diff options
Diffstat (limited to 'include/drm/i915_drm.h')
| -rw-r--r-- | include/drm/i915_drm.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h index 0f149fe32211..772b0d638912 100644 --- a/include/drm/i915_drm.h +++ b/include/drm/i915_drm.h @@ -716,10 +716,16 @@ struct drm_i915_gem_busy { #define I915_CACHEING_CACHED 1 struct drm_i915_gem_cacheing { - /** Handle of the buffer to set/get the cacheing level of */ + /** + * Handle of the buffer to set/get the cacheing level of. */ __u32 handle; - /** Cacheing level to apply or return value */ + /** + * Cacheing level to apply or return value + * + * bits0-15 are for generic cacheing control (i.e. the above defined + * values). bits16-31 are reserved for platform-specific variations + * (e.g. l3$ caching on gen7). */ __u32 cacheing; }; |