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Commit | Line | Data |
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973abc7f SH |
1 | /* |
2 | * Virtio SCSI HBA | |
3 | * | |
4 | * Copyright IBM, Corp. 2010 | |
5 | * Copyright Red Hat, Inc. 2011 | |
6 | * | |
7 | * Authors: | |
8 | * Stefan Hajnoczi <[email protected]> | |
9 | * Paolo Bonzini <[email protected]> | |
10 | * | |
11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
12 | * See the COPYING file in the top-level directory. | |
13 | * | |
14 | */ | |
15 | ||
0d09e41a | 16 | #include "hw/virtio/virtio-scsi.h" |
b4a42f81 | 17 | #include "qemu/error-report.h" |
36b15c79 | 18 | #include "qemu/iov.h" |
0d09e41a PB |
19 | #include <hw/scsi/scsi.h> |
20 | #include <block/scsi.h> | |
21 | #include <hw/virtio/virtio-bus.h> | |
8c085dbe | 22 | #include "hw/virtio/virtio-access.h" |
dfb37cf7 | 23 | #include "migration/migration.h" |
973abc7f | 24 | |
2ccdcd8d PB |
25 | static inline int virtio_scsi_get_lun(uint8_t *lun) |
26 | { | |
27 | return ((lun[2] << 8) | lun[3]) & 0x3FFF; | |
28 | } | |
29 | ||
30 | static inline SCSIDevice *virtio_scsi_device_find(VirtIOSCSI *s, uint8_t *lun) | |
31 | { | |
32 | if (lun[0] != 1) { | |
33 | return NULL; | |
34 | } | |
35 | if (lun[2] != 0 && !(lun[2] >= 0x40 && lun[2] < 0x80)) { | |
36 | return NULL; | |
37 | } | |
38 | return scsi_device_find(&s->bus, 0, lun[1], virtio_scsi_get_lun(lun)); | |
39 | } | |
40 | ||
c505333d | 41 | VirtIOSCSIReq *virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq) |
36b15c79 PB |
42 | { |
43 | VirtIOSCSIReq *req; | |
faf1e1fb FZ |
44 | VirtIOSCSICommon *vs = (VirtIOSCSICommon *)s; |
45 | const size_t zero_skip = offsetof(VirtIOSCSIReq, elem) | |
46 | + sizeof(VirtQueueElement); | |
36b15c79 | 47 | |
faf1e1fb | 48 | req = g_slice_alloc(sizeof(*req) + vs->cdb_size); |
36b15c79 PB |
49 | req->vq = vq; |
50 | req->dev = s; | |
36b15c79 | 51 | qemu_sglist_init(&req->qsgl, DEVICE(s), 8, &address_space_memory); |
3eff1f46 | 52 | qemu_iovec_init(&req->resp_iov, 1); |
faf1e1fb | 53 | memset((uint8_t *)req + zero_skip, 0, sizeof(*req) - zero_skip); |
36b15c79 PB |
54 | return req; |
55 | } | |
56 | ||
aa8e8f83 | 57 | void virtio_scsi_free_req(VirtIOSCSIReq *req) |
36b15c79 | 58 | { |
faf1e1fb FZ |
59 | VirtIOSCSICommon *vs = (VirtIOSCSICommon *)req->dev; |
60 | ||
3eff1f46 | 61 | qemu_iovec_destroy(&req->resp_iov); |
36b15c79 | 62 | qemu_sglist_destroy(&req->qsgl); |
faf1e1fb | 63 | g_slice_free1(sizeof(*req) + vs->cdb_size, req); |
36b15c79 PB |
64 | } |
65 | ||
326799c0 SH |
66 | static void virtio_scsi_complete_req(VirtIOSCSIReq *req) |
67 | { | |
68 | VirtIOSCSI *s = req->dev; | |
69 | VirtQueue *vq = req->vq; | |
0ac8e139 | 70 | VirtIODevice *vdev = VIRTIO_DEVICE(s); |
3eff1f46 PB |
71 | |
72 | qemu_iovec_from_buf(&req->resp_iov, 0, &req->resp, req->resp_size); | |
63c7e542 FZ |
73 | if (req->vring) { |
74 | assert(req->vq == NULL); | |
75 | virtio_scsi_vring_push_notify(req); | |
76 | } else { | |
77 | virtqueue_push(vq, &req->elem, req->qsgl.size + req->resp_iov.size); | |
78 | virtio_notify(vdev, vq); | |
79 | } | |
80 | ||
326799c0 SH |
81 | if (req->sreq) { |
82 | req->sreq->hba_private = NULL; | |
83 | scsi_req_unref(req->sreq); | |
84 | } | |
36b15c79 | 85 | virtio_scsi_free_req(req); |
326799c0 SH |
86 | } |
87 | ||
88 | static void virtio_scsi_bad_req(void) | |
89 | { | |
90 | error_report("wrong size for virtio-scsi headers"); | |
91 | exit(1); | |
92 | } | |
93 | ||
57fbae6e PB |
94 | static size_t qemu_sgl_concat(VirtIOSCSIReq *req, struct iovec *iov, |
95 | hwaddr *addr, int num, size_t skip) | |
326799c0 | 96 | { |
f487b677 | 97 | QEMUSGList *qsgl = &req->qsgl; |
57fbae6e PB |
98 | size_t copied = 0; |
99 | ||
100 | while (num) { | |
101 | if (skip >= iov->iov_len) { | |
102 | skip -= iov->iov_len; | |
103 | } else { | |
104 | qemu_sglist_add(qsgl, *addr + skip, iov->iov_len - skip); | |
105 | copied += iov->iov_len - skip; | |
106 | skip = 0; | |
107 | } | |
108 | iov++; | |
109 | addr++; | |
110 | num--; | |
326799c0 | 111 | } |
57fbae6e PB |
112 | |
113 | assert(skip == 0); | |
114 | return copied; | |
326799c0 SH |
115 | } |
116 | ||
36b15c79 PB |
117 | static int virtio_scsi_parse_req(VirtIOSCSIReq *req, |
118 | unsigned req_size, unsigned resp_size) | |
326799c0 | 119 | { |
3eff1f46 | 120 | size_t in_size, out_size; |
36b15c79 | 121 | |
3eff1f46 PB |
122 | if (iov_to_buf(req->elem.out_sg, req->elem.out_num, 0, |
123 | &req->req, req_size) < req_size) { | |
36b15c79 PB |
124 | return -EINVAL; |
125 | } | |
36b15c79 | 126 | |
3eff1f46 PB |
127 | if (qemu_iovec_concat_iov(&req->resp_iov, |
128 | req->elem.in_sg, req->elem.in_num, 0, | |
129 | resp_size) < resp_size) { | |
36b15c79 PB |
130 | return -EINVAL; |
131 | } | |
