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Commit | Line | Data |
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d52affa7 | 1 | #include "hw.h" |
2f792016 | 2 | #include "qemu-error.h" |
43b443b6 | 3 | #include "scsi.h" |
2ec749cb | 4 | #include "scsi-defs.h" |
d52affa7 | 5 | #include "qdev.h" |
2446333c | 6 | #include "blockdev.h" |
5138efec | 7 | #include "trace.h" |
d52affa7 | 8 | |
db07c0f8 | 9 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
afa46c46 | 10 | static int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf); |
b45ef674 PB |
11 | static int scsi_build_sense(uint8_t *in_buf, int in_len, |
12 | uint8_t *buf, int len, bool fixed); | |
db07c0f8 | 13 | |
d52affa7 GH |
14 | static struct BusInfo scsi_bus_info = { |
15 | .name = "SCSI", | |
16 | .size = sizeof(SCSIBus), | |
db07c0f8 | 17 | .get_fw_dev_path = scsibus_get_fw_dev_path, |
d52affa7 GH |
18 | .props = (Property[]) { |
19 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
87dcd1b2 | 20 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, 0), |
d52affa7 GH |
21 | DEFINE_PROP_END_OF_LIST(), |
22 | }, | |
23 | }; | |
24 | static int next_scsi_bus; | |
25 | ||
26 | /* Create a scsi bus, and attach devices to it. */ | |
ca9c39fa | 27 | void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev, |
cfdc1bb0 | 28 | const SCSIBusOps *ops) |
d52affa7 | 29 | { |
ca9c39fa | 30 | qbus_create_inplace(&bus->qbus, &scsi_bus_info, host, NULL); |
d52affa7 GH |
31 | bus->busnr = next_scsi_bus++; |
32 | bus->tcq = tcq; | |
33 | bus->ndev = ndev; | |
cfdc1bb0 | 34 | bus->ops = ops; |
cb23117b | 35 | bus->qbus.allow_hotplug = 1; |
d52affa7 GH |
36 | } |
37 | ||
38 | static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base) | |
39 | { | |
40 | SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); | |
41 | SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base); | |
42 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
01985dcf | 43 | int rc = -1; |
d52affa7 GH |
44 | |
45 | if (dev->id == -1) { | |
46 | for (dev->id = 0; dev->id < bus->ndev; dev->id++) { | |
47 | if (bus->devs[dev->id] == NULL) | |
48 | break; | |
49 | } | |
50 | } | |
51 | if (dev->id >= bus->ndev) { | |
1ecda02b | 52 | error_report("bad scsi device id: %d", dev->id); |
d52affa7 GH |
53 | goto err; |
54 | } | |
55 | ||
56 | if (bus->devs[dev->id]) { | |
01985dcf | 57 | qdev_free(&bus->devs[dev->id]->qdev); |
d52affa7 GH |
58 | } |
59 | bus->devs[dev->id] = dev; | |
60 | ||
61 | dev->info = info; | |
9af99d98 | 62 | QTAILQ_INIT(&dev->requests); |
01985dcf GH |
63 | rc = dev->info->init(dev); |
64 | if (rc != 0) { | |
65 | bus->devs[dev->id] = NULL; | |
66 | } | |
d52affa7 GH |
67 | |
68 | err: | |
01985dcf GH |
69 | return rc; |
70 | } | |
71 | ||
72 | static int scsi_qdev_exit(DeviceState *qdev) | |
73 | { | |
74 | SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); | |
75 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
76 | ||
77 | assert(bus->devs[dev->id] != NULL); | |
78 | if (bus->devs[dev->id]->info->destroy) { | |
79 | bus->devs[dev->id]->info->destroy(bus->devs[dev->id]); | |
80 | } | |
81 | bus->devs[dev->id] = NULL; | |
82 | return 0; | |
d52affa7 GH |
83 | } |
84 | ||
85 | void scsi_qdev_register(SCSIDeviceInfo *info) | |
86 | { | |
87 | info->qdev.bus_info = &scsi_bus_info; | |
88 | info->qdev.init = scsi_qdev_init; | |
cb23117b | 89 | info->qdev.unplug = qdev_simple_unplug_cb; |
01985dcf | 90 | info->qdev.exit = scsi_qdev_exit; |
d52affa7 GH |
91 | qdev_register(&info->qdev); |
92 | } | |
93 | ||
94 | /* handle legacy '-drive if=scsi,...' cmd line args */ | |
2d1fd261 SH |
95 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, |
96 | int unit, bool removable) | |
d52affa7 GH |
97 | { |
98 | const char *driver; | |
99 | DeviceState *dev; | |
100 | ||
f8b6cc00 | 101 | driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk"; |
d52affa7 GH |
102 | dev = qdev_create(&bus->qbus, driver); |
103 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
2d1fd261 SH |
104 | if (qdev_prop_exists(dev, "removable")) { |
105 | qdev_prop_set_bit(dev, "removable", removable); | |
106 | } | |
18846dee MA |
107 | if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) { |
108 | qdev_free(dev); | |
109 | return NULL; | |
110 | } | |
33e66b86 MA |
111 | if (qdev_init(dev) < 0) |
112 | return NULL; | |
d52affa7 GH |
113 | return DO_UPCAST(SCSIDevice, qdev, dev); |
114 | } | |
115 | ||
fa66b909 | 116 | int scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 117 | { |
42e766a2 | 118 | Location loc; |
d52affa7 | 119 | DriveInfo *dinfo; |
fa66b909 | 120 | int res = 0, unit; |
d52affa7 | 121 | |
42e766a2 | 122 | loc_push_none(&loc); |
622b520f | 123 | for (unit = 0; unit < bus->ndev; unit++) { |
d52affa7 GH |
124 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
125 | if (dinfo == NULL) { | |
126 | continue; | |
127 | } | |
42e766a2 | 128 | qemu_opts_loc_restore(dinfo->opts); |
2d1fd261 | 129 | if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false)) { |
fa66b909 MA |
130 | res = -1; |
131 | break; | |
132 | } | |
d52affa7 | 133 | } |
