drm/i915/gen9: implement WaEnableSamplerGPGPUPreemptionSupport
WaEnableSamplerGPGPUPreemptionSupport fixes a problem
related to mid thread pre-emption.
Signed-off-by: Tim Gore <tim.gore@intel.com>
Reviewed-by: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461077152-31899-1-git-send-email-tim.gore@intel.com
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 0d24494..444d30a 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -959,9 +959,10 @@
}
/* WaEnableYV12BugFixInHalfSliceChicken7:skl,bxt */
- if (IS_SKL_REVID(dev, SKL_REVID_C0, REVID_FOREVER) || IS_BROXTON(dev))
- WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
- GEN9_ENABLE_YV12_BUGFIX);
+ /* WaEnableSamplerGPGPUPreemptionSupport:skl,bxt */
+ WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
+ GEN9_ENABLE_YV12_BUGFIX |
+ GEN9_ENABLE_GPGPU_PREEMPTION);
/* Wa4x4STCOptimizationDisable:skl,bxt */
/* WaDisablePartialResolveInVc:skl,bxt */