inherit from a particular bus (e.g. PCI or I2C) rather than
this API directly. */
-#include "net/net.h"
#include "qdev.h"
#include "sysemu/sysemu.h"
#include "qapi/error.h"
snprintf(name, sizeof(name), "child[%d]", kid->index);
QTAILQ_REMOVE(&bus->children, kid, sibling);
+
+ /* This gives back ownership of kid->child back to us. */
object_property_del(OBJECT(bus), name, NULL);
+ object_unref(OBJECT(kid->child));
g_free(kid);
return;
}
kid->index = bus->max_index++;
kid->child = child;
+ object_ref(OBJECT(kid->child));
QTAILQ_INSERT_HEAD(&bus->children, kid, sibling);
+ /* This transfers ownership of kid->child to the property. */
snprintf(name, sizeof(name), "child[%d]", kid->index);
object_property_add_link(OBJECT(bus), name,
object_get_typename(OBJECT(child)),
void qdev_set_parent_bus(DeviceState *dev, BusState *bus)
{
dev->parent_bus = bus;
+ object_ref(OBJECT(bus));
bus_add_child(bus, dev);
}
dev = qdev_try_create(bus, name);
if (!dev) {
if (bus) {
- error_report("Unknown device '%s' for bus '%s'\n", name,
+ error_report("Unknown device '%s' for bus '%s'", name,
object_get_typename(OBJECT(bus)));
abort();
} else {
- error_report("Unknown device '%s' for default sysbus\n", name);
+ error_report("Unknown device '%s' for default sysbus", name);
abort();
}
}
}
qdev_set_parent_bus(dev, bus);
-
+ object_unref(OBJECT(dev));
return dev;
}
Return 0 on success. */
int qdev_init(DeviceState *dev)
{
- DeviceClass *dc = DEVICE_GET_CLASS(dev);
- int rc;
+ Error *local_err = NULL;
- assert(dev->state == DEV_STATE_CREATED);
+ assert(!dev->realized);
- rc = dc->init(dev);
- if (rc < 0) {
+ object_property_set_bool(OBJECT(dev), true, "realized", &local_err);
+ if (local_err != NULL) {
+ error_free(local_err);
qdev_free(dev);
- return rc;
+ return -1;
}
+ return 0;
+}
- if (!OBJECT(dev)->parent) {
- static int unattached_count = 0;
- gchar *name = g_strdup_printf("device[%d]", unattached_count++);
-
- object_property_add_child(container_get(qdev_get_machine(),
- "/unattached"),
- name, OBJECT(dev), NULL);
- g_free(name);
- }
+static void device_realize(DeviceState *dev, Error **err)
+{
+ DeviceClass *dc = DEVICE_GET_CLASS(dev);
- if (qdev_get_vmsd(dev)) {
- vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev,
- dev->instance_id_alias,
- dev->alias_required_for_version);
- }
- dev->state = DEV_STATE_INITIALIZED;
- if (dev->hotplugged) {
- device_reset(dev);
+ if (dc->init) {
+ int rc = dc->init(dev);
+ if (rc < 0) {
+ error_setg(err, "Device initialization failed.");
+ return;
+ }
}
- return 0;
}
void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
int required_for_version)
{
- assert(dev->state == DEV_STATE_CREATED);
+ assert(!dev->realized);
dev->instance_id_alias = alias_id;
dev->alias_required_for_version = required_for_version;
}
qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL);
}
+void qbus_reset_all(BusState *bus)
+{
+ qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL);
+}
+
void qbus_reset_all_fn(void *opaque)
{
BusState *bus = opaque;
- qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL);
+ qbus_reset_all(bus);
}
/* can be used as ->unplug() callback for the simple cases */
/* Unlink device from bus and free the structure. */
void qdev_free(DeviceState *dev)
{
- object_delete(OBJECT(dev));
