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 "hw/qdev-properties-system.h"
38 #include "sysemu/dma.h"
39 #include "sysemu/sysemu.h"
40 #include "qemu/cutils.h"
42 #include "qom/object.h"
48 #define SCSI_WRITE_SAME_MAX (512 * KiB)
49 #define SCSI_DMA_BUF_SIZE (128 * KiB)
50 #define SCSI_MAX_INQUIRY_LEN 256
51 #define SCSI_MAX_MODE_LEN 256
53 #define DEFAULT_DISCARD_GRANULARITY (4 * KiB)
54 #define DEFAULT_MAX_UNMAP_SIZE (1 * GiB)
55 #define DEFAULT_MAX_IO_SIZE INT_MAX /* 2 GB - 1 block */
57 #define TYPE_SCSI_DISK_BASE "scsi-disk-base"
59 OBJECT_DECLARE_TYPE(SCSIDiskState
, SCSIDiskClass
, SCSI_DISK_BASE
)
61 struct SCSIDiskClass
{
62 SCSIDeviceClass parent_class
;
64 DMAIOFunc
*dma_writev
;
65 bool (*need_fua_emulation
)(SCSICommand
*cmd
);
66 void (*update_sense
)(SCSIRequest
*r
);
69 typedef struct SCSIDiskReq
{
71 /* Both sector and sector_count are in terms of BDRV_SECTOR_SIZE bytes. */
73 uint32_t sector_count
;
76 bool need_fua_emulation
;
80 unsigned char *status
;
83 #define SCSI_DISK_F_REMOVABLE 0
84 #define SCSI_DISK_F_DPOFUA 1
85 #define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
87 struct SCSIDiskState
{
94 uint64_t max_unmap_size
;
105 * 0x0000 - rotation rate not reported
106 * 0x0001 - non-rotating medium (SSD)
107 * 0x0002-0x0400 - reserved
108 * 0x0401-0xffe - rotations per minute
111 uint16_t rotation_rate
;
114 static void scsi_free_request(SCSIRequest
*req
)
116 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
118 qemu_vfree(r
->iov
.iov_base
);
121 /* Helper function for command completion with sense. */
122 static void scsi_check_condition(SCSIDiskReq
*r
, SCSISense sense
)
124 trace_scsi_disk_check_condition(r
->req
.tag
, sense
.key
, sense
.asc
,
126 scsi_req_build_sense(&r
->req
, sense
);
127 scsi_req_complete(&r
->req
, CHECK_CONDITION
);
130 static void scsi_init_iovec(SCSIDiskReq
*r
, size_t size
)
132 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
134 if (!r
->iov
.iov_base
) {
136 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
138 r
->iov
.iov_len
= MIN(r
->sector_count
* BDRV_SECTOR_SIZE
, r
->buflen
);
139 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
142 static void scsi_disk_save_request(QEMUFile
*f
, SCSIRequest
*req
)
144 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
146 qemu_put_be64s(f
, &r
->sector
);
147 qemu_put_be32s(f
, &r
->sector_count
);
148 qemu_put_be32s(f
, &r
->buflen
);
150 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
151 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
152 } else if (!req
->retry
) {
153 uint32_t len
= r
->iov
.iov_len
;
154 qemu_put_be32s(f
, &len
);
155 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
160 static void scsi_disk_load_request(QEMUFile
*f
, SCSIRequest
*req
)
162 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
164 qemu_get_be64s(f
, &r
->sector
);
165 qemu_get_be32s(f
, &r
->sector_count
);
166 qemu_get_be32s(f
, &r
->buflen
);
168 scsi_init_iovec(r
, r
->buflen
);
169 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
170 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
171 } else if (!r
->req
.retry
) {
173 qemu_get_be32s(f
, &len
);
174 r
->iov
.iov_len
= len
;
175 assert(r
->iov
.iov_len
<= r
->buflen
);
176 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
180 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
184 * scsi_handle_rw_error has two return values. False means that the error
185 * must be ignored, true means that the error has been processed and the
186 * caller should not do anything else for this request. Note that
187 * scsi_handle_rw_error always manages its reference counts, independent
188 * of the return value.
190 static bool scsi_handle_rw_error(SCSIDiskReq
*r
, int ret
, bool acct_failed
)
192 bool is_read
= (r
->req
.cmd
.mode
== SCSI_XFER_FROM_DEV
);
193 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
194 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
195 SCSISense sense
= SENSE_CODE(NO_SENSE
);
197 bool req_has_sense
= false;
198 BlockErrorAction action
;
202 status
= scsi_sense_from_errno(-ret
, &sense
);
205 /* A passthrough command has completed with nonzero status. */
207 if (status
== CHECK_CONDITION
) {
208 req_has_sense
= true;
209 error
= scsi_sense_buf_to_errno(r
->req
.sense
, sizeof(r
->req
.sense
));
216 * Check whether the error has to be handled by the guest or should
217 * rather follow the rerror=/werror= settings. Guest-handled errors
218 * are usually retried immediately, so do not post them to QMP and
219 * do not account them as failed I/O.
222 scsi_sense_buf_is_guest_recoverable(r
->req
.sense
, sizeof(r
->req
.sense
))) {
223 action
= BLOCK_ERROR_ACTION_REPORT
;
226 action
= blk_get_error_action(s
->qdev
.conf
.blk
, is_read
, error
);
227 blk_error_action(s
->qdev
.conf
.blk
, action
, is_read
, error
);
231 case BLOCK_ERROR_ACTION_REPORT
:
233 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
236 sdc
->update_sense(&r
->req
);
237 } else if (status
== CHECK_CONDITION
) {
238 scsi_req_build_sense(&r
->req
, sense
);
240 scsi_req_complete(&r
->req
, status
);
243 case BLOCK_ERROR_ACTION_IGNORE
:
246 case BLOCK_ERROR_ACTION_STOP
:
247 scsi_req_retry(&r
->req
);
251 g_assert_not_reached();
255 static bool scsi_disk_req_check_error(SCSIDiskReq
*r
, int ret
, bool acct_failed
)
257 if (r
->req
.io_canceled
) {
258 scsi_req_cancel_complete(&r
->req
);
263 return scsi_handle_rw_error(r
, ret
, acct_failed
);
264 } else if (r
->status
&& *r
->status
) {
265 return scsi_handle_rw_error(r
, *r
->status
, acct_failed
);
271 static void scsi_aio_complete(void *opaque
, int ret
)
273 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
274 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
276 assert(r
->req
.aiocb
!= NULL
);
278 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
279 if (scsi_disk_req_check_error(r
, ret
, true)) {
283 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
284 scsi_req_complete(&r
->req
, GOOD
);
287 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
288 scsi_req_unref(&r
->req
);
291 static bool scsi_is_cmd_fua(SCSICommand
*cmd
)
293 switch (cmd
->buf
[0]) {
300 return (cmd
->buf
[1] & 8) != 0;
305 case WRITE_VERIFY_10
:
306 case WRITE_VERIFY_12
:
307 case WRITE_VERIFY_16
:
317 static void scsi_write_do_fua(SCSIDiskReq
*r
)
319 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
321 assert(r
->req
.aiocb
== NULL
);
322 assert(!r
->req
.io_canceled
);
324 if (r
->need_fua_emulation
) {
325 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
327 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
331 scsi_req_complete(&r
->req
, GOOD
);
332 scsi_req_unref(&r
->req
);
335 static void scsi_dma_complete_noio(SCSIDiskReq
*r
, int ret
)
337 assert(r
->req
.aiocb
== NULL
);
338 if (scsi_disk_req_check_error(r
, ret
, false)) {
342 r
->sector
+= r
->sector_count
;
344 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
345 scsi_write_do_fua(r
);
348 scsi_req_complete(&r
->req
, GOOD
);
352 scsi_req_unref(&r
->req
);
355 static void scsi_dma_complete(void *opaque
, int ret
)
357 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
358 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
360 assert(r
->req
.aiocb
!= NULL
);
363 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
365 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
367 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
369 scsi_dma_complete_noio(r
, ret
);
370 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
373 static void scsi_read_complete_noio(SCSIDiskReq
*r
, int ret
)
377 assert(r
->req
.aiocb
== NULL
);
378 if (scsi_disk_req_check_error(r
, ret
, false)) {
382 n
= r
->qiov
.size
/ BDRV_SECTOR_SIZE
;
384 r
->sector_count
-= n
;
385 scsi_req_data(&r
->req
, r
->qiov
.size
);
388 scsi_req_unref(&r
->req
);
391 static void scsi_read_complete(void *opaque
, int ret
)
393 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
394 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
396 assert(r
->req
.aiocb
!= NULL
);
399 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
401 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
403 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
404 trace_scsi_disk_read_complete(r
->req
.tag
, r
->qiov
.size
);
406 scsi_read_complete_noio(r
, ret
);
407 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
410 /* Actually issue a read to the block device. */
411 static void scsi_do_read(SCSIDiskReq
*r
, int ret
)
413 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
414 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
416 assert (r
->req
.aiocb
== NULL
);
417 if (scsi_disk_req_check_error(r
, ret
, false)) {
421 /* The request is used as the AIO opaque value, so add a ref. */
422 scsi_req_ref(&r
->req
);
425 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_READ
);
426 r
->req
.resid
-= r
->req
.sg
->size
;
427 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
428 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
430 sdc
->dma_readv
, r
, scsi_dma_complete
, r
,
431 DMA_DIRECTION_FROM_DEVICE
);
433 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
