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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" |
0b8fa32f | 5 | #include "qemu/module.h" |
922a01a0 | 6 | #include "qemu/option.h" |
0d09e41a | 7 | #include "hw/scsi/scsi.h" |
08e2c9f1 | 8 | #include "scsi/constants.h" |
83c9f4ca | 9 | #include "hw/qdev.h" |
fa1d36df | 10 | #include "sysemu/block-backend.h" |
9c17d615 | 11 | #include "sysemu/blockdev.h" |
5138efec | 12 | #include "trace.h" |
9c17d615 | 13 | #include "sysemu/dma.h" |
f348b6d1 | 14 | #include "qemu/cutils.h" |
d52affa7 | 15 | |
baa1bd89 | 16 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 17 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
71544d30 | 18 | static void scsi_req_dequeue(SCSIRequest *req); |
84642435 AH |
19 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len); |
20 | static void scsi_target_free_buf(SCSIRequest *req); | |
db07c0f8 | 21 | |
3cb75a7c PB |
22 | static Property scsi_props[] = { |
23 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), | |
24 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
25 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), | |
26 | DEFINE_PROP_END_OF_LIST(), | |
27 | }; | |
28 | ||
0d936928 AL |
29 | static void scsi_bus_class_init(ObjectClass *klass, void *data) |
30 | { | |
31 | BusClass *k = BUS_CLASS(klass); | |
bddd763a | 32 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); |
0d936928 AL |
33 | |
34 | k->get_dev_path = scsibus_get_dev_path; | |
35 | k->get_fw_dev_path = scsibus_get_fw_dev_path; | |
bddd763a | 36 | hc->unplug = qdev_simple_device_unplug_cb; |
0d936928 AL |
37 | } |
38 | ||
39 | static const TypeInfo scsi_bus_info = { | |
40 | .name = TYPE_SCSI_BUS, | |
41 | .parent = TYPE_BUS, | |
42 | .instance_size = sizeof(SCSIBus), | |
43 | .class_init = scsi_bus_class_init, | |
bddd763a IM |
44 | .interfaces = (InterfaceInfo[]) { |
45 | { TYPE_HOTPLUG_HANDLER }, | |
46 | { } | |
47 | } | |
d52affa7 GH |
48 | }; |
49 | static int next_scsi_bus; | |
50 | ||
a818a4b6 | 51 | static void scsi_device_realize(SCSIDevice *s, Error **errp) |
b9eea3e6 AL |
52 | { |
53 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
a818a4b6 FZ |
54 | if (sc->realize) { |
55 | sc->realize(s, errp); | |
b9eea3e6 | 56 | } |
b9eea3e6 AL |
57 | } |
58 | ||
ff34c32c PB |
59 | int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, |
60 | void *hba_private) | |
61 | { | |
62 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
63 | int rc; | |
64 | ||
65 | assert(cmd->len == 0); | |
66 | rc = scsi_req_parse_cdb(dev, cmd, buf); | |
67 | if (bus->info->parse_cdb) { | |
68 | rc = bus->info->parse_cdb(dev, cmd, buf, hba_private); | |
69 | } | |
70 | return rc; | |
71 | } | |
72 | ||
b9eea3e6 AL |
73 | static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun, |
74 | uint8_t *buf, void *hba_private) | |
75 | { | |
76 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
77 | if (sc->alloc_req) { | |
78 | return sc->alloc_req(s, tag, lun, buf, hba_private); | |
79 | } | |
80 | ||
81 | return NULL; | |
82 | } | |
83 | ||
8d72db68 | 84 | void scsi_device_unit_attention_reported(SCSIDevice *s) |
b9eea3e6 AL |
85 | { |
86 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
87 | if (sc->unit_attention_reported) { | |
88 | sc->unit_attention_reported(s); | |
89 | } | |
90 | } | |
91 | ||
d52affa7 | 92 | /* Create a scsi bus, and attach devices to it. */ |
b1187b51 AF |
93 | void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host, |
94 | const SCSIBusInfo *info, const char *bus_name) | |
d52affa7 | 95 | { |
fb17dfe0 | 96 | qbus_create_inplace(bus, bus_size, TYPE_SCSI_BUS, host, bus_name); |
d52affa7 | 97 | bus->busnr = next_scsi_bus++; |
afd4030c | 98 | bus->info = info; |
bddd763a | 99 | qbus_set_bus_hotplug_handler(BUS(bus), &error_abort); |
d52affa7 GH |
100 | } |
101 | ||
71544d30 PB |
102 | static void scsi_dma_restart_bh(void *opaque) |
103 | { | |
104 | SCSIDevice *s = opaque; | |
105 | SCSIRequest *req, *next; | |
106 | ||
107 | qemu_bh_delete(s->bh); | |
108 | s->bh = NULL; | |
109 | ||
1919631e | 110 | aio_context_acquire(blk_get_aio_context(s->conf.blk)); |
71544d30 PB |
111 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { |
112 | scsi_req_ref(req); | |
113 | if (req->retry) { | |
114 | req->retry = false; | |
115 | switch (req->cmd.mode) { | |
116 | case SCSI_XFER_FROM_DEV: | |
117 | case SCSI_XFER_TO_DEV: | |
118 | scsi_req_continue(req); | |
119 | break; | |
120 | case SCSI_XFER_NONE: | |
121 | scsi_req_dequeue(req); | |
122 | scsi_req_enqueue(req); | |
123 | break; | |
124 | } | |
125 | } | |
126 | scsi_req_unref(req); | |
127 | } | |
1919631e | 128 | aio_context_release(blk_get_aio_context(s->conf.blk)); |
71544d30 PB |
129 | } |
130 | ||
131 | void scsi_req_retry(SCSIRequest *req) | |
132 | { | |
133 | /* No need to save a reference, because scsi_dma_restart_bh just | |
134 | * looks at the request list. */ | |
135 | req->retry = true; | |
136 | } | |
137 | ||
138 | static void scsi_dma_restart_cb(void *opaque, int running, RunState state) | |
139 | { | |
140 | SCSIDevice *s = opaque; | |
141 | ||
142 | if (!running) { | |
143 | return; | |
144 | } | |
145 | if (!s->bh) { | |
d223c104 PB |
146 | AioContext *ctx = blk_get_aio_context(s->conf.blk); |
147 | s->bh = aio_bh_new(ctx, scsi_dma_restart_bh, s); | |
71544d30 PB |
148 | qemu_bh_schedule(s->bh); |
149 | } | |
150 | } | |
151 | ||
a818a4b6 | 152 | static void scsi_qdev_realize(DeviceState *qdev, Error **errp) |
d52affa7 | 153 | { |
b9eea3e6 | 154 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
d52affa7 | 155 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
7e0380b9 | 156 | SCSIDevice *d; |
a818a4b6 | 157 | Error *local_err = NULL; |
d52affa7 | 158 | |
0d3545e7 | 159 | if (dev->channel > bus->info->max_channel) { |
a818a4b6 FZ |
160 | error_setg(errp, "bad scsi channel id: %d", dev->channel); |
161 | return; | |
0d3545e7 | 162 | } |
7e0380b9 | 163 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
a818a4b6 FZ |
164 | error_setg(errp, "bad scsi device id: %d", dev->id); |
165 | return; | |
d52affa7 | 166 | } |
d3d250bd | 167 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { |
a818a4b6 FZ |
168 | error_setg(errp, "bad scsi device lun: %d", dev->lun); |
169 | return; | |
d3d250bd | 170 | } |
d52affa7 | 171 | |
7e0380b9 PB |
172 | if (dev->id == -1) { |
173 | int id = -1; | |
174 | if (dev->lun == -1) { | |
175 | dev->lun = 0; | |
176 | } | |
177 | do { | |
0d3545e7 | 178 | d = scsi_device_find(bus, dev->channel, ++id, dev->lun); |
d3d250bd PB |
179 | } while (d && d->lun == dev->lun && id < bus->info->max_target); |
180 | if (d && d->lun == dev->lun) { | |
a818a4b6 FZ |
181 | error_setg(errp, "no free target"); |
182 | return; | |
7e0380b9 PB |
183 | } |
184 | dev->id = id; | |
185 | } else if (dev->lun == -1) { | |
186 | int lun = -1; | |
187 | do { | |
0d3545e7 | 188 | d = scsi_device_find(bus, dev->channel, dev->id, ++lun); |
7e0380b9 | 189 | } while (d && d->lun == lun && lun < bus->info->max_lun); |
d3d250bd | 190 | if (d && d->lun == lun) { |
a818a4b6 FZ |
191 | error_setg(errp, "no free lun"); |
192 | return; | |
7e0380b9 PB |
193 | } |
194 | dev->lun = lun; | |
195 | } else { | |
0d3545e7 | 196 | d = scsi_device_find(bus, dev->channel, dev->id, dev->lun); |
d3d250bd PB |
197 | assert(d); |
198 | if (d->lun == dev->lun && dev != d) { | |
a818a4b6 FZ |
199 | error_setg(errp, "lun already used by '%s'", d->qdev.id); |
200 | return; | |
7e0380b9 | 201 | } |
d52affa7 | 202 | } |
d52affa7 | 203 | |
9af99d98 | 204 | QTAILQ_INIT(&dev->requests); |
a818a4b6 FZ |
205 | scsi_device_realize(dev, &local_err); |
206 | if (local_err) { | |
207 | error_propagate(errp, local_err); | |
208 | return; | |
