60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
|
|
* (C) Copyright IBM Corp. 2004 All Rights Reserved.
|
|
* tape_class.h
|
|
*
|
|
* 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__ */
|