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Commit | Line | Data |
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a4ab4792 | 1 | #include "qemu/osdep.h" |
83c9f4ca | 2 | #include "hw/hw.h" |
da34e65c | 3 | #include "qapi/error.h" |
1de7afc9 | 4 | #include "qemu/error-report.h" |
0d09e41a PB |
5 | #include "hw/scsi/scsi.h" |
6 | #include "block/scsi.h" | |
83c9f4ca | 7 | #include "hw/qdev.h" |
fa1d36df | 8 | #include "sysemu/block-backend.h" |
9c17d615 | 9 | #include "sysemu/blockdev.h" |
5138efec | 10 | #include "trace.h" |
9c17d615 | 11 | #include "sysemu/dma.h" |
f348b6d1 | 12 | #include "qemu/cutils.h" |
d52affa7 | 13 | |
baa1bd89 | 14 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 15 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
71544d30 | 16 | static void scsi_req_dequeue(SCSIRequest *req); |
84642435 AH |
17 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len); |
18 | static void scsi_target_free_buf(SCSIRequest *req); | |
db07c0f8 | 19 | |
3cb75a7c PB |
20 | static Property scsi_props[] = { |
21 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), | |
22 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
23 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), | |
24 | DEFINE_PROP_END_OF_LIST(), | |
25 | }; | |
26 | ||
0d936928 AL |
27 | static void scsi_bus_class_init(ObjectClass *klass, void *data) |
28 | { | |
29 | BusClass *k = BUS_CLASS(klass); | |
bddd763a | 30 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); |
0d936928 AL |
31 | |
32 | k->get_dev_path = scsibus_get_dev_path; | |
33 | k->get_fw_dev_path = scsibus_get_fw_dev_path; | |
bddd763a | 34 | hc->unplug = qdev_simple_device_unplug_cb; |
0d936928 AL |
35 | } |
36 | ||
37 | static const TypeInfo scsi_bus_info = { | |
38 | .name = TYPE_SCSI_BUS, | |
39 | .parent = TYPE_BUS, | |
40 | .instance_size = sizeof(SCSIBus), | |
41 | .class_init = scsi_bus_class_init, | |
bddd763a IM |
42 | .interfaces = (InterfaceInfo[]) { |
43 | { TYPE_HOTPLUG_HANDLER }, | |
44 | { } | |
45 | } | |
d52affa7 GH |
46 | }; |
47 | static int next_scsi_bus; | |
48 | ||
a818a4b6 | 49 | static void scsi_device_realize(SCSIDevice *s, Error **errp) |
b9eea3e6 AL |
50 | { |
51 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
a818a4b6 FZ |
52 | if (sc->realize) { |
53 | sc->realize(s, errp); | |
b9eea3e6 | 54 | } |
b9eea3e6 AL |
55 | } |
56 | ||
ff34c32c PB |
57 | int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, |
58 | void *hba_private) | |
59 | { | |
60 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
61 | int rc; | |
62 | ||
63 | assert(cmd->len == 0); | |
64 | rc = scsi_req_parse_cdb(dev, cmd, buf); | |
65 | if (bus->info->parse_cdb) { | |
66 | rc = bus->info->parse_cdb(dev, cmd, buf, hba_private); | |
67 | } | |
68 | return rc; | |
69 | } | |
70 | ||
b9eea3e6 AL |
71 | static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun, |
72 | uint8_t *buf, void *hba_private) | |
73 | { | |
74 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
75 | if (sc->alloc_req) { | |
76 | return sc->alloc_req(s, tag, lun, buf, hba_private); | |
77 | } | |
78 | ||
79 | return NULL; | |
80 | } | |
81 | ||
8d72db68 | 82 | void scsi_device_unit_attention_reported(SCSIDevice *s) |
b9eea3e6 AL |
83 | { |
84 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
85 | if (sc->unit_attention_reported) { | |
86 | sc->unit_attention_reported(s); | |
87 | } | |
88 | } | |
89 | ||
d52affa7 | 90 | /* Create a scsi bus, and attach devices to it. */ |
b1187b51 AF |
91 | void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host, |
92 | const SCSIBusInfo *info, const char *bus_name) | |
d52affa7 | 93 | { |
fb17dfe0 | 94 | qbus_create_inplace(bus, bus_size, TYPE_SCSI_BUS, host, bus_name); |
d52affa7 | 95 | bus->busnr = next_scsi_bus++; |
afd4030c | 96 | bus->info = info; |
bddd763a | 97 | qbus_set_bus_hotplug_handler(BUS(bus), &error_abort); |
d52affa7 GH |
98 | } |
99 | ||
71544d30 PB |
100 | static void scsi_dma_restart_bh(void *opaque) |
101 | { | |
102 | SCSIDevice *s = opaque; | |
103 | SCSIRequest *req, *next; | |
104 | ||
105 | qemu_bh_delete(s->bh); | |
106 | s->bh = NULL; | |
107 | ||
1919631e | 108 | aio_context_acquire(blk_get_aio_context(s->conf.blk)); |
71544d30 PB |
109 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { |
110 | scsi_req_ref(req); | |
111 | if (req->retry) { | |
112 | req->retry = false; | |
113 | switch (req->cmd.mode) { | |
114 | case SCSI_XFER_FROM_DEV: | |
115 | case SCSI_XFER_TO_DEV: | |
116 | scsi_req_continue(req); | |
117 | break; | |
118 | case SCSI_XFER_NONE: | |
119 | scsi_req_dequeue(req); | |
120 | scsi_req_enqueue(req); | |
121 | break; | |
122 | } | |
123 | } | |
124 | scsi_req_unref(req); | |
125 | } | |
1919631e | 126 | aio_context_release(blk_get_aio_context(s->conf.blk)); |
71544d30 PB |
127 | } |
128 | ||
129 | void scsi_req_retry(SCSIRequest *req) | |
130 | { | |
131 | /* No need to save a reference, because scsi_dma_restart_bh just | |
132 | * looks at the request list. */ | |
133 | req->retry = true; | |
134 | } | |
135 | ||
136 | static void scsi_dma_restart_cb(void *opaque, int running, RunState state) | |
137 | { | |
138 | SCSIDevice *s = opaque; | |
139 | ||
140 | if (!running) { | |
141 | return; | |
142 | } | |
143 | if (!s->bh) { | |
d223c104 PB |
144 | AioContext *ctx = blk_get_aio_context(s->conf.blk); |
145 | s->bh = aio_bh_new(ctx, scsi_dma_restart_bh, s); | |
71544d30 PB |
146 | qemu_bh_schedule(s->bh); |
147 | } | |
148 | } | |
149 | ||
a818a4b6 | 150 | static void scsi_qdev_realize(DeviceState *qdev, Error **errp) |
d52affa7 | 151 | { |
b9eea3e6 | 152 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
d52affa7 | 153 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
7e0380b9 | 154 | SCSIDevice *d; |
a818a4b6 | 155 | Error *local_err = NULL; |
d52affa7 | 156 | |
0d3545e7 | 157 | if (dev->channel > bus->info->max_channel) { |
a818a4b6 FZ |
158 | error_setg(errp, "bad scsi channel id: %d", dev->channel); |
159 | return; | |
0d3545e7 | 160 | } |
7e0380b9 | 161 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
a818a4b6 FZ |
162 | error_setg(errp, "bad scsi device id: %d", dev->id); |
163 | return; | |
d52affa7 | 164 | } |
d3d250bd | 165 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { |
a818a4b6 FZ |
166 | error_setg(errp, "bad scsi device lun: %d", dev->lun); |
167 | return; | |
d3d250bd | 168 | } |
d52affa7 | 169 | |
7e0380b9 PB |
170 | if (dev->id == -1) { |
171 | int id = -1; | |
172 | if (dev->lun == -1) { | |
173 | dev->lun = 0; | |
174 | } | |
175 | do { | |
0d3545e7 | 176 | d = scsi_device_find(bus, dev->channel, ++id, dev->lun); |
d3d250bd PB |
177 | } while (d && d->lun == dev->lun && id < bus->info->max_target); |
178 | if (d && d->lun == dev->lun) { | |
a818a4b6 FZ |
179 | error_setg(errp, "no free target"); |
180 | return; | |
7e0380b9 PB |
181 | } |
182 | dev->id = id; | |
183 | } else if (dev->lun == -1) { | |
184 | int lun = -1; | |
185 | do { | |
0d3545e7 | 186 | d = scsi_device_find(bus, dev->channel, dev->id, ++lun); |
7e0380b9 | 187 | } while (d && d->lun == lun && lun < bus->info->max_lun); |
d3d250bd | 188 | if (d && d->lun == lun) { |
a818a4b6 FZ |
189 | error_setg(errp, "no free lun"); |
190 | return; | |
7e0380b9 PB |
191 | } |
192 | dev->lun = lun; | |
193 | } else { | |
0d3545e7 | 194 | d = scsi_device_find(bus, dev->channel, dev->id, dev->lun); |
d3d250bd PB |
195 | assert(d); |
196 | if (d->lun == dev->lun && dev != d) { | |
a818a4b6 FZ |
197 | error_setg(errp, "lun already used by '%s'", d->qdev.id); |
198 | return; | |
7e0380b9 | 199 | } |
d52affa7 | 200 | } |
d52affa7 | 201 | |
9af99d98 | 202 | QTAILQ_INIT(&dev->requests); |
a818a4b6 FZ |
203 | scsi_device_realize(dev, &local_err); |
204 | if (local_err) { | |
205 | error_propagate(errp, local_err); | |
206 | return; | |
71544d30 | 207 | } |
a818a4b6 FZ |
208 | dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb, |
209 | dev); | |
01985dcf GH |
210 | } |
211 | ||
a818a4b6 | 212 | static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp) |
01985dcf | 213 | { |
b9eea3e6 | 214 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 215 | |
71544d30 PB |
216 | if (dev->vmsentry) { |
217 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
218 | } | |
fb7b5c0d PB |
219 | |
220 | scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE)); | |
221 | blockdev_mark_auto_del(dev->conf.blk); | |
d52affa7 GH |
222 | } |
223 | ||
d52affa7 | 224 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
4be74634 | 225 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, |
76534da7 | 226 | int unit, bool removable, int bootindex, |
caad4eb3 | 227 | const char *serial, Error **errp) |
d52affa7 GH |
228 | { |
229 | const char *driver; | |
22647504 | 230 | char *name; |
d52affa7 | 231 | DeviceState *dev; |
caad4eb3 | 232 | Error *err = NULL; |
d52affa7 | 233 | |
4be74634 | 234 | driver = blk_is_sg(blk) ? "scsi-generic" : "scsi-disk"; |
d52affa7 | 235 | dev = qdev_create(&bus->qbus, driver); |
22647504 PB |
236 | name = g_strdup_printf("legacy[%d]", unit); |
237 | object_property_add_child(OBJECT(bus), name, OBJECT(dev), NULL); | |
238 | g_free(name); | |
239 | ||
d52affa7 | 240 | qdev_prop_set_uint32(dev, "scsi-id", unit); |
ce4e7e46 | 241 | if (bootindex >= 0) { |
8dece34f GA |
242 | object_property_set_int(OBJECT(dev), bootindex, "bootindex", |
243 | &error_abort); | |
ce4e7e46 | 244 | } |
89bfe000 | 245 | if (object_property_find(OBJECT(dev), "removable", NULL)) { |
2d1fd261 SH |
246 | qdev_prop_set_bit(dev, "removable", removable); |
247 | } | |
c24e7517 | 248 | if (serial && object_property_find(OBJECT(dev), "serial", NULL)) { |
76534da7 KW |
249 | qdev_prop_set_string(dev, "serial", serial); |
250 | } | |
9b3d111a MA |
251 | qdev_prop_set_drive(dev, "drive", blk, &err); |
252 | if (err) { | |
390e90a9 | 253 | error_propagate(errp, err); |
02a5c4c9 | 254 | object_unparent(OBJECT(dev)); |
18846dee MA |
255 | return NULL; |
256 | } | |
caad4eb3 AF |
