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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; | |
86 | ||
87 | assert(bus->info == info->bus_info); | |
7267c094 | 88 | dev = g_malloc0(info->size); |
0c17542d MA |
89 | dev->info = info; |
90 | dev->parent_bus = bus; | |
91 | qdev_prop_set_defaults(dev, dev->info->props); | |
92 | qdev_prop_set_defaults(dev, dev->parent_bus->info->props); | |
93 | qdev_prop_set_globals(dev); | |
d8bb00d6 | 94 | QTAILQ_INSERT_HEAD(&bus->children, dev, sibling); |
0c17542d MA |
95 | if (qdev_hotplug) { |
96 | assert(bus->allow_hotplug); | |
97 | dev->hotplugged = 1; | |
0ac8ef71 | 98 | qdev_hot_added = true; |
0c17542d | 99 | } |
4d2ffa08 | 100 | dev->instance_id_alias = -1; |
0c17542d MA |
101 | dev->state = DEV_STATE_CREATED; |
102 | return dev; | |
103 | } | |
104 | ||
aae9460e PB |
105 | /* Create a new device. This only initializes the device state structure |
106 | and allows properties to be set. qdev_init should be called to | |
107 | initialize the actual device emulation. */ | |
02e2da45 | 108 | DeviceState *qdev_create(BusState *bus, const char *name) |
0bcdeda7 BS |
109 | { |
110 | DeviceState *dev; | |
111 | ||
112 | dev = qdev_try_create(bus, name); | |
113 | if (!dev) { | |
e92714c7 PM |
114 | if (bus) { |
115 | hw_error("Unknown device '%s' for bus '%s'\n", name, | |
116 | bus->info->name); | |
117 | } else { | |
118 | hw_error("Unknown device '%s' for default sysbus\n", name); | |
119 | } | |
0bcdeda7 BS |
120 | } |
121 | ||
122 | return dev; | |
123 | } | |
124 | ||
125 | DeviceState *qdev_try_create(BusState *bus, const char *name) | |
aae9460e | 126 | { |
042f84d0 | 127 | DeviceInfo *info; |
aae9460e | 128 | |
10c4c98a | 129 | if (!bus) { |
68694897 | 130 | bus = sysbus_get_default(); |
10c4c98a GH |
131 | } |
132 | ||
81ebb98b | 133 | info = qdev_find_info(bus->info, name); |
042f84d0 | 134 | if (!info) { |
0bcdeda7 | 135 | return NULL; |
aae9460e PB |
136 | } |
137 | ||
0c17542d | 138 | return qdev_create_from_info(bus, info); |
aae9460e PB |
139 | } |
140 | ||
8a9662ca | 141 | static void qdev_print_devinfo(DeviceInfo *info) |
1b524b04 | 142 | { |
8a9662ca MA |
143 | error_printf("name \"%s\", bus %s", |
144 | info->name, info->bus_info->name); | |
22f2e344 | 145 | if (info->alias) { |
8a9662ca | 146 | error_printf(", alias \"%s\"", info->alias); |
22f2e344 GH |
147 | } |
148 | if (info->desc) { | |
8a9662ca | 149 | error_printf(", desc \"%s\"", info->desc); |
22f2e344 GH |
150 | } |
151 | if (info->no_user) { | |
8a9662ca | 152 | error_printf(", no-user"); |
22f2e344 | 153 | } |
8a9662ca | 154 | error_printf("\n"); |
1b524b04 GH |
155 | } |
156 | ||
f31d07d1 | 157 | static int set_property(const char *name, const char *value, void *opaque) |
8ffb1bcf | 158 | { |
f31d07d1 GH |
159 | DeviceState *dev = opaque; |
160 | ||
161 | if (strcmp(name, "driver") == 0) | |
162 | return 0; | |
163 | if (strcmp(name, "bus") == 0) | |
164 | return 0; | |
165 | ||
3df04ac3 | 166 | if (qdev_prop_parse(dev, name, value) == -1) { |
f31d07d1 GH |
167 | return -1; |
168 | } | |
169 | return 0; | |
170 | } | |
171 | ||
ff952ba2 MA |
172 | int qdev_device_help(QemuOpts *opts) |
173 | { | |
174 | const char *driver; | |
175 | DeviceInfo *info; | |
08350cf0 | 176 | Property *prop; |
ff952ba2 MA |
177 | |
178 | driver = qemu_opt_get(opts, "driver"); | |
179 | if (driver && !strcmp(driver, "?")) { | |
180 | for (info = device_info_list; info != NULL; info = info->next) { | |
c64eafaf MA |
181 | if (info->no_user) { |
182 | continue; /* not available, don't show */ | |
183 | } | |
8a9662ca | 184 | qdev_print_devinfo(info); |
ff952ba2 MA |
185 | } |
186 | return 1; | |
187 | } | |
188 | ||
542379f4 | 189 | if (!driver || !qemu_opt_get(opts, "?")) { |
08350cf0 MA |
190 | return 0; |
191 | } | |
192 | ||
193 | info = qdev_find_info(NULL, driver); | |
