1
2
3
4
5#ifndef __ASM_ARC_PAGE_H
6#define __ASM_ARC_PAGE_H
7
8#include <uapi/asm/page.h>
9
10#ifdef CONFIG_ARC_HAS_PAE40
11
12#define MAX_POSSIBLE_PHYSMEM_BITS 40
13#define PAGE_MASK_PHYS (0xff00000000ull | PAGE_MASK)
14
15#else
16
17#define MAX_POSSIBLE_PHYSMEM_BITS 32
18#define PAGE_MASK_PHYS PAGE_MASK
19
20#endif
21
22#ifndef __ASSEMBLY__
23
24#define clear_page(paddr) memset((paddr), 0, PAGE_SIZE)
25#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
26#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
27
28struct vm_area_struct;
29struct page;
30
31#define __HAVE_ARCH_COPY_USER_HIGHPAGE
32
33void copy_user_highpage(struct page *to, struct page *from,
34 unsigned long u_vaddr, struct vm_area_struct *vma);
35void clear_user_page(void *to, unsigned long u_vaddr, struct page *page);
36
37#undef STRICT_MM_TYPECHECKS
38
39#ifdef STRICT_MM_TYPECHECKS
40
41
42
43typedef struct {
44#ifdef CONFIG_ARC_HAS_PAE40
45 unsigned long long pte;
46#else
47 unsigned long pte;
48#endif
49} pte_t;
50typedef struct {
51 unsigned long pgd;
52} pgd_t;
53typedef struct {
54 unsigned long pgprot;
55} pgprot_t;
56
57#define pte_val(x) ((x).pte)
58#define pgd_val(x) ((x).pgd)
59#define pgprot_val(x) ((x).pgprot)
60
61#define __pte(x) ((pte_t) { (x) })
62#define __pgd(x) ((pgd_t) { (x) })
63#define __pgprot(x) ((pgprot_t) { (x) })
64
65#define pte_pgprot(x) __pgprot(pte_val(x))
66
67#else
68
69#ifdef CONFIG_ARC_HAS_PAE40
70typedef unsigned long long pte_t;
71#else
72typedef unsigned long pte_t;
73#endif
74typedef unsigned long pgd_t;
75typedef unsigned long pgprot_t;
76
77#define pte_val(x) (x)
78#define pgd_val(x) (x)
79#define pgprot_val(x) (x)
80#define __pte(x) (x)
81#define __pgd(x) (x)
82#define __pgprot(x) (x)
83#define pte_pgprot(x) (x)
84
85#endif
86
87typedef pte_t * pgtable_t;
88
89
90
91
92
93
94
95
96#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
97
98
99
100
101
102
103#ifdef CONFIG_HIGHMEM
104
105extern unsigned long arch_pfn_offset;
106#define ARCH_PFN_OFFSET arch_pfn_offset
107
108extern int pfn_valid(unsigned long pfn);
109#define pfn_valid pfn_valid
110
111#else
112
113#define ARCH_PFN_OFFSET virt_to_pfn(CONFIG_LINUX_RAM_BASE)
114#define pfn_valid(pfn) (((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
115
116#endif
117
118
119
120
121
122
123
124
125#define __pa(vaddr) ((unsigned long)(vaddr))
126#define __va(paddr) ((void *)((unsigned long)(paddr)))
127
128#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
129#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
130
131
132#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
133
134#define WANT_PAGE_VIRTUAL 1
135
136#include <asm-generic/memory_model.h>
137#include <asm-generic/getorder.h>
138
139#endif
140
141#endif
142