From 20652097dadd9a7fb4d652f25466299974bc78f9 Mon Sep 17 00:00:00 2001 From: Zhenyu Wang Date: Thu, 13 Dec 2012 23:47:47 +0800 Subject: [PATCH] drm/i915: Fix missed needs_dmar setting From Ben's AGP dependence removal change, "needs_dmar" flag has not been properly setup for new chips using new GTT init function. This one adds missed setting of that flag to make sure we do pci mappings with IOMMU enabled. Signed-off-by: Zhenyu Wang Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_gtt.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index f7ac61ee1504..2c150dee78a7 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -639,6 +639,10 @@ int i915_gem_gtt_init(struct drm_device *dev) if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(40))) pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(40)); +#ifdef CONFIG_INTEL_IOMMU + dev_priv->mm.gtt->needs_dmar = 1; +#endif + /* For GEN6+ the PTEs for the ggtt live at 2MB + BAR0 */ gtt_bus_addr = pci_resource_start(dev->pdev, 0) + (2<<20); dev_priv->mm.gtt->gma_bus_addr = pci_resource_start(dev->pdev, 2);