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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 | ||
28 | #include "qdev.h" | |
9c17d615 | 29 | #include "sysemu/sysemu.h" |
7b1b5d19 PB |
30 | #include "qapi/error.h" |
31 | #include "qapi/visitor.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 | |
4be9f0d1 AL |
37 | const VMStateDescription *qdev_get_vmsd(DeviceState *dev) |
38 | { | |
6e008585 AL |
39 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
40 | return dc->vmsd; | |
4be9f0d1 AL |
41 | } |
42 | ||
4be9f0d1 AL |
43 | const char *qdev_fw_name(DeviceState *dev) |
44 | { | |
6e008585 | 45 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
4be9f0d1 | 46 | |
6e008585 AL |
47 | if (dc->fw_name) { |
48 | return dc->fw_name; | |
4be9f0d1 AL |
49 | } |
50 | ||
51 | return object_get_typename(OBJECT(dev)); | |
52 | } | |
53 | ||
ca2cc788 PB |
54 | static void qdev_property_add_legacy(DeviceState *dev, Property *prop, |
55 | Error **errp); | |
56 | ||
0866aca1 | 57 | static void bus_remove_child(BusState *bus, DeviceState *child) |
0c17542d | 58 | { |
0866aca1 AL |
59 | BusChild *kid; |
60 | ||
61 | QTAILQ_FOREACH(kid, &bus->children, sibling) { | |
62 | if (kid->child == child) { | |
63 | char name[32]; | |
64 | ||
65 | snprintf(name, sizeof(name), "child[%d]", kid->index); | |
66 | QTAILQ_REMOVE(&bus->children, kid, sibling); | |
67 | object_property_del(OBJECT(bus), name, NULL); | |
68 | g_free(kid); | |
69 | return; | |
70 | } | |
71 | } | |
72 | } | |
73 | ||
74 | static void bus_add_child(BusState *bus, DeviceState *child) | |
75 | { | |
76 | char name[32]; | |
77 | BusChild *kid = g_malloc0(sizeof(*kid)); | |
0c17542d | 78 | |
0c17542d MA |
79 | if (qdev_hotplug) { |
80 | assert(bus->allow_hotplug); | |
0c17542d | 81 | } |
a5296ca9 | 82 | |
0866aca1 AL |
83 | kid->index = bus->max_index++; |
84 | kid->child = child; | |
a5296ca9 | 85 | |
0866aca1 AL |
86 | QTAILQ_INSERT_HEAD(&bus->children, kid, sibling); |
87 | ||
88 | snprintf(name, sizeof(name), "child[%d]", kid->index); | |
89 | object_property_add_link(OBJECT(bus), name, | |
90 | object_get_typename(OBJECT(child)), | |
91 | (Object **)&kid->child, | |
92 | NULL); | |
93 | } | |
94 | ||
95 | void qdev_set_parent_bus(DeviceState *dev, BusState *bus) | |
96 | { | |
9fbe6127 | 97 | dev->parent_bus = bus; |
0866aca1 | 98 | bus_add_child(bus, dev); |
0c17542d MA |
99 | } |
100 | ||
aae9460e PB |
101 | /* Create a new device. This only initializes the device state structure |
102 | and allows properties to be set. qdev_init should be called to | |
103 | initialize the actual device emulation. */ | |
02e2da45 | 104 | DeviceState *qdev_create(BusState *bus, const char *name) |
0bcdeda7 BS |
105 | { |
106 | DeviceState *dev; | |
107 | ||
108 | dev = qdev_try_create(bus, name); | |
109 | if (!dev) { | |
e92714c7 | 110 | if (bus) { |
23e3fbec EH |
111 | error_report("Unknown device '%s' for bus '%s'\n", name, |
112 | object_get_typename(OBJECT(bus))); | |
113 | abort(); | |
e92714c7 | 114 | } else { |
23e3fbec EH |
115 | error_report("Unknown device '%s' for default sysbus\n", name); |
116 | abort(); | |
e92714c7 | 117 | } |
0bcdeda7 BS |
118 | } |
119 | ||
120 | return dev; | |
121 | } | |
122 | ||
