xmphy.c

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    1 /*-
    2  * Copyright (c) 2000
    3  *      Bill Paul <wpaul@ee.columbia.edu>.  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  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by Bill Paul.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/8.4/sys/dev/mii/xmphy.c 230718 2012-01-29 01:35:14Z marius $");
   35 
   36 /*
   37  * driver for the XaQti XMAC II's internal PHY. This is sort of
   38  * like a 10/100 PHY, except the only thing we're really autoselecting
   39  * here is full/half duplex. Speed is always 1000mbps.
   40  */
   41 
   42 #include <sys/param.h>
   43 #include <sys/systm.h>
   44 #include <sys/kernel.h>
   45 #include <sys/module.h>
   46 #include <sys/socket.h>
   47 #include <sys/bus.h>
   48 
   49 #include <net/if.h>
   50 #include <net/if_media.h>
   51 
   52 #include <dev/mii/mii.h>
   53 #include <dev/mii/miivar.h>
   54 #include "miidevs.h"
   55 
   56 #include <dev/mii/xmphyreg.h>
   57 
   58 #include "miibus_if.h"
   59 
   60 static int xmphy_probe(device_t);
   61 static int xmphy_attach(device_t);
   62 
   63 static device_method_t xmphy_methods[] = {
   64         /* device interface */
   65         DEVMETHOD(device_probe,         xmphy_probe),
   66         DEVMETHOD(device_attach,        xmphy_attach),
   67         DEVMETHOD(device_detach,        mii_phy_detach),
   68         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   69         DEVMETHOD_END
   70 };
   71 
   72 static devclass_t xmphy_devclass;
   73 
   74 static driver_t xmphy_driver = {
   75         "xmphy",
   76         xmphy_methods,
   77         sizeof(struct mii_softc)
   78 };
   79 
   80 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0);
   81 
   82 static int      xmphy_service(struct mii_softc *, struct mii_data *, int);
   83 static void     xmphy_status(struct mii_softc *);
   84 static int      xmphy_mii_phy_auto(struct mii_softc *);
   85 
   86 static const struct mii_phydesc xmphys[] = {
   87         { MII_OUI_xxXAQTI, MII_MODEL_XAQTI_XMACII, MII_STR_XAQTI_XMACII },
   88         MII_PHY_DESC(JATO, BASEX),
   89         MII_PHY_END
   90 };
   91 
   92 static int
   93 xmphy_probe(device_t dev)
   94 {
   95 
   96         return (mii_phy_dev_probe(dev, xmphys, BUS_PROBE_DEFAULT));
   97 }
   98 
   99 static int
  100 xmphy_attach(device_t dev)
  101 {
  102         struct mii_softc *sc;
  103         struct mii_attach_args *ma;
  104         struct mii_data *mii;
  105         const char *sep = "";
  106 
  107         sc = device_get_softc(dev);
  108         ma = device_get_ivars(dev);
  109         sc->mii_dev = device_get_parent(dev);
  110         mii = ma->mii_data;
  111         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  112 
  113         sc->mii_flags = miibus_get_flags(dev);
  114         sc->mii_inst = mii->mii_instance++;
  115         sc->mii_phy = ma->mii_phyno;
  116         sc->mii_service = xmphy_service;
  117         sc->mii_pdata = mii;
  118 
  119         sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOMANPAUSE;
  120         sc->mii_anegticks = MII_ANEGTICKS;
  121 
  122         mii_phy_reset(sc);
  123 
  124 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  125 #define PRINT(s)        printf("%s%s", sep, s); sep = ", "
  126 
  127         device_printf(dev, " ");
  128         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst),
  129             XMPHY_BMCR_FDX);
  130         PRINT("1000baseSX");
  131         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0);
  132         PRINT("1000baseSX-FDX");
  133         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
  134         PRINT("auto");
  135 
  136         printf("\n");
  137 
  138 #undef ADD
  139 #undef PRINT
  140 
  141         MIIBUS_MEDIAINIT(sc->mii_dev);
  142         return (0);
  143 }
  144 
  145 static int
  146 xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  147 {
  148         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  149         int reg;
  150 
  151         switch (cmd) {
  152         case MII_POLLSTAT:
  153                 break;
  154 
  155         case MII_MEDIACHG:
  156                 /*
  157                  * If the interface is not up, don't do anything.
