sys/net/i4b/driver/i4b_ctl.c

   1 /*
   2  * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  *
  25  *---------------------------------------------------------------------------
  26  *
  27  *      i4b_ctl.c - i4b system control port driver
  28  *      ------------------------------------------
  29  *
  30  *      $Id: i4b_ctl.c,v 1.37 2000/05/31 08:04:43 hm Exp $
  31  *
  32  * $FreeBSD: src/sys/i4b/driver/i4b_ctl.c,v 1.10.2.3 2001/08/12 16:22:48 hm Exp $
  33  * $DragonFly: src/sys/net/i4b/driver/i4b_ctl.c,v 1.11 2005/06/14 21:19:18 joerg Exp $
  34  *
  35  *      last edit-date: [Sat Aug 11 18:06:38 2001]
  36  *
  37  *---------------------------------------------------------------------------*/
  38
  39 #include "use_i4bctl.h"
  40
  41 #if NI4BCTL > 1
  42 #error "only 1 (one) i4bctl device allowed!"
  43 #endif
  44
  45 #if NI4BCTL > 0
  46
  47 #include <sys/param.h>
  48
  49 #include <sys/ioccom.h>
  50
  51 #include <sys/kernel.h>
  52 #include <sys/systm.h>
  53 #include <sys/conf.h>
  54 #include <sys/socket.h>
  55 #include <net/if.h>
  56
  57 #include <net/i4b/include/machine/i4b_debug.h>
  58 #include <net/i4b/include/machine/i4b_ioctl.h>
  59
  60 #include "../include/i4b_global.h"
  61 #include "../include/i4b_l3l4.h"
  62 #include "../layer2/i4b_l2.h"
  63
  64 static int openflag = 0;
  65
  66 static  d_open_t        i4bctlopen;
  67 static  d_close_t       i4bctlclose;
  68 static  d_ioctl_t       i4bctlioctl;
  69
  70 static d_poll_t         i4bctlpoll;
  71 #define POLLFIELD       i4bctlpoll
  72
  73 #define CDEV_MAJOR 55
  74
  75 static struct cdevsw i4bctl_cdevsw = {
  76         /* name */      "i4bctl",
  77         /* maj */       CDEV_MAJOR,
  78         /* flags */     0,
  79         /* port */      NULL,
  80         /* clone */     NULL,
  81
  82         /* open */      i4bctlopen,
  83         /* close */     i4bctlclose,
  84         /* read */      noread,
  85         /* write */     nowrite,
  86         /* ioctl */     i4bctlioctl,
  87         /* poll */      POLLFIELD,
  88         /* mmap */      nommap,
  89         /* strategy */  nostrategy,
  90         /* dump */      nodump,
  91         /* psize */     nopsize
  92 };
  93
  94 static void i4bctlattach(void *);
  95 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
  96
  97 #define PDEVSTATIC      static
  98
  99 /*---------------------------------------------------------------------------*
 100  *      initialization at kernel load time
 101  *---------------------------------------------------------------------------*/
 102 static void
 103 i4bctlinit(void *unused)
 104 {
 105         cdevsw_add(&i4bctl_cdevsw, 0, 0);
 106 }
 107
 108 SYSINIT(i4bctldev, SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, &i4bctlinit, NULL);
 109
 110 /*---------------------------------------------------------------------------*
 111  *      interface attach routine
 112  *---------------------------------------------------------------------------*/
 113 PDEVSTATIC void
 114 i4bctlattach(void *dummy)
 115 {
 116 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
 117         printf("i4bctl: ISDN system control port attached\n");
 118 #endif
 119 }
 120
 121 /*---------------------------------------------------------------------------*
 122  *      i4bctlopen - device driver open routine
 123  *---------------------------------------------------------------------------*/
 124 PDEVSTATIC int
 125 i4bctlopen(dev_t dev, int flag, int fmt, struct thread *td)
 126 {
 127         if(minor(dev))
 128                 return (ENXIO);
 129
 130         if(openflag)
 131                 return (EBUSY);
 132
 133         openflag = 1;
 134
 135         return (0);
 136 }
 137
 138 /*---------------------------------------------------------------------------*
 139  *      i4bctlclose - device driver close routine
 140  *---------------------------------------------------------------------------*/
