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.
25 #define DPRINTF(fmt, ...) \
26 do { printf("scsi-disk: " fmt , ## __VA_ARGS__); } while (0)
28 #define DPRINTF(fmt, ...) do {} while(0)
31 #include "qemu/osdep.h"
32 #include "qemu/units.h"
33 #include "qapi/error.h"
34 #include "qemu/error-report.h"
35 #include "hw/scsi/scsi.h"
36 #include "hw/scsi/emulation.h"
37 #include "scsi/constants.h"
38 #include "sysemu/sysemu.h"
39 #include "sysemu/block-backend.h"
40 #include "sysemu/blockdev.h"
41 #include "hw/block/block.h"
42 #include "sysemu/dma.h"
43 #include "qemu/cutils.h"
49 #define SCSI_WRITE_SAME_MAX (512 * KiB)
50 #define SCSI_DMA_BUF_SIZE (128 * KiB)
51 #define SCSI_MAX_INQUIRY_LEN 256
52 #define SCSI_MAX_MODE_LEN 256
54 #define DEFAULT_DISCARD_GRANULARITY (4 * KiB)
55 #define DEFAULT_MAX_UNMAP_SIZE (1 * GiB)
56 #define DEFAULT_MAX_IO_SIZE INT_MAX /* 2 GB - 1 block */
58 #define TYPE_SCSI_DISK_BASE "scsi-disk-base"
60 #define SCSI_DISK_BASE(obj) \
61 OBJECT_CHECK(SCSIDiskState, (obj), TYPE_SCSI_DISK_BASE)
62 #define SCSI_DISK_BASE_CLASS(klass) \
63 OBJECT_CLASS_CHECK(SCSIDiskClass, (klass), TYPE_SCSI_DISK_BASE)
64 #define SCSI_DISK_BASE_GET_CLASS(obj) \
65 OBJECT_GET_CLASS(SCSIDiskClass, (obj), TYPE_SCSI_DISK_BASE)
67 typedef struct SCSIDiskClass
{
68 SCSIDeviceClass parent_class
;
70 DMAIOFunc
*dma_writev
;
71 bool (*need_fua_emulation
)(SCSICommand
*cmd
);
74 typedef struct SCSIDiskReq
{
76 /* Both sector and sector_count are in terms of qemu 512 byte blocks. */
78 uint32_t sector_count
;
81 bool need_fua_emulation
;
85 unsigned char *status
;
88 #define SCSI_DISK_F_REMOVABLE 0
89 #define SCSI_DISK_F_DPOFUA 1
90 #define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
92 typedef struct SCSIDiskState
100 uint64_t max_unmap_size
;
101 uint64_t max_io_size
;
110 * 0x0000 - rotation rate not reported
111 * 0x0001 - non-rotating medium (SSD)
112 * 0x0002-0x0400 - reserved
113 * 0x0401-0xffe - rotations per minute
116 uint16_t rotation_rate
;
119 static bool scsi_handle_rw_error(SCSIDiskReq
*r
, int error
, bool acct_failed
);
121 static void scsi_free_request(SCSIRequest
*req
)
123 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
125 qemu_vfree(r
->iov
.iov_base
);
128 /* Helper function for command completion with sense. */
129 static void scsi_check_condition(SCSIDiskReq
*r
, SCSISense sense
)
131 DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
132 r
->req
.tag
, sense
.key
, sense
.asc
, sense
.ascq
);
133 scsi_req_build_sense(&r
->req
, sense
);
134 scsi_req_complete(&r
->req
, CHECK_CONDITION
);
137 static void scsi_init_iovec(SCSIDiskReq
*r
, size_t size
)
139 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
141 if (!r
->iov
.iov_base
) {
143 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
145 r
->iov
.iov_len
= MIN(r
->sector_count
* 512, r
->buflen
);
146 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
149 static void scsi_disk_save_request(QEMUFile
*f
, SCSIRequest
*req
)
151 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
153 qemu_put_be64s(f
, &r
->sector
);
154 qemu_put_be32s(f
, &r
->sector_count
);
155 qemu_put_be32s(f
, &r
->buflen
);
157 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
158 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
159 } else if (!req
->retry
) {
160 uint32_t len
= r
->iov
.iov_len
;
161 qemu_put_be32s(f
, &len
);
162 qemu_put_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
167 static void scsi_disk_load_request(QEMUFile
*f
, SCSIRequest
*req
)
169 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
171 qemu_get_be64s(f
, &r
->sector
);
172 qemu_get_be32s(f
, &r
->sector_count
);
173 qemu_get_be32s(f
, &r
->buflen
);
175 scsi_init_iovec(r
, r
->buflen
);
176 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
177 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
178 } else if (!r
->req
.retry
) {
180 qemu_get_be32s(f
, &len
);
181 r
->iov
.iov_len
= len
;
182 assert(r
->iov
.iov_len
<= r
->buflen
);
183 qemu_get_buffer(f
, r
->iov
.iov_base
, r
->iov
.iov_len
);
187 qemu_iovec_init_external(&r
->qiov
, &r
->iov
, 1);
190 static bool scsi_disk_req_check_error(SCSIDiskReq
*r
, int ret
, bool acct_failed
)
192 if (r
->req
.io_canceled
) {
193 scsi_req_cancel_complete(&r
->req
);
197 if (ret
< 0 || (r
->status
&& *r
->status
)) {
198 return scsi_handle_rw_error(r
, -ret
, acct_failed
);
204 static void scsi_aio_complete(void *opaque
, int ret
)
206 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
207 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
209 assert(r
->req
.aiocb
!= NULL
);
211 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
212 if (scsi_disk_req_check_error(r
, ret
, true)) {
216 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
217 scsi_req_complete(&r
->req
, GOOD
);
220 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
221 scsi_req_unref(&r
->req
);
224 static bool scsi_is_cmd_fua(SCSICommand
*cmd
)
226 switch (cmd
->buf
[0]) {
233 return (cmd
->buf
[1] & 8) != 0;
238 case WRITE_VERIFY_10
:
239 case WRITE_VERIFY_12
:
240 case WRITE_VERIFY_16
:
250 static void scsi_write_do_fua(SCSIDiskReq
*r
)
252 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
254 assert(r
->req
.aiocb
== NULL
);
255 assert(!r
->req
.io_canceled
);
257 if (r
->need_fua_emulation
) {
258 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
260 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
264 scsi_req_complete(&r
->req
, GOOD
);
265 scsi_req_unref(&r
->req
);
268 static void scsi_dma_complete_noio(SCSIDiskReq
*r
, int ret
)
270 assert(r
->req
.aiocb
== NULL
);
271 if (scsi_disk_req_check_error(r
, ret
, false)) {
275 r
->sector
+= r
->sector_count
;
277 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
278 scsi_write_do_fua(r
);
281 scsi_req_complete(&r
->req
, GOOD
);
285 scsi_req_unref(&r
->req
);
288 static void scsi_dma_complete(void *opaque
, int ret
)
290 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
291 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
293 assert(r
->req
.aiocb
!= NULL
);
296 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
298 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
300 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
302 scsi_dma_complete_noio(r
, ret
);
303 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
306 static void scsi_read_complete(void * opaque
, int ret
)
308 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
309 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
312 assert(r
->req
.aiocb
!= NULL
);
314 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
315 if (scsi_disk_req_check_error(r
, ret
, true)) {
319 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
320 DPRINTF("Data ready tag=0x%x len=%zd\n", r
->req
.tag
, r
->qiov
.size
);
322 n
= r
->qiov
.size
/ 512;
324 r
->sector_count
-= n
;
325 scsi_req_data(&r
->req
, r
->qiov
.size
);
328 scsi_req_unref(&r
->req
);
329 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
332 /* Actually issue a read to the block device. */
333 static void scsi_do_read(SCSIDiskReq
*r
, int ret
)
335 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
336 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
338 assert (r
->req
.aiocb
== NULL
);
339 if (scsi_disk_req_check_error(r
, ret
, false)) {
343 /* The request is used as the AIO opaque value, so add a ref. */
344 scsi_req_ref(&r
->req
);
347 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_READ
);
348 r
->req
.resid
-= r
->req
.sg
->size
;
349 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
350 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
352 sdc
->dma_readv
, r
, scsi_dma_complete
, r
,
353 DMA_DIRECTION_FROM_DEVICE
);
355 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
356 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
357 r
->qiov
.size
, BLOCK_ACCT_READ
);
358 r
->req
.aiocb
= sdc
->dma_readv(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
359 scsi_read_complete
, r
, r
);
363 scsi_req_unref(&r
->req
);
366 static void scsi_do_read_cb(void *opaque
, int ret
)
368 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
369 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
371 assert (r
->req
.aiocb
!= NULL
);
374 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
376 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
378 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
380 scsi_do_read(opaque
, ret
);
381 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
384 /* Read more data from scsi device into buffer. */
385 static void scsi_read_data(SCSIRequest
*req
)
387 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
388 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
391 DPRINTF("Read sector_count=%d\n", r
->sector_count
);
392 if (r
->sector_count
== 0) {
393 /* This also clears the sense buffer for REQUEST SENSE. */
394 scsi_req_complete(&r
->req
, GOOD
);
398 /* No data transfer may already be in progress */
399 assert(r
->req
.aiocb
== NULL
);
401 /* The request is used as the AIO opaque value, so add a ref. */
402 scsi_req_ref(&r
->req
);
403 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
404 DPRINTF("Data transfer direction invalid\n");
405 scsi_read_complete(r
, -EINVAL
);
409 if (!blk_is_available(req
->dev
->conf
.blk
)) {
410 scsi_read_complete(r
, -ENOMEDIUM
);
416 if (first
&& r
->need_fua_emulation
) {
417 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
419 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_do_read_cb
, r
);
426 * scsi_handle_rw_error has two return values. False means that the error
427 * must be ignored, true means that the error has been processed and the
428 * caller should not do anything else for this request. Note that
429 * scsi_handle_rw_error always manages its reference counts, independent
430 * of the return value.
