root/dev/mii/bmtphy.c

DEFINITIONS

1. bmtphymatch
2. bmtphyattach
3. bmtphy_service
4. bmtphy_status
5. bmtphy_reset

    1 /*      $OpenBSD: bmtphy.c,v 1.16 2006/12/27 19:11:08 kettenis Exp $    */
    2 /*      $NetBSD: bmtphy.c,v 1.17 2005/01/17 13:17:45 scw Exp $  */
    4 /*-
    5  * Copyright (c) 2001 Theo de Raadt
    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 REGENTS 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 REGENTS 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  */
   29 /*
   30  * Driver for Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs.  This also
   31  * drives the PHY on the 3Com 3c905C.  The 3c905C's PHY is described in
   32  * the 3c905C data sheet.
   33  */
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/kernel.h>
   38 #include <sys/device.h>
   39 #include <sys/socket.h>
   40 #include <sys/errno.h>
   42 #include <net/if.h>
   43 #include <net/if_media.h>
   45 #include <dev/mii/mii.h>
   46 #include <dev/mii/miivar.h>
   47 #include <dev/mii/miidevs.h>
   49 #include <dev/mii/bmtphyreg.h>
   51 int     bmtphymatch(struct device *, void *, void *);
   52 void    bmtphyattach(struct device *, struct device *, void *);
   54 struct cfattach bmtphy_ca = {
   55         sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach,
mii_phy_activate
   57 };
   59 struct cfdriver bmtphy_cd = {
NULL, "bmtphy", DV_DULL
   61 };
   63 int     bmtphy_service(struct mii_softc *, struct mii_data *, int);
   64 void    bmtphy_status(struct mii_softc *);
   65 void    bmtphy_reset(struct mii_softc *);
   67 const struct mii_phy_funcs bmtphy_funcs = {
bmtphy_service, bmtphy_status, bmtphy_reset,
   69 };
   71 static const struct mii_phydesc bmtphys[] = {
   72         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_3C905B,
MII_STR_BROADCOM_3C905B },
   74         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_3C905C,
MII_STR_BROADCOM_3C905C },
   76         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_BCM4401,
MII_STR_BROADCOM_BCM4401 },
   78         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_BCM5201,
MII_STR_BROADCOM_BCM5201 },
   80         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_BCM5214,
MII_STR_BROADCOM_BCM5214 },
   82         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_BCM5220,
MII_STR_BROADCOM_BCM5220 },
   84         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_BCM5221,
MII_STR_BROADCOM_BCM5221 },
   86         { MII_OUI_BROADCOM,             MII_MODEL_BROADCOM_BCM5222,
MII_STR_BROADCOM_BCM5222 },
   89         { 0,                            0,
NULL },
   91 };
   93 int
bmtphymatch(struct device *parent, void *match, void *aux)
   95 {
   96         struct mii_attach_args *ma = aux;
   98         if (mii_phy_match(ma, bmtphys) != NULL)
   99                 return (10);
  101         return (0);
  102 }
  104 void
bmtphyattach(struct device *parent, struct device *self, void *aux)
  106 {
  107         struct mii_softc *sc = (struct mii_softc *)self;
  108         struct mii_attach_args *ma = aux;
  109         struct mii_data *mii = ma->mii_data;
  110         const struct mii_phydesc *mpd;
mpd = mii_phy_match(ma, bmtphys);
printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
sc->mii_model = MII_MODEL(ma->mii_id2);
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_funcs = &bmtphy_funcs;
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_anegticks = MII_ANEGTICKS;
PHY_RESET(sc);
  125         /*
  126          * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER?
  127          */
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  131         if (sc->mii_capabilities & BMSR_MEDIAMASK)
mii_phy_add_media(sc);
  133 }
  135 int
bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  137 {
  138         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  139         int reg;
  141         if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
  142                 return (ENXIO);
  144         switch (cmd) {
  145         case MII_POLLSTAT:
  146                 /*
  147                  * If we're not polling our PHY instance, just return.
  148                  */
  149                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  150                         return (0);
  151                 break;
  153         case MII_MEDIACHG:
  154                 /*
  155                  * If the media indicates a different PHY instance,
  156                  * isolate ourselves.
  157                  */
  158                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
reg = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  161                         return (0);
  162                 }
  164                 /*
  165                  * If the interface is not up, don't do anything.
  166                  */
  167                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  168                         break;
mii_phy_setmedia(sc);
  171                 break;
  173         case MII_TICK:
  174                 /*
  175                  * If we're not currently selected, just return.
  176                  */
  177                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  178                         return (0);
  180                 if (mii_phy_tick(sc) == EJUSTRETURN)
  181                         return (0);
  182                 break;
  184         case MII_DOWN:
mii_phy_down(sc);
  186                 return (0);
  187         }
  189         /* Update the media status. */
mii_phy_status(sc);
  192         /* Callback if something changed. */
mii_phy_update(sc, cmd);
  194         return (0);
  195 }
  197 void
bmtphy_status(struct mii_softc *sc)
  199 {
  200         struct mii_data *mii = sc->mii_pdata;
  201         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  202         int bmsr, bmcr, aux_csr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  208         if (bmsr & BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, MII_BMCR);
  212         if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
  215                 return;
  216         }
  218         if (bmcr & BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
  221         if (bmcr & BMCR_AUTOEN) {
  222                 /*
  223                  * The later are only valid if autonegotiation
  224                  * has completed (or it's disabled).
  225                  */
  226                 if ((bmsr & BMSR_ACOMP) == 0) {
  227                         /* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
  229                         return;
  230                 }
aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR);
  233                 if (aux_csr & AUX_CSR_SPEED)
mii->mii_media_active |= IFM_100_TX;
  235                 else
mii->mii_media_active |= IFM_10_T;
  238                 if (aux_csr & AUX_CSR_FDX)
mii->mii_media_active |= IFM_FDX;
  240                 else
mii->mii_media_active |= IFM_HDX;
  242         } else
mii->mii_media_active = ife->ifm_media;
  244 }
  246 void
bmtphy_reset(struct mii_softc *sc)
  248 {
u_int16_t data;
mii_phy_reset(sc);
  253         if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) {
  254                 /* Enable shadow register mode */
data = PHY_READ(sc, 0x1f);
PHY_WRITE(sc, 0x1f, data | 0x0080);
  258                 /* Enable APD (Auto PowerDetect) */
data = PHY_READ(sc, MII_BMTPHY_AUX2);
PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020);
  262                 /* Enable clocks across APD for
  263                  * Auto-MDIX functionality */
data = PHY_READ(sc, MII_BMTPHY_INTR);
PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004);
  267                 /* Disable shadow register mode */
data = PHY_READ(sc, 0x1f);
PHY_WRITE(sc, 0x1f, data & ~0x0080);
  270         }
  271 }