1#include "qemu/osdep.h"
2#include "hw/hw.h"
3#include "qapi/error.h"
4#include "qemu/error-report.h"
5#include "hw/scsi/scsi.h"
6#include "block/scsi.h"
7#include "hw/qdev.h"
8#include "sysemu/block-backend.h"
9#include "sysemu/blockdev.h"
10#include "trace.h"
11#include "sysemu/dma.h"
12#include "qemu/cutils.h"
13
14static char *scsibus_get_dev_path(DeviceState *dev);
15static char *scsibus_get_fw_dev_path(DeviceState *dev);
16static void scsi_req_dequeue(SCSIRequest *req);
17static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len);
18static void scsi_target_free_buf(SCSIRequest *req);
19
20static Property scsi_props[] = {
21 DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0),
22 DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1),
23 DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1),
24 DEFINE_PROP_END_OF_LIST(),
25};
26
27static void scsi_bus_class_init(ObjectClass *klass, void *data)
28{
29 BusClass *k = BUS_CLASS(klass);
30 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
31
32 k->get_dev_path = scsibus_get_dev_path;
33 k->get_fw_dev_path = scsibus_get_fw_dev_path;
34 hc->unplug = qdev_simple_device_unplug_cb;
35}
36
37static const TypeInfo scsi_bus_info = {
38 .name = TYPE_SCSI_BUS,
39 .parent = TYPE_BUS,
40 .instance_size = sizeof(SCSIBus),
41 .class_init = scsi_bus_class_init,
42 .interfaces = (InterfaceInfo[]) {
43 { TYPE_HOTPLUG_HANDLER },
44 { }
45 }
46};
47static int next_scsi_bus;
48
49static void scsi_device_realize(SCSIDevice *s, Error **errp)
50{
51 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
52 if (sc->realize) {
53 sc->realize(s, errp);
54 }
55}
56
57int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
58 void *hba_private)
59{
60 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
61 int rc;
62
63 assert(cmd->len == 0);
64 rc = scsi_req_parse_cdb(dev, cmd, buf);
65 if (bus->info->parse_cdb) {
66 rc = bus->info->parse_cdb(dev, cmd, buf, hba_private);
67 }
68 return rc;
69}
70
71static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun,
72 uint8_t *buf, void *hba_private)
73{
74 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
75 if (sc->alloc_req) {
76 return sc->alloc_req(s, tag, lun, buf, hba_private);
77 }
78
79 return NULL;
80}
81
82void scsi_device_unit_attention_reported(SCSIDevice *s)
83{
84 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
85 if (sc->unit_attention_reported) {
86 sc->unit_attention_reported(s);
87 }
88}
89
90
91void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host,
92 const SCSIBusInfo *info, const char *bus_name)
93{
94 qbus_create_inplace(bus, bus_size, TYPE_SCSI_BUS, host, bus_name);
95 bus->busnr = next_scsi_bus++;
96 bus->info = info;
97 qbus_set_bus_hotplug_handler(BUS(bus), &error_abort);
98}
99
100static void scsi_dma_restart_bh(void *opaque)
101{
102 SCSIDevice *s = opaque;
103 SCSIRequest *req, *next;
104
105 qemu_bh_delete(s->bh);
106 s->bh = NULL;
107
108 aio_context_acquire(blk_get_aio_context(s->conf.blk));
109 QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) {
110 scsi_req_ref(req);
111 if (req->retry) {
112 req->retry = false;
113 switch (req->cmd.mode) {
114 case SCSI_XFER_FROM_DEV:
115 case SCSI_XFER_TO_DEV:
116 scsi_req_continue(req);
117 break;
118 case SCSI_XFER_NONE:
119 scsi_req_dequeue(req);
120 scsi_req_enqueue(req);
121 break;
122 }
123 }
124 scsi_req_unref(req);
125 }
126 aio_context_release(blk_get_aio_context(s->conf.blk));
127}
128
129void scsi_req_retry(SCSIRequest *req)
130{
131
132
133 req->retry = true;
134}
135
136static void scsi_dma_restart_cb(void *opaque, int running, RunState state)
137{
138 SCSIDevice *s = opaque;
139
140 if (!running) {
141 return;
142 }
143 if (!s->bh) {
144 AioContext *ctx = blk_get_aio_context(s->conf.blk);
145 s->bh = aio_bh_new(ctx, scsi_dma_restart_bh, s);
146 qemu_bh_schedule(s->bh);
147 }
148}
149
150static void scsi_qdev_realize(DeviceState *qdev, Error **errp)
151{
152 SCSIDevice *dev = SCSI_DEVICE(qdev);
153 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
154 SCSIDevice *d;
155 Error *local_err = NULL;
156
157 if (dev->channel > bus->info->max_channel) {
158 error_setg(errp, "bad scsi channel id: %d", dev->channel);
159 return;
160 }
161 if (dev->id != -1 && dev->id > bus->info->max_target) {
162 error_setg(errp, "bad scsi device id: %d", dev->id);
163 return;
164 }
165 if (dev->lun != -1 && dev->lun > bus->info->max_lun) {
166 error_setg(errp, "bad scsi device lun: %d", dev->lun);
167 return;
168 }
169
170 if (dev->id == -1) {
171 int id = -1;
172 if (dev->lun == -1) {
173 dev->lun = 0;
174 }
175 do {
176 d = scsi_device_find(bus, dev->channel, ++id, dev->lun);
177 } while (d && d->lun == dev->lun && id < bus->info->max_target);
178 if (d && d->lun == dev->lun) {
179 error_setg(errp, "no free target");
180 return;
181 }
182 dev->id = id;
183 } else if (dev->lun == -1) {
184 int lun = -1;
185 do {
186 d = scsi_device_find(bus, dev->channel, dev->id, ++lun);
187 } while (d && d->lun == lun && lun < bus->info->max_lun);
188 if (d && d->lun == lun) {
189 error_setg(errp, "no free lun");
190 return;
191 }
192 dev->lun = lun;
193 } else {
194 d = scsi_device_find(bus, dev->channel, dev->id, dev->lun);
195 assert(d);
196 if (d->lun == dev->lun && dev != d) {
197 error_setg(errp, "lun already used by '%s'", d->qdev.id);
198 return;
199 }
200 }
201
202 QTAILQ_INIT(&dev->requests);
203 scsi_device_realize(dev, &local_err);
204 if (local_err) {
205 error_propagate(errp, local_err);
206 return;
207 }
208 dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb,
209 dev);
210}
211
212static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp)
213{
214 SCSIDevice *dev = SCSI_DEVICE(qdev);
215
216 if (dev->vmsentry) {
217 qemu_del_vm_change_state_handler(dev->vmsentry);
218 }
219
220 scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE));
221 blockdev_mark_auto_del(dev->conf.blk);
222}
223
224
225SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
226 int unit, bool removable, int bootindex,
227 const char *serial, Error **errp)
228{
229 const char *driver;
230 char *name;
231 DeviceState *dev;
232 Error *err = NULL;
233
234 driver = blk_is_sg(blk) ? "scsi-generic" : "scsi-disk";
235 dev = qdev_create(&bus->qbus, driver);
236 name = g_strdup_printf("legacy[%d]", unit);
237 object_property_add_child(OBJECT(bus), name, OBJECT(dev), NULL);
238 g_free(name);
239
240 qdev_prop_set_uint32(dev, "scsi-id", unit);
241 if (bootindex >= 0) {
242 object_property_set_int(OBJECT(dev), bootindex, "bootindex",
243 &error_abort);
244 }
245 if (object_property_find(OBJECT(dev), "removable", NULL)) {
246 qdev_prop_set_bit(dev, "removable", removable);