da57febf | 123 | DeviceState *qdev_try_create(BusState *bus, const char *type) |
aae9460e | 124 | { |
9fbe6127 AL |
125 | DeviceState *dev; |
126 | ||
da57febf | 127 | if (object_class_by_name(type) == NULL) { |
4ed658ca AF |
128 | return NULL; |
129 | } | |
da57febf | 130 | dev = DEVICE(object_new(type)); |
9fbe6127 AL |
131 | if (!dev) { |
132 | return NULL; | |
133 | } | |
134 | ||
10c4c98a | 135 | if (!bus) { |
68694897 | 136 | bus = sysbus_get_default(); |
10c4c98a GH |
137 | } |
138 | ||
9fbe6127 | 139 | qdev_set_parent_bus(dev, bus); |
9fbe6127 AL |
140 | |
141 | return dev; | |
aae9460e PB |
142 | } |
143 | ||
144 | /* Initialize a device. Device properties should be set before calling | |
145 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
146 | calling this function. |
147 | On failure, destroy the device and return negative value. | |
148 | Return 0 on success. */ | |
81a322d4 | 149 | int qdev_init(DeviceState *dev) |
aae9460e | 150 | { |
6e008585 | 151 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
959f733a GH |
152 | int rc; |
153 | ||
131ec1bd | 154 | assert(dev->state == DEV_STATE_CREATED); |
6e008585 | 155 | |
d307af79 | 156 | rc = dc->init(dev); |
18cfeb52 MA |
157 | if (rc < 0) { |
158 | qdev_free(dev); | |
959f733a | 159 | return rc; |
18cfeb52 | 160 | } |
da57febf PB |
161 | |
162 | if (!OBJECT(dev)->parent) { | |
163 | static int unattached_count = 0; | |
164 | gchar *name = g_strdup_printf("device[%d]", unattached_count++); | |
165 | ||
dfe47e70 AF |
166 | object_property_add_child(container_get(qdev_get_machine(), |
167 | "/unattached"), | |
168 | name, OBJECT(dev), NULL); | |
da57febf PB |
169 | g_free(name); |
170 | } | |
171 | ||
6e008585 AL |
172 | if (qdev_get_vmsd(dev)) { |
173 | vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, | |
4d2ffa08 JK |
174 | dev->instance_id_alias, |
175 | dev->alias_required_for_version); | |
176 | } | |
131ec1bd | 177 | dev->state = DEV_STATE_INITIALIZED; |
94afdadc AL |
178 | if (dev->hotplugged) { |
179 | device_reset(dev); | |
5ab28c83 | 180 | } |
959f733a | 181 | return 0; |
02e2da45 PB |
182 | } |
183 | ||
4d2ffa08 JK |
184 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
185 | int required_for_version) | |
186 | { | |
187 | assert(dev->state == DEV_STATE_CREATED); | |
188 | dev->instance_id_alias = alias_id; | |
189 | dev->alias_required_for_version = required_for_version; | |
190 | } | |
191 | ||
56f9107e | 192 | void qdev_unplug(DeviceState *dev, Error **errp) |
3418bd25 | 193 | { |
6e008585 AL |
194 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
195 | ||
3418bd25 | 196 | if (!dev->parent_bus->allow_hotplug) { |
56f9107e LC |
197 | error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
198 | return; | |
3418bd25 | 199 | } |
6e008585 | 200 | assert(dc->unplug != NULL); |
593831de | 201 | |
0ac8ef71 AW |
202 | qdev_hot_removed = true; |
203 | ||
56f9107e LC |
204 | if (dc->unplug(dev) < 0) { |
205 | error_set(errp, QERR_UNDEFINED_ERROR); | |
206 | return; | |
207 | } | |
3418bd25 GH |
208 | } |
209 | ||
ec990eb6 AL |
210 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
211 | { | |
94afdadc | 212 | device_reset(dev); |
ec990eb6 AL |
213 | |
214 | return 0; | |
215 | } | |
216 | ||
b4694b7c IY |
