drm/i915/gen9: Add WaDisableSamplerPowerBypassForSOPingPong

Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 20a75bb516aca842d1dcbe7be1999d8cc2483f40..684e0693dae9e34e8be5fe13db09562474e0112f 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -983,6 +983,13 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
                tmp |= HDC_FORCE_CSR_NON_COHERENT_OVR_DISABLE;
        WA_SET_BIT_MASKED(HDC_CHICKEN0, tmp);
 
+       /* WaDisableSamplerPowerBypassForSOPingPong:skl,bxt */
+       if (IS_SKYLAKE(dev) ||
+           (IS_BROXTON(dev) && INTEL_REVID(dev) <= BXT_REVID_B0)) {
+               WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3,
+                                 GEN8_SAMPLER_POWER_BYPASS_DIS);
+       }
+
        return 0;
 }