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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); | |
9d127820 PB |
67 | |
68 | /* This gives back ownership of kid->child back to us. */ | |
0866aca1 | 69 | object_property_del(OBJECT(bus), name, NULL); |
9d127820 | 70 | object_unref(OBJECT(kid->child)); |
0866aca1 AL |
71 | g_free(kid); |
72 | return; | |
73 | } | |
74 | } | |
75 | } | |
76 | ||
77 | static void bus_add_child(BusState *bus, DeviceState *child) | |
78 | { | |
79 | char name[32]; | |
80 | BusChild *kid = g_malloc0(sizeof(*kid)); | |
0c17542d | 81 | |
0c17542d MA |
82 | if (qdev_hotplug) { |
83 | assert(bus->allow_hotplug); | |
0c17542d | 84 | } |
a5296ca9 | 85 | |
0866aca1 AL |
86 | kid->index = bus->max_index++; |
87 | kid->child = child; | |
9d127820 | 88 | object_ref(OBJECT(kid->child)); |
a5296ca9 | 89 | |
0866aca1 AL |
90 | QTAILQ_INSERT_HEAD(&bus->children, kid, sibling); |
91 | ||
9d127820 | 92 | /* This transfers ownership of kid->child to the property. */ |
0866aca1 AL |
93 | snprintf(name, sizeof(name), "child[%d]", kid->index); |
94 | object_property_add_link(OBJECT(bus), name, | |
95 | object_get_typename(OBJECT(child)), | |
96 | (Object **)&kid->child, | |
97 | NULL); | |
98 | } | |
99 | ||
100 | void qdev_set_parent_bus(DeviceState *dev, BusState *bus) | |
101 | { | |
9fbe6127 | 102 | dev->parent_bus = bus; |
62d7ba66 | 103 | object_ref(OBJECT(bus)); |
0866aca1 | 104 | bus_add_child(bus, dev); |
0c17542d MA |
105 | } |
106 | ||
aae9460e PB |
107 | /* Create a new device. This only initializes the device state structure |
108 | and allows properties to be set. qdev_init should be called to | |
109 | initialize the actual device emulation. */ | |
02e2da45 | 110 | DeviceState *qdev_create(BusState *bus, const char *name) |
0bcdeda7 BS |
111 | { |
112 | DeviceState *dev; | |
113 | ||
114 | dev = qdev_try_create(bus, name); | |
115 | if (!dev) { | |
e92714c7 | 116 | if (bus) { |
23e3fbec EH |
117 | error_report("Unknown device '%s' for bus '%s'\n", name, |
118 | object_get_typename(OBJECT(bus))); | |
119 | abort(); | |
e92714c7 | 120 | } else { |
23e3fbec EH |
121 | error_report("Unknown device '%s' for default sysbus\n", name); |
122 | abort(); | |
e92714c7 | 123 | } |
0bcdeda7 BS |
124 | } |
125 | ||
126 | return dev; | |
127 | } | |
128 | ||
da57febf | 129 | DeviceState *qdev_try_create(BusState *bus, const char *type) |
aae9460e | 130 | { |
9fbe6127 AL |
131 | DeviceState *dev; |
132 | ||
da57febf | 133 | if (object_class_by_name(type) == NULL) { |
4ed658ca AF |
134 | return NULL; |
135 | } | |
da57febf | 136 | dev = DEVICE(object_new(type)); |
9fbe6127 AL |
137 | if (!dev) { |
138 | return NULL; | |
139 | } | |
140 | ||
10c4c98a | 141 | if (!bus) { |
68694897 | 142 | bus = sysbus_get_default(); |
10c4c98a GH |
143 | } |
144 | ||
9fbe6127 | 145 | qdev_set_parent_bus(dev, bus); |
b09995ae | 146 | object_unref(OBJECT(dev)); |
9fbe6127 | 147 | return dev; |
aae9460e PB |
148 | } |
149 | ||
150 | /* Initialize a device. Device properties should be set before calling | |
151 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
152 | calling this function. |
153 | On failure, destroy the device and return negative value. | |
154 | Return 0 on success. */ | |
81a322d4 | 155 | int qdev_init(DeviceState *dev) |
aae9460e | 156 | { |
249d4172 | 157 | Error *local_err = NULL; |
