diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index c33b0a41a73..96f8efc7a0d 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -394,6 +394,21 @@ void intel_detect_pch(struct drm_device *dev) } } +bool i915_semaphore_is_enabled(struct drm_device *dev) +{ + if (INTEL_INFO(dev)->gen < 6) + return 0; + + if (i915_semaphores >= 0) + return i915_semaphores; + + /* Enable semaphores on SNB when IO remapping is off */ + if (INTEL_INFO(dev)->gen == 6) + return !intel_iommu_enabled; + + return 1; +} + void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv) { int count; |