257 | object_property_set_bool(OBJECT(dev), true, "realized", &err); |
258 | if (err != NULL) { | |
259 | error_propagate(errp, err); | |
02a5c4c9 | 260 | object_unparent(OBJECT(dev)); |
33e66b86 | 261 | return NULL; |
caad4eb3 | 262 | } |
b9eea3e6 | 263 | return SCSI_DEVICE(dev); |
d52affa7 GH |
264 | } |
265 | ||
a64aa578 | 266 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, bool deprecated) |
d52affa7 | 267 | { |
42e766a2 | 268 | Location loc; |
d52affa7 | 269 | DriveInfo *dinfo; |
caad4eb3 | 270 | int unit; |
d52affa7 | 271 | |
42e766a2 | 272 | loc_push_none(&loc); |
d3d250bd | 273 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
274 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
275 | if (dinfo == NULL) { | |
276 | continue; | |
277 | } | |
42e766a2 | 278 | qemu_opts_loc_restore(dinfo->opts); |
a64aa578 MA |
279 | if (deprecated) { |
280 | /* Handling -drive not claimed by machine initialization */ | |
281 | if (blk_get_attached_dev(blk_by_legacy_dinfo(dinfo))) { | |
282 | continue; /* claimed */ | |
283 | } | |
284 | if (!dinfo->is_default) { | |
3dc6f869 AF |
285 | warn_report("bus=%d,unit=%d is deprecated with this" |
286 | " machine type", | |
287 | bus->busnr, unit); | |
a64aa578 | 288 | } |
fa66b909 | 289 | } |
4be74634 | 290 | scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo), |
fb8b660e | 291 | unit, false, -1, NULL, &error_fatal); |
d52affa7 | 292 | } |
42e766a2 | 293 | loc_pop(&loc); |
d52affa7 | 294 | } |
89b08ae1 | 295 | |
fb8b660e MA |
296 | static bool is_scsi_hba_with_legacy_magic(Object *obj) |
297 | { | |
298 | static const char *magic[] = { | |
299 | "am53c974", "dc390", "esp", "lsi53c810", "lsi53c895a", | |
300 | "megasas", "megasas-gen2", "mptsas1068", "spapr-vscsi", | |
301 | "virtio-scsi-device", | |
302 | NULL | |
303 | }; | |
304 | const char *typename = object_get_typename(obj); | |
305 | int i; | |
306 | ||
307 | for (i = 0; magic[i]; i++) | |
308 | if (!strcmp(typename, magic[i])) { | |
309 | return true; | |
310 | } | |
311 | ||
312 | return false; | |
313 | } | |
314 | ||
315 | static int scsi_legacy_handle_cmdline_cb(Object *obj, void *opaque) | |
316 | { | |
317 | SCSIBus *bus = (SCSIBus *)object_dynamic_cast(obj, TYPE_SCSI_BUS); | |
318 | ||
319 | if (bus && is_scsi_hba_with_legacy_magic(OBJECT(bus->qbus.parent))) { | |
a64aa578 | 320 | scsi_bus_legacy_handle_cmdline(bus, true); |
fb8b660e MA |
321 | } |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | void scsi_legacy_handle_cmdline(void) | |
327 | { | |
328 | object_child_foreach_recursive(object_get_root(), | |
329 | scsi_legacy_handle_cmdline_cb, NULL); | |
330 | } | |
331 | ||
12a08998 PB |
332 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
333 | { | |
334 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
335 | scsi_req_complete(req, CHECK_CONDITION); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | static const struct SCSIReqOps reqops_invalid_field = { | |
340 | .size = sizeof(SCSIRequest), | |
341 | .send_command = scsi_invalid_field | |
342 | }; | |
343 | ||
afa46c46 PB |
344 | /* SCSIReqOps implementation for invalid commands. */ |
345 | ||
346 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
347 | { | |
348 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
349 | scsi_req_complete(req, CHECK_CONDITION); | |
350 | return 0; | |
351 | } | |
352 | ||
adcf2754 | 353 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
354 | .size = sizeof(SCSIRequest), |
355 | .send_command = scsi_invalid_command | |
356 | }; | |
357 | ||
6dc06f08 PB |
358 | /* SCSIReqOps implementation for unit attention conditions. */ |
359 | ||
360 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
361 | { | |
0bf8264e | 362 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { |
6dc06f08 PB |
363 | scsi_req_build_sense(req, req->dev->unit_attention); |
364 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
365 | scsi_req_build_sense(req, req->bus->unit_attention); | |
366 | } | |
367 | scsi_req_complete(req, CHECK_CONDITION); | |
368 | return 0; | |
369 | } | |
370 | ||
adcf2754 | 371 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
372 | .size = sizeof(SCSIRequest), |
373 | .send_command = scsi_unit_attention | |
374 | }; | |
375 | ||
fdaef069 PB |
376 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
377 | an invalid LUN. */ | |
378 | ||
379 | typedef struct SCSITargetReq SCSITargetReq; | |
380 | ||
381 | struct SCSITargetReq { | |
382 | SCSIRequest req; | |
383 | int len; | |
84642435 AH |
384 | uint8_t *buf; |
385 | int buf_len; | |
fdaef069 PB |
386 | }; |
387 | ||
388 | static void store_lun(uint8_t *outbuf, int lun) | |
389 | { | |
390 | if (lun < 256) { | |
391 | outbuf[1] = lun; | |
392 | return; | |
393 | } | |
394 | outbuf[1] = (lun & 255); | |
395 | outbuf[0] = (lun >> 8) | 0x40; | |
396 | } | |
397 | ||
398 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
399 | { | |
0866aca1 | 400 | BusChild *kid; |
ba74307c | 401 | int i, len, n; |
0d3545e7 | 402 | int channel, id; |
ba74307c PB |
403 | bool found_lun0; |
404 | ||
fdaef069 PB |
405 | if (r->req.cmd.xfer < 16) { |
406 | return false; | |
407 | } | |
408 | if (r->req.cmd.buf[2] > 2) { | |
409 | return false; | |
410 | } | |
0d3545e7 | 411 | channel = r->req.dev->channel; |
ba74307c PB |
412 | id = r->req.dev->id; |
413 | found_lun0 = false; | |
414 | n = 0; | |
0866aca1 AL |
415 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
416 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 417 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 418 | |
0d3545e7 | 419 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
420 | if (dev->lun == 0) { |
421 | found_lun0 = true; | |
422 | } | |
423 | n += 8; | |
424 | } | |
425 | } | |
426 | if (!found_lun0) { | |
427 | n += 8; | |
428 | } | |
ba74307c | 429 | |
84642435 AH |
430 | scsi_target_alloc_buf(&r->req, n + 8); |
431 | ||
432 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
fdaef069 | 433 | memset(r->buf, 0, len); |
84642435 | 434 | stl_be_p(&r->buf[0], n); |
ba74307c | 435 | i = found_lun0 ? 8 : 16; |
0866aca1 AL |
436 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
437 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 438 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 439 | |
0d3545e7 | 440 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
441 | store_lun(&r->buf[i], dev->lun); |
442 | i += 8; | |
443 | } | |
fdaef069 | 444 | } |
ba74307c PB |
445 | assert(i == n + 8); |
446 | r->len = len; | |
fdaef069 PB |
447 | return true; |
448 | } | |
449 | ||
450 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
451 | { | |
452 | assert(r->req.dev->lun != r->req.lun); | |
84642435 AH |
453 | |
454 | scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN); | |
455 | ||
fdaef069 PB |
456 | if (r->req.cmd.buf[1] & 0x2) { |
457 | /* Command support data - optional, not implemented */ | |
458 | return false; | |
459 | } | |
460 | ||
461 | if (r->req.cmd.buf[1] & 0x1) { | |
462 | /* Vital product data */ | |
463 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
464 | r->buf[r->len++] = page_code ; /* this page */ |
465 | r->buf[r->len++] = 0x00; | |
466 | ||
467 | switch (page_code) { | |
468 | case 0x00: /* Supported page codes, mandatory */ | |
469 | { | |
470 | int pages; | |
471 | pages = r->len++; | |
472 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
473 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
474 | break; | |
475 | } | |
476 | default: | |
477 | return false; | |
478 | } | |
479 | /* done with EVPD */ | |
84642435 | 480 | assert(r->len < r->buf_len); |
fdaef069 PB |
481 | r->len = MIN(r->req.cmd.xfer, r->len); |
482 | return true; | |
483 | } | |
484 | ||
485 | /* Standard INQUIRY data */ | |
486 | if (r->req.cmd.buf[2] != 0) { | |
487 | return false; | |
488 | } | |
489 | ||
490 | /* PAGE CODE == 0 */ | |
84642435 | 491 | r->len = MIN(r->req.cmd.xfer, SCSI_INQUIRY_LEN); |
fdaef069 PB |
492 | memset(r->buf, 0, r->len); |
493 | if (r->req.lun != 0) { | |
494 | r->buf[0] = TYPE_NO_LUN; | |
495 | } else { | |
496 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
497 | r->buf[2] = 5; /* Version */ | |
498 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
499 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 500 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
501 | memcpy(&r->buf[8], "QEMU ", 8); |
502 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
35c2c8dc | 503 | pstrcpy((char *) &r->buf[32], 4, qemu_hw_version()); |
fdaef069 PB |
504 | } |
505 | return true; | |
506 | } | |
507 | ||
6959e508 JL |
508 | static size_t scsi_sense_len(SCSIRequest *req) |
509 | { | |
510 | if (req->dev->type == TYPE_SCANNER) | |
511 | return SCSI_SENSE_LEN_SCANNER; | |
512 | else | |
513 | return SCSI_SENSE_LEN; | |
514 | } | |
515 | ||
fdaef069 PB |
516 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) |
517 | { | |
518 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
519 | ||
520 | switch (buf[0]) { | |
521 | case REPORT_LUNS: | |
522 | if (!scsi_target_emulate_report_luns(r)) { | |
523 | goto illegal_request; | |
524 | } | |
525 | break; | |
526 | case INQUIRY: | |
527 | if (!scsi_target_emulate_inquiry(r)) { | |
528 | goto illegal_request; | |
529 | } | |
530 | break; | |
739df215 | 531 | case REQUEST_SENSE: |
6959e508 | 532 | scsi_target_alloc_buf(&r->req, scsi_sense_len(req)); |
8b2a04ee | 533 | r->len = scsi_device_get_sense(r->req.dev, r->buf, |
84642435 | 534 | MIN(req->cmd.xfer, r->buf_len), |
739df215 | 535 | (req->cmd.buf[1] & 1) == 0); |
3653d8c4 | 536 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 537 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
538 | r->req.dev->sense_len = 0; |
539 | r->req.dev->sense_is_ua = false; | |
540 | } | |
739df215 | 541 | break; |
1cb27d92 PB |
542 | case TEST_UNIT_READY: |
543 | break; | |
fdaef069 PB |
544 | default: |
545 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); | |
