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1 | #include "hw.h" | |
2 | #include "qemu-error.h" | |
3 | #include "scsi.h" | |
4 | #include "scsi-defs.h" | |
5 | #include "qdev.h" | |
6 | #include "blockdev.h" | |
7 | #include "trace.h" | |
8 | #include "dma.h" | |
9 | ||
10 | static char *scsibus_get_dev_path(DeviceState *dev); | |
11 | static char *scsibus_get_fw_dev_path(DeviceState *dev); | |
12 | static int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf); | |
13 | static void scsi_req_dequeue(SCSIRequest *req); | |
14 | ||
15 | static Property scsi_props[] = { | |
16 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), | |
17 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
18 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), | |
19 | DEFINE_PROP_END_OF_LIST(), | |
20 | }; | |
21 | ||
22 | static void scsi_bus_class_init(ObjectClass *klass, void *data) | |
23 | { | |
24 | BusClass *k = BUS_CLASS(klass); | |
25 | ||
26 | k->get_dev_path = scsibus_get_dev_path; | |
27 | k->get_fw_dev_path = scsibus_get_fw_dev_path; | |
28 | } | |
29 | ||
30 | static const TypeInfo scsi_bus_info = { | |
31 | .name = TYPE_SCSI_BUS, | |
32 | .parent = TYPE_BUS, | |
33 | .instance_size = sizeof(SCSIBus), | |
34 | .class_init = scsi_bus_class_init, | |
35 | }; | |
36 | static int next_scsi_bus; | |
37 | ||
38 | static int scsi_device_init(SCSIDevice *s) | |
39 | { | |
40 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
41 | if (sc->init) { | |
42 | return sc->init(s); | |
43 | } | |
44 | return 0; | |
45 | } | |
46 | ||
47 | static void scsi_device_destroy(SCSIDevice *s) | |
48 | { | |
49 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
50 | if (sc->destroy) { | |
51 | sc->destroy(s); | |
52 | } | |
53 | } | |
54 | ||
55 | static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun, | |
56 | uint8_t *buf, void *hba_private) | |
57 | { | |
58 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
59 | if (sc->alloc_req) { | |
60 | return sc->alloc_req(s, tag, lun, buf, hba_private); | |
61 | } | |
62 | ||
63 | return NULL; | |
64 | } | |
65 | ||
66 | static void scsi_device_unit_attention_reported(SCSIDevice *s) | |
67 | { | |
68 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
69 | if (sc->unit_attention_reported) { | |
70 | sc->unit_attention_reported(s); | |
71 | } | |
72 | } | |
73 | ||
74 | /* Create a scsi bus, and attach devices to it. */ | |
75 | void scsi_bus_new(SCSIBus *bus, DeviceState *host, const SCSIBusInfo *info) | |
76 | { | |
77 | qbus_create_inplace(&bus->qbus, TYPE_SCSI_BUS, host, NULL); | |
78 | bus->busnr = next_scsi_bus++; | |
79 | bus->info = info; | |
80 | bus->qbus.allow_hotplug = 1; | |
81 | } | |
82 | ||
83 | static void scsi_dma_restart_bh(void *opaque) | |
84 | { | |
85 | SCSIDevice *s = opaque; | |
86 | SCSIRequest *req, *next; | |
87 | ||
88 | qemu_bh_delete(s->bh); | |
89 | s->bh = NULL; | |
90 | ||
91 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { | |
92 | scsi_req_ref(req); | |
93 | if (req->retry) { | |
94 | req->retry = false; | |
95 | switch (req->cmd.mode) { | |
96 | case SCSI_XFER_FROM_DEV: | |
97 | case SCSI_XFER_TO_DEV: | |
98 | scsi_req_continue(req); | |
99 | break; | |
100 | case SCSI_XFER_NONE: | |
101 | assert(!req->sg); | |
102 | scsi_req_dequeue(req); | |
103 | scsi_req_enqueue(req); | |
104 | break; | |
105 | } | |
106 | } | |
107 | scsi_req_unref(req); | |
108 | } | |
109 | } | |
110 | ||
111 | void scsi_req_retry(SCSIRequest *req) | |
112 | { | |
113 | /* No need to save a reference, because scsi_dma_restart_bh just | |
114 | * looks at the request list. */ | |
115 | req->retry = true; | |
116 | } | |
117 | ||
118 | static void scsi_dma_restart_cb(void *opaque, int running, RunState state) | |
119 | { | |
120 | SCSIDevice *s = opaque; | |
121 | ||
122 | if (!running) { | |
123 | return; | |
124 | } | |
125 | if (!s->bh) { | |
126 | s->bh = qemu_bh_new(scsi_dma_restart_bh, s); | |
127 | qemu_bh_schedule(s->bh); | |
128 | } | |
129 | } | |
130 | ||
131 | static int scsi_qdev_init(DeviceState *qdev) | |
132 | { | |
133 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
134 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
135 | SCSIDevice *d; | |
136 | int rc = -1; | |
137 | ||
138 | if (dev->channel > bus->info->max_channel) { | |
139 | error_report("bad scsi channel id: %d", dev->channel); | |
140 | goto err; | |
141 | } | |
142 | if (dev->id != -1 && dev->id > bus->info->max_target) { | |
143 | error_report("bad scsi device id: %d", dev->id); | |
144 | goto err; | |
145 | } | |
146 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { | |
147 | error_report("bad scsi device lun: %d", dev->lun); | |
148 | goto err; | |
149 | } | |
150 | ||
151 | if (dev->id == -1) { | |
152 | int id = -1; | |
153 | if (dev->lun == -1) { | |
154 | dev->lun = 0; | |
155 | } | |
156 | do { | |
157 | d = scsi_device_find(bus, dev->channel, ++id, dev->lun); | |
158 | } while (d && d->lun == dev->lun && id < bus->info->max_target); | |
159 | if (d && d->lun == dev->lun) { | |
160 | error_report("no free target"); | |
161 | goto err; | |
162 | } | |
163 | dev->id = id; | |
164 | } else if (dev->lun == -1) { | |
165 | int lun = -1; | |
166 | do { | |
167 | d = scsi_device_find(bus, dev->channel, dev->id, ++lun); | |
168 | } while (d && d->lun == lun && lun < bus->info->max_lun); | |
169 | if (d && d->lun == lun) { | |
170 | error_report("no free lun"); | |
171 | goto err; | |
172 | } | |
173 | dev->lun = lun; | |
174 | } else { | |
175 | d = scsi_device_find(bus, dev->channel, dev->id, dev->lun); | |
176 | assert(d); | |
177 | if (d->lun == dev->lun && dev != d) { | |
178 | qdev_free(&d->qdev); | |
179 | } | |
180 | } | |
181 | ||
182 | QTAILQ_INIT(&dev->requests); | |
183 | rc = scsi_device_init(dev); | |
184 | if (rc == 0) { | |
185 | dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb, | |
186 | dev); | |
187 | } | |
188 | ||
189 | err: | |
190 | return rc; | |
191 | } | |
192 | ||
193 | static int scsi_qdev_exit(DeviceState *qdev) | |
194 | { | |
195 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
196 | ||
197 | if (dev->vmsentry) { | |
198 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
199 | } | |
200 | scsi_device_destroy(dev); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | /* handle legacy '-drive if=scsi,...' cmd line args */ | |
205 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, | |
206 | int unit, bool removable, int bootindex) | |
207 | { | |
208 | const char *driver; | |
209 | DeviceState *dev; | |
210 | ||
211 | driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk"; | |
212 | dev = qdev_create(&bus->qbus, driver); | |
213 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
214 | if (bootindex >= 0) { | |