194 | if (!info) { | |
195 | return 0; | |
196 | } | |
197 | ||
198 | for (prop = info->props; prop && prop->name; prop++) { | |
036f7166 MA |
199 | /* |
200 | * TODO Properties without a parser are just for dirty hacks. | |
201 | * qdev_prop_ptr is the only such PropertyInfo. It's marked | |
202 | * for removal. This conditional should be removed along with | |
203 | * it. | |
204 | */ | |
205 | if (!prop->info->parse) { | |
206 | continue; /* no way to set it, don't show */ | |
207 | } | |
a8467c7a GH |
208 | error_printf("%s.%s=%s\n", info->name, prop->name, prop->info->name); |
209 | } | |
210 | for (prop = info->bus_info->props; prop && prop->name; prop++) { | |
211 | if (!prop->info->parse) { | |
212 | continue; /* no way to set it, don't show */ | |
213 | } | |
8a9662ca | 214 | error_printf("%s.%s=%s\n", info->name, prop->name, prop->info->name); |
08350cf0 MA |
215 | } |
216 | return 1; | |
ff952ba2 MA |
217 | } |
218 | ||
f31d07d1 GH |
219 | DeviceState *qdev_device_add(QemuOpts *opts) |
220 | { | |
221 | const char *driver, *path, *id; | |
8ffb1bcf GH |
222 | DeviceInfo *info; |
223 | DeviceState *qdev; | |
224 | BusState *bus; | |
8ffb1bcf | 225 | |
f31d07d1 GH |
226 | driver = qemu_opt_get(opts, "driver"); |
227 | if (!driver) { | |
0204276b | 228 | qerror_report(QERR_MISSING_PARAMETER, "driver"); |
8ffb1bcf GH |
229 | return NULL; |
230 | } | |
f31d07d1 GH |
231 | |
232 | /* find driver */ | |
8ffb1bcf | 233 | info = qdev_find_info(NULL, driver); |
c64eafaf | 234 | if (!info || info->no_user) { |
e17ba87c | 235 | qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "a driver name"); |
0204276b | 236 | error_printf_unless_qmp("Try with argument '?' for a list.\n"); |
8ffb1bcf GH |
237 | return NULL; |
238 | } | |
8ffb1bcf | 239 | |
f31d07d1 GH |
240 | /* find bus */ |
241 | path = qemu_opt_get(opts, "bus"); | |
242 | if (path != NULL) { | |
8ffb1bcf | 243 | bus = qbus_find(path); |
ac8dae67 MA |
244 | if (!bus) { |
245 | return NULL; | |
246 | } | |
247 | if (bus->info != info->bus_info) { | |
0204276b MA |
248 | qerror_report(QERR_BAD_BUS_FOR_DEVICE, |
249 | driver, bus->info->name); | |
327867b6 MA |
250 | return NULL; |
251 | } | |
8ffb1bcf GH |
252 | } else { |
253 | bus = qbus_find_recursive(main_system_bus, NULL, info->bus_info); | |
ac8dae67 | 254 | if (!bus) { |
0204276b MA |
255 | qerror_report(QERR_NO_BUS_FOR_DEVICE, |
256 | info->name, info->bus_info->name); | |
ac8dae67 MA |
257 | return NULL; |
258 | } | |
75570088 | 259 | } |
3418bd25 | 260 | if (qdev_hotplug && !bus->allow_hotplug) { |
0204276b | 261 | qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); |
3418bd25 GH |
262 | return NULL; |
263 | } | |
8ffb1bcf | 264 | |
f31d07d1 | 265 | /* create device, set properties */ |
0c17542d | 266 | qdev = qdev_create_from_info(bus, info); |
f31d07d1 GH |
267 | id = qemu_opts_id(opts); |
268 | if (id) { | |
269 | qdev->id = id; | |
270 | } | |
271 | if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) { | |
272 | qdev_free(qdev); | |
273 | return NULL; | |
8ffb1bcf | 274 | } |
5c17ca25 | 275 | if (qdev_init(qdev) < 0) { |
0204276b | 276 | qerror_report(QERR_DEVICE_INIT_FAILED, driver); |
81a322d4 GH |
277 | return NULL; |
278 | } | |
ef80b466 | 279 | qdev->opts = opts; |
8ffb1bcf GH |
280 | return qdev; |
281 | } | |
282 | ||
aae9460e PB |
283 | /* Initialize a device. Device properties should be set before calling |
284 | this function. IRQs and MMIO regions should be connected/mapped after | |
18cfeb52 MA |
285 | calling this function. |
286 | On failure, destroy the device and return negative value. | |
287 | Return 0 on success. */ | |
81a322d4 | 288 | int qdev_init(DeviceState *dev) |
aae9460e | 289 | { |
959f733a GH |
290 | int rc; |
291 | ||
131ec1bd | 292 | assert(dev->state == DEV_STATE_CREATED); |
