UsbMsd.cpp@ 63942

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1	/* $Id: UsbMsd.cpp 63482 2016-08-15 14:24:48Z vboxsync $ */
2	/** @file
3	* UsbMSD - USB Mass Storage Device Emulation.
4	*/
5
6	/*
7	* Copyright (C) 2007-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_USB_MSD
23	#include <VBox/vmm/pdmusb.h>
24	#include <VBox/vmm/pdmstorageifs.h>
25	#include <VBox/log.h>
26	#include <VBox/err.h>
27	#include <VBox/scsi.h>
28	#include <iprt/assert.h>
29	#include <iprt/critsect.h>
30	#include <iprt/mem.h>
31	#include <iprt/semaphore.h>
32	#include <iprt/string.h>
33	#include <iprt/uuid.h>
34	#include "VBoxDD.h"
35
36
37	/*********************************************************************************************************************************
38	* Defined Constants And Macros *
39	*********************************************************************************************************************************/
40	/** @name USB MSD string IDs
41	* @{ */
42	#define USBMSD_STR_ID_MANUFACTURER 1
43	#define USBMSD_STR_ID_PRODUCT_HD 2
44	#define USBMSD_STR_ID_PRODUCT_CDROM 3
45	/** @} */
46
47	/** @name USB MSD vendor and product IDs
48	* @{ */
49	#define VBOX_USB_VENDOR 0x80EE
50	#define USBMSD_PID_HD 0x0030
51	#define USBMSD_PID_CD 0x0031
52	/** @} */
53
54	/** Saved state version. */
55	#define USB_MSD_SAVED_STATE_VERSION 1
56
57
58	/*********************************************************************************************************************************
59	* Structures and Typedefs *
60	*********************************************************************************************************************************/
61
62	/**
63	* USB MSD Command Block Wrapper or CBW. The command block
64	* itself (CBWCB) contains protocol-specific data (here SCSI).
65	*/
66	#pragma pack(1)
67	typedef struct USBCBW
68	{
69	uint32_t dCBWSignature;
70	#define USBCBW_SIGNATURE UINT32_C(0x43425355)
71	uint32_t dCBWTag;
72	uint32_t dCBWDataTransferLength;
73	uint8_t bmCBWFlags;
74	#define USBCBW_DIR_MASK RT_BIT(7)
75	#define USBCBW_DIR_OUT 0
76	#define USBCBW_DIR_IN RT_BIT(7)
77	uint8_t bCBWLun;
78	uint8_t bCBWCBLength;
79	uint8_t CBWCB[16];
80	} USBCBW;
81	#pragma pack()
82	AssertCompileSize(USBCBW, 31);
83	/** Pointer to a Command Block Wrapper. */
84	typedef USBCBW *PUSBCBW;
85	/** Pointer to a const Command Block Wrapper. */
86	typedef const USBCBW *PCUSBCBW;
87
88	/**
89	* USB MSD Command Status Wrapper or CSW.
90	*/
91	#pragma pack(1)
92	typedef struct USBCSW
93	{
94	uint32_t dCSWSignature;
95	#define USBCSW_SIGNATURE UINT32_C(0x53425355)
96	uint32_t dCSWTag;
97	uint32_t dCSWDataResidue;
98	#define USBCSW_STATUS_OK UINT8_C(0)
99	#define USBCSW_STATUS_FAILED UINT8_C(1)
100	#define USBCSW_STATUS_PHASE_ERROR UINT8_C(2)
101	uint8_t bCSWStatus;
102	} USBCSW;
103	#pragma pack()
104	AssertCompileSize(USBCSW, 13);
105	/** Pointer to a Command Status Wrapper. */
106	typedef USBCSW *PUSBCSW;
107	/** Pointer to a const Command Status Wrapper. */
108	typedef const USBCSW *PCUSBCSW;
109
110
111	/**
112	* The USB MSD request state.
113	*/
114	typedef enum USBMSDREQSTATE
115	{
116	/** Invalid status. */
117	USBMSDREQSTATE_INVALID = 0,
118	/** Ready to receive a new SCSI command. */
119	USBMSDREQSTATE_READY,
120	/** Waiting for the host to supply data. */
121	USBMSDREQSTATE_DATA_FROM_HOST,
122	/** The SCSI request is being executed by the driver. */
123	USBMSDREQSTATE_EXECUTING,
124	/** Have (more) data for the host. */
125	USBMSDREQSTATE_DATA_TO_HOST,
126	/** Waiting to supply status information to the host. */
127	USBMSDREQSTATE_STATUS,
128	/** Destroy the request upon completion.
129	* This is set when the SCSI request doesn't complete before for the device or
130	* mass storage reset operation times out. USBMSD::pReq will be set to NULL
131	* and the only reference to this request will be with DrvSCSI. */
132	USBMSDREQSTATE_DESTROY_ON_COMPLETION,
133	/** The end of the valid states. */
134	USBMSDREQSTATE_END,
135	/** 32bit blow up hack. */
136	USBMSDREQSTATE_32BIT_HACK = 0x7fffffff
137	} USBMSDREQSTATE;
138
139
140	/**
141	* A pending USB MSD request.
142	*/
143	typedef struct USBMSDREQ
144	{
145	/** The state of the request. */
146	USBMSDREQSTATE enmState;
147	/** The size of the data buffer. */
148	uint32_t cbBuf;
149	/** Pointer to the data buffer. */
150	uint8_t *pbBuf;
151	/** Current buffer offset. */
152	uint32_t offBuf;
153	/** The current Cbw when we're in the pending state. */
154	USBCBW Cbw;
155	/** The current SCSI request. */
156	PDMSCSIREQUEST ScsiReq;
157	/** The scatter-gather segment used by ScsiReq for describing pbBuf. */
158	RTSGSEG ScsiReqSeg;
159	/** The sense buffer for the current SCSI request. */
160	uint8_t ScsiReqSense[64];
161	/** The status of a completed SCSI request. */
162	int iScsiReqStatus;
163	/** Pointer to the USB device instance owning it. */
164	PPDMUSBINS pUsbIns;
165	} USBMSDREQ;
166	/** Pointer to a USB MSD request. */
167	typedef USBMSDREQ *PUSBMSDREQ;
168
169
170	/**
171	* Endpoint status data.
172	*/
173	typedef struct USBMSDEP
174	{
175	bool fHalted;
176	} USBMSDEP;
177	/** Pointer to the endpoint status. */
178	typedef USBMSDEP *PUSBMSDEP;
179
180
181	/**
182	* A URB queue.
183	*/
184	typedef struct USBMSDURBQUEUE
185	{
186	/** The head pointer. */
187	PVUSBURB pHead;
188	/** Where to insert the next entry. */
189	PVUSBURB *ppTail;
190	} USBMSDURBQUEUE;
191	/** Pointer to a URB queue. */
192	typedef USBMSDURBQUEUE *PUSBMSDURBQUEUE;
193	/** Pointer to a const URB queue. */
194	typedef USBMSDURBQUEUE const *PCUSBMSDURBQUEUE;
195
196
197	/**
198	* The USB MSD instance data.
199	*/
200	typedef struct USBMSD
201	{
202	/** Pointer back to the PDM USB Device instance structure. */
203	PPDMUSBINS pUsbIns;
204	/** Critical section protecting the device state. */
205	RTCRITSECT CritSect;
206
207	/** The current configuration.
208	* (0 - default, 1 - the only, i.e configured.) */
209	uint8_t bConfigurationValue;
210	#if 0
211	/** The state of the MSD (state machine).*/
212	USBMSDSTATE enmState;
213	#endif
214	/** Endpoint 0 is the default control pipe, 1 is the host->dev bulk pipe and 2
215	* is the dev->host one. */
216	USBMSDEP aEps[3];
217	/** The current request. */
218	PUSBMSDREQ pReq;
219
220	/** Pending to-host queue.
221	* The URBs waiting here are pending the completion of the current request and
222	* data or status to become available.
223	*/
224	USBMSDURBQUEUE ToHostQueue;
225
226	/** Done queue
227	* The URBs stashed here are waiting to be reaped. */
228	USBMSDURBQUEUE DoneQueue;
229	/** Signalled when adding an URB to the done queue and fHaveDoneQueueWaiter
230	* is set. */
231	RTSEMEVENT hEvtDoneQueue;
232	/** Someone is waiting on the done queue. */
233	bool fHaveDoneQueueWaiter;
234
235	/** Whether to signal the reset semaphore when the current request completes. */
236	bool fSignalResetSem;
237	/** Semaphore usbMsdUsbReset waits on when a request is executing at reset
238	* time. Only signalled when fSignalResetSem is set. */
239	RTSEMEVENTMULTI hEvtReset;
240	/** The reset URB.
241	* This is waiting for SCSI request completion before finishing the reset. */
242	PVUSBURB pResetUrb;
243	/** Indicates that PDMUsbHlpAsyncNotificationCompleted should be called when
244	* the MSD is entering the idle state. */
245	volatile bool fSignalIdle;
246
247	/** Indicates that this device is a CD-ROM. */
248	bool fIsCdrom;
249
250	/**
251	* LUN\#0 data.
252	*/
253	struct
254	{
255	/** The base interface for LUN\#0. */
256	PDMIBASE IBase;
257	/** The SCSI port interface for LUN\#0 */
258	PDMISCSIPORT IScsiPort;
259
260	/** The base interface for the SCSI driver connected to LUN\#0. */
261	PPDMIBASE pIBase;
262	/** The SCSI connector interface for the SCSI driver connected to LUN\#0. */
263	PPDMISCSICONNECTOR pIScsiConnector;
264	} Lun0;
265
266	} USBMSD;
267	/** Pointer to the USB MSD instance data. */
268	typedef USBMSD *PUSBMSD;
269
270
271	/*********************************************************************************************************************************
272	* Global Variables *
273	*********************************************************************************************************************************/
274	static const PDMUSBDESCCACHESTRING g_aUsbMsdStrings_en_US[] =
275	{
276	{ USBMSD_STR_ID_MANUFACTURER, "VirtualBox" },
277	{ USBMSD_STR_ID_PRODUCT_HD, "USB Harddisk" },
278	{ USBMSD_STR_ID_PRODUCT_CDROM, "USB CD-ROM" }
279	};
280
281	static const PDMUSBDESCCACHELANG g_aUsbMsdLanguages[] =
282	{
283	{ 0x0409, RT_ELEMENTS(g_aUsbMsdStrings_en_US), g_aUsbMsdStrings_en_US }
284	};
285
286	static const VUSBDESCENDPOINTEX g_aUsbMsdEndpointDescsFS[2] =
287	{
288	{
289	{
290	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
291	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
292	/* .bEndpointAddress = / 0x81 / ep=1, in */,
293	/* .bmAttributes = / 2 / bulk */,
294	/* .wMaxPacketSize = / 64 / maximum possible */,
295	/* .bInterval = / 0 / not applicable for bulk EP */
296	},
297	/* .pvMore = */ NULL,
298	/* .pvClass = */ NULL,
299	/* .cbClass = */ 0,
300	/* .pvSsepc = */ NULL,
301	/* .cbSsepc = */ 0
302	},
303	{
304	{
305	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
306	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
307	/* .bEndpointAddress = / 0x02 / ep=2, out */,
308	/* .bmAttributes = / 2 / bulk */,
309	/* .wMaxPacketSize = / 64 / maximum possible */,
310	/* .bInterval = / 0 / not applicable for bulk EP */
311	},
312	/* .pvMore = */ NULL,
313	/* .pvClass = */ NULL,
314	/* .cbClass = */ 0,
315	/* .pvSsepc = */ NULL,
316	/* .cbSsepc = */ 0
317	}
318	};
319
320	static const VUSBDESCENDPOINTEX g_aUsbMsdEndpointDescsHS[2] =
321	{
322	{
323	{
324	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
325	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
326	/* .bEndpointAddress = / 0x81 / ep=1, in */,
327	/* .bmAttributes = / 2 / bulk */,
328	/* .wMaxPacketSize = / 512 / HS bulk packet size */,
329	/* .bInterval = / 0 / no NAKs */
330	},
331	/* .pvMore = */ NULL,
332	/* .pvClass = */ NULL,
333	/* .cbClass = */ 0,
334	/* .pvSsepc = */ NULL,
335	/* .cbSsepc = */ 0
336	},
337	{
338	{
339	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
340	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
341	/* .bEndpointAddress = / 0x02 / ep=2, out */,
342	/* .bmAttributes = / 2 / bulk */,
343	/* .wMaxPacketSize = / 512 / HS bulk packet size */,
344	/* .bInterval = / 0 / no NAKs */
345	},
346	/* .pvMore = */ NULL,
347	/* .pvClass = */ NULL,
348	/* .cbClass = */ 0,
349	/* .pvSsepc = */ NULL,
350	/* .cbSsepc = */ 0
351	}
352	};
353
354	static const VUSBDESCSSEPCOMPANION g_aUsbMsdEpCompanionSS =
355	{
356	/* .bLength = */ sizeof(VUSBDESCSSEPCOMPANION),
357	/* .bDescriptorType = */ VUSB_DT_SS_ENDPOINT_COMPANION,
358	/* .bMaxBurst = / 15 / we can burst all the way */,
359	/* .bmAttributes = / 0 / no streams */,
360	/* .wBytesPerInterval = / 0 / not a periodic endpoint */
361	};
362
363	static const VUSBDESCENDPOINTEX g_aUsbMsdEndpointDescsSS[2] =
364	{
365	{
366	{
367	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
368	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
369	/* .bEndpointAddress = / 0x81 / ep=1, in */,
370	/* .bmAttributes = / 2 / bulk */,
371	/* .wMaxPacketSize = / 1024 / SS bulk packet size */,
