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 1.10 2004/07/02 15:43:10 joerg 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 #if defined(__DragonFly__) || (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 #if defined(__DragonFly__) || defined(__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 #if defined(__DragonFly__) || defined(__FreeBSD__)
  74 #include <net/i4b/include/machine/i4b_debug.h>
  75 #include <net/i4b/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 "../include/i4b_global.h"
  87 #include "../include/i4b_l3l4.h"
  88 #include "../layer2/i4b_l2.h"
  89
  90 static int openflag = 0;
  91
  92 #if defined(__DragonFly__) || (BSD > 199306 && defined(__FreeBSD__))
  93 static  d_open_t        i4bctlopen;
  94 static  d_close_t       i4bctlclose;
  95 static  d_ioctl_t       i4bctlioctl;
  96
  97 #ifdef OS_USES_POLL
  98 static d_poll_t         i4bctlpoll;
  99 #define POLLFIELD       i4bctlpoll
 100 #else
 101 #define POLLFIELD       noselect
 102 #endif
 103
 104 #define CDEV_MAJOR 55
 105
 106 #if defined(__DragonFly__) || (defined(__FreeBSD__) && __FreeBSD__ >= 4)
 107 static struct cdevsw i4bctl_cdevsw = {
 108         /* name */      "i4bctl",
 109         /* maj */       CDEV_MAJOR,
 110         /* flags */     0,
 111         /* port */      NULL,
 112         /* clone */     NULL,
 113
 114         /* open */      i4bctlopen,
 115         /* close */     i4bctlclose,
 116         /* read */      noread,
 117         /* write */     nowrite,
 118         /* ioctl */     i4bctlioctl,
 119         /* poll */      POLLFIELD,
 120         /* mmap */      nommap,
 121         /* strategy */  nostrategy,
 122         /* dump */      nodump,
 123         /* psize */     nopsize
 124 };
 125 #else
 126 static struct cdevsw i4bctl_cdevsw =
 127         { i4bctlopen,   i4bctlclose,    noread,         nowrite,
 128           i4bctlioctl,  nostop,         nullreset,      nodevtotty,
 129           POLLFIELD,    nommap,         NULL,   "i4bctl", NULL, -1 };
 130 #endif
 131
 132 static void i4bctlattach(void *);
 133 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
 134
 135 #define PDEVSTATIC      static
 136 #endif /* __FreeBSD__ */
 137
 138 #if defined(__FreeBSD__) && __FreeBSD__ == 3
 139 #ifdef DEVFS
 140 static void *devfs_token;
 141 #endif
 142 #endif
 143
 144 #if !defined(__DragonFly__) && !defined(__FreeBSD__)
 145 #define PDEVSTATIC      /* */
 146 void i4bctlattach (void);
 147 int i4bctlopen (dev_t dev, int flag, int fmt, struct proc *p);
 148 int i4bctlclose (dev_t dev, int flag, int fmt, struct proc *p);
 149 #ifdef __bsdi__
 150 int i4bctlioctl (dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p);
 151 #else
 152 int i4bctlioctl (dev_t dev, int cmd, caddr_t data, int flag, struct proc *p);
 153 #endif
 154 #endif  /* !FreeBSD */
 155
 156 #if defined(__DragonFly__) || (BSD > 199306 && defined(__FreeBSD__))
 157 /*---------------------------------------------------------------------------*
 158  *      initialization at kernel load time
 159  *---------------------------------------------------------------------------*/
 160 static void
 161 i4bctlinit(void *unused)
 162 {
 163 #if defined(__DragonFly__) || (defined(__FreeBSD__) && __FreeBSD__ >= 4)
 164         cdevsw_add(&i4bctl_cdevsw, 0, 0);
 165 #else
 166         dev_t dev = make_adhoc_dev(&i4bctl, 0);
 167         cdevsw_add(&dev, &i4bctl_cdevsw, NULL);
 168 #endif
 169 }
 170
 171 SYSINIT(i4bctldev, SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, &i4bctlinit, NULL);
 172
 173 #endif /* BSD > 199306 && defined(__FreeBSD__) */
 174
 175 #ifdef __bsdi__
 176 int i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux);
 177 void dummy_i4bctlattach(struct device*, struct device *, void *);
 178
 179 #define CDEV_MAJOR 64
 180
 181 static struct cfdriver i4bctlcd =
 182         { NULL, "i4bctl", i4bctlmatch, dummy_i4bctlattach, DV_DULL,
 183           sizeof(struct cfdriver) };
 184 struct devsw i4bctlsw =
 185         { &i4bctlcd,
 186           i4bctlopen,   i4bctlclose,    noread,         nowrite,
 187           i4bctlioctl,  seltrue,        nommap,         nostrat,
 188           nodump,       nopsize,        0,              nostop
 189 };
 190
 191 int
 192 i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux)
 193 {
 194         printf("i4bctlmatch: aux=0x%x\n", aux);
 195         return 1;
 196 }
 197 void
 198 dummy_i4bctlattach(struct device *parent, struct device *self, void *aux)
 199 {
 200         printf("dummy_i4bctlattach: aux=0x%x\n", aux);
 201 }
 202 #endif /* __bsdi__ */
 203 /*---------------------------------------------------------------------------*
 204  *      interface attach routine
 205  *---------------------------------------------------------------------------*/
 206 PDEVSTATIC void
 207 #if defined(__DragonFly__) || defined(__FreeBSD__)
 208 i4bctlattach(void *dummy)
 209 #else
 210 i4bctlattach()
 211 #endif
 212 {
 213 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
 214         printf("i4bctl: ISDN system control port attached\n");
 215 #endif
 216
 217 #if defined(__FreeBSD__)
 218 #if __FreeBSD__ == 3
 219
 220 #ifdef DEVFS
 221         devfs_token = devfs_add_devswf(&i4bctl_cdevsw, 0, DV_CHR,
 222                                        UID_ROOT, GID_WHEEL, 0600,
