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
)
64 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(s
);
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
));
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
)
227 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
230 qemu_del_vm_change_state_handler(dev
->vmsentry
);
233 scsi_device_purge_requests(dev
, SENSE_CODE(NO_SENSE
));
235 scsi_device_unrealize(dev
);
237 blockdev_mark_auto_del(dev
->conf
.blk
);
240 /* handle legacy '-drive if=scsi,...' cmd line args */
241 SCSIDevice
*scsi_bus_legacy_add_drive(SCSIBus
*bus
, BlockBackend
*blk
,
242 int unit
, bool removable
, int bootindex
,
244 BlockdevOnError rerror
,
245 BlockdevOnError werror
,
246 const char *serial
, Error
**errp
)
254 if (blk_is_sg(blk
)) {
255 driver
= "scsi-generic";
257 dinfo
= blk_legacy_dinfo(blk
);
258 if (dinfo
&& dinfo
->media_cd
) {
264 dev
= qdev_new(driver
);
265 name
= g_strdup_printf("legacy[%d]", unit
);
266 object_property_add_child(OBJECT(bus
), name
, OBJECT(dev
));
269 qdev_prop_set_uint32(dev
, "scsi-id", unit
);
270 if (bootindex
>= 0) {
271 object_property_set_int(OBJECT(dev
), "bootindex", bootindex
,
274 if (object_property_find(OBJECT(dev
), "removable", NULL
)) {
275 qdev_prop_set_bit(dev
, "removable", removable
);
277 if (serial
&& object_property_find(OBJECT(dev
), "serial", NULL
)) {
278 qdev_prop_set_string(dev
, "serial", serial
);
280 qdev_prop_set_drive_err(dev
, "drive", blk
, &err
);
282 error_propagate(errp
, err
);
283 object_unparent(OBJECT(dev
));
286 if (!object_property_set_bool(OBJECT(dev
), "share-rw", share_rw
, &err
)) {
287 error_propagate(errp
, err
);
288 object_unparent(OBJECT(dev
));
292 qdev_prop_set_enum(dev
, "rerror", rerror
);
293 qdev_prop_set_enum(dev
, "werror", werror
);
295 if (!qdev_realize_and_unref(dev
, &bus
->qbus
, &err
)) {
296 error_propagate(errp
, err
);
297 object_unparent(OBJECT(dev
));
300 return SCSI_DEVICE(dev
);
303 void scsi_bus_legacy_handle_cmdline(SCSIBus
*bus
)
310 for (unit
= 0; unit
<= bus
->info
->max_target
; unit
++) {
311 dinfo
= drive_get(IF_SCSI
, bus
->busnr
, unit
);
315 qemu_opts_loc_restore(dinfo
->opts
);
316 scsi_bus_legacy_add_drive(bus
, blk_by_legacy_dinfo(dinfo
),
317 unit
, false, -1, false,
318 BLOCKDEV_ON_ERROR_AUTO
,
319 BLOCKDEV_ON_ERROR_AUTO
,
325 static int32_t scsi_invalid_field(SCSIRequest
*req
, uint8_t *buf
)
327 scsi_req_build_sense(req
, SENSE_CODE(INVALID_FIELD
));
328 scsi_req_complete(req
, CHECK_CONDITION
);
332 static const struct SCSIReqOps reqops_invalid_field
= {
333 .size
= sizeof(SCSIRequest
),
334 .send_command
= scsi_invalid_field
337 /* SCSIReqOps implementation for invalid commands. */
339 static int32_t scsi_invalid_command(SCSIRequest
*req
, uint8_t *buf
)
341 scsi_req_build_sense(req
, SENSE_CODE(INVALID_OPCODE
));
342 scsi_req_complete(req
, CHECK_CONDITION
);
346 static const struct SCSIReqOps reqops_invalid_opcode
= {
347 .size
= sizeof(SCSIRequest
),
348 .send_command
= scsi_invalid_command
351 /* SCSIReqOps implementation for unit attention conditions. */
353 static int32_t scsi_unit_attention(SCSIRequest
*req
, uint8_t *buf
)
355 if (req
->dev
->unit_attention
.key
== UNIT_ATTENTION
) {
356 scsi_req_build_sense(req
, req
->dev
->unit_attention
);
357 } else if (req
->bus
->unit_attention
.key
== UNIT_ATTENTION
) {
358 scsi_req_build_sense(req
, req
->bus
->unit_attention
);
360 scsi_req_complete(req
, CHECK_CONDITION
);
364 static const struct SCSIReqOps reqops_unit_attention
= {
365 .size
= sizeof(SCSIRequest
),
366 .send_command
= scsi_unit_attention
369 /* SCSIReqOps implementation for REPORT LUNS and for commands sent to
372 typedef struct SCSITargetReq SCSITargetReq
;
374 struct SCSITargetReq
{
381 static void store_lun(uint8_t *outbuf
, int lun
)
387 outbuf
[1] = (lun
& 255);
388 outbuf
[0] = (lun
>> 8) | 0x40;
391 static bool scsi_target_emulate_report_luns(SCSITargetReq
*r
)
398 if (r
->req
.cmd
.xfer
< 16) {
401 if (r
->req
.cmd
.buf
[2] > 2) {
404 channel
= r
->req
.dev
->channel
;
408 QTAILQ_FOREACH(kid
, &r
->req
.bus
->qbus
.children
, sibling
) {
409 DeviceState
*qdev
= kid
->child
;
