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/module.h"
27 #include "hw/scsi/scsi.h"
28 #include "hw/scsi/emulation.h"
29 #include "scsi/constants.h"
30 #include "sysemu/sysemu.h"
31 #include "sysemu/block-backend.h"
32 #include "sysemu/blockdev.h"
33 #include "hw/block/block.h"
34 #include "sysemu/dma.h"
35 #include "qemu/cutils.h"
42 #define SCSI_WRITE_SAME_MAX (512 * KiB)
43 #define SCSI_DMA_BUF_SIZE (128 * KiB)
44 #define SCSI_MAX_INQUIRY_LEN 256
45 #define SCSI_MAX_MODE_LEN 256
47 #define DEFAULT_DISCARD_GRANULARITY (4 * KiB)
48 #define DEFAULT_MAX_UNMAP_SIZE (1 * GiB)
49 #define DEFAULT_MAX_IO_SIZE INT_MAX /* 2 GB - 1 block */
51 #define TYPE_SCSI_DISK_BASE "scsi-disk-base"
53 #define SCSI_DISK_BASE(obj) \
54 OBJECT_CHECK(SCSIDiskState, (obj), TYPE_SCSI_DISK_BASE)
55 #define SCSI_DISK_BASE_CLASS(klass) \
56 OBJECT_CLASS_CHECK(SCSIDiskClass, (klass), TYPE_SCSI_DISK_BASE)
57 #define SCSI_DISK_BASE_GET_CLASS(obj) \
58 OBJECT_GET_CLASS(SCSIDiskClass, (obj), TYPE_SCSI_DISK_BASE)
60 typedef struct SCSIDiskClass
{
61 SCSIDeviceClass parent_class
;
63 DMAIOFunc
*dma_writev
;
64 bool (*need_fua_emulation
)(SCSICommand
*cmd
);
67 typedef struct SCSIDiskReq
{
69 /* Both sector and sector_count are in terms of qemu 512 byte blocks. */
71 uint32_t sector_count
;
74 bool need_fua_emulation
;
78 unsigned char *status
;
81 #define SCSI_DISK_F_REMOVABLE 0
82 #define SCSI_DISK_F_DPOFUA 1
83 #define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
85 typedef 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
* 512, 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
/ 512;
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 BlockErrorAction action
= blk_get_error_action(s
->qdev
.conf
.blk
,
444 if (action
== BLOCK_ERROR_ACTION_REPORT
) {
446 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
450 /* A passthrough command has run and has produced sense data; check
451 * whether the error has to be handled by the guest or should rather
454 assert(r
->status
&& *r
->status
);
455 error
= scsi_sense_buf_to_errno(r
->req
.sense
, sizeof(r
->req
.sense
));
456 if (error
== ECANCELED
|| error
== EAGAIN
|| error
== ENOTCONN
||
458 /* These errors are handled by guest. */
459 scsi_req_complete(&r
->req
, *r
->status
);
464 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
467 scsi_check_condition(r
, SENSE_CODE(TARGET_FAILURE
));
470 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
473 scsi_check_condition(r
, SENSE_CODE(SPACE_ALLOC_FAILED
));
476 scsi_check_condition(r
, SENSE_CODE(IO_ERROR
));
481 blk_error_action(s
->qdev
.conf
.blk
, action
, is_read
, error
);
482 if (action
== BLOCK_ERROR_ACTION_IGNORE
) {
483 scsi_req_complete(&r
->req
, 0);
487 if (action
== BLOCK_ERROR_ACTION_STOP
) {
488 scsi_req_retry(&r
->req
);
493 static void scsi_write_complete_noio(SCSIDiskReq
*r
, int ret
)
497 assert (r
->req
.aiocb
== NULL
);
498 if (scsi_disk_req_check_error(r
, ret
, false)) {
502 n
= r
->qiov
.size
/ 512;
504 r
->sector_count
-= n
;
505 if (r
->sector_count
== 0) {
506 scsi_write_do_fua(r
);
509 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
510 trace_scsi_disk_write_complete_noio(r
->req
.tag
, r
->qiov
.size
);
511 scsi_req_data(&r
->req
, r
->qiov
.size
);
515 scsi_req_unref(&r
->req
);
518 static void scsi_write_complete(void * opaque
, int ret
)
520 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
521 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
523 assert (r
->req
.aiocb
!= NULL
);
526 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
528 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
530 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
532 scsi_write_complete_noio(r
, ret
);
533 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
536 static void scsi_write_data(SCSIRequest
*req
)
538 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
539 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
540 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
542 /* No data transfer may already be in progress */
543 assert(r
->req
.aiocb
== NULL
);
545 /* The request is used as the AIO opaque value, so add a ref. */
546 scsi_req_ref(&r
->req
);
547 if (r
->req
.cmd
.mode
!= SCSI_XFER_TO_DEV
) {
548 trace_scsi_disk_write_data_invalid();
549 scsi_write_complete_noio(r
, -EINVAL
);
553 if (!r
->req
.sg
&& !r
->qiov
.size
) {
554 /* Called for the first time. Ask the driver to send us more data. */
556 scsi_write_complete_noio(r
, 0);
559 if (!blk_is_available(req
->dev
->conf
.blk
)) {
560 scsi_write_complete_noio(r
, -ENOMEDIUM
);
564 if (r
->req
.cmd
.buf
[0] == VERIFY_10
|| r
->req
.cmd
.buf
[0] == VERIFY_12
||
565 r
->req
.cmd
.buf
[0] == VERIFY_16
) {
567 scsi_dma_complete_noio(r
, 0);
569 scsi_write_complete_noio(r
, 0);
575 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_WRITE
);
576 r
->req
.resid
-= r
->req
.sg
->size
;
577 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
578 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
580 sdc
->dma_writev
, r
, scsi_dma_complete
, r
,
581 DMA_DIRECTION_TO_DEVICE
);
583 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
584 r
->qiov
.size
, BLOCK_ACCT_WRITE
);
585 r
->req
.aiocb
= sdc
->dma_writev(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
586 scsi_write_complete
, r
, r
);
590 /* Return a pointer to the data buffer. */
591 static uint8_t *scsi_get_buf(SCSIRequest
*req
)
593 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
595 return (uint8_t *)r
->iov
.iov_base
;
598 static int scsi_disk_emulate_vpd_page(SCSIRequest
*req
, uint8_t *outbuf
)
600 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
601 uint8_t page_code
= req
->cmd
.buf
[2];
602 int start
, buflen
= 0;
604 outbuf
[buflen
++] = s
->qdev
.type
& 0x1f;
605 outbuf
[buflen
++] = page_code
;
606 outbuf
[buflen
++] = 0x00;
607 outbuf
[buflen
++] = 0x00;
611 case 0x00: /* Supported page codes, mandatory */
613 trace_scsi_disk_emulate_vpd_page_00(req
->cmd
.xfer
);
614 outbuf
[buflen
++] = 0x00; /* list of supported pages (this page) */
616 outbuf
[buflen
++] = 0x80; /* unit serial number */
618 outbuf
[buflen
++] = 0x83; /* device identification */
619 if (s
->qdev
.type
== TYPE_DISK
) {
620 outbuf
[buflen
++] = 0xb0; /* block limits */
621 outbuf
[buflen
++] = 0xb1; /* block device characteristics */
622 outbuf
[buflen
++] = 0xb2; /* thin provisioning */
626 case 0x80: /* Device serial number, optional */
631 trace_scsi_disk_emulate_vpd_page_80_not_supported();
635 l
= strlen(s
->serial
);
640 trace_scsi_disk_emulate_vpd_page_80(req
->cmd
.xfer
);
641 memcpy(outbuf
+ buflen
, s
->serial
, l
);
646 case 0x83: /* Device identification page, mandatory */
648 int id_len
= s
->device_id
? MIN(strlen(s
->device_id
), 255 - 8) : 0;
650 trace_scsi_disk_emulate_vpd_page_83(req
->cmd
.xfer
);
653 outbuf
[buflen
++] = 0x2; /* ASCII */
654 outbuf
[buflen
++] = 0; /* not officially assigned */
655 outbuf
[buflen
++] = 0; /* reserved */
656 outbuf
[buflen
++] = id_len
; /* length of data following */
657 memcpy(outbuf
+ buflen
, s
->device_id
, id_len
);
662 outbuf
[buflen
++] = 0x1; /* Binary */
663 outbuf
[buflen
++] = 0x3; /* NAA */
664 outbuf
[buflen
++] = 0; /* reserved */
665 outbuf
[buflen
++] = 8;
666 stq_be_p(&outbuf
[buflen
], s
->qdev
.wwn
);
670 if (s
->qdev
.port_wwn
) {
671 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
672 outbuf
[buflen
++] = 0x93; /* PIV / Target port / NAA */
673 outbuf
[buflen
++] = 0; /* reserved */
674 outbuf
[buflen
++] = 8;
675 stq_be_p(&outbuf
[buflen
], s
->qdev
.port_wwn
);
680 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
682 /* PIV/Target port/relative target port */
683 outbuf
[buflen
++] = 0x94;
685 outbuf
[buflen
++] = 0; /* reserved */
686 outbuf
[buflen
++] = 4;
687 stw_be_p(&outbuf
[buflen
+ 2], s
->port_index
);
692 case 0xb0: /* block limits */
694 SCSIBlockLimits bl
= {};
696 if (s
->qdev
.type
== TYPE_ROM
) {
697 trace_scsi_disk_emulate_vpd_page_b0_not_supported();
702 s
->qdev
.conf
.discard_granularity
/ s
->qdev
.blocksize
;
704 s
->qdev
.conf
.min_io_size
/ s
->qdev
.blocksize
;
706 s
->qdev
.conf
.opt_io_size
/ s
->qdev
.blocksize
;
707 bl
.max_unmap_sectors
=
708 s
->max_unmap_size
/ s
->qdev
.blocksize
;
710 s
->max_io_size
/ s
->qdev
.blocksize
;
711 /* 255 descriptors fit in 4 KiB with an 8-byte header */
712 bl
.max_unmap_descr
= 255;
714 if (s
->qdev
.type
== TYPE_DISK
) {
715 int max_transfer_blk
= blk_get_max_transfer(s
->qdev
.conf
.blk
);
716 int max_io_sectors_blk
=
717 max_transfer_blk
/ s
->qdev
.blocksize
;
720 MIN_NON_ZERO(max_io_sectors_blk
, bl
.max_io_sectors
);
722 buflen
+= scsi_emulate_block_limits(outbuf
+ buflen
, &bl
);
725 case 0xb1: /* block device characteristics */
728 outbuf
[4] = (s
->rotation_rate
>> 8) & 0xff;
729 outbuf
[5] = s
->rotation_rate
& 0xff;
730 outbuf
[6] = 0; /* PRODUCT TYPE */
731 outbuf
[7] = 0; /* WABEREQ | WACEREQ | NOMINAL FORM FACTOR */
732 outbuf
[8] = 0; /* VBULS */
735 case 0xb2: /* thin provisioning */
739 outbuf
[5] = 0xe0; /* unmap & write_same 10/16 all supported */
740 outbuf
[6] = s
->qdev
.conf
.discard_granularity
? 2 : 1;
748 assert(buflen
- start
<= 255);
749 outbuf
[start
- 1] = buflen
- start
;
753 static int scsi_disk_emulate_inquiry(SCSIRequest
*req
, uint8_t *outbuf
)
755 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
758 if (req
->cmd
.buf
[1] & 0x1) {
759 /* Vital product data */
760 return scsi_disk_emulate_vpd_page(req
, outbuf
);
763 /* Standard INQUIRY data */
764 if (req
->cmd
.buf
[2] != 0) {
769 buflen
= req
->cmd
.xfer
;
770 if (buflen
> SCSI_MAX_INQUIRY_LEN
) {
771 buflen
= SCSI_MAX_INQUIRY_LEN
;
774 outbuf
[0] = s
->qdev
.type
& 0x1f;
775 outbuf
[1] = (s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) ? 0x80 : 0;
777 strpadcpy((char *) &outbuf
[16], 16, s
->product
, ' ');
778 strpadcpy((char *) &outbuf
[8], 8, s
->vendor
, ' ');
780 memset(&outbuf
[32], 0, 4);
781 memcpy(&outbuf
[32], s
->version
, MIN(4, strlen(s
->version
)));
783 * We claim conformance to SPC-3, which is required for guests
784 * to ask for modern features like READ CAPACITY(16) or the
785 * block characteristics VPD page by default. Not all of SPC-3
786 * is actually implemented, but we're good enough.
