VirtualBox

source: vbox/trunk/src/VBox/Devices/Storage/VSCSI/VSCSILunSbc.cpp@ 62506

Last change on this file since 62506 was 62506, checked in by vboxsync, 8 years ago

(C) 2016
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  • Property svn:keywords set to Author Date Id Revision
File size: 23.7 KB
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1/* $Id: VSCSILunSbc.cpp 62506 2016-07-22 19:09:44Z vboxsync $ */
2/** @file
3 * Virtual SCSI driver: SBC LUN implementation (hard disks)
4 */
5
6/*
7 * Copyright (C) 2006-2016 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18
19/*********************************************************************************************************************************
20* Header Files *
21*********************************************************************************************************************************/
22#define LOG_GROUP LOG_GROUP_VSCSI
23#include <VBox/log.h>
24#include <VBox/err.h>
25#include <VBox/types.h>
26#include <VBox/vscsi.h>
27#include <iprt/cdefs.h>
28#include <iprt/asm.h>
29#include <iprt/assert.h>
30#include <iprt/mem.h>
31#include <iprt/string.h>
32
33#include "VSCSIInternal.h"
34
35/** Maximum of amount of LBAs to unmap with one command. */
36#define VSCSI_UNMAP_LBAS_MAX(a_cbSector) ((10*_1M) / a_cbSector)
37
38/**
39 * SBC LUN instance
40 */
41typedef struct VSCSILUNSBC
42{
43 /** Core LUN structure */
44 VSCSILUNINT Core;
45 /** Sector size of the medium. */
46 uint32_t cbSector;
47 /** Size of the virtual disk. */
48 uint64_t cSectors;
49 /** VPD page pool. */
50 VSCSIVPDPOOL VpdPagePool;
51} VSCSILUNSBC;
52/** Pointer to a SBC LUN instance */
53typedef VSCSILUNSBC *PVSCSILUNSBC;
54
55static DECLCALLBACK(int) vscsiLunSbcInit(PVSCSILUNINT pVScsiLun)
56{
57 PVSCSILUNSBC pVScsiLunSbc = (PVSCSILUNSBC)pVScsiLun;
58 uint64_t cbDisk = 0;
59 int rc = VINF_SUCCESS;
60 int cVpdPages = 0;
61
62 rc = vscsiLunMediumGetSectorSize(pVScsiLun, &pVScsiLunSbc->cbSector);
63 if (RT_SUCCESS(rc))
64 {
65 rc = vscsiLunMediumGetSize(pVScsiLun, &cbDisk);
66 if (RT_SUCCESS(rc))
67 pVScsiLunSbc->cSectors = cbDisk / pVScsiLunSbc->cbSector;
68 }
69
70 if (RT_SUCCESS(rc))
71 rc = vscsiVpdPagePoolInit(&pVScsiLunSbc->VpdPagePool);
72
73 /* Create device identification page - mandatory. */
74 if (RT_SUCCESS(rc))
75 {
76 PVSCSIVPDPAGEDEVID pDevIdPage;
77
78 rc = vscsiVpdPagePoolAllocNewPage(&pVScsiLunSbc->VpdPagePool, VSCSI_VPD_DEVID_NUMBER,
79 VSCSI_VPD_DEVID_SIZE, (uint8_t **)&pDevIdPage);
80 if (RT_SUCCESS(rc))
81 {
82 /** @todo: Not conforming to the SPC spec but Solaris needs at least a stub to work. */
83 pDevIdPage->u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS;
84 pDevIdPage->u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_CONNECTED;
85 pDevIdPage->u16PageLength = RT_H2BE_U16(0x0);
86 cVpdPages++;
87 }
88 }
89
90 if ( RT_SUCCESS(rc)
91 && (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_UNMAP))
92 {
93 PVSCSIVPDPAGEBLOCKLIMITS pBlkPage;
94 PVSCSIVPDPAGEBLOCKPROV pBlkProvPage;
95
96 /* Create the page and fill it. */
97 rc = vscsiVpdPagePoolAllocNewPage(&pVScsiLunSbc->VpdPagePool, VSCSI_VPD_BLOCK_LIMITS_NUMBER,
