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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" | |
cae4956e | 31 | #include "monitor.h" |
aae9460e | 32 | |
3418bd25 | 33 | static 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 | |
0958b4cc | 41 | DeviceInfo *device_info_list; |
aae9460e | 42 | |
8ffb1bcf GH |
43 | static BusState *qbus_find_recursive(BusState *bus, const char *name, |
44 | const BusInfo *info); | |
45 | static BusState *qbus_find(const char *path); | |
46 | ||
aae9460e | 47 | /* Register a new device type. */ |
074f2fff | 48 | void qdev_register(DeviceInfo *info) |
aae9460e | 49 | { |
074f2fff | 50 | assert(info->size >= sizeof(DeviceState)); |
042f84d0 | 51 | assert(!info->next); |
aae9460e | 52 | |
042f84d0 GH |
53 | info->next = device_info_list; |
54 | device_info_list = info; | |
aae9460e PB |
55 | } |
56 | ||
81ebb98b GH |
57 | static DeviceInfo *qdev_find_info(BusInfo *bus_info, const char *name) |
58 | { | |
59 | DeviceInfo *info; | |
60 | ||
3320e56e | 61 | /* first check device names */ |
81ebb98b GH |
62 | for (info = device_info_list; info != NULL; info = info->next) { |
63 | if (bus_info && info->bus_info != bus_info) | |
64 | continue; | |
65 | if (strcmp(info->name, name) != 0) | |
66 | continue; | |
67 | return info; | |
68 | } | |
3320e56e GH |
69 | |
70 | /* failing that check the aliases */ | |
71 | for (info = device_info_list; info != NULL; info = info->next) { | |
72 | if (bus_info && info->bus_info != bus_info) | |
73 | continue; | |
74 | if (!info->alias) | |
75 | continue; | |
76 | if (strcmp(info->alias, name) != 0) | |
77 | continue; | |
78 | return info; | |
79 | } | |
81ebb98b GH |
80 | return NULL; |
81 | } | |
82 | ||
0c17542d MA |
83 | static DeviceState *qdev_create_from_info(BusState *bus, DeviceInfo *info) |
84 | { | |
85 | DeviceState *dev; | |
a5296ca9 | 86 | Property *prop; |
0c17542d MA |
87 | |
88 | assert(bus->info == info->bus_info); | |
7267c094 | 89 | dev = g_malloc0(info->size); |
0c17542d MA |
90 | dev->info = info; |
91 | dev->parent_bus = bus; | |
92 | qdev_prop_set_defaults(dev, dev->info->props); | |
93 | qdev_prop_set_defaults(dev, dev->parent_bus->info->props); | |
94 | qdev_prop_set_globals(dev); | |
d8bb00d6 | 95 | QTAILQ_INSERT_HEAD(&bus->children, dev, sibling); |
0c17542d MA |
96 | if (qdev_hotplug) { |
97 | assert(bus->allow_hotplug); | |
98 | dev->hotplugged = 1; | |
0ac8ef71 | 99 | qdev_hot_added = true; |
0c17542d | 100 | } |
4d2ffa08 | 101 | dev->instance_id_alias = -1; |
44677ded | 102 | QTAILQ_INIT(&dev->properties); |
0c17542d | 103 | dev->state = DEV_STATE_CREATED; |
a5296ca9 AL |
104 | |
105 | for (prop = dev->info->props; prop && prop->name; prop++) { | |
106 | qdev_property_add_legacy(dev, prop, NULL); | |
107 | } | |
108 | ||
109 | for (prop = dev->info->bus_info->props; prop && prop->name; prop++) { | |
110 | qdev_property_add_legacy(dev, prop, NULL); | |
111 | } | |
112 | ||
0c17542d MA |
113 | return dev; |
114 | } | |
115 | ||
aae9460e PB |
116 | /* Create a new device. This only initializes the device state structure |
117 | and allows properties to be set. qdev_init should be called to | |
118 | initialize the actual device emulation. */ | |
02e2da45 | 119 | DeviceState *qdev_create(BusState *bus, const char *name) |
0bcdeda7 BS |
120 | { |
121 | DeviceState *dev; | |
122 | ||
123 | dev = qdev_try_create(bus, name); | |
124 | if (!dev) { | |
e92714c7 PM |
125 | if (bus) { |
126 | hw_error("Unknown device '%s' for bus '%s'\n", name, | |
127 | bus->info->name); | |
128 | } else { | |
129 | hw_error("Unknown device '%s' for default sysbus\n", name); | |
130 | } | |
0bcdeda7 BS |
131 | } |
132 | ||
133 | return dev; | |
134 | } | |
135 | ||
136 | DeviceState *qdev_try_create(BusState *bus, const char *name) | |
aae9460e | 137 | { |
042f84d0 | 138 | DeviceInfo *info; |
aae9460e | 139 | |
10c4c98a | 140 | if (!bus) { |
68694897 | 141 | bus = sysbus_get_default(); |
10c4c98a GH |
142 | } |
143 | ||
81ebb98b | 144 | info = qdev_find_info(bus->info, name); |
042f84d0 | 145 | if (!info) { |
0bcdeda7 | 146 | return NULL; |
aae9460e PB |
147 | } |
148 | ||
0c17542d | 149 | return qdev_create_from_info(bus, info); |
aae9460e PB |
150 | } |
151 | ||
8a9662ca | 152 | static void qdev_print_devinfo(DeviceInfo *info) |
1b524b04 | 153 | { |
8a9662ca MA |
154 | error_printf("name \"%s\", bus %s", |
155 | info->name, info->bus_info->name); | |
22f2e344 | 156 | if (info->alias) { |
8a9662ca | 157 | error_printf(", alias \"%s\"", info->alias); |
22f2e344 GH |
158 | } |
159 | if (info->desc) { | |
8a9662ca | 160 | error_printf(", desc \"%s\"", info->desc); |
22f2e344 GH |
161 | } |
162 | if (info->no_user) { | |
8a9662ca | 163 | error_printf(", no-user"); |
22f2e344 | 164 | } |
8a9662ca | 165 | error_printf("\n"); |
1b524b04 GH |
166 | } |
167 | ||
f31d07d1 | 168 | static int set_property(const char *name, const char *value, void *opaque) |
8ffb1bcf | 169 | { |
f31d07d1 GH |
170 | DeviceState *dev = opaque; |
171 | ||
172 | if (strcmp(name, "driver") == 0) | |
173 | return 0; | |
174 | if (strcmp(name, "bus") == 0) | |
175 | return 0; | |
176 | ||
3df04ac3 | 177 | if (qdev_prop_parse(dev, name, value) == -1) { |
f31d07d1 GH |
178 | return -1; |
179 | } | |
180 | return 0; | |
181 | } | |
182 | ||
ff952ba2 MA |
183 | int qdev_device_help(QemuOpts *opts) |
184 | { | |
185 | const char *driver; | |
186 | DeviceInfo *info; | |
08350cf0 | 187 | Property *prop; |
ff952ba2 MA |
188 | |
189 | driver = qemu_opt_get(opts, "driver"); | |
190 | if (driver && !strcmp(driver, "?")) { | |
191 | for (info = device_info_list; info != NULL; info = info->next) { | |
c64eafaf MA |
192 | if (info->no_user) { |
193 | continue; /* not available, don't show */ | |
194 | } | |
8a9662ca | 195 | qdev_print_devinfo(info); |
ff952ba2 MA |
196 | } |
197 | return 1; | |
198 | } | |
199 | ||
