UsbMsd.cpp@ 43788

Last change on this file since 43788 was 43788, checked in by vboxsync, 12 years ago
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1	/* $Id: UsbMsd.cpp 43788 2012-10-31 18:30:35Z vboxsync $ */
2	/** @file
3	* UsbMSD - USB Mass Storage Device Emulation.
4	*/
5
6	/*
7	* Copyright (C) 2007-2010 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	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_USB_MSD
22	#include <VBox/vmm/pdmusb.h>
23	#include <VBox/log.h>
24	#include <VBox/err.h>
25	#include <VBox/scsi.h>
26	#include <iprt/assert.h>
27	#include <iprt/critsect.h>
28	#include <iprt/mem.h>
29	#include <iprt/semaphore.h>
30	#include <iprt/string.h>
31	#include <iprt/uuid.h>
32	#include "VBoxDD.h"
33
34
35	/*******************************************************************************
36	* Defined Constants And Macros *
37	*******************************************************************************/
38	/** @name USB MSD string IDs
39	* @{ */
40	#define USBMSD_STR_ID_MANUFACTURER 1
41	#define USBMSD_STR_ID_PRODUCT_HD 2
42	/** @} */
43
44	/** @name USB MSD vendor and product IDs
45	* @{ */
46	#define VBOX_USB_VENDOR 0x80EE
47	#define USBMSD_PID_HD 0x0030
48	#define USBMSD_PID_CD 0x0031
49	/** @} */
50
51	/*******************************************************************************
52	* Structures and Typedefs *
53	*******************************************************************************/
54
55	/**
56	* USB MSD Command Block Wrapper or CBW. The command block
57	* itself (CBWCB) contains protocol-specific data (here SCSI).
58	*/
59	#pragma pack(1)
60	typedef struct USBCBW
61	{
62	uint32_t dCBWSignature;
63	#define USBCBW_SIGNATURE UINT32_C(0x43425355)
64	uint32_t dCBWTag;
65	uint32_t dCBWDataTransferLength;
66	uint8_t bmCBWFlags;
67	#define USBCBW_DIR_MASK RT_BIT(7)
68	#define USBCBW_DIR_OUT 0
69	#define USBCBW_DIR_IN RT_BIT(7)
70	uint8_t bCBWLun;
71	uint8_t bCBWCBLength;
72	uint8_t CBWCB[16];
73	} USBCBW;
74	#pragma pack()
75	AssertCompileSize(USBCBW, 31);
76	/** Pointer to a Command Block Wrapper. */
77	typedef USBCBW *PUSBCBW;
78	/** Pointer to a const Command Block Wrapper. */
79	typedef const USBCBW *PCUSBCBW;
80
81	/**
82	* USB MSD Command Status Wrapper or CSW.
83	*/
84	#pragma pack(1)
85	typedef struct USBCSW
86	{
87	uint32_t dCSWSignature;
88	#define USBCSW_SIGNATURE UINT32_C(0x53425355)
89	uint32_t dCSWTag;
90	uint32_t dCSWDataResidue;
91	#define USBCSW_STATUS_OK UINT8_C(0)
92	#define USBCSW_STATUS_FAILED UINT8_C(1)
93	#define USBCSW_STATUS_PHASE_ERROR UINT8_C(2)
94	uint8_t bCSWStatus;
95	} USBCSW;
96	#pragma pack()
97	AssertCompileSize(USBCSW, 13);
98	/** Pointer to a Command Status Wrapper. */
99	typedef USBCSW *PUSBCSW;
100	/** Pointer to a const Command Status Wrapper. */
101	typedef const USBCSW *PCUSBCSW;
102
103
104	/**
105	* The USB MSD request state.
106	*/
107	typedef enum USBMSDREQSTATE
108	{
109	/** Invalid status. */
110	USBMSDREQSTATE_INVALID = 0,
111	/** Ready to receive a new SCSI command. */
112	USBMSDREQSTATE_READY,
113	/** Waiting for the host to supply data. */
114	USBMSDREQSTATE_DATA_FROM_HOST,
115	/** The SCSI request is being executed by the driver. */
116	USBMSDREQSTATE_EXECUTING,
117	/** Have (more) data for the host. */
118	USBMSDREQSTATE_DATA_TO_HOST,
119	/** Waiting to supply status information to the host. */
120	USBMSDREQSTATE_STATUS,
121	/** Destroy the request upon completion.
122	* This is set when the SCSI request doesn't complete before for the device or
123	* mass storage reset operation times out. USBMSD::pReq will be set to NULL
124	* and the only reference to this request will be with DrvSCSI. */
125	USBMSDREQSTATE_DESTROY_ON_COMPLETION,
126	/** The end of the valid states. */
127	USBMSDREQSTATE_END
128	} USBMSDREQSTATE;
129
130
131	/**
132	* A pending USB MSD request.
133	*/
134	typedef struct USBMSDREQ
135	{
136	/** The state of the request. */
137	USBMSDREQSTATE enmState;
138	/** The size of the data buffer. */
139	size_t cbBuf;
140	/** Pointer to the data buffer. */
141	uint8_t *pbBuf;
142	/** Current buffer offset. */
143	uint32_t offBuf;
144	/** The current Cbw when we're in the pending state. */
145	USBCBW Cbw;
146	/** The current SCSI request. */
147	PDMSCSIREQUEST ScsiReq;
148	/** The scatter-gather segment used by ScsiReq for describing pbBuf. */
149	RTSGSEG ScsiReqSeg;
150	/** The sense buffer for the current SCSI request. */
151	uint8_t ScsiReqSense[64];
152	/** The status of a completed SCSI request. */
153	int iScsiReqStatus;
154	/** Set if the request structure must be destroyed when the SCSI driver
155	* completes it. This is used to deal with requests that runs while the
156	* device is being reset. */
157	bool fDestoryOnCompletion;
158	/** Pointer to the USB device instance owning it. */
159	PPDMUSBINS pUsbIns;
160	} USBMSDREQ;
161	/** Pointer to a USB MSD request. */
162	typedef USBMSDREQ *PUSBMSDREQ;
163
164
165	/**
166	* Endpoint status data.
167	*/
168	typedef struct USBMSDEP
169	{
170	bool fHalted;
171	} USBMSDEP;
172	/** Pointer to the endpoint status. */
173	typedef USBMSDEP *PUSBMSDEP;
174
175
176	/**
177	* A URB queue.
178	*/
179	typedef struct USBMSDURBQUEUE
180	{
181	/** The head pointer. */
182	PVUSBURB pHead;
183	/** Where to insert the next entry. */
184	PVUSBURB *ppTail;
185	} USBMSDURBQUEUE;
186	/** Pointer to a URB queue. */
187	typedef USBMSDURBQUEUE *PUSBMSDURBQUEUE;
188	/** Pointer to a const URB queue. */
189	typedef USBMSDURBQUEUE const *PCUSBMSDURBQUEUE;
190
191
192	/**
193	* The USB MSD instance data.
194	*/
195	typedef struct USBMSD
196	{
197	/** Pointer back to the PDM USB Device instance structure. */
198	PPDMUSBINS pUsbIns;
199	/** Critical section protecting the device state. */
200	RTCRITSECT CritSect;
201
202	/** The current configuration.
203	* (0 - default, 1 - the only, i.e configured.) */
204	uint8_t bConfigurationValue;
205	#if 0
206	/** The state of the MSD (state machine).*/
207	USBMSDSTATE enmState;
208	#endif
209	/** Endpoint 0 is the default control pipe, 1 is the host->dev bulk pipe and 2
210	* is the dev->host one. */
211	USBMSDEP aEps[3];
212	/** The current request. */
213	PUSBMSDREQ pReq;
214
215	/** Pending to-host queue.
216	* The URBs waiting here are pending the completion of the current request and
217	* data or status to become available.
218	*/
219	USBMSDURBQUEUE ToHostQueue;
220
221	/** Done queue
222	* The URBs stashed here are waiting to be reaped. */
223	USBMSDURBQUEUE DoneQueue;
224	/** Signalled when adding an URB to the done queue and fHaveDoneQueueWaiter
225	* is set. */
226	RTSEMEVENT hEvtDoneQueue;
227	/** Someone is waiting on the done queue. */
228	bool fHaveDoneQueueWaiter;
229
230	/** Whether to signal the reset semaphore when the current request completes. */
231	bool fSignalResetSem;
232	/** Semaphore usbMsdUsbReset waits on when a request is executing at reset
233	* time. Only signalled when fSignalResetSem is set. */
234	RTSEMEVENTMULTI hEvtReset;
235	/** The reset URB.
236	* This is waiting for SCSI request completion before finishing the reset. */
237	PVUSBURB pResetUrb;
238
239	/**
240	* LUN\#0 data.