434 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
435 r
->qiov
.size
, BLOCK_ACCT_READ
);
436 r
->req
.aiocb
= sdc
->dma_readv(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
437 scsi_read_complete
, r
, r
);
441 scsi_req_unref(&r
->req
);
444 static void scsi_do_read_cb(void *opaque
, int ret
)
446 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
447 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
449 assert (r
->req
.aiocb
!= NULL
);
452 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
454 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
456 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
458 scsi_do_read(opaque
, ret
);
459 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
462 /* Read more data from scsi device into buffer. */
463 static void scsi_read_data(SCSIRequest
*req
)
465 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
466 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
469 trace_scsi_disk_read_data_count(r
->sector_count
);
470 if (r
->sector_count
== 0) {
471 /* This also clears the sense buffer for REQUEST SENSE. */
472 scsi_req_complete(&r
->req
, GOOD
);
476 /* No data transfer may already be in progress */
477 assert(r
->req
.aiocb
== NULL
);
479 /* The request is used as the AIO opaque value, so add a ref. */
480 scsi_req_ref(&r
->req
);
481 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
482 trace_scsi_disk_read_data_invalid();
483 scsi_read_complete_noio(r
, -EINVAL
);
487 if (!blk_is_available(req
->dev
->conf
.blk
)) {
488 scsi_read_complete_noio(r
, -ENOMEDIUM
);
494 if (first
&& r
->need_fua_emulation
) {
495 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
497 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_do_read_cb
, r
);
503 static void scsi_write_complete_noio(SCSIDiskReq
*r
, int ret
)
507 assert (r
->req
.aiocb
== NULL
);
508 if (scsi_disk_req_check_error(r
, ret
, false)) {
512 n
= r
->qiov
.size
/ BDRV_SECTOR_SIZE
;
514 r
->sector_count
-= n
;
515 if (r
->sector_count
== 0) {
516 scsi_write_do_fua(r
);
519 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
520 trace_scsi_disk_write_complete_noio(r
->req
.tag
, r
->qiov
.size
);
521 scsi_req_data(&r
->req
, r
->qiov
.size
);
525 scsi_req_unref(&r
->req
);
528 static void scsi_write_complete(void * opaque
, int ret
)
530 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
531 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
533 assert (r
->req
.aiocb
!= NULL
);
536 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
538 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
540 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
542 scsi_write_complete_noio(r
, ret
);
543 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
546 static void scsi_write_data(SCSIRequest
*req
)
548 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
549 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
550 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
552 /* No data transfer may already be in progress */
553 assert(r
->req
.aiocb
== NULL
);
555 /* The request is used as the AIO opaque value, so add a ref. */
556 scsi_req_ref(&r
->req
);
557 if (r
->req
.cmd
.mode
!= SCSI_XFER_TO_DEV
) {
558 trace_scsi_disk_write_data_invalid();
559 scsi_write_complete_noio(r
, -EINVAL
);
563 if (!r
->req
.sg
&& !r
->qiov
.size
) {
564 /* Called for the first time. Ask the driver to send us more data. */
566 scsi_write_complete_noio(r
, 0);
569 if (!blk_is_available(req
->dev
->conf
.blk
)) {
570 scsi_write_complete_noio(r
, -ENOMEDIUM
);
574 if (r
->req
.cmd
.buf
[0] == VERIFY_10
|| r
->req
.cmd
.buf
[0] == VERIFY_12
||
575 r
->req
.cmd
.buf
[0] == VERIFY_16
) {
577 scsi_dma_complete_noio(r
, 0);
579 scsi_write_complete_noio(r
, 0);
585 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_WRITE
);
586 r
->req
.resid
-= r
->req
.sg
->size
;
587 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
588 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
590 sdc
->dma_writev
, r
, scsi_dma_complete
, r
,
591 DMA_DIRECTION_TO_DEVICE
);
593 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
594 r
->qiov
.size
, BLOCK_ACCT_WRITE
);
595 r
->req
.aiocb
= sdc
->dma_writev(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
596 scsi_write_complete
, r
, r
);
600 /* Return a pointer to the data buffer. */
601 static uint8_t *scsi_get_buf(SCSIRequest
*req
)
603 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
605 return (uint8_t *)r
->iov
.iov_base
;
608 static int scsi_disk_emulate_vpd_page(SCSIRequest
*req
, uint8_t *outbuf
)
610 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
611 uint8_t page_code
= req
->cmd
.buf
[2];
612 int start
, buflen
= 0;
614 outbuf
[buflen
++] = s
->qdev
.type
& 0x1f;
615 outbuf
[buflen
++] = page_code
;
616 outbuf
[buflen
++] = 0x00;
617 outbuf
[buflen
++] = 0x00;
621 case 0x00: /* Supported page codes, mandatory */
623 trace_scsi_disk_emulate_vpd_page_00(req
->cmd
.xfer
);
624 outbuf
[buflen
++] = 0x00; /* list of supported pages (this page) */
626 outbuf
[buflen
++] = 0x80; /* unit serial number */
628 outbuf
[buflen
++] = 0x83; /* device identification */
629 if (s
->qdev
.type
== TYPE_DISK
) {
630 outbuf
[buflen
++] = 0xb0; /* block limits */
631 outbuf
[buflen
++] = 0xb1; /* block device characteristics */
632 outbuf
[buflen
++] = 0xb2; /* thin provisioning */
636 case 0x80: /* Device serial number, optional */
641 trace_scsi_disk_emulate_vpd_page_80_not_supported();
645 l
= strlen(s
->serial
);
650 trace_scsi_disk_emulate_vpd_page_80(req
->cmd
.xfer
);
651 memcpy(outbuf
+ buflen
, s
->serial
, l
);
656 case 0x83: /* Device identification page, mandatory */
658 int id_len
= s
->device_id
? MIN(strlen(s
->device_id
), 255 - 8) : 0;
660 trace_scsi_disk_emulate_vpd_page_83(req
->cmd
.xfer
);
663 outbuf
[buflen
++] = 0x2; /* ASCII */
664 outbuf
[buflen
++] = 0; /* not officially assigned */
665 outbuf
[buflen
++] = 0; /* reserved */
666 outbuf
[buflen
++] = id_len
; /* length of data following */
667 memcpy(outbuf
+ buflen
, s
->device_id
, id_len
);
672 outbuf
[buflen
++] = 0x1; /* Binary */
673 outbuf
[buflen
++] = 0x3; /* NAA */
674 outbuf
[buflen
++] = 0; /* reserved */
675 outbuf
[buflen
++] = 8;
676 stq_be_p(&outbuf
[buflen
], s
->qdev
.wwn
);
680 if (s
->qdev
.port_wwn
) {
681 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
682 outbuf
[buflen
++] = 0x93; /* PIV / Target port / NAA */
683 outbuf
[buflen
++] = 0; /* reserved */
684 outbuf
[buflen
++] = 8;
685 stq_be_p(&outbuf
[buflen
], s
->qdev
.port_wwn
);
690 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
692 /* PIV/Target port/relative target port */
693 outbuf
[buflen
++] = 0x94;
695 outbuf
[buflen
++] = 0; /* reserved */
696 outbuf
[buflen
++] = 4;
697 stw_be_p(&outbuf
[buflen
+ 2], s
->port_index
);
702 case 0xb0: /* block limits */
704 SCSIBlockLimits bl
= {};
706 if (s
->qdev
.type
== TYPE_ROM
) {
707 trace_scsi_disk_emulate_vpd_page_b0_not_supported();
712 s
->qdev
.conf
.discard_granularity
/ s
->qdev
.blocksize
;
714 s
->qdev
.conf
.min_io_size
/ s
->qdev
.blocksize
;
716 s
->qdev
.conf
.opt_io_size
/ s
->qdev
.blocksize
;
717 bl
.max_unmap_sectors
=
718 s
->max_unmap_size
/ s
->qdev
.blocksize
;
720 s
->max_io_size
/ s
->qdev
.blocksize
;
721 /* 255 descriptors fit in 4 KiB with an 8-byte header */
722 bl
.max_unmap_descr
= 255;
724 if (s
->qdev
.type
== TYPE_DISK
) {
725 int max_transfer_blk
= blk_get_max_transfer(s
->qdev
.conf
.blk
);
726 int max_io_sectors_blk
=
727 max_transfer_blk
/ s
->qdev
.blocksize
;
730 MIN_NON_ZERO(max_io_sectors_blk
, bl
.max_io_sectors
);
732 buflen
+= scsi_emulate_block_limits(outbuf
+ buflen
, &bl
);
735 case 0xb1: /* block device characteristics */
738 outbuf
[4] = (s
->rotation_rate
>> 8) & 0xff;
739 outbuf
[5] = s
->rotation_rate
& 0xff;
740 outbuf
[6] = 0; /* PRODUCT TYPE */
741 outbuf
[7] = 0; /* WABEREQ | WACEREQ | NOMINAL FORM FACTOR */
742 outbuf
[8] = 0; /* VBULS */
745 case 0xb2: /* thin provisioning */
749 outbuf
[5] = 0xe0; /* unmap & write_same 10/16 all supported */
750 outbuf
[6] = s
->qdev
.conf
.discard_granularity
? 2 : 1;
758 assert(buflen
- start
<= 255);
759 outbuf
[start
- 1] = buflen
- start
;
763 static int scsi_disk_emulate_inquiry(SCSIRequest
*req
, uint8_t *outbuf
)
765 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
768 if (req
->cmd
.buf
[1] & 0x1) {
769 /* Vital product data */
770 return scsi_disk_emulate_vpd_page(req
, outbuf
);
773 /* Standard INQUIRY data */
774 if (req
->cmd
.buf
[2] != 0) {
779 buflen
= req
->cmd
.xfer
;
780 if (buflen
> SCSI_MAX_INQUIRY_LEN
) {
781 buflen
= SCSI_MAX_INQUIRY_LEN
;
784 outbuf
[0] = s
->qdev
.type
& 0x1f;
785 outbuf
[1] = (s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) ? 0x80 : 0;
787 strpadcpy((char *) &outbuf
[16], 16, s
->product
, ' ');
788 strpadcpy((char *) &outbuf
[8], 8, s
->vendor
, ' ');
790 memset(&outbuf
[32], 0, 4);
791 memcpy(&outbuf
[32], s
->version
, MIN(4, strlen(s
->version
)));
793 * We claim conformance to SPC-3, which is required for guests
794 * to ask for modern features like READ CAPACITY(16) or the
795 * block characteristics VPD page by default. Not all of SPC-3
796 * is actually implemented, but we're good enough.