42e766a2 | 134 | loc_pop(&loc); |
fa66b909 | 135 | return res; |
d52affa7 | 136 | } |
89b08ae1 | 137 | |
afa46c46 PB |
138 | /* SCSIReqOps implementation for invalid commands. */ |
139 | ||
140 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
141 | { | |
142 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
143 | scsi_req_complete(req, CHECK_CONDITION); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | struct SCSIReqOps reqops_invalid_opcode = { | |
148 | .size = sizeof(SCSIRequest), | |
149 | .send_command = scsi_invalid_command | |
150 | }; | |
151 | ||
6dc06f08 PB |
152 | /* SCSIReqOps implementation for unit attention conditions. */ |
153 | ||
154 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
155 | { | |
156 | if (req->dev && req->dev->unit_attention.key == UNIT_ATTENTION) { | |
157 | scsi_req_build_sense(req, req->dev->unit_attention); | |
158 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
159 | scsi_req_build_sense(req, req->bus->unit_attention); | |
160 | } | |
161 | scsi_req_complete(req, CHECK_CONDITION); | |
162 | return 0; | |
163 | } | |
164 | ||
165 | struct SCSIReqOps reqops_unit_attention = { | |
166 | .size = sizeof(SCSIRequest), | |
167 | .send_command = scsi_unit_attention | |
168 | }; | |
169 | ||
fdaef069 PB |
170 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
171 | an invalid LUN. */ | |
172 | ||
173 | typedef struct SCSITargetReq SCSITargetReq; | |
174 | ||
175 | struct SCSITargetReq { | |
176 | SCSIRequest req; | |
177 | int len; | |
178 | uint8_t buf[64]; | |
179 | }; | |
180 | ||
181 | static void store_lun(uint8_t *outbuf, int lun) | |
182 | { | |
183 | if (lun < 256) { | |
184 | outbuf[1] = lun; | |
185 | return; | |
186 | } | |
187 | outbuf[1] = (lun & 255); | |
188 | outbuf[0] = (lun >> 8) | 0x40; | |
189 | } | |
190 | ||
191 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
192 | { | |
193 | int len; | |
194 | if (r->req.cmd.xfer < 16) { | |
195 | return false; | |
196 | } | |
197 | if (r->req.cmd.buf[2] > 2) { | |
198 | return false; | |
199 | } | |
200 | len = MIN(sizeof r->buf, r->req.cmd.xfer); | |
201 | memset(r->buf, 0, len); | |
202 | if (r->req.dev->lun != 0) { | |
203 | r->buf[3] = 16; | |
204 | r->len = 24; | |
205 | store_lun(&r->buf[16], r->req.dev->lun); | |
206 | } else { | |
207 | r->buf[3] = 8; | |
208 | r->len = 16; | |
209 | } | |
210 | return true; | |
211 | } | |
212 | ||
213 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
214 | { | |
215 | assert(r->req.dev->lun != r->req.lun); | |
216 | if (r->req.cmd.buf[1] & 0x2) { | |
217 | /* Command support data - optional, not implemented */ | |
218 | return false; | |
219 | } | |
220 | ||
221 | if (r->req.cmd.buf[1] & 0x1) { | |
222 | /* Vital product data */ | |
223 | uint8_t page_code = r->req.cmd.buf[2]; | |
224 | if (r->req.cmd.xfer < 4) { | |
225 | return false; | |
226 | } | |
227 | ||
228 | r->buf[r->len++] = page_code ; /* this page */ | |
229 | r->buf[r->len++] = 0x00; | |
230 | ||
231 | switch (page_code) { | |
232 | case 0x00: /* Supported page codes, mandatory */ | |
233 | { | |
234 | int pages; | |
235 | pages = r->len++; | |
236 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
237 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
238 | break; | |
239 | } | |
240 | default: | |
241 | return false; | |
242 | } | |
243 | /* done with EVPD */ | |
244 | assert(r->len < sizeof(r->buf)); | |
245 | r->len = MIN(r->req.cmd.xfer, r->len); | |
246 | return true; | |
247 | } | |
248 | ||
249 | /* Standard INQUIRY data */ | |
250 | if (r->req.cmd.buf[2] != 0) { | |
251 | return false; | |
252 | } | |
253 | ||
254 | /* PAGE CODE == 0 */ | |
255 | if (r->req.cmd.xfer < 5) { | |
256 | return -1; | |
257 | } | |
258 | ||
259 | r->len = MIN(r->req.cmd.xfer, 36); | |
260 | memset(r->buf, 0, r->len); | |
261 | if (r->req.lun != 0) { | |
262 | r->buf[0] = TYPE_NO_LUN; | |
263 | } else { | |
264 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
265 | r->buf[2] = 5; /* Version */ | |
266 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
267 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
268 | r->buf[7] = 0x10 | (r->req.bus->tcq ? 0x02 : 0); /* Sync, TCQ. */ | |
269 | memcpy(&r->buf[8], "QEMU ", 8); | |
270 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
271 | strncpy((char *) &r->buf[32], QEMU_VERSION, 4); | |
272 | } | |
273 | return true; | |
274 | } | |
275 | ||
276 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) | |
277 | { | |
278 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
279 | ||
280 | switch (buf[0]) { | |
281 | case REPORT_LUNS: | |
282 | if (!scsi_target_emulate_report_luns(r)) { | |
283 | goto illegal_request; | |
284 | } | |
285 | break; | |
286 | case INQUIRY: | |
287 | if (!scsi_target_emulate_inquiry(r)) { | |
288 | goto illegal_request; | |
289 | } | |
290 | break; | |
739df215 PB |
291 | case REQUEST_SENSE: |
292 | if (req->cmd.xfer < 4) { | |
293 | goto illegal_request; | |
294 | } | |
295 | r->len = scsi_device_get_sense(r->req.dev, r->buf, req->cmd.xfer, | |
296 | (req->cmd.buf[1] & 1) == 0); | |
297 | break; | |
fdaef069 PB |
298 | default: |
