scsi: megasas: use appropriate property buffer size
[qemu/ar7.git] / hw / scsi / scsi-bus.c
blobad6f398c329ddd83b7674d91d397f942175c529e
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"
14 static char *scsibus_get_dev_path(DeviceState *dev);
15 static char *scsibus_get_fw_dev_path(DeviceState *dev);
16 static void scsi_req_dequeue(SCSIRequest *req);
17 static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len);
18 static void scsi_target_free_buf(SCSIRequest *req);
20 static 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(),
27 static void scsi_bus_class_init(ObjectClass *klass, void *data)
29 BusClass *k = BUS_CLASS(klass);
30 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
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;
37 static 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 { }
47 static int next_scsi_bus;
49 static void scsi_device_realize(SCSIDevice *s, Error **errp)
51 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
52 if (sc->realize) {
53 sc->realize(s, errp);
57 int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
58 void *hba_private)
60 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
61 int rc;
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);
68 return rc;
71 static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun,
72 uint8_t *buf, void *hba_private)
74 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
75 if (sc->alloc_req) {
76 return sc->alloc_req(s, tag, lun, buf, hba_private);
79 return NULL;
82 void scsi_device_unit_attention_reported(SCSIDevice *s)
84 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
85 if (sc->unit_attention_reported) {
86 sc->unit_attention_reported(s);
90 /* Create a scsi bus, and attach devices to it. */
91 void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host,
92 const SCSIBusInfo *info, const char *bus_name)
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);
100 static void scsi_dma_restart_bh(void *opaque)
102 SCSIDevice *s = opaque;
103 SCSIRequest *req, *next;
105 qemu_bh_delete(s->bh);
106 s->bh = NULL;
108 QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) {
109 scsi_req_ref(req);
110 if (req->retry) {
111 req->retry = false;
112 switch (req->cmd.mode) {
113 case SCSI_XFER_FROM_DEV:
114 case SCSI_XFER_TO_DEV:
115 scsi_req_continue(req);
116 break;
117 case SCSI_XFER_NONE:
118 scsi_req_dequeue(req);
119 scsi_req_enqueue(req);
120 break;
123 scsi_req_unref(req);
127 void scsi_req_retry(SCSIRequest *req)
129 /* No need to save a reference, because scsi_dma_restart_bh just
130 * looks at the request list. */
131 req->retry = true;
134 static void scsi_dma_restart_cb(void *opaque, int running, RunState state)
136 SCSIDevice *s = opaque;
138 if (!running) {
139 return;
141 if (!s->bh) {
142 AioContext *ctx = blk_get_aio_context(s->conf.blk);
143 s->bh = aio_bh_new(ctx, scsi_dma_restart_bh, s);
144 qemu_bh_schedule(s->bh);
148 static void scsi_qdev_realize(DeviceState *qdev, Error **errp)
150 SCSIDevice *dev = SCSI_DEVICE(qdev);
151 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
152 SCSIDevice *d;
153 Error *local_err = NULL;
155 if (dev->channel > bus->info->max_channel) {
156 error_setg(errp, "bad scsi channel id: %d", dev->channel);
157 return;
159 if (dev->id != -1 && dev->id > bus->info->max_target) {
160 error_setg(errp, "bad scsi device id: %d", dev->id);
161 return;
163 if (dev->lun != -1 && dev->lun > bus->info->max_lun) {
164 error_setg(errp, "bad scsi device lun: %d", dev->lun);
165 return;
168 if (dev->id == -1) {
169 int id = -1;
170 if (dev->lun == -1) {
171 dev->lun = 0;
173 do {
174 d = scsi_device_find(bus, dev->channel, ++id, dev->lun);
175 } while (d && d->lun == dev->lun && id < bus->info->max_target);
176 if (d && d->lun == dev->lun) {
177 error_setg(errp, "no free target");
178 return;
180 dev->id = id;
181 } else if (dev->lun == -1) {
182 int lun = -1;
183 do {
184 d = scsi_device_find(bus, dev->channel, dev->id, ++lun);
185 } while (d && d->lun == lun && lun < bus->info->max_lun);
186 if (d && d->lun == lun) {
187 error_setg(errp, "no free lun");
188 return;
190 dev->lun = lun;
191 } else {
192 d = scsi_device_find(bus, dev->channel, dev->id, dev->lun);
193 assert(d);
194 if (d->lun == dev->lun && dev != d) {
195 error_setg(errp, "lun already used by '%s'", d->qdev.id);
196 return;
200 QTAILQ_INIT(&dev->requests);
201 scsi_device_realize(dev, &local_err);
202 if (local_err) {
203 error_propagate(errp, local_err);
204 return;
206 dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb,
207 dev);
210 static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp)
212 SCSIDevice *dev = SCSI_DEVICE(qdev);
214 if (dev->vmsentry) {
215 qemu_del_vm_change_state_handler(dev->vmsentry);
218 scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE));
219 blockdev_mark_auto_del(dev->conf.blk);
222 /* handle legacy '-drive if=scsi,...' cmd line args */
223 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
224 int unit, bool removable, int bootindex,
225 const char *serial, Error **errp)
227 const char *driver;
228 char *name;
229 DeviceState *dev;
230 Error *err = NULL;
232 driver = blk_is_sg(blk) ? "scsi-generic" : "scsi-disk";
233 dev = qdev_create(&bus->qbus, driver);
234 name = g_strdup_printf("legacy[%d]", unit);
235 object_property_add_child(OBJECT(bus), name, OBJECT(dev), NULL);
236 g_free(name);
238 qdev_prop_set_uint32(dev, "scsi-id", unit);
239 if (bootindex >= 0) {
240 object_property_set_int(OBJECT(dev), bootindex, "bootindex",
241 &error_abort);
243 if (object_property_find(OBJECT(dev), "removable", NULL)) {
244 qdev_prop_set_bit(dev, "removable", removable);
246 if (serial && object_property_find(OBJECT(dev), "serial", NULL)) {
247 qdev_prop_set_string(dev, "serial", serial);
249 qdev_prop_set_drive(dev, "drive", blk, &err);
250 if (err) {
251 error_propagate(errp, err);
252 object_unparent(OBJECT(dev));
253 return NULL;
255 object_property_set_bool(OBJECT(dev), true, "realized", &err);
256 if (err != NULL) {
257 error_propagate(errp, err);
258 object_unparent(OBJECT(dev));
259 return NULL;
261 return SCSI_DEVICE(dev);
264 void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp)
266 Location loc;
267 DriveInfo *dinfo;
268 int unit;
269 Error *err = NULL;
271 loc_push_none(&loc);
272 for (unit = 0; unit <= bus->info->max_target; unit++) {
273 dinfo = drive_get(IF_SCSI, bus->busnr, unit);
274 if (dinfo == NULL) {
275 continue;
277 qemu_opts_loc_restore(dinfo->opts);
278 scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo),
279 unit, false, -1, NULL, &err);
280 if (err != NULL) {
281 error_propagate(errp, err);
282 break;
285 loc_pop(&loc);
288 static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf)
290 scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD));
291 scsi_req_complete(req, CHECK_CONDITION);
292 return 0;
295 static const struct SCSIReqOps reqops_invalid_field = {
296 .size = sizeof(SCSIRequest),
297 .send_command = scsi_invalid_field
300 /* SCSIReqOps implementation for invalid commands. */
302 static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf)
304 scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE));
305 scsi_req_complete(req, CHECK_CONDITION);
306 return 0;
309 static const struct SCSIReqOps reqops_invalid_opcode = {
