82626363a2
it will be used to check if the driver needs swiotlb v2: Don't use inline, instead, move function to drm_memory.c (Michel Daenzer <michel@daenzer.net>) Signed-off-by: Chunming Zhou <david1.zhou@amd.com> Reviewed-by: Monk Liu <monk.liu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180209024410.1469-1-david1.zhou@amd.com
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/**************************************************************************
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*
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* Copyright 2009 Red Hat Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*
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**************************************************************************/
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/*
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* Authors:
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* Dave Airlie <airlied@redhat.com>
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*/
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#ifndef _DRM_CACHE_H_
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#define _DRM_CACHE_H_
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#include <linux/scatterlist.h>
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void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
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void drm_clflush_sg(struct sg_table *st);
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void drm_clflush_virt_range(void *addr, unsigned long length);
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u64 drm_get_max_iomem(void);
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static inline bool drm_arch_can_wc_memory(void)
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{
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#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
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return false;
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#elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
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return false;
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#else
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return true;
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#endif
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}
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#endif
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