1 #include "qemu/osdep.h"
2 #include "qapi/error.h"
3 #include "qemu/error-report.h"
4 #include "qemu/module.h"
5 #include "qemu/option.h"
6 #include "hw/qdev-properties.h"
7 #include "hw/scsi/scsi.h"
8 #include "migration/qemu-file-types.h"
9 #include "migration/vmstate.h"
10 #include "scsi/constants.h"
11 #include "sysemu/block-backend.h"
12 #include "sysemu/blockdev.h"
13 #include "sysemu/sysemu.h"
14 #include "sysemu/runstate.h"
16 #include "sysemu/dma.h"
17 #include "qemu/cutils.h"
19 static char *scsibus_get_dev_path(DeviceState
*dev
);
20 static char *scsibus_get_fw_dev_path(DeviceState
*dev
);
21 static void scsi_req_dequeue(SCSIRequest
*req
);
22 static uint8_t *scsi_target_alloc_buf(SCSIRequest
*req
, size_t len
);
23 static void scsi_target_free_buf(SCSIRequest
*req
);
25 static Property scsi_props
[] = {
26 DEFINE_PROP_UINT32("channel", SCSIDevice
, channel
, 0),
27 DEFINE_PROP_UINT32("scsi-id", SCSIDevice
, id
, -1),
28 DEFINE_PROP_UINT32("lun", SCSIDevice
, lun
, -1),
29 DEFINE_PROP_END_OF_LIST(),
32 static void scsi_bus_class_init(ObjectClass
*klass
, void *data
)
34 BusClass
*k
= BUS_CLASS(klass
);
35 HotplugHandlerClass
*hc
= HOTPLUG_HANDLER_CLASS(klass
);
37 k
->get_dev_path
= scsibus_get_dev_path
;
38 k
->get_fw_dev_path
= scsibus_get_fw_dev_path
;
39 hc
->unplug
= qdev_simple_device_unplug_cb
;
42 static const TypeInfo scsi_bus_info
= {
43 .name
= TYPE_SCSI_BUS
,
45 .instance_size
= sizeof(SCSIBus
),
46 .class_init
= scsi_bus_class_init
,
47 .interfaces
= (InterfaceInfo
[]) {
48 { TYPE_HOTPLUG_HANDLER
},
52 static int next_scsi_bus
;
54 static void scsi_device_realize(SCSIDevice
*s
, Error
**errp
)
56 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
62 static void scsi_device_unrealize(SCSIDevice
*s
, Error
**errp
)
64 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
66 sc
->unrealize(s
, errp
);
70 int scsi_bus_parse_cdb(SCSIDevice
*dev
, SCSICommand
*cmd
, uint8_t *buf
,
73 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, dev
->qdev
.parent_bus
);
76 assert(cmd
->len
== 0);
77 rc
= scsi_req_parse_cdb(dev
, cmd
, buf
);
78 if (bus
->info
->parse_cdb
) {
79 rc
= bus
->info
->parse_cdb(dev
, cmd
, buf
, hba_private
);
84 static SCSIRequest
*scsi_device_alloc_req(SCSIDevice
*s
, uint32_t tag
, uint32_t lun
,
85 uint8_t *buf
, void *hba_private
)
87 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
89 return sc
->alloc_req(s
, tag
, lun
, buf
, hba_private
);
95 void scsi_device_unit_attention_reported(SCSIDevice
*s
)
97 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
98 if (sc
->unit_attention_reported
) {
99 sc
->unit_attention_reported(s
);
103 /* Create a scsi bus, and attach devices to it. */
104 void scsi_bus_new(SCSIBus
*bus
, size_t bus_size
, DeviceState
*host
,
105 const SCSIBusInfo
*info
, const char *bus_name
)
107 qbus_create_inplace(bus
, bus_size
, TYPE_SCSI_BUS
, host
, bus_name
);
108 bus
->busnr
= next_scsi_bus
++;
110 qbus_set_bus_hotplug_handler(BUS(bus
), &error_abort
);
113 static void scsi_dma_restart_bh(void *opaque
)
115 SCSIDevice
*s
= opaque
;
116 SCSIRequest
*req
, *next
;
118 qemu_bh_delete(s
->bh
);
121 aio_context_acquire(blk_get_aio_context(s
->conf
.blk
));
122 QTAILQ_FOREACH_SAFE(req
, &s
->requests
, next
, next
) {
126 switch (req
->cmd
.mode
) {
127 case SCSI_XFER_FROM_DEV
:
128 case SCSI_XFER_TO_DEV
:
129 scsi_req_continue(req
);
132 scsi_req_dequeue(req
);
133 scsi_req_enqueue(req
);
139 aio_context_release(blk_get_aio_context(s
->conf
.blk
));
142 void scsi_req_retry(SCSIRequest
*req
)
144 /* No need to save a reference, because scsi_dma_restart_bh just
145 * looks at the request list. */
149 static void scsi_dma_restart_cb(void *opaque
, int running
, RunState state
)
151 SCSIDevice
*s
= opaque
;
157 AioContext
*ctx
= blk_get_aio_context(s
->conf
.blk
);
158 s
->bh
= aio_bh_new(ctx
, scsi_dma_restart_bh
, s
);
159 qemu_bh_schedule(s
->bh
);
163 static void scsi_qdev_realize(DeviceState
*qdev
, Error
**errp
)
165 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
166 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, dev
->qdev
.parent_bus
);
168 Error
*local_err
= NULL
;
170 if (dev
->channel
> bus
->info
->max_channel
) {
171 error_setg(errp
, "bad scsi channel id: %d", dev
->channel
);
174 if (dev
->id
!= -1 && dev
->id
> bus
->info
->max_target
) {
175 error_setg(errp
, "bad scsi device id: %d", dev
->id
);
178 if (dev
->lun
!= -1 && dev
->lun
> bus
->info
->max_lun
) {
179 error_setg(errp
, "bad scsi device lun: %d", dev
->lun
);
185 if (dev
->lun
== -1) {
189 d
= scsi_device_find(bus
, dev
->channel
, ++id
, dev
->lun
);
190 } while (d
&& d
->lun
== dev
->lun
&& id
< bus
->info
->max_target
);
191 if (d
&& d
->lun
== dev
->lun
) {
192 error_setg(errp
, "no free target");
196 } else if (dev
->lun
== -1) {
199 d
= scsi_device_find(bus
, dev
->channel
, dev
->id
, ++lun
);
200 } while (d
&& d
->lun
== lun
&& lun
< bus
->info
->max_lun
);
201 if (d
&& d
->lun
== lun
) {
202 error_setg(errp
, "no free lun");
207 d
= scsi_device_find(bus
