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#ifndef _M68K_PAGE_H

#define _M68K_PAGE_H

/* PAGE_SHIFT determines the page size */

#define PAGE_SHIFT      12

#define PAGE_SIZE       (1UL << PAGE_SHIFT)

#define PAGE_MASK       (~(PAGE_SIZE-1))

#ifdef __KERNEL__

#define STRICT_MM_TYPECHECKS

#ifdef STRICT_MM_TYPECHECKS

/*

 * 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) } )

#else

/*

 * .. while these make it easier on the compiler

 */

typedef unsigned long pte_t;

typedef struct { unsigned long pmd[16]; } pmd_t;

typedef unsigned long pgd_t;

typedef unsigned long pgprot_t;

#define pte_val(x)      (x)

#define pmd_val(x)      ((&x)->pmd[0])

#define pgd_val(x)      (x)

#define pgprot_val(x)   (x)

#define __pte(x)        (x)

#define __pmd(x)        ((pmd_t) { (x) } )

#define __pgd(x)        (x)

#define __pgprot(x)     (x)

#endif

/* m68k_is040or060 is != 0 for a '040 or higher; used numbers are 4 for 68040

 * and 6 for 68060 */

extern int m68k_is040or060;

/* This is the cache mode to be used for pages containing page descriptors for

 * processors >= '040. It is in pte_mknocache(), and the variable is defined

 * and initialized in head.S */

extern int m68k_pgtable_cachemode;

/* to align the pointer to the (next) page boundary */

#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)

/* This handles the memory map.. */

#define PAGE_OFFSET             0

#define MAP_NR(addr)            (((unsigned long)(addr)) >> PAGE_SHIFT)

#define MAP_PAGE_RESERVED       (1<<15)

#endif /* __KERNEL__ */

#endif /* _M68K_PAGE_H */