Merge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2020-02-15-v2' into...
[qemu.git] / qdev-monitor.c
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 "qemu/osdep.h"
21 #include "hw/sysbus.h"
22 #include "monitor/hmp.h"
23 #include "monitor/monitor.h"
24 #include "monitor/qdev.h"
25 #include "sysemu/arch_init.h"
26 #include "qapi/error.h"
27 #include "qapi/qapi-commands-qdev.h"
28 #include "qapi/qmp/qdict.h"
29 #include "qapi/qmp/qerror.h"
30 #include "qemu/config-file.h"
31 #include "qemu/error-report.h"
32 #include "qemu/help_option.h"
33 #include "qemu/option.h"
34 #include "qemu/qemu-print.h"
35 #include "qemu/option_int.h"
36 #include "sysemu/block-backend.h"
37 #include "sysemu/sysemu.h"
38 #include "migration/misc.h"
39 #include "migration/migration.h"
40
41 /*
42 * Aliases were a bad idea from the start. Let's keep them
43 * from spreading further.
44 */
45 typedef struct QDevAlias
46 {
47 const char *typename;
48 const char *alias;
49 uint32_t arch_mask;
50 } QDevAlias;
51
52 /* Please keep this table sorted by typename. */
53 static const QDevAlias qdev_alias_table[] = {
54 { "e1000", "e1000-82540em" },
55 { "ich9-ahci", "ahci" },
56 { "lsi53c895a", "lsi" },
57 { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_S390X },
58 { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
59 { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X },
60 { "virtio-balloon-pci", "virtio-balloon",
61 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
62 { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X },
63 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
64 { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_S390X },
65 { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
66 { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X },
67 { "virtio-input-host-pci", "virtio-input-host",
68 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
69 { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X },
70 { "virtio-keyboard-pci", "virtio-keyboard",
71 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
72 { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_S390X },
73 { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
74 { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X },
75 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
76 { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_S390X },
77 { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
78 { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X },
79 { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
80 { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X },
81 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
82 { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_S390X },
83 { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
84 { }
85 };
86
87 static const char *qdev_class_get_alias(DeviceClass *dc)
88 {
89 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
90 int i;
91
92 for (i = 0; qdev_alias_table[i].typename; i++) {
93 if (qdev_alias_table[i].arch_mask &&
94 !(qdev_alias_table[i].arch_mask & arch_type)) {
95 continue;
96 }
97
98 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
99 return qdev_alias_table[i].alias;
100 }
101 }
102
103 return NULL;
104 }
105
106 static bool qdev_class_has_alias(DeviceClass *dc)
107 {
108 return (qdev_class_get_alias(dc) != NULL);
109 }
110
111 static void qdev_print_devinfo(DeviceClass *dc)
112 {
113 qemu_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
114 if (dc->bus_type) {
115 qemu_printf(", bus %s", dc->bus_type);
116 }
117 if (qdev_class_has_alias(dc)) {
118 qemu_printf(", alias \"%s\"", qdev_class_get_alias(dc));
119 }
120 if (dc->desc) {
121 qemu_printf(", desc \"%s\"", dc->desc);
122 }
123 if (!dc->user_creatable) {
124 qemu_printf(", no-user");
125 }
126 qemu_printf("\n");
127 }
128
129 static void qdev_print_devinfos(bool show_no_user)
130 {
131 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
132 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
133 [DEVICE_CATEGORY_USB] = "USB",
134 [DEVICE_CATEGORY_STORAGE] = "Storage",
135 [DEVICE_CATEGORY_NETWORK] = "Network",
136 [DEVICE_CATEGORY_INPUT] = "Input",
137 [DEVICE_CATEGORY_DISPLAY] = "Display",