310 .size = sizeof(SCSIRequest),
311 .send_command = scsi_invalid_command
314 /* SCSIReqOps implementation for unit attention conditions. */
316 static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf)
318 if (req->dev->unit_attention.key == UNIT_ATTENTION) {
319 scsi_req_build_sense(req, req->dev->unit_attention);
320 } else if (req->bus->unit_attention.key == UNIT_ATTENTION) {
321 scsi_req_build_sense(req, req->bus->unit_attention);
323 scsi_req_complete(req, CHECK_CONDITION);
324 return 0;
327 static const struct SCSIReqOps reqops_unit_attention = {
328 .size = sizeof(SCSIRequest),
329 .send_command = scsi_unit_attention
332 /* SCSIReqOps implementation for REPORT LUNS and for commands sent to
333 an invalid LUN. */
335 typedef struct SCSITargetReq SCSITargetReq;
337 struct SCSITargetReq {
338 SCSIRequest req;
339 int len;
340 uint8_t *buf;
341 int buf_len;
344 static void store_lun(uint8_t *outbuf, int lun)
346 if (lun < 256) {
347 outbuf[1] = lun;
348 return;
350 outbuf[1] = (lun & 255);
351 outbuf[0] = (lun >> 8) | 0x40;
354 static bool scsi_target_emulate_report_luns(SCSITargetReq *r)
356 BusChild *kid;
357 int i, len, n;
358 int channel, id;
359 bool found_lun0;
361 if (r->req.cmd.xfer < 16) {
362 return false;
364 if (r->req.cmd.buf[2] > 2) {
365 return false;
367 channel = r->req.dev->channel;
368 id = r->req.dev->id;
369 found_lun0 = false;
370 n = 0;
371 QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) {
372 DeviceState *qdev = kid->child;
373 SCSIDevice *dev = SCSI_DEVICE(qdev);
375 if (dev->channel == channel && dev->id == id) {
376 if (dev->lun == 0) {
377 found_lun0 = true;
379 n += 8;
382 if (!found_lun0) {
383 n += 8;
386 scsi_target_alloc_buf(&r->req, n + 8);
388 len = MIN(n + 8, r->req.cmd.xfer & ~7);
389 memset(r->buf, 0, len);
390 stl_be_p(&r->buf[0], n);
391 i = found_lun0 ? 8 : 16;
392 QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) {
393 DeviceState *qdev = kid->child;
394 SCSIDevice *dev = SCSI_DEVICE(qdev);
396 if (dev->channel == channel && dev->id == id) {
397 store_lun(&r->buf[i], dev->lun);
398 i += 8;
401 assert(i == n + 8);
402 r->len = len;
403 return true;
406 static bool scsi_target_emulate_inquiry(SCSITargetReq *r)
408 assert(r->req.dev->lun != r->req.lun);
410 scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN);
412 if (r->req.cmd.buf[1] & 0x2) {
413 /* Command support data - optional, not implemented */
414 return false;
417 if (r->req.cmd.buf[1] & 0x1) {
418 /* Vital product data */
419 uint8_t page_code = r->req.cmd.buf[2];
420 r->buf[r->len++] = page_code ; /* this page */
421 r->buf[r->len++] = 0x00;
423 switch (page_code) {
424 case 0x00: /* Supported page codes, mandatory */
426 int pages;
427 pages = r->len++;
428 r->buf[r->len++] = 0x00; /* list of supported pages (this page) */
429 r->buf[pages] = r->len - pages - 1; /* number of pages */
430 break;
432 default:
433 return false;
435 /* done with EVPD */
436 assert(r->len < r->buf_len);
437 r->len = MIN(r->req.cmd.xfer, r->len);
438 return true;
441 /* Standard INQUIRY data */
442 if (r->req.cmd.buf[2] != 0) {
443 return false;
446 /* PAGE CODE == 0 */
447 r->len = MIN(r->req.cmd.xfer, SCSI_INQUIRY_LEN);
448 memset(r->buf, 0, r->len);
449 if (r->req.lun != 0) {
450 r->buf[0] = TYPE_NO_LUN;
451 } else {
452 r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE;
453 r->buf[2] = 5; /* Version */
454 r->buf[3] = 2 | 0x10; /* HiSup, response data format */
455 r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */
456 r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */
457 memcpy(&r->buf[8], "QEMU ", 8);
458 memcpy(&r->buf[16], "QEMU TARGET ", 16);
459 pstrcpy((char *) &r->buf[32], 4, qemu_hw_version());
461 return true;
464 static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf)
466 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
468 switch (buf[0]) {
469 case REPORT_LUNS:
470 if (!scsi_target_emulate_report_luns(r)) {
471 goto illegal_request;
473 break;
474 case INQUIRY:
475 if (!scsi_target_emulate_inquiry(r)) {
476 goto illegal_request;
478 break;
479 case REQUEST_SENSE:
480 scsi_target_alloc_buf(&r->req, SCSI_SENSE_LEN);
481 r->len = scsi_device_get_sense(r->req.dev, r->buf,
482 MIN(req->cmd.xfer, r->buf_len),
483 (req->cmd.buf[1] & 1) == 0);
484 if (r->req.dev->sense_is_ua) {
485 scsi_device_unit_attention_reported(req->dev);
486 r->req.dev->sense_len = 0;
487 r->req.dev->sense_is_ua = false;
489 break;
490 case TEST_UNIT_READY:
491 break;
492 default:
493 scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED));
494 scsi_req_complete(req, CHECK_CONDITION);
495 return 0;
496 illegal_request:
497 scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD));
498 scsi_req_complete(req, CHECK_CONDITION);
499 return 0;
502 if (!r->len) {
503 scsi_req_complete(req, GOOD);
505 return r->len;
508 static void scsi_target_read_data(SCSIRequest *req)
510 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
511 uint32_t n;
513 n = r->len;
514 if (n > 0) {
515 r->len = 0;
516 scsi_req_data(&r->req, n);
517 } else {
518 scsi_req_complete(&r->req, GOOD);
522 static uint8_t *scsi_target_get_buf(SCSIRequest *req)
524 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
526 return r->buf;
529 static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len)
531 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
533 r->buf = g_malloc(len);
534 r->buf_len = len;
536 return r->buf;
539 static void scsi_target_free_buf(SCSIRequest *req)
541 SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req);
543 g_free(r->buf);
546 static const struct SCSIReqOps reqops_target_command = {
547 .size = sizeof(SCSITargetReq),
548 .send_command = scsi_target_send_command,
549 .read_data = scsi_target_read_data,
550 .get_buf = scsi_target_get_buf,
551 .free_req = scsi_target_free_buf,
555 SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d,
556 uint32_t tag, uint32_t lun, void *hba_private)
558 SCSIRequest *req;
559 SCSIBus *bus = scsi_bus_from_device(d);
560 BusState *qbus = BUS(bus);
561 const int memset_off = offsetof(SCSIRequest, sense)
562 + sizeof(req->sense);
564 req = g_malloc(reqops->size);
565 memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off);
566 req->refcount = 1;
567 req->bus = bus;
568 req->dev = d;
569 req->tag = tag;
570 req->lun = lun;
571 req->hba_private = hba_private;
572 req->status = -1;
573 req->ops = reqops;
574 object_ref(OBJECT(d));
575 object_ref(OBJECT(qbus->parent));
576 notifier_list_init(&req->cancel_notifiers);
577 trace_scsi_req_alloc(req->dev->id, req->lun, req->tag);
578 return req;
581 SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun,
582 uint8_t *buf, void *hba_private)
584 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
585 const SCSIReqOps *ops;
586 SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d);
587 SCSIRequest *req;
588 SCSICommand cmd = { .len = 0 };
589 int ret;
591 if ((d->unit_attention.key == UNIT_ATTENTION ||
592 bus->unit_attention.key == UNIT_ATTENTION) &&
593 (buf[0] != INQUIRY &&
594 buf[0] != REPORT_LUNS &&
595 buf[0] != GET_CONFIGURATION &&
596 buf[0] != GET_EVENT_STATUS_NOTIFICATION &&
599 * If we already have a pending unit attention condition,
600 * report this one before triggering another one.
