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