Attachment 73577 Details for Bug 54226 – write mbox regs twice on snb, v2

[patch] write mbox regs twice on snb, v2

0001-write-mbox-regs-twice-on-gen6.patch (text/plain), 970 bytes, created by Daniel Vetter on 2013-01-24 13:21:57 UTC

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Creator: Daniel Vetter

Created: 2013-01-24 13:21:57 UTC

Size: 970 bytes

patch

obsolete

>From 6a36709826cf117bd0c9d3df8fa36adc30ab7c1b Mon Sep 17 00:00:00 2001
>From: Daniel Vetter <daniel.vetter@ffwll.ch>
>Date: Thu, 24 Jan 2013 12:07:24 +0100
>Subject: [PATCH] write mbox regs twice on gen6
>
>---
> drivers/gpu/drm/i915/intel_ringbuffer.c |   13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
>diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
>index dc6ae2f..93c46ac 100644
>--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
>+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
>@@ -598,6 +598,19 @@ gen6_add_request(struct intel_ring_buffer *ring)
> 	intel_ring_emit(ring, MI_USER_INTERRUPT);
> 	intel_ring_advance(ring);
> 
>+	if (IS_GEN6(ring->dev)) {
>+		ret = intel_ring_begin(ring, 6);
>+		if (ret)
>+			return ret;
>+
>+		mbox1_reg = ring->signal_mbox[0];
>+		mbox2_reg = ring->signal_mbox[1];
>+
>+		update_mboxes(ring, mbox1_reg);
>+		update_mboxes(ring, mbox2_reg);
>+		intel_ring_advance(ring);
>+	}
>+
> 	return 0;
> }
> 
>-- 
>1.7.10.4
>

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