blob: 2759f2d483844c08c0c939dff3a1f77833fae31a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/arch/m32r/mm/ioremap-nommu.c
3 *
4 * Copyright (c) 2001, 2002 Hiroyuki Kondo
5 *
6 * Taken from mips version.
7 * (C) Copyright 1995 1996 Linus Torvalds
8 * (C) Copyright 2001 Ralf Baechle
9 */
10
11/*
12 * This file is subject to the terms and conditions of the GNU General Public
13 * License. See the file "COPYING" in the main directory of this archive
14 * for more details.
15 *
16 */
17
18#include <linux/module.h>
19#include <asm/addrspace.h>
20#include <asm/byteorder.h>
21
22#include <linux/vmalloc.h>
23#include <asm/io.h>
24#include <asm/pgalloc.h>
25#include <asm/cacheflush.h>
26#include <asm/tlbflush.h>
27
28
29/*
30 * Remap an arbitrary physical address space into the kernel virtual
31 * address space. Needed when the kernel wants to access high addresses
32 * directly.
33 *
34 * NOTE! We need to allow non-page-aligned mappings too: we will obviously
35 * have to convert them into an offset in a page-aligned mapping, but the
36 * caller shouldn't need to know that small detail.
37 */
38
39#define IS_LOW512(addr) (!((unsigned long)(addr) & ~0x1fffffffUL))
40
41void __iomem *
42__ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
43{
44 return (void *)phys_addr;
45}
46
47#define IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == KSEG1)
48
49void iounmap(volatile void __iomem *addr)
50{
51}
52