241	*/
242	struct
243	{
244	/** The base interface for LUN\#0. */
245	PDMIBASE IBase;
246	/** The SCSI port interface for LUN\#0 */
247	PDMISCSIPORT IScsiPort;
248
249	/** The base interface for the SCSI driver connected to LUN\#0. */
250	PPDMIBASE pIBase;
251	/** The SCSI connector interface for the SCSI driver connected to LUN\#0. */
252	PPDMISCSICONNECTOR pIScsiConnector;
253	} Lun0;
254
255	} USBMSD;
256	/** Pointer to the USB MSD instance data. */
257	typedef USBMSD *PUSBMSD;
258
259
260	/*******************************************************************************
261	* Global Variables *
262	*******************************************************************************/
263	static const PDMUSBDESCCACHESTRING g_aUsbMsdStrings_en_US[] =
264	{
265	{ USBMSD_STR_ID_MANUFACTURER, "VirtualBox" },
266	{ USBMSD_STR_ID_PRODUCT_HD, "USB Harddisk" },
267	};
268
269	static const PDMUSBDESCCACHELANG g_aUsbMsdLanguages[] =
270	{
271	{ 0x0409, RT_ELEMENTS(g_aUsbMsdStrings_en_US), g_aUsbMsdStrings_en_US }
272	};
273
274	static const VUSBDESCENDPOINTEX g_aUsbMsdEndpointDescs[2] =
275	{
276	{
277	{
278	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
279	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
280	/* .bEndpointAddress = / 0x81 / ep=1, in */,
281	/* .bmAttributes = / 2 / bulk */,
282	/* .wMaxPacketSize = / 64,//512 / or 64? */, <-- depends on device speed!
283	/* .bInterval = */ 0,
284	},
285	/* .pvMore = */ NULL,
286	/* .pvClass = */ NULL,
287	/* .cbClass = */ 0
288	},
289	{
290	{
291	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
292	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
293	/* .bEndpointAddress = / 0x02 / ep=2, out */,
294	/* .bmAttributes = / 2 / bulk */,
295	/* .wMaxPacketSize = / 64,//512 / or 64? */, <-- depends on device speed!
296	/* .bInterval = */ 0,
297	},
298	/* .pvMore = */ NULL,
299	/* .pvClass = */ NULL,
300	/* .cbClass = */ 0
301	}
302	};
303
304	static const VUSBDESCINTERFACEEX g_UsbMsdInterfaceDesc =
305	{
306	{
307	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
308	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
309	/* .bInterfaceNumber = */ 0,
310	/* .bAlternateSetting = */ 0,
311	/* .bNumEndpoints = */ 2,
312	/* .bInterfaceClass = / 8 / Mass Storage */,
313	/* .bInterfaceSubClass = / 6 / SCSI transparent command set */,
314	/* .bInterfaceProtocol = / 0x50 / Bulk-Only Transport */,
315	/* .iInterface = */ 0
316	},
317	/* .pvMore = */ NULL,
318	/* .pvClass = */ NULL,
319	/* .cbClass = */ 0,
320	&g_aUsbMsdEndpointDescs[0]
321	};
322
323	static const VUSBINTERFACE g_aUsbMsdInterfaces[] =
324	{
325	{ &g_UsbMsdInterfaceDesc, /* .cSettings = */ 1 },
326	};
327
328	static const VUSBDESCCONFIGEX g_UsbMsdConfigDesc =
329	{
330	{
331	/* .bLength = */ sizeof(VUSBDESCCONFIG),
332	/* .bDescriptorType = */ VUSB_DT_CONFIG,
333	/* .wTotalLength = / 0 / recalculated on read */,
334	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbMsdInterfaces),
335	/* .bConfigurationValue =*/ 1,
336	/* .iConfiguration = */ 0,
337	/* .bmAttributes = */ RT_BIT(7),
338	/* .MaxPower = / 50 / 100mA */
339	},
340	NULL, /* pvMore */
341	&g_aUsbMsdInterfaces[0],
342	NULL /* pvOriginal */
343	};
344
345	static const VUSBDESCDEVICE g_UsbMsdDeviceDesc =
346	{
347	/* .bLength = */ sizeof(g_UsbMsdDeviceDesc),
348	/* .bDescriptorType = */ VUSB_DT_DEVICE,
349	/* .bcdUsb = / 0x200, / USB 2.0 */
350	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
351	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
352	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
353	/* .bMaxPacketSize0 = */ 64,
354	/* .idVendor = */ VBOX_USB_VENDOR,
355	/* .idProduct = */ USBMSD_PID_HD,
356	/* .bcdDevice = / 0x0100, / 1.0 */
357	/* .iManufacturer = */ USBMSD_STR_ID_MANUFACTURER,
358	/* .iProduct = */ USBMSD_STR_ID_PRODUCT_HD,
359	/* .iSerialNumber = */ 0,
360	/* .bNumConfigurations = */ 1
361	};
362
363	static const VUSBDEVICEQUALIFIER g_UsbMsdDeviceQualifier =
364	{
365	/* .bLength = */ sizeof(g_UsbMsdDeviceQualifier),
366	/* .bDescriptorType = */ VUSB_DT_DEVICE_QUALIFIER,
367	/* .bcdUsb = / 0x200, / USB 2.0 */
368	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
369	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
370	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
371	/* .bMaxPacketSize0 = */ 64,
372	/* .bNumConfigurations = */ 1,
373	/* .bReserved = */ 0
374	};
375
376	static const PDMUSBDESCCACHE g_UsbMsdDescCache =
377	{
378	/* .pDevice = */ &g_UsbMsdDeviceDesc,
379	/* .paConfigs = */ &g_UsbMsdConfigDesc,
380	/* .paLanguages = */ g_aUsbMsdLanguages,
381	/* .cLanguages = */ RT_ELEMENTS(g_aUsbMsdLanguages),
382	/* .fUseCachedDescriptors = */ true,
383	/* .fUseCachedStringsDescriptors = */ true
384	};
385
386
387	/*******************************************************************************
388	* Internal Functions *
389	*******************************************************************************/
390	static int usbMsdHandleBulkDevToHost(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb);
391
392
393	/**
394	* Initializes an URB queue.
395	*
396	* @param pQueue The URB queue.
397	*/
398	static void usbMsdQueueInit(PUSBMSDURBQUEUE pQueue)
399	{
400	pQueue->pHead = NULL;
401	pQueue->ppTail = &pQueue->pHead;
402	}
403
404
405
406	/**
407	* Inserts an URB at the end of the queue.
408	*
409	* @param pQueue The URB queue.
410	* @param pUrb The URB to insert.
411	*/
412	DECLINLINE(void) usbMsdQueueAddTail(PUSBMSDURBQUEUE pQueue, PVUSBURB pUrb)
413	{
414	pUrb->Dev.pNext = NULL;
415	*pQueue->ppTail = pUrb;
416	pQueue->ppTail = &pUrb->Dev.pNext;
417	}
418
419
420	/**
421	* Unlinks the head of the queue and returns it.
422	*
423	* @returns The head entry.
424	* @param pQueue The URB queue.
425	*/
426	DECLINLINE(PVUSBURB) usbMsdQueueRemoveHead(PUSBMSDURBQUEUE pQueue)
427	{
428	PVUSBURB pUrb = pQueue->pHead;
429	if (pUrb)
430	{
431	PVUSBURB pNext = pUrb->Dev.pNext;
432	pQueue->pHead = pNext;
433	if (!pNext)
434	pQueue->ppTail = &pQueue->pHead;
435	else
436	pUrb->Dev.pNext = NULL;
437	}
438	return pUrb;
439	}
440
441
442	/**
443	* Removes an URB from anywhere in the queue.
444	*
445	* @returns true if found, false if not.
446	* @param pQueue The URB queue.
447	* @param pUrb The URB to remove.
448	*/
449	DECLINLINE(bool) usbMsdQueueRemove(PUSBMSDURBQUEUE pQueue, PVUSBURB pUrb)
450	{
451	PVUSBURB pCur = pQueue->pHead;
452	if (pCur == pUrb)
453	pQueue->pHead = pUrb->Dev.pNext;
454	else
455	{
456	while (pCur)
457	{
458	if (pCur->Dev.pNext == pUrb)
459	{
460	pCur->Dev.pNext = pUrb->Dev.pNext;
461	break;
462	}
463	pCur = pCur->Dev.pNext;
464	}
465	if (!pCur)
466	return false;
467	}
468	if (!pUrb->Dev.pNext)
469	pQueue->ppTail = &pQueue->pHead;
470	return true;
471	}
472
473
474	/**
475	* Checks if the queue is empty or not.
476	*
477	* @returns true if it is, false if it isn't.
478	* @param pQueue The URB queue.
479	*/
480	DECLINLINE(bool) usbMsdQueueIsEmpty(PCUSBMSDURBQUEUE pQueue)
481	{
482	return pQueue->pHead == NULL;
483	}
484
485
486	/**
487	* Links an URB into the done queue.
488	*
489	* @param pThis The MSD instance.