542379f4 | 200 | if (!driver || !qemu_opt_get(opts, "?")) { |
08350cf0 MA |
201 | return 0; |
202 | } | |
203 | ||
204 | info = qdev_find_info(NULL, driver); | |
205 | if (!info) { | |
206 | return 0; | |
207 | } | |
208 | ||
209 | for (prop = info->props; prop && prop->name; prop++) { | |
036f7166 MA |
210 | /* |
211 | * TODO Properties without a parser are just for dirty hacks. | |
212 | * qdev_prop_ptr is the only such PropertyInfo. It's marked | |
213 | * for removal. This conditional should be removed along with | |
214 | * it. | |
215 | */ | |
216 | if (!prop->info->parse) { | |
217 | continue; /* no way to set it, don't show */ | |
218 | } | |
a8467c7a GH |
219 | error_printf("%s.%s=%s\n", info->name, prop->name, prop->info->name); |
220 | } | |
221 | for (prop = info->bus_info->props; prop && prop->name; prop++) { | |
222 | if (!prop->info->parse) { | |
223 | continue; /* no way to set it, don't show */ | |
224 | } | |
8a9662ca | 225 | error_printf("%s.%s=%s\n", info->name, prop->name, prop->info->name); |
08350cf0 MA |
226 | } |
227 | return 1; | |
ff952ba2 MA |
228 | } |
229 | ||
1bdaacb1 AL |
230 | static DeviceState *qdev_get_peripheral(void) |
231 | { | |
232 | static DeviceState *dev; | |
233 | ||
234 | if (dev == NULL) { | |
235 | dev = qdev_create(NULL, "container"); | |
236 | qdev_property_add_child(qdev_get_root(), "peripheral", dev, NULL); | |
237 | qdev_init_nofail(dev); | |
238 | } | |
239 | ||
240 | return dev; | |
241 | } | |
242 | ||
8eb02831 AL |
243 | static DeviceState *qdev_get_peripheral_anon(void) |
244 | { | |
245 | static DeviceState *dev; | |
246 | ||
247 | if (dev == NULL) { | |
248 | dev = qdev_create(NULL, "container"); | |
249 | qdev_property_add_child(qdev_get_root(), "peripheral-anon", dev, NULL); | |
250 | qdev_init_nofail(dev); | |
251 | } | |
252 | ||
253 | return dev; | |
254 | } | |
255 | ||
f31d07d1 GH |
256 | DeviceState *qdev_device_add(QemuOpts *opts) |
257 | { | |
258 | const char *driver, *path, *id; | |
8ffb1bcf GH |
259 | DeviceInfo *info; |
260 | DeviceState *qdev; | |
261 | BusState *bus; | |
8ffb1bcf | 262 | |
f31d07d1 GH |
263 | driver = qemu_opt_get(opts, "driver"); |
264 | if (!driver) { | |
0204276b | 265 | qerror_report(QERR_MISSING_PARAMETER, "driver"); |
8ffb1bcf GH |
266 | return NULL; |
267 | } | |
f31d07d1 GH |
268 | |
269 | /* find driver */ | |
8ffb1bcf | 270 | info = qdev_find_info(NULL, driver); |
c64eafaf | 271 | if (!info || info->no_user) { |
e17ba87c | 272 | qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "a driver name"); |
0204276b | 273 | error_printf_unless_qmp("Try with argument '?' for a list.\n"); |
8ffb1bcf GH |
274 | return NULL; |
275 | } | |
8ffb1bcf | 276 | |
f31d07d1 GH |
277 | /* find bus */ |
278 | path = qemu_opt_get(opts, "bus"); | |
279 | if (path != NULL) { | |
8ffb1bcf | 280 | bus = qbus_find(path); |
ac8dae67 MA |
281 | if (!bus) { |
282 | return NULL; | |
283 | } | |
284 | if (bus->info != info->bus_info) { | |
0204276b MA |
285 | qerror_report(QERR_BAD_BUS_FOR_DEVICE, |
286 | driver, bus->info->name); | |
327867b6 MA |
287 | return NULL; |
288 | } | |
8ffb1bcf GH |
289 | } else { |
290 | bus = qbus_find_recursive(main_system_bus, NULL, info->bus_info); | |
ac8dae67 | 291 | if (!bus) { |
0204276b MA |
292 | qerror_report(QERR_NO_BUS_FOR_DEVICE, |
293 | info->name, info->bus_info->name); | |
ac8dae67 MA |
294 | return NULL; |
295 | } | |
75570088 | 296 | } |
3418bd25 | 297 | if (qdev_hotplug && !bus->allow_hotplug) { |
0204276b | 298 | qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); |
3418bd25 GH |
299 | return NULL; |
300 | } | |
8ffb1bcf | 301 | |
f31d07d1 | 302 | /* create device, set properties */ |
0c17542d | 303 | qdev = qdev_create_from_info(bus, info); |
f31d07d1 GH |
304 | id = qemu_opts_id(opts); |
305 | if (id) { | |
306 | qdev->id = id; | |
1bdaacb1 | 307 | qdev_property_add_child(qdev_get_peripheral(), qdev->id, qdev, NULL); |
8eb02831 AL |
308 | } else { |
309 | static int anon_count; | |
310 | gchar *name = g_strdup_printf("device[%d]", anon_count++); | |
311 | qdev_property_add_child(qdev_get_peripheral_anon(), name, | |
312 | qdev, NULL); | |
313 | g_free(name); | |
314 | } | |
f31d07d1 GH |
315 | if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) { |
316 | qdev_free(qdev); | |
317 | return NULL; | |
8ffb1bcf | 318 | } |
5c17ca25 | 319 | if (qdev_init(qdev) < 0) { |
0204276b | 320 | qerror_report(QERR_DEVICE_INIT_FAILED, driver); |
81a322d4 GH |
321 | return NULL; |
322 | } | |
ef80b466 | 323 | qdev->opts = opts; |
8ffb1bcf GH |
324 | return qdev; |
325 | } | |
326 | ||
aae9460e PB |
327 | /* Initialize a device. Device properties should be set before calling |
328 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
329 | calling this function. |
330 | On failure, destroy the device and return negative value. | |
331 | Return 0 on success. */ | |
81a322d4 | 332 | int qdev_init(DeviceState *dev) |
aae9460e | 333 | { |
959f733a GH |
334 | int rc; |
335 | ||
131ec1bd | 336 | assert(dev->state == DEV_STATE_CREATED); |
959f733a | 337 | rc = dev->info->init(dev, dev->info); |
18cfeb52 MA |
338 | if (rc < 0) { |
339 | qdev_free(dev); | |
959f733a | 340 | return rc; |
18cfeb52 | 341 | } |
4d2ffa08 | 342 | if (dev->info->vmsd) { |
0be71e32 | 343 | vmstate_register_with_alias_id(dev, -1, dev->info->vmsd, dev, |
4d2ffa08 JK |
344 | dev->instance_id_alias, |
345 | dev->alias_required_for_version); | |
346 | } | |
131ec1bd | 347 | dev->state = DEV_STATE_INITIALIZED; |
5ab28c83 JK |
348 | if (dev->hotplugged && dev->info->reset) { |
349 | dev->info->reset(dev); | |
350 | } | |
959f733a | 351 | return 0; |
02e2da45 PB |
352 | } |
353 | ||
4d2ffa08 JK |
354 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
355 | int required_for_version) | |
356 | { | |
357 | assert(dev->state == DEV_STATE_CREATED); | |
