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
;
82 #define SCSI_DISK_F_REMOVABLE 0
83 #define SCSI_DISK_F_DPOFUA 1
84 #define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
86 struct SCSIDiskState
{
93 uint64_t max_unmap_size
;
104 * 0x0000 - rotation rate not reported
105 * 0x0001 - non-rotating medium (SSD)
106 * 0x0002-0x0400 - reserved
107 * 0x0401-0xffe - rotations per minute
110 uint16_t rotation_rate
;
113 static void scsi_free_request(SCSIRequest
*req
)
115 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
117 qemu_vfree(r
->iov
.iov_base
);
120 /* Helper function for command completion with sense. */
121 static void scsi_check_condition(SCSIDiskReq
*r
, SCSISense sense
)
123 trace_scsi_disk_check_condition(r
->req
.tag
, sense
.key
, sense
.asc
,
125 scsi_req_build_sense(&r
->req
, sense
);
126 scsi_req_complete(&r
->req
, CHECK_CONDITION
);
129 static void scsi_init_iovec(SCSIDiskReq
*r
, size_t size
)
131 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
133 if (!r
->iov
.iov_base
) {
135 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
137 r
->iov
.iov_len
= MIN(r
->sector_count
* BDRV_SECTOR_SIZE
, r
->buflen
);
138 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
141 static void scsi_disk_save_request(QEMUFile
*f
, SCSIRequest
*req
)
143 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
145 qemu_put_be64s(f
, &r
->sector
);
146 qemu_put_be32s(f
, &r
->sector_count
);
147 qemu_put_be32s(f
, &r
->buflen
);
149 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
150 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
151 } else if (!req
->retry
) {
152 uint32_t len
= r
->iov
.iov_len
;
153 qemu_put_be32s(f
, &len
);
154 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
159 static void scsi_disk_load_request(QEMUFile
*f
, SCSIRequest
*req
)
161 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
163 qemu_get_be64s(f
, &r
->sector
);
164 qemu_get_be32s(f
, &r
->sector_count
);
165 qemu_get_be32s(f
, &r
->buflen
);
167 scsi_init_iovec(r
, r
->buflen
);
168 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
169 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
170 } else if (!r
->req
.retry
) {
172 qemu_get_be32s(f
, &len
);
173 r
->iov
.iov_len
= len
;
174 assert(r
->iov
.iov_len
<= r
->buflen
);
175 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
179 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
183 * scsi_handle_rw_error has two return values. False means that the error
184 * must be ignored, true means that the error has been processed and the
185 * caller should not do anything else for this request. Note that
186 * scsi_handle_rw_error always manages its reference counts, independent
187 * of the return value.
189 static bool scsi_handle_rw_error(SCSIDiskReq
*r
, int ret
, bool acct_failed
)
191 bool is_read
= (r
->req
.cmd
.mode
== SCSI_XFER_FROM_DEV
);
192 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
193 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
194 SCSISense sense
= SENSE_CODE(NO_SENSE
);
196 bool req_has_sense
= false;
197 BlockErrorAction action
;
201 status
= scsi_sense_from_errno(-ret
, &sense
);
204 /* A passthrough command has completed with nonzero status. */
206 if (status
== CHECK_CONDITION
) {
207 req_has_sense
= true;
208 error
= scsi_sense_buf_to_errno(r
->req
.sense
, sizeof(r
->req
.sense
));
215 * Check whether the error has to be handled by the guest or should
216 * rather follow the rerror=/werror= settings. Guest-handled errors
217 * are usually retried immediately, so do not post them to QMP and
218 * do not account them as failed I/O.
221 scsi_sense_buf_is_guest_recoverable(r
->req
.sense
, sizeof(r
->req
.sense
))) {
222 action
= BLOCK_ERROR_ACTION_REPORT
;
225 action
= blk_get_error_action(s
->qdev
.conf
.blk
, is_read
, error
);
226 blk_error_action(s
->qdev
.conf
.blk
, action
, is_read
, error
);
230 case BLOCK_ERROR_ACTION_REPORT
:
232 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
235 sdc
->update_sense(&r
->req
);
236 } else if (status
== CHECK_CONDITION
) {
237 scsi_req_build_sense(&r
->req
, sense
);
239 scsi_req_complete(&r
->req
, status
);
242 case BLOCK_ERROR_ACTION_IGNORE
:
245 case BLOCK_ERROR_ACTION_STOP
:
246 scsi_req_retry(&r
->req
);
250 g_assert_not_reached();
254 static bool scsi_disk_req_check_error(SCSIDiskReq
*r
, int ret
, bool acct_failed
)
256 if (r
->req
.io_canceled
) {
257 scsi_req_cancel_complete(&r
->req
);
262 return scsi_handle_rw_error(r
, ret
, acct_failed
);
268 static void scsi_aio_complete(void *opaque
, int ret
)
270 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
271 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
273 assert(r
->req
.aiocb
!= NULL
);
275 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
276 if (scsi_disk_req_check_error(r
, ret
, true)) {
280 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
281 scsi_req_complete(&r
->req
, GOOD
);
284 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
285 scsi_req_unref(&r
->req
);
288 static bool scsi_is_cmd_fua(SCSICommand
*cmd
)
290 switch (cmd
->buf
[0]) {
297 return (cmd
->buf
[1] & 8) != 0;
302 case WRITE_VERIFY_10
:
303 case WRITE_VERIFY_12
:
304 case WRITE_VERIFY_16
:
314 static void scsi_write_do_fua(SCSIDiskReq
*r
)
316 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
318 assert(r
->req
.aiocb
== NULL
);
319 assert(!r
->req
.io_canceled
);
321 if (r
->need_fua_emulation
) {
322 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
324 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
328 scsi_req_complete(&r
->req
, GOOD
);
329 scsi_req_unref(&r
->req
);
332 static void scsi_dma_complete_noio(SCSIDiskReq
*r
, int ret
)
334 assert(r
->req
.aiocb
== NULL
);
335 if (scsi_disk_req_check_error(r
, ret
, false)) {
339 r
->sector
+= r
->sector_count
;
341 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
342 scsi_write_do_fua(r
);
345 scsi_req_complete(&r
->req
, GOOD
);
349 scsi_req_unref(&r
->req
);
352 static void scsi_dma_complete(void *opaque
, int ret
)
354 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
355 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
357 assert(r
->req
.aiocb
!= NULL
);
360 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
362 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
364 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
366 scsi_dma_complete_noio(r
, ret
);
367 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
370 static void scsi_read_complete_noio(SCSIDiskReq
*r
, int ret
)
374 assert(r
->req
.aiocb
== NULL
);
375 if (scsi_disk_req_check_error(r
, ret
, false)) {
379 n
= r
->qiov
.size
/ BDRV_SECTOR_SIZE
;
381 r
->sector_count
-= n
;
382 scsi_req_data(&r
->req
, r
->qiov
.size
);
385 scsi_req_unref(&r
->req
);
388 static void scsi_read_complete(void *opaque
, int ret
)
390 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
391 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
393 assert(r
->req
.aiocb
!= NULL
);
396 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
398 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
400 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
401 trace_scsi_disk_read_complete(r
->req
.tag
, r
->qiov
.size
);
403 scsi_read_complete_noio(r
, ret
);
404 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
407 /* Actually issue a read to the block device. */
408 static void scsi_do_read(SCSIDiskReq
*r
, int ret
)
410 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
411 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
413 assert (r
->req
.aiocb
== NULL
);
414 if (scsi_disk_req_check_error(r
, ret
, false)) {
418 /* The request is used as the AIO opaque value, so add a ref. */
419 scsi_req_ref(&r
->req
);
422 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_READ
);
423 r
->req
.resid
-= r
->req
.sg
->size
;
424 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
425 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
427 sdc
->dma_readv
, r
, scsi_dma_complete
, r
,
428 DMA_DIRECTION_FROM_DEVICE
);
430 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
431 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
432 r
->qiov
.size
, BLOCK_ACCT_READ
);
433 r
->req
.aiocb
= sdc
->dma_readv(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
434 scsi_read_complete
, r
, r
);
438 scsi_req_unref(&r
->req
);
441 static void scsi_do_read_cb(void *opaque
, int ret
)
443 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
444 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
446 assert (r
->req
.aiocb
!= NULL
);
449 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
451 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
453 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
455 scsi_do_read(opaque
, ret
);
456 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
459 /* Read more data from scsi device into buffer. */
460 static void scsi_read_data(SCSIRequest
*req
)
462 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
463 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
466 trace_scsi_disk_read_data_count(r
->sector_count
);
467 if (r
->sector_count
== 0) {
468 /* This also clears the sense buffer for REQUEST SENSE. */
469 scsi_req_complete(&r
->req
, GOOD
);
473 /* No data transfer may already be in progress */
474 assert(r
->req
.aiocb
== NULL
);
476 /* The request is used as the AIO opaque value, so add a ref. */
477 scsi_req_ref(&r
->req
);
478 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
479 trace_scsi_disk_read_data_invalid();
480 scsi_read_complete_noio(r
, -EINVAL
);
484 if (!blk_is_available(req
->dev
->conf
.blk
)) {
485 scsi_read_complete_noio(r
, -ENOMEDIUM
);
491 if (first
&& r
->need_fua_emulation
) {
492 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
494 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_do_read_cb
, r
);
500 static void scsi_write_complete_noio(SCSIDiskReq
*r
, int ret
)
504 assert (r
->req
.aiocb
== NULL
);
505 if (scsi_disk_req_check_error(r
, ret
, false)) {
509 n
= r
->qiov
.size
/ BDRV_SECTOR_SIZE
;
511 r
->sector_count
-= n
;
512 if (r
->sector_count
== 0) {
513 scsi_write_do_fua(r
);
516 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
517 trace_scsi_disk_write_complete_noio(r
