesc->Core.bConfigurationValue;
380
381	*pbBuf = iCfg;
382	*pcbBuf = 1;
383	LogFlow(("vusbDevStdReqGetConfig: %s: returns iCfg=%d\n", pDev->pUsbIns->pszName, iCfg));
384	return true;
385	}
386
387	/**
388	* Standard device request: GET_INTERFACE
389	* @returns success indicator.
390	*/
391	static bool vusbDevStdReqGetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
392	{
393	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
394	{
395	Log(("vusb: error: %s: GET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
396	return false;
397	}
398
399	/*
400	* Check that the device is in a valid state.
401	* (The caller has already checked that it's not being reset.)
402	*/
403	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
404	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
405	{
406	LogFlow(("vusbDevStdReqGetInterface: error: %s: invalid device state %d!!!\n", pDev->pUsbIns->pszName, enmState));
407	return false;
408	}
409
410	if (*pcbBuf < 1)
411	{
412	LogFlow(("vusbDevStdReqGetInterface: %s: no space for data!\n", pDev->pUsbIns->pszName));
413	return true;
414	}
415
416	for (unsigned i = 0; i < pDev->pCurCfgDesc->Core.bNumInterfaces; i++)
417	{
418	PCVUSBDESCINTERFACEEX pIfDesc = pDev->paIfStates[i].pCurIfDesc;
419	if ( pIfDesc
420	&& pSetup->wIndex == pIfDesc->Core.bInterfaceNumber)
421	{
422	*pbBuf = pIfDesc->Core.bAlternateSetting;
423	*pcbBuf = 1;
424	Log(("vusb: %s: GET_INTERFACE: %u.%u\n", pDev->pUsbIns->pszName, pIfDesc->Core.bInterfaceNumber, *pbBuf));
425	return true;
426	}
427	}
428
429	Log(("vusb: error: %s: GET_INTERFACE - unknown iface %u !!!\n", pDev->pUsbIns->pszName, pSetup->wIndex));
430	return false;
431	}
432
433	/**
434	* Standard device request: SET_INTERFACE
435	* @returns success indicator.
436	*/
437	static bool vusbDevStdReqSetInterface(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
438	{
439	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_INTERFACE)
440	{
441	Log(("vusb: error: %s: SET_INTERFACE - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
442	return false;
443	}
444
445	/*
446	* Check that the device is in a valid state.
447	* (The caller has already checked that it's not being reset.)
448	*/
449	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
450	if (enmState != VUSB_DEVICE_STATE_CONFIGURED)
451	{
452	LogFlow(("vusbDevStdReqSetInterface: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
453	return false;
454	}
455
456	/*
457	* Find the interface.
458	*/
459	uint8_t iIf = pSetup->wIndex;
460	PVUSBINTERFACESTATE pIfState = vusbDevFindIfState(pDev, iIf);
461	if (!pIfState)
462	{
463	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find interface %u !!!\n", pDev->pUsbIns->pszName, iIf));
464	return false;
465	}
466	uint8_t iAlt = pSetup->wValue;
467	PCVUSBDESCINTERFACEEX pIfDesc = vusbDevFindAltIfDesc(pDev, pIfState, iAlt);
468	if (!pIfDesc)
469	{
470	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u !!!\n", pDev->pUsbIns->pszName, iIf, iAlt));
471	return false;
472	}
473
474	if (pDev->pUsbIns->pReg->pfnUsbSetInterface)
475	{
476	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbSetInterface, 3, pDev->pUsbIns, iIf, iAlt);
477	if (RT_FAILURE(rc))
478	{
479	LogFlow(("vusbDevStdReqSetInterface: error: %s: couldn't find alt interface %u.%u (%Rrc)\n", pDev->pUsbIns->pszName, iIf, iAlt, rc));
480	return false;
481	}
482	}
483
484	for (unsigned i = 0; i < pIfState->pCurIfDesc->Core.bNumEndpoints; i++)
485	unmap_endpoint(pDev, &pIfState->pCurIfDesc->paEndpoints[i]);
486
487	Log(("vusb: SET_INTERFACE: Selected %u.%u\n", iIf, iAlt));
488
489	map_interface(pDev, pIfDesc);
490	pIfState->pCurIfDesc = pIfDesc;
491
492	return true;
493	}
494
495	/**
496	* Standard device request: SET_ADDRESS
497	* @returns success indicator.
498	*/
499	static bool vusbDevStdReqSetAddress(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
500	{
501	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) != VUSB_TO_DEVICE)
502	{
503	Log(("vusb: error: %s: SET_ADDRESS - invalid request (dir) !!!\n", pDev->pUsbIns->pszName));
504	return false;
505	}
506
507	/*
508	* Check that the device is in a valid state.
509	* (The caller has already checked that it's not being reset.)
510	*/
511	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
512	if ( enmState != VUSB_DEVICE_STATE_DEFAULT
513	&& enmState != VUSB_DEVICE_STATE_ADDRESS)
514	{
515	LogFlow(("vusbDevStdReqSetAddress: error: %s: invalid device state %d !!!\n", pDev->pUsbIns->pszName, enmState));
516	return false;
517	}
518
519	pDev->u8NewAddress = pSetup->wValue;
520	return true;
521	}
522
523	/**
524	* Standard device request: CLEAR_FEATURE
525	* @returns success indicator.
526	*
527	* @remark This is only called for VUSB_TO_ENDPOINT && ep == 0 && wValue == ENDPOINT_HALT.
528	* All other cases of CLEAR_FEATURE is handled in the normal async/sync manner.
529	*/
530	static bool vusbDevStdReqClearFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
531	{
532	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
533	{
534	case VUSB_TO_DEVICE:
535	Log(("vusb: ClearFeature: dev(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
536	break;
537	case VUSB_TO_INTERFACE:
538	Log(("vusb: ClearFeature: iface(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
539	break;
540	case VUSB_TO_ENDPOINT:
541	Log(("vusb: ClearFeature: ep(%u): selector=%u\n", pSetup->wIndex, pSetup->wValue));
542	if ( !EndPt /* Default control pipe only */
543	&& pSetup->wValue == 0 /* ENDPOINT_HALT */
544	&& pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint)
545	{
546	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)pDev->pUsbIns->pReg->pfnUsbClearHaltedEndpoint,
547	2, pDev->pUsbIns, pSetup->wIndex);
548	return RT_SUCCESS(rc);
549	}
550	break;
551	default:
552	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
553	break;
554	}
555
556	AssertMsgFailed(("Invalid safe check !!!\n"));
557	return false;
558	}
559
560	/**
561	* Standard device request: SET_FEATURE
562	* @returns success indicator.
