[Intel-gfx] [PATCH] drm/i915/chv: Implement Wa4x4STCOptimizationDisable:chv

[Rodrigo Vivi]

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 4e8b2ea..50d9169 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -784,6 +784,10 @@ static int chv_init_workarounds(struct intel_engine_cs *ring)
 	intel_ring_emit_wa(ring, GEN8_ROW_CHICKEN,
 			   _MASKED_BIT_ENABLE(STALL_DOP_GATING_DISABLE));
 
+	/* Wa4x4STCOptimizationDisable:chv */
+	intel_ring_emit_wa(ring, CACHE_MODE_1,
+			   _MASKED_BIT_ENABLE(GEN8_4x4_STC_OPTIMIZATION_DISABLE));
+
 	/* WaDisableDopClockGating:chv (pre-production hw) */
 	intel_ring_emit_wa(ring, GEN7_ROW_CHICKEN2,
 			   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
-- 
1.9.3