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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" |
3d5aba97 | 8 | #include "dma.h" |
d52affa7 | 9 | |
baa1bd89 | 10 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 11 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
afa46c46 | 12 | static int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf); |
71544d30 | 13 | static void scsi_req_dequeue(SCSIRequest *req); |
db07c0f8 | 14 | |
3cb75a7c PB |
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 | ||
0d936928 AL |
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, | |
d52affa7 GH |
35 | }; |
36 | static int next_scsi_bus; | |
37 | ||
b9eea3e6 AL |
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 | ||
d52affa7 | 74 | /* Create a scsi bus, and attach devices to it. */ |
afd4030c | 75 | void scsi_bus_new(SCSIBus *bus, DeviceState *host, const SCSIBusInfo *info) |
d52affa7 | 76 | { |
0d936928 | 77 | qbus_create_inplace(&bus->qbus, TYPE_SCSI_BUS, host, NULL); |
d52affa7 | 78 | bus->busnr = next_scsi_bus++; |
afd4030c | 79 | bus->info = info; |
cb23117b | 80 | bus->qbus.allow_hotplug = 1; |
d52affa7 GH |
81 | } |
82 | ||
71544d30 PB |
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: | |
5d0d2467 | 101 | assert(!req->sg); |
71544d30 PB |
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 | ||
d307af79 | 131 | static int scsi_qdev_init(DeviceState *qdev) |
d52affa7 | 132 | { |
b9eea3e6 | 133 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
d52affa7 | 134 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
7e0380b9 | 135 | SCSIDevice *d; |
01985dcf | 136 | int rc = -1; |
d52affa7 | 137 | |
0d3545e7 PB |
138 | if (dev->channel > bus->info->max_channel) { |
139 | error_report("bad scsi channel id: %d", dev->channel); | |
140 | goto err; | |
141 | } | |
7e0380b9 | 142 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
1ecda02b | 143 | error_report("bad scsi device id: %d", dev->id); |
d52affa7 GH |
144 | goto err; |
145 | } | |
d3d250bd PB |
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 | } | |
d52affa7 | 150 | |
7e0380b9 PB |
151 | if (dev->id == -1) { |
152 | int id = -1; | |
153 | if (dev->lun == -1) { | |
154 | dev->lun = 0; | |
155 | } | |
156 | do { | |
0d3545e7 | 157 | d = scsi_device_find(bus, dev->channel, ++id, dev->lun); |
d3d250bd PB |
158 | } while (d && d->lun == dev->lun && id < bus->info->max_target); |
159 | if (d && d->lun == dev->lun) { | |
7e0380b9 PB |
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 { | |
0d3545e7 | 167 | d = scsi_device_find(bus, dev->channel, dev->id, ++lun); |
7e0380b9 | 168 | } while (d && d->lun == lun && lun < bus->info->max_lun); |
d3d250bd | 169 | if (d && d->lun == lun) { |
7e0380b9 PB |
170 | error_report("no free lun"); |
171 | goto err; | |
172 | } | |
173 | dev->lun = lun; | |
174 | } else { | |
0d3545e7 | 175 | d = scsi_device_find(bus, dev->channel, dev->id, dev->lun); |
d3d250bd PB |
176 | assert(d); |
177 | if (d->lun == dev->lun && dev != d) { | |
7e0380b9 PB |
178 | qdev_free(&d->qdev); |
179 | } | |
d52affa7 | 180 | } |
d52affa7 | 181 | |
9af99d98 | 182 | QTAILQ_INIT(&dev->requests); |
b9eea3e6 | 183 | rc = scsi_device_init(dev); |
71544d30 PB |
184 | if (rc == 0) { |
185 | dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb, | |
186 | dev); | |
187 | } | |
d52affa7 GH |
188 | |
189 | err: | |
01985dcf GH |
190 | return rc; |
191 | } | |
192 | ||
193 | static int scsi_qdev_exit(DeviceState *qdev) | |
194 | { | |
b9eea3e6 | 195 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 196 | |
71544d30 PB |
197 | if (dev->vmsentry) { |
198 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
199 | } | |
b9eea3e6 | 200 | scsi_device_destroy(dev); |
01985dcf | 201 | return 0; |
d52affa7 GH |
202 | } |
203 | ||
d52affa7 | 204 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
2d1fd261 | 205 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, |
ce4e7e46 | 206 | int unit, bool removable, int bootindex) |
d52affa7 GH |
207 | { |
208 | const char *driver; | |
209 | DeviceState *dev; | |
210 | ||
f8b6cc00 | 211 | driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk"; |
d52affa7 GH |
212 | dev = qdev_create(&bus->qbus, driver); |
213 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
ce4e7e46 PB |
214 | if (bootindex >= 0) { |
215 | qdev_prop_set_int32(dev, "bootindex", bootindex); | |
216 | } | |
2d1fd261 SH |
217 | if (qdev_prop_exists(dev, "removable")) { |
218 | qdev_prop_set_bit(dev, "removable", removable); | |
219 | } | |
18846dee MA |
220 | if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) { |
221 | qdev_free(dev); | |
222 | return NULL; | |
223 | } | |
33e66b86 MA |
224 | if (qdev_init(dev) < 0) |
225 | return NULL; | |
b9eea3e6 | 226 | return SCSI_DEVICE(dev); |
d52affa7 GH |
227 | } |
228 | ||
fa66b909 | 229 | int scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 230 | { |
42e766a2 | 231 | Location loc; |
d52affa7 | 232 | DriveInfo *dinfo; |
fa66b909 | 233 | int res = 0, unit; |
d52affa7 | 234 | |
42e766a2 | 235 | loc_push_none(&loc); |
d3d250bd | 236 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
237 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
238 | if (dinfo == NULL) { | |
239 | continue; | |
240 | } | |
42e766a2 | 241 | qemu_opts_loc_restore(dinfo->opts); |
ce4e7e46 | 242 | if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false, -1)) { |
fa66b909 MA |
243 | res = -1; |
244 | break; | |
245 | } | |
d52affa7 | 246 | } |
42e766a2 | 247 | loc_pop(&loc); |
fa66b909 | 248 | return res; |
d52affa7 | 249 | } |
89b08ae1 | 250 | |
12a08998 PB |
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 | ||
afa46c46 PB |
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 | ||
adcf2754 | 272 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
273 | .size = sizeof(SCSIRequest), |
274 | .send_command = scsi_invalid_command | |
275 | }; | |
276 | ||
6dc06f08 PB |
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 | ||
adcf2754 | 290 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
291 | .size = sizeof(SCSIRequest), |
292 | .send_command = scsi_unit_attention | |
293 | }; | |
294 | ||
fdaef069 PB |
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; | |
ba74307c | 303 | uint8_t buf[2056]; |
fdaef069 PB |
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 | { | |
ba74307c PB |
318 | DeviceState *qdev; |
319 | int i, len, n; | |
0d3545e7 | 320 | int channel, id; |
ba74307c PB |
321 | bool found_lun0; |
322 | ||
fdaef069 PB |
323 | if (r->req.cmd.xfer < 16) { |
324 | return false; | |
325 | } | |
326 | if (r->req.cmd.buf[2] > 2) { | |
327 | return false; | |
328 | } | |
0d3545e7 | 329 | channel = r->req.dev->channel; |
ba74307c PB |
330 | id = r->req.dev->id; |
331 | found_lun0 = false; | |
