LXR linux/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 */
  23typedef struct { unsigned long pte; } pte_t;
  24typedef struct { unsigned long pmd[16]; } pmd_t;
  25typedef struct { unsigned long pgd; } pgd_t;
  26typedef struct { unsigned long pgprot; } pgprot_t;
  27typedef 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
  39extern unsigned long _rambase;
  40extern unsigned long _ramstart;
  41extern 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