546 | scsi_req_complete(req, CHECK_CONDITION); | |
547 | return 0; | |
548 | illegal_request: | |
549 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
550 | scsi_req_complete(req, CHECK_CONDITION); | |
551 | return 0; | |
552 | } | |
553 | ||
554 | if (!r->len) { | |
555 | scsi_req_complete(req, GOOD); | |
556 | } | |
557 | return r->len; | |
558 | } | |
559 | ||
560 | static void scsi_target_read_data(SCSIRequest *req) | |
561 | { | |
562 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
563 | uint32_t n; | |
564 | ||
565 | n = r->len; | |
566 | if (n > 0) { | |
567 | r->len = 0; | |
568 | scsi_req_data(&r->req, n); | |
569 | } else { | |
570 | scsi_req_complete(&r->req, GOOD); | |
571 | } | |
572 | } | |
573 | ||
574 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
575 | { | |
576 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
577 | ||
578 | return r->buf; | |
579 | } | |
580 | ||
84642435 AH |
581 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len) |
582 | { | |
583 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
584 | ||
585 | r->buf = g_malloc(len); | |
586 | r->buf_len = len; | |
587 | ||
588 | return r->buf; | |
589 | } | |
590 | ||
591 | static void scsi_target_free_buf(SCSIRequest *req) | |
592 | { | |
593 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
594 | ||
595 | g_free(r->buf); | |
596 | } | |
597 | ||
adcf2754 | 598 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
599 | .size = sizeof(SCSITargetReq), |
600 | .send_command = scsi_target_send_command, | |
601 | .read_data = scsi_target_read_data, | |
602 | .get_buf = scsi_target_get_buf, | |
84642435 | 603 | .free_req = scsi_target_free_buf, |
fdaef069 PB |
604 | }; |
605 | ||
606 | ||
adcf2754 PB |
607 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
608 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
609 | { |
610 | SCSIRequest *req; | |
cac3c384 PB |
611 | SCSIBus *bus = scsi_bus_from_device(d); |
612 | BusState *qbus = BUS(bus); | |
61e68b3f FZ |
613 | const int memset_off = offsetof(SCSIRequest, sense) |
614 | + sizeof(req->sense); | |
89b08ae1 | 615 | |
633dccb4 | 616 | req = g_malloc(reqops->size); |
61e68b3f | 617 | memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off); |
5c6c0e51 | 618 | req->refcount = 1; |
cac3c384 | 619 | req->bus = bus; |
89b08ae1 GH |
620 | req->dev = d; |
621 | req->tag = tag; | |
622 | req->lun = lun; | |
c5bf71a9 | 623 | req->hba_private = hba_private; |
ed3a34a3 | 624 | req->status = -1; |
8dbd4574 | 625 | req->ops = reqops; |
cac3c384 PB |
626 | object_ref(OBJECT(d)); |
627 | object_ref(OBJECT(qbus->parent)); | |
8e0a9320 | 628 | notifier_list_init(&req->cancel_notifiers); |
5138efec | 629 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
630 | return req; |
631 | } | |
632 | ||
c5bf71a9 | 633 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 634 | uint8_t *buf, void *hba_private) |
43a2b339 | 635 | { |
6dc06f08 | 636 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
769998a1 | 637 | const SCSIReqOps *ops; |
ff34c32c | 638 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d); |
c39ce112 | 639 | SCSIRequest *req; |
769998a1 PB |
640 | SCSICommand cmd = { .len = 0 }; |
641 | int ret; | |
642 | ||
643 | if ((d->unit_attention.key == UNIT_ATTENTION || | |
644 | bus->unit_attention.key == UNIT_ATTENTION) && | |
645 | (buf[0] != INQUIRY && | |
646 | buf[0] != REPORT_LUNS && | |
647 | buf[0] != GET_CONFIGURATION && | |
648 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
649 | ||
650 | /* | |
651 | * If we already have a pending unit attention condition, | |
652 | * report this one before triggering another one. | |
653 | */ | |
654 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
655 | ops = &reqops_unit_attention; | |
656 | } else if (lun != d->lun || | |
657 | buf[0] == REPORT_LUNS || | |
658 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
659 | ops = &reqops_target_command; | |
660 | } else { | |
661 | ops = NULL; | |
662 | } | |
afa46c46 | 663 | |
ff34c32c PB |
664 | if (ops != NULL || !sc->parse_cdb) { |
665 | ret = scsi_req_parse_cdb(d, &cmd, buf); | |
666 | } else { | |
667 | ret = sc->parse_cdb(d, &cmd, buf, hba_private); | |
668 | } | |
669 | ||
769998a1 | 670 | if (ret != 0) { |
afa46c46 PB |
671 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); |
672 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
673 | } else { | |
769998a1 | 674 | assert(cmd.len != 0); |
afa46c46 PB |
675 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], |
676 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 677 | if (cmd.lba != -1) { |
afa46c46 PB |
678 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
679 | cmd.lba); | |
680 | } | |
fdaef069 | 681 | |
12a08998 PB |
682 | if (cmd.xfer > INT32_MAX) { |
683 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
769998a1 PB |
684 | } else if (ops) { |
685 | req = scsi_req_alloc(ops, d, tag, lun, hba_private); | |
fdaef069 | 686 | } else { |
b9eea3e6 | 687 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 688 | } |
afa46c46 PB |
689 | } |
690 | ||
691 | req->cmd = cmd; | |
01e95455 PB |
692 | req->resid = req->cmd.xfer; |
693 | ||
98254542 PB |
694 | switch (buf[0]) { |
695 | case INQUIRY: | |
696 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
697 | break; | |
698 | case TEST_UNIT_READY: | |
699 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
700 | break; | |
701 | case REPORT_LUNS: | |
702 | trace_scsi_report_luns(d->id, lun, tag); | |
703 | break; | |
704 | case REQUEST_SENSE: | |
705 | trace_scsi_request_sense(d->id, lun, tag); | |
706 | break; | |
707 | default: | |
708 | break; | |
709 | } | |
710 | ||
c39ce112 | 711 | return req; |
43a2b339 PB |
712 | } |
713 | ||
0c34459b PB |
714 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
715 | { | |
12010e7b | 716 | return req->ops->get_buf(req); |
0c34459b PB |
717 | } |
718 | ||
6dc06f08 PB |
719 | static void scsi_clear_unit_attention(SCSIRequest *req) |
720 | { | |
721 | SCSISense *ua; | |
722 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
723 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
724 | return; | |
725 | } | |
726 | ||
727 | /* | |
728 | * If an INQUIRY command enters the enabled command state, | |
729 | * the device server shall [not] clear any unit attention condition; | |
730 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
731 | */ | |
732 | if (req->cmd.buf[0] == INQUIRY || | |
733 | req->cmd.buf[0] == GET_CONFIGURATION || | |
734 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
735 | return; | |
736 | } | |
737 | ||
738 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
739 | ua = &req->dev->unit_attention; | |
740 | } else { | |
741 | ua = &req->bus->unit_attention; | |
742 | } | |
743 | ||
744 | /* | |
745 | * If a REPORT LUNS command enters the enabled command state, [...] | |
746 | * the device server shall clear any pending unit attention condition | |
747 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
748 | */ | |
749 | if (req->cmd.buf[0] == REPORT_LUNS && | |
750 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
751 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
752 | return; | |
753 | } | |
754 | ||
755 | *ua = SENSE_CODE(NO_SENSE); | |
756 | } | |
757 | ||
74382217 HR |
758 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
759 | { | |
6dc06f08 PB |
760 | int ret; |
761 | ||
b45ef674 PB |
762 | assert(len >= 14); |
763 | if (!req->sense_len) { | |
74382217 HR |
764 | return 0; |
765 | } | |
6dc06f08 PB |
766 | |
767 | ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true); | |
768 | ||
769 | /* | |
770 | * FIXME: clearing unit attention conditions upon autosense should be done | |
771 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
772 | * (SAM-5, 5.14). | |
773 | * | |
774 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
775 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 776 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 777 | */ |
3653d8c4 | 778 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 779 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
780 | req->dev->sense_len = 0; |
781 | req->dev->sense_is_ua = false; | |
782 | } | |
6dc06f08 | 783 | return ret; |
b45ef674 PB |
784 | } |
785 | ||
786 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
787 | { | |
788 | return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed); | |
789 | } | |
790 | ||
791 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
792 | { | |
793 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
794 | sense.key, sense.asc, sense.ascq); | |
795 | memset(req->sense, 0, 18); | |
77e4743c | 796 | req->sense[0] = 0x70; |
b45ef674 | 797 | req->sense[2] = sense.key; |
eae31cb9 | 798 | req->sense[7] = 10; |
b45ef674 PB |
799 | req->sense[12] = sense.asc; |
800 | req->sense[13] = sense.ascq; | |
801 | req->sense_len = 18; | |
74382217 HR |
802 | } |
803 | ||
63f740dd | 804 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 805 | { |
5c6c0e51 HR |
806 | assert(!req->enqueued); |
807 | scsi_req_ref(req); | |
3d5aba97 PB |
808 | if (req->bus->info->get_sg_list) { |
809 | req->sg = req->bus->info->get_sg_list(req); | |
810 | } else { | |
811 | req->sg = NULL; | |
812 | } | |
5c6c0e51 HR |
813 | req->enqueued = true; |
814 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 815 | } |
fc4f0754 | 816 | |
63f740dd PB |
817 | int32_t scsi_req_enqueue(SCSIRequest *req) |
818 | { | |
819 | int32_t rc; | |
820 | ||
821 | assert(!req->retry); | |
822 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 823 | scsi_req_ref(req); |
c39ce112 | 824 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
825 | scsi_req_unref(req); |
826 | return rc; | |
89b08ae1 GH |
827 | } |
828 | ||
a1f0cce2 | 829 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 830 | { |
5138efec | 831 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 832 | req->retry = false; |
e8637c90 JK |
833 | if (req->enqueued) { |
