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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" |
dccfcd0e | 23 | #include "sysemu/char.h" |
6e4a876b | 24 | #include "sysemu/iothread.h" |
a404b612 EH |
25 | |
26 | static void get_pointer(Object *obj, Visitor *v, Property *prop, | |
7d1de464 | 27 | char *(*print)(void *ptr), |
a404b612 EH |
28 | const char *name, Error **errp) |
29 | { | |
30 | DeviceState *dev = DEVICE(obj); | |
31 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
32 | char *p; | |
33 | ||
7d1de464 | 34 | p = *ptr ? print(*ptr) : g_strdup(""); |
51e72bc1 | 35 | visit_type_str(v, name, &p, errp); |
7d1de464 | 36 | g_free(p); |
a404b612 EH |
37 | } |
38 | ||
39 | static void set_pointer(Object *obj, Visitor *v, Property *prop, | |
f1fb9f0d PM |
40 | void (*parse)(DeviceState *dev, const char *str, |
41 | void **ptr, const char *propname, | |
42 | Error **errp), | |
a404b612 EH |
43 | const char *name, Error **errp) |
44 | { | |
45 | DeviceState *dev = DEVICE(obj); | |
46 | Error *local_err = NULL; | |
47 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
48 | char *str; | |
a404b612 | 49 | |
7983c8a3 | 50 | if (dev->realized) { |
b000dfbd | 51 | qdev_prop_set_after_realize(dev, name, errp); |
a404b612 EH |
52 | return; |
53 | } | |
54 | ||
51e72bc1 | 55 | visit_type_str(v, name, &str, &local_err); |
a404b612 EH |
56 | if (local_err) { |
57 | error_propagate(errp, local_err); | |
58 | return; | |
59 | } | |
60 | if (!*str) { | |
61 | g_free(str); | |
62 | *ptr = NULL; | |
63 | return; | |
64 | } | |
f1fb9f0d | 65 | parse(dev, str, ptr, prop->name, errp); |
a404b612 EH |
66 | g_free(str); |
67 | } | |
68 | ||
69 | /* --- drive --- */ | |
70 | ||
f1fb9f0d PM |
71 | static void parse_drive(DeviceState *dev, const char *str, void **ptr, |
72 | const char *propname, Error **errp) | |
a404b612 | 73 | { |
4be74634 | 74 | BlockBackend *blk; |
8daea510 | 75 | bool blk_created = false; |
d7086422 | 76 | int ret; |
a404b612 | 77 | |
4be74634 | 78 | blk = blk_by_name(str); |
8daea510 KW |
79 | if (!blk) { |
80 | BlockDriverState *bs = bdrv_lookup_bs(NULL, str, NULL); | |
81 | if (bs) { | |
6d0eb64d KW |
82 | /* FIXME Use real permissions */ |
83 | blk = blk_new(0, BLK_PERM_ALL); | |
8daea510 | 84 | blk_created = true; |
d7086422 KW |
85 | |
86 | ret = blk_insert_bs(blk, bs, errp); | |
87 | if (ret < 0) { | |
88 | goto fail; | |
89 | } | |
8daea510 KW |
90 | } |
91 | } | |
4be74634 | 92 | if (!blk) { |
f1fb9f0d PM |
93 | error_setg(errp, "Property '%s.%s' can't find value '%s'", |
94 | object_get_typename(OBJECT(dev)), propname, str); | |
8daea510 | 95 | goto fail; |
a404b612 | 96 | } |
4be74634 | 97 | if (blk_attach_dev(blk, dev) < 0) { |
62f7dbde PM |
98 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
99 | ||
a9d52a75 | 100 | if (dinfo && dinfo->type != IF_NONE) { |
62f7dbde PM |
101 | error_setg(errp, "Drive '%s' is already in use because " |
102 | "it has been automatically connected to another " | |
103 | "device (did you need 'if=none' in the drive options?)", | |
104 | str); | |
105 | } else { | |
106 | error_setg(errp, "Drive '%s' is already in use by another device", | |
107 | str); | |
108 | } | |
8daea510 | 109 | goto fail; |
a404b612 | 110 | } |
8daea510 | 111 | |
4be74634 | 112 | *ptr = blk; |
8daea510 KW |
113 | |
114 | fail: | |
115 | if (blk_created) { | |
116 | /* If we need to keep a reference, blk_attach_dev() took it */ | |
117 | blk_unref(blk); | |
118 | } | |
a404b612 EH |
119 | } |
120 | ||
121 | static void release_drive(Object *obj, const char *name, void *opaque) | |
122 | { | |
123 | DeviceState *dev = DEVICE(obj); | |
124 | Property *prop = opaque; | |