432 static bool scsi_handle_rw_error(SCSIDiskReq
*r
, int error
, bool acct_failed
)
434 bool is_read
= (r
->req
.cmd
.mode
== SCSI_XFER_FROM_DEV
);
435 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
436 BlockErrorAction action
= blk_get_error_action(s
->qdev
.conf
.blk
,
439 if (action
== BLOCK_ERROR_ACTION_REPORT
) {
441 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
445 /* A passthrough command has run and has produced sense data; check
446 * whether the error has to be handled by the guest or should rather
449 assert(r
->status
&& *r
->status
);
450 error
= scsi_sense_buf_to_errno(r
->req
.sense
, sizeof(r
->req
.sense
));
451 if (error
== ECANCELED
|| error
== EAGAIN
|| error
== ENOTCONN
||
453 /* These errors are handled by guest. */
454 scsi_req_complete(&r
->req
, *r
->status
);
459 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
462 scsi_check_condition(r
, SENSE_CODE(TARGET_FAILURE
));
465 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
468 scsi_check_condition(r
, SENSE_CODE(SPACE_ALLOC_FAILED
));
471 scsi_check_condition(r
, SENSE_CODE(IO_ERROR
));
476 blk_error_action(s
->qdev
.conf
.blk
, action
, is_read
, error
);
477 if (action
== BLOCK_ERROR_ACTION_IGNORE
) {
478 scsi_req_complete(&r
->req
, 0);
482 if (action
== BLOCK_ERROR_ACTION_STOP
) {
483 scsi_req_retry(&r
->req
);
488 static void scsi_write_complete_noio(SCSIDiskReq
*r
, int ret
)
492 assert (r
->req
.aiocb
== NULL
);
493 if (scsi_disk_req_check_error(r
, ret
, false)) {
497 n
= r
->qiov
.size
/ 512;
499 r
->sector_count
-= n
;
500 if (r
->sector_count
== 0) {
501 scsi_write_do_fua(r
);
504 scsi_init_iovec(r
, SCSI_DMA_BUF_SIZE
);
505 DPRINTF("Write complete tag=0x%x more=%zd\n", r
->req
.tag
, r
->qiov
.size
);
506 scsi_req_data(&r
->req
, r
->qiov
.size
);
510 scsi_req_unref(&r
->req
);
513 static void scsi_write_complete(void * opaque
, int ret
)
515 SCSIDiskReq
*r
= (SCSIDiskReq
*)opaque
;
516 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
518 assert (r
->req
.aiocb
!= NULL
);
521 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
523 block_acct_failed(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
525 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
527 scsi_write_complete_noio(r
, ret
);
528 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
531 static void scsi_write_data(SCSIRequest
*req
)
533 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
534 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
535 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
537 /* No data transfer may already be in progress */
538 assert(r
->req
.aiocb
== NULL
);
540 /* The request is used as the AIO opaque value, so add a ref. */
541 scsi_req_ref(&r
->req
);
542 if (r
->req
.cmd
.mode
!= SCSI_XFER_TO_DEV
) {
543 DPRINTF("Data transfer direction invalid\n");
544 scsi_write_complete_noio(r
, -EINVAL
);
548 if (!r
->req
.sg
&& !r
->qiov
.size
) {
549 /* Called for the first time. Ask the driver to send us more data. */
551 scsi_write_complete_noio(r
, 0);
554 if (!blk_is_available(req
->dev
->conf
.blk
)) {
555 scsi_write_complete_noio(r
, -ENOMEDIUM
);
559 if (r
->req
.cmd
.buf
[0] == VERIFY_10
|| r
->req
.cmd
.buf
[0] == VERIFY_12
||
560 r
->req
.cmd
.buf
[0] == VERIFY_16
) {
562 scsi_dma_complete_noio(r
, 0);
564 scsi_write_complete_noio(r
, 0);
570 dma_acct_start(s
->qdev
.conf
.blk
, &r
->acct
, r
->req
.sg
, BLOCK_ACCT_WRITE
);
571 r
->req
.resid
-= r
->req
.sg
->size
;
572 r
->req
.aiocb
= dma_blk_io(blk_get_aio_context(s
->qdev
.conf
.blk
),
573 r
->req
.sg
, r
->sector
<< BDRV_SECTOR_BITS
,
575 sdc
->dma_writev
, r
, scsi_dma_complete
, r
,
576 DMA_DIRECTION_TO_DEVICE
);
578 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
579 r
->qiov
.size
, BLOCK_ACCT_WRITE
);
580 r
->req
.aiocb
= sdc
->dma_writev(r
->sector
<< BDRV_SECTOR_BITS
, &r
->qiov
,
581 scsi_write_complete
, r
, r
);
585 /* Return a pointer to the data buffer. */
586 static uint8_t *scsi_get_buf(SCSIRequest
*req
)
588 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
590 return (uint8_t *)r
->iov
.iov_base
;
593 static int scsi_disk_emulate_vpd_page(SCSIRequest
*req
, uint8_t *outbuf
)
595 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
596 uint8_t page_code
= req
->cmd
.buf
[2];
597 int start
, buflen
= 0;
599 outbuf
[buflen
++] = s
->qdev
.type
& 0x1f;
600 outbuf
[buflen
++] = page_code
;
601 outbuf
[buflen
++] = 0x00;
602 outbuf
[buflen
++] = 0x00;
606 case 0x00: /* Supported page codes, mandatory */
608 DPRINTF("Inquiry EVPD[Supported pages] "
609 "buffer size %zd\n", req
->cmd
.xfer
);
610 outbuf
[buflen
++] = 0x00; /* list of supported pages (this page) */
612 outbuf
[buflen
++] = 0x80; /* unit serial number */
614 outbuf
[buflen
++] = 0x83; /* device identification */
615 if (s
->qdev
.type
== TYPE_DISK
) {
616 outbuf
[buflen
++] = 0xb0; /* block limits */
617 outbuf
[buflen
++] = 0xb1; /* block device characteristics */
618 outbuf
[buflen
++] = 0xb2; /* thin provisioning */
622 case 0x80: /* Device serial number, optional */
627 DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
631 l
= strlen(s
->serial
);
636 DPRINTF("Inquiry EVPD[Serial number] "
637 "buffer size %zd\n", req
->cmd
.xfer
);
638 memcpy(outbuf
+ buflen
, s
->serial
, l
);
643 case 0x83: /* Device identification page, mandatory */
645 const char *str
= s
->serial
?: blk_name(s
->qdev
.conf
.blk
);
646 int max_len
= s
->serial
? 20 : 255 - 8;
647 int id_len
= strlen(str
);
649 if (id_len
> max_len
) {
652 DPRINTF("Inquiry EVPD[Device identification] "
653 "buffer size %zd\n", req
->cmd
.xfer
);
655 outbuf
[buflen
++] = 0x2; /* ASCII */
656 outbuf
[buflen
++] = 0; /* not officially assigned */
657 outbuf
[buflen
++] = 0; /* reserved */
658 outbuf
[buflen
++] = id_len
; /* length of data following */
659 memcpy(outbuf
+ buflen
, str
, id_len
);
663 outbuf
[buflen
++] = 0x1; /* Binary */
664 outbuf
[buflen
++] = 0x3; /* NAA */
665 outbuf
[buflen
++] = 0; /* reserved */
666 outbuf
[buflen
++] = 8;
667 stq_be_p(&outbuf
[buflen
], s
->qdev
.wwn
);
671 if (s
->qdev
.port_wwn
) {
672 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
673 outbuf
[buflen
++] = 0x93; /* PIV / Target port / NAA */
674 outbuf
[buflen
++] = 0; /* reserved */
675 outbuf
[buflen
++] = 8;
676 stq_be_p(&outbuf
[buflen
], s
->qdev
.port_wwn
);
681 outbuf
[buflen
++] = 0x61; /* SAS / Binary */
683 /* PIV/Target port/relative target port */
684 outbuf
[buflen
++] = 0x94;
686 outbuf
[buflen
++] = 0; /* reserved */
687 outbuf
[buflen
++] = 4;
688 stw_be_p(&outbuf
[buflen
+ 2], s
->port_index
);
693 case 0xb0: /* block limits */
695 SCSIBlockLimits bl
= {};
697 if (s
->qdev
.type
== TYPE_ROM
) {
698 DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
704 s
->qdev
.conf
.discard_granularity
/ s
->qdev
.blocksize
;
706 s
->qdev
.conf
.min_io_size
/ s
->qdev
.blocksize
;
708 s
->qdev
.conf
.opt_io_size
/ s
->qdev
.blocksize
;
709 bl
.max_unmap_sectors
=
710 s
->max_unmap_size
/ s
->qdev
.blocksize
;
712 s
->max_io_size
/ s
->qdev
.blocksize
;
713 /* 255 descriptors fit in 4 KiB with an 8-byte header */
714 bl
.max_unmap_descr
= 255;
716 if (s
->qdev
.type
== TYPE_DISK
) {
717 int max_transfer_blk
= blk_get_max_transfer(s
->qdev
.conf
.blk
);
718 int max_io_sectors_blk
=
719 max_transfer_blk
/ s
->qdev
.blocksize
;
722 MIN_NON_ZERO(max_io_sectors_blk
, bl
.max_io_sectors
);
724 buflen
+= scsi_emulate_block_limits(outbuf
+ buflen
, &bl
);
727 case 0xb1: /* block device characteristics */
730 outbuf
[4] = (s
->rotation_rate
>> 8) & 0xff;
731 outbuf
[5] = s
->rotation_rate
& 0xff;
732 outbuf
[6] = 0; /* PRODUCT TYPE */
733 outbuf
[7] = 0; /* WABEREQ | WACEREQ | NOMINAL FORM FACTOR */
734 outbuf
[8] = 0; /* VBULS */
737 case 0xb2: /* thin provisioning */
741 outbuf
[5] = 0xe0; /* unmap & write_same 10/16 all supported */
742 outbuf
[6] = s
->qdev
.conf
.discard_granularity
? 2 : 1;
750 assert(buflen
- start
<= 255);
751 outbuf
[start
- 1] = buflen
- start
;
755 static int scsi_disk_emulate_inquiry(SCSIRequest
*req
, uint8_t *outbuf
)
757 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
760 if (req
->cmd
.buf
[1] & 0x1) {
761 /* Vital product data */
762 return scsi_disk_emulate_vpd_page(req
, outbuf
);
765 /* Standard INQUIRY data */
766 if (req
->cmd
.buf
[2] != 0) {
771 buflen
= req
->cmd
.xfer
;
772 if (buflen
> SCSI_MAX_INQUIRY_LEN
) {
773 buflen
= SCSI_MAX_INQUIRY_LEN
;
776 outbuf
[0] = s
->qdev
.type
& 0x1f;
777 outbuf
[1] = (s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) ? 0x80 : 0;
779 strpadcpy((char *) &outbuf
[16], 16, s
->product
, ' ');
780 strpadcpy((char *) &outbuf
[8], 8, s
->vendor
, ' ');
782 memset(&outbuf
[32], 0, 4);
783 memcpy(&outbuf
[32], s
->version
, MIN(4, strlen(s
->version
)));
785 * We claim conformance to SPC-3, which is required for guests
786 * to ask for modern features like READ CAPACITY(16) or the
787 * block characteristics VPD page by default. Not all of SPC-3
788 * is actually implemented, but we're good enough.
