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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>
/**
* sn_flush_all_caches - flush a range of address from all caches (incl. L4)
* @flush_addr: identity mapped region 7 address to start flushing
* @bytes: number of bytes to flush
*
* Flush a range of addresses from all caches including L4.
* All addresses fully or partially contained within
* @flush_addr to @flush_addr + @bytes are flushed
* from all caches.
*/
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);
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