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ee46d8a5 AL |
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 | |
17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "qdev.h" | |
21 | #include "monitor.h" | |
22 | ||
23 | /* | |
24 | * Aliases were a bad idea from the start. Let's keep them | |
25 | * from spreading further. | |
26 | */ | |
27 | typedef struct QDevAlias | |
28 | { | |
29 | const char *typename; | |
30 | const char *alias; | |
31 | } QDevAlias; | |
32 | ||
33 | static const QDevAlias qdev_alias_table[] = { | |
34 | { "virtio-blk-pci", "virtio-blk" }, | |
35 | { "virtio-net-pci", "virtio-net" }, | |
36 | { "virtio-serial-pci", "virtio-serial" }, | |
37 | { "virtio-balloon-pci", "virtio-balloon" }, | |
38 | { "virtio-blk-s390", "virtio-blk" }, | |
39 | { "virtio-net-s390", "virtio-net" }, | |
40 | { "virtio-serial-s390", "virtio-serial" }, | |
41 | { "lsi53c895a", "lsi" }, | |
42 | { "ich9-ahci", "ahci" }, | |
43 | { } | |
44 | }; | |
45 | ||
46 | static const char *qdev_class_get_alias(DeviceClass *dc) | |
47 | { | |
48 | const char *typename = object_class_get_name(OBJECT_CLASS(dc)); | |
49 | int i; | |
50 | ||
51 | for (i = 0; qdev_alias_table[i].typename; i++) { | |
52 | if (strcmp(qdev_alias_table[i].typename, typename) == 0) { | |
53 | return qdev_alias_table[i].alias; | |
54 | } | |
55 | } | |
56 | ||
57 | return NULL; | |
58 | } | |
59 | ||
60 | static bool qdev_class_has_alias(DeviceClass *dc) | |
61 | { | |
62 | return (qdev_class_get_alias(dc) != NULL); | |
63 | } | |
64 | ||
65 | static void qdev_print_devinfo(ObjectClass *klass, void *opaque) | |
66 | { | |
67 | DeviceClass *dc; | |
68 | bool *show_no_user = opaque; | |
69 | ||
70 | dc = (DeviceClass *)object_class_dynamic_cast(klass, TYPE_DEVICE); | |
71 | ||
72 | if (!dc || (show_no_user && !*show_no_user && dc->no_user)) { | |
73 | return; | |
74 | } | |
75 | ||
76 | error_printf("name \"%s\"", object_class_get_name(klass)); | |
77 | if (dc->bus_info) { | |
78 | error_printf(", bus %s", dc->bus_info->name); | |
79 | } | |
80 | if (qdev_class_has_alias(dc)) { | |
81 | error_printf(", alias \"%s\"", qdev_class_get_alias(dc)); | |
82 | } | |
83 | if (dc->desc) { | |
84 | error_printf(", desc \"%s\"", dc->desc); | |
85 | } | |
86 | if (dc->no_user) { | |
87 | error_printf(", no-user"); | |
88 | } | |
89 | error_printf("\n"); | |
90 | } | |
91 | ||
92 | static int set_property(const char *name, const char *value, void *opaque) | |
93 | { | |
94 | DeviceState *dev = opaque; | |
95 | ||
96 | if (strcmp(name, "driver") == 0) | |
97 | return 0; | |
98 | if (strcmp(name, "bus") == 0) | |
99 | return 0; | |
100 | ||
101 | if (qdev_prop_parse(dev, name, value) == -1) { | |
102 | return -1; | |
103 | } | |
104 | return 0; | |
105 | } | |
106 | ||
107 | static const char *find_typename_by_alias(const char *alias) | |
108 | { | |
109 | int i; | |
110 | ||
111 | for (i = 0; qdev_alias_table[i].alias; i++) { | |
112 | if (strcmp(qdev_alias_table[i].alias, alias) == 0) { | |
113 | return qdev_alias_table[i].typename; | |
114 | } | |
115 | } | |
116 | ||
117 | return NULL; | |
118 | } | |
119 | ||
120 | int qdev_device_help(QemuOpts *opts) | |
121 | { | |
122 | const char *driver; | |
123 | Property *prop; | |
124 | ObjectClass *klass; | |
125 | DeviceClass *info; | |
126 | ||
127 | driver = qemu_opt_get(opts, "driver"); | |
128 | if (driver && !strcmp(driver, "?")) { | |
129 | bool show_no_user = false; | |
130 | object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, &show_no_user); | |
131 | return 1; | |
