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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Russell King4baa9922008-08-02 10:55:55 +01002 * arch/arm/include/asm/map.h
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
4 * Copyright (C) 1999-2000 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Page table mapping constructs and function prototypes
11 */
Russell King3603ab22007-05-05 20:59:27 +010012#include <asm/io.h>
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014struct map_desc {
15 unsigned long virtual;
Deepak Saxena9769c242005-10-28 15:19:11 +010016 unsigned long pfn;
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 unsigned long length;
18 unsigned int type;
19};
20
Russell Kingdb5b7162008-09-07 12:42:51 +010021/* types 0-3 are defined in asm/io.h */
Russell Kingebb4c652008-11-09 11:18:36 +000022#define MT_UNCACHED 4
23#define MT_CACHECLEAN 5
24#define MT_MINICLEAN 6
25#define MT_LOW_VECTORS 7
26#define MT_HIGH_VECTORS 8
27#define MT_MEMORY 9
28#define MT_ROM 10
Paul Walmsleye4707dd2009-03-12 20:11:43 +010029#define MT_MEMORY_NONCACHED 11
Linus Walleijcb9d7702010-07-12 21:50:59 +010030#define MT_MEMORY_DTCM 12
31#define MT_MEMORY_ITCM 13
Russell King0af92be2007-05-05 20:28:16 +010032
Russell King092c1952006-06-24 17:34:50 +010033#ifdef CONFIG_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -070034extern void iotable_init(struct map_desc *, int);
Hiroshi DOYU69d3a842009-01-28 21:32:08 +020035
36struct mem_type;
37extern const struct mem_type *get_mem_type(unsigned int type);
38/*
39 * external interface to remap single page with appropriate type
40 */
41extern int ioremap_page(unsigned long virt, unsigned long phys,
42 const struct mem_type *mtype);
Russell King092c1952006-06-24 17:34:50 +010043#else
44#define iotable_init(map,num) do { } while (0)
45#endif