217 | static int qbus_reset_one(BusState *bus, void *opaque) |
218 | { | |
0d936928 AL |
219 | BusClass *bc = BUS_GET_CLASS(bus); |
220 | if (bc->reset) { | |
221 | return bc->reset(bus); | |
b4694b7c IY |
222 | } |
223 | return 0; | |
224 | } | |
225 | ||
5af0a04b IY |
226 | void qdev_reset_all(DeviceState *dev) |
227 | { | |
228 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
229 | } | |
230 | ||
d0508c36 PB |
231 | void qbus_reset_all(BusState *bus) |
232 | { | |
233 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); | |
234 | } | |
235 | ||
80376c3f IY |
236 | void qbus_reset_all_fn(void *opaque) |
237 | { | |
238 | BusState *bus = opaque; | |
d0508c36 | 239 | qbus_reset_all(bus); |
80376c3f IY |
240 | } |
241 | ||
3418bd25 GH |
242 | /* can be used as ->unplug() callback for the simple cases */ |
243 | int qdev_simple_unplug_cb(DeviceState *dev) | |
244 | { | |
245 | /* just zap it */ | |
246 | qdev_free(dev); | |
247 | return 0; | |
248 | } | |
249 | ||
3b29a101 MT |
250 | |
251 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
252 | returning an error value. This is okay during machine creation. |
253 | Don't use for hotplug, because there callers need to recover from | |
254 | failure. Exception: if you know the device's init() callback can't | |
255 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
256 | usable even then. But relying on the device implementation that | |
257 | way is somewhat unclean, and best avoided. */ | |
258 | void qdev_init_nofail(DeviceState *dev) | |
259 | { | |
7de3abe5 AL |
260 | const char *typename = object_get_typename(OBJECT(dev)); |
261 | ||
bd6c9a61 | 262 | if (qdev_init(dev) < 0) { |
7de3abe5 | 263 | error_report("Initialization of device %s failed", typename); |
bd6c9a61 MA |
264 | exit(1); |
265 | } | |
e23a1b33 MA |
266 | } |
267 | ||
02e2da45 PB |
268 | /* Unlink device from bus and free the structure. */ |
269 | void qdev_free(DeviceState *dev) | |
270 | { | |
32fea402 | 271 | object_delete(OBJECT(dev)); |
aae9460e PB |
272 | } |
273 | ||
3418bd25 GH |
274 | void qdev_machine_creation_done(void) |
275 | { | |
276 | /* | |
277 | * ok, initial machine setup is done, starting from now we can | |
278 | * only create hotpluggable devices | |
279 | */ | |
280 | qdev_hotplug = 1; | |
281 | } | |
282 | ||
0ac8ef71 AW |
283 | bool qdev_machine_modified(void) |
284 | { | |
285 | return qdev_hot_added || qdev_hot_removed; | |
286 | } | |
287 | ||
02e2da45 | 288 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 289 | { |
02e2da45 | 290 | return dev->parent_bus; |
aae9460e PB |
291 | } |
292 | ||
aae9460e PB |
293 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
294 | { | |
1e5b31e6 PC |
295 | dev->gpio_in = qemu_extend_irqs(dev->gpio_in, dev->num_gpio_in, handler, |
296 | dev, n); | |
297 | dev->num_gpio_in += n; | |
aae9460e PB |
298 | } |
299 | ||
300 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
301 | { | |
302 | assert(dev->num_gpio_out == 0); | |
303 | dev->num_gpio_out = n; | |
304 | dev->gpio_out = pins; | |
305 | } | |
306 | ||
307 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
308 | { | |
309 | assert(n >= 0 && n < dev->num_gpio_in); | |
310 | return dev->gpio_in[n]; | |
311 | } | |
312 | ||
