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Commit | Line | Data |
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83c9f4ca | 1 | #include "hw/hw.h" |
1de7afc9 | 2 | #include "qemu/error-report.h" |
0d09e41a PB |
3 | #include "hw/scsi/scsi.h" |
4 | #include "block/scsi.h" | |
83c9f4ca | 5 | #include "hw/qdev.h" |
fa1d36df | 6 | #include "sysemu/block-backend.h" |
9c17d615 | 7 | #include "sysemu/blockdev.h" |
5138efec | 8 | #include "trace.h" |
9c17d615 | 9 | #include "sysemu/dma.h" |
d52affa7 | 10 | |
baa1bd89 | 11 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 12 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
71544d30 | 13 | static void scsi_req_dequeue(SCSIRequest *req); |
84642435 AH |
14 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len); |
15 | static void scsi_target_free_buf(SCSIRequest *req); | |
db07c0f8 | 16 | |
3cb75a7c PB |
17 | static Property scsi_props[] = { |
18 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), | |
19 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
20 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), | |
21 | DEFINE_PROP_END_OF_LIST(), | |
22 | }; | |
23 | ||
0d936928 AL |
24 | static void scsi_bus_class_init(ObjectClass *klass, void *data) |
25 | { | |
26 | BusClass *k = BUS_CLASS(klass); | |
bddd763a | 27 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); |
0d936928 AL |
28 | |
29 | k->get_dev_path = scsibus_get_dev_path; | |
30 | k->get_fw_dev_path = scsibus_get_fw_dev_path; | |
bddd763a | 31 | hc->unplug = qdev_simple_device_unplug_cb; |
0d936928 AL |
32 | } |
33 | ||
34 | static const TypeInfo scsi_bus_info = { | |
35 | .name = TYPE_SCSI_BUS, | |
36 | .parent = TYPE_BUS, | |
37 | .instance_size = sizeof(SCSIBus), | |
38 | .class_init = scsi_bus_class_init, | |
bddd763a IM |
39 | .interfaces = (InterfaceInfo[]) { |
40 | { TYPE_HOTPLUG_HANDLER }, | |
41 | { } | |
42 | } | |
d52affa7 GH |
43 | }; |
44 | static int next_scsi_bus; | |
45 | ||
a818a4b6 | 46 | static void scsi_device_realize(SCSIDevice *s, Error **errp) |
b9eea3e6 AL |
47 | { |
48 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
a818a4b6 FZ |
49 | if (sc->realize) { |
50 | sc->realize(s, errp); | |
b9eea3e6 | 51 | } |
b9eea3e6 AL |
52 | } |
53 | ||
a818a4b6 | 54 | static void scsi_device_unrealize(SCSIDevice *s, Error **errp) |
b9eea3e6 AL |
55 | { |
56 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
a818a4b6 FZ |
57 | if (sc->unrealize) { |
58 | sc->unrealize(s, errp); | |
b9eea3e6 AL |
59 | } |
60 | } | |
61 | ||
ff34c32c PB |
62 | int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, |
63 | void *hba_private) | |
64 | { | |
65 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
66 | int rc; | |
67 | ||
68 | assert(cmd->len == 0); | |
69 | rc = scsi_req_parse_cdb(dev, cmd, buf); | |
70 | if (bus->info->parse_cdb) { | |
71 | rc = bus->info->parse_cdb(dev, cmd, buf, hba_private); | |
72 | } | |
73 | return rc; | |
74 | } | |
75 | ||
b9eea3e6 AL |
76 | static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun, |
77 | uint8_t *buf, void *hba_private) | |
78 | { | |
79 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
80 | if (sc->alloc_req) { | |
81 | return sc->alloc_req(s, tag, lun, buf, hba_private); | |
82 | } | |
83 | ||
84 | return NULL; | |
85 | } | |
86 | ||
87 | static void scsi_device_unit_attention_reported(SCSIDevice *s) | |
88 | { | |
89 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
90 | if (sc->unit_attention_reported) { | |
91 | sc->unit_attention_reported(s); | |
92 | } | |
93 | } | |
94 | ||
d52affa7 | 95 | /* Create a scsi bus, and attach devices to it. */ |
b1187b51 AF |
96 | void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host, |
97 | const SCSIBusInfo *info, const char *bus_name) | |
d52affa7 | 98 | { |
fb17dfe0 | 99 | qbus_create_inplace(bus, bus_size, TYPE_SCSI_BUS, host, bus_name); |
d52affa7 | 100 | bus->busnr = next_scsi_bus++; |
afd4030c | 101 | bus->info = info; |
bddd763a | 102 | qbus_set_bus_hotplug_handler(BUS(bus), &error_abort); |
d52affa7 GH |
103 | } |
104 | ||
71544d30 PB |
105 | static void scsi_dma_restart_bh(void *opaque) |
106 | { | |
107 | SCSIDevice *s = opaque; | |
108 | SCSIRequest *req, *next; | |
109 | ||
110 | qemu_bh_delete(s->bh); | |
111 | s->bh = NULL; | |
112 | ||
113 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { | |
114 | scsi_req_ref(req); | |
115 | if (req->retry) { | |
116 | req->retry = false; | |
117 | switch (req->cmd.mode) { | |
118 | case SCSI_XFER_FROM_DEV: | |
119 | case SCSI_XFER_TO_DEV: | |
120 | scsi_req_continue(req); | |
121 | break; | |
122 | case SCSI_XFER_NONE: | |
123 | scsi_req_dequeue(req); | |
124 | scsi_req_enqueue(req); | |
125 | break; | |
126 | } | |
127 | } | |
128 | scsi_req_unref(req); | |
129 | } | |
130 | } | |
131 | ||
132 | void scsi_req_retry(SCSIRequest *req) | |
133 | { | |
134 | /* No need to save a reference, because scsi_dma_restart_bh just | |
135 | * looks at the request list. */ | |
136 | req->retry = true; | |
137 | } | |
138 | ||
139 | static void scsi_dma_restart_cb(void *opaque, int running, RunState state) | |
140 | { | |
141 | SCSIDevice *s = opaque; | |
142 | ||
143 | if (!running) { | |
144 | return; | |
145 | } | |
146 | if (!s->bh) { | |
147 | s->bh = qemu_bh_new(scsi_dma_restart_bh, s); | |
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 | } | |
a818a4b6 | 221 | scsi_device_unrealize(dev, errp); |
d52affa7 GH |
222 | } |
223 | ||
d52affa7 | 224 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
2d1fd261 | 225 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, |
76534da7 | 226 | int unit, bool removable, int bootindex, |
caad4eb3 | 227 | const char *serial, Error **errp) |
d52affa7 GH |
228 | { |
229 | const char *driver; | |
230 | DeviceState *dev; | |
caad4eb3 | 231 | Error *err = NULL; |
d52affa7 | 232 | |
f8b6cc00 | 233 | driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk"; |
d52affa7 GH |
234 | dev = qdev_create(&bus->qbus, driver); |
235 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
ce4e7e46 | 236 | if (bootindex >= 0) { |
8dece34f GA |
237 | object_property_set_int(OBJECT(dev), bootindex, "bootindex", |
238 | &error_abort); | |
ce4e7e46 | 239 | } |
89bfe000 | 240 | if (object_property_find(OBJECT(dev), "removable", NULL)) { |
2d1fd261 SH |
241 | qdev_prop_set_bit(dev, "removable", removable); |
242 | } | |
c24e7517 | 243 | if (serial && object_property_find(OBJECT(dev), "serial", NULL)) { |
76534da7 KW |
244 | qdev_prop_set_string(dev, "serial", serial); |
245 | } | |
18846dee | 246 | if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) { |
caad4eb3 | 247 | error_setg(errp, "Setting drive property failed"); |
02a5c4c9 | 248 | object_unparent(OBJECT(dev)); |
18846dee MA |
249 | return NULL; |
250 | } | |
caad4eb3 AF |
251 | object_property_set_bool(OBJECT(dev), true, "realized", &err); |
252 | if (err != NULL) { | |
253 | error_propagate(errp, err); | |
02a5c4c9 | 254 | object_unparent(OBJECT(dev)); |
33e66b86 | 255 | return NULL; |
caad4eb3 | 256 | } |
b9eea3e6 | 257 | return SCSI_DEVICE(dev); |
d52affa7 GH |
258 | } |
259 | ||
caad4eb3 | 260 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp) |
d52affa7 | 261 | { |
42e766a2 | 262 | Location loc; |
d52affa7 | 263 | DriveInfo *dinfo; |
caad4eb3 AF |
264 | int unit; |
265 | Error *err = NULL; | |
d52affa7 | 266 | |
42e766a2 | 267 | loc_push_none(&loc); |
d3d250bd | 268 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
269 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
270 | if (dinfo == NULL) { | |
271 | continue; | |
272 | } | |
42e766a2 | 273 | qemu_opts_loc_restore(dinfo->opts); |
fa1d36df MA |
274 | scsi_bus_legacy_add_drive(bus, blk_bs(blk_by_legacy_dinfo(dinfo)), |
275 | unit, false, -1, NULL, &err); | |
caad4eb3 | 276 | if (err != NULL) { |
a818a4b6 | 277 | error_report("%s", error_get_pretty(err)); |
caad4eb3 | 278 | error_propagate(errp, err); |
fa66b909 MA |
279 | break; |
280 | } | |
d52affa7 | 281 | } |
42e766a2 | 282 | loc_pop(&loc); |
d52affa7 | 283 | } |
89b08ae1 | 284 | |
12a08998 PB |
285 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
286 | { | |
287 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
288 | scsi_req_complete(req, CHECK_CONDITION); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static const struct SCSIReqOps reqops_invalid_field = { | |
293 | .size = sizeof(SCSIRequest), | |
294 | .send_command = scsi_invalid_field | |
295 | }; | |
296 | ||
afa46c46 PB |
297 | /* SCSIReqOps implementation for invalid commands. */ |
298 | ||
299 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
300 | { | |
301 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
302 | scsi_req_complete(req, CHECK_CONDITION); | |
303 | return 0; | |
304 | } | |
305 | ||
adcf2754 | 306 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
307 | .size = sizeof(SCSIRequest), |
308 | .send_command = scsi_invalid_command | |
309 | }; | |
310 | ||
6dc06f08 PB |
311 | /* SCSIReqOps implementation for unit attention conditions. */ |
312 | ||