798 outbuf
[2] = s
->qdev
.default_scsi_version
;
799 outbuf
[3] = 2 | 0x10; /* Format 2, HiSup */
802 outbuf
[4] = buflen
- 5; /* Additional Length = (Len - 1) - 4 */
804 /* If the allocation length of CDB is too small,
805 the additional length is not adjusted */
809 /* Sync data transfer and TCQ. */
810 outbuf
[7] = 0x10 | (req
->bus
->info
->tcq
? 0x02 : 0);
814 static inline bool media_is_dvd(SCSIDiskState
*s
)
817 if (s
->qdev
.type
!= TYPE_ROM
) {
820 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
823 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
824 return nb_sectors
> CD_MAX_SECTORS
;
827 static inline bool media_is_cd(SCSIDiskState
*s
)
830 if (s
->qdev
.type
!= TYPE_ROM
) {
833 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
836 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
837 return nb_sectors
<= CD_MAX_SECTORS
;
840 static int scsi_read_disc_information(SCSIDiskState
*s
, SCSIDiskReq
*r
,
843 uint8_t type
= r
->req
.cmd
.buf
[1] & 7;
845 if (s
->qdev
.type
!= TYPE_ROM
) {
849 /* Types 1/2 are only defined for Blu-Ray. */
851 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
855 memset(outbuf
, 0, 34);
857 outbuf
[2] = 0xe; /* last session complete, disc finalized */
858 outbuf
[3] = 1; /* first track on disc */
859 outbuf
[4] = 1; /* # of sessions */
860 outbuf
[5] = 1; /* first track of last session */
861 outbuf
[6] = 1; /* last track of last session */
862 outbuf
[7] = 0x20; /* unrestricted use */
863 outbuf
[8] = 0x00; /* CD-ROM or DVD-ROM */
864 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
865 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
866 /* 24-31: disc bar code */
867 /* 32: disc application code */
868 /* 33: number of OPC tables */
873 static int scsi_read_dvd_structure(SCSIDiskState
*s
, SCSIDiskReq
*r
,
876 static const int rds_caps_size
[5] = {
883 uint8_t media
= r
->req
.cmd
.buf
[1];
884 uint8_t layer
= r
->req
.cmd
.buf
[6];
885 uint8_t format
= r
->req
.cmd
.buf
[7];
888 if (s
->qdev
.type
!= TYPE_ROM
) {
892 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
896 if (format
!= 0xff) {
897 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
898 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
901 if (media_is_cd(s
)) {
902 scsi_check_condition(r
, SENSE_CODE(INCOMPATIBLE_FORMAT
));
905 if (format
>= ARRAY_SIZE(rds_caps_size
)) {
908 size
= rds_caps_size
[format
];
909 memset(outbuf
, 0, size
);
914 /* Physical format information */
919 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
921 outbuf
[4] = 1; /* DVD-ROM, part version 1 */
922 outbuf
[5] = 0xf; /* 120mm disc, minimum rate unspecified */
923 outbuf
[6] = 1; /* one layer, read-only (per MMC-2 spec) */
924 outbuf
[7] = 0; /* default densities */
926 stl_be_p(&outbuf
[12], (nb_sectors
>> 2) - 1); /* end sector */
927 stl_be_p(&outbuf
[16], (nb_sectors
>> 2) - 1); /* l0 end sector */
931 case 0x01: /* DVD copyright information, all zeros */
934 case 0x03: /* BCA information - invalid field for no BCA info */
937 case 0x04: /* DVD disc manufacturing information, all zeros */
940 case 0xff: { /* List capabilities */
943 for (i
= 0; i
< ARRAY_SIZE(rds_caps_size
); i
++) {
944 if (!rds_caps_size
[i
]) {
948 outbuf
[size
+ 1] = 0x40; /* Not writable, readable */
949 stw_be_p(&outbuf
[size
+ 2], rds_caps_size
[i
]);
959 /* Size of buffer, not including 2 byte size field */
960 stw_be_p(outbuf
, size
- 2);
967 static int scsi_event_status_media(SCSIDiskState
*s
, uint8_t *outbuf
)
969 uint8_t event_code
, media_status
;
973 media_status
= MS_TRAY_OPEN
;
974 } else if (blk_is_inserted(s
->qdev
.conf
.blk
)) {
975 media_status
= MS_MEDIA_PRESENT
;
978 /* Event notification descriptor */
979 event_code
= MEC_NO_CHANGE
;
980 if (media_status
!= MS_TRAY_OPEN
) {
981 if (s
->media_event
) {
982 event_code
= MEC_NEW_MEDIA
;
983 s
->media_event
= false;
984 } else if (s
->eject_request
) {
985 event_code
= MEC_EJECT_REQUESTED
;
986 s
->eject_request
= false;
990 outbuf
[0] = event_code
;
991 outbuf
[1] = media_status
;
993 /* These fields are reserved, just clear them. */
999 static int scsi_get_event_status_notification(SCSIDiskState
*s
, SCSIDiskReq
*r
,
1003 uint8_t *buf
= r
->req
.cmd
.buf
;
1004 uint8_t notification_class_request
= buf
[4];
1005 if (s
->qdev
.type
!= TYPE_ROM
) {
1008 if ((buf
[1] & 1) == 0) {
1014 outbuf
[0] = outbuf
[1] = 0;
1015 outbuf
[3] = 1 << GESN_MEDIA
; /* supported events */
1016 if (notification_class_request
& (1 << GESN_MEDIA
)) {
1017 outbuf
[2] = GESN_MEDIA
;
1018 size
+= scsi_event_status_media(s
, &outbuf
[size
]);
1022 stw_be_p(outbuf
, size
- 4);
1026 static int scsi_get_configuration(SCSIDiskState
*s
, uint8_t *outbuf
)
1030 if (s
->qdev
.type
!= TYPE_ROM
) {
1034 if (media_is_dvd(s
)) {
1035 current
= MMC_PROFILE_DVD_ROM
;
1036 } else if (media_is_cd(s
)) {
1037 current
= MMC_PROFILE_CD_ROM
;
1039 current
= MMC_PROFILE_NONE
;
1042 memset(outbuf
, 0, 40);
1043 stl_be_p(&outbuf
[0], 36); /* Bytes after the data length field */
1044 stw_be_p(&outbuf
[6], current
);
1045 /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
1046 outbuf
[10] = 0x03; /* persistent, current */
1047 outbuf
[11] = 8; /* two profiles */
1048 stw_be_p(&outbuf
[12], MMC_PROFILE_DVD_ROM
);
1049 outbuf
[14] = (current
== MMC_PROFILE_DVD_ROM
);
1050 stw_be_p(&outbuf
[16], MMC_PROFILE_CD_ROM
);
1051 outbuf
[18] = (current
== MMC_PROFILE_CD_ROM
);
1052 /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
1053 stw_be_p(&outbuf
[20], 1);
1054 outbuf
[22] = 0x08 | 0x03; /* version 2, persistent, current */
1056 stl_be_p(&outbuf
[24], 1); /* SCSI */
1057 outbuf
[28] = 1; /* DBE = 1, mandatory */
1058 /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
1059 stw_be_p(&outbuf
[32], 3);
1060 outbuf
[34] = 0x08 | 0x03; /* version 2, persistent, current */
1062 outbuf
[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
1063 /* TODO: Random readable, CD read, DVD read, drive serial number,
1068 static int scsi_emulate_mechanism_status(SCSIDiskState
*s
, uint8_t *outbuf
)
1070 if (s
->qdev
.type
!= TYPE_ROM
) {
1073 memset(outbuf
, 0, 8);
1074 outbuf
[5] = 1; /* CD-ROM */
1078 static int mode_sense_page(SCSIDiskState
*s
, int page
, uint8_t **p_outbuf
,
1081 static const int mode_sense_valid
[0x3f] = {
1082 [MODE_PAGE_HD_GEOMETRY
] = (1 << TYPE_DISK
),
1083 [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
] = (1 << TYPE_DISK
),
1084 [MODE_PAGE_CACHING
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1085 [MODE_PAGE_R_W_ERROR
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1086 [MODE_PAGE_AUDIO_CTL
] = (1 << TYPE_ROM
),
1087 [MODE_PAGE_CAPABILITIES
] = (1 << TYPE_ROM
),
1090 uint8_t *p
= *p_outbuf
+ 2;
1093 if ((mode_sense_valid
[page
] & (1 << s
->qdev
.type
)) == 0) {
1098 * If Changeable Values are requested, a mask denoting those mode parameters
1099 * that are changeable shall be returned. As we currently don't support
1100 * parameter changes via MODE_SELECT all bits are returned set to zero.
1101 * The buffer was already menset to zero by the caller of this function.
1103 * The offsets here are off by two compared to the descriptions in the
1104 * SCSI specs, because those include a 2-byte header. This is unfortunate,
1105 * but it is done so that offsets are consistent within our implementation
1106 * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
1107 * 2-byte and 4-byte headers.
1110 case MODE_PAGE_HD_GEOMETRY
:
1112 if (page_control
== 1) { /* Changeable Values */
1115 /* if a geometry hint is available, use it */
1116 p
[0] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1117 p
[1] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1118 p
[2] = s
->qdev
.conf
.cyls
& 0xff;
1119 p
[3] = s
->qdev
.conf
.heads
& 0xff;
1120 /* Write precomp start cylinder, disabled */
1121 p
[4] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1122 p
[5] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1123 p
[6] = s
->qdev
.conf
.cyls
& 0xff;
1124 /* Reduced current start cylinder, disabled */
1125 p
[7] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1126 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1127 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1128 /* Device step rate [ns], 200ns */
1131 /* Landing zone cylinder */
1135 /* Medium rotation rate [rpm], 5400 rpm */
1136 p
[18] = (5400 >> 8) & 0xff;
1137 p
[19] = 5400 & 0xff;
1140 case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
:
1142 if (page_control
== 1) { /* Changeable Values */
1145 /* Transfer rate [kbit/s], 5Mbit/s */
1148 /* if a geometry hint is available, use it */
1149 p
[2] = s
->qdev
.conf
.heads
& 0xff;
1150 p
[3] = s
->qdev
.conf
.secs
& 0xff;
1151 p
[4] = s
->qdev
.blocksize
>> 8;
1152 p
[6] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1153 p
[7] = s
->qdev
.conf
.cyls
& 0xff;
1154 /* Write precomp start cylinder, disabled */
1155 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1156 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1157 /* Reduced current start cylinder, disabled */
1158 p
[10] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1159 p
[11] = s
->qdev
.conf
.cyls
& 0xff;
1160 /* Device step rate [100us], 100us */
1163 /* Device step pulse width [us], 1us */
1165 /* Device head settle delay [100us], 100us */
1168 /* Motor on delay [0.1s], 0.1s */
1170 /* Motor off delay [0.1s], 0.1s */
1172 /* Medium rotation rate [rpm], 5400 rpm */
1173 p
[26] = (5400 >> 8) & 0xff;
1174 p
[27] = 5400 & 0xff;
1177 case MODE_PAGE_CACHING
:
1179 if (page_control
== 1 || /* Changeable Values */
1180 blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1185 case MODE_PAGE_R_W_ERROR
:
1187 if (page_control
== 1) { /* Changeable Values */
1190 p
[0] = 0x80; /* Automatic Write Reallocation Enabled */
1191 if (s
->qdev
.type
== TYPE_ROM
) {
1192 p
[1] = 0x20; /* Read Retry Count */
1196 case MODE_PAGE_AUDIO_CTL
:
1200 case MODE_PAGE_CAPABILITIES
:
1202 if (page_control
== 1) { /* Changeable Values */
1206 p
[0] = 0x3b; /* CD-R & CD-RW read */
1207 p
[1] = 0; /* Writing not supported */
1208 p
[2] = 0x7f; /* Audio, composite, digital out,
1209 mode 2 form 1&2, multi session */
1210 p
[3] = 0xff; /* CD DA, DA accurate, RW supported,
1211 RW corrected, C2 errors, ISRC,
1213 p
[4] = 0x2d | (s
->tray_locked
? 2 : 0);
1214 /* Locking supported, jumper present, eject, tray */
1215 p
[5] = 0; /* no volume & mute control, no
1217 p
[6] = (50 * 176) >> 8; /* 50x read speed */
1218 p
[7] = (50 * 176) & 0xff;
1219 p
[8] = 2 >> 8; /* Two volume levels */
1221 p
[10] = 2048 >> 8; /* 2M buffer */
1222 p
[11] = 2048 & 0xff;
1223 p
[12] = (16 * 176) >> 8; /* 16x read speed current */
1224 p
[13] = (16 * 176) & 0xff;
1225 p
[16] = (16 * 176) >> 8; /* 16x write speed */
1226 p
[17] = (16 * 176) & 0xff;
1227 p
[18] = (16 * 176) >> 8; /* 16x write speed current */
1228 p
[19] = (16 * 176) & 0xff;
1235 assert(length
< 256);
1236 (*p_outbuf
)[0] = page
;
1237 (*p_outbuf
)[1] = length
;
1238 *p_outbuf
+= length
+ 2;
1242 static int scsi_disk_emulate_mode_sense(SCSIDiskReq
*r
, uint8_t *outbuf
)
1244 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1245 uint64_t nb_sectors
;
1247 int page
, buflen
, ret
, page_control
;
1249 uint8_t dev_specific_param
;
1251 dbd
= (r
->req
.cmd
.buf
[1] & 0x8) != 0;
1252 page
= r
->req
.cmd
.buf
[2] & 0x3f;
1253 page_control
= (r
->req
.cmd
.buf
[2] & 0xc0) >> 6;
1255 trace_scsi_disk_emulate_mode_sense((r
->req
.cmd
.buf
[0] == MODE_SENSE
) ? 6 :
1256 10, page
, r
->req
.cmd
.xfer
, page_control
);
1257 memset(outbuf
, 0, r
->req
.cmd
.xfer
);
1260 if (s
->qdev
.type
== TYPE_DISK
) {
1261 dev_specific_param
= s
->features
& (1 << SCSI_DISK_F_DPOFUA
) ? 0x10 : 0;
1262 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
1263 dev_specific_param
|= 0x80; /* Readonly. */
1266 /* MMC prescribes that CD/DVD drives have no block descriptors,
1267 * and defines no device-specific parameter. */
1268 dev_specific_param
= 0x00;
1272 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1273 p
[1] = 0; /* Default media type. */
1274 p
[2] = dev_specific_param
;
1275 p
[3] = 0; /* Block descriptor length. */
1277 } else { /* MODE_SENSE_10 */
1278 p
[2] = 0; /* Default media type. */
1279 p
[3] = dev_specific_param
;
1280 p
[6] = p
[7] = 0; /* Block descriptor length. */
1284 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1285 if (!dbd
&& nb_sectors
) {
1286 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1287 outbuf
[3] = 8; /* Block descriptor length */
1288 } else { /* MODE_SENSE_10 */
1289 outbuf
[7] = 8; /* Block descriptor length */
1291 nb_sectors
/= (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1292 if (nb_sectors
> 0xffffff) {
1295 p
[0] = 0; /* media density code */
1296 p
[1] = (nb_sectors
>> 16) & 0xff;
1297 p
[2] = (nb_sectors
>> 8) & 0xff;
1298 p
[3] = nb_sectors
& 0xff;
1299 p
[4] = 0; /* reserved */
1300 p
[5] = 0; /* bytes 5-7 are the sector size in bytes */
1301 p
[6] = s
->qdev
.blocksize
>> 8;
1306 if (page_control
== 3) {
1308 scsi_check_condition(r
, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED
));
1313 for (page
= 0; page
<= 0x3e; page
++) {
1314 mode_sense_page(s
, page
, &p
, page_control
);
1317 ret
= mode_sense_page(s
, page
, &p
, page_control
);
1323 buflen
= p
- outbuf
;
1325 * The mode data length field specifies the length in bytes of the
1326 * following data that is available to be transferred. The mode data
1327 * length does not include itself.