602 !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) {
603 ops = &reqops_unit_attention;
604 } else if (lun != d->lun ||
605 buf[0] == REPORT_LUNS ||
606 (buf[0] == REQUEST_SENSE && d->sense_len)) {
607 ops = &reqops_target_command;
608 } else {
609 ops = NULL;
612 if (ops != NULL || !sc->parse_cdb) {
613 ret = scsi_req_parse_cdb(d, &cmd, buf);
614 } else {
615 ret = sc->parse_cdb(d, &cmd, buf, hba_private);
618 if (ret != 0) {
619 trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]);
620 req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private);
621 } else {
622 assert(cmd.len != 0);
623 trace_scsi_req_parsed(d->id, lun, tag, buf[0],
624 cmd.mode, cmd.xfer);
625 if (cmd.lba != -1) {
626 trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0],
627 cmd.lba);
630 if (cmd.xfer > INT32_MAX) {
631 req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private);
632 } else if (ops) {
633 req = scsi_req_alloc(ops, d, tag, lun, hba_private);
634 } else {
635 req = scsi_device_alloc_req(d, tag, lun, buf, hba_private);
639 req->cmd = cmd;
640 req->resid = req->cmd.xfer;
642 switch (buf[0]) {
643 case INQUIRY:
644 trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]);
645 break;
646 case TEST_UNIT_READY:
647 trace_scsi_test_unit_ready(d->id, lun, tag);
648 break;
649 case REPORT_LUNS:
650 trace_scsi_report_luns(d->id, lun, tag);
651 break;
652 case REQUEST_SENSE:
653 trace_scsi_request_sense(d->id, lun, tag);
654 break;
655 default:
656 break;
659 return req;
662 uint8_t *scsi_req_get_buf(SCSIRequest *req)
664 return req->ops->get_buf(req);
667 static void scsi_clear_unit_attention(SCSIRequest *req)
669 SCSISense *ua;
670 if (req->dev->unit_attention.key != UNIT_ATTENTION &&
671 req->bus->unit_attention.key != UNIT_ATTENTION) {
672 return;
676 * If an INQUIRY command enters the enabled command state,
677 * the device server shall [not] clear any unit attention condition;
678 * See also MMC-6, paragraphs 6.5 and 6.6.2.
680 if (req->cmd.buf[0] == INQUIRY ||
681 req->cmd.buf[0] == GET_CONFIGURATION ||
682 req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) {
683 return;
686 if (req->dev->unit_attention.key == UNIT_ATTENTION) {
687 ua = &req->dev->unit_attention;
688 } else {
689 ua = &req->bus->unit_attention;
693 * If a REPORT LUNS command enters the enabled command state, [...]
694 * the device server shall clear any pending unit attention condition
695 * with an additional sense code of REPORTED LUNS DATA HAS CHANGED.
697 if (req->cmd.buf[0] == REPORT_LUNS &&
698 !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc &&
699 ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) {
700 return;
703 *ua = SENSE_CODE(NO_SENSE);
706 int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len)
708 int ret;
710 assert(len >= 14);
711 if (!req->sense_len) {
712 return 0;
715 ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true);
718 * FIXME: clearing unit attention conditions upon autosense should be done
719 * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b
720 * (SAM-5, 5.14).
722 * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and
723 * 10b for HBAs that do not support it (do not call scsi_req_get_sense).
724 * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b.
726 if (req->dev->sense_is_ua) {
727 scsi_device_unit_attention_reported(req->dev);
728 req->dev->sense_len = 0;
729 req->dev->sense_is_ua = false;
731 return ret;
734 int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed)
736 return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed);
739 void scsi_req_build_sense(SCSIRequest *req, SCSISense sense)
741 trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag,
742 sense.key, sense.asc, sense.ascq);
743 memset(req->sense, 0, 18);
744 req->sense[0] = 0x70;
745 req->sense[2] = sense.key;
746 req->sense[7] = 10;
747 req->sense[12] = sense.asc;
748 req->sense[13] = sense.ascq;
749 req->sense_len = 18;
752 static void scsi_req_enqueue_internal(SCSIRequest *req)
754 assert(!req->enqueued);
755 scsi_req_ref(req);
756 if (req->bus->info->get_sg_list) {
757 req->sg = req->bus->info->get_sg_list(req);
758 } else {
759 req->sg = NULL;
761 req->enqueued = true;
762 QTAILQ_INSERT_TAIL(&req->dev->requests, req, next);
765 int32_t scsi_req_enqueue(SCSIRequest *req)
767 int32_t rc;
769 assert(!req->retry);
770 scsi_req_enqueue_internal(req);
771 scsi_req_ref(req);
772 rc = req->ops->send_command(req, req->cmd.buf);
773 scsi_req_unref(req);
774 return rc;
777 static void scsi_req_dequeue(SCSIRequest *req)
779 trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag);
780 req->retry = false;
781 if (req->enqueued) {
782 QTAILQ_REMOVE(&req->dev->requests, req, next);
783 req->enqueued = false;
784 scsi_req_unref(req);
788 static int scsi_get_performance_length(int num_desc, int type, int data_type)
790 /* MMC-6, paragraph 6.7. */
791 switch (type) {
792 case 0:
793 if ((data_type & 3) == 0) {
794 /* Each descriptor is as in Table 295 - Nominal performance. */
795 return 16 * num_desc + 8;
796 } else {
797 /* Each descriptor is as in Table 296 - Exceptions. */
798 return 6 * num_desc + 8;
800 case 1:
801 case 4:
802 case 5:
803 return 8 * num_desc + 8;
804 case 2:
805 return 2048 * num_desc + 8;
806 case 3:
807 return 16 * num_desc + 8;
808 default:
809 return 8;
813 static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf)
815 int byte_block = (buf[2] >> 2) & 0x1;
816 int type = (buf[2] >> 4) & 0x1;
817 int xfer_unit;
819 if (byte_block) {
820 if (type) {
821 xfer_unit = dev->blocksize;
822 } else {
823 xfer_unit = 512;
825 } else {
826 xfer_unit = 1;
829 return xfer_unit;
832 static int ata_passthrough_12_xfer(SCSIDevice *dev, uint8_t *buf)
834 int length = buf[2] & 0x3;
835 int xfer;
836 int unit = ata_passthrough_xfer_unit(dev, buf);
838 switch (length) {
839 case 0:
840 case 3: /* USB-specific. */
841 default:
842 xfer = 0;
843 break;
844 case 1:
845 xfer = buf[3];
846 break;
847 case 2:
848 xfer = buf[4];
849 break;
852 return xfer * unit;
855 static int ata_passthrough_16_xfer(SCSIDevice *dev, uint8_t *buf)
857 int extend = buf[1] & 0x1;
858 int length = buf[2] & 0x3;
859 int xfer;
860 int unit = ata_passthrough_xfer_unit(dev, buf);
862 switch (length) {
863 case 0:
864 case 3: /* USB-specific. */
865 default:
866 xfer = 0;
867 break;
868 case 1:
869 xfer = buf[4];
870 xfer |= (extend ? buf[3] << 8 : 0);
871 break;
872 case 2:
873 xfer = buf[6];
874 xfer |= (extend ? buf[5] << 8 : 0);
875 break;
878 return xfer * unit;
881 uint32_t scsi_data_cdb_xfer(uint8_t *buf)
883 if ((buf[0] >> 5) == 0 && buf[4] == 0) {
884 return 256;
885 } else {
886 return scsi_cdb_xfer(buf);
890 uint32_t scsi_cdb_xfer(uint8_t *buf)
892 switch (buf[0] >> 5) {
893 case 0:
894 return buf[4];
895 break;
896 case 1:
897 case 2:
898 return lduw_be_p(&buf[7]);