358 | dev->instance_id_alias = alias_id; | |
359 | dev->alias_required_for_version = required_for_version; | |
360 | } | |
361 | ||
3418bd25 GH |
362 | int qdev_unplug(DeviceState *dev) |
363 | { | |
364 | if (!dev->parent_bus->allow_hotplug) { | |
cc601cb7 | 365 | qerror_report(QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
3418bd25 GH |
366 | return -1; |
367 | } | |
593831de AS |
368 | assert(dev->info->unplug != NULL); |
369 | ||
85ed303b AL |
370 | if (dev->ref != 0) { |
371 | qerror_report(QERR_DEVICE_IN_USE, dev->id?:""); | |
372 | return -1; | |
373 | } | |
374 | ||
0ac8ef71 AW |
375 | qdev_hot_removed = true; |
376 | ||
3418bd25 GH |
377 | return dev->info->unplug(dev); |
378 | } | |
379 | ||
ec990eb6 AL |
380 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
381 | { | |
382 | if (dev->info->reset) { | |
383 | dev->info->reset(dev); | |
384 | } | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | BusState *sysbus_get_default(void) | |
390 | { | |
68694897 | 391 | if (!main_system_bus) { |
2da8bb92 | 392 | main_system_bus_create(); |
68694897 | 393 | } |
ec990eb6 AL |
394 | return main_system_bus; |
395 | } | |
396 | ||
b4694b7c IY |
397 | static int qbus_reset_one(BusState *bus, void *opaque) |
398 | { | |
399 | if (bus->info->reset) { | |
400 | return bus->info->reset(bus); | |
401 | } | |
402 | return 0; | |
403 | } | |
404 | ||
5af0a04b IY |
405 | void qdev_reset_all(DeviceState *dev) |
406 | { | |
407 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
408 | } | |
409 | ||
80376c3f IY |
410 | void qbus_reset_all_fn(void *opaque) |
411 | { | |
412 | BusState *bus = opaque; | |
f530cce3 | 413 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); |
80376c3f IY |
414 | } |
415 | ||
3418bd25 GH |
416 | /* can be used as ->unplug() callback for the simple cases */ |
417 | int qdev_simple_unplug_cb(DeviceState *dev) | |
418 | { | |
419 | /* just zap it */ | |
420 | qdev_free(dev); | |
421 | return 0; | |
422 | } | |
423 | ||
3b29a101 MT |
424 | |
425 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
426 | returning an error value. This is okay during machine creation. |
427 | Don't use for hotplug, because there callers need to recover from | |
428 | failure. Exception: if you know the device's init() callback can't | |
429 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
430 | usable even then. But relying on the device implementation that | |
431 | way is somewhat unclean, and best avoided. */ | |
432 | void qdev_init_nofail(DeviceState *dev) | |
433 | { | |
434 | DeviceInfo *info = dev->info; | |
435 | ||
bd6c9a61 | 436 | if (qdev_init(dev) < 0) { |
6daf194d | 437 | error_report("Initialization of device %s failed", info->name); |
bd6c9a61 MA |
438 | exit(1); |
439 | } | |
e23a1b33 MA |
440 | } |
441 | ||
44677ded AL |
442 | static void qdev_property_del_all(DeviceState *dev) |
443 | { | |
444 | while (!QTAILQ_EMPTY(&dev->properties)) { | |
445 | DeviceProperty *prop = QTAILQ_FIRST(&dev->properties); | |
446 | ||
447 | QTAILQ_REMOVE(&dev->properties, prop, node); | |
448 | ||
449 | if (prop->release) { | |
450 | prop->release(dev, prop->name, prop->opaque); | |
451 | } | |
452 | ||
453 | g_free(prop->name); | |
454 | g_free(prop->type); | |
455 | g_free(prop); | |
456 | } | |
457 | } | |
458 | ||
02e2da45 PB |
459 | /* Unlink device from bus and free the structure. */ |
460 | void qdev_free(DeviceState *dev) | |
461 | { | |
131ec1bd | 462 | BusState *bus; |
d21357df | 463 | Property *prop; |
131ec1bd | 464 | |
44677ded AL |
465 | qdev_property_del_all(dev); |
466 | ||
131ec1bd GH |
467 | if (dev->state == DEV_STATE_INITIALIZED) { |
468 | while (dev->num_child_bus) { | |
469 | bus = QLIST_FIRST(&dev->child_bus); | |
470 | qbus_free(bus); | |
471 | } | |
131ec1bd | 472 | if (dev->info->vmsd) |
0be71e32 | 473 | vmstate_unregister(dev, dev->info->vmsd, dev); |
d29275f1 GH |
474 | if (dev->info->exit) |
475 | dev->info->exit(dev); | |
ef80b466 GH |
476 | if (dev->opts) |
477 | qemu_opts_del(dev->opts); | |
131ec1bd | 478 | } |
d8bb00d6 | 479 | QTAILQ_REMOVE(&dev->parent_bus->children, dev, sibling); |
d21357df MA |
480 | for (prop = dev->info->props; prop && prop->name; prop++) { |
481 | if (prop->info->free) { | |
482 | prop->info->free(dev, prop); | |
483 | } | |
484 | } | |
7267c094 | 485 | g_free(dev); |
aae9460e PB |
486 | } |
487 | ||
3418bd25 GH |
488 | void qdev_machine_creation_done(void) |
489 | { | |
490 | /* | |
491 | * ok, initial machine setup is done, starting from now we can | |
492 | * only create hotpluggable devices | |
493 | */ | |
494 | qdev_hotplug = 1; | |
495 | } | |
496 | ||
0ac8ef71 AW |
497 | bool qdev_machine_modified(void) |
498 | { | |
499 | return qdev_hot_added || qdev_hot_removed; | |
500 | } | |
501 | ||
aae9460e PB |
502 | /* Get a character (serial) device interface. */ |
503 | CharDriverState *qdev_init_chardev(DeviceState *dev) | |
504 | { | |
505 | static int next_serial; | |
98b19252 AS |
506 | |
507 | /* FIXME: This function needs to go away: use chardev properties! */ | |
508 | return serial_hds[next_serial++]; | |
aae9460e PB |
509 | } |
510 | ||
02e2da45 | 511 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 512 | { |
02e2da45 | 513 | return dev->parent_bus; |
aae9460e PB |
514 | } |
515 | ||
aae9460e PB |
516 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
517 | { | |
518 | assert(dev->num_gpio_in == 0); | |
519 | dev->num_gpio_in = n; | |
520 | dev->gpio_in = qemu_allocate_irqs(handler, dev, n); | |
521 | } | |
522 | ||
523 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
524 | { | |
525 | assert(dev->num_gpio_out == 0); | |
526 | dev->num_gpio_out = n; | |
527 | dev->gpio_out = pins; | |
528 | } | |
529 | ||
530 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
531 | { | |
532 | assert(n >= 0 && n < dev->num_gpio_in); | |
533 | return dev->gpio_in[n]; | |
534 | } | |
