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Commit | Line | Data |
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d52affa7 | 1 | #include "hw.h" |
2f792016 | 2 | #include "qemu-error.h" |
43b443b6 | 3 | #include "scsi.h" |
2ec749cb | 4 | #include "scsi-defs.h" |
d52affa7 | 5 | #include "qdev.h" |
2446333c | 6 | #include "blockdev.h" |
5138efec | 7 | #include "trace.h" |
3d5aba97 | 8 | #include "dma.h" |
d52affa7 | 9 | |
baa1bd89 | 10 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 11 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
afa46c46 | 12 | static int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf); |
71544d30 | 13 | static void scsi_req_dequeue(SCSIRequest *req); |
db07c0f8 | 14 | |
d52affa7 GH |
15 | static struct BusInfo scsi_bus_info = { |
16 | .name = "SCSI", | |
17 | .size = sizeof(SCSIBus), | |
baa1bd89 | 18 | .get_dev_path = scsibus_get_dev_path, |
db07c0f8 | 19 | .get_fw_dev_path = scsibus_get_fw_dev_path, |
d52affa7 | 20 | .props = (Property[]) { |
0d3545e7 | 21 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), |
d52affa7 | 22 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), |
7e0380b9 | 23 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), |
d52affa7 GH |
24 | DEFINE_PROP_END_OF_LIST(), |
25 | }, | |
26 | }; | |
27 | static int next_scsi_bus; | |
28 | ||
b9eea3e6 AL |
29 | static int scsi_device_init(SCSIDevice *s) |
30 | { | |
31 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
32 | if (sc->init) { | |
33 | return sc->init(s); | |
34 | } | |
35 | return 0; | |
36 | } | |
37 | ||
38 | static void scsi_device_destroy(SCSIDevice *s) | |
39 | { | |
40 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
41 | if (sc->destroy) { | |
42 | sc->destroy(s); | |
43 | } | |
44 | } | |
45 | ||
46 | static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun, | |
47 | uint8_t *buf, void *hba_private) | |
48 | { | |
49 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
50 | if (sc->alloc_req) { | |
51 | return sc->alloc_req(s, tag, lun, buf, hba_private); | |
52 | } | |
53 | ||
54 | return NULL; | |
55 | } | |
56 | ||
57 | static void scsi_device_unit_attention_reported(SCSIDevice *s) | |
58 | { | |
59 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
60 | if (sc->unit_attention_reported) { | |
61 | sc->unit_attention_reported(s); | |
62 | } | |
63 | } | |
64 | ||
d52affa7 | 65 | /* Create a scsi bus, and attach devices to it. */ |
afd4030c | 66 | void scsi_bus_new(SCSIBus *bus, DeviceState *host, const SCSIBusInfo *info) |
d52affa7 | 67 | { |
ca9c39fa | 68 | qbus_create_inplace(&bus->qbus, &scsi_bus_info, host, NULL); |
d52affa7 | 69 | bus->busnr = next_scsi_bus++; |
afd4030c | 70 | bus->info = info; |
cb23117b | 71 | bus->qbus.allow_hotplug = 1; |
d52affa7 GH |
72 | } |
73 | ||
71544d30 PB |
74 | static void scsi_dma_restart_bh(void *opaque) |
75 | { | |
76 | SCSIDevice *s = opaque; | |
77 | SCSIRequest *req, *next; | |
78 | ||
79 | qemu_bh_delete(s->bh); | |
80 | s->bh = NULL; | |
81 | ||
82 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { | |
83 | scsi_req_ref(req); | |
84 | if (req->retry) { | |
85 | req->retry = false; | |
86 | switch (req->cmd.mode) { | |
87 | case SCSI_XFER_FROM_DEV: | |
88 | case SCSI_XFER_TO_DEV: | |
89 | scsi_req_continue(req); | |
90 | break; | |
91 | case SCSI_XFER_NONE: | |
5d0d2467 | 92 | assert(!req->sg); |
71544d30 PB |
93 | scsi_req_dequeue(req); |
94 | scsi_req_enqueue(req); | |
95 | break; | |
96 | } | |
97 | } | |
98 | scsi_req_unref(req); | |
99 | } | |
100 | } | |
101 | ||
102 | void scsi_req_retry(SCSIRequest *req) | |
103 | { | |
104 | /* No need to save a reference, because scsi_dma_restart_bh just | |
105 | * looks at the request list. */ | |
106 | req->retry = true; | |
107 | } | |
108 | ||
109 | static void scsi_dma_restart_cb(void *opaque, int running, RunState state) | |
110 | { | |
111 | SCSIDevice *s = opaque; | |
112 | ||
113 | if (!running) { | |
114 | return; | |
115 | } | |
116 | if (!s->bh) { | |
117 | s->bh = qemu_bh_new(scsi_dma_restart_bh, s); | |
118 | qemu_bh_schedule(s->bh); | |
119 | } | |
120 | } | |
121 | ||
d307af79 | 122 | static int scsi_qdev_init(DeviceState *qdev) |
d52affa7 | 123 | { |
b9eea3e6 | 124 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
d52affa7 | 125 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
7e0380b9 | 126 | SCSIDevice *d; |
01985dcf | 127 | int rc = -1; |
d52affa7 | 128 | |
0d3545e7 PB |
129 | if (dev->channel > bus->info->max_channel) { |
130 | error_report("bad scsi channel id: %d", dev->channel); | |
131 | goto err; | |
132 | } | |
7e0380b9 | 133 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
1ecda02b | 134 | error_report("bad scsi device id: %d", dev->id); |
d52affa7 GH |
135 | goto err; |
136 | } | |
d3d250bd PB |
137 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { |
138 | error_report("bad scsi device lun: %d", dev->lun); | |
139 | goto err; | |
140 | } | |
d52affa7 | 141 | |
7e0380b9 PB |
142 | if (dev->id == -1) { |
143 | int id = -1; | |
144 | if (dev->lun == -1) { | |
145 | dev->lun = 0; | |
146 | } | |
147 | do { | |
0d3545e7 | 148 | d = scsi_device_find(bus, dev->channel, ++id, dev->lun); |
d3d250bd PB |
149 | } while (d && d->lun == dev->lun && id < bus->info->max_target); |
150 | if (d && d->lun == dev->lun) { | |
7e0380b9 PB |
151 | error_report("no free target"); |
152 | goto err; | |
153 | } | |
154 | dev->id = id; | |
155 | } else if (dev->lun == -1) { | |
156 | int lun = -1; | |
157 | do { | |
0d3545e7 | 158 | d = scsi_device_find(bus, dev->channel, dev->id, ++lun); |
7e0380b9 | 159 | } while (d && d->lun == lun && lun < bus->info->max_lun); |
d3d250bd | 160 | if (d && d->lun == lun) { |
7e0380b9 PB |
161 | error_report("no free lun"); |
162 | goto err; | |
163 | } | |
164 | dev->lun = lun; | |
165 | } else { | |
0d3545e7 | 166 | d = scsi_device_find(bus, dev->channel, dev->id, dev->lun); |
d3d250bd PB |
167 | assert(d); |
168 | if (d->lun == dev->lun && dev != d) { | |
7e0380b9 PB |
169 | qdev_free(&d->qdev); |
170 | } | |
d52affa7 | 171 | } |
d52affa7 | 172 | |
9af99d98 | 173 | QTAILQ_INIT(&dev->requests); |
b9eea3e6 | 174 | rc = scsi_device_init(dev); |
71544d30 PB |
175 | if (rc == 0) { |
176 | dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb, | |
177 | dev); | |
178 | } | |
d52affa7 GH |
179 | |
180 | err: | |
01985dcf GH |
181 | return rc; |
182 | } | |
183 | ||
184 | static int scsi_qdev_exit(DeviceState *qdev) | |
185 | { | |
b9eea3e6 | 186 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 187 | |
71544d30 PB |
188 | if (dev->vmsentry) { |
189 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
190 | } | |
b9eea3e6 | 191 | scsi_device_destroy(dev); |
01985dcf | 192 | return 0; |
d52affa7 GH |
193 | } |
194 | ||
d52affa7 | 195 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
2d1fd261 | 196 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, |
ce4e7e46 | 197 | int unit, bool removable, int bootindex) |
d52affa7 GH |
198 | { |
199 | const char *driver; | |
200 | DeviceState *dev; | |
201 | ||
f8b6cc00 | 202 | driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk"; |
d52affa7 GH |
203 | dev = qdev_create(&bus->qbus, driver); |
204 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