563	*/
564	static bool vusbDevStdReqSetFeature(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
565	{
566	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
567	{
568	case VUSB_TO_DEVICE:
569	Log(("vusb: SetFeature: dev(%u): selector=%u\n",
570	pSetup->wIndex, pSetup->wValue));
571	break;
572	case VUSB_TO_INTERFACE:
573	Log(("vusb: SetFeature: if(%u): selector=%u\n",
574	pSetup->wIndex, pSetup->wValue));
575	break;
576	case VUSB_TO_ENDPOINT:
577	Log(("vusb: SetFeature: ep(%u): selector=%u\n",
578	pSetup->wIndex, pSetup->wValue));
579	break;
580	default:
581	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
582	return false;
583	}
584	AssertMsgFailed(("This stuff is bogus\n"));
585	return false;
586	}
587
588	static bool vusbDevStdReqGetStatus(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
589	{
590	if (*pcbBuf != 2)
591	{
592	LogFlow(("vusbDevStdReqGetStatus: %s: buffer is too small! (%d)\n", pDev->pUsbIns->pszName, *pcbBuf));
593	return false;
594	}
595
596	uint16_t u16Status;
597	switch (pSetup->bmRequestType & VUSB_RECIP_MASK)
598	{
599	case VUSB_TO_DEVICE:
600	u16Status = pDev->u16Status;
601	LogFlow(("vusbDevStdReqGetStatus: %s: device status %#x (%d)\n", pDev->pUsbIns->pszName, u16Status, u16Status));
602	break;
603	case VUSB_TO_INTERFACE:
604	u16Status = 0;
605	LogFlow(("vusbDevStdReqGetStatus: %s: bogus interface status request!!\n", pDev->pUsbIns->pszName));
606	break;
607	case VUSB_TO_ENDPOINT:
608	u16Status = 0;
609	LogFlow(("vusbDevStdReqGetStatus: %s: bogus endpoint status request!!\n", pDev->pUsbIns->pszName));
610	break;
611	default:
612	AssertMsgFailed(("VUSB_TO_OTHER!\n"));
613	return false;
614	}
615
616	(uint16_t )pbBuf = u16Status;
617	return true;
618	}
619
620
621	/**
622	* Finds a cached string.
623	*
624	* @returns Pointer to the cached string if found. NULL if not.
625	* @param paLanguages The languages to search.
626	* @param cLanguages The number of languages in the table.
627	* @param idLang The language ID.
628	* @param iString The string index.
629	*/
630	static PCPDMUSBDESCCACHESTRING FindCachedString(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
631	uint16_t idLang, uint8_t iString)
632	{
633	/** @todo binary lookups! */
634	unsigned iCurLang = cLanguages;
635	while (iCurLang-- > 0)
636	if (paLanguages[iCurLang].idLang == idLang)
637	{
638	PCPDMUSBDESCCACHESTRING paStrings = paLanguages[iCurLang].paStrings;
639	unsigned iCurStr = paLanguages[iCurLang].cStrings;
640	while (iCurStr-- > 0)
641	if (paStrings[iCurStr].idx == iString)
642	return &paStrings[iCurStr];
643	break;
644	}
645	return NULL;
646	}
647
648
649	/** Macro for copying descriptor data. */
650	#define COPY_DATA(pbDst, cbLeft, pvSrc, cbSrc) \
651	do { \
652	uint32_t cbSrc_ = cbSrc; \
653	uint32_t cbCopy = RT_MIN(cbLeft, cbSrc_); \
654	memcpy(pbBuf, pvSrc, cbCopy); \
655	cbLeft -= cbCopy; \
656	if (!cbLeft) \
657	return; \
658	pbBuf += cbCopy; \
659	} while (0)
660
661	/**
662	* Internal function for reading the language IDs.
663	*/
664	static void ReadCachedStringDesc(PCPDMUSBDESCCACHESTRING pString, uint8_t pbBuf, uint32_t pcbBuf)
665	{
666	uint32_t cbLeft = *pcbBuf;
667
668	RTUTF16 wsz[128]; /* 128-1 => bLength=0xff */
669	PRTUTF16 pwsz = wsz;
670	size_t cwc;
671	int rc = RTStrToUtf16Ex(pString->psz, RT_ELEMENTS(wsz) - 1, &pwsz, RT_ELEMENTS(wsz), &cwc);
672	if (RT_FAILURE(rc))
673	{
674	AssertRC(rc);
675	wsz[0] = 'e';
676	wsz[1] = 'r';
677	wsz[2] = 'r';
678	cwc = 3;
679	}
680
681	VUSBDESCSTRING StringDesc;
682	StringDesc.bLength = (uint8_t)(sizeof(StringDesc) + cwc * sizeof(RTUTF16));
683	StringDesc.bDescriptorType = VUSB_DT_STRING;
684	COPY_DATA(pbBuf, cbLeft, &StringDesc, sizeof(StringDesc));
685	COPY_DATA(pbBuf, cbLeft, wsz, (uint32_t)cwc * sizeof(RTUTF16));
686
687	/* updated the size of the output buffer. */
688	*pcbBuf -= cbLeft;
689	}
690
691
692	/**
693	* Internal function for reading the language IDs.
694	*/
695	static void ReadCachedLangIdDesc(PCPDMUSBDESCCACHELANG paLanguages, unsigned cLanguages,
696	uint8_t pbBuf, uint32_t pcbBuf)
697	{
698	uint32_t cbLeft = *pcbBuf;
699
700	VUSBDESCLANGID LangIdDesc;
701	size_t cbDesc = sizeof(LangIdDesc) + cLanguages * sizeof(paLanguages[0].idLang);
702	LangIdDesc.bLength = (uint8_t)RT_MIN(0xff, cbDesc);
703	LangIdDesc.bDescriptorType = VUSB_DT_STRING;
704	COPY_DATA(pbBuf, cbLeft, &LangIdDesc, sizeof(LangIdDesc));
705
706	unsigned iLanguage = cLanguages;
707	while (iLanguage-- > 0)
708	COPY_DATA(pbBuf, cbLeft, &paLanguages[iLanguage].idLang, sizeof(paLanguages[iLanguage].idLang));
709
710	/* updated the size of the output buffer. */
711	*pcbBuf -= cbLeft;
712	}
713
714
715	/**
716	* Internal function which performs a descriptor read on the cached descriptors.
717	*/
718	static void ReadCachedConfigDesc(PCVUSBDESCCONFIGEX pCfgDesc, uint8_t pbBuf, uint32_t pcbBuf)
719	{
720	uint32_t cbLeft = *pcbBuf;
721
722	/** @todo See @bugref{2693} */
723	/*
724	* Make a copy of the config descriptor and calculate the wTotalLength field.
