drm/i915/skl: Implement WaDisableChickenBitTSGBarrierAckForFFSliceCS

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 75227009d0bb..ecc14f558744 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5236,6 +5236,9 @@ enum skl_disp_power_wells {
 #define HSW_NDE_RSTWRN_OPT      0x46408
 #define  RESET_PCH_HANDSHAKE_ENABLE     (1<<4)
 
+#define FF_SLICE_CS_CHICKEN2                    0x02e4
+#define  GEN9_TSG_BARRIER_ACK_DISABLE           (1<<8)
+
 /* GEN7 chicken */
 #define GEN7_COMMON_SLICE_CHICKEN1              0x7010
 # define GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC      ((1<<10) | (1<<26))