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 /* The theory here is that it should be possible to create a machine without
21 knowledge of specific devices. Historically board init routines have
22 passed a bunch of arguments to each device, requiring the board know
23 exactly which device it is dealing with. This file provides an abstract
24 API for device configuration and initialization. Devices will generally
25 inherit from a particular bus (e.g. PCI or I2C) rather than
28 #include "qemu/osdep.h"
30 #include "hw/fw-path-provider.h"
31 #include "sysemu/sysemu.h"
32 #include "qapi/qmp/qerror.h"
33 #include "qapi/visitor.h"
34 #include "qapi/qmp/qjson.h"
35 #include "qemu/error-report.h"
36 #include "hw/hotplug.h"
37 #include "hw/boards.h"
38 #include "qapi-event.h"
41 static bool qdev_hot_added = false;
42 static bool qdev_hot_removed = false;
44 const VMStateDescription *qdev_get_vmsd(DeviceState *dev)
46 DeviceClass *dc = DEVICE_GET_CLASS(dev);
50 const char *qdev_fw_name(DeviceState *dev)
52 DeviceClass *dc = DEVICE_GET_CLASS(dev);
58 return object_get_typename(OBJECT(dev));
61 static void qdev_property_add_legacy(DeviceState *dev, Property *prop,
64 static void bus_remove_child(BusState *bus, DeviceState *child)
68 QTAILQ_FOREACH(kid, &bus->children, sibling) {
69 if (kid->child == child) {
72 snprintf(name, sizeof(name), "child[%d]", kid->index);
73 QTAILQ_REMOVE(&bus->children, kid, sibling);
75 /* This gives back ownership of kid->child back to us. */
76 object_property_del(OBJECT(bus), name, NULL);
77 object_unref(OBJECT(kid->child));
84 static void bus_add_child(BusState *bus, DeviceState *child)
87 BusChild *kid = g_malloc0(sizeof(*kid));
89 kid->index = bus->max_index++;
91 object_ref(OBJECT(kid->child));
93 QTAILQ_INSERT_HEAD(&bus->children, kid, sibling);
95 /* This transfers ownership of kid->child to the property. */
96 snprintf(name, sizeof(name), "child[%d]", kid->index);
97 object_property_add_link(OBJECT(bus), name,
98 object_get_typename(OBJECT(child)),
99 (Object **)&kid->child,
100 NULL, /* read-only property */
101 0, /* return ownership on prop deletion */
105 void qdev_set_parent_bus(DeviceState *dev, BusState *bus)
107 dev->parent_bus = bus;
108 object_ref(OBJECT(bus));
109 bus_add_child(bus, dev);
112 /* Create a new device. This only initializes the device state
113 structure and allows properties to be set. The device still needs
114 to be realized. See qdev-core.h. */
115 DeviceState *qdev_create(BusState *bus, const char *name)
119 dev = qdev_try_create(bus, name);
122 error_report("Unknown device '%s' for bus '%s'", name,
123 object_get_typename(OBJECT(bus)));
125 error_report("Unknown device '%s' for default sysbus", name);
133 DeviceState *qdev_try_create(BusState *bus, const char *type)
137 if (object_class_by_name(type) == NULL) {
140 dev = DEVICE(object_new(type));
146 bus = sysbus_get_default();
149 qdev_set_parent_bus(dev, bus);
150 object_unref(OBJECT(dev));
154 static QTAILQ_HEAD(device_listeners, DeviceListener) device_listeners
155 = QTAILQ_HEAD_INITIALIZER(device_listeners);
157 enum ListenerDirection { Forward, Reverse };
159 #define DEVICE_LISTENER_CALL(_callback, _direction, _args...) \
161 DeviceListener *_listener; \
163 switch (_direction) { \
165 QTAILQ_FOREACH(_listener, &device_listeners, link) { \
166 if (_listener->_callback) { \
167 _listener->_callback(_listener, ##_args); \
172 QTAILQ_FOREACH_REVERSE(_listener, &device_listeners, \
173 device_listeners, link) { \
174 if (_listener->_callback) { \
175 _listener->_callback(_listener, ##_args); \