790 outbuf
[2] = s
->qdev
.default_scsi_version
;
791 outbuf
[3] = 2 | 0x10; /* Format 2, HiSup */
794 outbuf
[4] = buflen
- 5; /* Additional Length = (Len - 1) - 4 */
796 /* If the allocation length of CDB is too small,
797 the additional length is not adjusted */
801 /* Sync data transfer and TCQ. */
802 outbuf
[7] = 0x10 | (req
->bus
->info
->tcq
? 0x02 : 0);
806 static inline bool media_is_dvd(SCSIDiskState
*s
)
809 if (s
->qdev
.type
!= TYPE_ROM
) {
812 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
815 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
816 return nb_sectors
> CD_MAX_SECTORS
;
819 static inline bool media_is_cd(SCSIDiskState
*s
)
822 if (s
->qdev
.type
!= TYPE_ROM
) {
825 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
828 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
829 return nb_sectors
<= CD_MAX_SECTORS
;
832 static int scsi_read_disc_information(SCSIDiskState
*s
, SCSIDiskReq
*r
,
835 uint8_t type
= r
->req
.cmd
.buf
[1] & 7;
837 if (s
->qdev
.type
!= TYPE_ROM
) {
841 /* Types 1/2 are only defined for Blu-Ray. */
843 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
847 memset(outbuf
, 0, 34);
849 outbuf
[2] = 0xe; /* last session complete, disc finalized */
850 outbuf
[3] = 1; /* first track on disc */
851 outbuf
[4] = 1; /* # of sessions */
852 outbuf
[5] = 1; /* first track of last session */
853 outbuf
[6] = 1; /* last track of last session */
854 outbuf
[7] = 0x20; /* unrestricted use */
855 outbuf
[8] = 0x00; /* CD-ROM or DVD-ROM */
856 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
857 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
858 /* 24-31: disc bar code */
859 /* 32: disc application code */
860 /* 33: number of OPC tables */
865 static int scsi_read_dvd_structure(SCSIDiskState
*s
, SCSIDiskReq
*r
,
868 static const int rds_caps_size
[5] = {
875 uint8_t media
= r
->req
.cmd
.buf
[1];
876 uint8_t layer
= r
->req
.cmd
.buf
[6];
877 uint8_t format
= r
->req
.cmd
.buf
[7];
880 if (s
->qdev
.type
!= TYPE_ROM
) {
884 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
888 if (format
!= 0xff) {
889 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
890 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
893 if (media_is_cd(s
)) {
894 scsi_check_condition(r
, SENSE_CODE(INCOMPATIBLE_FORMAT
));
897 if (format
>= ARRAY_SIZE(rds_caps_size
)) {
900 size
= rds_caps_size
[format
];
901 memset(outbuf
, 0, size
);
906 /* Physical format information */
911 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
913 outbuf
[4] = 1; /* DVD-ROM, part version 1 */
914 outbuf
[5] = 0xf; /* 120mm disc, minimum rate unspecified */
915 outbuf
[6] = 1; /* one layer, read-only (per MMC-2 spec) */
916 outbuf
[7] = 0; /* default densities */
918 stl_be_p(&outbuf
[12], (nb_sectors
>> 2) - 1); /* end sector */
919 stl_be_p(&outbuf
[16], (nb_sectors
>> 2) - 1); /* l0 end sector */
923 case 0x01: /* DVD copyright information, all zeros */
926 case 0x03: /* BCA information - invalid field for no BCA info */
929 case 0x04: /* DVD disc manufacturing information, all zeros */
932 case 0xff: { /* List capabilities */
935 for (i
= 0; i
< ARRAY_SIZE(rds_caps_size
); i
++) {
936 if (!rds_caps_size
[i
]) {
940 outbuf
[size
+ 1] = 0x40; /* Not writable, readable */
941 stw_be_p(&outbuf
[size
+ 2], rds_caps_size
[i
]);
951 /* Size of buffer, not including 2 byte size field */
952 stw_be_p(outbuf
, size
- 2);
959 static int scsi_event_status_media(SCSIDiskState
*s
, uint8_t *outbuf
)
961 uint8_t event_code
, media_status
;
965 media_status
= MS_TRAY_OPEN
;
966 } else if (blk_is_inserted(s
->qdev
.conf
.blk
)) {
967 media_status
= MS_MEDIA_PRESENT
;
970 /* Event notification descriptor */
971 event_code
= MEC_NO_CHANGE
;
972 if (media_status
!= MS_TRAY_OPEN
) {
973 if (s
->media_event
) {
974 event_code
= MEC_NEW_MEDIA
;
975 s
->media_event
= false;
976 } else if (s
->eject_request
) {
977 event_code
= MEC_EJECT_REQUESTED
;
978 s
->eject_request
= false;
982 outbuf
[0] = event_code
;
983 outbuf
[1] = media_status
;
985 /* These fields are reserved, just clear them. */
991 static int scsi_get_event_status_notification(SCSIDiskState
*s
, SCSIDiskReq
*r
,
995 uint8_t *buf
= r
->req
.cmd
.buf
;
996 uint8_t notification_class_request
= buf
[4];
997 if (s
->qdev
.type
!= TYPE_ROM
) {
1000 if ((buf
[1] & 1) == 0) {
1006 outbuf
[0] = outbuf
[1] = 0;
1007 outbuf
[3] = 1 << GESN_MEDIA
; /* supported events */
1008 if (notification_class_request
& (1 << GESN_MEDIA
)) {
1009 outbuf
[2] = GESN_MEDIA
;
1010 size
+= scsi_event_status_media(s
, &outbuf
[size
]);
1014 stw_be_p(outbuf
, size
- 4);
1018 static int scsi_get_configuration(SCSIDiskState
*s
, uint8_t *outbuf
)
1022 if (s
->qdev
.type
!= TYPE_ROM
) {
1026 if (media_is_dvd(s
)) {
1027 current
= MMC_PROFILE_DVD_ROM
;
1028 } else if (media_is_cd(s
)) {
1029 current
= MMC_PROFILE_CD_ROM
;
1031 current
= MMC_PROFILE_NONE
;
1034 memset(outbuf
, 0, 40);
1035 stl_be_p(&outbuf
[0], 36); /* Bytes after the data length field */
1036 stw_be_p(&outbuf
[6], current
);
1037 /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
1038 outbuf
[10] = 0x03; /* persistent, current */
1039 outbuf
[11] = 8; /* two profiles */
1040 stw_be_p(&outbuf
[12], MMC_PROFILE_DVD_ROM
);
1041 outbuf
[14] = (current
== MMC_PROFILE_DVD_ROM
);
1042 stw_be_p(&outbuf
[16], MMC_PROFILE_CD_ROM
);
1043 outbuf
[18] = (current
== MMC_PROFILE_CD_ROM
);
1044 /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
1045 stw_be_p(&outbuf
[20], 1);
1046 outbuf
[22] = 0x08 | 0x03; /* version 2, persistent, current */
1048 stl_be_p(&outbuf
[24], 1); /* SCSI */
1049 outbuf
[28] = 1; /* DBE = 1, mandatory */
1050 /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
1051 stw_be_p(&outbuf
[32], 3);
1052 outbuf
[34] = 0x08 | 0x03; /* version 2, persistent, current */
1054 outbuf
[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
1055 /* TODO: Random readable, CD read, DVD read, drive serial number,
1060 static int scsi_emulate_mechanism_status(SCSIDiskState
*s
, uint8_t *outbuf
)
1062 if (s
->qdev
.type
!= TYPE_ROM
) {
1065 memset(outbuf
, 0, 8);
1066 outbuf
[5] = 1; /* CD-ROM */
1070 static int mode_sense_page(SCSIDiskState
*s
, int page
, uint8_t **p_outbuf
,
1073 static const int mode_sense_valid
[0x3f] = {
1074 [MODE_PAGE_HD_GEOMETRY
] = (1 << TYPE_DISK
),
1075 [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
] = (1 << TYPE_DISK
),
1076 [MODE_PAGE_CACHING
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1077 [MODE_PAGE_R_W_ERROR
] = (1 << TYPE_DISK
) | (1 << TYPE_ROM
),
1078 [MODE_PAGE_AUDIO_CTL
] = (1 << TYPE_ROM
),
1079 [MODE_PAGE_CAPABILITIES
] = (1 << TYPE_ROM
),
1082 uint8_t *p
= *p_outbuf
+ 2;
1085 if ((mode_sense_valid
[page
] & (1 << s
->qdev
.type
)) == 0) {
1090 * If Changeable Values are requested, a mask denoting those mode parameters
1091 * that are changeable shall be returned. As we currently don't support
1092 * parameter changes via MODE_SELECT all bits are returned set to zero.
1093 * The buffer was already menset to zero by the caller of this function.
1095 * The offsets here are off by two compared to the descriptions in the
1096 * SCSI specs, because those include a 2-byte header. This is unfortunate,
1097 * but it is done so that offsets are consistent within our implementation
1098 * of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
1099 * 2-byte and 4-byte headers.
1102 case MODE_PAGE_HD_GEOMETRY
:
1104 if (page_control
== 1) { /* Changeable Values */
1107 /* if a geometry hint is available, use it */
1108 p
[0] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1109 p
[1] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1110 p
[2] = s
->qdev
.conf
.cyls
& 0xff;
1111 p
[3] = s
->qdev
.conf
.heads
& 0xff;
1112 /* Write precomp start cylinder, disabled */
1113 p
[4] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1114 p
[5] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1115 p
[6] = s
->qdev
.conf
.cyls
& 0xff;
1116 /* Reduced current start cylinder, disabled */
1117 p
[7] = (s
->qdev
.conf
.cyls
>> 16) & 0xff;
1118 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1119 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1120 /* Device step rate [ns], 200ns */
1123 /* Landing zone cylinder */
1127 /* Medium rotation rate [rpm], 5400 rpm */
1128 p
[18] = (5400 >> 8) & 0xff;
1129 p
[19] = 5400 & 0xff;
1132 case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY
:
1134 if (page_control
== 1) { /* Changeable Values */
1137 /* Transfer rate [kbit/s], 5Mbit/s */
1140 /* if a geometry hint is available, use it */
1141 p
[2] = s
->qdev
.conf
.heads
& 0xff;
1142 p
[3] = s
->qdev
.conf
.secs
& 0xff;
1143 p
[4] = s
->qdev
.blocksize
>> 8;
1144 p
[6] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1145 p
[7] = s
->qdev
.conf
.cyls
& 0xff;
1146 /* Write precomp start cylinder, disabled */
1147 p
[8] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1148 p
[9] = s
->qdev
.conf
.cyls
& 0xff;
1149 /* Reduced current start cylinder, disabled */
1150 p
[10] = (s
->qdev
.conf
.cyls
>> 8) & 0xff;
1151 p
[11] = s
->qdev
.conf
.cyls
& 0xff;
1152 /* Device step rate [100us], 100us */
1155 /* Device step pulse width [us], 1us */
1157 /* Device head settle delay [100us], 100us */
1160 /* Motor on delay [0.1s], 0.1s */
1162 /* Motor off delay [0.1s], 0.1s */
1164 /* Medium rotation rate [rpm], 5400 rpm */
1165 p
[26] = (5400 >> 8) & 0xff;
1166 p
[27] = 5400 & 0xff;
1169 case MODE_PAGE_CACHING
:
1171 if (page_control
== 1 || /* Changeable Values */
1172 blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1177 case MODE_PAGE_R_W_ERROR
:
1179 if (page_control
== 1) { /* Changeable Values */
1182 p
[0] = 0x80; /* Automatic Write Reallocation Enabled */
1183 if (s
->qdev
.type
== TYPE_ROM
) {
1184 p
[1] = 0x20; /* Read Retry Count */
1188 case MODE_PAGE_AUDIO_CTL
:
1192 case MODE_PAGE_CAPABILITIES
:
1194 if (page_control
== 1) { /* Changeable Values */
1198 p
[0] = 0x3b; /* CD-R & CD-RW read */
1199 p
[1] = 0; /* Writing not supported */
1200 p
[2] = 0x7f; /* Audio, composite, digital out,
1201 mode 2 form 1&2, multi session */
1202 p
[3] = 0xff; /* CD DA, DA accurate, RW supported,
1203 RW corrected, C2 errors, ISRC,
1205 p
[4] = 0x2d | (s
->tray_locked
? 2 : 0);
1206 /* Locking supported, jumper present, eject, tray */
1207 p
[5] = 0; /* no volume & mute control, no
1209 p
[6] = (50 * 176) >> 8; /* 50x read speed */
1210 p
[7] = (50 * 176) & 0xff;
1211 p
[8] = 2 >> 8; /* Two volume levels */
1213 p
[10] = 2048 >> 8; /* 2M buffer */
1214 p
[11] = 2048 & 0xff;
1215 p
[12] = (16 * 176) >> 8; /* 16x read speed current */
1216 p
[13] = (16 * 176) & 0xff;
1217 p
[16] = (16 * 176) >> 8; /* 16x write speed */
1218 p
[17] = (16 * 176) & 0xff;
1219 p
[18] = (16 * 176) >> 8; /* 16x write speed current */
1220 p
[19] = (16 * 176) & 0xff;
1227 assert(length
< 256);
1228 (*p_outbuf
)[0] = page
;
1229 (*p_outbuf
)[1] = length
;
1230 *p_outbuf
+= length
+ 2;
1234 static int scsi_disk_emulate_mode_sense(SCSIDiskReq
*r
, uint8_t *outbuf
)
1236 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1237 uint64_t nb_sectors
;
1239 int page
, buflen
, ret
, page_control
;
1241 uint8_t dev_specific_param
;
1243 dbd
= (r
->req
.cmd
.buf
[1] & 0x8) != 0;
1244 page
= r
->req
.cmd
.buf
[2] & 0x3f;
1245 page_control
= (r
->req
.cmd
.buf
[2] & 0xc0) >> 6;
1246 DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
1247 (r
->req
.cmd
.buf
[0] == MODE_SENSE
) ? 6 : 10, page
, r
->req
.cmd
.xfer
, page_control
);
1248 memset(outbuf
, 0, r
->req
.cmd
.xfer
);
1251 if (s
->qdev
.type
== TYPE_DISK
) {
1252 dev_specific_param
= s
->features
& (1 << SCSI_DISK_F_DPOFUA
) ? 0x10 : 0;
1253 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1254 dev_specific_param
|= 0x80; /* Readonly. */
1257 /* MMC prescribes that CD/DVD drives have no block descriptors,
1258 * and defines no device-specific parameter. */
1259 dev_specific_param
= 0x00;
1263 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1264 p
[1] = 0; /* Default media type. */
1265 p
[2] = dev_specific_param
;
1266 p
[3] = 0; /* Block descriptor length. */
1268 } else { /* MODE_SENSE_10 */
1269 p
[2] = 0; /* Default media type. */
1270 p
[3] = dev_specific_param
;
1271 p
[6] = p
[7] = 0; /* Block descriptor length. */
1275 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1276 if (!dbd
&& nb_sectors
) {
1277 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1278 outbuf
[3] = 8; /* Block descriptor length */
1279 } else { /* MODE_SENSE_10 */
1280 outbuf
[7] = 8; /* Block descriptor length */
1282 nb_sectors
/= (s
->qdev
.blocksize
/ 512);
1283 if (nb_sectors
> 0xffffff) {
1286 p
[0] = 0; /* media density code */
1287 p
[1] = (nb_sectors
>> 16) & 0xff;
1288 p
[2] = (nb_sectors
>> 8) & 0xff;
1289 p
[3] = nb_sectors
& 0xff;
1290 p
[4] = 0; /* reserved */
1291 p
[5] = 0; /* bytes 5-7 are the sector size in bytes */
1292 p
[6] = s
->qdev
.blocksize
>> 8;
1297 if (page_control
== 3) {
1299 scsi_check_condition(r
, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED
));
1304 for (page
= 0; page
<= 0x3e; page
++) {
1305 mode_sense_page(s
, page
, &p
, page_control
);
1308 ret
= mode_sense_page(s
, page
, &p
, page_control
);
1314 buflen
= p
- outbuf
;
1316 * The mode data length field specifies the length in bytes of the
1317 * following data that is available to be transferred. The mode data
1318 * length does not include itself.
