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