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a4ab4792 | 1 | #include "qemu/osdep.h" |
da34e65c | 2 | #include "qapi/error.h" |
1de7afc9 | 3 | #include "qemu/error-report.h" |
0b8fa32f | 4 | #include "qemu/module.h" |
922a01a0 | 5 | #include "qemu/option.h" |
a27bd6c7 | 6 | #include "hw/qdev-properties.h" |
0d09e41a | 7 | #include "hw/scsi/scsi.h" |
ca77ee28 | 8 | #include "migration/qemu-file-types.h" |
d6454270 | 9 | #include "migration/vmstate.h" |
08e2c9f1 | 10 | #include "scsi/constants.h" |
fa1d36df | 11 | #include "sysemu/block-backend.h" |
9c17d615 | 12 | #include "sysemu/blockdev.h" |
2f780b6a | 13 | #include "sysemu/sysemu.h" |
54d31236 | 14 | #include "sysemu/runstate.h" |
5138efec | 15 | #include "trace.h" |
9c17d615 | 16 | #include "sysemu/dma.h" |
f348b6d1 | 17 | #include "qemu/cutils.h" |
d52affa7 | 18 | |
baa1bd89 | 19 | static char *scsibus_get_dev_path(DeviceState *dev); |
db07c0f8 | 20 | static char *scsibus_get_fw_dev_path(DeviceState *dev); |
71544d30 | 21 | static void scsi_req_dequeue(SCSIRequest *req); |
84642435 AH |
22 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len); |
23 | static void scsi_target_free_buf(SCSIRequest *req); | |
db07c0f8 | 24 | |
3cb75a7c PB |
25 | static Property scsi_props[] = { |
26 | DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0), | |
27 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
28 | DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1), | |
29 | DEFINE_PROP_END_OF_LIST(), | |
30 | }; | |
31 | ||
0d936928 AL |
32 | static void scsi_bus_class_init(ObjectClass *klass, void *data) |
33 | { | |
34 | BusClass *k = BUS_CLASS(klass); | |
bddd763a | 35 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); |
0d936928 AL |
36 | |
37 | k->get_dev_path = scsibus_get_dev_path; | |
38 | k->get_fw_dev_path = scsibus_get_fw_dev_path; | |
bddd763a | 39 | hc->unplug = qdev_simple_device_unplug_cb; |
0d936928 AL |
40 | } |
41 | ||
42 | static const TypeInfo scsi_bus_info = { | |
43 | .name = TYPE_SCSI_BUS, | |
44 | .parent = TYPE_BUS, | |
45 | .instance_size = sizeof(SCSIBus), | |
46 | .class_init = scsi_bus_class_init, | |
bddd763a IM |
47 | .interfaces = (InterfaceInfo[]) { |
48 | { TYPE_HOTPLUG_HANDLER }, | |
49 | { } | |
50 | } | |
d52affa7 GH |
51 | }; |
52 | static int next_scsi_bus; | |
53 | ||
a818a4b6 | 54 | static void scsi_device_realize(SCSIDevice *s, Error **errp) |
b9eea3e6 AL |
55 | { |
56 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
a818a4b6 FZ |
57 | if (sc->realize) { |
58 | sc->realize(s, errp); | |
b9eea3e6 | 59 | } |
b9eea3e6 AL |
60 | } |
61 | ||
b69c3c21 | 62 | static void scsi_device_unrealize(SCSIDevice *s) |
6b98c5aa SE |
63 | { |
64 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
65 | if (sc->unrealize) { | |
b69c3c21 | 66 | sc->unrealize(s); |
6b98c5aa SE |
67 | } |
68 | } | |
69 | ||
ff34c32c PB |
70 | int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, |
71 | void *hba_private) | |
72 | { | |
73 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
74 | int rc; | |
75 | ||
76 | assert(cmd->len == 0); | |
77 | rc = scsi_req_parse_cdb(dev, cmd, buf); | |
78 | if (bus->info->parse_cdb) { | |
79 | rc = bus->info->parse_cdb(dev, cmd, buf, hba_private); | |
80 | } | |
81 | return rc; | |
82 | } | |
83 | ||
b9eea3e6 AL |
84 | static SCSIRequest *scsi_device_alloc_req(SCSIDevice *s, uint32_t tag, uint32_t lun, |
85 | uint8_t *buf, void *hba_private) | |
86 | { | |
87 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
88 | if (sc->alloc_req) { | |
89 | return sc->alloc_req(s, tag, lun, buf, hba_private); | |
90 | } | |
91 | ||
92 | return NULL; | |
93 | } | |
94 | ||
8d72db68 | 95 | void scsi_device_unit_attention_reported(SCSIDevice *s) |
b9eea3e6 AL |
96 | { |
97 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s); | |
98 | if (sc->unit_attention_reported) { | |
99 | sc->unit_attention_reported(s); | |
100 | } | |
101 | } | |
102 | ||
d52affa7 | 103 | /* Create a scsi bus, and attach devices to it. */ |
b1187b51 AF |
104 | void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host, |
105 | const SCSIBusInfo *info, const char *bus_name) | |
d52affa7 | 106 | { |
fb17dfe0 | 107 | qbus_create_inplace(bus, bus_size, TYPE_SCSI_BUS, host, bus_name); |
d52affa7 | 108 | bus->busnr = next_scsi_bus++; |
afd4030c | 109 | bus->info = info; |
cd7c8660 | 110 | qbus_set_bus_hotplug_handler(BUS(bus)); |
d52affa7 GH |
111 | } |
112 | ||
71544d30 PB |
113 | static void scsi_dma_restart_bh(void *opaque) |
114 | { | |
115 | SCSIDevice *s = opaque; | |
116 | SCSIRequest *req, *next; | |
117 | ||
118 | qemu_bh_delete(s->bh); | |
119 | s->bh = NULL; | |
120 | ||
1919631e | 121 | aio_context_acquire(blk_get_aio_context(s->conf.blk)); |
71544d30 PB |
122 | QTAILQ_FOREACH_SAFE(req, &s->requests, next, next) { |
123 | scsi_req_ref(req); | |
124 | if (req->retry) { | |
125 | req->retry = false; | |
126 | switch (req->cmd.mode) { | |
127 | case SCSI_XFER_FROM_DEV: | |
128 | case SCSI_XFER_TO_DEV: | |
129 | scsi_req_continue(req); | |
130 | break; | |
131 | case SCSI_XFER_NONE: | |
132 | scsi_req_dequeue(req); | |
133 | scsi_req_enqueue(req); | |
134 | break; | |
135 | } | |
136 | } | |
137 | scsi_req_unref(req); | |
138 | } | |
1919631e | 139 | aio_context_release(blk_get_aio_context(s->conf.blk)); |
71544d30 PB |
140 | } |
141 | ||
142 | void scsi_req_retry(SCSIRequest *req) | |
143 | { | |
144 | /* No need to save a reference, because scsi_dma_restart_bh just | |
145 | * looks at the request list. */ | |
146 | req->retry = true; | |
147 | } | |
148 | ||
149 | static void scsi_dma_restart_cb(void *opaque, int running, RunState state) | |
150 | { | |
151 | SCSIDevice *s = opaque; | |
152 | ||
153 | if (!running) { | |
154 | return; | |
155 | } | |
156 | if (!s->bh) { | |
d223c104 PB |
157 | AioContext *ctx = blk_get_aio_context(s->conf.blk); |
158 | s->bh = aio_bh_new(ctx, scsi_dma_restart_bh, s); | |
71544d30 PB |
159 | qemu_bh_schedule(s->bh); |
160 | } | |
161 | } | |
162 | ||
a818a4b6 | 163 | static void scsi_qdev_realize(DeviceState *qdev, Error **errp) |
d52affa7 | 164 | { |
b9eea3e6 | 165 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
d52affa7 | 166 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
7e0380b9 | 167 | SCSIDevice *d; |
a818a4b6 | 168 | Error *local_err = NULL; |
d52affa7 | 169 | |
0d3545e7 | 170 | if (dev->channel > bus->info->max_channel) { |
a818a4b6 FZ |
171 | error_setg(errp, "bad scsi channel id: %d", dev->channel); |
172 | return; | |
0d3545e7 | 173 | } |
7e0380b9 | 174 | if (dev->id != -1 && dev->id > bus->info->max_target) { |
a818a4b6 FZ |
175 | error_setg(errp, "bad scsi device id: %d", dev->id); |
176 | return; | |
d52affa7 | 177 | } |
d3d250bd | 178 | if (dev->lun != -1 && dev->lun > bus->info->max_lun) { |
a818a4b6 FZ |
179 | error_setg(errp, "bad scsi device lun: %d", dev->lun); |
180 | return; | |
d3d250bd | 181 | } |
d52affa7 | 182 | |
7e0380b9 PB |
183 | if (dev->id == -1) { |
184 | int id = -1; | |
185 | if (dev->lun == -1) { | |
186 | dev->lun = 0; | |
187 | } | |
188 | do { | |
0d3545e7 | 189 | d = scsi_device_find(bus, dev->channel, ++id, dev->lun); |
d3d250bd PB |
190 | } while (d && d->lun == dev->lun && id < bus->info->max_target); |
191 | if (d && d->lun == dev->lun) { | |
a818a4b6 FZ |
192 | error_setg(errp, "no free target"); |
193 | return; | |
7e0380b9 PB |
194 | } |
195 | dev->id = id; | |
196 | } else if (dev->lun == -1) { | |
197 | int lun = -1; | |
198 | do { | |
0d3545e7 | 199 | d = scsi_device_find(bus, dev->channel, dev->id, ++lun); |
7e0380b9 | 200 | } while (d && d->lun == lun && lun < bus->info->max_lun); |
d3d250bd | 201 | if (d && d->lun == lun) { |
a818a4b6 FZ |
202 | error_setg(errp, "no free lun"); |
203 | return; | |
7e0380b9 PB |
204 | } |
205 | dev->lun = lun; | |
206 | } else { | |
0d3545e7 | 207 | d = scsi_device_find(bus, dev->channel, dev->id, dev->lun); |
d3d250bd PB |
208 | assert(d); |
209 | if (d->lun == dev->lun && dev != d) { | |
