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aae9460e PB |
1 | /* |
2 | * Dynamic device configuration and creation. | |
3 | * | |
4 | * Copyright (c) 2009 CodeSourcery | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
8167ee88 | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
aae9460e PB |
18 | */ |
19 | ||
20 | /* The theory here is that it should be possible to create a machine without | |
21 | knowledge of specific devices. Historically board init routines have | |
22 | passed a bunch of arguments to each device, requiring the board know | |
23 | exactly which device it is dealing with. This file provides an abstract | |
24 | API for device configuration and initialization. Devices will generally | |
25 | inherit from a particular bus (e.g. PCI or I2C) rather than | |
26 | this API directly. */ | |
27 | ||
9d07d757 | 28 | #include "net.h" |
aae9460e PB |
29 | #include "qdev.h" |
30 | #include "sysemu.h" | |
56f9107e | 31 | #include "error.h" |
aae9460e | 32 | |
ee46d8a5 | 33 | int qdev_hotplug = 0; |
0ac8ef71 AW |
34 | static bool qdev_hot_added = false; |
35 | static bool qdev_hot_removed = false; | |
3418bd25 | 36 | |
aae9460e | 37 | /* Register a new device type. */ |
4be9f0d1 AL |
38 | const VMStateDescription *qdev_get_vmsd(DeviceState *dev) |
39 | { | |
6e008585 AL |
40 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
41 | return dc->vmsd; | |
4be9f0d1 AL |
42 | } |
43 | ||
4be9f0d1 AL |
44 | const char *qdev_fw_name(DeviceState *dev) |
45 | { | |
6e008585 | 46 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
4be9f0d1 | 47 | |
6e008585 AL |
48 | if (dc->fw_name) { |
49 | return dc->fw_name; | |
4be9f0d1 AL |
50 | } |
51 | ||
52 | return object_get_typename(OBJECT(dev)); | |
53 | } | |
54 | ||
a369da5f BS |
55 | bool qdev_exists(const char *name) |
56 | { | |
212ad111 | 57 | return !!object_class_by_name(name); |
a369da5f | 58 | } |
40021f08 | 59 | |
ca2cc788 PB |
60 | static void qdev_property_add_legacy(DeviceState *dev, Property *prop, |
61 | Error **errp); | |
62 | ||
9fbe6127 | 63 | void qdev_set_parent_bus(DeviceState *dev, BusState *bus) |
0c17542d | 64 | { |
0c17542d MA |
65 | if (qdev_hotplug) { |
66 | assert(bus->allow_hotplug); | |
0c17542d | 67 | } |
a5296ca9 | 68 | |
9fbe6127 | 69 | dev->parent_bus = bus; |
9674bfe4 | 70 | QTAILQ_INSERT_HEAD(&bus->children, dev, sibling); |
0c17542d MA |
71 | } |
72 | ||
aae9460e PB |
73 | /* Create a new device. This only initializes the device state structure |
74 | and allows properties to be set. qdev_init should be called to | |
75 | initialize the actual device emulation. */ | |
02e2da45 | 76 | DeviceState *qdev_create(BusState *bus, const char *name) |
0bcdeda7 BS |
77 | { |
78 | DeviceState *dev; | |
79 | ||
80 | dev = qdev_try_create(bus, name); | |
81 | if (!dev) { | |
e92714c7 PM |
82 | if (bus) { |
83 | hw_error("Unknown device '%s' for bus '%s'\n", name, | |
0d936928 | 84 | object_get_typename(OBJECT(bus))); |
e92714c7 PM |
85 | } else { |
86 | hw_error("Unknown device '%s' for default sysbus\n", name); | |
87 | } | |
0bcdeda7 BS |
88 | } |
89 | ||
90 | return dev; | |
91 | } | |
92 | ||
da57febf | 93 | DeviceState *qdev_try_create(BusState *bus, const char *type) |
aae9460e | 94 | { |
9fbe6127 AL |
95 | DeviceState *dev; |
96 | ||
da57febf | 97 | if (object_class_by_name(type) == NULL) { |
4ed658ca AF |
98 | return NULL; |
99 | } | |
da57febf | 100 | dev = DEVICE(object_new(type)); |
9fbe6127 AL |
101 | if (!dev) { |
102 | return NULL; | |
103 | } | |
104 | ||
10c4c98a | 105 | if (!bus) { |
68694897 | 106 | bus = sysbus_get_default(); |