959f733a | 158 | |
7983c8a3 | 159 | assert(!dev->realized); |
6e008585 | 160 | |
249d4172 AF |
161 | object_property_set_bool(OBJECT(dev), true, "realized", &local_err); |
162 | if (local_err != NULL) { | |
163 | error_free(local_err); | |
18cfeb52 | 164 | qdev_free(dev); |
249d4172 | 165 | return -1; |
18cfeb52 | 166 | } |
249d4172 AF |
167 | return 0; |
168 | } | |
da57febf | 169 | |
249d4172 AF |
170 | static void device_realize(DeviceState *dev, Error **err) |
171 | { | |
172 | DeviceClass *dc = DEVICE_GET_CLASS(dev); | |
da57febf | 173 | |
249d4172 AF |
174 | if (dc->init) { |
175 | int rc = dc->init(dev); | |
176 | if (rc < 0) { | |
177 | error_setg(err, "Device initialization failed."); | |
178 | return; | |
179 | } | |
5ab28c83 | 180 | } |
02e2da45 PB |
181 | } |
182 | ||
4d2ffa08 JK |
183 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
184 | int required_for_version) | |
185 | { | |
7983c8a3 | 186 | assert(!dev->realized); |
4d2ffa08 JK |
187 | dev->instance_id_alias = alias_id; |
188 | dev->alias_required_for_version = required_for_version; | |
189 | } | |
190 | ||
56f9107e | 191 | void qdev_unplug(DeviceState *dev, Error **errp) |
3418bd25 | 192 | { |
6e008585 AL |
193 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
194 | ||
3418bd25 | 195 | if (!dev->parent_bus->allow_hotplug) { |
56f9107e LC |
196 | error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
197 | return; | |
3418bd25 | 198 | } |
6e008585 | 199 | assert(dc->unplug != NULL); |
593831de | 200 | |
0ac8ef71 AW |
201 | qdev_hot_removed = true; |
202 | ||
56f9107e LC |
203 | if (dc->unplug(dev) < 0) { |
204 | error_set(errp, QERR_UNDEFINED_ERROR); | |
205 | return; | |
206 | } | |
3418bd25 GH |
207 | } |
208 | ||
ec990eb6 AL |
209 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
210 | { | |
94afdadc | 211 | device_reset(dev); |
ec990eb6 AL |
212 | |
213 | return 0; | |
214 | } | |
215 | ||
b4694b7c IY |
216 | static int qbus_reset_one(BusState *bus, void *opaque) |
217 | { | |
0d936928 AL |
218 | BusClass *bc = BUS_GET_CLASS(bus); |
219 | if (bc->reset) { | |
220 | return bc->reset(bus); | |
b4694b7c IY |
221 | } |
222 | return 0; | |
223 | } | |
224 | ||
5af0a04b IY |
225 | void qdev_reset_all(DeviceState *dev) |
226 | { | |
227 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
228 | } | |
229 | ||
d0508c36 PB |
230 | void qbus_reset_all(BusState *bus) |
231 | { | |
232 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); | |
233 | } | |
234 | ||
80376c3f IY |
235 | void qbus_reset_all_fn(void *opaque) |
236 | { | |
237 | BusState *bus = opaque; | |
d0508c36 | 238 | qbus_reset_all(bus); |
80376c3f IY |
239 | } |
240 | ||
3418bd25 GH |
241 | /* can be used as ->unplug() callback for the simple cases */ |
242 | int qdev_simple_unplug_cb(DeviceState *dev) | |
243 | { | |
244 | /* just zap it */ | |
245 | qdev_free(dev); | |
246 | return 0; | |
247 | } | |
248 | ||
3b29a101 MT |
249 | |
250 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
251 | returning an error value. This is okay during machine creation. |
252 | Don't use for hotplug, because there callers need to recover from | |
253 | failure. Exception: if you know the device's init() callback can't | |
254 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
255 | usable even then. But relying on the device implementation that | |
256 | way is somewhat unclean, and best avoided. */ | |