410 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
412 if (dev
->channel
== channel
&& dev
->id
== id
) {
423 scsi_target_alloc_buf(&r
->req
, n
+ 8);
425 len
= MIN(n
+ 8, r
->req
.cmd
.xfer
& ~7);
426 memset(r
->buf
, 0, len
);
427 stl_be_p(&r
->buf
[0], n
);
428 i
= found_lun0
? 8 : 16;
429 QTAILQ_FOREACH(kid
, &r
->req
.bus
->qbus
.children
, sibling
) {
430 DeviceState
*qdev
= kid
->child
;
431 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
433 if (dev
->channel
== channel
&& dev
->id
== id
) {
434 store_lun(&r
->buf
[i
], dev
->lun
);
443 static bool scsi_target_emulate_inquiry(SCSITargetReq
*r
)
445 assert(r
->req
.dev
->lun
!= r
->req
.lun
);
447 scsi_target_alloc_buf(&r
->req
, SCSI_INQUIRY_LEN
);
449 if (r
->req
.cmd
.buf
[1] & 0x2) {
450 /* Command support data - optional, not implemented */
454 if (r
->req
.cmd
.buf
[1] & 0x1) {
455 /* Vital product data */
456 uint8_t page_code
= r
->req
.cmd
.buf
[2];
457 r
->buf
[r
->len
++] = page_code
; /* this page */
458 r
->buf
[r
->len
++] = 0x00;
461 case 0x00: /* Supported page codes, mandatory */
465 r
->buf
[r
->len
++] = 0x00; /* list of supported pages (this page) */
466 r
->buf
[pages
] = r
->len
- pages
- 1; /* number of pages */
473 assert(r
->len
< r
->buf_len
);
474 r
->len
= MIN(r
->req
.cmd
.xfer
, r
->len
);
478 /* Standard INQUIRY data */
479 if (r
->req
.cmd
.buf
[2] != 0) {
484 r
->len
= MIN(r
->req
.cmd
.xfer
, SCSI_INQUIRY_LEN
);
485 memset(r
->buf
, 0, r
->len
);
486 if (r
->req
.lun
!= 0) {
487 r
->buf
[0] = TYPE_NO_LUN
;
489 r
->buf
[0] = TYPE_NOT_PRESENT
| TYPE_INACTIVE
;
490 r
->buf
[2] = 5; /* Version */
491 r
->buf
[3] = 2 | 0x10; /* HiSup, response data format */
492 r
->buf
[4] = r
->len
- 5; /* Additional Length = (Len - 1) - 4 */
493 r
->buf
[7] = 0x10 | (r
->req
.bus
->info
->tcq
? 0x02 : 0); /* Sync, TCQ. */
494 memcpy(&r
->buf
[8], "QEMU ", 8);
495 memcpy(&r
->buf
[16], "QEMU TARGET ", 16);
496 pstrcpy((char *) &r
->buf
[32], 4, qemu_hw_version());
501 static size_t scsi_sense_len(SCSIRequest
*req
)
503 if (req
->dev
->type
== TYPE_SCANNER
)
504 return SCSI_SENSE_LEN_SCANNER
;
506 return SCSI_SENSE_LEN
;
509 static int32_t scsi_target_send_command(SCSIRequest
*req
, uint8_t *buf
)
511 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
512 int fixed_sense
= (req
->cmd
.buf
[1] & 1) == 0;
515 buf
[0] != INQUIRY
&& buf
[0] != REQUEST_SENSE
) {
516 scsi_req_build_sense(req
, SENSE_CODE(LUN_NOT_SUPPORTED
));
517 scsi_req_complete(req
, CHECK_CONDITION
);
522 if (!scsi_target_emulate_report_luns(r
)) {
523 goto illegal_request
;
527 if (!scsi_target_emulate_inquiry(r
)) {
528 goto illegal_request
;
532 scsi_target_alloc_buf(&r
->req
, scsi_sense_len(req
));
534 const struct SCSISense sense
= SENSE_CODE(LUN_NOT_SUPPORTED
);
536 r
->len
= scsi_build_sense_buf(r
->buf
, req
->cmd
.xfer
,
539 r
->len
= scsi_device_get_sense(r
->req
.dev
, r
->buf
,
540 MIN(req
->cmd
.xfer
, r
->buf_len
),
543 if (r
->req
.dev
->sense_is_ua
) {
544 scsi_device_unit_attention_reported(req
->dev
);
545 r
->req
.dev
->sense_len
= 0;
546 r
->req
.dev
->sense_is_ua
= false;
549 case TEST_UNIT_READY
:
552 scsi_req_build_sense(req
, SENSE_CODE(INVALID_OPCODE
));
553 scsi_req_complete(req
, CHECK_CONDITION
);
556 scsi_req_build_sense(req
, SENSE_CODE(INVALID_FIELD
));
557 scsi_req_complete(req
, CHECK_CONDITION
);
562 scsi_req_complete(req
, GOOD
);
567 static void scsi_target_read_data(SCSIRequest
*req
)
569 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
575 scsi_req_data(&r
->req
, n
);
577 scsi_req_complete(&r
->req
, GOOD
);
581 static uint8_t *scsi_target_get_buf(SCSIRequest
*req
)
583 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
588 static uint8_t *scsi_target_alloc_buf(SCSIRequest
*req
, size_t len
)
590 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
592 r
->buf
= g_malloc(len
);
598 static void scsi_target_free_buf(SCSIRequest
*req
)
600 SCSITargetReq
*r
= DO_UPCAST(SCSITargetReq
, req
, req
);
605 static const struct SCSIReqOps reqops_target_command
= {
606 .size
= sizeof(SCSITargetReq
),
607 .send_command
= scsi_target_send_command
,
608 .read_data
= scsi_target_read_data
,
609 .get_buf
= scsi_target_get_buf
