63 строки
2.1 KiB
C
63 строки
2.1 KiB
C
/*
|
|
* 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;
|
|
}
|