257 | void qdev_init_nofail(DeviceState *dev) | |
258 | { | |
7de3abe5 AL |
259 | const char *typename = object_get_typename(OBJECT(dev)); |
260 | ||
bd6c9a61 | 261 | if (qdev_init(dev) < 0) { |
7de3abe5 | 262 | error_report("Initialization of device %s failed", typename); |
bd6c9a61 MA |
263 | exit(1); |
264 | } | |
e23a1b33 MA |
265 | } |
266 | ||
02e2da45 PB |
267 | /* Unlink device from bus and free the structure. */ |
268 | void qdev_free(DeviceState *dev) | |
269 | { | |
dc7389b7 | 270 | object_unparent(OBJECT(dev)); |
aae9460e PB |
271 | } |
272 | ||
3418bd25 GH |
273 | void qdev_machine_creation_done(void) |
274 | { | |
275 | /* | |
276 | * ok, initial machine setup is done, starting from now we can | |
277 | * only create hotpluggable devices | |
278 | */ | |
279 | qdev_hotplug = 1; | |
280 | } | |
281 | ||
0ac8ef71 AW |
282 | bool qdev_machine_modified(void) |
283 | { | |
284 | return qdev_hot_added || qdev_hot_removed; | |
285 | } | |
286 | ||
02e2da45 | 287 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 288 | { |
02e2da45 | 289 | return dev->parent_bus; |
aae9460e PB |
290 | } |
291 | ||
aae9460e PB |
292 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
293 | { | |
1e5b31e6 PC |
294 | dev->gpio_in = qemu_extend_irqs(dev->gpio_in, dev->num_gpio_in, handler, |
295 | dev, n); | |
296 | dev->num_gpio_in += n; | |
aae9460e PB |
297 | } |
298 | ||
299 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
300 | { | |
301 | assert(dev->num_gpio_out == 0); | |
302 | dev->num_gpio_out = n; | |
303 | dev->gpio_out = pins; | |
304 | } | |
305 | ||
306 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
307 | { | |
308 | assert(n >= 0 && n < dev->num_gpio_in); | |
309 | return dev->gpio_in[n]; | |
310 | } | |
311 | ||
312 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
313 | { | |
314 | assert(n >= 0 && n < dev->num_gpio_out); | |
315 | dev->gpio_out[n] = pin; | |
316 | } | |
317 | ||
02e2da45 | 318 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 319 | { |
02e2da45 | 320 | BusState *bus; |
4d6ae674 | 321 | |
72cf2d4f | 322 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 323 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 324 | return bus; |
4d6ae674 PB |
325 | } |
326 | } | |
327 | return NULL; | |
328 | } | |
329 | ||
81699d8a AL |
330 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
331 | qbus_walkerfn *busfn, void *opaque) | |
332 | { | |
0866aca1 | 333 | BusChild *kid; |
81699d8a AL |
334 | int err; |
335 | ||
336 | if (busfn) { | |
337 | err = busfn(bus, opaque); | |
338 | if (err) { | |
339 | return err; | |
340 | } | |
341 | } | |
342 | ||
0866aca1 AL |
343 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
344 | err = qdev_walk_children(kid->child, devfn, busfn, opaque); | |
81699d8a AL |
345 | if (err < 0) { |
346 | return err; | |
347 | } | |
348 | } | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
354 | qbus_walkerfn *busfn, void *opaque) | |
355 | { | |
356 | BusState *bus; | |
357 | int err; | |
358 | ||
359 | if (devfn) { | |
360 | err = devfn(dev, opaque); | |
361 | if (err) { | |
362 | return err; | |
363 | } | |
364 | } | |
365 | ||
366 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
367 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
368 | if (err < 0) { | |
369 | return err; | |
370 | } | |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