, dev
->channel
, dev
->id
, dev
->lun
);
209 if (d
->lun
== dev
->lun
&& dev
!= d
) {
210 error_setg(errp
, "lun already used by '%s'", d
->qdev
.id
);
215 QTAILQ_INIT(&dev
->requests
);
216 scsi_device_realize(dev
, &local_err
);
218 error_propagate(errp
, local_err
);
221 dev
->vmsentry
= qdev_add_vm_change_state_handler(DEVICE(dev
),
222 scsi_dma_restart_cb
, dev
);
225 static void scsi_qdev_unrealize(DeviceState
*qdev
, Error
**errp
)
227 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
228 Error
*local_err
= NULL
;
231 qemu_del_vm_change_state_handler(dev
->vmsentry
);
234 scsi_device_purge_requests(dev
, SENSE_CODE(NO_SENSE
));
236 scsi_device_unrealize(dev
, &local_err
);
238 error_propagate(errp
, local_err
);
242 blockdev_mark_auto_del(dev
->conf
.blk
);
245 /* handle legacy '-drive if=scsi,...' cmd line args */
246 SCSIDevice
*scsi_bus_legacy_add_drive(SCSIBus
*bus
, BlockBackend
*blk
,
247 int unit
, bool removable
, int bootindex
,
249 BlockdevOnError rerror
,
250 BlockdevOnError werror
,
251 const char *serial
, Error
**errp
)
259 if (blk_is_sg(blk
)) {
260 driver
= "scsi-generic";
262 dinfo
= blk_legacy_dinfo(blk
);
263 if (dinfo
&& dinfo
->media_cd
) {
269 dev
= qdev_create(&bus
->qbus
, driver
);
270 name
= g_strdup_printf("legacy[%d]", unit
);
271 object_property_add_child(OBJECT(bus
), name
, OBJECT(dev
), NULL
);
274 qdev_prop_set_uint32(dev
, "scsi-id", unit
);
275 if (bootindex
>= 0) {
276 object_property_set_int(OBJECT(dev
), bootindex
, "bootindex",
279 if (object_property_find(OBJECT(dev
), "removable", NULL
)) {
280 qdev_prop_set_bit(dev
, "removable", removable
);
282 if (serial
&& object_property_find(OBJECT(dev
), "serial", NULL
)) {
283 qdev_prop_set_string(dev
, "serial", serial
);
285 qdev_prop_set_drive(dev
, "drive", blk
, &err
);
287 error_propagate(errp
, err
);
288 object_unparent(OBJECT(dev
));
291 object_property_set_bool(OBJECT(dev
), share_rw
, "share-rw", &err
);
293 error_propagate(errp
, err
);
294 object_unparent(OBJECT(dev
));
298 qdev_prop_set_enum(dev
, "rerror", rerror
);
299 qdev_prop_set_enum(dev
, "werror", werror
);
301 object_property_set_bool(OBJECT(dev
), true, "realized", &err
);
303 error_propagate(errp
, err
);
304 object_unparent(OBJECT(dev
));
307 return SCSI_DEVICE(dev
);
310 void scsi_bus_legacy_handle_cmdline(SCSIBus
*bus
)
317 for (unit
= 0; unit
<= bus
->info
->max_target
; unit
++) {
318 dinfo
= drive_get(IF_SCSI
, bus
->busnr
, unit
);
322 qemu_opts_loc_restore(dinfo
->opts
);
323 scsi_bus_legacy_add_drive(bus
, blk_by_legacy_dinfo(dinfo
),
324 unit
, false, -1, false,
325 BLOCKDEV_ON_ERROR_AUTO
,
326 BLOCKDEV_ON_ERROR_AUTO
,
332 static int32_t scsi_invalid_field(SCSIRequest
*req
, uint8_t *buf
)
334 scsi_req_build_sense(req
, SENSE_CODE(INVALID_FIELD
));
335 scsi_req_complete(req
, CHECK_CONDITION
);
339 static const struct SCSIReqOps reqops_invalid_field
= {
340 .size
= sizeof(SCSIRequest
),
341 .send_command
= scsi_invalid_field
344 /* SCSIReqOps implementation for invalid commands. */
346 static int32_t scsi_invalid_command(SCSIRequest
*req
, uint8_t *buf
)
348 scsi_req_build_sense(req
, SENSE_CODE(INVALID_OPCODE
));
349 scsi_req_complete(req
, CHECK_CONDITION
);
353 static const struct SCSIReqOps reqops_invalid_opcode
= {
354 .size
= sizeof(SCSIRequest
),
355 .send_command
= scsi_invalid_command
358 /* SCSIReqOps implementation for unit attention conditions. */
360 static int32_t scsi_unit_attention(SCSIRequest
*req
, uint8_t *buf
)
362 if (req
->dev
->unit_attention
.key
== UNIT_ATTENTION
) {
363 scsi_req_build_sense(req
, req
->dev
->unit_attention
);
364 } else if (req
->bus
->unit_attention
.key
== UNIT_ATTENTION
) {
365 scsi_req_build_sense(req
, req
->bus
->unit_attention
);
367 scsi_req_complete(req
, CHECK_CONDITION
);
371 static const struct SCSIReqOps reqops_unit_attention
= {
372 .size
= sizeof(SCSIRequest
),
373 .send_command
= scsi_unit_attention
376 /* SCSIReqOps implementation for REPORT LUNS and for commands sent to
379 typedef struct SCSITargetReq SCSITargetReq
;
381 struct SCSITargetReq
{
388 static void store_lun(uint8_t *outbuf
, int lun
)
394 outbuf
[1] = (lun
& 255);
395 outbuf
[0] = (lun
>> 8) | 0x40;
398 static bool scsi_target_emulate_report_luns(SCSITargetReq
*r
)
405 if (r
->req
.cmd
.xfer
< 16) {
408 if (r
->req
.cmd
.buf
[2] > 2) {
411 channel
= r
->req
.dev
->channel
;
415 QTAILQ_FOREACH(kid
, &r
->req
.bus
->qbus
.children
, sibling
) {
416 DeviceState
*qdev
= kid
->child
;
417 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
419 if (dev
->channel
== channel
&& dev
->id
== id
) {
430 scsi_target_alloc_buf(&r
->req
, n
+ 8);
432 len
= MIN(n
+ 8, r
->req
.cmd
.xfer
& ~7);
433 memset(r
->buf
, 0, len
);
434 stl_be_p(&r
->buf
[0], n
);
435 i
= found_lun0
? 8 : 16;
436 QTAILQ_FOREACH(kid
, &r
->req
.bus
->qbus
.children
, sibling
) {
437 DeviceState
*qdev
= kid
->child
;
438 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
440 if (dev
->channel
== channel
&& dev
->id
== id
) {
441 store_lun(&r
