Commit | Line | Data |
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1da177e4 | 1 | /* |
4baa9922 | 2 | * arch/arm/include/asm/page.h |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 1995-2003 Russell King | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | #ifndef _ASMARM_PAGE_H | |
11 | #define _ASMARM_PAGE_H | |
12 | ||
1da177e4 LT |
13 | /* PAGE_SHIFT determines the page size */ |
14 | #define PAGE_SHIFT 12 | |
f6430a93 | 15 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
1da177e4 LT |
16 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
17 | ||
1da177e4 LT |
18 | #ifndef __ASSEMBLY__ |
19 | ||
002547b4 RK |
20 | #ifndef CONFIG_MMU |
21 | ||
22 | #include "page-nommu.h" | |
23 | ||
24 | #else | |
25 | ||
1da177e4 LT |
26 | #include <asm/glue.h> |
27 | ||
28 | /* | |
29 | * User Space Model | |
30 | * ================ | |
31 | * | |
32 | * This section selects the correct set of functions for dealing with | |
33 | * page-based copying and clearing for user space for the particular | |
34 | * processor(s) we're building for. | |
35 | * | |
36 | * We have the following to choose from: | |
37 | * v3 - ARMv3 | |
38 | * v4wt - ARMv4 with writethrough cache, without minicache | |
39 | * v4wb - ARMv4 with writeback cache, without minicache | |
40 | * v4_mc - ARMv4 with minicache | |
41 | * xscale - Xscale | |
23bdf86a | 42 | * xsc3 - XScalev3 |
1da177e4 LT |
43 | */ |
44 | #undef _USER | |
45 | #undef MULTI_USER | |
46 | ||
47 | #ifdef CONFIG_CPU_COPY_V3 | |
48 | # ifdef _USER | |
49 | # define MULTI_USER 1 | |
50 | # else | |
51 | # define _USER v3 | |
52 | # endif | |
53 | #endif | |
54 | ||
55 | #ifdef CONFIG_CPU_COPY_V4WT | |
56 | # ifdef _USER | |
57 | # define MULTI_USER 1 | |
58 | # else | |
59 | # define _USER v4wt | |
60 | # endif | |
61 | #endif | |
62 | ||
63 | #ifdef CONFIG_CPU_COPY_V4WB | |
64 | # ifdef _USER | |
65 | # define MULTI_USER 1 | |
66 | # else | |
67 | # define _USER v4wb | |
68 | # endif | |
69 | #endif | |
70 | ||
0ed15071 LB |
71 | #ifdef CONFIG_CPU_COPY_FEROCEON |
72 | # ifdef _USER | |
73 | # define MULTI_USER 1 | |
74 | # else | |
75 | # define _USER feroceon | |
76 | # endif | |
77 | #endif | |
78 | ||
28853ac8 PZ |
79 | #ifdef CONFIG_CPU_COPY_FA |
80 | # ifdef _USER | |
81 | # define MULTI_USER 1 | |
82 | # else | |
83 | # define _USER fa | |
84 | # endif | |
85 | #endif | |
86 | ||
1da177e4 LT |
87 | #ifdef CONFIG_CPU_SA1100 |
88 | # ifdef _USER | |
89 | # define MULTI_USER 1 | |
90 | # else | |
91 | # define _USER v4_mc | |
92 | # endif | |
93 | #endif | |
94 | ||
95 | #ifdef CONFIG_CPU_XSCALE | |
96 | # ifdef _USER | |
97 | # define MULTI_USER 1 | |
98 | # else | |
99 | # define _USER xscale_mc | |
100 | # endif | |
101 | #endif | |
102 | ||
23bdf86a LB |
103 | #ifdef CONFIG_CPU_XSC3 |
104 | # ifdef _USER | |
105 | # define MULTI_USER 1 | |
106 | # else | |
107 | # define _USER xsc3_mc | |
108 | # endif | |
109 | #endif | |
110 | ||
1da177e4 LT |
111 | #ifdef CONFIG_CPU_COPY_V6 |
112 | # define MULTI_USER 1 | |
113 | #endif | |
114 | ||
115 | #if !defined(_USER) && !defined(MULTI_USER) | |
116 | #error Unknown user operations model | |
117 | #endif | |
118 | ||
063b0a42 | 119 | struct page; |
f00a75c0 | 120 | struct vm_area_struct; |
063b0a42 | 121 | |
1da177e4 | 122 | struct cpu_user_fns { |
303c6443 | 123 | void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr); |
063b0a42 | 124 | void (*cpu_copy_user_highpage)(struct page *to, struct page *from, |
f00a75c0 | 125 | unsigned long vaddr, struct vm_area_struct *vma); |
1da177e4 LT |
126 | }; |
127 | ||
128 | #ifdef MULTI_USER | |
129 | extern struct cpu_user_fns cpu_user; | |
130 | ||
303c6443 | 131 | #define __cpu_clear_user_highpage cpu_user.cpu_clear_user_highpage |
063b0a42 | 132 | #define __cpu_copy_user_highpage cpu_user.cpu_copy_user_highpage |
1da177e4 LT |
133 | |
134 | #else | |
135 | ||
303c6443 | 136 | #define __cpu_clear_user_highpage __glue(_USER,_clear_user_highpage) |
063b0a42 | 137 | #define __cpu_copy_user_highpage __glue(_USER,_copy_user_highpage) |
1da177e4 | 138 | |
303c6443 | 139 | extern void __cpu_clear_user_highpage(struct page *page, unsigned long vaddr); |
063b0a42 | 140 | extern void __cpu_copy_user_highpage(struct page *to, struct page *from, |
f00a75c0 | 141 | unsigned long vaddr, struct vm_area_struct *vma); |
1da177e4 LT |
142 | #endif |
143 | ||
303c6443 RK |
144 | #define clear_user_highpage(page,vaddr) \ |
145 | __cpu_clear_user_highpage(page, vaddr) | |
063b0a42 RK |
146 | |
147 | #define __HAVE_ARCH_COPY_USER_HIGHPAGE | |
148 | #define copy_user_highpage(to,from,vaddr,vma) \ | |
f00a75c0 | 149 | __cpu_copy_user_highpage(to, from, vaddr, vma) |
1da177e4 | 150 | |
59f0cb0f | 151 | #define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) |
1da177e4 LT |
152 | extern void copy_page(void *to, const void *from); |
153 | ||
17f57211 | 154 | #include <asm/pgtable-2level-types.h> |
1da177e4 | 155 | |
002547b4 RK |
156 | #endif /* CONFIG_MMU */ |
157 | ||
50346e62 GU |
158 | typedef struct page *pgtable_t; |
159 | ||
7b7bf499 | 160 | #ifdef CONFIG_HAVE_ARCH_PFN_VALID |
b7cfda9f RK |
161 | extern int pfn_valid(unsigned long); |
162 | #endif | |
163 | ||
1da177e4 LT |
164 | #include <asm/memory.h> |
165 | ||
166 | #endif /* !__ASSEMBLY__ */ | |
167 | ||
8ec53663 RK |
168 | #define VM_DATA_DEFAULT_FLAGS \ |
169 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ | |
170 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
1da177e4 | 171 | |
5b17e1cd | 172 | #include <asm-generic/getorder.h> |
fd4fd5aa | 173 | |
1da177e4 | 174 | #endif |