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Add virtio-sound device stub
Add a new VIRTIO device for the virtio sound device id. Functionality
will be added in the following commits.
Based-on: 5a2f350eec
Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <f9678a41fe97b5886c1b04795f1be046509de866.1698062525.git.manos.pitsidianakis@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Manos Pitsidianakis
Michael S. Tsirkin
parent
bca3e2a138
commit
2880e676c0
7 changed files with 335 additions and 0 deletions
233
hw/audio/virtio-snd.c
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233
hw/audio/virtio-snd.c
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/*
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* VIRTIO Sound Device conforming to
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*
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* "Virtual I/O Device (VIRTIO) Version 1.2
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* Committee Specification Draft 01
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* 09 May 2022"
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*
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* <https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html#x1-52900014>
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*
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* Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
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* Copyright (C) 2019 OpenSynergy GmbH
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version. See the COPYING file in the
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* top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/iov.h"
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#include "qemu/log.h"
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#include "qemu/error-report.h"
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#include "include/qemu/lockable.h"
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#include "sysemu/runstate.h"
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#include "trace.h"
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#include "qapi/error.h"
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#include "hw/audio/virtio-snd.h"
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#include "hw/core/cpu.h"
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#define VIRTIO_SOUND_VM_VERSION 1
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#define VIRTIO_SOUND_JACK_DEFAULT 0
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#define VIRTIO_SOUND_STREAM_DEFAULT 1
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#define VIRTIO_SOUND_CHMAP_DEFAULT 0
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#define VIRTIO_SOUND_HDA_FN_NID 0
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static const VMStateDescription vmstate_virtio_snd_device = {
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.name = TYPE_VIRTIO_SND,
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.version_id = VIRTIO_SOUND_VM_VERSION,
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.minimum_version_id = VIRTIO_SOUND_VM_VERSION,
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};
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static const VMStateDescription vmstate_virtio_snd = {
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.name = TYPE_VIRTIO_SND,
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.minimum_version_id = VIRTIO_SOUND_VM_VERSION,
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.version_id = VIRTIO_SOUND_VM_VERSION,
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.fields = (VMStateField[]) {
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VMSTATE_VIRTIO_DEVICE,
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VMSTATE_END_OF_LIST()
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},
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};
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static Property virtio_snd_properties[] = {
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DEFINE_AUDIO_PROPERTIES(VirtIOSound, card),
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DEFINE_PROP_UINT32("jacks", VirtIOSound, snd_conf.jacks,
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VIRTIO_SOUND_JACK_DEFAULT),
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DEFINE_PROP_UINT32("streams", VirtIOSound, snd_conf.streams,
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VIRTIO_SOUND_STREAM_DEFAULT),
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DEFINE_PROP_UINT32("chmaps", VirtIOSound, snd_conf.chmaps,
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VIRTIO_SOUND_CHMAP_DEFAULT),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void
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virtio_snd_get_config(VirtIODevice *vdev, uint8_t *config)
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{
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VirtIOSound *s = VIRTIO_SND(vdev);
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virtio_snd_config *sndconfig =
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(virtio_snd_config *)config;
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trace_virtio_snd_get_config(vdev,
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s->snd_conf.jacks,
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s->snd_conf.streams,
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s->snd_conf.chmaps);
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memcpy(sndconfig, &s->snd_conf, sizeof(s->snd_conf));
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cpu_to_le32s(&sndconfig->jacks);
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cpu_to_le32s(&sndconfig->streams);
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cpu_to_le32s(&sndconfig->chmaps);
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}
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static void
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virtio_snd_set_config(VirtIODevice *vdev, const uint8_t *config)
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{
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VirtIOSound *s = VIRTIO_SND(vdev);
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const virtio_snd_config *sndconfig =
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(const virtio_snd_config *)config;
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trace_virtio_snd_set_config(vdev,
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s->snd_conf.jacks,
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sndconfig->jacks,
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s->snd_conf.streams,
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sndconfig->streams,
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s->snd_conf.chmaps,
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sndconfig->chmaps);
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memcpy(&s->snd_conf, sndconfig, sizeof(virtio_snd_config));
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le32_to_cpus(&s->snd_conf.jacks);
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le32_to_cpus(&s->snd_conf.streams);
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le32_to_cpus(&s->snd_conf.chmaps);
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}
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/*
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* Queue handler stub.