215 | qdev_prop_set_int32(dev, "bootindex", bootindex); | |
216 | } | |
217 | if (qdev_prop_exists(dev, "removable")) { | |
218 | qdev_prop_set_bit(dev, "removable", removable); | |
219 | } | |
220 | if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) { | |
221 | qdev_free(dev); | |
222 | return NULL; | |
223 | } | |
224 | if (qdev_init(dev) < 0) | |
225 | return NULL; | |
226 | return SCSI_DEVICE(dev); | |
227 | } | |
228 | ||
229 | int scsi_bus_legacy_handle_cmdline(SCSIBus *bus) | |
230 | { | |
231 | Location loc; | |
232 | DriveInfo *dinfo; | |
233 | int res = 0, unit; | |
234 | ||
235 | loc_push_none(&loc); | |
236 | for (unit = 0; unit <= bus->info->max_target; unit++) { | |
237 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); | |
238 | if (dinfo == NULL) { | |
239 | continue; | |
240 | } | |
241 | qemu_opts_loc_restore(dinfo->opts); | |
242 | if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false, -1)) { | |
243 | res = -1; | |
244 | break; | |
245 | } | |
246 | } | |
247 | loc_pop(&loc); | |
248 | return res; | |
249 | } | |
250 | ||
251 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) | |
252 | { | |
253 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
254 | scsi_req_complete(req, CHECK_CONDITION); | |
255 | return 0; | |
256 | } | |
257 | ||
258 | static const struct SCSIReqOps reqops_invalid_field = { | |
259 | .size = sizeof(SCSIRequest), | |
260 | .send_command = scsi_invalid_field | |
261 | }; | |
262 | ||
263 | /* SCSIReqOps implementation for invalid commands. */ | |
264 | ||
265 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
266 | { | |
267 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
268 | scsi_req_complete(req, CHECK_CONDITION); | |
269 | return 0; | |
270 | } | |
271 | ||
272 | static const struct SCSIReqOps reqops_invalid_opcode = { | |
273 | .size = sizeof(SCSIRequest), | |
274 | .send_command = scsi_invalid_command | |
275 | }; | |
276 | ||
277 | /* SCSIReqOps implementation for unit attention conditions. */ | |
278 | ||
279 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
280 | { | |
281 | if (req->dev && req->dev->unit_attention.key == UNIT_ATTENTION) { | |
282 | scsi_req_build_sense(req, req->dev->unit_attention); | |
283 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
284 | scsi_req_build_sense(req, req->bus->unit_attention); | |
285 | } | |
286 | scsi_req_complete(req, CHECK_CONDITION); | |
287 | return 0; | |
288 | } | |
289 | ||
290 | static const struct SCSIReqOps reqops_unit_attention = { | |
291 | .size = sizeof(SCSIRequest), | |
292 | .send_command = scsi_unit_attention | |
293 | }; | |
294 | ||
295 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to | |
296 | an invalid LUN. */ | |
297 | ||
298 | typedef struct SCSITargetReq SCSITargetReq; | |
299 | ||
300 | struct SCSITargetReq { | |
301 | SCSIRequest req; | |
302 | int len; | |
303 | uint8_t buf[2056]; | |
304 | }; | |
305 | ||
306 | static void store_lun(uint8_t *outbuf, int lun) | |
307 | { | |
308 | if (lun < 256) { | |
309 | outbuf[1] = lun; | |
310 | return; | |
311 | } | |
312 | outbuf[1] = (lun & 255); | |
313 | outbuf[0] = (lun >> 8) | 0x40; | |
314 | } | |
315 | ||
316 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
317 | { | |
318 | BusChild *kid; | |
319 | int i, len, n; | |
320 | int channel, id; | |
321 | bool found_lun0; | |
322 | ||
323 | if (r->req.cmd.xfer < 16) { | |
324 | return false; | |
325 | } | |
326 | if (r->req.cmd.buf[2] > 2) { | |
327 | return false; | |
328 | } | |
329 | channel = r->req.dev->channel; | |
330 | id = r->req.dev->id; | |
331 | found_lun0 = false; | |
332 | n = 0; | |
333 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { | |
334 | DeviceState *qdev = kid->child; | |
335 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
336 | ||
337 | if (dev->channel == channel && dev->id == id) { | |
338 | if (dev->lun == 0) { | |
339 | found_lun0 = true; | |
340 | } | |
341 | n += 8; | |
342 | } | |
343 | } | |
344 | if (!found_lun0) { | |
345 | n += 8; | |
346 | } | |
347 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
348 | if (len > sizeof(r->buf)) { | |
349 | /* TODO: > 256 LUNs? */ | |
350 | return false; | |
351 | } | |
352 | ||
353 | memset(r->buf, 0, len); | |
354 | stl_be_p(&r->buf, n); | |
355 | i = found_lun0 ? 8 : 16; | |
356 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { | |
357 | DeviceState *qdev = kid->child; | |
358 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
359 | ||
360 | if (dev->channel == channel && dev->id == id) { | |
361 | store_lun(&r->buf[i], dev->lun); | |
362 | i += 8; | |
363 | } | |
364 | } | |
365 | assert(i == n + 8); | |
366 | r->len = len; | |
367 | return true; | |
368 | } | |
369 | ||
370 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
371 | { | |
372 | assert(r->req.dev->lun != r->req.lun); | |
373 | if (r->req.cmd.buf[1] & 0x2) { | |
374 | /* Command support data - optional, not implemented */ | |
375 | return false; | |
376 | } | |
377 | ||
378 | if (r->req.cmd.buf[1] & 0x1) { | |
379 | /* Vital product data */ | |
380 | uint8_t page_code = r->req.cmd.buf[2]; | |
381 | r->buf[r->len++] = page_code ; /* this page */ | |
382 | r->buf[r->len++] = 0x00; | |
383 | ||
384 | switch (page_code) { | |
385 | case 0x00: /* Supported page codes, mandatory */ | |
386 | { | |
387 | int pages; | |
388 | pages = r->len++; | |
389 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
390 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
391 | break; | |
392 | } | |
393 | default: | |
394 | return false; | |
395 | } | |
396 | /* done with EVPD */ | |
397 | assert(r->len < sizeof(r->buf)); | |
398 | r->len = MIN(r->req.cmd.xfer, r->len); | |
399 | return true; | |
400 | } | |
401 | ||
402 | /* Standard INQUIRY data */ | |
403 | if (r->req.cmd.buf[2] != 0) { | |
404 | return false; | |
405 | } | |
406 | ||
407 | /* PAGE CODE == 0 */ | |
408 | r->len = MIN(r->req.cmd.xfer, 36); | |
409 | memset(r->buf, 0, r->len); | |
410 | if (r->req.lun != 0) { | |
411 | r->buf[0] = TYPE_NO_LUN; | |
412 | } else { | |
413 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
414 | r->buf[2] = 5; /* Version */ | |
415 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
416 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
417 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ | |
418 | memcpy(&r->buf[8], "QEMU ", 8); | |
419 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
420 | strncpy((char *) &r->buf[32], QEMU_VERSION, 4); | |
421 | } | |
422 | return true; | |
423 | } | |
424 | ||
425 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) | |
426 | { | |
427 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
428 | ||
429 | switch (buf[0]) { | |
430 | case REPORT_LUNS: | |
431 | if (!scsi_target_emulate_report_luns(r)) { | |
