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Commit | Line | Data |
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a404b612 | 1 | /* |
8d76bfe8 | 2 | * qdev property parsing |
a404b612 EH |
3 | * (parts specific for qemu-system-*) |
4 | * | |
5 | * This file is based on code from hw/qdev-properties.c from | |
6 | * commit 074a86fccd185616469dfcdc0e157f438aebba18, | |
7 | * Copyright (c) Gerd Hoffmann <kraxel@redhat.com> and other contributors. | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | */ | |
12 | ||
18c86e2b | 13 | #include "qemu/osdep.h" |
88e47b9a | 14 | #include "audio/audio.h" |
501a7ce7 | 15 | #include "net/net.h" |
a27bd6c7 | 16 | #include "hw/qdev-properties.h" |
da34e65c | 17 | #include "qapi/error.h" |
501a7ce7 | 18 | #include "qapi/qmp/qerror.h" |
4be74634 | 19 | #include "sysemu/block-backend.h" |
501a7ce7 | 20 | #include "sysemu/blockdev.h" |
0d09e41a | 21 | #include "hw/block/block.h" |
a404b612 | 22 | #include "net/hub.h" |
501a7ce7 | 23 | #include "qapi/visitor.h" |
4d43a603 | 24 | #include "chardev/char-fe.h" |
6e4a876b | 25 | #include "sysemu/iothread.h" |
493b7830 | 26 | #include "sysemu/tpm_backend.h" |
a404b612 EH |
27 | |
28 | static void get_pointer(Object *obj, Visitor *v, Property *prop, | |
7d1de464 | 29 | char *(*print)(void *ptr), |
a404b612 EH |
30 | const char *name, Error **errp) |
31 | { | |
32 | DeviceState *dev = DEVICE(obj); | |
33 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
34 | char *p; | |
35 | ||
7d1de464 | 36 | p = *ptr ? print(*ptr) : g_strdup(""); |
51e72bc1 | 37 | visit_type_str(v, name, &p, errp); |
7d1de464 | 38 | g_free(p); |
a404b612 EH |
39 | } |
40 | ||
41 | static void set_pointer(Object *obj, Visitor *v, Property *prop, | |
f1fb9f0d PM |
42 | void (*parse)(DeviceState *dev, const char *str, |
43 | void **ptr, const char *propname, | |
44 | Error **errp), | |
a404b612 EH |
45 | const char *name, Error **errp) |
46 | { | |
47 | DeviceState *dev = DEVICE(obj); | |
48 | Error *local_err = NULL; | |
49 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
50 | char *str; | |
a404b612 | 51 | |
7983c8a3 | 52 | if (dev->realized) { |
b000dfbd | 53 | qdev_prop_set_after_realize(dev, name, errp); |
a404b612 EH |
54 | return; |
55 | } | |
56 | ||
51e72bc1 | 57 | visit_type_str(v, name, &str, &local_err); |
a404b612 EH |
58 | if (local_err) { |
59 | error_propagate(errp, local_err); | |
60 | return; | |
61 | } | |
62 | if (!*str) { | |
63 | g_free(str); | |
64 | *ptr = NULL; | |
65 | return; | |
66 | } | |
f1fb9f0d | 67 | parse(dev, str, ptr, prop->name, errp); |
a404b612 EH |
68 | g_free(str); |
69 | } | |
70 | ||
71 | /* --- drive --- */ | |
72 | ||
307a5f60 KW |
73 | static void do_parse_drive(DeviceState *dev, const char *str, void **ptr, |
74 | const char *propname, bool iothread, Error **errp) | |
a404b612 | 75 | { |
4be74634 | 76 | BlockBackend *blk; |
8daea510 | 77 | bool blk_created = false; |
d7086422 | 78 | int ret; |
a404b612 | 79 | |
4be74634 | 80 | blk = blk_by_name(str); |
8daea510 KW |
81 | if (!blk) { |
82 | BlockDriverState *bs = bdrv_lookup_bs(NULL, str, NULL); | |
83 | if (bs) { | |
307a5f60 KW |
84 | /* |
85 | * If the device supports iothreads, it will make sure to move the | |
86 | * block node to the right AioContext if necessary (or fail if this | |
