From: Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org> This patch adds a PCI wrapper device for the virtio-sound device. It is necessary to instantiate a virtio-snd device in a guest. All sound logic will be added to the virtio-snd device in the following commits.
To add this device with a guest, you'll need a >=5.13 kernel compiled with CONFIG_SND_VIRTIO=y, which at the time of writing most distros have off by default. Use with following flags in the invocation: Pulseaudio: -audio driver=pa,model=virtio or -audio driver=pa,model=virtio,server=/run/user/1000/pulse/native sdl: -audio driver=sdl,model=virtio coreaudio (macos/darwin): -audio driver=coreaudio,model=virtio etc. Based-on: https://github.com/OpenSynergy/qemu/commit/5a2f350eec5d157b90d9c7b40a8e603f4da92471 Reviewed-by: Alex Bennée <alex.ben...@linaro.org> Signed-off-by: Igor Skalkin <igor.skal...@opensynergy.com> Signed-off-by: Anton Yakovlev <anton.yakov...@opensynergy.com> Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org> --- hw/virtio/meson.build | 1 + hw/virtio/virtio-snd-pci.c (new) | 93 ++++++++++++++++++++++++++++++++ hw/virtio/virtio-snd.c | 14 ++++- system/qdev-monitor.c | 1 + 4 files changed, 107 insertions(+), 2 deletions(-) diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build index d0572b298c..6233795018 100644 --- a/hw/virtio/meson.build +++ b/hw/virtio/meson.build @@ -67,6 +67,7 @@ virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SERIAL', if_true: files('virtio-serial-pc virtio_pci_ss.add(when: 'CONFIG_VIRTIO_PMEM', if_true: files('virtio-pmem-pci.c')) virtio_pci_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu-pci.c')) virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem-pci.c')) +virtio_pci_ss.add(when: 'CONFIG_VIRTIO_SND', if_true: files('virtio-snd-pci.c')) virtio_pci_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev-pci.c')) virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MD', if_true: files('virtio-md-pci.c')) diff --git a/hw/virtio/virtio-snd-pci.c b/hw/virtio/virtio-snd-pci.c new file mode 100644 index 0000000000..afe50a5354 --- /dev/null +++ b/hw/virtio/virtio-snd-pci.c @@ -0,0 +1,93 @@ +/* + * VIRTIO Sound Device PCI Bindings + * + * Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org> + * + * 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 "qom/object.h" +#include "qapi/error.h" +#include "hw/audio/soundhw.h" +#include "hw/virtio/virtio-pci.h" +#include "hw/virtio/virtio-snd.h" + +/* + * virtio-snd-pci: This extends VirtioPCIProxy. + */ +#define TYPE_VIRTIO_SND_PCI "virtio-sound-pci" +OBJECT_DECLARE_SIMPLE_TYPE(VirtIOSoundPCI, VIRTIO_SND_PCI) + +struct VirtIOSoundPCI { + VirtIOPCIProxy parent_obj; + + VirtIOSound vdev; +}; + +static Property virtio_snd_pci_properties[] = { + DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, + VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), + DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_snd_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) +{ + VirtIOSoundPCI *dev = VIRTIO_SND_PCI(vpci_dev); + DeviceState *vdev = DEVICE(&dev->vdev); + + virtio_pci_force_virtio_1(vpci_dev); + qdev_realize(vdev, BUS(&vpci_dev->bus), errp); +} + +static void virtio_snd_pci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass); + + device_class_set_props(dc, virtio_snd_pci_properties); + dc->desc = "Virtio Sound"; + set_bit(DEVICE_CATEGORY_SOUND, dc->categories); + + vpciklass->realize = virtio_snd_pci_realize; +} + +static void virtio_snd_pci_instance_init(Object *obj) +{ + VirtIOSoundPCI *dev = VIRTIO_SND_PCI(obj); + + virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), + TYPE_VIRTIO_SND); +} + +static const VirtioPCIDeviceTypeInfo virtio_snd_pci_info = { + .generic_name = TYPE_VIRTIO_SND_PCI, + .instance_size = sizeof(VirtIOSoundPCI), + .instance_init = virtio_snd_pci_instance_init, + .class_init = virtio_snd_pci_class_init, +}; + +/* Create