432 | goto illegal_request; | |
433 | } | |
434 | break; | |
435 | case INQUIRY: | |
436 | if (!scsi_target_emulate_inquiry(r)) { | |
437 | goto illegal_request; | |
438 | } | |
439 | break; | |
440 | case REQUEST_SENSE: | |
441 | r->len = scsi_device_get_sense(r->req.dev, r->buf, | |
442 | MIN(req->cmd.xfer, sizeof r->buf), | |
443 | (req->cmd.buf[1] & 1) == 0); | |
444 | if (r->req.dev->sense_is_ua) { | |
445 | scsi_device_unit_attention_reported(req->dev); | |
446 | r->req.dev->sense_len = 0; | |
447 | r->req.dev->sense_is_ua = false; | |
448 | } | |
449 | break; | |
450 | default: | |
451 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); | |
452 | scsi_req_complete(req, CHECK_CONDITION); | |
453 | return 0; | |
454 | illegal_request: | |
455 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
456 | scsi_req_complete(req, CHECK_CONDITION); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | if (!r->len) { | |
461 | scsi_req_complete(req, GOOD); | |
462 | } | |
463 | return r->len; | |
464 | } | |
465 | ||
466 | static void scsi_target_read_data(SCSIRequest *req) | |
467 | { | |
468 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
469 | uint32_t n; | |
470 | ||
471 | n = r->len; | |
472 | if (n > 0) { | |
473 | r->len = 0; | |
474 | scsi_req_data(&r->req, n); | |
475 | } else { | |
476 | scsi_req_complete(&r->req, GOOD); | |
477 | } | |
478 | } | |
479 | ||
480 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
481 | { | |
482 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
483 | ||
484 | return r->buf; | |
485 | } | |
486 | ||
487 | static const struct SCSIReqOps reqops_target_command = { | |
488 | .size = sizeof(SCSITargetReq), | |
489 | .send_command = scsi_target_send_command, | |
490 | .read_data = scsi_target_read_data, | |
491 | .get_buf = scsi_target_get_buf, | |
492 | }; | |
493 | ||
494 | ||
495 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, | |
496 | uint32_t tag, uint32_t lun, void *hba_private) | |
497 | { | |
498 | SCSIRequest *req; | |
499 | ||
500 | req = g_malloc0(reqops->size); | |
501 | req->refcount = 1; | |
502 | req->bus = scsi_bus_from_device(d); | |
503 | req->dev = d; | |
504 | req->tag = tag; | |
505 | req->lun = lun; | |
506 | req->hba_private = hba_private; | |
507 | req->status = -1; | |
508 | req->sense_len = 0; | |
509 | req->ops = reqops; | |
510 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); | |
511 | return req; | |
512 | } | |
513 | ||
514 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, | |
515 | uint8_t *buf, void *hba_private) | |
516 | { | |
517 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); | |
518 | SCSIRequest *req; | |
519 | SCSICommand cmd; | |
520 | ||
521 | if (scsi_req_parse(&cmd, d, buf) != 0) { | |
522 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); | |
523 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
524 | } else { | |
525 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], | |
526 | cmd.mode, cmd.xfer); | |
527 | if (cmd.lba != -1) { | |
528 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], | |
529 | cmd.lba); | |
530 | } | |
531 | ||
532 | if (cmd.xfer > INT32_MAX) { | |
533 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
534 | } else if ((d->unit_attention.key == UNIT_ATTENTION || | |
535 | bus->unit_attention.key == UNIT_ATTENTION) && | |
536 | (buf[0] != INQUIRY && | |
537 | buf[0] != REPORT_LUNS && | |
538 | buf[0] != GET_CONFIGURATION && | |
539 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
540 | ||
541 | /* | |
542 | * If we already have a pending unit attention condition, | |
543 | * report this one before triggering another one. | |
544 | */ | |
545 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
546 | req = scsi_req_alloc(&reqops_unit_attention, d, tag, lun, | |
547 | hba_private); | |
548 | } else if (lun != d->lun || | |
549 | buf[0] == REPORT_LUNS || | |
550 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
551 | req = scsi_req_alloc(&reqops_target_command, d, tag, lun, | |
552 | hba_private); | |
553 | } else { | |
554 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); | |
555 | } | |
556 | } | |
557 | ||
558 | req->cmd = cmd; | |
559 | req->resid = req->cmd.xfer; | |
560 | ||
561 | switch (buf[0]) { | |
562 | case INQUIRY: | |
563 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
564 | break; | |
565 | case TEST_UNIT_READY: | |
566 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
567 | break; | |
568 | case REPORT_LUNS: | |
569 | trace_scsi_report_luns(d->id, lun, tag); | |
570 | break; | |
571 | case REQUEST_SENSE: | |
572 | trace_scsi_request_sense(d->id, lun, tag); | |
573 | break; | |
574 | default: | |
575 | break; | |
576 | } | |
577 | ||
578 | return req; | |
579 | } | |
580 | ||
581 | uint8_t *scsi_req_get_buf(SCSIRequest *req) | |
582 | { | |
583 | return req->ops->get_buf(req); | |
584 | } | |
585 | ||
586 | static void scsi_clear_unit_attention(SCSIRequest *req) | |
587 | { | |
588 | SCSISense *ua; | |
589 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
590 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
591 | return; | |
592 | } | |
593 | ||
594 | /* | |
595 | * If an INQUIRY command enters the enabled command state, | |
596 | * the device server shall [not] clear any unit attention condition; | |
597 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
598 | */ | |
599 | if (req->cmd.buf[0] == INQUIRY || | |
600 | req->cmd.buf[0] == GET_CONFIGURATION || | |
601 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
602 | return; | |
603 | } | |
604 | ||
605 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
606 | ua = &req->dev->unit_attention; | |
607 | } else { | |
608 | ua = &req->bus->unit_attention; | |
609 | } | |
610 | ||
611 | /* | |
612 | * If a REPORT LUNS command enters the enabled command state, [...] | |
613 | * the device server shall clear any pending unit attention condition | |
614 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
615 | */ | |
616 | if (req->cmd.buf[0] == REPORT_LUNS && | |
617 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
618 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
619 | return; | |
620 | } | |
621 | ||
622 | *ua = SENSE_CODE(NO_SENSE); | |
623 | } | |
624 | ||
625 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) | |
626 | { | |
627 | int ret; | |
628 | ||
629 | assert(len >= 14); | |
630 | if (!req->sense_len) { | |
631 | return 0; | |
632 | } | |
633 | ||
634 | ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true); | |
635 | ||
636 | /* | |
637 | * FIXME: clearing unit attention conditions upon autosense should be done | |
638 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
639 | * (SAM-5, 5.14). | |
640 | * | |
641 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