490	* @param pUrb The URB.
491	*/
492	static void usbMsdLinkDone(PUSBMSD pThis, PVUSBURB pUrb)
493	{
494	usbMsdQueueAddTail(&pThis->DoneQueue, pUrb);
495
496	if (pThis->fHaveDoneQueueWaiter)
497	{
498	int rc = RTSemEventSignal(pThis->hEvtDoneQueue);
499	AssertRC(rc);
500	}
501	}
502
503
504
505
506	/**
507	* Allocates a new request and does basic init.
508	*
509	* @returns Pointer to the new request. NULL if we're out of memory.
510	* @param pUsbIns The instance allocating it.
511	*/
512	static PUSBMSDREQ usbMsdReqAlloc(PPDMUSBINS pUsbIns)
513	{
514	PUSBMSDREQ pReq = (PUSBMSDREQ)PDMUsbHlpMMHeapAllocZ(pUsbIns, sizeof(*pReq));
515	if (pReq)
516	{
517	pReq->enmState = USBMSDREQSTATE_READY;
518	pReq->iScsiReqStatus = -1;
519	pReq->pUsbIns = pUsbIns;
520	}
521	else
522	LogRel(("usbMsdReqAlloc: Out of memory\n"));
523	return pReq;
524	}
525
526
527	/**
528	* Frees a request.
529	*
530	* @param pReq The request.
531	*/
532	static void usbMsdReqFree(PUSBMSDREQ pReq)
533	{
534	/*
535	* Check the input.
536	*/
537	AssertReturnVoid( pReq->enmState > USBMSDREQSTATE_INVALID
538	&& pReq->enmState != USBMSDREQSTATE_EXECUTING
539	&& pReq->enmState < USBMSDREQSTATE_END);
540	PPDMUSBINS pUsbIns = pReq->pUsbIns;
541	AssertPtrReturnVoid(pUsbIns);
542	AssertReturnVoid(PDM_VERSION_ARE_COMPATIBLE(pUsbIns->u32Version, PDM_USBINS_VERSION));
543
544	/*
545	* Invalidate it and free the associated resources.
546	*/
547	pReq->enmState = USBMSDREQSTATE_INVALID;
548	pReq->cbBuf = 0;
549	pReq->offBuf = 0;
550	pReq->ScsiReq.pbCDB = NULL;
551	pReq->ScsiReq.paScatterGatherHead = NULL;
552	pReq->ScsiReq.pbSenseBuffer = NULL;
553	pReq->ScsiReq.pvUser = NULL;
554	pReq->ScsiReqSeg.cbSeg = 0;
555	pReq->ScsiReqSeg.pvSeg = NULL;
556
557	if (pReq->pbBuf)
558	{
559	PDMUsbHlpMMHeapFree(pUsbIns, pReq->pbBuf);
560	pReq->pbBuf = NULL;
561	}
562
563	PDMUsbHlpMMHeapFree(pUsbIns, pReq);
564	}
565
566
567	/**
568	* Prepares a request for execution or data buffering.
569	*
570	* @param pReq The request.
571	* @param pCbw The SCSI command block wrapper.
572	*/
573	static void usbMsdReqPrepare(PUSBMSDREQ pReq, PCUSBCBW pCbw)
574	{
575	/* Copy the CBW */
576	size_t cbCopy = RT_OFFSETOF(USBCBW, CBWCB[pCbw->bCBWCBLength]);
577	memcpy(&pReq->Cbw, pCbw, cbCopy);
578	memset((uint8_t *)&pReq->Cbw + cbCopy, 0, sizeof(pReq->Cbw) - cbCopy);
579
580	/* Setup the SCSI request. */
581	pReq->ScsiReq.uLogicalUnit = pReq->Cbw.bCBWLun;
582	pReq->ScsiReq.uDataDirection = (pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_OUT
583	? PDMSCSIREQUESTTXDIR_TO_DEVICE
584	: PDMSCSIREQUESTTXDIR_FROM_DEVICE;
585	pReq->ScsiReq.cbCDB = pReq->Cbw.bCBWCBLength;
586
587	pReq->ScsiReq.pbCDB = &pReq->Cbw.CBWCB[0];
588	pReq->offBuf = 0;
589	pReq->ScsiReqSeg.pvSeg = pReq->pbBuf;
590	pReq->ScsiReqSeg.cbSeg = pReq->Cbw.dCBWDataTransferLength;
591	pReq->ScsiReq.cbScatterGather = pReq->Cbw.dCBWDataTransferLength;
592	pReq->ScsiReq.cScatterGatherEntries = 1;
593	pReq->ScsiReq.paScatterGatherHead = &pReq->ScsiReqSeg;
594	pReq->ScsiReq.cbSenseBuffer = sizeof(pReq->ScsiReqSense);
595	pReq->ScsiReq.pbSenseBuffer = &pReq->ScsiReqSense[0];
596	pReq->ScsiReq.pvUser = NULL;
597	RT_ZERO(pReq->ScsiReqSense);
598	pReq->iScsiReqStatus = -1;
599	}
600
601
602	/**
603	* Makes sure that there is sufficient buffer space available.
604	*
605	* @returns Success indicator (true/false)
606	* @param pReq
607	* @param cbBuf The required buffer space.
608	*/
609	static int usbMsdReqEnsureBuffer(PUSBMSDREQ pReq, size_t cbBuf)
610	{
611	if (RT_LIKELY(pReq->cbBuf >= cbBuf))
612	RT_BZERO(pReq->pbBuf, cbBuf);
613	else
614	{
615	PDMUsbHlpMMHeapFree(pReq->pUsbIns, pReq->pbBuf);
616	pReq->cbBuf = 0;
617
618	cbBuf = RT_ALIGN_Z(cbBuf, 0x1000);
619	pReq->pbBuf = (uint8_t *)PDMUsbHlpMMHeapAllocZ(pReq->pUsbIns, cbBuf);
620	if (!pReq->pbBuf)
621	return false;
622
623	pReq->cbBuf = cbBuf;
624	}
625	return true;
626	}
627
628
629	/**
630	* Completes the URB with a stalled state, halting the pipe.
631	*/
632	static int usbMsdCompleteStall(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb, const char *pszWhy)
633	{
634	Log(("usbMsdCompleteStall/#%u: pUrb=%p:%s: %s\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, pszWhy));
635
636	pUrb->enmStatus = VUSBSTATUS_STALL;
637
638	/** @todo figure out if the stall is global or pipe-specific or both. */
639	if (pEp)
640	pEp->fHalted = true;
641	else
642	{
643	pThis->aEps[1].fHalted = true;
644	pThis->aEps[2].fHalted = true;
645	}
646
647	usbMsdLinkDone(pThis, pUrb);
648	return VINF_SUCCESS;
649	}
650
651
652	/**
653	* Completes the URB with a OK state.
654	*/
655	static int usbMsdCompleteOk(PUSBMSD pThis, PVUSBURB pUrb, size_t cbData)
656	{
657	Log(("usbMsdCompleteOk/#%u: pUrb=%p:%s cbData=%#zx\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, cbData));
658
659	pUrb->enmStatus = VUSBSTATUS_OK;
660	pUrb->cbData = (uint32_t)cbData;
661
662	usbMsdLinkDone(pThis, pUrb);
663	return VINF_SUCCESS;
664	}
665
666
667	/**
668	* Reset worker for usbMsdUsbReset, usbMsdUsbSetConfiguration and
669	* usbMsdUrbHandleDefaultPipe.
670	*
671	* @returns VBox status code.
672	* @param pThis The MSD instance.
673	* @param pUrb Set when usbMsdUrbHandleDefaultPipe is the
674	* caller.
675	* @param fSetConfig Set when usbMsdUsbSetConfiguration is the
676	* caller.
677	*/
678	static int usbMsdResetWorker(PUSBMSD pThis, PVUSBURB pUrb, bool fSetConfig)
679	{
680	/*
681	* Wait for the any command currently executing to complete before
682	* resetting. (We cannot cancel its execution.) How we do this depends
683	* on the reset method.