959f733a | 293 | rc = dev->info->init(dev, dev->info); |
18cfeb52 MA |
294 | if (rc < 0) { |
295 | qdev_free(dev); | |
959f733a | 296 | return rc; |
18cfeb52 | 297 | } |
4d2ffa08 | 298 | if (dev->info->vmsd) { |
0be71e32 | 299 | vmstate_register_with_alias_id(dev, -1, dev->info->vmsd, dev, |
4d2ffa08 JK |
300 | dev->instance_id_alias, |
301 | dev->alias_required_for_version); | |
302 | } | |
131ec1bd | 303 | dev->state = DEV_STATE_INITIALIZED; |
5ab28c83 JK |
304 | if (dev->hotplugged && dev->info->reset) { |
305 | dev->info->reset(dev); | |
306 | } | |
959f733a | 307 | return 0; |
02e2da45 PB |
308 | } |
309 | ||
4d2ffa08 JK |
310 | void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
311 | int required_for_version) | |
312 | { | |
313 | assert(dev->state == DEV_STATE_CREATED); | |
314 | dev->instance_id_alias = alias_id; | |
315 | dev->alias_required_for_version = required_for_version; | |
316 | } | |
317 | ||
3418bd25 GH |
318 | int qdev_unplug(DeviceState *dev) |
319 | { | |
320 | if (!dev->parent_bus->allow_hotplug) { | |
cc601cb7 | 321 | qerror_report(QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
3418bd25 GH |
322 | return -1; |
323 | } | |
593831de AS |
324 | assert(dev->info->unplug != NULL); |
325 | ||
85ed303b AL |
326 | if (dev->ref != 0) { |
327 | qerror_report(QERR_DEVICE_IN_USE, dev->id?:""); | |
328 | return -1; | |
329 | } | |
330 | ||
0ac8ef71 AW |
331 | qdev_hot_removed = true; |
332 | ||
3418bd25 GH |
333 | return dev->info->unplug(dev); |
334 | } | |
335 | ||
ec990eb6 AL |
336 | static int qdev_reset_one(DeviceState *dev, void *opaque) |
337 | { | |
338 | if (dev->info->reset) { | |
339 | dev->info->reset(dev); | |
340 | } | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | BusState *sysbus_get_default(void) | |
346 | { | |
68694897 | 347 | if (!main_system_bus) { |
2da8bb92 | 348 | main_system_bus_create(); |
68694897 | 349 | } |
ec990eb6 AL |
350 | return main_system_bus; |
351 | } | |
352 | ||
b4694b7c IY |
353 | static int qbus_reset_one(BusState *bus, void *opaque) |
354 | { | |
355 | if (bus->info->reset) { | |
356 | return bus->info->reset(bus); | |
357 | } | |
358 | return 0; | |
359 | } | |
360 | ||
5af0a04b IY |
361 | void qdev_reset_all(DeviceState *dev) |
362 | { | |
363 | qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); | |
364 | } | |
365 | ||
80376c3f IY |
366 | void qbus_reset_all_fn(void *opaque) |
367 | { | |
368 | BusState *bus = opaque; | |
f530cce3 | 369 | qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); |
80376c3f IY |
370 | } |
371 | ||
3418bd25 GH |
372 | /* can be used as ->unplug() callback for the simple cases */ |
373 | int qdev_simple_unplug_cb(DeviceState *dev) | |
374 | { | |
375 | /* just zap it */ | |
376 | qdev_free(dev); | |
377 | return 0; | |
378 | } | |
379 | ||
3b29a101 MT |
380 | |
381 | /* Like qdev_init(), but terminate program via error_report() instead of | |
e23a1b33 MA |
382 | returning an error value. This is okay during machine creation. |
383 | Don't use for hotplug, because there callers need to recover from | |
384 | failure. Exception: if you know the device's init() callback can't | |
385 | fail, then qdev_init_nofail() can't fail either, and is therefore | |
386 | usable even then. But relying on the device implementation that | |
387 | way is somewhat unclean, and best avoided. */ | |
388 | void qdev_init_nofail(DeviceState *dev) | |
389 | { | |
390 | DeviceInfo *info = dev->info; | |
391 | ||
bd6c9a61 | 392 | if (qdev_init(dev) < 0) { |
6daf194d | 393 | error_report("Initialization of device %s failed", info->name); |
bd6c9a61 MA |
394 | exit(1); |
395 | } | |
e23a1b33 MA |
396 | } |
397 | ||
02e2da45 PB |
398 | /* Unlink device from bus and free the structure. */ |
399 | void qdev_free(DeviceState *dev) | |
400 | { | |
131ec1bd | 401 | BusState *bus; |
d21357df | 402 | Property *prop; |
