target/arm: NS BusFault on vector table fetch escalates to NS HardFault
[qemu/ar7.git] / hw / input / vhost-user-input.c
blob6da497b1a8a94ef4a531470943d1049e9cbe6927
1 /*
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
4 * top-level directory.
5 */
7 #include "qemu/osdep.h"
8 #include "qemu/error-report.h"
9 #include "qapi/error.h"
10 #include "qemu-common.h"
12 #include "hw/qdev.h"
13 #include "hw/virtio/virtio-input.h"
15 static int vhost_input_config_change(struct vhost_dev *dev)
17 error_report("vhost-user-input: unhandled backend config change");
18 return -1;
21 static const VhostDevConfigOps config_ops = {
22 .vhost_dev_config_notifier = vhost_input_config_change,
25 static void vhost_input_realize(DeviceState *dev, Error **errp)
27 VHostUserInput *vhi = VHOST_USER_INPUT(dev);
28 VirtIOInput *vinput = VIRTIO_INPUT(dev);
29 VirtIODevice *vdev = VIRTIO_DEVICE(dev);
31 vhost_dev_set_config_notifier(&vhi->vhost->dev, &config_ops);
32 vinput->cfg_size = sizeof_field(virtio_input_config, u);
33 if (vhost_user_backend_dev_init(vhi->vhost, vdev, 2, errp) == -1) {
34 return;
38 static void vhost_input_change_active(VirtIOInput *vinput)
40 VHostUserInput *vhi = VHOST_USER_INPUT(vinput);
42 if (vinput->active) {
43 vhost_user_backend_start(vhi->vhost);
44 } else {
45 vhost_user_backend_stop(vhi->vhost);
49 static void vhost_input_get_config(VirtIODevice *vdev, uint8_t *config_data)
51 VirtIOInput *vinput = VIRTIO_INPUT(vdev);
52 VHostUserInput *vhi = VHOST_USER_INPUT(vdev);
53 int ret;
55 memset(config_data, 0, vinput->cfg_size);
57 ret = vhost_dev_get_config(&vhi->vhost->dev, config_data, vinput->cfg_size);
58 if (ret) {
59 error_report("vhost-user-input: get device config space failed");
60 return;
64 static void vhost_input_set_config(VirtIODevice *vdev,
65 const uint8_t *config_data)
67 VHostUserInput *vhi = VHOST_USER_INPUT(vdev);
68 int ret;
70 ret = vhost_dev_set_config(&vhi->vhost->dev, config_data,
71 0, sizeof(virtio_input_config),
72 VHOST_SET_CONFIG_TYPE_MASTER);
73 if (ret) {
74 error_report("vhost-user-input: set device config space failed");
75 return;
78 virtio_notify_config(vdev);
81 static const VMStateDescription vmstate_vhost_input = {
82 .name = "vhost-user-input",
83 .unmigratable = 1,
86 static void vhost_input_class_init(ObjectClass *klass, void *data)
88 VirtIOInputClass *vic = VIRTIO_INPUT_CLASS(klass);
89 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
90 DeviceClass *dc = DEVICE_CLASS(klass);
92 dc->vmsd = &vmstate_vhost_input;
93 vdc->get_config = vhost_input_get_config;
94 vdc->set_config = vhost_input_set_config;
95 vic->realize = vhost_input_realize;
96 vic->change_active = vhost_input_change_active;
99 static void vhost_input_init(Object *obj)
101 VHostUserInput *vhi = VHOST_USER_INPUT(obj);
103 vhi->vhost = VHOST_USER_BACKEND(object_new(TYPE_VHOST_USER_BACKEND));
104 object_property_add_alias(obj, "chardev",
105 OBJECT(vhi->vhost), "chardev", &error_abort);
108 static void vhost_input_finalize(Object *obj)
110 VHostUserInput *vhi = VHOST_USER_INPUT(obj);
112 object_unref(OBJECT(vhi->vhost));
115 static const TypeInfo vhost_input_info = {
116 .name = TYPE_VHOST_USER_INPUT,
117 .parent = TYPE_VIRTIO_INPUT,
118 .instance_size = sizeof(VHostUserInput),
119 .instance_init = vhost_input_init,
120 .instance_finalize = vhost_input_finalize,
121 .class_init = vhost_input_class_init,
124 static void vhost_input_register_types(void)
126 type_register_static(&vhost_input_info);
129 type_init(vhost_input_register_types)