arch/m68k/include/asm/page.h

   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 */