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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 | ||
83c9f4ca | 28 | #include "hw/qdev.h" |
9c17d615 | 29 | #include "sysemu/sysemu.h" |
7b1b5d19 | 30 | #include "qapi/error.h" |
b4a42f81 | 31 | #include "qapi/qmp/qerror.h" |
7b1b5d19 | 32 | #include "qapi/visitor.h" |
0402a5d6 MT |
33 | #include "qapi/qmp/qjson.h" |
34 | #include "monitor/monitor.h" | |
aae9460e | 35 | |
ee46d8a5 | 36 | int qdev_hotplug = 0; |
0ac8ef71 AW |
37 | static bool qdev_hot_added = false; |
38 | static bool qdev_hot_removed = false; | |
3418bd25 | 39 | |
4be9f0d1 AL |
40 | const VMStateDescription *qdev_get_vmsd(DeviceState *dev) |
41 | { | |
6e008585 AL |
42 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
43 | return dc->vmsd; | |
4be9f0d1 AL |
44 | } |
45 | ||
4be9f0d1 AL |
46 | const char *qdev_fw_name(DeviceState *dev) |
47 | { | |
6e008585 | 48 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
4be9f0d1 | 49 | |
6e008585 AL |
50 | if (dc->fw_name) { |
51 | return dc->fw_name; | |
4be9f0d1 AL |
52 | } |
53 | ||
54 | return object_get_typename(OBJECT(dev)); | |
55 | } | |
56 | ||
ca2cc788 PB |
57 | static void qdev_property_add_legacy(DeviceState *dev, Property *prop, |
58 | Error **errp); | |
59 | ||
0866aca1 | 60 | static void bus_remove_child(BusState *bus, DeviceState *child) |
0c17542d | 61 | { |
0866aca1 AL |
62 | BusChild *kid; |
63 | ||
64 | QTAILQ_FOREACH(kid, &bus->children, sibling) { | |
65 | if (kid->child == child) { | |
66 | char name[32]; | |
67 | ||
68 | snprintf(name, sizeof(name), "child[%d]", kid->index); | |
69 | QTAILQ_REMOVE(&bus->children, kid, sibling); | |
9d127820 PB |
70 | |
71 | /* This gives back ownership of kid->child back to us. */ | |
0866aca1 | 72 | object_property_del(OBJECT(bus), name, NULL); |
9d127820 | 73 | object_unref(OBJECT(kid->child)); |
0866aca1 AL |
74 | g_free(kid); |
75 | return; | |
76 | } | |
77 | } | |
78 | } | |
79 | ||
80 | static void bus_add_child(BusState *bus, DeviceState *child) | |
81 | { | |
82 | char name[32]; | |
83 | BusChild *kid = g_malloc0(sizeof(*kid)); | |
0c17542d | 84 | |
0c17542d MA |
85 | if (qdev_hotplug) { |
86 | assert(bus->allow_hotplug); | |
0c17542d | 87 | } |
a5296ca9 | 88 | |
0866aca1 AL |
89 | kid->index = bus->max_index++; |
90 | kid->child = child; | |
9d127820 | 91 | object_ref(OBJECT(kid->child)); |
a5296ca9 | 92 | |
0866aca1 AL |
93 | QTAILQ_INSERT_HEAD(&bus->children, kid, sibling); |
94 | ||
9d127820 | 95 | /* This transfers ownership of kid->child to the property. */ |
0866aca1 AL |
96 | snprintf(name, sizeof(name), "child[%d]", kid->index); |
97 | object_property_add_link(OBJECT(bus), name, | |
98 | object_get_typename(OBJECT(child)), | |
99 | (Object **)&kid->child, | |
100 | NULL); | |
101 | } | |
102 | ||
103 | void qdev_set_parent_bus(DeviceState *dev, BusState *bus) | |
104 | { | |
9fbe6127 | 105 | dev->parent_bus = bus; |
62d7ba66 | 106 | object_ref(OBJECT(bus)); |
0866aca1 | 107 | bus_add_child(bus, dev); |
0c17542d MA |
108 | } |
109 | ||
aae9460e PB |
110 | /* Create a new device. This only initializes the device state structure |
111 | and allows properties to be set. qdev_init should be called to | |
112 | initialize the actual device emulation. */ | |
02e2da45 | 113 | DeviceState *qdev_create(BusState *bus, const char *name) |
0bcdeda7 BS |
114 | { |
115 | DeviceState *dev; | |
116 | ||
117 | dev = qdev_try_create(bus, name); | |
118 | if (!dev) { | |
e92714c7 | 119 | if (bus) { |
312fd5f2 | 120 | error_report("Unknown device '%s' for bus '%s'", name, |
23e3fbec | 121 | object_get_typename(OBJECT(bus))); |
e92714c7 | 122 | } else { |
312fd5f2 | 123 | error_report("Unknown device '%s' for default sysbus", name); |
e92714c7 | 124 | } |
01ed1d52 | 125 | abort(); |
0bcdeda7 BS |
126 | } |
127 | ||