684	*/
685	PUSBMSDREQ pReq = pThis->pReq;
686	if ( pReq
687	&& pReq->enmState == USBMSDREQSTATE_EXECUTING)
688	{
689	/* Don't try to deal with the set config variant nor multiple build-only
690	mass storage resets. */
691	if (pThis->pResetUrb && (pUrb \|\| fSetConfig))
692	{
693	Log(("usbMsdResetWorker: pResetUrb is already %p:%s - stalling\n", pThis->pResetUrb, pThis->pResetUrb->pszDesc));
694	return usbMsdCompleteStall(pThis, NULL, pUrb, "pResetUrb");
695	}
696
697	/* Bulk-Only Mass Storage Reset: Complete the reset on request completion. */
698	if (pUrb)
699	{
700	pThis->pResetUrb = pUrb;
701	Log(("usbMsdResetWorker: Setting pResetUrb to %p:%s\n", pThis->pResetUrb, pThis->pResetUrb->pszDesc));
702	return VINF_SUCCESS;
703	}
704
705	/* Device reset: Wait for up to 10 ms. If it doesn't work, ditch
706	whoe the request structure. We'll allocate a new one when needed. */
707	Log(("usbMsdResetWorker: Waiting for completion...\n"));
708	Assert(!pThis->fSignalResetSem);
709	pThis->fSignalResetSem = true;
710	RTSemEventMultiReset(pThis->hEvtReset);
711	RTCritSectLeave(&pThis->CritSect);
712
713	int rc = RTSemEventMultiWait(pThis->hEvtReset, 10 /ms/);
714
715	RTCritSectEnter(&pThis->CritSect);
716	pThis->fSignalResetSem = false;
717	if ( RT_FAILURE(rc)
718	\|\| pReq->enmState == USBMSDREQSTATE_EXECUTING)
719	{
720	Log(("usbMsdResetWorker: Didn't complete, ditching the current request (%p)!\n", pReq));
721	Assert(pReq == pThis->pReq);
722	pReq->enmState = USBMSDREQSTATE_DESTROY_ON_COMPLETION;
723	pThis->pReq = NULL;
724	pReq = NULL;
725	}
726	}
727
728	/*
729	* Reset the request and device state.
730	*/
731	if (pReq)
732	{
733	pReq->enmState = USBMSDREQSTATE_READY;
734	pReq->iScsiReqStatus = -1;
735	}
736
737	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aEps); i++)
738	pThis->aEps[i].fHalted = false;
739
740	if (!pUrb && !fSetConfig) /* (only device reset) */
741	pThis->bConfigurationValue = 0; /* default */
742
743	/*
744	* Ditch all pending URBs.
745	*/
746	PVUSBURB pCurUrb;
747	while ((pCurUrb = usbMsdQueueRemoveHead(&pThis->ToHostQueue)) != NULL)
748	{
749	pCurUrb->enmStatus = VUSBSTATUS_CRC;
750	usbMsdLinkDone(pThis, pCurUrb);
751	}
752
753	pCurUrb = pThis->pResetUrb;
754	if (pCurUrb)
755	{
756	pThis->pResetUrb = NULL;
757	pCurUrb->enmStatus = VUSBSTATUS_CRC;
758	usbMsdLinkDone(pThis, pCurUrb);
759	}
760
761	if (pUrb)
762	return usbMsdCompleteOk(pThis, pUrb, 0);
763	return VINF_SUCCESS;
764	}
765
766
767	/**
768	* @interface_method_impl{PDMISCSIPORT,pfnSCSIRequestCompleted}
769	*/
770	static DECLCALLBACK(int) usbMsdLun0ScsiRequestCompleted(PPDMISCSIPORT pInterface, PPDMSCSIREQUEST pSCSIRequest,
771	int rcCompletion, bool fRedo, int rcReq)
772	{
773	PUSBMSD pThis = RT_FROM_MEMBER(pInterface, USBMSD, Lun0.IScsiPort);
774	PUSBMSDREQ pReq = RT_FROM_MEMBER(pSCSIRequest, USBMSDREQ, ScsiReq);
775
776	Log(("usbMsdLun0ScsiRequestCompleted: pReq=%p dCBWTag=%#x iScsiReqStatus=%u \n", pReq, pReq->Cbw.dCBWTag, rcCompletion));
777	RTCritSectEnter(&pThis->CritSect);
778
779	if (pReq->enmState != USBMSDREQSTATE_DESTROY_ON_COMPLETION)
780	{
781	Assert(pReq->enmState == USBMSDREQSTATE_EXECUTING);
782	Assert(pThis->pReq == pReq);
783	pReq->iScsiReqStatus = rcCompletion;
784
785	/*
786	* Advance the state machine. The state machine is not affected by
787	* SCSI errors.
788	*/
789	if ((pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_OUT)
790	{
791	pReq->enmState = USBMSDREQSTATE_STATUS;
792	Log(("usbMsdLun0ScsiRequestCompleted: Entering STATUS\n"));
793	}
794	else
795	{
796	pReq->enmState = USBMSDREQSTATE_DATA_TO_HOST;
797	Log(("usbMsdLun0ScsiRequestCompleted: Entering DATA_TO_HOST\n"));
798	}
799
800	/*
801	* Deal with pending to-host URBs.
802	*/
803	for (;;)
804	{
805	PVUSBURB pUrb = usbMsdQueueRemoveHead(&pThis->ToHostQueue);
806	if (!pUrb)
807	break;
808
809	/* Process it the normal way. */
810	usbMsdHandleBulkDevToHost(pThis, &pThis->aEps[1], pUrb);
811	}
812	}
813	else
814	{
815	Log(("usbMsdLun0ScsiRequestCompleted: freeing %p\n", pReq));
816	usbMsdReqFree(pReq);
817	}
818
819	if (pThis->fSignalResetSem)
820	RTSemEventMultiSignal(pThis->hEvtReset);
821
822	if (pThis->pResetUrb)
823	{
824	pThis->pResetUrb = NULL;
825	usbMsdResetWorker(pThis, pThis->pResetUrb, false /fSetConfig/);
826	}
827
828	RTCritSectLeave(&pThis->CritSect);
829	return VINF_SUCCESS;
830	}
831
832
833	/**
834	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
835	*/
836	static DECLCALLBACK(void ) usbMsdLun0QueryInterface(PPDMIBASE pInterface, const char pszIID)
837	{
838	PUSBMSD pThis = RT_FROM_MEMBER(pInterface, USBMSD, Lun0.IBase);
839	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->Lun0.IBase);
840	PDMIBASE_RETURN_INTERFACE(pszIID, PDMISCSIPORT, &pThis->Lun0.IScsiPort);
841	return NULL;
842	}
843
844
845	/**
846	* @copydoc PDMUSBREG::pfnUrbReap
847	*/
848	static DECLCALLBACK(PVUSBURB) usbMsdUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies)
849	{
850	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
851	LogFlow(("usbMsdUrbReap/#%u: cMillies=%u\n", pUsbIns->iInstance, cMillies));
852
853	RTCritSectEnter(&pThis->CritSect);
854
855	PVUSBURB pUrb = usbMsdQueueRemoveHead(&pThis->DoneQueue);
856	if (!pUrb && cMillies)
857	{
858	/* Wait */
859	pThis->fHaveDoneQueueWaiter = true;
860	RTCritSectLeave(&pThis->CritSect);
861
862	RTSemEventWait(pThis->hEvtDoneQueue, cMillies);
863
864	RTCritSectEnter(&pThis->CritSect);
865	pThis->fHaveDoneQueueWaiter = false;
866
867	pUrb = usbMsdQueueRemoveHead(&pThis->DoneQueue);
868	}
869
870	RTCritSectLeave(&pThis->CritSect);
871
872	if (pUrb)
873	Log(("usbMsdUrbReap/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
874	return pUrb;
875	}
876
877
878	/**
879	* @copydoc PDMUSBREG::pfnUrbCancel
880	*/
881	static DECLCALLBACK(int) usbMsdUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
882	{
883	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
884	LogFlow(("usbMsdUrbCancel/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
885	RTCritSectEnter(&pThis->CritSect);
886
887	/*
888	* Remove the URB from the to-host queue and move it onto the done queue.
889	*/
890	if (usbMsdQueueRemove(&pThis->ToHostQueue, pUrb))
891	usbMsdLinkDone(pThis, pUrb);
892
893	RTCritSectLeave(&pThis->CritSect);
894	return VINF_SUCCESS;
895	}
896
897
898	/**
899	* Fails an illegal SCSI request.
900	*
901	* @returns VBox status code.
902	* @param pThis The MSD instance data.
903	* @param pReq The MSD request.
904	* @param bAsc The ASC for the SCSI_SENSE_ILLEGAL_REQUEST.
905	* @param bAscq The ASC qualifier.
906	* @param pszWhy For logging why.
907	*/
908	static int usbMsdScsiIllegalRequest(PUSBMSD pThis, PUSBMSDREQ pReq, uint8_t bAsc, uint8_t bAscq, const char *pszWhy)
909	{
910	Log(("usbMsdScsiIllegalRequest: bAsc=%#x bAscq=%#x %s\n", bAsc, bAscq, pszWhy));
911
912	RT_ZERO(pReq->ScsiReqSense);
913	pReq->ScsiReqSense[0] = 0x80 \| SCSI_SENSE_RESPONSE_CODE_CURR_FIXED;
914	pReq->ScsiReqSense[2] = SCSI_SENSE_ILLEGAL_REQUEST;
915	pReq->ScsiReqSense[7] = 10;
916	pReq->ScsiReqSense[12] = SCSI_ASC_INVALID_MESSAGE;
917	pReq->ScsiReqSense[13] = 0; /* Should be ASCQ but it has the same value for success. */
918
919	usbMsdLun0ScsiRequestCompleted(&pThis->Lun0.IScsiPort, &pReq->ScsiReq, SCSI_STATUS_CHECK_CONDITION, false, VINF_SUCCESS);
920	return VINF_SUCCESS;
921	}
922
923
924	/**
925	* The SCSI driver doesn't handle SCSI_REQUEST_SENSE but instead
926	* returns the sense info with the request.
