drm_cache.h
/**************************************************************************
*
* Copyright 2009 Red Hat Inc.
* 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
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* 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.
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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**************************************************************************/
/*
* Authors:
* Dave Airlie <airlied@redhat.com>
*/
#ifndef _DRM_CACHE_H_
#define _DRM_CACHE_H_
#include <linux/scatterlist.h>
void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
void drm_clflush_sg(struct sg_table *st);
void drm_clflush_virt_range(void *addr, unsigned long length);
u64 drm_get_max_iomem(void);
static inline bool drm_arch_can_wc_memory(void)
{
#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
return false;
#elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
return false;
#else
return true;
#endif
}
#endif