a818a4b6 FZ |
210 | error_setg(errp, "lun already used by '%s'", d->qdev.id); |
211 | return; | |
7e0380b9 | 212 | } |
d52affa7 | 213 | } |
d52affa7 | 214 | |
9af99d98 | 215 | QTAILQ_INIT(&dev->requests); |
a818a4b6 FZ |
216 | scsi_device_realize(dev, &local_err); |
217 | if (local_err) { | |
218 | error_propagate(errp, local_err); | |
219 | return; | |
71544d30 | 220 | } |
1a8c091c SH |
221 | dev->vmsentry = qdev_add_vm_change_state_handler(DEVICE(dev), |
222 | scsi_dma_restart_cb, dev); | |
01985dcf GH |
223 | } |
224 | ||
b69c3c21 | 225 | static void scsi_qdev_unrealize(DeviceState *qdev) |
01985dcf | 226 | { |
b9eea3e6 | 227 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
01985dcf | 228 | |
71544d30 PB |
229 | if (dev->vmsentry) { |
230 | qemu_del_vm_change_state_handler(dev->vmsentry); | |
231 | } | |
fb7b5c0d PB |
232 | |
233 | scsi_device_purge_requests(dev, SENSE_CODE(NO_SENSE)); | |
6b98c5aa | 234 | |
b69c3c21 | 235 | scsi_device_unrealize(dev); |
6b98c5aa | 236 | |
fb7b5c0d | 237 | blockdev_mark_auto_del(dev->conf.blk); |
d52affa7 GH |
238 | } |
239 | ||
d52affa7 | 240 | /* handle legacy '-drive if=scsi,...' cmd line args */ |
4be74634 | 241 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, |
76534da7 | 242 | int unit, bool removable, int bootindex, |
395b9539 | 243 | bool share_rw, |
b8efb36b KW |
244 | BlockdevOnError rerror, |
245 | BlockdevOnError werror, | |
caad4eb3 | 246 | const char *serial, Error **errp) |
d52affa7 GH |
247 | { |
248 | const char *driver; | |
22647504 | 249 | char *name; |
d52affa7 | 250 | DeviceState *dev; |
0d074bf8 | 251 | DriveInfo *dinfo; |
d52affa7 | 252 | |
0d074bf8 PB |
253 | if (blk_is_sg(blk)) { |
254 | driver = "scsi-generic"; | |
255 | } else { | |
256 | dinfo = blk_legacy_dinfo(blk); | |
257 | if (dinfo && dinfo->media_cd) { | |
258 | driver = "scsi-cd"; | |
259 | } else { | |
260 | driver = "scsi-hd"; | |
261 | } | |
262 | } | |
3e80f690 | 263 | dev = qdev_new(driver); |
22647504 | 264 | name = g_strdup_printf("legacy[%d]", unit); |
d2623129 | 265 | object_property_add_child(OBJECT(bus), name, OBJECT(dev)); |
22647504 PB |
266 | g_free(name); |
267 | ||
d52affa7 | 268 | qdev_prop_set_uint32(dev, "scsi-id", unit); |
ce4e7e46 | 269 | if (bootindex >= 0) { |
5325cc34 | 270 | object_property_set_int(OBJECT(dev), "bootindex", bootindex, |
8dece34f | 271 | &error_abort); |
ce4e7e46 | 272 | } |
89bfe000 | 273 | if (object_property_find(OBJECT(dev), "removable", NULL)) { |
2d1fd261 SH |
274 | qdev_prop_set_bit(dev, "removable", removable); |
275 | } | |
c24e7517 | 276 | if (serial && object_property_find(OBJECT(dev), "serial", NULL)) { |
76534da7 KW |
277 | qdev_prop_set_string(dev, "serial", serial); |
278 | } | |
668f62ec | 279 | if (!qdev_prop_set_drive_err(dev, "drive", blk, errp)) { |
02a5c4c9 | 280 | object_unparent(OBJECT(dev)); |
18846dee MA |
281 | return NULL; |
282 | } | |
668f62ec | 283 | if (!object_property_set_bool(OBJECT(dev), "share-rw", share_rw, errp)) { |
395b9539 FZ |
284 | object_unparent(OBJECT(dev)); |
285 | return NULL; | |
286 | } | |
b8efb36b KW |
287 | |
288 | qdev_prop_set_enum(dev, "rerror", rerror); | |
289 | qdev_prop_set_enum(dev, "werror", werror); | |
290 | ||
668f62ec | 291 | if (!qdev_realize_and_unref(dev, &bus->qbus, errp)) { |
02a5c4c9 | 292 | object_unparent(OBJECT(dev)); |
33e66b86 | 293 | return NULL; |
caad4eb3 | 294 | } |
b9eea3e6 | 295 | return SCSI_DEVICE(dev); |
d52affa7 GH |
296 | } |
297 | ||
14545097 | 298 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus) |
d52affa7 | 299 | { |
42e766a2 | 300 | Location loc; |
d52affa7 | 301 | DriveInfo *dinfo; |
caad4eb3 | 302 | int unit; |
d52affa7 | 303 | |
42e766a2 | 304 | loc_push_none(&loc); |
d3d250bd | 305 | for (unit = 0; unit <= bus->info->max_target; unit++) { |
d52affa7 GH |
306 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
307 | if (dinfo == NULL) { | |
308 | continue; | |
309 | } | |
42e766a2 | 310 | qemu_opts_loc_restore(dinfo->opts); |
4be74634 | 311 | scsi_bus_legacy_add_drive(bus, blk_by_legacy_dinfo(dinfo), |
b8efb36b KW |
312 | unit, false, -1, false, |
313 | BLOCKDEV_ON_ERROR_AUTO, | |
314 | BLOCKDEV_ON_ERROR_AUTO, | |
315 | NULL, &error_fatal); | |
d52affa7 | 316 | } |
42e766a2 | 317 | loc_pop(&loc); |
d52affa7 | 318 | } |
89b08ae1 | 319 | |
12a08998 PB |
320 | static int32_t scsi_invalid_field(SCSIRequest *req, uint8_t *buf) |
321 | { | |
322 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
323 | scsi_req_complete(req, CHECK_CONDITION); | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static const struct SCSIReqOps reqops_invalid_field = { | |
328 | .size = sizeof(SCSIRequest), | |
329 | .send_command = scsi_invalid_field | |
330 | }; | |
331 | ||
afa46c46 PB |
332 | /* SCSIReqOps implementation for invalid commands. */ |
333 | ||
334 | static int32_t scsi_invalid_command(SCSIRequest *req, uint8_t *buf) | |
335 | { | |
336 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); | |
337 | scsi_req_complete(req, CHECK_CONDITION); | |
338 | return 0; | |
339 | } | |
340 | ||
adcf2754 | 341 | static const struct SCSIReqOps reqops_invalid_opcode = { |
afa46c46 PB |
342 | .size = sizeof(SCSIRequest), |
343 | .send_command = scsi_invalid_command | |
344 | }; | |
345 | ||
6dc06f08 PB |
346 | /* SCSIReqOps implementation for unit attention conditions. */ |
347 | ||
348 | static int32_t scsi_unit_attention(SCSIRequest *req, uint8_t *buf) | |
349 | { | |
0bf8264e | 350 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { |
6dc06f08 PB |
351 | scsi_req_build_sense(req, req->dev->unit_attention); |
352 | } else if (req->bus->unit_attention.key == UNIT_ATTENTION) { | |
353 | scsi_req_build_sense(req, req->bus->unit_attention); | |
354 | } | |
355 | scsi_req_complete(req, CHECK_CONDITION); | |
356 | return 0; | |
357 | } | |
358 | ||
adcf2754 | 359 | static const struct SCSIReqOps reqops_unit_attention = { |
6dc06f08 PB |
360 | .size = sizeof(SCSIRequest), |
361 | .send_command = scsi_unit_attention | |
362 | }; | |
363 | ||
fdaef069 PB |
364 | /* SCSIReqOps implementation for REPORT LUNS and for commands sent to |
365 | an invalid LUN. */ | |
366 | ||
367 | typedef struct SCSITargetReq SCSITargetReq; | |
368 | ||
369 | struct SCSITargetReq { | |
370 | SCSIRequest req; | |
371 | int len; | |
84642435 AH |
372 | uint8_t *buf; |
373 | int buf_len; | |
fdaef069 PB |
374 | }; |
375 | ||
376 | static void store_lun(uint8_t *outbuf, int lun) | |
377 | { | |
378 | if (lun < 256) { | |
379 | outbuf[1] = lun; | |
380 | return; | |
381 | } | |
382 | outbuf[1] = (lun & 255); | |
383 | outbuf[0] = (lun >> 8) | 0x40; | |
384 | } | |
385 | ||
386 | static bool scsi_target_emulate_report_luns(SCSITargetReq *r) | |
387 | { | |
0866aca1 | 388 | BusChild *kid; |
ba74307c | 389 | int i, len, n; |
0d3545e7 | 390 | int channel, id; |
ba74307c PB |
391 | bool found_lun0; |
392 | ||
fdaef069 PB |
393 | if (r->req.cmd.xfer < 16) { |
394 | return false; | |
395 | } | |
396 | if (r->req.cmd.buf[2] > 2) { | |
397 | return false; | |
398 | } | |
0d3545e7 | 399 | channel = r->req.dev->channel; |
ba74307c PB |
400 | id = r->req.dev->id; |
401 | found_lun0 = false; | |
402 | n = 0; | |
0866aca1 AL |
403 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
404 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 405 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 406 | |
0d3545e7 | 407 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
408 | if (dev->lun == 0) { |
409 | found_lun0 = true; | |
410 | } | |
411 | n += 8; | |
412 | } | |
413 | } | |
414 | if (!found_lun0) { | |
415 | n += 8; | |
416 | } | |
ba74307c | 417 | |
84642435 AH |
418 | scsi_target_alloc_buf(&r->req, n + 8); |
419 | ||
420 | len = MIN(n + 8, r->req.cmd.xfer & ~7); | |
fdaef069 | 421 | memset(r->buf, 0, len); |
84642435 | 422 | stl_be_p(&r->buf[0], n); |
ba74307c | 423 | i = found_lun0 ? 8 : 16; |
0866aca1 AL |
424 | QTAILQ_FOREACH(kid, &r->req.bus->qbus.children, sibling) { |