+ object_unparent(OBJECT(dev));
}
void qdev_machine_creation_done(void)
dev->gpio_out[n] = pin;
}
-void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
-{
- qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
- if (nd->netdev)
- qdev_prop_set_netdev(dev, "netdev", nd->netdev);
- if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
- object_property_find(OBJECT(dev), "vectors", NULL)) {
- qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
- }
- nd->instantiated = 1;
-}
-
BusState *qdev_get_child_bus(DeviceState *dev, const char *name)
{
BusState *bus;
return NULL;
}
-static void qbus_realize(BusState *bus)
+static void qbus_realize(BusState *bus, DeviceState *parent, const char *name)
{
const char *typename = object_get_typename(OBJECT(bus));
char *buf;
int i,len;
- if (bus->name) {
- /* use supplied name */
+ bus->parent = parent;
+
+ if (name) {
+ bus->name = g_strdup(name);
} else if (bus->parent && bus->parent->id) {
/* parent device has id -> use it for bus name */
len = strlen(bus->parent->id) + 16;
QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling);
bus->parent->num_child_bus++;
object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL);
+ object_unref(OBJECT(bus));
} else if (bus != sysbus_get_default()) {
/* TODO: once all bus devices are qdevified,
only reset handler for main_system_bus should be registered here. */
}
}
-void qbus_create_inplace(BusState *bus, const char *typename,
+static void bus_unparent(Object *obj)
+{
+ BusState *bus = BUS(obj);
+ BusChild *kid;
+
+ while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) {
+ DeviceState *dev = kid->child;
+ qdev_free(dev);
+ }
+ if (bus->parent) {
+ QLIST_REMOVE(bus, sibling);
+ bus->parent->num_child_bus--;
+ bus->parent = NULL;
+ } else {
+ assert(bus != sysbus_get_default()); /* main_system_bus is never freed */
+ qemu_unregister_reset(qbus_reset_all_fn, bus);
+ }
+}
+
+void qbus_create_inplace(void *bus, const char *typename,
DeviceState *parent, const char *name)
{
object_initialize(bus, typename);
-
- bus->parent = parent;
- bus->name = name ? g_strdup(name) : NULL;
- qbus_realize(bus);
+ qbus_realize(bus, parent, name);
}
BusState *qbus_create(const char *typename, DeviceState *parent, const char *name)
BusState *bus;
bus = BUS(object_new(typename));
-
- bus->parent = parent;
- bus->name = name ? g_strdup(name) : NULL;
- qbus_realize(bus);
+ qbus_realize(bus, parent, name);
return bus;
}
void qbus_free(BusState *bus)
{
- object_delete(OBJECT(bus));
+ object_unparent(OBJECT(bus));
}
static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev)
char *ptr = NULL;
int ret;
- if (dev->state != DEV_STATE_CREATED) {
+ if (dev->realized) {
error_set(errp, QERR_PERMISSION_DENIED);
return;
}
assert_no_error(local_err);
}
+static bool device_get_realized(Object *obj, Error **err)
+{
+ DeviceState *dev = DEVICE(obj);
+ return dev->realized;
+}
+
+static void device_set_realized(Object *obj, bool value, Error **err)
+{
+ DeviceState *dev = DEVICE(obj);
+ DeviceClass *dc = DEVICE_GET_CLASS(dev);
+ Error *local_err = NULL;
+
+ if (value && !dev->realized) {
+ if (dc->realize) {
+ dc->realize(dev, &local_err);
+ }
+
+ if (!obj->parent && local_err == NULL) {
+ static int unattached_count;
+ gchar *name = g_strdup_printf("device[%d]", unattached_count++);
