sys/dev/etherswitch/etherswitch.c

   1 /*-
   2  * Copyright (c) 2011-2012 Stefan Bethke.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/bus.h>
  31 #include <sys/conf.h>
  32 #include <sys/fcntl.h>
  33 #include <sys/kernel.h>
  34 #include <sys/malloc.h>
  35 #include <sys/module.h>
  36 #include <sys/socket.h>
  37 #include <sys/sx.h>
  38 #include <sys/systm.h>
  39 #include <sys/uio.h>
  40
  41 #include <net/if.h>
  42
  43 #include <dev/etherswitch/etherswitch.h>
  44
  45 #include "etherswitch_if.h"
  46
  47 struct etherswitch_softc {
  48         device_t sc_dev;
  49         struct cdev *sc_devnode;
  50 };
  51
  52 static int etherswitch_probe(device_t);
  53 static int etherswitch_attach(device_t);
  54 static int etherswitch_detach(device_t);
  55 static void etherswitch_identify(driver_t *driver, device_t parent);
  56
  57 devclass_t etherswitch_devclass;
  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         struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
 103
 104         sc->sc_dev = dev;
 105         sc->sc_devnode = make_dev(&etherswitch_cdevsw, device_get_unit(dev),
 106                         UID_ROOT, GID_WHEEL,
 107                         0600, "etherswitch%d", device_get_unit(dev));
 108         if (sc->sc_devnode == NULL) {
 109                 device_printf(dev, "failed to create character device\n");
 110                 return (ENXIO);
 111         }
 112         sc->sc_devnode->si_drv1 = sc;
 113
 114         return (0);
 115 }
 116
 117 static int
 118 etherswitch_detach(device_t dev)
 119 {
 120         struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
 121
 122         if (sc->sc_devnode)
 123                 destroy_dev(sc->sc_devnode);
 124
 125         return (0);
 126 }
 127
 128 static int
 129 etherswitchioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flags, struct thread *td)
 130 {
 131         struct etherswitch_softc *sc = cdev->si_drv1;
 132         device_t dev = sc->sc_dev;
 133         device_t etherswitch = device_get_parent(dev);
 134         etherswitch_conf_t conf;
 135         etherswitch_info_t *info;
 136         etherswitch_reg_t *reg;
 137         etherswitch_phyreg_t *phyreg;
 138         int error = 0;
 139
 140         switch (cmd) {
 141         case IOETHERSWITCHGETINFO:
 142                 info = ETHERSWITCH_GETINFO(etherswitch);
 143                 bcopy(info, data, sizeof(etherswitch_info_t));
 144                 break;
 145
 146         case IOETHERSWITCHGETREG:
 147                 reg = (etherswitch_reg_t *)data;
 148                 ETHERSWITCH_LOCK(etherswitch);
 149                 reg->val = ETHERSWITCH_READREG(etherswitch, reg->reg);
 150                 ETHERSWITCH_UNLOCK(etherswitch);
 151                 break;
 152
 153         case IOETHERSWITCHSETREG:
 154                 reg = (etherswitch_reg_t *)data;
 155                 ETHERSWITCH_LOCK(etherswitch);
 156                 error = ETHERSWITCH_WRITEREG(etherswitch, reg->reg, reg->val);
 157                 ETHERSWITCH_UNLOCK(etherswitch);
 158                 break;
 159
 160         case IOETHERSWITCHGETPORT:
 161                 error = ETHERSWITCH_GETPORT(etherswitch, (etherswitch_port_t *)data);
 162                 break;
 163
 164         case IOETHERSWITCHSETPORT:
 165                 error = ETHERSWITCH_SETPORT(etherswitch, (etherswitch_port_t *)data);
 166                 break;
 167
 168         case IOETHERSWITCHGETVLANGROUP:
 169                 error = ETHERSWITCH_GETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
 170                 break;
 171
 172         case IOETHERSWITCHSETVLANGROUP:
 173                 error = ETHERSWITCH_SETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
 174                 break;
 175
 176         case IOETHERSWITCHGETPHYREG:
 177                 phyreg = (etherswitch_phyreg_t *)data;
 178                 phyreg->val = ETHERSWITCH_READPHYREG(etherswitch, phyreg->phy, phyreg->reg);
 179                 break;
 180
 181         case IOETHERSWITCHSETPHYREG:
 182                 phyreg = (etherswitch_phyreg_t *)data;
 183                 error = ETHERSWITCH_WRITEPHYREG(etherswitch, phyreg->phy, phyreg->reg, phyreg->val);
 184                 break;
 185
 186         case IOETHERSWITCHGETCONF:
 187                 bzero(&conf, sizeof(etherswitch_conf_t));
 188                 error = ETHERSWITCH_GETCONF(etherswitch, &conf);
 189                 bcopy(&conf, data, sizeof(etherswitch_conf_t));
 190                 break;
 191
 192         case IOETHERSWITCHSETCONF:
 193                 error = ETHERSWITCH_SETCONF(etherswitch, (etherswitch_conf_t *)data);
 194                 break;
 195
 196         default:
 197                 error = ENOTTY;
 198         }
 199
 200         return (error);
 201 }
 202
 203 MODULE_VERSION(etherswitch, 1);