128 | return dev; | |
129 | } | |
130 | ||
da57febf | 131 | DeviceState *qdev_try_create(BusState *bus, const char *type) |
aae9460e | 132 | { |
9fbe6127 AL |
133 | DeviceState *dev; |
134 | ||
da57febf | 135 | if (object_class_by_name(type) == NULL) { |
4ed658ca AF |
136 | return NULL; |
137 | } | |
da57febf | 138 | dev = DEVICE(object_new(type)); |
9fbe6127 AL |
139 | if (!dev) { |
140 | return NULL; | |
141 | } | |
142 | ||
10c4c98a | 143 | if (!bus) { |
68694897 | 144 | bus = sysbus_get_default(); |
10c4c98a GH |
145 | } |
146 | ||
9fbe6127 | 147 | qdev_set_parent_bus(dev, bus); |
b09995ae | 148 | object_unref(OBJECT(dev)); |
9fbe6127 | 149 | return dev; |
aae9460e PB |
150 | } |
151 | ||
152 | /* Initialize a device. Device properties should be set before calling | |
153 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
154 | calling this function. |
155 | On failure, destroy the device and return negative value. | |
156 | Return 0 on success. */ | |
81a322d4 | 157 | int qdev_init(DeviceState *dev) |
aae9460e | 158 | { |
249d4172 | 159 | Error *local_err = NULL; |
959f733a | 160 | |
7983c8a3 | 161 | assert(!dev->realized); |
6e008585 | 162 | |
249d4172 AF |
163 | object_property_set_bool(OBJECT(dev), true, "realized", &local_err); |
164 | if (local_err != NULL) { | |
cffc5113 | 165 | qerror_report_err(local_err); |
249d4172 | 166 | error_free(local_err); |
02a5c4c9 | 167 | object_unparent(OBJECT(dev)); |
249d4172 | 168 | return -1; |
18cfeb52 | 169 | } |
249d4172 AF |
170 | return 0; |
171 | } | |
da57febf | 172 | |
249d4172 AF |
173 | static void device_realize(DeviceState *dev, Error **err) |
174 | { | |
175 | DeviceClass *dc = DEVICE_GET_CLASS(dev); | |
da57febf | 176 | |
249d4172 AF |
177 | if (dc->init) { |
178 | int rc = dc->init(dev); | |
179 | if (rc < 0) { | |
180 | error_setg(err, "Device initialization failed."); | |
181 | return; | |
182 | } | |
5ab28c83 | 183 | } |
02e2da45 PB |
184 | } |
185 | ||
fe6c2117 AF |
186 | static void device_unrealize(DeviceState *dev, Error **errp) |
187 | { | |
188 | DeviceClass *dc = DEVICE_GET_CLASS(dev); | |
189 | ||
190 | if (dc->exit) { | |
191 | int rc = dc->exit(dev); | |
192 | if (rc < 0) { | |
193 | error_setg(errp, "Device exit failed."); | |
194 | return; | |
195 | } | |
196 | } | |
197 | } | |
198 | ||
4d2ffa08 JK |
199 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
200 | int required_for_version) | |
201 | { | |
7983c8a3 | 202 | assert(!dev->realized); |
4d2ffa08 JK |
203 | dev->instance_id_alias = alias_id; |
204 | dev->alias_required_for_version = required_for_version; | |
205 | } | |
206 | ||
56f9107e | 207 | void qdev_unplug(DeviceState *dev, Error **errp) |
3418bd25 | 208 | { |
6e008585 AL |
209 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
210 | ||
120dc38f | 211 | if (dev->parent_bus && !dev->parent_bus->allow_hotplug) { |
56f9107e LC |
212 | error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
213 | return; | |
3418bd25 | 214 | } |
6e008585 | 215 | assert(dc->unplug != NULL); |
593831de | 216 | |
0ac8ef71 AW |
217 | qdev_hot_removed = true; |
218 | ||
56f9107e LC |
219 | if (dc->unplug(dev) < 0) { |
220 | error_set(errp, QERR_UNDEFINED_ERROR); | |
221 | return; | |
222 | } | |
3418bd25 GH |
223 | } |
224 | ||
ec990eb6 AL |
225 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
226 | { | |
94afdadc | 227 | device_reset(dev); |
ec990eb6 AL |
228 | |
229 | return 0; | |
230 | } | |
231 | ||
b4694b7c IY |
232 | static int qbus_reset_one(BusState *bus, void *opaque) |
233 | { | |
0d936928 AL |
234 | BusClass *bc = BUS_GET_CLASS(bus); |
235 | if (bc->reset) { | |
236 | return bc->reset(bus); | |
b4694b7c IY |
237 | } |
238 | return 0; | |
239 | } | |
240 | ||
5af0a04b IY |
241 | void qdev_reset_all(DeviceState *dev) |
242 | { | |
