| Paul Mundt | e44d6c4 | 2010-01-13 19:18:39 +0900 | [diff] [blame] | 1 | #ifndef __ASM_SH_PGTABLE_2LEVEL_H |
| 2 | #define __ASM_SH_PGTABLE_2LEVEL_H |
| Matt Fleming | b73c806 | 2009-11-25 22:00:08 +0000 | [diff] [blame] | 3 | |
| 4 | #include <asm-generic/pgtable-nopmd.h> |
| 5 | |
| 6 | /* |
| 7 | * traditional two-level paging structure |
| 8 | */ |
| Paul Mundt | 782bb5a | 2010-01-13 19:11:14 +0900 | [diff] [blame] | 9 | #define PAGETABLE_LEVELS 2 |
| Matt Fleming | b73c806 | 2009-11-25 22:00:08 +0000 | [diff] [blame] | 10 | |
| 11 | /* PTE bits */ |
| Paul Mundt | 782bb5a | 2010-01-13 19:11:14 +0900 | [diff] [blame] | 12 | #define PTE_MAGNITUDE 2 /* 32-bit PTEs */ |
| Matt Fleming | b73c806 | 2009-11-25 22:00:08 +0000 | [diff] [blame] | 13 | |
| Paul Mundt | 782bb5a | 2010-01-13 19:11:14 +0900 | [diff] [blame] | 14 | #define PTE_SHIFT PAGE_SHIFT |
| 15 | #define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE) |
| Matt Fleming | b73c806 | 2009-11-25 22:00:08 +0000 | [diff] [blame] | 16 | |
| 17 | /* PGD bits */ |
| Paul Mundt | 782bb5a | 2010-01-13 19:11:14 +0900 | [diff] [blame] | 18 | #define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) |
| Matt Fleming | b73c806 | 2009-11-25 22:00:08 +0000 | [diff] [blame] | 19 | |
| Paul Mundt | 782bb5a | 2010-01-13 19:11:14 +0900 | [diff] [blame] | 20 | #define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE)) |
| Matt Fleming | b73c806 | 2009-11-25 22:00:08 +0000 | [diff] [blame] | 21 | #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) |
| 22 | |
| Paul Mundt | e44d6c4 | 2010-01-13 19:18:39 +0900 | [diff] [blame] | 23 | #endif /* __ASM_SH_PGTABLE_2LEVEL_H */ |