From: Chia-I Wu <o...@lunarg.com>
The optimization helps IVB too. No piglit regression.
Signed-off-by: Chia-I Wu <o...@lunarg.com>
---
drivers/gpu/drm/i915/intel_pm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c535e5c..58aba3e 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4881,6 +4881,10 @@ static void ivybridge_init_clock_gating(struct
drm_device *dev)
/* WaVSRefCountFullforceMissDisable:ivb */
gen7_setup_fixed_func_scheduler(dev_priv);
+ /* enable HiZ Raw Stall Optimization */
+ I915_WRITE(CACHE_MODE_0_GEN7,
+ _MASKED_BIT_DISABLE(HIZ_RAW_STALL_OPT_DISABLE));
+
/* WaDisable4x2SubspanOptimization:ivb */
I915_WRITE(CACHE_MODE_1,
_MASKED_BIT_ENABLE(PIXEL_SUBSPAN_COLLECT_OPT_DISABLE));
--
1.8.3.1
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