acphy.c

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    1 /*-
    2  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to The NetBSD Foundation
    6  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    7  * NASA Ames Research Center.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /*-
   32  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   33  *
   34  * Redistribution and use in source and binary forms, with or without
   35  * modification, are permitted provided that the following conditions
   36  * are met:
   37  * 1. Redistributions of source code must retain the above copyright
   38  *    notice, this list of conditions and the following disclaimer.
   39  * 2. Redistributions in binary form must reproduce the above copyright
   40  *    notice, this list of conditions and the following disclaimer in the
   41  *    documentation and/or other materials provided with the distribution.
   42  *
   43  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   44  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   45  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   46  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   47  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   48  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   49  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   50  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   51  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   52  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   53  */
   54 
   55 #include <sys/cdefs.h>
   56 __FBSDID("$FreeBSD$");
   57 
   58 /*
   59  * Driver for Altima AC101 10/100 PHY
   60  */
   61 
   62 #include <sys/param.h>
   63 #include <sys/systm.h>
   64 #include <sys/kernel.h>
   65 #include <sys/socket.h>
   66 #include <sys/errno.h>
   67 #include <sys/module.h>
   68 #include <sys/bus.h>
   69 
   70 #include <net/if.h>
   71 #include <net/if_media.h>
   72 
   73 #include <dev/mii/mii.h>
   74 #include <dev/mii/miivar.h>
   75 #include "miidevs.h"
   76 
   77 #include <dev/mii/acphyreg.h>
   78 
   79 #include "miibus_if.h"
   80 
   81 static int acphy_probe(device_t);
   82 static int acphy_attach(device_t);
   83 
   84 static device_method_t acphy_methods[] = {
   85         /* device interface */
   86         DEVMETHOD(device_probe,         acphy_probe),
   87         DEVMETHOD(device_attach,        acphy_attach),
   88         DEVMETHOD(device_detach,        mii_phy_detach),
   89         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   90         DEVMETHOD_END
   91 };
   92 
   93 static devclass_t acphy_devclass;
   94 
   95 static driver_t acphy_driver = {
   96         "acphy",
   97         acphy_methods,
   98         sizeof(struct mii_softc)
   99 };
  100 
  101 DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0);
  102 
  103 static int      acphy_service(struct mii_softc *, struct mii_data *, int);
  104 static void     acphy_reset(struct mii_softc *);
  105 static void     acphy_status(struct mii_softc *);
  106 
  107 static const struct mii_phydesc acphys[] = {
  108         MII_PHY_DESC(ALTIMA, AC101),
  109         MII_PHY_DESC(ALTIMA, AC101L),
  110         /* XXX This is reported to work, but it's not from any data sheet. */
  111         MII_PHY_DESC(ALTIMA, ACXXX),
  112         MII_PHY_END
  113 };
  114 
  115 static const struct mii_phy_funcs acphy_funcs = {
  116         acphy_service,
  117         acphy_status,
  118         acphy_reset
  119 };
  120 
  121 static int
  122 acphy_probe(device_t dev)
  123 {
  124 
  125         return (mii_phy_dev_probe(dev, acphys, BUS_PROBE_DEFAULT));
  126 }
  127 
  128 static int
  129 acphy_attach(device_t dev)
  130 {
  131         struct mii_softc *sc;
  132 
  133         sc = device_get_softc(dev);
  134 
  135         mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &acphy_funcs, 0);
  136 
  137         PHY_RESET(sc);
  138 
  139         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
  140         device_printf(dev, " ");
  141 
  142 #define ADD(m, c)       ifmedia_add(&sc->mii_pdata->mii_media, (m), (c), NULL)
  143         if ((PHY_READ(sc, MII_ACPHY_MCTL) & AC_MCTL_FX_SEL) != 0) {
  144                 sc->mii_flags |= MIIF_HAVEFIBER;
  145                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
  146                     MII_MEDIA_100_TX);
  147                 printf("100baseFX, ");
  148                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
  149                     MII_MEDIA_100_TX_FDX);
  150                 printf("100baseFX-FDX, ");
  151         }
  152 #undef ADD
  153 
  154         mii_phy_add_media(sc);
  155         printf("\n");
  156 
  157         MIIBUS_MEDIAINIT(sc->mii_dev);
  158         return (0);
  159 }
  160 
  161 static int
  162 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  163 {
  164         int reg;
  165 
  166         switch (cmd) {
  167         case MII_POLLSTAT:
  168                 break;
  169 
  170         case MII_MEDIACHG:
  171                 /*
  172                  * If the interface is not up, don't do anything.
  173                  */
  174                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  175                         break;
  176 
  177                 /* Wake & deisolate up if necessary */
  178                 reg = PHY_READ(sc, MII_BMCR);
  179                 if (reg & (BMCR_ISO | BMCR_PDOWN))
  180                         PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN));
  181 
  182                 mii_phy_setmedia(sc);
  183                 break;
  184 
  185         case MII_TICK:
  186                 /*
  187                  * Is the interface even up?
  188                  */
  189                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  190                         return (0);
  191 
  192                 /*
  193                  * This PHY's autonegotiation doesn't need to be kicked.
  194                  */
  195                 break;
  196         }
  197 
  198         /* Update the media status. */
  199         PHY_STATUS(sc);
  200 
  201         /* Callback if something changed. */
  202         mii_phy_update(sc, cmd);
  203         return (0);
  204 }
  205 
  206 static void
  207 acphy_status(struct mii_softc *sc)
  208 {
  209         struct mii_data *mii = sc->mii_pdata;
  210         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  211         int bmsr, bmcr, diag;
  212 
  213         mii->mii_media_status = IFM_AVALID;
  214         mii->mii_media_active = IFM_ETHER;
  215 
  216         bmsr = PHY_READ(sc, MII_BMSR) |
  217             PHY_READ(sc, MII_BMSR);
  218         if (bmsr & BMSR_LINK)
  219                 mii->mii_media_status |= IFM_ACTIVE;
  220 
  221         bmcr = PHY_READ(sc, MII_BMCR);
  222         if (bmcr & BMCR_ISO) {
  223                 mii->mii_media_active |= IFM_NONE;
  224                 mii->mii_media_status = 0;
  225                 return;
  226         }
  227 
  228         if (bmcr & BMCR_LOOP)
  229                 mii->mii_media_active |= IFM_LOOP;
  230 
  231         if (bmcr & BMCR_AUTOEN) {
  232                 if ((bmsr & BMSR_ACOMP) == 0) {
  233                         /* Erg, still trying, I guess... */
  234                         mii->mii_media_active |= IFM_NONE;
  235                         return;
  236                 }
  237                 diag = PHY_READ(sc, MII_ACPHY_DIAG);
  238                 if (diag & AC_DIAG_SPEED)
  239                         mii->mii_media_active |= IFM_100_TX;
  240                 else
  241                         mii->mii_media_active |= IFM_10_T;
  242 
  243                 if (diag & AC_DIAG_DUPLEX)
  244                         mii->mii_media_active |=
  245                             IFM_FDX | mii_phy_flowstatus(sc);
  246                 else
  247                         mii->mii_media_active |= IFM_HDX;
  248         } else
  249                 mii->mii_media_active = ife->ifm_media;
  250 }
  251 
  252 static void
  253 acphy_reset(struct mii_softc *sc)
  254 {
  255 
  256         mii_phy_reset(sc);
  257         PHY_WRITE(sc, MII_ACPHY_INT, 0);
  258 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/acphy.c

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sys/dev/mii/acphy.c