trv_def.h

mpc8xx driver(led), based on tqm8

/***********************************************************************
 *
 * (C) Copyright 2000
 * Jean-Jacques Germond, Fr閐閞ic Soulier, Christian Batt; Alcatel
 * C/O [e-mail]
 *
 * All rights reserved.
 *
 * This code is free software; you can redistribute it and/or
 * modify it under the terms of the GNU *Library* General Public License
 * as published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This code 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
 * *Library* General Public License for more details.
 *
 * You should have received a copy of the GNU *Library* General Public
 * License along with this program (see file COPYING.LIB); if not,
 * write to the Free Software Foundation, Inc., 675 Mass Ave,
 * Cambridge, MA 02139, USA.
 *
 ***********************************************************************/

/*
 *
 * The "TRIVIAL DRIVER" (trv) project main include file
 * by Jean-Jacques Germond (jjg).
 *
 * Several parts of these source siles are derived from
 * Alessandro Rubini (AR) "LINUX DEVICE DRIVERS" excellent book.
 * and "scull" examples at ftp://ora.com/pub/examples/linux/drivers
 *
 */

#ifndef TRIVIAL_DRIVER_DEF
#define TRIVIAL_DRIVER_DEF

#define TRV_MAX_CHARS 100
#define TRV_MAJOR       120
#define TRV_MAX_DEVICES   4

#ifdef __KERNEL__

/* Definitions that are not exported to UNIX processes */

#include <linux/types.h> /* used later in this header */
#include "linux/module.h"
#include "linux/mm.h"
#include "linux/fs.h"

extern void* kmalloc(size_t, int);
extern void  kfree(const void *);


#define NUM(dev)    (MINOR(dev)) /* low  nibble */

/*  A TRV device */

typedef struct {
  int      size;          /* The buffer size (at the moment a constant) */
  int      nbchars;       /* The number of chars in the buffer */
  char*    buffer;        /* Where the data are in the kernel space */
} Trv_Dev;


extern int      trv_nr_devs;             /* The # of devices */
extern Trv_Dev* trv_devices;             /* The array of device descriptor */

extern void trv_proc_register(void);
extern void trv_proc_unregister(void);
extern int trv_copy_from_user(void *to, const void *from, unsigned long n);
extern int trv_copy_to_user  (void *to, const void *from, unsigned long n);

#endif
#endif