block: Use blk_next() in block-backend.c
[qemu/ar7.git] / qdev-monitor.c
blobbe6a07ee4996f09c916282afc5e82058286f1be4
1 /*
2 * Dynamic device configuration and creation.
4 * Copyright (c) 2009 CodeSourcery
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.
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.
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/>.
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"
32 * Aliases were a bad idea from the start. Let's keep them
33 * from spreading further.
35 typedef struct QDevAlias
37 const char *typename;
38 const char *alias;
39 uint32_t arch_mask;
40 } QDevAlias;
42 /* Please keep this table sorted by typename. */
43 static const QDevAlias qdev_alias_table[] = {
44 { "e1000", "e1000-82540em" },
45 { "ich9-ahci", "ahci" },
46 { "kvm-pci-assign", "pci-assign" },
47 { "lsi53c895a", "lsi" },
48 { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_S390X },
49 { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
50 { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X },
51 { "virtio-balloon-pci", "virtio-balloon",
52 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
53 { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X },
54 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
55 { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_S390X },
56 { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
57 { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X },
58 { "virtio-input-host-pci", "virtio-input-host",
59 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
60 { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X },
61 { "virtio-keyboard-pci", "virtio-keyboard",
62 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
63 { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_S390X },
64 { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
65 { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X },
66 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
67 { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_S390X },
68 { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
69 { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X },
70 { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
71 { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X },
72 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
73 { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_S390X },
74 { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
75 { }
78 static const char *qdev_class_get_alias(DeviceClass *dc)
80 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
81 int i;
83 for (i = 0; qdev_alias_table[i].typename; i++) {
84 if (qdev_alias_table[i].arch_mask &&
85 !(qdev_alias_table[i].arch_mask & arch_type)) {
86 continue;
89 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
90 return qdev_alias_table[i].alias;
94 return NULL;
97 static bool qdev_class_has_alias(DeviceClass *dc)
99 return (qdev_class_get_alias(dc) != NULL);
102 static void qdev_print_devinfo(DeviceClass *dc)
104 error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
105 if (dc->bus_type) {
106 error_printf(", bus %s", dc->bus_type);
108 if (qdev_class_has_alias(dc)) {
109 error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
111 if (dc->desc) {
112 error_printf(", desc \"%s\"", dc->desc);
114 if (dc->cannot_instantiate_with_device_add_yet) {
115 error_printf(", no-user");
117 error_printf("\n");
120 static gint devinfo_cmp(gconstpointer a, gconstpointer b)
122 return strcasecmp(object_class_get_name((ObjectClass *)a),
123 object_class_get_name((ObjectClass *)b));
126 static void qdev_print_devinfos(bool show_no_user)
128 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
129 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
130 [DEVICE_CATEGORY_USB] = "USB",
131 [DEVICE_CATEGORY_STORAGE] = "Storage",
132 [DEVICE_CATEGORY_NETWORK] = "Network",
133 [DEVICE_CATEGORY_INPUT] = "Input",
134 [DEVICE_CATEGORY_DISPLAY] = "Display",
135 [DEVICE_CATEGORY_SOUND] = "Sound",
136 [DEVICE_CATEGORY_MISC] = "Misc",
137 [DEVICE_CATEGORY_MAX] = "Uncategorized",
139 GSList *list, *elt;
140 int i;
141 bool cat_printed;
143 list = g_slist_sort(object_class_get_list(TYPE_DEVICE, false),
144 devinfo_cmp);
146 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
147 cat_printed = false;
148 for (elt = list; elt; elt = elt->next) {
149 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
150 TYPE_DEVICE);
151 if ((i < DEVICE_CATEGORY_MAX
152 ? !test_bit(i, dc->categories)
153 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
154 || (!show_no_user
155 && dc->cannot_instantiate_with_device_add_yet)) {
156 continue;
158 if (!cat_printed) {
159 error_printf("%s%s devices:\n", i ? "\n" : "",
160 cat_name[i]);
161 cat_printed = true;
163 qdev_print_devinfo(dc);
167 g_slist_free(list);
170 static int set_property(void *opaque, const char *name, const char *value,
171 Error **errp)
173 Object *obj = opaque;
174 Error *err = NULL;
