diff options
Diffstat (limited to 'include/asm-x86/page_32.h')
| -rw-r--r-- | include/asm-x86/page_32.h | 247 |
1 files changed, 74 insertions, 173 deletions
diff --git a/include/asm-x86/page_32.h b/include/asm-x86/page_32.h index 80ecc66b6d86..a6fd10f230d2 100644 --- a/include/asm-x86/page_32.h +++ b/include/asm-x86/page_32.h @@ -1,206 +1,107 @@ -#ifndef _I386_PAGE_H -#define _I386_PAGE_H - -/* PAGE_SHIFT determines the page size */ -#define PAGE_SHIFT 12 -#define PAGE_SIZE (1UL << PAGE_SHIFT) -#define PAGE_MASK (~(PAGE_SIZE-1)) - -#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1)) -#define LARGE_PAGE_SIZE (1UL << PMD_SHIFT) - -#ifdef __KERNEL__ -#ifndef __ASSEMBLY__ - -#ifdef CONFIG_X86_USE_3DNOW - -#include <asm/mmx.h> - -#define clear_page(page) mmx_clear_page((void *)(page)) -#define copy_page(to,from) mmx_copy_page(to,from) - -#else +#ifndef _ASM_X86_PAGE_32_H +#define _ASM_X86_PAGE_32_H /* - * On older X86 processors it's not a win to use MMX here it seems. - * Maybe the K6-III ? - */ - -#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) -#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE) - -#endif - -#define clear_user_page(page, vaddr, pg) clear_page(page) -#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) - -#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ - alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) -#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE - -/* - * These are used to make use of C type-checking.. + * This handles the memory map. + * + * A __PAGE_OFFSET of 0xC0000000 means that the kernel has + * a virtual address space of one gigabyte, which limits the + * amount of physical memory you can use to about 950MB. + * + * If you want more physical memory than this then see the CONFIG_HIGHMEM4G + * and CONFIG_HIGHMEM64G options in the kernel configuration. */ -extern int nx_enabled; +#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) #ifdef CONFIG_X86_PAE -typedef struct { unsigned long pte_low, pte_high; } pte_t; -typedef struct { unsigned long long pmd; } pmd_t; -typedef struct { unsigned long long pgd; } pgd_t; -typedef struct { unsigned long long pgprot; } pgprot_t; +#define __PHYSICAL_MASK_SHIFT 36 +#define __VIRTUAL_MASK_SHIFT 32 +#define PAGETABLE_LEVELS 3 -static inline unsigned long long native_pgd_val(pgd_t pgd) -{ - return pgd.pgd; -} - -static inline unsigned long long native_pmd_val(pmd_t pmd) -{ - return pmd.pmd; -} - -static inline unsigned long long native_pte_val(pte_t pte) -{ - return pte.pte_low | ((unsigned long long)pte.pte_high << 32); -} - -static inline pgd_t native_make_pgd(unsigned long long val) -{ - return (pgd_t) { val }; -} - -static inline pmd_t native_make_pmd(unsigned long long val) -{ - return (pmd_t) { val }; -} - -static inline pte_t native_make_pte(unsigned long long val) -{ - return (pte_t) { .pte_low = val, .pte_high = (val >> 32) } ; -} - -#ifndef CONFIG_PARAVIRT -#define pmd_val(x) native_pmd_val(x) -#define __pmd(x) native_make_pmd(x) -#endif - -#define HPAGE_SHIFT 21 -#include <asm-generic/pgtable-nopud.h> +#ifndef __ASSEMBLY__ +typedef u64 pteval_t; +typedef u64 pmdval_t; +typedef u64 pudval_t; +typedef u64 pgdval_t; +typedef u64 pgprotval_t; +typedef u64 phys_addr_t; + +typedef union { + struct { + unsigned long pte_low, pte_high; + }; + pteval_t pte; +} pte_t; +#endif /* __ASSEMBLY__ + */ #else /* !CONFIG_X86_PAE */ -typedef struct { unsigned long pte_low; } pte_t; -typedef struct { unsigned long pgd; } pgd_t; -typedef struct { unsigned long pgprot; } pgprot_t; -#define boot_pte_t pte_t /* or would you rather have a typedef */ - -static inline unsigned long native_pgd_val(pgd_t pgd) -{ - return pgd.pgd; -} +#define __PHYSICAL_MASK_SHIFT 32 +#define __VIRTUAL_MASK_SHIFT 32 +#define PAGETABLE_LEVELS 2 -static inline unsigned long native_pte_val(pte_t