642 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
643 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. | |
644 | */ | |
645 | if (req->dev->sense_is_ua) { | |
646 | scsi_device_unit_attention_reported(req->dev); | |
647 | req->dev->sense_len = 0; | |
648 | req->dev->sense_is_ua = false; | |
649 | } | |
650 | return ret; | |
651 | } | |
652 | ||
653 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
654 | { | |
655 | return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed); | |
656 | } | |
657 | ||
658 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
659 | { | |
660 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
661 | sense.key, sense.asc, sense.ascq); | |
662 | memset(req->sense, 0, 18); | |
663 | req->sense[0] = 0x70; | |
664 | req->sense[2] = sense.key; | |
665 | req->sense[7] = 10; | |
666 | req->sense[12] = sense.asc; | |
667 | req->sense[13] = sense.ascq; | |
668 | req->sense_len = 18; | |
669 | } | |
670 | ||
671 | static void scsi_req_enqueue_internal(SCSIRequest *req) | |
672 | { | |
673 | assert(!req->enqueued); | |
674 | scsi_req_ref(req); | |
675 | if (req->bus->info->get_sg_list) { | |
676 | req->sg = req->bus->info->get_sg_list(req); | |
677 | } else { | |
678 | req->sg = NULL; | |
679 | } | |
680 | req->enqueued = true; | |
681 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
682 | } | |
683 | ||
684 | int32_t scsi_req_enqueue(SCSIRequest *req) | |
685 | { | |
686 | int32_t rc; | |
687 | ||
688 | assert(!req->retry); | |
689 | scsi_req_enqueue_internal(req); | |
690 | scsi_req_ref(req); | |
691 | rc = req->ops->send_command(req, req->cmd.buf); | |
692 | scsi_req_unref(req); | |
693 | return rc; | |
694 | } | |
695 | ||
696 | static void scsi_req_dequeue(SCSIRequest *req) | |
697 | { | |
698 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); | |
699 | req->retry = false; | |
700 | if (req->enqueued) { | |
701 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
702 | req->enqueued = false; | |
703 | scsi_req_unref(req); | |
704 | } | |
705 | } | |
706 | ||
707 | static int scsi_get_performance_length(int num_desc, int type, int data_type) | |
708 | { | |
709 | /* MMC-6, paragraph 6.7. */ | |
710 | switch (type) { | |
711 | case 0: | |
712 | if ((data_type & 3) == 0) { | |
713 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
714 | return 16 * num_desc + 8; | |
715 | } else { | |
716 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
717 | return 6 * num_desc + 8; | |
718 | } | |
719 | case 1: | |
720 | case 4: | |
721 | case 5: | |
722 | return 8 * num_desc + 8; | |
723 | case 2: | |
724 | return 2048 * num_desc + 8; | |
725 | case 3: | |
726 | return 16 * num_desc + 8; | |
727 | default: | |
728 | return 8; | |
729 | } | |
730 | } | |
731 | ||
732 | static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) | |
733 | { | |
734 | switch (buf[0] >> 5) { | |
735 | case 0: | |
736 | cmd->xfer = buf[4]; | |
737 | cmd->len = 6; | |
738 | break; | |
739 | case 1: | |
740 | case 2: | |
741 | cmd->xfer = lduw_be_p(&buf[7]); | |
742 | cmd->len = 10; | |
743 | break; | |
744 | case 4: | |
745 | cmd->xfer = ldl_be_p(&buf[10]) & 0xffffffffULL; | |
746 | cmd->len = 16; | |
747 | break; | |
748 | case 5: | |
749 | cmd->xfer = ldl_be_p(&buf[6]) & 0xffffffffULL; | |
750 | cmd->len = 12; | |
751 | break; | |
752 | default: | |
753 | return -1; | |
754 | } | |
755 | ||
756 | switch (buf[0]) { | |
757 | case TEST_UNIT_READY: | |
758 | case REWIND: | |
759 | case START_STOP: | |
760 | case SET_CAPACITY: | |
761 | case WRITE_FILEMARKS: | |
762 | case WRITE_FILEMARKS_16: | |
763 | case SPACE: | |
764 | case RESERVE: | |
765 | case RELEASE: | |
766 | case ERASE: | |
767 | case ALLOW_MEDIUM_REMOVAL: | |
768 | case VERIFY_10: | |
769 | case SEEK_10: | |
770 | case SYNCHRONIZE_CACHE: | |
771 | case SYNCHRONIZE_CACHE_16: | |
772 | case LOCATE_16: | |
773 | case LOCK_UNLOCK_CACHE: | |
774 | case LOAD_UNLOAD: | |
775 | case SET_CD_SPEED: | |
776 | case SET_LIMITS: | |
777 | case WRITE_LONG_10: | |
778 | case MOVE_MEDIUM: | |
779 | case UPDATE_BLOCK: | |
780 | case RESERVE_TRACK: | |
781 | case SET_READ_AHEAD: | |
782 | case PRE_FETCH: | |
783 | case PRE_FETCH_16: | |
784 | case ALLOW_OVERWRITE: | |
785 | cmd->xfer = 0; | |
786 | break; | |
787 | case MODE_SENSE: | |
788 | break; | |
789 | case WRITE_SAME_10: | |
790 | case WRITE_SAME_16: | |
791 | cmd->xfer = dev->blocksize; | |
792 | break; | |
793 | case READ_CAPACITY_10: | |
794 | cmd->xfer = 8; | |
795 | break; | |
796 | case READ_BLOCK_LIMITS: | |
797 | cmd->xfer = 6; | |
798 | break; | |
799 | case SEND_VOLUME_TAG: | |
800 | /* GPCMD_SET_STREAMING from multimedia commands. */ | |
801 | if (dev->type == TYPE_ROM) { | |
802 | cmd->xfer = buf[10] | (buf[9] << 8); | |
803 | } else { | |
804 | cmd->xfer = buf[9] | (buf[8] << 8); | |
805 | } | |
806 | break; | |
807 | case WRITE_6: | |
808 | /* length 0 means 256 blocks */ | |
809 | if (cmd->xfer == 0) { | |
810 | cmd->xfer = 256; | |
811 | } | |
812 | case WRITE_10: | |
813 | case WRITE_VERIFY_10: | |
814 | case WRITE_12: | |
815 | case WRITE_VERIFY_12: | |
816 | case WRITE_16: | |
817 | case WRITE_VERIFY_16: | |
818 | cmd->xfer *= dev->blocksize; | |
819 | break; | |
820 | case READ_6: | |
821 | case READ_REVERSE: | |
822 | /* length 0 means 256 blocks */ | |
823 | if (cmd->xfer == 0) { | |
824 | cmd->xfer = 256; | |
825 | } | |
826 | case READ_10: | |
827 | case RECOVER_BUFFERED_DATA: | |
828 | case READ_12: | |
829 | case READ_16: | |
830 | cmd->xfer *= dev->blocksize; | |
831 | break; | |
832 | case FORMAT_UNIT: | |
833 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
834 | * for block devices are restricted to the header right now. */ | |
835 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
836 | cmd->xfer = 12; | |
837 | } else { | |
838 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
839 | } | |
840 | break; | |
841 | case INQUIRY: | |
842 | case RECEIVE_DIAGNOSTIC: | |
843 | case SEND_DIAGNOSTIC: | |
844 | cmd->xfer = buf[4] | (buf[3] << 8); | |
845 | break; | |
846 | case READ_CD: | |
847 | case READ_BUFFER: | |
848 | case WRITE_BUFFER: | |
849 | case SEND_CUE_SHEET: | |
850 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
851 | break; | |
852 | case PERSISTENT_RESERVE_OUT: | |
853 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
854 | break; | |
855 | case ERASE_12: | |
856 | if (dev->type == TYPE_ROM) { | |
857 | /* MMC command GET PERFORMANCE. */ | |
858 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
859 | buf[10], buf[1] & 0x1f); | |
860 | } | |
861 | break; | |
862 | case MECHANISM_STATUS: | |
863 | case READ_DVD_STRUCTURE: | |
864 | case SEND_DVD_STRUCTURE: | |
865 | case MAINTENANCE_OUT: | |
866 | case MAINTENANCE_IN: | |
867 | if (dev->type == TYPE_ROM) { | |