372	/* .bInterval = / 0 / no NAKs */
373	},
374	/* .pvMore = */ NULL,
375	/* .pvClass = */ NULL,
376	/* .cbClass = */ 0,
377	/* .pvSsepc = */ &g_aUsbMsdEpCompanionSS,
378	/* .cbSsepc = */ sizeof(g_aUsbMsdEpCompanionSS)
379	},
380	{
381	{
382	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
383	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
384	/* .bEndpointAddress = / 0x02 / ep=2, out */,
385	/* .bmAttributes = / 2 / bulk */,
386	/* .wMaxPacketSize = / 1024 / SS bulk packet size */,
387	/* .bInterval = / 0 / no NAKs */
388	},
389	/* .pvMore = */ NULL,
390	/* .pvClass = */ NULL,
391	/* .cbClass = */ 0,
392	/* .pvSsepc = */ &g_aUsbMsdEpCompanionSS,
393	/* .cbSsepc = */ sizeof(g_aUsbMsdEpCompanionSS)
394	}
395	};
396
397	static const VUSBDESCINTERFACEEX g_UsbMsdInterfaceDescFS =
398	{
399	{
400	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
401	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
402	/* .bInterfaceNumber = */ 0,
403	/* .bAlternateSetting = */ 0,
404	/* .bNumEndpoints = */ 2,
405	/* .bInterfaceClass = / 8 / Mass Storage */,
406	/* .bInterfaceSubClass = / 6 / SCSI transparent command set */,
407	/* .bInterfaceProtocol = / 0x50 / Bulk-Only Transport */,
408	/* .iInterface = */ 0
409	},
410	/* .pvMore = */ NULL,
411	/* .pvClass = */ NULL,
412	/* .cbClass = */ 0,
413	&g_aUsbMsdEndpointDescsFS[0],
414	/* .pIAD = */ NULL,
415	/* .cbIAD = */ 0
416	};
417
418	static const VUSBDESCINTERFACEEX g_UsbMsdInterfaceDescHS =
419	{
420	{
421	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
422	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
423	/* .bInterfaceNumber = */ 0,
424	/* .bAlternateSetting = */ 0,
425	/* .bNumEndpoints = */ 2,
426	/* .bInterfaceClass = / 8 / Mass Storage */,
427	/* .bInterfaceSubClass = / 6 / SCSI transparent command set */,
428	/* .bInterfaceProtocol = / 0x50 / Bulk-Only Transport */,
429	/* .iInterface = */ 0
430	},
431	/* .pvMore = */ NULL,
432	/* .pvClass = */ NULL,
433	/* .cbClass = */ 0,
434	&g_aUsbMsdEndpointDescsHS[0],
435	/* .pIAD = */ NULL,
436	/* .cbIAD = */ 0
437	};
438
439	static const VUSBDESCINTERFACEEX g_UsbMsdInterfaceDescSS =
440	{
441	{
442	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
443	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
444	/* .bInterfaceNumber = */ 0,
445	/* .bAlternateSetting = */ 0,
446	/* .bNumEndpoints = */ 2,
447	/* .bInterfaceClass = / 8 / Mass Storage */,
448	/* .bInterfaceSubClass = / 6 / SCSI transparent command set */,
449	/* .bInterfaceProtocol = / 0x50 / Bulk-Only Transport */,
450	/* .iInterface = */ 0
451	},
452	/* .pvMore = */ NULL,
453	/* .pvClass = */ NULL,
454	/* .cbClass = */ 0,
455	&g_aUsbMsdEndpointDescsSS[0],
456	/* .pIAD = */ NULL,
457	/* .cbIAD = */ 0
458	};
459
460	static const VUSBINTERFACE g_aUsbMsdInterfacesFS[] =
461	{
462	{ &g_UsbMsdInterfaceDescFS, /* .cSettings = */ 1 },
463	};
464
465	static const VUSBINTERFACE g_aUsbMsdInterfacesHS[] =
466	{
467	{ &g_UsbMsdInterfaceDescHS, /* .cSettings = */ 1 },
468	};
469
470	static const VUSBINTERFACE g_aUsbMsdInterfacesSS[] =
471	{
472	{ &g_UsbMsdInterfaceDescSS, /* .cSettings = */ 1 },
473	};
474
475	static const VUSBDESCCONFIGEX g_UsbMsdConfigDescFS =
476	{
477	{
478	/* .bLength = */ sizeof(VUSBDESCCONFIG),
479	/* .bDescriptorType = */ VUSB_DT_CONFIG,
480	/* .wTotalLength = / 0 / recalculated on read */,
481	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbMsdInterfacesFS),
482	/* .bConfigurationValue =*/ 1,
483	/* .iConfiguration = */ 0,
484	/* .bmAttributes = */ RT_BIT(7),
485	/* .MaxPower = / 50 / 100mA */
486	},
487	NULL, /* pvMore */
488	&g_aUsbMsdInterfacesFS[0],
489	NULL /* pvOriginal */
490	};
491
492	static const VUSBDESCCONFIGEX g_UsbMsdConfigDescHS =
493	{
494	{
495	/* .bLength = */ sizeof(VUSBDESCCONFIG),
496	/* .bDescriptorType = */ VUSB_DT_CONFIG,
497	/* .wTotalLength = / 0 / recalculated on read */,
498	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbMsdInterfacesHS),
499	/* .bConfigurationValue =*/ 1,
500	/* .iConfiguration = */ 0,
501	/* .bmAttributes = */ RT_BIT(7),
502	/* .MaxPower = / 50 / 100mA */
503	},
504	NULL, /* pvMore */
505	&g_aUsbMsdInterfacesHS[0],
506	NULL /* pvOriginal */
507	};
508
509	static const VUSBDESCCONFIGEX g_UsbMsdConfigDescSS =
510	{
511	{
512	/* .bLength = */ sizeof(VUSBDESCCONFIG),
513	/* .bDescriptorType = */ VUSB_DT_CONFIG,
514	/* .wTotalLength = / 0 / recalculated on read */,
515	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbMsdInterfacesSS),
516	/* .bConfigurationValue =*/ 1,
517	/* .iConfiguration = */ 0,
518	/* .bmAttributes = */ RT_BIT(7),
519	/* .MaxPower = / 50 / 100mA */
520	},
521	NULL, /* pvMore */
522	&g_aUsbMsdInterfacesSS[0],
523	NULL /* pvOriginal */
524	};
525
526	static const VUSBDESCDEVICE g_UsbMsdDeviceDesc20 =
527	{
528	/* .bLength = */ sizeof(g_UsbMsdDeviceDesc20),
529	/* .bDescriptorType = */ VUSB_DT_DEVICE,
530	/* .bcdUsb = / 0x200, / USB 2.0 */
531	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
532	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
533	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
534	/* .bMaxPacketSize0 = */ 64,
535	/* .idVendor = */ VBOX_USB_VENDOR,
536	/* .idProduct = */ USBMSD_PID_HD,
537	/* .bcdDevice = / 0x0100, / 1.0 */
538	/* .iManufacturer = */ USBMSD_STR_ID_MANUFACTURER,
539	/* .iProduct = */ USBMSD_STR_ID_PRODUCT_HD,
540	/* .iSerialNumber = */ 0,
541	/* .bNumConfigurations = */ 1
542	};
543
544	static const VUSBDESCDEVICE g_UsbCdDeviceDesc20 =
545	{
546	/* .bLength = */ sizeof(g_UsbCdDeviceDesc20),
547	/* .bDescriptorType = */ VUSB_DT_DEVICE,
548	/* .bcdUsb = / 0x200, / USB 2.0 */
549	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
550	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
551	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
552	/* .bMaxPacketSize0 = */ 64,
553	/* .idVendor = */ VBOX_USB_VENDOR,
554	/* .idProduct = */ USBMSD_PID_CD,
555	/* .bcdDevice = / 0x0100, / 1.0 */
556	/* .iManufacturer = */ USBMSD_STR_ID_MANUFACTURER,
557	/* .iProduct = */ USBMSD_STR_ID_PRODUCT_CDROM,
558	/* .iSerialNumber = */ 0,
559	/* .bNumConfigurations = */ 1
560	};
561
562	static const VUSBDESCDEVICE g_UsbMsdDeviceDesc30 =
563	{
564	/* .bLength = */ sizeof(g_UsbMsdDeviceDesc30),
565	/* .bDescriptorType = */ VUSB_DT_DEVICE,
566	/* .bcdUsb = / 0x300, / USB 2.0 */
567	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
568	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
569	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
570	/* .bMaxPacketSize0 = / 9 / 512, the only option for USB3. */,
571	/* .idVendor = */ VBOX_USB_VENDOR,
572	/* .idProduct = */ USBMSD_PID_HD,
573	/* .bcdDevice = / 0x0110, / 1.10 */
574	/* .iManufacturer = */ USBMSD_STR_ID_MANUFACTURER,
575	/* .iProduct = */ USBMSD_STR_ID_PRODUCT_HD,
576	/* .iSerialNumber = */ 0,
577	/* .bNumConfigurations = */ 1
578	};
579
580	static const VUSBDESCDEVICE g_UsbCdDeviceDesc30 =
581	{
582	/* .bLength = */ sizeof(g_UsbCdDeviceDesc30),
583	/* .bDescriptorType = */ VUSB_DT_DEVICE,
584	/* .bcdUsb = / 0x300, / USB 2.0 */
585	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
586	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
587	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
588	/* .bMaxPacketSize0 = / 9 / 512, the only option for USB3. */,
589	/* .idVendor = */ VBOX_USB_VENDOR,
590	/* .idProduct = */ USBMSD_PID_CD,
591	/* .bcdDevice = / 0x0110, / 1.10 */
592	/* .iManufacturer = */ USBMSD_STR_ID_MANUFACTURER,
593	/* .iProduct = */ USBMSD_STR_ID_PRODUCT_CDROM,
594	/* .iSerialNumber = */ 0,
595	/* .bNumConfigurations = */ 1
596	};
597
598	static const VUSBDEVICEQUALIFIER g_UsbMsdDeviceQualifier =
599	{
600	/* .bLength = */ sizeof(g_UsbMsdDeviceQualifier),
601	/* .bDescriptorType = */ VUSB_DT_DEVICE_QUALIFIER,
602	/* .bcdUsb = / 0x200, / USB 2.0 */
603	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
604	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
605	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
606	/* .bMaxPacketSize0 = */ 64,
607	/* .bNumConfigurations = */ 1,
608	/* .bReserved = */ 0
609	};
610
611	static const struct {
612	VUSBDESCBOS bos;
613	VUSBDESCSSDEVCAP sscap;
614	} g_UsbMsdBOS =
615	{
616	{
617	/* .bLength = */ sizeof(g_UsbMsdBOS.bos),
618	/* .bDescriptorType = */ VUSB_DT_BOS,
619	/* .wTotalLength = */ sizeof(g_UsbMsdBOS),
620	/* .bNumDeviceCaps = */ 1
621	},
622	{
623	/* .bLength = */ sizeof(VUSBDESCSSDEVCAP),
624	/* .bDescriptorType = */ VUSB_DT_DEVICE_CAPABILITY,
625	/* .bDevCapabilityType = */ VUSB_DCT_SUPERSPEED_USB,
626	/* .bmAttributes = / 0 / No LTM. */,
627	/* .wSpeedsSupported = / 0xe / Any speed is good. */,
628	/* .bFunctionalitySupport = / 2 / Want HS at least. */,
629	/* .bU1DevExitLat = / 0, / We are blazingly fast. */
630	/* .wU2DevExitLat = */ 0
631	}
632	};
633
634	static const PDMUSBDESCCACHE g_UsbMsdDescCacheFS =
635	{
636	/* .pDevice = */ &g_UsbMsdDeviceDesc20,
637	/* .paConfigs = */ &g_UsbMsdConfigDescFS,
638	/* .paLanguages = */ g_aUsbMsdLanguages,
639	/* .cLanguages = */ RT_ELEMENTS(g_aUsbMsdLanguages),
640	/* .fUseCachedDescriptors = */ true,
641	/* .fUseCachedStringsDescriptors = */ true
642	};
643
644	static const PDMUSBDESCCACHE g_UsbCdDescCacheFS =
645	{
646	/* .pDevice = */ &g_UsbCdDeviceDesc20,
647	/* .paConfigs = */ &g_UsbMsdConfigDescFS,
648	/* .paLanguages = */ g_aUsbMsdLanguages,
649	/* .cLanguages = */ RT_ELEMENTS(g_aUsbMsdLanguages),
650	/* .fUseCachedDescriptors = */ true,
651	/* .fUseCachedStringsDescriptors = */ true
652	};
653
654	static const PDMUSBDESCCACHE g_UsbMsdDescCacheHS =
655	{
656	/* .pDevice = */ &g_UsbMsdDeviceDesc20,
657	/* .paConfigs = */ &g_UsbMsdConfigDescHS,
658	/* .paLanguages = */ g_aUsbMsdLanguages,
659	/* .cLanguages = */ RT_ELEMENTS(g_aUsbMsdLanguages),
660	/* .fUseCachedDescriptors = */ true,
661	/* .fUseCachedStringsDescriptors = */ true
662	};
663
664	static const PDMUSBDESCCACHE g_UsbCdDescCacheHS =
665	{
666	/* .pDevice = */ &g_UsbCdDeviceDesc20,
667	/* .paConfigs = */ &g_UsbMsdConfigDescHS,
668	/* .paLanguages = */ g_aUsbMsdLanguages,
669	/* .cLanguages = */ RT_ELEMENTS(g_aUsbMsdLanguages),
670	/* .fUseCachedDescriptors = */ true,
671	/* .fUseCachedStringsDescriptors = */ true
672	};
673
674	static const PDMUSBDESCCACHE g_UsbMsdDescCacheSS =
675	{
676	/* .pDevice = */ &g_UsbMsdDeviceDesc30,
677	/* .paConfigs = */ &g_UsbMsdConfigDescSS,
678	/* .paLanguages = */ g_aUsbMsdLanguages,
679	/* .cLanguages = */ RT_ELEMENTS(g_aUsbMsdLanguages),
680	/* .fUseCachedDescriptors = */ true,
681	/* .fUseCachedStringsDescriptors = */ true
682	};
683
684	static const PDMUSBDESCCACHE g_UsbCdDescCacheSS =
685	{
686	/* .pDevice = */ &g_UsbCdDeviceDesc30,
687	/* .paConfigs = */ &g_UsbMsdConfigDescSS,
688	/* .paLanguages = */ g_aUsbMsdLanguages,
689	/* .cLanguages = */ RT_ELEMENTS(g_aUsbMsdLanguages),
690	/* .fUseCachedDescriptors = */ true,
691	/* .fUseCachedStringsDescriptors = */ true
692	};
693
694
695	/*********************************************************************************************************************************
696	* Internal Functions *
697	*********************************************************************************************************************************/
698	static int usbMsdHandleBulkDevToHost(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb);
699
700
701	/**
702	* Initializes an URB queue.