98 VSCSI_VPD_BLOCK_LIMITS_SIZE, (uint8_t **)&pBlkPage);
99 if (RT_SUCCESS(rc))
100 {
101 pBlkPage->u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS;
102 pBlkPage->u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_CONNECTED;
103 pBlkPage->u16PageLength = RT_H2BE_U16(0x3c);
104 pBlkPage->u8MaxCmpWriteLength = 0;
105 pBlkPage->u16OptTrfLengthGran = 0;
106 pBlkPage->u32MaxTrfLength = 0;
107 pBlkPage->u32OptTrfLength = 0;
108 pBlkPage->u32MaxPreXdTrfLength = 0;
109 pBlkPage->u32MaxUnmapLbaCount = RT_H2BE_U32(VSCSI_UNMAP_LBAS_MAX(pVScsiLunSbc->cbSector));
110 pBlkPage->u32MaxUnmapBlkDescCount = UINT32_C(0xffffffff);
111 pBlkPage->u32OptUnmapGranularity = 0;
112 pBlkPage->u32UnmapGranularityAlignment = 0;
113 cVpdPages++;
114 }
115
116 if (RT_SUCCESS(rc))
117 {
118 rc = vscsiVpdPagePoolAllocNewPage(&pVScsiLunSbc->VpdPagePool, VSCSI_VPD_BLOCK_PROV_NUMBER,
119 VSCSI_VPD_BLOCK_PROV_SIZE, (uint8_t **)&pBlkProvPage);
120 if (RT_SUCCESS(rc))
121 {
122 pBlkProvPage->u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS;
123 pBlkProvPage->u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_CONNECTED;
124 pBlkProvPage->u16PageLength = RT_H2BE_U16(0x4);
125 pBlkProvPage->u8ThresholdExponent = 1;
126 pBlkProvPage->fLBPU = true;
127 cVpdPages++;
128 }
129 }
130 }
131
132 if ( RT_SUCCESS(rc)
133 && (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_NON_ROTATIONAL))
134 {
135 PVSCSIVPDPAGEBLOCKCHARACTERISTICS pBlkPage;
136
137 /* Create the page and fill it. */
138 rc = vscsiVpdPagePoolAllocNewPage(&pVScsiLunSbc->VpdPagePool, VSCSI_VPD_BLOCK_CHARACTERISTICS_NUMBER,
139 VSCSI_VPD_BLOCK_CHARACTERISTICS_SIZE, (uint8_t **)&pBlkPage);
140 if (RT_SUCCESS(rc))
141 {
142 pBlkPage->u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS;
143 pBlkPage->u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_CONNECTED;
144 pBlkPage->u16PageLength = RT_H2BE_U16(0x3c);
145 pBlkPage->u16MediumRotationRate = RT_H2BE_U16(VSCSI_VPD_BLOCK_CHARACT_MEDIUM_ROTATION_RATE_NON_ROTATING);
146 cVpdPages++;
147 }
148 }
149
150 if ( RT_SUCCESS(rc)
151 && cVpdPages)
152 {
153 PVSCSIVPDPAGESUPPORTEDPAGES pVpdPages;
154
155 rc = vscsiVpdPagePoolAllocNewPage(&pVScsiLunSbc->VpdPagePool, VSCSI_VPD_SUPPORTED_PAGES_NUMBER,
156 VSCSI_VPD_SUPPORTED_PAGES_SIZE + cVpdPages, (uint8_t **)&pVpdPages);
157 if (RT_SUCCESS(rc))
158 {
159 unsigned idxVpdPage = 0;
160 pVpdPages->u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS;
161 pVpdPages->u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_CONNECTED;
162 pVpdPages->u16PageLength = RT_H2BE_U16(cVpdPages);
163
164 pVpdPages->abVpdPages[idxVpdPage++] = VSCSI_VPD_DEVID_NUMBER;
165
166 if (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_UNMAP)
167 {
168 pVpdPages->abVpdPages[idxVpdPage++] = VSCSI_VPD_BLOCK_LIMITS_NUMBER;
169 pVpdPages->abVpdPages[idxVpdPage++] = VSCSI_VPD_BLOCK_PROV_NUMBER;
170 }
171
172 if (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_NON_ROTATIONAL)
173 pVpdPages->abVpdPages[idxVpdPage++] = VSCSI_VPD_BLOCK_CHARACTERISTICS_NUMBER;
174 }
175 }
176
177 /* For SBC LUNs, there will be no ready state transitions. */