868 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ | |
869 | cmd->xfer = buf[9] | (buf[8] << 8); | |
870 | } | |
871 | break; | |
872 | } | |
873 | return 0; | |
874 | } | |
875 | ||
876 | static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) | |
877 | { | |
878 | switch (buf[0]) { | |
879 | /* stream commands */ | |
880 | case ERASE_12: | |
881 | case ERASE_16: | |
882 | cmd->xfer = 0; | |
883 | break; | |
884 | case READ_6: | |
885 | case READ_REVERSE: | |
886 | case RECOVER_BUFFERED_DATA: | |
887 | case WRITE_6: | |
888 | cmd->len = 6; | |
889 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); | |
890 | if (buf[1] & 0x01) { /* fixed */ | |
891 | cmd->xfer *= dev->blocksize; | |
892 | } | |
893 | break; | |
894 | case READ_16: | |
895 | case READ_REVERSE_16: | |
896 | case VERIFY_16: | |
897 | case WRITE_16: | |
898 | cmd->len = 16; | |
899 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); | |
900 | if (buf[1] & 0x01) { /* fixed */ | |
901 | cmd->xfer *= dev->blocksize; | |
902 | } | |
903 | break; | |
904 | case REWIND: | |
905 | case START_STOP: | |
906 | cmd->len = 6; | |
907 | cmd->xfer = 0; | |
908 | break; | |
909 | case SPACE_16: | |
910 | cmd->xfer = buf[13] | (buf[12] << 8); | |
911 | break; | |
912 | case READ_POSITION: | |
913 | cmd->xfer = buf[8] | (buf[7] << 8); | |
914 | break; | |
915 | case FORMAT_UNIT: | |
916 | cmd->xfer = buf[4] | (buf[3] << 8); | |
917 | break; | |
918 | /* generic commands */ | |
919 | default: | |
920 | return scsi_req_length(cmd, dev, buf); | |
921 | } | |
922 | return 0; | |
923 | } | |
924 | ||
925 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) | |
926 | { | |
927 | if (!cmd->xfer) { | |
928 | cmd->mode = SCSI_XFER_NONE; | |
929 | return; | |
930 | } | |
931 | switch (cmd->buf[0]) { | |
932 | case WRITE_6: | |
933 | case WRITE_10: | |
934 | case WRITE_VERIFY_10: | |
935 | case WRITE_12: | |
936 | case WRITE_VERIFY_12: | |
937 | case WRITE_16: | |
938 | case WRITE_VERIFY_16: | |
939 | case COPY: | |
940 | case COPY_VERIFY: | |
941 | case COMPARE: | |
942 | case CHANGE_DEFINITION: | |
943 | case LOG_SELECT: | |
944 | case MODE_SELECT: | |
945 | case MODE_SELECT_10: | |
946 | case SEND_DIAGNOSTIC: | |
947 | case WRITE_BUFFER: | |
948 | case FORMAT_UNIT: | |
949 | case REASSIGN_BLOCKS: | |
950 | case SEARCH_EQUAL: | |
951 | case SEARCH_HIGH: | |
952 | case SEARCH_LOW: | |
953 | case UPDATE_BLOCK: | |
954 | case WRITE_LONG_10: | |
955 | case WRITE_SAME_10: | |
956 | case WRITE_SAME_16: | |
957 | case UNMAP: | |
958 | case SEARCH_HIGH_12: | |
959 | case SEARCH_EQUAL_12: | |
960 | case SEARCH_LOW_12: | |
961 | case MEDIUM_SCAN: | |
962 | case SEND_VOLUME_TAG: | |
963 | case SEND_CUE_SHEET: | |
964 | case SEND_DVD_STRUCTURE: | |
965 | case PERSISTENT_RESERVE_OUT: | |
966 | case MAINTENANCE_OUT: | |
967 | case ATA_PASSTHROUGH: | |
968 | cmd->mode = SCSI_XFER_TO_DEV; | |
969 | break; | |
970 | default: | |
971 | cmd->mode = SCSI_XFER_FROM_DEV; | |
972 | break; | |
973 | } | |
974 | } | |
975 | ||
976 | static uint64_t scsi_cmd_lba(SCSICommand *cmd) | |
977 | { | |
978 | uint8_t *buf = cmd->buf; | |
979 | uint64_t lba; | |
980 | ||
981 | switch (buf[0] >> 5) { | |
982 | case 0: | |
983 | lba = ldl_be_p(&buf[0]) & 0x1fffff; | |
984 | break; | |
985 | case 1: | |
986 | case 2: | |
987 | case 5: | |
988 | lba = ldl_be_p(&buf[2]) & 0xffffffffULL; | |
989 | break; | |
990 | case 4: | |
991 | lba = ldq_be_p(&buf[2]); | |
992 | break; | |
993 | default: | |
994 | lba = -1; | |
995 | ||
996 | } | |
997 | return lba; | |
998 | } | |
999 | ||
1000 | int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) | |
1001 | { | |
1002 | int rc; | |
1003 | ||
1004 | if (dev->type == TYPE_TAPE) { | |
1005 | rc = scsi_req_stream_length(cmd, dev, buf); | |
1006 | } else { | |
1007 | rc = scsi_req_length(cmd, dev, buf); | |
1008 | } | |
1009 | if (rc != 0) | |
1010 | return rc; | |
1011 | ||
1012 | memcpy(cmd->buf, buf, cmd->len); | |
1013 | scsi_cmd_xfer_mode(cmd); | |
1014 | cmd->lba = scsi_cmd_lba(cmd); | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * Predefined sense codes | |
1020 | */ | |
1021 | ||
1022 | /* No sense data available */ | |
1023 | const struct SCSISense sense_code_NO_SENSE = { | |
1024 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 | |
1025 | }; | |
1026 | ||
1027 | /* LUN not ready, Manual intervention required */ | |
1028 | const struct SCSISense sense_code_LUN_NOT_READY = { | |
1029 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 | |
1030 | }; | |
1031 | ||
1032 | /* LUN not ready, Medium not present */ | |
1033 | const struct SCSISense sense_code_NO_MEDIUM = { | |
1034 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 | |
1035 | }; | |
1036 | ||
1037 | /* LUN not ready, medium removal prevented */ | |
1038 | const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = { | |
1039 | .key = NOT_READY, .asc = 0x53, .ascq = 0x00 | |
1040 | }; | |
1041 | ||
1042 | /* Hardware error, internal target failure */ | |
1043 | const struct SCSISense sense_code_TARGET_FAILURE = { | |
1044 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 | |
1045 | }; | |
1046 | ||
1047 | /* Illegal request, invalid command operation code */ | |
1048 | const struct SCSISense sense_code_INVALID_OPCODE = { | |
1049 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 | |
1050 | }; | |
1051 | ||
1052 | /* Illegal request, LBA out of range */ | |
1053 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { | |
1054 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 | |
1055 | }; | |
1056 | ||
1057 | /* Illegal request, Invalid field in CDB */ | |
1058 | const struct SCSISense sense_code_INVALID_FIELD = { | |
1059 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 | |
1060 | }; | |
1061 | ||
1062 | /* Illegal request, LUN not supported */ | |
1063 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { | |
1064 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 | |
1065 | }; | |
1066 | ||
1067 | /* Illegal request, Saving parameters not supported */ | |
1068 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { | |
1069 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 | |
1070 | }; | |
1071 | ||
1072 | /* Illegal request, Incompatible medium installed */ | |
1073 | const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = { | |
1074 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 | |
1075 | }; | |
1076 | ||
1077 | /* Illegal request, medium removal prevented */ | |
1078 | const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = { | |
1079 | .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x00 | |
1080 | }; | |
1081 | ||
1082 | /* Command aborted, I/O process terminated */ | |
1083 | const struct SCSISense sense_code_IO_ERROR = { | |