332 | n = 0; | |
333 | QTAILQ_FOREACH(qdev, &r->req.bus->qbus.children, sibling) { | |
b9eea3e6 | 334 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 335 | |
0d3545e7 | 336 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
337 | if (dev->lun == 0) { |
338 | found_lun0 = true; | |
339 | } | |
340 | n += 8; | |
341 | } | |
342 | } | |
343 | if (!found_lun0) { | |
344 | n += 8; | |
345 | } | |
346 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
347 | if (len > sizeof(r->buf)) { | |
348 | /* TODO: > 256 LUNs? */ | |
349 | return false; | |
350 | } | |
351 | ||
fdaef069 | 352 | memset(r->buf, 0, len); |
ba74307c PB |
353 | stl_be_p(&r->buf, n); |
354 | i = found_lun0 ? 8 : 16; | |
355 | QTAILQ_FOREACH(qdev, &r->req.bus->qbus.children, sibling) { | |
b9eea3e6 | 356 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 357 | |
0d3545e7 | 358 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
359 | store_lun(&r->buf[i], dev->lun); |
360 | i += 8; | |
361 | } | |
fdaef069 | 362 | } |
ba74307c PB |
363 | assert(i == n + 8); |
364 | r->len = len; | |
fdaef069 PB |
365 | return true; |
366 | } | |
367 | ||
368 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
369 | { | |
370 | assert(r->req.dev->lun != r->req.lun); | |
371 | if (r->req.cmd.buf[1] & 0x2) { | |
372 | /* Command support data - optional, not implemented */ | |
373 | return false; | |
374 | } | |
375 | ||
376 | if (r->req.cmd.buf[1] & 0x1) { | |
377 | /* Vital product data */ | |
378 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
379 | r->buf[r->len++] = page_code ; /* this page */ |
380 | r->buf[r->len++] = 0x00; | |
381 | ||
382 | switch (page_code) { | |
383 | case 0x00: /* Supported page codes, mandatory */ | |
384 | { | |
385 | int pages; | |
386 | pages = r->len++; | |
387 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
388 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
389 | break; | |
390 | } | |
391 | default: | |
392 | return false; | |
393 | } | |
394 | /* done with EVPD */ | |
395 | assert(r->len < sizeof(r->buf)); | |
396 | r->len = MIN(r->req.cmd.xfer, r->len); | |
397 | return true; | |
398 | } | |
399 | ||
400 | /* Standard INQUIRY data */ | |
401 | if (r->req.cmd.buf[2] != 0) { | |
402 | return false; | |
403 | } | |
404 | ||
405 | /* PAGE CODE == 0 */ | |
fdaef069 PB |
406 | r->len = MIN(r->req.cmd.xfer, 36); |
407 | memset(r->buf, 0, r->len); | |
408 | if (r->req.lun != 0) { | |
409 | r->buf[0] = TYPE_NO_LUN; | |
410 | } else { | |
411 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
412 | r->buf[2] = 5; /* Version */ | |
413 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
414 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 415 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
416 | memcpy(&r->buf[8], "QEMU ", 8); |
417 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
418 | strncpy((char *) &r->buf[32], QEMU_VERSION, 4); | |
419 | } | |
420 | return true; | |
421 | } | |
422 | ||
423 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) | |
424 | { | |
425 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
426 | ||
427 | switch (buf[0]) { | |
428 | case REPORT_LUNS: | |
429 | if (!scsi_target_emulate_report_luns(r)) { | |
430 | goto illegal_request; | |
431 | } | |
432 | break; | |
433 | case INQUIRY: | |
434 | if (!scsi_target_emulate_inquiry(r)) { | |
435 | goto illegal_request; | |
436 | } | |
437 | break; | |
739df215 | 438 | case REQUEST_SENSE: |
8b2a04ee PB |
439 | r->len = scsi_device_get_sense(r->req.dev, r->buf, |
440 | MIN(req->cmd.xfer, sizeof r->buf), | |
739df215 | 441 | (req->cmd.buf[1] & 1) == 0); |
3653d8c4 | 442 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 443 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
444 | r->req.dev->sense_len = 0; |
445 | r->req.dev->sense_is_ua = false; | |
446 | } | |
739df215 | 447 | break; |
fdaef069 PB |
448 | default: |
449 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); | |
450 | scsi_req_complete(req, CHECK_CONDITION); | |
451 | return 0; | |
452 | illegal_request: | |
453 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
454 | scsi_req_complete(req, CHECK_CONDITION); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | if (!r->len) { | |
459 | scsi_req_complete(req, GOOD); | |
460 | } | |
461 | return r->len; | |
462 | } | |
463 | ||
464 | static void scsi_target_read_data(SCSIRequest *req) | |
465 | { | |
466 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
467 | uint32_t n; | |
468 | ||
469 | n = r->len; | |
470 | if (n > 0) { | |
471 | r->len = 0; | |
472 | scsi_req_data(&r->req, n); | |
473 | } else { | |
474 | scsi_req_complete(&r->req, GOOD); | |
475 | } | |
476 | } | |
477 | ||
478 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
479 | { | |
480 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
481 | ||
482 | return r->buf; | |
483 | } | |
484 | ||
adcf2754 | 485 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
486 | .size = sizeof(SCSITargetReq), |
487 | .send_command = scsi_target_send_command, | |
488 | .read_data = scsi_target_read_data, | |
489 | .get_buf = scsi_target_get_buf, | |
490 | }; | |
491 | ||
492 | ||
adcf2754 PB |
493 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
494 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
495 | { |
496 | SCSIRequest *req; | |
497 | ||
7267c094 | 498 | req = g_malloc0(reqops->size); |
5c6c0e51 | 499 | req->refcount = 1; |
89b08ae1 GH |
500 | req->bus = scsi_bus_from_device(d); |
501 | req->dev = d; | |
502 | req->tag = tag; | |
503 | req->lun = lun; | |
c5bf71a9 | 504 | req->hba_private = hba_private; |
ed3a34a3 | 505 | req->status = -1; |
b45ef674 | 506 | req->sense_len = 0; |
8dbd4574 | 507 | req->ops = reqops; |
5138efec | 508 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
509 | return req; |
510 | } | |
511 | ||
c5bf71a9 | 512 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 513 | uint8_t *buf, void *hba_private) |
43a2b339 | 514 | { |
6dc06f08 | 515 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
c39ce112 | 516 | SCSIRequest *req; |
afa46c46 PB |
517 | SCSICommand cmd; |
518 | ||
519 | if (scsi_req_parse(&cmd, d, buf) != 0) { | |
520 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); | |
521 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
522 | } else { | |
523 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], | |
524 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 525 | if (cmd.lba != -1) { |
afa46c46 PB |
526 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
527 | cmd.lba); | |
528 | } | |
fdaef069 | 529 | |
12a08998 PB |
530 | if (cmd.xfer > INT32_MAX) { |
531 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
532 | } else if ((d->unit_attention.key == UNIT_ATTENTION || | |
533 | bus->unit_attention.key == UNIT_ATTENTION) && | |
