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

   1/*
   2 * Vhost-user filesystem virtio device PCI glue
   3 *
   4 * Copyright 2018-2019 Red Hat, Inc.
   5 *
   6 * Authors:
   7 *  Dr. David Alan Gilbert <dgilbert@redhat.com>
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2 or
  10 * (at your option) any later version.  See the COPYING file in the
  11 * top-level directory.
  12 */
  13
  14#include "qemu/osdep.h"
  15#include "hw/qdev-properties.h"
  16#include "hw/virtio/vhost-user-fs.h"
  17#include "virtio-pci.h"
  18
  19struct VHostUserFSPCI {
  20    VirtIOPCIProxy parent_obj;
  21    VHostUserFS vdev;
  22};
  23
  24typedef struct VHostUserFSPCI VHostUserFSPCI;
  25
  26#define TYPE_VHOST_USER_FS_PCI "vhost-user-fs-pci-base"
  27
  28#define VHOST_USER_FS_PCI(obj) \
  29        OBJECT_CHECK(VHostUserFSPCI, (obj), TYPE_VHOST_USER_FS_PCI)
  30
  31static Property vhost_user_fs_pci_properties[] = {
  32    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
  33                       DEV_NVECTORS_UNSPECIFIED),
  34    DEFINE_PROP_END_OF_LIST(),
  35};
  36
  37static void vhost_user_fs_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  38{
  39    VHostUserFSPCI *dev = VHOST_USER_FS_PCI(vpci_dev);
  40    DeviceState *vdev = DEVICE(&dev->vdev);
  41
  42    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
  43        vpci_dev->nvectors = dev->vdev.conf.num_request_queues + 1;
  44    }
  45
  46    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  47    object_property_set_bool(OBJECT(vdev), true, "realized", errp);
  48}
  49
  50static void vhost_user_fs_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_fs_pci_realize;
  56    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
  57    dc->props = vhost_user_fs_pci_properties;
  58    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  59    pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
  60    pcidev_k->revision = 0x00;
  61    pcidev_k->class_id = PCI_CLASS_STORAGE_OTHER;
  62}
  63
  64static void vhost_user_fs_pci_instance_init(Object *obj)
  65{
  66    VHostUserFSPCI *dev = VHOST_USER_FS_PCI(obj);
  67
  68    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  69                                TYPE_VHOST_USER_FS);
  70}
  71
  72static const VirtioPCIDeviceTypeInfo vhost_user_fs_pci_info = {
  73    .base_name             = TYPE_VHOST_USER_FS_PCI,
  74    .non_transitional_name = "vhost-user-fs-pci",
  75    .instance_size = sizeof(VHostUserFSPCI),
  76    .instance_init = vhost_user_fs_pci_instance_init,
  77    .class_init    = vhost_user_fs_pci_class_init,
  78};
  79
  80static void vhost_user_fs_pci_register(void)
  81{
  82    virtio_pci_types_register(&vhost_user_fs_pci_info);
  83}
  84
  85type_init(vhost_user_fs_pci_register);
  86