703	*
704	* @param pQueue The URB queue.
705	*/
706	static void usbMsdQueueInit(PUSBMSDURBQUEUE pQueue)
707	{
708	pQueue->pHead = NULL;
709	pQueue->ppTail = &pQueue->pHead;
710	}
711
712
713
714	/**
715	* Inserts an URB at the end of the queue.
716	*
717	* @param pQueue The URB queue.
718	* @param pUrb The URB to insert.
719	*/
720	DECLINLINE(void) usbMsdQueueAddTail(PUSBMSDURBQUEUE pQueue, PVUSBURB pUrb)
721	{
722	pUrb->Dev.pNext = NULL;
723	*pQueue->ppTail = pUrb;
724	pQueue->ppTail = &pUrb->Dev.pNext;
725	}
726
727
728	/**
729	* Unlinks the head of the queue and returns it.
730	*
731	* @returns The head entry.
732	* @param pQueue The URB queue.
733	*/
734	DECLINLINE(PVUSBURB) usbMsdQueueRemoveHead(PUSBMSDURBQUEUE pQueue)
735	{
736	PVUSBURB pUrb = pQueue->pHead;
737	if (pUrb)
738	{
739	PVUSBURB pNext = pUrb->Dev.pNext;
740	pQueue->pHead = pNext;
741	if (!pNext)
742	pQueue->ppTail = &pQueue->pHead;
743	else
744	pUrb->Dev.pNext = NULL;
745	}
746	return pUrb;
747	}
748
749
750	/**
751	* Removes an URB from anywhere in the queue.
752	*
753	* @returns true if found, false if not.
754	* @param pQueue The URB queue.
755	* @param pUrb The URB to remove.
756	*/
757	DECLINLINE(bool) usbMsdQueueRemove(PUSBMSDURBQUEUE pQueue, PVUSBURB pUrb)
758	{
759	PVUSBURB pCur = pQueue->pHead;
760	if (pCur == pUrb)
761	pQueue->pHead = pUrb->Dev.pNext;
762	else
763	{
764	while (pCur)
765	{
766	if (pCur->Dev.pNext == pUrb)
767	{
768	pCur->Dev.pNext = pUrb->Dev.pNext;
769	break;
770	}
771	pCur = pCur->Dev.pNext;
772	}
773	if (!pCur)
774	return false;
775	}
776	if (!pUrb->Dev.pNext)
777	pQueue->ppTail = &pQueue->pHead;
778	return true;
779	}
780
781
782	#ifdef VBOX_STRICT
783	/**
784	* Checks if the queue is empty or not.
785	*
786	* @returns true if it is, false if it isn't.
787	* @param pQueue The URB queue.
788	*/
789	DECLINLINE(bool) usbMsdQueueIsEmpty(PCUSBMSDURBQUEUE pQueue)
790	{
791	return pQueue->pHead == NULL;
792	}
793	#endif /* VBOX_STRICT */
794
795
796	/**
797	* Links an URB into the done queue.
798	*
799	* @param pThis The MSD instance.
800	* @param pUrb The URB.
801	*/
802	static void usbMsdLinkDone(PUSBMSD pThis, PVUSBURB pUrb)
803	{
804	usbMsdQueueAddTail(&pThis->DoneQueue, pUrb);
805
806	if (pThis->fHaveDoneQueueWaiter)
807	{
808	int rc = RTSemEventSignal(pThis->hEvtDoneQueue);
809	AssertRC(rc);
810	}
811	}
812
813
814
815
816	/**
817	* Allocates a new request and does basic init.
818	*
819	* @returns Pointer to the new request. NULL if we're out of memory.
820	* @param pUsbIns The instance allocating it.
821	*/
822	static PUSBMSDREQ usbMsdReqAlloc(PPDMUSBINS pUsbIns)
823	{
824	PUSBMSDREQ pReq = (PUSBMSDREQ)PDMUsbHlpMMHeapAllocZ(pUsbIns, sizeof(*pReq));
825	if (pReq)
826	{
827	pReq->enmState = USBMSDREQSTATE_READY;
828	pReq->iScsiReqStatus = -1;
829	pReq->pUsbIns = pUsbIns;
830	}
831	else
832	LogRel(("usbMsdReqAlloc: Out of memory\n"));
833	return pReq;
834	}
835
836
837	/**
838	* Frees a request.
839	*
840	* @param pReq The request.
841	*/
842	static void usbMsdReqFree(PUSBMSDREQ pReq)
843	{
844	/*
845	* Check the input.
846	*/
847	AssertReturnVoid( pReq->enmState > USBMSDREQSTATE_INVALID
848	&& pReq->enmState != USBMSDREQSTATE_EXECUTING
849	&& pReq->enmState < USBMSDREQSTATE_END);
850	PPDMUSBINS pUsbIns = pReq->pUsbIns;
851	AssertPtrReturnVoid(pUsbIns);
852	AssertReturnVoid(PDM_VERSION_ARE_COMPATIBLE(pUsbIns->u32Version, PDM_USBINS_VERSION));
853
854	/*
855	* Invalidate it and free the associated resources.
856	*/
857	pReq->enmState = USBMSDREQSTATE_INVALID;
858	pReq->cbBuf = 0;
859	pReq->offBuf = 0;
860	pReq->ScsiReq.pbCDB = NULL;
861	pReq->ScsiReq.paScatterGatherHead = NULL;
862	pReq->ScsiReq.pbSenseBuffer = NULL;
863	pReq->ScsiReq.pvUser = NULL;
864	pReq->ScsiReqSeg.cbSeg = 0;
865	pReq->ScsiReqSeg.pvSeg = NULL;
866
867	if (pReq->pbBuf)
868	{
869	PDMUsbHlpMMHeapFree(pUsbIns, pReq->pbBuf);
870	pReq->pbBuf = NULL;
871	}
872
873	PDMUsbHlpMMHeapFree(pUsbIns, pReq);
874	}
875
876
877	/**
878	* Prepares a request for execution or data buffering.
879	*
880	* @param pReq The request.
881	* @param pCbw The SCSI command block wrapper.
882	*/
883	static void usbMsdReqPrepare(PUSBMSDREQ pReq, PCUSBCBW pCbw)
884	{
885	/* Copy the CBW */
886	size_t cbCopy = RT_OFFSETOF(USBCBW, CBWCB[pCbw->bCBWCBLength]);
887	memcpy(&pReq->Cbw, pCbw, cbCopy);
888	memset((uint8_t *)&pReq->Cbw + cbCopy, 0, sizeof(pReq->Cbw) - cbCopy);
889
890	/* Setup the SCSI request. */
891	pReq->ScsiReq.uLogicalUnit = pReq->Cbw.bCBWLun;
892	pReq->ScsiReq.uDataDirection = (pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_OUT
893	? PDMSCSIREQUESTTXDIR_TO_DEVICE
894	: PDMSCSIREQUESTTXDIR_FROM_DEVICE;
895	pReq->ScsiReq.cbCDB = pReq->Cbw.bCBWCBLength;
896
897	pReq->ScsiReq.pbCDB = &pReq->Cbw.CBWCB[0];
898	pReq->offBuf = 0;
899	pReq->ScsiReqSeg.pvSeg = pReq->pbBuf;
900	pReq->ScsiReqSeg.cbSeg = pReq->Cbw.dCBWDataTransferLength;
901	pReq->ScsiReq.cbScatterGather = pReq->Cbw.dCBWDataTransferLength;
902	pReq->ScsiReq.cScatterGatherEntries = 1;
903	pReq->ScsiReq.paScatterGatherHead = &pReq->ScsiReqSeg;
904	pReq->ScsiReq.cbSenseBuffer = sizeof(pReq->ScsiReqSense);
905	pReq->ScsiReq.pbSenseBuffer = &pReq->ScsiReqSense[0];
906	pReq->ScsiReq.pvUser = NULL;
907	RT_ZERO(pReq->ScsiReqSense);
908	pReq->iScsiReqStatus = -1;
909	}
910
911
912	/**
913	* Makes sure that there is sufficient buffer space available.
914	*
915	* @returns Success indicator (true/false)
916	* @param pReq
917	* @param cbBuf The required buffer space.
918	*/
919	static int usbMsdReqEnsureBuffer(PUSBMSDREQ pReq, uint32_t cbBuf)
920	{
921	if (RT_LIKELY(pReq->cbBuf >= cbBuf))
922	RT_BZERO(pReq->pbBuf, cbBuf);
923	else
924	{
925	PDMUsbHlpMMHeapFree(pReq->pUsbIns, pReq->pbBuf);
926	pReq->cbBuf = 0;
927
928	cbBuf = RT_ALIGN_Z(cbBuf, 0x1000);
929	pReq->pbBuf = (uint8_t *)PDMUsbHlpMMHeapAllocZ(pReq->pUsbIns, cbBuf);
930	if (!pReq->pbBuf)
931	return false;
932
933	pReq->cbBuf = cbBuf;
934	}
935	return true;
936	}
937
938
939	/**
940	* Completes the URB with a stalled state, halting the pipe.
941	*/
942	static int usbMsdCompleteStall(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb, const char *pszWhy)
943	{
944	RT_NOREF(pszWhy);
945	Log(("usbMsdCompleteStall/#%u: pUrb=%p:%s: %s\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, pszWhy));
946
947	pUrb->enmStatus = VUSBSTATUS_STALL;
948
949	/** @todo figure out if the stall is global or pipe-specific or both. */
950	if (pEp)
951	pEp->fHalted = true;
952	else
953	{
954	pThis->aEps[1].fHalted = true;
955	pThis->aEps[2].fHalted = true;
956	}
957
958	usbMsdLinkDone(pThis, pUrb);
959	return VINF_SUCCESS;
960	}
961
962
963	/**
964	* Completes the URB with a OK state.
965	*/
966	static int usbMsdCompleteOk(PUSBMSD pThis, PVUSBURB pUrb, size_t cbData)
967	{
968	Log(("usbMsdCompleteOk/#%u: pUrb=%p:%s cbData=%#zx\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, cbData));
969
970	pUrb->enmStatus = VUSBSTATUS_OK;
971	pUrb->cbData = (uint32_t)cbData;
972
973	usbMsdLinkDone(pThis, pUrb);
974	return VINF_SUCCESS;
975	}
976
977
978	/**
979	* Reset worker for usbMsdUsbReset, usbMsdUsbSetConfiguration and
980	* usbMsdUrbHandleDefaultPipe.
981	*
982	* @returns VBox status code.
983	* @param pThis The MSD instance.
984	* @param pUrb Set when usbMsdUrbHandleDefaultPipe is the
985	* caller.
986	* @param fSetConfig Set when usbMsdUsbSetConfiguration is the
987	* caller.
988	*/
989	static int usbMsdResetWorker(PUSBMSD pThis, PVUSBURB pUrb, bool fSetConfig)
990	{
991	/*
992	* Wait for the any command currently executing to complete before
993	* resetting. (We cannot cancel its execution.) How we do this depends
994	* on the reset method.
