2 * This work is licensed under the terms of the GNU GPL, version 2 or
3 * (at your option) any later version. See the COPYING file in the
7 #include "qemu/osdep.h"
8 #include "qemu/error-report.h"
9 #include "qapi/error.h"
10 #include "qemu-common.h"
12 #include "hw/virtio/virtio-input.h"
14 static int vhost_input_config_change(struct vhost_dev
*dev
)
16 error_report("vhost-user-input: unhandled backend config change");
20 static const VhostDevConfigOps config_ops
= {
21 .vhost_dev_config_notifier
= vhost_input_config_change
,
24 static void vhost_input_realize(DeviceState
*dev
, Error
**errp
)
26 VHostUserInput
*vhi
= VHOST_USER_INPUT(dev
);
27 VirtIOInput
*vinput
= VIRTIO_INPUT(dev
);
28 VirtIODevice
*vdev
= VIRTIO_DEVICE(dev
);
30 vhost_dev_set_config_notifier(&vhi
->vhost
->dev
, &config_ops
);
31 vinput
->cfg_size
= sizeof_field(virtio_input_config
, u
);
32 if (vhost_user_backend_dev_init(vhi
->vhost
, vdev
, 2, errp
) == -1) {
37 static void vhost_input_change_active(VirtIOInput
*vinput
)
39 VHostUserInput
*vhi
= VHOST_USER_INPUT(vinput
);
42 vhost_user_backend_start(vhi
->vhost
);
44 vhost_user_backend_stop(vhi
->vhost
);
48 static void vhost_input_get_config(VirtIODevice
*vdev
, uint8_t *config_data
)
50 VirtIOInput
*vinput
= VIRTIO_INPUT(vdev
);
51 VHostUserInput
*vhi
= VHOST_USER_INPUT(vdev
);
54 memset(config_data
, 0, vinput
->cfg_size
);
56 ret
= vhost_dev_get_config(&vhi
->vhost
->dev
, config_data
, vinput
->cfg_size
);
58 error_report("vhost-user-input: get device config space failed");
63 static void vhost_input_set_config(VirtIODevice
*vdev
,
64 const uint8_t *config_data
)
66 VHostUserInput
*vhi
= VHOST_USER_INPUT(vdev
);
69 ret
= vhost_dev_set_config(&vhi
->vhost
->dev
, config_data
,
70 0, sizeof(virtio_input_config
),
71 VHOST_SET_CONFIG_TYPE_MASTER
);
73 error_report("vhost-user-input: set device config space failed");
77 virtio_notify_config(vdev
);
80 static const VMStateDescription vmstate_vhost_input
= {
81 .name
= "vhost-user-input",
85 static void vhost_input_class_init(ObjectClass
*klass
, void *data
)
87 VirtIOInputClass
*vic
= VIRTIO_INPUT_CLASS(klass
);
88 VirtioDeviceClass
*vdc
= VIRTIO_DEVICE_CLASS(klass
);
89 DeviceClass
*dc
= DEVICE_CLASS(klass
);
91 dc
->vmsd
= &vmstate_vhost_input
;
92 vdc
->get_config
= vhost_input_get_config
;
93 vdc
->set_config
= vhost_input_set_config
;
94 vic
->realize
= vhost_input_realize
;
95 vic
->change_active
= vhost_input_change_active
;
98 static void vhost_input_init(Object
*obj
)
100 VHostUserInput
*vhi
= VHOST_USER_INPUT(obj
);
102 vhi
->vhost
= VHOST_USER_BACKEND(object_new(TYPE_VHOST_USER_BACKEND
));
103 object_property_add_alias(obj
, "chardev",
104 OBJECT(vhi
->vhost
), "chardev");
107 static void vhost_input_finalize(Object
*obj
)
109 VHostUserInput
*vhi
= VHOST_USER_INPUT(obj
);
111 object_unref(OBJECT(vhi
->vhost
));
114 static const TypeInfo vhost_input_info
= {
115 .name
= TYPE_VHOST_USER_INPUT
,
116 .parent
= TYPE_VIRTIO_INPUT
,
117 .instance_size
= sizeof(VHostUserInput
),
118 .instance_init
= vhost_input_init
,
119 .instance_finalize
= vhost_input_finalize
,
120 .class_init
= vhost_input_class_init
,
123 static void vhost_input_register_types(void)
125 type_register_static(&vhost_input_info
);
128 type_init(vhost_input_register_types
)