pte) -{ - return pte.pte_low; -} - -static inline pgd_t native_make_pgd(unsigned long val) -{ - return (pgd_t) { val }; -} +#ifndef __ASSEMBLY__ +typedef unsigned long pteval_t; +typedef unsigned long pmdval_t; +typedef unsigned long pudval_t; +typedef unsigned long pgdval_t; +typedef unsigned long pgprotval_t; +typedef unsigned long phys_addr_t; -static inline pte_t native_make_pte(unsigned long val) -{ - return (pte_t) { .pte_low = val }; -} +typedef union { pteval_t pte, pte_low; } pte_t; +typedef pte_t boot_pte_t; -#define HPAGE_SHIFT 22 -#include <asm-generic/pgtable-nopmd.h> +#endif /* __ASSEMBLY__ */ #endif /* CONFIG_X86_PAE */ -#define PTE_MASK PAGE_MASK - #ifdef CONFIG_HUGETLB_PAGE -#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) -#define HPAGE_MASK (~(HPAGE_SIZE - 1)) -#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA #endif -#define pgprot_val(x) ((x).pgprot) -#define __pgprot(x) ((pgprot_t) { (x) } ) - -#ifndef CONFIG_PARAVIRT -#define pgd_val(x) native_pgd_val(x) -#define __pgd(x) native_make_pgd(x) -#define pte_val(x) native_pte_val(x) -#define __pte(x) native_make_pte(x) -#endif - -#endif /* !__ASSEMBLY__ */ - -/* to align the pointer to the (next) page boundary */ -#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) - -/* - * This handles the memory map.. We could make this a config - * option, but too many people screw it up, and too few need - * it. - * - * A __PAGE_OFFSET of 0xC0000000 means that the kernel has - * a virtual address space of one gigabyte, which limits the - * amount of physical memory you can use to about 950MB. - * - * If you want more physical memory than this then see the CONFIG_HIGHMEM4G - * and CONFIG_HIGHMEM64G options in the kernel configuration. - */ - #ifndef __ASSEMBLY__ +#define __phys_addr(x) ((x)-PAGE_OFFSET) +#define __phys_reloc_hide(x) RELOC_HIDE((x), 0) + +#ifdef CONFIG_FLATMEM +#define pfn_valid(pfn) ((pfn) < max_mapnr) +#endif /* CONFIG_FLATMEM */ -struct vm_area_struct; +extern int nx_enabled; /* * This much address space is reserved for vmalloc() and iomap() * as well as fixmap mappings. */ extern unsigned int __VMALLOC_RESERVE; - extern int sysctl_legacy_va_layout; -extern int page_is_ram(unsigned long pagenr); - -#endif /* __ASSEMBLY__ */ - -#ifdef __ASSEMBLY__ -#define __PAGE_OFFSET CONFIG_PAGE_OFFSET -#else -#define __PAGE_OFFSET ((unsigned long)CONFIG_PAGE_OFFSET) -#endif - - -#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) #define VMALLOC_RESERVE ((unsigned long)__VMALLOC_RESERVE) #define MAXMEM (-__PAGE_OFFSET-__VMALLOC_RESERVE) -#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) -/* __pa_symbol should be used for C visible symbols. - This seems to be the official gcc blessed way to do such arithmetic. */ -#define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x),0)) -#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#ifdef CONFIG_FLATMEM -#define pfn_valid(pfn) ((pfn) < max_mapnr) -#endif /* CONFIG_FLATMEM */ -#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) +#ifdef CONFIG_X86_USE_3DNOW +#include <asm/mmx.h> + +static inline void clear_page(void *page) +{ + mmx_clear_page(page); +} -#define VM_DATA_DEFAULT_FLAGS \ - (VM_READ | VM_WRITE | \ - ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +static inline void copy_page(void *to, void *from) +{ + mmx_copy_page(to, from); +} +#else /* !CONFIG_X86_USE_3DNOW */ +#include <linux/string.h> -#include <asm-generic/memory_model.h> -#include <asm-generic/page.h> +static inline void clear_page(void *page) +{ + memset(page, 0, PAGE_SIZE); +} -#define __HAVE_ARCH_GATE_AREA 1 -#endif /* __KERNEL__ */ +static inline void copy_page(void *to, void *from) +{ + memcpy(to, from, PAGE_SIZE); +} +#endif /* CONFIG_X86_3DNOW */ +#endif /* !__ASSEMBLY__ */ -#endif /* _I386_PAGE_H */ +#endif /* _ASM_X86_PAGE_32_H */ |