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