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1da177e4 LT |
1 | #ifndef _ASMARM_PAGE_H |
2 | #define _ASMARM_PAGE_H | |
3 | ||
1da177e4 LT |
4 | |
5 | #ifdef __KERNEL__ | |
6 | #ifndef __ASSEMBLY__ | |
7 | ||
8 | extern void __clear_user_page(void *p, unsigned long user); | |
9 | extern void __copy_user_page(void *to, const void *from, unsigned long user); | |
10 | extern void copy_page(void *to, const void *from); | |
11 | ||
12 | //FIXME these may be wrong on ARM26 | |
13 | #define clear_user_page(addr,vaddr,pg) \ | |
14 | do { \ | |
15 | preempt_disable(); \ | |
16 | __clear_user_page(addr, vaddr); \ | |
17 | preempt_enable(); \ | |
18 | } while (0) | |
19 | ||
20 | #define copy_user_page(to,from,vaddr,pg) \ | |
21 | do { \ | |
22 | preempt_disable(); \ | |
23 | __copy_user_page(to, from, vaddr); \ | |
24 | preempt_enable(); \ | |
25 | } while (0) | |
26 | ||
27 | #define clear_page(page) memzero((void *)(page), PAGE_SIZE) | |
28 | #define copy_page(to, from) __copy_user_page(to, from, 0); | |
29 | ||
30 | #undef STRICT_MM_TYPECHECKS | |
31 | ||
32 | #ifdef STRICT_MM_TYPECHECKS | |
33 | /* | |
34 | * These are used to make use of C type-checking.. | |
35 | */ | |
36 | typedef struct { unsigned long pgd; } pgd_t; | |
37 | typedef struct { unsigned long pte; } pte_t; | |
38 | typedef struct { unsigned long pmd; } pmd_t; | |
39 | typedef struct { unsigned long pgprot; } pgprot_t; | |
40 | ||
41 | #define pgd_val(x) ((x).pgd) | |
42 | #define pte_val(x) ((x).pte) | |
43 | #define pmd_val(x) ((x).pmd) | |
44 | #define pgprot_val(x) ((x).pgprot) | |
45 | ||
46 | #define __pte(x) ((pte_t) { (x) } ) | |
47 | #define __pmd(x) ((pmd_t) { (x) } ) | |
48 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
49 | ||
50 | #else | |
51 | /* | |
52 | * .. while these make it easier on the compiler | |
53 | */ | |
54 | typedef unsigned long pgd_t; | |
55 | typedef unsigned long pte_t; | |
56 | typedef unsigned long pmd_t; | |
57 | typedef unsigned long pgprot_t; | |
58 | ||
59 | //FIXME - should these cast to unsigned long? | |
60 | #define pgd_val(x) (x) | |
61 | #define pte_val(x) (x) | |
62 | #define pmd_val(x) (x) | |
63 | #define pgprot_val(x) (x) | |
64 | ||
65 | #define __pte(x) (x) | |
66 | #define __pmd(x) (x) | |
67 | #define __pgprot(x) (x) | |
68 | ||
69 | #endif /* STRICT_MM_TYPECHECKS */ | |
70 | #endif /* !__ASSEMBLY__ */ | |
71 | #endif /* __KERNEL__ */ | |
72 | ||
73 | /* PAGE_SHIFT determines the page size. This is configurable. */ | |
74 | #if defined(CONFIG_PAGESIZE_16) | |
75 | #define PAGE_SHIFT 14 /* 16K */ | |
76 | #else /* default */ | |
77 | #define PAGE_SHIFT 15 /* 32K */ | |
78 | #endif | |
79 | ||
80 | #define EXEC_PAGESIZE 32768 | |
81 | ||
82 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | |
83 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
84 | ||
85 | /* to align the pointer to the (next) page boundary */ | |
86 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
87 | ||
88 | #ifdef __KERNEL__ | |
89 | #ifndef __ASSEMBLY__ | |
90 | ||
1da177e4 LT |
91 | #include <asm/memory.h> |
92 | ||
93 | #endif /* !__ASSEMBLY__ */ | |
94 | ||
95 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
96 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
97 | ||
98 | #endif /* __KERNEL__ */ | |
99 | ||
fd4fd5aa SR |
100 | #include <asm-generic/page.h> |
101 | ||
1da177e4 | 102 | #endif |