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/*
* VIRTIO Sound Device PCI Bindings
*
* Copyright (c) 2023 Emmanouil Pitsidianakis <manos.pitsidianakis@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/audio/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);
PCIDeviceClass *pcidevklass = PCI_DEVICE_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;
pcidevklass->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
}
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);
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