drm/i915: Enable SandyBridge blitter ring
Based on an original patch by Zhenyu Wang, this initializes the BLT ring for
SandyBridge and enables support for user execbuffers.
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 1ffeb1c..1851ca4 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -133,6 +133,7 @@
mutex_lock(&dev->struct_mutex);
intel_cleanup_ring_buffer(dev, &dev_priv->render_ring);
intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring);
+ intel_cleanup_ring_buffer(dev, &dev_priv->blt_ring);
mutex_unlock(&dev->struct_mutex);
/* Clear the HWS virtual address at teardown */
@@ -763,6 +764,9 @@
case I915_PARAM_HAS_BSD:
value = HAS_BSD(dev);
break;
+ case I915_PARAM_HAS_BLT:
+ value = HAS_BLT(dev);
+ break;
default:
DRM_DEBUG_DRIVER("Unknown parameter %d\n",
param->param);