2 * SCSI Device emulation
4 * Copyright (c) 2006 CodeSourcery.
5 * Based on code by Fabrice Bellard
7 * Written by Paul Brook
9 * 2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case
10 * when the allocation length of CDB is smaller
12 * 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
13 * MODE SENSE response.
15 * This code is licensed under the LGPL.
17 * Note that this file only handles the SCSI architecture model and device
18 * commands. Emulation of interface/link layer protocols is handled by
19 * the host adapter emulator.
22 #include "qemu/osdep.h"
23 #include "qemu/units.h"
24 #include "qapi/error.h"
25 #include "qemu/error-report.h"
26 #include "qemu/main-loop.h"
27 #include "qemu/module.h"
28 #include "hw/scsi/scsi.h"
29 #include "migration/qemu-file-types.h"
30 #include "migration/vmstate.h"
31 #include "hw/scsi/emulation.h"
32 #include "scsi/constants.h"
33 #include "sysemu/block-backend.h"
34 #include "sysemu/blockdev.h"
35 #include "hw/block/block.h"
36 #include "hw/qdev-properties.h"
37 #include "sysemu/dma.h"
38 #include "sysemu/sysemu.h"
39 #include "qemu/cutils.h"
41 #include "qom/object.h"
47 #define SCSI_WRITE_SAME_MAX (512 * KiB)
48 #define SCSI_DMA_BUF_SIZE (128 * KiB)
49 #define SCSI_MAX_INQUIRY_LEN 256
50 #define SCSI_MAX_MODE_LEN 256
52 #define DEFAULT_DISCARD_GRANULARITY (4 * KiB)
53 #define DEFAULT_MAX_UNMAP_SIZE (1 * GiB)
54 #define DEFAULT_MAX_IO_SIZE INT_MAX /* 2 GB - 1 block */
56 #define TYPE_SCSI_DISK_BASE "scsi-disk-base"
58 OBJECT_DECLARE_TYPE(SCSIDiskState
, SCSIDiskClass
, SCSI_DISK_BASE
)
60 struct SCSIDiskClass
{
61 SCSIDeviceClass parent_class
;
63 DMAIOFunc
*dma_writev
;
64 bool (*need_fua_emulation
)(SCSICommand
*cmd
);
65 void (*update_sense
)(SCSIRequest
*r
);
68 typedef struct SCSIDiskReq
{
70 /* Both sector and sector_count are in terms of BDRV_SECTOR_SIZE bytes. */
72 uint32_t sector_count
;
75 bool need_fua_emulation
;
79 unsigned char *status
;
82 #define SCSI_DISK_F_REMOVABLE 0
83 #define SCSI_DISK_F_DPOFUA 1
84 #define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
86 struct SCSIDiskState
{
93 uint64_t max_unmap_size
;
104 * 0x0000 - rotation rate not reported
105 * 0x0001 - non-rotating medium (SSD)
106 * 0x0002-0x0400 - reserved
107 * 0x0401-0xffe - rotations per minute
110 uint16_t rotation_rate
;
113 static bool scsi_handle_rw_error(SCSIDiskReq
*r
, int error
, bool acct_failed
);
115 static void scsi_free_request(SCSIRequest
*req
)
117 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
119 qemu_vfree(r
->iov
.iov_base
);
122 /* Helper function for command completion with sense. */
123 static void scsi_check_condition(SCSIDiskReq
*r
, SCSISense sense
)
125 trace_scsi_disk_check_condition(r
->req
.tag
, sense
.key
, sense
.asc
,
127 scsi_req_build_sense(&r
->req
, sense
);
128 scsi_req_complete(&r
->req
, CHECK_CONDITION
);
131 static void scsi_init_iovec(SCSIDiskReq
*r
, size_t size
)
133 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
135 if (!r
->iov
.iov_base
) {
137 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
139 r
->iov
.iov_len
= MIN(r
->sector_count
* BDRV_SECTOR_SIZE
, r
->buflen
);
140 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
143 static void scsi_disk_save_request(QEMUFile
*f
, SCSIRequest
*req
)
145 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
147 qemu_put_be64s(f
, &r
->sector
);
148 qemu_put_be32s(f
, &r
->sector_count
);
149 qemu_put_be32s(f
, &r
->buflen
);
151 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
152 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
153 } else if (!req
->retry
) {
154 uint32_t len
= r
->iov
.iov_len
;
155 qemu_put_be32s(f
, &len
);
156 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
161 static void scsi_disk_load_request(QEMUFile
*f
, SCSIRequest
*req
)
163 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
165 qemu_get_be64s(f
, &r
->sector
);
166 qemu_get_be32s(f
, &r
->sector_count
);
167 qemu_get_be32s(f
, &r
->buflen
);
169 scsi_init_iovec(r
, r
->buflen
);
170 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
171 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
172 } else if (!r
->req
.retry
) {
174 qemu_get_be32s(f
, &len
);
175 r
->iov
.iov_len
= len
;
176 assert(r
->iov
.iov_len
<= r
->buflen
);
177 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
181 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
184 static bool scsi_disk_req_check_error(SCSIDiskReq
*r
, int ret
, bool acct_failed
)
186 if (r
->req
.io_canceled
) {
187 scsi_req_cancel_complete(&r
->req
);
191 if (ret
< 0 || (r
->status
&& *r
->status
)) {
192 return scsi_handle_rw_error(r
, -ret
, acct_failed
);
198 static void scsi_aio_complete(void *opaque
, int ret
)
200 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
201 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
203 assert(r
->req
.aiocb
!= NULL
);
205 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
206 if (scsi_disk_req_check_error(r
, ret
, true)) {
210 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
211 scsi_req_complete(&r
->req
, GOOD
);
214 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
215 scsi_req_unref(&r
->req
);
218 static bool scsi_is_cmd_fua(SCSICommand
*cmd
)
220 switch (cmd
->buf
[0]) {
227 return (cmd
->buf
[1] & 8) != 0;
232 case WRITE_VERIFY_10
:
233 case WRITE_VERIFY_12
:
234 case WRITE_VERIFY_16
:
244 static void scsi_write_do_fua(SCSIDiskReq
*r
)
246 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
248 assert(r
->req
.aiocb
== NULL
);
249 assert(!r
->req
.io_canceled
);
251 if (r
->need_fua_emulation
) {
252 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
254 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
258 scsi_req_complete(&r
->req
, GOOD
);
259 scsi_req_unref(&r
->req
);
262 static void scsi_dma_complete_noio(SCSIDiskReq
*r
, int ret
)
264 assert(r
->req
.aiocb
== NULL
);
265 if (scsi_disk_req_check_error(r
, ret
, false)) {
269 r
->sector
+= r
->sector_count
;
271 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
272 scsi_write_do_fua(r
);
275 scsi_req_complete(&r
->req
, GOOD
);
279 scsi_req_unref(&r
->req
);
282 static void scsi_dma_complete(void *opaque
, int ret
)
284 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
285 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
287 assert(r
->req
.aiocb
!= NULL
);
290 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
292 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
294 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
296 scsi_dma_complete_noio(r
, ret
);
297 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
300 static void scsi_read_complete_noio(SCSIDiskReq
*r
, int ret
)
304 assert(r
->req
.aiocb
== NULL
);
305 if (scsi_disk_req_check_error(r
, ret
, false)) {
309 n
= r
->qiov
.size
/ BDRV_SECTOR_SIZE
;
311 r
->sector_count
-= n
;
312 scsi_req_data(&r
->req
, r
->qiov
.size
);
315 scsi_req_unref(&r
->req
);
318 static void scsi_read_complete(void *opaque
, int ret
)
320 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
321 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
323 assert(r
->req
.aiocb
!= NULL
);
326 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
328 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
330 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
331 trace_scsi_disk_read_complete(r
->req
.tag
, r
->qiov
.size
);
333 scsi_read_complete_noio(r
, ret
);
334 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
337 /* Actually issue a read to the block device. */
338 static void scsi_do_read(SCSIDiskReq
*r
, int ret
)
340 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
341 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
343 assert (r
->req
.aiocb
== NULL
);
344 if (scsi_disk_req_check_error(r
, ret
, false)) {
348 /* The request is used as the AIO opaque value, so add a ref. */
349 scsi_req_ref(&r
->req
);
352 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_READ
);
353 r
->req
.resid
-= r
->req
.sg
->size
;
354 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
355 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
357 sdc
->dma_readv
, r
, scsi_dma_complete
, r
,
358 DMA_DIRECTION_FROM_DEVICE
);
360 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
361 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
362 r
->qiov
.size
, BLOCK_ACCT_READ
);
363 r
->req
.aiocb
= sdc
->dma_readv(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
364 scsi_read_complete
, r
, r
);
368 scsi_req_unref(&r
->req
);
371 static void scsi_do_read_cb(void *opaque
, int ret
)
373 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
374 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
376 assert (r
->req
.aiocb
!= NULL
);
379 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
381 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
383 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
385 scsi_do_read(opaque
, ret
);
386 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
389 /* Read more data from scsi device into buffer. */
390 static void scsi_read_data(SCSIRequest
*req
)
392 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
393 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
396 trace_scsi_disk_read_data_count(r
->sector_count
);
397 if (r
->sector_count
== 0) {
398 /* This also clears the sense buffer for REQUEST SENSE. */
399 scsi_req_complete(&r
->req
, GOOD
);
403 /* No data transfer may already be in progress */
404 assert(r
->req
.aiocb
== NULL
);
406 /* The request is used as the AIO opaque value, so add a ref. */
407 scsi_req_ref(&r
->req
);
408 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
409 trace_scsi_disk_read_data_invalid();
410 scsi_read_complete_noio(r
, -EINVAL
);
414 if (!blk_is_available(req
->dev
->conf
.blk
)) {
415 scsi_read_complete_noio(r
, -ENOMEDIUM
);
421 if (first
&& r
->need_fua_emulation
) {
422 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
424 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_do_read_cb
, r
);
431 * scsi_handle_rw_error has two return values. False means that the error
432 * must be ignored, true means that the error has been processed and the
433 * caller should not do anything else for this request. Note that
434 * scsi_handle_rw_error always manages its reference counts, independent
435 * of the return value.
