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| /* SPDX-License-Identifier: GPL-2.0-only */
| /*
| * arch/arm/include/asm/map.h
| *
| * Copyright (C) 1999-2000 Russell King
| *
| * Page table mapping constructs and function prototypes
| */
| #ifndef __ASM_MACH_MAP_H
| #define __ASM_MACH_MAP_H
|
| #include <asm/io.h>
|
| struct map_desc {
| unsigned long virtual;
| unsigned long pfn;
| unsigned long length;
| unsigned int type;
| };
|
| /* types 0-3 are defined in asm/io.h */
| enum {
| MT_UNCACHED = 4,
| MT_CACHECLEAN,
| MT_MINICLEAN,
| MT_LOW_VECTORS,
| MT_HIGH_VECTORS,
| MT_MEMORY_RWX,
| MT_MEMORY_RW,
| MT_MEMORY_RO,
| MT_ROM,
| MT_MEMORY_RWX_NONCACHED,
| MT_MEMORY_RW_DTCM,
| MT_MEMORY_RWX_ITCM,
| MT_MEMORY_RW_SO,
| MT_MEMORY_DMA_READY,
| };
|
| #ifdef CONFIG_MMU
| extern void iotable_init(struct map_desc *, int);
| extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
| void *caller);
| extern void create_mapping_late(struct mm_struct *mm, struct map_desc *md,
| bool ng);
|
| #ifdef CONFIG_DEBUG_LL
| extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr);
| extern void debug_ll_io_init(void);
| #else
| static inline void debug_ll_io_init(void) {}
| #endif
|
| struct mem_type;
| extern const struct mem_type *get_mem_type(unsigned int type);
| /*
| * external interface to remap single page with appropriate type
| */
| extern int ioremap_page(unsigned long virt, unsigned long phys,
| const struct mem_type *mtype);
| #else
| #define iotable_init(map,num) do { } while (0)
| #define vm_reserve_area_early(a,s,c) do { } while (0)
| #endif
|
| #endif
|
|