313 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
314 | { | |
0bf8264e | 315 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { |
6dc06f08 PB |
316 | scsi_req_build_sense(req, req->dev->unit_attention); |
317 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
318 | scsi_req_build_sense(req, req->bus->unit_attention); | |
319 | } | |
320 | scsi_req_complete(req, CHECK_CONDITION); | |
321 | return 0; | |
322 | } | |
323 | ||
adcf2754 | 324 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
325 | .size = sizeof(SCSIRequest), |
326 | .send_command = scsi_unit_attention | |
327 | }; | |
328 | ||
fdaef069 PB |
329 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
330 | an invalid LUN. */ | |
331 | ||
332 | typedef struct SCSITargetReq SCSITargetReq; | |
333 | ||
334 | struct SCSITargetReq { | |
335 | SCSIRequest req; | |
336 | int len; | |
84642435 AH |
337 | uint8_t *buf; |
338 | int buf_len; | |
fdaef069 PB |
339 | }; |
340 | ||
341 | static void store_lun(uint8_t *outbuf, int lun) | |
342 | { | |
343 | if (lun < 256) { | |
344 | outbuf[1] = lun; | |
345 | return; | |
346 | } | |
347 | outbuf[1] = (lun & 255); | |
348 | outbuf[0] = (lun >> 8) | 0x40; | |
349 | } | |
350 | ||
351 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
352 | { | |
0866aca1 | 353 | BusChild *kid; |
ba74307c | 354 | int i, len, n; |
0d3545e7 | 355 | int channel, id; |
ba74307c PB |
356 | bool found_lun0; |
357 | ||
fdaef069 PB |
358 | if (r->req.cmd.xfer < 16) { |
359 | return false; | |
360 | } | |
361 | if (r->req.cmd.buf[2] > 2) { | |
362 | return false; | |
363 | } | |
0d3545e7 | 364 | channel = r->req.dev->channel; |
ba74307c PB |
365 | id = r->req.dev->id; |
366 | found_lun0 = false; | |
367 | n = 0; | |
0866aca1 AL |
368 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
369 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 370 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 371 | |
0d3545e7 | 372 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
373 | if (dev->lun == 0) { |
374 | found_lun0 = true; | |
375 | } | |
376 | n += 8; | |
377 | } | |
378 | } | |
379 | if (!found_lun0) { | |
380 | n += 8; | |
381 | } | |
ba74307c | 382 | |
84642435 AH |
383 | scsi_target_alloc_buf(&r->req, n + 8); |
384 | ||
385 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
fdaef069 | 386 | memset(r->buf, 0, len); |
84642435 | 387 | stl_be_p(&r->buf[0], n); |
ba74307c | 388 | i = found_lun0 ? 8 : 16; |
0866aca1 AL |
389 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
390 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 391 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 392 | |
0d3545e7 | 393 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
394 | store_lun(&r->buf[i], dev->lun); |
395 | i += 8; | |
396 | } | |
fdaef069 | 397 | } |
ba74307c PB |
398 | assert(i == n + 8); |
399 | r->len = len; | |
fdaef069 PB |
400 | return true; |
401 | } | |
402 | ||
403 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
404 | { | |
405 | assert(r->req.dev->lun != r->req.lun); | |
84642435 AH |
406 | |
407 | scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN); | |
408 | ||
fdaef069 PB |
409 | if (r->req.cmd.buf[1] & 0x2) { |
410 | /* Command support data - optional, not implemented */ | |
411 | return false; | |
412 | } | |
413 | ||
414 | if (r->req.cmd.buf[1] & 0x1) { | |
415 | /* Vital product data */ | |
416 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
417 | r->buf[r->len++] = page_code ; /* this page */ |
418 | r->buf[r->len++] = 0x00; | |
419 | ||
420 | switch (page_code) { | |
421 | case 0x00: /* Supported page codes, mandatory */ | |
422 | { | |
423 | int pages; | |
424 | pages = r->len++; | |
425 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
426 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
427 | break; | |
428 | } | |
429 | default: | |
430 | return false; | |
431 | } | |
432 | /* done with EVPD */ | |
84642435 | 433 | assert(r->len < r->buf_len); |
fdaef069 PB |
434 | r->len = MIN(r->req.cmd.xfer, r->len); |
435 | return true; | |
436 | } | |
437 | ||
438 | /* Standard INQUIRY data */ | |
439 | if (r->req.cmd.buf[2] != 0) { | |
440 | return false; | |
441 | } | |
442 | ||
443 | /* PAGE CODE == 0 */ | |
84642435 | 444 | r->len = MIN(r->req.cmd.xfer, SCSI_INQUIRY_LEN); |
fdaef069 PB |
445 | memset(r->buf, 0, r->len); |
446 | if (r->req.lun != 0) { | |
447 | r->buf[0] = TYPE_NO_LUN; | |
448 | } else { | |
449 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
450 | r->buf[2] = 5; /* Version */ | |
451 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
452 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 453 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
454 | memcpy(&r->buf[8], "QEMU ", 8); |
455 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
93bfef4c | 456 | pstrcpy((char *) &r->buf[32], 4, qemu_get_version()); |
fdaef069 PB |
457 | } |
458 | return true; | |
459 | } | |
460 | ||
461 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) | |
462 | { | |
463 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
464 | ||
465 | switch (buf[0]) { | |
466 | case REPORT_LUNS: | |
467 | if (!scsi_target_emulate_report_luns(r)) { | |
468 | goto illegal_request; | |
469 | } | |
470 | break; | |
471 | case INQUIRY: | |
472 | if (!scsi_target_emulate_inquiry(r)) { | |
473 | goto illegal_request; | |
474 | } | |
475 | break; | |
739df215 | 476 | case REQUEST_SENSE: |
84642435 | 477 | scsi_target_alloc_buf(&r->req, SCSI_SENSE_LEN); |
8b2a04ee | 478 | r->len = scsi_device_get_sense(r->req.dev, r->buf, |
84642435 | 479 | MIN(req->cmd.xfer, r->buf_len), |
739df215 | 480 | (req->cmd.buf[1] & 1) == 0); |
3653d8c4 | 481 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 482 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
483 | r->req.dev->sense_len = 0; |
484 | r->req.dev->sense_is_ua = false; | |
485 | } | |
739df215 | 486 | break; |
1cb27d92 PB |
487 | case TEST_UNIT_READY: |
488 | break; | |
fdaef069 PB |
489 | default: |
490 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); | |
491 | scsi_req_complete(req, CHECK_CONDITION); | |
492 | return 0; | |
493 | illegal_request: | |
494 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
495 | scsi_req_complete(req, CHECK_CONDITION); | |
496 | return 0; | |
497 | } | |
498 | ||
499 | if (!r->len) { | |
500 | scsi_req_complete(req, GOOD); | |
501 | } | |
502 | return r->len; | |
503 | } | |
504 | ||
505 | static void scsi_target_read_data(SCSIRequest *req) | |
506 | { | |
507 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
508 | uint32_t n; | |
509 | ||
510 | n = r->len; | |
511 | if (n > 0) { | |
512 | r->len = 0; | |
513 | scsi_req_data(&r->req, n); | |
514 | } else { | |
515 | scsi_req_complete(&r->req, GOOD); | |
516 | } | |
517 | } | |
518 | ||
519 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
520 | { | |
521 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
522 | ||
523 | return r->buf; | |
524 | } | |
525 | ||
84642435 AH |
526 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len) |
527 | { | |
528 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
529 | ||
530 | r->buf = g_malloc(len); | |
531 | r->buf_len = len; | |
532 | ||
533 | return r->buf; | |
534 | } | |
535 | ||
536 | static void scsi_target_free_buf(SCSIRequest *req) | |
537 | { | |
538 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
539 | ||
540 | g_free(r->buf); | |
541 | } | |
542 | ||
adcf2754 | 543 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
544 | .size = sizeof(SCSITargetReq), |
545 | .send_command = scsi_target_send_command, | |
546 | .read_data = scsi_target_read_data, | |
547 | .get_buf = scsi_target_get_buf, | |
84642435 | 548 | .free_req = scsi_target_free_buf, |
fdaef069 PB |
549 | }; |
550 | ||
551 | ||
adcf2754 PB |
552 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
553 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
554 | { |
555 | SCSIRequest *req; | |
cac3c384 PB |
556 | SCSIBus *bus = scsi_bus_from_device(d); |
557 | BusState *qbus = BUS(bus); | |
61e68b3f FZ |
558 | const int memset_off = offsetof(SCSIRequest, sense) |
559 | + sizeof(req->sense); | |
89b08ae1 | 560 | |
61e68b3f FZ |
561 | req = g_slice_alloc(reqops->size); |
562 | memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off); | |
5c6c0e51 | 563 | req->refcount = 1; |
cac3c384 | 564 | req->bus = bus; |
89b08ae1 GH |
565 | req->dev = d; |
566 | req->tag = tag; | |
567 | req->lun = lun; | |
c5bf71a9 | 568 | req->hba_private = hba_private; |
ed3a34a3 | 569 | req->status = -1; |
8dbd4574 | 570 | req->ops = reqops; |
cac3c384 PB |
571 | object_ref(OBJECT(d)); |
572 | object_ref(OBJECT(qbus->parent)); | |
8e0a9320 | 573 | notifier_list_init(&req->cancel_notifiers); |
5138efec | 574 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
575 | return req; |
576 | } | |
577 | ||
c5bf71a9 | 578 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 579 | uint8_t *buf, void *hba_private) |
43a2b339 | 580 | { |
6dc06f08 | 581 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
