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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" |
15e09912 | 6 | #include "qemu/hw-version.h" |
a27bd6c7 | 7 | #include "hw/qdev-properties.h" |
0d09e41a | 8 | #include "hw/scsi/scsi.h" |
ca77ee28 | 9 | #include "migration/qemu-file-types.h" |
d6454270 | 10 | #include "migration/vmstate.h" |
08e2c9f1 | 11 | #include "scsi/constants.h" |
fa1d36df | 12 | #include "sysemu/block-backend.h" |
9c17d615 | 13 | #include "sysemu/blockdev.h" |
2f780b6a | 14 | #include "sysemu/sysemu.h" |
54d31236 | 15 | #include "sysemu/runstate.h" |
5138efec | 16 | #include "trace.h" |
9c17d615 | 17 | #include "sysemu/dma.h" |
f348b6d1 | 18 | #include "qemu/cutils.h" |
d52affa7 | 19 | |
baa1bd89 | 20 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 21 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
71544d30 | 22 | static void scsi_req_dequeue(SCSIRequest *req); |
84642435 AH |
23 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len); |
24 | static void scsi_target_free_buf(SCSIRequest *req); | |
db07c0f8 | 25 | |
d52affa7 GH |
26 | static int next_scsi_bus; |
27 | ||
8ddf958e PB |
28 | static SCSIDevice *do_scsi_device_find(SCSIBus *bus, |
29 | int channel, int id, int lun, | |
30 | bool include_unrealized) | |
31 | { | |
32 | BusChild *kid; | |
33 | SCSIDevice *retval = NULL; | |
34 | ||
35 | QTAILQ_FOREACH_RCU(kid, &bus->qbus.children, sibling) { | |
36 | DeviceState *qdev = kid->child; | |
37 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
38 | ||
39 | if (dev->channel == channel && dev->id == id) { | |
40 | if (dev->lun == lun) { | |
41 | retval = dev; | |
42 | break; | |
43 | } | |
44 | ||
45 | /* | |
46 | * If we don't find exact match (channel/bus/lun), | |
47 | * we will return the first device which matches channel/bus | |
48 | */ | |
49 | ||
50 | if (!retval) { | |
51 | retval = dev; | |
52 | } | |
53 | } | |
54 | } | |
55 | ||
56 | /* | |
57 | * This function might run on the IO thread and we might race against | |
58 | * main thread hot-plugging the device. | |
59 | * We assume that as soon as .realized is set to true we can let | |
60 | * the user access the device. | |
61 | */ | |
62 | ||
26462a70 | 63 | if (retval && !include_unrealized && !qdev_is_realized(&retval->qdev)) { |
8ddf958e PB |
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 | 103 | int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, |
fe9d8927 | 104 | size_t buf_len, void *hba_private) |
ff34c32c PB |
105 | { |
106 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
107 | int rc; | |
108 | ||
109 | assert(cmd->len == 0); | |
fe9d8927 | 110 | rc = scsi_req_parse_cdb(dev, cmd, buf, buf_len); |
ff34c32c | 111 | if (bus->info->parse_cdb) { |
fe9d8927 | 112 | rc = bus->info->parse_cdb(dev, cmd, buf, buf_len, hba_private); |
ff34c32c PB |
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. */ |
739e95f5 PM |
137 | void scsi_bus_init_named(SCSIBus *bus, size_t bus_size, DeviceState *host, |
138 | const SCSIBusInfo *info, const char *bus_name) | |
d52affa7 | 139 | { |
d637e1dc | 140 | qbus_init(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)); | |
f63192b0 AB |
195 | s->bh = aio_bh_new_guarded(ctx, scsi_dma_restart_bh, s, |
196 | &DEVICE(s)->mem_reentrancy_guard); | |
71544d30 PB |
197 | qemu_bh_schedule(s->bh); |
198 | } | |
199 | } | |
200 | ||
42a90a89 | 201 | static bool scsi_bus_is_address_free(SCSIBus *bus, |
48805df9 YF |
202 | int channel, int target, int lun, |
203 | SCSIDevice **p_dev) | |
42a90a89 | 204 | { |
8ddf958e PB |
205 | SCSIDevice *d; |
206 | ||
207 | RCU_READ_LOCK_GUARD(); | |
208 | d = do_scsi_device_find(bus, channel, target, lun, true); | |
42a90a89 PB |
209 | if (d && d->lun == lun) { |
210 | if (p_dev) { | |
211 | *p_dev = d; | |
212 | } | |
213 | return false; | |
214 | } | |
215 | if (p_dev) { | |
216 | *p_dev = NULL; | |
217 | } | |
218 | return true; | |
219 | } | |
220 | ||
221 | static bool scsi_bus_check_address(BusState *qbus, DeviceState *qdev, Error **errp) | |
d52affa7 | 222 | { |
b9eea3e6 | 223 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
42a90a89 | 224 | SCSIBus *bus = SCSI_BUS(qbus); |
d52affa7 | 225 | |
0d3545e7 | 226 | if (dev->channel > bus->info->max_channel) { |
a818a4b6 | 227 | error_setg(errp, "bad scsi channel id: %d", dev->channel); |
42a90a89 | 228 | return false; |
0d3545e7 | 229 | } |
7e0380b9 | 230 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
a818a4b6 | 231 | error_setg(errp, "bad scsi device id: %d", dev->id); |
42a90a89 | 232 | return false; |
d52affa7 | 233 | } |
d3d250bd | 234 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { |
a818a4b6 | 235 | error_setg(errp, "bad scsi device lun: %d", dev->lun); |
42a90a89 PB |
236 | return false; |
237 | } | |
238 | ||
239 | if (dev->id != -1 && dev->lun != -1) { | |
240 | SCSIDevice *d; | |
241 | if (!scsi_bus_is_address_free(bus, dev->channel, dev->id, dev->lun, &d)) { | |
242 | error_setg(errp, "lun already used by '%s'", d->qdev.id); | |
243 | return false; | |
244 | } | |
d3d250bd | 245 | } |
d52affa7 | 246 | |
42a90a89 PB |
247 | return true; |
248 | } | |
249 | ||
250 | static void scsi_qdev_realize(DeviceState *qdev, Error **errp) | |
251 | { | |
252 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
253 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
254 | bool is_free; | |
255 | Error *local_err = NULL; | |
256 | ||
7e0380b9 PB |
257 | if (dev->id == -1) { |
258 | int id = -1; | |
259 | if (dev->lun == -1) { | |
260 | dev->lun = 0; | |
261 | } | |
262 | do { | |
42a90a89 PB |
263 | is_free = scsi_bus_is_address_free(bus, dev->channel, ++id, dev->lun, NULL); |
264 | } while (!is_free && id < bus->info->max_target); | |
265 | if (!is_free) { | |
a818a4b6 FZ |
266 | error_setg(errp, "no free target"); |
267 | return; | |
7e0380b9 PB |
268 | } |
269 | dev->id = id; | |
270 | } else if (dev->lun == -1) { | |
271 | int lun = -1; | |
272 | do { | |
42a90a89 PB |
273 | is_free = scsi_bus_is_address_free(bus, dev->channel, dev->id, ++lun, NULL); |
274 | } while (!is_free && lun < bus->info->max_lun); | |
275 | if (!is_free) { | |
a818a4b6 FZ |
276 | error_setg(errp, "no free lun"); |
277 | return; | |
7e0380b9 PB |
278 | } |
279 | dev->lun = lun; | |
d52affa7 | 280 | } |
d52affa7 | 281 | |
9af99d98 | 282 | QTAILQ_INIT(&dev->requests); |
a818a4b6 FZ |
283 | scsi_device_realize(dev, &local_err); |
284 | if (local_err) { | |
285 | error_propagate(errp, local_err); | |
286 | return; | |
71544d30 | 287 | } |
1a8c091c SH |
288 | dev->vmsentry = qdev_add_vm_change_state_handler(DEVICE(dev), |
289 | scsi_dma_restart_cb, dev); | |
01985dcf GH |
290 | } |
291 | ||
b69c3c21 | 292 | static void scsi_qdev_unrealize(DeviceState *qdev) |
01985dcf | 293 | { |
b9eea3e6 | 294 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 295 | |
71544d30 PB |
296 | if (dev->vmsentry) { |
297 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
298 | } | |
fb7b5c0d PB |
299 | |
300 | scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE)); | |
6b98c5aa | 301 | |
b69c3c21 | 302 | scsi_device_unrealize(dev); |
6b98c5aa | 303 | |
fb7b5c0d | 304 | blockdev_mark_auto_del(dev->conf.blk); |
d52affa7 GH |
305 | } |
306 | ||
d52affa7 | 307 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
4be74634 | 308 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, |
76534da7 | 309 | int unit, bool removable, int bootindex, |
395b9539 | 310 | bool share_rw, |
b8efb36b KW |
311 | BlockdevOnError rerror, |
312 | BlockdevOnError werror, | |
caad4eb3 | 313 | const char *serial, Error **errp) |
d52affa7 GH |
314 | { |
315 | const char *driver; | |
22647504 | 316 | char *name; |
d52affa7 | 317 | DeviceState *dev; |
0d074bf8 | 318 | DriveInfo *dinfo; |
d52affa7 | 319 | |
0d074bf8 PB |
320 | if (blk_is_sg(blk)) { |
321 | driver = "scsi-generic"; | |
322 | } else { | |
323 | dinfo = blk_legacy_dinfo(blk); | |
324 | if (dinfo && dinfo->media_cd) { | |
325 | driver = "scsi-cd"; | |
326 | } else { | |
327 | driver = "scsi-hd"; | |
328 | } | |
329 | } | |
3e80f690 | 330 | dev = qdev_new(driver); |
22647504 | 331 | name = g_strdup_printf("legacy[%d]", unit); |