1329 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1330 outbuf
[0] = buflen
- 1;
1331 } else { /* MODE_SENSE_10 */
1332 outbuf
[0] = ((buflen
- 2) >> 8) & 0xff;
1333 outbuf
[1] = (buflen
- 2) & 0xff;
1338 static int scsi_disk_emulate_read_toc(SCSIRequest
*req
, uint8_t *outbuf
)
1340 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1341 int start_track
, format
, msf
, toclen
;
1342 uint64_t nb_sectors
;
1344 msf
= req
->cmd
.buf
[1] & 2;
1345 format
= req
->cmd
.buf
[2] & 0xf;
1346 start_track
= req
->cmd
.buf
[6];
1347 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1348 trace_scsi_disk_emulate_read_toc(start_track
, format
, msf
>> 1);
1349 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
1352 toclen
= cdrom_read_toc(nb_sectors
, outbuf
, msf
, start_track
);
1355 /* multi session : only a single session defined */
1357 memset(outbuf
, 0, 12);
1363 toclen
= cdrom_read_toc_raw(nb_sectors
, outbuf
, msf
, start_track
);
1371 static int scsi_disk_emulate_start_stop(SCSIDiskReq
*r
)
1373 SCSIRequest
*req
= &r
->req
;
1374 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1375 bool start
= req
->cmd
.buf
[4] & 1;
1376 bool loej
= req
->cmd
.buf
[4] & 2; /* load on start, eject on !start */
1377 int pwrcnd
= req
->cmd
.buf
[4] & 0xf0;
1380 /* eject/load only happens for power condition == 0 */
1384 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) && loej
) {
1385 if (!start
&& !s
->tray_open
&& s
->tray_locked
) {
1386 scsi_check_condition(r
,
1387 blk_is_inserted(s
->qdev
.conf
.blk
)
1388 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED
)
1389 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED
));
1393 if (s
->tray_open
!= !start
) {
1394 blk_eject(s
->qdev
.conf
.blk
, !start
);
1395 s
->tray_open
= !start
;
1401 static void scsi_disk_emulate_read_data(SCSIRequest
*req
)
1403 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1404 int buflen
= r
->iov
.iov_len
;
1407 trace_scsi_disk_emulate_read_data(buflen
);
1410 scsi_req_data(&r
->req
, buflen
);
1414 /* This also clears the sense buffer for REQUEST SENSE. */
1415 scsi_req_complete(&r
->req
, GOOD
);
1418 static int scsi_disk_check_mode_select(SCSIDiskState
*s
, int page
,
1419 uint8_t *inbuf
, int inlen
)
1421 uint8_t mode_current
[SCSI_MAX_MODE_LEN
];
1422 uint8_t mode_changeable
[SCSI_MAX_MODE_LEN
];
1424 int len
, expected_len
, changeable_len
, i
;
1426 /* The input buffer does not include the page header, so it is
1429 expected_len
= inlen
+ 2;
1430 if (expected_len
> SCSI_MAX_MODE_LEN
) {
1435 memset(mode_current
, 0, inlen
+ 2);
1436 len
= mode_sense_page(s
, page
, &p
, 0);
1437 if (len
< 0 || len
!= expected_len
) {
1441 p
= mode_changeable
;
1442 memset(mode_changeable
, 0, inlen
+ 2);
1443 changeable_len
= mode_sense_page(s
, page
, &p
, 1);
1444 assert(changeable_len
== len
);
1446 /* Check that unchangeable bits are the same as what MODE SENSE
1449 for (i
= 2; i
< len
; i
++) {
1450 if (((mode_current
[i
] ^ inbuf
[i
- 2]) & ~mode_changeable
[i
]) != 0) {
1457 static void scsi_disk_apply_mode_select(SCSIDiskState
*s
, int page
, uint8_t *p
)
1460 case MODE_PAGE_CACHING
:
1461 blk_set_enable_write_cache(s
->qdev
.conf
.blk
, (p
[0] & 4) != 0);
1469 static int mode_select_pages(SCSIDiskReq
*r
, uint8_t *p
, int len
, bool change
)
1471 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1474 int page
, subpage
, page_len
;
1476 /* Parse both possible formats for the mode page headers. */
1480 goto invalid_param_len
;
1483 page_len
= lduw_be_p(&p
[2]);
1488 goto invalid_param_len
;
1499 if (page_len
> len
) {
1500 goto invalid_param_len
;
1504 if (scsi_disk_check_mode_select(s
, page
, p
, page_len
) < 0) {
1508 scsi_disk_apply_mode_select(s
, page
, p
);
1517 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1521 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1525 static void scsi_disk_emulate_mode_select(SCSIDiskReq
*r
, uint8_t *inbuf
)
1527 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1529 int cmd
= r
->req
.cmd
.buf
[0];
1530 int len
= r
->req
.cmd
.xfer
;
1531 int hdr_len
= (cmd
== MODE_SELECT
? 4 : 8);
1535 /* We only support PF=1, SP=0. */
1536 if ((r
->req
.cmd
.buf
[1] & 0x11) != 0x10) {
1540 if (len
< hdr_len
) {
1541 goto invalid_param_len
;
1544 bd_len
= (cmd
== MODE_SELECT
? p
[3] : lduw_be_p(&p
[6]));
1548 goto invalid_param_len
;
1550 if (bd_len
!= 0 && bd_len
!= 8) {
1557 /* Ensure no change is made if there is an error! */
1558 for (pass
= 0; pass
< 2; pass
++) {
1559 if (mode_select_pages(r
, p
, len
, pass
== 1) < 0) {
1564 if (!blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1565 /* The request is used as the AIO opaque value, so add a ref. */
1566 scsi_req_ref(&r
->req
);
1567 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
1569 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
1573 scsi_req_complete(&r
->req
, GOOD
);
1577 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1581 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1585 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1588 static inline bool check_lba_range(SCSIDiskState
*s
,
1589 uint64_t sector_num
, uint32_t nb_sectors
)
1592 * The first line tests that no overflow happens when computing the last
1593 * sector. The second line tests that the last accessed sector is in
1596 * Careful, the computations should not underflow for nb_sectors == 0,
1597 * and a 0-block read to the first LBA beyond the end of device is
1600 return (sector_num
<= sector_num
+ nb_sectors
&&
1601 sector_num
+ nb_sectors
<= s
->qdev
.max_lba
+ 1);
1604 typedef struct UnmapCBData
{
1610 static void scsi_unmap_complete(void *opaque
, int ret
);
1612 static void scsi_unmap_complete_noio(UnmapCBData
*data
, int ret
)
1614 SCSIDiskReq
*r
= data
->r
;
1615 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1617 assert(r
->req
.aiocb
== NULL
);
1619 if (data
->count
> 0) {
1620 r
->sector
= ldq_be_p(&data
->inbuf
[0])
1621 * (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1622 r
->sector_count
= (ldl_be_p(&data
->inbuf
[8]) & 0xffffffffULL
)
1623 * (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1624 if (!check_lba_range(s
, r
->sector
, r
->sector_count
)) {
1625 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
),
1627 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1631 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1632 r
->sector_count
* BDRV_SECTOR_SIZE
,
1635 r
->req
.aiocb
= blk_aio_pdiscard(s
->qdev
.conf
.blk
,
1636 r
->sector
* BDRV_SECTOR_SIZE
,
1637 r
->sector_count
* BDRV_SECTOR_SIZE
,
1638 scsi_unmap_complete
, data
);
1644 scsi_req_complete(&r
->req
, GOOD
);
1647 scsi_req_unref(&r
->req
);
1651 static void scsi_unmap_complete(void *opaque
, int ret
)
1653 UnmapCBData
*data
= opaque
;
1654 SCSIDiskReq
*r
= data
->r
;
1655 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1657 assert(r
->req
.aiocb
!= NULL
);
1658 r
->req
.aiocb
= NULL
;
1660 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1661 if (scsi_disk_req_check_error(r
, ret
, true)) {
1662 scsi_req_unref(&r
->req
);
1665 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1666 scsi_unmap_complete_noio(data
, ret
);
1668 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1671 static void scsi_disk_emulate_unmap(SCSIDiskReq
*r
, uint8_t *inbuf
)
1673 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1675 int len
= r
->req
.cmd
.xfer
;
1678 /* Reject ANCHOR=1. */
1679 if (r
->req
.cmd
.buf
[1] & 0x1) {
1684 goto invalid_param_len
;
1686 if (len
< lduw_be_p(&p
[0]) + 2) {
1687 goto invalid_param_len
;
1689 if (len
< lduw_be_p(&p
[2]) + 8) {
1690 goto invalid_param_len
;
1692 if (lduw_be_p(&p
[2]) & 15) {
1693 goto invalid_param_len
;
1696 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
1697 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1698 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1702 data
= g_new0(UnmapCBData
, 1);
1704 data
->inbuf
= &p
[8];
1705 data
->count
= lduw_be_p(&p
[2]) >> 4;
1707 /* The matching unref is in scsi_unmap_complete, before data is freed. */
1708 scsi_req_ref(&r
->req
);
1709 scsi_unmap_complete_noio(data
, 0);
1713 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1714 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1718 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1719 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1722 typedef struct WriteSameCBData
{
1730 static void scsi_write_same_complete(void *opaque
, int ret
)
1732 WriteSameCBData
*data
= opaque
;
1733 SCSIDiskReq
*r
= data
->r
;
1734 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1736 assert(r
->req
.aiocb
!= NULL
);
1737 r
->req
.aiocb
= NULL
;
1738 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1739 if (scsi_disk_req_check_error(r
, ret
, true)) {
1743 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1745 data
->nb_sectors
-= data
->iov
.iov_len
/ BDRV_SECTOR_SIZE
;
1746 data
->sector
+= data
->iov
.iov_len
/ BDRV_SECTOR_SIZE
;
1747 data
->iov
.iov_len
= MIN(data
->nb_sectors
* BDRV_SECTOR_SIZE
,
1749 if (data
->iov
.iov_len
) {
1750 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1751 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1752 /* Reinitialize qiov, to handle unaligned WRITE SAME request
1753 * where final qiov may need smaller size */
1754 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1755 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1756 data
->sector
<< BDRV_SECTOR_BITS
,
1758 scsi_write_same_complete
, data
);
1759 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1763 scsi_req_complete(&r
->req
, GOOD
);
1766 scsi_req_unref(&r
->req
);
1767 qemu_vfree(data
->iov
.iov_base
);
1769 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1772 static void scsi_disk_emulate_write_same(SCSIDiskReq
*r
, uint8_t *inbuf
)
1774 SCSIRequest
*req
= &r
->req
;
1775 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1776 uint32_t nb_sectors
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
1777 WriteSameCBData
*data
;
1781 /* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */
1782 if (nb_sectors
== 0 || (req
->cmd
.buf
[1] & 0x16)) {
1783 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1787 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
1788 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1791 if (!check_lba_range(s
