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a4ab4792 | 1 | #include "qemu/osdep.h" |
da34e65c | 2 | #include "qapi/error.h" |
1de7afc9 | 3 | #include "qemu/error-report.h" |
0b8fa32f | 4 | #include "qemu/module.h" |
922a01a0 | 5 | #include "qemu/option.h" |
a27bd6c7 | 6 | #include "hw/qdev-properties.h" |
0d09e41a | 7 | #include "hw/scsi/scsi.h" |
ca77ee28 | 8 | #include "migration/qemu-file-types.h" |
d6454270 | 9 | #include "migration/vmstate.h" |
08e2c9f1 | 10 | #include "scsi/constants.h" |
fa1d36df | 11 | #include "sysemu/block-backend.h" |
9c17d615 | 12 | #include "sysemu/blockdev.h" |
2f780b6a | 13 | #include "sysemu/sysemu.h" |
54d31236 | 14 | #include "sysemu/runstate.h" |
5138efec | 15 | #include "trace.h" |
9c17d615 | 16 | #include "sysemu/dma.h" |
f348b6d1 | 17 | #include "qemu/cutils.h" |
d52affa7 | 18 | |
baa1bd89 | 19 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 20 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
71544d30 | 21 | static void scsi_req_dequeue(SCSIRequest *req); |
84642435 AH |
22 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len); |
23 | static void scsi_target_free_buf(SCSIRequest *req); | |
db07c0f8 | 24 | |
d52affa7 GH |
25 | static int next_scsi_bus; |
26 | ||
8ddf958e PB |
27 | static SCSIDevice *do_scsi_device_find(SCSIBus *bus, |
28 | int channel, int id, int lun, | |
29 | bool include_unrealized) | |
30 | { | |
31 | BusChild *kid; | |
32 | SCSIDevice *retval = NULL; | |
33 | ||
34 | QTAILQ_FOREACH_RCU(kid, &bus->qbus.children, sibling) { | |
35 | DeviceState *qdev = kid->child; | |
36 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
37 | ||
38 | if (dev->channel == channel && dev->id == id) { | |
39 | if (dev->lun == lun) { | |
40 | retval = dev; | |
41 | break; | |
42 | } | |
43 | ||
44 | /* | |
45 | * If we don't find exact match (channel/bus/lun), | |
46 | * we will return the first device which matches channel/bus | |
47 | */ | |
48 | ||
49 | if (!retval) { | |
50 | retval = dev; | |
51 | } | |
52 | } | |
53 | } | |
54 | ||
55 | /* | |
56 | * This function might run on the IO thread and we might race against | |
57 | * main thread hot-plugging the device. | |
58 | * We assume that as soon as .realized is set to true we can let | |
59 | * the user access the device. | |
60 | */ | |
61 | ||
62 | if (retval && !include_unrealized && | |
63 | !qatomic_load_acquire(&retval->qdev.realized)) { | |
64 | retval = NULL; | |
65 | } | |
66 | ||
67 | return retval; | |
68 | } | |
69 | ||
70 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) | |
71 | { | |
72 | RCU_READ_LOCK_GUARD(); | |
73 | return do_scsi_device_find(bus, channel, id, lun, false); | |
74 | } | |
75 | ||
8ff34495 ML |
76 | SCSIDevice *scsi_device_get(SCSIBus *bus, int channel, int id, int lun) |
77 | { | |
78 | SCSIDevice *d; | |
79 | RCU_READ_LOCK_GUARD(); | |
80 | d = do_scsi_device_find(bus, channel, id, lun, false); | |
81 | if (d) { | |
82 | object_ref(d); | |
83 | } | |
84 | return d; | |
85 | } | |
86 | ||
a818a4b6 | 87 | static void scsi_device_realize(SCSIDevice *s, Error **errp) |
b9eea3e6 AL |
88 | { |
89 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
a818a4b6 FZ |
90 | if (sc->realize) { |
91 | sc->realize(s, errp); | |
b9eea3e6 | 92 | } |
b9eea3e6 AL |
93 | } |
94 | ||
b69c3c21 | 95 | static void scsi_device_unrealize(SCSIDevice *s) |
6b98c5aa SE |
96 | { |
97 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
98 | if (sc->unrealize) { | |
b69c3c21 | 99 | sc->unrealize(s); |
6b98c5aa SE |
100 | } |
101 | } | |
102 | ||
ff34c32c PB |
103 | int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, |
104 | void *hba_private) | |
105 | { | |
106 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
107 | int rc; | |
108 | ||
109 | assert(cmd->len == 0); | |
110 | rc = scsi_req_parse_cdb(dev, cmd, buf); | |
111 | if (bus->info->parse_cdb) { | |
112 | rc = bus->info->parse_cdb(dev, cmd, buf, hba_private); | |
113 | } | |
114 | return rc; | |
115 | } | |
116 | ||
b9eea3e6 AL |
117 | static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun, |
118 | uint8_t *buf, void *hba_private) | |
119 | { | |
120 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
121 | if (sc->alloc_req) { | |
122 | return sc->alloc_req(s, tag, lun, buf, hba_private); | |
123 | } | |
124 | ||
125 | return NULL; | |
126 | } | |
127 | ||
8d72db68 | 128 | void scsi_device_unit_attention_reported(SCSIDevice *s) |
b9eea3e6 AL |
129 | { |
130 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
131 | if (sc->unit_attention_reported) { | |
132 | sc->unit_attention_reported(s); | |
133 | } | |
134 | } | |
135 | ||
d52affa7 | 136 | /* Create a scsi bus, and attach devices to it. */ |
b1187b51 AF |
137 | void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host, |
138 | const SCSIBusInfo *info, const char *bus_name) | |
d52affa7 | 139 | { |
fb17dfe0 | 140 | qbus_create_inplace(bus, bus_size, TYPE_SCSI_BUS, host, bus_name); |
d52affa7 | 141 | bus->busnr = next_scsi_bus++; |
afd4030c | 142 | bus->info = info; |
cd7c8660 | 143 | qbus_set_bus_hotplug_handler(BUS(bus)); |
d52affa7 GH |
144 | } |
145 | ||
71544d30 PB |
146 | static void scsi_dma_restart_bh(void *opaque) |
147 | { | |
148 | SCSIDevice *s = opaque; | |
149 | SCSIRequest *req, *next; | |
150 | ||
151 | qemu_bh_delete(s->bh); | |
152 | s->bh = NULL; | |
153 | ||
1919631e | 154 | aio_context_acquire(blk_get_aio_context(s->conf.blk)); |
71544d30 PB |
155 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { |
156 | scsi_req_ref(req); | |
157 | if (req->retry) { | |
158 | req->retry = false; | |
159 | switch (req->cmd.mode) { | |
160 | case SCSI_XFER_FROM_DEV: | |
161 | case SCSI_XFER_TO_DEV: | |
162 | scsi_req_continue(req); | |
163 | break; | |
164 | case SCSI_XFER_NONE: | |
165 | scsi_req_dequeue(req); | |
166 | scsi_req_enqueue(req); | |
167 | break; | |
168 | } | |
169 | } | |
170 | scsi_req_unref(req); | |
171 | } | |
1919631e | 172 | aio_context_release(blk_get_aio_context(s->conf.blk)); |
cfd4e363 ML |
173 | /* Drop the reference that was acquired in scsi_dma_restart_cb */ |
174 | object_unref(OBJECT(s)); | |
71544d30 PB |
175 | } |
176 | ||
177 | void scsi_req_retry(SCSIRequest *req) | |
178 | { | |
179 | /* No need to save a reference, because scsi_dma_restart_bh just | |
180 | * looks at the request list. */ | |
181 | req->retry = true; | |
182 | } | |
183 | ||
538f0497 | 184 | static void scsi_dma_restart_cb(void *opaque, bool running, RunState state) |
71544d30 PB |
185 | { |
186 | SCSIDevice *s = opaque; | |
187 | ||
188 | if (!running) { | |
189 | return; | |
190 | } | |
191 | if (!s->bh) { | |
d223c104 | 192 | AioContext *ctx = blk_get_aio_context(s->conf.blk); |
cfd4e363 ML |
193 | /* The reference is dropped in scsi_dma_restart_bh.*/ |
194 | object_ref(OBJECT(s)); | |
d223c104 | 195 | s->bh = aio_bh_new(ctx, scsi_dma_restart_bh, s); |
71544d30 PB |
196 | qemu_bh_schedule(s->bh); |
197 | } | |
198 | } | |
199 | ||
42a90a89 PB |
200 | static bool scsi_bus_is_address_free(SCSIBus *bus, |
201 | int channel, int target, int lun, | |
202 | SCSIDevice **p_dev) | |
203 | { | |
8ddf958e PB |
204 | SCSIDevice *d; |
205 | ||
206 | RCU_READ_LOCK_GUARD(); | |
207 | d = do_scsi_device_find(bus, channel, target, lun, true); | |
42a90a89 PB |
208 | if (d && d->lun == lun) { |
209 | if (p_dev) { | |
210 | *p_dev = d; | |
211 | } | |
212 | return false; | |
213 | } | |
214 | if (p_dev) { | |
215 | *p_dev = NULL; | |
216 | } | |
217 | return true; | |
218 | } | |
219 | ||
220 | static bool scsi_bus_check_address(BusState *qbus, DeviceState *qdev, Error **errp) | |
d52affa7 | 221 | { |
b9eea3e6 | 222 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
42a90a89 | 223 | SCSIBus *bus = SCSI_BUS(qbus); |
d52affa7 | 224 | |
0d3545e7 | 225 | if (dev->channel > bus->info->max_channel) { |
a818a4b6 | 226 | error_setg(errp, "bad scsi channel id: %d", dev->channel); |
42a90a89 | 227 | return false; |
0d3545e7 | 228 | } |
7e0380b9 | 229 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
a818a4b6 | 230 | error_setg(errp, "bad scsi device id: %d", dev->id); |
42a90a89 | 231 | return false; |
d52affa7 | 232 | } |
d3d250bd | 233 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { |
a818a4b6 | 234 | error_setg(errp, "bad scsi device lun: %d", dev->lun); |
