[Intel-gfx] [PATCH 3/3] drm/i915/gt: Stop invalidating the PD cachelines for gen7

[Chris Wilson]

Trust that the HW does the right thing after simply updating the
PD_DIR_BASE?

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_ring_submission.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index f915a63e1110..23f4fc2669d1 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -1341,14 +1341,10 @@ static int load_pd_dir(struct i915_request *rq,
 	const struct intel_engine_cs * const engine = rq->engine;
 	u32 *cs;
 
-	cs = intel_ring_begin(rq, 12);
+	cs = intel_ring_begin(rq, 6);
 	if (IS_ERR(cs))
 		return PTR_ERR(cs);
 
-	*cs++ = MI_LOAD_REGISTER_IMM(1);
-	*cs++ = i915_mmio_reg_offset(RING_PP_DIR_DCLV(engine->mmio_base));
-	*cs++ = valid;
-
 	*cs++ = MI_LOAD_REGISTER_IMM(1);
 	*cs++ = i915_mmio_reg_offset(RING_PP_DIR_BASE(engine->mmio_base));
 	*cs++ = px_base(ppgtt->pd)->ggtt_offset << 10;
@@ -1359,10 +1355,6 @@ static int load_pd_dir(struct i915_request *rq,
 	*cs++ = intel_gt_scratch_offset(engine->gt,
 					INTEL_GT_SCRATCH_FIELD_DEFAULT);
 
-	*cs++ = MI_LOAD_REGISTER_IMM(1);
-	*cs++ = i915_mmio_reg_offset(RING_INSTPM(engine->mmio_base));
-	*cs++ = _MASKED_BIT_ENABLE(INSTPM_TLB_INVALIDATE);
-
 	intel_ring_advance(rq, cs);
 
 	return rq->engine->emit_flush(rq, EMIT_FLUSH);
-- 
2.25.0