131ec1bd GH |
403 | |
404 | if (dev->state == DEV_STATE_INITIALIZED) { | |
405 | while (dev->num_child_bus) { | |
406 | bus = QLIST_FIRST(&dev->child_bus); | |
407 | qbus_free(bus); | |
408 | } | |
131ec1bd | 409 | if (dev->info->vmsd) |
0be71e32 | 410 | vmstate_unregister(dev, dev->info->vmsd, dev); |
d29275f1 GH |
411 | if (dev->info->exit) |
412 | dev->info->exit(dev); | |
ef80b466 GH |
413 | if (dev->opts) |
414 | qemu_opts_del(dev->opts); | |
131ec1bd | 415 | } |
d8bb00d6 | 416 | QTAILQ_REMOVE(&dev->parent_bus->children, dev, sibling); |
d21357df MA |
417 | for (prop = dev->info->props; prop && prop->name; prop++) { |
418 | if (prop->info->free) { | |
419 | prop->info->free(dev, prop); | |
420 | } | |
421 | } | |
7267c094 | 422 | g_free(dev); |
aae9460e PB |
423 | } |
424 | ||
3418bd25 GH |
425 | void qdev_machine_creation_done(void) |
426 | { | |
427 | /* | |
428 | * ok, initial machine setup is done, starting from now we can | |
429 | * only create hotpluggable devices | |
430 | */ | |
431 | qdev_hotplug = 1; | |
432 | } | |
433 | ||
0ac8ef71 AW |
434 | bool qdev_machine_modified(void) |
435 | { | |
436 | return qdev_hot_added || qdev_hot_removed; | |
437 | } | |
438 | ||
aae9460e PB |
439 | /* Get a character (serial) device interface. */ |
440 | CharDriverState *qdev_init_chardev(DeviceState *dev) | |
441 | { | |
442 | static int next_serial; | |
98b19252 AS |
443 | |
444 | /* FIXME: This function needs to go away: use chardev properties! */ | |
445 | return serial_hds[next_serial++]; | |
aae9460e PB |
446 | } |
447 | ||
02e2da45 | 448 | BusState *qdev_get_parent_bus(DeviceState *dev) |
aae9460e | 449 | { |
02e2da45 | 450 | return dev->parent_bus; |
aae9460e PB |
451 | } |
452 | ||
aae9460e PB |
453 | void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
454 | { | |
455 | assert(dev->num_gpio_in == 0); | |
456 | dev->num_gpio_in = n; | |
457 | dev->gpio_in = qemu_allocate_irqs(handler, dev, n); | |
458 | } | |
459 | ||
460 | void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) | |
461 | { | |
462 | assert(dev->num_gpio_out == 0); | |
463 | dev->num_gpio_out = n; | |
464 | dev->gpio_out = pins; | |
465 | } | |
466 | ||
467 | qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) | |
468 | { | |
469 | assert(n >= 0 && n < dev->num_gpio_in); | |
470 | return dev->gpio_in[n]; | |
471 | } | |
472 | ||
473 | void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) | |
474 | { | |
475 | assert(n >= 0 && n < dev->num_gpio_out); | |
476 | dev->gpio_out[n] = pin; | |
477 | } | |
478 | ||
ed16ab5a GH |
479 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) |
480 | { | |
6eed1856 | 481 | qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); |
ed16ab5a GH |
482 | if (nd->vlan) |
483 | qdev_prop_set_vlan(dev, "vlan", nd->vlan); | |
484 | if (nd->netdev) | |
485 | qdev_prop_set_netdev(dev, "netdev", nd->netdev); | |
75422b0d | 486 | if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && |
97b15621 GH |
487 | qdev_prop_exists(dev, "vectors")) { |
488 | qdev_prop_set_uint32(dev, "vectors", nd->nvectors); | |
489 | } | |
48e2faf2 | 490 | nd->instantiated = 1; |
ed16ab5a GH |
491 | } |
492 | ||
02e2da45 | 493 | BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
4d6ae674 | 494 | { |
02e2da45 | 495 | BusState *bus; |
4d6ae674 | 496 | |
72cf2d4f | 497 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
4d6ae674 | 498 | if (strcmp(name, bus->name) == 0) { |
02e2da45 | 499 | return bus; |
4d6ae674 PB |
500 | } |
501 | } | |
502 | return NULL; | |
503 | } | |
504 | ||
81699d8a AL |
505 | int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
506 | qbus_walkerfn *busfn, void *opaque) | |
507 | { | |
508 | DeviceState *dev; | |
509 | int err; | |
510 | ||
511 | if (busfn) { | |
512 | err = busfn(bus, opaque); | |
513 | if (err) { | |
514 | return err; | |
