diff options
Diffstat (limited to 'arch/mips/include/asm/pgtable-bits.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable-bits.h | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/arch/mips/include/asm/pgtable-bits.h b/arch/mips/include/asm/pgtable-bits.h index 29ba35954e2e..ca11f14f40a3 100644 --- a/arch/mips/include/asm/pgtable-bits.h +++ b/arch/mips/include/asm/pgtable-bits.h @@ -37,34 +37,36 @@ /* * The following bits are directly used by the TLB hardware */ -#define _PAGE_R4KBUG (1 << 0) /* workaround for r4k bug */ -#define _PAGE_GLOBAL (1 << 0) -#define _PAGE_VALID_SHIFT 1 +#define _PAGE_GLOBAL_SHIFT 0 +#define _PAGE_GLOBAL (1 << _PAGE_GLOBAL_SHIFT) +#define _PAGE_VALID_SHIFT (_PAGE_GLOBAL_SHIFT + 1) #define _PAGE_VALID (1 << _PAGE_VALID_SHIFT) -#define _PAGE_SILENT_READ (1 << 1) /* synonym */ -#define _PAGE_DIRTY_SHIFT 2 -#define _PAGE_DIRTY (1 << _PAGE_DIRTY_SHIFT) /* The MIPS dirty bit */ -#define _PAGE_SILENT_WRITE (1 << 2) -#define _CACHE_SHIFT 3 -#define _CACHE_MASK (7 << 3) +#define _PAGE_DIRTY_SHIFT (_PAGE_VALID_SHIFT + 1) +#define _PAGE_DIRTY (1 << _PAGE_DIRTY_SHIFT) +#define _CACHE_SHIFT (_PAGE_DIRTY_SHIFT + 1) +#define _CACHE_MASK (7 << _CACHE_SHIFT) /* * The following bits are implemented in software * * _PAGE_FILE semantics: set:pagecache unset:swap */ -#define _PAGE_PRESENT_SHIFT 6 +#define _PAGE_PRESENT_SHIFT (_CACHE_SHIFT + 3) #define _PAGE_PRESENT (1 << _PAGE_PRESENT_SHIFT) -#define _PAGE_READ_SHIFT 7 +#define _PAGE_READ_SHIFT (_PAGE_PRESENT_SHIFT + 1) #define _PAGE_READ (1 << _PAGE_READ_SHIFT) -#define _PAGE_WRITE_SHIFT 8 +#define _PAGE_WRITE_SHIFT (_PAGE_READ_SHIFT + 1) #define _PAGE_WRITE (1 << _PAGE_WRITE_SHIFT) -#define _PAGE_ACCESSED_SHIFT 9 +#define _PAGE_ACCESSED_SHIFT (_PAGE_WRITE_SHIFT + 1) #define _PAGE_ACCESSED (1 << _PAGE_ACCESSED_SHIFT) -#define _PAGE_MODIFIED_SHIFT 10 +#define _PAGE_MODIFIED_SHIFT (_PAGE_ACCESSED_SHIFT + 1) #define _PAGE_MODIFIED (1 << _PAGE_MODIFIED_SHIFT) -#define _PAGE_FILE (1 << 10) +#define _PAGE_SILENT_READ _PAGE_VALID +#define _PAGE_SILENT_WRITE _PAGE_DIRTY +#define _PAGE_FILE _PAGE_MODIFIED + +#define _PFN_SHIFT (PAGE_SHIFT - 12 + _CACHE_SHIFT + 3) #elif defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) |