425 | DeviceState *qdev = kid->child; | |
b9eea3e6 | 426 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
ba74307c | 427 | |
0d3545e7 | 428 | if (dev->channel == channel && dev->id == id) { |
ba74307c PB |
429 | store_lun(&r->buf[i], dev->lun); |
430 | i += 8; | |
431 | } | |
fdaef069 | 432 | } |
ba74307c PB |
433 | assert(i == n + 8); |
434 | r->len = len; | |
fdaef069 PB |
435 | return true; |
436 | } | |
437 | ||
438 | static bool scsi_target_emulate_inquiry(SCSITargetReq *r) | |
439 | { | |
440 | assert(r->req.dev->lun != r->req.lun); | |
84642435 AH |
441 | |
442 | scsi_target_alloc_buf(&r->req, SCSI_INQUIRY_LEN); | |
443 | ||
fdaef069 PB |
444 | if (r->req.cmd.buf[1] & 0x2) { |
445 | /* Command support data - optional, not implemented */ | |
446 | return false; | |
447 | } | |
448 | ||
449 | if (r->req.cmd.buf[1] & 0x1) { | |
450 | /* Vital product data */ | |
451 | uint8_t page_code = r->req.cmd.buf[2]; | |
fdaef069 PB |
452 | r->buf[r->len++] = page_code ; /* this page */ |
453 | r->buf[r->len++] = 0x00; | |
454 | ||
455 | switch (page_code) { | |
456 | case 0x00: /* Supported page codes, mandatory */ | |
457 | { | |
458 | int pages; | |
459 | pages = r->len++; | |
460 | r->buf[r->len++] = 0x00; /* list of supported pages (this page) */ | |
461 | r->buf[pages] = r->len - pages - 1; /* number of pages */ | |
462 | break; | |
463 | } | |
464 | default: | |
465 | return false; | |
466 | } | |
467 | /* done with EVPD */ | |
84642435 | 468 | assert(r->len < r->buf_len); |
fdaef069 PB |
469 | r->len = MIN(r->req.cmd.xfer, r->len); |
470 | return true; | |
471 | } | |
472 | ||
473 | /* Standard INQUIRY data */ | |
474 | if (r->req.cmd.buf[2] != 0) { | |
475 | return false; | |
476 | } | |
477 | ||
478 | /* PAGE CODE == 0 */ | |
84642435 | 479 | r->len = MIN(r->req.cmd.xfer, SCSI_INQUIRY_LEN); |
fdaef069 PB |
480 | memset(r->buf, 0, r->len); |
481 | if (r->req.lun != 0) { | |
482 | r->buf[0] = TYPE_NO_LUN; | |
483 | } else { | |
484 | r->buf[0] = TYPE_NOT_PRESENT | TYPE_INACTIVE; | |
485 | r->buf[2] = 5; /* Version */ | |
486 | r->buf[3] = 2 | 0x10; /* HiSup, response data format */ | |
487 | r->buf[4] = r->len - 5; /* Additional Length = (Len - 1) - 4 */ | |
afd4030c | 488 | r->buf[7] = 0x10 | (r->req.bus->info->tcq ? 0x02 : 0); /* Sync, TCQ. */ |
fdaef069 PB |
489 | memcpy(&r->buf[8], "QEMU ", 8); |
490 | memcpy(&r->buf[16], "QEMU TARGET ", 16); | |
35c2c8dc | 491 | pstrcpy((char *) &r->buf[32], 4, qemu_hw_version()); |
fdaef069 PB |
492 | } |
493 | return true; | |
494 | } | |
495 | ||
6959e508 JL |
496 | static size_t scsi_sense_len(SCSIRequest *req) |
497 | { | |
498 | if (req->dev->type == TYPE_SCANNER) | |
499 | return SCSI_SENSE_LEN_SCANNER; | |
500 | else | |
501 | return SCSI_SENSE_LEN; | |
502 | } | |
503 | ||
fdaef069 PB |
504 | static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf) |
505 | { | |
506 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
b07fbce6 | 507 | int fixed_sense = (req->cmd.buf[1] & 1) == 0; |
fdaef069 | 508 | |
b07fbce6 HR |
509 | if (req->lun != 0 && |
510 | buf[0] != INQUIRY && buf[0] != REQUEST_SENSE) { | |
ded6ddc5 HR |
511 | scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED)); |
512 | scsi_req_complete(req, CHECK_CONDITION); | |
513 | return 0; | |
514 | } | |
fdaef069 PB |
515 | switch (buf[0]) { |
516 | case REPORT_LUNS: | |
517 | if (!scsi_target_emulate_report_luns(r)) { | |
518 | goto illegal_request; | |
519 | } | |
520 | break; | |
521 | case INQUIRY: | |
522 | if (!scsi_target_emulate_inquiry(r)) { | |
523 | goto illegal_request; | |
524 | } | |
525 | break; | |
739df215 | 526 | case REQUEST_SENSE: |
6959e508 | 527 | scsi_target_alloc_buf(&r->req, scsi_sense_len(req)); |
b07fbce6 HR |
528 | if (req->lun != 0) { |
529 | const struct SCSISense sense = SENSE_CODE(LUN_NOT_SUPPORTED); | |
530 | ||
f68d98b2 PB |
531 | r->len = scsi_build_sense_buf(r->buf, req->cmd.xfer, |
532 | sense, fixed_sense); | |
b07fbce6 HR |
533 | } else { |
534 | r->len = scsi_device_get_sense(r->req.dev, r->buf, | |
535 | MIN(req->cmd.xfer, r->buf_len), | |
536 | fixed_sense); | |
537 | } | |
3653d8c4 | 538 | if (r->req.dev->sense_is_ua) { |
b9eea3e6 | 539 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
540 | r->req.dev->sense_len = 0; |
541 | r->req.dev->sense_is_ua = false; | |
542 | } | |
739df215 | 543 | break; |
1cb27d92 PB |
544 | case TEST_UNIT_READY: |
545 | break; | |
fdaef069 | 546 | default: |
ded6ddc5 | 547 | scsi_req_build_sense(req, SENSE_CODE(INVALID_OPCODE)); |
fdaef069 PB |
548 | scsi_req_complete(req, CHECK_CONDITION); |
549 | return 0; | |
550 | illegal_request: | |
551 | scsi_req_build_sense(req, SENSE_CODE(INVALID_FIELD)); | |
552 | scsi_req_complete(req, CHECK_CONDITION); | |
553 | return 0; | |
554 | } | |
555 | ||
556 | if (!r->len) { | |
557 | scsi_req_complete(req, GOOD); | |
558 | } | |
559 | return r->len; | |
560 | } | |
561 | ||
562 | static void scsi_target_read_data(SCSIRequest *req) | |
563 | { | |
564 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
565 | uint32_t n; | |
566 | ||
567 | n = r->len; | |
568 | if (n > 0) { | |
569 | r->len = 0; | |
570 | scsi_req_data(&r->req, n); | |
571 | } else { | |
572 | scsi_req_complete(&r->req, GOOD); | |
573 | } | |
574 | } | |
575 | ||
576 | static uint8_t *scsi_target_get_buf(SCSIRequest *req) | |
577 | { | |
578 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
579 | ||
580 | return r->buf; | |
581 | } | |
582 | ||
84642435 AH |
583 | static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len) |
584 | { | |
585 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
586 | ||
587 | r->buf = g_malloc(len); | |
588 | r->buf_len = len; | |
589 | ||
590 | return r->buf; | |
591 | } | |
592 | ||
593 | static void scsi_target_free_buf(SCSIRequest *req) | |
594 | { | |
595 | SCSITargetReq *r = DO_UPCAST(SCSITargetReq, req, req); | |
596 | ||
597 | g_free(r->buf); | |
598 | } | |
599 | ||
adcf2754 | 600 | static const struct SCSIReqOps reqops_target_command = { |
fdaef069 PB |
601 | .size = sizeof(SCSITargetReq), |
602 | .send_command = scsi_target_send_command, | |
603 | .read_data = scsi_target_read_data, | |
604 | .get_buf = scsi_target_get_buf, | |
84642435 | 605 | .free_req = scsi_target_free_buf, |
fdaef069 PB |
606 | }; |
607 | ||
608 | ||
adcf2754 PB |
609 | SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, |
610 | uint32_t tag, uint32_t lun, void *hba_private) | |
89b08ae1 GH |
611 | { |
612 | SCSIRequest *req; | |
cac3c384 PB |
613 | SCSIBus *bus = scsi_bus_from_device(d); |
614 | BusState *qbus = BUS(bus); | |
61e68b3f FZ |
615 | const int memset_off = offsetof(SCSIRequest, sense) |
616 | + sizeof(req->sense); | |
89b08ae1 | 617 | |
633dccb4 | 618 | req = g_malloc(reqops->size); |
61e68b3f | 619 | memset((uint8_t *)req + memset_off, 0, reqops->size - memset_off); |
5c6c0e51 | 620 | req->refcount = 1; |
cac3c384 | 621 | req->bus = bus; |
89b08ae1 GH |
622 | req->dev = d; |
623 | req->tag = tag; | |
624 | req->lun = lun; | |
c5bf71a9 | 625 | req->hba_private = hba_private; |
ed3a34a3 | 626 | req->status = -1; |
8dbd4574 | 627 | req->ops = reqops; |
cac3c384 PB |
628 | object_ref(OBJECT(d)); |
629 | object_ref(OBJECT(qbus->parent)); | |
8e0a9320 | 630 | notifier_list_init(&req->cancel_notifiers); |
5138efec | 631 | trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
89b08ae1 GH |
632 | return req; |
633 | } | |
634 | ||
c5bf71a9 | 635 | SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
c39ce112 | 636 | uint8_t *buf, void *hba_private) |
43a2b339 | 637 | { |
6dc06f08 | 638 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); |
769998a1 | 639 | const SCSIReqOps *ops; |
ff34c32c | 640 | SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(d); |
c39ce112 | 641 | SCSIRequest *req; |
769998a1 PB |
642 | SCSICommand cmd = { .len = 0 }; |
643 | int ret; | |
644 | ||
645 | if ((d->unit_attention.key == UNIT_ATTENTION || | |
646 | bus->unit_attention.key == UNIT_ATTENTION) && | |