->buf
[i
], dev
->lun
);
450 static bool scsi_target_emulate_inquiry(SCSITargetReq
*r
)
452 assert(r
->req
.dev
->lun
!= r
->req
.lun
);
454 scsi_target_alloc_buf(&r
->req
, SCSI_INQUIRY_LEN
);
456 if (r
->req
.cmd
.buf
[1] & 0x2) {
457 /* Command support data - optional, not implemented */
461 if (r
->req
.cmd
.buf
[1] & 0x1) {
462 /* Vital product data */
463 uint8_t page_code
= r
->req
.cmd
.buf
[2];
464 r
->buf
[r
->len
++] = page_code
; /* this page */
465 r
->buf
[r
->len
++] = 0x00;
468 case 0x00: /* Supported page codes, mandatory */
472 r
->buf
[r
->len
++] = 0x00; /* list of supported pages (this page) */
473 r
->buf
[pages
] = r
->len
- pages
- 1; /* number of pages */
480 assert(r
->len
< r
->buf_len
);
481 r
->len
= MIN(r
->req
.cmd
.xfer
, r
->len
);
485 /* Standard INQUIRY data */
486 if (r
->req
.cmd
.buf
[2] != 0) {
491 r
->len
= MIN(r
->req
.cmd
.xfer
, SCSI_INQUIRY_LEN
);
492 memset(r
->buf
, 0, r
->len
);
493 if (r
->req
.lun
!= 0) {
494 r
->buf
[0] = TYPE_NO_LUN
;
496 r
->buf
[0] = TYPE_NOT_PRESENT
| TYPE_INACTIVE
;
497 r
->buf
[2] = 5; /* Version */
498 r
->buf
[3] = 2 | 0x10; /* HiSup, response data format */
499 r
->buf
[4] = r
->len
- 5; /* Additional Length = (Len - 1) - 4 */
500 r
->buf
[7] = 0x10 | (r
->req
.bus
->info
->tcq
? 0x02 : 0); /* Sync, TCQ. */
501 memcpy(&r
->buf
[8], "QEMU ", 8);
502 memcpy(&r
->buf
[16], "QEMU TARGET ", 16);
503 pstrcpy((char *) &r
->buf
[32], 4, qemu_hw_version());
508 static size_t scsi_sense_len(SCSIRequest
*req
)
510 if (req
->dev
->type
== TYPE_SCANNER
)
511 return SCSI_SENSE_LEN_SCANNER
;
513 return SCSI_SENSE_LEN
;
516 static int32_t scsi_target_send_command(SCSIRequest
*req
, uint8_t *buf
)
518 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
519 int fixed_sense
= (req
->cmd
.buf
[1] & 1) == 0;
522 buf
[0] != INQUIRY
&& buf
[0] != REQUEST_SENSE
) {
523 scsi_req_build_sense(req
, SENSE_CODE(LUN_NOT_SUPPORTED
));
524 scsi_req_complete(req
, CHECK_CONDITION
);
529 if (!scsi_target_emulate_report_luns(r
)) {
530 goto illegal_request
;
534 if (!scsi_target_emulate_inquiry(r
)) {
535 goto illegal_request
;
539 scsi_target_alloc_buf(&r
->req
, scsi_sense_len(req
));
541 const struct SCSISense sense
= SENSE_CODE(LUN_NOT_SUPPORTED
);
543 r
->len
= scsi_build_sense_buf(r
->buf
, req
->cmd
.xfer
,
546 r
->len
= scsi_device_get_sense(r
->req
.dev
, r
->buf
,
547 MIN(req
->cmd
.xfer
, r
->buf_len
),
550 if (r
->req
.dev
->sense_is_ua
) {
551 scsi_device_unit_attention_reported(req
->dev
);
552 r
->req
.dev
->sense_len
= 0;
553 r
->req
.dev
->sense_is_ua
= false;
556 case TEST_UNIT_READY
:
559 scsi_req_build_sense(req
, SENSE_CODE(INVALID_OPCODE
));
560 scsi_req_complete(req
, CHECK_CONDITION
);
563 scsi_req_build_sense(req
, SENSE_CODE(INVALID_FIELD
));
564 scsi_req_complete(req
, CHECK_CONDITION
);
569 scsi_req_complete(req
, GOOD
);
574 static void scsi_target_read_data(SCSIRequest
*req
)
576 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
582 scsi_req_data(&r
->req
, n
);
584 scsi_req_complete(&r
->req
, GOOD
);
588 static uint8_t *scsi_target_get_buf(SCSIRequest
*req
)
590 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
595 static uint8_t *scsi_target_alloc_buf(SCSIRequest
*req
, size_t len
)
597 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
599 r
->buf
= g_malloc(len
);
605 static void scsi_target_free_buf(SCSIRequest
*req
)
607 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
612 static const struct SCSIReqOps reqops_target_command
= {
613 .size
= sizeof(SCSITargetReq
),
614 .send_command
= scsi_target_send_command
,
615 .read_data
= scsi_target_read_data
,
616 .get_buf
= scsi_target_get_buf
,
617 .free_req
= scsi_target_free_buf
,
621 SCSIRequest
*scsi_req_alloc(const SCSIReqOps
*reqops
, SCSIDevice
*d
,
622 uint32_t tag
, uint32_t lun
, void *hba_private
)
625 SCSIBus
*bus
= scsi_bus_from_device(d
);
626 BusState
*qbus
= BUS(bus
);
627 const int memset_off
= offsetof(SCSIRequest
, sense
)
628 + sizeof(req
->sense
);
630 req
= g_malloc(reqops
->size
);
631 memset((uint8_t *)req
+ memset_off
, 0, reqops
->size
- memset_off
);
637 req
->hba_private
= hba_private
;
640 object_ref(OBJECT(d
));
641 object_ref(OBJECT(qbus
->parent
));
642 notifier_list_init(&req
->cancel_notifiers
);
643 trace_scsi_req_alloc(req
->dev
->id
, req
->lun
, req
->tag
);
647 SCSIRequest
*scsi_req_new(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
648 uint8_t *buf
, void *hba_private
)
650 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, d
->qdev
.parent_bus
);
651 const SCSIReqOps
*ops
;
652 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(d
);
654 SCSICommand cmd
= { .len
= 0 };
657 if ((d
->unit_attention
.key
== UNIT_ATTENTION
||
658 bus
->unit_attention
.key
== UNIT_ATTENTION
) &&
659 (buf
[0] != INQUIRY
&&
660 buf
[0] != REPORT_LUNS
&&
661 buf
[0] != GET_CONFIGURATION
&&
662 buf
[0] != GET_EVENT_STATUS_NOTIFICATION
&&
665 * If we already have a pending unit attention condition,
666 * report this one before triggering another one.