a2ee6b4f | 376 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 | 377 | { |
0866aca1 AL |
378 | BusChild *kid; |
379 | DeviceState *ret; | |
3418bd25 GH |
380 | BusState *child; |
381 | ||
0866aca1 AL |
382 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
383 | DeviceState *dev = kid->child; | |
384 | ||
385 | if (dev->id && strcmp(dev->id, id) == 0) { | |
3418bd25 | 386 | return dev; |
0866aca1 AL |
387 | } |
388 | ||
3418bd25 GH |
389 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
390 | ret = qdev_find_recursive(child, id); | |
391 | if (ret) { | |
392 | return ret; | |
393 | } | |
394 | } | |
395 | } | |
396 | return NULL; | |
397 | } | |
398 | ||
013e1182 | 399 | static void qbus_realize(BusState *bus, DeviceState *parent, const char *name) |
02e2da45 | 400 | { |
ac7d1ba6 | 401 | const char *typename = object_get_typename(OBJECT(bus)); |
d271de9f GH |
402 | char *buf; |
403 | int i,len; | |
02e2da45 | 404 | |
013e1182 PB |
405 | bus->parent = parent; |
406 | ||
407 | if (name) { | |
408 | bus->name = g_strdup(name); | |
ac7d1ba6 | 409 | } else if (bus->parent && bus->parent->id) { |
d271de9f | 410 | /* parent device has id -> use it for bus name */ |
ac7d1ba6 | 411 | len = strlen(bus->parent->id) + 16; |
7267c094 | 412 | buf = g_malloc(len); |
ac7d1ba6 | 413 | snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus); |
d271de9f GH |
414 | bus->name = buf; |
415 | } else { | |
416 | /* no id -> use lowercase bus type for bus name */ | |
0d936928 | 417 | len = strlen(typename) + 16; |
7267c094 | 418 | buf = g_malloc(len); |
0d936928 | 419 | len = snprintf(buf, len, "%s.%d", typename, |
ac7d1ba6 | 420 | bus->parent ? bus->parent->num_child_bus : 0); |
d271de9f | 421 | for (i = 0; i < len; i++) |
bb87ece5 | 422 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
423 | bus->name = buf; |
424 | } | |
425 | ||
ac7d1ba6 AL |
426 | if (bus->parent) { |
427 | QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); | |
428 | bus->parent->num_child_bus++; | |
429 | object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL); | |
b09995ae | 430 | object_unref(OBJECT(bus)); |
8185d216 | 431 | } else if (bus != sysbus_get_default()) { |
80376c3f IY |
432 | /* TODO: once all bus devices are qdevified, |
433 | only reset handler for main_system_bus should be registered here. */ | |
434 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 435 | } |
cd739fb6 GH |
436 | } |
437 | ||
6853d27a PB |
438 | static void bus_unparent(Object *obj) |
439 | { | |
440 | BusState *bus = BUS(obj); | |
441 | BusChild *kid; | |
442 | ||
443 | while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { | |
444 | DeviceState *dev = kid->child; | |
445 | qdev_free(dev); | |
446 | } | |
447 | if (bus->parent) { | |
448 | QLIST_REMOVE(bus, sibling); | |
449 | bus->parent->num_child_bus--; | |
450 | bus->parent = NULL; | |
451 | } else { | |
452 | assert(bus != sysbus_get_default()); /* main_system_bus is never freed */ | |
453 | qemu_unregister_reset(qbus_reset_all_fn, bus); | |
454 | } | |
455 | } | |
456 | ||
39355c38 | 457 | void qbus_create_inplace(void *bus, const char *typename, |
0d936928 | 458 | DeviceState *parent, const char *name) |
cd739fb6 | 459 | { |
0d936928 | 460 | object_initialize(bus, typename); |
013e1182 | 461 | qbus_realize(bus, parent, name); |
02e2da45 | 462 | } |