d2623129 | 332 | object_property_add_child(OBJECT(bus), name, OBJECT(dev)); |
22647504 PB |
333 | g_free(name); |
334 | ||
d52affa7 | 335 | qdev_prop_set_uint32(dev, "scsi-id", unit); |
ce4e7e46 | 336 | if (bootindex >= 0) { |
5325cc34 | 337 | object_property_set_int(OBJECT(dev), "bootindex", bootindex, |
8dece34f | 338 | &error_abort); |
ce4e7e46 | 339 | } |
efba1595 | 340 | if (object_property_find(OBJECT(dev), "removable")) { |
2d1fd261 SH |
341 | qdev_prop_set_bit(dev, "removable", removable); |
342 | } | |
efba1595 | 343 | if (serial && object_property_find(OBJECT(dev), "serial")) { |
76534da7 KW |
344 | qdev_prop_set_string(dev, "serial", serial); |
345 | } | |
668f62ec | 346 | if (!qdev_prop_set_drive_err(dev, "drive", blk, errp)) { |
02a5c4c9 | 347 | object_unparent(OBJECT(dev)); |
18846dee MA |
348 | return NULL; |
349 | } | |
668f62ec | 350 | if (!object_property_set_bool(OBJECT(dev), "share-rw", share_rw, errp)) { |
395b9539 FZ |
351 | object_unparent(OBJECT(dev)); |
352 | return NULL; | |
353 | } | |
b8efb36b KW |
354 | |
355 | qdev_prop_set_enum(dev, "rerror", rerror); | |
356 | qdev_prop_set_enum(dev, "werror", werror); | |
357 | ||
668f62ec | 358 | if (!qdev_realize_and_unref(dev, &bus->qbus, errp)) { |
02a5c4c9 | 359 | object_unparent(OBJECT(dev)); |
33e66b86 | 360 | return NULL; |
caad4eb3 | 361 | } |
b9eea3e6 | 362 | return SCSI_DEVICE(dev); |
d52affa7 GH |
363 | } |
364 | ||
14545097 | 365 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 366 | { |
42e766a2 | 367 | Location loc; |
d52affa7 | 368 | DriveInfo *dinfo; |
caad4eb3 | 369 | int unit; |
d52affa7 | 370 | |
42e766a2 | 371 | loc_push_none(&loc); |
d3d250bd | 372 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
373 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
374 | if (dinfo == NULL) { | |
375 | continue; | |
376 | } | |
42e766a2 | 377 | qemu_opts_loc_restore(dinfo->opts); |
4be74634 | 378 | scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo), |
b8efb36b KW |
379 | unit, false, -1, false, |
380 | BLOCKDEV_ON_ERROR_AUTO, | |
381 | BLOCKDEV_ON_ERROR_AUTO, | |
382 | NULL, &error_fatal); | |
d52affa7 | 383 | } |
42e766a2 | 384 | loc_pop(&loc); |
d52affa7 | 385 | } |
89b08ae1 | 386 | |
12a08998 PB |
387 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
388 | { | |
389 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
390 | scsi_req_complete(req, CHECK_CONDITION); | |
391 | return 0; | |
392 | } | |
393 | ||
394 | static const struct SCSIReqOps reqops_invalid_field = { | |
395 | .size = sizeof(SCSIRequest), | |
396 | .send_command = scsi_invalid_field | |
397 | }; | |
398 | ||
afa46c46 PB |
399 | /* SCSIReqOps implementation for invalid commands. */ |
400 | ||
401 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
402 | { | |
403 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
404 | scsi_req_complete(req, CHECK_CONDITION); | |
405 | return 0; | |
406 | } | |
407 | ||
adcf2754 | 408 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
409 | .size = sizeof(SCSIRequest), |
410 | .send_command = scsi_invalid_command | |
411 | }; | |
412 | ||
6dc06f08 PB |
413 | /* SCSIReqOps implementation for unit attention conditions. */ |
414 | ||
415 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
416 | { | |
0bf8264e | 417 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { |
6dc06f08 PB |
418 | scsi_req_build_sense(req, req->dev->unit_attention); |
419 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
420 | scsi_req_build_sense(req, req->bus->unit_attention); | |
421 | } | |
422 | scsi_req_complete(req, CHECK_CONDITION); | |
423 | return 0; | |
424 | } | |
425 | ||
adcf2754 | 426 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
427 | .size = sizeof(SCSIRequest), |
428 | .send_command = scsi_unit_attention | |
429 | }; | |
430 | ||
fdaef069 PB |
431 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
432 | an invalid LUN. */ | |
433 | ||
434 | typedef struct SCSITargetReq SCSITargetReq; | |
435 | ||
436 | struct SCSITargetReq { | |
437 | SCSIRequest req; | |
438 | int len; | |
84642435 AH |
439 | uint8_t *buf; |
440 | int buf_len; | |
fdaef069 PB |
441 | }; |
442 | ||
443 | static void store_lun(uint8_t *outbuf, int lun) | |
444 | { | |
445 | if (lun < 256) { | |
8cfe8013 ML |
446 | /* Simple logical unit addressing method*/ |
447 | outbuf[0] = 0; | |
fdaef069 | 448 | outbuf[1] = lun; |
8cfe8013 ML |
449 | } else { |
450 | /* Flat space addressing method */ | |
451 | outbuf[0] = 0x40 | (lun >> 8); | |
452 | outbuf[1] = (lun & 255); | |
fdaef069 | 453 | } |
fdaef069 PB |
454 | } |
455 | ||
456 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
457 | { | |
0866aca1 | 458 | BusChild *kid; |
0d3545e7 | 459 | int channel, id; |
8cfe8013 ML |
460 | uint8_t tmp[8] = {0}; |
461 | int len = 0; | |
462 | GByteArray *buf; | |
ba74307c | 463 | |
fdaef069 PB |
464 | if (r->req.cmd.xfer < 16) { |
465 | return false; | |
466 | } | |
467 | if (r->req.cmd.buf[2] > 2) { | |
468 | return false; | |
469 | } | |
8cfe8013 ML |
470 | |
471 | /* reserve space for 63 LUNs*/ | |
472 | buf = g_byte_array_sized_new(512); | |
473 | ||
0d3545e7 | 474 | channel = r->req.dev->channel; |
ba74307c | 475 | id = r->req.dev->id; |
2d24a646 | 476 | |
8cfe8013 ML |
477 | /* add size (will be updated later to correct value */ |
478 | g_byte_array_append(buf, tmp, 8); | |
479 | len += 8; | |
2d24a646 | 480 | |
8cfe8013 ML |
481 | /* add LUN0 */ |
482 | g_byte_array_append(buf, tmp, 8); | |
483 | len += 8; | |
ba74307c | 484 | |
8cfe8013 ML |
485 | WITH_RCU_READ_LOCK_GUARD() { |
486 | QTAILQ_FOREACH_RCU(kid, &r->req.bus->qbus.children, sibling) { | |
487 | DeviceState *qdev = kid->child; | |
488 | SCSIDevice *dev = SCSI_DEVICE(qdev); | |
489 | ||
4382f167 SH |
490 | if (dev->channel == channel && dev->id == id && dev->lun != 0 && |
491 | qdev_is_realized(&dev->qdev)) { | |
8cfe8013 ML |
492 | store_lun(tmp, dev->lun); |
493 | g_byte_array_append(buf, tmp, 8); | |
494 | len += 8; | |
ba74307c | 495 | } |
ba74307c PB |
496 | } |
497 | } | |
ba74307c | 498 | |
8cfe8013 ML |
499 | r->buf_len = len; |
500 | r->buf = g_byte_array_free(buf, FALSE); | |
501 | r->len = MIN(len, r->req.cmd.xfer & ~7); | |
2d24a646 | 502 | |
8cfe8013 ML |
503 | /* store the LUN list length */ |
504 | stl_be_p(&r->buf[0], len - 8); | |
fdaef069 PB |
505 | return true; |
506 | } | |
507 | ||
508 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
509 | { | |
510 | assert(r->req.dev->lun != r->req.lun); | |
84642435 AH |
511 | |
512 | scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN); | |
513 | ||
fdaef069 PB |
514 | if (r->req.cmd.buf[1] & 0x2) { |
515 | /* Command support data - optional, not implemented */ | |
516 | return false; | |
517 | } | |
518 | ||
519 | if (r->req.cmd.buf[1] & 0x1) { | |
520 | /* Vital product data */ | |
521 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
522 | r->buf[r->len++] = page_code ; /* this page */ |
523 | r->buf[r->len++] = 0x00; | |
524 | ||
525 | switch (page_code) { | |
526 | case 0x00: /* Supported page codes, mandatory */ | |
527 | { | |
528 | int pages; | |
529 | pages = r->len++; | |
530 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
531 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
532 | break; | |
533 | } | |
534 | default: | |
535 | return false; | |
536 | } | |
537 | /* done with EVPD */ | |
84642435 | 538 | assert(r->len < r->buf_len); |
fdaef069 PB |
539 | r->len = MIN(r->req.cmd.xfer, r->len); |
540 | return true; | |
541 | } | |
542 | ||
543 | /* Standard INQUIRY data */ | |
544 | if (r->req.cmd.buf[2] != 0) { | |
545 | return false; | |
546 | } | |
547 | ||
548 | /* PAGE CODE == 0 */ | |
84642435 | 549 | r->len = MIN(r->req.cmd.xfer, SCSI_INQUIRY_LEN); |
fdaef069 PB |
550 | memset(r->buf, 0, r->len); |
551 | if (r->req.lun != 0) { | |
552 | r->buf[0] = TYPE_NO_LUN; | |
553 | } else { | |
554 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
555 | r->buf[2] = 5; /* Version */ | |
556 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
557 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 558 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