138 [DEVICE_CATEGORY_SOUND] = "Sound",
139 [DEVICE_CATEGORY_MISC] = "Misc",
140 [DEVICE_CATEGORY_CPU] = "CPU",
141 [DEVICE_CATEGORY_MAX] = "Uncategorized",
142 };
143 GSList *list, *elt;
144 int i;
145 bool cat_printed;
146
147 list = object_class_get_list_sorted(TYPE_DEVICE, false);
148
149 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
150 cat_printed = false;
151 for (elt = list; elt; elt = elt->next) {
152 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
153 TYPE_DEVICE);
154 if ((i < DEVICE_CATEGORY_MAX
155 ? !test_bit(i, dc->categories)
156 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
157 || (!show_no_user
158 && !dc->user_creatable)) {
159 continue;
160 }
161 if (!cat_printed) {
162 qemu_printf("%s%s devices:\n", i ? "\n" : "", cat_name[i]);
163 cat_printed = true;
164 }
165 qdev_print_devinfo(dc);
166 }
167 }
168
169 g_slist_free(list);
170 }
171
172 static int set_property(void *opaque, const char *name, const char *value,
173 Error **errp)
174 {
175 Object *obj = opaque;
176 Error *err = NULL;
177
178 if (strcmp(name, "driver") == 0)
179 return 0;
180 if (strcmp(name, "bus") == 0)
181 return 0;
182
183 object_property_parse(obj, value, name, &err);
184 if (err != NULL) {
185 error_propagate(errp, err);
186 return -1;
187 }
188 return 0;
189 }
190
191 static const char *find_typename_by_alias(const char *alias)
192 {
193 int i;
194
195 for (i = 0; qdev_alias_table[i].alias; i++) {
196 if (qdev_alias_table[i].arch_mask &&
197 !(qdev_alias_table[i].arch_mask & arch_type)) {
198 continue;
199 }
200
201 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
202 return qdev_alias_table[i].typename;
203 }
204 }
205
206 return NULL;
207 }
208
209 static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
210 {
211 ObjectClass *oc;
212 DeviceClass *dc;
213 const char *original_name = *driver;
214
215 oc = object_class_by_name(*driver);
216 if (!oc) {
217 const char *typename = find_typename_by_alias(*driver);
218
219 if (typename) {
220 *driver = typename;
221 oc = object_class_by_name(*driver);
222 }
223 }
224
225 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
226 if (*driver != original_name) {
227 error_setg(errp, "'%s' (alias '%s') is not a valid device model"
228 " name", original_name, *driver);
229 } else {
230 error_setg(errp, "'%s' is not a valid device model name", *driver);
231 }
232 return NULL;
233 }
234
235 if (object_class_is_abstract(oc)) {
236 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
237 "non-abstract device type");
238 return NULL;
239 }
240
241 dc = DEVICE_CLASS(oc);
242 if (!dc->user_creatable ||
243 (qdev_hotplug && !dc->hotpluggable)) {
244 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
245 "pluggable device type");
246 return NULL;
247 }
248
249 return dc;
250 }
251
252
253 int qdev_device_help(QemuOpts *opts)
254 {
255 Error *local_err = NULL;
256 const char *driver;
257 ObjectPropertyInfoList *prop_list;
258 ObjectPropertyInfoList *prop;
259
260 driver = qemu_opt_get(opts, "driver");
261 if (driver && is_help_option(driver)) {
262 qdev_print_devinfos(false);
263 return 1;
264 }
265
266 if (!driver || !qemu_opt_has_help_opt(opts)) {
267 return 0;
268 }
269
270 if (!object_class_by_name(driver)) {
271 const char *typename = find_typename_by_alias(driver);
272
273 if (typename) {
274 driver = typename;
275 }
276 }
277
278 prop_list = qmp_device_list_properties(driver, &local_err);
279 if (local_err) {
280 goto error;
281 }
282
283 if (prop_list) {
284 qemu_printf("%s options:\n", driver);
285 } else {
286 qemu_printf("There are no options for %s.\n", driver);
287 }
288 for (prop = prop_list; prop; prop = prop->next) {
289 int len;
290 qemu_printf(" %s=<%s>%n", prop->value->name, prop->value->type, &len);
291 if (prop->value->has_description) {
292 if (len < 24) {
293 qemu_printf("%*s", 24 - len, "");
294 }
295 qemu_printf(" - %s\n", prop->value->description);
296 } else {
297 qemu_printf("\n");
298 }
299 }
300
301 qapi_free_ObjectPropertyInfoList(prop_list);
302 return 1;
303
304 error:
305 error_report_err(local_err);
306 return 1;
307 }
308
309 static Object *qdev_get_peripheral(void)
310 {
311 static Object *dev;
312
313 if (dev == NULL) {