ce4e7e46 PB |
205 | if (bootindex >= 0) { |
206 | qdev_prop_set_int32(dev, "bootindex", bootindex); | |
207 | } | |
2d1fd261 SH |
208 | if (qdev_prop_exists(dev, "removable")) { |
209 | qdev_prop_set_bit(dev, "removable", removable); | |
210 | } | |
18846dee MA |
211 | if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) { |
212 | qdev_free(dev); | |
213 | return NULL; | |
214 | } | |
33e66b86 MA |
215 | if (qdev_init(dev) < 0) |
216 | return NULL; | |
b9eea3e6 | 217 | return SCSI_DEVICE(dev); |
d52affa7 GH |
218 | } |
219 | ||
fa66b909 | 220 | int scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 221 | { |
42e766a2 | 222 | Location loc; |
d52affa7 | 223 | DriveInfo *dinfo; |
fa66b909 | 224 | int res = 0, unit; |
d52affa7 | 225 | |
42e766a2 | 226 | loc_push_none(&loc); |
d3d250bd | 227 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
228 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
229 | if (dinfo == NULL) { | |
230 | continue; | |
231 | } | |
42e766a2 | 232 | qemu_opts_loc_restore(dinfo->opts); |
ce4e7e46 | 233 | if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false, -1)) { |
fa66b909 MA |
234 | res = -1; |
235 | break; | |
236 | } | |
d52affa7 | 237 | } |
42e766a2 | 238 | loc_pop(&loc); |
fa66b909 | 239 | return res; |
d52affa7 | 240 | } |
89b08ae1 | 241 | |
12a08998 PB |
242 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
243 | { | |
244 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
245 | scsi_req_complete(req, CHECK_CONDITION); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | static const struct SCSIReqOps reqops_invalid_field = { | |
250 | .size = sizeof(SCSIRequest), | |
251 | .send_command = scsi_invalid_field | |
252 | }; | |
253 | ||
afa46c46 PB |
254 | /* SCSIReqOps implementation for invalid commands. */ |
255 | ||
256 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
257 | { | |
258 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
259 | scsi_req_complete(req, CHECK_CONDITION); | |
260 | return 0; | |
261 | } | |
262 | ||
adcf2754 | 263 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
264 | .size = sizeof(SCSIRequest), |
265 | .send_command = scsi_invalid_command | |
266 | }; | |
267 | ||
6dc06f08 PB |
268 | /* SCSIReqOps implementation for unit attention conditions. */ |
269 | ||
270 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
271 | { | |
272 | if (req->dev && req->dev->unit_attention.key == UNIT_ATTENTION) { | |
273 | scsi_req_build_sense(req, req->dev->unit_attention); | |
274 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
275 | scsi_req_build_sense(req, req->bus->unit_attention); | |
276 | } | |
277 | scsi_req_complete(req, CHECK_CONDITION); | |
278 | return 0; | |
279 | } | |
280 | ||
adcf2754 | 281 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
282 | .size = sizeof(SCSIRequest), |
283 | .send_command = scsi_unit_attention | |
284 | }; | |
285 | ||
fdaef069 PB |
286 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
287 | an invalid LUN. */ | |
288 | ||
289 | typedef struct SCSITargetReq SCSITargetReq; | |
290 | ||
291 | struct SCSITargetReq { | |
292 | SCSIRequest req; | |
293 | int len; | |
ba74307c | 294 | uint8_t buf[2056]; |
fdaef069 PB |
295 | }; |
296 | ||
297 | static void store_lun(uint8_t *outbuf, int lun) | |
298 | { | |
299 | if (lun < 256) { | |
300 | outbuf[1] = lun; | |
301 | return; | |
302 | } | |
303 | outbuf[1] = (lun & 255); | |
304 | outbuf[0] = (lun >> 8) | 0x40; | |
305 | } | |
306 | ||
307 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
308 | { | |
ba74307c PB |
309 | DeviceState *qdev; |
310 | int i, len, n; | |
0d3545e7 | 311 | int channel, id; |
ba74307c PB |
312 | bool found_lun0; |
313 | ||
fdaef069 PB |
314 | if (r->req.cmd.xfer < 16) { |
315 | return false; | |
316 | } | |
317 | if (r->req.cmd.buf[2] > 2) { | |
318 | return false; | |
319 | } | |
0d3545e7 | 320 | channel = r->req.dev->channel; |
ba74307c PB |
321 | id = r->req.dev->id; |
322 | found_lun0 = false; | |
323 | n = 0; | |
324 | QTAILQ_FOREACH(qdev, &r->req.bus->qbus.children, sibling) { | |
b9eea3e6 | 325 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 326 | |
0d3545e7 | 327 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
328 | if (dev->lun == 0) { |
329 | found_lun0 = true; | |
330 | } | |
331 | n += 8; | |
332 | } | |
333 | } | |
334 | if (!found_lun0) { | |
335 | n += 8; | |
336 | } | |
337 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
338 | if (len > sizeof(r->buf)) { | |
339 | /* TODO: > 256 LUNs? */ | |
340 | return false; | |
341 | } | |
342 | ||
fdaef069 | 343 | memset(r->buf, 0, len); |
ba74307c PB |
344 | stl_be_p(&r->buf, n); |
345 | i = found_lun0 ? 8 : 16; | |
346 | QTAILQ_FOREACH(qdev, &r->req.bus->qbus.children, sibling) { | |
b9eea3e6 | 347 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 348 | |
0d3545e7 | 349 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
350 | store_lun(&r->buf[i], dev->lun); |
351 | i += 8; | |
352 | } | |
fdaef069 | 353 | } |
ba74307c PB |
354 | assert(i == n + 8); |
355 | r->len = len; | |
fdaef069 PB |
356 | return true; |
357 | } | |
358 | ||
359 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
360 | { | |
361 | assert(r->req.dev->lun != r->req.lun); | |
362 | if (r->req.cmd.buf[1] & 0x2) { | |
363 | /* Command support data - optional, not implemented */ | |
364 | return false; | |
365 | } | |
366 | ||
367 | if (r->req.cmd.buf[1] & 0x1) { | |
368 | /* Vital product data */ | |
369 | uint8_t page_code = r->req.cmd.buf[2]; | |
370 | if (r->req.cmd.xfer < 4) { | |
371 | return false; | |
372 | } | |
373 | ||
374 | r->buf[r->len++] = page_code ; /* this page */ | |
375 | r->buf[r->len++] = 0x00; | |
376 | ||
377 | switch (page_code) { | |
378 | case 0x00: /* Supported page codes, mandatory */ | |
379 | { | |
380 | int pages; | |
381 | pages = r->len++; | |
382 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
383 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
384 | break; | |
385 | } | |
386 | default: | |
387 | return false; | |
388 | } | |
389 | /* done with EVPD */ | |
390 | assert(r->len < sizeof(r->buf)); | |
391 | r->len = MIN(r->req.cmd.xfer, r->len); | |
392 | return true; | |
393 | } | |
394 | ||
395 | /* Standard INQUIRY data */ | |
396 | if (r->req.cmd.buf[2] != 0) { | |
397 | return false; | |
398 | } | |
399 | ||
400 | /* PAGE CODE == 0 */ | |
401 | if (r->req.cmd.xfer < 5) { | |
9fac25bf | 402 | return false; |
fdaef069 PB |
403 | } |
404 | ||
405 | r->len = MIN(r->req.cmd.xfer, 36); | |
406 | memset(r->buf, 0, r->len); | |
407 | if (r->req.lun != 0) { | |
408 | r->buf[0] = TYPE_NO_LUN; | |
409 | } else { | |
410 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
411 | r->buf[2] = 5; /* Version */ | |
412 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
413 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 414 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
415 | memcpy(&r->buf[8], "QEMU ", 8); |
416 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
417 | strncpy((char *) &r->buf[32], QEMU_VERSION, 4); | |
418 | } | |
419 | return true; | |
420 | } | |
421 | ||
422 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) | |
423 | { | |
424 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
425 | ||