559 | memcpy(&r->buf[8], "QEMU ", 8); |
560 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
35c2c8dc | 561 | pstrcpy((char *) &r->buf[32], 4, qemu_hw_version()); |
fdaef069 PB |
562 | } |
563 | return true; | |
564 | } | |
565 | ||
6959e508 JL |
566 | static size_t scsi_sense_len(SCSIRequest *req) |
567 | { | |
568 | if (req->dev->type == TYPE_SCANNER) | |
569 | return SCSI_SENSE_LEN_SCANNER; | |
570 | else | |
571 | return SCSI_SENSE_LEN; | |
572 | } | |
573 | ||
fdaef069 PB |
574 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) |
575 | { | |
576 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
b07fbce6 | 577 | int fixed_sense = (req->cmd.buf[1] & 1) == 0; |
fdaef069 | 578 | |
b07fbce6 HR |
579 | if (req->lun != 0 && |
580 | buf[0] != INQUIRY && buf[0] != REQUEST_SENSE) { | |
ded6ddc5 HR |
581 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); |
582 | scsi_req_complete(req, CHECK_CONDITION); | |
583 | return 0; | |
584 | } | |
fdaef069 PB |
585 | switch (buf[0]) { |
586 | case REPORT_LUNS: | |
587 | if (!scsi_target_emulate_report_luns(r)) { | |
588 | goto illegal_request; | |
589 | } | |
590 | break; | |
591 | case INQUIRY: | |
592 | if (!scsi_target_emulate_inquiry(r)) { | |
593 | goto illegal_request; | |
594 | } | |
595 | break; | |
739df215 | 596 | case REQUEST_SENSE: |
6959e508 | 597 | scsi_target_alloc_buf(&r->req, scsi_sense_len(req)); |
b07fbce6 HR |
598 | if (req->lun != 0) { |
599 | const struct SCSISense sense = SENSE_CODE(LUN_NOT_SUPPORTED); | |
600 | ||
f68d98b2 PB |
601 | r->len = scsi_build_sense_buf(r->buf, req->cmd.xfer, |
602 | sense, fixed_sense); | |
b07fbce6 HR |
603 | } else { |
604 | r->len = scsi_device_get_sense(r->req.dev, r->buf, | |
605 | MIN(req->cmd.xfer, r->buf_len), | |
606 | fixed_sense); | |
607 | } | |
3653d8c4 | 608 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 609 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
610 | r->req.dev->sense_len = 0; |
611 | r->req.dev->sense_is_ua = false; | |
612 | } | |
739df215 | 613 | break; |
1cb27d92 PB |
614 | case TEST_UNIT_READY: |
615 | break; | |
fdaef069 | 616 | default: |
ded6ddc5 | 617 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); |
fdaef069 PB |
618 | scsi_req_complete(req, CHECK_CONDITION); |
619 | return 0; | |
620 | illegal_request: | |
621 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
622 | scsi_req_complete(req, CHECK_CONDITION); | |
623 | return 0; | |
624 | } | |
625 | ||
626 | if (!r->len) { | |
627 | scsi_req_complete(req, GOOD); | |
628 | } | |
629 | return r->len; | |
630 | } | |
631 | ||
632 | static void scsi_target_read_data(SCSIRequest *req) | |
633 | { | |
634 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
635 | uint32_t n; | |
636 | ||
637 | n = r->len; | |
638 | if (n > 0) { | |
639 | r->len = 0; | |
640 | scsi_req_data(&r->req, n); | |
641 | } else { | |
642 | scsi_req_complete(&r->req, GOOD); | |
643 | } | |
644 | } | |
645 | ||
646 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
647 | { | |
648 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
649 | ||
650 | return r->buf; | |
651 | } | |
652 | ||
84642435 AH |
653 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len) |
654 | { | |
655 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
656 | ||
657 | r->buf = g_malloc(len); | |
658 | r->buf_len = len; | |
659 | ||
660 | return r->buf; | |
661 | } | |
662 | ||
663 | static void scsi_target_free_buf(SCSIRequest *req) | |
664 | { | |
665 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
666 | ||
667 | g_free(r->buf); | |
668 | } | |
669 | ||
adcf2754 | 670 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
671 | .size = sizeof(SCSITargetReq), |
672 | .send_command = scsi_target_send_command, | |
673 | .read_data = scsi_target_read_data, | |
674 | .get_buf = scsi_target_get_buf, | |
84642435 | 675 | .free_req = scsi_target_free_buf, |
fdaef069 PB |
676 | }; |
677 | ||
678 | ||
adcf2754 PB |
679 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
680 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
681 | { |
682 | SCSIRequest *req; | |
cac3c384 PB |
683 | SCSIBus *bus = scsi_bus_from_device(d); |
684 | BusState *qbus = BUS(bus); | |
61e68b3f FZ |
685 | const int memset_off = offsetof(SCSIRequest, sense) |
686 | + sizeof(req->sense); | |
89b08ae1 | 687 | |
633dccb4 | 688 | req = g_malloc(reqops->size); |
61e68b3f | 689 | memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off); |
5c6c0e51 | 690 | req->refcount = 1; |
cac3c384 | 691 | req->bus = bus; |
89b08ae1 GH |
692 | req->dev = d; |
693 | req->tag = tag; | |
694 | req->lun = lun; | |
c5bf71a9 | 695 | req->hba_private = hba_private; |
ed3a34a3 | 696 | req->status = -1; |
f3126d65 | 697 | req->host_status = -1; |
8dbd4574 | 698 | req->ops = reqops; |
cac3c384 PB |
699 | object_ref(OBJECT(d)); |
700 | object_ref(OBJECT(qbus->parent)); | |
8e0a9320 | 701 | notifier_list_init(&req->cancel_notifiers); |
5138efec | 702 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
703 | return req; |
704 | } | |
705 | ||
c5bf71a9 | 706 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
fe9d8927 | 707 | uint8_t *buf, size_t buf_len, void *hba_private) |
43a2b339 | 708 | { |
6dc06f08 | 709 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
769998a1 | 710 | const SCSIReqOps *ops; |
ff34c32c | 711 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d); |
c39ce112 | 712 | SCSIRequest *req; |
769998a1 PB |
713 | SCSICommand cmd = { .len = 0 }; |
714 | int ret; | |
715 | ||
6d1511ce JM |
716 | if (buf_len == 0) { |
717 | trace_scsi_req_parse_bad(d->id, lun, tag, 0); | |
718 | goto invalid_opcode; | |
719 | } | |
720 | ||
769998a1 PB |
721 | if ((d->unit_attention.key == UNIT_ATTENTION || |
722 | bus->unit_attention.key == UNIT_ATTENTION) && | |
723 | (buf[0] != INQUIRY && | |
724 | buf[0] != REPORT_LUNS && | |
725 | buf[0] != GET_CONFIGURATION && | |
726 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
727 | ||
728 | /* | |
729 | * If we already have a pending unit attention condition, | |
730 | * report this one before triggering another one. | |
731 | */ | |
732 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
733 | ops = &reqops_unit_attention; | |
734 | } else if (lun != d->lun || | |
735 | buf[0] == REPORT_LUNS || | |
736 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
737 | ops = &reqops_target_command; | |
738 | } else { | |
739 | ops = NULL; | |
740 | } | |
afa46c46 | 741 | |
ff34c32c | 742 | if (ops != NULL || !sc->parse_cdb) { |
fe9d8927 | 743 | ret = scsi_req_parse_cdb(d, &cmd, buf, buf_len); |
ff34c32c | 744 | } else { |
fe9d8927 | 745 | ret = sc->parse_cdb(d, &cmd, buf, buf_len, hba_private); |
ff34c32c PB |
746 | } |
747 | ||
769998a1 | 748 | if (ret != 0) { |
afa46c46 | 749 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); |
6d1511ce | 750 | invalid_opcode: |
afa46c46 PB |
751 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); |
752 | } else { | |
769998a1 | 753 | assert(cmd.len != 0); |
afa46c46 PB |
754 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], |
755 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 756 | if (cmd.lba != -1) { |
afa46c46 PB |
757 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
758 | cmd.lba); | |
759 | } | |
fdaef069 | 760 | |
12a08998 PB |
761 | if (cmd.xfer > INT32_MAX) { |
762 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
769998a1 PB |
763 | } else if (ops) { |
764 | req = scsi_req_alloc(ops, d, tag, lun, hba_private); | |
fdaef069 | 765 | } else { |
b9eea3e6 | 766 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 767 | } |
afa46c46 PB |
768 | } |
769 | ||
770 | req->cmd = cmd; | |
5f412602 | 771 | req->residual = req->cmd.xfer; |
01e95455 | 772 | |
98254542 PB |
773 | switch (buf[0]) { |
774 | case INQUIRY: | |
775 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
776 | break; | |
777 | case TEST_UNIT_READY: | |
778 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
779 | break; | |
780 | case REPORT_LUNS: | |
781 | trace_scsi_report_luns(d->id, lun, tag); | |
782 | break; | |
783 | case REQUEST_SENSE: | |
784 | trace_scsi_request_sense(d->id, lun, tag); | |