515 | } | |
516 | } | |
517 | ||
d8bb00d6 | 518 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
81699d8a AL |
519 | err = qdev_walk_children(dev, devfn, busfn, opaque); |
520 | if (err < 0) { | |
521 | return err; | |
522 | } | |
523 | } | |
524 | ||
525 | return 0; | |
526 | } | |
527 | ||
528 | int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, | |
529 | qbus_walkerfn *busfn, void *opaque) | |
530 | { | |
531 | BusState *bus; | |
532 | int err; | |
533 | ||
534 | if (devfn) { | |
535 | err = devfn(dev, opaque); | |
536 | if (err) { | |
537 | return err; | |
538 | } | |
539 | } | |
540 | ||
541 | QLIST_FOREACH(bus, &dev->child_bus, sibling) { | |
542 | err = qbus_walk_children(bus, devfn, busfn, opaque); | |
543 | if (err < 0) { | |
544 | return err; | |
545 | } | |
546 | } | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
8ffb1bcf GH |
551 | static BusState *qbus_find_recursive(BusState *bus, const char *name, |
552 | const BusInfo *info) | |
553 | { | |
554 | DeviceState *dev; | |
555 | BusState *child, *ret; | |
556 | int match = 1; | |
557 | ||
558 | if (name && (strcmp(bus->name, name) != 0)) { | |
559 | match = 0; | |
560 | } | |
561 | if (info && (bus->info != info)) { | |
562 | match = 0; | |
563 | } | |
564 | if (match) { | |
565 | return bus; | |
566 | } | |
567 | ||
d8bb00d6 | 568 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
72cf2d4f | 569 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
8ffb1bcf GH |
570 | ret = qbus_find_recursive(child, name, info); |
571 | if (ret) { | |
572 | return ret; | |
573 | } | |
574 | } | |
575 | } | |
576 | return NULL; | |
577 | } | |
578 | ||
a2ee6b4f | 579 | DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
3418bd25 GH |
580 | { |
581 | DeviceState *dev, *ret; | |
582 | BusState *child; | |
583 | ||
d8bb00d6 | 584 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
3418bd25 GH |
585 | if (dev->id && strcmp(dev->id, id) == 0) |
586 | return dev; | |
587 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
588 | ret = qdev_find_recursive(child, id); | |
589 | if (ret) { | |
590 | return ret; | |
591 | } | |
592 | } | |
593 | } | |
594 | return NULL; | |
595 | } | |
596 | ||
53db16b5 | 597 | static void qbus_list_bus(DeviceState *dev) |
8ffb1bcf GH |
598 | { |
599 | BusState *child; | |
600 | const char *sep = " "; | |
8ffb1bcf | 601 | |
53db16b5 MA |
602 | error_printf("child busses at \"%s\":", |
603 | dev->id ? dev->id : dev->info->name); | |
72cf2d4f | 604 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
53db16b5 | 605 | error_printf("%s\"%s\"", sep, child->name); |
8ffb1bcf GH |
606 | sep = ", "; |
607 | } | |
53db16b5 | 608 | error_printf("\n"); |
8ffb1bcf GH |
609 | } |
610 | ||
53db16b5 | 611 | static void qbus_list_dev(BusState *bus) |
8ffb1bcf GH |
612 | { |
613 | DeviceState *dev; | |
614 | const char *sep = " "; | |
8ffb1bcf | 615 | |
53db16b5 | 616 | error_printf("devices at \"%s\":", bus->name); |
d8bb00d6 | 617 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
53db16b5 | 618 | error_printf("%s\"%s\"", sep, dev->info->name); |
8ffb1bcf | 619 | if (dev->id) |
53db16b5 | 620 | error_printf("/\"%s\"", dev->id); |
8ffb1bcf GH |
621 | sep = ", "; |
622 | } | |
53db16b5 | 623 | error_printf("\n"); |
8ffb1bcf GH |
624 | } |
625 | ||
626 | static BusState *qbus_find_bus(DeviceState *dev, char *elem) | |
627 | { | |
628 | BusState *child; | |
629 | ||
72cf2d4f | 630 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
8ffb1bcf GH |
631 | if (strcmp(child->name, elem) == 0) { |
632 | return child; | |
633 | } | |
634 | } | |
635 | return NULL; | |
636 | } | |
637 | ||
638 | static DeviceState *qbus_find_dev(BusState *bus, char *elem) | |
639 | { | |
640 | DeviceState *dev; | |
641 | ||
642 | /* | |
643 | * try to match in order: | |
644 | * (1) instance id, if present | |