  158                  */
  159                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  160                         break;
  161 
  162                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  163                 case IFM_AUTO:
  164 #ifdef foo
  165                         /*
  166                          * If we're already in auto mode, just return.
  167                          */
  168                         if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
  169                                 return (0);
  170 #endif
  171                         (void)xmphy_mii_phy_auto(sc);
  172                         break;
  173                 case IFM_1000_SX:
  174                         mii_phy_reset(sc);
  175                         if ((ife->ifm_media & IFM_FDX) != 0) {
  176                                 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
  177                                 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
  178                         } else {
  179                                 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
  180                                 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
  181                         }
  182                         break;
  183                 default:
  184                         return (EINVAL);
  185                 }
  186                 break;
  187 
  188         case MII_TICK:
  189                 /*
  190                  * Is the interface even up?
  191                  */
  192                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  193                         return (0);
  194 
  195                 /*
  196                  * Only used for autonegotiation.
  197                  */
  198                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  199                         break;
  200 
  201                 /*
  202                  * Check to see if we have link.  If we do, we don't
  203                  * need to restart the autonegotiation process.  Read
  204                  * the BMSR twice in case it's latched.
  205                  */
  206                 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  207                 if (reg & BMSR_LINK)
  208                         break;
  209 
  210                 /* Only retry autonegotiation every mii_anegticks seconds. */
  211                 if (sc->mii_ticks <= sc->mii_anegticks)
  212                         break;
  213 
  214                 sc->mii_ticks = 0;
  215 
  216                 mii_phy_reset(sc);
  217                 xmphy_mii_phy_auto(sc);
  218                 return (0);
  219         }
  220 
  221         /* Update the media status. */
  222         xmphy_status(sc);
  223 
  224         /* Callback if something changed. */
  225         mii_phy_update(sc, cmd);
  226         return (0);
  227 }
  228 
  229 static void
  230 xmphy_status(struct mii_softc *sc)
  231 {
  232         struct mii_data *mii = sc->mii_pdata;
  233         int bmsr, bmcr, anlpar;
  234 
  235         mii->mii_media_status = IFM_AVALID;
  236         mii->mii_media_active = IFM_ETHER;
  237 
  238         bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
  239             PHY_READ(sc, XMPHY_MII_BMSR);
  240         if (bmsr & XMPHY_BMSR_LINK)
  241                 mii->mii_media_status |= IFM_ACTIVE;
  242 
  243         /* Do dummy read of extended status register. */
  244         bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
  245 
  246         bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
  247 
  248         if (bmcr & XMPHY_BMCR_LOOP)
  249                 mii->mii_media_active |= IFM_LOOP;
  250 
  251         if (bmcr & XMPHY_BMCR_AUTOEN) {
  252                 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
  253                         if (bmsr & XMPHY_BMSR_LINK) {
  254                                 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
  255                                 return;
  256                         }
  257                         /* Erg, still trying, I guess... */
  258                         mii->mii_media_active |= IFM_NONE;
  259                         return;
  260                 }
  261 
  262                 mii->mii_media_active |= IFM_1000_SX;
  263                 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
  264                     PHY_READ(sc, XMPHY_MII_ANLPAR);
  265                 if (anlpar & XMPHY_ANLPAR_FDX)
  266                         mii->mii_media_active |= IFM_FDX;
  267                 else
  268                         mii->mii_media_active |= IFM_HDX;
  269                 return;
  270         }
  271 
  272         mii->mii_media_active |= IFM_1000_SX;
  273         if (bmcr & XMPHY_BMCR_FDX)
  274                 mii->mii_media_active |= IFM_FDX;
  275         else
  276                 mii->mii_media_active |= IFM_HDX;
  277 }
  278 
  279 static int
  280 xmphy_mii_phy_auto(struct mii_softc *mii)
  281 {
  282         int anar = 0;
  283 
  284         anar = PHY_READ(mii, XMPHY_MII_ANAR);
  285         anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX;
  286         PHY_WRITE(mii, XMPHY_MII_ANAR, anar);
  287         DELAY(1000);
  288         PHY_WRITE(mii, XMPHY_MII_BMCR,
  289             XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
  290 
  291         return (EJUSTRETURN);
  292 }
Cache object: 63ff3907f6cec28e802a3996adc93b60
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/xmphy.c

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