437 static bool scsi_handle_rw_error(SCSIDiskReq
*r
, int error
, bool acct_failed
)
439 bool is_read
= (r
->req
.cmd
.mode
== SCSI_XFER_FROM_DEV
);
440 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
441 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
442 BlockErrorAction action
= blk_get_error_action(s
->qdev
.conf
.blk
,
445 if (action
== BLOCK_ERROR_ACTION_REPORT
) {
447 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
451 /* A passthrough command has run and has produced sense data; check
452 * whether the error has to be handled by the guest or should rather
455 assert(r
->status
&& *r
->status
);
456 if (scsi_sense_buf_is_guest_recoverable(r
->req
.sense
, sizeof(r
->req
.sense
))) {
457 /* These errors are handled by guest. */
458 sdc
->update_sense(&r
->req
);
459 scsi_req_complete(&r
->req
, *r
->status
);
462 error
= scsi_sense_buf_to_errno(r
->req
.sense
, sizeof(r
->req
.sense
));
465 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
468 scsi_check_condition(r
, SENSE_CODE(TARGET_FAILURE
));
471 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
474 scsi_check_condition(r
, SENSE_CODE(SPACE_ALLOC_FAILED
));
477 scsi_check_condition(r
, SENSE_CODE(IO_ERROR
));
482 blk_error_action(s
->qdev
.conf
.blk
, action
, is_read
, error
);
483 if (action
== BLOCK_ERROR_ACTION_IGNORE
) {
484 scsi_req_complete(&r
->req
, 0);
488 if (action
== BLOCK_ERROR_ACTION_STOP
) {
489 scsi_req_retry(&r
->req
);
494 static void scsi_write_complete_noio(SCSIDiskReq
*r
, int ret
)
498 assert (r
->req
.aiocb
== NULL
);
499 if (scsi_disk_req_check_error(r
, ret
, false)) {
503 n
= r
->qiov
.size
/ BDRV_SECTOR_SIZE
;
505 r
->sector_count
-= n
;
506 if (r
->sector_count
== 0) {
507 scsi_write_do_fua(r
);
510 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
511 trace_scsi_disk_write_complete_noio(r
->req
.tag
, r
->qiov
.size
);
512 scsi_req_data(&r
->req
, r
->qiov
.size
);
516 scsi_req_unref(&r
->req
);
519 static void scsi_write_complete(void * opaque
, int ret
)
521 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
522 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
524 assert (r
->req
.aiocb
!= NULL
);
527 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
529 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
531 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
533 scsi_write_complete_noio(r
, ret
);
534 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
537 static void scsi_write_data(SCSIRequest
*req
)
539 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
540 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
541 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
543 /* No data transfer may already be in progress */
544 assert(r
->req
.aiocb
== NULL
);
546 /* The request is used as the AIO opaque value, so add a ref. */
547 scsi_req_ref(&r
->req
);
548 if (r
->req
.cmd
.mode
!= SCSI_XFER_TO_DEV
) {
549 trace_scsi_disk_write_data_invalid();
550 scsi_write_complete_noio(r
, -EINVAL
);
554 if (!r
->req
.sg
&& !r
->qiov
.size
) {
555 /* Called for the first time. Ask the driver to send us more data. */
557 scsi_write_complete_noio(r
, 0);
560 if (!blk_is_available(req
->dev
->conf
.blk
)) {
561 scsi_write_complete_noio(r
, -ENOMEDIUM
);
565 if (r
->req
.cmd
.buf
[0] == VERIFY_10
|| r
->req
.cmd
.buf
[0] == VERIFY_12
||
566 r
->req
.cmd
.buf
[0] == VERIFY_16
) {
568 scsi_dma_complete_noio(r
, 0);
570 scsi_write_complete_noio(r
, 0);
576 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_WRITE
);
577 r
->req
.resid
-= r
->req
.sg
->size
;
578 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
579 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
581 sdc
->dma_writev
, r
, scsi_dma_complete
, r
,
582 DMA_DIRECTION_TO_DEVICE
);
584 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
585 r
->qiov
.size
, BLOCK_ACCT_WRITE
);
586 r
->req
.aiocb
= sdc
->dma_writev(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
587 scsi_write_complete
, r
, r
);
591 /* Return a pointer to the data buffer. */
592 static uint8_t *scsi_get_buf(SCSIRequest
*req
)
594 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
596 return (uint8_t *)r
->iov
.iov_base
;
599 static int scsi_disk_emulate_vpd_page(SCSIRequest
*req
, uint8_t *outbuf
)
601 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
602 uint8_t page_code
= req
->cmd
.buf
[2];
603 int start
, buflen
= 0;
605 outbuf
[buflen
++] = s
->qdev
.type
& 0x1f;
606 outbuf
[buflen
++] = page_code
;
607 outbuf
[buflen
++] = 0x00;
608 outbuf
[buflen
++] = 0x00;
612 case 0x00: /* Supported page codes, mandatory */
614 trace_scsi_disk_emulate_vpd_page_00(req
->cmd
.xfer
);
615 outbuf
[buflen
++] = 0x00; /* list of supported pages (this page) */
617 outbuf
[buflen
++] = 0x80; /* unit serial number */
619 outbuf
[buflen
++] = 0x83; /* device identification */
620 if (s
->qdev
.type
== TYPE_DISK
) {
621 outbuf
[buflen
++] = 0xb0; /* block limits */
622 outbuf
[buflen
++] = 0xb1; /* block device characteristics */
623 outbuf
[buflen
++] = 0xb2; /* thin provisioning */
627 case 0x80: /* Device serial number, optional */
632 trace_scsi_disk_emulate_vpd_page_80_not_supported();
636 l
= strlen(s
->serial
);
641 trace_scsi_disk_emulate_vpd_page_80(req
->cmd
.xfer
);
642 memcpy(outbuf
+ buflen
, s
->serial
, l
);
647 case 0x83: /* Device identification page, mandatory */
649 int id_len
= s
->device_id
? MIN(strlen(s
->device_id
), 255 - 8) : 0;
651 trace_scsi_disk_emulate_vpd_page_83(req
->cmd
.xfer
);
654 outbuf
[buflen
++] = 0x2; /* ASCII */
655 outbuf
[buflen
++] = 0; /* not officially assigned */
656 outbuf
[buflen
++] = 0; /* reserved */
657 outbuf
[buflen
++] = id_len
; /* length of data following */
658 memcpy(outbuf
+ buflen
, s
->device_id
, id_len
);
663 outbuf
[buflen
++] = 0x1; /* Binary */
664 outbuf
[buflen
++] = 0x3; /* NAA */
665 outbuf
[buflen
++] = 0; /* reserved */
666 outbuf
[buflen
++] = 8;
667 stq_be_p(&outbuf
[buflen
], s
->qdev
.wwn
);
671 if (s
->qdev
.port_wwn
) {
672 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
673 outbuf
[buflen
++] = 0x93; /* PIV / Target port / NAA */
674 outbuf
[buflen
++] = 0; /* reserved */
675 outbuf
[buflen
++] = 8;
676 stq_be_p(&outbuf
[buflen
], s
->qdev
.port_wwn
);
681 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
683 /* PIV/Target port/relative target port */
684 outbuf
[buflen
++] = 0x94;
686 outbuf
[buflen
++] = 0; /* reserved */
687 outbuf
[buflen
++] = 4;
688 stw_be_p(&outbuf
[buflen
+ 2], s
->port_index
);
693 case 0xb0: /* block limits */
695 SCSIBlockLimits bl
= {};
697 if (s
->qdev
.type
== TYPE_ROM
) {
698 trace_scsi_disk_emulate_vpd_page_b0_not_supported();
703 s
->qdev
.conf
.discard_granularity
/ s
->qdev
.blocksize
;
705 s
->qdev
.conf
.min_io_size
/ s
->qdev
.blocksize
;
707 s
->qdev
.conf
.opt_io_size
/ s
->qdev
.blocksize
;
708 bl
.max_unmap_sectors
=
709 s
->max_unmap_size
/ s
->qdev
.blocksize
;
711 s
->max_io_size
/ s
->qdev
.blocksize
;
712 /* 255 descriptors fit in 4 KiB with an 8-byte header */
713 bl
.max_unmap_descr
= 255;
715 if (s
->qdev
.type
== TYPE_DISK
) {
716 int max_transfer_blk
= blk_get_max_transfer(s
->qdev
.conf
.blk
);
717 int max_io_sectors_blk
=
718 max_transfer_blk
/ s
->qdev
.blocksize
;
721 MIN_NON_ZERO(max_io_sectors_blk
, bl
.max_io_sectors
);
723 buflen
+= scsi_emulate_block_limits(outbuf
+ buflen
, &bl
);
726 case 0xb1: /* block device characteristics */
729 outbuf
[4] = (s
->rotation_rate
>> 8) & 0xff;
730 outbuf
[5] = s
->rotation_rate
& 0xff;
731 outbuf
[6] = 0; /* PRODUCT TYPE */
732 outbuf
[7] = 0; /* WABEREQ | WACEREQ | NOMINAL FORM FACTOR */
733 outbuf
[8] = 0; /* VBULS */
736 case 0xb2: /* thin provisioning */
740 outbuf
[5] = 0xe0; /* unmap & write_same 10/16 all supported */
741 outbuf
[6] = s
->qdev
.conf
.discard_granularity
? 2 : 1;
749 assert(buflen
- start
<= 255);
750 outbuf
[start
- 1] = buflen
- start
;
754 static int scsi_disk_emulate_inquiry(SCSIRequest
*req
, uint8_t *outbuf
)
756 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
759 if (req
->cmd
.buf
[1] & 0x1) {
760 /* Vital product data */
761 return scsi_disk_emulate_vpd_page(req
, outbuf
);
764 /* Standard INQUIRY data */
765 if (req
->cmd
.buf
[2] != 0) {
770 buflen
= req
->cmd
.xfer
;
771 if (buflen
> SCSI_MAX_INQUIRY_LEN
) {
772 buflen
= SCSI_MAX_INQUIRY_LEN
;
775 outbuf
[0] = s
->qdev
.type
& 0x1f;
776 outbuf
[1] = (s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) ? 0x80 : 0;
778 strpadcpy((char *) &outbuf
[16], 16, s
->product
, ' ');
779 strpadcpy((char *) &outbuf
[8], 8, s
->vendor
, ' ');
781 memset(&outbuf
[32], 0, 4);
782 memcpy(&outbuf
[32], s
->version
, MIN(4, strlen(s
->version
)));
784 * We claim conformance to SPC-3, which is required for guests
785 * to ask for modern features like READ CAPACITY(16) or the
786 * block characteristics VPD page by default. Not all of SPC-3
787 * is actually implemented, but we're good enough.
