drm_cache.h 1.7 KB

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  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. #ifndef _DRM_CACHE_H_
  33. #define _DRM_CACHE_H_
  34. void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
  35. static inline bool drm_arch_can_wc_memory(void)
  36. {
  37. #if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
  38. return false;
  39. #elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
  40. return false;
  41. #else
  42. return true;
  43. #endif
  44. }
  45. #endif