668 !(buf
[0] == REQUEST_SENSE
&& d
->sense_is_ua
))) {
669 ops
= &reqops_unit_attention
;
670 } else if (lun
!= d
->lun
||
671 buf
[0] == REPORT_LUNS
||
672 (buf
[0] == REQUEST_SENSE
&& d
->sense_len
)) {
673 ops
= &reqops_target_command
;
678 if (ops
!= NULL
|| !sc
->parse_cdb
) {
679 ret
= scsi_req_parse_cdb(d
, &cmd
, buf
);
681 ret
= sc
->parse_cdb(d
, &cmd
, buf
, hba_private
);
685 trace_scsi_req_parse_bad(d
->id
, lun
, tag
, buf
[0]);
686 req
= scsi_req_alloc(&reqops_invalid_opcode
, d
, tag
, lun
, hba_private
);
688 assert(cmd
.len
!= 0);
689 trace_scsi_req_parsed(d
->id
, lun
, tag
, buf
[0],
692 trace_scsi_req_parsed_lba(d
->id
, lun
, tag
, buf
[0],
696 if (cmd
.xfer
> INT32_MAX
) {
697 req
= scsi_req_alloc(&reqops_invalid_field
, d
, tag
, lun
, hba_private
);
699 req
= scsi_req_alloc(ops
, d
, tag
, lun
, hba_private
);
701 req
= scsi_device_alloc_req(d
, tag
, lun
, buf
, hba_private
);
706 req
->resid
= req
->cmd
.xfer
;
710 trace_scsi_inquiry(d
->id
, lun
, tag
, cmd
.buf
[1], cmd
.buf
[2]);
712 case TEST_UNIT_READY
:
713 trace_scsi_test_unit_ready(d
->id
, lun
, tag
);
716 trace_scsi_report_luns(d
->id
, lun
, tag
);
719 trace_scsi_request_sense(d
->id
, lun
, tag
);
728 uint8_t *scsi_req_get_buf(SCSIRequest
*req
)
730 return req
->ops
->get_buf(req
);
733 static void scsi_clear_unit_attention(SCSIRequest
*req
)
736 if (req
->dev
->unit_attention
.key
!= UNIT_ATTENTION
&&
737 req
->bus
->unit_attention
.key
!= UNIT_ATTENTION
) {
742 * If an INQUIRY command enters the enabled command state,
743 * the device server shall [not] clear any unit attention condition;
744 * See also MMC-6, paragraphs 6.5 and 6.6.2.
746 if (req
->cmd
.buf
[0] == INQUIRY
||
747 req
->cmd
.buf
[0] == GET_CONFIGURATION
||
748 req
->cmd
.buf
[0] == GET_EVENT_STATUS_NOTIFICATION
) {
752 if (req
->dev
->unit_attention
.key
== UNIT_ATTENTION
) {
753 ua
= &req
->dev
->unit_attention
;
755 ua
= &req
->bus
->unit_attention
;
759 * If a REPORT LUNS command enters the enabled command state, [...]
760 * the device server shall clear any pending unit attention condition
761 * with an additional sense code of REPORTED LUNS DATA HAS CHANGED.
763 if (req
->cmd
.buf
[0] == REPORT_LUNS
&&
764 !(ua
->asc
== SENSE_CODE(REPORTED_LUNS_CHANGED
).asc
&&
765 ua
->ascq
== SENSE_CODE(REPORTED_LUNS_CHANGED
).ascq
)) {
769 *ua
= SENSE_CODE(NO_SENSE
);
772 int scsi_req_get_sense(SCSIRequest
*req
, uint8_t *buf
, int len
)
777 if (!req
->sense_len
) {
781 ret
= scsi_convert_sense(req
->sense
, req
->sense_len
, buf
, len
, true);
784 * FIXME: clearing unit attention conditions upon autosense should be done
785 * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b
788 * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and
789 * 10b for HBAs that do not support it (do not call scsi_req_get_sense).
790 * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b.