788 outbuf
[2] = s
->qdev
.default_scsi_version
;
789 outbuf
[3] = 2 | 0x10; /* Format 2, HiSup */
792 outbuf
[4] = buflen
- 5; /* Additional Length = (Len - 1) - 4 */
794 /* If the allocation length of CDB is too small,
795 the additional length is not adjusted */
799 /* Sync data transfer and TCQ. */
800 outbuf
[7] = 0x10 | (req
->bus
->info
->tcq
? 0x02 : 0);
804 static inline bool media_is_dvd(SCSIDiskState
*s
)
807 if (s
->qdev
.type
!= TYPE_ROM
) {
810 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
813 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
814 return nb_sectors
> CD_MAX_SECTORS
;
817 static inline bool media_is_cd(SCSIDiskState
*s
)
820 if (s
->qdev
.type
!= TYPE_ROM
) {
823 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
826 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
827 return nb_sectors
<= CD_MAX_SECTORS
;
830 static int scsi_read_disc_information(SCSIDiskState
*s
, SCSIDiskReq
*r
,
833 uint8_t type
= r
->req
.cmd
.buf
[1] & 7;
835 if (s
->qdev
.type
!= TYPE_ROM
) {
839 /* Types 1/2 are only defined for Blu-Ray. */
841 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
845 memset(outbuf
, 0, 34);
847 outbuf
[2] = 0xe; /* last session complete, disc finalized */
848 outbuf
[3] = 1; /* first track on disc */
849 outbuf
[4] = 1; /* # of sessions */
850 outbuf
[5] = 1; /* first track of last session */
851 outbuf
[6] = 1; /* last track of last session */
852 outbuf
[7] = 0x20; /* unrestricted use */
853 outbuf
[8] = 0x00; /* CD-ROM or DVD-ROM */
854 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
855 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
856 /* 24-31: disc bar code */
857 /* 32: disc application code */
858 /* 33: number of OPC tables */
863 static int scsi_read_dvd_structure(SCSIDiskState
*s
, SCSIDiskReq
*r
,
866 static const int rds_caps_size
[5] = {
873 uint8_t media
= r
->req
.cmd
.buf
[1];
874 uint8_t layer
= r
->req
.cmd
.buf
[6];
875 uint8_t format
= r
->req
.cmd
.buf
[7];
878 if (s
->qdev
.type
!= TYPE_ROM
) {
882 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
886 if (format
!= 0xff) {
887 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
888 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
891 if (media_is_cd(s
)) {
892 scsi_check_condition(r
, SENSE_CODE(INCOMPATIBLE_FORMAT
));
895 if (format
>= ARRAY_SIZE(rds_caps_size
)) {
898 size
= rds_caps_size
[format
];
899 memset(outbuf
, 0, size
);
904 /* Physical format information */
909 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
911 outbuf
[4] = 1; /* DVD-ROM, part version 1 */
912 outbuf
[5] = 0xf; /* 120mm disc, minimum rate unspecified */
913 outbuf
[6] = 1; /* one layer, read-only (per MMC-2 spec) */
914 outbuf
[7] = 0; /* default densities */
916 stl_be_p(&outbuf
[12], (nb_sectors
>> 2) - 1); /* end sector */
917 stl_be_p(&outbuf
[16], (nb_sectors
>> 2) - 1); /* l0 end sector */
921 case 0x01: /* DVD copyright information, all zeros */
924 case 0x03: /* BCA information - invalid field for no BCA info */
927 case 0x04: /* DVD disc manufacturing information, all zeros */
930 case 0xff: { /* List capabilities */
933 for (i
= 0; i
< ARRAY_SIZE(rds_caps_size
); i
++) {
934 if (!rds_caps_size
[i
]) {
938 outbuf
[size
+ 1] = 0x40; /* Not writable, readable */
939 stw_be_p(&outbuf
[size
+ 2], rds_caps_size
[i
]);
949 /* Size of buffer, not including 2 byte size field */
950 stw_be_p(outbuf
, size
- 2);
957 static int scsi_event_status_media(SCSIDiskState
*s
, uint8_t *outbuf
)
959 uint8_t event_code
, media_status
;
963 media_status
= MS_TRAY_OPEN
;
964 } else if (blk_is_inserted(s
->qdev
.conf
.blk
)) {
965 media_status
= MS_MEDIA_PRESENT
;
968 /* Event notification descriptor */
969 event_code
= MEC_NO_CHANGE
;
970 if (media_status
!= MS_TRAY_OPEN
) {
971 if (s
->media_event
) {
972 event_code
= MEC_NEW_MEDIA
;
973 s
->media_event
= false;
974 } else if (s
->eject_request
) {
975 event_code
= MEC_EJECT_REQUESTED
;
976 s
->eject_request
= false;
980 outbuf
[0] = event_code
;
981 outbuf
[1] = media_status
;
983 /* These fields are reserved, just clear them. */
989 static int scsi_get_event_status_notification(SCSIDiskState
*s
, SCSIDiskReq
*r
,
993 uint8_t *buf
= r
->req
.cmd
.buf
;
994 uint8_t notification_class_request
= buf
[4];
995 if (s
->qdev
.type
!= TYPE_ROM
) {
998 if ((buf
[1] & 1) == 0) {
1004 outbuf
[0] = outbuf
[1] = 0;
1005 outbuf
[3] = 1 << GESN_MEDIA
; /* supported events */
1006 if (notification_class_request
& (1 << GESN_MEDIA
)) {
1007 outbuf
[2] = GESN_MEDIA
;
1008 size
+= scsi_event_status_media(s
, &outbuf
[size
]);
1012 stw_be_p(outbuf
, size
- 4);
1016 static int scsi_get_configuration(SCSIDiskState
*s
, uint8_t *outbuf
)
1020 if (s
->qdev
.type
!= TYPE_ROM
) {
1024 if (media_is_dvd(s
)) {
1025 current
= MMC_PROFILE_DVD_ROM
;
1026 } else if (media_is_cd(s
)) {
1027 current
= MMC_PROFILE_CD_ROM
;
1029 current
= MMC_PROFILE_NONE
;
1032 memset(outbuf
, 0, 40);
1033 stl_be_p(&outbuf
[0], 36); /* Bytes after the data length field */
1034 stw_be_p(&outbuf
[6], current
);
1035 /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
1036 outbuf
[10] = 0x03; /* persistent, current */
1037 outbuf
[11] = 8; /* two profiles */
1038 stw_be_p(&outbuf
[12], MMC_PROFILE_DVD_ROM
);
1039 outbuf
[14] = (current
== MMC_PROFILE_DVD_ROM
);
1040 stw_be_p(&outbuf
[16], MMC_PROFILE_CD_ROM
);
1041 outbuf
[18] = (current
== MMC_PROFILE_CD_ROM
);
1042 /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
1043 stw_be_p(&outbuf
[20], 1);
1044 outbuf
[22] = 0x08 | 0x03; /* version 2, persistent, current */
1046 stl_be_p(&outbuf
[24], 1); /* SCSI */
1047 outbuf
[28] = 1; /* DBE = 1, mandatory */
1048 /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
1049 stw_be_p(&outbuf
[32], 3);
1050 outbuf
[34] = 0x08 | 0x03; /* version 2, persistent, current */
1052 outbuf
[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
1053 /* TODO: Random readable, CD read, DVD read, drive serial number,
1058 static int scsi_emulate_mechanism_status(SCSIDiskState
*s
, uint8_t *outbuf
)
1060 if (s
->qdev
.type
!= TYPE_ROM
) {
1063 memset(outbuf
, 0, 8);
1064 outbuf
[5] = 1; /* CD-ROM */
1068 static int mode_sense_page(SCSIDiskState
*s
, int page
, uint8_t **p_outbuf
,
1071 static const int mode_sense_valid
[0x3f] = {
1072 [MODE_PAGE_HD_GEOMETRY
] = (1 << TYPE_DISK
),
1073 [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
] = (1 << TYPE_DISK
),
1074 [MODE_PAGE_CACHING
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1075 [MODE_PAGE_R_W_ERROR
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1076 [MODE_PAGE_AUDIO_CTL
] = (1 << TYPE_ROM
),
1077 [MODE_PAGE_CAPABILITIES
] = (1 << TYPE_ROM
),
1080 uint8_t *p
= *p_outbuf
+ 2;
1083 if ((mode_sense_valid
[page
] & (1 << s
->qdev
.type
)) == 0) {
1088 * If Changeable Values are requested, a mask denoting those mode parameters
1089 * that are changeable shall be returned. As we currently don't support
1090 * parameter changes via MODE_SELECT all bits are returned set to zero.
