VirtualBox

source: vbox/trunk/include/VBox/vscsi.h@ 71294

Last change on this file since 71294 was 70688, checked in by vboxsync, 7 years ago

VSCSI,DrvSCSI: Add method to query INQUIRY related data from the outside to overwrite defaults
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1/* $Id: vscsi.h 70688 2018-01-22 19:38:45Z vboxsync $ */
2/** @file
3 * VBox storage drivers - Virtual SCSI driver
4 */
5
6/*
7 * Copyright (C) 2006-2017 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 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27#ifndef ___VBox_vscsi_h
28#define ___VBox_vscsi_h
29
30#include <VBox/cdefs.h>
31#include <VBox/types.h>
32#include <VBox/vdmedia.h>
33#include <iprt/sg.h>
34
35RT_C_DECLS_BEGIN
36
37#ifdef IN_RING0
38# error "There are no VBox VSCSI APIs available in Ring-0 Host Context!"
39#endif
40
41/** @defgroup grp_drv_vscsi Virtual VSCSI Driver
42 * @ingroup grp_devdrv
43 * @{
44 */
45/** @todo figure better grouping. */
46
47/** A virtual SCSI device handle */
48typedef struct VSCSIDEVICEINT *VSCSIDEVICE;
49/** A pointer to a virtual SCSI device handle. */
50typedef VSCSIDEVICE *PVSCSIDEVICE;
51/** A virtual SCSI LUN handle. */
52typedef struct VSCSILUNINT *VSCSILUN;
53/** A pointer to a virtual SCSI LUN handle. */
54typedef VSCSILUN *PVSCSILUN;
55/** A virtual SCSI request handle. */
56typedef struct VSCSIREQINT *VSCSIREQ;
57/** A pointer to a virtual SCSI request handle. */
58typedef VSCSIREQ *PVSCSIREQ;
59/** A SCSI I/O request handle. */
60typedef struct VSCSIIOREQINT *VSCSIIOREQ;
61/** A pointer to a SCSI I/O request handle. */
62typedef VSCSIIOREQ *PVSCSIIOREQ;
63
64/**
65 * Virtual SCSI I/O request transfer direction.
66 */
67typedef enum VSCSIIOREQTXDIR
68{
69 /** Invalid direction */
70 VSCSIIOREQTXDIR_INVALID = 0,
71 /** Read */
72 VSCSIIOREQTXDIR_READ,
73 /** Write */
74 VSCSIIOREQTXDIR_WRITE,
75 /** Flush */
76 VSCSIIOREQTXDIR_FLUSH,
77 /** Unmap */
78 VSCSIIOREQTXDIR_UNMAP,
79 /** 32bit hack */
80 VSCSIIOREQTXDIR_32BIT_HACK = 0x7fffffff
81} VSCSIIOREQTXDIR;
82/** Pointer to a SCSI LUN type */
83typedef VSCSIIOREQTXDIR *PVSCSIIOREQTXDIR;
84
85/**
86 * LUN types we support
87 */
88typedef enum VSCSILUNTYPE
89{
90 /** Invalid type */
91 VSCSILUNTYPE_INVALID = 0,
92 /** Hard disk (SBC) */
93 VSCSILUNTYPE_SBC,
94 /** CD/DVD drive (MMC) */
95 VSCSILUNTYPE_MMC,
96 /** Tape drive (SSC) */
97 VSCSILUNTYPE_SSC,
98 /** Last value to indicate an invalid device */
99 VSCSILUNTYPE_LAST,
100 /** 32bit hack */
101 VSCSILUNTYPE_32BIT_HACK = 0x7fffffff
102} VSCSILUNTYPE;
103/** Pointer to a SCSI LUN type */
104typedef VSCSILUNTYPE *PVSCSILUNTYPE;
105
106/** The LUN can handle the UNMAP command. */
107#define VSCSI_LUN_FEATURE_UNMAP RT_BIT(0)
108/** The LUN has a non rotational medium. */
109#define VSCSI_LUN_FEATURE_NON_ROTATIONAL RT_BIT(1)
110/** The medium of the LUN is readonly. */
111#define VSCSI_LUN_FEATURE_READONLY RT_BIT(2)
112
113/**
114 * Virtual SCSI LUN I/O Callback table.