,
610 .free_req
= scsi_target_free_buf
,
614 SCSIRequest
*scsi_req_alloc(const SCSIReqOps
*reqops
, SCSIDevice
*d
,
615 uint32_t tag
, uint32_t lun
, void *hba_private
)
618 SCSIBus
*bus
= scsi_bus_from_device(d
);
619 BusState
*qbus
= BUS(bus
);
620 const int memset_off
= offsetof(SCSIRequest
, sense
)
621 + sizeof(req
->sense
);
623 req
= g_malloc(reqops
->size
);
624 memset((uint8_t *)req
+ memset_off
, 0, reqops
->size
- memset_off
);
630 req
->hba_private
= hba_private
;
633 object_ref(OBJECT(d
));
634 object_ref(OBJECT(qbus
->parent
));
635 notifier_list_init(&req
->cancel_notifiers
);
636 trace_scsi_req_alloc(req
->dev
->id
, req
->lun
, req
->tag
);
640 SCSIRequest
*scsi_req_new(SCSIDevice
*d
, uint32_t tag
, uint32_t lun
,
641 uint8_t *buf
, void *hba_private
)
643 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, d
->qdev
.parent_bus
);
644 const SCSIReqOps
*ops
;
645 SCSIDeviceClass
*sc
= SCSI_DEVICE_GET_CLASS(d
);
647 SCSICommand cmd
= { .len
= 0 };
650 if ((d
->unit_attention
.key
== UNIT_ATTENTION
||
651 bus
->unit_attention
.key
== UNIT_ATTENTION
) &&
652 (buf
[0] != INQUIRY
&&
653 buf
[0] != REPORT_LUNS
&&
654 buf
[0] != GET_CONFIGURATION
&&
655 buf
[0] != GET_EVENT_STATUS_NOTIFICATION
&&
658 * If we already have a pending unit attention condition,
659 * report this one before triggering another one.
661 !(buf
[0] == REQUEST_SENSE
&& d
->sense_is_ua
))) {
662 ops
= &reqops_unit_attention
;
663 } else if (lun
!= d
->lun
||
664 buf
[0] == REPORT_LUNS
||
665 (buf
[0] == REQUEST_SENSE
&& d
->sense_len
)) {
666 ops
= &reqops_target_command
;
671 if (ops
!= NULL
|| !sc
->parse_cdb
) {
672 ret
= scsi_req_parse_cdb(d
, &cmd
, buf
);
674 ret
= sc
->parse_cdb(d
, &cmd
, buf
, hba_private
);
678 trace_scsi_req_parse_bad(d
->id
, lun
, tag
, buf
[0]);
679 req
= scsi_req_alloc(&reqops_invalid_opcode
, d
, tag
, lun
, hba_private
);
681 assert(cmd
.len
!= 0);
682 trace_scsi_req_parsed(d
->id
, lun
, tag
, buf
[0],
685 trace_scsi_req_parsed_lba(d
->id
, lun
, tag
, buf
[0],
689 if (cmd
.xfer
> INT32_MAX
) {
690 req
= scsi_req_alloc(&reqops_invalid_field
, d
, tag
, lun
, hba_private
);
692 req
= scsi_req_alloc(ops
, d
, tag
, lun
, hba_private
);
694 req
= scsi_device_alloc_req(d
, tag
, lun
, buf
, hba_private
);
699 req
->resid
= req
->cmd
.xfer
;
703 trace_scsi_inquiry(d
->id
, lun
, tag
, cmd
.buf
[1], cmd
.buf
[2]);
705 case TEST_UNIT_READY
:
706 trace_scsi_test_unit_ready(d
->id
, lun
, tag
);
709 trace_scsi_report_luns(d
->id
, lun
, tag
);
712 trace_scsi_request_sense(d
->id
, lun
, tag
);
721 uint8_t *scsi_req_get_buf(SCSIRequest
*req
)
723 return req
->ops
->get_buf(req
);
726 static void scsi_clear_unit_attention(SCSIRequest
*req
)
729 if (req
->dev
->unit_attention
.key
!= UNIT_ATTENTION
&&
730 req
->bus
->unit_attention
.key
!= UNIT_ATTENTION
) {
735 * If an INQUIRY command enters the enabled command state,
736 * the device server shall [not] clear any unit attention condition;
737 * See also MMC-6, paragraphs 6.5 and 6.6.2.
739 if (req
->cmd
.buf
[0] == INQUIRY
||
740 req
->cmd
.buf
[0] == GET_CONFIGURATION
||
741 req
->cmd
.buf
[0] == GET_EVENT_STATUS_NOTIFICATION
) {
745 if (req
->dev
->unit_attention
.key
== UNIT_ATTENTION
) {
746 ua
= &req
->dev
->unit_attention
;
748 ua
= &req
->bus
->unit_attention
;
752 * If a REPORT LUNS command enters the enabled command state, [...]
753 * the device server shall clear any pending unit attention condition
754 * with an additional sense code of REPORTED LUNS DATA HAS CHANGED.
756 if (req
->cmd
.buf
[0] == REPORT_LUNS
&&
757 !(ua
->asc
== SENSE_CODE(REPORTED_LUNS_CHANGED
).asc
&&
758 ua
->ascq
== SENSE_CODE(REPORTED_LUNS_CHANGED
).ascq
)) {
762 *ua
= SENSE_CODE(NO_SENSE
);
765 int scsi_req_get_sense(SCSIRequest
*req
, uint8_t *buf
, int len
)
770 if (!req
->sense_len
) {
774 ret
= scsi_convert_sense(req
->sense
, req
->sense_len
, buf
, len
, true);
777 * FIXME: clearing unit attention conditions upon autosense should be done
778 * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b
781 * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and
782 * 10b for HBAs that do not support it (do not call scsi_req_get_sense).
