From 4f8a567c4666c73284832240db89fdadb2c50bd5 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 11 Feb 2010 14:14:43 +0100 Subject: [PATCH] drm/i915: overlay: drop superflous gpu flushes Cache-coherency is maintained by gem. Drop these leftover MI_FLUSH commands from the userspace code. Signed-off-by: Daniel Vetter Acked-by: Chris Wilson Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_overlay.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c index 1257dc3..f3086fd 100644 --- a/drivers/gpu/drm/i915/intel_overlay.c +++ b/drivers/gpu/drm/i915/intel_overlay.c @@ -220,9 +220,7 @@ static int intel_overlay_on(struct intel_overlay *overlay) overlay->active = 1; overlay->hw_wedged = NEEDS_WAIT_FOR_FLIP; - BEGIN_LP_RING(6); - OUT_RING(MI_FLUSH); - OUT_RING(MI_NOOP); + BEGIN_LP_RING(4); OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_ON); OUT_RING(overlay->flip_addr | OFC_UPDATE); OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP); @@ -262,9 +260,7 @@ static void intel_overlay_continue(struct intel_overlay *overlay, if (tmp & (1 << 17)) DRM_DEBUG("overlay underrun, DOVSTA: %x\n", tmp); - BEGIN_LP_RING(4); - OUT_RING(MI_FLUSH); - OUT_RING(MI_NOOP); + BEGIN_LP_RING(2); OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE); OUT_RING(flip_addr); ADVANCE_LP_RING(); @@ -333,9 +329,7 @@ static int intel_overlay_off(struct intel_overlay *overlay) /* wait for overlay to go idle */ overlay->hw_wedged = SWITCH_OFF_STAGE_1; - BEGIN_LP_RING(6); - OUT_RING(MI_FLUSH); - OUT_RING(MI_NOOP); + BEGIN_LP_RING(4); OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE); OUT_RING(flip_addr); OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP); @@ -353,9 +347,7 @@ static int intel_overlay_off(struct intel_overlay *overlay) /* turn overlay off */ overlay->hw_wedged = SWITCH_OFF_STAGE_2; - BEGIN_LP_RING(6); - OUT_RING(MI_FLUSH); - OUT_RING(MI_NOOP); + BEGIN_LP_RING(4); OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_OFF); OUT_RING(flip_addr); OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP); @@ -430,9 +422,7 @@ int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay, overlay->hw_wedged = SWITCH_OFF_STAGE_2; - BEGIN_LP_RING(6); - OUT_RING(MI_FLUSH); - OUT_RING(MI_NOOP); + BEGIN_LP_RING(4); OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_OFF); OUT_RING(flip_addr); OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP); -- 2.7.4