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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/dispatch.h"
29#include "qapi/qmp/qdict.h"
30#include "qapi/qmp/qerror.h"
31#include "qapi/qmp/qstring.h"
32#include "qapi/qobject-input-visitor.h"
33#include "qemu/config-file.h"
34#include "qemu/error-report.h"
35#include "qemu/help_option.h"
36#include "qemu/option.h"
37#include "qemu/qemu-print.h"
38#include "qemu/option_int.h"
39#include "sysemu/block-backend.h"
40#include "migration/misc.h"
41#include "migration/migration.h"
42#include "qemu/cutils.h"
43#include "hw/qdev-properties.h"
44#include "hw/clock.h"
45#include "hw/boards.h"
46
47
48
49
50
51typedef struct QDevAlias
52{
53 const char *typename;
54 const char *alias;
55 uint32_t arch_mask;
56} QDevAlias;
57
58
59#define QEMU_ARCH_VIRTIO_PCI (QEMU_ARCH_ALPHA | QEMU_ARCH_ARM | \
60 QEMU_ARCH_HPPA | QEMU_ARCH_I386 | \
61 QEMU_ARCH_MIPS | QEMU_ARCH_PPC | \
62 QEMU_ARCH_RISCV | QEMU_ARCH_SH4 | \
63 QEMU_ARCH_SPARC | QEMU_ARCH_XTENSA | \
64 QEMU_ARCH_LOONGARCH)
65#define QEMU_ARCH_VIRTIO_CCW (QEMU_ARCH_S390X)
66#define QEMU_ARCH_VIRTIO_MMIO (QEMU_ARCH_M68K)
67
68
69static const QDevAlias qdev_alias_table[] = {
70 { "AC97", "ac97" },
71 { "e1000", "e1000-82540em" },
72 { "ES1370", "es1370" },
73 { "ich9-ahci", "ahci" },
74 { "lsi53c895a", "lsi" },
75 { "virtio-9p-device", "virtio-9p", QEMU_ARCH_VIRTIO_MMIO },
76 { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_VIRTIO_CCW },
77 { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_VIRTIO_PCI },
78 { "virtio-balloon-device", "virtio-balloon", QEMU_ARCH_VIRTIO_MMIO },
79 { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_VIRTIO_CCW },
80 { "virtio-balloon-pci", "virtio-balloon", QEMU_ARCH_VIRTIO_PCI },
81 { "virtio-blk-device", "virtio-blk", QEMU_ARCH_VIRTIO_MMIO },
82 { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_VIRTIO_CCW },
83 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_VIRTIO_PCI },
84 { "virtio-gpu-device", "virtio-gpu", QEMU_ARCH_VIRTIO_MMIO },
85 { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_VIRTIO_CCW },
86 { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_VIRTIO_PCI },
87 { "virtio-gpu-gl-device", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_MMIO },
88 { "virtio-gpu-gl-pci", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_PCI },
89 { "virtio-input-host-device", "virtio-input-host", QEMU_ARCH_VIRTIO_MMIO },
90 { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_VIRTIO_CCW },
91 { "virtio-input-host-pci", "virtio-input-host", QEMU_ARCH_VIRTIO_PCI },
92 { "virtio-iommu-pci", "virtio-iommu", QEMU_ARCH_VIRTIO_PCI },
93 { "virtio-keyboard-device", "virtio-keyboard", QEMU_ARCH_VIRTIO_MMIO },
94 { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_VIRTIO_CCW },
95 { "virtio-keyboard-pci", "virtio-keyboard", QEMU_ARCH_VIRTIO_PCI },
96 { "virtio-mouse-device", "virtio-mouse", QEMU_ARCH_VIRTIO_MMIO },
97 { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_VIRTIO_CCW },
98 { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_VIRTIO_PCI },
99 { "virtio-net-device", "virtio-net", QEMU_ARCH_VIRTIO_MMIO },
100 { "virtio-net-ccw", "virtio-net", QEMU_ARCH_VIRTIO_CCW },
101 { "virtio-net-pci", "virtio-net", QEMU_ARCH_VIRTIO_PCI },
102 { "virtio-rng-device", "virtio-rng", QEMU_ARCH_VIRTIO_MMIO },
103 { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_VIRTIO_CCW },
104 { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_VIRTIO_PCI },
105 { "virtio-scsi-device", "virtio-scsi", QEMU_ARCH_VIRTIO_MMIO },
106 { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_VIRTIO_CCW },
