VSCSILunMmc.cpp@ 83062

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1	/* $Id: VSCSILunMmc.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* Virtual SCSI driver: MMC LUN implementation (CD/DVD-ROM)
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 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_VSCSI
23	#include <VBox/log.h>
24	#include <VBox/err.h>
25	#include <VBox/types.h>
26	#include <VBox/vscsi.h>
27	#include <iprt/asm.h>
28	#include <iprt/assert.h>
29	#include <iprt/mem.h>
30	#include <iprt/string.h>
31
32	#include "VSCSIInternal.h"
33
34
35	/*********************************************************************************************************************************
36	* Structures and Typedefs *
37	*********************************************************************************************************************************/
38
39	/**
40	* Different event status types.
41	*/
42	typedef enum MMCEVENTSTATUSTYPE
43	{
44	/** Medium event status not changed. */
45	MMCEVENTSTATUSTYPE_UNCHANGED = 0,
46	/** New medium inserted. */
47	MMCEVENTSTATUSTYPE_MEDIA_NEW,
48	/** Medium removed. */
49	MMCEVENTSTATUSTYPE_MEDIA_REMOVED,
50	/** Medium was removed + new medium was inserted. */
51	MMCEVENTSTATUSTYPE_MEDIA_CHANGED,
52	/** Medium eject requested (eject button pressed). */
53	MMCEVENTSTATUSTYPE_MEDIA_EJECT_REQUESTED,
54	/** 32bit hack. */
55	MMCEVENTSTATUSTYPE_32BIT_HACK = 0x7fffffff
56	} MMCEVENTSTATUSTYPE;
57
58	/** @name Media track types.
59	* @{ */
60	/** Unknown media type. */
61	#define MMC_MEDIA_TYPE_UNKNOWN 0
62	/** Door closed, no media. */
63	#define MMC_MEDIA_TYPE_NO_DISC 0x70
64	/** @} */
65
66
67	/**
68	* MMC LUN instance
69	*/
70	typedef struct VSCSILUNMMC
71	{
72	/** Core LUN structure */
73	VSCSILUNINT Core;
74	/** Size of the virtual disk. */
75	uint64_t cSectors;
76	/** Medium locked indicator. */
77	bool fLocked;
78	/** Media event status. */
79	volatile MMCEVENTSTATUSTYPE MediaEventStatus;
80	/** Media track type. */
81	volatile uint32_t u32MediaTrackType;
82	} VSCSILUNMMC, *PVSCSILUNMMC;
83
84
85	/**
86	* Callback to fill a feature for a GET CONFIGURATION request.
87	*
88	* @returns Number of bytes used for this feature in the buffer.
89	* @param pbBuf The buffer to use.
90	* @param cbBuf Size of the buffer.
91	*/
92	typedef DECLCALLBACK(size_t) FNVSCSILUNMMCFILLFEATURE(uint8_t *pbBuf, size_t cbBuf);
93	/** Pointer to a fill feature callback. */
94	typedef FNVSCSILUNMMCFILLFEATURE *PFNVSCSILUNMMCFILLFEATURE;
95
96	/**
97	* VSCSI MMC feature descriptor.
98	*/
99	typedef struct VSCSILUNMMCFEATURE
100	{
101	/** The feature number. */
102	uint16_t u16Feat;
103	/** The callback to call for this feature. */
104	PFNVSCSILUNMMCFILLFEATURE pfnFeatureFill;
105	} VSCSILUNMMCFEATURE;
106	/** Pointer to a VSCSI MMC feature descriptor. */
107	typedef VSCSILUNMMCFEATURE *PVSCSILUNMMCFEATURE;
108	/** Pointer to a const VSCSI MMC feature descriptor. */
109	typedef const VSCSILUNMMCFEATURE *PCVSCSILUNMMCFEATURE;
110
111
112
113	/*********************************************************************************************************************************
114	* Internal Functions *
115	*********************************************************************************************************************************/
116	RT_C_DECLS_BEGIN
117	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureListProfiles(uint8_t *pbBuf, size_t cbBuf);
118	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureCore(uint8_t *pbBuf, size_t cbBuf);
119	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureMorphing(uint8_t *pbBuf, size_t cbBuf);
120	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureRemovableMedium(uint8_t *pbBuf, size_t cbBuf);
121	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureRandomReadable(uint8_t *pbBuf, size_t cbBuf);
122	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureCDRead(uint8_t *pbBuf, size_t cbBuf);
123	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeaturePowerManagement(uint8_t *pbBuf, size_t cbBuf);
124	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureTimeout(uint8_t *pbBuf, size_t cbBuf);
125	RT_C_DECLS_END
126
127	/**
128	* List of supported MMC features.
129	*/
130	static const VSCSILUNMMCFEATURE g_aVScsiMmcFeatures[] =
131	{
132	{ 0x0000, vscsiLunMmcGetConfigurationFillFeatureListProfiles},
133	{ 0x0001, vscsiLunMmcGetConfigurationFillFeatureCore},
134	{ 0x0002, vscsiLunMmcGetConfigurationFillFeatureMorphing},
135	{ 0x0003, vscsiLunMmcGetConfigurationFillFeatureRemovableMedium},
136	{ 0x0010, vscsiLunMmcGetConfigurationFillFeatureRandomReadable},
137	{ 0x001e, vscsiLunMmcGetConfigurationFillFeatureCDRead},
138	{ 0x0100, vscsiLunMmcGetConfigurationFillFeaturePowerManagement},
139	{ 0x0105, vscsiLunMmcGetConfigurationFillFeatureTimeout}
140	};
141
142	/* Fabricate normal TOC information. */
143	static int mmcReadTOCNormal(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq, uint16_t cbMaxTransfer, bool fMSF)
144	{
145	uint8_t aReply[2+998 + 32]; RT_ZERO(aReply); / Maximum possible reply plus some safety. */
146	uint8_t *pbBuf = aReply;
147	uint8_t *q;
148	uint8_t iStartTrack;
149	uint32_t cbSize;
150	uint32_t cTracks = vscsiLunMediumGetRegionCount(pVScsiLun);
151
152	iStartTrack = pVScsiReq->pbCDB[6];
153	if (iStartTrack == 0)
154	iStartTrack = 1;
155	if (iStartTrack > cTracks && iStartTrack != 0xaa)
156	return vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
157
158	q = pbBuf + 2;
159	q++ = iStartTrack; / first track number */
160	q++ = cTracks; / last track number */
161	for (uint32_t iTrack = iStartTrack; iTrack <= cTracks; iTrack++)
162	{
163	uint64_t uLbaStart = 0;
164	VDREGIONDATAFORM enmDataForm = VDREGIONDATAFORM_MODE1_2048;
165
166	int rc = vscsiLunMediumQueryRegionProperties(pVScsiLun, iTrack - 1, &uLbaStart,
167	NULL, NULL, &enmDataForm);
168	if (rc == VERR_NOT_FOUND \|\| rc == VERR_MEDIA_NOT_PRESENT)
169	return vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_NOT_READY,
170	SCSI_ASC_MEDIUM_NOT_PRESENT, 0x00);
171	else
172	AssertRC(rc);
173
174	q++ = 0; / reserved */
175
176	if (enmDataForm == VDREGIONDATAFORM_CDDA)
177	q++ = 0x10; / ADR, control */
178	else
179	q++ = 0x14; / ADR, control */
180
181	q++ = (uint8_t)iTrack; / track number */
182	q++ = 0; / reserved */
183	if (fMSF)
184	{
185	q++ = 0; / reserved */
186	scsiLBA2MSF(q, (uint32_t)uLbaStart);
187	q += 3;
188	}
189	else
190	{
191	/* sector 0 */
192	scsiH2BE_U32(q, (uint32_t)uLbaStart);
193	q += 4;
194	}
195	}
196	/* lead out track */
197	q++ = 0; / reserved */
198	q++ = 0x14; / ADR, control */
199	q++ = 0xaa; / track number */
200	q++ = 0; / reserved */
201
202	/* Query start and length of last track to get the start of the lead out track. */
203	uint64_t uLbaStart = 0;
204	uint64_t cBlocks = 0;
205
206	int rc = vscsiLunMediumQueryRegionProperties(pVScsiLun, cTracks - 1, &uLbaStart,
207	&cBlocks, NULL, NULL);
208	if (rc == VERR_NOT_FOUND \|\| rc == VERR_MEDIA_NOT_PRESENT)
209	return vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_NOT_READY,
210	SCSI_ASC_MEDIUM_NOT_PRESENT, 0x00);
211	else
212	AssertRC(rc);
213
214	uLbaStart += cBlocks;
215	if (fMSF)
216	{
217	q++ = 0; / reserved */
218	scsiLBA2MSF(q, (uint32_t)uLbaStart);
219	q += 3;
220	}
221	else
222	{
223	scsiH2BE_U32(q, (uint32_t)uLbaStart);
224	q += 4;
225	}
226	cbSize = q - pbBuf;
227	Assert(cbSize <= sizeof(aReply));
228	scsiH2BE_U16(pbBuf, cbSize - 2);
229	if (cbSize < cbMaxTransfer)
230	cbMaxTransfer = cbSize;
231
232	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, cbMaxTransfer);
233	return vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
234	}
235
236	/* Fabricate session information. */
237	static int mmcReadTOCMulti(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq, uint16_t cbMaxTransfer, bool fMSF)
238	{
239	RT_NOREF1(cbMaxTransfer);
240	uint8_t aReply[32];
241	uint8_t *pbBuf = aReply;
242
243	/* multi session: only a single session defined */
244	memset(pbBuf, 0, 12);
245	pbBuf[1] = 0x0a;
246	pbBuf[2] = 0x01; /* first complete session number */
247	pbBuf[3] = 0x01; /* last complete session number */
248
249	VDREGIONDATAFORM enmDataForm = VDREGIONDATAFORM_MODE1_2048;
250	int rc = vscsiLunMediumQueryRegionProperties(pVScsiLun, 0, NULL,
251	NULL, NULL, &enmDataForm);
252	if (rc == VERR_NOT_FOUND \|\| rc == VERR_MEDIA_NOT_PRESENT)
253	return vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_NOT_READY,
254	SCSI_ASC_MEDIUM_NOT_PRESENT, 0x00);
255	else
256	AssertRC(rc);
257
258	if (enmDataForm == VDREGIONDATAFORM_CDDA)
259	pbBuf[5] = 0x10; /* ADR, control */
260	else
261	pbBuf[5] = 0x14; /* ADR, control */
262
263	pbBuf[6] = 1; /* first track in last complete session */
264
265	if (fMSF)
266	{
267	pbBuf[8] = 0; /* reserved */
268	scsiLBA2MSF(pbBuf + 8, 0);
269	}
270	else
271	{
272	/* sector 0 */
273	scsiH2BE_U32(pbBuf + 8, 0);
274	}
275
276	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, 12);
277
278	return vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
279	}
280
281	/**
282	* Create raw TOC data information.
