LXR linux/arch/m68k/include/asm/page.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _M68K_PAGE_H
   3#define _M68K_PAGE_H
   4
   5#include <linux/const.h>
   6#include <asm/setup.h>
   7#include <asm/page_offset.h>
   8
   9/* PAGE_SHIFT determines the page size */
  10#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
  11#define PAGE_SHIFT      13
  12#else
  13#define PAGE_SHIFT      12
  14#endif
  15#define PAGE_SIZE       (_AC(1, UL) << PAGE_SHIFT)
  16#define PAGE_MASK       (~(PAGE_SIZE-1))
  17#define PAGE_OFFSET     (PAGE_OFFSET_RAW)
  18
  19#ifndef __ASSEMBLY__
  20
  21/*
  22 * These are used to make use of C type-checking..
  23 */
  24typedef struct { unsigned long pte; } pte_t;
  25typedef struct { unsigned long pmd[16]; } pmd_t;
  26typedef struct { unsigned long pgd; } pgd_t;
  27typedef struct { unsigned long pgprot; } pgprot_t;
  28typedef struct page *pgtable_t;
  29
  30#define pte_val(x)      ((x).pte)
  31#define pmd_val(x)      ((&x)->pmd[0])
  32#define pgd_val(x)      ((x).pgd)
  33#define pgprot_val(x)   ((x).pgprot)
  34
  35#define __pte(x)        ((pte_t) { (x) } )
  36#define __pmd(x)        ((pmd_t) { { (x) }, })
  37#define __pgd(x)        ((pgd_t) { (x) } )
  38#define __pgprot(x)     ((pgprot_t) { (x) } )
  39
  40extern unsigned long _rambase;
  41extern unsigned long _ramstart;
  42extern unsigned long _ramend;
  43
  44#endif /* !__ASSEMBLY__ */
  45
  46#ifdef CONFIG_MMU
  47#include <asm/page_mm.h>
  48#else
  49#include <asm/page_no.h>
  50#endif
  51
  52#define __phys_to_pfn(paddr)    ((unsigned long)((paddr) >> PAGE_SHIFT))
  53#define __pfn_to_phys(pfn)      PFN_PHYS(pfn)
  54
  55#define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
  56                                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
  57
  58#include <asm-generic/getorder.h>
  59
  60#endif /* _M68K_PAGE_H */
  61