107 { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_VIRTIO_PCI },
108 { "virtio-serial-device", "virtio-serial", QEMU_ARCH_VIRTIO_MMIO },
109 { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW },
110 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI},
111 { "virtio-tablet-device", "virtio-tablet", QEMU_ARCH_VIRTIO_MMIO },
112 { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW },
113 { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI },
114 { }
115};
116
117static const char *qdev_class_get_alias(DeviceClass *dc)
118{
119 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
120 int i;
121
122 for (i = 0; qdev_alias_table[i].typename; i++) {
123 if (qdev_alias_table[i].arch_mask &&
124 !(qdev_alias_table[i].arch_mask & arch_type)) {
125 continue;
126 }
127
128 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
129 return qdev_alias_table[i].alias;
130 }
131 }
132
133 return NULL;
134}
135
136static bool qdev_class_has_alias(DeviceClass *dc)
137{
138 return (qdev_class_get_alias(dc) != NULL);
139}
140
141static void qdev_print_devinfo(DeviceClass *dc)
142{
143 qemu_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
144 if (dc->bus_type) {
145 qemu_printf(", bus %s", dc->bus_type);
146 }
147 if (qdev_class_has_alias(dc)) {
148 qemu_printf(", alias \"%s\"", qdev_class_get_alias(dc));
149 }
150 if (dc->desc) {
151 qemu_printf(", desc \"%s\"", dc->desc);
152 }
153 if (!dc->user_creatable) {
154 qemu_printf(", no-user");
155 }
156 qemu_printf("\n");
157}
158
159static void qdev_print_devinfos(bool show_no_user)
160{
161 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
162 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
163 [DEVICE_CATEGORY_USB] = "USB",
164 [DEVICE_CATEGORY_STORAGE] = "Storage",
165 [DEVICE_CATEGORY_NETWORK] = "Network",
166 [DEVICE_CATEGORY_INPUT] = "Input",
167 [DEVICE_CATEGORY_DISPLAY] = "Display",
168 [DEVICE_CATEGORY_SOUND] = "Sound",
169 [DEVICE_CATEGORY_MISC] = "Misc",
170 [DEVICE_CATEGORY_CPU] = "CPU",
171 [DEVICE_CATEGORY_WATCHDOG]= "Watchdog",
172 [DEVICE_CATEGORY_MAX] = "Uncategorized",
173 };
174 GSList *list, *elt;
175 int i;
176 bool cat_printed;
177
178 module_load_qom_all();
179 list = object_class_get_list_sorted(TYPE_DEVICE, false);
180
181 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
182 cat_printed = false;
183 for (elt = list; elt; elt = elt->next) {
184 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
185 TYPE_DEVICE);
186 if ((i < DEVICE_CATEGORY_MAX
187 ? !test_bit(i, dc->categories)
188 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
189 || (!show_no_user
190 && !dc->user_creatable)) {
191 continue;
192 }
193 if (!cat_printed) {
194 qemu_printf("%s%s devices:\n", i ? "\n" : "", cat_name[i]);
195 cat_printed = true;
196 }
197 qdev_print_devinfo(dc);
198 }
199 }
200
201 g_slist_free(list);
202}
203
204static const char *find_typename_by_alias(const char *alias)
205{
206 int i;
207
208 for (i = 0; qdev_alias_table[i].alias; i++) {
209 if (qdev_alias_table[i].arch_mask &&
210 !(qdev_alias_table[i].arch_mask & arch_type)) {
211 continue;
212 }
213
214 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
215 return qdev_alias_table[i].typename;
216 }
217 }
218
219 return NULL;
220}
221
222static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
223{
224 ObjectClass *oc;
225 DeviceClass *dc;
226 const char *original_name = *driver;
227
228 oc = module_object_class_by_name(*driver);
229 if (!oc) {
230 const char *typename = find_typename_by_alias(*driver);
231
232 if (typename) {
