drm/i915/bxt: Add WaForceContextSaveRestoreNonCoherent
authorNick Hoath <nicholas.hoath@intel.com>
Fri, 10 Apr 2015 12:12:26 +0000 (13:12 +0100)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 8 May 2015 11:03:45 +0000 (13:03 +0200)
Note that we also need this for skl.

Signed-off-by: Nick Hoath <nicholas.hoath@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
[danvet: Note that we also need this for skl, requested by Imre.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_ringbuffer.c

index b0bd9bb6676e060394b10cce87be918e61e4692d..7ef9a29405cdb44e7ce1027a563935f37db69bfa 100644 (file)
@@ -1057,6 +1057,10 @@ static int bxt_init_workarounds(struct intel_engine_cs *ring)
                        GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
        }
 
+       /* WaForceContextSaveRestoreNonCoherent:bxt */
+       WA_SET_BIT_MASKED(HDC_CHICKEN0,
+                         HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT);
+
        return 0;
 }