From 5b0acc2ee5021bc71a1d2f964f9272c19da384d2 Mon Sep 17 00:00:00 2001 From: mav Date: Mon, 1 Oct 2012 10:52:10 +0000 Subject: [PATCH] MFC r240917: Reduce delays in several wait loops from 10ms to 10us, same is it is done in Linux. This substantially increases graphics performance on Ivy Bridge. Submitted by: avg@ Reviewed by: kib@ Approved by: re (kib) git-svn-id: svn://svn.freebsd.org/base/releng/9.1@241093 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- sys/dev/drm2/i915/i915_drv.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/sys/dev/drm2/i915/i915_drv.c b/sys/dev/drm2/i915/i915_drv.c index 79ab6d55..c90d1d1e 100644 --- a/sys/dev/drm2/i915/i915_drv.c +++ b/sys/dev/drm2/i915/i915_drv.c @@ -486,14 +486,14 @@ __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv) count = 0; while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1)) - DELAY(10000); + DELAY(10); I915_WRITE_NOTRACE(FORCEWAKE, 1); POSTING_READ(FORCEWAKE); count = 0; while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1) == 0) - DELAY(10000); + DELAY(10); } void @@ -503,14 +503,14 @@ __gen6_gt_force_wake_mt_get(struct drm_i915_private *dev_priv) count = 0; while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_MT_ACK) & 1)) - DELAY(10000); + DELAY(10); I915_WRITE_NOTRACE(FORCEWAKE_MT, (1<<16) | 1); POSTING_READ(FORCEWAKE_MT); count = 0; while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_MT_ACK) & 1) == 0) - DELAY(10000); + DELAY(10); } void @@ -572,7 +572,7 @@ __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) int loop = 500; u32 fifo = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) { - DELAY(10000); + DELAY(10); fifo = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); } if (loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES) { -- 2.42.0