184 static int device_listener_add(DeviceState *dev, void *opaque)
186 DEVICE_LISTENER_CALL(realize, Forward, dev);
191 void device_listener_register(DeviceListener *listener)
193 QTAILQ_INSERT_TAIL(&device_listeners, listener, link);
195 qbus_walk_children(sysbus_get_default(), NULL, NULL, device_listener_add,
199 void device_listener_unregister(DeviceListener *listener)
201 QTAILQ_REMOVE(&device_listeners, listener, link);
204 static void device_realize(DeviceState *dev, Error **errp)
206 DeviceClass *dc = DEVICE_GET_CLASS(dev);
209 int rc = dc->init(dev);
211 error_setg(errp, "Device initialization failed.");
217 static void device_unrealize(DeviceState *dev, Error **errp)
219 DeviceClass *dc = DEVICE_GET_CLASS(dev);
222 int rc = dc->exit(dev);
224 error_setg(errp, "Device exit failed.");
230 void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
231 int required_for_version)
233 assert(!dev->realized);
234 dev->instance_id_alias = alias_id;
235 dev->alias_required_for_version = required_for_version;
238 HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev)
240 HotplugHandler *hotplug_ctrl = NULL;
242 if (dev->parent_bus && dev->parent_bus->hotplug_handler) {
243 hotplug_ctrl = dev->parent_bus->hotplug_handler;
244 } else if (object_dynamic_cast(qdev_get_machine(), TYPE_MACHINE)) {
245 MachineState *machine = MACHINE(qdev_get_machine());
246 MachineClass *mc = MACHINE_GET_CLASS(machine);
248 if (mc->get_hotplug_handler) {
249 hotplug_ctrl = mc->get_hotplug_handler(machine, dev);
255 void qdev_unplug(DeviceState *dev, Error **errp)
257 DeviceClass *dc = DEVICE_GET_CLASS(dev);
258 HotplugHandler *hotplug_ctrl;
259 HotplugHandlerClass *hdc;
261 if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) {
262 error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
266 if (!dc->hotpluggable) {
267 error_setg(errp, QERR_DEVICE_NO_HOTPLUG,
268 object_get_typename(OBJECT(dev)));
272 qdev_hot_removed = true;
274 hotplug_ctrl = qdev_get_hotplug_handler(dev);
275 /* hotpluggable device MUST have HotplugHandler, if it doesn't
276 * then something is very wrong with it */
277 g_assert(hotplug_ctrl);
279 /* If device supports async unplug just request it to be done,
280 * otherwise just remove it synchronously */
281 hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl);
282 if (hdc->unplug_request) {
283 hotplug_handler_unplug_request(hotplug_ctrl, dev, errp);
285 hotplug_handler_unplug(hotplug_ctrl, dev, errp);
289 static int qdev_reset_one(DeviceState *dev, void *opaque)
296 static int qbus_reset_one(BusState *bus, void *opaque)
298 BusClass *bc = BUS_GET_CLASS(bus);
305 void qdev_reset_all(DeviceState *dev)
307 qdev_walk_children(dev, NULL, NULL, qdev_reset_one, qbus_reset_one, NULL);
310 void qdev_reset_all_fn(void *opaque)
312 qdev_reset_all(DEVICE(opaque));
315 void qbus_reset_all(BusState *bus)
317 qbus_walk_children(bus, NULL, NULL, qdev_reset_one, qbus_reset_one, NULL);
320 void qbus_reset_all_fn(void *opaque)
322 BusState *bus = opaque;
326 /* can be used as ->unplug() callback for the simple cases */
327 void qdev_simple_device_unplug_cb(HotplugHandler *hotplug_dev,
328 DeviceState *dev, Error **errp)
331 object_unparent(OBJECT(dev));
336 * Device properties should be set before calling this function. IRQs
337 * and MMIO regions should be connected/mapped after calling this
339 * On failure, report an error with error_report() and terminate the
340 * program. This is okay during machine creation. Don't use for
341 * hotplug, because there callers need to recover from failure.
