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-user-fs-pci.c (2799B)

      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#include "qom/object.h"
     19
     20struct VHostUserFSPCI {
     21    VirtIOPCIProxy parent_obj;
     22    VHostUserFS vdev;
     23};
     24
     25typedef struct VHostUserFSPCI VHostUserFSPCI;
     26
     27#define TYPE_VHOST_USER_FS_PCI "vhost-user-fs-pci-base"
     28
     29DECLARE_INSTANCE_CHECKER(VHostUserFSPCI, VHOST_USER_FS_PCI,
     30                         TYPE_VHOST_USER_FS_PCI)
     31
     32static Property vhost_user_fs_pci_properties[] = {
     33    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
     34                       DEV_NVECTORS_UNSPECIFIED),
     35    DEFINE_PROP_END_OF_LIST(),
     36};
     37
     38static void vhost_user_fs_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     39{
     40    VHostUserFSPCI *dev = VHOST_USER_FS_PCI(vpci_dev);
     41    DeviceState *vdev = DEVICE(&dev->vdev);
     42
     43    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
     44        /* Also reserve config change and hiprio queue vectors */
     45        vpci_dev->nvectors = dev->vdev.conf.num_request_queues + 2;
     46    }
     47
     48    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     49}
     50
     51static void vhost_user_fs_pci_class_init(ObjectClass *klass, void *data)
     52{
     53    DeviceClass *dc = DEVICE_CLASS(klass);
     54    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     55    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     56    k->realize = vhost_user_fs_pci_realize;
     57    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     58    device_class_set_props(dc, vhost_user_fs_pci_properties);
     59    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     60    pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
     61    pcidev_k->revision = 0x00;
     62    pcidev_k->class_id = PCI_CLASS_STORAGE_OTHER;
     63}
     64
     65static void vhost_user_fs_pci_instance_init(Object *obj)
     66{
     67    VHostUserFSPCI *dev = VHOST_USER_FS_PCI(obj);
     68
     69    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     70                                TYPE_VHOST_USER_FS);
     71    object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
     72                              "bootindex");
     73}
     74
     75static const VirtioPCIDeviceTypeInfo vhost_user_fs_pci_info = {
     76    .base_name             = TYPE_VHOST_USER_FS_PCI,
     77    .non_transitional_name = "vhost-user-fs-pci",
     78    .instance_size = sizeof(VHostUserFSPCI),
     79    .instance_init = vhost_user_fs_pci_instance_init,
     80    .class_init    = vhost_user_fs_pci_class_init,
     81};
     82
     83static void vhost_user_fs_pci_register(void)
     84{
     85    virtio_pci_types_register(&vhost_user_fs_pci_info);
     86}
     87
     88type_init(vhost_user_fs_pci_register);