283	*
284	* @returns SCSI status code.
285	* @param pVScsiLun The LUN instance.
286	* @param pVScsiReq The VSCSI request.
287	* @param cbMaxTransfer The maximum transfer size.
288	* @param fMSF Flag whether to use MSF format to encode sector numbers.
289	*/
290	static int mmcReadTOCRaw(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq, uint16_t cbMaxTransfer, bool fMSF)
291	{
292	PVSCSILUNMMC pVScsiLunMmc = (PVSCSILUNMMC)pVScsiLun;
293	uint8_t aReply[50]; /* Counted a maximum of 45 bytes but better be on the safe side. */
294	uint32_t cbSize;
295	uint8_t *pbBuf = &aReply[0] + 2;
296
297	pbBuf++ = 1; / first session */
298	pbBuf++ = 1; / last session */
299
300	pbBuf++ = 1; / session number */
301	pbBuf++ = 0x14; / data track */
302	pbBuf++ = 0; / track number */
303	pbBuf++ = 0xa0; / first track in program area */
304	pbBuf++ = 0; / min */
305	pbBuf++ = 0; / sec */
306	pbBuf++ = 0; / frame */
307	*pbBuf++ = 0;
308	pbBuf++ = 1; / first track */
309	pbBuf++ = 0x00; / disk type CD-DA or CD data */
310	*pbBuf++ = 0;
311
312	pbBuf++ = 1; / session number */
313	pbBuf++ = 0x14; / data track */
314	pbBuf++ = 0; / track number */
315	pbBuf++ = 0xa1; / last track in program area */
316	pbBuf++ = 0; / min */
317	pbBuf++ = 0; / sec */
318	pbBuf++ = 0; / frame */
319	*pbBuf++ = 0;
320	pbBuf++ = 1; / last track */
321	*pbBuf++ = 0;
322	*pbBuf++ = 0;
323
324	pbBuf++ = 1; / session number */
325	pbBuf++ = 0x14; / data track */
326	pbBuf++ = 0; / track number */
327	pbBuf++ = 0xa2; / lead-out */
328	pbBuf++ = 0; / min */
329	pbBuf++ = 0; / sec */
330	pbBuf++ = 0; / frame */
331	if (fMSF)
332	{
333	pbBuf++ = 0; / reserved */
334	scsiLBA2MSF(pbBuf, pVScsiLunMmc->cSectors);
335	pbBuf += 3;
336	}
337	else
338	{
339	scsiH2BE_U32(pbBuf, pVScsiLunMmc->cSectors);
340	pbBuf += 4;
341	}
342
343	pbBuf++ = 1; / session number */
344	pbBuf++ = 0x14; / ADR, control */
345	pbBuf++ = 0; / track number */
346	pbBuf++ = 1; / point */
347	pbBuf++ = 0; / min */
348	pbBuf++ = 0; / sec */
349	pbBuf++ = 0; / frame */
350	if (fMSF)
351	{
352	pbBuf++ = 0; / reserved */
353	scsiLBA2MSF(pbBuf, 0);
354	pbBuf += 3;
355	}
356	else
357	{
358	/* sector 0 */
359	scsiH2BE_U32(pbBuf, 0);
360	pbBuf += 4;
361	}
362
363	cbSize = pbBuf - aReply;
364	scsiH2BE_U16(&aReply[0], cbSize - 2);
365
366	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(cbMaxTransfer, cbSize));
367	return vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
368	}
369
370	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureListProfiles(uint8_t *pbBuf, size_t cbBuf)
371	{
372	if (cbBuf < 3*4)
373	return 0;
374
375	scsiH2BE_U16(pbBuf, 0x0); /* feature 0: list of profiles supported */
376	pbBuf[2] = (0 << 2) \| (1 << 1) \| (1 << 0); /* version 0, persistent, current */
377	pbBuf[3] = 8; /* additional bytes for profiles */
378	/* The MMC-3 spec says that DVD-ROM read capability should be reported
379	* before CD-ROM read capability. */
380	scsiH2BE_U16(pbBuf + 4, 0x10); /* profile: read-only DVD */
381	pbBuf[6] = (0 << 0); /* NOT current profile */
382	scsiH2BE_U16(pbBuf + 8, 0x08); /* profile: read only CD */
383	pbBuf[10] = (1 << 0); /* current profile */
384
385	return 34; / Header + 2 profiles entries */
386	}
387
388	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureCore(uint8_t *pbBuf, size_t cbBuf)
389	{
390	if (cbBuf < 12)
391	return 0;
392
393	scsiH2BE_U16(pbBuf, 0x1); /* feature 0001h: Core Feature */
394	pbBuf[2] = (0x2 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
395	pbBuf[3] = 8; /* Additional length */
396	scsiH2BE_U16(pbBuf + 4, 0x00000002); /* Physical interface ATAPI. */
397	pbBuf[8] = RT_BIT(0); /* DBE */
398	/* Rest is reserved. */
399
400	return 12;
401	}
402
403	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureMorphing(uint8_t *pbBuf, size_t cbBuf)
404	{
405	if (cbBuf < 8)
406	return 0;
407
408	scsiH2BE_U16(pbBuf, 0x2); /* feature 0002h: Morphing Feature */
409	pbBuf[2] = (0x1 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
410	pbBuf[3] = 4; /* Additional length */
411	pbBuf[4] = RT_BIT(1) \| 0x0; /* OCEvent \| !ASYNC */
412	/* Rest is reserved. */
413
414	return 8;
415	}
416
417	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureRemovableMedium(uint8_t *pbBuf, size_t cbBuf)
418	{
419	if (cbBuf < 8)
420	return 0;
421
422	scsiH2BE_U16(pbBuf, 0x3); /* feature 0003h: Removable Medium Feature */
423	pbBuf[2] = (0x2 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
424	pbBuf[3] = 4; /* Additional length */
425	/* Tray type loading \| Load \| Eject \| !Pvnt Jmpr \| !DBML \| Lock */
426	pbBuf[4] = (0x2 << 5) \| RT_BIT(4) \| RT_BIT(3) \| (0x0 << 2) \| (0x0 << 1) \| RT_BIT(0);
427	/* Rest is reserved. */
428
429	return 8;
430	}
431
432	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureRandomReadable(uint8_t *pbBuf, size_t cbBuf)
433	{
434	if (cbBuf < 12)
435	return 0;
436
437	scsiH2BE_U16(pbBuf, 0x10); /* feature 0010h: Random Readable Feature */
438	pbBuf[2] = (0x0 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
439	pbBuf[3] = 8; /* Additional length */
440	scsiH2BE_U32(pbBuf + 4, 2048); /* Logical block size. */
441	scsiH2BE_U16(pbBuf + 8, 0x10); /* Blocking (0x10 for DVD, CD is not defined). */
442	pbBuf[10] = 0; /* PP not present */
443	/* Rest is reserved. */
444
445	return 12;
446	}
447
448	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureCDRead(uint8_t *pbBuf, size_t cbBuf)
449	{
450	if (cbBuf < 8)
451	return 0;
452
453	scsiH2BE_U16(pbBuf, 0x1e); /* feature 001Eh: CD Read Feature */
454	pbBuf[2] = (0x2 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
455	pbBuf[3] = 0; /* Additional length */
456	pbBuf[4] = (0x0 << 7) \| (0x0 << 1) \| 0x0; /* !DAP \| !C2-Flags \| !CD-Text. */
457	/* Rest is reserved. */
458
459	return 8;
460	}
461
462	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeaturePowerManagement(uint8_t *pbBuf, size_t cbBuf)
463	{
464	if (cbBuf < 4)
465	return 0;
466
467	scsiH2BE_U16(pbBuf, 0x100); /* feature 0100h: Power Management Feature */
468	pbBuf[2] = (0x0 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
469	pbBuf[3] = 0; /* Additional length */
470
471	return 4;
472	}
473
474	static DECLCALLBACK(size_t) vscsiLunMmcGetConfigurationFillFeatureTimeout(uint8_t *pbBuf, size_t cbBuf)
475	{
476	if (cbBuf < 8)
477	return 0;
478
479	scsiH2BE_U16(pbBuf, 0x105); /* feature 0105h: Timeout Feature */
480	pbBuf[2] = (0x0 << 2) \| RT_BIT(1) \| RT_BIT(0); /* Version \| Persistent \| Current */
481	pbBuf[3] = 4; /* Additional length */
482	pbBuf[4] = 0x0; /* !Group3 */
483
484	return 8;
485	}
486
487	/**
488	* Processes the GET CONFIGURATION SCSI request.