785 | break; | |
786 | default: | |
787 | break; | |
788 | } | |
789 | ||
c39ce112 | 790 | return req; |
43a2b339 PB |
791 | } |
792 | ||
0c34459b PB |
793 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
794 | { | |
12010e7b | 795 | return req->ops->get_buf(req); |
0c34459b PB |
796 | } |
797 | ||
6dc06f08 PB |
798 | static void scsi_clear_unit_attention(SCSIRequest *req) |
799 | { | |
800 | SCSISense *ua; | |
801 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
802 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
803 | return; | |
804 | } | |
805 | ||
806 | /* | |
807 | * If an INQUIRY command enters the enabled command state, | |
808 | * the device server shall [not] clear any unit attention condition; | |
809 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
810 | */ | |
811 | if (req->cmd.buf[0] == INQUIRY || | |
812 | req->cmd.buf[0] == GET_CONFIGURATION || | |
813 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
814 | return; | |
815 | } | |
816 | ||
817 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
818 | ua = &req->dev->unit_attention; | |
819 | } else { | |
820 | ua = &req->bus->unit_attention; | |
821 | } | |
822 | ||
823 | /* | |
824 | * If a REPORT LUNS command enters the enabled command state, [...] | |
825 | * the device server shall clear any pending unit attention condition | |
826 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
827 | */ | |
828 | if (req->cmd.buf[0] == REPORT_LUNS && | |
829 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
830 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
831 | return; | |
832 | } | |
833 | ||
834 | *ua = SENSE_CODE(NO_SENSE); | |
835 | } | |
836 | ||
74382217 HR |
837 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
838 | { | |
6dc06f08 PB |
839 | int ret; |
840 | ||
b45ef674 PB |
841 | assert(len >= 14); |
842 | if (!req->sense_len) { | |
74382217 HR |
843 | return 0; |
844 | } | |
6dc06f08 | 845 | |
37b6045c | 846 | ret = scsi_convert_sense(req->sense, req->sense_len, buf, len, true); |
6dc06f08 PB |
847 | |
848 | /* | |
849 | * FIXME: clearing unit attention conditions upon autosense should be done | |
850 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
851 | * (SAM-5, 5.14). | |
852 | * | |
853 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
854 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 855 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 856 | */ |
3653d8c4 | 857 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 858 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
859 | req->dev->sense_len = 0; |
860 | req->dev->sense_is_ua = false; | |
861 | } | |
6dc06f08 | 862 | return ret; |
b45ef674 PB |
863 | } |
864 | ||
865 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
866 | { | |
37b6045c | 867 | return scsi_convert_sense(dev->sense, dev->sense_len, buf, len, fixed); |
b45ef674 PB |
868 | } |
869 | ||
870 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
871 | { | |
872 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
873 | sense.key, sense.asc, sense.ascq); | |
a3760467 | 874 | req->sense_len = scsi_build_sense(req->sense, sense); |
74382217 HR |
875 | } |
876 | ||
63f740dd | 877 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 878 | { |
5c6c0e51 HR |
879 | assert(!req->enqueued); |
880 | scsi_req_ref(req); | |
3d5aba97 PB |
881 | if (req->bus->info->get_sg_list) { |
882 | req->sg = req->bus->info->get_sg_list(req); | |
883 | } else { | |
884 | req->sg = NULL; | |
885 | } | |
5c6c0e51 HR |
886 | req->enqueued = true; |
887 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 888 | } |
fc4f0754 | 889 | |
63f740dd PB |
890 | int32_t scsi_req_enqueue(SCSIRequest *req) |
891 | { | |
892 | int32_t rc; | |
893 | ||
894 | assert(!req->retry); | |
895 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 896 | scsi_req_ref(req); |
c39ce112 | 897 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
898 | scsi_req_unref(req); |
899 | return rc; | |
89b08ae1 GH |
900 | } |
901 | ||
a1f0cce2 | 902 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 903 | { |
5138efec | 904 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 905 | req->retry = false; |
e8637c90 JK |
906 | if (req->enqueued) { |
907 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
908 | req->enqueued = false; | |
ad2d30f7 | 909 | scsi_req_unref(req); |
e8637c90 JK |
910 | } |
911 | } | |
912 | ||
06b86357 PB |
913 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
914 | { | |
915 | /* MMC-6, paragraph 6.7. */ | |
916 | switch (type) { | |
917 | case 0: | |
918 | if ((data_type & 3) == 0) { | |
919 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
920 | return 16 * num_desc + 8; | |
921 | } else { | |
922 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
923 | return 6 * num_desc + 8; | |
924 | } | |
925 | case 1: | |
926 | case 4: | |
927 | case 5: | |
928 | return 8 * num_desc + 8; | |
929 | case 2: | |
930 | return 2048 * num_desc + 8; | |
931 | case 3: | |
932 | return 16 * num_desc + 8; | |
933 | default: | |
934 | return 8; | |
935 | } | |
936 | } | |
937 | ||
e4b65262 CM |
938 | static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf) |
939 | { | |
940 | int byte_block = (buf[2] >> 2) & 0x1; | |
941 | int type = (buf[2] >> 4) & 0x1; | |
942 | int xfer_unit; | |
943 | ||
944 | if (byte_block) { | |
945 | if (type) { | |
946 | xfer_unit = dev->blocksize; | |
947 | } else { | |
948 | xfer_unit = 512; | |
949 | } | |
950 | } else { | |
951 | xfer_unit = 1; | |
952 | } | |
953 | ||
954 | return xfer_unit; | |
955 | } | |
956 | ||
1894df02 | 957 | static int ata_passthrough_12_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
958 | { |
959 | int length = buf[2] & 0x3; | |
960 | int xfer; | |
961 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
962 | ||
963 | switch (length) { | |
964 | case 0: | |
965 | case 3: /* USB-specific. */ | |
d83c951c | 966 | default: |
e4b65262 CM |
967 | xfer = 0; |
968 | break; | |
969 | case 1: | |
970 | xfer = buf[3]; | |
971 | break; | |
972 | case 2: | |
973 | xfer = buf[4]; | |
974 | break; | |
975 | } | |
976 | ||
977 | return xfer * unit; | |
978 | } | |
979 | ||
1894df02 | 980 | static int ata_passthrough_16_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
981 | { |
982 | int extend = buf[1] & 0x1; | |
983 | int length = buf[2] & 0x3; | |
984 | int xfer; | |
985 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
986 | ||
987 | switch (length) { | |
988 | case 0: | |
989 | case 3: /* USB-specific. */ | |
d83c951c | 990 | default: |
e4b65262 CM |
991 | xfer = 0; |
992 | break; | |
993 | case 1: | |
994 | xfer = buf[4]; | |
995 | xfer |= (extend ? buf[3] << 8 : 0); | |
996 | break; | |
997 | case 2: | |
998 | xfer = buf[6]; | |
999 | xfer |= (extend ? buf[5] << 8 : 0); | |
1000 | break; | |
1001 | } | |
1002 | ||
1003 | return xfer * unit; | |
1004 | } | |
1005 | ||
1894df02 | 1006 | static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
bb729f75 | 1007 | { |
1894df02 | 1008 | cmd->xfer = scsi_cdb_xfer(buf); |
2599aece | 1009 | switch (buf[0]) { |
2ec749cb | 1010 | case TEST_UNIT_READY: |
5e30a07d | 1011 | case REWIND: |
2ec749cb | 1012 | case START_STOP: |
00a01ad4 | 1013 | case SET_CAPACITY: |
2ec749cb | 1014 | case WRITE_FILEMARKS: |
06b86357 | 1015 | case WRITE_FILEMARKS_16: |
2ec749cb | 1016 | case SPACE: |
a5e3d9ef BK |
1017 | case RESERVE: |
1018 | case RELEASE: | |
2ec749cb GH |
1019 | case ERASE: |
1020 | case ALLOW_MEDIUM_REMOVAL: | |
2ec749cb GH |
1021 | case SEEK_10: |
1022 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
1023 | case SYNCHRONIZE_CACHE_16: |
1024 | case LOCATE_16: | |
2ec749cb | 1025 | case LOCK_UNLOCK_CACHE: |
2ec749cb GH |
1026 | case SET_CD_SPEED: |
1027 | case SET_LIMITS: | |
5e30a07d | 1028 | case WRITE_LONG_10: |
2ec749cb | 1029 | case UPDATE_BLOCK: |
06b86357 PB |
1030 | case RESERVE_TRACK: |
1031 | case SET_READ_AHEAD: | |
1032 | case PRE_FETCH: | |
1033 | case PRE_FETCH_16: | |
1034 | case ALLOW_OVERWRITE: | |
2599aece | 1035 | cmd->xfer = 0; |
2ec749cb | 1036 | break; |
d12ad44c PB |
1037 | case VERIFY_10: |
1038 | case VERIFY_12: | |