178 pVScsiLunSbc->Core.fReady = true;
179
180 return rc;
181}
182
183static DECLCALLBACK(int) vscsiLunSbcDestroy(PVSCSILUNINT pVScsiLun)
184{
185 PVSCSILUNSBC pVScsiLunSbc = (PVSCSILUNSBC)pVScsiLun;
186
187 vscsiVpdPagePoolDestroy(&pVScsiLunSbc->VpdPagePool);
188
189 return VINF_SUCCESS;
190}
191
192static DECLCALLBACK(int) vscsiLunSbcReqProcess(PVSCSILUNINT pVScsiLun, PVSCSIREQINT pVScsiReq)
193{
194 PVSCSILUNSBC pVScsiLunSbc = (PVSCSILUNSBC)pVScsiLun;
195 int rc = VINF_SUCCESS;
196 int rcReq = SCSI_STATUS_OK;
197 uint64_t uLbaStart = 0;
198 uint32_t cSectorTransfer = 0;
199 VSCSIIOREQTXDIR enmTxDir = VSCSIIOREQTXDIR_INVALID;
200
201 switch(pVScsiReq->pbCDB[0])
202 {
203 case SCSI_INQUIRY:
204 {
205 /* Check for EVPD bit. */
206 if (pVScsiReq->pbCDB[1] & 0x1)
207 {
208 rc = vscsiVpdPagePoolQueryPage(&pVScsiLunSbc->VpdPagePool, pVScsiReq, pVScsiReq->pbCDB[2]);
209 if (RT_UNLIKELY(rc == VERR_NOT_FOUND))
210 {
211 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
212 SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
213 rc = VINF_SUCCESS;
214 }
215 else
216 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
217 }
218 else if (pVScsiReq->pbCDB[2] != 0) /* A non zero page code is an error. */
219 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST,
220 SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
221 else
222 {
223 SCSIINQUIRYDATA ScsiInquiryReply;
224
225 memset(&ScsiInquiryReply, 0, sizeof(ScsiInquiryReply));
226
227 ScsiInquiryReply.cbAdditional = 31;
228 ScsiInquiryReply.u5PeripheralDeviceType = SCSI_INQUIRY_DATA_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS;
229 ScsiInquiryReply.u3PeripheralQualifier = SCSI_INQUIRY_DATA_PERIPHERAL_QUALIFIER_CONNECTED;
230 ScsiInquiryReply.u3AnsiVersion = 0x05; /* SPC-4 compliant */
231 ScsiInquiryReply.fCmdQue = 1; /* Command queuing supported. */
232 ScsiInquiryReply.fWBus16 = 1;
233 vscsiPadStr(ScsiInquiryReply.achVendorId, "VBOX", 8);
234 vscsiPadStr(ScsiInquiryReply.achProductId, "HARDDISK", 16);
235 vscsiPadStr(ScsiInquiryReply.achProductLevel, "1.0", 4);
236
237 RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, (uint8_t *)&ScsiInquiryReply, sizeof(SCSIINQUIRYDATA));
238 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
239 }
240 break;
241 }
242 case SCSI_READ_CAPACITY:
243 {
244 uint8_t aReply[8];
245 memset(aReply, 0, sizeof(aReply));
246
247 /*
248 * If sector size exceeds the maximum value that is
249 * able to be stored in 4 bytes return 0xffffffff in this field
250 */
251 if (pVScsiLunSbc->cSectors > UINT32_C(0xffffffff))
252 vscsiH2BEU32(aReply, UINT32_C(0xffffffff));
253 else
254 vscsiH2BEU32(aReply, pVScsiLunSbc->cSectors - 1);
255 vscsiH2BEU32(&aReply[4], pVScsiLunSbc->cbSector);
256 RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
257 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
258 break;
259 }
260 case SCSI_MODE_SENSE_6:
261 {
262 uint8_t uModePage = pVScsiReq->pbCDB[2] & 0x3f;
263 uint8_t aReply[24];
264 uint8_t *pu8ReplyPos;
265 bool fValid = false;
266
267 memset(aReply, 0, sizeof(aReply));
268 aReply[0] = 4; /* Reply length 4. */