725	*/
726	VUSBDESCCONFIG CfgDesc;
727	memcpy(&CfgDesc, pCfgDesc, VUSB_DT_CONFIG_MIN_LEN);
728	uint32_t cbTotal = pCfgDesc->Core.bLength;
729	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
730	{
731	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
732	for (uint32_t j = 0; j < pIf->cSettings; j++)
733	{
734	cbTotal += pIf->paSettings[j].cbIAD;
735	cbTotal += pIf->paSettings[j].Core.bLength;
736	cbTotal += pIf->paSettings[j].cbClass;
737	for (unsigned k = 0; k < pIf->paSettings[j].Core.bNumEndpoints; k++)
738	{
739	cbTotal += pIf->paSettings[j].paEndpoints[k].Core.bLength;
740	cbTotal += pIf->paSettings[j].paEndpoints[k].cbSsepc;
741	cbTotal += pIf->paSettings[j].paEndpoints[k].cbClass;
742	}
743	}
744	}
745	CfgDesc.wTotalLength = RT_H2LE_U16(cbTotal);
746
747	/*
748	* Copy the config descriptor
749	*/
750	COPY_DATA(pbBuf, cbLeft, &CfgDesc, VUSB_DT_CONFIG_MIN_LEN);
751	COPY_DATA(pbBuf, cbLeft, pCfgDesc->pvMore, pCfgDesc->Core.bLength - VUSB_DT_CONFIG_MIN_LEN);
752
753	/*
754	* Copy out all the interfaces for this configuration
755	*/
756	for (unsigned i = 0; i < pCfgDesc->Core.bNumInterfaces; i++)
757	{
758	PCVUSBINTERFACE pIf = &pCfgDesc->paIfs[i];
759	for (uint32_t j = 0; j < pIf->cSettings; j++)
760	{
761	PCVUSBDESCINTERFACEEX pIfDesc = &pIf->paSettings[j];
762
763	COPY_DATA(pbBuf, cbLeft, pIfDesc->pIAD, pIfDesc->cbIAD);
764	COPY_DATA(pbBuf, cbLeft, pIfDesc, VUSB_DT_INTERFACE_MIN_LEN);
765	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvMore, pIfDesc->Core.bLength - VUSB_DT_INTERFACE_MIN_LEN);
766	COPY_DATA(pbBuf, cbLeft, pIfDesc->pvClass, pIfDesc->cbClass);
767
768	/*
769	* Copy out all the endpoints for this interface
770	*/
771	for (unsigned k = 0; k < pIfDesc->Core.bNumEndpoints; k++)
772	{
773	VUSBDESCENDPOINT EndPtDesc;
774	memcpy(&EndPtDesc, &pIfDesc->paEndpoints[k], VUSB_DT_ENDPOINT_MIN_LEN);
775	EndPtDesc.wMaxPacketSize = RT_H2LE_U16(EndPtDesc.wMaxPacketSize);
776
777	COPY_DATA(pbBuf, cbLeft, &EndPtDesc, VUSB_DT_ENDPOINT_MIN_LEN);
778	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvMore, EndPtDesc.bLength - VUSB_DT_ENDPOINT_MIN_LEN);
779	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvSsepc, pIfDesc->paEndpoints[k].cbSsepc);
780	COPY_DATA(pbBuf, cbLeft, pIfDesc->paEndpoints[k].pvClass, pIfDesc->paEndpoints[k].cbClass);
781	}
782	}
783	}
784
785	/* updated the size of the output buffer. */
786	*pcbBuf -= cbLeft;
787	}
788
789	/**
790	* Internal function which performs a descriptor read on the cached descriptors.
791	*/
792	static void ReadCachedDeviceDesc(PCVUSBDESCDEVICE pDevDesc, uint8_t pbBuf, uint32_t pcbBuf)
793	{
794	uint32_t cbLeft = *pcbBuf;
795
796	/*
797	* Duplicate the device description and update some fields we keep in cpu type.
798	*/
799	Assert(sizeof(VUSBDESCDEVICE) == 18);
800	VUSBDESCDEVICE DevDesc = *pDevDesc;
801	DevDesc.bcdUSB = RT_H2LE_U16(DevDesc.bcdUSB);
802	DevDesc.idVendor = RT_H2LE_U16(DevDesc.idVendor);
803	DevDesc.idProduct = RT_H2LE_U16(DevDesc.idProduct);
804	DevDesc.bcdDevice = RT_H2LE_U16(DevDesc.bcdDevice);
805
806	COPY_DATA(pbBuf, cbLeft, &DevDesc, sizeof(DevDesc));
807	COPY_DATA(pbBuf, cbLeft, pDevDesc + 1, pDevDesc->bLength - sizeof(DevDesc));
808
809	/* updated the size of the output buffer. */
810	*pcbBuf -= cbLeft;
811	}
812
813	#undef COPY_DATA
814
815	/**
816	* Standard device request: GET_DESCRIPTOR
817	* @returns success indicator.
818	* @remark not really used yet as we consider GET_DESCRIPTOR 'safe'.
819	*/
820	static bool vusbDevStdReqGetDescriptor(PVUSBDEV pDev, int EndPt, PVUSBSETUP pSetup, uint8_t pbBuf, uint32_t pcbBuf)
821	{
822	if ((pSetup->bmRequestType & VUSB_RECIP_MASK) == VUSB_TO_DEVICE)
823	{
824	switch (pSetup->wValue >> 8)
825	{
826	case VUSB_DT_DEVICE:
827	ReadCachedDeviceDesc(pDev->pDescCache->pDevice, pbBuf, pcbBuf);
828	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of device descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
829	return true;
830
831	case VUSB_DT_CONFIG:
832	{
833	unsigned int iIndex = (pSetup->wValue & 0xff);
834	if (iIndex >= pDev->pDescCache->pDevice->bNumConfigurations)
835	{
836	LogFlow(("vusbDevStdReqGetDescriptor: %s: iIndex=%p >= bNumConfigurations=%d !!!\n",
837	pDev->pUsbIns->pszName, iIndex, pDev->pDescCache->pDevice->bNumConfigurations));
838	return false;
839	}
840	ReadCachedConfigDesc(&pDev->pDescCache->paConfigs[iIndex], pbBuf, pcbBuf);
841	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of config descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
842	return true;
843	}
844
845	case VUSB_DT_STRING:
846	{
847	if (pSetup->wIndex == 0)
848	{
849	ReadCachedLangIdDesc(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages, pbBuf, pcbBuf);
850	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of language ID (string) descriptors\n", pDev->pUsbIns->pszName, *pcbBuf));
851	return true;
852	}
853	PCPDMUSBDESCCACHESTRING pString;
854	pString = FindCachedString(pDev->pDescCache->paLanguages, pDev->pDescCache->cLanguages,
855	pSetup->wIndex, pSetup->wValue & 0xff);
856	if (pString)
857	{
858	ReadCachedStringDesc(pString, pbBuf, pcbBuf);
859	LogFlow(("vusbDevStdReqGetDescriptor: %s: %u bytes of string descriptors \"%s\"\n",
860	pDev->pUsbIns->pszName, *pcbBuf, pString->psz));
861	return true;
862	}
863	break;
864	}
865
866	default:
867	break;
868	}
869	}
870	Log(("vusb: %s: warning: unknown descriptor: type=%u descidx=%u lang=%u len=%u!!!\n",
871	pDev->pUsbIns->pszName, pSetup->wValue >> 8, pSetup->wValue & 0xff, pSetup->wIndex, pSetup->wLength));
872	return false;
873	}
874
875
876	/**
877	* Service the standard USB requests.
878	*
879	* Devices may call this from controlmsg() if you want vusb core to handle your standard
880	* request, it's not necessary - you could handle them manually
881	*
882	* @param pDev The device.
883	* @param EndPoint The endpoint.
884	* @param pSetup Pointer to the setup request structure.
885	* @param pvBuf Buffer?
886	* @param pcbBuf ?
