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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 | |
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 PM |
110 | if (bus) { |
111 | hw_error("Unknown device '%s' for bus '%s'\n", name, | |
0d936928 | 112 | object_get_typename(OBJECT(bus))); |
e92714c7 PM |
113 | } else { |
114 | hw_error("Unknown device '%s' for default sysbus\n", name); | |
115 | } | |
0bcdeda7 BS |
116 | } |
117 | ||
118 | return dev; | |
119 | } | |
120 | ||
da57febf | 121 | DeviceState *qdev_try_create(BusState *bus, const char *type) |
aae9460e | 122 | { |
9fbe6127 AL |
123 | DeviceState *dev; |
124 | ||
da57febf | 125 | if (object_class_by_name(type) == NULL) { |
4ed658ca AF |
126 | return NULL; |
127 | } | |
da57febf | 128 | dev = DEVICE(object_new(type)); |
9fbe6127 AL |
129 | if (!dev) { |
130 | return NULL; | |
131 | } | |
132 | ||
10c4c98a | 133 | if (!bus) { |
68694897 | 134 | bus = sysbus_get_default(); |
10c4c98a GH |
135 | } |
136 | ||
9fbe6127 | 137 | qdev_set_parent_bus(dev, bus); |
9fbe6127 AL |
138 | |
139 | return dev; | |
aae9460e PB |
140 | } |
141 | ||
142 | /* Initialize a device. Device properties should be set before calling | |
143 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
144 | calling this function. |
145 | On failure, destroy the device and return negative value. | |
146 | Return 0 on success. */ | |
81a322d4 | 147 | int qdev_init(DeviceState *dev) |
aae9460e | 148 | { |
6e008585 | 149 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
959f733a GH |
150 | int rc; |
151 | ||
131ec1bd | 152 | assert(dev->state == DEV_STATE_CREATED); |
6e008585 | 153 | |
d307af79 | 154 | rc = dc->init(dev); |
18cfeb52 MA |
155 | if (rc < 0) { |
156 | qdev_free(dev); | |
959f733a | 157 | return rc; |
18cfeb52 | 158 | } |
da57febf PB |
159 | |
160 | if (!OBJECT(dev)->parent) { | |
161 | static int unattached_count = 0; | |
162 | gchar *name = g_strdup_printf("device[%d]", unattached_count++); | |
163 | ||
dfe47e70 AF |
164 | object_property_add_child(container_get(qdev_get_machine(), |
165 | "/unattached"), | |
166 | name, OBJECT(dev), NULL); | |
da57febf PB |
167 | g_free(name); |
168 | } | |
169 | ||
6e008585 AL |
170 | if (qdev_get_vmsd(dev)) { |
171 | vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, | |
4d2ffa08 JK |
172 | dev->instance_id_alias, |
173 | dev->alias_required_for_version); | |
174 | } | |
131ec1bd | 175 | dev->state = DEV_STATE_INITIALIZED; |
94afdadc AL |
176 | if (dev->hotplugged) { |
177 | device_reset(dev); | |
5ab28c83 | 178 | } |
959f733a | 179 | return 0; |
02e2da45 PB |
180 | } |
181 | ||
4d2ffa08 JK |
182 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
183 | int required_for_version) | |
184 | { | |
185 | assert(dev->state == DEV_STATE_CREATED); | |
186 | dev->instance_id_alias = alias_id; | |
187 | dev->alias_required_for_version = required_for_version; | |
188 | } | |
189 | ||
56f9107e | 190 | void qdev_unplug(DeviceState *dev, Error **errp) |
3418bd25 | 191 | { |
6e008585 AL |
192 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
193 | ||
3418bd25 | 194 | if (!dev->parent_bus->allow_hotplug) { |
56f9107e LC |
195 | error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
196 | return; | |
3418bd25 | 197 | } |
6e008585 | 198 | assert(dc->unplug != NULL); |
593831de | 199 | |
0ac8ef71 AW |
200 | qdev_hot_removed = true; |