, r
->req
.cmd
.lba
, nb_sectors
)) {
1792 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1796 if ((req
->cmd
.buf
[1] & 0x1) || buffer_is_zero(inbuf
, s
->qdev
.blocksize
)) {
1797 int flags
= (req
->cmd
.buf
[1] & 0x8) ? BDRV_REQ_MAY_UNMAP
: 0;
1799 /* The request is used as the AIO opaque value, so add a ref. */
1800 scsi_req_ref(&r
->req
);
1801 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1802 nb_sectors
* s
->qdev
.blocksize
,
1804 r
->req
.aiocb
= blk_aio_pwrite_zeroes(s
->qdev
.conf
.blk
,
1805 r
->req
.cmd
.lba
* s
->qdev
.blocksize
,
1806 nb_sectors
* s
->qdev
.blocksize
,
1807 flags
, scsi_aio_complete
, r
);
1811 data
= g_new0(WriteSameCBData
, 1);
1813 data
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1814 data
->nb_sectors
= nb_sectors
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1815 data
->iov
.iov_len
= MIN(data
->nb_sectors
* BDRV_SECTOR_SIZE
,
1816 SCSI_WRITE_SAME_MAX
);
1817 data
->iov
.iov_base
= buf
= blk_blockalign(s
->qdev
.conf
.blk
,
1819 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1821 for (i
= 0; i
< data
->iov
.iov_len
; i
+= s
->qdev
.blocksize
) {
1822 memcpy(&buf
[i
], inbuf
, s
->qdev
.blocksize
);
1825 scsi_req_ref(&r
->req
);
1826 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1827 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1828 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1829 data
->sector
<< BDRV_SECTOR_BITS
,
1831 scsi_write_same_complete
, data
);
1834 static void scsi_disk_emulate_write_data(SCSIRequest
*req
)
1836 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1838 if (r
->iov
.iov_len
) {
1839 int buflen
= r
->iov
.iov_len
;
1840 trace_scsi_disk_emulate_write_data(buflen
);
1842 scsi_req_data(&r
->req
, buflen
);
1846 switch (req
->cmd
.buf
[0]) {
1848 case MODE_SELECT_10
:
1849 /* This also clears the sense buffer for REQUEST SENSE. */
1850 scsi_disk_emulate_mode_select(r
, r
->iov
.iov_base
);
1854 scsi_disk_emulate_unmap(r
, r
->iov
.iov_base
);
1860 if (r
->req
.status
== -1) {
1861 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1867 scsi_disk_emulate_write_same(r
, r
->iov
.iov_base
);
1875 static int32_t scsi_disk_emulate_command(SCSIRequest
*req
, uint8_t *buf
)
1877 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1878 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1879 uint64_t nb_sectors
;
1883 switch (req
->cmd
.buf
[0]) {
1892 case ALLOW_MEDIUM_REMOVAL
:
1893 case GET_CONFIGURATION
:
1894 case GET_EVENT_STATUS_NOTIFICATION
:
1895 case MECHANISM_STATUS
:
1900 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
1901 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
1908 * FIXME: we shouldn't return anything bigger than 4k, but the code
1909 * requires the buffer to be as big as req->cmd.xfer in several
1910 * places. So, do not allow CDBs with a very large ALLOCATION
1911 * LENGTH. The real fix would be to modify scsi_read_data and
1912 * dma_buf_read, so that they return data beyond the buflen
1915 if (req
->cmd
.xfer
> 65536) {
1916 goto illegal_request
;
1918 r
->buflen
= MAX(4096, req
->cmd
.xfer
);
1920 if (!r
->iov
.iov_base
) {
1921 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
1924 outbuf
= r
->iov
.iov_base
;
1925 memset(outbuf
, 0, r
->buflen
);
1926 switch (req
->cmd
.buf
[0]) {
1927 case TEST_UNIT_READY
:
1928 assert(blk_is_available(s
->qdev
.conf
.blk
));
1931 buflen
= scsi_disk_emulate_inquiry(req
, outbuf
);
1933 goto illegal_request
;
1938 buflen
= scsi_disk_emulate_mode_sense(r
, outbuf
);
1940 goto illegal_request
;
1944 buflen
= scsi_disk_emulate_read_toc(req
, outbuf
);
1946 goto illegal_request
;
1950 if (req
->cmd
.buf
[1] & 1) {
1951 goto illegal_request
;
1955 if (req
->cmd
.buf
[1] & 3) {
1956 goto illegal_request
;
1960 if (req
->cmd
.buf
[1] & 1) {
1961 goto illegal_request
;
1965 if (req
->cmd
.buf
[1] & 3) {
1966 goto illegal_request
;
1970 if (scsi_disk_emulate_start_stop(r
) < 0) {
1974 case ALLOW_MEDIUM_REMOVAL
:
1975 s
->tray_locked
= req
->cmd
.buf
[4] & 1;
1976 blk_lock_medium(s
->qdev
.conf
.blk
, req
->cmd
.buf
[4] & 1);
1978 case READ_CAPACITY_10
:
1979 /* The normal LEN field for this command is zero. */
1980 memset(outbuf
, 0, 8);
1981 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1983 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
1986 if ((req
->cmd
.buf
[8] & 1) == 0 && req
->cmd
.lba
) {
1987 goto illegal_request
;
1989 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
1990 /* Returned value is the address of the last sector. */
1992 /* Remember the new size for read/write sanity checking. */
1993 s
->qdev
.max_lba
= nb_sectors
;
1994 /* Clip to 2TB, instead of returning capacity modulo 2TB. */
1995 if (nb_sectors
> UINT32_MAX
) {
1996 nb_sectors
= UINT32_MAX
;
1998 outbuf
[0] = (nb_sectors
>> 24) & 0xff;
1999 outbuf
[1] = (nb_sectors
>> 16) & 0xff;
2000 outbuf
[2] = (nb_sectors
>> 8) & 0xff;
2001 outbuf
[3] = nb_sectors
& 0xff;
2004 outbuf
[6] = s
->qdev
.blocksize
>> 8;
2008 /* Just return "NO SENSE". */
2009 buflen
= scsi_convert_sense(NULL
, 0, outbuf
, r
->buflen
,
2010 (req
->cmd
.buf
[1] & 1) == 0);
2012 goto illegal_request
;
2015 case MECHANISM_STATUS
:
2016 buflen
= scsi_emulate_mechanism_status(s
, outbuf
);
2018 goto illegal_request
;
2021 case GET_CONFIGURATION
:
2022 buflen
= scsi_get_configuration(s
, outbuf
);
2024 goto illegal_request
;
2027 case GET_EVENT_STATUS_NOTIFICATION
:
2028 buflen
= scsi_get_event_status_notification(s
, r
, outbuf
);
2030 goto illegal_request
;
2033 case READ_DISC_INFORMATION
:
2034 buflen
= scsi_read_disc_information(s
, r
, outbuf
);
2036 goto illegal_request
;
2039 case READ_DVD_STRUCTURE
:
2040 buflen
= scsi_read_dvd_structure(s
, r
, outbuf
);
2042 goto illegal_request
;
2045 case SERVICE_ACTION_IN_16
:
2046 /* Service Action In subcommands. */
2047 if ((req
->cmd
.buf
[1] & 31) == SAI_READ_CAPACITY_16
) {
2048 trace_scsi_disk_emulate_command_SAI_16();
2049 memset(outbuf
, 0, req
->cmd
.xfer
);
2050 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2052 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
2055 if ((req
->cmd
.buf
[14] & 1) == 0 && req
->cmd
.lba
) {
2056 goto illegal_request
;
2058 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
2059 /* Returned value is the address of the last sector. */
2061 /* Remember the new size for read/write sanity checking. */
2062 s
->qdev
.max_lba
= nb_sectors
;
2063 outbuf
[0] = (nb_sectors
>> 56) & 0xff;
2064 outbuf
[1] = (nb_sectors
>> 48) & 0xff;
2065 outbuf
[2] = (nb_sectors
>> 40) & 0xff;
2066 outbuf
[3] = (nb_sectors
>> 32) & 0xff;
2067 outbuf
[4] = (nb_sectors
>> 24) & 0xff;
2068 outbuf
[5] = (nb_sectors
>> 16) & 0xff;
2069 outbuf
[6] = (nb_sectors
>> 8) & 0xff;
2070 outbuf
[7] = nb_sectors
& 0xff;
2073 outbuf
[10] = s
->qdev
.blocksize
>> 8;
2076 outbuf
[13] = get_physical_block_exp(&s
->qdev
.conf
);
2078 /* set TPE bit if the format supports discard */
2079 if (s
->qdev
.conf
.discard_granularity
) {
2083 /* Protection, exponent and lowest lba field left blank. */
2086 trace_scsi_disk_emulate_command_SAI_unsupported();
2087 goto illegal_request
;
2088 case SYNCHRONIZE_CACHE
:
2089 /* The request is used as the AIO opaque value, so add a ref. */
2090 scsi_req_ref(&r
->req
);
2091 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
2093 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
2096 trace_scsi_disk_emulate_command_SEEK_10(r
->req
.cmd
.lba
);
2097 if (r
->req
.cmd
.lba
> s
->qdev
.max_lba
) {
2102 trace_scsi_disk_emulate_command_MODE_SELECT(r
->req
.cmd
.xfer
);
2104 case MODE_SELECT_10
:
2105 trace_scsi_disk_emulate_command_MODE_SELECT_10(r
->req
.cmd
.xfer
);
2108 trace_scsi_disk_emulate_command_UNMAP(r
->req
.cmd
.xfer
);
2113 trace_scsi_disk_emulate_command_VERIFY((req
->cmd
.buf
[1] >> 1) & 3);
2114 if (req
->cmd
.buf
[1] & 6) {
2115 goto illegal_request
;
2120 trace_scsi_disk_emulate_command_WRITE_SAME(
2121 req
->cmd
.buf
[0] == WRITE_SAME_10
? 10 : 16, r
->req
.cmd
.xfer
);
2124 trace_scsi_disk_emulate_command_UNKNOWN(buf
[0],
2125 scsi_command_name(buf
[0]));
2126 scsi_check_condition(r
, SENSE_CODE(INVALID_OPCODE
));
2129 assert(!r
->req
.aiocb
);
2130 r
->iov
.iov_len
= MIN(r
->buflen
, req
->cmd
.xfer
);
2131 if (r
->iov
.iov_len
== 0) {
2132 scsi_req_complete(&r
->req
, GOOD
);
2134 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2135 assert(r
->iov
.iov_len
== req
->cmd
.xfer
);
2136 return -r
->iov
.iov_len
;
2138 return r
->iov
.iov_len
;
2142 if (r
->req
.status
== -1) {
2143 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2148 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2152 /* Execute a scsi command. Returns the length of the data expected by the
2153 command. This will be Positive for data transfers from the device
2154 (eg. disk reads), negative for transfers to the device (eg. disk writes),
2155 and zero if the command does not transfer any data. */
2157 static int32_t scsi_disk_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2159 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2160 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2161 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
2167 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
2168 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
2172 len
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
2178 trace_scsi_disk_dma_command_READ(r
->req
.cmd
.lba
, len
);
2179 /* Protection information is not supported. For SCSI versions 2 and
2180 * older (as determined by snooping the guest's INQUIRY commands),
2181 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2183 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2184 goto illegal_request
;
2186 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2189 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2190 r
->sector_count
= len
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2196 case WRITE_VERIFY_10
:
2197 case WRITE_VERIFY_12
:
2198 case WRITE_VERIFY_16
:
2199 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
2200 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
2203 trace_scsi_disk_dma_command_WRITE(
2204 (command
& 0xe) == 0xe ? "And Verify " : "",
2205 r
->req
.cmd
.lba
, len
);
2210 /* We get here only for BYTCHK == 0x01 and only for scsi-block.