247 }
248 if (serial && object_property_find(OBJECT(dev), "serial", NULL)) {
249 qdev_prop_set_string(dev, "serial", serial);
250 }
251 qdev_prop_set_drive(dev, "drive", blk, &err);
252 if (err) {
253 error_propagate(errp, err);
254 object_unparent(OBJECT(dev));
255 return NULL;
256 }
257 object_property_set_bool(OBJECT(dev), true, "realized", &err);
258 if (err != NULL) {
259 error_propagate(errp, err);
260 object_unparent(OBJECT(dev));
261 return NULL;
262 }
263 return SCSI_DEVICE(dev);
264}
265
266void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated)
267{
268 Location loc;
269 DriveInfo *dinfo;
270 int unit;
271
272 loc_push_none(&loc);
273 for (unit = 0; unit <= bus->info->max_target; unit++) {
274 dinfo = drive_get(IF_SCSI, bus->busnr, unit);
275 if (dinfo == NULL) {
276 continue;
277 }
278 qemu_opts_loc_restore(dinfo->opts);
279 if (deprecated) {
280
281 if (blk_get_attached_dev(blk_by_legacy_dinfo(dinfo))) {
282 continue;
283 }
284 if (!dinfo->is_default) {
285 warn_report("bus=%d,unit=%d is deprecated with this"
286 " machine type",
287 bus->busnr, unit);
288 }
289 }
290 scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo),
291 unit, false, -1, NULL, &error_fatal);
292 }
293 loc_pop(&loc);
294}
295
296static bool is_scsi_hba_with_legacy_magic(Object *obj)
297{
298 static const char *magic[] = {
299 "am53c974", "dc390", "esp", "lsi53c810", "lsi53c895a",
300 "megasas", "megasas-gen2", "mptsas1068", "spapr-vscsi",
301 "virtio-scsi-device",
302 NULL
303 };
304 const char *typename = object_get_typename(obj);
305 int i;
306
307 for (i = 0; magic[i]; i++)
308 if (!strcmp(typename, magic[i])) {
309 return true;
310 }
311
312 return false;
313}
314
315static int scsi_legacy_handle_cmdline_cb(Object *obj, void *opaque)
316{
317 SCSIBus *bus = (SCSIBus *)object_dynamic_cast(obj, TYPE_SCSI_BUS);
318
319 if (bus && is_scsi_hba_with_legacy_magic(OBJECT(bus->qbus.parent))) {
320 scsi_bus_legacy_handle_cmdline(bus, true);
321 }
322
323 return 0;
324}
325
326void scsi_legacy_handle_cmdline(void)
327{
328 object_child_foreach_recursive(object_get_root(),
329 scsi_legacy_handle_cmdline_cb, NULL);
330}
331
332static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf)
333{
334 scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD));
335 scsi_req_complete(req, CHECK_CONDITION);
336 return 0;
337}
338
339static const struct SCSIReqOps reqops_invalid_field = {
340 .size = sizeof(SCSIRequest),
341 .send_command = scsi_invalid_field
342};
343
344
345
346static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf)
347{
348 scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE));
349 scsi_req_complete(req, CHECK_CONDITION);
350 return 0;
351}
352
353static const struct SCSIReqOps reqops_invalid_opcode = {
354 .size = sizeof(SCSIRequest),
355 .send_command = scsi_invalid_command
356};
357
358
359
360static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf)
361{
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);
366 }
367 scsi_req_complete(req, CHECK_CONDITION);
368 return 0;
369}
370
371static const struct SCSIReqOps reqops_unit_attention = {
372 .size = sizeof(SCSIRequest),
373 .send_command = scsi_unit_attention
374};
375
376
377
378
379typedef struct SCSITargetReq SCSITargetReq;
380
381struct SCSITargetReq {
382 SCSIRequest req;
383 int len;
384 uint8_t *buf;
385 int buf_len;
386};
387
388static void store_lun(uint8_t *outbuf, int lun)
389{
390 if (lun < 256) {
391 outbuf[1] = lun;
392 return;
393 }
394 outbuf[1] = (lun & 255);
395 outbuf[0] = (lun >> 8) | 0x40;
396}
397
398static bool scsi_target_emulate_report_luns(SCSITargetReq *r)
399{
400 BusChild *kid;
401 int i, len, n;
402 int channel, id;
403 bool found_lun0;
404
405 if (r->req.cmd.xfer < 16) {
406 return false;
407 }
408 if (r->req.cmd.buf[2] > 2) {
409 return false;
410 }
411 channel = r->req.dev->channel;
412 id = r->req.dev->id;
413 found_lun0 = false;
414 n = 0;
415 QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) {
416 DeviceState *qdev = kid->child;
417 SCSIDevice *dev = SCSI_DEVICE(qdev);
418
419 if (dev->channel == channel && dev->id == id) {
420 if (dev->lun == 0) {
421 found_lun0 = true;
422 }
423 n += 8;
424 }
425 }
426 if (!found_lun0) {
427 n += 8;
428 }
429
430 scsi_target_alloc_buf(&r->req, n + 8);
431
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);
439
440 if (dev->channel == channel && dev->id == id) {
441 store_lun(&r->buf[i], dev->lun);
442 i += 8;
443 }
444 }
445 assert(i == n + 8);
446 r->len = len;
447 return true;
448}
449
450static bool scsi_target_emulate_inquiry(SCSITargetReq *r)
451{
452 assert(r->req.dev->lun != r->req.lun);
453
454 scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN);
455
456 if (r->req.cmd.buf[1] & 0x2) {
457
458 return false;
459 }
460
461 if (r->req.cmd.buf[1] & 0x1) {
462
463 uint8_t page_code = r->req.cmd.buf[2];
464 r->buf[r->len++] = page_code ;
465 r->buf[r->len++] = 0x00;
466
467 switch (page_code) {
468 case 0x00:
469 {
470 int pages;
471 pages = r->len++;
472 r->buf[r->len++] = 0x00;
473 r->buf[pages] = r->len - pages - 1;
474 break;
475 }
476 default:
477 return false;
478 }
479
480 assert(r->len < r->buf_len);
481 r->len = MIN(r->req.cmd.xfer, r->len);
482 return true;
483 }
484
485
486 if (r->req.cmd.buf[2] != 0) {
487 return false;
488 }
489
490
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;
495 } else {
496 r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE;
497 r->buf[2] = 5;
498 r->buf[3] = 2 | 0x10;
499 r->buf[4] = r->len - 5;
500 r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0);
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());
504 }
505 return true;
506}
507
508static size_t scsi_sense_len(SCSIRequest *req)
509{
510 if (req->dev->type == TYPE_SCANNER)
511 return SCSI_SENSE_LEN_SCANNER;
512 else
513 return SCSI_SENSE_LEN;
514}
515
516static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf)
517{
518 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
519
520 if (req->lun != 0) {
521 scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED));
522 scsi_req_complete(req, CHECK_CONDITION);
523 return 0;
524 }
525 switch (buf[0]) {
526 case REPORT_LUNS:
527 if (!scsi_target_emulate_report_luns(r)) {
528 goto illegal_request;
529 }
530 break;
531 case INQUIRY:
532 if (!scsi_target_emulate_inquiry(r)) {
533 goto illegal_request;
534 }
535 break;
536 case REQUEST_SENSE:
537 scsi_target_alloc_buf(&r->req, scsi_sense_len(req));
538 r->len = scsi_device_get_sense(r->req.dev, r->buf,
539 MIN(req->cmd.xfer, r->buf_len),
540 (req->cmd.buf[1] & 1) == 0);
541 if (r->req.dev->sense_is_ua) {
