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Linux/arch/arm/include/asm/mach/map.h

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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 
 17 struct 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
 39 extern void iotable_init(struct map_desc *, int);
 40 extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
 41                                   void *caller);
 42 
 43 #ifdef CONFIG_DEBUG_LL
 44 extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr);
 45 extern void debug_ll_io_init(void);
 46 #else
 47 static inline void debug_ll_io_init(void) {}
 48 #endif
 49 
 50 struct mem_type;
 51 extern const struct mem_type *get_mem_type(unsigned int type);
 52 /*
 53  * external interface to remap single page with appropriate type
 54  */
 55 extern 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
 63 

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