10c4c98a GH |
107 | } |
108 | ||
9fbe6127 | 109 | qdev_set_parent_bus(dev, bus); |
9fbe6127 AL |
110 | |
111 | return dev; | |
aae9460e PB |
112 | } |
113 | ||
114 | /* Initialize a device. Device properties should be set before calling | |
115 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
116 | calling this function. |
117 | On failure, destroy the device and return negative value. | |
118 | Return 0 on success. */ | |
81a322d4 | 119 | int qdev_init(DeviceState *dev) |
aae9460e | 120 | { |
6e008585 | 121 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
959f733a GH |
122 | int rc; |
123 | ||
131ec1bd | 124 | assert(dev->state == DEV_STATE_CREATED); |
6e008585 | 125 | |
d307af79 | 126 | rc = dc->init(dev); |
18cfeb52 MA |
127 | if (rc < 0) { |
128 | qdev_free(dev); | |
959f733a | 129 | return rc; |
18cfeb52 | 130 | } |
da57febf PB |
131 | |
132 | if (!OBJECT(dev)->parent) { | |
133 | static int unattached_count = 0; | |
134 | gchar *name = g_strdup_printf("device[%d]", unattached_count++); | |
135 | ||
dfe47e70 AF |
136 | object_property_add_child(container_get(qdev_get_machine(), |
137 | "/unattached"), | |
138 | name, OBJECT(dev), NULL); | |
da57febf PB |
139 | g_free(name); |
140 | } | |
141 | ||
6e008585 AL |
142 | if (qdev_get_vmsd(dev)) { |
143 | vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, | |
4d2ffa08 JK |
144 | dev->instance_id_alias, |
145 | dev->alias_required_for_version); | |
146 | } | |
131ec1bd | 147 | dev->state = DEV_STATE_INITIALIZED; |
94afdadc AL |
148 | if (dev->hotplugged) { |
149 | device_reset(dev); | |
5ab28c83 | 150 | } |
959f733a | 151 | return 0; |
02e2da45 PB |
152 | } |
153 | ||
4d2ffa08 JK |
154 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
155 | int required_for_version) | |
156 | { | |
157 | assert(dev->state == DEV_STATE_CREATED); | |
158 | dev->instance_id_alias = alias_id; | |
159 | dev->alias_required_for_version = required_for_version; | |
160 | } | |
161 | ||
56f9107e | 162 | void qdev_unplug(DeviceState *dev, Error **errp) |
3418bd25 | 163 | { |
6e008585 AL |
164 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
165 | ||
3418bd25 | 166 | if (!dev->parent_bus->allow_hotplug) { |
56f9107e LC |
167 | error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
168 | return; | |
3418bd25 | 169 | } |
6e008585 | 170 | assert(dc->unplug != NULL); |
593831de | 171 | |
0ac8ef71 AW |
172 | qdev_hot_removed = true; |
173 | ||
56f9107e LC |
174 | if (dc->unplug(dev) < 0) { |
175 | error_set(errp, QERR_UNDEFINED_ERROR); | |
176 | return; | |
177 | } | |
3418bd25 GH |
178 | } |
179 | ||
ec990eb6 AL |
180 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
181 | { | |
94afdadc | 182 | device_reset(dev); |
ec990eb6 AL |
183 | |
184 | return 0; | |
185 | } | |
186 | ||
b4694b7c IY |
187 | static int qbus_reset_one(BusState *bus, void *opaque) |
188 | { | |
0d936928 AL |
189 | BusClass *bc = BUS_GET_CLASS(bus); |
190 | if (bc->reset) { | |
191 | return bc->reset(bus); | |
b4694b7c IY |
192 | } |
193 | return 0; | |
194 | } | |
195 | ||
5af0a04b IY |
196 | void qdev_reset_all(DeviceState *dev) |
197 | { | |
198 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
199 | } | |
200 | ||
80376c3f IY |
201 | void qbus_reset_all_fn(void *opaque) |
202 | { | |
203 | BusState *bus = opaque; | |
f530cce3 | 204 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); |
80376c3f IY |
205 | } |
206 | ||
3418bd25 GH |
207 | /* can be used as ->unplug() callback for the simple cases */ |
208 | int qdev_simple_unplug_cb(DeviceState *dev) | |
209 | { | |
210 | /* just zap it */ | |
