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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-m68k/] [page.h] - Blame information for rev 1765

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#ifndef _M68K_PAGE_H
#define _M68K_PAGE_H
 
#include <linux/config.h>
 
/* PAGE_SHIFT determines the page size */
#ifndef CONFIG_SUN3
#define PAGE_SHIFT      (12)
#else
#define PAGE_SHIFT      (13)
#endif
#ifdef __ASSEMBLY__
#define PAGE_SIZE       (1 << PAGE_SHIFT)
#else
#define PAGE_SIZE       (1UL << PAGE_SHIFT)
#endif
#define PAGE_MASK       (~(PAGE_SIZE-1))
 
#ifdef __KERNEL__
 
#include <asm/setup.h>
 
#if PAGE_SHIFT < 13
#define KTHREAD_SIZE (8192)
#else
#define KTHREAD_SIZE PAGE_SIZE
#endif
 
#ifndef __ASSEMBLY__
 
#define get_user_page(vaddr)            __get_free_page(GFP_KERNEL)
#define free_user_page(page, addr)      free_page(addr)
 
/*
 * We don't need to check for alignment etc.
 */
#ifdef CPU_M68040_OR_M68060_ONLY
static inline void copy_page(void *to, void *from)
{
  unsigned long tmp;
 
  __asm__ __volatile__("1:\t"
                       ".chip 68040\n\t"
                       "move16 %1@+,%0@+\n\t"
                       "move16 %1@+,%0@+\n\t"
                       ".chip 68k\n\t"
                       "dbra  %2,1b\n\t"
                       : "=a" (to), "=a" (from), "=d" (tmp)
                       : "0" (to), "1" (from) , "2" (PAGE_SIZE / 32 - 1)
                       );
}
 
static inline void clear_page(void *page)
{
        unsigned long data, tmp;
        void *sp = page;
 
        data = 0;
 
        *((unsigned long *)(page))++ = 0;
        *((unsigned long *)(page))++ = 0;
        *((unsigned long *)(page))++ = 0;
        *((unsigned long *)(page))++ = 0;
 
        __asm__ __volatile__("1:\t"
                             ".chip 68040\n\t"
                             "move16 %2@+,%0@+\n\t"
                             ".chip 68k\n\t"
                             "subqw  #8,%2\n\t"
                             "subqw  #8,%2\n\t"
                             "dbra   %1,1b\n\t"
                             : "=a" (page), "=d" (tmp)
                             : "a" (sp), "0" (page),
                               "1" ((PAGE_SIZE - 16) / 16 - 1));
}
 
#else
#define clear_page(page)        memset((page), 0, PAGE_SIZE)
#define copy_page(to,from)      memcpy((to), (from), PAGE_SIZE)
#endif
 
#define clear_user_page(page, vaddr)    clear_page(page)
#define copy_user_page(to, from, vaddr) copy_page(to, from)
 
/*
 * These are used to make use of C type-checking..
 */
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd[16]; } 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[0])
#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) } )
 
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
 
/* Pure 2^n version of get_order */
static 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__ */
 
#include <asm/page_offset.h>
 
#define PAGE_OFFSET             (PAGE_OFFSET_RAW)
 
#ifndef __ASSEMBLY__
 
#ifndef CONFIG_SUN3
 
#define WANT_PAGE_VIRTUAL
#ifdef CONFIG_SINGLE_MEMORY_CHUNK
extern unsigned long m68k_memoffset;
 
#define __pa(vaddr)             ((unsigned long)(vaddr)+m68k_memoffset)
#define __va(paddr)             ((void *)((unsigned long)(paddr)-m68k_memoffset))
#else
#define __pa(vaddr)             virt_to_phys((void *)vaddr)
#define __va(paddr)             phys_to_virt((unsigned long)paddr)
#endif
 
#else   /* !CONFIG_SUN3 */
/* This #define is a horrible hack to suppress lots of warnings. --m */
#define __pa(x) ___pa((unsigned long)x)
static inline unsigned long ___pa(unsigned long x)
{
     if(x == 0)
          return 0;
     if(x >= PAGE_OFFSET)
        return (x-PAGE_OFFSET);
     else
        return (x+0x2000000);
}
 
static inline void *__va(unsigned long x)
{
     if(x == 0)
          return (void *)0;
 
     if(x < 0x2000000)
        return (void *)(x+PAGE_OFFSET);
     else
        return (void *)(x-0x2000000);
}
#endif  /* CONFIG_SUN3 */
 