899 break;
900 case 4:
901 return ldl_be_p(&buf[10]) & 0xffffffffULL;
902 break;
903 case 5:
904 return ldl_be_p(&buf[6]) & 0xffffffffULL;
905 break;
906 default:
907 return -1;
911 static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
913 cmd->xfer = scsi_cdb_xfer(buf);
914 switch (buf[0]) {
915 case TEST_UNIT_READY:
916 case REWIND:
917 case START_STOP:
918 case SET_CAPACITY:
919 case WRITE_FILEMARKS:
920 case WRITE_FILEMARKS_16:
921 case SPACE:
922 case RESERVE:
923 case RELEASE:
924 case ERASE:
925 case ALLOW_MEDIUM_REMOVAL:
926 case SEEK_10:
927 case SYNCHRONIZE_CACHE:
928 case SYNCHRONIZE_CACHE_16:
929 case LOCATE_16:
930 case LOCK_UNLOCK_CACHE:
931 case SET_CD_SPEED:
932 case SET_LIMITS:
933 case WRITE_LONG_10:
934 case UPDATE_BLOCK:
935 case RESERVE_TRACK:
936 case SET_READ_AHEAD:
937 case PRE_FETCH:
938 case PRE_FETCH_16:
939 case ALLOW_OVERWRITE:
940 cmd->xfer = 0;
941 break;
942 case VERIFY_10:
943 case VERIFY_12:
944 case VERIFY_16:
945 if ((buf[1] & 2) == 0) {
946 cmd->xfer = 0;
947 } else if ((buf[1] & 4) != 0) {
948 cmd->xfer = 1;
950 cmd->xfer *= dev->blocksize;
951 break;
952 case MODE_SENSE:
953 break;
954 case WRITE_SAME_10:
955 case WRITE_SAME_16:
956 cmd->xfer = dev->blocksize;
957 break;
958 case READ_CAPACITY_10:
959 cmd->xfer = 8;
960 break;
961 case READ_BLOCK_LIMITS:
962 cmd->xfer = 6;
963 break;
964 case SEND_VOLUME_TAG:
965 /* GPCMD_SET_STREAMING from multimedia commands. */
966 if (dev->type == TYPE_ROM) {
967 cmd->xfer = buf[10] | (buf[9] << 8);
968 } else {
969 cmd->xfer = buf[9] | (buf[8] << 8);
971 break;
972 case WRITE_6:
973 /* length 0 means 256 blocks */
974 if (cmd->xfer == 0) {
975 cmd->xfer = 256;
977 /* fall through */
978 case WRITE_10:
979 case WRITE_VERIFY_10:
980 case WRITE_12:
981 case WRITE_VERIFY_12:
982 case WRITE_16:
983 case WRITE_VERIFY_16:
984 cmd->xfer *= dev->blocksize;
985 break;
986 case READ_6:
987 case READ_REVERSE:
988 /* length 0 means 256 blocks */
989 if (cmd->xfer == 0) {
990 cmd->xfer = 256;
992 /* fall through */
993 case READ_10:
994 case READ_12:
995 case READ_16:
996 cmd->xfer *= dev->blocksize;
997 break;
998 case FORMAT_UNIT:
999 /* MMC mandates the parameter list to be 12-bytes long. Parameters
1000 * for block devices are restricted to the header right now. */
1001 if (dev->type == TYPE_ROM && (buf[1] & 16)) {
1002 cmd->xfer = 12;
1003 } else {
1004 cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4);
1006 break;
1007 case INQUIRY:
1008 case RECEIVE_DIAGNOSTIC:
1009 case SEND_DIAGNOSTIC:
1010 cmd->xfer = buf[4] | (buf[3] << 8);
1011 break;
1012 case READ_CD:
1013 case READ_BUFFER:
1014 case WRITE_BUFFER:
1015 case SEND_CUE_SHEET:
1016 cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16);
1017 break;
1018 case PERSISTENT_RESERVE_OUT:
1019 cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL;
1020 break;
1021 case ERASE_12:
1022 if (dev->type == TYPE_ROM) {
1023 /* MMC command GET PERFORMANCE. */
1024 cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8),
1025 buf[10], buf[1] & 0x1f);
1027 break;
1028 case MECHANISM_STATUS:
1029 case READ_DVD_STRUCTURE:
1030 case SEND_DVD_STRUCTURE:
1031 case MAINTENANCE_OUT:
1032 case MAINTENANCE_IN:
1033 if (dev->type == TYPE_ROM) {
1034 /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */
1035 cmd->xfer = buf[9] | (buf[8] << 8);
1037 break;
1038 case ATA_PASSTHROUGH_12:
1039 if (dev->type == TYPE_ROM) {
1040 /* BLANK command of MMC */
1041 cmd->xfer = 0;
1042 } else {
1043 cmd->xfer = ata_passthrough_12_xfer(dev, buf);
1045 break;
1046 case ATA_PASSTHROUGH_16:
1047 cmd->xfer = ata_passthrough_16_xfer(dev, buf);
1048 break;
1050 return 0;
1053 static int scsi_req_stream_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
1055 switch (buf[0]) {
1056 /* stream commands */
1057 case ERASE_12:
1058 case ERASE_16:
1059 cmd->xfer = 0;
1060 break;
1061 case READ_6:
1062 case READ_REVERSE:
1063 case RECOVER_BUFFERED_DATA:
1064 case WRITE_6:
1065 cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16);
1066 if (buf[1] & 0x01) { /* fixed */
1067 cmd->xfer *= dev->blocksize;
1069 break;
1070 case READ_16:
1071 case READ_REVERSE_16:
1072 case VERIFY_16:
1073 case WRITE_16:
1074 cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16);
1075 if (buf[1] & 0x01) { /* fixed */
1076 cmd->xfer *= dev->blocksize;
1078 break;
1079 case REWIND:
1080 case LOAD_UNLOAD:
1081 cmd->xfer = 0;
1082 break;
1083 case SPACE_16:
1084 cmd->xfer = buf[13] | (buf[12] << 8);
1085 break;
1086 case READ_POSITION:
1087 switch (buf[1] & 0x1f) /* operation code */ {
1088 case SHORT_FORM_BLOCK_ID:
1089 case SHORT_FORM_VENDOR_SPECIFIC:
1090 cmd->xfer = 20;
1091 break;
1092 case LONG_FORM:
1093 cmd->xfer = 32;
1094 break;
1095 case EXTENDED_FORM:
1096 cmd->xfer = buf[8] | (buf[7] << 8);
1097 break;
1098 default:
1099 return -1;
1102 break;
1103 case FORMAT_UNIT:
1104 cmd->xfer = buf[4] | (buf[3] << 8);
1105 break;
1106 /* generic commands */
1107 default:
1108 return scsi_req_xfer(cmd, dev, buf);
1110 return 0;
1113 static int scsi_req_medium_changer_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
1115 switch (buf[0]) {
1116 /* medium changer commands */
1117 case EXCHANGE_MEDIUM:
1118 case INITIALIZE_ELEMENT_STATUS:
1119 case INITIALIZE_ELEMENT_STATUS_WITH_RANGE:
1120 case MOVE_MEDIUM:
1121 case POSITION_TO_ELEMENT:
1122 cmd->xfer = 0;
1123 break;
1124 case READ_ELEMENT_STATUS:
1125 cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16);
1126 break;
1128 /* generic commands */
1129 default:
1130 return scsi_req_xfer(cmd, dev, buf);
1132 return 0;
1136 static void scsi_cmd_xfer_mode(SCSICommand *cmd)
1138 if (!cmd->xfer) {
1139 cmd->mode = SCSI_XFER_NONE;
1140 return;
1142 switch (cmd->buf[0]) {
1143 case WRITE_6:
1144 case WRITE_10:
1145 case WRITE_VERIFY_10:
1146 case WRITE_12:
1147 case WRITE_VERIFY_12:
1148 case WRITE_16:
1149 case WRITE_VERIFY_16:
1150 case VERIFY_10:
1151 case VERIFY_12:
1152 case VERIFY_16:
1153 case COPY:
1154 case COPY_VERIFY:
1155 case COMPARE:
1156 case CHANGE_DEFINITION:
1157 case LOG_SELECT:
1158 case MODE_SELECT:
1159 case MODE_SELECT_10:
1160 case SEND_DIAGNOSTIC:
1161 case WRITE_BUFFER:
1162 case FORMAT_UNIT:
1163 case REASSIGN_BLOCKS:
1164 case SEARCH_EQUAL:
1165 case SEARCH_HIGH:
1166 case SEARCH_LOW:
1167 case UPDATE_BLOCK:
1168 case WRITE_LONG_10:
1169 case WRITE_SAME_10:
1170 case WRITE_SAME_16:
1171 case UNMAP:
1172 case SEARCH_HIGH_12:
1173 case SEARCH_EQUAL_12:
1174 case SEARCH_LOW_12:
1175 case MEDIUM_SCAN:
1176 case SEND_VOLUME_TAG:
1177 case SEND_CUE_SHEET:
1178 case SEND_DVD_STRUCTURE:
1179 case PERSISTENT_RESERVE_OUT:
1180 case MAINTENANCE_OUT:
1181 cmd->mode = SCSI_XFER_TO_DEV;
1182 break;
1183 case ATA_PASSTHROUGH_12:
1184 case ATA_PASSTHROUGH_16:
1185 /* T_DIR */
1186 cmd->mode = (cmd->buf[2] & 0x8) ?
