LXR qemu/hw/virtio/virtio-net-pci.c

   1/*
   2 * Virtio net PCI Bindings
   3 *
   4 * Copyright IBM, Corp. 2007
   5 * Copyright (c) 2009 CodeSourcery
   6 *
   7 * Authors:
   8 *  Anthony Liguori   <aliguori@us.ibm.com>
   9 *  Paul Brook        <paul@codesourcery.com>
  10 *
  11 * This work is licensed under the terms of the GNU GPL, version 2.  See
  12 * the COPYING file in the top-level directory.
  13 *
  14 * Contributions after 2012-01-13 are licensed under the terms of the
  15 * GNU GPL, version 2 or (at your option) any later version.
  16 */
  17
  18#include "qemu/osdep.h"
  19
  20#include "hw/qdev-properties.h"
  21#include "hw/virtio/virtio-net.h"
  22#include "virtio-pci.h"
  23#include "qapi/error.h"
  24#include "qemu/module.h"
  25#include "qom/object.h"
  26
  27typedef struct VirtIONetPCI VirtIONetPCI;
  28
  29/*
  30 * virtio-net-pci: This extends VirtioPCIProxy.
  31 */
  32#define TYPE_VIRTIO_NET_PCI "virtio-net-pci-base"
  33DECLARE_INSTANCE_CHECKER(VirtIONetPCI, VIRTIO_NET_PCI,
  34                         TYPE_VIRTIO_NET_PCI)
  35
  36struct VirtIONetPCI {
  37    VirtIOPCIProxy parent_obj;
  38    VirtIONet vdev;
  39};
  40
  41static Property virtio_net_properties[] = {
  42    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
  43                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
  44    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
  45                       DEV_NVECTORS_UNSPECIFIED),
  46    DEFINE_PROP_END_OF_LIST(),
  47};
  48
  49static void virtio_net_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  50{
  51    DeviceState *qdev = DEVICE(vpci_dev);
  52    VirtIONetPCI *dev = VIRTIO_NET_PCI(vpci_dev);
  53    DeviceState *vdev = DEVICE(&dev->vdev);
  54    VirtIONet *net = VIRTIO_NET(vdev);
  55
  56    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
  57        vpci_dev->nvectors = 2 * MAX(net->nic_conf.peers.queues, 1)
  58            + 1 /* Config interrupt */
  59            + 1 /* Control vq */;
  60    }
  61
  62    virtio_net_set_netclient_name(&dev->vdev, qdev->id,
  63                                  object_get_typename(OBJECT(qdev)));
  64    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
  65}
  66
  67static void virtio_net_pci_class_init(ObjectClass *klass, void *data)
  68{
  69    DeviceClass *dc = DEVICE_CLASS(klass);
  70    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  71    VirtioPCIClass *vpciklass = VIRTIO_PCI_CLASS(klass);
  72
  73    k->romfile = "efi-virtio.rom";
  74    k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
  75    k->device_id = PCI_DEVICE_ID_VIRTIO_NET;
  76    k->revision = VIRTIO_PCI_ABI_VERSION;
  77    k->class_id = PCI_CLASS_NETWORK_ETHERNET;
  78    set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
  79    device_class_set_props(dc, virtio_net_properties);
  80    vpciklass->realize = virtio_net_pci_realize;
  81}
  82
  83static void virtio_net_pci_instance_init(Object *obj)
  84{
  85    VirtIONetPCI *dev = VIRTIO_NET_PCI(obj);
  86
  87    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  88                                TYPE_VIRTIO_NET);
  89    object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
  90                              "bootindex");
  91}
  92
  93static const VirtioPCIDeviceTypeInfo virtio_net_pci_info = {
  94    .base_name             = TYPE_VIRTIO_NET_PCI,
  95    .generic_name          = "virtio-net-pci",
  96    .transitional_name     = "virtio-net-pci-transitional",
  97    .non_transitional_name = "virtio-net-pci-non-transitional",
  98    .instance_size = sizeof(VirtIONetPCI),
  99    .instance_init = virtio_net_pci_instance_init,
 100    .class_init    = virtio_net_pci_class_init,
 101};
 102
 103static void virtio_net_pci_register(void)
 104{
 105    virtio_pci_types_register(&virtio_net_pci_info);
 106}
 107
 108type_init(virtio_net_pci_register)
 109