314 dev = container_get(qdev_get_machine(), "/peripheral");
315 }
316
317 return dev;
318 }
319
320 static Object *qdev_get_peripheral_anon(void)
321 {
322 static Object *dev;
323
324 if (dev == NULL) {
325 dev = container_get(qdev_get_machine(), "/peripheral-anon");
326 }
327
328 return dev;
329 }
330
331 static void qbus_error_append_bus_list_hint(DeviceState *dev,
332 Error *const *errp)
333 {
334 BusState *child;
335 const char *sep = " ";
336
337 error_append_hint(errp, "child buses at \"%s\":",
338 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
339 QLIST_FOREACH(child, &dev->child_bus, sibling) {
340 error_append_hint(errp, "%s\"%s\"", sep, child->name);
341 sep = ", ";
342 }
343 error_append_hint(errp, "\n");
344 }
345
346 static void qbus_error_append_dev_list_hint(BusState *bus,
347 Error *const *errp)
348 {
349 BusChild *kid;
350 const char *sep = " ";
351
352 error_append_hint(errp, "devices at \"%s\":", bus->name);
353 QTAILQ_FOREACH(kid, &bus->children, sibling) {
354 DeviceState *dev = kid->child;
355 error_append_hint(errp, "%s\"%s\"", sep,
356 object_get_typename(OBJECT(dev)));
357 if (dev->id) {
358 error_append_hint(errp, "/\"%s\"", dev->id);
359 }
360 sep = ", ";
361 }
362 error_append_hint(errp, "\n");
363 }
364
365 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
366 {
367 BusState *child;
368
369 QLIST_FOREACH(child, &dev->child_bus, sibling) {
370 if (strcmp(child->name, elem) == 0) {
371 return child;
372 }
373 }
374 return NULL;
375 }
376
377 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
378 {
379 BusChild *kid;
380
381 /*
382 * try to match in order:
383 * (1) instance id, if present
384 * (2) driver name
385 * (3) driver alias, if present
386 */
387 QTAILQ_FOREACH(kid, &bus->children, sibling) {
388 DeviceState *dev = kid->child;
389 if (dev->id && strcmp(dev->id, elem) == 0) {
390 return dev;
391 }
392 }
393 QTAILQ_FOREACH(kid, &bus->children, sibling) {
394 DeviceState *dev = kid->child;
395 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
396 return dev;
397 }
398 }
399 QTAILQ_FOREACH(kid, &bus->children, sibling) {
400 DeviceState *dev = kid->child;
401 DeviceClass *dc = DEVICE_GET_CLASS(dev);
402
403 if (qdev_class_has_alias(dc) &&
404 strcmp(qdev_class_get_alias(dc), elem) == 0) {
405 return dev;
406 }
407 }
408 return NULL;
409 }
410
411 static inline bool qbus_is_full(BusState *bus)
412 {
413 BusClass *bus_class = BUS_GET_CLASS(bus);
414 return bus_class->max_dev && bus->num_children >= bus_class->max_dev;
415 }
416
417 /*
418 * Search the tree rooted at @bus for a bus.
419 * If @name, search for a bus with that name. Note that bus names
420 * need not be unique. Yes, that's screwed up.
421 * Else search for a bus that is a subtype of @bus_typename.
422 * If more than one exists, prefer one that can take another device.
423 * Return the bus if found, else %NULL.
424 */
425 static BusState *qbus_find_recursive(BusState *bus, const char *name,
426 const char *bus_typename)
427 {
428 BusChild *kid;
429 BusState *pick, *child, *ret;
430 bool match;
431
432 assert(name || bus_typename);
433 if (name) {
434 match = !strcmp(bus->name, name);
435 } else {
436 match = !!object_dynamic_cast(OBJECT(bus), bus_typename);
437 }
438
439 if (match && !qbus_is_full(bus)) {
440 return bus; /* root matches and isn't full */
441 }
442
443 pick = match ? bus : NULL;
444
445 QTAILQ_FOREACH(kid, &bus->children, sibling) {
446 DeviceState *dev = kid->child;
447 QLIST_FOREACH(child, &dev->child_bus, sibling) {
448 ret = qbus_find_recursive(child, name, bus_typename);
449 if (ret && !qbus_is_full(ret)) {
450 return ret; /* a descendant matches and isn't full */
451 }
452 if (ret && !pick) {
453 pick = ret;
454 }
455 }
456 }
457
458 /* root or a descendant matches, but is full */
459 return pick;
460 }
461
462 static BusState *qbus_find(const char *path, Error **errp)
463 {
464 DeviceState *dev;
465 BusState *bus;
466 char elem[128];
467 int pos, len;
468
469 /* find start element */
470 if (path[0] == '/') {
471 bus = sysbus_get_default();
472 pos = 0;
473 } else {
474 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
475 assert(!path[0]);
476 elem[0] = len = 0;
477 }
