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

   1/*
   2 * Vhost-user vsock PCI Bindings
   3 *
   4 * Copyright 2020 Red Hat, Inc.
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or
   7 * (at your option) any later version.  See the COPYING file in the
   8 * top-level directory.
   9 */
  10
  11#include "qemu/osdep.h"
  12
  13#include "virtio-pci.h"
  14#include "hw/qdev-properties.h"
  15#include "hw/virtio/vhost-user-vsock.h"
  16#include "qom/object.h"
  17
  18typedef struct VHostUserVSockPCI VHostUserVSockPCI;
  19
  20/*
  21 * vhost-user-vsock-pci: This extends VirtioPCIProxy.
  22 */
  23#define TYPE_VHOST_USER_VSOCK_PCI "vhost-user-vsock-pci-base"
  24DECLARE_INSTANCE_CHECKER(VHostUserVSockPCI, VHOST_USER_VSOCK_PCI,
  25                         TYPE_VHOST_USER_VSOCK_PCI)
  26
  27struct VHostUserVSockPCI {
  28    VirtIOPCIProxy parent_obj;
  29    VHostUserVSock vdev;
  30};
  31
  32/* vhost-user-vsock-pci */
  33
  34static Property vhost_user_vsock_pci_properties[] = {
  35    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
  36    DEFINE_PROP_END_OF_LIST(),
  37};
  38
  39static void vhost_user_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  40{
  41    VHostUserVSockPCI *dev = VHOST_USER_VSOCK_PCI(vpci_dev);
  42    DeviceState *vdev = DEVICE(&dev->vdev);
  43
  44    /* unlike vhost-vsock, we do not need to care about pre-5.1 compat */
  45    virtio_pci_force_virtio_1(vpci_dev);
  46
  47    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  48}
  49
  50static void vhost_user_vsock_pci_class_init(ObjectClass *klass, void *data)
  51{
  52    DeviceClass *dc = DEVICE_CLASS(klass);
  53    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  54    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  55    k->realize = vhost_user_vsock_pci_realize;
  56    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  57    device_class_set_props(dc, vhost_user_vsock_pci_properties);
  58    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  59    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
  60    pcidev_k->revision = 0x00;
  61    pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
  62}
  63
  64static void vhost_user_vsock_pci_instance_init(Object *obj)
  65{
  66    VHostUserVSockPCI *dev = VHOST_USER_VSOCK_PCI(obj);
  67
  68    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  69                                TYPE_VHOST_USER_VSOCK);
  70}
  71
  72static const VirtioPCIDeviceTypeInfo vhost_user_vsock_pci_info = {
  73    .base_name             = TYPE_VHOST_USER_VSOCK_PCI,
  74    .generic_name          = "vhost-user-vsock-pci",
  75    .non_transitional_name = "vhost-user-vsock-pci-non-transitional",
  76    .instance_size = sizeof(VHostUserVSockPCI),
  77    .instance_init = vhost_user_vsock_pci_instance_init,
  78    .class_init    = vhost_user_vsock_pci_class_init,
  79};
  80
  81static void virtio_pci_vhost_register(void)
  82{
  83    virtio_pci_types_register(&vhost_user_vsock_pci_info);
  84}
  85
  86type_init(virtio_pci_vhost_register)
  87