233 *driver = typename;
234 oc = module_object_class_by_name(*driver);
235 }
236 }
237
238 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
239 if (*driver != original_name) {
240 error_setg(errp, "'%s' (alias '%s') is not a valid device model"
241 " name", original_name, *driver);
242 } else {
243 error_setg(errp, "'%s' is not a valid device model name", *driver);
244 }
245 return NULL;
246 }
247
248 if (object_class_is_abstract(oc)) {
249 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
250 "a non-abstract device type");
251 return NULL;
252 }
253
254 dc = DEVICE_CLASS(oc);
255 if (!dc->user_creatable ||
256 (phase_check(PHASE_MACHINE_READY) && !dc->hotpluggable)) {
257 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
258 "a pluggable device type");
259 return NULL;
260 }
261
262 if (object_class_dynamic_cast(oc, TYPE_SYS_BUS_DEVICE)) {
263
264 MachineClass *mc = MACHINE_CLASS(object_get_class(qdev_get_machine()));
265 if (!device_type_is_dynamic_sysbus(mc, *driver)) {
266 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
267 "a dynamic sysbus device type for the machine");
268 return NULL;
269 }
270 }
271
272 return dc;
273}
274
275
276int qdev_device_help(QemuOpts *opts)
277{
278 Error *local_err = NULL;
279 const char *driver;
280 ObjectPropertyInfoList *prop_list;
281 ObjectPropertyInfoList *prop;
282 GPtrArray *array;
283 int i;
284
285 driver = qemu_opt_get(opts, "driver");
286 if (driver && is_help_option(driver)) {
287 qdev_print_devinfos(false);
288 return 1;
289 }
290
291 if (!driver || !qemu_opt_has_help_opt(opts)) {
292 return 0;
293 }
294
295 if (!object_class_by_name(driver)) {
296 const char *typename = find_typename_by_alias(driver);
297
298 if (typename) {
299 driver = typename;
300 }
301 }
302
303 prop_list = qmp_device_list_properties(driver, &local_err);
304 if (local_err) {
305 goto error;
306 }
307
308 if (prop_list) {
309 qemu_printf("%s options:\n", driver);
310 } else {
311 qemu_printf("There are no options for %s.\n", driver);
312 }
313 array = g_ptr_array_new();
314 for (prop = prop_list; prop; prop = prop->next) {
315 g_ptr_array_add(array,
316 object_property_help(prop->value->name,
317 prop->value->type,
318 prop->value->default_value,
319 prop->value->description));
320 }
321 g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0);
322 for (i = 0; i < array->len; i++) {
323 qemu_printf("%s\n", (char *)array->pdata[i]);
324 }
325 g_ptr_array_set_free_func(array, g_free);
326 g_ptr_array_free(array, true);
327 qapi_free_ObjectPropertyInfoList(prop_list);
328 return 1;
329
330error:
331 error_report_err(local_err);
332 return 1;
333}
334
335static Object *qdev_get_peripheral(void)
336{
337 static Object *dev;
338
339 if (dev == NULL) {
340 dev = container_get(qdev_get_machine(), "/peripheral");
341 }
342
343 return dev;
344}
345
346static Object *qdev_get_peripheral_anon(void)
347{
348 static Object *dev;
349
350 if (dev == NULL) {
351 dev = container_get(qdev_get_machine(), "/peripheral-anon");
352 }
353
354 return dev;
355}
356
357static void qbus_error_append_bus_list_hint(DeviceState *dev,
358 Error *const *errp)
359{
360 BusState *child;
361 const char *sep = " ";
362
363 error_append_hint(errp, "child buses at \"%s\":",
364 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
365 QLIST_FOREACH(child, &dev->child_bus, sibling) {
366 error_append_hint(errp, "%s\"%s\"", sep, child->name);
367 sep = ", ";
368 }
369 error_append_hint(errp, "\n");
370}
371
372static void qbus_error_append_dev_list_hint(BusState *bus,
373 Error *const *errp)
374{
375 BusChild *kid;