299 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); | |
300 | scsi_req_complete(req, CHECK_CONDITION); | |
301 | return 0; | |
302 | illegal_request: | |
303 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
304 | scsi_req_complete(req, CHECK_CONDITION); | |
305 | return 0; | |
306 | } | |
307 | ||
308 | if (!r->len) { | |
309 | scsi_req_complete(req, GOOD); | |
310 | } | |
311 | return r->len; | |
312 | } | |
313 | ||
314 | static void scsi_target_read_data(SCSIRequest *req) | |
315 | { | |
316 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
317 | uint32_t n; | |
318 | ||
319 | n = r->len; | |
320 | if (n > 0) { | |
321 | r->len = 0; | |
322 | scsi_req_data(&r->req, n); | |
323 | } else { | |
324 | scsi_req_complete(&r->req, GOOD); | |
325 | } | |
326 | } | |
327 | ||
328 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
329 | { | |
330 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
331 | ||
332 | return r->buf; | |
333 | } | |
334 | ||
335 | struct SCSIReqOps reqops_target_command = { | |
336 | .size = sizeof(SCSITargetReq), | |
337 | .send_command = scsi_target_send_command, | |
338 | .read_data = scsi_target_read_data, | |
339 | .get_buf = scsi_target_get_buf, | |
340 | }; | |
341 | ||
342 | ||
8dbd4574 | 343 | SCSIRequest *scsi_req_alloc(SCSIReqOps *reqops, SCSIDevice *d, uint32_t tag, |
c5bf71a9 | 344 | uint32_t lun, void *hba_private) |
89b08ae1 GH |
345 | { |
346 | SCSIRequest *req; | |
347 | ||
8dbd4574 | 348 | req = qemu_mallocz(reqops->size); |
5c6c0e51 | 349 | req->refcount = 1; |
89b08ae1 GH |
350 | req->bus = scsi_bus_from_device(d); |
351 | req->dev = d; | |
352 | req->tag = tag; | |
353 | req->lun = lun; | |
c5bf71a9 | 354 | req->hba_private = hba_private; |
ed3a34a3 | 355 | req->status = -1; |
b45ef674 | 356 | req->sense_len = 0; |
8dbd4574 | 357 | req->ops = reqops; |
5138efec | 358 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
359 | return req; |
360 | } | |
361 | ||
c5bf71a9 | 362 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 363 | uint8_t *buf, void *hba_private) |
43a2b339 | 364 | { |
6dc06f08 | 365 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
c39ce112 | 366 | SCSIRequest *req; |
afa46c46 PB |
367 | SCSICommand cmd; |
368 | ||
369 | if (scsi_req_parse(&cmd, d, buf) != 0) { | |
370 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); | |
371 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
372 | } else { | |
373 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], | |
374 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 375 | if (cmd.lba != -1) { |
afa46c46 PB |
376 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
377 | cmd.lba); | |
378 | } | |
fdaef069 | 379 | |
6dc06f08 PB |
380 | if ((d->unit_attention.key == UNIT_ATTENTION || |
381 | bus->unit_attention.key == UNIT_ATTENTION) && | |
382 | (buf[0] != INQUIRY && | |
383 | buf[0] != REPORT_LUNS && | |
384 | buf[0] != GET_CONFIGURATION && | |
385 | buf[0] != GET_EVENT_STATUS_NOTIFICATION)) { | |
386 | req = scsi_req_alloc(&reqops_unit_attention, d, tag, lun, | |
387 | hba_private); | |
388 | } else if (lun != d->lun || | |
739df215 PB |
389 | buf[0] == REPORT_LUNS || |
390 | buf[0] == REQUEST_SENSE) { | |
fdaef069 PB |
391 | req = scsi_req_alloc(&reqops_target_command, d, tag, lun, |
392 | hba_private); | |
393 | } else { | |
394 | req = d->info->alloc_req(d, tag, lun, hba_private); | |
395 | } | |
afa46c46 PB |
396 | } |
397 | ||
398 | req->cmd = cmd; | |
98254542 PB |
399 | switch (buf[0]) { |
400 | case INQUIRY: | |
401 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
402 | break; | |
403 | case TEST_UNIT_READY: | |
404 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
405 | break; | |
406 | case REPORT_LUNS: | |
407 | trace_scsi_report_luns(d->id, lun, tag); | |
408 | break; | |
409 | case REQUEST_SENSE: | |
410 | trace_scsi_request_sense(d->id, lun, tag); | |
411 | break; | |
412 | default: | |
413 | break; | |
414 | } | |
415 | ||
c39ce112 | 416 | return req; |
43a2b339 PB |
417 | } |
418 | ||
0c34459b PB |
419 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
420 | { | |
12010e7b | 421 | return req->ops->get_buf(req); |
0c34459b PB |
422 | } |
423 | ||
6dc06f08 PB |
424 | static void scsi_clear_unit_attention(SCSIRequest *req) |
425 | { | |
426 | SCSISense *ua; | |
427 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
428 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
429 | return; | |
430 | } | |
431 | ||
432 | /* | |
433 | * If an INQUIRY command enters the enabled command state, | |
434 | * the device server shall [not] clear any unit attention condition; | |
435 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
436 | */ | |
437 | if (req->cmd.buf[0] == INQUIRY || | |
438 | req->cmd.buf[0] == GET_CONFIGURATION || | |
439 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
440 | return; | |
441 | } | |
442 | ||
443 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
444 | ua = &req->dev->unit_attention; | |
445 | } else { | |
446 | ua = &req->bus->unit_attention; | |
447 | } | |
448 | ||
449 | /* | |
