projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ALPHA_PAGE_H |
| 2 | #define _ALPHA_PAGE_H | |
| 3 | ||
| 7f9d77d7 DW |
4 | #ifdef __KERNEL__ |
| 5 | ||
| 1da177e4 LT |
6 | #include <asm/pal.h> |
| 7 | ||
| 8 | /* PAGE_SHIFT determines the page size */ | |
| 9 | #define PAGE_SHIFT 13 | |
| 10 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | |
| 11 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
| 12 | ||
| 1da177e4 LT |
13 | #ifndef __ASSEMBLY__ |
| 14 | ||
| 15 | #define STRICT_MM_TYPECHECKS | |
| 16 | ||
| 17 | extern void clear_page(void *page); | |
| 18 | #define clear_user_page(page, vaddr, pg) clear_page(page) | |
| 19 | ||
| 769848c0 MG |
20 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ |
| 21 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vmaddr) | |
| 1da177e4 LT |
22 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
| 23 | ||
| 24 | extern void copy_page(void * _to, void * _from); | |
| 25 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) | |
| 26 | ||
| 27 | #ifdef STRICT_MM_TYPECHECKS | |
| 28 | /* | |
| 29 | * These are used to make use of C type-checking.. | |
| 30 | */ | |
| 31 | typedef struct { unsigned long pte; } pte_t; | |
| 32 | typedef struct { unsigned long pmd; } pmd_t; | |
| 33 | typedef struct { unsigned long pgd; } pgd_t; | |
| 34 | typedef struct { unsigned long pgprot; } pgprot_t; | |
| 35 | ||
| 36 | #define pte_val(x) ((x).pte) | |
| 37 | #define pmd_val(x) ((x).pmd) | |
| 38 | #define pgd_val(x) ((x).pgd) | |
| 39 | #define pgprot_val(x) ((x).pgprot) | |
| 40 | ||
| 41 | #define __pte(x) ((pte_t) { (x) } ) | |
| 42 | #define __pmd(x) ((pmd_t) { (x) } ) | |
| 43 | #define __pgd(x) ((pgd_t) { (x) } ) | |
| 44 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
| 45 | ||
| 46 | #else | |
| 47 | /* | |
| 48 | * .. while these make it easier on the compiler | |
| 49 | */ | |
| 50 | typedef unsigned long pte_t; | |
| 51 | typedef unsigned long pmd_t; | |
| 52 | typedef unsigned long pgd_t; | |
| 53 | typedef unsigned long pgprot_t; | |
| 54 | ||
| 55 | #define pte_val(x) (x) | |
| 56 | #define pmd_val(x) (x) | |
| 57 | #define pgd_val(x) (x) | |
| 58 | #define pgprot_val(x) (x) | |
| 59 | ||
| 60 | #define __pte(x) (x) | |
| 61 | #define __pgd(x) (x) | |
| 62 | #define __pgprot(x) (x) | |
| 63 | ||
| 64 | #endif /* STRICT_MM_TYPECHECKS */ | |
| 65 | ||
| 1da177e4 LT |
66 | #ifdef USE_48_BIT_KSEG |
| 67 | #define PAGE_OFFSET 0xffff800000000000UL | |
| 68 | #else | |
| 69 | #define PAGE_OFFSET 0xfffffc0000000000UL | |
| 70 | #endif | |
| 71 | ||
| 72 | #else | |
| 73 | ||
| 74 | #ifdef USE_48_BIT_KSEG | |
| 75 | #define PAGE_OFFSET 0xffff800000000000 | |
| 76 | #else | |
| 77 | #define PAGE_OFFSET 0xfffffc0000000000 | |
| 78 | #endif | |
| 79 | ||
| 80 | #endif /* !__ASSEMBLY__ */ | |
| 81 | ||
| 82 | /* to align the pointer to the (next) page boundary */ | |
| 83 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
| 84 | ||
| 85 | #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) | |
| 86 | #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) | |
| 87 | #ifndef CONFIG_DISCONTIGMEM | |
| 1da177e4 LT |
88 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
| 89 | ||
| 90 | #define pfn_valid(pfn) ((pfn) < max_mapnr) | |
| 91 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
| 92 | #endif /* CONFIG_DISCONTIGMEM */ | |
| 93 | ||
| 94 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
| 95 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
| 1da177e4 | 96 | |
| 1c05dda2 | 97 | #include <asm-generic/memory_model.h> |
| fd4fd5aa SR |
98 | #include <asm-generic/page.h> |
| 99 | ||
| 7f9d77d7 | 100 | #endif /* __KERNEL__ */ |
| 1da177e4 | 101 | #endif /* _ALPHA_PAGE_H */ |