jmphy.c

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    1 /*-
    2  * Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org>
    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 unmodified, this list of conditions, and the following
   10  *    disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/8.2/sys/dev/mii/jmphy.c 215882 2010-11-26 20:45:49Z marius $");
   30 
   31 /*
   32  * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY.
   33  */
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/kernel.h>
   38 #include <sys/module.h>
   39 #include <sys/socket.h>
   40 #include <sys/bus.h>
   41 
   42 #include <net/if.h>
   43 #include <net/if_media.h>
   44 
   45 #include <dev/mii/mii.h>
   46 #include <dev/mii/miivar.h>
   47 #include "miidevs.h"
   48 
   49 #include <dev/mii/jmphyreg.h>
   50 
   51 #include "miibus_if.h"
   52 
   53 static int      jmphy_probe(device_t);
   54 static int      jmphy_attach(device_t);
   55 static void     jmphy_reset(struct mii_softc *);
   56 static uint16_t jmphy_anar(struct ifmedia_entry *);
   57 static int      jmphy_setmedia(struct mii_softc *, struct ifmedia_entry *);
   58 
   59 struct jmphy_softc {
   60         struct mii_softc mii_sc;
   61         int mii_oui;
   62         int mii_model;
   63         int mii_rev;
   64 };
   65 
   66 static device_method_t jmphy_methods[] = {
   67         /* Device interface. */
   68         DEVMETHOD(device_probe,         jmphy_probe),
   69         DEVMETHOD(device_attach,        jmphy_attach),
   70         DEVMETHOD(device_detach,        mii_phy_detach),
   71         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   72         { NULL, NULL }
   73 };
   74 
   75 static devclass_t jmphy_devclass;
   76 static driver_t jmphy_driver = {
   77         "jmphy",
   78         jmphy_methods,
   79         sizeof(struct jmphy_softc)
   80 };
   81 
   82 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, 0, 0);
   83 
   84 static int      jmphy_service(struct mii_softc *, struct mii_data *, int);
   85 static void     jmphy_status(struct mii_softc *);
   86 
   87 static const struct mii_phydesc jmphys[] = {
   88         MII_PHY_DESC(JMICRON, JMP202),
   89         MII_PHY_DESC(JMICRON, JMP211),
   90         MII_PHY_END
   91 };
   92 
   93 static int
   94 jmphy_probe(device_t dev)
   95 {
   96 
   97         return (mii_phy_dev_probe(dev, jmphys, BUS_PROBE_DEFAULT));
   98 }
   99 
  100 static int
  101 jmphy_attach(device_t dev)
  102 {
  103         struct jmphy_softc *jsc;
  104         struct mii_softc *sc;
  105         struct mii_attach_args *ma;
  106         struct mii_data *mii;
  107 
  108         jsc = device_get_softc(dev);
  109         sc = &jsc->mii_sc;
  110         ma = device_get_ivars(dev);
  111         sc->mii_dev = device_get_parent(dev);
  112         mii = ma->mii_data;
  113         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  114 
  115         sc->mii_flags = miibus_get_flags(dev);
  116         sc->mii_inst = mii->mii_instance++;
  117         sc->mii_phy = ma->mii_phyno;
  118         sc->mii_service = jmphy_service;
  119         sc->mii_pdata = mii;
  120 
  121         jsc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
  122         jsc->mii_model = MII_MODEL(ma->mii_id2);
  123         jsc->mii_rev = MII_REV(ma->mii_id2);
  124         if (bootverbose)
  125                 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
  126                     jsc->mii_oui, jsc->mii_model, jsc->mii_rev);
  127 
  128         jmphy_reset(sc);
  129 
  130         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  131         if (sc->mii_capabilities & BMSR_EXTSTAT)
  132                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  133         device_printf(dev, " ");
  134         mii_phy_add_media(sc);
  135         printf("\n");
  136 
  137         MIIBUS_MEDIAINIT(sc->mii_dev);
  138         return (0);
  139 }
  140 
  141 static int
  142 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  143 {
  144         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  145 
  146         switch (cmd) {
  147         case MII_POLLSTAT:
  148                 break;
  149 
  150         case MII_MEDIACHG:
  151                 /*
  152                  * If the interface is not up, don't do anything.
  153                  */
  154                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  155                         break;
  156 
  157                 if (jmphy_setmedia(sc, ife) != EJUSTRETURN)
  158                         return (EINVAL);
  159                 break;
  160 
  161         case MII_TICK:
  162                 /*
  163                  * Is the interface even up?
  164                  */
  165                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  166                         return (0);
  167 
  168                 /*
  169                  * Only used for autonegotiation.