995	*/
996	PUSBMSDREQ pReq = pThis->pReq;
997	if ( pReq
998	&& pReq->enmState == USBMSDREQSTATE_EXECUTING)
999	{
1000	/* Don't try to deal with the set config variant nor multiple build-only
1001	mass storage resets. */
1002	if (pThis->pResetUrb && (pUrb \|\| fSetConfig))
1003	{
1004	Log(("usbMsdResetWorker: pResetUrb is already %p:%s - stalling\n", pThis->pResetUrb, pThis->pResetUrb->pszDesc));
1005	return usbMsdCompleteStall(pThis, NULL, pUrb, "pResetUrb");
1006	}
1007
1008	/* Bulk-Only Mass Storage Reset: Complete the reset on request completion. */
1009	if (pUrb)
1010	{
1011	pThis->pResetUrb = pUrb;
1012	Log(("usbMsdResetWorker: Setting pResetUrb to %p:%s\n", pThis->pResetUrb, pThis->pResetUrb->pszDesc));
1013	return VINF_SUCCESS;
1014	}
1015
1016	/* Device reset: Wait for up to 10 ms. If it doesn't work, ditch
1017	whoe the request structure. We'll allocate a new one when needed. */
1018	Log(("usbMsdResetWorker: Waiting for completion...\n"));
1019	Assert(!pThis->fSignalResetSem);
1020	pThis->fSignalResetSem = true;
1021	RTSemEventMultiReset(pThis->hEvtReset);
1022	RTCritSectLeave(&pThis->CritSect);
1023
1024	int rc = RTSemEventMultiWait(pThis->hEvtReset, 10 /ms/);
1025
1026	RTCritSectEnter(&pThis->CritSect);
1027	pThis->fSignalResetSem = false;
1028	if ( RT_FAILURE(rc)
1029	\|\| pReq->enmState == USBMSDREQSTATE_EXECUTING)
1030	{
1031	Log(("usbMsdResetWorker: Didn't complete, ditching the current request (%p)!\n", pReq));
1032	Assert(pReq == pThis->pReq);
1033	pReq->enmState = USBMSDREQSTATE_DESTROY_ON_COMPLETION;
1034	pThis->pReq = NULL;
1035	pReq = NULL;
1036	}
1037	}
1038
1039	/*
1040	* Reset the request and device state.
1041	*/
1042	if (pReq)
1043	{
1044	pReq->enmState = USBMSDREQSTATE_READY;
1045	pReq->iScsiReqStatus = -1;
1046	}
1047
1048	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aEps); i++)
1049	pThis->aEps[i].fHalted = false;
1050
1051	if (!pUrb && !fSetConfig) /* (only device reset) */
1052	pThis->bConfigurationValue = 0; /* default */
1053
1054	/*
1055	* Ditch all pending URBs.
1056	*/
1057	PVUSBURB pCurUrb;
1058	while ((pCurUrb = usbMsdQueueRemoveHead(&pThis->ToHostQueue)) != NULL)
1059	{
1060	pCurUrb->enmStatus = VUSBSTATUS_CRC;
1061	usbMsdLinkDone(pThis, pCurUrb);
1062	}
1063
1064	pCurUrb = pThis->pResetUrb;
1065	if (pCurUrb)
1066	{
1067	pThis->pResetUrb = NULL;
1068	pCurUrb->enmStatus = VUSBSTATUS_CRC;
1069	usbMsdLinkDone(pThis, pCurUrb);
1070	}
1071
1072	if (pUrb)
1073	return usbMsdCompleteOk(pThis, pUrb, 0);
1074	return VINF_SUCCESS;
1075	}
1076
1077
1078	/**
1079	* @interface_method_impl{PDMISCSIPORT,pfnSCSIRequestCompleted}
1080	*/
1081	static DECLCALLBACK(int) usbMsdLun0ScsiRequestCompleted(PPDMISCSIPORT pInterface, PPDMSCSIREQUEST pSCSIRequest,
1082	int rcCompletion, bool fRedo, int rcReq)
1083	{
1084	RT_NOREF(fRedo, rcReq);
1085	PUSBMSD pThis = RT_FROM_MEMBER(pInterface, USBMSD, Lun0.IScsiPort);
1086	PUSBMSDREQ pReq = RT_FROM_MEMBER(pSCSIRequest, USBMSDREQ, ScsiReq);
1087
1088	Log(("usbMsdLun0ScsiRequestCompleted: pReq=%p dCBWTag=%#x iScsiReqStatus=%u \n", pReq, pReq->Cbw.dCBWTag, rcCompletion));
1089	RTCritSectEnter(&pThis->CritSect);
1090
1091	if (pReq->enmState != USBMSDREQSTATE_DESTROY_ON_COMPLETION)
1092	{
1093	Assert(pReq->enmState == USBMSDREQSTATE_EXECUTING);
1094	Assert(pThis->pReq == pReq);
1095	pReq->iScsiReqStatus = rcCompletion;
1096
1097	/*
1098	* Advance the state machine. The state machine is not affected by
1099	* SCSI errors.
1100	*/
1101	if ((pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_OUT)
1102	{
1103	pReq->enmState = USBMSDREQSTATE_STATUS;
1104	Log(("usbMsdLun0ScsiRequestCompleted: Entering STATUS\n"));
1105	}
1106	else
1107	{
1108	pReq->enmState = USBMSDREQSTATE_DATA_TO_HOST;
1109	Log(("usbMsdLun0ScsiRequestCompleted: Entering DATA_TO_HOST\n"));
1110	}
1111
1112	/*
1113	* Deal with pending to-host URBs.
1114	*/
1115	for (;;)
1116	{
1117	PVUSBURB pUrb = usbMsdQueueRemoveHead(&pThis->ToHostQueue);
1118	if (!pUrb)
1119	break;
1120
1121	/* Process it the normal way. */
1122	usbMsdHandleBulkDevToHost(pThis, &pThis->aEps[1], pUrb);
1123	}
1124	}
1125	else
1126	{
1127	Log(("usbMsdLun0ScsiRequestCompleted: freeing %p\n", pReq));
1128	usbMsdReqFree(pReq);
1129	}
1130
1131	if (pThis->fSignalResetSem)
1132	RTSemEventMultiSignal(pThis->hEvtReset);
1133
1134	if (pThis->pResetUrb)
1135	{
1136	pThis->pResetUrb = NULL;
1137	usbMsdResetWorker(pThis, pThis->pResetUrb, false /fSetConfig/);
1138	}
1139
1140	RTCritSectLeave(&pThis->CritSect);
1141	return VINF_SUCCESS;
1142	}
1143
1144
1145	/**
1146	* @interface_method_impl{PDMISCSIPORT,pfnQueryDeviceLocation}
1147	*/
1148	static DECLCALLBACK(int) usbMsdLun0QueryDeviceLocation(PPDMISCSIPORT pInterface, const char **ppcszController,
1149	uint32_t piInstance, uint32_t piLUN)
1150	{
1151	PUSBMSD pThis = RT_FROM_MEMBER(pInterface, USBMSD, Lun0.IScsiPort);
1152	PPDMUSBINS pUsbIns = pThis->pUsbIns;
1153
1154	AssertPtrReturn(ppcszController, VERR_INVALID_POINTER);
1155	AssertPtrReturn(piInstance, VERR_INVALID_POINTER);
1156	AssertPtrReturn(piLUN, VERR_INVALID_POINTER);
1157
1158	*ppcszController = pUsbIns->pReg->szName;
1159	*piInstance = pUsbIns->iInstance;
1160	*piLUN = 0;
1161
1162	return VINF_SUCCESS;
1163	}
1164
1165
1166	/**
1167	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
1168	*/
1169	static DECLCALLBACK(void ) usbMsdLun0QueryInterface(PPDMIBASE pInterface, const char pszIID)
1170	{
1171	PUSBMSD pThis = RT_FROM_MEMBER(pInterface, USBMSD, Lun0.IBase);
1172	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->Lun0.IBase);
1173	PDMIBASE_RETURN_INTERFACE(pszIID, PDMISCSIPORT, &pThis->Lun0.IScsiPort);
1174	return NULL;
1175	}
1176
1177
1178	/**
1179	* Checks if all asynchronous I/O is finished.
1180	*
1181	* Used by usbMsdVMReset, usbMsdVMSuspend and usbMsdVMPowerOff.
1182	*
1183	* @returns true if quiesced, false if busy.
1184	* @param pUsbIns The USB device instance.
1185	*/
1186	static bool usbMsdAllAsyncIOIsFinished(PPDMUSBINS pUsbIns)
1187	{
1188	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1189
1190	if ( VALID_PTR(pThis->pReq)
1191	&& pThis->pReq->enmState == USBMSDREQSTATE_EXECUTING)
1192	return false;
1193
1194	return true;
1195	}
1196
1197	/**
1198	* @callback_method_impl{FNPDMDEVASYNCNOTIFY,
1199	* Callback employed by usbMsdVMSuspend and usbMsdVMPowerOff.}
1200	*/
1201	static DECLCALLBACK(bool) usbMsdIsAsyncSuspendOrPowerOffDone(PPDMUSBINS pUsbIns)
1202	{
1203	if (!usbMsdAllAsyncIOIsFinished(pUsbIns))
1204	return false;
1205
1206	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1207	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
1208	return true;
1209	}
1210
1211	/**
1212	* Common worker for usbMsdVMSuspend and usbMsdVMPowerOff.
1213	*/
1214	static void usbMsdSuspendOrPowerOff(PPDMUSBINS pUsbIns)
1215	{
1216	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1217
1218	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
1219	if (!usbMsdAllAsyncIOIsFinished(pUsbIns))
1220	PDMUsbHlpSetAsyncNotification(pUsbIns, usbMsdIsAsyncSuspendOrPowerOffDone);
1221	else
1222	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
1223	}
1224
1225
1226	/* -=-=-=-=- Saved State -=-=-=-=- */
1227
1228	/**
1229	* @callback_method_impl{FNSSMUSBSAVEPREP}
1230	*/
1231	static DECLCALLBACK(int) usbMsdSavePrep(PPDMUSBINS pUsbIns, PSSMHANDLE pSSM)
1232	{
1233	RT_NOREF(pSSM);
1234	#ifdef VBOX_STRICT
1235	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1236	Assert(usbMsdAllAsyncIOIsFinished(pUsbIns));
1237	Assert(usbMsdQueueIsEmpty(&pThis->ToHostQueue));
1238	Assert(usbMsdQueueIsEmpty(&pThis->DoneQueue));
1239	#else
1240	RT_NOREF(pUsbIns);
1241	#endif
1242	return VINF_SUCCESS;
1243	}
1244
1245	/**
1246	* @callback_method_impl{FNSSMUSBLOADPREP}
1247	*/
1248	static DECLCALLBACK(int) usbMsdLoadPrep(PPDMUSBINS pUsbIns, PSSMHANDLE pSSM)
1249	{
1250	RT_NOREF(pSSM);
1251	#ifdef VBOX_STRICT
1252	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1253	Assert(usbMsdAllAsyncIOIsFinished(pUsbIns));
1254	Assert(usbMsdQueueIsEmpty(&pThis->ToHostQueue));
1255	Assert(usbMsdQueueIsEmpty(&pThis->DoneQueue));
1256	#else
1257	RT_NOREF(pUsbIns);
1258	#endif
1259	return VINF_SUCCESS;
1260	}
1261
1262	/**
1263	* @callback_method_impl{FNSSMUSBLIVEEXEC}
1264	*/
1265	static DECLCALLBACK(int) usbMsdLiveExec(PPDMUSBINS pUsbIns, PSSMHANDLE pSSM, uint32_t uPass)
1266	{
1267	RT_NOREF(uPass);
1268	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1269
1270	/* config. */
1271	SSMR3PutBool(pSSM, pThis->Lun0.pIBase != NULL);
1272	return VINF_SSM_DONT_CALL_AGAIN;
1273	}
1274
1275	/**
1276	* @callback_method_impl{FNSSMUSBSAVEEXEC}
1277	*/
1278	static DECLCALLBACK(int) usbMsdSaveExec(PPDMUSBINS pUsbIns, PSSMHANDLE pSSM)
1279	{
1280	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1281	int rc;
1282
1283	/* The config */
1284	rc = usbMsdLiveExec(pUsbIns, pSSM, SSM_PASS_FINAL);
1285	AssertRCReturn(rc, rc);
1286
1287	SSMR3PutU8(pSSM, pThis->bConfigurationValue);
1288	SSMR3PutBool(pSSM, pThis->aEps[0].fHalted);
1289	SSMR3PutBool(pSSM, pThis->aEps[1].fHalted);
1290	SSMR3PutBool(pSSM, pThis->aEps[2].fHalted);
1291	SSMR3PutBool(pSSM, pThis->pReq != NULL);
1292
1293	if (pThis->pReq)
1294	{
1295	PUSBMSDREQ pReq = pThis->pReq;
1296
1297	SSMR3PutU32(pSSM, pReq->enmState);
1298	SSMR3PutU32(pSSM, pReq->cbBuf);
1299	if (pReq->cbBuf)
1300	{
1301	AssertPtr(pReq->pbBuf);
1302	SSMR3PutMem(pSSM, pReq->pbBuf, pReq->cbBuf);
1303	}
1304
1305	SSMR3PutU32(pSSM, pReq->offBuf);
1306	SSMR3PutMem(pSSM, &pReq->Cbw, sizeof(pReq->Cbw));
1307	SSMR3PutU32(pSSM, pReq->ScsiReq.uLogicalUnit);
1308	SSMR3PutU32(pSSM, pReq->ScsiReq.uDataDirection);