489c7901 | 132 | req->resp_size = resp_size; |
326799c0 | 133 | |
3eff1f46 PB |
134 | out_size = qemu_sgl_concat(req, req->elem.out_sg, |
135 | &req->elem.out_addr[0], req->elem.out_num, | |
136 | req_size); | |
137 | in_size = qemu_sgl_concat(req, req->elem.in_sg, | |
138 | &req->elem.in_addr[0], req->elem.in_num, | |
139 | resp_size); | |
140 | ||
141 | if (out_size && in_size) { | |
142 | return -ENOTSUP; | |
143 | } | |
144 | ||
145 | if (out_size) { | |
146 | req->mode = SCSI_XFER_TO_DEV; | |
147 | } else if (in_size) { | |
148 | req->mode = SCSI_XFER_FROM_DEV; | |
326799c0 | 149 | } |
36b15c79 PB |
150 | |
151 | return 0; | |
326799c0 SH |
152 | } |
153 | ||
154 | static VirtIOSCSIReq *virtio_scsi_pop_req(VirtIOSCSI *s, VirtQueue *vq) | |
155 | { | |
36b15c79 | 156 | VirtIOSCSIReq *req = virtio_scsi_init_req(s, vq); |
326799c0 | 157 | if (!virtqueue_pop(vq, &req->elem)) { |
36b15c79 | 158 | virtio_scsi_free_req(req); |
326799c0 SH |
159 | return NULL; |
160 | } | |
326799c0 SH |
161 | return req; |
162 | } | |
163 | ||
5db1764c PB |
164 | static void virtio_scsi_save_request(QEMUFile *f, SCSIRequest *sreq) |
165 | { | |
166 | VirtIOSCSIReq *req = sreq->hba_private; | |
292c8e50 | 167 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(req->dev); |
d2ad7dd4 | 168 | uint32_t n = virtio_queue_get_id(req->vq) - 2; |
5db1764c | 169 | |
292c8e50 | 170 | assert(n < vs->conf.num_queues); |
fcf104a7 | 171 | qemu_put_be32s(f, &n); |
5db1764c PB |
172 | qemu_put_buffer(f, (unsigned char *)&req->elem, sizeof(req->elem)); |
173 | } | |
174 | ||
175 | static void *virtio_scsi_load_request(QEMUFile *f, SCSIRequest *sreq) | |
176 | { | |
177 | SCSIBus *bus = sreq->bus; | |
178 | VirtIOSCSI *s = container_of(bus, VirtIOSCSI, bus); | |
292c8e50 | 179 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s); |
5db1764c | 180 | VirtIOSCSIReq *req; |
fcf104a7 | 181 | uint32_t n; |
5db1764c | 182 | |
fcf104a7 | 183 | qemu_get_be32s(f, &n); |
292c8e50 | 184 | assert(n < vs->conf.num_queues); |
36b15c79 | 185 | req = virtio_scsi_init_req(s, vs->cmd_vqs[n]); |
5db1764c | 186 | qemu_get_buffer(f, (unsigned char *)&req->elem, sizeof(req->elem)); |
3c3ce981 MT |
187 | /* TODO: add a way for SCSIBusInfo's load_request to fail, |
188 | * and fail migration instead of asserting here. | |
189 | * When we do, we might be able to re-enable NDEBUG below. | |
190 | */ | |
191 | #ifdef NDEBUG | |
192 | #error building with NDEBUG is not supported | |
193 | #endif | |
194 | assert(req->elem.in_num <= ARRAY_SIZE(req->elem.in_sg)); | |
195 | assert(req->elem.out_num <= ARRAY_SIZE(req->elem.out_sg)); | |
36b15c79 PB |
196 | |
197 | if (virtio_scsi_parse_req(req, sizeof(VirtIOSCSICmdReq) + vs->cdb_size, | |
198 | sizeof(VirtIOSCSICmdResp) + vs->sense_size) < 0) { | |
199 | error_report("invalid SCSI request migration data"); | |
200 | exit(1); | |
201 | } | |
5db1764c PB |
202 | |
203 | scsi_req_ref(sreq); | |
204 | req->sreq = sreq; | |
205 | if (req->sreq->cmd.mode != SCSI_XFER_NONE) { | |
3eff1f46 | 206 | assert(req->sreq->cmd.mode == req->mode); |
5db1764c PB |
207 | } |
208 | return req; | |
209 | } | |
210 | ||
49e7e31a FZ |
211 | typedef struct { |
212 | Notifier notifier; | |
213 | VirtIOSCSIReq *tmf_req; | |
214 | } VirtIOSCSICancelNotifier; | |
215 | ||
216 | static void virtio_scsi_cancel_notify(Notifier *notifier, void *data) | |
217 | { | |
218 | VirtIOSCSICancelNotifier *n = container_of(notifier, | |
219 | VirtIOSCSICancelNotifier, | |
220 | notifier); | |
221 | ||
222 | if (--n->tmf_req->remaining == 0) { | |
223 | virtio_scsi_complete_req(n->tmf_req); | |
224 | } | |
225 | g_slice_free(VirtIOSCSICancelNotifier, n); | |
226 | } | |
227 | ||
228 | /* Return 0 if the request is ready to be completed and return to guest; | |
229 | * -EINPROGRESS if the request is submitted and will be completed later, in the | |
230 | * case of async cancellation. */ | |
231 | static int virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req) | |
326799c0 | 232 | { |
3eff1f46 | 233 | SCSIDevice *d = virtio_scsi_device_find(s, req->req.tmf.lun); |
06114d72 | 234 | SCSIRequest *r, *next; |
0866aca1 | 235 | BusChild *kid; |
06114d72 | 236 | int target; |
49e7e31a | 237 | int ret = 0; |
06114d72 | 238 | |
63c7e542 FZ |
239 | if (s->dataplane_started && bdrv_get_aio_context(d->conf.bs) != s->ctx) { |
240 | aio_context_acquire(s->ctx); | |
241 | bdrv_set_aio_context(d->conf.bs, s->ctx); | |
242 | aio_context_release(s->ctx); | |
243 | } | |
06114d72 | 244 | /* Here VIRTIO_SCSI_S_OK means "FUNCTION COMPLETE". */ |
3eff1f46 | 245 | req->resp.tmf.response = VIRTIO_SCSI_S_OK; |
06114d72 | 246 | |
8c085dbe | 247 | virtio_tswap32s(VIRTIO_DEVICE(s), &req->req.tmf.subtype); |
3eff1f46 | 248 | switch (req->req.tmf.subtype) { |
