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