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-scsi-pci.c (3602B)

      1/*
      2 * Vhost user scsi PCI Bindings
      3 *
      4 * Copyright (c) 2016 Nutanix Inc. All rights reserved.
      5 *
      6 * Author:
      7 *  Felipe Franciosi <felipe@nutanix.com>
      8 *
      9 * This work is largely based on the "vhost-scsi" implementation by:
     10 *  Stefan Hajnoczi    <stefanha@linux.vnet.ibm.com>
     11 *  Nicholas Bellinger <nab@risingtidesystems.com>
     12 *
     13 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
     14 * See the COPYING.LIB file in the top-level directory.
     15 *
     16 */
     17
     18#include "qemu/osdep.h"
     19
     20#include "standard-headers/linux/virtio_pci.h"
     21#include "hw/virtio/vhost-user-scsi.h"
     22#include "hw/virtio/virtio.h"
     23#include "hw/virtio/virtio-scsi.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 "hw/pci/msi.h"
     30#include "hw/pci/msix.h"
     31#include "hw/loader.h"
     32#include "sysemu/kvm.h"
     33#include "virtio-pci.h"
     34#include "qom/object.h"
     35
     36typedef struct VHostUserSCSIPCI VHostUserSCSIPCI;
     37
     38#define TYPE_VHOST_USER_SCSI_PCI "vhost-user-scsi-pci-base"
     39DECLARE_INSTANCE_CHECKER(VHostUserSCSIPCI, VHOST_USER_SCSI_PCI,
     40                         TYPE_VHOST_USER_SCSI_PCI)
     41
     42struct VHostUserSCSIPCI {
     43    VirtIOPCIProxy parent_obj;
     44    VHostUserSCSI vdev;
     45};
     46
     47static Property vhost_user_scsi_pci_properties[] = {
     48    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
     49                       DEV_NVECTORS_UNSPECIFIED),
     50    DEFINE_PROP_END_OF_LIST(),
     51};
     52
     53static void vhost_user_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     54{
     55    VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(vpci_dev);
     56    DeviceState *vdev = DEVICE(&dev->vdev);
     57    VirtIOSCSIConf *conf = &dev->vdev.parent_obj.parent_obj.conf;
     58
     59    if (conf->num_queues == VIRTIO_SCSI_AUTO_NUM_QUEUES) {
     60        conf->num_queues =
     61            virtio_pci_optimal_num_queues(VIRTIO_SCSI_VQ_NUM_FIXED);
     62    }
     63
     64    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
     65        vpci_dev->nvectors = conf->num_queues + VIRTIO_SCSI_VQ_NUM_FIXED + 1;
     66    }
     67
     68    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     69}
     70
     71static void vhost_user_scsi_pci_class_init(ObjectClass *klass, void *data)
     72{
     73    DeviceClass *dc = DEVICE_CLASS(klass);
     74    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     75    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     76    k->realize = vhost_user_scsi_pci_realize;
     77    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     78    device_class_set_props(dc, vhost_user_scsi_pci_properties);
     79    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     80    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
     81    pcidev_k->revision = 0x00;
     82    pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
     83}
     84
     85static void vhost_user_scsi_pci_instance_init(Object *obj)
     86{
     87    VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(obj);
     88
     89    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     90                                TYPE_VHOST_USER_SCSI);
     91    object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
     92                              "bootindex");
     93}
     94
     95static const VirtioPCIDeviceTypeInfo vhost_user_scsi_pci_info = {
     96    .base_name             = TYPE_VHOST_USER_SCSI_PCI,
     97    .generic_name          = "vhost-user-scsi-pci",
     98    .transitional_name     = "vhost-user-scsi-pci-transitional",
     99    .non_transitional_name = "vhost-user-scsi-pci-non-transitional",
    100    .instance_size = sizeof(VHostUserSCSIPCI),
    101    .instance_init = vhost_user_scsi_pci_instance_init,
    102    .class_init    = vhost_user_scsi_pci_class_init,
    103};
    104
    105static void vhost_user_scsi_pci_register(void)
    106{
    107    virtio_pci_types_register(&vhost_user_scsi_pci_info);
    108}
    109
    110type_init(vhost_user_scsi_pci_register)