927	*
928	*/
929	static int usbMsdHandleScsiReqestSense(PUSBMSD pThis, PUSBMSDREQ pReq, PCUSBCBW pCbw)
930	{
931	Log(("usbMsdHandleScsiReqestSense: Entering EXECUTING (dCBWTag=%#x).\n", pReq->Cbw.dCBWTag));
932	Assert(pReq == pThis->pReq);
933	pReq->enmState = USBMSDREQSTATE_EXECUTING;
934
935	/* validation */
936	if ((pCbw->bmCBWFlags & USBCBW_DIR_MASK) != USBCBW_DIR_IN)
937	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INVALID_MESSAGE, 0, "direction");
938	if (pCbw->bCBWCBLength < 6)
939	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INVALID_MESSAGE, 0, "length");
940	if ((pCbw->CBWCB[1] >> 5) != pCbw->bCBWLun)
941	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0, "lun");
942	if (pCbw->bCBWLun != 0)
943	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INVALID_MESSAGE, 0, "lun0");
944	if (pCbw->CBWCB[4] < 6)
945	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0, "out length");
946
947	/* If the previous command succeeded successfully, whip up some sense data. */
948	if ( pReq->iScsiReqStatus == SCSI_STATUS_OK
949	&& pReq->ScsiReqSense[0] == 0)
950	{
951	RT_ZERO(pReq->ScsiReqSense);
952	#if 0 /** @todo something upsets linux about this stuff. Needs investigation. */
953	pReq->ScsiReqSense[0] = 0x80 \| SCSI_SENSE_RESPONSE_CODE_CURR_FIXED;
954	pReq->ScsiReqSense[0] = SCSI_SENSE_RESPONSE_CODE_CURR_FIXED;
955	pReq->ScsiReqSense[2] = SCSI_SENSE_NONE;
956	pReq->ScsiReqSense[7] = 10;
957	pReq->ScsiReqSense[12] = SCSI_ASC_NONE;
958	pReq->ScsiReqSense[13] = SCSI_ASC_NONE; /* Should be ASCQ but it has the same value for success. */
959	#endif
960	}
961
962	/* Copy the data into the result buffer. */
963	size_t cbCopy = RT_MIN(pCbw->dCBWDataTransferLength, sizeof(pReq->ScsiReqSense));
964	Log(("usbMsd: SCSI_REQUEST_SENSE - CBWCB[4]=%#x iOldState=%d, %u bytes, raw: %.*Rhxs\n",
965	pCbw->CBWCB[4], pReq->iScsiReqStatus, pCbw->dCBWDataTransferLength, RT_MAX(1, cbCopy), pReq->ScsiReqSense));
966	memcpy(pReq->pbBuf, &pReq->ScsiReqSense[0], cbCopy);
967
968	usbMsdReqPrepare(pReq, pCbw);
969
970	/* Do normal completion. */
971	usbMsdLun0ScsiRequestCompleted(&pThis->Lun0.IScsiPort, &pReq->ScsiReq, SCSI_STATUS_OK, false, VINF_SUCCESS);
972	return VINF_SUCCESS;
973	}
974
975
976	/**
977	* Wrapper around PDMISCSICONNECTOR::pfnSCSIRequestSend that deals with
978	* SCSI_REQUEST_SENSE.
979	*
980	* @returns VBox status code.
981	* @param pThis The MSD instance data.
982	* @param pReq The MSD request.
983	* @param pszCaller Where we're called from.
984	*/
985	static int usbMsdSubmitScsiCommand(PUSBMSD pThis, PUSBMSDREQ pReq, const char *pszCaller)
986	{
987	Log(("%s: Entering EXECUTING (dCBWTag=%#x).\n", pszCaller, pReq->Cbw.dCBWTag));
988	Assert(pReq == pThis->pReq);
989	pReq->enmState = USBMSDREQSTATE_EXECUTING;
990
991	switch (pReq->ScsiReq.pbCDB[0])
992	{
993	case SCSI_REQUEST_SENSE:
994	{
995	}
996
997	default:
998	return pThis->Lun0.pIScsiConnector->pfnSCSIRequestSend(pThis->Lun0.pIScsiConnector, &pReq->ScsiReq);
999	}
1000	}
1001
1002	/**
1003	* Validates a SCSI request before passing it down to the SCSI driver.
1004	*
1005	* @returns true / false. The request will be completed on failure.
1006	* @param pThis The MSD instance data.
1007	* @param pCbw The USB command block wrapper.
1008	* @param pUrb The URB.
1009	*/
1010	static bool usbMsdIsValidCommand(PUSBMSD pThis, PCUSBCBW pCbw, PVUSBURB pUrb)
1011	{
1012	switch (pCbw->CBWCB[0])
1013	{
1014	case SCSI_REQUEST_SENSE:
1015	/** @todo validate this. */
1016	return true;
1017
1018	default:
1019	return true;
1020	}
1021	}
1022
1023
1024	/**
1025	* Handle requests sent to the outbound (to device) bulk pipe.
1026	*/
1027	static int usbMsdHandleBulkHostToDev(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb)
1028	{
1029	/*
1030	* Stall the request if the pipe is halted.
1031	*/
1032	if (RT_UNLIKELY(pEp->fHalted))
1033	return usbMsdCompleteStall(pThis, NULL, pUrb, "Halted pipe");
1034
1035	/*
1036	* Deal with the URB according to the current state.
1037	*/
1038	PUSBMSDREQ pReq = pThis->pReq;
1039	USBMSDREQSTATE enmState = pReq ? pReq->enmState : USBMSDREQSTATE_READY;
1040	switch (enmState)
1041	{
1042	case USBMSDREQSTATE_STATUS:
1043	LogFlow(("usbMsdHandleBulkHostToDev: Skipping pending status.\n"));
1044	pReq->enmState = USBMSDREQSTATE_READY;
1045	/* fall thru */
1046
1047	/*
1048	* We're ready to receive a command. Start off by validating the
1049	* incoming request.
1050	*/
1051	case USBMSDREQSTATE_READY:
1052	{
1053	PCUSBCBW pCbw = (PUSBCBW)&pUrb->abData[0];
1054	if (pUrb->cbData < RT_UOFFSETOF(USBCBW, CBWCB[1]))
1055	{
1056	Log(("usbMsd: Bad CBW: cbData=%#x < min=%#x\n", pUrb->cbData, RT_UOFFSETOF(USBCBW, CBWCB[1]) ));
1057	return usbMsdCompleteStall(pThis, NULL, pUrb, "BAD CBW");
1058	}
1059	if (pCbw->dCBWSignature != USBCBW_SIGNATURE)
1060	{
1061	Log(("usbMsd: CBW: Invalid dCBWSignature value: %#x\n", pCbw->dCBWSignature));
1062	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1063	}
1064	Log(("usbMsd: CBW: dCBWTag=%#x dCBWDataTransferLength=%#x bmCBWFlags=%#x bCBWLun=%#x bCBWCBLength=%#x cbData=%#x fShortNotOk=%RTbool\n",
1065	pCbw->dCBWTag, pCbw->dCBWDataTransferLength, pCbw->bmCBWFlags, pCbw->bCBWLun, pCbw->bCBWCBLength, pUrb->cbData, pUrb->fShortNotOk));
1066	if (pCbw->bmCBWFlags & ~USBCBW_DIR_MASK)
1067	{
1068	Log(("usbMsd: CBW: Bad bmCBWFlags value: %#x\n", pCbw->bmCBWFlags));
1069	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1070
1071	}
1072	if (pCbw->bCBWLun != 0)
1073	{
1074	Log(("usbMsd: CBW: Bad bCBWLun value: %#x\n", pCbw->bCBWLun));
1075	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1076	}
1077	if (pCbw->bCBWCBLength == 0)
1078	{
1079	Log(("usbMsd: CBW: Bad bCBWCBLength value: %#x\n", pCbw->bCBWCBLength));
1080	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1081	}
1082	if (pUrb->cbData < RT_UOFFSETOF(USBCBW, CBWCB[pCbw->bCBWCBLength]))
1083	{
1084	Log(("usbMsd: CBW: Mismatching cbData and bCBWCBLength values: %#x vs. %#x (%#x)\n",
1085	pUrb->cbData, RT_UOFFSETOF(USBCBW, CBWCB[pCbw->bCBWCBLength]), pCbw->bCBWCBLength));
1086	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1087	}
1088	if (pCbw->dCBWDataTransferLength > _1M)
1089	{
1090	Log(("usbMsd: CBW: dCBWDataTransferLength is too large: %#x (%u)\n",
1091	pCbw->dCBWDataTransferLength, pCbw->dCBWDataTransferLength));
1092	return usbMsdCompleteStall(pThis, NULL, pUrb, "Too big transfer");
1093	}
1094
1095	if (!usbMsdIsValidCommand(pThis, pCbw, pUrb))
1096	return VINF_SUCCESS;
1097
1098	/*
1099	* Make sure we've got a request and a sufficient buffer space.