 223                                        "i4bctl");
 224 #endif
 225
 226 #else
 227         make_dev(&i4bctl_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4bctl");
 228 #endif
 229 #endif
 230 }
 231
 232 /*---------------------------------------------------------------------------*
 233  *      i4bctlopen - device driver open routine
 234  *---------------------------------------------------------------------------*/
 235 PDEVSTATIC int
 236 i4bctlopen(dev_t dev, int flag, int fmt, struct thread *td)
 237 {
 238         if(minor(dev))
 239                 return (ENXIO);
 240
 241         if(openflag)
 242                 return (EBUSY);
 243
 244         openflag = 1;
 245
 246         return (0);
 247 }
 248
 249 /*---------------------------------------------------------------------------*
 250  *      i4bctlclose - device driver close routine
 251  *---------------------------------------------------------------------------*/
 252 PDEVSTATIC int
 253 i4bctlclose(dev_t dev, int flag, int fmt, struct thread *td)
 254 {
 255         openflag = 0;
 256         return (0);
 257 }
 258
 259 /*---------------------------------------------------------------------------*
 260  *      i4bctlioctl - device driver ioctl routine
 261  *---------------------------------------------------------------------------*/
 262 PDEVSTATIC int
 263 #if defined(__DragonFly__) || (defined (__FreeBSD_version) && __FreeBSD_version >= 300003)
 264 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
 265 #elif defined(__bsdi__)
 266 i4bctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
 267 #else
 268 i4bctlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
 269 #endif
 270 {
 271 #if DO_I4B_DEBUG
 272         ctl_debug_t *cdbg;
 273         int error = 0;
 274 #endif
 275
 276 #if !DO_I4B_DEBUG
 277        return(ENODEV);
 278 #else
 279         if(minor(dev))
 280                 return(ENODEV);
 281
 282         switch(cmd)
 283         {
 284                 case I4B_CTL_GET_DEBUG:
 285                         cdbg = (ctl_debug_t *)data;
 286                         cdbg->l1 = i4b_l1_debug;
 287                         cdbg->l2 = i4b_l2_debug;
 288                         cdbg->l3 = i4b_l3_debug;
 289                         cdbg->l4 = i4b_l4_debug;
 290                         break;
 291
 292                 case I4B_CTL_SET_DEBUG:
 293                         cdbg = (ctl_debug_t *)data;
 294                         i4b_l1_debug = cdbg->l1;
 295                         i4b_l2_debug = cdbg->l2;
 296                         i4b_l3_debug = cdbg->l3;
 297                         i4b_l4_debug = cdbg->l4;
 298                         break;
 299
 300                 case I4B_CTL_GET_CHIPSTAT:
 301                 {
 302                         struct chipstat *cst;
 303                         cst = (struct chipstat *)data;
 304                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_GCST, cst);
 305                         break;
 306                 }
 307
 308                 case I4B_CTL_CLR_CHIPSTAT:
 309                 {
 310                         struct chipstat *cst;
 311                         cst = (struct chipstat *)data;
 312                         (*ctrl_desc[cst->driver_unit].N_MGMT_COMMAND)(cst->driver_unit, CMR_CCST, cst);
 313                         break;
 314                 }
 315
 316                 case I4B_CTL_GET_LAPDSTAT:
 317                 {
 318                         l2stat_t *l2s;
 319                         l2_softc_t *sc;
 320                         l2s = (l2stat_t *)data;
 321
 322                         if( l2s->unit < 0 || l2s->unit > MAXL1UNITS)
 323                         {
 324                                 error = EINVAL;
 325                                 break;
 326                         }
 327
 328                         sc = &l2_softc[l2s->unit];
 329
 330                         bcopy(&sc->stat, &l2s->lapdstat, sizeof(lapdstat_t));
 331                         break;
 332                 }
 333
 334                 case I4B_CTL_CLR_LAPDSTAT:
 335                 {
 336                         int *up;
 337                         l2_softc_t *sc;
 338                         up = (int *)data;
 339
 340                         if( *up < 0 || *up > MAXL1UNITS)
 341                         {
 342                                 error = EINVAL;
 343                                 break;
 344                         }
 345
 346                         sc = &l2_softc[*up];
 347
 348                         bzero(&sc->stat, sizeof(lapdstat_t));
 349                         break;
 350                 }
 351
 352                 default:
 353                         error = ENOTTY;
 354                         break;
 355         }
 356         return(error);
 357 #endif /* DO_I4B_DEBUG */
 358 }
 359
 360 #if (defined(__DragonFly__) || defined(__FreeBSD__)) && defined(OS_USES_POLL)
 361
 362 /*---------------------------------------------------------------------------*
 363  *      i4bctlpoll - device driver poll routine
 364  *---------------------------------------------------------------------------*/
 365 static int
 366 i4bctlpoll (dev_t dev, int events, struct thread *td)
 367 {
 368         return (ENODEV);
 369 }
 370
 371 #endif
 372
 373 #endif /* NI4BCTL > 0 */