769998a1 | 582 | const SCSIReqOps *ops; |
ff34c32c | 583 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d); |
c39ce112 | 584 | SCSIRequest *req; |
769998a1 PB |
585 | SCSICommand cmd = { .len = 0 }; |
586 | int ret; | |
587 | ||
588 | if ((d->unit_attention.key == UNIT_ATTENTION || | |
589 | bus->unit_attention.key == UNIT_ATTENTION) && | |
590 | (buf[0] != INQUIRY && | |
591 | buf[0] != REPORT_LUNS && | |
592 | buf[0] != GET_CONFIGURATION && | |
593 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
594 | ||
595 | /* | |
596 | * If we already have a pending unit attention condition, | |
597 | * report this one before triggering another one. | |
598 | */ | |
599 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
600 | ops = &reqops_unit_attention; | |
601 | } else if (lun != d->lun || | |
602 | buf[0] == REPORT_LUNS || | |
603 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
604 | ops = &reqops_target_command; | |
605 | } else { | |
606 | ops = NULL; | |
607 | } | |
afa46c46 | 608 | |
ff34c32c PB |
609 | if (ops != NULL || !sc->parse_cdb) { |
610 | ret = scsi_req_parse_cdb(d, &cmd, buf); | |
611 | } else { | |
612 | ret = sc->parse_cdb(d, &cmd, buf, hba_private); | |
613 | } | |
614 | ||
769998a1 | 615 | if (ret != 0) { |
afa46c46 PB |
616 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); |
617 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
618 | } else { | |
769998a1 | 619 | assert(cmd.len != 0); |
afa46c46 PB |
620 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], |
621 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 622 | if (cmd.lba != -1) { |
afa46c46 PB |
623 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
624 | cmd.lba); | |
625 | } | |
fdaef069 | 626 | |
12a08998 PB |
627 | if (cmd.xfer > INT32_MAX) { |
628 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
769998a1 PB |
629 | } else if (ops) { |
630 | req = scsi_req_alloc(ops, d, tag, lun, hba_private); | |
fdaef069 | 631 | } else { |
b9eea3e6 | 632 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 633 | } |
afa46c46 PB |
634 | } |
635 | ||
636 | req->cmd = cmd; | |
01e95455 PB |
637 | req->resid = req->cmd.xfer; |
638 | ||
98254542 PB |
639 | switch (buf[0]) { |
640 | case INQUIRY: | |
641 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
642 | break; | |
643 | case TEST_UNIT_READY: | |
644 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
645 | break; | |
646 | case REPORT_LUNS: | |
647 | trace_scsi_report_luns(d->id, lun, tag); | |
648 | break; | |
649 | case REQUEST_SENSE: | |
650 | trace_scsi_request_sense(d->id, lun, tag); | |
651 | break; | |
652 | default: | |
653 | break; | |
654 | } | |
655 | ||
c39ce112 | 656 | return req; |
43a2b339 PB |
657 | } |
658 | ||
0c34459b PB |
659 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
660 | { | |
12010e7b | 661 | return req->ops->get_buf(req); |
0c34459b PB |
662 | } |
663 | ||
6dc06f08 PB |
664 | static void scsi_clear_unit_attention(SCSIRequest *req) |
665 | { | |
666 | SCSISense *ua; | |
667 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
668 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
669 | return; | |
670 | } | |
671 | ||
672 | /* | |
673 | * If an INQUIRY command enters the enabled command state, | |
674 | * the device server shall [not] clear any unit attention condition; | |
675 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
676 | */ | |
677 | if (req->cmd.buf[0] == INQUIRY || | |
678 | req->cmd.buf[0] == GET_CONFIGURATION || | |
679 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
680 | return; | |
681 | } | |
682 | ||
683 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
684 | ua = &req->dev->unit_attention; | |
685 | } else { | |
686 | ua = &req->bus->unit_attention; | |
687 | } | |
688 | ||
689 | /* | |
690 | * If a REPORT LUNS command enters the enabled command state, [...] | |
691 | * the device server shall clear any pending unit attention condition | |
692 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
693 | */ | |
694 | if (req->cmd.buf[0] == REPORT_LUNS && | |
695 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
696 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
697 | return; | |
698 | } | |
699 | ||
700 | *ua = SENSE_CODE(NO_SENSE); | |
701 | } | |
702 | ||
74382217 HR |
703 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
704 | { | |
6dc06f08 PB |
705 | int ret; |
706 | ||
b45ef674 PB |
707 | assert(len >= 14); |
708 | if (!req->sense_len) { | |
74382217 HR |
709 | return 0; |
710 | } | |
6dc06f08 PB |
711 | |
712 | ret = scsi_build_sense(req->sense, req->sense_len, buf, len, true); | |
713 | ||
714 | /* | |
715 | * FIXME: clearing unit attention conditions upon autosense should be done | |
716 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
717 | * (SAM-5, 5.14). | |
718 | * | |
719 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
720 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 721 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 722 | */ |
3653d8c4 | 723 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 724 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
725 | req->dev->sense_len = 0; |
726 | req->dev->sense_is_ua = false; | |
727 | } | |
6dc06f08 | 728 | return ret; |
b45ef674 PB |
729 | } |
730 | ||
731 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
732 | { | |
733 | return scsi_build_sense(dev->sense, dev->sense_len, buf, len, fixed); | |
734 | } | |
735 | ||
736 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
737 | { | |
738 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
739 | sense.key, sense.asc, sense.ascq); | |
740 | memset(req->sense, 0, 18); | |
77e4743c | 741 | req->sense[0] = 0x70; |
b45ef674 | 742 | req->sense[2] = sense.key; |
eae31cb9 | 743 | req->sense[7] = 10; |
b45ef674 PB |
744 | req->sense[12] = sense.asc; |
745 | req->sense[13] = sense.ascq; | |
746 | req->sense_len = 18; | |
74382217 HR |
747 | } |
748 | ||
63f740dd | 749 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 750 | { |
5c6c0e51 HR |
751 | assert(!req->enqueued); |
752 | scsi_req_ref(req); | |
3d5aba97 PB |
753 | if (req->bus->info->get_sg_list) { |
754 | req->sg = req->bus->info->get_sg_list(req); | |
755 | } else { | |
756 | req->sg = NULL; | |
757 | } | |
5c6c0e51 HR |
758 | req->enqueued = true; |
759 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 760 | } |
fc4f0754 | 761 | |
63f740dd PB |
762 | int32_t scsi_req_enqueue(SCSIRequest *req) |
763 | { | |
764 | int32_t rc; | |
765 | ||
766 | assert(!req->retry); | |
767 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 768 | scsi_req_ref(req); |
c39ce112 | 769 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
770 | scsi_req_unref(req); |
771 | return rc; | |
89b08ae1 GH |
772 | } |
773 | ||
a1f0cce2 | 774 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 775 | { |
5138efec | 776 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 777 | req->retry = false; |
e8637c90 JK |
778 | if (req->enqueued) { |
779 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
780 | req->enqueued = false; | |
ad2d30f7 | 781 | scsi_req_unref(req); |
e8637c90 JK |
782 | } |
783 | } | |
784 | ||
06b86357 PB |
785 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
786 | { | |
787 | /* MMC-6, paragraph 6.7. */ | |
788 | switch (type) { | |
789 | case 0: | |
790 | if ((data_type & 3) == 0) { | |
791 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
792 | return 16 * num_desc + 8; | |
793 | } else { | |
794 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
795 | return 6 * num_desc + 8; | |
796 | } | |
797 | case 1: | |
798 | case 4: | |
799 | case 5: | |
800 | return 8 * num_desc + 8; | |
801 | case 2: | |
802 | return 2048 * num_desc + 8; | |
803 | case 3: | |
804 | return 16 * num_desc + 8; | |
805 | default: | |
806 | return 8; | |
807 | } | |
808 | } | |
809 | ||
e4b65262 CM |
810 | static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf) |
811 | { | |
812 | int byte_block = (buf[2] >> 2) & 0x1; | |
813 | int type = (buf[2] >> 4) & 0x1; | |
814 | int xfer_unit; | |
815 | ||
816 | if (byte_block) { | |
817 | if (type) { | |
818 | xfer_unit = dev->blocksize; | |
819 | } else { | |
820 | xfer_unit = 512; | |
821 | } | |
822 | } else { | |
823 | xfer_unit = 1; | |
824 | } | |
825 | ||
826 | return xfer_unit; | |
827 | } | |
828 | ||
829 | static int ata_passthrough_12_xfer_size(SCSIDevice *dev, uint8_t *buf) | |
830 | { | |
831 | int length = buf[2] & 0x3; | |
832 | int xfer; | |
833 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
834 | ||
835 | switch (length) { | |
836 | case 0: | |
837 | case 3: /* USB-specific. */ | |
d83c951c | 838 | default: |
e4b65262 CM |
839 | xfer = 0; |
840 | break; | |
841 | case 1: | |
842 | xfer = buf[3]; | |
843 | break; | |
844 | case 2: | |
845 | xfer = buf[4]; | |
846 | break; | |
847 | } | |
848 | ||
849 | return xfer * unit; | |
850 | } | |
851 | ||
852 | static int ata_passthrough_16_xfer_size(SCSIDevice *dev, uint8_t *buf) | |
853 | { | |
