drm/i915: introduce intel_ring_buffer structure (V2)

Introduces a more complete intel_ring_buffer structure with callbacks
for setup and management of a particular ringbuffer, and converts the
render ring buffer consumers to use it.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Xiang Hai hao <haihao.xiang@intel.com>
[anholt: Fixed up whitespace fail and rebased against prep patches]
Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index b64a8d7cdf6d..e9168704cabe 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -616,7 +616,9 @@ struct drm_i915_gem_execbuffer2 {
         __u32 num_cliprects;
         /** This is a struct drm_clip_rect *cliprects */
         __u64 cliprects_ptr;
-        __u64 flags; /* currently unused */
+#define I915_EXEC_RENDER                 (1<<0)
+#define I915_EXEC_BSD                    (1<<1)
+        __u64 flags;
         __u64 rsvd1;
         __u64 rsvd2;
 };