1/**************************************************************************
 2 *
 3 * Copyright 2009 Red Hat Inc.
 4 * All Rights Reserved.
 5 *
 6 * Permission is hereby granted, free of charge, to any person obtaining a
 7 * copy of this software and associated documentation files (the
 8 * "Software"), to deal in the Software without restriction, including
 9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 *
27 **************************************************************************/
28/*
29 * Authors:
30 * Dave Airlie <airlied@redhat.com>
31 */
32
33#ifndef _DRM_CACHE_H_
34#define _DRM_CACHE_H_
35
 
 
36void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
37
38#endif

 1/**************************************************************************
 2 *
 3 * Copyright 2009 Red Hat Inc.
 4 * All Rights Reserved.
 5 *
 6 * Permission is hereby granted, free of charge, to any person obtaining a
 7 * copy of this software and associated documentation files (the
 8 * "Software"), to deal in the Software without restriction, including
 9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 *
27 **************************************************************************/
28/*
29 * Authors:
30 * Dave Airlie <airlied@redhat.com>
31 */
32
33#ifndef _DRM_CACHE_H_
34#define _DRM_CACHE_H_
35
36#include <linux/scatterlist.h>
37
38void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
39void drm_clflush_sg(struct sg_table *st);
40void drm_clflush_virt_range(void *addr, unsigned long length);
41u64 drm_get_max_iomem(void);
42
43
44static inline bool drm_arch_can_wc_memory(void)
45{
46#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
47	return false;
48#elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
49	return false;
50#else
51	return true;
52#endif
53}
54
55#endif