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 1.3 2003/07/21 05:50:42 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         /* name */      "i4bctl",
 110         /* maj */       CDEV_MAJOR,
 111         /* flags */     0,
 112         /* port */      NULL,
 113         /* autoq */     0,
 114
 115         /* open */      i4bctlopen,
 116         /* close */     i4bctlclose,
 117         /* read */      noread,
 118         /* write */     nowrite,
 119         /* ioctl */     i4bctlioctl,
 120         /* poll */      POLLFIELD,
 121         /* mmap */      nommap,
 122         /* strategy */  nostrategy,
 123         /* dump */      nodump,
 124         /* psize */     nopsize
 125 };
 126 #else
 127 static struct cdevsw i4bctl_cdevsw =
 128         { i4bctlopen,   i4bctlclose,    noread,         nowrite,
 129           i4bctlioctl,  nostop,         nullreset,      nodevtotty,
 130           POLLFIELD,    nommap,         NULL,   "i4bctl", NULL, -1 };
 131 #endif
 132
 133 static void i4bctlattach(void *);
 134 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
 135
 136 #define PDEVSTATIC      static
 137 #endif /* __FreeBSD__ */
 138
 139 #if defined(__FreeBSD__) && __FreeBSD__ == 3
 140 #ifdef DEVFS
 141 static void *devfs_token;
 142 #endif
 143 #endif
 144
 145 #ifndef __FreeBSD__
 146 #define PDEVSTATIC      /* */
 147 void i4bctlattach __P((void));
 148 int i4bctlopen __P((dev_t dev, int flag, int fmt, struct proc *p));
 149 int i4bctlclose __P((dev_t dev, int flag, int fmt, struct proc *p));
 150 #ifdef __bsdi__
 151 int i4bctlioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p));
 152 #else
 153 int i4bctlioctl __P((dev_t dev, int cmd, caddr_t data, int flag, struct proc *p));
 154 #endif
 155 #endif  /* !FreeBSD */
 156
 157 #if BSD > 199306 && defined(__FreeBSD__)
 158 /*---------------------------------------------------------------------------*
 159  *      initialization at kernel load time
 160  *---------------------------------------------------------------------------*/
 161 static void
 162 i4bctlinit(void *unused)
 163 {
 164 #if defined(__FreeBSD__) && __FreeBSD__ >= 4
 165         cdevsw_add(&i4bctl_cdevsw);
 166 #else
 167         dev_t dev = makedev(CDEV_MAJOR, 0);
 168         cdevsw_add(&dev, &i4bctl_cdevsw, NULL);
 169 #endif
 170 }
 171
 172 SYSINIT(i4bctldev, SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, &i4bctlinit, NULL);
 173
 174 #endif /* BSD > 199306 && defined(__FreeBSD__) */
 175
 176 #ifdef __bsdi__
 177 int i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux);
 178 void dummy_i4bctlattach(struct device*, struct device *, void *);
 179
 180 #define CDEV_MAJOR 64
 181
 182 static struct cfdriver i4bctlcd =
 183         { NULL, "i4bctl", i4bctlmatch, dummy_i4bctlattach, DV_DULL,
 184           sizeof(struct cfdriver) };
 185 struct devsw i4bctlsw =
 186         { &i4bctlcd,
 187           i4bctlopen,   i4bctlclose,    noread,         nowrite,
 188           i4bctlioctl,  seltrue,        nommap,         nostrat,
 189           nodump,       nopsize,        0,              nostop
 190 };
 191
 192 int
 193 i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux)
 194 {
 195         printf("i4bctlmatch: aux=0x%x\n", aux);
 196         return 1;
 197 }
 198 void
 199 dummy_i4bctlattach(struct device *parent, struct device *self, void *aux)
 200 {
 201         printf("dummy_i4bctlattach: aux=0x%x\n", aux);
 202 }
 203 #endif /* __bsdi__ */
 204 /*---------------------------------------------------------------------------*
 205  *      interface attach routine
 206  *---------------------------------------------------------------------------*/
 207 PDEVSTATIC void
 208 #ifdef __FreeBSD__
 209 i4bctlattach(void *dummy)
 210 #else
 211 i4bctlattach()
 212 #endif
 213 {
 214 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
 215         printf("i4bctl: ISDN system control port attached\n");
 216 #endif
 217
 218 #if defined(__FreeBSD__)
 219 #if __FreeBSD__ == 3
 220
 221 #ifdef DEVFS
 222         devfs_token = devfs_add_devswf(&i4bctl_cdevsw, 0, DV_CHR,
 223                                        UID_ROOT, GID_WHEEL, 0600,
 224                                        "i4bctl");
 225 #endif
 226
 227 #else
 228         make_dev(&i4bctl_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4bctl");
 229 #endif
 230 #endif
 231 }
 232
 233 /*---------------------------------------------------------------------------*
 234  *      i4bctlopen - device driver open routine
 235  *---------------------------------------------------------------------------*/
 236 PDEVSTATIC int
 237 i4bctlopen(dev_t dev, int flag, int fmt, struct proc *p)
 238 {