269 aReply[1] = 0; /* Default media type. */
270 aReply[2] = RT_BIT(4); /* Caching supported. */
271 aReply[3] = 0; /* Block descriptor length. */
272
273 if (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_READONLY)
274 aReply[2] |= RT_BIT(7); /* Set write protect bit */
275
276 pu8ReplyPos = aReply + 4;
277
278 if ((uModePage == 0x08) || (uModePage == 0x3f))
279 {
280 memset(pu8ReplyPos, 0, 20);
281 *pu8ReplyPos++ = 0x08; /* Page code. */
282 *pu8ReplyPos++ = 0x12; /* Size of the page. */
283 *pu8ReplyPos++ = 0x4; /* Write cache enabled. */
284 fValid = true;
285 } else if (uModePage == 0) {
286 fValid = true;
287 }
288
289 /* Querying unknown pages must fail. */
290 if (fValid) {
291 RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
292 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
293 } else {
294 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
295 }
296 break;
297 }
298 case SCSI_MODE_SELECT_6:
299 {
300 uint8_t abParms[12];
301 size_t cbCopied;
302 size_t cbList = pVScsiReq->pbCDB[4];
303
304 /* Copy the parameters. */
305 cbCopied = RTSgBufCopyToBuf(&pVScsiReq->SgBuf, &abParms[0], sizeof(abParms));
306
307 /* Handle short LOGICAL BLOCK LENGTH parameter. */
308 if ( !(pVScsiReq->pbCDB[1] & 0x01)
309 && cbCopied == sizeof(abParms)
310 && cbList >= 12
311 && abParms[3] == 8)
312 {
313 uint32_t cbBlock;
314
315 cbBlock = vscsiBE2HU24(&abParms[4 + 5]);
316 Log2(("SBC: set LOGICAL BLOCK LENGTH to %u\n", cbBlock));
317 if (cbBlock == 512) /* Fixed block size. */
318 {
319 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
320 break;
321 }
322 }
323 /* Fail any other requests. */
324 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
325 break;
326 }
327 case SCSI_READ_6:
328 {
329 enmTxDir = VSCSIIOREQTXDIR_READ;
330 uLbaStart = ((uint64_t) pVScsiReq->pbCDB[3]
331 | (pVScsiReq->pbCDB[2] << 8)
332 | ((pVScsiReq->pbCDB[1] & 0x1f) << 16));
333 cSectorTransfer = pVScsiReq->pbCDB[4];
334 break;
335 }
336 case SCSI_READ_10:
337 {
338 enmTxDir = VSCSIIOREQTXDIR_READ;
339 uLbaStart = vscsiBE2HU32(&pVScsiReq->pbCDB[2]);
340 cSectorTransfer = vscsiBE2HU16(&pVScsiReq->pbCDB[7]);
341 break;
342 }
343 case SCSI_READ_12:
344 {
345 enmTxDir = VSCSIIOREQTXDIR_READ;
346 uLbaStart = vscsiBE2HU32(&pVScsiReq->pbCDB[2]);
347 cSectorTransfer = vscsiBE2HU32(&pVScsiReq->pbCDB[6]);
348 break;
349 }
350 case SCSI_READ_16:
351 {
352 enmTxDir = VSCSIIOREQTXDIR_READ;
353 uLbaStart = vscsiBE2HU64(&pVScsiReq->pbCDB[2]);
354 cSectorTransfer = vscsiBE2HU32(&pVScsiReq->pbCDB[10]);
355 break;
356 }
357 case SCSI_WRITE_6:
358 {
359 enmTxDir = VSCSIIOREQTXDIR_WRITE;
360 uLbaStart = ((uint64_t) pVScsiReq->pbCDB[3]
361 | (pVScsiReq->pbCDB[2] << 8)
362 | ((pVScsiReq->pbCDB[1] & 0x1f) << 16));
363 cSectorTransfer = pVScsiReq->pbCDB[4];
364 break;
365 }
366 case SCSI_WRITE_10:
367 {
368 enmTxDir = VSCSIIOREQTXDIR_WRITE;
369 uLbaStart = vscsiBE2HU32(&pVScsiReq->pbCDB[2]);
370 cSectorTransfer = vscsiBE2HU16(&pVScsiReq->pbCDB[7]);
371 break;
372 }
373 case SCSI_WRITE_12:
374 {
375 enmTxDir = VSCSIIOREQTXDIR_WRITE;
376 uLbaStart = vscsiBE2HU32(&pVScsiReq->pbCDB[2]);
