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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vhost-vsock-pci.c (2821B)

      1/*
      2 * Vhost vsock PCI Bindings
      3 *
      4 * Copyright 2015 Red Hat, Inc.
      5 *
      6 * Authors:
      7 *  Stefan Hajnoczi <stefanha@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
     16#include "virtio-pci.h"
     17#include "hw/qdev-properties.h"
     18#include "hw/virtio/vhost-vsock.h"
     19#include "qemu/module.h"
     20#include "qom/object.h"
     21
     22typedef struct VHostVSockPCI VHostVSockPCI;
     23
     24/*
     25 * vhost-vsock-pci: This extends VirtioPCIProxy.
     26 */
     27#define TYPE_VHOST_VSOCK_PCI "vhost-vsock-pci-base"
     28DECLARE_INSTANCE_CHECKER(VHostVSockPCI, VHOST_VSOCK_PCI,
     29                         TYPE_VHOST_VSOCK_PCI)
     30
     31struct VHostVSockPCI {
     32    VirtIOPCIProxy parent_obj;
     33    VHostVSock vdev;
     34};
     35
     36/* vhost-vsock-pci */
     37
     38static Property vhost_vsock_pci_properties[] = {
     39    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
     40    DEFINE_PROP_END_OF_LIST(),
     41};
     42
     43static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     44{
     45    VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev);
     46    DeviceState *vdev = DEVICE(&dev->vdev);
     47    VirtIODevice *virtio_dev = VIRTIO_DEVICE(vdev);
     48
     49    /*
     50     * To avoid migration issues, we force virtio version 1 only when
     51     * legacy check is enabled in the new machine types (>= 5.1).
     52     */
     53    if (!virtio_legacy_check_disabled(virtio_dev)) {
     54        virtio_pci_force_virtio_1(vpci_dev);
     55    }
     56
     57    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     58}
     59
     60static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
     61{
     62    DeviceClass *dc = DEVICE_CLASS(klass);
     63    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     64    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     65    k->realize = vhost_vsock_pci_realize;
     66    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     67    device_class_set_props(dc, vhost_vsock_pci_properties);
     68    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     69    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
     70    pcidev_k->revision = 0x00;
     71    pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
     72}
     73
     74static void vhost_vsock_pci_instance_init(Object *obj)
     75{
     76    VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
     77
     78    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     79                                TYPE_VHOST_VSOCK);
     80}
     81
     82static const VirtioPCIDeviceTypeInfo vhost_vsock_pci_info = {
     83    .base_name             = TYPE_VHOST_VSOCK_PCI,
     84    .generic_name          = "vhost-vsock-pci",
     85    .non_transitional_name = "vhost-vsock-pci-non-transitional",
     86    .instance_size = sizeof(VHostVSockPCI),
     87    .instance_init = vhost_vsock_pci_instance_init,
     88    .class_init    = vhost_vsock_pci_class_init,
     89};
     90
     91static void virtio_pci_vhost_register(void)
     92{
     93    virtio_pci_types_register(&vhost_vsock_pci_info);
     94}
     95
     96type_init(virtio_pci_vhost_register)