Attachment 38734 Details for Bug 30199 – The Patch to fix this bug

[patch] The Patch to fix this bug

0001-drm-1915-save-the-right-fence-registers-for-Sandybri.patch (text/plain), 1.63 KB, created by Yuanhan Liu on 2010-09-16 00:54:49 UTC

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Creator: Yuanhan Liu

Created: 2010-09-16 00:54:49 UTC

Size: 1.63 KB

patch

obsolete

>From b6b7ccea6d252a33873caf5ee6feb6200e9d2300 Mon Sep 17 00:00:00 2001
>From: Yuanhan Liu <yuanhan.liu@intel.com>
>Date: Thu, 16 Sep 2010 15:50:45 +0800
>Subject: [PATCH] drm/1915: save the right fence registers for Sandybridge
>
>Sandybridge uses different address offset(0x100000) for fence table registers,
>so make sure we save the right fence registers before suspend.
>
>This would fix bug: https://bugs.freedesktop.org/show_bug.cgi?id=30199
>
>Signed-off-by: Yuanhan Liu <yuanhan.liu@intel.com>
>---
> drivers/gpu/drm/i915/i915_suspend.c |   10 ++++++++--
> 1 files changed, 8 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
>index 2c6b98f..ea09375 100644
>--- a/drivers/gpu/drm/i915/i915_suspend.c
>+++ b/drivers/gpu/drm/i915/i915_suspend.c
>@@ -789,7 +789,10 @@ int i915_save_state(struct drm_device *dev)
> 		dev_priv->saveSWF2[i] = I915_READ(SWF30 + (i << 2));
> 
> 	/* Fences */
>-	if (IS_I965G(dev)) {
>+	if (HAS_PCH_SPLIT(dev)) {
>+		for (i = 0; i < 16; i++)
>+			dev_priv->saveFENCE[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
>+	} else if (IS_I965G(dev)) {
> 		for (i = 0; i < 16; i++)
> 			dev_priv->saveFENCE[i] = I915_READ64(FENCE_REG_965_0 + (i * 8));
> 	} else {
>@@ -815,7 +818,10 @@ int i915_restore_state(struct drm_device *dev)
> 	I915_WRITE(HWS_PGA, dev_priv->saveHWS);
> 
> 	/* Fences */
>-	if (IS_I965G(dev)) {
>+	if (HAS_PCH_SPLIT(dev)) {
>+		for (i = 0; i < 16; i++)
>+			I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (i * 8), dev_priv->saveFENCE[i]);
>+	} else if (IS_I965G(dev)) {
> 		for (i = 0; i < 16; i++)
> 			I915_WRITE64(FENCE_REG_965_0 + (i * 8), dev_priv->saveFENCE[i]);
> 	} else {
>-- 
>1.7.2.2
>

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