8be0628923
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>
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* MN10300 Cache flushing routines
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/mman.h>
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#include <linux/threads.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/processor.h>
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#include <asm/cacheflush.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <asm/smp.h>
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#include "cache-smp.h"
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EXPORT_SYMBOL(mn10300_icache_inv);
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EXPORT_SYMBOL(mn10300_icache_inv_range);
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EXPORT_SYMBOL(mn10300_icache_inv_range2);
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EXPORT_SYMBOL(mn10300_icache_inv_page);
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EXPORT_SYMBOL(mn10300_dcache_inv);
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EXPORT_SYMBOL(mn10300_dcache_inv_range);
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EXPORT_SYMBOL(mn10300_dcache_inv_range2);
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EXPORT_SYMBOL(mn10300_dcache_inv_page);
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#ifdef CONFIG_MN10300_CACHE_WBACK
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EXPORT_SYMBOL(mn10300_dcache_flush);
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EXPORT_SYMBOL(mn10300_dcache_flush_inv);
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EXPORT_SYMBOL(mn10300_dcache_flush_inv_range);
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EXPORT_SYMBOL(mn10300_dcache_flush_inv_range2);
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EXPORT_SYMBOL(mn10300_dcache_flush_inv_page);
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EXPORT_SYMBOL(mn10300_dcache_flush_range);
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EXPORT_SYMBOL(mn10300_dcache_flush_range2);
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EXPORT_SYMBOL(mn10300_dcache_flush_page);
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#endif
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/*
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* allow userspace to flush the instruction cache
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*/
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asmlinkage long sys_cacheflush(unsigned long start, unsigned long end)
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{
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if (end < start)
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return -EINVAL;
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flush_icache_range(start, end);
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return 0;
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}
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