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 <linux/seq_file.h>
  19 #include <net/net_namespace.h>
  20
  21 #include "platform.h"
  22 #include "di_defs.h"
  23 #include "dadapter.h"
  24 #include "divasync.h"
  25 #include "did_vers.h"
  26
  27 static char *main_revision = "$Revision: 1.13.6.4 $";
  28
  29 static char *DRIVERNAME =
  30     "Eicon DIVA - DIDD table (http://www.melware.net)";
  31 static char *DRIVERLNAME = "divadidd";
  32 char *DRIVERRELEASE_DIDD = "2.0";
  33
  34 MODULE_DESCRIPTION("DIDD table driver for diva drivers");
  35 MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
  36 MODULE_SUPPORTED_DEVICE("Eicon diva drivers");
  37 MODULE_LICENSE("GPL");
  38
  39 #define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
  40 #define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)
  41
  42 extern int diddfunc_init(void);
  43 extern void diddfunc_finit(void);
  44
  45 extern void DIVA_DIDD_Read(void *, int);
  46
  47 static struct proc_dir_entry *proc_didd;
  48 struct proc_dir_entry *proc_net_eicon = NULL;
  49
  50 EXPORT_SYMBOL(DIVA_DIDD_Read);
  51 EXPORT_SYMBOL(proc_net_eicon);
  52
  53 static char *getrev(const char *revision)
  54 {
  55         char *rev;
  56         char *p;
  57         if ((p = strchr(revision, ':'))) {
  58                 rev = p + 2;
  59                 p = strchr(rev, '$');
  60                 *--p = 0;
  61         } else
  62                 rev = "1.0";
  63         return rev;
  64 }
  65
  66 static int divadidd_proc_show(struct seq_file *m, void *v)
  67 {
  68         char tmprev[32];
  69
  70         strcpy(tmprev, main_revision);
  71         seq_printf(m, "%s\n", DRIVERNAME);
  72         seq_printf(m, "name     : %s\n", DRIVERLNAME);
  73         seq_printf(m, "release  : %s\n", DRIVERRELEASE_DIDD);
  74         seq_printf(m, "build    : %s(%s)\n",
  75                        diva_didd_common_code_build, DIVA_BUILD);
  76         seq_printf(m, "revision : %s\n", getrev(tmprev));
  77
  78         return 0;
  79 }
  80
  81 static int divadidd_proc_open(struct inode *inode, struct file *file)
  82 {
  83         return single_open(file, divadidd_proc_show, NULL);
  84 }
  85
  86 static const struct file_operations divadidd_proc_fops = {
  87         .owner          = THIS_MODULE,
  88         .open           = divadidd_proc_open,
  89         .read           = seq_read,
  90         .llseek         = seq_lseek,
  91         .release        = single_release,
  92 };
  93
  94 static int DIVA_INIT_FUNCTION create_proc(void)
  95 {
  96         proc_net_eicon = proc_mkdir("eicon", init_net.proc_net);
  97
  98         if (proc_net_eicon) {
  99                 proc_didd = proc_create(DRIVERLNAME, S_IRUGO, proc_net_eicon,
 100                                         &divadidd_proc_fops);
 101                 return (1);
 102         }
 103         return (0);
 104 }
 105
 106 static void remove_proc(void)
 107 {
 108         remove_proc_entry(DRIVERLNAME, proc_net_eicon);
 109         remove_proc_entry("eicon", init_net.proc_net);
 110 }
 111
 112 static int DIVA_INIT_FUNCTION divadidd_init(void)
 113 {
 114         char tmprev[32];
 115         int ret = 0;
 116
 117         printk(KERN_INFO "%s\n", DRIVERNAME);
 118         printk(KERN_INFO "%s: Rel:%s  Rev:", DRIVERLNAME, DRIVERRELEASE_DIDD);
 119         strcpy(tmprev, main_revision);
 120         printk("%s  Build:%s(%s)\n", getrev(tmprev),
 121                diva_didd_common_code_build, DIVA_BUILD);
 122
 123         if (!create_proc()) {
 124                 printk(KERN_ERR "%s: could not create proc entry\n",
 125                        DRIVERLNAME);
 126                 ret = -EIO;
 127                 goto out;
 128         }
 129
 130         if (!diddfunc_init()) {
 131                 printk(KERN_ERR "%s: failed to connect to DIDD.\n",
 132                        DRIVERLNAME);
 133 #ifdef MODULE
 134                 remove_proc();
 135 #endif
 136                 ret = -EIO;
 137                 goto out;
 138         }
 139
 140       out:
 141         return (ret);
 142 }
 143
 144 static void DIVA_EXIT_FUNCTION divadidd_exit(void)
 145 {
 146         diddfunc_finit();
 147         remove_proc();
 148         printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
 149 }
 150
 151 module_init(divadidd_init);
 152 module_exit(divadidd_exit);