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author | H. Peter Anvin <hpa@zytor.com> | 2008-09-04 08:08:42 -0700 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2008-09-04 08:08:42 -0700 |
commit | 7203781c98ad9147564d327de6f6513ad8fc0f4e (patch) | |
tree | 5c29a2a04a626bf08a0d56fd8a0068b3c92ad284 /arch/alpha/include/asm/page.h | |
parent | 671eef85a3e885dff4ce210d8774ad50a91d5967 (diff) | |
parent | af2e1f276ff08f17192411ea3b71c13a758dfe12 (diff) |
Merge branch 'x86/cpu' into x86/core
Conflicts:
arch/x86/kernel/cpu/feature_names.c
include/asm-x86/cpufeature.h
Diffstat (limited to 'arch/alpha/include/asm/page.h')
-rw-r--r-- | arch/alpha/include/asm/page.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/page.h b/arch/alpha/include/asm/page.h new file mode 100644 index 00000000000..0995f9d1341 --- /dev/null +++ b/arch/alpha/include/asm/page.h @@ -0,0 +1,98 @@ +#ifndef _ALPHA_PAGE_H +#define _ALPHA_PAGE_H + +#include <linux/const.h> +#include <asm/pal.h> + +/* PAGE_SHIFT determines the page size */ +#define PAGE_SHIFT 13 +#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + +#ifndef __ASSEMBLY__ + +#define STRICT_MM_TYPECHECKS + +extern void clear_page(void *page); +#define clear_user_page(page, vaddr, pg) clear_page(page) + +#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ + alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vmaddr) +#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE + +extern void copy_page(void * _to, void * _from); +#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) + +#ifdef STRICT_MM_TYPECHECKS +/* + * These are used to make use of C type-checking.. + */ +typedef struct { unsigned long pte; } pte_t; +typedef struct { unsigned long pmd; } pmd_t; +typedef struct { unsigned long pgd; } pgd_t; +typedef struct { unsigned long pgprot; } pgprot_t; + +#define pte_val(x) ((x).pte) +#define pmd_val(x) ((x).pmd) +#define pgd_val(x) ((x).pgd) +#define pgprot_val(x) ((x).pgprot) + +#define __pte(x) ((pte_t) { (x) } ) +#define __pmd(x) ((pmd_t) { (x) } ) +#define __pgd(x) ((pgd_t) { (x) } ) +#define __pgprot(x) ((pgprot_t) { (x) } ) + +#else +/* + * .. while these make it easier on the compiler + */ +typedef unsigned long pte_t; +typedef unsigned long pmd_t; +typedef unsigned long pgd_t; +typedef unsigned long pgprot_t; + +#define pte_val(x) (x) +#define pmd_val(x) (x) +#define pgd_val(x) (x) +#define pgprot_val(x) (x) + +#define __pte(x) (x) +#define __pgd(x) (x) +#define __pgprot(x) (x) + +#endif /* STRICT_MM_TYPECHECKS */ + +typedef struct page *pgtable_t; + +#ifdef USE_48_BIT_KSEG +#define PAGE_OFFSET 0xffff800000000000UL +#else +#define PAGE_OFFSET 0xfffffc0000000000UL +#endif + +#else + +#ifdef USE_48_BIT_KSEG +#define PAGE_OFFSET 0xffff800000000000 +#else +#define PAGE_OFFSET 0xfffffc0000000000 +#endif + +#endif /* !__ASSEMBLY__ */ + +#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) +#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) +#ifndef CONFIG_DISCONTIGMEM +#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) + +#define pfn_valid(pfn) ((pfn) < max_mapnr) +#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) +#endif /* CONFIG_DISCONTIGMEM */ + +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#include <asm-generic/memory_model.h> +#include <asm-generic/page.h> + +#endif /* _ALPHA_PAGE_H */ |