cae4956e | 463 | |
0d936928 | 464 | BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
2da8bb92 | 465 | { |
cd739fb6 GH |
466 | BusState *bus; |
467 | ||
0d936928 | 468 | bus = BUS(object_new(typename)); |
013e1182 | 469 | qbus_realize(bus, parent, name); |
ac7d1ba6 | 470 | |
02e2da45 | 471 | return bus; |
2da8bb92 IY |
472 | } |
473 | ||
131ec1bd GH |
474 | void qbus_free(BusState *bus) |
475 | { | |
dc7389b7 | 476 | object_unparent(OBJECT(bus)); |
0d936928 AL |
477 | } |
478 | ||
479 | static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) | |
480 | { | |
481 | BusClass *bc = BUS_GET_CLASS(bus); | |
482 | ||
483 | if (bc->get_fw_dev_path) { | |
484 | return bc->get_fw_dev_path(dev); | |
131ec1bd | 485 | } |
0d936928 AL |
486 | |
487 | return NULL; | |
131ec1bd GH |
488 | } |
489 | ||
1ca4d09a GN |
490 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
491 | { | |
492 | int l = 0; | |
493 | ||
494 | if (dev && dev->parent_bus) { | |
495 | char *d; | |
496 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
0d936928 AL |
497 | d = bus_get_fw_dev_path(dev->parent_bus, dev); |
498 | if (d) { | |
1ca4d09a | 499 | l += snprintf(p + l, size - l, "%s", d); |
7267c094 | 500 | g_free(d); |
1ca4d09a | 501 | } else { |
f79f2bfc | 502 | l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev))); |
1ca4d09a GN |
503 | } |
504 | } | |
505 | l += snprintf(p + l , size - l, "/"); | |
506 | ||
507 | return l; | |
508 | } | |
509 | ||
510 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
511 | { | |
512 | char path[128]; | |
513 | int l; | |
514 | ||
515 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
516 | ||
517 | path[l-1] = '\0'; | |
518 | ||
a5cf8262 | 519 | return g_strdup(path); |
1ca4d09a | 520 | } |
85ed303b | 521 | |
09e5ab63 | 522 | char *qdev_get_dev_path(DeviceState *dev) |
85ed303b | 523 | { |
0d936928 | 524 | BusClass *bc; |
09e5ab63 AL |
525 | |
526 | if (!dev || !dev->parent_bus) { | |
527 | return NULL; | |
528 | } | |
529 | ||
0d936928 AL |
530 | bc = BUS_GET_CLASS(dev->parent_bus); |
531 | if (bc->get_dev_path) { | |
532 | return bc->get_dev_path(dev); | |
09e5ab63 AL |
533 | } |
534 | ||
535 | return NULL; | |
44677ded | 536 | } |
a5296ca9 AL |
537 | |
538 | /** | |
539 | * Legacy property handling | |
540 | */ | |
541 | ||
57c9fafe | 542 | static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
543 | const char *name, Error **errp) |
544 | { | |
57c9fafe | 545 | DeviceState *dev = DEVICE(obj); |
a5296ca9 AL |
546 | Property *prop = opaque; |
547 | ||
e3cb6ba6 PB |
548 | char buffer[1024]; |
549 | char *ptr = buffer; | |
a5296ca9 | 550 | |
e3cb6ba6 PB |
551 | prop->info->print(dev, prop, buffer, sizeof(buffer)); |
552 | visit_type_str(v, &ptr, name, errp); | |
a5296ca9 AL |
553 | } |
554 | ||
57c9fafe | 555 | static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
556 | const char *name, Error **errp) |
557 | { | |
57c9fafe | 558 | DeviceState *dev = DEVICE(obj); |
a5296ca9 | 559 | Property *prop = opaque; |
e3cb6ba6 PB |
560 | Error *local_err = NULL; |
561 | char *ptr = NULL; | |
562 | int ret; | |
a5296ca9 | 563 | |
7983c8a3 | 564 | if (dev->realized) { |
a5296ca9 AL |
565 | error_set(errp, QERR_PERMISSION_DENIED); |
566 | return; | |
567 | } | |
568 | ||
e3cb6ba6 PB |
569 | visit_type_str(v, &ptr, name, &local_err); |
570 | if (local_err) { | |
571 | error_propagate(errp, local_err); | |
