X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;ds=sidebyside;f=include%2Fasm-mips%2Fpgtable.h;h=582f56f42f0e0a32b7988cd3cf955bf022aa5108;hb=351336929ccf222ae38ff0cb7a8dd5fd5c6236a0;hp=be75cca20e8d8de7aab02dc4d5d07336020cf9a7;hpb=d9b8d0da404cf952a425d990c37c29c166eec954;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h index be75cca..582f56f 100644 --- a/include/asm-mips/pgtable.h +++ b/include/asm-mips/pgtable.h @@ -8,7 +8,6 @@ #ifndef _ASM_PGTABLE_H #define _ASM_PGTABLE_H -#include #ifdef CONFIG_32BIT #include #endif @@ -24,15 +23,15 @@ struct vm_area_struct; #define PAGE_NONE __pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT) #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ - PAGE_CACHABLE_DEFAULT) + _page_cachable_default) #define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ | \ - PAGE_CACHABLE_DEFAULT) + _page_cachable_default) #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ | \ - PAGE_CACHABLE_DEFAULT) + _page_cachable_default) #define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \ - _PAGE_GLOBAL | PAGE_CACHABLE_DEFAULT) + _PAGE_GLOBAL | _page_cachable_default) #define PAGE_USERIO __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ - PAGE_CACHABLE_DEFAULT) + _page_cachable_default) #define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \ __WRITEABLE | _PAGE_GLOBAL | _CACHE_UNCACHED) @@ -41,23 +40,30 @@ struct vm_area_struct; * read. Also, write permissions imply read permissions. This is the closest * we can get by reasonable means.. */ -#define __P000 PAGE_NONE -#define __P001 PAGE_READONLY -#define __P010 PAGE_COPY -#define __P011 PAGE_COPY -#define __P100 PAGE_READONLY -#define __P101 PAGE_READONLY -#define __P110 PAGE_COPY -#define __P111 PAGE_COPY - -#define __S000 PAGE_NONE -#define __S001 PAGE_READONLY -#define __S010 PAGE_SHARED -#define __S011 PAGE_SHARED -#define __S100 PAGE_READONLY -#define __S101 PAGE_READONLY -#define __S110 PAGE_SHARED -#define __S111 PAGE_SHARED + +/* + * Dummy values to fill the table in mmap.c + * The real values will be generated at runtime + */ +#define __P000 __pgprot(0) +#define __P001 __pgprot(0) +#define __P010 __pgprot(0) +#define __P011 __pgprot(0) +#define __P100 __pgprot(0) +#define __P101 __pgprot(0) +#define __P110 __pgprot(0) +#define __P111 __pgprot(0) + +#define __S000 __pgprot(0) +#define __S001 __pgprot(0) +#define __S010 __pgprot(0) +#define __S011 __pgprot(0) +#define __S100 __pgprot(0) +#define __S101 __pgprot(0) +#define __S110 __pgprot(0) +#define __S111 __pgprot(0) + +extern unsigned long _page_cachable_default; /* * ZERO_PAGE is a global shared page that is always zero; used @@ -68,17 +74,7 @@ extern unsigned long empty_zero_page; extern unsigned long zero_page_mask; #define ZERO_PAGE(vaddr) \ - (virt_to_page(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask))) - -#define __HAVE_ARCH_MOVE_PTE -#define move_pte(pte, prot, old_addr, new_addr) \ -({ \ - pte_t newpte = (pte); \ - if (pte_present(pte) && pfn_valid(pte_pfn(pte)) && \ - pte_page(pte) == ZERO_PAGE(old_addr)) \ - newpte = mk_pte(ZERO_PAGE(new_addr), (prot)); \ - newpte; \ -}) + (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))) extern void paging_init(void); @@ -86,11 +82,11 @@ extern void paging_init(void); * 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 pmd_phys(pmd) (pmd_val(pmd) - PAGE_OFFSET) +#define pmd_phys(pmd) virt_to_phys((void *)pmd_val(pmd)) #define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT)) -#define pmd_page_kernel(pmd) pmd_val(pmd) +#define pmd_page_vaddr(pmd) pmd_val(pmd) -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1) +#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) #define