1309	SSMR3PutU32(pSSM, pReq->ScsiReq.cbCDB);
1310	SSMR3PutU32(pSSM, pReq->ScsiReq.cbScatterGather);
1311	SSMR3PutMem(pSSM, &pReq->ScsiReqSense[0], sizeof(pReq->ScsiReqSense));
1312	SSMR3PutS32(pSSM, pReq->iScsiReqStatus);
1313	}
1314
1315	return SSMR3PutU32(pSSM, UINT32_MAX); /* sanity/terminator */
1316	}
1317
1318	/**
1319	* @callback_method_impl{FNSSMUSBLOADEXEC}
1320	*/
1321	static DECLCALLBACK(int) usbMsdLoadExec(PPDMUSBINS pUsbIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1322	{
1323	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1324	uint32_t u32;
1325	int rc;
1326
1327	if (uVersion > USB_MSD_SAVED_STATE_VERSION)
1328	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1329
1330	/* Verify config. */
1331	bool fInUse;
1332	rc = SSMR3GetBool(pSSM, &fInUse);
1333	AssertRCReturn(rc, rc);
1334	if (fInUse != (pThis->Lun0.pIBase != NULL))
1335	return SSMR3SetCfgError(pSSM, RT_SRC_POS,
1336	N_("The %s VM is missing a USB mass storage device. Please make sure the source and target VMs have compatible storage configurations"),
1337	fInUse ? "target" : "source");
1338
1339	if (uPass == SSM_PASS_FINAL)
1340	{
1341	/* Restore data. */
1342	Assert(!pThis->pReq);
1343
1344	SSMR3GetU8(pSSM, &pThis->bConfigurationValue);
1345	SSMR3GetBool(pSSM, &pThis->aEps[0].fHalted);
1346	SSMR3GetBool(pSSM, &pThis->aEps[1].fHalted);
1347	SSMR3GetBool(pSSM, &pThis->aEps[2].fHalted);
1348	bool fReqAlloc = false;
1349	rc = SSMR3GetBool(pSSM, &fReqAlloc);
1350	AssertRCReturn(rc, rc);
1351	if (fReqAlloc)
1352	{
1353	PUSBMSDREQ pReq = usbMsdReqAlloc(pUsbIns);
1354	AssertReturn(pReq, VERR_NO_MEMORY);
1355	pThis->pReq = pReq;
1356
1357	SSMR3GetU32(pSSM, (uint32_t *)&pReq->enmState);
1358	uint32_t cbBuf = 0;
1359	rc = SSMR3GetU32(pSSM, &cbBuf);
1360	AssertRCReturn(rc, rc);
1361	if (cbBuf)
1362	{
1363	if (usbMsdReqEnsureBuffer(pReq, cbBuf))
1364	{
1365	AssertPtr(pReq->pbBuf);
1366	Assert(cbBuf == pReq->cbBuf);
1367	SSMR3GetMem(pSSM, pReq->pbBuf, pReq->cbBuf);
1368	}
1369	else
1370	return VERR_NO_MEMORY;
1371	}
1372
1373	SSMR3GetU32(pSSM, &pReq->offBuf);
1374	SSMR3GetMem(pSSM, &pReq->Cbw, sizeof(pReq->Cbw));
1375	SSMR3GetU32(pSSM, &pReq->ScsiReq.uLogicalUnit);
1376	SSMR3GetU32(pSSM, (uint32_t *)&pReq->ScsiReq.uDataDirection);
1377	SSMR3GetU32(pSSM, &pReq->ScsiReq.cbCDB);
1378	SSMR3GetU32(pSSM, &pReq->ScsiReq.cbScatterGather);
1379	SSMR3GetMem(pSSM, &pReq->ScsiReqSense[0], sizeof(pReq->ScsiReqSense));
1380	rc = SSMR3GetS32(pSSM, &pReq->iScsiReqStatus);
1381	AssertRCReturn(rc, rc);
1382
1383	/* Setup the rest of the SCSI request. */
1384	pReq->ScsiReq.cbCDB = pReq->Cbw.bCBWCBLength;
1385	pReq->ScsiReq.pbCDB = &pReq->Cbw.CBWCB[0];
1386	pReq->ScsiReqSeg.pvSeg = pReq->pbBuf;
1387	pReq->ScsiReqSeg.cbSeg = pReq->ScsiReq.cbScatterGather;
1388	pReq->ScsiReq.cScatterGatherEntries = 1;
1389	pReq->ScsiReq.paScatterGatherHead = &pReq->ScsiReqSeg;
1390	pReq->ScsiReq.cbSenseBuffer = sizeof(pReq->ScsiReqSense);
1391	pReq->ScsiReq.pbSenseBuffer = &pReq->ScsiReqSense[0];
1392	pReq->ScsiReq.pvUser = NULL;
1393	}
1394
1395	rc = SSMR3GetU32(pSSM, &u32);
1396	AssertRCReturn(rc, rc);
1397	AssertMsgReturn(u32 == UINT32_MAX, ("%#x\n", u32), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
1398	}
1399
1400	return VINF_SUCCESS;
1401	}
1402
1403
1404	/**
1405	* @interface_method_impl{PDMUSBREG,pfnUrbReap}
1406	*/
1407	static DECLCALLBACK(PVUSBURB) usbMsdUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies)
1408	{
1409	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1410	LogFlow(("usbMsdUrbReap/#%u: cMillies=%u\n", pUsbIns->iInstance, cMillies));
1411
1412	RTCritSectEnter(&pThis->CritSect);
1413
1414	PVUSBURB pUrb = usbMsdQueueRemoveHead(&pThis->DoneQueue);
1415	if (!pUrb && cMillies)
1416	{
1417	/* Wait */
1418	pThis->fHaveDoneQueueWaiter = true;
1419	RTCritSectLeave(&pThis->CritSect);
1420
1421	RTSemEventWait(pThis->hEvtDoneQueue, cMillies);
1422
1423	RTCritSectEnter(&pThis->CritSect);
1424	pThis->fHaveDoneQueueWaiter = false;
1425
1426	pUrb = usbMsdQueueRemoveHead(&pThis->DoneQueue);
1427	}
1428
1429	RTCritSectLeave(&pThis->CritSect);
1430
1431	if (pUrb)
1432	Log(("usbMsdUrbReap/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
1433	return pUrb;
1434	}
1435
1436
1437	/**
1438	* @interface_method_impl{PDMUSBREG,pfnWakeup}
1439	*/
1440	static DECLCALLBACK(int) usbMsdWakeup(PPDMUSBINS pUsbIns)
1441	{
1442	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1443	LogFlow(("usbMsdUrbReap/#%u:\n", pUsbIns->iInstance));
1444
1445	return RTSemEventSignal(pThis->hEvtDoneQueue);
1446	}
1447
1448
1449	/**
1450	* @interface_method_impl{PDMUSBREG,pfnUrbCancel}
1451	*/
1452	static DECLCALLBACK(int) usbMsdUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
1453	{
1454	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
1455	LogFlow(("usbMsdUrbCancel/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
1456	RTCritSectEnter(&pThis->CritSect);
1457
1458	/*
1459	* Remove the URB from the to-host queue and move it onto the done queue.
1460	*/
1461	if (usbMsdQueueRemove(&pThis->ToHostQueue, pUrb))
1462	usbMsdLinkDone(pThis, pUrb);
1463
1464	RTCritSectLeave(&pThis->CritSect);
1465	return VINF_SUCCESS;
1466	}
1467
1468
1469	/**
1470	* Fails an illegal SCSI request.
1471	*
1472	* @returns VBox status code.
1473	* @param pThis The MSD instance data.
1474	* @param pReq The MSD request.
1475	* @param bAsc The ASC for the SCSI_SENSE_ILLEGAL_REQUEST.
1476	* @param bAscq The ASC qualifier.
1477	* @param pszWhy For logging why.
1478	*/
1479	static int usbMsdScsiIllegalRequest(PUSBMSD pThis, PUSBMSDREQ pReq, uint8_t bAsc, uint8_t bAscq, const char *pszWhy)
1480	{
1481	RT_NOREF(bAsc, bAscq, pszWhy);
1482	Log(("usbMsdScsiIllegalRequest: bAsc=%#x bAscq=%#x %s\n", bAsc, bAscq, pszWhy));
1483
1484	RT_ZERO(pReq->ScsiReqSense);
1485	pReq->ScsiReqSense[0] = 0x80 \| SCSI_SENSE_RESPONSE_CODE_CURR_FIXED;
1486	pReq->ScsiReqSense[2] = SCSI_SENSE_ILLEGAL_REQUEST;
1487	pReq->ScsiReqSense[7] = 10;
1488	pReq->ScsiReqSense[12] = SCSI_ASC_INVALID_MESSAGE;
1489	pReq->ScsiReqSense[13] = 0; /* Should be ASCQ but it has the same value for success. */
1490
1491	usbMsdLun0ScsiRequestCompleted(&pThis->Lun0.IScsiPort, &pReq->ScsiReq, SCSI_STATUS_CHECK_CONDITION, false, VINF_SUCCESS);
1492	return VINF_SUCCESS;
1493	}
1494
1495
1496	/**
1497	* The SCSI driver doesn't handle SCSI_REQUEST_SENSE but instead
1498	* returns the sense info with the request.
1499	*
1500	*/
1501	static int usbMsdHandleScsiReqestSense(PUSBMSD pThis, PUSBMSDREQ pReq, PCUSBCBW pCbw)
1502	{
1503	Log(("usbMsdHandleScsiReqestSense: Entering EXECUTING (dCBWTag=%#x).\n", pReq->Cbw.dCBWTag));
1504	Assert(pReq == pThis->pReq);
1505	pReq->enmState = USBMSDREQSTATE_EXECUTING;
1506
1507	/* validation */
1508	if ((pCbw->bmCBWFlags & USBCBW_DIR_MASK) != USBCBW_DIR_IN)
1509	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INVALID_MESSAGE, 0, "direction");
1510	if (pCbw->bCBWCBLength < 6)
1511	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INVALID_MESSAGE, 0, "length");
1512	if ((pCbw->CBWCB[1] >> 5) != pCbw->bCBWLun)
1513	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0, "lun");
1514	if (pCbw->bCBWLun != 0)
1515	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INVALID_MESSAGE, 0, "lun0");
1516	if (pCbw->CBWCB[4] < 6)
1517	return usbMsdScsiIllegalRequest(pThis, pReq, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0, "out length");
1518
1519	/* If the previous command succeeded successfully, whip up some sense data. */
1520	if ( pReq->iScsiReqStatus == SCSI_STATUS_OK
1521	&& pReq->ScsiReqSense[0] == 0)
1522	{
1523	RT_ZERO(pReq->ScsiReqSense);
1524	#if 0 /** @todo something upsets linux about this stuff. Needs investigation. */
1525	pReq->ScsiReqSense[0] = 0x80 \| SCSI_SENSE_RESPONSE_CODE_CURR_FIXED;
1526	pReq->ScsiReqSense[0] = SCSI_SENSE_RESPONSE_CODE_CURR_FIXED;
1527	pReq->ScsiReqSense[2] = SCSI_SENSE_NONE;
1528	pReq->ScsiReqSense[7] = 10;
1529	pReq->ScsiReqSense[12] = SCSI_ASC_NONE;
1530	pReq->ScsiReqSense[13] = SCSI_ASC_NONE; /* Should be ASCQ but it has the same value for success. */
1531	#endif
1532	}
1533
1534	/* Copy the data into the result buffer. */
1535	size_t cbCopy = RT_MIN(pCbw->dCBWDataTransferLength, sizeof(pReq->ScsiReqSense));
1536	Log(("usbMsd: SCSI_REQUEST_SENSE - CBWCB[4]=%#x iOldState=%d, %u bytes, raw: %.*Rhxs\n",
1537	pCbw->CBWCB[4], pReq->iScsiReqStatus, pCbw->dCBWDataTransferLength, RT_MAX(1, cbCopy), pReq->ScsiReqSense));
1538	memcpy(pReq->pbBuf, &pReq->ScsiReqSense[0], cbCopy);
1539
1540	usbMsdReqPrepare(pReq, pCbw);
1541
1542	/* Do normal completion. */
1543	usbMsdLun0ScsiRequestCompleted(&pThis->Lun0.IScsiPort, &pReq->ScsiReq, SCSI_STATUS_OK, false, VINF_SUCCESS);
1544	return VINF_SUCCESS;
1545	}
1546
1547
1548	/**
1549	* Wrapper around PDMISCSICONNECTOR::pfnSCSIRequestSend that deals with
1550	* SCSI_REQUEST_SENSE.
1551	*
1552	* @returns VBox status code.
1553	* @param pThis The MSD instance data.
1554	* @param pReq The MSD request.
1555	* @param pszCaller Where we're called from.
1556	*/
1557	static int usbMsdSubmitScsiCommand(PUSBMSD pThis, PUSBMSDREQ pReq, const char *pszCaller)
1558	{
1559	RT_NOREF(pszCaller);
1560	Log(("%s: Entering EXECUTING (dCBWTag=%#x).\n", pszCaller, pReq->Cbw.dCBWTag));
1561	Assert(pReq == pThis->pReq);
1562	pReq->enmState = USBMSDREQSTATE_EXECUTING;
1563
1564	switch (pReq->ScsiReq.pbCDB[0])
1565	{
1566	case SCSI_REQUEST_SENSE:
1567	{
1568	}
1569
1570	default:
1571	return pThis->Lun0.pIScsiConnector->pfnSCSIRequestSend(pThis->Lun0.pIScsiConnector, &pReq->ScsiReq);
1572	}
1573	}
1574
1575	/**
1576	* Validates a SCSI request before passing it down to the SCSI driver.