1320 if (r
->req
.cmd
.buf
[0] == MODE_SENSE
) {
1321 outbuf
[0] = buflen
- 1;
1322 } else { /* MODE_SENSE_10 */
1323 outbuf
[0] = ((buflen
- 2) >> 8) & 0xff;
1324 outbuf
[1] = (buflen
- 2) & 0xff;
1329 static int scsi_disk_emulate_read_toc(SCSIRequest
*req
, uint8_t *outbuf
)
1331 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1332 int start_track
, format
, msf
, toclen
;
1333 uint64_t nb_sectors
;
1335 msf
= req
->cmd
.buf
[1] & 2;
1336 format
= req
->cmd
.buf
[2] & 0xf;
1337 start_track
= req
->cmd
.buf
[6];
1338 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1339 DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track
, format
, msf
>> 1);
1340 nb_sectors
/= s
->qdev
.blocksize
/ 512;
1343 toclen
= cdrom_read_toc(nb_sectors
, outbuf
, msf
, start_track
);
1346 /* multi session : only a single session defined */
1348 memset(outbuf
, 0, 12);
1354 toclen
= cdrom_read_toc_raw(nb_sectors
, outbuf
, msf
, start_track
);
1362 static int scsi_disk_emulate_start_stop(SCSIDiskReq
*r
)
1364 SCSIRequest
*req
= &r
->req
;
1365 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1366 bool start
= req
->cmd
.buf
[4] & 1;
1367 bool loej
= req
->cmd
.buf
[4] & 2; /* load on start, eject on !start */
1368 int pwrcnd
= req
->cmd
.buf
[4] & 0xf0;
1371 /* eject/load only happens for power condition == 0 */
1375 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) && loej
) {
1376 if (!start
&& !s
->tray_open
&& s
->tray_locked
) {
1377 scsi_check_condition(r
,
1378 blk_is_inserted(s
->qdev
.conf
.blk
)
1379 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED
)
1380 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED
));
1384 if (s
->tray_open
!= !start
) {
1385 blk_eject(s
->qdev
.conf
.blk
, !start
);
1386 s
->tray_open
= !start
;
1392 static void scsi_disk_emulate_read_data(SCSIRequest
*req
)
1394 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1395 int buflen
= r
->iov
.iov_len
;
1398 DPRINTF("Read buf_len=%d\n", buflen
);
1401 scsi_req_data(&r
->req
, buflen
);
1405 /* This also clears the sense buffer for REQUEST SENSE. */
1406 scsi_req_complete(&r
->req
, GOOD
);
1409 static int scsi_disk_check_mode_select(SCSIDiskState
*s
, int page
,
1410 uint8_t *inbuf
, int inlen
)
1412 uint8_t mode_current
[SCSI_MAX_MODE_LEN
];
1413 uint8_t mode_changeable
[SCSI_MAX_MODE_LEN
];
1415 int len
, expected_len
, changeable_len
, i
;
1417 /* The input buffer does not include the page header, so it is
1420 expected_len
= inlen
+ 2;
1421 if (expected_len
> SCSI_MAX_MODE_LEN
) {
1426 memset(mode_current
, 0, inlen
+ 2);
1427 len
= mode_sense_page(s
, page
, &p
, 0);
1428 if (len
< 0 || len
!= expected_len
) {
1432 p
= mode_changeable
;
1433 memset(mode_changeable
, 0, inlen
+ 2);
1434 changeable_len
= mode_sense_page(s
, page
, &p
, 1);
1435 assert(changeable_len
== len
);
1437 /* Check that unchangeable bits are the same as what MODE SENSE
1440 for (i
= 2; i
< len
; i
++) {
1441 if (((mode_current
[i
] ^ inbuf
[i
- 2]) & ~mode_changeable
[i
]) != 0) {
1448 static void scsi_disk_apply_mode_select(SCSIDiskState
*s
, int page
, uint8_t *p
)
1451 case MODE_PAGE_CACHING
:
1452 blk_set_enable_write_cache(s
->qdev
.conf
.blk
, (p
[0] & 4) != 0);
1460 static int mode_select_pages(SCSIDiskReq
*r
, uint8_t *p
, int len
, bool change
)
1462 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1465 int page
, subpage
, page_len
;
1467 /* Parse both possible formats for the mode page headers. */
1471 goto invalid_param_len
;
1474 page_len
= lduw_be_p(&p
[2]);
1479 goto invalid_param_len
;
1490 if (page_len
> len
) {
1491 goto invalid_param_len
;
1495 if (scsi_disk_check_mode_select(s
, page
, p
, page_len
) < 0) {
1499 scsi_disk_apply_mode_select(s
, page
, p
);
1508 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1512 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1516 static void scsi_disk_emulate_mode_select(SCSIDiskReq
*r
, uint8_t *inbuf
)
1518 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1520 int cmd
= r
->req
.cmd
.buf
[0];
1521 int len
= r
->req
.cmd
.xfer
;
1522 int hdr_len
= (cmd
== MODE_SELECT
? 4 : 8);
1526 /* We only support PF=1, SP=0. */
1527 if ((r
->req
.cmd
.buf
[1] & 0x11) != 0x10) {
1531 if (len
< hdr_len
) {
1532 goto invalid_param_len
;
1535 bd_len
= (cmd
== MODE_SELECT
? p
[3] : lduw_be_p(&p
[6]));
1539 goto invalid_param_len
;
1541 if (bd_len
!= 0 && bd_len
!= 8) {
1548 /* Ensure no change is made if there is an error! */
1549 for (pass
= 0; pass
< 2; pass
++) {
1550 if (mode_select_pages(r
, p
, len
, pass
== 1) < 0) {
1555 if (!blk_enable_write_cache(s
->qdev
.conf
.blk
)) {
1556 /* The request is used as the AIO opaque value, so add a ref. */
1557 scsi_req_ref(&r
->req
);
1558 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
1560 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
1564 scsi_req_complete(&r
->req
, GOOD
);
1568 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM
));
1572 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1576 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1579 static inline bool check_lba_range(SCSIDiskState
*s
,
1580 uint64_t sector_num
, uint32_t nb_sectors
)
1583 * The first line tests that no overflow happens when computing the last
1584 * sector. The second line tests that the last accessed sector is in
1587 * Careful, the computations should not underflow for nb_sectors == 0,
1588 * and a 0-block read to the first LBA beyond the end of device is
1591 return (sector_num
<= sector_num
+ nb_sectors
&&
1592 sector_num
+ nb_sectors
<= s
->qdev
.max_lba
+ 1);
1595 typedef struct UnmapCBData
{
1601 static void scsi_unmap_complete(void *opaque
, int ret
);
1603 static void scsi_unmap_complete_noio(UnmapCBData
*data
, int ret
)
1605 SCSIDiskReq
*r
= data
->r
;
1606 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1607 uint64_t sector_num
;
1608 uint32_t nb_sectors
;
1610 assert(r
->req
.aiocb
== NULL
);
1611 if (scsi_disk_req_check_error(r
, ret
, false)) {
1615 if (data
->count
> 0) {
1616 sector_num
= ldq_be_p(&data
->inbuf
[0]);
1617 nb_sectors
= ldl_be_p(&data
->inbuf
[8]) & 0xffffffffULL
;
1618 if (!check_lba_range(s
, sector_num
, nb_sectors
)) {
1619 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1623 r
->req
.aiocb
= blk_aio_pdiscard(s
->qdev
.conf
.blk
,
1624 sector_num
* s
->qdev
.blocksize
,
1625 nb_sectors
* s
->qdev
.blocksize
,
1626 scsi_unmap_complete
, data
);
1632 scsi_req_complete(&r
->req
, GOOD
);
1635 scsi_req_unref(&r
->req
);
1639 static void scsi_unmap_complete(void *opaque
, int ret
)
1641 UnmapCBData
*data
= opaque
;
1642 SCSIDiskReq
*r
= data
->r
;
1643 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1645 assert(r
->req
.aiocb
!= NULL
);
1646 r
->req
.aiocb
= NULL
;
1648 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1649 scsi_unmap_complete_noio(data
, ret
);
1650 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1653 static void scsi_disk_emulate_unmap(SCSIDiskReq
*r
, uint8_t *inbuf
)
1655 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1657 int len
= r
->req
.cmd
.xfer
;
1660 /* Reject ANCHOR=1. */
1661 if (r
->req
.cmd
.buf
[1] & 0x1) {
1666 goto invalid_param_len
;
1668 if (len
< lduw_be_p(&p
[0]) + 2) {
1669 goto invalid_param_len
;
1671 if (len
< lduw_be_p(&p
[2]) + 8) {
1672 goto invalid_param_len
;
1674 if (lduw_be_p(&p
[2]) & 15) {
1675 goto invalid_param_len
;
1678 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1679 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1683 data
= g_new0(UnmapCBData
, 1);
1685 data
->inbuf
= &p
[8];
1686 data
->count
= lduw_be_p(&p
[2]) >> 4;
1688 /* The matching unref is in scsi_unmap_complete, before data is freed. */
1689 scsi_req_ref(&r
->req
);
1690 scsi_unmap_complete_noio(data
, 0);
1694 scsi_check_condition(r
, SENSE_CODE(INVALID_PARAM_LEN
));
1698 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1701 typedef struct WriteSameCBData
{
1709 static void scsi_write_same_complete(void *opaque
, int ret
)
1711 WriteSameCBData
*data
= opaque
;
1712 SCSIDiskReq
*r
= data
->r
;
1713 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
1715 assert(r
->req
.aiocb
!= NULL
);
1716 r
->req
.aiocb
= NULL
;
1717 aio_context_acquire(blk_get_aio_context(s
->qdev
.conf
.blk
));
1718 if (scsi_disk_req_check_error(r
, ret
, true)) {
1722 block_acct_done(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
);
1724 data
->nb_sectors
-= data
->iov
.iov_len
/ 512;
1725 data
->sector
+= data
->iov
.iov_len
/ 512;
1726 data
->iov
.iov_len
= MIN(data
->nb_sectors
* 512, data
->iov
.iov_len
);
1727 if (data
->iov
.iov_len
) {
1728 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1729 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1730 /* Reinitialize qiov, to handle unaligned WRITE SAME request
1731 * where final qiov may need smaller size */
1732 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1733 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1734 data
->sector
<< BDRV_SECTOR_BITS
,
1736 scsi_write_same_complete
, data
);
1737 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1741 scsi_req_complete(&r
->req
, GOOD
);
1744 scsi_req_unref(&r
->req
);
1745 qemu_vfree(data
->iov
.iov_base
);
1747 aio_context_release(blk_get_aio_context(s
->qdev
.conf
.blk
));
1750 static void scsi_disk_emulate_write_same(SCSIDiskReq
*r
, uint8_t *inbuf
)
1752 SCSIRequest
*req
= &r
->req
;
1753 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1754 uint32_t nb_sectors
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
1755 WriteSameCBData
*data
;
1759 /* Fail if PBDATA=1 or LBDATA=1 or ANCHOR=1. */
1760 if (nb_sectors
== 0 || (req
->cmd
.buf
[1] & 0x16)) {
1761 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1765 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
1766 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
1769 if (!check_lba_range(s
, r
->req
.cmd
.lba
, nb_sectors
)) {
1770 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
1774 if ((req
->cmd
.buf
[1] & 0x1) || buffer_is_zero(inbuf
, s
->qdev
.blocksize
)) {
1775 int flags
= (req
->cmd
.buf
[1] & 0x8) ? BDRV_REQ_MAY_UNMAP
: 0;