792 if (req
->dev
->sense_is_ua
) {
793 scsi_device_unit_attention_reported(req
->dev
);
794 req
->dev
->sense_len
= 0;
795 req
->dev
->sense_is_ua
= false;
800 int scsi_device_get_sense(SCSIDevice
*dev
, uint8_t *buf
, int len
, bool fixed
)
802 return scsi_convert_sense(dev
->sense
, dev
->sense_len
, buf
, len
, fixed
);
805 void scsi_req_build_sense(SCSIRequest
*req
, SCSISense sense
)
807 trace_scsi_req_build_sense(req
->dev
->id
, req
->lun
, req
->tag
,
808 sense
.key
, sense
.asc
, sense
.ascq
);
809 req
->sense_len
= scsi_build_sense(req
->sense
, sense
);
812 static void scsi_req_enqueue_internal(SCSIRequest
*req
)
814 assert(!req
->enqueued
);
816 if (req
->bus
->info
->get_sg_list
) {
817 req
->sg
= req
->bus
->info
->get_sg_list(req
);
821 req
->enqueued
= true;
822 QTAILQ_INSERT_TAIL(&req
->dev
->requests
, req
, next
);
825 int32_t scsi_req_enqueue(SCSIRequest
*req
)
830 scsi_req_enqueue_internal(req
);
832 rc
= req
->ops
->send_command(req
, req
->cmd
.buf
);
837 static void scsi_req_dequeue(SCSIRequest
*req
)
839 trace_scsi_req_dequeue(req
->dev
->id
, req
->lun
, req
->tag
);
842 QTAILQ_REMOVE(&req
->dev
->requests
, req
, next
);
843 req
->enqueued
= false;
848 static int scsi_get_performance_length(int num_desc
, int type
, int data_type
)
850 /* MMC-6, paragraph 6.7. */
853 if ((data_type
& 3) == 0) {
854 /* Each descriptor is as in Table 295 - Nominal performance. */
855 return 16 * num_desc
+ 8;
857 /* Each descriptor is as in Table 296 - Exceptions. */
858 return 6 * num_desc
+ 8;
863 return 8 * num_desc
+ 8;
865 return 2048 * num_desc
+ 8;
867 return 16 * num_desc
+ 8;
873 static int ata_passthrough_xfer_unit(SCSIDevice
*dev
, uint8_t *buf
)
875 int byte_block
= (buf
[2] >> 2) & 0x1;
876 int type
= (buf
[2] >> 4) & 0x1;
881 xfer_unit
= dev
->blocksize
;
892 static int ata_passthrough_12_xfer(SCSIDevice
*dev
, uint8_t *buf
)
894 int length
= buf
[2] & 0x3;
896 int unit
= ata_passthrough_xfer_unit(dev
, buf
);
900 case 3: /* USB-specific. */
915 static int ata_passthrough_16_xfer(SCSIDevice
*dev
, uint8_t *buf
)
917 int extend
= buf
[1] & 0x1;
918 int length
= buf
[2] & 0x3;
920 int unit
= ata_passthrough_xfer_unit(dev
, buf
);
924 case 3: /* USB-specific. */
930 xfer
|= (extend
? buf
[3] << 8 : 0);
934 xfer
|= (extend
? buf
[5] << 8 : 0);
941 static int scsi_req_xfer(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
943 cmd
->xfer
= scsi_cdb_xfer(buf
);
945 case TEST_UNIT_READY
:
949 case WRITE_FILEMARKS
:
950 case WRITE_FILEMARKS_16
:
955 case ALLOW_MEDIUM_REMOVAL
:
957 case SYNCHRONIZE_CACHE
:
958 case SYNCHRONIZE_CACHE_16
:
960 case LOCK_UNLOCK_CACHE
:
969 case ALLOW_OVERWRITE
:
975 if ((buf
[1] & 2) == 0) {
977 } else if ((buf
[1] & 4) != 0) {
980 cmd
->xfer
*= dev
->blocksize
;
986 cmd
->xfer
= buf
[1] & 1 ? 0 : dev
->blocksize
;
988 case READ_CAPACITY_10
:
991 case READ_BLOCK_LIMITS
:
994 case SEND_VOLUME_TAG
:
995 /* GPCMD_SET_STREAMING from multimedia commands. */
996 if (dev
->type
== TYPE_ROM
) {
997 cmd
->xfer
= buf
[10] | (buf
[9] << 8);
999 cmd
->xfer
= buf
[9] | (buf
[8] << 8);
1003 /* length 0 means 256 blocks */
1004 if (cmd
->xfer
== 0) {
1009 case WRITE_VERIFY_10
:
1011 case WRITE_VERIFY_12
:
1013 case WRITE_VERIFY_16
:
1014 cmd
->xfer
*= dev
->blocksize
;
1018 /* length 0 means 256 blocks */
1019 if (cmd
->xfer
== 0) {
1026 cmd
->xfer
*= dev
->blocksize
;
1029 /* MMC mandates the parameter list to be 12-bytes long. Parameters
1030 * for block devices are restricted to the header right now. */
1031 if (dev
->type
== TYPE_ROM
&& (buf
[1] & 16)) {
1034 cmd
->xfer
= (buf
[1] & 16) == 0 ? 0 : (buf
[1] & 32 ? 8 : 4);
1038 case RECEIVE_DIAGNOSTIC
:
1039 case SEND_DIAGNOSTIC
:
1040 cmd
->xfer
= buf
[4] | (buf
[3] << 8);
1045 case SEND_CUE_SHEET
:
1046 cmd
->xfer
= buf
[8] | (buf
[7] << 8) | (buf
[6] << 16);
1048 case PERSISTENT_RESERVE_OUT
:
1049 cmd
->xfer
= ldl_be_p(&buf
[5]) & 0xffffffffULL
;
1052 if (dev
->type
== TYPE_ROM
) {
1053 /* MMC command GET PERFORMANCE. */
1054 cmd
->xfer
= scsi_get_performance_length(buf
[9] | (buf
[8] << 8),
1055 buf
[10], buf
[1] & 0x1f);
1058 case MECHANISM_STATUS
:
1059 case READ_DVD_STRUCTURE
:
1060 case SEND_DVD_STRUCTURE
:
1061 case MAINTENANCE_OUT
:
1062 case MAINTENANCE_IN
:
1063 if (dev
->type
== TYPE_ROM
) {
1064 /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */
1065 cmd
->xfer
= buf
[9] | (buf
[8] << 8);
1068 case ATA_PASSTHROUGH_12
:
1069 if (dev
->type
== TYPE_ROM
) {
1070 /* BLANK command of MMC */
1073 cmd
->xfer
= ata_passthrough_12_xfer(dev
, buf
);
1076 case ATA_PASSTHROUGH_16
:
1077 cmd
->xfer
= ata_passthrough_16_xfer(dev
, buf
);
1083 static int scsi_req_stream_xfer(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
1086 /* stream commands */
1093 case RECOVER_BUFFERED_DATA
:
1095 cmd
->xfer
= buf
[4] | (buf
[3] << 8) | (buf
[2] << 16);
1096 if (buf
[1] & 0x01) { /* fixed */
1097 cmd
->xfer
*= dev
->blocksize
;
1101 case READ_REVERSE_16
:
1104 cmd
->xfer
= buf
[14] | (buf
[13] << 8) | (buf
[12] << 16);
1105 if (buf
[1] & 0x01) { /* fixed */
1106 cmd
->xfer
*= dev
->blocksize
;
1114 cmd
->xfer
= buf
[13] | (buf
[12] << 8);
1117 switch (buf
[1] & 0x1f) /* operation code */ {
1118 case SHORT_FORM_BLOCK_ID
:
1119 case SHORT_FORM_VENDOR_SPECIFIC
:
1126 cmd
->xfer
= buf
[8] | (buf
[7] << 8);
1134 cmd
->xfer
= buf
[4] | (buf
[3] << 8);
1136 /* generic commands */
1138 return scsi_req_xfer(cmd
, dev
, buf
);
1143 static int scsi_req_medium_changer_xfer(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
1146 /* medium changer commands */
1147 case EXCHANGE_MEDIUM
:
1148 case INITIALIZE_ELEMENT_STATUS
:
1149 case INITIALIZE_ELEMENT_STATUS_WITH_RANGE
:
1151 case POSITION_TO_ELEMENT
:
1154 case READ_ELEMENT_STATUS
:
1155 cmd
->xfer
= buf
[9] | (buf
[8] << 8) | (buf
[7] << 16);
1158 /* generic commands */
1160 return scsi_req_xfer(cmd
, dev
, buf
);
1165 static int scsi_req_scanner_length(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
1168 /* Scanner commands */
1169 case OBJECT_POSITION
:
1179 cmd
->xfer
= buf
[8] | (buf
[7] << 8) | (buf
[6] << 16);
1182 /* GET_DATA_BUFFER_STATUS xfer handled by scsi_req_xfer */
1183 return scsi_req_xfer(cmd
, dev
, buf
);
1189 static void scsi_cmd_xfer_mode(SCSICommand
*cmd
)
1192 cmd
->mode
= SCSI_XFER_NONE
;
1195 switch (cmd
->buf
[0]) {
1198 case WRITE_VERIFY_10
:
1200 case WRITE_VERIFY_12
:
1202 case WRITE_VERIFY_16
:
1209 case CHANGE_DEFINITION
:
1212 case MODE_SELECT_10
:
1213 case SEND_DIAGNOSTIC
:
1216 case REASSIGN_BLOCKS
:
1225 case SEARCH_HIGH_12
:
1226 case SEARCH_EQUAL_12
:
1229 case SEND_VOLUME_TAG
:
1230 case SEND_CUE_SHEET
:
1231 case SEND_DVD_STRUCTURE
:
1232 case PERSISTENT_RESERVE_OUT
:
1233 case MAINTENANCE_OUT
:
1236 /* SCAN conflicts with START_STOP. START_STOP has cmd->xfer set to 0 for
1237 * non-scanner devices, so we only get here for SCAN and not for START_STOP.