243 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
244 | } | |
245 | ||
d0508c36 PB |
246 | void qbus_reset_all(BusState *bus) |
247 | { | |
248 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); | |
249 | } | |
250 | ||
80376c3f IY |
251 | void qbus_reset_all_fn(void *opaque) |
252 | { | |
253 | BusState *bus = opaque; | |
d0508c36 | 254 | qbus_reset_all(bus); |
80376c3f IY |
255 | } |
256 | ||
3418bd25 GH |
257 | /* can be used as ->unplug() callback for the simple cases */ |
258 | int qdev_simple_unplug_cb(DeviceState *dev) | |
259 | { | |
260 | /* just zap it */ | |
02a5c4c9 | 261 | object_unparent(OBJECT(dev)); |
3418bd25 GH |
262 | return 0; |
263 | } | |
264 | ||
3b29a101 MT |
265 | |
266 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
267 | returning an error value. This is okay during machine creation. |
268 | Don't use for hotplug, because there callers need to recover from | |
269 | failure. Exception: if you know the device's init() callback can't | |
270 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
271 | usable even then. But relying on the device implementation that | |
272 | way is somewhat unclean, and best avoided. */ | |
273 | void qdev_init_nofail(DeviceState *dev) | |
274 | { | |
7de3abe5 AL |
275 | const char *typename = object_get_typename(OBJECT(dev)); |
276 | ||
bd6c9a61 | 277 | if (qdev_init(dev) < 0) { |
7de3abe5 | 278 | error_report("Initialization of device %s failed", typename); |
bd6c9a61 MA |
279 | exit(1); |
280 | } | |
e23a1b33 MA |
281 | } |
282 | ||
3418bd25 GH |
283 | void qdev_machine_creation_done(void) |
284 | { | |
285 | /* | |
286 | * ok, initial machine setup is done, starting from now we can | |
287 | * only create hotpluggable devices | |
288 | */ | |
289 | qdev_hotplug = 1; | |
290 | } | |
291 | ||
0ac8ef71 AW |
292 | bool qdev_machine_modified(void) |
293 | { | |
294 | return qdev_hot_added || qdev_hot_removed; | |
295 | } | |
296 | ||
02e2da45 | 297 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 298 | { |
02e2da45 | 299 | return dev->parent_bus; |
aae9460e PB |
300 | } |
301 | ||
aae9460e PB |
302 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
303 | { | |
1e5b31e6 PC |
304 | dev->gpio_in = qemu_extend_irqs(dev->gpio_in, dev->num_gpio_in, handler, |
305 | dev, n); | |
306 | dev->num_gpio_in += n; | |
aae9460e PB |
307 | } |
308 | ||
309 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
310 | { | |
311 | assert(dev->num_gpio_out == 0); | |
312 | dev->num_gpio_out = n; | |
313 | dev->gpio_out = pins; | |
314 | } | |
315 | ||
316 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
317 | { | |
318 | assert(n >= 0 && n < dev->num_gpio_in); | |
319 | return dev->gpio_in[n]; | |
320 | } | |
321 | ||
322 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
323 | { | |
324 | assert(n >= 0 && n < dev->num_gpio_out); | |
325 | dev->gpio_out[n] = pin; | |
326 | } | |
327 | ||
02e2da45 | 328 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 329 | { |
02e2da45 | 330 | BusState *bus; |
4d6ae674 | 331 | |
72cf2d4f | 332 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 333 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 334 | return bus; |
4d6ae674 PB |
335 | } |
336 | } | |
337 | return NULL; | |
338 | } | |
339 | ||
81699d8a AL |
340 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
341 | qbus_walkerfn *busfn, void *opaque) | |
342 | { | |
0866aca1 | 343 | BusChild *kid; |
81699d8a AL |
344 | int err; |
345 | ||
346 | if (busfn) { | |
347 | err = busfn(bus, opaque); | |
348 | if (err) { | |
349 | return err; | |
350 | } | |
351 | } | |
352 | ||
0866aca1 AL |
353 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
354 | err = qdev_walk_children(kid->child, devfn, busfn, opaque); | |
81699d8a AL |
355 | if (err < 0) { |
356 | return err; | |
357 | } | |
