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/sched.h>
  15 #include <linux/string.h>
  16 #include <linux/kernel.h>
  17 #include <linux/skbuff.h>
  18
  19 #include <linux/isdnif.h>
  20 #include "pcbit.h"
  21
  22 MODULE_DESCRIPTION("ISDN4Linux: Driver for PCBIT-T card");
  23 MODULE_AUTHOR("Pedro Roque Marques");
  24 MODULE_LICENSE("GPL");
  25
  26 static int mem[MAX_PCBIT_CARDS];
  27 static int irq[MAX_PCBIT_CARDS];
  28
  29 module_param_array(mem, int, NULL, 0);
  30 module_param_array(irq, int, NULL, 0);
  31
  32 static int num_boards;
  33 struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];
  34
  35 extern void pcbit_terminate(int board);
  36 extern int pcbit_init_dev(int board, int mem_base, int irq);
  37
  38 static int __init pcbit_init(void)
  39 {
  40         int board;
  41
  42         num_boards = 0;
  43
  44         printk(KERN_NOTICE
  45                "PCBIT-D device driver v 0.5-fjpc0 19991204 - "
  46                "Copyright (C) 1996 Universidade de Lisboa\n");
  47
  48         if (mem[0] || irq[0])
  49         {
  50                 for (board=0; board < MAX_PCBIT_CARDS && mem[board] && irq[board]; board++)
  51                 {
  52                         if (!mem[board])
  53                                 mem[board] = 0xD0000;
  54                         if (!irq[board])
  55                                 irq[board] = 5;
  56
  57                         if (pcbit_init_dev(board, mem[board], irq[board]) == 0)
  58                                 num_boards++;
  59
  60                         else
  61                         {
  62                                 printk(KERN_WARNING
  63                                        "pcbit_init failed for dev %d",
  64                                        board + 1);
  65                                 return -EIO;
  66                         }
  67                 }
  68         }
  69
  70         /* Hardcoded default settings detection */
  71
  72         if (!num_boards)
  73         {
  74                 printk(KERN_INFO
  75                        "Trying to detect board using default settings\n");
  76                 if (pcbit_init_dev(0, 0xD0000, 5) == 0)
  77                         num_boards++;
  78                 else
  79                         return -EIO;
  80         }
  81         return 0;
  82 }
  83
  84 static void __exit pcbit_exit(void)
  85 {
  86 #ifdef MODULE
  87         int board;
  88
  89         for (board = 0; board < num_boards; board++)
  90                 pcbit_terminate(board);
  91         printk(KERN_NOTICE
  92                "PCBIT-D module unloaded\n");
  93 #endif
  94 }
  95
  96 #ifndef MODULE
  97 #define MAX_PARA        (MAX_PCBIT_CARDS * 2)
  98 static int __init pcbit_setup(char *line)
  99 {
 100         int i, j, argc;
 101         char *str;
 102         int ints[MAX_PARA+1];
 103
 104         str = get_options(line, MAX_PARA, ints);
 105         argc = ints[0];
 106         i = 0;
 107         j = 1;
 108
 109         while (argc && (i<MAX_PCBIT_CARDS)) {
 110
 111                 if (argc) {
 112                         mem[i]  = ints[j];
 113                         j++; argc--;
 114                 }
 115
 116                 if (argc) {
 117                         irq[i]  = ints[j];
 118                         j++; argc--;
 119                 }
 120
 121                 i++;
 122         }
 123         return(1);
 124 }
 125 __setup("pcbit=", pcbit_setup);
 126 #endif
 127
 128 module_init(pcbit_init);
 129 module_exit(pcbit_exit);
 130