535 | ||
536 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
537 | { | |
538 | assert(n >= 0 && n < dev->num_gpio_out); | |
539 | dev->gpio_out[n] = pin; | |
540 | } | |
541 | ||
ed16ab5a GH |
542 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) |
543 | { | |
6eed1856 | 544 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); |
ed16ab5a GH |
545 | if (nd->vlan) |
546 | qdev_prop_set_vlan(dev, "vlan", nd->vlan); | |
547 | if (nd->netdev) | |
548 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
75422b0d | 549 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && |
97b15621 GH |
550 | qdev_prop_exists(dev, "vectors")) { |
551 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
552 | } | |
48e2faf2 | 553 | nd->instantiated = 1; |
ed16ab5a GH |
554 | } |
555 | ||
02e2da45 | 556 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 557 | { |
02e2da45 | 558 | BusState *bus; |
4d6ae674 | 559 | |
72cf2d4f | 560 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 561 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 562 | return bus; |
4d6ae674 PB |
563 | } |
564 | } | |
565 | return NULL; | |
566 | } | |
567 | ||
81699d8a AL |
568 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
569 | qbus_walkerfn *busfn, void *opaque) | |
570 | { | |
571 | DeviceState *dev; | |
572 | int err; | |
573 | ||
574 | if (busfn) { | |
575 | err = busfn(bus, opaque); | |
576 | if (err) { | |
577 | return err; | |
578 | } | |
579 | } | |
580 | ||
d8bb00d6 | 581 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
81699d8a AL |
582 | err = qdev_walk_children(dev, devfn, busfn, opaque); |
583 | if (err < 0) { | |
584 | return err; | |
585 | } | |
586 | } | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
591 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
592 | qbus_walkerfn *busfn, void *opaque) | |
593 | { | |
594 | BusState *bus; | |
595 | int err; | |
596 | ||
597 | if (devfn) { | |
598 | err = devfn(dev, opaque); | |
599 | if (err) { | |
600 | return err; | |
601 | } | |
602 | } | |
603 | ||
604 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
605 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
606 | if (err < 0) { | |
607 | return err; | |
608 | } | |
609 | } | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
8ffb1bcf GH |
614 | static BusState *qbus_find_recursive(BusState *bus, const char *name, |
615 | const BusInfo *info) | |
616 | { | |
617 | DeviceState *dev; | |
618 | BusState *child, *ret; | |
619 | int match = 1; | |
620 | ||
621 | if (name && (strcmp(bus->name, name) != 0)) { | |
622 | match = 0; | |
623 | } | |
624 | if (info && (bus->info != info)) { | |
625 | match = 0; | |
626 | } | |
627 | if (match) { | |
628 | return bus; | |
629 | } | |
630 | ||
d8bb00d6 | 631 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
72cf2d4f | 632 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
8ffb1bcf GH |
633 | ret = qbus_find_recursive(child, name, info); |
634 | if (ret) { | |
635 | return ret; | |
636 | } | |
637 | } | |
638 | } | |
639 | return NULL; | |
640 | } | |
641 | ||
a2ee6b4f | 642 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 GH |
643 | { |
644 | DeviceState *dev, *ret; | |
645 | BusState *child; | |
646 | ||
d8bb00d6 | 647 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
3418bd25 GH |
648 | if (dev->id && strcmp(dev->id, id) == 0) |
649 | return dev; | |
650 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
651 | ret = qdev_find_recursive(child, id); | |
652 | if (ret) { | |
653 | return ret; | |
654 | } | |
655 | } | |
656 | } | |
657 | return NULL; | |
658 | } | |
659 | ||
53db16b5 | 660 | static void qbus_list_bus(DeviceState *dev) |
8ffb1bcf GH |
661 | { |
662 | BusState *child; | |
663 | const char *sep = " "; | |
8ffb1bcf | 664 | |
53db16b5 MA |
665 | error_printf("child busses at \"%s\":", |
666 | dev->id ? dev->id : dev->info->name); | |
72cf2d4f | 667 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
53db16b5 | 668 | error_printf("%s\"%s\"", sep, child->name); |
8ffb1bcf GH |
669 | sep = ", "; |
670 | } | |
53db16b5 | 671 | error_printf("\n"); |
8ffb1bcf GH |
672 | } |
673 | ||
53db16b5 | 674 | static void qbus_list_dev(BusState *bus) |
8ffb1bcf GH |
675 | { |
676 | DeviceState *dev; | |
677 | const char *sep = " "; | |
8ffb1bcf | 678 | |
53db16b5 | 679 | error_printf("devices at \"%s\":", bus->name); |
d8bb00d6 | 680 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
53db16b5 | 681 | error_printf("%s\"%s\"", sep, dev->info->name); |
8ffb1bcf | 682 | if (dev->id) |
53db16b5 | 683 | error_printf("/\"%s\"", dev->id); |
8ffb1bcf GH |
684 | sep = ", "; |
685 | } | |
53db16b5 | 686 | error_printf("\n"); |
8ffb1bcf GH |
687 | } |
688 | ||
689 | static BusState *qbus_find_bus(DeviceState *dev, char *elem) | |
690 | { | |
691 | BusState *child; | |
692 | ||
72cf2d4f | 693 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
8ffb1bcf GH |
694 | if (strcmp(child->name, elem) == 0) { |
695 | return child; | |
696 | } | |
697 | } | |
698 | return NULL; | |
699 | } | |
700 | ||
701 | static DeviceState *qbus_find_dev(BusState *bus, char *elem) | |
702 | { | |
703 | DeviceState *dev; | |
704 | ||
705 | /* | |
706 | * try to match in order: | |
707 | * (1) instance id, if present | |
708 | * (2) driver name | |
709 | * (3) driver alias, if present | |
710 | */ | |
d8bb00d6 | 711 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
8ffb1bcf GH |
712 | if (dev->id && strcmp(dev->id, elem) == 0) { |
713 | return dev; | |
714 | } | |
715 | } | |
d8bb00d6 | 716 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
8ffb1bcf GH |
717 | if (strcmp(dev->info->name, elem) == 0) { |
718 | return dev; | |
719 | } | |
720 | } | |
d8bb00d6 | 721 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
8ffb1bcf GH |
722 | if (dev->info->alias && strcmp(dev->info->alias, elem) == 0) { |
