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