1039 | case VERIFY_16: | |
1040 | if ((buf[1] & 2) == 0) { | |
1041 | cmd->xfer = 0; | |
7ef8cf9a | 1042 | } else if ((buf[1] & 4) != 0) { |
d12ad44c PB |
1043 | cmd->xfer = 1; |
1044 | } | |
1045 | cmd->xfer *= dev->blocksize; | |
1046 | break; | |
2ec749cb GH |
1047 | case MODE_SENSE: |
1048 | break; | |
5e30a07d | 1049 | case WRITE_SAME_10: |
a5ee9085 | 1050 | case WRITE_SAME_16: |
4397a018 | 1051 | cmd->xfer = buf[1] & 1 ? 0 : dev->blocksize; |
2ec749cb | 1052 | break; |
5e30a07d | 1053 | case READ_CAPACITY_10: |
2599aece | 1054 | cmd->xfer = 8; |
2ec749cb GH |
1055 | break; |
1056 | case READ_BLOCK_LIMITS: | |
2599aece | 1057 | cmd->xfer = 6; |
2ec749cb | 1058 | break; |
2ec749cb | 1059 | case SEND_VOLUME_TAG: |
06b86357 PB |
1060 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
1061 | if (dev->type == TYPE_ROM) { | |
1062 | cmd->xfer = buf[10] | (buf[9] << 8); | |
1063 | } else { | |
1064 | cmd->xfer = buf[9] | (buf[8] << 8); | |
1065 | } | |
2ec749cb | 1066 | break; |
f62d0594 PB |
1067 | case WRITE_6: |
1068 | /* length 0 means 256 blocks */ | |
1069 | if (cmd->xfer == 0) { | |
1070 | cmd->xfer = 256; | |
1071 | } | |
c4ce4c4b | 1072 | /* fall through */ |
2ec749cb | 1073 | case WRITE_10: |
5e30a07d | 1074 | case WRITE_VERIFY_10: |
2ec749cb GH |
1075 | case WRITE_12: |
1076 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1077 | case WRITE_16: |
1078 | case WRITE_VERIFY_16: | |
2599aece | 1079 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1080 | break; |
2ec749cb GH |
1081 | case READ_6: |
1082 | case READ_REVERSE: | |
f62d0594 PB |
1083 | /* length 0 means 256 blocks */ |
1084 | if (cmd->xfer == 0) { | |
1085 | cmd->xfer = 256; | |
1086 | } | |
c4ce4c4b | 1087 | /* fall through */ |
f62d0594 | 1088 | case READ_10: |
2ec749cb | 1089 | case READ_12: |
bd536cf3 | 1090 | case READ_16: |
2599aece | 1091 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1092 | break; |
06b86357 PB |
1093 | case FORMAT_UNIT: |
1094 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
1095 | * for block devices are restricted to the header right now. */ | |
1096 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
1097 | cmd->xfer = 12; | |
1098 | } else { | |
1099 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
1100 | } | |
1101 | break; | |
2ec749cb | 1102 | case INQUIRY: |
06b86357 PB |
1103 | case RECEIVE_DIAGNOSTIC: |
1104 | case SEND_DIAGNOSTIC: | |
2599aece | 1105 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 1106 | break; |
06b86357 PB |
1107 | case READ_CD: |
1108 | case READ_BUFFER: | |
1109 | case WRITE_BUFFER: | |
1110 | case SEND_CUE_SHEET: | |
1111 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1112 | break; | |
1113 | case PERSISTENT_RESERVE_OUT: | |
1114 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
1115 | break; | |
1116 | case ERASE_12: | |
1117 | if (dev->type == TYPE_ROM) { | |
1118 | /* MMC command GET PERFORMANCE. */ | |
1119 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
1120 | buf[10], buf[1] & 0x1f); | |
1121 | } | |
1122 | break; | |
1123 | case MECHANISM_STATUS: | |
1124 | case READ_DVD_STRUCTURE: | |
1125 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
1126 | case MAINTENANCE_OUT: |
1127 | case MAINTENANCE_IN: | |
2599aece | 1128 | if (dev->type == TYPE_ROM) { |
c7126d5b | 1129 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 1130 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
1131 | } |
1132 | break; | |
e4b65262 CM |
1133 | case ATA_PASSTHROUGH_12: |
1134 | if (dev->type == TYPE_ROM) { | |
1135 | /* BLANK command of MMC */ | |
1136 | cmd->xfer = 0; | |
1137 | } else { | |
1894df02 | 1138 | cmd->xfer = ata_passthrough_12_xfer(dev, buf); |
e4b65262 CM |
1139 | } |
1140 | break; | |
1141 | case ATA_PASSTHROUGH_16: | |
1894df02 | 1142 | cmd->xfer = ata_passthrough_16_xfer(dev, buf); |
e4b65262 | 1143 | break; |
2ec749cb GH |
1144 | } |
1145 | return 0; | |
1146 | } | |
1147 | ||
1894df02 | 1148 | static int scsi_req_stream_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 1149 | { |
2599aece | 1150 | switch (buf[0]) { |
2ec749cb | 1151 | /* stream commands */ |
06b86357 PB |
1152 | case ERASE_12: |
1153 | case ERASE_16: | |
1154 | cmd->xfer = 0; | |
1155 | break; | |
2ec749cb GH |
1156 | case READ_6: |
1157 | case READ_REVERSE: | |
1158 | case RECOVER_BUFFERED_DATA: | |
1159 | case WRITE_6: | |
2599aece PB |
1160 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); |
1161 | if (buf[1] & 0x01) { /* fixed */ | |
1162 | cmd->xfer *= dev->blocksize; | |
1163 | } | |
2ec749cb | 1164 | break; |
065c2599 PB |
1165 | case READ_16: |
1166 | case READ_REVERSE_16: | |
1167 | case VERIFY_16: | |
1168 | case WRITE_16: | |
065c2599 PB |
1169 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); |
1170 | if (buf[1] & 0x01) { /* fixed */ | |
1171 | cmd->xfer *= dev->blocksize; | |
1172 | } | |
1173 | break; | |
2ec749cb | 1174 | case REWIND: |
15e58a21 | 1175 | case LOAD_UNLOAD: |
2599aece | 1176 | cmd->xfer = 0; |
2ec749cb | 1177 | break; |
06b86357 PB |
1178 | case SPACE_16: |
1179 | cmd->xfer = buf[13] | (buf[12] << 8); | |
1180 | break; | |
1181 | case READ_POSITION: | |
9ce1bb2d CH |
1182 | switch (buf[1] & 0x1f) /* operation code */ { |
1183 | case SHORT_FORM_BLOCK_ID: | |
1184 | case SHORT_FORM_VENDOR_SPECIFIC: | |
1185 | cmd->xfer = 20; | |
1186 | break; | |
1187 | case LONG_FORM: | |
1188 | cmd->xfer = 32; | |
1189 | break; | |
1190 | case EXTENDED_FORM: | |
1191 | cmd->xfer = buf[8] | (buf[7] << 8); | |
1192 | break; | |
1193 | default: | |
1194 | return -1; | |
1195 | } | |
1196 | ||
06b86357 PB |
1197 | break; |
1198 | case FORMAT_UNIT: | |
1199 | cmd->xfer = buf[4] | (buf[3] << 8); | |
1200 | break; | |
2ec749cb GH |
1201 | /* generic commands */ |
1202 | default: | |
1894df02 | 1203 | return scsi_req_xfer(cmd, dev, buf); |
2ec749cb GH |
1204 | } |
1205 | return 0; | |
1206 | } | |
1207 | ||
1894df02 | 1208 | static int scsi_req_medium_changer_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
40723a99 CH |
1209 | { |
1210 | switch (buf[0]) { | |
1211 | /* medium changer commands */ | |
1212 | case EXCHANGE_MEDIUM: | |
1213 | case INITIALIZE_ELEMENT_STATUS: | |
1214 | case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: | |
1215 | case MOVE_MEDIUM: | |
1216 | case POSITION_TO_ELEMENT: | |
1217 | cmd->xfer = 0; | |
1218 | break; | |
1219 | case READ_ELEMENT_STATUS: | |
1220 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); | |
1221 | break; | |
1222 | ||
1223 | /* generic commands */ | |
1224 | default: | |
1894df02 | 1225 | return scsi_req_xfer(cmd, dev, buf); |
40723a99 CH |
1226 | } |
1227 | return 0; | |
1228 | } | |
1229 | ||
297b044a JL |
1230 | static int scsi_req_scanner_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
1231 | { | |
1232 | switch (buf[0]) { | |
1233 | /* Scanner commands */ | |
1234 | case OBJECT_POSITION: | |
1235 | cmd->xfer = 0; | |
1236 | break; | |
1237 | case SCAN: | |
1238 | cmd->xfer = buf[4]; | |
1239 | break; | |
1240 | case READ_10: | |
1241 | case SEND: | |
1242 | case GET_WINDOW: | |
1243 | case SET_WINDOW: | |
1244 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1245 | break; | |
1246 | default: | |
1247 | /* GET_DATA_BUFFER_STATUS xfer handled by scsi_req_xfer */ | |
1248 | return scsi_req_xfer(cmd, dev, buf); | |
1249 | } | |
1250 | ||
1251 | return 0; | |
1252 | } | |
40723a99 | 1253 | |
2599aece | 1254 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 1255 | { |
a5ee9085 PB |
1256 | if (!cmd->xfer) { |
1257 | cmd->mode = SCSI_XFER_NONE; | |
1258 | return; | |
1259 | } | |
2599aece | 1260 | switch (cmd->buf[0]) { |
97a06435 GH |
1261 | case WRITE_6: |
1262 | case WRITE_10: | |
5e30a07d | 1263 | case WRITE_VERIFY_10: |
97a06435 GH |
1264 | case WRITE_12: |
1265 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1266 | case WRITE_16: |
1267 | case WRITE_VERIFY_16: | |
d12ad44c PB |
1268 | case VERIFY_10: |
1269 | case VERIFY_12: | |
1270 | case VERIFY_16: | |
97a06435 GH |
1271 | case COPY: |
1272 | case COPY_VERIFY: | |
1273 | case COMPARE: | |
1274 | case CHANGE_DEFINITION: | |
1275 | case LOG_SELECT: | |
1276 | case MODE_SELECT: | |
