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Commit | Line | Data |
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a404b612 EH |
1 | /* |
2 | * qdev property parsing and global properties | |
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 | ||
501a7ce7 | 13 | #include "net/net.h" |
83c9f4ca | 14 | #include "hw/qdev.h" |
501a7ce7 AF |
15 | #include "qapi/qmp/qerror.h" |
16 | #include "sysemu/blockdev.h" | |
0d09e41a | 17 | #include "hw/block/block.h" |
a404b612 | 18 | #include "net/hub.h" |
501a7ce7 | 19 | #include "qapi/visitor.h" |
dccfcd0e | 20 | #include "sysemu/char.h" |
a404b612 EH |
21 | |
22 | static void get_pointer(Object *obj, Visitor *v, Property *prop, | |
23 | const char *(*print)(void *ptr), | |
24 | const char *name, Error **errp) | |
25 | { | |
26 | DeviceState *dev = DEVICE(obj); | |
27 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
28 | char *p; | |
29 | ||
30 | p = (char *) (*ptr ? print(*ptr) : ""); | |
31 | visit_type_str(v, &p, name, errp); | |
32 | } | |
33 | ||
34 | static void set_pointer(Object *obj, Visitor *v, Property *prop, | |
35 | int (*parse)(DeviceState *dev, const char *str, | |
36 | void **ptr), | |
37 | const char *name, Error **errp) | |
38 | { | |
39 | DeviceState *dev = DEVICE(obj); | |
40 | Error *local_err = NULL; | |
41 | void **ptr = qdev_get_prop_ptr(dev, prop); | |
42 | char *str; | |
43 | int ret; | |
44 | ||
7983c8a3 | 45 | if (dev->realized) { |
b000dfbd | 46 | qdev_prop_set_after_realize(dev, name, errp); |
a404b612 EH |
47 | return; |
48 | } | |
49 | ||
50 | visit_type_str(v, &str, name, &local_err); | |
51 | if (local_err) { | |
52 | error_propagate(errp, local_err); | |
53 | return; | |
54 | } | |
55 | if (!*str) { | |
56 | g_free(str); | |
57 | *ptr = NULL; | |
58 | return; | |
59 | } | |
60 | ret = parse(dev, str, ptr); | |
61 | error_set_from_qdev_prop_error(errp, ret, dev, prop, str); | |
62 | g_free(str); | |
63 | } | |
64 | ||
65 | /* --- drive --- */ | |
66 | ||
67 | static int parse_drive(DeviceState *dev, const char *str, void **ptr) | |
68 | { | |
69 | BlockDriverState *bs; | |
70 | ||
71 | bs = bdrv_find(str); | |
72 | if (bs == NULL) { | |
73 | return -ENOENT; | |
74 | } | |
75 | if (bdrv_attach_dev(bs, dev) < 0) { | |
76 | return -EEXIST; | |
77 | } | |
78 | *ptr = bs; | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static void release_drive(Object *obj, const char *name, void *opaque) | |
83 | { | |
84 | DeviceState *dev = DEVICE(obj); | |
85 | Property *prop = opaque; | |
86 | BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop); | |
87 | ||
88 | if (*ptr) { | |
89 | bdrv_detach_dev(*ptr, dev); | |
90 | blockdev_auto_del(*ptr); | |
91 | } | |
92 | } | |
93 | ||
94 | static const char *print_drive(void *ptr) | |
95 | { | |
96 | return bdrv_get_device_name(ptr); | |
97 | } | |
98 | ||
99 | static void get_drive(Object *obj, Visitor *v, void *opaque, | |
100 | const char *name, Error **errp) | |
101 | { | |
102 | get_pointer(obj, v, opaque, print_drive, name, errp); | |
103 | } | |
104 | ||
105 | static void set_drive(Object *obj, Visitor *v, void *opaque, | |
106 | const char *name, Error **errp) | |
107 | { | |
108 | set_pointer(obj, v, opaque, parse_drive, name, errp); | |
109 | } | |
110 | ||
111 | PropertyInfo qdev_prop_drive = { | |
112 | .name = "drive", | |
113 | .get = get_drive, | |
114 | .set = set_drive, | |
115 | .release = release_drive, | |
116 | }; | |
117 | ||
118 | /* --- character device --- */ | |
119 | ||
120 | static int parse_chr(DeviceState *dev, const char *str, void **ptr) | |
121 | { | |
122 | CharDriverState *chr = qemu_chr_find(str); | |
123 | if (chr == NULL) { | |
124 | return -ENOENT; | |
125 | } | |
44c473de | 126 | if (qemu_chr_fe_claim(chr) != 0) { |
a404b612 EH |
127 | return -EEXIST; |
128 | } | |
129 | *ptr = chr; | |
a404b612 EH |
130 | return 0; |
131 | } | |
132 | ||
133 | static void release_chr(Object *obj, const char *name, void *opaque) | |
