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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 | |
cdaed7c7 | 37 | /* This is a nasty hack to allow passing a NULL bus to qdev_create. */ |
b9aaf7f8 | 38 | static BusState *main_system_bus; |
2da8bb92 | 39 | static void main_system_bus_create(void); |
4d6ae674 | 40 | |
aae9460e | 41 | /* Register a new device type. */ |
4be9f0d1 AL |
42 | const VMStateDescription *qdev_get_vmsd(DeviceState *dev) |
43 | { | |
6e008585 AL |
44 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
45 | return dc->vmsd; | |
4be9f0d1 AL |
46 | } |
47 | ||
4be9f0d1 AL |
48 | const char *qdev_fw_name(DeviceState *dev) |
49 | { | |
6e008585 | 50 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
4be9f0d1 | 51 | |
6e008585 AL |
52 | if (dc->fw_name) { |
53 | return dc->fw_name; | |
4be9f0d1 AL |
54 | } |
55 | ||
56 | return object_get_typename(OBJECT(dev)); | |
57 | } | |
58 | ||
a369da5f BS |
59 | bool qdev_exists(const char *name) |
60 | { | |
212ad111 | 61 | return !!object_class_by_name(name); |
a369da5f | 62 | } |
40021f08 | 63 | |
ca2cc788 PB |
64 | static void qdev_property_add_legacy(DeviceState *dev, Property *prop, |
65 | Error **errp); | |
66 | ||
9fbe6127 | 67 | void qdev_set_parent_bus(DeviceState *dev, BusState *bus) |
0c17542d | 68 | { |
0c17542d MA |
69 | if (qdev_hotplug) { |
70 | assert(bus->allow_hotplug); | |
0c17542d | 71 | } |
a5296ca9 | 72 | |
9fbe6127 | 73 | dev->parent_bus = bus; |
9674bfe4 | 74 | QTAILQ_INSERT_HEAD(&bus->children, dev, sibling); |
0c17542d MA |
75 | } |
76 | ||
aae9460e PB |
77 | /* Create a new device. This only initializes the device state structure |
78 | and allows properties to be set. qdev_init should be called to | |
79 | initialize the actual device emulation. */ | |
02e2da45 | 80 | DeviceState *qdev_create(BusState *bus, const char *name) |
0bcdeda7 BS |
81 | { |
82 | DeviceState *dev; | |
83 | ||
84 | dev = qdev_try_create(bus, name); | |
85 | if (!dev) { | |
e92714c7 PM |
86 | if (bus) { |
87 | hw_error("Unknown device '%s' for bus '%s'\n", name, | |
88 | bus->info->name); | |
89 | } else { | |
90 | hw_error("Unknown device '%s' for default sysbus\n", name); | |
91 | } | |
0bcdeda7 BS |
92 | } |
93 | ||
94 | return dev; | |
95 | } | |
96 | ||
da57febf | 97 | DeviceState *qdev_try_create(BusState *bus, const char *type) |
aae9460e | 98 | { |
9fbe6127 AL |
99 | DeviceState *dev; |
100 | ||
da57febf | 101 | if (object_class_by_name(type) == NULL) { |
4ed658ca AF |
102 | return NULL; |
103 | } | |
da57febf | 104 | dev = DEVICE(object_new(type)); |
9fbe6127 AL |
105 | if (!dev) { |
106 | return NULL; | |
107 | } | |
108 | ||
10c4c98a | 109 | if (!bus) { |
68694897 | 110 | bus = sysbus_get_default(); |
10c4c98a GH |
111 | } |
112 | ||
9fbe6127 AL |
113 | qdev_set_parent_bus(dev, bus); |
114 | qdev_prop_set_globals(dev); | |
115 | ||
116 | return dev; | |
aae9460e PB |
117 | } |
118 | ||
119 | /* Initialize a device. Device properties should be set before calling | |
120 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
121 | calling this function. |
122 | On failure, destroy the device and return negative value. | |
123 | Return 0 on success. */ | |
81a322d4 | 124 | int qdev_init(DeviceState *dev) |
aae9460e | 125 | { |
6e008585 | 126 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
959f733a GH |
127 | int rc; |
128 | ||
131ec1bd | 129 | assert(dev->state == DEV_STATE_CREATED); |
6e008585 | 130 | |
d307af79 | 131 | rc = dc->init(dev); |
18cfeb52 MA |
132 | if (rc < 0) { |
133 | qdev_free(dev); | |
959f733a | 134 | return rc; |
18cfeb52 | 135 | } |
da57febf PB |
136 | |
137 | if (!OBJECT(dev)->parent) { | |
138 | static int unattached_count = 0; | |
139 | gchar *name = g_strdup_printf("device[%d]", unattached_count++); | |
