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/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);