1277 | case MODE_SELECT_10: | |
1278 | case SEND_DIAGNOSTIC: | |
1279 | case WRITE_BUFFER: | |
1280 | case FORMAT_UNIT: | |
1281 | case REASSIGN_BLOCKS: | |
97a06435 GH |
1282 | case SEARCH_EQUAL: |
1283 | case SEARCH_HIGH: | |
1284 | case SEARCH_LOW: | |
1285 | case UPDATE_BLOCK: | |
5e30a07d HR |
1286 | case WRITE_LONG_10: |
1287 | case WRITE_SAME_10: | |
a5ee9085 | 1288 | case WRITE_SAME_16: |
381b634c | 1289 | case UNMAP: |
97a06435 GH |
1290 | case SEARCH_HIGH_12: |
1291 | case SEARCH_EQUAL_12: | |
1292 | case SEARCH_LOW_12: | |
97a06435 GH |
1293 | case MEDIUM_SCAN: |
1294 | case SEND_VOLUME_TAG: | |
06b86357 PB |
1295 | case SEND_CUE_SHEET: |
1296 | case SEND_DVD_STRUCTURE: | |
01bedeba | 1297 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 1298 | case MAINTENANCE_OUT: |
297b044a JL |
1299 | case SET_WINDOW: |
1300 | case SCAN: | |
1301 | /* SCAN conflicts with START_STOP. START_STOP has cmd->xfer set to 0 for | |
1302 | * non-scanner devices, so we only get here for SCAN and not for START_STOP. | |
1303 | */ | |
2599aece | 1304 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 | 1305 | break; |
e4b65262 CM |
1306 | case ATA_PASSTHROUGH_12: |
1307 | case ATA_PASSTHROUGH_16: | |
1308 | /* T_DIR */ | |
1309 | cmd->mode = (cmd->buf[2] & 0x8) ? | |
1310 | SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV; | |
1311 | break; | |
97a06435 | 1312 | default: |
a5ee9085 | 1313 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
1314 | break; |
1315 | } | |
1316 | } | |
1317 | ||
fe9d8927 JM |
1318 | int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, |
1319 | size_t buf_len) | |
1894df02 HR |
1320 | { |
1321 | int rc; | |
c170aad8 | 1322 | int len; |
1894df02 HR |
1323 | |
1324 | cmd->lba = -1; | |
c170aad8 | 1325 | len = scsi_cdb_length(buf); |
6d1511ce | 1326 | if (len < 0 || len > buf_len) { |
c170aad8 PB |
1327 | return -1; |
1328 | } | |
28b70c9d | 1329 | |
c170aad8 | 1330 | cmd->len = len; |
40723a99 CH |
1331 | switch (dev->type) { |
1332 | case TYPE_TAPE: | |
1894df02 | 1333 | rc = scsi_req_stream_xfer(cmd, dev, buf); |
40723a99 CH |
1334 | break; |
1335 | case TYPE_MEDIUM_CHANGER: | |
1894df02 | 1336 | rc = scsi_req_medium_changer_xfer(cmd, dev, buf); |
40723a99 | 1337 | break; |
297b044a JL |
1338 | case TYPE_SCANNER: |
1339 | rc = scsi_req_scanner_length(cmd, dev, buf); | |
1340 | break; | |
40723a99 | 1341 | default: |
1894df02 | 1342 | rc = scsi_req_xfer(cmd, dev, buf); |
40723a99 | 1343 | break; |
2ec749cb | 1344 | } |
40723a99 | 1345 | |
2ec749cb GH |
1346 | if (rc != 0) |
1347 | return rc; | |
1348 | ||
afa46c46 PB |
1349 | memcpy(cmd->buf, buf, cmd->len); |
1350 | scsi_cmd_xfer_mode(cmd); | |
1351 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1352 | return 0; |
1353 | } | |
ed3a34a3 | 1354 | |
53200fad PB |
1355 | void scsi_device_report_change(SCSIDevice *dev, SCSISense sense) |
1356 | { | |
1357 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1358 | ||
1359 | scsi_device_set_ua(dev, sense); | |
1360 | if (bus->info->change) { | |
1361 | bus->info->change(bus, dev, sense); | |
1362 | } | |
1363 | } | |
1364 | ||
ad2d30f7 PB |
1365 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1366 | { | |
8e86b93c | 1367 | assert(req->refcount > 0); |
ad2d30f7 PB |
1368 | req->refcount++; |
1369 | return req; | |
1370 | } | |
1371 | ||
1372 | void scsi_req_unref(SCSIRequest *req) | |
1373 | { | |
68bd348a | 1374 | assert(req->refcount > 0); |
ad2d30f7 | 1375 | if (--req->refcount == 0) { |
cac3c384 PB |
1376 | BusState *qbus = req->dev->qdev.parent_bus; |
1377 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus); | |
1378 | ||
8e86b93c PB |
1379 | if (bus->info->free_request && req->hba_private) { |
1380 | bus->info->free_request(bus, req->hba_private); | |
1381 | } | |
12010e7b PB |
1382 | if (req->ops->free_req) { |
1383 | req->ops->free_req(req); | |
ad2d30f7 | 1384 | } |
cac3c384 PB |
1385 | object_unref(OBJECT(req->dev)); |
1386 | object_unref(OBJECT(qbus->parent)); | |
633dccb4 | 1387 | g_free(req); |
ad2d30f7 PB |
1388 | } |
1389 | } | |
1390 | ||
ad3376cc PB |
1391 | /* Tell the device that we finished processing this chunk of I/O. It |
1392 | will start the next chunk or complete the command. */ | |
1393 | void scsi_req_continue(SCSIRequest *req) | |
1394 | { | |
6f6710aa PB |
1395 | if (req->io_canceled) { |
1396 | trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); | |
1397 | return; | |
1398 | } | |
ad3376cc PB |
1399 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
1400 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1401 | req->ops->write_data(req); |
ad3376cc | 1402 | } else { |
12010e7b | 1403 | req->ops->read_data(req); |
ad3376cc PB |
1404 | } |
1405 | } | |
1406 | ||
ab9adc88 PB |
1407 | /* Called by the devices when data is ready for the HBA. The HBA should |
1408 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1409 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1410 | void scsi_req_data(SCSIRequest *req, int len) |
1411 | { | |
3d5aba97 | 1412 | uint8_t *buf; |
e88c591d PB |
1413 | if (req->io_canceled) { |
1414 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1415 | return; |
e88c591d | 1416 | } |
01e95455 PB |
1417 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1418 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 | 1419 | if (!req->sg) { |
5f412602 | 1420 | req->residual -= len; |
3d5aba97 PB |
1421 | req->bus->info->transfer_data(req, len); |
1422 | return; | |
1423 | } | |
1424 | ||
1425 | /* If the device calls scsi_req_data and the HBA specified a | |
1426 | * scatter/gather list, the transfer has to happen in a single | |
1427 | * step. */ | |
1428 | assert(!req->dma_started); | |
1429 | req->dma_started = true; | |
1430 | ||
1431 | buf = scsi_req_get_buf(req); | |
1432 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
f02b664a PMD |
1433 | dma_buf_read(buf, len, &req->residual, req->sg, |
1434 | MEMTXATTRS_UNSPECIFIED); | |
3d5aba97 | 1435 | } else { |
f02b664a PMD |
1436 | dma_buf_write(buf, len, &req->residual, req->sg, |
1437 | MEMTXATTRS_UNSPECIFIED); | |
3d5aba97 PB |
1438 | } |
1439 | scsi_req_continue(req); | |
ab9adc88 PB |
1440 | } |
1441 | ||
ec766865 GH |
1442 | void scsi_req_print(SCSIRequest *req) |
1443 | { | |
1444 | FILE *fp = stderr; | |
1445 | int i; | |
1446 | ||
1447 | fprintf(fp, "[%s id=%d] %s", | |
1448 | req->dev->qdev.parent_bus->name, | |
1449 | req->dev->id, | |
1450 | scsi_command_name(req->cmd.buf[0])); | |
1451 | for (i = 1; i < req->cmd.len; i++) { | |
1452 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1453 | } | |
1454 | switch (req->cmd.mode) { | |
1455 | case SCSI_XFER_NONE: | |
1456 | fprintf(fp, " - none\n"); | |
1457 | break; | |
1458 | case SCSI_XFER_FROM_DEV: | |
1459 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1460 | break; | |
1461 | case SCSI_XFER_TO_DEV: | |
1462 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1463 | break; | |
1464 | default: | |
1465 | fprintf(fp, " - Oops\n"); | |
1466 | break; | |
1467 | } | |
1468 | } | |
1469 | ||
f3126d65 HR |
1470 | void scsi_req_complete_failed(SCSIRequest *req, int host_status) |
1471 | { | |
1472 | SCSISense sense; | |
1473 | int status; | |
1474 | ||
1475 | assert(req->status == -1 && req->host_status == -1); | |
1476 | assert(req->ops != &reqops_unit_attention); | |
1477 | ||
1478 | if (!req->bus->info->fail) { | |
1479 | status = scsi_sense_from_host_status(req->host_status, &sense); | |
1480 | if (status == CHECK_CONDITION) { | |
1481 | scsi_req_build_sense(req, sense); | |
1482 | } | |
1483 | scsi_req_complete(req, status); | |
1484 | return; | |
1485 | } | |
1486 | ||
1487 | req->host_status = host_status; | |
1488 | scsi_req_ref(req); | |
1489 | scsi_req_dequeue(req); | |
1490 | req->bus->info->fail(req); | |
1491 | ||
1492 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1493 | notifier_list_notify(&req->cancel_notifiers, req); | |
1494 | scsi_req_unref(req); | |
1495 | } | |
1496 | ||
682a9b21 | 1497 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1498 | { |
f3126d65 | 1499 | assert(req->status == -1 && req->host_status == -1); |
