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/ioccom.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 dev_ops i4bctl_ops = {
  76         { "i4bctl", CDEV_MAJOR, 0 },
  77         .d_open =      i4bctlopen,
  78         .d_close =     i4bctlclose,
  79         .d_ioctl =     i4bctlioctl,
  80         .d_poll =      POLLFIELD,
  81 };
  82
  83 static void i4bctlattach(void *);
  84 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
  85
  86 #define PDEVSTATIC      static
  87
  88 /*---------------------------------------------------------------------------*
  89  *      initialization at kernel load time
  90  *---------------------------------------------------------------------------*/
  91 static void
  92 i4bctlinit(void *unused)
  93 {
  94         dev_ops_add(&i4bctl_ops, 0, 0);
  95 }
  96
  97 SYSINIT(i4bctldev, SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, &i4bctlinit, NULL);
  98
  99 /*---------------------------------------------------------------------------*
 100  *      interface attach routine
 101  *---------------------------------------------------------------------------*/
 102 PDEVSTATIC void
 103 i4bctlattach(void *dummy)
 104 {
 105 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
 106         kprintf("i4bctl: ISDN system control port attached\n");
 107 #endif
 108 }
 109
 110 /*---------------------------------------------------------------------------*
 111  *      i4bctlopen - device driver open routine
 112  *---------------------------------------------------------------------------*/
 113 PDEVSTATIC int
 114 i4bctlopen(struct dev_open_args *ap)
 115 {
 116         cdev_t dev = ap->a_head.a_dev;
 117         if(minor(dev))
 118                 return (ENXIO);
 119         if(openflag)
 120                 return (EBUSY);
 121         openflag = 1;
 122         return (0);
 123 }
 124
 125 /*---------------------------------------------------------------------------*
 126  *      i4bctlclose - device driver close routine
 127  *---------------------------------------------------------------------------*/
 128 PDEVSTATIC int
 129 i4bctlclose(struct dev_close_args *ap)
 130 {
 131         openflag = 0;
 132         return (0);
 133 }
 134
 135 /*---------------------------------------------------------------------------*
 136  *      i4bctlioctl - device driver ioctl routine
 137  *---------------------------------------------------------------------------*/
 138 PDEVSTATIC int
 139 i4bctlioctl(struct dev_ioctl_args *ap)
 140 {
 141         cdev_t dev = ap->a_head.a_dev;
 142 #if DO_I4B_DEBUG
 143         ctl_debug_t *cdbg;
 144         int error = 0;
 145 #endif
 146
 147 #if !DO_I4B_DEBUG
 148        return(ENODEV);
 149 #else
 150         if(minor(dev))
 151                 return(ENODEV);
 152
 153         switch(ap->a_cmd)
 154         {
 155                 case I4B_CTL_GET_DEBUG:
 156                         cdbg = (ctl_debug_t *)ap->a_data;
 157                         cdbg->l1 = i4b_l1_debug;
 158                         cdbg->l2 = i4b_l2_debug;
 159                         cdbg->l3 = i4b_l3_debug;
 160                         cdbg->l4 = i4b_l4_debug;
 161                         break;
 162
 163                 case I4B_CTL_SET_DEBUG:
 164                         cdbg = (ctl_debug_t *)ap->a_data;
 165                         i4b_l1_debug = cdbg->l1;
 166                         i4b_l2_debug = cdbg->l2;
 167                         i4b_l3_debug = cdbg->l3;
 168                         i4b_l4_debug = cdbg->l4;
 169                         break;
 170
 171                 case I4B_CTL_GET_CHIPSTAT:
 172                 {
 173                         struct chipstat *cst;
 174                         cst = (struct chipstat *)ap->a_data;
 175                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_GCST, cst);
 176                         break;
 177                 }
 178
 179                 case I4B_CTL_CLR_CHIPSTAT:
 180                 {
 181                         struct chipstat *cst;
 182                         cst = (struct chipstat *)ap->a_data;
 183                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_CCST, cst);
 184                         break;
 185                 }
 186
 187                 case I4B_CTL_GET_LAPDSTAT:
 188                 {
 189                         l2stat_t *l2s;
 190                         l2_softc_t *sc;
 191                         l2s = (l2stat_t *)ap->a_data;
 192
 193                         if( l2s->unit < 0 || l2s->unit > MAXL1UNITS)
 194                         {
 195                                 error = EINVAL;
 196                                 break;
 197                         }
 198
 199                         sc = &l2_softc[l2s->unit];
 200
 201                         bcopy(&sc->stat, &l2s->lapdstat, sizeof(lapdstat_t));
 202                         break;
 203                 }
 204
 205                 case I4B_CTL_CLR_LAPDSTAT:
 206                 {
 207                         int *up;
 208                         l2_softc_t *sc;
 209                         up = (int *)ap->a_data;
 210
 211                         if( *up < 0 || *up > MAXL1UNITS)
 212                         {
 213                                 error = EINVAL;
 214                                 break;
 215                         }
 216
 217                         sc = &l2_softc[*up];
 218
 219                         bzero(&sc->stat, sizeof(lapdstat_t));
 220                         break;
 221                 }
 222
 223                 default:
 224                         error = ENOTTY;
 225                         break;
 226         }
 227         return(error);
 228 #endif /* DO_I4B_DEBUG */
 229 }
 230
 231 /*---------------------------------------------------------------------------*
 232  *      i4bctlpoll - device driver poll routine
 233  *---------------------------------------------------------------------------*/
 234 static int
 235 i4bctlpoll (struct dev_poll_args *ap)
 236 {
 237         return (ENODEV);
 238 }
 239
 240 #endif /* NI4BCTL > 0 */