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Commit | Line | Data |
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83c9f4ca | 1 | #include "hw/hw.h" |
1de7afc9 | 2 | #include "qemu/error-report.h" |
0d09e41a PB |
3 | #include "hw/scsi/scsi.h" |
4 | #include "block/scsi.h" | |
83c9f4ca | 5 | #include "hw/qdev.h" |
9c17d615 | 6 | #include "sysemu/blockdev.h" |
5138efec | 7 | #include "trace.h" |
9c17d615 | 8 | #include "sysemu/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. */ |
11fc853c KF |
75 | void scsi_bus_new(SCSIBus *bus, DeviceState *host, const SCSIBusInfo *info, |
76 | const char *bus_name) | |
d52affa7 | 77 | { |
11fc853c | 78 | qbus_create_inplace(&bus->qbus, TYPE_SCSI_BUS, host, bus_name); |
d52affa7 | 79 | bus->busnr = next_scsi_bus++; |
afd4030c | 80 | bus->info = info; |
cb23117b | 81 | bus->qbus.allow_hotplug = 1; |
d52affa7 GH |
82 | } |
83 | ||
71544d30 PB |
84 | static void scsi_dma_restart_bh(void *opaque) |
85 | { | |
86 | SCSIDevice *s = opaque; | |
87 | SCSIRequest *req, *next; | |
88 | ||
89 | qemu_bh_delete(s->bh); | |
90 | s->bh = NULL; | |
91 | ||
92 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { | |
93 | scsi_req_ref(req); | |
94 | if (req->retry) { | |
95 | req->retry = false; | |
96 | switch (req->cmd.mode) { | |
97 | case SCSI_XFER_FROM_DEV: | |
98 | case SCSI_XFER_TO_DEV: | |
99 | scsi_req_continue(req); | |
100 | break; | |
101 | case SCSI_XFER_NONE: | |
5d0d2467 | 102 | assert(!req->sg); |
71544d30 PB |
103 | scsi_req_dequeue(req); |
104 | scsi_req_enqueue(req); | |
105 | break; | |
106 | } | |
107 | } | |
108 | scsi_req_unref(req); | |
109 | } | |
110 | } | |
111 | ||
112 | void scsi_req_retry(SCSIRequest *req) | |
113 | { | |
114 | /* No need to save a reference, because scsi_dma_restart_bh just | |
115 | * looks at the request list. */ | |
116 | req->retry = true; | |
117 | } | |
118 | ||
119 | static void scsi_dma_restart_cb(void *opaque, int running, RunState state) | |
120 | { | |
121 | SCSIDevice *s = opaque; | |
122 | ||
123 | if (!running) { | |
124 | return; | |
125 | } | |
126 | if (!s->bh) { | |
127 | s->bh = qemu_bh_new(scsi_dma_restart_bh, s); | |
128 | qemu_bh_schedule(s->bh); | |
129 | } | |
130 | } | |
131 | ||
d307af79 | 132 | static int scsi_qdev_init(DeviceState *qdev) |
d52affa7 | 133 | { |
b9eea3e6 | 134 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
d52affa7 | 135 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
7e0380b9 | 136 | SCSIDevice *d; |
01985dcf | 137 | int rc = -1; |
d52affa7 | 138 | |
0d3545e7 PB |
139 | if (dev->channel > bus->info->max_channel) { |
140 | error_report("bad scsi channel id: %d", dev->channel); | |
141 | goto err; | |
142 | } | |
7e0380b9 | 143 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
1ecda02b | 144 | error_report("bad scsi device id: %d", dev->id); |
d52affa7 GH |
145 | goto err; |
146 | } | |
d3d250bd PB |
147 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { |
148 | error_report("bad scsi device lun: %d", dev->lun); | |
149 | goto err; | |
150 | } | |
d52affa7 | 151 | |
7e0380b9 PB |
152 | if (dev->id == -1) { |
153 | int id = -1; | |
154 | if (dev->lun == -1) { | |
155 | dev->lun = 0; | |
156 | } | |
157 | do { | |
0d3545e7 | 158 | d = scsi_device_find(bus, dev->channel, ++id, dev->lun); |
d3d250bd PB |
159 | } while (d && d->lun == dev->lun && id < bus->info->max_target); |
160 | if (d && d->lun == dev->lun) { | |
7e0380b9 PB |
161 | error_report("no free target"); |
162 | goto err; | |
163 | } | |
164 | dev->id = id; | |
165 | } else if (dev->lun == -1) { | |
166 | int lun = -1; | |
167 | do { | |
0d3545e7 | 168 | d = scsi_device_find(bus, dev->channel, dev->id, ++lun); |
7e0380b9 | 169 | } while (d && d->lun == lun && lun < bus->info->max_lun); |
d3d250bd | 170 | if (d && d->lun == lun) { |
7e0380b9 PB |
171 | error_report("no free lun"); |
172 | goto err; | |
173 | } | |
174 | dev->lun = lun; | |
175 | } else { | |
0d3545e7 | 176 | d = scsi_device_find(bus, dev->channel, dev->id, dev->lun); |
d3d250bd PB |
177 | assert(d); |
178 | if (d->lun == dev->lun && dev != d) { | |
7e0380b9 PB |
179 | qdev_free(&d->qdev); |
180 | } | |
d52affa7 | 181 | } |
d52affa7 | 182 | |
9af99d98 | 183 | QTAILQ_INIT(&dev->requests); |
b9eea3e6 | 184 | rc = scsi_device_init(dev); |
71544d30 PB |
185 | if (rc == 0) { |
186 | dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb, | |
187 | dev); | |
188 | } | |
d52affa7 | 189 | |
350e6e41 CM |
190 | if (bus->info->hotplug) { |
191 | bus->info->hotplug(bus, dev); | |
192 | } | |
193 | ||
d52affa7 | 194 | err: |
01985dcf GH |
195 | return rc; |
196 | } | |
197 | ||
198 | static int scsi_qdev_exit(DeviceState *qdev) | |
199 | { | |
b9eea3e6 | 200 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 201 | |
71544d30 PB |
202 | if (dev->vmsentry) { |
203 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
204 | } | |
b9eea3e6 | 205 | scsi_device_destroy(dev); |
01985dcf | 206 | return 0; |
d52affa7 GH |
207 | } |
208 | ||
d52affa7 | 209 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
2d1fd261 | 210 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, |
76534da7 KW |
211 | int unit, bool removable, int bootindex, |
212 | const char *serial) | |
d52affa7 GH |
213 | { |
214 | const char *driver; | |
215 | DeviceState *dev; | |
216 | ||
f8b6cc00 | 217 | driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk"; |
d52affa7 GH |
218 | dev = qdev_create(&bus->qbus, driver); |
219 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
ce4e7e46 PB |
220 | if (bootindex >= 0) { |
221 | qdev_prop_set_int32(dev, "bootindex", bootindex); | |
222 | } | |
89bfe000 | 223 | if (object_property_find(OBJECT(dev), "removable", NULL)) { |
2d1fd261 SH |
224 | qdev_prop_set_bit(dev, "removable", removable); |
225 | } | |
76534da7 KW |
226 | if (serial) { |
227 | qdev_prop_set_string(dev, "serial", serial); | |
228 | } | |
18846dee MA |
229 | if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) { |
230 | qdev_free(dev); | |
231 | return NULL; | |
232 | } | |
33e66b86 MA |
233 | if (qdev_init(dev) < 0) |
234 | return NULL; | |
b9eea3e6 | 235 | return SCSI_DEVICE(dev); |
d52affa7 GH |
236 | } |
237 | ||
fa66b909 | 238 | int scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 239 | { |
42e766a2 | 240 | Location loc; |
d52affa7 | 241 | DriveInfo *dinfo; |
fa66b909 | 242 | int res = 0, unit; |
d52affa7 | 243 | |
42e766a2 | 244 | loc_push_none(&loc); |
d3d250bd | 245 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
246 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
247 | if (dinfo == NULL) { | |
248 | continue; | |
249 | } | |
42e766a2 | 250 | qemu_opts_loc_restore(dinfo->opts); |
76534da7 | 251 | if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false, -1, NULL)) { |
fa66b909 MA |
252 | res = -1; |
253 | break; | |
254 | } | |
d52affa7 | 255 | } |
42e766a2 | 256 | loc_pop(&loc); |
fa66b909 | 257 | return res; |
d52affa7 | 258 | } |
89b08ae1 | 259 | |
12a08998 PB |
260 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
261 | { | |
262 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
263 | scsi_req_complete(req, CHECK_CONDITION); | |
264 | return 0; | |
265 | } | |
266 | ||
267 | static const struct SCSIReqOps reqops_invalid_field = { | |
268 | .size = sizeof(SCSIRequest), | |
269 | .send_command = scsi_invalid_field | |
270 | }; | |
271 | ||
afa46c46 PB |
272 | /* SCSIReqOps implementation for invalid commands. */ |
273 | ||
274 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
275 | { | |
276 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
277 | scsi_req_complete(req, CHECK_CONDITION); | |
278 | return 0; | |
279 | } | |
280 | ||
adcf2754 | 281 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
282 | .size = sizeof(SCSIRequest), |
283 | .send_command = scsi_invalid_command | |
284 | }; | |
285 | ||
6dc06f08 PB |
286 | /* SCSIReqOps implementation for unit attention conditions. */ |
287 | ||
288 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
289 | { | |
0bf8264e | 290 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { |
6dc06f08 PB |
291 | scsi_req_build_sense(req, req->dev->unit_attention); |
292 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
293 | scsi_req_build_sense(req, req->bus->unit_attention); | |