4be74634 | 125 | BlockBackend **ptr = qdev_get_prop_ptr(dev, prop); |
a404b612 EH |
126 | |
127 | if (*ptr) { | |
a404b612 | 128 | blockdev_auto_del(*ptr); |
8daea510 | 129 | blk_detach_dev(*ptr, dev); |
a404b612 EH |
130 | } |
131 | } | |
132 | ||
7d1de464 | 133 | static char *print_drive(void *ptr) |
a404b612 | 134 | { |
bd7c4176 KW |
135 | const char *name; |
136 | ||
137 | name = blk_name(ptr); | |
138 | if (!*name) { | |
139 | BlockDriverState *bs = blk_bs(ptr); | |
140 | if (bs) { | |
141 | name = bdrv_get_node_name(bs); | |
142 | } | |
143 | } | |
144 | return g_strdup(name); | |
a404b612 EH |
145 | } |
146 | ||
d7bce999 EB |
147 | static void get_drive(Object *obj, Visitor *v, const char *name, void *opaque, |
148 | Error **errp) | |
a404b612 EH |
149 | { |
150 | get_pointer(obj, v, opaque, print_drive, name, errp); | |
151 | } | |
152 | ||
d7bce999 EB |
153 | static void set_drive(Object *obj, Visitor *v, const char *name, void *opaque, |
154 | Error **errp) | |
a404b612 EH |
155 | { |
156 | set_pointer(obj, v, opaque, parse_drive, name, errp); | |
157 | } | |
158 | ||
159 | PropertyInfo qdev_prop_drive = { | |
85ca1202 | 160 | .name = "str", |
8daea510 | 161 | .description = "Node name or ID of a block device to use as a backend", |
a404b612 EH |
162 | .get = get_drive, |
163 | .set = set_drive, | |
164 | .release = release_drive, | |
165 | }; | |
166 | ||
167 | /* --- character device --- */ | |
168 | ||
becdfa00 MAL |
169 | static void get_chr(Object *obj, Visitor *v, const char *name, void *opaque, |
170 | Error **errp) | |
a404b612 | 171 | { |
becdfa00 MAL |
172 | DeviceState *dev = DEVICE(obj); |
173 | CharBackend *be = qdev_get_prop_ptr(dev, opaque); | |
174 | char *p; | |
175 | ||
176 | p = g_strdup(be->chr && be->chr->label ? be->chr->label : ""); | |
177 | visit_type_str(v, name, &p, errp); | |
178 | g_free(p); | |
a404b612 EH |
179 | } |
180 | ||
becdfa00 MAL |
181 | static void set_chr(Object *obj, Visitor *v, const char *name, void *opaque, |
182 | Error **errp) | |
a404b612 EH |
183 | { |
184 | DeviceState *dev = DEVICE(obj); | |
becdfa00 | 185 | Error *local_err = NULL; |
a404b612 | 186 | Property *prop = opaque; |
becdfa00 | 187 | CharBackend *be = qdev_get_prop_ptr(dev, prop); |
0ec7b3e7 | 188 | Chardev *s; |
becdfa00 | 189 | char *str; |
a404b612 | 190 | |
becdfa00 MAL |
191 | if (dev->realized) { |
192 | qdev_prop_set_after_realize(dev, name, errp); | |
193 | return; | |
a404b612 | 194 | } |
a404b612 | 195 | |
becdfa00 MAL |
196 | visit_type_str(v, name, &str, &local_err); |
197 | if (local_err) { | |
198 | error_propagate(errp, local_err); | |
199 | return; | |
200 | } | |
a404b612 | 201 | |
becdfa00 MAL |
202 | if (!*str) { |
203 | g_free(str); | |
204 | be->chr = NULL; | |
205 | return; | |
206 | } | |
a404b612 | 207 | |
becdfa00 | 208 | s = qemu_chr_find(str); |
becdfa00 MAL |
209 | if (s == NULL) { |
210 | error_setg(errp, "Property '%s.%s' can't find value '%s'", | |
211 | object_get_typename(obj), prop->name, str); | |
2209401f | 212 | } else if (!qemu_chr_fe_init(be, s, errp)) { |
c39860e6 MAL |
213 | error_prepend(errp, "Property '%s.%s' can't take value '%s': ", |
214 | object_get_typename(obj), prop->name, str); | |
becdfa00 | 215 | } |
2209401f | 216 | g_free(str); |
a404b612 EH |
217 | } |
218 | ||
becdfa00 | 219 | static void release_chr(Object *obj, const char *name, void *opaque) |
a404b612 | 220 | { |
becdfa00 MAL |
221 | DeviceState *dev = DEVICE(obj); |
222 | Property *prop = opaque; | |
223 | CharBackend *be = qdev_get_prop_ptr(dev, prop); | |
224 | ||
c39860e6 | 225 | qemu_chr_fe_deinit(be); |
a404b612 EH |
226 | } |
227 | ||
228 | PropertyInfo qdev_prop_chr = { | |