647 | (buf[0] != INQUIRY && | |
648 | buf[0] != REPORT_LUNS && | |
649 | buf[0] != GET_CONFIGURATION && | |
650 | buf[0] != GET_EVENT_STATUS_NOTIFICATION && | |
651 | ||
652 | /* | |
653 | * If we already have a pending unit attention condition, | |
654 | * report this one before triggering another one. | |
655 | */ | |
656 | !(buf[0] == REQUEST_SENSE && d->sense_is_ua))) { | |
657 | ops = &reqops_unit_attention; | |
658 | } else if (lun != d->lun || | |
659 | buf[0] == REPORT_LUNS || | |
660 | (buf[0] == REQUEST_SENSE && d->sense_len)) { | |
661 | ops = &reqops_target_command; | |
662 | } else { | |
663 | ops = NULL; | |
664 | } | |
afa46c46 | 665 | |
ff34c32c PB |
666 | if (ops != NULL || !sc->parse_cdb) { |
667 | ret = scsi_req_parse_cdb(d, &cmd, buf); | |
668 | } else { | |
669 | ret = sc->parse_cdb(d, &cmd, buf, hba_private); | |
670 | } | |
671 | ||
769998a1 | 672 | if (ret != 0) { |
afa46c46 PB |
673 | trace_scsi_req_parse_bad(d->id, lun, tag, buf[0]); |
674 | req = scsi_req_alloc(&reqops_invalid_opcode, d, tag, lun, hba_private); | |
675 | } else { | |
769998a1 | 676 | assert(cmd.len != 0); |
afa46c46 PB |
677 | trace_scsi_req_parsed(d->id, lun, tag, buf[0], |
678 | cmd.mode, cmd.xfer); | |
3b6ffe50 | 679 | if (cmd.lba != -1) { |
afa46c46 PB |
680 | trace_scsi_req_parsed_lba(d->id, lun, tag, buf[0], |
681 | cmd.lba); | |
682 | } | |
fdaef069 | 683 | |
12a08998 PB |
684 | if (cmd.xfer > INT32_MAX) { |
685 | req = scsi_req_alloc(&reqops_invalid_field, d, tag, lun, hba_private); | |
769998a1 PB |
686 | } else if (ops) { |
687 | req = scsi_req_alloc(ops, d, tag, lun, hba_private); | |
fdaef069 | 688 | } else { |
b9eea3e6 | 689 | req = scsi_device_alloc_req(d, tag, lun, buf, hba_private); |
fdaef069 | 690 | } |
afa46c46 PB |
691 | } |
692 | ||
693 | req->cmd = cmd; | |
01e95455 PB |
694 | req->resid = req->cmd.xfer; |
695 | ||
98254542 PB |
696 | switch (buf[0]) { |
697 | case INQUIRY: | |
698 | trace_scsi_inquiry(d->id, lun, tag, cmd.buf[1], cmd.buf[2]); | |
699 | break; | |
700 | case TEST_UNIT_READY: | |
701 | trace_scsi_test_unit_ready(d->id, lun, tag); | |
702 | break; | |
703 | case REPORT_LUNS: | |
704 | trace_scsi_report_luns(d->id, lun, tag); | |
705 | break; | |
706 | case REQUEST_SENSE: | |
707 | trace_scsi_request_sense(d->id, lun, tag); | |
708 | break; | |
709 | default: | |
710 | break; | |
711 | } | |
712 | ||
c39ce112 | 713 | return req; |
43a2b339 PB |
714 | } |
715 | ||
0c34459b PB |
716 | uint8_t *scsi_req_get_buf(SCSIRequest *req) |
717 | { | |
12010e7b | 718 | return req->ops->get_buf(req); |
0c34459b PB |
719 | } |
720 | ||
6dc06f08 PB |
721 | static void scsi_clear_unit_attention(SCSIRequest *req) |
722 | { | |
723 | SCSISense *ua; | |
724 | if (req->dev->unit_attention.key != UNIT_ATTENTION && | |
725 | req->bus->unit_attention.key != UNIT_ATTENTION) { | |
726 | return; | |
727 | } | |
728 | ||
729 | /* | |
730 | * If an INQUIRY command enters the enabled command state, | |
731 | * the device server shall [not] clear any unit attention condition; | |
732 | * See also MMC-6, paragraphs 6.5 and 6.6.2. | |
733 | */ | |
734 | if (req->cmd.buf[0] == INQUIRY || | |
735 | req->cmd.buf[0] == GET_CONFIGURATION || | |
736 | req->cmd.buf[0] == GET_EVENT_STATUS_NOTIFICATION) { | |
737 | return; | |
738 | } | |
739 | ||
740 | if (req->dev->unit_attention.key == UNIT_ATTENTION) { | |
741 | ua = &req->dev->unit_attention; | |
742 | } else { | |
743 | ua = &req->bus->unit_attention; | |
744 | } | |
745 | ||
746 | /* | |
747 | * If a REPORT LUNS command enters the enabled command state, [...] | |
748 | * the device server shall clear any pending unit attention condition | |
749 | * with an additional sense code of REPORTED LUNS DATA HAS CHANGED. | |
750 | */ | |
751 | if (req->cmd.buf[0] == REPORT_LUNS && | |
752 | !(ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc && | |
753 | ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq)) { | |
754 | return; | |
755 | } | |
756 | ||
757 | *ua = SENSE_CODE(NO_SENSE); | |
758 | } | |
759 | ||
74382217 HR |
760 | int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
761 | { | |
6dc06f08 PB |
762 | int ret; |
763 | ||
b45ef674 PB |
764 | assert(len >= 14); |
765 | if (!req->sense_len) { | |
74382217 HR |
766 | return 0; |
767 | } | |
6dc06f08 | 768 | |
37b6045c | 769 | ret = scsi_convert_sense(req->sense, req->sense_len, buf, len, true); |
6dc06f08 PB |
770 | |
771 | /* | |
772 | * FIXME: clearing unit attention conditions upon autosense should be done | |
773 | * only if the UA_INTLCK_CTRL field in the Control mode page is set to 00b | |
774 | * (SAM-5, 5.14). | |
775 | * | |
776 | * We assume UA_INTLCK_CTRL to be 00b for HBAs that support autosense, and | |
777 | * 10b for HBAs that do not support it (do not call scsi_req_get_sense). | |
3653d8c4 | 778 | * Here we handle unit attention clearing for UA_INTLCK_CTRL == 00b. |
6dc06f08 | 779 | */ |
3653d8c4 | 780 | if (req->dev->sense_is_ua) { |
b9eea3e6 | 781 | scsi_device_unit_attention_reported(req->dev); |
3653d8c4 PB |
782 | req->dev->sense_len = 0; |
783 | req->dev->sense_is_ua = false; | |
784 | } | |
6dc06f08 | 785 | return ret; |
b45ef674 PB |
786 | } |
787 | ||
788 | int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed) | |
789 | { | |
37b6045c | 790 | return scsi_convert_sense(dev->sense, dev->sense_len, buf, len, fixed); |
b45ef674 PB |
791 | } |
792 | ||
793 | void scsi_req_build_sense(SCSIRequest *req, SCSISense sense) | |
794 | { | |
795 | trace_scsi_req_build_sense(req->dev->id, req->lun, req->tag, | |
796 | sense.key, sense.asc, sense.ascq); | |
a3760467 | 797 | req->sense_len = scsi_build_sense(req->sense, sense); |
74382217 HR |
798 | } |
799 | ||
63f740dd | 800 | static void scsi_req_enqueue_internal(SCSIRequest *req) |
89b08ae1 | 801 | { |
5c6c0e51 HR |
802 | assert(!req->enqueued); |
803 | scsi_req_ref(req); | |
3d5aba97 PB |
804 | if (req->bus->info->get_sg_list) { |
805 | req->sg = req->bus->info->get_sg_list(req); | |
806 | } else { | |
807 | req->sg = NULL; | |
808 | } | |
5c6c0e51 HR |
809 | req->enqueued = true; |
810 | QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); | |
63f740dd | 811 | } |
fc4f0754 | 812 | |
63f740dd PB |
813 | int32_t scsi_req_enqueue(SCSIRequest *req) |
814 | { | |
815 | int32_t rc; | |
816 | ||
817 | assert(!req->retry); | |
818 | scsi_req_enqueue_internal(req); | |
fc4f0754 | 819 | scsi_req_ref(req); |
c39ce112 | 820 | rc = req->ops->send_command(req, req->cmd.buf); |
fc4f0754 PB |
821 | scsi_req_unref(req); |
822 | return rc; | |
89b08ae1 GH |
823 | } |
824 | ||
a1f0cce2 | 825 | static void scsi_req_dequeue(SCSIRequest *req) |
e8637c90 | 826 | { |
5138efec | 827 | trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
71544d30 | 828 | req->retry = false; |
e8637c90 JK |
829 | if (req->enqueued) { |
830 | QTAILQ_REMOVE(&req->dev->requests, req, next); | |
831 | req->enqueued = false; | |
ad2d30f7 | 832 | scsi_req_unref(req); |
e8637c90 JK |
833 | } |
834 | } | |
835 | ||
06b86357 PB |
836 | static int scsi_get_performance_length(int num_desc, int type, int data_type) |
837 | { | |
838 | /* MMC-6, paragraph 6.7. */ | |
839 | switch (type) { | |
840 | case 0: | |
841 | if ((data_type & 3) == 0) { | |
842 | /* Each descriptor is as in Table 295 - Nominal performance. */ | |
843 | return 16 * num_desc + 8; | |
844 | } else { | |
845 | /* Each descriptor is as in Table 296 - Exceptions. */ | |
846 | return 6 * num_desc + 8; | |
847 | } | |
848 | case 1: | |
849 | case 4: | |
850 | case 5: | |
851 | return 8 * num_desc + 8; | |
852 | case 2: | |
853 | return 2048 * num_desc + 8; | |
854 | case 3: | |
855 | return 16 * num_desc + 8; | |
856 | default: | |
857 | return 8; | |
858 | } | |
859 | } | |
860 | ||
e4b65262 CM |
861 | static int ata_passthrough_xfer_unit(SCSIDevice *dev, uint8_t *buf) |
862 | { | |
863 | int byte_block = (buf[2] >> 2) & 0x1; | |
864 | int type = (buf[2] >> 4) & 0x1; | |
865 | int xfer_unit; | |
866 | ||
867 | if (byte_block) { | |