57c9fafe | 211 | object_unparent(OBJECT(dev)); |
3418bd25 GH |
212 | qdev_free(dev); |
213 | return 0; | |
214 | } | |
215 | ||
3b29a101 MT |
216 | |
217 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
218 | returning an error value. This is okay during machine creation. |
219 | Don't use for hotplug, because there callers need to recover from | |
220 | failure. Exception: if you know the device's init() callback can't | |
221 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
222 | usable even then. But relying on the device implementation that | |
223 | way is somewhat unclean, and best avoided. */ | |
224 | void qdev_init_nofail(DeviceState *dev) | |
225 | { | |
bd6c9a61 | 226 | if (qdev_init(dev) < 0) { |
6e008585 AL |
227 | error_report("Initialization of device %s failed", |
228 | object_get_typename(OBJECT(dev))); | |
bd6c9a61 MA |
229 | exit(1); |
230 | } | |
e23a1b33 MA |
231 | } |
232 | ||
02e2da45 PB |
233 | /* Unlink device from bus and free the structure. */ |
234 | void qdev_free(DeviceState *dev) | |
235 | { | |
32fea402 | 236 | object_delete(OBJECT(dev)); |
aae9460e PB |
237 | } |
238 | ||
3418bd25 GH |
239 | void qdev_machine_creation_done(void) |
240 | { | |
241 | /* | |
242 | * ok, initial machine setup is done, starting from now we can | |
243 | * only create hotpluggable devices | |
244 | */ | |
245 | qdev_hotplug = 1; | |
246 | } | |
247 | ||
0ac8ef71 AW |
248 | bool qdev_machine_modified(void) |
249 | { | |
250 | return qdev_hot_added || qdev_hot_removed; | |
251 | } | |
252 | ||
02e2da45 | 253 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 254 | { |
02e2da45 | 255 | return dev->parent_bus; |
aae9460e PB |
256 | } |
257 | ||
aae9460e PB |
258 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
259 | { | |
260 | assert(dev->num_gpio_in == 0); | |
261 | dev->num_gpio_in = n; | |
262 | dev->gpio_in = qemu_allocate_irqs(handler, dev, n); | |
263 | } | |
264 | ||
265 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
266 | { | |
267 | assert(dev->num_gpio_out == 0); | |
268 | dev->num_gpio_out = n; | |
269 | dev->gpio_out = pins; | |
270 | } | |
271 | ||
272 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
273 | { | |
274 | assert(n >= 0 && n < dev->num_gpio_in); | |
275 | return dev->gpio_in[n]; | |
276 | } | |
277 | ||
278 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
279 | { | |
280 | assert(n >= 0 && n < dev->num_gpio_out); | |
281 | dev->gpio_out[n] = pin; | |
282 | } | |
283 | ||
ed16ab5a GH |
284 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) |
285 | { | |
6eed1856 | 286 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); |
ed16ab5a GH |
287 | if (nd->vlan) |
288 | qdev_prop_set_vlan(dev, "vlan", nd->vlan); | |
289 | if (nd->netdev) | |
290 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
75422b0d | 291 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && |
97b15621 GH |
292 | qdev_prop_exists(dev, "vectors")) { |
293 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
294 | } | |
48e2faf2 | 295 | nd->instantiated = 1; |
ed16ab5a GH |
296 | } |
297 | ||
02e2da45 | 298 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 299 | { |
02e2da45 | 300 | BusState *bus; |
4d6ae674 | 301 | |
72cf2d4f | 302 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 303 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 304 | return bus; |
4d6ae674 PB |
305 | } |
306 | } | |
307 | return NULL; | |
308 | } | |
309 | ||
81699d8a AL |
310 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
311 | qbus_walkerfn *busfn, void *opaque) | |
312 | { | |
313 | DeviceState *dev; | |