140 | ||
dfe47e70 AF |
141 | object_property_add_child(container_get(qdev_get_machine(), |
142 | "/unattached"), | |
143 | name, OBJECT(dev), NULL); | |
da57febf PB |
144 | g_free(name); |
145 | } | |
146 | ||
6e008585 AL |
147 | if (qdev_get_vmsd(dev)) { |
148 | vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, | |
4d2ffa08 JK |
149 | dev->instance_id_alias, |
150 | dev->alias_required_for_version); | |
151 | } | |
131ec1bd | 152 | dev->state = DEV_STATE_INITIALIZED; |
94afdadc AL |
153 | if (dev->hotplugged) { |
154 | device_reset(dev); | |
5ab28c83 | 155 | } |
959f733a | 156 | return 0; |
02e2da45 PB |
157 | } |
158 | ||
4d2ffa08 JK |
159 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
160 | int required_for_version) | |
161 | { | |
162 | assert(dev->state == DEV_STATE_CREATED); | |
163 | dev->instance_id_alias = alias_id; | |
164 | dev->alias_required_for_version = required_for_version; | |
165 | } | |
166 | ||
56f9107e | 167 | void qdev_unplug(DeviceState *dev, Error **errp) |
3418bd25 | 168 | { |
6e008585 AL |
169 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
170 | ||
3418bd25 | 171 | if (!dev->parent_bus->allow_hotplug) { |
56f9107e LC |
172 | error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
173 | return; | |
3418bd25 | 174 | } |
6e008585 | 175 | assert(dc->unplug != NULL); |
593831de | 176 | |
0ac8ef71 AW |
177 | qdev_hot_removed = true; |
178 | ||
56f9107e LC |
179 | if (dc->unplug(dev) < 0) { |
180 | error_set(errp, QERR_UNDEFINED_ERROR); | |
181 | return; | |
182 | } | |
3418bd25 GH |
183 | } |
184 | ||
ec990eb6 AL |
185 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
186 | { | |
94afdadc | 187 | device_reset(dev); |
ec990eb6 AL |
188 | |
189 | return 0; | |
190 | } | |
191 | ||
192 | BusState *sysbus_get_default(void) | |
193 | { | |
68694897 | 194 | if (!main_system_bus) { |
2da8bb92 | 195 | main_system_bus_create(); |
68694897 | 196 | } |
ec990eb6 AL |
197 | return main_system_bus; |
198 | } | |
199 | ||
b4694b7c IY |
200 | static int qbus_reset_one(BusState *bus, void *opaque) |
201 | { | |
202 | if (bus->info->reset) { | |
203 | return bus->info->reset(bus); | |
204 | } | |
205 | return 0; | |
206 | } | |
207 | ||
5af0a04b IY |
208 | void qdev_reset_all(DeviceState *dev) |
209 | { | |
210 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
211 | } | |
212 | ||
80376c3f IY |
213 | void qbus_reset_all_fn(void *opaque) |
214 | { | |
215 | BusState *bus = opaque; | |
f530cce3 | 216 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); |
80376c3f IY |
217 | } |
218 | ||
3418bd25 GH |
219 | /* can be used as ->unplug() callback for the simple cases */ |
220 | int qdev_simple_unplug_cb(DeviceState *dev) | |
221 | { | |
222 | /* just zap it */ | |
57c9fafe | 223 | object_unparent(OBJECT(dev)); |
3418bd25 GH |
224 | qdev_free(dev); |
225 | return 0; | |
226 | } | |
227 | ||
3b29a101 MT |
228 | |
229 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
230 | returning an error value. This is okay during machine creation. |
231 | Don't use for hotplug, because there callers need to recover from | |
232 | failure. Exception: if you know the device's init() callback can't | |
233 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
234 | usable even then. But relying on the device implementation that | |
235 | way is somewhat unclean, and best avoided. */ | |
236 | void qdev_init_nofail(DeviceState *dev) | |
237 | { | |
bd6c9a61 | 238 | if (qdev_init(dev) < 0) { |
6e008585 AL |
239 | error_report("Initialization of device %s failed", |
240 | object_get_typename(OBJECT(dev))); | |
bd6c9a61 MA |
241 | exit(1); |
242 | } | |
e23a1b33 MA |
243 | } |
244 | ||
02e2da45 PB |
245 | /* Unlink device from bus and free the structure. */ |
246 | void qdev_free(DeviceState *dev) | |