1084 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 | |
1085 | }; | |
1086 | ||
1087 | /* Command aborted, I_T Nexus loss occurred */ | |
1088 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { | |
1089 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 | |
1090 | }; | |
1091 | ||
1092 | /* Command aborted, Logical Unit failure */ | |
1093 | const struct SCSISense sense_code_LUN_FAILURE = { | |
1094 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 | |
1095 | }; | |
1096 | ||
1097 | /* Unit attention, Power on, reset or bus device reset occurred */ | |
1098 | const struct SCSISense sense_code_RESET = { | |
1099 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 | |
1100 | }; | |
1101 | ||
1102 | /* Unit attention, No medium */ | |
1103 | const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = { | |
1104 | .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00 | |
1105 | }; | |
1106 | ||
1107 | /* Unit attention, Medium may have changed */ | |
1108 | const struct SCSISense sense_code_MEDIUM_CHANGED = { | |
1109 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 | |
1110 | }; | |
1111 | ||
1112 | /* Unit attention, Reported LUNs data has changed */ | |
1113 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { | |
1114 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e | |
1115 | }; | |
1116 | ||
1117 | /* Unit attention, Device internal reset */ | |
1118 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { | |
1119 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 | |
1120 | }; | |
1121 | ||
1122 | /* | |
1123 | * scsi_build_sense | |
1124 | * | |
1125 | * Convert between fixed and descriptor sense buffers | |
1126 | */ | |
1127 | int scsi_build_sense(uint8_t *in_buf, int in_len, | |
1128 | uint8_t *buf, int len, bool fixed) | |
1129 | { | |
1130 | bool fixed_in; | |
1131 | SCSISense sense; | |
1132 | if (!fixed && len < 8) { | |
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | if (in_len == 0) { | |
1137 | sense.key = NO_SENSE; | |
1138 | sense.asc = 0; | |
1139 | sense.ascq = 0; | |
1140 | } else { | |
1141 | fixed_in = (in_buf[0] & 2) == 0; | |
1142 | ||
1143 | if (fixed == fixed_in) { | |
1144 | memcpy(buf, in_buf, MIN(len, in_len)); | |
1145 | return MIN(len, in_len); | |
1146 | } | |
1147 | ||
1148 | if (fixed_in) { | |
1149 | sense.key = in_buf[2]; | |
1150 | sense.asc = in_buf[12]; | |
1151 | sense.ascq = in_buf[13]; | |
1152 | } else { | |
1153 | sense.key = in_buf[1]; | |
1154 | sense.asc = in_buf[2]; | |
1155 | sense.ascq = in_buf[3]; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | memset(buf, 0, len); | |
1160 | if (fixed) { | |
1161 | /* Return fixed format sense buffer */ | |
1162 | buf[0] = 0x70; | |
1163 | buf[2] = sense.key; | |
1164 | buf[7] = 10; | |
1165 | buf[12] = sense.asc; | |
1166 | buf[13] = sense.ascq; | |
1167 | return MIN(len, 18); | |
1168 | } else { | |
1169 | /* Return descriptor format sense buffer */ | |
1170 | buf[0] = 0x72; | |
1171 | buf[1] = sense.key; | |
1172 | buf[2] = sense.asc; | |
1173 | buf[3] = sense.ascq; | |
1174 | return 8; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | static const char *scsi_command_name(uint8_t cmd) | |
1179 | { | |
1180 | static const char *names[] = { | |
1181 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", | |
1182 | [ REWIND ] = "REWIND", | |
1183 | [ REQUEST_SENSE ] = "REQUEST_SENSE", | |
1184 | [ FORMAT_UNIT ] = "FORMAT_UNIT", | |
1185 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", | |
1186 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS", | |
1187 | [ READ_6 ] = "READ_6", | |
1188 | [ WRITE_6 ] = "WRITE_6", | |
1189 | [ SET_CAPACITY ] = "SET_CAPACITY", | |
1190 | [ READ_REVERSE ] = "READ_REVERSE", | |
1191 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", | |
1192 | [ SPACE ] = "SPACE", | |
1193 | [ INQUIRY ] = "INQUIRY", | |
1194 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", | |
1195 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", | |
1196 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
1197 | [ MODE_SELECT ] = "MODE_SELECT", | |
1198 | [ RESERVE ] = "RESERVE", | |
1199 | [ RELEASE ] = "RELEASE", | |
1200 | [ COPY ] = "COPY", | |
1201 | [ ERASE ] = "ERASE", | |
1202 | [ MODE_SENSE ] = "MODE_SENSE", | |
1203 | [ START_STOP ] = "START_STOP", | |
1204 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", | |
1205 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", | |
1206 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", | |
1207 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", | |
1208 | [ READ_10 ] = "READ_10", | |
1209 | [ WRITE_10 ] = "WRITE_10", | |
1210 | [ SEEK_10 ] = "SEEK_10", | |
1211 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", | |
1212 | [ VERIFY_10 ] = "VERIFY_10", | |
1213 | [ SEARCH_HIGH ] = "SEARCH_HIGH", | |
1214 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", | |
1215 | [ SEARCH_LOW ] = "SEARCH_LOW", | |
1216 | [ SET_LIMITS ] = "SET_LIMITS", | |
1217 | [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION", | |
1218 | /* READ_POSITION and PRE_FETCH use the same operation code */ | |
1219 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", | |
1220 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", | |
1221 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA", | |
1222 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", | |
1223 | [ COMPARE ] = "COMPARE", | |
1224 | [ COPY_VERIFY ] = "COPY_VERIFY", | |
1225 | [ WRITE_BUFFER ] = "WRITE_BUFFER", | |
1226 | [ READ_BUFFER ] = "READ_BUFFER", | |
1227 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", | |
1228 | [ READ_LONG_10 ] = "READ_LONG_10", | |
1229 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", | |
1230 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", | |
1231 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", | |
1232 | [ UNMAP ] = "UNMAP", | |
1233 | [ READ_TOC ] = "READ_TOC", | |
1234 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", | |
1235 | [ SANITIZE ] = "SANITIZE", | |
1236 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", | |
1237 | [ LOG_SELECT ] = "LOG_SELECT", | |
1238 | [ LOG_SENSE ] = "LOG_SENSE", | |
1239 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", | |
1240 | [ RESERVE_10 ] = "RESERVE_10", | |
1241 | [ RELEASE_10 ] = "RELEASE_10", | |
1242 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", | |
1243 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", | |
1244 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", | |
1245 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", | |
1246 | [ EXTENDED_COPY ] = "EXTENDED_COPY", | |
1247 | [ ATA_PASSTHROUGH ] = "ATA_PASSTHROUGH", | |
1248 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", | |
1249 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", | |
