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 1.2 2003/06/17 04:28:39 dillon Exp $
  34  *
  35  *      last edit-date: [Sat Aug 11 18:06:38 2001]
  36  *
  37  *---------------------------------------------------------------------------*/
  38
  39 #include "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 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
  50 #include <sys/ioccom.h>
  51 #else
  52 #include <sys/ioctl.h>
  53 #endif
  54
  55 #include <sys/kernel.h>
  56 #include <sys/systm.h>
  57 #include <sys/conf.h>
  58 #include <sys/socket.h>
  59 #include <net/if.h>
  60
  61 #ifdef __FreeBSD__
  62
  63 #if defined(__FreeBSD__) && __FreeBSD__ == 3
  64 #include "opt_devfs.h"
  65 #endif
  66
  67 #ifdef DEVFS
  68 #include <sys/devfsext.h>
  69 #endif
  70
  71 #endif /* __FreeBSD__ */
  72
  73 #ifdef __FreeBSD__
  74 #include <machine/i4b_debug.h>
  75 #include <machine/i4b_ioctl.h>
  76 #elif defined(__bsdi__)
  77 #include <i4b/i4b_debug.h>
  78 #include <i4b/i4b_ioctl.h>
  79 #else
  80 #include <machine/bus.h>
  81 #include <sys/device.h>
  82 #include <i4b/i4b_debug.h>
  83 #include <i4b/i4b_ioctl.h>
  84 #endif
  85
  86 #include <i4b/include/i4b_global.h>
  87 #include <i4b/include/i4b_l3l4.h>
  88
  89 #include <i4b/layer2/i4b_l2.h>
  90
  91 static int openflag = 0;
  92
  93 #if BSD > 199306 && defined(__FreeBSD__)
  94 static  d_open_t        i4bctlopen;
  95 static  d_close_t       i4bctlclose;
  96 static  d_ioctl_t       i4bctlioctl;
  97
  98 #ifdef OS_USES_POLL
  99 static d_poll_t         i4bctlpoll;
 100 #define POLLFIELD       i4bctlpoll
 101 #else
 102 #define POLLFIELD       noselect
 103 #endif
 104
 105 #define CDEV_MAJOR 55
 106
 107 #if defined(__FreeBSD__) && __FreeBSD__ >= 4
 108 static struct cdevsw i4bctl_cdevsw = {
 109         /* open */      i4bctlopen,
 110         /* close */     i4bctlclose,
 111         /* read */      noread,
 112         /* write */     nowrite,
 113         /* ioctl */     i4bctlioctl,
 114         /* poll */      POLLFIELD,
 115         /* mmap */      nommap,
 116         /* strategy */  nostrategy,
 117         /* name */      "i4bctl",
 118         /* maj */       CDEV_MAJOR,
 119         /* dump */      nodump,
 120         /* psize */     nopsize,
 121         /* flags */     0,
 122         /* bmaj */      -1
 123 };
 124 #else
 125 static struct cdevsw i4bctl_cdevsw =
 126         { i4bctlopen,   i4bctlclose,    noread,         nowrite,
 127           i4bctlioctl,  nostop,         nullreset,      nodevtotty,
 128           POLLFIELD,    nommap,         NULL,   "i4bctl", NULL, -1 };
 129 #endif
 130
 131 static void i4bctlattach(void *);
 132 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
 133
 134 #define PDEVSTATIC      static
 135 #endif /* __FreeBSD__ */
 136
 137 #if defined(__FreeBSD__) && __FreeBSD__ == 3
 138 #ifdef DEVFS
 139 static void *devfs_token;
 140 #endif
 141 #endif
 142
 143 #ifndef __FreeBSD__
 144 #define PDEVSTATIC      /* */
 145 void i4bctlattach __P((void));
 146 int i4bctlopen __P((dev_t dev, int flag, int fmt, struct proc *p));
 147 int i4bctlclose __P((dev_t dev, int flag, int fmt, struct proc *p));
 148 #ifdef __bsdi__
 149 int i4bctlioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p));
 150 #else
 151 int i4bctlioctl __P((dev_t dev, int cmd, caddr_t data, int flag, struct proc *p));
 152 #endif
 153 #endif  /* !FreeBSD */
 154
 155 #if BSD > 199306 && defined(__FreeBSD__)
 156 /*---------------------------------------------------------------------------*
 157  *      initialization at kernel load time
 158  *---------------------------------------------------------------------------*/
