cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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virtio-net-pci.c (3426B)

      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)