| 1 | /* |
| 2 | * VFIO region |
| 3 | * |
| 4 | * Copyright Red Hat, Inc. 2025 |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 7 | */ |
| 8 | |
| 9 | #ifndef HW_VFIO_REGION_H |
| 10 | #define HW_VFIO_REGION_H |
| 11 | |
| 12 | #include "system/memory.h" |
| 13 | |
| 14 | typedef struct VFIOMmap { |
| 15 | MemoryRegion mem; |
| 16 | void *mmap; |
| 17 | off_t offset; |
| 18 | size_t size; |
| 19 | } VFIOMmap; |
| 20 | |
| 21 | typedef struct VFIODevice VFIODevice; |
| 22 | |
| 23 | typedef struct VFIORegion { |
| 24 | struct VFIODevice *vbasedev; |
| 25 | off_t fd_offset; /* offset of region within device fd */ |
| 26 | MemoryRegion *mem; /* slow, read/write access */ |
| 27 | size_t size; |
| 28 | uint32_t flags; /* VFIO region flags (rd/wr/mmap) */ |
| 29 | uint32_t nr_mmaps; |
| 30 | VFIOMmap *mmaps; |
| 31 | uint8_t nr; /* cache the region number for debug */ |
| 32 | bool post_wr; /* writes can be posted */ |
| 33 | } VFIORegion; |
| 34 | |
| 35 | |
| 36 | void vfio_region_write(void *opaque, hwaddr addr, |
| 37 | uint64_t data, unsigned size); |
| 38 | uint64_t vfio_region_read(void *opaque, |
| 39 | hwaddr addr, unsigned size); |
| 40 | int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, |
| 41 | int index, const char *name, Error **errp); |
| 42 | int vfio_region_mmap(VFIORegion *region); |
| 43 | void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled); |
| 44 | void vfio_region_exit(VFIORegion *region); |
| 45 | void vfio_region_finalize(VFIORegion *region); |
| 46 | |
| 47 | #endif /* HW_VFIO_REGION_H */ |