450 | * If a REPORT LUNS command enters the enabled command state, [...] | |
451 | * the device server shall clear any pending unit attention condition | |
452 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
453 | */ | |
454 | if (req->cmd.buf[0] == REPORT_LUNS && | |
455 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
456 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
457 | return; | |
458 | } | |
459 | ||
460 | *ua = SENSE_CODE(NO_SENSE); | |
461 | } | |
462 | ||
74382217 HR |
463 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
464 | { | |
6dc06f08 PB |
465 | int ret; |
466 | ||
b45ef674 PB |
467 | assert(len >= 14); |
468 | if (!req->sense_len) { | |
74382217 HR |
469 | return 0; |
470 | } | |
6dc06f08 PB |
471 | |
472 | ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true); | |
473 | ||
474 | /* | |
475 | * FIXME: clearing unit attention conditions upon autosense should be done | |
476 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
477 | * (SAM-5, 5.14). | |
478 | * | |
479 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
480 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
481 | * In the latter case, scsi_req_complete clears unit attention conditions | |
482 | * after moving them to the device's sense buffer. | |
483 | */ | |
484 | scsi_clear_unit_attention(req); | |
485 | return ret; | |
b45ef674 PB |
486 | } |
487 | ||
488 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
489 | { | |
490 | return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed); | |
491 | } | |
492 | ||
493 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
494 | { | |
495 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
496 | sense.key, sense.asc, sense.ascq); | |
497 | memset(req->sense, 0, 18); | |
498 | req->sense[0] = 0xf0; | |
499 | req->sense[2] = sense.key; | |
500 | req->sense[12] = sense.asc; | |
501 | req->sense[13] = sense.ascq; | |
502 | req->sense_len = 18; | |
74382217 HR |
503 | } |
504 | ||
c39ce112 | 505 | int32_t scsi_req_enqueue(SCSIRequest *req) |
89b08ae1 | 506 | { |
fc4f0754 PB |
507 | int32_t rc; |
508 | ||
5c6c0e51 HR |
509 | assert(!req->enqueued); |
510 | scsi_req_ref(req); | |
511 | req->enqueued = true; | |
512 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
fc4f0754 PB |
513 | |
514 | scsi_req_ref(req); | |
c39ce112 | 515 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
516 | scsi_req_unref(req); |
517 | return rc; | |
89b08ae1 GH |
518 | } |
519 | ||
a1f0cce2 | 520 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 521 | { |
5138efec | 522 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
e8637c90 JK |
523 | if (req->enqueued) { |
524 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
525 | req->enqueued = false; | |
ad2d30f7 | 526 | scsi_req_unref(req); |
e8637c90 JK |
527 | } |
528 | } | |
529 | ||
2599aece | 530 | static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 531 | { |
2599aece | 532 | switch (buf[0] >> 5) { |
2ec749cb | 533 | case 0: |
2599aece PB |
534 | cmd->xfer = buf[4]; |
535 | cmd->len = 6; | |
2ec749cb | 536 | /* length 0 means 256 blocks */ |
2599aece PB |
537 | if (cmd->xfer == 0) { |
538 | cmd->xfer = 256; | |
539 | } | |
2ec749cb GH |
540 | break; |
541 | case 1: | |
542 | case 2: | |
2599aece PB |
543 | cmd->xfer = buf[8] | (buf[7] << 8); |
544 | cmd->len = 10; | |
2ec749cb GH |
545 | break; |
546 | case 4: | |
2599aece PB |
547 | cmd->xfer = buf[13] | (buf[12] << 8) | (buf[11] << 16) | (buf[10] << 24); |
548 | cmd->len = 16; | |
2ec749cb GH |
549 | break; |
550 | case 5: | |
2599aece PB |
551 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24); |
552 | cmd->len = 12; | |
2ec749cb GH |
553 | break; |
554 | default: | |
555 | return -1; | |
556 | } | |
557 | ||
2599aece | 558 | switch (buf[0]) { |
2ec749cb | 559 | case TEST_UNIT_READY: |
5e30a07d | 560 | case REWIND: |
2ec749cb GH |
561 | case START_STOP: |
562 | case SEEK_6: | |
563 | case WRITE_FILEMARKS: | |
564 | case SPACE: | |
a5e3d9ef BK |
565 | case RESERVE: |
566 | case RELEASE: | |
2ec749cb GH |
567 | case ERASE: |
568 | case ALLOW_MEDIUM_REMOVAL: | |
5e30a07d | 569 | case VERIFY_10: |
2ec749cb GH |
570 | case SEEK_10: |
571 | case SYNCHRONIZE_CACHE: | |
572 | case LOCK_UNLOCK_CACHE: | |
573 | case LOAD_UNLOAD: | |
574 | case SET_CD_SPEED: | |
575 | case SET_LIMITS: | |
5e30a07d | 576 | case WRITE_LONG_10: |
2ec749cb GH |
577 | case MOVE_MEDIUM: |
578 | case UPDATE_BLOCK: | |
2599aece | 579 | cmd->xfer = 0; |
2ec749cb GH |
580 | break; |
581 | case MODE_SENSE: | |
582 | break; | |
5e30a07d | 583 | case WRITE_SAME_10: |
2599aece | 584 | cmd->xfer = 1; |
2ec749cb | 585 | break; |
5e30a07d | 586 | case READ_CAPACITY_10: |
2599aece | 587 | cmd->xfer = 8; |
2ec749cb GH |
588 | break; |
589 | case READ_BLOCK_LIMITS: | |
2599aece | 590 | cmd->xfer = 6; |
2ec749cb GH |
591 | break; |
592 | case READ_POSITION: | |
2599aece | 593 | cmd->xfer = 20; |
2ec749cb GH |
594 | break; |
595 | case SEND_VOLUME_TAG: | |
2599aece | 596 | cmd->xfer *= 40; |
2ec749cb GH |
597 | break; |
598 | case MEDIUM_SCAN: | |
2599aece | 599 | cmd->xfer *= 8; |
2ec749cb GH |
600 | break; |
601 | case WRITE_10: | |