 159 static void
 160 i4bctlinit(void *unused)
 161 {
 162 #if defined(__FreeBSD__) && __FreeBSD__ >= 4
 163         cdevsw_add(&i4bctl_cdevsw);
 164 #else
 165         dev_t dev = makedev(CDEV_MAJOR, 0);
 166         cdevsw_add(&dev, &i4bctl_cdevsw, NULL);
 167 #endif
 168 }
 169
 170 SYSINIT(i4bctldev, SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, &i4bctlinit, NULL);
 171
 172 #endif /* BSD > 199306 && defined(__FreeBSD__) */
 173
 174 #ifdef __bsdi__
 175 int i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux);
 176 void dummy_i4bctlattach(struct device*, struct device *, void *);
 177
 178 #define CDEV_MAJOR 64
 179
 180 static struct cfdriver i4bctlcd =
 181         { NULL, "i4bctl", i4bctlmatch, dummy_i4bctlattach, DV_DULL,
 182           sizeof(struct cfdriver) };
 183 struct devsw i4bctlsw =
 184         { &i4bctlcd,
 185           i4bctlopen,   i4bctlclose,    noread,         nowrite,
 186           i4bctlioctl,  seltrue,        nommap,         nostrat,
 187           nodump,       nopsize,        0,              nostop
 188 };
 189
 190 int
 191 i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux)
 192 {
 193         printf("i4bctlmatch: aux=0x%x\n", aux);
 194         return 1;
 195 }
 196 void
 197 dummy_i4bctlattach(struct device *parent, struct device *self, void *aux)
 198 {
 199         printf("dummy_i4bctlattach: aux=0x%x\n", aux);
 200 }
 201 #endif /* __bsdi__ */
 202 /*---------------------------------------------------------------------------*
 203  *      interface attach routine
 204  *---------------------------------------------------------------------------*/
 205 PDEVSTATIC void
 206 #ifdef __FreeBSD__
 207 i4bctlattach(void *dummy)
 208 #else
 209 i4bctlattach()
 210 #endif
 211 {
 212 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
 213         printf("i4bctl: ISDN system control port attached\n");
 214 #endif
 215
 216 #if defined(__FreeBSD__)
 217 #if __FreeBSD__ == 3
 218
 219 #ifdef DEVFS
 220         devfs_token = devfs_add_devswf(&i4bctl_cdevsw, 0, DV_CHR,
 221                                        UID_ROOT, GID_WHEEL, 0600,
 222                                        "i4bctl");
 223 #endif
 224
 225 #else
 226         make_dev(&i4bctl_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4bctl");
 227 #endif
 228 #endif
 229 }
 230
 231 /*---------------------------------------------------------------------------*
 232  *      i4bctlopen - device driver open routine
 233  *---------------------------------------------------------------------------*/
 234 PDEVSTATIC int
 235 i4bctlopen(dev_t dev, int flag, int fmt, struct proc *p)
 236 {
 237         if(minor(dev))
 238                 return (ENXIO);
 239
 240         if(openflag)
 241                 return (EBUSY);
 242
 243         openflag = 1;
 244
 245         return (0);
 246 }
 247
 248 /*---------------------------------------------------------------------------*
 249  *      i4bctlclose - device driver close routine
 250  *---------------------------------------------------------------------------*/
 251 PDEVSTATIC int
 252 i4bctlclose(dev_t dev, int flag, int fmt, struct proc *p)
 253 {
 254         openflag = 0;
 255         return (0);
 256 }
 257
 258 /*---------------------------------------------------------------------------*
 259  *      i4bctlioctl - device driver ioctl routine
 260  *---------------------------------------------------------------------------*/
 261 PDEVSTATIC int
 262 #if defined (__FreeBSD_version) && __FreeBSD_version >= 300003
 263 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
 264 #elif defined(__bsdi__)
 265 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
