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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" |
501a7ce7 | 14 | #include "net/net.h" |
83c9f4ca | 15 | #include "hw/qdev.h" |
da34e65c | 16 | #include "qapi/error.h" |
501a7ce7 | 17 | #include "qapi/qmp/qerror.h" |
4be74634 | 18 | #include "sysemu/block-backend.h" |
501a7ce7 | 19 | #include "sysemu/blockdev.h" |
0d09e41a | 20 | #include "hw/block/block.h" |
a404b612 | 21 | #include "net/hub.h" |
501a7ce7 | 22 | #include "qapi/visitor.h" |
4d43a603 | 23 | #include "chardev/char-fe.h" |
6e4a876b | 24 | #include "sysemu/iothread.h" |
493b7830 | 25 | #include "sysemu/tpm_backend.h" |
a404b612 EH |
26 | |
27 | static void get_pointer(Object *obj, Visitor *v, Property *prop, | |
7d1de464 | 28 | char *(*print)(void *ptr), |
a404b612 EH |
29 | const char *name, Error **errp) |
30 | { | |
31 | DeviceState *dev = DEVICE(obj); | |
32 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
33 | char *p; | |
34 | ||
7d1de464 | 35 | p = *ptr ? print(*ptr) : g_strdup(""); |
51e72bc1 | 36 | visit_type_str(v, name, &p, errp); |
7d1de464 | 37 | g_free(p); |
a404b612 EH |
38 | } |
39 | ||
40 | static void set_pointer(Object *obj, Visitor *v, Property *prop, | |
f1fb9f0d PM |
41 | void (*parse)(DeviceState *dev, const char *str, |
42 | void **ptr, const char *propname, | |
43 | Error **errp), | |
a404b612 EH |
44 | const char *name, Error **errp) |
45 | { | |
46 | DeviceState *dev = DEVICE(obj); | |
47 | Error *local_err = NULL; | |
48 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
49 | char *str; | |
a404b612 | 50 | |
7983c8a3 | 51 | if (dev->realized) { |
b000dfbd | 52 | qdev_prop_set_after_realize(dev, name, errp); |
a404b612 EH |
53 | return; |
54 | } | |
55 | ||
51e72bc1 | 56 | visit_type_str(v, name, &str, &local_err); |
a404b612 EH |
57 | if (local_err) { |
58 | error_propagate(errp, local_err); | |
59 | return; | |
60 | } | |
61 | if (!*str) { | |
62 | g_free(str); | |
63 | *ptr = NULL; | |
64 | return; | |
65 | } | |
f1fb9f0d | 66 | parse(dev, str, ptr, prop->name, errp); |
a404b612 EH |
67 | g_free(str); |
68 | } | |
69 | ||
70 | /* --- drive --- */ | |
71 | ||
307a5f60 KW |
72 | static void do_parse_drive(DeviceState *dev, const char *str, void **ptr, |
73 | const char *propname, bool iothread, Error **errp) | |
a404b612 | 74 | { |
4be74634 | 75 | BlockBackend *blk; |
8daea510 | 76 | bool blk_created = false; |
d7086422 | 77 | int ret; |
a404b612 | 78 | |
4be74634 | 79 | blk = blk_by_name(str); |
8daea510 KW |
80 | if (!blk) { |
81 | BlockDriverState *bs = bdrv_lookup_bs(NULL, str, NULL); | |
82 | if (bs) { | |
307a5f60 KW |
83 | /* |
84 | * If the device supports iothreads, it will make sure to move the | |
85 | * block node to the right AioContext if necessary (or fail if this | |
86 | * isn't possible because of other users). Devices that are not | |
87 | * aware of iothreads require their BlockBackends to be in the main | |
88 | * AioContext. | |
89 | */ | |
90 | AioContext *ctx = iothread ? bdrv_get_aio_context(bs) : | |
91 | qemu_get_aio_context(); | |
92 | blk = blk_new(ctx, 0, BLK_PERM_ALL); | |
8daea510 | 93 | blk_created = true; |
d7086422 KW |
94 | |
95 | ret = blk_insert_bs(blk, bs, errp); | |
96 | if (ret < 0) { | |
97 | goto fail; | |
98 | } | |
8daea510 KW |
99 | } |
100 | } | |
4be74634 | 101 | if (!blk) { |
f1fb9f0d PM |
102 | error_setg(errp, "Property '%s.%s' can't find value '%s'", |
103 | object_get_typename(OBJECT(dev)), propname, str); | |
8daea510 | 104 | goto fail; |
a404b612 | 105 | } |
