include/hw/virtio/virtio-iommu.h

   1 /*
   2  * virtio-iommu device
   3  *
   4  * Copyright (c) 2020 Red Hat, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2 or later, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifndef QEMU_VIRTIO_IOMMU_H
  21 #define QEMU_VIRTIO_IOMMU_H
  22
  23 #include "standard-headers/linux/virtio_iommu.h"
  24 #include "hw/virtio/virtio.h"
  25 #include "hw/pci/pci.h"
  26
  27 #define TYPE_VIRTIO_IOMMU "virtio-iommu-device"
  28 #define TYPE_VIRTIO_IOMMU_PCI "virtio-iommu-device-base"
  29 #define VIRTIO_IOMMU(obj) \
  30         OBJECT_CHECK(VirtIOIOMMU, (obj), TYPE_VIRTIO_IOMMU)
  31
  32 #define TYPE_VIRTIO_IOMMU_MEMORY_REGION "virtio-iommu-memory-region"
  33
  34 typedef struct IOMMUDevice {
  35     void         *viommu;
  36     PCIBus       *bus;
  37     int           devfn;
  38     IOMMUMemoryRegion  iommu_mr;
  39     AddressSpace  as;
  40 } IOMMUDevice;
  41
  42 typedef struct IOMMUPciBus {
  43     PCIBus       *bus;
  44     IOMMUDevice  *pbdev[]; /* Parent array is sparse, so dynamically alloc */
  45 } IOMMUPciBus;
  46
  47 typedef struct VirtIOIOMMU {
  48     VirtIODevice parent_obj;
  49     VirtQueue *req_vq;
  50     VirtQueue *event_vq;
  51     struct virtio_iommu_config config;
  52     uint64_t features;
  53     GHashTable *as_by_busptr;
  54     IOMMUPciBus *iommu_pcibus_by_bus_num[PCI_BUS_MAX];
  55     PCIBus *primary_bus;
  56     ReservedRegion *reserved_regions;
  57     uint32_t nb_reserved_regions;
  58     GTree *domains;
  59     QemuMutex mutex;
  60     GTree *endpoints;
  61 } VirtIOIOMMU;
  62
  63 #endif