Linux Kernel  3.7.1
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module.c
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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);
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