342 * Exception: if you know the device's init() callback can't fail,
343 * then qdev_init_nofail() can't fail either, and is therefore usable
344 * even then. But relying on the device implementation that way is
345 * somewhat unclean, and best avoided.
347 void qdev_init_nofail(DeviceState *dev)
351 assert(!dev->realized);
353 object_property_set_bool(OBJECT(dev), true, "realized", &err);
355 error_reportf_err(err, "Initialization of device %s failed: ",
356 object_get_typename(OBJECT(dev)));
361 void qdev_machine_creation_done(void)
364 * ok, initial machine setup is done, starting from now we can
365 * only create hotpluggable devices
370 bool qdev_machine_modified(void)
372 return qdev_hot_added || qdev_hot_removed;
375 BusState *qdev_get_parent_bus(DeviceState *dev)
377 return dev->parent_bus;
380 static NamedGPIOList *qdev_get_named_gpio_list(DeviceState *dev,
385 QLIST_FOREACH(ngl, &dev->gpios, node) {
386 /* NULL is a valid and matchable name, otherwise do a normal
389 if ((!ngl->name && !name) ||
390 (name && ngl->name && strcmp(name, ngl->name) == 0)) {
395 ngl = g_malloc0(sizeof(*ngl));
396 ngl->name = g_strdup(name);
397 QLIST_INSERT_HEAD(&dev->gpios, ngl, node);
401 void qdev_init_gpio_in_named(DeviceState *dev, qemu_irq_handler handler,
402 const char *name, int n)
405 NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name);
407 assert(gpio_list->num_out == 0 || !name);
408 gpio_list->in = qemu_extend_irqs(gpio_list->in, gpio_list->num_in, handler,
412 name = "unnamed-gpio-in";
414 for (i = gpio_list->num_in; i < gpio_list->num_in + n; i++) {
415 gchar *propname = g_strdup_printf("%s[%u]", name, i);
417 object_property_add_child(OBJECT(dev), propname,
418 OBJECT(gpio_list->in[i]), &error_abort);
422 gpio_list->num_in += n;
425 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n)
427 qdev_init_gpio_in_named(dev, handler, NULL, n);
430 void qdev_init_gpio_out_named(DeviceState *dev, qemu_irq *pins,
431 const char *name, int n)
434 NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name);
436 assert(gpio_list->num_in == 0 || !name);
439 name = "unnamed-gpio-out";
441 memset(pins, 0, sizeof(*pins) * n);
442 for (i = 0; i < n; ++i) {
443 gchar *propname = g_strdup_printf("%s[%u]", name,
444 gpio_list->num_out + i);
446 object_property_add_link(OBJECT(dev), propname, TYPE_IRQ,
448 object_property_allow_set_link,
449 OBJ_PROP_LINK_UNREF_ON_RELEASE,
453 gpio_list->num_out += n;
456 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n)
458 qdev_init_gpio_out_named(dev, pins, NULL, n);
461 qemu_irq qdev_get_gpio_in_named(DeviceState *dev, const char *name, int n)
463 NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name);
465 assert(n >= 0 && n < gpio_list->num_in);
466 return gpio_list->in[n];
469 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n)
471 return qdev_get_gpio_in_named(dev, NULL, n);
474 void qdev_connect_gpio_out_named(DeviceState *dev, const char *name, int n,
477 char *propname = g_strdup_printf("%s[%d]",
478 name ? name : "unnamed-gpio-out", n);
480 /* We need a name for object_property_set_link to work. If the
481 * object has a parent, object_property_add_child will come back
482 * with an error without doing anything. If it has none, it will
483 * never fail. So we can just call it with a NULL Error pointer.
