diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_wc_ppc64.c')
-rw-r--r-- | drivers/infiniband/hw/ipath/ipath_wc_ppc64.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_wc_ppc64.c b/drivers/infiniband/hw/ipath/ipath_wc_ppc64.c new file mode 100644 index 0000000..036fde6 --- /dev/null +++ b/drivers/infiniband/hw/ipath/ipath_wc_ppc64.c @@ -0,0 +1,52 @@ +/* + * Copyright (c) 2006 QLogic, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +/* + * This file is conditionally built on PowerPC only. Otherwise weak symbol + * versions of the functions exported from here are used. + */ + +#include "ipath_kernel.h" + +/** + * ipath_unordered_wc - indicate whether write combining is ordered + * + * PowerPC systems (at least those in the 970 processor family) + * write partially filled store buffers in address order, but will write + * completely filled store buffers in "random" order, and therefore must + * have serialization for correctness with current InfiniPath chips. + * + */ +int ipath_unordered_wc(void) +{ + return 1; +} |