115 */
116typedef struct VSCSILUNIOCALLBACKS
117{
118 /**
119 * Sets the size of the allocator specific memory for a I/O request.
120 *
121 * @returns VBox status code.
122 * @param hVScsiLun Virtual SCSI LUN handle.
123 * @param pvScsiLunUser Opaque user data which may be used to identify the
124 * medium.
125 * @param cbVScsiIoReqAlloc The size of the allocator specific memory in bytes.
126 * @thread EMT.
127 */
128 DECLR3CALLBACKMEMBER(int, pfnVScsiLunReqAllocSizeSet, (VSCSILUN hVScsiLun, void *pvScsiLunUser,
129 size_t cbVScsiIoReqAlloc));
130
131 /**
132 * Allocates a new I/O request.
133 *
134 * @returns VBox status code.
135 * @param hVScsiLun Virtual SCSI LUN handle.
136 * @param pvScsiLunUser Opaque user data which may be used to identify the
137 * medium.
138 * @param u64Tag A tag to assign to the request handle for identification later on.
139 * @param phVScsiIoReq Where to store the handle to the allocated I/O request on success.
140 * @thread Any thread.
141 */
142 DECLR3CALLBACKMEMBER(int, pfnVScsiLunReqAlloc, (VSCSILUN hVScsiLun, void *pvScsiLunUser,
143 uint64_t u64Tag, PVSCSIIOREQ phVScsiIoReq));
144
145 /**
146 * Frees a given I/O request.
147 *
148 * @returns VBox status code.
149 * @param hVScsiLun Virtual SCSI LUN handle.
150 * @param pvScsiLunUser Opaque user data which may be used to identify the
151 * medium.
152 * @param hVScsiIoReq The VSCSI I/O request to free.
153 * @thread Any thread.
154 */
155 DECLR3CALLBACKMEMBER(int, pfnVScsiLunReqFree, (VSCSILUN hVScsiLun, void *pvScsiLunUser, VSCSIIOREQ hVScsiIoReq));
156
157 /**
158 * Returns the number of regions for the medium.
159 *
160 * @returns Number of regions.
161 * @param hVScsiLun Virtual SCSI LUN handle.
162 * @param pvScsiLunUser Opaque user data which may be used to identify the
163 * medium.
164 */
165 DECLR3CALLBACKMEMBER(uint32_t, pfnVScsiLunMediumGetRegionCount,(VSCSILUN hVScsiLun, void *pvScsiLunUser));
166
167 /**
168 * Queries the properties for the given region.
169 *
170 * @returns VBox status code.
171 * @retval VERR_NOT_FOUND if the region index is not known.
172 * @param hVScsiLun Virtual SCSI LUN handle.
173 * @param pvScsiLunUser Opaque user data which may be used to identify the
174 * medium.
175 * @param uRegion The region index to query the properties of.
176 * @param pu64LbaStart Where to store the starting LBA for the region on success.
177 * @param pcBlocks Where to store the number of blocks for the region on success.
178 * @param pcbBlock Where to store the size of one block in bytes on success.
179 * @param penmDataForm WHere to store the data form for the region on success.
180 */
181 DECLR3CALLBACKMEMBER(int, pfnVScsiLunMediumQueryRegionProperties,(VSCSILUN hVScsiLun, void *pvScsiLunUser,
182 uint32_t uRegion, uint64_t *pu64LbaStart,
183 uint64_t *pcBlocks, uint64_t *pcbBlock,
184 PVDREGIONDATAFORM penmDataForm));
185
186 /**
187 * Queries the properties for the region covering the given LBA.
188 *
189 * @returns VBox status code.
190 * @retval VERR_NOT_FOUND if the region index is not known.
191 * @param hVScsiLun Virtual SCSI LUN handle.
192 * @param pvScsiLunUser Opaque user data which may be used to identify the
193 * medium.
194 * @param u64LbaStart Where to store the starting LBA for the region on success.
195 * @param puRegion Where to store the region number on success.