376 const char *sep = " ";
377
378 error_append_hint(errp, "devices at \"%s\":", bus->name);
379 QTAILQ_FOREACH(kid, &bus->children, sibling) {
380 DeviceState *dev = kid->child;
381 error_append_hint(errp, "%s\"%s\"", sep,
382 object_get_typename(OBJECT(dev)));
383 if (dev->id) {
384 error_append_hint(errp, "/\"%s\"", dev->id);
385 }
386 sep = ", ";
387 }
388 error_append_hint(errp, "\n");
389}
390
391static BusState *qbus_find_bus(DeviceState *dev, char *elem)
392{
393 BusState *child;
394
395 QLIST_FOREACH(child, &dev->child_bus, sibling) {
396 if (strcmp(child->name, elem) == 0) {
397 return child;
398 }
399 }
400 return NULL;
401}
402
403static DeviceState *qbus_find_dev(BusState *bus, char *elem)
404{
405 BusChild *kid;
406
407
408
409
410
411
412
413 QTAILQ_FOREACH(kid, &bus->children, sibling) {
414 DeviceState *dev = kid->child;
415 if (dev->id && strcmp(dev->id, elem) == 0) {
416 return dev;
417 }
418 }
419 QTAILQ_FOREACH(kid, &bus->children, sibling) {
420 DeviceState *dev = kid->child;
421 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
422 return dev;
423 }
424 }
425 QTAILQ_FOREACH(kid, &bus->children, sibling) {
426 DeviceState *dev = kid->child;
427 DeviceClass *dc = DEVICE_GET_CLASS(dev);
428
429 if (qdev_class_has_alias(dc) &&
430 strcmp(qdev_class_get_alias(dc), elem) == 0) {
431 return dev;
432 }
433 }
434 return NULL;
435}
436
437static inline bool qbus_is_full(BusState *bus)
438{
439 BusClass *bus_class;
440
441 if (bus->full) {
442 return true;
443 }
444 bus_class = BUS_GET_CLASS(bus);
445 return bus_class->max_dev && bus->num_children >= bus_class->max_dev;
446}
447
448
449
450
451
452
453
454
455
456static BusState *qbus_find_recursive(BusState *bus, const char *name,
457 const char *bus_typename)
458{
459 BusChild *kid;
460 BusState *pick, *child, *ret;
461 bool match;
462
463 assert(name || bus_typename);
464 if (name) {
465 match = !strcmp(bus->name, name);
466 } else {
467 match = !!object_dynamic_cast(OBJECT(bus), bus_typename);
468 }
469
470 if (match && !qbus_is_full(bus)) {
471 return bus;
472 }
473
474 pick = match ? bus : NULL;
475
476 QTAILQ_FOREACH(kid, &bus->children, sibling) {
477 DeviceState *dev = kid->child;
478 QLIST_FOREACH(child, &dev->child_bus, sibling) {
479 ret = qbus_find_recursive(child, name, bus_typename);
480 if (ret && !qbus_is_full(ret)) {
481 return ret;
482 }
483 if (ret && !pick) {
484 pick = ret;
485 }
486 }
487 }
488
489
490 return pick;
491}
492
493static BusState *qbus_find(const char *path, Error **errp)
494{
495 DeviceState *dev;
496 BusState *bus;
497 char elem[128];
498 int pos, len;
499
500
501 if (path[0] == '/') {
502 bus = sysbus_get_default();
503 pos = 0;
504 } else {
505 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
506 assert(!path[0]);
507 elem[0] = len = 0;
508 }
509 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
510 if (!bus) {
511 error_setg(errp, "Bus '%s' not found", elem);
512 return NULL;
513 }
514 pos = len;
515 }
516
517 for (;;) {
518 assert(path[pos] == '/' || !path[pos]);
519 while (path[pos] == '/') {
520 pos++;
521 }
522 if (path[pos] == '\0') {
523 break;
524 }
525
526
527 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
528 g_assert_not_reached();
529 elem[0] = len = 0;
530 }
531 pos += len;
532 dev = qbus_find_dev(bus, elem);
533 if (!dev) {
534 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
535 "Device '%s' not found", elem);
536 qbus_error_append_dev_list_hint(bus, errp);
537 return NULL;
538 }
539
540 assert(path[pos] == '/' || !path[pos]);
541 while (path[pos] == '/') {