572 | return; | |
573 | } | |
a5296ca9 | 574 | |
e3cb6ba6 | 575 | ret = prop->info->parse(dev, prop, ptr); |
7db4c4e8 | 576 | error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
e3cb6ba6 | 577 | g_free(ptr); |
a5296ca9 AL |
578 | } |
579 | ||
580 | /** | |
581 | * @qdev_add_legacy_property - adds a legacy property | |
582 | * | |
583 | * Do not use this is new code! Properties added through this interface will | |
ca2cc788 | 584 | * be given names and types in the "legacy" namespace. |
a5296ca9 | 585 | * |
68ee3569 PB |
586 | * Legacy properties are string versions of other OOM properties. The format |
587 | * of the string depends on the property type. | |
a5296ca9 AL |
588 | */ |
589 | void qdev_property_add_legacy(DeviceState *dev, Property *prop, | |
590 | Error **errp) | |
591 | { | |
ca2cc788 | 592 | gchar *name, *type; |
a5296ca9 | 593 | |
f3be016d AL |
594 | /* Register pointer properties as legacy properties */ |
595 | if (!prop->info->print && !prop->info->parse && | |
596 | (prop->info->set || prop->info->get)) { | |
68ee3569 PB |
597 | return; |
598 | } | |
f3be016d | 599 | |
ca2cc788 | 600 | name = g_strdup_printf("legacy-%s", prop->name); |
cafe5bdb PB |
601 | type = g_strdup_printf("legacy<%s>", |
602 | prop->info->legacy_name ?: prop->info->name); | |
a5296ca9 | 603 | |
57c9fafe | 604 | object_property_add(OBJECT(dev), name, type, |
68ee3569 PB |
605 | prop->info->print ? qdev_get_legacy_property : prop->info->get, |
606 | prop->info->parse ? qdev_set_legacy_property : prop->info->set, | |
57c9fafe AL |
607 | NULL, |
608 | prop, errp); | |
a5296ca9 AL |
609 | |
610 | g_free(type); | |
ca2cc788 PB |
611 | g_free(name); |
612 | } | |
613 | ||
614 | /** | |
615 | * @qdev_property_add_static - add a @Property to a device. | |
616 | * | |
617 | * Static properties access data in a struct. The actual type of the | |
618 | * property and the field depends on the property type. | |
619 | */ | |
620 | void qdev_property_add_static(DeviceState *dev, Property *prop, | |
621 | Error **errp) | |
622 | { | |
fdae245f PB |
623 | Error *local_err = NULL; |
624 | Object *obj = OBJECT(dev); | |
625 | ||
d822979b PB |
626 | /* |
627 | * TODO qdev_prop_ptr does not have getters or setters. It must | |
628 | * go now that it can be replaced with links. The test should be | |
629 | * removed along with it: all static properties are read/write. | |
630 | */ | |
631 | if (!prop->info->get && !prop->info->set) { | |
632 | return; | |
633 | } | |
634 | ||
fdae245f | 635 | object_property_add(obj, prop->name, prop->info->name, |
57c9fafe | 636 | prop->info->get, prop->info->set, |
dd0ba250 | 637 | prop->info->release, |
fdae245f PB |
638 | prop, &local_err); |
639 | ||
640 | if (local_err) { | |
641 | error_propagate(errp, local_err); | |
642 | return; | |
643 | } | |
644 | if (prop->qtype == QTYPE_NONE) { | |
645 | return; | |
646 | } | |
647 | ||
648 | if (prop->qtype == QTYPE_QBOOL) { | |
649 | object_property_set_bool(obj, prop->defval, prop->name, &local_err); | |
650 | } else if (prop->info->enum_table) { | |
651 | object_property_set_str(obj, prop->info->enum_table[prop->defval], | |
652 | prop->name, &local_err); | |
653 | } else if (prop->qtype == QTYPE_QINT) { | |
654 | object_property_set_int(obj, prop->defval, prop->name, &local_err); | |
655 | } | |
656 | assert_no_error(local_err); | |