201 | ||
56f9107e LC |
202 | if (dc->unplug(dev) < 0) { |
203 | error_set(errp, QERR_UNDEFINED_ERROR); | |
204 | return; | |
205 | } | |
3418bd25 GH |
206 | } |
207 | ||
ec990eb6 AL |
208 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
209 | { | |
94afdadc | 210 | device_reset(dev); |
ec990eb6 AL |
211 | |
212 | return 0; | |
213 | } | |
214 | ||
b4694b7c IY |
215 | static int qbus_reset_one(BusState *bus, void *opaque) |
216 | { | |
0d936928 AL |
217 | BusClass *bc = BUS_GET_CLASS(bus); |
218 | if (bc->reset) { | |
219 | return bc->reset(bus); | |
b4694b7c IY |
220 | } |
221 | return 0; | |
222 | } | |
223 | ||
5af0a04b IY |
224 | void qdev_reset_all(DeviceState *dev) |
225 | { | |
226 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
227 | } | |
228 | ||
80376c3f IY |
229 | void qbus_reset_all_fn(void *opaque) |
230 | { | |
231 | BusState *bus = opaque; | |
f530cce3 | 232 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); |
80376c3f IY |
233 | } |
234 | ||
3418bd25 GH |
235 | /* can be used as ->unplug() callback for the simple cases */ |
236 | int qdev_simple_unplug_cb(DeviceState *dev) | |
237 | { | |
238 | /* just zap it */ | |
239 | qdev_free(dev); | |
240 | return 0; | |
241 | } | |
242 | ||
3b29a101 MT |
243 | |
244 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
245 | returning an error value. This is okay during machine creation. |
246 | Don't use for hotplug, because there callers need to recover from | |
247 | failure. Exception: if you know the device's init() callback can't | |
248 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
249 | usable even then. But relying on the device implementation that | |
250 | way is somewhat unclean, and best avoided. */ | |
251 | void qdev_init_nofail(DeviceState *dev) | |
252 | { | |
7de3abe5 AL |
253 | const char *typename = object_get_typename(OBJECT(dev)); |
254 | ||
bd6c9a61 | 255 | if (qdev_init(dev) < 0) { |
7de3abe5 | 256 | error_report("Initialization of device %s failed", typename); |
bd6c9a61 MA |
257 | exit(1); |
258 | } | |
e23a1b33 MA |
259 | } |
260 | ||
02e2da45 PB |
261 | /* Unlink device from bus and free the structure. */ |
262 | void qdev_free(DeviceState *dev) | |
263 | { | |
32fea402 | 264 | object_delete(OBJECT(dev)); |
aae9460e PB |
265 | } |
266 | ||
3418bd25 GH |
267 | void qdev_machine_creation_done(void) |
268 | { | |
269 | /* | |
270 | * ok, initial machine setup is done, starting from now we can | |
271 | * only create hotpluggable devices | |
272 | */ | |
273 | qdev_hotplug = 1; | |
274 | } | |
275 | ||
0ac8ef71 AW |
276 | bool qdev_machine_modified(void) |
277 | { | |
278 | return qdev_hot_added || qdev_hot_removed; | |
279 | } | |
280 | ||
02e2da45 | 281 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 282 | { |
02e2da45 | 283 | return dev->parent_bus; |
aae9460e PB |
284 | } |
285 | ||
aae9460e PB |
286 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
287 | { | |
1e5b31e6 PC |
288 | dev->gpio_in = qemu_extend_irqs(dev->gpio_in, dev->num_gpio_in, handler, |
289 | dev, n); | |
290 | dev->num_gpio_in += n; | |
aae9460e PB |
291 | } |
292 | ||
293 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
294 | { | |
295 | assert(dev->num_gpio_out == 0); | |
296 | dev->num_gpio_out = n; | |
297 | dev->gpio_out = pins; | |
298 | } | |
299 | ||
300 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
301 | { | |
302 | assert(n >= 0 && n < dev->num_gpio_in); | |
303 | return dev->gpio_in[n]; | |
304 | } | |
305 | ||
306 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
307 | { | |
308 | assert(n >= 0 && n < dev->num_gpio_out); | |
309 | dev->gpio_out[n] = pin; | |
310 | } | |
311 | ||
ed16ab5a GH |
312 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) |
313 | { | |
6eed1856 | 314 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); |
ed16ab5a GH |
315 | if (nd->netdev) |
316 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
75422b0d | 317 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && |
89bfe000 | 318 | object_property_find(OBJECT(dev), "vectors", NULL)) { |
97b15621 GH |
319 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); |
320 | } | |
48e2faf2 | 321 | nd->instantiated = 1; |
ed16ab5a GH |
322 | } |
323 | ||
02e2da45 | 324 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 325 | { |
02e2da45 | 326 | BusState *bus; |
4d6ae674 | 327 | |
72cf2d4f | 328 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 329 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 330 | return bus; |
4d6ae674 PB |
331 | } |
332 | } | |
333 | return NULL; | |
334 | } | |
335 | ||
81699d8a AL |
336 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
337 | qbus_walkerfn *busfn, void *opaque) | |
338 | { | |
0866aca1 | 339 | BusChild *kid; |
81699d8a AL |
340 | int err; |
341 | ||
342 | if (busfn) { | |
343 | err = busfn(bus, opaque); | |
344 | if (err) { | |
345 | return err; | |
346 | } | |
347 | } | |
348 | ||
0866aca1 AL |
349 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
350 | err = qdev_walk_children(kid->child, devfn, busfn, opaque); | |
81699d8a AL |
351 | if (err < 0) { |
352 | return err; | |
353 | } | |
354 | } | |
355 | ||
356 | return 0; | |
357 | } | |
358 | ||
359 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
360 | qbus_walkerfn *busfn, void *opaque) | |
361 | { | |
362 | BusState *bus; | |
363 | int err; | |
364 | ||
365 | if (devfn) { | |
366 | err = devfn(dev, opaque); | |
367 | if (err) { | |
368 | return err; | |
369 | } | |
370 | } | |
371 | ||
372 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
373 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
374 | if (err < 0) { | |
375 | return err; | |
376 | } | |
377 | } | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
a2ee6b4f | 382 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 | 383 | { |
0866aca1 AL |
384 | BusChild *kid; |
385 | DeviceState *ret; | |
3418bd25 GH |
386 | BusState *child; |
387 | ||
0866aca1 AL |
388 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
389 | DeviceState *dev = kid->child; | |
390 | ||
391 | if (dev->id && strcmp(dev->id, id) == 0) { | |
3418bd25 | 392 | return dev; |
0866aca1 AL |
393 | } |
394 | ||
3418bd25 GH |
395 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
396 | ret = qdev_find_recursive(child, id); | |
397 | if (ret) { | |
398 | return ret; | |
399 | } | |
400 | } | |
401 | } | |
402 | return NULL; | |
403 | } | |
404 | ||
ac7d1ba6 | 405 | static void qbus_realize(BusState *bus) |
02e2da45 | 406 | { |
ac7d1ba6 | 407 | const char *typename = object_get_typename(OBJECT(bus)); |
d271de9f GH |
408 | char *buf; |
409 | int i,len; | |
02e2da45 | 410 | |
ac7d1ba6 | 411 | if (bus->name) { |
d271de9f | 412 | /* use supplied name */ |
