2 #include "qemu-error.h"
10 static char *scsibus_get_dev_path(DeviceState
*dev
);
11 static char *scsibus_get_fw_dev_path(DeviceState
*dev
);
12 static int scsi_req_parse(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
);
13 static void scsi_req_dequeue(SCSIRequest
*req
);
15 static Property scsi_props
[] = {
16 DEFINE_PROP_UINT32("channel", SCSIDevice
, channel
, 0),
17 DEFINE_PROP_UINT32("scsi-id", SCSIDevice
, id
, -1),
18 DEFINE_PROP_UINT32("lun", SCSIDevice
, lun
, -1),
19 DEFINE_PROP_END_OF_LIST(),
22 static void scsi_bus_class_init(ObjectClass
*klass
, void *data
)
24 BusClass
*k
= BUS_CLASS(klass
);
26 k
->get_dev_path
= scsibus_get_dev_path
;
27 k
->get_fw_dev_path
= scsibus_get_fw_dev_path
;
30 static const TypeInfo scsi_bus_info
= {
31 .name
= TYPE_SCSI_BUS
,
33 .instance_size
= sizeof(SCSIBus
),
34 .class_init
= scsi_bus_class_init
,
36 static int next_scsi_bus
;
38 static int scsi_device_init(SCSIDevice
*s
)
40 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
47 static void scsi_device_destroy(SCSIDevice
*s
)
49 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
55 static SCSIRequest
*scsi_device_alloc_req(SCSIDevice
*s
, uint32_t tag
, uint32_t lun
,
56 uint8_t *buf
, void *hba_private
)
58 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
60 return sc
->alloc_req(s
, tag
, lun
, buf
, hba_private
);
66 static void scsi_device_unit_attention_reported(SCSIDevice
*s
)
68 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
69 if (sc
->unit_attention_reported
) {
70 sc
->unit_attention_reported(s
);
74 /* Create a scsi bus, and attach devices to it. */
75 void scsi_bus_new(SCSIBus
*bus
, DeviceState
*host
, const SCSIBusInfo
*info
)
77 qbus_create_inplace(&bus
->qbus
, TYPE_SCSI_BUS
, host
, NULL
);
78 bus
->busnr
= next_scsi_bus
++;
80 bus
->qbus
.allow_hotplug
= 1;
83 static void scsi_dma_restart_bh(void *opaque
)
85 SCSIDevice
*s
= opaque
;
86 SCSIRequest
*req
, *next
;
88 qemu_bh_delete(s
->bh
);
91 QTAILQ_FOREACH_SAFE(req
, &s
->requests
, next
, next
) {
95 switch (req
->cmd
.mode
) {
96 case SCSI_XFER_FROM_DEV
:
97 case SCSI_XFER_TO_DEV
:
98 scsi_req_continue(req
);
102 scsi_req_dequeue(req
);
103 scsi_req_enqueue(req
);
111 void scsi_req_retry(SCSIRequest
*req
)
113 /* No need to save a reference, because scsi_dma_restart_bh just
114 * looks at the request list. */
118 static void scsi_dma_restart_cb(void *opaque
, int running
, RunState state
)
120 SCSIDevice
*s
= opaque
;
126 s
->bh
= qemu_bh_new(scsi_dma_restart_bh
, s
);
127 qemu_bh_schedule(s
->bh
);
131 static int scsi_qdev_init(DeviceState
*qdev
)
133 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
134 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, dev
->qdev
.parent_bus
);
138 if (dev
->channel
> bus
->info
->max_channel
) {
139 error_report("bad scsi channel id: %d", dev
->channel
);
142 if (dev
->id
!= -1 && dev
->id
> bus
->info
->max_target
) {
143 error_report("bad scsi device id: %d", dev
->id
);
146 if (dev
->lun
!= -1 && dev
->lun
> bus
->info
->max_lun
) {
147 error_report("bad scsi device lun: %d", dev
->lun
);
153 if (dev
->lun
== -1) {
157 d
= scsi_device_find(bus
, dev
->channel
, ++id
, dev
->lun
);
158 } while (d
&& d
->lun
== dev
->lun
&& id
< bus
->info
->max_target
);
159 if (d
&& d
->lun
== dev
->lun
) {
160 error_report("no free target");
164 } else if (dev
->lun
== -1) {
167 d
= scsi_device_find(bus
, dev
->channel
, dev
->id
, ++lun
);
168 } while (d
&& d
->lun
== lun
&& lun
< bus
->info
->max_lun
);
169 if (d
&& d
->lun
== lun
) {
170 error_report("no free lun");
175 d
= scsi_device_find(bus
, dev
->channel
, dev
->id
, dev
->lun
);
177 if (d
->lun
== dev
->lun
&& dev
!= d
) {
182 QTAILQ_INIT(&dev
->requests
);
183 rc
= scsi_device_init(dev
);
185 dev
->vmsentry
= qemu_add_vm_change_state_handler(scsi_dma_restart_cb
,
193 static int scsi_qdev_exit(DeviceState
*qdev
)
195 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
198 qemu_del_vm_change_state_handler(dev
->vmsentry
);
200 scsi_device_destroy(dev
);
204 /* handle legacy '-drive if=scsi,...' cmd line args */
205 SCSIDevice
*scsi_bus_legacy_add_drive(SCSIBus
*bus
, BlockDriverState
*bdrv
,
206 int unit
, bool removable
, int bootindex
)
211 driver
= bdrv_is_sg(bdrv
) ? "scsi-generic" : "scsi-disk";
212 dev
= qdev_create(&bus
->qbus
, driver
);
213 qdev_prop_set_uint32(dev
, "scsi-id", unit
);
214 if (bootindex
>= 0) {
215 qdev_prop_set_int32(dev
, "bootindex", bootindex
);
217 if (qdev_prop_exists(dev
, "removable")) {
218 qdev_prop_set_bit(dev
, "removable", removable
);