1187 SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV;
1188 break;
1189 default:
1190 cmd->mode = SCSI_XFER_FROM_DEV;
1191 break;
1195 static uint64_t scsi_cmd_lba(SCSICommand *cmd)
1197 uint8_t *buf = cmd->buf;
1198 uint64_t lba;
1200 switch (buf[0] >> 5) {
1201 case 0:
1202 lba = ldl_be_p(&buf[0]) & 0x1fffff;
1203 break;
1204 case 1:
1205 case 2:
1206 case 5:
1207 lba = ldl_be_p(&buf[2]) & 0xffffffffULL;
1208 break;
1209 case 4:
1210 lba = ldq_be_p(&buf[2]);
1211 break;
1212 default:
1213 lba = -1;
1216 return lba;
1219 int scsi_cdb_length(uint8_t *buf) {
1220 int cdb_len;
1222 switch (buf[0] >> 5) {
1223 case 0:
1224 cdb_len = 6;
1225 break;
1226 case 1:
1227 case 2:
1228 cdb_len = 10;
1229 break;
1230 case 4:
1231 cdb_len = 16;
1232 break;
1233 case 5:
1234 cdb_len = 12;
1235 break;
1236 default:
1237 cdb_len = -1;
1239 return cdb_len;
1242 int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf)
1244 int rc;
1245 int len;
1247 cmd->lba = -1;
1248 len = scsi_cdb_length(buf);
1249 if (len < 0) {
1250 return -1;
1253 cmd->len = len;
1254 switch (dev->type) {
1255 case TYPE_TAPE:
1256 rc = scsi_req_stream_xfer(cmd, dev, buf);
1257 break;
1258 case TYPE_MEDIUM_CHANGER:
1259 rc = scsi_req_medium_changer_xfer(cmd, dev, buf);
1260 break;
1261 default:
1262 rc = scsi_req_xfer(cmd, dev, buf);
1263 break;
1266 if (rc != 0)
1267 return rc;
1269 memcpy(cmd->buf, buf, cmd->len);
1270 scsi_cmd_xfer_mode(cmd);
1271 cmd->lba = scsi_cmd_lba(cmd);
1272 return 0;
1275 void scsi_device_report_change(SCSIDevice *dev, SCSISense sense)
1277 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
1279 scsi_device_set_ua(dev, sense);
1280 if (bus->info->change) {
1281 bus->info->change(bus, dev, sense);
1286 * Predefined sense codes
1289 /* No sense data available */
1290 const struct SCSISense sense_code_NO_SENSE = {
1291 .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00
1294 /* LUN not ready, Manual intervention required */
1295 const struct SCSISense sense_code_LUN_NOT_READY = {
1296 .key = NOT_READY, .asc = 0x04, .ascq = 0x03
1299 /* LUN not ready, Medium not present */
1300 const struct SCSISense sense_code_NO_MEDIUM = {
1301 .key = NOT_READY, .asc = 0x3a, .ascq = 0x00
1304 /* LUN not ready, medium removal prevented */
1305 const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = {
1306 .key = NOT_READY, .asc = 0x53, .ascq = 0x02
1309 /* Hardware error, internal target failure */
1310 const struct SCSISense sense_code_TARGET_FAILURE = {
1311 .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00
1314 /* Illegal request, invalid command operation code */
1315 const struct SCSISense sense_code_INVALID_OPCODE = {
1316 .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00
1319 /* Illegal request, LBA out of range */
1320 const struct SCSISense sense_code_LBA_OUT_OF_RANGE = {
1321 .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00
1324 /* Illegal request, Invalid field in CDB */
1325 const struct SCSISense sense_code_INVALID_FIELD = {
1326 .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00
1329 /* Illegal request, Invalid field in parameter list */
1330 const struct SCSISense sense_code_INVALID_PARAM = {
1331 .key = ILLEGAL_REQUEST, .asc = 0x26, .ascq = 0x00
1334 /* Illegal request, Parameter list length error */
1335 const struct SCSISense sense_code_INVALID_PARAM_LEN = {
1336 .key = ILLEGAL_REQUEST, .asc = 0x1a, .ascq = 0x00
1339 /* Illegal request, LUN not supported */
1340 const struct SCSISense sense_code_LUN_NOT_SUPPORTED = {
1341 .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00
1344 /* Illegal request, Saving parameters not supported */
1345 const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = {
1346 .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00
1349 /* Illegal request, Incompatible medium installed */
1350 const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = {
1351 .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00
1354 /* Illegal request, medium removal prevented */
1355 const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = {
1356 .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x02
1359 /* Illegal request, Invalid Transfer Tag */
1360 const struct SCSISense sense_code_INVALID_TAG = {
1361 .key = ILLEGAL_REQUEST, .asc = 0x4b, .ascq = 0x01
1364 /* Command aborted, I/O process terminated */
1365 const struct SCSISense sense_code_IO_ERROR = {
1366 .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06
1369 /* Command aborted, I_T Nexus loss occurred */
1370 const struct SCSISense sense_code_I_T_NEXUS_LOSS = {
1371 .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07
1374 /* Command aborted, Logical Unit failure */
1375 const struct SCSISense sense_code_LUN_FAILURE = {
1376 .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01
1379 /* Command aborted, Overlapped Commands Attempted */
1380 const struct SCSISense sense_code_OVERLAPPED_COMMANDS = {
1381 .key = ABORTED_COMMAND, .asc = 0x4e, .ascq = 0x00
1384 /* Unit attention, Capacity data has changed */
1385 const struct SCSISense sense_code_CAPACITY_CHANGED = {
1386 .key = UNIT_ATTENTION, .asc = 0x2a, .ascq = 0x09
1389 /* Unit attention, Power on, reset or bus device reset occurred */
1390 const struct SCSISense sense_code_RESET = {
1391 .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00
1394 /* Unit attention, No medium */
1395 const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = {
1396 .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00
1399 /* Unit attention, Medium may have changed */
1400 const struct SCSISense sense_code_MEDIUM_CHANGED = {
1401 .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00
1404 /* Unit attention, Reported LUNs data has changed */
1405 const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = {
1406 .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e
1409 /* Unit attention, Device internal reset */
1410 const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = {
1411 .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04
1414 /* Data Protection, Write Protected */
1415 const struct SCSISense sense_code_WRITE_PROTECTED = {
1416 .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x00
1419 /* Data Protection, Space Allocation Failed Write Protect */
1420 const struct SCSISense sense_code_SPACE_ALLOC_FAILED = {
1421 .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x07
1425 * scsi_build_sense
1427 * Convert between fixed and descriptor sense buffers
1429 int scsi_build_sense(uint8_t *in_buf, int in_len,
1430 uint8_t *buf, int len, bool fixed)
1432 bool fixed_in;
1433 SCSISense sense;
1434 if (!fixed && len < 8) {
1435 return 0;
1438 if (in_len == 0) {
1439 sense.key = NO_SENSE;
1440 sense.asc = 0;
1441 sense.ascq = 0;
1442 } else {
1443 fixed_in = (in_buf[0] & 2) == 0;
1445 if (fixed == fixed_in) {
1446 memcpy(buf, in_buf, MIN(len, in_len));
1447 return MIN(len, in_len);
1450 if (fixed_in) {
1451 sense.key = in_buf[2];
1452 sense.asc = in_buf[12];
1453 sense.ascq = in_buf[13];
1454 } else {
1455 sense.key = in_buf[1];
1456 sense.asc = in_buf[2];
1457 sense.ascq = in_buf[3];
1461 memset(buf, 0, len);
1462 if (fixed) {
1463 /* Return fixed format sense buffer */
1464 buf[0] = 0x70;
1465 buf[2] = sense.key;
1466 buf[7] = 10;
1467 buf[12] = sense.asc;
1468 buf[13] = sense.ascq;
