From patchwork Thu Dec 3 19:07:21 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ralph Campbell X-Patchwork-Id: 64647 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id nB3J61Tn027769 for ; Thu, 3 Dec 2009 19:07:23 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756695AbZLCTHQ (ORCPT ); Thu, 3 Dec 2009 14:07:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756692AbZLCTHQ (ORCPT ); Thu, 3 Dec 2009 14:07:16 -0500 Received: from vpn.pathscale.com ([198.186.3.75]:33089 "HELO mx.mv.qlogic.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with SMTP id S1756691AbZLCTHP (ORCPT ); Thu, 3 Dec 2009 14:07:15 -0500 Received: from chromite.mv.qlogic.com (chromite.mv.qlogic.com [10.29.2.82]) by mx.mv.qlogic.com (Postfix) with ESMTP id E5029957C009; Thu, 3 Dec 2009 11:07:21 -0800 (PST) Received: from chromite.mv.qlogic.com (localhost.localdomain [127.0.0.1]) by chromite.mv.qlogic.com (Postfix) with ESMTP id DE310CC2A1; Thu, 3 Dec 2009 11:07:21 -0800 (PST) From: Ralph Campbell Subject: [PATCH v2 49/51] IB/qib: Add qib_wc_ppc64.c To: Roland Dreier Cc: linux-rdma@vger.kernel.org Date: Thu, 03 Dec 2009 11:07:21 -0800 Message-ID: <20091203190721.29507.42351.stgit@chromite.mv.qlogic.com> In-Reply-To: <20091203190305.29507.58158.stgit@chromite.mv.qlogic.com> References: <20091203190305.29507.58158.stgit@chromite.mv.qlogic.com> User-Agent: StGIT/0.14.2 MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org 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; +}