1091 * The buffer was already menset to zero by the caller of this function.
1093 * The offsets here are off by two compared to the descriptions in the
1094 * SCSI specs, because those include a 2-byte header. This is unfortunate,
1095 * but it is done so that offsets are consistent within our implementation
1096 * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
1097 * 2-byte and 4-byte headers.
1100 case MODE_PAGE_HD_GEOMETRY
:
1102 if (page_control
== 1) { /* Changeable Values */
1105 /* if a geometry hint is available, use it */
1106 p
[0] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1107 p
[1] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1108 p
[2] = s
->qdev
.conf
.cyls
& 0xff;
1109 p
[3] = s
->qdev
.conf
.heads
& 0xff;
1110 /* Write precomp start cylinder, disabled */
1111 p
[4] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1112 p
[5] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1113 p
[6] = s
->qdev
.conf
.cyls
& 0xff;
1114 /* Reduced current start cylinder, disabled */
1115 p
[7] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1116 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1117 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1118 /* Device step rate [ns], 200ns */
1121 /* Landing zone cylinder */
1125 /* Medium rotation rate [rpm], 5400 rpm */
1126 p
[18] = (5400 >> 8) & 0xff;
1127 p
[19] = 5400 & 0xff;
1130 case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
:
1132 if (page_control
== 1) { /* Changeable Values */
1135 /* Transfer rate [kbit/s], 5Mbit/s */
1138 /* if a geometry hint is available, use it */
1139 p
[2] = s
->qdev
.conf
.heads
& 0xff;
1140 p
[3] = s
->qdev
.conf
.secs
& 0xff;
1141 p
[4] = s
->qdev
.blocksize
>> 8;
1142 p
[6] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1143 p
[7] = s
->qdev
.conf
.cyls
& 0xff;
1144 /* Write precomp start cylinder, disabled */
1145 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1146 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1147 /* Reduced current start cylinder, disabled */
1148 p
[10] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1149 p
[11] = s
->qdev
.conf
.cyls
& 0xff;
1150 /* Device step rate [100us], 100us */
1153 /* Device step pulse width [us], 1us */
1155 /* Device head settle delay [100us], 100us */
1158 /* Motor on delay [0.1s], 0.1s */
1160 /* Motor off delay [0.1s], 0.1s */
1162 /* Medium rotation rate [rpm], 5400 rpm */
1163 p
[26] = (5400 >> 8) & 0xff;
1164 p
[27] = 5400 & 0xff;
1167 case MODE_PAGE_CACHING
:
1169 if (page_control
== 1 || /* Changeable Values */
1170 blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1175 case MODE_PAGE_R_W_ERROR
:
1177 if (page_control
== 1) { /* Changeable Values */
1180 p
[0] = 0x80; /* Automatic Write Reallocation Enabled */
1181 if (s
->qdev
.type
== TYPE_ROM
) {
1182 p
[1] = 0x20; /* Read Retry Count */
1186 case MODE_PAGE_AUDIO_CTL
:
1190 case MODE_PAGE_CAPABILITIES
:
1192 if (page_control
== 1) { /* Changeable Values */
1196 p
[0] = 0x3b; /* CD-R & CD-RW read */
1197 p
[1] = 0; /* Writing not supported */
1198 p
[2] = 0x7f; /* Audio, composite, digital out,
1199 mode 2 form 1&2, multi session */
1200 p
[3] = 0xff; /* CD DA, DA accurate, RW supported,
1201 RW corrected, C2 errors, ISRC,
1203 p
[4] = 0x2d | (s
->tray_locked
? 2 : 0);
1204 /* Locking supported, jumper present, eject, tray */
1205 p
[5] = 0; /* no volume & mute control, no
1207 p
[6] = (50 * 176) >> 8; /* 50x read speed */
1208 p
[7] = (50 * 176) & 0xff;
1209 p
[8] = 2 >> 8; /* Two volume levels */
1211 p
[10] = 2048 >> 8; /* 2M buffer */
1212 p
[11] = 2048 & 0xff;
1213 p
[12] = (16 * 176) >> 8; /* 16x read speed current */
1214 p
[13] = (16 * 176) & 0xff;
1215 p
[16] = (16 * 176) >> 8; /* 16x write speed */
1216 p
[17] = (16 * 176) & 0xff;
1217 p
[18] = (16 * 176) >> 8; /* 16x write speed current */
1218 p
[19] = (16 * 176) & 0xff;
1225 assert(length
< 256);
1226 (*p_outbuf
)[0] = page
;
1227 (*p_outbuf
)[1] = length
;
1228 *p_outbuf
+= length
+ 2;
1232 static int scsi_disk_emulate_mode_sense(SCSIDiskReq
*r
, uint8_t *outbuf
)
1234 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1235 uint64_t nb_sectors
;
1237 int page
, buflen
, ret
, page_control
;
1239 uint8_t dev_specific_param
;
1241 dbd
= (r
->req
.cmd
.buf
[1] & 0x8) != 0;
1242 page
= r
->req
.cmd
.buf
[2] & 0x3f;
1243 page_control
= (r
->req
.cmd
.buf
[2] & 0xc0) >> 6;
1245 trace_scsi_disk_emulate_mode_sense((r
->req
.cmd
.buf
[0] == MODE_SENSE
) ? 6 :
1246 10, page
, r
->req
.cmd
.xfer
, page_control
);
1247 memset(outbuf
, 0, r
->req
.cmd
.xfer
);
1250 if (s
->qdev
.type
== TYPE_DISK
) {
1251 dev_specific_param
= s
->features
& (1 << SCSI_DISK_F_DPOFUA
) ? 0x10 : 0;
1252 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1253 dev_specific_param
|= 0x80; /* Readonly. */
1256 /* MMC prescribes that CD/DVD drives have no block descriptors,
1257 * and defines no device-specific parameter. */
1258 dev_specific_param
= 0x00;
1262 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1263 p
[1] = 0; /* Default media type. */
1264 p
[2] = dev_specific_param
;
1265 p
[3] = 0; /* Block descriptor length. */
1267 } else { /* MODE_SENSE_10 */
1268 p
[2] = 0; /* Default media type. */
1269 p
[3] = dev_specific_param
;
1270 p
[6] = p
[7] = 0; /* Block descriptor length. */
1274 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1275 if (!dbd
&& nb_sectors
) {
1276 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1277 outbuf
[3] = 8; /* Block descriptor length */
1278 } else { /* MODE_SENSE_10 */
1279 outbuf
[7] = 8; /* Block descriptor length */
1281 nb_sectors
/= (s
->qdev
.blocksize
/ 512);
1282 if (nb_sectors
> 0xffffff) {
1285 p
[0] = 0; /* media density code */
1286 p
[1] = (nb_sectors
>> 16) & 0xff;
1287 p
[2] = (nb_sectors
>> 8) & 0xff;
1288 p
[3] = nb_sectors
& 0xff;
1289 p
[4] = 0; /* reserved */
1290 p
[5] = 0; /* bytes 5-7 are the sector size in bytes */
1291 p
[6] = s
->qdev
.blocksize
>> 8;
1296 if (page_control
== 3) {
1298 scsi_check_condition(r
, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED
));
1303 for (page
= 0; page
<= 0x3e; page
++) {
1304 mode_sense_page(s
, page
, &p
, page_control
);
1307 ret
= mode_sense_page(s
, page
, &p
, page_control
);
1313 buflen
= p
- outbuf
;
1315 * The mode data length field specifies the length in bytes of the
1316 * following data that is available to be transferred. The mode data
1317 * length does not include itself.