426 | switch (buf[0]) { | |
427 | case REPORT_LUNS: | |
428 | if (!scsi_target_emulate_report_luns(r)) { | |
429 | goto illegal_request; | |
430 | } | |
431 | break; | |
432 | case INQUIRY: | |
433 | if (!scsi_target_emulate_inquiry(r)) { | |
434 | goto illegal_request; | |
435 | } | |
436 | break; | |
739df215 PB |
437 | case REQUEST_SENSE: |
438 | if (req->cmd.xfer < 4) { | |
439 | goto illegal_request; | |
440 | } | |
8b2a04ee PB |
441 | r->len = scsi_device_get_sense(r->req.dev, r->buf, |
442 | MIN(req->cmd.xfer, sizeof r->buf), | |
739df215 | 443 | (req->cmd.buf[1] & 1) == 0); |
3653d8c4 | 444 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 445 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
446 | r->req.dev->sense_len = 0; |
447 | r->req.dev->sense_is_ua = false; | |
448 | } | |
739df215 | 449 | break; |
fdaef069 PB |
450 | default: |
451 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); | |
452 | scsi_req_complete(req, CHECK_CONDITION); | |
453 | return 0; | |
454 | illegal_request: | |
455 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
456 | scsi_req_complete(req, CHECK_CONDITION); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | if (!r->len) { | |
461 | scsi_req_complete(req, GOOD); | |
462 | } | |
463 | return r->len; | |
464 | } | |
465 | ||
466 | static void scsi_target_read_data(SCSIRequest *req) | |
467 | { | |
468 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
469 | uint32_t n; | |
470 | ||
471 | n = r->len; | |
472 | if (n > 0) { | |
473 | r->len = 0; | |
474 | scsi_req_data(&r->req, n); | |
475 | } else { | |
476 | scsi_req_complete(&r->req, GOOD); | |
477 | } | |
478 | } | |
479 | ||
480 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
481 | { | |
482 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
483 | ||
484 | return r->buf; | |
485 | } | |
486 | ||
adcf2754 | 487 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
488 | .size = sizeof(SCSITargetReq), |
489 | .send_command = scsi_target_send_command, | |
490 | .read_data = scsi_target_read_data, | |
491 | .get_buf = scsi_target_get_buf, | |
492 | }; | |
493 | ||
494 | ||
adcf2754 PB |
495 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
496 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
497 | { |
498 | SCSIRequest *req; | |
499 | ||
7267c094 | 500 | req = g_malloc0(reqops->size); |
5c6c0e51 | 501 | req->refcount = 1; |
89b08ae1 GH |
502 | req->bus = scsi_bus_from_device(d); |
503 | req->dev = d; | |
504 | req->tag = tag; | |
505 | req->lun = lun; | |
c5bf71a9 | 506 | req->hba_private = hba_private; |
ed3a34a3 | 507 | req->status = -1; |
b45ef674 | 508 | req->sense_len = 0; |
8dbd4574 | 509 | req->ops = reqops; |
5138efec | 510 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
511 | return req; |
512 | } | |
513 | ||
c5bf71a9 | 514 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 515 | uint8_t *buf, void *hba_private) |
43a2b339 | 516 | { |
6dc06f08 | 517 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
c39ce112 | 518 | SCSIRequest *req; |
afa46c46 PB |
519 | SCSICommand cmd; |
520 | ||
521 | if (scsi_req_parse(&cmd, d, buf) != 0) { | |
522 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); | |
523 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
524 | } else { | |
525 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], | |
526 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 527 | if (cmd.lba != -1) { |
afa46c46 PB |
528 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
529 | cmd.lba); | |
530 | } | |
fdaef069 | 531 | |
12a08998 PB |
532 | if (cmd.xfer > INT32_MAX) { |
533 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
534 | } else if ((d->unit_attention.key == UNIT_ATTENTION || | |
535 | bus->unit_attention.key == UNIT_ATTENTION) && | |
536 | (buf[0] != INQUIRY && | |
537 | buf[0] != REPORT_LUNS && | |
538 | buf[0] != GET_CONFIGURATION && | |
539 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
540 | ||
541 | /* | |
542 | * If we already have a pending unit attention condition, | |
543 | * report this one before triggering another one. | |
544 | */ | |
545 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
6dc06f08 PB |
546 | req = scsi_req_alloc(&reqops_unit_attention, d, tag, lun, |
547 | hba_private); | |
548 | } else if (lun != d->lun || | |
739df215 | 549 | buf[0] == REPORT_LUNS || |
f3b338ef | 550 | (buf[0] == REQUEST_SENSE && (d->sense_len || cmd.xfer < 4))) { |
fdaef069 PB |
551 | req = scsi_req_alloc(&reqops_target_command, d, tag, lun, |
552 | hba_private); | |
553 | } else { | |
b9eea3e6 | 554 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 555 | } |
afa46c46 PB |
556 | } |
557 | ||
558 | req->cmd = cmd; | |
01e95455 PB |
559 | req->resid = req->cmd.xfer; |
560 | ||
98254542 PB |
561 | switch (buf[0]) { |
562 | case INQUIRY: | |
563 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
564 | break; | |
565 | case TEST_UNIT_READY: | |
566 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
567 | break; | |
568 | case REPORT_LUNS: | |
569 | trace_scsi_report_luns(d->id, lun, tag); | |
570 | break; | |
571 | case REQUEST_SENSE: | |
572 | trace_scsi_request_sense(d->id, lun, tag); | |
573 | break; | |
574 | default: | |
575 | break; | |
576 | } | |
577 | ||
c39ce112 | 578 | return req; |
43a2b339 PB |
579 | } |
580 | ||
0c34459b PB |
581 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
582 | { | |
12010e7b | 583 | return req->ops->get_buf(req); |
0c34459b PB |
584 | } |
585 | ||
6dc06f08 PB |
586 | static void scsi_clear_unit_attention(SCSIRequest *req) |
587 | { | |
588 | SCSISense *ua; | |
589 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
590 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
591 | return; | |
592 | } | |
593 | ||
594 | /* | |
595 | * If an INQUIRY command enters the enabled command state, | |
596 | * the device server shall [not] clear any unit attention condition; | |
597 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
598 | */ | |
599 | if (req->cmd.buf[0] == INQUIRY || | |
600 | req->cmd.buf[0] == GET_CONFIGURATION || | |
601 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
602 | return; | |
603 | } | |
604 | ||
605 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
606 | ua = &req->dev->unit_attention; | |
607 | } else { | |
608 | ua = &req->bus->unit_attention; | |
609 | } | |
610 | ||
611 | /* | |
612 | * If a REPORT LUNS command enters the enabled command state, [...] | |
613 | * the device server shall clear any pending unit attention condition | |
614 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
615 | */ | |
616 | if (req->cmd.buf[0] == REPORT_LUNS && | |
617 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
618 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
619 | return; | |
620 | } | |
621 | ||
622 | *ua = SENSE_CODE(NO_SENSE); | |
623 | } | |
624 | ||
74382217 HR |
625 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
626 | { | |
6dc06f08 PB |
627 | int ret; |
628 | ||
b45ef674 PB |
629 | assert(len >= 14); |
630 | if (!req->sense_len) { | |
74382217 HR |
631 | return 0; |
632 | } | |
6dc06f08 PB |
633 | |
634 | ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true); | |
635 | ||
636 | /* | |
637 | * FIXME: clearing unit attention conditions upon autosense should be done | |
