Linux kernel mirror (for testing)
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1/*
2 * arch/arm/include/asm/map.h
3 *
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 */
12#ifndef __ASM_MACH_MAP_H
13#define __ASM_MACH_MAP_H
14
15#include <asm/io.h>
16
17struct map_desc {
18 unsigned long virtual;
19 unsigned long pfn;
20 unsigned long length;
21 unsigned int type;
22};
23
24/* types 0-3 are defined in asm/io.h */
25#define MT_UNCACHED 4
26#define MT_CACHECLEAN 5
27#define MT_MINICLEAN 6
28#define MT_LOW_VECTORS 7
29#define MT_HIGH_VECTORS 8
30#define MT_MEMORY 9
31#define MT_ROM 10
32#define MT_MEMORY_NONCACHED 11
33#define MT_MEMORY_DTCM 12
34#define MT_MEMORY_ITCM 13
35#define MT_MEMORY_SO 14
36#define MT_MEMORY_DMA_READY 15
37
38#ifdef CONFIG_MMU
39extern void iotable_init(struct map_desc *, int);
40extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
41 void *caller);
42
43#ifdef CONFIG_DEBUG_LL
44extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr);
45extern void debug_ll_io_init(void);
46#else
47static inline void debug_ll_io_init(void) {}
48#endif
49
50struct mem_type;
51extern const struct mem_type *get_mem_type(unsigned int type);
52/*
53 * external interface to remap single page with appropriate type
54 */
55extern int ioremap_page(unsigned long virt, unsigned long phys,
56 const struct mem_type *mtype);
57#else
58#define iotable_init(map,num) do { } while (0)
59#define vm_reserve_area_early(a,s,c) do { } while (0)
60#endif
61
62#endif