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Commit 5c9664d7 authored by Jesse Barnes's avatar Jesse Barnes Committed by Daniel Vetter
Browse files

drm/i915: implement WaForceL3Serialization on VLV and IVB 

References: https://bugs.freedesktop.org/show_bug.cgi?id=50250


Reviewed-by: default avatarBen Widawsky <ben@bwidawsk.net>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: default avatarAntti Koskipää <antti.koskipaa@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 8ab43976

drivers/gpu/drm/i915/intel_pm.c

+4 −0
Original line number Diff line number Diff line
@@ -3695,6 +3695,10 @@ static void valleyview_init_clock_gating(struct drm_device *dev) 
	I915_WRITE(GEN7_ROW_CHICKEN2,

		   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));



	/* WaForceL3Serialization */

	I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) &

		   ~L3SQ_URB_READ_CAM_MATCH_DISABLE);



	/* This is required by WaCatErrorRejectionIssue */

	I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,

		   I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |