1 /* $NetBSD: drm_cache.h,v 1.4 2020/01/19 16:12:00 jmcneill 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@redhat.com> 33 */ 34 35 #ifndef _DRM_CACHE_H_ 36 #define _DRM_CACHE_H_ 37 38 #ifdef __NetBSD__ 39 #include <drm/drm_os_netbsd.h> 40 #endif 41 42 void drm_clflush_pages(struct page *pages[], unsigned long num_pages); 43 44 static 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 #elif defined(CONFIG_ARM) || defined(CONFIG_ARM64) 51 return false; 52 #else 53 return true; 54 #endif 55 } 56 57 #endif 58