534 | (buf[0] != INQUIRY && | |
535 | buf[0] != REPORT_LUNS && | |
536 | buf[0] != GET_CONFIGURATION && | |
537 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
538 | ||
539 | /* | |
540 | * If we already have a pending unit attention condition, | |
541 | * report this one before triggering another one. | |
542 | */ | |
543 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
6dc06f08 PB |
544 | req = scsi_req_alloc(&reqops_unit_attention, d, tag, lun, |
545 | hba_private); | |
546 | } else if (lun != d->lun || | |
e5f38ff6 PB |
547 | buf[0] == REPORT_LUNS || |
548 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
fdaef069 PB |
549 | req = scsi_req_alloc(&reqops_target_command, d, tag, lun, |
550 | hba_private); | |
551 | } else { | |
b9eea3e6 | 552 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 553 | } |
afa46c46 PB |
554 | } |
555 | ||
556 | req->cmd = cmd; | |
01e95455 PB |
557 | req->resid = req->cmd.xfer; |
558 | ||
98254542 PB |
559 | switch (buf[0]) { |
560 | case INQUIRY: | |
561 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
562 | break; | |
563 | case TEST_UNIT_READY: | |
564 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
565 | break; | |
566 | case REPORT_LUNS: | |
567 | trace_scsi_report_luns(d->id, lun, tag); | |
568 | break; | |
569 | case REQUEST_SENSE: | |
570 | trace_scsi_request_sense(d->id, lun, tag); | |
571 | break; | |
572 | default: | |
573 | break; | |
574 | } | |
575 | ||
c39ce112 | 576 | return req; |
43a2b339 PB |
577 | } |
578 | ||
0c34459b PB |
579 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
580 | { | |
12010e7b | 581 | return req->ops->get_buf(req); |
0c34459b PB |
582 | } |
583 | ||
6dc06f08 PB |
584 | static void scsi_clear_unit_attention(SCSIRequest *req) |
585 | { | |
586 | SCSISense *ua; | |
587 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
588 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
589 | return; | |
590 | } | |
591 | ||
592 | /* | |
593 | * If an INQUIRY command enters the enabled command state, | |
594 | * the device server shall [not] clear any unit attention condition; | |
595 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
596 | */ | |
597 | if (req->cmd.buf[0] == INQUIRY || | |
598 | req->cmd.buf[0] == GET_CONFIGURATION || | |
599 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
600 | return; | |
601 | } | |
602 | ||
603 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
604 | ua = &req->dev->unit_attention; | |
605 | } else { | |
606 | ua = &req->bus->unit_attention; | |
607 | } | |
608 | ||
609 | /* | |
610 | * If a REPORT LUNS command enters the enabled command state, [...] | |
611 | * the device server shall clear any pending unit attention condition | |
612 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
613 | */ | |
614 | if (req->cmd.buf[0] == REPORT_LUNS && | |
615 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
616 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
617 | return; | |
618 | } | |
619 | ||
620 | *ua = SENSE_CODE(NO_SENSE); | |
621 | } | |
622 | ||
74382217 HR |
623 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
624 | { | |
6dc06f08 PB |
625 | int ret; |
626 | ||
b45ef674 PB |
627 | assert(len >= 14); |
628 | if (!req->sense_len) { | |
74382217 HR |
629 | return 0; |
630 | } | |
6dc06f08 PB |
631 | |
632 | ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true); | |
633 | ||
634 | /* | |
635 | * FIXME: clearing unit attention conditions upon autosense should be done | |
636 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
637 | * (SAM-5, 5.14). | |
638 | * | |
639 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
640 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 641 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 642 | */ |
3653d8c4 | 643 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 644 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
645 | req->dev->sense_len = 0; |
646 | req->dev->sense_is_ua = false; | |
647 | } | |
6dc06f08 | 648 | return ret; |
b45ef674 PB |
649 | } |
650 | ||
651 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
652 | { | |
653 | return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed); | |
654 | } | |
655 | ||
656 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
657 | { | |
658 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
659 | sense.key, sense.asc, sense.ascq); | |
660 | memset(req->sense, 0, 18); | |
77e4743c | 661 | req->sense[0] = 0x70; |
b45ef674 | 662 | req->sense[2] = sense.key; |
eae31cb9 | 663 | req->sense[7] = 10; |
b45ef674 PB |
664 | req->sense[12] = sense.asc; |
665 | req->sense[13] = sense.ascq; | |
666 | req->sense_len = 18; | |
74382217 HR |
667 | } |
668 | ||
63f740dd | 669 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 670 | { |
5c6c0e51 HR |
671 | assert(!req->enqueued); |
672 | scsi_req_ref(req); | |
3d5aba97 PB |
673 | if (req->bus->info->get_sg_list) { |
674 | req->sg = req->bus->info->get_sg_list(req); | |
675 | } else { | |
676 | req->sg = NULL; | |
677 | } | |
5c6c0e51 HR |
678 | req->enqueued = true; |
679 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 680 | } |
fc4f0754 | 681 | |
63f740dd PB |
682 | int32_t scsi_req_enqueue(SCSIRequest *req) |
683 | { | |
684 | int32_t rc; | |
685 | ||
686 | assert(!req->retry); | |
687 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 688 | scsi_req_ref(req); |
c39ce112 | 689 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
690 | scsi_req_unref(req); |
691 | return rc; | |
89b08ae1 GH |
692 | } |
693 | ||
a1f0cce2 | 694 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 695 | { |
5138efec | 696 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 697 | req->retry = false; |
e8637c90 JK |
698 | if (req->enqueued) { |
699 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
700 | req->enqueued = false; | |
ad2d30f7 | 701 | scsi_req_unref(req); |
e8637c90 JK |
702 | } |
703 | } | |
704 | ||
06b86357 PB |
705 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
706 | { | |
707 | /* MMC-6, paragraph 6.7. */ | |
708 | switch (type) { | |
709 | case 0: | |
710 | if ((data_type & 3) == 0) { | |
711 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
712 | return 16 * num_desc + 8; | |
713 | } else { | |
714 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
715 | return 6 * num_desc + 8; | |
716 | } | |
717 | case 1: | |
718 | case 4: | |
719 | case 5: | |
720 | return 8 * num_desc + 8; | |
721 | case 2: | |
722 | return 2048 * num_desc + 8; | |
723 | case 3: | |
724 | return 16 * num_desc + 8; | |
725 | default: | |
726 | return 8; | |
727 | } | |
728 | } | |
729 | ||
2599aece | 730 | static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 731 | { |
2599aece | 732 | switch (buf[0] >> 5) { |
2ec749cb | 733 | case 0: |
2599aece PB |
734 | cmd->xfer = buf[4]; |
735 | cmd->len = 6; | |
2ec749cb GH |
736 | break; |
737 | case 1: | |
738 | case 2: | |
bd5da232 | 739 | cmd->xfer = lduw_be_p(&buf[7]); |
2599aece | 740 | cmd->len = 10; |
2ec749cb GH |
741 | break; |
742 | case 4: | |
06b86357 | 743 | cmd->xfer = ldl_be_p(&buf[10]) & 0xffffffffULL; |
2599aece | 744 | cmd->len = 16; |
2ec749cb GH |
745 | break; |
746 | case 5: | |
06b86357 | 747 | cmd->xfer = ldl_be_p(&buf[6]) & 0xffffffffULL; |
2599aece | 748 | cmd->len = 12; |
2ec749cb GH |
749 | break; |
750 | default: | |
751 | return -1; | |
752 | } | |
753 | ||
2599aece | 754 | switch (buf[0]) { |
2ec749cb | 755 | case TEST_UNIT_READY: |
5e30a07d | 756 | case REWIND: |
2ec749cb | 757 | case START_STOP: |
00a01ad4 | 758 | case SET_CAPACITY: |
2ec749cb | 759 | case WRITE_FILEMARKS: |
06b86357 | 760 | case WRITE_FILEMARKS_16: |
2ec749cb | 761 | case SPACE: |
a5e3d9ef BK |
762 | case RESERVE: |
763 | case RELEASE: | |
2ec749cb GH |
764 | case ERASE: |
765 | case ALLOW_MEDIUM_REMOVAL: | |
5e30a07d | 766 | case VERIFY_10: |
2ec749cb GH |
767 | case SEEK_10: |
768 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
769 | case SYNCHRONIZE_CACHE_16: |
770 | case LOCATE_16: | |
2ec749cb GH |
771 | case LOCK_UNLOCK_CACHE: |
772 | case LOAD_UNLOAD: | |
773 | case SET_CD_SPEED: | |
774 | case SET_LIMITS: | |
5e30a07d | 775 | case WRITE_LONG_10: |
2ec749cb GH |
776 | case MOVE_MEDIUM: |
777 | case UPDATE_BLOCK: | |
06b86357 PB |
778 | case RESERVE_TRACK: |
779 | case SET_READ_AHEAD: | |
780 | case PRE_FETCH: | |
781 | case PRE_FETCH_16: | |
782 | case ALLOW_OVERWRITE: | |
2599aece | 783 | cmd->xfer = 0; |
2ec749cb GH |
784 | break; |
785 | case MODE_SENSE: | |
786 | break; | |
5e30a07d | 787 | case WRITE_SAME_10: |
a5ee9085 PB |
788 | case WRITE_SAME_16: |
789 | cmd->xfer = dev->blocksize; | |
2ec749cb | 790 | break; |
5e30a07d | 791 | case READ_CAPACITY_10: |
2599aece | 792 | cmd->xfer = 8; |
2ec749cb GH |
793 | break; |
794 | case READ_BLOCK_LIMITS: | |
2599aece | 795 | cmd->xfer = 6; |
2ec749cb | 796 | break; |
2ec749cb | 797 | case SEND_VOLUME_TAG: |
06b86357 PB |
798 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
799 | if (dev->type == TYPE_ROM) { | |
800 | cmd->xfer = buf[10] | (buf[9] << 8); | |
801 | } else { | |
802 | cmd->xfer = buf[9] | (buf[8] << 8); | |
803 | } | |
2ec749cb | 804 | break; |
f62d0594 PB |
805 | case WRITE_6: |
806 | /* length 0 means 256 blocks */ | |
807 | if (cmd->xfer == 0) { | |
808 | cmd->xfer = 256; | |
809 | } | |
2ec749cb | 810 | case WRITE_10: |
5e30a07d | 811 | case WRITE_VERIFY_10: |
2ec749cb GH |
812 | case WRITE_12: |
813 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
814 | case WRITE_16: |
815 | case WRITE_VERIFY_16: | |
2599aece | 816 | cmd->xfer *= dev->blocksize; |
2ec749cb | 817 | break; |
2ec749cb GH |
818 | case READ_6: |
819 | case READ_REVERSE: | |
f62d0594 PB |
820 | /* length 0 means 256 blocks */ |
821 | if (cmd->xfer == 0) { | |
822 | cmd->xfer = 256; | |
823 | } | |
824 | case READ_10: | |
2ec749cb GH |
825 | case RECOVER_BUFFERED_DATA: |
826 | case READ_12: | |
bd536cf3 | 827 | case READ_16: |
2599aece | 828 | cmd->xfer *= dev->blocksize; |
2ec749cb | 829 | break; |
06b86357 PB |
830 | case FORMAT_UNIT: |
831 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
832 | * for block devices are restricted to the header right now. */ | |
833 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
834 | cmd->xfer = 12; | |
835 | } else { | |
836 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
837 | } | |
838 | break; | |
2ec749cb | 839 | case INQUIRY: |
06b86357 PB |
840 | case RECEIVE_DIAGNOSTIC: |
841 | case SEND_DIAGNOSTIC: | |
2599aece | 842 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 843 | break; |
06b86357 PB |
844 | case READ_CD: |
845 | case READ_BUFFER: | |
846 | case WRITE_BUFFER: | |
847 | case SEND_CUE_SHEET: | |
848 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
849 | break; | |
850 | case PERSISTENT_RESERVE_OUT: | |
851 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
852 | break; | |
853 | case ERASE_12: | |
854 | if (dev->type == TYPE_ROM) { | |
855 | /* MMC command GET PERFORMANCE. */ | |
856 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
857 | buf[10], buf[1] & 0x1f); | |
858 | } | |
859 | break; | |
860 | case MECHANISM_STATUS: | |
861 | case READ_DVD_STRUCTURE: | |
862 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
863 | case MAINTENANCE_OUT: |
864 | case MAINTENANCE_IN: | |
2599aece | 865 | if (dev->type == TYPE_ROM) { |
c7126d5b | 866 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 867 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
868 | } |
869 | break; | |
2ec749cb GH |
870 | } |
871 | return 0; | |
872 | } | |
873 | ||
2599aece | 874 | static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 875 | { |
2599aece | 876 | switch (buf[0]) { |
2ec749cb | 877 | /* stream commands */ |
06b86357 PB |
878 | case ERASE_12: |
879 | case ERASE_16: | |
880 | cmd->xfer = 0; | |
881 | break; | |
2ec749cb GH |
882 | case READ_6: |
883 | case READ_REVERSE: | |
884 | case RECOVER_BUFFERED_DATA: | |
885 | case WRITE_6: | |
2599aece PB |
886 | cmd->len = 6; |
887 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); | |
888 | if (buf[1] & 0x01) { /* fixed */ | |
889 | cmd->xfer *= dev->blocksize; | |
890 | } | |
2ec749cb | 891 | break; |
065c2599 PB |
892 | case READ_16: |
893 | case READ_REVERSE_16: | |
894 | case VERIFY_16: | |
895 | case WRITE_16: | |
896 | cmd->len = 16; | |
897 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); | |
898 | if (buf[1] & 0x01) { /* fixed */ | |
899 | cmd->xfer *= dev->blocksize; | |
900 | } | |
901 | break; | |
2ec749cb GH |
902 | case REWIND: |
903 | case START_STOP: | |
2599aece PB |
904 | cmd->len = 6; |
905 | cmd->xfer = 0; | |
2ec749cb | 906 | break; |
06b86357 PB |
907 | case SPACE_16: |
908 | cmd->xfer = buf[13] | (buf[12] << 8); | |
909 | break; | |
910 | case READ_POSITION: | |
911 | cmd->xfer = buf[8] | (buf[7] << 8); | |
912 | break; | |
913 | case FORMAT_UNIT: | |
914 | cmd->xfer = buf[4] | (buf[3] << 8); | |
915 | break; | |
2ec749cb GH |
916 | /* generic commands */ |
917 | default: | |
2599aece | 918 | return scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
919 | } |
920 | return 0; | |
921 | } | |
922 | ||
2599aece | 923 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 924 | { |
a5ee9085 PB |
925 | if (!cmd->xfer) { |
926 | cmd->mode = SCSI_XFER_NONE; | |
927 | return; | |
928 | } | |
2599aece | 929 | switch (cmd->buf[0]) { |
97a06435 GH |
930 | case WRITE_6: |
931 | case WRITE_10: | |
5e30a07d | 932 | case WRITE_VERIFY_10: |
97a06435 GH |
933 | case WRITE_12: |
934 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
