1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (C) 2020 Intel Corporation. All rights reserved. 3 */ 4 5 #ifndef _VFIO_INTERNAL_H 6 #define _VFIO_INTERNAL_H 7 8 #include <linux/vfio.h> 9 #include "spdk/vfio_user_spec.h" 10 11 #define VFIO_USER_MAJOR_VER 0 12 #define VFIO_USER_MINOR_VER 1 13 14 /* Maximum memory regions supported */ 15 #define VFIO_MAXIMUM_MEMORY_REGIONS 16 16 /* Maximum sparse memory regions in one BAR region */ 17 #define VFIO_MAXIMUM_SPARSE_MMAP_REGIONS 8 18 19 struct vfio_memory_region { 20 uint64_t iova; 21 uint64_t size; /* bytes */ 22 uint64_t vaddr; 23 uint64_t offset; 24 int fd; 25 TAILQ_ENTRY(vfio_memory_region) link; 26 }; 27 28 struct vfio_sparse_mmaps { 29 void *mem; 30 uint64_t offset; 31 size_t size; 32 }; 33 34 struct vfio_pci_region { 35 uint64_t offset; 36 size_t size; 37 uint64_t flags; 38 uint32_t nr_mmaps; 39 struct vfio_sparse_mmaps mmaps[VFIO_MAXIMUM_SPARSE_MMAP_REGIONS]; 40 }; 41 42 struct vfio_device { 43 int fd; 44 45 char name[64]; 46 char path[PATH_MAX]; 47 48 TAILQ_ENTRY(vfio_device) link; 49 50 /* PCI Regions */ 51 uint32_t pci_regions; 52 struct vfio_pci_region regions[VFIO_PCI_NUM_REGIONS + 1]; 53 uint64_t flags; 54 55 struct spdk_mem_map *map; 56 TAILQ_HEAD(, vfio_memory_region) mrs_head; 57 uint32_t nr_mrs; 58 }; 59 60 int vfio_user_dev_setup(struct vfio_device *dev); 61 int vfio_user_get_dev_info(struct vfio_device *dev, struct vfio_user_device_info *dev_info, 62 size_t buf_len); 63 int vfio_user_get_dev_region_info(struct vfio_device *dev, struct vfio_region_info *region_info, 64 size_t buf_len, int *fds, int num_fds); 65 int vfio_user_dev_dma_map_unmap(struct vfio_device *dev, struct vfio_memory_region *mr, bool map); 66 int vfio_user_dev_mmio_access(struct vfio_device *dev, uint32_t index, uint64_t offset, size_t len, 67 void *buf, bool is_write); 68 /* For fuzzing only */ 69 int vfio_user_dev_send_request(struct vfio_device *dev, enum vfio_user_command command, 70 void *arg, size_t arg_len, size_t buf_len, int *fds, 71 int max_fds); 72 73 #endif 74