[PATCH v3] drm/i915/icl: Add WaDisableBankHangMode

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

ctx hack

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h          | 3 +++
 drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c18caa76f27c..bac26dc2cbaa 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7654,6 +7654,9 @@ enum {
   #define GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION		(1 << 8)
   #define GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE			(1 << 0)
 
+#define GEN8_L3CNTLREG	   _MMIO(0x7034)
+  #define GEN8_ERRDETBCTRL (1 << 9)
+
 #define GEN11_COMMON_SLICE_CHICKEN3		_MMIO(0x7304)
   #define GEN11_BLEND_EMB_FIX_DISABLE_IN_RCC	(1 << 11)
 
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index a04dbc58ec1c..0ce27a0fd469 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -517,6 +517,7 @@ static void icl_ctx_workarounds_init(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *i915 = engine->i915;
 	struct i915_wa_list *wal = &engine->ctx_wa_list;
+	struct drm_i915_private *dev_priv = i915;
 
 	/* Wa_1604370585:icl (pre-prod)
 	 * Formerly known as WaPushConstantDereferenceHoldDisable
@@ -560,6 +561,11 @@ static void icl_ctx_workarounds_init(struct intel_engine_cs *engine)
 	WA_SET_FIELD_MASKED(GEN8_CS_CHICKEN1,
 			    GEN9_PREEMPT_GPGPU_LEVEL_MASK,
 			    GEN9_PREEMPT_GPGPU_THREAD_GROUP_LEVEL);
+
+	/* WaDisableBankHangMode:icl */
+	wa_write(wal,
+		 GEN8_L3CNTLREG,
+		 I915_READ(GEN8_L3CNTLREG) | GEN8_ERRDETBCTRL);
 }
 
 void intel_engine_init_ctx_wa(struct intel_engine_cs *engine)
-- 
2.19.1