->req
.tag
, r
->qiov
.size
);
518 scsi_req_data(&r
->req
, r
->qiov
.size
);
522 scsi_req_unref(&r
->req
);
525 static void scsi_write_complete(void * opaque
, int ret
)
527 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
528 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
530 assert (r
->req
.aiocb
!= NULL
);
533 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
535 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
537 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
539 scsi_write_complete_noio(r
, ret
);
540 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
543 static void scsi_write_data(SCSIRequest
*req
)
545 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
546 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
547 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
549 /* No data transfer may already be in progress */
550 assert(r
->req
.aiocb
== NULL
);
552 /* The request is used as the AIO opaque value, so add a ref. */
553 scsi_req_ref(&r
->req
);
554 if (r
->req
.cmd
.mode
!= SCSI_XFER_TO_DEV
) {
555 trace_scsi_disk_write_data_invalid();
556 scsi_write_complete_noio(r
, -EINVAL
);
560 if (!r
->req
.sg
&& !r
->qiov
.size
) {
561 /* Called for the first time. Ask the driver to send us more data. */
563 scsi_write_complete_noio(r
, 0);
566 if (!blk_is_available(req
->dev
->conf
.blk
)) {
567 scsi_write_complete_noio(r
, -ENOMEDIUM
);
571 if (r
->req
.cmd
.buf
[0] == VERIFY_10
|| r
->req
.cmd
.buf
[0] == VERIFY_12
||
572 r
->req
.cmd
.buf
[0] == VERIFY_16
) {
574 scsi_dma_complete_noio(r
, 0);
576 scsi_write_complete_noio(r
, 0);
582 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_WRITE
);
583 r
->req
.resid
-= r
->req
.sg
->size
;
584 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
585 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
587 sdc
->dma_writev
, r
, scsi_dma_complete
, r
,
588 DMA_DIRECTION_TO_DEVICE
);
590 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
591 r
->qiov
.size
, BLOCK_ACCT_WRITE
);
592 r
->req
.aiocb
= sdc
->dma_writev(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
593 scsi_write_complete
, r
, r
);
597 /* Return a pointer to the data buffer. */
598 static uint8_t *scsi_get_buf(SCSIRequest
*req
)
600 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
602 return (uint8_t *)r
->iov
.iov_base
;
605 static int scsi_disk_emulate_vpd_page(SCSIRequest
*req
, uint8_t *outbuf
)
607 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
608 uint8_t page_code
= req
->cmd
.buf
[2];
609 int start
, buflen
= 0;
611 outbuf
[buflen
++] = s
->qdev
.type
& 0x1f;
612 outbuf
[buflen
++] = page_code
;
613 outbuf
[buflen
++] = 0x00;
614 outbuf
[buflen
++] = 0x00;
618 case 0x00: /* Supported page codes, mandatory */
620 trace_scsi_disk_emulate_vpd_page_00(req
->cmd
.xfer
);
621 outbuf
[buflen
++] = 0x00; /* list of supported pages (this page) */
623 outbuf
[buflen
++] = 0x80; /* unit serial number */
625 outbuf
[buflen
++] = 0x83; /* device identification */
626 if (s
->qdev
.type
== TYPE_DISK
) {
627 outbuf
[buflen
++] = 0xb0; /* block limits */
628 outbuf
[buflen
++] = 0xb1; /* block device characteristics */
629 outbuf
[buflen
++] = 0xb2; /* thin provisioning */
633 case 0x80: /* Device serial number, optional */
638 trace_scsi_disk_emulate_vpd_page_80_not_supported();
642 l
= strlen(s
->serial
);
647 trace_scsi_disk_emulate_vpd_page_80(req
->cmd
.xfer
);
648 memcpy(outbuf
+ buflen
, s
->serial
, l
);
653 case 0x83: /* Device identification page, mandatory */
655 int id_len
= s
->device_id
? MIN(strlen(s
->device_id
), 255 - 8) : 0;
657 trace_scsi_disk_emulate_vpd_page_83(req
->cmd
.xfer
);
660 outbuf
[buflen
++] = 0x2; /* ASCII */
661 outbuf
[buflen
++] = 0; /* not officially assigned */
662 outbuf
[buflen
++] = 0; /* reserved */
663 outbuf
[buflen
++] = id_len
; /* length of data following */
664 memcpy(outbuf
+ buflen
, s
->device_id
, id_len
);
669 outbuf
[buflen
++] = 0x1; /* Binary */
670 outbuf
[buflen
++] = 0x3; /* NAA */
671 outbuf
[buflen
++] = 0; /* reserved */
672 outbuf
[buflen
++] = 8;
673 stq_be_p(&outbuf
[buflen
], s
->qdev
.wwn
);
677 if (s
->qdev
.port_wwn
) {
678 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
679 outbuf
[buflen
++] = 0x93; /* PIV / Target port / NAA */
680 outbuf
[buflen
++] = 0; /* reserved */
681 outbuf
[buflen
++] = 8;
682 stq_be_p(&outbuf
[buflen
], s
->qdev
.port_wwn
);
687 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
689 /* PIV/Target port/relative target port */
690 outbuf
[buflen
++] = 0x94;
692 outbuf
[buflen
++] = 0; /* reserved */
693 outbuf
[buflen
++] = 4;
694 stw_be_p(&outbuf
[buflen
+ 2], s
->port_index
);
699 case 0xb0: /* block limits */
701 SCSIBlockLimits bl
= {};
703 if (s
->qdev
.type
== TYPE_ROM
) {
704 trace_scsi_disk_emulate_vpd_page_b0_not_supported();
709 s
->qdev
.conf
.discard_granularity
/ s
->qdev
.blocksize
;
711 s
->qdev
.conf
.min_io_size
/ s
->qdev
.blocksize
;
713 s
->qdev
.conf
.opt_io_size
/ s
->qdev
.blocksize
;
714 bl
.max_unmap_sectors
=
715 s
->max_unmap_size
/ s
->qdev
.blocksize
;
717 s
->max_io_size
/ s
->qdev
.blocksize
;
718 /* 255 descriptors fit in 4 KiB with an 8-byte header */
719 bl
.max_unmap_descr
= 255;
721 if (s
->qdev
.type
== TYPE_DISK
) {
722 int max_transfer_blk
= blk_get_max_transfer(s
->qdev
.conf
.blk
);
723 int max_io_sectors_blk
=
724 max_transfer_blk
/ s
->qdev
.blocksize
;
727 MIN_NON_ZERO(max_io_sectors_blk
, bl
.max_io_sectors
);
729 buflen
+= scsi_emulate_block_limits(outbuf
+ buflen
, &bl
);
732 case 0xb1: /* block device characteristics */
735 outbuf
[4] = (s
->rotation_rate
>> 8) & 0xff;
736 outbuf
[5] = s
->rotation_rate
& 0xff;
737 outbuf
[6] = 0; /* PRODUCT TYPE */
738 outbuf
[7] = 0; /* WABEREQ | WACEREQ | NOMINAL FORM FACTOR */
739 outbuf
[8] = 0; /* VBULS */
742 case 0xb2: /* thin provisioning */
746 outbuf
[5] = 0xe0; /* unmap & write_same 10/16 all supported */
747 outbuf
[6] = s
->qdev
.conf
.discard_granularity
? 2 : 1;
755 assert(buflen
- start
<= 255);
756 outbuf
[start
- 1] = buflen
- start
;
760 static int scsi_disk_emulate_inquiry(SCSIRequest
*req
, uint8_t *outbuf
)
762 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
765 if (req
->cmd
.buf
[1] & 0x1) {
766 /* Vital product data */
767 return scsi_disk_emulate_vpd_page(req
, outbuf
);
770 /* Standard INQUIRY data */
771 if (req
->cmd
.buf
[2] != 0) {
776 buflen
= req
->cmd
.xfer
;
777 if (buflen
> SCSI_MAX_INQUIRY_LEN
) {
778 buflen
= SCSI_MAX_INQUIRY_LEN
;
781 outbuf
[0] = s
->qdev
.type
& 0x1f;
782 outbuf
[1] = (s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) ? 0x80 : 0;
784 strpadcpy((char *) &outbuf
[16], 16, s
->product
, ' ');
785 strpadcpy((char *) &outbuf
[8], 8, s
->vendor
, ' ');
787 memset(&outbuf
[32], 0, 4);
788 memcpy(&outbuf
[32], s
->version
, MIN(4, strlen(s
->version
)));
790 * We claim conformance to SPC-3, which is required for guests
791 * to ask for modern features like READ CAPACITY(16) or the
792 * block characteristics VPD page by default. Not all of SPC-3
793 * is actually implemented, but we're good enough.
795 outbuf
[2] = s
->qdev
.default_scsi_version
;
796 outbuf
[3] = 2 | 0x10; /* Format 2, HiSup */
799 outbuf
[4] = buflen
- 5; /* Additional Length = (Len - 1) - 4 */
801 /* If the allocation length of CDB is too small,
802 the additional length is not adjusted */
806 /* Sync data transfer and TCQ. */
807 outbuf
[7] = 0x10 | (req
->bus
->info
->tcq
? 0x02 : 0);
811 static inline bool media_is_dvd(SCSIDiskState
*s
)
814 if (s
->qdev
.type
!= TYPE_ROM
) {
817 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
820 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
821 return nb_sectors
> CD_MAX_SECTORS
;
824 static inline bool media_is_cd(SCSIDiskState
*s
)
827 if (s
->qdev
.type
!= TYPE_ROM
) {
830 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
833 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
834 return nb_sectors
<= CD_MAX_SECTORS
;
837 static int scsi_read_disc_information(SCSIDiskState
*s
, SCSIDiskReq
*r
,
840 uint8_t type
= r
->req
.cmd
.buf
[1] & 7;
842 if (s
->qdev
.type
!= TYPE_ROM
) {
846 /* Types 1/2 are only defined for Blu-Ray. */
848 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
852 memset(outbuf
, 0, 34);
854 outbuf
[2] = 0xe; /* last session complete, disc finalized */
855 outbuf
[3] = 1; /* first track on disc */
856 outbuf
[4] = 1; /* # of sessions */
857 outbuf
[5] = 1; /* first track of last session */
858 outbuf
[6] = 1; /* last track of last session */
859 outbuf
[7] = 0x20; /* unrestricted use */
860 outbuf
[8] = 0x00; /* CD-ROM or DVD-ROM */
861 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
862 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
863 /* 24-31: disc bar code */
864 /* 32: disc application code */
865 /* 33: number of OPC tables */
870 static int scsi_read_dvd_structure(SCSIDiskState
*s
, SCSIDiskReq
*r
,
873 static const int rds_caps_size
[5] = {
880 uint8_t media
= r
->req
.cmd
.buf
[1];
881 uint8_t layer
= r
->req
.cmd
.buf
[6];
882 uint8_t format
= r
->req
.cmd
.buf
[7];
885 if (s
->qdev
.type
!= TYPE_ROM
) {
889 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
893 if (format
!= 0xff) {
894 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
895 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
898 if (media_is_cd(s
)) {
899 scsi_check_condition(r
, SENSE_CODE(INCOMPATIBLE_FORMAT
));
902 if (format
>= ARRAY_SIZE(rds_caps_size
)) {
905 size
= rds_caps_size
[format
];
906 memset(outbuf
, 0, size
);
911 /* Physical format information */
916 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
918 outbuf
[4] = 1; /* DVD-ROM, part version 1 */
919 outbuf
[5] = 0xf; /* 120mm disc, minimum rate unspecified */
920 outbuf
[6] = 1; /* one layer, read-only (per MMC-2 spec) */
921 outbuf
[7] = 0; /* default densities */
923 stl_be_p(&outbuf
[12], (nb_sectors
>> 2) - 1); /* end sector */
924 stl_be_p(&outbuf
[16], (nb_sectors
>> 2) - 1); /* l0 end sector */
928 case 0x01: /* DVD copyright information, all zeros */
931 case 0x03: /* BCA information - invalid field for no BCA info */
934 case 0x04: /* DVD disc manufacturing information, all zeros */
937 case 0xff: { /* List capabilities */
940 for (i
= 0; i
< ARRAY_SIZE(rds_caps_size
); i
++) {
941 if (!rds_caps_size
