drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0

[linux-2.6-block.git] / drivers / gpu / drm / i915 / intel_ringbuffer.c

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 02edf85f7456d25957609e77ffed1d557623e941..55d08fbbf8e3537e934cc496b148b3cc25638f61 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1199,6 +1199,11 @@ static int kbl_init_workarounds(struct intel_engine_cs *engine)
        I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
                                   GEN9_GAPS_TSV_CREDIT_DISABLE));
 
+       /* WaDisableFenceDestinationToSLM:kbl (pre-prod) */
+       if (IS_KBL_REVID(dev_priv, KBL_REVID_A0, KBL_REVID_A0))
+               WA_SET_BIT_MASKED(HDC_CHICKEN0,
+                                 HDC_FENCE_DEST_SLM_DISABLE);
+
        return 0;
 }