ac7d1ba6 | 413 | } else if (bus->parent && bus->parent->id) { |
d271de9f | 414 | /* parent device has id -> use it for bus name */ |
ac7d1ba6 | 415 | len = strlen(bus->parent->id) + 16; |
7267c094 | 416 | buf = g_malloc(len); |
ac7d1ba6 | 417 | snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus); |
d271de9f GH |
418 | bus->name = buf; |
419 | } else { | |
420 | /* no id -> use lowercase bus type for bus name */ | |
0d936928 | 421 | len = strlen(typename) + 16; |
7267c094 | 422 | buf = g_malloc(len); |
0d936928 | 423 | len = snprintf(buf, len, "%s.%d", typename, |
ac7d1ba6 | 424 | bus->parent ? bus->parent->num_child_bus : 0); |
d271de9f | 425 | for (i = 0; i < len; i++) |
bb87ece5 | 426 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
427 | bus->name = buf; |
428 | } | |
429 | ||
ac7d1ba6 AL |
430 | if (bus->parent) { |
431 | QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); | |
432 | bus->parent->num_child_bus++; | |
433 | object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL); | |
8185d216 | 434 | } else if (bus != sysbus_get_default()) { |
80376c3f IY |
435 | /* TODO: once all bus devices are qdevified, |
436 | only reset handler for main_system_bus should be registered here. */ | |
437 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 438 | } |
cd739fb6 GH |
439 | } |
440 | ||
0d936928 AL |
441 | void qbus_create_inplace(BusState *bus, const char *typename, |
442 | DeviceState *parent, const char *name) | |
cd739fb6 | 443 | { |
0d936928 | 444 | object_initialize(bus, typename); |
cd739fb6 | 445 | |
ac7d1ba6 AL |
446 | bus->parent = parent; |
447 | bus->name = name ? g_strdup(name) : NULL; | |
448 | qbus_realize(bus); | |
02e2da45 | 449 | } |
cae4956e | 450 | |
0d936928 | 451 | BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
2da8bb92 | 452 | { |
cd739fb6 GH |
453 | BusState *bus; |
454 | ||
0d936928 AL |
455 | bus = BUS(object_new(typename)); |
456 | bus->qom_allocated = true; | |
ac7d1ba6 AL |
457 | |
458 | bus->parent = parent; | |
459 | bus->name = name ? g_strdup(name) : NULL; | |
460 | qbus_realize(bus); | |
461 | ||
02e2da45 | 462 | return bus; |
2da8bb92 IY |
463 | } |
464 | ||
131ec1bd GH |
465 | void qbus_free(BusState *bus) |
466 | { | |
0d936928 AL |
467 | if (bus->qom_allocated) { |
468 | object_delete(OBJECT(bus)); | |
80376c3f | 469 | } else { |
0d936928 AL |
470 | object_finalize(OBJECT(bus)); |
471 | if (bus->glib_allocated) { | |
472 | g_free(bus); | |
473 | } | |
131ec1bd | 474 | } |
0d936928 AL |
475 | } |
476 | ||
477 | static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) | |
478 | { | |
479 | BusClass *bc = BUS_GET_CLASS(bus); | |
480 | ||
481 | if (bc->get_fw_dev_path) { | |
482 | return bc->get_fw_dev_path(dev); | |
131ec1bd | 483 | } |
0d936928 AL |
484 | |
485 | return NULL; | |
131ec1bd GH |
486 | } |
487 | ||
1ca4d09a GN |
488 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
489 | { | |
490 | int l = 0; | |
491 | ||
492 | if (dev && dev->parent_bus) { | |
493 | char *d; | |
494 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
0d936928 AL |
495 | d = bus_get_fw_dev_path(dev->parent_bus, dev); |
496 | if (d) { | |
1ca4d09a | 497 | l += snprintf(p + l, size - l, "%s", d); |
7267c094 | 498 | g_free(d); |
1ca4d09a | 499 | } else { |
f79f2bfc | 500 | l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev))); |
1ca4d09a GN |