1250 | [ READ_16 ] = "READ_16", | |
1251 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", | |
1252 | [ WRITE_16 ] = "WRITE_16", | |
1253 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", | |
1254 | [ VERIFY_16 ] = "VERIFY_16", | |
1255 | [ PRE_FETCH_16 ] = "PRE_FETCH_16", | |
1256 | [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16", | |
1257 | /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */ | |
1258 | [ LOCATE_16 ] = "LOCATE_16", | |
1259 | [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16", | |
1260 | /* ERASE_16 and WRITE_SAME_16 use the same operation code */ | |
1261 | [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16", | |
1262 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", | |
1263 | [ REPORT_LUNS ] = "REPORT_LUNS", | |
1264 | [ BLANK ] = "BLANK", | |
1265 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", | |
1266 | [ LOAD_UNLOAD ] = "LOAD_UNLOAD", | |
1267 | [ READ_12 ] = "READ_12", | |
1268 | [ WRITE_12 ] = "WRITE_12", | |
1269 | [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE", | |
1270 | /* ERASE_12 and GET_PERFORMANCE use the same operation code */ | |
1271 | [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12", | |
1272 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", | |
1273 | [ VERIFY_12 ] = "VERIFY_12", | |
1274 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", | |
1275 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", | |
1276 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", | |
1277 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", | |
1278 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING", | |
1279 | /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */ | |
1280 | [ READ_CD ] = "READ_CD", | |
1281 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", | |
1282 | [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE", | |
1283 | [ RESERVE_TRACK ] = "RESERVE_TRACK", | |
1284 | [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET", | |
1285 | [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE", | |
1286 | [ SET_CD_SPEED ] = "SET_CD_SPEED", | |
1287 | [ SET_READ_AHEAD ] = "SET_READ_AHEAD", | |
1288 | [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE", | |
1289 | [ MECHANISM_STATUS ] = "MECHANISM_STATUS", | |
1290 | }; | |
1291 | ||
1292 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) | |
1293 | return "*UNKNOWN*"; | |
1294 | return names[cmd]; | |
1295 | } | |
1296 | ||
1297 | SCSIRequest *scsi_req_ref(SCSIRequest *req) | |
1298 | { | |
1299 | req->refcount++; | |
1300 | return req; | |
1301 | } | |
1302 | ||
1303 | void scsi_req_unref(SCSIRequest *req) | |
1304 | { | |
1305 | assert(req->refcount > 0); | |
1306 | if (--req->refcount == 0) { | |
1307 | if (req->ops->free_req) { | |
1308 | req->ops->free_req(req); | |
1309 | } | |
1310 | g_free(req); | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | /* Tell the device that we finished processing this chunk of I/O. It | |
1315 | will start the next chunk or complete the command. */ | |
1316 | void scsi_req_continue(SCSIRequest *req) | |
1317 | { | |
1318 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); | |
1319 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
1320 | req->ops->write_data(req); | |
1321 | } else { | |
1322 | req->ops->read_data(req); | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | /* Called by the devices when data is ready for the HBA. The HBA should | |
1327 | start a DMA operation to read or fill the device's data buffer. | |
1328 | Once it completes, calling scsi_req_continue will restart I/O. */ | |
1329 | void scsi_req_data(SCSIRequest *req, int len) | |
1330 | { | |
1331 | uint8_t *buf; | |
1332 | if (req->io_canceled) { | |
1333 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
1334 | return; | |
1335 | } | |
1336 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); | |
1337 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
1338 | if (!req->sg) { | |
1339 | req->resid -= len; | |
1340 | req->bus->info->transfer_data(req, len); | |
1341 | return; | |
1342 | } | |
1343 | ||
1344 | /* If the device calls scsi_req_data and the HBA specified a | |
1345 | * scatter/gather list, the transfer has to happen in a single | |
1346 | * step. */ | |
1347 | assert(!req->dma_started); | |
1348 | req->dma_started = true; | |
1349 | ||
1350 | buf = scsi_req_get_buf(req); | |
1351 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1352 | req->resid = dma_buf_read(buf, len, req->sg); | |
1353 | } else { | |
1354 | req->resid = dma_buf_write(buf, len, req->sg); | |
1355 | } | |
1356 | scsi_req_continue(req); | |
1357 | } | |
1358 | ||
1359 | void scsi_req_print(SCSIRequest *req) | |
1360 | { | |
1361 | FILE *fp = stderr; | |
1362 | int i; | |
1363 | ||
1364 | fprintf(fp, "[%s id=%d] %s", | |
1365 | req->dev->qdev.parent_bus->name, | |
1366 | req->dev->id, | |
1367 | scsi_command_name(req->cmd.buf[0])); | |
1368 | for (i = 1; i < req->cmd.len; i++) { | |
1369 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1370 | } | |
1371 | switch (req->cmd.mode) { | |
1372 | case SCSI_XFER_NONE: | |
1373 | fprintf(fp, " - none\n"); | |
1374 | break; | |
1375 | case SCSI_XFER_FROM_DEV: | |
1376 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1377 | break; | |
1378 | case SCSI_XFER_TO_DEV: | |
1379 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1380 | break; | |
1381 | default: | |
1382 | fprintf(fp, " - Oops\n"); | |
1383 | break; | |
1384 | } | |
1385 | } | |
1386 | ||
1387 | void scsi_req_complete(SCSIRequest *req, int status) | |
1388 | { | |
1389 | assert(req->status == -1); | |
1390 | req->status = status; | |
1391 | ||
1392 | assert(req->sense_len < sizeof(req->sense)); | |
1393 | if (status == GOOD) { | |
1394 | req->sense_len = 0; | |
1395 | } | |
1396 | ||
1397 | if (req->sense_len) { | |
1398 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
1399 | req->dev->sense_len = req->sense_len; | |
1400 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1401 | } else { | |
1402 | req->dev->sense_len = 0; | |
1403 | req->dev->sense_is_ua = false; | |
1404 | } | |
1405 | ||
1406 | /* | |
1407 | * Unit attention state is now stored in the device's sense buffer | |
1408 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1409 | * flags. | |
1410 | */ | |
1411 | scsi_clear_unit_attention(req); | |
1412 | ||
1413 | scsi_req_ref(req); | |
1414 | scsi_req_dequeue(req); | |
1415 | req->bus->info->complete(req, req->status, req->resid); | |
1416 | scsi_req_unref(req); | |
1417 | } | |
1418 | ||
1419 | void scsi_req_cancel(SCSIRequest *req) | |
1420 | { | |
1421 | if (!req->enqueued) { | |
1422 | return; | |
1423 | } | |
1424 | scsi_req_ref(req); | |
1425 | scsi_req_dequeue(req); | |
1426 | req->io_canceled = true; | |