1469 return MIN(len, SCSI_SENSE_LEN);
1470 } else {
1471 /* Return descriptor format sense buffer */
1472 buf[0] = 0x72;
1473 buf[1] = sense.key;
1474 buf[2] = sense.asc;
1475 buf[3] = sense.ascq;
1476 return 8;
1480 const char *scsi_command_name(uint8_t cmd)
1482 static const char *names[] = {
1483 [ TEST_UNIT_READY ] = "TEST_UNIT_READY",
1484 [ REWIND ] = "REWIND",
1485 [ REQUEST_SENSE ] = "REQUEST_SENSE",
1486 [ FORMAT_UNIT ] = "FORMAT_UNIT",
1487 [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS",
1488 [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS/INITIALIZE ELEMENT STATUS",
1489 /* LOAD_UNLOAD and INITIALIZE_ELEMENT_STATUS use the same operation code */
1490 [ READ_6 ] = "READ_6",
1491 [ WRITE_6 ] = "WRITE_6",
1492 [ SET_CAPACITY ] = "SET_CAPACITY",
1493 [ READ_REVERSE ] = "READ_REVERSE",
1494 [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS",
1495 [ SPACE ] = "SPACE",
1496 [ INQUIRY ] = "INQUIRY",
1497 [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA",
1498 [ MAINTENANCE_IN ] = "MAINTENANCE_IN",
1499 [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT",
1500 [ MODE_SELECT ] = "MODE_SELECT",
1501 [ RESERVE ] = "RESERVE",
1502 [ RELEASE ] = "RELEASE",
1503 [ COPY ] = "COPY",
1504 [ ERASE ] = "ERASE",
1505 [ MODE_SENSE ] = "MODE_SENSE",
1506 [ START_STOP ] = "START_STOP/LOAD_UNLOAD",
1507 /* LOAD_UNLOAD and START_STOP use the same operation code */
1508 [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC",
1509 [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC",
1510 [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL",
1511 [ READ_CAPACITY_10 ] = "READ_CAPACITY_10",
1512 [ READ_10 ] = "READ_10",
1513 [ WRITE_10 ] = "WRITE_10",
1514 [ SEEK_10 ] = "SEEK_10/POSITION_TO_ELEMENT",
1515 /* SEEK_10 and POSITION_TO_ELEMENT use the same operation code */
1516 [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10",
1517 [ VERIFY_10 ] = "VERIFY_10",
1518 [ SEARCH_HIGH ] = "SEARCH_HIGH",
1519 [ SEARCH_EQUAL ] = "SEARCH_EQUAL",
1520 [ SEARCH_LOW ] = "SEARCH_LOW",
1521 [ SET_LIMITS ] = "SET_LIMITS",
1522 [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION",
1523 /* READ_POSITION and PRE_FETCH use the same operation code */
1524 [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE",
1525 [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE",
1526 [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA/INITIALIZE_ELEMENT_STATUS_WITH_RANGE",
1527 /* READ_DEFECT_DATA and INITIALIZE_ELEMENT_STATUS_WITH_RANGE use the same operation code */
1528 [ MEDIUM_SCAN ] = "MEDIUM_SCAN",
1529 [ COMPARE ] = "COMPARE",
1530 [ COPY_VERIFY ] = "COPY_VERIFY",
1531 [ WRITE_BUFFER ] = "WRITE_BUFFER",
1532 [ READ_BUFFER ] = "READ_BUFFER",
1533 [ UPDATE_BLOCK ] = "UPDATE_BLOCK",
1534 [ READ_LONG_10 ] = "READ_LONG_10",
1535 [ WRITE_LONG_10 ] = "WRITE_LONG_10",
1536 [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION",
1537 [ WRITE_SAME_10 ] = "WRITE_SAME_10",
1538 [ UNMAP ] = "UNMAP",
1539 [ READ_TOC ] = "READ_TOC",
1540 [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT",
1541 [ SANITIZE ] = "SANITIZE",
1542 [ GET_CONFIGURATION ] = "GET_CONFIGURATION",
1543 [ LOG_SELECT ] = "LOG_SELECT",
1544 [ LOG_SENSE ] = "LOG_SENSE",
1545 [ MODE_SELECT_10 ] = "MODE_SELECT_10",
1546 [ RESERVE_10 ] = "RESERVE_10",
1547 [ RELEASE_10 ] = "RELEASE_10",
1548 [ MODE_SENSE_10 ] = "MODE_SENSE_10",
1549 [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN",
1550 [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT",
1551 [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16",
1552 [ EXTENDED_COPY ] = "EXTENDED_COPY",
1553 [ ATA_PASSTHROUGH_16 ] = "ATA_PASSTHROUGH_16",
1554 [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN",
1555 [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT",
1556 [ READ_16 ] = "READ_16",
1557 [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE",
1558 [ WRITE_16 ] = "WRITE_16",
1559 [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16",
1560 [ VERIFY_16 ] = "VERIFY_16",
1561 [ PRE_FETCH_16 ] = "PRE_FETCH_16",
1562 [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16",
1563 /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */
1564 [ LOCATE_16 ] = "LOCATE_16",
1565 [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16",
1566 /* ERASE_16 and WRITE_SAME_16 use the same operation code */
1567 [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16",
1568 [ WRITE_LONG_16 ] = "WRITE_LONG_16",
1569 [ REPORT_LUNS ] = "REPORT_LUNS",
1570 [ ATA_PASSTHROUGH_12 ] = "BLANK/ATA_PASSTHROUGH_12",
1571 [ MOVE_MEDIUM ] = "MOVE_MEDIUM",
1572 [ EXCHANGE_MEDIUM ] = "EXCHANGE MEDIUM",
1573 [ READ_12 ] = "READ_12",
1574 [ WRITE_12 ] = "WRITE_12",
1575 [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE",
1576 /* ERASE_12 and GET_PERFORMANCE use the same operation code */
1577 [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12",
1578 [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12",
1579 [ VERIFY_12 ] = "VERIFY_12",
1580 [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12",
1581 [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12",
1582 [ SEARCH_LOW_12 ] = "SEARCH_LOW_12",
1583 [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS",
1584 [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING",
1585 /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */
1586 [ READ_CD ] = "READ_CD",
1587 [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12",
1588 [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE",
1589 [ RESERVE_TRACK ] = "RESERVE_TRACK",
1590 [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET",
1591 [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE",
1592 [ SET_CD_SPEED ] = "SET_CD_SPEED",
1593 [ SET_READ_AHEAD ] = "SET_READ_AHEAD",
1594 [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE",
1595 [ MECHANISM_STATUS ] = "MECHANISM_STATUS",
1596 [ GET_EVENT_STATUS_NOTIFICATION ] = "GET_EVENT_STATUS_NOTIFICATION",
1597 [ READ_DISC_INFORMATION ] = "READ_DISC_INFORMATION",
1600 if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL)
1601 return "*UNKNOWN*";
1602 return names[cmd];
1605 SCSIRequest *scsi_req_ref(SCSIRequest *req)
1607 assert(req->refcount > 0);
1608 req->refcount++;
1609 return req;
1612 void scsi_req_unref(SCSIRequest *req)
1614 assert(req->refcount > 0);
1615 if (--req->refcount == 0) {
1616 BusState *qbus = req->dev->qdev.parent_bus;
1617 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus);
1619 if (bus->info->free_request && req->hba_private) {
1620 bus->info->free_request(bus, req->hba_private);
1622 if (req->ops->free_req) {
1623 req->ops->free_req(req);
1625 object_unref(OBJECT(req->dev));
1626 object_unref(OBJECT(qbus->parent));
1627 g_free(req);
1631 /* Tell the device that we finished processing this chunk of I/O. It
1632 will start the next chunk or complete the command. */
1633 void scsi_req_continue(SCSIRequest *req)
1635 if (req->io_canceled) {
1636 trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag);
1637 return;
1639 trace_scsi_req_continue(req->dev->id, req->lun, req->tag);
1640 if (req->cmd.mode == SCSI_XFER_TO_DEV) {
1641 req->ops->write_data(req);
1642 } else {
1643 req->ops->read_data(req);
1647 /* Called by the devices when data is ready for the HBA. The HBA should
1648 start a DMA operation to read or fill the device's data buffer.
