Attachment 72775 Details for Bug 58897 – reset unclaimed register writes errors on takeover

[patch] reset unclaimed register writes errors on takeover

0001-drm-i915-reset-unclaimed-write-errors-on-haswell.patch (text/plain), 1.01 KB, created by Daniel Vetter on 2013-01-10 10:08:19 UTC

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Creator: Daniel Vetter

Created: 2013-01-10 10:08:19 UTC

Size: 1.01 KB

patch

obsolete

>From 8f4d90b85174be96535b0c8c7fe001b0a0fe9d43 Mon Sep 17 00:00:00 2001
>From: Daniel Vetter <daniel.vetter@ffwll.ch>
>Date: Mon, 7 Jan 2013 10:43:13 +0100
>Subject: [PATCH] drm/i915: reset unclaimed write errors on haswell
>
>This could very well be caused by dirt left behind by the BIOS, so
>reset the unclaimed register write bit on takeover.
>
>Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58897
>Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>---
> drivers/gpu/drm/i915/intel_pm.c |    3 +++
> 1 file changed, 3 insertions(+)
>
>diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>index e6f54ff..40f1647 100644
>--- a/drivers/gpu/drm/i915/intel_pm.c
>+++ b/drivers/gpu/drm/i915/intel_pm.c
>@@ -4379,6 +4379,9 @@ void intel_gt_reset(struct drm_device *dev)
> 		if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
> 			__gen6_gt_force_wake_mt_reset(dev_priv);
> 	}
>+
>+	if (IS_HASWELL(dev))
>+		I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED);
> }
> 
> void intel_gt_init(struct drm_device *dev)
>-- 
>1.7.10.4
>

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