release/src-rt-6.x/linux/linux-2.6/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
  19 #include "platform.h"
  20 #include "di_defs.h"
  21 #include "dadapter.h"
  22 #include "divasync.h"
  23 #include "did_vers.h"
  24
  25 static char *main_revision = "$Revision: 1.13.6.4 $";
  26
  27 static char *DRIVERNAME =
  28     "Eicon DIVA - DIDD table (http://www.melware.net)";
  29 static char *DRIVERLNAME = "divadidd";
  30 char *DRIVERRELEASE_DIDD = "2.0";
  31
  32 MODULE_DESCRIPTION("DIDD table driver for diva drivers");
  33 MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
  34 MODULE_SUPPORTED_DEVICE("Eicon diva drivers");
  35 MODULE_LICENSE("GPL");
  36
  37 #define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
  38 #define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)
  39
  40 extern int diddfunc_init(void);
  41 extern void diddfunc_finit(void);
  42
  43 extern void DIVA_DIDD_Read(void *, int);
  44
  45 static struct proc_dir_entry *proc_didd;
  46 struct proc_dir_entry *proc_net_eicon = NULL;
  47
  48 EXPORT_SYMBOL(DIVA_DIDD_Read);
  49 EXPORT_SYMBOL(proc_net_eicon);
  50
  51 static char *getrev(const char *revision)
  52 {
  53         char *rev;
  54         char *p;
  55         if ((p = strchr(revision, ':'))) {
  56                 rev = p + 2;
  57                 p = strchr(rev, '$');
  58                 *--p = 0;
  59         } else
  60                 rev = "1.0";
  61         return rev;
  62 }
  63
  64 static int
  65 proc_read(char *page, char **start, off_t off, int count, int *eof,
  66           void *data)
  67 {
  68         int len = 0;
  69         char tmprev[32];
  70
  71         strcpy(tmprev, main_revision);
  72         len += sprintf(page + len, "%s\n", DRIVERNAME);
  73         len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
  74         len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_DIDD);
  75         len += sprintf(page + len, "build    : %s(%s)\n",
  76                        diva_didd_common_code_build, DIVA_BUILD);
  77         len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
  78
  79         if (off + count >= len)
  80                 *eof = 1;
  81         if (len < off)
  82                 return 0;
  83         *start = page + off;
  84         return ((count < len - off) ? count : len - off);
  85 }
  86
  87 static int DIVA_INIT_FUNCTION create_proc(void)
  88 {
  89         proc_net_eicon = proc_mkdir("net/eicon", NULL);
  90
  91         if (proc_net_eicon) {
  92                 if ((proc_didd =
  93                      create_proc_entry(DRIVERLNAME, S_IFREG | S_IRUGO,
  94                                        proc_net_eicon))) {
  95                         proc_didd->read_proc = proc_read;
  96                 }
  97                 return (1);
  98         }
  99         return (0);
 100 }
 101
 102 static void remove_proc(void)
 103 {
 104         remove_proc_entry(DRIVERLNAME, proc_net_eicon);
 105         remove_proc_entry("net/eicon", NULL);
 106 }
 107
 108 static int DIVA_INIT_FUNCTION divadidd_init(void)
 109 {
 110         char tmprev[32];
 111         int ret = 0;
 112
 113         printk(KERN_INFO "%s\n", DRIVERNAME);
 114         printk(KERN_INFO "%s: Rel:%s  Rev:", DRIVERLNAME, DRIVERRELEASE_DIDD);
 115         strcpy(tmprev, main_revision);
 116         printk("%s  Build:%s(%s)\n", getrev(tmprev),
 117                diva_didd_common_code_build, DIVA_BUILD);
 118
 119         if (!create_proc()) {
 120                 printk(KERN_ERR "%s: could not create proc entry\n",
 121                        DRIVERLNAME);
 122                 ret = -EIO;
 123                 goto out;
 124         }
 125
 126         if (!diddfunc_init()) {
 127                 printk(KERN_ERR "%s: failed to connect to DIDD.\n",
 128                        DRIVERLNAME);
 129 #ifdef MODULE
 130                 remove_proc();
 131 #endif
 132                 ret = -EIO;
 133                 goto out;
 134         }
 135
 136       out:
 137         return (ret);
 138 }
 139
 140 static void DIVA_EXIT_FUNCTION divadidd_exit(void)
 141 {
 142         diddfunc_finit();
 143         remove_proc();
 144         printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
 145 }
 146
 147 module_init(divadidd_init);
 148 module_exit(divadidd_exit);