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https://gitlab.com/qemu-project/qemu
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4ae0fc18a1
Tested with rust-vmm vhost-user-sound daemon:
RUST_LOG=trace cargo run --bin vhost-user-sound -- --socket /tmp/snd.sock --backend null
Invocation:
qemu-system-x86_64 \
-qmp unix:./qmp-sock,server,wait=off \
-m 4096 \
-numa node,memdev=mem \
-object memory-backend-file,id=mem,size=4G,mem-path=/dev/shm,share=on \
-D qemu.log \
-d guest_errors,trace:\*snd\*,trace:\*sound\*,trace:\*vhost\* \
-chardev socket,id=vsnd,path=/tmp/snd.sock \
-device vhost-user-snd-pci,chardev=vsnd,id=snd \
/path/to/disk
[AJB: imported from 54ae1cdd15.patch]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20240104210945.1223134-7-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
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* Vhost-user snd virtio device
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*
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* Copyright (c) 2023 Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
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*
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* Simple wrapper of the generic vhost-user-device.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/qdev-properties.h"
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#include "hw/virtio/virtio-bus.h"
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#include "hw/virtio/vhost-user-snd.h"
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#include "standard-headers/linux/virtio_ids.h"
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#include "standard-headers/linux/virtio_snd.h"
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static const VMStateDescription vu_snd_vmstate = {
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.name = "vhost-user-snd",
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.unmigratable = 1,
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};
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static Property vsnd_properties[] = {
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DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void vu_snd_base_realize(DeviceState *dev, Error **errp)
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{
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VHostUserBase *vub = VHOST_USER_BASE(dev);
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VHostUserBaseClass *vubs = VHOST_USER_BASE_GET_CLASS(dev);
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vub->virtio_id = VIRTIO_ID_SOUND;
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vub->num_vqs = 4;
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vub->config_size = sizeof(struct virtio_snd_config);
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vub->vq_size = 64;
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vubs->parent_realize(dev, errp);
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}
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static void vu_snd_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
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dc->vmsd = &vu_snd_vmstate;
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device_class_set_props(dc, vsnd_properties);
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device_class_set_parent_realize(dc, vu_snd_base_realize,
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&vubc->parent_realize);
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set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
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}
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static const TypeInfo vu_snd_info = {
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.name = TYPE_VHOST_USER_SND,
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.parent = TYPE_VHOST_USER_BASE,
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.instance_size = sizeof(VHostUserSound),
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.class_init = vu_snd_class_init,
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};
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static void vu_snd_register_types(void)
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{
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type_register_static(&vu_snd_info);
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}
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type_init(vu_snd_register_types)
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