1239 cmd
->mode
= SCSI_XFER_TO_DEV
;
1241 case ATA_PASSTHROUGH_12
:
1242 case ATA_PASSTHROUGH_16
:
1244 cmd
->mode
= (cmd
->buf
[2] & 0x8) ?
1245 SCSI_XFER_FROM_DEV
: SCSI_XFER_TO_DEV
;
1248 cmd
->mode
= SCSI_XFER_FROM_DEV
;
1253 int scsi_req_parse_cdb(SCSIDevice
*dev
, SCSICommand
*cmd
, uint8_t *buf
)
1259 len
= scsi_cdb_length(buf
);
1265 switch (dev
->type
) {
1267 rc
= scsi_req_stream_xfer(cmd
, dev
, buf
);
1269 case TYPE_MEDIUM_CHANGER
:
1270 rc
= scsi_req_medium_changer_xfer(cmd
, dev
, buf
);
1273 rc
= scsi_req_scanner_length(cmd
, dev
, buf
);
1276 rc
= scsi_req_xfer(cmd
, dev
, buf
);
1283 memcpy(cmd
->buf
, buf
, cmd
->len
);
1284 scsi_cmd_xfer_mode(cmd
);
1285 cmd
->lba
= scsi_cmd_lba(cmd
);
1289 void scsi_device_report_change(SCSIDevice
*dev
, SCSISense sense
)
1291 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, dev
->qdev
.parent_bus
);
1293 scsi_device_set_ua(dev
, sense
);
1294 if (bus
->info
->change
) {
1295 bus
->info
->change(bus
, dev
, sense
);
1299 SCSIRequest
*scsi_req_ref(SCSIRequest
*req
)
1301 assert(req
->refcount
> 0);
1306 void scsi_req_unref(SCSIRequest
*req
)
1308 assert(req
->refcount
> 0);
1309 if (--req
->refcount
== 0) {
1310 BusState
*qbus
= req
->dev
->qdev
.parent_bus
;
1311 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, qbus
);
1313 if (bus
->info
->free_request
&& req
->hba_private
) {
1314 bus
->info
->free_request(bus
, req
->hba_private
);
1316 if (req
->ops
->free_req
) {
1317 req
->ops
->free_req(req
);
1319 object_unref(OBJECT(req
->dev
));
1320 object_unref(OBJECT(qbus
->parent
));
1325 /* Tell the device that we finished processing this chunk of I/O. It
1326 will start the next chunk or complete the command. */
1327 void scsi_req_continue(SCSIRequest
*req
)
1329 if (req
->io_canceled
) {
1330 trace_scsi_req_continue_canceled(req
->dev
->id
, req
->lun
, req
->tag
);
1333 trace_scsi_req_continue(req
->dev
->id
, req
->lun
, req
->tag
);
1334 if (req
->cmd
.mode
== SCSI_XFER_TO_DEV
) {
1335 req
->ops
->write_data(req
);
1337 req
->ops
->read_data(req
);
1341 /* Called by the devices when data is ready for the HBA. The HBA should
1342 start a DMA operation to read or fill the device's data buffer.