723 | return dev; | |
724 | } | |
725 | } | |
726 | return NULL; | |
727 | } | |
728 | ||
729 | static BusState *qbus_find(const char *path) | |
730 | { | |
731 | DeviceState *dev; | |
732 | BusState *bus; | |
53db16b5 | 733 | char elem[128]; |
8ffb1bcf GH |
734 | int pos, len; |
735 | ||
736 | /* find start element */ | |
737 | if (path[0] == '/') { | |
738 | bus = main_system_bus; | |
739 | pos = 0; | |
740 | } else { | |
741 | if (sscanf(path, "%127[^/]%n", elem, &len) != 1) { | |
fc98eb43 MA |
742 | assert(!path[0]); |
743 | elem[0] = len = 0; | |
8ffb1bcf GH |
744 | } |
745 | bus = qbus_find_recursive(main_system_bus, elem, NULL); | |
746 | if (!bus) { | |
ac8dae67 | 747 | qerror_report(QERR_BUS_NOT_FOUND, elem); |
8ffb1bcf GH |
748 | return NULL; |
749 | } | |
750 | pos = len; | |
751 | } | |
752 | ||
753 | for (;;) { | |
fc98eb43 MA |
754 | assert(path[pos] == '/' || !path[pos]); |
755 | while (path[pos] == '/') { | |
756 | pos++; | |
757 | } | |
8ffb1bcf | 758 | if (path[pos] == '\0') { |
8ffb1bcf GH |
759 | return bus; |
760 | } | |
761 | ||
762 | /* find device */ | |
fc98eb43 MA |
763 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
764 | assert(0); | |
765 | elem[0] = len = 0; | |
8ffb1bcf GH |
766 | } |
767 | pos += len; | |
768 | dev = qbus_find_dev(bus, elem); | |
769 | if (!dev) { | |
ac8dae67 | 770 | qerror_report(QERR_DEVICE_NOT_FOUND, elem); |
8bc27249 MA |
771 | if (!monitor_cur_is_qmp()) { |
772 | qbus_list_dev(bus); | |
773 | } | |
8ffb1bcf GH |
774 | return NULL; |
775 | } | |
fc98eb43 MA |
776 | |
777 | assert(path[pos] == '/' || !path[pos]); | |
778 | while (path[pos] == '/') { | |
779 | pos++; | |
780 | } | |
8ffb1bcf GH |
781 | if (path[pos] == '\0') { |
782 | /* last specified element is a device. If it has exactly | |
783 | * one child bus accept it nevertheless */ | |
784 | switch (dev->num_child_bus) { | |
785 | case 0: | |
ac8dae67 | 786 | qerror_report(QERR_DEVICE_NO_BUS, elem); |
8ffb1bcf GH |
787 | return NULL; |
788 | case 1: | |
72cf2d4f | 789 | return QLIST_FIRST(&dev->child_bus); |
8ffb1bcf | 790 | default: |
ac8dae67 | 791 | qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem); |
8bc27249 MA |
792 | if (!monitor_cur_is_qmp()) { |
793 | qbus_list_bus(dev); | |
794 | } | |
8ffb1bcf GH |
795 | return NULL; |
796 | } | |
797 | } | |
798 | ||
799 | /* find bus */ | |
fc98eb43 MA |
800 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
801 | assert(0); | |
802 | elem[0] = len = 0; | |
8ffb1bcf GH |
803 | } |
804 | pos += len; | |
805 | bus = qbus_find_bus(dev, elem); | |
806 | if (!bus) { | |
ac8dae67 | 807 | qerror_report(QERR_BUS_NOT_FOUND, elem); |
8bc27249 MA |
808 | if (!monitor_cur_is_qmp()) { |
809 | qbus_list_bus(dev); | |
810 | } | |
8ffb1bcf GH |
811 | return NULL; |
812 | } | |
813 | } | |
814 | } | |
815 | ||
cd739fb6 GH |
816 | void qbus_create_inplace(BusState *bus, BusInfo *info, |
817 | DeviceState *parent, const char *name) | |
02e2da45 | 818 | { |
d271de9f GH |
819 | char *buf; |
820 | int i,len; | |
02e2da45 | 821 | |
10c4c98a | 822 | bus->info = info; |
02e2da45 | 823 | bus->parent = parent; |
d271de9f GH |
824 | |
825 | if (name) { | |
826 | /* use supplied name */ | |
7267c094 | 827 | bus->name = g_strdup(name); |
d271de9f GH |
828 | } else if (parent && parent->id) { |
829 | /* parent device has id -> use it for bus name */ | |
830 | len = strlen(parent->id) + 16; | |
7267c094 | 831 | buf = g_malloc(len); |
d271de9f GH |
832 | snprintf(buf, len, "%s.%d", parent->id, parent->num_child_bus); |
833 | bus->name = buf; | |
834 | } else { | |
835 | /* no id -> use lowercase bus type for bus name */ | |
836 | len = strlen(info->name) + 16; | |
7267c094 | 837 | buf = g_malloc(len); |
d271de9f GH |
838 | len = snprintf(buf, len, "%s.%d", info->name, |
839 | parent ? parent->num_child_bus : 0); | |
840 | for (i = 0; i < len; i++) | |
bb87ece5 | 841 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
842 | bus->name = buf; |
843 | } | |
844 | ||
d8bb00d6 | 845 | QTAILQ_INIT(&bus->children); |
02e2da45 | 846 | if (parent) { |
72cf2d4f | 847 | QLIST_INSERT_HEAD(&parent->child_bus, bus, sibling); |
d271de9f | 848 | parent->num_child_bus++; |
80376c3f IY |
849 | } else if (bus != main_system_bus) { |
850 | /* TODO: once all bus devices are qdevified, | |
851 | only reset handler for main_system_bus should be registered here. */ | |
852 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 853 | } |
cd739fb6 GH |
854 | } |
855 | ||
856 | BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name) | |
857 | { | |
858 | BusState *bus; | |
859 | ||
7267c094 | 860 | bus = g_malloc0(info->size); |
cd739fb6 GH |
861 | bus->qdev_allocated = 1; |
862 | qbus_create_inplace(bus, info, parent, name); | |
02e2da45 PB |
863 | return bus; |
864 | } | |
cae4956e | 865 | |
2da8bb92 IY |
866 | static void main_system_bus_create(void) |
867 | { | |
868 | /* assign main_system_bus before qbus_create_inplace() | |
869 | * in order to make "if (bus != main_system_bus)" work */ | |
7267c094 | 870 | main_system_bus = g_malloc0(system_bus_info.size); |
2da8bb92 IY |
871 | main_system_bus->qdev_allocated = 1; |
872 | qbus_create_inplace(main_system_bus, &system_bus_info, NULL, | |
873 | "main-system-bus"); | |
874 | } | |
875 | ||
131ec1bd GH |
876 | void qbus_free(BusState *bus) |
877 | { | |
878 | DeviceState *dev; | |
879 | ||
d8bb00d6 | 880 | while ((dev = QTAILQ_FIRST(&bus->children)) != NULL) { |
131ec1bd GH |
881 | qdev_free(dev); |
882 | } | |
883 | if (bus->parent) { | |
884 | QLIST_REMOVE(bus, sibling); | |
885 | bus->parent->num_child_bus--; | |
80376c3f IY |
886 | } else { |
887 | assert(bus != main_system_bus); /* main_system_bus is never freed */ | |
888 | qemu_unregister_reset(qbus_reset_all_fn, bus); | |
131ec1bd | 889 | } |
7267c094 | 890 | g_free((void*)bus->name); |
131ec1bd | 891 | if (bus->qdev_allocated) { |