220 if (qdev_prop_set_drive(dev
, "drive", bdrv
) < 0) {
224 if (qdev_init(dev
) < 0)
226 return SCSI_DEVICE(dev
);
229 int scsi_bus_legacy_handle_cmdline(SCSIBus
*bus
)
236 for (unit
= 0; unit
<= bus
->info
->max_target
; unit
++) {
237 dinfo
= drive_get(IF_SCSI
, bus
->busnr
, unit
);
241 qemu_opts_loc_restore(dinfo
->opts
);
242 if (!scsi_bus_legacy_add_drive(bus
, dinfo
->bdrv
, unit
, false, -1)) {
251 static int32_t scsi_invalid_field(SCSIRequest
*req
, uint8_t *buf
)
253 scsi_req_build_sense(req
, SENSE_CODE(INVALID_FIELD
));
254 scsi_req_complete(req
, CHECK_CONDITION
);
258 static const struct SCSIReqOps reqops_invalid_field
= {
259 .size
= sizeof(SCSIRequest
),
260 .send_command
= scsi_invalid_field
263 /* SCSIReqOps implementation for invalid commands. */
265 static int32_t scsi_invalid_command(SCSIRequest
*req
, uint8_t *buf
)
267 scsi_req_build_sense(req
, SENSE_CODE(INVALID_OPCODE
));
268 scsi_req_complete(req
, CHECK_CONDITION
);
272 static const struct SCSIReqOps reqops_invalid_opcode
= {
273 .size
= sizeof(SCSIRequest
),
274 .send_command
= scsi_invalid_command
277 /* SCSIReqOps implementation for unit attention conditions. */
279 static int32_t scsi_unit_attention(SCSIRequest
*req
, uint8_t *buf
)
281 if (req
->dev
&& req
->dev
->unit_attention
.key
== UNIT_ATTENTION
) {
282 scsi_req_build_sense(req
, req
->dev
->unit_attention
);
283 } else if (req
->bus
->unit_attention
.key
== UNIT_ATTENTION
) {
284 scsi_req_build_sense(req
, req
->bus
->unit_attention
);
286 scsi_req_complete(req
, CHECK_CONDITION
);
290 static const struct SCSIReqOps reqops_unit_attention
= {
291 .size
= sizeof(SCSIRequest
),
292 .send_command
= scsi_unit_attention
295 /* SCSIReqOps implementation for REPORT LUNS and for commands sent to
298 typedef struct SCSITargetReq SCSITargetReq
;
300 struct SCSITargetReq
{
306 static void store_lun(uint8_t *outbuf
, int lun
)
312 outbuf
[1] = (lun
& 255);
313 outbuf
[0] = (lun
>> 8) | 0x40;
316 static bool scsi_target_emulate_report_luns(SCSITargetReq
*r
)
323 if (r
->req
.cmd
.xfer
< 16) {
326 if (r
->req
.cmd
.buf
[2] > 2) {
329 channel
= r
->req
.dev
->channel
;
333 QTAILQ_FOREACH(qdev
, &r
->req
.bus
->qbus
.children
, sibling
) {
334 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
336 if (dev
->channel
== channel
&& dev
->id
== id
) {
346 len
= MIN(n
+ 8, r
->req
.cmd
.xfer
& ~7);
347 if (len
> sizeof(r
->buf
)) {
348 /* TODO: > 256 LUNs? */
352 memset(r
->buf
, 0, len
);
353 stl_be_p(&r
->buf
, n
);
354 i
= found_lun0
? 8 : 16;
355 QTAILQ_FOREACH(qdev
, &r
->req
.bus
->qbus
.children
, sibling
) {
356 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
358 if (dev
->channel
== channel
&& dev
->id
== id
) {
359 store_lun(&r
->buf
[i
], dev
->lun
);
368 static bool scsi_target_emulate_inquiry(SCSITargetReq
*r
)
370 assert(r
->req
.dev
->lun
!= r
->req
.lun
);
371 if (r
->req
.cmd
.buf
[1] & 0x2) {
372 /* Command support data - optional, not implemented */
376 if (r
->req
.cmd
.buf
[1] & 0x1) {
377 /* Vital product data */
378 uint8_t page_code
= r
->req
.cmd
.buf
[2];
379 r
->buf
[r
->len
++] = page_code
; /* this page */
380 r
->buf
[r
->len
++] = 0x00;
383 case 0x00: /* Supported page codes, mandatory */
387 r
->buf
[r
->len
++] = 0x00; /* list of supported pages (this page) */
388 r
->buf
[pages
] = r
->len
- pages
- 1; /* number of pages */
395 assert(r
->len
< sizeof(r
->buf
));
396 r
->len
= MIN(r
->req
.cmd
.xfer
, r
->len
);
400 /* Standard INQUIRY data */
401 if (r
->req
.cmd
.buf
[2] != 0) {
406 r
->len
= MIN(r
->req
.cmd
.xfer
, 36);
407 memset(r
->buf
, 0, r
->len
);
408 if (r
->req
.lun
!= 0) {
409 r
->buf
[0] = TYPE_NO_LUN
;
411 r
->buf
[0] = TYPE_NOT_PRESENT
| TYPE_INACTIVE
;
412 r
->buf
[2] = 5; /* Version */
413 r
->buf
[3] = 2 | 0x10; /* HiSup, response data format */
414 r
->buf
[4] = r
->len
- 5; /* Additional Length = (Len - 1) - 4 */
415 r
->buf
[7] = 0x10 | (r
->req
.bus
->info
->tcq
? 0x02 : 0); /* Sync, TCQ. */
416 memcpy(&r
->buf
[8], "QEMU ", 8);
417 memcpy(&r
->buf
[16], "QEMU TARGET ", 16);
418 strncpy((char *) &r
->buf
[32], QEMU_VERSION
, 4);
423 static int32_t scsi_target_send_command(SCSIRequest
*req
, uint8_t *buf
)
425 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
429 if (!scsi_target_emulate_report_luns(r
)) {
430 goto illegal_request
;
434 if (!scsi_target_emulate_inquiry(r
)) {
435 goto illegal_request
;
439 r
->len
= scsi_device_get_sense(r
->req
.dev
, r
->buf
,
440 MIN(req
->cmd
.xfer
, sizeof r
->buf
),
441 (req
->cmd
.buf
[1] & 1) == 0);
442 if (r
->req
.dev
->sense_is_ua