1427 | if (req->ops->cancel_io) { | |
1428 | req->ops->cancel_io(req); | |
1429 | } | |
1430 | if (req->bus->info->cancel) { | |
1431 | req->bus->info->cancel(req); | |
1432 | } | |
1433 | scsi_req_unref(req); | |
1434 | } | |
1435 | ||
1436 | void scsi_req_abort(SCSIRequest *req, int status) | |
1437 | { | |
1438 | if (!req->enqueued) { | |
1439 | return; | |
1440 | } | |
1441 | scsi_req_ref(req); | |
1442 | scsi_req_dequeue(req); | |
1443 | req->io_canceled = true; | |
1444 | if (req->ops->cancel_io) { | |
1445 | req->ops->cancel_io(req); | |
1446 | } | |
1447 | scsi_req_complete(req, status); | |
1448 | scsi_req_unref(req); | |
1449 | } | |
1450 | ||
1451 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) | |
1452 | { | |
1453 | SCSIRequest *req; | |
1454 | ||
1455 | while (!QTAILQ_EMPTY(&sdev->requests)) { | |
1456 | req = QTAILQ_FIRST(&sdev->requests); | |
1457 | scsi_req_cancel(req); | |
1458 | } | |
1459 | sdev->unit_attention = sense; | |
1460 | } | |
1461 | ||
1462 | static char *scsibus_get_dev_path(DeviceState *dev) | |
1463 | { | |
1464 | SCSIDevice *d = DO_UPCAST(SCSIDevice, qdev, dev); | |
1465 | DeviceState *hba = dev->parent_bus->parent; | |
1466 | char *id; | |
1467 | char *path; | |
1468 | ||
1469 | id = qdev_get_dev_path(hba); | |
1470 | if (id) { | |
1471 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); | |
1472 | } else { | |
1473 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); | |
1474 | } | |
1475 | g_free(id); | |
1476 | return path; | |
1477 | } | |
1478 | ||
1479 | static char *scsibus_get_fw_dev_path(DeviceState *dev) | |
1480 | { | |
1481 | SCSIDevice *d = SCSI_DEVICE(dev); | |
1482 | char path[100]; | |
1483 | ||
1484 | snprintf(path, sizeof(path), "channel@%x/%s@%x,%x", d->channel, | |
1485 | qdev_fw_name(dev), d->id, d->lun); | |
1486 | ||
1487 | return strdup(path); | |
1488 | } | |
1489 | ||
1490 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) | |
1491 | { | |
1492 | BusChild *kid; | |
1493 | SCSIDevice *target_dev = NULL; | |
1494 | ||
1495 | QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, ChildrenHead, sibling) { | |
1496 | DeviceState *qdev = kid->child; | |
1497 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
1498 | ||
1499 | if (dev->channel == channel && dev->id == id) { | |
1500 | if (dev->lun == lun) { | |
1501 | return dev; | |
1502 | } | |
1503 | target_dev = dev; | |
1504 | } | |
1505 | } | |
1506 | return target_dev; | |
1507 | } | |
1508 | ||
1509 | /* SCSI request list. For simplicity, pv points to the whole device */ | |
1510 | ||
1511 | static void put_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1512 | { | |
1513 | SCSIDevice *s = pv; | |
1514 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1515 | SCSIRequest *req; | |
1516 | ||
1517 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1518 | assert(!req->io_canceled); | |
1519 | assert(req->status == -1); | |
1520 | assert(req->enqueued); | |
1521 | ||
1522 | qemu_put_sbyte(f, req->retry ? 1 : 2); | |
1523 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); | |
1524 | qemu_put_be32s(f, &req->tag); | |
1525 | qemu_put_be32s(f, &req->lun); | |
1526 | if (bus->info->save_request) { | |
1527 | bus->info->save_request(f, req); | |
1528 | } | |
1529 | if (req->ops->save_request) { | |
1530 | req->ops->save_request(f, req); | |
1531 | } | |
1532 | } | |
1533 | qemu_put_sbyte(f, 0); | |
1534 | } | |
1535 | ||
1536 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1537 | { | |
1538 | SCSIDevice *s = pv; | |
1539 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1540 | int8_t sbyte; | |
1541 | ||
1542 | while ((sbyte = qemu_get_sbyte(f)) > 0) { | |
1543 | uint8_t buf[SCSI_CMD_BUF_SIZE]; | |
1544 | uint32_t tag; | |
1545 | uint32_t lun; | |
1546 | SCSIRequest *req; | |
1547 | ||
1548 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1549 | qemu_get_be32s(f, &tag); | |
1550 | qemu_get_be32s(f, &lun); | |
1551 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
1552 | req->retry = (sbyte == 1); | |
1553 | if (bus->info->load_request) { | |
1554 | req->hba_private = bus->info->load_request(f, req); | |
1555 | } | |
1556 | if (req->ops->load_request) { | |
1557 | req->ops->load_request(f, req); | |
1558 | } | |
1559 | ||
1560 | /* Just restart it later. */ | |
1561 | scsi_req_enqueue_internal(req); | |
1562 | ||
1563 | /* At this point, the request will be kept alive by the reference | |
1564 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1565 | * The HBA of course will add its own reference in the load_request | |
1566 | * callback if it needs to hold on the SCSIRequest. | |
1567 | */ | |
1568 | scsi_req_unref(req); | |
1569 | } | |
1570 | ||
1571 | return 0; | |
1572 | } | |
1573 | ||
1574 | static const VMStateInfo vmstate_info_scsi_requests = { | |
1575 | .name = "scsi-requests", | |
1576 | .get = get_scsi_requests, | |
1577 | .put = put_scsi_requests, | |
1578 | }; | |
1579 | ||
1580 | const VMStateDescription vmstate_scsi_device = { | |
1581 | .name = "SCSIDevice", | |
1582 | .version_id = 1, | |
1583 | .minimum_version_id = 1, | |
1584 | .minimum_version_id_old = 1, | |
1585 | .fields = (VMStateField[]) { | |
1586 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1587 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1588 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1589 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
1590 | VMSTATE_UINT8_ARRAY(sense, SCSIDevice, SCSI_SENSE_BUF_SIZE), | |
1591 | VMSTATE_UINT32(sense_len, SCSIDevice), | |
1592 | { | |
1593 | .name = "requests", | |
1594 | .version_id = 0, | |
1595 | .field_exists = NULL, | |
1596 | .size = 0, /* ouch */ | |
1597 | .info = &vmstate_info_scsi_requests, | |
1598 | .flags = VMS_SINGLE, | |
1599 | .offset = 0, | |
1600 | }, | |
1601 | VMSTATE_END_OF_LIST() | |
1602 | } | |
1603 | }; | |
1604 | ||
1605 | static void scsi_device_class_init(ObjectClass *klass, void *data) | |
1606 | { | |
1607 | DeviceClass *k = DEVICE_CLASS(klass); | |
1608 | k->bus_type = TYPE_SCSI_BUS; | |
1609 | k->init = scsi_qdev_init; | |
1610 | k->unplug = qdev_simple_unplug_cb; | |
1611 | k->exit = scsi_qdev_exit; | |
1612 | k->props = scsi_props; | |
1613 | } | |
1614 | ||
1615 | static TypeInfo scsi_device_type_info = { | |
1616 | .name = TYPE_SCSI_DEVICE, | |
1617 | .parent = TYPE_DEVICE, | |
1618 | .instance_size = sizeof(SCSIDevice), | |
1619 | .abstract = true, | |
1620 | .class_size = sizeof(SCSIDeviceClass), | |
1621 | .class_init = scsi_device_class_init, | |
1622 | }; | |
1623 | ||
1624 | static void scsi_register_types(void) | |
1625 | { | |
1626 | type_register_static(&scsi_bus_info); | |
1627 | type_register_static(&scsi_device_type_info); | |
1628 | } | |
1629 | ||
1630 | type_init(scsi_register_types) |