linux/arch/mn10300/mm/cache.c
Akira Takeuchi 8be0628923 MN10300: Cache: Implement SMP global cache flushing
Implement SMP global cache flushing for MN10300.  This will be used by the AM34
which is SMP capable.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2010-10-27 17:28:47 +01:00

54 lines
1.6 KiB
C

/* MN10300 Cache flushing routines
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/threads.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/smp.h>
#include "cache-smp.h"
EXPORT_SYMBOL(mn10300_icache_inv);
EXPORT_SYMBOL(mn10300_icache_inv_range);
EXPORT_SYMBOL(mn10300_icache_inv_range2);
EXPORT_SYMBOL(mn10300_icache_inv_page);
EXPORT_SYMBOL(mn10300_dcache_inv);
EXPORT_SYMBOL(mn10300_dcache_inv_range);
EXPORT_SYMBOL(mn10300_dcache_inv_range2);
EXPORT_SYMBOL(mn10300_dcache_inv_page);
#ifdef CONFIG_MN10300_CACHE_WBACK
EXPORT_SYMBOL(mn10300_dcache_flush);
EXPORT_SYMBOL(mn10300_dcache_flush_inv);
EXPORT_SYMBOL(mn10300_dcache_flush_inv_range);
EXPORT_SYMBOL(mn10300_dcache_flush_inv_range2);
EXPORT_SYMBOL(mn10300_dcache_flush_inv_page);
EXPORT_SYMBOL(mn10300_dcache_flush_range);
EXPORT_SYMBOL(mn10300_dcache_flush_range2);
EXPORT_SYMBOL(mn10300_dcache_flush_page);
#endif
/*
* allow userspace to flush the instruction cache
*/
asmlinkage long sys_cacheflush(unsigned long start, unsigned long end)
{
if (end < start)
return -EINVAL;
flush_icache_range(start, end);
return 0;
}