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  *
  34  *      last edit-date: [Sat Aug 11 18:06:38 2001]
  35  *
  36  *---------------------------------------------------------------------------*/
  37
  38 #include "use_i4bctl.h"
  39
  40 #if NI4BCTL > 1
  41 #error "only 1 (one) i4bctl device allowed!"
  42 #endif
  43
  44 #if NI4BCTL > 0
  45
  46 #include <sys/param.h>
  47
  48 #include <sys/kernel.h>
  49 #include <sys/systm.h>
  50 #include <sys/conf.h>
  51 #include <sys/device.h>
  52 #include <sys/socket.h>
  53 #include <net/if.h>
  54
  55 #include <net/i4b/include/machine/i4b_debug.h>
  56 #include <net/i4b/include/machine/i4b_ioctl.h>
  57
  58 #include "../include/i4b_global.h"
  59 #include "../include/i4b_l3l4.h"
  60 #include "../layer2/i4b_l2.h"
  61
  62 static int openflag = 0;
  63
  64 static  d_open_t        i4bctlopen;
  65 static  d_close_t       i4bctlclose;
  66 static  d_ioctl_t       i4bctlioctl;
  67
  68 static struct dev_ops i4bctl_ops = {
  69         { "i4bctl", 0, 0 },
  70         .d_open =      i4bctlopen,
  71         .d_close =     i4bctlclose,
  72         .d_ioctl =     i4bctlioctl,
  73 };
  74
  75 static void i4bctlattach(void *);
  76 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
  77
  78 #define PDEVSTATIC      static
  79
  80 /*---------------------------------------------------------------------------*
  81  *      interface attach routine
  82  *---------------------------------------------------------------------------*/
  83 PDEVSTATIC void
  84 i4bctlattach(void *dummy)
  85 {
  86 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
  87         kprintf("i4bctl: ISDN system control port attached\n");
  88 #endif
  89 }
  90
  91 /*---------------------------------------------------------------------------*
  92  *      i4bctlopen - device driver open routine
  93  *---------------------------------------------------------------------------*/
  94 PDEVSTATIC int
  95 i4bctlopen(struct dev_open_args *ap)
  96 {
  97         cdev_t dev = ap->a_head.a_dev;
  98         if(minor(dev))
  99                 return (ENXIO);
 100         if(openflag)
 101                 return (EBUSY);
 102         openflag = 1;
 103         return (0);
 104 }
 105
 106 /*---------------------------------------------------------------------------*
 107  *      i4bctlclose - device driver close routine
 108  *---------------------------------------------------------------------------*/
 109 PDEVSTATIC int
 110 i4bctlclose(struct dev_close_args *ap)
 111 {
 112         openflag = 0;
 113         return (0);
 114 }
 115
 116 /*---------------------------------------------------------------------------*
 117  *      i4bctlioctl - device driver ioctl routine
 118  *---------------------------------------------------------------------------*/
 119 PDEVSTATIC int
 120 i4bctlioctl(struct dev_ioctl_args *ap)
 121 {
 122         cdev_t dev = ap->a_head.a_dev;
 123 #if DO_I4B_DEBUG
 124         ctl_debug_t *cdbg;
 125         int error = 0;
 126 #endif
 127
 128 #if !DO_I4B_DEBUG
 129        return(ENODEV);
 130 #else
 131         if(minor(dev))
 132                 return(ENODEV);
 133
 134         switch(ap->a_cmd)
 135         {
 136                 case I4B_CTL_GET_DEBUG:
 137                         cdbg = (ctl_debug_t *)ap->a_data;
 138                         cdbg->l1 = i4b_l1_debug;
 139                         cdbg->l2 = i4b_l2_debug;
 140                         cdbg->l3 = i4b_l3_debug;
 141                         cdbg->l4 = i4b_l4_debug;
 142                         break;
 143
 144                 case I4B_CTL_SET_DEBUG:
 145                         cdbg = (ctl_debug_t *)ap->a_data;
 146                         i4b_l1_debug = cdbg->l1;
 147                         i4b_l2_debug = cdbg->l2;
 148                         i4b_l3_debug = cdbg->l3;
 149                         i4b_l4_debug = cdbg->l4;
 150                         break;
 151
 152                 case I4B_CTL_GET_CHIPSTAT:
 153                 {
 154                         struct chipstat *cst;
 155                         cst = (struct chipstat *)ap->a_data;
 156                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_GCST, cst);
 157                         break;
 158                 }
 159
 160                 case I4B_CTL_CLR_CHIPSTAT:
 161                 {
 162                         struct chipstat *cst;
 163                         cst = (struct chipstat *)ap->a_data;
 164                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_CCST, cst);
 165                         break;
 166                 }
 167
 168                 case I4B_CTL_GET_LAPDSTAT:
 169                 {
 170                         l2stat_t *l2s;
 171                         l2_softc_t *sc;
 172                         l2s = (l2stat_t *)ap->a_data;
 173
 174                         if( l2s->unit < 0 || l2s->unit > MAXL1UNITS)
 175                         {
 176                                 error = EINVAL;
 177                                 break;
 178                         }
 179
 180                         sc = &l2_softc[l2s->unit];
 181
 182                         bcopy(&sc->stat, &l2s->lapdstat, sizeof(lapdstat_t));
 183                         break;
 184                 }
 185
 186                 case I4B_CTL_CLR_LAPDSTAT:
 187                 {
 188                         int *up;
 189                         l2_softc_t *sc;
 190                         up = (int *)ap->a_data;
 191
 192                         if( *up < 0 || *up > MAXL1UNITS)
 193                         {
 194                                 error = EINVAL;
 195                                 break;
 196                         }
 197
 198                         sc = &l2_softc[*up];
 199
 200                         bzero(&sc->stat, sizeof(lapdstat_t));
 201                         break;
 202                 }
 203
 204                 default:
 205                         error = ENOTTY;
 206                         break;
 207         }
 208         return(error);
 209 #endif /* DO_I4B_DEBUG */
 210 }
 211
 212 #endif /* NI4BCTL > 0 */