542 scsi_device_unit_attention_reported(req->dev);
543 r->req.dev->sense_len = 0;
544 r->req.dev->sense_is_ua = false;
545 }
546 break;
547 case TEST_UNIT_READY:
548 break;
549 default:
550 scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE));
551 scsi_req_complete(req, CHECK_CONDITION);
552 return 0;
553 illegal_request:
554 scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD));
555 scsi_req_complete(req, CHECK_CONDITION);
556 return 0;
557 }
558
559 if (!r->len) {
560 scsi_req_complete(req, GOOD);
561 }
562 return r->len;
563}
564
565static void scsi_target_read_data(SCSIRequest *req)
566{
567 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
568 uint32_t n;
569
570 n = r->len;
571 if (n > 0) {
572 r->len = 0;
573 scsi_req_data(&r->req, n);
574 } else {
575 scsi_req_complete(&r->req, GOOD);
576 }
577}
578
579static uint8_t *scsi_target_get_buf(SCSIRequest *req)
580{
581 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
582
583 return r->buf;
584}
585
586static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len)
587{
588 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
589
590 r->buf = g_malloc(len);
591 r->buf_len = len;
592
593 return r->buf;
594}
595
596static void scsi_target_free_buf(SCSIRequest *req)
597{
598 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
599
600 g_free(r->buf);
601}
602
603static const struct SCSIReqOps reqops_target_command = {
604 .size = sizeof(SCSITargetReq),
605 .send_command = scsi_target_send_command,
606 .read_data = scsi_target_read_data,
607 .get_buf = scsi_target_get_buf,
608 .free_req = scsi_target_free_buf,
609};
610
611
612SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d,
613 uint32_t tag, uint32_t lun, void *hba_private)
614{
615 SCSIRequest *req;
616 SCSIBus *bus = scsi_bus_from_device(d);
617 BusState *qbus = BUS(bus);
618 const int memset_off = offsetof(SCSIRequest, sense)
619 + sizeof(req->sense);
620
621 req = g_malloc(reqops->size);
622 memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off);
623 req->refcount = 1;
624 req->bus = bus;
625 req->dev = d;
626 req->tag = tag;
627 req->lun = lun;
628 req->hba_private = hba_private;
629 req->status = -1;
630 req->ops = reqops;
631 object_ref(OBJECT(d));
632 object_ref(OBJECT(qbus->parent));
633 notifier_list_init(&req->cancel_notifiers);
634 trace_scsi_req_alloc(req->dev->id, req->lun, req->tag);
635 return req;
636}
637
638SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun,
639 uint8_t *buf, void *hba_private)
640{
641 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
642 const SCSIReqOps *ops;
643 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d);
644 SCSIRequest *req;
645 SCSICommand cmd = { .len = 0 };
646 int ret;
647
648 if ((d->unit_attention.key == UNIT_ATTENTION ||
649 bus->unit_attention.key == UNIT_ATTENTION) &&
650 (buf[0] != INQUIRY &&
651 buf[0] != REPORT_LUNS &&
652 buf[0] != GET_CONFIGURATION &&
653 buf[0] != GET_EVENT_STATUS_NOTIFICATION &&
654
655
656
657
658
659 !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) {
660 ops = &reqops_unit_attention;
661 } else if (lun != d->lun ||
662 buf[0] == REPORT_LUNS ||
663 (buf[0] == REQUEST_SENSE && d->sense_len)) {
664 ops = &reqops_target_command;
665 } else {
666 ops = NULL;
667 }
668
669 if (ops != NULL || !sc->parse_cdb) {
670 ret = scsi_req_parse_cdb(d, &cmd, buf);
671 } else {
672 ret = sc->parse_cdb(d, &cmd, buf, hba_private);
673 }
674
675 if (ret != 0) {
676 trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]);
677 req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private);
678 } else {
679 assert(cmd.len != 0);
680 trace_scsi_req_parsed(d->id, lun, tag, buf[0],
681 cmd.mode, cmd.xfer);
682 if (cmd.lba != -1) {
683 trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0],
684 cmd.lba);
685 }
686
687 if (cmd.xfer > INT32_MAX) {
688 req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private);
689 } else if (ops) {
690 req = scsi_req_alloc(ops, d, tag, lun, hba_private);
691 } else {
692 req = scsi_device_alloc_req(d, tag, lun, buf, hba_private);
693 }
694 }
695
696 req->cmd = cmd;
697 req->resid = req->cmd.xfer;
698
699 switch (buf[0]) {
700 case INQUIRY:
701 trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]);
702 break;
703 case TEST_UNIT_READY:
704 trace_scsi_test_unit_ready(d->id, lun, tag);
705 break;
706 case REPORT_LUNS:
707 trace_scsi_report_luns(d->id, lun, tag);
708 break;
709 case REQUEST_SENSE:
710 trace_scsi_request_sense(d->id, lun, tag);
711 break;
712 default:
713 break;
714 }
715
716 return req;
717}
718
719uint8_t *scsi_req_get_buf(SCSIRequest *req)
720{
721 return req->ops->get_buf(req);
722}
723
724static void scsi_clear_unit_attention(SCSIRequest *req)
725{
726 SCSISense *ua;
727 if (req->dev->unit_attention.key != UNIT_ATTENTION &&
728 req->bus->unit_attention.key != UNIT_ATTENTION) {
729 return;
730 }
731
732
733
734
735
736
737 if (req->cmd.buf[0] == INQUIRY ||
738 req->cmd.buf[0] == GET_CONFIGURATION ||
739 req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) {
740 return;
741 }
742
743 if (req->dev->unit_attention.key == UNIT_ATTENTION) {
744 ua = &req->dev->unit_attention;
745 } else {
746 ua = &req->bus->unit_attention;
747 }
748
749
750
751
752
753
754 if (req->cmd.buf[0] == REPORT_LUNS &&
755 !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc &&
756 ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) {
757 return;
758 }
759
760 *ua = SENSE_CODE(NO_SENSE);
761}
762
763int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len)
764{
765 int ret;
766
767 assert(len >= 14);
768 if (!req->sense_len) {
769 return 0;
770 }
771
772 ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true);
773
774
775
776
777
778
779
780
781
782
783 if (req->dev->sense_is_ua) {
784 scsi_device_unit_attention_reported(req->dev);
785 req->dev->sense_len = 0;
786 req->dev->sense_is_ua = false;
787 }
788 return ret;
789}
790
791int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed)
792{
793 return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed);
794}
795
796void scsi_req_build_sense(SCSIRequest *req, SCSISense sense)
797{
798 trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag,
799 sense.key, sense.asc, sense.ascq);
800 memset(req->sense, 0, 18);
801 req->sense[0] = 0x70;
802 req->sense[2] = sense.key;
803 req->sense[7] = 10;
804 req->sense[12] = sense.asc;
805 req->sense[13] = sense.ascq;
806 req->sense_len = 18;
807}
808
809static void scsi_req_enqueue_internal(SCSIRequest *req)
810{
811 assert(!req->enqueued);
812 scsi_req_ref(req);
813 if (req->bus->info->get_sg_list) {
814 req->sg = req->bus->info->get_sg_list(req);
815 } else {
816 req->sg = NULL;