489	*
490	* @returns SCSI status code.
491	* @param pVScsiLunMmc The MMC LUN instance.
492	* @param pVScsiReq The VSCSI request.
493	* @param cbMaxTransfer The maximum transfer size.
494	*/
495	static int vscsiLunMmcGetConfiguration(PVSCSILUNMMC pVScsiLunMmc, PVSCSIREQINT pVScsiReq, size_t cbMaxTransfer)
496	{
497	uint8_t aReply[80];
498	uint8_t *pbBuf = &aReply[0];
499	size_t cbBuf = sizeof(aReply);
500	size_t cbCopied = 0;
501	uint16_t u16Sfn = scsiBE2H_U16(&pVScsiReq->pbCDB[2]);
502	uint8_t u8Rt = pVScsiReq->pbCDB[1] & 0x03;
503
504	/* Accept valid request types only. */
505	if (u8Rt == 3)
506	return vscsiLunReqSenseErrorSet(&pVScsiLunMmc->Core, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
507	SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
508
509	/** @todo implement switching between CD-ROM and DVD-ROM profile (the only
510	* way to differentiate them right now is based on the image size). */
511	if (pVScsiLunMmc->cSectors)
512	scsiH2BE_U16(pbBuf + 6, 0x08); /* current profile: read-only CD */
513	else
514	scsiH2BE_U16(pbBuf + 6, 0x00); /* current profile: none -> no media */
515	cbBuf -= 8;
516	pbBuf += 8;
517
518	if (u8Rt == 0x2)
519	{
520	for (uint32_t i = 0; i < RT_ELEMENTS(g_aVScsiMmcFeatures); i++)
521	{
522	if (g_aVScsiMmcFeatures[i].u16Feat == u16Sfn)
523	{
524	cbCopied = g_aVScsiMmcFeatures[i].pfnFeatureFill(pbBuf, cbBuf);
525	cbBuf -= cbCopied;
526	pbBuf += cbCopied;
527	break;
528	}
529	}
530	}
531	else
532	{
533	for (uint32_t i = 0; i < RT_ELEMENTS(g_aVScsiMmcFeatures); i++)
534	{
535	if (g_aVScsiMmcFeatures[i].u16Feat > u16Sfn)
536	{
537	cbCopied = g_aVScsiMmcFeatures[i].pfnFeatureFill(pbBuf, cbBuf);
538	cbBuf -= cbCopied;
539	pbBuf += cbCopied;
540	}
541	}
542	}
543
544	/* Set data length now. */
545	scsiH2BE_U32(&aReply[0], (uint32_t)(sizeof(aReply) - cbBuf));
546
547	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(cbMaxTransfer, sizeof(aReply) - cbBuf));
548	return vscsiLunReqSenseOkSet(&pVScsiLunMmc->Core, pVScsiReq);
549	}
550
551	/**
552	* Processes the READ DVD STRUCTURE SCSI request.
553	*
554	* @returns SCSI status code.
555	* @param pVScsiLunMmc The MMC LUN instance.
556	* @param pVScsiReq The VSCSI request.
557	* @param cbMaxTransfer The maximum transfer size.
558	*/
559	static int vscsiLunMmcReadDvdStructure(PVSCSILUNMMC pVScsiLunMmc, PVSCSIREQINT pVScsiReq, size_t cbMaxTransfer)
560	{
561	uint8_t aReply[25]; /* Counted a maximum of 20 bytes but better be on the safe side. */
562
563	RT_ZERO(aReply);
564
565	/* Act according to the indicated format. */
566	switch (pVScsiReq->pbCDB[7])
567	{
568	case 0x00:
569	case 0x01:
570	case 0x02:
571	case 0x03:
572	case 0x04:
573	case 0x05:
574	case 0x06:
575	case 0x07:
576	case 0x08:
577	case 0x09:
578	case 0x0a:
579	case 0x0b:
580	case 0x0c:
581	case 0x0d:
582	case 0x0e:
583	case 0x0f:
584	case 0x10:
585	case 0x11:
586	case 0x30:
587	case 0x31:
588	case 0xff:
589	if (pVScsiReq->pbCDB[1] == 0)
590	{
591	int uASC = SCSI_ASC_NONE;
592
593	switch (pVScsiReq->pbCDB[7])
594	{
595	case 0x0: /* Physical format information */
596	{
597	uint8_t uLayer = pVScsiReq->pbCDB[6];
598	uint64_t cTotalSectors;
599
600	if (uLayer != 0)
601	{
602	uASC = -SCSI_ASC_INV_FIELD_IN_CMD_PACKET;
603	break;
604	}
605
606	cTotalSectors = pVScsiLunMmc->cSectors;
607	cTotalSectors >>= 2;
608	if (cTotalSectors == 0)
609	{
610	uASC = -SCSI_ASC_MEDIUM_NOT_PRESENT;
611	break;
612	}
613
614	aReply[4] = 1; /* DVD-ROM, part version 1 */
615	aReply[5] = 0xf; /* 120mm disc, minimum rate unspecified */
616	aReply[6] = 1; /* one layer, read-only (per MMC-2 spec) */
617	aReply[7] = 0; /* default densities */
618
619	/* FIXME: 0x30000 per spec? */
620	scsiH2BE_U32(&aReply[8], 0); /* start sector */
621	scsiH2BE_U32(&aReply[12], cTotalSectors - 1); /* end sector */
622	scsiH2BE_U32(&aReply[16], cTotalSectors - 1); /* l0 end sector */
623
624	/* Size of buffer, not including 2 byte size field */
625	scsiH2BE_U32(&aReply[0], 2048 + 2);
626
627	/* 2k data + 4 byte header */
628	uASC = (2048 + 4);
629	break;
630	}
631	case 0x01: /* DVD copyright information */
632	aReply[4] = 0; /* no copyright data */
633	aReply[5] = 0; /* no region restrictions */
634
635	/* Size of buffer, not including 2 byte size field */
636	scsiH2BE_U16(&aReply[0], 4 + 2);
637
638	/* 4 byte header + 4 byte data */
639	uASC = (4 + 4);
640	break;
641
642	case 0x03: /* BCA information - invalid field for no BCA info */
643	uASC = -SCSI_ASC_INV_FIELD_IN_CMD_PACKET;
644	break;
645
646	case 0x04: /* DVD disc manufacturing information */
647	/* Size of buffer, not including 2 byte size field */
648	scsiH2BE_U16(&aReply[0], 2048 + 2);
649
650	/* 2k data + 4 byte header */
651	uASC = (2048 + 4);
652	break;
653	case 0xff:
654	/*
655	* This lists all the command capabilities above. Add new ones
656	* in order and update the length and buffer return values.
657	*/
658
659	aReply[4] = 0x00; /* Physical format */
660	aReply[5] = 0x40; /* Not writable, is readable */
661	scsiH2BE_U16(&aReply[6], 2048 + 4);
662
663	aReply[8] = 0x01; /* Copyright info */
664	aReply[9] = 0x40; /* Not writable, is readable */
665	scsiH2BE_U16(&aReply[10], 4 + 4);
666
667	aReply[12] = 0x03; /* BCA info */
668	aReply[13] = 0x40; /* Not writable, is readable */
669	scsiH2BE_U16(&aReply[14], 188 + 4);
670
671	aReply[16] = 0x04; /* Manufacturing info */
672	aReply[17] = 0x40; /* Not writable, is readable */
673	scsiH2BE_U16(&aReply[18], 2048 + 4);
674
675	/* Size of buffer, not including 2 byte size field */
676	scsiH2BE_U16(&aReply[0], 16 + 2);
677
678	/* data written + 4 byte header */
679	uASC = (16 + 4);
680	break;
681	default: /** @todo formats beyond DVD-ROM requires */
682	uASC = -SCSI_ASC_INV_FIELD_IN_CMD_PACKET;
683	}
684
685	if (uASC < 0)
686	return vscsiLunReqSenseErrorSet(&pVScsiLunMmc->Core, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
687	-uASC, 0x00);
688	break;
689	}
690	/** @todo BD support, fall through for now */
691	RT_FALL_THRU();
692
693	/* Generic disk structures */
694	case 0x80: /** @todo AACS volume identifier */
695	case 0x81: /** @todo AACS media serial number */
696	case 0x82: /** @todo AACS media identifier */
697	case 0x83: /** @todo AACS media key block */
698	case 0x90: /** @todo List of recognized format layers */
699	case 0xc0: /** @todo Write protection status */
700	default:
701	return vscsiLunReqSenseErrorSet(&pVScsiLunMmc->Core, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
702	SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
703	}
704
705	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(cbMaxTransfer, sizeof(aReply)));
706	return vscsiLunReqSenseOkSet(&pVScsiLunMmc->Core, pVScsiReq);
707	}
708
709	/**
710	* Processes the MODE SENSE 10 SCSI request.