682a9b21 | 1500 | req->status = status; |
f3126d65 | 1501 | req->host_status = SCSI_HOST_OK; |
b45ef674 | 1502 | |
335f560f | 1503 | assert(req->sense_len <= sizeof(req->sense)); |
b45ef674 PB |
1504 | if (status == GOOD) { |
1505 | req->sense_len = 0; | |
1506 | } | |
1507 | ||
1508 | if (req->sense_len) { | |
1509 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1510 | req->dev->sense_len = req->sense_len; |
1511 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1512 | } else { | |
1513 | req->dev->sense_len = 0; | |
1514 | req->dev->sense_is_ua = false; | |
b45ef674 | 1515 | } |
b45ef674 | 1516 | |
6dc06f08 PB |
1517 | /* |
1518 | * Unit attention state is now stored in the device's sense buffer | |
1519 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1520 | * flags. | |
1521 | */ | |
1522 | scsi_clear_unit_attention(req); | |
1523 | ||
ad2d30f7 | 1524 | scsi_req_ref(req); |
e8637c90 | 1525 | scsi_req_dequeue(req); |
5f412602 | 1526 | req->bus->info->complete(req, req->residual); |
8e0a9320 FZ |
1527 | |
1528 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1529 | notifier_list_notify(&req->cancel_notifiers, req); | |
ad2d30f7 | 1530 | scsi_req_unref(req); |
ed3a34a3 | 1531 | } |
db07c0f8 | 1532 | |
d5776465 FZ |
1533 | /* Called by the devices when the request is canceled. */ |
1534 | void scsi_req_cancel_complete(SCSIRequest *req) | |
1535 | { | |
1536 | assert(req->io_canceled); | |
1537 | if (req->bus->info->cancel) { | |
1538 | req->bus->info->cancel(req); | |
1539 | } | |
8e0a9320 | 1540 | notifier_list_notify(&req->cancel_notifiers, req); |
d5776465 FZ |
1541 | scsi_req_unref(req); |
1542 | } | |
1543 | ||
8e0a9320 FZ |
1544 | /* Cancel @req asynchronously. @notifier is added to @req's cancellation |
1545 | * notifier list, the bus will be notified the requests cancellation is | |
1546 | * completed. | |
1547 | * */ | |
1548 | void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier) | |
1549 | { | |
1550 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); | |
1551 | if (notifier) { | |
1552 | notifier_list_add(&req->cancel_notifiers, notifier); | |
1553 | } | |
3daa4107 PB |
1554 | if (req->io_canceled) { |
1555 | /* A blk_aio_cancel_async is pending; when it finishes, | |
1556 | * scsi_req_cancel_complete will be called and will | |
1557 | * call the notifier we just added. Just wait for that. | |
1558 | */ | |
1559 | assert(req->aiocb); | |
1560 | return; | |
1561 | } | |
1562 | /* Dropped in scsi_req_cancel_complete. */ | |
8e0a9320 FZ |
1563 | scsi_req_ref(req); |
1564 | scsi_req_dequeue(req); | |
1565 | req->io_canceled = true; | |
1566 | if (req->aiocb) { | |
4be74634 | 1567 | blk_aio_cancel_async(req->aiocb); |
2aeba9d8 FZ |
1568 | } else { |
1569 | scsi_req_cancel_complete(req); | |
8e0a9320 FZ |
1570 | } |
1571 | } | |
1572 | ||
94d3f98a PB |
1573 | void scsi_req_cancel(SCSIRequest *req) |
1574 | { | |
814589c4 | 1575 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); |
e88c591d PB |
1576 | if (!req->enqueued) { |
1577 | return; | |
94d3f98a | 1578 | } |
3daa4107 PB |
1579 | assert(!req->io_canceled); |
1580 | /* Dropped in scsi_req_cancel_complete. */ | |
94d3f98a PB |
1581 | scsi_req_ref(req); |
1582 | scsi_req_dequeue(req); | |
e88c591d | 1583 | req->io_canceled = true; |
a83cfd12 | 1584 | if (req->aiocb) { |
4be74634 | 1585 | blk_aio_cancel(req->aiocb); |
488eef2f PB |
1586 | } else { |
1587 | scsi_req_cancel_complete(req); | |
e88c591d | 1588 | } |
94d3f98a PB |
1589 | } |
1590 | ||
e48e84ea PB |
1591 | static int scsi_ua_precedence(SCSISense sense) |
1592 | { | |
1593 | if (sense.key != UNIT_ATTENTION) { | |
1594 | return INT_MAX; | |
1595 | } | |
1596 | if (sense.asc == 0x29 && sense.ascq == 0x04) { | |
1597 | /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */ | |
1598 | return 1; | |
1599 | } else if (sense.asc == 0x3F && sense.ascq == 0x01) { | |
1600 | /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */ | |
1601 | return 2; | |
1602 | } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) { | |
1603 | /* These two go with "all others". */ | |
1604 | ; | |
1605 | } else if (sense.asc == 0x29 && sense.ascq <= 0x07) { | |
1606 | /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0 | |
1607 | * POWER ON OCCURRED = 1 | |
1608 | * SCSI BUS RESET OCCURRED = 2 | |
1609 | * BUS DEVICE RESET FUNCTION OCCURRED = 3 | |
1610 | * I_T NEXUS LOSS OCCURRED = 7 | |
1611 | */ | |
1612 | return sense.ascq; | |
1613 | } else if (sense.asc == 0x2F && sense.ascq == 0x01) { | |
1614 | /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */ | |
1615 | return 8; | |
1616 | } | |
1617 | return (sense.asc << 8) | sense.ascq; | |
1618 | } | |
1619 | ||
8cc5583a VB |
1620 | void scsi_bus_set_ua(SCSIBus *bus, SCSISense sense) |
1621 | { | |
1622 | int prec1, prec2; | |
1623 | if (sense.key != UNIT_ATTENTION) { | |
1624 | return; | |
1625 | } | |
1626 | ||
1627 | /* | |
1628 | * Override a pre-existing unit attention condition, except for a more | |
1629 | * important reset condition. | |
1630 | */ | |
1631 | prec1 = scsi_ua_precedence(bus->unit_attention); | |
1632 | prec2 = scsi_ua_precedence(sense); | |
1633 | if (prec2 < prec1) { | |
1634 | bus->unit_attention = sense; | |
1635 | } | |
1636 | } | |
1637 | ||
e48e84ea PB |
1638 | void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense) |
1639 | { | |
1640 | int prec1, prec2; | |
1641 | if (sense.key != UNIT_ATTENTION) { | |
1642 | return; | |
1643 | } | |
1644 | trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key, | |
1645 | sense.asc, sense.ascq); | |
1646 | ||
1647 | /* | |
1648 | * Override a pre-existing unit attention condition, except for a more | |
1649 | * important reset condition. | |
1650 | */ | |
1651 | prec1 = scsi_ua_precedence(sdev->unit_attention); | |
1652 | prec2 = scsi_ua_precedence(sense); | |
1653 | if (prec2 < prec1) { | |
1654 | sdev->unit_attention = sense; | |
1655 | } | |
1656 | } | |
1657 | ||
c7b48872 | 1658 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1659 | { |
1660 | SCSIRequest *req; | |
1661 | ||
8aad35f6 | 1662 | aio_context_acquire(blk_get_aio_context(sdev->conf.blk)); |
c557e889 PB |
1663 | while (!QTAILQ_EMPTY(&sdev->requests)) { |
1664 | req = QTAILQ_FIRST(&sdev->requests); | |
8aad35f6 | 1665 | scsi_req_cancel_async(req, NULL); |
c557e889 | 1666 | } |
8aad35f6 PB |
1667 | blk_drain(sdev->conf.blk); |
1668 | aio_context_release(blk_get_aio_context(sdev->conf.blk)); | |
e48e84ea | 1669 | scsi_device_set_ua(sdev, sense); |
c557e889 PB |
1670 | } |
1671 | ||
766aa2de SH |
1672 | void scsi_device_drained_begin(SCSIDevice *sdev) |
1673 | { | |
1674 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, sdev->qdev.parent_bus); | |
1675 | if (!bus) { | |
1676 | return; | |
1677 | } | |
1678 | ||
1679 | assert(qemu_get_current_aio_context() == qemu_get_aio_context()); | |
1680 | assert(bus->drain_count < INT_MAX); | |
1681 | ||
1682 | /* | |
1683 | * Multiple BlockBackends can be on a SCSIBus and each may begin/end | |
1684 | * draining at any time. Keep a counter so HBAs only see begin/end once. | |
1685 | */ | |
1686 | if (bus->drain_count++ == 0) { | |
1687 | trace_scsi_bus_drained_begin(bus, sdev); | |
1688 | if (bus->info->drained_begin) { | |
1689 | bus->info->drained_begin(bus); | |
1690 | } | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | void scsi_device_drained_end(SCSIDevice *sdev) | |
1695 | { | |
1696 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, sdev->qdev.parent_bus); | |
1697 | if (!bus) { | |
1698 | return; | |
1699 | } | |
1700 | ||
1701 | assert(qemu_get_current_aio_context() == qemu_get_aio_context()); | |
1702 | assert(bus->drain_count > 0); | |
1703 | ||
1704 | if (bus->drain_count-- == 1) { | |
1705 | trace_scsi_bus_drained_end(bus, sdev); | |
1706 | if (bus->info->drained_end) { | |
1707 | bus->info->drained_end(bus); | |
1708 | } | |
1709 | } | |
1710 | } | |
1711 | ||
baa1bd89 PB |
1712 | static char *scsibus_get_dev_path(DeviceState *dev) |
1713 | { | |
e1dc6815 | 1714 | SCSIDevice *d = SCSI_DEVICE(dev); |
baa1bd89 | 1715 | DeviceState *hba = dev->parent_bus->parent; |
09e5ab63 | 1716 | char *id; |