71544d30 | 209 | } |
a818a4b6 FZ |
210 | dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb, |
211 | dev); | |
01985dcf GH |
212 | } |
213 | ||
a818a4b6 | 214 | static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp) |
01985dcf | 215 | { |
b9eea3e6 | 216 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 217 | |
71544d30 PB |
218 | if (dev->vmsentry) { |
219 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
220 | } | |
fb7b5c0d PB |
221 | |
222 | scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE)); | |
223 | blockdev_mark_auto_del(dev->conf.blk); | |
d52affa7 GH |
224 | } |
225 | ||
d52affa7 | 226 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
4be74634 | 227 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, |
76534da7 | 228 | int unit, bool removable, int bootindex, |
395b9539 | 229 | bool share_rw, |
b8efb36b KW |
230 | BlockdevOnError rerror, |
231 | BlockdevOnError werror, | |
caad4eb3 | 232 | const char *serial, Error **errp) |
d52affa7 GH |
233 | { |
234 | const char *driver; | |
22647504 | 235 | char *name; |
d52affa7 | 236 | DeviceState *dev; |
caad4eb3 | 237 | Error *err = NULL; |
d52affa7 | 238 | |
4be74634 | 239 | driver = blk_is_sg(blk) ? "scsi-generic" : "scsi-disk"; |
d52affa7 | 240 | dev = qdev_create(&bus->qbus, driver); |
22647504 PB |
241 | name = g_strdup_printf("legacy[%d]", unit); |
242 | object_property_add_child(OBJECT(bus), name, OBJECT(dev), NULL); | |
243 | g_free(name); | |
244 | ||
d52affa7 | 245 | qdev_prop_set_uint32(dev, "scsi-id", unit); |
ce4e7e46 | 246 | if (bootindex >= 0) { |
8dece34f GA |
247 | object_property_set_int(OBJECT(dev), bootindex, "bootindex", |
248 | &error_abort); | |
ce4e7e46 | 249 | } |
89bfe000 | 250 | if (object_property_find(OBJECT(dev), "removable", NULL)) { |
2d1fd261 SH |
251 | qdev_prop_set_bit(dev, "removable", removable); |
252 | } | |
c24e7517 | 253 | if (serial && object_property_find(OBJECT(dev), "serial", NULL)) { |
76534da7 KW |
254 | qdev_prop_set_string(dev, "serial", serial); |
255 | } | |
9b3d111a MA |
256 | qdev_prop_set_drive(dev, "drive", blk, &err); |
257 | if (err) { | |
390e90a9 | 258 | error_propagate(errp, err); |
02a5c4c9 | 259 | object_unparent(OBJECT(dev)); |
18846dee MA |
260 | return NULL; |
261 | } | |
395b9539 FZ |
262 | object_property_set_bool(OBJECT(dev), share_rw, "share-rw", &err); |
263 | if (err != NULL) { | |
264 | error_propagate(errp, err); | |
265 | object_unparent(OBJECT(dev)); | |
266 | return NULL; | |
267 | } | |
b8efb36b KW |
268 | |
269 | qdev_prop_set_enum(dev, "rerror", rerror); | |
270 | qdev_prop_set_enum(dev, "werror", werror); | |
271 | ||
caad4eb3 AF |
272 | object_property_set_bool(OBJECT(dev), true, "realized", &err); |
273 | if (err != NULL) { | |
274 | error_propagate(errp, err); | |
02a5c4c9 | 275 | object_unparent(OBJECT(dev)); |
33e66b86 | 276 | return NULL; |
caad4eb3 | 277 | } |
b9eea3e6 | 278 | return SCSI_DEVICE(dev); |
d52affa7 GH |
279 | } |
280 | ||
14545097 | 281 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 282 | { |
42e766a2 | 283 | Location loc; |
d52affa7 | 284 | DriveInfo *dinfo; |
caad4eb3 | 285 | int unit; |
d52affa7 | 286 | |
42e766a2 | 287 | loc_push_none(&loc); |
d3d250bd | 288 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
289 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
290 | if (dinfo == NULL) { | |
291 | continue; | |
292 | } | |
42e766a2 | 293 | qemu_opts_loc_restore(dinfo->opts); |
4be74634 | 294 | scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo), |
b8efb36b KW |
295 | unit, false, -1, false, |
296 | BLOCKDEV_ON_ERROR_AUTO, | |
297 | BLOCKDEV_ON_ERROR_AUTO, | |
298 | NULL, &error_fatal); | |
d52affa7 | 299 | } |
42e766a2 | 300 | loc_pop(&loc); |
d52affa7 | 301 | } |
89b08ae1 | 302 | |
12a08998 PB |
303 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
304 | { | |
305 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
306 | scsi_req_complete(req, CHECK_CONDITION); | |
307 | return 0; | |
308 | } | |
309 | ||
310 | static const struct SCSIReqOps reqops_invalid_field = { | |
311 | .size = sizeof(SCSIRequest), | |
312 | .send_command = scsi_invalid_field | |
313 | }; | |
314 | ||
afa46c46 PB |
315 | /* SCSIReqOps implementation for invalid commands. */ |
316 | ||
317 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
318 | { | |
319 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
320 | scsi_req_complete(req, CHECK_CONDITION); | |
321 | return 0; | |
322 | } | |
323 | ||
adcf2754 | 324 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
325 | .size = sizeof(SCSIRequest), |
326 | .send_command = scsi_invalid_command | |
327 | }; | |
328 | ||
6dc06f08 PB |
329 | /* SCSIReqOps implementation for unit attention conditions. */ |
330 | ||
331 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
332 | { | |
0bf8264e | 333 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { |
6dc06f08 PB |
334 | scsi_req_build_sense(req, req->dev->unit_attention); |
335 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
336 | scsi_req_build_sense(req, req->bus->unit_attention); | |
337 | } | |
338 | scsi_req_complete(req, CHECK_CONDITION); | |
339 | return 0; | |
340 | } | |
341 | ||
adcf2754 | 342 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
343 | .size = sizeof(SCSIRequest), |
344 | .send_command = scsi_unit_attention | |
345 | }; | |
346 | ||
fdaef069 PB |
347 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
348 | an invalid LUN. */ | |
349 | ||
350 | typedef struct SCSITargetReq SCSITargetReq; | |
351 | ||
352 | struct SCSITargetReq { | |
353 | SCSIRequest req; | |
354 | int len; | |
84642435 AH |
355 | uint8_t *buf; |
356 | int buf_len; | |
fdaef069 PB |
357 | }; |
358 | ||
359 | static void store_lun(uint8_t *outbuf, int lun) | |
360 | { | |
361 | if (lun < 256) { | |
362 | outbuf[1] = lun; | |
363 | return; | |
364 | } | |
365 | outbuf[1] = (lun & 255); | |
366 | outbuf[0] = (lun >> 8) | 0x40; | |
367 | } | |
368 | ||
369 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
370 | { | |
0866aca1 | 371 | BusChild *kid; |
ba74307c | 372 | int i, len, n; |
0d3545e7 | 373 | int channel, id; |
ba74307c PB |
374 | bool found_lun0; |
375 | ||
fdaef069 PB |
376 | if (r->req.cmd.xfer < 16) { |
377 | return false; | |
378 | } | |
379 | if (r->req.cmd.buf[2] > 2) { | |
380 | return false; | |
381 | } | |
0d3545e7 | 382 | channel = r->req.dev->channel; |
ba74307c PB |
383 | id = r->req.dev->id; |
384 | found_lun0 = false; | |
385 | n = 0; | |
0866aca1 AL |
386 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
387 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 388 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 389 | |
0d3545e7 | 390 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
391 | if (dev->lun == 0) { |
392 | found_lun0 = true; | |
393 | } | |
394 | n += 8; | |
395 | } | |
396 | } | |
397 | if (!found_lun0) { | |
398 | n += 8; | |
399 | } | |
ba74307c | 400 | |
84642435 AH |
401 | scsi_target_alloc_buf(&r->req, n + 8); |
402 | ||
403 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
fdaef069 | 404 | memset(r->buf, 0, len); |
84642435 | 405 | stl_be_p(&r->buf[0], n); |
ba74307c | 406 | i = found_lun0 ? 8 : 16; |
0866aca1 AL |
407 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
408 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 409 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 410 | |
0d3545e7 | 411 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
412 | store_lun(&r->buf[i], dev->lun); |
413 | i += 8; | |
414 | } | |
fdaef069 | 415 | } |
ba74307c PB |
416 | assert(i == n + 8); |
417 | r->len = len; | |
fdaef069 PB |
418 | return true; |
419 | } | |
420 | ||
421 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