638 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
639 | * (SAM-5, 5.14). | |
640 | * | |
641 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
642 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 643 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 644 | */ |
3653d8c4 | 645 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 646 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
647 | req->dev->sense_len = 0; |
648 | req->dev->sense_is_ua = false; | |
649 | } | |
6dc06f08 | 650 | return ret; |
b45ef674 PB |
651 | } |
652 | ||
653 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
654 | { | |
655 | return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed); | |
656 | } | |
657 | ||
658 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
659 | { | |
660 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
661 | sense.key, sense.asc, sense.ascq); | |
662 | memset(req->sense, 0, 18); | |
663 | req->sense[0] = 0xf0; | |
664 | req->sense[2] = sense.key; | |
eae31cb9 | 665 | req->sense[7] = 10; |
b45ef674 PB |
666 | req->sense[12] = sense.asc; |
667 | req->sense[13] = sense.ascq; | |
668 | req->sense_len = 18; | |
74382217 HR |
669 | } |
670 | ||
63f740dd | 671 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 672 | { |
5c6c0e51 HR |
673 | assert(!req->enqueued); |
674 | scsi_req_ref(req); | |
3d5aba97 PB |
675 | if (req->bus->info->get_sg_list) { |
676 | req->sg = req->bus->info->get_sg_list(req); | |
677 | } else { | |
678 | req->sg = NULL; | |
679 | } | |
5c6c0e51 HR |
680 | req->enqueued = true; |
681 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 682 | } |
fc4f0754 | 683 | |
63f740dd PB |
684 | int32_t scsi_req_enqueue(SCSIRequest *req) |
685 | { | |
686 | int32_t rc; | |
687 | ||
688 | assert(!req->retry); | |
689 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 690 | scsi_req_ref(req); |
c39ce112 | 691 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
692 | scsi_req_unref(req); |
693 | return rc; | |
89b08ae1 GH |
694 | } |
695 | ||
a1f0cce2 | 696 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 697 | { |
5138efec | 698 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 699 | req->retry = false; |
e8637c90 JK |
700 | if (req->enqueued) { |
701 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
702 | req->enqueued = false; | |
ad2d30f7 | 703 | scsi_req_unref(req); |
e8637c90 JK |
704 | } |
705 | } | |
706 | ||
06b86357 PB |
707 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
708 | { | |
709 | /* MMC-6, paragraph 6.7. */ | |
710 | switch (type) { | |
711 | case 0: | |
712 | if ((data_type & 3) == 0) { | |
713 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
714 | return 16 * num_desc + 8; | |
715 | } else { | |
716 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
717 | return 6 * num_desc + 8; | |
718 | } | |
719 | case 1: | |
720 | case 4: | |
721 | case 5: | |
722 | return 8 * num_desc + 8; | |
723 | case 2: | |
724 | return 2048 * num_desc + 8; | |
725 | case 3: | |
726 | return 16 * num_desc + 8; | |
727 | default: | |
728 | return 8; | |
729 | } | |
730 | } | |
731 | ||
2599aece | 732 | static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 733 | { |
2599aece | 734 | switch (buf[0] >> 5) { |
2ec749cb | 735 | case 0: |
2599aece PB |
736 | cmd->xfer = buf[4]; |
737 | cmd->len = 6; | |
2ec749cb | 738 | /* length 0 means 256 blocks */ |
2599aece PB |
739 | if (cmd->xfer == 0) { |
740 | cmd->xfer = 256; | |
741 | } | |
2ec749cb GH |
742 | break; |
743 | case 1: | |
744 | case 2: | |
bd5da232 | 745 | cmd->xfer = lduw_be_p(&buf[7]); |
2599aece | 746 | cmd->len = 10; |
2ec749cb GH |
747 | break; |
748 | case 4: | |
06b86357 | 749 | cmd->xfer = ldl_be_p(&buf[10]) & 0xffffffffULL; |
2599aece | 750 | cmd->len = 16; |
2ec749cb GH |
751 | break; |
752 | case 5: | |
06b86357 | 753 | cmd->xfer = ldl_be_p(&buf[6]) & 0xffffffffULL; |
2599aece | 754 | cmd->len = 12; |
2ec749cb GH |
755 | break; |
756 | default: | |
757 | return -1; | |
758 | } | |
759 | ||
2599aece | 760 | switch (buf[0]) { |
2ec749cb | 761 | case TEST_UNIT_READY: |
5e30a07d | 762 | case REWIND: |
2ec749cb | 763 | case START_STOP: |
00a01ad4 | 764 | case SET_CAPACITY: |
2ec749cb | 765 | case WRITE_FILEMARKS: |
06b86357 | 766 | case WRITE_FILEMARKS_16: |
2ec749cb | 767 | case SPACE: |
a5e3d9ef BK |
768 | case RESERVE: |
769 | case RELEASE: | |
2ec749cb GH |
770 | case ERASE: |
771 | case ALLOW_MEDIUM_REMOVAL: | |
5e30a07d | 772 | case VERIFY_10: |
2ec749cb GH |
773 | case SEEK_10: |
774 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
775 | case SYNCHRONIZE_CACHE_16: |
776 | case LOCATE_16: | |
2ec749cb GH |
777 | case LOCK_UNLOCK_CACHE: |
778 | case LOAD_UNLOAD: | |
779 | case SET_CD_SPEED: | |
780 | case SET_LIMITS: | |
5e30a07d | 781 | case WRITE_LONG_10: |
2ec749cb GH |
782 | case MOVE_MEDIUM: |
783 | case UPDATE_BLOCK: | |
06b86357 PB |
784 | case RESERVE_TRACK: |
785 | case SET_READ_AHEAD: | |
786 | case PRE_FETCH: | |
787 | case PRE_FETCH_16: | |
788 | case ALLOW_OVERWRITE: | |
2599aece | 789 | cmd->xfer = 0; |
2ec749cb GH |
790 | break; |
791 | case MODE_SENSE: | |
792 | break; | |
5e30a07d | 793 | case WRITE_SAME_10: |
2599aece | 794 | cmd->xfer = 1; |
2ec749cb | 795 | break; |
5e30a07d | 796 | case READ_CAPACITY_10: |
2599aece | 797 | cmd->xfer = 8; |
2ec749cb GH |
798 | break; |
799 | case READ_BLOCK_LIMITS: | |
2599aece | 800 | cmd->xfer = 6; |
2ec749cb | 801 | break; |
2ec749cb | 802 | case SEND_VOLUME_TAG: |
06b86357 PB |
803 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
804 | if (dev->type == TYPE_ROM) { | |
805 | cmd->xfer = buf[10] | (buf[9] << 8); | |
806 | } else { | |
807 | cmd->xfer = buf[9] | (buf[8] << 8); | |
808 | } | |
2ec749cb GH |
809 | break; |
810 | case WRITE_10: | |
5e30a07d | 811 | case WRITE_VERIFY_10: |
2ec749cb GH |
812 | case WRITE_6: |
813 | case WRITE_12: | |
814 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
815 | case WRITE_16: |
816 | case WRITE_VERIFY_16: | |
2599aece | 817 | cmd->xfer *= dev->blocksize; |
2ec749cb GH |
818 | break; |
819 | case READ_10: | |
820 | case READ_6: | |
821 | case READ_REVERSE: | |
822 | case RECOVER_BUFFERED_DATA: | |
823 | case READ_12: | |
bd536cf3 | 824 | case READ_16: |
2599aece | 825 | cmd->xfer *= dev->blocksize; |
2ec749cb | 826 | break; |
06b86357 PB |
827 | case FORMAT_UNIT: |
828 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
829 | * for block devices are restricted to the header right now. */ | |
830 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
831 | cmd->xfer = 12; | |
832 | } else { | |
833 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
834 | } | |
835 | break; | |
2ec749cb | 836 | case INQUIRY: |
06b86357 PB |
837 | case RECEIVE_DIAGNOSTIC: |
838 | case SEND_DIAGNOSTIC: | |
2599aece | 839 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 840 | break; |
06b86357 PB |
841 | case READ_CD: |
842 | case READ_BUFFER: | |
843 | case WRITE_BUFFER: | |
844 | case SEND_CUE_SHEET: | |
845 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
846 | break; | |
847 | case PERSISTENT_RESERVE_OUT: | |
848 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
849 | break; | |
850 | case ERASE_12: | |
851 | if (dev->type == TYPE_ROM) { | |
