diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 8ee9dce10b83..0ebe1165ba0a 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -299,72 +299,8 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; #define set_pgd(pgd,pgdp) do { } while (0) -#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) -#define pfn_pte(pfn,prot) (__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))) - -#define pte_none(pte) (!pte_val(pte)) -#define pte_clear(mm,addr,ptep) set_pte_ext(ptep, __pte(0), 0) -#define pte_page(pte) (pfn_to_page(pte_pfn(pte))) -#define pte_offset_kernel(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr)) - -#define pte_offset_map(dir,addr) (__pte_map(dir) + __pte_index(addr)) -#define pte_unmap(pte) __pte_unmap(pte) - -#ifndef CONFIG_HIGHPTE -#define __pte_map(dir) pmd_page_vaddr(*(dir)) -#define __pte_unmap(pte) do { } while (0) -#else -#define __pte_map(dir) ((pte_t *)kmap_atomic(pmd_page(*(dir))) + PTRS_PER_PTE) -#define __pte_unmap(pte) kunmap_atomic((pte - PTRS_PER_PTE)) -#endif - -#define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,pte,ext) - -#if __LINUX_ARM_ARCH__ < 6 -static inline void __sync_icache_dcache(pte_t pteval) -{ -} -#else -extern void __sync_icache_dcache(pte_t pteval); -#endif - -static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t pteval) -{ - if (addr >= TASK_SIZE) - set_pte_ext(ptep, pteval, 0); - else { - __sync_icache_dcache(pteval); - set_pte_ext(ptep, pteval, PTE_EXT_NG); - } -} - -/* - * The following only work if pte_present() is true. - * Undefined behaviour if not.. - */ -#define pte_present(pte) (pte_val(pte) & L_PTE_PRESENT) -#define pte_write(pte) (pte_val(pte) & L_PTE_WRITE) -#define pte_dirty(pte) (pte_val(pte) & L_PTE_DIRTY) -#define pte_young(pte) (pte_val(pte) & L_PTE_YOUNG) -#define pte_exec(pte) (pte_val(pte) & L_PTE_EXEC) -#define pte_special(pte) (0) - -#define pte_present_user(pte) \ - ((pte_val(pte) & (L_PTE_PRESENT | L_PTE_USER)) == \ - (L_PTE_PRESENT | L_PTE_USER)) - -#define PTE_BIT_FUNC(fn,op) \ -static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; } - -PTE_BIT_FUNC(wrprotect, &= ~L_PTE_WRITE); -PTE_BIT_FUNC(mkwrite, |= L_PTE_WRITE); -PTE_BIT_FUNC(mkclean, &= ~L_PTE_DIRTY); -PTE_BIT_FUNC(mkdirty, |= L_PTE_DIRTY); -PTE_BIT_FUNC(mkold, &= ~L_PTE_YOUNG); -PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG); - -static inline pte_t pte_mkspecial(pte_t pte) { return pte; } +/* Find an entry in the second-level page table.. */ +#define pmd_offset(dir, addr) ((pmd_t *)(dir)) #define pmd_none(pmd) (!pmd_val(pmd)) #define pmd_present(pmd) (pmd_val(pmd)) @@ -399,17 +335,73 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd) /* we don't need complex calculations here as the pmd is folded into the pgd */ #define pmd_addr_end(addr,end) (end) -/* - * Conversion functions: convert a page and protection to a page entry, - * and a page entry and page directory to the page they refer to. - */ -#define mk_pte(page,prot) pfn_pte(page_to_pfn(page),prot) -/* Find an entry in the second-level page table.. */ -#define pmd_offset(dir, addr) ((pmd_t *)(dir)) +#ifndef CONFIG_HIGHPTE +#define __pte_map(pmd) pmd_page_vaddr(*(pmd)) +#define __pte_unmap(pte) do { } while (0) +#else +#define __pte_map(pmd) ((pte_t *)kmap_atomic(pmd_page(*(pmd))) + PTRS_PER_PTE) +#define __pte_unmap(pte) kunmap_atomic((pte - PTRS_PER_PTE)) +#endif -/* Find an entry in the third-level page table.. */ -#define __pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) +#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) + +#define pte_offset_kernel(pmd,addr) (pmd_page_vaddr(*(pmd)) + pte_index(addr)) + +#define pte_offset_map(pmd,addr) (__pte_map(pmd) + pte_index(addr)) +#define pte_unmap(pte) __pte_unmap(pte) + +#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) +#define pfn_pte(pfn,prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) + +#define pte_page(pte) pfn_to_page(pte_pfn(pte)) +#define mk_pte(page,prot) pfn_pte(page_to_pfn(page), prot) + +#define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,pte,ext) +#define pte_clear(mm,addr,ptep) set_pte_ext(ptep, __pte(0), 0) + +#if __LINUX_ARM_ARCH__ < 6 +static inline void __sync_icache_dcache(pte_t pteval) +{ +} +#else +extern void __sync_icache_dcache(pte_t pteval); +#endif + +static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pteval) +{ + if (addr >= TASK_SIZE) + set_pte_ext(ptep, pteval, 0); + else { + __sync_icache_dcache(pteval); + set_pte_ext(ptep, pteval, PTE_EXT_NG); + } +} + +#define pte_none(pte) (!pte_val(pte)) +#define pte_present(pte) (pte_val(pte) & L_PTE_PRESENT) +#define pte_write(pte) (pte_val(pte) & L_PTE_WRITE) +#define pte_dirty(pte) (pte_val(pte) & L_PTE_DIRTY) +#define pte_young(pte) (pte_val(pte) & L_PTE_YOUNG) +#define pte_exec(pte) (pte_val(pte) & L_PTE_EXEC) +#define pte_special(pte) (0) + +#define pte_present_user(pte) \ + ((pte_val(pte) & (L_PTE_PRESENT | L_PTE_USER)) == \ + (L_PTE_PRESENT | L_PTE_USER)) + +#define PTE_BIT_FUNC(fn,op) \ +static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; } + +PTE_BIT_FUNC(wrprotect, &= ~L_PTE_WRITE); +PTE_BIT_FUNC(mkwrite, |= L_PTE_WRITE); +PTE_BIT_FUNC(mkclean, &= ~L_PTE_DIRTY); +PTE_BIT_FUNC(mkdirty, |= L_PTE_DIRTY); +PTE_BIT_FUNC(mkold, &= ~L_PTE_YOUNG); +PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG); + +static inline pte_t pte_mkspecial(pte_t pte) { return pte; } static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) {