711	*
712	* @returns SCSI status code.
713	* @param pVScsiLunMmc The MMC LUN instance.
714	* @param pVScsiReq The VSCSI request.
715	* @param cbMaxTransfer The maximum transfer size.
716	*/
717	static int vscsiLunMmcModeSense10(PVSCSILUNMMC pVScsiLunMmc, PVSCSIREQINT pVScsiReq, size_t cbMaxTransfer)
718	{
719	int rcReq;
720	uint8_t uPageControl = pVScsiReq->pbCDB[2] >> 6;
721	uint8_t uPageCode = pVScsiReq->pbCDB[2] & 0x3f;
722
723	switch (uPageControl)
724	{
725	case SCSI_PAGECONTROL_CURRENT:
726	switch (uPageCode)
727	{
728	case SCSI_MODEPAGE_ERROR_RECOVERY:
729	{
730	uint8_t aReply[16];
731
732	scsiH2BE_U16(&aReply[0], 16 + 6);
733	aReply[2] = (uint8_t)pVScsiLunMmc->u32MediaTrackType;
734	aReply[3] = 0;
735	aReply[4] = 0;
736	aReply[5] = 0;
737	aReply[6] = 0;
738	aReply[7] = 0;
739
740	aReply[8] = 0x01;
741	aReply[9] = 0x06;
742	aReply[10] = 0x00;
743	aReply[11] = 0x05;
744	aReply[12] = 0x00;
745	aReply[13] = 0x00;
746	aReply[14] = 0x00;
747	aReply[15] = 0x00;
748	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(cbMaxTransfer, sizeof(aReply)));
749	rcReq = vscsiLunReqSenseOkSet(&pVScsiLunMmc->Core, pVScsiReq);
750	break;
751	}
752	case SCSI_MODEPAGE_CD_STATUS:
753	{
754	uint8_t aReply[40];
755
756	scsiH2BE_U16(&aReply[0], 38);
757	aReply[2] = (uint8_t)pVScsiLunMmc->u32MediaTrackType;
758	aReply[3] = 0;
759	aReply[4] = 0;
760	aReply[5] = 0;
761	aReply[6] = 0;
762	aReply[7] = 0;
763
764	aReply[8] = 0x2a;
765	aReply[9] = 30; /* page length */
766	aReply[10] = 0x08; /* DVD-ROM read support */
767	aReply[11] = 0x00; /* no write support */
768	/* The following claims we support audio play. This is obviously false,
769	* but the Linux generic CDROM support makes many features depend on this
770	* capability. If it's not set, this causes many things to be disabled. */
771	aReply[12] = 0x71; /* multisession support, mode 2 form 1/2 support, audio play */
772	aReply[13] = 0x00; /* no subchannel reads supported */
773	aReply[14] = (1 << 0) \| (1 << 3) \| (1 << 5); /* lock supported, eject supported, tray type loading mechanism */
774	if (pVScsiLunMmc->fLocked)
775	aReply[14] \|= 1 << 1; /* report lock state */
776	aReply[15] = 0; /* no subchannel reads supported, no separate audio volume control, no changer etc. */
777	scsiH2BE_U16(&aReply[16], 5632); /* (obsolete) claim 32x speed support */
778	scsiH2BE_U16(&aReply[18], 2); /* number of audio volume levels */
779	scsiH2BE_U16(&aReply[20], 128); /* buffer size supported in Kbyte - We don't have a buffer because we write directly into guest memory.
780	Just write some dummy value. */
781	scsiH2BE_U16(&aReply[22], 5632); /* (obsolete) current read speed 32x */
782	aReply[24] = 0; /* reserved */
783	aReply[25] = 0; /* reserved for digital audio (see idx 15) */
784	scsiH2BE_U16(&aReply[26], 0); /* (obsolete) maximum write speed */
785	scsiH2BE_U16(&aReply[28], 0); /* (obsolete) current write speed */
786	scsiH2BE_U16(&aReply[30], 0); /* copy management revision supported 0=no CSS */
787	aReply[32] = 0; /* reserved */
788	aReply[33] = 0; /* reserved */
789	aReply[34] = 0; /* reserved */
790	aReply[35] = 1; /* rotation control CAV */
791	scsiH2BE_U16(&aReply[36], 0); /* current write speed */
792	scsiH2BE_U16(&aReply[38], 0); /* number of write speed performance descriptors */
793	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(cbMaxTransfer, sizeof(aReply)));
794	rcReq = vscsiLunReqSenseOkSet(&pVScsiLunMmc->Core, pVScsiReq);
795	break;
796	}
797	default:
798	rcReq = vscsiLunReqSenseErrorSet(&pVScsiLunMmc->Core, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
799	SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
800	break;
801	}
802	break;
803	case SCSI_PAGECONTROL_CHANGEABLE:
804	case SCSI_PAGECONTROL_DEFAULT:
805	rcReq = vscsiLunReqSenseErrorSet(&pVScsiLunMmc->Core, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
806	SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
807	break;
808	default:
809	case SCSI_PAGECONTROL_SAVED:
810	rcReq = vscsiLunReqSenseErrorSet(&pVScsiLunMmc->Core, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
811	SCSI_ASC_SAVING_PARAMETERS_NOT_SUPPORTED, 0x00);
812	break;
813	}
814
815	return rcReq;
816	}
817
818	/**
819	* Processes the GET EVENT STATUS NOTIFICATION SCSI request.
820	*
821	* @returns SCSI status code.
822	* @param pVScsiLunMmc The MMC LUN instance.
823	* @param pVScsiReq The VSCSI request.
824	* @param cbMaxTransfer The maximum transfer size.
825	*/
826	static int vscsiLunMmcGetEventStatusNotification(PVSCSILUNMMC pVScsiLunMmc, PVSCSIREQINT pVScsiReq,
827	size_t cbMaxTransfer)
828	{
829	uint32_t OldStatus;
830	uint32_t NewStatus;
831	uint8_t aReply[8];
832	RT_ZERO(aReply);
833
834	LogFlowFunc(("pVScsiLunMmc=%#p pVScsiReq=%#p cbMaxTransfer=%zu\n",
835	pVScsiLunMmc, pVScsiReq, cbMaxTransfer));
836
837	do
838	{
839	OldStatus = ASMAtomicReadU32((volatile uint32_t *)&pVScsiLunMmc->MediaEventStatus);
840	NewStatus = MMCEVENTSTATUSTYPE_UNCHANGED;
841
842	switch (OldStatus)
843	{
844	case MMCEVENTSTATUSTYPE_MEDIA_NEW:
845	/* mount */
846	scsiH2BE_U16(&aReply[0], 6);
847	aReply[2] = 0x04; /* media */
848	aReply[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
849	aReply[4] = 0x02; /* new medium */
850	aReply[5] = 0x02; /* medium present / door closed */
851	aReply[6] = 0x00;
852	aReply[7] = 0x00;
853	pVScsiLunMmc->Core.fReady = true;
854	break;
855
856	case MMCEVENTSTATUSTYPE_MEDIA_CHANGED:
857	case MMCEVENTSTATUSTYPE_MEDIA_REMOVED:
858	/* umount */
859	scsiH2BE_U16(&aReply[0], 6);
860	aReply[2] = 0x04; /* media */
861	aReply[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
862	aReply[4] = 0x03; /* media removal */
863	aReply[5] = 0x00; /* medium absent / door closed */
864	aReply[6] = 0x00;
865	aReply[7] = 0x00;
866	if (OldStatus == MMCEVENTSTATUSTYPE_MEDIA_CHANGED)
867	NewStatus = MMCEVENTSTATUSTYPE_MEDIA_NEW;
868	break;
869
870	case MMCEVENTSTATUSTYPE_MEDIA_EJECT_REQUESTED: /* currently unused */
871	scsiH2BE_U16(&aReply[0], 6);
872	aReply[2] = 0x04; /* media */
873	aReply[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
874	aReply[4] = 0x01; /* eject requested (eject button pressed) */
875	aReply[5] = 0x02; /* medium present / door closed */
876	aReply[6] = 0x00;
877	aReply[7] = 0x00;
878	break;
879
880	case MMCEVENTSTATUSTYPE_UNCHANGED:
881	default:
882	scsiH2BE_U16(&aReply[0], 6);
883	aReply[2] = 0x01; /* operational change request / notification */
884	aReply[3] = 0x5e; /* supported = busy\|media\|external\|power\|operational */
885	aReply[4] = 0x00;
886	aReply[5] = 0x00;
887	aReply[6] = 0x00;
888	aReply[7] = 0x00;
889	break;
890	}
891
892	LogFlowFunc(("OldStatus=%u NewStatus=%u\n", OldStatus, NewStatus));
893
894	} while (!ASMAtomicCmpXchgU32((volatile uint32_t *)&pVScsiLunMmc->MediaEventStatus, NewStatus, OldStatus));
895
896	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(cbMaxTransfer, sizeof(aReply)));
897	return vscsiLunReqSenseOkSet(&pVScsiLunMmc->Core, pVScsiReq);
898	}
899
900	/**
901	* Processes a READ TRACK INFORMATION SCSI request.
902	*
903	* @returns SCSI status code.
904	* @param pVScsiLunMmc The MMC LUN instance.
905	* @param pVScsiReq The VSCSI request.
906	* @param cbMaxTransfer The maximum transfer size.
