bonding: fix rx_handler locking
[linux/fpc-iii.git] / arch / sh / include / asm / pgtable-3level.h
blob249a985d96482e54bb604daaf129552ba8835257
1 #ifndef __ASM_SH_PGTABLE_3LEVEL_H
2 #define __ASM_SH_PGTABLE_3LEVEL_H
4 #include <asm-generic/pgtable-nopud.h>
6 /*
7 * Some cores need a 3-level page table layout, for example when using
8 * 64-bit PTEs and 4K pages.
9 */
10 #define PAGETABLE_LEVELS 3
12 #define PTE_MAGNITUDE 3 /* 64-bit PTEs on SH-X2 TLB */
14 /* PGD bits */
15 #define PGDIR_SHIFT 30
17 #define PTRS_PER_PGD 4
18 #define USER_PTRS_PER_PGD 2
20 /* PMD bits */
21 #define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))
22 #define PMD_SIZE (1UL << PMD_SHIFT)
23 #define PMD_MASK (~(PMD_SIZE-1))
25 #define PTRS_PER_PMD ((1 << PGDIR_SHIFT) / PMD_SIZE)
27 #define pmd_ERROR(e) \
28 printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
30 typedef struct { unsigned long long pmd; } pmd_t;
31 #define pmd_val(x) ((x).pmd)
32 #define __pmd(x) ((pmd_t) { (x) } )
34 static inline unsigned long pud_page_vaddr(pud_t pud)
36 return pud_val(pud);
39 #define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
40 static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
42 return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
45 #define pud_none(x) (!pud_val(x))
46 #define pud_present(x) (pud_val(x))
47 #define pud_clear(xp) do { set_pud(xp, __pud(0)); } while (0)
48 #define pud_bad(x) (pud_val(x) & ~PAGE_MASK)
51 * (puds are folded into pgds so this doesn't get actually called,
52 * but the define is needed for a generic inline function.)
54 #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
56 #endif /* __ASM_SH_PGTABLE_3LEVEL_H */