b7c8c35f | 1717 | char *path; |
baa1bd89 | 1718 | |
09e5ab63 | 1719 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1720 | if (id) { |
b7c8c35f | 1721 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1722 | } else { |
b7c8c35f | 1723 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1724 | } |
b7c8c35f PB |
1725 | g_free(id); |
1726 | return path; | |
baa1bd89 PB |
1727 | } |
1728 | ||
db07c0f8 GN |
1729 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1730 | { | |
b9eea3e6 | 1731 | SCSIDevice *d = SCSI_DEVICE(dev); |
a5cf8262 JM |
1732 | return g_strdup_printf("channel@%x/%s@%x,%x", d->channel, |
1733 | qdev_fw_name(dev), d->id, d->lun); | |
f48a7a6e PB |
1734 | } |
1735 | ||
63f740dd PB |
1736 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1737 | ||
2c21ee76 | 1738 | static int put_scsi_requests(QEMUFile *f, void *pv, size_t size, |
3ddba9a9 | 1739 | const VMStateField *field, JSONWriter *vmdesc) |
63f740dd PB |
1740 | { |
1741 | SCSIDevice *s = pv; | |
1742 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1743 | SCSIRequest *req; | |
1744 | ||
1745 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1746 | assert(!req->io_canceled); | |
f3126d65 | 1747 | assert(req->status == -1 && req->host_status == -1); |
63f740dd PB |
1748 | assert(req->enqueued); |
1749 | ||
18eef3bc | 1750 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
1751 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
1752 | qemu_put_be32s(f, &req->tag); | |
1753 | qemu_put_be32s(f, &req->lun); | |
1754 | if (bus->info->save_request) { | |
1755 | bus->info->save_request(f, req); | |
1756 | } | |
1757 | if (req->ops->save_request) { | |
1758 | req->ops->save_request(f, req); | |
1759 | } | |
1760 | } | |
1761 | qemu_put_sbyte(f, 0); | |
2c21ee76 JD |
1762 | |
1763 | return 0; | |
63f740dd PB |
1764 | } |
1765 | ||
2c21ee76 | 1766 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size, |
03fee66f | 1767 | const VMStateField *field) |
63f740dd PB |
1768 | { |
1769 | SCSIDevice *s = pv; | |
1770 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 1771 | int8_t sbyte; |
63f740dd | 1772 | |
18eef3bc | 1773 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
1774 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
1775 | uint32_t tag; | |
1776 | uint32_t lun; | |
1777 | SCSIRequest *req; | |
1778 | ||
1779 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1780 | qemu_get_be32s(f, &tag); | |
1781 | qemu_get_be32s(f, &lun); | |
fe9d8927 JM |
1782 | /* |
1783 | * A too-short CDB would have been rejected by scsi_req_new, so just use | |
1784 | * SCSI_CMD_BUF_SIZE as the CDB length. | |
1785 | */ | |
1786 | req = scsi_req_new(s, tag, lun, buf, sizeof(buf), NULL); | |
18eef3bc | 1787 | req->retry = (sbyte == 1); |
63f740dd PB |
1788 | if (bus->info->load_request) { |
1789 | req->hba_private = bus->info->load_request(f, req); | |
1790 | } | |
1791 | if (req->ops->load_request) { | |
1792 | req->ops->load_request(f, req); | |
1793 | } | |
1794 | ||
1795 | /* Just restart it later. */ | |
63f740dd PB |
1796 | scsi_req_enqueue_internal(req); |
1797 | ||
1798 | /* At this point, the request will be kept alive by the reference | |
1799 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1800 | * The HBA of course will add its own reference in the load_request | |
1801 | * callback if it needs to hold on the SCSIRequest. | |
1802 | */ | |
1803 | scsi_req_unref(req); | |
1804 | } | |
1805 | ||
1806 | return 0; | |
1807 | } | |
1808 | ||
12badfc2 | 1809 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
1810 | .name = "scsi-requests", |
1811 | .get = get_scsi_requests, | |
1812 | .put = put_scsi_requests, | |
1813 | }; | |
1814 | ||
2e323f03 FZ |
1815 | static bool scsi_sense_state_needed(void *opaque) |
1816 | { | |
1817 | SCSIDevice *s = opaque; | |
1818 | ||
1819 | return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD; | |
1820 | } | |
1821 | ||
1822 | static const VMStateDescription vmstate_scsi_sense_state = { | |
1823 | .name = "SCSIDevice/sense", | |
1824 | .version_id = 1, | |
1825 | .minimum_version_id = 1, | |
5cd8cada | 1826 | .needed = scsi_sense_state_needed, |
d49805ae | 1827 | .fields = (VMStateField[]) { |
2e323f03 FZ |
1828 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, |
1829 | SCSI_SENSE_BUF_SIZE_OLD, | |
1830 | SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD), | |
1831 | VMSTATE_END_OF_LIST() | |
1832 | } | |
1833 | }; | |
1834 | ||
63f740dd PB |
1835 | const VMStateDescription vmstate_scsi_device = { |
1836 | .name = "SCSIDevice", | |
1837 | .version_id = 1, | |
1838 | .minimum_version_id = 1, | |
63f740dd PB |
1839 | .fields = (VMStateField[]) { |
1840 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1841 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1842 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1843 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
2e323f03 | 1844 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD), |
63f740dd PB |
1845 | VMSTATE_UINT32(sense_len, SCSIDevice), |
1846 | { | |
1847 | .name = "requests", | |
1848 | .version_id = 0, | |
1849 | .field_exists = NULL, | |
1850 | .size = 0, /* ouch */ | |
1851 | .info = &vmstate_info_scsi_requests, | |
1852 | .flags = VMS_SINGLE, | |
1853 | .offset = 0, | |
1854 | }, | |
1855 | VMSTATE_END_OF_LIST() | |
2e323f03 | 1856 | }, |
5cd8cada JQ |
1857 | .subsections = (const VMStateDescription*[]) { |
1858 | &vmstate_scsi_sense_state, | |
1859 | NULL | |
63f740dd PB |
1860 | } |
1861 | }; | |
1862 | ||
42a90a89 PB |
1863 | static Property scsi_props[] = { |
1864 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), | |
1865 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
1866 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), | |
1867 | DEFINE_PROP_END_OF_LIST(), | |
1868 | }; | |
1869 | ||
39bffca2 AL |
1870 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
1871 | { | |
1872 | DeviceClass *k = DEVICE_CLASS(klass); | |
125ee0ed | 1873 | set_bit(DEVICE_CATEGORY_STORAGE, k->categories); |
a818a4b6 FZ |
1874 | k->bus_type = TYPE_SCSI_BUS; |
1875 | k->realize = scsi_qdev_realize; | |
a818a4b6 | 1876 | k->unrealize = scsi_qdev_unrealize; |
4f67d30b | 1877 | device_class_set_props(k, scsi_props); |
39bffca2 AL |
1878 | } |
1879 | ||
44fb6337 GA |
1880 | static void scsi_dev_instance_init(Object *obj) |
1881 | { | |
1882 | DeviceState *dev = DEVICE(obj); | |
e1dc6815 | 1883 | SCSIDevice *s = SCSI_DEVICE(dev); |
44fb6337 GA |
1884 | |
1885 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
1886 | "bootindex", NULL, | |
40c2281c | 1887 | &s->qdev); |
44fb6337 GA |
1888 | } |
1889 | ||
8c43a6f0 | 1890 | static const TypeInfo scsi_device_type_info = { |
b9eea3e6 AL |
1891 | .name = TYPE_SCSI_DEVICE, |
1892 | .parent = TYPE_DEVICE, | |
1893 | .instance_size = sizeof(SCSIDevice), | |
1894 | .abstract = true, | |
1895 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 1896 | .class_init = scsi_device_class_init, |
44fb6337 | 1897 | .instance_init = scsi_dev_instance_init, |
b9eea3e6 AL |
1898 | }; |
1899 | ||
42a90a89 PB |
1900 | static void scsi_bus_class_init(ObjectClass *klass, void *data) |
1901 | { | |
1902 | BusClass *k = BUS_CLASS(klass); | |
1903 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); | |
1904 | ||
1905 | k->get_dev_path = scsibus_get_dev_path; | |
1906 | k->get_fw_dev_path = scsibus_get_fw_dev_path; | |
1907 | k->check_address = scsi_bus_check_address; | |
1908 | hc->unplug = qdev_simple_device_unplug_cb; | |
1909 | } | |
1910 | ||
1911 | static const TypeInfo scsi_bus_info = { | |
1912 | .name = TYPE_SCSI_BUS, | |
1913 | .parent = TYPE_BUS, | |
1914 | .instance_size = sizeof(SCSIBus), | |
1915 | .class_init = scsi_bus_class_init, | |
1916 | .interfaces = (InterfaceInfo[]) { | |
1917 | { TYPE_HOTPLUG_HANDLER }, | |
1918 | { } | |
1919 | } | |
1920 | }; | |
1921 | ||
83f7d43a | 1922 | static void scsi_register_types(void) |
b9eea3e6 | 1923 | { |
0d936928 | 1924 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
1925 | type_register_static(&scsi_device_type_info); |
1926 | } | |
1927 | ||
83f7d43a | 1928 | type_init(scsi_register_types) |