1777 /* The request is used as the AIO opaque value, so add a ref. */
1778 scsi_req_ref(&r
->req
);
1779 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1780 nb_sectors
* s
->qdev
.blocksize
,
1782 r
->req
.aiocb
= blk_aio_pwrite_zeroes(s
->qdev
.conf
.blk
,
1783 r
->req
.cmd
.lba
* s
->qdev
.blocksize
,
1784 nb_sectors
* s
->qdev
.blocksize
,
1785 flags
, scsi_aio_complete
, r
);
1789 data
= g_new0(WriteSameCBData
, 1);
1791 data
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ 512);
1792 data
->nb_sectors
= nb_sectors
* (s
->qdev
.blocksize
/ 512);
1793 data
->iov
.iov_len
= MIN(data
->nb_sectors
* 512, SCSI_WRITE_SAME_MAX
);
1794 data
->iov
.iov_base
= buf
= blk_blockalign(s
->qdev
.conf
.blk
,
1796 qemu_iovec_init_external(&data
->qiov
, &data
->iov
, 1);
1798 for (i
= 0; i
< data
->iov
.iov_len
; i
+= s
->qdev
.blocksize
) {
1799 memcpy(&buf
[i
], inbuf
, s
->qdev
.blocksize
);
1802 scsi_req_ref(&r
->req
);
1803 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
,
1804 data
->iov
.iov_len
, BLOCK_ACCT_WRITE
);
1805 r
->req
.aiocb
= blk_aio_pwritev(s
->qdev
.conf
.blk
,
1806 data
->sector
<< BDRV_SECTOR_BITS
,
1808 scsi_write_same_complete
, data
);
1811 static void scsi_disk_emulate_write_data(SCSIRequest
*req
)
1813 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1815 if (r
->iov
.iov_len
) {
1816 int buflen
= r
->iov
.iov_len
;
1817 DPRINTF("Write buf_len=%d\n", buflen
);
1819 scsi_req_data(&r
->req
, buflen
);
1823 switch (req
->cmd
.buf
[0]) {
1825 case MODE_SELECT_10
:
1826 /* This also clears the sense buffer for REQUEST SENSE. */
1827 scsi_disk_emulate_mode_select(r
, r
->iov
.iov_base
);
1831 scsi_disk_emulate_unmap(r
, r
->iov
.iov_base
);
1837 if (r
->req
.status
== -1) {
1838 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
1844 scsi_disk_emulate_write_same(r
, r
->iov
.iov_base
);
1852 static int32_t scsi_disk_emulate_command(SCSIRequest
*req
, uint8_t *buf
)
1854 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
1855 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
1856 uint64_t nb_sectors
;
1860 switch (req
->cmd
.buf
[0]) {
1869 case ALLOW_MEDIUM_REMOVAL
:
1870 case GET_CONFIGURATION
:
1871 case GET_EVENT_STATUS_NOTIFICATION
:
1872 case MECHANISM_STATUS
:
1877 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
1878 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
1885 * FIXME: we shouldn't return anything bigger than 4k, but the code
1886 * requires the buffer to be as big as req->cmd.xfer in several
1887 * places. So, do not allow CDBs with a very large ALLOCATION
1888 * LENGTH. The real fix would be to modify scsi_read_data and
1889 * dma_buf_read, so that they return data beyond the buflen
1892 if (req
->cmd
.xfer
> 65536) {
1893 goto illegal_request
;
1895 r
->buflen
= MAX(4096, req
->cmd
.xfer
);
1897 if (!r
->iov
.iov_base
) {
1898 r
->iov
.iov_base
= blk_blockalign(s
->qdev
.conf
.blk
, r
->buflen
);
1901 buflen
= req
->cmd
.xfer
;
1902 outbuf
= r
->iov
.iov_base
;
1903 memset(outbuf
, 0, r
->buflen
);
1904 switch (req
->cmd
.buf
[0]) {
1905 case TEST_UNIT_READY
:
1906 assert(blk_is_available(s
->qdev
.conf
.blk
));
1909 buflen
= scsi_disk_emulate_inquiry(req
, outbuf
);
1911 goto illegal_request
;
1916 buflen
= scsi_disk_emulate_mode_sense(r
, outbuf
);
1918 goto illegal_request
;
1922 buflen
= scsi_disk_emulate_read_toc(req
, outbuf
);
1924 goto illegal_request
;
1928 if (req
->cmd
.buf
[1] & 1) {
1929 goto illegal_request
;
1933 if (req
->cmd
.buf
[1] & 3) {
1934 goto illegal_request
;
1938 if (req
->cmd
.buf
[1] & 1) {
1939 goto illegal_request
;
1943 if (req
->cmd
.buf
[1] & 3) {
1944 goto illegal_request
;
1948 if (scsi_disk_emulate_start_stop(r
) < 0) {
1952 case ALLOW_MEDIUM_REMOVAL
:
1953 s
->tray_locked
= req
->cmd
.buf
[4] & 1;
1954 blk_lock_medium(s
->qdev
.conf
.blk
, req
->cmd
.buf
[4] & 1);
1956 case READ_CAPACITY_10
:
1957 /* The normal LEN field for this command is zero. */
1958 memset(outbuf
, 0, 8);
1959 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
1961 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
1964 if ((req
->cmd
.buf
[8] & 1) == 0 && req
->cmd
.lba
) {
1965 goto illegal_request
;
1967 nb_sectors
/= s
->qdev
.blocksize
/ 512;
1968 /* Returned value is the address of the last sector. */
1970 /* Remember the new size for read/write sanity checking. */
1971 s
->qdev
.max_lba
= nb_sectors
;
1972 /* Clip to 2TB, instead of returning capacity modulo 2TB. */
1973 if (nb_sectors
> UINT32_MAX
) {
1974 nb_sectors
= UINT32_MAX
;
1976 outbuf
[0] = (nb_sectors
>> 24) & 0xff;
1977 outbuf
[1] = (nb_sectors
>> 16) & 0xff;
1978 outbuf
[2] = (nb_sectors
>> 8) & 0xff;
1979 outbuf
[3] = nb_sectors
& 0xff;
1982 outbuf
[6] = s
->qdev
.blocksize
>> 8;
1986 /* Just return "NO SENSE". */
1987 buflen
= scsi_convert_sense(NULL
, 0, outbuf
, r
->buflen
,
1988 (req
->cmd
.buf
[1] & 1) == 0);
1990 goto illegal_request
;
1993 case MECHANISM_STATUS
:
1994 buflen
= scsi_emulate_mechanism_status(s
, outbuf
);
1996 goto illegal_request
;
1999 case GET_CONFIGURATION
:
2000 buflen
= scsi_get_configuration(s
, outbuf
);
2002 goto illegal_request
;
2005 case GET_EVENT_STATUS_NOTIFICATION
:
2006 buflen
= scsi_get_event_status_notification(s
, r
, outbuf
);
2008 goto illegal_request
;
2011 case READ_DISC_INFORMATION
:
2012 buflen
= scsi_read_disc_information(s
, r
, outbuf
);
2014 goto illegal_request
;
2017 case READ_DVD_STRUCTURE
:
2018 buflen
= scsi_read_dvd_structure(s
, r
, outbuf
);
2020 goto illegal_request
;
2023 case SERVICE_ACTION_IN_16
:
2024 /* Service Action In subcommands. */
2025 if ((req
->cmd
.buf
[1] & 31) == SAI_READ_CAPACITY_16
) {
2026 DPRINTF("SAI READ CAPACITY(16)\n");
2027 memset(outbuf
, 0, req
->cmd
.xfer
);
2028 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2030 scsi_check_condition(r
, SENSE_CODE(LUN_NOT_READY
));
2033 if ((req
->cmd
.buf
[14] & 1) == 0 && req
->cmd
.lba
) {
2034 goto illegal_request
;
2036 nb_sectors
/= s
->qdev
.blocksize
/ 512;
2037 /* Returned value is the address of the last sector. */
2039 /* Remember the new size for read/write sanity checking. */
2040 s
->qdev
.max_lba
= nb_sectors
;
2041 outbuf
[0] = (nb_sectors
>> 56) & 0xff;
2042 outbuf
[1] = (nb_sectors
>> 48) & 0xff;
2043 outbuf
[2] = (nb_sectors
>> 40) & 0xff;
2044 outbuf
[3] = (nb_sectors
>> 32) & 0xff;
2045 outbuf
[4] = (nb_sectors
>> 24) & 0xff;
2046 outbuf
[5] = (nb_sectors
>> 16) & 0xff;
2047 outbuf
[6] = (nb_sectors
>> 8) & 0xff;
2048 outbuf
[7] = nb_sectors
& 0xff;
2051 outbuf
[10] = s
->qdev
.blocksize
>> 8;
2054 outbuf
[13] = get_physical_block_exp(&s
->qdev
.conf
);
2056 /* set TPE bit if the format supports discard */
2057 if (s
->qdev
.conf
.discard_granularity
) {
2061 /* Protection, exponent and lowest lba field left blank. */
2064 DPRINTF("Unsupported Service Action In\n");
2065 goto illegal_request
;
2066 case SYNCHRONIZE_CACHE
:
2067 /* The request is used as the AIO opaque value, so add a ref. */
2068 scsi_req_ref(&r
->req
);
2069 block_acct_start(blk_get_stats(s
->qdev
.conf
.blk
), &r
->acct
, 0,
2071 r
->req
.aiocb
= blk_aio_flush(s
->qdev
.conf
.blk
, scsi_aio_complete
, r
);
2074 DPRINTF("Seek(10) (sector %" PRId64
")\n", r
->req
.cmd
.lba
);
2075 if (r
->req
.cmd
.lba
> s
->qdev
.max_lba
) {
2080 DPRINTF("Mode Select(6) (len %lu)\n", (unsigned long)r
->req
.cmd
.xfer
);
2082 case MODE_SELECT_10
:
2083 DPRINTF("Mode Select(10) (len %lu)\n", (unsigned long)r
->req
.cmd
.xfer
);
2086 DPRINTF("Unmap (len %lu)\n", (unsigned long)r
->req
.cmd
.xfer
);
2091 DPRINTF("Verify (bytchk %d)\n", (req
->cmd
.buf
[1] >> 1) & 3);
2092 if (req
->cmd
.buf
[1] & 6) {
2093 goto illegal_request
;
2098 DPRINTF("WRITE SAME %d (len %lu)\n",
2099 req
->cmd
.buf
[0] == WRITE_SAME_10
? 10 : 16,
2100 (unsigned long)r
->req
.cmd
.xfer
);
2103 DPRINTF("Unknown SCSI command (%2.2x=%s)\n", buf
[0],
2104 scsi_command_name(buf
[0]));
2105 scsi_check_condition(r
, SENSE_CODE(INVALID_OPCODE
));
2108 assert(!r
->req
.aiocb
);
2109 r
->iov
.iov_len
= MIN(r
->buflen
, req
->cmd
.xfer
);
2110 if (r
->iov
.iov_len
== 0) {
2111 scsi_req_complete(&r
->req
, GOOD
);
2113 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2114 assert(r
->iov
.iov_len
== req
->cmd
.xfer
);
2115 return -r
->iov
.iov_len
;
2117 return r
->iov
.iov_len
;
2121 if (r
->req
.status
== -1) {
2122 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2127 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2131 /* Execute a scsi command. Returns the length of the data expected by the
2132 command. This will be Positive for data transfers from the device
2133 (eg. disk reads), negative for transfers to the device (eg. disk writes),
2134 and zero if the command does not transfer any data. */
2136 static int32_t scsi_disk_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2138 SCSIDiskReq
*r
= DO_UPCAST(SCSIDiskReq
, req
, req
);
2139 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2140 SCSIDiskClass
*sdc
= (SCSIDiskClass
*) object_get_class(OBJECT(s
));
2146 if (!blk_is_available(s
->qdev
.conf
.blk
)) {
2147 scsi_check_condition(r
, SENSE_CODE(NO_MEDIUM
));
2151 len
= scsi_data_cdb_xfer(r
->req
.cmd
.buf
);
2157 DPRINTF("Read (sector %" PRId64
", count %u)\n", r
->req
.cmd
.lba
, len
);
2158 /* Protection information is not supported. For SCSI versions 2 and
2159 * older (as determined by snooping the guest's INQUIRY commands),
2160 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2162 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2163 goto illegal_request
;
2165 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2168 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ 512);
2169 r
->sector_count
= len
* (s
->qdev
.blocksize
/ 512);
2175 case WRITE_VERIFY_10
:
2176 case WRITE_VERIFY_12
:
2177 case WRITE_VERIFY_16
:
2178 if (blk_is_read_only(s
->qdev
.conf
.blk
)) {
2179 scsi_check_condition(r
, SENSE_CODE(WRITE_PROTECTED
));
2182 DPRINTF("Write %s(sector %" PRId64
", count %u)\n",
2183 (command
& 0xe) == 0xe ? "And Verify " : "",
2184 r
->req
.cmd
.lba
, len
);
2189 /* We get here only for BYTCHK == 0x01 and only for scsi-block.