1100	*
1101	* Note! This will make sure the buffer is ZERO as well, thus
1102	* saving us the trouble of clearing the output buffer on
1103	* failure later.
1104	*/
1105	if (!pReq)
1106	{
1107	pReq = usbMsdReqAlloc(pThis->pUsbIns);
1108	if (!pReq)
1109	return usbMsdCompleteStall(pThis, NULL, pUrb, "Request allocation failure");
1110	pThis->pReq = pReq;
1111	}
1112	if (!usbMsdReqEnsureBuffer(pReq, pCbw->dCBWDataTransferLength))
1113	return usbMsdCompleteStall(pThis, NULL, pUrb, "Buffer allocation failure");
1114
1115	/*
1116	* Special case REQUEST SENSE requests, usbMsdReqPrepare will
1117	* trash the sense data otherwise.
1118	*/
1119	if (pCbw->CBWCB[0] == SCSI_REQUEST_SENSE)
1120	usbMsdHandleScsiReqestSense(pThis, pReq, pCbw);
1121	else
1122	{
1123	/*
1124	* Prepare the request. Kick it off right away if possible.
1125	*/
1126	usbMsdReqPrepare(pReq, pCbw);
1127
1128	if ( pReq->Cbw.dCBWDataTransferLength == 0
1129	\|\| (pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_IN)
1130	{
1131	int rc = usbMsdSubmitScsiCommand(pThis, pReq, "usbMsdHandleBulkHostToDev");
1132	if (RT_FAILURE(rc))
1133	{
1134	Log(("usbMsd: Failed sending SCSI request to driver: %Rrc\n", rc));
1135	return usbMsdCompleteStall(pThis, NULL, pUrb, "SCSI Submit #1");
1136	}
1137	}
1138	else
1139	{
1140	Log(("usbMsdHandleBulkHostToDev: Entering DATA_FROM_HOST.\n"));
1141	pReq->enmState = USBMSDREQSTATE_DATA_FROM_HOST;
1142	}
1143	}
1144
1145	return usbMsdCompleteOk(pThis, pUrb, 0);
1146	}
1147
1148	/*
1149	* Stuff the data into the buffer.
1150	*/
1151	case USBMSDREQSTATE_DATA_FROM_HOST:
1152	{
1153	uint32_t cbData = pUrb->cbData;
1154	uint32_t cbLeft = pReq->Cbw.dCBWDataTransferLength - pReq->offBuf;
1155	if (cbData > cbLeft)
1156	{
1157	Log(("usbMsd: Too much data: cbData=%#x offBuf=%#x dCBWDataTransferLength=%#x cbLeft=%#x\n",
1158	cbData, pReq->offBuf, pReq->Cbw.dCBWDataTransferLength, cbLeft));
1159	return usbMsdCompleteStall(pThis, NULL, pUrb, "Too much data");
1160	}
1161	memcpy(&pReq->pbBuf[pReq->offBuf], &pUrb->abData[0], cbData);
1162	pReq->offBuf += cbData;
1163
1164	if (pReq->offBuf == pReq->Cbw.dCBWDataTransferLength)
1165	{
1166	int rc = usbMsdSubmitScsiCommand(pThis, pReq, "usbMsdHandleBulkHostToDev");
1167	if (RT_FAILURE(rc))
1168	{
1169	Log(("usbMsd: Failed sending SCSI request to driver: %Rrc\n", rc));
1170	return usbMsdCompleteStall(pThis, NULL, pUrb, "SCSI Submit #2");
1171	}
1172	}
1173	return usbMsdCompleteOk(pThis, pUrb, cbData);
1174	}
1175
1176	/*
1177	* Bad state, stall.
1178	*/
1179	case USBMSDREQSTATE_DATA_TO_HOST:
1180	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state H2D: DATA_TO_HOST");
1181
1182	case USBMSDREQSTATE_EXECUTING:
1183	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state H2D: EXECUTING");
1184
1185	default:
1186	AssertMsgFailed(("enmState=%d\n", enmState));
1187	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state (H2D)");
1188	}
1189	}
1190
1191
1192	/**
1193	* Handle requests sent to the inbound (to host) bulk pipe.
1194	*/
1195	static int usbMsdHandleBulkDevToHost(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb)
1196	{
1197	/*
1198	* Stall the request if the pipe is halted OR if there is no
1199	* pending request yet.
1200	*/
1201	PUSBMSDREQ pReq = pThis->pReq;
1202	if (RT_UNLIKELY(pEp->fHalted \|\| !pReq))
1203	return usbMsdCompleteStall(pThis, NULL, pUrb, pEp->fHalted ? "Halted pipe" : "No request");
1204
1205	/*
1206	* Deal with the URB according to the state.
1207	*/
1208	switch (pReq->enmState)
1209	{
1210	/*
1211	* We've data left to transfer to the host.
1212	*/
1213	case USBMSDREQSTATE_DATA_TO_HOST:
1214	{
1215	uint32_t cbData = pUrb->cbData;
1216	uint32_t cbCopy = pReq->Cbw.dCBWDataTransferLength - pReq->offBuf;
1217	if (cbData <= cbCopy)
1218	cbCopy = cbData;
1219	else if (pUrb->fShortNotOk)
1220	{
1221	Log(("usbMsd: Requested more data that we've got; cbData=%#x offBuf=%#x dCBWDataTransferLength=%#x cbLeft=%#x\n",
1222	cbData, pReq->offBuf, pReq->Cbw.dCBWDataTransferLength, cbCopy));
1223	return usbMsdCompleteStall(pThis, NULL, pUrb, "Data underrun");
1224	}
1225	memcpy(&pUrb->abData[0], &pReq->pbBuf[pReq->offBuf], cbCopy);
1226	pReq->offBuf += cbCopy;
1227
1228	if (pReq->offBuf == pReq->Cbw.dCBWDataTransferLength)
1229	{
1230	Log(("usbMsdHandleBulkDevToHost: Entering STATUS\n"));
1231	pReq->enmState = USBMSDREQSTATE_STATUS;
1232	}
1233	return usbMsdCompleteOk(pThis, pUrb, cbCopy);
1234	}
1235
1236	/*
1237	* Status transfer.
1238	*/
1239	case USBMSDREQSTATE_STATUS:
1240	{
1241	if ((pUrb->cbData < sizeof(USBCSW)) \|\| (pUrb->cbData > sizeof(USBCSW) && pUrb->fShortNotOk))
1242	{
1243	Log(("usbMsd: Unexpected status request size: %#x (expected %#x), fShortNotOK=%RTbool\n", pUrb->cbData, sizeof(USBCSW), pUrb->fShortNotOk));
1244	return usbMsdCompleteStall(pThis, NULL, pUrb, "Invalid CSW size");
1245	}
1246
1247	/* Enter a CSW into the URB data buffer. */
1248	PUSBCSW pCsw = (PUSBCSW)&pUrb->abData[0];
1249	pCsw->dCSWSignature = USBCSW_SIGNATURE;
1250	pCsw->dCSWTag = pReq->Cbw.dCBWTag;
1251	pCsw->bCSWStatus = pReq->iScsiReqStatus == SCSI_STATUS_OK
1252	? USBCSW_STATUS_OK
1253	: pReq->iScsiReqStatus >= 0
1254	? USBCSW_STATUS_FAILED
1255	: USBCSW_STATUS_PHASE_ERROR;
1256	/** @todo the following is not always accurate; VSCSI needs
1257	* to implement residual counts properly! */
1258	if ((pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_OUT)
1259	pCsw->dCSWDataResidue = pCsw->bCSWStatus == USBCSW_STATUS_OK
1260	? pReq->Cbw.dCBWDataTransferLength - pReq->ScsiReq.cbScatterGather
1261	: pReq->Cbw.dCBWDataTransferLength;
1262	else
1263	pCsw->dCSWDataResidue = pCsw->bCSWStatus == USBCSW_STATUS_OK
1264	? 0
1265	: pReq->ScsiReq.cbScatterGather;
1266	Log(("usbMsd: CSW: dCSWTag=%#x bCSWStatus=%d dCSWDataResidue=%#x\n",
1267	pCsw->dCSWTag, pCsw->bCSWStatus, pCsw->dCSWDataResidue));
1268
1269	Log(("usbMsdHandleBulkDevToHost: Entering READY\n"));
1270	pReq->enmState = USBMSDREQSTATE_READY;
1271	return usbMsdCompleteOk(pThis, pUrb, sizeof(*pCsw));
1272	}
1273
1274	/*
1275	* Status request before we've received all (or even any) data.