852 | /* MMC command GET PERFORMANCE. */ | |
853 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
854 | buf[10], buf[1] & 0x1f); | |
855 | } | |
856 | break; | |
857 | case MECHANISM_STATUS: | |
858 | case READ_DVD_STRUCTURE: | |
859 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
860 | case MAINTENANCE_OUT: |
861 | case MAINTENANCE_IN: | |
2599aece | 862 | if (dev->type == TYPE_ROM) { |
c7126d5b | 863 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 864 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
865 | } |
866 | break; | |
2ec749cb GH |
867 | } |
868 | return 0; | |
869 | } | |
870 | ||
2599aece | 871 | static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 872 | { |
2599aece | 873 | switch (buf[0]) { |
2ec749cb | 874 | /* stream commands */ |
06b86357 PB |
875 | case ERASE_12: |
876 | case ERASE_16: | |
877 | cmd->xfer = 0; | |
878 | break; | |
2ec749cb GH |
879 | case READ_6: |
880 | case READ_REVERSE: | |
881 | case RECOVER_BUFFERED_DATA: | |
882 | case WRITE_6: | |
2599aece PB |
883 | cmd->len = 6; |
884 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); | |
885 | if (buf[1] & 0x01) { /* fixed */ | |
886 | cmd->xfer *= dev->blocksize; | |
887 | } | |
2ec749cb GH |
888 | break; |
889 | case REWIND: | |
890 | case START_STOP: | |
2599aece PB |
891 | cmd->len = 6; |
892 | cmd->xfer = 0; | |
2ec749cb | 893 | break; |
06b86357 PB |
894 | case SPACE_16: |
895 | cmd->xfer = buf[13] | (buf[12] << 8); | |
896 | break; | |
897 | case READ_POSITION: | |
898 | cmd->xfer = buf[8] | (buf[7] << 8); | |
899 | break; | |
900 | case FORMAT_UNIT: | |
901 | cmd->xfer = buf[4] | (buf[3] << 8); | |
902 | break; | |
2ec749cb GH |
903 | /* generic commands */ |
904 | default: | |
2599aece | 905 | return scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
906 | } |
907 | return 0; | |
908 | } | |
909 | ||
2599aece | 910 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 911 | { |
2599aece | 912 | switch (cmd->buf[0]) { |
97a06435 GH |
913 | case WRITE_6: |
914 | case WRITE_10: | |
5e30a07d | 915 | case WRITE_VERIFY_10: |
97a06435 GH |
916 | case WRITE_12: |
917 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
918 | case WRITE_16: |
919 | case WRITE_VERIFY_16: | |
97a06435 GH |
920 | case COPY: |
921 | case COPY_VERIFY: | |
922 | case COMPARE: | |
923 | case CHANGE_DEFINITION: | |
924 | case LOG_SELECT: | |
925 | case MODE_SELECT: | |
926 | case MODE_SELECT_10: | |
927 | case SEND_DIAGNOSTIC: | |
928 | case WRITE_BUFFER: | |
929 | case FORMAT_UNIT: | |
930 | case REASSIGN_BLOCKS: | |
97a06435 GH |
931 | case SEARCH_EQUAL: |
932 | case SEARCH_HIGH: | |
933 | case SEARCH_LOW: | |
934 | case UPDATE_BLOCK: | |
5e30a07d HR |
935 | case WRITE_LONG_10: |
936 | case WRITE_SAME_10: | |
97a06435 GH |
937 | case SEARCH_HIGH_12: |
938 | case SEARCH_EQUAL_12: | |
939 | case SEARCH_LOW_12: | |
97a06435 GH |
940 | case MEDIUM_SCAN: |
941 | case SEND_VOLUME_TAG: | |
06b86357 PB |
942 | case SEND_CUE_SHEET: |
943 | case SEND_DVD_STRUCTURE: | |
01bedeba | 944 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 945 | case MAINTENANCE_OUT: |
2599aece | 946 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 GH |
947 | break; |
948 | default: | |
2599aece PB |
949 | if (cmd->xfer) |
950 | cmd->mode = SCSI_XFER_FROM_DEV; | |
97a06435 | 951 | else { |
2599aece | 952 | cmd->mode = SCSI_XFER_NONE; |
97a06435 GH |
953 | } |
954 | break; | |
955 | } | |
956 | } | |
957 | ||
2599aece | 958 | static uint64_t scsi_cmd_lba(SCSICommand *cmd) |
2ec749cb | 959 | { |
2599aece | 960 | uint8_t *buf = cmd->buf; |
2ec749cb GH |
961 | uint64_t lba; |
962 | ||
963 | switch (buf[0] >> 5) { | |
964 | case 0: | |
bd5da232 | 965 | lba = ldl_be_p(&buf[0]) & 0x1fffff; |
2ec749cb GH |
966 | break; |
967 | case 1: | |
968 | case 2: | |
bd5da232 | 969 | case 5: |
06b86357 | 970 | lba = ldl_be_p(&buf[2]) & 0xffffffffULL; |
2ec749cb GH |
971 | break; |
972 | case 4: | |
bd5da232 | 973 | lba = ldq_be_p(&buf[2]); |
2ec749cb GH |
974 | break; |
975 | default: | |
976 | lba = -1; | |
977 | ||
978 | } | |
979 | return lba; | |
980 | } | |
981 | ||
afa46c46 | 982 | int scsi_req_parse(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb GH |
983 | { |
984 | int rc; | |
985 | ||
afa46c46 PB |
986 | if (dev->type == TYPE_TAPE) { |
987 | rc = scsi_req_stream_length(cmd, dev, buf); | |
2ec749cb | 988 | } else { |
afa46c46 | 989 | rc = scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
990 | } |
991 | if (rc != 0) | |
992 | return rc; | |
993 | ||
afa46c46 PB |
994 | memcpy(cmd->buf, buf, cmd->len); |
995 | scsi_cmd_xfer_mode(cmd); | |
996 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
997 | return 0; |
998 | } | |
ed3a34a3 | 999 | |
a1f0cce2 HR |
1000 | /* |
1001 | * Predefined sense codes | |
1002 | */ | |
1003 | ||
1004 | /* No sense data available */ | |
1005 | const struct SCSISense sense_code_NO_SENSE = { | |
1006 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 | |
1007 | }; | |
1008 | ||
1009 | /* LUN not ready, Manual intervention required */ | |
1010 | const struct SCSISense sense_code_LUN_NOT_READY = { | |
1011 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 | |
1012 | }; | |
1013 | ||
1014 | /* LUN not ready, Medium not present */ | |
1015 | const struct SCSISense sense_code_NO_MEDIUM = { | |
1016 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 | |
1017 | }; | |
1018 | ||
68bb01f3 MA |
1019 | /* LUN not ready, medium removal prevented */ |
1020 | const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = { | |
1021 | .key = NOT_READY, .asc = 0x53, .ascq = 0x00 | |
1022 | }; | |
1023 | ||
a1f0cce2 HR |
1024 | /* Hardware error, internal target failure */ |
1025 | const struct SCSISense sense_code_TARGET_FAILURE = { | |
1026 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 | |
1027 | }; | |
1028 | ||
1029 | /* Illegal request, invalid command operation code */ | |
1030 | const struct SCSISense sense_code_INVALID_OPCODE = { | |
1031 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 | |
1032 | }; | |
1033 | ||
1034 | /* Illegal request, LBA out of range */ | |
1035 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { | |
1036 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 | |
1037 | }; | |
1038 | ||
1039 | /* Illegal request, Invalid field in CDB */ | |
1040 | const struct SCSISense sense_code_INVALID_FIELD = { | |
1041 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 | |
1042 | }; | |
1043 | ||
1044 | /* Illegal request, LUN not supported */ | |
1045 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { | |
1046 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 | |
1047 | }; | |
1048 | ||
a872a304 PB |
1049 | /* Illegal request, Saving parameters not supported */ |
1050 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { | |
1051 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 | |
1052 | }; | |
1053 | ||
1054 | /* Illegal request, Incompatible medium installed */ | |
67cc61e4 | 1055 | const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = { |
a872a304 PB |
1056 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 |
1057 | }; | |
1058 | ||
68bb01f3 MA |
1059 | /* Illegal request, medium removal prevented */ |
1060 | const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = { | |
1061 | .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x00 | |
1062 | }; | |
1063 | ||
a1f0cce2 HR |
1064 | /* Command aborted, I/O process terminated */ |
1065 | const struct SCSISense sense_code_IO_ERROR = { | |
1066 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 | |
1067 | }; | |
1068 | ||
1069 | /* Command aborted, I_T Nexus loss occurred */ | |
1070 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { | |
1071 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 | |
1072 | }; | |
1073 | ||
1074 | /* Command aborted, Logical Unit failure */ | |
1075 | const struct SCSISense sense_code_LUN_FAILURE = { | |
1076 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 | |
1077 | }; | |
1078 | ||
a872a304 PB |
1079 | /* Unit attention, Power on, reset or bus device reset occurred */ |
1080 | const struct SCSISense sense_code_RESET = { | |
1081 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 | |
1082 | }; | |
1083 | ||
8a9c16f6 PB |
1084 | /* Unit attention, No medium */ |
1085 | const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = { | |
1086 | .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00 | |
1087 | }; | |
1088 | ||
a872a304 PB |
1089 | /* Unit attention, Medium may have changed */ |
1090 | const struct SCSISense sense_code_MEDIUM_CHANGED = { | |
1091 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 | |
1092 | }; | |
1093 | ||
1094 | /* Unit attention, Reported LUNs data has changed */ | |
1095 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { | |
1096 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e | |
1097 | }; | |
1098 | ||
1099 | /* Unit attention, Device internal reset */ | |
1100 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { | |
1101 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 | |
1102 | }; | |
1103 | ||
a1f0cce2 HR |
1104 | /* |
1105 | * scsi_build_sense | |
1106 | * | |
b45ef674 | 1107 | * Convert between fixed and descriptor sense buffers |
a1f0cce2 | 1108 | */ |
b45ef674 PB |
1109 | int scsi_build_sense(uint8_t *in_buf, int in_len, |
1110 | uint8_t *buf, int len, bool fixed) | |
a1f0cce2 | 1111 | { |
b45ef674 PB |
1112 | bool fixed_in; |
1113 | SCSISense sense; | |
a1f0cce2 HR |
1114 | if (!fixed && len < 8) { |
1115 | return 0; | |
1116 | } | |
1117 | ||
b45ef674 PB |
1118 | if (in_len == 0) { |
1119 | sense.key = NO_SENSE; | |
1120 | sense.asc = 0; | |
1121 | sense.ascq = 0; | |
1122 | } else { | |
1123 | fixed_in = (in_buf[0] & 2) == 0; | |
1124 | ||
1125 | if (fixed == fixed_in) { | |
1126 | memcpy(buf, in_buf, MIN(len, in_len)); | |
1127 | return MIN(len, in_len); | |
1128 | } | |
1129 | ||
1130 | if (fixed_in) { | |
1131 | sense.key = in_buf[2]; | |
1132 | sense.asc = in_buf[12]; | |
1133 | sense.ascq = in_buf[13]; | |
1134 | } else { | |
1135 | sense.key = in_buf[1]; | |
1136 | sense.asc = in_buf[2]; | |
1137 | sense.ascq = in_buf[3]; | |
1138 | } | |
1139 | } | |
1140 | ||
a1f0cce2 HR |
1141 | memset(buf, 0, len); |
1142 | if (fixed) { | |
1143 | /* Return fixed format sense buffer */ | |
1144 | buf[0] = 0xf0; | |
1145 | buf[2] = sense.key; | |
eae31cb9 | 1146 | buf[7] = 10; |
a1f0cce2 HR |
1147 | buf[12] = sense.asc; |
1148 | buf[13] = sense.ascq; | |
1149 | return MIN(len, 18); | |
1150 | } else { | |
1151 | /* Return descriptor format sense buffer */ | |
1152 | buf[0] = 0x72; | |
1153 | buf[1] = sense.key; | |
1154 | buf[2] = sense.asc; | |
1155 | buf[3] = sense.ascq; | |
1156 | return 8; | |
1157 | } | |
1158 | } | |
1159 | ||
ec766865 GH |
1160 | static const char *scsi_command_name(uint8_t cmd) |
1161 | { | |
1162 | static const char *names[] = { | |
1163 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", | |
5e30a07d | 1164 | [ REWIND ] = "REWIND", |
ec766865 GH |
1165 | [ REQUEST_SENSE ] = "REQUEST_SENSE", |
1166 | [ FORMAT_UNIT ] = "FORMAT_UNIT", | |
1167 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", | |
1168 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS", | |
1169 | [ READ_6 ] = "READ_6", | |
1170 | [ WRITE_6 ] = "WRITE_6", | |
00a01ad4 | 1171 | [ SET_CAPACITY ] = "SET_CAPACITY", |
ec766865 GH |
1172 | [ READ_REVERSE ] = "READ_REVERSE", |
1173 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", | |
1174 | [ SPACE ] = "SPACE", | |
1175 | [ INQUIRY ] = "INQUIRY", | |
1176 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", | |
c7126d5b NB |
1177 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", |
1178 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
ec766865 GH |
1179 | [ MODE_SELECT ] = "MODE_SELECT", |
1180 | [ RESERVE ] = "RESERVE", | |
1181 | [ RELEASE ] = "RELEASE", | |
1182 | [ COPY ] = "COPY", | |
1183 | [ ERASE ] = "ERASE", | |
1184 | [ MODE_SENSE ] = "MODE_SENSE", | |
1185 | [ START_STOP ] = "START_STOP", | |
1186 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", | |
1187 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", | |
1188 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", | |
5e30a07d | 1189 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", |
ec766865 GH |
1190 | [ READ_10 ] = "READ_10", |
1191 | [ WRITE_10 ] = "WRITE_10", | |
1192 | [ SEEK_10 ] = "SEEK_10", | |
5e30a07d HR |
1193 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", |
1194 | [ VERIFY_10 ] = "VERIFY_10", | |
ec766865 GH |
1195 | [ SEARCH_HIGH ] = "SEARCH_HIGH", |
1196 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", | |
1197 | [ SEARCH_LOW ] = "SEARCH_LOW", | |
1198 | [ SET_LIMITS ] = "SET_LIMITS", | |
00a01ad4 | 1199 | [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION", |
545557d4 | 1200 | /* READ_POSITION and PRE_FETCH use the same operation code */ |
ec766865 GH |
1201 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", |
1202 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", | |
1203 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA", | |
1204 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", | |
1205 | [ COMPARE ] = "COMPARE", | |
1206 | [ COPY_VERIFY ] = "COPY_VERIFY", | |
1207 | [ WRITE_BUFFER ] = "WRITE_BUFFER", | |
1208 | [ READ_BUFFER ] = "READ_BUFFER", | |
1209 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", | |
5e30a07d HR |
1210 | [ READ_LONG_10 ] = "READ_LONG_10", |
1211 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", | |
ec766865 | 1212 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", |
5e30a07d HR |
1213 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", |
1214 | [ UNMAP ] = "UNMAP", | |
ec766865 | 1215 | [ READ_TOC ] = "READ_TOC", |
5e30a07d | 1216 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", |
3e46d87d | 1217 | [ SANITIZE ] = "SANITIZE", |
5e30a07d | 1218 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", |
ec766865 GH |
1219 | [ LOG_SELECT ] = "LOG_SELECT", |
1220 | [ LOG_SENSE ] = "LOG_SENSE", | |
1221 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", | |
1222 | [ RESERVE_10 ] = "RESERVE_10", | |
1223 | [ RELEASE_10 ] = "RELEASE_10", | |
1224 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", | |
1225 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", | |
1226 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", | |
5e30a07d HR |
1227 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", |
1228 | [ EXTENDED_COPY ] = "EXTENDED_COPY", | |
