drm/i915: Add selftests for i915_gem_request

Simple starting point for adding seltests for i915_gem_request, first
mock a device (with engines and contexts) that allows us to construct
and execute a request, along with waiting for the request to complete.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-10-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c
index f31deeb..24571a5 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -1198,3 +1198,8 @@ void i915_gem_retire_requests(struct drm_i915_private *dev_priv)
        for_each_engine(engine, dev_priv, id)
                engine_retire_requests(engine);
 }
+
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+#include "selftests/mock_request.c"
+#include "selftests/i915_gem_request.c"
+#endif

diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_request.c b/drivers/gpu/drm/i915/selftests/i915_gem_request.c
new file mode 100644 (file)
index 0000000..9921d1c
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_request.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "../i915_selftest.h"
+
+#include "mock_gem_device.h"
+
+static int igt_add_request(void *arg)
+{
+       struct drm_i915_private *i915 = arg;
+       struct drm_i915_gem_request *request;
+       int err = -ENOMEM;
+
+       /* Basic preliminary test to create a request and let it loose! */
+
+       mutex_lock(&i915->drm.struct_mutex);
+       request = mock_request(i915->engine[RCS],
+                              i915->kernel_context,
+                              HZ / 10);
+       if (!request)
+               goto out_unlock;
+
+       i915_add_request(request);
+
+       err = 0;
+out_unlock:
+       mutex_unlock(&i915->drm.struct_mutex);
+       return err;
+}
+
+int i915_gem_request_mock_selftests(void)
+{
+       static const struct i915_subtest tests[] = {
+               SUBTEST(igt_add_request),
+       };
+       struct drm_i915_private *i915;
+       int err;
+
+       i915 = mock_gem_device();
+       if (!i915)
+               return -ENOMEM;
+
+       err = i915_subtests(tests, i915);
+       drm_dev_unref(&i915->drm);
+
+       return err;
+}

diff --git a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
index 80458e2..bda9824 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
+++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
@@ -11,3 +11,4 @@
 selftest(sanitycheck, i915_mock_sanitycheck) /* keep first (igt selfcheck) */
 selftest(scatterlist, scatterlist_mock_selftests)
 selftest(breadcrumbs, intel_breadcrumbs_mock_selftests)
+selftest(requests, i915_gem_request_mock_selftests)