247 | { | |
32fea402 | 248 | object_delete(OBJECT(dev)); |
aae9460e PB |
249 | } |
250 | ||
3418bd25 GH |
251 | void qdev_machine_creation_done(void) |
252 | { | |
253 | /* | |
254 | * ok, initial machine setup is done, starting from now we can | |
255 | * only create hotpluggable devices | |
256 | */ | |
257 | qdev_hotplug = 1; | |
258 | } | |
259 | ||
0ac8ef71 AW |
260 | bool qdev_machine_modified(void) |
261 | { | |
262 | return qdev_hot_added || qdev_hot_removed; | |
263 | } | |
264 | ||
02e2da45 | 265 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 266 | { |
02e2da45 | 267 | return dev->parent_bus; |
aae9460e PB |
268 | } |
269 | ||
aae9460e PB |
270 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
271 | { | |
272 | assert(dev->num_gpio_in == 0); | |
273 | dev->num_gpio_in = n; | |
274 | dev->gpio_in = qemu_allocate_irqs(handler, dev, n); | |
275 | } | |
276 | ||
277 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
278 | { | |
279 | assert(dev->num_gpio_out == 0); | |
280 | dev->num_gpio_out = n; | |
281 | dev->gpio_out = pins; | |
282 | } | |
283 | ||
284 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
285 | { | |
286 | assert(n >= 0 && n < dev->num_gpio_in); | |
287 | return dev->gpio_in[n]; | |
288 | } | |
289 | ||
290 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
291 | { | |
292 | assert(n >= 0 && n < dev->num_gpio_out); | |
293 | dev->gpio_out[n] = pin; | |
294 | } | |
295 | ||
ed16ab5a GH |
296 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) |
297 | { | |
6eed1856 | 298 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); |
ed16ab5a GH |
299 | if (nd->vlan) |
300 | qdev_prop_set_vlan(dev, "vlan", nd->vlan); | |
301 | if (nd->netdev) | |
302 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
75422b0d | 303 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && |
97b15621 GH |
304 | qdev_prop_exists(dev, "vectors")) { |
305 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
306 | } | |
48e2faf2 | 307 | nd->instantiated = 1; |
ed16ab5a GH |
308 | } |
309 | ||
02e2da45 | 310 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 311 | { |
02e2da45 | 312 | BusState *bus; |
4d6ae674 | 313 | |
72cf2d4f | 314 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 315 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 316 | return bus; |
4d6ae674 PB |
317 | } |
318 | } | |
319 | return NULL; | |
320 | } | |
321 | ||
81699d8a AL |
322 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
323 | qbus_walkerfn *busfn, void *opaque) | |
324 | { | |
325 | DeviceState *dev; | |
326 | int err; | |
327 | ||
328 | if (busfn) { | |
329 | err = busfn(bus, opaque); | |
330 | if (err) { | |
331 | return err; | |
332 | } | |
333 | } | |
334 | ||
d8bb00d6 | 335 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
81699d8a AL |
336 | err = qdev_walk_children(dev, devfn, busfn, opaque); |
337 | if (err < 0) { | |
338 | return err; | |
339 | } | |
340 | } | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
346 | qbus_walkerfn *busfn, void *opaque) | |
347 | { | |
348 | BusState *bus; | |
349 | int err; | |
350 | ||
351 | if (devfn) { | |
352 | err = devfn(dev, opaque); | |
353 | if (err) { | |
354 | return err; | |
355 | } | |
356 | } | |
357 | ||
358 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
359 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
360 | if (err < 0) { | |
361 | return err; | |
362 | } | |
363 | } | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
a2ee6b4f | 368 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 GH |
369 | { |
370 | DeviceState *dev, *ret; | |
371 | BusState *child; | |
372 | ||
d8bb00d6 | 373 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
3418bd25 GH |
374 | if (dev->id && strcmp(dev->id, id) == 0) |
375 | return dev; | |