789 outbuf
[2] = s
->qdev
.default_scsi_version
;
790 outbuf
[3] = 2 | 0x10; /* Format 2, HiSup */
793 outbuf
[4] = buflen
- 5; /* Additional Length = (Len - 1) - 4 */
795 /* If the allocation length of CDB is too small,
796 the additional length is not adjusted */
800 /* Sync data transfer and TCQ. */
801 outbuf
[7] = 0x10 | (req
->bus
->info
->tcq
? 0x02 : 0);
805 static inline bool media_is_dvd(SCSIDiskState
*s
)
808 if (s
->qdev
.type
!= TYPE_ROM
) {
811 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
814 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
815 return nb_sectors
> CD_MAX_SECTORS
;
818 static inline bool media_is_cd(SCSIDiskState
*s
)
821 if (s
->qdev
.type
!= TYPE_ROM
) {
824 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
827 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
828 return nb_sectors
<= CD_MAX_SECTORS
;
831 static int scsi_read_disc_information(SCSIDiskState
*s
, SCSIDiskReq
*r
,
834 uint8_t type
= r
->req
.cmd
.buf
[1] & 7;
836 if (s
->qdev
.type
!= TYPE_ROM
) {
840 /* Types 1/2 are only defined for Blu-Ray. */
842 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
846 memset(outbuf
, 0, 34);
848 outbuf
[2] = 0xe; /* last session complete, disc finalized */
849 outbuf
[3] = 1; /* first track on disc */
850 outbuf
[4] = 1; /* # of sessions */
851 outbuf
[5] = 1; /* first track of last session */
852 outbuf
[6] = 1; /* last track of last session */
853 outbuf
[7] = 0x20; /* unrestricted use */
854 outbuf
[8] = 0x00; /* CD-ROM or DVD-ROM */
855 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
856 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
857 /* 24-31: disc bar code */
858 /* 32: disc application code */
859 /* 33: number of OPC tables */
864 static int scsi_read_dvd_structure(SCSIDiskState
*s
, SCSIDiskReq
*r
,
867 static const int rds_caps_size
[5] = {
874 uint8_t media
= r
->req
.cmd
.buf
[1];
875 uint8_t layer
= r
->req
.cmd
.buf
[6];
876 uint8_t format
= r
->req
.cmd
.buf
[7];
879 if (s
->qdev
.type
!= TYPE_ROM
) {
883 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
887 if (format
!= 0xff) {
888 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
889 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
892 if (media_is_cd(s
)) {
893 scsi_check_condition(r
, SENSE_CODE(INCOMPATIBLE_FORMAT
));
896 if (format
>= ARRAY_SIZE(rds_caps_size
)) {
899 size
= rds_caps_size
[format
];
900 memset(outbuf
, 0, size
);
905 /* Physical format information */
910 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
912 outbuf
[4] = 1; /* DVD-ROM, part version 1 */
913 outbuf
[5] = 0xf; /* 120mm disc, minimum rate unspecified */
914 outbuf
[6] = 1; /* one layer, read-only (per MMC-2 spec) */
915 outbuf
[7] = 0; /* default densities */
917 stl_be_p(&outbuf
[12], (nb_sectors
>> 2) - 1); /* end sector */
918 stl_be_p(&outbuf
[16], (nb_sectors
>> 2) - 1); /* l0 end sector */
922 case 0x01: /* DVD copyright information, all zeros */
925 case 0x03: /* BCA information - invalid field for no BCA info */
928 case 0x04: /* DVD disc manufacturing information, all zeros */
931 case 0xff: { /* List capabilities */
934 for (i
= 0; i
< ARRAY_SIZE(rds_caps_size
); i
++) {
935 if (!rds_caps_size
[i
]) {
939 outbuf
[size
+ 1] = 0x40; /* Not writable, readable */
940 stw_be_p(&outbuf
[size
+ 2], rds_caps_size
[i
]);
950 /* Size of buffer, not including 2 byte size field */
951 stw_be_p(outbuf
, size
- 2);
958 static int scsi_event_status_media(SCSIDiskState
*s
, uint8_t *outbuf
)
960 uint8_t event_code
, media_status
;
964 media_status
= MS_TRAY_OPEN
;
965 } else if (blk_is_inserted(s
->qdev
.conf
.blk
)) {
966 media_status
= MS_MEDIA_PRESENT
;
969 /* Event notification descriptor */
970 event_code
= MEC_NO_CHANGE
;
971 if (media_status
!= MS_TRAY_OPEN
) {
972 if (s
->media_event
) {
973 event_code
= MEC_NEW_MEDIA
;
974 s
->media_event
= false;
975 } else if (s
->eject_request
) {
976 event_code
= MEC_EJECT_REQUESTED
;
977 s
->eject_request
= false;
981 outbuf
[0] = event_code
;
982 outbuf
[1] = media_status
;
984 /* These fields are reserved, just clear them. */
990 static int scsi_get_event_status_notification(SCSIDiskState
*s
, SCSIDiskReq
*r
,
994 uint8_t *buf
= r
->req
.cmd
.buf
;
995 uint8_t notification_class_request
= buf
[4];
996 if (s
->qdev
.type
!= TYPE_ROM
) {
999 if ((buf
[1] & 1) == 0) {
1005 outbuf
[0] = outbuf
[1] = 0;
1006 outbuf
[3] = 1 << GESN_MEDIA
; /* supported events */
1007 if (notification_class_request
& (1 << GESN_MEDIA
)) {
1008 outbuf
[2] = GESN_MEDIA
;
1009 size
+= scsi_event_status_media(s
, &outbuf
[size
]);
1013 stw_be_p(outbuf
, size
- 4);
1017 static int scsi_get_configuration(SCSIDiskState
*s
, uint8_t *outbuf
)
1021 if (s
->qdev
.type
!= TYPE_ROM
) {
1025 if (media_is_dvd(s
)) {
1026 current
= MMC_PROFILE_DVD_ROM
;
1027 } else if (media_is_cd(s
)) {
1028 current
= MMC_PROFILE_CD_ROM
;
1030 current
= MMC_PROFILE_NONE
;
1033 memset(outbuf
, 0, 40);
1034 stl_be_p(&outbuf
[0], 36); /* Bytes after the data length field */
1035 stw_be_p(&outbuf
[6], current
);
1036 /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
1037 outbuf
[10] = 0x03; /* persistent, current */
1038 outbuf
[11] = 8; /* two profiles */
1039 stw_be_p(&outbuf
[12], MMC_PROFILE_DVD_ROM
);
1040 outbuf
[14] = (current
== MMC_PROFILE_DVD_ROM
);
1041 stw_be_p(&outbuf
[16], MMC_PROFILE_CD_ROM
);
1042 outbuf
[18] = (current
== MMC_PROFILE_CD_ROM
);
1043 /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
1044 stw_be_p(&outbuf
[20], 1);
1045 outbuf
[22] = 0x08 | 0x03; /* version 2, persistent, current */
1047 stl_be_p(&outbuf
[24], 1); /* SCSI */
1048 outbuf
[28] = 1; /* DBE = 1, mandatory */
1049 /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
1050 stw_be_p(&outbuf
[32], 3);
1051 outbuf
[34] = 0x08 | 0x03; /* version 2, persistent, current */
1053 outbuf
[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
1054 /* TODO: Random readable, CD read, DVD read, drive serial number,
1059 static int scsi_emulate_mechanism_status(SCSIDiskState
*s
, uint8_t *outbuf
)
1061 if (s
->qdev
.type
!= TYPE_ROM
) {
1064 memset(outbuf
, 0, 8);
1065 outbuf
[5] = 1; /* CD-ROM */
1069 static int mode_sense_page(SCSIDiskState
*s
, int page
, uint8_t **p_outbuf
,
1072 static const int mode_sense_valid
[0x3f] = {
1073 [MODE_PAGE_HD_GEOMETRY
] = (1 << TYPE_DISK
),
1074 [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
] = (1 << TYPE_DISK
),
1075 [MODE_PAGE_CACHING
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1076 [MODE_PAGE_R_W_ERROR
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1077 [MODE_PAGE_AUDIO_CTL
] = (1 << TYPE_ROM
),
1078 [MODE_PAGE_CAPABILITIES
] = (1 << TYPE_ROM
),
1081 uint8_t *p
= *p_outbuf
+ 2;
1084 if ((mode_sense_valid
[page
] & (1 << s
->qdev
.type
)) == 0) {
1089 * If Changeable Values are requested, a mask denoting those mode parameters
1090 * that are changeable shall be returned. As we currently don't support
1091 * parameter changes via MODE_SELECT all bits are returned set to zero.
1092 * The buffer was already menset to zero by the caller of this function.
1094 * The offsets here are off by two compared to the descriptions in the
1095 * SCSI specs, because those include a 2-byte header. This is unfortunate,
1096 * but it is done so that offsets are consistent within our implementation
1097 * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
1098 * 2-byte and 4-byte headers.
1101 case MODE_PAGE_HD_GEOMETRY
:
1103 if (page_control
== 1) { /* Changeable Values */
1106 /* if a geometry hint is available, use it */
1107 p
[0] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1108 p
[1] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1109 p
[2] = s
->qdev
.conf
.cyls
& 0xff;
1110 p
[3] = s
->qdev
.conf
.heads
& 0xff;
1111 /* Write precomp start cylinder, disabled */
1112 p
[4] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1113 p
[5] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1114 p
[6] = s
->qdev
.conf
.cyls
& 0xff;
1115 /* Reduced current start cylinder, disabled */
1116 p
[7] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1117 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1118 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1119 /* Device step rate [ns], 200ns */
1122 /* Landing zone cylinder */
1126 /* Medium rotation rate [rpm], 5400 rpm */
1127 p
[18] = (5400 >> 8) & 0xff;
1128 p
[19] = 5400 & 0xff;
1131 case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
:
1133 if (page_control
== 1) { /* Changeable Values */
1136 /* Transfer rate [kbit/s], 5Mbit/s */
1139 /* if a geometry hint is available, use it */
1140 p
[2] = s
->qdev
.conf
.heads
& 0xff;
1141 p
[3] = s
->qdev
.conf
.secs
& 0xff;
1142 p
[4] = s
->qdev
.blocksize
>> 8;
1143 p
[6] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1144 p
[7] = s
->qdev
.conf
.cyls
& 0xff;
1145 /* Write precomp start cylinder, disabled */
1146 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1147 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1148 /* Reduced current start cylinder, disabled */
1149 p
[10] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1150 p
[11] = s
->qdev
.conf
.cyls
& 0xff;
1151 /* Device step rate [100us], 100us */
1154 /* Device step pulse width [us], 1us */
1156 /* Device head settle delay [100us], 100us */
1159 /* Motor on delay [0.1s], 0.1s */
1161 /* Motor off delay [0.1s], 0.1s */
1163 /* Medium rotation rate [rpm], 5400 rpm */
1164 p
[26] = (5400 >> 8) & 0xff;
1165 p
[27] = 5400 & 0xff;
1168 case MODE_PAGE_CACHING
:
1170 if (page_control
== 1 || /* Changeable Values */
1171 blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1176 case MODE_PAGE_R_W_ERROR
:
1178 if (page_control
== 1) { /* Changeable Values */
1181 p
[0] = 0x80; /* Automatic Write Reallocation Enabled */
1182 if (s
->qdev
.type
== TYPE_ROM
) {
1183 p
[1] = 0x20; /* Read Retry Count */
1187 case MODE_PAGE_AUDIO_CTL
:
1191 case MODE_PAGE_CAPABILITIES
:
1193 if (page_control
== 1) { /* Changeable Values */
1197 p
[0] = 0x3b; /* CD-R & CD-RW read */
1198 p
[1] = 0; /* Writing not supported */
1199 p
[2] = 0x7f; /* Audio, composite, digital out,
1200 mode 2 form 1&2, multi session */
1201 p
[3] = 0xff; /* CD DA, DA accurate, RW supported,
1202 RW corrected, C2 errors, ISRC,
1204 p
[4] = 0x2d | (s
->tray_locked
? 2 : 0);
1205 /* Locking supported, jumper present, eject, tray */
1206 p
[5] = 0; /* no volume & mute control, no
1208 p
[6] = (50 * 176) >> 8; /* 50x read speed */
1209 p
[7] = (50 * 176) & 0xff;
1210 p
[8] = 2 >> 8; /* Two volume levels */
1212 p
[10] = 2048 >> 8; /* 2M buffer */
1213 p
[11] = 2048 & 0xff;
1214 p
[12] = (16 * 176) >> 8; /* 16x read speed current */
1215 p
[13] = (16 * 176) & 0xff;
1216 p
[16] = (16 * 176) >> 8; /* 16x write speed */
1217 p
[17] = (16 * 176) & 0xff;
1218 p
[18] = (16 * 176) >> 8; /* 16x write speed current */
1219 p
[19] = (16 * 176) & 0xff;
1226 assert(length
< 256);
1227 (*p_outbuf
)[0] = page
;
1228 (*p_outbuf
)[1] = length
;
1229 *p_outbuf
+= length
+ 2;
1233 static int scsi_disk_emulate_mode_sense(SCSIDiskReq
*r
, uint8_t *outbuf
)
1235 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1236 uint64_t nb_sectors
;
1238 int page
, buflen
, ret
, page_control
;
1240 uint8_t dev_specific_param
;
1242 dbd
= (r
->req
.cmd
.buf
[1] & 0x8) != 0;
1243 page
= r
->req
.cmd
.buf
[2] & 0x3f;
1244 page_control
= (r
->req
.cmd
.buf
[2] & 0xc0) >> 6;
1246 trace_scsi_disk_emulate_mode_sense((r
->req
.cmd
.buf
[0] == MODE_SENSE
) ? 6 :
1247 10, page
, r
->req
.cmd
.xfer
, page_control
);
1248 memset(outbuf
, 0, r
->req
.cmd
.xfer
);
1251 if (s
->qdev
.type
== TYPE_DISK
) {
1252 dev_specific_param
= s
->features
& (1 << SCSI_DISK_F_DPOFUA
) ? 0x10 : 0;
1253 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1254 dev_specific_param
|= 0x80; /* Readonly. */
1257 /* MMC prescribes that CD/DVD drives have no block descriptors,
1258 * and defines no device-specific parameter. */
1259 dev_specific_param
= 0x00;
1263 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1264 p
[1] = 0; /* Default media type. */
1265 p
[2] = dev_specific_param
;
1266 p
[3] = 0; /* Block descriptor length. */
1268 } else { /* MODE_SENSE_10 */
1269 p
[2] = 0; /* Default media type. */
1270 p
[3] = dev_specific_param
;
1271 p
[6] = p
[7] = 0; /* Block descriptor length. */
1275 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1276 if (!dbd
&& nb_sectors
) {
1277 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1278 outbuf
[3] = 8; /* Block descriptor length */
1279 } else { /* MODE_SENSE_10 */
1280 outbuf
[7] = 8; /* Block descriptor length */
1282 nb_sectors
/= (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1283 if (nb_sectors
> 0xffffff) {
1286 p
[0] = 0; /* media density code */
1287 p
[1] = (nb_sectors
>> 16) & 0xff;
1288 p
[2] = (nb_sectors
>> 8) & 0xff;
1289 p
[3] = nb_sectors
& 0xff;
1290 p
[4] = 0; /* reserved */
1291 p
[5] = 0; /* bytes 5-7 are the sector size in bytes */
1292 p
[6] = s
->qdev
.blocksize
>> 8;
1297 if (page_control
== 3) {
1299 scsi_check_condition(r
, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED
));
1304 for (page
= 0; page
<= 0x3e; page
++) {
1305 mode_sense_page(s
, page
, &p
, page_control
);
1308 ret
= mode_sense_page(s
, page
, &p
, page_control
);
1314 buflen
= p
- outbuf
;
1316 * The mode data length field specifies the length in bytes of the
1317 * following data that is available to be transferred. The mode data
1318 * length does not include itself.
