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