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/*
* linux/include/asm-arm/proc-armo/page.h
*
* Copyright (C) 1995, 1996 Russell King
*/
#ifndef __ASM_PROC_PAGE_H
#define __ASM_PROC_PAGE_H
#include <linux/config.h>
/* PAGE_SHIFT determines the page size. This is configurable. */
#if defined(CONFIG_PAGESIZE_8)
#define PAGE_SHIFT 13 /* 8K */
#elif defined(CONFIG_PAGESIZE_16)
#define PAGE_SHIFT 14 /* 16K */
#else /* default */
#define PAGE_SHIFT 15 /* 32K */
#endif
#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; } 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)
#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 unsigned long pmd_t;
typedef unsigned long pgd_t;
typedef unsigned long pgprot_t;
#define pte_val(x) (x)
#define pmd_val(x) (x)
#define pgd_val(x) (x)
#define pgprot_val(x) (x)
#define __pte(x) (x)
#define __pmd(x) (x)
#define __pgd(x) (x)
#define __pgprot(x) (x)
#endif
/* 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 0x02000000
#define MAP_NR(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> PAGE_SHIFT)
#endif /* __KERNEL__ */
#endif /* __ASM_PROC_PAGE_H */
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