Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _ALPHA_PAGE_H |
2 | #define _ALPHA_PAGE_H | |
3 | ||
7f9d77d7 DW |
4 | #ifdef __KERNEL__ |
5 | ||
b2b5d37d | 6 | #include <linux/const.h> |
1da177e4 LT |
7 | #include <asm/pal.h> |
8 | ||
9 | /* PAGE_SHIFT determines the page size */ | |
10 | #define PAGE_SHIFT 13 | |
b2b5d37d | 11 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
1da177e4 LT |
12 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
13 | ||
1da177e4 LT |
14 | #ifndef __ASSEMBLY__ |
15 | ||
16 | #define STRICT_MM_TYPECHECKS | |
17 | ||
18 | extern void clear_page(void *page); | |
19 | #define clear_user_page(page, vaddr, pg) clear_page(page) | |
20 | ||
769848c0 MG |
21 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ |
22 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vmaddr) | |
1da177e4 LT |
23 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
24 | ||
25 | extern void copy_page(void * _to, void * _from); | |
26 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) | |
27 | ||
28 | #ifdef STRICT_MM_TYPECHECKS | |
29 | /* | |
30 | * These are used to make use of C type-checking.. | |
31 | */ | |
32 | typedef struct { unsigned long pte; } pte_t; | |
33 | typedef struct { unsigned long pmd; } pmd_t; | |
34 | typedef struct { unsigned long pgd; } pgd_t; | |
35 | typedef struct { unsigned long pgprot; } pgprot_t; | |
36 | ||
37 | #define pte_val(x) ((x).pte) | |
38 | #define pmd_val(x) ((x).pmd) | |
39 | #define pgd_val(x) ((x).pgd) | |
40 | #define pgprot_val(x) ((x).pgprot) | |
41 | ||
42 | #define __pte(x) ((pte_t) { (x) } ) | |
43 | #define __pmd(x) ((pmd_t) { (x) } ) | |
44 | #define __pgd(x) ((pgd_t) { (x) } ) | |
45 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
46 | ||
47 | #else | |
48 | /* | |
49 | * .. while these make it easier on the compiler | |
50 | */ | |
51 | typedef unsigned long pte_t; | |
52 | typedef unsigned long pmd_t; | |
53 | typedef unsigned long pgd_t; | |
54 | typedef unsigned long pgprot_t; | |
55 | ||
56 | #define pte_val(x) (x) | |
57 | #define pmd_val(x) (x) | |
58 | #define pgd_val(x) (x) | |
59 | #define pgprot_val(x) (x) | |
60 | ||
61 | #define __pte(x) (x) | |
62 | #define __pgd(x) (x) | |
63 | #define __pgprot(x) (x) | |
64 | ||
65 | #endif /* STRICT_MM_TYPECHECKS */ | |
66 | ||
1da177e4 LT |
67 | #ifdef USE_48_BIT_KSEG |
68 | #define PAGE_OFFSET 0xffff800000000000UL | |
69 | #else | |
70 | #define PAGE_OFFSET 0xfffffc0000000000UL | |
71 | #endif | |
72 | ||
73 | #else | |
74 | ||
75 | #ifdef USE_48_BIT_KSEG | |
76 | #define PAGE_OFFSET 0xffff800000000000 | |
77 | #else | |
78 | #define PAGE_OFFSET 0xfffffc0000000000 | |
79 | #endif | |
80 | ||
81 | #endif /* !__ASSEMBLY__ */ | |
82 | ||
83 | /* to align the pointer to the (next) page boundary */ | |
84 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
85 | ||
86 | #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) | |
87 | #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) | |
88 | #ifndef CONFIG_DISCONTIGMEM | |
1da177e4 LT |
89 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
90 | ||
91 | #define pfn_valid(pfn) ((pfn) < max_mapnr) | |
92 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
93 | #endif /* CONFIG_DISCONTIGMEM */ | |
94 | ||
95 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
96 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
1da177e4 | 97 | |
1c05dda2 | 98 | #include <asm-generic/memory_model.h> |
fd4fd5aa SR |
99 | #include <asm-generic/page.h> |
100 | ||
7f9d77d7 | 101 | #endif /* __KERNEL__ */ |
1da177e4 | 102 | #endif /* _ALPHA_PAGE_H */ |