pte_none(pte) (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL)) #define pte_present(pte) ((pte).pte_low & _PAGE_PRESENT) @@ -114,7 +110,7 @@ static inline void set_pte(pte_t *ptep, pte_t pte) } } } -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { @@ -151,7 +147,7 @@ static inline void set_pte(pte_t *ptep, pte_t pteval) } #endif } -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { @@ -179,19 +175,21 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0) #endif -#define PGD_T_LOG2 ffz(~sizeof(pgd_t)) -#define PMD_T_LOG2 ffz(~sizeof(pmd_t)) -#define PTE_T_LOG2 ffz(~sizeof(pte_t)) +#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1) +#define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1) +#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1) -extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; +/* + * We used to declare this array with size but gcc 3.3 and older are not able + * to find that this expression is a constant, so the size is dropped. + */ +extern pgd_t swapper_pg_dir[]; /* * The following only work if pte_present() is true. * Undefined behaviour if not.. */ -static inline int pte_user(pte_t pte) { BUG(); return 0; } -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1) -static inline int pte_read(pte_t pte) { return pte.pte_low & _PAGE_READ; } +#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) static inline int pte_write(pte_t pte) { return pte.pte_low & _PAGE_WRITE; } static inline int pte_dirty(pte_t pte) { return pte.pte_low & _PAGE_MODIFIED; } static inline int pte_young(pte_t pte) { return pte.pte_low & _PAGE_ACCESSED; } @@ -204,13 +202,6 @@ static inline pte_t pte_wrprotect(pte_t pte) return pte; } -static inline pte_t pte_rdprotect(pte_t pte) -{ - pte.pte_low &= ~(_PAGE_READ | _PAGE_SILENT_READ); - pte.pte_high &= ~_PAGE_SILENT_READ; - return pte; -} - static inline pte_t pte_mkclean(pte_t pte) { pte.pte_low &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE); @@ -235,16 +226,6 @@ static inline pte_t pte_mkwrite(pte_t pte) return pte; } -static inline pte_t pte_mkread(pte_t pte) -{ - pte.pte_low |= _PAGE_READ; - if (pte.pte_low & _PAGE_ACCESSED) { - pte.pte_low |= _PAGE_SILENT_READ; - pte.pte_high |= _PAGE_SILENT_READ; - } - return pte; -} - static inline pte_t pte_mkdirty(pte_t pte) { pte.pte_low |= _PAGE_MODIFIED; @@ -264,7 +245,6 @@ static inline pte_t pte_mkyoung(pte_t pte) return pte; } #else -static inline int pte_read(pte_t pte) { return pte_val(pte) & _PAGE_READ; } static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; } static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; } static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } @@ -276,12 +256,6 @@ static inline pte_t pte_wrprotect(pte_t pte) return pte; } -static inline pte_t pte_rdprotect(pte_t pte) -{ - pte_val(pte) &= ~(_PAGE_READ | _PAGE_SILENT_READ); - return pte; -} - static inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE); @@ -302,14 +276,6 @@ static inline pte_t pte_mkwrite(pte_t pte) return pte; } -static inline pte_t pte_mkread(pte_t pte) -{ - pte_val(pte) |= _PAGE_READ; - if (pte_val(pte) & _PAGE_ACCESSED) - pte_val(pte) |= _PAGE_SILENT_READ; - return pte; -} - static inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= _PAGE_MODIFIED; @@ -350,7 +316,7 @@ static inline pgprot_t pgprot_noncached(pgprot_t _prot) */ #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1) +#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { pte.pte_low &= _PAGE_CHG_MASK; @@ -398,10 +364,6 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma, remap_pfn_range(vma, vaddr, pfn, size, prot) #endif -#define MK_IOSPACE_PFN(space, pfn) (pfn) -#define GET_IOSPACE(pfn) 0 -#define GET_PFN(pfn) (pfn) - #include /*