132 | } | |
133 | ||
134 | if (!driver || !qemu_opt_get(opts, "?")) { | |
135 | return 0; | |
136 | } | |
137 | ||
138 | klass = object_class_by_name(driver); | |
139 | if (!klass) { | |
140 | const char *typename = find_typename_by_alias(driver); | |
141 | ||
142 | if (typename) { | |
143 | driver = typename; | |
144 | klass = object_class_by_name(driver); | |
145 | } | |
146 | } | |
147 | ||
148 | if (!klass) { | |
149 | return 0; | |
150 | } | |
151 | info = DEVICE_CLASS(klass); | |
152 | ||
153 | for (prop = info->props; prop && prop->name; prop++) { | |
154 | /* | |
155 | * TODO Properties without a parser are just for dirty hacks. | |
156 | * qdev_prop_ptr is the only such PropertyInfo. It's marked | |
157 | * for removal. This conditional should be removed along with | |
158 | * it. | |
159 | */ | |
160 | if (!prop->info->parse) { | |
161 | continue; /* no way to set it, don't show */ | |
162 | } | |
163 | error_printf("%s.%s=%s\n", driver, prop->name, | |
164 | prop->info->legacy_name ?: prop->info->name); | |
165 | } | |
d03d6b4e AL |
166 | if (info->bus_info) { |
167 | for (prop = info->bus_info->props; prop && prop->name; prop++) { | |
168 | if (!prop->info->parse) { | |
169 | continue; /* no way to set it, don't show */ | |
170 | } | |
171 | error_printf("%s.%s=%s\n", driver, prop->name, | |
172 | prop->info->legacy_name ?: prop->info->name); | |
ee46d8a5 | 173 | } |
ee46d8a5 AL |
174 | } |
175 | return 1; | |
176 | } | |
177 | ||
57c9fafe | 178 | static Object *qdev_get_peripheral(void) |
ee46d8a5 | 179 | { |
8b45d447 | 180 | static Object *dev; |
ee46d8a5 AL |
181 | |
182 | if (dev == NULL) { | |
8b45d447 | 183 | dev = object_new("container"); |
57c9fafe AL |
184 | object_property_add_child(object_get_root(), "peripheral", |
185 | OBJECT(dev), NULL); | |
ee46d8a5 AL |
186 | } |
187 | ||
8b45d447 | 188 | return dev; |
ee46d8a5 AL |
189 | } |
190 | ||
57c9fafe | 191 | static Object *qdev_get_peripheral_anon(void) |
ee46d8a5 | 192 | { |
8b45d447 | 193 | static Object *dev; |
ee46d8a5 AL |
194 | |
195 | if (dev == NULL) { | |
8b45d447 | 196 | dev = object_new("container"); |
57c9fafe AL |
197 | object_property_add_child(object_get_root(), "peripheral-anon", |
198 | OBJECT(dev), NULL); | |
ee46d8a5 AL |
199 | } |
200 | ||
8b45d447 | 201 | return dev; |
ee46d8a5 AL |
202 | } |
203 | ||
204 | static void qbus_list_bus(DeviceState *dev) | |
205 | { | |
206 | BusState *child; | |
207 | const char *sep = " "; | |
208 | ||
209 | error_printf("child busses at \"%s\":", | |
210 | dev->id ? dev->id : object_get_typename(OBJECT(dev))); | |
211 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
212 | error_printf("%s\"%s\"", sep, child->name); | |
213 | sep = ", "; | |
214 | } | |
215 | error_printf("\n"); | |
216 | } | |
217 | ||
218 | static void qbus_list_dev(BusState *bus) | |
219 | { | |
220 | DeviceState *dev; | |
221 | const char *sep = " "; | |
222 | ||
223 | error_printf("devices at \"%s\":", bus->name); | |
224 | QTAILQ_FOREACH(dev, &bus->children, sibling) { | |
225 | error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev))); | |
226 | if (dev->id) | |
227 | error_printf("/\"%s\"", dev->id); | |
228 | sep = ", "; | |
229 | } | |
230 | error_printf("\n"); | |
231 | } | |
232 | ||
233 | static BusState *qbus_find_bus(DeviceState *dev, char *elem) | |
234 | { | |
235 | BusState *child; | |
236 | ||
237 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
238 | if (strcmp(child->name, elem) == 0) { | |
239 | return child; | |
240 | } | |
241 | } | |