907	*/
908	static int vscsiLunMmcReadTrackInformation(PVSCSILUNMMC pVScsiLunMmc, PVSCSIREQINT pVScsiReq,
909	size_t cbMaxTransfer)
910	{
911	int rcReq;
912	uint32_t u32LogAddr = scsiBE2H_U32(&pVScsiReq->pbCDB[2]);
913	uint8_t u8LogAddrType = pVScsiReq->pbCDB[1] & 0x03;
914
915	int rc = VINF_SUCCESS;
916	uint64_t u64LbaStart = 0;
917	uint32_t uRegion = 0;
918	uint64_t cBlocks = 0;
919	uint64_t cbBlock = 0;
920	VDREGIONDATAFORM enmDataForm = VDREGIONDATAFORM_INVALID;
921
922	switch (u8LogAddrType)
923	{
924	case 0x00:
925	rc = vscsiLunMediumQueryRegionPropertiesForLba(&pVScsiLunMmc->Core, u32LogAddr, &uRegion,
926	NULL, NULL, NULL);
927	if (RT_SUCCESS(rc))
928	rc = vscsiLunMediumQueryRegionProperties(&pVScsiLunMmc->Core, uRegion, &u64LbaStart,
929	&cBlocks, &cbBlock, &enmDataForm);
930	break;
931	case 0x01:
932	{
933	if (u32LogAddr >= 1)
934	{
935	uRegion = u32LogAddr - 1;
936	rc = vscsiLunMediumQueryRegionProperties(&pVScsiLunMmc->Core, uRegion, &u64LbaStart,
937	&cBlocks, &cbBlock, &enmDataForm);
938	}
939	else
940	rc = VERR_NOT_FOUND; /** @todo Return lead-in information. */
941	break;
942	}
943	case 0x02:
944	default:
945	rc = VERR_INVALID_PARAMETER;
946	}
947
948	if (RT_SUCCESS(rc))
949	{
950	uint8_t u8DataMode = 0xf; /* Unknown data mode. */
951	uint8_t u8TrackMode = 0;
952	uint8_t aReply[36];
953	RT_ZERO(aReply);
954
955	switch (enmDataForm)
956	{
957	case VDREGIONDATAFORM_MODE1_2048:
958	case VDREGIONDATAFORM_MODE1_2352:
959	case VDREGIONDATAFORM_MODE1_0:
960	u8DataMode = 1;
961	break;
962	case VDREGIONDATAFORM_XA_2336:
963	case VDREGIONDATAFORM_XA_2352:
964	case VDREGIONDATAFORM_XA_0:
965	case VDREGIONDATAFORM_MODE2_2336:
966	case VDREGIONDATAFORM_MODE2_2352:
967	case VDREGIONDATAFORM_MODE2_0:
968	u8DataMode = 2;
969	break;
970	default:
971	u8DataMode = 0xf;
972	}
973
974	if (enmDataForm == VDREGIONDATAFORM_CDDA)
975	u8TrackMode = 0x0;
976	else
977	u8TrackMode = 0x4;
978
979	scsiH2BE_U16(&aReply[0], 34);
980	aReply[2] = uRegion + 1; /* track number (LSB) */
981	aReply[3] = 1; /* session number (LSB) */
982	aReply[5] = (0 << 5) \| (0 << 4) \| u8TrackMode; /* not damaged, primary copy, data track */
983	aReply[6] = (0 << 7) \| (0 << 6) \| (0 << 5) \| (0 << 6) \| u8DataMode; /* not reserved track, not blank, not packet writing, not fixed packet, data mode 1 */
984	aReply[7] = (0 << 1) \| (0 << 0); /* last recorded address not valid, next recordable address not valid */
985	scsiH2BE_U32(&aReply[8], (uint32_t)u64LbaStart); /* track start address is 0 */
986	scsiH2BE_U32(&aReply[24], (uint32_t)cBlocks); /* track size */
987	aReply[32] = 0; /* track number (MSB) */
988	aReply[33] = 0; /* session number (MSB) */
989
990	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(sizeof(aReply), cbMaxTransfer));
991	rcReq = vscsiLunReqSenseOkSet(&pVScsiLunMmc->Core, pVScsiReq);
992	}
993	else
994	rcReq = vscsiLunReqSenseErrorSet(&pVScsiLunMmc->Core, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
995	SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
996
997	return rcReq;
998	}
999
1000	static DECLCALLBACK(int) vscsiLunMmcInit(PVSCSILUNINT pVScsiLun)
1001	{
1002	PVSCSILUNMMC pVScsiLunMmc = (PVSCSILUNMMC)pVScsiLun;
1003	int rc = VINF_SUCCESS;
1004
1005	ASMAtomicWriteU32((volatile uint32_t *)&pVScsiLunMmc->MediaEventStatus, MMCEVENTSTATUSTYPE_UNCHANGED);
1006	pVScsiLunMmc->u32MediaTrackType = MMC_MEDIA_TYPE_UNKNOWN;
1007	pVScsiLunMmc->cSectors = 0;
1008
1009	uint32_t cTracks = vscsiLunMediumGetRegionCount(pVScsiLun);
1010	if (cTracks)
1011	{
1012	for (uint32_t i = 0; i < cTracks; i++)
1013	{
1014	uint64_t cBlocks = 0;
1015	rc = vscsiLunMediumQueryRegionProperties(pVScsiLun, i, NULL, &cBlocks,
1016	NULL, NULL);
1017	AssertRC(rc);
1018
1019	pVScsiLunMmc->cSectors += cBlocks;
1020	}
1021
1022	pVScsiLunMmc->Core.fMediaPresent = true;
1023	pVScsiLunMmc->Core.fReady = false;
1024	}
1025	else
1026	{
1027	pVScsiLunMmc->Core.fMediaPresent = false;
1028	pVScsiLunMmc->Core.fReady = false;
1029	}
1030
1031	return rc;
1032	}
1033
1034	static DECLCALLBACK(int) vscsiLunMmcDestroy(PVSCSILUNINT pVScsiLun)
1035	{
1036	RT_NOREF1(pVScsiLun);
1037	return VINF_SUCCESS;
1038	}
1039
1040	static DECLCALLBACK(int) vscsiLunMmcReqProcess(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq)
1041	{
1042	PVSCSILUNMMC pVScsiLunMmc = (PVSCSILUNMMC)pVScsiLun;
1043	VSCSIIOREQTXDIR enmTxDir = VSCSIIOREQTXDIR_INVALID;
1044	uint64_t uLbaStart = 0;
1045	uint32_t cSectorTransfer = 0;
1046	size_t cbSector = 0;
1047	int rc = VINF_SUCCESS;
1048	int rcReq = SCSI_STATUS_OK;
1049	unsigned uCmd = pVScsiReq->pbCDB[0];
1050	PCRTSGSEG paSegs = pVScsiReq->SgBuf.paSegs;
1051	unsigned cSegs = pVScsiReq->SgBuf.cSegs;
1052
1053	LogFlowFunc(("pVScsiLun=%#p{.fReady=%RTbool, .fMediaPresent=%RTbool} pVScsiReq=%#p{.pbCdb[0]=%#x}\n",
1054	pVScsiLun, pVScsiLun->fReady, pVScsiLun->fMediaPresent, pVScsiReq, uCmd));
1055
1056	/*
1057	* GET CONFIGURATION, GET EVENT/STATUS NOTIFICATION, INQUIRY, and REQUEST SENSE commands
1058	* operate even when a unit attention condition exists for initiator; every other command
1059	* needs to report CHECK CONDITION in that case.
1060	*/
1061	if ( !pVScsiLunMmc->Core.fReady
1062	&& uCmd != SCSI_INQUIRY
1063	&& uCmd != SCSI_GET_CONFIGURATION
1064	&& uCmd != SCSI_GET_EVENT_STATUS_NOTIFICATION)
1065	{
1066	/*
1067	* A note on media changes: As long as a medium is not present, the unit remains in
1068	* the 'not ready' state. Technically the unit becomes 'ready' soon after a medium
1069	* is inserted; however, we internally keep the 'not ready' state until we've had
1070	* a chance to report the UNIT ATTENTION status indicating a media change.