[i
]) {
945 outbuf
[size
+ 1] = 0x40; /* Not writable, readable */
946 stw_be_p(&outbuf
[size
+ 2], rds_caps_size
[i
]);
956 /* Size of buffer, not including 2 byte size field */
957 stw_be_p(outbuf
, size
- 2);
964 static int scsi_event_status_media(SCSIDiskState
*s
, uint8_t *outbuf
)
966 uint8_t event_code
, media_status
;
970 media_status
= MS_TRAY_OPEN
;
971 } else if (blk_is_inserted(s
->qdev
.conf
.blk
)) {
972 media_status
= MS_MEDIA_PRESENT
;
975 /* Event notification descriptor */
976 event_code
= MEC_NO_CHANGE
;
977 if (media_status
!= MS_TRAY_OPEN
) {
978 if (s
->media_event
) {
979 event_code
= MEC_NEW_MEDIA
;
980 s
->media_event
= false;
981 } else if (s
->eject_request
) {
982 event_code
= MEC_EJECT_REQUESTED
;
983 s
->eject_request
= false;
987 outbuf
[0] = event_code
;
988 outbuf
[1] = media_status
;
990 /* These fields are reserved, just clear them. */
996 static int scsi_get_event_status_notification(SCSIDiskState
*s
, SCSIDiskReq
*r
,
1000 uint8_t *buf
= r
->req
.cmd
.buf
;
1001 uint8_t notification_class_request
= buf
[4];
1002 if (s
->qdev
.type
!= TYPE_ROM
) {
1005 if ((buf
[1] & 1) == 0) {
1011 outbuf
[0] = outbuf
[1] = 0;
1012 outbuf
[3] = 1 << GESN_MEDIA
; /* supported events */
1013 if (notification_class_request
& (1 << GESN_MEDIA
)) {
1014 outbuf
[2] = GESN_MEDIA
;
1015 size
+= scsi_event_status_media(s
, &outbuf
[size
]);
1019 stw_be_p(outbuf
, size
- 4);
1023 static int scsi_get_configuration(SCSIDiskState
*s
, uint8_t *outbuf
)
1027 if (s
->qdev
.type
!= TYPE_ROM
) {
1031 if (media_is_dvd(s
)) {
1032 current
= MMC_PROFILE_DVD_ROM
;
1033 } else if (media_is_cd(s
)) {
1034 current
= MMC_PROFILE_CD_ROM
;
1036 current
= MMC_PROFILE_NONE
;
1039 memset(outbuf
, 0, 40);
1040 stl_be_p(&outbuf
[0], 36); /* Bytes after the data length field */
1041 stw_be_p(&outbuf
[6], current
);
1042 /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
1043 outbuf
[10] = 0x03; /* persistent, current */
1044 outbuf
[11] = 8; /* two profiles */
1045 stw_be_p(&outbuf
[12], MMC_PROFILE_DVD_ROM
);
1046 outbuf
[14] = (current
== MMC_PROFILE_DVD_ROM
);
1047 stw_be_p(&outbuf
[16], MMC_PROFILE_CD_ROM
);
1048 outbuf
[18] = (current
== MMC_PROFILE_CD_ROM
);
1049 /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
1050 stw_be_p(&outbuf
[20], 1);
1051 outbuf
[22] = 0x08 | 0x03; /* version 2, persistent, current */
1053 stl_be_p(&outbuf
[24], 1); /* SCSI */
1054 outbuf
[28] = 1; /* DBE = 1, mandatory */
1055 /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
1056 stw_be_p(&outbuf
[32], 3);
1057 outbuf
[34] = 0x08 | 0x03; /* version 2, persistent, current */
1059 outbuf
[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
1060 /* TODO: Random readable, CD read, DVD read, drive serial number,
1065 static int scsi_emulate_mechanism_status(SCSIDiskState
*s
, uint8_t *outbuf
)
1067 if (s
->qdev
.type
!= TYPE_ROM
) {
1070 memset(outbuf
, 0, 8);
1071 outbuf
[5] = 1; /* CD-ROM */
1075 static int mode_sense_page(SCSIDiskState
*s
, int page
, uint8_t **p_outbuf
,
1078 static const int mode_sense_valid
[0x3f] = {
1079 [MODE_PAGE_HD_GEOMETRY
] = (1 << TYPE_DISK
),
1080 [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
] = (1 << TYPE_DISK
),
1081 [MODE_PAGE_CACHING
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1082 [MODE_PAGE_R_W_ERROR
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1083 [MODE_PAGE_AUDIO_CTL
] = (1 << TYPE_ROM
),
1084 [MODE_PAGE_CAPABILITIES
] = (1 << TYPE_ROM
),
1087 uint8_t *p
= *p_outbuf
+ 2;
1090 if ((mode_sense_valid
[page
] & (1 << s
->qdev
.type
)) == 0) {
1095 * If Changeable Values are requested, a mask denoting those mode parameters
1096 * that are changeable shall be returned. As we currently don't support
1097 * parameter changes via MODE_SELECT all bits are returned set to zero.
1098 * The buffer was already menset to zero by the caller of this function.
1100 * The offsets here are off by two compared to the descriptions in the
1101 * SCSI specs, because those include a 2-byte header. This is unfortunate,
1102 * but it is done so that offsets are consistent within our implementation
1103 * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
1104 * 2-byte and 4-byte headers.
1107 case MODE_PAGE_HD_GEOMETRY
:
1109 if (page_control
== 1) { /* Changeable Values */
1112 /* if a geometry hint is available, use it */
1113 p
[0] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1114 p
[1] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1115 p
[2] = s
->qdev
.conf
.cyls
& 0xff;
1116 p
[3] = s
->qdev
.conf
.heads
& 0xff;
1117 /* Write precomp start cylinder, disabled */
1118 p
[4] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1119 p
[5] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1120 p
[6] = s
->qdev
.conf
.cyls
& 0xff;
1121 /* Reduced current start cylinder, disabled */
1122 p
[7] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1123 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1124 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1125 /* Device step rate [ns], 200ns */
1128 /* Landing zone cylinder */
1132 /* Medium rotation rate [rpm], 5400 rpm */
1133 p
[18] = (5400 >> 8) & 0xff;
1134 p
[19] = 5400 & 0xff;
1137 case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
:
1139 if (page_control
== 1) { /* Changeable Values */
1142 /* Transfer rate [kbit/s], 5Mbit/s */
1145 /* if a geometry hint is available, use it */
1146 p
[2] = s
->qdev
.conf
.heads
& 0xff;
1147 p
[3] = s
->qdev
.conf
.secs
& 0xff;
1148 p
[4] = s
->qdev
.blocksize
>> 8;
1149 p
[6] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1150 p
[7] = s
->qdev
.conf
.cyls
& 0xff;
1151 /* Write precomp start cylinder, disabled */
1152 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1153 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1154 /* Reduced current start cylinder, disabled */
1155 p
[10] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1156 p
[11] = s
->qdev
.conf
.cyls
& 0xff;
1157 /* Device step rate [100us], 100us */
1160 /* Device step pulse width [us], 1us */
1162 /* Device head settle delay [100us], 100us */
1165 /* Motor on delay [0.1s], 0.1s */
1167 /* Motor off delay [0.1s], 0.1s */
1169 /* Medium rotation rate [rpm], 5400 rpm */
1170 p
[26] = (5400 >> 8) & 0xff;
1171 p
[27] = 5400 & 0xff;
1174 case MODE_PAGE_CACHING
:
1176 if (page_control
== 1 || /* Changeable Values */
1177 blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1182 case MODE_PAGE_R_W_ERROR
:
1184 if (page_control
== 1) { /* Changeable Values */
1187 p
[0] = 0x80; /* Automatic Write Reallocation Enabled */
1188 if (s
->qdev
.type
== TYPE_ROM
) {
1189 p
[1] = 0x20; /* Read Retry Count */
1193 case MODE_PAGE_AUDIO_CTL
:
1197 case MODE_PAGE_CAPABILITIES
:
1199 if (page_control
== 1) { /* Changeable Values */
1203 p
[0] = 0x3b; /* CD-R & CD-RW read */
1204 p
[1] = 0; /* Writing not supported */
1205 p
[2] = 0x7f; /* Audio, composite, digital out,
1206 mode 2 form 1&2, multi session */
1207 p
[3] = 0xff; /* CD DA, DA accurate, RW supported,
1208 RW corrected, C2 errors, ISRC,
1210 p
[4] = 0x2d | (s
->tray_locked
? 2 : 0);
1211 /* Locking supported, jumper present, eject, tray */
1212 p
[5] = 0; /* no volume & mute control, no
1214 p
[6] = (50 * 176) >> 8; /* 50x read speed */
1215 p
[7] = (50 * 176) & 0xff;
1216 p
[8] = 2 >> 8; /* Two volume levels */
1218 p
[10] = 2048 >> 8; /* 2M buffer */
1219 p
[11] = 2048 & 0xff;
1220 p
[12] = (16 * 176) >> 8; /* 16x read speed current */
1221 p
[13] = (16 * 176) & 0xff;
1222 p
[16] = (16 * 176) >> 8; /* 16x write speed */
1223 p
[17] = (16 * 176) & 0xff;
1224 p
[18] = (16 * 176) >> 8; /* 16x write speed current */
1225 p
[19] = (16 * 176) & 0xff;
1232 assert(length
< 256);
1233 (*p_outbuf
)[0] = page
;
1234 (*p_outbuf
)[1] = length
;
1235 *p_outbuf
+= length
+ 2;
1239 static int scsi_disk_emulate_mode_sense(SCSIDiskReq
*r
, uint8_t *outbuf
)
1241 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1242 uint64_t nb_sectors
;
1244 int page
, buflen
, ret
, page_control
;
1246 uint8_t dev_specific_param
;
1248 dbd
= (r
->req
.cmd
.buf
[1] & 0x8) != 0;
1249 page
= r
->req
.cmd
.buf
[2] & 0x3f;
1250 page_control
= (r
->req
.cmd
.buf
[2] & 0xc0) >> 6;
1252 trace_scsi_disk_emulate_mode_sense((r
->req
.cmd
.buf
[0] == MODE_SENSE
) ? 6 :
1253 10, page
, r
->req
.cmd
.xfer
, page_control
);
1254 memset(outbuf
, 0, r
->req
.cmd
.xfer
);
1257 if (s
->qdev
.type
== TYPE_DISK
) {
1258 dev_specific_param
= s
->features
& (1 << SCSI_DISK_F_DPOFUA
) ? 0x10 : 0;
1259 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
1260 dev_specific_param
|= 0x80; /* Readonly. */
1263 /* MMC prescribes that CD/DVD drives have no block descriptors,
1264 * and defines no device-specific parameter. */
1265 dev_specific_param
= 0x00;
1269 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1270 p
[1] = 0; /* Default media type. */
1271 p
[2] = dev_specific_param
;
1272 p
[3] = 0; /* Block descriptor length. */
1274 } else { /* MODE_SENSE_10 */
1275 p
[2] = 0; /* Default media type. */
1276 p
[3] = dev_specific_param
;
1277 p
[6] = p
[7] = 0; /* Block descriptor length. */
1281 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1282 if (!dbd
&& nb_sectors
) {
1283 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1284 outbuf
[3] = 8; /* Block descriptor length */
1285 } else { /* MODE_SENSE_10 */
1286 outbuf
[7] = 8; /* Block descriptor length */
1288 nb_sectors
/= (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1289 if (nb_sectors
> 0xffffff) {
1292 p
[0] = 0; /* media density code */
1293 p
[1] = (nb_sectors
>> 16) & 0xff;
1294 p
[2] = (nb_sectors
>> 8) & 0xff;
1295 p
[3] = nb_sectors
& 0xff;
1296 p
[4] = 0; /* reserved */
1297 p
[5] = 0; /* bytes 5-7 are the sector size in bytes */
1298 p
[6] = s
->qdev
.blocksize
>> 8;
1303 if (page_control
== 3) {
1305 scsi_check_condition(r
, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED
));
1310 for (page
= 0; page
<= 0x3e; page
++) {
1311 mode_sense_page(s
, page
, &p
, page_control
);
1314 ret
= mode_sense_page(s
, page
, &p
, page_control
);
1320 buflen
= p
- outbuf
;
1322 * The mode data length field specifies the length in bytes of the
1323 * following data that is available to be transferred. The mode data
1324 * length does not include itself.