) {
443 scsi_device_unit_attention_reported(req
->dev
);
444 r
->req
.dev
->sense_len
= 0;
445 r
->req
.dev
->sense_is_ua
= false;
449 scsi_req_build_sense(req
, SENSE_CODE(LUN_NOT_SUPPORTED
));
450 scsi_req_complete(req
, CHECK_CONDITION
);
453 scsi_req_build_sense(req
, SENSE_CODE(INVALID_FIELD
));
454 scsi_req_complete(req
, CHECK_CONDITION
);
459 scsi_req_complete(req
, GOOD
);
464 static void scsi_target_read_data(SCSIRequest
*req
)
466 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
472 scsi_req_data(&r
->req
, n
);
474 scsi_req_complete(&r
->req
, GOOD
);
478 static uint8_t *scsi_target_get_buf(SCSIRequest
*req
)
480 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
485 static const struct SCSIReqOps reqops_target_command
= {
486 .size
= sizeof(SCSITargetReq
),
487 .send_command
= scsi_target_send_command
,
488 .read_data
= scsi_target_read_data
,
489 .get_buf
= scsi_target_get_buf
,
493 SCSIRequest
*scsi_req_alloc(const SCSIReqOps
*reqops
, SCSIDevice
*d
,
494 uint32_t tag
, uint32_t lun
, void *hba_private
)
498 req
= g_malloc0(reqops
->size
);
500 req
->bus
= scsi_bus_from_device(d
);
504 req
->hba_private
= hba_private
;
508 trace_scsi_req_alloc(req
->dev
->id
, req
->lun
, req
->tag
);
512 SCSIRequest
*scsi_req_new(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
513 uint8_t *buf
, void *hba_private
)
515 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, d
->qdev
.parent_bus
);
519 if (scsi_req_parse(&cmd
, d
, buf
) != 0) {
520 trace_scsi_req_parse_bad(d
->id
, lun
, tag
, buf
[0]);
521 req
= scsi_req_alloc(&reqops_invalid_opcode
, d
, tag
, lun
, hba_private
);
523 trace_scsi_req_parsed(d
->id
, lun
, tag
, buf
[0],
526 trace_scsi_req_parsed_lba(d
->id
, lun
, tag
, buf
[0],
530 if (cmd
.xfer
> INT32_MAX
) {
531 req
= scsi_req_alloc(&reqops_invalid_field
, d
, tag
, lun
, hba_private
);
532 } else if ((d
->unit_attention
.key
== UNIT_ATTENTION
||
533 bus
->unit_attention
.key
== UNIT_ATTENTION
) &&
534 (buf
[0] != INQUIRY
&&
535 buf
[0] != REPORT_LUNS
&&
536 buf
[0] != GET_CONFIGURATION
&&
537 buf
[0] != GET_EVENT_STATUS_NOTIFICATION
&&
540 * If we already have a pending unit attention condition,
541 * report this one before triggering another one.
543 !(buf
[0] == REQUEST_SENSE
&& d
->sense_is_ua
))) {
544 req
= scsi_req_alloc(&reqops_unit_attention
, d
, tag
, lun
,
546 } else if (lun
!= d
->lun
||
547 buf
[0] == REPORT_LUNS
||
548 (buf
[0] == REQUEST_SENSE
&& d
->sense_len
)) {
549 req
= scsi_req_alloc(&reqops_target_command
, d
, tag
, lun
,
552 req
= scsi_device_alloc_req(d
, tag
, lun
, buf
, hba_private
);
557 req
->resid
= req
->cmd
.xfer
;
561 trace_scsi_inquiry(d
->id
, lun
, tag
, cmd
.buf
[1], cmd
.buf
[2]);
563 case TEST_UNIT_READY
:
564 trace_scsi_test_unit_ready(d
->id
, lun
, tag
);
567 trace_scsi_report_luns(d
->id
, lun
, tag
);
570 trace_scsi_request_sense(d
->id
, lun
, tag
);
579 uint8_t *scsi_req_get_buf(SCSIRequest
*req
)
581 return req
->ops
->get_buf(req
);
584 static void scsi_clear_unit_attention(SCSIRequest
*req
)
587 if (req
->dev
->unit_attention
.key
!= UNIT_ATTENTION
&&
588 req
->bus
->unit_attention
.key
!= UNIT_ATTENTION
) {
593 * If an INQUIRY command enters the enabled command state,
594 * the device server shall [not] clear any unit attention condition;
595 * See also MMC-6, paragraphs 6.5 and 6.6.2.
597 if (req
->cmd
.buf
[0] == INQUIRY
||
598 req
->cmd
.buf
[0] == GET_CONFIGURATION
||
599 req
->cmd
.buf
[0] == GET_EVENT_STATUS_NOTIFICATION
) {
603 if (req
->dev
->unit_attention
.key
== UNIT_ATTENTION
) {
604 ua
= &req
->dev
->unit_attention
;
606 ua
= &req
->bus
->unit_attention
;
610 * If a REPORT LUNS command enters the enabled command state, [...]
611 * the device server shall clear any pending unit attention condition
612 * with an additional sense code of REPORTED LUNS DATA HAS CHANGED.
614 if (req
->cmd
.buf
[0] == REPORT_LUNS
&&
615 !(ua
->asc
== SENSE_CODE(REPORTED_LUNS_CHANGED
).asc
&&
616 ua
->ascq
== SENSE_CODE(REPORTED_LUNS_CHANGED
).ascq
)) {
620 *ua
= SENSE_CODE(NO_SENSE
);
623 int scsi_req_get_sense(SCSIRequest
*req
, uint8_t *buf
, int len
)
628 if (!req
->sense_len
) {
632 ret
= scsi_build_sense(req
->sense
, req
->sense_len
, buf
, len
, true);
635 * FIXME: clearing unit attention conditions upon autosense should be done
636 * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b
639 * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and
640 * 10b for HBAs that do not support it (do not call scsi_req_get_sense).
641 * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b.