422 | { | |
423 | assert(r->req.dev->lun != r->req.lun); | |
84642435 AH |
424 | |
425 | scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN); | |
426 | ||
fdaef069 PB |
427 | if (r->req.cmd.buf[1] & 0x2) { |
428 | /* Command support data - optional, not implemented */ | |
429 | return false; | |
430 | } | |
431 | ||
432 | if (r->req.cmd.buf[1] & 0x1) { | |
433 | /* Vital product data */ | |
434 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
435 | r->buf[r->len++] = page_code ; /* this page */ |
436 | r->buf[r->len++] = 0x00; | |
437 | ||
438 | switch (page_code) { | |
439 | case 0x00: /* Supported page codes, mandatory */ | |
440 | { | |
441 | int pages; | |
442 | pages = r->len++; | |
443 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
444 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
445 | break; | |
446 | } | |
447 | default: | |
448 | return false; | |
449 | } | |
450 | /* done with EVPD */ | |
84642435 | 451 | assert(r->len < r->buf_len); |
fdaef069 PB |
452 | r->len = MIN(r->req.cmd.xfer, r->len); |
453 | return true; | |
454 | } | |
455 | ||
456 | /* Standard INQUIRY data */ | |
457 | if (r->req.cmd.buf[2] != 0) { | |
458 | return false; | |
459 | } | |
460 | ||
461 | /* PAGE CODE == 0 */ | |
84642435 | 462 | r->len = MIN(r->req.cmd.xfer, SCSI_INQUIRY_LEN); |
fdaef069 PB |
463 | memset(r->buf, 0, r->len); |
464 | if (r->req.lun != 0) { | |
465 | r->buf[0] = TYPE_NO_LUN; | |
466 | } else { | |
467 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
468 | r->buf[2] = 5; /* Version */ | |
469 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
470 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 471 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
472 | memcpy(&r->buf[8], "QEMU ", 8); |
473 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
35c2c8dc | 474 | pstrcpy((char *) &r->buf[32], 4, qemu_hw_version()); |
fdaef069 PB |
475 | } |
476 | return true; | |
477 | } | |
478 | ||
6959e508 JL |
479 | static size_t scsi_sense_len(SCSIRequest *req) |
480 | { | |
481 | if (req->dev->type == TYPE_SCANNER) | |
482 | return SCSI_SENSE_LEN_SCANNER; | |
483 | else | |
484 | return SCSI_SENSE_LEN; | |
485 | } | |
486 | ||
fdaef069 PB |
487 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) |
488 | { | |
489 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
b07fbce6 | 490 | int fixed_sense = (req->cmd.buf[1] & 1) == 0; |
fdaef069 | 491 | |
b07fbce6 HR |
492 | if (req->lun != 0 && |
493 | buf[0] != INQUIRY && buf[0] != REQUEST_SENSE) { | |
ded6ddc5 HR |
494 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); |
495 | scsi_req_complete(req, CHECK_CONDITION); | |
496 | return 0; | |
497 | } | |
fdaef069 PB |
498 | switch (buf[0]) { |
499 | case REPORT_LUNS: | |
500 | if (!scsi_target_emulate_report_luns(r)) { | |
501 | goto illegal_request; | |
502 | } | |
503 | break; | |
504 | case INQUIRY: | |
505 | if (!scsi_target_emulate_inquiry(r)) { | |
506 | goto illegal_request; | |
507 | } | |
508 | break; | |
739df215 | 509 | case REQUEST_SENSE: |
6959e508 | 510 | scsi_target_alloc_buf(&r->req, scsi_sense_len(req)); |
b07fbce6 HR |
511 | if (req->lun != 0) { |
512 | const struct SCSISense sense = SENSE_CODE(LUN_NOT_SUPPORTED); | |
513 | ||
f68d98b2 PB |
514 | r->len = scsi_build_sense_buf(r->buf, req->cmd.xfer, |
515 | sense, fixed_sense); | |
b07fbce6 HR |
516 | } else { |
517 | r->len = scsi_device_get_sense(r->req.dev, r->buf, | |
518 | MIN(req->cmd.xfer, r->buf_len), | |
519 | fixed_sense); | |
520 | } | |
3653d8c4 | 521 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 522 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
523 | r->req.dev->sense_len = 0; |
524 | r->req.dev->sense_is_ua = false; | |
525 | } | |
739df215 | 526 | break; |
1cb27d92 PB |
527 | case TEST_UNIT_READY: |
528 | break; | |
fdaef069 | 529 | default: |
ded6ddc5 | 530 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); |
fdaef069 PB |
531 | scsi_req_complete(req, CHECK_CONDITION); |
532 | return 0; | |
533 | illegal_request: | |
534 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
535 | scsi_req_complete(req, CHECK_CONDITION); | |
536 | return 0; | |
537 | } | |
538 | ||
539 | if (!r->len) { | |
540 | scsi_req_complete(req, GOOD); | |
541 | } | |
542 | return r->len; | |
543 | } | |
544 | ||
545 | static void scsi_target_read_data(SCSIRequest *req) | |
546 | { | |
547 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
548 | uint32_t n; | |
549 | ||
550 | n = r->len; | |
551 | if (n > 0) { | |
552 | r->len = 0; | |
553 | scsi_req_data(&r->req, n); | |
554 | } else { | |
555 | scsi_req_complete(&r->req, GOOD); | |
556 | } | |
557 | } | |
558 | ||
559 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
560 | { | |
561 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
562 | ||
563 | return r->buf; | |
564 | } | |
565 | ||
84642435 AH |
566 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len) |
567 | { | |
568 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
569 | ||
570 | r->buf = g_malloc(len); | |
571 | r->buf_len = len; | |
572 | ||
573 | return r->buf; | |
574 | } | |
575 | ||
576 | static void scsi_target_free_buf(SCSIRequest *req) | |
577 | { | |
578 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
579 | ||
580 | g_free(r->buf); | |
581 | } | |
582 | ||
adcf2754 | 583 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
584 | .size = sizeof(SCSITargetReq), |
585 | .send_command = scsi_target_send_command, | |
586 | .read_data = scsi_target_read_data, | |
587 | .get_buf = scsi_target_get_buf, | |
84642435 | 588 | .free_req = scsi_target_free_buf, |
fdaef069 PB |
589 | }; |
590 | ||
591 | ||
adcf2754 PB |
592 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
593 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
594 | { |
595 | SCSIRequest *req; | |
cac3c384 PB |
596 | SCSIBus *bus = scsi_bus_from_device(d); |
597 | BusState *qbus = BUS(bus); | |
61e68b3f FZ |
598 | const int memset_off = offsetof(SCSIRequest, sense) |
599 | + sizeof(req->sense); | |
89b08ae1 | 600 | |
633dccb4 | 601 | req = g_malloc(reqops->size); |
61e68b3f | 602 | memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off); |
5c6c0e51 | 603 | req->refcount = 1; |
cac3c384 | 604 | req->bus = bus; |
89b08ae1 GH |
605 | req->dev = d; |
606 | req->tag = tag; | |
607 | req->lun = lun; | |
c5bf71a9 | 608 | req->hba_private = hba_private; |
ed3a34a3 | 609 | req->status = -1; |
8dbd4574 | 610 | req->ops = reqops; |
cac3c384 PB |
611 | object_ref(OBJECT(d)); |
612 | object_ref(OBJECT(qbus->parent)); | |
8e0a9320 | 613 | notifier_list_init(&req->cancel_notifiers); |
5138efec | 614 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
615 | return req; |
616 | } | |
617 | ||
c5bf71a9 | 618 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 619 | uint8_t *buf, void *hba_private) |
43a2b339 | 620 | { |
6dc06f08 | 621 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
769998a1 | 622 | const SCSIReqOps *ops; |
ff34c32c | 623 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d); |
c39ce112 | 624 | SCSIRequest *req; |
769998a1 PB |
625 | SCSICommand cmd = { .len = 0 }; |
626 | int ret; | |
627 | ||
628 | if ((d->unit_attention.key == UNIT_ATTENTION || | |
629 | bus->unit_attention.key == UNIT_ATTENTION) && | |
630 | (buf[0] != INQUIRY && | |
631 | buf[0] != REPORT_LUNS && | |
632 | buf[0] != GET_CONFIGURATION && | |
633 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
634 | ||
635 | /* | |
636 | * If we already have a pending unit attention condition, | |
637 | * report this one before triggering another one. | |
638 | */ | |
639 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
640 | ops = &reqops_unit_attention; | |
