Commit 9f117d41 authored by Igor Mammedov's avatar Igor Mammedov Committed by Michael S. Tsirkin

define hotplug interface

Provide a generic hotplug interface for hotplug handlers.
Intended for replacing hotplug mechanism used by
PCI/PCIE/SHPC code and will be used for memory hotplug.
Signed-off-by: 's avatarIgor Mammedov <imammedo@redhat.com>
Reviewed-by: 's avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: 's avatarMichael S. Tsirkin <mst@redhat.com>
parent a1483f88
......@@ -2,6 +2,7 @@
common-obj-y += qdev.o qdev-properties.o
# irq.o needed for qdev GPIO handling:
common-obj-y += irq.o
common-obj-y += hotplug.o
common-obj-$(CONFIG_EMPTY_SLOT) += empty_slot.o
common-obj-$(CONFIG_XILINX_AXI) += stream.o
......
/*
* Hotplug handler interface.
*
* Copyright (c) 2014 Red Hat Inc.
*
* Authors:
* Igor Mammedov <imammedo@redhat.com>,
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "hw/hotplug.h"
#include "qemu/module.h"
void hotplug_handler_plug(HotplugHandler *plug_handler,
DeviceState *plugged_dev,
Error **errp)
{
HotplugHandlerClass *hdc = HOTPLUG_HANDLER_GET_CLASS(plug_handler);
if (hdc->plug) {
hdc->plug(plug_handler, plugged_dev, errp);
}
}
void hotplug_handler_unplug(HotplugHandler *plug_handler,
DeviceState *plugged_dev,
Error **errp)
{
HotplugHandlerClass *hdc = HOTPLUG_HANDLER_GET_CLASS(plug_handler);
if (hdc->unplug) {
hdc->unplug(plug_handler, plugged_dev, errp);
}
}
static const TypeInfo hotplug_handler_info = {
.name = TYPE_HOTPLUG_HANDLER,
.parent = TYPE_INTERFACE,
.class_size = sizeof(HotplugHandlerClass),
};
static void hotplug_handler_register_types(void)
{
type_register_static(&hotplug_handler_info);
}
type_init(hotplug_handler_register_types)
/*
* Hotplug handler interface.
*
* Copyright (c) 2014 Red Hat Inc.
*
* Authors:
* Igor Mammedov <imammedo@redhat.com>,
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef HOTPLUG_H
#define HOTPLUG_H
#include "qom/object.h"
#include "qemu/typedefs.h"
#define TYPE_HOTPLUG_HANDLER "hotplug-handler"
#define HOTPLUG_HANDLER_CLASS(klass) \
OBJECT_CLASS_CHECK(HotplugHandlerClass, (klass), TYPE_HOTPLUG_HANDLER)
#define HOTPLUG_HANDLER_GET_CLASS(obj) \
OBJECT_GET_CLASS(HotplugHandlerClass, (obj), TYPE_HOTPLUG_HANDLER)
#define HOTPLUG_HANDLER(obj) \
INTERFACE_CHECK(HotplugHandler, (obj), TYPE_HOTPLUG_HANDLER)
typedef struct HotplugHandler {
/* <private> */
Object Parent;
} HotplugHandler;
/**
* hotplug_fn:
* @plug_handler: a device performing plug/uplug action
* @plugged_dev: a device that has been (un)plugged
* @errp: returns an error if this function fails
*/
typedef void (*hotplug_fn)(HotplugHandler *plug_handler,
DeviceState *plugged_dev, Error **errp);
/**
* HotplugDeviceClass:
*
* Interface to be implemented by a device performing
* hardware (un)plug functions.
*
* @parent: Opaque parent interface.
* @plug: plug callback.
* @unplug: unplug callback.
*/
typedef struct HotplugHandlerClass {
/* <private> */
InterfaceClass parent;
/* <public> */
hotplug_fn plug;
hotplug_fn unplug;
} HotplugHandlerClass;
/**
* hotplug_handler_plug:
*
* Call #HotplugHandlerClass.plug callback of @plug_handler.
*/
void hotplug_handler_plug(HotplugHandler *plug_handler,
DeviceState *plugged_dev,
Error **errp);
/**
* hotplug_handler_unplug:
*
* Call #HotplugHandlerClass.unplug callback of @plug_handler.
*/
void hotplug_handler_unplug(HotplugHandler *plug_handler,
DeviceState *plugged_dev,
Error **errp);
#endif
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