2211 * As far as DMA is concerned, we can treat it the same as a write;
2212 * scsi_block_do_sgio will send VERIFY commands.
2214 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2215 goto illegal_request
;
2217 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2220 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2221 r
->sector_count
= len
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2226 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2229 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2232 r
->need_fua_emulation
= sdc
->need_fua_emulation(&r
->req
.cmd
);
2233 if (r
->sector_count
== 0) {
2234 scsi_req_complete(&r
->req
, GOOD
);
2236 assert(r
->iov
.iov_len
== 0);
2237 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2238 return -r
->sector_count
* BDRV_SECTOR_SIZE
;
2240 return r
->sector_count
* BDRV_SECTOR_SIZE
;
2244 static void scsi_disk_reset(DeviceState
*dev
)
2246 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
.qdev
, dev
);
2247 uint64_t nb_sectors
;
2249 scsi_device_purge_requests(&s
->qdev
, SENSE_CODE(RESET
));
2251 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2252 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
2256 s
->qdev
.max_lba
= nb_sectors
;
2257 /* reset tray statuses */
2261 s
->qdev
.scsi_version
= s
->qdev
.default_scsi_version
;
2264 static void scsi_disk_resize_cb(void *opaque
)
2266 SCSIDiskState
*s
= opaque
;
2268 /* SPC lists this sense code as available only for
2269 * direct-access devices.
2271 if (s
->qdev
.type
== TYPE_DISK
) {
2272 scsi_device_report_change(&s
->qdev
, SENSE_CODE(CAPACITY_CHANGED
));
2276 static void scsi_cd_change_media_cb(void *opaque
, bool load
, Error
**errp
)
2278 SCSIDiskState
*s
= opaque
;
2281 * When a CD gets changed, we have to report an ejected state and
2282 * then a loaded state to guests so that they detect tray
2283 * open/close and media change events. Guests that do not use
2284 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
2285 * states rely on this behavior.
2287 * media_changed governs the state machine used for unit attention
2288 * report. media_event is used by GET EVENT STATUS NOTIFICATION.
2290 s
->media_changed
= load
;
2291 s
->tray_open
= !load
;
2292 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM
));
2293 s
->media_event
= true;
2294 s
->eject_request
= false;
2297 static void scsi_cd_eject_request_cb(void *opaque
, bool force
)
2299 SCSIDiskState
*s
= opaque
;
2301 s
->eject_request
= true;
2303 s
->tray_locked
= false;
2307 static bool scsi_cd_is_tray_open(void *opaque
)
2309 return ((SCSIDiskState
*)opaque
)->tray_open
;
2312 static bool scsi_cd_is_medium_locked(void *opaque
)
2314 return ((SCSIDiskState
*)opaque
)->tray_locked
;
2317 static const BlockDevOps scsi_disk_removable_block_ops
= {
2318 .change_media_cb
= scsi_cd_change_media_cb
,
2319 .eject_request_cb
= scsi_cd_eject_request_cb
,
2320 .is_tray_open
= scsi_cd_is_tray_open
,
2321 .is_medium_locked
= scsi_cd_is_medium_locked
,
2323 .resize_cb
= scsi_disk_resize_cb
,
2326 static const BlockDevOps scsi_disk_block_ops
= {
2327 .resize_cb
= scsi_disk_resize_cb
,
2330 static void scsi_disk_unit_attention_reported(SCSIDevice
*dev
)
2332 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2333 if (s
->media_changed
) {
2334 s
->media_changed
= false;
2335 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(MEDIUM_CHANGED
));
2339 static void scsi_realize(SCSIDevice
*dev
, Error
**errp
)
2341 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2344 if (!s
->qdev
.conf
.blk
) {
2345 error_setg(errp
, "drive property not set");
2349 if (!(s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2350 !blk_is_inserted(s
->qdev
.conf
.blk
)) {
2351 error_setg(errp
, "Device needs media, but drive is empty");
2355 if (!blkconf_blocksizes(&s
->qdev
.conf
, errp
)) {
2359 if (blk_get_aio_context(s
->qdev
.conf
.blk
) != qemu_get_aio_context() &&
2360 !s
->qdev
.hba_supports_iothread
)
2362 error_setg(errp
, "HBA does not support iothreads");
2366 if (dev
->type
== TYPE_DISK
) {
2367 if (!blkconf_geometry(&dev
->conf
, NULL
, 65535, 255, 255, errp
)) {
2372 read_only
= !blk_supports_write_perm(s
->qdev
.conf
.blk
);
2373 if (dev
->type
== TYPE_ROM
) {
2377 if (!blkconf_apply_backend_options(&dev
->conf
, read_only
,
2378 dev
->type
== TYPE_DISK
, errp
)) {
2382 if (s
->qdev
.conf
.discard_granularity
== -1) {
2383 s
->qdev
.conf
.discard_granularity
=
2384 MAX(s
->qdev
.conf
.logical_block_size
, DEFAULT_DISCARD_GRANULARITY
);
2388 s
->version
= g_strdup(qemu_hw_version());
2391 s
->vendor
= g_strdup("QEMU");
2393 if (!s
->device_id
) {
2395 s
->device_id
= g_strdup_printf("%.20s", s
->serial
);
2397 const char *str
= blk_name(s
->qdev
.conf
.blk
);
2399 s
->device_id
= g_strdup(str
);
2404 if (blk_is_sg(s
->qdev
.conf
.blk
)) {
2405 error_setg(errp
, "unwanted /dev/sg*");
2409 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2410 !(s
->features
& (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
))) {
2411 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_removable_block_ops
, s
);
2413 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_block_ops
, s
);
2415 blk_set_guest_block_size(s
->qdev
.conf
.blk
, s
->qdev
.blocksize
);
2417 blk_iostatus_enable(s
->qdev
.conf
.blk
);
2419 add_boot_device_lchs(&dev
->qdev
, NULL
,
2425 static void scsi_unrealize(SCSIDevice
*dev
)
2427 del_boot_device_lchs(&dev
->qdev
, NULL
);
2430 static void scsi_hd_realize(SCSIDevice
*dev
, Error
**errp
)
2432 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2433 AioContext
*ctx
= NULL
;
2434 /* can happen for devices without drive. The error message for missing
2435 * backend will be issued in scsi_realize
2437 if (s
->qdev
.conf
.blk
) {
2438 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2439 aio_context_acquire(ctx
);
2440 if (!blkconf_blocksizes(&s
->qdev
.conf
, errp
)) {
2444 s
->qdev
.blocksize
= s
->qdev
.conf
.logical_block_size
;
2445 s
->qdev
.type
= TYPE_DISK
;
2447 s
->product
= g_strdup("QEMU HARDDISK");
2449 scsi_realize(&s
->qdev
, errp
);
2452 aio_context_release(ctx
);
2456 static void scsi_cd_realize(SCSIDevice
*dev
, Error
**errp
)
2458 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2462 if (!dev
->conf
.blk
) {
2463 /* Anonymous BlockBackend for an empty drive. As we put it into
2464 * dev->conf, qdev takes care of detaching on unplug. */
2465 dev
->conf
.blk
= blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL
);
2466 ret
= blk_attach_dev(dev
->conf
.blk
, &dev
->qdev
);
2470 ctx
= blk_get_aio_context(dev
->conf
.blk
);
2471 aio_context_acquire(ctx
);
2472 s
->qdev
.blocksize
= 2048;
2473 s
->qdev
.type
= TYPE_ROM
;
2474 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2476 s
->product
= g_strdup("QEMU CD-ROM");
2478 scsi_realize(&s
->qdev
, errp
);
2479 aio_context_release(ctx
);
2482 static void scsi_disk_realize(SCSIDevice
*dev
, Error
**errp
)
2485 Error
*local_err
= NULL
;
2487 warn_report("'scsi-disk' is deprecated, "
2488 "please use 'scsi-hd' or 'scsi-cd' instead");
2490 if (!dev
->conf
.blk
) {
2491 scsi_realize(dev
, &local_err
);
2493 error_propagate(errp
, local_err
);
2497 dinfo
= blk_legacy_dinfo(dev
->conf
.blk
);
2498 if (dinfo
&& dinfo
->media_cd
) {
2499 scsi_cd_realize(dev
, errp
);
2501 scsi_hd_realize(dev
, errp
);
2505 static const SCSIReqOps scsi_disk_emulate_reqops
= {
2506 .size
= sizeof(SCSIDiskReq
),
2507 .free_req
= scsi_free_request
,
2508 .send_command
= scsi_disk_emulate_command
,
2509 .read_data
= scsi_disk_emulate_read_data
,
2510 .write_data
= scsi_disk_emulate_write_data
,
2511 .get_buf
= scsi_get_buf
,
2514 static const SCSIReqOps scsi_disk_dma_reqops
= {
2515 .size
= sizeof(SCSIDiskReq
),
2516 .free_req
= scsi_free_request
,
2517 .send_command
= scsi_disk_dma_command
,
2518 .read_data
= scsi_read_data
,
2519 .write_data
= scsi_write_data
,
2520 .get_buf
= scsi_get_buf
,
2521 .load_request
= scsi_disk_load_request
,
2522 .save_request
= scsi_disk_save_request
,
2525 static const SCSIReqOps
*const scsi_disk_reqops_dispatch
[256] = {
2526 [TEST_UNIT_READY
] = &scsi_disk_emulate_reqops
,
2527 [INQUIRY
] = &scsi_disk_emulate_reqops
,
2528 [MODE_SENSE
] = &scsi_disk_emulate_reqops
,
2529 [MODE_SENSE_10
] = &scsi_disk_emulate_reqops
,
2530 [START_STOP