641 | } else if (lun != d->lun || | |
642 | buf[0] == REPORT_LUNS || | |
643 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
644 | ops = &reqops_target_command; | |
645 | } else { | |
646 | ops = NULL; | |
647 | } | |
afa46c46 | 648 | |
ff34c32c PB |
649 | if (ops != NULL || !sc->parse_cdb) { |
650 | ret = scsi_req_parse_cdb(d, &cmd, buf); | |
651 | } else { | |
652 | ret = sc->parse_cdb(d, &cmd, buf, hba_private); | |
653 | } | |
654 | ||
769998a1 | 655 | if (ret != 0) { |
afa46c46 PB |
656 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); |
657 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
658 | } else { | |
769998a1 | 659 | assert(cmd.len != 0); |
afa46c46 PB |
660 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], |
661 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 662 | if (cmd.lba != -1) { |
afa46c46 PB |
663 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
664 | cmd.lba); | |
665 | } | |
fdaef069 | 666 | |
12a08998 PB |
667 | if (cmd.xfer > INT32_MAX) { |
668 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
769998a1 PB |
669 | } else if (ops) { |
670 | req = scsi_req_alloc(ops, d, tag, lun, hba_private); | |
fdaef069 | 671 | } else { |
b9eea3e6 | 672 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 673 | } |
afa46c46 PB |
674 | } |
675 | ||
676 | req->cmd = cmd; | |
01e95455 PB |
677 | req->resid = req->cmd.xfer; |
678 | ||
98254542 PB |
679 | switch (buf[0]) { |
680 | case INQUIRY: | |
681 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
682 | break; | |
683 | case TEST_UNIT_READY: | |
684 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
685 | break; | |
686 | case REPORT_LUNS: | |
687 | trace_scsi_report_luns(d->id, lun, tag); | |
688 | break; | |
689 | case REQUEST_SENSE: | |
690 | trace_scsi_request_sense(d->id, lun, tag); | |
691 | break; | |
692 | default: | |
693 | break; | |
694 | } | |
695 | ||
c39ce112 | 696 | return req; |
43a2b339 PB |
697 | } |
698 | ||
0c34459b PB |
699 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
700 | { | |
12010e7b | 701 | return req->ops->get_buf(req); |
0c34459b PB |
702 | } |
703 | ||
6dc06f08 PB |
704 | static void scsi_clear_unit_attention(SCSIRequest *req) |
705 | { | |
706 | SCSISense *ua; | |
707 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
708 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
709 | return; | |
710 | } | |
711 | ||
712 | /* | |
713 | * If an INQUIRY command enters the enabled command state, | |
714 | * the device server shall [not] clear any unit attention condition; | |
715 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
716 | */ | |
717 | if (req->cmd.buf[0] == INQUIRY || | |
718 | req->cmd.buf[0] == GET_CONFIGURATION || | |
719 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
720 | return; | |
721 | } | |
722 | ||
723 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
724 | ua = &req->dev->unit_attention; | |
725 | } else { | |
726 | ua = &req->bus->unit_attention; | |
727 | } | |
728 | ||
729 | /* | |
730 | * If a REPORT LUNS command enters the enabled command state, [...] | |
731 | * the device server shall clear any pending unit attention condition | |
732 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
733 | */ | |
734 | if (req->cmd.buf[0] == REPORT_LUNS && | |
735 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
736 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
737 | return; | |
738 | } | |
739 | ||
740 | *ua = SENSE_CODE(NO_SENSE); | |
741 | } | |
742 | ||
74382217 HR |
743 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
744 | { | |
6dc06f08 PB |
745 | int ret; |
746 | ||
b45ef674 PB |
747 | assert(len >= 14); |
748 | if (!req->sense_len) { | |
74382217 HR |
749 | return 0; |
750 | } | |
6dc06f08 | 751 | |
37b6045c | 752 | ret = scsi_convert_sense(req->sense, req->sense_len, buf, len, true); |
6dc06f08 PB |
753 | |
754 | /* | |
755 | * FIXME: clearing unit attention conditions upon autosense should be done | |
756 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
757 | * (SAM-5, 5.14). | |
758 | * | |
759 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
760 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 761 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 762 | */ |
3653d8c4 | 763 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 764 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
765 | req->dev->sense_len = 0; |
766 | req->dev->sense_is_ua = false; | |
767 | } | |
6dc06f08 | 768 | return ret; |
b45ef674 PB |
769 | } |
770 | ||
771 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
772 | { | |
37b6045c | 773 | return scsi_convert_sense(dev->sense, dev->sense_len, buf, len, fixed); |
b45ef674 PB |
774 | } |
775 | ||
776 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
777 | { | |
778 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
779 | sense.key, sense.asc, sense.ascq); | |
a3760467 | 780 | req->sense_len = scsi_build_sense(req->sense, sense); |
74382217 HR |
781 | } |
782 | ||
63f740dd | 783 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 784 | { |
5c6c0e51 HR |
785 | assert(!req->enqueued); |
786 | scsi_req_ref(req); | |
3d5aba97 PB |
787 | if (req->bus->info->get_sg_list) { |
788 | req->sg = req->bus->info->get_sg_list(req); | |
789 | } else { | |
790 | req->sg = NULL; | |
791 | } | |
5c6c0e51 HR |
792 | req->enqueued = true; |
793 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 794 | } |
fc4f0754 | 795 | |
63f740dd PB |
796 | int32_t scsi_req_enqueue(SCSIRequest *req) |
797 | { | |
798 | int32_t rc; | |
799 | ||
800 | assert(!req->retry); | |
801 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 802 | scsi_req_ref(req); |
c39ce112 | 803 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
804 | scsi_req_unref(req); |
805 | return rc; | |
89b08ae1 GH |
806 | } |
807 | ||
a1f0cce2 | 808 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 809 | { |
5138efec | 810 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 811 | req->retry = false; |
e8637c90 JK |
812 | if (req->enqueued) { |
813 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
814 | req->enqueued = false; | |
ad2d30f7 | 815 | scsi_req_unref(req); |
e8637c90 JK |
816 | } |
817 | } | |
818 | ||
06b86357 PB |
819 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
820 | { | |
821 | /* MMC-6, paragraph 6.7. */ | |
822 | switch (type) { | |
823 | case 0: | |
824 | if ((data_type & 3) == 0) { | |
825 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
826 | return 16 * num_desc + 8; | |
827 | } else { | |
828 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
829 | return 6 * num_desc + 8; | |
830 | } | |
831 | case 1: | |
832 | case 4: | |
833 | case 5: | |
834 | return 8 * num_desc + 8; | |
835 | case 2: | |
836 | return 2048 * num_desc + 8; | |
837 | case 3: | |
838 | return 16 * num_desc + 8; | |
839 | default: | |
840 | return 8; | |
841 | } | |
842 | } | |
843 | ||
e4b65262 CM |
844 | static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf) |
845 | { | |
846 | int byte_block = (buf[2] >> 2) & 0x1; | |
847 | int type = (buf[2] >> 4) & 0x1; | |
848 | int xfer_unit; | |
849 | ||
850 | if (byte_block) { | |
851 | if (type) { | |
852 | xfer_unit = dev->blocksize; | |
853 | } else { | |
854 | xfer_unit = 512; | |
855 | } | |
856 | } else { | |
857 | xfer_unit = 1; | |
858 | } | |
859 | ||
860 | return xfer_unit; | |
861 | } | |
862 | ||
1894df02 | 863 | static int ata_passthrough_12_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
864 | { |
865 | int length = buf[2] & 0x3; | |
866 | int xfer; | |
867 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
868 | ||
869 | switch (length) { | |
870 | case 0: | |
871 | case 3: /* USB-specific. */ | |