1649 Once it completes, calling scsi_req_continue will restart I/O. */
1650 void scsi_req_data(SCSIRequest *req, int len)
1652 uint8_t *buf;
1653 if (req->io_canceled) {
1654 trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len);
1655 return;
1657 trace_scsi_req_data(req->dev->id, req->lun, req->tag, len);
1658 assert(req->cmd.mode != SCSI_XFER_NONE);
1659 if (!req->sg) {
1660 req->resid -= len;
1661 req->bus->info->transfer_data(req, len);
1662 return;
1665 /* If the device calls scsi_req_data and the HBA specified a
1666 * scatter/gather list, the transfer has to happen in a single
1667 * step. */
1668 assert(!req->dma_started);
1669 req->dma_started = true;
1671 buf = scsi_req_get_buf(req);
1672 if (req->cmd.mode == SCSI_XFER_FROM_DEV) {
1673 req->resid = dma_buf_read(buf, len, req->sg);
1674 } else {
1675 req->resid = dma_buf_write(buf, len, req->sg);
1677 scsi_req_continue(req);
1680 void scsi_req_print(SCSIRequest *req)
1682 FILE *fp = stderr;
1683 int i;
1685 fprintf(fp, "[%s id=%d] %s",
1686 req->dev->qdev.parent_bus->name,
1687 req->dev->id,
1688 scsi_command_name(req->cmd.buf[0]));
1689 for (i = 1; i < req->cmd.len; i++) {
1690 fprintf(fp, " 0x%02x", req->cmd.buf[i]);
1692 switch (req->cmd.mode) {
1693 case SCSI_XFER_NONE:
1694 fprintf(fp, " - none\n");
1695 break;
1696 case SCSI_XFER_FROM_DEV:
1697 fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer);
1698 break;
1699 case SCSI_XFER_TO_DEV:
1700 fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer);
1701 break;
1702 default:
1703 fprintf(fp, " - Oops\n");
1704 break;
1708 void scsi_req_complete(SCSIRequest *req, int status)
1710 assert(req->status == -1);
1711 req->status = status;
1713 assert(req->sense_len <= sizeof(req->sense));
1714 if (status == GOOD) {
1715 req->sense_len = 0;
1718 if (req->sense_len) {
1719 memcpy(req->dev->sense, req->sense, req->sense_len);
1720 req->dev->sense_len = req->sense_len;
1721 req->dev->sense_is_ua = (req->ops == &reqops_unit_attention);
1722 } else {
1723 req->dev->sense_len = 0;
1724 req->dev->sense_is_ua = false;
1728 * Unit attention state is now stored in the device's sense buffer
1729 * if the HBA didn't do autosense. Clear the pending unit attention
1730 * flags.
1732 scsi_clear_unit_attention(req);
1734 scsi_req_ref(req);
1735 scsi_req_dequeue(req);
1736 req->bus->info->complete(req, req->status, req->resid);
1738 /* Cancelled requests might end up being completed instead of cancelled */
1739 notifier_list_notify(&req->cancel_notifiers, req);
1740 scsi_req_unref(req);
1743 /* Called by the devices when the request is canceled. */
1744 void scsi_req_cancel_complete(SCSIRequest *req)
1746 assert(req->io_canceled);
1747 if (req->bus->info->cancel) {
1748 req->bus->info->cancel(req);
1750 notifier_list_notify(&req->cancel_notifiers, req);
1751 scsi_req_unref(req);
1754 /* Cancel @req asynchronously. @notifier is added to @req's cancellation
1755 * notifier list, the bus will be notified the requests cancellation is
1756 * completed.
1757 * */
1758 void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier)
1760 trace_scsi_req_cancel(req->dev->id, req->lun, req->tag);
1761 if (notifier) {
1762 notifier_list_add(&req->cancel_notifiers, notifier);
1764 if (req->io_canceled) {
1765 /* A blk_aio_cancel_async is pending; when it finishes,
1766 * scsi_req_cancel_complete will be called and will
1767 * call the notifier we just added. Just wait for that.
1769 assert(req->aiocb);
1770 return;
1772 /* Dropped in scsi_req_cancel_complete. */
1773 scsi_req_ref(req);
1774 scsi_req_dequeue(req);
1775 req->io_canceled = true;
1776 if (req->aiocb) {
1777 blk_aio_cancel_async(req->aiocb);
1778 } else {
1779 scsi_req_cancel_complete(req);
1783 void scsi_req_cancel(SCSIRequest *req)
1785 trace_scsi_req_cancel(req->dev->id, req->lun, req->tag);
1786 if (!req->enqueued) {
1787 return;
1789 assert(!req->io_canceled);
1790 /* Dropped in scsi_req_cancel_complete. */
1791 scsi_req_ref(req);
1792 scsi_req_dequeue(req);
1793 req->io_canceled = true;
1794 if (req->aiocb) {
1795 blk_aio_cancel(req->aiocb);
1796 } else {
1797 scsi_req_cancel_complete(req);
1801 static int scsi_ua_precedence(SCSISense sense)
1803 if (sense.key != UNIT_ATTENTION) {
1804 return INT_MAX;
1806 if (sense.asc == 0x29 && sense.ascq == 0x04) {
1807 /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */
1808 return 1;
1809 } else if (sense.asc == 0x3F && sense.ascq == 0x01) {
1810 /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */
1811 return 2;
1812 } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) {
1813 /* These two go with "all others". */
1815 } else if (sense.asc == 0x29 && sense.ascq <= 0x07) {
1816 /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0
1817 * POWER ON OCCURRED = 1
1818 * SCSI BUS RESET OCCURRED = 2
1819 * BUS DEVICE RESET FUNCTION OCCURRED = 3
1820 * I_T NEXUS LOSS OCCURRED = 7
1822 return sense.ascq;
1823 } else if (sense.asc == 0x2F && sense.ascq == 0x01) {
1824 /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */
1825 return 8;
1827 return (sense.asc << 8) | sense.ascq;
1830 void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense)
1832 int prec1, prec2;
1833 if (sense.key != UNIT_ATTENTION) {
1834 return;
1836 trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key,
1837 sense.asc, sense.ascq);
1840 * Override a pre-existing unit attention condition, except for a more
1841 * important reset condition.
