[Intel-gfx] [PATCH 1/3] drm/i915: rip out old HWSTAM missed irq WA for vlv
Daniel Vetter
daniel.vetter at ffwll.ch
Fri Mar 30 20:24:33 CEST 2012
This got copy-pasted from an older version. The newer kinds of
workarounds don't need this anymore.
Shame on me for not noticing when picking up the vlv irq patch.
Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/i915_irq.c | 12 ------------
1 files changed, 0 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 06286a2..8496fa5 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1998,18 +1998,6 @@ static void valleyview_irq_preinstall(struct drm_device *dev)
I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0);
I915_WRITE(RING_IMR(BLT_RING_BASE), 0);
- if (IS_GEN6(dev) || IS_GEN7(dev)) {
- /* Workaround stalls observed on Sandy Bridge GPUs by
- * making the blitter command streamer generate a
- * write to the Hardware Status Page for
- * MI_USER_INTERRUPT. This appears to serialize the
- * previous seqno write out before the interrupt
- * happens.
- */
- I915_WRITE(GEN6_BLITTER_HWSTAM, ~GEN6_BLITTER_USER_INTERRUPT);
- I915_WRITE(GEN6_BSD_HWSTAM, ~GEN6_BSD_USER_INTERRUPT);
- }
-
/* and GT */
I915_WRITE(GTIIR, I915_READ(GTIIR));
I915_WRITE(GTIIR, I915_READ(GTIIR));
--
1.7.9.1
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