196 * @param pcBlocks Where to store the number of blocks left in this region starting from the given LBA.
197 * @param pcbBlock Where to store the size of one block in bytes on success.
198 * @param penmDataForm WHere to store the data form for the region on success.
199 */
200 DECLR3CALLBACKMEMBER(int, pfnVScsiLunMediumQueryRegionPropertiesForLba,(VSCSILUN hVScsiLun, void *pvScsiLunUser,
201 uint64_t u64LbaStart, uint32_t *puRegion,
202 uint64_t *pcBlocks, uint64_t *pcbBlock,
203 PVDREGIONDATAFORM penmDataForm));
204
205 /**
206 * Set the lock state of the underlying medium.
207 *
208 * @returns VBox status status code.
209 * @param hVScsiLun Virtual SCSI LUN handle.
210 * @param pvScsiLunUser Opaque user data which may be used to identify the
211 * medium.
212 * @param fLocked New lock state (locked/unlocked).
213 */
214 DECLR3CALLBACKMEMBER(int, pfnVScsiLunMediumSetLock,(VSCSILUN hVScsiLun, void *pvScsiLunUser, bool fLocked));
215
216 /**
217 * Eject the attached medium.
218 *
219 * @returns VBox status code.
220 * @param hVScsiLun Virtual SCSI LUN handle.
221 * @param pvScsiLunUser Opaque user data which may be used to identify the
222 * medium.
223 */
224 DECLR3CALLBACKMEMBER(int, pfnVScsiLunMediumEject, (VSCSILUN hVScsiLun, void *pvScsiLunUser));
225
226 /**
227 * Enqueue a read or write request from the medium.
228 *
229 * @returns VBox status status code.
230 * @param hVScsiLun Virtual SCSI LUN handle.
231 * @param pvScsiLunUser Opaque user data which may be used to identify the
232 * medium.
233 * @param hVScsiIoReq Virtual SCSI I/O request handle.
234 */
235 DECLR3CALLBACKMEMBER(int, pfnVScsiLunReqTransferEnqueue,(VSCSILUN hVScsiLun, void *pvScsiLunUser, VSCSIIOREQ hVScsiIoReq));
236
237 /**
238 * Returns flags of supported features.
239 *
240 * @returns VBox status status code.
241 * @param hVScsiLun Virtual SCSI LUN handle.
242 * @param pvScsiLunUser Opaque user data which may be used to identify the
243 * medium.
244 * @param pfFeatures Where to return the queried features.
245 */
246 DECLR3CALLBACKMEMBER(int, pfnVScsiLunGetFeatureFlags,(VSCSILUN hVScsiLun, void *pvScsiLunUser, uint64_t *pfFeatures));
247
248 /**
249 * Queries the vendor and product ID and revision to report for INQUIRY commands of the given LUN.
250 *
251 * @returns VBox status status code.
252 * @retval VERR_NOT_FOUND if the data is not available and some defaults should be sued instead.
253 * @param hVScsiLun Virtual SCSI LUN handle.
254 * @param pvScsiLunUser Opaque user data which may be used to identify the
255 * medium.
256 * @param ppszVendorId Where to store the pointer to the vendor ID string to report.
257 * @param ppszProductId Where to store the pointer to the product ID string to report.
258 * @param ppszProductLevel Where to store the pointer to the product level string to report.
259 */
260 DECLR3CALLBACKMEMBER(int, pfnVScsiLunQueryInqStrings, (VSCSILUN hVScsiLun, void *pvScsiLunUser, const char **ppszVendorId,
261 const char **ppszProductId, const char **ppszProductLevel));
262
263} VSCSILUNIOCALLBACKS;
264/** Pointer to a virtual SCSI LUN I/O callback table. */
265typedef VSCSILUNIOCALLBACKS *PVSCSILUNIOCALLBACKS;
266
267/**
268 * The virtual SCSI request completed callback.
269 */
270typedef DECLCALLBACK(void) FNVSCSIREQCOMPLETED(VSCSIDEVICE hVScsiDevice,
271 void *pvVScsiDeviceUser,
272 void *pvVScsiReqUser,
273 int rcScsiCode,
274 bool fRedoPossible,
275 int rcReq,
276 size_t cbXfer);
277/** Pointer to a virtual SCSI request completed callback. */
278typedef FNVSCSIREQCOMPLETED *PFNVSCSIREQCOMPLETED;
279
280/**
281 * Create a new empty SCSI device instance.
