linux/drivers/s390/char/tape_class.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

62 lines
1.6 KiB
C

/*
* (C) Copyright IBM Corp. 2004 All Rights Reserved.
* tape_class.h ($Revision: 1.4 $)
*
* 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/kobject.h>
#include <linux/kobj_map.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 class_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,
struct file_operations *fops,
char * device_name,
char * node_name
);
void unregister_tape_dev(struct tape_class_device *tcd);
#endif /* __TAPE_CLASS_H__ */