1 /*
2 * Vhost-user snd virtio device
3 *
4 * Copyright (c) 2023 Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
5 *
6 * Simple wrapper of the generic vhost-user-device.
7 *
8 * SPDX-License-Identifier: GPL-2.0-or-later
9 */
10
11 #include "qemu/osdep.h"
12 #include "qapi/error.h"
13 #include "hw/qdev-properties.h"
14 #include "hw/virtio/virtio-bus.h"
15 #include "hw/virtio/vhost-user-snd.h"
16 #include "standard-headers/linux/virtio_ids.h"
17 #include "standard-headers/linux/virtio_snd.h"
18
19 static const VMStateDescription vu_snd_vmstate = {
20 .name = "vhost-user-snd",
21 .unmigratable = 1,
22 };
23
24 static Property vsnd_properties[] = {
25 DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
26 DEFINE_PROP_END_OF_LIST(),
27 };
28
vu_snd_base_realize(DeviceState * dev,Error ** errp)29 static void vu_snd_base_realize(DeviceState *dev, Error **errp)
30 {
31 VHostUserBase *vub = VHOST_USER_BASE(dev);
32 VHostUserBaseClass *vubs = VHOST_USER_BASE_GET_CLASS(dev);
33
34 vub->virtio_id = VIRTIO_ID_SOUND;
35 vub->num_vqs = 4;
36 vub->config_size = sizeof(struct virtio_snd_config);
37 vub->vq_size = 64;
38
39 vubs->parent_realize(dev, errp);
40 }
41
vu_snd_class_init(ObjectClass * klass,void * data)42 static void vu_snd_class_init(ObjectClass *klass, void *data)
43 {
44 DeviceClass *dc = DEVICE_CLASS(klass);
45 VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
46
47 dc->vmsd = &vu_snd_vmstate;
48 device_class_set_props(dc, vsnd_properties);
49 device_class_set_parent_realize(dc, vu_snd_base_realize,
50 &vubc->parent_realize);
51
52 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
53 }
54
55 static const TypeInfo vu_snd_info = {
56 .name = TYPE_VHOST_USER_SND,
57 .parent = TYPE_VHOST_USER_BASE,
58 .instance_size = sizeof(VHostUserSound),
59 .class_init = vu_snd_class_init,
60 };
61
vu_snd_register_types(void)62 static void vu_snd_register_types(void)
63 {
64 type_register_static(&vu_snd_info);
65 }
66
67 type_init(vu_snd_register_types)
68