783 * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b.
785 if (req
->dev
->sense_is_ua
) {
786 scsi_device_unit_attention_reported(req
->dev
);
787 req
->dev
->sense_len
= 0;
788 req
->dev
->sense_is_ua
= false;
793 int scsi_device_get_sense(SCSIDevice
*dev
, uint8_t *buf
, int len
, bool fixed
)
795 return scsi_convert_sense(dev
->sense
, dev
->sense_len
, buf
, len
, fixed
);
798 void scsi_req_build_sense(SCSIRequest
*req
, SCSISense sense
)
800 trace_scsi_req_build_sense(req
->dev
->id
, req
->lun
, req
->tag
,
801 sense
.key
, sense
.asc
, sense
.ascq
);
802 req
->sense_len
= scsi_build_sense(req
->sense
, sense
);
805 static void scsi_req_enqueue_internal(SCSIRequest
*req
)
807 assert(!req
->enqueued
);
809 if (req
->bus
->info
->get_sg_list
) {
810 req
->sg
= req
->bus
->info
->get_sg_list(req
);
814 req
->enqueued
= true;
815 QTAILQ_INSERT_TAIL(&req
->dev
->requests
, req
, next
);
818 int32_t scsi_req_enqueue(SCSIRequest
*req
)
823 scsi_req_enqueue_internal(req
);
825 rc
= req
->ops
->send_command(req
, req
->cmd
.buf
);
830 static void scsi_req_dequeue(SCSIRequest
*req
)
832 trace_scsi_req_dequeue(req
->dev
->id
, req
->lun
, req
->tag
);
835 QTAILQ_REMOVE(&req
->dev
->requests
, req
, next
);
836 req
->enqueued
= false;
841 static int scsi_get_performance_length(int num_desc
, int type
, int data_type
)
843 /* MMC-6, paragraph 6.7. */
846 if ((data_type
& 3) == 0) {
847 /* Each descriptor is as in Table 295 - Nominal performance. */
848 return 16 * num_desc
+ 8;
850 /* Each descriptor is as in Table 296 - Exceptions. */
851 return 6 * num_desc
+ 8;
856 return 8 * num_desc
+ 8;
858 return 2048 * num_desc
+ 8;
860 return 16 * num_desc
+ 8;
866 static int ata_passthrough_xfer_unit(SCSIDevice
*dev
, uint8_t *buf
)
868 int byte_block
= (buf
[2] >> 2) & 0x1;
869 int type
= (buf
[2] >> 4) & 0x1;
874 xfer_unit
= dev
->blocksize
;
885 static int ata_passthrough_12_xfer(SCSIDevice
*dev
, uint8_t *buf
)
887 int length
= buf
[2] & 0x3;
889 int unit
= ata_passthrough_xfer_unit(dev
, buf
);
893 case 3: /* USB-specific. */
908 static int ata_passthrough_16_xfer(SCSIDevice
*dev
, uint8_t *buf
)
910 int extend
= buf
[1] & 0x1;
911 int length
= buf
[2] & 0x3;
913 int unit
= ata_passthrough_xfer_unit(dev
, buf
);
917 case 3: /* USB-specific. */
923 xfer
|= (extend
? buf
[3] << 8 : 0);
927 xfer
|= (extend
? buf
[5] << 8 : 0);
934 static int scsi_req_xfer(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
936 cmd
->xfer
= scsi_cdb_xfer(buf
);
938 case TEST_UNIT_READY
:
942 case WRITE_FILEMARKS
:
943 case WRITE_FILEMARKS_16
:
948 case ALLOW_MEDIUM_REMOVAL
:
950 case SYNCHRONIZE_CACHE
:
951 case SYNCHRONIZE_CACHE_16
:
953 case LOCK_UNLOCK_CACHE
:
962 case ALLOW_OVERWRITE
:
968 if ((buf
[1] & 2) == 0) {
970 } else if ((buf
[1] & 4) != 0) {
973 cmd
->xfer
*= dev
->blocksize
;
979 cmd
->xfer
= buf
[1] & 1 ? 0 : dev
->blocksize
;
981 case READ_CAPACITY_10
:
984 case READ_BLOCK_LIMITS
:
987 case SEND_VOLUME_TAG
:
988 /* GPCMD_SET_STREAMING from multimedia commands. */
989 if (dev
->type
== TYPE_ROM
) {
990 cmd
->xfer
= buf
[10] | (buf
[9] << 8);
992 cmd
->xfer
= buf
[9] | (buf
[8] << 8);
996 /* length 0 means 256 blocks */
997 if (cmd
->xfer
== 0) {
1002 case WRITE_VERIFY_10
:
1004 case WRITE_VERIFY_12
:
1006 case WRITE_VERIFY_16
:
1007 cmd
->xfer
*= dev
->blocksize
;
1011 /* length 0 means 256 blocks */
1012 if (cmd
->xfer
== 0) {
1019 cmd
->xfer
*= dev
->blocksize
;
1022 /* MMC mandates the parameter list to be 12-bytes long. Parameters