485 object_property_add_child(container_get(qdev_get_machine(),
487 "non-qdev-gpio[*]", OBJECT(pin), NULL);
489 object_property_set_link(OBJECT(dev), OBJECT(pin), propname, &error_abort);
493 qemu_irq qdev_get_gpio_out_connector(DeviceState *dev, const char *name, int n)
495 char *propname = g_strdup_printf("%s[%d]",
496 name ? name : "unnamed-gpio-out", n);
498 qemu_irq ret = (qemu_irq)object_property_get_link(OBJECT(dev), propname,
504 /* disconnect a GPIO output, returning the disconnected input (if any) */
506 static qemu_irq qdev_disconnect_gpio_out_named(DeviceState *dev,
507 const char *name, int n)
509 char *propname = g_strdup_printf("%s[%d]",
510 name ? name : "unnamed-gpio-out", n);
512 qemu_irq ret = (qemu_irq)object_property_get_link(OBJECT(dev), propname,
515 object_property_set_link(OBJECT(dev), NULL, propname, NULL);
521 qemu_irq qdev_intercept_gpio_out(DeviceState *dev, qemu_irq icpt,
522 const char *name, int n)
524 qemu_irq disconnected = qdev_disconnect_gpio_out_named(dev, name, n);
525 qdev_connect_gpio_out_named(dev, name, n, icpt);
529 void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin)
531 qdev_connect_gpio_out_named(dev, NULL, n, pin);
534 void qdev_pass_gpios(DeviceState *dev, DeviceState *container,
538 NamedGPIOList *ngl = qdev_get_named_gpio_list(dev, name);
540 for (i = 0; i < ngl->num_in; i++) {
541 const char *nm = ngl->name ? ngl->name : "unnamed-gpio-in";
542 char *propname = g_strdup_printf("%s[%d]", nm, i);
544 object_property_add_alias(OBJECT(container), propname,
545 OBJECT(dev), propname,
549 for (i = 0; i < ngl->num_out; i++) {
550 const char *nm = ngl->name ? ngl->name : "unnamed-gpio-out";
551 char *propname = g_strdup_printf("%s[%d]", nm, i);
553 object_property_add_alias(OBJECT(container), propname,
554 OBJECT(dev), propname,
558 QLIST_REMOVE(ngl, node);
559 QLIST_INSERT_HEAD(&container->gpios, ngl, node);
562 BusState *qdev_get_child_bus(DeviceState *dev, const char *name)
565 Object *child = object_resolve_path_component(OBJECT(dev), name);
567 bus = (BusState *)object_dynamic_cast(child, TYPE_BUS);
572 QLIST_FOREACH(bus, &dev->child_bus, sibling) {
573 if (strcmp(name, bus->name) == 0) {
580 int qdev_walk_children(DeviceState *dev,
581 qdev_walkerfn *pre_devfn, qbus_walkerfn *pre_busfn,
582 qdev_walkerfn *post_devfn, qbus_walkerfn *post_busfn,
589 err = pre_devfn(dev, opaque);
595 QLIST_FOREACH(bus, &dev->child_bus, sibling) {
596 err = qbus_walk_children(bus, pre_devfn, pre_busfn,
597 post_devfn, post_busfn, opaque);
604 err = post_devfn(dev, opaque);
613 DeviceState *qdev_find_recursive(BusState *bus, const char *id)
619 QTAILQ_FOREACH(kid, &bus->children, sibling) {
620 DeviceState *dev = kid->child;
622 if (dev->id && strcmp(dev->id, id) == 0) {
626 QLIST_FOREACH(child, &dev->child_bus, sibling) {
627 ret = qdev_find_recursive(child, id);
636 static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev)
638 BusClass *bc = BUS_GET_CLASS(bus);
640 if (bc->get_fw_dev_path) {
641 return bc->get_fw_dev_path(dev);
647 static char *qdev_get_fw_dev_path_from_handler(BusState *bus, DeviceState *dev)
649 Object *obj = OBJECT(dev);
652 while (!d && obj->parent) {
