| 1 | #ifndef IO_URING_MEMMAP_H |
| 2 | #define IO_URING_MEMMAP_H |
| 3 | |
| 4 | #define IORING_MAP_OFF_PARAM_REGION 0x20000000ULL |
| 5 | #define IORING_MAP_OFF_ZCRX_REGION 0x30000000ULL |
| 6 | |
| 7 | #define IORING_OFF_ZCRX_SHIFT 16 |
| 8 | |
| 9 | struct page **io_pin_pages(unsigned long uaddr, unsigned long len, int *npages); |
| 10 | |
| 11 | #ifndef CONFIG_MMU |
| 12 | unsigned int io_uring_nommu_mmap_capabilities(struct file *file); |
| 13 | #endif |
| 14 | unsigned long io_uring_get_unmapped_area(struct file *file, unsigned long addr, |
| 15 | unsigned long len, unsigned long pgoff, |
| 16 | unsigned long flags); |
| 17 | int io_uring_mmap(struct file *file, struct vm_area_struct *vma); |
| 18 | |
| 19 | void io_free_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr); |
| 20 | int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr, |
| 21 | struct io_uring_region_desc *reg, |
| 22 | unsigned long mmap_offset); |
| 23 | |
| 24 | int io_create_region_mmap_safe(struct io_ring_ctx *ctx, |
| 25 | struct io_mapped_region *mr, |
| 26 | struct io_uring_region_desc *reg, |
| 27 | unsigned long mmap_offset); |
| 28 | |
| 29 | static inline void *io_region_get_ptr(struct io_mapped_region *mr) |
| 30 | { |
| 31 | return mr->ptr; |
| 32 | } |
| 33 | |
| 34 | static inline bool io_region_is_set(struct io_mapped_region *mr) |
| 35 | { |
| 36 | return !!mr->nr_pages; |
| 37 | } |
| 38 | |
| 39 | #endif |
| 40 | |