From: arun.siluvery@linux.intel.com <arun.siluvery@linux.intel.com>
Date: Fri, 3 Jun 2016 10:16:10 +0000 (+0100)
Subject: drm/i915/bxt: Add WaDisablePooledEuLoadBalancingFix
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=780f0aebda2e2f9df4cc5ddda411a724db7a1dcc;p=linux-beck.git

drm/i915/bxt: Add WaDisablePooledEuLoadBalancingFix

This is a WA affecting pooled eu which is a bxt specific feature.

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Winiarski, Michal <michal.winiarski@intel.com>
Cc: Zou, Nanhai <nanhai.zou@intel.com>
Cc: Yang, Rong R <rong.r.yang@intel.com>
Cc: Jeff McGee <jeff.mcgee@intel.com>
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4058d6f66f5a..8a729c95e80e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6106,6 +6106,7 @@ enum skl_disp_power_wells {
 
 #define FF_SLICE_CS_CHICKEN2			_MMIO(0x20e4)
 #define  GEN9_TSG_BARRIER_ACK_DISABLE		(1<<8)
+#define  GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE  (1<<10)
 
 #define GEN9_CS_DEBUG_MODE1		_MMIO(0x20ec)
 #define GEN9_CTX_PREEMPT_REG		_MMIO(0x2248)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 110c7fc957b7..fedd27049814 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1160,6 +1160,12 @@ static int bxt_init_workarounds(struct intel_engine_cs *engine)
 	WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
 			  STALL_DOP_GATING_DISABLE);
 
+	/* WaDisablePooledEuLoadBalancingFix:bxt */
+	if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) {
+		WA_SET_BIT_MASKED(FF_SLICE_CS_CHICKEN2,
+				  GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE);
+	}
+
 	/* WaDisableSbeCacheDispatchPortSharing:bxt */
 	if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_B0)) {
 		WA_SET_BIT_MASKED(