358 | } | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
364 | qbus_walkerfn *busfn, void *opaque) | |
365 | { | |
366 | BusState *bus; | |
367 | int err; | |
368 | ||
369 | if (devfn) { | |
370 | err = devfn(dev, opaque); | |
371 | if (err) { | |
372 | return err; | |
373 | } | |
374 | } | |
375 | ||
376 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
377 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
378 | if (err < 0) { | |
379 | return err; | |
380 | } | |
381 | } | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
a2ee6b4f | 386 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 | 387 | { |
0866aca1 AL |
388 | BusChild *kid; |
389 | DeviceState *ret; | |
3418bd25 GH |
390 | BusState *child; |
391 | ||
0866aca1 AL |
392 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
393 | DeviceState *dev = kid->child; | |
394 | ||
395 | if (dev->id && strcmp(dev->id, id) == 0) { | |
3418bd25 | 396 | return dev; |
0866aca1 AL |
397 | } |
398 | ||
3418bd25 GH |
399 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
400 | ret = qdev_find_recursive(child, id); | |
401 | if (ret) { | |
402 | return ret; | |
403 | } | |
404 | } | |
405 | } | |
406 | return NULL; | |
407 | } | |
408 | ||
013e1182 | 409 | static void qbus_realize(BusState *bus, DeviceState *parent, const char *name) |
02e2da45 | 410 | { |
ac7d1ba6 | 411 | const char *typename = object_get_typename(OBJECT(bus)); |
d271de9f GH |
412 | char *buf; |
413 | int i,len; | |
02e2da45 | 414 | |
013e1182 PB |
415 | bus->parent = parent; |
416 | ||
417 | if (name) { | |
418 | bus->name = g_strdup(name); | |
ac7d1ba6 | 419 | } else if (bus->parent && bus->parent->id) { |
d271de9f | 420 | /* parent device has id -> use it for bus name */ |
ac7d1ba6 | 421 | len = strlen(bus->parent->id) + 16; |
7267c094 | 422 | buf = g_malloc(len); |
ac7d1ba6 | 423 | snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus); |
d271de9f GH |
424 | bus->name = buf; |
425 | } else { | |
426 | /* no id -> use lowercase bus type for bus name */ | |
0d936928 | 427 | len = strlen(typename) + 16; |
7267c094 | 428 | buf = g_malloc(len); |
0d936928 | 429 | len = snprintf(buf, len, "%s.%d", typename, |
ac7d1ba6 | 430 | bus->parent ? bus->parent->num_child_bus : 0); |
d271de9f | 431 | for (i = 0; i < len; i++) |
bb87ece5 | 432 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
433 | bus->name = buf; |
434 | } | |
435 | ||
ac7d1ba6 AL |
436 | if (bus->parent) { |
437 | QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); | |
438 | bus->parent->num_child_bus++; | |
439 | object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL); | |
b09995ae | 440 | object_unref(OBJECT(bus)); |
8185d216 | 441 | } else if (bus != sysbus_get_default()) { |
80376c3f IY |
442 | /* TODO: once all bus devices are qdevified, |
443 | only reset handler for main_system_bus should be registered here. */ | |
444 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 445 | } |
cd739fb6 GH |
446 | } |
447 | ||
6853d27a PB |
448 | static void bus_unparent(Object *obj) |
449 | { | |
450 | BusState *bus = BUS(obj); | |
451 | BusChild *kid; | |
452 | ||
453 | while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { | |
454 | DeviceState *dev = kid->child; | |
02a5c4c9 | 455 | object_unparent(OBJECT(dev)); |
6853d27a PB |
456 | } |
457 | if (bus->parent) { | |
458 | QLIST_REMOVE(bus, sibling); | |
459 | bus->parent->num_child_bus--; | |
460 | bus->parent = NULL; | |
461 | } else { | |
462 | assert(bus != sysbus_get_default()); /* main_system_bus is never freed */ | |
463 | qemu_unregister_reset(qbus_reset_all_fn, bus); | |
464 | } | |
465 | } | |
466 | ||
fb17dfe0 | 467 | void qbus_create_inplace(void *bus, size_t size, const char *typename, |
0d936928 | 468 | DeviceState *parent, const char *name) |
cd739fb6 | 469 | { |