1577	*
1578	* @returns true / false. The request will be completed on failure.
1579	* @param pThis The MSD instance data.
1580	* @param pCbw The USB command block wrapper.
1581	* @param pUrb The URB.
1582	*/
1583	static bool usbMsdIsValidCommand(PUSBMSD pThis, PCUSBCBW pCbw, PVUSBURB pUrb)
1584	{
1585	RT_NOREF(pThis, pUrb);
1586	switch (pCbw->CBWCB[0])
1587	{
1588	case SCSI_REQUEST_SENSE:
1589	/** @todo validate this. */
1590	return true;
1591
1592	default:
1593	return true;
1594	}
1595	}
1596
1597
1598	/**
1599	* Handle requests sent to the outbound (to device) bulk pipe.
1600	*/
1601	static int usbMsdHandleBulkHostToDev(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb)
1602	{
1603	/*
1604	* Stall the request if the pipe is halted.
1605	*/
1606	if (RT_UNLIKELY(pEp->fHalted))
1607	return usbMsdCompleteStall(pThis, NULL, pUrb, "Halted pipe");
1608
1609	/*
1610	* Deal with the URB according to the current state.
1611	*/
1612	PUSBMSDREQ pReq = pThis->pReq;
1613	USBMSDREQSTATE enmState = pReq ? pReq->enmState : USBMSDREQSTATE_READY;
1614	switch (enmState)
1615	{
1616	case USBMSDREQSTATE_STATUS:
1617	LogFlow(("usbMsdHandleBulkHostToDev: Skipping pending status.\n"));
1618	pReq->enmState = USBMSDREQSTATE_READY;
1619	/* fall thru */
1620
1621	/*
1622	* We're ready to receive a command. Start off by validating the
1623	* incoming request.
1624	*/
1625	case USBMSDREQSTATE_READY:
1626	{
1627	PCUSBCBW pCbw = (PUSBCBW)&pUrb->abData[0];
1628	if (pUrb->cbData < RT_UOFFSETOF(USBCBW, CBWCB[1]))
1629	{
1630	Log(("usbMsd: Bad CBW: cbData=%#x < min=%#x\n", pUrb->cbData, RT_UOFFSETOF(USBCBW, CBWCB[1]) ));
1631	return usbMsdCompleteStall(pThis, NULL, pUrb, "BAD CBW");
1632	}
1633	if (pCbw->dCBWSignature != USBCBW_SIGNATURE)
1634	{
1635	Log(("usbMsd: CBW: Invalid dCBWSignature value: %#x\n", pCbw->dCBWSignature));
1636	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1637	}
1638	Log(("usbMsd: CBW: dCBWTag=%#x dCBWDataTransferLength=%#x bmCBWFlags=%#x bCBWLun=%#x bCBWCBLength=%#x cbData=%#x fShortNotOk=%RTbool\n",
1639	pCbw->dCBWTag, pCbw->dCBWDataTransferLength, pCbw->bmCBWFlags, pCbw->bCBWLun, pCbw->bCBWCBLength, pUrb->cbData, pUrb->fShortNotOk));
1640	if (pCbw->bmCBWFlags & ~USBCBW_DIR_MASK)
1641	{
1642	Log(("usbMsd: CBW: Bad bmCBWFlags value: %#x\n", pCbw->bmCBWFlags));
1643	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1644
1645	}
1646	if (pCbw->bCBWLun != 0)
1647	{
1648	Log(("usbMsd: CBW: Bad bCBWLun value: %#x\n", pCbw->bCBWLun));
1649	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1650	}
1651	if (pCbw->bCBWCBLength == 0)
1652	{
1653	Log(("usbMsd: CBW: Bad bCBWCBLength value: %#x\n", pCbw->bCBWCBLength));
1654	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1655	}
1656	if (pUrb->cbData < RT_UOFFSETOF(USBCBW, CBWCB[pCbw->bCBWCBLength]))
1657	{
1658	Log(("usbMsd: CBW: Mismatching cbData and bCBWCBLength values: %#x vs. %#x (%#x)\n",
1659	pUrb->cbData, RT_UOFFSETOF(USBCBW, CBWCB[pCbw->bCBWCBLength]), pCbw->bCBWCBLength));
1660	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad CBW");
1661	}
1662	if (pCbw->dCBWDataTransferLength > _1M)
1663	{
1664	Log(("usbMsd: CBW: dCBWDataTransferLength is too large: %#x (%u)\n",
1665	pCbw->dCBWDataTransferLength, pCbw->dCBWDataTransferLength));
1666	return usbMsdCompleteStall(pThis, NULL, pUrb, "Too big transfer");
1667	}
1668
1669	if (!usbMsdIsValidCommand(pThis, pCbw, pUrb))
1670	return VINF_SUCCESS;
1671
1672	/*
1673	* Make sure we've got a request and a sufficient buffer space.
1674	*
1675	* Note! This will make sure the buffer is ZERO as well, thus
1676	* saving us the trouble of clearing the output buffer on
1677	* failure later.
1678	*/
1679	if (!pReq)
1680	{
1681	pReq = usbMsdReqAlloc(pThis->pUsbIns);
1682	if (!pReq)
1683	return usbMsdCompleteStall(pThis, NULL, pUrb, "Request allocation failure");
1684	pThis->pReq = pReq;
1685	}
1686	if (!usbMsdReqEnsureBuffer(pReq, pCbw->dCBWDataTransferLength))
1687	return usbMsdCompleteStall(pThis, NULL, pUrb, "Buffer allocation failure");
1688
1689	/*
1690	* Special case REQUEST SENSE requests, usbMsdReqPrepare will
1691	* trash the sense data otherwise.
1692	*/
1693	if (pCbw->CBWCB[0] == SCSI_REQUEST_SENSE)
1694	usbMsdHandleScsiReqestSense(pThis, pReq, pCbw);
1695	else
1696	{
1697	/*
1698	* Prepare the request. Kick it off right away if possible.
1699	*/
1700	usbMsdReqPrepare(pReq, pCbw);
1701
1702	if ( pReq->Cbw.dCBWDataTransferLength == 0
1703	\|\| (pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_IN)
1704	{
1705	int rc = usbMsdSubmitScsiCommand(pThis, pReq, "usbMsdHandleBulkHostToDev");
1706	if (RT_FAILURE(rc))
1707	{
1708	Log(("usbMsd: Failed sending SCSI request to driver: %Rrc\n", rc));
1709	return usbMsdCompleteStall(pThis, NULL, pUrb, "SCSI Submit #1");
1710	}
1711	}
1712	else
1713	{
1714	Log(("usbMsdHandleBulkHostToDev: Entering DATA_FROM_HOST.\n"));
1715	pReq->enmState = USBMSDREQSTATE_DATA_FROM_HOST;
1716	}
1717	}
1718
1719	return usbMsdCompleteOk(pThis, pUrb, pUrb->cbData);
1720	}
1721
1722	/*
1723	* Stuff the data into the buffer.
1724	*/
1725	case USBMSDREQSTATE_DATA_FROM_HOST:
1726	{
1727	uint32_t cbData = pUrb->cbData;
1728	uint32_t cbLeft = pReq->Cbw.dCBWDataTransferLength - pReq->offBuf;
1729	if (cbData > cbLeft)
1730	{
1731	Log(("usbMsd: Too much data: cbData=%#x offBuf=%#x dCBWDataTransferLength=%#x cbLeft=%#x\n",
1732	cbData, pReq->offBuf, pReq->Cbw.dCBWDataTransferLength, cbLeft));
1733	return usbMsdCompleteStall(pThis, NULL, pUrb, "Too much data");
1734	}
1735	memcpy(&pReq->pbBuf[pReq->offBuf], &pUrb->abData[0], cbData);
1736	pReq->offBuf += cbData;
1737
1738	if (pReq->offBuf == pReq->Cbw.dCBWDataTransferLength)
1739	{
1740	int rc = usbMsdSubmitScsiCommand(pThis, pReq, "usbMsdHandleBulkHostToDev");
1741	if (RT_FAILURE(rc))
1742	{
1743	Log(("usbMsd: Failed sending SCSI request to driver: %Rrc\n", rc));
1744	return usbMsdCompleteStall(pThis, NULL, pUrb, "SCSI Submit #2");
1745	}
1746	}
1747	return usbMsdCompleteOk(pThis, pUrb, cbData);
1748	}
1749
1750	/*
1751	* Bad state, stall.
1752	*/
1753	case USBMSDREQSTATE_DATA_TO_HOST:
1754	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state H2D: DATA_TO_HOST");
1755
1756	case USBMSDREQSTATE_EXECUTING:
1757	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state H2D: EXECUTING");
1758
1759	default:
1760	AssertMsgFailed(("enmState=%d\n", enmState));
1761	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state (H2D)");
1762	}
1763	}
1764
1765
1766	/**
1767	* Handle requests sent to the inbound (to host) bulk pipe.
1768	*/
1769	static int usbMsdHandleBulkDevToHost(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb)
1770	{
1771	/*
1772	* Stall the request if the pipe is halted OR if there is no
1773	* pending request yet.
1774	*/
1775	PUSBMSDREQ pReq = pThis->pReq;
1776	if (RT_UNLIKELY(pEp->fHalted \|\| !pReq))
1777	return usbMsdCompleteStall(pThis, NULL, pUrb, pEp->fHalted ? "Halted pipe" : "No request");
1778
1779	/*
1780	* Deal with the URB according to the state.
1781	*/
1782	switch (pReq->enmState)
1783	{
1784	/*
1785	* We've data left to transfer to the host.
1786	*/
1787	case USBMSDREQSTATE_DATA_TO_HOST:
1788	{
1789	uint32_t cbData = pUrb->cbData;
1790	uint32_t cbCopy = pReq->Cbw.dCBWDataTransferLength - pReq->offBuf;
1791	if (cbData <= cbCopy)
1792	cbCopy = cbData;
1793	else if (pUrb->fShortNotOk)
1794	{
1795	Log(("usbMsd: Requested more data that we've got; cbData=%#x offBuf=%#x dCBWDataTransferLength=%#x cbLeft=%#x\n",
1796	cbData, pReq->offBuf, pReq->Cbw.dCBWDataTransferLength, cbCopy));
1797	return usbMsdCompleteStall(pThis, NULL, pUrb, "Data underrun");
1798	}
1799	memcpy(&pUrb->abData[0], &pReq->pbBuf[pReq->offBuf], cbCopy);
1800	pReq->offBuf += cbCopy;
1801
1802	if (pReq->offBuf == pReq->Cbw.dCBWDataTransferLength)
1803	{
1804	Log(("usbMsdHandleBulkDevToHost: Entering STATUS\n"));
1805	pReq->enmState = USBMSDREQSTATE_STATUS;
1806	}
1807	return usbMsdCompleteOk(pThis, pUrb, cbCopy);
1808	}
1809
1810	/*
1811	* Status transfer.
1812	*/
1813	case USBMSDREQSTATE_STATUS:
1814	{
1815	if ((pUrb->cbData < sizeof(USBCSW)) \|\| (pUrb->cbData > sizeof(USBCSW) && pUrb->fShortNotOk))
1816	{
1817	Log(("usbMsd: Unexpected status request size: %#x (expected %#x), fShortNotOK=%RTbool\n", pUrb->cbData, sizeof(USBCSW), pUrb->fShortNotOk));
1818	return usbMsdCompleteStall(pThis, NULL, pUrb, "Invalid CSW size");
1819	}
1820
1821	/* Enter a CSW into the URB data buffer. */
1822	PUSBCSW pCsw = (PUSBCSW)&pUrb->abData[0];
1823	pCsw->dCSWSignature = USBCSW_SIGNATURE;
1824	pCsw->dCSWTag = pReq->Cbw.dCBWTag;
1825	pCsw->bCSWStatus = pReq->iScsiReqStatus == SCSI_STATUS_OK
1826	? USBCSW_STATUS_OK
1827	: pReq->iScsiReqStatus >= 0
1828	? USBCSW_STATUS_FAILED
1829	: USBCSW_STATUS_PHASE_ERROR;
1830	/** @todo the following is not always accurate; VSCSI needs
1831	* to implement residual counts properly! */
1832	if ((pReq->Cbw.bmCBWFlags & USBCBW_DIR_MASK) == USBCBW_DIR_OUT)
1833	pCsw->dCSWDataResidue = pCsw->bCSWStatus == USBCSW_STATUS_OK
1834	? pReq->Cbw.dCBWDataTransferLength - pReq->ScsiReq.cbScatterGather
1835	: pReq->Cbw.dCBWDataTransferLength;
1836	else
1837	pCsw->dCSWDataResidue = pCsw->bCSWStatus == USBCSW_STATUS_OK
1838	? 0
1839	: pReq->ScsiReq.cbScatterGather;
1840	Log(("usbMsd: CSW: dCSWTag=%#x bCSWStatus=%d dCSWDataResidue=%#x\n",
1841	pCsw->dCSWTag, pCsw->bCSWStatus, pCsw->dCSWDataResidue));
1842
1843	Log(("usbMsdHandleBulkDevToHost: Entering READY\n"));
1844	pReq->enmState = USBMSDREQSTATE_READY;
1845	return usbMsdCompleteOk(pThis, pUrb, sizeof(*pCsw));
1846	}
1847
1848	/*
1849	* Status request before we've received all (or even any) data.
