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/*
*
* Copyright(c) 2006-2007 Tungsten Graphics, Inc., Cedar Park, TX., USA
* Copyright (c) 2009, Intel Corporation.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files(the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice(including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
*
*/
/*
* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
*/
/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <sys/x86_archext.h>
#include <vm/seg_kmem.h>
#include "drmP.h"
extern void clflush_insn(caddr_t addr);
extern void mfence_insn(void);
static void
drm_clflush_page(caddr_t page)
{
unsigned int i;
if (page == NULL)
return;
for (i = 0; i < PAGE_SIZE; i += x86_clflush_size)
clflush_insn(page + i);
mfence_insn();
}
void
drm_clflush_pages(caddr_t *pages, unsigned long num_pages)
{
if (is_x86_feature(x86_featureset, X86FSET_CLFSH)) {
unsigned long i;
for (i = 0; i < num_pages; i++)
drm_clflush_page(pages[i]);
}
}
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