242 | return NULL; | |
243 | } | |
244 | ||
245 | static DeviceState *qbus_find_dev(BusState *bus, char *elem) | |
246 | { | |
247 | DeviceState *dev; | |
248 | ||
249 | /* | |
250 | * try to match in order: | |
251 | * (1) instance id, if present | |
252 | * (2) driver name | |
253 | * (3) driver alias, if present | |
254 | */ | |
255 | QTAILQ_FOREACH(dev, &bus->children, sibling) { | |
256 | if (dev->id && strcmp(dev->id, elem) == 0) { | |
257 | return dev; | |
258 | } | |
259 | } | |
260 | QTAILQ_FOREACH(dev, &bus->children, sibling) { | |
261 | if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) { | |
262 | return dev; | |
263 | } | |
264 | } | |
265 | QTAILQ_FOREACH(dev, &bus->children, sibling) { | |
266 | DeviceClass *dc = DEVICE_GET_CLASS(dev); | |
267 | ||
268 | if (qdev_class_has_alias(dc) && | |
269 | strcmp(qdev_class_get_alias(dc), elem) == 0) { | |
270 | return dev; | |
271 | } | |
272 | } | |
273 | return NULL; | |
274 | } | |
275 | ||
276 | static BusState *qbus_find_recursive(BusState *bus, const char *name, | |
277 | const BusInfo *info) | |
278 | { | |
279 | DeviceState *dev; | |
280 | BusState *child, *ret; | |
281 | int match = 1; | |
282 | ||
283 | if (name && (strcmp(bus->name, name) != 0)) { | |
284 | match = 0; | |
285 | } | |
286 | if (info && (bus->info != info)) { | |
287 | match = 0; | |
288 | } | |
289 | if (match) { | |
290 | return bus; | |
291 | } | |
292 | ||
293 | QTAILQ_FOREACH(dev, &bus->children, sibling) { | |
294 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
295 | ret = qbus_find_recursive(child, name, info); | |
296 | if (ret) { | |
297 | return ret; | |
298 | } | |
299 | } | |
300 | } | |
301 | return NULL; | |
302 | } | |
303 | ||
304 | static BusState *qbus_find(const char *path) | |
305 | { | |
306 | DeviceState *dev; | |
307 | BusState *bus; | |
308 | char elem[128]; | |
309 | int pos, len; | |
310 | ||
311 | /* find start element */ | |
312 | if (path[0] == '/') { | |
313 | bus = sysbus_get_default(); | |
314 | pos = 0; | |
315 | } else { | |
316 | if (sscanf(path, "%127[^/]%n", elem, &len) != 1) { | |
317 | assert(!path[0]); | |
318 | elem[0] = len = 0; | |
319 | } | |
320 | bus = qbus_find_recursive(sysbus_get_default(), elem, NULL); | |
321 | if (!bus) { | |
322 | qerror_report(QERR_BUS_NOT_FOUND, elem); | |
323 | return NULL; | |
324 | } | |
325 | pos = len; | |
326 | } | |
327 | ||
328 | for (;;) { | |
329 | assert(path[pos] == '/' || !path[pos]); | |
330 | while (path[pos] == '/') { | |
331 | pos++; | |
332 | } | |
333 | if (path[pos] == '\0') { | |
334 | return bus; | |
335 | } | |
336 | ||
337 | /* find device */ | |
338 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { | |
339 | assert(0); | |
340 | elem[0] = len = 0; | |
341 | } | |
342 | pos += len; | |
343 | dev = qbus_find_dev(bus, elem); | |
344 | if (!dev) { | |
345 | qerror_report(QERR_DEVICE_NOT_FOUND, elem); | |
346 | if (!monitor_cur_is_qmp()) { | |
347 | qbus_list_dev(bus); | |
348 | } | |
349 | return NULL; | |
350 | } | |
351 | ||
352 | assert(path[pos] == '/' || !path[pos]); | |
353 | while (path[pos] == '/') { | |
354 | pos++; | |
355 | } | |
356 | if (path[pos] == '\0') { | |
357 | /* last specified element is a device. If it has exactly | |
358 | * one child bus accept it nevertheless */ | |
359 | switch (dev->num_child_bus) { | |
360 | case 0: | |
361 | qerror_report(QERR_DEVICE_NO_BUS, elem); | |
362 | return NULL; | |
363 | case 1: | |
364 | return QLIST_FIRST(&dev->child_bus); | |
365 | default: | |
366 | qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem); | |