5e30a07d | 602 | case WRITE_VERIFY_10: |
2ec749cb GH |
603 | case WRITE_6: |
604 | case WRITE_12: | |
605 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
606 | case WRITE_16: |
607 | case WRITE_VERIFY_16: | |
2599aece | 608 | cmd->xfer *= dev->blocksize; |
2ec749cb GH |
609 | break; |
610 | case READ_10: | |
611 | case READ_6: | |
612 | case READ_REVERSE: | |
613 | case RECOVER_BUFFERED_DATA: | |
614 | case READ_12: | |
bd536cf3 | 615 | case READ_16: |
2599aece | 616 | cmd->xfer *= dev->blocksize; |
2ec749cb GH |
617 | break; |
618 | case INQUIRY: | |
2599aece | 619 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 620 | break; |
c7126d5b NB |
621 | case MAINTENANCE_OUT: |
622 | case MAINTENANCE_IN: | |
2599aece | 623 | if (dev->type == TYPE_ROM) { |
c7126d5b | 624 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 625 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
626 | } |
627 | break; | |
2ec749cb GH |
628 | } |
629 | return 0; | |
630 | } | |
631 | ||
2599aece | 632 | static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 633 | { |
2599aece | 634 | switch (buf[0]) { |
2ec749cb GH |
635 | /* stream commands */ |
636 | case READ_6: | |
637 | case READ_REVERSE: | |
638 | case RECOVER_BUFFERED_DATA: | |
639 | case WRITE_6: | |
2599aece PB |
640 | cmd->len = 6; |
641 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); | |
642 | if (buf[1] & 0x01) { /* fixed */ | |
643 | cmd->xfer *= dev->blocksize; | |
644 | } | |
2ec749cb GH |
645 | break; |
646 | case REWIND: | |
647 | case START_STOP: | |
2599aece PB |
648 | cmd->len = 6; |
649 | cmd->xfer = 0; | |
2ec749cb GH |
650 | break; |
651 | /* generic commands */ | |
652 | default: | |
2599aece | 653 | return scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
654 | } |
655 | return 0; | |
656 | } | |
657 | ||
2599aece | 658 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 659 | { |
2599aece | 660 | switch (cmd->buf[0]) { |
97a06435 GH |
661 | case WRITE_6: |
662 | case WRITE_10: | |
5e30a07d | 663 | case WRITE_VERIFY_10: |
97a06435 GH |
664 | case WRITE_12: |
665 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
666 | case WRITE_16: |
667 | case WRITE_VERIFY_16: | |
97a06435 GH |
668 | case COPY: |
669 | case COPY_VERIFY: | |
670 | case COMPARE: | |
671 | case CHANGE_DEFINITION: | |
672 | case LOG_SELECT: | |
673 | case MODE_SELECT: | |
674 | case MODE_SELECT_10: | |
675 | case SEND_DIAGNOSTIC: | |
676 | case WRITE_BUFFER: | |
677 | case FORMAT_UNIT: | |
678 | case REASSIGN_BLOCKS: | |
97a06435 GH |
679 | case SEARCH_EQUAL: |
680 | case SEARCH_HIGH: | |
681 | case SEARCH_LOW: | |
682 | case UPDATE_BLOCK: | |
5e30a07d HR |
683 | case WRITE_LONG_10: |
684 | case WRITE_SAME_10: | |
97a06435 GH |
685 | case SEARCH_HIGH_12: |
686 | case SEARCH_EQUAL_12: | |
687 | case SEARCH_LOW_12: | |
97a06435 GH |
688 | case MEDIUM_SCAN: |
689 | case SEND_VOLUME_TAG: | |
01bedeba | 690 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 691 | case MAINTENANCE_OUT: |
2599aece | 692 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 GH |
693 | break; |
694 | default: | |
2599aece PB |
695 | if (cmd->xfer) |
696 | cmd->mode = SCSI_XFER_FROM_DEV; | |
97a06435 | 697 | else { |
2599aece | 698 | cmd->mode = SCSI_XFER_NONE; |
97a06435 GH |
699 | } |
700 | break; | |
701 | } | |
702 | } | |
703 | ||
2599aece | 704 | static uint64_t scsi_cmd_lba(SCSICommand *cmd) |
2ec749cb | 705 | { |
2599aece | 706 | uint8_t *buf = cmd->buf; |
2ec749cb GH |
707 | uint64_t lba; |
708 | ||
709 | switch (buf[0] >> 5) { | |
710 | case 0: | |
711 | lba = (uint64_t) buf[3] | ((uint64_t) buf[2] << 8) | | |
712 | (((uint64_t) buf[1] & 0x1f) << 16); | |
713 | break; | |
714 | case 1: | |
715 | case 2: | |
716 | lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) | | |
717 | ((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24); | |
718 | break; | |
719 | case 4: | |
720 | lba = (uint64_t) buf[9] | ((uint64_t) buf[8] << 8) | | |
721 | ((uint64_t) buf[7] << 16) | ((uint64_t) buf[6] << 24) | | |
722 | ((uint64_t) buf[5] << 32) | ((uint64_t) buf[4] << 40) | | |
723 | ((uint64_t) buf[3] << 48) | ((uint64_t) buf[2] << 56); | |
724 | break; | |
725 | case 5: | |
726 | lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) | | |
727 | ((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24); | |
728 | break; | |
729 | default: | |
730 | lba = -1; | |
731 | ||
732 | } | |
733 | return lba; | |
734 | } | |
735 | ||
afa46c46 | 736 | int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb GH |
737 | { |
738 | int rc; | |
739 | ||
afa46c46 PB |
740 | if (dev->type == TYPE_TAPE) { |
741 | rc = scsi_req_stream_length(cmd, dev, buf); | |
2ec749cb | 742 | } else { |
afa46c46 | 743 | rc = scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
744 | } |
745 | if (rc != 0) | |
746 | return rc; | |
747 | ||
afa46c46 PB |
748 | memcpy(cmd->buf, buf, cmd->len); |
749 | scsi_cmd_xfer_mode(cmd); | |
750 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
751 | return 0; |
752 | } | |
ed3a34a3 | 753 | |
a1f0cce2 HR |
754 | /* |
755 | * Predefined sense codes | |
756 | */ | |
757 | ||