2190 * As far as DMA is concerned, we can treat it the same as a write;
2191 * scsi_block_do_sgio will send VERIFY commands.
2193 if (s
->qdev
.scsi_version
> 2 && (r
->req
.cmd
.buf
[1] & 0xe0)) {
2194 goto illegal_request
;
2196 if (!check_lba_range(s
, r
->req
.cmd
.lba
, len
)) {
2199 r
->sector
= r
->req
.cmd
.lba
* (s
->qdev
.blocksize
/ 512);
2200 r
->sector_count
= len
* (s
->qdev
.blocksize
/ 512);
2205 scsi_check_condition(r
, SENSE_CODE(INVALID_FIELD
));
2208 scsi_check_condition(r
, SENSE_CODE(LBA_OUT_OF_RANGE
));
2211 r
->need_fua_emulation
= sdc
->need_fua_emulation(&r
->req
.cmd
);
2212 if (r
->sector_count
== 0) {
2213 scsi_req_complete(&r
->req
, GOOD
);
2215 assert(r
->iov
.iov_len
== 0);
2216 if (r
->req
.cmd
.mode
== SCSI_XFER_TO_DEV
) {
2217 return -r
->sector_count
* 512;
2219 return r
->sector_count
* 512;
2223 static void scsi_disk_reset(DeviceState
*dev
)
2225 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
.qdev
, dev
);
2226 uint64_t nb_sectors
;
2228 scsi_device_purge_requests(&s
->qdev
, SENSE_CODE(RESET
));
2230 blk_get_geometry(s
->qdev
.conf
.blk
, &nb_sectors
);
2231 nb_sectors
/= s
->qdev
.blocksize
/ 512;
2235 s
->qdev
.max_lba
= nb_sectors
;
2236 /* reset tray statuses */
2240 s
->qdev
.scsi_version
= s
->qdev
.default_scsi_version
;
2243 static void scsi_disk_resize_cb(void *opaque
)
2245 SCSIDiskState
*s
= opaque
;
2247 /* SPC lists this sense code as available only for
2248 * direct-access devices.
2250 if (s
->qdev
.type
== TYPE_DISK
) {
2251 scsi_device_report_change(&s
->qdev
, SENSE_CODE(CAPACITY_CHANGED
));
2255 static void scsi_cd_change_media_cb(void *opaque
, bool load
, Error
**errp
)
2257 SCSIDiskState
*s
= opaque
;
2260 * When a CD gets changed, we have to report an ejected state and
2261 * then a loaded state to guests so that they detect tray
2262 * open/close and media change events. Guests that do not use
2263 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
2264 * states rely on this behavior.
2266 * media_changed governs the state machine used for unit attention
2267 * report. media_event is used by GET EVENT STATUS NOTIFICATION.
2269 s
->media_changed
= load
;
2270 s
->tray_open
= !load
;
2271 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM
));
2272 s
->media_event
= true;
2273 s
->eject_request
= false;
2276 static void scsi_cd_eject_request_cb(void *opaque
, bool force
)
2278 SCSIDiskState
*s
= opaque
;
2280 s
->eject_request
= true;
2282 s
->tray_locked
= false;
2286 static bool scsi_cd_is_tray_open(void *opaque
)
2288 return ((SCSIDiskState
*)opaque
)->tray_open
;
2291 static bool scsi_cd_is_medium_locked(void *opaque
)
2293 return ((SCSIDiskState
*)opaque
)->tray_locked
;
2296 static const BlockDevOps scsi_disk_removable_block_ops
= {
2297 .change_media_cb
= scsi_cd_change_media_cb
,
2298 .eject_request_cb
= scsi_cd_eject_request_cb
,
2299 .is_tray_open
= scsi_cd_is_tray_open
,
2300 .is_medium_locked
= scsi_cd_is_medium_locked
,
2302 .resize_cb
= scsi_disk_resize_cb
,
2305 static const BlockDevOps scsi_disk_block_ops
= {
2306 .resize_cb
= scsi_disk_resize_cb
,
2309 static void scsi_disk_unit_attention_reported(SCSIDevice
*dev
)
2311 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2312 if (s
->media_changed
) {
2313 s
->media_changed
= false;
2314 scsi_device_set_ua(&s
->qdev
, SENSE_CODE(MEDIUM_CHANGED
));
2318 static void scsi_realize(SCSIDevice
*dev
, Error
**errp
)
2320 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2322 if (!s
->qdev
.conf
.blk
) {
2323 error_setg(errp
, "drive property not set");
2327 if (!(s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2328 !blk_is_inserted(s
->qdev
.conf
.blk
)) {
2329 error_setg(errp
, "Device needs media, but drive is empty");
2333 blkconf_blocksizes(&s
->qdev
.conf
);
2335 if (s
->qdev
.conf
.logical_block_size
>
2336 s
->qdev
.conf
.physical_block_size
) {
2338 "logical_block_size > physical_block_size not supported");
2342 if (dev
->type
== TYPE_DISK
) {
2343 if (!blkconf_geometry(&dev
->conf
, NULL
, 65535, 255, 255, errp
)) {
2347 if (!blkconf_apply_backend_options(&dev
->conf
,
2348 blk_is_read_only(s
->qdev
.conf
.blk
),
2349 dev
->type
== TYPE_DISK
, errp
)) {
2353 if (s
->qdev
.conf
.discard_granularity
== -1) {
2354 s
->qdev
.conf
.discard_granularity
=
2355 MAX(s
->qdev
.conf
.logical_block_size
, DEFAULT_DISCARD_GRANULARITY
);
2359 s
->version
= g_strdup(qemu_hw_version());
2362 s
->vendor
= g_strdup("QEMU");
2365 if (blk_is_sg(s
->qdev
.conf
.blk
)) {
2366 error_setg(errp
, "unwanted /dev/sg*");
2370 if ((s
->features
& (1 << SCSI_DISK_F_REMOVABLE
)) &&
2371 !(s
->features
& (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
))) {
2372 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_removable_block_ops
, s
);
2374 blk_set_dev_ops(s
->qdev
.conf
.blk
, &scsi_disk_block_ops
, s
);
2376 blk_set_guest_block_size(s
->qdev
.conf
.blk
, s
->qdev
.blocksize
);
2378 blk_iostatus_enable(s
->qdev
.conf
.blk
);
2381 static void scsi_hd_realize(SCSIDevice
*dev
, Error
**errp
)
2383 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2384 /* can happen for devices without drive. The error message for missing
2385 * backend will be issued in scsi_realize
2387 if (s
->qdev
.conf
.blk
) {
2388 blkconf_blocksizes(&s
->qdev
.conf
);
2390 s
->qdev
.blocksize
= s
->qdev
.conf
.logical_block_size
;
2391 s
->qdev
.type
= TYPE_DISK
;
2393 s
->product
= g_strdup("QEMU HARDDISK");
2395 scsi_realize(&s
->qdev
, errp
);
2398 static void scsi_cd_realize(SCSIDevice
*dev
, Error
**errp
)
2400 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2403 if (!dev
->conf
.blk
) {
2404 /* Anonymous BlockBackend for an empty drive. As we put it into
2405 * dev->conf, qdev takes care of detaching on unplug. */
2406 dev
->conf
.blk
= blk_new(0, BLK_PERM_ALL
);
2407 ret
= blk_attach_dev(dev
->conf
.blk
, &dev
->qdev
);
2411 s
->qdev
.blocksize
= 2048;
2412 s
->qdev
.type
= TYPE_ROM
;
2413 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2415 s
->product
= g_strdup("QEMU CD-ROM");
2417 scsi_realize(&s
->qdev
, errp
);
2420 static void scsi_disk_realize(SCSIDevice
*dev
, Error
**errp
)
2423 Error
*local_err
= NULL
;
2425 if (!dev
->conf
.blk
) {
2426 scsi_realize(dev
, &local_err
);
2428 error_propagate(errp
, local_err
);
2432 dinfo
= blk_legacy_dinfo(dev
->conf
.blk
);
2433 if (dinfo
&& dinfo
->media_cd
) {
2434 scsi_cd_realize(dev
, errp
);
2436 scsi_hd_realize(dev
, errp
);
2440 static const SCSIReqOps scsi_disk_emulate_reqops
= {
2441 .size
= sizeof(SCSIDiskReq
),
2442 .free_req
= scsi_free_request
,
2443 .send_command
= scsi_disk_emulate_command
,
2444 .read_data
= scsi_disk_emulate_read_data
,
2445 .write_data
= scsi_disk_emulate_write_data
,
2446 .get_buf
= scsi_get_buf
,
2449 static const SCSIReqOps scsi_disk_dma_reqops
= {
2450 .size
= sizeof(SCSIDiskReq
),
2451 .free_req
= scsi_free_request
,
2452 .send_command
= scsi_disk_dma_command
,
2453 .read_data
= scsi_read_data
,
2454 .write_data
= scsi_write_data
,
2455 .get_buf
= scsi_get_buf
,
2456 .load_request
= scsi_disk_load_request
,
2457 .save_request
= scsi_disk_save_request
,
2460 static const SCSIReqOps
*const scsi_disk_reqops_dispatch
[256] = {
2461 [TEST_UNIT_READY
] = &scsi_disk_emulate_reqops
,
2462 [INQUIRY
] = &scsi_disk_emulate_reqops
,
2463 [MODE_SENSE
] = &scsi_disk_emulate_reqops
,
2464 [MODE_SENSE_10
] = &scsi_disk_emulate_reqops
,
2465 [START_STOP
] = &scsi_disk_emulate_reqops
,
2466 [ALLOW_MEDIUM_REMOVAL
] = &scsi_disk_emulate_reqops
,
2467 [READ_CAPACITY_10
] = &scsi_disk_emulate_reqops
,
2468 [READ_TOC
] = &scsi_disk_emulate_reqops
,
2469 [READ_DVD_STRUCTURE
] = &scsi_disk_emulate_reqops
,
2470 [READ_DISC_INFORMATION
] = &scsi_disk_emulate_reqops
,
2471 [GET_CONFIGURATION
] = &scsi_disk_emulate_reqops
,
2472 [GET_EVENT_STATUS_NOTIFICATION
] = &scsi_disk_emulate_reqops