1326 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1327 outbuf
[0] = buflen
- 1;
1328 } else { /* MODE_SENSE_10 */
1329 outbuf
[0] = ((buflen
- 2) >> 8) & 0xff;
1330 outbuf
[1] = (buflen
- 2) & 0xff;
1335 static int scsi_disk_emulate_read_toc(SCSIRequest
*req
, uint8_t *outbuf
)
1337 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1338 int start_track
, format
, msf
, toclen
;
1339 uint64_t nb_sectors
;
1341 msf
= req
->cmd
.buf
[1] & 2;
1342 format
= req
->cmd
.buf
[2] & 0xf;
1343 start_track
= req
->cmd
.buf
[6];
1344 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1345 trace_scsi_disk_emulate_read_toc(start_track
, format
, msf
>> 1);
1346 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
1349 toclen
= cdrom_read_toc(nb_sectors
, outbuf
, msf
, start_track
);
1352 /* multi session : only a single session defined */
1354 memset(outbuf
, 0, 12);
1360 toclen
= cdrom_read_toc_raw(nb_sectors
, outbuf
, msf
, start_track
);
1368 static int scsi_disk_emulate_start_stop(SCSIDiskReq
*r
)
1370 SCSIRequest
*req
= &r
->req
;
1371 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1372 bool start
= req
->cmd
.buf
[4] & 1;
1373 bool loej
= req
->cmd
.buf
[4] & 2; /* load on start, eject on !start */
1374 int pwrcnd
= req
->cmd
.buf
[4] & 0xf0;
1377 /* eject/load only happens for power condition == 0 */
1381 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) && loej
) {
1382 if (!start
&& !s
->tray_open
&& s
->tray_locked
) {
1383 scsi_check_condition(r
,
1384 blk_is_inserted(s
->qdev
.conf
.blk
)
1385 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED
)
1386 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED
));
1390 if (s
->tray_open
!= !start
) {
1391 blk_eject(s
->qdev
.conf
.blk
, !start
);
1392 s
->tray_open
= !start
;
1398 static void scsi_disk_emulate_read_data(SCSIRequest
*req
)
1400 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1401 int buflen
= r
->iov
.iov_len
;
1404 trace_scsi_disk_emulate_read_data(buflen
);
1407 scsi_req_data(&r
->req
, buflen
);
1411 /* This also clears the sense buffer for REQUEST SENSE. */
1412 scsi_req_complete(&r
->req
, GOOD
);
1415 static int scsi_disk_check_mode_select(SCSIDiskState
*s
, int page
,
1416 uint8_t *inbuf
, int inlen
)
1418 uint8_t mode_current
[SCSI_MAX_MODE_LEN
];
1419 uint8_t mode_changeable
[SCSI_MAX_MODE_LEN
];
1421 int len
, expected_len
, changeable_len
, i
;
1423 /* The input buffer does not include the page header, so it is
1426 expected_len
= inlen
+ 2;
1427 if (expected_len
> SCSI_MAX_MODE_LEN
) {
1432 memset(mode_current
, 0, inlen
+ 2);
1433 len
= mode_sense_page(s
, page
, &p
, 0);
1434 if (len
< 0 || len
!= expected_len
) {
1438 p
= mode_changeable
;
1439 memset(mode_changeable
, 0, inlen
+ 2);
1440 changeable_len
= mode_sense_page(s
, page
, &p
, 1);
1441 assert(changeable_len
== len
);
1443 /* Check that unchangeable bits are the same as what MODE SENSE
1446 for (i
= 2; i
< len
; i
++) {
1447 if (((mode_current
[i
] ^ inbuf
[i
- 2]) & ~mode_changeable
[i
]) != 0) {
1454 static void scsi_disk_apply_mode_select(SCSIDiskState
*s
, int page
, uint8_t *p
)
1457 case MODE_PAGE_CACHING
:
1458 blk_set_enable_write_cache(s
->qdev
.conf
.blk
, (p
[0] & 4) != 0);
1466 static int mode_select_pages(SCSIDiskReq
*r
, uint8_t *p
, int len
, bool change
)
1468 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1471 int page
, subpage
, page_len
;
1473 /* Parse both possible formats for the mode page headers. */
1477 goto invalid_param_len
;
1480 page_len
= lduw_be_p(&p
[2]);
1485 goto invalid_param_len
;
1496 if (page_len
> len
) {
1497 goto invalid_param_len
;
1501 if (scsi_disk_check_mode_select(s
, page
, p
, page_len
) < 0) {
1505 scsi_disk_apply_mode_select(s
, page
, p
);
1514 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1518 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1522 static void scsi_disk_emulate_mode_select(SCSIDiskReq
*r
, uint8_t *inbuf
)
1524 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1526 int cmd
= r
->req
.cmd
.buf
[0];
1527 int len
= r
->req
.cmd
.xfer
;
1528 int hdr_len
= (cmd
== MODE_SELECT
? 4 : 8);
1532 /* We only support PF=1, SP=0. */
1533 if ((r
->req
.cmd
.buf
[1] & 0x11) != 0x10) {
1537 if (len
< hdr_len
) {
1538 goto invalid_param_len
;
1541 bd_len
= (cmd
== MODE_SELECT
? p
[3] : lduw_be_p(&p
[6]));
1545 goto invalid_param_len
;
1547 if (bd_len
!= 0 && bd_len
!= 8) {
1554 /* Ensure no change is made if there is an error! */
1555 for (pass
= 0; pass
< 2; pass
++) {
1556 if (mode_select_pages(r
, p
, len
, pass
== 1) < 0) {
1561 if (!blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1562 /* The request is used as the AIO opaque value, so add a ref. */
1563 scsi_req_ref(&r
->req
);
1564 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
1566 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
1570 scsi_req_complete(&r
->req
, GOOD
);
1574 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1578 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1582 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1585 static inline bool check_lba_range(SCSIDiskState
*s
,
1586 uint64_t sector_num
, uint32_t nb_sectors
)
1589 * The first line tests that no overflow happens when computing the last
1590 * sector. The second line tests that the last accessed sector is in
1593 * Careful, the computations should not underflow for nb_sectors == 0,
1594 * and a 0-block read to the first LBA beyond the end of device is
1597 return (sector_num
<= sector_num
+ nb_sectors
&&
1598 sector_num
+ nb_sectors
<= s
->qdev
.max_lba
+ 1);
1601 typedef struct UnmapCBData
{
1607 static void scsi_unmap_complete(void *opaque
, int ret
);
1609 static void scsi_unmap_complete_noio(UnmapCBData
*data
, int ret
)
1611 SCSIDiskReq
*r
= data
->r
;
1612 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1614 assert(r
->req
.aiocb
== NULL
);
1616 if (data
->count
> 0) {
1617 r
->sector
= ldq_be_p(&data
->inbuf
[0])
1618 * (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1619 r
->sector_count
= (ldl_be_p(&data
->inbuf
[8]) & 0xffffffffULL
)
1620 * (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1621 if (!check_lba_range(s
, r
->sector
, r
->sector_count
)) {
1622 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
),
1624 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1628 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1629 r
->sector_count
* BDRV_SECTOR_SIZE
,
1632 r
->req
.aiocb
= blk_aio_pdiscard(s
->qdev
.conf
.blk
,
1633 r
->sector
* BDRV_SECTOR_SIZE
,
1634 r
->sector_count
* BDRV_SECTOR_SIZE
,
1635 scsi_unmap_complete
, data
);
1641 scsi_req_complete(&r
->req
, GOOD
);
1644 scsi_req_unref(&r
->req
);
1648 static void scsi_unmap_complete(void *opaque
, int ret
)
1650 UnmapCBData
*data
= opaque
;
1651 SCSIDiskReq
*r
= data
->r
;
1652 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1654 assert(r
->req
.aiocb
!= NULL
);
1655 r
->req
.aiocb
= NULL
;
1657 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1658 if (scsi_disk_req_check_error(r
, ret
, true)) {
1659 scsi_req_unref(&r
->req
);
1662 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1663 scsi_unmap_complete_noio(data
, ret
);
1665 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1668 static void scsi_disk_emulate_unmap(SCSIDiskReq
*r
, uint8_t *inbuf
)
1670 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1672 int len
= r
->req
.cmd
.xfer
;
1675 /* Reject ANCHOR=1. */
1676 if (r
->req
.cmd
.buf
[1] & 0x1) {
1681 goto invalid_param_len
;
1683 if (len
< lduw_be_p(&p
[0]) + 2) {
1684 goto invalid_param_len
;
1686 if (len
< lduw_be_p(&p
[2]) + 8) {
1687 goto invalid_param_len
;
1689 if (lduw_be_p(&p
[2]) & 15) {
1690 goto invalid_param_len
;
1693 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
1694 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1695 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1699 data
= g_new0(UnmapCBData
, 1);
1701 data
->inbuf
= &p
[8];
1702 data
->count
= lduw_be_p(&p
[2]) >> 4;
1704 /* The matching unref is in scsi_unmap_complete, before data is freed. */
1705 scsi_req_ref(&r
->req
);
1706 scsi_unmap_complete_noio(data
, 0);
1710 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1711 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1715 block_acct_invalid(blk_get_stats(s
->qdev
.conf
.blk
), BLOCK_ACCT_UNMAP
);
1716 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1719 typedef struct WriteSameCBData
{
1727 static void scsi_write_same_complete(void *opaque
, int ret
)
1729 WriteSameCBData
*data
= opaque
;
1730 SCSIDiskReq
*r
= data
->r
;
1731 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1733 assert(r
->req
.aiocb
!= NULL
);
1734 r
->req
.aiocb
= NULL
;
1735 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1736 if (scsi_disk_req_check_error(r
, ret
, true)) {
1740 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1742 data
->nb_sectors
-= data
->iov
.iov_len
/ BDRV_SECTOR_SIZE
;
1743 data
->sector
+= data
->iov
.iov_len
/ BDRV_SECTOR_SIZE
;
1744 data
->iov
.iov_len
= MIN(data
->nb_sectors
* BDRV_SECTOR_SIZE
,
1746 if (data
->iov
.iov_len
) {
1747 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1748 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1749 /* Reinitialize qiov, to handle unaligned WRITE SAME request
1750 * where final qiov may need smaller size */
1751 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1752 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1753 data
->sector
<< BDRV_SECTOR_BITS
,
1755 scsi_write_same_complete
, data
);
1756 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1760 scsi_req_complete(&r
->req
, GOOD
);
1763 scsi_req_unref(&r
->req
);
1764 qemu_vfree(data
->iov
.iov_base
);
1766 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1769 static void scsi_disk_emulate_write_same(SCSIDiskReq
*r
, uint8_t *inbuf
)
1771 SCSIRequest
*req
= &r
->req
;
1772 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1773 uint32_t nb_sectors
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
1774 WriteSameCBData
*data
;
1778 /* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */
1779 if (nb_sectors
== 0 || (req
->cmd
.buf
[1] & 0x16)) {
1780 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1784 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
1785 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1788 if (!check_lba_range(s