313 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
314 | { | |
315 | assert(n >= 0 && n < dev->num_gpio_out); | |
316 | dev->gpio_out[n] = pin; | |
317 | } | |
318 | ||
02e2da45 | 319 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 320 | { |
02e2da45 | 321 | BusState *bus; |
4d6ae674 | 322 | |
72cf2d4f | 323 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 324 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 325 | return bus; |
4d6ae674 PB |
326 | } |
327 | } | |
328 | return NULL; | |
329 | } | |
330 | ||
81699d8a AL |
331 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
332 | qbus_walkerfn *busfn, void *opaque) | |
333 | { | |
0866aca1 | 334 | BusChild *kid; |
81699d8a AL |
335 | int err; |
336 | ||
337 | if (busfn) { | |
338 | err = busfn(bus, opaque); | |
339 | if (err) { | |
340 | return err; | |
341 | } | |
342 | } | |
343 | ||
0866aca1 AL |
344 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
345 | err = qdev_walk_children(kid->child, devfn, busfn, opaque); | |
81699d8a AL |
346 | if (err < 0) { |
347 | return err; | |
348 | } | |
349 | } | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
355 | qbus_walkerfn *busfn, void *opaque) | |
356 | { | |
357 | BusState *bus; | |
358 | int err; | |
359 | ||
360 | if (devfn) { | |
361 | err = devfn(dev, opaque); | |
362 | if (err) { | |
363 | return err; | |
364 | } | |
365 | } | |
366 | ||
367 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
368 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
369 | if (err < 0) { | |
370 | return err; | |
371 | } | |
372 | } | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
a2ee6b4f | 377 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 | 378 | { |
0866aca1 AL |
379 | BusChild *kid; |
380 | DeviceState *ret; | |
3418bd25 GH |
381 | BusState *child; |
382 | ||
0866aca1 AL |
383 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
384 | DeviceState *dev = kid->child; | |
385 | ||
386 | if (dev->id && strcmp(dev->id, id) == 0) { | |
3418bd25 | 387 | return dev; |
0866aca1 AL |
388 | } |
389 | ||
3418bd25 GH |
390 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
391 | ret = qdev_find_recursive(child, id); | |
392 | if (ret) { | |
393 | return ret; | |
394 | } | |
395 | } | |
396 | } | |
397 | return NULL; | |
398 | } | |
399 | ||
ac7d1ba6 | 400 | static void qbus_realize(BusState *bus) |
02e2da45 | 401 | { |
ac7d1ba6 | 402 | const char *typename = object_get_typename(OBJECT(bus)); |
d271de9f GH |
403 | char *buf; |
404 | int i,len; | |
02e2da45 | 405 | |
ac7d1ba6 | 406 | if (bus->name) { |
d271de9f | 407 | /* use supplied name */ |
ac7d1ba6 | 408 | } else if (bus->parent && bus->parent->id) { |
d271de9f | 409 | /* parent device has id -> use it for bus name */ |
ac7d1ba6 | 410 | len = strlen(bus->parent->id) + 16; |
7267c094 | 411 | buf = g_malloc(len); |
ac7d1ba6 | 412 | snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus); |
d271de9f GH |
413 | bus->name = buf; |
414 | } else { | |
415 | /* no id -> use lowercase bus type for bus name */ | |
0d936928 | 416 | len = strlen(typename) + 16; |
7267c094 | 417 | buf = g_malloc(len); |
0d936928 | 418 | len = snprintf(buf, len, "%s.%d", typename, |
ac7d1ba6 | 419 | bus->parent ? bus->parent->num_child_bus : 0); |