06114d72 PB |
249 | case VIRTIO_SCSI_T_TMF_ABORT_TASK: |
250 | case VIRTIO_SCSI_T_TMF_QUERY_TASK: | |
251 | if (!d) { | |
252 | goto fail; | |
253 | } | |
3eff1f46 | 254 | if (d->lun != virtio_scsi_get_lun(req->req.tmf.lun)) { |
06114d72 PB |
255 | goto incorrect_lun; |
256 | } | |
257 | QTAILQ_FOREACH_SAFE(r, &d->requests, next, next) { | |
4dd7c82c | 258 | VirtIOSCSIReq *cmd_req = r->hba_private; |
3eff1f46 | 259 | if (cmd_req && cmd_req->req.cmd.tag == req->req.tmf.tag) { |
06114d72 PB |
260 | break; |
261 | } | |
262 | } | |
4dd7c82c PB |
263 | if (r) { |
264 | /* | |
265 | * Assert that the request has not been completed yet, we | |
266 | * check for it in the loop above. | |
267 | */ | |
268 | assert(r->hba_private); | |
3eff1f46 | 269 | if (req->req.tmf.subtype == VIRTIO_SCSI_T_TMF_QUERY_TASK) { |
06114d72 PB |
270 | /* "If the specified command is present in the task set, then |
271 | * return a service response set to FUNCTION SUCCEEDED". | |
272 | */ | |
3eff1f46 | 273 | req->resp.tmf.response = VIRTIO_SCSI_S_FUNCTION_SUCCEEDED; |
06114d72 | 274 | } else { |
49e7e31a FZ |
275 | VirtIOSCSICancelNotifier *notifier; |
276 | ||
277 | req->remaining = 1; | |
278 | notifier = g_slice_new(VirtIOSCSICancelNotifier); | |
279 | notifier->tmf_req = req; | |
280 | notifier->notifier.notify = virtio_scsi_cancel_notify; | |
281 | scsi_req_cancel_async(r, ¬ifier->notifier); | |
282 | ret = -EINPROGRESS; | |
06114d72 PB |
283 | } |
284 | } | |
285 | break; | |
286 | ||
287 | case VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET: | |
288 | if (!d) { | |
289 | goto fail; | |
290 | } | |
3eff1f46 | 291 | if (d->lun != virtio_scsi_get_lun(req->req.tmf.lun)) { |
06114d72 PB |
292 | goto incorrect_lun; |
293 | } | |
294 | s->resetting++; | |
295 | qdev_reset_all(&d->qdev); | |
296 | s->resetting--; | |
297 | break; | |
298 | ||
299 | case VIRTIO_SCSI_T_TMF_ABORT_TASK_SET: | |
300 | case VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET: | |
301 | case VIRTIO_SCSI_T_TMF_QUERY_TASK_SET: | |
302 | if (!d) { | |
303 | goto fail; | |
304 | } | |
3eff1f46 | 305 | if (d->lun != virtio_scsi_get_lun(req->req.tmf.lun)) { |
06114d72 PB |
306 | goto incorrect_lun; |
307 | } | |
49e7e31a FZ |
308 | |
309 | /* Add 1 to "remaining" until virtio_scsi_do_tmf returns. | |
310 | * This way, if the bus starts calling back to the notifiers | |
311 | * even before we finish the loop, virtio_scsi_cancel_notify | |
312 | * will not complete the TMF too early. | |
313 | */ | |
314 | req->remaining = 1; | |
06114d72 PB |
315 | QTAILQ_FOREACH_SAFE(r, &d->requests, next, next) { |
316 | if (r->hba_private) { | |
3eff1f46 | 317 | if (req->req.tmf.subtype == VIRTIO_SCSI_T_TMF_QUERY_TASK_SET) { |
06114d72 PB |
318 | /* "If there is any command present in the task set, then |
319 | * return a service response set to FUNCTION SUCCEEDED". | |
320 | */ | |
3eff1f46 | 321 | req->resp.tmf.response = VIRTIO_SCSI_S_FUNCTION_SUCCEEDED; |
06114d72 PB |
322 | break; |
323 | } else { | |
49e7e31a FZ |
324 | VirtIOSCSICancelNotifier *notifier; |
325 | ||
326 | req->remaining++; | |
327 | notifier = g_slice_new(VirtIOSCSICancelNotifier); | |
328 | notifier->notifier.notify = virtio_scsi_cancel_notify; | |
329 | notifier->tmf_req = req; | |
330 | scsi_req_cancel_async(r, ¬ifier->notifier); | |
06114d72 PB |
331 | } |
332 | } | |
333 | } | |
49e7e31a FZ |
334 | if (--req->remaining > 0) { |
335 | ret = -EINPROGRESS; | |
336 | } | |
06114d72 PB |
337 | break; |
338 | ||
339 | case VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET: | |
3eff1f46 | 340 | target = req->req.tmf.lun[1]; |
06114d72 | 341 | s->resetting++; |
0866aca1 AL |
342 | QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) { |
343 | d = DO_UPCAST(SCSIDevice, qdev, kid->child); | |
06114d72 PB |
344 | if (d->channel == 0 && d->id == target) { |
345 | qdev_reset_all(&d->qdev); | |
346 | } | |
347 | } | |
348 | s->resetting--; | |
349 | break; | |
350 | ||
351 | case VIRTIO_SCSI_T_TMF_CLEAR_ACA: | |
352 | default: | |
3eff1f46 | 353 | req->resp.tmf.response = VIRTIO_SCSI_S_FUNCTION_REJECTED; |
06114d72 | 354 | break; |
326799c0 SH |
355 | } |
356 | ||
49e7e31a | 357 | return ret; |
06114d72 PB |
358 | |
359 | incorrect_lun: | |
3eff1f46 | 360 | req->resp.tmf.response = VIRTIO_SCSI_S_INCORRECT_LUN; |
49e7e31a | 361 | return ret; |
06114d72 PB |
362 | |
363 | fail: | |
3eff1f46 | 364 | req->resp.tmf.response = VIRTIO_SCSI_S_BAD_TARGET; |
49e7e31a | 365 | return ret; |
326799c0 SH |
366 | } |
367 | ||
dc56b7c4 | 368 | void virtio_scsi_handle_ctrl_req(VirtIOSCSI *s, VirtIOSCSIReq *req) |
973abc7f | 369 | { |
dc56b7c4 FZ |
370 | VirtIODevice *vdev = (VirtIODevice *)s; |
371 | int type; | |
49e7e31a | 372 | int r = 0; |
326799c0 | 373 | |
dc56b7c4 FZ |