314 | int err; | |
315 | ||
316 | if (busfn) { | |
317 | err = busfn(bus, opaque); | |
318 | if (err) { | |
319 | return err; | |
320 | } | |
321 | } | |
322 | ||
d8bb00d6 | 323 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
81699d8a AL |
324 | err = qdev_walk_children(dev, devfn, busfn, opaque); |
325 | if (err < 0) { | |
326 | return err; | |
327 | } | |
328 | } | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
334 | qbus_walkerfn *busfn, void *opaque) | |
335 | { | |
336 | BusState *bus; | |
337 | int err; | |
338 | ||
339 | if (devfn) { | |
340 | err = devfn(dev, opaque); | |
341 | if (err) { | |
342 | return err; | |
343 | } | |
344 | } | |
345 | ||
346 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
347 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
348 | if (err < 0) { | |
349 | return err; | |
350 | } | |
351 | } | |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
a2ee6b4f | 356 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 GH |
357 | { |
358 | DeviceState *dev, *ret; | |
359 | BusState *child; | |
360 | ||
d8bb00d6 | 361 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
3418bd25 GH |
362 | if (dev->id && strcmp(dev->id, id) == 0) |
363 | return dev; | |
364 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
365 | ret = qdev_find_recursive(child, id); | |
366 | if (ret) { | |
367 | return ret; | |
368 | } | |
369 | } | |
370 | } | |
371 | return NULL; | |
372 | } | |
373 | ||
0d936928 AL |
374 | /* FIXME move this logic into instance_init */ |
375 | static void do_qbus_create_inplace(BusState *bus, const char *typename, | |
376 | DeviceState *parent, const char *name) | |
02e2da45 | 377 | { |
d271de9f GH |
378 | char *buf; |
379 | int i,len; | |
02e2da45 | 380 | |
02e2da45 | 381 | bus->parent = parent; |
d271de9f GH |
382 | |
383 | if (name) { | |
384 | /* use supplied name */ | |
7267c094 | 385 | bus->name = g_strdup(name); |
d271de9f GH |
386 | } else if (parent && parent->id) { |
387 | /* parent device has id -> use it for bus name */ | |
388 | len = strlen(parent->id) + 16; | |
7267c094 | 389 | buf = g_malloc(len); |
d271de9f GH |
390 | snprintf(buf, len, "%s.%d", parent->id, parent->num_child_bus); |
391 | bus->name = buf; | |
392 | } else { | |
393 | /* no id -> use lowercase bus type for bus name */ | |
0d936928 | 394 | len = strlen(typename) + 16; |
7267c094 | 395 | buf = g_malloc(len); |
0d936928 | 396 | len = snprintf(buf, len, "%s.%d", typename, |
d271de9f GH |
397 | parent ? parent->num_child_bus : 0); |
398 | for (i = 0; i < len; i++) | |
bb87ece5 | 399 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
400 | bus->name = buf; |
401 | } | |
402 | ||
d8bb00d6 | 403 | QTAILQ_INIT(&bus->children); |
02e2da45 | 404 | if (parent) { |
72cf2d4f | 405 | QLIST_INSERT_HEAD(&parent->child_bus, bus, sibling); |
d271de9f | 406 | parent->num_child_bus++; |
8185d216 | 407 | } else if (bus != sysbus_get_default()) { |
80376c3f IY |
408 | /* TODO: once all bus devices are qdevified, |
409 | only reset handler for main_system_bus should be registered here. */ | |
410 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 411 | } |
cd739fb6 GH |
412 | } |
413 | ||
0d936928 AL |
414 | void qbus_create_inplace(BusState *bus, const char *typename, |
415 | DeviceState *parent, const char *name) | |
416 | { | |
417 | object_initialize(bus, typename); | |
418 | do_qbus_create_inplace(bus, typename, parent, name); | |
419 | } | |
420 | ||
421 | BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) | |
cd739fb6 GH |
422 | { |
423 | BusState *bus; | |
424 | ||
0d936928 AL |
425 | bus = BUS(object_new(typename)); |