887	*/
888	bool vusbDevStandardRequest(PVUSBDEV pDev, int EndPoint, PVUSBSETUP pSetup, void pvBuf, uint32_t pcbBuf)
889	{
890	static bool (* const s_apfnStdReq[VUSB_REQ_MAX])(PVUSBDEV, int, PVUSBSETUP, uint8_t , uint32_t ) =
891	{
892	vusbDevStdReqGetStatus,
893	vusbDevStdReqClearFeature,
894	NULL,
895	vusbDevStdReqSetFeature,
896	NULL,
897	vusbDevStdReqSetAddress,
898	vusbDevStdReqGetDescriptor,
899	NULL,
900	vusbDevStdReqGetConfig,
901	vusbDevStdReqSetConfig,
902	vusbDevStdReqGetInterface,
903	vusbDevStdReqSetInterface,
904	NULL /* for iso */
905	};
906
907	/*
908	* Check that the device is in a valid state.
909	*/
910	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
911	if (enmState == VUSB_DEVICE_STATE_RESET)
912	{
913	LogRel(("VUSB: %s: standard control message ignored, the device is resetting\n", pDev->pUsbIns->pszName));
914	return false;
915	}
916
917	/*
918	* Do the request if it's one we want to deal with.
919	*/
920	if ( pSetup->bRequest >= VUSB_REQ_MAX
921	\|\| !s_apfnStdReq[pSetup->bRequest])
922	{
923	Log(("vusb: warning: standard req not implemented: message %u: val=%u idx=%u len=%u !!!\n",
924	pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
925	return false;
926	}
927
928	return s_apfnStdReq[pSetup->bRequest](pDev, EndPoint, pSetup, (uint8_t *)pvBuf, pcbBuf);
929	}
930
931
932	/**
933	* Add a device to the address hash
934	*/
935	static void vusbDevAddressHash(PVUSBDEV pDev)
936	{
937	if (pDev->u8Address == VUSB_INVALID_ADDRESS)
938	return;
939	uint8_t u8Hash = vusbHashAddress(pDev->u8Address);
940	pDev->pNextHash = pDev->pHub->pRootHub->apAddrHash[u8Hash];
941	pDev->pHub->pRootHub->apAddrHash[u8Hash] = pDev;
942	}
943
944	/**
945	* Remove a device from the address hash
946	*/
947	static void vusbDevAddressUnHash(PVUSBDEV pDev)
948	{
949	if (pDev->u8Address == VUSB_INVALID_ADDRESS)
950	return;
951
952	uint8_t u8Hash = vusbHashAddress(pDev->u8Address);
953	pDev->u8Address = VUSB_INVALID_ADDRESS;
954	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
955
956	PVUSBDEV pCur = pDev->pHub->pRootHub->apAddrHash[u8Hash];
957	if (pCur == pDev)
958	{
959	/* special case, we're at the head */
960	pDev->pHub->pRootHub->apAddrHash[u8Hash] = pDev->pNextHash;
961	pDev->pNextHash = NULL;
962	}
963	else
964	{
965	/* search the list */
966	PVUSBDEV pPrev;
967	for (pPrev = pCur, pCur = pCur->pNextHash;
968	pCur;
969	pPrev = pCur, pCur = pCur->pNextHash)
970	{
971	if (pCur == pDev)
972	{
973	pPrev->pNextHash = pCur->pNextHash;
974	pDev->pNextHash = NULL;
975	break;
976	}
977	}
978	}
979	}
980
981	/**
982	* Sets the address of a device.
983	*
984	* Called by status_completion() and vusbDevResetWorker().
985	*/
986	void vusbDevSetAddress(PVUSBDEV pDev, uint8_t u8Address)
987	{
988	LogFlow(("vusbDevSetAddress: pDev=%p[%s]/%i u8Address=%#x\n",
989	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
990
991	/*
992	* Check that the device is in a valid state.
993	*/
994	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
995	VUSBDEV_ASSERT_VALID_STATE(enmState);
996	if ( enmState == VUSB_DEVICE_STATE_ATTACHED
997	\|\| enmState == VUSB_DEVICE_STATE_DETACHED)
998	{
999	LogFlow(("vusbDevSetAddress: %s: fails because %d < POWERED\n", pDev->pUsbIns->pszName, pDev->enmState));
1000	return;
1001	}
1002	if (enmState == VUSB_DEVICE_STATE_RESET)
1003	{
1004	LogRel(("VUSB: %s: set address ignored, the device is resetting\n", pDev->pUsbIns->pszName));
1005	return;
1006	}
1007
1008	/*
1009	* Ok, get on with it.
1010	*/
1011	if (pDev->u8Address == u8Address)
1012	return;
1013
1014	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1015	AssertPtrReturnVoid(pRh);
1016
1017	vusbDevAddressUnHash(pDev);
1018
1019	if (u8Address == VUSB_DEFAULT_ADDRESS)
1020	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DEFAULT);
1021	else
1022	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ADDRESS);
1023
1024	pDev->u8Address = u8Address;
1025	vusbDevAddressHash(pDev);
1026
1027	Log(("vusb: %p[%s]/%i: Assigned address %u\n",
1028	pDev, pDev->pUsbIns->pszName, pDev->i16Port, u8Address));
1029	}
1030
1031
1032	static DECLCALLBACK(int) vusbDevCancelAllUrbsWorker(PVUSBDEV pDev, bool fDetaching)
1033	{
1034	/*
1035	* Iterate the URBs and cancel them.
1036	*/
1037	RTCritSectEnter(&pDev->CritSectAsyncUrbs);
1038	PVUSBURB pUrb = pDev->pAsyncUrbHead;
1039	while (pUrb)
1040	{
1041	PVUSBURB pNext = pUrb->VUsb.pNext;
1042
1043	Assert(pUrb->VUsb.pDev == pDev);
1044
1045	LogFlow(("%s: vusbDevCancelAllUrbs: CANCELING URB\n", pUrb->pszDesc));
1046	int rc = vusbUrbCancelWorker(pUrb, CANCELMODE_FAIL);
1047	AssertRC(rc);
1048	pUrb = pNext;
1049	}
1050
1051	/*
1052	* Reap any URBs which became ripe during cancel now.
1053	*/
1054	unsigned cReaped;
1055	do
1056	{
1057	cReaped = 0;
1058	pUrb = pDev->pAsyncUrbHead;
1059	while (pUrb)
1060	{
1061	PVUSBURB pNext = pUrb->VUsb.pNext;
1062	Assert(pUrb->VUsb.pDev == pDev);
1063
1064	PVUSBURB pRipe = NULL;
1065	if (pUrb->enmState == VUSBURBSTATE_REAPED)
1066	pRipe = pUrb;
1067	else if (pUrb->enmState == VUSBURBSTATE_CANCELLED)
1068	#ifdef RT_OS_WINDOWS /** @todo Windows doesn't do cancelling, thus this kludge to prevent really bad
1069	* things from happening if we leave a pending URB behinds. */
1070	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 1500 : 0 /ms/);
1071	#else
1072	pRipe = pDev->pUsbIns->pReg->pfnUrbReap(pDev->pUsbIns, fDetaching ? 10 : 0 /ms/);
1073	#endif
1074	else
1075	AssertMsgFailed(("pUrb=%p enmState=%d\n", pUrb, pUrb->enmState));
1076	if (pRipe)
1077	{
1078	if (pRipe == pNext)
1079	pNext = pNext->VUsb.pNext;
1080	vusbUrbRipe(pRipe);
1081	cReaped++;
1082	}
1083
1084	pUrb = pNext;
1085	}
1086	} while (cReaped > 0);
1087
1088	/*
1089	* If we're detaching, we'll have to orphan any leftover URBs.
