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module.c

/*
 * PCBIT-D module support
 *
 * Copyright (C) 1996 Universidade de Lisboa
 * 
 * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
 *
 * This software may be used and distributed according to the terms of 
 * the GNU General Public License, incorporated herein by reference.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>

#include <linux/isdnif.h>
#include "pcbit.h"

MODULE_DESCRIPTION("ISDN4Linux: Driver for PCBIT-T card");
MODULE_AUTHOR("Pedro Roque Marques");
MODULE_LICENSE("GPL");

static int mem[MAX_PCBIT_CARDS];
static int irq[MAX_PCBIT_CARDS];

module_param_array(mem, int, NULL, 0);
module_param_array(irq, int, NULL, 0);

static int num_boards;
struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];

static int __init pcbit_init(void)
{
      int board;

      num_boards = 0;

      printk(KERN_NOTICE 
             "PCBIT-D device driver v 0.5-fjpc0 19991204 - "
             "Copyright (C) 1996 Universidade de Lisboa\n");

      if (mem[0] || irq[0]) 
      {
            for (board=0; board < MAX_PCBIT_CARDS && mem[board] && irq[board]; board++)
            {
                  if (!mem[board])
                        mem[board] = 0xD0000;
                  if (!irq[board])
                        irq[board] = 5;
                  
                  if (pcbit_init_dev(board, mem[board], irq[board]) == 0)
                        num_boards++;
            
                  else 
                  {
                        printk(KERN_WARNING 
                               "pcbit_init failed for dev %d", 
                               board + 1);
                        return -EIO;
                  }
            }
      }

      /* Hardcoded default settings detection */

      if (!num_boards)
      {
            printk(KERN_INFO 
                   "Trying to detect board using default settings\n");
            if (pcbit_init_dev(0, 0xD0000, 5) == 0)
                  num_boards++;
            else
                  return -EIO;
      }
      return 0;
}

static void __exit pcbit_exit(void)
{
#ifdef MODULE
      int board;

      for (board = 0; board < num_boards; board++)
            pcbit_terminate(board);
      printk(KERN_NOTICE 
             "PCBIT-D module unloaded\n");
#endif
}

#ifndef MODULE
#define MAX_PARA  (MAX_PCBIT_CARDS * 2)
static int __init pcbit_setup(char *line)
{
      int i, j, argc;
      char *str;
      int ints[MAX_PARA+1];

      str = get_options(line, MAX_PARA, ints);
      argc = ints[0];
      i = 0;
      j = 1;

      while (argc && (i<MAX_PCBIT_CARDS)) {

            if (argc) {
                  mem[i]      = ints[j];
                  j++; argc--;
            }
            
            if (argc) {
                  irq[i]      = ints[j];
                  j++; argc--;
            }

            i++;
      }
      return(1);
}
__setup("pcbit=", pcbit_setup);
#endif

module_init(pcbit_init);
module_exit(pcbit_exit);


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