LXR linux/drivers/isdn/hardware/eicon/diva

   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
  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("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
 103static void remove_proc(void)
 104{
 105        remove_proc_entry(DRIVERLNAME, proc_net_eicon);
 106        remove_proc_entry("eicon", init_net.proc_net);
 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