643 if (req
->dev
->sense_is_ua
) {
644 scsi_device_unit_attention_reported(req
->dev
);
645 req
->dev
->sense_len
= 0;
646 req
->dev
->sense_is_ua
= false;
651 int scsi_device_get_sense(SCSIDevice
*dev
, uint8_t *buf
, int len
, bool fixed
)
653 return scsi_build_sense(dev
->sense
, dev
->sense_len
, buf
, len
, fixed
);
656 void scsi_req_build_sense(SCSIRequest
*req
, SCSISense sense
)
658 trace_scsi_req_build_sense(req
->dev
->id
, req
->lun
, req
->tag
,
659 sense
.key
, sense
.asc
, sense
.ascq
);
660 memset(req
->sense
, 0, 18);
661 req
->sense
[0] = 0x70;
662 req
->sense
[2] = sense
.key
;
664 req
->sense
[12] = sense
.asc
;
665 req
->sense
[13] = sense
.ascq
;
669 static void scsi_req_enqueue_internal(SCSIRequest
*req
)
671 assert(!req
->enqueued
);
673 if (req
->bus
->info
->get_sg_list
) {
674 req
->sg
= req
->bus
->info
->get_sg_list(req
);
678 req
->enqueued
= true;
679 QTAILQ_INSERT_TAIL(&req
->dev
->requests
, req
, next
);
682 int32_t scsi_req_enqueue(SCSIRequest
*req
)
687 scsi_req_enqueue_internal(req
);
689 rc
= req
->ops
->send_command(req
, req
->cmd
.buf
);
694 static void scsi_req_dequeue(SCSIRequest
*req
)
696 trace_scsi_req_dequeue(req
->dev
->id
, req
->lun
, req
->tag
);
699 QTAILQ_REMOVE(&req
->dev
->requests
, req
, next
);
700 req
->enqueued
= false;
705 static int scsi_get_performance_length(int num_desc
, int type
, int data_type
)
707 /* MMC-6, paragraph 6.7. */
710 if ((data_type
& 3) == 0) {
711 /* Each descriptor is as in Table 295 - Nominal performance. */
712 return 16 * num_desc
+ 8;
714 /* Each descriptor is as in Table 296 - Exceptions. */
715 return 6 * num_desc
+ 8;
720 return 8 * num_desc
+ 8;
722 return 2048 * num_desc
+ 8;
724 return 16 * num_desc
+ 8;
730 static int scsi_req_length(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
732 switch (buf
[0] >> 5) {
739 cmd
->xfer
= lduw_be_p(&buf
[7]);
743 cmd
->xfer
= ldl_be_p(&buf
[10]) & 0xffffffffULL
;
747 cmd
->xfer
= ldl_be_p(&buf
[6]) & 0xffffffffULL
;
755 case TEST_UNIT_READY
:
759 case WRITE_FILEMARKS
:
760 case WRITE_FILEMARKS_16
:
765 case ALLOW_MEDIUM_REMOVAL
:
768 case SYNCHRONIZE_CACHE
:
769 case SYNCHRONIZE_CACHE_16
:
771 case LOCK_UNLOCK_CACHE
:
782 case ALLOW_OVERWRITE
:
789 cmd
->xfer
= dev
->blocksize
;
791 case READ_CAPACITY_10
:
794 case READ_BLOCK_LIMITS
:
797 case SEND_VOLUME_TAG
:
798 /* GPCMD_SET_STREAMING from multimedia commands. */
799 if (dev
->type
== TYPE_ROM
) {
800 cmd
->xfer
= buf
[10] | (buf
[9] << 8);
802 cmd
->xfer
= buf
[9] | (buf
[8] << 8);
806 /* length 0 means 256 blocks */
807 if (cmd
->xfer
== 0) {
811 case WRITE_VERIFY_10
:
813 case WRITE_VERIFY_12
:
815 case WRITE_VERIFY_16
:
816 cmd
->xfer
*= dev
->blocksize
;
820 /* length 0 means 256 blocks */
821 if (cmd
->xfer
== 0) {
825 case RECOVER_BUFFERED_DATA
:
828 cmd
->xfer
*= dev
->blocksize
;
831 /* MMC mandates the parameter list to be 12-bytes long. Parameters
832 * for block devices are restricted to the header right now. */
833 if (dev
->type
== TYPE_ROM
&& (buf
[1] & 16)) {
836 cmd
->xfer
= (buf
[1] & 16) == 0 ? 0 : (buf
[1] & 32 ? 8 : 4);
840 case RECEIVE_DIAGNOSTIC
:
841 case SEND_DIAGNOSTIC
:
842 cmd
->xfer
= buf
[4] | (buf
[3] << 8);
848 cmd
->xfer
= buf
[8] | (buf
[7] << 8) | (buf
[6] << 16);
850 case PERSISTENT_RESERVE_OUT
:
851 cmd
->xfer
= ldl_be_p(&buf
[5]) & 0xffffffffULL
;
854 if (dev
->type
== TYPE_ROM
) {
855 /* MMC command GET PERFORMANCE. */
856 cmd
->xfer
= scsi_get_performance_length(buf
[9] | (buf
[8] << 8),
857 buf
[10], buf
[1] & 0x1f);
860 case MECHANISM_STATUS
:
861 case READ_DVD_STRUCTURE
:
862 case SEND_DVD_STRUCTURE
:
863 case MAINTENANCE_OUT
:
865 if (dev
->type
== TYPE_ROM
) {
866 /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */
867 cmd
->xfer
= buf
[9] | (buf
[8] << 8);
874 static int scsi_req_stream_length(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
877 /* stream commands */
884 case RECOVER_BUFFERED_DATA
:
887 cmd
->xfer
= buf
[4] | (buf
[3] << 8) | (buf
[2] << 16);
888 if (buf
[1] & 0x01) { /* fixed */
889 cmd
->xfer
*= dev
->blocksize
;
893 case READ_REVERSE_16
:
897 cmd
->xfer
= buf
[14] | (buf
[13] << 8) | (buf
[12] << 16);
898 if (buf
[1] & 0x01) { /* fixed */
899 cmd
->xfer
*= dev
->blocksize
;
908 cmd
->xfer
= buf
[13] | (buf
[12] << 8);
911 cmd
->xfer
= buf
[8] | (buf
[7] << 8);
914 cmd
->xfer
= buf
[4] | (buf
[3] << 8);
916 /* generic commands */
918 return scsi_req_length(cmd
, dev
, buf
);
923 static void scsi_cmd_xfer_mode(SCSICommand
*cmd
)
926 cmd
