Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / s390 / char / tape_class.h

diff --git a/kernel/drivers/s390/char/tape_class.h b/kernel/drivers/s390/char/tape_class.h
new file mode 100644 (file)
index 0000000..a332c10
--- /dev/null
+++ b/kernel/drivers/s390/char/tape_class.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright IBM Corp. 2004   All Rights Reserved.
+ *
+ * Tape class device support
+ *
+ * Author: Stefan Bader <shbader@de.ibm.com>
+ * Based on simple class device code by Greg K-H
+ */
+#ifndef __TAPE_CLASS_H__
+#define __TAPE_CLASS_H__
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <linux/cdev.h>
+
+#include <linux/device.h>
+#include <linux/kdev_t.h>
+
+#define TAPECLASS_NAME_LEN     32
+
+struct tape_class_device {
+       struct cdev             *char_device;
+       struct device           *class_device;
+       char                    device_name[TAPECLASS_NAME_LEN];
+       char                    mode_name[TAPECLASS_NAME_LEN];
+};
+
+/*
+ * Register a tape device and return a pointer to the tape class device
+ * created by the call.
+ *
+ * device
+ *     The pointer to the struct device of the physical (base) device.
+ * dev
+ *     The intended major/minor number. The major number may be 0 to
+ *     get a dynamic major number.
+ * fops
+ *     The pointer to the drivers file operations for the tape device.
+ * device_name
+ *     Pointer to the logical device name (will also be used as kobject name
+ *     of the cdev). This can also be called the name of the tape class
+ *     device.
+ * mode_name
+ *     Points to the name of the tape mode. This creates a link with that
+ *     name from the physical device to the logical device (class).
+ */
+struct tape_class_device *register_tape_dev(
+       struct device *         device,
+       dev_t                   dev,
+       const struct file_operations *fops,
+       char *                  device_name,
+       char *                  node_name
+);
+void unregister_tape_dev(struct device *device, struct tape_class_device *tcd);
+
+#endif /* __TAPE_CLASS_H__ */