834 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
835 | req->enqueued = false; | |
ad2d30f7 | 836 | scsi_req_unref(req); |
e8637c90 JK |
837 | } |
838 | } | |
839 | ||
06b86357 PB |
840 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
841 | { | |
842 | /* MMC-6, paragraph 6.7. */ | |
843 | switch (type) { | |
844 | case 0: | |
845 | if ((data_type & 3) == 0) { | |
846 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
847 | return 16 * num_desc + 8; | |
848 | } else { | |
849 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
850 | return 6 * num_desc + 8; | |
851 | } | |
852 | case 1: | |
853 | case 4: | |
854 | case 5: | |
855 | return 8 * num_desc + 8; | |
856 | case 2: | |
857 | return 2048 * num_desc + 8; | |
858 | case 3: | |
859 | return 16 * num_desc + 8; | |
860 | default: | |
861 | return 8; | |
862 | } | |
863 | } | |
864 | ||
e4b65262 CM |
865 | static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf) |
866 | { | |
867 | int byte_block = (buf[2] >> 2) & 0x1; | |
868 | int type = (buf[2] >> 4) & 0x1; | |
869 | int xfer_unit; | |
870 | ||
871 | if (byte_block) { | |
872 | if (type) { | |
873 | xfer_unit = dev->blocksize; | |
874 | } else { | |
875 | xfer_unit = 512; | |
876 | } | |
877 | } else { | |
878 | xfer_unit = 1; | |
879 | } | |
880 | ||
881 | return xfer_unit; | |
882 | } | |
883 | ||
1894df02 | 884 | static int ata_passthrough_12_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
885 | { |
886 | int length = buf[2] & 0x3; | |
887 | int xfer; | |
888 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
889 | ||
890 | switch (length) { | |
891 | case 0: | |
892 | case 3: /* USB-specific. */ | |
d83c951c | 893 | default: |
e4b65262 CM |
894 | xfer = 0; |
895 | break; | |
896 | case 1: | |
897 | xfer = buf[3]; | |
898 | break; | |
899 | case 2: | |
900 | xfer = buf[4]; | |
901 | break; | |
902 | } | |
903 | ||
904 | return xfer * unit; | |
905 | } | |
906 | ||
1894df02 | 907 | static int ata_passthrough_16_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
908 | { |
909 | int extend = buf[1] & 0x1; | |
910 | int length = buf[2] & 0x3; | |
911 | int xfer; | |
912 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
913 | ||
914 | switch (length) { | |
915 | case 0: | |
916 | case 3: /* USB-specific. */ | |
d83c951c | 917 | default: |
e4b65262 CM |
918 | xfer = 0; |
919 | break; | |
920 | case 1: | |
921 | xfer = buf[4]; | |
922 | xfer |= (extend ? buf[3] << 8 : 0); | |
923 | break; | |
924 | case 2: | |
925 | xfer = buf[6]; | |
926 | xfer |= (extend ? buf[5] << 8 : 0); | |
927 | break; | |
928 | } | |
929 | ||
930 | return xfer * unit; | |
931 | } | |
932 | ||
1894df02 | 933 | uint32_t scsi_data_cdb_xfer(uint8_t *buf) |
bb729f75 PB |
934 | { |
935 | if ((buf[0] >> 5) == 0 && buf[4] == 0) { | |
936 | return 256; | |
937 | } else { | |
1894df02 | 938 | return scsi_cdb_xfer(buf); |
bb729f75 PB |
939 | } |
940 | } | |
941 | ||
1894df02 | 942 | uint32_t scsi_cdb_xfer(uint8_t *buf) |
2ec749cb | 943 | { |
2599aece | 944 | switch (buf[0] >> 5) { |
2ec749cb | 945 | case 0: |
bb729f75 | 946 | return buf[4]; |
2ec749cb GH |
947 | break; |
948 | case 1: | |
949 | case 2: | |
bb729f75 | 950 | return lduw_be_p(&buf[7]); |
2ec749cb GH |
951 | break; |
952 | case 4: | |
bb729f75 | 953 | return ldl_be_p(&buf[10]) & 0xffffffffULL; |
2ec749cb GH |
954 | break; |
955 | case 5: | |
bb729f75 | 956 | return ldl_be_p(&buf[6]) & 0xffffffffULL; |
2ec749cb GH |
957 | break; |
958 | default: | |
959 | return -1; | |
960 | } | |
bb729f75 | 961 | } |
2ec749cb | 962 | |
1894df02 | 963 | static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
bb729f75 | 964 | { |
1894df02 | 965 | cmd->xfer = scsi_cdb_xfer(buf); |
2599aece | 966 | switch (buf[0]) { |
2ec749cb | 967 | case TEST_UNIT_READY: |
5e30a07d | 968 | case REWIND: |
2ec749cb | 969 | case START_STOP: |
00a01ad4 | 970 | case SET_CAPACITY: |
2ec749cb | 971 | case WRITE_FILEMARKS: |
06b86357 | 972 | case WRITE_FILEMARKS_16: |
2ec749cb | 973 | case SPACE: |
a5e3d9ef BK |
974 | case RESERVE: |
975 | case RELEASE: | |
2ec749cb GH |
976 | case ERASE: |
977 | case ALLOW_MEDIUM_REMOVAL: | |
2ec749cb GH |
978 | case SEEK_10: |
979 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
980 | case SYNCHRONIZE_CACHE_16: |
981 | case LOCATE_16: | |
2ec749cb | 982 | case LOCK_UNLOCK_CACHE: |
2ec749cb GH |
983 | case SET_CD_SPEED: |
984 | case SET_LIMITS: | |
5e30a07d | 985 | case WRITE_LONG_10: |
2ec749cb | 986 | case UPDATE_BLOCK: |
06b86357 PB |
987 | case RESERVE_TRACK: |
988 | case SET_READ_AHEAD: | |
989 | case PRE_FETCH: | |
990 | case PRE_FETCH_16: | |
991 | case ALLOW_OVERWRITE: | |
2599aece | 992 | cmd->xfer = 0; |
2ec749cb | 993 | break; |
d12ad44c PB |
994 | case VERIFY_10: |
995 | case VERIFY_12: | |
996 | case VERIFY_16: | |
997 | if ((buf[1] & 2) == 0) { | |
998 | cmd->xfer = 0; | |
7ef8cf9a | 999 | } else if ((buf[1] & 4) != 0) { |
d12ad44c PB |
1000 | cmd->xfer = 1; |
1001 | } | |
1002 | cmd->xfer *= dev->blocksize; | |
1003 | break; | |
2ec749cb GH |
1004 | case MODE_SENSE: |
1005 | break; | |
5e30a07d | 1006 | case WRITE_SAME_10: |
a5ee9085 PB |
1007 | case WRITE_SAME_16: |
1008 | cmd->xfer = dev->blocksize; | |
2ec749cb | 1009 | break; |
5e30a07d | 1010 | case READ_CAPACITY_10: |
2599aece | 1011 | cmd->xfer = 8; |
2ec749cb GH |
1012 | break; |
1013 | case READ_BLOCK_LIMITS: | |
2599aece | 1014 | cmd->xfer = 6; |
2ec749cb | 1015 | break; |
2ec749cb | 1016 | case SEND_VOLUME_TAG: |
06b86357 PB |
1017 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
1018 | if (dev->type == TYPE_ROM) { | |
1019 | cmd->xfer = buf[10] | (buf[9] << 8); | |
1020 | } else { | |
1021 | cmd->xfer = buf[9] | (buf[8] << 8); | |
1022 | } | |
2ec749cb | 1023 | break; |
f62d0594 PB |
1024 | case WRITE_6: |
1025 | /* length 0 means 256 blocks */ | |
1026 | if (cmd->xfer == 0) { | |
1027 | cmd->xfer = 256; | |
1028 | } | |
c4ce4c4b | 1029 | /* fall through */ |
2ec749cb | 1030 | case WRITE_10: |
5e30a07d | 1031 | case WRITE_VERIFY_10: |
2ec749cb GH |
1032 | case WRITE_12: |
1033 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1034 | case WRITE_16: |
1035 | case WRITE_VERIFY_16: | |
2599aece | 1036 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1037 | break; |
2ec749cb GH |
1038 | case READ_6: |
1039 | case READ_REVERSE: | |
f62d0594 PB |
1040 | /* length 0 means 256 blocks */ |
1041 | if (cmd->xfer == 0) { | |
1042 | cmd->xfer = 256; | |
1043 | } | |
c4ce4c4b | 1044 | /* fall through */ |
f62d0594 | 1045 | case READ_10: |
2ec749cb | 1046 | case READ_12: |
bd536cf3 | 1047 | case READ_16: |
2599aece | 1048 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1049 | break; |
06b86357 PB |
1050 | case FORMAT_UNIT: |
1051 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
1052 | * for block devices are restricted to the header right now. */ | |
1053 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
1054 | cmd->xfer = 12; | |
1055 | } else { | |
1056 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
1057 | } | |
1058 | break; | |
2ec749cb | 1059 | case INQUIRY: |
06b86357 PB |
1060 | case RECEIVE_DIAGNOSTIC: |
1061 | case SEND_DIAGNOSTIC: | |
2599aece | 1062 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 1063 | break; |
06b86357 PB |
1064 | case READ_CD: |
1065 | case READ_BUFFER: | |
1066 | case WRITE_BUFFER: | |
1067 | case SEND_CUE_SHEET: | |
1068 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1069 | break; | |
1070 | case PERSISTENT_RESERVE_OUT: | |
1071 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
1072 | break; | |
1073 | case ERASE_12: | |
1074 | if (dev->type == TYPE_ROM) { | |
1075 | /* MMC command GET PERFORMANCE. */ | |
1076 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
1077 | buf[10], buf[1] & 0x1f); | |
1078 | } | |
1079 | break; | |
1080 | case MECHANISM_STATUS: | |
1081 | case READ_DVD_STRUCTURE: | |
1082 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
1083 | case MAINTENANCE_OUT: |
1084 | case MAINTENANCE_IN: | |
2599aece | 1085 | if (dev->type == TYPE_ROM) { |
c7126d5b | 1086 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 1087 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
1088 | } |
1089 | break; | |
e4b65262 CM |
1090 | case ATA_PASSTHROUGH_12: |
1091 | if (dev->type == TYPE_ROM) { | |
1092 | /* BLANK command of MMC */ | |
1093 | cmd->xfer = 0; | |
1094 | } else { | |
1894df02 | 1095 | cmd->xfer = ata_passthrough_12_xfer(dev, buf); |
e4b65262 CM |
1096 | } |
1097 | break; | |
1098 | case ATA_PASSTHROUGH_16: | |
1894df02 | 1099 | cmd->xfer = ata_passthrough_16_xfer(dev, buf); |
e4b65262 | 1100 | break; |
2ec749cb GH |
1101 | } |
1102 | return 0; | |
1103 | } | |
1104 | ||
1894df02 | 1105 | static int scsi_req_stream_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 1106 | { |
2599aece | 1107 | switch (buf[0]) { |
2ec749cb | 1108 | /* stream commands */ |
06b86357 PB |
1109 | case ERASE_12: |
1110 | case ERASE_16: | |
1111 | cmd->xfer = 0; | |
1112 | break; | |
2ec749cb GH |
1113 | case READ_6: |
1114 | case READ_REVERSE: | |
1115 | case RECOVER_BUFFERED_DATA: | |
1116 | case WRITE_6: | |
2599aece PB |
1117 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); |
1118 | if (buf[1] & 0x01) { /* fixed */ | |
1119 | cmd->xfer *= dev->blocksize; | |
1120 | } | |
2ec749cb | 1121 | break; |
065c2599 PB |
1122 | case READ_16: |
1123 | case READ_REVERSE_16: | |
1124 | case VERIFY_16: | |
1125 | case WRITE_16: | |
065c2599 PB |
1126 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); |
1127 | if (buf[1] & 0x01) { /* fixed */ | |
1128 | cmd->xfer *= dev->blocksize; | |
1129 | } | |
1130 | break; | |
2ec749cb | 1131 | case REWIND: |
15e58a21 | 1132 | case LOAD_UNLOAD: |
2599aece | 1133 | cmd->xfer = 0; |
2ec749cb | 1134 | break; |
06b86357 PB |
1135 | case SPACE_16: |
1136 | cmd->xfer = buf[13] | (buf[12] << 8); | |
1137 | break; | |
1138 | case READ_POSITION: | |
9ce1bb2d CH |
1139 | switch (buf[1] & 0x1f) /* operation code */ { |
1140 | case SHORT_FORM_BLOCK_ID: | |
