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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-08-02 05:55:55 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-02 16:32:35 -0400
commit4baa9922430662431231ac637adedddbb0cfb2d7 (patch)
treee8fb765ce3e41c01f33de34a0bc9494f0ae19818 /arch/arm/include/asm/page.h
parentff4db0a043a5dee7180bdffd178e61cd02812c68 (diff)
[ARM] move include/asm-arm to arch/arm/include/asm
Move platform independent header files to arch/arm/include/asm, leaving those in asm/arch* and asm/plat* alone. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/page.h')
-rw-r--r--arch/arm/include/asm/page.h199
1 files changed, 199 insertions, 0 deletions
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
new file mode 100644
index 000000000000..cf2e2680daaa
--- /dev/null
+++ b/arch/arm/include/asm/page.h
@@ -0,0 +1,199 @@
1/*
2 * arch/arm/include/asm/page.h
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
13/* PAGE_SHIFT determines the page size */
14#define PAGE_SHIFT 12
15#define PAGE_SIZE (1UL << PAGE_SHIFT)
16#define PAGE_MASK (~(PAGE_SIZE-1))
17
18#ifndef __ASSEMBLY__
19
20#ifndef CONFIG_MMU
21
22#include "page-nommu.h"
23
24#else
25
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
42 * xsc3 - XScalev3
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
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
79#ifdef CONFIG_CPU_SA1100
80# ifdef _USER
81# define MULTI_USER 1
82# else
83# define _USER v4_mc
84# endif
85#endif
86
87#ifdef CONFIG_CPU_XSCALE
88# ifdef _USER
89# define MULTI_USER 1
90# else
91# define _USER xscale_mc
92# endif
93#endif
94
95#ifdef CONFIG_CPU_XSC3
96# ifdef _USER
97# define MULTI_USER 1
98# else
99# define _USER xsc3_mc
100# endif
101#endif
102
103#ifdef CONFIG_CPU_COPY_V6
104# define MULTI_USER 1
105#endif
106
107#if !defined(_USER) && !defined(MULTI_USER)
108#error Unknown user operations model
109#endif
110
111struct cpu_user_fns {
112 void (*cpu_clear_user_page)(void *p, unsigned long user);
113 void (*cpu_copy_user_page)(void *to, const void *from,
114 unsigned long user);
115};
116
117#ifdef MULTI_USER
118extern struct cpu_user_fns cpu_user;
119
120#define __cpu_clear_user_page cpu_user.cpu_clear_user_page
121#define __cpu_copy_user_page cpu_user.cpu_copy_user_page
122
123#else
124
125#define __cpu_clear_user_page __glue(_USER,_clear_user_page)
126#define __cpu_copy_user_page __glue(_USER,_copy_user_page)
127
128extern void __cpu_clear_user_page(void *p, unsigned long user);
129extern void __cpu_copy_user_page(void *to, const void *from,
130 unsigned long user);
131#endif
132
133#define clear_user_page(addr,vaddr,pg) __cpu_clear_user_page(addr, vaddr)
134#define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr)
135
136#define clear_page(page) memzero((void *)(page), PAGE_SIZE)
137extern void copy_page(void *to, const void *from);
138
139#undef STRICT_MM_TYPECHECKS
140
141#ifdef STRICT_MM_TYPECHECKS
142/*
143 * These are used to make use of C type-checking..
144 */
145typedef struct { unsigned long pte; } pte_t;
146typedef struct { unsigned long pmd; } pmd_t;
147typedef struct { unsigned long pgd[2]; } pgd_t;
148typedef struct { unsigned long pgprot; } pgprot_t;
149
150#define pte_val(x) ((x).pte)
151#define pmd_val(x) ((x).pmd)
152#define pgd_val(x) ((x).pgd[0])
153#define pgprot_val(x) ((x).pgprot)
154
155#define __pte(x) ((pte_t) { (x) } )
156#define __pmd(x) ((pmd_t) { (x) } )
157#define __pgprot(x) ((pgprot_t) { (x) } )
158
159#else
160/*
161 * .. while these make it easier on the compiler
162 */
163typedef unsigned long pte_t;
164typedef unsigned long pmd_t;
165typedef unsigned long pgd_t[2];
166typedef unsigned long pgprot_t;
167
168#define pte_val(x) (x)
169#define pmd_val(x) (x)
170#define pgd_val(x) ((x)[0])
171#define pgprot_val(x) (x)
172
173#define __pte(x) (x)
174#define __pmd(x) (x)
175#define __pgprot(x) (x)
176
177#endif /* STRICT_MM_TYPECHECKS */
178
179#endif /* CONFIG_MMU */
180
181typedef struct page *pgtable_t;
182
183#include <asm/memory.h>
184
185#endif /* !__ASSEMBLY__ */
186
187#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
188 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
189
190/*
191 * With EABI on ARMv5 and above we must have 64-bit aligned slab pointers.
192 */
193#if defined(CONFIG_AEABI) && (__LINUX_ARM_ARCH__ >= 5)
194#define ARCH_SLAB_MINALIGN 8
195#endif
196
197#include <asm-generic/page.h>
198
199#endif