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 #include "qom/object.h" 27 28 #define TYPE_VIRTIO_IOMMU "virtio-iommu-device" 29 #define TYPE_VIRTIO_IOMMU_PCI "virtio-iommu-pci" 30 OBJECT_DECLARE_SIMPLE_TYPE(VirtIOIOMMU, 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 MemoryRegion root; /* The root container of the device */ 41 MemoryRegion bypass_mr; /* The alias of shared memory MR */ 42 } IOMMUDevice; 43 44 typedef struct IOMMUPciBus { 45 PCIBus *bus; 46 IOMMUDevice *pbdev[]; /* Parent array is sparse, so dynamically alloc */ 47 } IOMMUPciBus; 48 49 struct VirtIOIOMMU { 50 VirtIODevice parent_obj; 51 VirtQueue *req_vq; 52 VirtQueue *event_vq; 53 struct virtio_iommu_config config; 54 uint64_t features; 55 GHashTable *as_by_busptr; 56 IOMMUPciBus *iommu_pcibus_by_bus_num[PCI_BUS_MAX]; 57 PCIBus *primary_bus; 58 ReservedRegion *reserved_regions; 59 uint32_t nb_reserved_regions; 60 GTree *domains; 61 QemuRecMutex mutex; 62 GTree *endpoints; 63 bool boot_bypass; 64 Notifier machine_done; 65 bool granule_frozen; 66 }; 67 68 #endif 69