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Commit e587f6cb authored by Mika Kuoppala's avatar Mika Kuoppala Committed by Mika Kuoppala
Browse files

drm/i915/kbl: Add WaEnableGapsTsvCreditFix 



We need this crucial workaround from skl also to all kbl revisions.
Lack of it was causing system hangs on skl enabling so this is
a must have.

v2: Don't add revid checks to gen9 init workarounds (Arun)

References: HSD#2126660
Cc: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-8-git-send-email-mika.kuoppala@intel.com
parent bbaefe72

drivers/gpu/drm/i915/intel_ringbuffer.c

+5 −0
Original line number Diff line number Diff line
@@ -1188,12 +1188,17 @@ static int bxt_init_workarounds(struct intel_engine_cs *engine) 


static int kbl_init_workarounds(struct intel_engine_cs *engine)

{

	struct drm_i915_private *dev_priv = engine->i915;

	int ret;



	ret = gen9_init_workarounds(engine);

	if (ret)

		return ret;



	/* WaEnableGapsTsvCreditFix:kbl */

	I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |

				   GEN9_GAPS_TSV_CREDIT_DISABLE));



	return 0;

}