1090	*/
1091	if (fDetaching)
1092	{
1093	pUrb = pDev->pAsyncUrbHead;
1094	while (pUrb)
1095	{
1096	PVUSBURB pNext = pUrb->VUsb.pNext;
1097	Assert(pUrb->VUsb.pDev == pDev);
1098
1099	AssertMsgFailed(("%s: Leaking left over URB! state=%d pDev=%p[%s]\n",
1100	pUrb->pszDesc, pUrb->enmState, pDev, pDev->pUsbIns->pszName));
1101	vusbUrbUnlink(pUrb);
1102	/* Unlink isn't enough, because boundary timer and detaching will try to reap it.
1103	* It was tested with MSD & iphone attachment to vSMP guest, if
1104	* it breaks anything, please add comment here, why we should unlink only.
1105	*/
1106	pUrb->VUsb.pfnFree(pUrb);
1107	pUrb = pNext;
1108	}
1109	}
1110	RTCritSectLeave(&pDev->CritSectAsyncUrbs);
1111	return VINF_SUCCESS;
1112	}
1113
1114	/**
1115	* Cancels and completes (with CRC failure) all async URBs pending
1116	* on a device. This is typically done as part of a reset and
1117	* before detaching a device.
1118	*
1119	* @param fDetaching If set, we will unconditionally unlink (and leak)
1120	* any URBs which isn't reaped.
1121	*/
1122	static void vusbDevCancelAllUrbs(PVUSBDEV pDev, bool fDetaching)
1123	{
1124	int rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevCancelAllUrbsWorker, 2, pDev, fDetaching);
1125	AssertRC(rc);
1126	}
1127
1128
1129	static DECLCALLBACK(int) vusbDevUrbIoThread(RTTHREAD hThread, void *pvUser)
1130	{
1131	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1132
1133	/* Notify the starter that we are up and running. */
1134	RTThreadUserSignal(hThread);
1135
1136	LogFlowFunc(("Entering work loop\n"));
1137
1138	while (!ASMAtomicReadBool(&pDev->fTerminate))
1139	{
1140	if (vusbDevGetState(pDev) != VUSB_DEVICE_STATE_RESET)
1141	vusbUrbDoReapAsyncDev(pDev, RT_INDEFINITE_WAIT);
1142
1143	/* Process any URBs waiting to be cancelled first. */
1144	int rc = RTReqQueueProcess(pDev->hReqQueueSync, 0); /* Don't wait if there is nothing to do. */
1145	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT);
1146	}
1147
1148	return VINF_SUCCESS;
1149	}
1150
1151	int vusbDevUrbIoThreadWakeup(PVUSBDEV pDev)
1152	{
1153	ASMAtomicXchgBool(&pDev->fWokenUp, true);
1154	return pDev->pUsbIns->pReg->pfnWakeup(pDev->pUsbIns);
1155	}
1156
1157	/**
1158	* Create the URB I/O thread.
1159	*
1160	* @returns VBox status code.
1161	* @param pDev The VUSB device.
1162	*/
1163	int vusbDevUrbIoThreadCreate(PVUSBDEV pDev)
1164	{
1165	int rc = VINF_SUCCESS;
1166
1167	ASMAtomicXchgBool(&pDev->fTerminate, false);
1168	rc = RTThreadCreateF(&pDev->hUrbIoThread, vusbDevUrbIoThread, pDev, 0, RTTHREADTYPE_IO,
1169	RTTHREADFLAGS_WAITABLE, "%s-%d", pDev->pUsbIns->pReg->szName,
1170	pDev->pUsbIns->iInstance);
1171	if (RT_SUCCESS(rc))
1172	{
1173	/* Wait for it to become active. */
1174	rc = RTThreadUserWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT);
1175	}
1176
1177	return rc;
1178	}
1179
1180	/**
1181	* Destro the URB I/O thread.
1182	*
1183	* @returns VBox status code.
1184	* @param pDev The VUSB device.
1185	*/
1186	int vusbDevUrbIoThreadDestroy(PVUSBDEV pDev)
1187	{
1188	int rc = VINF_SUCCESS;
1189	int rcThread = VINF_SUCCESS;
1190
1191	ASMAtomicXchgBool(&pDev->fTerminate, true);
1192	vusbDevUrbIoThreadWakeup(pDev);
1193
1194	rc = RTThreadWait(pDev->hUrbIoThread, RT_INDEFINITE_WAIT, &rcThread);
1195	if (RT_SUCCESS(rc))
1196	rc = rcThread;
1197
1198	pDev->hUrbIoThread = NIL_RTTHREAD;
1199
1200	return rc;
1201	}
1202
1203
1204	/**
1205	* Detaches a device from the hub it's attached to.
1206	*
1207	* @returns VBox status code.
1208	* @param pDev The device to detach.
1209	*
1210	* @remark This can be called in any state but reset.
1211	*/
1212	int vusbDevDetach(PVUSBDEV pDev)
1213	{
1214	LogFlow(("vusbDevDetach: pDev=%p[%s] enmState=%#x\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1215	VUSBDEV_ASSERT_VALID_STATE(pDev->enmState);
1216	Assert(pDev->enmState != VUSB_DEVICE_STATE_RESET);
1217
1218	vusbDevCancelAllUrbs(pDev, true);
1219	vusbDevAddressUnHash(pDev);
1220
1221	PVUSBROOTHUB pRh = vusbDevGetRh(pDev);
1222	if (!pRh)
1223	AssertMsgFailedReturn(("Not attached!\n"), VERR_VUSB_DEVICE_NOT_ATTACHED);
1224
1225	pDev->pHub->pOps->pfnDetach(pDev->pHub, pDev);
1226	pDev->i16Port = -1;
1227	vusbDevSetState(pDev, VUSB_DEVICE_STATE_DETACHED);
1228	pDev->pHub = NULL;
1229
1230	/* Remove the configuration */
1231	pDev->pCurCfgDesc = NULL;
1232	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1233	vusbDevResetPipeData(&pDev->aPipes[i]);
1234	return VINF_SUCCESS;
1235	}
1236
1237
1238	/**
1239	* Destroys a device, detaching it from the hub if necessary.
1240	*
1241	* @param pDev The device.
1242	* @thread EMT
1243	*/
1244	void vusbDevDestroy(PVUSBDEV pDev)
1245	{
1246	LogFlow(("vusbDevDestroy: pDev=%p[%s] enmState=%d\n", pDev, pDev->pUsbIns->pszName, pDev->enmState));
1247
1248	/*
1249	* Deal with pending async reset.
1250	* (anything but reset)
1251	*/
1252	vusbDevSetStateCmp(pDev, VUSB_DEVICE_STATE_DEFAULT, VUSB_DEVICE_STATE_RESET);
1253
1254	/*
1255	* Detach and free resources.
1256	*/
1257	if (pDev->pHub)
1258	vusbDevDetach(pDev);
1259	RTMemFree(pDev->paIfStates);
1260	TMR3TimerDestroy(pDev->pResetTimer);
1261	pDev->pResetTimer = NULL;
1262	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1263	{
1264	Assert(pDev->aPipes[i].pCtrl == NULL);
1265	RTCritSectDelete(&pDev->aPipes[i].CritSectCtrl);
1266	}
1267
1268	/*
1269	* Destroy I/O thread and request queue last because they might still be used
1270	* when cancelling URBs.