1071	*/
1072	if (pVScsiLunMmc->Core.fMediaPresent)
1073	{
1074	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_UNIT_ATTENTION,
1075	SCSI_ASC_MEDIUM_MAY_HAVE_CHANGED, 0x00);
1076	pVScsiLunMmc->Core.fReady = true;
1077	}
1078	else
1079	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_NOT_READY,
1080	SCSI_ASC_MEDIUM_NOT_PRESENT, 0x00);
1081	}
1082	else
1083	{
1084	switch (uCmd)
1085	{
1086	case SCSI_TEST_UNIT_READY:
1087	Assert(!pVScsiLunMmc->Core.fReady); /* Only should get here if LUN isn't ready. */
1088	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_NONE);
1089	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_NOT_READY, SCSI_ASC_MEDIUM_NOT_PRESENT, 0x00);
1090	break;
1091
1092	case SCSI_INQUIRY:
1093	{
1094	SCSIINQUIRYDATA ScsiInquiryReply;
1095
1096	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1097	vscsiReqSetXferSize(pVScsiReq, RT_MIN(sizeof(SCSIINQUIRYDATA), scsiBE2H_U16(&pVScsiReq->pbCDB[3])));
1098	memset(&ScsiInquiryReply, 0, sizeof(ScsiInquiryReply));
1099
1100	ScsiInquiryReply.cbAdditional = 31;
1101	ScsiInquiryReply.fRMB = 1; /* Removable. */
1102	ScsiInquiryReply.u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_CD_DVD;
1103	ScsiInquiryReply.u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_CONNECTED;
1104	ScsiInquiryReply.u3AnsiVersion = 0x05; /* MMC-?? compliant */
1105	ScsiInquiryReply.fCmdQue = 1; /* Command queuing supported. */
1106	ScsiInquiryReply.fWBus16 = 1;
1107
1108	const char *pszVendorId = "VBOX";
1109	const char *pszProductId = "CD-ROM";
1110	const char *pszProductLevel = "1.0";
1111	int rcTmp = vscsiLunQueryInqStrings(pVScsiLun, &pszVendorId, &pszProductId, &pszProductLevel);
1112	Assert(RT_SUCCESS(rcTmp) \|\| rcTmp == VERR_NOT_FOUND); RT_NOREF(rcTmp);
1113
1114	scsiPadStrS(ScsiInquiryReply.achVendorId, pszVendorId, 8);
1115	scsiPadStrS(ScsiInquiryReply.achProductId, pszProductId, 16);
1116	scsiPadStrS(ScsiInquiryReply.achProductLevel, pszProductLevel, 4);
1117
1118	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, (uint8_t *)&ScsiInquiryReply, sizeof(SCSIINQUIRYDATA));
1119	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1120	break;
1121	}
1122	case SCSI_READ_CAPACITY:
1123	{
1124	uint8_t aReply[8];
1125	memset(aReply, 0, sizeof(aReply));
1126	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1127	vscsiReqSetXferSize(pVScsiReq, sizeof(aReply));
1128
1129	/*
1130	* If sector size exceeds the maximum value that is
1131	* able to be stored in 4 bytes return 0xffffffff in this field
1132	*/
1133	if (pVScsiLunMmc->cSectors > UINT32_C(0xffffffff))
1134	scsiH2BE_U32(aReply, UINT32_C(0xffffffff));
1135	else
1136	scsiH2BE_U32(aReply, pVScsiLunMmc->cSectors - 1);
1137	scsiH2BE_U32(&aReply[4], _2K);
1138	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
1139	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1140	break;
1141	}
1142	case SCSI_MODE_SENSE_6:
1143	{
1144	uint8_t uModePage = pVScsiReq->pbCDB[2] & 0x3f;
1145	uint8_t aReply[24];
1146	uint8_t *pu8ReplyPos;
1147	bool fValid = false;
1148
1149	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1150	vscsiReqSetXferSize(pVScsiReq, pVScsiReq->pbCDB[4]);
1151	memset(aReply, 0, sizeof(aReply));
1152	aReply[0] = 4; /* Reply length 4. */
1153	aReply[1] = 0; /* Default media type. */
1154	aReply[2] = RT_BIT(4); /* Caching supported. */
1155	aReply[3] = 0; /* Block descriptor length. */
1156
1157	pu8ReplyPos = aReply + 4;
1158
1159	if ((uModePage == 0x08) \|\| (uModePage == 0x3f))
1160	{
1161	memset(pu8ReplyPos, 0, 20);
1162	pu8ReplyPos++ = 0x08; / Page code. */
1163	pu8ReplyPos++ = 0x12; / Size of the page. */
1164	pu8ReplyPos++ = 0x4; / Write cache enabled. */
1165	fValid = true;
1166	} else if (uModePage == 0) {
1167	fValid = true;
1168	}
1169
1170	/* Querying unknown pages must fail. */
1171	if (fValid) {
1172	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
1173	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1174	} else {
1175	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
1176	}
1177	break;
1178	}
1179	case SCSI_MODE_SENSE_10:
1180	{
1181	size_t cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[7]);
1182	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1183	vscsiReqSetXferSize(pVScsiReq, cbMax);
1184	rcReq = vscsiLunMmcModeSense10(pVScsiLunMmc, pVScsiReq, cbMax);
1185	break;
1186	}
1187	case SCSI_SEEK_10:
1188	{
1189	uint32_t uLba = scsiBE2H_U32(&pVScsiReq->pbCDB[2]);
1190
1191	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_NONE);
1192	if (uLba > pVScsiLunMmc->cSectors)
1193	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
1194	SCSI_ASC_LOGICAL_BLOCK_OOR, 0x00);
1195	else
1196	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1197	break;
1198	}
1199	case SCSI_MODE_SELECT_6:
1200	{
1201	/** @todo implement!! */
1202	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_I2T);
1203	vscsiReqSetXferSize(pVScsiReq, pVScsiReq->pbCDB[4]);
1204	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1205	break;
1206	}
1207	case SCSI_READ_6:
1208	{
1209	enmTxDir = VSCSIIOREQTXDIR_READ;
1210	uLbaStart = ((uint64_t) pVScsiReq->pbCDB[3]
1211	\| (pVScsiReq->pbCDB[2] << 8)
1212	\| ((pVScsiReq->pbCDB[1] & 0x1f) << 16));
1213	cSectorTransfer = pVScsiReq->pbCDB[4];
1214	cbSector = _2K;
1215	break;
1216	}
1217	case SCSI_READ_10:
1218	{
1219	enmTxDir = VSCSIIOREQTXDIR_READ;
1220	uLbaStart = scsiBE2H_U32(&pVScsiReq->pbCDB[2]);
1221	cSectorTransfer = scsiBE2H_U16(&pVScsiReq->pbCDB[7]);
1222	cbSector = _2K;
1223	break;
1224	}
1225	case SCSI_READ_12:
1226	{
1227	enmTxDir = VSCSIIOREQTXDIR_READ;
1228	uLbaStart = scsiBE2H_U32(&pVScsiReq->pbCDB[2]);
1229	cSectorTransfer = scsiBE2H_U32(&pVScsiReq->pbCDB[6]);
1230	cbSector = _2K;
1231	break;
1232	}
1233	case SCSI_READ_16:
1234	{
1235	enmTxDir = VSCSIIOREQTXDIR_READ;
1236	uLbaStart = scsiBE2H_U64(&pVScsiReq->pbCDB[2]);
1237	cSectorTransfer = scsiBE2H_U32(&pVScsiReq->pbCDB[10]);
1238	cbSector = _2K;
1239	break;
1240	}
1241	case SCSI_READ_CD:
1242	{
1243	uLbaStart = scsiBE2H_U32(&pVScsiReq->pbCDB[2]);
1244	cSectorTransfer = (pVScsiReq->pbCDB[6] << 16) \| (pVScsiReq->pbCDB[7] << 8) \| pVScsiReq->pbCDB[8];
1245
1246	/*
1247	* If the LBA is in an audio track we are required to ignore pretty much all
1248	* of the channel selection values (except 0x00) and map everything to 0x10
1249	* which means read user data with a sector size of 2352 bytes.
1250	*
1251	* (MMC-6 chapter 6.19.2.6)
1252	*/
1253	uint8_t uChnSel = pVScsiReq->pbCDB[9] & 0xf8;
1254	VDREGIONDATAFORM enmDataForm;
1255	uint64_t cbSectorRegion = 0;
1256	rc = vscsiLunMediumQueryRegionPropertiesForLba(pVScsiLun, uLbaStart,
1257	NULL, NULL, &cbSectorRegion,
1258	&enmDataForm);
1259	if (RT_FAILURE(rc))
1260	{
1261	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
1262	SCSI_ASC_LOGICAL_BLOCK_OOR, 0x00);
1263	break;
1264	}
1265
1266	if (enmDataForm == VDREGIONDATAFORM_CDDA)
1267	{
1268	if (uChnSel == 0)
1269	{
1270	/* nothing */
1271	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1272	}
1273	else
1274	{
1275	enmTxDir = VSCSIIOREQTXDIR_READ;
1276	cbSector = 2352;
1277	}
1278	}
1279	else
1280	{
1281	switch (uChnSel)
1282	{
1283	case 0x00:
1284	/* nothing */
1285	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1286	break;
1287	case 0x10:
1288	/* normal read */
1289	enmTxDir = VSCSIIOREQTXDIR_READ;
1290	cbSector = _2K;
1291	break;
1292	case 0xf8:
1293	{
1294	if (cbSectorRegion == 2048)
1295	{
1296	/*
1297	* Read all data, sector size is 2352.
1298	* Rearrange the buffer and fill the gaps with the sync bytes.
