diff options
Diffstat (limited to 'include/asm-cris/pgtable.h')
| -rw-r--r-- | include/asm-cris/pgtable.h | 42 |
1 files changed, 9 insertions, 33 deletions
diff --git a/include/asm-cris/pgtable.h b/include/asm-cris/pgtable.h index f704294..a9143be 100644 --- a/include/asm-cris/pgtable.h +++ b/include/asm-cris/pgtable.h @@ -5,7 +5,8 @@ #ifndef _CRIS_PGTABLE_H #define _CRIS_PGTABLE_H -#include <asm-generic/4level-fixup.h> +#include <asm/page.h> +#include <asm-generic/pgtable-nopmd.h> #ifndef __ASSEMBLY__ #include <linux/config.h> @@ -41,22 +42,14 @@ extern void paging_init(void); * but the define is needed for a generic inline function.) */ #define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval) -#define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval) +#define set_pgu(pudptr, pudval) (*(pudptr) = pudval) -/* PMD_SHIFT determines the size of the area a second-level page table can +/* PGDIR_SHIFT determines the size of the area a second-level page table can * map. It is equal to the page size times the number of PTE's that fit in * a PMD page. A PTE is 4-bytes in CRIS. Hence the following number. */ -#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-2)) -#define PMD_SIZE (1UL << PMD_SHIFT) -#define PMD_MASK (~(PMD_SIZE-1)) - -/* PGDIR_SHIFT determines what a third-level page table entry can map. - * Since we fold into a two-level structure, this is the same as PMD_SHIFT. - */ - -#define PGDIR_SHIFT PMD_SHIFT +#define PGDIR_SHIFT (PAGE_SHIFT + (PAGE_SHIFT-2)) #define PGDIR_SIZE (1UL << PGDIR_SHIFT) #define PGDIR_MASK (~(PGDIR_SIZE-1)) @@ -67,7 +60,6 @@ extern void paging_init(void); * divide it by 4 (shift by 2). */ #define PTRS_PER_PTE (1UL << (PAGE_SHIFT-2)) -#define PTRS_PER_PMD 1 #define PTRS_PER_PGD (1UL << (PAGE_SHIFT-2)) /* calculate how many PGD entries a user-level program can use @@ -105,7 +97,7 @@ extern unsigned long empty_zero_page; #define pte_present(x) (pte_val(x) & _PAGE_PRESENT) #define pte_clear(mm,addr,xp) do { pte_val(*(xp)) = 0; } while (0) -#define pmd_none(x) (!pmd_val(x)) +#define pmd_none(x) (!pmd_val(x)) /* by removing the _PAGE_KERNEL bit from the comparision, the same pmd_bad * works for both _PAGE_TABLE and _KERNPG_TABLE pmd entries. */ @@ -116,16 +108,6 @@ extern unsigned long empty_zero_page; #ifndef __ASSEMBLY__ /* - * The "pgd_xxx()" functions here are trivial for a folded two-level - * setup: the pgd is never bad, and a pmd always exists (as it's folded - * into the pgd entry) - */ -extern inline int pgd_none(pgd_t pgd) { return 0; } -extern inline int pgd_bad(pgd_t pgd) { return 0; } -extern inline int pgd_present(pgd_t pgd) { return 1; } -extern inline void pgd_clear(pgd_t * pgdp) { } - -/* * The following only work if pte_present() is true. * Undefined behaviour if not.. */ @@ -275,7 +257,7 @@ extern inline void pmd_set(pmd_t * pmdp, pte_t * ptep) #define pmd_page_kernel(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK)) /* to find an entry in a page-table-directory. */ -#define pgd_index(address) ((address >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) +#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) /* to find an entry in a page-table-directory */ extern inline pgd_t * pgd_offset(struct mm_struct * mm, unsigned long address) @@ -286,12 +268,6 @@ extern inline pgd_t * pgd_offset(struct mm_struct * mm, unsigned long address) /* to find an entry in a kernel page-table-directory */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) -/* Find an entry in the second-level page table.. */ -extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address) -{ - return (pmd_t *) dir; -} - /* Find an entry in the third-level page table.. */ #define __pte_offset(address) \ (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) @@ -308,8 +284,6 @@ extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address) #define pte_ERROR(e) \ printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), pte_val(e)) -#define pmd_ERROR(e) \ - printk("%s:%d: bad pmd %p(%08lx).\n", __FILE__, __LINE__, &(e), pmd_val(e)) #define pgd_ERROR(e) \ printk("%s:%d: bad pgd %p(%08lx).\n", __FILE__, __LINE__, &(e), pgd_val(e)) @@ -348,5 +322,7 @@ extern inline void update_mmu_cache(struct vm_area_struct * vma, #define pte_to_pgoff(x) (pte_val(x) >> 6) #define pgoff_to_pte(x) __pte(((x) << 6) | _PAGE_FILE) +typedef pte_t *pte_addr_t; + #endif /* __ASSEMBLY__ */ #endif /* _CRIS_PGTABLE_H */ |
