/* * VIRTIO Sound Device conforming to * * "Virtual I/O Device (VIRTIO) Version 1.2 * Committee Specification Draft 01 * 09 May 2022" * * * * Copyright (c) 2023 Emmanouil Pitsidianakis * Copyright (C) 2019 OpenSynergy GmbH * * This work is licensed under the terms of the GNU GPL, version 2 or * (at your option) any later version. See the COPYING file in the * top-level directory. */ #include "qemu/osdep.h" #include "qemu/iov.h" #include "qemu/log.h" #include "qemu/error-report.h" #include "include/qemu/lockable.h" #include "sysemu/runstate.h" #include "trace.h" #include "qapi/error.h" #include "hw/audio/virtio-snd.h" #include "hw/core/cpu.h" #define VIRTIO_SOUND_VM_VERSION 1 #define VIRTIO_SOUND_JACK_DEFAULT 0 #define VIRTIO_SOUND_STREAM_DEFAULT 1 #define VIRTIO_SOUND_CHMAP_DEFAULT 0 #define VIRTIO_SOUND_HDA_FN_NID 0 static const VMStateDescription vmstate_virtio_snd_device = { .name = TYPE_VIRTIO_SND, .version_id = VIRTIO_SOUND_VM_VERSION, .minimum_version_id = VIRTIO_SOUND_VM_VERSION, }; static const VMStateDescription vmstate_virtio_snd = { .name = TYPE_VIRTIO_SND, .minimum_version_id = VIRTIO_SOUND_VM_VERSION, .version_id = VIRTIO_SOUND_VM_VERSION, .fields = (VMStateField[]) { VMSTATE_VIRTIO_DEVICE, VMSTATE_END_OF_LIST() }, }; static Property virtio_snd_properties[] = { DEFINE_AUDIO_PROPERTIES(VirtIOSound, card), DEFINE_PROP_UINT32("jacks", VirtIOSound, snd_conf.jacks, VIRTIO_SOUND_JACK_DEFAULT), DEFINE_PROP_UINT32("streams", VirtIOSound, snd_conf.streams, VIRTIO_SOUND_STREAM_DEFAULT), DEFINE_PROP_UINT32("chmaps", VirtIOSound, snd_conf.chmaps, VIRTIO_SOUND_CHMAP_DEFAULT), DEFINE_PROP_END_OF_LIST(), }; static void virtio_snd_get_config(VirtIODevice *vdev, uint8_t *config) { VirtIOSound *s = VIRTIO_SND(vdev); virtio_snd_config *sndconfig = (virtio_snd_config *)config; trace_virtio_snd_get_config(vdev, s->snd_conf.jacks, s->snd_conf.streams, s->snd_conf.chmaps); memcpy(sndconfig, &s->snd_conf, sizeof(s->snd_conf)); cpu_to_le32s(&sndconfig->jacks); cpu_to_le32s(&sndconfig->streams); cpu_to_le32s(&sndconfig->chmaps); } static void virtio_snd_set_config(VirtIODevice *vdev, const uint8_t *config) { VirtIOSound *s = VIRTIO_SND(vdev); const virtio_snd_config *sndconfig = (const virtio_snd_config *)config; trace_virtio_snd_set_config(vdev, s->snd_conf.jacks, sndconfig->jacks, s->snd_conf.streams, sndconfig->streams, s->snd_conf.chmaps, sndconfig->chmaps); memcpy(&s->snd_conf, sndconfig, sizeof(virtio_snd_config)); le32_to_cpus(&s->snd_conf.jacks); le32_to_cpus(&s->snd_conf.streams); le32_to_cpus(&s->snd_conf.chmaps); } /* * Queue handler stub. * * @vdev: VirtIOSound device * @vq: virtqueue */ static void virtio_snd_handle_queue(VirtIODevice *vdev, VirtQueue *vq) {} static uint64_t get_features(VirtIODevice *vdev, uint64_t features, Error **errp) { /* * virtio-v1.2-csd01, 5.14.3, * Feature Bits * None currently defined. */ VirtIOSound *s = VIRTIO_SND(vdev); features |= s->features; trace_virtio_snd_get_features(vdev, features); return features; } static void virtio_snd_vm_state_change(void *opaque, bool running, RunState state) { if (running) { trace_virtio_snd_vm_state_running(); } else { trace_virtio_snd_vm_state_stopped(); } } static void virtio_snd_realize(DeviceState *dev, Error **errp) { ERRP_GUARD(); VirtIOSound *vsnd = VIRTIO_SND(dev); VirtIODevice *vdev = VIRTIO_DEVICE(dev); vsnd->vmstate = qemu_add_vm_change_state_handler(virtio_snd_vm_state_change, vsnd); trace_virtio_snd_realize(vsnd); virtio_init(vdev, VIRTIO_ID_SOUND, sizeof(virtio_snd_config)); virtio_add_feature(&vsnd->features, VIRTIO_F_VERSION_1); /* set number of jacks and streams */ if (vsnd->snd_conf.jacks > 8) { error_setg(errp, "Invalid number of jacks: %"PRIu32, vsnd->snd_conf.jacks); return; } if (vsnd->snd_conf.streams < 1 || vsnd->snd_conf.streams > 10) { error_setg(errp, "Invalid number of streams: %"PRIu32, vsnd->snd_conf.streams); return; } if (vsnd->snd_conf.chmaps > VIRTIO_SND_CHMAP_MAX_SIZE) { error_setg(errp, "Invalid number of channel maps: %"PRIu32, vsnd->snd_conf.chmaps); return; } AUD_register_card("virtio-sound", &vsnd->card, errp); vsnd->queues[VIRTIO_SND_VQ_CONTROL] = virtio_add_queue(vdev, 64, virtio_snd_handle_queue); vsnd->queues[VIRTIO_SND_VQ_EVENT] = virtio_add_queue(vdev, 64, virtio_snd_handle_queue); vsnd->queues[VIRTIO_SND_VQ_TX] = virtio_add_queue(vdev, 64, virtio_snd_handle_queue); vsnd->queues[VIRTIO_SND_VQ_RX] = virtio_add_queue(vdev, 64, virtio_snd_handle_queue); } static void virtio_snd_unrealize(DeviceState *dev) { VirtIODevice *vdev = VIRTIO_DEVICE(dev); VirtIOSound *vsnd = VIRTIO_SND(dev); qemu_del_vm_change_state_handler(vsnd->vmstate); trace_virtio_snd_unrealize(vsnd); AUD_remove_card(&vsnd->card); virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_CONTROL]); virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_EVENT]); virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_TX]); virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_RX]); virtio_cleanup(vdev); } static void virtio_snd_reset(VirtIODevice *vdev) {} static void virtio_snd_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); set_bit(DEVICE_CATEGORY_SOUND, dc->categories); device_class_set_props(dc, virtio_snd_properties); dc->vmsd = &vmstate_virtio_snd; vdc->vmsd = &vmstate_virtio_snd_device; vdc->realize = virtio_snd_realize; vdc->unrealize = virtio_snd_unrealize; vdc->get_config = virtio_snd_get_config; vdc->set_config = virtio_snd_set_config; vdc->get_features = get_features; vdc->reset = virtio_snd_reset; vdc->legacy_features = 0; } static const TypeInfo virtio_snd_types[] = { { .name = TYPE_VIRTIO_SND, .parent = TYPE_VIRTIO_DEVICE, .instance_size = sizeof(VirtIOSound), .class_init = virtio_snd_class_init, } }; DEFINE_TYPES(virtio_snd_types)