42a90a89 PB |
235 | return false; |
236 | } | |
237 | ||
238 | if (dev->id != -1 && dev->lun != -1) { | |
239 | SCSIDevice *d; | |
240 | if (!scsi_bus_is_address_free(bus, dev->channel, dev->id, dev->lun, &d)) { | |
241 | error_setg(errp, "lun already used by '%s'", d->qdev.id); | |
242 | return false; | |
243 | } | |
d3d250bd | 244 | } |
d52affa7 | 245 | |
42a90a89 PB |
246 | return true; |
247 | } | |
248 | ||
249 | static void scsi_qdev_realize(DeviceState *qdev, Error **errp) | |
250 | { | |
251 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
252 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
253 | bool is_free; | |
254 | Error *local_err = NULL; | |
255 | ||
7e0380b9 PB |
256 | if (dev->id == -1) { |
257 | int id = -1; | |
258 | if (dev->lun == -1) { | |
259 | dev->lun = 0; | |
260 | } | |
261 | do { | |
42a90a89 PB |
262 | is_free = scsi_bus_is_address_free(bus, dev->channel, ++id, dev->lun, NULL); |
263 | } while (!is_free && id < bus->info->max_target); | |
264 | if (!is_free) { | |
a818a4b6 FZ |
265 | error_setg(errp, "no free target"); |
266 | return; | |
7e0380b9 PB |
267 | } |
268 | dev->id = id; | |
269 | } else if (dev->lun == -1) { | |
270 | int lun = -1; | |
271 | do { | |
42a90a89 PB |
272 | is_free = scsi_bus_is_address_free(bus, dev->channel, dev->id, ++lun, NULL); |
273 | } while (!is_free && lun < bus->info->max_lun); | |
274 | if (!is_free) { | |
a818a4b6 FZ |
275 | error_setg(errp, "no free lun"); |
276 | return; | |
7e0380b9 PB |
277 | } |
278 | dev->lun = lun; | |
d52affa7 | 279 | } |
d52affa7 | 280 | |
9af99d98 | 281 | QTAILQ_INIT(&dev->requests); |
a818a4b6 FZ |
282 | scsi_device_realize(dev, &local_err); |
283 | if (local_err) { | |
284 | error_propagate(errp, local_err); | |
285 | return; | |
71544d30 | 286 | } |
1a8c091c SH |
287 | dev->vmsentry = qdev_add_vm_change_state_handler(DEVICE(dev), |
288 | scsi_dma_restart_cb, dev); | |
01985dcf GH |
289 | } |
290 | ||
b69c3c21 | 291 | static void scsi_qdev_unrealize(DeviceState *qdev) |
01985dcf | 292 | { |
b9eea3e6 | 293 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 294 | |
71544d30 PB |
295 | if (dev->vmsentry) { |
296 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
297 | } | |
fb7b5c0d PB |
298 | |
299 | scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE)); | |
6b98c5aa | 300 | |
b69c3c21 | 301 | scsi_device_unrealize(dev); |
6b98c5aa | 302 | |
fb7b5c0d | 303 | blockdev_mark_auto_del(dev->conf.blk); |
d52affa7 GH |
304 | } |
305 | ||
d52affa7 | 306 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
4be74634 | 307 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, |
76534da7 | 308 | int unit, bool removable, int bootindex, |
395b9539 | 309 | bool share_rw, |
b8efb36b KW |
310 | BlockdevOnError rerror, |
311 | BlockdevOnError werror, | |
caad4eb3 | 312 | const char *serial, Error **errp) |
d52affa7 GH |
313 | { |
314 | const char *driver; | |
22647504 | 315 | char *name; |
d52affa7 | 316 | DeviceState *dev; |
0d074bf8 | 317 | DriveInfo *dinfo; |
d52affa7 | 318 | |
0d074bf8 PB |
319 | if (blk_is_sg(blk)) { |
320 | driver = "scsi-generic"; | |
321 | } else { | |
322 | dinfo = blk_legacy_dinfo(blk); | |
323 | if (dinfo && dinfo->media_cd) { | |
324 | driver = "scsi-cd"; | |
325 | } else { | |
326 | driver = "scsi-hd"; | |
327 | } | |
328 | } | |
3e80f690 | 329 | dev = qdev_new(driver); |
22647504 | 330 | name = g_strdup_printf("legacy[%d]", unit); |
d2623129 | 331 | object_property_add_child(OBJECT(bus), name, OBJECT(dev)); |
22647504 PB |
332 | g_free(name); |
333 | ||
d52affa7 | 334 | qdev_prop_set_uint32(dev, "scsi-id", unit); |
ce4e7e46 | 335 | if (bootindex >= 0) { |
5325cc34 | 336 | object_property_set_int(OBJECT(dev), "bootindex", bootindex, |
8dece34f | 337 | &error_abort); |
ce4e7e46 | 338 | } |
efba1595 | 339 | if (object_property_find(OBJECT(dev), "removable")) { |
2d1fd261 SH |
340 | qdev_prop_set_bit(dev, "removable", removable); |
341 | } | |
efba1595 | 342 | if (serial && object_property_find(OBJECT(dev), "serial")) { |
76534da7 KW |
343 | qdev_prop_set_string(dev, "serial", serial); |
344 | } | |
668f62ec | 345 | if (!qdev_prop_set_drive_err(dev, "drive", blk, errp)) { |
02a5c4c9 | 346 | object_unparent(OBJECT(dev)); |
18846dee MA |
347 | return NULL; |
348 | } | |
668f62ec | 349 | if (!object_property_set_bool(OBJECT(dev), "share-rw", share_rw, errp)) { |
395b9539 FZ |
350 | object_unparent(OBJECT(dev)); |
351 | return NULL; | |
352 | } | |
b8efb36b KW |
353 | |
354 | qdev_prop_set_enum(dev, "rerror", rerror); | |
355 | qdev_prop_set_enum(dev, "werror", werror); | |
356 | ||
668f62ec | 357 | if (!qdev_realize_and_unref(dev, &bus->qbus, errp)) { |
02a5c4c9 | 358 | object_unparent(OBJECT(dev)); |
33e66b86 | 359 | return NULL; |
caad4eb3 | 360 | } |
b9eea3e6 | 361 | return SCSI_DEVICE(dev); |
d52affa7 GH |
362 | } |
363 | ||
14545097 | 364 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 365 | { |
42e766a2 | 366 | Location loc; |
d52affa7 | 367 | DriveInfo *dinfo; |
caad4eb3 | 368 | int unit; |
d52affa7 | 369 | |
42e766a2 | 370 | loc_push_none(&loc); |
d3d250bd | 371 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
372 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
373 | if (dinfo == NULL) { | |
374 | continue; | |
375 | } | |
42e766a2 | 376 | qemu_opts_loc_restore(dinfo->opts); |
4be74634 | 377 | scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo), |
b8efb36b KW |
378 | unit, false, -1, false, |
379 | BLOCKDEV_ON_ERROR_AUTO, | |
380 | BLOCKDEV_ON_ERROR_AUTO, | |
381 | NULL, &error_fatal); | |
d52affa7 | 382 | } |
42e766a2 | 383 | loc_pop(&loc); |
d52affa7 | 384 | } |
89b08ae1 | 385 | |
12a08998 PB |
386 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
387 | { | |
388 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
389 | scsi_req_complete(req, CHECK_CONDITION); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static const struct SCSIReqOps reqops_invalid_field = { | |
394 | .size = sizeof(SCSIRequest), | |
395 | .send_command = scsi_invalid_field | |
396 | }; | |
397 | ||
afa46c46 PB |
398 | /* SCSIReqOps implementation for invalid commands. */ |
399 | ||
400 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
401 | { | |
402 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
403 | scsi_req_complete(req, CHECK_CONDITION); | |
404 | return 0; | |
405 | } | |
406 | ||
adcf2754 | 407 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
408 | .size = sizeof(SCSIRequest), |
409 | .send_command = scsi_invalid_command | |
410 | }; | |
411 | ||
6dc06f08 PB |
412 | /* SCSIReqOps implementation for unit attention conditions. */ |
413 | ||
414 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
415 | { | |
0bf8264e | 416 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { |
6dc06f08 PB |
417 | scsi_req_build_sense(req, req->dev->unit_attention); |
418 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
419 | scsi_req_build_sense(req, req->bus->unit_attention); | |
420 | } | |
421 | scsi_req_complete(req, CHECK_CONDITION); | |
422 | return 0; | |
423 | } | |
424 | ||
adcf2754 | 425 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
426 | .size = sizeof(SCSIRequest), |
427 | .send_command = scsi_unit_attention | |
428 | }; | |
429 | ||
fdaef069 PB |
430 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
431 | an invalid LUN. */ | |
432 | ||
433 | typedef struct SCSITargetReq SCSITargetReq; | |
434 | ||
435 | struct SCSITargetReq { | |
436 | SCSIRequest req; | |
437 | int len; | |
84642435 AH |
438 | uint8_t *buf; |
439 | int buf_len; | |
fdaef069 PB |
440 | }; |
441 | ||
442 | static void store_lun(uint8_t *outbuf, int lun) | |
443 | { | |
444 | if (lun < 256) { | |
8cfe8013 ML |
445 | /* Simple logical unit addressing method*/ |
446 | outbuf[0] = 0; | |
fdaef069 | 447 | outbuf[1] = lun; |
8cfe8013 ML |
448 | } else { |
449 | /* Flat space addressing method */ | |
450 | outbuf[0] = 0x40 | (lun >> 8); | |
451 | outbuf[1] = (lun & 255); | |
fdaef069 | 452 | } |
fdaef069 PB |
453 | } |
454 | ||
455 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
456 | { | |
0866aca1 | 457 | BusChild *kid; |
0d3545e7 | 458 | int channel, id; |
8cfe8013 ML |
459 | uint8_t tmp[8] = {0}; |
460 | int len = 0; | |
