1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
* 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"
#define TYPE_HOTPLUG_HANDLER "hotplug-handler"
typedef struct HotplugHandlerClass HotplugHandlerClass;
DECLARE_CLASS_CHECKERS(HotplugHandlerClass, HOTPLUG_HANDLER,
TYPE_HOTPLUG_HANDLER)
#define HOTPLUG_HANDLER(obj) \
INTERFACE_CHECK(HotplugHandler, (obj), TYPE_HOTPLUG_HANDLER)
typedef struct HotplugHandler 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.
* @pre_plug: pre plug callback called at start of device.realize(true)
* @plug: plug callback called at end of device.realize(true).
* @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.
* @is_hotpluggable_bus: called to check if bus/its parent allow hotplug on bus
*/
struct HotplugHandlerClass {
/* <private> */
InterfaceClass parent;
/* <public> */
hotplug_fn pre_plug;
hotplug_fn plug;
hotplug_fn unplug_request;
hotplug_fn unplug;
bool (*is_hotpluggable_bus)(HotplugHandler *plug_handler, BusState *bus);
};
/**
* hotplug_handler_plug:
*
* Call #HotplugHandlerClass.plug callback of @plug_handler.
*/
void hotplug_handler_plug(HotplugHandler *plug_handler,
DeviceState *plugged_dev,
Error **errp);
/**
* hotplug_handler_pre_plug:
*
* Call #HotplugHandlerClass.pre_plug callback of @plug_handler.
*/
void hotplug_handler_pre_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
|