542 pos++;
543 }
544 if (path[pos] == '\0') {
545
546
547 if (dev->num_child_bus == 1) {
548 bus = QLIST_FIRST(&dev->child_bus);
549 break;
550 }
551 if (dev->num_child_bus) {
552 error_setg(errp, "Device '%s' has multiple child buses",
553 elem);
554 qbus_error_append_bus_list_hint(dev, errp);
555 } else {
556 error_setg(errp, "Device '%s' has no child bus", elem);
557 }
558 return NULL;
559 }
560
561
562 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
563 g_assert_not_reached();
564 elem[0] = len = 0;
565 }
566 pos += len;
567 bus = qbus_find_bus(dev, elem);
568 if (!bus) {
569 error_setg(errp, "Bus '%s' not found", elem);
570 qbus_error_append_bus_list_hint(dev, errp);
571 return NULL;
572 }
573 }
574
575 if (qbus_is_full(bus)) {
576 error_setg(errp, "Bus '%s' is full", path);
577 return NULL;
578 }
579 return bus;
580}
581
582
583const char *qdev_set_id(DeviceState *dev, char *id, Error **errp)
584{
585 ObjectProperty *prop;
586
587 assert(!dev->id && !dev->realized);
588
589
590
591
592
593 if (id) {
594 prop = object_property_try_add_child(qdev_get_peripheral(), id,
595 OBJECT(dev), NULL);
596 if (prop) {
597 dev->id = id;
598 } else {
599 error_setg(errp, "Duplicate device ID '%s'", id);
600 g_free(id);
601 return NULL;
602 }
603 } else {
604 static int anon_count;
605 gchar *name = g_strdup_printf("device[%d]", anon_count++);
606 prop = object_property_add_child(qdev_get_peripheral_anon(), name,
607 OBJECT(dev));
608 g_free(name);
609 }
610
611 return prop->name;
612}
613
614DeviceState *qdev_device_add_from_qdict(const QDict *opts,
615 bool from_json, Error **errp)
616{
617 ERRP_GUARD();
618 DeviceClass *dc;
619 const char *driver, *path;
620 char *id;
621 DeviceState *dev = NULL;
622 BusState *bus = NULL;
623
624 driver = qdict_get_try_str(opts, "driver");
625 if (!driver) {
626 error_setg(errp, QERR_MISSING_PARAMETER, "driver");
627 return NULL;
628 }
629
630
631 dc = qdev_get_device_class(&driver, errp);
632 if (!dc) {
633 return NULL;
634 }
635
636
637 path = qdict_get_try_str(opts, "bus");
638 if (path != NULL) {
639 bus = qbus_find(path, errp);
640 if (!bus) {
641 return NULL;
642 }
643 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
644 error_setg(errp, "Device '%s' can't go on %s bus",
645 driver, object_get_typename(OBJECT(bus)));
646 return NULL;
647 }
648 } else if (dc->bus_type != NULL) {
649 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
650 if (!bus || qbus_is_full(bus)) {
651 error_setg(errp, "No '%s' bus found for device '%s'",
652 dc->bus_type, driver);
653 return NULL;
654 }
655 }
656
657 if (qdev_should_hide_device(opts, from_json, errp)) {
658 if (bus && !qbus_is_hotpluggable(bus)) {
659 error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
660 }
661 return NULL;
662 } else if (*errp) {
663 return NULL;
664 }
665
666 if (phase_check(PHASE_MACHINE_READY) && bus && !qbus_is_hotpluggable(bus)) {
667 error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
668 return NULL;
669 }
670
671 if (!migration_is_idle()) {
672 error_setg(errp, "device_add not allowed while migrating");
673 return NULL;
674 }
675
676
677 dev = qdev_new(driver);
678
679
680 if (phase_check(PHASE_MACHINE_READY)) {
681 if (!qdev_hotplug_allowed(dev, errp)) {
682 goto err_del_dev;
683 }
684
685 if (!bus && !qdev_get_machine_hotplug_handler(dev)) {
686
687 error_setg(errp, "Device '%s' can not be hotplugged on this machine",
688 driver);
689 goto err_del_dev;
690 }
691 }
692
693
694
695
696
697 id = g_strdup(qdict_get_try_str(opts, "id"));
698 if (!qdev_set_id(dev, id, errp)) {
699 goto err_del_dev;