645 | * (2) driver name | |
646 | * (3) driver alias, if present | |
647 | */ | |
d8bb00d6 | 648 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
8ffb1bcf GH |
649 | if (dev->id && strcmp(dev->id, elem) == 0) { |
650 | return dev; | |
651 | } | |
652 | } | |
d8bb00d6 | 653 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
8ffb1bcf GH |
654 | if (strcmp(dev->info->name, elem) == 0) { |
655 | return dev; | |
656 | } | |
657 | } | |
d8bb00d6 | 658 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
8ffb1bcf GH |
659 | if (dev->info->alias && strcmp(dev->info->alias, elem) == 0) { |
660 | return dev; | |
661 | } | |
662 | } | |
663 | return NULL; | |
664 | } | |
665 | ||
666 | static BusState *qbus_find(const char *path) | |
667 | { | |
668 | DeviceState *dev; | |
669 | BusState *bus; | |
53db16b5 | 670 | char elem[128]; |
8ffb1bcf GH |
671 | int pos, len; |
672 | ||
673 | /* find start element */ | |
674 | if (path[0] == '/') { | |
675 | bus = main_system_bus; | |
676 | pos = 0; | |
677 | } else { | |
678 | if (sscanf(path, "%127[^/]%n", elem, &len) != 1) { | |
fc98eb43 MA |
679 | assert(!path[0]); |
680 | elem[0] = len = 0; | |
8ffb1bcf GH |
681 | } |
682 | bus = qbus_find_recursive(main_system_bus, elem, NULL); | |
683 | if (!bus) { | |
ac8dae67 | 684 | qerror_report(QERR_BUS_NOT_FOUND, elem); |
8ffb1bcf GH |
685 | return NULL; |
686 | } | |
687 | pos = len; | |
688 | } | |
689 | ||
690 | for (;;) { | |
fc98eb43 MA |
691 | assert(path[pos] == '/' || !path[pos]); |
692 | while (path[pos] == '/') { | |
693 | pos++; | |
694 | } | |
8ffb1bcf | 695 | if (path[pos] == '\0') { |
8ffb1bcf GH |
696 | return bus; |
697 | } | |
698 | ||
699 | /* find device */ | |
fc98eb43 MA |
700 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
701 | assert(0); | |
702 | elem[0] = len = 0; | |
8ffb1bcf GH |
703 | } |
704 | pos += len; | |
705 | dev = qbus_find_dev(bus, elem); | |
706 | if (!dev) { | |
ac8dae67 | 707 | qerror_report(QERR_DEVICE_NOT_FOUND, elem); |
8bc27249 MA |
708 | if (!monitor_cur_is_qmp()) { |
709 | qbus_list_dev(bus); | |
710 | } | |
8ffb1bcf GH |
711 | return NULL; |
712 | } | |
fc98eb43 MA |
713 | |
714 | assert(path[pos] == '/' || !path[pos]); | |
715 | while (path[pos] == '/') { | |
716 | pos++; | |
717 | } | |
8ffb1bcf GH |
718 | if (path[pos] == '\0') { |
719 | /* last specified element is a device. If it has exactly | |
720 | * one child bus accept it nevertheless */ | |
721 | switch (dev->num_child_bus) { | |
722 | case 0: | |
ac8dae67 | 723 | qerror_report(QERR_DEVICE_NO_BUS, elem); |
8ffb1bcf GH |
724 | return NULL; |
725 | case 1: | |
72cf2d4f | 726 | return QLIST_FIRST(&dev->child_bus); |
8ffb1bcf | 727 | default: |
ac8dae67 | 728 | qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem); |
8bc27249 MA |
729 | if (!monitor_cur_is_qmp()) { |
730 | qbus_list_bus(dev); | |
731 | } | |
8ffb1bcf GH |
732 | return NULL; |
733 | } | |
734 | } | |
735 | ||
736 | /* find bus */ | |
fc98eb43 MA |
737 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
738 | assert(0); | |
739 | elem[0] = len = 0; | |
8ffb1bcf GH |
740 | } |
741 | pos += len; | |
742 | bus = qbus_find_bus(dev, elem); | |
743 | if (!bus) { | |
ac8dae67 | 744 | qerror_report(QERR_BUS_NOT_FOUND, elem); |
8bc27249 MA |
745 | if (!monitor_cur_is_qmp()) { |
746 | qbus_list_bus(dev); | |
747 | } | |
8ffb1bcf GH |
748 | return NULL; |
749 | } | |
750 | } | |
751 | } | |
752 | ||
cd739fb6 GH |
753 | void qbus_create_inplace(BusState *bus, BusInfo *info, |
754 | DeviceState *parent, const char *name) | |
02e2da45 | 755 | { |
d271de9f GH |
756 | char *buf; |
757 | int i,len; | |
02e2da45 | 758 | |
10c4c98a | 759 | bus->info = info; |
02e2da45 | 760 | bus->parent = parent; |
d271de9f GH |
761 | |
762 | if (name) { | |
763 | /* use supplied name */ | |
7267c094 | 764 | bus->name = g_strdup(name); |
