drm/i915/cnl: Add WaDisableReplayBufferBankArbitrationOptimization

WA to disable replay buffer destination buffer arbitration optimization.

Same Wa on previous platforms has a different name: WaToEnableHwFixForPushConstHWBug

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170815231651.975-2-rodrigo.vivi@intel.com

diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 58a2353..e66817d 100644 (file)
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1070,6 +1070,10 @@ static int cnl_init_workarounds(struct intel_engine_cs *engine)
        struct drm_i915_private *dev_priv = engine->i915;
        int ret;
 
+       /* WaDisableReplayBufferBankArbitrationOptimization:cnl */
+       WA_SET_BIT_MASKED(COMMON_SLICE_CHICKEN2,
+                         GEN8_SBE_DISABLE_REPLAY_BUF_OPTIMIZATION);
+
        /* WaInPlaceDecompressionHang:cnl */
        WA_SET_BIT(GEN9_GAMT_ECO_REG_RW_IA,
                   GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS);