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qdev: Prepare realize/unrealize hooks for BusState 

Add a "realized" property calling realize/unrealize hooks as for devices.

Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Bandan Das 2013-11-25 17:48:40 -05:00 committed by Andreas Färber
parent 04e9a20b49
commit 02e7f85dac
2 changed files with 47 additions and 0 deletions
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41
hw/core/qdev.c
View File

@ -501,6 +501,45 @@ static void bus_unparent(Object *obj)
} }
} }
static bool bus_get_realized(Object *obj, Error **err)
{
BusState *bus = BUS(obj);
return bus->realized;
}
static void bus_set_realized(Object *obj, bool value, Error **err)
{
BusState *bus = BUS(obj);
BusClass *bc = BUS_GET_CLASS(bus);
Error *local_err = NULL;
if (value && !bus->realized) {
if (bc->realize) {
bc->realize(bus, &local_err);
if (local_err != NULL) {
goto error;
}
}
} else if (!value && bus->realized) {
if (bc->unrealize) {
bc->unrealize(bus, &local_err);
if (local_err != NULL) {
goto error;
}
}
}
bus->realized = value;
return;
error:
error_propagate(err, local_err);
}
void qbus_create_inplace(void *bus, size_t size, const char *typename, void qbus_create_inplace(void *bus, size_t size, const char *typename,
DeviceState *parent, const char *name) DeviceState *parent, const char *name)
{ {
@ -889,6 +928,8 @@ static void qbus_initfn(Object *obj)
object_property_add_link(obj, QDEV_HOTPLUG_HANDLER_PROPERTY, object_property_add_link(obj, QDEV_HOTPLUG_HANDLER_PROPERTY,
TYPE_HOTPLUG_HANDLER, TYPE_HOTPLUG_HANDLER,
(Object **)&bus->hotplug_handler, NULL); (Object **)&bus->hotplug_handler, NULL);
object_property_add_bool(obj, "realized",
bus_get_realized, bus_set_realized, NULL);
} }
static char *default_bus_get_fw_dev_path(DeviceState *dev) static char *default_bus_get_fw_dev_path(DeviceState *dev)

6
include/hw/qdev-core.h
View File

@ -36,6 +36,8 @@ typedef int (*qdev_event)(DeviceState *dev);
typedef void (*qdev_resetfn)(DeviceState *dev); typedef void (*qdev_resetfn)(DeviceState *dev);
typedef void (*DeviceRealize)(DeviceState *dev, Error **errp); typedef void (*DeviceRealize)(DeviceState *dev, Error **errp);
typedef void (*DeviceUnrealize)(DeviceState *dev, Error **errp); typedef void (*DeviceUnrealize)(DeviceState *dev, Error **errp);
typedef void (*BusRealize)(BusState *bus, Error **errp);
typedef void (*BusUnrealize)(BusState *bus, Error **errp);
struct VMStateDescription; struct VMStateDescription;
@ -174,6 +176,9 @@ struct BusClass {
*/ */
char *(*get_fw_dev_path)(DeviceState *dev); char *(*get_fw_dev_path)(DeviceState *dev);
void (*reset)(BusState *bus); void (*reset)(BusState *bus);
BusRealize realize;
BusUnrealize unrealize;
/* maximum devices allowed on the bus, 0: no limit. */ /* maximum devices allowed on the bus, 0: no limit. */
int max_dev; int max_dev;
/* number of automatically allocated bus ids (e.g. ide.0) */ /* number of automatically allocated bus ids (e.g. ide.0) */
@ -199,6 +204,7 @@ struct BusState {
int allow_hotplug; int allow_hotplug;
HotplugHandler *hotplug_handler; HotplugHandler *hotplug_handler;
int max_index; int max_index;
bool realized;
QTAILQ_HEAD(ChildrenHead, BusChild) children; QTAILQ_HEAD(ChildrenHead, BusChild) children;
QLIST_ENTRY(BusState) sibling; QLIST_ENTRY(BusState) sibling;
}; };