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