935 | case WRITE_16: |
936 | case WRITE_VERIFY_16: | |
97a06435 GH |
937 | case COPY: |
938 | case COPY_VERIFY: | |
939 | case COMPARE: | |
940 | case CHANGE_DEFINITION: | |
941 | case LOG_SELECT: | |
942 | case MODE_SELECT: | |
943 | case MODE_SELECT_10: | |
944 | case SEND_DIAGNOSTIC: | |
945 | case WRITE_BUFFER: | |
946 | case FORMAT_UNIT: | |
947 | case REASSIGN_BLOCKS: | |
97a06435 GH |
948 | case SEARCH_EQUAL: |
949 | case SEARCH_HIGH: | |
950 | case SEARCH_LOW: | |
951 | case UPDATE_BLOCK: | |
5e30a07d HR |
952 | case WRITE_LONG_10: |
953 | case WRITE_SAME_10: | |
a5ee9085 | 954 | case WRITE_SAME_16: |
381b634c | 955 | case UNMAP: |
97a06435 GH |
956 | case SEARCH_HIGH_12: |
957 | case SEARCH_EQUAL_12: | |
958 | case SEARCH_LOW_12: | |
97a06435 GH |
959 | case MEDIUM_SCAN: |
960 | case SEND_VOLUME_TAG: | |
06b86357 PB |
961 | case SEND_CUE_SHEET: |
962 | case SEND_DVD_STRUCTURE: | |
01bedeba | 963 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 964 | case MAINTENANCE_OUT: |
381b634c | 965 | case ATA_PASSTHROUGH: |
2599aece | 966 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 GH |
967 | break; |
968 | default: | |
a5ee9085 | 969 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
970 | break; |
971 | } | |
972 | } | |
973 | ||
2599aece | 974 | static uint64_t scsi_cmd_lba(SCSICommand *cmd) |
2ec749cb | 975 | { |
2599aece | 976 | uint8_t *buf = cmd->buf; |
2ec749cb GH |
977 | uint64_t lba; |
978 | ||
979 | switch (buf[0] >> 5) { | |
980 | case 0: | |
bd5da232 | 981 | lba = ldl_be_p(&buf[0]) & 0x1fffff; |
2ec749cb GH |
982 | break; |
983 | case 1: | |
984 | case 2: | |
bd5da232 | 985 | case 5: |
06b86357 | 986 | lba = ldl_be_p(&buf[2]) & 0xffffffffULL; |
2ec749cb GH |
987 | break; |
988 | case 4: | |
bd5da232 | 989 | lba = ldq_be_p(&buf[2]); |
2ec749cb GH |
990 | break; |
991 | default: | |
992 | lba = -1; | |
993 | ||
994 | } | |
995 | return lba; | |
996 | } | |
997 | ||
afa46c46 | 998 | int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb GH |
999 | { |
1000 | int rc; | |
1001 | ||
afa46c46 PB |
1002 | if (dev->type == TYPE_TAPE) { |
1003 | rc = scsi_req_stream_length(cmd, dev, buf); | |
2ec749cb | 1004 | } else { |
afa46c46 | 1005 | rc = scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
1006 | } |
1007 | if (rc != 0) | |
1008 | return rc; | |
1009 | ||
afa46c46 PB |
1010 | memcpy(cmd->buf, buf, cmd->len); |
1011 | scsi_cmd_xfer_mode(cmd); | |
1012 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1013 | return 0; |
1014 | } | |
ed3a34a3 | 1015 | |
a1f0cce2 HR |
1016 | /* |
1017 | * Predefined sense codes | |
1018 | */ | |
1019 | ||
1020 | /* No sense data available */ | |
1021 | const struct SCSISense sense_code_NO_SENSE = { | |
1022 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 | |
1023 | }; | |
1024 | ||
1025 | /* LUN not ready, Manual intervention required */ | |
1026 | const struct SCSISense sense_code_LUN_NOT_READY = { | |
1027 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 | |
1028 | }; | |
1029 | ||
1030 | /* LUN not ready, Medium not present */ | |
1031 | const struct SCSISense sense_code_NO_MEDIUM = { | |
1032 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 | |
1033 | }; | |
1034 | ||
68bb01f3 MA |
1035 | /* LUN not ready, medium removal prevented */ |
1036 | const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = { | |
1037 | .key = NOT_READY, .asc = 0x53, .ascq = 0x00 | |
1038 | }; | |
1039 | ||
a1f0cce2 HR |
1040 | /* Hardware error, internal target failure */ |
1041 | const struct SCSISense sense_code_TARGET_FAILURE = { | |
1042 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 | |
1043 | }; | |
1044 | ||
1045 | /* Illegal request, invalid command operation code */ | |
1046 | const struct SCSISense sense_code_INVALID_OPCODE = { | |
1047 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 | |
1048 | }; | |
1049 | ||
1050 | /* Illegal request, LBA out of range */ | |
1051 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { | |
1052 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 | |
1053 | }; | |
1054 | ||
1055 | /* Illegal request, Invalid field in CDB */ | |
1056 | const struct SCSISense sense_code_INVALID_FIELD = { | |
1057 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 | |
1058 | }; | |
1059 | ||
1060 | /* Illegal request, LUN not supported */ | |
1061 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { | |
1062 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 | |
1063 | }; | |
1064 | ||
a872a304 PB |
1065 | /* Illegal request, Saving parameters not supported */ |
1066 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { | |
1067 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 | |
1068 | }; | |
1069 | ||
1070 | /* Illegal request, Incompatible medium installed */ | |
67cc61e4 | 1071 | const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = { |
a872a304 PB |
1072 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 |
1073 | }; | |
1074 | ||
68bb01f3 MA |
1075 | /* Illegal request, medium removal prevented */ |
1076 | const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = { | |
1077 | .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x00 | |
1078 | }; | |
1079 | ||
a1f0cce2 HR |
1080 | /* Command aborted, I/O process terminated */ |
1081 | const struct SCSISense sense_code_IO_ERROR = { | |
1082 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 | |
1083 | }; | |
1084 | ||
1085 | /* Command aborted, I_T Nexus loss occurred */ | |
1086 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { | |
1087 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 | |
1088 | }; | |
1089 | ||
1090 | /* Command aborted, Logical Unit failure */ | |
1091 | const struct SCSISense sense_code_LUN_FAILURE = { | |
1092 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 | |
1093 | }; | |
1094 | ||
a872a304 PB |
1095 | /* Unit attention, Power on, reset or bus device reset occurred */ |
1096 | const struct SCSISense sense_code_RESET = { | |
1097 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 | |
1098 | }; | |
1099 | ||
8a9c16f6 PB |
1100 | /* Unit attention, No medium */ |
1101 | const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = { | |
1102 | .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00 | |
1103 | }; | |
1104 | ||
a872a304 PB |
1105 | /* Unit attention, Medium may have changed */ |
1106 | const struct SCSISense sense_code_MEDIUM_CHANGED = { | |
1107 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 | |
1108 | }; | |
1109 | ||
1110 | /* Unit attention, Reported LUNs data has changed */ | |
1111 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { | |
1112 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e | |
1113 | }; | |
1114 | ||
1115 | /* Unit attention, Device internal reset */ | |
1116 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { | |
1117 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 | |
1118 | }; | |
1119 | ||
a1f0cce2 HR |
1120 | /* |
1121 | * scsi_build_sense | |
1122 | * | |
b45ef674 | 1123 | * Convert between fixed and descriptor sense buffers |
a1f0cce2 | 1124 | */ |
b45ef674 PB |
1125 | int scsi_build_sense(uint8_t *in_buf, int in_len, |
1126 | uint8_t *buf, int len, bool fixed) | |
a1f0cce2 | 1127 | { |
b45ef674 PB |
1128 | bool fixed_in; |
1129 | SCSISense sense; | |
a1f0cce2 HR |
1130 | if (!fixed && len < 8) { |
1131 | return 0; | |
1132 | } | |
1133 | ||
b45ef674 PB |
1134 | if (in_len == 0) { |
1135 | sense.key = NO_SENSE; | |
1136 | sense.asc = 0; | |
1137 | sense.ascq = 0; | |
1138 | } else { | |
1139 | fixed_in = (in_buf[0] & 2) == 0; | |
1140 | ||
1141 | if (fixed == fixed_in) { | |
1142 | memcpy(buf, in_buf, MIN(len, in_len)); | |
1143 | return MIN(len, in_len); | |
1144 | } | |
1145 | ||
1146 | if (fixed_in) { | |
1147 | sense.key = in_buf[2]; | |
1148 | sense.asc = in_buf[12]; | |
1149 | sense.ascq = in_buf[13]; | |
1150 | } else { | |
1151 | sense.key = in_buf[1]; | |
1152 | sense.asc = in_buf[2]; | |
1153 | sense.ascq = in_buf[3]; | |
1154 | } | |
1155 | } | |
1156 | ||
a1f0cce2 HR |
1157 | memset(buf, 0, len); |
1158 | if (fixed) { | |
1159 | /* Return fixed format sense buffer */ | |
77e4743c | 1160 | buf[0] = 0x70; |
a1f0cce2 | 1161 | buf[2] = sense.key; |
eae31cb9 | 1162 | buf[7] = 10; |
a1f0cce2 HR |
1163 | buf[12] = sense.asc; |
1164 | buf[13] = sense.ascq; | |
1165 | return MIN(len, 18); | |
1166 | } else { | |
1167 | /* Return descriptor format sense buffer */ | |
1168 | buf[0] = 0x72; | |
1169 | buf[1] = sense.key; | |
1170 | buf[2] = sense.asc; | |
1171 | buf[3] = sense.ascq; | |
1172 | return 8; | |
1173 | } | |
1174 | } | |
1175 | ||
ec766865 GH |
1176 | static const char *scsi_command_name(uint8_t cmd) |
1177 | { | |
1178 | static const char *names[] = { | |
1179 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", | |
5e30a07d | 1180 | [ REWIND ] = "REWIND", |
ec766865 GH |
1181 | [ REQUEST_SENSE ] = "REQUEST_SENSE", |
1182 | [ FORMAT_UNIT ] = "FORMAT_UNIT", | |
1183 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", | |
1184 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS", | |
1185 | [ READ_6 ] = "READ_6", | |
1186 | [ WRITE_6 ] = "WRITE_6", | |
00a01ad4 | 1187 | [ SET_CAPACITY ] = "SET_CAPACITY", |
ec766865 GH |
1188 | [ READ_REVERSE ] = "READ_REVERSE", |
1189 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", | |
1190 | [ SPACE ] = "SPACE", | |
1191 | [ INQUIRY ] = "INQUIRY", | |
1192 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", | |
c7126d5b NB |
1193 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", |
1194 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
ec766865 GH |
1195 | [ MODE_SELECT ] = "MODE_SELECT", |
1196 | [ RESERVE ] = "RESERVE", | |
1197 | [ RELEASE ] = "RELEASE", | |
1198 | [ COPY ] = "COPY", | |
1199 | [ ERASE ] = "ERASE", | |
1200 | [ MODE_SENSE ] = "MODE_SENSE", | |
1201 | [ START_STOP ] = "START_STOP", | |
1202 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", | |
1203 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", | |
1204 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", | |
5e30a07d | 1205 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", |
ec766865 GH |
1206 | [ READ_10 ] = "READ_10", |
1207 | [ WRITE_10 ] = "WRITE_10", | |
1208 | [ SEEK_10 ] = "SEEK_10", | |
5e30a07d HR |
1209 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", |
1210 | [ VERIFY_10 ] = "VERIFY_10", | |
ec766865 GH |
1211 | [ SEARCH_HIGH ] = "SEARCH_HIGH", |
1212 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", | |
1213 | [ SEARCH_LOW ] = "SEARCH_LOW", | |
1214 | [ SET_LIMITS ] = "SET_LIMITS", | |
00a01ad4 | 1215 | [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION", |
545557d4 | 1216 | /* READ_POSITION and PRE_FETCH use the same operation code */ |
ec766865 GH |
1217 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", |
1218 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", | |
1219 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA", | |
1220 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", | |
1221 | [ COMPARE ] = "COMPARE", | |
1222 | [ COPY_VERIFY ] = "COPY_VERIFY", | |
1223 | [ WRITE_BUFFER ] = "WRITE_BUFFER", | |
1224 | [ READ_BUFFER ] = "READ_BUFFER", | |
1225 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", | |
5e30a07d HR |
1226 | [ READ_LONG_10 ] = "READ_LONG_10", |
1227 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", | |
ec766865 | 1228 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", |
5e30a07d HR |
1229 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", |
1230 | [ UNMAP ] = "UNMAP", | |
ec766865 | 1231 | [ READ_TOC ] = "READ_TOC", |
5e30a07d | 1232 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", |
3e46d87d | 1233 | [ SANITIZE ] = "SANITIZE", |
5e30a07d | 1234 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", |
ec766865 GH |
1235 | [ LOG_SELECT ] = "LOG_SELECT", |
1236 | [ LOG_SENSE ] = "LOG_SENSE", | |
1237 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", | |
1238 | [ RESERVE_10 ] = "RESERVE_10", | |
1239 | [ RELEASE_10 ] = "RELEASE_10", | |
1240 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", | |
1241 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", | |
1242 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", | |
5e30a07d HR |
1243 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", |
1244 | [ EXTENDED_COPY ] = "EXTENDED_COPY", | |
1245 | [ ATA_PASSTHROUGH ] = "ATA_PASSTHROUGH", | |
1246 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", | |
1247 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", | |
1248 | [ READ_16 ] = "READ_16", | |
1249 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", | |
1250 | [ WRITE_16 ] = "WRITE_16", | |
1251 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", | |
1252 | [ VERIFY_16 ] = "VERIFY_16", | |
00a01ad4 PB |
1253 | [ PRE_FETCH_16 ] = "PRE_FETCH_16", |
1254 | [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16", | |
1255 | /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */ | |
5e30a07d | 1256 | [ LOCATE_16 ] = "LOCATE_16", |
00a01ad4 | 1257 | [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16", |
48bb9f53 | 1258 | /* ERASE_16 and WRITE_SAME_16 use the same operation code */ |
f6515262 | 1259 | [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16", |
5e30a07d HR |
1260 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", |
1261 | [ REPORT_LUNS ] = "REPORT_LUNS", | |
1262 | [ BLANK ] = "BLANK", | |
ec766865 | 1263 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", |
5e30a07d | 1264 | [ LOAD_UNLOAD ] = "LOAD_UNLOAD", |
ec766865 GH |
1265 | [ READ_12 ] = "READ_12", |
