LXR qemu/hw/virtio/vhost-user-rng-pci.c

   1/*
   2 * Vhost-user RNG virtio device PCI glue
   3 *
   4 * Copyright (c) 2021 Mathieu Poirier <mathieu.poirier@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-rng.h"
  12#include "virtio-pci.h"
  13
  14struct VHostUserRNGPCI {
  15    VirtIOPCIProxy parent_obj;
  16    VHostUserRNG vdev;
  17};
  18
  19typedef struct VHostUserRNGPCI VHostUserRNGPCI;
  20
  21#define TYPE_VHOST_USER_RNG_PCI "vhost-user-rng-pci-base"
  22
  23DECLARE_INSTANCE_CHECKER(VHostUserRNGPCI, VHOST_USER_RNG_PCI,
  24                         TYPE_VHOST_USER_RNG_PCI)
  25
  26static Property vhost_user_rng_pci_properties[] = {
  27    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
  28                       DEV_NVECTORS_UNSPECIFIED),
  29    DEFINE_PROP_END_OF_LIST(),
  30};
  31
  32static void vhost_user_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  33{
  34    VHostUserRNGPCI *dev = VHOST_USER_RNG_PCI(vpci_dev);
  35    DeviceState *vdev = DEVICE(&dev->vdev);
  36
  37    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
  38        vpci_dev->nvectors = 1;
  39    }
  40
  41    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  42}
  43
  44static void vhost_user_rng_pci_class_init(ObjectClass *klass, void *data)
  45{
  46    DeviceClass *dc = DEVICE_CLASS(klass);
  47    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  48    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  49    k->realize = vhost_user_rng_pci_realize;
  50    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
  51    device_class_set_props(dc, vhost_user_rng_pci_properties);
  52    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  53    pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
  54    pcidev_k->revision = 0x00;
  55    pcidev_k->class_id = PCI_CLASS_OTHERS;
  56}
  57
  58static void vhost_user_rng_pci_instance_init(Object *obj)
  59{
  60    VHostUserRNGPCI *dev = VHOST_USER_RNG_PCI(obj);
  61
  62    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  63                                TYPE_VHOST_USER_RNG);
  64}
  65
  66static const VirtioPCIDeviceTypeInfo vhost_user_rng_pci_info = {
  67    .base_name = TYPE_VHOST_USER_RNG_PCI,
  68    .non_transitional_name = "vhost-user-rng-pci",
  69    .instance_size = sizeof(VHostUserRNGPCI),
  70    .instance_init = vhost_user_rng_pci_instance_init,
  71    .class_init = vhost_user_rng_pci_class_init,
  72};
  73
  74static void vhost_user_rng_pci_register(void)
  75{
  76    virtio_pci_types_register(&vhost_user_rng_pci_info);
  77}
  78
  79type_init(vhost_user_rng_pci_register);
  80