461 | GByteArray *buf; | |
ba74307c | 462 | |
fdaef069 PB |
463 | if (r->req.cmd.xfer < 16) { |
464 | return false; | |
465 | } | |
466 | if (r->req.cmd.buf[2] > 2) { | |
467 | return false; | |
468 | } | |
8cfe8013 ML |
469 | |
470 | /* reserve space for 63 LUNs*/ | |
471 | buf = g_byte_array_sized_new(512); | |
472 | ||
0d3545e7 | 473 | channel = r->req.dev->channel; |
ba74307c | 474 | id = r->req.dev->id; |
2d24a646 | 475 | |
8cfe8013 ML |
476 | /* add size (will be updated later to correct value */ |
477 | g_byte_array_append(buf, tmp, 8); | |
478 | len += 8; | |
2d24a646 | 479 | |
8cfe8013 ML |
480 | /* add LUN0 */ |
481 | g_byte_array_append(buf, tmp, 8); | |
482 | len += 8; | |
ba74307c | 483 | |
8cfe8013 ML |
484 | WITH_RCU_READ_LOCK_GUARD() { |
485 | QTAILQ_FOREACH_RCU(kid, &r->req.bus->qbus.children, sibling) { | |
486 | DeviceState *qdev = kid->child; | |
487 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
488 | ||
489 | if (dev->channel == channel && dev->id == id && dev->lun != 0) { | |
490 | store_lun(tmp, dev->lun); | |
491 | g_byte_array_append(buf, tmp, 8); | |
492 | len += 8; | |
ba74307c | 493 | } |
ba74307c PB |
494 | } |
495 | } | |
ba74307c | 496 | |
8cfe8013 ML |
497 | r->buf_len = len; |
498 | r->buf = g_byte_array_free(buf, FALSE); | |
499 | r->len = MIN(len, r->req.cmd.xfer & ~7); | |
2d24a646 | 500 | |
8cfe8013 ML |
501 | /* store the LUN list length */ |
502 | stl_be_p(&r->buf[0], len - 8); | |
fdaef069 PB |
503 | return true; |
504 | } | |
505 | ||
506 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
507 | { | |
508 | assert(r->req.dev->lun != r->req.lun); | |
84642435 AH |
509 | |
510 | scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN); | |
511 | ||
fdaef069 PB |
512 | if (r->req.cmd.buf[1] & 0x2) { |
513 | /* Command support data - optional, not implemented */ | |
514 | return false; | |
515 | } | |
516 | ||
517 | if (r->req.cmd.buf[1] & 0x1) { | |
518 | /* Vital product data */ | |
519 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
520 | r->buf[r->len++] = page_code ; /* this page */ |
521 | r->buf[r->len++] = 0x00; | |
522 | ||
523 | switch (page_code) { | |
524 | case 0x00: /* Supported page codes, mandatory */ | |
525 | { | |
526 | int pages; | |
527 | pages = r->len++; | |
528 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
529 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
530 | break; | |
531 | } | |
532 | default: | |
533 | return false; | |
534 | } | |
535 | /* done with EVPD */ | |
84642435 | 536 | assert(r->len < r->buf_len); |
fdaef069 PB |
537 | r->len = MIN(r->req.cmd.xfer, r->len); |
538 | return true; | |
539 | } | |
540 | ||
541 | /* Standard INQUIRY data */ | |
542 | if (r->req.cmd.buf[2] != 0) { | |
543 | return false; | |
544 | } | |
545 | ||
546 | /* PAGE CODE == 0 */ | |
84642435 | 547 | r->len = MIN(r->req.cmd.xfer, SCSI_INQUIRY_LEN); |
fdaef069 PB |
548 | memset(r->buf, 0, r->len); |
549 | if (r->req.lun != 0) { | |
550 | r->buf[0] = TYPE_NO_LUN; | |
551 | } else { | |
552 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
553 | r->buf[2] = 5; /* Version */ | |
554 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
555 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 556 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
557 | memcpy(&r->buf[8], "QEMU ", 8); |
558 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
35c2c8dc | 559 | pstrcpy((char *) &r->buf[32], 4, qemu_hw_version()); |
fdaef069 PB |
560 | } |
561 | return true; | |
562 | } | |
563 | ||
6959e508 JL |
564 | static size_t scsi_sense_len(SCSIRequest *req) |
565 | { | |
566 | if (req->dev->type == TYPE_SCANNER) | |
567 | return SCSI_SENSE_LEN_SCANNER; | |
568 | else | |
569 | return SCSI_SENSE_LEN; | |
570 | } | |
571 | ||
fdaef069 PB |
572 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) |
573 | { | |
574 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
b07fbce6 | 575 | int fixed_sense = (req->cmd.buf[1] & 1) == 0; |
fdaef069 | 576 | |
b07fbce6 HR |
577 | if (req->lun != 0 && |
578 | buf[0] != INQUIRY && buf[0] != REQUEST_SENSE) { | |
ded6ddc5 HR |
579 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); |
580 | scsi_req_complete(req, CHECK_CONDITION); | |
581 | return 0; | |
582 | } | |
fdaef069 PB |
583 | switch (buf[0]) { |
584 | case REPORT_LUNS: | |
585 | if (!scsi_target_emulate_report_luns(r)) { | |
586 | goto illegal_request; | |
587 | } | |
588 | break; | |
589 | case INQUIRY: | |
590 | if (!scsi_target_emulate_inquiry(r)) { | |
591 | goto illegal_request; | |
592 | } | |
593 | break; | |
739df215 | 594 | case REQUEST_SENSE: |
6959e508 | 595 | scsi_target_alloc_buf(&r->req, scsi_sense_len(req)); |
b07fbce6 HR |
596 | if (req->lun != 0) { |
597 | const struct SCSISense sense = SENSE_CODE(LUN_NOT_SUPPORTED); | |
598 | ||
f68d98b2 PB |
599 | r->len = scsi_build_sense_buf(r->buf, req->cmd.xfer, |
600 | sense, fixed_sense); | |
b07fbce6 HR |
601 | } else { |
602 | r->len = scsi_device_get_sense(r->req.dev, r->buf, | |
603 | MIN(req->cmd.xfer, r->buf_len), | |
604 | fixed_sense); | |
605 | } | |
3653d8c4 | 606 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 607 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
608 | r->req.dev->sense_len = 0; |
609 | r->req.dev->sense_is_ua = false; | |
610 | } | |
739df215 | 611 | break; |
1cb27d92 PB |
612 | case TEST_UNIT_READY: |
613 | break; | |
fdaef069 | 614 | default: |
ded6ddc5 | 615 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); |
fdaef069 PB |
616 | scsi_req_complete(req, CHECK_CONDITION); |
617 | return 0; | |
618 | illegal_request: | |
619 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
620 | scsi_req_complete(req, CHECK_CONDITION); | |
621 | return 0; | |
622 | } | |
623 | ||
624 | if (!r->len) { | |
625 | scsi_req_complete(req, GOOD); | |
626 | } | |
627 | return r->len; | |
628 | } | |
629 | ||
630 | static void scsi_target_read_data(SCSIRequest *req) | |
631 | { | |
632 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
633 | uint32_t n; | |
634 | ||
635 | n = r->len; | |
636 | if (n > 0) { | |
637 | r->len = 0; | |
638 | scsi_req_data(&r->req, n); | |
639 | } else { | |
640 | scsi_req_complete(&r->req, GOOD); | |
641 | } | |
642 | } | |
643 | ||
644 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
645 | { | |
646 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
647 | ||
648 | return r->buf; | |
649 | } | |
650 | ||
84642435 AH |
651 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len) |
652 | { | |
653 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
654 | ||
655 | r->buf = g_malloc(len); | |
656 | r->buf_len = len; | |
657 | ||
658 | return r->buf; | |
659 | } | |
660 | ||
661 | static void scsi_target_free_buf(SCSIRequest *req) | |
662 | { | |
663 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
664 | ||
665 | g_free(r->buf); | |
666 | } | |
667 | ||
adcf2754 | 668 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
669 | .size = sizeof(SCSITargetReq), |
670 | .send_command = scsi_target_send_command, | |
671 | .read_data = scsi_target_read_data, | |
672 | .get_buf = scsi_target_get_buf, | |
84642435 | 673 | .free_req = scsi_target_free_buf, |
fdaef069 PB |
674 | }; |
675 | ||
676 | ||
adcf2754 PB |
677 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
678 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
679 | { |
680 | SCSIRequest *req; | |
cac3c384 PB |
681 | SCSIBus *bus = scsi_bus_from_device(d); |
682 | BusState *qbus = BUS(bus); | |
61e68b3f FZ |
683 | const int memset_off = offsetof(SCSIRequest, sense) |
684 | + sizeof(req->sense); | |
89b08ae1 | 685 | |
633dccb4 | 686 | req = g_malloc(reqops->size); |
61e68b3f | 687 | memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off); |
5c6c0e51 | 688 | req->refcount = 1; |
cac3c384 | 689 | req->bus = bus; |
89b08ae1 GH |
690 | req->dev = d; |
691 | req->tag = tag; | |
692 | req->lun = lun; | |
c5bf71a9 | 693 | req->hba_private = hba_private; |
ed3a34a3 | 694 | req->status = -1; |
f3126d65 | 695 | req->host_status = -1; |
8dbd4574 | 696 | req->ops = reqops; |
cac3c384 PB |
697 | object_ref(OBJECT(d)); |
698 | object_ref(OBJECT(qbus->parent)); | |
8e0a9320 | 699 | notifier_list_init(&req->cancel_notifiers); |