1229 | [ ATA_PASSTHROUGH ] = "ATA_PASSTHROUGH", | |
1230 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", | |
1231 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", | |
1232 | [ READ_16 ] = "READ_16", | |
1233 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", | |
1234 | [ WRITE_16 ] = "WRITE_16", | |
1235 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", | |
1236 | [ VERIFY_16 ] = "VERIFY_16", | |
00a01ad4 PB |
1237 | [ PRE_FETCH_16 ] = "PRE_FETCH_16", |
1238 | [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16", | |
1239 | /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */ | |
5e30a07d | 1240 | [ LOCATE_16 ] = "LOCATE_16", |
00a01ad4 | 1241 | [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16", |
48bb9f53 | 1242 | /* ERASE_16 and WRITE_SAME_16 use the same operation code */ |
f6515262 | 1243 | [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16", |
5e30a07d HR |
1244 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", |
1245 | [ REPORT_LUNS ] = "REPORT_LUNS", | |
1246 | [ BLANK ] = "BLANK", | |
ec766865 | 1247 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", |
5e30a07d | 1248 | [ LOAD_UNLOAD ] = "LOAD_UNLOAD", |
ec766865 GH |
1249 | [ READ_12 ] = "READ_12", |
1250 | [ WRITE_12 ] = "WRITE_12", | |
00a01ad4 PB |
1251 | [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE", |
1252 | /* ERASE_12 and GET_PERFORMANCE use the same operation code */ | |
f6515262 | 1253 | [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12", |
ec766865 | 1254 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", |
5e30a07d | 1255 | [ VERIFY_12 ] = "VERIFY_12", |
ec766865 GH |
1256 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", |
1257 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", | |
1258 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", | |
1259 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", | |
00a01ad4 PB |
1260 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING", |
1261 | /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */ | |
1262 | [ READ_CD ] = "READ_CD", | |
5e30a07d | 1263 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", |
00a01ad4 PB |
1264 | [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE", |
1265 | [ RESERVE_TRACK ] = "RESERVE_TRACK", | |
1266 | [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET", | |
1267 | [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE", | |
ec766865 | 1268 | [ SET_CD_SPEED ] = "SET_CD_SPEED", |
00a01ad4 PB |
1269 | [ SET_READ_AHEAD ] = "SET_READ_AHEAD", |
1270 | [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE", | |
1271 | [ MECHANISM_STATUS ] = "MECHANISM_STATUS", | |
ec766865 GH |
1272 | }; |
1273 | ||
1274 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) | |
1275 | return "*UNKNOWN*"; | |
1276 | return names[cmd]; | |
1277 | } | |
1278 | ||
ad2d30f7 PB |
1279 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1280 | { | |
1281 | req->refcount++; | |
1282 | return req; | |
1283 | } | |
1284 | ||
1285 | void scsi_req_unref(SCSIRequest *req) | |
1286 | { | |
1287 | if (--req->refcount == 0) { | |
12010e7b PB |
1288 | if (req->ops->free_req) { |
1289 | req->ops->free_req(req); | |
ad2d30f7 | 1290 | } |
7267c094 | 1291 | g_free(req); |
ad2d30f7 PB |
1292 | } |
1293 | } | |
1294 | ||
ad3376cc PB |
1295 | /* Tell the device that we finished processing this chunk of I/O. It |
1296 | will start the next chunk or complete the command. */ | |
1297 | void scsi_req_continue(SCSIRequest *req) | |
1298 | { | |
1299 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); | |
1300 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1301 | req->ops->write_data(req); |
ad3376cc | 1302 | } else { |
12010e7b | 1303 | req->ops->read_data(req); |
ad3376cc PB |
1304 | } |
1305 | } | |
1306 | ||
ab9adc88 PB |
1307 | /* Called by the devices when data is ready for the HBA. The HBA should |
1308 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1309 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1310 | void scsi_req_data(SCSIRequest *req, int len) |
1311 | { | |
3d5aba97 | 1312 | uint8_t *buf; |
e88c591d PB |
1313 | if (req->io_canceled) { |
1314 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1315 | return; |
e88c591d | 1316 | } |
01e95455 PB |
1317 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1318 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1319 | if (!req->sg) { |
1320 | req->resid -= len; | |
1321 | req->bus->info->transfer_data(req, len); | |
1322 | return; | |
1323 | } | |
1324 | ||
1325 | /* If the device calls scsi_req_data and the HBA specified a | |
1326 | * scatter/gather list, the transfer has to happen in a single | |
1327 | * step. */ | |
1328 | assert(!req->dma_started); | |
1329 | req->dma_started = true; | |
1330 | ||
1331 | buf = scsi_req_get_buf(req); | |
1332 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1333 | req->resid = dma_buf_read(buf, len, req->sg); | |
1334 | } else { | |
1335 | req->resid = dma_buf_write(buf, len, req->sg); | |
1336 | } | |
1337 | scsi_req_continue(req); | |
ab9adc88 PB |
1338 | } |
1339 | ||
ec766865 GH |
1340 | void scsi_req_print(SCSIRequest *req) |
1341 | { | |
1342 | FILE *fp = stderr; | |
1343 | int i; | |
1344 | ||
1345 | fprintf(fp, "[%s id=%d] %s", | |
1346 | req->dev->qdev.parent_bus->name, | |
1347 | req->dev->id, | |
1348 | scsi_command_name(req->cmd.buf[0])); | |
1349 | for (i = 1; i < req->cmd.len; i++) { | |
1350 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1351 | } | |
1352 | switch (req->cmd.mode) { | |
1353 | case SCSI_XFER_NONE: | |
1354 | fprintf(fp, " - none\n"); | |
1355 | break; | |
1356 | case SCSI_XFER_FROM_DEV: | |
1357 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1358 | break; | |
1359 | case SCSI_XFER_TO_DEV: | |
1360 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1361 | break; | |
1362 | default: | |
1363 | fprintf(fp, " - Oops\n"); | |
1364 | break; | |
1365 | } | |
1366 | } | |
1367 | ||
682a9b21 | 1368 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1369 | { |
682a9b21 PB |
1370 | assert(req->status == -1); |
1371 | req->status = status; | |
b45ef674 PB |
1372 | |
1373 | assert(req->sense_len < sizeof(req->sense)); | |
1374 | if (status == GOOD) { | |
1375 | req->sense_len = 0; | |
1376 | } | |
1377 | ||
1378 | if (req->sense_len) { | |
1379 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1380 | req->dev->sense_len = req->sense_len; |
1381 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1382 | } else { | |
1383 | req->dev->sense_len = 0; | |
1384 | req->dev->sense_is_ua = false; | |
b45ef674 | 1385 | } |
b45ef674 | 1386 | |
6dc06f08 PB |
1387 | /* |
1388 | * Unit attention state is now stored in the device's sense buffer | |
1389 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1390 | * flags. | |
1391 | */ | |
1392 | scsi_clear_unit_attention(req); | |
1393 | ||
ad2d30f7 | 1394 | scsi_req_ref(req); |
e8637c90 | 1395 | scsi_req_dequeue(req); |
01e95455 | 1396 | req->bus->info->complete(req, req->status, req->resid); |
ad2d30f7 | 1397 | scsi_req_unref(req); |
ed3a34a3 | 1398 | } |
db07c0f8 | 1399 | |
94d3f98a PB |
1400 | void scsi_req_cancel(SCSIRequest *req) |
1401 | { | |
e88c591d PB |
1402 | if (!req->enqueued) { |
1403 | return; | |
94d3f98a PB |