758 | /* No sense data available */ | |
759 | const struct SCSISense sense_code_NO_SENSE = { | |
760 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 | |
761 | }; | |
762 | ||
763 | /* LUN not ready, Manual intervention required */ | |
764 | const struct SCSISense sense_code_LUN_NOT_READY = { | |
765 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 | |
766 | }; | |
767 | ||
768 | /* LUN not ready, Medium not present */ | |
769 | const struct SCSISense sense_code_NO_MEDIUM = { | |
770 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 | |
771 | }; | |
772 | ||
773 | /* Hardware error, internal target failure */ | |
774 | const struct SCSISense sense_code_TARGET_FAILURE = { | |
775 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 | |
776 | }; | |
777 | ||
778 | /* Illegal request, invalid command operation code */ | |
779 | const struct SCSISense sense_code_INVALID_OPCODE = { | |
780 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 | |
781 | }; | |
782 | ||
783 | /* Illegal request, LBA out of range */ | |
784 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { | |
785 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 | |
786 | }; | |
787 | ||
788 | /* Illegal request, Invalid field in CDB */ | |
789 | const struct SCSISense sense_code_INVALID_FIELD = { | |
790 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 | |
791 | }; | |
792 | ||
793 | /* Illegal request, LUN not supported */ | |
794 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { | |
795 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 | |
796 | }; | |
797 | ||
a872a304 PB |
798 | /* Illegal request, Saving parameters not supported */ |
799 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { | |
800 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 | |
801 | }; | |
802 | ||
803 | /* Illegal request, Incompatible medium installed */ | |
804 | const struct SCSISense sense_code_INCOMPATIBLE_MEDIUM = { | |
805 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 | |
806 | }; | |
807 | ||
a1f0cce2 HR |
808 | /* Command aborted, I/O process terminated */ |
809 | const struct SCSISense sense_code_IO_ERROR = { | |
810 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 | |
811 | }; | |
812 | ||
813 | /* Command aborted, I_T Nexus loss occurred */ | |
814 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { | |
815 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 | |
816 | }; | |
817 | ||
818 | /* Command aborted, Logical Unit failure */ | |
819 | const struct SCSISense sense_code_LUN_FAILURE = { | |
820 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 | |
821 | }; | |
822 | ||
a872a304 PB |
823 | /* Unit attention, Power on, reset or bus device reset occurred */ |
824 | const struct SCSISense sense_code_RESET = { | |
825 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 | |
826 | }; | |
827 | ||
828 | /* Unit attention, Medium may have changed */ | |
829 | const struct SCSISense sense_code_MEDIUM_CHANGED = { | |
830 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 | |
831 | }; | |
832 | ||
833 | /* Unit attention, Reported LUNs data has changed */ | |
834 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { | |
835 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e | |
836 | }; | |
837 | ||
838 | /* Unit attention, Device internal reset */ | |
839 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { | |
840 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 | |
841 | }; | |
842 | ||
a1f0cce2 HR |
843 | /* |
844 | * scsi_build_sense | |
845 | * | |
b45ef674 | 846 | * Convert between fixed and descriptor sense buffers |
a1f0cce2 | 847 | */ |
b45ef674 PB |
848 | int scsi_build_sense(uint8_t *in_buf, int in_len, |
849 | uint8_t *buf, int len, bool fixed) | |
a1f0cce2 | 850 | { |
b45ef674 PB |
851 | bool fixed_in; |
852 | SCSISense sense; | |
a1f0cce2 HR |
853 | if (!fixed && len < 8) { |
854 | return 0; | |
855 | } | |
856 | ||
b45ef674 PB |
857 | if (in_len == 0) { |
858 | sense.key = NO_SENSE; | |
859 | sense.asc = 0; | |
860 | sense.ascq = 0; | |
861 | } else { | |
862 | fixed_in = (in_buf[0] & 2) == 0; | |
863 | ||
864 | if (fixed == fixed_in) { | |
865 | memcpy(buf, in_buf, MIN(len, in_len)); | |
866 | return MIN(len, in_len); | |
867 | } | |
868 | ||
869 | if (fixed_in) { | |
870 | sense.key = in_buf[2]; | |
871 | sense.asc = in_buf[12]; | |
872 | sense.ascq = in_buf[13]; | |
873 | } else { | |
874 | sense.key = in_buf[1]; | |
875 | sense.asc = in_buf[2]; | |
876 | sense.ascq = in_buf[3]; | |
877 | } | |
878 | } | |
879 | ||
a1f0cce2 HR |
880 | memset(buf, 0, len); |
881 | if (fixed) { | |
882 | /* Return fixed format sense buffer */ | |
883 | buf[0] = 0xf0; | |
884 | buf[2] = sense.key; | |
885 | buf[7] = 7; | |
886 | buf[12] = sense.asc; | |
887 | buf[13] = sense.ascq; | |
888 | return MIN(len, 18); | |
889 | } else { | |
890 | /* Return descriptor format sense buffer */ | |
891 | buf[0] = 0x72; | |
892 | buf[1] = sense.key; | |
893 | buf[2] = sense.asc; | |
894 | buf[3] = sense.ascq; | |
895 | return 8; | |
896 | } | |
897 | } | |
898 | ||
ec766865 GH |
899 | static const char *scsi_command_name(uint8_t cmd) |
