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Linux/arch/m68k/include/asm/page.h

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  1 #ifndef _M68K_PAGE_H
  2 #define _M68K_PAGE_H
  3 
  4 #include <linux/const.h>
  5 #include <asm/setup.h>
  6 #include <asm/page_offset.h>
  7 
  8 /* PAGE_SHIFT determines the page size */
  9 #if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
 10 #define PAGE_SHIFT      13
 11 #else
 12 #define PAGE_SHIFT      12
 13 #endif
 14 #define PAGE_SIZE       (_AC(1, UL) << PAGE_SHIFT)
 15 #define PAGE_MASK       (~(PAGE_SIZE-1))
 16 #define PAGE_OFFSET     (PAGE_OFFSET_RAW)
 17 
 18 #ifndef __ASSEMBLY__
 19 
 20 /*
 21  * These are used to make use of C type-checking..
 22  */
 23 typedef struct { unsigned long pte; } pte_t;
 24 typedef struct { unsigned long pmd[16]; } pmd_t;
 25 typedef struct { unsigned long pgd; } pgd_t;
 26 typedef struct { unsigned long pgprot; } pgprot_t;
 27 typedef struct page *pgtable_t;
 28 
 29 #define pte_val(x)      ((x).pte)
 30 #define pmd_val(x)      ((&x)->pmd[0])
 31 #define pgd_val(x)      ((x).pgd)
 32 #define pgprot_val(x)   ((x).pgprot)
 33 
 34 #define __pte(x)        ((pte_t) { (x) } )
 35 #define __pmd(x)        ((pmd_t) { (x) } )
 36 #define __pgd(x)        ((pgd_t) { (x) } )
 37 #define __pgprot(x)     ((pgprot_t) { (x) } )
 38 
 39 extern unsigned long _rambase;
 40 extern unsigned long _ramstart;
 41 extern unsigned long _ramend;
 42 
 43 #endif /* !__ASSEMBLY__ */
 44 
 45 #ifdef CONFIG_MMU
 46 #include <asm/page_mm.h>
 47 #else
 48 #include <asm/page_no.h>
 49 #endif
 50 
 51 #define __phys_to_pfn(paddr)    ((unsigned long)((paddr) >> PAGE_SHIFT))
 52 #define __pfn_to_phys(pfn)      PFN_PHYS(pfn)
 53 
 54 #define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
 55                                  VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 56 
 57 #include <asm-generic/getorder.h>
 58 
 59 #endif /* _M68K_PAGE_H */
 60 

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