376 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
377 | ret = qdev_find_recursive(child, id); | |
378 | if (ret) { | |
379 | return ret; | |
380 | } | |
381 | } | |
382 | } | |
383 | return NULL; | |
384 | } | |
385 | ||
cd739fb6 GH |
386 | void qbus_create_inplace(BusState *bus, BusInfo *info, |
387 | DeviceState *parent, const char *name) | |
02e2da45 | 388 | { |
d271de9f GH |
389 | char *buf; |
390 | int i,len; | |
02e2da45 | 391 | |
10c4c98a | 392 | bus->info = info; |
02e2da45 | 393 | bus->parent = parent; |
d271de9f GH |
394 | |
395 | if (name) { | |
396 | /* use supplied name */ | |
7267c094 | 397 | bus->name = g_strdup(name); |
d271de9f GH |
398 | } else if (parent && parent->id) { |
399 | /* parent device has id -> use it for bus name */ | |
400 | len = strlen(parent->id) + 16; | |
7267c094 | 401 | buf = g_malloc(len); |
d271de9f GH |
402 | snprintf(buf, len, "%s.%d", parent->id, parent->num_child_bus); |
403 | bus->name = buf; | |
404 | } else { | |
405 | /* no id -> use lowercase bus type for bus name */ | |
406 | len = strlen(info->name) + 16; | |
7267c094 | 407 | buf = g_malloc(len); |
d271de9f GH |
408 | len = snprintf(buf, len, "%s.%d", info->name, |
409 | parent ? parent->num_child_bus : 0); | |
410 | for (i = 0; i < len; i++) | |
bb87ece5 | 411 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
412 | bus->name = buf; |
413 | } | |
414 | ||
d8bb00d6 | 415 | QTAILQ_INIT(&bus->children); |
02e2da45 | 416 | if (parent) { |
72cf2d4f | 417 | QLIST_INSERT_HEAD(&parent->child_bus, bus, sibling); |
d271de9f | 418 | parent->num_child_bus++; |
80376c3f IY |
419 | } else if (bus != main_system_bus) { |
420 | /* TODO: once all bus devices are qdevified, | |
421 | only reset handler for main_system_bus should be registered here. */ | |
422 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 423 | } |
cd739fb6 GH |
424 | } |
425 | ||
426 | BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name) | |
427 | { | |
428 | BusState *bus; | |
429 | ||
7267c094 | 430 | bus = g_malloc0(info->size); |
cd739fb6 GH |
431 | bus->qdev_allocated = 1; |
432 | qbus_create_inplace(bus, info, parent, name); | |
02e2da45 PB |
433 | return bus; |
434 | } | |
cae4956e | 435 | |
2da8bb92 IY |
436 | static void main_system_bus_create(void) |
437 | { | |
438 | /* assign main_system_bus before qbus_create_inplace() | |
439 | * in order to make "if (bus != main_system_bus)" work */ | |
7267c094 | 440 | main_system_bus = g_malloc0(system_bus_info.size); |
2da8bb92 IY |
441 | main_system_bus->qdev_allocated = 1; |
442 | qbus_create_inplace(main_system_bus, &system_bus_info, NULL, | |
443 | "main-system-bus"); | |
444 | } | |
445 | ||
131ec1bd GH |
446 | void qbus_free(BusState *bus) |
447 | { | |
448 | DeviceState *dev; | |
449 | ||
d8bb00d6 | 450 | while ((dev = QTAILQ_FIRST(&bus->children)) != NULL) { |
131ec1bd GH |
451 | qdev_free(dev); |
452 | } | |
453 | if (bus->parent) { | |
454 | QLIST_REMOVE(bus, sibling); | |
455 | bus->parent->num_child_bus--; | |
80376c3f IY |
456 | } else { |
457 | assert(bus != main_system_bus); /* main_system_bus is never freed */ | |
458 | qemu_unregister_reset(qbus_reset_all_fn, bus); | |
131ec1bd | 459 | } |
7267c094 | 460 | g_free((void*)bus->name); |
131ec1bd | 461 | if (bus->qdev_allocated) { |
7267c094 | 462 | g_free(bus); |
131ec1bd GH |
463 | } |
464 | } | |
465 | ||
1ca4d09a GN |
466 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
467 | { | |
468 | int l = 0; | |
469 | ||
470 | if (dev && dev->parent_bus) { | |
471 | char *d; | |
472 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
473 | if (dev->parent_bus->info->get_fw_dev_path) { | |
474 | d = dev->parent_bus->info->get_fw_dev_path(dev); | |
475 | l += snprintf(p + l, size - l, "%s", d); | |
7267c094 | 476 | g_free(d); |