1343 Once it completes, calling scsi_req_continue will restart I/O. */
1344 void scsi_req_data(SCSIRequest
*req
, int len
)
1347 if (req
->io_canceled
) {
1348 trace_scsi_req_data_canceled(req
->dev
->id
, req
->lun
, req
->tag
, len
);
1351 trace_scsi_req_data(req
->dev
->id
, req
->lun
, req
->tag
, len
);
1352 assert(req
->cmd
.mode
!= SCSI_XFER_NONE
);
1355 req
->bus
->info
->transfer_data(req
, len
);
1359 /* If the device calls scsi_req_data and the HBA specified a
1360 * scatter/gather list, the transfer has to happen in a single
1362 assert(!req
->dma_started
);
1363 req
->dma_started
= true;
1365 buf
= scsi_req_get_buf(req
);
1366 if (req
->cmd
.mode
== SCSI_XFER_FROM_DEV
) {
1367 req
->resid
= dma_buf_read(buf
, len
, req
->sg
);
1369 req
->resid
= dma_buf_write(buf
, len
, req
->sg
);
1371 scsi_req_continue(req
);
1374 void scsi_req_print(SCSIRequest
*req
)
1379 fprintf(fp
, "[%s id=%d] %s",
1380 req
->dev
->qdev
.parent_bus
->name
,
1382 scsi_command_name(req
->cmd
.buf
[0]));
1383 for (i
= 1; i
< req
->cmd
.len
; i
++) {
1384 fprintf(fp
, " 0x%02x", req
->cmd
.buf
[i
]);
1386 switch (req
->cmd
.mode
) {
1387 case SCSI_XFER_NONE
:
1388 fprintf(fp
, " - none\n");
1390 case SCSI_XFER_FROM_DEV
:
1391 fprintf(fp
, " - from-dev len=%zd\n", req
->cmd
.xfer
);
1393 case SCSI_XFER_TO_DEV
:
1394 fprintf(fp
, " - to-dev len=%zd\n", req
->cmd
.xfer
);
1397 fprintf(fp
, " - Oops\n");
1402 void scsi_req_complete(SCSIRequest
*req
, int status
)
1404 assert(req
->status
== -1);
1405 req
->status
= status
;
1407 assert(req
->sense_len
<= sizeof(req
->sense
));
1408 if (status
== GOOD
) {
1412 if (req
->sense_len
) {
1413 memcpy(req
->dev
->sense
, req
->sense
, req
->sense_len
);
1414 req
->dev
->sense_len
= req
->sense_len
;
1415 req
->dev
->sense_is_ua
= (req
->ops
== &reqops_unit_attention
);
1417 req
->dev
->sense_len
= 0;
1418 req
->dev
->sense_is_ua
= false;
1422 * Unit attention state is now stored in the device's sense buffer
1423 * if the HBA didn't do autosense. Clear the pending unit attention
1426 scsi_clear_unit_attention(req
);
1429 scsi_req_dequeue(req
);
1430 req
->bus
->info
->complete(req
, req
->status
, req
->resid
);
1432 /* Cancelled requests might end up being completed instead of cancelled */
1433 notifier_list_notify(&req
->cancel_notifiers
, req
);
1434 scsi_req_unref(req
);
1437 /* Called by the devices when the request is canceled. */
1438 void scsi_req_cancel_complete(SCSIRequest
*req
)
1440 assert(req
->io_canceled
);
1441 if (req
->bus
->info
->cancel
) {
1442 req
->bus
->info
->cancel(req
);
1444 notifier_list_notify(&req
->cancel_notifiers
, req
);
1445 scsi_req_unref(req
);
1448 /* Cancel @req asynchronously. @notifier is added to @req's cancellation
1449 * notifier list, the bus will be notified the requests cancellation is
1452 void scsi_req_cancel_async(SCSIRequest
*req
, Notifier
*notifier
)
1454 trace_scsi_req_cancel(req
->dev
->id
, req
->lun
, req
->tag
);
1456 notifier_list_add(&req
->cancel_notifiers
, notifier
);
1458 if (req
->io_canceled
) {
1459 /* A blk_aio_cancel_async is pending; when it finishes,
1460 * scsi_req_cancel_complete will be called and will
1461 * call the notifier we just added. Just wait for that.
1466 /* Dropped in scsi_req_cancel_complete. */
1468 scsi_req_dequeue(req
);
1469 req
->io_canceled
= true;
1471 blk_aio_cancel_async(req
->aiocb
);
1473 scsi_req_cancel_complete(req
);
1477 void scsi_req_cancel(SCSIRequest
*req
)
1479 trace_scsi_req_cancel(req
->dev
->id
, req
->lun
, req
->tag
);
1480 if (!req
->enqueued
) {
1483 assert(!req
->io_canceled
);
1484 /* Dropped in scsi_req_cancel_complete. */
1486 scsi_req_dequeue(req
);
1487 req
->io_canceled
= true;
1489 blk_aio_cancel(req
->aiocb
);
1491 scsi_req_cancel_complete(req
);
1495 static int scsi_ua_precedence(SCSISense sense
)
1497 if (sense
.key
!= UNIT_ATTENTION
) {
1500 if (sense
.asc
== 0x29 && sense
.ascq
== 0x04) {
1501 /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */
1503 } else if (sense
.asc
== 0x3F && sense
.ascq
== 0x01) {
1504 /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */
1506 } else if (sense
.asc
== 0x29 && (sense
.ascq
== 0x05 || sense
.ascq
== 0x06)) {
1507 /* These two go with "all others". */
1509 } else if (sense
.asc
== 0x29 && sense
.ascq
<= 0x07) {
1510 /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0
1511 * POWER ON OCCURRED = 1
1512 * SCSI BUS RESET OCCURRED = 2
1513 * BUS DEVICE RESET FUNCTION OCCURRED = 3
1514 * I_T NEXUS LOSS OCCURRED = 7
1517 } else if (sense
.asc
== 0x2F && sense
.ascq
== 0x01) {
1518 /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */
1521 return (sense
.asc
<< 8) | sense
.ascq
;
1524 void scsi_device_set_ua(SCSIDevice
*sdev
, SCSISense sense
)
1527 if (sense
.key
!= UNIT_ATTENTION
) {
1530 trace_scsi_device_set_ua(sdev
->id
, sdev
->lun
, sense
.key
,
1531 sense
.asc
, sense
.ascq
);
1534 * Override a pre-existing unit attention condition, except for a more
1535 * important reset condition.