478 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
479 if (!bus) {
480 error_setg(errp, "Bus '%s' not found", elem);
481 return NULL;
482 }
483 pos = len;
484 }
485
486 for (;;) {
487 assert(path[pos] == '/' || !path[pos]);
488 while (path[pos] == '/') {
489 pos++;
490 }
491 if (path[pos] == '\0') {
492 break;
493 }
494
495 /* find device */
496 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
497 g_assert_not_reached();
498 elem[0] = len = 0;
499 }
500 pos += len;
501 dev = qbus_find_dev(bus, elem);
502 if (!dev) {
503 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
504 "Device '%s' not found", elem);
505 qbus_error_append_dev_list_hint(bus, errp);
506 return NULL;
507 }
508
509 assert(path[pos] == '/' || !path[pos]);
510 while (path[pos] == '/') {
511 pos++;
512 }
513 if (path[pos] == '\0') {
514 /* last specified element is a device. If it has exactly
515 * one child bus accept it nevertheless */
516 if (dev->num_child_bus == 1) {
517 bus = QLIST_FIRST(&dev->child_bus);
518 break;
519 }
520 if (dev->num_child_bus) {
521 error_setg(errp, "Device '%s' has multiple child buses",
522 elem);
523 qbus_error_append_bus_list_hint(dev, errp);
524 } else {
525 error_setg(errp, "Device '%s' has no child bus", elem);
526 }
527 return NULL;
528 }
529
530 /* find bus */
531 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
532 g_assert_not_reached();
533 elem[0] = len = 0;
534 }
535 pos += len;
536 bus = qbus_find_bus(dev, elem);
537 if (!bus) {
538 error_setg(errp, "Bus '%s' not found", elem);
539 qbus_error_append_bus_list_hint(dev, errp);
540 return NULL;
541 }
542 }
543
544 if (qbus_is_full(bus)) {
545 error_setg(errp, "Bus '%s' is full", path);
546 return NULL;
547 }
548 return bus;
549 }
550
551 void qdev_set_id(DeviceState *dev, const char *id)
552 {
553 if (id) {
554 dev->id = id;
555 }
556
557 if (dev->id) {
558 object_property_add_child(qdev_get_peripheral(), dev->id,
559 OBJECT(dev), NULL);
560 } else {
561 static int anon_count;
562 gchar *name = g_strdup_printf("device[%d]", anon_count++);
563 object_property_add_child(qdev_get_peripheral_anon(), name,
564 OBJECT(dev), NULL);
565 g_free(name);
566 }
567 }
568
569 static int is_failover_device(void *opaque, const char *name, const char *value,
570 Error **errp)
571 {
572 if (strcmp(name, "failover_pair_id") == 0) {
573 QemuOpts *opts = (QemuOpts *)opaque;
574
575 if (qdev_should_hide_device(opts)) {
576 return 1;
577 }
578 }
579
580 return 0;
581 }
582
583 static bool should_hide_device(QemuOpts *opts)
584 {
585 if (qemu_opt_foreach(opts, is_failover_device, opts, NULL) == 0) {
586 return false;
587 }
588 return true;
589 }
590
591 DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
592 {
593 DeviceClass *dc;
594 const char *driver, *path;
595 DeviceState *dev = NULL;
596 BusState *bus = NULL;
597 Error *err = NULL;
598 bool hide;
599
600 driver = qemu_opt_get(opts, "driver");
601 if (!driver) {
602 error_setg(errp, QERR_MISSING_PARAMETER, "driver");
603 return NULL;
604 }
605
606 /* find driver */
607 dc = qdev_get_device_class(&driver, errp);
608 if (!dc) {
609 return NULL;
610 }
611
612 /* find bus */
613 path = qemu_opt_get(opts, "bus");
614 if (path != NULL) {
615 bus = qbus_find(path, errp);
616 if (!bus) {
617 return NULL;
618 }
619 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
620 error_setg(errp, "Device '%s' can't go on %s bus",
621 driver, object_get_typename(OBJECT(bus)));
622 return NULL;
623 }
624 } else if (dc->bus_type != NULL) {
625 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
626 if (!bus || qbus_is_full(bus)) {
627 error_setg(errp, "No '%s' bus found for device '%s'",
628 dc->bus_type, driver);
629 return NULL;
630 }
631 }
632 hide = should_hide_device(opts);
633
634 if ((hide || qdev_hotplug) && bus && !qbus_is_hotpluggable(bus)) {
635 error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
636 return NULL;
637 }
638
639 if (hide) {
640 return NULL;
641 }
642
643 if (!migration_is_idle()) {
644 error_setg(errp, "device_add not allowed while migrating");
645 return NULL;
646 }
647
648 /* create device */
649 dev = DEVICE(object_new(driver));
650
651 /* Check whether the hotplug is allowed by the machine */