, r
->req
.cmd
.lba
, nb_sectors
)) {
1789 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1793 if ((req
->cmd
.buf
[1] & 0x1) || buffer_is_zero(inbuf
, s
->qdev
.blocksize
)) {
1794 int flags
= (req
->cmd
.buf
[1] & 0x8) ? BDRV_REQ_MAY_UNMAP
: 0;
1796 /* The request is used as the AIO opaque value, so add a ref. */
1797 scsi_req_ref(&r
->req
);
1798 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1799 nb_sectors
* s
->qdev
.blocksize
,
1801 r
->req
.aiocb
= blk_aio_pwrite_zeroes(s
->qdev
.conf
.blk
,
1802 r
->req
.cmd
.lba
* s
->qdev
.blocksize
,
1803 nb_sectors
* s
->qdev
.blocksize
,
1804 flags
, scsi_aio_complete
, r
);
1808 data
= g_new0(WriteSameCBData
, 1);
1810 data
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1811 data
->nb_sectors
= nb_sectors
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
1812 data
->iov
.iov_len
= MIN(data
->nb_sectors
* BDRV_SECTOR_SIZE
,
1813 SCSI_WRITE_SAME_MAX
);
1814 data
->iov
.iov_base
= buf
= blk_blockalign(s
->qdev
.conf
.blk
,
1816 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1818 for (i
= 0; i
< data
->iov
.iov_len
; i
+= s
->qdev
.blocksize
) {
1819 memcpy(&buf
[i
], inbuf
, s
->qdev
.blocksize
);
1822 scsi_req_ref(&r
->req
);
1823 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1824 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1825 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1826 data
->sector
<< BDRV_SECTOR_BITS
,
1828 scsi_write_same_complete
, data
);
1831 static void scsi_disk_emulate_write_data(SCSIRequest
*req
)
1833 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1835 if (r
->iov
.iov_len
) {
1836 int buflen
= r
->iov
.iov_len
;
1837 trace_scsi_disk_emulate_write_data(buflen
);
1839 scsi_req_data(&r
->req
, buflen
);
1843 switch (req
->cmd
.buf
[0]) {
1845 case MODE_SELECT_10
:
1846 /* This also clears the sense buffer for REQUEST SENSE. */
1847 scsi_disk_emulate_mode_select(r
, r
->iov
.iov_base
);
1851 scsi_disk_emulate_unmap(r
, r
->iov
.iov_base
);
1857 if (r
->req
.status
== -1) {
1858 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1864 scsi_disk_emulate_write_same(r
, r
->iov
.iov_base
);
1872 static int32_t scsi_disk_emulate_command(SCSIRequest
*req
, uint8_t *buf
)
1874 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1875 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1876 uint64_t nb_sectors
;
1880 switch (req
->cmd
.buf
[0]) {
1889 case ALLOW_MEDIUM_REMOVAL
:
1890 case GET_CONFIGURATION
:
1891 case GET_EVENT_STATUS_NOTIFICATION
:
1892 case MECHANISM_STATUS
:
1897 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
1898 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
1905 * FIXME: we shouldn't return anything bigger than 4k, but the code
1906 * requires the buffer to be as big as req->cmd.xfer in several
1907 * places. So, do not allow CDBs with a very large ALLOCATION
1908 * LENGTH. The real fix would be to modify scsi_read_data and
1909 * dma_buf_read, so that they return data beyond the buflen
1912 if (req
->cmd
.xfer
> 65536) {
1913 goto illegal_request
;
1915 r
->buflen
= MAX(4096, req
->cmd
.xfer
);
1917 if (!r
->iov
.iov_base
) {
1918 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
1921 outbuf
= r
->iov
.iov_base
;
1922 memset(outbuf
, 0, r
->buflen
);
1923 switch (req
->cmd
.buf
[0]) {
1924 case TEST_UNIT_READY
:
1925 assert(blk_is_available(s
->qdev
.conf
.blk
));
1928 buflen
= scsi_disk_emulate_inquiry(req
, outbuf
);
1930 goto illegal_request
;
1935 buflen
= scsi_disk_emulate_mode_sense(r
, outbuf
);
1937 goto illegal_request
;
1941 buflen
= scsi_disk_emulate_read_toc(req
, outbuf
);
1943 goto illegal_request
;
1947 if (req
->cmd
.buf
[1] & 1) {
1948 goto illegal_request
;
1952 if (req
->cmd
.buf
[1] & 3) {
1953 goto illegal_request
;
1957 if (req
->cmd
.buf
[1] & 1) {
1958 goto illegal_request
;
1962 if (req
->cmd
.buf
[1] & 3) {
1963 goto illegal_request
;
1967 if (scsi_disk_emulate_start_stop(r
) < 0) {
1971 case ALLOW_MEDIUM_REMOVAL
:
1972 s
->tray_locked
= req
->cmd
.buf
[4] & 1;
1973 blk_lock_medium(s
->qdev
.conf
.blk
, req
->cmd
.buf
[4] & 1);
1975 case READ_CAPACITY_10
:
1976 /* The normal LEN field for this command is zero. */
1977 memset(outbuf
, 0, 8);
1978 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1980 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
1983 if ((req
->cmd
.buf
[8] & 1) == 0 && req
->cmd
.lba
) {
1984 goto illegal_request
;
1986 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
1987 /* Returned value is the address of the last sector. */
1989 /* Remember the new size for read/write sanity checking. */
1990 s
->qdev
.max_lba
= nb_sectors
;
1991 /* Clip to 2TB, instead of returning capacity modulo 2TB. */
1992 if (nb_sectors
> UINT32_MAX
) {
1993 nb_sectors
= UINT32_MAX
;
1995 outbuf
[0] = (nb_sectors
>> 24) & 0xff;
1996 outbuf
[1] = (nb_sectors
>> 16) & 0xff;
1997 outbuf
[2] = (nb_sectors
>> 8) & 0xff;
1998 outbuf
[3] = nb_sectors
& 0xff;
2001 outbuf
[6] = s
->qdev
.blocksize
>> 8;
2005 /* Just return "NO SENSE". */
2006 buflen
= scsi_convert_sense(NULL
, 0, outbuf
, r
->buflen
,
2007 (req
->cmd
.buf
[1] & 1) == 0);
2009 goto illegal_request
;
2012 case MECHANISM_STATUS
:
2013 buflen
= scsi_emulate_mechanism_status(s
, outbuf
);
2015 goto illegal_request
;
2018 case GET_CONFIGURATION
:
2019 buflen
= scsi_get_configuration(s
, outbuf
);
2021 goto illegal_request
;
2024 case GET_EVENT_STATUS_NOTIFICATION
:
2025 buflen
= scsi_get_event_status_notification(s
, r
, outbuf
);
2027 goto illegal_request
;
2030 case READ_DISC_INFORMATION
:
2031 buflen
= scsi_read_disc_information(s
, r
, outbuf
);
2033 goto illegal_request
;
2036 case READ_DVD_STRUCTURE
:
2037 buflen
= scsi_read_dvd_structure(s
, r
, outbuf
);
2039 goto illegal_request
;
2042 case SERVICE_ACTION_IN_16
:
2043 /* Service Action In subcommands. */
2044 if ((req
->cmd
.buf
[1] & 31) == SAI_READ_CAPACITY_16
) {
2045 trace_scsi_disk_emulate_command_SAI_16();
2046 memset(outbuf
, 0, req
->cmd
.xfer
);
2047 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2049 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
2052 if ((req
->cmd
.buf
[14] & 1) == 0 && req
->cmd
.lba
) {
2053 goto illegal_request
;
2055 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
2056 /* Returned value is the address of the last sector. */
2058 /* Remember the new size for read/write sanity checking. */
2059 s
->qdev
.max_lba
= nb_sectors
;
2060 outbuf
[0] = (nb_sectors
>> 56) & 0xff;
2061 outbuf
[1] = (nb_sectors
>> 48) & 0xff;
2062 outbuf
[2] = (nb_sectors
>> 40) & 0xff;
2063 outbuf
[3] = (nb_sectors
>> 32) & 0xff;
2064 outbuf
[4] = (nb_sectors
>> 24) & 0xff;
2065 outbuf
[5] = (nb_sectors
>> 16) & 0xff;
2066 outbuf
[6] = (nb_sectors
>> 8) & 0xff;
2067 outbuf
[7] = nb_sectors
& 0xff;
2070 outbuf
[10] = s
->qdev
.blocksize
>> 8;
2073 outbuf
[13] = get_physical_block_exp(&s
->qdev
.conf
);
2075 /* set TPE bit if the format supports discard */
2076 if (s
->qdev
.conf
.discard_granularity
) {
2080 /* Protection, exponent and lowest lba field left blank. */
2083 trace_scsi_disk_emulate_command_SAI_unsupported();
2084 goto illegal_request
;
2085 case SYNCHRONIZE_CACHE
:
2086 /* The request is used as the AIO opaque value, so add a ref. */
2087 scsi_req_ref(&r
->req
);
2088 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
2090 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
2093 trace_scsi_disk_emulate_command_SEEK_10(r
->req
.cmd
.lba
);
2094 if (r
->req
.cmd
.lba
> s
->qdev
.max_lba
) {
2099 trace_scsi_disk_emulate_command_MODE_SELECT(r
->req
.cmd
.xfer
);
2101 case MODE_SELECT_10
:
2102 trace_scsi_disk_emulate_command_MODE_SELECT_10(r
->req
.cmd
.xfer
);
2105 trace_scsi_disk_emulate_command_UNMAP(r
->req
.cmd
.xfer
);
2110 trace_scsi_disk_emulate_command_VERIFY((req
->cmd
.buf
[1] >> 1) & 3);
2111 if (req
->cmd
.buf
[1] & 6) {
2112 goto illegal_request
;
2117 trace_scsi_disk_emulate_command_WRITE_SAME(
2118 req
->cmd
.buf
[0] == WRITE_SAME_10
? 10 : 16, r
->req
.cmd
.xfer
);
2121 trace_scsi_disk_emulate_command_UNKNOWN(buf
[0],
2122 scsi_command_name(buf
[0]));
2123 scsi_check_condition(r
, SENSE_CODE(INVALID_OPCODE
));
2126 assert(!r
->req
.aiocb
);
2127 r
->iov
.iov_len
= MIN(r
->buflen
, req
->cmd
.xfer
);
2128 if (r
->iov
.iov_len
== 0) {
2129 scsi_req_complete(&r
->req
, GOOD
);
2131 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2132 assert(r
->iov
.iov_len
== req
->cmd
.xfer
);
2133 return -r
->iov
.iov_len
;
2135 return r
->iov
.iov_len
;
2139 if (r
->req
.status
== -1) {
2140 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2145 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2149 /* Execute a scsi command. Returns the length of the data expected by the
2150 command. This will be Positive for data transfers from the device
2151 (eg. disk reads), negative for transfers to the device (eg. disk writes),
2152 and zero if the command does not transfer any data. */
2154 static int32_t scsi_disk_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2156 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2157 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2158 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
2164 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
2165 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
2169 len
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
2175 trace_scsi_disk_dma_command_READ(r
->req
.cmd
.lba
, len
);
2176 /* Protection information is not supported. For SCSI versions 2 and
2177 * older (as determined by snooping the guest's INQUIRY commands),
2178 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2180 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2181 goto illegal_request
;
2183 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2186 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2187 r
->sector_count
= len
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2193 case WRITE_VERIFY_10
:
2194 case WRITE_VERIFY_12
:
2195 case WRITE_VERIFY_16
:
2196 if (!blk_is_writable(s
->qdev
.conf
.blk
)) {
2197 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
2200 trace_scsi_disk_dma_command_WRITE(
2201 (command
& 0xe) == 0xe ? "And Verify " : "",
2202 r
->req
.cmd
.lba
, len
);
2207 /* We get here only for BYTCHK == 0x01 and only for scsi-block.
