blob: 000a64416a7e6ee29332475be529ccbf9f414423 (
plain)
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
93
94
95
|
#ifndef _PPC_PAGE_H
#define _PPC_PAGE_H
#include <linux/config.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT 12
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
/* This handles the memory map.. */
/*
* these virtual mappings for prep and pmac
* on the prep machine the io areas are at different physical locations
* than their virtual address. On the pmac and chrp the io areas
* are mapped 1-1 virtual/physical.
* -- Cort
*/
#if defined(CONFIG_PREP) || defined(CONFIG_CHRP)
#define KERNELBASE 0x90000000
#endif
#ifdef CONFIG_PMAC
#define KERNELBASE 0xc0000000
#endif
#define PAGE_OFFSET KERNELBASE
#ifndef __ASSEMBLY__
#ifdef __KERNEL__
#define STRICT_MM_TYPECHECKS
#ifdef STRICT_MM_TYPECHECKS
/*
* These are used to make use of C type-checking..
*/
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd; } pmd_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
#define pte_val(x) ((x).pte)
#define pmd_val(x) ((x).pmd)
#define pgd_val(x) ((x).pgd)
#define pgprot_val(x) ((x).pgprot)
#define __pte(x) ((pte_t) { (x) } )
#define __pmd(x) ((pmd_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
#else
/*
* .. while these make it easier on the compiler
*/
typedef unsigned long pte_t;
typedef unsigned long pmd_t;
typedef unsigned long pgd_t;
typedef unsigned long pgprot_t;
#define pte_val(x) (x)
#define pmd_val(x) (x)
#define pgd_val(x) (x)
#define pgprot_val(x) (x)
#define __pte(x) (x)
#define __pmd(x) (x)
#define __pgd(x) (x)
#define __pgprot(x) (x)
#endif
/* align addr on a size boundry - adjust address up if needed -- Cort */
#define _ALIGN(addr,size) (((addr)+size-1)&(~(size-1)))
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
/* map phys->virtual and virtual->phys for RAM pages */
#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
#define MAP_NR(addr) (__pa(addr) >> PAGE_SHIFT)
#define MAP_PAGE_RESERVED (1<<15)
extern unsigned long get_prezerod_page(void);
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
#endif /* _PPC_PAGE_H */
|