213f0c4f | 470 | object_initialize(bus, size, typename); |
013e1182 | 471 | qbus_realize(bus, parent, name); |
02e2da45 | 472 | } |
cae4956e | 473 | |
0d936928 | 474 | BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
2da8bb92 | 475 | { |
cd739fb6 GH |
476 | BusState *bus; |
477 | ||
0d936928 | 478 | bus = BUS(object_new(typename)); |
013e1182 | 479 | qbus_realize(bus, parent, name); |
ac7d1ba6 | 480 | |
02e2da45 | 481 | return bus; |
2da8bb92 IY |
482 | } |
483 | ||
131ec1bd GH |
484 | void qbus_free(BusState *bus) |
485 | { | |
dc7389b7 | 486 | object_unparent(OBJECT(bus)); |
0d936928 AL |
487 | } |
488 | ||
489 | static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) | |
490 | { | |
491 | BusClass *bc = BUS_GET_CLASS(bus); | |
492 | ||
493 | if (bc->get_fw_dev_path) { | |
494 | return bc->get_fw_dev_path(dev); | |
131ec1bd | 495 | } |
0d936928 AL |
496 | |
497 | return NULL; | |
131ec1bd GH |
498 | } |
499 | ||
1ca4d09a GN |
500 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
501 | { | |
502 | int l = 0; | |
503 | ||
504 | if (dev && dev->parent_bus) { | |
505 | char *d; | |
506 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
0d936928 AL |
507 | d = bus_get_fw_dev_path(dev->parent_bus, dev); |
508 | if (d) { | |
1ca4d09a | 509 | l += snprintf(p + l, size - l, "%s", d); |
7267c094 | 510 | g_free(d); |
1ca4d09a | 511 | } else { |
bbfa18fc | 512 | return l; |
1ca4d09a GN |
513 | } |
514 | } | |
515 | l += snprintf(p + l , size - l, "/"); | |
516 | ||
517 | return l; | |
518 | } | |
519 | ||
520 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
521 | { | |
522 | char path[128]; | |
523 | int l; | |
524 | ||
525 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
526 | ||
527 | path[l-1] = '\0'; | |
528 | ||
a5cf8262 | 529 | return g_strdup(path); |
1ca4d09a | 530 | } |
85ed303b | 531 | |
09e5ab63 | 532 | char *qdev_get_dev_path(DeviceState *dev) |
85ed303b | 533 | { |
0d936928 | 534 | BusClass *bc; |
09e5ab63 AL |
535 | |
536 | if (!dev || !dev->parent_bus) { | |
537 | return NULL; | |
538 | } | |
539 | ||
0d936928 AL |
540 | bc = BUS_GET_CLASS(dev->parent_bus); |
541 | if (bc->get_dev_path) { | |
542 | return bc->get_dev_path(dev); | |
09e5ab63 AL |
543 | } |
544 | ||
545 | return NULL; | |
44677ded | 546 | } |
a5296ca9 AL |
547 | |
548 | /** | |
549 | * Legacy property handling | |
550 | */ | |
551 | ||
57c9fafe | 552 | static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
553 | const char *name, Error **errp) |
554 | { | |
57c9fafe | 555 | DeviceState *dev = DEVICE(obj); |
a5296ca9 AL |
556 | Property *prop = opaque; |
557 | ||
e3cb6ba6 PB |
558 | char buffer[1024]; |
559 | char *ptr = buffer; | |
a5296ca9 | 560 | |
e3cb6ba6 PB |
561 | prop->info->print(dev, prop, buffer, sizeof(buffer)); |
562 | visit_type_str(v, &ptr, name, errp); | |
a5296ca9 AL |
563 | } |
564 | ||
57c9fafe | 565 | static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
566 | const char *name, Error **errp) |
567 | { | |
57c9fafe | 568 | DeviceState *dev = DEVICE(obj); |
a5296ca9 | 569 | Property *prop = opaque; |
e3cb6ba6 PB |
570 | Error *local_err = NULL; |
571 | char *ptr = NULL; | |
572 | int ret; | |
a5296ca9 | 573 | |
7983c8a3 | 574 | if (dev->realized) { |
b000dfbd | 575 | qdev_prop_set_after_realize(dev, name, errp); |
a5296ca9 AL |
576 | return; |
577 | } | |
578 | ||
e3cb6ba6 PB |
579 | visit_type_str(v, &ptr, name, &local_err); |
580 | if (local_err) { | |
581 | error_propagate(errp, local_err); | |
582 | return; | |
583 | } | |
a5296ca9 | 584 | |
e3cb6ba6 | 585 | ret = prop->info->parse(dev, prop, ptr); |
7db4c4e8 | 586 | error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
e3cb6ba6 | 587 | g_free(ptr); |
a5296ca9 AL |
588 | } |
589 | ||
590 | /** | |
591 | * @qdev_add_legacy_property - adds a legacy property | |
592 | * | |