1141 | case SHORT_FORM_VENDOR_SPECIFIC: | |
1142 | cmd->xfer = 20; | |
1143 | break; | |
1144 | case LONG_FORM: | |
1145 | cmd->xfer = 32; | |
1146 | break; | |
1147 | case EXTENDED_FORM: | |
1148 | cmd->xfer = buf[8] | (buf[7] << 8); | |
1149 | break; | |
1150 | default: | |
1151 | return -1; | |
1152 | } | |
1153 | ||
06b86357 PB |
1154 | break; |
1155 | case FORMAT_UNIT: | |
1156 | cmd->xfer = buf[4] | (buf[3] << 8); | |
1157 | break; | |
2ec749cb GH |
1158 | /* generic commands */ |
1159 | default: | |
1894df02 | 1160 | return scsi_req_xfer(cmd, dev, buf); |
2ec749cb GH |
1161 | } |
1162 | return 0; | |
1163 | } | |
1164 | ||
1894df02 | 1165 | static int scsi_req_medium_changer_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
40723a99 CH |
1166 | { |
1167 | switch (buf[0]) { | |
1168 | /* medium changer commands */ | |
1169 | case EXCHANGE_MEDIUM: | |
1170 | case INITIALIZE_ELEMENT_STATUS: | |
1171 | case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: | |
1172 | case MOVE_MEDIUM: | |
1173 | case POSITION_TO_ELEMENT: | |
1174 | cmd->xfer = 0; | |
1175 | break; | |
1176 | case READ_ELEMENT_STATUS: | |
1177 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); | |
1178 | break; | |
1179 | ||
1180 | /* generic commands */ | |
1181 | default: | |
1894df02 | 1182 | return scsi_req_xfer(cmd, dev, buf); |
40723a99 CH |
1183 | } |
1184 | return 0; | |
1185 | } | |
1186 | ||
297b044a JL |
1187 | static int scsi_req_scanner_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
1188 | { | |
1189 | switch (buf[0]) { | |
1190 | /* Scanner commands */ | |
1191 | case OBJECT_POSITION: | |
1192 | cmd->xfer = 0; | |
1193 | break; | |
1194 | case SCAN: | |
1195 | cmd->xfer = buf[4]; | |
1196 | break; | |
1197 | case READ_10: | |
1198 | case SEND: | |
1199 | case GET_WINDOW: | |
1200 | case SET_WINDOW: | |
1201 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1202 | break; | |
1203 | default: | |
1204 | /* GET_DATA_BUFFER_STATUS xfer handled by scsi_req_xfer */ | |
1205 | return scsi_req_xfer(cmd, dev, buf); | |
1206 | } | |
1207 | ||
1208 | return 0; | |
1209 | } | |
40723a99 | 1210 | |
2599aece | 1211 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 1212 | { |
a5ee9085 PB |
1213 | if (!cmd->xfer) { |
1214 | cmd->mode = SCSI_XFER_NONE; | |
1215 | return; | |
1216 | } | |
2599aece | 1217 | switch (cmd->buf[0]) { |
97a06435 GH |
1218 | case WRITE_6: |
1219 | case WRITE_10: | |
5e30a07d | 1220 | case WRITE_VERIFY_10: |
97a06435 GH |
1221 | case WRITE_12: |
1222 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1223 | case WRITE_16: |
1224 | case WRITE_VERIFY_16: | |
d12ad44c PB |
1225 | case VERIFY_10: |
1226 | case VERIFY_12: | |
1227 | case VERIFY_16: | |
97a06435 GH |
1228 | case COPY: |
1229 | case COPY_VERIFY: | |
1230 | case COMPARE: | |
1231 | case CHANGE_DEFINITION: | |
1232 | case LOG_SELECT: | |
1233 | case MODE_SELECT: | |
1234 | case MODE_SELECT_10: | |
1235 | case SEND_DIAGNOSTIC: | |
1236 | case WRITE_BUFFER: | |
1237 | case FORMAT_UNIT: | |
1238 | case REASSIGN_BLOCKS: | |
97a06435 GH |
1239 | case SEARCH_EQUAL: |
1240 | case SEARCH_HIGH: | |
1241 | case SEARCH_LOW: | |
1242 | case UPDATE_BLOCK: | |
5e30a07d HR |
1243 | case WRITE_LONG_10: |
1244 | case WRITE_SAME_10: | |
a5ee9085 | 1245 | case WRITE_SAME_16: |
381b634c | 1246 | case UNMAP: |
97a06435 GH |
1247 | case SEARCH_HIGH_12: |
1248 | case SEARCH_EQUAL_12: | |
1249 | case SEARCH_LOW_12: | |
97a06435 GH |
1250 | case MEDIUM_SCAN: |
1251 | case SEND_VOLUME_TAG: | |
06b86357 PB |
1252 | case SEND_CUE_SHEET: |
1253 | case SEND_DVD_STRUCTURE: | |
01bedeba | 1254 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 1255 | case MAINTENANCE_OUT: |
297b044a JL |
1256 | case SET_WINDOW: |
1257 | case SCAN: | |
1258 | /* SCAN conflicts with START_STOP. START_STOP has cmd->xfer set to 0 for | |
1259 | * non-scanner devices, so we only get here for SCAN and not for START_STOP. | |
1260 | */ | |
2599aece | 1261 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 | 1262 | break; |
e4b65262 CM |
1263 | case ATA_PASSTHROUGH_12: |
1264 | case ATA_PASSTHROUGH_16: | |
1265 | /* T_DIR */ | |
1266 | cmd->mode = (cmd->buf[2] & 0x8) ? | |
1267 | SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV; | |
1268 | break; | |
97a06435 | 1269 | default: |
a5ee9085 | 1270 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
1271 | break; |
1272 | } | |
1273 | } | |
1274 | ||
2599aece | 1275 | static uint64_t scsi_cmd_lba(SCSICommand *cmd) |
2ec749cb | 1276 | { |
2599aece | 1277 | uint8_t *buf = cmd->buf; |
2ec749cb GH |
1278 | uint64_t lba; |
1279 | ||
1280 | switch (buf[0] >> 5) { | |
1281 | case 0: | |
bd5da232 | 1282 | lba = ldl_be_p(&buf[0]) & 0x1fffff; |
2ec749cb GH |
1283 | break; |
1284 | case 1: | |
1285 | case 2: | |
bd5da232 | 1286 | case 5: |
06b86357 | 1287 | lba = ldl_be_p(&buf[2]) & 0xffffffffULL; |
2ec749cb GH |
1288 | break; |
1289 | case 4: | |
bd5da232 | 1290 | lba = ldq_be_p(&buf[2]); |
2ec749cb GH |
1291 | break; |
1292 | default: | |
1293 | lba = -1; | |
1294 | ||
1295 | } | |
1296 | return lba; | |
1297 | } | |
1298 | ||
1894df02 HR |
1299 | int scsi_cdb_length(uint8_t *buf) { |
1300 | int cdb_len; | |
2ec749cb | 1301 | |
28b70c9d PB |
1302 | switch (buf[0] >> 5) { |
1303 | case 0: | |
1894df02 | 1304 | cdb_len = 6; |
28b70c9d PB |
1305 | break; |
1306 | case 1: | |
1307 | case 2: | |
1894df02 | 1308 | cdb_len = 10; |
28b70c9d PB |
1309 | break; |
1310 | case 4: | |
1894df02 | 1311 | cdb_len = 16; |
28b70c9d PB |
1312 | break; |
1313 | case 5: | |
1894df02 | 1314 | cdb_len = 12; |
28b70c9d PB |
1315 | break; |
1316 | default: | |
1894df02 | 1317 | cdb_len = -1; |
28b70c9d | 1318 | } |
1894df02 HR |
1319 | return cdb_len; |
1320 | } | |
1321 | ||
1322 | int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf) | |
1323 | { | |
1324 | int rc; | |
c170aad8 | 1325 | int len; |
1894df02 HR |
1326 | |
1327 | cmd->lba = -1; | |
c170aad8 PB |
1328 | len = scsi_cdb_length(buf); |
1329 | if (len < 0) { | |
1330 | return -1; | |
1331 | } | |
28b70c9d | 1332 | |
c170aad8 | 1333 | cmd->len = len; |
40723a99 CH |
1334 | switch (dev->type) { |
1335 | case TYPE_TAPE: | |
1894df02 | 1336 | rc = scsi_req_stream_xfer(cmd, dev, buf); |
40723a99 CH |
1337 | break; |
1338 | case TYPE_MEDIUM_CHANGER: | |
1894df02 | 1339 | rc = scsi_req_medium_changer_xfer(cmd, dev, buf); |
40723a99 | 1340 | break; |
297b044a JL |
1341 | case TYPE_SCANNER: |
1342 | rc = scsi_req_scanner_length(cmd, dev, buf); | |
1343 | break; | |
40723a99 | 1344 | default: |
1894df02 | 1345 | rc = scsi_req_xfer(cmd, dev, buf); |
40723a99 | 1346 | break; |
2ec749cb | 1347 | } |
40723a99 | 1348 | |
2ec749cb GH |
1349 | if (rc != 0) |
1350 | return rc; | |
1351 | ||
afa46c46 PB |
1352 | memcpy(cmd->buf, buf, cmd->len); |
1353 | scsi_cmd_xfer_mode(cmd); | |
1354 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1355 | return 0; |
1356 | } | |
ed3a34a3 | 1357 | |
53200fad PB |
1358 | void scsi_device_report_change(SCSIDevice *dev, SCSISense sense) |
1359 | { | |
1360 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1361 | ||
1362 | scsi_device_set_ua(dev, sense); | |
1363 | if (bus->info->change) { | |
1364 | bus->info->change(bus, dev, sense); | |
1365 | } | |
1366 | } | |
1367 | ||
a1f0cce2 HR |
1368 | /* |
1369 | * Predefined sense codes | |
1370 | */ | |
1371 | ||
1372 | /* No sense data available */ | |
1373 | const struct SCSISense sense_code_NO_SENSE = { | |
1374 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 | |
1375 | }; | |
1376 | ||
1377 | /* LUN not ready, Manual intervention required */ | |
1378 | const struct SCSISense sense_code_LUN_NOT_READY = { | |
1379 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 | |
1380 | }; | |
1381 | ||
1382 | /* LUN not ready, Medium not present */ | |
1383 | const struct SCSISense sense_code_NO_MEDIUM = { | |
1384 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 | |
1385 | }; | |
1386 | ||
68bb01f3 MA |
1387 | /* LUN not ready, medium removal prevented */ |
1388 | const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = { | |
93161b69 | 1389 | .key = NOT_READY, .asc = 0x53, .ascq = 0x02 |
68bb01f3 MA |
1390 | }; |
1391 | ||
a1f0cce2 HR |
1392 | /* Hardware error, internal target failure */ |
1393 | const struct SCSISense sense_code_TARGET_FAILURE = { | |
1394 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 | |
1395 | }; | |
1396 | ||
1397 | /* Illegal request, invalid command operation code */ | |
1398 | const struct SCSISense sense_code_INVALID_OPCODE = { | |
1399 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 | |
1400 | }; | |
1401 | ||
1402 | /* Illegal request, LBA out of range */ | |
1403 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { | |
1404 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 | |
1405 | }; | |
1406 | ||
1407 | /* Illegal request, Invalid field in CDB */ | |
1408 | const struct SCSISense sense_code_INVALID_FIELD = { | |
1409 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 | |
1410 | }; | |
1411 | ||
380feaff PB |
1412 | /* Illegal request, Invalid field in parameter list */ |
1413 | const struct SCSISense sense_code_INVALID_PARAM = { | |
1414 | .key = ILLEGAL_REQUEST, .asc = 0x26, .ascq = 0x00 | |
1415 | }; | |
1416 | ||
1417 | /* Illegal request, Parameter list length error */ | |
1418 | const struct SCSISense sense_code_INVALID_PARAM_LEN = { | |
1419 | .key = ILLEGAL_REQUEST, .asc = 0x1a, .ascq = 0x00 | |
1420 | }; | |
1421 | ||
a1f0cce2 HR |
1422 | /* Illegal request, LUN not supported */ |
1423 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { | |
1424 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 | |
1425 | }; | |
1426 | ||
a872a304 PB |
1427 | /* Illegal request, Saving parameters not supported */ |
1428 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { | |
1429 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 | |
1430 | }; | |
1431 | ||
1432 | /* Illegal request, Incompatible medium installed */ | |
