1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index aeef45679897..28f38b02a5d2 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -2041,6 +2041,47 @@ void i915_request_show(struct drm_printer *m,
 		   name);
 }
 
+static bool engine_match_ring(struct intel_engine_cs *engine, struct i915_request *rq)
+{
+	u32 ring = ENGINE_READ(engine, RING_START);
+
+	return ring == i915_ggtt_offset(rq->ring->vma);
+}
+
+static bool match_ring(struct i915_request *rq)
+{
+	struct intel_engine_cs *engine;
+	bool found;
+	int i;
+
+	if (!intel_engine_is_virtual(rq->engine))
+		return engine_match_ring(rq->engine, rq);
+
+	found = false;
+	i = 0;
+	while ((engine = intel_engine_get_sibling(rq->engine, i++))) {
+		found = engine_match_ring(engine, rq);
+		if (found)
+			break;
+	}
+
+	return found;
+}
+
+enum i915_request_state i915_test_request_state(struct i915_request *rq)
+{
+	if (i915_request_completed(rq))
+		return I915_REQUEST_COMPLETE;
+
+	if (!i915_request_started(rq))
+		return I915_REQUEST_PENDING;
+
+	if (match_ring(rq))
+		return I915_REQUEST_ACTIVE;
+
+	return I915_REQUEST_QUEUED;
+}
+
 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
 #include "selftests/mock_request.c"
 #include "selftests/i915_request.c"