qsphy.c

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    1 /*      $NetBSD: qsphy.c,v 1.32 2003/04/29 01:49:34 thorpej Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    9  * NASA Ames Research Center.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *      This product includes software developed by the NetBSD
   22  *      Foundation, Inc. and its contributors.
   23  * 4. Neither the name of The NetBSD Foundation nor the names of its
   24  *    contributors may be used to endorse or promote products derived
   25  *    from this software without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   37  * POSSIBILITY OF SUCH DAMAGE.
   38  */
   39  
   40 /*
   41  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   42  *
   43  * Redistribution and use in source and binary forms, with or without
   44  * modification, are permitted provided that the following conditions
   45  * are met:
   46  * 1. Redistributions of source code must retain the above copyright
   47  *    notice, this list of conditions and the following disclaimer.
   48  * 2. Redistributions in binary form must reproduce the above copyright
   49  *    notice, this list of conditions and the following disclaimer in the
   50  *    documentation and/or other materials provided with the distribution.
   51  * 3. All advertising materials mentioning features or use of this software
   52  *    must display the following acknowledgement:
   53  *      This product includes software developed by Manuel Bouyer.
   54  * 4. The name of the author may not be used to endorse or promote products
   55  *    derived from this software without specific prior written permission.
   56  *
   57  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   60  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   61  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   62  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   66  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   67  */
   68 
   69 /*
   70  * driver for Quality Semiconductor's QS6612 ethernet 10/100 PHY
   71  * datasheet from www.qualitysemi.com
   72  */
   73 
   74 #include <sys/cdefs.h>
   75 __KERNEL_RCSID(0, "$NetBSD: qsphy.c,v 1.32 2003/04/29 01:49:34 thorpej Exp $");
   76 
   77 #include <sys/param.h>
   78 #include <sys/systm.h>
   79 #include <sys/kernel.h>
   80 #include <sys/device.h>
   81 #include <sys/socket.h>
   82 
   83 #include <net/if.h>
   84 #include <net/if_media.h>
   85 
   86 #include <dev/mii/mii.h>
   87 #include <dev/mii/miivar.h>
   88 #include <dev/mii/miidevs.h>
   89 
   90 #include <dev/mii/qsphyreg.h>
   91 
   92 int     qsphymatch(struct device *, struct cfdata *, void *);
   93 void    qsphyattach(struct device *, struct device *, void *);
   94 
   95 CFATTACH_DECL(qsphy, sizeof(struct mii_softc),
   96     qsphymatch, qsphyattach, mii_phy_detach, mii_phy_activate);
   97 
   98 int     qsphy_service(struct mii_softc *, struct mii_data *, int);
   99 void    qsphy_status(struct mii_softc *);
  100 void    qsphy_reset(struct mii_softc *);
  101 
  102 const struct mii_phy_funcs qsphy_funcs = {
  103         qsphy_service, qsphy_status, qsphy_reset,
  104 };
  105 
  106 const struct mii_phydesc qsphys[] = {
  107         { MII_OUI_xxQUALSEMI,           MII_MODEL_xxQUALSEMI_QS6612,
  108           MII_STR_xxQUALSEMI_QS6612 },
  109 
  110         { 0,                            0,
  111           NULL },
  112 };
  113 
  114 int
  115 qsphymatch(struct device *parent, struct cfdata *match, void *aux)
  116 {
  117         struct mii_attach_args *ma = aux;
  118         
  119         if (mii_phy_match(ma, qsphys) != NULL)
  120                 return (10);
  121 
  122         return (0);
  123 }
  124 
  125 void
  126 qsphyattach(struct device *parent, struct device *self, void *aux)
  127 {
  128         struct mii_softc *sc = (struct mii_softc *)self;
  129         struct mii_attach_args *ma = aux;
  130         struct mii_data *mii = ma->mii_data;
  131         const struct mii_phydesc *mpd;
  132 
  133         mpd = mii_phy_match(ma, qsphys);
  134         aprint_naive(": Media interface\n");
  135         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
  136 
  137         sc->mii_inst = mii->mii_instance;
  138         sc->mii_phy = ma->mii_phyno;
  139         sc->mii_funcs = &qsphy_funcs;
  140         sc->mii_pdata = mii;
  141         sc->mii_flags = ma->mii_flags;
  142         sc->mii_anegticks = 5;
  143 
  144         PHY_RESET(sc);
  145 
  146         sc->mii_capabilities =
  147             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  148         aprint_normal("%s: ", sc->mii_dev.dv_xname);
  149         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  150                 aprint_error("no media present");
  151         else
  152                 mii_phy_add_media(sc);
  153         aprint_normal("\n");
  154 }
  155 
  156 int
  157 qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  158 {
  159         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  160         int reg;
  161 
  162         if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
  163                 return (ENXIO);
  164 
  165         switch (cmd) {
  166         case MII_POLLSTAT:
  167                 /*
  168                  * If we're not polling our PHY instance, just return.
