1 #ifndef __ASM_SH_PGTABLE_PMD_H
2 #define __ASM_SH_PGTABLE_PMD_H
4 #include <asm-generic/pgtable-nopud.h>
7 * Some cores need a 3-level page table layout, for example when using
8 * 64-bit PTEs and 4K pages.
11 #define PTE_MAGNITUDE 3 /* 64-bit PTEs on extended mode SH-X2 TLB */
14 #define PGDIR_SHIFT 30
16 #define PTRS_PER_PGD 4
17 #define USER_PTRS_PER_PGD 2
20 #define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))
21 #define PMD_SIZE (1UL << PMD_SHIFT)
22 #define PMD_MASK (~(PMD_SIZE-1))
24 #define PTRS_PER_PMD ((1 << PGDIR_SHIFT) / PMD_SIZE)
26 #define pmd_ERROR(e) \
27 printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
29 typedef struct { unsigned long long pmd; } pmd_t;
30 #define pmd_val(x) ((x).pmd)
31 #define __pmd(x) ((pmd_t) { (x) } )
33 static inline unsigned long pud_page_vaddr(pud_t pud)
38 #define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
39 static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
41 return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
44 #define pud_none(x) (!pud_val(x))
45 #define pud_present(x) (pud_val(x))
46 #define pud_clear(xp) do { set_pud(xp, __pud(0)); } while (0)
47 #define pud_bad(x) (pud_val(x) & ~PAGE_MASK)
50 * (puds are folded into pgds so this doesn't get actually called,
51 * but the define is needed for a generic inline function.)
53 #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
55 #endif /* __ASM_SH_PGTABLE_PMD_H */