868 | if (type) { | |
869 | xfer_unit = dev->blocksize; | |
870 | } else { | |
871 | xfer_unit = 512; | |
872 | } | |
873 | } else { | |
874 | xfer_unit = 1; | |
875 | } | |
876 | ||
877 | return xfer_unit; | |
878 | } | |
879 | ||
1894df02 | 880 | static int ata_passthrough_12_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
881 | { |
882 | int length = buf[2] & 0x3; | |
883 | int xfer; | |
884 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
885 | ||
886 | switch (length) { | |
887 | case 0: | |
888 | case 3: /* USB-specific. */ | |
d83c951c | 889 | default: |
e4b65262 CM |
890 | xfer = 0; |
891 | break; | |
892 | case 1: | |
893 | xfer = buf[3]; | |
894 | break; | |
895 | case 2: | |
896 | xfer = buf[4]; | |
897 | break; | |
898 | } | |
899 | ||
900 | return xfer * unit; | |
901 | } | |
902 | ||
1894df02 | 903 | static int ata_passthrough_16_xfer(SCSIDevice *dev, uint8_t *buf) |
e4b65262 CM |
904 | { |
905 | int extend = buf[1] & 0x1; | |
906 | int length = buf[2] & 0x3; | |
907 | int xfer; | |
908 | int unit = ata_passthrough_xfer_unit(dev, buf); | |
909 | ||
910 | switch (length) { | |
911 | case 0: | |
912 | case 3: /* USB-specific. */ | |
d83c951c | 913 | default: |
e4b65262 CM |
914 | xfer = 0; |
915 | break; | |
916 | case 1: | |
917 | xfer = buf[4]; | |
918 | xfer |= (extend ? buf[3] << 8 : 0); | |
919 | break; | |
920 | case 2: | |
921 | xfer = buf[6]; | |
922 | xfer |= (extend ? buf[5] << 8 : 0); | |
923 | break; | |
924 | } | |
925 | ||
926 | return xfer * unit; | |
927 | } | |
928 | ||
1894df02 | 929 | static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
bb729f75 | 930 | { |
1894df02 | 931 | cmd->xfer = scsi_cdb_xfer(buf); |
2599aece | 932 | switch (buf[0]) { |
2ec749cb | 933 | case TEST_UNIT_READY: |
5e30a07d | 934 | case REWIND: |
2ec749cb | 935 | case START_STOP: |
00a01ad4 | 936 | case SET_CAPACITY: |
2ec749cb | 937 | case WRITE_FILEMARKS: |
06b86357 | 938 | case WRITE_FILEMARKS_16: |
2ec749cb | 939 | case SPACE: |
a5e3d9ef BK |
940 | case RESERVE: |
941 | case RELEASE: | |
2ec749cb GH |
942 | case ERASE: |
943 | case ALLOW_MEDIUM_REMOVAL: | |
2ec749cb GH |
944 | case SEEK_10: |
945 | case SYNCHRONIZE_CACHE: | |
06b86357 PB |
946 | case SYNCHRONIZE_CACHE_16: |
947 | case LOCATE_16: | |
2ec749cb | 948 | case LOCK_UNLOCK_CACHE: |
2ec749cb GH |
949 | case SET_CD_SPEED: |
950 | case SET_LIMITS: | |
5e30a07d | 951 | case WRITE_LONG_10: |
2ec749cb | 952 | case UPDATE_BLOCK: |
06b86357 PB |
953 | case RESERVE_TRACK: |
954 | case SET_READ_AHEAD: | |
955 | case PRE_FETCH: | |
956 | case PRE_FETCH_16: | |
957 | case ALLOW_OVERWRITE: | |
2599aece | 958 | cmd->xfer = 0; |
2ec749cb | 959 | break; |
d12ad44c PB |
960 | case VERIFY_10: |
961 | case VERIFY_12: | |
962 | case VERIFY_16: | |
963 | if ((buf[1] & 2) == 0) { | |
964 | cmd->xfer = 0; | |
7ef8cf9a | 965 | } else if ((buf[1] & 4) != 0) { |
d12ad44c PB |
966 | cmd->xfer = 1; |
967 | } | |
968 | cmd->xfer *= dev->blocksize; | |
969 | break; | |
2ec749cb GH |
970 | case MODE_SENSE: |
971 | break; | |
5e30a07d | 972 | case WRITE_SAME_10: |
a5ee9085 | 973 | case WRITE_SAME_16: |
4397a018 | 974 | cmd->xfer = buf[1] & 1 ? 0 : dev->blocksize; |
2ec749cb | 975 | break; |
5e30a07d | 976 | case READ_CAPACITY_10: |
2599aece | 977 | cmd->xfer = 8; |
2ec749cb GH |
978 | break; |
979 | case READ_BLOCK_LIMITS: | |
2599aece | 980 | cmd->xfer = 6; |
2ec749cb | 981 | break; |
2ec749cb | 982 | case SEND_VOLUME_TAG: |
06b86357 PB |
983 | /* GPCMD_SET_STREAMING from multimedia commands. */ |
984 | if (dev->type == TYPE_ROM) { | |
985 | cmd->xfer = buf[10] | (buf[9] << 8); | |
986 | } else { | |
987 | cmd->xfer = buf[9] | (buf[8] << 8); | |
988 | } | |
2ec749cb | 989 | break; |
f62d0594 PB |
990 | case WRITE_6: |
991 | /* length 0 means 256 blocks */ | |
992 | if (cmd->xfer == 0) { | |
993 | cmd->xfer = 256; | |
994 | } | |
c4ce4c4b | 995 | /* fall through */ |
2ec749cb | 996 | case WRITE_10: |
5e30a07d | 997 | case WRITE_VERIFY_10: |
2ec749cb GH |
998 | case WRITE_12: |
999 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1000 | case WRITE_16: |
1001 | case WRITE_VERIFY_16: | |
2599aece | 1002 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1003 | break; |
2ec749cb GH |
1004 | case READ_6: |
1005 | case READ_REVERSE: | |
f62d0594 PB |
1006 | /* length 0 means 256 blocks */ |
1007 | if (cmd->xfer == 0) { | |
1008 | cmd->xfer = 256; | |
1009 | } | |
c4ce4c4b | 1010 | /* fall through */ |
f62d0594 | 1011 | case READ_10: |
2ec749cb | 1012 | case READ_12: |
bd536cf3 | 1013 | case READ_16: |
2599aece | 1014 | cmd->xfer *= dev->blocksize; |
2ec749cb | 1015 | break; |
06b86357 PB |
1016 | case FORMAT_UNIT: |
1017 | /* MMC mandates the parameter list to be 12-bytes long. Parameters | |
1018 | * for block devices are restricted to the header right now. */ | |
1019 | if (dev->type == TYPE_ROM && (buf[1] & 16)) { | |
1020 | cmd->xfer = 12; | |
1021 | } else { | |
1022 | cmd->xfer = (buf[1] & 16) == 0 ? 0 : (buf[1] & 32 ? 8 : 4); | |
1023 | } | |
1024 | break; | |
2ec749cb | 1025 | case INQUIRY: |
06b86357 PB |
1026 | case RECEIVE_DIAGNOSTIC: |
1027 | case SEND_DIAGNOSTIC: | |
2599aece | 1028 | cmd->xfer = buf[4] | (buf[3] << 8); |
2ec749cb | 1029 | break; |
06b86357 PB |
1030 | case READ_CD: |
1031 | case READ_BUFFER: | |
1032 | case WRITE_BUFFER: | |
1033 | case SEND_CUE_SHEET: | |
1034 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1035 | break; | |
1036 | case PERSISTENT_RESERVE_OUT: | |
1037 | cmd->xfer = ldl_be_p(&buf[5]) & 0xffffffffULL; | |
1038 | break; | |
1039 | case ERASE_12: | |
1040 | if (dev->type == TYPE_ROM) { | |
1041 | /* MMC command GET PERFORMANCE. */ | |
1042 | cmd->xfer = scsi_get_performance_length(buf[9] | (buf[8] << 8), | |
1043 | buf[10], buf[1] & 0x1f); | |
1044 | } | |
1045 | break; | |
1046 | case MECHANISM_STATUS: | |
1047 | case READ_DVD_STRUCTURE: | |
1048 | case SEND_DVD_STRUCTURE: | |
c7126d5b NB |
1049 | case MAINTENANCE_OUT: |
1050 | case MAINTENANCE_IN: | |
2599aece | 1051 | if (dev->type == TYPE_ROM) { |
c7126d5b | 1052 | /* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */ |
2599aece | 1053 | cmd->xfer = buf[9] | (buf[8] << 8); |
c7126d5b NB |
1054 | } |
1055 | break; | |
e4b65262 CM |
1056 | case ATA_PASSTHROUGH_12: |
1057 | if (dev->type == TYPE_ROM) { | |
1058 | /* BLANK command of MMC */ | |
1059 | cmd->xfer = 0; | |
1060 | } else { | |
1894df02 | 1061 | cmd->xfer = ata_passthrough_12_xfer(dev, buf); |
e4b65262 CM |
1062 | } |
1063 | break; | |
1064 | case ATA_PASSTHROUGH_16: | |
1894df02 | 1065 | cmd->xfer = ata_passthrough_16_xfer(dev, buf); |
e4b65262 | 1066 | break; |
2ec749cb GH |
1067 | } |
1068 | return 0; | |
1069 | } | |
1070 | ||
1894df02 | 1071 | static int scsi_req_stream_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
2ec749cb | 1072 | { |
2599aece | 1073 | switch (buf[0]) { |
2ec749cb | 1074 | /* stream commands */ |
06b86357 PB |
1075 | case ERASE_12: |
1076 | case ERASE_16: | |
1077 | cmd->xfer = 0; | |
1078 | break; | |
2ec749cb GH |
1079 | case READ_6: |
1080 | case READ_REVERSE: | |
1081 | case RECOVER_BUFFERED_DATA: | |
1082 | case WRITE_6: | |
2599aece PB |
1083 | cmd->xfer = buf[4] | (buf[3] << 8) | (buf[2] << 16); |
1084 | if (buf[1] & 0x01) { /* fixed */ | |
1085 | cmd->xfer *= dev->blocksize; | |
1086 | } | |
2ec749cb | 1087 | break; |
065c2599 PB |
1088 | case READ_16: |
1089 | case READ_REVERSE_16: | |
1090 | case VERIFY_16: | |
1091 | case WRITE_16: | |
065c2599 PB |
1092 | cmd->xfer = buf[14] | (buf[13] << 8) | (buf[12] << 16); |
1093 | if (buf[1] & 0x01) { /* fixed */ | |
1094 | cmd->xfer *= dev->blocksize; | |
1095 | } | |
1096 | break; | |
2ec749cb | 1097 | case REWIND: |
15e58a21 | 1098 | case LOAD_UNLOAD: |
2599aece | 1099 | cmd->xfer = 0; |
2ec749cb | 1100 | break; |
06b86357 PB |
1101 | case SPACE_16: |
1102 | cmd->xfer = buf[13] | (buf[12] << 8); | |
1103 | break; | |
1104 | case READ_POSITION: | |
9ce1bb2d CH |
1105 | switch (buf[1] & 0x1f) /* operation code */ { |