294 | } | |
295 | scsi_req_complete(req, CHECK_CONDITION); | |
296 | return 0; | |
297 | } | |
298 | ||
adcf2754 | 299 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
300 | .size = sizeof(SCSIRequest), |
301 | .send_command = scsi_unit_attention | |
302 | }; | |
303 | ||
fdaef069 PB |
304 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
305 | an invalid LUN. */ | |
306 | ||
307 | typedef struct SCSITargetReq SCSITargetReq; | |
308 | ||
309 | struct SCSITargetReq { | |
310 | SCSIRequest req; | |
311 | int len; | |
ba74307c | 312 | uint8_t buf[2056]; |
fdaef069 PB |
313 | }; |
314 | ||
315 | static void store_lun(uint8_t *outbuf, int lun) | |
316 | { | |
317 | if (lun < 256) { | |
318 | outbuf[1] = lun; | |
319 | return; | |
320 | } | |
321 | outbuf[1] = (lun & 255); | |
322 | outbuf[0] = (lun >> 8) | 0x40; | |
323 | } | |
324 | ||
325 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
326 | { | |
0866aca1 | 327 | BusChild *kid; |
ba74307c | 328 | int i, len, n; |
0d3545e7 | 329 | int channel, id; |
ba74307c PB |
330 | bool found_lun0; |
331 | ||
fdaef069 PB |
332 | if (r->req.cmd.xfer < 16) { |
333 | return false; | |
334 | } | |
335 | if (r->req.cmd.buf[2] > 2) { | |
336 | return false; | |
337 | } | |
0d3545e7 | 338 | channel = r->req.dev->channel; |
ba74307c PB |
339 | id = r->req.dev->id; |
340 | found_lun0 = false; | |
341 | n = 0; | |
0866aca1 AL |
342 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
343 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 344 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 345 | |
0d3545e7 | 346 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
347 | if (dev->lun == 0) { |
348 | found_lun0 = true; | |
349 | } | |
350 | n += 8; | |
351 | } | |
352 | } | |
353 | if (!found_lun0) { | |
354 | n += 8; | |
355 | } | |
356 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
357 | if (len > sizeof(r->buf)) { | |
358 | /* TODO: > 256 LUNs? */ | |
359 | return false; | |
360 | } | |
361 | ||
fdaef069 | 362 | memset(r->buf, 0, len); |
ba74307c PB |
363 | stl_be_p(&r->buf, n); |
364 | i = found_lun0 ? 8 : 16; | |
0866aca1 AL |
365 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
366 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 367 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 368 | |
0d3545e7 | 369 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
370 | store_lun(&r->buf[i], dev->lun); |
371 | i += 8; | |
372 | } | |
fdaef069 | 373 | } |
ba74307c PB |
374 | assert(i == n + 8); |
375 | r->len = len; | |
fdaef069 PB |
376 | return true; |
377 | } | |
378 | ||
379 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
380 | { | |
381 | assert(r->req.dev->lun != r->req.lun); | |
382 | if (r->req.cmd.buf[1] & 0x2) { | |
383 | /* Command support data - optional, not implemented */ | |
384 | return false; | |
385 | } | |
386 | ||
387 | if (r->req.cmd.buf[1] & 0x1) { | |
388 | /* Vital product data */ | |
389 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
390 | r->buf[r->len++] = page_code ; /* this page */ |
391 | r->buf[r->len++] = 0x00; | |
392 | ||
393 | switch (page_code) { | |
394 | case 0x00: /* Supported page codes, mandatory */ | |
395 | { | |
396 | int pages; | |
397 | pages = r->len++; | |
398 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
399 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
400 | break; | |
401 | } | |
402 | default: | |
403 | return false; | |
404 | } | |
405 | /* done with EVPD */ | |
406 | assert(r->len < sizeof(r->buf)); | |
407 | r->len = MIN(r->req.cmd.xfer, r->len); | |
408 | return true; | |
409 | } | |
410 | ||
411 | /* Standard INQUIRY data */ | |
412 | if (r->req.cmd.buf[2] != 0) { | |
413 | return false; | |
414 | } | |
415 | ||
416 | /* PAGE CODE == 0 */ | |
fdaef069 PB |
417 | r->len = MIN(r->req.cmd.xfer, 36); |
418 | memset(r->buf, 0, r->len); | |
419 | if (r->req.lun != 0) { | |
420 | r->buf[0] = TYPE_NO_LUN; | |
421 | } else { | |
422 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
423 | r->buf[2] = 5; /* Version */ | |
424 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
425 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 426 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
427 | memcpy(&r->buf[8], "QEMU ", 8); |
428 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
93bfef4c | 429 | pstrcpy((char *) &r->buf[32], 4, qemu_get_version()); |
fdaef069 PB |
430 | } |
431 | return true; | |
432 | } | |
433 | ||
434 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) | |
435 | { | |
436 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
437 | ||
438 | switch (buf[0]) { | |
439 | case REPORT_LUNS: | |
440 | if (!scsi_target_emulate_report_luns(r)) { | |
441 | goto illegal_request; | |
442 | } | |
443 | break; | |
444 | case INQUIRY: | |
445 | if (!scsi_target_emulate_inquiry(r)) { | |
446 | goto illegal_request; | |
447 | } | |
448 | break; | |
739df215 | 449 | case REQUEST_SENSE: |
8b2a04ee PB |
450 | r->len = scsi_device_get_sense(r->req.dev, r->buf, |
451 | MIN(req->cmd.xfer, sizeof r->buf), | |
739df215 | 452 | (req->cmd.buf[1] & 1) == 0); |
3653d8c4 | 453 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 454 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
455 | r->req.dev->sense_len = 0; |
456 | r->req.dev->sense_is_ua = false; | |
457 | } | |
739df215 | 458 | break; |
fdaef069 PB |
459 | default: |
460 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); | |
461 | scsi_req_complete(req, CHECK_CONDITION); | |
462 | return 0; | |
463 | illegal_request: | |
464 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
465 | scsi_req_complete(req, CHECK_CONDITION); | |
466 | return 0; | |
467 | } | |
468 | ||
469 | if (!r->len) { | |
470 | scsi_req_complete(req, GOOD); | |
471 | } | |
472 | return r->len; | |
473 | } | |
474 | ||
475 | static void scsi_target_read_data(SCSIRequest *req) | |
476 | { | |
477 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
478 | uint32_t n; | |
479 | ||
480 | n = r->len; | |
481 | if (n > 0) { | |
482 | r->len = 0; | |
483 | scsi_req_data(&r->req, n); | |
484 | } else { | |
485 | scsi_req_complete(&r->req, GOOD); | |
486 | } | |
487 | } | |
488 | ||
489 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
490 | { | |
491 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
492 | ||
493 | return r->buf; | |
494 | } | |
495 | ||
adcf2754 | 496 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
497 | .size = sizeof(SCSITargetReq), |
498 | .send_command = scsi_target_send_command, | |
499 | .read_data = scsi_target_read_data, | |
500 | .get_buf = scsi_target_get_buf, | |
501 | }; | |
502 | ||
503 | ||
adcf2754 PB |
504 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
505 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
506 | { |
507 | SCSIRequest *req; | |
508 | ||
7267c094 | 509 | req = g_malloc0(reqops->size); |
5c6c0e51 | 510 | req->refcount = 1; |
89b08ae1 GH |
511 | req->bus = scsi_bus_from_device(d); |
512 | req->dev = d; | |
513 | req->tag = tag; | |
514 | req->lun = lun; | |
c5bf71a9 | 515 | req->hba_private = hba_private; |
ed3a34a3 | 516 | req->status = -1; |
b45ef674 | 517 | req->sense_len = 0; |
8dbd4574 | 518 | req->ops = reqops; |
5138efec | 519 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
520 | return req; |
521 | } | |
522 | ||
c5bf71a9 | 523 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 524 | uint8_t *buf, void *hba_private) |
43a2b339 | 525 | { |
6dc06f08 | 526 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
c39ce112 | 527 | SCSIRequest *req; |
afa46c46 PB |
528 | SCSICommand cmd; |
529 | ||
530 | if (scsi_req_parse(&cmd, d, buf) != 0) { | |
531 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); | |
532 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
533 | } else { | |
534 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], | |
535 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 536 | if (cmd.lba != -1) { |
afa46c46 PB |
537 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
538 | cmd.lba); | |
539 | } | |
fdaef069 | 540 | |
12a08998 PB |
541 | if (cmd.xfer > INT32_MAX) { |
542 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
543 | } else if ((d->unit_attention.key == UNIT_ATTENTION || | |
544 | bus->unit_attention.key == UNIT_ATTENTION) && | |
