Open source GPL/LGPL release

drivers/gpu/nvgpu/os/linux/debug_bios.c

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2018-2019 NVIDIA Corporation.  All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <nvgpu/types.h>
+#include <nvgpu/nvgpu_init.h>
+
+#include "debug_bios.h"
+#include "os_linux.h"
+
+#include <linux/debugfs.h>
+#include <linux/uaccess.h>
+
+static int bios_version_show(struct seq_file *s, void *unused)
+{
+	struct gk20a *g = s->private;
+	int err;
+
+	err = gk20a_busy(g);
+	if (err != 0) {
+		return err;
+	}
+
+	seq_printf(s, "Version %02X.%02X.%02X.%02X.%02X\n",
+		(g->bios->vbios_version >> 24) & 0xFF,
+		(g->bios->vbios_version >> 16) & 0xFF,
+		(g->bios->vbios_version >> 8) & 0xFF,
+		(g->bios->vbios_version >> 0) & 0xFF,
+		(g->bios->vbios_oem_version) & 0xFF);
+
+	gk20a_idle(g);
+
+	return 0;
+}
+
+static int bios_version_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, bios_version_show, inode->i_private);
+}
+
+static const struct file_operations bios_version_fops = {
+	.open = bios_version_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+
+int nvgpu_bios_debugfs_init(struct gk20a *g)
+{
+	struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
+	struct dentry *gpu_root = l->debugfs;
+
+	debugfs_create_file("bios", S_IRUGO,
+			    gpu_root, g,
+			    &bios_version_fops);
+
+	return 0;
+}