d83c951c | 872 | default: |
e4b65262 CM |
873 | xfer = 0; |
874 | break; | |
875 | case 1: | |
876 | xfer = buf[3]; | |
877 | break; | |
878 | case 2: | |
879 | xfer = buf[4]; | |
880 | break; | |
881 | } | |
882 | ||
883 | return xfer * unit; | |
884 | } | |
885 | ||
1894df02 | 886 | static int ata_passthrough_16_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
887 | { |
888 | int extend = buf[1] & 0x1; | |
889 | int length = buf[2] & 0x3; | |
890 | int xfer; | |
891 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
892 | ||
893 | switch (length) { | |
894 | case 0: | |
895 | case 3: /* USB-specific. */ | |
d83c951c | 896 | default: |
e4b65262 CM |
897 | xfer = 0; |
898 | break; | |
899 | case 1: | |
900 | xfer = buf[4]; | |
901 | xfer |= (extend ? buf[3] << 8 : 0); | |
902 | break; | |
903 | case 2: | |
904 | xfer = buf[6]; | |
905 | xfer |= (extend ? buf[5] << 8 : 0); | |
906 | break; | |
907 | } | |
908 | ||
909 | return xfer * unit; | |
910 | } | |
911 | ||
1894df02 | 912 | static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
bb729f75 | 913 | { |
1894df02 | 914 | cmd->xfer = scsi_cdb_xfer(buf); |
2599aece | 915 | switch (buf[0]) { |
2ec749cb | 916 | case TEST_UNIT_READY: |
5e30a07d | 917 | case REWIND: |
2ec749cb | 918 | case START_STOP: |
00a01ad4 | 919 | case SET_CAPACITY: |
2ec749cb | 920 | case WRITE_FILEMARKS: |
06b86357 | 921 | case WRITE_FILEMARKS_16: |
2ec749cb | 922 | case SPACE: |
a5e3d9ef BK |
923 | case RESERVE: |
924 | case RELEASE: | |
2ec749cb GH |
925 | case ERASE: |
926 | case ALLOW_MEDIUM_REMOVAL: | |
2ec749cb GH |
927 | case SEEK_10: |
928 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
929 | case SYNCHRONIZE_CACHE_16: |
930 | case LOCATE_16: | |
2ec749cb | 931 | case LOCK_UNLOCK_CACHE: |
2ec749cb GH |
932 | case SET_CD_SPEED: |
933 | case SET_LIMITS: | |
5e30a07d | 934 | case WRITE_LONG_10: |
2ec749cb | 935 | case UPDATE_BLOCK: |
06b86357 PB |
936 | case RESERVE_TRACK: |
937 | case SET_READ_AHEAD: | |
938 | case PRE_FETCH: | |
939 | case PRE_FETCH_16: | |
940 | case ALLOW_OVERWRITE: | |
2599aece | 941 | cmd->xfer = 0; |
2ec749cb | 942 | break; |
d12ad44c PB |
943 | case VERIFY_10: |
944 | case VERIFY_12: | |
945 | case VERIFY_16: | |
946 | if ((buf[1] & 2) == 0) { | |
947 | cmd->xfer = 0; | |
7ef8cf9a | 948 | } else if ((buf[1] & 4) != 0) { |
d12ad44c PB |
949 | cmd->xfer = 1; |
950 | } | |
951 | cmd->xfer *= dev->blocksize; | |
952 | break; | |
2ec749cb GH |
953 | case MODE_SENSE: |
954 | break; | |
5e30a07d | 955 | case WRITE_SAME_10: |
a5ee9085 | 956 | case WRITE_SAME_16: |
4397a018 | 957 | cmd->xfer = buf[1] & 1 ? 0 : dev->blocksize; |
2ec749cb | 958 | break; |
5e30a07d | 959 | case READ_CAPACITY_10: |
2599aece | 960 | cmd->xfer = 8; |
2ec749cb GH |
961 | break; |
962 | case READ_BLOCK_LIMITS: | |
2599aece | 963 | cmd->xfer = 6; |
2ec749cb | 964 | break; |
2ec749cb | 965 | case SEND_VOLUME_TAG: |
06b86357 PB |
966 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
967 | if (dev->type == TYPE_ROM) { | |
968 | cmd->xfer = buf[10] | (buf[9] << 8); | |
969 | } else { | |
970 | cmd->xfer = buf[9] | (buf[8] << 8); | |
971 | } | |
2ec749cb | 972 | break; |
f62d0594 PB |
973 | case WRITE_6: |
974 | /* length 0 means 256 blocks */ | |
975 | if (cmd->xfer == 0) { | |
976 | cmd->xfer = 256; | |
977 | } | |
c4ce4c4b | 978 | /* fall through */ |
2ec749cb | 979 | case WRITE_10: |
5e30a07d | 980 | case WRITE_VERIFY_10: |
2ec749cb GH |
981 | case WRITE_12: |
982 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
983 | case WRITE_16: |
984 | case WRITE_VERIFY_16: | |
2599aece | 985 | cmd->xfer *= dev->blocksize; |
2ec749cb | 986 | break; |
2ec749cb GH |
987 | case READ_6: |
988 | case READ_REVERSE: | |
f62d0594 PB |
989 | /* length 0 means 256 blocks */ |
990 | if (cmd->xfer == 0) { | |
991 | cmd->xfer = 256; | |
992 | } | |
c4ce4c4b | 993 | /* fall through */ |
f62d0594 | 994 | case READ_10: |
2ec749cb | 995 | case READ_12: |
bd536cf3 | 996 | case READ_16: |
2599aece | 997 | cmd->xfer *= dev->blocksize; |
2ec749cb | 998 | break; |
06b86357 PB |
999 | case FORMAT_UNIT: |
1000 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
1001 | * for block devices are restricted to the header right now. */ | |
1002 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
1003 | cmd->xfer = 12; | |
1004 | } else { | |
1005 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
1006 | } | |
1007 | break; | |
2ec749cb | 1008 | case INQUIRY: |
06b86357 PB |
1009 | case RECEIVE_DIAGNOSTIC: |
1010 | case SEND_DIAGNOSTIC: | |
2599aece | 1011 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 1012 | break; |
06b86357 PB |
1013 | case READ_CD: |
1014 | case READ_BUFFER: | |
1015 | case WRITE_BUFFER: | |
1016 | case SEND_CUE_SHEET: | |
1017 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1018 | break; | |
1019 | case PERSISTENT_RESERVE_OUT: | |
1020 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
1021 | break; | |
1022 | case ERASE_12: | |
1023 | if (dev->type == TYPE_ROM) { | |
1024 | /* MMC command GET PERFORMANCE. */ | |
1025 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
1026 | buf[10], buf[1] & 0x1f); | |
1027 | } | |
1028 | break; | |
1029 | case MECHANISM_STATUS: | |
1030 | case READ_DVD_STRUCTURE: | |
1031 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
1032 | case MAINTENANCE_OUT: |
1033 | case MAINTENANCE_IN: | |
2599aece | 1034 | if (dev->type == TYPE_ROM) { |
c7126d5b | 1035 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 1036 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
1037 | } |
1038 | break; | |
e4b65262 CM |
1039 | case ATA_PASSTHROUGH_12: |
1040 | if (dev->type == TYPE_ROM) { | |
1041 | /* BLANK command of MMC */ | |
1042 | cmd->xfer = 0; | |
1043 | } else { | |
1894df02 | 1044 | cmd->xfer = ata_passthrough_12_xfer(dev, buf); |
e4b65262 CM |
1045 | } |
1046 | break; | |
1047 | case ATA_PASSTHROUGH_16: | |
1894df02 | 1048 | cmd->xfer = ata_passthrough_16_xfer(dev, buf); |
e4b65262 | 1049 | break; |
2ec749cb GH |
1050 | } |
1051 | return 0; | |
1052 | } | |
1053 | ||
1894df02 | 1054 | static int scsi_req_stream_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 1055 | { |
2599aece | 1056 | switch (buf[0]) { |
2ec749cb | 1057 | /* stream commands */ |
06b86357 PB |
1058 | case ERASE_12: |
1059 | case ERASE_16: | |
1060 | cmd->xfer = 0; | |
1061 | break; | |
2ec749cb GH |
1062 | case READ_6: |
1063 | case READ_REVERSE: | |
1064 | case RECOVER_BUFFERED_DATA: | |
1065 | case WRITE_6: | |
2599aece PB |
1066 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); |
1067 | if (buf[1] & 0x01) { /* fixed */ | |
1068 | cmd->xfer *= dev->blocksize; | |
1069 | } | |
2ec749cb | 1070 | break; |
065c2599 PB |
1071 | case READ_16: |
1072 | case READ_REVERSE_16: | |
1073 | case VERIFY_16: | |
1074 | case WRITE_16: | |
065c2599 PB |
1075 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); |
1076 | if (buf[1] & 0x01) { /* fixed */ | |
1077 | cmd->xfer *= dev->blocksize; | |
1078 | } | |
1079 | break; | |
2ec749cb | 1080 | case REWIND: |
15e58a21 | 1081 | case LOAD_UNLOAD: |
2599aece | 1082 | cmd->xfer = 0; |
2ec749cb | 1083 | break; |
06b86357 PB |
1084 | case SPACE_16: |
1085 | cmd->xfer = buf[13] | (buf[12] << 8); | |
1086 | break; | |
1087 | case READ_POSITION: | |
9ce1bb2d CH |
1088 | switch (buf[1] & 0x1f) /* operation code */ { |
1089 | case SHORT_FORM_BLOCK_ID: | |
1090 | case SHORT_FORM_VENDOR_SPECIFIC: | |
1091 | cmd->xfer = 20; | |
1092 | break; | |
1093 | case LONG_FORM: | |
1094 | cmd->xfer = 32; | |
1095 | break; | |
1096 | case EXTENDED_FORM: | |
1097 | cmd->xfer = buf[8] | (buf[7] << 8); | |
1098 | break; | |
1099 | default: | |
1100 | return -1; | |
1101 | } | |
1102 | ||
06b86357 PB |