545 | (buf[0] != INQUIRY && | |
546 | buf[0] != REPORT_LUNS && | |
547 | buf[0] != GET_CONFIGURATION && | |
548 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
549 | ||
550 | /* | |
551 | * If we already have a pending unit attention condition, | |
552 | * report this one before triggering another one. | |
553 | */ | |
554 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
6dc06f08 PB |
555 | req = scsi_req_alloc(&reqops_unit_attention, d, tag, lun, |
556 | hba_private); | |
557 | } else if (lun != d->lun || | |
e5f38ff6 PB |
558 | buf[0] == REPORT_LUNS || |
559 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
fdaef069 PB |
560 | req = scsi_req_alloc(&reqops_target_command, d, tag, lun, |
561 | hba_private); | |
562 | } else { | |
b9eea3e6 | 563 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 564 | } |
afa46c46 PB |
565 | } |
566 | ||
567 | req->cmd = cmd; | |
01e95455 PB |
568 | req->resid = req->cmd.xfer; |
569 | ||
98254542 PB |
570 | switch (buf[0]) { |
571 | case INQUIRY: | |
572 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
573 | break; | |
574 | case TEST_UNIT_READY: | |
575 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
576 | break; | |
577 | case REPORT_LUNS: | |
578 | trace_scsi_report_luns(d->id, lun, tag); | |
579 | break; | |
580 | case REQUEST_SENSE: | |
581 | trace_scsi_request_sense(d->id, lun, tag); | |
582 | break; | |
583 | default: | |
584 | break; | |
585 | } | |
586 | ||
c39ce112 | 587 | return req; |
43a2b339 PB |
588 | } |
589 | ||
0c34459b PB |
590 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
591 | { | |
12010e7b | 592 | return req->ops->get_buf(req); |
0c34459b PB |
593 | } |
594 | ||
6dc06f08 PB |
595 | static void scsi_clear_unit_attention(SCSIRequest *req) |
596 | { | |
597 | SCSISense *ua; | |
598 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
599 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
600 | return; | |
601 | } | |
602 | ||
603 | /* | |
604 | * If an INQUIRY command enters the enabled command state, | |
605 | * the device server shall [not] clear any unit attention condition; | |
606 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
607 | */ | |
608 | if (req->cmd.buf[0] == INQUIRY || | |
609 | req->cmd.buf[0] == GET_CONFIGURATION || | |
610 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
611 | return; | |
612 | } | |
613 | ||
614 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
615 | ua = &req->dev->unit_attention; | |
616 | } else { | |
617 | ua = &req->bus->unit_attention; | |
618 | } | |
619 | ||
620 | /* | |
621 | * If a REPORT LUNS command enters the enabled command state, [...] | |
622 | * the device server shall clear any pending unit attention condition | |
623 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
624 | */ | |
625 | if (req->cmd.buf[0] == REPORT_LUNS && | |
626 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
627 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
628 | return; | |
629 | } | |
630 | ||
631 | *ua = SENSE_CODE(NO_SENSE); | |
632 | } | |
633 | ||
74382217 HR |
634 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
635 | { | |
6dc06f08 PB |
636 | int ret; |
637 | ||
b45ef674 PB |
638 | assert(len >= 14); |
639 | if (!req->sense_len) { | |
74382217 HR |
640 | return 0; |
641 | } | |
6dc06f08 PB |
642 | |
643 | ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true); | |
644 | ||
645 | /* | |
646 | * FIXME: clearing unit attention conditions upon autosense should be done | |
647 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
648 | * (SAM-5, 5.14). | |
649 | * | |
650 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
651 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 652 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 653 | */ |
3653d8c4 | 654 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 655 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
656 | req->dev->sense_len = 0; |
657 | req->dev->sense_is_ua = false; | |
658 | } | |
6dc06f08 | 659 | return ret; |
b45ef674 PB |
660 | } |
661 | ||
662 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
663 | { | |
664 | return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed); | |
665 | } | |
666 | ||
667 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
668 | { | |
669 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
670 | sense.key, sense.asc, sense.ascq); | |
671 | memset(req->sense, 0, 18); | |
77e4743c | 672 | req->sense[0] = 0x70; |
b45ef674 | 673 | req->sense[2] = sense.key; |
eae31cb9 | 674 | req->sense[7] = 10; |
b45ef674 PB |
675 | req->sense[12] = sense.asc; |
676 | req->sense[13] = sense.ascq; | |
677 | req->sense_len = 18; | |
74382217 HR |
678 | } |
679 | ||
63f740dd | 680 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 681 | { |
5c6c0e51 HR |
682 | assert(!req->enqueued); |
683 | scsi_req_ref(req); | |
3d5aba97 PB |
684 | if (req->bus->info->get_sg_list) { |
685 | req->sg = req->bus->info->get_sg_list(req); | |
686 | } else { | |
687 | req->sg = NULL; | |
688 | } | |
5c6c0e51 HR |
689 | req->enqueued = true; |
690 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 691 | } |
fc4f0754 | 692 | |
63f740dd PB |
693 | int32_t scsi_req_enqueue(SCSIRequest *req) |
694 | { | |
695 | int32_t rc; | |
696 | ||
697 | assert(!req->retry); | |
698 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 699 | scsi_req_ref(req); |
c39ce112 | 700 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
701 | scsi_req_unref(req); |
702 | return rc; | |
89b08ae1 GH |
703 | } |
704 | ||
a1f0cce2 | 705 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 706 | { |
5138efec | 707 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 708 | req->retry = false; |
e8637c90 JK |
709 | if (req->enqueued) { |
710 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
711 | req->enqueued = false; | |
ad2d30f7 | 712 | scsi_req_unref(req); |
e8637c90 JK |
713 | } |
714 | } | |
715 | ||
06b86357 PB |
716 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
717 | { | |
718 | /* MMC-6, paragraph 6.7. */ | |
719 | switch (type) { | |
720 | case 0: | |
721 | if ((data_type & 3) == 0) { | |
722 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
723 | return 16 * num_desc + 8; | |
724 | } else { | |
725 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
726 | return 6 * num_desc + 8; | |
727 | } | |
728 | case 1: | |
729 | case 4: | |
730 | case 5: | |
731 | return 8 * num_desc + 8; | |
732 | case 2: | |
733 | return 2048 * num_desc + 8; | |
734 | case 3: | |
735 | return 16 * num_desc + 8; | |
736 | default: | |
737 | return 8; | |
738 | } | |
739 | } | |
740 | ||
e4b65262 CM |
741 | static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf) |
742 | { | |
743 | int byte_block = (buf[2] >> 2) & 0x1; | |
744 | int type = (buf[2] >> 4) & 0x1; | |
745 | int xfer_unit; | |
746 | ||
747 | if (byte_block) { | |
748 | if (type) { | |
749 | xfer_unit = dev->blocksize; | |
750 | } else { | |
751 | xfer_unit = 512; | |
752 | } | |
753 | } else { | |
754 | xfer_unit = 1; | |
755 | } | |
756 | ||
757 | return xfer_unit; | |
758 | } | |
759 | ||
760 | static int ata_passthrough_12_xfer_size(SCSIDevice *dev, uint8_t *buf) | |
761 | { | |
762 | int length = buf[2] & 0x3; | |
763 | int xfer; | |
764 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
765 | ||
766 | switch (length) { | |
767 | case 0: | |
768 | case 3: /* USB-specific. */ | |
d83c951c | 769 | default: |
e4b65262 CM |
770 | xfer = 0; |
771 | break; | |
772 | case 1: | |
773 | xfer = buf[3]; | |
774 | break; | |
775 | case 2: | |
776 | xfer = buf[4]; | |
777 | break; | |
778 | } | |
779 | ||
780 | return xfer * unit; | |
781 | } | |
782 | ||
783 | static int ata_passthrough_16_xfer_size(SCSIDevice *dev, uint8_t *buf) | |
784 | { | |
785 | int extend = buf[1] & 0x1; | |
786 | int length = buf[2] & 0x3; | |
787 | int xfer; | |
788 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
789 | ||
790 | switch (length) { | |
791 | case 0: | |
792 | case 3: /* USB-specific. */ | |
d83c951c | 793 | default: |
e4b65262 CM |
794 | xfer = 0; |
795 | break; | |
796 | case 1: | |
797 | xfer = buf[4]; | |
798 | xfer |= (extend ? buf[3] << 8 : 0); | |
799 | break; | |
800 | case 2: | |
801 | xfer = buf[6]; | |