1850	* Linux 2.4.31 does this sometimes. The recommended behavior is to
1851	* to accept the current data amount and execute the request. (The
1852	* alternative behavior is to stall.)
1853	*/
1854	case USBMSDREQSTATE_DATA_FROM_HOST:
1855	{
1856	if (pUrb->cbData != sizeof(USBCSW))
1857	{
1858	Log(("usbMsdHandleBulkDevToHost: DATA_FROM_HOST; cbData=%#x -> stall\n", pUrb->cbData));
1859	return usbMsdCompleteStall(pThis, NULL, pUrb, "Invalid CSW size");
1860	}
1861
1862	/* Adjust the request and kick it off. Special case the no-data
1863	case since the SCSI driver doesn't like that. */
1864	pReq->ScsiReq.cbScatterGather = pReq->offBuf;
1865	pReq->ScsiReqSeg.cbSeg = pReq->offBuf;
1866	if (!pReq->offBuf)
1867	{
1868	Log(("usbMsdHandleBulkDevToHost: Entering EXECUTING (offBuf=0x0).\n"));
1869	pReq->enmState = USBMSDREQSTATE_EXECUTING;
1870
1871	usbMsdQueueAddTail(&pThis->ToHostQueue, pUrb);
1872	LogFlow(("usbMsdHandleBulkDevToHost: Added %p:%s to the to-host queue\n", pUrb, pUrb->pszDesc));
1873
1874	usbMsdLun0ScsiRequestCompleted(&pThis->Lun0.IScsiPort, &pReq->ScsiReq, SCSI_STATUS_OK, false, VINF_SUCCESS);
1875	return VINF_SUCCESS;
1876	}
1877
1878	int rc = usbMsdSubmitScsiCommand(pThis, pReq, "usbMsdHandleBulkDevToHost");
1879	if (RT_FAILURE(rc))
1880	{
1881	Log(("usbMsd: Failed sending SCSI request to driver: %Rrc\n", rc));
1882	return usbMsdCompleteStall(pThis, NULL, pUrb, "SCSI Submit #3");
1883	}
1884
1885	/* fall thru */
1886	}
1887
1888	/*
1889	* The SCSI command is still pending, queue the URB awaiting its
1890	* completion.
1891	*/
1892	case USBMSDREQSTATE_EXECUTING:
1893	usbMsdQueueAddTail(&pThis->ToHostQueue, pUrb);
1894	LogFlow(("usbMsdHandleBulkDevToHost: Added %p:%s to the to-host queue\n", pUrb, pUrb->pszDesc));
1895	return VINF_SUCCESS;
1896
1897	/*
1898	* Bad states, stall.
1899	*/
1900	case USBMSDREQSTATE_READY:
1901	Log(("usbMsdHandleBulkDevToHost: enmState=READ(%d) (cbData=%#x)\n", pReq->enmState, pUrb->cbData));
1902	return usbMsdCompleteStall(pThis, NULL, pUrb, "Bad state D2H: READY");
1903
1904	default:
1905	Log(("usbMsdHandleBulkDevToHost: enmState=%d cbData=%#x\n", pReq->enmState, pUrb->cbData));
1906	return usbMsdCompleteStall(pThis, NULL, pUrb, "Really bad state (D2H)!");
1907	}
1908	}
1909
1910
1911	/**
1912	* Handles request send to the default control pipe.
1913	*/
1914	static int usbMsdHandleDefaultPipe(PUSBMSD pThis, PUSBMSDEP pEp, PVUSBURB pUrb)
1915	{
1916	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
1917	AssertReturn(pUrb->cbData >= sizeof(*pSetup), VERR_VUSB_FAILED_TO_QUEUE_URB);
1918
1919	if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_STANDARD)
1920	{
1921	switch (pSetup->bRequest)
1922	{
1923	case VUSB_REQ_GET_DESCRIPTOR:
1924	{
1925	if (pSetup->bmRequestType != (VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST))
1926	{
1927	Log(("usbMsd: Bad GET_DESCRIPTOR req: bmRequestType=%#x\n", pSetup->bmRequestType));
1928	return usbMsdCompleteStall(pThis, pEp, pUrb, "Bad GET_DESCRIPTOR");
1929	}
1930
1931	switch (pSetup->wValue >> 8)
1932	{
1933	uint32_t cbCopy;
1934
1935	case VUSB_DT_STRING:
1936	Log(("usbMsd: GET_DESCRIPTOR DT_STRING wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1937	break;
1938	case VUSB_DT_DEVICE_QUALIFIER:
1939	Log(("usbMsd: GET_DESCRIPTOR DT_DEVICE_QUALIFIER wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1940	/* Returned data is written after the setup message. */
1941	cbCopy = pUrb->cbData - sizeof(*pSetup);
1942	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbMsdDeviceQualifier));
1943	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbMsdDeviceQualifier, cbCopy);
1944	return usbMsdCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
1945	case VUSB_DT_BOS:
1946	Log(("usbMsd: GET_DESCRIPTOR DT_BOS wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1947	/* Returned data is written after the setup message. */
1948	cbCopy = pUrb->cbData - sizeof(*pSetup);
1949	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbMsdBOS));
1950	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbMsdBOS, cbCopy);
1951	return usbMsdCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
1952	default:
1953	Log(("usbMsd: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1954	break;
1955	}
1956	break;
1957	}
1958
1959	case VUSB_REQ_CLEAR_FEATURE:
1960	break;
1961	}
1962
1963	/** @todo implement this. */
1964	Log(("usbMsd: Implement standard request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1965	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1966
1967	usbMsdCompleteStall(pThis, pEp, pUrb, "TODO: standard request stuff");
1968	}
1969	/* 3.1 Bulk-Only Mass Storage Reset */
1970	else if ( pSetup->bmRequestType == (VUSB_REQ_CLASS \| VUSB_TO_INTERFACE)
1971	&& pSetup->bRequest == 0xff
1972	&& !pSetup->wValue
1973	&& !pSetup->wLength
1974	&& pSetup->wIndex == 0)
1975	{
1976	Log(("usbMsdHandleDefaultPipe: Bulk-Only Mass Storage Reset\n"));
1977	return usbMsdResetWorker(pThis, pUrb, false /fSetConfig/);
1978	}
1979	/* 3.2 Get Max LUN, may stall if we like (but we don't). */
1980	else if ( pSetup->bmRequestType == (VUSB_REQ_CLASS \| VUSB_TO_INTERFACE \| VUSB_DIR_TO_HOST)
1981	&& pSetup->bRequest == 0xfe
1982	&& !pSetup->wValue
1983	&& pSetup->wLength == 1
1984	&& pSetup->wIndex == 0)
1985	{
1986	(uint8_t )(pSetup + 1) = 0; /* max lun is 0 */
1987	usbMsdCompleteOk(pThis, pUrb, 1);
1988	}
1989	else
1990	{
1991	Log(("usbMsd: Unknown control msg: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1992	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1993	return usbMsdCompleteStall(pThis, pEp, pUrb, "Unknown control msg");
1994	}
1995
1996	return VINF_SUCCESS;
1997	}
1998
1999
2000	/**
2001	* @interface_method_impl{PDMUSBREG,pfnQueue}
2002	*/
2003	static DECLCALLBACK(int) usbMsdQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
2004	{
2005	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2006	LogFlow(("usbMsdQueue/#%u: pUrb=%p:%s EndPt=%#x\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc, pUrb->EndPt));
2007	RTCritSectEnter(&pThis->CritSect);
2008
2009	/*
2010	* Parse on a per end-point basis.
2011	*/
2012	int rc;
2013	switch (pUrb->EndPt)
2014	{
2015	case 0:
2016	rc = usbMsdHandleDefaultPipe(pThis, &pThis->aEps[0], pUrb);
2017	break;
2018
2019	case 0x81:
2020	AssertFailed();
2021	case 0x01:
2022	rc = usbMsdHandleBulkDevToHost(pThis, &pThis->aEps[1], pUrb);
2023	break;
2024
2025	case 0x02:
2026	rc = usbMsdHandleBulkHostToDev(pThis, &pThis->aEps[2], pUrb);
2027	break;
2028
2029	default:
2030	AssertMsgFailed(("EndPt=%d\n", pUrb->EndPt));
2031	rc = VERR_VUSB_FAILED_TO_QUEUE_URB;
2032	break;
2033	}
2034
2035	RTCritSectLeave(&pThis->CritSect);
2036	return rc;
2037	}
2038
2039
2040	/**
2041	* @interface_method_impl{PDMUSBREG,pfnUsbClearHaltedEndpoint}
2042	*/
2043	static DECLCALLBACK(int) usbMsdUsbClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint)
2044	{
2045	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2046	LogFlow(("usbMsdUsbClearHaltedEndpoint/#%u: uEndpoint=%#x\n", pUsbIns->iInstance, uEndpoint));
2047
2048	if ((uEndpoint & ~0x80) < RT_ELEMENTS(pThis->aEps))
2049	{
2050	RTCritSectEnter(&pThis->CritSect);
2051	pThis->aEps[(uEndpoint & ~0x80)].fHalted = false;
2052	RTCritSectLeave(&pThis->CritSect);
2053	}
2054
2055	return VINF_SUCCESS;
2056	}
2057
2058
2059	/**
2060	* @interface_method_impl{PDMUSBREG,pfnUsbSetInterface}
2061	*/
2062	static DECLCALLBACK(int) usbMsdUsbSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting)
2063	{
2064	RT_NOREF(pUsbIns, bInterfaceNumber, bAlternateSetting);
2065	LogFlow(("usbMsdUsbSetInterface/#%u: bInterfaceNumber=%u bAlternateSetting=%u\n", pUsbIns->iInstance, bInterfaceNumber, bAlternateSetting));
2066	Assert(bAlternateSetting == 0);
2067	return VINF_SUCCESS;
2068	}
2069
2070
2071	/**
2072	* @interface_method_impl{PDMUSBREG,pfnUsbSetConfiguration}
2073	*/
2074	static DECLCALLBACK(int) usbMsdUsbSetConfiguration(PPDMUSBINS pUsbIns, uint8_t bConfigurationValue,
2075	const void pvOldCfgDesc, const void pvOldIfState, const void *pvNewCfgDesc)
2076	{
2077	RT_NOREF(pvOldCfgDesc, pvOldIfState, pvNewCfgDesc);
2078	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2079	LogFlow(("usbMsdUsbSetConfiguration/#%u: bConfigurationValue=%u\n", pUsbIns->iInstance, bConfigurationValue));
2080	Assert(bConfigurationValue == 1);
2081	RTCritSectEnter(&pThis->CritSect);
2082
2083	/*
2084	* If the same config is applied more than once, it's a kind of reset.
2085	*/
2086	if (pThis->bConfigurationValue == bConfigurationValue)
2087	usbMsdResetWorker(pThis, NULL, true /fSetConfig/); /** @todo figure out the exact difference */
2088	pThis->bConfigurationValue = bConfigurationValue;
2089
2090	RTCritSectLeave(&pThis->CritSect);
2091	return VINF_SUCCESS;
2092	}
2093
2094
2095	/**
2096	* @interface_method_impl{PDMUSBREG,pfnUsbGetDescriptorCache}
2097	*/
2098	static DECLCALLBACK(PCPDMUSBDESCCACHE) usbMsdUsbGetDescriptorCache(PPDMUSBINS pUsbIns)
2099	{
2100	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2101	LogFlow(("usbMsdUsbGetDescriptorCache/#%u:\n", pUsbIns->iInstance));
2102	if (pThis->pUsbIns->enmSpeed == VUSB_SPEED_SUPER)
2103	return pThis->fIsCdrom ? &g_UsbCdDescCacheSS : &g_UsbMsdDescCacheSS;
2104	else if (pThis->pUsbIns->enmSpeed == VUSB_SPEED_HIGH)
2105	return pThis->fIsCdrom ? &g_UsbCdDescCacheHS : &g_UsbMsdDescCacheHS;
2106	else
2107	return pThis->fIsCdrom ? &g_UsbCdDescCacheFS : &g_UsbMsdDescCacheFS;
2108	}
2109
2110
2111	/**
2112	* @interface_method_impl{PDMUSBREG,pfnUsbReset}
2113	*/
2114	static DECLCALLBACK(int) usbMsdUsbReset(PPDMUSBINS pUsbIns, bool fResetOnLinux)
2115	{
2116	RT_NOREF(fResetOnLinux);
2117	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2118	LogFlow(("usbMsdUsbReset/#%u:\n", pUsbIns->iInstance));
2119	RTCritSectEnter(&pThis->CritSect);
2120
2121	int rc = usbMsdResetWorker(pThis, NULL, false /fSetConfig/);
2122
2123	RTCritSectLeave(&pThis->CritSect);
2124	return rc;
2125	}
2126
2127
2128	/**
2129	* @interface_method_impl{PDMUSBREG,pfnVMSuspend}
2130	*/
2131	static DECLCALLBACK(void) usbMsdVMSuspend(PPDMUSBINS pUsbIns)
2132	{
2133	LogFlow(("usbMsdVMSuspend/#%u:\n", pUsbIns->iInstance));
2134	usbMsdSuspendOrPowerOff(pUsbIns);
2135	}
2136
2137
2138	/**
2139	* @interface_method_impl{PDMUSBREG,pfnVMSuspend}
2140	*/
2141	static DECLCALLBACK(void) usbMsdVMPowerOff(PPDMUSBINS pUsbIns)
2142	{
2143	LogFlow(("usbMsdVMPowerOff/#%u:\n", pUsbIns->iInstance));
2144	usbMsdSuspendOrPowerOff(pUsbIns);
2145	}
2146
2147
2148	/**
2149	* @interface_method_impl{PDMUSBREG,pfnDriverAttach}
2150	*/
2151	static DECLCALLBACK(int) usbMsdDriverAttach(PPDMUSBINS pUsbIns, unsigned iLUN, uint32_t fFlags)
2152	{
2153	RT_NOREF(fFlags);
2154	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2155
2156	LogFlow(("usbMsdDetach/#%u:\n", pUsbIns->iInstance));
2157
2158	AssertMsg(iLUN == 0, ("UsbMsd: No other LUN than 0 is supported\n"));
2159	AssertMsg(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2160	("UsbMsd: Device does not support hotplugging\n"));
2161
2162	/* the usual paranoia */
2163	AssertRelease(!pThis->Lun0.pIBase);
2164	AssertRelease(!pThis->Lun0.pIScsiConnector);
2165
2166	/*
2167	* Try attach the block device and get the interfaces,
2168	* required as well as optional.