1537 prec1
= scsi_ua_precedence(sdev
->unit_attention
);
1538 prec2
= scsi_ua_precedence(sense
);
1539 if (prec2
< prec1
) {
1540 sdev
->unit_attention
= sense
;
1544 void scsi_device_purge_requests(SCSIDevice
*sdev
, SCSISense sense
)
1548 aio_context_acquire(blk_get_aio_context(sdev
->conf
.blk
));
1549 while (!QTAILQ_EMPTY(&sdev
->requests
)) {
1550 req
= QTAILQ_FIRST(&sdev
->requests
);
1551 scsi_req_cancel_async(req
, NULL
);
1553 blk_drain(sdev
->conf
.blk
);
1554 aio_context_release(blk_get_aio_context(sdev
->conf
.blk
));
1555 scsi_device_set_ua(sdev
, sense
);
1558 static char *scsibus_get_dev_path(DeviceState
*dev
)
1560 SCSIDevice
*d
= SCSI_DEVICE(dev
);
1561 DeviceState
*hba
= dev
->parent_bus
->parent
;
1565 id
= qdev_get_dev_path(hba
);
1567 path
= g_strdup_printf("%s/%d:%d:%d", id
, d
->channel
, d
->id
, d
->lun
);
1569 path
= g_strdup_printf("%d:%d:%d", d
->channel
, d
->id
, d
->lun
);
1575 static char *scsibus_get_fw_dev_path(DeviceState
*dev
)
1577 SCSIDevice
*d
= SCSI_DEVICE(dev
);
1578 return g_strdup_printf("channel@%x/%s@%x,%x", d
->channel
,
1579 qdev_fw_name(dev
), d
->id
, d
->lun
);
1582 SCSIDevice
*scsi_device_find(SCSIBus
*bus
, int channel
, int id
, int lun
)
1585 SCSIDevice
*target_dev
= NULL
;
1587 QTAILQ_FOREACH_REVERSE(kid
, &bus
->qbus
.children
, sibling
) {
1588 DeviceState
*qdev
= kid
->child
;
1589 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
1591 if (dev
->channel
== channel
&& dev
->id
== id
) {
1592 if (dev
->lun
== lun
) {
1601 /* SCSI request list. For simplicity, pv points to the whole device */
1603 static int put_scsi_requests(QEMUFile
*f
, void *pv
, size_t size
,
1604 const VMStateField
*field
, QJSON
*vmdesc
)
1607 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, s
->qdev
.parent_bus
);
1610 QTAILQ_FOREACH(req
, &s
->requests
, next
) {
1611 assert(!req
->io_canceled
);
1612 assert(req
->status
== -1);
1613 assert(req
->enqueued
);
1615 qemu_put_sbyte(f
, req
->retry
? 1 : 2);
1616 qemu_put_buffer(f
, req
->cmd
.buf
, sizeof(req
->cmd
.buf
));
1617 qemu_put_be32s(f
, &req
->tag
);
1618 qemu_put_be32s(f
, &req
->lun
);
1619 if (bus
->info
->save_request
) {
1620 bus
->info
->save_request(f
, req
);
1622 if (req
->ops
->save_request
) {
1623 req
->ops
->save_request(f
, req
);
1626 qemu_put_sbyte(f
, 0);
1631 static int get_scsi_requests(QEMUFile
*f
, void *pv
, size_t size
,
1632 const VMStateField
*field
)
1635 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, s
->qdev
.parent_bus
);
1638 while ((sbyte
= qemu_get_sbyte(f
)) > 0) {
1639 uint8_t buf
[SCSI_CMD_BUF_SIZE
];
1644 qemu_get_buffer(f
, buf
, sizeof(buf
));
1645 qemu_get_be32s(f
, &tag
);
1646 qemu_get_be32s(f
, &lun
);
1647 req
= scsi_req_new(s
, tag
, lun
, buf
, NULL
);
1648 req
->retry
= (sbyte
== 1);
1649 if (bus
->info
->load_request
) {
1650 req
->hba_private
= bus
->info
->load_request(f
, req
);
1652 if (req
->ops
->load_request
) {
1653 req
->ops
->load_request(f
, req
);
1656 /* Just restart it later. */
1657 scsi_req_enqueue_internal(req
);
1659 /* At this point, the request will be kept alive by the reference
1660 * added by scsi_req_enqueue_internal, so we can release our reference.
1661 * The HBA of course will add its own reference in the load_request
1662 * callback if it needs to hold on the SCSIRequest.
1664 scsi_req_unref(req
);
1670 static const VMStateInfo vmstate_info_scsi_requests
= {
1671 .name
= "scsi-requests",
1672 .get
= get_scsi_requests
,
1673 .put
= put_scsi_requests
,
1676 static bool scsi_sense_state_needed(void *opaque
)
1678 SCSIDevice
*s
= opaque
;
1680 return s
->sense_len
> SCSI_SENSE_BUF_SIZE_OLD
;
1683 static const VMStateDescription vmstate_scsi_sense_state
= {
1684 .name
= "SCSIDevice/sense",
1686 .minimum_version_id
= 1,
1687 .needed
= scsi_sense_state_needed
,
1688 .fields
= (VMStateField
[]) {
1689 VMSTATE_UINT8_SUB_ARRAY(sense
, SCSIDevice
,
1690 SCSI_SENSE_BUF_SIZE_OLD
,
1691 SCSI_SENSE_BUF_SIZE
- SCSI_SENSE_BUF_SIZE_OLD
),
1692 VMSTATE_END_OF_LIST()
1696 const VMStateDescription vmstate_scsi_device
= {
1697 .name
= "SCSIDevice",
1699 .minimum_version_id
= 1,
1700 .fields
= (VMStateField
[]) {
1701 VMSTATE_UINT8(unit_attention
.key
, SCSIDevice
),
1702 VMSTATE_UINT8(unit_attention
.asc
, SCSIDevice
),
1703 VMSTATE_UINT8(unit_attention
.ascq
, SCSIDevice
),
1704 VMSTATE_BOOL(sense_is_ua
, SCSIDevice
),
1705 VMSTATE_UINT8_SUB_ARRAY(sense
, SCSIDevice
, 0, SCSI_SENSE_BUF_SIZE_OLD
),
1706 VMSTATE_UINT32(sense_len
, SCSIDevice
),
1710 .field_exists
= NULL
,
1711 .size
= 0, /* ouch */
1712 .info
= &vmstate_info_scsi_requests
,
1713 .flags
= VMS_SINGLE
,
1716 VMSTATE_END_OF_LIST()
1718 .subsections
= (const VMStateDescription
*[]) {
1719 &vmstate_scsi_sense_state
,
1724 static void scsi_device_class_init(ObjectClass
*klass
, void *data
)
1726 DeviceClass
*k
= DEVICE_CLASS(klass
);
1727 set_bit(DEVICE_CATEGORY_STORAGE
, k
->categories
);
1728 k
->bus_type
= TYPE_SCSI_BUS
;
1729 k
->realize
= scsi_qdev_realize
;
1730 k
->unrealize
= scsi_qdev_unrealize
;
1731 k
->props
= scsi_props
;
1734 static void scsi_dev_instance_init(Object
*obj
)
1736 DeviceState
*dev
= DEVICE(obj
);
1737 SCSIDevice
*s
= SCSI_DEVICE(dev
);
1739 device_add_bootindex_property(obj
, &s
->conf
.bootindex
,
1744 static const TypeInfo scsi_device_type_info
= {
1745 .name
= TYPE_SCSI_DEVICE
,
1746 .parent
= TYPE_DEVICE
,
1747 .instance_size
= sizeof(SCSIDevice
),
1749 .class_size
= sizeof(SCSIDeviceClass
),
1750 .class_init
= scsi_device_class_init
,
1751 .instance_init
= scsi_dev_instance_init
,
1754 static void scsi_register_types(void)
1756 type_register_static(&scsi_bus_info
);
1757 type_register_static(&scsi_device_type_info
);
1760 type_init(scsi_register_types
)