67cc61e4 | 1433 | const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = { |
a872a304 PB |
1434 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 |
1435 | }; | |
1436 | ||
68bb01f3 MA |
1437 | /* Illegal request, medium removal prevented */ |
1438 | const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = { | |
93161b69 | 1439 | .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x02 |
68bb01f3 MA |
1440 | }; |
1441 | ||
9ec557bd HG |
1442 | /* Illegal request, Invalid Transfer Tag */ |
1443 | const struct SCSISense sense_code_INVALID_TAG = { | |
1444 | .key = ILLEGAL_REQUEST, .asc = 0x4b, .ascq = 0x01 | |
1445 | }; | |
1446 | ||
a1f0cce2 HR |
1447 | /* Command aborted, I/O process terminated */ |
1448 | const struct SCSISense sense_code_IO_ERROR = { | |
1449 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 | |
1450 | }; | |
1451 | ||
1452 | /* Command aborted, I_T Nexus loss occurred */ | |
1453 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { | |
1454 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 | |
1455 | }; | |
1456 | ||
1457 | /* Command aborted, Logical Unit failure */ | |
1458 | const struct SCSISense sense_code_LUN_FAILURE = { | |
1459 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 | |
1460 | }; | |
1461 | ||
9ec557bd HG |
1462 | /* Command aborted, Overlapped Commands Attempted */ |
1463 | const struct SCSISense sense_code_OVERLAPPED_COMMANDS = { | |
1464 | .key = ABORTED_COMMAND, .asc = 0x4e, .ascq = 0x00 | |
1465 | }; | |
1466 | ||
aaebacef PB |
1467 | /* Unit attention, Capacity data has changed */ |
1468 | const struct SCSISense sense_code_CAPACITY_CHANGED = { | |
1469 | .key = UNIT_ATTENTION, .asc = 0x2a, .ascq = 0x09 | |
1470 | }; | |
1471 | ||
a872a304 PB |
1472 | /* Unit attention, Power on, reset or bus device reset occurred */ |
1473 | const struct SCSISense sense_code_RESET = { | |
1474 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 | |
1475 | }; | |
1476 | ||
8a9c16f6 PB |
1477 | /* Unit attention, No medium */ |
1478 | const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = { | |
1479 | .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00 | |
1480 | }; | |
1481 | ||
a872a304 PB |
1482 | /* Unit attention, Medium may have changed */ |
1483 | const struct SCSISense sense_code_MEDIUM_CHANGED = { | |
1484 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 | |
1485 | }; | |
1486 | ||
1487 | /* Unit attention, Reported LUNs data has changed */ | |
1488 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { | |
1489 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e | |
1490 | }; | |
1491 | ||
1492 | /* Unit attention, Device internal reset */ | |
1493 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { | |
1494 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 | |
1495 | }; | |
1496 | ||
6a8a685c RS |
1497 | /* Data Protection, Write Protected */ |
1498 | const struct SCSISense sense_code_WRITE_PROTECTED = { | |
1499 | .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x00 | |
1500 | }; | |
1501 | ||
703dd81a PB |
1502 | /* Data Protection, Space Allocation Failed Write Protect */ |
1503 | const struct SCSISense sense_code_SPACE_ALLOC_FAILED = { | |
1504 | .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x07 | |
1505 | }; | |
1506 | ||
a1f0cce2 HR |
1507 | /* |
1508 | * scsi_build_sense | |
1509 | * | |
b45ef674 | 1510 | * Convert between fixed and descriptor sense buffers |
a1f0cce2 | 1511 | */ |
b45ef674 PB |
1512 | int scsi_build_sense(uint8_t *in_buf, int in_len, |
1513 | uint8_t *buf, int len, bool fixed) | |
a1f0cce2 | 1514 | { |
b45ef674 PB |
1515 | bool fixed_in; |
1516 | SCSISense sense; | |
a1f0cce2 HR |
1517 | if (!fixed && len < 8) { |
1518 | return 0; | |
1519 | } | |
1520 | ||
b45ef674 PB |
1521 | if (in_len == 0) { |
1522 | sense.key = NO_SENSE; | |
1523 | sense.asc = 0; | |
1524 | sense.ascq = 0; | |
1525 | } else { | |
1526 | fixed_in = (in_buf[0] & 2) == 0; | |
1527 | ||
1528 | if (fixed == fixed_in) { | |
1529 | memcpy(buf, in_buf, MIN(len, in_len)); | |
1530 | return MIN(len, in_len); | |
1531 | } | |
1532 | ||
1533 | if (fixed_in) { | |
1534 | sense.key = in_buf[2]; | |
1535 | sense.asc = in_buf[12]; | |
1536 | sense.ascq = in_buf[13]; | |
1537 | } else { | |
1538 | sense.key = in_buf[1]; | |
1539 | sense.asc = in_buf[2]; | |
1540 | sense.ascq = in_buf[3]; | |
1541 | } | |
1542 | } | |
1543 | ||
a1f0cce2 HR |
1544 | memset(buf, 0, len); |
1545 | if (fixed) { | |
1546 | /* Return fixed format sense buffer */ | |
77e4743c | 1547 | buf[0] = 0x70; |
a1f0cce2 | 1548 | buf[2] = sense.key; |
eae31cb9 | 1549 | buf[7] = 10; |
a1f0cce2 HR |
1550 | buf[12] = sense.asc; |
1551 | buf[13] = sense.ascq; | |
84642435 | 1552 | return MIN(len, SCSI_SENSE_LEN); |
a1f0cce2 HR |
1553 | } else { |
1554 | /* Return descriptor format sense buffer */ | |
1555 | buf[0] = 0x72; | |
1556 | buf[1] = sense.key; | |
1557 | buf[2] = sense.asc; | |
1558 | buf[3] = sense.ascq; | |
1559 | return 8; | |
1560 | } | |
1561 | } | |
1562 | ||
b9e77bc7 | 1563 | const char *scsi_command_name(uint8_t cmd) |
ec766865 GH |
1564 | { |
1565 | static const char *names[] = { | |
1566 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", | |
5e30a07d | 1567 | [ REWIND ] = "REWIND", |
ec766865 GH |
1568 | [ REQUEST_SENSE ] = "REQUEST_SENSE", |
1569 | [ FORMAT_UNIT ] = "FORMAT_UNIT", | |
1570 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", | |
40723a99 CH |
1571 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS/INITIALIZE ELEMENT STATUS", |
1572 | /* LOAD_UNLOAD and INITIALIZE_ELEMENT_STATUS use the same operation code */ | |
ec766865 GH |
1573 | [ READ_6 ] = "READ_6", |
1574 | [ WRITE_6 ] = "WRITE_6", | |
00a01ad4 | 1575 | [ SET_CAPACITY ] = "SET_CAPACITY", |
ec766865 GH |
1576 | [ READ_REVERSE ] = "READ_REVERSE", |
1577 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", | |
1578 | [ SPACE ] = "SPACE", | |
1579 | [ INQUIRY ] = "INQUIRY", | |
1580 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", | |
c7126d5b NB |
1581 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", |
1582 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
ec766865 GH |
1583 | [ MODE_SELECT ] = "MODE_SELECT", |
1584 | [ RESERVE ] = "RESERVE", | |
1585 | [ RELEASE ] = "RELEASE", | |
1586 | [ COPY ] = "COPY", | |
1587 | [ ERASE ] = "ERASE", | |
1588 | [ MODE_SENSE ] = "MODE_SENSE", | |
15e58a21 CH |
1589 | [ START_STOP ] = "START_STOP/LOAD_UNLOAD", |
1590 | /* LOAD_UNLOAD and START_STOP use the same operation code */ | |
ec766865 GH |
1591 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", |
1592 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", | |
1593 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", | |
5e30a07d | 1594 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", |
ec766865 GH |
1595 | [ READ_10 ] = "READ_10", |
1596 | [ WRITE_10 ] = "WRITE_10", | |
40723a99 CH |
1597 | [ SEEK_10 ] = "SEEK_10/POSITION_TO_ELEMENT", |
1598 | /* SEEK_10 and POSITION_TO_ELEMENT use the same operation code */ | |
5e30a07d HR |
1599 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", |
1600 | [ VERIFY_10 ] = "VERIFY_10", | |
ec766865 GH |
1601 | [ SEARCH_HIGH ] = "SEARCH_HIGH", |
1602 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", | |
1603 | [ SEARCH_LOW ] = "SEARCH_LOW", | |
1604 | [ SET_LIMITS ] = "SET_LIMITS", | |
00a01ad4 | 1605 | [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION", |
545557d4 | 1606 | /* READ_POSITION and PRE_FETCH use the same operation code */ |
ec766865 GH |
1607 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", |
1608 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", | |
40723a99 CH |
1609 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA/INITIALIZE_ELEMENT_STATUS_WITH_RANGE", |
1610 | /* READ_DEFECT_DATA and INITIALIZE_ELEMENT_STATUS_WITH_RANGE use the same operation code */ | |
ec766865 GH |
1611 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", |
1612 | [ COMPARE ] = "COMPARE", | |
1613 | [ COPY_VERIFY ] = "COPY_VERIFY", | |
1614 | [ WRITE_BUFFER ] = "WRITE_BUFFER", | |
1615 | [ READ_BUFFER ] = "READ_BUFFER", | |
1616 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", | |
5e30a07d HR |
1617 | [ READ_LONG_10 ] = "READ_LONG_10", |
1618 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", | |
ec766865 | 1619 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", |
5e30a07d HR |
1620 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", |
1621 | [ UNMAP ] = "UNMAP", | |
ec766865 | 1622 | [ READ_TOC ] = "READ_TOC", |
5e30a07d | 1623 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", |
3e46d87d | 1624 | [ SANITIZE ] = "SANITIZE", |
5e30a07d | 1625 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", |
ec766865 GH |
1626 | [ LOG_SELECT ] = "LOG_SELECT", |
1627 | [ LOG_SENSE ] = "LOG_SENSE", | |
1628 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", | |
1629 | [ RESERVE_10 ] = "RESERVE_10", | |
1630 | [ RELEASE_10 ] = "RELEASE_10", | |
1631 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", | |
1632 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", | |
1633 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", | |
5e30a07d HR |
1634 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", |
1635 | [ EXTENDED_COPY ] = "EXTENDED_COPY", | |
e4b65262 | 1636 | [ ATA_PASSTHROUGH_16 ] = "ATA_PASSTHROUGH_16", |
5e30a07d HR |
1637 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", |
1638 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", | |
1639 | [ READ_16 ] = "READ_16", | |
1640 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", | |
1641 | [ WRITE_16 ] = "WRITE_16", | |
1642 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", | |
1643 | [ VERIFY_16 ] = "VERIFY_16", | |
00a01ad4 PB |
1644 | [ PRE_FETCH_16 ] = "PRE_FETCH_16", |
1645 | [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16", | |
1646 | /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */ | |
5e30a07d | 1647 | [ LOCATE_16 ] = "LOCATE_16", |