1271	*/
1272	vusbDevUrbIoThreadDestroy(pDev);
1273
1274	int rc = RTReqQueueDestroy(pDev->hReqQueueSync);
1275	AssertRC(rc);
1276
1277	if (pDev->hSniffer != VUSBSNIFFER_NIL)
1278	VUSBSnifferDestroy(pDev->hSniffer);
1279
1280	RTCritSectDelete(&pDev->CritSectAsyncUrbs);
1281	/* Not using vusbDevSetState() deliberately here because it would assert on the state. */
1282	pDev->enmState = VUSB_DEVICE_STATE_DESTROYED;
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	PVUSBDEV pDev = (PVUSBDEV)pvUser;
1341	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)pDev->pvArgs;
1342	Assert(pDev->pUsbIns == pUsbIns);
1343
1344	/*
1345	* Reset-done processing and cleanup.
1346	*/
1347	vusbDevResetDone(pDev, pArgs->rc, pArgs->pfnDone, pArgs->pvUser);
1348	pDev->pvArgs = NULL;
1349	RTMemFree(pArgs);
1350	}
1351
1352
1353	/**
1354	* Perform the actual reset.
1355	*
1356	* @thread EMT or a VUSB reset thread.
1357	*/
1358	static int vusbDevResetWorker(PVUSBDEV pDev, bool fResetOnLinux, bool fUseTimer, PVUSBRESETARGS pArgs)
1359	{
1360	int rc = VINF_SUCCESS;
1361	uint64_t u64EndTS = TMTimerGet(pDev->pResetTimer) + TMTimerFromMilli(pDev->pResetTimer, 10);
1362
1363	if (pDev->pUsbIns->pReg->pfnUsbReset)
1364	rc = pDev->pUsbIns->pReg->pfnUsbReset(pDev->pUsbIns, fResetOnLinux);
1365
1366	if (fUseTimer)
1367	{
1368	/*
1369	* We use a timer to communicate the result back to EMT.
1370	* This avoids suspend + poweroff issues, and it should give
1371	* us more accurate scheduling than making this thread sleep.
1372	*/
1373	int rc2 = TMTimerSet(pDev->pResetTimer, u64EndTS);
1374	AssertReleaseRC(rc2);
1375	}
1376
1377	if (pArgs)
1378	{
1379	pArgs->rc = rc;
1380	rc = VINF_SUCCESS;
1381	}
1382
1383	LogFlow(("vusbDevResetWorker: %s: returns %Rrc\n", pDev->pUsbIns->pszName, rc));
1384	return rc;
1385	}
1386
1387
1388	/**
1389	* Resets a device.
1390	*
1391	* Since a device reset shall take at least 10ms from the guest point of view,
1392	* it must be performed asynchronously. We create a thread which performs this
1393	* operation and ensures it will take at least 10ms.
1394	*
1395	* At times - like init - a synchronous reset is required, this can be done
1396	* by passing NULL for pfnDone.
1397	*
1398	* While the device is being reset it is in the VUSB_DEVICE_STATE_RESET state.
1399	* On completion it will be in the VUSB_DEVICE_STATE_DEFAULT state if successful,
1400	* or in the VUSB_DEVICE_STATE_DETACHED state if the rest failed.
1401	*
1402	* @returns VBox status code.
1403	*
1404	* @param pDev Pointer to the VUSB device interface.
1405	* @param fResetOnLinux Whether it's safe to reset the device(s) on a linux
1406	* host system. See discussion of logical reconnects elsewhere.
1407	* @param pfnDone Pointer to the completion routine. If NULL a synchronous
1408	* reset is preformed not respecting the 10ms.
1409	* @param pVM Pointer to the VM handle for performing the done function
1410	* on the EMT thread.
1411	* @thread EMT
1412	*/
1413	DECLCALLBACK(int) vusbIDeviceReset(PVUSBIDEVICE pDevice, bool fResetOnLinux, PFNVUSBRESETDONE pfnDone, void *pvUser, PVM pVM)
1414	{
1415	PVUSBDEV pDev = (PVUSBDEV)pDevice;
1416	Assert(!pfnDone \|\| pVM);
1417	LogFlow(("vusb: reset: [%s]/%i\n", pDev->pUsbIns->pszName, pDev->i16Port));
1418
1419	/*
1420	* Only one reset operation at a time.
1421	*/
1422	const VUSBDEVICESTATE enmStateOld = vusbDevSetState(pDev, VUSB_DEVICE_STATE_RESET);
1423	if (enmStateOld == VUSB_DEVICE_STATE_RESET)
1424	{
1425	LogRel(("VUSB: %s: reset request is ignored, the device is already resetting!\n", pDev->pUsbIns->pszName));
1426	return VERR_VUSB_DEVICE_IS_RESETTING;
1427	}
1428
1429	/*
1430	* First, cancel all async URBs.
1431	*/
1432	vusbDevCancelAllUrbs(pDev, false);
1433
1434	/* Async or sync? */
1435	if (pfnDone)
1436	{
1437	/*
1438	* Async fashion.
1439	*/
1440	PVUSBRESETARGS pArgs = (PVUSBRESETARGS)RTMemTmpAlloc(sizeof(*pArgs));
1441	if (pArgs)
1442	{
1443	pArgs->pDev = pDev;
1444	pArgs->pfnDone = pfnDone;
1445	pArgs->pvUser = pvUser;
1446	pArgs->rc = VINF_SUCCESS;
1447	pDev->pvArgs = pArgs;
1448	int rc = vusbDevIoThreadExec(pDev, 0 /* fFlags */, (PFNRT)vusbDevResetWorker, 4, pDev, fResetOnLinux, true, pArgs);
1449	if (RT_SUCCESS(rc))
1450	return rc;
1451
1452	RTMemTmpFree(pArgs);
1453	}
1454	/* fall back to sync on failure */
1455	}
1456
1457	/*
1458	* Sync fashion.
1459	*/
1460	int rc = vusbDevResetWorker(pDev, fResetOnLinux, false, NULL);
1461	vusbDevResetDone(pDev, rc, pfnDone, pvUser);
1462	return rc;
1463	}
1464
1465
1466	/**
1467	* Powers on the device.
1468	*
1469	* @returns VBox status code.
1470	* @param pInterface Pointer to the device interface structure.
1471	*/
1472	DECLCALLBACK(int) vusbIDevicePowerOn(PVUSBIDEVICE pInterface)
1473	{
1474	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1475	LogFlow(("vusbDevPowerOn: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1476
1477	/*
1478	* Check that the device is in a valid state.
1479	*/
1480	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1481	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1482	{
1483	Log(("vusb: warning: attempt to power on detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1484	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1485	}
1486	if (enmState == VUSB_DEVICE_STATE_RESET)
1487	{
1488	LogRel(("VUSB: %s: power on ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1489	return VERR_VUSB_DEVICE_IS_RESETTING;
1490	}
1491
1492	/*
1493	* Do the job.