1404 | } |
1405 | scsi_req_ref(req); | |
1406 | scsi_req_dequeue(req); | |
e88c591d PB |
1407 | req->io_canceled = true; |
1408 | if (req->ops->cancel_io) { | |
1409 | req->ops->cancel_io(req); | |
1410 | } | |
afd4030c PB |
1411 | if (req->bus->info->cancel) { |
1412 | req->bus->info->cancel(req); | |
94d3f98a PB |
1413 | } |
1414 | scsi_req_unref(req); | |
1415 | } | |
1416 | ||
19d110ab PB |
1417 | void scsi_req_abort(SCSIRequest *req, int status) |
1418 | { | |
e88c591d PB |
1419 | if (!req->enqueued) { |
1420 | return; | |
1421 | } | |
1422 | scsi_req_ref(req); | |
1423 | scsi_req_dequeue(req); | |
1424 | req->io_canceled = true; | |
12010e7b PB |
1425 | if (req->ops->cancel_io) { |
1426 | req->ops->cancel_io(req); | |
19d110ab | 1427 | } |
682a9b21 | 1428 | scsi_req_complete(req, status); |
e88c591d | 1429 | scsi_req_unref(req); |
19d110ab PB |
1430 | } |
1431 | ||
c7b48872 | 1432 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1433 | { |
1434 | SCSIRequest *req; | |
1435 | ||
1436 | while (!QTAILQ_EMPTY(&sdev->requests)) { | |
1437 | req = QTAILQ_FIRST(&sdev->requests); | |
94d3f98a | 1438 | scsi_req_cancel(req); |
c557e889 | 1439 | } |
c7b48872 | 1440 | sdev->unit_attention = sense; |
c557e889 PB |
1441 | } |
1442 | ||
baa1bd89 PB |
1443 | static char *scsibus_get_dev_path(DeviceState *dev) |
1444 | { | |
1445 | SCSIDevice *d = DO_UPCAST(SCSIDevice, qdev, dev); | |
1446 | DeviceState *hba = dev->parent_bus->parent; | |
1447 | char *id = NULL; | |
b7c8c35f | 1448 | char *path; |
baa1bd89 PB |
1449 | |
1450 | if (hba && hba->parent_bus && hba->parent_bus->info->get_dev_path) { | |
1451 | id = hba->parent_bus->info->get_dev_path(hba); | |
1452 | } | |
1453 | if (id) { | |
b7c8c35f | 1454 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1455 | } else { |
b7c8c35f | 1456 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1457 | } |
b7c8c35f PB |
1458 | g_free(id); |
1459 | return path; | |
baa1bd89 PB |
1460 | } |
1461 | ||
db07c0f8 GN |
1462 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1463 | { | |
b9eea3e6 | 1464 | SCSIDevice *d = SCSI_DEVICE(dev); |
db07c0f8 | 1465 | char path[100]; |
db07c0f8 | 1466 | |
795928f6 PB |
1467 | snprintf(path, sizeof(path), "channel@%x/%s@%x,%x", d->channel, |
1468 | qdev_fw_name(dev), d->id, d->lun); | |
db07c0f8 | 1469 | |
f48a7a6e PB |
1470 | return strdup(path); |
1471 | } | |
1472 | ||
0d3545e7 | 1473 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) |
f48a7a6e PB |
1474 | { |
1475 | DeviceState *qdev; | |
1476 | SCSIDevice *target_dev = NULL; | |
db07c0f8 | 1477 | |
f48a7a6e | 1478 | QTAILQ_FOREACH_REVERSE(qdev, &bus->qbus.children, ChildrenHead, sibling) { |
b9eea3e6 | 1479 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
db07c0f8 | 1480 | |
0d3545e7 | 1481 | if (dev->channel == channel && dev->id == id) { |
f48a7a6e PB |
1482 | if (dev->lun == lun) { |
1483 | return dev; | |
1484 | } | |
1485 | target_dev = dev; | |
1486 | } | |
1487 | } | |
1488 | return target_dev; | |
db07c0f8 | 1489 | } |
b9eea3e6 | 1490 | |
63f740dd PB |
1491 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1492 | ||
1493 | static void put_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1494 | { | |
1495 | SCSIDevice *s = pv; | |
1496 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1497 | SCSIRequest *req; | |
1498 | ||
1499 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1500 | assert(!req->io_canceled); | |
1501 | assert(req->status == -1); | |
1502 | assert(req->retry); | |
1503 | assert(req->enqueued); | |
1504 | ||
1505 | qemu_put_sbyte(f, 1); | |
1506 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); | |
1507 | qemu_put_be32s(f, &req->tag); | |
1508 | qemu_put_be32s(f, &req->lun); | |
1509 | if (bus->info->save_request) { | |
1510 | bus->info->save_request(f, req); | |
1511 | } | |
1512 | if (req->ops->save_request) { | |
1513 | req->ops->save_request(f, req); | |
1514 | } | |
1515 | } | |
1516 | qemu_put_sbyte(f, 0); | |
1517 | } | |
1518 | ||
1519 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1520 | { | |
1521 | SCSIDevice *s = pv; | |
1522 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1523 | ||
1524 | while (qemu_get_sbyte(f)) { | |
1525 | uint8_t buf[SCSI_CMD_BUF_SIZE]; | |
1526 | uint32_t tag; | |
1527 | uint32_t lun; | |
1528 | SCSIRequest *req; | |
1529 | ||
1530 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1531 | qemu_get_be32s(f, &tag); | |
1532 | qemu_get_be32s(f, &lun); | |
1533 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
1534 | if (bus->info->load_request) { | |
1535 | req->hba_private = bus->info->load_request(f, req); | |
1536 | } | |
1537 | if (req->ops->load_request) { | |
1538 | req->ops->load_request(f, req); | |
1539 | } | |
1540 | ||
1541 | /* Just restart it later. */ | |
1542 | req->retry = true; | |
1543 | scsi_req_enqueue_internal(req); | |
1544 | ||
1545 | /* At this point, the request will be kept alive by the reference | |
1546 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1547 | * The HBA of course will add its own reference in the load_request | |
1548 | * callback if it needs to hold on the SCSIRequest. | |
1549 | */ | |
1550 | scsi_req_unref(req); | |
1551 | } | |
1552 | ||
1553 | return 0; | |
1554 | } | |
1555 | ||
1556 | const VMStateInfo vmstate_info_scsi_requests = { | |
1557 | .name = "scsi-requests", | |
1558 | .get = get_scsi_requests, | |
1559 | .put = put_scsi_requests, | |
1560 | }; | |
1561 | ||
1562 | const VMStateDescription vmstate_scsi_device = { | |
1563 | .name = "SCSIDevice", | |
1564 | .version_id = 1, | |
1565 | .minimum_version_id = 1, | |
1566 | .minimum_version_id_old = 1, | |
1567 | .fields = (VMStateField[]) { | |
1568 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1569 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1570 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1571 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
1572 | VMSTATE_UINT8_ARRAY(sense, SCSIDevice, SCSI_SENSE_BUF_SIZE), | |
1573 | VMSTATE_UINT32(sense_len, SCSIDevice), | |
1574 | { | |
1575 | .name = "requests", | |
1576 | .version_id = 0, | |
1577 | .field_exists = NULL, | |
1578 | .size = 0, /* ouch */ | |
1579 | .info = &vmstate_info_scsi_requests, | |
1580 | .flags = VMS_SINGLE, | |
1581 | .offset = 0, | |
1582 | }, | |
1583 | VMSTATE_END_OF_LIST() | |
1584 | } | |
1585 | }; | |
1586 | ||
39bffca2 AL |
1587 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
1588 | { | |
1589 | DeviceClass *k = DEVICE_CLASS(klass); | |
1590 | k->bus_info = &scsi_bus_info; | |
1591 | k->init = scsi_qdev_init; | |
1592 | k->unplug = qdev_simple_unplug_cb; | |
1593 | k->exit = scsi_qdev_exit; | |
1594 | } | |
1595 | ||
b9eea3e6 AL |
1596 | static TypeInfo scsi_device_type_info = { |
1597 | .name = TYPE_SCSI_DEVICE, | |
1598 | .parent = TYPE_DEVICE, | |
1599 | .instance_size = sizeof(SCSIDevice), | |
1600 | .abstract = true, | |
1601 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 1602 | .class_init = scsi_device_class_init, |
b9eea3e6 AL |
1603 | }; |
1604 | ||
83f7d43a | 1605 | static void scsi_register_types(void) |
b9eea3e6 AL |
1606 | { |
1607 | type_register_static(&scsi_device_type_info); | |
1608 | } | |
1609 | ||
83f7d43a | 1610 | type_init(scsi_register_types) |