854 | int extend = buf[1] & 0x1; | |
855 | int length = buf[2] & 0x3; | |
856 | int xfer; | |
857 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
858 | ||
859 | switch (length) { | |
860 | case 0: | |
861 | case 3: /* USB-specific. */ | |
d83c951c | 862 | default: |
e4b65262 CM |
863 | xfer = 0; |
864 | break; | |
865 | case 1: | |
866 | xfer = buf[4]; | |
867 | xfer |= (extend ? buf[3] << 8 : 0); | |
868 | break; | |
869 | case 2: | |
870 | xfer = buf[6]; | |
871 | xfer |= (extend ? buf[5] << 8 : 0); | |
872 | break; | |
873 | } | |
874 | ||
875 | return xfer * unit; | |
876 | } | |
877 | ||
bb729f75 PB |
878 | uint32_t scsi_data_cdb_length(uint8_t *buf) |
879 | { | |
880 | if ((buf[0] >> 5) == 0 && buf[4] == 0) { | |
881 | return 256; | |
882 | } else { | |
883 | return scsi_cdb_length(buf); | |
884 | } | |
885 | } | |
886 | ||
887 | uint32_t scsi_cdb_length(uint8_t *buf) | |
2ec749cb | 888 | { |
2599aece | 889 | switch (buf[0] >> 5) { |
2ec749cb | 890 | case 0: |
bb729f75 | 891 | return buf[4]; |
2ec749cb GH |
892 | break; |
893 | case 1: | |
894 | case 2: | |
bb729f75 | 895 | return lduw_be_p(&buf[7]); |
2ec749cb GH |
896 | break; |
897 | case 4: | |
bb729f75 | 898 | return ldl_be_p(&buf[10]) & 0xffffffffULL; |
2ec749cb GH |
899 | break; |
900 | case 5: | |
bb729f75 | 901 | return ldl_be_p(&buf[6]) & 0xffffffffULL; |
2ec749cb GH |
902 | break; |
903 | default: | |
904 | return -1; | |
905 | } | |
bb729f75 | 906 | } |
2ec749cb | 907 | |
bb729f75 PB |
908 | static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
909 | { | |
910 | cmd->xfer = scsi_cdb_length(buf); | |
2599aece | 911 | switch (buf[0]) { |
2ec749cb | 912 | case TEST_UNIT_READY: |
5e30a07d | 913 | case REWIND: |
2ec749cb | 914 | case START_STOP: |
00a01ad4 | 915 | case SET_CAPACITY: |
2ec749cb | 916 | case WRITE_FILEMARKS: |
06b86357 | 917 | case WRITE_FILEMARKS_16: |
2ec749cb | 918 | case SPACE: |
a5e3d9ef BK |
919 | case RESERVE: |
920 | case RELEASE: | |
2ec749cb GH |
921 | case ERASE: |
922 | case ALLOW_MEDIUM_REMOVAL: | |
2ec749cb GH |
923 | case SEEK_10: |
924 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
925 | case SYNCHRONIZE_CACHE_16: |
926 | case LOCATE_16: | |
2ec749cb | 927 | case LOCK_UNLOCK_CACHE: |
2ec749cb GH |
928 | case SET_CD_SPEED: |
929 | case SET_LIMITS: | |
5e30a07d | 930 | case WRITE_LONG_10: |
2ec749cb | 931 | case UPDATE_BLOCK: |
06b86357 PB |
932 | case RESERVE_TRACK: |
933 | case SET_READ_AHEAD: | |
934 | case PRE_FETCH: | |
935 | case PRE_FETCH_16: | |
936 | case ALLOW_OVERWRITE: | |
2599aece | 937 | cmd->xfer = 0; |
2ec749cb | 938 | break; |
d12ad44c PB |
939 | case VERIFY_10: |
940 | case VERIFY_12: | |
941 | case VERIFY_16: | |
942 | if ((buf[1] & 2) == 0) { | |
943 | cmd->xfer = 0; | |
7ef8cf9a | 944 | } else if ((buf[1] & 4) != 0) { |
d12ad44c PB |
945 | cmd->xfer = 1; |
946 | } | |
947 | cmd->xfer *= dev->blocksize; | |
948 | break; | |
2ec749cb GH |
949 | case MODE_SENSE: |
950 | break; | |
5e30a07d | 951 | case WRITE_SAME_10: |
a5ee9085 PB |
952 | case WRITE_SAME_16: |
953 | cmd->xfer = dev->blocksize; | |
2ec749cb | 954 | break; |
5e30a07d | 955 | case READ_CAPACITY_10: |
2599aece | 956 | cmd->xfer = 8; |
2ec749cb GH |
957 | break; |
958 | case READ_BLOCK_LIMITS: | |
2599aece | 959 | cmd->xfer = 6; |
2ec749cb | 960 | break; |
2ec749cb | 961 | case SEND_VOLUME_TAG: |
06b86357 PB |
962 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
963 | if (dev->type == TYPE_ROM) { | |
964 | cmd->xfer = buf[10] | (buf[9] << 8); | |
965 | } else { | |
966 | cmd->xfer = buf[9] | (buf[8] << 8); | |
967 | } | |
2ec749cb | 968 | break; |
f62d0594 PB |
969 | case WRITE_6: |
970 | /* length 0 means 256 blocks */ | |
971 | if (cmd->xfer == 0) { | |
972 | cmd->xfer = 256; | |
973 | } | |
c4ce4c4b | 974 | /* fall through */ |
2ec749cb | 975 | case WRITE_10: |
5e30a07d | 976 | case WRITE_VERIFY_10: |
2ec749cb GH |
977 | case WRITE_12: |
978 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
979 | case WRITE_16: |
980 | case WRITE_VERIFY_16: | |
2599aece | 981 | cmd->xfer *= dev->blocksize; |
2ec749cb | 982 | break; |
2ec749cb GH |
983 | case READ_6: |
984 | case READ_REVERSE: | |
f62d0594 PB |
985 | /* length 0 means 256 blocks */ |
986 | if (cmd->xfer == 0) { | |
987 | cmd->xfer = 256; | |
988 | } | |
c4ce4c4b | 989 | /* fall through */ |
f62d0594 | 990 | case READ_10: |
2ec749cb GH |
991 | case RECOVER_BUFFERED_DATA: |
992 | case READ_12: | |
bd536cf3 | 993 | case READ_16: |
2599aece | 994 | cmd->xfer *= dev->blocksize; |
2ec749cb | 995 | break; |
06b86357 PB |
996 | case FORMAT_UNIT: |
997 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
998 | * for block devices are restricted to the header right now. */ | |
999 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
1000 | cmd->xfer = 12; | |
1001 | } else { | |
1002 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
1003 | } | |
1004 | break; | |
2ec749cb | 1005 | case INQUIRY: |
06b86357 PB |
1006 | case RECEIVE_DIAGNOSTIC: |
1007 | case SEND_DIAGNOSTIC: | |
2599aece | 1008 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 1009 | break; |
06b86357 PB |
1010 | case READ_CD: |
1011 | case READ_BUFFER: | |
1012 | case WRITE_BUFFER: | |
1013 | case SEND_CUE_SHEET: | |
1014 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1015 | break; | |
1016 | case PERSISTENT_RESERVE_OUT: | |
1017 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
1018 | break; | |
1019 | case ERASE_12: | |
1020 | if (dev->type == TYPE_ROM) { | |
1021 | /* MMC command GET PERFORMANCE. */ | |
1022 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
1023 | buf[10], buf[1] & 0x1f); | |
1024 | } | |
1025 | break; | |
1026 | case MECHANISM_STATUS: | |
1027 | case READ_DVD_STRUCTURE: | |
1028 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
1029 | case MAINTENANCE_OUT: |
1030 | case MAINTENANCE_IN: | |
2599aece | 1031 | if (dev->type == TYPE_ROM) { |
c7126d5b | 1032 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 1033 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
1034 | } |
1035 | break; | |
e4b65262 CM |
1036 | case ATA_PASSTHROUGH_12: |
1037 | if (dev->type == TYPE_ROM) { | |
1038 | /* BLANK command of MMC */ | |
1039 | cmd->xfer = 0; | |
1040 | } else { | |
1041 | cmd->xfer = ata_passthrough_12_xfer_size(dev, buf); | |
1042 | } | |
1043 | break; | |
1044 | case ATA_PASSTHROUGH_16: | |
1045 | cmd->xfer = ata_passthrough_16_xfer_size(dev, buf); | |
1046 | break; | |
2ec749cb GH |
1047 | } |
1048 | return 0; | |
1049 | } | |
1050 | ||
2599aece | 1051 | static int scsi_req_stream_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 1052 | { |
2599aece | 1053 | switch (buf[0]) { |
2ec749cb | 1054 | /* stream commands */ |
06b86357 PB |
1055 | case ERASE_12: |
1056 | case ERASE_16: | |
1057 | cmd->xfer = 0; | |
1058 | break; | |
2ec749cb GH |
1059 | case READ_6: |
1060 | case READ_REVERSE: | |
1061 | case RECOVER_BUFFERED_DATA: | |
1062 | case WRITE_6: | |
2599aece PB |
1063 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); |
1064 | if (buf[1] & 0x01) { /* fixed */ | |
1065 | cmd->xfer *= dev->blocksize; | |
1066 | } | |
2ec749cb | 1067 | break; |
065c2599 PB |
1068 | case READ_16: |
1069 | case READ_REVERSE_16: | |
1070 | case VERIFY_16: | |
1071 | case WRITE_16: | |
065c2599 PB |
1072 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); |
1073 | if (buf[1] & 0x01) { /* fixed */ | |
1074 | cmd->xfer *= dev->blocksize; | |
1075 | } | |
1076 | break; | |
2ec749cb | 1077 | case REWIND: |
15e58a21 | 1078 | case LOAD_UNLOAD: |
2599aece | 1079 | cmd->xfer = 0; |
2ec749cb | 1080 | break; |
06b86357 PB |
1081 | case SPACE_16: |
1082 | cmd->xfer = buf[13] | (buf[12] << 8); | |
1083 | break; | |
1084 | case READ_POSITION: | |
9ce1bb2d CH |
1085 | switch (buf[1] & 0x1f) /* operation code */ { |
1086 | case SHORT_FORM_BLOCK_ID: | |
1087 | case SHORT_FORM_VENDOR_SPECIFIC: | |
1088 | cmd->xfer = 20; | |
1089 | break; | |
1090 | case LONG_FORM: | |
1091 | cmd->xfer = 32; | |
1092 | break; | |
1093 | case EXTENDED_FORM: | |
1094 | cmd->xfer = buf[8] | (buf[7] << 8); | |
1095 | break; | |
1096 | default: | |
1097 | return -1; | |
1098 | } | |
1099 | ||
06b86357 PB |
1100 | break; |
1101 | case FORMAT_UNIT: | |
1102 | cmd->xfer = buf[4] | (buf[3] << 8); | |
1103 | break; | |
2ec749cb GH |
1104 | /* generic commands */ |
1105 | default: | |
2599aece | 1106 | return scsi_req_length(cmd, dev, buf); |
2ec749cb GH |
1107 | } |
1108 | return 0; | |
1109 | } | |
1110 | ||
40723a99 CH |
1111 | static int scsi_req_medium_changer_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
1112 | { | |
1113 | switch (buf[0]) { | |
1114 | /* medium changer commands */ | |
1115 | case EXCHANGE_MEDIUM: | |
1116 | case INITIALIZE_ELEMENT_STATUS: | |
1117 | case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: | |
1118 | case MOVE_MEDIUM: | |
1119 | case POSITION_TO_ELEMENT: | |
1120 | cmd->xfer = 0; | |
1121 | break; | |
1122 | case READ_ELEMENT_STATUS: | |
1123 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); | |
1124 | break; | |
1125 | ||