d271de9f | 420 | for (i = 0; i < len; i++) |
bb87ece5 | 421 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
422 | bus->name = buf; |
423 | } | |
424 | ||
ac7d1ba6 AL |
425 | if (bus->parent) { |
426 | QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); | |
427 | bus->parent->num_child_bus++; | |
428 | object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL); | |
8185d216 | 429 | } else if (bus != sysbus_get_default()) { |
80376c3f IY |
430 | /* TODO: once all bus devices are qdevified, |
431 | only reset handler for main_system_bus should be registered here. */ | |
432 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 433 | } |
cd739fb6 GH |
434 | } |
435 | ||
0d936928 AL |
436 | void qbus_create_inplace(BusState *bus, const char *typename, |
437 | DeviceState *parent, const char *name) | |
cd739fb6 | 438 | { |
0d936928 | 439 | object_initialize(bus, typename); |
cd739fb6 | 440 | |
ac7d1ba6 AL |
441 | bus->parent = parent; |
442 | bus->name = name ? g_strdup(name) : NULL; | |
443 | qbus_realize(bus); | |
02e2da45 | 444 | } |
cae4956e | 445 | |
0d936928 | 446 | BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
2da8bb92 | 447 | { |
cd739fb6 GH |
448 | BusState *bus; |
449 | ||
0d936928 | 450 | bus = BUS(object_new(typename)); |
ac7d1ba6 AL |
451 | |
452 | bus->parent = parent; | |
453 | bus->name = name ? g_strdup(name) : NULL; | |
454 | qbus_realize(bus); | |
455 | ||
02e2da45 | 456 | return bus; |
2da8bb92 IY |
457 | } |
458 | ||
131ec1bd GH |
459 | void qbus_free(BusState *bus) |
460 | { | |
64b625f4 | 461 | object_delete(OBJECT(bus)); |
0d936928 AL |
462 | } |
463 | ||
464 | static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) | |
465 | { | |
466 | BusClass *bc = BUS_GET_CLASS(bus); | |
467 | ||
468 | if (bc->get_fw_dev_path) { | |
469 | return bc->get_fw_dev_path(dev); | |
131ec1bd | 470 | } |
0d936928 AL |
471 | |
472 | return NULL; | |
131ec1bd GH |
473 | } |
474 | ||
1ca4d09a GN |
475 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
476 | { | |
477 | int l = 0; | |
478 | ||
479 | if (dev && dev->parent_bus) { | |
480 | char *d; | |
481 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
0d936928 AL |
482 | d = bus_get_fw_dev_path(dev->parent_bus, dev); |
483 | if (d) { | |
1ca4d09a | 484 | l += snprintf(p + l, size - l, "%s", d); |
7267c094 | 485 | g_free(d); |
1ca4d09a | 486 | } else { |
f79f2bfc | 487 | l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev))); |
1ca4d09a GN |
488 | } |
489 | } | |
490 | l += snprintf(p + l , size - l, "/"); | |
491 | ||
492 | return l; | |
493 | } | |
494 | ||
495 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
496 | { | |
497 | char path[128]; | |
498 | int l; | |
499 | ||
500 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
501 | ||
502 | path[l-1] = '\0'; | |
503 | ||
a5cf8262 | 504 | return g_strdup(path); |
1ca4d09a | 505 | } |
85ed303b | 506 | |
09e5ab63 | 507 | char *qdev_get_dev_path(DeviceState *dev) |
85ed303b | 508 | { |
0d936928 | 509 | BusClass *bc; |
09e5ab63 AL |
510 | |
511 | if (!dev || !dev->parent_bus) { | |
512 | return NULL; | |
513 | } | |
514 | ||
0d936928 AL |
515 | bc = BUS_GET_CLASS(dev->parent_bus); |
516 | if (bc->get_dev_path) { | |
517 | return bc->get_dev_path(dev); | |