1106 | case SHORT_FORM_BLOCK_ID: | |
1107 | case SHORT_FORM_VENDOR_SPECIFIC: | |
1108 | cmd->xfer = 20; | |
1109 | break; | |
1110 | case LONG_FORM: | |
1111 | cmd->xfer = 32; | |
1112 | break; | |
1113 | case EXTENDED_FORM: | |
1114 | cmd->xfer = buf[8] | (buf[7] << 8); | |
1115 | break; | |
1116 | default: | |
1117 | return -1; | |
1118 | } | |
1119 | ||
06b86357 PB |
1120 | break; |
1121 | case FORMAT_UNIT: | |
1122 | cmd->xfer = buf[4] | (buf[3] << 8); | |
1123 | break; | |
2ec749cb GH |
1124 | /* generic commands */ |
1125 | default: | |
1894df02 | 1126 | return scsi_req_xfer(cmd, dev, buf); |
2ec749cb GH |
1127 | } |
1128 | return 0; | |
1129 | } | |
1130 | ||
1894df02 | 1131 | static int scsi_req_medium_changer_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
40723a99 CH |
1132 | { |
1133 | switch (buf[0]) { | |
1134 | /* medium changer commands */ | |
1135 | case EXCHANGE_MEDIUM: | |
1136 | case INITIALIZE_ELEMENT_STATUS: | |
1137 | case INITIALIZE_ELEMENT_STATUS_WITH_RANGE: | |
1138 | case MOVE_MEDIUM: | |
1139 | case POSITION_TO_ELEMENT: | |
1140 | cmd->xfer = 0; | |
1141 | break; | |
1142 | case READ_ELEMENT_STATUS: | |
1143 | cmd->xfer = buf[9] | (buf[8] << 8) | (buf[7] << 16); | |
1144 | break; | |
1145 | ||
1146 | /* generic commands */ | |
1147 | default: | |
1894df02 | 1148 | return scsi_req_xfer(cmd, dev, buf); |
40723a99 CH |
1149 | } |
1150 | return 0; | |
1151 | } | |
1152 | ||
297b044a JL |
1153 | static int scsi_req_scanner_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf) |
1154 | { | |
1155 | switch (buf[0]) { | |
1156 | /* Scanner commands */ | |
1157 | case OBJECT_POSITION: | |
1158 | cmd->xfer = 0; | |
1159 | break; | |
1160 | case SCAN: | |
1161 | cmd->xfer = buf[4]; | |
1162 | break; | |
1163 | case READ_10: | |
1164 | case SEND: | |
1165 | case GET_WINDOW: | |
1166 | case SET_WINDOW: | |
1167 | cmd->xfer = buf[8] | (buf[7] << 8) | (buf[6] << 16); | |
1168 | break; | |
1169 | default: | |
1170 | /* GET_DATA_BUFFER_STATUS xfer handled by scsi_req_xfer */ | |
1171 | return scsi_req_xfer(cmd, dev, buf); | |
1172 | } | |
1173 | ||
1174 | return 0; | |
1175 | } | |
40723a99 | 1176 | |
2599aece | 1177 | static void scsi_cmd_xfer_mode(SCSICommand *cmd) |
97a06435 | 1178 | { |
a5ee9085 PB |
1179 | if (!cmd->xfer) { |
1180 | cmd->mode = SCSI_XFER_NONE; | |
1181 | return; | |
1182 | } | |
2599aece | 1183 | switch (cmd->buf[0]) { |
97a06435 GH |
1184 | case WRITE_6: |
1185 | case WRITE_10: | |
5e30a07d | 1186 | case WRITE_VERIFY_10: |
97a06435 GH |
1187 | case WRITE_12: |
1188 | case WRITE_VERIFY_12: | |
bd536cf3 GH |
1189 | case WRITE_16: |
1190 | case WRITE_VERIFY_16: | |
d12ad44c PB |
1191 | case VERIFY_10: |
1192 | case VERIFY_12: | |
1193 | case VERIFY_16: | |
97a06435 GH |
1194 | case COPY: |
1195 | case COPY_VERIFY: | |
1196 | case COMPARE: | |
1197 | case CHANGE_DEFINITION: | |
1198 | case LOG_SELECT: | |
1199 | case MODE_SELECT: | |
1200 | case MODE_SELECT_10: | |
1201 | case SEND_DIAGNOSTIC: | |
1202 | case WRITE_BUFFER: | |
1203 | case FORMAT_UNIT: | |
1204 | case REASSIGN_BLOCKS: | |
97a06435 GH |
1205 | case SEARCH_EQUAL: |
1206 | case SEARCH_HIGH: | |
1207 | case SEARCH_LOW: | |
1208 | case UPDATE_BLOCK: | |
5e30a07d HR |
1209 | case WRITE_LONG_10: |
1210 | case WRITE_SAME_10: | |
a5ee9085 | 1211 | case WRITE_SAME_16: |
381b634c | 1212 | case UNMAP: |
97a06435 GH |
1213 | case SEARCH_HIGH_12: |
1214 | case SEARCH_EQUAL_12: | |
1215 | case SEARCH_LOW_12: | |
97a06435 GH |
1216 | case MEDIUM_SCAN: |
1217 | case SEND_VOLUME_TAG: | |
06b86357 PB |
1218 | case SEND_CUE_SHEET: |
1219 | case SEND_DVD_STRUCTURE: | |
01bedeba | 1220 | case PERSISTENT_RESERVE_OUT: |
c7126d5b | 1221 | case MAINTENANCE_OUT: |
297b044a JL |
1222 | case SET_WINDOW: |
1223 | case SCAN: | |
1224 | /* SCAN conflicts with START_STOP. START_STOP has cmd->xfer set to 0 for | |
1225 | * non-scanner devices, so we only get here for SCAN and not for START_STOP. | |
1226 | */ | |
2599aece | 1227 | cmd->mode = SCSI_XFER_TO_DEV; |
97a06435 | 1228 | break; |
e4b65262 CM |
1229 | case ATA_PASSTHROUGH_12: |
1230 | case ATA_PASSTHROUGH_16: | |
1231 | /* T_DIR */ | |
1232 | cmd->mode = (cmd->buf[2] & 0x8) ? | |
1233 | SCSI_XFER_FROM_DEV : SCSI_XFER_TO_DEV; | |
1234 | break; | |
97a06435 | 1235 | default: |
a5ee9085 | 1236 | cmd->mode = SCSI_XFER_FROM_DEV; |
97a06435 GH |
1237 | break; |
1238 | } | |
1239 | } | |
1240 | ||
1894df02 HR |
1241 | int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf) |
1242 | { | |
1243 | int rc; | |
c170aad8 | 1244 | int len; |
1894df02 HR |
1245 | |
1246 | cmd->lba = -1; | |
c170aad8 PB |
1247 | len = scsi_cdb_length(buf); |
1248 | if (len < 0) { | |
1249 | return -1; | |
1250 | } | |
28b70c9d | 1251 | |
c170aad8 | 1252 | cmd->len = len; |
40723a99 CH |
1253 | switch (dev->type) { |
1254 | case TYPE_TAPE: | |
1894df02 | 1255 | rc = scsi_req_stream_xfer(cmd, dev, buf); |
40723a99 CH |
1256 | break; |
1257 | case TYPE_MEDIUM_CHANGER: | |
1894df02 | 1258 | rc = scsi_req_medium_changer_xfer(cmd, dev, buf); |
40723a99 | 1259 | break; |
297b044a JL |
1260 | case TYPE_SCANNER: |
1261 | rc = scsi_req_scanner_length(cmd, dev, buf); | |
1262 | break; | |
40723a99 | 1263 | default: |
1894df02 | 1264 | rc = scsi_req_xfer(cmd, dev, buf); |
40723a99 | 1265 | break; |
2ec749cb | 1266 | } |
40723a99 | 1267 | |
2ec749cb GH |
1268 | if (rc != 0) |
1269 | return rc; | |
1270 | ||
afa46c46 PB |
1271 | memcpy(cmd->buf, buf, cmd->len); |
1272 | scsi_cmd_xfer_mode(cmd); | |
1273 | cmd->lba = scsi_cmd_lba(cmd); | |
2ec749cb GH |
1274 | return 0; |
1275 | } | |
ed3a34a3 | 1276 | |
53200fad PB |
1277 | void scsi_device_report_change(SCSIDevice *dev, SCSISense sense) |
1278 | { | |
1279 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
1280 | ||
1281 | scsi_device_set_ua(dev, sense); | |
1282 | if (bus->info->change) { | |
1283 | bus->info->change(bus, dev, sense); | |
1284 | } | |
1285 | } | |
1286 | ||
ad2d30f7 PB |
1287 | SCSIRequest *scsi_req_ref(SCSIRequest *req) |
1288 | { | |
8e86b93c | 1289 | assert(req->refcount > 0); |
ad2d30f7 PB |
1290 | req->refcount++; |
1291 | return req; | |
1292 | } | |
1293 | ||
1294 | void scsi_req_unref(SCSIRequest *req) | |
1295 | { | |
68bd348a | 1296 | assert(req->refcount > 0); |
ad2d30f7 | 1297 | if (--req->refcount == 0) { |
cac3c384 PB |
1298 | BusState *qbus = req->dev->qdev.parent_bus; |
1299 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, qbus); | |
1300 | ||
8e86b93c PB |
1301 | if (bus->info->free_request && req->hba_private) { |
1302 | bus->info->free_request(bus, req->hba_private); | |
1303 | } | |
12010e7b PB |
1304 | if (req->ops->free_req) { |
1305 | req->ops->free_req(req); | |
ad2d30f7 | 1306 | } |
cac3c384 PB |
1307 | object_unref(OBJECT(req->dev)); |
1308 | object_unref(OBJECT(qbus->parent)); | |
633dccb4 | 1309 | g_free(req); |
ad2d30f7 PB |
1310 | } |
1311 | } | |
1312 | ||
ad3376cc PB |
1313 | /* Tell the device that we finished processing this chunk of I/O. It |
1314 | will start the next chunk or complete the command. */ | |
1315 | void scsi_req_continue(SCSIRequest *req) | |
1316 | { | |
6f6710aa PB |
1317 | if (req->io_canceled) { |
1318 | trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); | |
1319 | return; | |
1320 | } | |
ad3376cc PB |
1321 | trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
1322 | if (req->cmd.mode == SCSI_XFER_TO_DEV) { | |
12010e7b | 1323 | req->ops->write_data(req); |
ad3376cc | 1324 | } else { |
12010e7b | 1325 | req->ops->read_data(req); |
ad3376cc PB |
1326 | } |
1327 | } | |
1328 | ||
ab9adc88 PB |
1329 | /* Called by the devices when data is ready for the HBA. The HBA should |
1330 | start a DMA operation to read or fill the device's data buffer. | |
ad3376cc | 1331 | Once it completes, calling scsi_req_continue will restart I/O. */ |
ab9adc88 PB |
1332 | void scsi_req_data(SCSIRequest *req, int len) |
1333 | { | |
3d5aba97 | 1334 | uint8_t *buf; |
e88c591d PB |
1335 | if (req->io_canceled) { |
