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