1023 * for block devices are restricted to the header right now. */
1024 if (dev
->type
== TYPE_ROM
&& (buf
[1] & 16)) {
1027 cmd
->xfer
= (buf
[1] & 16) == 0 ? 0 : (buf
[1] & 32 ? 8 : 4);
1031 case RECEIVE_DIAGNOSTIC
:
1032 case SEND_DIAGNOSTIC
:
1033 cmd
->xfer
= buf
[4] | (buf
[3] << 8);
1038 case SEND_CUE_SHEET
:
1039 cmd
->xfer
= buf
[8] | (buf
[7] << 8) | (buf
[6] << 16);
1041 case PERSISTENT_RESERVE_OUT
:
1042 cmd
->xfer
= ldl_be_p(&buf
[5]) & 0xffffffffULL
;
1045 if (dev
->type
== TYPE_ROM
) {
1046 /* MMC command GET PERFORMANCE. */
1047 cmd
->xfer
= scsi_get_performance_length(buf
[9] | (buf
[8] << 8),
1048 buf
[10], buf
[1] & 0x1f);
1051 case MECHANISM_STATUS
:
1052 case READ_DVD_STRUCTURE
:
1053 case SEND_DVD_STRUCTURE
:
1054 case MAINTENANCE_OUT
:
1055 case MAINTENANCE_IN
:
1056 if (dev
->type
== TYPE_ROM
) {
1057 /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */
1058 cmd
->xfer
= buf
[9] | (buf
[8] << 8);
1061 case ATA_PASSTHROUGH_12
:
1062 if (dev
->type
== TYPE_ROM
) {
1063 /* BLANK command of MMC */
1066 cmd
->xfer
= ata_passthrough_12_xfer(dev
, buf
);
1069 case ATA_PASSTHROUGH_16
:
1070 cmd
->xfer
= ata_passthrough_16_xfer(dev
, buf
);
1076 static int scsi_req_stream_xfer(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
1079 /* stream commands */
1086 case RECOVER_BUFFERED_DATA
:
1088 cmd
->xfer
= buf
[4] | (buf
[3] << 8) | (buf
[2] << 16);
1089 if (buf
[1] & 0x01) { /* fixed */
1090 cmd
->xfer
*= dev
->blocksize
;
1094 case READ_REVERSE_16
:
1097 cmd
->xfer
= buf
[14] | (buf
[13] << 8) | (buf
[12] << 16);
1098 if (buf
[1] & 0x01) { /* fixed */
1099 cmd
->xfer
*= dev
->blocksize
;
1107 cmd
->xfer
= buf
[13] | (buf
[12] << 8);
1110 switch (buf
[1] & 0x1f) /* operation code */ {
1111 case SHORT_FORM_BLOCK_ID
:
1112 case SHORT_FORM_VENDOR_SPECIFIC
:
1119 cmd
->xfer
= buf
[8] | (buf
[7] << 8);
1127 cmd
->xfer
= buf
[4] | (buf
[3] << 8);
1129 /* generic commands */
1131 return scsi_req_xfer(cmd
, dev
, buf
);
1136 static int scsi_req_medium_changer_xfer(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
1139 /* medium changer commands */
1140 case EXCHANGE_MEDIUM
:
1141 case INITIALIZE_ELEMENT_STATUS
:
1142 case INITIALIZE_ELEMENT_STATUS_WITH_RANGE
:
1144 case POSITION_TO_ELEMENT
:
1147 case READ_ELEMENT_STATUS
:
1148 cmd
->xfer
= buf
[9] | (buf
[8] << 8) | (buf
[7] << 16);
1151 /* generic commands */
1153 return scsi_req_xfer(cmd
, dev
, buf
);
1158 static int scsi_req_scanner_length(SCSICommand
*cmd
, SCSIDevice
*dev
, uint8_t *buf
)
1161 /* Scanner commands */
1162 case OBJECT_POSITION
:
1172 cmd
->xfer
= buf
[8] | (buf
[7] << 8) | (buf
[6] << 16);
1175 /* GET_DATA_BUFFER_STATUS xfer handled by scsi_req_xfer */
1176 return scsi_req_xfer(cmd
, dev
, buf
);
1182 static void scsi_cmd_xfer_mode(SCSICommand
*cmd
)
1185 cmd
->mode
= SCSI_XFER_NONE
;
1188 switch (cmd
->buf
[0]) {
1191 case WRITE_VERIFY_10
:
1193 case WRITE_VERIFY_12
:
1195 case WRITE_VERIFY_16
:
1202 case CHANGE_DEFINITION
:
1205 case MODE_SELECT_10
:
1206 case SEND_DIAGNOSTIC
:
1209 case REASSIGN_BLOCKS
:
1218 case SEARCH_HIGH_12
:
1219 case SEARCH_EQUAL_12
:
1222 case SEND_VOLUME_TAG
:
1223 case SEND_CUE_SHEET
:
1224 case SEND_DVD_STRUCTURE
:
1225 case PERSISTENT_RESERVE_OUT
:
1226 case MAINTENANCE_OUT
:
1229 /* SCAN conflicts with START_STOP. START_STOP has cmd->xfer set to 0 for
1230 * non-scanner devices, so we only get here for SCAN and not for START_STOP.
1232 cmd
->mode
= SCSI_XFER_TO_DEV
;
1234 case ATA_PASSTHROUGH_12
:
1235 case ATA_PASSTHROUGH_16
:
1237 cmd
->mode
= (cmd
->buf
[2] & 0x8) ?