2208 * As far as DMA is concerned, we can treat it the same as a write;
2209 * scsi_block_do_sgio will send VERIFY commands.
2211 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2212 goto illegal_request
;
2214 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2217 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2218 r
->sector_count
= len
* (s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
);
2223 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2226 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2229 r
->need_fua_emulation
= sdc
->need_fua_emulation(&r
->req
.cmd
);
2230 if (r
->sector_count
== 0) {
2231 scsi_req_complete(&r
->req
, GOOD
);
2233 assert(r
->iov
.iov_len
== 0);
2234 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2235 return -r
->sector_count
* BDRV_SECTOR_SIZE
;
2237 return r
->sector_count
* BDRV_SECTOR_SIZE
;
2241 static void scsi_disk_reset(DeviceState
*dev
)
2243 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
.qdev
, dev
);
2244 uint64_t nb_sectors
;
2246 scsi_device_purge_requests(&s
->qdev
, SENSE_CODE(RESET
));
2248 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2249 nb_sectors
/= s
->qdev
.blocksize
/ BDRV_SECTOR_SIZE
;
2253 s
->qdev
.max_lba
= nb_sectors
;
2254 /* reset tray statuses */
2258 s
->qdev
.scsi_version
= s
->qdev
.default_scsi_version
;
2261 static void scsi_disk_resize_cb(void *opaque
)
2263 SCSIDiskState
*s
= opaque
;
2265 /* SPC lists this sense code as available only for
2266 * direct-access devices.
2268 if (s
->qdev
.type
== TYPE_DISK
) {
2269 scsi_device_report_change(&s
->qdev
, SENSE_CODE(CAPACITY_CHANGED
));
2273 static void scsi_cd_change_media_cb(void *opaque
, bool load
, Error
**errp
)
2275 SCSIDiskState
*s
= opaque
;
2278 * When a CD gets changed, we have to report an ejected state and
2279 * then a loaded state to guests so that they detect tray
2280 * open/close and media change events. Guests that do not use
2281 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
2282 * states rely on this behavior.
2284 * media_changed governs the state machine used for unit attention
2285 * report. media_event is used by GET EVENT STATUS NOTIFICATION.
2287 s
->media_changed
= load
;
2288 s
->tray_open
= !load
;
2289 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM
));
2290 s
->media_event
= true;
2291 s
->eject_request
= false;
2294 static void scsi_cd_eject_request_cb(void *opaque
, bool force
)
2296 SCSIDiskState
*s
= opaque
;
2298 s
->eject_request
= true;
2300 s
->tray_locked
= false;
2304 static bool scsi_cd_is_tray_open(void *opaque
)
2306 return ((SCSIDiskState
*)opaque
)->tray_open
;
2309 static bool scsi_cd_is_medium_locked(void *opaque
)
2311 return ((SCSIDiskState
*)opaque
)->tray_locked
;
2314 static const BlockDevOps scsi_disk_removable_block_ops
= {
2315 .change_media_cb
= scsi_cd_change_media_cb
,
2316 .eject_request_cb
= scsi_cd_eject_request_cb
,
2317 .is_tray_open
= scsi_cd_is_tray_open
,
2318 .is_medium_locked
= scsi_cd_is_medium_locked
,
2320 .resize_cb
= scsi_disk_resize_cb
,
2323 static const BlockDevOps scsi_disk_block_ops
= {
2324 .resize_cb
= scsi_disk_resize_cb
,
2327 static void scsi_disk_unit_attention_reported(SCSIDevice
*dev
)
2329 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2330 if (s
->media_changed
) {
2331 s
->media_changed
= false;
2332 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(MEDIUM_CHANGED
));
2336 static void scsi_realize(SCSIDevice
*dev
, Error
**errp
)
2338 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2341 if (!s
->qdev
.conf
.blk
) {
2342 error_setg(errp
, "drive property not set");
2346 if (!(s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2347 !blk_is_inserted(s
->qdev
.conf
.blk
)) {
2348 error_setg(errp
, "Device needs media, but drive is empty");
2352 if (!blkconf_blocksizes(&s
->qdev
.conf
, errp
)) {
2356 if (blk_get_aio_context(s
->qdev
.conf
.blk
) != qemu_get_aio_context() &&
2357 !s
->qdev
.hba_supports_iothread
)
2359 error_setg(errp
, "HBA does not support iothreads");
2363 if (dev
->type
== TYPE_DISK
) {
2364 if (!blkconf_geometry(&dev
->conf
, NULL
, 65535, 255, 255, errp
)) {
2369 read_only
= !blk_supports_write_perm(s
->qdev
.conf
.blk
);
2370 if (dev
->type
== TYPE_ROM
) {
2374 if (!blkconf_apply_backend_options(&dev
->conf
, read_only
,
2375 dev
->type
== TYPE_DISK
, errp
)) {
2379 if (s
->qdev
.conf
.discard_granularity
== -1) {
2380 s
->qdev
.conf
.discard_granularity
=
2381 MAX(s
->qdev
.conf
.logical_block_size
, DEFAULT_DISCARD_GRANULARITY
);
2385 s
->version
= g_strdup(qemu_hw_version());
2388 s
->vendor
= g_strdup("QEMU");
2390 if (!s
->device_id
) {
2392 s
->device_id
= g_strdup_printf("%.20s", s
->serial
);
2394 const char *str
= blk_name(s
->qdev
.conf
.blk
);
2396 s
->device_id
= g_strdup(str
);
2401 if (blk_is_sg(s
->qdev
.conf
.blk
)) {
2402 error_setg(errp
, "unwanted /dev/sg*");
2406 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2407 !(s
->features
& (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
))) {
2408 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_removable_block_ops
, s
);
2410 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_block_ops
, s
);
2412 blk_set_guest_block_size(s
->qdev
.conf
.blk
, s
->qdev
.blocksize
);
2414 blk_iostatus_enable(s
->qdev
.conf
.blk
);
2416 add_boot_device_lchs(&dev
->qdev
, NULL
,
2422 static void scsi_unrealize(SCSIDevice
*dev
)
2424 del_boot_device_lchs(&dev
->qdev
, NULL
);
2427 static void scsi_hd_realize(SCSIDevice
*dev
, Error
**errp
)
2429 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2430 AioContext
*ctx
= NULL
;
2431 /* can happen for devices without drive. The error message for missing
2432 * backend will be issued in scsi_realize
2434 if (s
->qdev
.conf
.blk
) {
2435 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2436 aio_context_acquire(ctx
);
2437 if (!blkconf_blocksizes(&s
->qdev
.conf
, errp
)) {
2441 s
->qdev
.blocksize
= s
->qdev
.conf
.logical_block_size
;
2442 s
->qdev
.type
= TYPE_DISK
;
2444 s
->product
= g_strdup("QEMU HARDDISK");
2446 scsi_realize(&s
->qdev
, errp
);
2449 aio_context_release(ctx
);
2453 static void scsi_cd_realize(SCSIDevice
*dev
, Error
**errp
)
2455 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2459 if (!dev
->conf
.blk
) {
2460 /* Anonymous BlockBackend for an empty drive. As we put it into
2461 * dev->conf, qdev takes care of detaching on unplug. */
2462 dev
->conf
.blk
= blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL
);
2463 ret
= blk_attach_dev(dev
->conf
.blk
, &dev
->qdev
);
2467 ctx
= blk_get_aio_context(dev
->conf
.blk
);
2468 aio_context_acquire(ctx
);
2469 s
->qdev
.blocksize
= 2048;
2470 s
->qdev
.type
= TYPE_ROM
;
2471 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2473 s
->product
= g_strdup("QEMU CD-ROM");
2475 scsi_realize(&s
->qdev
, errp
);
2476 aio_context_release(ctx
);
2479 static void scsi_disk_realize(SCSIDevice
*dev
, Error
**errp
)
2482 Error
*local_err
= NULL
;
2484 warn_report("'scsi-disk' is deprecated, "
2485 "please use 'scsi-hd' or 'scsi-cd' instead");
2487 if (!dev
->conf
.blk
) {
2488 scsi_realize(dev
, &local_err
);
2490 error_propagate(errp
, local_err
);
2494 dinfo
= blk_legacy_dinfo(dev
->conf
.blk
);
2495 if (dinfo
&& dinfo
->media_cd
) {
2496 scsi_cd_realize(dev
, errp
);
2498 scsi_hd_realize(dev
, errp
);
2502 static const SCSIReqOps scsi_disk_emulate_reqops
= {
2503 .size
= sizeof(SCSIDiskReq
),
2504 .free_req
= scsi_free_request
,
2505 .send_command
= scsi_disk_emulate_command
,
2506 .read_data
= scsi_disk_emulate_read_data
,
2507 .write_data
= scsi_disk_emulate_write_data
,
2508 .get_buf
= scsi_get_buf
,
2511 static const SCSIReqOps scsi_disk_dma_reqops
= {
2512 .size
= sizeof(SCSIDiskReq
),
2513 .free_req
= scsi_free_request
,
2514 .send_command
= scsi_disk_dma_command
,
2515 .read_data
= scsi_read_data
,
2516 .write_data
= scsi_write_data
,
2517 .get_buf
= scsi_get_buf
,
2518 .load_request
= scsi_disk_load_request
,
2519 .save_request
= scsi_disk_save_request
,
2522 static const SCSIReqOps
*const scsi_disk_reqops_dispatch
[256] = {
2523 [TEST_UNIT_READY
] = &scsi_disk_emulate_reqops
,
2524 [INQUIRY
] = &scsi_disk_emulate_reqops
,
2525 [MODE_SENSE
] = &scsi_disk_emulate_reqops
,
2526 [MODE_SENSE_10
] = &scsi_disk_emulate_reqops
,
2527 [START_STOP
] = &scsi_disk_emulate_reqops
,
2528 [ALLOW_MEDIUM_REMOVAL
] = &scsi_disk_emulate_reqops
,
2529 [READ_CAPACITY_10
] = &scsi_disk_emulate_reqops
,
2530 [READ_TOC
] = &scsi_disk_emulate_reqops
,
2531 [READ_DVD_STRUCTURE
] = &scsi_disk_emulate_reqops
,
2532 [READ_DISC_INFORMATION
] = &scsi_disk_emulate_reqops
,
2533 [GET_CONFIGURATION
] = &scsi_disk_emulate_reqops
,
2534 [GET_EVENT_STATUS_NOTIFICATION
] = &scsi_disk_emulate_reqops
,
2535 [MECHANISM_STATUS
] = &scsi_disk_emulate_reqops
,
2536 [SERVICE_ACTION_IN_16
] = &scsi_disk_emulate_reqops
,
2537 [REQUEST_SENSE
] = &scsi_disk_emulate_reqops
,
2538 [SYNCHRONIZE_CACHE
