xref: /openbmc/qemu/qapi/qdev.json (revision 4550c661)
1# -*- Mode: Python -*-
2# vim: filetype=python
3#
4# This work is licensed under the terms of the GNU GPL, version 2 or later.
5# See the COPYING file in the top-level directory.
6
7##
8# = Device infrastructure (qdev)
9##
10
11{ 'include': 'qom.json' }
12
13##
14# @device-list-properties:
15#
16# List properties associated with a device.
17#
18# @typename: the type name of a device
19#
20# Returns: a list of ObjectPropertyInfo describing a devices properties
21#
22# Note: objects can create properties at runtime, for example to describe
23#       links between different devices and/or objects. These properties
24#       are not included in the output of this command.
25#
26# Since: 1.2
27##
28{ 'command': 'device-list-properties',
29  'data': { 'typename': 'str'},
30  'returns': [ 'ObjectPropertyInfo' ] }
31
32##
33# @device_add:
34#
35# Add a device.
36#
37# @driver: the name of the new device's driver
38#
39# @bus: the device's parent bus (device tree path)
40#
41# @id: the device's ID, must be unique
42#
43# Features:
44# @json-cli: If present, the "-device" command line option supports JSON
45#            syntax with a structure identical to the arguments of this
46#            command.
47# @json-cli-hotplug: If present, the "-device" command line option supports JSON
48#                    syntax without the reference counting leak that broke
49#                    hot-unplug
50#
51# Notes:
52#
53# Additional arguments depend on the type.
54#
55# 1. For detailed information about this command, please refer to the
56#    'docs/qdev-device-use.txt' file.
57#
58# 2. It's possible to list device properties by running QEMU with the
59#    "-device DEVICE,help" command-line argument, where DEVICE is the
60#    device's name
61#
62# Example:
63#
64# -> { "execute": "device_add",
65#      "arguments": { "driver": "e1000", "id": "net1",
66#                     "bus": "pci.0",
67#                     "mac": "52:54:00:12:34:56" } }
68# <- { "return": {} }
69#
70# TODO: This command effectively bypasses QAPI completely due to its
71#       "additional arguments" business.  It shouldn't have been added to
72#       the schema in this form.  It should be qapified properly, or
73#       replaced by a properly qapified command.
74#
75# Since: 0.13
76##
77{ 'command': 'device_add',
78  'data': {'driver': 'str', '*bus': 'str', '*id': 'str'},
79  'gen': false, # so we can get the additional arguments
80  'features': ['json-cli', 'json-cli-hotplug'] }
81
82##
83# @device_del:
84#
85# Remove a device from a guest
86#
87# @id: the device's ID or QOM path
88#
89# Returns: Nothing on success
90#          If @id is not a valid device, DeviceNotFound
91#
92# Notes: When this command completes, the device may not be removed from the
93#        guest.  Hot removal is an operation that requires guest cooperation.
94#        This command merely requests that the guest begin the hot removal
95#        process.  Completion of the device removal process is signaled with a
96#        DEVICE_DELETED event. Guest reset will automatically complete removal
97#        for all devices.  If a guest-side error in the hot removal process is
98#        detected, the device will not be removed and a DEVICE_UNPLUG_GUEST_ERROR
99#        event is sent.  Some errors cannot be detected.
100#
101# Since: 0.14
102#
103# Example:
104#
105# -> { "execute": "device_del",
106#      "arguments": { "id": "net1" } }
107# <- { "return": {} }
108#
109# -> { "execute": "device_del",
110#      "arguments": { "id": "/machine/peripheral-anon/device[0]" } }
111# <- { "return": {} }
112#
113##
114{ 'command': 'device_del', 'data': {'id': 'str'} }
115
116##
117# @DEVICE_DELETED:
118#
119# Emitted whenever the device removal completion is acknowledged by the guest.
120# At this point, it's safe to reuse the specified device ID. Device removal can
121# be initiated by the guest or by HMP/QMP commands.
122#
123# @device: the device's ID if it has one
124#
125# @path: the device's QOM path
126#
127# Since: 1.5
128#
129# Example:
130#
131# <- { "event": "DEVICE_DELETED",
132#      "data": { "device": "virtio-net-pci-0",
133#                "path": "/machine/peripheral/virtio-net-pci-0" },
134#      "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
135#
136##
137{ 'event': 'DEVICE_DELETED',
138  'data': { '*device': 'str', 'path': 'str' } }
139
140##
141# @DEVICE_UNPLUG_GUEST_ERROR:
142#
143# Emitted when a device hot unplug fails due to a guest reported error.
144#
145# @device: the device's ID if it has one
146#
147# @path: the device's QOM path
148#
149# Since: 6.2
150#
151# Example:
152#
153# <- { "event": "DEVICE_UNPLUG_GUEST_ERROR"
154#      "data": { "device": "core1",
155#                "path": "/machine/peripheral/core1" },
156#      },
157#      "timestamp": { "seconds": 1615570772, "microseconds": 202844 } }
158#
159##
160{ 'event': 'DEVICE_UNPLUG_GUEST_ERROR',
161  'data': { '*device': 'str', 'path': 'str' } }
162