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qdev: hotplug for bus-less devices

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Add get_hotplug_handler() method to machine, and
make bus-less device use it during hotplug
as a means to discover a hotplug handler controller.
The returned controller is used to perform hotplug
actions.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-06-02 15:25:03 +02:00 committed by Michael S. Tsirkin
parent c270fb9eff
commit b745454811
2 changed files with 21 additions and 0 deletions
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13
hw/core/qdev.c
View File

@ -34,6 +34,7 @@
#include "qapi/qmp/qjson.h"
#include "monitor/monitor.h"
#include "hw/hotplug.h"
#include "hw/boards.h"
int qdev_hotplug = 0;
static bool qdev_hot_added = false;
@ -813,6 +814,18 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
local_err == NULL) {
hotplug_handler_plug(dev->parent_bus->hotplug_handler,
dev, &local_err);
} else if (local_err == NULL &&
object_dynamic_cast(qdev_get_machine(), TYPE_MACHINE)) {
HotplugHandler *hotplug_ctrl;
MachineState *machine = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(machine);
if (mc->get_hotplug_handler) {
hotplug_ctrl = mc->get_hotplug_handler(machine, dev);
if (hotplug_ctrl) {
hotplug_handler_plug(hotplug_ctrl, dev, &local_err);
}
}
}
if (qdev_get_vmsd(dev) && local_err == NULL) {

8
include/hw/boards.h
View File

@ -61,6 +61,11 @@ extern MachineState *current_machine;
/**
* MachineClass:
* @qemu_machine: #QEMUMachine
* @get_hotplug_handler: this function is called during bus-less
* device hotplug. If defined it returns pointer to an instance
* of HotplugHandler object, which handles hotplug operation
* for a given @dev. It may return NULL if @dev doesn't require
* any actions to be performed by hotplug handler.
*/
struct MachineClass {
/*< private >*/
@ -90,6 +95,9 @@ struct MachineClass {
const char *default_boot_order;
GlobalProperty *compat_props;
const char *hw_version;
HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
DeviceState *dev);
};
/**