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10#ifndef _ASMARM_PAGE_H
11#define _ASMARM_PAGE_H
12
13
14#define PAGE_SHIFT 12
15#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
16#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
17
18#ifndef __ASSEMBLY__
19
20#ifndef CONFIG_MMU
21
22#include <asm/page-nommu.h>
23
24#else
25
26#include <asm/glue.h>
27
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40
41
42
43#undef _USER
44#undef MULTI_USER
45
46#ifdef CONFIG_CPU_COPY_V4WT
47# ifdef _USER
48# define MULTI_USER 1
49# else
50# define _USER v4wt
51# endif
52#endif
53
54#ifdef CONFIG_CPU_COPY_V4WB
55# ifdef _USER
56# define MULTI_USER 1
57# else
58# define _USER v4wb
59# endif
60#endif
61
62#ifdef CONFIG_CPU_COPY_FEROCEON
63# ifdef _USER
64# define MULTI_USER 1
65# else
66# define _USER feroceon
67# endif
68#endif
69
70#ifdef CONFIG_CPU_COPY_FA
71# ifdef _USER
72# define MULTI_USER 1
73# else
74# define _USER fa
75# endif
76#endif
77
78#ifdef CONFIG_CPU_SA1100
79# ifdef _USER
80# define MULTI_USER 1
81# else
82# define _USER v4_mc
83# endif
84#endif
85
86#ifdef CONFIG_CPU_XSCALE
87# ifdef _USER
88# define MULTI_USER 1
89# else
90# define _USER xscale_mc
91# endif
92#endif
93
94#ifdef CONFIG_CPU_XSC3
95# ifdef _USER
96# define MULTI_USER 1
97# else
98# define _USER xsc3_mc
99# endif
100#endif
101
102#ifdef CONFIG_CPU_COPY_V6
103# define MULTI_USER 1
104#endif
105
106#if !defined(_USER) && !defined(MULTI_USER)
107#error Unknown user operations model
108#endif
109
110struct page;
111struct vm_area_struct;
112
113struct cpu_user_fns {
114 void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr);
115 void (*cpu_copy_user_highpage)(struct page *to, struct page *from,
116 unsigned long vaddr, struct vm_area_struct *vma);
117};
118
119#ifdef MULTI_USER
120extern struct cpu_user_fns cpu_user;
121
122#define __cpu_clear_user_highpage cpu_user.cpu_clear_user_highpage
123#define __cpu_copy_user_highpage cpu_user.cpu_copy_user_highpage
124
125#else
126
127#define __cpu_clear_user_highpage __glue(_USER,_clear_user_highpage)
128#define __cpu_copy_user_highpage __glue(_USER,_copy_user_highpage)
129
130extern void __cpu_clear_user_highpage(struct page *page, unsigned long vaddr);
131extern void __cpu_copy_user_highpage(struct page *to, struct page *from,
132 unsigned long vaddr, struct vm_area_struct *vma);
133#endif
134
135#define clear_user_highpage(page,vaddr) \
136 __cpu_clear_user_highpage(page, vaddr)
137
138#define __HAVE_ARCH_COPY_USER_HIGHPAGE
139#define copy_user_highpage(to,from,vaddr,vma) \
140 __cpu_copy_user_highpage(to, from, vaddr, vma)
141
142#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
143extern void copy_page(void *to, const void *from);
144
145#ifdef CONFIG_KUSER_HELPERS
146#define __HAVE_ARCH_GATE_AREA 1
147#endif
148
149#ifdef CONFIG_ARM_LPAE
150#include <asm/pgtable-3level-types.h>
151#else
152#include <asm/pgtable-2level-types.h>
153#endif
154
155#endif
156
157typedef struct page *pgtable_t;
158
159#ifdef CONFIG_HAVE_ARCH_PFN_VALID
160extern int pfn_valid(unsigned long);
161#endif
162
163#include <asm/memory.h>
164
165#endif
166
167#define VM_DATA_DEFAULT_FLAGS \
168 (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
169 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
170
171#include <asm-generic/getorder.h>
172
173#endif
174