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/src/io.c

@@ -0,0 +1,105 @@
+/*
+ * 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.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include <unit/io.h>
+#include <unit/args.h>
+#include <unit/core.h>
+#include <unit/unit.h>
+
+#define MAX_LOG_LINE_LENGTH		4096
+
+static void __core_print_file(struct unit_fw *fw, FILE *filp,
+			      const char *prefix, const char *msg,
+			      const char *color)
+{
+	if (color == NULL || args(fw)->no_color)
+		color = "";
+
+	fprintf(filp, "[%s%s%s] %s%s%s",
+		color, prefix, C_RESET,
+		color, msg, C_RESET);
+}
+
+__attribute__((format (printf, 3, 4)))
+void __core_print_stdout(struct unit_fw *fw, const char *color,
+			 const char *fmt, ...)
+{
+	va_list args;
+	char buf[MAX_LOG_LINE_LENGTH];
+
+	va_start(args, fmt);
+	vsnprintf(buf, MAX_LOG_LINE_LENGTH, fmt, args);
+	va_end(args);
+
+	buf[MAX_LOG_LINE_LENGTH - 1] = 0;
+
+	__core_print_file(fw, stdout, "C", buf, color);
+}
+
+__attribute__((format (printf, 2, 3)))
+void __core_print_stderr(struct unit_fw *fw, const char *fmt, ...)
+{
+	va_list args;
+	char buf[MAX_LOG_LINE_LENGTH];
+
+	va_start(args, fmt);
+	vsnprintf(buf, MAX_LOG_LINE_LENGTH, fmt, args);
+	va_end(args);
+
+	buf[MAX_LOG_LINE_LENGTH - 1] = 0;
+
+	__core_print_file(fw, stdout, "E", buf, C_RED);
+}
+
+__attribute__((format (printf, 3, 4)))
+void __unit_info_color(struct unit_module *unit, const char *color,
+		       const char *fmt, ...)
+{
+	va_list args;
+	char buf[MAX_LOG_LINE_LENGTH];
+	char *msg_start;
+	int written;
+
+	/*
+	 * Default color for module prints is blue. Users can still turn this
+	 * off with '-C'.
+	 */
+	if (color == NULL)
+		color = C_BLUE;
+
+	/*
+	 * First prepend the unit name to the print.
+	 */
+	written = snprintf(buf, MAX_LOG_LINE_LENGTH, "  [%s] ", unit->name);
+
+	msg_start = buf + written;
+
+	va_start(args, fmt);
+	vsnprintf(msg_start, MAX_LOG_LINE_LENGTH - written, fmt, args);
+	va_end(args);
+
+	__core_print_file(unit->fw, stdout, "T", buf, color);
+}