367 | if (!monitor_cur_is_qmp()) { | |
368 | qbus_list_bus(dev); | |
369 | } | |
370 | return NULL; | |
371 | } | |
372 | } | |
373 | ||
374 | /* find bus */ | |
375 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { | |
376 | assert(0); | |
377 | elem[0] = len = 0; | |
378 | } | |
379 | pos += len; | |
380 | bus = qbus_find_bus(dev, elem); | |
381 | if (!bus) { | |
382 | qerror_report(QERR_BUS_NOT_FOUND, elem); | |
383 | if (!monitor_cur_is_qmp()) { | |
384 | qbus_list_bus(dev); | |
385 | } | |
386 | return NULL; | |
387 | } | |
388 | } | |
389 | } | |
390 | ||
391 | DeviceState *qdev_device_add(QemuOpts *opts) | |
392 | { | |
393 | ObjectClass *obj; | |
394 | DeviceClass *k; | |
395 | const char *driver, *path, *id; | |
396 | DeviceState *qdev; | |
397 | BusState *bus; | |
398 | ||
399 | driver = qemu_opt_get(opts, "driver"); | |
400 | if (!driver) { | |
401 | qerror_report(QERR_MISSING_PARAMETER, "driver"); | |
402 | return NULL; | |
403 | } | |
404 | ||
405 | /* find driver */ | |
406 | obj = object_class_by_name(driver); | |
407 | if (!obj) { | |
408 | const char *typename = find_typename_by_alias(driver); | |
409 | ||
410 | if (typename) { | |
411 | driver = typename; | |
412 | obj = object_class_by_name(driver); | |
413 | } | |
414 | } | |
415 | ||
416 | if (!obj) { | |
417 | qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type"); | |
418 | return NULL; | |
419 | } | |
420 | ||
421 | k = DEVICE_CLASS(obj); | |
422 | ||
423 | /* find bus */ | |
424 | path = qemu_opt_get(opts, "bus"); | |
425 | if (path != NULL) { | |
426 | bus = qbus_find(path); | |
427 | if (!bus) { | |
428 | return NULL; | |
429 | } | |
430 | if (bus->info != k->bus_info) { | |
431 | qerror_report(QERR_BAD_BUS_FOR_DEVICE, | |
432 | driver, bus->info->name); | |
433 | return NULL; | |
434 | } | |
435 | } else { | |
436 | bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_info); | |
437 | if (!bus) { | |
438 | qerror_report(QERR_NO_BUS_FOR_DEVICE, | |
439 | driver, k->bus_info->name); | |
440 | return NULL; | |
441 | } | |
442 | } | |
443 | if (qdev_hotplug && !bus->allow_hotplug) { | |
444 | qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); | |
445 | return NULL; | |
446 | } | |
447 | ||
448 | if (!bus) { | |
449 | bus = sysbus_get_default(); | |
450 | } | |
451 | ||
452 | /* create device, set properties */ | |
453 | qdev = DEVICE(object_new(driver)); | |
454 | qdev_set_parent_bus(qdev, bus); | |
455 | qdev_prop_set_globals(qdev); | |
456 | ||
457 | id = qemu_opts_id(opts); | |
458 | if (id) { | |
459 | qdev->id = id; | |
b2d4b3f7 AL |
460 | } |
461 | if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) { | |
462 | qdev_free(qdev); | |
463 | return NULL; | |
464 | } | |
465 | if (qdev_init(qdev) < 0) { | |
466 | qerror_report(QERR_DEVICE_INIT_FAILED, driver); | |
467 | return NULL; | |
468 | } | |
469 | if (qdev->id) { | |
57c9fafe AL |
470 | object_property_add_child(qdev_get_peripheral(), qdev->id, |
471 | OBJECT(qdev), NULL); | |
ee46d8a5 AL |
472 | } else { |
473 | static int anon_count; | |
474 | gchar *name = g_strdup_printf("device[%d]", anon_count++); | |
57c9fafe AL |
475 | object_property_add_child(qdev_get_peripheral_anon(), name, |
476 | OBJECT(qdev), NULL); | |
ee46d8a5 AL |
477 | g_free(name); |
478 | } | |
ee46d8a5 AL |
479 | qdev->opts = opts; |
480 | return qdev; | |
481 | } | |
482 | ||
483 | ||
484 | #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) | |
485 | static void qbus_print(Monitor *mon, BusState *bus, int indent); | |
486 | ||