#define MAP_NR(addr)            (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
#define virt_to_page(kaddr)     (mem_map + (((unsigned long)(kaddr)-PAGE_OFFSET) >> PAGE_SHIFT))
#define VALID_PAGE(page)        ((page - mem_map) < max_mapnr)
 
#ifdef CONFIG_DEBUG_BUGVERBOSE
#ifndef CONFIG_SUN3
#define BUG() do { \
        printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
        asm volatile("illegal"); \
} while (0)
#else
#define BUG() do { \
        printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
        panic("BUG!"); \
} while (0)
#endif
#else
#define BUG() do { \
        asm volatile("illegal"); \
} while (0)
#endif
 
#define PAGE_BUG(page) do { \
        BUG(); \
} while (0)
 
#endif /* __ASSEMBLY__ */
 
#define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
                                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
#endif /* __KERNEL__ */
 
#endif /* _M68K_PAGE_H */

Line No.	Rev	Author	Line
1	1276	phoenix	`#ifndef _M68K_PAGE_H`
2			`#define _M68K_PAGE_H`
3
4			`#include <linux/config.h>`
5
6			`/* PAGE_SHIFT determines the page size */`
7			`#ifndef CONFIG_SUN3`
8			`#define PAGE_SHIFT (12)`
9			`#else`
10			`#define PAGE_SHIFT (13)`
11			`#endif`
12			`#ifdef __ASSEMBLY__`
13			`#define PAGE_SIZE (1 << PAGE_SHIFT)`
14			`#else`
15			`#define PAGE_SIZE (1UL << PAGE_SHIFT)`
16			`#endif`
17			`#define PAGE_MASK (~(PAGE_SIZE-1))`
18
19			`#ifdef __KERNEL__`
20
21			`#include <asm/setup.h>`
22
23			`#if PAGE_SHIFT < 13`
24			`#define KTHREAD_SIZE (8192)`
25			`#else`
26			`#define KTHREAD_SIZE PAGE_SIZE`
27			`#endif`
28
29			`#ifndef __ASSEMBLY__`
30
31			`#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)`
32			`#define free_user_page(page, addr) free_page(addr)`
33
34			`/*`
35			`* We don't need to check for alignment etc.`
36			`*/`
37			`#ifdef CPU_M68040_OR_M68060_ONLY`
38			`static inline void copy_page(void to, void from)`
39			`{`
40			`unsigned long tmp;`
41
42			`__asm__ __volatile__("1:\t"`
43			`".chip 68040\n\t"`
44			`"move16 %1@+,%0@+\n\t"`
45			`"move16 %1@+,%0@+\n\t"`
46			`".chip 68k\n\t"`
47			`"dbra %2,1b\n\t"`
48			`: "=a" (to), "=a" (from), "=d" (tmp)`
49			`: "0" (to), "1" (from) , "2" (PAGE_SIZE / 32 - 1)`
50			`);`
51			`}`
52
53			`static inline void clear_page(void *page)`
54			`{`
55			`unsigned long data, tmp;`
56			`void *sp = page;`
57
58			`data = 0;`
59
60			`((unsigned long )(page))++ = 0;`
61			`((unsigned long )(page))++ = 0;`
62			`((unsigned long )(page))++ = 0;`
63			`((unsigned long )(page))++ = 0;`
64
65			`__asm__ __volatile__("1:\t"`
66			`".chip 68040\n\t"`
67			`"move16 %2@+,%0@+\n\t"`
68			`".chip 68k\n\t"`
69			`"subqw #8,%2\n\t"`
70			`"subqw #8,%2\n\t"`
71			`"dbra %1,1b\n\t"`
72			`: "=a" (page), "=d" (tmp)`
73			`: "a" (sp), "0" (page),`
74			`"1" ((PAGE_SIZE - 16) / 16 - 1));`
75			`}`
76
77			`#else`
78			`#define clear_page(page) memset((page), 0, PAGE_SIZE)`
79			`#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)`
80			`#endif`
81
82			`#define clear_user_page(page, vaddr) clear_page(page)`
83			`#define copy_user_page(to, from, vaddr) copy_page(to, from)`
84
85			`/*`
86			`* These are used to make use of C type-checking..`
87			`*/`
88			`typedef struct { unsigned long pte; } pte_t;`
89			`typedef struct { unsigned long pmd[16]; } pmd_t;`