6a146eba | 657 | } |
1de81d28 | 658 | |
249d4172 AF |
659 | static bool device_get_realized(Object *obj, Error **err) |
660 | { | |
661 | DeviceState *dev = DEVICE(obj); | |
662 | return dev->realized; | |
663 | } | |
664 | ||
665 | static void device_set_realized(Object *obj, bool value, Error **err) | |
666 | { | |
667 | DeviceState *dev = DEVICE(obj); | |
668 | DeviceClass *dc = DEVICE_GET_CLASS(dev); | |
669 | Error *local_err = NULL; | |
670 | ||
671 | if (value && !dev->realized) { | |
672 | if (dc->realize) { | |
673 | dc->realize(dev, &local_err); | |
674 | } | |
675 | ||
676 | if (!obj->parent && local_err == NULL) { | |
677 | static int unattached_count; | |
678 | gchar *name = g_strdup_printf("device[%d]", unattached_count++); | |
679 | ||
680 | object_property_add_child(container_get(qdev_get_machine(), | |
681 | "/unattached"), | |
682 | name, obj, &local_err); | |
683 | g_free(name); | |
684 | } | |
685 | ||
686 | if (qdev_get_vmsd(dev) && local_err == NULL) { | |
687 | vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, | |
688 | dev->instance_id_alias, | |
689 | dev->alias_required_for_version); | |
690 | } | |
691 | if (dev->hotplugged && local_err == NULL) { | |
692 | device_reset(dev); | |
693 | } | |
694 | } else if (!value && dev->realized) { | |
695 | if (dc->unrealize) { | |
696 | dc->unrealize(dev, &local_err); | |
697 | } | |
698 | } | |
699 | ||
700 | if (local_err != NULL) { | |
701 | error_propagate(err, local_err); | |
702 | return; | |
703 | } | |
704 | ||
705 | dev->realized = value; | |
706 | } | |
707 | ||
9674bfe4 AL |
708 | static void device_initfn(Object *obj) |
709 | { | |
710 | DeviceState *dev = DEVICE(obj); | |
bce54474 | 711 | ObjectClass *class; |
9674bfe4 AL |
712 | Property *prop; |
713 | ||
714 | if (qdev_hotplug) { | |
715 | dev->hotplugged = 1; | |
716 | qdev_hot_added = true; | |
717 | } | |
718 | ||
719 | dev->instance_id_alias = -1; | |
7983c8a3 | 720 | dev->realized = false; |
9674bfe4 | 721 | |
249d4172 AF |
722 | object_property_add_bool(obj, "realized", |
723 | device_get_realized, device_set_realized, NULL); | |
724 | ||
bce54474 PB |
725 | class = object_get_class(OBJECT(dev)); |
726 | do { | |
727 | for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { | |
728 | qdev_property_add_legacy(dev, prop, NULL); | |
729 | qdev_property_add_static(dev, prop, NULL); | |
730 | } | |
bce54474 PB |
731 | class = object_class_get_parent(class); |
732 | } while (class != object_class_by_name(TYPE_DEVICE)); | |
4b3582b0 | 733 | qdev_prop_set_globals(dev); |
9674bfe4 | 734 | |
f968fc68 AL |
735 | object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS, |
736 | (Object **)&dev->parent_bus, NULL); | |
9674bfe4 AL |
737 | } |
738 | ||
60adba37 AL |
739 | /* Unlink device from bus and free the structure. */ |
740 | static void device_finalize(Object *obj) | |
741 | { | |
742 | DeviceState *dev = DEVICE(obj); | |
06f7f2bb PB |
743 | if (dev->opts) { |
744 | qemu_opts_del(dev->opts); | |
60adba37 | 745 | } |
60adba37 AL |
746 | } |
747 | ||
bce54474 PB |
748 | static void device_class_base_init(ObjectClass *class, void *data) |
749 | { | |
750 | DeviceClass *klass = DEVICE_CLASS(class); | |
751 | ||
752 | /* We explicitly look up properties in the superclasses, | |
753 | * so do not propagate them to the subclasses. | |
754 | */ | |
755 | klass->props = NULL; | |
60adba37 AL |