487 | static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, | |
488 | const char *prefix, int indent) | |
489 | { | |
ee46d8a5 AL |
490 | if (!props) |
491 | return; | |
d822979b PB |
492 | for (; props->name; props++) { |
493 | Error *err = NULL; | |
494 | char *value; | |
495 | char *legacy_name = g_strdup_printf("legacy-%s", props->name); | |
496 | if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) { | |
497 | value = object_property_get_str(OBJECT(dev), legacy_name, &err); | |
498 | } else { | |
499 | value = object_property_get_str(OBJECT(dev), props->name, &err); | |
500 | } | |
501 | g_free(legacy_name); | |
502 | ||
503 | if (err) { | |
504 | error_free(err); | |
505 | continue; | |
ee46d8a5 | 506 | } |
d822979b PB |
507 | qdev_printf("%s-prop: %s = %s\n", prefix, props->name, |
508 | value && *value ? value : "<null>"); | |
509 | g_free(value); | |
ee46d8a5 AL |
510 | } |
511 | } | |
512 | ||
513 | static void qdev_print(Monitor *mon, DeviceState *dev, int indent) | |
514 | { | |
515 | BusState *child; | |
516 | qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)), | |
517 | dev->id ? dev->id : ""); | |
518 | indent += 2; | |
519 | if (dev->num_gpio_in) { | |
520 | qdev_printf("gpio-in %d\n", dev->num_gpio_in); | |
521 | } | |
522 | if (dev->num_gpio_out) { | |
523 | qdev_printf("gpio-out %d\n", dev->num_gpio_out); | |
524 | } | |
525 | qdev_print_props(mon, dev, qdev_get_props(dev), "dev", indent); | |
526 | qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent); | |
527 | if (dev->parent_bus->info->print_dev) | |
528 | dev->parent_bus->info->print_dev(mon, dev, indent); | |
529 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
530 | qbus_print(mon, child, indent); | |
531 | } | |
532 | } | |
533 | ||
534 | static void qbus_print(Monitor *mon, BusState *bus, int indent) | |
535 | { | |
536 | struct DeviceState *dev; | |
537 | ||
538 | qdev_printf("bus: %s\n", bus->name); | |
539 | indent += 2; | |
540 | qdev_printf("type %s\n", bus->info->name); | |
541 | QTAILQ_FOREACH(dev, &bus->children, sibling) { | |
542 | qdev_print(mon, dev, indent); | |
543 | } | |
544 | } | |
545 | #undef qdev_printf | |
546 | ||
547 | void do_info_qtree(Monitor *mon) | |
548 | { | |
549 | if (sysbus_get_default()) | |
550 | qbus_print(mon, sysbus_get_default(), 0); | |
551 | } | |
552 | ||
553 | void do_info_qdm(Monitor *mon) | |
554 | { | |
555 | object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, NULL); | |
556 | } | |
557 | ||
558 | int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
559 | { | |
560 | QemuOpts *opts; | |
561 | ||
562 | opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict); | |
563 | if (!opts) { | |
564 | return -1; | |
565 | } | |
566 | if (!monitor_cur_is_qmp() && qdev_device_help(opts)) { | |
567 | qemu_opts_del(opts); | |
568 | return 0; | |
569 | } | |
570 | if (!qdev_device_add(opts)) { | |
571 | qemu_opts_del(opts); | |
572 | return -1; | |
573 | } | |
574 | return 0; | |
575 | } | |
576 | ||
577 | int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
578 | { | |
579 | const char *id = qdict_get_str(qdict, "id"); | |
580 | DeviceState *dev; | |
581 | ||
582 | dev = qdev_find_recursive(sysbus_get_default(), id); | |
583 | if (NULL == dev) { | |
584 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
585 | return -1; | |
586 | } | |
587 | return qdev_unplug(dev); | |
588 | } | |
589 | ||
590 | void qdev_machine_init(void) | |
591 | { | |
592 | qdev_get_peripheral_anon(); | |
593 | qdev_get_peripheral(); | |
594 | } |