5138efec | 700 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
701 | return req; |
702 | } | |
703 | ||
c5bf71a9 | 704 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 705 | uint8_t *buf, void *hba_private) |
43a2b339 | 706 | { |
6dc06f08 | 707 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
769998a1 | 708 | const SCSIReqOps *ops; |
ff34c32c | 709 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d); |
c39ce112 | 710 | SCSIRequest *req; |
769998a1 PB |
711 | SCSICommand cmd = { .len = 0 }; |
712 | int ret; | |
713 | ||
714 | if ((d->unit_attention.key == UNIT_ATTENTION || | |
715 | bus->unit_attention.key == UNIT_ATTENTION) && | |
716 | (buf[0] != INQUIRY && | |
717 | buf[0] != REPORT_LUNS && | |
718 | buf[0] != GET_CONFIGURATION && | |
719 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
720 | ||
721 | /* | |
722 | * If we already have a pending unit attention condition, | |
723 | * report this one before triggering another one. | |
724 | */ | |
725 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
726 | ops = &reqops_unit_attention; | |
727 | } else if (lun != d->lun || | |
728 | buf[0] == REPORT_LUNS || | |
729 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
730 | ops = &reqops_target_command; | |
731 | } else { | |
732 | ops = NULL; | |
733 | } | |
afa46c46 | 734 | |
ff34c32c PB |
735 | if (ops != NULL || !sc->parse_cdb) { |
736 | ret = scsi_req_parse_cdb(d, &cmd, buf); | |
737 | } else { | |
738 | ret = sc->parse_cdb(d, &cmd, buf, hba_private); | |
739 | } | |
740 | ||
769998a1 | 741 | if (ret != 0) { |
afa46c46 PB |
742 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); |
743 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
744 | } else { | |
769998a1 | 745 | assert(cmd.len != 0); |
afa46c46 PB |
746 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], |
747 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 748 | if (cmd.lba != -1) { |
afa46c46 PB |
749 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
750 | cmd.lba); | |
751 | } | |
fdaef069 | 752 | |
12a08998 PB |
753 | if (cmd.xfer > INT32_MAX) { |
754 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
769998a1 PB |
755 | } else if (ops) { |
756 | req = scsi_req_alloc(ops, d, tag, lun, hba_private); | |
fdaef069 | 757 | } else { |
b9eea3e6 | 758 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 759 | } |
afa46c46 PB |
760 | } |
761 | ||
762 | req->cmd = cmd; | |
01e95455 PB |
763 | req->resid = req->cmd.xfer; |
764 | ||
98254542 PB |
765 | switch (buf[0]) { |
766 | case INQUIRY: | |
767 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
768 | break; | |
769 | case TEST_UNIT_READY: | |
770 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
771 | break; | |
772 | case REPORT_LUNS: | |
773 | trace_scsi_report_luns(d->id, lun, tag); | |
774 | break; | |
775 | case REQUEST_SENSE: | |
776 | trace_scsi_request_sense(d->id, lun, tag); | |
777 | break; | |
778 | default: | |
779 | break; | |
780 | } | |
781 | ||
c39ce112 | 782 | return req; |
43a2b339 PB |
783 | } |
784 | ||
0c34459b PB |
785 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
786 | { | |
12010e7b | 787 | return req->ops->get_buf(req); |
0c34459b PB |
788 | } |
789 | ||
6dc06f08 PB |
790 | static void scsi_clear_unit_attention(SCSIRequest *req) |
791 | { | |
792 | SCSISense *ua; | |
793 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
794 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
795 | return; | |
796 | } | |
797 | ||
798 | /* | |
799 | * If an INQUIRY command enters the enabled command state, | |
800 | * the device server shall [not] clear any unit attention condition; | |
801 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
802 | */ | |
803 | if (req->cmd.buf[0] == INQUIRY || | |
804 | req->cmd.buf[0] == GET_CONFIGURATION || | |
805 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
806 | return; | |
807 | } | |
808 | ||
809 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
810 | ua = &req->dev->unit_attention; | |
811 | } else { | |
812 | ua = &req->bus->unit_attention; | |
813 | } | |
814 | ||
815 | /* | |
816 | * If a REPORT LUNS command enters the enabled command state, [...] | |
817 | * the device server shall clear any pending unit attention condition | |
818 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
819 | */ | |
820 | if (req->cmd.buf[0] == REPORT_LUNS && | |
821 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
822 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
823 | return; | |
824 | } | |
825 | ||
826 | *ua = SENSE_CODE(NO_SENSE); | |
827 | } | |
828 | ||
74382217 HR |
829 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
830 | { | |
6dc06f08 PB |
831 | int ret; |
832 | ||
b45ef674 PB |
833 | assert(len >= 14); |
834 | if (!req->sense_len) { | |
74382217 HR |
835 | return 0; |
836 | } | |
6dc06f08 | 837 | |
37b6045c | 838 | ret = scsi_convert_sense(req->sense, req->sense_len, buf, len, true); |
6dc06f08 PB |
839 | |
840 | /* | |
841 | * FIXME: clearing unit attention conditions upon autosense should be done | |
842 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
843 | * (SAM-5, 5.14). | |
844 | * | |
845 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
846 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 847 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 848 | */ |
3653d8c4 | 849 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 850 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
851 | req->dev->sense_len = 0; |
852 | req->dev->sense_is_ua = false; | |
853 | } | |
6dc06f08 | 854 | return ret; |
b45ef674 PB |
855 | } |
856 | ||
857 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
858 | { | |
37b6045c | 859 | return scsi_convert_sense(dev->sense, dev->sense_len, buf, len, fixed); |
b45ef674 PB |
860 | } |
861 | ||
862 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
863 | { | |
864 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
865 | sense.key, sense.asc, sense.ascq); | |
a3760467 | 866 | req->sense_len = scsi_build_sense(req->sense, sense); |
74382217 HR |
867 | } |
868 | ||
63f740dd | 869 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 870 | { |
5c6c0e51 HR |
871 | assert(!req->enqueued); |
872 | scsi_req_ref(req); | |
3d5aba97 PB |
873 | if (req->bus->info->get_sg_list) { |
874 | req->sg = req->bus->info->get_sg_list(req); | |
875 | } else { | |
876 | req->sg = NULL; | |
877 | } | |
5c6c0e51 HR |
878 | req->enqueued = true; |
879 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 880 | } |
fc4f0754 | 881 | |
63f740dd PB |
882 | int32_t scsi_req_enqueue(SCSIRequest *req) |
883 | { | |
884 | int32_t rc; | |
885 | ||
886 | assert(!req->retry); | |
887 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 888 | scsi_req_ref(req); |
c39ce112 | 889 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
890 | scsi_req_unref(req); |
891 | return rc; | |
89b08ae1 GH |
892 | } |
893 | ||
a1f0cce2 | 894 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 895 | { |
5138efec | 896 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 897 | req->retry = false; |
e8637c90 JK |
898 | if (req->enqueued) { |
899 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
900 | req->enqueued = false; | |
ad2d30f7 | 901 | scsi_req_unref(req); |
e8637c90 JK |
902 | } |
903 | } | |
904 | ||
06b86357 PB |
905 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
906 | { | |
907 | /* MMC-6, paragraph 6.7. */ | |
908 | switch (type) { | |
909 | case 0: | |
910 | if ((data_type & 3) == 0) { | |
911 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
912 | return 16 * num_desc + 8; | |
913 | } else { | |
914 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
915 | return 6 * num_desc + 8; | |
916 | } | |
917 | case 1: | |
918 | case 4: | |
919 | case 5: | |
920 | return 8 * num_desc + 8; | |
921 | case 2: | |
922 | return 2048 * num_desc + 8; | |
923 | case 3: | |
924 | return 16 * num_desc + 8; | |
925 | default: | |
926 | return 8; | |
927 | } | |
928 | } | |
929 | ||
e4b65262 CM |
930 | static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf) |
931 | { | |
932 | int byte_block = (buf[2] >> 2) & 0x1; | |
933 | int type = (buf[2] >> 4) & 0x1; | |
934 | int xfer_unit; | |
935 | ||
936 | if (byte_block) { | |
