1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/igt_flush_test.c b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
new file mode 100644
index 000000000000..c383d31d46b0
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
@@ -0,0 +1,51 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
+
+#include "i915_drv.h"
+#include "i915_selftest.h"
+
+#include "igt_flush_test.h"
+
+int igt_flush_test(struct drm_i915_private *i915)
+{
+	struct intel_gt *gt;
+	unsigned int i;
+	int ret = 0;
+
+	for_each_gt(gt, i915, i) {
+		struct intel_engine_cs *engine;
+		unsigned long timeout_ms = 0;
+		unsigned int id;
+
+		if (intel_gt_is_wedged(gt))
+			ret = -EIO;
+
+		for_each_engine(engine, gt, id) {
+			if (engine->props.preempt_timeout_ms > timeout_ms)
+				timeout_ms = engine->props.preempt_timeout_ms;
+		}
+
+		cond_resched();
+
+		/* 2x longest preempt timeout, experimentally determined */
+		if (intel_gt_wait_for_idle(gt, HZ * timeout_ms / 500) == -ETIME) {
+			pr_err("%pS timed out, cancelling all further testing.\n",
+			       __builtin_return_address(0));
+
+			GEM_TRACE("%pS timed out.\n",
+				  __builtin_return_address(0));
+			GEM_TRACE_DUMP();
+
+			intel_gt_set_wedged(gt);
+			ret = -EIO;
+		}
+	}
+
+	return ret;
+}