2169	*/
2170	int rc = PDMUsbHlpDriverAttach(pUsbIns, iLUN, &pThis->Lun0.IBase, &pThis->Lun0.pIBase, NULL);
2171	if (RT_SUCCESS(rc))
2172	{
2173	/* Get SCSI connector interface. */
2174	pThis->Lun0.pIScsiConnector = PDMIBASE_QUERY_INTERFACE(pThis->Lun0.pIBase, PDMISCSICONNECTOR);
2175	AssertMsgReturn(pThis->Lun0.pIScsiConnector, ("Missing SCSI interface below\n"), VERR_PDM_MISSING_INTERFACE);
2176	}
2177	else
2178	AssertMsgFailed(("Failed to attach LUN#%d. rc=%Rrc\n", iLUN, rc));
2179
2180	if (RT_FAILURE(rc))
2181	{
2182	pThis->Lun0.pIBase = NULL;
2183	pThis->Lun0.pIScsiConnector = NULL;
2184	}
2185
2186	/*
2187	* Find out what kind of device we are.
2188	*/
2189	PDMSCSILUNTYPE enmLunType;
2190	pThis->fIsCdrom = false;
2191	rc = pThis->Lun0.pIScsiConnector->pfnQueryLUNType(pThis->Lun0.pIScsiConnector, 0 /iLun/, &enmLunType);
2192	if (RT_SUCCESS(rc))
2193	{
2194	/* Anything else will be reported as a hard disk. */
2195	if (enmLunType == PDMSCSILUNTYPE_MMC)
2196	pThis->fIsCdrom = true;
2197	}
2198
2199	return rc;
2200	}
2201
2202
2203	/**
2204	* @interface_method_impl{PDMUSBREG,pfnDriverDetach}
2205	*/
2206	static DECLCALLBACK(void) usbMsdDriverDetach(PPDMUSBINS pUsbIns, unsigned iLUN, uint32_t fFlags)
2207	{
2208	RT_NOREF(iLUN, fFlags);
2209	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2210
2211	LogFlow(("usbMsdDetach/#%u:\n", pUsbIns->iInstance));
2212
2213	AssertMsg(iLUN == 0, ("UsbMsd: No other LUN than 0 is supported\n"));
2214	AssertMsg(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
2215	("UsbMsd: Device does not support hotplugging\n"));
2216
2217	/*
2218	* Zero some important members.
2219	*/
2220	pThis->Lun0.pIBase = NULL;
2221	pThis->Lun0.pIScsiConnector = NULL;
2222	}
2223
2224
2225	/**
2226	* @callback_method_impl{FNPDMDEVASYNCNOTIFY,
2227	* Callback employed by usbMsdVMReset.}
2228	*/
2229	static DECLCALLBACK(bool) usbMsdIsAsyncResetDone(PPDMUSBINS pUsbIns)
2230	{
2231	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2232
2233	if (!usbMsdAllAsyncIOIsFinished(pUsbIns))
2234	return false;
2235	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2236
2237	int rc = usbMsdResetWorker(pThis, NULL, false /fSetConfig/);
2238	AssertRC(rc);
2239	return true;
2240	}
2241
2242	/**
2243	* @interface_method_impl{PDMDEVREG,pfnReset}
2244	*/
2245	static DECLCALLBACK(void) usbMsdVMReset(PPDMUSBINS pUsbIns)
2246	{
2247	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2248
2249	ASMAtomicWriteBool(&pThis->fSignalIdle, true);
2250	if (!usbMsdAllAsyncIOIsFinished(pUsbIns))
2251	PDMUsbHlpSetAsyncNotification(pUsbIns, usbMsdIsAsyncResetDone);
2252	else
2253	{
2254	ASMAtomicWriteBool(&pThis->fSignalIdle, false);
2255	int rc = usbMsdResetWorker(pThis, NULL, false /fSetConfig/);
2256	AssertRC(rc);
2257	}
2258	}
2259
2260
2261	/**
2262	* @interface_method_impl{PDMUSBREG,pfnDestruct}
2263	*/
2264	static DECLCALLBACK(void) usbMsdDestruct(PPDMUSBINS pUsbIns)
2265	{
2266	PDMUSB_CHECK_VERSIONS_RETURN_VOID(pUsbIns);
2267	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2268	LogFlow(("usbMsdDestruct/#%u:\n", pUsbIns->iInstance));
2269
2270	if (RTCritSectIsInitialized(&pThis->CritSect))
2271	{
2272	RTCritSectEnter(&pThis->CritSect);
2273	RTCritSectLeave(&pThis->CritSect);
2274	RTCritSectDelete(&pThis->CritSect);
2275	}
2276
2277	if (pThis->pReq)
2278	{
2279	usbMsdReqFree(pThis->pReq);
2280	pThis->pReq = NULL;
2281	}
2282
2283	if (pThis->hEvtDoneQueue != NIL_RTSEMEVENT)
2284	{
2285	RTSemEventDestroy(pThis->hEvtDoneQueue);
2286	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
2287	}
2288
2289	if (pThis->hEvtReset != NIL_RTSEMEVENTMULTI)
2290	{
2291	RTSemEventMultiDestroy(pThis->hEvtReset);
2292	pThis->hEvtReset = NIL_RTSEMEVENTMULTI;
2293	}
2294	}
2295
2296
2297	/**
2298	* @interface_method_impl{PDMUSBREG,pfnConstruct}
2299	*/
2300	static DECLCALLBACK(int) usbMsdConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal)
2301	{
2302	RT_NOREF(pCfgGlobal);
2303	PDMUSB_CHECK_VERSIONS_RETURN(pUsbIns);
2304	PUSBMSD pThis = PDMINS_2_DATA(pUsbIns, PUSBMSD);
2305	Log(("usbMsdConstruct/#%u:\n", iInstance));
2306
2307	/*
2308	* Perform the basic structure initialization first so the destructor
2309	* will not misbehave.
2310	*/
2311	pThis->pUsbIns = pUsbIns;
2312	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
2313	pThis->hEvtReset = NIL_RTSEMEVENTMULTI;
2314	pThis->Lun0.IBase.pfnQueryInterface = usbMsdLun0QueryInterface;
2315	pThis->Lun0.IScsiPort.pfnSCSIRequestCompleted = usbMsdLun0ScsiRequestCompleted;
2316	pThis->Lun0.IScsiPort.pfnQueryDeviceLocation = usbMsdLun0QueryDeviceLocation;
2317	usbMsdQueueInit(&pThis->ToHostQueue);
2318	usbMsdQueueInit(&pThis->DoneQueue);
2319
2320	int rc = RTCritSectInit(&pThis->CritSect);
2321	AssertRCReturn(rc, rc);
2322
2323	rc = RTSemEventCreate(&pThis->hEvtDoneQueue);
2324	AssertRCReturn(rc, rc);
2325
2326	rc = RTSemEventMultiCreate(&pThis->hEvtReset);
2327	AssertRCReturn(rc, rc);
2328
2329	/*
2330	* Validate and read the configuration.
2331	*/
2332	rc = CFGMR3ValidateConfig(pCfg, "/", "", "", "UsbMsd", iInstance);
2333	if (RT_FAILURE(rc))
2334	return rc;
2335
2336	/*
2337	* Attach the SCSI driver.
2338	*/
2339	rc = PDMUsbHlpDriverAttach(pUsbIns, 0 /iLun/, &pThis->Lun0.IBase, &pThis->Lun0.pIBase, "SCSI Port");
2340	if (RT_FAILURE(rc))
2341	return PDMUsbHlpVMSetError(pUsbIns, rc, RT_SRC_POS, N_("MSD failed to attach SCSI driver"));
2342	pThis->Lun0.pIScsiConnector = PDMIBASE_QUERY_INTERFACE(pThis->Lun0.pIBase, PDMISCSICONNECTOR);
2343	if (!pThis->Lun0.pIScsiConnector)
2344	return PDMUsbHlpVMSetError(pUsbIns, VERR_PDM_MISSING_INTERFACE_BELOW, RT_SRC_POS,
2345	N_("MSD failed to query the PDMISCSICONNECTOR from the driver below it"));
2346
2347	/*
2348	* Find out what kind of device we are.
2349	*/
2350	PDMSCSILUNTYPE enmLunType;
2351	pThis->fIsCdrom = false;
2352	rc = pThis->Lun0.pIScsiConnector->pfnQueryLUNType(pThis->Lun0.pIScsiConnector, 0 /iLun/, &enmLunType);
2353	if (RT_SUCCESS(rc))
2354	{
2355	/* Anything else will be reported as a hard disk. */
2356	if (enmLunType == PDMSCSILUNTYPE_MMC)
2357	pThis->fIsCdrom = true;
2358	}
2359
2360	/*
2361	* Register the saved state data unit.
2362	*/
2363	rc = PDMUsbHlpSSMRegister(pUsbIns, USB_MSD_SAVED_STATE_VERSION, sizeof(*pThis),
2364	NULL, usbMsdLiveExec, NULL,
2365	usbMsdSavePrep, usbMsdSaveExec, NULL,
2366	usbMsdLoadPrep, usbMsdLoadExec, NULL);
2367	if (RT_FAILURE(rc))
2368	return PDMUsbHlpVMSetError(pUsbIns, rc, RT_SRC_POS,
2369	N_("MSD failed to register SSM save state handlers"));
2370
2371	return VINF_SUCCESS;
2372	}
2373
2374
2375	/**
2376	* The USB Mass Storage Device (MSD) registration record.
2377	*/
2378	const PDMUSBREG g_UsbMsd =
2379	{
2380	/* u32Version */
2381	PDM_USBREG_VERSION,
2382	/* szName */
2383	"Msd",
2384	/* pszDescription */
2385	"USB Mass Storage Device, one LUN.",
2386	/* fFlags */
2387	PDM_USBREG_HIGHSPEED_CAPABLE \| PDM_USBREG_SUPERSPEED_CAPABLE
2388	\| PDM_USBREG_SAVED_STATE_SUPPORTED,
2389	/* cMaxInstances */
2390	~0U,
2391	/* cbInstance */
2392	sizeof(USBMSD),
2393	/* pfnConstruct */
2394	usbMsdConstruct,
2395	/* pfnDestruct */
2396	usbMsdDestruct,
2397	/* pfnVMInitComplete */
2398	NULL,
2399	/* pfnVMPowerOn */
2400	NULL,
2401	/* pfnVMReset */
2402	usbMsdVMReset,
2403	/* pfnVMSuspend */
2404	usbMsdVMSuspend,
2405	/* pfnVMResume */
2406	NULL,
2407	/* pfnVMPowerOff */
2408	usbMsdVMPowerOff,
2409	/* pfnHotPlugged */
2410	NULL,
2411	/* pfnHotUnplugged */
2412	NULL,
2413	/* pfnDriverAttach */
2414	usbMsdDriverAttach,
2415	/* pfnDriverDetach */
2416	usbMsdDriverDetach,
2417	/* pfnQueryInterface */
2418	NULL,
2419	/* pfnUsbReset */
2420	usbMsdUsbReset,
2421	/* pfnUsbGetCachedDescriptors */
2422	usbMsdUsbGetDescriptorCache,
2423	/* pfnUsbSetConfiguration */
2424	usbMsdUsbSetConfiguration,
2425	/* pfnUsbSetInterface */
2426	usbMsdUsbSetInterface,
2427	/* pfnUsbClearHaltedEndpoint */
2428	usbMsdUsbClearHaltedEndpoint,
2429	/* pfnUrbNew */
2430	NULL/usbMsdUrbNew/,
2431	/* pfnQueue */
2432	usbMsdQueue,
2433	/* pfnUrbCancel */
2434	usbMsdUrbCancel,
2435	/* pfnUrbReap */
2436	usbMsdUrbReap,
2437	/* pfnWakeup */
2438	usbMsdWakeup,
2439	/* u32TheEnd */
2440	PDM_USBREG_VERSION
2441	};
2442

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source: vbox/trunk/src/VBox/Devices/Storage/UsbMsd.cpp@ 63942

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