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/module.h>
  15 #include <linux/init.h>
  16 #include <linux/kernel.h>
  17 #include <linux/proc_fs.h>
  18 #include <net/net_namespace.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 $";
  27
  28 static char *DRIVERNAME =
  29     "Eicon DIVA - DIDD table (http://www.melware.net)";
  30 static char *DRIVERLNAME = "divadidd";
  31 char *DRIVERRELEASE_DIDD = "2.0";
  32
  33 MODULE_DESCRIPTION("DIDD table driver for diva drivers");
  34 MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
  35 MODULE_SUPPORTED_DEVICE("Eicon diva drivers");
  36 MODULE_LICENSE("GPL");
  37
  38 #define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
  39 #define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)
  40
  41 extern int diddfunc_init(void);
  42 extern void diddfunc_finit(void);
  43
  44 extern void DIVA_DIDD_Read(void *, int);
  45
  46 static struct proc_dir_entry *proc_didd;
  47 struct proc_dir_entry *proc_net_eicon = NULL;
  48
  49 EXPORT_SYMBOL(DIVA_DIDD_Read);
  50 EXPORT_SYMBOL(proc_net_eicon);
  51
  52 static char *getrev(const char *revision)
  53 {
  54         char *rev;
  55         char *p;
  56         if ((p = strchr(revision, ':'))) {
  57                 rev = p + 2;
  58                 p = strchr(rev, '$');
  59                 *--p = 0;
  60         } else
  61                 rev = "1.0";
  62         return rev;
  63 }
  64
  65 static int
  66 proc_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
  88 static int DIVA_INIT_FUNCTION create_proc(void)
  89 {
  90         proc_net_eicon = proc_mkdir("eicon", init_net.proc_net);
  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
 103 static void remove_proc(void)
 104 {
 105         remove_proc_entry(DRIVERLNAME, proc_net_eicon);
 106         remove_proc_entry("eicon", init_net.proc_net);
 107 }
 108
 109 static 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
 141 static 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
 148 module_init(divadidd_init);
 149 module_exit(divadidd_exit);