1103 | break; |
1104 | case FORMAT_UNIT: | |
1105 | cmd->xfer = buf[4] | (buf[3] << 8); | |
1106 | break; | |
2ec749cb GH |
1107 | /* generic commands */ |
1108 | default: | |
1894df02 | 1109 | return scsi_req_xfer(cmd, dev, buf); |
2ec749cb GH |
1110 | } |
1111 | return 0; | |
1112 | } | |
1113 | ||
1894df02 | 1114 | static int scsi_req_medium_changer_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
40723a99 CH |
1115 | { |
1116 | switch (buf[0]) { | |
1117 | /* medium changer commands */ | |
1118 | case EXCHANGE_MEDIUM: | |
1119 | case INITIALIZE_ELEMENT_STATUS: | |
1120 | case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: | |
1121 | case MOVE_MEDIUM: | |
1122 | case POSITION_TO_ELEMENT: | |
1123 | cmd->xfer = 0; | |
1124 | break; | |
1125 | case READ_ELEMENT_STATUS: | |
1126 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); | |
1127 | break; | |
1128 | ||
1129 | /* generic commands */ | |
1130 | default: | |
1894df02 | 1131 | return scsi_req_xfer(cmd, dev, buf); |
40723a99 CH |
1132 | } |
1133 | return 0; | |
1134 | } | |
1135 | ||
297b044a JL |
1136 | static int scsi_req_scanner_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
1137 | { | |
1138 | switch (buf[0]) { | |
1139 | /* Scanner commands */ | |
1140 | case OBJECT_POSITION: | |
1141 | cmd->xfer = 0; | |
1142 | break; | |
1143 | case SCAN: | |
1144 | cmd->xfer = buf[4]; | |
1145 | break; | |
1146 | case READ_10: | |
1147 | case SEND: | |
1148 | case GET_WINDOW: | |
1149 | case SET_WINDOW: | |
1150 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1151 | break; | |
1152 | default: | |
1153 | /* GET_DATA_BUFFER_STATUS xfer handled by scsi_req_xfer */ | |
1154 | return scsi_req_xfer(cmd, dev, buf); | |
1155 | } | |
1156 | ||
1157 | return 0; | |
1158 | } | |
40723a99 | 1159 | |
2599aece | 1160 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 1161 | { |
a5ee9085 PB |
1162 | if (!cmd->xfer) { |
1163 | cmd->mode = SCSI_XFER_NONE; | |
1164 | return; | |
1165 | } | |
2599aece | 1166 | switch (cmd->buf[0]) { |
97a06435 GH |
1167 | case WRITE_6: |
1168 | case WRITE_10: | |
5e30a07d | 1169 | case WRITE_VERIFY_10: |
97a06435 GH |
1170 | case WRITE_12: |
1171 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1172 | case WRITE_16: |
1173 | case WRITE_VERIFY_16: | |
d12ad44c PB |
1174 | case VERIFY_10: |
1175 | case VERIFY_12: | |
1176 | case VERIFY_16: | |
97a06435 GH |
1177 | case COPY: |
1178 | case COPY_VERIFY: | |
1179 | case COMPARE: | |
1180 | case CHANGE_DEFINITION: | |
1181 | case LOG_SELECT: | |
1182 | case MODE_SELECT: | |
1183 | case MODE_SELECT_10: | |
1184 | case SEND_DIAGNOSTIC: | |
1185 | case WRITE_BUFFER: | |
1186 | case FORMAT_UNIT: | |
1187 | case REASSIGN_BLOCKS: | |
97a06435 GH |
1188 | case SEARCH_EQUAL: |
1189 | case SEARCH_HIGH: | |
1190 | case SEARCH_LOW: | |
1191 | case UPDATE_BLOCK: | |
5e30a07d HR |
1192 | case WRITE_LONG_10: |
1193 | case WRITE_SAME_10: | |
a5ee9085 | 1194 | case WRITE_SAME_16: |
381b634c | 1195 | case UNMAP: |
97a06435 GH |
1196 | case SEARCH_HIGH_12: |
1197 | case SEARCH_EQUAL_12: | |
1198 | case SEARCH_LOW_12: | |
97a06435 GH |
1199 | case MEDIUM_SCAN: |
1200 | case SEND_VOLUME_TAG: | |
06b86357 PB |
1201 | case SEND_CUE_SHEET: |
1202 | case SEND_DVD_STRUCTURE: | |
01bedeba | 1203 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 1204 | case MAINTENANCE_OUT: |
297b044a JL |
1205 | case SET_WINDOW: |
1206 | case SCAN: | |
1207 | /* SCAN conflicts with START_STOP. START_STOP has cmd->xfer set to 0 for | |
1208 | * non-scanner devices, so we only get here for SCAN and not for START_STOP. | |
1209 | */ | |
2599aece | 1210 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 | 1211 | break; |
e4b65262 CM |
1212 | case ATA_PASSTHROUGH_12: |
1213 | case ATA_PASSTHROUGH_16: | |
1214 | /* T_DIR */ | |
1215 | cmd->mode = (cmd->buf[2] & 0x8) ? | |
1216 | SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV; | |
1217 | break; | |
97a06435 | 1218 | default: |
a5ee9085 | 1219 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
1220 | break; |
1221 | } | |
1222 | } | |
1223 | ||
1894df02 HR |
1224 | int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf) |
1225 | { | |
1226 | int rc; | |
c170aad8 | 1227 | int len; |
1894df02 HR |
1228 | |
1229 | cmd->lba = -1; | |
c170aad8 PB |
1230 | len = scsi_cdb_length(buf); |
1231 | if (len < 0) { | |
1232 | return -1; | |
1233 | } | |
28b70c9d | 1234 | |
c170aad8 | 1235 | cmd->len = len; |
40723a99 CH |
1236 | switch (dev->type) { |
1237 | case TYPE_TAPE: | |
1894df02 | 1238 | rc = scsi_req_stream_xfer(cmd, dev, buf); |
40723a99 CH |
1239 | break; |
1240 | case TYPE_MEDIUM_CHANGER: | |
1894df02 | 1241 | rc = scsi_req_medium_changer_xfer(cmd, dev, buf); |
40723a99 | 1242 | break; |
297b044a JL |
1243 | case TYPE_SCANNER: |
1244 | rc = scsi_req_scanner_length(cmd, dev, buf); | |
1245 | break; | |
40723a99 | 1246 | default: |
1894df02 | 1247 | rc = scsi_req_xfer(cmd, dev, buf); |
40723a99 | 1248 | break; |
2ec749cb | 1249 | } |
40723a99 | 1250 | |
2ec749cb GH |
1251 | if (rc != 0) |
1252 | return rc; | |
1253 | ||
afa46c46 PB |
1254 | memcpy(cmd->buf, buf, cmd->len); |
1255 | scsi_cmd_xfer_mode(cmd); | |
1256 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1257 | return 0; |
1258 | } | |
ed3a34a3 | 1259 | |
53200fad PB |
1260 | void scsi_device_report_change(SCSIDevice *dev, SCSISense sense) |
1261 | { | |
1262 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1263 | ||
1264 | scsi_device_set_ua(dev, sense); | |
1265 | if (bus->info->change) { | |
1266 | bus->info->change(bus, dev, sense); | |
1267 | } | |
1268 | } | |
1269 | ||
ad2d30f7 PB |
1270 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1271 | { | |
8e86b93c | 1272 | assert(req->refcount > 0); |
ad2d30f7 PB |
1273 | req->refcount++; |
1274 | return req; | |
1275 | } | |
1276 | ||
1277 | void scsi_req_unref(SCSIRequest *req) | |
1278 | { | |
68bd348a | 1279 | assert(req->refcount > 0); |
ad2d30f7 | 1280 | if (--req->refcount == 0) { |
cac3c384 PB |
1281 | BusState *qbus = req->dev->qdev.parent_bus; |
1282 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus); | |
1283 | ||
8e86b93c PB |
1284 | if (bus->info->free_request && req->hba_private) { |
1285 | bus->info->free_request(bus, req->hba_private); | |
1286 | } | |
12010e7b PB |
1287 | if (req->ops->free_req) { |
1288 | req->ops->free_req(req); | |
ad2d30f7 | 1289 | } |
cac3c384 PB |
1290 | object_unref(OBJECT(req->dev)); |
1291 | object_unref(OBJECT(qbus->parent)); | |
633dccb4 | 1292 | g_free(req); |
ad2d30f7 PB |
1293 | } |
1294 | } | |
1295 | ||
ad3376cc PB |
1296 | /* Tell the device that we finished processing this chunk of I/O. It |
1297 | will start the next chunk or complete the command. */ | |
1298 | void scsi_req_continue(SCSIRequest *req) | |
1299 | { | |
6f6710aa PB |
1300 | if (req->io_canceled) { |
1301 | trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); | |
1302 | return; | |
1303 | } | |
ad3376cc PB |
1304 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
1305 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1306 | req->ops->write_data(req); |
ad3376cc | 1307 | } else { |
12010e7b | 1308 | req->ops->read_data(req); |
ad3376cc PB |
1309 | } |
1310 | } | |
1311 | ||
ab9adc88 PB |
1312 | /* Called by the devices when data is ready for the HBA. The HBA should |
1313 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1314 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1315 | void scsi_req_data(SCSIRequest *req, int len) |
1316 | { | |
3d5aba97 | 1317 | uint8_t *buf; |
e88c591d PB |
1318 | if (req->io_canceled) { |
1319 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1320 | return; |
e88c591d | 1321 | } |
01e95455 PB |