90			`typedef struct { unsigned long pgd; } pgd_t;`
91			`typedef struct { unsigned long pgprot; } pgprot_t;`
92
93			`#define pte_val(x) ((x).pte)`
94			`#define pmd_val(x) ((&x)->pmd[0])`
95			`#define pgd_val(x) ((x).pgd)`
96			`#define pgprot_val(x) ((x).pgprot)`
97
98			`#define __pte(x) ((pte_t) { (x) } )`
99			`#define __pmd(x) ((pmd_t) { (x) } )`
100			`#define __pgd(x) ((pgd_t) { (x) } )`
101			`#define __pgprot(x) ((pgprot_t) { (x) } )`
102
103			`/* to align the pointer to the (next) page boundary */`
104			`#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)`
105
106			`/* Pure 2^n version of get_order */`
107			`static inline int get_order(unsigned long size)`
108			`{`
109			`int order;`
110
111			`size = (size-1) >> (PAGE_SHIFT-1);`
112			`order = -1;`
113			`do {`
114			`size >>= 1;`
115			`order++;`
116			`} while (size);`
117			`return order;`
118			`}`
119
120			`#endif /* !__ASSEMBLY__ */`
121
122			`#include <asm/page_offset.h>`
123
124			`#define PAGE_OFFSET (PAGE_OFFSET_RAW)`
125
126			`#ifndef __ASSEMBLY__`
127
128			`#ifndef CONFIG_SUN3`
129
130			`#define WANT_PAGE_VIRTUAL`
131			`#ifdef CONFIG_SINGLE_MEMORY_CHUNK`
132			`extern unsigned long m68k_memoffset;`
133
134			`#define __pa(vaddr) ((unsigned long)(vaddr)+m68k_memoffset)`
135			`#define __va(paddr) ((void *)((unsigned long)(paddr)-m68k_memoffset))`
136			`#else`
137			`#define __pa(vaddr) virt_to_phys((void *)vaddr)`
138			`#define __va(paddr) phys_to_virt((unsigned long)paddr)`
139			`#endif`
140
141			`#else /* !CONFIG_SUN3 */`
142			`/* This #define is a horrible hack to suppress lots of warnings. --m */`
143			`#define __pa(x) ___pa((unsigned long)x)`
144			`static inline unsigned long ___pa(unsigned long x)`
145			`{`
146			`if(x == 0)`
147			`return 0;`
148			`if(x >= PAGE_OFFSET)`
149			`return (x-PAGE_OFFSET);`
150			`else`
151			`return (x+0x2000000);`
152			`}`
153
154			`static inline void *__va(unsigned long x)`
155			`{`
156			`if(x == 0)`
157			`return (void *)0;`
158
159			`if(x < 0x2000000)`
160			`return (void *)(x+PAGE_OFFSET);`
161			`else`
162			`return (void *)(x-0x2000000);`
163			`}`
164			`#endif /* CONFIG_SUN3 */`
165
166			`#define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)`
167			`#define virt_to_page(kaddr) (mem_map + (((unsigned long)(kaddr)-PAGE_OFFSET) >> PAGE_SHIFT))`
168			`#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)`
169
170			`#ifdef CONFIG_DEBUG_BUGVERBOSE`
171			`#ifndef CONFIG_SUN3`
172			`#define BUG() do { \`
173			`printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \`
174			`asm volatile("illegal"); \`
175			`} while (0)`
176			`#else`
177			`#define BUG() do { \`
178			`printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \`
179			`panic("BUG!"); \`
180			`} while (0)`
181			`#endif`
182			`#else`
183			`#define BUG() do { \`
184			`asm volatile("illegal"); \`
185			`} while (0)`
186			`#endif`
187
188			`#define PAGE_BUG(page) do { \`
189			`BUG(); \`
190			`} while (0)`
191
192			`#endif /* __ASSEMBLY__ */`
193
194			`#define VM_DATA_DEFAULT_FLAGS (VM_READ \| VM_WRITE \| VM_EXEC \| \`
195			`VM_MAYREAD \| VM_MAYWRITE \| VM_MAYEXEC)`
196
197			`#endif /* __KERNEL__ */`
198
199			`#endif /* _M68K_PAGE_H */`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-m68k/] [page.h] - Blame information for rev 1765