1 /*
2 * PCBIT-D module support
3 *
4 * Copyright (C) 1996 Universidade de Lisboa
5 *
6 * Written by Pedro Roque Marques (pedro_m@yahoo.com)
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/tqueue.h>
18 #include <linux/skbuff.h>
19
20 #include <linux/isdnif.h>
21 #include "pcbit.h"
22
23 MODULE_DESCRIPTION("ISDN4Linux: Driver for PCBIT-T card");
24 MODULE_AUTHOR("Pedro Roque Marques");
25 MODULE_LICENSE("GPL");
26 MODULE_PARM(mem, "1-" __MODULE_STRING(MAX_PCBIT_CARDS) "i");
27 MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_PCBIT_CARDS) "i");
28
29 static int mem[MAX_PCBIT_CARDS] = {0, };
30 static int irq[MAX_PCBIT_CARDS] = {0, };
31
32 static int num_boards;
33 struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS] = {0, };
34
35 extern void pcbit_terminate(int board);
36 extern int pcbit_init_dev(int board, int mem_base, int irq);
37
pcbit_init(void)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
pcbit_exit(void)84 static void __exit pcbit_exit(void)
85 {
86 int board;
87
88 for (board = 0; board < num_boards; board++)
89 pcbit_terminate(board);
90 printk(KERN_NOTICE
91 "PCBIT-D module unloaded\n");
92 }
93
94 #ifndef MODULE
95 #define MAX_PARA (MAX_PCBIT_CARDS * 2)
pcbit_setup(char * line)96 static int __init pcbit_setup(char *line)
97 {
98 int i, j, argc;
99 char *str;
100 int ints[MAX_PARA+1];
101
102 str = get_options(line, MAX_PARA, ints);
103 argc = ints[0];
104 i = 0;
105 j = 1;
106
107 while (argc && (i<MAX_PCBIT_CARDS)) {
108
109 if (argc) {
110 mem[i] = ints[j];
111 j++; argc--;
112 }
113
114 if (argc) {
115 irq[i] = ints[j];
116 j++; argc--;
117 }
118
119 i++;
120 }
121 return(1);
122 }
123 __setup("pcbit=", pcbit_setup);
124 #endif
125
126 module_init(pcbit_init);
127 module_exit(pcbit_exit);
128
129