| #ifndef _MM_H |
| #define _MM_H |
| |
| #include <stdbool.h> |
| |
| #include "arch_mm.h" |
| |
| struct mm_ptable { |
| struct arch_mm_ptable arch; |
| pte_t *table; |
| }; |
| |
| #define PAGE_SIZE (1 << PAGE_BITS) |
| |
| /* The following are arch-independent page mapping modes. */ |
| #define MM_MODE_R 0x01 /* read */ |
| #define MM_MODE_W 0x02 /* write */ |
| #define MM_MODE_X 0x04 /* execute */ |
| #define MM_MODE_D 0x08 /* device */ |
| |
| /* |
| * This flag indicates that memory allocation must not use locks. This is |
| * relevant in systems where interlocked operations are only available after |
| * virtual memory is enabled. |
| */ |
| #define MM_MODE_NOSYNC 0x10 |
| |
| /* |
| * This flag indicates that the mapping is intended to be used in a first |
| * stage translation table, which might have different encodings for the |
| * attribute bits than the second stage table. |
| */ |
| #define MM_MODE_STAGE1 0x20 |
| |
| bool mm_ptable_init(struct mm_ptable *t, int mode); |
| void mm_ptable_dump(struct mm_ptable *t); |
| bool mm_ptable_map(struct mm_ptable *t, vaddr_t vaddr_begin, vaddr_t vaddr_end, |
| paddr_t paddr, int mode); |
| bool mm_ptable_map_page(struct mm_ptable *t, vaddr_t va, paddr_t pa, int mode); |
| bool mm_ptable_unmap(struct mm_ptable *t, vaddr_t begin, vaddr_t end, int mode); |
| void mm_ptable_defrag(struct mm_ptable *t); |
| |
| #endif /* _MM_H */ |