374 | if (iov_to_buf(req->elem.out_sg, req->elem.out_num, 0, |
375 | &type, sizeof(type)) < sizeof(type)) { | |
376 | virtio_scsi_bad_req(); | |
377 | return; | |
378 | } | |
36b15c79 | 379 | |
dc56b7c4 FZ |
380 | virtio_tswap32s(vdev, &req->req.tmf.type); |
381 | if (req->req.tmf.type == VIRTIO_SCSI_T_TMF) { | |
382 | if (virtio_scsi_parse_req(req, sizeof(VirtIOSCSICtrlTMFReq), | |
383 | sizeof(VirtIOSCSICtrlTMFResp)) < 0) { | |
06114d72 | 384 | virtio_scsi_bad_req(); |
dc56b7c4 | 385 | } else { |
49e7e31a | 386 | r = virtio_scsi_do_tmf(s, req); |
b0b4ea17 | 387 | } |
06114d72 | 388 | |
dc56b7c4 FZ |
389 | } else if (req->req.tmf.type == VIRTIO_SCSI_T_AN_QUERY || |
390 | req->req.tmf.type == VIRTIO_SCSI_T_AN_SUBSCRIBE) { | |
391 | if (virtio_scsi_parse_req(req, sizeof(VirtIOSCSICtrlANReq), | |
392 | sizeof(VirtIOSCSICtrlANResp)) < 0) { | |
393 | virtio_scsi_bad_req(); | |
394 | } else { | |
395 | req->resp.an.event_actual = 0; | |
396 | req->resp.an.response = VIRTIO_SCSI_S_OK; | |
06114d72 | 397 | } |
dc56b7c4 | 398 | } |
49e7e31a FZ |
399 | if (r == 0) { |
400 | virtio_scsi_complete_req(req); | |
401 | } else { | |
402 | assert(r == -EINPROGRESS); | |
403 | } | |
dc56b7c4 FZ |
404 | } |
405 | ||
406 | static void virtio_scsi_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) | |
407 | { | |
408 | VirtIOSCSI *s = (VirtIOSCSI *)vdev; | |
409 | VirtIOSCSIReq *req; | |
410 | ||
dfb37cf7 | 411 | if (s->ctx && !s->dataplane_disabled) { |
63c7e542 FZ |
412 | virtio_scsi_dataplane_start(s); |
413 | return; | |
414 | } | |
dc56b7c4 FZ |
415 | while ((req = virtio_scsi_pop_req(s, vq))) { |
416 | virtio_scsi_handle_ctrl_req(s, req); | |
326799c0 SH |
417 | } |
418 | } | |
419 | ||
a3de269c PB |
420 | static void virtio_scsi_complete_cmd_req(VirtIOSCSIReq *req) |
421 | { | |
3eff1f46 PB |
422 | /* Sense data is not in req->resp and is copied separately |
423 | * in virtio_scsi_command_complete. | |
424 | */ | |
425 | req->resp_size = sizeof(VirtIOSCSICmdResp); | |
a3de269c PB |
426 | virtio_scsi_complete_req(req); |
427 | } | |
428 | ||
2ccdcd8d PB |
429 | static void virtio_scsi_command_complete(SCSIRequest *r, uint32_t status, |
430 | size_t resid) | |
431 | { | |
432 | VirtIOSCSIReq *req = r->hba_private; | |
489c7901 | 433 | uint8_t sense[SCSI_SENSE_BUF_SIZE]; |
474ee55a | 434 | uint32_t sense_len; |
8c085dbe | 435 | VirtIODevice *vdev = VIRTIO_DEVICE(req->dev); |
2ccdcd8d | 436 | |
e9c0f0f5 EF |
437 | if (r->io_canceled) { |
438 | return; | |
439 | } | |
440 | ||
3eff1f46 PB |
441 | req->resp.cmd.response = VIRTIO_SCSI_S_OK; |
442 | req->resp.cmd.status = status; | |
443 | if (req->resp.cmd.status == GOOD) { | |
8c085dbe | 444 | req->resp.cmd.resid = virtio_tswap32(vdev, resid); |
2ccdcd8d | 445 | } else { |
3eff1f46 | 446 | req->resp.cmd.resid = 0; |
489c7901 | 447 | sense_len = scsi_req_get_sense(r, sense, sizeof(sense)); |
3eff1f46 PB |
448 | sense_len = MIN(sense_len, req->resp_iov.size - sizeof(req->resp.cmd)); |
449 | qemu_iovec_from_buf(&req->resp_iov, sizeof(req->resp.cmd), | |
450 | &req->resp, sense_len); | |
8c085dbe | 451 | req->resp.cmd.sense_len = virtio_tswap32(vdev, sense_len); |
2ccdcd8d | 452 | } |
a3de269c | 453 | virtio_scsi_complete_cmd_req(req); |
2ccdcd8d PB |
454 | } |
455 | ||
33cbb2c5 PB |
456 | static int virtio_scsi_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, |
457 | uint8_t *buf, void *hba_private) | |
458 | { | |
459 | VirtIOSCSIReq *req = hba_private; | |
460 | ||
461 | if (cmd->len == 0) { | |
462 | cmd->len = MIN(VIRTIO_SCSI_CDB_SIZE, SCSI_CMD_BUF_SIZE); | |
463 | memcpy(cmd->buf, buf, cmd->len); | |
464 | } | |
465 | ||
466 | /* Extract the direction and mode directly from the request, for | |
467 | * host device passthrough. | |
468 | */ | |
469 | cmd->xfer = req->qsgl.size; | |
9df7bfdd | 470 | cmd->mode = req->mode; |
33cbb2c5 PB |
471 | return 0; |
472 | } | |
473 | ||
2ccdcd8d PB |
474 | static QEMUSGList *virtio_scsi_get_sg_list(SCSIRequest *r) |
475 | { | |
476 | VirtIOSCSIReq *req = r->hba_private; | |
477 | ||
478 | return &req->qsgl; | |
479 | } | |
480 | ||
481 | static void virtio_scsi_request_cancelled(SCSIRequest *r) | |
482 | { | |
483 | VirtIOSCSIReq *req = r->hba_private; | |
484 | ||
485 | if (!req) { | |
486 | return; | |
487 | } | |
06114d72 | 488 | if (req->dev->resetting) { |
3eff1f46 | 489 | req->resp.cmd.response = VIRTIO_SCSI_S_RESET; |
06114d72 | 490 | } else { |
3eff1f46 | 491 | req->resp.cmd.response = VIRTIO_SCSI_S_ABORTED; |
06114d72 | 492 | } |
a3de269c | 493 | virtio_scsi_complete_cmd_req(req); |
2ccdcd8d PB |
494 | } |
495 | ||
496 | static void virtio_scsi_fail_cmd_req(VirtIOSCSIReq *req) | |
326799c0 | 497 | { |
3eff1f46 | 498 | req->resp.cmd.response = VIRTIO_SCSI_S_FAILURE; |
a3de269c | 499 | virtio_scsi_complete_cmd_req(req); |
