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 enum { 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 42 extern void iotable_init(struct map_desc *, int); 43 extern void vm_reserve_area_early(unsigned long addr, unsigned long size, 44 void *caller); 45 46 #ifdef CONFIG_DEBUG_LL 47 extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr); 48 extern void debug_ll_io_init(void); 49 #else 50 static inline void debug_ll_io_init(void) {} 51 #endif 52 53 struct mem_type; 54 extern const struct mem_type *get_mem_type(unsigned int type); 55 /* 56 * external interface to remap single page with appropriate type 57 */ 58 extern 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