817 }
818 req->enqueued = true;
819 QTAILQ_INSERT_TAIL(&req->dev->requests, req, next);
820}
821
822int32_t scsi_req_enqueue(SCSIRequest *req)
823{
824 int32_t rc;
825
826 assert(!req->retry);
827 scsi_req_enqueue_internal(req);
828 scsi_req_ref(req);
829 rc = req->ops->send_command(req, req->cmd.buf);
830 scsi_req_unref(req);
831 return rc;
832}
833
834static void scsi_req_dequeue(SCSIRequest *req)
835{
836 trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag);
837 req->retry = false;
838 if (req->enqueued) {
839 QTAILQ_REMOVE(&req->dev->requests, req, next);
840 req->enqueued = false;
841 scsi_req_unref(req);
842 }
843}
844
845static int scsi_get_performance_length(int num_desc, int type, int data_type)
846{
847
848 switch (type) {
849 case 0:
850 if ((data_type & 3) == 0) {
851
852 return 16 * num_desc + 8;
853 } else {
854
855 return 6 * num_desc + 8;
856 }
857 case 1:
858 case 4:
859 case 5:
860 return 8 * num_desc + 8;
861 case 2:
862 return 2048 * num_desc + 8;
863 case 3:
864 return 16 * num_desc + 8;
865 default:
866 return 8;
867 }
868}
869
870static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf)
871{
872 int byte_block = (buf[2] >> 2) & 0x1;
873 int type = (buf[2] >> 4) & 0x1;
874 int xfer_unit;
875
876 if (byte_block) {
877 if (type) {
878 xfer_unit = dev->blocksize;
879 } else {
880 xfer_unit = 512;
881 }
882 } else {
883 xfer_unit = 1;
884 }
885
886 return xfer_unit;
887}
888
889static int ata_passthrough_12_xfer(SCSIDevice *dev, uint8_t *buf)
890{
891 int length = buf[2] & 0x3;
892 int xfer;
893 int unit = ata_passthrough_xfer_unit(dev, buf);
894
895 switch (length) {
896 case 0:
897 case 3:
898 default:
899 xfer = 0;
900 break;
901 case 1:
902 xfer = buf[3];
903 break;
904 case 2:
905 xfer = buf[4];
906 break;
907 }
908
909 return xfer * unit;
910}
911
912static int ata_passthrough_16_xfer(SCSIDevice *dev, uint8_t *buf)
913{
914 int extend = buf[1] & 0x1;
915 int length = buf[2] & 0x3;
916 int xfer;
917 int unit = ata_passthrough_xfer_unit(dev, buf);
918
919 switch (length) {
920 case 0:
921 case 3:
922 default:
923 xfer = 0;
924 break;
925 case 1:
926 xfer = buf[4];
927 xfer |= (extend ? buf[3] << 8 : 0);
928 break;
929 case 2:
930 xfer = buf[6];
931 xfer |= (extend ? buf[5] << 8 : 0);
932 break;
933 }
934
935 return xfer * unit;
936}
937
938uint32_t scsi_data_cdb_xfer(uint8_t *buf)
939{
940 if ((buf[0] >> 5) == 0 && buf[4] == 0) {
941 return 256;
942 } else {
943 return scsi_cdb_xfer(buf);
944 }
945}
946
947uint32_t scsi_cdb_xfer(uint8_t *buf)
948{
949 switch (buf[0] >> 5) {
950 case 0:
951 return buf[4];
952 break;
953 case 1:
954 case 2:
955 return lduw_be_p(&buf[7]);
956 break;
957 case 4:
958 return ldl_be_p(&buf[10]) & 0xffffffffULL;
959 break;
960 case 5:
961 return ldl_be_p(&buf[6]) & 0xffffffffULL;
962 break;
963 default:
964 return -1;
965 }
966}
967
968static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
969{
970 cmd->xfer = scsi_cdb_xfer(buf);
971 switch (buf[0]) {
972 case TEST_UNIT_READY:
973 case REWIND:
974 case START_STOP:
975 case SET_CAPACITY:
976 case WRITE_FILEMARKS:
977 case WRITE_FILEMARKS_16:
978 case SPACE:
979 case RESERVE:
980 case RELEASE:
981 case ERASE:
982 case ALLOW_MEDIUM_REMOVAL:
983 case SEEK_10:
984 case SYNCHRONIZE_CACHE:
985 case SYNCHRONIZE_CACHE_16:
986 case LOCATE_16:
987 case LOCK_UNLOCK_CACHE:
988 case SET_CD_SPEED:
989 case SET_LIMITS:
990 case WRITE_LONG_10:
991 case UPDATE_BLOCK:
992 case RESERVE_TRACK:
993 case SET_READ_AHEAD:
994 case PRE_FETCH:
995 case PRE_FETCH_16:
996 case ALLOW_OVERWRITE:
997 cmd->xfer = 0;
998 break;
999 case VERIFY_10:
1000 case VERIFY_12:
1001 case VERIFY_16:
1002 if ((buf[1] & 2) == 0) {
1003 cmd->xfer = 0;
1004 } else if ((buf[1] & 4) != 0) {
1005 cmd->xfer = 1;
1006 }
1007 cmd->xfer *= dev->blocksize;
1008 break;
1009 case MODE_SENSE:
1010 break;
1011 case WRITE_SAME_10:
1012 case WRITE_SAME_16:
1013 cmd->xfer = dev->blocksize;
1014 break;
1015 case READ_CAPACITY_10:
1016 cmd->xfer = 8;
1017 break;
1018 case READ_BLOCK_LIMITS:
1019 cmd->xfer = 6;
1020 break;
1021 case SEND_VOLUME_TAG:
1022
1023 if (dev->type == TYPE_ROM) {
1024 cmd->xfer = buf[10] | (buf[9] << 8);
1025 } else {
1026 cmd->xfer = buf[9] | (buf[8] << 8);
1027 }
1028 break;
1029 case WRITE_6:
1030
1031 if (cmd->xfer == 0) {
1032 cmd->xfer = 256;
1033 }
1034
1035 case WRITE_10:
1036 case WRITE_VERIFY_10:
1037 case WRITE_12:
1038 case WRITE_VERIFY_12:
1039 case WRITE_16:
1040 case WRITE_VERIFY_16:
1041 cmd->xfer *= dev->blocksize;
1042 break;
1043 case READ_6:
1044 case READ_REVERSE:
1045
1046 if (cmd->xfer == 0) {
1047 cmd->xfer = 256;
1048 }
1049
1050 case READ_10:
1051 case READ_12:
1052 case READ_16:
1053 cmd->xfer *= dev->blocksize;
1054 break;
1055 case FORMAT_UNIT:
1056
1057
1058 if (dev->type == TYPE_ROM && (buf[1] & 16)) {
1059 cmd->xfer = 12;
1060 } else {
1061 cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4);
1062 }
1063 break;
1064 case INQUIRY:
1065 case RECEIVE_DIAGNOSTIC:
1066 case SEND_DIAGNOSTIC:
1067 cmd->xfer = buf[4] | (buf[3] << 8);
1068 break;
1069 case READ_CD:
1070 case READ_BUFFER:
1071 case WRITE_BUFFER:
1072 case SEND_CUE_SHEET:
1073 cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16);
1074 break;
1075 case PERSISTENT_RESERVE_OUT:
1076 cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL;
1077 break;
1078 case ERASE_12:
1079 if (dev->type == TYPE_ROM) {
1080
1081 cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8),
1082 buf[10], buf[1] & 0x1f);
1083 }
1084 break;
1085 case MECHANISM_STATUS:
1086 case READ_DVD_STRUCTURE:
1087 case SEND_DVD_STRUCTURE:
1088 case MAINTENANCE_OUT:
1089 case MAINTENANCE_IN:
1090 if (dev->type == TYPE_ROM) {
1091
1092 cmd->xfer = buf[9] | (buf[8] << 8);
1093 }
1094 break;
1095 case ATA_PASSTHROUGH_12:
1096 if (dev->type == TYPE_ROM) {
1097
1098 cmd->xfer = 0;
1099 } else {
1100 cmd->xfer = ata_passthrough_12_xfer(dev, buf);
1101 }
1102 break;
1103 case ATA_PASSTHROUGH_16:
1104 cmd->xfer = ata_passthrough_16_xfer(dev, buf);
1105 break;
1106 }
1107 return 0;
1108}
1109
1110static int scsi_req_stream_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
1111{
1112 switch (buf[0]) {
1113
1114 case ERASE_12:
1115 case ERASE_16:
1116 cmd->xfer = 0;
1117 break;
1118 case READ_6:
1119 case READ_REVERSE:
1120 case RECOVER_BUFFERED_DATA:
1121 case WRITE_6:
1122 cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16);
1123 if (buf[1] & 0x01) {
1124 cmd->xfer *= dev->blocksize;
1125 }
1126 break;
1127 case READ_16:
1128 case READ_REVERSE_16:
1129 case VERIFY_16:
1130 case WRITE_16:
1131 cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16);
1132 if (buf[1] & 0x01) {