700 }
701
702
703 dev->opts = qdict_clone_shallow(opts);
704 qdict_del(dev->opts, "driver");
705 qdict_del(dev->opts, "bus");
706 qdict_del(dev->opts, "id");
707
708 object_set_properties_from_keyval(&dev->parent_obj, dev->opts, from_json,
709 errp);
710 if (*errp) {
711 goto err_del_dev;
712 }
713
714 if (!qdev_realize(DEVICE(dev), bus, errp)) {
715 goto err_del_dev;
716 }
717 return dev;
718
719err_del_dev:
720 if (dev) {
721 object_unparent(OBJECT(dev));
722 object_unref(OBJECT(dev));
723 }
724 return NULL;
725}
726
727
728DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
729{
730 QDict *qdict = qemu_opts_to_qdict(opts, NULL);
731 DeviceState *ret;
732
733 ret = qdev_device_add_from_qdict(qdict, false, errp);
734 if (ret) {
735 qemu_opts_del(opts);
736 }
737 qobject_unref(qdict);
738 return ret;
739}
740
741#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
742static void qbus_print(Monitor *mon, BusState *bus, int indent);
743
744static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
745 int indent)
746{
747 if (!props)
748 return;
749 for (; props->name; props++) {
750 char *value;
751 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
752
753 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
754 value = object_property_get_str(OBJECT(dev), legacy_name, NULL);
755 } else {
756 value = object_property_print(OBJECT(dev), props->name, true,
757 NULL);
758 }
759 g_free(legacy_name);
760
761 if (!value) {
762 continue;
763 }
764 qdev_printf("%s = %s\n", props->name,
765 *value ? value : "<null>");
766 g_free(value);
767 }
768}
769
770static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
771{
772 BusClass *bc = BUS_GET_CLASS(bus);
773
774 if (bc->print_dev) {
775 bc->print_dev(mon, dev, indent);
776 }
777}
778
779static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
780{
781 ObjectClass *class;
782 BusState *child;
783 NamedGPIOList *ngl;
784 NamedClockList *ncl;
785
786 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
787 dev->id ? dev->id : "");
788 indent += 2;
789 QLIST_FOREACH(ngl, &dev->gpios, node) {
790 if (ngl->num_in) {
791 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
792 ngl->num_in);
793 }
794 if (ngl->num_out) {
795 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
796 ngl->num_out);
797 }
798 }
799 QLIST_FOREACH(ncl, &dev->clocks, node) {
800 g_autofree char *freq_str = clock_display_freq(ncl->clock);
801 qdev_printf("clock-%s%s \"%s\" freq_hz=%s\n",
802 ncl->output ? "out" : "in",
803 ncl->alias ? " (alias)" : "",
804 ncl->name, freq_str);
805 }
806 class = object_get_class(OBJECT(dev));
807 do {
808 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props_, indent);
809 class = object_class_get_parent(class);
810 } while (class != object_class_by_name(TYPE_DEVICE));
811 bus_print_dev(dev->parent_bus, mon, dev, indent);
812 QLIST_FOREACH(child, &dev->child_bus, sibling) {
813 qbus_print(mon, child, indent);
814 }
815}
816
817static void qbus_print(Monitor *mon, BusState *bus, int indent)
818{
819 BusChild *kid;
820
821 qdev_printf("bus: %s\n", bus->name);
822 indent += 2;
823 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
824 QTAILQ_FOREACH(kid, &bus->children, sibling) {
825 DeviceState *dev = kid->child;
826 qdev_print(mon, dev, indent);
827 }
828}
829#undef qdev_printf
830
831void hmp_info_qtree(Monitor *mon, const QDict *qdict)
832{
833 if (sysbus_get_default())
834 qbus_print(mon, sysbus_get_default(), 0);
835}
836
837void hmp_info_qdm(Monitor *mon, const QDict *qdict)
838{
839 qdev_print_devinfos(true);
840}
841