7267c094 | 892 | g_free(bus); |
131ec1bd GH |
893 | } |
894 | } | |
895 | ||
cae4956e GH |
896 | #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) |
897 | static void qbus_print(Monitor *mon, BusState *bus, int indent); | |
898 | ||
ee6847d1 GH |
899 | static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, |
900 | const char *prefix, int indent) | |
901 | { | |
902 | char buf[64]; | |
903 | ||
904 | if (!props) | |
905 | return; | |
906 | while (props->name) { | |
036f7166 MA |
907 | /* |
908 | * TODO Properties without a print method are just for dirty | |
909 | * hacks. qdev_prop_ptr is the only such PropertyInfo. It's | |
910 | * marked for removal. The test props->info->print should be | |
911 | * removed along with it. | |
912 | */ | |
ee6847d1 GH |
913 | if (props->info->print) { |
914 | props->info->print(dev, props, buf, sizeof(buf)); | |
915 | qdev_printf("%s-prop: %s = %s\n", prefix, props->name, buf); | |
916 | } | |
917 | props++; | |
918 | } | |
919 | } | |
920 | ||
cae4956e GH |
921 | static void qdev_print(Monitor *mon, DeviceState *dev, int indent) |
922 | { | |
cae4956e | 923 | BusState *child; |
ccb63de3 GH |
924 | qdev_printf("dev: %s, id \"%s\"\n", dev->info->name, |
925 | dev->id ? dev->id : ""); | |
cae4956e GH |
926 | indent += 2; |
927 | if (dev->num_gpio_in) { | |
928 | qdev_printf("gpio-in %d\n", dev->num_gpio_in); | |
929 | } | |
930 | if (dev->num_gpio_out) { | |
931 | qdev_printf("gpio-out %d\n", dev->num_gpio_out); | |
932 | } | |
ee6847d1 GH |
933 | qdev_print_props(mon, dev, dev->info->props, "dev", indent); |
934 | qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent); | |
10c4c98a GH |
935 | if (dev->parent_bus->info->print_dev) |
936 | dev->parent_bus->info->print_dev(mon, dev, indent); | |
72cf2d4f | 937 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
cae4956e GH |
938 | qbus_print(mon, child, indent); |
939 | } | |
940 | } | |
941 | ||
942 | static void qbus_print(Monitor *mon, BusState *bus, int indent) | |
943 | { | |
944 | struct DeviceState *dev; | |
945 | ||
946 | qdev_printf("bus: %s\n", bus->name); | |
947 | indent += 2; | |
10c4c98a | 948 | qdev_printf("type %s\n", bus->info->name); |
d8bb00d6 | 949 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
cae4956e GH |
950 | qdev_print(mon, dev, indent); |
951 | } | |
952 | } | |
953 | #undef qdev_printf | |
954 | ||
955 | void do_info_qtree(Monitor *mon) | |
956 | { | |
957 | if (main_system_bus) | |
958 | qbus_print(mon, main_system_bus, 0); | |
959 | } | |
9316d30f | 960 | |
f6c64e0e | 961 | void do_info_qdm(Monitor *mon) |
9316d30f GH |
962 | { |
963 | DeviceInfo *info; | |
9316d30f GH |
964 | |
965 | for (info = device_info_list; info != NULL; info = info->next) { | |
8a9662ca | 966 | qdev_print_devinfo(info); |
9316d30f GH |
967 | } |
968 | } | |
3418bd25 | 969 | |
8bc27249 | 970 | int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
3418bd25 GH |
971 | { |
972 | QemuOpts *opts; | |
973 | ||
3329f07b | 974 | opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict); |
8bc27249 MA |
975 | if (!opts) { |
976 | return -1; | |
977 | } | |
978 | if (!monitor_cur_is_qmp() && qdev_device_help(opts)) { | |
979 | qemu_opts_del(opts); | |
980 | return 0; | |
0f853a38 | 981 | } |
8bc27249 MA |
982 | if (!qdev_device_add(opts)) { |
983 | qemu_opts_del(opts); | |
984 | return -1; | |
985 | } | |
986 | return 0; | |
3418bd25 GH |
987 | } |
988 | ||
17a38eaa | 989 | int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
3418bd25 GH |
990 | { |
991 | const char *id = qdict_get_str(qdict, "id"); | |
992 | DeviceState *dev; | |
993 | ||
994 | dev = qdev_find_recursive(main_system_bus, id); | |
995 | if (NULL == dev) { | |
17a38eaa MA |
996 | qerror_report(QERR_DEVICE_NOT_FOUND, id); |
997 | return -1; | |
3418bd25 | 998 | } |
17a38eaa | 999 | return qdev_unplug(dev); |
3418bd25 | 1000 | } |
1ca4d09a GN |
1001 | |
1002 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) | |
1003 | { | |
1004 | int l = 0; | |
1005 | ||
1006 | if (dev && dev->parent_bus) { | |
1007 | char *d; | |
1008 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
1009 | if (dev->parent_bus->info->get_fw_dev_path) { | |
1010 | d = dev->parent_bus->info->get_fw_dev_path(dev); | |
1011 | l += snprintf(p + l, size - l, "%s", d); | |
7267c094 | 1012 | g_free(d); |
1ca4d09a GN |
1013 | } else { |
1014 | l += snprintf(p + l, size - l, "%s", dev->info->name); | |
1015 | } | |
1016 | } | |
1017 | l += snprintf(p + l , size - l, "/"); | |
1018 | ||
1019 | return l; | |
1020 | } | |
1021 | ||
1022 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
1023 | { | |
1024 | char path[128]; | |
1025 | int l; | |
1026 | ||
1027 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
1028 | ||
1029 | path[l-1] = '\0'; | |
1030 | ||
1031 | return strdup(path); | |
1032 | } | |
85ed303b AL |
1033 | |
1034 | void qdev_ref(DeviceState *dev) | |
1035 | { | |
1036 | dev->ref++; | |
1037 | } | |
1038 | ||
1039 | void qdev_unref(DeviceState *dev) | |
1040 | { | |
1041 | g_assert(dev->ref > 0); | |
1042 | dev->ref--; | |
1043 | } | |
44677ded AL |
1044 | |
1045 | void qdev_property_add(DeviceState *dev, const char *name, const char *type, | |
1046 | DevicePropertyAccessor *get, DevicePropertyAccessor *set, | |
1047 | DevicePropertyRelease *release, | |
1048 | void *opaque, Error **errp) | |
1049 | { | |
1050 | DeviceProperty *prop = g_malloc0(sizeof(*prop)); | |
1051 | ||
1052 | prop->name = g_strdup(name); | |
1053 | prop->type = g_strdup(type); | |
1054 | ||
1055 | prop->get = get; | |
1056 | prop->set = set; | |
1057 | prop->release = release; | |
1058 | prop->opaque = opaque; | |
1059 | ||
1060 | QTAILQ_INSERT_TAIL(&dev->properties, prop, node); | |
1061 | } | |
1062 | ||
1063 | static DeviceProperty *qdev_property_find(DeviceState *dev, const char *name) | |
1064 | { | |