654 d = fw_path_provider_try_get_dev_path(obj, bus, dev);
659 char *qdev_get_own_fw_dev_path_from_handler(BusState *bus, DeviceState *dev)
661 Object *obj = OBJECT(dev);
663 return fw_path_provider_try_get_dev_path(obj, bus, dev);
666 static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size)
670 if (dev && dev->parent_bus) {
672 l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size);
673 d = qdev_get_fw_dev_path_from_handler(dev->parent_bus, dev);
675 d = bus_get_fw_dev_path(dev->parent_bus, dev);
678 l += snprintf(p + l, size - l, "%s", d);
684 l += snprintf(p + l , size - l, "/");
689 char* qdev_get_fw_dev_path(DeviceState *dev)
694 l = qdev_get_fw_dev_path_helper(dev, path, 128);
698 return g_strdup(path);
701 char *qdev_get_dev_path(DeviceState *dev)
705 if (!dev || !dev->parent_bus) {
709 bc = BUS_GET_CLASS(dev->parent_bus);
710 if (bc->get_dev_path) {
711 return bc->get_dev_path(dev);
718 * Legacy property handling
721 static void qdev_get_legacy_property(Object *obj, Visitor *v,
722 const char *name, void *opaque,
725 DeviceState *dev = DEVICE(obj);
726 Property *prop = opaque;
731 prop->info->print(dev, prop, buffer, sizeof(buffer));
732 visit_type_str(v, name, &ptr, errp);
736 * @qdev_add_legacy_property - adds a legacy property
738 * Do not use this is new code! Properties added through this interface will
739 * be given names and types in the "legacy" namespace.
741 * Legacy properties are string versions of other OOM properties. The format
742 * of the string depends on the property type.
744 static void qdev_property_add_legacy(DeviceState *dev, Property *prop,
749 /* Register pointer properties as legacy properties */
750 if (!prop->info->print && prop->info->get) {
754 name = g_strdup_printf("legacy-%s", prop->name);
755 object_property_add(OBJECT(dev), name, "str",
756 prop->info->print ? qdev_get_legacy_property : prop->info->get,
765 * @qdev_property_add_static - add a @Property to a device.
767 * Static properties access data in a struct. The actual type of the
768 * property and the field depends on the property type.
770 void qdev_property_add_static(DeviceState *dev, Property *prop,
773 Error *local_err = NULL;
774 Object *obj = OBJECT(dev);
777 * TODO qdev_prop_ptr does not have getters or setters. It must
778 * go now that it can be replaced with links. The test should be
779 * removed along with it: all static properties are read/write.
781 if (!prop->info->get && !prop->info->set) {
785 object_property_add(obj, prop->name, prop->info->name,
786 prop->info->get, prop->info->set,
791 error_propagate(errp, local_err);
795 object_property_set_description(obj, prop->name,
796 prop->info->description,
799 if (prop->qtype == QTYPE_NONE) {
803 if (prop->qtype == QTYPE_QBOOL) {
804 object_property_set_bool(obj, prop->defval, prop->name, &error_abort);
805 } else if (prop->info->enum_table) {
806 object_property_set_str(obj, prop->info->enum_table[prop->defval],
807 prop->name, &error_abort);
808 } else if (prop->qtype == QTYPE_QINT) {
809 object_property_set_int(obj, prop->defval, prop->name, &error_abort);
813 /* @qdev_alias_all_properties - Add alias properties to the source object for
814 * all qdev properties on the target DeviceState.