802 | xfer |= (extend ? buf[5] << 8 : 0); | |
803 | break; | |
804 | } | |
805 | ||
806 | return xfer * unit; | |
807 | } | |
808 | ||
bb729f75 PB |
809 | uint32_t scsi_data_cdb_length(uint8_t *buf) |
810 | { | |
811 | if ((buf[0] >> 5) == 0 && buf[4] == 0) { | |
812 | return 256; | |
813 | } else { | |
814 | return scsi_cdb_length(buf); | |
815 | } | |
816 | } | |
817 | ||
818 | uint32_t scsi_cdb_length(uint8_t *buf) | |
2ec749cb | 819 | { |
2599aece | 820 | switch (buf[0] >> 5) { |
2ec749cb | 821 | case 0: |
bb729f75 | 822 | return buf[4]; |
2ec749cb GH |
823 | break; |
824 | case 1: | |
825 | case 2: | |
bb729f75 | 826 | return lduw_be_p(&buf[7]); |
2ec749cb GH |
827 | break; |
828 | case 4: | |
bb729f75 | 829 | return ldl_be_p(&buf[10]) & 0xffffffffULL; |
2ec749cb GH |
830 | break; |
831 | case 5: | |
bb729f75 | 832 | return ldl_be_p(&buf[6]) & 0xffffffffULL; |
2ec749cb GH |
833 | break; |
834 | default: | |
835 | return -1; | |
836 | } | |
bb729f75 | 837 | } |
2ec749cb | 838 | |
bb729f75 PB |
839 | static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
840 | { | |
841 | cmd->xfer = scsi_cdb_length(buf); | |
2599aece | 842 | switch (buf[0]) { |
2ec749cb | 843 | case TEST_UNIT_READY: |
5e30a07d | 844 | case REWIND: |
2ec749cb | 845 | case START_STOP: |
00a01ad4 | 846 | case SET_CAPACITY: |
2ec749cb | 847 | case WRITE_FILEMARKS: |
06b86357 | 848 | case WRITE_FILEMARKS_16: |
2ec749cb | 849 | case SPACE: |
a5e3d9ef BK |
850 | case RESERVE: |
851 | case RELEASE: | |
2ec749cb GH |
852 | case ERASE: |
853 | case ALLOW_MEDIUM_REMOVAL: | |
5e30a07d | 854 | case VERIFY_10: |
2ec749cb GH |
855 | case SEEK_10: |
856 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
857 | case SYNCHRONIZE_CACHE_16: |
858 | case LOCATE_16: | |
2ec749cb | 859 | case LOCK_UNLOCK_CACHE: |
2ec749cb GH |
860 | case SET_CD_SPEED: |
861 | case SET_LIMITS: | |
5e30a07d | 862 | case WRITE_LONG_10: |
2ec749cb | 863 | case UPDATE_BLOCK: |
06b86357 PB |
864 | case RESERVE_TRACK: |
865 | case SET_READ_AHEAD: | |
866 | case PRE_FETCH: | |
867 | case PRE_FETCH_16: | |
868 | case ALLOW_OVERWRITE: | |
2599aece | 869 | cmd->xfer = 0; |
2ec749cb GH |
870 | break; |
871 | case MODE_SENSE: | |
872 | break; | |
5e30a07d | 873 | case WRITE_SAME_10: |
a5ee9085 PB |
874 | case WRITE_SAME_16: |
875 | cmd->xfer = dev->blocksize; | |
2ec749cb | 876 | break; |
5e30a07d | 877 | case READ_CAPACITY_10: |
2599aece | 878 | cmd->xfer = 8; |
2ec749cb GH |
879 | break; |
880 | case READ_BLOCK_LIMITS: | |
2599aece | 881 | cmd->xfer = 6; |
2ec749cb | 882 | break; |
2ec749cb | 883 | case SEND_VOLUME_TAG: |
06b86357 PB |
884 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
885 | if (dev->type == TYPE_ROM) { | |
886 | cmd->xfer = buf[10] | (buf[9] << 8); | |
887 | } else { | |
888 | cmd->xfer = buf[9] | (buf[8] << 8); | |
889 | } | |
2ec749cb | 890 | break; |
f62d0594 PB |
891 | case WRITE_6: |
892 | /* length 0 means 256 blocks */ | |
893 | if (cmd->xfer == 0) { | |
894 | cmd->xfer = 256; | |
895 | } | |
2ec749cb | 896 | case WRITE_10: |
5e30a07d | 897 | case WRITE_VERIFY_10: |
2ec749cb GH |
898 | case WRITE_12: |
899 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
900 | case WRITE_16: |
901 | case WRITE_VERIFY_16: | |
2599aece | 902 | cmd->xfer *= dev->blocksize; |
2ec749cb | 903 | break; |
2ec749cb GH |
904 | case READ_6: |
905 | case READ_REVERSE: | |
f62d0594 PB |
906 | /* length 0 means 256 blocks */ |
907 | if (cmd->xfer == 0) { | |
908 | cmd->xfer = 256; | |
909 | } | |
910 | case READ_10: | |
2ec749cb GH |
911 | case RECOVER_BUFFERED_DATA: |
912 | case READ_12: | |
bd536cf3 | 913 | case READ_16: |
2599aece | 914 | cmd->xfer *= dev->blocksize; |
2ec749cb | 915 | break; |
06b86357 PB |
916 | case FORMAT_UNIT: |
917 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
918 | * for block devices are restricted to the header right now. */ | |
919 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
920 | cmd->xfer = 12; | |
921 | } else { | |
922 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
923 | } | |
924 | break; | |
2ec749cb | 925 | case INQUIRY: |
06b86357 PB |
926 | case RECEIVE_DIAGNOSTIC: |
927 | case SEND_DIAGNOSTIC: | |
2599aece | 928 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 929 | break; |
06b86357 PB |
930 | case READ_CD: |
931 | case READ_BUFFER: | |
932 | case WRITE_BUFFER: | |
933 | case SEND_CUE_SHEET: | |
934 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
935 | break; | |
936 | case PERSISTENT_RESERVE_OUT: | |
937 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
938 | break; | |
939 | case ERASE_12: | |
940 | if (dev->type == TYPE_ROM) { | |
941 | /* MMC command GET PERFORMANCE. */ | |
942 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
943 | buf[10], buf[1] & 0x1f); | |
944 | } | |
945 | break; | |
946 | case MECHANISM_STATUS: | |
947 | case READ_DVD_STRUCTURE: | |
948 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
949 | case MAINTENANCE_OUT: |
950 | case MAINTENANCE_IN: | |
2599aece | 951 | if (dev->type == TYPE_ROM) { |
c7126d5b | 952 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 953 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
954 | } |
955 | break; | |
e4b65262 CM |
956 | case ATA_PASSTHROUGH_12: |
957 | if (dev->type == TYPE_ROM) { | |
958 | /* BLANK command of MMC */ | |
959 | cmd->xfer = 0; | |
960 | } else { | |
961 | cmd->xfer = ata_passthrough_12_xfer_size(dev, buf); | |
962 | } | |
963 | break; | |
964 | case ATA_PASSTHROUGH_16: | |
965 | cmd->xfer = ata_passthrough_16_xfer_size(dev, buf); | |
966 | break; | |
2ec749cb GH |
967 | } |
968 | return 0; | |
969 | } | |
970 | ||
2599aece | 971 | static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 972 | { |
2599aece | 973 | switch (buf[0]) { |
2ec749cb | 974 | /* stream commands */ |
06b86357 PB |
975 | case ERASE_12: |
976 | case ERASE_16: | |
977 | cmd->xfer = 0; | |
978 | break; | |
2ec749cb GH |
979 | case READ_6: |
980 | case READ_REVERSE: | |
981 | case RECOVER_BUFFERED_DATA: | |
982 | case WRITE_6: | |
2599aece PB |
983 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); |
984 | if (buf[1] & 0x01) { /* fixed */ | |
985 | cmd->xfer *= dev->blocksize; | |
986 | } | |
2ec749cb | 987 | break; |
065c2599 PB |
988 | case READ_16: |
989 | case READ_REVERSE_16: | |
990 | case VERIFY_16: | |
991 | case WRITE_16: | |
065c2599 PB |
992 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); |
993 | if (buf[1] & 0x01) { /* fixed */ | |
994 | cmd->xfer *= dev->blocksize; | |
995 | } | |
996 | break; | |
2ec749cb | 997 | case REWIND: |
15e58a21 | 998 | case LOAD_UNLOAD: |
2599aece | 999 | cmd->xfer = 0; |
2ec749cb | 1000 | break; |
06b86357 PB |
1001 | case SPACE_16: |
1002 | cmd->xfer = buf[13] | (buf[12] << 8); | |
1003 | break; | |
1004 | case READ_POSITION: | |
9ce1bb2d CH |
1005 | switch (buf[1] & 0x1f) /* operation code */ { |
1006 | case SHORT_FORM_BLOCK_ID: | |
1007 | case SHORT_FORM_VENDOR_SPECIFIC: | |
1008 | cmd->xfer = 20; | |
1009 | break; | |
1010 | case LONG_FORM: | |
1011 | cmd->xfer = 32; | |
1012 | break; | |
1013 | case EXTENDED_FORM: | |
1014 | cmd->xfer = buf[8] | (buf[7] << 8); | |
1015 | break; | |
1016 | default: | |
1017 | return -1; | |
1018 | } | |
1019 | ||
06b86357 PB |
1020 | break; |
1021 | case FORMAT_UNIT: | |
1022 | cmd->xfer = buf[4] | (buf[3] << 8); | |
1023 | break; | |
2ec749cb GH |
1024 | /* generic commands */ |
1025 | default: | |
2599aece | 1026 | return scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
1027 | } |
1028 | return 0; | |
1029 | } | |
1030 | ||
40723a99 CH |
1031 | static int scsi_req_medium_changer_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
1032 | { | |
1033 | switch (buf[0]) { | |
1034 | /* medium changer commands */ | |
1035 | case EXCHANGE_MEDIUM: | |
1036 | case INITIALIZE_ELEMENT_STATUS: | |
1037 | case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: | |
1038 | case MOVE_MEDIUM: | |
1039 | case POSITION_TO_ELEMENT: | |
1040 | cmd->xfer = 0; | |
1041 | break; | |
1042 | case READ_ELEMENT_STATUS: | |
1043 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); | |
1044 | break; | |
1045 | ||
1046 | /* generic commands */ | |
1047 | default: | |
1048 | return scsi_req_length(cmd, dev, buf); | |
1049 | } | |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | ||