593 | * Do not use this is new code! Properties added through this interface will | |
ca2cc788 | 594 | * be given names and types in the "legacy" namespace. |
a5296ca9 | 595 | * |
68ee3569 PB |
596 | * Legacy properties are string versions of other OOM properties. The format |
597 | * of the string depends on the property type. | |
a5296ca9 AL |
598 | */ |
599 | void qdev_property_add_legacy(DeviceState *dev, Property *prop, | |
600 | Error **errp) | |
601 | { | |
ca2cc788 | 602 | gchar *name, *type; |
a5296ca9 | 603 | |
f3be016d AL |
604 | /* Register pointer properties as legacy properties */ |
605 | if (!prop->info->print && !prop->info->parse && | |
606 | (prop->info->set || prop->info->get)) { | |
68ee3569 PB |
607 | return; |
608 | } | |
f3be016d | 609 | |
ca2cc788 | 610 | name = g_strdup_printf("legacy-%s", prop->name); |
cafe5bdb PB |
611 | type = g_strdup_printf("legacy<%s>", |
612 | prop->info->legacy_name ?: prop->info->name); | |
a5296ca9 | 613 | |
57c9fafe | 614 | object_property_add(OBJECT(dev), name, type, |
68ee3569 PB |
615 | prop->info->print ? qdev_get_legacy_property : prop->info->get, |
616 | prop->info->parse ? qdev_set_legacy_property : prop->info->set, | |
57c9fafe AL |
617 | NULL, |
618 | prop, errp); | |
a5296ca9 AL |
619 | |
620 | g_free(type); | |
ca2cc788 PB |
621 | g_free(name); |
622 | } | |
623 | ||
624 | /** | |
625 | * @qdev_property_add_static - add a @Property to a device. | |
626 | * | |
627 | * Static properties access data in a struct. The actual type of the | |
628 | * property and the field depends on the property type. | |
629 | */ | |
630 | void qdev_property_add_static(DeviceState *dev, Property *prop, | |
631 | Error **errp) | |
632 | { | |
fdae245f PB |
633 | Error *local_err = NULL; |
634 | Object *obj = OBJECT(dev); | |
635 | ||
d822979b PB |
636 | /* |
637 | * TODO qdev_prop_ptr does not have getters or setters. It must | |
638 | * go now that it can be replaced with links. The test should be | |
639 | * removed along with it: all static properties are read/write. | |
640 | */ | |
641 | if (!prop->info->get && !prop->info->set) { | |
642 | return; | |
643 | } | |
644 | ||
fdae245f | 645 | object_property_add(obj, prop->name, prop->info->name, |
57c9fafe | 646 | prop->info->get, prop->info->set, |
dd0ba250 | 647 | prop->info->release, |
fdae245f PB |
648 | prop, &local_err); |
649 | ||
650 | if (local_err) { | |
651 | error_propagate(errp, local_err); | |
652 | return; | |
653 | } | |
654 | if (prop->qtype == QTYPE_NONE) { | |
655 | return; | |
656 | } | |
657 | ||
658 | if (prop->qtype == QTYPE_QBOOL) { | |
659 | object_property_set_bool(obj, prop->defval, prop->name, &local_err); | |
660 | } else if (prop->info->enum_table) { | |
661 | object_property_set_str(obj, prop->info->enum_table[prop->defval], | |
662 | prop->name, &local_err); | |
663 | } else if (prop->qtype == QTYPE_QINT) { | |
664 | object_property_set_int(obj, prop->defval, prop->name, &local_err); | |
665 | } | |
666 | assert_no_error(local_err); | |
6a146eba | 667 | } |
1de81d28 | 668 | |
249d4172 AF |
669 | static bool device_get_realized(Object *obj, Error **err) |
670 | { | |
671 | DeviceState *dev = DEVICE(obj); | |
672 | return dev->realized; | |
673 | } | |
674 | ||
675 | static void device_set_realized(Object *obj, bool value, Error **err) | |
676 | { | |
677 | DeviceState *dev = DEVICE(obj); | |
678 | DeviceClass *dc = DEVICE_GET_CLASS(dev); | |
679 | Error *local_err = NULL; | |
680 | ||
681 | if (value && !dev->realized) { | |
249d4172 AF |
682 | if (!obj->parent && local_err == NULL) { |
683 | static int unattached_count; | |
684 | gchar *name = g_strdup_printf("device[%d]", unattached_count++); | |
685 | ||
686 | object_property_add_child(container_get(qdev_get_machine(), | |
687 | "/unattached"), | |
