Commit 02e7f85d authored by Bandan Das's avatar Bandan Das Committed by Andreas Färber
Browse files

qdev: Prepare realize/unrealize hooks for BusState 



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

Signed-off-by: default avatarBandan Das <bsd@redhat.com>
Signed-off-by: default avatarAndreas Färber <afaerber@suse.de>
parent 04e9a20b

hw/core/qdev.c

+41 −0
Original line number Diff line number Diff line
@@ -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,

                         DeviceState *parent, const char *name)

{
@@ -889,6 +928,8 @@ static void qbus_initfn(Object *obj) 
    object_property_add_link(obj, QDEV_HOTPLUG_HANDLER_PROPERTY,

                             TYPE_HOTPLUG_HANDLER,

                             (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)

include/hw/qdev-core.h

+6 −0
Original line number Diff line number Diff line
@@ -36,6 +36,8 @@ typedef int (*qdev_event)(DeviceState *dev); 
typedef void (*qdev_resetfn)(DeviceState *dev);

typedef void (*DeviceRealize)(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;
@@ -174,6 +176,9 @@ struct BusClass { 
     */

    char *(*get_fw_dev_path)(DeviceState *dev);

    void (*reset)(BusState *bus);

    BusRealize realize;

    BusUnrealize unrealize;



    /* maximum devices allowed on the bus, 0: no limit. */

    int max_dev;

    /* number of automatically allocated bus ids (e.g. ide.0) */
@@ -199,6 +204,7 @@ struct BusState { 
    int allow_hotplug;

    HotplugHandler *hotplug_handler;

    int max_index;

    bool realized;

    QTAILQ_HEAD(ChildrenHead, BusChild) children;

    QLIST_ENTRY(BusState) sibling;

};