To make exploration of different sorting orders and presentation of the
engines via the uabi easier, wrap the basic engine registration into a
mock (aka standalone) selftest.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_engine_user.c | 4 +
.../gpu/drm/i915/gt/selftest_engine_user.c | 86 +++++++++++++++++++
.../drm/i915/selftests/i915_mock_selftests.h | 3 +-
3 files changed, 92 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/i915/gt/selftest_engine_user.c
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c
index 7f7150a733f4..15bb05aa1986 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_user.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c
@@ -293,3 +293,7 @@ unsigned int intel_engines_has_context_isolation(struct drm_i915_private *i915)
return which;
}
+
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+#include "selftest_engine_user.c"
+#endif
diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_user.c b/drivers/gpu/drm/i915/gt/selftest_engine_user.c
new file mode 100644
index 000000000000..d11cc6a4af09
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/selftest_engine_user.c
@@ -0,0 +1,86 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "i915_drv.h"
+
+static void destroy_engines(struct drm_i915_private *i915)
+{
+ struct intel_engine_cs *engine, *next;
+
+ rbtree_postorder_for_each_entry_safe(engine, next,
+ &i915->uabi_engines, uabi_node)
+ kfree(engine);
+}
+
+static int mock_uabi_engines(void *arg)
+{
+ static const u8 limits[] = {
+ [RENDER_CLASS] = 1,
+ [COPY_ENGINE_CLASS] = 1,
+ [VIDEO_DECODE_CLASS] = I915_MAX_VCS,
+ [VIDEO_ENHANCEMENT_CLASS] = I915_MAX_VECS,
+ };
+ struct intel_engine_cs *engine;
+ struct drm_i915_private *i915;
+ unsigned long num_engines;
+ unsigned long found;
+ int c, i;
+ int err = 0;
+
+ i915 = kzalloc(sizeof(*i915), GFP_KERNEL);
+ if (!i915)
+ return -ENOMEM;
+
+ num_engines = 0;
+ for (c = 0; c < ARRAY_SIZE(limits); c++) {
+ for (i = 0; i < limits[c]; i++) {
+ engine = kzalloc(sizeof(*engine), GFP_KERNEL);
+ if (!engine)
+ goto err;
+
+ engine->i915 = i915;
+
+ engine->class = c;
+ engine->instance = i;
+
+ intel_engine_add_user(engine);
+ num_engines++;
+ }
+ }
+
+err:
+ /* Check as far as we got up to -- will explode if not quite right */
+ intel_engines_driver_register(i915);
+
+ found = 0;
+ for_each_uabi_engine(engine, i915) {
+ pr_info("%s (%d, %d) -> [%d, %d]\n",
+ engine->name,
+ engine->uabi_class,
+ engine->uabi_instance,
+ engine->class,
+ engine->instance);
+ found++;
+ }
+ if (found != num_engines) {
+ pr_err("Registered %lu engines; only found %lu uABI engines\n",
+ num_engines, found);
+ err = -EINVAL;
+ }
+
+ destroy_engines(i915);
+ kfree(i915);
+ return err;
+}
+
+int intel_engine_user_mock_selftests(void)
+{
+ static const struct i915_subtest tests[] = {
+ SUBTEST(mock_uabi_engines),
+ };
+
+ return i915_subtests(tests, NULL);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
index aa5a0e7f5d9e..9a2dd8350650 100644
--- a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
+++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
@@ -14,7 +14,8 @@ selftest(fence, i915_sw_fence_mock_selftests)
selftest(scatterlist, scatterlist_mock_selftests)
selftest(syncmap, i915_syncmap_mock_selftests)
selftest(uncore, intel_uncore_mock_selftests)
-selftest(engine, intel_engine_cs_mock_selftests)
+selftest(engine_cs, intel_engine_cs_mock_selftests)
+selftest(engine_user, intel_engine_user_mock_selftests)
selftest(timelines, intel_timeline_mock_selftests)
selftest(requests, i915_request_mock_selftests)
selftest(objects, i915_gem_object_mock_selftests)
--
2.24.0.rc0
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