,
2473 [MECHANISM_STATUS
] = &scsi_disk_emulate_reqops
,
2474 [SERVICE_ACTION_IN_16
] = &scsi_disk_emulate_reqops
,
2475 [REQUEST_SENSE
] = &scsi_disk_emulate_reqops
,
2476 [SYNCHRONIZE_CACHE
] = &scsi_disk_emulate_reqops
,
2477 [SEEK_10
] = &scsi_disk_emulate_reqops
,
2478 [MODE_SELECT
] = &scsi_disk_emulate_reqops
,
2479 [MODE_SELECT_10
] = &scsi_disk_emulate_reqops
,
2480 [UNMAP
] = &scsi_disk_emulate_reqops
,
2481 [WRITE_SAME_10
] = &scsi_disk_emulate_reqops
,
2482 [WRITE_SAME_16
] = &scsi_disk_emulate_reqops
,
2483 [VERIFY_10
] = &scsi_disk_emulate_reqops
,
2484 [VERIFY_12
] = &scsi_disk_emulate_reqops
,
2485 [VERIFY_16
] = &scsi_disk_emulate_reqops
,
2487 [READ_6
] = &scsi_disk_dma_reqops
,
2488 [READ_10
] = &scsi_disk_dma_reqops
,
2489 [READ_12
] = &scsi_disk_dma_reqops
,
2490 [READ_16
] = &scsi_disk_dma_reqops
,
2491 [WRITE_6
] = &scsi_disk_dma_reqops
,
2492 [WRITE_10
] = &scsi_disk_dma_reqops
,
2493 [WRITE_12
] = &scsi_disk_dma_reqops
,
2494 [WRITE_16
] = &scsi_disk_dma_reqops
,
2495 [WRITE_VERIFY_10
] = &scsi_disk_dma_reqops
,
2496 [WRITE_VERIFY_12
] = &scsi_disk_dma_reqops
,
2497 [WRITE_VERIFY_16
] = &scsi_disk_dma_reqops
,
2500 static SCSIRequest
*scsi_new_request(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
2501 uint8_t *buf
, void *hba_private
)
2503 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2505 const SCSIReqOps
*ops
;
2509 ops
= scsi_disk_reqops_dispatch
[command
];
2511 ops
= &scsi_disk_emulate_reqops
;
2513 req
= scsi_req_alloc(ops
, &s
->qdev
, tag
, lun
, hba_private
);
2516 DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun
, tag
, buf
[0]);
2519 for (i
= 1; i
< scsi_cdb_length(buf
); i
++) {
2520 printf(" 0x%02x", buf
[i
]);
2530 static int get_device_type(SCSIDiskState
*s
)
2536 memset(cmd
, 0, sizeof(cmd
));
2537 memset(buf
, 0, sizeof(buf
));
2539 cmd
[4] = sizeof(buf
);
2541 ret
= scsi_SG_IO_FROM_DEV(s
->qdev
.conf
.blk
, cmd
, sizeof(cmd
),
2546 s
->qdev
.type
= buf
[0];
2547 if (buf
[1] & 0x80) {
2548 s
->features
|= 1 << SCSI_DISK_F_REMOVABLE
;
2553 static void scsi_block_realize(SCSIDevice
*dev
, Error
**errp
)
2555 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, dev
);
2559 if (!s
->qdev
.conf
.blk
) {
2560 error_setg(errp
, "drive property not set");
2564 if (s
->rotation_rate
) {
2565 error_report_once("rotation_rate is specified for scsi-block but is "
2566 "not implemented. This option is deprecated and will "
2567 "be removed in a future version");
2570 /* check we are using a driver managing SG_IO (version 3 and after) */
2571 rc
= blk_ioctl(s
->qdev
.conf
.blk
, SG_GET_VERSION_NUM
, &sg_version
);
2573 error_setg_errno(errp
, -rc
, "cannot get SG_IO version number");
2575 error_append_hint(errp
, "Is this a SCSI device?\n");
2579 if (sg_version
< 30000) {
2580 error_setg(errp
, "scsi generic interface too old");
2584 /* get device type from INQUIRY data */
2585 rc
= get_device_type(s
);
2587 error_setg(errp
, "INQUIRY failed");
2591 /* Make a guess for the block size, we'll fix it when the guest sends.
2592 * READ CAPACITY. If they don't, they likely would assume these sizes
2593 * anyway. (TODO: check in /sys).
2595 if (s
->qdev
.type
== TYPE_ROM
|| s
->qdev
.type
== TYPE_WORM
) {
2596 s
->qdev
.blocksize
= 2048;
2598 s
->qdev
.blocksize
= 512;
2601 /* Makes the scsi-block device not removable by using HMP and QMP eject
2604 s
->features
|= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS
);
2606 scsi_realize(&s
->qdev
, errp
);
2607 scsi_generic_read_device_inquiry(&s
->qdev
);
2610 typedef struct SCSIBlockReq
{
2612 sg_io_hdr_t io_header
;
2614 /* Selected bytes of the original CDB, copied into our own CDB. */
2615 uint8_t cmd
, cdb1
, group_number
;
2617 /* CDB passed to SG_IO. */
2621 static BlockAIOCB
*scsi_block_do_sgio(SCSIBlockReq
*req
,
2622 int64_t offset
, QEMUIOVector
*iov
,
2624 BlockCompletionFunc
*cb
, void *opaque
)
2626 sg_io_hdr_t
*io_header
= &req
->io_header
;
2627 SCSIDiskReq
*r
= &req
->req
;
2628 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2629 int nb_logical_blocks
;
2633 /* This is not supported yet. It can only happen if the guest does
2634 * reads and writes that are not aligned to one logical sectors
2635 * _and_ cover multiple MemoryRegions.
2637 assert(offset
% s
->qdev
.blocksize
== 0);
2638 assert(iov
->size
% s
->qdev
.blocksize
== 0);
2640 io_header
->interface_id
= 'S';
2642 /* The data transfer comes from the QEMUIOVector. */
2643 io_header
->dxfer_direction
= direction
;
2644 io_header
->dxfer_len
= iov
->size
;
2645 io_header
->dxferp
= (void *)iov
->iov
;
2646 io_header
->iovec_count
= iov
->niov
;
2647 assert(io_header
->iovec_count
== iov
->niov
); /* no overflow! */
2649 /* Build a new CDB with the LBA and length patched in, in case
2650 * DMA helpers split the transfer in multiple segments. Do not
2651 * build a CDB smaller than what the guest wanted, and only build
2652 * a larger one if strictly necessary.
2654 io_header
->cmdp
= req
->cdb
;
2655 lba
= offset
/ s
->qdev
.blocksize
;
2656 nb_logical_blocks
= io_header
->dxfer_len
/ s
->qdev
.blocksize
;
2658 if ((req
->cmd
>> 5) == 0 && lba
<= 0x1ffff) {
2660 stl_be_p(&req
->cdb
[0], lba
| (req
->cmd
<< 24));
2661 req
->cdb
[4] = nb_logical_blocks
;
2663 io_header
->cmd_len
= 6;
2664 } else if ((req
->cmd
>> 5) <= 1 && lba
<= 0xffffffffULL
) {
2666 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x20;
2667 req
->cdb
[1] = req
->cdb1
;
2668 stl_be_p(&req
->cdb
[2], lba
);
2669 req
->cdb
[6] = req
->group_number
;
2670 stw_be_p(&req
->cdb
[7], nb_logical_blocks
);
2672 io_header
->cmd_len
= 10;
2673 } else if ((req
->cmd
>> 5) != 4 && lba
<= 0xffffffffULL
) {
2675 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0xA0;
2676 req
->cdb
[1] = req
->cdb1
;
2677 stl_be_p(&req
->cdb
[2], lba
);
2678 stl_be_p(&req
->cdb
[6], nb_logical_blocks
);
2679 req
->cdb
[10] = req
->group_number
;
2681 io_header
->cmd_len
= 12;
2684 req
->cdb
[0] = (req
->cmd
& 0x1f) | 0x80;
2685 req
->cdb
[1] = req
->cdb1
;
2686 stq_be_p(&req
->cdb
[2], lba
);
2687 stl_be_p(&req
->cdb
[10], nb_logical_blocks
);
2688 req
->cdb
[14] = req
->group_number
;
2690 io_header
->cmd_len
= 16;
2693 /* The rest is as in scsi-generic.c. */
2694 io_header
->mx_sb_len
= sizeof(r
->req
.sense
);
2695 io_header
->sbp
= r
->req
.sense
;
2696 io_header
->timeout
= UINT_MAX
;
2697 io_header
->usr_ptr
= r
;
2698 io_header
->flags
|= SG_FLAG_DIRECT_IO
;
2700 aiocb
= blk_aio_ioctl(s
->qdev
.conf
.blk
, SG_IO
, io_header
, cb
, opaque
);
2701 assert(aiocb
!= NULL
);
2705 static bool scsi_block_no_fua(SCSICommand
*cmd
)
2710 static BlockAIOCB
*scsi_block_dma_readv(int64_t offset
,
2712 BlockCompletionFunc
*cb
, void *cb_opaque
,
2715 SCSIBlockReq
*r
= opaque
;
2716 return scsi_block_do_sgio(r
, offset
, iov
,
2717 SG_DXFER_FROM_DEV
, cb
, cb_opaque
);
2720 static BlockAIOCB
*scsi_block_dma_writev(int64_t offset
,
2722 BlockCompletionFunc
*cb
, void *cb_opaque
,
2725 SCSIBlockReq
*r
= opaque
;
2726 return scsi_block_do_sgio(r
, offset
, iov
,
2727 SG_DXFER_TO_DEV
, cb
, cb_opaque
);
2730 static bool scsi_block_is_passthrough(SCSIDiskState
*s
, uint8_t *buf
)
2736 /* Check if BYTCHK == 0x01 (data-out buffer contains data
2737 * for the number of logical blocks specified in the length
2738 * field). For other modes, do not use scatter/gather operation.
2740 if ((buf
[1] & 6) == 2) {
2753 case WRITE_VERIFY_10
:
2754 case WRITE_VERIFY_12
:
2755 case WRITE_VERIFY_16
:
2756 /* MMC writing cannot be done via DMA helpers, because it sometimes
2757 * involves writing beyond the maximum LBA or to negative LBA (lead-in).
2758 * We might use scsi_block_dma_reqops as long as no writing commands are
2759 * seen, but performance usually isn't paramount on optical media. So,
2760 * just make scsi-block operate the same as scsi-generic for them.
