drivers/isdn/pcbit/module.c

   1 /*
   2  * PCBIT-D module support
   3  *
   4  * Copyright (C) 1996 Universidade de Lisboa
   5  *
   6  * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
   7  *
   8  * This software may be used and distributed according to the terms of
   9  * the GNU General Public License, incorporated herein by reference.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/init.h>
  14 #include <linux/string.h>
  15 #include <linux/kernel.h>
  16 #include <linux/skbuff.h>
  17
  18 #include <linux/isdnif.h>
  19 #include "pcbit.h"
  20
  21 MODULE_DESCRIPTION("ISDN4Linux: Driver for PCBIT-T card");
  22 MODULE_AUTHOR("Pedro Roque Marques");
  23 MODULE_LICENSE("GPL");
  24
  25 static int mem[MAX_PCBIT_CARDS];
  26 static int irq[MAX_PCBIT_CARDS];
  27
  28 module_param_array(mem, int, NULL, 0);
  29 module_param_array(irq, int, NULL, 0);
  30
  31 static int num_boards;
  32 struct pcbit_dev *dev_pcbit[MAX_PCBIT_CARDS];
  33
  34 static int __init pcbit_init(void)
  35 {
  36         int board;
  37
  38         num_boards = 0;
  39
  40         printk(KERN_NOTICE
  41                "PCBIT-D device driver v 0.5-fjpc0 19991204 - "
  42                "Copyright (C) 1996 Universidade de Lisboa\n");
  43
  44         if (mem[0] || irq[0])
  45         {
  46                 for (board = 0; board < MAX_PCBIT_CARDS && mem[board] && irq[board]; board++)
  47                 {
  48                         if (!mem[board])
  49                                 mem[board] = 0xD0000;
  50                         if (!irq[board])
  51                                 irq[board] = 5;
  52
  53                         if (pcbit_init_dev(board, mem[board], irq[board]) == 0)
  54                                 num_boards++;
  55
  56                         else
  57                         {
  58                                 printk(KERN_WARNING
  59                                        "pcbit_init failed for dev %d",
  60                                        board + 1);
  61                                 return -EIO;
  62                         }
  63                 }
  64         }
  65
  66         /* Hardcoded default settings detection */
  67
  68         if (!num_boards)
  69         {
  70                 printk(KERN_INFO
  71                        "Trying to detect board using default settings\n");
  72                 if (pcbit_init_dev(0, 0xD0000, 5) == 0)
  73                         num_boards++;
  74                 else
  75                         return -EIO;
  76         }
  77         return 0;
  78 }
  79
  80 static void __exit pcbit_exit(void)
  81 {
  82 #ifdef MODULE
  83         int board;
  84
  85         for (board = 0; board < num_boards; board++)
  86                 pcbit_terminate(board);
  87         printk(KERN_NOTICE
  88                "PCBIT-D module unloaded\n");
  89 #endif
  90 }
  91
  92 #ifndef MODULE
  93 #define MAX_PARA        (MAX_PCBIT_CARDS * 2)
  94 static int __init pcbit_setup(char *line)
  95 {
  96         int i, j, argc;
  97         char *str;
  98         int ints[MAX_PARA + 1];
  99
 100         str = get_options(line, MAX_PARA, ints);
 101         argc = ints[0];
 102         i = 0;
 103         j = 1;
 104
 105         while (argc && (i < MAX_PCBIT_CARDS)) {
 106
 107                 if (argc) {
 108                         mem[i]  = ints[j];
 109                         j++; argc--;
 110                 }
 111
 112                 if (argc) {
 113                         irq[i]  = ints[j];
 114                         j++; argc--;
 115                 }
 116
 117                 i++;
 118         }
 119         return (1);
 120 }
 121 __setup("pcbit=", pcbit_setup);
 122 #endif
 123
 124 module_init(pcbit_init);
 125 module_exit(pcbit_exit);