] = &scsi_disk_emulate_reqops
,
2531 [ALLOW_MEDIUM_REMOVAL
] = &scsi_disk_emulate_reqops
,
2532 [READ_CAPACITY_10
] = &scsi_disk_emulate_reqops
,
2533 [READ_TOC
] = &scsi_disk_emulate_reqops
,
2534 [READ_DVD_STRUCTURE
] = &scsi_disk_emulate_reqops
,
2535 [READ_DISC_INFORMATION
] = &scsi_disk_emulate_reqops
,
2536 [GET_CONFIGURATION
] = &scsi_disk_emulate_reqops
,
2537 [GET_EVENT_STATUS_NOTIFICATION
] = &scsi_disk_emulate_reqops
,
2538 [MECHANISM_STATUS
] = &scsi_disk_emulate_reqops
,
2539 [SERVICE_ACTION_IN_16
] = &scsi_disk_emulate_reqops
,
2540 [REQUEST_SENSE
] = &scsi_disk_emulate_reqops
,
2541 [SYNCHRONIZE_CACHE
] = &scsi_disk_emulate_reqops
,
2542 [SEEK_10
] = &scsi_disk_emulate_reqops
,
2543 [MODE_SELECT
] = &scsi_disk_emulate_reqops
,
2544 [MODE_SELECT_10
] = &scsi_disk_emulate_reqops
,
2545 [UNMAP
] = &scsi_disk_emulate_reqops
,
2546 [WRITE_SAME_10
] = &scsi_disk_emulate_reqops
,
2547 [WRITE_SAME_16
] = &scsi_disk_emulate_reqops
,
2548 [VERIFY_10
] = &scsi_disk_emulate_reqops
,
2549 [VERIFY_12
] = &scsi_disk_emulate_reqops
,
2550 [VERIFY_16
] = &scsi_disk_emulate_reqops
,
2552 [READ_6
] = &scsi_disk_dma_reqops
,
2553 [READ_10
] = &scsi_disk_dma_reqops
,
2554 [READ_12
] = &scsi_disk_dma_reqops
,
2555 [READ_16
] = &scsi_disk_dma_reqops
,
2556 [WRITE_6
] = &scsi_disk_dma_reqops
,
2557 [WRITE_10
] = &scsi_disk_dma_reqops
,
2558 [WRITE_12
] = &scsi_disk_dma_reqops
,
2559 [WRITE_16
] = &scsi_disk_dma_reqops
,
2560 [WRITE_VERIFY_10
] = &scsi_disk_dma_reqops
,
2561 [WRITE_VERIFY_12
] = &scsi_disk_dma_reqops
,
2562 [WRITE_VERIFY_16
] = &scsi_disk_dma_reqops
,
2565 static void scsi_disk_new_request_dump(uint32_t lun
, uint32_t tag
, uint8_t *buf
)
2568 int len
= scsi_cdb_length(buf
);
2569 char *line_buffer
, *p
;
2571 line_buffer
= g_malloc(len
* 5 + 1);
2573 for (i
= 0, p
= line_buffer
; i
< len
; i
++) {
2574 p
+= sprintf(p
, " 0x%02x", buf
[i
]);
2576 trace_scsi_disk_new_request(lun
, tag
, line_buffer
);
2578 g_free(line_buffer
);
2581 static SCSIRequest
*scsi_new_request(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
2582 uint8_t *buf
, void *hba_private
)
2584 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2586 const SCSIReqOps
*ops
;
2590 ops
= scsi_disk_reqops_dispatch
[command
];
2592 ops
= &scsi_disk_emulate_reqops
;
2594 req
= scsi_req_alloc(ops
, &s
->qdev
, tag
, lun
, hba_private
);
2596 if (trace_event_get_state_backends(TRACE_SCSI_DISK_NEW_REQUEST
)) {
2597 scsi_disk_new_request_dump(lun
, tag
, buf
);
2604 static int get_device_type(SCSIDiskState
*s
)
2610 memset(cmd
, 0, sizeof(cmd
));
2611 memset(buf
, 0, sizeof(buf
));
2613 cmd
[4] = sizeof(buf
);
2615 ret
= scsi_SG_IO_FROM_DEV(s
->qdev
.conf
.blk
, cmd
, sizeof(cmd
),
2616 buf
, sizeof(buf
), s
->qdev
.io_timeout
);
2620 s
->qdev
.type
= buf
[0];
2621 if (buf
[1] & 0x80) {
2622 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2627 static void scsi_block_realize(SCSIDevice
*dev
, Error
**errp
)
2629 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2634 if (!s
->qdev
.conf
.blk
) {
2635 error_setg(errp
, "drive property not set");
2639 if (s
->rotation_rate
) {
2640 error_report_once("rotation_rate is specified for scsi-block but is "
2641 "not implemented. This option is deprecated and will "
2642 "be removed in a future version");
2645 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2646 aio_context_acquire(ctx
);
2648 /* check we are using a driver managing SG_IO (version 3 and after) */
2649 rc
= blk_ioctl(s
->qdev
.conf
.blk
, SG_GET_VERSION_NUM
, &sg_version
);
2651 error_setg_errno(errp
, -rc
, "cannot get SG_IO version number");
2653 error_append_hint(errp
, "Is this a SCSI device?\n");
2657 if (sg_version
< 30000) {
2658 error_setg(errp
, "scsi generic interface too old");
2662 /* get device type from INQUIRY data */
2663 rc
= get_device_type(s
);
2665 error_setg(errp
, "INQUIRY failed");
2669 /* Make a guess for the block size, we'll fix it when the guest sends.
2670 * READ CAPACITY. If they don't, they likely would assume these sizes
2671 * anyway. (TODO: check in /sys).
2673 if (s
->qdev
.type
== TYPE_ROM
|| s
->qdev
.type
== TYPE_WORM
) {
2674 s
->qdev
.blocksize
= 2048;
2676 s
->qdev
.blocksize
= 512;
2679 /* Makes the scsi-block device not removable by using HMP and QMP eject
2682 s
->features
|= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
);
2684 scsi_realize(&s
->qdev
, errp
);
2685 scsi_generic_read_device_inquiry(&s
->qdev
);
2688 aio_context_release(ctx
);
2691 typedef struct SCSIBlockReq
{
2693 sg_io_hdr_t io_header
;
2695 /* Selected bytes of the original CDB, copied into our own CDB. */
2696 uint8_t cmd
, cdb1
, group_number
;
2698 /* CDB passed to SG_IO. */
2702 static BlockAIOCB
*scsi_block_do_sgio(SCSIBlockReq
*req
,
2703 int64_t offset
, QEMUIOVector
*iov
,
2705 BlockCompletionFunc
*cb
, void *opaque
)
2707 sg_io_hdr_t
*io_header
= &req
->io_header
;
2708 SCSIDiskReq
*r
= &req
->req
;
2709 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2710 int nb_logical_blocks
;
2714 /* This is not supported yet. It can only happen if the guest does
2715 * reads and writes that are not aligned to one logical sectors
2716 * _and_ cover multiple MemoryRegions.
2718 assert(offset
% s
->qdev
.blocksize
== 0);
2719 assert(iov
->size
% s
->qdev
.blocksize
== 0);
2721 io_header
->interface_id
= 'S';
2723 /* The data transfer comes from the QEMUIOVector. */
2724 io_header
->dxfer_direction
= direction
;
2725 io_header
->dxfer_len
= iov
->size
;
2726 io_header
->dxferp
= (void *)iov
->iov
;
2727 io_header
->iovec_count
= iov
->niov
;
2728 assert(io_header
->iovec_count
== iov
->niov
); /* no overflow! */
2730 /* Build a new CDB with the LBA and length patched in, in case
2731 * DMA helpers split the transfer in multiple segments. Do not
2732 * build a CDB smaller than what the guest wanted, and only build
2733 * a larger one if strictly necessary.
2735 io_header
->cmdp
= req
->cdb
;
2736 lba
= offset
/ s
->qdev
.blocksize
;
2737 nb_logical_blocks
= io_header
->dxfer_len
/ s
->qdev
.blocksize
;
2739 if ((req
->cmd
>> 5) == 0 && lba
<= 0x1ffff) {
2741 stl_be_p(&req
->cdb
[0], lba
| (req
->cmd
<< 24));
2742 req
->cdb
[4] = nb_logical_blocks
;
2744 io_header
->cmd_len
= 6;
2745 } else if ((req
->cmd
>> 5) <= 1 && lba
<= 0xffffffffULL
) {
2747 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x20;
2748 req
->cdb
[1] = req
->cdb1
;
2749 stl_be_p(&req
->cdb
[2], lba
);
2750 req
->cdb
[6] = req
->group_number
;
2751 stw_be_p(&req
->cdb
[7], nb_logical_blocks
);
2753 io_header
->cmd_len
= 10;
2754 } else if ((req
->cmd
>> 5) != 4 && lba
<= 0xffffffffULL
) {
2756 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0xA0;
2757 req
->cdb
[1] = req
->cdb1
;
2758 stl_be_p(&req
->cdb
[2], lba
);
2759 stl_be_p(&req
->cdb
[6], nb_logical_blocks
);
2760 req
->cdb
[10] = req
->group_number
;
2762 io_header
->cmd_len
= 12;
2765 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x80;
2766 req
->cdb
[1] = req
->cdb1
;
2767 stq_be_p(&req
->cdb
[2], lba
);
2768 stl_be_p(&req
->cdb
[10], nb_logical_blocks
);
2769 req
->cdb
[14] = req
->group_number
;
2771 io_header
->cmd_len
= 16;
2774 /* The rest is as in scsi-generic.c. */
2775 io_header
->mx_sb_len
= sizeof(r
->req
.sense
);
2776 io_header
->sbp
= r
->req
.sense
;
2777 io_header
->timeout
= s
->qdev
.io_timeout
* 1000;
2778 io_header
->usr_ptr
= r
;
2779 io_header
->flags
|= SG_FLAG_DIRECT_IO
;
2780 trace_scsi_disk_aio_sgio_command(r
->req
.tag
, req
->cdb
[0], lba
,
2781 nb_logical_blocks
, io_header
->timeout
);
2782 aiocb
= blk_aio_ioctl(s
->qdev
.conf
.blk
, SG_IO
, io_header
, cb
, opaque
);
2783 assert(aiocb
!= NULL
);
2787 static bool scsi_block_no_fua(SCSICommand
*cmd
)
2792 static BlockAIOCB
*scsi_block_dma_readv(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_FROM_DEV
, cb
, cb_opaque
);
2802 static BlockAIOCB
*scsi_block_dma_writev(int64_t offset
,
2804 BlockCompletionFunc
*cb
, void *cb_opaque
,
2807 SCSIBlockReq
*r
= opaque
;
2808 return scsi_block_do_sgio(r
, offset
, iov
,
2809 SG_DXFER_TO_DEV
, cb
, cb_opaque
);
2812 static bool scsi_block_is_passthrough(SCSIDiskState
*s
, uint8_t *buf
)
2818 /* Check if BYTCHK == 0x01 (data-out buffer contains data
2819 * for the number of logical blocks specified in the length
2820 * field). For other modes, do not use scatter/gather operation.
