Author: mav
Date: Mon Oct 1 10:52:10 2012
New Revision: 241093
URL: http://svn.freebsd.org/changeset/base/241093
Log:
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)
Modified:
releng/9.1/sys/dev/drm2/i915/i915_drv.c
Directory Properties:
releng/9.1/sys/ (props changed)
releng/9.1/sys/dev/ (props changed)
Modified: releng/9.1/sys/dev/drm2/i915/i915_drv.c
==============================================================================
--- releng/9.1/sys/dev/drm2/i915/i915_drv.c Mon Oct 1 10:46:35 2012
(r241092)
+++ releng/9.1/sys/dev/drm2/i915/i915_drv.c Mon Oct 1 10:52:10 2012
(r241093)
@@ -486,14 +486,14 @@ __gen6_gt_force_wake_get(struct drm_i915
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_i
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_
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) {
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