652 if (qdev_hotplug && !qdev_hotplug_allowed(dev, &err)) {
653 /* Error must be set in the machine hook */
654 assert(err);
655 goto err_del_dev;
656 }
657
658 if (bus) {
659 qdev_set_parent_bus(dev, bus);
660 } else if (qdev_hotplug && !qdev_get_machine_hotplug_handler(dev)) {
661 /* No bus, no machine hotplug handler --> device is not hotpluggable */
662 error_setg(&err, "Device '%s' can not be hotplugged on this machine",
663 driver);
664 goto err_del_dev;
665 }
666
667 qdev_set_id(dev, qemu_opts_id(opts));
668
669 /* set properties */
670 if (qemu_opt_foreach(opts, set_property, dev, &err)) {
671 goto err_del_dev;
672 }
673
674 dev->opts = opts;
675 object_property_set_bool(OBJECT(dev), true, "realized", &err);
676 if (err != NULL) {
677 dev->opts = NULL;
678 goto err_del_dev;
679 }
680 return dev;
681
682 err_del_dev:
683 error_propagate(errp, err);
684 if (dev) {
685 object_unparent(OBJECT(dev));
686 object_unref(OBJECT(dev));
687 }
688 return NULL;
689 }
690
691
692 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
693 static void qbus_print(Monitor *mon, BusState *bus, int indent);
694
695 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
696 int indent)
697 {
698 if (!props)
699 return;
700 for (; props->name; props++) {
701 Error *err = NULL;
702 char *value;
703 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
704 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
705 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
706 } else {
707 value = object_property_print(OBJECT(dev), props->name, true, &err);
708 }
709 g_free(legacy_name);
710
711 if (err) {
712 error_free(err);
713 continue;
714 }
715 qdev_printf("%s = %s\n", props->name,
716 value && *value ? value : "<null>");
717 g_free(value);
718 }
719 }
720
721 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
722 {
723 BusClass *bc = BUS_GET_CLASS(bus);
724
725 if (bc->print_dev) {
726 bc->print_dev(mon, dev, indent);
727 }
728 }
729
730 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
731 {
732 ObjectClass *class;
733 BusState *child;
734 NamedGPIOList *ngl;
735
736 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
737 dev->id ? dev->id : "");
738 indent += 2;
739 QLIST_FOREACH(ngl, &dev->gpios, node) {
740 if (ngl->num_in) {
741 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
742 ngl->num_in);
743 }
744 if (ngl->num_out) {
745 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
746 ngl->num_out);
747 }
748 }
749 class = object_get_class(OBJECT(dev));
750 do {
751 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
752 class = object_class_get_parent(class);
753 } while (class != object_class_by_name(TYPE_DEVICE));
754 bus_print_dev(dev->parent_bus, mon, dev, indent);
755 QLIST_FOREACH(child, &dev->child_bus, sibling) {
756 qbus_print(mon, child, indent);
757 }
758 }
759
760 static void qbus_print(Monitor *mon, BusState *bus, int indent)
761 {
762 BusChild *kid;
763
764 qdev_printf("bus: %s\n", bus->name);
765 indent += 2;
766 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
767 QTAILQ_FOREACH(kid, &bus->children, sibling) {
768 DeviceState *dev = kid->child;
769 qdev_print(mon, dev, indent);
770 }
771 }
772 #undef qdev_printf
773
774 void hmp_info_qtree(Monitor *mon, const QDict *qdict)
775 {
776 if (sysbus_get_default())
777 qbus_print(mon, sysbus_get_default(), 0);
778 }
779
780 void hmp_info_qdm(Monitor *mon, const QDict *qdict)
781 {
782 qdev_print_devinfos(true);
783 }
784
785 void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
786 {
787 Error *local_err = NULL;
788 QemuOpts *opts;
789 DeviceState *dev;
790
791 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
792 if (local_err) {
793 error_propagate(errp, local_err);
794 return;
795 }
796 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
797 qemu_opts_del(opts);
798 return;
799 }
800 dev = qdev_device_add(opts, &local_err);
801 if (!dev) {
802 error_propagate(errp, local_err);
803 qemu_opts_del(opts);
804 return;
805 }
806 object_unref(OBJECT(dev));
807 }
808
809 static DeviceState *find_device_state(const char *id, Error **errp)
810 {
811 Object *obj;
812
813 if (id[0] == '/') {
814 obj = object_resolve_path(id, NULL);
815 } else {