1322 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1323 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1324 | if (!req->sg) { |
1325 | req->resid -= len; | |
1326 | req->bus->info->transfer_data(req, len); | |
1327 | return; | |
1328 | } | |
1329 | ||
1330 | /* If the device calls scsi_req_data and the HBA specified a | |
1331 | * scatter/gather list, the transfer has to happen in a single | |
1332 | * step. */ | |
1333 | assert(!req->dma_started); | |
1334 | req->dma_started = true; | |
1335 | ||
1336 | buf = scsi_req_get_buf(req); | |
1337 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1338 | req->resid = dma_buf_read(buf, len, req->sg); | |
1339 | } else { | |
1340 | req->resid = dma_buf_write(buf, len, req->sg); | |
1341 | } | |
1342 | scsi_req_continue(req); | |
ab9adc88 PB |
1343 | } |
1344 | ||
ec766865 GH |
1345 | void scsi_req_print(SCSIRequest *req) |
1346 | { | |
1347 | FILE *fp = stderr; | |
1348 | int i; | |
1349 | ||
1350 | fprintf(fp, "[%s id=%d] %s", | |
1351 | req->dev->qdev.parent_bus->name, | |
1352 | req->dev->id, | |
1353 | scsi_command_name(req->cmd.buf[0])); | |
1354 | for (i = 1; i < req->cmd.len; i++) { | |
1355 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1356 | } | |
1357 | switch (req->cmd.mode) { | |
1358 | case SCSI_XFER_NONE: | |
1359 | fprintf(fp, " - none\n"); | |
1360 | break; | |
1361 | case SCSI_XFER_FROM_DEV: | |
1362 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1363 | break; | |
1364 | case SCSI_XFER_TO_DEV: | |
1365 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1366 | break; | |
1367 | default: | |
1368 | fprintf(fp, " - Oops\n"); | |
1369 | break; | |
1370 | } | |
1371 | } | |
1372 | ||
682a9b21 | 1373 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1374 | { |
682a9b21 PB |
1375 | assert(req->status == -1); |
1376 | req->status = status; | |
b45ef674 | 1377 | |
335f560f | 1378 | assert(req->sense_len <= sizeof(req->sense)); |
b45ef674 PB |
1379 | if (status == GOOD) { |
1380 | req->sense_len = 0; | |
1381 | } | |
1382 | ||
1383 | if (req->sense_len) { | |
1384 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1385 | req->dev->sense_len = req->sense_len; |
1386 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1387 | } else { | |
1388 | req->dev->sense_len = 0; | |
1389 | req->dev->sense_is_ua = false; | |
b45ef674 | 1390 | } |
b45ef674 | 1391 | |
6dc06f08 PB |
1392 | /* |
1393 | * Unit attention state is now stored in the device's sense buffer | |
1394 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1395 | * flags. | |
1396 | */ | |
1397 | scsi_clear_unit_attention(req); | |
1398 | ||
ad2d30f7 | 1399 | scsi_req_ref(req); |
e8637c90 | 1400 | scsi_req_dequeue(req); |
01e95455 | 1401 | req->bus->info->complete(req, req->status, req->resid); |
8e0a9320 FZ |
1402 | |
1403 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1404 | notifier_list_notify(&req->cancel_notifiers, req); | |
ad2d30f7 | 1405 | scsi_req_unref(req); |
ed3a34a3 | 1406 | } |
db07c0f8 | 1407 | |
d5776465 FZ |
1408 | /* Called by the devices when the request is canceled. */ |
1409 | void scsi_req_cancel_complete(SCSIRequest *req) | |
1410 | { | |
1411 | assert(req->io_canceled); | |
1412 | if (req->bus->info->cancel) { | |
1413 | req->bus->info->cancel(req); | |
1414 | } | |
8e0a9320 | 1415 | notifier_list_notify(&req->cancel_notifiers, req); |
d5776465 FZ |
1416 | scsi_req_unref(req); |
1417 | } | |
1418 | ||
8e0a9320 FZ |
1419 | /* Cancel @req asynchronously. @notifier is added to @req's cancellation |
1420 | * notifier list, the bus will be notified the requests cancellation is | |
1421 | * completed. | |
1422 | * */ | |
1423 | void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier) | |
1424 | { | |
1425 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); | |
1426 | if (notifier) { | |
1427 | notifier_list_add(&req->cancel_notifiers, notifier); | |
1428 | } | |
3daa4107 PB |
1429 | if (req->io_canceled) { |
1430 | /* A blk_aio_cancel_async is pending; when it finishes, | |
1431 | * scsi_req_cancel_complete will be called and will | |
1432 | * call the notifier we just added. Just wait for that. | |
1433 | */ | |
1434 | assert(req->aiocb); | |
1435 | return; | |
1436 | } | |
1437 | /* Dropped in scsi_req_cancel_complete. */ | |
8e0a9320 FZ |
1438 | scsi_req_ref(req); |
1439 | scsi_req_dequeue(req); | |
1440 | req->io_canceled = true; | |
1441 | if (req->aiocb) { | |
4be74634 | 1442 | blk_aio_cancel_async(req->aiocb); |
2aeba9d8 FZ |
1443 | } else { |
1444 | scsi_req_cancel_complete(req); | |
8e0a9320 FZ |
1445 | } |
1446 | } | |
1447 | ||
94d3f98a PB |
1448 | void scsi_req_cancel(SCSIRequest *req) |
1449 | { | |
814589c4 | 1450 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); |
e88c591d PB |
1451 | if (!req->enqueued) { |
1452 | return; | |
94d3f98a | 1453 | } |
3daa4107 PB |
1454 | assert(!req->io_canceled); |
1455 | /* Dropped in scsi_req_cancel_complete. */ | |
94d3f98a PB |
1456 | scsi_req_ref(req); |
1457 | scsi_req_dequeue(req); | |
e88c591d | 1458 | req->io_canceled = true; |
a83cfd12 | 1459 | if (req->aiocb) { |
4be74634 | 1460 | blk_aio_cancel(req->aiocb); |
488eef2f PB |
1461 | } else { |
1462 | scsi_req_cancel_complete(req); | |
e88c591d | 1463 | } |
94d3f98a PB |
1464 | } |
1465 | ||
e48e84ea PB |
1466 | static int scsi_ua_precedence(SCSISense sense) |
1467 | { | |
1468 | if (sense.key != UNIT_ATTENTION) { | |
1469 | return INT_MAX; | |
1470 | } | |
1471 | if (sense.asc == 0x29 && sense.ascq == 0x04) { | |
1472 | /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */ | |
1473 | return 1; | |
1474 | } else if (sense.asc == 0x3F && sense.ascq == 0x01) { | |
1475 | /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */ | |
1476 | return 2; | |
1477 | } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) { | |
1478 | /* These two go with "all others". */ | |
1479 | ; | |
1480 | } else if (sense.asc == 0x29 && sense.ascq <= 0x07) { | |
1481 | /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0 | |
1482 | * POWER ON OCCURRED = 1 | |
1483 | * SCSI BUS RESET OCCURRED = 2 | |
1484 | * BUS DEVICE RESET FUNCTION OCCURRED = 3 | |
1485 | * I_T NEXUS LOSS OCCURRED = 7 | |
1486 | */ | |
1487 | return sense.ascq; | |
1488 | } else if (sense.asc == 0x2F && sense.ascq == 0x01) { | |
1489 | /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */ | |
1490 | return 8; | |
1491 | } | |
1492 | return (sense.asc << 8) | sense.ascq; | |
1493 | } | |
1494 | ||
1495 | void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense) | |
1496 | { | |
1497 | int prec1, prec2; | |
1498 | if (sense.key != UNIT_ATTENTION) { | |
1499 | return; | |
1500 | } | |
1501 | trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key, | |
1502 | sense.asc, sense.ascq); | |
1503 | ||
1504 | /* | |
1505 | * Override a pre-existing unit attention condition, except for a more | |
1506 | * important reset condition. | |
1507 | */ | |
1508 | prec1 = scsi_ua_precedence(sdev->unit_attention); | |
1509 | prec2 = scsi_ua_precedence(sense); | |
1510 | if (prec2 < prec1) { | |
1511 | sdev->unit_attention = sense; | |
1512 | } | |
1513 | } | |
1514 | ||
c7b48872 | 1515 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1516 | { |
1517 | SCSIRequest *req; | |
1518 | ||
8aad35f6 | 1519 | aio_context_acquire(blk_get_aio_context(sdev->conf.blk)); |
c557e889 PB |
1520 | while (!QTAILQ_EMPTY(&sdev->requests)) { |
1521 | req = QTAILQ_FIRST(&sdev->requests); | |
8aad35f6 | 1522 | scsi_req_cancel_async(req, NULL); |
c557e889 | 1523 | } |
8aad35f6 PB |
1524 | blk_drain(sdev->conf.blk); |
1525 | aio_context_release(blk_get_aio_context(sdev->conf.blk)); | |
e48e84ea | 1526 | scsi_device_set_ua(sdev, sense); |
c557e889 PB |
1527 | } |
1528 | ||
baa1bd89 PB |
