hw/virtio/vhost-user-snd-pci.c

   1 /*
   2  * Vhost-user Sound virtio device PCI glue
   3  *
   4  * Copyright (c) 2023 Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-or-later
   7  */
   8
   9 #include "qemu/osdep.h"
  10 #include "hw/qdev-properties.h"
  11 #include "hw/virtio/vhost-user-snd.h"
  12 #include "hw/virtio/virtio-pci.h"
  13
  14 struct VHostUserSoundPCI {
  15     VirtIOPCIProxy parent_obj;
  16     VHostUserSound vdev;
  17 };
  18
  19 typedef struct VHostUserSoundPCI VHostUserSoundPCI;
  20
  21 #define TYPE_VHOST_USER_SND_PCI "vhost-user-snd-pci-base"
  22
  23 DECLARE_INSTANCE_CHECKER(VHostUserSoundPCI, VHOST_USER_SND_PCI,
  24                          TYPE_VHOST_USER_SND_PCI)
  25
  26 static Property vhost_user_snd_pci_properties[] = {
  27     DEFINE_PROP_END_OF_LIST(),
  28 };
  29
  30 static void vhost_user_snd_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  31 {
  32     VHostUserSoundPCI *dev = VHOST_USER_SND_PCI(vpci_dev);
  33     DeviceState *vdev = DEVICE(&dev->vdev);
  34
  35     vpci_dev->nvectors = 1;
  36
  37     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  38 }
  39
  40 static void vhost_user_snd_pci_class_init(ObjectClass *klass, void *data)
  41 {
  42     DeviceClass *dc = DEVICE_CLASS(klass);
  43     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  44     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  45     k->realize = vhost_user_snd_pci_realize;
  46     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
  47     device_class_set_props(dc, vhost_user_snd_pci_properties);
  48     pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  49     pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
  50     pcidev_k->revision = 0x00;
  51     pcidev_k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
  52 }
  53
  54 static void vhost_user_snd_pci_instance_init(Object *obj)
  55 {
  56     VHostUserSoundPCI *dev = VHOST_USER_SND_PCI(obj);
  57
  58     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  59                                 TYPE_VHOST_USER_SND);
  60 }
  61
  62 static const VirtioPCIDeviceTypeInfo vhost_user_snd_pci_info = {
  63     .base_name = TYPE_VHOST_USER_SND_PCI,
  64     .non_transitional_name = "vhost-user-snd-pci",
  65     .instance_size = sizeof(VHostUserSoundPCI),
  66     .instance_init = vhost_user_snd_pci_instance_init,
  67     .class_init = vhost_user_snd_pci_class_init,
  68 };
  69
  70 static void vhost_user_snd_pci_register(void)
  71 {
  72     virtio_pci_types_register(&vhost_user_snd_pci_info);
  73 }
  74
  75 type_init(vhost_user_snd_pci_register);