1065 | DeviceProperty *prop; | |
1066 | ||
1067 | QTAILQ_FOREACH(prop, &dev->properties, node) { | |
1068 | if (strcmp(prop->name, name) == 0) { | |
1069 | return prop; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | return NULL; | |
1074 | } | |
1075 | ||
1076 | void qdev_property_get(DeviceState *dev, Visitor *v, const char *name, | |
1077 | Error **errp) | |
1078 | { | |
1079 | DeviceProperty *prop = qdev_property_find(dev, name); | |
1080 | ||
1081 | if (prop == NULL) { | |
1082 | error_set(errp, QERR_PROPERTY_NOT_FOUND, dev->id?:"", name); | |
1083 | return; | |
1084 | } | |
1085 | ||
1086 | if (!prop->get) { | |
1087 | error_set(errp, QERR_PERMISSION_DENIED); | |
1088 | } else { | |
1089 | prop->get(dev, v, prop->opaque, name, errp); | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | void qdev_property_set(DeviceState *dev, Visitor *v, const char *name, | |
1094 | Error **errp) | |
1095 | { | |
1096 | DeviceProperty *prop = qdev_property_find(dev, name); | |
1097 | ||
1098 | if (prop == NULL) { | |
1099 | error_set(errp, QERR_PROPERTY_NOT_FOUND, dev->id?:"", name); | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | if (!prop->set) { | |
1104 | error_set(errp, QERR_PERMISSION_DENIED); | |
1105 | } else { | |
1106 | prop->set(dev, prop->opaque, v, name, errp); | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | const char *qdev_property_get_type(DeviceState *dev, const char *name, Error **errp) | |
1111 | { | |
1112 | DeviceProperty *prop = qdev_property_find(dev, name); | |
1113 | ||
1114 | if (prop == NULL) { | |
1115 | error_set(errp, QERR_PROPERTY_NOT_FOUND, dev->id?:"", name); | |
1116 | return NULL; | |
1117 | } | |
1118 | ||
1119 | return prop->type; | |
1120 | } | |
a5296ca9 AL |
1121 | |
1122 | /** | |
1123 | * Legacy property handling | |
1124 | */ | |
1125 | ||
1126 | static void qdev_get_legacy_property(DeviceState *dev, Visitor *v, void *opaque, | |
1127 | const char *name, Error **errp) | |
1128 | { | |
1129 | Property *prop = opaque; | |
1130 | ||
1131 | if (prop->info->print) { | |
1132 | char buffer[1024]; | |
1133 | char *ptr = buffer; | |
1134 | ||
1135 | prop->info->print(dev, prop, buffer, sizeof(buffer)); | |
1136 | visit_type_str(v, &ptr, name, errp); | |
1137 | } else { | |
1138 | error_set(errp, QERR_PERMISSION_DENIED); | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | static void qdev_set_legacy_property(DeviceState *dev, Visitor *v, void *opaque, | |
1143 | const char *name, Error **errp) | |
1144 | { | |
1145 | Property *prop = opaque; | |
1146 | ||
1147 | if (dev->state != DEV_STATE_CREATED) { | |
1148 | error_set(errp, QERR_PERMISSION_DENIED); | |
1149 | return; | |
1150 | } | |
1151 | ||
1152 | if (prop->info->parse) { | |
1153 | Error *local_err = NULL; | |
1154 | char *ptr = NULL; | |
1155 | ||
1156 | visit_type_str(v, &ptr, name, &local_err); | |
1157 | if (!local_err) { | |
1158 | int ret; | |
1159 | ret = prop->info->parse(dev, prop, ptr); | |
1160 | if (ret != 0) { | |
1161 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, | |
1162 | name, prop->info->name); | |
1163 | } | |
1164 | g_free(ptr); | |
1165 | } else { | |
1166 | error_propagate(errp, local_err); | |
1167 | } | |
1168 | } else { | |
1169 | error_set(errp, QERR_PERMISSION_DENIED); | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | /** | |
1174 | * @qdev_add_legacy_property - adds a legacy property | |
1175 | * | |
1176 | * Do not use this is new code! Properties added through this interface will | |
1177 | * be given types in the "legacy<>" type namespace. | |
1178 | * | |
1179 | * Legacy properties are always processed as strings. The format of the string | |
1180 | * depends on the property type. | |
1181 | */ | |
1182 | void qdev_property_add_legacy(DeviceState *dev, Property *prop, | |
1183 | Error **errp) | |
1184 | { | |
1185 | gchar *type; | |
1186 | ||
1187 | type = g_strdup_printf("legacy<%s>", prop->info->name); | |
1188 | ||
1189 | qdev_property_add(dev, prop->name, type, | |
1190 | qdev_get_legacy_property, | |
1191 | qdev_set_legacy_property, | |
1192 | NULL, | |
1193 | prop, errp); | |
1194 | ||
1195 | g_free(type); | |
1196 | } | |
a10f07a7 AL |
1197 | |
1198 | DeviceState *qdev_get_root(void) | |
1199 | { | |
1200 | static DeviceState *qdev_root; | |
1201 | ||
1202 | if (!qdev_root) { | |
1203 | qdev_root = qdev_create(NULL, "container"); | |
1204 | qdev_init_nofail(qdev_root); | |
1205 | } | |
1206 | ||
1207 | return qdev_root; | |
1208 | } | |
f9fbd2fd | 1209 | |
3de1c3e8 AL |
1210 | static void qdev_get_child_property(DeviceState *dev, Visitor *v, void *opaque, |
1211 | const char *name, Error **errp) | |
1212 | { | |
1213 | DeviceState *child = opaque; | |
1214 | gchar *path; | |
1215 | ||
1216 | path = qdev_get_canonical_path(child); | |
1217 | visit_type_str(v, &path, name, errp); | |
1218 | g_free(path); | |
1219 | } | |
1220 | ||
1221 | void qdev_property_add_child(DeviceState *dev, const char *name, | |
1222 | DeviceState *child, Error **errp) | |
1223 | { | |
1224 | gchar *type; | |
1225 | ||
1226 | type = g_strdup_printf("child<%s>", child->info->name); | |
1227 | ||
1228 | qdev_property_add(dev, name, type, qdev_get_child_property, | |
1229 | NULL, NULL, child, errp); | |
1230 | ||
1231 | qdev_ref(child); | |
b2b6c39a AL |
1232 | g_assert(child->parent == NULL); |
1233 | child->parent = dev; | |
3de1c3e8 AL |
1234 | |
1235 | g_free(type); | |
1236 | } | |
1237 | ||
83e94fb8 AL |
1238 | static void qdev_get_link_property(DeviceState *dev, Visitor *v, void *opaque, |
1239 | const char *name, Error **errp) | |
1240 | { | |
1241 | DeviceState **child = opaque; | |
1242 | gchar *path; | |
1243 | ||
1244 | if (*child) { | |
1245 | path = qdev_get_canonical_path(*child); | |
1246 | visit_type_str(v, &path, name, errp); | |
1247 | g_free(path); | |
1248 | } else { | |
1249 | path = (gchar *)""; | |