1266 | [ WRITE_12 ] = "WRITE_12", | |
00a01ad4 PB |
1267 | [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE", |
1268 | /* ERASE_12 and GET_PERFORMANCE use the same operation code */ | |
f6515262 | 1269 | [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12", |
ec766865 | 1270 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", |
5e30a07d | 1271 | [ VERIFY_12 ] = "VERIFY_12", |
ec766865 GH |
1272 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", |
1273 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", | |
1274 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", | |
1275 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", | |
00a01ad4 PB |
1276 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING", |
1277 | /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */ | |
1278 | [ READ_CD ] = "READ_CD", | |
5e30a07d | 1279 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", |
00a01ad4 PB |
1280 | [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE", |
1281 | [ RESERVE_TRACK ] = "RESERVE_TRACK", | |
1282 | [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET", | |
1283 | [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE", | |
ec766865 | 1284 | [ SET_CD_SPEED ] = "SET_CD_SPEED", |
00a01ad4 PB |
1285 | [ SET_READ_AHEAD ] = "SET_READ_AHEAD", |
1286 | [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE", | |
1287 | [ MECHANISM_STATUS ] = "MECHANISM_STATUS", | |
ec766865 GH |
1288 | }; |
1289 | ||
1290 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) | |
1291 | return "*UNKNOWN*"; | |
1292 | return names[cmd]; | |
1293 | } | |
1294 | ||
ad2d30f7 PB |
1295 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1296 | { | |
1297 | req->refcount++; | |
1298 | return req; | |
1299 | } | |
1300 | ||
1301 | void scsi_req_unref(SCSIRequest *req) | |
1302 | { | |
68bd348a | 1303 | assert(req->refcount > 0); |
ad2d30f7 | 1304 | if (--req->refcount == 0) { |
12010e7b PB |
1305 | if (req->ops->free_req) { |
1306 | req->ops->free_req(req); | |
ad2d30f7 | 1307 | } |
7267c094 | 1308 | g_free(req); |
ad2d30f7 PB |
1309 | } |
1310 | } | |
1311 | ||
ad3376cc PB |
1312 | /* Tell the device that we finished processing this chunk of I/O. It |
1313 | will start the next chunk or complete the command. */ | |
1314 | void scsi_req_continue(SCSIRequest *req) | |
1315 | { | |
1316 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); | |
1317 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1318 | req->ops->write_data(req); |
ad3376cc | 1319 | } else { |
12010e7b | 1320 | req->ops->read_data(req); |
ad3376cc PB |
1321 | } |
1322 | } | |
1323 | ||
ab9adc88 PB |
1324 | /* Called by the devices when data is ready for the HBA. The HBA should |
1325 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1326 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1327 | void scsi_req_data(SCSIRequest *req, int len) |
1328 | { | |
3d5aba97 | 1329 | uint8_t *buf; |
e88c591d PB |
1330 | if (req->io_canceled) { |
1331 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1332 | return; |
e88c591d | 1333 | } |
01e95455 PB |
1334 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1335 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1336 | if (!req->sg) { |
1337 | req->resid -= len; | |
1338 | req->bus->info->transfer_data(req, len); | |
1339 | return; | |
1340 | } | |
1341 | ||
1342 | /* If the device calls scsi_req_data and the HBA specified a | |
1343 | * scatter/gather list, the transfer has to happen in a single | |
1344 | * step. */ | |
1345 | assert(!req->dma_started); | |
1346 | req->dma_started = true; | |
1347 | ||
1348 | buf = scsi_req_get_buf(req); | |
1349 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1350 | req->resid = dma_buf_read(buf, len, req->sg); | |
1351 | } else { | |
1352 | req->resid = dma_buf_write(buf, len, req->sg); | |
1353 | } | |
1354 | scsi_req_continue(req); | |
ab9adc88 PB |
1355 | } |
1356 | ||
ec766865 GH |
1357 | void scsi_req_print(SCSIRequest *req) |
1358 | { | |
1359 | FILE *fp = stderr; | |
1360 | int i; | |
1361 | ||
1362 | fprintf(fp, "[%s id=%d] %s", | |
1363 | req->dev->qdev.parent_bus->name, | |
1364 | req->dev->id, | |
1365 | scsi_command_name(req->cmd.buf[0])); | |
1366 | for (i = 1; i < req->cmd.len; i++) { | |
1367 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1368 | } | |
1369 | switch (req->cmd.mode) { | |
1370 | case SCSI_XFER_NONE: | |
1371 | fprintf(fp, " - none\n"); | |
1372 | break; | |
1373 | case SCSI_XFER_FROM_DEV: | |
1374 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1375 | break; | |
1376 | case SCSI_XFER_TO_DEV: | |
1377 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1378 | break; | |
1379 | default: | |
1380 | fprintf(fp, " - Oops\n"); | |
1381 | break; | |
1382 | } | |
1383 | } | |
1384 | ||
682a9b21 | 1385 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1386 | { |
682a9b21 PB |
1387 | assert(req->status == -1); |
1388 | req->status = status; | |
b45ef674 PB |
1389 | |
1390 | assert(req->sense_len < sizeof(req->sense)); | |
1391 | if (status == GOOD) { | |
1392 | req->sense_len = 0; | |
1393 | } | |
1394 | ||
1395 | if (req->sense_len) { | |
1396 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1397 | req->dev->sense_len = req->sense_len; |
1398 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1399 | } else { | |
1400 | req->dev->sense_len = 0; | |
1401 | req->dev->sense_is_ua = false; | |
b45ef674 | 1402 | } |
b45ef674 | 1403 | |
6dc06f08 PB |
1404 | /* |
1405 | * Unit attention state is now stored in the device's sense buffer | |
1406 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1407 | * flags. | |
1408 | */ | |
1409 | scsi_clear_unit_attention(req); | |
1410 | ||
ad2d30f7 | 1411 | scsi_req_ref(req); |
e8637c90 | 1412 | scsi_req_dequeue(req); |
01e95455 | 1413 | req->bus->info->complete(req, req->status, req->resid); |
ad2d30f7 | 1414 | scsi_req_unref(req); |
ed3a34a3 | 1415 | } |
db07c0f8 | 1416 | |
94d3f98a PB |
1417 | void scsi_req_cancel(SCSIRequest *req) |
1418 | { | |
e88c591d PB |
1419 | if (!req->enqueued) { |
1420 | return; | |
94d3f98a PB |
1421 | } |
1422 | scsi_req_ref(req); | |
1423 | scsi_req_dequeue(req); | |
e88c591d PB |
1424 | req->io_canceled = true; |
1425 | if (req->ops->cancel_io) { | |
1426 | req->ops->cancel_io(req); | |
1427 | } | |
afd4030c PB |
1428 | if (req->bus->info->cancel) { |
1429 | req->bus->info->cancel(req); | |
94d3f98a PB |
1430 | } |
1431 | scsi_req_unref(req); | |
1432 | } | |
1433 | ||
19d110ab PB |
1434 | void scsi_req_abort(SCSIRequest *req, int status) |
1435 | { | |
e88c591d PB |
1436 | if (!req->enqueued) { |
1437 | return; | |
1438 | } | |
1439 | scsi_req_ref(req); | |
1440 | scsi_req_dequeue(req); | |
1441 | req->io_canceled = true; | |
12010e7b PB |