1320 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1321 outbuf
[0] = buflen
- 1;
1322 } else { /* MODE_SENSE_10 */
1323 outbuf
[0] = ((buflen
- 2) >> 8) & 0xff;
1324 outbuf
[1] = (buflen
- 2) & 0xff;
1329 static int scsi_disk_emulate_read_toc(SCSIRequest
*req
, uint8_t *outbuf
)
1331 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1332 int start_track
, format
, msf
, toclen
;
1333 uint64_t nb_sectors
;
1335 msf
= req
->cmd
.buf
[1] & 2;
1336 format
= req
->cmd
.buf
[2] & 0xf;
1337 start_track
= req
->cmd
.buf
[6];
1338 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1339 trace_scsi_disk_emulate_read_toc(start_track
, format
, msf
>> 1);
1340 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
1343 toclen
= cdrom_read_toc(nb_sectors
, outbuf
, msf
, start_track
);
1346 /* multi session : only a single session defined */
1348 memset(outbuf
, 0, 12);
1354 toclen
= cdrom_read_toc_raw(nb_sectors
, outbuf
, msf
, start_track
);
1362 static int scsi_disk_emulate_start_stop(SCSIDiskReq
*r
)
1364 SCSIRequest
*req
= &r
->req
;
1365 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1366 bool start
= req
->cmd
.buf
[4] & 1;
1367 bool loej
= req
->cmd
.buf
[4] & 2; /* load on start, eject on !start */
1368 int pwrcnd
= req
->cmd
.buf
[4] & 0xf0;
1371 /* eject/load only happens for power condition == 0 */
1375 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) && loej
) {
1376 if (!start
&& !s
->tray_open
&& s
->tray_locked
) {
1377 scsi_check_condition(r
,
1378 blk_is_inserted(s
->qdev
.conf
.blk
)
1379 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED
)
1380 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED
));
1384 if (s
->tray_open
!= !start
) {
1385 blk_eject(s
->qdev
.conf
.blk
, !start
);
1386 s
->tray_open
= !start
;
1392 static void scsi_disk_emulate_read_data(SCSIRequest
*req
)
1394 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1395 int buflen
= r
->iov
.iov_len
;
1398 trace_scsi_disk_emulate_read_data(buflen
);
1401 scsi_req_data(&r
->req
, buflen
);
1405 /* This also clears the sense buffer for REQUEST SENSE. */
1406 scsi_req_complete(&r
->req
, GOOD
);
1409 static int scsi_disk_check_mode_select(SCSIDiskState
*s
, int page
,
1410 uint8_t *inbuf
, int inlen
)
1412 uint8_t mode_current
[SCSI_MAX_MODE_LEN
];
1413 uint8_t mode_changeable
[SCSI_MAX_MODE_LEN
];
1415 int len
, expected_len
, changeable_len
, i
;
1417 /* The input buffer does not include the page header, so it is
1420 expected_len
= inlen
+ 2;
1421 if (expected_len
> SCSI_MAX_MODE_LEN
) {
1426 memset(mode_current
, 0, inlen
+ 2);
1427 len
= mode_sense_page(s
, page
, &p
, 0);
1428 if (len
< 0 || len
!= expected_len
) {
1432 p
= mode_changeable
;
1433 memset(mode_changeable
, 0, inlen
+ 2);
1434 changeable_len
= mode_sense_page(s
, page
, &p
, 1);
1435 assert(changeable_len
== len
);
1437 /* Check that unchangeable bits are the same as what MODE SENSE
1440 for (i
= 2; i
< len
; i
++) {
1441 if (((mode_current
[i
] ^ inbuf
[i
- 2]) & ~mode_changeable
[i
]) != 0) {
1448 static void scsi_disk_apply_mode_select(SCSIDiskState
*s
, int page
, uint8_t *p
)
1451 case MODE_PAGE_CACHING
:
1452 blk_set_enable_write_cache(s
->qdev
.conf
.blk
, (p
[0] & 4) != 0);
1460 static int mode_select_pages(SCSIDiskReq
*r
, uint8_t *p
, int len
, bool change
)
1462 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1465 int page
, subpage
, page_len
;
1467 /* Parse both possible formats for the mode page headers. */
1471 goto invalid_param_len
;
1474 page_len
= lduw_be_p(&p
[2]);
1479 goto invalid_param_len
;
1490 if (page_len
> len
) {
1491 goto invalid_param_len
;
1495 if (scsi_disk_check_mode_select(s
, page
, p
, page_len
) < 0) {
1499 scsi_disk_apply_mode_select(s
, page
, p
);
1508 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1512 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1516 static void scsi_disk_emulate_mode_select(SCSIDiskReq
*r
, uint8_t *inbuf
)
1518 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1520 int cmd
= r
->req
.cmd
.buf
[0];
1521 int len
= r
->req
.cmd
.xfer
;
1522 int hdr_len
= (cmd
== MODE_SELECT
? 4 : 8);
1526 /* We only support PF=1, SP=0. */
1527 if ((r
->req
.cmd
.buf
[1] & 0x11) != 0x10) {
1531 if (len
< hdr_len
) {
1532 goto invalid_param_len
;
1535 bd_len
= (cmd
== MODE_SELECT
? p
[3] : lduw_be_p(&p
[6]));
1539 goto invalid_param_len
;
1541 if (bd_len
!= 0 && bd_len
!= 8) {
1548 /* Ensure no change is made if there is an error! */
1549 for (pass
= 0; pass
< 2; pass
++) {
1550 if (mode_select_pages(r
, p
, len
, pass
== 1) < 0) {
1555 if (!blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1556 /* The request is used as the AIO opaque value, so add a ref. */
1557 scsi_req_ref(&r
->req
);
1558 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
1560 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
1564 scsi_req_complete(&r
->req
, GOOD
);
1568 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1572 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1576 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1579 static inline bool check_lba_range(SCSIDiskState
*s
,
1580 uint64_t sector_num
, uint32_t nb_sectors
)
1583 * The first line tests that no overflow happens when computing the last
1584 * sector. The second line tests that the last accessed sector is in
1587 * Careful, the computations should not underflow for nb_sectors == 0,
1588 * and a 0-block read to the first LBA beyond the end of device is
1591 return (sector_num
<= sector_num
+ nb_sectors
&&
1592 sector_num
+ nb_sectors
<= s
->qdev
.max_lba
+ 1);
1595 typedef struct UnmapCBData
{
1601 static void scsi_unmap_complete(void *opaque
, int ret
);
1603 static void scsi_unmap_complete_noio(UnmapCBData
*data
, int ret
)
1605 SCSIDiskReq
*r
= data
->r
;
1606 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1608 assert(r
->req
.aiocb
== NULL
);
1610 if (data
->count
> 0) {
1611 r
->sector
= ldq_be_p(&data
->inbuf
[0])
1612 * (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1613 r
->sector_count
= (ldl_be_p(&data
->inbuf
[8]) & 0xffffffffULL
)
1614 * (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1615 if (!check_lba_range(s
, r
->sector
, r
->sector_count
)) {
1616 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
),
1618 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1622 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1623 r
->sector_count
* BDRV_SECTOR_SIZE
,
1626 r
->req
.aiocb
= blk_aio_pdiscard(s
->qdev
.conf
.blk
,
1627 r
->sector
* BDRV_SECTOR_SIZE
,
1628 r
->sector_count
* BDRV_SECTOR_SIZE
,
1629 scsi_unmap_complete
, data
);
1635 scsi_req_complete(&r
->req
, GOOD
);
1638 scsi_req_unref(&r
->req
);
1642 static void scsi_unmap_complete(void *opaque
, int ret
)
1644 UnmapCBData
*data
= opaque
;
1645 SCSIDiskReq
*r
= data
->r
;
1646 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1648 assert(r
->req
.aiocb
!= NULL
);
1649 r
->req
.aiocb
= NULL
;
1651 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1652 if (scsi_disk_req_check_error(r
, ret
, true)) {
1653 scsi_req_unref(&r
->req
);
1656 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1657 scsi_unmap_complete_noio(data
, ret
);
1659 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1662 static void scsi_disk_emulate_unmap(SCSIDiskReq
*r
, uint8_t *inbuf
)
1664 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1666 int len
= r
->req
.cmd
.xfer
;
1669 /* Reject ANCHOR=1. */
1670 if (r
->req
.cmd
.buf
[1] & 0x1) {
1675 goto invalid_param_len
;
1677 if (len
< lduw_be_p(&p
[0]) + 2) {
1678 goto invalid_param_len
;
1680 if (len
< lduw_be_p(&p
[2]) + 8) {
1681 goto invalid_param_len
;
1683 if (lduw_be_p(&p
[2]) & 15) {
1684 goto invalid_param_len
;
1687 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1688 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1689 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1693 data
= g_new0(UnmapCBData
, 1);
1695 data
->inbuf
= &p
[8];
1696 data
->count
= lduw_be_p(&p
[2]) >> 4;
1698 /* The matching unref is in scsi_unmap_complete, before data is freed. */
1699 scsi_req_ref(&r
->req
);
1700 scsi_unmap_complete_noio(data
, 0);
1704 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1705 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1709 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1710 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1713 typedef struct WriteSameCBData
{
1721 static void scsi_write_same_complete(void *opaque
, int ret
)
1723 WriteSameCBData
*data
= opaque
;
1724 SCSIDiskReq
*r
= data
->r
;
1725 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1727 assert(r
->req
.aiocb
!= NULL
);
1728 r
->req
.aiocb
= NULL
;
1729 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1730 if (scsi_disk_req_check_error(r
, ret
, true)) {
1734 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1736 data
->nb_sectors
-= data
->iov
.iov_len
/ BDRV_SECTOR_SIZE
;
1737 data
->sector
+= data
->iov
.iov_len
/ BDRV_SECTOR_SIZE
;
1738 data
->iov
.iov_len
= MIN(data
->nb_sectors
* BDRV_SECTOR_SIZE
,
1740 if (data
->iov
.iov_len
) {
1741 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1742 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1743 /* Reinitialize qiov, to handle unaligned WRITE SAME request
1744 * where final qiov may need smaller size */
1745 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1746 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1747 data
->sector
<< BDRV_SECTOR_BITS
,
1749 scsi_write_same_complete
, data
);
1750 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1754 scsi_req_complete(&r
->req
, GOOD
);
1757 scsi_req_unref(&r
->req
);
1758 qemu_vfree(data
->iov
.iov_base
);
1760 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1763 static void scsi_disk_emulate_write_same(SCSIDiskReq
*r
, uint8_t *inbuf
)
1765 SCSIRequest
*req
= &r
->req
;
1766 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1767 uint32_t nb_sectors
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
1768 WriteSameCBData
*data
;
1772 /* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */
1773 if (nb_sectors
== 0 || (req
->cmd
.buf
[1] & 0x16)) {
1774 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1778 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1779 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1782 if (!check_lba_range(s