816 void qdev_alias_all_properties(DeviceState *target, Object *source)
821 class = object_get_class(OBJECT(target));
823 DeviceClass *dc = DEVICE_CLASS(class);
825 for (prop = dc->props; prop && prop->name; prop++) {
826 object_property_add_alias(source, prop->name,
827 OBJECT(target), prop->name,
830 class = object_class_get_parent(class);
831 } while (class != object_class_by_name(TYPE_DEVICE));
834 static int qdev_add_hotpluggable_device(Object *obj, void *opaque)
836 GSList **list = opaque;
837 DeviceState *dev = (DeviceState *)object_dynamic_cast(OBJECT(obj),
844 if (dev->realized && object_property_get_bool(obj, "hotpluggable", NULL)) {
845 *list = g_slist_append(*list, dev);
851 GSList *qdev_build_hotpluggable_device_list(Object *peripheral)
855 object_child_foreach(peripheral, qdev_add_hotpluggable_device, &list);
860 static bool device_get_realized(Object *obj, Error **errp)
862 DeviceState *dev = DEVICE(obj);
863 return dev->realized;
866 static void device_set_realized(Object *obj, bool value, Error **errp)
868 DeviceState *dev = DEVICE(obj);
869 DeviceClass *dc = DEVICE_GET_CLASS(dev);
870 HotplugHandler *hotplug_ctrl;
872 Error *local_err = NULL;
874 if (dev->hotplugged && !dc->hotpluggable) {
875 error_setg(errp, QERR_DEVICE_NO_HOTPLUG, object_get_typename(obj));
879 if (value && !dev->realized) {
881 static int unattached_count;
882 gchar *name = g_strdup_printf("device[%d]", unattached_count++);
884 object_property_add_child(container_get(qdev_get_machine(),
886 name, obj, &error_abort);
891 dc->realize(dev, &local_err);
894 if (local_err != NULL) {
898 DEVICE_LISTENER_CALL(realize, Forward, dev);
900 hotplug_ctrl = qdev_get_hotplug_handler(dev);
902 hotplug_handler_plug(hotplug_ctrl, dev, &local_err);
905 if (local_err != NULL) {
906 goto post_realize_fail;
909 if (qdev_get_vmsd(dev)) {
910 vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev,
911 dev->instance_id_alias,
912 dev->alias_required_for_version);
915 QLIST_FOREACH(bus, &dev->child_bus, sibling) {
916 object_property_set_bool(OBJECT(bus), true, "realized",
918 if (local_err != NULL) {
919 goto child_realize_fail;
922 if (dev->hotplugged) {
925 dev->pending_deleted_event = false;
926 } else if (!value && dev->realized) {
927 Error **local_errp = NULL;
928 QLIST_FOREACH(bus, &dev->child_bus, sibling) {
929 local_errp = local_err ? NULL : &local_err;
930 object_property_set_bool(OBJECT(bus), false, "realized",
933 if (qdev_get_vmsd(dev)) {
934 vmstate_unregister(dev, qdev_get_vmsd(dev), dev);
937 local_errp = local_err ? NULL : &local_err;
938 dc->unrealize(dev, local_errp);
940 dev->pending_deleted_event = true;
941 DEVICE_LISTENER_CALL(unrealize, Reverse, dev);
944 if (local_err != NULL) {
948 dev->realized = value;
952 QLIST_FOREACH(bus, &dev->child_bus, sibling) {
953 object_property_set_bool(OBJECT(bus), false, "realized",
957 if (qdev_get_vmsd(dev)) {
958 vmstate_unregister(dev, qdev_get_vmsd(dev), dev);
963 dc->unrealize(dev, NULL);
967 error_propagate(errp, local_err);
970 static bool device_get_hotpluggable(Object *obj, Error **errp)
972 DeviceClass *dc = DEVICE_GET_CLASS(obj);
973 DeviceState *dev = DEVICE(obj);
975 return dc->hotpluggable && (dev->parent_bus == NULL ||
976 qbus_is_hotpluggable(dev->parent_bus));
979 static bool device_get_hotplugged(Object *obj, Error **err)
981 DeviceState *dev = DEVICE(obj);
983 return dev->hotplugged;
986 static void device_set_hotplugged(Object *obj, bool value, Error **err)
988 DeviceState *dev = DEVICE(obj);
990 dev->hotplugged = value;
993 static void device_initfn(Object *obj)