->mode
= SCSI_XFER_NONE
;
929 switch (cmd
->buf
[0]) {
932 case WRITE_VERIFY_10
:
934 case WRITE_VERIFY_12
:
936 case WRITE_VERIFY_16
:
940 case CHANGE_DEFINITION
:
944 case SEND_DIAGNOSTIC
:
947 case REASSIGN_BLOCKS
:
957 case SEARCH_EQUAL_12
:
960 case SEND_VOLUME_TAG
:
962 case SEND_DVD_STRUCTURE
:
963 case PERSISTENT_RESERVE_OUT
:
964 case MAINTENANCE_OUT
:
965 case ATA_PASSTHROUGH
:
966 cmd
->mode
= SCSI_XFER_TO_DEV
;
969 cmd
->mode
= SCSI_XFER_FROM_DEV
;
974 static uint64_t scsi_cmd_lba(SCSICommand
*cmd
)
976 uint8_t *buf
= cmd
->buf
;
979 switch (buf
[0] >> 5) {
981 lba
= ldl_be_p(&buf
[0]) & 0x1fffff;
986 lba
= ldl_be_p(&buf
[2]) & 0xffffffffULL
;
989 lba
= ldq_be_p(&buf
[2]);
998 int scsi_req_parse(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
1002 if (dev
->type
== TYPE_TAPE
) {
1003 rc
= scsi_req_stream_length(cmd
, dev
, buf
);
1005 rc
= scsi_req_length(cmd
, dev
, buf
);
1010 memcpy(cmd
->buf
, buf
, cmd
->len
);
1011 scsi_cmd_xfer_mode(cmd
);
1012 cmd
->lba
= scsi_cmd_lba(cmd
);
1017 * Predefined sense codes
1020 /* No sense data available */
1021 const struct SCSISense sense_code_NO_SENSE
= {
1022 .key
= NO_SENSE
, .asc
= 0x00 , .ascq
= 0x00
1025 /* LUN not ready, Manual intervention required */
1026 const struct SCSISense sense_code_LUN_NOT_READY
= {
1027 .key
= NOT_READY
, .asc
= 0x04, .ascq
= 0x03
1030 /* LUN not ready, Medium not present */
1031 const struct SCSISense sense_code_NO_MEDIUM
= {
1032 .key
= NOT_READY
, .asc
= 0x3a, .ascq
= 0x00
1035 /* LUN not ready, medium removal prevented */
1036 const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED
= {
1037 .key
= NOT_READY
, .asc
= 0x53, .ascq
= 0x00
1040 /* Hardware error, internal target failure */
1041 const struct SCSISense sense_code_TARGET_FAILURE
= {
1042 .key
= HARDWARE_ERROR
, .asc
= 0x44, .ascq
= 0x00
1045 /* Illegal request, invalid command operation code */
1046 const struct SCSISense sense_code_INVALID_OPCODE
= {
1047 .key
= ILLEGAL_REQUEST
, .asc
= 0x20, .ascq
= 0x00
1050 /* Illegal request, LBA out of range */
1051 const struct SCSISense sense_code_LBA_OUT_OF_RANGE
= {
1052 .key
= ILLEGAL_REQUEST
, .asc
= 0x21, .ascq
= 0x00
1055 /* Illegal request, Invalid field in CDB */
1056 const struct SCSISense sense_code_INVALID_FIELD
= {
1057 .key
= ILLEGAL_REQUEST
, .asc
= 0x24, .ascq
= 0x00
1060 /* Illegal request, LUN not supported */
1061 const struct SCSISense sense_code_LUN_NOT_SUPPORTED
= {
1062 .key
= ILLEGAL_REQUEST
, .asc
= 0x25, .ascq
= 0x00
1065 /* Illegal request, Saving parameters not supported */
1066 const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED
= {
1067 .key
= ILLEGAL_REQUEST
, .asc
= 0x39, .ascq
= 0x00
1070 /* Illegal request, Incompatible medium installed */
1071 const struct SCSISense sense_code_INCOMPATIBLE_FORMAT
= {
1072 .key
= ILLEGAL_REQUEST
, .asc
= 0x30, .ascq
= 0x00
1075 /* Illegal request, medium removal prevented */
1076 const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED
= {
1077 .key
= ILLEGAL_REQUEST
, .asc
= 0x53, .ascq
= 0x00
1080 /* Command aborted, I/O process terminated */
1081 const struct SCSISense sense_code_IO_ERROR
= {
1082 .key
= ABORTED_COMMAND
, .asc
= 0x00, .ascq
= 0x06
1085 /* Command aborted, I_T Nexus loss occurred */
1086 const struct SCSISense sense_code_I_T_NEXUS_LOSS
= {
1087 .key
= ABORTED_COMMAND
, .asc
= 0x29, .ascq
= 0x07
1090 /* Command aborted, Logical Unit failure */
1091 const struct SCSISense sense_code_LUN_FAILURE
= {
1092 .key
= ABORTED_COMMAND
, .asc
= 0x3e, .ascq
= 0x01
1095 /* Unit attention, Power on, reset or bus device reset occurred */
1096 const struct SCSISense sense_code_RESET
= {
1097 .key
= UNIT_ATTENTION
, .asc
= 0x29, .ascq
= 0x00
1100 /* Unit attention, No medium */
1101 const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM
= {
1102 .key
= UNIT_ATTENTION
, .asc
= 0x3a, .ascq
= 0x00
1105 /* Unit attention, Medium may have changed */
1106 const struct SCSISense sense_code_MEDIUM_CHANGED
= {
1107 .key
= UNIT_ATTENTION
, .asc
= 0x28, .ascq
= 0x00
1110 /* Unit attention, Reported LUNs data has changed */
1111 const struct SCSISense sense_code_REPORTED_LUNS_CHANGED
= {
1112 .key
= UNIT_ATTENTION
, .asc
= 0x3f, .ascq
= 0x0e
1115 /* Unit attention, Device internal reset */
1116 const struct SCSISense sense_code_DEVICE_INTERNAL_RESET
= {
1117 .key
= UNIT_ATTENTION
, .asc
= 0x29, .ascq
= 0x04
1123 * Convert between fixed and descriptor sense buffers
1125 int scsi_build_sense(uint8_t *in_buf
, int in_len
,