1ca4d09a | 477 | } else { |
f79f2bfc | 478 | l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev))); |
1ca4d09a GN |
479 | } |
480 | } | |
481 | l += snprintf(p + l , size - l, "/"); | |
482 | ||
483 | return l; | |
484 | } | |
485 | ||
486 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
487 | { | |
488 | char path[128]; | |
489 | int l; | |
490 | ||
491 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
492 | ||
493 | path[l-1] = '\0'; | |
494 | ||
495 | return strdup(path); | |
496 | } | |
85ed303b | 497 | |
a5296ca9 AL |
498 | /** |
499 | * Legacy property handling | |
500 | */ | |
501 | ||
57c9fafe | 502 | static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
503 | const char *name, Error **errp) |
504 | { | |
57c9fafe | 505 | DeviceState *dev = DEVICE(obj); |
a5296ca9 AL |
506 | Property *prop = opaque; |
507 | ||
e3cb6ba6 PB |
508 | char buffer[1024]; |
509 | char *ptr = buffer; | |
a5296ca9 | 510 | |
e3cb6ba6 PB |
511 | prop->info->print(dev, prop, buffer, sizeof(buffer)); |
512 | visit_type_str(v, &ptr, name, errp); | |
a5296ca9 AL |
513 | } |
514 | ||
57c9fafe | 515 | static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
516 | const char *name, Error **errp) |
517 | { | |
57c9fafe | 518 | DeviceState *dev = DEVICE(obj); |
a5296ca9 | 519 | Property *prop = opaque; |
e3cb6ba6 PB |
520 | Error *local_err = NULL; |
521 | char *ptr = NULL; | |
522 | int ret; | |
a5296ca9 AL |
523 | |
524 | if (dev->state != DEV_STATE_CREATED) { | |
525 | error_set(errp, QERR_PERMISSION_DENIED); | |
526 | return; | |
527 | } | |
528 | ||
e3cb6ba6 PB |
529 | visit_type_str(v, &ptr, name, &local_err); |
530 | if (local_err) { | |
531 | error_propagate(errp, local_err); | |
532 | return; | |
533 | } | |
a5296ca9 | 534 | |
e3cb6ba6 | 535 | ret = prop->info->parse(dev, prop, ptr); |
7db4c4e8 | 536 | error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
e3cb6ba6 | 537 | g_free(ptr); |
a5296ca9 AL |
538 | } |
539 | ||
540 | /** | |
541 | * @qdev_add_legacy_property - adds a legacy property | |
542 | * | |
543 | * Do not use this is new code! Properties added through this interface will | |
ca2cc788 | 544 | * be given names and types in the "legacy" namespace. |
a5296ca9 | 545 | * |
68ee3569 PB |
546 | * Legacy properties are string versions of other OOM properties. The format |
547 | * of the string depends on the property type. | |
a5296ca9 AL |
548 | */ |
549 | void qdev_property_add_legacy(DeviceState *dev, Property *prop, | |
550 | Error **errp) | |
551 | { | |
ca2cc788 | 552 | gchar *name, *type; |
a5296ca9 | 553 | |
f3be016d AL |
554 | /* Register pointer properties as legacy properties */ |
555 | if (!prop->info->print && !prop->info->parse && | |
556 | (prop->info->set || prop->info->get)) { | |
68ee3569 PB |
557 | return; |
558 | } | |
f3be016d | 559 | |
ca2cc788 | 560 | name = g_strdup_printf("legacy-%s", prop->name); |
cafe5bdb PB |
561 | type = g_strdup_printf("legacy<%s>", |
562 | prop->info->legacy_name ?: prop->info->name); | |
a5296ca9 | 563 | |
57c9fafe | 564 | object_property_add(OBJECT(dev), name, type, |
68ee3569 PB |
565 | prop->info->print ? qdev_get_legacy_property : prop->info->get, |
566 | prop->info->parse ? qdev_set_legacy_property : prop->info->set, | |
57c9fafe AL |
567 | NULL, |
568 | prop, errp); | |
a5296ca9 AL |
569 | |
570 | g_free(type); | |
ca2cc788 PB |
571 | g_free(name); |
572 | } | |
573 | ||
574 | /** | |
575 | * @qdev_property_add_static - add a @Property to a device. | |
576 | * | |
577 | * Static properties access data in a struct. The actual type of the | |
578 | * property and the field depends on the property type. | |
579 | */ | |
580 | void qdev_property_add_static(DeviceState *dev, Property *prop, | |
581 | Error **errp) | |
582 | { | |
d822979b PB |
583 | /* |
