tid_proc.c

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 module" /proc routines  (see AR pg: 74) */
/*  This should be a module of its own */

#define __NO_VERSION__


#include "tid_def.h"

#ifndef CONFIG_PROC_FS
#  define CONFIG_PROC_FS     /* This is for proc_fs.h */
#endif

#include "linux/proc_fs.h"

     int
tid_edit_mem(char* b, char **start, off_t offset, int len, int unused)
     /* Edit the Trivial device info */
{
  Tid_Dev *dev = &tid_dev_struct;              /* The device descriptor */
  int  x;                         /* The store index in the output page */

  x = sprintf(b, "***tid0:\n");

  /* This code does not check for output buffer overflow.
   * We must do such checks if our output tends to become more voluminous.
   */

  x += sprintf (b+x, "   %s= %8lx\n", "# of chars in the device   ",
		(long)dev->nbChars);

  x += sprintf (b+x, "   %s= %8lx\n", "# of resets                ",
		dev->uniqueId);

  x += sprintf (b+x, "   %s= %8lx\n", "Max # of chars             ",
		(long)dev->maxChars);

  x += sprintf (b+x, "   %s= %8lx\n", "# of bh activations        ",
		dev->nbBhActiv);

  x += sprintf (b+x, "   %s= %8lx\n", "# of interrutps since init ",
		dev->nbIntrEver);

  x += sprintf (b+x, "   %s= %8lx\n", "# of wakeups since init    ",
		dev->nbWakeUp);

  x += sprintf (b+x, "   %s= %8lx\n", "last wakeup code           ",
		dev->lastWakeup);

  return x;  /* Do not count the trailing zero */
}

static struct proc_dir_entry tid_proc_entry = {
        0,                 /* low_ino: the inode -- dynamic */
        6, "tidmem",       /* len of name and name */
        S_IFREG | S_IRUGO, /* mode */
        1, 0, 0,           /* nlinks, owner, group */
        0, NULL,           /* size - unused; operations -- use default */
        &tid_edit_mem,     /* function used to read data */
        /* nothing more */
};


   int
tid_proc_register(void)
     /* Register the trivial device in /proc */
{
  return proc_register(&proc_root, &tid_proc_entry);
}

    void
tid_proc_unregister(void)
{
  proc_unregister(&proc_root, tid_proc_entry.low_ino);
}