1336 | trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len); | |
01e95455 | 1337 | return; |
e88c591d | 1338 | } |
01e95455 PB |
1339 | trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
1340 | assert(req->cmd.mode != SCSI_XFER_NONE); | |
3d5aba97 PB |
1341 | if (!req->sg) { |
1342 | req->resid -= len; | |
1343 | req->bus->info->transfer_data(req, len); | |
1344 | return; | |
1345 | } | |
1346 | ||
1347 | /* If the device calls scsi_req_data and the HBA specified a | |
1348 | * scatter/gather list, the transfer has to happen in a single | |
1349 | * step. */ | |
1350 | assert(!req->dma_started); | |
1351 | req->dma_started = true; | |
1352 | ||
1353 | buf = scsi_req_get_buf(req); | |
1354 | if (req->cmd.mode == SCSI_XFER_FROM_DEV) { | |
1355 | req->resid = dma_buf_read(buf, len, req->sg); | |
1356 | } else { | |
1357 | req->resid = dma_buf_write(buf, len, req->sg); | |
1358 | } | |
1359 | scsi_req_continue(req); | |
ab9adc88 PB |
1360 | } |
1361 | ||
ec766865 GH |
1362 | void scsi_req_print(SCSIRequest *req) |
1363 | { | |
1364 | FILE *fp = stderr; | |
1365 | int i; | |
1366 | ||
1367 | fprintf(fp, "[%s id=%d] %s", | |
1368 | req->dev->qdev.parent_bus->name, | |
1369 | req->dev->id, | |
1370 | scsi_command_name(req->cmd.buf[0])); | |
1371 | for (i = 1; i < req->cmd.len; i++) { | |
1372 | fprintf(fp, " 0x%02x", req->cmd.buf[i]); | |
1373 | } | |
1374 | switch (req->cmd.mode) { | |
1375 | case SCSI_XFER_NONE: | |
1376 | fprintf(fp, " - none\n"); | |
1377 | break; | |
1378 | case SCSI_XFER_FROM_DEV: | |
1379 | fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer); | |
1380 | break; | |
1381 | case SCSI_XFER_TO_DEV: | |
1382 | fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer); | |
1383 | break; | |
1384 | default: | |
1385 | fprintf(fp, " - Oops\n"); | |
1386 | break; | |
1387 | } | |
1388 | } | |
1389 | ||
682a9b21 | 1390 | void scsi_req_complete(SCSIRequest *req, int status) |
ed3a34a3 | 1391 | { |
682a9b21 PB |
1392 | assert(req->status == -1); |
1393 | req->status = status; | |
b45ef674 | 1394 | |
335f560f | 1395 | assert(req->sense_len <= sizeof(req->sense)); |
b45ef674 PB |
1396 | if (status == GOOD) { |
1397 | req->sense_len = 0; | |
1398 | } | |
1399 | ||
1400 | if (req->sense_len) { | |
1401 | memcpy(req->dev->sense, req->sense, req->sense_len); | |
3653d8c4 PB |
1402 | req->dev->sense_len = req->sense_len; |
1403 | req->dev->sense_is_ua = (req->ops == &reqops_unit_attention); | |
1404 | } else { | |
1405 | req->dev->sense_len = 0; | |
1406 | req->dev->sense_is_ua = false; | |
b45ef674 | 1407 | } |
b45ef674 | 1408 | |
6dc06f08 PB |
1409 | /* |
1410 | * Unit attention state is now stored in the device's sense buffer | |
1411 | * if the HBA didn't do autosense. Clear the pending unit attention | |
1412 | * flags. | |
1413 | */ | |
1414 | scsi_clear_unit_attention(req); | |
1415 | ||
ad2d30f7 | 1416 | scsi_req_ref(req); |
e8637c90 | 1417 | scsi_req_dequeue(req); |
01e95455 | 1418 | req->bus->info->complete(req, req->status, req->resid); |
8e0a9320 FZ |
1419 | |
1420 | /* Cancelled requests might end up being completed instead of cancelled */ | |
1421 | notifier_list_notify(&req->cancel_notifiers, req); | |
ad2d30f7 | 1422 | scsi_req_unref(req); |
ed3a34a3 | 1423 | } |
db07c0f8 | 1424 | |
d5776465 FZ |
1425 | /* Called by the devices when the request is canceled. */ |
1426 | void scsi_req_cancel_complete(SCSIRequest *req) | |
1427 | { | |
1428 | assert(req->io_canceled); | |
1429 | if (req->bus->info->cancel) { | |
1430 | req->bus->info->cancel(req); | |
1431 | } | |
8e0a9320 | 1432 | notifier_list_notify(&req->cancel_notifiers, req); |
d5776465 FZ |
1433 | scsi_req_unref(req); |
1434 | } | |
1435 | ||
8e0a9320 FZ |
1436 | /* Cancel @req asynchronously. @notifier is added to @req's cancellation |
1437 | * notifier list, the bus will be notified the requests cancellation is | |
1438 | * completed. | |
1439 | * */ | |
1440 | void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier) | |
1441 | { | |
1442 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); | |
1443 | if (notifier) { | |
1444 | notifier_list_add(&req->cancel_notifiers, notifier); | |
1445 | } | |
3daa4107 PB |
1446 | if (req->io_canceled) { |
1447 | /* A blk_aio_cancel_async is pending; when it finishes, | |
1448 | * scsi_req_cancel_complete will be called and will | |
1449 | * call the notifier we just added. Just wait for that. | |
1450 | */ | |
1451 | assert(req->aiocb); | |
1452 | return; | |
1453 | } | |
1454 | /* Dropped in scsi_req_cancel_complete. */ | |
8e0a9320 FZ |
1455 | scsi_req_ref(req); |
1456 | scsi_req_dequeue(req); | |
1457 | req->io_canceled = true; | |
1458 | if (req->aiocb) { | |
4be74634 | 1459 | blk_aio_cancel_async(req->aiocb); |
2aeba9d8 FZ |
1460 | } else { |
1461 | scsi_req_cancel_complete(req); | |
8e0a9320 FZ |
1462 | } |
1463 | } | |
1464 | ||
94d3f98a PB |
1465 | void scsi_req_cancel(SCSIRequest *req) |
1466 | { | |
814589c4 | 1467 | trace_scsi_req_cancel(req->dev->id, req->lun, req->tag); |
e88c591d PB |
1468 | if (!req->enqueued) { |
1469 | return; | |
94d3f98a | 1470 | } |
3daa4107 PB |
1471 | assert(!req->io_canceled); |
1472 | /* Dropped in scsi_req_cancel_complete. */ | |
94d3f98a PB |
1473 | scsi_req_ref(req); |
1474 | scsi_req_dequeue(req); | |
e88c591d | 1475 | req->io_canceled = true; |
a83cfd12 | 1476 | if (req->aiocb) { |
4be74634 | 1477 | blk_aio_cancel(req->aiocb); |
488eef2f PB |
1478 | } else { |
1479 | scsi_req_cancel_complete(req); | |
e88c591d | 1480 | } |
94d3f98a PB |
1481 | } |
1482 | ||
e48e84ea PB |
1483 | static int scsi_ua_precedence(SCSISense sense) |
1484 | { | |
1485 | if (sense.key != UNIT_ATTENTION) { | |
1486 | return INT_MAX; | |
1487 | } | |
1488 | if (sense.asc == 0x29 && sense.ascq == 0x04) { | |
1489 | /* DEVICE INTERNAL RESET goes with POWER ON OCCURRED */ | |
1490 | return 1; | |
1491 | } else if (sense.asc == 0x3F && sense.ascq == 0x01) { | |
1492 | /* MICROCODE HAS BEEN CHANGED goes with SCSI BUS RESET OCCURRED */ | |
1493 | return 2; | |
1494 | } else if (sense.asc == 0x29 && (sense.ascq == 0x05 || sense.ascq == 0x06)) { | |
1495 | /* These two go with "all others". */ | |
1496 | ; | |
1497 | } else if (sense.asc == 0x29 && sense.ascq <= 0x07) { | |
1498 | /* POWER ON, RESET OR BUS DEVICE RESET OCCURRED = 0 | |
1499 | * POWER ON OCCURRED = 1 | |
1500 | * SCSI BUS RESET OCCURRED = 2 | |
1501 | * BUS DEVICE RESET FUNCTION OCCURRED = 3 | |
1502 | * I_T NEXUS LOSS OCCURRED = 7 | |
1503 | */ | |
1504 | return sense.ascq; | |
1505 | } else if (sense.asc == 0x2F && sense.ascq == 0x01) { | |
1506 | /* COMMANDS CLEARED BY POWER LOSS NOTIFICATION */ | |
1507 | return 8; | |
1508 | } | |
1509 | return (sense.asc << 8) | sense.ascq; | |
1510 | } | |
1511 | ||
1512 | void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense) | |
1513 | { | |
1514 | int prec1, prec2; | |
1515 | if (sense.key != UNIT_ATTENTION) { | |
1516 | return; | |
1517 | } | |
1518 | trace_scsi_device_set_ua(sdev->id, sdev->lun, sense.key, | |
1519 | sense.asc, sense.ascq); | |
1520 | ||
1521 | /* | |
1522 | * Override a pre-existing unit attention condition, except for a more | |
1523 | * important reset condition. | |
1524 | */ | |
1525 | prec1 = scsi_ua_precedence(sdev->unit_attention); | |
1526 | prec2 = scsi_ua_precedence(sense); | |
1527 | if (prec2 < prec1) { | |
1528 | sdev->unit_attention = sense; | |
1529 | } | |
1530 | } | |
1531 | ||
c7b48872 | 1532 | void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense) |
c557e889 PB |
1533 | { |
1534 | SCSIRequest *req; | |
1535 | ||
8aad35f6 | 1536 | aio_context_acquire(blk_get_aio_context(sdev->conf.blk)); |
c557e889 PB |
1537 | while (!QTAILQ_EMPTY(&sdev->requests)) { |
1538 | req = QTAILQ_FIRST(&sdev->requests); | |
8aad35f6 | 1539 | scsi_req_cancel_async(req, NULL); |
c557e889 | 1540 | } |
8aad35f6 PB |
1541 | blk_drain(sdev->conf.blk); |
1542 | aio_context_release(blk_get_aio_context(sdev->conf.blk)); | |
