drivers/isdn/hardware/eicon/diva_didd.c

   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
  26 static char *main_revision = "$Revision: 1.13.6.4 $";
  27
  28 static char *DRIVERNAME =
  29     "Eicon DIVA - DIDD table (http://www.melware.net)";
  30 static char *DRIVERLNAME = "divadidd";
  31 char *DRIVERRELEASE_DIDD = "2.0";
  32
  33 static char *main_proc_dir = "eicon";
  34
  35 MODULE_DESCRIPTION("DIDD table driver for diva drivers");
  36 MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
  37 MODULE_SUPPORTED_DEVICE("Eicon diva drivers");
  38 MODULE_LICENSE("GPL");
  39
  40 #define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
  41 #define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)
  42
  43 extern int diddfunc_init(void);
  44 extern void diddfunc_finit(void);
  45
  46 extern void DIVA_DIDD_Read(void *, int);
  47
  48 static struct proc_dir_entry *proc_didd;
  49 struct proc_dir_entry *proc_net_eicon = NULL;
  50
  51 EXPORT_SYMBOL(DIVA_DIDD_Read);
  52 EXPORT_SYMBOL(proc_net_eicon);
  53
  54 static char *getrev(const char *revision)
  55 {
  56         char *rev;
  57         char *p;
  58         if ((p = strchr(revision, ':'))) {
  59                 rev = p + 2;
  60                 p = strchr(rev, '$');
  61                 *--p = 0;
  62         } else
  63                 rev = "1.0";
  64         return rev;
  65 }
  66
  67 static int
  68 proc_read(char *page, char **start, off_t off, int count, int *eof,
  69           void *data)
  70 {
  71         int len = 0;
  72         char tmprev[32];
  73
  74         strcpy(tmprev, main_revision);
  75         len += sprintf(page + len, "%s\n", DRIVERNAME);
  76         len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
  77         len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_DIDD);
  78         len += sprintf(page + len, "build    : %s(%s)\n",
  79                        diva_didd_common_code_build, DIVA_BUILD);
  80         len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
  81
  82         if (off + count >= len)
  83                 *eof = 1;
  84         if (len < off)
  85                 return 0;
  86         *start = page + off;
  87         return ((count < len - off) ? count : len - off);
  88 }
  89
  90 static int DIVA_INIT_FUNCTION create_proc(void)
  91 {
  92         proc_net_eicon = create_proc_entry(main_proc_dir, S_IFDIR, proc_net);
  93
  94         if (proc_net_eicon) {
  95                 if ((proc_didd =
  96                      create_proc_entry(DRIVERLNAME, S_IFREG | S_IRUGO,
  97                                        proc_net_eicon))) {
  98                         proc_didd->read_proc = proc_read;
  99                 }
 100                 return (1);
 101         }
 102         return (0);
 103 }
 104
 105 static void DIVA_EXIT_FUNCTION remove_proc(void)
 106 {
 107         remove_proc_entry(DRIVERLNAME, proc_net_eicon);
 108         remove_proc_entry(main_proc_dir, proc_net);
 109 }
 110
 111 static int DIVA_INIT_FUNCTION divadidd_init(void)
 112 {
 113         char tmprev[32];
 114         int ret = 0;
 115
 116         printk(KERN_INFO "%s\n", DRIVERNAME);
 117         printk(KERN_INFO "%s: Rel:%s  Rev:", DRIVERLNAME, DRIVERRELEASE_DIDD);
 118         strcpy(tmprev, main_revision);
 119         printk("%s  Build:%s(%s)\n", getrev(tmprev),
 120                diva_didd_common_code_build, DIVA_BUILD);
 121
 122         if (!create_proc()) {
 123                 printk(KERN_ERR "%s: could not create proc entry\n",
 124                        DRIVERLNAME);
 125                 ret = -EIO;
 126                 goto out;
 127         }
 128
 129         if (!diddfunc_init()) {
 130                 printk(KERN_ERR "%s: failed to connect to DIDD.\n",
 131                        DRIVERLNAME);
 132 #ifdef MODULE
 133                 remove_proc();
 134 #endif
 135                 ret = -EIO;
 136                 goto out;
 137         }
 138
 139       out:
 140         return (ret);
 141 }
 142
 143 static void DIVA_EXIT_FUNCTION divadidd_exit(void)
 144 {
 145         diddfunc_finit();
 146         remove_proc();
 147         printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
 148 }
 149
 150 module_init(divadidd_init);
 151 module_exit(divadidd_exit);