  170                  */
  171                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  172                         sc->mii_ticks = 0;
  173                         break;
  174                 }
  175 
  176                 /* Check for link. */
  177                 if ((PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) != 0) {
  178                         sc->mii_ticks = 0;
  179                         break;
  180                 }
  181 
  182                 /* Announce link loss right after it happens. */
  183                 if (sc->mii_ticks++ == 0)
  184                         break;
  185                 if (sc->mii_ticks <= sc->mii_anegticks)
  186                         return (0);
  187 
  188                 sc->mii_ticks = 0;
  189                 (void)jmphy_setmedia(sc, ife);
  190                 break;
  191         }
  192 
  193         /* Update the media status. */
  194         jmphy_status(sc);
  195 
  196         /* Callback if something changed. */
  197         mii_phy_update(sc, cmd);
  198         return (0);
  199 }
  200 
  201 static void
  202 jmphy_status(struct mii_softc *sc)
  203 {
  204         struct mii_data *mii = sc->mii_pdata;
  205         int bmcr, ssr;
  206 
  207         mii->mii_media_status = IFM_AVALID;
  208         mii->mii_media_active = IFM_ETHER;
  209 
  210         ssr = PHY_READ(sc, JMPHY_SSR);
  211         if ((ssr & JMPHY_SSR_LINK_UP) != 0)
  212                 mii->mii_media_status |= IFM_ACTIVE;
  213 
  214         bmcr = PHY_READ(sc, MII_BMCR);
  215         if ((bmcr & BMCR_ISO) != 0) {
  216                 mii->mii_media_active |= IFM_NONE;
  217                 mii->mii_media_status = 0;
  218                 return;
  219         }
  220 
  221         if ((bmcr & BMCR_LOOP) != 0)
  222                 mii->mii_media_active |= IFM_LOOP;
  223 
  224         if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) {
  225                 /* Erg, still trying, I guess... */
  226                 mii->mii_media_active |= IFM_NONE;
  227                 return;
  228         }
  229 
  230         switch ((ssr & JMPHY_SSR_SPEED_MASK)) {
  231         case JMPHY_SSR_SPEED_1000:
  232                 mii->mii_media_active |= IFM_1000_T;
  233                 /*
  234                  * jmphy(4) got a valid link so reset mii_ticks.
  235                  * Resetting mii_ticks is needed in order to
  236                  * detect link loss after auto-negotiation.
  237                  */
  238                 sc->mii_ticks = 0;
  239                 break;
  240         case JMPHY_SSR_SPEED_100:
  241                 mii->mii_media_active |= IFM_100_TX;
  242                 sc->mii_ticks = 0;
  243                 break;
  244         case JMPHY_SSR_SPEED_10:
  245                 mii->mii_media_active |= IFM_10_T;
  246                 sc->mii_ticks = 0;
  247                 break;
  248         default:
  249                 mii->mii_media_active |= IFM_NONE;
  250                 return;
  251         }
  252 
  253         if ((ssr & JMPHY_SSR_DUPLEX) != 0)
  254                 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
  255         else
  256                 mii->mii_media_active |= IFM_HDX;
  257 
  258         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
  259                 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0)
  260                         mii->mii_media_active |= IFM_ETH_MASTER;
  261         }
  262 }
  263 
  264 static void
  265 jmphy_reset(struct mii_softc *sc)
  266 {
  267         struct jmphy_softc *jsc;
  268         int i;
  269 
  270         jsc = (struct jmphy_softc *)sc;
  271 
  272         /* Disable sleep mode. */
  273         PHY_WRITE(sc, JMPHY_TMCTL,
  274             PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB);
  275         PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN);
  276 
  277         for (i = 0; i < 1000; i++) {
  278                 DELAY(1);
  279                 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0)
  280                         break;
  281         }
  282 }
  283 
  284 static uint16_t
  285 jmphy_anar(struct ifmedia_entry *ife)
  286 {
  287         uint16_t anar;
  288 
  289         anar = 0;
  290         switch (IFM_SUBTYPE(ife->ifm_media)) {
  291         case IFM_AUTO:
  292                 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10;
  293                 break;
  294         case IFM_1000_T:
  295                 break;
  296         case IFM_100_TX:
  297                 anar |= ANAR_TX | ANAR_TX_FD;
  298                 break;
  299         case IFM_10_T:
  300                 anar |= ANAR_10 | ANAR_10_FD;
  301                 break;
  302         default:
  303                 break;
  304         }
  305 
  306         return (anar);
  307 }
  308 
  309 static int
  310 jmphy_setmedia(struct mii_softc *sc, struct ifmedia_entry *ife)
  311 {
  312         uint16_t anar, bmcr, gig;
  313 
  314         gig = 0;
  315         bmcr = PHY_READ(sc, MII_BMCR);
  316         switch (IFM_SUBTYPE(ife->ifm_media)) {
  317         case IFM_AUTO:
  318                 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
  319                 break;
  320         case IFM_1000_T:
  321                 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
  322                 break;
  323         case IFM_100_TX:
  324         case IFM_10_T:
  325                 break;
  326         case IFM_NONE:
  327                 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN);
  328                 return (EJUSTRETURN);
  329         default:
  330                 return (EINVAL);
  331         }
  332 
  333         if ((ife->ifm_media & IFM_LOOP) != 0)
  334                 bmcr |= BMCR_LOOP;
  335 
  336         anar = jmphy_anar(ife);
  337         if (((IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO ||
  338             (ife->ifm_media & IFM_FDX) != 0) &&
  339             (ife->ifm_media & IFM_FLOW) != 0) ||
  340             (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
  341                 anar |= ANAR_PAUSE_TOWARDS;
  342 
  343         if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
  344                 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  345                         gig |= GTCR_MAN_MS;
  346                         if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
  347                                 gig |= GTCR_ADV_MS;
  348                 }
  349                 PHY_WRITE(sc, MII_100T2CR, gig);
  350         }
  351         PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
  352         PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
  353 
  354         return (EJUSTRETURN);
  355 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/jmphy.c

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sys/dev/mii/jmphy.c