d271de9f GH |
765 | } else if (parent && parent->id) { |
766 | /* parent device has id -> use it for bus name */ | |
767 | len = strlen(parent->id) + 16; | |
7267c094 | 768 | buf = g_malloc(len); |
d271de9f GH |
769 | snprintf(buf, len, "%s.%d", parent->id, parent->num_child_bus); |
770 | bus->name = buf; | |
771 | } else { | |
772 | /* no id -> use lowercase bus type for bus name */ | |
773 | len = strlen(info->name) + 16; | |
7267c094 | 774 | buf = g_malloc(len); |
d271de9f GH |
775 | len = snprintf(buf, len, "%s.%d", info->name, |
776 | parent ? parent->num_child_bus : 0); | |
777 | for (i = 0; i < len; i++) | |
bb87ece5 | 778 | buf[i] = qemu_tolower(buf[i]); |
d271de9f GH |
779 | bus->name = buf; |
780 | } | |
781 | ||
d8bb00d6 | 782 | QTAILQ_INIT(&bus->children); |
02e2da45 | 783 | if (parent) { |
72cf2d4f | 784 | QLIST_INSERT_HEAD(&parent->child_bus, bus, sibling); |
d271de9f | 785 | parent->num_child_bus++; |
80376c3f IY |
786 | } else if (bus != main_system_bus) { |
787 | /* TODO: once all bus devices are qdevified, | |
788 | only reset handler for main_system_bus should be registered here. */ | |
789 | qemu_register_reset(qbus_reset_all_fn, bus); | |
02e2da45 | 790 | } |
cd739fb6 GH |
791 | } |
792 | ||
793 | BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name) | |
794 | { | |
795 | BusState *bus; | |
796 | ||
7267c094 | 797 | bus = g_malloc0(info->size); |
cd739fb6 GH |
798 | bus->qdev_allocated = 1; |
799 | qbus_create_inplace(bus, info, parent, name); | |
02e2da45 PB |
800 | return bus; |
801 | } | |
cae4956e | 802 | |
2da8bb92 IY |
803 | static void main_system_bus_create(void) |
804 | { | |
805 | /* assign main_system_bus before qbus_create_inplace() | |
806 | * in order to make "if (bus != main_system_bus)" work */ | |
7267c094 | 807 | main_system_bus = g_malloc0(system_bus_info.size); |
2da8bb92 IY |
808 | main_system_bus->qdev_allocated = 1; |
809 | qbus_create_inplace(main_system_bus, &system_bus_info, NULL, | |
810 | "main-system-bus"); | |
811 | } | |
812 | ||
131ec1bd GH |
813 | void qbus_free(BusState *bus) |
814 | { | |
815 | DeviceState *dev; | |
816 | ||
d8bb00d6 | 817 | while ((dev = QTAILQ_FIRST(&bus->children)) != NULL) { |
131ec1bd GH |
818 | qdev_free(dev); |
819 | } | |
820 | if (bus->parent) { | |
821 | QLIST_REMOVE(bus, sibling); | |
822 | bus->parent->num_child_bus--; | |
80376c3f IY |
823 | } else { |
824 | assert(bus != main_system_bus); /* main_system_bus is never freed */ | |
825 | qemu_unregister_reset(qbus_reset_all_fn, bus); | |
131ec1bd | 826 | } |
7267c094 | 827 | g_free((void*)bus->name); |
131ec1bd | 828 | if (bus->qdev_allocated) { |
7267c094 | 829 | g_free(bus); |
131ec1bd GH |
830 | } |
831 | } | |
832 | ||
cae4956e GH |
833 | #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) |
834 | static void qbus_print(Monitor *mon, BusState *bus, int indent); | |
835 | ||
ee6847d1 GH |
836 | static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, |
837 | const char *prefix, int indent) | |
838 | { | |
839 | char buf[64]; | |
840 | ||
841 | if (!props) | |
842 | return; | |
843 | while (props->name) { | |
036f7166 MA |
844 | /* |
845 | * TODO Properties without a print method are just for dirty | |
846 | * hacks. qdev_prop_ptr is the only such PropertyInfo. It's | |
847 | * marked for removal. The test props->info->print should be | |
848 | * removed along with it. | |
849 | */ | |
ee6847d1 GH |
850 | if (props->info->print) { |
851 | props->info->print(dev, props, buf, sizeof(buf)); | |
852 | qdev_printf("%s-prop: %s = %s\n", prefix, props->name, buf); | |
853 | } | |
854 | props++; | |
855 | } | |
856 | } | |
857 | ||
cae4956e GH |
858 | static void qdev_print(Monitor *mon, DeviceState *dev, int indent) |
859 | { | |
cae4956e | 860 | BusState *child; |
ccb63de3 GH |
861 | qdev_printf("dev: %s, id \"%s\"\n", dev->info->name, |
