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1/*2 * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved.3 *4 * This software is available to you under a choice of one of two5 * licenses. You may choose to be licensed under the terms of the GNU6 * General Public License (GPL) Version 2, available from the file7 * COPYING in the main directory of this source tree, or the8 * OpenIB.org BSD license below:9 *10 * Redistribution and use in source and binary forms, with or11 * without modification, are permitted provided that the following12 * conditions are met:13 *14 * - Redistributions of source code must retain the above15 * copyright notice, this list of conditions and the following16 * disclaimer.17 *18 * - Redistributions in binary form must reproduce the above19 * copyright notice, this list of conditions and the following20 * disclaimer in the documentation and/or other materials21 * provided with the distribution.22 *23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE30 * SOFTWARE.31 */32 33/*34 * This file is conditionally built on PowerPC only. Otherwise weak symbol35 * versions of the functions exported from here are used.36 */37 38#include "qib.h"39 40/**41 * qib_enable_wc - enable write combining for MMIO writes to the device42 * @dd: qlogic_ib device43 *44 * Nothing to do on PowerPC, so just return without error.45 */46int qib_enable_wc(struct qib_devdata *dd)47{48 return 0;49}50 51/**52 * qib_unordered_wc - indicate whether write combining is unordered53 *54 * Because our performance depends on our ability to do write55 * combining mmio writes in the most efficient way, we need to56 * know if we are on a processor that may reorder stores when57 * write combining.58 */59int qib_unordered_wc(void)60{61 return 1;62}63