377 cSectorTransfer = vscsiBE2HU32(&pVScsiReq->pbCDB[6]);
378 break;
379 }
380 case SCSI_WRITE_16:
381 {
382 enmTxDir = VSCSIIOREQTXDIR_WRITE;
383 uLbaStart = vscsiBE2HU64(&pVScsiReq->pbCDB[2]);
384 cSectorTransfer = vscsiBE2HU32(&pVScsiReq->pbCDB[10]);
385 break;
386 }
387 case SCSI_SYNCHRONIZE_CACHE:
388 {
389 break; /* Handled below */
390 }
391 case SCSI_READ_BUFFER:
392 {
393 uint8_t uDataMode = pVScsiReq->pbCDB[1] & 0x1f;
394
395 switch (uDataMode)
396 {
397 case 0x00:
398 case 0x01:
399 case 0x02:
400 case 0x03:
401 case 0x0a:
402 break;
403 case 0x0b:
404 {
405 uint8_t aReply[4];
406
407 /* We do not implement an echo buffer. */
408 memset(aReply, 0, sizeof(aReply));
409
410 RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
411 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
412 break;
413 }
414 case 0x1a:
415 case 0x1c:
416 break;
417 default:
418 AssertMsgFailed(("Invalid data mode\n"));
419 }
420 break;
421 }
422 case SCSI_VERIFY_10:
423 case SCSI_START_STOP_UNIT:
424 {
425 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
426 break;
427 }
428 case SCSI_LOG_SENSE:
429 {
430 uint16_t cbMax = vscsiBE2HU16(&pVScsiReq->pbCDB[7]);
431 uint8_t uPageCode = pVScsiReq->pbCDB[2] & 0x3f;
432 uint8_t uSubPageCode = pVScsiReq->pbCDB[3];
433
434 switch (uPageCode)
435 {
436 case 0x00:
437 {
438 if (uSubPageCode == 0)
439 {
440 uint8_t aReply[4];
441
442 aReply[0] = 0;
443 aReply[1] = 0;
444 aReply[2] = 0;
445 aReply[3] = 0;
446 RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
447 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
448 break;
449 }
450 }
451 default:
452 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
453 }
454 break;
455 }
456 case SCSI_SERVICE_ACTION_IN_16:
457 {
458 switch (pVScsiReq->pbCDB[1] & 0x1f)
459 {
460 case SCSI_SVC_ACTION_IN_READ_CAPACITY_16:
461 {
462 uint8_t aReply[32];
463
464 memset(aReply, 0, sizeof(aReply));
465 vscsiH2BEU64(aReply, pVScsiLunSbc->cSectors - 1);
466 vscsiH2BEU32(&aReply[8], 512);
467 if (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_UNMAP)
468 aReply[14] = 0x80; /* LPME enabled */
469 /* Leave the rest 0 */
470
471 RTSgBufCopyFromBuf(&pVScsiReq->SgBuf, aReply, sizeof(aReply));
472 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
473 break;
474 }
475 default:
476 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00); /* Don't know if this is correct */
477 }
478 break;
479 }
480 case SCSI_UNMAP:
481 {
482 if (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_UNMAP)
483 {
484 uint8_t abHdr[8];
485 size_t cbCopied;
486 size_t cbList = vscsiBE2HU16(&pVScsiReq->pbCDB[7]);
487
488 /* Copy the header. */
489 cbCopied = RTSgBufCopyToBuf(&pVScsiReq->SgBuf, &abHdr[0], sizeof(abHdr));
490
491 /* Using the anchor bit is not supported. */
492 if ( !(pVScsiReq->pbCDB[1] & 0x01)
493 && cbCopied == sizeof(abHdr)
494 && cbList >= 8)
495 {
496 uint32_t cBlkDesc = vscsiBE2HU16(&abHdr[2]) / 16;
497
498 if (cBlkDesc)
499 {
500 PRTRANGE paRanges = (PRTRANGE)RTMemAllocZ(cBlkDesc * sizeof(RTRANGE));
501 if (paRanges)
502 {
503 for (unsigned i = 0; i < cBlkDesc; i++)
504 {