1299	*/
1300	/* Count the number of segments for the buffer we require. */
1301	RTSGBUF SgBuf;
1302	bool fBufTooSmall = false;
1303	uint32_t cSegsNew = 0;
1304	RTSgBufClone(&SgBuf, &pVScsiReq->SgBuf);
1305	for (uint32_t uLba = (uint32_t)uLbaStart; uLba < uLbaStart + cSectorTransfer; uLba++)
1306	{
1307	size_t cbTmp = RTSgBufAdvance(&SgBuf, 16);
1308	if (cbTmp < 16)
1309	{
1310	fBufTooSmall = true;
1311	break;
1312	}
1313
1314	cbTmp = 2048;
1315	while (cbTmp)
1316	{
1317	size_t cbBuf = cbTmp;
1318	RTSgBufGetNextSegment(&SgBuf, &cbBuf);
1319	if (!cbBuf)
1320	{
1321	fBufTooSmall = true;
1322	break;
1323	}
1324
1325	cbTmp -= cbBuf;
1326	cSegsNew++;
1327	}
1328
1329	cbTmp = RTSgBufAdvance(&SgBuf, 280);
1330	if (cbTmp < 280)
1331	{
1332	fBufTooSmall = true;
1333	break;
1334	}
1335	}
1336
1337	if (!fBufTooSmall)
1338	{
1339	PRTSGSEG paSegsNew = (PRTSGSEG)RTMemAllocZ(cSegsNew * sizeof(RTSGSEG));
1340	if (paSegsNew)
1341	{
1342	enmTxDir = VSCSIIOREQTXDIR_READ;
1343
1344	uint32_t idxSeg = 0;
1345	for (uint32_t uLba = (uint32_t)uLbaStart; uLba < uLbaStart + cSectorTransfer; uLba++)
1346	{
1347	/* Sync bytes, see 4.2.3.8 CD Main Channel Block Formats */
1348	uint8_t abBuf[16];
1349	abBuf[0] = 0x00;
1350	memset(&abBuf[1], 0xff, 10);
1351	abBuf[11] = 0x00;
1352	/* MSF */
1353	scsiLBA2MSF(&abBuf[12], uLba);
1354	abBuf[15] = 0x01; /* mode 1 data */
1355	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, &abBuf[0], sizeof(abBuf));
1356
1357	size_t cbTmp = 2048;
1358	while (cbTmp)
1359	{
1360	size_t cbBuf = cbTmp;
1361	paSegsNew[idxSeg].pvSeg = RTSgBufGetNextSegment(&pVScsiReq->SgBuf, &cbBuf);
1362	paSegsNew[idxSeg].cbSeg = cbBuf;
1363	idxSeg++;
1364
1365	cbTmp -= cbBuf;
1366	}
1367
1368	/**
1369	* @todo: maybe compute ECC and parity, layout is:
1370	* 2072 4 EDC
1371	* 2076 172 P parity symbols
1372	* 2248 104 Q parity symbols
1373	*/
1374	RTSgBufSet(&pVScsiReq->SgBuf, 0, 280);
1375	}
1376
1377	paSegs = paSegsNew;
1378	cSegs = cSegsNew;
1379	pVScsiReq->pvLun = paSegsNew;
1380	}
1381	else
1382	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
1383	SCSI_ASC_LOGICAL_BLOCK_OOR, 0x00);
1384	}
1385	else
1386	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
1387	SCSI_ASC_LOGICAL_BLOCK_OOR, 0x00);
1388	}
1389	else if (cbSectorRegion == 2352)
1390	{
1391	/* Sector size matches what is read. */
1392	cbSector = cbSectorRegion;
1393	enmTxDir = VSCSIIOREQTXDIR_READ;
1394	}
1395	break;
1396	}
1397	default:
1398	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
1399	SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
1400	break;
1401	}
1402	}
1403	break;
1404	}
1405	case SCSI_READ_BUFFER:
1406	{
1407	uint8_t uDataMode = pVScsiReq->pbCDB[1] & 0x1f;
1408
1409	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1410	vscsiReqSetXferSize(pVScsiReq, scsiBE2H_U16(&pVScsiReq->pbCDB[6]));
1411
1412	switch (uDataMode)
1413	{
1414	case 0x00:
1415	case 0x01:
1416	case 0x02:
1417	case 0x03:
1418	case 0x0a:
1419	break;
1420	case 0x0b:
1421	{
1422	uint8_t aReply[4];
1423	RT_ZERO(aReply);
1424
1425	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
1426	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1427	break;
1428	}
1429	case 0x1a:
1430	case 0x1c:
1431	break;
1432	default:
1433	AssertMsgFailed(("Invalid data mode\n"));
1434	}
1435	break;
1436	}
1437	case SCSI_VERIFY_10:
1438	case SCSI_START_STOP_UNIT:
1439	{
1440	int rc2 = VINF_SUCCESS;
1441
1442	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_NONE);
1443	switch (pVScsiReq->pbCDB[4] & 3)
1444	{
1445	case 0: /* 00 - Stop motor */
1446	case 1: /* 01 - Start motor */
1447	break;
1448	case 2: /* 10 - Eject media */
1449	rc2 = vscsiLunMediumEject(pVScsiLun);
1450	break;
1451	case 3: /* 11 - Load media */
1452	/** @todo */
1453	break;
1454	}
1455	if (RT_SUCCESS(rc2))
1456	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1457	else
1458	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_MEDIA_LOAD_OR_EJECT_FAILED, 0x02);
1459	break;
1460	}
1461	case SCSI_LOG_SENSE:
1462	{
1463	uint8_t uPageCode = pVScsiReq->pbCDB[2] & 0x3f;
1464	uint8_t uSubPageCode = pVScsiReq->pbCDB[3];
1465
1466	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1467	vscsiReqSetXferSize(pVScsiReq, scsiBE2H_U16(&pVScsiReq->pbCDB[7]));
1468
1469	switch (uPageCode)
1470	{
1471	case 0x00:
1472	{
1473	if (uSubPageCode == 0)
1474	{
1475	uint8_t aReply[4];
1476
1477	aReply[0] = 0;
1478	aReply[1] = 0;
1479	aReply[2] = 0;
1480	aReply[3] = 0;
1481
1482	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
1483	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1484	break;
1485	}
1486	}
1487	RT_FALL_THRU();
1488	default:
1489	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
1490	}
1491	break;
1492	}
1493	case SCSI_SERVICE_ACTION_IN_16:
1494	{
1495	switch (pVScsiReq->pbCDB[1] & 0x1f)
1496	{
1497	case SCSI_SVC_ACTION_IN_READ_CAPACITY_16:
1498	{
1499	uint8_t aReply[32];
1500
1501	memset(aReply, 0, sizeof(aReply));
1502	scsiH2BE_U64(aReply, pVScsiLunMmc->cSectors - 1);
1503	scsiH2BE_U32(&aReply[8], _2K);
1504	/* Leave the rest 0 */
1505
1506	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1507	vscsiReqSetXferSize(pVScsiReq, sizeof(aReply));
1508	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
1509	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1510	break;
1511	}
1512	default:
1513	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
1514	SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00); /* Don't know if this is correct */
1515	}
1516	break;
1517	}
1518	case SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL:
1519	{
1520	pVScsiLunMmc->fLocked = RT_BOOL(pVScsiReq->pbCDB[4] & 0x01);
1521	vscsiLunMediumSetLock(pVScsiLun, pVScsiLunMmc->fLocked);
1522	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1523	break;
1524	}
1525	case SCSI_READ_TOC_PMA_ATIP:
1526	{
1527	uint8_t format;
1528	uint16_t cbMax;
1529	bool fMSF;
1530
1531	format = pVScsiReq->pbCDB[2] & 0x0f;
1532	cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[7]);
1533	fMSF = (pVScsiReq->pbCDB[1] >> 1) & 1;
1534
1535	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1536	vscsiReqSetXferSize(pVScsiReq, cbMax);
1537	switch (format)
1538	{
1539	case 0x00:
1540	rcReq = mmcReadTOCNormal(pVScsiLun, pVScsiReq, cbMax, fMSF);
1541	break;
1542	case 0x01:
1543	rcReq = mmcReadTOCMulti(pVScsiLun, pVScsiReq, cbMax, fMSF);
1544	break;
1545	case 0x02:
1546	rcReq = mmcReadTOCRaw(pVScsiLun, pVScsiReq, cbMax, fMSF);
1547	break;
1548	default:
1549	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
1550	}
1551	break;
1552	}
1553	case SCSI_GET_EVENT_STATUS_NOTIFICATION:
1554	{
1555	/* Only supporting polled mode at the moment. */
1556	size_t cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[7]);
1557
1558	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1559	vscsiReqSetXferSize(pVScsiReq, cbMax);
1560	if (pVScsiReq->pbCDB[1] & 0x1)
1561	rcReq = vscsiLunMmcGetEventStatusNotification(pVScsiLunMmc, pVScsiReq, cbMax);
1562	else
1563	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
1564	break;
1565	}
1566	case SCSI_MECHANISM_STATUS:
1567	{
1568	size_t cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[8]);
1569	uint8_t aReply[8];
1570
1571	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1572	vscsiReqSetXferSize(pVScsiReq, cbMax);
1573	scsiH2BE_U16(&aReply[0], 0);
1574	/* no current LBA */
1575	aReply[2] = 0;
1576	aReply[3] = 0;
1577	aReply[4] = 0;
1578	aReply[5] = 1;
1579	scsiH2BE_U16(&aReply[6], 0);
1580	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(sizeof(aReply), cbMax));
1581	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1582	break;
1583	}
1584	case SCSI_READ_DISC_INFORMATION:
1585	{
1586	uint8_t aReply[34];