4be74634 | 106 | if (blk_attach_dev(blk, dev) < 0) { |
62f7dbde PM |
107 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
108 | ||
a9d52a75 | 109 | if (dinfo && dinfo->type != IF_NONE) { |
62f7dbde PM |
110 | error_setg(errp, "Drive '%s' is already in use because " |
111 | "it has been automatically connected to another " | |
112 | "device (did you need 'if=none' in the drive options?)", | |
113 | str); | |
114 | } else { | |
115 | error_setg(errp, "Drive '%s' is already in use by another device", | |
116 | str); | |
117 | } | |
8daea510 | 118 | goto fail; |
a404b612 | 119 | } |
8daea510 | 120 | |
4be74634 | 121 | *ptr = blk; |
8daea510 KW |
122 | |
123 | fail: | |
124 | if (blk_created) { | |
125 | /* If we need to keep a reference, blk_attach_dev() took it */ | |
126 | blk_unref(blk); | |
127 | } | |
a404b612 EH |
128 | } |
129 | ||
307a5f60 KW |
130 | static void parse_drive(DeviceState *dev, const char *str, void **ptr, |
131 | const char *propname, Error **errp) | |
132 | { | |
133 | do_parse_drive(dev, str, ptr, propname, false, errp); | |
134 | } | |
135 | ||
136 | static void parse_drive_iothread(DeviceState *dev, const char *str, void **ptr, | |
137 | const char *propname, Error **errp) | |
138 | { | |
139 | do_parse_drive(dev, str, ptr, propname, true, errp); | |
140 | } | |
141 | ||
a404b612 EH |
142 | static void release_drive(Object *obj, const char *name, void *opaque) |
143 | { | |
144 | DeviceState *dev = DEVICE(obj); | |
145 | Property *prop = opaque; | |
4be74634 | 146 | BlockBackend **ptr = qdev_get_prop_ptr(dev, prop); |
a404b612 EH |
147 | |
148 | if (*ptr) { | |
9588c589 DL |
149 | AioContext *ctx = blk_get_aio_context(*ptr); |
150 | ||
151 | aio_context_acquire(ctx); | |
a404b612 | 152 | blockdev_auto_del(*ptr); |
8daea510 | 153 | blk_detach_dev(*ptr, dev); |
9588c589 | 154 | aio_context_release(ctx); |
a404b612 EH |
155 | } |
156 | } | |
157 | ||
7d1de464 | 158 | static char *print_drive(void *ptr) |
a404b612 | 159 | { |
bd7c4176 KW |
160 | const char *name; |
161 | ||
162 | name = blk_name(ptr); | |
163 | if (!*name) { | |
164 | BlockDriverState *bs = blk_bs(ptr); | |
165 | if (bs) { | |
166 | name = bdrv_get_node_name(bs); | |
167 | } | |
168 | } | |
169 | return g_strdup(name); | |
a404b612 EH |
170 | } |
171 | ||
d7bce999 EB |
172 | static void get_drive(Object *obj, Visitor *v, const char *name, void *opaque, |
173 | Error **errp) | |
a404b612 EH |
174 | { |
175 | get_pointer(obj, v, opaque, print_drive, name, errp); | |
176 | } | |
177 | ||
d7bce999 EB |
178 | static void set_drive(Object *obj, Visitor *v, const char *name, void *opaque, |
179 | Error **errp) | |
a404b612 EH |
180 | { |
181 | set_pointer(obj, v, opaque, parse_drive, name, errp); | |
182 | } | |
183 | ||
307a5f60 KW |
184 | static void set_drive_iothread(Object *obj, Visitor *v, const char *name, |
185 | void *opaque, Error **errp) | |
186 | { | |
187 | set_pointer(obj, v, opaque, parse_drive_iothread, name, errp); | |
188 | } | |
189 | ||
1b6b7d10 | 190 | const PropertyInfo qdev_prop_drive = { |
85ca1202 | 191 | .name = "str", |
8daea510 | 192 | .description = "Node name or ID of a block device to use as a backend", |
a404b612 EH |
193 | .get = get_drive, |
194 | .set = set_drive, | |
195 | .release = release_drive, | |
196 | }; | |
197 | ||
307a5f60 KW |
198 | const PropertyInfo qdev_prop_drive_iothread = { |
199 | .name = "str", | |
200 | .description = "Node name or ID of a block device to use as a backend", | |
201 | .get = get_drive, | |
202 | .set = set_drive_iothread, | |
203 | .release = release_drive, | |
