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1 | #ifndef _BLACKFIN_PAGE_H |
2 | #define _BLACKFIN_PAGE_H | |
3 | ||
4 | /* PAGE_SHIFT determines the page size */ | |
5 | ||
6 | #define PAGE_SHIFT 12 | |
520473b0 MF |
7 | #ifdef __ASSEMBLY__ |
8 | #define PAGE_SIZE (1 << PAGE_SHIFT) | |
9 | #else | |
1394f032 | 10 | #define PAGE_SIZE (1UL << PAGE_SHIFT) |
520473b0 | 11 | #endif |
1394f032 BW |
12 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
13 | ||
1394f032 BW |
14 | #include <asm/setup.h> |
15 | ||
16 | #ifndef __ASSEMBLY__ | |
17 | ||
18 | #define get_user_page(vaddr) __get_free_page(GFP_KERNEL) | |
19 | #define free_user_page(page, addr) free_page(addr) | |
20 | ||
21 | #define clear_page(page) memset((page), 0, PAGE_SIZE) | |
22 | #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) | |
23 | ||
24 | #define clear_user_page(page, vaddr,pg) clear_page(page) | |
25 | #define copy_user_page(to, from, vaddr,pg) copy_page(to, from) | |
26 | ||
27 | /* | |
28 | * These are used to make use of C type-checking.. | |
29 | */ | |
30 | typedef struct { | |
31 | unsigned long pte; | |
32 | } pte_t; | |
33 | typedef struct { | |
34 | unsigned long pmd[16]; | |
35 | } pmd_t; | |
36 | typedef struct { | |
37 | unsigned long pgd; | |
38 | } pgd_t; | |
39 | typedef struct { | |
40 | unsigned long pgprot; | |
41 | } pgprot_t; | |
257ce734 | 42 | typedef struct page *pgtable_t; |
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43 | |
44 | #define pte_val(x) ((x).pte) | |
45 | #define pmd_val(x) ((&x)->pmd[0]) | |
46 | #define pgd_val(x) ((x).pgd) | |
47 | #define pgprot_val(x) ((x).pgprot) | |
48 | ||
49 | #define __pte(x) ((pte_t) { (x) } ) | |
50 | #define __pmd(x) ((pmd_t) { (x) } ) | |
51 | #define __pgd(x) ((pgd_t) { (x) } ) | |
52 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
53 | ||
1394f032 BW |
54 | extern unsigned long memory_start; |
55 | extern unsigned long memory_end; | |
56 | ||
57 | #endif /* !__ASSEMBLY__ */ | |
58 | ||
59 | #include <asm/page_offset.h> | |
60 | #include <asm/io.h> | |
61 | ||
62 | #define PAGE_OFFSET (PAGE_OFFSET_RAW) | |
63 | ||
64 | #ifndef __ASSEMBLY__ | |
65 | ||
66 | #define __pa(vaddr) virt_to_phys((void *)(vaddr)) | |
67 | #define __va(paddr) phys_to_virt((unsigned long)(paddr)) | |
68 | ||
69 | #define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT) | |
70 | ||
71 | #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) | |
72 | #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) | |
73 | #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) | |
74 | #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) | |
75 | #define VALID_PAGE(page) ((page - mem_map) < max_mapnr) | |
76 | ||
77 | #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) | |
78 | #define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) | |
79 | #define pfn_valid(pfn) ((pfn) < max_mapnr) | |
80 | ||
81 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | |
82 | ((void *)(kaddr) < (void *)memory_end)) | |
83 | ||
84 | #include <asm-generic/page.h> | |
85 | ||
86 | #endif /* __ASSEMBLY__ */ | |
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87 | |
88 | #endif /* _BLACKFIN_PAGE_H */ |