501 | } |
502 | } | |
503 | l += snprintf(p + l , size - l, "/"); | |
504 | ||
505 | return l; | |
506 | } | |
507 | ||
508 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
509 | { | |
510 | char path[128]; | |
511 | int l; | |
512 | ||
513 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
514 | ||
515 | path[l-1] = '\0'; | |
516 | ||
a5cf8262 | 517 | return g_strdup(path); |
1ca4d09a | 518 | } |
85ed303b | 519 | |
09e5ab63 | 520 | char *qdev_get_dev_path(DeviceState *dev) |
85ed303b | 521 | { |
0d936928 | 522 | BusClass *bc; |
09e5ab63 AL |
523 | |
524 | if (!dev || !dev->parent_bus) { | |
525 | return NULL; | |
526 | } | |
527 | ||
0d936928 AL |
528 | bc = BUS_GET_CLASS(dev->parent_bus); |
529 | if (bc->get_dev_path) { | |
530 | return bc->get_dev_path(dev); | |
09e5ab63 AL |
531 | } |
532 | ||
533 | return NULL; | |
44677ded | 534 | } |
a5296ca9 AL |
535 | |
536 | /** | |
537 | * Legacy property handling | |
538 | */ | |
539 | ||
57c9fafe | 540 | static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
541 | const char *name, Error **errp) |
542 | { | |
57c9fafe | 543 | DeviceState *dev = DEVICE(obj); |
a5296ca9 AL |
544 | Property *prop = opaque; |
545 | ||
e3cb6ba6 PB |
546 | char buffer[1024]; |
547 | char *ptr = buffer; | |
a5296ca9 | 548 | |
e3cb6ba6 PB |
549 | prop->info->print(dev, prop, buffer, sizeof(buffer)); |
550 | visit_type_str(v, &ptr, name, errp); | |
a5296ca9 AL |
551 | } |
552 | ||
57c9fafe | 553 | static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
a5296ca9 AL |
554 | const char *name, Error **errp) |
555 | { | |
57c9fafe | 556 | DeviceState *dev = DEVICE(obj); |
a5296ca9 | 557 | Property *prop = opaque; |
e3cb6ba6 PB |
558 | Error *local_err = NULL; |
559 | char *ptr = NULL; | |
560 | int ret; | |
a5296ca9 AL |
561 | |
562 | if (dev->state != DEV_STATE_CREATED) { | |
563 | error_set(errp, QERR_PERMISSION_DENIED); | |
564 | return; | |
565 | } | |
566 | ||
e3cb6ba6 PB |
567 | visit_type_str(v, &ptr, name, &local_err); |
568 | if (local_err) { | |
569 | error_propagate(errp, local_err); | |
570 | return; | |
571 | } | |
a5296ca9 | 572 | |
e3cb6ba6 | 573 | ret = prop->info->parse(dev, prop, ptr); |
7db4c4e8 | 574 | error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
e3cb6ba6 | 575 | g_free(ptr); |
a5296ca9 AL |
576 | } |
577 | ||
578 | /** | |
579 | * @qdev_add_legacy_property - adds a legacy property | |
580 | * | |
581 | * Do not use this is new code! Properties added through this interface will | |
ca2cc788 | 582 | * be given names and types in the "legacy" namespace. |
a5296ca9 | 583 | * |
68ee3569 PB |
584 | * Legacy properties are string versions of other OOM properties. The format |
585 | * of the string depends on the property type. | |
a5296ca9 AL |
586 | */ |
587 | void qdev_property_add_legacy(DeviceState *dev, Property *prop, | |
588 | Error **errp) | |
589 | { | |
ca2cc788 | 590 | gchar *name, *type; |
a5296ca9 | 591 | |
f3be016d AL |
592 | /* Register pointer properties as legacy properties */ |
593 | if (!prop->info->print && !prop->info->parse && | |
594 | (prop->info->set || prop->info->get)) { | |
68ee3569 PB |
595 | return; |
596 | } | |
f3be016d | 597 | |
ca2cc788 | 598 | name = g_strdup_printf("legacy-%s", prop->name); |
cafe5bdb PB |
599 | type = g_strdup_printf("legacy<%s>", |
600 | prop->info->legacy_name ?: prop->info->name); | |