134 | { | |
135 | DeviceState *dev = DEVICE(obj); | |
136 | Property *prop = opaque; | |
137 | CharDriverState **ptr = qdev_get_prop_ptr(dev, prop); | |
85d91e32 | 138 | CharDriverState *chr = *ptr; |
a404b612 | 139 | |
85d91e32 HG |
140 | if (chr) { |
141 | qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL); | |
44c473de | 142 | qemu_chr_fe_release(chr); |
a404b612 EH |
143 | } |
144 | } | |
145 | ||
146 | ||
147 | static const char *print_chr(void *ptr) | |
148 | { | |
149 | CharDriverState *chr = ptr; | |
150 | ||
151 | return chr->label ? chr->label : ""; | |
152 | } | |
153 | ||
154 | static void get_chr(Object *obj, Visitor *v, void *opaque, | |
155 | const char *name, Error **errp) | |
156 | { | |
157 | get_pointer(obj, v, opaque, print_chr, name, errp); | |
158 | } | |
159 | ||
160 | static void set_chr(Object *obj, Visitor *v, void *opaque, | |
161 | const char *name, Error **errp) | |
162 | { | |
163 | set_pointer(obj, v, opaque, parse_chr, name, errp); | |
164 | } | |
165 | ||
166 | PropertyInfo qdev_prop_chr = { | |
167 | .name = "chr", | |
168 | .get = get_chr, | |
169 | .set = set_chr, | |
170 | .release = release_chr, | |
171 | }; | |
172 | ||
173 | /* --- netdev device --- */ | |
174 | ||
175 | static int parse_netdev(DeviceState *dev, const char *str, void **ptr) | |
176 | { | |
1ceef9f2 JW |
177 | NICPeers *peers_ptr = (NICPeers *)ptr; |
178 | NICConf *conf = container_of(peers_ptr, NICConf, peers); | |
179 | NetClientState **ncs = peers_ptr->ncs; | |
180 | NetClientState *peers[MAX_QUEUE_NUM]; | |
181 | int queues, i = 0; | |
182 | int ret; | |
a404b612 | 183 | |
1ceef9f2 JW |
184 | queues = qemu_find_net_clients_except(str, peers, |
185 | NET_CLIENT_OPTIONS_KIND_NIC, | |
186 | MAX_QUEUE_NUM); | |
187 | if (queues == 0) { | |
188 | ret = -ENOENT; | |
189 | goto err; | |
a404b612 | 190 | } |
1ceef9f2 JW |
191 | |
192 | if (queues > MAX_QUEUE_NUM) { | |
193 | ret = -E2BIG; | |
194 | goto err; | |
195 | } | |
196 | ||
197 | for (i = 0; i < queues; i++) { | |
198 | if (peers[i] == NULL) { | |
199 | ret = -ENOENT; | |
200 | goto err; | |
201 | } | |
202 | ||
203 | if (peers[i]->peer) { | |
204 | ret = -EEXIST; | |
205 | goto err; | |
206 | } | |
207 | ||
208 | ncs[i] = peers[i]; | |
209 | ncs[i]->queue_index = i; | |
a404b612 | 210 | } |
1ceef9f2 JW |
211 | |
212 | conf->queues = queues; | |
213 | ||
a404b612 | 214 | return 0; |
1ceef9f2 JW |
215 | |
216 | err: | |
217 | return ret; | |
a404b612 EH |
218 | } |
219 | ||
220 | static const char *print_netdev(void *ptr) | |
221 | { | |
222 | NetClientState *netdev = ptr; | |
223 | ||
224 | return netdev->name ? netdev->name : ""; | |
225 | } | |
226 | ||
227 | static void get_netdev(Object *obj, Visitor *v, void *opaque, | |
228 | const char *name, Error **errp) | |
229 | { | |
230 | get_pointer(obj, v, opaque, print_netdev, name, errp); | |
231 | } | |
232 | ||
233 | static void set_netdev(Object *obj, Visitor *v, void *opaque, | |
234 | const char *name, Error **errp) | |
235 | { | |
236 | set_pointer(obj, v, opaque, parse_netdev, name, errp); | |
237 | } | |
238 | ||
239 | PropertyInfo qdev_prop_netdev = { | |
240 | .name = "netdev", | |
241 | .get = get_netdev, | |
242 | .set = set_netdev, | |
243 | }; | |
244 | ||
245 | /* --- vlan --- */ | |
246 | ||
247 | static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len) | |
248 | { | |
249 | NetClientState **ptr = qdev_get_prop_ptr(dev, prop); | |
250 | ||
251 | if (*ptr) { | |
252 | int id; | |
253 | if (!net_hub_id_for_client(*ptr, &id)) { | |
254 | return snprintf(dest, len, "%d", id); | |
255 | } | |
256 | } | |
257 | ||
258 | return snprintf(dest, len, "<null>"); | |
259 | } | |
260 | ||
261 | static void get_vlan(Object *obj, Visitor *v, void *opaque, | |
262 | const char *name, Error **errp) | |
263 | { | |
264 | DeviceState *dev = DEVICE(obj); | |
265 | Property *prop = opaque; | |
266 | NetClientState **ptr = qdev_get_prop_ptr(dev, prop); | |