85ca1202 | 229 | .name = "str", |
51b2e8c3 | 230 | .description = "ID of a chardev to use as a backend", |
a404b612 EH |
231 | .get = get_chr, |
232 | .set = set_chr, | |
233 | .release = release_chr, | |
234 | }; | |
235 | ||
236 | /* --- netdev device --- */ | |
d7bce999 EB |
237 | static void get_netdev(Object *obj, Visitor *v, const char *name, |
238 | void *opaque, Error **errp) | |
23120b13 JW |
239 | { |
240 | DeviceState *dev = DEVICE(obj); | |
241 | Property *prop = opaque; | |
242 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); | |
243 | char *p = g_strdup(peers_ptr->ncs[0] ? peers_ptr->ncs[0]->name : ""); | |
244 | ||
51e72bc1 | 245 | visit_type_str(v, name, &p, errp); |
23120b13 JW |
246 | g_free(p); |
247 | } | |
a404b612 | 248 | |
d7bce999 EB |
249 | static void set_netdev(Object *obj, Visitor *v, const char *name, |
250 | void *opaque, Error **errp) | |
a404b612 | 251 | { |
23120b13 JW |
252 | DeviceState *dev = DEVICE(obj); |
253 | Property *prop = opaque; | |
254 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); | |
1ceef9f2 JW |
255 | NetClientState **ncs = peers_ptr->ncs; |
256 | NetClientState *peers[MAX_QUEUE_NUM]; | |
23120b13 JW |
257 | Error *local_err = NULL; |
258 | int queues, err = 0, i = 0; | |
259 | char *str; | |
260 | ||
261 | if (dev->realized) { | |
262 | qdev_prop_set_after_realize(dev, name, errp); | |
263 | return; | |
264 | } | |
265 | ||
51e72bc1 | 266 | visit_type_str(v, name, &str, &local_err); |
23120b13 JW |
267 | if (local_err) { |
268 | error_propagate(errp, local_err); | |
269 | return; | |
270 | } | |
a404b612 | 271 | |
1ceef9f2 | 272 | queues = qemu_find_net_clients_except(str, peers, |
f394b2e2 | 273 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
274 | MAX_QUEUE_NUM); |
275 | if (queues == 0) { | |
23120b13 JW |
276 | err = -ENOENT; |
277 | goto out; | |
a404b612 | 278 | } |
1ceef9f2 JW |
279 | |
280 | if (queues > MAX_QUEUE_NUM) { | |
23120b13 JW |
281 | error_setg(errp, "queues of backend '%s'(%d) exceeds QEMU limitation(%d)", |
282 | str, queues, MAX_QUEUE_NUM); | |
283 | goto out; | |
1ceef9f2 JW |
284 | } |
285 | ||
286 | for (i = 0; i < queues; i++) { | |
287 | if (peers[i] == NULL) { | |
23120b13 JW |
288 | err = -ENOENT; |
289 | goto out; | |
1ceef9f2 JW |
290 | } |
291 | ||
292 | if (peers[i]->peer) { | |
23120b13 JW |
293 | err = -EEXIST; |
294 | goto out; | |
1ceef9f2 JW |
295 | } |
296 | ||
30c367ed | 297 | if (ncs[i]) { |
23120b13 JW |
298 | err = -EINVAL; |
299 | goto out; | |
30c367ed VY |
300 | } |
301 | ||
1ceef9f2 JW |
302 | ncs[i] = peers[i]; |
303 | ncs[i]->queue_index = i; | |
a404b612 | 304 | } |
1ceef9f2 | 305 | |
575a1c0e | 306 | peers_ptr->queues = queues; |
1ceef9f2 | 307 | |
23120b13 JW |
308 | out: |
309 | error_set_from_qdev_prop_error(errp, err, dev, prop, str); | |
310 | g_free(str); | |
a404b612 EH |
311 | } |
312 | ||
313 | PropertyInfo qdev_prop_netdev = { | |
85ca1202 | 314 | .name = "str", |
51b2e8c3 | 315 | .description = "ID of a netdev to use as a backend", |
a404b612 EH |
316 | .get = get_netdev, |
317 | .set = set_netdev, | |
318 | }; | |
319 | ||
320 | /* --- vlan --- */ | |
321 | ||
322 | static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len) | |
323 | { | |
324 | NetClientState **ptr = qdev_get_prop_ptr(dev, prop); | |
325 | ||
326 | if (*ptr) { | |
327 | int id; | |
328 | if (!net_hub_id_for_client(*ptr, &id)) { | |
329 | return snprintf(dest, len, "%d", id); | |
330 | } | |
331 | } | |
332 | ||
333 | return snprintf(dest, len, "<null>"); | |
334 | } | |
335 | ||
d7bce999 EB |
336 | static void get_vlan(Object *obj, Visitor *v, const char *name, void *opaque, |
337 | Error **errp) | |