1126 uint8_t *buf
, int len
, bool fixed
)
1130 if (!fixed
&& len
< 8) {
1135 sense
.key
= NO_SENSE
;
1139 fixed_in
= (in_buf
[0] & 2) == 0;
1141 if (fixed
== fixed_in
) {
1142 memcpy(buf
, in_buf
, MIN(len
, in_len
));
1143 return MIN(len
, in_len
);
1147 sense
.key
= in_buf
[2];
1148 sense
.asc
= in_buf
[12];
1149 sense
.ascq
= in_buf
[13];
1151 sense
.key
= in_buf
[1];
1152 sense
.asc
= in_buf
[2];
1153 sense
.ascq
= in_buf
[3];
1157 memset(buf
, 0, len
);
1159 /* Return fixed format sense buffer */
1163 buf
[12] = sense
.asc
;
1164 buf
[13] = sense
.ascq
;
1165 return MIN(len
, 18);
1167 /* Return descriptor format sense buffer */
1171 buf
[3] = sense
.ascq
;
1176 static const char *scsi_command_name(uint8_t cmd
)
1178 static const char *names
[] = {
1179 [ TEST_UNIT_READY
] = "TEST_UNIT_READY",
1180 [ REWIND
] = "REWIND",
1181 [ REQUEST_SENSE
] = "REQUEST_SENSE",
1182 [ FORMAT_UNIT
] = "FORMAT_UNIT",
1183 [ READ_BLOCK_LIMITS
] = "READ_BLOCK_LIMITS",
1184 [ REASSIGN_BLOCKS
] = "REASSIGN_BLOCKS",
1185 [ READ_6
] = "READ_6",
1186 [ WRITE_6
] = "WRITE_6",
1187 [ SET_CAPACITY
] = "SET_CAPACITY",
1188 [ READ_REVERSE
] = "READ_REVERSE",
1189 [ WRITE_FILEMARKS
] = "WRITE_FILEMARKS",
1190 [ SPACE
] = "SPACE",
1191 [ INQUIRY
] = "INQUIRY",
1192 [ RECOVER_BUFFERED_DATA
] = "RECOVER_BUFFERED_DATA",
1193 [ MAINTENANCE_IN
] = "MAINTENANCE_IN",
1194 [ MAINTENANCE_OUT
] = "MAINTENANCE_OUT",
1195 [ MODE_SELECT
] = "MODE_SELECT",
1196 [ RESERVE
] = "RESERVE",
1197 [ RELEASE
] = "RELEASE",
1199 [ ERASE
] = "ERASE",
1200 [ MODE_SENSE
] = "MODE_SENSE",
1201 [ START_STOP
] = "START_STOP",
1202 [ RECEIVE_DIAGNOSTIC
] = "RECEIVE_DIAGNOSTIC",
1203 [ SEND_DIAGNOSTIC
] = "SEND_DIAGNOSTIC",
1204 [ ALLOW_MEDIUM_REMOVAL
] = "ALLOW_MEDIUM_REMOVAL",
1205 [ READ_CAPACITY_10
] = "READ_CAPACITY_10",
1206 [ READ_10
] = "READ_10",
1207 [ WRITE_10
] = "WRITE_10",
1208 [ SEEK_10
] = "SEEK_10",
1209 [ WRITE_VERIFY_10
] = "WRITE_VERIFY_10",
1210 [ VERIFY_10
] = "VERIFY_10",
1211 [ SEARCH_HIGH
] = "SEARCH_HIGH",
1212 [ SEARCH_EQUAL
] = "SEARCH_EQUAL",
1213 [ SEARCH_LOW
] = "SEARCH_LOW",
1214 [ SET_LIMITS
] = "SET_LIMITS",
1215 [ PRE_FETCH
] = "PRE_FETCH/READ_POSITION",
1216 /* READ_POSITION and PRE_FETCH use the same operation code */
1217 [ SYNCHRONIZE_CACHE
] = "SYNCHRONIZE_CACHE",
1218 [ LOCK_UNLOCK_CACHE
] = "LOCK_UNLOCK_CACHE",
1219 [ READ_DEFECT_DATA
] = "READ_DEFECT_DATA",
1220 [ MEDIUM_SCAN
] = "MEDIUM_SCAN",
1221 [ COMPARE
] = "COMPARE",
1222 [ COPY_VERIFY
] = "COPY_VERIFY",
1223 [ WRITE_BUFFER
] = "WRITE_BUFFER",
1224 [ READ_BUFFER
] = "READ_BUFFER",
1225 [ UPDATE_BLOCK
] = "UPDATE_BLOCK",
1226 [ READ_LONG_10
] = "READ_LONG_10",
1227 [ WRITE_LONG_10
] = "WRITE_LONG_10",
1228 [ CHANGE_DEFINITION
] = "CHANGE_DEFINITION",
1229 [ WRITE_SAME_10
] = "WRITE_SAME_10",
1230 [ UNMAP
] = "UNMAP",
1231 [ READ_TOC
] = "READ_TOC",
1232 [ REPORT_DENSITY_SUPPORT
] = "REPORT_DENSITY_SUPPORT",
1233 [ SANITIZE
] = "SANITIZE",
1234 [ GET_CONFIGURATION
] = "GET_CONFIGURATION",
1235 [ LOG_SELECT
] = "LOG_SELECT",
1236 [ LOG_SENSE
] = "LOG_SENSE",
1237 [ MODE_SELECT_10
] = "MODE_SELECT_10",
1238 [ RESERVE_10
] = "RESERVE_10",
1239 [ RELEASE_10
] = "RELEASE_10",
1240 [ MODE_SENSE_10
] = "MODE_SENSE_10",
1241 [ PERSISTENT_RESERVE_IN
] = "PERSISTENT_RESERVE_IN",
1242 [ PERSISTENT_RESERVE_OUT
] = "PERSISTENT_RESERVE_OUT",
1243 [ WRITE_FILEMARKS_16
] = "WRITE_FILEMARKS_16",
1244 [ EXTENDED_COPY
] = "EXTENDED_COPY",
1245 [ ATA_PASSTHROUGH
] = "ATA_PASSTHROUGH",
1246 [ ACCESS_CONTROL_IN
] = "ACCESS_CONTROL_IN",
1247 [ ACCESS_CONTROL_OUT
] = "ACCESS_CONTROL_OUT",
1248 [ READ_16
] = "READ_16",
1249 [ COMPARE_AND_WRITE
] = "COMPARE_AND_WRITE",
1250 [ WRITE_16
] = "WRITE_16",
1251 [ WRITE_VERIFY_16
] = "WRITE_VERIFY_16",
1252 [ VERIFY_16
] = "VERIFY_16",
1253 [ PRE_FETCH_16
] = "PRE_FETCH_16",
1254 [ SYNCHRONIZE_CACHE_16
] = "SPACE_16/SYNCHRONIZE_CACHE_16",
1255 /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */
1256 [ LOCATE_16
] = "LOCATE_16",
1257 [ WRITE_SAME_16
] = "ERASE_16/WRITE_SAME_16",
1258 /* ERASE_16 and WRITE_SAME_16 use the same operation code */
1259 [ SERVICE_ACTION_IN_16
] = "SERVICE_ACTION_IN_16",
1260 [ WRITE_LONG_16
] = "WRITE_LONG_16",
1261 [ REPORT_LUNS
] = "REPORT_LUNS",
1262 [ BLANK
] = "BLANK",
1263 [ MOVE_MEDIUM
] = "MOVE_MEDIUM",
1264 [ LOAD_UNLOAD
] = "LOAD_UNLOAD",
1265 [ READ_12
] = "READ_12",
1266 [ WRITE_12
] = "WRITE_12",
1267 [ ERASE_12
] = "ERASE_12/GET_PERFORMANCE",
1268 /* ERASE_12 and GET_PERFORMANCE use the same operation code */