87 | * isn't possible because of other users). Devices that are not | |
88 | * aware of iothreads require their BlockBackends to be in the main | |
89 | * AioContext. | |
90 | */ | |
91 | AioContext *ctx = iothread ? bdrv_get_aio_context(bs) : | |
92 | qemu_get_aio_context(); | |
93 | blk = blk_new(ctx, 0, BLK_PERM_ALL); | |
8daea510 | 94 | blk_created = true; |
d7086422 KW |
95 | |
96 | ret = blk_insert_bs(blk, bs, errp); | |
97 | if (ret < 0) { | |
98 | goto fail; | |
99 | } | |
8daea510 KW |
100 | } |
101 | } | |
4be74634 | 102 | if (!blk) { |
f1fb9f0d PM |
103 | error_setg(errp, "Property '%s.%s' can't find value '%s'", |
104 | object_get_typename(OBJECT(dev)), propname, str); | |
8daea510 | 105 | goto fail; |
a404b612 | 106 | } |
4be74634 | 107 | if (blk_attach_dev(blk, dev) < 0) { |
62f7dbde PM |
108 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
109 | ||
a9d52a75 | 110 | if (dinfo && dinfo->type != IF_NONE) { |
62f7dbde PM |
111 | error_setg(errp, "Drive '%s' is already in use because " |
112 | "it has been automatically connected to another " | |
113 | "device (did you need 'if=none' in the drive options?)", | |
114 | str); | |
115 | } else { | |
116 | error_setg(errp, "Drive '%s' is already in use by another device", | |
117 | str); | |
118 | } | |
8daea510 | 119 | goto fail; |
a404b612 | 120 | } |
8daea510 | 121 | |
4be74634 | 122 | *ptr = blk; |
8daea510 KW |
123 | |
124 | fail: | |
125 | if (blk_created) { | |
126 | /* If we need to keep a reference, blk_attach_dev() took it */ | |
127 | blk_unref(blk); | |
128 | } | |
a404b612 EH |
129 | } |
130 | ||
307a5f60 KW |
131 | static void parse_drive(DeviceState *dev, const char *str, void **ptr, |
132 | const char *propname, Error **errp) | |
133 | { | |
134 | do_parse_drive(dev, str, ptr, propname, false, errp); | |
135 | } | |
136 | ||
137 | static void parse_drive_iothread(DeviceState *dev, const char *str, void **ptr, | |
138 | const char *propname, Error **errp) | |
139 | { | |
140 | do_parse_drive(dev, str, ptr, propname, true, errp); | |
141 | } | |
142 | ||
a404b612 EH |
143 | static void release_drive(Object *obj, const char *name, void *opaque) |
144 | { | |
145 | DeviceState *dev = DEVICE(obj); | |
146 | Property *prop = opaque; | |
4be74634 | 147 | BlockBackend **ptr = qdev_get_prop_ptr(dev, prop); |
a404b612 EH |
148 | |
149 | if (*ptr) { | |
9588c589 DL |
150 | AioContext *ctx = blk_get_aio_context(*ptr); |
151 | ||
152 | aio_context_acquire(ctx); | |
a404b612 | 153 | blockdev_auto_del(*ptr); |
8daea510 | 154 | blk_detach_dev(*ptr, dev); |
9588c589 | 155 | aio_context_release(ctx); |
a404b612 EH |
156 | } |
157 | } | |
158 | ||
7d1de464 | 159 | static char *print_drive(void *ptr) |
a404b612 | 160 | { |
bd7c4176 KW |
161 | const char *name; |
162 | ||
163 | name = blk_name(ptr); | |
164 | if (!*name) { | |
165 | BlockDriverState *bs = blk_bs(ptr); | |
166 | if (bs) { | |
167 | name = bdrv_get_node_name(bs); | |
168 | } | |
169 | } | |
170 | return g_strdup(name); | |
a404b612 EH |
171 | } |
172 | ||
d7bce999 EB |
173 | static void get_drive(Object *obj, Visitor *v, const char *name, void *opaque, |
174 | Error **errp) | |
a404b612 EH |
175 | { |
176 | get_pointer(obj, v, opaque, print_drive, name, errp); | |
177 | } | |
