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map.h

/*
 *  arch/arm/include/asm/map.h
 *
 *  Copyright (C) 1999-2000 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  Page table mapping constructs and function prototypes
 */
#include <asm/io.h>

00014 struct map_desc {
      unsigned long virtual;
      unsigned long pfn;
      unsigned long length;
      unsigned int type;
};

/* types 0-3 are defined in asm/io.h */
#define MT_UNCACHED           4
#define MT_CACHECLEAN         5
#define MT_MINICLEAN          6
#define MT_LOW_VECTORS        7
#define MT_HIGH_VECTORS       8
#define MT_MEMORY       9
#define MT_ROM                10
#define MT_MEMORY_NONCACHED   11
#define MT_MEMORY_DTCM        12
#define MT_MEMORY_ITCM        13

#ifdef CONFIG_MMU
extern void iotable_init(struct map_desc *, int);

struct mem_type;
extern const struct mem_type *get_mem_type(unsigned int type);
/*
 * external interface to remap single page with appropriate type
 */
extern int ioremap_page(unsigned long virt, unsigned long phys,
                  const struct mem_type *mtype);
#else
#define iotable_init(map,num) do { } while (0)
#endif

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