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/*
* Vhost-user snd virtio device
*
* Copyright (c) 2023 Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
*
* Simple wrapper of the generic vhost-user-device.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/qdev-properties.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/virtio/vhost-user-snd.h"
#include "standard-headers/linux/virtio_ids.h"
#include "standard-headers/linux/virtio_snd.h"
static const VirtIOFeature feature_sizes[] = {
{.flags = 1ULL << VIRTIO_SND_F_CTLS,
.end = endof(struct virtio_snd_config, controls)},
{}
};
static const VirtIOConfigSizeParams cfg_size_params = {
.min_size = endof(struct virtio_snd_config, chmaps),
.max_size = sizeof(struct virtio_snd_config),
.feature_sizes = feature_sizes
};
static const VMStateDescription vu_snd_vmstate = {
.name = "vhost-user-snd",
.unmigratable = 1,
};
static const Property vsnd_properties[] = {
DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
DEFINE_PROP_BIT64("controls", VHostUserBase,
parent_obj.host_features, VIRTIO_SND_F_CTLS, false),
};
static void vu_snd_base_realize(DeviceState *dev, Error **errp)
{
VHostUserBase *vub = VHOST_USER_BASE(dev);
VHostUserBaseClass *vubs = VHOST_USER_BASE_GET_CLASS(dev);
VirtIODevice *vdev = &vub->parent_obj;
vub->virtio_id = VIRTIO_ID_SOUND;
vub->num_vqs = 4;
vub->config_size = virtio_get_config_size(&cfg_size_params,
vdev->host_features);
vub->vq_size = 64;
vubs->parent_realize(dev, errp);
}
static void vu_snd_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
dc->vmsd = &vu_snd_vmstate;
device_class_set_props(dc, vsnd_properties);
device_class_set_parent_realize(dc, vu_snd_base_realize,
&vubc->parent_realize);
set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
}
static const TypeInfo vu_snd_info = {
.name = TYPE_VHOST_USER_SND,
.parent = TYPE_VHOST_USER_BASE,
.instance_size = sizeof(VHostUserSound),
.class_init = vu_snd_class_init,
};
static void vu_snd_register_types(void)
{
type_register_static(&vu_snd_info);
}
type_init(vu_snd_register_types)
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