1276	* Linux 2.4.31 does this sometimes. The recommended behavior is to
1277	* to accept the current data amount and execute the request. (The
1278	* alternative behavior is to stall.)
1279	*/
1280	case USBMSDREQSTATE_DATA_FROM_HOST:
1281	{
1282	if (pUrb->cbData != sizeof(USBCSW))
1283	{
1284	Log(("usbMsdHandleBulkDevToHost: DATA_FROM_HOST; cbData=%#x -> stall\n", pUrb->cbData));
1285	return usbMsdCompleteStall(pThis, NULL, pUrb, "Invalid CSW size");
1286	}
1287
1288	/* Adjust the request and kick it off. Special case the no-data
1289	case since the SCSI driver doesn't like that. */
1290	pReq->ScsiReq.cbScatterGather = pReq->offBuf;
1291	pReq->ScsiReqSeg.cbSeg = pReq->offBuf;
1292	if (!pReq->offBuf)
1293	{
1294	Log(("usbMsdHandleBulkDevToHost: Entering EXECUTING (offBuf=0x0).\n"));
1295	pReq->enmState = USBMSDREQSTATE_EXECUTING;
1296
1297	usbMsdQueueAddTail(&pThis->ToHostQueue, pUrb);
1298	LogFlow(("usbMsdHandleBulkDevToHost: Added %p:%s to the to-host queue\n", pUrb, pUrb->pszDesc));
1299
1300	usbMsdLun0ScsiRequestCompleted(&pThis->Lun0.IScsiPort, &pReq->ScsiReq, SCSI_STATUS_OK, false, VINF_SUCCESS);
1301	return VINF_SUCCESS;
1302	}
1303
1304	int rc = usbMsdSubmitScsiCommand(pThis, pReq, "usbMsdHandleBulkDevToHost");
1305	if (RT_FAILURE(rc))
1306	{
1307	Log(("usbMsd: Failed sending SCSI request to driver: %Rrc\n", rc));
1308	return usbMsdCompleteStall(pThis, NULL, pUrb, "SCSI Submit #3");
1309	}
1310
1311	/* fall thru */
1312	}
1313
1314	/*
1315	* The SCSI command is still pending, queue the URB awaiting its
1316	* completion.
1317	*/
1318	case USBMSDREQSTATE_EXECUTING:
1319	usbMsdQueueAddTail(&pThis->ToHostQueue, pUrb);
1320	LogFlow(("usbMsdHandleBulkDevToHost: Added %p:%s to the to-host queue\n", pUrb, pUrb->pszDesc));
1321	return VINF_SUCCESS;
1322
1323	/*
1324	* Bad states, stall.
1325	*/
1326	case USBMSDREQSTATE_READY:
1327	Log(("usbMsdHandleBulkDevToHost: enmState=READ (cbData=%#x)\n", pReq->enmState, pUrb->cbData));
1328	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state D2H: READY");
1329
1330	default:
1331	Log(("usbMsdHandleBulkDevToHost: enmState=%d cbData=%#x\n", pReq->enmState, pUrb->cbData));
1332	return usbMsdCompleteStall(pThis, NULL, pUrb, "Really bad state (D2H)!");
1333	}
1334	}
1335
1336
1337	/**
1338	* Handles request send to the default control pipe.
1339	*/
1340	static int usbMsdHandleDefaultPipe(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb)
1341	{
1342	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
1343	AssertReturn(pUrb->cbData >= sizeof(*pSetup), VERR_VUSB_FAILED_TO_QUEUE_URB);
1344
1345	if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_STANDARD)
1346	{
1347	switch (pSetup->bRequest)
1348	{
1349	case VUSB_REQ_GET_DESCRIPTOR:
1350	{
1351	if (pSetup->bmRequestType != (VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST))
1352	{
1353	Log(("usbMsd: Bad GET_DESCRIPTOR req: bmRequestType=%#x\n", pSetup->bmRequestType));
1354	return usbMsdCompleteStall(pThis, pEp, pUrb, "Bad GET_DESCRIPTOR");
1355	}
1356
1357	switch (pSetup->wValue >> 8)
1358	{
1359	uint32_t cbCopy;
1360
1361	case VUSB_DT_STRING:
1362	Log(("usbMsd: GET_DESCRIPTOR DT_STRING wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1363	break;
1364	case VUSB_DT_DEVICE_QUALIFIER:
1365	Log(("usbMsd: GET_DESCRIPTOR DT_DEVICE_QUALIFIER wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1366	/* Returned data is written after the setup message. */
1367	cbCopy = pUrb->cbData - sizeof(*pSetup);
1368	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbMsdDeviceQualifier));
1369	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbMsdDeviceQualifier, cbCopy);
1370	return usbMsdCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
1371	default:
1372	Log(("usbMsd: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1373	break;
1374	}
1375	break;
1376	}
1377
1378	case VUSB_REQ_CLEAR_FEATURE:
1379	break;
1380	}
1381
1382	/** @todo implement this. */
1383	Log(("usbMsd: Implement standard request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1384	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1385
1386	usbMsdCompleteStall(pThis, pEp, pUrb, "TODO: standard request stuff");
1387	}
1388	/* 3.1 Bulk-Only Mass Storage Reset */
1389	else if ( pSetup->bmRequestType == (VUSB_REQ_CLASS \| VUSB_TO_INTERFACE)
1390	&& pSetup->bRequest == 0xff
1391	&& !pSetup->wValue
1392	&& !pSetup->wLength
1393	&& pSetup->wIndex == 0)
1394	{
1395	Log(("usbMsdHandleDefaultPipe: Bulk-Only Mass Storage Reset\n"));
1396	return usbMsdResetWorker(pThis, pUrb, false /fSetConfig/);
1397	}
1398	/* 3.2 Get Max LUN, may stall if we like (but we don't). */
1399	else if ( pSetup->bmRequestType == (VUSB_REQ_CLASS \| VUSB_TO_INTERFACE \| VUSB_DIR_TO_HOST)
1400	&& pSetup->bRequest == 0xfe
1401	&& !pSetup->wValue
1402	&& pSetup->wLength == 1
1403	&& pSetup->wIndex == 0)
1404	{
1405	(uint8_t )(pSetup + 1) = 0; /* max lun is 0 */
1406	usbMsdCompleteOk(pThis, pUrb, 1);
1407	}
1408	else
1409	{
1410	Log(("usbMsd: Unknown control msg: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1411	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1412	return usbMsdCompleteStall(pThis, pEp, pUrb, "Unknown control msg");
1413	}
1414
1415	return VINF_SUCCESS;
1416	}
1417
1418
1419	/**
1420	* @copydoc PDMUSBREG::pfnQueue
1421	*/
1422	static DECLCALLBACK(int) usbMsdQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
1423	{
1424	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1425	LogFlow(("usbMsdQueue/#%u: pUrb=%p:%s EndPt=%#x\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc, pUrb->EndPt));
1426	RTCritSectEnter(&pThis->CritSect);
1427
1428	/*
1429	* Parse on a per end-point basis.
1430	*/
1431	int rc;
1432	switch (pUrb->EndPt)
1433	{
1434	case 0:
1435	rc = usbMsdHandleDefaultPipe(pThis, &pThis->aEps[0], pUrb);
1436	break;
1437
1438	case 0x81:
1439	AssertFailed();
1440	case 0x01:
1441	rc = usbMsdHandleBulkDevToHost(pThis, &pThis->aEps[1], pUrb);
1442	break;
1443
1444	case 0x02:
1445	rc = usbMsdHandleBulkHostToDev(pThis, &pThis->aEps[2], pUrb);
1446	break;
1447
1448	default:
1449	AssertMsgFailed(("EndPt=%d\n", pUrb->EndPt));
1450	rc = VERR_VUSB_FAILED_TO_QUEUE_URB;
1451	break;
1452	}
1453
1454	RTCritSectLeave(&pThis->CritSect);
1455	return rc;
1456	}
1457
1458
1459	/**
1460	* @copydoc PDMUSBREG::pfnUsbClearHaltedEndpoint
1461	*/
1462	static DECLCALLBACK(int) usbMsdUsbClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint)
1463	{
1464	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1465	LogFlow(("usbMsdUsbClearHaltedEndpoint/#%u: uEndpoint=%#x\n", pUsbIns->iInstance, uEndpoint));
1466
1467	if ((uEndpoint & ~0x80) < RT_ELEMENTS(pThis->aEps))
1468	{
1469	RTCritSectEnter(&pThis->CritSect);
1470	pThis->aEps[(uEndpoint & ~0x80)].fHalted = false;
1471	RTCritSectLeave(&pThis->CritSect);
1472	}
1473
1474	return VINF_SUCCESS;
1475	}
1476
1477
1478	/**
1479	* @copydoc PDMUSBREG::pfnUsbSetInterface
1480	*/
1481	static DECLCALLBACK(int) usbMsdUsbSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting)
1482	{
1483	LogFlow(("usbMsdUsbSetInterface/#%u: bInterfaceNumber=%u bAlternateSetting=%u\n", pUsbIns->iInstance, bInterfaceNumber, bAlternateSetting));
1484	Assert(bAlternateSetting == 0);
1485	return VINF_SUCCESS;
1486	}
1487
1488
1489	/**
1490	* @copydoc PDMUSBREG::pfnUsbSetConfiguration
1491	*/
1492	static DECLCALLBACK(int) usbMsdUsbSetConfiguration(PPDMUSBINS pUsbIns, uint8_t bConfigurationValue,
1493	const void pvOldCfgDesc, const void pvOldIfState, const void *pvNewCfgDesc)
1494	{
1495	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1496	LogFlow(("usbMsdUsbSetConfiguration/#%u: bConfigurationValue=%u\n", pUsbIns->iInstance, bConfigurationValue));
1497	Assert(bConfigurationValue == 1);
1498	RTCritSectEnter(&pThis->CritSect);
1499
1500	/*
1501	* If the same config is applied more than once, it's a kind of reset.
