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 */
25enum {
26	MT_UNCACHED = 4,
27	MT_CACHECLEAN,
28	MT_MINICLEAN,
29	MT_LOW_VECTORS,
30	MT_HIGH_VECTORS,
31	MT_MEMORY_RWX,
32	MT_MEMORY_RW,
33	MT_ROM,
34	MT_MEMORY_RWX_NONCACHED,
35	MT_MEMORY_RW_DTCM,
36	MT_MEMORY_RWX_ITCM,
37	MT_MEMORY_RW_SO,
38	MT_MEMORY_DMA_READY,
39};
40
41#ifdef CONFIG_MMU
42extern void iotable_init(struct map_desc *, int);
43extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
44				  void *caller);
45
46#ifdef CONFIG_DEBUG_LL
47extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr);
48extern void debug_ll_io_init(void);
49#else
50static inline void debug_ll_io_init(void) {}
51#endif
52
53struct mem_type;
54extern const struct mem_type *get_mem_type(unsigned int type);
55/*
56 * external interface to remap single page with appropriate type
57 */
58extern int ioremap_page(unsigned long virt, unsigned long phys,
59			const struct mem_type *mtype);
60#else
61#define iotable_init(map,num)	do { } while (0)
62#define vm_reserve_area_early(a,s,c)	do { } while (0)
63#endif
64
65#endif
66