505 uint8_t abBlkDesc[16];
506
507 cbCopied = RTSgBufCopyToBuf(&pVScsiReq->SgBuf, &abBlkDesc[0], sizeof(abBlkDesc));
508 if (RT_UNLIKELY(cbCopied != sizeof(abBlkDesc)))
509 {
510 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
511 break;
512 }
513
514 paRanges[i].offStart = vscsiBE2HU64(&abBlkDesc[0]) * 512;
515 paRanges[i].cbRange = vscsiBE2HU32(&abBlkDesc[8]) * 512;
516 }
517
518 if (rcReq == SCSI_STATUS_OK)
519 rc = vscsiIoReqUnmapEnqueue(pVScsiLun, pVScsiReq, paRanges, cBlkDesc);
520 if ( rcReq != SCSI_STATUS_OK
521 || RT_FAILURE(rc))
522 RTMemFree(paRanges);
523 }
524 else /* Out of memory. */
525 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_HARDWARE_ERROR, SCSI_ASC_SYSTEM_RESOURCE_FAILURE,
526 SCSI_ASCQ_SYSTEM_BUFFER_FULL);
527 }
528 else /* No block descriptors is not an error condition. */
529 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
530 }
531 else /* Invalid CDB. */
532 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_INV_FIELD_IN_CMD_PACKET, 0x00);
533 }
534 else
535 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE, 0x00);
536
537 break;
538 }
539 default:
540 //AssertMsgFailed(("Command %#x [%s] not implemented\n", pRequest->pbCDB[0], SCSICmdText(pRequest->pbCDB[0])));
541 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_OPCODE, 0x00);
542 }
543
544 if (enmTxDir != VSCSIIOREQTXDIR_INVALID)
545 {
546 LogFlow(("%s: uLbaStart=%llu cSectorTransfer=%u\n",
547 __FUNCTION__, uLbaStart, cSectorTransfer));
548
549 if (RT_UNLIKELY(uLbaStart + cSectorTransfer > pVScsiLunSbc->cSectors))
550 {
551 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_ILLEGAL_REQUEST, SCSI_ASC_LOGICAL_BLOCK_OOR, 0x00);
552 vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
553 }
554 else if (!cSectorTransfer)
555 {
556 /* A 0 transfer length is not an error. */
557 rcReq = vscsiLunReqSenseOkSet(pVScsiLun, pVScsiReq);
558 vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
559 }
560 else
561 {
562 /* Enqueue new I/O request */
563 if ( ( enmTxDir == VSCSIIOREQTXDIR_WRITE
564 || enmTxDir == VSCSIIOREQTXDIR_FLUSH)
565 && (pVScsiLun->fFeatures & VSCSI_LUN_FEATURE_READONLY))
566 rcReq = vscsiLunReqSenseErrorSet(pVScsiLun, pVScsiReq, SCSI_SENSE_DATA_PROTECT, SCSI_ASC_WRITE_PROTECTED, 0x00);
567 else
568 rc = vscsiIoReqTransferEnqueue(pVScsiLun, pVScsiReq, enmTxDir,
569 uLbaStart * 512, cSectorTransfer * 512);
570 }
571 }
572 else if (pVScsiReq->pbCDB[0] == SCSI_SYNCHRONIZE_CACHE)
573 {
574 /* Enqueue flush */
575 rc = vscsiIoReqFlushEnqueue(pVScsiLun, pVScsiReq);
576 }
577 else if (pVScsiReq->pbCDB[0] != SCSI_UNMAP) /* Request completed */
578 vscsiDeviceReqComplete(pVScsiLun->pVScsiDevice, pVScsiReq, rcReq, false, VINF_SUCCESS);
579
580 return rc;
581}
582
583VSCSILUNDESC g_VScsiLunTypeSbc =
584{
585 /** enmLunType */
586 VSCSILUNTYPE_SBC,
587 /** pcszDescName */
588 "SBC",
589 /** cbLun */
590 sizeof(VSCSILUNSBC),
591 /** pfnVScsiLunInit */
592 vscsiLunSbcInit,
593 /** pfnVScsiLunDestroy */
594 vscsiLunSbcDestroy,
595 /** pfnVScsiLunReqProcess */
596 vscsiLunSbcReqProcess
597};
598
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