1319 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1320 outbuf
[0] = buflen
- 1;
1321 } else { /* MODE_SENSE_10 */
1322 outbuf
[0] = ((buflen
- 2) >> 8) & 0xff;
1323 outbuf
[1] = (buflen
- 2) & 0xff;
1328 static int scsi_disk_emulate_read_toc(SCSIRequest
*req
, uint8_t *outbuf
)
1330 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1331 int start_track
, format
, msf
, toclen
;
1332 uint64_t nb_sectors
;
1334 msf
= req
->cmd
.buf
[1] & 2;
1335 format
= req
->cmd
.buf
[2] & 0xf;
1336 start_track
= req
->cmd
.buf
[6];
1337 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1338 trace_scsi_disk_emulate_read_toc(start_track
, format
, msf
>> 1);
1339 nb_sectors
/= s
->qdev
.blocksize
/ 512;
1342 toclen
= cdrom_read_toc(nb_sectors
, outbuf
, msf
, start_track
);
1345 /* multi session : only a single session defined */
1347 memset(outbuf
, 0, 12);
1353 toclen
= cdrom_read_toc_raw(nb_sectors
, outbuf
, msf
, start_track
);
1361 static int scsi_disk_emulate_start_stop(SCSIDiskReq
*r
)
1363 SCSIRequest
*req
= &r
->req
;
1364 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1365 bool start
= req
->cmd
.buf
[4] & 1;
1366 bool loej
= req
->cmd
.buf
[4] & 2; /* load on start, eject on !start */
1367 int pwrcnd
= req
->cmd
.buf
[4] & 0xf0;
1370 /* eject/load only happens for power condition == 0 */
1374 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) && loej
) {
1375 if (!start
&& !s
->tray_open
&& s
->tray_locked
) {
1376 scsi_check_condition(r
,
1377 blk_is_inserted(s
->qdev
.conf
.blk
)
1378 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED
)
1379 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED
));
1383 if (s
->tray_open
!= !start
) {
1384 blk_eject(s
->qdev
.conf
.blk
, !start
);
1385 s
->tray_open
= !start
;
1391 static void scsi_disk_emulate_read_data(SCSIRequest
*req
)
1393 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1394 int buflen
= r
->iov
.iov_len
;
1397 trace_scsi_disk_emulate_read_data(buflen
);
1400 scsi_req_data(&r
->req
, buflen
);
1404 /* This also clears the sense buffer for REQUEST SENSE. */
1405 scsi_req_complete(&r
->req
, GOOD
);
1408 static int scsi_disk_check_mode_select(SCSIDiskState
*s
, int page
,
1409 uint8_t *inbuf
, int inlen
)
1411 uint8_t mode_current
[SCSI_MAX_MODE_LEN
];
1412 uint8_t mode_changeable
[SCSI_MAX_MODE_LEN
];
1414 int len
, expected_len
, changeable_len
, i
;
1416 /* The input buffer does not include the page header, so it is
1419 expected_len
= inlen
+ 2;
1420 if (expected_len
> SCSI_MAX_MODE_LEN
) {
1425 memset(mode_current
, 0, inlen
+ 2);
1426 len
= mode_sense_page(s
, page
, &p
, 0);
1427 if (len
< 0 || len
!= expected_len
) {
1431 p
= mode_changeable
;
1432 memset(mode_changeable
, 0, inlen
+ 2);
1433 changeable_len
= mode_sense_page(s
, page
, &p
, 1);
1434 assert(changeable_len
== len
);
1436 /* Check that unchangeable bits are the same as what MODE SENSE
1439 for (i
= 2; i
< len
; i
++) {
1440 if (((mode_current
[i
] ^ inbuf
[i
- 2]) & ~mode_changeable
[i
]) != 0) {
1447 static void scsi_disk_apply_mode_select(SCSIDiskState
*s
, int page
, uint8_t *p
)
1450 case MODE_PAGE_CACHING
:
1451 blk_set_enable_write_cache(s
->qdev
.conf
.blk
, (p
[0] & 4) != 0);
1459 static int mode_select_pages(SCSIDiskReq
*r
, uint8_t *p
, int len
, bool change
)
1461 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1464 int page
, subpage
, page_len
;
1466 /* Parse both possible formats for the mode page headers. */
1470 goto invalid_param_len
;
1473 page_len
= lduw_be_p(&p
[2]);
1478 goto invalid_param_len
;
1489 if (page_len
> len
) {
1490 goto invalid_param_len
;
1494 if (scsi_disk_check_mode_select(s
, page
, p
, page_len
) < 0) {
1498 scsi_disk_apply_mode_select(s
, page
, p
);
1507 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1511 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1515 static void scsi_disk_emulate_mode_select(SCSIDiskReq
*r
, uint8_t *inbuf
)
1517 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1519 int cmd
= r
->req
.cmd
.buf
[0];
1520 int len
= r
->req
.cmd
.xfer
;
1521 int hdr_len
= (cmd
== MODE_SELECT
? 4 : 8);
1525 /* We only support PF=1, SP=0. */
1526 if ((r
->req
.cmd
.buf
[1] & 0x11) != 0x10) {
1530 if (len
< hdr_len
) {
1531 goto invalid_param_len
;
1534 bd_len
= (cmd
== MODE_SELECT
? p
[3] : lduw_be_p(&p
[6]));
1538 goto invalid_param_len
;
1540 if (bd_len
!= 0 && bd_len
!= 8) {
1547 /* Ensure no change is made if there is an error! */
1548 for (pass
= 0; pass
< 2; pass
++) {
1549 if (mode_select_pages(r
, p
, len
, pass
== 1) < 0) {
1554 if (!blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1555 /* The request is used as the AIO opaque value, so add a ref. */
1556 scsi_req_ref(&r
->req
);
1557 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
1559 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
1563 scsi_req_complete(&r
->req
, GOOD
);
1567 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1571 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1575 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1578 static inline bool check_lba_range(SCSIDiskState
*s
,
1579 uint64_t sector_num
, uint32_t nb_sectors
)
1582 * The first line tests that no overflow happens when computing the last
1583 * sector. The second line tests that the last accessed sector is in
1586 * Careful, the computations should not underflow for nb_sectors == 0,
1587 * and a 0-block read to the first LBA beyond the end of device is
1590 return (sector_num
<= sector_num
+ nb_sectors
&&
1591 sector_num
+ nb_sectors
<= s
->qdev
.max_lba
+ 1);
1594 typedef struct UnmapCBData
{
1600 static void scsi_unmap_complete(void *opaque
, int ret
);
1602 static void scsi_unmap_complete_noio(UnmapCBData
*data
, int ret
)
1604 SCSIDiskReq
*r
= data
->r
;
1605 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1606 uint64_t sector_num
;
1607 uint32_t nb_sectors
;
1609 assert(r
->req
.aiocb
== NULL
);
1610 if (scsi_disk_req_check_error(r
, ret
, false)) {
1614 if (data
->count
> 0) {
1615 sector_num
= ldq_be_p(&data
->inbuf
[0]);
1616 nb_sectors
= ldl_be_p(&data
->inbuf
[8]) & 0xffffffffULL
;
1617 if (!check_lba_range(s
, sector_num
, nb_sectors
)) {
1618 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1622 r
->req
.aiocb
= blk_aio_pdiscard(s
->qdev
.conf
.blk
,
1623 sector_num
* s
->qdev
.blocksize
,
1624 nb_sectors
* s
->qdev
.blocksize
,
1625 scsi_unmap_complete
, data
);
1631 scsi_req_complete(&r
->req
, GOOD
);
1634 scsi_req_unref(&r
->req
);
1638 static void scsi_unmap_complete(void *opaque
, int ret
)
1640 UnmapCBData
*data
= opaque
;
1641 SCSIDiskReq
*r
= data
->r
;
1642 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1644 assert(r
->req
.aiocb
!= NULL
);
1645 r
->req
.aiocb
= NULL
;
1647 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1648 scsi_unmap_complete_noio(data
, ret
);
1649 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1652 static void scsi_disk_emulate_unmap(SCSIDiskReq
*r
, uint8_t *inbuf
)
1654 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1656 int len
= r
->req
.cmd
.xfer
;
1659 /* Reject ANCHOR=1. */
1660 if (r
->req
.cmd
.buf
[1] & 0x1) {
1665 goto invalid_param_len
;
1667 if (len
< lduw_be_p(&p
[0]) + 2) {
1668 goto invalid_param_len
;
1670 if (len
< lduw_be_p(&p
[2]) + 8) {
1671 goto invalid_param_len
;
1673 if (lduw_be_p(&p
[2]) & 15) {
1674 goto invalid_param_len
;
1677 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1678 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1682 data
= g_new0(UnmapCBData
, 1);
1684 data
->inbuf
= &p
[8];
1685 data
->count
= lduw_be_p(&p
[2]) >> 4;
1687 /* The matching unref is in scsi_unmap_complete, before data is freed. */
1688 scsi_req_ref(&r
->req
);
1689 scsi_unmap_complete_noio(data
, 0);
1693 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1697 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1700 typedef struct WriteSameCBData
{
1708 static void scsi_write_same_complete(void *opaque
, int ret
)
1710 WriteSameCBData
*data
= opaque
;
1711 SCSIDiskReq
*r
= data
->r
;
1712 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1714 assert(r
->req
.aiocb
!= NULL
);
1715 r
->req
.aiocb
= NULL
;
1716 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1717 if (scsi_disk_req_check_error(r
, ret
, true)) {
1721 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1723 data
->nb_sectors
-= data
->iov
.iov_len
/ 512;
1724 data
->sector
+= data
->iov
.iov_len
/ 512;
1725 data
->iov
.iov_len
= MIN(data
->nb_sectors
* 512, data
->iov
.iov_len
);
1726 if (data
->iov
.iov_len
) {
1727 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1728 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1729 /* Reinitialize qiov, to handle unaligned WRITE SAME request
1730 * where final qiov may need smaller size */
1731 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1732 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1733 data
->sector
<< BDRV_SECTOR_BITS
,
1735 scsi_write_same_complete
, data
);
1736 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1740 scsi_req_complete(&r
->req
, GOOD
);
1743 scsi_req_unref(&r
->req
);
1744 qemu_vfree(data
->iov
.iov_base
);
1746 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1749 static void scsi_disk_emulate_write_same(SCSIDiskReq
*r
, uint8_t *inbuf
)
1751 SCSIRequest
*req
= &r
->req
;
1752 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1753 uint32_t nb_sectors
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
1754 WriteSameCBData
*data
;
1758 /* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */
1759 if (nb_sectors
== 0 || (req
->cmd
.buf
[1] & 0x16)) {
1760 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1764 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1765 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1768 if (!check_lba_range(s
, r
->req
.cmd
.lba
, nb_sectors
)) {
1769 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1773 if ((req
->cmd
.buf
[1] & 0x1) || buffer_is_zero(inbuf
, s
->qdev
.blocksize
)) {
1774 int flags
= (req
->cmd
.buf
[1] & 0x8) ? BDRV_REQ_MAY_UNMAP
: 0;
