mirror of https://gitee.com/openkylin/linux.git
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
|
|
* 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>
|
|
|
|
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
|
|
|
|
#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
|