426 | bus->qom_allocated = true; | |
427 | do_qbus_create_inplace(bus, typename, parent, name); | |
02e2da45 PB |
428 | return bus; |
429 | } | |
cae4956e | 430 | |
131ec1bd GH |
431 | void qbus_free(BusState *bus) |
432 | { | |
433 | DeviceState *dev; | |
434 | ||
d8bb00d6 | 435 | while ((dev = QTAILQ_FIRST(&bus->children)) != NULL) { |
131ec1bd GH |
436 | qdev_free(dev); |
437 | } | |
438 | if (bus->parent) { | |
439 | QLIST_REMOVE(bus, sibling); | |
440 | bus->parent->num_child_bus--; | |
80376c3f | 441 | } else { |
8185d216 | 442 | assert(bus != sysbus_get_default()); /* main_system_bus is never freed */ |
80376c3f | 443 | qemu_unregister_reset(qbus_reset_all_fn, bus); |
131ec1bd | 444 | } |
7267c094 | 445 | g_free((void*)bus->name); |
0d936928 AL |
446 | if (bus->qom_allocated) { |
447 | object_delete(OBJECT(bus)); | |
448 | } else { | |
449 | object_finalize(OBJECT(bus)); | |
450 | if (bus->glib_allocated) { | |
451 | g_free(bus); | |
452 | } | |
453 | } | |
454 | } | |
455 | ||
456 | static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) | |
457 | { | |
458 | BusClass *bc = BUS_GET_CLASS(bus); | |
459 | ||
460 | if (bc->get_fw_dev_path) { | |
461 | return bc->get_fw_dev_path(dev); | |
131ec1bd | 462 | } |
0d936928 AL |
463 | |
464 | return NULL; | |
131ec1bd GH |
465 | } |
466 | ||
1ca4d09a GN |
467 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
468 | { | |
469 | int l = 0; | |
470 | ||
471 | if (dev && dev->parent_bus) { | |
472 | char *d; | |
473 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
0d936928 AL |
474 | d = bus_get_fw_dev_path(dev->parent_bus, dev); |
475 | if (d) { | |
1ca4d09a | 476 | l += snprintf(p + l, size - l, "%s", d); |
7267c094 | 477 | g_free(d); |
1ca4d09a | 478 | } else { |
f79f2bfc | 479 | l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev))); |
1ca4d09a GN |
480 | } |
481 | } | |
482 | l += snprintf(p + l , size - l, "/"); | |
483 | ||
484 | return l; | |
485 | } | |
486 | ||
487 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
488 | { | |
489 | char path[128]; | |
490 | int l; | |
491 | ||
492 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
493 | ||
494 | path[l-1] = '\0'; | |
495 | ||
496 | return strdup(path); | |
497 | } | |
85ed303b | 498 | |
09e5ab63 AL |
499 | char *qdev_get_dev_path(DeviceState *dev) |
500 | { | |
0d936928 | 501 | BusClass *bc; |
09e5ab63 AL |
502 | |
503 | if (!dev || !dev->parent_bus) { | |
504 | return NULL; | |
505 | } | |
506 | ||
0d936928 AL |
507 | bc = BUS_GET_CLASS(dev->parent_bus); |
508 | if (bc->get_dev_path) { | |
509 | return bc->get_dev_path(dev); | |
09e5ab63 AL |
510 | } |
511 | ||
512 | return NULL; | |
513 | } | |
514 | ||
a5296ca9 AL |
515 | /** |
516 | * Legacy property handling | |
517 | */ | |
518 | ||
57c9fafe | 519 | static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
520 | const char *name, Error **errp) |
521 | { | |
57c9fafe | 522 | DeviceState *dev = DEVICE(obj); |
a5296ca9 AL |
523 | Property *prop = opaque; |
524 | ||
e3cb6ba6 PB |
525 | char buffer[1024]; |
526 | char *ptr = buffer; | |
a5296ca9 | 527 | |
e3cb6ba6 PB |
528 | prop->info->print(dev, prop, buffer, sizeof(buffer)); |
529 | visit_type_str(v, &ptr, name, errp); | |
a5296ca9 AL |
530 | } |
531 | ||
57c9fafe | 532 | static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
533 | const char *name, Error **errp) |
534 | { | |
57c9fafe | 535 | DeviceState *dev = DEVICE(obj); |
a5296ca9 | 536 | Property *prop = opaque; |
e3cb6ba6 PB |
537 | Error *local_err = NULL; |
538 | char *ptr = NULL; | |
539 | int ret; | |
a5296ca9 AL |
540 | |