1126 | /* generic commands */ | |
1127 | default: | |
1128 | return scsi_req_length(cmd, dev, buf); | |
1129 | } | |
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | ||
2599aece | 1134 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 1135 | { |
a5ee9085 PB |
1136 | if (!cmd->xfer) { |
1137 | cmd->mode = SCSI_XFER_NONE; | |
1138 | return; | |
1139 | } | |
2599aece | 1140 | switch (cmd->buf[0]) { |
97a06435 GH |
1141 | case WRITE_6: |
1142 | case WRITE_10: | |
5e30a07d | 1143 | case WRITE_VERIFY_10: |
97a06435 GH |
1144 | case WRITE_12: |
1145 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1146 | case WRITE_16: |
1147 | case WRITE_VERIFY_16: | |
d12ad44c PB |
1148 | case VERIFY_10: |
1149 | case VERIFY_12: | |
1150 | case VERIFY_16: | |
97a06435 GH |
1151 | case COPY: |
1152 | case COPY_VERIFY: | |
1153 | case COMPARE: | |
1154 | case CHANGE_DEFINITION: | |
1155 | case LOG_SELECT: | |
1156 | case MODE_SELECT: | |
1157 | case MODE_SELECT_10: | |
1158 | case SEND_DIAGNOSTIC: | |
1159 | case WRITE_BUFFER: | |
1160 | case FORMAT_UNIT: | |
1161 | case REASSIGN_BLOCKS: | |
97a06435 GH |
1162 | case SEARCH_EQUAL: |
1163 | case SEARCH_HIGH: | |
1164 | case SEARCH_LOW: | |
1165 | case UPDATE_BLOCK: | |
5e30a07d HR |
1166 | case WRITE_LONG_10: |
1167 | case WRITE_SAME_10: | |
a5ee9085 | 1168 | case WRITE_SAME_16: |
381b634c | 1169 | case UNMAP: |
97a06435 GH |
1170 | case SEARCH_HIGH_12: |
1171 | case SEARCH_EQUAL_12: | |
1172 | case SEARCH_LOW_12: | |
97a06435 GH |
1173 | case MEDIUM_SCAN: |
1174 | case SEND_VOLUME_TAG: | |
06b86357 PB |
1175 | case SEND_CUE_SHEET: |
1176 | case SEND_DVD_STRUCTURE: | |
01bedeba | 1177 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 1178 | case MAINTENANCE_OUT: |
2599aece | 1179 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 | 1180 | break; |
e4b65262 CM |
1181 | case ATA_PASSTHROUGH_12: |
1182 | case ATA_PASSTHROUGH_16: | |
1183 | /* T_DIR */ | |
1184 | cmd->mode = (cmd->buf[2] & 0x8) ? | |
1185 | SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV; | |
1186 | break; | |
97a06435 | 1187 | default: |
a5ee9085 | 1188 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
1189 | break; |
1190 | } | |
1191 | } | |
1192 | ||
2599aece | 1193 | static uint64_t scsi_cmd_lba(SCSICommand *cmd) |
2ec749cb | 1194 | { |
2599aece | 1195 | uint8_t *buf = cmd->buf; |
2ec749cb GH |
1196 | uint64_t lba; |
1197 | ||
1198 | switch (buf[0] >> 5) { | |
1199 | case 0: | |
bd5da232 | 1200 | lba = ldl_be_p(&buf[0]) & 0x1fffff; |
2ec749cb GH |
1201 | break; |
1202 | case 1: | |
1203 | case 2: | |
bd5da232 | 1204 | case 5: |
06b86357 | 1205 | lba = ldl_be_p(&buf[2]) & 0xffffffffULL; |
2ec749cb GH |
1206 | break; |
1207 | case 4: | |
bd5da232 | 1208 | lba = ldq_be_p(&buf[2]); |
2ec749cb GH |
1209 | break; |
1210 | default: | |
1211 | lba = -1; | |
1212 | ||
1213 | } | |
1214 | return lba; | |
1215 | } | |
1216 | ||
3e7e180a | 1217 | int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf) |
2ec749cb GH |
1218 | { |
1219 | int rc; | |
1220 | ||
769998a1 | 1221 | cmd->lba = -1; |
28b70c9d PB |
1222 | switch (buf[0] >> 5) { |
1223 | case 0: | |
1224 | cmd->len = 6; | |
1225 | break; | |
1226 | case 1: | |
1227 | case 2: | |
1228 | cmd->len = 10; | |
1229 | break; | |
1230 | case 4: | |
1231 | cmd->len = 16; | |
1232 | break; | |
1233 | case 5: | |
1234 | cmd->len = 12; | |
1235 | break; | |
1236 | default: | |
1237 | return -1; | |
1238 | } | |
1239 | ||
40723a99 CH |
1240 | switch (dev->type) { |
1241 | case TYPE_TAPE: | |
afa46c46 | 1242 | rc = scsi_req_stream_length(cmd, dev, buf); |
40723a99 CH |
1243 | break; |
1244 | case TYPE_MEDIUM_CHANGER: | |
1245 | rc = scsi_req_medium_changer_length(cmd, dev, buf); | |
1246 | break; | |
1247 | default: | |
afa46c46 | 1248 | rc = scsi_req_length(cmd, dev, buf); |
40723a99 | 1249 | break; |
2ec749cb | 1250 | } |
40723a99 | 1251 | |
2ec749cb GH |
1252 | if (rc != 0) |
1253 | return rc; | |
1254 | ||
afa46c46 PB |
1255 | memcpy(cmd->buf, buf, cmd->len); |
1256 | scsi_cmd_xfer_mode(cmd); | |
1257 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1258 | return 0; |
1259 | } | |
ed3a34a3 | 1260 | |
53200fad PB |
1261 | void scsi_device_report_change(SCSIDevice *dev, SCSISense sense) |
1262 | { | |
1263 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1264 | ||
1265 | scsi_device_set_ua(dev, sense); | |
1266 | if (bus->info->change) { | |
1267 | bus->info->change(bus, dev, sense); | |
1268 | } | |
1269 | } | |
1270 | ||
a1f0cce2 HR |
1271 | /* |
1272 | * Predefined sense codes | |
1273 | */ | |
1274 | ||
1275 | /* No sense data available */ | |
1276 | const struct SCSISense sense_code_NO_SENSE = { | |
1277 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 | |
1278 | }; | |
1279 | ||
1280 | /* LUN not ready, Manual intervention required */ | |
1281 | const struct SCSISense sense_code_LUN_NOT_READY = { | |
1282 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 | |
1283 | }; | |
1284 | ||
1285 | /* LUN not ready, Medium not present */ | |
1286 | const struct SCSISense sense_code_NO_MEDIUM = { | |
1287 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 | |
1288 | }; | |
1289 | ||
68bb01f3 MA |
1290 | /* LUN not ready, medium removal prevented */ |
1291 | const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = { | |
93161b69 | 1292 | .key = NOT_READY, .asc = 0x53, .ascq = 0x02 |
68bb01f3 MA |
1293 | }; |
1294 | ||
a1f0cce2 HR |
1295 | /* Hardware error, internal target failure */ |
1296 | const struct SCSISense sense_code_TARGET_FAILURE = { | |
1297 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 | |
1298 | }; | |
1299 | ||
1300 | /* Illegal request, invalid command operation code */ | |
1301 | const struct SCSISense sense_code_INVALID_OPCODE = { | |
1302 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 | |
1303 | }; | |
1304 | ||
1305 | /* Illegal request, LBA out of range */ | |
1306 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { | |
1307 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 | |
1308 | }; | |
1309 | ||
1310 | /* Illegal request, Invalid field in CDB */ | |
1311 | const struct SCSISense sense_code_INVALID_FIELD = { | |
1312 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 | |
1313 | }; | |
1314 | ||
380feaff PB |
1315 | /* Illegal request, Invalid field in parameter list */ |
1316 | const struct SCSISense sense_code_INVALID_PARAM = { | |
1317 | .key = ILLEGAL_REQUEST, .asc = 0x26, .ascq = 0x00 | |
1318 | }; | |
1319 | ||
1320 | /* Illegal request, Parameter list length error */ | |
1321 | const struct SCSISense sense_code_INVALID_PARAM_LEN = { | |
1322 | .key = ILLEGAL_REQUEST, .asc = 0x1a, .ascq = 0x00 | |
1323 | }; | |
1324 | ||
a1f0cce2 HR |
1325 | /* Illegal request, LUN not supported */ |
1326 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { | |
1327 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 | |
1328 | }; | |
1329 | ||
a872a304 PB |
1330 | /* Illegal request, Saving parameters not supported */ |
1331 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { | |
1332 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 | |
1333 | }; | |
1334 | ||
1335 | /* Illegal request, Incompatible medium installed */ | |
67cc61e4 | 1336 | const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = { |
a872a304 PB |
1337 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 |
1338 | }; | |
1339 | ||
68bb01f3 MA |
1340 | /* Illegal request, medium removal prevented */ |
1341 | const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = { | |
93161b69 | 1342 | .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x02 |
68bb01f3 MA |
1343 | }; |
1344 | ||
9ec557bd HG |
1345 | /* Illegal request, Invalid Transfer Tag */ |
1346 | const struct SCSISense sense_code_INVALID_TAG = { | |
1347 | .key = ILLEGAL_REQUEST, .asc = 0x4b, .ascq = 0x01 | |
1348 | }; | |
1349 | ||
a1f0cce2 HR |
1350 | /* Command aborted, I/O process terminated */ |
1351 | const struct SCSISense sense_code_IO_ERROR = { | |
1352 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 | |
1353 | }; | |
1354 | ||
1355 | /* Command aborted, I_T Nexus loss occurred */ | |
1356 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { | |
1357 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 | |
1358 | }; | |
1359 | ||
1360 | /* Command aborted, Logical Unit failure */ | |
1361 | const struct SCSISense sense_code_LUN_FAILURE = { | |
1362 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 | |
1363 | }; | |
1364 | ||
9ec557bd HG |
1365 | /* Command aborted, Overlapped Commands Attempted */ |
1366 | const struct SCSISense sense_code_OVERLAPPED_COMMANDS = { | |
1367 | .key = ABORTED_COMMAND, .asc = 0x4e, .ascq = 0x00 | |
1368 | }; | |
1369 | ||
aaebacef PB |
1370 | /* Unit attention, Capacity data has changed */ |
1371 | const struct SCSISense sense_code_CAPACITY_CHANGED = { | |
1372 | .key = UNIT_ATTENTION, .asc = 0x2a, .ascq = 0x09 | |
1373 | }; | |
1374 | ||
a872a304 PB |
1375 | /* Unit attention, Power on, reset or bus device reset occurred */ |
1376 | const struct SCSISense sense_code_RESET = { | |