+
+ object_property_add_child(container_get(qdev_get_machine(),
+ "/unattached"),
+ name, obj, &local_err);
+ g_free(name);
+ }
+
+ if (qdev_get_vmsd(dev) && local_err == NULL) {
+ vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev,
+ dev->instance_id_alias,
+ dev->alias_required_for_version);
+ }
+ if (dev->hotplugged && local_err == NULL) {
+ device_reset(dev);
+ }
+ } else if (!value && dev->realized) {
+ if (dc->unrealize) {
+ dc->unrealize(dev, &local_err);
+ }
+ }
+
+ if (local_err != NULL) {
+ error_propagate(err, local_err);
+ return;
+ }
+
+ dev->realized = value;
+}
+
static void device_initfn(Object *obj)
{
DeviceState *dev = DEVICE(obj);
}
dev->instance_id_alias = -1;
- dev->state = DEV_STATE_CREATED;
+ dev->realized = false;
+
+ object_property_add_bool(obj, "realized",
+ device_get_realized, device_set_realized, NULL);
class = object_get_class(OBJECT(dev));
do {
static void device_finalize(Object *obj)
{
DeviceState *dev = DEVICE(obj);
- BusState *bus;
- DeviceClass *dc = DEVICE_GET_CLASS(dev);
-
- if (dev->state == DEV_STATE_INITIALIZED) {
- while (dev->num_child_bus) {
- bus = QLIST_FIRST(&dev->child_bus);
- qbus_free(bus);
- }
- if (qdev_get_vmsd(dev)) {
- vmstate_unregister(dev, qdev_get_vmsd(dev), dev);
- }
- if (dc->exit) {
- dc->exit(dev);
- }
- if (dev->opts) {
- qemu_opts_del(dev->opts);
- }
+ if (dev->opts) {
+ qemu_opts_del(dev->opts);
}
}
klass->props = NULL;
}
-static void qdev_remove_from_bus(Object *obj)
+static void device_unparent(Object *obj)
{
DeviceState *dev = DEVICE(obj);
+ DeviceClass *dc = DEVICE_GET_CLASS(dev);
+ BusState *bus;
- bus_remove_child(dev->parent_bus, dev);
+ while (dev->num_child_bus) {
+ bus = QLIST_FIRST(&dev->child_bus);
+ qbus_free(bus);
+ }
+ if (dev->realized) {
+ if (qdev_get_vmsd(dev)) {
+ vmstate_unregister(dev, qdev_get_vmsd(dev), dev);
+ }
+ if (dc->exit) {
+ dc->exit(dev);
+ }
+ }
+ if (dev->parent_bus) {
+ bus_remove_child(dev->parent_bus, dev);
+ object_unref(OBJECT(dev->parent_bus));
+ dev->parent_bus = NULL;
+ }
}
static void device_class_init(ObjectClass *class, void *data)
{
- class->unparent = qdev_remove_from_bus;
+ DeviceClass *dc = DEVICE_CLASS(class);
+
+ class->unparent = device_unparent;
+ dc->realize = device_realize;
}
void device_reset(DeviceState *dev)
return dev;
}
-static TypeInfo device_type_info = {
+static const TypeInfo device_type_info = {
.name = TYPE_DEVICE,
.parent = TYPE_OBJECT,
.instance_size = sizeof(DeviceState),
QTAILQ_INIT(&bus->children);
}
+static void bus_class_init(ObjectClass *class, void *data)
+{
+ class->unparent = bus_unparent;
+}
+
static void qbus_finalize(Object *obj)
{
BusState *bus = BUS(obj);
- BusChild *kid;
- while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) {
- DeviceState *dev = kid->child;
- qdev_free(dev);
- }
- if (bus->parent) {
- QLIST_REMOVE(bus, sibling);
- bus->parent->num_child_bus--;
- } else {
- assert(bus != sysbus_get_default()); /* main_system_bus is never freed */
- qemu_unregister_reset(qbus_reset_all_fn, bus);
- }
g_free((char *)bus->name);
}
.class_size = sizeof(BusClass),
.instance_init = qbus_initfn,
.instance_finalize = qbus_finalize,
+ .class_init = bus_class_init,
};
static void qdev_register_types(void)
projects / qemu.git / blobdiff