Attachment 43681 Details for Bug 34433 – flush blt ring and set notify bit

[patch] flush blt ring and set notify bit

i915-snb-blit-fbc-notify-ring-fix.patch (text/plain), 1.31 KB, created by Jesse Barnes on 2011-02-22 14:29:49 UTC

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Creator: Jesse Barnes

Created: 2011-02-22 14:29:49 UTC

Size: 1.31 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
>index 6bda30d..114a9cc 100644
>--- a/drivers/gpu/drm/i915/intel_display.c
>+++ b/drivers/gpu/drm/i915/intel_display.c
>@@ -1823,9 +1823,9 @@ static void sandybridge_blit_fbc_update(struct drm_device *dev)
> {
> 	struct drm_i915_private *dev_priv = dev->dev_private;
> 	u32 blt_ecoskpd;
>+	int ret;
> 
> 	/* Make sure blitter notifies FBC of writes */
>-	__gen6_force_wake_get(dev_priv);
> 	blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
> 	blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
> 		GEN6_BLITTER_LOCK_SHIFT;
>@@ -1836,7 +1836,17 @@ static void sandybridge_blit_fbc_update(struct drm_device *dev)
> 			 GEN6_BLITTER_LOCK_SHIFT);
> 	I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
> 	POSTING_READ(GEN6_BLITTER_ECOSKPD);
>-	__gen6_force_wake_put(dev_priv);
>+
>+	ret = intel_ring_begin(&dev_priv->ring[BCS], 5);
>+	if (ret)
>+		return; /* hope for the best */
>+
>+	intel_ring_emit(&dev_priv->ring[BCS], MI_FLUSH_DW);
>+	intel_ring_emit(&dev_priv->ring[BCS], MI_NOOP);
>+	intel_ring_emit(&dev_priv->ring[BCS], MI_LOAD_REGISTER_IMM(1));
>+	intel_ring_emit(&dev_priv->ring[BCS], GEN6_BLITTER_ECOSKPD);
>+	intel_ring_emit(&dev_priv->ring[BCS], blt_ecoskpd);
>+	intel_ring_advance(&dev_priv->ring[BCS]);
> }
> 
> static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)

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Attachments on bug 34433: 43514 | 43681 | 43682 | 43723

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