Open source GPL/LGPL release

drivers/gpu/nvgpu/os/posix/log.c

@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2018-2019, 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 <nvgpu/posix/log.h>
+#include <nvgpu/types.h>
+
+#include <nvgpu/gk20a.h>
+
+/*
+ * Define a length for log buffers. This is the buffer that the 'fmt, ...' part
+ * of __nvgpu_do_log_print() prints into.
+ */
+#define LOG_BUFFER_LENGTH	160
+
+/*
+ * Keep this roughly the same as the kernel log format.
+ */
+#define LOG_FMT			"nvgpu: %s %33s:%-4d [%-4s]  %s\n"
+
+static const char *log_types[] = {
+	"ERR",
+	"WRN",
+	"DBG",
+	"INFO",
+};
+
+static inline const char *nvgpu_log_name(struct gk20a *g)
+{
+	return "gpu.USS";
+}
+
+static void __nvgpu_really_print_log(const char *gpu_name,
+				     const char *func_name, int line,
+				     enum nvgpu_log_type type, const char *log)
+{
+	const char *name = gpu_name ? gpu_name : "";
+	const char *log_type;
+
+	if (type >= NVGPU_ERROR) {
+		log_type = log_types[type];
+		printf(LOG_FMT, name, func_name, line, log_type, log);
+	}
+}
+
+__attribute__((format (printf, 5, 6)))
+void nvgpu_log_msg_impl(struct gk20a *g, const char *func_name, int line,
+			enum nvgpu_log_type type, const char *fmt, ...)
+{
+	char log[LOG_BUFFER_LENGTH];
+	va_list args;
+
+	va_start(args, fmt);
+	(void) vsnprintf(log, LOG_BUFFER_LENGTH, fmt, args);
+	va_end(args);
+
+	__nvgpu_really_print_log(nvgpu_log_name(g),
+				 func_name, line, type, log);
+}
+
+__attribute__((format (printf, 5, 6)))
+void nvgpu_log_dbg_impl(struct gk20a *g, u64 log_mask,
+			const char *func_name, int line,
+			const char *fmt, ...)
+{
+	char log[LOG_BUFFER_LENGTH];
+	va_list args;
+
+	if ((log_mask & g->log_mask) == 0) {
+		return;
+	}
+
+	va_start(args, fmt);
+	(void) vsnprintf(log, LOG_BUFFER_LENGTH, fmt, args);
+	va_end(args);
+
+	__nvgpu_really_print_log(nvgpu_log_name(g),
+				 func_name, line, NVGPU_DEBUG, log);
+}