176 if (strcmp(name, "driver") == 0)
177 return 0;
178 if (strcmp(name, "bus") == 0)
179 return 0;
181 object_property_parse(obj, value, name, &err);
182 if (err != NULL) {
183 error_propagate(errp, err);
184 return -1;
186 return 0;
189 static const char *find_typename_by_alias(const char *alias)
191 int i;
193 for (i = 0; qdev_alias_table[i].alias; i++) {
194 if (qdev_alias_table[i].arch_mask &&
195 !(qdev_alias_table[i].arch_mask & arch_type)) {
196 continue;
199 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
200 return qdev_alias_table[i].typename;
204 return NULL;
207 static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
209 ObjectClass *oc;
210 DeviceClass *dc;
211 const char *original_name = *driver;
213 oc = object_class_by_name(*driver);
214 if (!oc) {
215 const char *typename = find_typename_by_alias(*driver);
217 if (typename) {
218 *driver = typename;
219 oc = object_class_by_name(*driver);
223 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
224 if (*driver != original_name) {
225 error_setg(errp, "'%s' (alias '%s') is not a valid device model"
226 " name", original_name, *driver);
227 } else {
228 error_setg(errp, "'%s' is not a valid device model name", *driver);
230 return NULL;
233 if (object_class_is_abstract(oc)) {
234 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
235 "non-abstract device type");
236 return NULL;
239 dc = DEVICE_CLASS(oc);
240 if (dc->cannot_instantiate_with_device_add_yet ||
241 (qdev_hotplug && !dc->hotpluggable)) {
242 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
243 "pluggable device type");
244 return NULL;
247 return dc;
251 int qdev_device_help(QemuOpts *opts)
253 Error *local_err = NULL;
254 const char *driver;
255 DevicePropertyInfoList *prop_list;
256 DevicePropertyInfoList *prop;
258 driver = qemu_opt_get(opts, "driver");
259 if (driver && is_help_option(driver)) {
260 qdev_print_devinfos(false);
261 return 1;
264 if (!driver || !qemu_opt_has_help_opt(opts)) {
265 return 0;
268 if (!object_class_by_name(driver)) {
269 const char *typename = find_typename_by_alias(driver);
271 if (typename) {
272 driver = typename;
276 prop_list = qmp_device_list_properties(driver, &local_err);
277 if (local_err) {
278 goto error;
281 for (prop = prop_list; prop; prop = prop->next) {
282 error_printf("%s.%s=%s", driver,
283 prop->value->name,
284 prop->value->type);
285 if (prop->value->has_description) {
286 error_printf(" (%s)\n", prop->value->description);
287 } else {
288 error_printf("\n");
292 qapi_free_DevicePropertyInfoList(prop_list);
293 return 1;
295 error:
296 error_report_err(local_err);
297 return 1;
300 static Object *qdev_get_peripheral(void)
302 static Object *dev;
304 if (dev == NULL) {
305 dev = container_get(qdev_get_machine(), "/peripheral");
308 return dev;
311 static Object *qdev_get_peripheral_anon(void)
313 static Object *dev;
315 if (dev == NULL) {
316 dev = container_get(qdev_get_machine(), "/peripheral-anon");
319 return dev;
322 static void qbus_list_bus(DeviceState *dev, Error **errp)
324 BusState *child;
325 const char *sep = " ";
327 error_append_hint(errp, "child buses at \"%s\":",
328 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
329 QLIST_FOREACH(child, &dev->child_bus, sibling) {
330 error_append_hint(errp, "%s\"%s\"", sep, child->name);
331 sep = ", ";
333 error_append_hint(errp, "\n");
336 static void qbus_list_dev(BusState *bus, Error **errp)
338 BusChild *kid;
339 const char *sep = " ";
341 error_append_hint(errp, "devices at \"%s\":", bus->name);
342 QTAILQ_FOREACH(kid, &bus->children, sibling) {
343 DeviceState *dev = kid->child;
344 error_append_hint(errp, "%s\"%s\"", sep,
345 object_get_typename(OBJECT(dev)));
346 if (dev->id) {
347 error_append_hint(errp, "/\"%s\"", dev->id);
349 sep = ", ";
351 error_append_hint(errp, "\n");
354 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
356 BusState *child;
358 QLIST_FOREACH(child, &dev->child_bus, sibling) {
359 if (strcmp(child->name, elem) == 0) {
360 return child;
363 return NULL;
366 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
368 BusChild *kid;
371 * try to match in order:
372 * (1) instance id, if present
373 * (2) driver name
374 * (3) driver alias, if present
376 QTAILQ_FOREACH(kid, &bus->children, sibling) {
377 DeviceState *dev = kid->child;
378 if (dev->id && strcmp(dev->id, elem) == 0) {
379 return dev;
382 QTAILQ_FOREACH(kid, &bus->children, sibling) {
383 DeviceState *dev = kid->child;
384 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
385 return dev;
388 QTAILQ_FOREACH(kid, &bus->children, sibling) {
389 DeviceState *dev = kid->child;
390 DeviceClass *dc = DEVICE_GET_CLASS(dev);
392 if (qdev_class_has_alias(dc) &&
393 strcmp(qdev_class_get_alias(dc), elem) == 0) {
394 return dev;
397 return NULL;
400 static inline bool qbus_is_full(BusState *bus)
402 BusClass *bus_class = BUS_GET_CLASS(bus);
403 return bus_class->max_dev && bus->max_index >= bus_class->max_dev;
407 * Search the tree rooted at @bus for a bus.
