From 3ac7831314eba873d60b58718123c503f6961337 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 25 Oct 2012 12:15:47 -0700 Subject: [PATCH] drm/i915: PIPE_CONTROL TLB invalidate requires CS stall MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit "If ENABLED, PIPE_CONTROL command will flush the in flight data written out by render engine to Global Observation point on flush done. Also Requires stall bit ([20] of DW1) set." So set the stall bit to ensure proper invalidation. Signed-off-by: Jesse Barnes Reviewed-by: Antti Koskipää Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ringbuffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 1591955044c8..f7617a4e005f 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -245,7 +245,7 @@ gen6_render_ring_flush(struct intel_ring_buffer *ring, /* * TLB invalidate requires a post-sync write. */ - flags |= PIPE_CONTROL_QW_WRITE; + flags |= PIPE_CONTROL_QW_WRITE | PIPE_CONTROL_CS_STALL; } ret = intel_ring_begin(ring, 4); -- 2.20.1