756 | } |
757 | ||
5d5b24d0 | 758 | static void device_unparent(Object *obj) |
667d22d1 PB |
759 | { |
760 | DeviceState *dev = DEVICE(obj); | |
06f7f2bb PB |
761 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
762 | BusState *bus; | |
667d22d1 | 763 | |
06f7f2bb PB |
764 | while (dev->num_child_bus) { |
765 | bus = QLIST_FIRST(&dev->child_bus); | |
766 | qbus_free(bus); | |
767 | } | |
768 | if (dev->realized) { | |
769 | if (qdev_get_vmsd(dev)) { | |
770 | vmstate_unregister(dev, qdev_get_vmsd(dev), dev); | |
771 | } | |
772 | if (dc->exit) { | |
773 | dc->exit(dev); | |
774 | } | |
775 | } | |
776 | if (dev->parent_bus) { | |
5d5b24d0 | 777 | bus_remove_child(dev->parent_bus, dev); |
62d7ba66 PB |
778 | object_unref(OBJECT(dev->parent_bus)); |
779 | dev->parent_bus = NULL; | |
5d5b24d0 | 780 | } |
667d22d1 PB |
781 | } |
782 | ||
783 | static void device_class_init(ObjectClass *class, void *data) | |
784 | { | |
249d4172 AF |
785 | DeviceClass *dc = DEVICE_CLASS(class); |
786 | ||
5d5b24d0 | 787 | class->unparent = device_unparent; |
249d4172 | 788 | dc->realize = device_realize; |
667d22d1 PB |
789 | } |
790 | ||
94afdadc AL |
791 | void device_reset(DeviceState *dev) |
792 | { | |
793 | DeviceClass *klass = DEVICE_GET_CLASS(dev); | |
794 | ||
795 | if (klass->reset) { | |
796 | klass->reset(dev); | |
797 | } | |
798 | } | |
799 | ||
f05f6b4a PB |
800 | Object *qdev_get_machine(void) |
801 | { | |
802 | static Object *dev; | |
803 | ||
804 | if (dev == NULL) { | |
dfe47e70 | 805 | dev = container_get(object_get_root(), "/machine"); |
f05f6b4a PB |
806 | } |
807 | ||
808 | return dev; | |
809 | } | |
810 | ||
8c43a6f0 | 811 | static const TypeInfo device_type_info = { |
32fea402 AL |
812 | .name = TYPE_DEVICE, |
813 | .parent = TYPE_OBJECT, | |
814 | .instance_size = sizeof(DeviceState), | |
9674bfe4 | 815 | .instance_init = device_initfn, |
60adba37 | 816 | .instance_finalize = device_finalize, |
bce54474 | 817 | .class_base_init = device_class_base_init, |
667d22d1 | 818 | .class_init = device_class_init, |
32fea402 AL |
819 | .abstract = true, |
820 | .class_size = sizeof(DeviceClass), | |
821 | }; | |
822 | ||
ac7d1ba6 AL |
823 | static void qbus_initfn(Object *obj) |
824 | { | |
825 | BusState *bus = BUS(obj); | |
826 | ||
827 | QTAILQ_INIT(&bus->children); | |
828 | } | |
829 | ||
6853d27a PB |
830 | static void bus_class_init(ObjectClass *class, void *data) |
831 | { | |
832 | class->unparent = bus_unparent; | |
833 | } | |
834 | ||
ac7d1ba6 AL |
835 | static void qbus_finalize(Object *obj) |
836 | { | |
837 | BusState *bus = BUS(obj); | |
ac7d1ba6 | 838 | |
ac7d1ba6 AL |
839 | g_free((char *)bus->name); |
840 | } | |
841 | ||
0d936928 AL |
842 | static const TypeInfo bus_info = { |
843 | .name = TYPE_BUS, | |
844 | .parent = TYPE_OBJECT, | |
845 | .instance_size = sizeof(BusState), | |
846 | .abstract = true, | |
847 | .class_size = sizeof(BusClass), | |
ac7d1ba6 AL |
848 | .instance_init = qbus_initfn, |
849 | .instance_finalize = qbus_finalize, | |
6853d27a | 850 | .class_init = bus_class_init, |
0d936928 AL |
851 | }; |
852 | ||
83f7d43a | 853 | static void qdev_register_types(void) |
32fea402 | 854 | { |
0d936928 | 855 | type_register_static(&bus_info); |
32fea402 AL |
856 | type_register_static(&device_type_info); |
857 | } | |
858 | ||
83f7d43a | 859 | type_init(qdev_register_types) |