Release 4.10 arch/frv/include/asm/virtconvert.h

/* virtconvert.h: virtual/physical/page address conversion
 *
 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
#ifndef _ASM_VIRTCONVERT_H

#define _ASM_VIRTCONVERT_H

/*
 * Macros used for converting between virtual and physical mappings.
 */

#ifdef __KERNEL__

#include <asm/setup.h>

#ifdef CONFIG_MMU


#define phys_to_virt(vaddr)	((void *) ((unsigned long)(vaddr) + PAGE_OFFSET))

#define virt_to_phys(vaddr)	((unsigned long) (vaddr) - PAGE_OFFSET)

#else


#define phys_to_virt(vaddr)	((void *) (vaddr))

#define virt_to_phys(vaddr)	((unsigned long) (vaddr))

#endif


#define virt_to_bus virt_to_phys

#define bus_to_virt phys_to_virt


#define __page_address(page)	(PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))

#define page_to_phys(page)	virt_to_phys((void *)__page_address(page))

#endif
#endif
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Directory: arch/frv/include/asm

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