1 /* kmap.c: ioremapping handlers
3 * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 * - Derived from arch/m68k/mm/kmap.c
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
13 #include <linux/config.h>
15 #include <linux/kernel.h>
16 #include <linux/string.h>
17 #include <linux/types.h>
18 #include <linux/vmalloc.h>
20 #include <asm/setup.h>
21 #include <asm/segment.h>
23 #include <asm/pgalloc.h>
25 #include <asm/system.h>
29 /*****************************************************************************/
31 * Map some physical address range into the kernel address space.
34 void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
36 return (void *)physaddr;
40 * Unmap a ioremap()ed region again
42 void iounmap(void *addr)
47 * __iounmap unmaps nearly everything, so be careful
48 * it doesn't free currently pointer/page tables anymore but it
49 * wans't used anyway and might be added later.
51 void __iounmap(void *addr, unsigned long size)
56 * Set new cache mode for some kernel address space.
57 * The caller must push data for that range itself, if such data may already
60 void kernel_set_cachemode(void *addr, unsigned long size, int cmode)