00a01ad4 | 1648 | [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16", |
48bb9f53 | 1649 | /* ERASE_16 and WRITE_SAME_16 use the same operation code */ |
f6515262 | 1650 | [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16", |
5e30a07d HR |
1651 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", |
1652 | [ REPORT_LUNS ] = "REPORT_LUNS", | |
e4b65262 | 1653 | [ ATA_PASSTHROUGH_12 ] = "BLANK/ATA_PASSTHROUGH_12", |
ec766865 | 1654 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", |
40723a99 | 1655 | [ EXCHANGE_MEDIUM ] = "EXCHANGE MEDIUM", |
ec766865 GH |
1656 | [ READ_12 ] = "READ_12", |
1657 | [ WRITE_12 ] = "WRITE_12", | |
00a01ad4 PB |
1658 | [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE", |
1659 | /* ERASE_12 and GET_PERFORMANCE use the same operation code */ | |
f6515262 | 1660 | [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12", |
ec766865 | 1661 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", |
5e30a07d | 1662 | [ VERIFY_12 ] = "VERIFY_12", |
ec766865 GH |
1663 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", |
1664 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", | |
1665 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", | |
1666 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", | |
00a01ad4 PB |
1667 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING", |
1668 | /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */ | |
1669 | [ READ_CD ] = "READ_CD", | |
5e30a07d | 1670 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", |
00a01ad4 PB |
1671 | [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE", |
1672 | [ RESERVE_TRACK ] = "RESERVE_TRACK", | |
1673 | [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET", | |
1674 | [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE", | |
ec766865 | 1675 | [ SET_CD_SPEED ] = "SET_CD_SPEED", |
00a01ad4 PB |
1676 | [ SET_READ_AHEAD ] = "SET_READ_AHEAD", |
1677 | [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE", | |
1678 | [ MECHANISM_STATUS ] = "MECHANISM_STATUS", | |
b9e77bc7 AK |
1679 | [ GET_EVENT_STATUS_NOTIFICATION ] = "GET_EVENT_STATUS_NOTIFICATION", |
1680 | [ READ_DISC_INFORMATION ] = "READ_DISC_INFORMATION", | |
ec766865 GH |
1681 | }; |
1682 | ||
1683 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) | |
1684 | return "*UNKNOWN*"; | |
1685 | return names[cmd]; | |
1686 | } | |
1687 | ||
ad2d30f7 PB |
1688 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1689 | { | |
8e86b93c | 1690 | assert(req->refcount > 0); |
ad2d30f7 PB |
1691 | req->refcount++; |
1692 | return req; | |
1693 | } | |
1694 | ||
1695 | void scsi_req_unref(SCSIRequest *req) | |
1696 | { | |
68bd348a | 1697 | assert(req->refcount > 0); |
ad2d30f7 | 1698 | if (--req->refcount == 0) { |
cac3c384 PB |
1699 | BusState *qbus = req->dev->qdev.parent_bus; |
1700 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus); | |
1701 | ||
8e86b93c PB |
1702 | if (bus->info->free_request && req->hba_private) { |
1703 | bus->info->free_request(bus, req->hba_private); | |
1704 | } | |
12010e7b PB |
1705 | if (req->ops->free_req) { |
1706 | req->ops->free_req(req); | |
ad2d30f7 | 1707 | } |
cac3c384 PB |
1708 | object_unref(OBJECT(req->dev)); |
1709 | object_unref(OBJECT(qbus->parent)); | |
633dccb4 | 1710 | g_free(req); |
ad2d30f7 PB |
1711 | } |
1712 | } | |
1713 | ||
ad3376cc PB |
1714 | /* Tell the device that we finished processing this chunk of I/O. It |
1715 | will start the next chunk or complete the command. */ | |
1716 | void scsi_req_continue(SCSIRequest *req) | |
1717 | { | |
6f6710aa PB |
1718 | if (req->io_canceled) { |
1719 | trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); | |
1720 | return; | |
1721 | } | |
ad3376cc PB |
1722 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
1723 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1724 | req->ops->write_data(req); |
ad3376cc | 1725 | } else { |
12010e7b | 1726 | req->ops->read_data(req); |
ad3376cc PB |
1727 | } |
1728 | } | |
1729 | ||
ab9adc88 PB |
1730 | /* Called by the devices when data is ready for the HBA. The HBA should |
1731 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1732 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1733 | void scsi_req_data(SCSIRequest *req, int len) |
1734 | { | |
3d5aba97 | 1735 | uint8_t *buf; |
e88c591d PB |
1736 | if (req->io_canceled) { |
1737 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1738 | return; |
e88c591d | 1739 | } |
01e95455 PB |
1740 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1741 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1742 | if (!req->sg) { |
1743 | req->resid -= len; | |
1744 | req->bus->info->transfer_data(req, len); | |
1745 | return; | |
1746 | } | |
1747 | ||
1748 | /* If the device calls scsi_req_data and the HBA specified a | |
1749 | * scatter/gather list, the transfer has to happen in a single | |
1750 | * step. */ | |
1751 | assert(!req->dma_started); | |
1752 | req->dma_started = true; | |
1753 | ||
1754 | buf = scsi_req_get_buf(req); | |
1755 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1756 | req->resid = dma_buf_read(buf, len, req->sg); | |
1757 | } else { | |
1758 | req->resid = dma_buf_write(buf, len, req->sg); | |
1759 | } | |
1760 | scsi_req_continue(req); | |
ab9adc88 PB |
1761 | } |
1762 | ||
ec766865 GH |
1763 | void scsi_req_print(SCSIRequest *req) |
1764 | { | |
1765 | FILE *fp = stderr; | |
1766 | int i; | |
1767 | ||
1768 | fprintf(fp, "[%s id=%d] %s", | |
1769 | req->dev->qdev.parent_bus->name, | |
1770 | req->dev->id, | |
1771 | scsi_command_name(req->cmd.buf[0])); | |
1772 | for (i = 1; i < req->cmd.len; i++) { | |
1773 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1774 | } | |
1775 | switch (req->cmd.mode) { | |
1776 | case SCSI_XFER_NONE: | |
1777 | fprintf(fp, " - none\n"); | |
1778 | break; | |
1779 | case SCSI_XFER_FROM_DEV: | |
1780 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1781 | break; | |
1782 | case SCSI_XFER_TO_DEV: | |
1783 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1784 | break; | |
1785 | default: | |
1786 | fprintf(fp, " - Oops\n"); | |
1787 | break; | |
1788 | } | |
1789 | } | |
1790 | ||
682a9b21 | 1791 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1792 | { |
682a9b21 PB |
1793 | assert(req->status == -1); |
1794 | req->status = status; | |
b45ef674 | 1795 | |
335f560f | 1796 | assert(req->sense_len <= sizeof(req->sense)); |
b45ef674 PB |
1797 | if (status == GOOD) { |
1798 | req->sense_len = 0; | |
1799 | } | |
1800 | ||
1801 | if (req->sense_len) { | |
1802 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1803 | req->dev->sense_len = req->sense_len; |
1804 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1805 | } else { | |
1806 | req->dev->sense_len = 0; | |
1807 | req->dev->sense_is_ua = false; | |
b45ef674 | 1808 | } |
b45ef674 | 1809 | |
6dc06f08 PB |
1810 | /* |
1811 | * Unit attention state is now stored in the device's sense buffer | |
1812 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1813 | * flags. | |
1814 | */ | |
1815 | scsi_clear_unit_attention(req); | |
1816 | ||
ad2d30f7 | 1817 | scsi_req_ref(req); |
e8637c90 | 1818 | scsi_req_dequeue(req); |
01e95455 | 1819 | req->bus->info->complete(req, req->status, req->resid); |
8e0a9320 FZ |
1820 | |
1821 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1822 | notifier_list_notify(&req->cancel_notifiers, req); | |
ad2d30f7 | 1823 | scsi_req_unref(req); |
ed3a34a3 | 1824 | } |
db07c0f8 | 1825 | |
d5776465 FZ |
1826 | /* Called by the devices when the request is canceled. */ |
1827 | void scsi_req_cancel_complete(SCSIRequest *req) | |
1828 | { | |
1829 | assert(req->io_canceled); | |
1830 | if (req->bus->info->cancel) { | |
1831 | req->bus->info->cancel(req); | |
1832 | } | |
8e0a9320 | 1833 | notifier_list_notify(&req->cancel_notifiers, req); |
d5776465 FZ |
1834 | scsi_req_unref(req); |
1835 | } | |
1836 | ||
8e0a9320 FZ |
1837 | /* Cancel @req asynchronously. @notifier is added to @req's cancellation |
1838 | * notifier list, the bus will be notified the requests cancellation is | |
1839 | * completed. | |
1840 | * */ | |
1841 | void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier) | |
1842 | { | |
1843 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); | |
1844 | if (notifier) { | |
1845 | notifier_list_add(&req->cancel_notifiers, notifier); | |
1846 | } | |
3daa4107 PB |
1847 | if (req->io_canceled) { |
1848 | /* A blk_aio_cancel_async is pending; when it finishes, | |
1849 | * scsi_req_cancel_complete will be called and will | |
1850 | * call the notifier we just added. Just wait for that. | |
1851 | */ | |
1852 | assert(req->aiocb); | |
1853 | return; | |
1854 | } | |
1855 | /* Dropped in scsi_req_cancel_complete. */ | |
8e0a9320 FZ |
1856 | scsi_req_ref(req); |
1857 | scsi_req_dequeue(req); | |
1858 | req->io_canceled = true; | |
1859 | if (req->aiocb) { | |
4be74634 | 1860 | blk_aio_cancel_async(req->aiocb); |
2aeba9d8 FZ |
1861 | } else { |
1862 | scsi_req_cancel_complete(req); | |
8e0a9320 FZ |
1863 | } |
1864 | } | |
1865 | ||
94d3f98a PB |
1866 | void scsi_req_cancel(SCSIRequest *req) |
1867 | { | |
814589c4 | 1868 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); |
e88c591d PB |
1869 | if (!req->enqueued) { |
1870 | return; | |
94d3f98a | 1871 | } |
3daa4107 PB |
1872 | assert(!req->io_canceled); |
1873 | /* Dropped in scsi_req_cancel_complete. */ | |
94d3f98a PB |
1874 | scsi_req_ref(req); |
1875 | scsi_req_dequeue(req); | |
e88c591d | 1876 | req->io_canceled = true; |
a83cfd12 | 1877 | if (req->aiocb) { |
4be74634 | 1878 | blk_aio_cancel(req->aiocb); |
488eef2f PB |
1879 | } else { |
1880 | scsi_req_cancel_complete(req); | |
e88c591d | 1881 | } |
94d3f98a PB |
1882 | } |
1883 | ||
e48e84ea PB |
1884 | static int scsi_ua_precedence(SCSISense sense) |
1885 | { | |
1886 | if (sense.key != UNIT_ATTENTION) { | |
1887 | return INT_MAX; | |
1888 | } | |