1377 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 | |
1378 | }; | |
1379 | ||
8a9c16f6 PB |
1380 | /* Unit attention, No medium */ |
1381 | const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = { | |
1382 | .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00 | |
1383 | }; | |
1384 | ||
a872a304 PB |
1385 | /* Unit attention, Medium may have changed */ |
1386 | const struct SCSISense sense_code_MEDIUM_CHANGED = { | |
1387 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 | |
1388 | }; | |
1389 | ||
1390 | /* Unit attention, Reported LUNs data has changed */ | |
1391 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { | |
1392 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e | |
1393 | }; | |
1394 | ||
1395 | /* Unit attention, Device internal reset */ | |
1396 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { | |
1397 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 | |
1398 | }; | |
1399 | ||
6a8a685c RS |
1400 | /* Data Protection, Write Protected */ |
1401 | const struct SCSISense sense_code_WRITE_PROTECTED = { | |
1402 | .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x00 | |
1403 | }; | |
1404 | ||
703dd81a PB |
1405 | /* Data Protection, Space Allocation Failed Write Protect */ |
1406 | const struct SCSISense sense_code_SPACE_ALLOC_FAILED = { | |
1407 | .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x07 | |
1408 | }; | |
1409 | ||
a1f0cce2 HR |
1410 | /* |
1411 | * scsi_build_sense | |
1412 | * | |
b45ef674 | 1413 | * Convert between fixed and descriptor sense buffers |
a1f0cce2 | 1414 | */ |
b45ef674 PB |
1415 | int scsi_build_sense(uint8_t *in_buf, int in_len, |
1416 | uint8_t *buf, int len, bool fixed) | |
a1f0cce2 | 1417 | { |
b45ef674 PB |
1418 | bool fixed_in; |
1419 | SCSISense sense; | |
a1f0cce2 HR |
1420 | if (!fixed && len < 8) { |
1421 | return 0; | |
1422 | } | |
1423 | ||
b45ef674 PB |
1424 | if (in_len == 0) { |
1425 | sense.key = NO_SENSE; | |
1426 | sense.asc = 0; | |
1427 | sense.ascq = 0; | |
1428 | } else { | |
1429 | fixed_in = (in_buf[0] & 2) == 0; | |
1430 | ||
1431 | if (fixed == fixed_in) { | |
1432 | memcpy(buf, in_buf, MIN(len, in_len)); | |
1433 | return MIN(len, in_len); | |
1434 | } | |
1435 | ||
1436 | if (fixed_in) { | |
1437 | sense.key = in_buf[2]; | |
1438 | sense.asc = in_buf[12]; | |
1439 | sense.ascq = in_buf[13]; | |
1440 | } else { | |
1441 | sense.key = in_buf[1]; | |
1442 | sense.asc = in_buf[2]; | |
1443 | sense.ascq = in_buf[3]; | |
1444 | } | |
1445 | } | |
1446 | ||
a1f0cce2 HR |
1447 | memset(buf, 0, len); |
1448 | if (fixed) { | |
1449 | /* Return fixed format sense buffer */ | |
77e4743c | 1450 | buf[0] = 0x70; |
a1f0cce2 | 1451 | buf[2] = sense.key; |
eae31cb9 | 1452 | buf[7] = 10; |
a1f0cce2 HR |
1453 | buf[12] = sense.asc; |
1454 | buf[13] = sense.ascq; | |
84642435 | 1455 | return MIN(len, SCSI_SENSE_LEN); |
a1f0cce2 HR |
1456 | } else { |
1457 | /* Return descriptor format sense buffer */ | |
1458 | buf[0] = 0x72; | |
1459 | buf[1] = sense.key; | |
1460 | buf[2] = sense.asc; | |
1461 | buf[3] = sense.ascq; | |
1462 | return 8; | |
1463 | } | |
1464 | } | |
1465 | ||
b9e77bc7 | 1466 | const char *scsi_command_name(uint8_t cmd) |
ec766865 GH |
1467 | { |
1468 | static const char *names[] = { | |
1469 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", | |
5e30a07d | 1470 | [ REWIND ] = "REWIND", |
ec766865 GH |
1471 | [ REQUEST_SENSE ] = "REQUEST_SENSE", |
1472 | [ FORMAT_UNIT ] = "FORMAT_UNIT", | |
1473 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", | |
40723a99 CH |
1474 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS/INITIALIZE ELEMENT STATUS", |
1475 | /* LOAD_UNLOAD and INITIALIZE_ELEMENT_STATUS use the same operation code */ | |
ec766865 GH |
1476 | [ READ_6 ] = "READ_6", |
1477 | [ WRITE_6 ] = "WRITE_6", | |
00a01ad4 | 1478 | [ SET_CAPACITY ] = "SET_CAPACITY", |
ec766865 GH |
1479 | [ READ_REVERSE ] = "READ_REVERSE", |
1480 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", | |
1481 | [ SPACE ] = "SPACE", | |
1482 | [ INQUIRY ] = "INQUIRY", | |
1483 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", | |
c7126d5b NB |
1484 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", |
1485 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", | |
ec766865 GH |
1486 | [ MODE_SELECT ] = "MODE_SELECT", |
1487 | [ RESERVE ] = "RESERVE", | |
1488 | [ RELEASE ] = "RELEASE", | |
1489 | [ COPY ] = "COPY", | |
1490 | [ ERASE ] = "ERASE", | |
1491 | [ MODE_SENSE ] = "MODE_SENSE", | |
15e58a21 CH |
1492 | [ START_STOP ] = "START_STOP/LOAD_UNLOAD", |
1493 | /* LOAD_UNLOAD and START_STOP use the same operation code */ | |
ec766865 GH |
1494 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", |
1495 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", | |
1496 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", | |
5e30a07d | 1497 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", |
ec766865 GH |
1498 | [ READ_10 ] = "READ_10", |
1499 | [ WRITE_10 ] = "WRITE_10", | |
40723a99 CH |
1500 | [ SEEK_10 ] = "SEEK_10/POSITION_TO_ELEMENT", |
1501 | /* SEEK_10 and POSITION_TO_ELEMENT use the same operation code */ | |
5e30a07d HR |
1502 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", |
1503 | [ VERIFY_10 ] = "VERIFY_10", | |
ec766865 GH |
1504 | [ SEARCH_HIGH ] = "SEARCH_HIGH", |
1505 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", | |
1506 | [ SEARCH_LOW ] = "SEARCH_LOW", | |
1507 | [ SET_LIMITS ] = "SET_LIMITS", | |
00a01ad4 | 1508 | [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION", |
545557d4 | 1509 | /* READ_POSITION and PRE_FETCH use the same operation code */ |
ec766865 GH |
1510 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", |
1511 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", | |
40723a99 CH |
1512 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA/INITIALIZE_ELEMENT_STATUS_WITH_RANGE", |
1513 | /* READ_DEFECT_DATA and INITIALIZE_ELEMENT_STATUS_WITH_RANGE use the same operation code */ | |
ec766865 GH |
1514 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", |
1515 | [ COMPARE ] = "COMPARE", | |
1516 | [ COPY_VERIFY ] = "COPY_VERIFY", | |
1517 | [ WRITE_BUFFER ] = "WRITE_BUFFER", | |
1518 | [ READ_BUFFER ] = "READ_BUFFER", | |
1519 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", | |
5e30a07d HR |
1520 | [ READ_LONG_10 ] = "READ_LONG_10", |
1521 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", | |
ec766865 | 1522 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", |
5e30a07d HR |
1523 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", |
1524 | [ UNMAP ] = "UNMAP", | |
ec766865 | 1525 | [ READ_TOC ] = "READ_TOC", |
5e30a07d | 1526 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", |
3e46d87d | 1527 | [ SANITIZE ] = "SANITIZE", |
5e30a07d | 1528 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", |
ec766865 GH |
1529 | [ LOG_SELECT ] = "LOG_SELECT", |
1530 | [ LOG_SENSE ] = "LOG_SENSE", | |
1531 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", | |
1532 | [ RESERVE_10 ] = "RESERVE_10", | |
1533 | [ RELEASE_10 ] = "RELEASE_10", | |
1534 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", | |
1535 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", | |
1536 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", | |
5e30a07d HR |
1537 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", |
1538 | [ EXTENDED_COPY ] = "EXTENDED_COPY", | |
e4b65262 | 1539 | [ ATA_PASSTHROUGH_16 ] = "ATA_PASSTHROUGH_16", |
5e30a07d HR |
1540 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", |
1541 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", | |
1542 | [ READ_16 ] = "READ_16", | |
1543 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", | |
1544 | [ WRITE_16 ] = "WRITE_16", | |
1545 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", | |
1546 | [ VERIFY_16 ] = "VERIFY_16", | |
00a01ad4 PB |
1547 | [ PRE_FETCH_16 ] = "PRE_FETCH_16", |
1548 | [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16", | |
1549 | /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */ | |
5e30a07d | 1550 | [ LOCATE_16 ] = "LOCATE_16", |
00a01ad4 | 1551 | [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16", |
48bb9f53 | 1552 | /* ERASE_16 and WRITE_SAME_16 use the same operation code */ |
f6515262 | 1553 | [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16", |
5e30a07d HR |
1554 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", |
1555 | [ REPORT_LUNS ] = "REPORT_LUNS", | |
e4b65262 | 1556 | [ ATA_PASSTHROUGH_12 ] = "BLANK/ATA_PASSTHROUGH_12", |
ec766865 | 1557 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", |
40723a99 | 1558 | [ EXCHANGE_MEDIUM ] = "EXCHANGE MEDIUM", |
ec766865 GH |
1559 | [ READ_12 ] = "READ_12", |
1560 | [ WRITE_12 ] = "WRITE_12", | |
00a01ad4 PB |
1561 | [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE", |
1562 | /* ERASE_12 and GET_PERFORMANCE use the same operation code */ | |
f6515262 | 1563 | [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12", |