, r
->req
.cmd
.lba
, nb_sectors
)) {
1783 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1787 if ((req
->cmd
.buf
[1] & 0x1) || buffer_is_zero(inbuf
, s
->qdev
.blocksize
)) {
1788 int flags
= (req
->cmd
.buf
[1] & 0x8) ? BDRV_REQ_MAY_UNMAP
: 0;
1790 /* The request is used as the AIO opaque value, so add a ref. */
1791 scsi_req_ref(&r
->req
);
1792 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1793 nb_sectors
* s
->qdev
.blocksize
,
1795 r
->req
.aiocb
= blk_aio_pwrite_zeroes(s
->qdev
.conf
.blk
,
1796 r
->req
.cmd
.lba
* s
->qdev
.blocksize
,
1797 nb_sectors
* s
->qdev
.blocksize
,
1798 flags
, scsi_aio_complete
, r
);
1802 data
= g_new0(WriteSameCBData
, 1);
1804 data
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1805 data
->nb_sectors
= nb_sectors
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1806 data
->iov
.iov_len
= MIN(data
->nb_sectors
* BDRV_SECTOR_SIZE
,
1807 SCSI_WRITE_SAME_MAX
);
1808 data
->iov
.iov_base
= buf
= blk_blockalign(s
->qdev
.conf
.blk
,
1810 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1812 for (i
= 0; i
< data
->iov
.iov_len
; i
+= s
->qdev
.blocksize
) {
1813 memcpy(&buf
[i
], inbuf
, s
->qdev
.blocksize
);
1816 scsi_req_ref(&r
->req
);
1817 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1818 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1819 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1820 data
->sector
<< BDRV_SECTOR_BITS
,
1822 scsi_write_same_complete
, data
);
1825 static void scsi_disk_emulate_write_data(SCSIRequest
*req
)
1827 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1829 if (r
->iov
.iov_len
) {
1830 int buflen
= r
->iov
.iov_len
;
1831 trace_scsi_disk_emulate_write_data(buflen
);
1833 scsi_req_data(&r
->req
, buflen
);
1837 switch (req
->cmd
.buf
[0]) {
1839 case MODE_SELECT_10
:
1840 /* This also clears the sense buffer for REQUEST SENSE. */
1841 scsi_disk_emulate_mode_select(r
, r
->iov
.iov_base
);
1845 scsi_disk_emulate_unmap(r
, r
->iov
.iov_base
);
1851 if (r
->req
.status
== -1) {
1852 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1858 scsi_disk_emulate_write_same(r
, r
->iov
.iov_base
);
1866 static int32_t scsi_disk_emulate_command(SCSIRequest
*req
, uint8_t *buf
)
1868 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1869 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1870 uint64_t nb_sectors
;
1874 switch (req
->cmd
.buf
[0]) {
1883 case ALLOW_MEDIUM_REMOVAL
:
1884 case GET_CONFIGURATION
:
1885 case GET_EVENT_STATUS_NOTIFICATION
:
1886 case MECHANISM_STATUS
:
1891 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
1892 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
1899 * FIXME: we shouldn't return anything bigger than 4k, but the code
1900 * requires the buffer to be as big as req->cmd.xfer in several
1901 * places. So, do not allow CDBs with a very large ALLOCATION
1902 * LENGTH. The real fix would be to modify scsi_read_data and
1903 * dma_buf_read, so that they return data beyond the buflen
1906 if (req
->cmd
.xfer
> 65536) {
1907 goto illegal_request
;
1909 r
->buflen
= MAX(4096, req
->cmd
.xfer
);
1911 if (!r
->iov
.iov_base
) {
1912 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
1915 outbuf
= r
->iov
.iov_base
;
1916 memset(outbuf
, 0, r
->buflen
);
1917 switch (req
->cmd
.buf
[0]) {
1918 case TEST_UNIT_READY
:
1919 assert(blk_is_available(s
->qdev
.conf
.blk
));
1922 buflen
= scsi_disk_emulate_inquiry(req
, outbuf
);
1924 goto illegal_request
;
1929 buflen
= scsi_disk_emulate_mode_sense(r
, outbuf
);
1931 goto illegal_request
;
1935 buflen
= scsi_disk_emulate_read_toc(req
, outbuf
);
1937 goto illegal_request
;
1941 if (req
->cmd
.buf
[1] & 1) {
1942 goto illegal_request
;
1946 if (req
->cmd
.buf
[1] & 3) {
1947 goto illegal_request
;
1951 if (req
->cmd
.buf
[1] & 1) {
1952 goto illegal_request
;
1956 if (req
->cmd
.buf
[1] & 3) {
1957 goto illegal_request
;
1961 if (scsi_disk_emulate_start_stop(r
) < 0) {
1965 case ALLOW_MEDIUM_REMOVAL
:
1966 s
->tray_locked
= req
->cmd
.buf
[4] & 1;
1967 blk_lock_medium(s
->qdev
.conf
.blk
, req
->cmd
.buf
[4] & 1);
1969 case READ_CAPACITY_10
:
1970 /* The normal LEN field for this command is zero. */
1971 memset(outbuf
, 0, 8);
1972 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1974 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
1977 if ((req
->cmd
.buf
[8] & 1) == 0 && req
->cmd
.lba
) {
1978 goto illegal_request
;
1980 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
1981 /* Returned value is the address of the last sector. */
1983 /* Remember the new size for read/write sanity checking. */
1984 s
->qdev
.max_lba
= nb_sectors
;
1985 /* Clip to 2TB, instead of returning capacity modulo 2TB. */
1986 if (nb_sectors
> UINT32_MAX
) {
1987 nb_sectors
= UINT32_MAX
;
1989 outbuf
[0] = (nb_sectors
>> 24) & 0xff;
1990 outbuf
[1] = (nb_sectors
>> 16) & 0xff;
1991 outbuf
[2] = (nb_sectors
>> 8) & 0xff;
1992 outbuf
[3] = nb_sectors
& 0xff;
1995 outbuf
[6] = s
->qdev
.blocksize
>> 8;
1999 /* Just return "NO SENSE". */
2000 buflen
= scsi_convert_sense(NULL
, 0, outbuf
, r
->buflen
,
2001 (req
->cmd
.buf
[1] & 1) == 0);
2003 goto illegal_request
;
2006 case MECHANISM_STATUS
:
2007 buflen
= scsi_emulate_mechanism_status(s
, outbuf
);
2009 goto illegal_request
;
2012 case GET_CONFIGURATION
:
2013 buflen
= scsi_get_configuration(s
, outbuf
);
2015 goto illegal_request
;
2018 case GET_EVENT_STATUS_NOTIFICATION
:
2019 buflen
= scsi_get_event_status_notification(s
, r
, outbuf
);
2021 goto illegal_request
;
2024 case READ_DISC_INFORMATION
:
2025 buflen
= scsi_read_disc_information(s
, r
, outbuf
);
2027 goto illegal_request
;
2030 case READ_DVD_STRUCTURE
:
2031 buflen
= scsi_read_dvd_structure(s
, r
, outbuf
);
2033 goto illegal_request
;
2036 case SERVICE_ACTION_IN_16
:
2037 /* Service Action In subcommands. */
2038 if ((req
->cmd
.buf
[1] & 31) == SAI_READ_CAPACITY_16
) {
2039 trace_scsi_disk_emulate_command_SAI_16();
2040 memset(outbuf
, 0, req
->cmd
.xfer
);
2041 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2043 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
2046 if ((req
->cmd
.buf
[14] & 1) == 0 && req
->cmd
.lba
) {
2047 goto illegal_request
;
2049 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
2050 /* Returned value is the address of the last sector. */
2052 /* Remember the new size for read/write sanity checking. */
2053 s
->qdev
.max_lba
= nb_sectors
;
2054 outbuf
[0] = (nb_sectors
>> 56) & 0xff;
2055 outbuf
[1] = (nb_sectors
>> 48) & 0xff;
2056 outbuf
[2] = (nb_sectors
>> 40) & 0xff;
2057 outbuf
[3] = (nb_sectors
>> 32) & 0xff;
2058 outbuf
[4] = (nb_sectors
>> 24) & 0xff;
2059 outbuf
[5] = (nb_sectors
>> 16) & 0xff;
2060 outbuf
[6] = (nb_sectors
>> 8) & 0xff;
2061 outbuf
[7] = nb_sectors
& 0xff;
2064 outbuf
[10] = s
->qdev
.blocksize
>> 8;
2067 outbuf
[13] = get_physical_block_exp(&s
->qdev
.conf
);
2069 /* set TPE bit if the format supports discard */
2070 if (s
->qdev
.conf
.discard_granularity
) {
2074 /* Protection, exponent and lowest lba field left blank. */
2077 trace_scsi_disk_emulate_command_SAI_unsupported();
2078 goto illegal_request
;
2079 case SYNCHRONIZE_CACHE
:
2080 /* The request is used as the AIO opaque value, so add a ref. */
2081 scsi_req_ref(&r
->req
);
2082 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
2084 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
2087 trace_scsi_disk_emulate_command_SEEK_10(r
->req
.cmd
.lba
);
2088 if (r
->req
.cmd
.lba
> s
->qdev
.max_lba
) {
2093 trace_scsi_disk_emulate_command_MODE_SELECT(r
->req
.cmd
.xfer
);
2095 case MODE_SELECT_10
:
2096 trace_scsi_disk_emulate_command_MODE_SELECT_10(r
->req
.cmd
.xfer
);
2099 trace_scsi_disk_emulate_command_UNMAP(r
->req
.cmd
.xfer
);
2104 trace_scsi_disk_emulate_command_VERIFY((req
->cmd
.buf
[1] >> 1) & 3);
2105 if (req
->cmd
.buf
[1] & 6) {
2106 goto illegal_request
;
2111 trace_scsi_disk_emulate_command_WRITE_SAME(
2112 req
->cmd
.buf
[0] == WRITE_SAME_10
? 10 : 16, r
->req
.cmd
.xfer
);
2115 trace_scsi_disk_emulate_command_UNKNOWN(buf
[0],
2116 scsi_command_name(buf
[0]));
2117 scsi_check_condition(r
, SENSE_CODE(INVALID_OPCODE
));
2120 assert(!r
->req
.aiocb
);
2121 r
->iov
.iov_len
= MIN(r
->buflen
, req
->cmd
.xfer
);
2122 if (r
->iov
.iov_len
== 0) {
2123 scsi_req_complete(&r
->req
, GOOD
);
2125 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2126 assert(r
->iov
.iov_len
== req
->cmd
.xfer
);
2127 return -r
->iov
.iov_len
;
2129 return r
->iov
.iov_len
;
2133 if (r
->req
.status
== -1) {
2134 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2139 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2143 /* Execute a scsi command. Returns the length of the data expected by the
2144 command. This will be Positive for data transfers from the device
2145 (eg. disk reads), negative for transfers to the device (eg. disk writes),
2146 and zero if the command does not transfer any data. */
2148 static int32_t scsi_disk_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2150 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2151 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2152 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
2158 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
2159 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
2163 len
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
2169 trace_scsi_disk_dma_command_READ(r
->req
.cmd
.lba
, len
);
2170 /* Protection information is not supported. For SCSI versions 2 and
2171 * older (as determined by snooping the guest's INQUIRY commands),
2172 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2174 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2175 goto illegal_request
;
2177 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2180 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2181 r
->sector_count
= len
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2187 case WRITE_VERIFY_10
:
2188 case WRITE_VERIFY_12
:
2189 case WRITE_VERIFY_16
:
2190 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
2191 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
2194 trace_scsi_disk_dma_command_WRITE(
2195 (command
& 0xe) == 0xe ? "And Verify " : "",
2196 r
->req
.cmd
.lba
, len
);
2201 /* We get here only for BYTCHK == 0x01 and only for scsi-block.
