drm/i915/bdw: conservative SBE VUE cache mode
Hold vertex data in cache until last reference
BDW-A workaround
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 5dceb56..ccd1b88 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5297,6 +5297,9 @@
I915_WRITE(_3D_CHICKEN3,
_3D_CHICKEN_SDE_LIMIT_FIFO_POLY_DEPTH(2));
+ I915_WRITE(COMMON_SLICE_CHICKEN2,
+ _MASKED_BIT_ENABLE(GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE));
+
/* WaSwitchSolVfFArbitrationPriority */
I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);