| /* |
| * 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); |
