etherswitch.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2011-2012 Stefan Bethke.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #include <sys/param.h>
   32 #include <sys/bus.h>
   33 #include <sys/conf.h>
   34 #include <sys/fcntl.h>
   35 #include <sys/kernel.h>
   36 #include <sys/malloc.h>
   37 #include <sys/module.h>
   38 #include <sys/socket.h>
   39 #include <sys/sx.h>
   40 #include <sys/systm.h>
   41 #include <sys/uio.h>
   42 
   43 #include <net/if.h>
   44 
   45 #include <dev/etherswitch/etherswitch.h>
   46 
   47 #include "etherswitch_if.h"
   48 
   49 struct etherswitch_softc {
   50         device_t sc_dev;
   51         struct cdev *sc_devnode;
   52 };
   53 
   54 static int etherswitch_probe(device_t);
   55 static int etherswitch_attach(device_t);
   56 static int etherswitch_detach(device_t);
   57 static void etherswitch_identify(driver_t *driver, device_t parent);
   58 
   59 static device_method_t etherswitch_methods[] = {
   60         /* device interface */
   61         DEVMETHOD(device_identify,      etherswitch_identify),
   62         DEVMETHOD(device_probe,         etherswitch_probe),
   63         DEVMETHOD(device_attach,        etherswitch_attach),
   64         DEVMETHOD(device_detach,        etherswitch_detach),
   65 
   66         DEVMETHOD_END
   67 };
   68 
   69 driver_t etherswitch_driver = {
   70         "etherswitch",
   71         etherswitch_methods,
   72         sizeof(struct etherswitch_softc),
   73 };
   74 
   75 static  d_ioctl_t       etherswitchioctl;
   76 
   77 static struct cdevsw etherswitch_cdevsw = {
   78         .d_version =    D_VERSION,
   79         .d_flags =      D_TRACKCLOSE,
   80         .d_ioctl =      etherswitchioctl,
   81         .d_name =       "etherswitch",
   82 };
   83 
   84 static void
   85 etherswitch_identify(driver_t *driver, device_t parent)
   86 {
   87         if (device_find_child(parent, "etherswitch", -1) == NULL)
   88                 BUS_ADD_CHILD(parent, 0, "etherswitch", -1);
   89 }
   90 
   91 static int
   92 etherswitch_probe(device_t dev)
   93 {
   94         device_set_desc(dev, "Switch controller");
   95 
   96         return (0);
   97 }
   98         
   99 static int
  100 etherswitch_attach(device_t dev)
  101 {
  102         int err;
  103         struct etherswitch_softc *sc;
  104         struct make_dev_args devargs;
  105 
  106         sc = device_get_softc(dev);
  107         sc->sc_dev = dev;
  108         make_dev_args_init(&devargs);
  109         devargs.mda_devsw = &etherswitch_cdevsw;
  110         devargs.mda_uid = UID_ROOT;
  111         devargs.mda_gid = GID_WHEEL;
  112         devargs.mda_mode = 0600;
  113         devargs.mda_si_drv1 = sc;
  114         err = make_dev_s(&devargs, &sc->sc_devnode, "etherswitch%d",
  115             device_get_unit(dev));
  116         if (err != 0) {
  117                 device_printf(dev, "failed to create character device\n");
  118                 return (ENXIO);
  119         }
  120 
  121         return (0);
  122 }
  123 
  124 static int
  125 etherswitch_detach(device_t dev)
  126 {
  127         struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
  128 
  129         if (sc->sc_devnode)
  130                 destroy_dev(sc->sc_devnode);
  131 
  132         return (0);
  133 }
  134 
  135 static int
  136 etherswitchioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flags, struct thread *td)
  137 {
  138         struct etherswitch_softc *sc = cdev->si_drv1;
  139         device_t dev = sc->sc_dev;
  140         device_t etherswitch = device_get_parent(dev);
  141         etherswitch_conf_t conf;
  142         etherswitch_info_t *info;
  143         etherswitch_reg_t *reg;
