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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 | ||
14 | #ifdef __KERNEL__ | |
15 | ||
16 | #include <asm/setup.h> | |
17 | ||
18 | #ifndef __ASSEMBLY__ | |
19 | ||
20 | #define get_user_page(vaddr) __get_free_page(GFP_KERNEL) | |
21 | #define free_user_page(page, addr) free_page(addr) | |
22 | ||
23 | #define clear_page(page) memset((page), 0, PAGE_SIZE) | |
24 | #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) | |
25 | ||
26 | #define clear_user_page(page, vaddr,pg) clear_page(page) | |
27 | #define copy_user_page(to, from, vaddr,pg) copy_page(to, from) | |
28 | ||
29 | /* | |
30 | * These are used to make use of C type-checking.. | |
31 | */ | |
32 | typedef struct { | |
33 | unsigned long pte; | |
34 | } pte_t; | |
35 | typedef struct { | |
36 | unsigned long pmd[16]; | |
37 | } pmd_t; | |
38 | typedef struct { | |
39 | unsigned long pgd; | |
40 | } pgd_t; | |
41 | typedef struct { | |
42 | unsigned long pgprot; | |
43 | } pgprot_t; | |
44 | ||
45 | #define pte_val(x) ((x).pte) | |
46 | #define pmd_val(x) ((&x)->pmd[0]) | |
47 | #define pgd_val(x) ((x).pgd) | |
48 | #define pgprot_val(x) ((x).pgprot) | |
49 | ||
50 | #define __pte(x) ((pte_t) { (x) } ) | |
51 | #define __pmd(x) ((pmd_t) { (x) } ) | |
52 | #define __pgd(x) ((pgd_t) { (x) } ) | |
53 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
54 | ||
55 | /* to align the pointer to the (next) page boundary */ | |
56 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
57 | ||
58 | extern unsigned long memory_start; | |
59 | extern unsigned long memory_end; | |
60 | ||
61 | #endif /* !__ASSEMBLY__ */ | |
62 | ||
63 | #include <asm/page_offset.h> | |
64 | #include <asm/io.h> | |
65 | ||
66 | #define PAGE_OFFSET (PAGE_OFFSET_RAW) | |
67 | ||
68 | #ifndef __ASSEMBLY__ | |
69 | ||
70 | #define __pa(vaddr) virt_to_phys((void *)(vaddr)) | |
71 | #define __va(paddr) phys_to_virt((unsigned long)(paddr)) | |
72 | ||
73 | #define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT) | |
74 | ||
75 | #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) | |
76 | #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) | |
77 | #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) | |
78 | #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) | |
79 | #define VALID_PAGE(page) ((page - mem_map) < max_mapnr) | |
80 | ||
81 | #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) | |
82 | #define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) | |
83 | #define pfn_valid(pfn) ((pfn) < max_mapnr) | |
84 | ||
85 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | |
86 | ((void *)(kaddr) < (void *)memory_end)) | |
87 | ||
88 | #include <asm-generic/page.h> | |
89 | ||
90 | #endif /* __ASSEMBLY__ */ | |
91 | #endif /* __KERNEL__ */ | |
92 | ||
93 | #endif /* _BLACKFIN_PAGE_H */ |