a404b612 EH |
338 | { |
339 | DeviceState *dev = DEVICE(obj); | |
340 | Property *prop = opaque; | |
341 | NetClientState **ptr = qdev_get_prop_ptr(dev, prop); | |
342 | int32_t id = -1; | |
343 | ||
344 | if (*ptr) { | |
345 | int hub_id; | |
346 | if (!net_hub_id_for_client(*ptr, &hub_id)) { | |
347 | id = hub_id; | |
348 | } | |
349 | } | |
350 | ||
51e72bc1 | 351 | visit_type_int32(v, name, &id, errp); |
a404b612 EH |
352 | } |
353 | ||
d7bce999 EB |
354 | static void set_vlan(Object *obj, Visitor *v, const char *name, void *opaque, |
355 | Error **errp) | |
a404b612 EH |
356 | { |
357 | DeviceState *dev = DEVICE(obj); | |
358 | Property *prop = opaque; | |
1ceef9f2 JW |
359 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); |
360 | NetClientState **ptr = &peers_ptr->ncs[0]; | |
a404b612 EH |
361 | Error *local_err = NULL; |
362 | int32_t id; | |
363 | NetClientState *hubport; | |
364 | ||
7983c8a3 | 365 | if (dev->realized) { |
b000dfbd | 366 | qdev_prop_set_after_realize(dev, name, errp); |
a404b612 EH |
367 | return; |
368 | } | |
369 | ||
51e72bc1 | 370 | visit_type_int32(v, name, &id, &local_err); |
a404b612 EH |
371 | if (local_err) { |
372 | error_propagate(errp, local_err); | |
373 | return; | |
374 | } | |
375 | if (id == -1) { | |
376 | *ptr = NULL; | |
377 | return; | |
378 | } | |
30c367ed VY |
379 | if (*ptr) { |
380 | error_set_from_qdev_prop_error(errp, -EINVAL, dev, prop, name); | |
381 | return; | |
382 | } | |
a404b612 EH |
383 | |
384 | hubport = net_hub_port_find(id); | |
385 | if (!hubport) { | |
c6bd8c70 MA |
386 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, |
387 | name, prop->info->name); | |
a404b612 EH |
388 | return; |
389 | } | |
390 | *ptr = hubport; | |
391 | } | |
392 | ||
393 | PropertyInfo qdev_prop_vlan = { | |
85ca1202 | 394 | .name = "int32", |
51b2e8c3 | 395 | .description = "Integer VLAN id to connect to", |
a404b612 EH |
396 | .print = print_vlan, |
397 | .get = get_vlan, | |
398 | .set = set_vlan, | |
399 | }; | |
400 | ||
9b3d111a MA |
401 | void qdev_prop_set_drive(DeviceState *dev, const char *name, |
402 | BlockBackend *value, Error **errp) | |
a404b612 | 403 | { |
8daea510 KW |
404 | const char *ref = ""; |
405 | ||
406 | if (value) { | |
407 | ref = blk_name(value); | |
408 | if (!*ref) { | |
409 | BlockDriverState *bs = blk_bs(value); | |
410 | if (bs) { | |
411 | ref = bdrv_get_node_name(bs); | |
412 | } | |
413 | } | |
414 | } | |
415 | ||
416 | object_property_set_str(OBJECT(dev), ref, name, errp); | |
a404b612 EH |
417 | } |
418 | ||
a404b612 | 419 | void qdev_prop_set_chr(DeviceState *dev, const char *name, |
0ec7b3e7 | 420 | Chardev *value) |
a404b612 | 421 | { |
a404b612 EH |
422 | assert(!value || value->label); |
423 | object_property_set_str(OBJECT(dev), | |
5433a0a8 | 424 | value ? value->label : "", name, &error_abort); |
a404b612 EH |
425 | } |
426 | ||
427 | void qdev_prop_set_netdev(DeviceState *dev, const char *name, | |
428 | NetClientState *value) | |
429 | { | |
a404b612 EH |
430 | assert(!value || value->name); |
431 | object_property_set_str(OBJECT(dev), | |
5433a0a8 | 432 | value ? value->name : "", name, &error_abort); |
a404b612 EH |
433 | } |
434 | ||
435 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) | |
436 | { | |
437 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); | |
438 | if (nd->netdev) { | |
439 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
440 | } | |
441 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && | |
442 | object_property_find(OBJECT(dev), "vectors", NULL)) { | |
443 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
444 | } | |
445 | nd->instantiated = 1; | |
446 | } |