282 *
283 * @returns VBox status code.
284 * @param phVScsiDevice Where to store the SCSI device handle.
285 * @param pfnVScsiReqCompleted The method call after a request completed.
286 * @param pvVScsiDeviceUser Opaque user data given in the completion callback.
287 */
288VBOXDDU_DECL(int) VSCSIDeviceCreate(PVSCSIDEVICE phVScsiDevice,
289 PFNVSCSIREQCOMPLETED pfnVScsiReqCompleted,
290 void *pvVScsiDeviceUser);
291
292/**
293 * Destroy a SCSI device instance.
294 *
295 * @returns VBox status code.
296 * @param hVScsiDevice The SCSI device handle to destroy.
297 */
298VBOXDDU_DECL(int) VSCSIDeviceDestroy(VSCSIDEVICE hVScsiDevice);
299
300/**
301 * Attach a LUN to the SCSI device.
302 *
303 * @returns VBox status code.
304 * @param hVScsiDevice The SCSI device handle to add the LUN to.
305 * @param hVScsiLun The LUN handle to add.
306 * @param iLun The LUN number.
307 */
308VBOXDDU_DECL(int) VSCSIDeviceLunAttach(VSCSIDEVICE hVScsiDevice, VSCSILUN hVScsiLun, uint32_t iLun);
309
310/**
311 * Detach a LUN from the SCSI device.
312 *
313 * @returns VBox status code.
314 * @param hVScsiDevice The SCSI device handle to add the LUN to.
315 * @param iLun The LUN number to remove.
316 * @param phVScsiLun Where to store the detached LUN handle.
317 */
318VBOXDDU_DECL(int) VSCSIDeviceLunDetach(VSCSIDEVICE hVScsiDevice, uint32_t iLun,
319 PVSCSILUN phVScsiLun);
320
321/**
322 * Query the SCSI LUN type.
323 *
324 * @returns VBox status code.
325 * @param hVScsiDevice The SCSI device handle.
326 * @param iLun The LUN number to get.
327 * @param pEnmLunType Where to store the LUN type.
328 */
329VBOXDDU_DECL(int) VSCSIDeviceLunQueryType(VSCSIDEVICE hVScsiDevice, uint32_t iLun,
330 PVSCSILUNTYPE pEnmLunType);
331
332/**
333 * Enqueue a request to the SCSI device.
334 *
335 * @returns VBox status code.
336 * @param hVScsiDevice The SCSI device handle.
337 * @param hVScsiReq The SCSI request handle to enqueue.
338 */
339VBOXDDU_DECL(int) VSCSIDeviceReqEnqueue(VSCSIDEVICE hVScsiDevice, VSCSIREQ hVScsiReq);
340
341/**
342 * Allocate a new request handle.
343 *
344 * @returns VBox status code.
345 * @param hVScsiDevice The SCSI device handle.
346 * @param phVScsiReq Where to SCSI request handle.
347 * @param iLun The LUN the request is for.
348 * @param pbCDB The CDB for the request.
349 * @param cbCDB The size of the CDB in bytes.
350 * @param cbSGList Number of bytes the S/G list describes.
351 * @param cSGListEntries Number of S/G list entries.
352 * @param paSGList Pointer to the S/G list.
353 * @param pbSense Pointer to the sense buffer.
354 * @param cbSense Size of the sense buffer.
355 * @param pvVScsiReqUser Opqaue user data returned when the request completes.
356 */
357VBOXDDU_DECL(int) VSCSIDeviceReqCreate(VSCSIDEVICE hVScsiDevice, PVSCSIREQ phVScsiReq,
358 uint32_t iLun, uint8_t *pbCDB, size_t cbCDB,
359 size_t cbSGList, unsigned cSGListEntries,
360 PCRTSGSEG paSGList, uint8_t *pbSense,
361 size_t cbSense, void *pvVScsiReqUser);
362
363/**
364 * Create a new LUN.
