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-frv/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-frv/page.h')
-rw-r--r-- | include/asm-frv/page.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/asm-frv/page.h b/include/asm-frv/page.h new file mode 100644 index 000000000000..f7914f1782b0 --- /dev/null +++ b/include/asm-frv/page.h | |||
@@ -0,0 +1,105 @@ | |||
1 | #ifndef _ASM_PAGE_H | ||
2 | #define _ASM_PAGE_H | ||
3 | |||
4 | #ifdef __KERNEL__ | ||
5 | |||
6 | #include <linux/config.h> | ||
7 | #include <asm/virtconvert.h> | ||
8 | #include <asm/mem-layout.h> | ||
9 | #include <asm/sections.h> | ||
10 | #include <asm/setup.h> | ||
11 | |||
12 | #ifndef __ASSEMBLY__ | ||
13 | |||
14 | #define get_user_page(vaddr) __get_free_page(GFP_KERNEL) | ||
15 | #define free_user_page(page, addr) free_page(addr) | ||
16 | |||
17 | #define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE) | ||
18 | #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) | ||
19 | |||
20 | #define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE) | ||
21 | #define copy_user_page(vto, vfrom, vaddr, topg) memcpy((vto), (vfrom), PAGE_SIZE) | ||
22 | |||
23 | /* | ||
24 | * These are used to make use of C type-checking.. | ||
25 | */ | ||
26 | typedef struct { unsigned long pte; } pte_t; | ||
27 | typedef struct { unsigned long ste[64];} pmd_t; | ||
28 | typedef struct { pmd_t pue[1]; } pud_t; | ||
29 | typedef struct { pud_t pge[1]; } pgd_t; | ||
30 | typedef struct { unsigned long pgprot; } pgprot_t; | ||
31 | |||
32 | #define pte_val(x) ((x).pte) | ||
33 | #define pmd_val(x) ((x).ste[0]) | ||
34 | #define pud_val(x) ((x).pue[0]) | ||
35 | #define pgd_val(x) ((x).pge[0]) | ||
36 | #define pgprot_val(x) ((x).pgprot) | ||
37 | |||
38 | #define __pte(x) ((pte_t) { (x) } ) | ||
39 | #define __pmd(x) ((pmd_t) { (x) } ) | ||
40 | #define __pud(x) ((pud_t) { (x) } ) | ||
41 | #define __pgd(x) ((pgd_t) { (x) } ) | ||
42 | #define __pgprot(x) ((pgprot_t) { (x) } ) | ||
43 | #define PTE_MASK PAGE_MASK | ||
44 | |||
45 | /* to align the pointer to the (next) page boundary */ | ||
46 | #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK) | ||
47 | |||
48 | /* Pure 2^n version of get_order */ | ||
49 | static inline int get_order(unsigned long size) __attribute_const__; | ||
50 | static inline int get_order(unsigned long size) | ||
51 | { | ||
52 | int order; | ||
53 | |||
54 | size = (size - 1) >> (PAGE_SHIFT - 1); | ||
55 | order = -1; | ||
56 | do { | ||
57 | size >>= 1; | ||
58 | order++; | ||
59 | } while (size); | ||
60 | return order; | ||
61 | } | ||
62 | |||
63 | #define devmem_is_allowed(pfn) 1 | ||
64 | |||
65 | #define __pa(vaddr) virt_to_phys((void *) vaddr) | ||
66 | #define __va(paddr) phys_to_virt((unsigned long) paddr) | ||
67 | |||
68 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | ||
69 | |||
70 | extern unsigned long max_low_pfn; | ||
71 | extern unsigned long min_low_pfn; | ||
72 | extern unsigned long max_pfn; | ||
73 | |||
74 | #ifdef CONFIG_MMU | ||
75 | #define pfn_to_page(pfn) (mem_map + (pfn)) | ||
76 | #define page_to_pfn(page) ((unsigned long) ((page) - mem_map)) | ||
77 | #define pfn_valid(pfn) ((pfn) < max_mapnr) | ||
78 | |||
79 | #else | ||
80 | #define pfn_to_page(pfn) (&mem_map[(pfn) - (PAGE_OFFSET >> PAGE_SHIFT)]) | ||
81 | #define page_to_pfn(page) ((PAGE_OFFSET >> PAGE_SHIFT) + (unsigned long) ((page) - mem_map)) | ||
82 | #define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn) | ||
83 | |||
84 | #endif | ||
85 | |||
86 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) | ||
87 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | ||
88 | |||
89 | |||
90 | #ifdef CONFIG_MMU | ||
91 | #define VM_DATA_DEFAULT_FLAGS \ | ||
92 | (VM_READ | VM_WRITE | \ | ||
93 | ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ | ||
94 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | ||
95 | #endif | ||
96 | |||
97 | #endif /* __ASSEMBLY__ */ | ||
98 | |||
99 | #endif /* __KERNEL__ */ | ||
100 | |||
101 | #ifdef CONFIG_CONTIGUOUS_PAGE_ALLOC | ||
102 | #define WANT_PAGE_VIRTUAL 1 | ||
103 | #endif | ||
104 | |||
105 | #endif /* _ASM_PAGE_H */ | ||