178 | ||
d7bce999 EB |
179 | static void set_drive(Object *obj, Visitor *v, const char *name, void *opaque, |
180 | Error **errp) | |
a404b612 EH |
181 | { |
182 | set_pointer(obj, v, opaque, parse_drive, name, errp); | |
183 | } | |
184 | ||
307a5f60 KW |
185 | static void set_drive_iothread(Object *obj, Visitor *v, const char *name, |
186 | void *opaque, Error **errp) | |
187 | { | |
188 | set_pointer(obj, v, opaque, parse_drive_iothread, name, errp); | |
189 | } | |
190 | ||
1b6b7d10 | 191 | const PropertyInfo qdev_prop_drive = { |
85ca1202 | 192 | .name = "str", |
8daea510 | 193 | .description = "Node name or ID of a block device to use as a backend", |
a404b612 EH |
194 | .get = get_drive, |
195 | .set = set_drive, | |
196 | .release = release_drive, | |
197 | }; | |
198 | ||
307a5f60 KW |
199 | const PropertyInfo qdev_prop_drive_iothread = { |
200 | .name = "str", | |
201 | .description = "Node name or ID of a block device to use as a backend", | |
202 | .get = get_drive, | |
203 | .set = set_drive_iothread, | |
204 | .release = release_drive, | |
205 | }; | |
206 | ||
a404b612 EH |
207 | /* --- character device --- */ |
208 | ||
becdfa00 MAL |
209 | static void get_chr(Object *obj, Visitor *v, const char *name, void *opaque, |
210 | Error **errp) | |
a404b612 | 211 | { |
becdfa00 MAL |
212 | DeviceState *dev = DEVICE(obj); |
213 | CharBackend *be = qdev_get_prop_ptr(dev, opaque); | |
214 | char *p; | |
215 | ||
216 | p = g_strdup(be->chr && be->chr->label ? be->chr->label : ""); | |
217 | visit_type_str(v, name, &p, errp); | |
218 | g_free(p); | |
a404b612 EH |
219 | } |
220 | ||
becdfa00 MAL |
221 | static void set_chr(Object *obj, Visitor *v, const char *name, void *opaque, |
222 | Error **errp) | |
a404b612 EH |
223 | { |
224 | DeviceState *dev = DEVICE(obj); | |
becdfa00 | 225 | Error *local_err = NULL; |
a404b612 | 226 | Property *prop = opaque; |
becdfa00 | 227 | CharBackend *be = qdev_get_prop_ptr(dev, prop); |
0ec7b3e7 | 228 | Chardev *s; |
becdfa00 | 229 | char *str; |
a404b612 | 230 | |
becdfa00 MAL |
231 | if (dev->realized) { |
232 | qdev_prop_set_after_realize(dev, name, errp); | |
233 | return; | |
a404b612 | 234 | } |
a404b612 | 235 | |
becdfa00 MAL |
236 | visit_type_str(v, name, &str, &local_err); |
237 | if (local_err) { | |
238 | error_propagate(errp, local_err); | |
239 | return; | |
240 | } | |
a404b612 | 241 | |
becdfa00 MAL |
242 | if (!*str) { |
243 | g_free(str); | |
244 | be->chr = NULL; | |
245 | return; | |
246 | } | |
a404b612 | 247 | |
becdfa00 | 248 | s = qemu_chr_find(str); |
becdfa00 MAL |
249 | if (s == NULL) { |
250 | error_setg(errp, "Property '%s.%s' can't find value '%s'", | |
251 | object_get_typename(obj), prop->name, str); | |
2209401f | 252 | } else if (!qemu_chr_fe_init(be, s, errp)) { |
c39860e6 MAL |
253 | error_prepend(errp, "Property '%s.%s' can't take value '%s': ", |
254 | object_get_typename(obj), prop->name, str); | |
becdfa00 | 255 | } |
2209401f | 256 | g_free(str); |
a404b612 EH |
257 | } |
258 | ||
becdfa00 | 259 | static void release_chr(Object *obj, const char *name, void *opaque) |
a404b612 | 260 | { |
becdfa00 MAL |
261 | DeviceState *dev = DEVICE(obj); |
262 | Property *prop = opaque; | |
263 | CharBackend *be = qdev_get_prop_ptr(dev, prop); | |
264 | ||