2822 if ((buf
[1] & 6) == 2) {
2835 case WRITE_VERIFY_10
:
2836 case WRITE_VERIFY_12
:
2837 case WRITE_VERIFY_16
:
2838 /* MMC writing cannot be done via DMA helpers, because it sometimes
2839 * involves writing beyond the maximum LBA or to negative LBA (lead-in).
2840 * We might use scsi_block_dma_reqops as long as no writing commands are
2841 * seen, but performance usually isn't paramount on optical media. So,
2842 * just make scsi-block operate the same as scsi-generic for them.
2844 if (s
->qdev
.type
!= TYPE_ROM
) {
2857 static int32_t scsi_block_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2859 SCSIBlockReq
*r
= (SCSIBlockReq
*)req
;
2860 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2862 r
->cmd
= req
->cmd
.buf
[0];
2863 switch (r
->cmd
>> 5) {
2866 r
->cdb1
= r
->group_number
= 0;
2870 r
->cdb1
= req
->cmd
.buf
[1];
2871 r
->group_number
= req
->cmd
.buf
[6];
2875 r
->cdb1
= req
->cmd
.buf
[1];
2876 r
->group_number
= req
->cmd
.buf
[10];
2880 r
->cdb1
= req
->cmd
.buf
[1];
2881 r
->group_number
= req
->cmd
.buf
[14];
2887 /* Protection information is not supported. For SCSI versions 2 and
2888 * older (as determined by snooping the guest's INQUIRY commands),
2889 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2891 if (s
->qdev
.scsi_version
> 2 && (req
->cmd
.buf
[1] & 0xe0)) {
2892 scsi_check_condition(&r
->req
, SENSE_CODE(INVALID_FIELD
));
2896 r
->req
.status
= &r
->io_header
.status
;
2897 return scsi_disk_dma_command(req
, buf
);
2900 static const SCSIReqOps scsi_block_dma_reqops
= {
2901 .size
= sizeof(SCSIBlockReq
),
2902 .free_req
= scsi_free_request
,
2903 .send_command
= scsi_block_dma_command
,
2904 .read_data
= scsi_read_data
,
2905 .write_data
= scsi_write_data
,
2906 .get_buf
= scsi_get_buf
,
2907 .load_request
= scsi_disk_load_request
,
2908 .save_request
= scsi_disk_save_request
,
2911 static SCSIRequest
*scsi_block_new_request(SCSIDevice
*d
, uint32_t tag
,
2912 uint32_t lun
, uint8_t *buf
,
2915 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2917 if (scsi_block_is_passthrough(s
, buf
)) {
2918 return scsi_req_alloc(&scsi_generic_req_ops
, &s
->qdev
, tag
, lun
,
2921 return scsi_req_alloc(&scsi_block_dma_reqops
, &s
->qdev
, tag
, lun
,
2926 static int scsi_block_parse_cdb(SCSIDevice
*d
, SCSICommand
*cmd
,
2927 uint8_t *buf
, void *hba_private
)
2929 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2931 if (scsi_block_is_passthrough(s
, buf
)) {
2932 return scsi_bus_parse_cdb(&s
->qdev
, cmd
, buf
, hba_private
);
2934 return scsi_req_parse_cdb(&s
->qdev
, cmd
, buf
);
2938 static void scsi_block_update_sense(SCSIRequest
*req
)
2940 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2941 SCSIBlockReq
*br
= DO_UPCAST(SCSIBlockReq
, req
, r
);
2942 r
->req
.sense_len
= MIN(br
->io_header
.sb_len_wr
, sizeof(r
->req
.sense
));
2947 BlockAIOCB
*scsi_dma_readv(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_preadv(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2957 BlockAIOCB
*scsi_dma_writev(int64_t offset
, QEMUIOVector
*iov
,
2958 BlockCompletionFunc
*cb
, void *cb_opaque
,
2961 SCSIDiskReq
*r
= opaque
;
2962 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2963 return blk_aio_pwritev(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2966 static void scsi_disk_base_class_initfn(ObjectClass
*klass
, void *data
)
2968 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2969 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
2971 dc
->fw_name
= "disk";
2972 dc
->reset
= scsi_disk_reset
;
2973 sdc
->dma_readv
= scsi_dma_readv
;
2974 sdc
->dma_writev
= scsi_dma_writev
;
2975 sdc
->need_fua_emulation
= scsi_is_cmd_fua
;
2978 static const TypeInfo scsi_disk_base_info
= {
2979 .name
= TYPE_SCSI_DISK_BASE
,
2980 .parent
= TYPE_SCSI_DEVICE
,
2981 .class_init
= scsi_disk_base_class_initfn
,
2982 .instance_size
= sizeof(SCSIDiskState
),
2983 .class_size
= sizeof(SCSIDiskClass
),
2987 #define DEFINE_SCSI_DISK_PROPERTIES() \
2988 DEFINE_PROP_DRIVE_IOTHREAD("drive", SCSIDiskState, qdev.conf.blk), \
2989 DEFINE_BLOCK_PROPERTIES_BASE(SCSIDiskState, qdev.conf), \
2990 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
2991 DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
2992 DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
2993 DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
2994 DEFINE_PROP_STRING("product", SCSIDiskState, product), \
2995 DEFINE_PROP_STRING("device_id", SCSIDiskState, device_id)
2998 static Property scsi_hd_properties
[] = {
2999 DEFINE_SCSI_DISK_PROPERTIES(),
3000 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
3001 SCSI_DISK_F_REMOVABLE
, false),
3002 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
3003 SCSI_DISK_F_DPOFUA
, false),
3004 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3005 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3006 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3007 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3008 DEFAULT_MAX_UNMAP_SIZE
),
3009 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3010 DEFAULT_MAX_IO_SIZE
),
3011 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
3012 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3014 DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState
, qdev
.conf
),
3015 DEFINE_PROP_END_OF_LIST(),
3018 static const VMStateDescription vmstate_scsi_disk_state
= {
3019 .name
= "scsi-disk",
3021 .minimum_version_id
= 1,
3022 .fields
= (VMStateField
[]) {
3023 VMSTATE_SCSI_DEVICE(qdev
, SCSIDiskState
),
3024 VMSTATE_BOOL(media_changed
, SCSIDiskState
),
3025 VMSTATE_BOOL(media_event
, SCSIDiskState
),
3026 VMSTATE_BOOL(eject_request
, SCSIDiskState
),
3027 VMSTATE_BOOL(tray_open
, SCSIDiskState
),
3028 VMSTATE_BOOL(tray_locked
, SCSIDiskState
),
3029 VMSTATE_END_OF_LIST()
3033 static void scsi_hd_class_initfn(ObjectClass
*klass
, void *data
)
3035 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3036 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3038 sc
->realize
= scsi_hd_realize
;
3039 sc
->unrealize
= scsi_unrealize
;
3040 sc
->alloc_req
= scsi_new_request
;
3041 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3042 dc
->desc
= "virtual SCSI disk";
3043 device_class_set_props(dc
, scsi_hd_properties
);
3044 dc
->vmsd
= &vmstate_scsi_disk_state
;
3047 static const TypeInfo scsi_hd_info
= {
3049 .parent
= TYPE_SCSI_DISK_BASE
,
3050 .class_init
= scsi_hd_class_initfn
,
3053 static Property scsi_cd_properties
[] = {
3054 DEFINE_SCSI_DISK_PROPERTIES(),
3055 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3056 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3057 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3058 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3059 DEFAULT_MAX_IO_SIZE
),
3060 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3062 DEFINE_PROP_END_OF_LIST(),
3065 static void scsi_cd_class_initfn(ObjectClass
*klass
, void *data
)
3067 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3068 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3070 sc
->realize
= scsi_cd_realize
;
3071 sc
->alloc_req
= scsi_new_request
;
3072 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3073 dc
->desc
= "virtual SCSI CD-ROM";
3074 device_class_set_props(dc
, scsi_cd_properties
);
3075 dc
->vmsd
= &vmstate_scsi_disk_state
;
3078 static const TypeInfo scsi_cd_info
= {
3080 .parent
= TYPE_SCSI_DISK_BASE
,
3081 .class_init
= scsi_cd_class_initfn
,
3085 static Property scsi_block_properties
[] = {
3086 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState
, qdev
.conf
),
3087 DEFINE_PROP_DRIVE("drive", SCSIDiskState
, qdev
.conf
.blk
),
3088 DEFINE_PROP_BOOL("share-rw", SCSIDiskState
, qdev
.conf
.share_rw
, false),
3089 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
3090 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3091 DEFAULT_MAX_UNMAP_SIZE
),
3092 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3093 DEFAULT_MAX_IO_SIZE
),
3094 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3096 DEFINE_PROP_UINT32("io_timeout", SCSIDiskState
, qdev
.io_timeout
,
3097 DEFAULT_IO_TIMEOUT
),
3098 DEFINE_PROP_END_OF_LIST(),
3101 static void scsi_block_class_initfn(ObjectClass
*klass
, void *data
)
3103 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3104 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3105 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
3107 sc
->realize
= scsi_block_realize
;
3108 sc
->alloc_req
= scsi_block_new_request
;
3109 sc
->parse_cdb
= scsi_block_parse_cdb
;
3110 sdc
->dma_readv
= scsi_block_dma_readv
;
3111 sdc
->dma_writev
= scsi_block_dma_writev
;
3112 sdc
->update_sense
= scsi_block_update_sense
;
3113 sdc
->need_fua_emulation
= scsi_block_no_fua
;
3114 dc
->desc
= "SCSI block device passthrough";
3115 device_class_set_props(dc
, scsi_block_properties
);
3116 dc
->vmsd
= &vmstate_scsi_disk_state
;
3119 static const TypeInfo scsi_block_info
= {
3120 .name
= "scsi-block",
3121 .parent
= TYPE_SCSI_DISK_BASE
,
3122 .class_init
= scsi_block_class_initfn
,
3126 static Property scsi_disk_properties
[] = {
3127 DEFINE_SCSI_DISK_PROPERTIES(),
3128 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
3129 SCSI_DISK_F_REMOVABLE
, false),
3130 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
3131 SCSI_DISK_F_DPOFUA
, false),
3132 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3133 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3134 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3135 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3136 DEFAULT_MAX_UNMAP_SIZE
),
3137 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3138 DEFAULT_MAX_IO_SIZE
),
3139 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3141 DEFINE_PROP_END_OF_LIST(),
3144 static void scsi_disk_class_initfn(ObjectClass
*klass
, void *data
)
3146 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3147 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3149 sc
->realize
= scsi_disk_realize
;
3150 sc
->alloc_req
= scsi_new_request
;
3151 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3152 dc
->fw_name
= "disk";
3153 dc
->desc
= "virtual SCSI disk or CD-ROM (legacy)";
3154 dc
->reset
= scsi_disk_reset
;
3155 device_class_set_props(dc
, scsi_disk_properties
);
3156 dc
->vmsd
= &vmstate_scsi_disk_state
;
3159 static const TypeInfo scsi_disk_info
= {
3160 .name
= "scsi-disk",
3161 .parent
= TYPE_SCSI_DISK_BASE
,
3162 .class_init
= scsi_disk_class_initfn
,
3165 static void scsi_disk_register_types(void)
3167 type_register_static(&scsi_disk_base_info
);
3168 type_register_static(&scsi_hd_info
);
3169 type_register_static(&scsi_cd_info
);
3171 type_register_static(&scsi_block_info
);
3173 type_register_static(&scsi_disk_info
);
3176 type_init(scsi_disk_register_types
)