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 devclass_t etherswitch_devclass;
   60 
   61 static device_method_t etherswitch_methods[] = {
   62         /* device interface */
   63         DEVMETHOD(device_identify,      etherswitch_identify),
   64         DEVMETHOD(device_probe,         etherswitch_probe),
   65         DEVMETHOD(device_attach,        etherswitch_attach),
   66         DEVMETHOD(device_detach,        etherswitch_detach),
   67 
   68         DEVMETHOD_END
   69 };
   70 
   71 driver_t etherswitch_driver = {
   72         "etherswitch",
   73         etherswitch_methods,
   74         sizeof(struct etherswitch_softc),
   75 };
   76 
   77 static  d_ioctl_t       etherswitchioctl;
   78 
   79 static struct cdevsw etherswitch_cdevsw = {
   80         .d_version =    D_VERSION,
   81         .d_flags =      D_TRACKCLOSE,
   82         .d_ioctl =      etherswitchioctl,
   83         .d_name =       "etherswitch",
   84 };
   85 
   86 static void
   87 etherswitch_identify(driver_t *driver, device_t parent)
   88 {
   89         if (device_find_child(parent, "etherswitch", -1) == NULL)
   90                 BUS_ADD_CHILD(parent, 0, "etherswitch", -1);
   91 }
   92 
   93 static int
   94 etherswitch_probe(device_t dev)
   95 {
   96         device_set_desc(dev, "Switch controller");
   97 
   98         return (0);
   99 }
  100         
  101 static int
  102 etherswitch_attach(device_t dev)
  103 {
  104         int err;
  105         struct etherswitch_softc *sc;
  106         struct make_dev_args devargs;
  107 
  108         sc = device_get_softc(dev);
  109         sc->sc_dev = dev;
  110         make_dev_args_init(&devargs);
  111         devargs.mda_devsw = &etherswitch_cdevsw;
  112         devargs.mda_uid = UID_ROOT;
  113         devargs.mda_gid = GID_WHEEL;
  114         devargs.mda_mode = 0600;
  115         devargs.mda_si_drv1 = sc;
  116         err = make_dev_s(&devargs, &sc->sc_devnode, "etherswitch%d",
  117             device_get_unit(dev));
  118         if (err != 0) {
  119                 device_printf(dev, "failed to create character device\n");
  120                 return (ENXIO);
  121         }
  122 
  123         return (0);
  124 }
  125 
  126 static int
  127 etherswitch_detach(device_t dev)
  128 {
  129         struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
  130 
  131         if (sc->sc_devnode)
  132                 destroy_dev(sc->sc_devnode);
  133 
  134         return (0);
  135 }
  136 
  137 static int
  138 etherswitchioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flags, struct thread *td)
  139 {
  140         struct etherswitch_softc *sc = cdev->si_drv1;
  141         device_t dev = sc->sc_dev;
  142         device_t etherswitch = device_get_parent(dev);
  143         etherswitch_conf_t conf;
  144         etherswitch_info_t *info;
  145         etherswitch_reg_t *reg;
  146         etherswitch_phyreg_t *phyreg;
  147         etherswitch_portid_t *portid;
  148         int error = 0;
  149 
  150         switch (cmd) {
  151         case IOETHERSWITCHGETINFO:
  152                 info = ETHERSWITCH_GETINFO(etherswitch);
  153                 bcopy(info, data, sizeof(etherswitch_info_t));
  154                 break;
  155                 
  156         case IOETHERSWITCHGETREG:
  157                 reg = (etherswitch_reg_t *)data;
  158                 ETHERSWITCH_LOCK(etherswitch);
  159                 reg->val = ETHERSWITCH_READREG(etherswitch, reg->reg);
  160                 ETHERSWITCH_UNLOCK(etherswitch);
  161                 break;
  162         
  163         case IOETHERSWITCHSETREG:
  164                 reg = (etherswitch_reg_t *)data;
  165                 ETHERSWITCH_LOCK(etherswitch);
  166                 error = ETHERSWITCH_WRITEREG(etherswitch, reg->reg, reg->val);
  167                 ETHERSWITCH_UNLOCK(etherswitch);
  168                 break;
  169 
  170         case IOETHERSWITCHGETPORT:
  171                 error = ETHERSWITCH_GETPORT(etherswitch, (etherswitch_port_t *)data);
  172                 break;
  173 
  174         case IOETHERSWITCHSETPORT:
  175                 error = ETHERSWITCH_SETPORT(etherswitch, (etherswitch_port_t *)data);
  176                 break;
  177 
  178         case IOETHERSWITCHGETVLANGROUP:
  179                 error = ETHERSWITCH_GETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
  180                 break;
  181 
  182         case IOETHERSWITCHSETVLANGROUP:
  183                 error = ETHERSWITCH_SETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
  184                 break;
  185 
  186         case IOETHERSWITCHGETPHYREG:
  187                 phyreg = (etherswitch_phyreg_t *)data;
  188                 phyreg->val = ETHERSWITCH_READPHYREG(etherswitch, phyreg->phy, phyreg->reg);
  189                 break;
  190         
  191         case IOETHERSWITCHSETPHYREG:
  192                 phyreg = (etherswitch_phyreg_t *)data;
  193                 error = ETHERSWITCH_WRITEPHYREG(etherswitch, phyreg->phy, phyreg->reg, phyreg->val);
  194                 break;
  195 
  196         case IOETHERSWITCHGETCONF:
  197                 bzero(&conf, sizeof(etherswitch_conf_t));
  198                 error = ETHERSWITCH_GETCONF(etherswitch, &conf);
  199                 bcopy(&conf, data, sizeof(etherswitch_conf_t));
  200                 break;
  201 
  202         case IOETHERSWITCHSETCONF:
  203                 error = ETHERSWITCH_SETCONF(etherswitch, (etherswitch_conf_t *)data);
  204                 break;
  205 
  206         case IOETHERSWITCHFLUSHALL:
  207                 error = ETHERSWITCH_FLUSH_ALL(etherswitch);
  208                 break;
  209 
  210         case IOETHERSWITCHFLUSHPORT:
  211                 portid = (etherswitch_portid_t *)data;
  212                 error = ETHERSWITCH_FLUSH_PORT(etherswitch, portid->es_port);
  213                 break;
  214 
  215         case IOETHERSWITCHGETTABLE:
  216                 error = ETHERSWITCH_FETCH_TABLE(etherswitch, (void *) data);
  217                 break;
  218 
  219         case IOETHERSWITCHGETTABLEENTRY:
  220                 error = ETHERSWITCH_FETCH_TABLE_ENTRY(etherswitch, (void *) data);
  221                 break;
  222 
  223         default:
  224                 error = ENOTTY;
  225         }
  226 
  227         return (error);
  228 }
  229 
  230 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