1 #ifndef _ASMARM_PAGE_H
2 #define _ASMARM_PAGE_H
3
4 #include <asm/proc/page.h>
5
6 #define PAGE_SIZE (1UL << PAGE_SHIFT)
7 #define PAGE_MASK (~(PAGE_SIZE-1))
8
9 #ifdef __KERNEL__
10 #ifndef __ASSEMBLY__
11
12 #define STRICT_MM_TYPECHECKS
13
14 #define clear_page(page) memzero((void *)(page), PAGE_SIZE)
15 extern void copy_page(void *to, void *from);
16
17 #define clear_user_page(page, vaddr) clear_page(page)
18 #define copy_user_page(to, from, vaddr) copy_page(to, from)
19
20 #ifdef STRICT_MM_TYPECHECKS
21 /*
22 * These are used to make use of C type-checking..
23 */
24 typedef struct { unsigned long pte; } pte_t;
25 typedef struct { unsigned long pmd; } pmd_t;
26 typedef struct { unsigned long pgd; } pgd_t;
27 typedef struct { unsigned long pgprot; } pgprot_t;
28
29 #define pte_val(x) ((x).pte)
30 #define pmd_val(x) ((x).pmd)
31 #define pgd_val(x) ((x).pgd)
32 #define pgprot_val(x) ((x).pgprot)
33
34 #define __pte(x) ((pte_t) { (x) } )
35 #define __pmd(x) ((pmd_t) { (x) } )
36 #define __pgd(x) ((pgd_t) { (x) } )
37 #define __pgprot(x) ((pgprot_t) { (x) } )
38
39 #else
40 /*
41 * .. while these make it easier on the compiler
42 */
43 typedef unsigned long pte_t;
44 typedef unsigned long pmd_t;
45 typedef unsigned long pgd_t;
46 typedef unsigned long pgprot_t;
47
48 #define pte_val(x) (x)
49 #define pmd_val(x) (x)
50 #define pgd_val(x) (x)
51 #define pgprot_val(x) (x)
52
53 #define __pte(x) (x)
54 #define __pmd(x) (x)
55 #define __pgd(x) (x)
56 #define __pgprot(x) (x)
57
58 #endif
59 #endif /* !__ASSEMBLY__ */
60
61 /* to align the pointer to the (next) page boundary */
62 #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
63
64 #ifndef __ASSEMBLY__
65
66 extern void __bug(const char *file, int line, void *data);
67
68 #define BUG() __bug(__FILE__, __LINE__, NULL)
69 #define PAGE_BUG(page) __bug(__FILE__, __LINE__, page)
70
71 /* Pure 2^n version of get_order */
72 extern __inline__ int get_order(unsigned long size)
73 {
74 int order;
75
76 size = (size-1) >> (PAGE_SHIFT-1);
77 order = -1;
78 do {
79 size >>= 1;
80 order++;
81 } while (size);
82 return order;
83 }
84
85 #endif /* !__ASSEMBLY__ */
86
87 #include <linux/config.h>
88 #include <asm/arch/memory.h>
89
90 #define __pa(x) __virt_to_phys((unsigned long)(x))
91 #define __va(x) ((void *)__phys_to_virt((unsigned long)(x)))
92
93 #ifndef CONFIG_DISCONTIGMEM
94 #define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT) - \
95 (PHYS_OFFSET >> PAGE_SHIFT))
96 #define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
97 #endif
98
99 #endif
100
101 #endif
102
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