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