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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2015 National Instruments
*
* (C) Copyright 2015
* Joe Hershberger <joe.hershberger@ni.com>
*/
#ifndef __MAPMEM_H
#define __MAPMEM_H
/* Define a null map_sysmem() if the architecture doesn't use it */
# ifdef CONFIG_ARCH_MAP_SYSMEM
#include <asm/io.h>
# else
#include <linux/types.h>
static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
{
return (void *)(uintptr_t)paddr;
}
static inline void unmap_sysmem(const void *vaddr)
{
}
static inline phys_addr_t map_to_sysmem(const void *ptr)
{
return (phys_addr_t)(uintptr_t)ptr;
}
/**
* nomap_sysmem() - pass through an address unchanged
*
* This is used to indicate an address which should NOT be mapped, e.g. in
* SMBIOS tables. Using this function instead of a case shows that the sandbox
* conversion has been done
*/
static inline void *nomap_sysmem(phys_addr_t paddr, unsigned long len)
{
return (void *)(uintptr_t)paddr;
}
static inline phys_addr_t nomap_to_sysmem(const void *ptr)
{
return (phys_addr_t)(uintptr_t)ptr;
}
# endif
#endif /* __MAPMEM_H */
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