1238 SCSI_XFER_FROM_DEV
: SCSI_XFER_TO_DEV
;
1241 cmd
->mode
= SCSI_XFER_FROM_DEV
;
1246 int scsi_req_parse_cdb(SCSIDevice
*dev
, SCSICommand
*cmd
, uint8_t *buf
)
1252 len
= scsi_cdb_length(buf
);
1258 switch (dev
->type
) {
1260 rc
= scsi_req_stream_xfer(cmd
, dev
, buf
);
1262 case TYPE_MEDIUM_CHANGER
:
1263 rc
= scsi_req_medium_changer_xfer(cmd
, dev
, buf
);
1266 rc
= scsi_req_scanner_length(cmd
, dev
, buf
);
1269 rc
= scsi_req_xfer(cmd
, dev
, buf
);
1276 memcpy(cmd
->buf
, buf
, cmd
->len
);
1277 scsi_cmd_xfer_mode(cmd
);
1278 cmd
->lba
= scsi_cmd_lba(cmd
);
1282 void scsi_device_report_change(SCSIDevice
*dev
, SCSISense sense
)
1284 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, dev
->qdev
.parent_bus
);
1286 scsi_device_set_ua(dev
, sense
);
1287 if (bus
->info
->change
) {
1288 bus
->info
->change(bus
, dev
, sense
);
1292 SCSIRequest
*scsi_req_ref(SCSIRequest
*req
)
1294 assert(req
->refcount
> 0);
1299 void scsi_req_unref(SCSIRequest
*req
)
1301 assert(req
->refcount
> 0);
1302 if (--req
->refcount
== 0) {
1303 BusState
*qbus
= req
->dev
->qdev
.parent_bus
;
1304 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, qbus
);
1306 if (bus
->info
->free_request
&& req
->hba_private
) {
1307 bus
->info
->free_request(bus
, req
->hba_private
);
1309 if (req
->ops
->free_req
) {
1310 req
->ops
->free_req(req
);
1312 object_unref(OBJECT(req
->dev
));
1313 object_unref(OBJECT(qbus
->parent
));
1318 /* Tell the device that we finished processing this chunk of I/O. It
1319 will start the next chunk or complete the command. */
1320 void scsi_req_continue(SCSIRequest
*req
)
1322 if (req
->io_canceled
) {
1323 trace_scsi_req_continue_canceled(req
->dev
->id
, req
->lun
, req
->tag
);
1326 trace_scsi_req_continue(req
->dev
->id
, req
->lun
, req
->tag
);
1327 if (req
->cmd
.mode
== SCSI_XFER_TO_DEV
) {
1328 req
->ops
->write_data(req
);
1330 req
->ops
->read_data(req
);
1334 /* Called by the devices when data is ready for the HBA. The HBA should
1335 start a DMA operation to read or fill the device's data buffer.
1336 Once it completes, calling scsi_req_continue will restart I/O. */
1337 void scsi_req_data(SCSIRequest
*req
, int len
)
1340 if (req
->io_canceled
) {
1341 trace_scsi_req_data_canceled(req
->dev
->id
, req
->lun
, req
->tag
, len
);
1344 trace_scsi_req_data(req
->dev
->id
, req
->lun
, req
->tag
, len
);
1345 assert(req
->cmd
.mode
!= SCSI_XFER_NONE
);
1348 req
->bus
->info
->transfer_data(req
, len
);
1352 /* If the device calls scsi_req_data and the HBA specified a
1353 * scatter/gather list, the transfer has to happen in a single
1355 assert(!req
->dma_started
);
1356 req
->dma_started
= true;
1358 buf
= scsi_req_get_buf(req
);
1359 if (req
->cmd
.mode
== SCSI_XFER_FROM_DEV
) {
1360 req
->resid
= dma_buf_read(buf
, len
, req
->sg
);
1362 req
->resid
= dma_buf_write(buf
, len
, req
->sg
);
1364 scsi_req_continue(req
);
1367 void scsi_req_print(SCSIRequest
*req
)
1372 fprintf(fp
, "[%s id=%d] %s",
1373 req
->dev
->qdev
.parent_bus
->name
,
1375 scsi_command_name(req
->cmd
.buf
[0]));
1376 for (i
= 1; i
< req
->cmd
.len
; i
++) {
1377 fprintf(fp
, " 0x%02x", req
->cmd
.buf
[i
]);
1379 switch (req
->cmd
.mode
) {
1380 case SCSI_XFER_NONE
:
1381 fprintf(fp
, " - none\n");
1383 case SCSI_XFER_FROM_DEV
:
1384 fprintf(fp
, " - from-dev len=%zd\n", req
->cmd
.xfer
);
1386 case SCSI_XFER_TO_DEV
:
1387 fprintf(fp
, " - to-dev len=%zd\n", req
->cmd
.xfer
);
1390 fprintf(fp
, " - Oops\n");
1395 void scsi_req_complete(SCSIRequest
*req
, int status
)
1397 assert(req
->status
== -1);
1398 req
->status
= status
;
1400 assert(req
->sense_len
<= sizeof(req
->sense
));
1401 if (status
== GOOD
) {
1405 if (req
->sense_len
) {
1406 memcpy(req
->dev
->sense
, req
->sense
, req
->sense_len
);
1407 req
->dev
->sense_len
= req
->sense_len
;
1408 req
->dev
->sense_is_ua
= (req
->ops
== &reqops_unit_attention
);
1410 req
->dev
->sense_len
= 0;
1411 req
->dev
->sense_is_ua
= false;
1415 * Unit attention state is now stored in the device's sense buffer
1416 * if the HBA didn't do autosense. Clear the pending unit attention
1419 scsi_clear_unit_attention(req
);
1422 scsi_req_dequeue(req
);
1423 req
->bus
->info
->complete(req
, req
->status
, req
->resid
);
1425 /* Cancelled requests might end up being completed instead of cancelled */
1426 notifier_list_notify(&req
->cancel_notifiers
, req
);
1427 scsi_req_unref(req
);
1430 /* Called by the devices when the request is canceled. */
1431 void scsi_req_cancel_complete(SCSIRequest
*req
)
1433 assert(req
->io_canceled
);
1434 if (req
->bus
->info
->cancel
) {
1435 req
->bus
->info
->cancel(req
);
1437 notifier_list_notify(&req
->cancel_notifiers
, req
);
1438 scsi_req_unref(req
);
1441 /* Cancel @req asynchronously. @notifier is added to @req's cancellation
1442 * notifier list, the bus will be notified the requests cancellation is
1445 void scsi_req_cancel_async(SCSIRequest
*req
, Notifier
*notifier
)
1447 trace_scsi_req_cancel(req
->dev
->id
, req
->lun
, req
->tag
);
1449 notifier_list_add(&req
->cancel_notifiers
, notifier
);
1451 if (req
->io_canceled
) {
1452 /* A blk_aio_cancel_async is pending; when it finishes,
1453 * scsi_req_cancel_complete will be called and will
1454 * call the notifier we just added. Just wait for that.