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*
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* @vdev: VirtIOSound device
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* @vq: virtqueue
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*/
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static void virtio_snd_handle_queue(VirtIODevice *vdev, VirtQueue *vq) {}
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static uint64_t get_features(VirtIODevice *vdev, uint64_t features,
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Error **errp)
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{
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/*
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* virtio-v1.2-csd01, 5.14.3,
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* Feature Bits
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* None currently defined.
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*/
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VirtIOSound *s = VIRTIO_SND(vdev);
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features |= s->features;
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trace_virtio_snd_get_features(vdev, features);
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return features;
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}
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static void
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virtio_snd_vm_state_change(void *opaque, bool running,
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RunState state)
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{
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if (running) {
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trace_virtio_snd_vm_state_running();
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} else {
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trace_virtio_snd_vm_state_stopped();
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}
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}
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static void virtio_snd_realize(DeviceState *dev, Error **errp)
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{
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ERRP_GUARD();
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VirtIOSound *vsnd = VIRTIO_SND(dev);
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VirtIODevice *vdev = VIRTIO_DEVICE(dev);
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vsnd->vmstate =
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qemu_add_vm_change_state_handler(virtio_snd_vm_state_change, vsnd);
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trace_virtio_snd_realize(vsnd);
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virtio_init(vdev, VIRTIO_ID_SOUND, sizeof(virtio_snd_config));
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virtio_add_feature(&vsnd->features, VIRTIO_F_VERSION_1);
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/* set number of jacks and streams */
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if (vsnd->snd_conf.jacks > 8) {
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error_setg(errp,
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"Invalid number of jacks: %"PRIu32,
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vsnd->snd_conf.jacks);
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return;
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}
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if (vsnd->snd_conf.streams < 1 || vsnd->snd_conf.streams > 10) {
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error_setg(errp,
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"Invalid number of streams: %"PRIu32,
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vsnd->snd_conf.streams);
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return;
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}
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if (vsnd->snd_conf.chmaps > VIRTIO_SND_CHMAP_MAX_SIZE) {
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error_setg(errp,
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"Invalid number of channel maps: %"PRIu32,
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vsnd->snd_conf.chmaps);
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return;
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}
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AUD_register_card("virtio-sound", &vsnd->card, errp);
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vsnd->queues[VIRTIO_SND_VQ_CONTROL] =
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virtio_add_queue(vdev, 64, virtio_snd_handle_queue);
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vsnd->queues[VIRTIO_SND_VQ_EVENT] =
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virtio_add_queue(vdev, 64, virtio_snd_handle_queue);
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vsnd->queues[VIRTIO_SND_VQ_TX] =
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virtio_add_queue(vdev, 64, virtio_snd_handle_queue);
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vsnd->queues[VIRTIO_SND_VQ_RX] =
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virtio_add_queue(vdev, 64, virtio_snd_handle_queue);
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}
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static void virtio_snd_unrealize(DeviceState *dev)
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{
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VirtIODevice *vdev = VIRTIO_DEVICE(dev);
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VirtIOSound *vsnd = VIRTIO_SND(dev);
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qemu_del_vm_change_state_handler(vsnd->vmstate);
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trace_virtio_snd_unrealize(vsnd);
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AUD_remove_card(&vsnd->card);
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virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_CONTROL]);
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virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_EVENT]);
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virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_TX]);
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virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_RX]);
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virtio_cleanup(vdev);
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}
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static void virtio_snd_reset(VirtIODevice *vdev) {}
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static void virtio_snd_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
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set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
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device_class_set_props(dc, virtio_snd_properties);
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dc->vmsd = &vmstate_virtio_snd;
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vdc->vmsd = &vmstate_virtio_snd_device;
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vdc->realize = virtio_snd_realize;
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vdc->unrealize = virtio_snd_unrealize;
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vdc->get_config = virtio_snd_get_config;
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vdc->set_config = virtio_snd_set_config;
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vdc->get_features = get_features;
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vdc->reset = virtio_snd_reset;
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vdc->legacy_features = 0;
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}
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static const TypeInfo virtio_snd_types[] = {
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{
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.name = TYPE_VIRTIO_SND,
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.parent = TYPE_VIRTIO_DEVICE,
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.instance_size = sizeof(VirtIOSound),
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.class_init = virtio_snd_class_init,
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}
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};
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DEFINE_TYPES(virtio_snd_types)
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