Merge remote-tracking branch 'remotes/powerpc/topic/xive' into kvm-ppc-next
[linux/fpc-iii.git] / arch / frv / include / asm / virtconvert.h
blobb26d70ab9111937f5985e1c9bce24dc4c3814a5c
1 /* virtconvert.h: virtual/physical/page address conversion
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 #ifndef _ASM_VIRTCONVERT_H
12 #define _ASM_VIRTCONVERT_H
15 * Macros used for converting between virtual and physical mappings.
18 #ifdef __KERNEL__
20 #include <asm/setup.h>
22 #ifdef CONFIG_MMU
24 #define phys_to_virt(vaddr) ((void *) ((unsigned long)(vaddr) + PAGE_OFFSET))
25 #define virt_to_phys(vaddr) ((unsigned long) (vaddr) - PAGE_OFFSET)
27 #else
29 #define phys_to_virt(vaddr) ((void *) (vaddr))
30 #define virt_to_phys(vaddr) ((unsigned long) (vaddr))
32 #endif
34 #define virt_to_bus virt_to_phys
35 #define bus_to_virt phys_to_virt
37 #define __page_address(page) (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
38 #define page_to_phys(page) virt_to_phys((void *)__page_address(page))
40 #endif
41 #endif