cache.c

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/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 * 
 * Copyright (C) 2001-2003, 2006 Silicon Graphics, Inc. All rights reserved.
 *
 */
#include <linux/module.h>
#include <asm/pgalloc.h>
#include <asm/sn/arch.h>

void
sn_flush_all_caches(long flush_addr, long bytes)
{
    unsigned long addr = flush_addr;

    /* SHub1 requires a cached address */
    if (is_shub1() && (addr & RGN_BITS) == RGN_BASE(RGN_UNCACHED))
        addr = (addr - RGN_BASE(RGN_UNCACHED)) + RGN_BASE(RGN_KERNEL);

    flush_icache_range(addr, addr + bytes);
    /*
     * The last call may have returned before the caches
     * were actually flushed, so we call it again to make
     * sure.
     */
    flush_icache_range(addr, addr + bytes);
    mb();
}
EXPORT_SYMBOL(sn_flush_all_caches);