a5296ca9 | 601 | |
57c9fafe | 602 | object_property_add(OBJECT(dev), name, type, |
68ee3569 PB |
603 | prop->info->print ? qdev_get_legacy_property : prop->info->get, |
604 | prop->info->parse ? qdev_set_legacy_property : prop->info->set, | |
57c9fafe AL |
605 | NULL, |
606 | prop, errp); | |
a5296ca9 AL |
607 | |
608 | g_free(type); | |
ca2cc788 PB |
609 | g_free(name); |
610 | } | |
611 | ||
612 | /** | |
613 | * @qdev_property_add_static - add a @Property to a device. | |
614 | * | |
615 | * Static properties access data in a struct. The actual type of the | |
616 | * property and the field depends on the property type. | |
617 | */ | |
618 | void qdev_property_add_static(DeviceState *dev, Property *prop, | |
619 | Error **errp) | |
620 | { | |
fdae245f PB |
621 | Error *local_err = NULL; |
622 | Object *obj = OBJECT(dev); | |
623 | ||
d822979b PB |
624 | /* |
625 | * TODO qdev_prop_ptr does not have getters or setters. It must | |
626 | * go now that it can be replaced with links. The test should be | |
627 | * removed along with it: all static properties are read/write. | |
628 | */ | |
629 | if (!prop->info->get && !prop->info->set) { | |
630 | return; | |
631 | } | |
632 | ||
fdae245f | 633 | object_property_add(obj, prop->name, prop->info->name, |
57c9fafe | 634 | prop->info->get, prop->info->set, |
dd0ba250 | 635 | prop->info->release, |
fdae245f PB |
636 | prop, &local_err); |
637 | ||
638 | if (local_err) { | |
639 | error_propagate(errp, local_err); | |
640 | return; | |
641 | } | |
642 | if (prop->qtype == QTYPE_NONE) { | |
643 | return; | |
644 | } | |
645 | ||
646 | if (prop->qtype == QTYPE_QBOOL) { | |
647 | object_property_set_bool(obj, prop->defval, prop->name, &local_err); | |
648 | } else if (prop->info->enum_table) { | |
649 | object_property_set_str(obj, prop->info->enum_table[prop->defval], | |
650 | prop->name, &local_err); | |
651 | } else if (prop->qtype == QTYPE_QINT) { | |
652 | object_property_set_int(obj, prop->defval, prop->name, &local_err); | |
653 | } | |
654 | assert_no_error(local_err); | |
6a146eba | 655 | } |
1de81d28 | 656 | |
9674bfe4 AL |
657 | static void device_initfn(Object *obj) |
658 | { | |
659 | DeviceState *dev = DEVICE(obj); | |
bce54474 | 660 | ObjectClass *class; |
9674bfe4 AL |
661 | Property *prop; |
662 | ||
663 | if (qdev_hotplug) { | |
664 | dev->hotplugged = 1; | |
665 | qdev_hot_added = true; | |
666 | } | |
667 | ||
668 | dev->instance_id_alias = -1; | |
9674bfe4 AL |
669 | dev->state = DEV_STATE_CREATED; |
670 | ||
bce54474 PB |
671 | class = object_get_class(OBJECT(dev)); |
672 | do { | |
673 | for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { | |
674 | qdev_property_add_legacy(dev, prop, NULL); | |
675 | qdev_property_add_static(dev, prop, NULL); | |
676 | } | |
bce54474 PB |
677 | class = object_class_get_parent(class); |
678 | } while (class != object_class_by_name(TYPE_DEVICE)); | |
4b3582b0 | 679 | qdev_prop_set_globals(dev); |
9674bfe4 | 680 | |
f968fc68 AL |
681 | object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS, |
682 | (Object **)&dev->parent_bus, NULL); | |
9674bfe4 AL |
683 | } |
684 | ||
60adba37 AL |
685 | /* Unlink device from bus and free the structure. */ |
686 | static void device_finalize(Object *obj) | |
687 | { | |
688 | DeviceState *dev = DEVICE(obj); | |
689 | BusState *bus; | |
60adba37 AL |
