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/*

   ataraid.h  Copyright (C) 2001 Red Hat, Inc. All rights reserved.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2, or (at your option)

   any later version.

   You should have received a copy of the GNU General Public License

   (for example /usr/src/linux/COPYING); if not, write to the Free

   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

   Authors:     Arjan van de Ven <arjanv@redhat.com>

*/

#include <linux/module.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <asm/semaphore.h>

#include <linux/blkdev.h>

#include <linux/blkpg.h>

#include <linux/genhd.h>

#include <linux/ioctl.h>

#include <linux/ide.h>

#include <asm/uaccess.h>

#define ATAMAJOR 114

#define SHIFT 4

#define MINOR_MASK 15

#define MAJOR_MASK 15

/* raid_device_operations is a light struct block_device_operations with an

   added method for make_request */

struct raid_device_operations {

        int (*open) (struct inode *, struct file *);

        int (*release) (struct inode *, struct file *);

        int (*ioctl) (struct inode *, struct file *, unsigned, unsigned long);

        int (*make_request) (request_queue_t *q, int rw, struct buffer_head * bh);

};

struct geom {

        unsigned char heads;

        unsigned int cylinders;

        unsigned char sectors;

};

/* structure for the splitting of bufferheads */

struct ataraid_bh_private {

        struct buffer_head *parent;

        atomic_t count;

};

extern struct gendisk ataraid_gendisk;

extern int ataraid_get_device(struct raid_device_operations *fops);

extern void ataraid_release_device(int device);

extern int get_blocksize(kdev_t dev);

extern void ataraid_register_disk(int device,long size);

extern struct buffer_head *ataraid_get_bhead(void);

extern struct ataraid_bh_private *ataraid_get_private(void);

extern void ataraid_end_request(struct buffer_head *bh, int uptodate);