1133 cmd->xfer *= dev->blocksize;
1134 }
1135 break;
1136 case REWIND:
1137 case LOAD_UNLOAD:
1138 cmd->xfer = 0;
1139 break;
1140 case SPACE_16:
1141 cmd->xfer = buf[13] | (buf[12] << 8);
1142 break;
1143 case READ_POSITION:
1144 switch (buf[1] & 0x1f) {
1145 case SHORT_FORM_BLOCK_ID:
1146 case SHORT_FORM_VENDOR_SPECIFIC:
1147 cmd->xfer = 20;
1148 break;
1149 case LONG_FORM:
1150 cmd->xfer = 32;
1151 break;
1152 case EXTENDED_FORM:
1153 cmd->xfer = buf[8] | (buf[7] << 8);
1154 break;
1155 default:
1156 return -1;
1157 }
1158
1159 break;
1160 case FORMAT_UNIT:
1161 cmd->xfer = buf[4] | (buf[3] << 8);
1162 break;
1163
1164 default:
1165 return scsi_req_xfer(cmd, dev, buf);
1166 }
1167 return 0;
1168}
1169
1170static int scsi_req_medium_changer_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
1171{
1172 switch (buf[0]) {
1173
1174 case EXCHANGE_MEDIUM:
1175 case INITIALIZE_ELEMENT_STATUS:
1176 case INITIALIZE_ELEMENT_STATUS_WITH_RANGE:
1177 case MOVE_MEDIUM:
1178 case POSITION_TO_ELEMENT:
1179 cmd->xfer = 0;
1180 break;
1181 case READ_ELEMENT_STATUS:
1182 cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16);
1183 break;
1184
1185
1186 default:
1187 return scsi_req_xfer(cmd, dev, buf);
1188 }
1189 return 0;
1190}
1191
1192static int scsi_req_scanner_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
1193{
1194 switch (buf[0]) {
1195
1196 case OBJECT_POSITION:
1197 cmd->xfer = 0;
1198 break;
1199 case SCAN:
1200 cmd->xfer = buf[4];
1201 break;
1202 case READ_10:
1203 case SEND:
1204 case GET_WINDOW:
1205 case SET_WINDOW:
1206 cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16);
1207 break;
1208 default:
1209
1210 return scsi_req_xfer(cmd, dev, buf);
1211 }
1212
1213 return 0;
1214}
1215
1216static void scsi_cmd_xfer_mode(SCSICommand *cmd)
1217{
1218 if (!cmd->xfer) {
1219 cmd->mode = SCSI_XFER_NONE;
1220 return;
1221 }
1222 switch (cmd->buf[0]) {
1223 case WRITE_6:
1224 case WRITE_10:
1225 case WRITE_VERIFY_10:
1226 case WRITE_12:
1227 case WRITE_VERIFY_12:
1228 case WRITE_16:
1229 case WRITE_VERIFY_16:
1230 case VERIFY_10:
1231 case VERIFY_12:
1232 case VERIFY_16:
1233 case COPY:
1234 case COPY_VERIFY:
1235 case COMPARE:
1236 case CHANGE_DEFINITION:
1237 case LOG_SELECT:
1238 case MODE_SELECT:
1239 case MODE_SELECT_10:
1240 case SEND_DIAGNOSTIC:
1241 case WRITE_BUFFER:
1242 case FORMAT_UNIT:
1243 case REASSIGN_BLOCKS:
1244 case SEARCH_EQUAL:
1245 case SEARCH_HIGH:
1246 case SEARCH_LOW:
1247 case UPDATE_BLOCK:
1248 case WRITE_LONG_10:
1249 case WRITE_SAME_10:
1250 case WRITE_SAME_16:
1251 case UNMAP:
1252 case SEARCH_HIGH_12:
1253 case SEARCH_EQUAL_12:
1254 case SEARCH_LOW_12:
1255 case MEDIUM_SCAN:
1256 case SEND_VOLUME_TAG:
1257 case SEND_CUE_SHEET:
1258 case SEND_DVD_STRUCTURE:
1259 case PERSISTENT_RESERVE_OUT:
1260 case MAINTENANCE_OUT:
1261 case SET_WINDOW:
1262 case SCAN:
1263
1264
1265
1266 cmd->mode = SCSI_XFER_TO_DEV;
1267 break;
1268 case ATA_PASSTHROUGH_12:
1269 case ATA_PASSTHROUGH_16:
1270
1271 cmd->mode = (cmd->buf[2] & 0x8) ?
1272 SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV;
1273 break;
1274 default:
1275 cmd->mode = SCSI_XFER_FROM_DEV;
1276 break;
1277 }
1278}
1279
1280static uint64_t scsi_cmd_lba(SCSICommand *cmd)
1281{
1282 uint8_t *buf = cmd->buf;
1283 uint64_t lba;
1284
1285 switch (buf[0] >> 5) {
1286 case 0:
1287 lba = ldl_be_p(&buf[0]) & 0x1fffff;
1288 break;
1289 case 1:
1290 case 2:
1291 case 5:
1292 lba = ldl_be_p(&buf[2]) & 0xffffffffULL;
1293 break;
1294 case 4:
1295 lba = ldq_be_p(&buf[2]);
1296 break;
1297 default:
1298 lba = -1;
1299
1300 }
1301 return lba;
1302}
1303
1304int scsi_cdb_length(uint8_t *buf) {
1305 int cdb_len;
1306
1307 switch (buf[0] >> 5) {
1308 case 0:
1309 cdb_len = 6;
1310 break;
1311 case 1:
1312 case 2:
1313 cdb_len = 10;
1314 break;
1315 case 4:
1316 cdb_len = 16;
1317 break;
1318 case 5:
1319 cdb_len = 12;
1320 break;
1321 default:
1322 cdb_len = -1;
1323 }
1324 return cdb_len;
1325}
1326
1327int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf)
1328{
1329 int rc;
1330 int len;
1331
1332 cmd->lba = -1;
1333 len = scsi_cdb_length(buf);
1334 if (len < 0) {
1335 return -1;
1336 }
1337
1338 cmd->len = len;
1339 switch (dev->type) {
1340 case TYPE_TAPE:
1341 rc = scsi_req_stream_xfer(cmd, dev, buf);
1342 break;
1343 case TYPE_MEDIUM_CHANGER:
1344 rc = scsi_req_medium_changer_xfer(cmd, dev, buf);
1345 break;
1346 case TYPE_SCANNER:
1347 rc = scsi_req_scanner_length(cmd, dev, buf);
1348 break;
1349 default:
1350 rc = scsi_req_xfer(cmd, dev, buf);
1351 break;
1352 }
1353
1354 if (rc != 0)
1355 return rc;
1356
1357 memcpy(cmd->buf, buf, cmd->len);
1358 scsi_cmd_xfer_mode(cmd);
1359 cmd->lba = scsi_cmd_lba(cmd);
1360 return 0;
1361}
1362
1363void scsi_device_report_change(SCSIDevice *dev, SCSISense sense)
1364{
1365 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
1366
1367 scsi_device_set_ua(dev, sense);
1368 if (bus->info->change) {
1369 bus->info->change(bus, dev, sense);
1370 }
1371}
1372
1373
1374
1375
1376
1377
1378const struct SCSISense sense_code_NO_SENSE = {
1379 .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00
1380};
1381
1382
1383const struct SCSISense sense_code_LUN_NOT_READY = {
1384 .key = NOT_READY, .asc = 0x04, .ascq = 0x03
1385};
1386
1387
1388const struct SCSISense sense_code_NO_MEDIUM = {
1389 .key = NOT_READY, .asc = 0x3a, .ascq = 0x00
1390};
1391
1392
1393const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = {
1394 .key = NOT_READY, .asc = 0x53, .ascq = 0x02
1395};
1396
1397
1398const struct SCSISense sense_code_TARGET_FAILURE = {
1399 .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00
1400};
1401
1402
1403const struct SCSISense sense_code_INVALID_OPCODE = {
1404 .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00
1405};
1406
1407
1408const struct SCSISense sense_code_LBA_OUT_OF_RANGE = {
1409 .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00
1410};
1411
1412
1413const struct SCSISense sense_code_INVALID_FIELD = {
1414 .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00
1415};
1416
1417
1418const struct SCSISense sense_code_INVALID_PARAM = {
1419 .key = ILLEGAL_REQUEST, .asc = 0x26, .ascq = 0x00
1420};
1421
1422
1423const struct SCSISense sense_code_INVALID_PARAM_LEN = {
1424 .key = ILLEGAL_REQUEST, .asc = 0x1a, .ascq = 0x00
1425};
1426
1427
1428const struct SCSISense sense_code_LUN_NOT_SUPPORTED = {
1429 .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00
1430};
1431
1432
1433const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = {
1434 .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00
1435};
1436
1437
1438const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = {
1439 .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00
1440};
1441
1442
1443const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = {
1444 .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x02
1445};
1446
1447
1448const struct SCSISense sense_code_INVALID_TAG = {
1449 .key = ILLEGAL_REQUEST, .asc = 0x4b, .ascq = 0x01
1450};
1451
1452
1453const struct SCSISense sense_code_IO_ERROR = {
1454 .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06
1455};
1456
1457
1458const struct SCSISense sense_code_I_T_NEXUS_LOSS = {
1459 .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07
1460};
1461
1462
1463const struct SCSISense sense_code_LUN_FAILURE = {
1464 .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01
1465};
1466
1467
1468const struct SCSISense sense_code_OVERLAPPED_COMMANDS = {
1469 .key = ABORTED_COMMAND, .asc = 0x4e, .ascq = 0x00
1470};
1471
1472
1473const struct SCSISense sense_code_CAPACITY_CHANGED = {
1474 .key = UNIT_ATTENTION, .asc = 0x2a, .ascq = 0x09
1475};
1476
1477
1478const struct SCSISense sense_code_RESET = {
1479 .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00
1480};
1481
1482
1483const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = {
1484 .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00
1485};
1486
1487
1488const struct SCSISense sense_code_MEDIUM_CHANGED = {
1489 .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00
1490};
1491
1492
1493const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = {
1494 .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e
1495};
1496
1497
1498const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = {
1499 .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04
1500};
1501
1502
1503const struct SCSISense sense_code_WRITE_PROTECTED = {
1504 .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x00
1505};
1506
1507
1508const struct SCSISense sense_code_SPACE_ALLOC_FAILED = {
1509 .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x07
1510};
1511
1512
1513
1514
1515
1516
1517int scsi_build_sense(uint8_t *in_buf, int in_len,
1518 uint8_t *buf, int len, bool fixed)
1519{
1520 bool fixed_in;
1521 SCSISense sense;
1522 if (!fixed && len < 8) {
1523 return 0;
1524 }
1525
1526 if (in_len == 0) {
1527 sense.key = NO_SENSE;
1528 sense.asc = 0;
1529 sense.ascq = 0;
1530 } else {
1531 fixed_in = (in_buf[0] & 2) == 0;
1532
1533 if (fixed == fixed_in) {
1534 memcpy(buf, in_buf, MIN(len, in_len));
1535 return MIN(len, in_len);
1536 }
1537
1538 if (fixed_in) {
1539 sense.key = in_buf[2];
1540 sense.asc = in_buf[12];
1541 sense.ascq = in_buf[13];
1542 } else {
1543 sense.key = in_buf[1];
1544 sense.asc = in_buf[2];
1545 sense.ascq = in_buf[3];
1546 }
1547 }
1548
1549 memset(buf, 0, len);
1550 if (fixed) {
1551
1552 buf[0] = 0x70;
1553 buf[2] = sense.key;
1554 buf[7] = 10;
1555 buf[12] = sense.asc;
1556 buf[13] = sense.ascq;
1557 return MIN(len, SCSI_SENSE_LEN);
1558 } else {
1559
1560 buf[0] = 0x72;
1561 buf[1] = sense.key;
1562 buf[2] = sense.asc;
1563 buf[3] = sense.ascq;
1564 return 8;
1565 }
1566}
1567
1568const char *scsi_command_name(uint8_t cmd)
1569{
1570 static const char *names[] = {
1571 [ TEST_UNIT_READY ] = "TEST_UNIT_READY",
1572 [ REWIND ] = "REWIND",
1573 [ REQUEST_SENSE ] = "REQUEST_SENSE",
1574 [ FORMAT_UNIT ] = "FORMAT_UNIT",
1575 [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS",
1576 [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS/INITIALIZE ELEMENT STATUS",
1577
1578 [ READ_6 ] = "READ_6",
1579 [ WRITE_6 ] = "WRITE_6",
1580 [ SET_CAPACITY ] = "SET_CAPACITY",
1581 [ READ_REVERSE ] = "READ_REVERSE",
1582 [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS",
1583 [ SPACE ] = "SPACE",
1584 [ INQUIRY ] = "INQUIRY",
1585 [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA",
1586 [ MAINTENANCE_IN ] = "MAINTENANCE_IN",
1587 [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT",
1588 [ MODE_SELECT ] = "MODE_SELECT",
1589 [ RESERVE ] = "RESERVE",
1590 [ RELEASE ] = "RELEASE",
1591 [ COPY ] = "COPY",
1592 [ ERASE ] = "ERASE",
1593 [ MODE_SENSE ] = "MODE_SENSE",
1594 [ START_STOP ] = "START_STOP/LOAD_UNLOAD",
1595
1596 [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC",
1597 [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC",
1598 [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL",
1599 [ READ_CAPACITY_10 ] = "READ_CAPACITY_10",
1600 [ READ_10 ] = "READ_10",
1601 [ WRITE_10 ] = "WRITE_10",
1602 [ SEEK_10 ] = "SEEK_10/POSITION_TO_ELEMENT",
1603
1604 [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10",
1605 [ VERIFY_10 ] = "VERIFY_10",
1606 [ SEARCH_HIGH ] = "SEARCH_HIGH",
1607 [ SEARCH_EQUAL ] = "SEARCH_EQUAL",
1608 [ SEARCH_LOW ] = "SEARCH_LOW",
1609 [ SET_LIMITS ] = "SET_LIMITS",
1610 [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION",
1611
1612 [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE",
1613 [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE",
1614 [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA/INITIALIZE_ELEMENT_STATUS_WITH_RANGE",
1615
1616 [ MEDIUM_SCAN ] = "MEDIUM_SCAN",
1617 [ COMPARE ] = "COMPARE",
1618 [ COPY_VERIFY ] = "COPY_VERIFY",
1619 [ WRITE_BUFFER ] = "WRITE_BUFFER",
1620 [ READ_BUFFER ] = "READ_BUFFER",
1621 [ UPDATE_BLOCK ] = "UPDATE_BLOCK",
1622 [ READ_LONG_10 ] = "READ_LONG_10",
1623 [ WRITE_LONG_10 ] = "WRITE_LONG_10",
1624 [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION",
1625 [ WRITE_SAME_10 ] = "WRITE_SAME_10",
1626 [ UNMAP ] = "UNMAP",
1627 [ READ_TOC ] = "READ_TOC",
1628 [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT",
1629 [ SANITIZE ] = "SANITIZE",
1630 [ GET_CONFIGURATION ] = "GET_CONFIGURATION",
1631 [ LOG_SELECT ] = "LOG_SELECT",
1632 [ LOG_SENSE ] = "LOG_SENSE",
1633 [ MODE_SELECT_10 ] = "MODE_SELECT_10",
1634 [ RESERVE_10 ] = "RESERVE_10",
1635 [ RELEASE_10 ] = "RELEASE_10",
1636 [ MODE_SENSE_10 ] = "MODE_SENSE_10",
1637 [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN",
1638 [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT",
1639 [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16",
1640 [ EXTENDED_COPY ] = "EXTENDED_COPY",
1641 [ ATA_PASSTHROUGH_16 ] = "ATA_PASSTHROUGH_16",
1642 [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN",
1643 [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT",
1644 [ READ_16 ] = "READ_16",
1645 [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE",
1646 [ WRITE_16 ] = "WRITE_16",
1647 [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16",
1648 [ VERIFY_16 ] = "VERIFY_16",
1649 [ PRE_FETCH_16 ] = "PRE_FETCH_16",
1650 [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16",
1651
