map.h

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/*
 *  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
 */
#ifndef __ASM_MACH_MAP_H
#define __ASM_MACH_MAP_H

#include <asm/io.h>

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
#define MT_MEMORY_SO        14
#define MT_MEMORY_DMA_READY 15

#ifdef CONFIG_MMU
extern void iotable_init(struct map_desc *, int);
extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
                  void *caller);

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)
#define vm_reserve_area_early(a,s,c)    do { } while (0)
#endif

#endif