[PATCH 2/2] drm/i915/hsw: Enable resource streamer bit on MI_BATCH_BUFFER_START

[Abdiel Janulgue <abdiel.janulgue@linux.intel.com>]

Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h         |    1 +
 drivers/gpu/drm/i915/intel_ringbuffer.c |    7 ++++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c246727..f3c9103 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -246,6 +246,7 @@
 #define   MI_BATCH_NON_SECURE_HSW 	(1<<13)
 #define MI_BATCH_BUFFER_START	MI_INSTR(0x31, 0)
 #define   MI_BATCH_GTT		    (2<<6) /* aliased with (1<<7) on gen4 */
+#define   MI_BATCH_RESOURCE_STREAMER (1<<10)
 #define MI_SEMAPHORE_MBOX	MI_INSTR(0x16, 1) /* gen6+ */
 #define  MI_SEMAPHORE_GLOBAL_GTT    (1<<22)
 #define  MI_SEMAPHORE_UPDATE	    (1<<21)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index b67104a..c5dd71b 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1647,14 +1647,15 @@ hsw_ring_dispatch_execbuffer(struct intel_ring_buffer *ring,
 			      unsigned flags)
 {
 	int ret;
+	int ring_emit_flags = MI_BATCH_BUFFER_START | MI_BATCH_PPGTT_HSW |
+		(flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE_HSW);
 
 	ret = intel_ring_begin(ring, 2);
 	if (ret)
 		return ret;
 
-	intel_ring_emit(ring,
-			MI_BATCH_BUFFER_START | MI_BATCH_PPGTT_HSW |
-			(flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE_HSW));
+	intel_ring_emit(ring, ring_emit_flags | (flags & I915_EXEC_RESOURCE_STREAMER ?
+			 MI_BATCH_RESOURCE_STREAMER : 0));
 	/* bit0-7 is the length on GEN6+ */
 	intel_ring_emit(ring, offset);
 	intel_ring_advance(ring);
-- 
1.7.9.5