1776 /* The request is used as the AIO opaque value, so add a ref. */
1777 scsi_req_ref(&r
->req
);
1778 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1779 nb_sectors
* s
->qdev
.blocksize
,
1781 r
->req
.aiocb
= blk_aio_pwrite_zeroes(s
->qdev
.conf
.blk
,
1782 r
->req
.cmd
.lba
* s
->qdev
.blocksize
,
1783 nb_sectors
* s
->qdev
.blocksize
,
1784 flags
, scsi_aio_complete
, r
);
1788 data
= g_new0(WriteSameCBData
, 1);
1790 data
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ 512);
1791 data
->nb_sectors
= nb_sectors
* (s
->qdev
.blocksize
/ 512);
1792 data
->iov
.iov_len
= MIN(data
->nb_sectors
* 512, SCSI_WRITE_SAME_MAX
);
1793 data
->iov
.iov_base
= buf
= blk_blockalign(s
->qdev
.conf
.blk
,
1795 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1797 for (i
= 0; i
< data
->iov
.iov_len
; i
+= s
->qdev
.blocksize
) {
1798 memcpy(&buf
[i
], inbuf
, s
->qdev
.blocksize
);
1801 scsi_req_ref(&r
->req
);
1802 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1803 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1804 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1805 data
->sector
<< BDRV_SECTOR_BITS
,
1807 scsi_write_same_complete
, data
);
1810 static void scsi_disk_emulate_write_data(SCSIRequest
*req
)
1812 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1814 if (r
->iov
.iov_len
) {
1815 int buflen
= r
->iov
.iov_len
;
1816 trace_scsi_disk_emulate_write_data(buflen
);
1818 scsi_req_data(&r
->req
, buflen
);
1822 switch (req
->cmd
.buf
[0]) {
1824 case MODE_SELECT_10
:
1825 /* This also clears the sense buffer for REQUEST SENSE. */
1826 scsi_disk_emulate_mode_select(r
, r
->iov
.iov_base
);
1830 scsi_disk_emulate_unmap(r
, r
->iov
.iov_base
);
1836 if (r
->req
.status
== -1) {
1837 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1843 scsi_disk_emulate_write_same(r
, r
->iov
.iov_base
);
1851 static int32_t scsi_disk_emulate_command(SCSIRequest
*req
, uint8_t *buf
)
1853 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1854 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1855 uint64_t nb_sectors
;
1859 switch (req
->cmd
.buf
[0]) {
1868 case ALLOW_MEDIUM_REMOVAL
:
1869 case GET_CONFIGURATION
:
1870 case GET_EVENT_STATUS_NOTIFICATION
:
1871 case MECHANISM_STATUS
:
1876 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
1877 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
1884 * FIXME: we shouldn't return anything bigger than 4k, but the code
1885 * requires the buffer to be as big as req->cmd.xfer in several
1886 * places. So, do not allow CDBs with a very large ALLOCATION
1887 * LENGTH. The real fix would be to modify scsi_read_data and
1888 * dma_buf_read, so that they return data beyond the buflen
1891 if (req
->cmd
.xfer
> 65536) {
1892 goto illegal_request
;
1894 r
->buflen
= MAX(4096, req
->cmd
.xfer
);
1896 if (!r
->iov
.iov_base
) {
1897 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
1900 buflen
= req
->cmd
.xfer
;
1901 outbuf
= r
->iov
.iov_base
;
1902 memset(outbuf
, 0, r
->buflen
);
1903 switch (req
->cmd
.buf
[0]) {
1904 case TEST_UNIT_READY
:
1905 assert(blk_is_available(s
->qdev
.conf
.blk
));
1908 buflen
= scsi_disk_emulate_inquiry(req
, outbuf
);
1910 goto illegal_request
;
1915 buflen
= scsi_disk_emulate_mode_sense(r
, outbuf
);
1917 goto illegal_request
;
1921 buflen
= scsi_disk_emulate_read_toc(req
, outbuf
);
1923 goto illegal_request
;
1927 if (req
->cmd
.buf
[1] & 1) {
1928 goto illegal_request
;
1932 if (req
->cmd
.buf
[1] & 3) {
1933 goto illegal_request
;
1937 if (req
->cmd
.buf
[1] & 1) {
1938 goto illegal_request
;
1942 if (req
->cmd
.buf
[1] & 3) {
1943 goto illegal_request
;
1947 if (scsi_disk_emulate_start_stop(r
) < 0) {
1951 case ALLOW_MEDIUM_REMOVAL
:
1952 s
->tray_locked
= req
->cmd
.buf
[4] & 1;
1953 blk_lock_medium(s
->qdev
.conf
.blk
, req
->cmd
.buf
[4] & 1);
1955 case READ_CAPACITY_10
:
1956 /* The normal LEN field for this command is zero. */
1957 memset(outbuf
, 0, 8);
1958 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1960 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
1963 if ((req
->cmd
.buf
[8] & 1) == 0 && req
->cmd
.lba
) {
1964 goto illegal_request
;
1966 nb_sectors
/= s
->qdev
.blocksize
/ 512;
1967 /* Returned value is the address of the last sector. */
1969 /* Remember the new size for read/write sanity checking. */
1970 s
->qdev
.max_lba
= nb_sectors
;
1971 /* Clip to 2TB, instead of returning capacity modulo 2TB. */
1972 if (nb_sectors
> UINT32_MAX
) {
1973 nb_sectors
= UINT32_MAX
;
1975 outbuf
[0] = (nb_sectors
>> 24) & 0xff;
1976 outbuf
[1] = (nb_sectors
>> 16) & 0xff;
1977 outbuf
[2] = (nb_sectors
>> 8) & 0xff;
1978 outbuf
[3] = nb_sectors
& 0xff;
1981 outbuf
[6] = s
->qdev
.blocksize
>> 8;
1985 /* Just return "NO SENSE". */
1986 buflen
= scsi_convert_sense(NULL
, 0, outbuf
, r
->buflen
,
1987 (req
->cmd
.buf
[1] & 1) == 0);
1989 goto illegal_request
;
1992 case MECHANISM_STATUS
:
1993 buflen
= scsi_emulate_mechanism_status(s
, outbuf
);
1995 goto illegal_request
;
1998 case GET_CONFIGURATION
:
1999 buflen
= scsi_get_configuration(s
, outbuf
);
2001 goto illegal_request
;
2004 case GET_EVENT_STATUS_NOTIFICATION
:
2005 buflen
= scsi_get_event_status_notification(s
, r
, outbuf
);
2007 goto illegal_request
;
2010 case READ_DISC_INFORMATION
:
2011 buflen
= scsi_read_disc_information(s
, r
, outbuf
);
2013 goto illegal_request
;
2016 case READ_DVD_STRUCTURE
:
2017 buflen
= scsi_read_dvd_structure(s
, r
, outbuf
);
2019 goto illegal_request
;
2022 case SERVICE_ACTION_IN_16
:
2023 /* Service Action In subcommands. */
2024 if ((req
->cmd
.buf
[1] & 31) == SAI_READ_CAPACITY_16
) {
2025 trace_scsi_disk_emulate_command_SAI_16();
2026 memset(outbuf
, 0, req
->cmd
.xfer
);
2027 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2029 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
2032 if ((req
->cmd
.buf
[14] & 1) == 0 && req
->cmd
.lba
) {
2033 goto illegal_request
;
2035 nb_sectors
/= s
->qdev
.blocksize
/ 512;
2036 /* Returned value is the address of the last sector. */
2038 /* Remember the new size for read/write sanity checking. */
2039 s
->qdev
.max_lba
= nb_sectors
;
2040 outbuf
[0] = (nb_sectors
>> 56) & 0xff;
2041 outbuf
[1] = (nb_sectors
>> 48) & 0xff;
2042 outbuf
[2] = (nb_sectors
>> 40) & 0xff;
2043 outbuf
[3] = (nb_sectors
>> 32) & 0xff;
2044 outbuf
[4] = (nb_sectors
>> 24) & 0xff;
2045 outbuf
[5] = (nb_sectors
>> 16) & 0xff;
2046 outbuf
[6] = (nb_sectors
>> 8) & 0xff;
2047 outbuf
[7] = nb_sectors
& 0xff;
2050 outbuf
[10] = s
->qdev
.blocksize
>> 8;
2053 outbuf
[13] = get_physical_block_exp(&s
->qdev
.conf
);
2055 /* set TPE bit if the format supports discard */
2056 if (s
->qdev
.conf
.discard_granularity
) {
2060 /* Protection, exponent and lowest lba field left blank. */
2063 trace_scsi_disk_emulate_command_SAI_unsupported();
2064 goto illegal_request
;
2065 case SYNCHRONIZE_CACHE
:
2066 /* The request is used as the AIO opaque value, so add a ref. */
2067 scsi_req_ref(&r
->req
);
2068 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
2070 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
2073 trace_scsi_disk_emulate_command_SEEK_10(r
->req
.cmd
.lba
);
2074 if (r
->req
.cmd
.lba
> s
->qdev
.max_lba
) {
2079 trace_scsi_disk_emulate_command_MODE_SELECT(r
->req
.cmd
.xfer
);
2081 case MODE_SELECT_10
:
2082 trace_scsi_disk_emulate_command_MODE_SELECT_10(r
->req
.cmd
.xfer
);
2085 trace_scsi_disk_emulate_command_UNMAP(r
->req
.cmd
.xfer
);
2090 trace_scsi_disk_emulate_command_VERIFY((req
->cmd
.buf
[1] >> 1) & 3);
2091 if (req
->cmd
.buf
[1] & 6) {
2092 goto illegal_request
;
2097 trace_scsi_disk_emulate_command_WRITE_SAME(
2098 req
->cmd
.buf
[0] == WRITE_SAME_10
? 10 : 16, r
->req
.cmd
.xfer
);
2101 trace_scsi_disk_emulate_command_UNKNOWN(buf
[0],
2102 scsi_command_name(buf
[0]));
2103 scsi_check_condition(r
, SENSE_CODE(INVALID_OPCODE
));
2106 assert(!r
->req
.aiocb
);
2107 r
->iov
.iov_len
= MIN(r
->buflen
, req
->cmd
.xfer
);
2108 if (r
->iov
.iov_len
== 0) {
2109 scsi_req_complete(&r
->req
, GOOD
);
2111 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2112 assert(r
->iov
.iov_len
== req
->cmd
.xfer
);
2113 return -r
->iov
.iov_len
;
2115 return r
->iov
.iov_len
;
2119 if (r
->req
.status
== -1) {
2120 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2125 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2129 /* Execute a scsi command. Returns the length of the data expected by the
2130 command. This will be Positive for data transfers from the device
2131 (eg. disk reads), negative for transfers to the device (eg. disk writes),
2132 and zero if the command does not transfer any data. */
2134 static int32_t scsi_disk_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2136 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2137 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2138 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
2144 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
2145 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
2149 len
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
2155 trace_scsi_disk_dma_command_READ(r
->req
.cmd
.lba
, len
);
2156 /* Protection information is not supported. For SCSI versions 2 and
2157 * older (as determined by snooping the guest's INQUIRY commands),
2158 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2160 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2161 goto illegal_request
;
2163 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2166 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ 512);
2167 r
->sector_count
= len
* (s
->qdev
.blocksize
/ 512);
2173 case WRITE_VERIFY_10
:
2174 case WRITE_VERIFY_12
:
2175 case WRITE_VERIFY_16
:
2176 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
2177 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
2180 trace_scsi_disk_dma_command_WRITE(
2181 (command
& 0xe) == 0xe ? "And Verify " : "",
2182 r
->req
.cmd
.lba
, len
);
2187 /* We get here only for BYTCHK == 0x01 and only for scsi-block.
2188 * As far as DMA is concerned, we can treat it the same as a write;
2189 * scsi_block_do_sgio will send VERIFY commands.
