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
  27 typedef struct VirtIONetPCI VirtIONetPCI;
  28
  29 /*
  30  * virtio-net-pci: This extends VirtioPCIProxy.
  31  */
  32 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci-base"
  33 DECLARE_INSTANCE_CHECKER(VirtIONetPCI, VIRTIO_NET_PCI,
  34                          TYPE_VIRTIO_NET_PCI)
  35
  36 struct VirtIONetPCI {
  37     VirtIOPCIProxy parent_obj;
  38     VirtIONet vdev;
  39 };
  40
  41 static 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
  49 static 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
  67 static 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
  83 static 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
  93 static 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
 103 static void virtio_net_pci_register(void)
 104 {
 105     virtio_pci_types_register(&virtio_net_pci_info);
 106 }
 107
 108 type_init(virtio_net_pci_register)