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 GTree *domains; 57 QemuMutex mutex; 58 GTree *endpoints; 59 } VirtIOIOMMU; 60 61 #endif 62