The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netisdn/i4b_ctl.c

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    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 1.12 2003/10/03 16:38:44 pooka Exp $
   31  *
   32  * $FreeBSD$
   33  *
   34  *      last edit-date: [Fri Jan  5 11:33:46 2001]
   35  *
   36  *---------------------------------------------------------------------------*/
   37 
   38 #include <sys/cdefs.h>
   39 __KERNEL_RCSID(0, "$NetBSD: i4b_ctl.c,v 1.12 2003/10/03 16:38:44 pooka Exp $");
   40 
   41 #include "isdnctl.h"
   42 
   43 #if NISDNCTL > 0
   44 
   45 #include <sys/param.h>
   46 
   47 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
   48 #include <sys/ioccom.h>
   49 #include <i386/isa/isa_device.h>
   50 #else
   51 #include <sys/ioctl.h>
   52 #endif
   53 
   54 #include <sys/kernel.h>
   55 #include <sys/systm.h>
   56 #include <sys/conf.h>
   57 #include <sys/mbuf.h>
   58 #include <sys/proc.h>
   59 #include <sys/fcntl.h>
   60 #include <sys/socket.h>
   61 #include <net/if.h>
   62 
   63 #ifdef __FreeBSD__
   64 
   65 #if defined(__FreeBSD__) && __FreeBSD__ == 3
   66 #include "opt_devfs.h"
   67 #endif
   68 
   69 #ifdef DEVFS
   70 #include <sys/devfsext.h>
   71 #endif
   72 
   73 #endif /* __FreeBSD__ */
   74 
   75 #ifdef __FreeBSD__
   76 #include <machine/i4b_debug.h>
   77 #include <machine/i4b_ioctl.h>
   78 #elif defined(__bsdi__)
   79 #include <i4b/i4b_debug.h>
   80 #include <i4b/i4b_ioctl.h>
   81 #else
   82 #include <machine/bus.h>
   83 #include <sys/device.h>
   84 #include <netisdn/i4b_debug.h>
   85 #include <netisdn/i4b_ioctl.h>
   86 #endif
   87 
   88 #include <netisdn/i4b_global.h>
   89 #include <netisdn/i4b_mbuf.h>
   90 #include <netisdn/i4b_l3l4.h>
   91 
   92 #include <netisdn/i4b_l2.h>
   93 #include <netisdn/i4b_l1l2.h>
   94 #include <netisdn/i4b_l2.h>
   95 
   96 static int openflag = 0;
   97 
   98 #if BSD > 199306 && defined(__FreeBSD__)
   99 static  d_open_t        i4bctlopen;
  100 static  d_close_t       i4bctlclose;
  101 static  d_ioctl_t       i4bctlioctl;
  102 
  103 #ifdef OS_USES_POLL
  104 static d_poll_t         i4bctlpoll;
  105 #define POLLFIELD       i4bctlpoll
  106 #else
  107 #define POLLFIELD       noselect
  108 #endif
  109 
  110 #define CDEV_MAJOR 55
  111 
  112 #if defined(__FreeBSD__) && __FreeBSD__ >= 4
  113 static struct cdevsw i4bctl_cdevsw = {
  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         /* name */      "i4bctl",
  123         /* maj */       CDEV_MAJOR,
  124         /* dump */      nodump,
  125         /* psize */     nopsize,
  126         /* flags */     0,
  127         /* bmaj */      -1
  128 };
  129 #else
  130 static struct cdevsw i4bctl_cdevsw = 
  131         { i4bctlopen,   i4bctlclose,    noread,         nowrite,
  132           i4bctlioctl,  nostop,         nullreset,      nodevtotty,
  133           POLLFIELD,    nommap,         NULL,   "i4bctl", NULL, -1 };
  134 #endif
  135 
  136 static void i4bctlattach(void *);
  137 PSEUDO_SET(i4bctlattach, i4b_i4bctldrv);
  138 
  139 #define PDEVSTATIC      static
  140 #endif /* __FreeBSD__ */
  141 
  142 #if defined(__FreeBSD__) && __FreeBSD__ == 3
  143 #ifdef DEVFS
  144 static void *devfs_token;
  145 #endif
  146 #endif
  147 
  148 #ifndef __FreeBSD__
  149 #define PDEVSTATIC      /* */
  150 void isdnctlattach __P((void));
  151 int isdnctlopen __P((dev_t dev, int flag, int fmt, struct proc *p));
  152 int isdnctlclose __P((dev_t dev, int flag, int fmt, struct proc *p));
  153 int isdnctlioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p));
  154 #endif  /* !FreeBSD */
  155 
  156 #ifdef __NetBSD__
  157 const struct cdevsw isdnctl_cdevsw = {
  158         isdnctlopen, isdnctlclose, noread, nowrite, isdnctlioctl,
  159         nostop, notty, nopoll, nommap, nokqfilter,
