| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /* |
| 3 | * arch/arm/include/asm/map.h |
| 4 | * |
| 5 | * Copyright (C) 1999-2000 Russell King |
| 6 | * |
| 7 | * Page table mapping constructs and function prototypes |
| 8 | */ |
| 9 | #ifndef __ASM_MACH_MAP_H |
| 10 | #define __ASM_MACH_MAP_H |
| 11 | |
| 12 | #include <asm/io.h> |
| 13 | |
| 14 | struct map_desc { |
| 15 | unsigned long virtual; |
| 16 | unsigned long pfn; |
| 17 | unsigned long length; |
| 18 | unsigned int type; |
| 19 | }; |
| 20 | |
| 21 | /* types 0-3 are defined in asm/io.h */ |
| 22 | enum { |
| 23 | MT_UNCACHED = 4, |
| 24 | MT_CACHECLEAN, |
| 25 | MT_MINICLEAN, |
| 26 | MT_LOW_VECTORS, |
| 27 | MT_HIGH_VECTORS, |
| 28 | MT_MEMORY_RWX, |
| 29 | MT_MEMORY_RW, |
| 30 | MT_MEMORY_RO, |
| 31 | MT_ROM, |
| 32 | MT_MEMORY_RWX_NONCACHED, |
| 33 | MT_MEMORY_RW_DTCM, |
| 34 | MT_MEMORY_RWX_ITCM, |
| 35 | MT_MEMORY_RW_SO, |
| 36 | MT_MEMORY_DMA_READY, |
| 37 | }; |
| 38 | |
| 39 | #ifdef CONFIG_MMU |
| 40 | extern void iotable_init(struct map_desc *, int); |
| 41 | extern void vm_reserve_area_early(unsigned long addr, unsigned long size, |
| 42 | void *caller); |
| 43 | extern void create_mapping_late(struct mm_struct *mm, struct map_desc *md, |
| 44 | bool ng); |
| 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 |