09e5ab63 AL |
518 | } |
519 | ||
520 | return NULL; | |
44677ded | 521 | } |
a5296ca9 AL |
522 | |
523 | /** | |
524 | * Legacy property handling | |
525 | */ | |
526 | ||
57c9fafe | 527 | static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
528 | const char *name, Error **errp) |
529 | { | |
57c9fafe | 530 | DeviceState *dev = DEVICE(obj); |
a5296ca9 AL |
531 | Property *prop = opaque; |
532 | ||
e3cb6ba6 PB |
533 | char buffer[1024]; |
534 | char *ptr = buffer; | |
a5296ca9 | 535 | |
e3cb6ba6 PB |
536 | prop->info->print(dev, prop, buffer, sizeof(buffer)); |
537 | visit_type_str(v, &ptr, name, errp); | |
a5296ca9 AL |
538 | } |
539 | ||
57c9fafe | 540 | static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
541 | const char *name, Error **errp) |
542 | { | |
57c9fafe | 543 | DeviceState *dev = DEVICE(obj); |
a5296ca9 | 544 | Property *prop = opaque; |
e3cb6ba6 PB |
545 | Error *local_err = NULL; |
546 | char *ptr = NULL; | |
547 | int ret; | |
a5296ca9 AL |
548 | |
549 | if (dev->state != DEV_STATE_CREATED) { | |
550 | error_set(errp, QERR_PERMISSION_DENIED); | |
551 | return; | |
552 | } | |
553 | ||
e3cb6ba6 PB |
554 | visit_type_str(v, &ptr, name, &local_err); |
555 | if (local_err) { | |
556 | error_propagate(errp, local_err); | |
557 | return; | |
558 | } | |
a5296ca9 | 559 | |
e3cb6ba6 | 560 | ret = prop->info->parse(dev, prop, ptr); |
7db4c4e8 | 561 | error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
e3cb6ba6 | 562 | g_free(ptr); |
a5296ca9 AL |
563 | } |
564 | ||
565 | /** | |
566 | * @qdev_add_legacy_property - adds a legacy property | |
567 | * | |
568 | * Do not use this is new code! Properties added through this interface will | |
ca2cc788 | 569 | * be given names and types in the "legacy" namespace. |
a5296ca9 | 570 | * |
68ee3569 PB |
571 | * Legacy properties are string versions of other OOM properties. The format |
572 | * of the string depends on the property type. | |
a5296ca9 AL |
573 | */ |
574 | void qdev_property_add_legacy(DeviceState *dev, Property *prop, | |
575 | Error **errp) | |
576 | { | |
ca2cc788 | 577 | gchar *name, *type; |
a5296ca9 | 578 | |
f3be016d AL |
579 | /* Register pointer properties as legacy properties */ |
580 | if (!prop->info->print && !prop->info->parse && | |
581 | (prop->info->set || prop->info->get)) { | |
68ee3569 PB |
582 | return; |
583 | } | |
f3be016d | 584 | |
ca2cc788 | 585 | name = g_strdup_printf("legacy-%s", prop->name); |
cafe5bdb PB |
586 | type = g_strdup_printf("legacy<%s>", |
587 | prop->info->legacy_name ?: prop->info->name); | |
a5296ca9 | 588 | |
57c9fafe | 589 | object_property_add(OBJECT(dev), name, type, |
68ee3569 PB |
590 | prop->info->print ? qdev_get_legacy_property : prop->info->get, |
591 | prop->info->parse ? qdev_set_legacy_property : prop->info->set, | |
57c9fafe AL |
592 | NULL, |
593 | prop, errp); | |
a5296ca9 AL |
594 | |
595 | g_free(type); | |
ca2cc788 PB |
596 | g_free(name); |
597 | } | |
598 | ||
599 | /** | |
600 | * @qdev_property_add_static - add a @Property to a device. | |
601 | * | |
602 | * Static properties access data in a struct. The actual type of the | |
603 | * property and the field depends on the property type. | |
604 | */ | |
