Open source GPL/LGPL release

userspace/units/enabled/nvgpu-enabled.c

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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 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 <stdlib.h>
+#include <unit/io.h>
+#include <unit/unit.h>
+#include <nvgpu/enabled.h>
+#include <nvgpu/gk20a.h>
+#include <nvgpu/posix/posix-fault-injection.h>
+
+#include "nvgpu-enabled.h"
+
+static unsigned long *original_enabled_flags;
+
+int test_nvgpu_init_enabled_flags(struct unit_module *m,
+					struct gk20a *g, void *args)
+{
+	int err;
+	struct nvgpu_posix_fault_inj *kmem_fi =
+		nvgpu_kmem_get_fault_injection();
+	original_enabled_flags = g->enabled_flags;
+
+	/*
+	 * Test 1 - Enable SW fault injection and check that init function
+	 * fails with -ENOMEM.
+	 */
+
+	nvgpu_posix_enable_fault_injection(kmem_fi, true, 0);
+	err = nvgpu_init_enabled_flags(g);
+	if (err != -ENOMEM) {
+		g->enabled_flags = original_enabled_flags;
+		unit_return_fail(m,
+			"enabled_flags init didn't fail as expected\n");
+	}
+	nvgpu_posix_enable_fault_injection(kmem_fi, false, 0);
+
+	/*
+	 * Test 2 - Check that enabled_flags are inited successfully
+	 * Use these flags (allocated memory) for next tests in module.
+	 */
+
+	err = nvgpu_init_enabled_flags(g);
+	if (err != 0) {
+		g->enabled_flags = original_enabled_flags;
+		unit_return_fail(m, "enabled_flags init failed\n");
+	}
+	return UNIT_SUCCESS;
+}
+
+int test_nvgpu_enabled_flags_false_check(struct unit_module *m,
+					struct gk20a *g, void *args)
+{
+	u32 i;
+	u32 n = NVGPU_MAX_ENABLED_BITS;
+
+	for (i = 1U; i < n; i++) { /* First flag is index 1 */
+		if (nvgpu_is_enabled(g, i)) {
+			g->enabled_flags = original_enabled_flags;
+			unit_return_fail(m,
+			     "enabled_flag %u inited to non-zero value\n", i);
+		}
+	}
+
+	return UNIT_SUCCESS;
+}
+
+int test_nvgpu_set_enabled(struct unit_module *m,
+					struct gk20a *g, void *args)
+{
+	u32 i;
+	u32 n = NVGPU_MAX_ENABLED_BITS;
+
+	for (i = 1U; i < n; i++) { /* First flag is index 1 */
+		nvgpu_set_enabled(g, i, true);
+		if (!nvgpu_is_enabled(g, i)) {
+			g->enabled_flags = original_enabled_flags;
+			unit_return_fail(m,
+				"enabled_flag %u could not be enabled\n", i);
+		}
+
+		nvgpu_set_enabled(g, i, false);
+		if (nvgpu_is_enabled(g, i)) {
+			g->enabled_flags = original_enabled_flags;
+			unit_return_fail(m,
+				"enabled_flag %u could not be disabled\n", i);
+		}
+	}
+
+	return UNIT_SUCCESS;
+}
+
+int test_nvgpu_free_enabled_flags(struct unit_module *m,
+					struct gk20a *g, void *args)
+{
+	nvgpu_free_enabled_flags(g);
+	g->enabled_flags = original_enabled_flags;
+	return UNIT_SUCCESS;
+}
+
+struct unit_module_test enabled_tests[] = {
+	/*
+	 * Init test should run first in order to use newly allocated memory.
+	 */
+	UNIT_TEST(init, test_nvgpu_init_enabled_flags, NULL, 0),
+
+	UNIT_TEST(enabled_flags_false_check, test_nvgpu_enabled_flags_false_check, NULL, 0),
+	UNIT_TEST(set_enabled, test_nvgpu_set_enabled, NULL, 0),
+
+	UNIT_TEST(free, test_nvgpu_free_enabled_flags, NULL, 0),
+};
+
+UNIT_MODULE(enabled, enabled_tests, UNIT_PRIO_NVGPU_TEST);