Attachment 41318 Details for Bug 32535 – possible fix

[patch] possible fix

0001-drm-radeon-kms-soft-reset-the-grbm-block-at-resume.patch (text/plain), 1.67 KB, created by Alex Deucher on 2010-12-20 13:47:01 UTC

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Creator: Alex Deucher

Created: 2010-12-20 13:47:01 UTC

Size: 1.67 KB

patch

obsolete

>From ee88057d4c5a1511aa0af88069d9eab8e856faa9 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexdeucher@gmail.com>
>Date: Mon, 20 Dec 2010 16:44:39 -0500
>Subject: [PATCH] drm/radeon/kms: soft reset the grbm block at resume
>
>May fix:
>https://bugs.freedesktop.org/show_bug.cgi?id=32535
>
>Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
>---
> drivers/gpu/drm/radeon/r600.c  |    5 +++++
> drivers/gpu/drm/radeon/rv770.c |    5 +++++
> 2 files changed, 10 insertions(+), 0 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
>index 4ea503c..2078108 100644
>--- a/drivers/gpu/drm/radeon/r600.c
>+++ b/drivers/gpu/drm/radeon/r600.c
>@@ -2442,6 +2442,11 @@ int r600_resume(struct radeon_device *rdev)
> {
> 	int r;
> 
>+	/* reset the asic, the gfx blocks are often in a bad state
>+	 * after the driver is unloaded or after a resume
>+	 */
>+	if (radeon_asic_reset(rdev))
>+		dev_warn(rdev->dev, "GPU reset failed !\n");
> 	/* Do not reset GPU before posting, on r600 hw unlike on r500 hw,
> 	 * posting will perform necessary task to bring back GPU into good
> 	 * shape.
>diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
>index e414a14..5206cb3 100644
>--- a/drivers/gpu/drm/radeon/rv770.c
>+++ b/drivers/gpu/drm/radeon/rv770.c
>@@ -1188,6 +1188,11 @@ int rv770_resume(struct radeon_device *rdev)
> {
> 	int r;
> 
>+	/* reset the asic, the gfx blocks are often in a bad state
>+	 * after the driver is unloaded or after a resume
>+	 */
>+	if (radeon_asic_reset(rdev))
>+		dev_warn(rdev->dev, "GPU reset failed !\n");
> 	/* Do not reset GPU before posting, on rv770 hw unlike on r500 hw,
> 	 * posting will perform necessary task to bring back GPU into good
> 	 * shape.
>-- 
>1.7.1.1
>

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