1459 /* Dropped in scsi_req_cancel_complete. */
1461 scsi_req_dequeue(req
);
1462 req
->io_canceled
= true;
1464 blk_aio_cancel_async(req
->aiocb
);
1466 scsi_req_cancel_complete(req
);
1470 void scsi_req_cancel(SCSIRequest
*req
)
1472 trace_scsi_req_cancel(req
->dev
->id
, req
->lun
, req
->tag
);
1473 if (!req
->enqueued
) {
1476 assert(!req
->io_canceled
);
1477 /* Dropped in scsi_req_cancel_complete. */
1479 scsi_req_dequeue(req
);
1480 req
->io_canceled
= true;
1482 blk_aio_cancel(req
->aiocb
);
1484 scsi_req_cancel_complete(req
);
1488 static int scsi_ua_precedence(SCSISense sense
)
1490 if (sense
.key
!= UNIT_ATTENTION
) {
1493 if (sense
.asc
== 0x29 && sense
.ascq
== 0x04) {
1494 /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */
1496 } else if (sense
.asc
== 0x3F && sense
.ascq
== 0x01) {
1497 /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */
1499 } else if (sense
.asc
== 0x29 && (sense
.ascq
== 0x05 || sense
.ascq
== 0x06)) {
1500 /* These two go with "all others". */
1502 } else if (sense
.asc
== 0x29 && sense
.ascq
<= 0x07) {
1503 /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0
1504 * POWER ON OCCURRED = 1
1505 * SCSI BUS RESET OCCURRED = 2
1506 * BUS DEVICE RESET FUNCTION OCCURRED = 3
1507 * I_T NEXUS LOSS OCCURRED = 7
1510 } else if (sense
.asc
== 0x2F && sense
.ascq
== 0x01) {
1511 /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */
1514 return (sense
.asc
<< 8) | sense
.ascq
;
1517 void scsi_device_set_ua(SCSIDevice
*sdev
, SCSISense sense
)
1520 if (sense
.key
!= UNIT_ATTENTION
) {
1523 trace_scsi_device_set_ua(sdev
->id
, sdev
->lun
, sense
.key
,
1524 sense
.asc
, sense
.ascq
);
1527 * Override a pre-existing unit attention condition, except for a more
1528 * important reset condition.
1530 prec1
= scsi_ua_precedence(sdev
->unit_attention
);
1531 prec2
= scsi_ua_precedence(sense
);
1532 if (prec2
< prec1
) {
1533 sdev
->unit_attention
= sense
;
1537 void scsi_device_purge_requests(SCSIDevice
*sdev
, SCSISense sense
)
1541 aio_context_acquire(blk_get_aio_context(sdev
->conf
.blk
));
1542 while (!QTAILQ_EMPTY(&sdev
->requests
)) {
1543 req
= QTAILQ_FIRST(&sdev
->requests
);
1544 scsi_req_cancel_async(req
, NULL
);
1546 blk_drain(sdev
->conf
.blk
);
1547 aio_context_release(blk_get_aio_context(sdev
->conf
.blk
));
1548 scsi_device_set_ua(sdev
, sense
);
1551 static char *scsibus_get_dev_path(DeviceState
*dev
)
1553 SCSIDevice
*d
= SCSI_DEVICE(dev
);
1554 DeviceState
*hba
= dev
->parent_bus
->parent
;
1558 id
= qdev_get_dev_path(hba
);
1560 path
= g_strdup_printf("%s/%d:%d:%d", id
, d
->channel
, d
->id
, d
->lun
);
1562 path
= g_strdup_printf("%d:%d:%d", d
->channel
, d
->id
, d
->lun
);
1568 static char *scsibus_get_fw_dev_path(DeviceState
*dev
)
1570 SCSIDevice
*d
= SCSI_DEVICE(dev
);
1571 return g_strdup_printf("channel@%x/%s@%x,%x", d
->channel
,
1572 qdev_fw_name(dev
), d
->id
, d
->lun
);
1575 SCSIDevice
*scsi_device_find(SCSIBus
*bus
, int channel
, int id
, int lun
)
1578 SCSIDevice
*target_dev
= NULL
;
1580 QTAILQ_FOREACH_REVERSE(kid
, &bus
->qbus
.children
, sibling
) {
1581 DeviceState
*qdev
= kid
->child
;
1582 SCSIDevice
*dev
= SCSI_DEVICE(qdev
);
1584 if (dev
->channel
== channel
&& dev
->id
== id
) {
1585 if (dev
->lun
== lun
) {
1594 /* SCSI request list. For simplicity, pv points to the whole device */
1596 static int put_scsi_requests(QEMUFile
*f
, void *pv
, size_t size
,
1597 const VMStateField
*field
, QJSON
*vmdesc
)
1600 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, s
->qdev
.parent_bus
);
1603 QTAILQ_FOREACH(req
, &s
->requests
, next
) {
1604 assert(!req
->io_canceled
);
1605 assert(req
->status
== -1);
1606 assert(req
->enqueued
);
1608 qemu_put_sbyte(f
, req
->retry
? 1 : 2);
