1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_cs.c b/drivers/gpu/drm/i915/gt/selftest_engine_cs.c
new file mode 100644
index 000000000000..cfaa6b296835
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/selftest_engine_cs.c
@@ -0,0 +1,58 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "../i915_selftest.h"
+
+static int intel_mmio_bases_check(void *arg)
+{
+	int i, j;
+
+	for (i = 0; i < ARRAY_SIZE(intel_engines); i++) {
+		const struct engine_info *info = &intel_engines[i];
+		char name[INTEL_ENGINE_CS_MAX_NAME];
+		u8 prev = U8_MAX;
+
+		__sprint_engine_name(name, info);
+
+		for (j = 0; j < MAX_MMIO_BASES; j++) {
+			u8 gen = info->mmio_bases[j].gen;
+			u32 base = info->mmio_bases[j].base;
+
+			if (gen >= prev) {
+				pr_err("%s: %s: mmio base for gen %x "
+					"is before the one for gen %x\n",
+				       __func__, name, prev, gen);
+				return -EINVAL;
+			}
+
+			if (gen == 0)
+				break;
+
+			if (!base) {
+				pr_err("%s: %s: invalid mmio base (%x) "
+					"for gen %x at entry %u\n",
+				       __func__, name, base, gen, j);
+				return -EINVAL;
+			}
+
+			prev = gen;
+		}
+
+		pr_info("%s: min gen supported for %s = %d\n",
+			__func__, name, prev);
+	}
+
+	return 0;
+}
+
+int intel_engine_cs_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(intel_mmio_bases_check),
+	};
+
+	return i915_subtests(tests, NULL);
+}