 141 PDEVSTATIC int
 142 i4bctlclose(dev_t dev, int flag, int fmt, struct thread *td)
 143 {
 144         openflag = 0;
 145         return (0);
 146 }
 147
 148 /*---------------------------------------------------------------------------*
 149  *      i4bctlioctl - device driver ioctl routine
 150  *---------------------------------------------------------------------------*/
 151 PDEVSTATIC int
 152 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
 153 {
 154 #if DO_I4B_DEBUG
 155         ctl_debug_t *cdbg;
 156         int error = 0;
 157 #endif
 158
 159 #if !DO_I4B_DEBUG
 160        return(ENODEV);
 161 #else
 162         if(minor(dev))
 163                 return(ENODEV);
 164
 165         switch(cmd)
 166         {
 167                 case I4B_CTL_GET_DEBUG:
 168                         cdbg = (ctl_debug_t *)data;
 169                         cdbg->l1 = i4b_l1_debug;
 170                         cdbg->l2 = i4b_l2_debug;
 171                         cdbg->l3 = i4b_l3_debug;
 172                         cdbg->l4 = i4b_l4_debug;
 173                         break;
 174
 175                 case I4B_CTL_SET_DEBUG:
 176                         cdbg = (ctl_debug_t *)data;
 177                         i4b_l1_debug = cdbg->l1;
 178                         i4b_l2_debug = cdbg->l2;
 179                         i4b_l3_debug = cdbg->l3;
 180                         i4b_l4_debug = cdbg->l4;
 181                         break;
 182
 183                 case I4B_CTL_GET_CHIPSTAT:
 184                 {
 185                         struct chipstat *cst;
 186                         cst = (struct chipstat *)data;
 187                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_GCST, cst);
 188                         break;
 189                 }
 190
 191                 case I4B_CTL_CLR_CHIPSTAT:
 192                 {
 193                         struct chipstat *cst;
 194                         cst = (struct chipstat *)data;
 195                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_CCST, cst);
 196                         break;
 197                 }
 198
 199                 case I4B_CTL_GET_LAPDSTAT:
 200                 {
 201                         l2stat_t *l2s;
 202                         l2_softc_t *sc;
 203                         l2s = (l2stat_t *)data;
 204
 205                         if( l2s->unit < 0 || l2s->unit > MAXL1UNITS)
 206                         {
 207                                 error = EINVAL;
 208                                 break;
 209                         }
 210
 211                         sc = &l2_softc[l2s->unit];
 212
 213                         bcopy(&sc->stat, &l2s->lapdstat, sizeof(lapdstat_t));
 214                         break;
 215                 }
 216
 217                 case I4B_CTL_CLR_LAPDSTAT:
 218                 {
 219                         int *up;
 220                         l2_softc_t *sc;
 221                         up = (int *)data;
 222
 223                         if( *up < 0 || *up > MAXL1UNITS)
 224                         {
 225                                 error = EINVAL;
 226                                 break;
 227                         }
 228
 229                         sc = &l2_softc[*up];
 230
 231                         bzero(&sc->stat, sizeof(lapdstat_t));
 232                         break;
 233                 }
 234
 235                 default:
 236                         error = ENOTTY;
 237                         break;
 238         }
 239         return(error);
 240 #endif /* DO_I4B_DEBUG */
 241 }
 242
 243 /*---------------------------------------------------------------------------*
 244  *      i4bctlpoll - device driver poll routine
 245  *---------------------------------------------------------------------------*/
 246 static int
 247 i4bctlpoll (dev_t dev, int events, struct thread *td)
 248 {
 249         return (ENODEV);
 250 }
 251
 252 #endif /* NI4BCTL > 0 */