1502	*/
1503	if (pThis->bConfigurationValue == bConfigurationValue)
1504	usbMsdResetWorker(pThis, NULL, true /fSetConfig/); /** @todo figure out the exact difference */
1505	pThis->bConfigurationValue = bConfigurationValue;
1506
1507	RTCritSectLeave(&pThis->CritSect);
1508	return VINF_SUCCESS;
1509	}
1510
1511
1512	/**
1513	* @copydoc PDMUSBREG::pfnUsbGetDescriptorCache
1514	*/
1515	static DECLCALLBACK(PCPDMUSBDESCCACHE) usbMsdUsbGetDescriptorCache(PPDMUSBINS pUsbIns)
1516	{
1517	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1518	LogFlow(("usbMsdUsbGetDescriptorCache/#%u:\n", pUsbIns->iInstance));
1519	return &g_UsbMsdDescCache;
1520	}
1521
1522
1523	/**
1524	* @copydoc PDMUSBREG::pfnUsbReset
1525	*/
1526	static DECLCALLBACK(int) usbMsdUsbReset(PPDMUSBINS pUsbIns, bool fResetOnLinux)
1527	{
1528	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1529	LogFlow(("usbMsdUsbReset/#%u:\n", pUsbIns->iInstance));
1530	RTCritSectEnter(&pThis->CritSect);
1531
1532	int rc = usbMsdResetWorker(pThis, NULL, false /fSetConfig/);
1533
1534	RTCritSectLeave(&pThis->CritSect);
1535	return rc;
1536	}
1537
1538
1539	/**
1540	* @copydoc PDMUSBREG::pfnDestruct
1541	*/
1542	static void usbMsdDestruct(PPDMUSBINS pUsbIns)
1543	{
1544	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1545	LogFlow(("usbMsdDestruct/#%u:\n", pUsbIns->iInstance));
1546
1547	if (RTCritSectIsInitialized(&pThis->CritSect))
1548	{
1549	RTCritSectEnter(&pThis->CritSect);
1550	RTCritSectLeave(&pThis->CritSect);
1551	RTCritSectDelete(&pThis->CritSect);
1552	}
1553
1554	if (pThis->pReq)
1555	{
1556	usbMsdReqFree(pThis->pReq);
1557	pThis->pReq = NULL;
1558	}
1559
1560	if (pThis->hEvtDoneQueue != NIL_RTSEMEVENT)
1561	{
1562	RTSemEventDestroy(pThis->hEvtDoneQueue);
1563	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1564	}
1565
1566	if (pThis->hEvtReset != NIL_RTSEMEVENTMULTI)
1567	{
1568	RTSemEventMultiDestroy(pThis->hEvtReset);
1569	pThis->hEvtReset = NIL_RTSEMEVENTMULTI;
1570	}
1571	}
1572
1573
1574	/**
1575	* @copydoc PDMUSBREG::pfnConstruct
1576	*/
1577	static DECLCALLBACK(int) usbMsdConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal)
1578	{
1579	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1580	Log(("usbMsdConstruct/#%u:\n", iInstance));
1581
1582	/*
1583	* Perform the basic structure initialization first so the destructor
1584	* will not misbehave.
1585	*/
1586	pThis->pUsbIns = pUsbIns;
1587	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1588	pThis->hEvtReset = NIL_RTSEMEVENTMULTI;
1589	pThis->Lun0.IBase.pfnQueryInterface = usbMsdLun0QueryInterface;
1590	pThis->Lun0.IScsiPort.pfnSCSIRequestCompleted = usbMsdLun0ScsiRequestCompleted;
1591	usbMsdQueueInit(&pThis->ToHostQueue);
1592	usbMsdQueueInit(&pThis->DoneQueue);
1593
1594	int rc = RTCritSectInit(&pThis->CritSect);
1595	AssertRCReturn(rc, rc);
1596
1597	rc = RTSemEventCreate(&pThis->hEvtDoneQueue);
1598	AssertRCReturn(rc, rc);
1599
1600	rc = RTSemEventMultiCreate(&pThis->hEvtReset);
1601	AssertRCReturn(rc, rc);
1602
1603	/*
1604	* Validate and read the configuration.
1605	*/
1606	rc = CFGMR3ValidateConfig(pCfg, "/", "", "", "UsbMsd", iInstance);
1607	if (RT_FAILURE(rc))
1608	return rc;
1609
1610	/*
1611	* Attach the SCSI driver.
1612	*/
1613	rc = PDMUsbHlpDriverAttach(pUsbIns, 0 /iLun/, &pThis->Lun0.IBase, &pThis->Lun0.pIBase, "SCSI Port");
1614	if (RT_FAILURE(rc))
1615	return PDMUsbHlpVMSetError(pUsbIns, rc, RT_SRC_POS, N_("MSD failed to attach SCSI driver"));
1616	pThis->Lun0.pIScsiConnector = PDMIBASE_QUERY_INTERFACE(pThis->Lun0.pIBase, PDMISCSICONNECTOR);
1617	if (!pThis->Lun0.pIScsiConnector)
1618	return PDMUsbHlpVMSetError(pUsbIns, VERR_PDM_MISSING_INTERFACE_BELOW, RT_SRC_POS,
1619	N_("MSD failed to query the PDMISCSICONNECTOR from the driver below it"));
1620
1621	return VINF_SUCCESS;
1622	}
1623
1624
1625	/**
1626	* The USB Mass Storage Device (MSD) registration record.
1627	*/
1628	const PDMUSBREG g_UsbMsd =
1629	{
1630	/* u32Version */
1631	PDM_USBREG_VERSION,
1632	/* szName */
1633	"Msd",
1634	/* pszDescription */
1635	"USB Mass Storage Device, one LUN.",
1636	/* fFlags */
1637	0,
1638	/* cMaxInstances */
1639	~0U,
1640	/* cbInstance */
1641	sizeof(USBMSD),
1642	/* pfnConstruct */
1643	usbMsdConstruct,
1644	/* pfnDestruct */
1645	usbMsdDestruct,
1646	/* pfnVMInitComplete */
1647	NULL,
1648	/* pfnVMPowerOn */
1649	NULL,
1650	/* pfnVMReset */
1651	NULL,
1652	/* pfnVMSuspend */
1653	NULL,
1654	/* pfnVMResume */
1655	NULL,
1656	/* pfnVMPowerOff */
1657	NULL,
1658	/* pfnHotPlugged */
1659	NULL,
1660	/* pfnHotUnplugged */
1661	NULL,
1662	/* pfnDriverAttach */
1663	NULL,
1664	/* pfnDriverDetach */
1665	NULL,
1666	/* pfnQueryInterface */
1667	NULL,
1668	/* pfnUsbReset */
1669	usbMsdUsbReset,
1670	/* pfnUsbGetCachedDescriptors */
1671	usbMsdUsbGetDescriptorCache,
1672	/* pfnUsbSetConfiguration */
1673	usbMsdUsbSetConfiguration,
1674	/* pfnUsbSetInterface */
1675	usbMsdUsbSetInterface,
1676	/* pfnUsbClearHaltedEndpoint */
1677	usbMsdUsbClearHaltedEndpoint,
1678	/* pfnUrbNew */
1679	NULL/usbMsdUrbNew/,
1680	/* pfnQueue */
1681	usbMsdQueue,
1682	/* pfnUrbCancel */
1683	usbMsdUrbCancel,
1684	/* pfnUrbReap */
1685	usbMsdUrbReap,
1686	/* u32TheEnd */
1687	PDM_USBREG_VERSION
1688	};
1689

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source: vbox/trunk/src/VBox/Devices/Storage/UsbMsd.cpp@ 43788

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