267 | int32_t id = -1; | |
268 | ||
269 | if (*ptr) { | |
270 | int hub_id; | |
271 | if (!net_hub_id_for_client(*ptr, &hub_id)) { | |
272 | id = hub_id; | |
273 | } | |
274 | } | |
275 | ||
276 | visit_type_int32(v, &id, name, errp); | |
277 | } | |
278 | ||
279 | static void set_vlan(Object *obj, Visitor *v, void *opaque, | |
280 | const char *name, Error **errp) | |
281 | { | |
282 | DeviceState *dev = DEVICE(obj); | |
283 | Property *prop = opaque; | |
1ceef9f2 JW |
284 | NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); |
285 | NetClientState **ptr = &peers_ptr->ncs[0]; | |
a404b612 EH |
286 | Error *local_err = NULL; |
287 | int32_t id; | |
288 | NetClientState *hubport; | |
289 | ||
7983c8a3 | 290 | if (dev->realized) { |
b000dfbd | 291 | qdev_prop_set_after_realize(dev, name, errp); |
a404b612 EH |
292 | return; |
293 | } | |
294 | ||
295 | visit_type_int32(v, &id, name, &local_err); | |
296 | if (local_err) { | |
297 | error_propagate(errp, local_err); | |
298 | return; | |
299 | } | |
300 | if (id == -1) { | |
301 | *ptr = NULL; | |
302 | return; | |
303 | } | |
304 | ||
305 | hubport = net_hub_port_find(id); | |
306 | if (!hubport) { | |
307 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, | |
308 | name, prop->info->name); | |
309 | return; | |
310 | } | |
311 | *ptr = hubport; | |
312 | } | |
313 | ||
314 | PropertyInfo qdev_prop_vlan = { | |
315 | .name = "vlan", | |
316 | .print = print_vlan, | |
317 | .get = get_vlan, | |
318 | .set = set_vlan, | |
319 | }; | |
320 | ||
321 | int qdev_prop_set_drive(DeviceState *dev, const char *name, | |
322 | BlockDriverState *value) | |
323 | { | |
324 | Error *errp = NULL; | |
325 | const char *bdrv_name = value ? bdrv_get_device_name(value) : ""; | |
326 | object_property_set_str(OBJECT(dev), bdrv_name, | |
327 | name, &errp); | |
328 | if (errp) { | |
329 | qerror_report_err(errp); | |
330 | error_free(errp); | |
331 | return -1; | |
332 | } | |
333 | return 0; | |
334 | } | |
335 | ||
336 | void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, | |
337 | BlockDriverState *value) | |
338 | { | |
339 | if (qdev_prop_set_drive(dev, name, value) < 0) { | |
340 | exit(1); | |
341 | } | |
342 | } | |
343 | void qdev_prop_set_chr(DeviceState *dev, const char *name, | |
344 | CharDriverState *value) | |
345 | { | |
346 | Error *errp = NULL; | |
347 | assert(!value || value->label); | |
348 | object_property_set_str(OBJECT(dev), | |
349 | value ? value->label : "", name, &errp); | |
350 | assert_no_error(errp); | |
351 | } | |
352 | ||
353 | void qdev_prop_set_netdev(DeviceState *dev, const char *name, | |
354 | NetClientState *value) | |
355 | { | |
356 | Error *errp = NULL; | |
357 | assert(!value || value->name); | |
358 | object_property_set_str(OBJECT(dev), | |
359 | value ? value->name : "", name, &errp); | |
360 | assert_no_error(errp); | |
361 | } | |
362 | ||
363 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) | |
364 | { | |
365 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); | |
366 | if (nd->netdev) { | |
367 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
368 | } | |
369 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && | |
370 | object_property_find(OBJECT(dev), "vectors", NULL)) { | |
371 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
372 | } | |
373 | nd->instantiated = 1; | |
374 | } | |
375 | ||
376 | static int qdev_add_one_global(QemuOpts *opts, void *opaque) | |
377 | { | |
378 | GlobalProperty *g; | |
379 | ||
380 | g = g_malloc0(sizeof(*g)); | |
381 | g->driver = qemu_opt_get(opts, "driver"); | |
382 | g->property = qemu_opt_get(opts, "property"); | |
383 | g->value = qemu_opt_get(opts, "value"); | |
384 | qdev_prop_register_global(g); | |
385 | return 0; | |
386 | } | |
387 | ||
388 | void qemu_add_globals(void) | |
389 | { | |
390 | qemu_opts_foreach(qemu_find_opts("global"), qdev_add_one_global, NULL, 0); | |
391 | } |