1494	*/
1495	if (enmState == VUSB_DEVICE_STATE_ATTACHED)
1496	vusbDevSetState(pDev, VUSB_DEVICE_STATE_POWERED);
1497
1498	return VINF_SUCCESS;
1499	}
1500
1501
1502	/**
1503	* Powers off the device.
1504	*
1505	* @returns VBox status code.
1506	* @param pInterface Pointer to the device interface structure.
1507	*/
1508	DECLCALLBACK(int) vusbIDevicePowerOff(PVUSBIDEVICE pInterface)
1509	{
1510	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1511	LogFlow(("vusbDevPowerOff: pDev=%p[%s]\n", pDev, pDev->pUsbIns->pszName));
1512
1513	/*
1514	* Check that the device is in a valid state.
1515	*/
1516	const VUSBDEVICESTATE enmState = vusbDevGetState(pDev);
1517	if (enmState == VUSB_DEVICE_STATE_DETACHED)
1518	{
1519	Log(("vusb: warning: attempt to power off detached device %p[%s]\n", pDev, pDev->pUsbIns->pszName));
1520	return VERR_VUSB_DEVICE_NOT_ATTACHED;
1521	}
1522	if (enmState == VUSB_DEVICE_STATE_RESET)
1523	{
1524	LogRel(("VUSB: %s: power off ignored, the device is resetting!\n", pDev->pUsbIns->pszName));
1525	return VERR_VUSB_DEVICE_IS_RESETTING;
1526	}
1527
1528	/*
1529	* If it's a root hub, we will have to cancel all URBs and reap them.
1530	*/
1531	if (vusbDevIsRh(pDev))
1532	{
1533	PVUSBROOTHUB pRh = (PVUSBROOTHUB)pDev;
1534	VUSBIRhCancelAllUrbs(&pRh->IRhConnector);
1535	VUSBIRhReapAsyncUrbs(&pRh->IRhConnector, pInterface, 0);
1536	}
1537
1538	vusbDevSetState(pDev, VUSB_DEVICE_STATE_ATTACHED);
1539	return VINF_SUCCESS;
1540	}
1541
1542
1543	/**
1544	* Get the state of the device.
1545	*
1546	* @returns Device state.
1547	* @param pInterface Pointer to the device interface structure.
1548	*/
1549	DECLCALLBACK(VUSBDEVICESTATE) vusbIDeviceGetState(PVUSBIDEVICE pInterface)
1550	{
1551	return vusbDevGetState((PVUSBDEV)pInterface);
1552	}
1553
1554
1555	/**
1556	* @interface_method_impl{VUSBIDEVICE,pfnIsSavedStateSupported}
1557	*/
1558	DECLCALLBACK(bool) vusbIDeviceIsSavedStateSupported(PVUSBIDEVICE pInterface)
1559	{
1560	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1561	bool fSavedStateSupported = RT_BOOL(pDev->pUsbIns->pReg->fFlags & PDM_USBREG_SAVED_STATE_SUPPORTED);
1562
1563	LogFlowFunc(("pInterface=%p\n", pInterface));
1564
1565	LogFlowFunc(("returns %RTbool\n", fSavedStateSupported));
1566	return fSavedStateSupported;
1567	}
1568
1569
1570	/**
1571	* @interface_method_impl{VUSBIDEVICE,pfnGetState}
1572	*/
1573	DECLCALLBACK(VUSBSPEED) vusbIDeviceGetSpeed(PVUSBIDEVICE pInterface)
1574	{
1575	PVUSBDEV pDev = (PVUSBDEV)pInterface;
1576	VUSBSPEED enmSpeed = pDev->pUsbIns->enmSpeed;
1577
1578	LogFlowFunc(("pInterface=%p, returns %u\n", pInterface, enmSpeed));
1579	return enmSpeed;
1580	}
1581
1582
1583	/**
1584	* The maximum number of interfaces the device can have in all of it's configuration.
1585	*
1586	* @returns Number of interfaces.
1587	* @param pDev The device.
1588	*/
1589	size_t vusbDevMaxInterfaces(PVUSBDEV pDev)
1590	{
1591	uint8_t cMax = 0;
1592	unsigned i = pDev->pDescCache->pDevice->bNumConfigurations;
1593	while (i-- > 0)
1594	{
1595	if (pDev->pDescCache->paConfigs[i].Core.bNumInterfaces > cMax)
1596	cMax = pDev->pDescCache->paConfigs[i].Core.bNumInterfaces;
1597	}
1598
1599	return cMax;
1600	}
1601
1602
1603	/**
1604	* Executes a given function on the I/O thread.
1605	*
1606	* @returns IPRT status code.
1607	* @param pDev The USB device instance data.
1608	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1609	* @param pfnFunction The function to execute.
1610	* @param cArgs Number of arguments to the function.
1611	* @param Args The parameter list.
1612	*
1613	* @remarks See remarks on RTReqQueueCallV
1614	*/
1615	DECLHIDDEN(int) vusbDevIoThreadExecV(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, va_list Args)
1616	{
1617	int rc = VINF_SUCCESS;
1618	PRTREQ hReq = NULL;
1619
1620	Assert(pDev->hUrbIoThread != NIL_RTTHREAD);
1621	if (RT_LIKELY(pDev->hUrbIoThread != NIL_RTTHREAD))
1622	{
1623	uint32_t fReqFlags = RTREQFLAGS_IPRT_STATUS;
1624
1625	if (!(fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1626	fReqFlags \|= RTREQFLAGS_NO_WAIT;
1627
1628	rc = RTReqQueueCallV(pDev->hReqQueueSync, &hReq, 0 /* cMillies */, fReqFlags, pfnFunction, cArgs, Args);
1629	Assert(RT_SUCCESS(rc) \|\| rc == VERR_TIMEOUT);
1630
1631	vusbDevUrbIoThreadWakeup(pDev);
1632	if ( rc == VERR_TIMEOUT
1633	&& (fFlags & VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC))
1634	{
1635	rc = RTReqWait(hReq, RT_INDEFINITE_WAIT);
1636	AssertRC(rc);
1637	}
1638	RTReqRelease(hReq);
1639	}
1640	else
1641	rc = VERR_INVALID_STATE;
1642
1643	return rc;
1644	}
1645
1646
1647	/**
1648	* Executes a given function on the I/O thread.
1649	*
1650	* @returns IPRT status code.
1651	* @param pDev The USB device instance data.
1652	* @param fFlags Combination of VUSB_DEV_IO_THREAD_EXEC_FLAGS_*
1653	* @param pfnFunction The function to execute.
1654	* @param cArgs Number of arguments to the function.
1655	* @param ... The parameter list.
1656	*
1657	* @remarks See remarks on RTReqQueueCallV
1658	*/
1659	DECLHIDDEN(int) vusbDevIoThreadExec(PVUSBDEV pDev, uint32_t fFlags, PFNRT pfnFunction, unsigned cArgs, ...)
1660	{
1661	int rc = VINF_SUCCESS;
1662	va_list va;
1663
1664	va_start(va, cArgs);
1665	rc = vusbDevIoThreadExecV(pDev, fFlags, pfnFunction, cArgs, va);
1666	va_end(va);
1667	return rc;
1668	}
1669
1670
1671	/**
1672	* Executes a given function synchronously on the I/O thread waiting for it to complete.
1673	*
1674	* @returns IPRT status code.
