drm/i915: Add wait render timeout get param

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 262a74d..97a5a58 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1006,6 +1006,9 @@
 	case I915_PARAM_HAS_ALIASING_PPGTT:
 		value = dev_priv->mm.aliasing_ppgtt ? 1 : 0;
 		break;
+	case I915_PARAM_HAS_WAIT_TIMEOUT:
+		value = 1;
+		break;
 	default:
 		DRM_DEBUG_DRIVER("Unknown parameter %d\n",
 				 param->param);
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index aae346e..5c28ee1 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -300,6 +300,7 @@
 #define I915_PARAM_HAS_GEN7_SOL_RESET	 16
 #define I915_PARAM_HAS_LLC     	 	 17
 #define I915_PARAM_HAS_ALIASING_PPGTT	 18
+#define I915_PARAM_HAS_WAIT_TIMEOUT	 19
 
 typedef struct drm_i915_getparam {
 	int param;