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drm_cache.h revision 1.1.1.1.36.1 
      1 /*	$NetBSD: drm_cache.h,v 1.1.1.1.36.1 2018/09/06 06:56:35 pgoyette Exp $	*/
      2 
      3 /**************************************************************************
      4  *
      5  * Copyright 2009 Red Hat Inc.
      6  * All Rights Reserved.
      7  *
      8  * Permission is hereby granted, free of charge, to any person obtaining a
      9  * copy of this software and associated documentation files (the
     10  * "Software"), to deal in the Software without restriction, including
     11  * without limitation the rights to use, copy, modify, merge, publish,
     12  * distribute, sub license, and/or sell copies of the Software, and to
     13  * permit persons to whom the Software is furnished to do so, subject to
     14  * the following conditions:
     15  *
     16  * The above copyright notice and this permission notice (including the
     17  * next paragraph) shall be included in all copies or substantial portions
     18  * of the Software.
     19  *
     20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     22  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     23  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
     24  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     25  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     26  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     27  *
     28  *
     29  **************************************************************************/
     30 /*
     31  * Authors:
     32  * Dave Airlie <airlied (at) redhat.com>
     33  */
     34 
     35 #ifndef _DRM_CACHE_H_
     36 #define _DRM_CACHE_H_
     37 
     38 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
     39 
     40 static inline bool drm_arch_can_wc_memory(void)
     41 {
     42 #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
     43 	return false;
     44 #elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
     45 	return false;
     46 #else
     47 	return true;
     48 #endif
     49 }
     50 
     51 #endif
     52