diff options
author | Ralph Campbell <ralph.campbell@qlogic.com> | 2010-05-23 21:44:54 -0700 |
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committer | Roland Dreier <rolandd@cisco.com> | 2010-05-23 21:44:54 -0700 |
commit | f931551bafe1f10ded7f5282e2aa162c267a2e5d (patch) | |
tree | e81b4656a8116abf5fd0bc0bbc46560aff536159 /drivers/infiniband/hw/qib/qib_wc_ppc64.c | |
parent | 9a6edb60ec10d86b1025a0cdad68fd89f1ddaf02 (diff) | |
download | op-kernel-dev-f931551bafe1f10ded7f5282e2aa162c267a2e5d.zip op-kernel-dev-f931551bafe1f10ded7f5282e2aa162c267a2e5d.tar.gz |
IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters
Add a low-level IB driver for QLogic PCIe adapters.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_wc_ppc64.c')
-rw-r--r-- | drivers/infiniband/hw/qib/qib_wc_ppc64.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib_wc_ppc64.c b/drivers/infiniband/hw/qib/qib_wc_ppc64.c new file mode 100644 index 0000000..673cf4c --- /dev/null +++ b/drivers/infiniband/hw/qib/qib_wc_ppc64.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2006, 2007, 2008 QLogic Corporation. 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 "qib.h" + +/** + * qib_enable_wc - enable write combining for MMIO writes to the device + * @dd: qlogic_ib device + * + * Nothing to do on PowerPC, so just return without error. + */ +int qib_enable_wc(struct qib_devdata *dd) +{ + return 0; +} + +/** + * qib_unordered_wc - indicate whether write combining is unordered + * + * Because our performance depends on our ability to do write + * combining mmio writes in the most efficient way, we need to + * know if we are on a processor that may reorder stores when + * write combining. + */ +int qib_unordered_wc(void) +{ + return 1; +} |