995 DeviceState *dev = DEVICE(obj);
1000 dev->hotplugged = 1;
1001 qdev_hot_added = true;
1004 dev->instance_id_alias = -1;
1005 dev->realized = false;
1007 object_property_add_bool(obj, "realized",
1008 device_get_realized, device_set_realized, NULL);
1009 object_property_add_bool(obj, "hotpluggable",
1010 device_get_hotpluggable, NULL, NULL);
1011 object_property_add_bool(obj, "hotplugged",
1012 device_get_hotplugged, device_set_hotplugged,
1015 class = object_get_class(OBJECT(dev));
1017 for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) {
1018 qdev_property_add_legacy(dev, prop, &error_abort);
1019 qdev_property_add_static(dev, prop, &error_abort);
1021 class = object_class_get_parent(class);
1022 } while (class != object_class_by_name(TYPE_DEVICE));
1024 object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS,
1025 (Object **)&dev->parent_bus, NULL, 0,
1027 QLIST_INIT(&dev->gpios);
1030 static void device_post_init(Object *obj)
1032 qdev_prop_set_globals(DEVICE(obj));
1035 /* Unlink device from bus and free the structure. */
1036 static void device_finalize(Object *obj)
1038 NamedGPIOList *ngl, *next;
1040 DeviceState *dev = DEVICE(obj);
1042 QLIST_FOREACH_SAFE(ngl, &dev->gpios, node, next) {
1043 QLIST_REMOVE(ngl, node);
1044 qemu_free_irqs(ngl->in, ngl->num_in);
1047 /* ngl->out irqs are owned by the other end and should not be freed
1053 static void device_class_base_init(ObjectClass *class, void *data)
1055 DeviceClass *klass = DEVICE_CLASS(class);
1057 /* We explicitly look up properties in the superclasses,
1058 * so do not propagate them to the subclasses.
1060 klass->props = NULL;
1063 static void device_unparent(Object *obj)
1065 DeviceState *dev = DEVICE(obj);
1068 if (dev->realized) {
1069 object_property_set_bool(obj, false, "realized", NULL);
1071 while (dev->num_child_bus) {
1072 bus = QLIST_FIRST(&dev->child_bus);
1073 object_unparent(OBJECT(bus));
1075 if (dev->parent_bus) {
1076 bus_remove_child(dev->parent_bus, dev);
1077 object_unref(OBJECT(dev->parent_bus));
1078 dev->parent_bus = NULL;
1081 /* Only send event if the device had been completely realized */
1082 if (dev->pending_deleted_event) {
1083 gchar *path = object_get_canonical_path(OBJECT(dev));
1085 qapi_event_send_device_deleted(!!dev->id, dev->id, path, &error_abort);
1089 qemu_opts_del(dev->opts);
1093 static void device_class_init(ObjectClass *class, void *data)
1095 DeviceClass *dc = DEVICE_CLASS(class);
1097 class->unparent = device_unparent;
1098 dc->realize = device_realize;
1099 dc->unrealize = device_unrealize;
1101 /* by default all devices were considered as hotpluggable,
1102 * so with intent to check it in generic qdev_unplug() /
1103 * device_set_realized() functions make every device
1104 * hotpluggable. Devices that shouldn't be hotpluggable,
1105 * should override it in their class_init()
1107 dc->hotpluggable = true;
1110 void device_reset(DeviceState *dev)
1112 DeviceClass *klass = DEVICE_GET_CLASS(dev);
1119 Object *qdev_get_machine(void)
1124 dev = container_get(object_get_root(), "/machine");
1130 static const TypeInfo device_type_info = {
1131 .name = TYPE_DEVICE,
1132 .parent = TYPE_OBJECT,
1133 .instance_size = sizeof(DeviceState),
1134 .instance_init = device_initfn,
1135 .instance_post_init = device_post_init,
1136 .instance_finalize = device_finalize,
1137 .class_base_init = device_class_base_init,
1138 .class_init = device_class_init,
1140 .class_size = sizeof(DeviceClass),
1143 static void qdev_register_types(void)
1145 type_register_static(&device_type_info);
1148 type_init(qdev_register_types)