2599aece | 1054 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 1055 | { |
a5ee9085 PB |
1056 | if (!cmd->xfer) { |
1057 | cmd->mode = SCSI_XFER_NONE; | |
1058 | return; | |
1059 | } | |
2599aece | 1060 | switch (cmd->buf[0]) { |
97a06435 GH |
1061 | case WRITE_6: |
1062 | case WRITE_10: | |
5e30a07d | 1063 | case WRITE_VERIFY_10: |
97a06435 GH |
1064 | case WRITE_12: |
1065 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1066 | case WRITE_16: |
1067 | case WRITE_VERIFY_16: | |
97a06435 GH |
1068 | case COPY: |
1069 | case COPY_VERIFY: | |
1070 | case COMPARE: | |
1071 | case CHANGE_DEFINITION: | |
1072 | case LOG_SELECT: | |
1073 | case MODE_SELECT: | |
1074 | case MODE_SELECT_10: | |
1075 | case SEND_DIAGNOSTIC: | |
1076 | case WRITE_BUFFER: | |
1077 | case FORMAT_UNIT: | |
1078 | case REASSIGN_BLOCKS: | |
97a06435 GH |
1079 | case SEARCH_EQUAL: |
1080 | case SEARCH_HIGH: | |
1081 | case SEARCH_LOW: | |
1082 | case UPDATE_BLOCK: | |
5e30a07d HR |
1083 | case WRITE_LONG_10: |
1084 | case WRITE_SAME_10: | |
a5ee9085 | 1085 | case WRITE_SAME_16: |
381b634c | 1086 | case UNMAP: |
97a06435 GH |
1087 | case SEARCH_HIGH_12: |
1088 | case SEARCH_EQUAL_12: | |
1089 | case SEARCH_LOW_12: | |
97a06435 GH |
1090 | case MEDIUM_SCAN: |
1091 | case SEND_VOLUME_TAG: | |
06b86357 PB |
1092 | case SEND_CUE_SHEET: |
1093 | case SEND_DVD_STRUCTURE: | |
01bedeba | 1094 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 1095 | case MAINTENANCE_OUT: |
2599aece | 1096 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 | 1097 | break; |
e4b65262 CM |
1098 | case ATA_PASSTHROUGH_12: |
1099 | case ATA_PASSTHROUGH_16: | |
1100 | /* T_DIR */ | |
1101 | cmd->mode = (cmd->buf[2] & 0x8) ? | |
1102 | SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV; | |
1103 | break; | |
97a06435 | 1104 | default: |
a5ee9085 | 1105 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
1106 | break; |
1107 | } | |
1108 | } | |
1109 | ||
2599aece | 1110 | static uint64_t scsi_cmd_lba(SCSICommand *cmd) |
2ec749cb | 1111 | { |
2599aece | 1112 | uint8_t *buf = cmd->buf; |
2ec749cb GH |
1113 | uint64_t lba; |
1114 | ||
1115 | switch (buf[0] >> 5) { | |
1116 | case 0: | |
bd5da232 | 1117 | lba = ldl_be_p(&buf[0]) & 0x1fffff; |
2ec749cb GH |
1118 | break; |
1119 | case 1: | |
1120 | case 2: | |
bd5da232 | 1121 | case 5: |
06b86357 | 1122 | lba = ldl_be_p(&buf[2]) & 0xffffffffULL; |
2ec749cb GH |
1123 | break; |
1124 | case 4: | |
bd5da232 | 1125 | lba = ldq_be_p(&buf[2]); |
2ec749cb GH |
1126 | break; |
1127 | default: | |
1128 | lba = -1; | |
1129 | ||
1130 | } | |
1131 | return lba; | |
1132 | } | |
1133 | ||
afa46c46 | 1134 | int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb GH |
1135 | { |
1136 | int rc; | |
1137 | ||
28b70c9d PB |
1138 | switch (buf[0] >> 5) { |
1139 | case 0: | |
1140 | cmd->len = 6; | |
1141 | break; | |
1142 | case 1: | |
1143 | case 2: | |
1144 | cmd->len = 10; | |
1145 | break; | |
1146 | case 4: | |
1147 | cmd->len = 16; | |
1148 | break; | |
1149 | case 5: | |
1150 | cmd->len = 12; | |
1151 | break; | |
1152 | default: | |
1153 | return -1; | |
1154 | } | |
1155 | ||
40723a99 CH |
1156 | switch (dev->type) { |
1157 | case TYPE_TAPE: | |
afa46c46 | 1158 | rc = scsi_req_stream_length(cmd, dev, buf); |
40723a99 CH |
1159 | break; |
1160 | case TYPE_MEDIUM_CHANGER: | |
1161 | rc = scsi_req_medium_changer_length(cmd, dev, buf); | |
1162 | break; | |
1163 | default: | |
afa46c46 | 1164 | rc = scsi_req_length(cmd, dev, buf); |
40723a99 | 1165 | break; |
2ec749cb | 1166 | } |
40723a99 | 1167 | |
2ec749cb GH |
1168 | if (rc != 0) |
1169 | return rc; | |
1170 | ||
afa46c46 PB |
1171 | memcpy(cmd->buf, buf, cmd->len); |
1172 | scsi_cmd_xfer_mode(cmd); | |
1173 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1174 | return 0; |
1175 | } | |
ed3a34a3 | 1176 | |
53200fad PB |
1177 | void scsi_device_report_change(SCSIDevice *dev, SCSISense sense) |
1178 | { | |
1179 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1180 | ||
1181 | scsi_device_set_ua(dev, sense); | |
1182 | if (bus->info->change) { | |
1183 | bus->info->change(bus, dev, sense); | |
1184 | } | |
1185 | } | |
1186 | ||
a1f0cce2 HR |
1187 | /* |
1188 | * Predefined sense codes | |
1189 | */ | |
1190 | ||
1191 | /* No sense data available */ | |
1192 | const struct SCSISense sense_code_NO_SENSE = { | |
1193 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 | |
1194 | }; | |
1195 | ||
1196 | /* LUN not ready, Manual intervention required */ | |
1197 | const struct SCSISense sense_code_LUN_NOT_READY = { | |
1198 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 | |
1199 | }; | |
1200 | ||
1201 | /* LUN not ready, Medium not present */ | |
1202 | const struct SCSISense sense_code_NO_MEDIUM = { | |
1203 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 | |
1204 | }; | |
1205 | ||
68bb01f3 MA |
1206 | /* LUN not ready, medium removal prevented */ |
1207 | const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = { | |
93161b69 | 1208 | .key = NOT_READY, .asc = 0x53, .ascq = 0x02 |
68bb01f3 MA |
1209 | }; |
1210 | ||
a1f0cce2 HR |
1211 | /* Hardware error, internal target failure */ |
1212 | const struct SCSISense sense_code_TARGET_FAILURE = { | |
1213 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 | |
1214 | }; | |
1215 | ||
1216 | /* Illegal request, invalid command operation code */ | |
1217 | const struct SCSISense sense_code_INVALID_OPCODE = { | |
1218 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 | |
1219 | }; | |
1220 | ||
1221 | /* Illegal request, LBA out of range */ | |
1222 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { | |
1223 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 | |
1224 | }; | |
1225 | ||
1226 | /* Illegal request, Invalid field in CDB */ | |
1227 | const struct SCSISense sense_code_INVALID_FIELD = { | |
1228 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 | |
1229 | }; | |
1230 | ||
380feaff PB |
1231 | /* Illegal request, Invalid field in parameter list */ |
1232 | const struct SCSISense sense_code_INVALID_PARAM = { | |
1233 | .key = ILLEGAL_REQUEST, .asc = 0x26, .ascq = 0x00 | |
1234 | }; | |
1235 | ||
1236 | /* Illegal request, Parameter list length error */ | |
1237 | const struct SCSISense sense_code_INVALID_PARAM_LEN = { | |
1238 | .key = ILLEGAL_REQUEST, .asc = 0x1a, .ascq = 0x00 | |
1239 | }; | |
1240 | ||
a1f0cce2 HR |
1241 | /* Illegal request, LUN not supported */ |
1242 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { | |
1243 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 | |
1244 | }; | |
1245 | ||
a872a304 PB |
1246 | /* Illegal request, Saving parameters not supported */ |
1247 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { | |
1248 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 | |
1249 | }; | |
1250 | ||
1251 | /* Illegal request, Incompatible medium installed */ | |
67cc61e4 | 1252 | const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = { |
a872a304 PB |
1253 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 |
1254 | }; | |
1255 | ||
68bb01f3 MA |
1256 | /* Illegal request, medium removal prevented */ |
1257 | const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = { | |
93161b69 | 1258 | .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x02 |
68bb01f3 MA |
1259 | }; |
1260 | ||
a1f0cce2 HR |
1261 | /* Command aborted, I/O process terminated */ |
1262 | const struct SCSISense sense_code_IO_ERROR = { | |
1263 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 | |
1264 | }; | |
1265 | ||
1266 | /* Command aborted, I_T Nexus loss occurred */ | |
1267 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { | |
1268 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 | |
1269 | }; | |
1270 | ||
1271 | /* Command aborted, Logical Unit failure */ | |
1272 | const struct SCSISense sense_code_LUN_FAILURE = { | |
1273 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 | |
1274 | }; | |
1275 | ||
aaebacef PB |
1276 | /* Unit attention, Capacity data has changed */ |
1277 | const struct SCSISense sense_code_CAPACITY_CHANGED = { | |
1278 | .key = UNIT_ATTENTION, .asc = 0x2a, .ascq = 0x09 | |
1279 | }; | |
1280 | ||
a872a304 PB |
1281 | /* Unit attention, Power on, reset or bus device reset occurred */ |