1250 | visit_type_str(v, &path, name, errp); | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | static void qdev_set_link_property(DeviceState *dev, Visitor *v, void *opaque, | |
1255 | const char *name, Error **errp) | |
1256 | { | |
1257 | DeviceState **child = opaque; | |
1258 | bool ambiguous = false; | |
1259 | const char *type; | |
1260 | char *path; | |
1261 | ||
1262 | type = qdev_property_get_type(dev, name, NULL); | |
1263 | ||
1264 | visit_type_str(v, &path, name, errp); | |
1265 | ||
1266 | if (*child) { | |
1267 | qdev_unref(*child); | |
1268 | } | |
1269 | ||
1270 | if (strcmp(path, "") != 0) { | |
1271 | DeviceState *target; | |
1272 | ||
1273 | target = qdev_resolve_path(path, &ambiguous); | |
1274 | if (target) { | |
1275 | gchar *target_type; | |
1276 | ||
1277 | target_type = g_strdup_printf("link<%s>", target->info->name); | |
1278 | if (strcmp(target_type, type) == 0) { | |
1279 | *child = target; | |
1280 | qdev_ref(target); | |
1281 | } else { | |
1282 | error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, type); | |
1283 | } | |
1284 | ||
1285 | g_free(target_type); | |
1286 | } else { | |
1287 | error_set(errp, QERR_DEVICE_NOT_FOUND, path); | |
1288 | } | |
1289 | } else { | |
1290 | *child = NULL; | |
1291 | } | |
1292 | ||
1293 | g_free(path); | |
1294 | } | |
1295 | ||
1296 | void qdev_property_add_link(DeviceState *dev, const char *name, | |
1297 | const char *type, DeviceState **child, | |
1298 | Error **errp) | |
1299 | { | |
1300 | gchar *full_type; | |
1301 | ||
1302 | full_type = g_strdup_printf("link<%s>", type); | |
1303 | ||
1304 | qdev_property_add(dev, name, full_type, | |
1305 | qdev_get_link_property, | |
1306 | qdev_set_link_property, | |
1307 | NULL, child, errp); | |
1308 | ||
1309 | g_free(full_type); | |
1310 | } | |
1311 | ||
b2b6c39a | 1312 | gchar *qdev_get_canonical_path(DeviceState *dev) |
f9fbd2fd | 1313 | { |
b2b6c39a AL |
1314 | DeviceState *root = qdev_get_root(); |
1315 | char *newpath = NULL, *path = NULL; | |
f9fbd2fd | 1316 | |
b2b6c39a AL |
1317 | while (dev != root) { |
1318 | DeviceProperty *prop = NULL; | |
f9fbd2fd | 1319 | |
b2b6c39a | 1320 | g_assert(dev->parent != NULL); |
f9fbd2fd | 1321 | |
b2b6c39a AL |
1322 | QTAILQ_FOREACH(prop, &dev->parent->properties, node) { |
1323 | if (!strstart(prop->type, "child<", NULL)) { | |
1324 | continue; | |
1325 | } | |
f9fbd2fd | 1326 | |
b2b6c39a AL |
1327 | if (prop->opaque == dev) { |
1328 | if (path) { | |
1329 | newpath = g_strdup_printf("%s/%s", prop->name, path); | |
1330 | g_free(path); | |
1331 | path = newpath; | |
1332 | } else { | |
1333 | path = g_strdup(prop->name); | |
1334 | } | |
1335 | break; | |
1336 | } | |
f9fbd2fd AL |
1337 | } |
1338 | ||
b2b6c39a | 1339 | g_assert(prop != NULL); |
f9fbd2fd | 1340 | |
b2b6c39a | 1341 | dev = dev->parent; |
f9fbd2fd AL |
1342 | } |
1343 | ||
f9fbd2fd AL |
1344 | newpath = g_strdup_printf("/%s", path); |
1345 | g_free(path); | |
1346 | ||
1347 | return newpath; | |
1348 | } | |
dc45c21f AL |
1349 | |
1350 | static DeviceState *qdev_resolve_abs_path(DeviceState *parent, | |
1351 | gchar **parts, | |
1352 | int index) | |
1353 | { | |
1354 | DeviceProperty *prop; | |
1355 | DeviceState *child; | |
1356 | ||
1357 | if (parts[index] == NULL) { | |
1358 | return parent; | |
1359 | } | |
1360 | ||
1361 | if (strcmp(parts[index], "") == 0) { | |
1362 | return qdev_resolve_abs_path(parent, parts, index + 1); | |
1363 | } | |
1364 | ||
1365 | prop = qdev_property_find(parent, parts[index]); | |
1366 | if (prop == NULL) { | |
1367 | return NULL; | |
1368 | } | |
1369 | ||
1370 | child = NULL; | |
1371 | if (strstart(prop->type, "link<", NULL)) { | |
1372 | DeviceState **pchild = prop->opaque; | |
1373 | if (*pchild) { | |
1374 | child = *pchild; | |
1375 | } | |
1376 | } else if (strstart(prop->type, "child<", NULL)) { | |
1377 | child = prop->opaque; | |
1378 | } | |
1379 | ||
1380 | if (!child) { | |
1381 | return NULL; | |
1382 | } | |
1383 | ||
1384 | return qdev_resolve_abs_path(child, parts, index + 1); | |
1385 | } | |
1386 | ||
1387 | static DeviceState *qdev_resolve_partial_path(DeviceState *parent, | |
1388 | gchar **parts, | |
1389 | bool *ambiguous) | |
1390 | { | |
1391 | DeviceState *dev; | |
1392 | DeviceProperty *prop; | |
1393 | ||
1394 | dev = qdev_resolve_abs_path(parent, parts, 0); | |
1395 | ||
1396 | QTAILQ_FOREACH(prop, &parent->properties, node) { | |
1397 | DeviceState *found; | |
1398 | ||
1399 | if (!strstart(prop->type, "child<", NULL)) { | |
1400 | continue; | |
1401 | } | |
1402 | ||
1403 | found = qdev_resolve_partial_path(prop->opaque, parts, ambiguous); | |
1404 | if (found) { | |
1405 | if (dev) { | |
1406 | if (ambiguous) { | |
1407 | *ambiguous = true; | |
1408 | } | |
1409 | return NULL; | |
1410 | } | |
1411 | dev = found; | |
1412 | } | |
1413 | ||
1414 | if (ambiguous && *ambiguous) { | |
1415 | return NULL; | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | return dev; | |
1420 | } | |
1421 | ||
1422 | DeviceState *qdev_resolve_path(const char *path, bool *ambiguous) | |
1423 | { | |
1424 | bool partial_path = true; | |
1425 | DeviceState *dev; | |
1426 | gchar **parts; | |
1427 | ||
1428 | parts = g_strsplit(path, "/", 0); | |
1429 | if (parts == NULL || parts[0] == NULL) { | |
1430 | g_strfreev(parts); | |
1431 | return qdev_get_root(); | |
1432 | } | |
1433 | ||
1434 | if (strcmp(parts[0], "") == 0) { | |
1435 | partial_path = false; | |
1436 | } | |
1437 | ||
1438 | if (partial_path) { | |
1439 | if (ambiguous) { | |
1440 | *ambiguous = false; | |
1441 | } | |
1442 | dev = qdev_resolve_partial_path(qdev_get_root(), parts, ambiguous); | |
1443 | } else { | |
1444 | dev = qdev_resolve_abs_path(qdev_get_root(), parts, 1); | |
1445 | } | |
1446 | ||
1447 | g_strfreev(parts); | |
1448 | ||
1449 | return dev; | |
1450 | } | |
1451 |