541 | if (dev->state != DEV_STATE_CREATED) { | |
542 | error_set(errp, QERR_PERMISSION_DENIED); | |
543 | return; | |
544 | } | |
545 | ||
e3cb6ba6 PB |
546 | visit_type_str(v, &ptr, name, &local_err); |
547 | if (local_err) { | |
548 | error_propagate(errp, local_err); | |
549 | return; | |
550 | } | |
a5296ca9 | 551 | |
e3cb6ba6 | 552 | ret = prop->info->parse(dev, prop, ptr); |
7db4c4e8 | 553 | error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
e3cb6ba6 | 554 | g_free(ptr); |
a5296ca9 AL |
555 | } |
556 | ||
557 | /** | |
558 | * @qdev_add_legacy_property - adds a legacy property | |
559 | * | |
560 | * Do not use this is new code! Properties added through this interface will | |
ca2cc788 | 561 | * be given names and types in the "legacy" namespace. |
a5296ca9 | 562 | * |
68ee3569 PB |
563 | * Legacy properties are string versions of other OOM properties. The format |
564 | * of the string depends on the property type. | |
a5296ca9 AL |
565 | */ |
566 | void qdev_property_add_legacy(DeviceState *dev, Property *prop, | |
567 | Error **errp) | |
568 | { | |
ca2cc788 | 569 | gchar *name, *type; |
a5296ca9 | 570 | |
f3be016d AL |
571 | /* Register pointer properties as legacy properties */ |
572 | if (!prop->info->print && !prop->info->parse && | |
573 | (prop->info->set || prop->info->get)) { | |
68ee3569 PB |
574 | return; |
575 | } | |
f3be016d | 576 | |
ca2cc788 | 577 | name = g_strdup_printf("legacy-%s", prop->name); |
cafe5bdb PB |
578 | type = g_strdup_printf("legacy<%s>", |
579 | prop->info->legacy_name ?: prop->info->name); | |
a5296ca9 | 580 | |
57c9fafe | 581 | object_property_add(OBJECT(dev), name, type, |
68ee3569 PB |
582 | prop->info->print ? qdev_get_legacy_property : prop->info->get, |
583 | prop->info->parse ? qdev_set_legacy_property : prop->info->set, | |
57c9fafe AL |
584 | NULL, |
585 | prop, errp); | |
a5296ca9 AL |
586 | |
587 | g_free(type); | |
ca2cc788 PB |
588 | g_free(name); |
589 | } | |
590 | ||
591 | /** | |
592 | * @qdev_property_add_static - add a @Property to a device. | |
593 | * | |
594 | * Static properties access data in a struct. The actual type of the | |
595 | * property and the field depends on the property type. | |
596 | */ | |
597 | void qdev_property_add_static(DeviceState *dev, Property *prop, | |
598 | Error **errp) | |
599 | { | |
fdae245f PB |
600 | Error *local_err = NULL; |
601 | Object *obj = OBJECT(dev); | |
602 | ||
d822979b PB |
603 | /* |
604 | * TODO qdev_prop_ptr does not have getters or setters. It must | |
605 | * go now that it can be replaced with links. The test should be | |
606 | * removed along with it: all static properties are read/write. | |
607 | */ | |
608 | if (!prop->info->get && !prop->info->set) { | |
609 | return; | |
610 | } | |
611 | ||
fdae245f | 612 | object_property_add(obj, prop->name, prop->info->name, |
57c9fafe | 613 | prop->info->get, prop->info->set, |
dd0ba250 | 614 | prop->info->release, |
fdae245f PB |
615 | prop, &local_err); |
616 | ||
617 | if (local_err) { | |
618 | error_propagate(errp, local_err); | |
619 | return; | |
620 | } | |
621 | if (prop->qtype == QTYPE_NONE) { | |
622 | return; | |
623 | } | |
624 | ||
625 | if (prop->qtype == QTYPE_QBOOL) { | |
626 | object_property_set_bool(obj, prop->defval, prop->name, &local_err); | |
627 | } else if (prop->info->enum_table) { | |
628 | object_property_set_str(obj, prop->info->enum_table[prop->defval], | |
629 | prop->name, &local_err); | |
630 | } else if (prop->qtype == QTYPE_QINT) { | |
631 | object_property_set_int(obj, prop->defval, prop->name, &local_err); | |
632 | } | |
