gpu: nvgpu: unit: Add unit testing FW

Full documentation for this is in the unit testing
confluence page.

JIRA NVGPU-525
Bug 2261555

Change-Id: I463e6267eb0eb12b7313f8b275266e8faabe5ccf
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1683915
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

userspace/include/unit/io.h

@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2018, 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_IO_H__
+#define __UNIT_IO_H__
+
+struct unit_fw;
+struct unit_module;
+
+/*
+ * necessary for args(fw) macro. IO will always, in general, depend on args
+ * since the args will specify where IO should be directed to.
+ */
+#include <unit/args.h>
+
+#define core_msg(fw, msg, ...)						\
+	core_vbs(fw, 0, msg, ##__VA_ARGS__)
+#define core_msg_color(fw, color, msg, ...)				\
+	core_vbs_color(fw, color, 0, msg, ##__VA_ARGS__)
+
+#define core_vbs_color(fw, color, lvl, msg, ...)			\
+	do {								\
+		if ((lvl) > args(fw)->verbose_lvl)			\
+			continue;					\
+									\
+		/* Print if verbosity level is high enough. */		\
+		__core_print_stdout(fw, color, msg, ##__VA_ARGS__);	\
+	} while (0)
+#define core_vbs(fw, lvl, msg, ...)					\
+	core_vbs_color(fw, NULL, lvl, msg, ##__VA_ARGS__)
+
+#define core_err(fw, msg, ...)						\
+	__core_print_stderr(fw, "(%s:%d) " msg,				\
+			    __func__, __LINE__, ##__VA_ARGS__)
+
+/*
+ * Output macro for unit tests to use.
+ */
+#define unit_info(unit, msg, ...)					\
+	__unit_info_color(unit, NULL, msg, ##__VA_ARGS__)
+#define unit_err(unit, msg, ...)					\
+	__unit_info_color(unit, C_RED, msg, ##__VA_ARGS__)
+
+/*
+ * Don't go overboard with these!!!
+ */
+#define C_RED     "\x1B[31m"
+#define C_GREEN   "\x1B[32m"
+#define C_YELLOW  "\x1B[33m"
+#define C_BLUE    "\x1B[34m"
+#define C_MAGENTA "\x1B[35m"
+#define C_CYAN    "\x1B[36m"
+#define C_WHITE   "\x1B[37m"
+#define C_RESET   "\x1B[0m"
+
+/*
+ * Printing functions. Do not use these directly. Instead use the provided
+ * macros.
+ */
+__attribute__((format (printf, 3, 4)))
+void __core_print_stdout(struct unit_fw *fw, const char *color,
+			 const char *fmt, ...);
+__attribute__((format (printf, 2, 3)))
+void __core_print_stderr(struct unit_fw *fw, const char *fmt, ...);
+__attribute__((format (printf, 3, 4)))
+void __unit_info_color(struct unit_module *unit, const char *color,
+		       const char *fmt, ...);
+
+#endif