75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/*
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* Copyright (c) 2006-2007 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/pci.h>
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#include "wc.h"
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#if defined(__i386__) || defined(__x86_64__)
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pgprot_t pgprot_wc(pgprot_t _prot)
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{
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return pgprot_writecombine(_prot);
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}
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int mlx4_wc_enabled(void)
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{
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return 1;
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}
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#elif defined(CONFIG_PPC64)
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pgprot_t pgprot_wc(pgprot_t _prot)
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{
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return __pgprot((pgprot_val(_prot) | _PAGE_NO_CACHE) &
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~(pgprot_t)_PAGE_GUARDED);
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}
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int mlx4_wc_enabled(void)
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{
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return 1;
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}
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#else /* !(defined(__i386__) || defined(__x86_64__)) */
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pgprot_t pgprot_wc(pgprot_t _prot)
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{
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return pgprot_noncached(_prot);
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}
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int mlx4_wc_enabled(void)
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{
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return 0;
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}
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#endif
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