365 *
366 * @returns VBox status code.
367 * @param phVScsiLun Where to store the SCSI LUN handle.
368 * @param enmLunType The Lun type.
369 * @param pVScsiLunIoCallbacks Pointer to the I/O callbacks to use for his LUN.
370 * @param pvVScsiLunUser Opaque user argument which
371 * is returned in the pvScsiLunUser parameter
372 * when the request completion callback is called.
373 */
374VBOXDDU_DECL(int) VSCSILunCreate(PVSCSILUN phVScsiLun, VSCSILUNTYPE enmLunType,
375 PVSCSILUNIOCALLBACKS pVScsiLunIoCallbacks,
376 void *pvVScsiLunUser);
377
378/**
379 * Destroy virtual SCSI LUN.
380 *
381 * @returns VBox status code.
382 * @param hVScsiLun The virtual SCSI LUN handle to destroy.
383 */
384VBOXDDU_DECL(int) VSCSILunDestroy(VSCSILUN hVScsiLun);
385
386/**
387 * Notify virtual SCSI LUN of medium being mounted.
388 *
389 * @returns VBox status code.
390 * @param hVScsiLun The virtual SCSI LUN handle to destroy.
391 */
392VBOXDDU_DECL(int) VSCSILunMountNotify(VSCSILUN hVScsiLun);
393
394/**
395 * Notify virtual SCSI LUN of medium being unmounted.
396 *
397 * @returns VBox status code.
398 * @param hVScsiLun The virtual SCSI LUN handle to destroy.
399 */
400VBOXDDU_DECL(int) VSCSILunUnmountNotify(VSCSILUN hVScsiLun);
401
402/**
403 * Notify a that a I/O request completed.
404 *
405 * @returns VBox status code.
406 * @param hVScsiIoReq The I/O request handle that completed.
407 * This is given when a I/O callback for
408 * the LUN is called by the virtual SCSI layer.
409 * @param rcIoReq The status code the I/O request completed with.
410 * @param fRedoPossible Flag whether it is possible to redo the request.
411 * If true setting any sense code will be omitted
412 * in case of an error to not alter the device state.
413 */
414VBOXDDU_DECL(int) VSCSIIoReqCompleted(VSCSIIOREQ hVScsiIoReq, int rcIoReq, bool fRedoPossible);
415
416/**
417 * Query the transfer direction of the I/O request.
418 *
419 * @returns Transfer direction.of the given I/O request
420 * @param hVScsiIoReq The SCSI I/O request handle.
421 */
422VBOXDDU_DECL(VSCSIIOREQTXDIR) VSCSIIoReqTxDirGet(VSCSIIOREQ hVScsiIoReq);
423
424/**
425 * Query I/O parameters.
426 *
427 * @returns VBox status code.
428 * @param hVScsiIoReq The SCSI I/O request handle.
429 * @param puOffset Where to store the start offset.
430 * @param pcbTransfer Where to store the amount of bytes to transfer.
431 * @param pcSeg Where to store the number of segments in the S/G list.
432 * @param pcbSeg Where to store the number of bytes the S/G list describes.
433 * @param ppaSeg Where to store the pointer to the S/G list.
434 */
435VBOXDDU_DECL(int) VSCSIIoReqParamsGet(VSCSIIOREQ hVScsiIoReq, uint64_t *puOffset,
436 size_t *pcbTransfer, unsigned *pcSeg,
437 size_t *pcbSeg, PCRTSGSEG *ppaSeg);
438
439/**
440 * Query unmap parameters.
441 *
442 * @returns VBox status code.
443 * @param hVScsiIoReq The SCSI I/O request handle.
444 * @param ppaRanges Where to store the pointer to the range array on success.
445 * @param pcRanges Where to store the number of ranges on success.
446 */
447VBOXDDU_DECL(int) VSCSIIoReqUnmapParamsGet(VSCSIIOREQ hVScsiIoReq, PCRTRANGE *ppaRanges,
448 unsigned *pcRanges);
449
450/** @} */
451RT_C_DECLS_END
452
453#endif /* ___VBox_vscsi_h */
454
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