] = &scsi_disk_emulate_reqops
,
2539 [SEEK_10
] = &scsi_disk_emulate_reqops
,
2540 [MODE_SELECT
] = &scsi_disk_emulate_reqops
,
2541 [MODE_SELECT_10
] = &scsi_disk_emulate_reqops
,
2542 [UNMAP
] = &scsi_disk_emulate_reqops
,
2543 [WRITE_SAME_10
] = &scsi_disk_emulate_reqops
,
2544 [WRITE_SAME_16
] = &scsi_disk_emulate_reqops
,
2545 [VERIFY_10
] = &scsi_disk_emulate_reqops
,
2546 [VERIFY_12
] = &scsi_disk_emulate_reqops
,
2547 [VERIFY_16
] = &scsi_disk_emulate_reqops
,
2549 [READ_6
] = &scsi_disk_dma_reqops
,
2550 [READ_10
] = &scsi_disk_dma_reqops
,
2551 [READ_12
] = &scsi_disk_dma_reqops
,
2552 [READ_16
] = &scsi_disk_dma_reqops
,
2553 [WRITE_6
] = &scsi_disk_dma_reqops
,
2554 [WRITE_10
] = &scsi_disk_dma_reqops
,
2555 [WRITE_12
] = &scsi_disk_dma_reqops
,
2556 [WRITE_16
] = &scsi_disk_dma_reqops
,
2557 [WRITE_VERIFY_10
] = &scsi_disk_dma_reqops
,
2558 [WRITE_VERIFY_12
] = &scsi_disk_dma_reqops
,
2559 [WRITE_VERIFY_16
] = &scsi_disk_dma_reqops
,
2562 static void scsi_disk_new_request_dump(uint32_t lun
, uint32_t tag
, uint8_t *buf
)
2565 int len
= scsi_cdb_length(buf
);
2566 char *line_buffer
, *p
;
2568 line_buffer
= g_malloc(len
* 5 + 1);
2570 for (i
= 0, p
= line_buffer
; i
< len
; i
++) {
2571 p
+= sprintf(p
, " 0x%02x", buf
[i
]);
2573 trace_scsi_disk_new_request(lun
, tag
, line_buffer
);
2575 g_free(line_buffer
);
2578 static SCSIRequest
*scsi_new_request(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
2579 uint8_t *buf
, void *hba_private
)
2581 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2583 const SCSIReqOps
*ops
;
2587 ops
= scsi_disk_reqops_dispatch
[command
];
2589 ops
= &scsi_disk_emulate_reqops
;
2591 req
= scsi_req_alloc(ops
, &s
->qdev
, tag
, lun
, hba_private
);
2593 if (trace_event_get_state_backends(TRACE_SCSI_DISK_NEW_REQUEST
)) {
2594 scsi_disk_new_request_dump(lun
, tag
, buf
);
2601 static int get_device_type(SCSIDiskState
*s
)
2607 memset(cmd
, 0, sizeof(cmd
));
2608 memset(buf
, 0, sizeof(buf
));
2610 cmd
[4] = sizeof(buf
);
2612 ret
= scsi_SG_IO_FROM_DEV(s
->qdev
.conf
.blk
, cmd
, sizeof(cmd
),
2613 buf
, sizeof(buf
), s
->qdev
.io_timeout
);
2617 s
->qdev
.type
= buf
[0];
2618 if (buf
[1] & 0x80) {
2619 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2624 static void scsi_block_realize(SCSIDevice
*dev
, Error
**errp
)
2626 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2631 if (!s
->qdev
.conf
.blk
) {
2632 error_setg(errp
, "drive property not set");
2636 if (s
->rotation_rate
) {
2637 error_report_once("rotation_rate is specified for scsi-block but is "
2638 "not implemented. This option is deprecated and will "
2639 "be removed in a future version");
2642 ctx
= blk_get_aio_context(s
->qdev
.conf
.blk
);
2643 aio_context_acquire(ctx
);
2645 /* check we are using a driver managing SG_IO (version 3 and after) */
2646 rc
= blk_ioctl(s
->qdev
.conf
.blk
, SG_GET_VERSION_NUM
, &sg_version
);
2648 error_setg_errno(errp
, -rc
, "cannot get SG_IO version number");
2650 error_append_hint(errp
, "Is this a SCSI device?\n");
2654 if (sg_version
< 30000) {
2655 error_setg(errp
, "scsi generic interface too old");
2659 /* get device type from INQUIRY data */
2660 rc
= get_device_type(s
);
2662 error_setg(errp
, "INQUIRY failed");
2666 /* Make a guess for the block size, we'll fix it when the guest sends.
2667 * READ CAPACITY. If they don't, they likely would assume these sizes
2668 * anyway. (TODO: check in /sys).
2670 if (s
->qdev
.type
== TYPE_ROM
|| s
->qdev
.type
== TYPE_WORM
) {
2671 s
->qdev
.blocksize
= 2048;
2673 s
->qdev
.blocksize
= 512;
2676 /* Makes the scsi-block device not removable by using HMP and QMP eject
2679 s
->features
|= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
);
2681 scsi_realize(&s
->qdev
, errp
);
2682 scsi_generic_read_device_inquiry(&s
->qdev
);
2685 aio_context_release(ctx
);
2688 typedef struct SCSIBlockReq
{
2690 sg_io_hdr_t io_header
;
2692 /* Selected bytes of the original CDB, copied into our own CDB. */
2693 uint8_t cmd
, cdb1
, group_number
;
2695 /* CDB passed to SG_IO. */
2697 BlockCompletionFunc
*cb
;
2701 static void scsi_block_sgio_complete(void *opaque
, int ret
)
2703 SCSIBlockReq
*req
= (SCSIBlockReq
*)opaque
;
2704 SCSIDiskReq
*r
= &req
->req
;
2705 SCSIDevice
*s
= r
->req
.dev
;
2706 sg_io_hdr_t
*io_hdr
= &req
->io_header
;
2709 if (io_hdr
->host_status
!= SCSI_HOST_OK
) {
2710 scsi_req_complete_failed(&r
->req
, io_hdr
->host_status
);
2711 scsi_req_unref(&r
->req
);
2715 if (io_hdr
->driver_status
& SG_ERR_DRIVER_TIMEOUT
) {
2718 ret
= io_hdr
->status
;
2722 aio_context_acquire(blk_get_aio_context(s
->conf
.blk
));
2723 if (scsi_handle_rw_error(r
, ret
, true)) {
2724 aio_context_release(blk_get_aio_context(s
->conf
.blk
));
2725 scsi_req_unref(&r
->req
);
2728 aio_context_release(blk_get_aio_context(s
->conf
.blk
));
2735 req
->cb(req
->cb_opaque
, ret
);
2738 static BlockAIOCB
*scsi_block_do_sgio(SCSIBlockReq
*req
,
2739 int64_t offset
, QEMUIOVector
*iov
,
2741 BlockCompletionFunc
*cb
, void *opaque
)
2743 sg_io_hdr_t
*io_header
= &req
->io_header
;
2744 SCSIDiskReq
*r
= &req
->req
;
2745 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2746 int nb_logical_blocks
;
2750 /* This is not supported yet. It can only happen if the guest does
2751 * reads and writes that are not aligned to one logical sectors
2752 * _and_ cover multiple MemoryRegions.
2754 assert(offset
% s
->qdev
.blocksize
== 0);
2755 assert(iov
->size
% s
->qdev
.blocksize
== 0);
2757 io_header
->interface_id
= 'S';
2759 /* The data transfer comes from the QEMUIOVector. */
2760 io_header
->dxfer_direction
= direction
;
2761 io_header
->dxfer_len
= iov
->size
;
2762 io_header
->dxferp
= (void *)iov
->iov
;
2763 io_header
->iovec_count
= iov
->niov
;
2764 assert(io_header
->iovec_count
== iov
->niov
); /* no overflow! */
2766 /* Build a new CDB with the LBA and length patched in, in case
2767 * DMA helpers split the transfer in multiple segments. Do not
2768 * build a CDB smaller than what the guest wanted, and only build
2769 * a larger one if strictly necessary.
2771 io_header
->cmdp
= req
->cdb
;
2772 lba
= offset
/ s
->qdev
.blocksize
;
2773 nb_logical_blocks
= io_header
->dxfer_len
/ s
->qdev
.blocksize
;
2775 if ((req
->cmd
>> 5) == 0 && lba
<= 0x1ffff) {
2777 stl_be_p(&req
->cdb
[0], lba
| (req
->cmd
<< 24));
2778 req
->cdb
[4] = nb_logical_blocks
;
2780 io_header
->cmd_len
= 6;
2781 } else if ((req
->cmd
>> 5) <= 1 && lba
<= 0xffffffffULL
) {
2783 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x20;
2784 req
->cdb
[1] = req
->cdb1
;
2785 stl_be_p(&req
->cdb
[2], lba
);
2786 req
->cdb
[6] = req
->group_number
;
2787 stw_be_p(&req
->cdb
[7], nb_logical_blocks
);
2789 io_header
->cmd_len
= 10;
2790 } else if ((req
->cmd
>> 5) != 4 && lba
<= 0xffffffffULL
) {
2792 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0xA0;
2793 req
->cdb
[1] = req
->cdb1
;
2794 stl_be_p(&req
->cdb
[2], lba
);
2795 stl_be_p(&req
->cdb
[6], nb_logical_blocks
);
2796 req
->cdb
[10] = req
->group_number
;
2798 io_header
->cmd_len
= 12;
2801 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x80;
2802 req
->cdb
[1] = req
->cdb1
;
2803 stq_be_p(&req
->cdb
[2], lba
);
2804 stl_be_p(&req
->cdb
[10], nb_logical_blocks
);
2805 req
->cdb
[14] = req
->group_number
;
2807 io_header
->cmd_len
= 16;
2810 /* The rest is as in scsi-generic.c. */
2811 io_header
->mx_sb_len
= sizeof(r
->req
.sense
);
2812 io_header
->sbp
= r
->req
.sense
;
2813 io_header
->timeout
= s
->qdev
.io_timeout
* 1000;
2814 io_header
->usr_ptr
= r
;
2815 io_header
->flags
|= SG_FLAG_DIRECT_IO
;
2817 req
->cb_opaque
= opaque
;
2818 trace_scsi_disk_aio_sgio_command(r
->req
.tag
, req
->cdb
[0], lba
,
2819 nb_logical_blocks
, io_header
->timeout
);
2820 aiocb
= blk_aio_ioctl(s
->qdev
.conf
.blk
, SG_IO
, io_header
, scsi_block_sgio_complete
, req
);
2821 assert(aiocb
!= NULL
);
2825 static bool scsi_block_no_fua(SCSICommand
*cmd
)
2830 static BlockAIOCB
*scsi_block_dma_readv(int64_t offset
,
2832 BlockCompletionFunc
*cb
, void *cb_opaque
,
2835 SCSIBlockReq
*r
= opaque
;
2836 return scsi_block_do_sgio(r
, offset
, iov
,
2837 SG_DXFER_FROM_DEV
, cb
, cb_opaque
);
2840 static BlockAIOCB
*scsi_block_dma_writev(int64_t offset
,
2842 BlockCompletionFunc
*cb
, void *cb_opaque
,
2845 SCSIBlockReq
*r
= opaque
;
2846 return scsi_block_do_sgio(r
, offset
, iov
,
2847 SG_DXFER_TO_DEV
, cb
, cb_opaque
);
2850 static bool scsi_block_is_passthrough(SCSIDiskState
*s
, uint8_t *buf
)
2856 /* Check if BYTCHK == 0x01 (data-out buffer contains data
2857 * for the number of logical blocks specified in the length
2858 * field). For other modes, do not use scatter/gather operation.
2860 if ((buf
[1] & 6) == 2) {
2873 case WRITE_VERIFY_10
:
2874 case WRITE_VERIFY_12
:
2875 case WRITE_VERIFY_16
:
2876 /* MMC writing cannot be done via DMA helpers, because it sometimes
2877 * involves writing beyond the maximum LBA or to negative LBA (lead-in).
