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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_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
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