  144         etherswitch_phyreg_t *phyreg;
  145         etherswitch_portid_t *portid;
  146         int error = 0;
  147 
  148         switch (cmd) {
  149         case IOETHERSWITCHGETINFO:
  150                 info = ETHERSWITCH_GETINFO(etherswitch);
  151                 bcopy(info, data, sizeof(etherswitch_info_t));
  152                 break;
  153                 
  154         case IOETHERSWITCHGETREG:
  155                 reg = (etherswitch_reg_t *)data;
  156                 ETHERSWITCH_LOCK(etherswitch);
  157                 reg->val = ETHERSWITCH_READREG(etherswitch, reg->reg);
  158                 ETHERSWITCH_UNLOCK(etherswitch);
  159                 break;
  160         
  161         case IOETHERSWITCHSETREG:
  162                 reg = (etherswitch_reg_t *)data;
  163                 ETHERSWITCH_LOCK(etherswitch);
  164                 error = ETHERSWITCH_WRITEREG(etherswitch, reg->reg, reg->val);
  165                 ETHERSWITCH_UNLOCK(etherswitch);
  166                 break;
  167 
  168         case IOETHERSWITCHGETPORT:
  169                 error = ETHERSWITCH_GETPORT(etherswitch, (etherswitch_port_t *)data);
  170                 break;
  171 
  172         case IOETHERSWITCHSETPORT:
  173                 error = ETHERSWITCH_SETPORT(etherswitch, (etherswitch_port_t *)data);
  174                 break;
  175 
  176         case IOETHERSWITCHGETVLANGROUP:
  177                 error = ETHERSWITCH_GETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
  178                 break;
  179 
  180         case IOETHERSWITCHSETVLANGROUP:
  181                 error = ETHERSWITCH_SETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
  182                 break;
  183 
  184         case IOETHERSWITCHGETPHYREG:
  185                 phyreg = (etherswitch_phyreg_t *)data;
  186                 phyreg->val = ETHERSWITCH_READPHYREG(etherswitch, phyreg->phy, phyreg->reg);
  187                 break;
  188         
  189         case IOETHERSWITCHSETPHYREG:
  190                 phyreg = (etherswitch_phyreg_t *)data;
  191                 error = ETHERSWITCH_WRITEPHYREG(etherswitch, phyreg->phy, phyreg->reg, phyreg->val);
  192                 break;
  193 
  194         case IOETHERSWITCHGETCONF:
  195                 bzero(&conf, sizeof(etherswitch_conf_t));
  196                 error = ETHERSWITCH_GETCONF(etherswitch, &conf);
  197                 bcopy(&conf, data, sizeof(etherswitch_conf_t));
  198                 break;
  199 
  200         case IOETHERSWITCHSETCONF:
  201                 error = ETHERSWITCH_SETCONF(etherswitch, (etherswitch_conf_t *)data);
  202                 break;
  203 
  204         case IOETHERSWITCHFLUSHALL:
  205                 error = ETHERSWITCH_FLUSH_ALL(etherswitch);
  206                 break;
  207 
  208         case IOETHERSWITCHFLUSHPORT:
  209                 portid = (etherswitch_portid_t *)data;
  210                 error = ETHERSWITCH_FLUSH_PORT(etherswitch, portid->es_port);
  211                 break;
  212 
  213         case IOETHERSWITCHGETTABLE:
  214                 error = ETHERSWITCH_FETCH_TABLE(etherswitch, (void *) data);
  215                 break;
  216 
  217         case IOETHERSWITCHGETTABLEENTRY:
  218                 error = ETHERSWITCH_FETCH_TABLE_ENTRY(etherswitch, (void *) data);
  219                 break;
  220 
  221         default:
  222                 error = ENOTTY;
  223         }
  224 
  225         return (error);
  226 }
  227 
  228 MODULE_VERSION(etherswitch, 1);

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FreeBSD/Linux Kernel Cross Reference sys/dev/etherswitch/etherswitch.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/etherswitch/etherswitch.c