1675	* @param pDev The USB device instance data
1676	* @param pfnFunction The function to execute.
1677	* @param cArgs Number of arguments to the function.
1678	* @param ... The parameter list.
1679	*
1680	* @remarks See remarks on RTReqQueueCallV
1681	*/
1682	DECLHIDDEN(int) vusbDevIoThreadExecSync(PVUSBDEV pDev, PFNRT pfnFunction, unsigned cArgs, ...)
1683	{
1684	int rc = VINF_SUCCESS;
1685	va_list va;
1686
1687	va_start(va, cArgs);
1688	rc = vusbDevIoThreadExecV(pDev, VUSB_DEV_IO_THREAD_EXEC_FLAGS_SYNC, pfnFunction, cArgs, va);
1689	va_end(va);
1690	return rc;
1691	}
1692
1693
1694	static DECLCALLBACK(int) vusbDevGetDescriptorCacheWorker(PPDMUSBINS pUsbIns, PCPDMUSBDESCCACHE *ppDescCache)
1695	{
1696	*ppDescCache = pUsbIns->pReg->pfnUsbGetDescriptorCache(pUsbIns);
1697	return VINF_SUCCESS;
1698	}
1699
1700	/**
1701	* Initialize a new VUSB device.
1702	*
1703	* @returns VBox status code.
1704	* @param pDev The VUSB device to initialize.
1705	* @param pUsbIns Pointer to the PDM USB Device instance.
1706	*/
1707	int vusbDevInit(PVUSBDEV pDev, PPDMUSBINS pUsbIns, const char *pszCaptureFilename)
1708	{
1709	/*
1710	* Initialize the device data members.
1711	* (All that are Non-Zero at least.)
1712	*/
1713	Assert(!pDev->IDevice.pfnReset);
1714	Assert(!pDev->IDevice.pfnPowerOn);
1715	Assert(!pDev->IDevice.pfnPowerOff);
1716	Assert(!pDev->IDevice.pfnGetState);
1717	Assert(!pDev->IDevice.pfnIsSavedStateSupported);
1718
1719	pDev->IDevice.pfnReset = vusbIDeviceReset;
1720	pDev->IDevice.pfnPowerOn = vusbIDevicePowerOn;
1721	pDev->IDevice.pfnPowerOff = vusbIDevicePowerOff;
1722	pDev->IDevice.pfnGetState = vusbIDeviceGetState;
1723	pDev->IDevice.pfnIsSavedStateSupported = vusbIDeviceIsSavedStateSupported;
1724	pDev->IDevice.pfnGetSpeed = vusbIDeviceGetSpeed;
1725	pDev->pUsbIns = pUsbIns;
1726	pDev->pNext = NULL;
1727	pDev->pNextHash = NULL;
1728	pDev->pHub = NULL;
1729	pDev->enmState = VUSB_DEVICE_STATE_DETACHED;
1730	pDev->u8Address = VUSB_INVALID_ADDRESS;
1731	pDev->u8NewAddress = VUSB_INVALID_ADDRESS;
1732	pDev->i16Port = -1;
1733	pDev->u16Status = 0;
1734	pDev->pDescCache = NULL;
1735	pDev->pCurCfgDesc = NULL;
1736	pDev->paIfStates = NULL;
1737	memset(&pDev->aPipes[0], 0, sizeof(pDev->aPipes));
1738	for (unsigned i = 0; i < RT_ELEMENTS(pDev->aPipes); i++)
1739	{
1740	int rc = RTCritSectInit(&pDev->aPipes[i].CritSectCtrl);
1741	AssertRCReturn(rc, rc);
1742	}
1743	pDev->pResetTimer = NULL;
1744	pDev->hSniffer = VUSBSNIFFER_NIL;
1745
1746	int rc = RTCritSectInit(&pDev->CritSectAsyncUrbs);
1747	AssertRCReturn(rc, rc);
1748
1749	/* Setup request queue executing synchronous tasks on the I/O thread. */
1750	rc = RTReqQueueCreate(&pDev->hReqQueueSync);
1751	AssertRCReturn(rc, rc);
1752
1753	/* Create I/O thread. */
1754	rc = vusbDevUrbIoThreadCreate(pDev);
1755	AssertRCReturn(rc, rc);
1756
1757	/*
1758	* Create the reset timer.
1759	*/
1760	rc = PDMUsbHlpTMTimerCreate(pDev->pUsbIns, TMCLOCK_VIRTUAL, vusbDevResetDoneTimer, pDev, 0 /fFlags/,
1761	"USB Device Reset Timer", &pDev->pResetTimer);
1762	AssertRCReturn(rc, rc);
1763
1764	if (pszCaptureFilename)
1765	{
1766	rc = VUSBSnifferCreate(&pDev->hSniffer, 0, pszCaptureFilename, NULL);
1767	AssertRCReturn(rc, rc);
1768	}
1769
1770	/*
1771	* Get the descriptor cache from the device. (shall cannot fail)
1772	*/
1773	rc = vusbDevIoThreadExecSync(pDev, (PFNRT)vusbDevGetDescriptorCacheWorker, 2, pUsbIns, &pDev->pDescCache);
1774	AssertRC(rc);
1775	AssertPtr(pDev->pDescCache);
1776	#ifdef VBOX_STRICT
1777	if (pDev->pDescCache->fUseCachedStringsDescriptors)
1778	{
1779	int32_t iPrevId = -1;
1780	for (unsigned iLang = 0; iLang < pDev->pDescCache->cLanguages; iLang++)
1781	{
1782	Assert((int32_t)pDev->pDescCache->paLanguages[iLang].idLang > iPrevId);
1783	iPrevId = pDev->pDescCache->paLanguages[iLang].idLang;
1784
1785	int32_t idxPrevStr = -1;
1786	PCPDMUSBDESCCACHESTRING paStrings = pDev->pDescCache->paLanguages[iLang].paStrings;
1787	unsigned cStrings = pDev->pDescCache->paLanguages[iLang].cStrings;
1788	for (unsigned iStr = 0; iStr < cStrings; iStr++)
1789	{
1790	Assert((int32_t)paStrings[iStr].idx > idxPrevStr);
1791	idxPrevStr = paStrings[iStr].idx;
1792	size_t cch = strlen(paStrings[iStr].psz);
1793	Assert(cch <= 127);
1794	}
1795	}
1796	}
1797	#endif
1798
1799	/*
1800	* Allocate memory for the interface states.
1801	*/
1802	size_t cbIface = vusbDevMaxInterfaces(pDev) * sizeof(*pDev->paIfStates);
1803	pDev->paIfStates = (PVUSBINTERFACESTATE)RTMemAllocZ(cbIface);
1804	AssertMsgReturn(pDev->paIfStates, ("RTMemAllocZ(%d) failed\n", cbIface), VERR_NO_MEMORY);
1805
1806	return VINF_SUCCESS;
1807	}
1808
1809	/*
1810	* Local Variables:
1811	* mode: c
1812	* c-file-style: "bsd"
1813	* c-basic-offset: 4
1814	* tab-width: 4
1815	* indent-tabs-mode: s
1816	* End:
1817	*/
1818

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source: vbox/trunk/src/VBox/Devices/USB/VUSBDevice.cpp@ 56292

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