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| author | David S. Miller <davem@davemloft.net> | 2012-04-10 14:30:45 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-10 14:30:45 -0400 |
| commit | 06eb4eafbdc0796d741d139a44f1253278da8611 (patch) | |
| tree | fbdb44317130c371928154c9e6903e699fe2b995 /drivers/gpu/drm/i915/i915_dma.c | |
| parent | 32ed53b83ea5ec26a4dba90e18f5e0ff6c71eb48 (diff) | |
| parent | f68e556e23d1a4176b563bcb25d8baf2c5313f91 (diff) | |
| download | op-kernel-dev-06eb4eafbdc0796d741d139a44f1253278da8611.zip op-kernel-dev-06eb4eafbdc0796d741d139a44f1253278da8611.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 9341eb8..785f67f 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1183,6 +1183,21 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev) return can_switch; } +static bool +intel_enable_ppgtt(struct drm_device *dev) +{ + if (i915_enable_ppgtt >= 0) + return i915_enable_ppgtt; + +#ifdef CONFIG_INTEL_IOMMU + /* Disable ppgtt on SNB if VT-d is on. */ + if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) + return false; +#endif + + return true; +} + static int i915_load_gem_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -1197,7 +1212,7 @@ static int i915_load_gem_init(struct drm_device *dev) drm_mm_init(&dev_priv->mm.stolen, 0, prealloc_size); mutex_lock(&dev->struct_mutex); - if (i915_enable_ppgtt && HAS_ALIASING_PPGTT(dev)) { + if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) { /* PPGTT pdes are stolen from global gtt ptes, so shrink the * aperture accordingly when using aliasing ppgtt. */ gtt_size -= I915_PPGTT_PD_ENTRIES*PAGE_SIZE; @@ -1207,8 +1222,10 @@ static int i915_load_gem_init(struct drm_device *dev) i915_gem_do_init(dev, 0, mappable_size, gtt_size); ret = i915_gem_init_aliasing_ppgtt(dev); - if (ret) + if (ret) { + mutex_unlock(&dev->struct_mutex); return ret; + } } else { /* Let GEM Manage all of the aperture. * |