2191 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2192 goto illegal_request
;
2194 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2197 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ 512);
2198 r
->sector_count
= len
* (s
->qdev
.blocksize
/ 512);
2203 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2206 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2209 r
->need_fua_emulation
= sdc
->need_fua_emulation(&r
->req
.cmd
);
2210 if (r
->sector_count
== 0) {
2211 scsi_req_complete(&r
->req
, GOOD
);
2213 assert(r
->iov
.iov_len
== 0);
2214 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2215 return -r
->sector_count
* 512;
2217 return r
->sector_count
* 512;
2221 static void scsi_disk_reset(DeviceState
*dev
)
2223 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
.qdev
, dev
);
2224 uint64_t nb_sectors
;
2226 scsi_device_purge_requests(&s
->qdev
, SENSE_CODE(RESET
));
2228 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2229 nb_sectors
/= s
->qdev
.blocksize
/ 512;
2233 s
->qdev
.max_lba
= nb_sectors
;
2234 /* reset tray statuses */
2238 s
->qdev
.scsi_version
= s
->qdev
.default_scsi_version
;
2241 static void scsi_disk_resize_cb(void *opaque
)
2243 SCSIDiskState
*s
= opaque
;
2245 /* SPC lists this sense code as available only for
2246 * direct-access devices.
2248 if (s
->qdev
.type
== TYPE_DISK
) {
2249 scsi_device_report_change(&s
->qdev
, SENSE_CODE(CAPACITY_CHANGED
));
2253 static void scsi_cd_change_media_cb(void *opaque
, bool load
, Error
**errp
)
2255 SCSIDiskState
*s
= opaque
;
2258 * When a CD gets changed, we have to report an ejected state and
2259 * then a loaded state to guests so that they detect tray
2260 * open/close and media change events. Guests that do not use
2261 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
2262 * states rely on this behavior.
2264 * media_changed governs the state machine used for unit attention
2265 * report. media_event is used by GET EVENT STATUS NOTIFICATION.
2267 s
->media_changed
= load
;
2268 s
->tray_open
= !load
;
2269 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM
));
2270 s
->media_event
= true;
2271 s
->eject_request
= false;
2274 static void scsi_cd_eject_request_cb(void *opaque
, bool force
)
2276 SCSIDiskState
*s
= opaque
;
2278 s
->eject_request
= true;
2280 s
->tray_locked
= false;
2284 static bool scsi_cd_is_tray_open(void *opaque
)
2286 return ((SCSIDiskState
*)opaque
)->tray_open
;
2289 static bool scsi_cd_is_medium_locked(void *opaque
)
2291 return ((SCSIDiskState
*)opaque
)->tray_locked
;
2294 static const BlockDevOps scsi_disk_removable_block_ops
= {
2295 .change_media_cb
= scsi_cd_change_media_cb
,
2296 .eject_request_cb
= scsi_cd_eject_request_cb
,
2297 .is_tray_open
= scsi_cd_is_tray_open
,
2298 .is_medium_locked
= scsi_cd_is_medium_locked
,
2300 .resize_cb
= scsi_disk_resize_cb
,
2303 static const BlockDevOps scsi_disk_block_ops
= {
2304 .resize_cb
= scsi_disk_resize_cb
,
2307 static void scsi_disk_unit_attention_reported(SCSIDevice
*dev
)
2309 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2310 if (s
->media_changed
) {
2311 s
->media_changed
= false;
2312 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(MEDIUM_CHANGED
));
2316 static void scsi_realize(SCSIDevice
*dev
, Error
**errp
)
2318 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2320 if (!s
->qdev
.conf
.blk
) {
2321 error_setg(errp
, "drive property not set");
2325 if (!(s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2326 !blk_is_inserted(s
->qdev
.conf
.blk
)) {
2327 error_setg(errp
, "Device needs media, but drive is empty");
2331 blkconf_blocksizes(&s
->qdev
.conf
);
2333 if (s
->qdev
.conf
.logical_block_size
>
2334 s
->qdev
.conf
.physical_block_size
) {
2336 "logical_block_size > physical_block_size not supported");
2340 if (blk_get_aio_context(s
->qdev
.conf
.blk
) != qemu_get_aio_context() &&
2341 !s
->qdev
.hba_supports_iothread
)
2343 error_setg(errp
, "HBA does not support iothreads");
2347 if (dev
->type
== TYPE_DISK
) {
2348 if (!blkconf_geometry(&dev
->conf
, NULL
, 65535, 255, 255, errp
)) {
2352 if (!blkconf_apply_backend_options(&dev
->conf
,
2353 blk_is_read_only(s
->qdev
.conf
.blk
),
2354 dev
->type
== TYPE_DISK
, errp
)) {
2358 if (s
->qdev
.conf
.discard_granularity
== -1) {
2359 s
->qdev
.conf
.discard_granularity
=
2360 MAX(s
->qdev
.conf
.logical_block_size
, DEFAULT_DISCARD_GRANULARITY
);
2364 s
->version
= g_strdup(qemu_hw_version());
2367 s
->vendor
= g_strdup("QEMU");
2369 if (!s
->device_id
) {
2371 s
->device_id
= g_strdup_printf("%.20s", s
->serial
);
2373 const char *str
= blk_name(s
->qdev
.conf
.blk
);
2375 s
->device_id
= g_strdup(str
);
2380 if (blk_is_sg(s
->qdev
.conf
.blk
)) {
2381 error_setg(errp
, "unwanted /dev/sg*");
2385 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2386 !(s
->features
& (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
))) {
2387 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_removable_block_ops
, s
);
2389 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_block_ops
, s
);
2391 blk_set_guest_block_size(s
->qdev
.conf
.blk
, s
->qdev
.blocksize
);
2393 blk_iostatus_enable(s
->qdev
.conf
.blk
);
2396 static void scsi_hd_realize(SCSIDevice
*dev
, Error
**errp
)
2398 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2399 AioContext
*ctx
= NULL
;
2400 /* can happen for devices without drive. The error message for missing
2401 * backend will be issued in scsi_realize
2403 if (s
->qdev
.conf
.blk
) {
2404 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2405 aio_context_acquire(ctx
);
2406 blkconf_blocksizes(&s
->qdev
.conf
);
2408 s
->qdev
.blocksize
= s
->qdev
.conf
.logical_block_size
;
2409 s
->qdev
.type
= TYPE_DISK
;
2411 s
->product
= g_strdup("QEMU HARDDISK");
2413 scsi_realize(&s
->qdev
, errp
);
2415 aio_context_release(ctx
);
2419 static void scsi_cd_realize(SCSIDevice
*dev
, Error
**errp
)
2421 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2425 if (!dev
->conf
.blk
) {
2426 /* Anonymous BlockBackend for an empty drive. As we put it into
2427 * dev->conf, qdev takes care of detaching on unplug. */
2428 dev
->conf
.blk
= blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL
);
2429 ret
= blk_attach_dev(dev
->conf
.blk
, &dev
->qdev
);
2433 ctx
= blk_get_aio_context(dev
->conf
.blk
);
2434 aio_context_acquire(ctx
);
2435 s
->qdev
.blocksize
= 2048;
2436 s
->qdev
.type
= TYPE_ROM
;
2437 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2439 s
->product
= g_strdup("QEMU CD-ROM");
2441 scsi_realize(&s
->qdev
, errp
);
2442 aio_context_release(ctx
);
2445 static void scsi_disk_realize(SCSIDevice
*dev
, Error
**errp
)
2448 Error
*local_err
= NULL
;
2450 if (!dev
->conf
.blk
) {
2451 scsi_realize(dev
, &local_err
);
2453 error_propagate(errp
, local_err
);
2457 dinfo
= blk_legacy_dinfo(dev
->conf
.blk
);
2458 if (dinfo
&& dinfo
->media_cd
) {
2459 scsi_cd_realize(dev
, errp
);
2461 scsi_hd_realize(dev
, errp
);
2465 static const SCSIReqOps scsi_disk_emulate_reqops
= {
2466 .size
= sizeof(SCSIDiskReq
),
2467 .free_req
= scsi_free_request
,
2468 .send_command
= scsi_disk_emulate_command
,
2469 .read_data
= scsi_disk_emulate_read_data
,
2470 .write_data
= scsi_disk_emulate_write_data
,
2471 .get_buf
= scsi_get_buf
,
2474 static const SCSIReqOps scsi_disk_dma_reqops
= {
2475 .size
= sizeof(SCSIDiskReq
),
2476 .free_req
= scsi_free_request
,
2477 .send_command
= scsi_disk_dma_command
,
2478 .read_data
= scsi_read_data
,
2479 .write_data
= scsi_write_data
,
2480 .get_buf
= scsi_get_buf
,
2481 .load_request
= scsi_disk_load_request
,
2482 .save_request
= scsi_disk_save_request
,
2485 static const SCSIReqOps
*const scsi_disk_reqops_dispatch
[256] = {
2486 [TEST_UNIT_READY
] = &scsi_disk_emulate_reqops
,
2487 [INQUIRY
] = &scsi_disk_emulate_reqops
,
2488 [MODE_SENSE
] = &scsi_disk_emulate_reqops
,
2489 [MODE_SENSE_10
] = &scsi_disk_emulate_reqops
,
2490 [START_STOP
] = &scsi_disk_emulate_reqops
,
2491 [ALLOW_MEDIUM_REMOVAL
] = &scsi_disk_emulate_reqops
,
2492 [READ_CAPACITY_10
] = &scsi_disk_emulate_reqops
,
2493 [READ_TOC
] = &scsi_disk_emulate_reqops
,
2494 [READ_DVD_STRUCTURE
] = &scsi_disk_emulate_reqops
,
2495 [READ_DISC_INFORMATION
] = &scsi_disk_emulate_reqops
,
2496 [GET_CONFIGURATION
] = &scsi_disk_emulate_reqops
,
2497 [GET_EVENT_STATUS_NOTIFICATION
