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 1.14 2006/12/22 23:44:55 swildner 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/kernel.h>
  50 #include <sys/systm.h>
  51 #include <sys/conf.h>
  52 #include <sys/device.h>
  53 #include <sys/socket.h>
  54 #include <net/if.h>
  55
  56 #include <net/i4b/include/machine/i4b_debug.h>
  57 #include <net/i4b/include/machine/i4b_ioctl.h>
  58
  59 #include "../include/i4b_global.h"
  60 #include "../include/i4b_l3l4.h"
  61 #include "../layer2/i4b_l2.h"
  62
  63 static int openflag = 0;
  64
  65 static  d_open_t        i4bctlopen;
  66 static  d_close_t       i4bctlclose;
  67 static  d_ioctl_t       i4bctlioctl;
  68
  69 static d_poll_t         i4bctlpoll;
  70 #define POLLFIELD       i4bctlpoll
  71
  72 #define CDEV_MAJOR 55
  73
  74 static struct dev_ops i4bctl_ops = {
  75         { "i4bctl", CDEV_MAJOR, 0 },
  76         .d_open =      i4bctlopen,
  77         .d_close =     i4bctlclose,
  78         .d_ioctl =     i4bctlioctl,
  79         .d_poll =      POLLFIELD,
  80 };
  81
  82 static void i4bctlattach(void *);
  83 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
  84
  85 #define PDEVSTATIC      static
  86
  87 /*---------------------------------------------------------------------------*
  88  *      interface attach routine
  89  *---------------------------------------------------------------------------*/
  90 PDEVSTATIC void
  91 i4bctlattach(void *dummy)
  92 {
  93 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
  94         kprintf("i4bctl: ISDN system control port attached\n");
  95 #endif
  96 }
  97
  98 /*---------------------------------------------------------------------------*
  99  *      i4bctlopen - device driver open routine
 100  *---------------------------------------------------------------------------*/
 101 PDEVSTATIC int
 102 i4bctlopen(struct dev_open_args *ap)
 103 {
 104         cdev_t dev = ap->a_head.a_dev;
 105         if(minor(dev))
 106                 return (ENXIO);
 107         if(openflag)
 108                 return (EBUSY);
 109         openflag = 1;
 110         return (0);
 111 }
 112
 113 /*---------------------------------------------------------------------------*
 114  *      i4bctlclose - device driver close routine
 115  *---------------------------------------------------------------------------*/
 116 PDEVSTATIC int
 117 i4bctlclose(struct dev_close_args *ap)
 118 {
 119         openflag = 0;
 120         return (0);
 121 }
 122
 123 /*---------------------------------------------------------------------------*
 124  *      i4bctlioctl - device driver ioctl routine
 125  *---------------------------------------------------------------------------*/
 126 PDEVSTATIC int
 127 i4bctlioctl(struct dev_ioctl_args *ap)
 128 {
 129         cdev_t dev = ap->a_head.a_dev;
 130 #if DO_I4B_DEBUG
 131         ctl_debug_t *cdbg;
 132         int error = 0;
 133 #endif
 134
 135 #if !DO_I4B_DEBUG
 136        return(ENODEV);
 137 #else
 138         if(minor(dev))
 139                 return(ENODEV);
 140
 141         switch(ap->a_cmd)
 142         {
 143                 case I4B_CTL_GET_DEBUG:
 144                         cdbg = (ctl_debug_t *)ap->a_data;
 145                         cdbg->l1 = i4b_l1_debug;
 146                         cdbg->l2 = i4b_l2_debug;
 147                         cdbg->l3 = i4b_l3_debug;
 148                         cdbg->l4 = i4b_l4_debug;
 149                         break;
 150
 151                 case I4B_CTL_SET_DEBUG:
 152                         cdbg = (ctl_debug_t *)ap->a_data;
 153                         i4b_l1_debug = cdbg->l1;
 154                         i4b_l2_debug = cdbg->l2;
 155                         i4b_l3_debug = cdbg->l3;
 156                         i4b_l4_debug = cdbg->l4;
 157                         break;
 158
 159                 case I4B_CTL_GET_CHIPSTAT:
 160                 {
 161                         struct chipstat *cst;
 162                         cst = (struct chipstat *)ap->a_data;
 163                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_GCST, cst);
 164                         break;
 165                 }
 166
 167                 case I4B_CTL_CLR_CHIPSTAT:
 168                 {
 169                         struct chipstat *cst;
 170                         cst = (struct chipstat *)ap->a_data;
 171                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_CCST, cst);
 172                         break;
 173                 }
 174
 175                 case I4B_CTL_GET_LAPDSTAT:
 176                 {
 177                         l2stat_t *l2s;
 178                         l2_softc_t *sc;
 179                         l2s = (l2stat_t *)ap->a_data;
 180
 181                         if( l2s->unit < 0 || l2s->unit > MAXL1UNITS)
 182                         {
 183                                 error = EINVAL;
 184                                 break;
 185                         }
 186
 187                         sc = &l2_softc[l2s->unit];
 188
 189                         bcopy(&sc->stat, &l2s->lapdstat, sizeof(lapdstat_t));
 190                         break;
 191                 }
 192
 193                 case I4B_CTL_CLR_LAPDSTAT:
 194                 {
 195                         int *up;
 196                         l2_softc_t *sc;
 197                         up = (int *)ap->a_data;
 198
 199                         if( *up < 0 || *up > MAXL1UNITS)
 200                         {
 201                                 error = EINVAL;
 202                                 break;
 203                         }
 204
 205                         sc = &l2_softc[*up];
 206
 207                         bzero(&sc->stat, sizeof(lapdstat_t));
 208                         break;
 209                 }
 210
 211                 default:
 212                         error = ENOTTY;
 213                         break;
 214         }
 215         return(error);
 216 #endif /* DO_I4B_DEBUG */
 217 }
 218
 219 /*---------------------------------------------------------------------------*
 220  *      i4bctlpoll - device driver poll routine
 221  *---------------------------------------------------------------------------*/
 222 static int
 223 i4bctlpoll (struct dev_poll_args *ap)
 224 {
 225         return (ENODEV);
 226 }
 227
 228 #endif /* NI4BCTL > 0 */