605 | void qdev_property_add_static(DeviceState *dev, Property *prop, | |
606 | Error **errp) | |
607 | { | |
fdae245f PB |
608 | Error *local_err = NULL; |
609 | Object *obj = OBJECT(dev); | |
610 | ||
d822979b PB |
611 | /* |
612 | * TODO qdev_prop_ptr does not have getters or setters. It must | |
613 | * go now that it can be replaced with links. The test should be | |
614 | * removed along with it: all static properties are read/write. | |
615 | */ | |
616 | if (!prop->info->get && !prop->info->set) { | |
617 | return; | |
618 | } | |
619 | ||
fdae245f | 620 | object_property_add(obj, prop->name, prop->info->name, |
57c9fafe | 621 | prop->info->get, prop->info->set, |
dd0ba250 | 622 | prop->info->release, |
fdae245f PB |
623 | prop, &local_err); |
624 | ||
625 | if (local_err) { | |
626 | error_propagate(errp, local_err); | |
627 | return; | |
628 | } | |
629 | if (prop->qtype == QTYPE_NONE) { | |
630 | return; | |
631 | } | |
632 | ||
633 | if (prop->qtype == QTYPE_QBOOL) { | |
634 | object_property_set_bool(obj, prop->defval, prop->name, &local_err); | |
635 | } else if (prop->info->enum_table) { | |
636 | object_property_set_str(obj, prop->info->enum_table[prop->defval], | |
637 | prop->name, &local_err); | |
638 | } else if (prop->qtype == QTYPE_QINT) { | |
639 | object_property_set_int(obj, prop->defval, prop->name, &local_err); | |
640 | } | |
641 | assert_no_error(local_err); | |
6a146eba | 642 | } |
1de81d28 | 643 | |
9674bfe4 AL |
644 | static void device_initfn(Object *obj) |
645 | { | |
646 | DeviceState *dev = DEVICE(obj); | |
bce54474 | 647 | ObjectClass *class; |
9674bfe4 AL |
648 | Property *prop; |
649 | ||
650 | if (qdev_hotplug) { | |
651 | dev->hotplugged = 1; | |
652 | qdev_hot_added = true; | |
653 | } | |
654 | ||
655 | dev->instance_id_alias = -1; | |
9674bfe4 AL |
656 | dev->state = DEV_STATE_CREATED; |
657 | ||
bce54474 PB |
658 | class = object_get_class(OBJECT(dev)); |
659 | do { | |
660 | for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { | |
661 | qdev_property_add_legacy(dev, prop, NULL); | |
662 | qdev_property_add_static(dev, prop, NULL); | |
663 | } | |
bce54474 PB |
664 | class = object_class_get_parent(class); |
665 | } while (class != object_class_by_name(TYPE_DEVICE)); | |
4b3582b0 | 666 | qdev_prop_set_globals(dev); |
9674bfe4 | 667 | |
f968fc68 AL |
668 | object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS, |
669 | (Object **)&dev->parent_bus, NULL); | |
9674bfe4 AL |
670 | } |
671 | ||
60adba37 AL |
672 | /* Unlink device from bus and free the structure. */ |
673 | static void device_finalize(Object *obj) | |
674 | { | |
675 | DeviceState *dev = DEVICE(obj); | |
676 | BusState *bus; | |
60adba37 AL |
677 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
678 | ||
679 | if (dev->state == DEV_STATE_INITIALIZED) { | |
680 | while (dev->num_child_bus) { | |
681 | bus = QLIST_FIRST(&dev->child_bus); | |
682 | qbus_free(bus); | |
683 | } | |
684 | if (qdev_get_vmsd(dev)) { | |
685 | vmstate_unregister(dev, qdev_get_vmsd(dev), dev); | |
686 | } | |
687 | if (dc->exit) { | |
688 | dc->exit(dev); | |
689 | } | |
690 | if (dev->opts) { | |
691 | qemu_opts_del(dev->opts); | |
692 | } | |
693 | } | |
60adba37 AL |
694 | } |
695 | ||
bce54474 PB |