e48e84ea | 1543 | scsi_device_set_ua(sdev, sense); |
c557e889 PB |
1544 | } |
1545 | ||
baa1bd89 PB |
1546 | static char *scsibus_get_dev_path(DeviceState *dev) |
1547 | { | |
e1dc6815 | 1548 | SCSIDevice *d = SCSI_DEVICE(dev); |
baa1bd89 | 1549 | DeviceState *hba = dev->parent_bus->parent; |
09e5ab63 | 1550 | char *id; |
b7c8c35f | 1551 | char *path; |
baa1bd89 | 1552 | |
09e5ab63 | 1553 | id = qdev_get_dev_path(hba); |
baa1bd89 | 1554 | if (id) { |
b7c8c35f | 1555 | path = g_strdup_printf("%s/%d:%d:%d", id, d->channel, d->id, d->lun); |
baa1bd89 | 1556 | } else { |
b7c8c35f | 1557 | path = g_strdup_printf("%d:%d:%d", d->channel, d->id, d->lun); |
baa1bd89 | 1558 | } |
b7c8c35f PB |
1559 | g_free(id); |
1560 | return path; | |
baa1bd89 PB |
1561 | } |
1562 | ||
db07c0f8 GN |
1563 | static char *scsibus_get_fw_dev_path(DeviceState *dev) |
1564 | { | |
b9eea3e6 | 1565 | SCSIDevice *d = SCSI_DEVICE(dev); |
a5cf8262 JM |
1566 | return g_strdup_printf("channel@%x/%s@%x,%x", d->channel, |
1567 | qdev_fw_name(dev), d->id, d->lun); | |
f48a7a6e PB |
1568 | } |
1569 | ||
0d3545e7 | 1570 | SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun) |
f48a7a6e | 1571 | { |
0866aca1 | 1572 | BusChild *kid; |
f48a7a6e | 1573 | SCSIDevice *target_dev = NULL; |
db07c0f8 | 1574 | |
eae3eb3e | 1575 | QTAILQ_FOREACH_REVERSE(kid, &bus->qbus.children, sibling) { |
0866aca1 | 1576 | DeviceState *qdev = kid->child; |
b9eea3e6 | 1577 | SCSIDevice *dev = SCSI_DEVICE(qdev); |
db07c0f8 | 1578 | |
0d3545e7 | 1579 | if (dev->channel == channel && dev->id == id) { |
f48a7a6e PB |
1580 | if (dev->lun == lun) { |
1581 | return dev; | |
1582 | } | |
1583 | target_dev = dev; | |
1584 | } | |
1585 | } | |
1586 | return target_dev; | |
db07c0f8 | 1587 | } |
b9eea3e6 | 1588 | |
63f740dd PB |
1589 | /* SCSI request list. For simplicity, pv points to the whole device */ |
1590 | ||
2c21ee76 | 1591 | static int put_scsi_requests(QEMUFile *f, void *pv, size_t size, |
03fee66f | 1592 | const VMStateField *field, QJSON *vmdesc) |
63f740dd PB |
1593 | { |
1594 | SCSIDevice *s = pv; | |
1595 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
1596 | SCSIRequest *req; | |
1597 | ||
1598 | QTAILQ_FOREACH(req, &s->requests, next) { | |
1599 | assert(!req->io_canceled); | |
1600 | assert(req->status == -1); | |
63f740dd PB |
1601 | assert(req->enqueued); |
1602 | ||
18eef3bc | 1603 | qemu_put_sbyte(f, req->retry ? 1 : 2); |
63f740dd PB |
1604 | qemu_put_buffer(f, req->cmd.buf, sizeof(req->cmd.buf)); |
1605 | qemu_put_be32s(f, &req->tag); | |
1606 | qemu_put_be32s(f, &req->lun); | |
1607 | if (bus->info->save_request) { | |
1608 | bus->info->save_request(f, req); | |
1609 | } | |
1610 | if (req->ops->save_request) { | |
1611 | req->ops->save_request(f, req); | |
1612 | } | |
1613 | } | |
1614 | qemu_put_sbyte(f, 0); | |
2c21ee76 JD |
1615 | |
1616 | return 0; | |
63f740dd PB |
1617 | } |
1618 | ||
2c21ee76 | 1619 | static int get_scsi_requests(QEMUFile *f, void *pv, size_t size, |
03fee66f | 1620 | const VMStateField *field) |
63f740dd PB |
1621 | { |
1622 | SCSIDevice *s = pv; | |
1623 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus); | |
18eef3bc | 1624 | int8_t sbyte; |
63f740dd | 1625 | |
18eef3bc | 1626 | while ((sbyte = qemu_get_sbyte(f)) > 0) { |
63f740dd PB |
1627 | uint8_t buf[SCSI_CMD_BUF_SIZE]; |
1628 | uint32_t tag; | |
1629 | uint32_t lun; | |
1630 | SCSIRequest *req; | |
1631 | ||
1632 | qemu_get_buffer(f, buf, sizeof(buf)); | |
1633 | qemu_get_be32s(f, &tag); | |
1634 | qemu_get_be32s(f, &lun); | |
1635 | req = scsi_req_new(s, tag, lun, buf, NULL); | |
18eef3bc | 1636 | req->retry = (sbyte == 1); |
63f740dd PB |
1637 | if (bus->info->load_request) { |
1638 | req->hba_private = bus->info->load_request(f, req); | |
1639 | } | |
1640 | if (req->ops->load_request) { | |
1641 | req->ops->load_request(f, req); | |
1642 | } | |
1643 | ||
1644 | /* Just restart it later. */ | |
63f740dd PB |
1645 | scsi_req_enqueue_internal(req); |
1646 | ||
1647 | /* At this point, the request will be kept alive by the reference | |
1648 | * added by scsi_req_enqueue_internal, so we can release our reference. | |
1649 | * The HBA of course will add its own reference in the load_request | |
1650 | * callback if it needs to hold on the SCSIRequest. | |
1651 | */ | |
1652 | scsi_req_unref(req); | |
1653 | } | |
1654 | ||
1655 | return 0; | |
1656 | } | |
1657 | ||
12badfc2 | 1658 | static const VMStateInfo vmstate_info_scsi_requests = { |
63f740dd PB |
1659 | .name = "scsi-requests", |
1660 | .get = get_scsi_requests, | |
1661 | .put = put_scsi_requests, | |
1662 | }; | |
1663 | ||
2e323f03 FZ |
1664 | static bool scsi_sense_state_needed(void *opaque) |
1665 | { | |
1666 | SCSIDevice *s = opaque; | |
1667 | ||
1668 | return s->sense_len > SCSI_SENSE_BUF_SIZE_OLD; | |
1669 | } | |
1670 | ||
1671 | static const VMStateDescription vmstate_scsi_sense_state = { | |
1672 | .name = "SCSIDevice/sense", | |
1673 | .version_id = 1, | |
1674 | .minimum_version_id = 1, | |
5cd8cada | 1675 | .needed = scsi_sense_state_needed, |
d49805ae | 1676 | .fields = (VMStateField[]) { |
2e323f03 FZ |
1677 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, |
1678 | SCSI_SENSE_BUF_SIZE_OLD, | |
1679 | SCSI_SENSE_BUF_SIZE - SCSI_SENSE_BUF_SIZE_OLD), | |
1680 | VMSTATE_END_OF_LIST() | |
1681 | } | |
1682 | }; | |
1683 | ||
63f740dd PB |
1684 | const VMStateDescription vmstate_scsi_device = { |
1685 | .name = "SCSIDevice", | |
1686 | .version_id = 1, | |
1687 | .minimum_version_id = 1, | |
63f740dd PB |
1688 | .fields = (VMStateField[]) { |
1689 | VMSTATE_UINT8(unit_attention.key, SCSIDevice), | |
1690 | VMSTATE_UINT8(unit_attention.asc, SCSIDevice), | |
1691 | VMSTATE_UINT8(unit_attention.ascq, SCSIDevice), | |
1692 | VMSTATE_BOOL(sense_is_ua, SCSIDevice), | |
2e323f03 | 1693 | VMSTATE_UINT8_SUB_ARRAY(sense, SCSIDevice, 0, SCSI_SENSE_BUF_SIZE_OLD), |
63f740dd PB |
1694 | VMSTATE_UINT32(sense_len, SCSIDevice), |
1695 | { | |
1696 | .name = "requests", | |
1697 | .version_id = 0, | |
1698 | .field_exists = NULL, | |
1699 | .size = 0, /* ouch */ | |
1700 | .info = &vmstate_info_scsi_requests, | |
1701 | .flags = VMS_SINGLE, | |
1702 | .offset = 0, | |
1703 | }, | |
1704 | VMSTATE_END_OF_LIST() | |
2e323f03 | 1705 | }, |
5cd8cada JQ |
1706 | .subsections = (const VMStateDescription*[]) { |
1707 | &vmstate_scsi_sense_state, | |
1708 | NULL | |
63f740dd PB |
1709 | } |
1710 | }; | |
1711 | ||
39bffca2 AL |
1712 | static void scsi_device_class_init(ObjectClass *klass, void *data) |
1713 | { | |
1714 | DeviceClass *k = DEVICE_CLASS(klass); | |
125ee0ed | 1715 | set_bit(DEVICE_CATEGORY_STORAGE, k->categories); |
a818a4b6 FZ |
1716 | k->bus_type = TYPE_SCSI_BUS; |
1717 | k->realize = scsi_qdev_realize; | |
a818a4b6 | 1718 | k->unrealize = scsi_qdev_unrealize; |
4f67d30b | 1719 | device_class_set_props(k, scsi_props); |
39bffca2 AL |
1720 | } |
1721 | ||
44fb6337 GA |
1722 | static void scsi_dev_instance_init(Object *obj) |
1723 | { | |
1724 | DeviceState *dev = DEVICE(obj); | |
e1dc6815 | 1725 | SCSIDevice *s = SCSI_DEVICE(dev); |
44fb6337 GA |
1726 | |
1727 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
1728 | "bootindex", NULL, | |
40c2281c | 1729 | &s->qdev); |
44fb6337 GA |
1730 | } |
1731 | ||
8c43a6f0 | 1732 | static const TypeInfo scsi_device_type_info = { |
b9eea3e6 AL |
1733 | .name = TYPE_SCSI_DEVICE, |
1734 | .parent = TYPE_DEVICE, | |
1735 | .instance_size = sizeof(SCSIDevice), | |
1736 | .abstract = true, | |
1737 | .class_size = sizeof(SCSIDeviceClass), | |
39bffca2 | 1738 | .class_init = scsi_device_class_init, |
44fb6337 | 1739 | .instance_init = scsi_dev_instance_init, |
b9eea3e6 AL |
1740 | }; |
1741 | ||
83f7d43a | 1742 | static void scsi_register_types(void) |
b9eea3e6 | 1743 | { |
0d936928 | 1744 | type_register_static(&scsi_bus_info); |
b9eea3e6 AL |
1745 | type_register_static(&scsi_device_type_info); |
1746 | } | |
1747 | ||
83f7d43a | 1748 | type_init(scsi_register_types) |