204 | }; | |
205 | ||
a404b612 EH |
206 | /* --- character device --- */ |
207 | ||
becdfa00 MAL |
208 | static void get_chr(Object *obj, Visitor *v, const char *name, void *opaque, |
209 | Error **errp) | |
a404b612 | 210 | { |
becdfa00 MAL |
211 | DeviceState *dev = DEVICE(obj); |
212 | CharBackend *be = qdev_get_prop_ptr(dev, opaque); | |
213 | char *p; | |
214 | ||
215 | p = g_strdup(be->chr && be->chr->label ? be->chr->label : ""); | |
216 | visit_type_str(v, name, &p, errp); | |
217 | g_free(p); | |
a404b612 EH |
218 | } |
219 | ||
becdfa00 MAL |
220 | static void set_chr(Object *obj, Visitor *v, const char *name, void *opaque, |
221 | Error **errp) | |
a404b612 EH |
222 | { |
223 | DeviceState *dev = DEVICE(obj); | |
becdfa00 | 224 | Error *local_err = NULL; |
a404b612 | 225 | Property *prop = opaque; |
becdfa00 | 226 | CharBackend *be = qdev_get_prop_ptr(dev, prop); |
0ec7b3e7 | 227 | Chardev *s; |
becdfa00 | 228 | char *str; |
a404b612 | 229 | |
becdfa00 MAL |
230 | if (dev->realized) { |
231 | qdev_prop_set_after_realize(dev, name, errp); | |
232 | return; | |
a404b612 | 233 | } |
a404b612 | 234 | |
becdfa00 MAL |
235 | visit_type_str(v, name, &str, &local_err); |
236 | if (local_err) { | |
237 | error_propagate(errp, local_err); | |
238 | return; | |
239 | } | |
a404b612 | 240 | |
becdfa00 MAL |
241 | if (!*str) { |
242 | g_free(str); | |
243 | be->chr = NULL; | |
244 | return; | |
245 | } | |
a404b612 | 246 | |
becdfa00 | 247 | s = qemu_chr_find(str); |
becdfa00 MAL |
248 | if (s == NULL) { |
249 | error_setg(errp, "Property '%s.%s' can't find value '%s'", | |
250 | object_get_typename(obj), prop->name, str); | |
2209401f | 251 | } else if (!qemu_chr_fe_init(be, s, errp)) { |
c39860e6 MAL |
252 | error_prepend(errp, "Property '%s.%s' can't take value '%s': ", |
253 | object_get_typename(obj), prop->name, str); | |
becdfa00 | 254 | } |
2209401f | 255 | g_free(str); |
a404b612 EH |
256 | } |
257 | ||
becdfa00 | 258 | static void release_chr(Object *obj, const char *name, void *opaque) |
a404b612 | 259 | { |
becdfa00 MAL |
260 | DeviceState *dev = DEVICE(obj); |
261 | Property *prop = opaque; | |
262 | CharBackend *be = qdev_get_prop_ptr(dev, prop); | |
263 | ||
1ce2610c | 264 | qemu_chr_fe_deinit(be, false); |
a404b612 EH |
265 | } |
266 | ||
1b6b7d10 | 267 | const PropertyInfo qdev_prop_chr = { |
85ca1202 | 268 | .name = "str", |
51b2e8c3 | 269 | .description = "ID of a chardev to use as a backend", |
a404b612 EH |
270 | .get = get_chr, |
271 | .set = set_chr, | |
272 | .release = release_chr, | |
273 | }; | |
274 | ||
275 | /* --- netdev device --- */ | |
d7bce999 EB |
276 | static void get_netdev(Object *obj, Visitor *v, const char *name, |
277 | void *opaque, Error **errp) | |
23120b13 JW |
278 | { |
279 | DeviceState *dev = DEVICE(obj); | |
280 | Property *prop = opaque; | |
281 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); | |
282 | char *p = g_strdup(peers_ptr->ncs[0] ? peers_ptr->ncs[0]->name : ""); | |
283 | ||
51e72bc1 | 284 | visit_type_str(v, name, &p, errp); |
23120b13 JW |
285 | g_free(p); |
286 | } | |
a404b612 | 287 | |
d7bce999 EB |
288 | static void set_netdev(Object *obj, Visitor *v, const char *name, |
289 | void *opaque, Error **errp) | |
a404b612 | 290 | { |
23120b13 JW |
291 | DeviceState *dev = DEVICE(obj); |
292 | Property *prop = opaque; | |
293 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); | |
1ceef9f2 JW |
294 | NetClientState **ncs = peers_ptr->ncs; |
295 | NetClientState *peers[MAX_QUEUE_NUM]; | |
23120b13 JW |
