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-rw-r--r--arch/sh/mm/mmap.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
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1/*
2 * arch/sh/mm/mmap.c
3 *
4 * Copyright (C) 2008 Paul Mundt
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10#include <linux/io.h>
11#include <linux/mm.h>
12#include <asm/page.h>
13
14/*
15 * You really shouldn't be using read() or write() on /dev/mem. This
16 * might go away in the future.
17 */
18int valid_phys_addr_range(unsigned long addr, size_t count)
19{
20 if (addr < __MEMORY_START)
21 return 0;
22 if (addr + count > __pa(high_memory))
23 return 0;
24
25 return 1;
26}
27
28int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
29{
30 return 1;
31}