408 * If @name, search for a bus with that name. Note that bus names
409 * need not be unique. Yes, that's screwed up.
410 * Else search for a bus that is a subtype of @bus_typename.
411 * If more than one exists, prefer one that can take another device.
412 * Return the bus if found, else %NULL.
414 static BusState *qbus_find_recursive(BusState *bus, const char *name,
415 const char *bus_typename)
417 BusChild *kid;
418 BusState *pick, *child, *ret;
419 bool match;
421 assert(name || bus_typename);
422 if (name) {
423 match = !strcmp(bus->name, name);
424 } else {
425 match = !!object_dynamic_cast(OBJECT(bus), bus_typename);
428 if (match && !qbus_is_full(bus)) {
429 return bus; /* root matches and isn't full */
432 pick = match ? bus : NULL;
434 QTAILQ_FOREACH(kid, &bus->children, sibling) {
435 DeviceState *dev = kid->child;
436 QLIST_FOREACH(child, &dev->child_bus, sibling) {
437 ret = qbus_find_recursive(child, name, bus_typename);
438 if (ret && !qbus_is_full(ret)) {
439 return ret; /* a descendant matches and isn't full */
441 if (ret && !pick) {
442 pick = ret;
447 /* root or a descendant matches, but is full */
448 return pick;
451 static BusState *qbus_find(const char *path, Error **errp)
453 DeviceState *dev;
454 BusState *bus;
455 char elem[128];
456 int pos, len;
458 /* find start element */
459 if (path[0] == '/') {
460 bus = sysbus_get_default();
461 pos = 0;
462 } else {
463 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
464 assert(!path[0]);
465 elem[0] = len = 0;
467 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
468 if (!bus) {
469 error_setg(errp, "Bus '%s' not found", elem);
470 return NULL;
472 pos = len;
475 for (;;) {
476 assert(path[pos] == '/' || !path[pos]);
477 while (path[pos] == '/') {
478 pos++;
480 if (path[pos] == '\0') {
481 break;
484 /* find device */
485 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
486 g_assert_not_reached();
487 elem[0] = len = 0;
489 pos += len;
490 dev = qbus_find_dev(bus, elem);
491 if (!dev) {
492 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
493 "Device '%s' not found", elem);
494 qbus_list_dev(bus, errp);
495 return NULL;
498 assert(path[pos] == '/' || !path[pos]);
499 while (path[pos] == '/') {
500 pos++;
502 if (path[pos] == '\0') {
503 /* last specified element is a device. If it has exactly
504 * one child bus accept it nevertheless */
505 if (dev->num_child_bus == 1) {
506 bus = QLIST_FIRST(&dev->child_bus);
507 break;
509 if (dev->num_child_bus) {
510 error_setg(errp, "Device '%s' has multiple child buses",
511 elem);
512 qbus_list_bus(dev, errp);
513 } else {
514 error_setg(errp, "Device '%s' has no child bus", elem);
516 return NULL;
519 /* find bus */
520 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
521 g_assert_not_reached();
522 elem[0] = len = 0;
524 pos += len;
525 bus = qbus_find_bus(dev, elem);
526 if (!bus) {
527 error_setg(errp, "Bus '%s' not found", elem);
528 qbus_list_bus(dev, errp);
529 return NULL;
533 if (qbus_is_full(bus)) {
534 error_setg(errp, "Bus '%s' is full", path);
535 return NULL;
537 return bus;
540 DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
542 DeviceClass *dc;
543 const char *driver, *path, *id;
544 DeviceState *dev;
545 BusState *bus = NULL;
546 Error *err = NULL;
548 driver = qemu_opt_get(opts, "driver");
549 if (!driver) {
550 error_setg(errp, QERR_MISSING_PARAMETER, "driver");
551 return NULL;
554 /* find driver */
555 dc = qdev_get_device_class(&driver, errp);
556 if (!dc) {
557 return NULL;
560 /* find bus */
561 path = qemu_opt_get(opts, "bus");
562 if (path != NULL) {
563 bus = qbus_find(path, errp);
564 if (!bus) {
565 return NULL;
567 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
568 error_setg(errp, "Device '%s' can't go on %s bus",