1269 [ SERVICE_ACTION_IN_12
] = "SERVICE_ACTION_IN_12",
1270 [ WRITE_VERIFY_12
] = "WRITE_VERIFY_12",
1271 [ VERIFY_12
] = "VERIFY_12",
1272 [ SEARCH_HIGH_12
] = "SEARCH_HIGH_12",
1273 [ SEARCH_EQUAL_12
] = "SEARCH_EQUAL_12",
1274 [ SEARCH_LOW_12
] = "SEARCH_LOW_12",
1275 [ READ_ELEMENT_STATUS
] = "READ_ELEMENT_STATUS",
1276 [ SEND_VOLUME_TAG
] = "SEND_VOLUME_TAG/SET_STREAMING",
1277 /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */
1278 [ READ_CD
] = "READ_CD",
1279 [ READ_DEFECT_DATA_12
] = "READ_DEFECT_DATA_12",
1280 [ READ_DVD_STRUCTURE
] = "READ_DVD_STRUCTURE",
1281 [ RESERVE_TRACK
] = "RESERVE_TRACK",
1282 [ SEND_CUE_SHEET
] = "SEND_CUE_SHEET",
1283 [ SEND_DVD_STRUCTURE
] = "SEND_DVD_STRUCTURE",
1284 [ SET_CD_SPEED
] = "SET_CD_SPEED",
1285 [ SET_READ_AHEAD
] = "SET_READ_AHEAD",
1286 [ ALLOW_OVERWRITE
] = "ALLOW_OVERWRITE",
1287 [ MECHANISM_STATUS
] = "MECHANISM_STATUS",
1290 if (cmd
>= ARRAY_SIZE(names
) || names
[cmd
] == NULL
)
1295 SCSIRequest
*scsi_req_ref(SCSIRequest
*req
)
1301 void scsi_req_unref(SCSIRequest
*req
)
1303 assert(req
->refcount
> 0);
1304 if (--req
->refcount
== 0) {
1305 if (req
->ops
->free_req
) {
1306 req
->ops
->free_req(req
);
1312 /* Tell the device that we finished processing this chunk of I/O. It
1313 will start the next chunk or complete the command. */
1314 void scsi_req_continue(SCSIRequest
*req
)
1316 trace_scsi_req_continue(req
->dev
->id
, req
->lun
, req
->tag
);
1317 if (req
->cmd
.mode
== SCSI_XFER_TO_DEV
) {
1318 req
->ops
->write_data(req
);
1320 req
->ops
->read_data(req
);
1324 /* Called by the devices when data is ready for the HBA. The HBA should
1325 start a DMA operation to read or fill the device's data buffer.
1326 Once it completes, calling scsi_req_continue will restart I/O. */
1327 void scsi_req_data(SCSIRequest
*req
, int len
)
1330 if (req
->io_canceled
) {
1331 trace_scsi_req_data_canceled(req
->dev
->id
, req
->lun
, req
->tag
, len
);
1334 trace_scsi_req_data(req
->dev
->id
, req
->lun
, req
->tag
, len
);
1335 assert(req
->cmd
.mode
!= SCSI_XFER_NONE
);
1338 req
->bus
->info
->transfer_data(req
, len
);
1342 /* If the device calls scsi_req_data and the HBA specified a
1343 * scatter/gather list, the transfer has to happen in a single
1345 assert(!req
->dma_started
);
1346 req
->dma_started
= true;
1348 buf
= scsi_req_get_buf(req
);
1349 if (req
->cmd
.mode
== SCSI_XFER_FROM_DEV
) {
1350 req
->resid
= dma_buf_read(buf
, len
, req
->sg
);
1352 req
->resid
= dma_buf_write(buf
, len
, req
->sg
);
1354 scsi_req_continue(req
);
1357 void scsi_req_print(SCSIRequest
*req
)
1362 fprintf(fp
, "[%s id=%d] %s",
1363 req
->dev
->qdev
.parent_bus
->name
,
1365 scsi_command_name(req
->cmd
.buf
[0]));
1366 for (i
= 1; i
< req
->cmd
.len
; i
++) {
1367 fprintf(fp
, " 0x%02x", req
->cmd
.buf
[i
]);
1369 switch (req
->cmd
.mode
) {
1370 case SCSI_XFER_NONE
:
1371 fprintf(fp
, " - none\n");
1373 case SCSI_XFER_FROM_DEV
:
1374 fprintf(fp
, " - from-dev len=%zd\n", req
->cmd
.xfer
);
1376 case SCSI_XFER_TO_DEV
:
1377 fprintf(fp
, " - to-dev len=%zd\n", req
->cmd
.xfer
);
1380 fprintf(fp
, " - Oops\n");
1385 void scsi_req_complete(SCSIRequest
*req
, int status
)
1387 assert(req
->status
== -1);
1388 req
->status
= status
;
1390 assert(req
->sense_len
< sizeof(req
->sense
));
1391 if (status
== GOOD
) {
1395 if (req
->sense_len
) {
1396 memcpy(req
->dev
->sense
, req
->sense
, req
->sense_len
);
1397 req
->dev
->sense_len
= req
->sense_len
;
1398 req
->dev
->sense_is_ua
= (req
->ops
== &reqops_unit_attention
);
1400 req
->dev
->sense_len
= 0;
1401 req
->dev
->sense_is_ua
= false;
1405 * Unit attention state is now stored in the device's sense buffer
1406 * if the HBA didn't do autosense. Clear the pending unit attention
1409 scsi_clear_unit_attention(req
);
1412 scsi_req_dequeue(req
);
1413 req
->bus
->info
->complete(req
, req
->status
, req
->resid
);
1414 scsi_req_unref(req
);
1417 void scsi_req_cancel(SCSIRequest
*req
)
1419 if (!req
->enqueued
) {
1423 scsi_req_dequeue(req
);
1424 req
->io_canceled
= true;
1425 if (req
->ops
->cancel_io
) {
1426 req
->ops
->cancel_io(req
);
1428 if (req
->bus
->info
->cancel
) {
1429 req
->bus
->info
->cancel(req
);
1431 scsi_req_unref(req
);
1434 void scsi_req_abort(SCSIRequest
*req
, int status
)
1436 if (!req
->enqueued
) {
1440 scsi_req_dequeue(req
);
1441 req
->io_canceled
= true;
1442 if (req
->ops
->cancel_io
) {
1443 req
->ops
->cancel_io(req
);
1445 scsi_req_complete(req
, status
);