1587	size_t cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[7]);
1588
1589	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1590	vscsiReqSetXferSize(pVScsiReq, cbMax);
1591	memset(aReply, '\0', sizeof(aReply));
1592	scsiH2BE_U16(&aReply[0], 32);
1593	aReply[2] = (0 << 4) \| (3 << 2) \| (2 << 0); /* not erasable, complete session, complete disc */
1594	aReply[3] = 1; /* number of first track */
1595	aReply[4] = 1; /* number of sessions (LSB) */
1596	aReply[5] = 1; /* first track number in last session (LSB) */
1597	aReply[6] = (uint8_t)vscsiLunMediumGetRegionCount(pVScsiLun); /* last track number in last session (LSB) */
1598	aReply[7] = (0 << 7) \| (0 << 6) \| (1 << 5) \| (0 << 2) \| (0 << 0); /* disc id not valid, disc bar code not valid, unrestricted use, not dirty, not RW medium */
1599	aReply[8] = 0; /* disc type = CD-ROM */
1600	aReply[9] = 0; /* number of sessions (MSB) */
1601	aReply[10] = 0; /* number of sessions (MSB) */
1602	aReply[11] = 0; /* number of sessions (MSB) */
1603	scsiH2BE_U32(&aReply[16], 0x00ffffff); /* last session lead-in start time is not available */
1604	scsiH2BE_U32(&aReply[20], 0x00ffffff); /* last possible start time for lead-out is not available */
1605	RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, RT_MIN(sizeof(aReply), cbMax));
1606	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1607	break;
1608	}
1609	case SCSI_READ_TRACK_INFORMATION:
1610	{
1611	size_t cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[7]);
1612
1613	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1614	vscsiReqSetXferSize(pVScsiReq, cbMax);
1615	rcReq = vscsiLunMmcReadTrackInformation(pVScsiLunMmc, pVScsiReq, cbMax);
1616	break;
1617	}
1618	case SCSI_GET_CONFIGURATION:
1619	{
1620	size_t cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[7]);
1621
1622	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1623	vscsiReqSetXferSize(pVScsiReq, cbMax);
1624	rcReq = vscsiLunMmcGetConfiguration(pVScsiLunMmc, pVScsiReq, cbMax);
1625	break;
1626	}
1627	case SCSI_READ_DVD_STRUCTURE:
1628	{
1629	size_t cbMax = scsiBE2H_U16(&pVScsiReq->pbCDB[8]);
1630
1631	vscsiReqSetXferDir(pVScsiReq, VSCSIXFERDIR_T2I);
1632	vscsiReqSetXferSize(pVScsiReq, cbMax);
1633	rcReq = vscsiLunMmcReadDvdStructure(pVScsiLunMmc, pVScsiReq, cbMax);
1634	break;
1635	}
1636	default:
1637	//AssertMsgFailed(("Command %#x [%s] not implemented\n", pVScsiReq->pbCDB[0], SCSICmdText(pVScsiReq->pbCDB[0])));
1638	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE, 0x00);
1639	}
1640	}
1641
1642	if (enmTxDir != VSCSIIOREQTXDIR_INVALID)
1643	{
1644	LogFlow(("%s: uLbaStart=%llu cSectorTransfer=%u\n",
1645	__FUNCTION__, uLbaStart, cSectorTransfer));
1646
1647	vscsiReqSetXferDir(pVScsiReq, enmTxDir == VSCSIIOREQTXDIR_WRITE ? VSCSIXFERDIR_I2T : VSCSIXFERDIR_T2I);
1648	vscsiReqSetXferSize(pVScsiReq, cSectorTransfer * cbSector);
1649	if (RT_UNLIKELY(uLbaStart + cSectorTransfer > pVScsiLunMmc->cSectors))
1650	{
1651	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_LOGICAL_BLOCK_OOR, 0x00);
1652	vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
1653	}
1654	else if (!cSectorTransfer)
1655	{
1656	/* A 0 transfer length is not an error. */
1657	rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
1658	vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
1659	}
1660	else
1661	{
1662	/* Check that the sector size is valid. */
1663	VDREGIONDATAFORM enmDataForm = VDREGIONDATAFORM_INVALID;
1664	rc = vscsiLunMediumQueryRegionPropertiesForLba(pVScsiLun, uLbaStart,
1665	NULL, NULL, NULL, &enmDataForm);
1666	if (RT_FAILURE(rc))
1667	{
1668	rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_LOGICAL_BLOCK_OOR, 0x00);
1669	vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
1670	rc = VINF_SUCCESS; /* The request was completed properly, so don't indicate an error here which might cause another completion. */
1671	}
1672	else if ( enmDataForm != VDREGIONDATAFORM_MODE1_2048
1673	&& enmDataForm != VDREGIONDATAFORM_MODE1_2352
1674	&& enmDataForm != VDREGIONDATAFORM_MODE2_2336
1675	&& enmDataForm != VDREGIONDATAFORM_MODE2_2352
1676	&& enmDataForm != VDREGIONDATAFORM_RAW
1677	&& cbSector == _2K)
1678	{
1679	rcReq = vscsiLunReqSenseErrorInfoSet(pVScsiLun, pVScsiReq,
1680	SCSI_SENSE_ILLEGAL_REQUEST \| SCSI_SENSE_FLAG_ILI,
1681	SCSI_ASC_ILLEGAL_MODE_FOR_THIS_TRACK, 0, uLbaStart);
1682	vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
1683	}
1684	else
1685	{
1686	/* Enqueue new I/O request */
1687	rc = vscsiIoReqTransferEnqueueEx(pVScsiLun, pVScsiReq, enmTxDir,
1688	uLbaStart * cbSector,
1689	paSegs, cSegs, cSectorTransfer * cbSector);
1690	}
1691	}
1692	}
1693	else /* Request completed */
1694	vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
1695
1696	return rc;
1697	}
1698
1699	/** @interface_method_impl{VSCSILUNDESC,pfnVScsiLunReqFree} */
1700	static DECLCALLBACK(void) vscsiLunMmcReqFree(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq,
1701	void *pvLun)
1702	{
1703	RT_NOREF2(pVScsiLun, pVScsiReq);
1704	RTMemFree(pvLun);
1705	}
1706
1707	/** @interface_method_impl{VSCSILUNDESC,pfnVScsiLunMediumInserted} */
1708	static DECLCALLBACK(int) vscsiLunMmcMediumInserted(PVSCSILUNINT pVScsiLun)
1709	{
1710	int rc = VINF_SUCCESS;
1711	PVSCSILUNMMC pVScsiLunMmc = (PVSCSILUNMMC)pVScsiLun;
1712
1713	pVScsiLunMmc->cSectors = 0;
1714	uint32_t cTracks = vscsiLunMediumGetRegionCount(pVScsiLun);
1715	for (uint32_t i = 0; i < cTracks && RT_SUCCESS(rc); i++)
1716	{
1717	uint64_t cBlocks = 0;
1718	rc = vscsiLunMediumQueryRegionProperties(pVScsiLun, i, NULL, &cBlocks,
1719	NULL, NULL);
1720	if (RT_FAILURE(rc))
1721	break;
1722	pVScsiLunMmc->cSectors += cBlocks;
1723	}
1724
1725	if (RT_SUCCESS(rc))
1726	{
1727	uint32_t OldStatus, NewStatus;
1728	do
1729	{
1730	OldStatus = ASMAtomicReadU32((volatile uint32_t *)&pVScsiLunMmc->MediaEventStatus);
1731	switch (OldStatus)
1732	{
1733	case MMCEVENTSTATUSTYPE_MEDIA_CHANGED:
1734	case MMCEVENTSTATUSTYPE_MEDIA_REMOVED:
1735	/* no change, we will send "medium removed" + "medium inserted" */
1736	NewStatus = MMCEVENTSTATUSTYPE_MEDIA_CHANGED;
1737	break;
1738	default:
1739	NewStatus = MMCEVENTSTATUSTYPE_MEDIA_NEW;
1740	break;
1741	}
1742	} while (!ASMAtomicCmpXchgU32((volatile uint32_t *)&pVScsiLunMmc->MediaEventStatus,
1743	NewStatus, OldStatus));
1744
1745	ASMAtomicXchgU32(&pVScsiLunMmc->u32MediaTrackType, MMC_MEDIA_TYPE_UNKNOWN);
1746	}
1747
1748	return rc;
1749	}
1750
1751	/** @interface_method_impl{VSCSILUNDESC,pfnVScsiLunMediumRemoved} */
1752	static DECLCALLBACK(int) vscsiLunMmcMediumRemoved(PVSCSILUNINT pVScsiLun)
1753	{
1754	PVSCSILUNMMC pVScsiLunMmc = (PVSCSILUNMMC)pVScsiLun;
1755
1756	ASMAtomicWriteU32((volatile uint32_t *)&pVScsiLunMmc->MediaEventStatus, MMCEVENTSTATUSTYPE_MEDIA_REMOVED);
1757	ASMAtomicXchgU32(&pVScsiLunMmc->u32MediaTrackType, MMC_MEDIA_TYPE_NO_DISC);
1758	pVScsiLunMmc->cSectors = 0;
1759	return VINF_SUCCESS;
1760	}
1761
1762
1763	VSCSILUNDESC g_VScsiLunTypeMmc =
1764	{
1765	/** enmLunType */
1766	VSCSILUNTYPE_MMC,
1767	/** pcszDescName */
1768	"MMC",
1769	/** cbLun */
1770	sizeof(VSCSILUNMMC),
1771	/** cSupOpcInfo */
1772	0,
1773	/** paSupOpcInfo */
1774	NULL,
1775	/** pfnVScsiLunInit */
1776	vscsiLunMmcInit,
1777	/** pfnVScsiLunDestroy */
1778	vscsiLunMmcDestroy,
1779	/** pfnVScsiLunReqProcess */
1780	vscsiLunMmcReqProcess,
1781	/** pfnVScsiLunReqFree */
1782	vscsiLunMmcReqFree,
1783	/** pfnVScsiLunMediumInserted */
1784	vscsiLunMmcMediumInserted,
1785	/** pfnVScsiLunMediumRemoved */
1786	vscsiLunMmcMediumRemoved
1787	};

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source: vbox/trunk/src/VBox/Devices/Storage/VSCSI/VSCSILunMmc.cpp@ 83062

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