drivers/isdn/pcbit/module.c

   1 /*
   2  * Copyright (C) 1996 Universidade de Lisboa
   3  *
   4  * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
   5  *
   6  * This software may be used and distributed according to the terms of
   7  * the GNU Public License, incorporated herein by reference.
   8  */
   9
  10 /*
  11  *        PCBIT-D module support
  12  */
  13
  14 #include <linux/module.h>
  15
  16 #include <linux/sched.h>
  17 #include <linux/string.h>
  18 #include <linux/kernel.h>
  19 #include <linux/tqueue.h>
  20 #include <linux/skbuff.h>
  21
  22 #include <linux/isdnif.h>
  23 #include "pcbit.h"
  24
  25 static int mem[MAX_PCBIT_CARDS] = {0, };
  26 static int irq[MAX_PCBIT_CARDS] = {0, };
  27
  28 static int num_boards;
  29 struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS] = {0, 0, 0, 0};
  30
  31 int init_module(void);
  32 void cleanup_module(void);
  33
  34 extern void pcbit_terminate(int board);
  35 extern int pcbit_init_dev(int board, int mem_base, int irq);
  36
  37 #ifdef MODULE
  38 MODULE_PARM(mem, "1-" __MODULE_STRING(MAX_PCBIT_CARDS) "i");
  39 MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_PCBIT_CARDS) "i");
  40 #define pcbit_init init_module
  41 #endif
  42
  43 int pcbit_init(void)
  44 {
  45         int board;
  46
  47         num_boards = 0;
  48
  49         printk(KERN_INFO
  50                "PCBIT-D device driver v 0.5 - "
  51                "Copyright (C) 1996 Universidade de Lisboa\n");
  52
  53         if (mem[0] || irq[0])
  54         {
  55                 for (board=0; board < MAX_PCBIT_CARDS && mem[board] && irq[board]; board++)
  56                 {
  57                         if (!mem[board])
  58                                 mem[board] = 0xD0000;
  59                         if (!irq[board])
  60                                 irq[board] = 5;
  61
  62                         if (pcbit_init_dev(board, mem[board], irq[board]) == 0)
  63                                 num_boards++;
  64
  65                         else
  66                         {
  67                                 printk(KERN_WARNING
  68                                        "pcbit_init failed for dev %d",
  69                                        board + 1);
  70                                 return -EIO;
  71                         }
  72                 }
  73         }
  74
  75         /* Hardcoded default settings detection */
  76
  77         if (!num_boards)
  78         {
  79                 printk(KERN_INFO
  80                        "Trying to detect board using default settings\n");
  81                 if (pcbit_init_dev(0, 0xD0000, 5) == 0)
  82                         num_boards++;
  83                 else
  84                         return -EIO;
  85         }
  86
  87         /* No symbols to export, hide all symbols */
  88         EXPORT_NO_SYMBOLS;
  89
  90         return 0;
  91 }
  92
  93 #ifdef MODULE
  94 void cleanup_module(void)
  95 {
  96         int board;
  97
  98         for (board = 0; board < num_boards; board++)
  99                 pcbit_terminate(board);
 100         printk(KERN_INFO
 101                "PCBIT-D module unloaded\n");
 102 }
 103
 104 #else
 105 #ifdef COMPAT_HAS_NEW_SETUP
 106 #define MAX_PARA        (MAX_PCBIT_CARDS * 2)
 107 #include <linux/init.h>
 108 static int __init pcbit_setup(char *line)
 109 {
 110         int i, j, argc;
 111         char *str;
 112         int ints[MAX_PARA+1];
 113
 114         str = get_options(line, MAX_PARA, ints);
 115 #else
 116 void pcbit_setup(char *str, int *ints)
 117 {
 118         int i, j, argc;
 119 #endif
 120         argc = ints[0];
 121         i = 0;
 122         j = 1;
 123
 124         while (argc && (i<MAX_PCBIT_CARDS)) {
 125
 126                 if (argc) {
 127                         mem[i]  = ints[j];
 128                         j++; argc--;
 129                 }
 130
 131                 if (argc) {
 132                         irq[i]  = ints[j];
 133                         j++; argc--;
 134                 }
 135
 136                 i++;
 137         }
 138 #ifdef COMPAT_HAS_NEW_SETUP
 139         return(1);
 140 }
 141 __setup("pcbit=", pcbit_setup);
 142 #else
 143 }
 144 #endif
 145 #endif
 146
 147
 148