[PATCH 62/62] drm/i915/bdw: WaSingleSubspanDispatchOnAALinesAndPoints

Ben Widawsky
2013-11-03T04:08:33Z

From: Ben Widawsky <ben@bwidawsk.net>

Implement WaSingleSubspanDispatchOnAALinesAndPoints

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_pm.c | 3 +++
2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1c40fc4..1659ff6 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4980,6 +4980,7 @@
#define GEN7_HALF_SLICE_CHICKEN1 0xe100 /* IVB GT1 + VLV */
#define GEN7_HALF_SLICE_CHICKEN1_GT2 0xf100
#define GEN7_MAX_PS_THREAD_DEP (8<<12)
+#define GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE (1<<10)
#define GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE (1<<3)

#define GEN7_ROW_CHICKEN2 0xe4f4
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 0602ace..dd39c9f 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5298,6 +5298,9 @@ static void gen8_init_clock_gating(struct drm_device *dev)
I915_WRITE(COMMON_SLICE_CHICKEN2,
_MASKED_BIT_ENABLE(GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE));

+ I915_WRITE(GEN7_HALF_SLICE_CHICKEN1,
+ _MASKED_BIT_ENABLE(GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE));
+
/* WaSwitchSolVfFArbitrationPriority */
I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);

--
1.8.4.2