842void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
843{
844 QemuOpts *opts;
845 DeviceState *dev;
846
847 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, errp);
848 if (!opts) {
849 return;
850 }
851 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
852 qemu_opts_del(opts);
853 return;
854 }
855 dev = qdev_device_add(opts, errp);
856
857
858
859
860
861
862
863
864
865
866 drain_call_rcu();
867
868 if (!dev) {
869 qemu_opts_del(opts);
870 return;
871 }
872 object_unref(OBJECT(dev));
873}
874
875static DeviceState *find_device_state(const char *id, Error **errp)
876{
877 Object *obj = object_resolve_path_at(qdev_get_peripheral(), id);
878 DeviceState *dev;
879
880 if (!obj) {
881 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
882 "Device '%s' not found", id);
883 return NULL;
884 }
885
886 dev = (DeviceState *)object_dynamic_cast(obj, TYPE_DEVICE);
887 if (!dev) {
888 error_setg(errp, "%s is not a hotpluggable device", id);
889 return NULL;
890 }
891
892 return dev;
893}
894
895void qdev_unplug(DeviceState *dev, Error **errp)
896{
897 DeviceClass *dc = DEVICE_GET_CLASS(dev);
898 HotplugHandler *hotplug_ctrl;
899 HotplugHandlerClass *hdc;
900 Error *local_err = NULL;
901
902 if (qdev_unplug_blocked(dev, errp)) {
903 return;
904 }
905
906 if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) {
907 error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
908 return;
909 }
910
911 if (!dc->hotpluggable) {
912 error_setg(errp, QERR_DEVICE_NO_HOTPLUG,
913 object_get_typename(OBJECT(dev)));
914 return;
915 }
916
917 if (!migration_is_idle() && !dev->allow_unplug_during_migration) {
918 error_setg(errp, "device_del not allowed while migrating");
919 return;
920 }
921
922 qdev_hot_removed = true;
923
924 hotplug_ctrl = qdev_get_hotplug_handler(dev);
925
926
927 g_assert(hotplug_ctrl);
928
929
930
931 hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl);
932 if (hdc->unplug_request) {
933 hotplug_handler_unplug_request(hotplug_ctrl, dev, &local_err);
934 } else {
935 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
936 if (!local_err) {
937 object_unparent(OBJECT(dev));
938 }
939 }
940 error_propagate(errp, local_err);
941}
942
943void qmp_device_del(const char *id, Error **errp)
944{
945 DeviceState *dev = find_device_state(id, errp);
946 if (dev != NULL) {
947 if (dev->pending_deleted_event &&
948 (dev->pending_deleted_expires_ms == 0 ||
949 dev->pending_deleted_expires_ms > qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL))) {
950 error_setg(errp, "Device %s is already in the "
951 "process of unplug", id);
952 return;
953 }
954
955 qdev_unplug(dev, errp);
956 }
957}
958
959void hmp_device_add(Monitor *mon, const QDict *qdict)
960{
961 Error *err = NULL;
962
963 qmp_device_add((QDict *)qdict, NULL, &err);
964 hmp_handle_error(mon, err);
965}
966
967void hmp_device_del(Monitor *mon, const QDict *qdict)
968{
969 const char *id = qdict_get_str(qdict, "id");
970 Error *err = NULL;
971
972 qmp_device_del(id, &err);
973 hmp_handle_error(mon, err);
974}
975
976void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
977{
978 GSList *list, *elt;
979 size_t len;
980
981 if (nb_args != 2) {
982 return;
983 }
984
985 len = strlen(str);
986 readline_set_completion_index(rs, len);
987 list = elt = object_class_get_list(TYPE_DEVICE, false);
988 while (elt) {
989 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
990 TYPE_DEVICE);
991
992 if (dc->user_creatable) {
993 readline_add_completion_of(rs, str,
994 object_class_get_name(OBJECT_CLASS(dc)));
995 }
996 elt = elt->next;
997 }