900 | { | |
901 | static const char *names[] = { | |
902 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", | |
5e30a07d | 903 | [ REWIND ] = "REWIND", |
ec766865 GH |
904 | [ REQUEST_SENSE ] = "REQUEST_SENSE", |
905 | [ FORMAT_UNIT ] = "FORMAT_UNIT", | |
906 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", | |
907 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS", | |
908 | [ READ_6 ] = "READ_6", | |
909 | [ WRITE_6 ] = "WRITE_6", | |
910 | [ SEEK_6 ] = "SEEK_6", | |
911 | [ READ_REVERSE ] = "READ_REVERSE", | |
912 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", | |
913 | [ SPACE ] = "SPACE", | |
914 | [ INQUIRY ] = "INQUIRY", | |
915 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", | |
c7126d5b NB |
916 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", |
917 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
ec766865 GH |
918 | [ MODE_SELECT ] = "MODE_SELECT", |
919 | [ RESERVE ] = "RESERVE", | |
920 | [ RELEASE ] = "RELEASE", | |
921 | [ COPY ] = "COPY", | |
922 | [ ERASE ] = "ERASE", | |
923 | [ MODE_SENSE ] = "MODE_SENSE", | |
924 | [ START_STOP ] = "START_STOP", | |
925 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", | |
926 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", | |
927 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", | |
5e30a07d | 928 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", |
ec766865 GH |
929 | [ READ_10 ] = "READ_10", |
930 | [ WRITE_10 ] = "WRITE_10", | |
931 | [ SEEK_10 ] = "SEEK_10", | |
5e30a07d HR |
932 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", |
933 | [ VERIFY_10 ] = "VERIFY_10", | |
ec766865 GH |
934 | [ SEARCH_HIGH ] = "SEARCH_HIGH", |
935 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", | |
936 | [ SEARCH_LOW ] = "SEARCH_LOW", | |
937 | [ SET_LIMITS ] = "SET_LIMITS", | |
938 | [ PRE_FETCH ] = "PRE_FETCH", | |
545557d4 | 939 | /* READ_POSITION and PRE_FETCH use the same operation code */ |
ec766865 GH |
940 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", |
941 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", | |
942 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA", | |
943 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", | |
944 | [ COMPARE ] = "COMPARE", | |
945 | [ COPY_VERIFY ] = "COPY_VERIFY", | |
946 | [ WRITE_BUFFER ] = "WRITE_BUFFER", | |
947 | [ READ_BUFFER ] = "READ_BUFFER", | |
948 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", | |
5e30a07d HR |
949 | [ READ_LONG_10 ] = "READ_LONG_10", |
950 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", | |
ec766865 | 951 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", |
5e30a07d HR |
952 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", |
953 | [ UNMAP ] = "UNMAP", | |
ec766865 | 954 | [ READ_TOC ] = "READ_TOC", |
5e30a07d HR |
955 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", |
956 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", | |
ec766865 GH |
957 | [ LOG_SELECT ] = "LOG_SELECT", |
958 | [ LOG_SENSE ] = "LOG_SENSE", | |
959 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", | |
960 | [ RESERVE_10 ] = "RESERVE_10", | |
961 | [ RELEASE_10 ] = "RELEASE_10", | |
962 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", | |
963 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", | |
964 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", | |
5e30a07d HR |
965 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", |
966 | [ EXTENDED_COPY ] = "EXTENDED_COPY", | |
967 | [ ATA_PASSTHROUGH ] = "ATA_PASSTHROUGH", | |
968 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", | |
969 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", | |
970 | [ READ_16 ] = "READ_16", | |
971 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", | |
972 | [ WRITE_16 ] = "WRITE_16", | |
973 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", | |
974 | [ VERIFY_16 ] = "VERIFY_16", | |
975 | [ SYNCHRONIZE_CACHE_16 ] = "SYNCHRONIZE_CACHE_16", | |
976 | [ LOCATE_16 ] = "LOCATE_16", | |
977 | [ WRITE_SAME_16 ] = "WRITE_SAME_16", | |
978 | [ ERASE_16 ] = "ERASE_16", | |
979 | [ SERVICE_ACTION_IN ] = "SERVICE_ACTION_IN", | |
980 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", | |
981 | [ REPORT_LUNS ] = "REPORT_LUNS", | |
982 | [ BLANK ] = "BLANK", | |
983 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", | |
984 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
ec766865 | 985 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", |
5e30a07d | 986 | [ LOAD_UNLOAD ] = "LOAD_UNLOAD", |
ec766865 GH |
987 | [ READ_12 ] = "READ_12", |
988 | [ WRITE_12 ] = "WRITE_12", | |
989 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", | |
5e30a07d | 990 | [ VERIFY_12 ] = "VERIFY_12", |
ec766865 GH |
991 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", |
992 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", | |
993 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", | |
994 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", | |
995 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG", | |