1ce2610c | 265 | qemu_chr_fe_deinit(be, false); |
a404b612 EH |
266 | } |
267 | ||
1b6b7d10 | 268 | const PropertyInfo qdev_prop_chr = { |
85ca1202 | 269 | .name = "str", |
51b2e8c3 | 270 | .description = "ID of a chardev to use as a backend", |
a404b612 EH |
271 | .get = get_chr, |
272 | .set = set_chr, | |
273 | .release = release_chr, | |
274 | }; | |
275 | ||
276 | /* --- netdev device --- */ | |
d7bce999 EB |
277 | static void get_netdev(Object *obj, Visitor *v, const char *name, |
278 | void *opaque, Error **errp) | |
23120b13 JW |
279 | { |
280 | DeviceState *dev = DEVICE(obj); | |
281 | Property *prop = opaque; | |
282 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); | |
283 | char *p = g_strdup(peers_ptr->ncs[0] ? peers_ptr->ncs[0]->name : ""); | |
284 | ||
51e72bc1 | 285 | visit_type_str(v, name, &p, errp); |
23120b13 JW |
286 | g_free(p); |
287 | } | |
a404b612 | 288 | |
d7bce999 EB |
289 | static void set_netdev(Object *obj, Visitor *v, const char *name, |
290 | void *opaque, Error **errp) | |
a404b612 | 291 | { |
23120b13 JW |
292 | DeviceState *dev = DEVICE(obj); |
293 | Property *prop = opaque; | |
294 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); | |
1ceef9f2 JW |
295 | NetClientState **ncs = peers_ptr->ncs; |
296 | NetClientState *peers[MAX_QUEUE_NUM]; | |
23120b13 JW |
297 | Error *local_err = NULL; |
298 | int queues, err = 0, i = 0; | |
299 | char *str; | |
300 | ||
301 | if (dev->realized) { | |
302 | qdev_prop_set_after_realize(dev, name, errp); | |
303 | return; | |
304 | } | |
305 | ||
51e72bc1 | 306 | visit_type_str(v, name, &str, &local_err); |
23120b13 JW |
307 | if (local_err) { |
308 | error_propagate(errp, local_err); | |
309 | return; | |
310 | } | |
a404b612 | 311 | |
1ceef9f2 | 312 | queues = qemu_find_net_clients_except(str, peers, |
f394b2e2 | 313 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
314 | MAX_QUEUE_NUM); |
315 | if (queues == 0) { | |
23120b13 JW |
316 | err = -ENOENT; |
317 | goto out; | |
a404b612 | 318 | } |
1ceef9f2 JW |
319 | |
320 | if (queues > MAX_QUEUE_NUM) { | |
23120b13 JW |
321 | error_setg(errp, "queues of backend '%s'(%d) exceeds QEMU limitation(%d)", |
322 | str, queues, MAX_QUEUE_NUM); | |
323 | goto out; | |
1ceef9f2 JW |
324 | } |
325 | ||
326 | for (i = 0; i < queues; i++) { | |
1ceef9f2 JW |
327 | |
328 | if (peers[i]->peer) { | |
23120b13 JW |
329 | err = -EEXIST; |
330 | goto out; | |
1ceef9f2 JW |
331 | } |
332 | ||
30c367ed | 333 | if (ncs[i]) { |
23120b13 JW |
334 | err = -EINVAL; |
335 | goto out; | |
30c367ed VY |
336 | } |
337 | ||
1ceef9f2 JW |
338 | ncs[i] = peers[i]; |
339 | ncs[i]->queue_index = i; | |
a404b612 | 340 | } |
1ceef9f2 | 341 | |
575a1c0e | 342 | peers_ptr->queues = queues; |
1ceef9f2 | 343 | |
23120b13 JW |
344 | out: |
345 | error_set_from_qdev_prop_error(errp, err, dev, prop, str); | |
346 | g_free(str); | |
a404b612 EH |
347 | } |
348 | ||
1b6b7d10 | 349 | const PropertyInfo qdev_prop_netdev = { |
85ca1202 | 350 | .name = "str", |
51b2e8c3 | 351 | .description = "ID of a netdev to use as a backend", |
a404b612 EH |
352 | .get = get_netdev, |
353 | .set = set_netdev, | |
354 | }; | |
355 | ||
a404b612 | 356 | |
88e47b9a KZ |
357 | /* --- audiodev --- */ |
358 | static void get_audiodev(Object *obj, Visitor *v, const char* name, | |