937 | if (type) { | |
938 | xfer_unit = dev->blocksize; | |
939 | } else { | |
940 | xfer_unit = 512; | |
941 | } | |
942 | } else { | |
943 | xfer_unit = 1; | |
944 | } | |
945 | ||
946 | return xfer_unit; | |
947 | } | |
948 | ||
1894df02 | 949 | static int ata_passthrough_12_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
950 | { |
951 | int length = buf[2] & 0x3; | |
952 | int xfer; | |
953 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
954 | ||
955 | switch (length) { | |
956 | case 0: | |
957 | case 3: /* USB-specific. */ | |
d83c951c | 958 | default: |
e4b65262 CM |
959 | xfer = 0; |
960 | break; | |
961 | case 1: | |
962 | xfer = buf[3]; | |
963 | break; | |
964 | case 2: | |
965 | xfer = buf[4]; | |
966 | break; | |
967 | } | |
968 | ||
969 | return xfer * unit; | |
970 | } | |
971 | ||
1894df02 | 972 | static int ata_passthrough_16_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
973 | { |
974 | int extend = buf[1] & 0x1; | |
975 | int length = buf[2] & 0x3; | |
976 | int xfer; | |
977 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
978 | ||
979 | switch (length) { | |
980 | case 0: | |
981 | case 3: /* USB-specific. */ | |
d83c951c | 982 | default: |
e4b65262 CM |
983 | xfer = 0; |
984 | break; | |
985 | case 1: | |
986 | xfer = buf[4]; | |
987 | xfer |= (extend ? buf[3] << 8 : 0); | |
988 | break; | |
989 | case 2: | |
990 | xfer = buf[6]; | |
991 | xfer |= (extend ? buf[5] << 8 : 0); | |
992 | break; | |
993 | } | |
994 | ||
995 | return xfer * unit; | |
996 | } | |
997 | ||
1894df02 | 998 | static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
bb729f75 | 999 | { |
1894df02 | 1000 | cmd->xfer = scsi_cdb_xfer(buf); |
2599aece | 1001 | switch (buf[0]) { |
2ec749cb | 1002 | case TEST_UNIT_READY: |
5e30a07d | 1003 | case REWIND: |
2ec749cb | 1004 | case START_STOP: |
00a01ad4 | 1005 | case SET_CAPACITY: |
2ec749cb | 1006 | case WRITE_FILEMARKS: |
06b86357 | 1007 | case WRITE_FILEMARKS_16: |
2ec749cb | 1008 | case SPACE: |
a5e3d9ef BK |
1009 | case RESERVE: |
1010 | case RELEASE: | |
2ec749cb GH |
1011 | case ERASE: |
1012 | case ALLOW_MEDIUM_REMOVAL: | |
2ec749cb GH |
1013 | case SEEK_10: |
1014 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
1015 | case SYNCHRONIZE_CACHE_16: |
1016 | case LOCATE_16: | |
2ec749cb | 1017 | case LOCK_UNLOCK_CACHE: |
2ec749cb GH |
1018 | case SET_CD_SPEED: |
1019 | case SET_LIMITS: | |
5e30a07d | 1020 | case WRITE_LONG_10: |
2ec749cb | 1021 | case UPDATE_BLOCK: |
06b86357 PB |
1022 | case RESERVE_TRACK: |
1023 | case SET_READ_AHEAD: | |
1024 | case PRE_FETCH: | |
1025 | case PRE_FETCH_16: | |
1026 | case ALLOW_OVERWRITE: | |
2599aece | 1027 | cmd->xfer = 0; |
2ec749cb | 1028 | break; |
d12ad44c PB |
1029 | case VERIFY_10: |
1030 | case VERIFY_12: | |
1031 | case VERIFY_16: | |
1032 | if ((buf[1] & 2) == 0) { | |
1033 | cmd->xfer = 0; | |
7ef8cf9a | 1034 | } else if ((buf[1] & 4) != 0) { |
d12ad44c PB |
1035 | cmd->xfer = 1; |
1036 | } | |
1037 | cmd->xfer *= dev->blocksize; | |
1038 | break; | |
2ec749cb GH |
1039 | case MODE_SENSE: |
1040 | break; | |
5e30a07d | 1041 | case WRITE_SAME_10: |
a5ee9085 | 1042 | case WRITE_SAME_16: |
4397a018 | 1043 | cmd->xfer = buf[1] & 1 ? 0 : dev->blocksize; |
2ec749cb | 1044 | break; |
5e30a07d | 1045 | case READ_CAPACITY_10: |
2599aece | 1046 | cmd->xfer = 8; |
2ec749cb GH |
1047 | break; |
1048 | case READ_BLOCK_LIMITS: | |
2599aece | 1049 | cmd->xfer = 6; |
2ec749cb | 1050 | break; |
2ec749cb | 1051 | case SEND_VOLUME_TAG: |
06b86357 PB |
1052 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
1053 | if (dev->type == TYPE_ROM) { | |
1054 | cmd->xfer = buf[10] | (buf[9] << 8); | |
1055 | } else { | |
1056 | cmd->xfer = buf[9] | (buf[8] << 8); | |
1057 | } | |
2ec749cb | 1058 | break; |
f62d0594 PB |
1059 | case WRITE_6: |
1060 | /* length 0 means 256 blocks */ | |
1061 | if (cmd->xfer == 0) { | |
1062 | cmd->xfer = 256; | |
1063 | } | |
c4ce4c4b | 1064 | /* fall through */ |
2ec749cb | 1065 | case WRITE_10: |
5e30a07d | 1066 | case WRITE_VERIFY_10: |
2ec749cb GH |
1067 | case WRITE_12: |
1068 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1069 | case WRITE_16: |
1070 | case WRITE_VERIFY_16: | |
2599aece | 1071 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1072 | break; |
2ec749cb GH |
1073 | case READ_6: |
1074 | case READ_REVERSE: | |
f62d0594 PB |
1075 | /* length 0 means 256 blocks */ |
1076 | if (cmd->xfer == 0) { | |
1077 | cmd->xfer = 256; | |
1078 | } | |
c4ce4c4b | 1079 | /* fall through */ |
f62d0594 | 1080 | case READ_10: |
2ec749cb | 1081 | case READ_12: |
bd536cf3 | 1082 | case READ_16: |
2599aece | 1083 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1084 | break; |
06b86357 PB |
1085 | case FORMAT_UNIT: |
1086 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
1087 | * for block devices are restricted to the header right now. */ | |
1088 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
1089 | cmd->xfer = 12; | |
1090 | } else { | |
1091 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
1092 | } | |
1093 | break; | |
2ec749cb | 1094 | case INQUIRY: |
06b86357 PB |
1095 | case RECEIVE_DIAGNOSTIC: |
1096 | case SEND_DIAGNOSTIC: | |
2599aece | 1097 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 1098 | break; |
06b86357 PB |
1099 | case READ_CD: |
1100 | case READ_BUFFER: | |
1101 | case WRITE_BUFFER: | |
1102 | case SEND_CUE_SHEET: | |
1103 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1104 | break; | |
1105 | case PERSISTENT_RESERVE_OUT: | |
1106 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
1107 | break; | |
1108 | case ERASE_12: | |
1109 | if (dev->type == TYPE_ROM) { | |
1110 | /* MMC command GET PERFORMANCE. */ | |
1111 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
1112 | buf[10], buf[1] & 0x1f); | |
1113 | } | |
1114 | break; | |
1115 | case MECHANISM_STATUS: | |
1116 | case READ_DVD_STRUCTURE: | |
1117 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
1118 | case MAINTENANCE_OUT: |
1119 | case MAINTENANCE_IN: | |
2599aece | 1120 | if (dev->type == TYPE_ROM) { |
c7126d5b | 1121 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 1122 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
1123 | } |
1124 | break; | |
e4b65262 CM |
1125 | case ATA_PASSTHROUGH_12: |
1126 | if (dev->type == TYPE_ROM) { | |
1127 | /* BLANK command of MMC */ | |
1128 | cmd->xfer = 0; | |
1129 | } else { | |
1894df02 | 1130 | cmd->xfer = ata_passthrough_12_xfer(dev, buf); |
e4b65262 CM |
1131 | } |
1132 | break; | |
1133 | case ATA_PASSTHROUGH_16: | |
1894df02 | 1134 | cmd->xfer = ata_passthrough_16_xfer(dev, buf); |
e4b65262 | 1135 | break; |
2ec749cb GH |
1136 | } |
1137 | return 0; | |
1138 | } | |
1139 | ||
1894df02 | 1140 | static int scsi_req_stream_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 1141 | { |
2599aece | 1142 | switch (buf[0]) { |
2ec749cb | 1143 | /* stream commands */ |
06b86357 PB |
1144 | case ERASE_12: |
1145 | case ERASE_16: | |
1146 | cmd->xfer = 0; | |
1147 | break; | |
2ec749cb GH |
1148 | case READ_6: |
1149 | case READ_REVERSE: | |
1150 | case RECOVER_BUFFERED_DATA: | |
1151 | case WRITE_6: | |
2599aece PB |
1152 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); |
1153 | if (buf[1] & 0x01) { /* fixed */ | |
1154 | cmd->xfer *= dev->blocksize; | |
1155 | } | |
2ec749cb | 1156 | break; |
065c2599 PB |
1157 | case READ_16: |
1158 | case READ_REVERSE_16: | |
1159 | case VERIFY_16: | |
1160 | case WRITE_16: | |
065c2599 PB |
1161 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); |
1162 | if (buf[1] & 0x01) { /* fixed */ | |
1163 | cmd->xfer *= dev->blocksize; | |
1164 | } | |
1165 | break; | |
2ec749cb | 1166 | case REWIND: |
15e58a21 | 1167 | case LOAD_UNLOAD: |
2599aece | 1168 | cmd->xfer = 0; |
2ec749cb | 1169 | break; |
06b86357 PB |
1170 | case SPACE_16: |
1171 | cmd->xfer = buf[13] | (buf[12] << 8); | |
1172 | break; | |
1173 | case READ_POSITION: | |
9ce1bb2d CH |
1174 | switch (buf[1] & 0x1f) /* operation code */ { |
1175 | case SHORT_FORM_BLOCK_ID: | |
1176 | case SHORT_FORM_VENDOR_SPECIFIC: | |
1177 | cmd->xfer = 20; | |
1178 | break; | |
1179 | case LONG_FORM: | |
1180 | cmd->xfer = 32; | |
1181 | break; | |
1182 | case EXTENDED_FORM: | |
1183 | cmd->xfer = buf[8] | (buf[7] << 8); | |