5e30a07d | 996 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", |
ec766865 | 997 | [ SET_CD_SPEED ] = "SET_CD_SPEED", |
ec766865 GH |
998 | }; |
999 | ||
1000 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) | |
1001 | return "*UNKNOWN*"; | |
1002 | return names[cmd]; | |
1003 | } | |
1004 | ||
ad2d30f7 PB |
1005 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1006 | { | |
1007 | req->refcount++; | |
1008 | return req; | |
1009 | } | |
1010 | ||
1011 | void scsi_req_unref(SCSIRequest *req) | |
1012 | { | |
1013 | if (--req->refcount == 0) { | |
12010e7b PB |
1014 | if (req->ops->free_req) { |
1015 | req->ops->free_req(req); | |
ad2d30f7 PB |
1016 | } |
1017 | qemu_free(req); | |
1018 | } | |
1019 | } | |
1020 | ||
ad3376cc PB |
1021 | /* Tell the device that we finished processing this chunk of I/O. It |
1022 | will start the next chunk or complete the command. */ | |
1023 | void scsi_req_continue(SCSIRequest *req) | |
1024 | { | |
1025 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); | |
1026 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1027 | req->ops->write_data(req); |
ad3376cc | 1028 | } else { |
12010e7b | 1029 | req->ops->read_data(req); |
ad3376cc PB |
1030 | } |
1031 | } | |
1032 | ||
ab9adc88 PB |
1033 | /* Called by the devices when data is ready for the HBA. The HBA should |
1034 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1035 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1036 | void scsi_req_data(SCSIRequest *req, int len) |
1037 | { | |
1038 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); | |
c6df7102 | 1039 | req->bus->ops->transfer_data(req, len); |
ab9adc88 PB |
1040 | } |
1041 | ||
ec766865 GH |
1042 | void scsi_req_print(SCSIRequest *req) |
1043 | { | |
1044 | FILE *fp = stderr; | |
1045 | int i; | |
1046 | ||
1047 | fprintf(fp, "[%s id=%d] %s", | |
1048 | req->dev->qdev.parent_bus->name, | |
1049 | req->dev->id, | |
1050 | scsi_command_name(req->cmd.buf[0])); | |
1051 | for (i = 1; i < req->cmd.len; i++) { | |
1052 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1053 | } | |
1054 | switch (req->cmd.mode) { | |
1055 | case SCSI_XFER_NONE: | |
1056 | fprintf(fp, " - none\n"); | |
1057 | break; | |
1058 | case SCSI_XFER_FROM_DEV: | |
1059 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1060 | break; | |
1061 | case SCSI_XFER_TO_DEV: | |
1062 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1063 | break; | |
1064 | default: | |
1065 | fprintf(fp, " - Oops\n"); | |
1066 | break; | |
1067 | } | |
1068 | } | |
1069 | ||
682a9b21 | 1070 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1071 | { |
682a9b21 PB |
1072 | assert(req->status == -1); |
1073 | req->status = status; | |
b45ef674 PB |
1074 | |
1075 | assert(req->sense_len < sizeof(req->sense)); | |
1076 | if (status == GOOD) { | |
1077 | req->sense_len = 0; | |
1078 | } | |
1079 | ||
1080 | if (req->sense_len) { | |
1081 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
1082 | } | |
1083 | req->dev->sense_len = req->sense_len; | |
1084 | ||
6dc06f08 PB |
1085 | /* |
1086 | * Unit attention state is now stored in the device's sense buffer | |
1087 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1088 | * flags. | |
1089 | */ | |
1090 | scsi_clear_unit_attention(req); | |
1091 | ||
ad2d30f7 | 1092 | scsi_req_ref(req); |
e8637c90 | 1093 | scsi_req_dequeue(req); |
c6df7102 | 1094 | req->bus->ops->complete(req, req->status); |
ad2d30f7 | 1095 | scsi_req_unref(req); |
ed3a34a3 | 1096 | } |
db07c0f8 | 1097 | |
94d3f98a PB |
1098 | void scsi_req_cancel(SCSIRequest *req) |
1099 | { | |
12010e7b PB |
1100 | if (req->ops->cancel_io) { |
1101 | req->ops->cancel_io(req); | |
94d3f98a PB |
1102 | } |
1103 | scsi_req_ref(req); | |
1104 | scsi_req_dequeue(req); | |
1105 | if (req->bus->ops->cancel) { | |
1106 | req->bus->ops->cancel(req); | |
1107 | } | |
1108 | scsi_req_unref(req); | |
1109 | } | |
1110 | ||
19d110ab PB |
1111 | void scsi_req_abort(SCSIRequest *req, int status) |
1112 | { | |
12010e7b PB |
1113 | if (req->ops->cancel_io) { |
1114 | req->ops->cancel_io(req); | |
19d110ab | 1115 | } |
682a9b21 | 1116 | scsi_req_complete(req, status); |
19d110ab PB |
1117 | } |
1118 | ||
c7b48872 | 1119 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1120 | { |
1121 | SCSIRequest *req; | |
1122 | ||
1123 | while (!QTAILQ_EMPTY(&sdev->requests)) { | |
1124 | req = QTAILQ_FIRST(&sdev->requests); | |
94d3f98a | 1125 | scsi_req_cancel(req); |
c557e889 | 1126 | } |
c7b48872 | 1127 | sdev->unit_attention = sense; |
c557e889 PB |
1128 | } |
1129 | ||
db07c0f8 GN |
1130 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1131 | { | |
645a8ad6 | 1132 | SCSIDevice *d = DO_UPCAST(SCSIDevice, qdev, dev); |
db07c0f8 GN |
1133 | SCSIBus *bus = scsi_bus_from_device(d); |
1134 | char path[100]; | |
1135 | int i; | |
1136 | ||
1137 | for (i = 0; i < bus->ndev; i++) { | |
1138 | if (bus->devs[i] == d) { | |
1139 | break; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | assert(i != bus->ndev); | |
1144 | ||
1145 | snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev), i); | |
1146 | ||
1147 | return strdup(path); | |
1148 | } |