1609 qemu_put_buffer(f
, req
->cmd
.buf
, sizeof(req
->cmd
.buf
));
1610 qemu_put_be32s(f
, &req
->tag
);
1611 qemu_put_be32s(f
, &req
->lun
);
1612 if (bus
->info
->save_request
) {
1613 bus
->info
->save_request(f
, req
);
1615 if (req
->ops
->save_request
) {
1616 req
->ops
->save_request(f
, req
);
1619 qemu_put_sbyte(f
, 0);
1624 static int get_scsi_requests(QEMUFile
*f
, void *pv
, size_t size
,
1625 const VMStateField
*field
)
1628 SCSIBus
*bus
= DO_UPCAST(SCSIBus
, qbus
, s
->qdev
.parent_bus
);
1631 while ((sbyte
= qemu_get_sbyte(f
)) > 0) {
1632 uint8_t buf
[SCSI_CMD_BUF_SIZE
];
1637 qemu_get_buffer(f
, buf
, sizeof(buf
));
1638 qemu_get_be32s(f
, &tag
);
1639 qemu_get_be32s(f
, &lun
);
1640 req
= scsi_req_new(s
, tag
, lun
, buf
, NULL
);
1641 req
->retry
= (sbyte
== 1);
1642 if (bus
->info
->load_request
) {
1643 req
->hba_private
= bus
->info
->load_request(f
, req
);
1645 if (req
->ops
->load_request
) {
1646 req
->ops
->load_request(f
, req
);
1649 /* Just restart it later. */
1650 scsi_req_enqueue_internal(req
);
1652 /* At this point, the request will be kept alive by the reference
1653 * added by scsi_req_enqueue_internal, so we can release our reference.
1654 * The HBA of course will add its own reference in the load_request
1655 * callback if it needs to hold on the SCSIRequest.
1657 scsi_req_unref(req
);
1663 static const VMStateInfo vmstate_info_scsi_requests
= {
1664 .name
= "scsi-requests",
1665 .get
= get_scsi_requests
,
1666 .put
= put_scsi_requests
,
1669 static bool scsi_sense_state_needed(void *opaque
)
1671 SCSIDevice
*s
= opaque
;
1673 return s
->sense_len
> SCSI_SENSE_BUF_SIZE_OLD
;
1676 static const VMStateDescription vmstate_scsi_sense_state
= {
1677 .name
= "SCSIDevice/sense",
1679 .minimum_version_id
= 1,
1680 .needed
= scsi_sense_state_needed
,
1681 .fields
= (VMStateField
[]) {
1682 VMSTATE_UINT8_SUB_ARRAY(sense
, SCSIDevice
,
1683 SCSI_SENSE_BUF_SIZE_OLD
,
1684 SCSI_SENSE_BUF_SIZE
- SCSI_SENSE_BUF_SIZE_OLD
),
1685 VMSTATE_END_OF_LIST()
1689 const VMStateDescription vmstate_scsi_device
= {
1690 .name
= "SCSIDevice",
1692 .minimum_version_id
= 1,
1693 .fields
= (VMStateField
[]) {
1694 VMSTATE_UINT8(unit_attention
.key
, SCSIDevice
),
1695 VMSTATE_UINT8(unit_attention
.asc
, SCSIDevice
),
1696 VMSTATE_UINT8(unit_attention
.ascq
, SCSIDevice
),
1697 VMSTATE_BOOL(sense_is_ua
, SCSIDevice
),
1698 VMSTATE_UINT8_SUB_ARRAY(sense
, SCSIDevice
, 0, SCSI_SENSE_BUF_SIZE_OLD
),
1699 VMSTATE_UINT32(sense_len
, SCSIDevice
),
1703 .field_exists
= NULL
,
1704 .size
= 0, /* ouch */
1705 .info
= &vmstate_info_scsi_requests
,
1706 .flags
= VMS_SINGLE
,
1709 VMSTATE_END_OF_LIST()
1711 .subsections
= (const VMStateDescription
*[]) {
1712 &vmstate_scsi_sense_state
,
1717 static void scsi_device_class_init(ObjectClass
*klass
, void *data
)
1719 DeviceClass
*k
= DEVICE_CLASS(klass
);
1720 set_bit(DEVICE_CATEGORY_STORAGE
, k
->categories
);
1721 k
->bus_type
= TYPE_SCSI_BUS
;
1722 k
->realize
= scsi_qdev_realize
;
1723 k
->unrealize
= scsi_qdev_unrealize
;
1724 device_class_set_props(k
, scsi_props
);
1727 static void scsi_dev_instance_init(Object
*obj
)
1729 DeviceState
*dev
= DEVICE(obj
);
1730 SCSIDevice
*s
= SCSI_DEVICE(dev
);
1732 device_add_bootindex_property(obj
, &s
->conf
.bootindex
,
1737 static const TypeInfo scsi_device_type_info
= {
1738 .name
= TYPE_SCSI_DEVICE
,
1739 .parent
= TYPE_DEVICE
,
1740 .instance_size
= sizeof(SCSIDevice
),
1742 .class_size
= sizeof(SCSIDeviceClass
),
1743 .class_init
= scsi_device_class_init
,
1744 .instance_init
= scsi_dev_instance_init
,
1747 static void scsi_register_types(void)
1749 type_register_static(&scsi_bus_info
);
1750 type_register_static(&scsi_device_type_info
);
1753 type_init(scsi_register_types
)