] = &scsi_disk_emulate_reqops
,
2498 [MECHANISM_STATUS
] = &scsi_disk_emulate_reqops
,
2499 [SERVICE_ACTION_IN_16
] = &scsi_disk_emulate_reqops
,
2500 [REQUEST_SENSE
] = &scsi_disk_emulate_reqops
,
2501 [SYNCHRONIZE_CACHE
] = &scsi_disk_emulate_reqops
,
2502 [SEEK_10
] = &scsi_disk_emulate_reqops
,
2503 [MODE_SELECT
] = &scsi_disk_emulate_reqops
,
2504 [MODE_SELECT_10
] = &scsi_disk_emulate_reqops
,
2505 [UNMAP
] = &scsi_disk_emulate_reqops
,
2506 [WRITE_SAME_10
] = &scsi_disk_emulate_reqops
,
2507 [WRITE_SAME_16
] = &scsi_disk_emulate_reqops
,
2508 [VERIFY_10
] = &scsi_disk_emulate_reqops
,
2509 [VERIFY_12
] = &scsi_disk_emulate_reqops
,
2510 [VERIFY_16
] = &scsi_disk_emulate_reqops
,
2512 [READ_6
] = &scsi_disk_dma_reqops
,
2513 [READ_10
] = &scsi_disk_dma_reqops
,
2514 [READ_12
] = &scsi_disk_dma_reqops
,
2515 [READ_16
] = &scsi_disk_dma_reqops
,
2516 [WRITE_6
] = &scsi_disk_dma_reqops
,
2517 [WRITE_10
] = &scsi_disk_dma_reqops
,
2518 [WRITE_12
] = &scsi_disk_dma_reqops
,
2519 [WRITE_16
] = &scsi_disk_dma_reqops
,
2520 [WRITE_VERIFY_10
] = &scsi_disk_dma_reqops
,
2521 [WRITE_VERIFY_12
] = &scsi_disk_dma_reqops
,
2522 [WRITE_VERIFY_16
] = &scsi_disk_dma_reqops
,
2525 static void scsi_disk_new_request_dump(uint32_t lun
, uint32_t tag
, uint8_t *buf
)
2528 int len
= scsi_cdb_length(buf
);
2529 char *line_buffer
, *p
;
2531 line_buffer
= g_malloc(len
* 5 + 1);
2533 for (i
= 0, p
= line_buffer
; i
< len
; i
++) {
2534 p
+= sprintf(p
, " 0x%02x", buf
[i
]);
2536 trace_scsi_disk_new_request(lun
, tag
, line_buffer
);
2538 g_free(line_buffer
);
2541 static SCSIRequest
*scsi_new_request(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
2542 uint8_t *buf
, void *hba_private
)
2544 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2546 const SCSIReqOps
*ops
;
2550 ops
= scsi_disk_reqops_dispatch
[command
];
2552 ops
= &scsi_disk_emulate_reqops
;
2554 req
= scsi_req_alloc(ops
, &s
->qdev
, tag
, lun
, hba_private
);
2556 if (trace_event_get_state_backends(TRACE_SCSI_DISK_NEW_REQUEST
)) {
2557 scsi_disk_new_request_dump(lun
, tag
, buf
);
2564 static int get_device_type(SCSIDiskState
*s
)
2570 memset(cmd
, 0, sizeof(cmd
));
2571 memset(buf
, 0, sizeof(buf
));
2573 cmd
[4] = sizeof(buf
);
2575 ret
= scsi_SG_IO_FROM_DEV(s
->qdev
.conf
.blk
, cmd
, sizeof(cmd
),
2580 s
->qdev
.type
= buf
[0];
2581 if (buf
[1] & 0x80) {
2582 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2587 static void scsi_block_realize(SCSIDevice
*dev
, Error
**errp
)
2589 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2594 if (!s
->qdev
.conf
.blk
) {
2595 error_setg(errp
, "drive property not set");
2599 if (s
->rotation_rate
) {
2600 error_report_once("rotation_rate is specified for scsi-block but is "
2601 "not implemented. This option is deprecated and will "
2602 "be removed in a future version");
2605 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2606 aio_context_acquire(ctx
);
2608 /* check we are using a driver managing SG_IO (version 3 and after) */
2609 rc
= blk_ioctl(s
->qdev
.conf
.blk
, SG_GET_VERSION_NUM
, &sg_version
);
2611 error_setg_errno(errp
, -rc
, "cannot get SG_IO version number");
2613 error_append_hint(errp
, "Is this a SCSI device?\n");
2617 if (sg_version
< 30000) {
2618 error_setg(errp
, "scsi generic interface too old");
2622 /* get device type from INQUIRY data */
2623 rc
= get_device_type(s
);
2625 error_setg(errp
, "INQUIRY failed");
2629 /* Make a guess for the block size, we'll fix it when the guest sends.
2630 * READ CAPACITY. If they don't, they likely would assume these sizes
2631 * anyway. (TODO: check in /sys).
2633 if (s
->qdev
.type
== TYPE_ROM
|| s
->qdev
.type
== TYPE_WORM
) {
2634 s
->qdev
.blocksize
= 2048;
2636 s
->qdev
.blocksize
= 512;
2639 /* Makes the scsi-block device not removable by using HMP and QMP eject
2642 s
->features
|= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
);
2644 scsi_realize(&s
->qdev
, errp
);
2645 scsi_generic_read_device_inquiry(&s
->qdev
);
2648 aio_context_release(ctx
);
2651 typedef struct SCSIBlockReq
{
2653 sg_io_hdr_t io_header
;
2655 /* Selected bytes of the original CDB, copied into our own CDB. */
2656 uint8_t cmd
, cdb1
, group_number
;
2658 /* CDB passed to SG_IO. */
2662 static BlockAIOCB
*scsi_block_do_sgio(SCSIBlockReq
*req
,
2663 int64_t offset
, QEMUIOVector
*iov
,
2665 BlockCompletionFunc
*cb
, void *opaque
)
2667 sg_io_hdr_t
*io_header
= &req
->io_header
;
2668 SCSIDiskReq
*r
= &req
->req
;
2669 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2670 int nb_logical_blocks
;
2674 /* This is not supported yet. It can only happen if the guest does
2675 * reads and writes that are not aligned to one logical sectors
2676 * _and_ cover multiple MemoryRegions.
2678 assert(offset
% s
->qdev
.blocksize
== 0);
2679 assert(iov
->size
% s
->qdev
.blocksize
== 0);
2681 io_header
->interface_id
= 'S';
2683 /* The data transfer comes from the QEMUIOVector. */
2684 io_header
->dxfer_direction
= direction
;
2685 io_header
->dxfer_len
= iov
->size
;
2686 io_header
->dxferp
= (void *)iov
->iov
;
2687 io_header
->iovec_count
= iov
->niov
;
2688 assert(io_header
->iovec_count
== iov
->niov
); /* no overflow! */
2690 /* Build a new CDB with the LBA and length patched in, in case
2691 * DMA helpers split the transfer in multiple segments. Do not
2692 * build a CDB smaller than what the guest wanted, and only build
2693 * a larger one if strictly necessary.
2695 io_header
->cmdp
= req
->cdb
;
2696 lba
= offset
/ s
->qdev
.blocksize
;
2697 nb_logical_blocks
= io_header
->dxfer_len
/ s
->qdev
.blocksize
;
2699 if ((req
->cmd
>> 5) == 0 && lba
<= 0x1ffff) {
2701 stl_be_p(&req
->cdb
[0], lba
| (req
->cmd
<< 24));
2702 req
->cdb
[4] = nb_logical_blocks
;
2704 io_header
->cmd_len
= 6;
2705 } else if ((req
->cmd
>> 5) <= 1 && lba
<= 0xffffffffULL
) {
2707 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x20;
2708 req
->cdb
[1] = req
->cdb1
;
2709 stl_be_p(&req
->cdb
[2], lba
);
2710 req
->cdb
[6] = req
->group_number
;
2711 stw_be_p(&req
->cdb
[7], nb_logical_blocks
);
2713 io_header
->cmd_len
= 10;
2714 } else if ((req
->cmd
>> 5) != 4 && lba
<= 0xffffffffULL
) {
2716 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0xA0;
2717 req
->cdb
[1] = req
->cdb1
;
2718 stl_be_p(&req
->cdb
[2], lba
);
2719 stl_be_p(&req
->cdb
[6], nb_logical_blocks
);
2720 req
->cdb
[10] = req
->group_number
;
2722 io_header
->cmd_len
= 12;
2725 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x80;
2726 req
->cdb
[1] = req
->cdb1
;
2727 stq_be_p(&req
->cdb
[2], lba
);
2728 stl_be_p(&req
->cdb
[10], nb_logical_blocks
);
2729 req
->cdb
[14] = req
->group_number
;
2731 io_header
->cmd_len
= 16;
2734 /* The rest is as in scsi-generic.c. */
2735 io_header
->mx_sb_len
= sizeof(r
->req
.sense
);
2736 io_header
->sbp
= r
->req
.sense
;
2737 io_header
->timeout
= UINT_MAX
;
2738 io_header
->usr_ptr
= r
;
2739 io_header
->flags
|= SG_FLAG_DIRECT_IO
;
2741 aiocb
= blk_aio_ioctl(s
->qdev
.conf
.blk
, SG_IO
, io_header
, cb
, opaque
);
2742 assert(aiocb
!= NULL
);
2746 static bool scsi_block_no_fua(SCSICommand
*cmd
)
2751 static BlockAIOCB
*scsi_block_dma_readv(int64_t offset
,
2753 BlockCompletionFunc
*cb
, void *cb_opaque
,
2756 SCSIBlockReq
*r
= opaque
;
2757 return scsi_block_do_sgio(r
, offset
, iov
,
2758 SG_DXFER_FROM_DEV
, cb
, cb_opaque
);
2761 static BlockAIOCB
*scsi_block_dma_writev(int64_t offset
,
2763 BlockCompletionFunc
*cb
, void *cb_opaque
,
2766 SCSIBlockReq
*r
= opaque
;
2767 return scsi_block_do_sgio(r
, offset
, iov
,
2768 SG_DXFER_TO_DEV
, cb
, cb_opaque
);
2771 static bool scsi_block_is_passthrough(SCSIDiskState
*s
, uint8_t *buf
)
2777 /* Check if BYTCHK == 0x01 (data-out buffer contains data
2778 * for the number of logical blocks specified in the length
2779 * field). For other modes, do not use scatter/gather operation.
2781 if ((buf
[1] & 6) == 2) {
2794 case WRITE_VERIFY_10
:
2795 case WRITE_VERIFY_12
:
2796 case WRITE_VERIFY_16
:
2797 /* MMC writing cannot be done via DMA helpers, because it sometimes
2798 * involves writing beyond the maximum LBA or to negative LBA (lead-in).
2799 * We might use scsi_block_dma_reqops as long as no writing commands are
2800 * seen, but performance usually isn't paramount on optical media. So,
2801 * just make scsi-block operate the same as scsi-generic for them.