1282 | const struct SCSISense sense_code_RESET = { | |
1283 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 | |
1284 | }; | |
1285 | ||
8a9c16f6 PB |
1286 | /* Unit attention, No medium */ |
1287 | const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = { | |
1288 | .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00 | |
1289 | }; | |
1290 | ||
a872a304 PB |
1291 | /* Unit attention, Medium may have changed */ |
1292 | const struct SCSISense sense_code_MEDIUM_CHANGED = { | |
1293 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 | |
1294 | }; | |
1295 | ||
1296 | /* Unit attention, Reported LUNs data has changed */ | |
1297 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { | |
1298 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e | |
1299 | }; | |
1300 | ||
1301 | /* Unit attention, Device internal reset */ | |
1302 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { | |
1303 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 | |
1304 | }; | |
1305 | ||
6a8a685c RS |
1306 | /* Data Protection, Write Protected */ |
1307 | const struct SCSISense sense_code_WRITE_PROTECTED = { | |
1308 | .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x00 | |
1309 | }; | |
1310 | ||
a1f0cce2 HR |
1311 | /* |
1312 | * scsi_build_sense | |
1313 | * | |
b45ef674 | 1314 | * Convert between fixed and descriptor sense buffers |
a1f0cce2 | 1315 | */ |
b45ef674 PB |
1316 | int scsi_build_sense(uint8_t *in_buf, int in_len, |
1317 | uint8_t *buf, int len, bool fixed) | |
a1f0cce2 | 1318 | { |
b45ef674 PB |
1319 | bool fixed_in; |
1320 | SCSISense sense; | |
a1f0cce2 HR |
1321 | if (!fixed && len < 8) { |
1322 | return 0; | |
1323 | } | |
1324 | ||
b45ef674 PB |
1325 | if (in_len == 0) { |
1326 | sense.key = NO_SENSE; | |
1327 | sense.asc = 0; | |
1328 | sense.ascq = 0; | |
1329 | } else { | |
1330 | fixed_in = (in_buf[0] & 2) == 0; | |
1331 | ||
1332 | if (fixed == fixed_in) { | |
1333 | memcpy(buf, in_buf, MIN(len, in_len)); | |
1334 | return MIN(len, in_len); | |
1335 | } | |
1336 | ||
1337 | if (fixed_in) { | |
1338 | sense.key = in_buf[2]; | |
1339 | sense.asc = in_buf[12]; | |
1340 | sense.ascq = in_buf[13]; | |
1341 | } else { | |
1342 | sense.key = in_buf[1]; | |
1343 | sense.asc = in_buf[2]; | |
1344 | sense.ascq = in_buf[3]; | |
1345 | } | |
1346 | } | |
1347 | ||
a1f0cce2 HR |
1348 | memset(buf, 0, len); |
1349 | if (fixed) { | |
1350 | /* Return fixed format sense buffer */ | |
77e4743c | 1351 | buf[0] = 0x70; |
a1f0cce2 | 1352 | buf[2] = sense.key; |
eae31cb9 | 1353 | buf[7] = 10; |
a1f0cce2 HR |
1354 | buf[12] = sense.asc; |
1355 | buf[13] = sense.ascq; | |
1356 | return MIN(len, 18); | |
1357 | } else { | |
1358 | /* Return descriptor format sense buffer */ | |
1359 | buf[0] = 0x72; | |
1360 | buf[1] = sense.key; | |
1361 | buf[2] = sense.asc; | |
1362 | buf[3] = sense.ascq; | |
1363 | return 8; | |
1364 | } | |
1365 | } | |
1366 | ||
ec766865 GH |
1367 | static const char *scsi_command_name(uint8_t cmd) |
1368 | { | |
1369 | static const char *names[] = { | |
1370 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", | |
5e30a07d | 1371 | [ REWIND ] = "REWIND", |
ec766865 GH |
1372 | [ REQUEST_SENSE ] = "REQUEST_SENSE", |
1373 | [ FORMAT_UNIT ] = "FORMAT_UNIT", | |
1374 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", | |
40723a99 CH |
1375 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS/INITIALIZE ELEMENT STATUS", |
1376 | /* LOAD_UNLOAD and INITIALIZE_ELEMENT_STATUS use the same operation code */ | |
ec766865 GH |
1377 | [ READ_6 ] = "READ_6", |
1378 | [ WRITE_6 ] = "WRITE_6", | |
00a01ad4 | 1379 | [ SET_CAPACITY ] = "SET_CAPACITY", |
ec766865 GH |
1380 | [ READ_REVERSE ] = "READ_REVERSE", |
1381 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", | |
1382 | [ SPACE ] = "SPACE", | |
1383 | [ INQUIRY ] = "INQUIRY", | |
1384 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", | |
c7126d5b NB |
1385 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", |
1386 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
ec766865 GH |
1387 | [ MODE_SELECT ] = "MODE_SELECT", |
1388 | [ RESERVE ] = "RESERVE", | |
1389 | [ RELEASE ] = "RELEASE", | |
1390 | [ COPY ] = "COPY", | |
1391 | [ ERASE ] = "ERASE", | |
1392 | [ MODE_SENSE ] = "MODE_SENSE", | |
15e58a21 CH |
1393 | [ START_STOP ] = "START_STOP/LOAD_UNLOAD", |
1394 | /* LOAD_UNLOAD and START_STOP use the same operation code */ | |
ec766865 GH |
1395 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", |
1396 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", | |
1397 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", | |
5e30a07d | 1398 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", |
ec766865 GH |
1399 | [ READ_10 ] = "READ_10", |
1400 | [ WRITE_10 ] = "WRITE_10", | |
40723a99 CH |
1401 | [ SEEK_10 ] = "SEEK_10/POSITION_TO_ELEMENT", |
1402 | /* SEEK_10 and POSITION_TO_ELEMENT use the same operation code */ | |
5e30a07d HR |
1403 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", |
1404 | [ VERIFY_10 ] = "VERIFY_10", | |
ec766865 GH |
1405 | [ SEARCH_HIGH ] = "SEARCH_HIGH", |
1406 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", | |
1407 | [ SEARCH_LOW ] = "SEARCH_LOW", | |
1408 | [ SET_LIMITS ] = "SET_LIMITS", | |
00a01ad4 | 1409 | [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION", |
545557d4 | 1410 | /* READ_POSITION and PRE_FETCH use the same operation code */ |
ec766865 GH |
1411 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", |
1412 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", | |
40723a99 CH |
1413 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA/INITIALIZE_ELEMENT_STATUS_WITH_RANGE", |
1414 | /* READ_DEFECT_DATA and INITIALIZE_ELEMENT_STATUS_WITH_RANGE use the same operation code */ | |
ec766865 GH |
1415 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", |
1416 | [ COMPARE ] = "COMPARE", | |
1417 | [ COPY_VERIFY ] = "COPY_VERIFY", | |
1418 | [ WRITE_BUFFER ] = "WRITE_BUFFER", | |
1419 | [ READ_BUFFER ] = "READ_BUFFER", | |
1420 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", | |
5e30a07d HR |
1421 | [ READ_LONG_10 ] = "READ_LONG_10", |
1422 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", | |
ec766865 | 1423 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", |
5e30a07d HR |
1424 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", |
1425 | [ UNMAP ] = "UNMAP", | |
ec766865 | 1426 | [ READ_TOC ] = "READ_TOC", |
5e30a07d | 1427 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", |
3e46d87d | 1428 | [ SANITIZE ] = "SANITIZE", |
5e30a07d | 1429 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", |
ec766865 GH |
1430 | [ LOG_SELECT ] = "LOG_SELECT", |
1431 | [ LOG_SENSE ] = "LOG_SENSE", | |
1432 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", | |
1433 | [ RESERVE_10 ] = "RESERVE_10", | |
1434 | [ RELEASE_10 ] = "RELEASE_10", | |
1435 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", | |
1436 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", | |
1437 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", | |
5e30a07d HR |
1438 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", |
1439 | [ EXTENDED_COPY ] = "EXTENDED_COPY", | |
e4b65262 | 1440 | [ ATA_PASSTHROUGH_16 ] = "ATA_PASSTHROUGH_16", |
5e30a07d HR |
1441 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", |
1442 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", | |
1443 | [ READ_16 ] = "READ_16", | |
1444 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", | |
1445 | [ WRITE_16 ] = "WRITE_16", | |
1446 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", | |
1447 | [ VERIFY_16 ] = "VERIFY_16", | |
00a01ad4 PB |
1448 | [ PRE_FETCH_16 ] = "PRE_FETCH_16", |
1449 | [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16", | |
1450 | /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */ | |
5e30a07d | 1451 | [ LOCATE_16 ] = "LOCATE_16", |
00a01ad4 | 1452 | [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16", |
48bb9f53 | 1453 | /* ERASE_16 and WRITE_SAME_16 use the same operation code */ |
f6515262 | 1454 | [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16", |
5e30a07d HR |
1455 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", |
1456 | [ REPORT_LUNS ] = "REPORT_LUNS", | |
e4b65262 | 1457 | [ ATA_PASSTHROUGH_12 ] = "BLANK/ATA_PASSTHROUGH_12", |