1843 prec1 = scsi_ua_precedence(sdev->unit_attention);
1844 prec2 = scsi_ua_precedence(sense);
1845 if (prec2 < prec1) {
1846 sdev->unit_attention = sense;
1850 void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense)
1852 SCSIRequest *req;
1854 aio_context_acquire(blk_get_aio_context(sdev->conf.blk));
1855 while (!QTAILQ_EMPTY(&sdev->requests)) {
1856 req = QTAILQ_FIRST(&sdev->requests);
1857 scsi_req_cancel_async(req, NULL);
1859 blk_drain(sdev->conf.blk);
1860 aio_context_release(blk_get_aio_context(sdev->conf.blk));
1861 scsi_device_set_ua(sdev, sense);
1864 static char *scsibus_get_dev_path(DeviceState *dev)
1866 SCSIDevice *d = SCSI_DEVICE(dev);
1867 DeviceState *hba = dev->parent_bus->parent;
1868 char *id;
1869 char *path;
1871 id = qdev_get_dev_path(hba);
1872 if (id) {
1873 path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun);
1874 } else {
1875 path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun);
1877 g_free(id);
1878 return path;
1881 static char *scsibus_get_fw_dev_path(DeviceState *dev)
1883 SCSIDevice *d = SCSI_DEVICE(dev);
1884 return g_strdup_printf("channel@%x/%s@%x,%x", d->channel,
1885 qdev_fw_name(dev), d->id, d->lun);
1888 SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun)
1890 BusChild *kid;
1891 SCSIDevice *target_dev = NULL;
1893 QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, ChildrenHead, sibling) {
1894 DeviceState *qdev = kid->child;
1895 SCSIDevice *dev = SCSI_DEVICE(qdev);
1897 if (dev->channel == channel && dev->id == id) {
1898 if (dev->lun == lun) {
1899 return dev;
1901 target_dev = dev;
1904 return target_dev;
1907 /* SCSI request list. For simplicity, pv points to the whole device */
1909 static void put_scsi_requests(QEMUFile *f, void *pv, size_t size)
1911 SCSIDevice *s = pv;
1912 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus);
1913 SCSIRequest *req;
1915 QTAILQ_FOREACH(req, &s->requests, next) {
1916 assert(!req->io_canceled);
1917 assert(req->status == -1);
1918 assert(req->enqueued);
1920 qemu_put_sbyte(f, req->retry ? 1 : 2);
1921 qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf));
1922 qemu_put_be32s(f, &req->tag);
1923 qemu_put_be32s(f, &req->lun);
1924 if (bus->info->save_request) {
1925 bus->info->save_request(f, req);
1927 if (req->ops->save_request) {
1928 req->ops->save_request(f, req);
1931 qemu_put_sbyte(f, 0);
1934 static int get_scsi_requests(QEMUFile *f, void *pv, size_t size)
1936 SCSIDevice *s = pv;
1937 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus);
1938 int8_t sbyte;
1940 while ((sbyte = qemu_get_sbyte(f)) > 0) {
1941 uint8_t buf[SCSI_CMD_BUF_SIZE];
1942 uint32_t tag;
1943 uint32_t lun;
1944 SCSIRequest *req;
1946 qemu_get_buffer(f, buf, sizeof(buf));
1947 qemu_get_be32s(f, &tag);
1948 qemu_get_be32s(f, &lun);
1949 req = scsi_req_new(s, tag, lun, buf, NULL);
1950 req->retry = (sbyte == 1);
1951 if (bus->info->load_request) {
1952 req->hba_private = bus->info->load_request(f, req);
1954 if (req->ops->load_request) {
1955 req->ops->load_request(f, req);
1958 /* Just restart it later. */
1959 scsi_req_enqueue_internal(req);
1961 /* At this point, the request will be kept alive by the reference
1962 * added by scsi_req_enqueue_internal, so we can release our reference.
1963 * The HBA of course will add its own reference in the load_request
1964 * callback if it needs to hold on the SCSIRequest.
1966 scsi_req_unref(req);
1969 return 0;
1972 static const VMStateInfo vmstate_info_scsi_requests = {
1973 .name = "scsi-requests",
1974 .get = get_scsi_requests,
1975 .put = put_scsi_requests,
1978 static bool scsi_sense_state_needed(void *opaque)
1980 SCSIDevice *s = opaque;
1982 return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD;
1985 static const VMStateDescription vmstate_scsi_sense_state = {
1986 .name = "SCSIDevice/sense",
1987 .version_id = 1,
1988 .minimum_version_id = 1,
1989 .needed = scsi_sense_state_needed,
1990 .fields = (VMStateField[]) {
1991 VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice,
1992 SCSI_SENSE_BUF_SIZE_OLD,
1993 SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD),
1994 VMSTATE_END_OF_LIST()
1998 const VMStateDescription vmstate_scsi_device = {
1999 .name = "SCSIDevice",
2000 .version_id = 1,
2001 .minimum_version_id = 1,
2002 .fields = (VMStateField[]) {
2003 VMSTATE_UINT8(unit_attention.key, SCSIDevice),
2004 VMSTATE_UINT8(unit_attention.asc, SCSIDevice),
2005 VMSTATE_UINT8(unit_attention.ascq, SCSIDevice),
2006 VMSTATE_BOOL(sense_is_ua, SCSIDevice),
2007 VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD),
2008 VMSTATE_UINT32(sense_len, SCSIDevice),
2010 .name = "requests",
2011 .version_id = 0,
2012 .field_exists = NULL,
2013 .size = 0, /* ouch */
2014 .info = &vmstate_info_scsi_requests,
2015 .flags = VMS_SINGLE,
2016 .offset = 0,
2018 VMSTATE_END_OF_LIST()
2020 .subsections = (const VMStateDescription*[]) {
2021 &vmstate_scsi_sense_state,
2022 NULL
2026 static void scsi_device_class_init(ObjectClass *klass, void *data)
2028 DeviceClass *k = DEVICE_CLASS(klass);
2029 set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
2030 k->bus_type = TYPE_SCSI_BUS;
2031 k->realize = scsi_qdev_realize;
2032 k->unrealize = scsi_qdev_unrealize;
2033 k->props = scsi_props;
2036 static void scsi_dev_instance_init(Object *obj)
2038 DeviceState *dev = DEVICE(obj);
2039 SCSIDevice *s = SCSI_DEVICE(dev);
2041 device_add_bootindex_property(obj, &s->conf.bootindex,
2042 "bootindex", NULL,
2043 &s->qdev, NULL);
2046 static const TypeInfo scsi_device_type_info = {
2047 .name = TYPE_SCSI_DEVICE,
2048 .parent = TYPE_DEVICE,
2049 .instance_size = sizeof(SCSIDevice),
2050 .abstract = true,
2051 .class_size = sizeof(SCSIDeviceClass),
2052 .class_init = scsi_device_class_init,
2053 .instance_init = scsi_dev_instance_init,
2056 static void scsi_register_types(void)
2058 type_register_static(&scsi_bus_info);
2059 type_register_static(&scsi_device_type_info);
2062 type_init(scsi_register_types)