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Commit 13bea49c authored by Hoath, Nicholas's avatar Hoath, Nicholas Committed by Daniel Vetter
Browse files

drm/i915/gen9: Implement WaForceEnableNonCoherent 



v2: Don't add WaHdcDisableFetchWhenMasked. Add stepping check for
WaForceEnableNonCoherent

Signed-off-by: default avatarNick Hoath <nicholas.hoath@intel.com>
Reviewed-by: default avatarDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 1840481f

drivers/gpu/drm/i915/intel_ringbuffer.c

+11 −0
Original line number Original line Diff line number Diff line
@@ -902,6 +902,17 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring) 
				  GEN9_ENABLE_YV12_BUGFIX);

				  GEN9_ENABLE_YV12_BUGFIX);

	}

	}





	if (INTEL_REVID(dev) <= SKL_REVID_D0) {

		/*

		 *Use Force Non-Coherent whenever executing a 3D context. This

		 * is a workaround for a possible hang in the unlikely event

		 * a TLB invalidation occurs during a PSD flush.

		 */

		/* WaForceEnableNonCoherent:skl */

		WA_SET_BIT_MASKED(HDC_CHICKEN0,

				  HDC_FORCE_NON_COHERENT);

	}



	/* Wa4x4STCOptimizationDisable:skl */

	/* Wa4x4STCOptimizationDisable:skl */

	WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE);

	WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE);