blob: 0a1f0aa92ebc78ff9881993e16d3015cb524cb96 [file] [log] [blame]
David Howellsb920de12008-02-08 04:19:31 -08001/* MN10300 Cache flushing routines
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#include <linux/module.h>
12#include <linux/mm.h>
13#include <linux/mman.h>
14#include <linux/threads.h>
15#include <asm/page.h>
16#include <asm/pgtable.h>
17#include <asm/processor.h>
18#include <asm/cacheflush.h>
19#include <asm/io.h>
20#include <asm/uaccess.h>
Akira Takeuchi8be06282010-10-27 17:28:47 +010021#include <asm/smp.h>
22#include "cache-smp.h"
David Howellsb920de12008-02-08 04:19:31 -080023
24EXPORT_SYMBOL(mn10300_icache_inv);
Akira Takeuchi8be06282010-10-27 17:28:47 +010025EXPORT_SYMBOL(mn10300_icache_inv_range);
26EXPORT_SYMBOL(mn10300_icache_inv_range2);
27EXPORT_SYMBOL(mn10300_icache_inv_page);
David Howellsb920de12008-02-08 04:19:31 -080028EXPORT_SYMBOL(mn10300_dcache_inv);
29EXPORT_SYMBOL(mn10300_dcache_inv_range);
30EXPORT_SYMBOL(mn10300_dcache_inv_range2);
31EXPORT_SYMBOL(mn10300_dcache_inv_page);
32
33#ifdef CONFIG_MN10300_CACHE_WBACK
34EXPORT_SYMBOL(mn10300_dcache_flush);
35EXPORT_SYMBOL(mn10300_dcache_flush_inv);
36EXPORT_SYMBOL(mn10300_dcache_flush_inv_range);
37EXPORT_SYMBOL(mn10300_dcache_flush_inv_range2);
38EXPORT_SYMBOL(mn10300_dcache_flush_inv_page);
39EXPORT_SYMBOL(mn10300_dcache_flush_range);
40EXPORT_SYMBOL(mn10300_dcache_flush_range2);
41EXPORT_SYMBOL(mn10300_dcache_flush_page);
42#endif
43
44/*
David Howellsb920de12008-02-08 04:19:31 -080045 * allow userspace to flush the instruction cache
46 */
47asmlinkage long sys_cacheflush(unsigned long start, unsigned long end)
48{
49 if (end < start)
50 return -EINVAL;
51
52 flush_icache_range(start, end);
53 return 0;
54}