584 | * TODO qdev_prop_ptr does not have getters or setters. It must | |
585 | * go now that it can be replaced with links. The test should be | |
586 | * removed along with it: all static properties are read/write. | |
587 | */ | |
588 | if (!prop->info->get && !prop->info->set) { | |
589 | return; | |
590 | } | |
591 | ||
57c9fafe AL |
592 | object_property_add(OBJECT(dev), prop->name, prop->info->name, |
593 | prop->info->get, prop->info->set, | |
dd0ba250 | 594 | prop->info->release, |
57c9fafe | 595 | prop, errp); |
6a146eba | 596 | } |
1de81d28 | 597 | |
9674bfe4 AL |
598 | static void device_initfn(Object *obj) |
599 | { | |
600 | DeviceState *dev = DEVICE(obj); | |
bce54474 | 601 | ObjectClass *class; |
9674bfe4 AL |
602 | Property *prop; |
603 | ||
604 | if (qdev_hotplug) { | |
605 | dev->hotplugged = 1; | |
606 | qdev_hot_added = true; | |
607 | } | |
608 | ||
609 | dev->instance_id_alias = -1; | |
9674bfe4 AL |
610 | dev->state = DEV_STATE_CREATED; |
611 | ||
bce54474 PB |
612 | class = object_get_class(OBJECT(dev)); |
613 | do { | |
614 | for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { | |
615 | qdev_property_add_legacy(dev, prop, NULL); | |
616 | qdev_property_add_static(dev, prop, NULL); | |
617 | } | |
618 | qdev_prop_set_defaults(dev, DEVICE_CLASS(class)->props); | |
619 | class = object_class_get_parent(class); | |
620 | } while (class != object_class_by_name(TYPE_DEVICE)); | |
9674bfe4 AL |
621 | } |
622 | ||
60adba37 AL |
623 | /* Unlink device from bus and free the structure. */ |
624 | static void device_finalize(Object *obj) | |
625 | { | |
626 | DeviceState *dev = DEVICE(obj); | |
627 | BusState *bus; | |
60adba37 AL |
628 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
629 | ||
630 | if (dev->state == DEV_STATE_INITIALIZED) { | |
631 | while (dev->num_child_bus) { | |
632 | bus = QLIST_FIRST(&dev->child_bus); | |
633 | qbus_free(bus); | |
634 | } | |
635 | if (qdev_get_vmsd(dev)) { | |
636 | vmstate_unregister(dev, qdev_get_vmsd(dev), dev); | |
637 | } | |
638 | if (dc->exit) { | |
639 | dc->exit(dev); | |
640 | } | |
641 | if (dev->opts) { | |
642 | qemu_opts_del(dev->opts); | |
643 | } | |
644 | } | |
645 | QTAILQ_REMOVE(&dev->parent_bus->children, dev, sibling); | |
60adba37 AL |
646 | } |
647 | ||
bce54474 PB |
648 | static void device_class_base_init(ObjectClass *class, void *data) |
649 | { | |
650 | DeviceClass *klass = DEVICE_CLASS(class); | |
651 | ||
652 | /* We explicitly look up properties in the superclasses, | |
653 | * so do not propagate them to the subclasses. | |
654 | */ | |
655 | klass->props = NULL; | |
656 | } | |
657 | ||
94afdadc AL |
658 | void device_reset(DeviceState *dev) |
659 | { | |
660 | DeviceClass *klass = DEVICE_GET_CLASS(dev); | |
661 | ||
662 | if (klass->reset) { | |
663 | klass->reset(dev); | |
664 | } | |
665 | } | |
666 | ||
f05f6b4a PB |
667 | Object *qdev_get_machine(void) |
668 | { | |
669 | static Object *dev; | |
670 | ||
671 | if (dev == NULL) { | |
dfe47e70 | 672 | dev = container_get(object_get_root(), "/machine"); |
f05f6b4a PB |
673 | } |
674 | ||
675 | return dev; | |
676 | } | |
677 | ||
32fea402 AL |
678 | static TypeInfo device_type_info = { |
679 | .name = TYPE_DEVICE, | |
680 | .parent = TYPE_OBJECT, | |
681 | .instance_size = sizeof(DeviceState), | |
9674bfe4 | 682 | .instance_init = device_initfn, |
60adba37 | 683 | .instance_finalize = device_finalize, |
bce54474 | 684 | .class_base_init = device_class_base_init, |
32fea402 AL |
685 | .abstract = true, |
686 | .class_size = sizeof(DeviceClass), | |
687 | }; | |
688 | ||
83f7d43a | 689 | static void qdev_register_types(void) |
32fea402 AL |
690 | { |
691 | type_register_static(&device_type_info); | |
692 | } | |
693 | ||
83f7d43a | 694 | type_init(qdev_register_types) |