drm/i915/bdw: GEN-specific logical ring emit batchbuffer start

Dispatch_execbuffer's evil twin.

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Ditch the check for aliasing ppgtt. It'll break soon and
execlists requires full ppgtt anyway.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index cb529ee10c8f..24437da91f77 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -229,6 +229,8 @@ struct  intel_engine_cs {
         int             (*emit_flush)(struct intel_ringbuffer *ringbuf,
                                       u32 invalidate_domains,
                                       u32 flush_domains);
+        int             (*emit_bb_start)(struct intel_ringbuffer *ringbuf,
+                                         u64 offset, unsigned flags);
 
         /**
          * List of objects currently involved in rendering from the