862 | dev->id ? dev->id : ""); | |
cae4956e GH |
863 | indent += 2; |
864 | if (dev->num_gpio_in) { | |
865 | qdev_printf("gpio-in %d\n", dev->num_gpio_in); | |
866 | } | |
867 | if (dev->num_gpio_out) { | |
868 | qdev_printf("gpio-out %d\n", dev->num_gpio_out); | |
869 | } | |
ee6847d1 GH |
870 | qdev_print_props(mon, dev, dev->info->props, "dev", indent); |
871 | qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent); | |
10c4c98a GH |
872 | if (dev->parent_bus->info->print_dev) |
873 | dev->parent_bus->info->print_dev(mon, dev, indent); | |
72cf2d4f | 874 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
cae4956e GH |
875 | qbus_print(mon, child, indent); |
876 | } | |
877 | } | |
878 | ||
879 | static void qbus_print(Monitor *mon, BusState *bus, int indent) | |
880 | { | |
881 | struct DeviceState *dev; | |
882 | ||
883 | qdev_printf("bus: %s\n", bus->name); | |
884 | indent += 2; | |
10c4c98a | 885 | qdev_printf("type %s\n", bus->info->name); |
d8bb00d6 | 886 | QTAILQ_FOREACH(dev, &bus->children, sibling) { |
cae4956e GH |
887 | qdev_print(mon, dev, indent); |
888 | } | |
889 | } | |
890 | #undef qdev_printf | |
891 | ||
892 | void do_info_qtree(Monitor *mon) | |
893 | { | |
894 | if (main_system_bus) | |
895 | qbus_print(mon, main_system_bus, 0); | |
896 | } | |
9316d30f | 897 | |
f6c64e0e | 898 | void do_info_qdm(Monitor *mon) |
9316d30f GH |
899 | { |
900 | DeviceInfo *info; | |
9316d30f GH |
901 | |
902 | for (info = device_info_list; info != NULL; info = info->next) { | |
8a9662ca | 903 | qdev_print_devinfo(info); |
9316d30f GH |
904 | } |
905 | } | |
3418bd25 | 906 | |
8bc27249 | 907 | int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
3418bd25 GH |
908 | { |
909 | QemuOpts *opts; | |
910 | ||
3329f07b | 911 | opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict); |
8bc27249 MA |
912 | if (!opts) { |
913 | return -1; | |
914 | } | |
915 | if (!monitor_cur_is_qmp() && qdev_device_help(opts)) { | |
916 | qemu_opts_del(opts); | |
917 | return 0; | |
0f853a38 | 918 | } |
8bc27249 MA |
919 | if (!qdev_device_add(opts)) { |
920 | qemu_opts_del(opts); | |
921 | return -1; | |
922 | } | |
923 | return 0; | |
3418bd25 GH |
924 | } |
925 | ||
17a38eaa | 926 | int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
3418bd25 GH |
927 | { |
928 | const char *id = qdict_get_str(qdict, "id"); | |
929 | DeviceState *dev; | |
930 | ||
931 | dev = qdev_find_recursive(main_system_bus, id); | |
932 | if (NULL == dev) { | |
17a38eaa MA |
933 | qerror_report(QERR_DEVICE_NOT_FOUND, id); |
934 | return -1; | |
3418bd25 | 935 | } |
17a38eaa | 936 | return qdev_unplug(dev); |
3418bd25 | 937 | } |
1ca4d09a GN |
938 | |
939 | static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) | |
940 | { | |
941 | int l = 0; | |
942 | ||
943 | if (dev && dev->parent_bus) { | |
944 | char *d; | |
945 | l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); | |
946 | if (dev->parent_bus->info->get_fw_dev_path) { | |
947 | d = dev->parent_bus->info->get_fw_dev_path(dev); | |
948 | l += snprintf(p + l, size - l, "%s", d); | |
7267c094 | 949 | g_free(d); |
1ca4d09a GN |
950 | } else { |
951 | l += snprintf(p + l, size - l, "%s", dev->info->name); | |
952 | } | |
953 | } | |
954 | l += snprintf(p + l , size - l, "/"); | |
955 | ||
956 | return l; | |
957 | } | |
958 | ||
959 | char* qdev_get_fw_dev_path(DeviceState *dev) | |
960 | { | |
961 | char path[128]; | |
962 | int l; | |
963 | ||
964 | l = qdev_get_fw_dev_path_helper(dev, path, 128); | |
965 | ||
966 | path[l-1] = '\0'; | |
967 | ||
968 | return strdup(path); | |
969 | } | |
85ed303b AL |
970 | |
971 | void qdev_ref(DeviceState *dev) | |
972 | { | |
973 | dev->ref++; | |
974 | } | |
975 | ||
976 | void qdev_unref(DeviceState *dev) | |
977 | { | |
978 | g_assert(dev->ref > 0); | |
979 | dev->ref--; | |
980 | } |