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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [include/] [asm-alpha/] [page.h] - Blame information for rev 1780

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#ifndef _ALPHA_PAGE_H
#define _ALPHA_PAGE_H
 
#include <asm/pal.h>
 
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT      13
#define PAGE_SIZE       (1UL << PAGE_SHIFT)
#define PAGE_MASK       (~(PAGE_SIZE-1))
 
#ifdef __KERNEL__
 
#ifndef __ASSEMBLY__
 
#define STRICT_MM_TYPECHECKS
 
extern void clear_page(void *page);
#define clear_user_page(page, vaddr)    clear_page(page)
 
extern void copy_page(void * _to, void * _from);
#define copy_user_page(to, from, vaddr) copy_page(to, from)
 
#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 __pgd(x)        (x)
#define __pgprot(x)     (x)
 
#endif /* STRICT_MM_TYPECHECKS */
 
#define BUG()                                                                   \
do {                                                                            \
        printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__);                   \
        __asm__ __volatile__("call_pal %0  # bugchk" : : "i" (PAL_bugchk));     \
} while (0)
#define PAGE_BUG(page)  BUG()
 
/* Pure 2^n version of get_order */
extern __inline__ int get_order(unsigned long size)
{
        int order;
 
        size = (size-1) >> (PAGE_SHIFT-1);
        order = -1;
        do {
                size >>= 1;
                order++;
        } while (size);
        return order;
}
 
#endif /* !__ASSEMBLY__ */
 
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
 
#ifdef USE_48_BIT_KSEG
#define PAGE_OFFSET             0xffff800000000000
#else
#define PAGE_OFFSET             0xfffffc0000000000
#endif
 
#define __pa(x)                 ((unsigned long) (x) - PAGE_OFFSET)
#define __va(x)                 ((void *)((unsigned long) (x) + PAGE_OFFSET))
#ifndef CONFIG_DISCONTIGMEM
#define virt_to_page(kaddr)     (mem_map + (__pa(kaddr) >> PAGE_SHIFT))
#define VALID_PAGE(page)        (((page) - mem_map) < max_mapnr)
#endif /* CONFIG_DISCONTIGMEM */
 
#define VM_DATA_DEFAULT_FLAGS           (VM_READ | VM_WRITE | VM_EXEC | \
                                         VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
#endif /* __KERNEL__ */
 
#endif /* _ALPHA_PAGE_H */

Line No.	Rev	Author	Line
1	1275	phoenix	`#ifndef _ALPHA_PAGE_H`
2			`#define _ALPHA_PAGE_H`
3
4			`#include <asm/pal.h>`
5
6			`/* PAGE_SHIFT determines the page size */`
7			`#define PAGE_SHIFT 13`
8			`#define PAGE_SIZE (1UL << PAGE_SHIFT)`
9			`#define PAGE_MASK (~(PAGE_SIZE-1))`
10
11			`#ifdef __KERNEL__`
12
13			`#ifndef __ASSEMBLY__`
14
15			`#define STRICT_MM_TYPECHECKS`
16
17			`extern void clear_page(void *page);`
18			`#define clear_user_page(page, vaddr) clear_page(page)`
19
20			`extern void copy_page(void * _to, void * _from);`
21			`#define copy_user_page(to, from, vaddr) copy_page(to, from)`
22
23			`#ifdef STRICT_MM_TYPECHECKS`
24			`/*`
25			`* These are used to make use of C type-checking..`
26			`*/`
27			`typedef struct { unsigned long pte; } pte_t;`
28			`typedef struct { unsigned long pmd; } pmd_t;`
29			`typedef struct { unsigned long pgd; } pgd_t;`
30			`typedef struct { unsigned long pgprot; } pgprot_t;`
31
32			`#define pte_val(x) ((x).pte)`
33			`#define pmd_val(x) ((x).pmd)`
34			`#define pgd_val(x) ((x).pgd)`
35			`#define pgprot_val(x) ((x).pgprot)`
36
37			`#define __pte(x) ((pte_t) { (x) } )`
38			`#define __pmd(x) ((pmd_t) { (x) } )`
39			`#define __pgd(x) ((pgd_t) { (x) } )`
40			`#define __pgprot(x) ((pgprot_t) { (x) } )`
41
42			`#else`
43			`/*`
44			`* .. while these make it easier on the compiler`
45			`*/`
46			`typedef unsigned long pte_t;`
47			`typedef unsigned long pmd_t;`
48			`typedef unsigned long pgd_t;`
49			`typedef unsigned long pgprot_t;`
50
51			`#define pte_val(x) (x)`
52			`#define pmd_val(x) (x)`
53			`#define pgd_val(x) (x)`
54			`#define pgprot_val(x) (x)`
55
56			`#define __pte(x) (x)`
57			`#define __pgd(x) (x)`
58			`#define __pgprot(x) (x)`
59
60			`#endif /* STRICT_MM_TYPECHECKS */`
61
62			`#define BUG() \`
63			`do { \`
64			`printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \`
65			`__asm__ __volatile__("call_pal %0 # bugchk" : : "i" (PAL_bugchk)); \`
66			`} while (0)`
67			`#define PAGE_BUG(page) BUG()`
68
69			`/* Pure 2^n version of get_order */`
70			`extern __inline__ int get_order(unsigned long size)`
71			`{`
72			`int order;`
73
74			`size = (size-1) >> (PAGE_SHIFT-1);`
75			`order = -1;`
76			`do {`
77			`size >>= 1;`
78			`order++;`
79			`} while (size);`
80			`return order;`
81			`}`
82
83			`#endif /* !__ASSEMBLY__ */`
84
85			`/* to align the pointer to the (next) page boundary */`
86			`#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)`
87
88			`#ifdef USE_48_BIT_KSEG`
89			`#define PAGE_OFFSET 0xffff800000000000`
90			`#else`
91			`#define PAGE_OFFSET 0xfffffc0000000000`
92			`#endif`
93
94			`#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)`
95			`#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))`
96			`#ifndef CONFIG_DISCONTIGMEM`
97			`#define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT))`
98			`#define VALID_PAGE(page) (((page) - mem_map) < max_mapnr)`
99			`#endif /* CONFIG_DISCONTIGMEM */`
100
101			`#define VM_DATA_DEFAULT_FLAGS (VM_READ \| VM_WRITE \| VM_EXEC \| \`
102			`VM_MAYREAD \| VM_MAYWRITE \| VM_MAYEXEC)`
103
104			`#endif /* __KERNEL__ */`
105
106			`#endif /* _ALPHA_PAGE_H */`

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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [include/] [asm-alpha/] [page.h] - Blame information for rev 1780