998 g_slist_free(list);
999}
1000
1001static int qdev_add_hotpluggable_device(Object *obj, void *opaque)
1002{
1003 GSList **list = opaque;
1004 DeviceState *dev = (DeviceState *)object_dynamic_cast(obj, TYPE_DEVICE);
1005
1006 if (dev == NULL) {
1007 return 0;
1008 }
1009
1010 if (dev->realized && object_property_get_bool(obj, "hotpluggable", NULL)) {
1011 *list = g_slist_append(*list, dev);
1012 }
1013
1014 return 0;
1015}
1016
1017static GSList *qdev_build_hotpluggable_device_list(Object *peripheral)
1018{
1019 GSList *list = NULL;
1020
1021 object_child_foreach(peripheral, qdev_add_hotpluggable_device, &list);
1022
1023 return list;
1024}
1025
1026static void peripheral_device_del_completion(ReadLineState *rs,
1027 const char *str)
1028{
1029 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
1030 GSList *list, *item;
1031
1032 list = qdev_build_hotpluggable_device_list(peripheral);
1033 if (!list) {
1034 return;
1035 }
1036
1037 for (item = list; item; item = g_slist_next(item)) {
1038 DeviceState *dev = item->data;
1039
1040 if (dev->id) {
1041 readline_add_completion_of(rs, str, dev->id);
1042 }
1043 }
1044
1045 g_slist_free(list);
1046}
1047
1048void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
1049{
1050 if (nb_args != 2) {
1051 return;
1052 }
1053
1054 readline_set_completion_index(rs, strlen(str));
1055 peripheral_device_del_completion(rs, str);
1056}
1057
1058BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
1059{
1060 DeviceState *dev;
1061 BlockBackend *blk;
1062
1063 GLOBAL_STATE_CODE();
1064
1065 dev = find_device_state(id, errp);
1066 if (dev == NULL) {
1067 return NULL;
1068 }
1069
1070 blk = blk_by_dev(dev);
1071 if (!blk) {
1072 error_setg(errp, "Device does not have a block device backend");
1073 }
1074 return blk;
1075}
1076
1077QemuOptsList qemu_device_opts = {
1078 .name = "device",
1079 .implied_opt_name = "driver",
1080 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
1081 .desc = {
1082
1083
1084
1085
1086
1087 { }
1088 },
1089};
1090
1091QemuOptsList qemu_global_opts = {
1092 .name = "global",
1093 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
1094 .desc = {
1095 {
1096 .name = "driver",
1097 .type = QEMU_OPT_STRING,
1098 },{
1099 .name = "property",
1100 .type = QEMU_OPT_STRING,
1101 },{
1102 .name = "value",
1103 .type = QEMU_OPT_STRING,
1104 },
1105 { }
1106 },
1107};
1108
1109int qemu_global_option(const char *str)
1110{
1111 char driver[64], property[64];
1112 QemuOpts *opts;
1113 int rc, offset;
1114
1115 rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
1116 if (rc == 2 && str[offset] == '=') {
1117 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
1118 qemu_opt_set(opts, "driver", driver, &error_abort);
1119 qemu_opt_set(opts, "property", property, &error_abort);
1120 qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
1121 return 0;
1122 }
1123
1124 opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false);
1125 if (!opts) {
1126 return -1;
1127 }
1128 if (!qemu_opt_get(opts, "driver")
1129 || !qemu_opt_get(opts, "property")
1130 || !qemu_opt_get(opts, "value")) {
1131 error_report("options 'driver', 'property', and 'value'"
1132 " are required");
1133 return -1;
1134 }
1135
1136 return 0;
1137}
1138
1139bool qmp_command_available(const QmpCommand *cmd, Error **errp)
1140{
1141 if (!phase_check(PHASE_MACHINE_READY) &&
1142 !(cmd->options & QCO_ALLOW_PRECONFIG)) {
1143 error_setg(errp, "The command '%s' is permitted only after machine initialization has completed",
1144 cmd->name);
1145 return false;
1146 }
1147 return true;
1148}
1149