 266 #else
 267 i4bctlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
 268 #endif
 269 {
 270 #if DO_I4B_DEBUG
 271         ctl_debug_t *cdbg;
 272         int error = 0;
 273 #endif
 274
 275 #if !DO_I4B_DEBUG
 276        return(ENODEV);
 277 #else
 278         if(minor(dev))
 279                 return(ENODEV);
 280
 281         switch(cmd)
 282         {
 283                 case I4B_CTL_GET_DEBUG:
 284                         cdbg = (ctl_debug_t *)data;
 285                         cdbg->l1 = i4b_l1_debug;
 286                         cdbg->l2 = i4b_l2_debug;
 287                         cdbg->l3 = i4b_l3_debug;
 288                         cdbg->l4 = i4b_l4_debug;
 289                         break;
 290
 291                 case I4B_CTL_SET_DEBUG:
 292                         cdbg = (ctl_debug_t *)data;
 293                         i4b_l1_debug = cdbg->l1;
 294                         i4b_l2_debug = cdbg->l2;
 295                         i4b_l3_debug = cdbg->l3;
 296                         i4b_l4_debug = cdbg->l4;
 297                         break;
 298
 299                 case I4B_CTL_GET_CHIPSTAT:
 300                 {
 301                         struct chipstat *cst;
 302                         cst = (struct chipstat *)data;
 303                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_GCST, cst);
 304                         break;
 305                 }
 306
 307                 case I4B_CTL_CLR_CHIPSTAT:
 308                 {
 309                         struct chipstat *cst;
 310                         cst = (struct chipstat *)data;
 311                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_CCST, cst);
 312                         break;
 313                 }
 314
 315                 case I4B_CTL_GET_LAPDSTAT:
 316                 {
 317                         l2stat_t *l2s;
 318                         l2_softc_t *sc;
 319                         l2s = (l2stat_t *)data;
 320
 321                         if( l2s->unit < 0 || l2s->unit > MAXL1UNITS)
 322                         {
 323                                 error = EINVAL;
 324                                 break;
 325                         }
 326
 327                         sc = &l2_softc[l2s->unit];
 328
 329                         bcopy(&sc->stat, &l2s->lapdstat, sizeof(lapdstat_t));
 330                         break;
 331                 }
 332
 333                 case I4B_CTL_CLR_LAPDSTAT:
 334                 {
 335                         int *up;
 336                         l2_softc_t *sc;
 337                         up = (int *)data;
 338
 339                         if( *up < 0 || *up > MAXL1UNITS)
 340                         {
 341                                 error = EINVAL;
 342                                 break;
 343                         }
 344
 345                         sc = &l2_softc[*up];
 346
 347                         bzero(&sc->stat, sizeof(lapdstat_t));
 348                         break;
 349                 }
 350
 351                 default:
 352                         error = ENOTTY;
 353                         break;
 354         }
 355         return(error);
 356 #endif DO_I4B_DEBUG
 357 }
 358
 359 #if defined(__FreeBSD__) && defined(OS_USES_POLL)
 360
 361 /*---------------------------------------------------------------------------*
 362  *      i4bctlpoll - device driver poll routine
 363  *---------------------------------------------------------------------------*/
 364 static int
 365 i4bctlpoll (dev_t dev, int events, struct proc *p)
 366 {
 367         return (ENODEV);
 368 }
 369
 370 #endif
 371
 372 #endif /* NI4BCTL > 0 */