1 files changed, 92 insertions, 0 deletions
diff --git a/qemu/include/hw/hotplug.h b/qemu/include/hw/hotplug.h
new file mode 100644
index 000000000..2db025d0b
--- /dev/null
+++ b/qemu/include/hw/hotplug.h
@@ -0,0 +1,92 @@
+/*
+ * 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_request: unplug request callback.
+ *                  Used as a means to initiate device unplug for devices that
+ *                  require asynchronous unplug handling.
+ * @unplug: unplug callback.
+ *          Used for device removal with devices that implement
+ *          asynchronous and synchronous (surprise) removal.
+ */
+typedef struct HotplugHandlerClass {
+    /* <private> */
+    InterfaceClass parent;
+
+    /* <public> */
+    hotplug_fn plug;
+    hotplug_fn unplug_request;
+    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_request:
+ *
+ * Calls #HotplugHandlerClass.unplug_request callback of @plug_handler.
+ */
+void hotplug_handler_unplug_request(HotplugHandler *plug_handler,
+                                    DeviceState *plugged_dev,
+                                    Error **errp);
+/**
+ * hotplug_handler_unplug:
+ *
+ * Calls #HotplugHandlerClass.unplug callback of @plug_handler.
+ */
+void hotplug_handler_unplug(HotplugHandler *plug_handler,
+                            DeviceState *plugged_dev,
+                            Error **errp);
+#endif