688 | name, obj, &local_err); | |
689 | g_free(name); | |
690 | } | |
691 | ||
a7ddba52 IM |
692 | if (dc->realize) { |
693 | dc->realize(dev, &local_err); | |
694 | } | |
695 | ||
249d4172 AF |
696 | if (qdev_get_vmsd(dev) && local_err == NULL) { |
697 | vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, | |
698 | dev->instance_id_alias, | |
699 | dev->alias_required_for_version); | |
700 | } | |
701 | if (dev->hotplugged && local_err == NULL) { | |
702 | device_reset(dev); | |
703 | } | |
704 | } else if (!value && dev->realized) { | |
fe6c2117 AF |
705 | if (qdev_get_vmsd(dev)) { |
706 | vmstate_unregister(dev, qdev_get_vmsd(dev), dev); | |
707 | } | |
249d4172 AF |
708 | if (dc->unrealize) { |
709 | dc->unrealize(dev, &local_err); | |
710 | } | |
711 | } | |
712 | ||
713 | if (local_err != NULL) { | |
714 | error_propagate(err, local_err); | |
715 | return; | |
716 | } | |
717 | ||
718 | dev->realized = value; | |
719 | } | |
720 | ||
9674bfe4 AL |
721 | static void device_initfn(Object *obj) |
722 | { | |
723 | DeviceState *dev = DEVICE(obj); | |
bce54474 | 724 | ObjectClass *class; |
9674bfe4 | 725 | Property *prop; |
e769bdc2 | 726 | Error *err = NULL; |
9674bfe4 AL |
727 | |
728 | if (qdev_hotplug) { | |
729 | dev->hotplugged = 1; | |
730 | qdev_hot_added = true; | |
731 | } | |
732 | ||
733 | dev->instance_id_alias = -1; | |
7983c8a3 | 734 | dev->realized = false; |
9674bfe4 | 735 | |
249d4172 AF |
736 | object_property_add_bool(obj, "realized", |
737 | device_get_realized, device_set_realized, NULL); | |
738 | ||
bce54474 PB |
739 | class = object_get_class(OBJECT(dev)); |
740 | do { | |
741 | for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { | |
e769bdc2 PM |
742 | qdev_property_add_legacy(dev, prop, &err); |
743 | assert_no_error(err); | |
744 | qdev_property_add_static(dev, prop, &err); | |
745 | assert_no_error(err); | |
bce54474 | 746 | } |
bce54474 PB |
747 | class = object_class_get_parent(class); |
748 | } while (class != object_class_by_name(TYPE_DEVICE)); | |
b1fe9bcb AF |
749 | if (err != NULL) { |
750 | qerror_report_err(err); | |
751 | error_free(err); | |
752 | exit(1); | |
753 | } | |
9674bfe4 | 754 | |
f968fc68 | 755 | object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS, |
e769bdc2 PM |
756 | (Object **)&dev->parent_bus, &err); |
757 | assert_no_error(err); | |
9674bfe4 AL |
758 | } |
759 | ||
99a0b036 EH |
760 | static void device_post_init(Object *obj) |
761 | { | |
762 | DeviceState *dev = DEVICE(obj); | |
763 | Error *err = NULL; | |
764 | ||
765 | qdev_prop_set_globals(dev, &err); | |
766 | assert_no_error(err); | |
767 | } | |
768 | ||
60adba37 AL |
769 | /* Unlink device from bus and free the structure. */ |
770 | static void device_finalize(Object *obj) | |
771 | { | |
772 | DeviceState *dev = DEVICE(obj); | |
06f7f2bb PB |
773 | if (dev->opts) { |
774 | qemu_opts_del(dev->opts); | |
60adba37 | 775 | } |
60adba37 AL |
776 | } |
777 | ||
bce54474 PB |
778 | static void device_class_base_init(ObjectClass *class, void *data) |
779 | { | |
780 | DeviceClass *klass = DEVICE_CLASS(class); | |
781 | ||
782 | /* We explicitly look up properties in the superclasses, | |
783 | * so do not propagate them to the subclasses. | |
784 | */ | |
785 | klass->props = NULL; | |
60adba37 AL |
786 | } |
787 | ||
5d5b24d0 | 788 | static void device_unparent(Object *obj) |
667d22d1 PB |
789 | { |
790 | DeviceState *dev = DEVICE(obj); | |
06f7f2bb | 791 | BusState *bus; |
0402a5d6 | 792 | QObject *event_data; |
b1ee5829 | 793 | bool have_realized = dev->realized; |
667d22d1 | 794 | |
06f7f2bb PB |
795 | while (dev->num_child_bus) { |
796 | bus = QLIST_FIRST(&dev->child_bus); | |
797 | qbus_free(bus); | |
798 | } | |
799 | if (dev->realized) { | |
fe6c2117 | 800 | object_property_set_bool(obj, false, "realized", NULL); |
