sys/dev/etherswitch/etherswitch.c

   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         int error = 0;
 148
 149         switch (cmd) {
 150         case IOETHERSWITCHGETINFO:
 151                 info = ETHERSWITCH_GETINFO(etherswitch);
 152                 bcopy(info, data, sizeof(etherswitch_info_t));
 153                 break;
 154
 155         case IOETHERSWITCHGETREG:
 156                 reg = (etherswitch_reg_t *)data;
 157                 ETHERSWITCH_LOCK(etherswitch);
 158                 reg->val = ETHERSWITCH_READREG(etherswitch, reg->reg);
 159                 ETHERSWITCH_UNLOCK(etherswitch);
 160                 break;
 161
 162         case IOETHERSWITCHSETREG:
 163                 reg = (etherswitch_reg_t *)data;
 164                 ETHERSWITCH_LOCK(etherswitch);
 165                 error = ETHERSWITCH_WRITEREG(etherswitch, reg->reg, reg->val);
 166                 ETHERSWITCH_UNLOCK(etherswitch);
 167                 break;
 168
 169         case IOETHERSWITCHGETPORT:
 170                 error = ETHERSWITCH_GETPORT(etherswitch, (etherswitch_port_t *)data);
 171                 break;
 172
 173         case IOETHERSWITCHSETPORT:
 174                 error = ETHERSWITCH_SETPORT(etherswitch, (etherswitch_port_t *)data);
 175                 break;
 176
 177         case IOETHERSWITCHGETVLANGROUP:
 178                 error = ETHERSWITCH_GETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
 179                 break;
 180
 181         case IOETHERSWITCHSETVLANGROUP:
 182                 error = ETHERSWITCH_SETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
 183                 break;
 184
 185         case IOETHERSWITCHGETPHYREG:
 186                 phyreg = (etherswitch_phyreg_t *)data;
 187                 phyreg->val = ETHERSWITCH_READPHYREG(etherswitch, phyreg->phy, phyreg->reg);
 188                 break;
 189
 190         case IOETHERSWITCHSETPHYREG:
 191                 phyreg = (etherswitch_phyreg_t *)data;
 192                 error = ETHERSWITCH_WRITEPHYREG(etherswitch, phyreg->phy, phyreg->reg, phyreg->val);
 193                 break;
 194
 195         case IOETHERSWITCHGETCONF:
 196                 bzero(&conf, sizeof(etherswitch_conf_t));
 197                 error = ETHERSWITCH_GETCONF(etherswitch, &conf);
 198                 bcopy(&conf, data, sizeof(etherswitch_conf_t));
 199                 break;
 200
 201         case IOETHERSWITCHSETCONF:
 202                 error = ETHERSWITCH_SETCONF(etherswitch, (etherswitch_conf_t *)data);
 203                 break;
 204
 205         default:
 206                 error = ENOTTY;
 207         }
 208
 209         return (error);
 210 }
 211
 212 MODULE_VERSION(etherswitch, 1);