633 | assert_no_error(local_err); | |
6a146eba | 634 | } |
1de81d28 | 635 | |
9674bfe4 AL |
636 | static void device_initfn(Object *obj) |
637 | { | |
638 | DeviceState *dev = DEVICE(obj); | |
bce54474 | 639 | ObjectClass *class; |
9674bfe4 AL |
640 | Property *prop; |
641 | ||
642 | if (qdev_hotplug) { | |
643 | dev->hotplugged = 1; | |
644 | qdev_hot_added = true; | |
645 | } | |
646 | ||
647 | dev->instance_id_alias = -1; | |
9674bfe4 AL |
648 | dev->state = DEV_STATE_CREATED; |
649 | ||
bce54474 PB |
650 | class = object_get_class(OBJECT(dev)); |
651 | do { | |
652 | for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { | |
653 | qdev_property_add_legacy(dev, prop, NULL); | |
654 | qdev_property_add_static(dev, prop, NULL); | |
655 | } | |
bce54474 PB |
656 | class = object_class_get_parent(class); |
657 | } while (class != object_class_by_name(TYPE_DEVICE)); | |
4b3582b0 | 658 | qdev_prop_set_globals(dev); |
9674bfe4 AL |
659 | } |
660 | ||
60adba37 AL |
661 | /* Unlink device from bus and free the structure. */ |
662 | static void device_finalize(Object *obj) | |
663 | { | |
664 | DeviceState *dev = DEVICE(obj); | |
665 | BusState *bus; | |
60adba37 AL |
666 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
667 | ||
668 | if (dev->state == DEV_STATE_INITIALIZED) { | |
669 | while (dev->num_child_bus) { | |
670 | bus = QLIST_FIRST(&dev->child_bus); | |
671 | qbus_free(bus); | |
672 | } | |
673 | if (qdev_get_vmsd(dev)) { | |
674 | vmstate_unregister(dev, qdev_get_vmsd(dev), dev); | |
675 | } | |
676 | if (dc->exit) { | |
677 | dc->exit(dev); | |
678 | } | |
679 | if (dev->opts) { | |
680 | qemu_opts_del(dev->opts); | |
681 | } | |
682 | } | |
683 | QTAILQ_REMOVE(&dev->parent_bus->children, dev, sibling); | |
60adba37 AL |
684 | } |
685 | ||
bce54474 PB |
686 | static void device_class_base_init(ObjectClass *class, void *data) |
687 | { | |
688 | DeviceClass *klass = DEVICE_CLASS(class); | |
689 | ||
690 | /* We explicitly look up properties in the superclasses, | |
691 | * so do not propagate them to the subclasses. | |
692 | */ | |
693 | klass->props = NULL; | |
694 | } | |
695 | ||
94afdadc AL |
696 | void device_reset(DeviceState *dev) |
697 | { | |
698 | DeviceClass *klass = DEVICE_GET_CLASS(dev); | |
699 | ||
700 | if (klass->reset) { | |
701 | klass->reset(dev); | |
702 | } | |
703 | } | |
704 | ||
f05f6b4a PB |
705 | Object *qdev_get_machine(void) |
706 | { | |
707 | static Object *dev; | |
708 | ||
709 | if (dev == NULL) { | |
dfe47e70 | 710 | dev = container_get(object_get_root(), "/machine"); |
f05f6b4a PB |
711 | } |
712 | ||
713 | return dev; | |
714 | } | |
715 | ||
32fea402 AL |
716 | static TypeInfo device_type_info = { |
717 | .name = TYPE_DEVICE, | |
718 | .parent = TYPE_OBJECT, | |
719 | .instance_size = sizeof(DeviceState), | |
9674bfe4 | 720 | .instance_init = device_initfn, |
60adba37 | 721 | .instance_finalize = device_finalize, |
bce54474 | 722 | .class_base_init = device_class_base_init, |
32fea402 AL |
723 | .abstract = true, |
724 | .class_size = sizeof(DeviceClass), | |
725 | }; | |
726 | ||
0d936928 AL |
727 | static const TypeInfo bus_info = { |
728 | .name = TYPE_BUS, | |
729 | .parent = TYPE_OBJECT, | |
730 | .instance_size = sizeof(BusState), | |
731 | .abstract = true, | |
732 | .class_size = sizeof(BusClass), | |
733 | }; | |
734 | ||
83f7d43a | 735 | static void qdev_register_types(void) |
32fea402 | 736 | { |
0d936928 | 737 | type_register_static(&bus_info); |
32fea402 AL |
738 | type_register_static(&device_type_info); |
739 | } | |
740 | ||
83f7d43a | 741 | type_init(qdev_register_types) |