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1da177e4 LT |
1 | #ifndef _M68KNOMMU_PAGE_H |
2 | #define _M68KNOMMU_PAGE_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | ||
6 | /* PAGE_SHIFT determines the page size */ | |
7 | ||
8 | #define PAGE_SHIFT (12) | |
9 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | |
10 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
11 | ||
12 | #ifdef __KERNEL__ | |
13 | ||
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 | #define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr) | |
28 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE | |
29 | ||
30 | /* | |
31 | * These are used to make use of C type-checking.. | |
32 | */ | |
33 | typedef struct { unsigned long pte; } pte_t; | |
34 | typedef struct { unsigned long pmd[16]; } pmd_t; | |
35 | typedef struct { unsigned long pgd; } pgd_t; | |
36 | typedef struct { unsigned long pgprot; } pgprot_t; | |
37 | ||
38 | #define pte_val(x) ((x).pte) | |
39 | #define pmd_val(x) ((&x)->pmd[0]) | |
40 | #define pgd_val(x) ((x).pgd) | |
41 | #define pgprot_val(x) ((x).pgprot) | |
42 | ||
43 | #define __pte(x) ((pte_t) { (x) } ) | |
44 | #define __pmd(x) ((pmd_t) { (x) } ) | |
45 | #define __pgd(x) ((pgd_t) { (x) } ) | |
46 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
47 | ||
48 | /* to align the pointer to the (next) page boundary */ | |
49 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | |
50 | ||
1da177e4 LT |
51 | extern unsigned long memory_start; |
52 | extern unsigned long memory_end; | |
53 | ||
54 | #endif /* !__ASSEMBLY__ */ | |
55 | ||
56 | #include <asm/page_offset.h> | |
57 | ||
58 | #define PAGE_OFFSET (PAGE_OFFSET_RAW) | |
59 | ||
60 | #ifndef __ASSEMBLY__ | |
61 | ||
e70bd116 GU |
62 | #define __pa(vaddr) virt_to_phys((void *)(vaddr)) |
63 | #define __va(paddr) phys_to_virt((unsigned long)(paddr)) | |
1da177e4 LT |
64 | |
65 | #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) | |
66 | #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) | |
67 | ||
68 | #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) | |
69 | #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) | |
70 | ||
71 | #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) | |
72 | #define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) | |
e70bd116 | 73 | #define pfn_valid(pfn) ((pfn) < max_mapnr) |
1da177e4 LT |
74 | |
75 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | |
76 | ((void *)(kaddr) < (void *)memory_end)) | |
77 | ||
78 | #endif /* __ASSEMBLY__ */ | |
79 | ||
80 | #endif /* __KERNEL__ */ | |
81 | ||
fd4fd5aa SR |
82 | #include <asm-generic/page.h> |
83 | ||
1da177e4 | 84 | #endif /* _M68KNOMMU_PAGE_H */ |