06f7f2bb PB |
801 | } |
802 | if (dev->parent_bus) { | |
5d5b24d0 | 803 | bus_remove_child(dev->parent_bus, dev); |
62d7ba66 PB |
804 | object_unref(OBJECT(dev->parent_bus)); |
805 | dev->parent_bus = NULL; | |
5d5b24d0 | 806 | } |
0402a5d6 | 807 | |
b1ee5829 AL |
808 | /* Only send event if the device had been completely realized */ |
809 | if (have_realized) { | |
810 | gchar *path = object_get_canonical_path(OBJECT(dev)); | |
811 | ||
812 | if (dev->id) { | |
813 | event_data = qobject_from_jsonf("{ 'device': %s, 'path': %s }", | |
814 | dev->id, path); | |
815 | } else { | |
816 | event_data = qobject_from_jsonf("{ 'path': %s }", path); | |
817 | } | |
818 | monitor_protocol_event(QEVENT_DEVICE_DELETED, event_data); | |
819 | qobject_decref(event_data); | |
820 | g_free(path); | |
0402a5d6 | 821 | } |
667d22d1 PB |
822 | } |
823 | ||
824 | static void device_class_init(ObjectClass *class, void *data) | |
825 | { | |
249d4172 AF |
826 | DeviceClass *dc = DEVICE_CLASS(class); |
827 | ||
5d5b24d0 | 828 | class->unparent = device_unparent; |
249d4172 | 829 | dc->realize = device_realize; |
fe6c2117 | 830 | dc->unrealize = device_unrealize; |
667d22d1 PB |
831 | } |
832 | ||
94afdadc AL |
833 | void device_reset(DeviceState *dev) |
834 | { | |
835 | DeviceClass *klass = DEVICE_GET_CLASS(dev); | |
836 | ||
837 | if (klass->reset) { | |
838 | klass->reset(dev); | |
839 | } | |
840 | } | |
841 | ||
f05f6b4a PB |
842 | Object *qdev_get_machine(void) |
843 | { | |
844 | static Object *dev; | |
845 | ||
846 | if (dev == NULL) { | |
dfe47e70 | 847 | dev = container_get(object_get_root(), "/machine"); |
f05f6b4a PB |
848 | } |
849 | ||
850 | return dev; | |
851 | } | |
852 | ||
8c43a6f0 | 853 | static const TypeInfo device_type_info = { |
32fea402 AL |
854 | .name = TYPE_DEVICE, |
855 | .parent = TYPE_OBJECT, | |
856 | .instance_size = sizeof(DeviceState), | |
9674bfe4 | 857 | .instance_init = device_initfn, |
99a0b036 | 858 | .instance_post_init = device_post_init, |
60adba37 | 859 | .instance_finalize = device_finalize, |
bce54474 | 860 | .class_base_init = device_class_base_init, |
667d22d1 | 861 | .class_init = device_class_init, |
32fea402 AL |
862 | .abstract = true, |
863 | .class_size = sizeof(DeviceClass), | |
864 | }; | |
865 | ||
ac7d1ba6 AL |
866 | static void qbus_initfn(Object *obj) |
867 | { | |
868 | BusState *bus = BUS(obj); | |
869 | ||
870 | QTAILQ_INIT(&bus->children); | |
871 | } | |
872 | ||
bbfa18fc AK |
873 | static char *default_bus_get_fw_dev_path(DeviceState *dev) |
874 | { | |
875 | return g_strdup(object_get_typename(OBJECT(dev))); | |
876 | } | |
877 | ||
6853d27a PB |
878 | static void bus_class_init(ObjectClass *class, void *data) |
879 | { | |
bbfa18fc AK |
880 | BusClass *bc = BUS_CLASS(class); |
881 | ||
6853d27a | 882 | class->unparent = bus_unparent; |
bbfa18fc | 883 | bc->get_fw_dev_path = default_bus_get_fw_dev_path; |
6853d27a PB |
884 | } |
885 | ||
ac7d1ba6 AL |
886 | static void qbus_finalize(Object *obj) |
887 | { | |
888 | BusState *bus = BUS(obj); | |
ac7d1ba6 | 889 | |
ac7d1ba6 AL |
890 | g_free((char *)bus->name); |
891 | } | |
892 | ||
0d936928 AL |
893 | static const TypeInfo bus_info = { |
894 | .name = TYPE_BUS, | |
895 | .parent = TYPE_OBJECT, | |
896 | .instance_size = sizeof(BusState), | |
897 | .abstract = true, | |
898 | .class_size = sizeof(BusClass), | |
ac7d1ba6 AL |
899 | .instance_init = qbus_initfn, |
900 | .instance_finalize = qbus_finalize, | |
6853d27a | 901 | .class_init = bus_class_init, |
0d936928 AL |
902 | }; |
903 | ||
83f7d43a | 904 | static void qdev_register_types(void) |
32fea402 | 905 | { |
0d936928 | 906 | type_register_static(&bus_info); |
32fea402 AL |
907 | type_register_static(&device_type_info); |
908 | } | |
909 | ||
83f7d43a | 910 | type_init(qdev_register_types) |