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Diffstat (limited to 'include/asm-xtensa/page.h.n')
-rw-r--r-- | include/asm-xtensa/page.h.n | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/include/asm-xtensa/page.h.n b/include/asm-xtensa/page.h.n deleted file mode 100644 index 546cc6624f24..000000000000 --- a/include/asm-xtensa/page.h.n +++ /dev/null | |||
@@ -1,135 +0,0 @@ | |||
1 | /* | ||
2 | * linux/include/asm-xtensa/page.h | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify | ||
5 | * it under the terms of the GNU General Public License version2 as | ||
6 | * published by the Free Software Foundation. | ||
7 | * | ||
8 | * Copyright (C) 2001 - 2005 Tensilica Inc. | ||
9 | */ | ||
10 | |||
11 | #ifndef _XTENSA_PAGE_H | ||
12 | #define _XTENSA_PAGE_H | ||
13 | |||
14 | #ifdef __KERNEL__ | ||
15 | |||
16 | #include <asm/processor.h> | ||
17 | #include <linux/config.h> | ||
18 | |||
19 | /* | ||
20 | * PAGE_SHIFT determines the page size | ||
21 | * PAGE_ALIGN(x) aligns the pointer to the (next) page boundary | ||
22 | */ | ||
23 | #define PAGE_SHIFT XCHAL_MMU_MIN_PTE_PAGE_SIZE | ||
24 | #define PAGE_SIZE (1 << PAGE_SHIFT) | ||
25 | #define PAGE_MASK (~(PAGE_SIZE-1)) | ||
26 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE - 1) & PAGE_MASK) | ||
27 | |||
28 | #define DCACHE_WAY_SIZE (XCHAL_DCACHE_SIZE / XCHAL_DCACHE_WAYS) | ||
29 | #define PAGE_OFFSET XCHAL_KSEG_CACHED_VADDR | ||
30 | |||
31 | #ifdef __ASSEMBLY__ | ||
32 | |||
33 | #define __pgprot(x) (x) | ||
34 | |||
35 | #else | ||
36 | |||
37 | |||
38 | /* | ||
39 | * These are used to make use of C type-checking.. | ||
40 | */ | ||
41 | typedef struct { unsigned long pte; } pte_t; /* page table entry */ | ||
42 | typedef struct { unsigned long pmd; } pmd_t; /* PMD table entry */ | ||
43 | typedef struct { unsigned long pgd; } pgd_t; /* PGD table entry */ | ||
44 | typedef struct { unsigned long pgprot; } pgprot_t; | ||
45 | |||
46 | #define pte_val(x) ((x).pte) | ||
47 | #define pmd_val(x) ((x).pmd) | ||
48 | #define pgd_val(x) ((x).pgd) | ||
49 | #define pgprot_val(x) ((x).pgprot) | ||
50 | |||
51 | #define __pte(x) ((pte_t) { (x) } ) | ||
52 | #define __pmd(x) ((pmd_t) { (x) } ) | ||
53 | #define __pgd(x) ((pgd_t) { (x) } ) | ||
54 | #define __pgprot(x) ((pgprot_t) { (x) } ) | ||
55 | |||
56 | /* | ||
57 | * Pure 2^n version of get_order | ||
58 | */ | ||
59 | extern __inline__ int get_order(unsigned long size) | ||
60 | { | ||
61 | int order; | ||
62 | #ifndef XCHAL_HAVE_NSU | ||
63 | unsigned long x1, x2, x4, x8, x16; | ||
64 | |||
65 | size = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; | ||
66 | x1 = size & 0xAAAAAAAA; | ||
67 | x2 = size & 0xCCCCCCCC; | ||
68 | x4 = size & 0xF0F0F0F0; | ||
69 | x8 = size & 0xFF00FF00; | ||
70 | x16 = size & 0xFFFF0000; | ||
71 | order = x2 ? 2 : 0; | ||
72 | order += (x16 != 0) * 16; | ||
73 | order += (x8 != 0) * 8; | ||
74 | order += (x4 != 0) * 4; | ||
75 | order += (x1 != 0); | ||
76 | |||
77 | return order; | ||
78 | #else | ||
79 | size = (size - 1) >> PAGE_SHIFT; | ||
80 | asm ("nsau %0, %1" : "=r" (order) : "r" (size)); | ||
81 | return 32 - order; | ||
82 | #endif | ||
83 | } | ||
84 | |||
85 | |||
86 | struct page; | ||
87 | extern void clear_page(void *page); | ||
88 | extern void copy_page(void *to, void *from); | ||
89 | |||
90 | /* | ||
91 | * If we have cache aliasing and writeback caches, we might have to do | ||
92 | * some extra work | ||
93 | */ | ||
94 | |||
95 | #if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK | ||
96 | void clear_user_page(void *addr, unsigned long vaddr, struct page* page); | ||
97 | void copy_user_page(void *to, void* from, unsigned long vaddr, struct page* page); | ||
98 | #else | ||
99 | # define clear_user_page(page,vaddr,pg) clear_page(page) | ||
100 | # define copy_user_page(to, from, vaddr, pg) copy_page(to, from) | ||
101 | #endif | ||
102 | |||
103 | |||
104 | /* | ||
105 | * This handles the memory map. We handle pages at | ||
106 | * XCHAL_KSEG_CACHED_VADDR for kernels with 32 bit address space. | ||
107 | * These macros are for conversion of kernel address, not user | ||
108 | * addresses. | ||
109 | */ | ||
110 | |||
111 | #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) | ||
112 | #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) | ||
113 | #define pfn_valid(pfn) ((unsigned long)pfn < max_mapnr) | ||
114 | #ifndef CONFIG_DISCONTIGMEM | ||
115 | # define pfn_to_page(pfn) (mem_map + (pfn)) | ||
116 | # define page_to_pfn(page) ((unsigned long)((page) - mem_map)) | ||
117 | #else | ||
118 | # error CONFIG_DISCONTIGMEM not supported | ||
119 | #endif | ||
120 | |||
121 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) | ||
122 | #define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT) | ||
123 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | ||
124 | #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) | ||
125 | |||
126 | #define WANT_PAGE_VIRTUAL | ||
127 | |||
128 | |||
129 | #endif /* __ASSEMBLY__ */ | ||
130 | |||
131 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | ||
132 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | ||
133 | |||
134 | #endif /* __KERNEL__ */ | ||
135 | #endif /* _XTENSA_PAGE_H */ | ||