Attachment 124675 Details for Bug 96584 – More skylake w/a

[patch] More skylake w/a

0001-drm-i915-More-skylake-workarounds.patch (text/plain), 1.32 KB, created by Chris Wilson on 2016-06-23 06:27:21 UTC

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Creator: Chris Wilson

Created: 2016-06-23 06:27:21 UTC

Size: 1.32 KB

patch

obsolete

>From 2f4d21a337f3e69f461f760c9060d68e605272fa Mon Sep 17 00:00:00 2001
>From: Chris Wilson <chris@chris-wilson.co.uk>
>Date: Thu, 23 Jun 2016 07:24:39 +0100
>Subject: [PATCH] drm/i915: More skylake workarounds
>
>---
> drivers/gpu/drm/i915/i915_gem_gtt.c | 12 +++++++++++-
> 1 file changed, 11 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
>index a8be1c2..ee51bba 100644
>--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
>+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
>@@ -2569,6 +2569,16 @@ static void gen6_gmch_remove(struct i915_address_space *vm)
> 	cleanup_scratch(vm);
> }
> 
>+static bool need_pte_wa(struct drm_i915_private *dev_priv)
>+{
>+#ifdef CONFIG_INTEL_IOMMU
>+	if (intel_iommu_gfx_mapped && IS_SKYLAKE(dev_priv))
>+		return true;
>+#endif
>+
>+	return false;
>+}
>+
> static int gen8_gmch_probe(struct i915_ggtt *ggtt)
> {
> 	struct drm_i915_private *dev_priv = ggtt_to_i915(ggtt);
>@@ -2608,7 +2618,7 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
> 	ggtt->base.unbind_vma = ggtt_unbind_vma;
> 	ggtt->base.insert_page = gen8_ggtt_insert_page;
> 	ggtt->base.clear_range = nop_clear_range;
>-	if (!USES_FULL_PPGTT(dev_priv))
>+	if (!USES_FULL_PPGTT(dev_priv) || need_pte_wa(dev_priv))
> 		ggtt->base.clear_range = gen8_ggtt_clear_range;
> 
> 	ggtt->base.insert_entries = gen8_ggtt_insert_entries;
>-- 
>1.9.1
>

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