296 | Error *local_err = NULL; |
297 | int queues, err = 0, i = 0; | |
298 | char *str; | |
299 | ||
300 | if (dev->realized) { | |
301 | qdev_prop_set_after_realize(dev, name, errp); | |
302 | return; | |
303 | } | |
304 | ||
51e72bc1 | 305 | visit_type_str(v, name, &str, &local_err); |
23120b13 JW |
306 | if (local_err) { |
307 | error_propagate(errp, local_err); | |
308 | return; | |
309 | } | |
a404b612 | 310 | |
1ceef9f2 | 311 | queues = qemu_find_net_clients_except(str, peers, |
f394b2e2 | 312 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
313 | MAX_QUEUE_NUM); |
314 | if (queues == 0) { | |
23120b13 JW |
315 | err = -ENOENT; |
316 | goto out; | |
a404b612 | 317 | } |
1ceef9f2 JW |
318 | |
319 | if (queues > MAX_QUEUE_NUM) { | |
23120b13 JW |
320 | error_setg(errp, "queues of backend '%s'(%d) exceeds QEMU limitation(%d)", |
321 | str, queues, MAX_QUEUE_NUM); | |
322 | goto out; | |
1ceef9f2 JW |
323 | } |
324 | ||
325 | for (i = 0; i < queues; i++) { | |
1ceef9f2 JW |
326 | |
327 | if (peers[i]->peer) { | |
23120b13 JW |
328 | err = -EEXIST; |
329 | goto out; | |
1ceef9f2 JW |
330 | } |
331 | ||
30c367ed | 332 | if (ncs[i]) { |
23120b13 JW |
333 | err = -EINVAL; |
334 | goto out; | |
30c367ed VY |
335 | } |
336 | ||
1ceef9f2 JW |
337 | ncs[i] = peers[i]; |
338 | ncs[i]->queue_index = i; | |
a404b612 | 339 | } |
1ceef9f2 | 340 | |
575a1c0e | 341 | peers_ptr->queues = queues; |
1ceef9f2 | 342 | |
23120b13 JW |
343 | out: |
344 | error_set_from_qdev_prop_error(errp, err, dev, prop, str); | |
345 | g_free(str); | |
a404b612 EH |
346 | } |
347 | ||
1b6b7d10 | 348 | const PropertyInfo qdev_prop_netdev = { |
85ca1202 | 349 | .name = "str", |
51b2e8c3 | 350 | .description = "ID of a netdev to use as a backend", |
a404b612 EH |
351 | .get = get_netdev, |
352 | .set = set_netdev, | |
353 | }; | |
354 | ||
a404b612 | 355 | |
9b3d111a MA |
356 | void qdev_prop_set_drive(DeviceState *dev, const char *name, |
357 | BlockBackend *value, Error **errp) | |
a404b612 | 358 | { |
8daea510 KW |
359 | const char *ref = ""; |
360 | ||
361 | if (value) { | |
362 | ref = blk_name(value); | |
363 | if (!*ref) { | |
be9721f4 | 364 | const BlockDriverState *bs = blk_bs(value); |
8daea510 KW |
365 | if (bs) { |
366 | ref = bdrv_get_node_name(bs); | |
367 | } | |
368 | } | |
369 | } | |
370 | ||
371 | object_property_set_str(OBJECT(dev), ref, name, errp); | |
a404b612 EH |
372 | } |
373 | ||
a404b612 | 374 | void qdev_prop_set_chr(DeviceState *dev, const char *name, |
0ec7b3e7 | 375 | Chardev *value) |
a404b612 | 376 | { |
a404b612 EH |
377 | assert(!value || value->label); |
378 | object_property_set_str(OBJECT(dev), | |
5433a0a8 | 379 | value ? value->label : "", name, &error_abort); |
a404b612 EH |
380 | } |
381 | ||
382 | void qdev_prop_set_netdev(DeviceState *dev, const char *name, | |
383 | NetClientState *value) | |
384 | { | |
a404b612 EH |
385 | assert(!value || value->name); |
386 | object_property_set_str(OBJECT(dev), | |
5433a0a8 | 387 | value ? value->name : "", name, &error_abort); |
a404b612 EH |
388 | } |
389 | ||
390 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) | |
391 | { | |
392 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); | |
393 | if (nd->netdev) { | |
394 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
395 | } | |
396 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && | |
397 | object_property_find(OBJECT(dev), "vectors", NULL)) { | |
398 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
399 | } | |
400 | nd->instantiated = 1; | |
401 | } |