mirror of https://gitee.com/openkylin/linux.git
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* arch/arm/include/asm/map.h
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*
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* Copyright (C) 1999-2000 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Page table mapping constructs and function prototypes
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*/
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#include <asm/io.h>
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struct map_desc {
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unsigned long virtual;
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unsigned long pfn;
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unsigned long length;
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unsigned int type;
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};
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/* types 0-3 are defined in asm/io.h */
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#define MT_UNCACHED 4
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#define MT_CACHECLEAN 5
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#define MT_MINICLEAN 6
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#define MT_LOW_VECTORS 7
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#define MT_HIGH_VECTORS 8
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#define MT_MEMORY 9
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#define MT_ROM 10
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#define MT_MEMORY_NONCACHED 11
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#ifdef CONFIG_MMU
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extern void iotable_init(struct map_desc *, int);
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struct mem_type;
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extern const struct mem_type *get_mem_type(unsigned int type);
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/*
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* external interface to remap single page with appropriate type
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*/
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extern int ioremap_page(unsigned long virt, unsigned long phys,
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const struct mem_type *mtype);
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#else
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#define iotable_init(map,num) do { } while (0)
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#endif
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