1442 | if (req->ops->cancel_io) { |
1443 | req->ops->cancel_io(req); | |
19d110ab | 1444 | } |
682a9b21 | 1445 | scsi_req_complete(req, status); |
e88c591d | 1446 | scsi_req_unref(req); |
19d110ab PB |
1447 | } |
1448 | ||
c7b48872 | 1449 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1450 | { |
1451 | SCSIRequest *req; | |
1452 | ||
1453 | while (!QTAILQ_EMPTY(&sdev->requests)) { | |
1454 | req = QTAILQ_FIRST(&sdev->requests); | |
94d3f98a | 1455 | scsi_req_cancel(req); |
c557e889 | 1456 | } |
c7b48872 | 1457 | sdev->unit_attention = sense; |
c557e889 PB |
1458 | } |
1459 | ||
baa1bd89 PB |
1460 | static char *scsibus_get_dev_path(DeviceState *dev) |
1461 | { | |
1462 | SCSIDevice *d = DO_UPCAST(SCSIDevice, qdev, dev); | |
1463 | DeviceState *hba = dev->parent_bus->parent; | |
09e5ab63 | 1464 | char *id; |
b7c8c35f | 1465 | char *path; |
baa1bd89 | 1466 | |
09e5ab63 | 1467 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1468 | if (id) { |
b7c8c35f | 1469 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1470 | } else { |
b7c8c35f | 1471 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1472 | } |
b7c8c35f PB |
1473 | g_free(id); |
1474 | return path; | |
baa1bd89 PB |
1475 | } |
1476 | ||
db07c0f8 GN |
1477 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1478 | { | |
b9eea3e6 | 1479 | SCSIDevice *d = SCSI_DEVICE(dev); |
db07c0f8 | 1480 | char path[100]; |
db07c0f8 | 1481 | |
795928f6 PB |
1482 | snprintf(path, sizeof(path), "channel@%x/%s@%x,%x", d->channel, |
1483 | qdev_fw_name(dev), d->id, d->lun); | |
db07c0f8 | 1484 | |
f48a7a6e PB |
1485 | return strdup(path); |
1486 | } | |
1487 | ||
0d3545e7 | 1488 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) |
f48a7a6e PB |
1489 | { |
1490 | DeviceState *qdev; | |
1491 | SCSIDevice *target_dev = NULL; | |
db07c0f8 | 1492 | |
f48a7a6e | 1493 | QTAILQ_FOREACH_REVERSE(qdev, &bus->qbus.children, ChildrenHead, sibling) { |
b9eea3e6 | 1494 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
db07c0f8 | 1495 | |
0d3545e7 | 1496 | if (dev->channel == channel && dev->id == id) { |
f48a7a6e PB |
1497 | if (dev->lun == lun) { |
1498 | return dev; | |
1499 | } | |
1500 | target_dev = dev; | |
1501 | } | |
1502 | } | |
1503 | return target_dev; | |
db07c0f8 | 1504 | } |
b9eea3e6 | 1505 | |
63f740dd PB |
1506 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1507 | ||
1508 | static void put_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1509 | { | |
1510 | SCSIDevice *s = pv; | |
1511 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1512 | SCSIRequest *req; | |
1513 | ||
1514 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1515 | assert(!req->io_canceled); | |
1516 | assert(req->status == -1); | |
63f740dd PB |
1517 | assert(req->enqueued); |
1518 | ||
18eef3bc | 1519 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
1520 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
1521 | qemu_put_be32s(f, &req->tag); | |
1522 | qemu_put_be32s(f, &req->lun); | |
1523 | if (bus->info->save_request) { | |
1524 | bus->info->save_request(f, req); | |
1525 | } | |
1526 | if (req->ops->save_request) { | |
1527 | req->ops->save_request(f, req); | |
1528 | } | |
1529 | } | |
1530 | qemu_put_sbyte(f, 0); | |
1531 | } | |
1532 | ||
1533 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1534 | { | |
1535 | SCSIDevice *s = pv; | |
1536 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 1537 | int8_t sbyte; |
63f740dd | 1538 | |
18eef3bc | 1539 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
1540 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
1541 | uint32_t tag; | |
1542 | uint32_t lun; | |
1543 | SCSIRequest *req; | |
1544 | ||
1545 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1546 | qemu_get_be32s(f, &tag); | |
1547 | qemu_get_be32s(f, &lun); | |
1548 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
18eef3bc | 1549 | req->retry = (sbyte == 1); |
63f740dd PB |
1550 | if (bus->info->load_request) { |
1551 | req->hba_private = bus->info->load_request(f, req); | |
1552 | } | |
1553 | if (req->ops->load_request) { | |
1554 | req->ops->load_request(f, req); | |
1555 | } | |
1556 | ||
1557 | /* Just restart it later. */ | |
63f740dd PB |
1558 | scsi_req_enqueue_internal(req); |
1559 | ||
1560 | /* At this point, the request will be kept alive by the reference | |
1561 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1562 | * The HBA of course will add its own reference in the load_request | |
1563 | * callback if it needs to hold on the SCSIRequest. | |
1564 | */ | |
1565 | scsi_req_unref(req); | |
1566 | } | |
1567 | ||
1568 | return 0; | |
1569 | } | |
1570 | ||
12badfc2 | 1571 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
1572 | .name = "scsi-requests", |
1573 | .get = get_scsi_requests, | |
1574 | .put = put_scsi_requests, | |
1575 | }; | |
1576 | ||
1577 | const VMStateDescription vmstate_scsi_device = { | |
1578 | .name = "SCSIDevice", | |
1579 | .version_id = 1, | |
1580 | .minimum_version_id = 1, | |
1581 | .minimum_version_id_old = 1, | |
1582 | .fields = (VMStateField[]) { | |
1583 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1584 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1585 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1586 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
1587 | VMSTATE_UINT8_ARRAY(sense, SCSIDevice, SCSI_SENSE_BUF_SIZE), | |
1588 | VMSTATE_UINT32(sense_len, SCSIDevice), | |
1589 | { | |
1590 | .name = "requests", | |
1591 | .version_id = 0, | |
1592 | .field_exists = NULL, | |
1593 | .size = 0, /* ouch */ | |
1594 | .info = &vmstate_info_scsi_requests, | |
1595 | .flags = VMS_SINGLE, | |
1596 | .offset = 0, | |
1597 | }, | |
1598 | VMSTATE_END_OF_LIST() | |
1599 | } | |
1600 | }; | |
1601 | ||
39bffca2 AL |
1602 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
1603 | { | |
1604 | DeviceClass *k = DEVICE_CLASS(klass); | |
0d936928 | 1605 | k->bus_type = TYPE_SCSI_BUS; |
39bffca2 AL |
1606 | k->init = scsi_qdev_init; |
1607 | k->unplug = qdev_simple_unplug_cb; | |
1608 | k->exit = scsi_qdev_exit; | |
bce54474 | 1609 | k->props = scsi_props; |
39bffca2 AL |
1610 | } |
1611 | ||
b9eea3e6 AL |
1612 | static TypeInfo scsi_device_type_info = { |
1613 | .name = TYPE_SCSI_DEVICE, | |
1614 | .parent = TYPE_DEVICE, | |
1615 | .instance_size = sizeof(SCSIDevice), | |
1616 | .abstract = true, | |
1617 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 1618 | .class_init = scsi_device_class_init, |
b9eea3e6 AL |
1619 | }; |
1620 | ||
83f7d43a | 1621 | static void scsi_register_types(void) |
b9eea3e6 | 1622 | { |
0d936928 | 1623 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
1624 | type_register_static(&scsi_device_type_info); |
1625 | } | |
1626 | ||
83f7d43a | 1627 | type_init(scsi_register_types) |