569 driver, object_get_typename(OBJECT(bus)));
570 return NULL;
572 } else if (dc->bus_type != NULL) {
573 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
574 if (!bus || qbus_is_full(bus)) {
575 error_setg(errp, "No '%s' bus found for device '%s'",
576 dc->bus_type, driver);
577 return NULL;
580 if (qdev_hotplug && bus && !qbus_is_hotpluggable(bus)) {
581 error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
582 return NULL;
585 /* create device */
586 dev = DEVICE(object_new(driver));
588 if (bus) {
589 qdev_set_parent_bus(dev, bus);
592 id = qemu_opts_id(opts);
593 if (id) {
594 dev->id = id;
597 if (dev->id) {
598 object_property_add_child(qdev_get_peripheral(), dev->id,
599 OBJECT(dev), NULL);
600 } else {
601 static int anon_count;
602 gchar *name = g_strdup_printf("device[%d]", anon_count++);
603 object_property_add_child(qdev_get_peripheral_anon(), name,
604 OBJECT(dev), NULL);
605 g_free(name);
608 /* set properties */
609 if (qemu_opt_foreach(opts, set_property, dev, &err)) {
610 error_propagate(errp, err);
611 object_unparent(OBJECT(dev));
612 object_unref(OBJECT(dev));
613 return NULL;
616 dev->opts = opts;
617 object_property_set_bool(OBJECT(dev), true, "realized", &err);
618 if (err != NULL) {
619 error_propagate(errp, err);
620 dev->opts = NULL;
621 object_unparent(OBJECT(dev));
622 object_unref(OBJECT(dev));
623 return NULL;
625 return dev;
629 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
630 static void qbus_print(Monitor *mon, BusState *bus, int indent);
632 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
633 int indent)
635 if (!props)
636 return;
637 for (; props->name; props++) {
638 Error *err = NULL;
639 char *value;
640 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
641 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
642 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
643 } else {
644 value = object_property_print(OBJECT(dev), props->name, true, &err);
646 g_free(legacy_name);
648 if (err) {
649 error_free(err);
650 continue;
652 qdev_printf("%s = %s\n", props->name,
653 value && *value ? value : "<null>");
654 g_free(value);
658 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
660 BusClass *bc = BUS_GET_CLASS(bus);
662 if (bc->print_dev) {
663 bc->print_dev(mon, dev, indent);
667 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
669 ObjectClass *class;
670 BusState *child;
671 NamedGPIOList *ngl;
673 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
674 dev->id ? dev->id : "");
675 indent += 2;
676 QLIST_FOREACH(ngl, &dev->gpios, node) {
677 if (ngl->num_in) {
678 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
679 ngl->num_in);
681 if (ngl->num_out) {
682 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
683 ngl->num_out);
686 class = object_get_class(OBJECT(dev));
687 do {
688 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
689 class = object_class_get_parent(class);
690 } while (class != object_class_by_name(TYPE_DEVICE));
691 bus_print_dev(dev->parent_bus, mon, dev, indent);
692 QLIST_FOREACH(child, &dev->child_bus, sibling) {
693 qbus_print(mon, child, indent);
697 static void qbus_print(Monitor *mon, BusState *bus, int indent)
699 BusChild *kid;
701 qdev_printf("bus: %s\n", bus->name);
702 indent += 2;
703 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
704 QTAILQ_FOREACH(kid, &bus->children, sibling) {
705 DeviceState *dev = kid->child;
706 qdev_print(mon, dev, indent);
709 #undef qdev_printf
711 void hmp_info_qtree(Monitor *mon, const QDict *qdict)
713 if (sysbus_get_default())
714 qbus_print(mon, sysbus_get_default(), 0);
717 void hmp_info_qdm(Monitor *mon, const QDict *qdict)
719 qdev_print_devinfos(true);
722 typedef struct QOMCompositionState {