  160 };
  161 #endif /* __NetBSD__ */
  162 
  163 #if BSD > 199306 && defined(__FreeBSD__)
  164 /*---------------------------------------------------------------------------*
  165  *      initialization at kernel load time
  166  *---------------------------------------------------------------------------*/
  167 static void
  168 i4bctlinit(void *unused)
  169 {
  170 #if defined(__FreeBSD__) && __FreeBSD__ >= 4
  171         cdevsw_add(&i4bctl_cdevsw);
  172 #else
  173         dev_t dev = makedev(CDEV_MAJOR, 0);
  174         cdevsw_add(&dev, &i4bctl_cdevsw, NULL);
  175 #endif
  176 }
  177 
  178 SYSINIT(i4bctldev, SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR, &i4bctlinit, NULL);
  179 
  180 #endif /* BSD > 199306 && defined(__FreeBSD__) */
  181 
  182 #ifdef __bsdi__
  183 int i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux);
  184 void dummy_i4bctlattach(struct device*, struct device *, void *);
  185 
  186 #define CDEV_MAJOR 64
  187 
  188 static struct cfdriver i4bctlcd =
  189         { NULL, "i4bctl", i4bctlmatch, dummy_i4bctlattach, DV_DULL,
  190           sizeof(struct cfdriver) };
  191 struct devsw i4bctlsw = 
  192         { &i4bctlcd,
  193           i4bctlopen,   i4bctlclose,    noread,         nowrite,
  194           i4bctlioctl,  seltrue,        nommap,         nostrat,
  195           nodump,       nopsize,        0,              nostop
  196 };
  197 
  198 int
  199 i4bctlmatch(struct device *parent, struct cfdata *cf, void *aux)
  200 {
  201         printf("i4bctlmatch: aux=0x%x\n", aux);
  202         return 1;
  203 }
  204 void
  205 dummy_i4bctlattach(struct device *parent, struct device *self, void *aux)
  206 {
  207         printf("dummy_i4bctlattach: aux=0x%x\n", aux);
  208 }
  209 #endif /* __bsdi__ */
  210 /*---------------------------------------------------------------------------*
  211  *      interface attach routine
  212  *---------------------------------------------------------------------------*/
  213 PDEVSTATIC void
  214 #ifdef __FreeBSD__
  215 isdnctlattach(void *dummy)
  216 #else
  217 isdnctlattach()
  218 #endif
  219 {
  220 
  221 #if defined(__FreeBSD__)
  222 #if __FreeBSD__ == 3
  223 
  224 #ifdef DEVFS
  225         devfs_token = devfs_add_devswf(&i4bctl_cdevsw, 0, DV_CHR,
  226                                        UID_ROOT, GID_WHEEL, 0600,
  227                                        "i4bctl");
  228 #endif
  229 
  230 #else
  231         make_dev(&i4bctl_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4bctl");
  232 #endif
  233 #endif
  234 }
  235 
  236 /*---------------------------------------------------------------------------*
  237  *      i4bctlopen - device driver open routine
  238  *---------------------------------------------------------------------------*/
  239 PDEVSTATIC int
  240 isdnctlopen(dev_t dev, int flag, int fmt, struct proc *p)
  241 {
  242         if(minor(dev))
  243                 return (ENXIO);
  244 
  245         if(openflag)
  246                 return (EBUSY);
  247         
  248         openflag = 1;
  249         
  250         return (0);
  251 }
  252 
  253 /*---------------------------------------------------------------------------*
  254  *      i4bctlclose - device driver close routine
  255  *---------------------------------------------------------------------------*/
  256 PDEVSTATIC int
  257 isdnctlclose(dev_t dev, int flag, int fmt, struct proc *p)
  258 {
  259         openflag = 0;
  260         return (0);
  261 }
  262 
  263 /*---------------------------------------------------------------------------*
  264  *      i4bctlioctl - device driver ioctl routine
  265  *---------------------------------------------------------------------------*/
  266 PDEVSTATIC int
  267 isdnctlioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