2202 * As far as DMA is concerned, we can treat it the same as a write;
2203 * scsi_block_do_sgio will send VERIFY commands.
2205 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2206 goto illegal_request
;
2208 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2211 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2212 r
->sector_count
= len
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2217 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2220 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2223 r
->need_fua_emulation
= sdc
->need_fua_emulation(&r
->req
.cmd
);
2224 if (r
->sector_count
== 0) {
2225 scsi_req_complete(&r
->req
, GOOD
);
2227 assert(r
->iov
.iov_len
== 0);
2228 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2229 return -r
->sector_count
* BDRV_SECTOR_SIZE
;
2231 return r
->sector_count
* BDRV_SECTOR_SIZE
;
2235 static void scsi_disk_reset(DeviceState
*dev
)
2237 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
.qdev
, dev
);
2238 uint64_t nb_sectors
;
2240 scsi_device_purge_requests(&s
->qdev
, SENSE_CODE(RESET
));
2242 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2243 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
2247 s
->qdev
.max_lba
= nb_sectors
;
2248 /* reset tray statuses */
2252 s
->qdev
.scsi_version
= s
->qdev
.default_scsi_version
;
2255 static void scsi_disk_resize_cb(void *opaque
)
2257 SCSIDiskState
*s
= opaque
;
2259 /* SPC lists this sense code as available only for
2260 * direct-access devices.
2262 if (s
->qdev
.type
== TYPE_DISK
) {
2263 scsi_device_report_change(&s
->qdev
, SENSE_CODE(CAPACITY_CHANGED
));
2267 static void scsi_cd_change_media_cb(void *opaque
, bool load
, Error
**errp
)
2269 SCSIDiskState
*s
= opaque
;
2272 * When a CD gets changed, we have to report an ejected state and
2273 * then a loaded state to guests so that they detect tray
2274 * open/close and media change events. Guests that do not use
2275 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
2276 * states rely on this behavior.
2278 * media_changed governs the state machine used for unit attention
2279 * report. media_event is used by GET EVENT STATUS NOTIFICATION.
2281 s
->media_changed
= load
;
2282 s
->tray_open
= !load
;
2283 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM
));
2284 s
->media_event
= true;
2285 s
->eject_request
= false;
2288 static void scsi_cd_eject_request_cb(void *opaque
, bool force
)
2290 SCSIDiskState
*s
= opaque
;
2292 s
->eject_request
= true;
2294 s
->tray_locked
= false;
2298 static bool scsi_cd_is_tray_open(void *opaque
)
2300 return ((SCSIDiskState
*)opaque
)->tray_open
;
2303 static bool scsi_cd_is_medium_locked(void *opaque
)
2305 return ((SCSIDiskState
*)opaque
)->tray_locked
;
2308 static const BlockDevOps scsi_disk_removable_block_ops
= {
2309 .change_media_cb
= scsi_cd_change_media_cb
,
2310 .eject_request_cb
= scsi_cd_eject_request_cb
,
2311 .is_tray_open
= scsi_cd_is_tray_open
,
2312 .is_medium_locked
= scsi_cd_is_medium_locked
,
2314 .resize_cb
= scsi_disk_resize_cb
,
2317 static const BlockDevOps scsi_disk_block_ops
= {
2318 .resize_cb
= scsi_disk_resize_cb
,
2321 static void scsi_disk_unit_attention_reported(SCSIDevice
*dev
)
2323 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2324 if (s
->media_changed
) {
2325 s
->media_changed
= false;
2326 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(MEDIUM_CHANGED
));
2330 static void scsi_realize(SCSIDevice
*dev
, Error
**errp
)
2332 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2335 if (!s
->qdev
.conf
.blk
) {
2336 error_setg(errp
, "drive property not set");
2340 if (!(s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2341 !blk_is_inserted(s
->qdev
.conf
.blk
)) {
2342 error_setg(errp
, "Device needs media, but drive is empty");
2346 if (!blkconf_blocksizes(&s
->qdev
.conf
, errp
)) {
2350 if (blk_get_aio_context(s
->qdev
.conf
.blk
) != qemu_get_aio_context() &&
2351 !s
->qdev
.hba_supports_iothread
)
2353 error_setg(errp
, "HBA does not support iothreads");
2357 if (dev
->type
== TYPE_DISK
) {
2358 if (!blkconf_geometry(&dev
->conf
, NULL
, 65535, 255, 255, errp
)) {
2363 read_only
= blk_is_read_only(s
->qdev
.conf
.blk
);
2364 if (dev
->type
== TYPE_ROM
) {
2368 if (!blkconf_apply_backend_options(&dev
->conf
, read_only
,
2369 dev
->type
== TYPE_DISK
, errp
)) {
2373 if (s
->qdev
.conf
.discard_granularity
== -1) {
2374 s
->qdev
.conf
.discard_granularity
=
2375 MAX(s
->qdev
.conf
.logical_block_size
, DEFAULT_DISCARD_GRANULARITY
);
2379 s
->version
= g_strdup(qemu_hw_version());
2382 s
->vendor
= g_strdup("QEMU");
2384 if (!s
->device_id
) {
2386 s
->device_id
= g_strdup_printf("%.20s", s
->serial
);
2388 const char *str
= blk_name(s
->qdev
.conf
.blk
);
2390 s
->device_id
= g_strdup(str
);
2395 if (blk_is_sg(s
->qdev
.conf
.blk
)) {
2396 error_setg(errp
, "unwanted /dev/sg*");
2400 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2401 !(s
->features
& (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
))) {
2402 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_removable_block_ops
, s
);
2404 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_block_ops
, s
);
2406 blk_set_guest_block_size(s
->qdev
.conf
.blk
, s
->qdev
.blocksize
);
2408 blk_iostatus_enable(s
->qdev
.conf
.blk
);
2410 add_boot_device_lchs(&dev
->qdev
, NULL
,
2416 static void scsi_unrealize(SCSIDevice
*dev
)
2418 del_boot_device_lchs(&dev
->qdev
, NULL
);
2421 static void scsi_hd_realize(SCSIDevice
*dev
, Error
**errp
)
2423 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2424 AioContext
*ctx
= NULL
;
2425 /* can happen for devices without drive. The error message for missing
2426 * backend will be issued in scsi_realize
2428 if (s
->qdev
.conf
.blk
) {
2429 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2430 aio_context_acquire(ctx
);
2431 if (!blkconf_blocksizes(&s
->qdev
.conf
, errp
)) {
2435 s
->qdev
.blocksize
= s
->qdev
.conf
.logical_block_size
;
2436 s
->qdev
.type
= TYPE_DISK
;
2438 s
->product
= g_strdup("QEMU HARDDISK");
2440 scsi_realize(&s
->qdev
, errp
);
2443 aio_context_release(ctx
);
2447 static void scsi_cd_realize(SCSIDevice
*dev
, Error
**errp
)
2449 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2453 if (!dev
->conf
.blk
) {
2454 /* Anonymous BlockBackend for an empty drive. As we put it into
2455 * dev->conf, qdev takes care of detaching on unplug. */
2456 dev
->conf
.blk
= blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL
);
2457 ret
= blk_attach_dev(dev
->conf
.blk
, &dev
->qdev
);
2461 ctx
= blk_get_aio_context(dev
->conf
.blk
);
2462 aio_context_acquire(ctx
);
2463 s
->qdev
.blocksize
= 2048;
2464 s
->qdev
.type
= TYPE_ROM
;
2465 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2467 s
->product
= g_strdup("QEMU CD-ROM");
2469 scsi_realize(&s
->qdev
, errp
);
2470 aio_context_release(ctx
);
2473 static void scsi_disk_realize(SCSIDevice
*dev
, Error
**errp
)
2476 Error
*local_err
= NULL
;
2478 warn_report("'scsi-disk' is deprecated, "
2479 "please use 'scsi-hd' or 'scsi-cd' instead");
2481 if (!dev
->conf
.blk
) {
2482 scsi_realize(dev
, &local_err
);
2484 error_propagate(errp
, local_err
);
2488 dinfo
= blk_legacy_dinfo(dev
->conf
.blk
);
2489 if (dinfo
&& dinfo
->media_cd
) {
2490 scsi_cd_realize(dev
, errp
);
2492 scsi_hd_realize(dev
, errp
);
2496 static const SCSIReqOps scsi_disk_emulate_reqops
= {
2497 .size
= sizeof(SCSIDiskReq
),
2498 .free_req
= scsi_free_request
,
2499 .send_command
= scsi_disk_emulate_command
,
2500 .read_data
= scsi_disk_emulate_read_data
,
2501 .write_data
= scsi_disk_emulate_write_data
,
2502 .get_buf
= scsi_get_buf
,
2505 static const SCSIReqOps scsi_disk_dma_reqops
= {
2506 .size
= sizeof(SCSIDiskReq
),
2507 .free_req
= scsi_free_request
,
2508 .send_command
= scsi_disk_dma_command
,
2509 .read_data
= scsi_read_data
,
2510 .write_data
= scsi_write_data
,
2511 .get_buf
= scsi_get_buf
,
2512 .load_request
= scsi_disk_load_request
,
2513 .save_request
= scsi_disk_save_request
,
2516 static const SCSIReqOps
*const scsi_disk_reqops_dispatch
[256] = {
2517 [TEST_UNIT_READY
] = &scsi_disk_emulate_reqops
,
2518 [INQUIRY
] = &scsi_disk_emulate_reqops
,
2519 [MODE_SENSE
] = &scsi_disk_emulate_reqops
,
2520 [MODE_SENSE_10
] = &scsi_disk_emulate_reqops