 239         if(minor(dev))
 240                 return (ENXIO);
 241
 242         if(openflag)
 243                 return (EBUSY);
 244
 245         openflag = 1;
 246
 247         return (0);
 248 }
 249
 250 /*---------------------------------------------------------------------------*
 251  *      i4bctlclose - device driver close routine
 252  *---------------------------------------------------------------------------*/
 253 PDEVSTATIC int
 254 i4bctlclose(dev_t dev, int flag, int fmt, struct proc *p)
 255 {
 256         openflag = 0;
 257         return (0);
 258 }
 259
 260 /*---------------------------------------------------------------------------*
 261  *      i4bctlioctl - device driver ioctl routine
 262  *---------------------------------------------------------------------------*/
 263 PDEVSTATIC int
 264 #if defined (__FreeBSD_version) && __FreeBSD_version >= 300003
 265 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
 266 #elif defined(__bsdi__)
 267 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
 268 #else
 269 i4bctlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
 270 #endif
 271 {
 272 #if DO_I4B_DEBUG
 273         ctl_debug_t *cdbg;
 274         int error = 0;
 275 #endif
 276
 277 #if !DO_I4B_DEBUG
 278        return(ENODEV);
 279 #else
 280         if(minor(dev))
 281                 return(ENODEV);
 282
 283         switch(cmd)
 284         {
 285                 case I4B_CTL_GET_DEBUG:
 286                         cdbg = (ctl_debug_t *)data;
 287                         cdbg->l1 = i4b_l1_debug;
 288                         cdbg->l2 = i4b_l2_debug;
 289                         cdbg->l3 = i4b_l3_debug;
 290                         cdbg->l4 = i4b_l4_debug;
 291                         break;
 292
 293                 case I4B_CTL_SET_DEBUG:
 294                         cdbg = (ctl_debug_t *)data;
 295                         i4b_l1_debug = cdbg->l1;
 296                         i4b_l2_debug = cdbg->l2;
 297                         i4b_l3_debug = cdbg->l3;
 298                         i4b_l4_debug = cdbg->l4;
 299                         break;
 300
 301                 case I4B_CTL_GET_CHIPSTAT:
 302                 {
 303                         struct chipstat *cst;
 304                         cst = (struct chipstat *)data;
 305                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_GCST, cst);
 306                         break;
 307                 }
 308
 309                 case I4B_CTL_CLR_CHIPSTAT:
 310                 {
 311                         struct chipstat *cst;
 312                         cst = (struct chipstat *)data;
 313                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_CCST, cst);
 314                         break;
 315                 }
 316
 317                 case I4B_CTL_GET_LAPDSTAT:
 318                 {
 319                         l2stat_t *l2s;
 320                         l2_softc_t *sc;
 321                         l2s = (l2stat_t *)data;
 322
 323                         if( l2s->unit < 0 || l2s->unit > MAXL1UNITS)
 324                         {
 325                                 error = EINVAL;
 326                                 break;
 327                         }
 328
 329                         sc = &l2_softc[l2s->unit];
 330
 331                         bcopy(&sc->stat, &l2s->lapdstat, sizeof(lapdstat_t));
 332                         break;
 333                 }
 334
 335                 case I4B_CTL_CLR_LAPDSTAT:
 336                 {
 337                         int *up;
 338                         l2_softc_t *sc;
 339                         up = (int *)data;
 340
 341                         if( *up < 0 || *up > MAXL1UNITS)
 342                         {
 343                                 error = EINVAL;
 344                                 break;
 345                         }
 346
 347                         sc = &l2_softc[*up];
 348
 349                         bzero(&sc->stat, sizeof(lapdstat_t));
 350                         break;
 351                 }
 352
 353                 default:
 354                         error = ENOTTY;
 355                         break;
 356         }
 357         return(error);
 358 #endif DO_I4B_DEBUG
 359 }
 360
 361 #if defined(__FreeBSD__) && defined(OS_USES_POLL)
 362
 363 /*---------------------------------------------------------------------------*
 364  *      i4bctlpoll - device driver poll routine
 365  *---------------------------------------------------------------------------*/
 366 static int
 367 i4bctlpoll (dev_t dev, int events, struct proc *p)
 368 {
 369         return (ENODEV);
 370 }
 371
 372 #endif
 373
 374 #endif /* NI4BCTL > 0 */