diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m68knommu/page.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-m68knommu/page.h')
-rw-r--r-- | include/asm-m68knommu/page.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/asm-m68knommu/page.h b/include/asm-m68knommu/page.h new file mode 100644 index 000000000000..05e03df0ec29 --- /dev/null +++ b/include/asm-m68knommu/page.h | |||
@@ -0,0 +1,95 @@ | |||
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 | |||
51 | /* Pure 2^n version of get_order */ | ||
52 | extern __inline__ int get_order(unsigned long size) | ||
53 | { | ||
54 | int order; | ||
55 | |||
56 | size = (size-1) >> (PAGE_SHIFT-1); | ||
57 | order = -1; | ||
58 | do { | ||
59 | size >>= 1; | ||
60 | order++; | ||
61 | } while (size); | ||
62 | return order; | ||
63 | } | ||
64 | |||
65 | extern unsigned long memory_start; | ||
66 | extern unsigned long memory_end; | ||
67 | |||
68 | #endif /* !__ASSEMBLY__ */ | ||
69 | |||
70 | #include <asm/page_offset.h> | ||
71 | |||
72 | #define PAGE_OFFSET (PAGE_OFFSET_RAW) | ||
73 | |||
74 | #ifndef __ASSEMBLY__ | ||
75 | |||
76 | #define __pa(vaddr) virt_to_phys((void *)vaddr) | ||
77 | #define __va(paddr) phys_to_virt((unsigned long)paddr) | ||
78 | |||
79 | #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) | ||
80 | #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) | ||
81 | |||
82 | #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) | ||
83 | #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) | ||
84 | |||
85 | #define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) | ||
86 | #define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) | ||
87 | |||
88 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | ||
89 | ((void *)(kaddr) < (void *)memory_end)) | ||
90 | |||
91 | #endif /* __ASSEMBLY__ */ | ||
92 | |||
93 | #endif /* __KERNEL__ */ | ||
94 | |||
95 | #endif /* _M68KNOMMU_PAGE_H */ | ||