1 files changed, 58 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/selftests/intel_engine_cs.c b/drivers/gpu/drm/i915/selftests/intel_engine_cs.c
new file mode 100644
index 000000000000..cfaa6b296835
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/intel_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);
+}