1652 [ LOCATE_16 ] = "LOCATE_16",
1653 [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16",
1654
1655 [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16",
1656 [ WRITE_LONG_16 ] = "WRITE_LONG_16",
1657 [ REPORT_LUNS ] = "REPORT_LUNS",
1658 [ ATA_PASSTHROUGH_12 ] = "BLANK/ATA_PASSTHROUGH_12",
1659 [ MOVE_MEDIUM ] = "MOVE_MEDIUM",
1660 [ EXCHANGE_MEDIUM ] = "EXCHANGE MEDIUM",
1661 [ READ_12 ] = "READ_12",
1662 [ WRITE_12 ] = "WRITE_12",
1663 [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE",
1664
1665 [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12",
1666 [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12",
1667 [ VERIFY_12 ] = "VERIFY_12",
1668 [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12",
1669 [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12",
1670 [ SEARCH_LOW_12 ] = "SEARCH_LOW_12",
1671 [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS",
1672 [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING",
1673
1674 [ READ_CD ] = "READ_CD",
1675 [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12",
1676 [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE",
1677 [ RESERVE_TRACK ] = "RESERVE_TRACK",
1678 [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET",
1679 [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE",
1680 [ SET_CD_SPEED ] = "SET_CD_SPEED",
1681 [ SET_READ_AHEAD ] = "SET_READ_AHEAD",
1682 [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE",
1683 [ MECHANISM_STATUS ] = "MECHANISM_STATUS",
1684 [ GET_EVENT_STATUS_NOTIFICATION ] = "GET_EVENT_STATUS_NOTIFICATION",
1685 [ READ_DISC_INFORMATION ] = "READ_DISC_INFORMATION",
1686 };
1687
1688 if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL)
1689 return "*UNKNOWN*";
1690 return names[cmd];
1691}
1692
1693SCSIRequest *scsi_req_ref(SCSIRequest *req)
1694{
1695 assert(req->refcount > 0);
1696 req->refcount++;
1697 return req;
1698}
1699
1700void scsi_req_unref(SCSIRequest *req)
1701{
1702 assert(req->refcount > 0);
1703 if (--req->refcount == 0) {
1704 BusState *qbus = req->dev->qdev.parent_bus;
1705 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus);
1706
1707 if (bus->info->free_request && req->hba_private) {
1708 bus->info->free_request(bus, req->hba_private);
1709 }
1710 if (req->ops->free_req) {
1711 req->ops->free_req(req);
1712 }
1713 object_unref(OBJECT(req->dev));
1714 object_unref(OBJECT(qbus->parent));
1715 g_free(req);
1716 }
1717}
1718
1719
1720
1721void scsi_req_continue(SCSIRequest *req)
1722{
1723 if (req->io_canceled) {
1724 trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag);
1725 return;
1726 }
1727 trace_scsi_req_continue(req->dev->id, req->lun, req->tag);
1728 if (req->cmd.mode == SCSI_XFER_TO_DEV) {
1729 req->ops->write_data(req);
1730 } else {
1731 req->ops->read_data(req);
1732 }
1733}
1734
1735
1736
1737
1738void scsi_req_data(SCSIRequest *req, int len)
1739{
1740 uint8_t *buf;
1741 if (req->io_canceled) {
1742 trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len);
1743 return;
1744 }
1745 trace_scsi_req_data(req->dev->id, req->lun, req->tag, len);
1746 assert(req->cmd.mode != SCSI_XFER_NONE);
1747 if (!req->sg) {
1748 req->resid -= len;
1749 req->bus->info->transfer_data(req, len);
1750 return;
1751 }
1752
1753
1754
1755
1756 assert(!req->dma_started);
1757 req->dma_started = true;
1758
1759 buf = scsi_req_get_buf(req);
1760 if (req->cmd.mode == SCSI_XFER_FROM_DEV) {
1761 req->resid = dma_buf_read(buf, len, req->sg);
1762 } else {
1763 req->resid = dma_buf_write(buf, len, req->sg);
1764 }
1765 scsi_req_continue(req);
1766}
1767
1768void scsi_req_print(SCSIRequest *req)
1769{
1770 FILE *fp = stderr;
1771 int i;
1772
1773 fprintf(fp, "[%s id=%d] %s",
1774 req->dev->qdev.parent_bus->name,
1775 req->dev->id,
1776 scsi_command_name(req->cmd.buf[0]));
1777 for (i = 1; i < req->cmd.len; i++) {
1778 fprintf(fp, " 0x%02x", req->cmd.buf[i]);
1779 }
1780 switch (req->cmd.mode) {
1781 case SCSI_XFER_NONE:
1782 fprintf(fp, " - none\n");
1783 break;
1784 case SCSI_XFER_FROM_DEV:
1785 fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer);
1786 break;
1787 case SCSI_XFER_TO_DEV:
1788 fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer);
1789 break;
1790 default:
1791 fprintf(fp, " - Oops\n");
1792 break;
1793 }
1794}
1795
1796void scsi_req_complete(SCSIRequest *req, int status)
1797{
1798 assert(req->status == -1);
1799 req->status = status;
1800
1801 assert(req->sense_len <= sizeof(req->sense));
1802 if (status == GOOD) {
1803 req->sense_len = 0;
1804 }
1805
1806 if (req->sense_len) {
1807 memcpy(req->dev->sense, req->sense, req->sense_len);
1808 req->dev->sense_len = req->sense_len;
1809 req->dev->sense_is_ua = (req->ops == &reqops_unit_attention);
1810 } else {
1811 req->dev->sense_len = 0;
1812 req->dev->sense_is_ua = false;
1813 }
1814
1815
1816
1817
1818
1819
1820 scsi_clear_unit_attention(req);
1821
1822 scsi_req_ref(req);
1823 scsi_req_dequeue(req);
1824 req->bus->info->complete(req, req->status, req->resid);
1825
1826
1827 notifier_list_notify(&req->cancel_notifiers, req);
1828 scsi_req_unref(req);
1829}
1830
1831
1832void scsi_req_cancel_complete(SCSIRequest *req)
1833{
1834 assert(req->io_canceled);
1835 if (req->bus->info->cancel) {
1836 req->bus->info->cancel(req);
1837 }
1838 notifier_list_notify(&req->cancel_notifiers, req);
1839 scsi_req_unref(req);
1840}
1841
1842
1843
1844
1845
1846void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier)
1847{
1848 trace_scsi_req_cancel(req->dev->id, req->lun, req->tag);
1849 if (notifier) {
1850 notifier_list_add(&req->cancel_notifiers, notifier);
1851 }
1852 if (req->io_canceled) {
1853
1854
1855
1856
1857 assert(req->aiocb);
1858 return;
1859 }
1860
1861 scsi_req_ref(req);
1862 scsi_req_dequeue(req);
1863 req->io_canceled = true;
1864 if (req->aiocb) {
1865 blk_aio_cancel_async(req->aiocb);
1866 } else {
1867 scsi_req_cancel_complete(req);
1868 }
1869}
1870
1871void scsi_req_cancel(SCSIRequest *req)
1872{
1873 trace_scsi_req_cancel(req->dev->id, req->lun, req->tag);
1874 if (!req->enqueued) {
1875 return;
1876 }
1877 assert(!req->io_canceled);
1878
1879 scsi_req_ref(req);
1880 scsi_req_dequeue(req);
1881 req->io_canceled = true;
1882 if (req->aiocb) {
1883 blk_aio_cancel(req->aiocb);
1884 } else {
1885 scsi_req_cancel_complete(req);
1886 }
1887}
1888
1889static int scsi_ua_precedence(SCSISense sense)
1890{
1891 if (sense.key != UNIT_ATTENTION) {
1892 return INT_MAX;
1893 }
1894 if (sense.asc == 0x29 && sense.ascq == 0x04) {
1895
1896 return 1;
1897 } else if (sense.asc == 0x3F && sense.ascq == 0x01) {
1898
1899 return 2;
1900 } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) {