1184 | break; | |
1185 | default: | |
1186 | return -1; | |
1187 | } | |
1188 | ||
06b86357 PB |
1189 | break; |
1190 | case FORMAT_UNIT: | |
1191 | cmd->xfer = buf[4] | (buf[3] << 8); | |
1192 | break; | |
2ec749cb GH |
1193 | /* generic commands */ |
1194 | default: | |
1894df02 | 1195 | return scsi_req_xfer(cmd, dev, buf); |
2ec749cb GH |
1196 | } |
1197 | return 0; | |
1198 | } | |
1199 | ||
1894df02 | 1200 | static int scsi_req_medium_changer_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
40723a99 CH |
1201 | { |
1202 | switch (buf[0]) { | |
1203 | /* medium changer commands */ | |
1204 | case EXCHANGE_MEDIUM: | |
1205 | case INITIALIZE_ELEMENT_STATUS: | |
1206 | case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: | |
1207 | case MOVE_MEDIUM: | |
1208 | case POSITION_TO_ELEMENT: | |
1209 | cmd->xfer = 0; | |
1210 | break; | |
1211 | case READ_ELEMENT_STATUS: | |
1212 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); | |
1213 | break; | |
1214 | ||
1215 | /* generic commands */ | |
1216 | default: | |
1894df02 | 1217 | return scsi_req_xfer(cmd, dev, buf); |
40723a99 CH |
1218 | } |
1219 | return 0; | |
1220 | } | |
1221 | ||
297b044a JL |
1222 | static int scsi_req_scanner_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
1223 | { | |
1224 | switch (buf[0]) { | |
1225 | /* Scanner commands */ | |
1226 | case OBJECT_POSITION: | |
1227 | cmd->xfer = 0; | |
1228 | break; | |
1229 | case SCAN: | |
1230 | cmd->xfer = buf[4]; | |
1231 | break; | |
1232 | case READ_10: | |
1233 | case SEND: | |
1234 | case GET_WINDOW: | |
1235 | case SET_WINDOW: | |
1236 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1237 | break; | |
1238 | default: | |
1239 | /* GET_DATA_BUFFER_STATUS xfer handled by scsi_req_xfer */ | |
1240 | return scsi_req_xfer(cmd, dev, buf); | |
1241 | } | |
1242 | ||
1243 | return 0; | |
1244 | } | |
40723a99 | 1245 | |
2599aece | 1246 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 1247 | { |
a5ee9085 PB |
1248 | if (!cmd->xfer) { |
1249 | cmd->mode = SCSI_XFER_NONE; | |
1250 | return; | |
1251 | } | |
2599aece | 1252 | switch (cmd->buf[0]) { |
97a06435 GH |
1253 | case WRITE_6: |
1254 | case WRITE_10: | |
5e30a07d | 1255 | case WRITE_VERIFY_10: |
97a06435 GH |
1256 | case WRITE_12: |
1257 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1258 | case WRITE_16: |
1259 | case WRITE_VERIFY_16: | |
d12ad44c PB |
1260 | case VERIFY_10: |
1261 | case VERIFY_12: | |
1262 | case VERIFY_16: | |
97a06435 GH |
1263 | case COPY: |
1264 | case COPY_VERIFY: | |
1265 | case COMPARE: | |
1266 | case CHANGE_DEFINITION: | |
1267 | case LOG_SELECT: | |
1268 | case MODE_SELECT: | |
1269 | case MODE_SELECT_10: | |
1270 | case SEND_DIAGNOSTIC: | |
1271 | case WRITE_BUFFER: | |
1272 | case FORMAT_UNIT: | |
1273 | case REASSIGN_BLOCKS: | |
97a06435 GH |
1274 | case SEARCH_EQUAL: |
1275 | case SEARCH_HIGH: | |
1276 | case SEARCH_LOW: | |
1277 | case UPDATE_BLOCK: | |
5e30a07d HR |
1278 | case WRITE_LONG_10: |
1279 | case WRITE_SAME_10: | |
a5ee9085 | 1280 | case WRITE_SAME_16: |
381b634c | 1281 | case UNMAP: |
97a06435 GH |
1282 | case SEARCH_HIGH_12: |
1283 | case SEARCH_EQUAL_12: | |
1284 | case SEARCH_LOW_12: | |
97a06435 GH |
1285 | case MEDIUM_SCAN: |
1286 | case SEND_VOLUME_TAG: | |
06b86357 PB |
1287 | case SEND_CUE_SHEET: |
1288 | case SEND_DVD_STRUCTURE: | |
01bedeba | 1289 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 1290 | case MAINTENANCE_OUT: |
297b044a JL |
1291 | case SET_WINDOW: |
1292 | case SCAN: | |
1293 | /* SCAN conflicts with START_STOP. START_STOP has cmd->xfer set to 0 for | |
1294 | * non-scanner devices, so we only get here for SCAN and not for START_STOP. | |
1295 | */ | |
2599aece | 1296 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 | 1297 | break; |
e4b65262 CM |
1298 | case ATA_PASSTHROUGH_12: |
1299 | case ATA_PASSTHROUGH_16: | |
1300 | /* T_DIR */ | |
1301 | cmd->mode = (cmd->buf[2] & 0x8) ? | |
1302 | SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV; | |
1303 | break; | |
97a06435 | 1304 | default: |
a5ee9085 | 1305 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
1306 | break; |
1307 | } | |
1308 | } | |
1309 | ||
1894df02 HR |
1310 | int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf) |
1311 | { | |
1312 | int rc; | |
c170aad8 | 1313 | int len; |
1894df02 HR |
1314 | |
1315 | cmd->lba = -1; | |
c170aad8 PB |
1316 | len = scsi_cdb_length(buf); |
1317 | if (len < 0) { | |
1318 | return -1; | |
1319 | } | |
28b70c9d | 1320 | |
c170aad8 | 1321 | cmd->len = len; |
40723a99 CH |
1322 | switch (dev->type) { |
1323 | case TYPE_TAPE: | |
1894df02 | 1324 | rc = scsi_req_stream_xfer(cmd, dev, buf); |
40723a99 CH |
1325 | break; |
1326 | case TYPE_MEDIUM_CHANGER: | |
1894df02 | 1327 | rc = scsi_req_medium_changer_xfer(cmd, dev, buf); |
40723a99 | 1328 | break; |
297b044a JL |
1329 | case TYPE_SCANNER: |
1330 | rc = scsi_req_scanner_length(cmd, dev, buf); | |
1331 | break; | |
40723a99 | 1332 | default: |
1894df02 | 1333 | rc = scsi_req_xfer(cmd, dev, buf); |
40723a99 | 1334 | break; |
2ec749cb | 1335 | } |
40723a99 | 1336 | |
2ec749cb GH |
1337 | if (rc != 0) |
1338 | return rc; | |
1339 | ||
afa46c46 PB |
1340 | memcpy(cmd->buf, buf, cmd->len); |
1341 | scsi_cmd_xfer_mode(cmd); | |
1342 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1343 | return 0; |
1344 | } | |
ed3a34a3 | 1345 | |
53200fad PB |
1346 | void scsi_device_report_change(SCSIDevice *dev, SCSISense sense) |
1347 | { | |
1348 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1349 | ||
1350 | scsi_device_set_ua(dev, sense); | |
1351 | if (bus->info->change) { | |
1352 | bus->info->change(bus, dev, sense); | |
1353 | } | |
1354 | } | |
1355 | ||
ad2d30f7 PB |
1356 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1357 | { | |
8e86b93c | 1358 | assert(req->refcount > 0); |
ad2d30f7 PB |
1359 | req->refcount++; |
1360 | return req; | |
1361 | } | |
1362 | ||
1363 | void scsi_req_unref(SCSIRequest *req) | |
1364 | { | |
68bd348a | 1365 | assert(req->refcount > 0); |
ad2d30f7 | 1366 | if (--req->refcount == 0) { |
cac3c384 PB |
1367 | BusState *qbus = req->dev->qdev.parent_bus; |
1368 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus); | |
1369 | ||
8e86b93c PB |
1370 | if (bus->info->free_request && req->hba_private) { |
1371 | bus->info->free_request(bus, req->hba_private); | |
1372 | } | |
12010e7b PB |
1373 | if (req->ops->free_req) { |
1374 | req->ops->free_req(req); | |
ad2d30f7 | 1375 | } |
cac3c384 PB |
1376 | object_unref(OBJECT(req->dev)); |
1377 | object_unref(OBJECT(qbus->parent)); | |
633dccb4 | 1378 | g_free(req); |
ad2d30f7 PB |
1379 | } |
1380 | } | |
1381 | ||
ad3376cc PB |
1382 | /* Tell the device that we finished processing this chunk of I/O. It |
1383 | will start the next chunk or complete the command. */ | |
1384 | void scsi_req_continue(SCSIRequest *req) | |
1385 | { | |
6f6710aa PB |
1386 | if (req->io_canceled) { |
1387 | trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); | |
1388 | return; | |
1389 | } | |
ad3376cc PB |
1390 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
1391 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1392 | req->ops->write_data(req); |
ad3376cc | 1393 | } else { |
12010e7b | 1394 | req->ops->read_data(req); |
ad3376cc PB |
1395 | } |
1396 | } | |
1397 | ||
ab9adc88 PB |
1398 | /* Called by the devices when data is ready for the HBA. The HBA should |
1399 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1400 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1401 | void scsi_req_data(SCSIRequest *req, int len) |
1402 | { | |
3d5aba97 | 1403 | uint8_t *buf; |
e88c591d PB |
1404 | if (req->io_canceled) { |
1405 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1406 | return; |
e88c591d | 1407 | } |
01e95455 PB |
1408 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1409 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1410 | if (!req->sg) { |
1411 | req->resid -= len; | |
1412 | req->bus->info->transfer_data(req, len); | |
1413 | return; | |
1414 | } | |
1415 | ||
1416 | /* If the device calls scsi_req_data and the HBA specified a | |
1417 | * scatter/gather list, the transfer has to happen in a single | |
1418 | * step. */ | |
