gpu: nvgpu: unit: add bit-utils test

Add test for common.utils.bit-utils.

JIRA NVGPU-4818

Change-Id: Ibb07d01fdf312e661bba76fe3c09b69424b62420
Signed-off-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2279609
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

userspace/units/interface/bit-utils/Makefile

@@ -0,0 +1,26 @@
+# Copyright (c) 2020, 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.
+
+.SUFFIXES:
+
+OBJS   = bit-utils.o
+MODULE = bit-utils
+
+include ../../Makefile.units

userspace/units/interface/bit-utils/Makefile.interface.tmk

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+################################### tell Emacs this is a -*- makefile-gmake -*-
+#
+# Copyright (c) 2020, NVIDIA CORPORATION.  All Rights Reserved.
+#
+# NVIDIA CORPORATION and its licensors retain all intellectual property
+# and proprietary rights in and to this software, related documentation
+# and any modifications thereto.  Any use, reproduction, disclosure or
+# distribution of this software and related documentation without an express
+# license agreement from NVIDIA CORPORATION is strictly prohibited.
+#
+# tmake for SW Mobile component makefile
+#
+###############################################################################
+
+NVGPU_UNIT_NAME=bit-utils
+
+include $(NV_COMPONENT_DIR)/../../Makefile.units.common.interface.tmk
+
+# Local Variables:
+# indent-tabs-mode: t
+# tab-width: 8
+# End:
+# vi: set tabstop=8 noexpandtab:

userspace/units/interface/bit-utils/Makefile.tmk

@@ -0,0 +1,24 @@
+################################### tell Emacs this is a -*- makefile-gmake -*-
+#
+# Copyright (c) 2020, NVIDIA CORPORATION.  All Rights Reserved.
+#
+# NVIDIA CORPORATION and its licensors retain all intellectual property
+# and proprietary rights in and to this software, related documentation
+# and any modifications thereto.  Any use, reproduction, disclosure or
+# distribution of this software and related documentation without an express
+# license agreement from NVIDIA CORPORATION is strictly prohibited.
+#
+# tmake for SW Mobile component makefile
+#
+###############################################################################
+
+NVGPU_UNIT_NAME=bit-utils
+NVGPU_UNIT_SRCS=bit-utils.c
+
+include $(NV_COMPONENT_DIR)/../../Makefile.units.common.tmk
+
+# Local Variables:
+# indent-tabs-mode: t
+# tab-width: 8
+# End:
+# vi: set tabstop=8 noexpandtab:

userspace/units/interface/bit-utils/bit-utils.c

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2020, 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 <unit/unit.h>
+#include <unit/io.h>
+#include <nvgpu/posix/io.h>
+
+#include <nvgpu/gk20a.h>
+#include <nvgpu/utils.h>
+
+#include "bit-utils.h"
+
+int test_hi_lo(struct unit_module *m, struct gk20a *g, void *args)
+{
+	u64 val_hi = 0xfedcba01;
+	u64 val_lo = 0x12345678;
+	u64 full_val = (val_hi << 32) | val_lo;
+
+	unit_assert(u64_hi32(full_val) == val_hi, return UNIT_FAIL);
+	unit_assert(u64_lo32(full_val) == val_lo, return UNIT_FAIL);
+	unit_assert(hi32_lo32_to_u64(val_hi, val_lo) == full_val,
+							return UNIT_FAIL);
+
+	return UNIT_SUCCESS;
+}
+
+int test_fields(struct unit_module *m, struct gk20a *g, void *args)
+{
+	unit_assert(set_field(0U, 0x000ff000, 0x00055000) == 0x00055000,
+							return UNIT_FAIL);
+	unit_assert(set_field(0U, 0xffffffff, 0x00055000) == 0x00055000,
+							return UNIT_FAIL);
+	unit_assert(set_field(0xffffffff, 0xffffffff, 0x00055000) == 0x00055000,
+							return UNIT_FAIL);
+	unit_assert(set_field(0xffffffff, 0x000ff000, 0x00055000) == 0xfff55fff,
+							return UNIT_FAIL);
+
+	unit_assert(get_field(0U, 0xffffffff) == 0x0, return UNIT_FAIL);
+	unit_assert(get_field(0xffffffff, 0xffffffff) == 0xffffffff,
+							return UNIT_FAIL);
+	unit_assert(get_field(0xffffffff, 0x000ff000) == 0x000ff000,
+							return UNIT_FAIL);
+
+	return UNIT_SUCCESS;
+}
+
+struct unit_module_test bit_utils_tests[] = {
+	UNIT_TEST(hi_lo,	test_hi_lo,		NULL, 0),
+	UNIT_TEST(fields,	test_fields,		NULL, 0),
+};
+
+UNIT_MODULE(bit_utils, bit_utils_tests, UNIT_PRIO_NVGPU_TEST);

userspace/units/interface/bit-utils/bit-utils.h

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2020, 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.
+ */
+
+#ifndef UNIT_BIT_UTILS_H
+#define UNIT_BIT_UTILS_H
+
+struct gk20a;
+struct unit_module;
+
+/** @addtogroup SWUTS-interface-bit-utils
+ *  @{
+ *
+ * Software Unit Test Specification for common.utils.bit-utils
+ */
+
+/**
+ * Test specification for: test_hi_lo
+ *
+ * Description: Verify functionality of hi/lo bit-utils APIs.
+ *
+ * Test Type: Feature
+ *
+ * Targets: u64_hi32, u64_lo32, hi32_lo32_to_u64
+ *
+ * Input: None
+ *
+ * Steps:
+ * - Call u64_hi32 with a u64 value and verify the correct value is returned.
+ * - Call u64_lo32 with a u64 value and verify the correct value is returned.
+ * - Call hi32_lo32_to_u64 with two u32 values and verify the correct u64 value
+ *   is returned.
+ *
+ * Output: Returns PASS if expected result is met, FAIL otherwise.
+ */
+int test_hi_lo(struct unit_module *m, struct gk20a *g, void *args);
+
+/**
+ * Test specification for: test_fields
+ *
+ * Description: Verify functionality of bit field bit-util APIs.
+ *
+ * Test Type: Feature
+ *
+ * Targets: set_field, get_field
+ *
+ * Input: None
+ *
+ * Steps:
+ * - Call set_field() with a variety of inputs and verify the correct value is
+ *   returned.
+ * - Call get_field() with a variety of inputs and verify the correct value is
+ *   returned.
+ *
+ * Output: Returns PASS if expected result is met, FAIL otherwise.
+ */
+int test_fields(struct unit_module *m, struct gk20a *g, void *args);
+
+/**
+ * @}
+ */
+
+#endif /* UNIT_BIT_UTILS_H */