359 | void *opaque, Error **errp) | |
360 | { | |
361 | DeviceState *dev = DEVICE(obj); | |
362 | Property *prop = opaque; | |
363 | QEMUSoundCard *card = qdev_get_prop_ptr(dev, prop); | |
364 | char *p = g_strdup(audio_get_id(card)); | |
365 | ||
366 | visit_type_str(v, name, &p, errp); | |
367 | g_free(p); | |
368 | } | |
369 | ||
370 | static void set_audiodev(Object *obj, Visitor *v, const char* name, | |
371 | void *opaque, Error **errp) | |
372 | { | |
373 | DeviceState *dev = DEVICE(obj); | |
374 | Property *prop = opaque; | |
375 | QEMUSoundCard *card = qdev_get_prop_ptr(dev, prop); | |
376 | AudioState *state; | |
377 | Error *local_err = NULL; | |
378 | int err = 0; | |
379 | char *str; | |
380 | ||
381 | if (dev->realized) { | |
382 | qdev_prop_set_after_realize(dev, name, errp); | |
383 | return; | |
384 | } | |
385 | ||
386 | visit_type_str(v, name, &str, &local_err); | |
387 | if (local_err) { | |
388 | error_propagate(errp, local_err); | |
389 | return; | |
390 | } | |
391 | ||
392 | state = audio_state_by_name(str); | |
393 | ||
394 | if (!state) { | |
395 | err = -ENOENT; | |
396 | goto out; | |
397 | } | |
398 | card->state = state; | |
399 | ||
400 | out: | |
401 | error_set_from_qdev_prop_error(errp, err, dev, prop, str); | |
402 | g_free(str); | |
403 | } | |
404 | ||
405 | const PropertyInfo qdev_prop_audiodev = { | |
406 | .name = "str", | |
407 | .description = "ID of an audiodev to use as a backend", | |
408 | /* release done on shutdown */ | |
409 | .get = get_audiodev, | |
410 | .set = set_audiodev, | |
411 | }; | |
412 | ||
9b3d111a MA |
413 | void qdev_prop_set_drive(DeviceState *dev, const char *name, |
414 | BlockBackend *value, Error **errp) | |
a404b612 | 415 | { |
8daea510 KW |
416 | const char *ref = ""; |
417 | ||
418 | if (value) { | |
419 | ref = blk_name(value); | |
420 | if (!*ref) { | |
be9721f4 | 421 | const BlockDriverState *bs = blk_bs(value); |
8daea510 KW |
422 | if (bs) { |
423 | ref = bdrv_get_node_name(bs); | |
424 | } | |
425 | } | |
426 | } | |
427 | ||
428 | object_property_set_str(OBJECT(dev), ref, name, errp); | |
a404b612 EH |
429 | } |
430 | ||
a404b612 | 431 | void qdev_prop_set_chr(DeviceState *dev, const char *name, |
0ec7b3e7 | 432 | Chardev *value) |
a404b612 | 433 | { |
a404b612 EH |
434 | assert(!value || value->label); |
435 | object_property_set_str(OBJECT(dev), | |
5433a0a8 | 436 | value ? value->label : "", name, &error_abort); |
a404b612 EH |
437 | } |
438 | ||
439 | void qdev_prop_set_netdev(DeviceState *dev, const char *name, | |
440 | NetClientState *value) | |
441 | { | |
a404b612 EH |
442 | assert(!value || value->name); |
443 | object_property_set_str(OBJECT(dev), | |
5433a0a8 | 444 | value ? value->name : "", name, &error_abort); |
a404b612 EH |
445 | } |
446 | ||
447 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) | |
448 | { | |
449 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); | |
450 | if (nd->netdev) { | |
451 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
452 | } | |
453 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && | |
454 | object_property_find(OBJECT(dev), "vectors", NULL)) { | |
455 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
456 | } | |
457 | nd->instantiated = 1; | |
458 | } |