2762 if (s
->qdev
.type
!= TYPE_ROM
) {
2775 static int32_t scsi_block_dma_command(SCSIRequest
*req
, uint8_t *buf
)
2777 SCSIBlockReq
*r
= (SCSIBlockReq
*)req
;
2778 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, req
->dev
);
2780 r
->cmd
= req
->cmd
.buf
[0];
2781 switch (r
->cmd
>> 5) {
2784 r
->cdb1
= r
->group_number
= 0;
2788 r
->cdb1
= req
->cmd
.buf
[1];
2789 r
->group_number
= req
->cmd
.buf
[6];
2793 r
->cdb1
= req
->cmd
.buf
[1];
2794 r
->group_number
= req
->cmd
.buf
[10];
2798 r
->cdb1
= req
->cmd
.buf
[1];
2799 r
->group_number
= req
->cmd
.buf
[14];
2805 /* Protection information is not supported. For SCSI versions 2 and
2806 * older (as determined by snooping the guest's INQUIRY commands),
2807 * there is no RD/WR/VRPROTECT, so skip this check in these versions.
2809 if (s
->qdev
.scsi_version
> 2 && (req
->cmd
.buf
[1] & 0xe0)) {
2810 scsi_check_condition(&r
->req
, SENSE_CODE(INVALID_FIELD
));
2814 r
->req
.status
= &r
->io_header
.status
;
2815 return scsi_disk_dma_command(req
, buf
);
2818 static const SCSIReqOps scsi_block_dma_reqops
= {
2819 .size
= sizeof(SCSIBlockReq
),
2820 .free_req
= scsi_free_request
,
2821 .send_command
= scsi_block_dma_command
,
2822 .read_data
= scsi_read_data
,
2823 .write_data
= scsi_write_data
,
2824 .get_buf
= scsi_get_buf
,
2825 .load_request
= scsi_disk_load_request
,
2826 .save_request
= scsi_disk_save_request
,
2829 static SCSIRequest
*scsi_block_new_request(SCSIDevice
*d
, uint32_t tag
,
2830 uint32_t lun
, uint8_t *buf
,
2833 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2835 if (scsi_block_is_passthrough(s
, buf
)) {
2836 return scsi_req_alloc(&scsi_generic_req_ops
, &s
->qdev
, tag
, lun
,
2839 return scsi_req_alloc(&scsi_block_dma_reqops
, &s
->qdev
, tag
, lun
,
2844 static int scsi_block_parse_cdb(SCSIDevice
*d
, SCSICommand
*cmd
,
2845 uint8_t *buf
, void *hba_private
)
2847 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, d
);
2849 if (scsi_block_is_passthrough(s
, buf
)) {
2850 return scsi_bus_parse_cdb(&s
->qdev
, cmd
, buf
, hba_private
);
2852 return scsi_req_parse_cdb(&s
->qdev
, cmd
, buf
);
2859 BlockAIOCB
*scsi_dma_readv(int64_t offset
, QEMUIOVector
*iov
,
2860 BlockCompletionFunc
*cb
, void *cb_opaque
,
2863 SCSIDiskReq
*r
= opaque
;
2864 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2865 return blk_aio_preadv(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2869 BlockAIOCB
*scsi_dma_writev(int64_t offset
, QEMUIOVector
*iov
,
2870 BlockCompletionFunc
*cb
, void *cb_opaque
,
2873 SCSIDiskReq
*r
= opaque
;
2874 SCSIDiskState
*s
= DO_UPCAST(SCSIDiskState
, qdev
, r
->req
.dev
);
2875 return blk_aio_pwritev(s
->qdev
.conf
.blk
, offset
, iov
, 0, cb
, cb_opaque
);
2878 static void scsi_disk_base_class_initfn(ObjectClass
*klass
, void *data
)
2880 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2881 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
2883 dc
->fw_name
= "disk";
2884 dc
->reset
= scsi_disk_reset
;
2885 sdc
->dma_readv
= scsi_dma_readv
;
2886 sdc
->dma_writev
= scsi_dma_writev
;
2887 sdc
->need_fua_emulation
= scsi_is_cmd_fua
;
2890 static const TypeInfo scsi_disk_base_info
= {
2891 .name
= TYPE_SCSI_DISK_BASE
,
2892 .parent
= TYPE_SCSI_DEVICE
,
2893 .class_init
= scsi_disk_base_class_initfn
,
2894 .instance_size
= sizeof(SCSIDiskState
),
2895 .class_size
= sizeof(SCSIDiskClass
),
2899 #define DEFINE_SCSI_DISK_PROPERTIES() \
2900 DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \
2901 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState, qdev.conf), \
2902 DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
2903 DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
2904 DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
2905 DEFINE_PROP_STRING("product", SCSIDiskState, product)
2907 static Property scsi_hd_properties
[] = {
2908 DEFINE_SCSI_DISK_PROPERTIES(),
2909 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
2910 SCSI_DISK_F_REMOVABLE
, false),
2911 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
2912 SCSI_DISK_F_DPOFUA
, false),
2913 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
2914 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
2915 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
2916 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
2917 DEFAULT_MAX_UNMAP_SIZE
),
2918 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
2919 DEFAULT_MAX_IO_SIZE
),
2920 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
2921 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
2923 DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState
, qdev
.conf
),
2924 DEFINE_PROP_END_OF_LIST(),
2927 static const VMStateDescription vmstate_scsi_disk_state
= {
2928 .name
= "scsi-disk",
2930 .minimum_version_id
= 1,
2931 .fields
= (VMStateField
[]) {
2932 VMSTATE_SCSI_DEVICE(qdev
, SCSIDiskState
),
2933 VMSTATE_BOOL(media_changed
, SCSIDiskState
),
2934 VMSTATE_BOOL(media_event
, SCSIDiskState
),
2935 VMSTATE_BOOL(eject_request
, SCSIDiskState
),
2936 VMSTATE_BOOL(tray_open
, SCSIDiskState
),
2937 VMSTATE_BOOL(tray_locked
, SCSIDiskState
),
2938 VMSTATE_END_OF_LIST()
2942 static void scsi_hd_class_initfn(ObjectClass
*klass
, void *data
)
2944 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2945 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
2947 sc
->realize
= scsi_hd_realize
;
2948 sc
->alloc_req
= scsi_new_request
;
2949 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
2950 dc
->desc
= "virtual SCSI disk";
2951 dc
->props
= scsi_hd_properties
;
2952 dc
->vmsd
= &vmstate_scsi_disk_state
;
2955 static const TypeInfo scsi_hd_info
= {
2957 .parent
= TYPE_SCSI_DISK_BASE
,
2958 .class_init
= scsi_hd_class_initfn
,
2961 static Property scsi_cd_properties
[] = {
2962 DEFINE_SCSI_DISK_PROPERTIES(),
2963 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
2964 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
2965 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
2966 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
2967 DEFAULT_MAX_IO_SIZE
),
2968 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
2970 DEFINE_PROP_END_OF_LIST(),
2973 static void scsi_cd_class_initfn(ObjectClass
*klass
, void *data
)
2975 DeviceClass
*dc
= DEVICE_CLASS(klass
);
2976 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
2978 sc
->realize
= scsi_cd_realize
;
2979 sc
->alloc_req
= scsi_new_request
;
2980 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
2981 dc
->desc
= "virtual SCSI CD-ROM";
2982 dc
->props
= scsi_cd_properties
;
2983 dc
->vmsd
= &vmstate_scsi_disk_state
;
2986 static const TypeInfo scsi_cd_info
= {
2988 .parent
= TYPE_SCSI_DISK_BASE
,
2989 .class_init
= scsi_cd_class_initfn
,
2993 static Property scsi_block_properties
[] = {
2994 DEFINE_BLOCK_ERROR_PROPERTIES(SCSIDiskState
, qdev
.conf
), \
2995 DEFINE_PROP_DRIVE("drive", SCSIDiskState
, qdev
.conf
.blk
),
2996 DEFINE_PROP_BOOL("share-rw", SCSIDiskState
, qdev
.conf
.share_rw
, false),
2997 DEFINE_PROP_UINT16("rotation_rate", SCSIDiskState
, rotation_rate
, 0),
2998 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
2999 DEFAULT_MAX_UNMAP_SIZE
),
3000 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3001 DEFAULT_MAX_IO_SIZE
),
3002 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3004 DEFINE_PROP_END_OF_LIST(),
3007 static void scsi_block_class_initfn(ObjectClass
*klass
, void *data
)
3009 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3010 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3011 SCSIDiskClass
*sdc
= SCSI_DISK_BASE_CLASS(klass
);
3013 sc
->realize
= scsi_block_realize
;
3014 sc
->alloc_req
= scsi_block_new_request
;
3015 sc
->parse_cdb
= scsi_block_parse_cdb
;
3016 sdc
->dma_readv
= scsi_block_dma_readv
;
3017 sdc
->dma_writev
= scsi_block_dma_writev
;
3018 sdc
->need_fua_emulation
= scsi_block_no_fua
;
3019 dc
->desc
= "SCSI block device passthrough";
3020 dc
->props
= scsi_block_properties
;
3021 dc
->vmsd
= &vmstate_scsi_disk_state
;
3024 static const TypeInfo scsi_block_info
= {
3025 .name
= "scsi-block",
3026 .parent
= TYPE_SCSI_DISK_BASE
,
3027 .class_init
= scsi_block_class_initfn
,
3031 static Property scsi_disk_properties
[] = {
3032 DEFINE_SCSI_DISK_PROPERTIES(),
3033 DEFINE_PROP_BIT("removable", SCSIDiskState
, features
,
3034 SCSI_DISK_F_REMOVABLE
, false),
3035 DEFINE_PROP_BIT("dpofua", SCSIDiskState
, features
,
3036 SCSI_DISK_F_DPOFUA
, false),
3037 DEFINE_PROP_UINT64("wwn", SCSIDiskState
, qdev
.wwn
, 0),
3038 DEFINE_PROP_UINT64("port_wwn", SCSIDiskState
, qdev
.port_wwn
, 0),
3039 DEFINE_PROP_UINT16("port_index", SCSIDiskState
, port_index
, 0),
3040 DEFINE_PROP_UINT64("max_unmap_size", SCSIDiskState
, max_unmap_size
,
3041 DEFAULT_MAX_UNMAP_SIZE
),
3042 DEFINE_PROP_UINT64("max_io_size", SCSIDiskState
, max_io_size
,
3043 DEFAULT_MAX_IO_SIZE
),
3044 DEFINE_PROP_INT32("scsi_version", SCSIDiskState
, qdev
.default_scsi_version
,
3046 DEFINE_PROP_END_OF_LIST(),
3049 static void scsi_disk_class_initfn(ObjectClass
*klass
, void *data
)
3051 DeviceClass
*dc
= DEVICE_CLASS(klass
);
3052 SCSIDeviceClass
*sc
= SCSI_DEVICE_CLASS(klass
);
3054 sc
->realize
= scsi_disk_realize
;
3055 sc
->alloc_req
= scsi_new_request
;
3056 sc
->unit_attention_reported
= scsi_disk_unit_attention_reported
;
3057 dc
->fw_name
= "disk";
3058 dc
->desc
= "virtual SCSI disk or CD-ROM (legacy)";
3059 dc
->reset
= scsi_disk_reset
;
3060 dc
->props
= scsi_disk_properties
;
3061 dc
->vmsd
= &vmstate_scsi_disk_state
;
3064 static const TypeInfo scsi_disk_info
= {
3065 .name
= "scsi-disk",
3066 .parent
= TYPE_SCSI_DISK_BASE
,
3067 .class_init
= scsi_disk_class_initfn
,
3070 static void scsi_disk_register_types(void)
3072 type_register_static(&scsi_disk_base_info
);
3073 type_register_static(&scsi_hd_info
);
3074 type_register_static(&scsi_cd_info
);
3076 type_register_static(&scsi_block_info
);
3078 type_register_static(&scsi_disk_info
);
3081 type_init(scsi_disk_register_types
)