a Virtio Sound PCI device, so '-audio driver,model=virtio' works. */ +static int virtio_snd_pci_init(PCIBus *bus, const char *audiodev) +{ + DeviceState *vdev = NULL; + VirtIOSoundPCI *dev = NULL; + + vdev = qdev_new(TYPE_VIRTIO_SND_PCI); + assert(vdev); + dev = VIRTIO_SND_PCI(vdev); + qdev_prop_set_string(DEVICE(&dev->vdev), "audiodev", audiodev); + qdev_realize_and_unref(vdev, BUS(bus), &error_fatal); + return 0; +} + +static void virtio_snd_pci_register(void) +{ + virtio_pci_types_register(&virtio_snd_pci_info); + pci_register_soundhw("virtio", "Virtio Sound", virtio_snd_pci_init); +} + +type_init(virtio_snd_pci_register); diff --git a/hw/virtio/virtio-snd.c b/hw/virtio/virtio-snd.c index adce9f371e..14bc32f476 100644 --- a/hw/virtio/virtio-snd.c +++ b/hw/virtio/virtio-snd.c @@ -63,36 +63,46 @@ 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(config, &s->snd_conf, sizeof(s->snd_conf)); + 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(s->snd_conf)); + 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 */ diff --git a/system/qdev-monitor.c b/system/qdev-monitor.c index 74f4e41338..2e9835ad88 100644 --- a/system/qdev-monitor.c +++ b/system/qdev-monitor.c @@ -68,48 +68,49 @@ typedef struct QDevAlias /* Please keep this table sorted by typename. */ static const QDevAlias qdev_alias_table[] = { { "AC97", "ac97" }, /* -soundhw name */ { "e1000", "e1000-82540em" }, { "ES1370", "es1370" }, /* -soundhw name */ { "ich9-ahci", "ahci" }, { "lsi53c895a", "lsi" }, { "virtio-9p-device", "virtio-9p", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_VIRTIO_CCW }, { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_VIRTIO_PCI }, { "virtio-balloon-device", "virtio-balloon", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_VIRTIO_CCW }, { "virtio-balloon-pci", "virtio-balloon", QEMU_ARCH_VIRTIO_PCI }, { "virtio-blk-device", "virtio-blk", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_VIRTIO_CCW }, { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_VIRTIO_PCI }, { "virtio-gpu-device", "virtio-gpu", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_VIRTIO_CCW }, { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_VIRTIO_PCI }, { "virtio-gpu-gl-device", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-gpu-gl-pci", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_PCI }, { "virtio-input-host-device", "virtio-input-host", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_VIRTIO_CCW }, { "virtio-input-host-pci", "virtio-input-host", QEMU_ARCH_VIRTIO_PCI }, { "virtio-iommu-pci", "virtio-iommu", QEMU_ARCH_VIRTIO_PCI }, { "virtio-keyboard-device", "virtio-keyboard", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_VIRTIO_CCW }, { "virtio-keyboard-pci", "virtio-keyboard", QEMU_ARCH_VIRTIO_PCI }, { "virtio-mouse-device", "virtio-mouse", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_VIRTIO_CCW }, { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_VIRTIO_PCI }, { "virtio-net-device", "virtio-net", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-net-ccw", "virtio-net", QEMU_ARCH_VIRTIO_CCW }, { "virtio-net-pci", "virtio-net", QEMU_ARCH_VIRTIO_PCI }, { "virtio-rng-device", "virtio-rng", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_VIRTIO_CCW }, { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_VIRTIO_PCI }, { "virtio-scsi-device", "virtio-scsi", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_VIRTIO_CCW }, { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_VIRTIO_PCI }, { "virtio-serial-device", "virtio-serial", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW }, { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI}, + { "virtio-sound-pci", "virtio-sound", QEMU_ARCH_VIRTIO_PCI}, { "virtio-tablet-device", "virtio-tablet", QEMU_ARCH_VIRTIO_MMIO }, { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW }, { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI }, { } }; -- 2.39.2