ec766865 | 1458 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", |
40723a99 | 1459 | [ EXCHANGE_MEDIUM ] = "EXCHANGE MEDIUM", |
ec766865 GH |
1460 | [ READ_12 ] = "READ_12", |
1461 | [ WRITE_12 ] = "WRITE_12", | |
00a01ad4 PB |
1462 | [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE", |
1463 | /* ERASE_12 and GET_PERFORMANCE use the same operation code */ | |
f6515262 | 1464 | [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12", |
ec766865 | 1465 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", |
5e30a07d | 1466 | [ VERIFY_12 ] = "VERIFY_12", |
ec766865 GH |
1467 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", |
1468 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", | |
1469 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", | |
1470 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", | |
00a01ad4 PB |
1471 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING", |
1472 | /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */ | |
1473 | [ READ_CD ] = "READ_CD", | |
5e30a07d | 1474 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", |
00a01ad4 PB |
1475 | [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE", |
1476 | [ RESERVE_TRACK ] = "RESERVE_TRACK", | |
1477 | [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET", | |
1478 | [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE", | |
ec766865 | 1479 | [ SET_CD_SPEED ] = "SET_CD_SPEED", |
00a01ad4 PB |
1480 | [ SET_READ_AHEAD ] = "SET_READ_AHEAD", |
1481 | [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE", | |
1482 | [ MECHANISM_STATUS ] = "MECHANISM_STATUS", | |
ec766865 GH |
1483 | }; |
1484 | ||
1485 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) | |
1486 | return "*UNKNOWN*"; | |
1487 | return names[cmd]; | |
1488 | } | |
1489 | ||
ad2d30f7 PB |
1490 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1491 | { | |
8e86b93c | 1492 | assert(req->refcount > 0); |
ad2d30f7 PB |
1493 | req->refcount++; |
1494 | return req; | |
1495 | } | |
1496 | ||
1497 | void scsi_req_unref(SCSIRequest *req) | |
1498 | { | |
68bd348a | 1499 | assert(req->refcount > 0); |
ad2d30f7 | 1500 | if (--req->refcount == 0) { |
8e86b93c PB |
1501 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, req->dev->qdev.parent_bus); |
1502 | if (bus->info->free_request && req->hba_private) { | |
1503 | bus->info->free_request(bus, req->hba_private); | |
1504 | } | |
12010e7b PB |
1505 | if (req->ops->free_req) { |
1506 | req->ops->free_req(req); | |
ad2d30f7 | 1507 | } |
7267c094 | 1508 | g_free(req); |
ad2d30f7 PB |
1509 | } |
1510 | } | |
1511 | ||
ad3376cc PB |
1512 | /* Tell the device that we finished processing this chunk of I/O. It |
1513 | will start the next chunk or complete the command. */ | |
1514 | void scsi_req_continue(SCSIRequest *req) | |
1515 | { | |
6f6710aa PB |
1516 | if (req->io_canceled) { |
1517 | trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); | |
1518 | return; | |
1519 | } | |
ad3376cc PB |
1520 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
1521 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1522 | req->ops->write_data(req); |
ad3376cc | 1523 | } else { |
12010e7b | 1524 | req->ops->read_data(req); |
ad3376cc PB |
1525 | } |
1526 | } | |
1527 | ||
ab9adc88 PB |
1528 | /* Called by the devices when data is ready for the HBA. The HBA should |
1529 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1530 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1531 | void scsi_req_data(SCSIRequest *req, int len) |
1532 | { | |
3d5aba97 | 1533 | uint8_t *buf; |
e88c591d PB |
1534 | if (req->io_canceled) { |
1535 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1536 | return; |
e88c591d | 1537 | } |
01e95455 PB |
1538 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1539 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1540 | if (!req->sg) { |
1541 | req->resid -= len; | |
1542 | req->bus->info->transfer_data(req, len); | |
1543 | return; | |
1544 | } | |
1545 | ||
1546 | /* If the device calls scsi_req_data and the HBA specified a | |
1547 | * scatter/gather list, the transfer has to happen in a single | |
1548 | * step. */ | |
1549 | assert(!req->dma_started); | |
1550 | req->dma_started = true; | |
1551 | ||
1552 | buf = scsi_req_get_buf(req); | |
1553 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1554 | req->resid = dma_buf_read(buf, len, req->sg); | |
1555 | } else { | |
1556 | req->resid = dma_buf_write(buf, len, req->sg); | |
1557 | } | |
1558 | scsi_req_continue(req); | |
ab9adc88 PB |
1559 | } |
1560 | ||
ec766865 GH |
1561 | void scsi_req_print(SCSIRequest *req) |
1562 | { | |
1563 | FILE *fp = stderr; | |
1564 | int i; | |
1565 | ||
1566 | fprintf(fp, "[%s id=%d] %s", | |
1567 | req->dev->qdev.parent_bus->name, | |
1568 | req->dev->id, | |
1569 | scsi_command_name(req->cmd.buf[0])); | |
1570 | for (i = 1; i < req->cmd.len; i++) { | |
1571 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1572 | } | |
1573 | switch (req->cmd.mode) { | |
1574 | case SCSI_XFER_NONE: | |
1575 | fprintf(fp, " - none\n"); | |
1576 | break; | |
1577 | case SCSI_XFER_FROM_DEV: | |
1578 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1579 | break; | |
1580 | case SCSI_XFER_TO_DEV: | |
1581 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1582 | break; | |
1583 | default: | |
1584 | fprintf(fp, " - Oops\n"); | |
1585 | break; | |
1586 | } | |
1587 | } | |
1588 | ||
682a9b21 | 1589 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1590 | { |
682a9b21 PB |
1591 | assert(req->status == -1); |
1592 | req->status = status; | |
b45ef674 | 1593 | |
335f560f | 1594 | assert(req->sense_len <= sizeof(req->sense)); |
b45ef674 PB |
1595 | if (status == GOOD) { |
1596 | req->sense_len = 0; | |
1597 | } | |
1598 | ||
1599 | if (req->sense_len) { | |
1600 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1601 | req->dev->sense_len = req->sense_len; |
1602 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1603 | } else { | |
1604 | req->dev->sense_len = 0; | |
1605 | req->dev->sense_is_ua = false; | |
b45ef674 | 1606 | } |
b45ef674 | 1607 | |
6dc06f08 PB |
1608 | /* |
1609 | * Unit attention state is now stored in the device's sense buffer | |
1610 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1611 | * flags. | |
1612 | */ | |
1613 | scsi_clear_unit_attention(req); | |
1614 | ||
ad2d30f7 | 1615 | scsi_req_ref(req); |
e8637c90 | 1616 | scsi_req_dequeue(req); |
01e95455 | 1617 | req->bus->info->complete(req, req->status, req->resid); |
ad2d30f7 | 1618 | scsi_req_unref(req); |
ed3a34a3 | 1619 | } |
db07c0f8 | 1620 | |
94d3f98a PB |
1621 | void scsi_req_cancel(SCSIRequest *req) |
1622 | { | |
814589c4 | 1623 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); |
e88c591d PB |
1624 | if (!req->enqueued) { |
1625 | return; | |
94d3f98a PB |
1626 | } |
1627 | scsi_req_ref(req); | |
1628 | scsi_req_dequeue(req); | |
e88c591d PB |
1629 | req->io_canceled = true; |
1630 | if (req->ops->cancel_io) { | |
1631 | req->ops->cancel_io(req); | |
1632 | } | |
afd4030c PB |
1633 | if (req->bus->info->cancel) { |
1634 | req->bus->info->cancel(req); | |
94d3f98a PB |
1635 | } |
1636 | scsi_req_unref(req); | |
1637 | } | |
1638 | ||
19d110ab PB |
1639 | void scsi_req_abort(SCSIRequest *req, int status) |
1640 | { | |
e88c591d PB |
1641 | if (!req->enqueued) { |
1642 | return; | |
1643 | } | |
1644 | scsi_req_ref(req); | |
1645 | scsi_req_dequeue(req); | |
1646 | req->io_canceled = true; | |
12010e7b PB |
1647 | if (req->ops->cancel_io) { |
1648 | req->ops->cancel_io(req); | |
19d110ab | 1649 | } |
682a9b21 | 1650 | scsi_req_complete(req, status); |
e88c591d | 1651 | scsi_req_unref(req); |
19d110ab PB |
1652 | } |
1653 | ||
e48e84ea PB |
1654 | static int scsi_ua_precedence(SCSISense sense) |
1655 | { | |
1656 | if (sense.key != UNIT_ATTENTION) { | |
1657 | return INT_MAX; | |
1658 | } | |
1659 | if (sense.asc == 0x29 && sense.ascq == 0x04) { | |
1660 | /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */ | |
1661 | return 1; | |
1662 | } else if (sense.asc == 0x3F && sense.ascq == 0x01) { | |
1663 | /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */ | |
1664 | return 2; | |
1665 | } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) { | |