2878 * We might use scsi_block_dma_reqops as long as no writing commands are
2879 * seen, but performance usually isn't paramount on optical media. So,
2880 * just make scsi-block operate the same as scsi-generic for them.
2882 if (s
->qdev
.type
!= TYPE_ROM
) {
2895 static int32_t scsi_block_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2897 SCSIBlockReq
*r
= (SCSIBlockReq
*)req
;
2898 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2900 r
->cmd
= req
->cmd
.buf
[0];
2901 switch (r
->cmd
>> 5) {
2904 r
->cdb1
= r
->group_number
= 0;
2908 r
->cdb1
= req
->cmd
.buf
[1];
2909 r
->group_number
= req
->cmd
.buf
[6];
2913 r
->cdb1
= req
->cmd
.buf
[1];
2914 r
->group_number
= req
->cmd
.buf
[10];
2918 r
->cdb1
= req
->cmd
.buf
[1];
2919 r
->group_number
= req
->cmd
.buf
[14];
2925 /* Protection information is not supported. For SCSI versions 2 and
2926 * older (as determined by snooping the guest's INQUIRY commands),
2927 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2929 if (s
->qdev
.scsi_version
> 2 && (req
->cmd
.buf
[1] & 0xe0)) {
2930 scsi_check_condition(&r
->req
, SENSE_CODE(INVALID_FIELD
));
2934 return scsi_disk_dma_command(req
, buf
);
2937 static const SCSIReqOps scsi_block_dma_reqops
= {
2938 .size
= sizeof(SCSIBlockReq
),
2939 .free_req
= scsi_free_request
,
2940 .send_command
= scsi_block_dma_command
,
2941 .read_data
= scsi_read_data
,
2942 .write_data
= scsi_write_data
,
2943 .get_buf
= scsi_get_buf
,
2944 .load_request
= scsi_disk_load_request
,
2945 .save_request
= scsi_disk_save_request
,
2948 static SCSIRequest
*scsi_block_new_request(SCSIDevice
*d
, uint32_t tag
,
2949 uint32_t lun
, uint8_t *buf
,
2952 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2954 if (scsi_block_is_passthrough(s
, buf
)) {
2955 return scsi_req_alloc(&scsi_generic_req_ops
, &s
->qdev
, tag
, lun
,
2958 return scsi_req_alloc(&scsi_block_dma_reqops
, &s
->qdev
, tag
, lun
,
2963 static int scsi_block_parse_cdb(SCSIDevice
*d
, SCSICommand
*cmd
,
2964 uint8_t *buf
, void *hba_private
)
2966 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2968 if (scsi_block_is_passthrough(s
, buf
)) {
2969 return scsi_bus_parse_cdb(&s
->qdev
, cmd
, buf
, hba_private
);
2971 return scsi_req_parse_cdb(&s
->qdev
, cmd
, buf
);
2975 static void scsi_block_update_sense(SCSIRequest
*req
)
2977 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2978 SCSIBlockReq
*br
= DO_UPCAST(SCSIBlockReq
, req
, r
);
2979 r
->req
.sense_len
= MIN(br
->io_header
.sb_len_wr
, sizeof(r
->req
.sense
));
2984 BlockAIOCB
*scsi_dma_readv(int64_t offset
, QEMUIOVector
*iov
,
2985 BlockCompletionFunc
*cb
, void *cb_opaque
,
2988 SCSIDiskReq
*r
= opaque
;
2989 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2990 return blk_aio_preadv(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2994 BlockAIOCB
*scsi_dma_writev(int64_t offset
, QEMUIOVector
*iov
,
2995 BlockCompletionFunc
*cb
, void *cb_opaque
,
2998 SCSIDiskReq
*r
= opaque
;
2999 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
3000 return blk_aio_pwritev(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
3003 static void scsi_disk_base_class_initfn(ObjectClass
*klass
, void *data
)
3005 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3006 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
3008 dc
->fw_name
= "disk";
3009 dc
->reset
= scsi_disk_reset
;
3010 sdc
->dma_readv
= scsi_dma_readv
;
3011 sdc
->dma_writev
= scsi_dma_writev
;
3012 sdc
->need_fua_emulation
= scsi_is_cmd_fua
;
3015 static const TypeInfo scsi_disk_base_info
= {
3016 .name
= TYPE_SCSI_DISK_BASE
,
3017 .parent
= TYPE_SCSI_DEVICE
,
3018 .class_init
= scsi_disk_base_class_initfn
,
3019 .instance_size
= sizeof(SCSIDiskState
),
3020 .class_size
= sizeof(SCSIDiskClass
),
3024 #define DEFINE_SCSI_DISK_PROPERTIES() \
3025 DEFINE_PROP_DRIVE_IOTHREAD("drive", SCSIDiskState, qdev.conf.blk), \
3026 DEFINE_BLOCK_PROPERTIES_BASE(SCSIDiskState, qdev.conf), \
3027 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
3028 DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
3029 DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
3030 DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
3031 DEFINE_PROP_STRING("product", SCSIDiskState, product), \
3032 DEFINE_PROP_STRING("device_id", SCSIDiskState, device_id)
3035 static Property scsi_hd_properties
[] = {
3036 DEFINE_SCSI_DISK_PROPERTIES(),
3037 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
3038 SCSI_DISK_F_REMOVABLE
, false),
3039 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
3040 SCSI_DISK_F_DPOFUA
, false),
3041 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3042 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3043 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3044 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3045 DEFAULT_MAX_UNMAP_SIZE
),
3046 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3047 DEFAULT_MAX_IO_SIZE
),
3048 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
3049 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3051 DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState
, qdev
.conf
),
3052 DEFINE_PROP_END_OF_LIST(),
3055 static const VMStateDescription vmstate_scsi_disk_state
= {
3056 .name
= "scsi-disk",
3058 .minimum_version_id
= 1,
3059 .fields
= (VMStateField
[]) {
3060 VMSTATE_SCSI_DEVICE(qdev
, SCSIDiskState
),
3061 VMSTATE_BOOL(media_changed
, SCSIDiskState
),
3062 VMSTATE_BOOL(media_event
, SCSIDiskState
),
3063 VMSTATE_BOOL(eject_request
, SCSIDiskState
),
3064 VMSTATE_BOOL(tray_open
, SCSIDiskState
),
3065 VMSTATE_BOOL(tray_locked
, SCSIDiskState
),
3066 VMSTATE_END_OF_LIST()
3070 static void scsi_hd_class_initfn(ObjectClass
*klass
, void *data
)
3072 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3073 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3075 sc
->realize
= scsi_hd_realize
;
3076 sc
->unrealize
= scsi_unrealize
;
3077 sc
->alloc_req
= scsi_new_request
;
3078 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3079 dc
->desc
= "virtual SCSI disk";
3080 device_class_set_props(dc
, scsi_hd_properties
);
3081 dc
->vmsd
= &vmstate_scsi_disk_state
;
3084 static const TypeInfo scsi_hd_info
= {
3086 .parent
= TYPE_SCSI_DISK_BASE
,
3087 .class_init
= scsi_hd_class_initfn
,
3090 static Property scsi_cd_properties
[] = {
3091 DEFINE_SCSI_DISK_PROPERTIES(),
3092 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3093 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3094 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3095 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3096 DEFAULT_MAX_IO_SIZE
),
3097 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3099 DEFINE_PROP_END_OF_LIST(),
3102 static void scsi_cd_class_initfn(ObjectClass
*klass
, void *data
)
3104 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3105 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3107 sc
->realize
= scsi_cd_realize
;
3108 sc
->alloc_req
= scsi_new_request
;
3109 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3110 dc
->desc
= "virtual SCSI CD-ROM";
3111 device_class_set_props(dc
, scsi_cd_properties
);
3112 dc
->vmsd
= &vmstate_scsi_disk_state
;
3115 static const TypeInfo scsi_cd_info
= {
3117 .parent
= TYPE_SCSI_DISK_BASE
,
3118 .class_init
= scsi_cd_class_initfn
,
3122 static Property scsi_block_properties
[] = {
3123 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState
, qdev
.conf
),
3124 DEFINE_PROP_DRIVE("drive", SCSIDiskState
, qdev
.conf
.blk
),
3125 DEFINE_PROP_BOOL("share-rw", SCSIDiskState
, qdev
.conf
.share_rw
, false),
3126 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
3127 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3128 DEFAULT_MAX_UNMAP_SIZE
),
3129 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3130 DEFAULT_MAX_IO_SIZE
),
3131 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3133 DEFINE_PROP_UINT32("io_timeout", SCSIDiskState
, qdev
.io_timeout
,
3134 DEFAULT_IO_TIMEOUT
),
3135 DEFINE_PROP_END_OF_LIST(),
3138 static void scsi_block_class_initfn(ObjectClass
*klass
, void *data
)
3140 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3141 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3142 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
3144 sc
->realize
= scsi_block_realize
;
3145 sc
->alloc_req
= scsi_block_new_request
;
3146 sc
->parse_cdb
= scsi_block_parse_cdb
;
3147 sdc
->dma_readv
= scsi_block_dma_readv
;
3148 sdc
->dma_writev
= scsi_block_dma_writev
;
3149 sdc
->update_sense
= scsi_block_update_sense
;
3150 sdc
->need_fua_emulation
= scsi_block_no_fua
;
3151 dc
->desc
= "SCSI block device passthrough";
3152 device_class_set_props(dc
, scsi_block_properties
);
3153 dc
->vmsd
= &vmstate_scsi_disk_state
;
3156 static const TypeInfo scsi_block_info
= {
3157 .name
= "scsi-block",
3158 .parent
= TYPE_SCSI_DISK_BASE
,
3159 .class_init
= scsi_block_class_initfn
,
3163 static Property scsi_disk_properties
[] = {
3164 DEFINE_SCSI_DISK_PROPERTIES(),
3165 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
3166 SCSI_DISK_F_REMOVABLE
, false),
3167 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
3168 SCSI_DISK_F_DPOFUA
, false),
3169 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3170 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3171 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3172 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3173 DEFAULT_MAX_UNMAP_SIZE
),
3174 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3175 DEFAULT_MAX_IO_SIZE
),
3176 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3178 DEFINE_PROP_END_OF_LIST(),
3181 static void scsi_disk_class_initfn(ObjectClass
*klass
, void *data
)
3183 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3184 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3186 sc
->realize
= scsi_disk_realize
;
3187 sc
->alloc_req
= scsi_new_request
;
3188 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3189 dc
->fw_name
= "disk";
3190 dc
->desc
= "virtual SCSI disk or CD-ROM (legacy)";
3191 dc
->reset
= scsi_disk_reset
;
3192 device_class_set_props(dc
, scsi_disk_properties
);
3193 dc
->vmsd
= &vmstate_scsi_disk_state
;
3196 static const TypeInfo scsi_disk_info
= {
3197 .name
= "scsi-disk",
3198 .parent
= TYPE_SCSI_DISK_BASE
,
3199 .class_init
= scsi_disk_class_initfn
,
3202 static void scsi_disk_register_types(void)
3204 type_register_static(&scsi_disk_base_info
);
3205 type_register_static(&scsi_hd_info
);
3206 type_register_static(&scsi_cd_info
);
3208 type_register_static(&scsi_block_info
);
3210 type_register_static(&scsi_disk_info
);
3213 type_init(scsi_disk_register_types
)