,
2521 [START_STOP
] = &scsi_disk_emulate_reqops
,
2522 [ALLOW_MEDIUM_REMOVAL
] = &scsi_disk_emulate_reqops
,
2523 [READ_CAPACITY_10
] = &scsi_disk_emulate_reqops
,
2524 [READ_TOC
] = &scsi_disk_emulate_reqops
,
2525 [READ_DVD_STRUCTURE
] = &scsi_disk_emulate_reqops
,
2526 [READ_DISC_INFORMATION
] = &scsi_disk_emulate_reqops
,
2527 [GET_CONFIGURATION
] = &scsi_disk_emulate_reqops
,
2528 [GET_EVENT_STATUS_NOTIFICATION
] = &scsi_disk_emulate_reqops
,
2529 [MECHANISM_STATUS
] = &scsi_disk_emulate_reqops
,
2530 [SERVICE_ACTION_IN_16
] = &scsi_disk_emulate_reqops
,
2531 [REQUEST_SENSE
] = &scsi_disk_emulate_reqops
,
2532 [SYNCHRONIZE_CACHE
] = &scsi_disk_emulate_reqops
,
2533 [SEEK_10
] = &scsi_disk_emulate_reqops
,
2534 [MODE_SELECT
] = &scsi_disk_emulate_reqops
,
2535 [MODE_SELECT_10
] = &scsi_disk_emulate_reqops
,
2536 [UNMAP
] = &scsi_disk_emulate_reqops
,
2537 [WRITE_SAME_10
] = &scsi_disk_emulate_reqops
,
2538 [WRITE_SAME_16
] = &scsi_disk_emulate_reqops
,
2539 [VERIFY_10
] = &scsi_disk_emulate_reqops
,
2540 [VERIFY_12
] = &scsi_disk_emulate_reqops
,
2541 [VERIFY_16
] = &scsi_disk_emulate_reqops
,
2543 [READ_6
] = &scsi_disk_dma_reqops
,
2544 [READ_10
] = &scsi_disk_dma_reqops
,
2545 [READ_12
] = &scsi_disk_dma_reqops
,
2546 [READ_16
] = &scsi_disk_dma_reqops
,
2547 [WRITE_6
] = &scsi_disk_dma_reqops
,
2548 [WRITE_10
] = &scsi_disk_dma_reqops
,
2549 [WRITE_12
] = &scsi_disk_dma_reqops
,
2550 [WRITE_16
] = &scsi_disk_dma_reqops
,
2551 [WRITE_VERIFY_10
] = &scsi_disk_dma_reqops
,
2552 [WRITE_VERIFY_12
] = &scsi_disk_dma_reqops
,
2553 [WRITE_VERIFY_16
] = &scsi_disk_dma_reqops
,
2556 static void scsi_disk_new_request_dump(uint32_t lun
, uint32_t tag
, uint8_t *buf
)
2559 int len
= scsi_cdb_length(buf
);
2560 char *line_buffer
, *p
;
2562 line_buffer
= g_malloc(len
* 5 + 1);
2564 for (i
= 0, p
= line_buffer
; i
< len
; i
++) {
2565 p
+= sprintf(p
, " 0x%02x", buf
[i
]);
2567 trace_scsi_disk_new_request(lun
, tag
, line_buffer
);
2569 g_free(line_buffer
);
2572 static SCSIRequest
*scsi_new_request(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
2573 uint8_t *buf
, void *hba_private
)
2575 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2577 const SCSIReqOps
*ops
;
2581 ops
= scsi_disk_reqops_dispatch
[command
];
2583 ops
= &scsi_disk_emulate_reqops
;
2585 req
= scsi_req_alloc(ops
, &s
->qdev
, tag
, lun
, hba_private
);
2587 if (trace_event_get_state_backends(TRACE_SCSI_DISK_NEW_REQUEST
)) {
2588 scsi_disk_new_request_dump(lun
, tag
, buf
);
2595 static int get_device_type(SCSIDiskState
*s
)
2601 memset(cmd
, 0, sizeof(cmd
));
2602 memset(buf
, 0, sizeof(buf
));
2604 cmd
[4] = sizeof(buf
);
2606 ret
= scsi_SG_IO_FROM_DEV(s
->qdev
.conf
.blk
, cmd
, sizeof(cmd
),
2611 s
->qdev
.type
= buf
[0];
2612 if (buf
[1] & 0x80) {
2613 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2618 static void scsi_block_realize(SCSIDevice
*dev
, Error
**errp
)
2620 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2625 if (!s
->qdev
.conf
.blk
) {
2626 error_setg(errp
, "drive property not set");
2630 if (s
->rotation_rate
) {
2631 error_report_once("rotation_rate is specified for scsi-block but is "
2632 "not implemented. This option is deprecated and will "
2633 "be removed in a future version");
2636 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2637 aio_context_acquire(ctx
);
2639 /* check we are using a driver managing SG_IO (version 3 and after) */
2640 rc
= blk_ioctl(s
->qdev
.conf
.blk
, SG_GET_VERSION_NUM
, &sg_version
);
2642 error_setg_errno(errp
, -rc
, "cannot get SG_IO version number");
2644 error_append_hint(errp
, "Is this a SCSI device?\n");
2648 if (sg_version
< 30000) {
2649 error_setg(errp
, "scsi generic interface too old");
2653 /* get device type from INQUIRY data */
2654 rc
= get_device_type(s
);
2656 error_setg(errp
, "INQUIRY failed");
2660 /* Make a guess for the block size, we'll fix it when the guest sends.
2661 * READ CAPACITY. If they don't, they likely would assume these sizes
2662 * anyway. (TODO: check in /sys).
2664 if (s
->qdev
.type
== TYPE_ROM
|| s
->qdev
.type
== TYPE_WORM
) {
2665 s
->qdev
.blocksize
= 2048;
2667 s
->qdev
.blocksize
= 512;
2670 /* Makes the scsi-block device not removable by using HMP and QMP eject
2673 s
->features
|= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
);
2675 scsi_realize(&s
->qdev
, errp
);
2676 scsi_generic_read_device_inquiry(&s
->qdev
);
2679 aio_context_release(ctx
);
2682 typedef struct SCSIBlockReq
{
2684 sg_io_hdr_t io_header
;
2686 /* Selected bytes of the original CDB, copied into our own CDB. */
2687 uint8_t cmd
, cdb1
, group_number
;
2689 /* CDB passed to SG_IO. */
2693 static BlockAIOCB
*scsi_block_do_sgio(SCSIBlockReq
*req
,
2694 int64_t offset
, QEMUIOVector
*iov
,
2696 BlockCompletionFunc
*cb
, void *opaque
)
2698 sg_io_hdr_t
*io_header
= &req
->io_header
;
2699 SCSIDiskReq
*r
= &req
->req
;
2700 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2701 int nb_logical_blocks
;
2705 /* This is not supported yet. It can only happen if the guest does
2706 * reads and writes that are not aligned to one logical sectors
2707 * _and_ cover multiple MemoryRegions.
2709 assert(offset
% s
->qdev
.blocksize
== 0);
2710 assert(iov
->size
% s
->qdev
.blocksize
== 0);
2712 io_header
->interface_id
= 'S';
2714 /* The data transfer comes from the QEMUIOVector. */
2715 io_header
->dxfer_direction
= direction
;
2716 io_header
->dxfer_len
= iov
->size
;
2717 io_header
->dxferp
= (void *)iov
->iov
;
2718 io_header
->iovec_count
= iov
->niov
;
2719 assert(io_header
->iovec_count
== iov
->niov
); /* no overflow! */
2721 /* Build a new CDB with the LBA and length patched in, in case
2722 * DMA helpers split the transfer in multiple segments. Do not
2723 * build a CDB smaller than what the guest wanted, and only build
2724 * a larger one if strictly necessary.
2726 io_header
->cmdp
= req
->cdb
;
2727 lba
= offset
/ s
->qdev
.blocksize
;
2728 nb_logical_blocks
= io_header
->dxfer_len
/ s
->qdev
.blocksize
;
2730 if ((req
->cmd
>> 5) == 0 && lba
<= 0x1ffff) {
2732 stl_be_p(&req
->cdb
[0], lba
| (req
->cmd
<< 24));
2733 req
->cdb
[4] = nb_logical_blocks
;
2735 io_header
->cmd_len
= 6;
2736 } else if ((req
->cmd
>> 5) <= 1 && lba
<= 0xffffffffULL
) {
2738 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x20;
2739 req
->cdb
[1] = req
->cdb1
;
2740 stl_be_p(&req
->cdb
[2], lba
);
2741 req
->cdb
[6] = req
->group_number
;
2742 stw_be_p(&req
->cdb
[7], nb_logical_blocks
);
2744 io_header
->cmd_len
= 10;
2745 } else if ((req
->cmd
>> 5) != 4 && lba
<= 0xffffffffULL
) {
2747 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0xA0;
2748 req
->cdb
[1] = req
->cdb1
;
2749 stl_be_p(&req
->cdb
[2], lba
);
2750 stl_be_p(&req
->cdb
[6], nb_logical_blocks
);
2751 req
->cdb
[10] = req
->group_number
;
2753 io_header
->cmd_len
= 12;
2756 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x80;
2757 req
->cdb
[1] = req
->cdb1
;
2758 stq_be_p(&req
->cdb
[2], lba
);
2759 stl_be_p(&req
->cdb
[10], nb_logical_blocks
);
2760 req
->cdb
[14] = req
->group_number
;
2762 io_header
->cmd_len
= 16;
2765 /* The rest is as in scsi-generic.c. */
2766 io_header
->mx_sb_len
= sizeof(r
->req
.sense
);
2767 io_header
->sbp
= r
->req
.sense
;
2768 io_header
->timeout
= UINT_MAX
;
2769 io_header
->usr_ptr
= r
;
2770 io_header
->flags
|= SG_FLAG_DIRECT_IO
;
2772 aiocb
= blk_aio_ioctl(s
->qdev
.conf
.blk
, SG_IO
, io_header
, cb
, opaque
);
2773 assert(aiocb
!= NULL
);
2777 static bool scsi_block_no_fua(SCSICommand
*cmd
)
2782 static BlockAIOCB
*scsi_block_dma_readv(int64_t offset
,
2784 BlockCompletionFunc
*cb
, void *cb_opaque
,
2787 SCSIBlockReq
*r
= opaque
;
2788 return scsi_block_do_sgio(r
, offset
, iov
,
2789 SG_DXFER_FROM_DEV
, cb
, cb_opaque
);
2792 static BlockAIOCB
*scsi_block_dma_writev(int64_t offset
,
2794 BlockCompletionFunc
*cb
, void *cb_opaque
,
2797 SCSIBlockReq
*r
= opaque
;
2798 return scsi_block_do_sgio(r
, offset
, iov
,
2799 SG_DXFER_TO_DEV
, cb
, cb_opaque
);
2802 static bool scsi_block_is_passthrough(SCSIDiskState
*s
, uint8_t *buf
)
2808 /* Check if BYTCHK == 0x01 (data-out buffer contains data
2809 * for the number of logical blocks specified in the length
2810 * field). For other modes, do not use scatter/gather operation.