690 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
691 | ||
692 | if (dev->state == DEV_STATE_INITIALIZED) { | |
693 | while (dev->num_child_bus) { | |
694 | bus = QLIST_FIRST(&dev->child_bus); | |
695 | qbus_free(bus); | |
696 | } | |
697 | if (qdev_get_vmsd(dev)) { | |
698 | vmstate_unregister(dev, qdev_get_vmsd(dev), dev); | |
699 | } | |
700 | if (dc->exit) { | |
701 | dc->exit(dev); | |
702 | } | |
703 | if (dev->opts) { | |
704 | qemu_opts_del(dev->opts); | |
705 | } | |
706 | } | |
0866aca1 AL |
707 | if (dev->parent_bus) { |
708 | bus_remove_child(dev->parent_bus, dev); | |
709 | } | |
60adba37 AL |
710 | } |
711 | ||
bce54474 PB |
712 | static void device_class_base_init(ObjectClass *class, void *data) |
713 | { | |
714 | DeviceClass *klass = DEVICE_CLASS(class); | |
715 | ||
716 | /* We explicitly look up properties in the superclasses, | |
717 | * so do not propagate them to the subclasses. | |
718 | */ | |
719 | klass->props = NULL; | |
60adba37 AL |
720 | } |
721 | ||
94afdadc AL |
722 | void device_reset(DeviceState *dev) |
723 | { | |
724 | DeviceClass *klass = DEVICE_GET_CLASS(dev); | |
725 | ||
726 | if (klass->reset) { | |
727 | klass->reset(dev); | |
728 | } | |
729 | } | |
730 | ||
f05f6b4a PB |
731 | Object *qdev_get_machine(void) |
732 | { | |
733 | static Object *dev; | |
734 | ||
735 | if (dev == NULL) { | |
dfe47e70 | 736 | dev = container_get(object_get_root(), "/machine"); |
f05f6b4a PB |
737 | } |
738 | ||
739 | return dev; | |
740 | } | |
741 | ||
32fea402 AL |
742 | static TypeInfo device_type_info = { |
743 | .name = TYPE_DEVICE, | |
744 | .parent = TYPE_OBJECT, | |
745 | .instance_size = sizeof(DeviceState), | |
9674bfe4 | 746 | .instance_init = device_initfn, |
60adba37 | 747 | .instance_finalize = device_finalize, |
bce54474 | 748 | .class_base_init = device_class_base_init, |
32fea402 AL |
749 | .abstract = true, |
750 | .class_size = sizeof(DeviceClass), | |
751 | }; | |
752 | ||
ac7d1ba6 AL |
753 | static void qbus_initfn(Object *obj) |
754 | { | |
755 | BusState *bus = BUS(obj); | |
756 | ||
757 | QTAILQ_INIT(&bus->children); | |
758 | } | |
759 | ||
760 | static void qbus_finalize(Object *obj) | |
761 | { | |
762 | BusState *bus = BUS(obj); | |
763 | BusChild *kid; | |
764 | ||
765 | while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { | |
766 | DeviceState *dev = kid->child; | |
767 | qdev_free(dev); | |
768 | } | |
769 | if (bus->parent) { | |
770 | QLIST_REMOVE(bus, sibling); | |
771 | bus->parent->num_child_bus--; | |
772 | } else { | |
773 | assert(bus != sysbus_get_default()); /* main_system_bus is never freed */ | |
774 | qemu_unregister_reset(qbus_reset_all_fn, bus); | |
775 | } | |
776 | g_free((char *)bus->name); | |
777 | } | |
778 | ||
0d936928 AL |
779 | static const TypeInfo bus_info = { |
780 | .name = TYPE_BUS, | |
781 | .parent = TYPE_OBJECT, | |
782 | .instance_size = sizeof(BusState), | |
783 | .abstract = true, | |
784 | .class_size = sizeof(BusClass), | |
ac7d1ba6 AL |
785 | .instance_init = qbus_initfn, |
786 | .instance_finalize = qbus_finalize, | |
0d936928 AL |
787 | }; |
788 | ||
83f7d43a | 789 | static void qdev_register_types(void) |
32fea402 | 790 | { |
0d936928 | 791 | type_register_static(&bus_info); |
32fea402 AL |
792 | type_register_static(&device_type_info); |
793 | } | |
794 | ||
83f7d43a | 795 | type_init(qdev_register_types) |