1419 | assert(!req->dma_started); | |
1420 | req->dma_started = true; | |
1421 | ||
1422 | buf = scsi_req_get_buf(req); | |
1423 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1424 | req->resid = dma_buf_read(buf, len, req->sg); | |
1425 | } else { | |
1426 | req->resid = dma_buf_write(buf, len, req->sg); | |
1427 | } | |
1428 | scsi_req_continue(req); | |
ab9adc88 PB |
1429 | } |
1430 | ||
ec766865 GH |
1431 | void scsi_req_print(SCSIRequest *req) |
1432 | { | |
1433 | FILE *fp = stderr; | |
1434 | int i; | |
1435 | ||
1436 | fprintf(fp, "[%s id=%d] %s", | |
1437 | req->dev->qdev.parent_bus->name, | |
1438 | req->dev->id, | |
1439 | scsi_command_name(req->cmd.buf[0])); | |
1440 | for (i = 1; i < req->cmd.len; i++) { | |
1441 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1442 | } | |
1443 | switch (req->cmd.mode) { | |
1444 | case SCSI_XFER_NONE: | |
1445 | fprintf(fp, " - none\n"); | |
1446 | break; | |
1447 | case SCSI_XFER_FROM_DEV: | |
1448 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1449 | break; | |
1450 | case SCSI_XFER_TO_DEV: | |
1451 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1452 | break; | |
1453 | default: | |
1454 | fprintf(fp, " - Oops\n"); | |
1455 | break; | |
1456 | } | |
1457 | } | |
1458 | ||
f3126d65 HR |
1459 | void scsi_req_complete_failed(SCSIRequest *req, int host_status) |
1460 | { | |
1461 | SCSISense sense; | |
1462 | int status; | |
1463 | ||
1464 | assert(req->status == -1 && req->host_status == -1); | |
1465 | assert(req->ops != &reqops_unit_attention); | |
1466 | ||
1467 | if (!req->bus->info->fail) { | |
1468 | status = scsi_sense_from_host_status(req->host_status, &sense); | |
1469 | if (status == CHECK_CONDITION) { | |
1470 | scsi_req_build_sense(req, sense); | |
1471 | } | |
1472 | scsi_req_complete(req, status); | |
1473 | return; | |
1474 | } | |
1475 | ||
1476 | req->host_status = host_status; | |
1477 | scsi_req_ref(req); | |
1478 | scsi_req_dequeue(req); | |
1479 | req->bus->info->fail(req); | |
1480 | ||
1481 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1482 | notifier_list_notify(&req->cancel_notifiers, req); | |
1483 | scsi_req_unref(req); | |
1484 | } | |
1485 | ||
682a9b21 | 1486 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1487 | { |
f3126d65 | 1488 | assert(req->status == -1 && req->host_status == -1); |
682a9b21 | 1489 | req->status = status; |
f3126d65 | 1490 | req->host_status = SCSI_HOST_OK; |
b45ef674 | 1491 | |
335f560f | 1492 | assert(req->sense_len <= sizeof(req->sense)); |
b45ef674 PB |
1493 | if (status == GOOD) { |
1494 | req->sense_len = 0; | |
1495 | } | |
1496 | ||
1497 | if (req->sense_len) { | |
1498 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1499 | req->dev->sense_len = req->sense_len; |
1500 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1501 | } else { | |
1502 | req->dev->sense_len = 0; | |
1503 | req->dev->sense_is_ua = false; | |
b45ef674 | 1504 | } |
b45ef674 | 1505 | |
6dc06f08 PB |
1506 | /* |
1507 | * Unit attention state is now stored in the device's sense buffer | |
1508 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1509 | * flags. | |
1510 | */ | |
1511 | scsi_clear_unit_attention(req); | |
1512 | ||
ad2d30f7 | 1513 | scsi_req_ref(req); |
e8637c90 | 1514 | scsi_req_dequeue(req); |
17ea26c2 | 1515 | req->bus->info->complete(req, req->resid); |
8e0a9320 FZ |
1516 | |
1517 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1518 | notifier_list_notify(&req->cancel_notifiers, req); | |
ad2d30f7 | 1519 | scsi_req_unref(req); |
ed3a34a3 | 1520 | } |
db07c0f8 | 1521 | |
d5776465 FZ |
1522 | /* Called by the devices when the request is canceled. */ |
1523 | void scsi_req_cancel_complete(SCSIRequest *req) | |
1524 | { | |
1525 | assert(req->io_canceled); | |
1526 | if (req->bus->info->cancel) { | |
1527 | req->bus->info->cancel(req); | |
1528 | } | |
8e0a9320 | 1529 | notifier_list_notify(&req->cancel_notifiers, req); |
d5776465 FZ |
1530 | scsi_req_unref(req); |
1531 | } | |
1532 | ||
8e0a9320 FZ |
1533 | /* Cancel @req asynchronously. @notifier is added to @req's cancellation |
1534 | * notifier list, the bus will be notified the requests cancellation is | |
1535 | * completed. | |
1536 | * */ | |
1537 | void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier) | |
1538 | { | |
1539 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); | |
1540 | if (notifier) { | |
1541 | notifier_list_add(&req->cancel_notifiers, notifier); | |
1542 | } | |
3daa4107 PB |
1543 | if (req->io_canceled) { |
1544 | /* A blk_aio_cancel_async is pending; when it finishes, | |
1545 | * scsi_req_cancel_complete will be called and will | |
1546 | * call the notifier we just added. Just wait for that. | |
1547 | */ | |
1548 | assert(req->aiocb); | |
1549 | return; | |
1550 | } | |
1551 | /* Dropped in scsi_req_cancel_complete. */ | |
8e0a9320 FZ |
1552 | scsi_req_ref(req); |
1553 | scsi_req_dequeue(req); | |
1554 | req->io_canceled = true; | |
1555 | if (req->aiocb) { | |
4be74634 | 1556 | blk_aio_cancel_async(req->aiocb); |
2aeba9d8 FZ |
1557 | } else { |
1558 | scsi_req_cancel_complete(req); | |
8e0a9320 FZ |
1559 | } |
1560 | } | |
1561 | ||
94d3f98a PB |
1562 | void scsi_req_cancel(SCSIRequest *req) |
1563 | { | |
814589c4 | 1564 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); |
e88c591d PB |
1565 | if (!req->enqueued) { |
1566 | return; | |
94d3f98a | 1567 | } |
3daa4107 PB |
1568 | assert(!req->io_canceled); |
1569 | /* Dropped in scsi_req_cancel_complete. */ | |
94d3f98a PB |
1570 | scsi_req_ref(req); |
1571 | scsi_req_dequeue(req); | |
e88c591d | 1572 | req->io_canceled = true; |
a83cfd12 | 1573 | if (req->aiocb) { |
4be74634 | 1574 | blk_aio_cancel(req->aiocb); |
488eef2f PB |
1575 | } else { |
1576 | scsi_req_cancel_complete(req); | |
e88c591d | 1577 | } |
94d3f98a PB |
1578 | } |
1579 | ||
e48e84ea PB |
1580 | static int scsi_ua_precedence(SCSISense sense) |
1581 | { | |
1582 | if (sense.key != UNIT_ATTENTION) { | |
1583 | return INT_MAX; | |
1584 | } | |
1585 | if (sense.asc == 0x29 && sense.ascq == 0x04) { | |
1586 | /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */ | |
1587 | return 1; | |
1588 | } else if (sense.asc == 0x3F && sense.ascq == 0x01) { | |
1589 | /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */ | |
1590 | return 2; | |
1591 | } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) { | |
1592 | /* These two go with "all others". */ | |
1593 | ; | |
1594 | } else if (sense.asc == 0x29 && sense.ascq <= 0x07) { | |
1595 | /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0 | |
1596 | * POWER ON OCCURRED = 1 | |
1597 | * SCSI BUS RESET OCCURRED = 2 | |
1598 | * BUS DEVICE RESET FUNCTION OCCURRED = 3 | |
1599 | * I_T NEXUS LOSS OCCURRED = 7 | |
1600 | */ | |
1601 | return sense.ascq; | |
1602 | } else if (sense.asc == 0x2F && sense.ascq == 0x01) { | |
1603 | /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */ | |
1604 | return 8; | |
1605 | } | |
1606 | return (sense.asc << 8) | sense.ascq; | |
1607 | } | |
1608 | ||
1609 | void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense) | |
1610 | { | |
1611 | int prec1, prec2; | |
1612 | if (sense.key != UNIT_ATTENTION) { | |
1613 | return; | |
1614 | } | |
1615 | trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key, | |
1616 | sense.asc, sense.ascq); | |
1617 | ||
1618 | /* | |
1619 | * Override a pre-existing unit attention condition, except for a more | |
1620 | * important reset condition. | |
1621 | */ | |
1622 | prec1 = scsi_ua_precedence(sdev->unit_attention); | |
1623 | prec2 = scsi_ua_precedence(sense); | |
1624 | if (prec2 < prec1) { | |
1625 | sdev->unit_attention = sense; | |
1626 | } | |
1627 | } | |
1628 | ||
c7b48872 | 1629 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1630 | { |
1631 | SCSIRequest *req; | |
1632 | ||
8aad35f6 | 1633 | aio_context_acquire(blk_get_aio_context(sdev->conf.blk)); |
c557e889 PB |
1634 | while (!QTAILQ_EMPTY(&sdev->requests)) { |
1635 | req = QTAILQ_FIRST(&sdev->requests); | |
8aad35f6 | 1636 | scsi_req_cancel_async(req, NULL); |
c557e889 | 1637 | } |
8aad35f6 PB |
1638 | blk_drain(sdev->conf.blk); |
1639 | aio_context_release(blk_get_aio_context(sdev->conf.blk)); | |
e48e84ea | 1640 | scsi_device_set_ua(sdev, sense); |
