Attachment 100999 Details for Bug 79996 – Clear all unwanted bits from GT_MODE

[patch] Clear all unwanted bits from GT_MODE

0001-Clear-all-unwanted-bits-from-GT_MODE.patch (text/plain), 1.54 KB, created by Chris Wilson on 2014-06-13 18:40:41 UTC

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Creator: Chris Wilson

Created: 2014-06-13 18:40:41 UTC

Size: 1.54 KB

patch

obsolete

>From 5fd5cd377621a96133b2f76c5893a7193e5176ec Mon Sep 17 00:00:00 2001
>From: Chris Wilson <chris@chris-wilson.co.uk>
>Date: Fri, 13 Jun 2014 19:38:40 +0100
>Subject: [PATCH] Clear all unwanted bits from GT_MODE
>
>References: https://bugs.freedesktop.org/show_bug.cgi?id=79996
>---
> drivers/gpu/drm/i915/intel_pm.c | 12 +++++++-----
> 1 file changed, 7 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>index 04fab0e7f88d..4b907eb8ad2f 100644
>--- a/drivers/gpu/drm/i915/intel_pm.c
>+++ b/drivers/gpu/drm/i915/intel_pm.c
>@@ -5095,14 +5095,11 @@ static void gen6_init_clock_gating(struct drm_device *dev)
> 	I915_WRITE(_3D_CHICKEN,
> 		   _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB));
> 
>-	/* WaSetupGtModeTdRowDispatch:snb */
>-	if (IS_SNB_GT1(dev))
>-		I915_WRITE(GEN6_GT_MODE,
>-			   _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE));
>-
> 	/* WaDisable_RenderCache_OperationalFlush:snb */
> 	I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE));
> 
>+	I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_DISABLE(0xffff));
>+
> 	/*
> 	 * BSpec recoomends 8x4 when MSAA is used,
> 	 * however in practice 16x4 seems fastest.
>@@ -5114,6 +5111,11 @@ static void gen6_init_clock_gating(struct drm_device *dev)
> 	I915_WRITE(GEN6_GT_MODE,
> 		   GEN6_WIZ_HASHING_MASK | GEN6_WIZ_HASHING_16x4);
> 
>+	/* WaSetupGtModeTdRowDispatch:snb */
>+	if (IS_SNB_GT1(dev))
>+		I915_WRITE(GEN6_GT_MODE,
>+			   _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE));
>+
> 	ilk_init_lp_watermarks(dev);
> 
> 	I915_WRITE(CACHE_MODE_0,
>-- 
>2.0.0
>

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Attachments on bug 79996: 100999 | 101181 | 106591 | 108894

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