1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
#ifndef _ASM_PAGE_H
#define _ASM_PAGE_H
#ifdef __KERNEL__
#include <linux/config.h>
#include <asm/virtconvert.h>
#include <asm/mem-layout.h>
#include <asm/sections.h>
#include <asm/setup.h>
#ifndef __ASSEMBLY__
#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
#define free_user_page(page, addr) free_page(addr)
#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
#define copy_user_page(vto, vfrom, vaddr, topg) memcpy((vto), (vfrom), PAGE_SIZE)
/*
* These are used to make use of C type-checking..
*/
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long ste[64];} pmd_t;
typedef struct { pmd_t pue[1]; } pud_t;
typedef struct { pud_t pge[1]; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
#define pte_val(x) ((x).pte)
#define pmd_val(x) ((x).ste[0])
#define pud_val(x) ((x).pue[0])
#define pgd_val(x) ((x).pge[0])
#define pgprot_val(x) ((x).pgprot)
#define __pte(x) ((pte_t) { (x) } )
#define __pmd(x) ((pmd_t) { (x) } )
#define __pud(x) ((pud_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
#define PTE_MASK PAGE_MASK
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
#define devmem_is_allowed(pfn) 1
#define __pa(vaddr) virt_to_phys((void *) vaddr)
#define __va(paddr) phys_to_virt((unsigned long) paddr)
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
extern unsigned long max_low_pfn;
extern unsigned long min_low_pfn;
extern unsigned long max_pfn;
#ifdef CONFIG_MMU
#define pfn_to_page(pfn) (mem_map + (pfn))
#define page_to_pfn(page) ((unsigned long) ((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#else
#define pfn_to_page(pfn) (&mem_map[(pfn) - (PAGE_OFFSET >> PAGE_SHIFT)])
#define page_to_pfn(page) ((PAGE_OFFSET >> PAGE_SHIFT) + (unsigned long) ((page) - mem_map))
#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#ifdef CONFIG_MMU
#define VM_DATA_DEFAULT_FLAGS \
(VM_READ | VM_WRITE | \
((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#endif
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#ifdef CONFIG_CONTIGUOUS_PAGE_ALLOC
#define WANT_PAGE_VIRTUAL 1
#endif
#include <asm-generic/page.h>
#endif /* _ASM_PAGE_H */
|