1666 | /* These two go with "all others". */ | |
1667 | ; | |
1668 | } else if (sense.asc == 0x29 && sense.ascq <= 0x07) { | |
1669 | /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0 | |
1670 | * POWER ON OCCURRED = 1 | |
1671 | * SCSI BUS RESET OCCURRED = 2 | |
1672 | * BUS DEVICE RESET FUNCTION OCCURRED = 3 | |
1673 | * I_T NEXUS LOSS OCCURRED = 7 | |
1674 | */ | |
1675 | return sense.ascq; | |
1676 | } else if (sense.asc == 0x2F && sense.ascq == 0x01) { | |
1677 | /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */ | |
1678 | return 8; | |
1679 | } | |
1680 | return (sense.asc << 8) | sense.ascq; | |
1681 | } | |
1682 | ||
1683 | void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense) | |
1684 | { | |
1685 | int prec1, prec2; | |
1686 | if (sense.key != UNIT_ATTENTION) { | |
1687 | return; | |
1688 | } | |
1689 | trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key, | |
1690 | sense.asc, sense.ascq); | |
1691 | ||
1692 | /* | |
1693 | * Override a pre-existing unit attention condition, except for a more | |
1694 | * important reset condition. | |
1695 | */ | |
1696 | prec1 = scsi_ua_precedence(sdev->unit_attention); | |
1697 | prec2 = scsi_ua_precedence(sense); | |
1698 | if (prec2 < prec1) { | |
1699 | sdev->unit_attention = sense; | |
1700 | } | |
1701 | } | |
1702 | ||
c7b48872 | 1703 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1704 | { |
1705 | SCSIRequest *req; | |
1706 | ||
1707 | while (!QTAILQ_EMPTY(&sdev->requests)) { | |
1708 | req = QTAILQ_FIRST(&sdev->requests); | |
94d3f98a | 1709 | scsi_req_cancel(req); |
c557e889 | 1710 | } |
e48e84ea PB |
1711 | |
1712 | scsi_device_set_ua(sdev, sense); | |
c557e889 PB |
1713 | } |
1714 | ||
baa1bd89 PB |
1715 | static char *scsibus_get_dev_path(DeviceState *dev) |
1716 | { | |
1717 | SCSIDevice *d = DO_UPCAST(SCSIDevice, qdev, dev); | |
1718 | DeviceState *hba = dev->parent_bus->parent; | |
09e5ab63 | 1719 | char *id; |
b7c8c35f | 1720 | char *path; |
baa1bd89 | 1721 | |
09e5ab63 | 1722 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1723 | if (id) { |
b7c8c35f | 1724 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1725 | } else { |
b7c8c35f | 1726 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1727 | } |
b7c8c35f PB |
1728 | g_free(id); |
1729 | return path; | |
baa1bd89 PB |
1730 | } |
1731 | ||
db07c0f8 GN |
1732 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1733 | { | |
b9eea3e6 | 1734 | SCSIDevice *d = SCSI_DEVICE(dev); |
a5cf8262 JM |
1735 | return g_strdup_printf("channel@%x/%s@%x,%x", d->channel, |
1736 | qdev_fw_name(dev), d->id, d->lun); | |
f48a7a6e PB |
1737 | } |
1738 | ||
0d3545e7 | 1739 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) |
f48a7a6e | 1740 | { |
0866aca1 | 1741 | BusChild *kid; |
f48a7a6e | 1742 | SCSIDevice *target_dev = NULL; |
db07c0f8 | 1743 | |
0866aca1 AL |
1744 | QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, ChildrenHead, sibling) { |
1745 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 1746 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
db07c0f8 | 1747 | |
0d3545e7 | 1748 | if (dev->channel == channel && dev->id == id) { |
f48a7a6e PB |
1749 | if (dev->lun == lun) { |
1750 | return dev; | |
1751 | } | |
1752 | target_dev = dev; | |
1753 | } | |
1754 | } | |
1755 | return target_dev; | |
db07c0f8 | 1756 | } |
b9eea3e6 | 1757 | |
63f740dd PB |
1758 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1759 | ||
1760 | static void put_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1761 | { | |
1762 | SCSIDevice *s = pv; | |
1763 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1764 | SCSIRequest *req; | |
1765 | ||
1766 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1767 | assert(!req->io_canceled); | |
1768 | assert(req->status == -1); | |
63f740dd PB |
1769 | assert(req->enqueued); |
1770 | ||
18eef3bc | 1771 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
1772 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
1773 | qemu_put_be32s(f, &req->tag); | |
1774 | qemu_put_be32s(f, &req->lun); | |
1775 | if (bus->info->save_request) { | |
1776 | bus->info->save_request(f, req); | |
1777 | } | |
1778 | if (req->ops->save_request) { | |
1779 | req->ops->save_request(f, req); | |
1780 | } | |
1781 | } | |
1782 | qemu_put_sbyte(f, 0); | |
1783 | } | |
1784 | ||
1785 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1786 | { | |
1787 | SCSIDevice *s = pv; | |
1788 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 1789 | int8_t sbyte; |
63f740dd | 1790 | |
18eef3bc | 1791 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
1792 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
1793 | uint32_t tag; | |
1794 | uint32_t lun; | |
1795 | SCSIRequest *req; | |
1796 | ||
1797 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1798 | qemu_get_be32s(f, &tag); | |
1799 | qemu_get_be32s(f, &lun); | |
1800 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
18eef3bc | 1801 | req->retry = (sbyte == 1); |
63f740dd PB |
1802 | if (bus->info->load_request) { |
1803 | req->hba_private = bus->info->load_request(f, req); | |
1804 | } | |
1805 | if (req->ops->load_request) { | |
1806 | req->ops->load_request(f, req); | |
1807 | } | |
1808 | ||
1809 | /* Just restart it later. */ | |
63f740dd PB |
1810 | scsi_req_enqueue_internal(req); |
1811 | ||
1812 | /* At this point, the request will be kept alive by the reference | |
1813 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1814 | * The HBA of course will add its own reference in the load_request | |
1815 | * callback if it needs to hold on the SCSIRequest. | |
1816 | */ | |
1817 | scsi_req_unref(req); | |
1818 | } | |
1819 | ||
1820 | return 0; | |
1821 | } | |
1822 | ||
350e6e41 CM |
1823 | static int scsi_qdev_unplug(DeviceState *qdev) |
1824 | { | |
1825 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
1826 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1827 | ||
1828 | if (bus->info->hot_unplug) { | |
1829 | bus->info->hot_unplug(bus, dev); | |
1830 | } | |
1831 | return qdev_simple_unplug_cb(qdev); | |
1832 | } | |
1833 | ||
12badfc2 | 1834 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
1835 | .name = "scsi-requests", |
1836 | .get = get_scsi_requests, | |
1837 | .put = put_scsi_requests, | |
1838 | }; | |
1839 | ||
1840 | const VMStateDescription vmstate_scsi_device = { | |
1841 | .name = "SCSIDevice", | |
1842 | .version_id = 1, | |
1843 | .minimum_version_id = 1, | |
1844 | .minimum_version_id_old = 1, | |
1845 | .fields = (VMStateField[]) { | |
1846 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1847 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1848 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1849 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
1850 | VMSTATE_UINT8_ARRAY(sense, SCSIDevice, SCSI_SENSE_BUF_SIZE), | |
1851 | VMSTATE_UINT32(sense_len, SCSIDevice), | |
1852 | { | |
1853 | .name = "requests", | |
1854 | .version_id = 0, | |
1855 | .field_exists = NULL, | |
1856 | .size = 0, /* ouch */ | |
1857 | .info = &vmstate_info_scsi_requests, | |
1858 | .flags = VMS_SINGLE, | |
1859 | .offset = 0, | |
1860 | }, | |
1861 | VMSTATE_END_OF_LIST() | |
1862 | } | |
1863 | }; | |
1864 | ||
39bffca2 AL |
1865 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
1866 | { | |
1867 | DeviceClass *k = DEVICE_CLASS(klass); | |
0d936928 | 1868 | k->bus_type = TYPE_SCSI_BUS; |
39bffca2 | 1869 | k->init = scsi_qdev_init; |
350e6e41 | 1870 | k->unplug = scsi_qdev_unplug; |
39bffca2 | 1871 | k->exit = scsi_qdev_exit; |
bce54474 | 1872 | k->props = scsi_props; |
39bffca2 AL |
1873 | } |
1874 | ||
8c43a6f0 | 1875 | static const TypeInfo scsi_device_type_info = { |
b9eea3e6 AL |
1876 | .name = TYPE_SCSI_DEVICE, |
1877 | .parent = TYPE_DEVICE, | |
1878 | .instance_size = sizeof(SCSIDevice), | |
1879 | .abstract = true, | |
1880 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 1881 | .class_init = scsi_device_class_init, |
b9eea3e6 AL |
1882 | }; |
1883 | ||
83f7d43a | 1884 | static void scsi_register_types(void) |
b9eea3e6 | 1885 | { |
0d936928 | 1886 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
1887 | type_register_static(&scsi_device_type_info); |
1888 | } | |
1889 | ||
83f7d43a | 1890 | type_init(scsi_register_types) |