File: /usr/src/linux/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 General Public License, incorporated herein by reference.
8 */
9
10 /*
11 * PCBIT-D module support
12 */
13
14 #include <linux/module.h>
15 #include <linux/init.h>
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, };
30
31 extern void pcbit_terminate(int board);
32 extern int pcbit_init_dev(int board, int mem_base, int irq);
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 int board;
83
84 for (board = 0; board < num_boards; board++)
85 pcbit_terminate(board);
86 printk(KERN_NOTICE
87 "PCBIT-D module unloaded\n");
88 }
89
90 #ifndef MODULE
91 #define MAX_PARA (MAX_PCBIT_CARDS * 2)
92 static int __init pcbit_setup(char *line)
93 {
94 int i, j, argc;
95 char *str;
96 int ints[MAX_PARA+1];
97
98 str = get_options(line, MAX_PARA, ints);
99 argc = ints[0];
100 i = 0;
101 j = 1;
102
103 while (argc && (i<MAX_PCBIT_CARDS)) {
104
105 if (argc) {
106 mem[i] = ints[j];
107 j++; argc--;
108 }
109
110 if (argc) {
111 irq[i] = ints[j];
112 j++; argc--;
113 }
114
115 i++;
116 }
117 return(1);
118 }
119 __setup("pcbit=", pcbit_setup);
120 #endif
121
122 MODULE_PARM(mem, "1-" __MODULE_STRING(MAX_PCBIT_CARDS) "i");
123 MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_PCBIT_CARDS) "i");
124
125 module_init(pcbit_init);
126 module_exit(pcbit_exit);
127
128