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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virtio-iommu-pci.c (3956B)

      1/*
      2 * Virtio IOMMU PCI Bindings
      3 *
      4 * Copyright (c) 2019 Red Hat, Inc.
      5 * Written by Eric Auger
      6 *
      7 *  This program is free software; you can redistribute it and/or modify
      8 *  it under the terms of the GNU General Public License version 2 or
      9 *  (at your option) any later version.
     10 */
     11
     12#include "qemu/osdep.h"
     13
     14#include "virtio-pci.h"
     15#include "hw/virtio/virtio-iommu.h"
     16#include "hw/qdev-properties.h"
     17#include "hw/qdev-properties-system.h"
     18#include "qapi/error.h"
     19#include "hw/boards.h"
     20#include "qom/object.h"
     21
     22typedef struct VirtIOIOMMUPCI VirtIOIOMMUPCI;
     23
     24/*
     25 * virtio-iommu-pci: This extends VirtioPCIProxy.
     26 *
     27 */
     28DECLARE_INSTANCE_CHECKER(VirtIOIOMMUPCI, VIRTIO_IOMMU_PCI,
     29                         TYPE_VIRTIO_IOMMU_PCI)
     30
     31struct VirtIOIOMMUPCI {
     32    VirtIOPCIProxy parent_obj;
     33    VirtIOIOMMU vdev;
     34};
     35
     36static Property virtio_iommu_pci_properties[] = {
     37    DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
     38    DEFINE_PROP_ARRAY("reserved-regions", VirtIOIOMMUPCI,
     39                      vdev.nb_reserved_regions, vdev.reserved_regions,
     40                      qdev_prop_reserved_region, ReservedRegion),
     41    DEFINE_PROP_END_OF_LIST(),
     42};
     43
     44static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     45{
     46    VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(vpci_dev);
     47    DeviceState *vdev = DEVICE(&dev->vdev);
     48    VirtIOIOMMU *s = VIRTIO_IOMMU(vdev);
     49
     50    if (!qdev_get_machine_hotplug_handler(DEVICE(vpci_dev))) {
     51        MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
     52
     53        error_setg(errp,
     54                   "%s machine fails to create iommu-map device tree bindings",
     55                   mc->name);
     56        error_append_hint(errp,
     57                          "Check your machine implements a hotplug handler "
     58                          "for the virtio-iommu-pci device\n");
     59        error_append_hint(errp, "Check the guest is booted without FW or with "
     60                          "-no-acpi\n");
     61        return;
     62    }
     63    for (int i = 0; i < s->nb_reserved_regions; i++) {
     64        if (s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_RESERVED &&
     65            s->reserved_regions[i].type != VIRTIO_IOMMU_RESV_MEM_T_MSI) {
     66            error_setg(errp, "reserved region %d has an invalid type", i);
     67            error_append_hint(errp, "Valid values are 0 and 1\n");
     68        }
     69    }
     70    object_property_set_link(OBJECT(dev), "primary-bus",
     71                             OBJECT(pci_get_bus(&vpci_dev->pci_dev)),
     72                             &error_abort);
     73    virtio_pci_force_virtio_1(vpci_dev);
     74    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     75}
     76
     77static void virtio_iommu_pci_class_init(ObjectClass *klass, void *data)
     78{
     79    DeviceClass *dc = DEVICE_CLASS(klass);
     80    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     81    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     82    k->realize = virtio_iommu_pci_realize;
     83    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     84    device_class_set_props(dc, virtio_iommu_pci_properties);
     85    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     86    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_IOMMU;
     87    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
     88    pcidev_k->class_id = PCI_CLASS_OTHERS;
     89    dc->hotpluggable = false;
     90}
     91
     92static void virtio_iommu_pci_instance_init(Object *obj)
     93{
     94    VirtIOIOMMUPCI *dev = VIRTIO_IOMMU_PCI(obj);
     95
     96    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     97                                TYPE_VIRTIO_IOMMU);
     98}
     99
    100static const VirtioPCIDeviceTypeInfo virtio_iommu_pci_info = {
    101    .base_name             = TYPE_VIRTIO_IOMMU_PCI,
    102    .generic_name          = "virtio-iommu-pci",
    103    .non_transitional_name = "virtio-iommu-pci-non-transitional",
    104    .instance_size = sizeof(VirtIOIOMMUPCI),
    105    .instance_init = virtio_iommu_pci_instance_init,
    106    .class_init    = virtio_iommu_pci_class_init,
    107};
    108
    109static void virtio_iommu_pci_register(void)
    110{
    111    virtio_pci_types_register(&virtio_iommu_pci_info);
    112}
    113
    114type_init(virtio_iommu_pci_register)
    115
    116