drm/i915/skl WaDisableSbeCacheDispatchPortSharing

Add WaDisableSbeCacheDispatchPortSharing:skl

Cc: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Arun Siluvery <arun.siluvery@linux.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 1c14233d179f1e85f988e603f2a6478586224ff0..1a10358d4c48bd80be29aab7e544418139fbc2f8 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1059,6 +1059,13 @@ static int skl_init_workarounds(struct intel_engine_cs *ring)
                                  HDC_FENCE_DEST_SLM_DISABLE |
                                  HDC_BARRIER_PERFORMANCE_DISABLE);
 
+       /* WaDisableSbeCacheDispatchPortSharing:skl */
+       if (INTEL_REVID(dev) <= SKL_REVID_F0) {
+               WA_SET_BIT_MASKED(
+                       GEN7_HALF_SLICE_CHICKEN1,
+                       GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
+       }
+
        return skl_tune_iz_hashing(ring);
 }