ec766865 | 1564 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", |
5e30a07d | 1565 | [ VERIFY_12 ] = "VERIFY_12", |
ec766865 GH |
1566 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", |
1567 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", | |
1568 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", | |
1569 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", | |
00a01ad4 PB |
1570 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING", |
1571 | /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */ | |
1572 | [ READ_CD ] = "READ_CD", | |
5e30a07d | 1573 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", |
00a01ad4 PB |
1574 | [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE", |
1575 | [ RESERVE_TRACK ] = "RESERVE_TRACK", | |
1576 | [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET", | |
1577 | [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE", | |
ec766865 | 1578 | [ SET_CD_SPEED ] = "SET_CD_SPEED", |
00a01ad4 PB |
1579 | [ SET_READ_AHEAD ] = "SET_READ_AHEAD", |
1580 | [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE", | |
1581 | [ MECHANISM_STATUS ] = "MECHANISM_STATUS", | |
b9e77bc7 AK |
1582 | [ GET_EVENT_STATUS_NOTIFICATION ] = "GET_EVENT_STATUS_NOTIFICATION", |
1583 | [ READ_DISC_INFORMATION ] = "READ_DISC_INFORMATION", | |
ec766865 GH |
1584 | }; |
1585 | ||
1586 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) | |
1587 | return "*UNKNOWN*"; | |
1588 | return names[cmd]; | |
1589 | } | |
1590 | ||
ad2d30f7 PB |
1591 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1592 | { | |
8e86b93c | 1593 | assert(req->refcount > 0); |
ad2d30f7 PB |
1594 | req->refcount++; |
1595 | return req; | |
1596 | } | |
1597 | ||
1598 | void scsi_req_unref(SCSIRequest *req) | |
1599 | { | |
68bd348a | 1600 | assert(req->refcount > 0); |
ad2d30f7 | 1601 | if (--req->refcount == 0) { |
cac3c384 PB |
1602 | BusState *qbus = req->dev->qdev.parent_bus; |
1603 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus); | |
1604 | ||
8e86b93c PB |
1605 | if (bus->info->free_request && req->hba_private) { |
1606 | bus->info->free_request(bus, req->hba_private); | |
1607 | } | |
12010e7b PB |
1608 | if (req->ops->free_req) { |
1609 | req->ops->free_req(req); | |
ad2d30f7 | 1610 | } |
cac3c384 PB |
1611 | object_unref(OBJECT(req->dev)); |
1612 | object_unref(OBJECT(qbus->parent)); | |
61e68b3f | 1613 | g_slice_free1(req->ops->size, req); |
ad2d30f7 PB |
1614 | } |
1615 | } | |
1616 | ||
ad3376cc PB |
1617 | /* Tell the device that we finished processing this chunk of I/O. It |
1618 | will start the next chunk or complete the command. */ | |
1619 | void scsi_req_continue(SCSIRequest *req) | |
1620 | { | |
6f6710aa PB |
1621 | if (req->io_canceled) { |
1622 | trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); | |
1623 | return; | |
1624 | } | |
ad3376cc PB |
1625 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
1626 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1627 | req->ops->write_data(req); |
ad3376cc | 1628 | } else { |
12010e7b | 1629 | req->ops->read_data(req); |
ad3376cc PB |
1630 | } |
1631 | } | |
1632 | ||
ab9adc88 PB |
1633 | /* Called by the devices when data is ready for the HBA. The HBA should |
1634 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1635 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1636 | void scsi_req_data(SCSIRequest *req, int len) |
1637 | { | |
3d5aba97 | 1638 | uint8_t *buf; |
e88c591d PB |
1639 | if (req->io_canceled) { |
1640 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1641 | return; |
e88c591d | 1642 | } |
01e95455 PB |
1643 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1644 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1645 | if (!req->sg) { |
1646 | req->resid -= len; | |
1647 | req->bus->info->transfer_data(req, len); | |
1648 | return; | |
1649 | } | |
1650 | ||
1651 | /* If the device calls scsi_req_data and the HBA specified a | |
1652 | * scatter/gather list, the transfer has to happen in a single | |
1653 | * step. */ | |
1654 | assert(!req->dma_started); | |
1655 | req->dma_started = true; | |
1656 | ||
1657 | buf = scsi_req_get_buf(req); | |
1658 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1659 | req->resid = dma_buf_read(buf, len, req->sg); | |
1660 | } else { | |
1661 | req->resid = dma_buf_write(buf, len, req->sg); | |
1662 | } | |
1663 | scsi_req_continue(req); | |
ab9adc88 PB |
1664 | } |
1665 | ||
ec766865 GH |
1666 | void scsi_req_print(SCSIRequest *req) |
1667 | { | |
1668 | FILE *fp = stderr; | |
1669 | int i; | |
1670 | ||
1671 | fprintf(fp, "[%s id=%d] %s", | |
1672 | req->dev->qdev.parent_bus->name, | |
1673 | req->dev->id, | |
1674 | scsi_command_name(req->cmd.buf[0])); | |
1675 | for (i = 1; i < req->cmd.len; i++) { | |
1676 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1677 | } | |
1678 | switch (req->cmd.mode) { | |
1679 | case SCSI_XFER_NONE: | |
1680 | fprintf(fp, " - none\n"); | |
1681 | break; | |
1682 | case SCSI_XFER_FROM_DEV: | |
1683 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1684 | break; | |
1685 | case SCSI_XFER_TO_DEV: | |
1686 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1687 | break; | |
1688 | default: | |
1689 | fprintf(fp, " - Oops\n"); | |
1690 | break; | |
1691 | } | |
1692 | } | |
1693 | ||
682a9b21 | 1694 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1695 | { |
682a9b21 PB |
1696 | assert(req->status == -1); |
1697 | req->status = status; | |
b45ef674 | 1698 | |
335f560f | 1699 | assert(req->sense_len <= sizeof(req->sense)); |
b45ef674 PB |
1700 | if (status == GOOD) { |
1701 | req->sense_len = 0; | |
1702 | } | |
1703 | ||
1704 | if (req->sense_len) { | |
1705 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1706 | req->dev->sense_len = req->sense_len; |
1707 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1708 | } else { | |
1709 | req->dev->sense_len = 0; | |
1710 | req->dev->sense_is_ua = false; | |
b45ef674 | 1711 | } |
b45ef674 | 1712 | |
6dc06f08 PB |
1713 | /* |
1714 | * Unit attention state is now stored in the device's sense buffer | |
1715 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1716 | * flags. | |
1717 | */ | |
1718 | scsi_clear_unit_attention(req); | |
1719 | ||
ad2d30f7 | 1720 | scsi_req_ref(req); |
e8637c90 | 1721 | scsi_req_dequeue(req); |
01e95455 | 1722 | req->bus->info->complete(req, req->status, req->resid); |
8e0a9320 FZ |
1723 | |
1724 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1725 | notifier_list_notify(&req->cancel_notifiers, req); | |
ad2d30f7 | 1726 | scsi_req_unref(req); |
ed3a34a3 | 1727 | } |
db07c0f8 | 1728 | |
d5776465 FZ |
1729 | /* Called by the devices when the request is canceled. */ |
1730 | void scsi_req_cancel_complete(SCSIRequest *req) | |
1731 | { | |
1732 | assert(req->io_canceled); | |
1733 | if (req->bus->info->cancel) { | |
1734 | req->bus->info->cancel(req); | |
1735 | } | |
8e0a9320 | 1736 | notifier_list_notify(&req->cancel_notifiers, req); |
d5776465 FZ |
1737 | scsi_req_unref(req); |
1738 | } | |
1739 | ||
8e0a9320 FZ |
1740 | /* Cancel @req asynchronously. @notifier is added to @req's cancellation |
1741 | * notifier list, the bus will be notified the requests cancellation is | |
1742 | * completed. | |
1743 | * */ | |
1744 | void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier) | |
1745 | { | |
1746 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); | |
1747 | if (notifier) { | |
1748 | notifier_list_add(&req->cancel_notifiers, notifier); | |
1749 | } | |
1750 | if (req->io_canceled) { | |
1751 | return; | |
1752 | } | |
1753 | scsi_req_ref(req); | |
1754 | scsi_req_dequeue(req); | |
1755 | req->io_canceled = true; | |
1756 | if (req->aiocb) { | |
1757 | bdrv_aio_cancel_async(req->aiocb); | |
1758 | } | |
1759 | } | |
1760 | ||
94d3f98a PB |
1761 | void scsi_req_cancel(SCSIRequest *req) |
1762 | { | |
814589c4 | 1763 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); |
e88c591d PB |
1764 | if (!req->enqueued) { |
1765 | return; | |
94d3f98a PB |
1766 | } |
1767 | scsi_req_ref(req); | |
1768 | scsi_req_dequeue(req); | |
e88c591d | 1769 | req->io_canceled = true; |
a83cfd12 FZ |
1770 | if (req->aiocb) { |
1771 | bdrv_aio_cancel(req->aiocb); | |
e88c591d | 1772 | } |
94d3f98a PB |
1773 | } |
1774 | ||
e48e84ea PB |
1775 | static int scsi_ua_precedence(SCSISense sense) |
1776 | { | |
1777 | if (sense.key != UNIT_ATTENTION) { | |
1778 | return INT_MAX; | |
1779 | } | |
1780 | if (sense.asc == 0x29 && sense.ascq == 0x04) { | |
1781 | /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */ | |
1782 | return 1; | |
1783 | } else if (sense.asc == 0x3F && sense.ascq == 0x01) { | |
1784 | /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */ | |
1785 | return 2; | |
1786 | } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) { | |
1787 | /* These two go with "all others". */ | |
1788 | ; | |
1789 | } else if (sense.asc == 0x29 && sense.ascq <= 0x07) { | |
1790 | /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0 | |
1791 | * POWER ON OCCURRED = 1 | |
1792 | * SCSI BUS RESET OCCURRED = 2 | |
1793 | * BUS DEVICE RESET FUNCTION OCCURRED = 3 | |
1794 | * I_T NEXUS LOSS OCCURRED = 7 | |
1795 | */ | |
1796 | return sense.ascq; | |
1797 | } else if (sense.asc == 0x2F && sense.ascq == 0x01) { | |
1798 | /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */ | |
1799 | return 8; | |
1800 | } | |
1801 | return (sense.asc << 8) | sense.ascq; | |
1802 | } | |
1803 | ||
1804 | void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense) | |
1805 | { | |
1806 | int prec1, prec2; | |
1807 | if (sense.key != UNIT_ATTENTION) { | |
1808 | return; | |
1809 | } | |
1810 | trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key, | |
1811 | sense.asc, sense.ascq); | |
1812 | ||
1813 | /* | |
1814 | * Override a pre-existing unit attention condition, except for a more | |
1815 | * important reset condition. | |
1816 | */ | |
1817 | prec1 = scsi_ua_precedence(sdev->unit_attention); | |
1818 | prec2 = scsi_ua_precedence(sense); | |
1819 | if (prec2 < prec1) { | |
1820 | sdev->unit_attention = sense; | |
1821 | } | |
1822 | } | |
1823 | ||
c7b48872 | 1824 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1825 | { |
1826 | SCSIRequest *req; | |
1827 | ||
1828 | while (!QTAILQ_EMPTY(&sdev->requests)) { | |
1829 | req = QTAILQ_FIRST(&sdev->requests); | |
94d3f98a | 1830 | scsi_req_cancel(req); |
c557e889 | 1831 | } |
e48e84ea PB |
1832 | |
1833 | scsi_device_set_ua(sdev, sense); | |
c557e889 PB |
1834 | } |
1835 | ||
baa1bd89 PB |
1836 | static char *scsibus_get_dev_path(DeviceState *dev) |
1837 | { | |
1838 | SCSIDevice *d = DO_UPCAST(SCSIDevice, qdev, dev); | |
1839 | DeviceState *hba = dev->parent_bus->parent; | |
09e5ab63 | 1840 | char *id; |
b7c8c35f | 1841 | char *path; |
baa1bd89 | 1842 | |
09e5ab63 | 1843 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1844 | if (id) { |
b7c8c35f | 1845 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1846 | } else { |
b7c8c35f | 1847 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1848 | } |
b7c8c35f PB |
1849 | g_free(id); |
1850 | return path; | |
baa1bd89 PB |
1851 | } |
1852 | ||
db07c0f8 GN |
1853 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1854 | { | |
b9eea3e6 | 1855 | SCSIDevice *d = SCSI_DEVICE(dev); |
a5cf8262 JM |
1856 | return g_strdup_printf("channel@%x/%s@%x,%x", d->channel, |
1857 | qdev_fw_name(dev), d->id, d->lun); | |
f48a7a6e PB |
1858 | } |
1859 | ||
0d3545e7 | 1860 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) |
f48a7a6e | 1861 | { |
0866aca1 | 1862 | BusChild *kid; |
f48a7a6e | 1863 | SCSIDevice *target_dev = NULL; |
db07c0f8 | 1864 | |
0866aca1 AL |
1865 | QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, ChildrenHead, sibling) { |
1866 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 1867 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
db07c0f8 | 1868 | |
0d3545e7 | 1869 | if (dev->channel == channel && dev->id == id) { |
f48a7a6e PB |
1870 | if (dev->lun == lun) { |
1871 | return dev; | |
1872 | } | |
1873 | target_dev = dev; | |
1874 | } | |
1875 | } | |
1876 | return target_dev; | |
db07c0f8 | 1877 | } |
b9eea3e6 | 1878 | |
63f740dd PB |
1879 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1880 | ||
1881 | static void put_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1882 | { | |
1883 | SCSIDevice *s = pv; | |
1884 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1885 | SCSIRequest *req; | |
1886 | ||
1887 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1888 | assert(!req->io_canceled); | |
1889 | assert(req->status == -1); | |
63f740dd PB |
1890 | assert(req->enqueued); |
1891 | ||
18eef3bc | 1892 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
1893 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
1894 | qemu_put_be32s(f, &req->tag); | |
1895 | qemu_put_be32s(f, &req->lun); | |
1896 | if (bus->info->save_request) { | |
1897 | bus->info->save_request(f, req); | |
1898 | } | |
1899 | if (req->ops->save_request) { | |
1900 | req->ops->save_request(f, req); | |
1901 | } | |
1902 | } | |
1903 | qemu_put_sbyte(f, 0); | |
1904 | } | |
1905 | ||
1906 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size) | |
1907 | { | |
1908 | SCSIDevice *s = pv; | |
1909 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 1910 | int8_t sbyte; |
63f740dd | 1911 | |
18eef3bc | 1912 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
1913 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
1914 | uint32_t tag; | |
1915 | uint32_t lun; | |
1916 | SCSIRequest *req; | |
1917 | ||
1918 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1919 | qemu_get_be32s(f, &tag); | |
1920 | qemu_get_be32s(f, &lun); | |
1921 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
18eef3bc | 1922 | req->retry = (sbyte == 1); |
63f740dd PB |
1923 | if (bus->info->load_request) { |
1924 | req->hba_private = bus->info->load_request(f, req); | |
1925 | } | |
1926 | if (req->ops->load_request) { | |
1927 | req->ops->load_request(f, req); | |
1928 | } | |
1929 | ||
1930 | /* Just restart it later. */ | |
63f740dd PB |
1931 | scsi_req_enqueue_internal(req); |
1932 | ||
1933 | /* At this point, the request will be kept alive by the reference | |
1934 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1935 | * The HBA of course will add its own reference in the load_request | |
1936 | * callback if it needs to hold on the SCSIRequest. | |
1937 | */ | |
1938 | scsi_req_unref(req); | |
1939 | } | |
1940 | ||
1941 | return 0; | |
1942 | } | |
1943 | ||
12badfc2 | 1944 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
1945 | .name = "scsi-requests", |
1946 | .get = get_scsi_requests, | |
1947 | .put = put_scsi_requests, | |
1948 | }; | |
1949 | ||
2e323f03 FZ |
1950 | static bool scsi_sense_state_needed(void *opaque) |
1951 | { | |
1952 | SCSIDevice *s = opaque; | |
1953 | ||
1954 | return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD; | |
1955 | } | |
1956 | ||
1957 | static const VMStateDescription vmstate_scsi_sense_state = { | |
1958 | .name = "SCSIDevice/sense", | |
1959 | .version_id = 1, | |
1960 | .minimum_version_id = 1, | |
d49805ae | 1961 | .fields = (VMStateField[]) { |
2e323f03 FZ |
1962 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, |
1963 | SCSI_SENSE_BUF_SIZE_OLD, | |
1964 | SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD), | |
1965 | VMSTATE_END_OF_LIST() | |
1966 | } | |
1967 | }; | |
1968 | ||
63f740dd PB |
1969 | const VMStateDescription vmstate_scsi_device = { |
1970 | .name = "SCSIDevice", | |
1971 | .version_id = 1, | |
1972 | .minimum_version_id = 1, | |
63f740dd PB |
1973 | .fields = (VMStateField[]) { |
1974 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1975 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1976 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1977 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
2e323f03 | 1978 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD), |
63f740dd PB |
1979 | VMSTATE_UINT32(sense_len, SCSIDevice), |
1980 | { | |
1981 | .name = "requests", | |
1982 | .version_id = 0, | |
1983 | .field_exists = NULL, | |
1984 | .size = 0, /* ouch */ | |
1985 | .info = &vmstate_info_scsi_requests, | |
1986 | .flags = VMS_SINGLE, | |
1987 | .offset = 0, | |
1988 | }, | |
1989 | VMSTATE_END_OF_LIST() | |
2e323f03 FZ |
1990 | }, |
1991 | .subsections = (VMStateSubsection []) { | |
1992 | { | |
1993 | .vmsd = &vmstate_scsi_sense_state, | |
1994 | .needed = scsi_sense_state_needed, | |
1995 | }, { | |
1996 | /* empty */ | |
1997 | } | |
63f740dd PB |
1998 | } |
1999 | }; | |
2000 | ||
39bffca2 AL |
2001 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
2002 | { | |
2003 | DeviceClass *k = DEVICE_CLASS(klass); | |
125ee0ed | 2004 | set_bit(DEVICE_CATEGORY_STORAGE, k->categories); |
a818a4b6 FZ |
2005 | k->bus_type = TYPE_SCSI_BUS; |
2006 | k->realize = scsi_qdev_realize; | |
a818a4b6 FZ |
2007 | k->unrealize = scsi_qdev_unrealize; |
2008 | k->props = scsi_props; | |
39bffca2 AL |
2009 | } |
2010 | ||
44fb6337 GA |
2011 | static void scsi_dev_instance_init(Object *obj) |
2012 | { | |
2013 | DeviceState *dev = DEVICE(obj); | |
2014 | SCSIDevice *s = DO_UPCAST(SCSIDevice, qdev, dev); | |
2015 | ||
2016 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
2017 | "bootindex", NULL, | |
2018 | &s->qdev, NULL); | |
2019 | } | |
2020 | ||
8c43a6f0 | 2021 | static const TypeInfo scsi_device_type_info = { |
b9eea3e6 AL |
2022 | .name = TYPE_SCSI_DEVICE, |
2023 | .parent = TYPE_DEVICE, | |
2024 | .instance_size = sizeof(SCSIDevice), | |
2025 | .abstract = true, | |
2026 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 2027 | .class_init = scsi_device_class_init, |
44fb6337 | 2028 | .instance_init = scsi_dev_instance_init, |
b9eea3e6 AL |
2029 | }; |
2030 | ||
83f7d43a | 2031 | static void scsi_register_types(void) |
b9eea3e6 | 2032 | { |
0d936928 | 2033 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
2034 | type_register_static(&scsi_device_type_info); |
2035 | } | |
2036 | ||
83f7d43a | 2037 | type_init(scsi_register_types) |