2803 if (s
->qdev
.type
!= TYPE_ROM
) {
2816 static int32_t scsi_block_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2818 SCSIBlockReq
*r
= (SCSIBlockReq
*)req
;
2819 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2821 r
->cmd
= req
->cmd
.buf
[0];
2822 switch (r
->cmd
>> 5) {
2825 r
->cdb1
= r
->group_number
= 0;
2829 r
->cdb1
= req
->cmd
.buf
[1];
2830 r
->group_number
= req
->cmd
.buf
[6];
2834 r
->cdb1
= req
->cmd
.buf
[1];
2835 r
->group_number
= req
->cmd
.buf
[10];
2839 r
->cdb1
= req
->cmd
.buf
[1];
2840 r
->group_number
= req
->cmd
.buf
[14];
2846 /* Protection information is not supported. For SCSI versions 2 and
2847 * older (as determined by snooping the guest's INQUIRY commands),
2848 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2850 if (s
->qdev
.scsi_version
> 2 && (req
->cmd
.buf
[1] & 0xe0)) {
2851 scsi_check_condition(&r
->req
, SENSE_CODE(INVALID_FIELD
));
2855 r
->req
.status
= &r
->io_header
.status
;
2856 return scsi_disk_dma_command(req
, buf
);
2859 static const SCSIReqOps scsi_block_dma_reqops
= {
2860 .size
= sizeof(SCSIBlockReq
),
2861 .free_req
= scsi_free_request
,
2862 .send_command
= scsi_block_dma_command
,
2863 .read_data
= scsi_read_data
,
2864 .write_data
= scsi_write_data
,
2865 .get_buf
= scsi_get_buf
,
2866 .load_request
= scsi_disk_load_request
,
2867 .save_request
= scsi_disk_save_request
,
2870 static SCSIRequest
*scsi_block_new_request(SCSIDevice
*d
, uint32_t tag
,
2871 uint32_t lun
, uint8_t *buf
,
2874 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2876 if (scsi_block_is_passthrough(s
, buf
)) {
2877 return scsi_req_alloc(&scsi_generic_req_ops
, &s
->qdev
, tag
, lun
,
2880 return scsi_req_alloc(&scsi_block_dma_reqops
, &s
->qdev
, tag
, lun
,
2885 static int scsi_block_parse_cdb(SCSIDevice
*d
, SCSICommand
*cmd
,
2886 uint8_t *buf
, void *hba_private
)
2888 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2890 if (scsi_block_is_passthrough(s
, buf
)) {
2891 return scsi_bus_parse_cdb(&s
->qdev
, cmd
, buf
, hba_private
);
2893 return scsi_req_parse_cdb(&s
->qdev
, cmd
, buf
);
2900 BlockAIOCB
*scsi_dma_readv(int64_t offset
, QEMUIOVector
*iov
,
2901 BlockCompletionFunc
*cb
, void *cb_opaque
,
2904 SCSIDiskReq
*r
= opaque
;
2905 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2906 return blk_aio_preadv(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2910 BlockAIOCB
*scsi_dma_writev(int64_t offset
, QEMUIOVector
*iov
,
2911 BlockCompletionFunc
*cb
, void *cb_opaque
,
2914 SCSIDiskReq
*r
= opaque
;
2915 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2916 return blk_aio_pwritev(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2919 static void scsi_disk_base_class_initfn(ObjectClass
*klass
, void *data
)
2921 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2922 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
2924 dc
->fw_name
= "disk";
2925 dc
->reset
= scsi_disk_reset
;
2926 sdc
->dma_readv
= scsi_dma_readv
;
2927 sdc
->dma_writev
= scsi_dma_writev
;
2928 sdc
->need_fua_emulation
= scsi_is_cmd_fua
;
2931 static const TypeInfo scsi_disk_base_info
= {
2932 .name
= TYPE_SCSI_DISK_BASE
,
2933 .parent
= TYPE_SCSI_DEVICE
,
2934 .class_init
= scsi_disk_base_class_initfn
,
2935 .instance_size
= sizeof(SCSIDiskState
),
2936 .class_size
= sizeof(SCSIDiskClass
),
2940 #define DEFINE_SCSI_DISK_PROPERTIES() \
2941 DEFINE_PROP_DRIVE_IOTHREAD("drive", SCSIDiskState, qdev.conf.blk), \
2942 DEFINE_BLOCK_PROPERTIES_BASE(SCSIDiskState, qdev.conf), \
2943 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
2944 DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
2945 DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
2946 DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
2947 DEFINE_PROP_STRING("product", SCSIDiskState, product), \
2948 DEFINE_PROP_STRING("device_id", SCSIDiskState, device_id)
2951 static Property scsi_hd_properties
[] = {
2952 DEFINE_SCSI_DISK_PROPERTIES(),
2953 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
2954 SCSI_DISK_F_REMOVABLE
, false),
2955 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
2956 SCSI_DISK_F_DPOFUA
, false),
2957 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
2958 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
2959 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
2960 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
2961 DEFAULT_MAX_UNMAP_SIZE
),
2962 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
2963 DEFAULT_MAX_IO_SIZE
),
2964 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
2965 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
2967 DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState
, qdev
.conf
),
2968 DEFINE_PROP_END_OF_LIST(),
2971 static const VMStateDescription vmstate_scsi_disk_state
= {
2972 .name
= "scsi-disk",
2974 .minimum_version_id
= 1,
2975 .fields
= (VMStateField
[]) {
2976 VMSTATE_SCSI_DEVICE(qdev
, SCSIDiskState
),
2977 VMSTATE_BOOL(media_changed
, SCSIDiskState
),
2978 VMSTATE_BOOL(media_event
, SCSIDiskState
),
2979 VMSTATE_BOOL(eject_request
, SCSIDiskState
),
2980 VMSTATE_BOOL(tray_open
, SCSIDiskState
),
2981 VMSTATE_BOOL(tray_locked
, SCSIDiskState
),
2982 VMSTATE_END_OF_LIST()
2986 static void scsi_hd_class_initfn(ObjectClass
*klass
, void *data
)
2988 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2989 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
2991 sc
->realize
= scsi_hd_realize
;
2992 sc
->alloc_req
= scsi_new_request
;
2993 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
2994 dc
->desc
= "virtual SCSI disk";
2995 dc
->props
= scsi_hd_properties
;
2996 dc
->vmsd
= &vmstate_scsi_disk_state
;
2999 static const TypeInfo scsi_hd_info
= {
3001 .parent
= TYPE_SCSI_DISK_BASE
,
3002 .class_init
= scsi_hd_class_initfn
,
3005 static Property scsi_cd_properties
[] = {
3006 DEFINE_SCSI_DISK_PROPERTIES(),
3007 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3008 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3009 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3010 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3011 DEFAULT_MAX_IO_SIZE
),
3012 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3014 DEFINE_PROP_END_OF_LIST(),
3017 static void scsi_cd_class_initfn(ObjectClass
*klass
, void *data
)
3019 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3020 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3022 sc
->realize
= scsi_cd_realize
;
3023 sc
->alloc_req
= scsi_new_request
;
3024 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3025 dc
->desc
= "virtual SCSI CD-ROM";
3026 dc
->props
= scsi_cd_properties
;
3027 dc
->vmsd
= &vmstate_scsi_disk_state
;
3030 static const TypeInfo scsi_cd_info
= {
3032 .parent
= TYPE_SCSI_DISK_BASE
,
3033 .class_init
= scsi_cd_class_initfn
,
3037 static Property scsi_block_properties
[] = {
3038 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState
, qdev
.conf
), \
3039 DEFINE_PROP_DRIVE("drive", SCSIDiskState
, qdev
.conf
.blk
),
3040 DEFINE_PROP_BOOL("share-rw", SCSIDiskState
, qdev
.conf
.share_rw
, false),
3041 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
3042 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3043 DEFAULT_MAX_UNMAP_SIZE
),
3044 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3045 DEFAULT_MAX_IO_SIZE
),
3046 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3048 DEFINE_PROP_END_OF_LIST(),
3051 static void scsi_block_class_initfn(ObjectClass
*klass
, void *data
)
3053 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3054 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3055 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
3057 sc
->realize
= scsi_block_realize
;
3058 sc
->alloc_req
= scsi_block_new_request
;
3059 sc
->parse_cdb
= scsi_block_parse_cdb
;
3060 sdc
->dma_readv
= scsi_block_dma_readv
;
3061 sdc
->dma_writev
= scsi_block_dma_writev
;
3062 sdc
->need_fua_emulation
= scsi_block_no_fua
;
3063 dc
->desc
= "SCSI block device passthrough";
3064 dc
->props
= scsi_block_properties
;
3065 dc
->vmsd
= &vmstate_scsi_disk_state
;
3068 static const TypeInfo scsi_block_info
= {
3069 .name
= "scsi-block",
3070 .parent
= TYPE_SCSI_DISK_BASE
,
3071 .class_init
= scsi_block_class_initfn
,
3075 static Property scsi_disk_properties
[] = {
3076 DEFINE_SCSI_DISK_PROPERTIES(),
3077 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
3078 SCSI_DISK_F_REMOVABLE
, false),
3079 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
3080 SCSI_DISK_F_DPOFUA
, false),
3081 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3082 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3083 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3084 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3085 DEFAULT_MAX_UNMAP_SIZE
),
3086 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3087 DEFAULT_MAX_IO_SIZE
),
3088 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3090 DEFINE_PROP_END_OF_LIST(),
3093 static void scsi_disk_class_initfn(ObjectClass
*klass
, void *data
)
3095 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3096 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3098 sc
->realize
= scsi_disk_realize
;
3099 sc
->alloc_req
= scsi_new_request
;
3100 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3101 dc
->fw_name
= "disk";
3102 dc
->desc
= "virtual SCSI disk or CD-ROM (legacy)";
3103 dc
->reset
= scsi_disk_reset
;
3104 dc
->props
= scsi_disk_properties
;
3105 dc
->vmsd
= &vmstate_scsi_disk_state
;
3108 static const TypeInfo scsi_disk_info
= {
3109 .name
= "scsi-disk",
3110 .parent
= TYPE_SCSI_DISK_BASE
,
3111 .class_init
= scsi_disk_class_initfn
,
3114 static void scsi_disk_register_types(void)
3116 type_register_static(&scsi_disk_base_info
);
3117 type_register_static(&scsi_hd_info
);
3118 type_register_static(&scsi_cd_info
);
3120 type_register_static(&scsi_block_info
);
3122 type_register_static(&scsi_disk_info
);
3125 type_init(scsi_disk_register_types
)