c557e889 PB |
1641 | } |
1642 | ||
baa1bd89 PB |
1643 | static char *scsibus_get_dev_path(DeviceState *dev) |
1644 | { | |
e1dc6815 | 1645 | SCSIDevice *d = SCSI_DEVICE(dev); |
baa1bd89 | 1646 | DeviceState *hba = dev->parent_bus->parent; |
09e5ab63 | 1647 | char *id; |
b7c8c35f | 1648 | char *path; |
baa1bd89 | 1649 | |
09e5ab63 | 1650 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1651 | if (id) { |
b7c8c35f | 1652 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1653 | } else { |
b7c8c35f | 1654 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1655 | } |
b7c8c35f PB |
1656 | g_free(id); |
1657 | return path; | |
baa1bd89 PB |
1658 | } |
1659 | ||
db07c0f8 GN |
1660 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1661 | { | |
b9eea3e6 | 1662 | SCSIDevice *d = SCSI_DEVICE(dev); |
a5cf8262 JM |
1663 | return g_strdup_printf("channel@%x/%s@%x,%x", d->channel, |
1664 | qdev_fw_name(dev), d->id, d->lun); | |
f48a7a6e PB |
1665 | } |
1666 | ||
63f740dd PB |
1667 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1668 | ||
2c21ee76 | 1669 | static int put_scsi_requests(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 1670 | const VMStateField *field, JSONWriter *vmdesc) |
63f740dd PB |
1671 | { |
1672 | SCSIDevice *s = pv; | |
1673 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1674 | SCSIRequest *req; | |
1675 | ||
1676 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1677 | assert(!req->io_canceled); | |
f3126d65 | 1678 | assert(req->status == -1 && req->host_status == -1); |
63f740dd PB |
1679 | assert(req->enqueued); |
1680 | ||
18eef3bc | 1681 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
1682 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
1683 | qemu_put_be32s(f, &req->tag); | |
1684 | qemu_put_be32s(f, &req->lun); | |
1685 | if (bus->info->save_request) { | |
1686 | bus->info->save_request(f, req); | |
1687 | } | |
1688 | if (req->ops->save_request) { | |
1689 | req->ops->save_request(f, req); | |
1690 | } | |
1691 | } | |
1692 | qemu_put_sbyte(f, 0); | |
2c21ee76 JD |
1693 | |
1694 | return 0; | |
63f740dd PB |
1695 | } |
1696 | ||
2c21ee76 | 1697 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size, |
03fee66f | 1698 | const VMStateField *field) |
63f740dd PB |
1699 | { |
1700 | SCSIDevice *s = pv; | |
1701 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 1702 | int8_t sbyte; |
63f740dd | 1703 | |
18eef3bc | 1704 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
1705 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
1706 | uint32_t tag; | |
1707 | uint32_t lun; | |
1708 | SCSIRequest *req; | |
1709 | ||
1710 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1711 | qemu_get_be32s(f, &tag); | |
1712 | qemu_get_be32s(f, &lun); | |
1713 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
18eef3bc | 1714 | req->retry = (sbyte == 1); |
63f740dd PB |
1715 | if (bus->info->load_request) { |
1716 | req->hba_private = bus->info->load_request(f, req); | |
1717 | } | |
1718 | if (req->ops->load_request) { | |
1719 | req->ops->load_request(f, req); | |
1720 | } | |
1721 | ||
1722 | /* Just restart it later. */ | |
63f740dd PB |
1723 | scsi_req_enqueue_internal(req); |
1724 | ||
1725 | /* At this point, the request will be kept alive by the reference | |
1726 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1727 | * The HBA of course will add its own reference in the load_request | |
1728 | * callback if it needs to hold on the SCSIRequest. | |
1729 | */ | |
1730 | scsi_req_unref(req); | |
1731 | } | |
1732 | ||
1733 | return 0; | |
1734 | } | |
1735 | ||
12badfc2 | 1736 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
1737 | .name = "scsi-requests", |
1738 | .get = get_scsi_requests, | |
1739 | .put = put_scsi_requests, | |
1740 | }; | |
1741 | ||
2e323f03 FZ |
1742 | static bool scsi_sense_state_needed(void *opaque) |
1743 | { | |
1744 | SCSIDevice *s = opaque; | |
1745 | ||
1746 | return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD; | |
1747 | } | |
1748 | ||
1749 | static const VMStateDescription vmstate_scsi_sense_state = { | |
1750 | .name = "SCSIDevice/sense", | |
1751 | .version_id = 1, | |
1752 | .minimum_version_id = 1, | |
5cd8cada | 1753 | .needed = scsi_sense_state_needed, |
d49805ae | 1754 | .fields = (VMStateField[]) { |
2e323f03 FZ |
1755 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, |
1756 | SCSI_SENSE_BUF_SIZE_OLD, | |
1757 | SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD), | |
1758 | VMSTATE_END_OF_LIST() | |
1759 | } | |
1760 | }; | |
1761 | ||
63f740dd PB |
1762 | const VMStateDescription vmstate_scsi_device = { |
1763 | .name = "SCSIDevice", | |
1764 | .version_id = 1, | |
1765 | .minimum_version_id = 1, | |
63f740dd PB |
1766 | .fields = (VMStateField[]) { |
1767 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1768 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1769 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1770 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
2e323f03 | 1771 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD), |
63f740dd PB |
1772 | VMSTATE_UINT32(sense_len, SCSIDevice), |
1773 | { | |
1774 | .name = "requests", | |
1775 | .version_id = 0, | |
1776 | .field_exists = NULL, | |
1777 | .size = 0, /* ouch */ | |
1778 | .info = &vmstate_info_scsi_requests, | |
1779 | .flags = VMS_SINGLE, | |
1780 | .offset = 0, | |
1781 | }, | |
1782 | VMSTATE_END_OF_LIST() | |
2e323f03 | 1783 | }, |
5cd8cada JQ |
1784 | .subsections = (const VMStateDescription*[]) { |
1785 | &vmstate_scsi_sense_state, | |
1786 | NULL | |
63f740dd PB |
1787 | } |
1788 | }; | |
1789 | ||
42a90a89 PB |
1790 | static Property scsi_props[] = { |
1791 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), | |
1792 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
1793 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), | |
1794 | DEFINE_PROP_END_OF_LIST(), | |
1795 | }; | |
1796 | ||
39bffca2 AL |
1797 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
1798 | { | |
1799 | DeviceClass *k = DEVICE_CLASS(klass); | |
125ee0ed | 1800 | set_bit(DEVICE_CATEGORY_STORAGE, k->categories); |
a818a4b6 FZ |
1801 | k->bus_type = TYPE_SCSI_BUS; |
1802 | k->realize = scsi_qdev_realize; | |
a818a4b6 | 1803 | k->unrealize = scsi_qdev_unrealize; |
4f67d30b | 1804 | device_class_set_props(k, scsi_props); |
39bffca2 AL |
1805 | } |
1806 | ||
44fb6337 GA |
1807 | static void scsi_dev_instance_init(Object *obj) |
1808 | { | |
1809 | DeviceState *dev = DEVICE(obj); | |
e1dc6815 | 1810 | SCSIDevice *s = SCSI_DEVICE(dev); |
44fb6337 GA |
1811 | |
1812 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
1813 | "bootindex", NULL, | |
40c2281c | 1814 | &s->qdev); |
44fb6337 GA |
1815 | } |
1816 | ||
8c43a6f0 | 1817 | static const TypeInfo scsi_device_type_info = { |
b9eea3e6 AL |
1818 | .name = TYPE_SCSI_DEVICE, |
1819 | .parent = TYPE_DEVICE, | |
1820 | .instance_size = sizeof(SCSIDevice), | |
1821 | .abstract = true, | |
1822 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 1823 | .class_init = scsi_device_class_init, |
44fb6337 | 1824 | .instance_init = scsi_dev_instance_init, |
b9eea3e6 AL |
1825 | }; |
1826 | ||
42a90a89 PB |
1827 | static void scsi_bus_class_init(ObjectClass *klass, void *data) |
1828 | { | |
1829 | BusClass *k = BUS_CLASS(klass); | |
1830 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); | |
1831 | ||
1832 | k->get_dev_path = scsibus_get_dev_path; | |
1833 | k->get_fw_dev_path = scsibus_get_fw_dev_path; | |
1834 | k->check_address = scsi_bus_check_address; | |
1835 | hc->unplug = qdev_simple_device_unplug_cb; | |
1836 | } | |
1837 | ||
1838 | static const TypeInfo scsi_bus_info = { | |
1839 | .name = TYPE_SCSI_BUS, | |
1840 | .parent = TYPE_BUS, | |
1841 | .instance_size = sizeof(SCSIBus), | |
1842 | .class_init = scsi_bus_class_init, | |
1843 | .interfaces = (InterfaceInfo[]) { | |
1844 | { TYPE_HOTPLUG_HANDLER }, | |
1845 | { } | |
1846 | } | |
1847 | }; | |
1848 | ||
83f7d43a | 1849 | static void scsi_register_types(void) |
b9eea3e6 | 1850 | { |
0d936928 | 1851 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
1852 | type_register_static(&scsi_device_type_info); |
1853 | } | |
1854 | ||
83f7d43a | 1855 | type_init(scsi_register_types) |