1889 | if (sense.asc == 0x29 && sense.ascq == 0x04) { | |
1890 | /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */ | |
1891 | return 1; | |
1892 | } else if (sense.asc == 0x3F && sense.ascq == 0x01) { | |
1893 | /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */ | |
1894 | return 2; | |
1895 | } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) { | |
1896 | /* These two go with "all others". */ | |
1897 | ; | |
1898 | } else if (sense.asc == 0x29 && sense.ascq <= 0x07) { | |
1899 | /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0 | |
1900 | * POWER ON OCCURRED = 1 | |
1901 | * SCSI BUS RESET OCCURRED = 2 | |
1902 | * BUS DEVICE RESET FUNCTION OCCURRED = 3 | |
1903 | * I_T NEXUS LOSS OCCURRED = 7 | |
1904 | */ | |
1905 | return sense.ascq; | |
1906 | } else if (sense.asc == 0x2F && sense.ascq == 0x01) { | |
1907 | /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */ | |
1908 | return 8; | |
1909 | } | |
1910 | return (sense.asc << 8) | sense.ascq; | |
1911 | } | |
1912 | ||
1913 | void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense) | |
1914 | { | |
1915 | int prec1, prec2; | |
1916 | if (sense.key != UNIT_ATTENTION) { | |
1917 | return; | |
1918 | } | |
1919 | trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key, | |
1920 | sense.asc, sense.ascq); | |
1921 | ||
1922 | /* | |
1923 | * Override a pre-existing unit attention condition, except for a more | |
1924 | * important reset condition. | |
1925 | */ | |
1926 | prec1 = scsi_ua_precedence(sdev->unit_attention); | |
1927 | prec2 = scsi_ua_precedence(sense); | |
1928 | if (prec2 < prec1) { | |
1929 | sdev->unit_attention = sense; | |
1930 | } | |
1931 | } | |
1932 | ||
c7b48872 | 1933 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1934 | { |
1935 | SCSIRequest *req; | |
1936 | ||
8aad35f6 | 1937 | aio_context_acquire(blk_get_aio_context(sdev->conf.blk)); |
c557e889 PB |
1938 | while (!QTAILQ_EMPTY(&sdev->requests)) { |
1939 | req = QTAILQ_FIRST(&sdev->requests); | |
8aad35f6 | 1940 | scsi_req_cancel_async(req, NULL); |
c557e889 | 1941 | } |
8aad35f6 PB |
1942 | blk_drain(sdev->conf.blk); |
1943 | aio_context_release(blk_get_aio_context(sdev->conf.blk)); | |
e48e84ea | 1944 | scsi_device_set_ua(sdev, sense); |
c557e889 PB |
1945 | } |
1946 | ||
baa1bd89 PB |
1947 | static char *scsibus_get_dev_path(DeviceState *dev) |
1948 | { | |
e1dc6815 | 1949 | SCSIDevice *d = SCSI_DEVICE(dev); |
baa1bd89 | 1950 | DeviceState *hba = dev->parent_bus->parent; |
09e5ab63 | 1951 | char *id; |
b7c8c35f | 1952 | char *path; |
baa1bd89 | 1953 | |
09e5ab63 | 1954 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1955 | if (id) { |
b7c8c35f | 1956 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1957 | } else { |
b7c8c35f | 1958 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1959 | } |
b7c8c35f PB |
1960 | g_free(id); |
1961 | return path; | |
baa1bd89 PB |
1962 | } |
1963 | ||
db07c0f8 GN |
1964 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1965 | { | |
b9eea3e6 | 1966 | SCSIDevice *d = SCSI_DEVICE(dev); |
a5cf8262 JM |
1967 | return g_strdup_printf("channel@%x/%s@%x,%x", d->channel, |
1968 | qdev_fw_name(dev), d->id, d->lun); | |
f48a7a6e PB |
1969 | } |
1970 | ||
0d3545e7 | 1971 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) |
f48a7a6e | 1972 | { |
0866aca1 | 1973 | BusChild *kid; |
f48a7a6e | 1974 | SCSIDevice *target_dev = NULL; |
db07c0f8 | 1975 | |
0866aca1 AL |
1976 | QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, ChildrenHead, sibling) { |
1977 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 1978 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
db07c0f8 | 1979 | |
0d3545e7 | 1980 | if (dev->channel == channel && dev->id == id) { |
f48a7a6e PB |
1981 | if (dev->lun == lun) { |
1982 | return dev; | |
1983 | } | |
1984 | target_dev = dev; | |
1985 | } | |
1986 | } | |
1987 | return target_dev; | |
db07c0f8 | 1988 | } |
b9eea3e6 | 1989 | |
63f740dd PB |
1990 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1991 | ||
2c21ee76 JD |
1992 | static int put_scsi_requests(QEMUFile *f, void *pv, size_t size, |
1993 | VMStateField *field, QJSON *vmdesc) | |
63f740dd PB |
1994 | { |
1995 | SCSIDevice *s = pv; | |
1996 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1997 | SCSIRequest *req; | |
1998 | ||
1999 | QTAILQ_FOREACH(req, &s->requests, next) { | |
2000 | assert(!req->io_canceled); | |
2001 | assert(req->status == -1); | |
63f740dd PB |
2002 | assert(req->enqueued); |
2003 | ||
18eef3bc | 2004 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
2005 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
2006 | qemu_put_be32s(f, &req->tag); | |
2007 | qemu_put_be32s(f, &req->lun); | |
2008 | if (bus->info->save_request) { | |
2009 | bus->info->save_request(f, req); | |
2010 | } | |
2011 | if (req->ops->save_request) { | |
2012 | req->ops->save_request(f, req); | |
2013 | } | |
2014 | } | |
2015 | qemu_put_sbyte(f, 0); | |
2c21ee76 JD |
2016 | |
2017 | return 0; | |
63f740dd PB |
2018 | } |
2019 | ||
2c21ee76 JD |
2020 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size, |
2021 | VMStateField *field) | |
63f740dd PB |
2022 | { |
2023 | SCSIDevice *s = pv; | |
2024 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 2025 | int8_t sbyte; |
63f740dd | 2026 | |
18eef3bc | 2027 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
2028 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
2029 | uint32_t tag; | |
2030 | uint32_t lun; | |
2031 | SCSIRequest *req; | |
2032 | ||
2033 | qemu_get_buffer(f, buf, sizeof(buf)); | |
2034 | qemu_get_be32s(f, &tag); | |
2035 | qemu_get_be32s(f, &lun); | |
2036 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
18eef3bc | 2037 | req->retry = (sbyte == 1); |
63f740dd PB |
2038 | if (bus->info->load_request) { |
2039 | req->hba_private = bus->info->load_request(f, req); | |
2040 | } | |
2041 | if (req->ops->load_request) { | |
2042 | req->ops->load_request(f, req); | |
2043 | } | |
2044 | ||
2045 | /* Just restart it later. */ | |
63f740dd PB |
2046 | scsi_req_enqueue_internal(req); |
2047 | ||
2048 | /* At this point, the request will be kept alive by the reference | |
2049 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
2050 | * The HBA of course will add its own reference in the load_request | |
2051 | * callback if it needs to hold on the SCSIRequest. | |
2052 | */ | |
2053 | scsi_req_unref(req); | |
2054 | } | |
2055 | ||
2056 | return 0; | |
2057 | } | |
2058 | ||
12badfc2 | 2059 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
2060 | .name = "scsi-requests", |
2061 | .get = get_scsi_requests, | |
2062 | .put = put_scsi_requests, | |
2063 | }; | |
2064 | ||
2e323f03 FZ |
2065 | static bool scsi_sense_state_needed(void *opaque) |
2066 | { | |
2067 | SCSIDevice *s = opaque; | |
2068 | ||
2069 | return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD; | |
2070 | } | |
2071 | ||
2072 | static const VMStateDescription vmstate_scsi_sense_state = { | |
2073 | .name = "SCSIDevice/sense", | |
2074 | .version_id = 1, | |
2075 | .minimum_version_id = 1, | |
5cd8cada | 2076 | .needed = scsi_sense_state_needed, |
d49805ae | 2077 | .fields = (VMStateField[]) { |
2e323f03 FZ |
2078 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, |
2079 | SCSI_SENSE_BUF_SIZE_OLD, | |
2080 | SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD), | |
2081 | VMSTATE_END_OF_LIST() | |
2082 | } | |
2083 | }; | |
2084 | ||
63f740dd PB |
2085 | const VMStateDescription vmstate_scsi_device = { |
2086 | .name = "SCSIDevice", | |
2087 | .version_id = 1, | |
2088 | .minimum_version_id = 1, | |
63f740dd PB |
2089 | .fields = (VMStateField[]) { |
2090 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
2091 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
2092 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
2093 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
2e323f03 | 2094 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD), |
63f740dd PB |
2095 | VMSTATE_UINT32(sense_len, SCSIDevice), |
2096 | { | |
2097 | .name = "requests", | |
2098 | .version_id = 0, | |
2099 | .field_exists = NULL, | |
2100 | .size = 0, /* ouch */ | |
2101 | .info = &vmstate_info_scsi_requests, | |
2102 | .flags = VMS_SINGLE, | |
2103 | .offset = 0, | |
2104 | }, | |
2105 | VMSTATE_END_OF_LIST() | |
2e323f03 | 2106 | }, |
5cd8cada JQ |
2107 | .subsections = (const VMStateDescription*[]) { |
2108 | &vmstate_scsi_sense_state, | |
2109 | NULL | |
63f740dd PB |
2110 | } |
2111 | }; | |
2112 | ||
39bffca2 AL |
2113 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
2114 | { | |
2115 | DeviceClass *k = DEVICE_CLASS(klass); | |
125ee0ed | 2116 | set_bit(DEVICE_CATEGORY_STORAGE, k->categories); |
a818a4b6 FZ |
2117 | k->bus_type = TYPE_SCSI_BUS; |
2118 | k->realize = scsi_qdev_realize; | |
a818a4b6 FZ |
2119 | k->unrealize = scsi_qdev_unrealize; |
2120 | k->props = scsi_props; | |
39bffca2 AL |
2121 | } |
2122 | ||
44fb6337 GA |
2123 | static void scsi_dev_instance_init(Object *obj) |
2124 | { | |
2125 | DeviceState *dev = DEVICE(obj); | |
e1dc6815 | 2126 | SCSIDevice *s = SCSI_DEVICE(dev); |
44fb6337 GA |
2127 | |
2128 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
2129 | "bootindex", NULL, | |
2130 | &s->qdev, NULL); | |
2131 | } | |
2132 | ||
8c43a6f0 | 2133 | static const TypeInfo scsi_device_type_info = { |
b9eea3e6 AL |
2134 | .name = TYPE_SCSI_DEVICE, |
2135 | .parent = TYPE_DEVICE, | |
2136 | .instance_size = sizeof(SCSIDevice), | |
2137 | .abstract = true, | |
2138 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 2139 | .class_init = scsi_device_class_init, |
44fb6337 | 2140 | .instance_init = scsi_dev_instance_init, |
b9eea3e6 AL |
2141 | }; |
2142 | ||
83f7d43a | 2143 | static void scsi_register_types(void) |
b9eea3e6 | 2144 | { |
0d936928 | 2145 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
2146 | type_register_static(&scsi_device_type_info); |
2147 | } | |
2148 | ||
83f7d43a | 2149 | type_init(scsi_register_types) |