drm/i915/gen9: Implement WaDisableKillLogic for gen 9
v2: Patch leakage fixed
Signed-off-by: Nick Hoath <nicholas.hoath@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 97794bc..ef5f69a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -160,6 +160,7 @@
#define GAM_ECOCHK 0x4090
#define BDW_DISABLE_HDC_INVALIDATION (1<<25)
#define ECOCHK_SNB_BIT (1<<10)
+#define ECOCHK_DIS_TLB (1<<8)
#define HSW_ECOCHK_ARB_PRIO_SOL (1<<6)
#define ECOCHK_PPGTT_CACHE64B (0x3<<3)
#define ECOCHK_PPGTT_CACHE4B (0x0<<3)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 0259785..3a48c4f 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -59,6 +59,10 @@
/* WaEnableLbsSlaRetryTimerDecrement:skl */
I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) |
GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE);
+
+ /* WaDisableKillLogic:bxt,skl */
+ I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
+ ECOCHK_DIS_TLB);
}
static void skl_init_clock_gating(struct drm_device *dev)