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-scsi-pci.c (3204B)

      1/*
      2 * Vhost scsi PCI bindings
      3 *
      4 * Copyright IBM, Corp. 2011
      5 *
      6 * Authors:
      7 *  Stefan Hajnoczi   <stefanha@linux.vnet.ibm.com>
      8 *
      9 * Changes for QEMU mainline + tcm_vhost kernel upstream:
     10 *  Nicholas Bellinger <nab@risingtidesystems.com>
     11 *
     12 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
     13 * See the COPYING.LIB file in the top-level directory.
     14 *
     15 */
     16
     17#include "qemu/osdep.h"
     18
     19#include "standard-headers/linux/virtio_pci.h"
     20#include "hw/qdev-properties.h"
     21#include "hw/virtio/vhost-scsi.h"
     22#include "qapi/error.h"
     23#include "qemu/module.h"
     24#include "virtio-pci.h"
     25#include "qom/object.h"
     26
     27typedef struct VHostSCSIPCI VHostSCSIPCI;
     28
     29/*
     30 * vhost-scsi-pci: This extends VirtioPCIProxy.
     31 */
     32#define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci-base"
     33DECLARE_INSTANCE_CHECKER(VHostSCSIPCI, VHOST_SCSI_PCI,
     34                         TYPE_VHOST_SCSI_PCI)
     35
     36struct VHostSCSIPCI {
     37    VirtIOPCIProxy parent_obj;
     38    VHostSCSI vdev;
     39};
     40
     41static Property vhost_scsi_pci_properties[] = {
     42    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
     43                       DEV_NVECTORS_UNSPECIFIED),
     44    DEFINE_PROP_END_OF_LIST(),
     45};
     46
     47static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     48{
     49    VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev);
     50    DeviceState *vdev = DEVICE(&dev->vdev);
     51    VirtIOSCSIConf *conf = &dev->vdev.parent_obj.parent_obj.conf;
     52
     53    if (conf->num_queues == VIRTIO_SCSI_AUTO_NUM_QUEUES) {
     54        conf->num_queues =
     55            virtio_pci_optimal_num_queues(VIRTIO_SCSI_VQ_NUM_FIXED);
     56    }
     57
     58    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
     59        vpci_dev->nvectors = conf->num_queues + VIRTIO_SCSI_VQ_NUM_FIXED + 1;
     60    }
     61
     62    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     63}
     64
     65static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data)
     66{
     67    DeviceClass *dc = DEVICE_CLASS(klass);
     68    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     69    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     70    k->realize = vhost_scsi_pci_realize;
     71    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     72    device_class_set_props(dc, vhost_scsi_pci_properties);
     73    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     74    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
     75    pcidev_k->revision = 0x00;
     76    pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
     77}
     78
     79static void vhost_scsi_pci_instance_init(Object *obj)
     80{
     81    VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj);
     82
     83    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     84                                TYPE_VHOST_SCSI);
     85    object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
     86                              "bootindex");
     87}
     88
     89static const VirtioPCIDeviceTypeInfo vhost_scsi_pci_info = {
     90    .base_name             = TYPE_VHOST_SCSI_PCI,
     91    .generic_name          = "vhost-scsi-pci",
     92    .transitional_name     = "vhost-scsi-pci-transitional",
     93    .non_transitional_name = "vhost-scsi-pci-non-transitional",
     94    .instance_size = sizeof(VHostSCSIPCI),
     95    .instance_init = vhost_scsi_pci_instance_init,
     96    .class_init    = vhost_scsi_pci_class_init,
     97};
     98
     99static void vhost_scsi_pci_register(void)
    100{
    101    virtio_pci_types_register(&vhost_scsi_pci_info);
    102}
    103
    104type_init(vhost_scsi_pci_register)