diva_didd.c revision 666002218d59db271e5c1ede1d80227170c51987 
1/* $Id: diva_didd.c,v 1.13.6.4 2005/02/11 19:40:25 armin Exp $
2 *
3 * DIDD Interface module for Eicon active cards.
4 *
5 * Functions are in dadapter.c
6 *
7 * Copyright 2002-2003 by Armin Schindler (mac@melware.de)
8 * Copyright 2002-2003 Cytronics & Melware (info@melware.de)
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 */
13
14#include <linux/config.h>
15#include <linux/module.h>
16#include <linux/init.h>
17#include <linux/kernel.h>
18#include <linux/proc_fs.h>
19
20#include "platform.h"
21#include "di_defs.h"
22#include "dadapter.h"
23#include "divasync.h"
24#include "did_vers.h"
25
26static char *main_revision = "$Revision: 1.13.6.4 $";
27
28static char *DRIVERNAME =
29    "Eicon DIVA - DIDD table (http://www.melware.net)";
30static char *DRIVERLNAME = "divadidd";
31char *DRIVERRELEASE_DIDD = "2.0";
32
33MODULE_DESCRIPTION("DIDD table driver for diva drivers");
34MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
35MODULE_SUPPORTED_DEVICE("Eicon diva drivers");
36MODULE_LICENSE("GPL");
37
38#define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
39#define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)
40
41extern int diddfunc_init(void);
42extern void diddfunc_finit(void);
43
44extern void DIVA_DIDD_Read(void *, int);
45
46static struct proc_dir_entry *proc_didd;
47struct proc_dir_entry *proc_net_eicon = NULL;
48
49EXPORT_SYMBOL(DIVA_DIDD_Read);
50EXPORT_SYMBOL(proc_net_eicon);
51
52static char *getrev(const char *revision)
53{
54	char *rev;
55	char *p;
56	if ((p = strchr(revision, ':'))) {
57		rev = p + 2;
58		p = strchr(rev, '$');
59		*--p = 0;
60	} else
61		rev = "1.0";
62	return rev;
63}
64
65static int
66proc_read(char *page, char **start, off_t off, int count, int *eof,
67	  void *data)
68{
69	int len = 0;
70	char tmprev[32];
71
72	strcpy(tmprev, main_revision);
73	len += sprintf(page + len, "%s\n", DRIVERNAME);
74	len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
75	len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_DIDD);
76	len += sprintf(page + len, "build    : %s(%s)\n",
77		       diva_didd_common_code_build, DIVA_BUILD);
78	len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
79
80	if (off + count >= len)
81		*eof = 1;
82	if (len < off)
83		return 0;
84	*start = page + off;
85	return ((count < len - off) ? count : len - off);
86}
87
88static int DIVA_INIT_FUNCTION create_proc(void)
89{
90	proc_net_eicon = proc_mkdir("net/eicon", NULL);
91
92	if (proc_net_eicon) {
93		if ((proc_didd =
94		     create_proc_entry(DRIVERLNAME, S_IFREG | S_IRUGO,
95				       proc_net_eicon))) {
96			proc_didd->read_proc = proc_read;
97		}
98		return (1);
99	}
100	return (0);
101}
102
103static void DIVA_EXIT_FUNCTION remove_proc(void)
104{
105	remove_proc_entry(DRIVERLNAME, proc_net_eicon);
106	remove_proc_entry("net/eicon", NULL);
107}
108
109static int DIVA_INIT_FUNCTION divadidd_init(void)
110{
111	char tmprev[32];
112	int ret = 0;
113
114	printk(KERN_INFO "%s\n", DRIVERNAME);
115	printk(KERN_INFO "%s: Rel:%s  Rev:", DRIVERLNAME, DRIVERRELEASE_DIDD);
116	strcpy(tmprev, main_revision);
117	printk("%s  Build:%s(%s)\n", getrev(tmprev),
118	       diva_didd_common_code_build, DIVA_BUILD);
119
120	if (!create_proc()) {
121		printk(KERN_ERR "%s: could not create proc entry\n",
122		       DRIVERLNAME);
123		ret = -EIO;
124		goto out;
125	}
126
127	if (!diddfunc_init()) {
128		printk(KERN_ERR "%s: failed to connect to DIDD.\n",
129		       DRIVERLNAME);
130#ifdef MODULE
131		remove_proc();
132#endif
133		ret = -EIO;
134		goto out;
135	}
136
137      out:
138	return (ret);
139}
140
141static void DIVA_EXIT_FUNCTION divadidd_exit(void)
142{
143	diddfunc_finit();
144	remove_proc();
145	printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
146}
147
148module_init(divadidd_init);
149module_exit(divadidd_exit);
150