973abc7f SH |
500 | } |
501 | ||
359eea71 | 502 | bool virtio_scsi_handle_cmd_req_prepare(VirtIOSCSI *s, VirtIOSCSIReq *req) |
bf359a44 FZ |
503 | { |
504 | VirtIOSCSICommon *vs = &s->parent_obj; | |
bf359a44 FZ |
505 | SCSIDevice *d; |
506 | int rc; | |
507 | ||
508 | rc = virtio_scsi_parse_req(req, sizeof(VirtIOSCSICmdReq) + vs->cdb_size, | |
509 | sizeof(VirtIOSCSICmdResp) + vs->sense_size); | |
510 | if (rc < 0) { | |
511 | if (rc == -ENOTSUP) { | |
512 | virtio_scsi_fail_cmd_req(req); | |
513 | } else { | |
514 | virtio_scsi_bad_req(); | |
515 | } | |
359eea71 | 516 | return false; |
bf359a44 FZ |
517 | } |
518 | ||
519 | d = virtio_scsi_device_find(s, req->req.cmd.lun); | |
520 | if (!d) { | |
521 | req->resp.cmd.response = VIRTIO_SCSI_S_BAD_TARGET; | |
522 | virtio_scsi_complete_cmd_req(req); | |
359eea71 | 523 | return false; |
bf359a44 | 524 | } |
63c7e542 FZ |
525 | if (s->dataplane_started && bdrv_get_aio_context(d->conf.bs) != s->ctx) { |
526 | aio_context_acquire(s->ctx); | |
527 | bdrv_set_aio_context(d->conf.bs, s->ctx); | |
528 | aio_context_release(s->ctx); | |
529 | } | |
bf359a44 FZ |
530 | req->sreq = scsi_req_new(d, req->req.cmd.tag, |
531 | virtio_scsi_get_lun(req->req.cmd.lun), | |
532 | req->req.cdb, req); | |
533 | ||
534 | if (req->sreq->cmd.mode != SCSI_XFER_NONE | |
535 | && (req->sreq->cmd.mode != req->mode || | |
536 | req->sreq->cmd.xfer > req->qsgl.size)) { | |
537 | req->resp.cmd.response = VIRTIO_SCSI_S_OVERRUN; | |
538 | virtio_scsi_complete_cmd_req(req); | |
359eea71 | 539 | return false; |
bf359a44 | 540 | } |
5170f40b FZ |
541 | scsi_req_ref(req->sreq); |
542 | bdrv_io_plug(d->conf.bs); | |
359eea71 FZ |
543 | return true; |
544 | } | |
bf359a44 | 545 | |
359eea71 FZ |
546 | void virtio_scsi_handle_cmd_req_submit(VirtIOSCSI *s, VirtIOSCSIReq *req) |
547 | { | |
35e4e96c PB |
548 | SCSIRequest *sreq = req->sreq; |
549 | if (scsi_req_enqueue(sreq)) { | |
550 | scsi_req_continue(sreq); | |
bf359a44 | 551 | } |
35e4e96c PB |
552 | bdrv_io_unplug(sreq->dev->conf.bs); |
553 | scsi_req_unref(sreq); | |
bf359a44 FZ |
554 | } |
555 | ||
973abc7f SH |
556 | static void virtio_scsi_handle_cmd(VirtIODevice *vdev, VirtQueue *vq) |
557 | { | |
292c8e50 | 558 | /* use non-QOM casts in the data path */ |
326799c0 | 559 | VirtIOSCSI *s = (VirtIOSCSI *)vdev; |
1880ad4f FZ |
560 | VirtIOSCSIReq *req, *next; |
561 | QTAILQ_HEAD(, VirtIOSCSIReq) reqs = QTAILQ_HEAD_INITIALIZER(reqs); | |
326799c0 | 562 | |
dfb37cf7 | 563 | if (s->ctx && !s->dataplane_disabled) { |
63c7e542 FZ |
564 | virtio_scsi_dataplane_start(s); |
565 | return; | |
566 | } | |
326799c0 | 567 | while ((req = virtio_scsi_pop_req(s, vq))) { |
359eea71 | 568 | if (virtio_scsi_handle_cmd_req_prepare(s, req)) { |
1880ad4f | 569 | QTAILQ_INSERT_TAIL(&reqs, req, next); |
359eea71 | 570 | } |
326799c0 | 571 | } |
1880ad4f FZ |
572 | |
573 | QTAILQ_FOREACH_SAFE(req, &reqs, next, next) { | |
574 | virtio_scsi_handle_cmd_req_submit(s, req); | |
575 | } | |
973abc7f SH |
576 | } |
577 | ||
578 | static void virtio_scsi_get_config(VirtIODevice *vdev, | |
579 | uint8_t *config) | |
580 | { | |
581 | VirtIOSCSIConfig *scsiconf = (VirtIOSCSIConfig *)config; | |
292c8e50 | 582 | VirtIOSCSICommon *s = VIRTIO_SCSI_COMMON(vdev); |
973abc7f | 583 | |
8c085dbe RR |
584 | virtio_stl_p(vdev, &scsiconf->num_queues, s->conf.num_queues); |
585 | virtio_stl_p(vdev, &scsiconf->seg_max, 128 - 2); | |
586 | virtio_stl_p(vdev, &scsiconf->max_sectors, s->conf.max_sectors); | |
587 | virtio_stl_p(vdev, &scsiconf->cmd_per_lun, s->conf.cmd_per_lun); | |
588 | virtio_stl_p(vdev, &scsiconf->event_info_size, sizeof(VirtIOSCSIEvent)); | |
589 | virtio_stl_p(vdev, &scsiconf->sense_size, s->sense_size); | |
590 | virtio_stl_p(vdev, &scsiconf->cdb_size, s->cdb_size); | |
591 | virtio_stw_p(vdev, &scsiconf->max_channel, VIRTIO_SCSI_MAX_CHANNEL); | |
592 | virtio_stw_p(vdev, &scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET); | |
593 | virtio_stl_p(vdev, &scsiconf->max_lun, VIRTIO_SCSI_MAX_LUN); | |
973abc7f SH |
594 | } |
595 | ||
596 | static void virtio_scsi_set_config(VirtIODevice *vdev, | |
597 | const uint8_t *config) | |
598 | { | |
599 | VirtIOSCSIConfig *scsiconf = (VirtIOSCSIConfig *)config; | |
292c8e50 | 600 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); |
973abc7f | 601 | |
8c085dbe RR |
602 | if ((uint32_t) virtio_ldl_p(vdev, &scsiconf->sense_size) >= 65536 || |
603 | (uint32_t) virtio_ldl_p(vdev, &scsiconf->cdb_size) >= 256) { | |
973abc7f SH |
604 | error_report("bad data written to virtio-scsi configuration space"); |
605 | exit(1); | |
606 | } | |
607 | ||
8c085dbe RR |
608 | vs->sense_size = virtio_ldl_p(vdev, &scsiconf->sense_size); |
609 | vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); | |