  268 {
  269 #if DO_I4B_DEBUG
  270         ctl_debug_t *cdbg;      
  271         int error = 0;
  272 #endif
  273         
  274 #if !DO_I4B_DEBUG
  275         return(ENODEV);
  276 #else
  277         if(minor(dev))
  278                 return(ENODEV);
  279 
  280         switch(cmd)
  281         {
  282                 case I4B_CTL_GET_DEBUG:
  283                         cdbg = (ctl_debug_t *)data;
  284                         cdbg->l1 = i4b_l1_debug;
  285                         cdbg->l2 = i4b_l2_debug;
  286                         cdbg->l3 = i4b_l3_debug;
  287                         cdbg->l4 = i4b_l4_debug;
  288                         break;
  289                 
  290                 case I4B_CTL_SET_DEBUG:
  291                         cdbg = (ctl_debug_t *)data;
  292                         i4b_l1_debug = cdbg->l1;
  293                         i4b_l2_debug = cdbg->l2;
  294                         i4b_l3_debug = cdbg->l3;
  295                         i4b_l4_debug = cdbg->l4;
  296                         break;
  297 
  298                 case I4B_CTL_GET_CHIPSTAT:
  299                 {
  300                         struct chipstat *cst;
  301                         l2_softc_t * scl2;
  302                         cst = (struct chipstat *)data;
  303                         scl2 = (l2_softc_t*)isdn_find_softc_by_isdnif(cst->driver_unit);
  304                         scl2->driver->mph_command_req(scl2->l1_token, CMR_GCST, cst);
  305                         break;
  306                 }
  307 
  308                 case I4B_CTL_CLR_CHIPSTAT:
  309                 {
  310                         struct chipstat *cst;
  311                         l2_softc_t * scl2;
  312                         cst = (struct chipstat *)data;
  313                         scl2 = (l2_softc_t*)isdn_find_softc_by_isdnif(cst->driver_unit);
  314                         scl2->driver->mph_command_req(scl2->l1_token, CMR_CCST, cst);
  315                         break;
  316                 }
  317 
  318                 case I4B_CTL_GET_LAPDSTAT:
  319                 {
  320                         l2stat_t *l2s;
  321                         l2_softc_t *sc;
  322                         l2s = (l2stat_t *)data;
  323 
  324                         sc = (l2_softc_t*)isdn_find_softc_by_isdnif(l2s->unit);
  325                         if (sc == NULL) {
  326                                 error = EINVAL;
  327                                 break;
  328                         }
  329                           
  330                         memcpy(&l2s->lapdstat, &sc->stat, 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                         sc = (l2_softc_t*)isdn_find_softc_by_isdnif(*up);
  341                         if (sc == NULL) {
  342                                 error = EINVAL;
  343                                 break;
  344                         }
  345                           
  346                         memset(&sc->stat, 0, sizeof(lapdstat_t));
  347                         break;
  348                 }
  349 
  350                 default:
  351                         error = ENOTTY;
  352                         break;
  353         }
  354         return(error);
  355 #endif /* DO_I4B_DEBUG */
  356 }
  357 
  358 #if defined(__FreeBSD__) && defined(OS_USES_POLL)
  359 
  360 /*---------------------------------------------------------------------------*
  361  *      i4bctlpoll - device driver poll routine
  362  *---------------------------------------------------------------------------*/
  363 static int
  364 isdnctlpoll (dev_t dev, int events, struct proc *p)
  365 {
  366         return (ENODEV);
  367 }
  368 
  369 #endif
  370 
  371 #endif /* NISDNCTL > 0 */

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