696 | static void device_class_base_init(ObjectClass *class, void *data) |
697 | { | |
698 | DeviceClass *klass = DEVICE_CLASS(class); | |
699 | ||
700 | /* We explicitly look up properties in the superclasses, | |
701 | * so do not propagate them to the subclasses. | |
702 | */ | |
703 | klass->props = NULL; | |
60adba37 AL |
704 | } |
705 | ||
5d5b24d0 | 706 | static void device_unparent(Object *obj) |
667d22d1 PB |
707 | { |
708 | DeviceState *dev = DEVICE(obj); | |
709 | ||
5d5b24d0 AF |
710 | if (dev->parent_bus != NULL) { |
711 | bus_remove_child(dev->parent_bus, dev); | |
712 | } | |
667d22d1 PB |
713 | } |
714 | ||
715 | static void device_class_init(ObjectClass *class, void *data) | |
716 | { | |
5d5b24d0 | 717 | class->unparent = device_unparent; |
667d22d1 PB |
718 | } |
719 | ||
94afdadc AL |
720 | void device_reset(DeviceState *dev) |
721 | { | |
722 | DeviceClass *klass = DEVICE_GET_CLASS(dev); | |
723 | ||
724 | if (klass->reset) { | |
725 | klass->reset(dev); | |
726 | } | |
727 | } | |
728 | ||
f05f6b4a PB |
729 | Object *qdev_get_machine(void) |
730 | { | |
731 | static Object *dev; | |
732 | ||
733 | if (dev == NULL) { | |
dfe47e70 | 734 | dev = container_get(object_get_root(), "/machine"); |
f05f6b4a PB |
735 | } |
736 | ||
737 | return dev; | |
738 | } | |
739 | ||
8c43a6f0 | 740 | static const TypeInfo device_type_info = { |
32fea402 AL |
741 | .name = TYPE_DEVICE, |
742 | .parent = TYPE_OBJECT, | |
743 | .instance_size = sizeof(DeviceState), | |
9674bfe4 | 744 | .instance_init = device_initfn, |
60adba37 | 745 | .instance_finalize = device_finalize, |
bce54474 | 746 | .class_base_init = device_class_base_init, |
667d22d1 | 747 | .class_init = device_class_init, |
32fea402 AL |
748 | .abstract = true, |
749 | .class_size = sizeof(DeviceClass), | |
750 | }; | |
751 | ||
ac7d1ba6 AL |
752 | static void qbus_initfn(Object *obj) |
753 | { | |
754 | BusState *bus = BUS(obj); | |
755 | ||
756 | QTAILQ_INIT(&bus->children); | |
757 | } | |
758 | ||
759 | static void qbus_finalize(Object *obj) | |
760 | { | |
761 | BusState *bus = BUS(obj); | |
762 | BusChild *kid; | |
763 | ||
764 | while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { | |
765 | DeviceState *dev = kid->child; | |
766 | qdev_free(dev); | |
767 | } | |
768 | if (bus->parent) { | |
769 | QLIST_REMOVE(bus, sibling); | |
770 | bus->parent->num_child_bus--; | |
771 | } else { | |
772 | assert(bus != sysbus_get_default()); /* main_system_bus is never freed */ | |
773 | qemu_unregister_reset(qbus_reset_all_fn, bus); | |
774 | } | |
775 | g_free((char *)bus->name); | |
776 | } | |
777 | ||
0d936928 AL |
778 | static const TypeInfo bus_info = { |
779 | .name = TYPE_BUS, | |
780 | .parent = TYPE_OBJECT, | |
781 | .instance_size = sizeof(BusState), | |
782 | .abstract = true, | |
783 | .class_size = sizeof(BusClass), | |
ac7d1ba6 AL |
784 | .instance_init = qbus_initfn, |
785 | .instance_finalize = qbus_finalize, | |
0d936928 AL |
786 | }; |
787 | ||
83f7d43a | 788 | static void qdev_register_types(void) |
32fea402 | 789 | { |
0d936928 | 790 | type_register_static(&bus_info); |
32fea402 AL |
791 | type_register_static(&device_type_info); |
792 | } | |
793 | ||
83f7d43a | 794 | type_init(qdev_register_types) |