973abc7f SH |
610 | } |
611 | ||
612 | static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, | |
613 | uint32_t requested_features) | |
614 | { | |
615 | return requested_features; | |
616 | } | |
617 | ||
618 | static void virtio_scsi_reset(VirtIODevice *vdev) | |
619 | { | |
292c8e50 PB |
620 | VirtIOSCSI *s = VIRTIO_SCSI(vdev); |
621 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); | |
973abc7f | 622 | |
63c7e542 FZ |
623 | if (s->ctx) { |
624 | virtio_scsi_dataplane_stop(s); | |
625 | } | |
47a150a4 PB |
626 | s->resetting++; |
627 | qbus_reset_all(&s->bus.qbus); | |
628 | s->resetting--; | |
629 | ||
292c8e50 PB |
630 | vs->sense_size = VIRTIO_SCSI_SENSE_SIZE; |
631 | vs->cdb_size = VIRTIO_SCSI_CDB_SIZE; | |
2baa1beb | 632 | s->events_dropped = false; |
973abc7f SH |
633 | } |
634 | ||
5db1764c PB |
635 | /* The device does not have anything to save beyond the virtio data. |
636 | * Request data is saved with callbacks from SCSI devices. | |
637 | */ | |
638 | static void virtio_scsi_save(QEMUFile *f, void *opaque) | |
639 | { | |
0ac8e139 FK |
640 | VirtIODevice *vdev = VIRTIO_DEVICE(opaque); |
641 | virtio_save(vdev, f); | |
5db1764c PB |
642 | } |
643 | ||
644 | static int virtio_scsi_load(QEMUFile *f, void *opaque, int version_id) | |
645 | { | |
0ac8e139 | 646 | VirtIODevice *vdev = VIRTIO_DEVICE(opaque); |
2a633c46 OW |
647 | int ret; |
648 | ||
1b5fc0de | 649 | ret = virtio_load(vdev, f, version_id); |
2a633c46 OW |
650 | if (ret) { |
651 | return ret; | |
652 | } | |
5db1764c PB |
653 | return 0; |
654 | } | |
655 | ||
20e6dca1 FZ |
656 | void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev, |
657 | uint32_t event, uint32_t reason) | |
b6866fee | 658 | { |
292c8e50 | 659 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s); |
91e7fcca | 660 | VirtIOSCSIReq *req; |
b6866fee | 661 | VirtIOSCSIEvent *evt; |
0ac8e139 | 662 | VirtIODevice *vdev = VIRTIO_DEVICE(s); |
b6866fee | 663 | |
0ac8e139 | 664 | if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
cd41a671 PB |
665 | return; |
666 | } | |
667 | ||
63c7e542 FZ |
668 | if (s->dataplane_started) { |
669 | assert(s->ctx); | |
670 | aio_context_acquire(s->ctx); | |
671 | } | |
672 | ||
673 | if (s->dataplane_started) { | |
674 | req = virtio_scsi_pop_req_vring(s, s->event_vring); | |
675 | } else { | |
676 | req = virtio_scsi_pop_req(s, vs->event_vq); | |
677 | } | |
64f64855 PB |
678 | if (!req) { |
679 | s->events_dropped = true; | |
63c7e542 | 680 | goto out; |
64f64855 | 681 | } |
b6866fee | 682 | |
64f64855 PB |
683 | if (s->events_dropped) { |
684 | event |= VIRTIO_SCSI_T_EVENTS_MISSED; | |
685 | s->events_dropped = false; | |
686 | } | |
687 | ||
dfecbb95 | 688 | if (virtio_scsi_parse_req(req, 0, sizeof(VirtIOSCSIEvent))) { |
64f64855 PB |
689 | virtio_scsi_bad_req(); |
690 | } | |
691 | ||
3eff1f46 | 692 | evt = &req->resp.event; |
64f64855 | 693 | memset(evt, 0, sizeof(VirtIOSCSIEvent)); |
424baff5 CLG |
694 | evt->event = virtio_tswap32(vdev, event); |
695 | evt->reason = virtio_tswap32(vdev, reason); | |
64f64855 | 696 | if (!dev) { |
49fb65c7 | 697 | assert(event == VIRTIO_SCSI_T_EVENTS_MISSED); |
64f64855 | 698 | } else { |
b6866fee CM |
699 | evt->lun[0] = 1; |
700 | evt->lun[1] = dev->id; | |
701 | ||
702 | /* Linux wants us to keep the same encoding we use for REPORT LUNS. */ | |
703 | if (dev->lun >= 256) { | |
704 | evt->lun[2] = (dev->lun >> 8) | 0x40; | |
705 | } | |
706 | evt->lun[3] = dev->lun & 0xFF; | |
64f64855 PB |
707 | } |
708 | virtio_scsi_complete_req(req); | |
63c7e542 FZ |
709 | out: |
710 | if (s->dataplane_started) { | |
711 | aio_context_release(s->ctx); | |
712 | } | |
64f64855 PB |
713 | } |
714 | ||
715 | static void virtio_scsi_handle_event(VirtIODevice *vdev, VirtQueue *vq) | |
716 | { | |
0ac8e139 | 717 | VirtIOSCSI *s = VIRTIO_SCSI(vdev); |
64f64855 | 718 | |
dfb37cf7 | 719 | if (s->ctx && !s->dataplane_disabled) { |
63c7e542 FZ |
720 | virtio_scsi_dataplane_start(s); |
721 | return; | |
722 | } | |
64f64855 PB |
723 | if (s->events_dropped) { |
724 | virtio_scsi_push_event(s, NULL, VIRTIO_SCSI_T_NO_EVENT, 0); | |
b6866fee CM |
725 | } |
726 | } | |
727 | ||
feda01e4 PB |
728 | static void virtio_scsi_change(SCSIBus *bus, SCSIDevice *dev, SCSISense sense) |
729 | { | |
730 | VirtIOSCSI *s = container_of(bus, VirtIOSCSI, bus); | |
0ac8e139 | 731 | VirtIODevice *vdev = VIRTIO_DEVICE(s); |
feda01e4 | 732 | |
0ac8e139 | 733 | if (((vdev->guest_features >> VIRTIO_SCSI_F_CHANGE) & 1) && |
feda01e4 PB |
734 | dev->type != TYPE_ROM) { |
735 | virtio_scsi_push_event(s, dev, VIRTIO_SCSI_T_PARAM_CHANGE, | |
736 | sense.asc | (sense.ascq << 8)); | |
737 | } | |
738 | } | |
739 | ||
02206e52 IM |
740 | static void virtio_scsi_hotplug(HotplugHandler *hotplug_dev, DeviceState *dev, |