1901
1902 ;
1903 } else if (sense.asc == 0x29 && sense.ascq <= 0x07) {
1904
1905
1906
1907
1908
1909
1910 return sense.ascq;
1911 } else if (sense.asc == 0x2F && sense.ascq == 0x01) {
1912
1913 return 8;
1914 }
1915 return (sense.asc << 8) | sense.ascq;
1916}
1917
1918void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense)
1919{
1920 int prec1, prec2;
1921 if (sense.key != UNIT_ATTENTION) {
1922 return;
1923 }
1924 trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key,
1925 sense.asc, sense.ascq);
1926
1927
1928
1929
1930
1931 prec1 = scsi_ua_precedence(sdev->unit_attention);
1932 prec2 = scsi_ua_precedence(sense);
1933 if (prec2 < prec1) {
1934 sdev->unit_attention = sense;
1935 }
1936}
1937
1938void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense)
1939{
1940 SCSIRequest *req;
1941
1942 aio_context_acquire(blk_get_aio_context(sdev->conf.blk));
1943 while (!QTAILQ_EMPTY(&sdev->requests)) {
1944 req = QTAILQ_FIRST(&sdev->requests);
1945 scsi_req_cancel_async(req, NULL);
1946 }
1947 blk_drain(sdev->conf.blk);
1948 aio_context_release(blk_get_aio_context(sdev->conf.blk));
1949 scsi_device_set_ua(sdev, sense);
1950}
1951
1952static char *scsibus_get_dev_path(DeviceState *dev)
1953{
1954 SCSIDevice *d = SCSI_DEVICE(dev);
1955 DeviceState *hba = dev->parent_bus->parent;
1956 char *id;
1957 char *path;
1958
1959 id = qdev_get_dev_path(hba);
1960 if (id) {
1961 path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun);
1962 } else {
1963 path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun);
1964 }
1965 g_free(id);
1966 return path;
1967}
1968
1969static char *scsibus_get_fw_dev_path(DeviceState *dev)
1970{
1971 SCSIDevice *d = SCSI_DEVICE(dev);
1972 return g_strdup_printf("channel@%x/%s@%x,%x", d->channel,
1973 qdev_fw_name(dev), d->id, d->lun);
1974}
1975
1976SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun)
1977{
1978 BusChild *kid;
1979 SCSIDevice *target_dev = NULL;
1980
1981 QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, ChildrenHead, sibling) {
1982 DeviceState *qdev = kid->child;
1983 SCSIDevice *dev = SCSI_DEVICE(qdev);
1984
1985 if (dev->channel == channel && dev->id == id) {
1986 if (dev->lun == lun) {
1987 return dev;
1988 }
1989 target_dev = dev;
1990 }
1991 }
1992 return target_dev;
1993}
1994
1995
1996
1997static int put_scsi_requests(QEMUFile *f, void *pv, size_t size,
1998 VMStateField *field, QJSON *vmdesc)
1999{
2000 SCSIDevice *s = pv;
2001 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus);
2002 SCSIRequest *req;
2003
2004 QTAILQ_FOREACH(req, &s->requests, next) {
2005 assert(!req->io_canceled);
2006 assert(req->status == -1);
2007 assert(req->enqueued);
2008
2009 qemu_put_sbyte(f, req->retry ? 1 : 2);
2010 qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf));
2011 qemu_put_be32s(f, &req->tag);
2012 qemu_put_be32s(f, &req->lun);
2013 if (bus->info->save_request) {
2014 bus->info->save_request(f, req);
2015 }
2016 if (req->ops->save_request) {
2017 req->ops->save_request(f, req);
2018 }
2019 }
2020 qemu_put_sbyte(f, 0);
2021
2022 return 0;
2023}
2024
2025static int get_scsi_requests(QEMUFile *f, void *pv, size_t size,
2026 VMStateField *field)
2027{
2028 SCSIDevice *s = pv;
2029 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus);
2030 int8_t sbyte;
2031
2032 while ((sbyte = qemu_get_sbyte(f)) > 0) {
2033 uint8_t buf[SCSI_CMD_BUF_SIZE];
2034 uint32_t tag;
2035 uint32_t lun;
2036 SCSIRequest *req;
2037
2038 qemu_get_buffer(f, buf, sizeof(buf));
2039 qemu_get_be32s(f, &tag);
2040 qemu_get_be32s(f, &lun);
2041 req = scsi_req_new(s, tag, lun, buf, NULL);
2042 req->retry = (sbyte == 1);
2043 if (bus->info->load_request) {
2044 req->hba_private = bus->info->load_request(f, req);
2045 }
2046 if (req->ops->load_request) {
2047 req->ops->load_request(f, req);
2048 }
2049
2050
2051 scsi_req_enqueue_internal(req);
2052
2053
2054
2055
2056
2057
2058 scsi_req_unref(req);
2059 }
2060
2061 return 0;
2062}
2063
2064static const VMStateInfo vmstate_info_scsi_requests = {
2065 .name = "scsi-requests",
2066 .get = get_scsi_requests,
2067 .put = put_scsi_requests,
2068};
2069
2070static bool scsi_sense_state_needed(void *opaque)
2071{
2072 SCSIDevice *s = opaque;
2073
2074 return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD;
2075}
2076
2077static const VMStateDescription vmstate_scsi_sense_state = {
2078 .name = "SCSIDevice/sense",
2079 .version_id = 1,
2080 .minimum_version_id = 1,
2081 .needed = scsi_sense_state_needed,
2082 .fields = (VMStateField[]) {
2083 VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice,
2084 SCSI_SENSE_BUF_SIZE_OLD,
2085 SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD),
2086 VMSTATE_END_OF_LIST()
2087 }
2088};
2089
2090const VMStateDescription vmstate_scsi_device = {
2091 .name = "SCSIDevice",
2092 .version_id = 1,
2093 .minimum_version_id = 1,
2094 .fields = (VMStateField[]) {
2095 VMSTATE_UINT8(unit_attention.key, SCSIDevice),
2096 VMSTATE_UINT8(unit_attention.asc, SCSIDevice),
2097 VMSTATE_UINT8(unit_attention.ascq, SCSIDevice),
2098 VMSTATE_BOOL(sense_is_ua, SCSIDevice),
2099 VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD),
2100 VMSTATE_UINT32(sense_len, SCSIDevice),
2101 {
2102 .name = "requests",
2103 .version_id = 0,
2104 .field_exists = NULL,
2105 .size = 0,
2106 .info = &vmstate_info_scsi_requests,
2107 .flags = VMS_SINGLE,
2108 .offset = 0,
2109 },
2110 VMSTATE_END_OF_LIST()
2111 },
2112 .subsections = (const VMStateDescription*[]) {
2113 &vmstate_scsi_sense_state,
2114 NULL
2115 }
2116};
2117
2118static void scsi_device_class_init(ObjectClass *klass, void *data)
2119{
2120 DeviceClass *k = DEVICE_CLASS(klass);
2121 set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
2122 k->bus_type = TYPE_SCSI_BUS;
2123 k->realize = scsi_qdev_realize;
2124 k->unrealize = scsi_qdev_unrealize;
2125 k->props = scsi_props;
2126}
2127
2128static void scsi_dev_instance_init(Object *obj)
2129{
2130 DeviceState *dev = DEVICE(obj);
2131 SCSIDevice *s = SCSI_DEVICE(dev);
2132
2133 device_add_bootindex_property(obj, &s->conf.bootindex,
2134 "bootindex", NULL,
2135 &s->qdev, NULL);
2136}
2137
2138static const TypeInfo scsi_device_type_info = {
2139 .name = TYPE_SCSI_DEVICE,
2140 .parent = TYPE_DEVICE,
2141 .instance_size = sizeof(SCSIDevice),
2142 .abstract = true,
2143 .class_size = sizeof(SCSIDeviceClass),
2144 .class_init = scsi_device_class_init,
2145 .instance_init = scsi_dev_instance_init,
2146};
2147
2148static void scsi_register_types(void)
2149{
2150 type_register_static(&scsi_bus_info);
2151 type_register_static(&scsi_device_type_info);
2152}
2153
2154type_init(scsi_register_types)
2155