2812 if ((buf
[1] & 6) == 2) {
2825 case WRITE_VERIFY_10
:
2826 case WRITE_VERIFY_12
:
2827 case WRITE_VERIFY_16
:
2828 /* MMC writing cannot be done via DMA helpers, because it sometimes
2829 * involves writing beyond the maximum LBA or to negative LBA (lead-in).
2830 * We might use scsi_block_dma_reqops as long as no writing commands are
2831 * seen, but performance usually isn't paramount on optical media. So,
2832 * just make scsi-block operate the same as scsi-generic for them.
2834 if (s
->qdev
.type
!= TYPE_ROM
) {
2847 static int32_t scsi_block_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2849 SCSIBlockReq
*r
= (SCSIBlockReq
*)req
;
2850 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2852 r
->cmd
= req
->cmd
.buf
[0];
2853 switch (r
->cmd
>> 5) {
2856 r
->cdb1
= r
->group_number
= 0;
2860 r
->cdb1
= req
->cmd
.buf
[1];
2861 r
->group_number
= req
->cmd
.buf
[6];
2865 r
->cdb1
= req
->cmd
.buf
[1];
2866 r
->group_number
= req
->cmd
.buf
[10];
2870 r
->cdb1
= req
->cmd
.buf
[1];
2871 r
->group_number
= req
->cmd
.buf
[14];
2877 /* Protection information is not supported. For SCSI versions 2 and
2878 * older (as determined by snooping the guest's INQUIRY commands),
2879 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2881 if (s
->qdev
.scsi_version
> 2 && (req
->cmd
.buf
[1] & 0xe0)) {
2882 scsi_check_condition(&r
->req
, SENSE_CODE(INVALID_FIELD
));
2886 r
->req
.status
= &r
->io_header
.status
;
2887 return scsi_disk_dma_command(req
, buf
);
2890 static const SCSIReqOps scsi_block_dma_reqops
= {
2891 .size
= sizeof(SCSIBlockReq
),
2892 .free_req
= scsi_free_request
,
2893 .send_command
= scsi_block_dma_command
,
2894 .read_data
= scsi_read_data
,
2895 .write_data
= scsi_write_data
,
2896 .get_buf
= scsi_get_buf
,
2897 .load_request
= scsi_disk_load_request
,
2898 .save_request
= scsi_disk_save_request
,
2901 static SCSIRequest
*scsi_block_new_request(SCSIDevice
*d
, uint32_t tag
,
2902 uint32_t lun
, uint8_t *buf
,
2905 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2907 if (scsi_block_is_passthrough(s
, buf
)) {
2908 return scsi_req_alloc(&scsi_generic_req_ops
, &s
->qdev
, tag
, lun
,
2911 return scsi_req_alloc(&scsi_block_dma_reqops
, &s
->qdev
, tag
, lun
,
2916 static int scsi_block_parse_cdb(SCSIDevice
*d
, SCSICommand
*cmd
,
2917 uint8_t *buf
, void *hba_private
)
2919 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2921 if (scsi_block_is_passthrough(s
, buf
)) {
2922 return scsi_bus_parse_cdb(&s
->qdev
, cmd
, buf
, hba_private
);
2924 return scsi_req_parse_cdb(&s
->qdev
, cmd
, buf
);
2928 static void scsi_block_update_sense(SCSIRequest
*req
)
2930 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2931 SCSIBlockReq
*br
= DO_UPCAST(SCSIBlockReq
, req
, r
);
2932 r
->req
.sense_len
= MIN(br
->io_header
.sb_len_wr
, sizeof(r
->req
.sense
));
2937 BlockAIOCB
*scsi_dma_readv(int64_t offset
, QEMUIOVector
*iov
,
2938 BlockCompletionFunc
*cb
, void *cb_opaque
,
2941 SCSIDiskReq
*r
= opaque
;
2942 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2943 return blk_aio_preadv(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2947 BlockAIOCB
*scsi_dma_writev(int64_t offset
, QEMUIOVector
*iov
,
2948 BlockCompletionFunc
*cb
, void *cb_opaque
,
2951 SCSIDiskReq
*r
= opaque
;
2952 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2953 return blk_aio_pwritev(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2956 static void scsi_disk_base_class_initfn(ObjectClass
*klass
, void *data
)
2958 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2959 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
2961 dc
->fw_name
= "disk";
2962 dc
->reset
= scsi_disk_reset
;
2963 sdc
->dma_readv
= scsi_dma_readv
;
2964 sdc
->dma_writev
= scsi_dma_writev
;
2965 sdc
->need_fua_emulation
= scsi_is_cmd_fua
;
2968 static const TypeInfo scsi_disk_base_info
= {
2969 .name
= TYPE_SCSI_DISK_BASE
,
2970 .parent
= TYPE_SCSI_DEVICE
,
2971 .class_init
= scsi_disk_base_class_initfn
,
2972 .instance_size
= sizeof(SCSIDiskState
),
2973 .class_size
= sizeof(SCSIDiskClass
),
2977 #define DEFINE_SCSI_DISK_PROPERTIES() \
2978 DEFINE_PROP_DRIVE_IOTHREAD("drive", SCSIDiskState, qdev.conf.blk), \
2979 DEFINE_BLOCK_PROPERTIES_BASE(SCSIDiskState, qdev.conf), \
2980 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
2981 DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
2982 DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
2983 DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
2984 DEFINE_PROP_STRING("product", SCSIDiskState, product), \
2985 DEFINE_PROP_STRING("device_id", SCSIDiskState, device_id)
2988 static Property scsi_hd_properties
[] = {
2989 DEFINE_SCSI_DISK_PROPERTIES(),
2990 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
2991 SCSI_DISK_F_REMOVABLE
, false),
2992 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
2993 SCSI_DISK_F_DPOFUA
, false),
2994 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
2995 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
2996 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
2997 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
2998 DEFAULT_MAX_UNMAP_SIZE
),
2999 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3000 DEFAULT_MAX_IO_SIZE
),
3001 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
3002 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3004 DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState
, qdev
.conf
),
3005 DEFINE_PROP_END_OF_LIST(),
3008 static const VMStateDescription vmstate_scsi_disk_state
= {
3009 .name
= "scsi-disk",
3011 .minimum_version_id
= 1,
3012 .fields
= (VMStateField
[]) {
3013 VMSTATE_SCSI_DEVICE(qdev
, SCSIDiskState
),
3014 VMSTATE_BOOL(media_changed
, SCSIDiskState
),
3015 VMSTATE_BOOL(media_event
, SCSIDiskState
),
3016 VMSTATE_BOOL(eject_request
, SCSIDiskState
),
3017 VMSTATE_BOOL(tray_open
, SCSIDiskState
),
3018 VMSTATE_BOOL(tray_locked
, SCSIDiskState
),
3019 VMSTATE_END_OF_LIST()
3023 static void scsi_hd_class_initfn(ObjectClass
*klass
, void *data
)
3025 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3026 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3028 sc
->realize
= scsi_hd_realize
;
3029 sc
->unrealize
= scsi_unrealize
;
3030 sc
->alloc_req
= scsi_new_request
;
3031 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3032 dc
->desc
= "virtual SCSI disk";
3033 device_class_set_props(dc
, scsi_hd_properties
);
3034 dc
->vmsd
= &vmstate_scsi_disk_state
;
3037 static const TypeInfo scsi_hd_info
= {
3039 .parent
= TYPE_SCSI_DISK_BASE
,
3040 .class_init
= scsi_hd_class_initfn
,
3043 static Property scsi_cd_properties
[] = {
3044 DEFINE_SCSI_DISK_PROPERTIES(),
3045 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3046 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3047 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3048 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3049 DEFAULT_MAX_IO_SIZE
),
3050 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3052 DEFINE_PROP_END_OF_LIST(),
3055 static void scsi_cd_class_initfn(ObjectClass
*klass
, void *data
)
3057 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3058 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3060 sc
->realize
= scsi_cd_realize
;
3061 sc
->alloc_req
= scsi_new_request
;
3062 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3063 dc
->desc
= "virtual SCSI CD-ROM";
3064 device_class_set_props(dc
, scsi_cd_properties
);
3065 dc
->vmsd
= &vmstate_scsi_disk_state
;
3068 static const TypeInfo scsi_cd_info
= {
3070 .parent
= TYPE_SCSI_DISK_BASE
,
3071 .class_init
= scsi_cd_class_initfn
,
3075 static Property scsi_block_properties
[] = {
3076 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState
, qdev
.conf
),
3077 DEFINE_PROP_DRIVE("drive", SCSIDiskState
, qdev
.conf
.blk
),
3078 DEFINE_PROP_BOOL("share-rw", SCSIDiskState
, qdev
.conf
.share_rw
, false),
3079 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
3080 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3081 DEFAULT_MAX_UNMAP_SIZE
),
3082 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3083 DEFAULT_MAX_IO_SIZE
),
3084 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3086 DEFINE_PROP_END_OF_LIST(),
3089 static void scsi_block_class_initfn(ObjectClass
*klass
, void *data
)
3091 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3092 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3093 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
3095 sc
->realize
= scsi_block_realize
;
3096 sc
->alloc_req
= scsi_block_new_request
;
3097 sc
->parse_cdb
= scsi_block_parse_cdb
;
3098 sdc
->dma_readv
= scsi_block_dma_readv
;
3099 sdc
->dma_writev
= scsi_block_dma_writev
;
3100 sdc
->update_sense
= scsi_block_update_sense
;
3101 sdc
->need_fua_emulation
= scsi_block_no_fua
;
3102 dc
->desc
= "SCSI block device passthrough";
3103 device_class_set_props(dc
, scsi_block_properties
);
3104 dc
->vmsd
= &vmstate_scsi_disk_state
;
3107 static const TypeInfo scsi_block_info
= {
3108 .name
= "scsi-block",
3109 .parent
= TYPE_SCSI_DISK_BASE
,
3110 .class_init
= scsi_block_class_initfn
,
3114 static Property scsi_disk_properties
[] = {
3115 DEFINE_SCSI_DISK_PROPERTIES(),
3116 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
3117 SCSI_DISK_F_REMOVABLE
, false),
3118 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
3119 SCSI_DISK_F_DPOFUA
, false),
3120 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3121 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3122 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3123 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3124 DEFAULT_MAX_UNMAP_SIZE
),
3125 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3126 DEFAULT_MAX_IO_SIZE
),
3127 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3129 DEFINE_PROP_END_OF_LIST(),
3132 static void scsi_disk_class_initfn(ObjectClass
*klass
, void *data
)
3134 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3135 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3137 sc
->realize
= scsi_disk_realize
;
3138 sc
->alloc_req
= scsi_new_request
;
3139 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3140 dc
->fw_name
= "disk";
3141 dc
->desc
= "virtual SCSI disk or CD-ROM (legacy)";
3142 dc
->reset
= scsi_disk_reset
;
3143 device_class_set_props(dc
, scsi_disk_properties
);
3144 dc
->vmsd
= &vmstate_scsi_disk_state
;
3147 static const TypeInfo scsi_disk_info
= {
3148 .name
= "scsi-disk",
3149 .parent
= TYPE_SCSI_DISK_BASE
,
3150 .class_init
= scsi_disk_class_initfn
,
3153 static void scsi_disk_register_types(void)
3155 type_register_static(&scsi_disk_base_info
);
3156 type_register_static(&scsi_hd_info
);
3157 type_register_static(&scsi_cd_info
);
3159 type_register_static(&scsi_block_info
);
3161 type_register_static(&scsi_disk_info
);
3164 type_init(scsi_disk_register_types
)