741 | Error **errp) | |
b6866fee | 742 | { |
02206e52 | 743 | VirtIODevice *vdev = VIRTIO_DEVICE(hotplug_dev); |
b6866fee | 744 | |
0ac8e139 | 745 | if ((vdev->guest_features >> VIRTIO_SCSI_F_HOTPLUG) & 1) { |
02206e52 IM |
746 | virtio_scsi_push_event(VIRTIO_SCSI(hotplug_dev), SCSI_DEVICE(dev), |
747 | VIRTIO_SCSI_T_TRANSPORT_RESET, | |
b6866fee CM |
748 | VIRTIO_SCSI_EVT_RESET_RESCAN); |
749 | } | |
750 | } | |
751 | ||
02206e52 IM |
752 | static void virtio_scsi_hotunplug(HotplugHandler *hotplug_dev, DeviceState *dev, |
753 | Error **errp) | |
b6866fee | 754 | { |
02206e52 | 755 | VirtIODevice *vdev = VIRTIO_DEVICE(hotplug_dev); |
b6866fee | 756 | |
0ac8e139 | 757 | if ((vdev->guest_features >> VIRTIO_SCSI_F_HOTPLUG) & 1) { |
02206e52 IM |
758 | virtio_scsi_push_event(VIRTIO_SCSI(hotplug_dev), SCSI_DEVICE(dev), |
759 | VIRTIO_SCSI_T_TRANSPORT_RESET, | |
b6866fee CM |
760 | VIRTIO_SCSI_EVT_RESET_REMOVED); |
761 | } | |
02206e52 | 762 | qdev_simple_device_unplug_cb(hotplug_dev, dev, errp); |
b6866fee CM |
763 | } |
764 | ||
2ccdcd8d PB |
765 | static struct SCSIBusInfo virtio_scsi_scsi_info = { |
766 | .tcq = true, | |
767 | .max_channel = VIRTIO_SCSI_MAX_CHANNEL, | |
768 | .max_target = VIRTIO_SCSI_MAX_TARGET, | |
769 | .max_lun = VIRTIO_SCSI_MAX_LUN, | |
770 | ||
771 | .complete = virtio_scsi_command_complete, | |
772 | .cancel = virtio_scsi_request_cancelled, | |
feda01e4 | 773 | .change = virtio_scsi_change, |
33cbb2c5 | 774 | .parse_cdb = virtio_scsi_parse_cdb, |
2ccdcd8d | 775 | .get_sg_list = virtio_scsi_get_sg_list, |
5db1764c PB |
776 | .save_request = virtio_scsi_save_request, |
777 | .load_request = virtio_scsi_load_request, | |
2ccdcd8d PB |
778 | }; |
779 | ||
91d670fb ML |
780 | void virtio_scsi_common_realize(DeviceState *dev, Error **errp, |
781 | HandleOutput ctrl, HandleOutput evt, | |
782 | HandleOutput cmd) | |
973abc7f | 783 | { |
71a6520b AF |
784 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); |
785 | VirtIOSCSICommon *s = VIRTIO_SCSI_COMMON(dev); | |
d2ad7dd4 | 786 | int i; |
973abc7f | 787 | |
7598f0f3 | 788 | virtio_init(vdev, "virtio-scsi", VIRTIO_ID_SCSI, |
763684be | 789 | sizeof(VirtIOSCSIConfig)); |
3ab1dfdd | 790 | |
c9f65528 FZ |
791 | if (s->conf.num_queues <= 0 || s->conf.num_queues > VIRTIO_PCI_QUEUE_MAX) { |
792 | error_setg(errp, "Invalid number of queues (= %" PRId32 "), " | |
793 | "must be a positive integer less than %d.", | |
794 | s->conf.num_queues, VIRTIO_PCI_QUEUE_MAX); | |
795 | return; | |
796 | } | |
763684be | 797 | s->cmd_vqs = g_malloc0(s->conf.num_queues * sizeof(VirtQueue *)); |
292c8e50 PB |
798 | s->sense_size = VIRTIO_SCSI_SENSE_SIZE; |
799 | s->cdb_size = VIRTIO_SCSI_CDB_SIZE; | |
3ab1dfdd | 800 | |
0ac8e139 | 801 | s->ctrl_vq = virtio_add_queue(vdev, VIRTIO_SCSI_VQ_SIZE, |
91d670fb | 802 | ctrl); |
0ac8e139 | 803 | s->event_vq = virtio_add_queue(vdev, VIRTIO_SCSI_VQ_SIZE, |
91d670fb | 804 | evt); |
394e2e4c | 805 | for (i = 0; i < s->conf.num_queues; i++) { |
0ac8e139 | 806 | s->cmd_vqs[i] = virtio_add_queue(vdev, VIRTIO_SCSI_VQ_SIZE, |
91d670fb | 807 | cmd); |
d2ad7dd4 | 808 | } |
9786b592 FZ |
809 | |
810 | if (s->conf.iothread) { | |
811 | virtio_scsi_set_iothread(VIRTIO_SCSI(s), s->conf.iothread); | |
812 | } | |
292c8e50 PB |
813 | } |
814 | ||
dfb37cf7 FZ |
815 | /* Disable dataplane thread during live migration since it does not |
816 | * update the dirty memory bitmap yet. | |
817 | */ | |
818 | static void virtio_scsi_migration_state_changed(Notifier *notifier, void *data) | |
819 | { | |
820 | VirtIOSCSI *s = container_of(notifier, VirtIOSCSI, | |
821 | migration_state_notifier); | |
822 | MigrationState *mig = data; | |
823 | ||
824 | if (migration_in_setup(mig)) { | |
825 | if (!s->dataplane_started) { | |
826 | return; | |
827 | } | |
828 | virtio_scsi_dataplane_stop(s); | |
829 | s->dataplane_disabled = true; | |
830 | } else if (migration_has_finished(mig) || | |
831 | migration_has_failed(mig)) { | |
832 | if (s->dataplane_started) { | |
833 | return; | |
834 | } | |
835 | bdrv_drain_all(); /* complete in-flight non-dataplane requests */ | |
836 | s->dataplane_disabled = false; | |
837 | } | |
838 | } | |
839 | ||
71a6520b | 840 | static void virtio_scsi_device_realize(DeviceState *dev, Error **errp) |
292c8e50 | 841 | { |
71a6520b | 842 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); |
7598f0f3 | 843 | VirtIOSCSI *s = VIRTIO_SCSI(dev); |
292c8e50 | 844 | static int virtio_scsi_id; |
caad4eb3 | 845 | Error *err = NULL; |
292c8e50 | 846 | |
91d670fb ML |
847 | virtio_scsi_common_realize(dev, &err, virtio_scsi_handle_ctrl, |
848 | virtio_scsi_handle_event, | |
849 | virtio_scsi_handle_cmd); | |
71a6520b AF |
850 | if (err != NULL) { |