723 Monitor *mon;
724 int indent;
725 } QOMCompositionState;
727 static void print_qom_composition(Monitor *mon, Object *obj, int indent);
729 static int print_qom_composition_child(Object *obj, void *opaque)
731 QOMCompositionState *s = opaque;
733 print_qom_composition(s->mon, obj, s->indent);
735 return 0;
738 static void print_qom_composition(Monitor *mon, Object *obj, int indent)
740 QOMCompositionState s = {
741 .mon = mon,
742 .indent = indent + 2,
744 char *name;
746 if (obj == object_get_root()) {
747 name = g_strdup("");
748 } else {
749 name = object_get_canonical_path_component(obj);
751 monitor_printf(mon, "%*s/%s (%s)\n", indent, "", name,
752 object_get_typename(obj));
753 g_free(name);
754 object_child_foreach(obj, print_qom_composition_child, &s);
757 void hmp_info_qom_tree(Monitor *mon, const QDict *dict)
759 const char *path = qdict_get_try_str(dict, "path");
760 Object *obj;
761 bool ambiguous = false;
763 if (path) {
764 obj = object_resolve_path(path, &ambiguous);
765 if (!obj) {
766 monitor_printf(mon, "Path '%s' could not be resolved.\n", path);
767 return;
769 if (ambiguous) {
770 monitor_printf(mon, "Warning: Path '%s' is ambiguous.\n", path);
771 return;
773 } else {
774 obj = qdev_get_machine();
776 print_qom_composition(mon, obj, 0);
779 void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
781 Error *local_err = NULL;
782 QemuOpts *opts;
783 DeviceState *dev;
785 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
786 if (local_err) {
787 error_propagate(errp, local_err);
788 return;
790 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
791 qemu_opts_del(opts);
792 return;
794 dev = qdev_device_add(opts, &local_err);
795 if (!dev) {
796 error_propagate(errp, local_err);
797 qemu_opts_del(opts);
798 return;
800 object_unref(OBJECT(dev));
803 void qmp_device_del(const char *id, Error **errp)
805 Object *obj;
807 if (id[0] == '/') {
808 obj = object_resolve_path(id, NULL);
809 } else {
810 char *root_path = object_get_canonical_path(qdev_get_peripheral());
811 char *path = g_strdup_printf("%s/%s", root_path, id);
813 g_free(root_path);
814 obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
815 g_free(path);
818 if (!obj) {
819 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
820 "Device '%s' not found", id);
821 return;
824 if (!object_dynamic_cast(obj, TYPE_DEVICE)) {
825 error_setg(errp, "%s is not a hotpluggable device", id);
826 return;
829 qdev_unplug(DEVICE(obj), errp);
832 void qdev_machine_init(void)
834 qdev_get_peripheral_anon();
835 qdev_get_peripheral();
838 QemuOptsList qemu_device_opts = {
839 .name = "device",
840 .implied_opt_name = "driver",
841 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
842 .desc = {
844 * no elements => accept any
845 * sanity checking will happen later
846 * when setting device properties
848 { /* end of list */ }
852 QemuOptsList qemu_global_opts = {
853 .name = "global",
854 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
855 .desc = {
857 .name = "driver",
858 .type = QEMU_OPT_STRING,
860 .name = "property",
861 .type = QEMU_OPT_STRING,
863 .name = "value",
864 .type = QEMU_OPT_STRING,
866 { /* end of list */ }
870 int qemu_global_option(const char *str)
872 char driver[64], property[64];
873 QemuOpts *opts;
874 int rc, offset;
876 rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
877 if (rc == 2 && str[offset] == '=') {
878 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
879 qemu_opt_set(opts, "driver", driver, &error_abort);
880 qemu_opt_set(opts, "property", property, &error_abort);
881 qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
882 return 0;
885 opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false);
886 if (!opts) {
887 return -1;
890 return 0;