1446 scsi_req_unref(req
);
1449 void scsi_device_purge_requests(SCSIDevice
*sdev
, SCSISense sense
)
1453 while (!QTAILQ_EMPTY(&sdev
->requests
)) {
1454 req
= QTAILQ_FIRST(&sdev
->requests
);
1455 scsi_req_cancel(req
);
1457 sdev
->unit_attention
= sense
;
1460 static char *scsibus_get_dev_path(DeviceState
*dev
)
1462 SCSIDevice
*d
= DO_UPCAST(SCSIDevice
, qdev
, dev
);
1463 DeviceState
*hba
= dev
->parent_bus
->parent
;
1467 id
= qdev_get_dev_path(hba
);
1469 path
= g_strdup_printf("%s/%d:%d:%d", id
, d
->channel
, d
->id
, d
->lun
);
1471 path
= g_strdup_printf("%d:%d:%d", d
->channel
, d
->id
, d
->lun
);
1477 static char *scsibus_get_fw_dev_path(DeviceState
*dev
)
1479 SCSIDevice
*d
= SCSI_DEVICE(dev
);
1482 snprintf(path
, sizeof(path
), "channel@%x/%s@%x,%x", d
->channel
,
1483 qdev_fw_name(dev
), d
->id
, d
->lun
);
1485 return strdup(path
);
1488 SCSIDevice
*scsi_device_find(SCSIBus
*bus
, int channel
, int id
, int lun
)
1491 SCSIDevice
*target_dev
= NULL
;
1493 QTAILQ_FOREACH_REVERSE(qdev
, &bus
->qbus
.children
, ChildrenHead
, sibling
) {
1494 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
1496 if (dev
->channel
== channel
&& dev
->id
== id
) {
1497 if (dev
->lun
== lun
) {
1506 /* SCSI request list. For simplicity, pv points to the whole device */
1508 static void put_scsi_requests(QEMUFile
*f
, void *pv
, size_t size
)
1511 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, s
->qdev
.parent_bus
);
1514 QTAILQ_FOREACH(req
, &s
->requests
, next
) {
1515 assert(!req
->io_canceled
);
1516 assert(req
->status
== -1);
1517 assert(req
->enqueued
);
1519 qemu_put_sbyte(f
, req
->retry
? 1 : 2);
1520 qemu_put_buffer(f
, req
->cmd
.buf
, sizeof(req
->cmd
.buf
));
1521 qemu_put_be32s(f
, &req
->tag
);
1522 qemu_put_be32s(f
, &req
->lun
);
1523 if (bus
->info
->save_request
) {
1524 bus
->info
->save_request(f
, req
);
1526 if (req
->ops
->save_request
) {
1527 req
->ops
->save_request(f
, req
);
1530 qemu_put_sbyte(f
, 0);
1533 static int get_scsi_requests(QEMUFile
*f
, void *pv
, size_t size
)
1536 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, s
->qdev
.parent_bus
);
1539 while ((sbyte
= qemu_get_sbyte(f
)) > 0) {
1540 uint8_t buf
[SCSI_CMD_BUF_SIZE
];
1545 qemu_get_buffer(f
, buf
, sizeof(buf
));
1546 qemu_get_be32s(f
, &tag
);
1547 qemu_get_be32s(f
, &lun
);
1548 req
= scsi_req_new(s
, tag
, lun
, buf
, NULL
);
1549 req
->retry
= (sbyte
== 1);
1550 if (bus
->info
->load_request
) {
1551 req
->hba_private
= bus
->info
->load_request(f
, req
);
1553 if (req
->ops
->load_request
) {
1554 req
->ops
->load_request(f
, req
);
1557 /* Just restart it later. */
1558 scsi_req_enqueue_internal(req
);
1560 /* At this point, the request will be kept alive by the reference
1561 * added by scsi_req_enqueue_internal, so we can release our reference.
1562 * The HBA of course will add its own reference in the load_request
1563 * callback if it needs to hold on the SCSIRequest.
1565 scsi_req_unref(req
);
1571 static const VMStateInfo vmstate_info_scsi_requests
= {
1572 .name
= "scsi-requests",
1573 .get
= get_scsi_requests
,
1574 .put
= put_scsi_requests
,
1577 const VMStateDescription vmstate_scsi_device
= {
1578 .name
= "SCSIDevice",
1580 .minimum_version_id
= 1,
1581 .minimum_version_id_old
= 1,
1582 .fields
= (VMStateField
[]) {
1583 VMSTATE_UINT8(unit_attention
.key
, SCSIDevice
),
1584 VMSTATE_UINT8(unit_attention
.asc
, SCSIDevice
),
1585 VMSTATE_UINT8(unit_attention
.ascq
, SCSIDevice
),
1586 VMSTATE_BOOL(sense_is_ua
, SCSIDevice
),
1587 VMSTATE_UINT8_ARRAY(sense
, SCSIDevice
, SCSI_SENSE_BUF_SIZE
),
1588 VMSTATE_UINT32(sense_len
, SCSIDevice
),
1592 .field_exists
= NULL
,
1593 .size
= 0, /* ouch */
1594 .info
= &vmstate_info_scsi_requests
,
1595 .flags
= VMS_SINGLE
,
1598 VMSTATE_END_OF_LIST()
1602 static void scsi_device_class_init(ObjectClass
*klass
, void *data
)
1604 DeviceClass
*k
= DEVICE_CLASS(klass
);
1605 k
->bus_type
= TYPE_SCSI_BUS
;
1606 k
->init
= scsi_qdev_init
;
1607 k
->unplug
= qdev_simple_unplug_cb
;
1608 k
->exit
= scsi_qdev_exit
;
1609 k
->props
= scsi_props
;
1612 static TypeInfo scsi_device_type_info
= {
1613 .name
= TYPE_SCSI_DEVICE
,
1614 .parent
= TYPE_DEVICE
,
1615 .instance_size
= sizeof(SCSIDevice
),
1617 .class_size
= sizeof(SCSIDeviceClass
),
1618 .class_init
= scsi_device_class_init
,
1621 static void scsi_register_types(void)
1623 type_register_static(&scsi_bus_info
);
1624 type_register_static(&scsi_device_type_info
);
1627 type_init(scsi_register_types
)