1529 | static char *scsibus_get_dev_path(DeviceState *dev) |
1530 | { | |
e1dc6815 | 1531 | SCSIDevice *d = SCSI_DEVICE(dev); |
baa1bd89 | 1532 | DeviceState *hba = dev->parent_bus->parent; |
09e5ab63 | 1533 | char *id; |
b7c8c35f | 1534 | char *path; |
baa1bd89 | 1535 | |
09e5ab63 | 1536 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1537 | if (id) { |
b7c8c35f | 1538 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1539 | } else { |
b7c8c35f | 1540 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1541 | } |
b7c8c35f PB |
1542 | g_free(id); |
1543 | return path; | |
baa1bd89 PB |
1544 | } |
1545 | ||
db07c0f8 GN |
1546 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1547 | { | |
b9eea3e6 | 1548 | SCSIDevice *d = SCSI_DEVICE(dev); |
a5cf8262 JM |
1549 | return g_strdup_printf("channel@%x/%s@%x,%x", d->channel, |
1550 | qdev_fw_name(dev), d->id, d->lun); | |
f48a7a6e PB |
1551 | } |
1552 | ||
0d3545e7 | 1553 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) |
f48a7a6e | 1554 | { |
0866aca1 | 1555 | BusChild *kid; |
f48a7a6e | 1556 | SCSIDevice *target_dev = NULL; |
db07c0f8 | 1557 | |
eae3eb3e | 1558 | QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, sibling) { |
0866aca1 | 1559 | DeviceState *qdev = kid->child; |
b9eea3e6 | 1560 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
db07c0f8 | 1561 | |
0d3545e7 | 1562 | if (dev->channel == channel && dev->id == id) { |
f48a7a6e PB |
1563 | if (dev->lun == lun) { |
1564 | return dev; | |
1565 | } | |
1566 | target_dev = dev; | |
1567 | } | |
1568 | } | |
1569 | return target_dev; | |
db07c0f8 | 1570 | } |
b9eea3e6 | 1571 | |
63f740dd PB |
1572 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1573 | ||
2c21ee76 | 1574 | static int put_scsi_requests(QEMUFile *f, void *pv, size_t size, |
03fee66f | 1575 | const VMStateField *field, QJSON *vmdesc) |
63f740dd PB |
1576 | { |
1577 | SCSIDevice *s = pv; | |
1578 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1579 | SCSIRequest *req; | |
1580 | ||
1581 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1582 | assert(!req->io_canceled); | |
1583 | assert(req->status == -1); | |
63f740dd PB |
1584 | assert(req->enqueued); |
1585 | ||
18eef3bc | 1586 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
1587 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
1588 | qemu_put_be32s(f, &req->tag); | |
1589 | qemu_put_be32s(f, &req->lun); | |
1590 | if (bus->info->save_request) { | |
1591 | bus->info->save_request(f, req); | |
1592 | } | |
1593 | if (req->ops->save_request) { | |
1594 | req->ops->save_request(f, req); | |
1595 | } | |
1596 | } | |
1597 | qemu_put_sbyte(f, 0); | |
2c21ee76 JD |
1598 | |
1599 | return 0; | |
63f740dd PB |
1600 | } |
1601 | ||
2c21ee76 | 1602 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size, |
03fee66f | 1603 | const VMStateField *field) |
63f740dd PB |
1604 | { |
1605 | SCSIDevice *s = pv; | |
1606 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 1607 | int8_t sbyte; |
63f740dd | 1608 | |
18eef3bc | 1609 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
1610 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
1611 | uint32_t tag; | |
1612 | uint32_t lun; | |
1613 | SCSIRequest *req; | |
1614 | ||
1615 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1616 | qemu_get_be32s(f, &tag); | |
1617 | qemu_get_be32s(f, &lun); | |
1618 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
18eef3bc | 1619 | req->retry = (sbyte == 1); |
63f740dd PB |
1620 | if (bus->info->load_request) { |
1621 | req->hba_private = bus->info->load_request(f, req); | |
1622 | } | |
1623 | if (req->ops->load_request) { | |
1624 | req->ops->load_request(f, req); | |
1625 | } | |
1626 | ||
1627 | /* Just restart it later. */ | |
63f740dd PB |
1628 | scsi_req_enqueue_internal(req); |
1629 | ||
1630 | /* At this point, the request will be kept alive by the reference | |
1631 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1632 | * The HBA of course will add its own reference in the load_request | |
1633 | * callback if it needs to hold on the SCSIRequest. | |
1634 | */ | |
1635 | scsi_req_unref(req); | |
1636 | } | |
1637 | ||
1638 | return 0; | |
1639 | } | |
1640 | ||
12badfc2 | 1641 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
1642 | .name = "scsi-requests", |
1643 | .get = get_scsi_requests, | |
1644 | .put = put_scsi_requests, | |
1645 | }; | |
1646 | ||
2e323f03 FZ |
1647 | static bool scsi_sense_state_needed(void *opaque) |
1648 | { | |
1649 | SCSIDevice *s = opaque; | |
1650 | ||
1651 | return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD; | |
1652 | } | |
1653 | ||
1654 | static const VMStateDescription vmstate_scsi_sense_state = { | |
1655 | .name = "SCSIDevice/sense", | |
1656 | .version_id = 1, | |
1657 | .minimum_version_id = 1, | |
5cd8cada | 1658 | .needed = scsi_sense_state_needed, |
d49805ae | 1659 | .fields = (VMStateField[]) { |
2e323f03 FZ |
1660 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, |
1661 | SCSI_SENSE_BUF_SIZE_OLD, | |
1662 | SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD), | |
1663 | VMSTATE_END_OF_LIST() | |
1664 | } | |
1665 | }; | |
1666 | ||
63f740dd PB |
1667 | const VMStateDescription vmstate_scsi_device = { |
1668 | .name = "SCSIDevice", | |
1669 | .version_id = 1, | |
1670 | .minimum_version_id = 1, | |
63f740dd PB |
1671 | .fields = (VMStateField[]) { |
1672 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1673 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1674 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1675 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
2e323f03 | 1676 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD), |
63f740dd PB |
1677 | VMSTATE_UINT32(sense_len, SCSIDevice), |
1678 | { | |
1679 | .name = "requests", | |
1680 | .version_id = 0, | |
1681 | .field_exists = NULL, | |
1682 | .size = 0, /* ouch */ | |
1683 | .info = &vmstate_info_scsi_requests, | |
1684 | .flags = VMS_SINGLE, | |
1685 | .offset = 0, | |
1686 | }, | |
1687 | VMSTATE_END_OF_LIST() | |
2e323f03 | 1688 | }, |
5cd8cada JQ |
1689 | .subsections = (const VMStateDescription*[]) { |
1690 | &vmstate_scsi_sense_state, | |
1691 | NULL | |
63f740dd PB |
1692 | } |
1693 | }; | |
1694 | ||
39bffca2 AL |
1695 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
1696 | { | |
1697 | DeviceClass *k = DEVICE_CLASS(klass); | |
125ee0ed | 1698 | set_bit(DEVICE_CATEGORY_STORAGE, k->categories); |
a818a4b6 FZ |
1699 | k->bus_type = TYPE_SCSI_BUS; |
1700 | k->realize = scsi_qdev_realize; | |
a818a4b6 FZ |
1701 | k->unrealize = scsi_qdev_unrealize; |
1702 | k->props = scsi_props; | |
39bffca2 AL |
1703 | } |
1704 | ||
44fb6337 GA |
1705 | static void scsi_dev_instance_init(Object *obj) |
1706 | { | |
1707 | DeviceState *dev = DEVICE(obj); | |
e1dc6815 | 1708 | SCSIDevice *s = SCSI_DEVICE(dev); |
44fb6337 GA |
1709 | |
1710 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
1711 | "bootindex", NULL, | |
1712 | &s->qdev, NULL); | |
1713 | } | |
1714 | ||
8c43a6f0 | 1715 | static const TypeInfo scsi_device_type_info = { |
b9eea3e6 AL |
1716 | .name = TYPE_SCSI_DEVICE, |
1717 | .parent = TYPE_DEVICE, | |
1718 | .instance_size = sizeof(SCSIDevice), | |
1719 | .abstract = true, | |
1720 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 1721 | .class_init = scsi_device_class_init, |
44fb6337 | 1722 | .instance_init = scsi_dev_instance_init, |
b9eea3e6 AL |
1723 | }; |
1724 | ||
83f7d43a | 1725 | static void scsi_register_types(void) |
b9eea3e6 | 1726 | { |
0d936928 | 1727 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
1728 | type_register_static(&scsi_device_type_info); |
1729 | } | |
1730 | ||
83f7d43a | 1731 | type_init(scsi_register_types) |