851 | error_propagate(errp, err); | |
852 | return; | |
292c8e50 PB |
853 | } |
854 | ||
7598f0f3 | 855 | scsi_bus_new(&s->bus, sizeof(s->bus), dev, |
b1187b51 | 856 | &virtio_scsi_scsi_info, vdev->bus_name); |
02206e52 IM |
857 | /* override default SCSI bus hotplug-handler, with virtio-scsi's one */ |
858 | qbus_set_hotplug_handler(BUS(&s->bus), dev, &error_abort); | |
6f32a6b4 | 859 | |
7598f0f3 | 860 | if (!dev->hotplugged) { |
caad4eb3 AF |
861 | scsi_bus_legacy_handle_cmdline(&s->bus, &err); |
862 | if (err != NULL) { | |
71a6520b AF |
863 | error_propagate(errp, err); |
864 | return; | |
caad4eb3 | 865 | } |
2ccdcd8d PB |
866 | } |
867 | ||
7598f0f3 | 868 | register_savevm(dev, "virtio-scsi", virtio_scsi_id++, 1, |
5db1764c | 869 | virtio_scsi_save, virtio_scsi_load, s); |
dfb37cf7 FZ |
870 | s->migration_state_notifier.notify = virtio_scsi_migration_state_changed; |
871 | add_migration_state_change_notifier(&s->migration_state_notifier); | |
3ab1dfdd FK |
872 | } |
873 | ||
19d339f1 FZ |
874 | static void virtio_scsi_instance_init(Object *obj) |
875 | { | |
876 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(obj); | |
877 | ||
878 | object_property_add_link(obj, "iothread", TYPE_IOTHREAD, | |
879 | (Object **)&vs->conf.iothread, | |
880 | qdev_prop_allow_set_link_before_realize, | |
881 | OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort); | |
882 | } | |
883 | ||
306ec6c3 | 884 | void virtio_scsi_common_unrealize(DeviceState *dev, Error **errp) |
292c8e50 | 885 | { |
306ec6c3 AF |
886 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); |
887 | VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(dev); | |
292c8e50 PB |
888 | |
889 | g_free(vs->cmd_vqs); | |
6a1a8cc7 | 890 | virtio_cleanup(vdev); |
292c8e50 PB |
891 | } |
892 | ||
306ec6c3 | 893 | static void virtio_scsi_device_unrealize(DeviceState *dev, Error **errp) |
3ab1dfdd | 894 | { |
306ec6c3 AF |
895 | VirtIOSCSI *s = VIRTIO_SCSI(dev); |
896 | ||
897 | unregister_savevm(dev, "virtio-scsi", s); | |
dfb37cf7 | 898 | remove_migration_state_change_notifier(&s->migration_state_notifier); |
3ab1dfdd | 899 | |
306ec6c3 | 900 | virtio_scsi_common_unrealize(dev, errp); |
3ab1dfdd FK |
901 | } |
902 | ||
903 | static Property virtio_scsi_properties[] = { | |
292c8e50 | 904 | DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSI, parent_obj.conf), |
3ab1dfdd FK |
905 | DEFINE_PROP_END_OF_LIST(), |
906 | }; | |
907 | ||
292c8e50 PB |
908 | static void virtio_scsi_common_class_init(ObjectClass *klass, void *data) |
909 | { | |
910 | VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); | |
125ee0ed | 911 | DeviceClass *dc = DEVICE_CLASS(klass); |
292c8e50 PB |
912 | |
913 | vdc->get_config = virtio_scsi_get_config; | |
125ee0ed | 914 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
292c8e50 PB |
915 | } |
916 | ||
3ab1dfdd FK |
917 | static void virtio_scsi_class_init(ObjectClass *klass, void *data) |
918 | { | |
919 | DeviceClass *dc = DEVICE_CLASS(klass); | |
920 | VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); | |
02206e52 | 921 | HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); |
71a6520b | 922 | |
3ab1dfdd | 923 | dc->props = virtio_scsi_properties; |
125ee0ed | 924 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
71a6520b | 925 | vdc->realize = virtio_scsi_device_realize; |
306ec6c3 | 926 | vdc->unrealize = virtio_scsi_device_unrealize; |
3ab1dfdd FK |
927 | vdc->set_config = virtio_scsi_set_config; |
928 | vdc->get_features = virtio_scsi_get_features; | |
929 | vdc->reset = virtio_scsi_reset; | |
02206e52 IM |
930 | hc->plug = virtio_scsi_hotplug; |
931 | hc->unplug = virtio_scsi_hotunplug; | |
3ab1dfdd FK |
932 | } |
933 | ||
292c8e50 PB |
934 | static const TypeInfo virtio_scsi_common_info = { |
935 | .name = TYPE_VIRTIO_SCSI_COMMON, | |
936 | .parent = TYPE_VIRTIO_DEVICE, | |
937 | .instance_size = sizeof(VirtIOSCSICommon), | |
a27292b5 | 938 | .abstract = true, |
292c8e50 PB |
939 | .class_init = virtio_scsi_common_class_init, |
940 | }; | |
941 | ||
3ab1dfdd FK |
942 | static const TypeInfo virtio_scsi_info = { |
943 | .name = TYPE_VIRTIO_SCSI, | |
292c8e50 | 944 | .parent = TYPE_VIRTIO_SCSI_COMMON, |
3ab1dfdd | 945 | .instance_size = sizeof(VirtIOSCSI), |
19d339f1 | 946 | .instance_init = virtio_scsi_instance_init, |
3ab1dfdd | 947 | .class_init = virtio_scsi_class_init, |
02206e52 IM |
948 | .interfaces = (InterfaceInfo[]) { |
949 | { TYPE_HOTPLUG_HANDLER }, | |
950 | { } | |
951 | } | |
3ab1dfdd FK |
952 | }; |
953 | ||
954 | static void virtio_register_types(void) | |
955 | { | |
292c8e50 | 956 | type_register_static(&virtio_scsi_common_info); |
3ab1dfdd FK |
957 | type_register_static(&virtio_scsi_info); |
958 | } | |
959 | ||
960 | type_init(virtio_register_types) |