  169                  */
  170                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  171                         return (0);
  172                 break;
  173 
  174         case MII_MEDIACHG:
  175                 /*
  176                  * If the media indicates a different PHY instance,
  177                  * isolate ourselves.
  178                  */
  179                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  180                         reg = PHY_READ(sc, MII_BMCR);
  181                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  182                         return (0);
  183                 }
  184 
  185                 /*
  186                  * If the interface is not up, don't do anything.
  187                  */
  188                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  189                         break;
  190 
  191                 mii_phy_setmedia(sc);
  192                 break;
  193 
  194         case MII_TICK:
  195                 /*
  196                  * If we're not currently selected, just return.
  197                  */
  198                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  199                         return (0);
  200 
  201                 if (mii_phy_tick(sc) == EJUSTRETURN)
  202                         return (0);
  203                 break;
  204 
  205         case MII_DOWN:
  206                 mii_phy_down(sc);
  207                 return (0);
  208         }
  209 
  210         /* Update the media status. */
  211         mii_phy_status(sc);
  212 
  213         /* Callback if something changed. */
  214         mii_phy_update(sc, cmd);
  215         return (0);
  216 }
  217 
  218 void
  219 qsphy_status(struct mii_softc *sc)
  220 {
  221         struct mii_data *mii = sc->mii_pdata;
  222         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  223         int bmsr, bmcr, pctl;
  224 
  225         mii->mii_media_status = IFM_AVALID;
  226         mii->mii_media_active = IFM_ETHER;
  227 
  228         bmsr = PHY_READ(sc, MII_BMSR) |
  229             PHY_READ(sc, MII_BMSR);
  230         if (bmsr & BMSR_LINK)
  231                 mii->mii_media_status |= IFM_ACTIVE;
  232 
  233         bmcr = PHY_READ(sc, MII_BMCR);
  234         if (bmcr & BMCR_ISO) {
  235                 mii->mii_media_active |= IFM_NONE;
  236                 mii->mii_media_status = 0;
  237                 return;
  238         }
  239 
  240         if (bmcr & BMCR_LOOP)
  241                 mii->mii_media_active |= IFM_LOOP;
  242 
  243         if (bmcr & BMCR_AUTOEN) {
  244                 if ((bmsr & BMSR_ACOMP) == 0) {
  245                         /* Erg, still trying, I guess... */
  246                         mii->mii_media_active |= IFM_NONE;
  247                         return;
  248                 }
  249                 pctl = PHY_READ(sc, MII_QSPHY_PCTL) |
  250                     PHY_READ(sc, MII_QSPHY_PCTL);
  251                 switch (pctl & PCTL_OPMASK) {
  252                 case PCTL_10_T:
  253                         mii->mii_media_active |= IFM_10_T;
  254                         break;
  255                 case PCTL_10_T_FDX:
  256                         mii->mii_media_active |= IFM_10_T|IFM_FDX;
  257                         break;
  258                 case PCTL_100_TX:
  259                         mii->mii_media_active |= IFM_100_TX;
  260                         break;
  261                 case PCTL_100_TX_FDX:
  262                         mii->mii_media_active |= IFM_100_TX|IFM_FDX;
  263                         break;
  264                 case PCTL_100_T4:
  265                         mii->mii_media_active |= IFM_100_T4;
  266                         break;
  267                 default:
  268                         /* Erg... this shouldn't happen. */
  269                         mii->mii_media_active |= IFM_NONE;
  270                         break;
  271                 }
  272         } else
  273                 mii->mii_media_active = ife->ifm_media;
  274 }
  275 
  276 void
  277 qsphy_reset(struct mii_softc *sc)
  278 {
  279 
  280         mii_phy_reset(sc);
  281         PHY_WRITE(sc, MII_QSPHY_IMASK, 0);
  282 }
Cache object: ae4019a7d2d04541f550fe202efad548
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/qsphy.c

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