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-blk-pci.c (3512B)

      1/*
      2 * Vhost user blk PCI Bindings
      3 *
      4 * Copyright(C) 2017 Intel Corporation.
      5 *
      6 * Authors:
      7 *  Changpeng Liu <changpeng.liu@intel.com>
      8 *
      9 * Largely based on the "vhost-user-scsi.c" and "vhost-scsi.c" implemented by:
     10 * Felipe Franciosi <felipe@nutanix.com>
     11 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
     12 * Nicholas Bellinger <nab@risingtidesystems.com>
     13 *
     14 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
     15 * See the COPYING.LIB file in the top-level directory.
     16 *
     17 */
     18
     19#include "qemu/osdep.h"
     20
     21#include "standard-headers/linux/virtio_pci.h"
     22#include "hw/virtio/virtio.h"
     23#include "hw/virtio/vhost-user-blk.h"
     24#include "hw/pci/pci.h"
     25#include "hw/qdev-properties.h"
     26#include "qapi/error.h"
     27#include "qemu/error-report.h"
     28#include "qemu/module.h"
     29#include "virtio-pci.h"
     30#include "qom/object.h"
     31
     32typedef struct VHostUserBlkPCI VHostUserBlkPCI;
     33
     34/*
     35 * vhost-user-blk-pci: This extends VirtioPCIProxy.
     36 */
     37#define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci-base"
     38DECLARE_INSTANCE_CHECKER(VHostUserBlkPCI, VHOST_USER_BLK_PCI,
     39                         TYPE_VHOST_USER_BLK_PCI)
     40
     41struct VHostUserBlkPCI {
     42    VirtIOPCIProxy parent_obj;
     43    VHostUserBlk vdev;
     44};
     45
     46static Property vhost_user_blk_pci_properties[] = {
     47    DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
     48    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
     49                       DEV_NVECTORS_UNSPECIFIED),
     50    DEFINE_PROP_END_OF_LIST(),
     51};
     52
     53static void vhost_user_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     54{
     55    VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(vpci_dev);
     56    DeviceState *vdev = DEVICE(&dev->vdev);
     57
     58    if (dev->vdev.num_queues == VHOST_USER_BLK_AUTO_NUM_QUEUES) {
     59        dev->vdev.num_queues = virtio_pci_optimal_num_queues(0);
     60    }
     61
     62    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
     63        vpci_dev->nvectors = dev->vdev.num_queues + 1;
     64    }
     65
     66    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     67}
     68
     69static void vhost_user_blk_pci_class_init(ObjectClass *klass, void *data)
     70{
     71    DeviceClass *dc = DEVICE_CLASS(klass);
     72    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     73    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     74
     75    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     76    device_class_set_props(dc, vhost_user_blk_pci_properties);
     77    k->realize = vhost_user_blk_pci_realize;
     78    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     79    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
     80    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
     81    pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
     82}
     83
     84static void vhost_user_blk_pci_instance_init(Object *obj)
     85{
     86    VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(obj);
     87
     88    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     89                                TYPE_VHOST_USER_BLK);
     90    object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
     91                              "bootindex");
     92}
     93
     94static const VirtioPCIDeviceTypeInfo vhost_user_blk_pci_info = {
     95    .base_name               = TYPE_VHOST_USER_BLK_PCI,
     96    .generic_name            = "vhost-user-blk-pci",
     97    .transitional_name       = "vhost-user-blk-pci-transitional",
     98    .non_transitional_name   = "vhost-user-blk-pci-non-transitional",
     99    .instance_size  = sizeof(VHostUserBlkPCI),
    100    .instance_init  = vhost_user_blk_pci_instance_init,
    101    .class_init     = vhost_user_blk_pci_class_init,
    102};
    103
    104static void vhost_user_blk_pci_register(void)
    105{
    106    virtio_pci_types_register(&vhost_user_blk_pci_info);
    107}
    108
    109type_init(vhost_user_blk_pci_register)