816 char *root_path = object_get_canonical_path(qdev_get_peripheral());
817 char *path = g_strdup_printf("%s/%s", root_path, id);
818
819 g_free(root_path);
820 obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
821 g_free(path);
822 }
823
824 if (!obj) {
825 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
826 "Device '%s' not found", id);
827 return NULL;
828 }
829
830 if (!object_dynamic_cast(obj, TYPE_DEVICE)) {
831 error_setg(errp, "%s is not a hotpluggable device", id);
832 return NULL;
833 }
834
835 return DEVICE(obj);
836 }
837
838 void qdev_unplug(DeviceState *dev, Error **errp)
839 {
840 DeviceClass *dc = DEVICE_GET_CLASS(dev);
841 HotplugHandler *hotplug_ctrl;
842 HotplugHandlerClass *hdc;
843 Error *local_err = NULL;
844
845 if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) {
846 error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
847 return;
848 }
849
850 if (!dc->hotpluggable) {
851 error_setg(errp, QERR_DEVICE_NO_HOTPLUG,
852 object_get_typename(OBJECT(dev)));
853 return;
854 }
855
856 if (!migration_is_idle() && !dev->allow_unplug_during_migration) {
857 error_setg(errp, "device_del not allowed while migrating");
858 return;
859 }
860
861 qdev_hot_removed = true;
862
863 hotplug_ctrl = qdev_get_hotplug_handler(dev);
864 /* hotpluggable device MUST have HotplugHandler, if it doesn't
865 * then something is very wrong with it */
866 g_assert(hotplug_ctrl);
867
868 /* If device supports async unplug just request it to be done,
869 * otherwise just remove it synchronously */
870 hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl);
871 if (hdc->unplug_request) {
872 hotplug_handler_unplug_request(hotplug_ctrl, dev, &local_err);
873 } else {
874 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
875 if (!local_err) {
876 object_unparent(OBJECT(dev));
877 }
878 }
879 error_propagate(errp, local_err);
880 }
881
882 void qmp_device_del(const char *id, Error **errp)
883 {
884 DeviceState *dev = find_device_state(id, errp);
885 if (dev != NULL) {
886 qdev_unplug(dev, errp);
887 }
888 }
889
890 void hmp_device_add(Monitor *mon, const QDict *qdict)
891 {
892 Error *err = NULL;
893
894 qmp_device_add((QDict *)qdict, NULL, &err);
895 hmp_handle_error(mon, err);
896 }
897
898 void hmp_device_del(Monitor *mon, const QDict *qdict)
899 {
900 const char *id = qdict_get_str(qdict, "id");
901 Error *err = NULL;
902
903 qmp_device_del(id, &err);
904 hmp_handle_error(mon, err);
905 }
906
907 BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
908 {
909 DeviceState *dev;
910 BlockBackend *blk;
911
912 dev = find_device_state(id, errp);
913 if (dev == NULL) {
914 return NULL;
915 }
916
917 blk = blk_by_dev(dev);
918 if (!blk) {
919 error_setg(errp, "Device does not have a block device backend");
920 }
921 return blk;
922 }
923
924 void qdev_machine_init(void)
925 {
926 qdev_get_peripheral_anon();
927 qdev_get_peripheral();
928 }
929
930 QemuOptsList qemu_device_opts = {
931 .name = "device",
932 .implied_opt_name = "driver",
933 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
934 .desc = {
935 /*
936 * no elements => accept any
937 * sanity checking will happen later
938 * when setting device properties
939 */
940 { /* end of list */ }
941 },
942 };
943
944 QemuOptsList qemu_global_opts = {
945 .name = "global",
946 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
947 .desc = {
948 {
949 .name = "driver",
950 .type = QEMU_OPT_STRING,
951 },{
952 .name = "property",
953 .type = QEMU_OPT_STRING,
954 },{
955 .name = "value",
956 .type = QEMU_OPT_STRING,
957 },
958 { /* end of list */ }
959 },
960 };
961
962 int qemu_global_option(const char *str)
963 {
964 char driver[64], property[64];
965 QemuOpts *opts;
966 int rc, offset;
967
968 rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
969 if (rc == 2 && str[offset] == '=') {
970 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
971 qemu_opt_set(opts, "driver", driver, &error_abort);
972 qemu_opt_set(opts, "property", property, &error_abort);
973 qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
974 return 0;
975 }
976
977 opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false);
978 if (!opts) {
979 return -1;
980 }
981
982 return 0;
983 }