mii_physubr.c

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    1 /*      $NetBSD: mii_physubr.c,v 1.5 1999/08/03 19:41:49 drochner Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999, 2000, 2001 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  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   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 THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/8.2/sys/dev/mii/mii_physubr.c 215881 2010-11-26 20:37:19Z marius $");
   35 
   36 /*
   37  * Subroutines common to all PHYs.
   38  */
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/kernel.h>
   43 #include <sys/socket.h>
   44 #include <sys/errno.h>
   45 #include <sys/module.h>
   46 #include <sys/bus.h>
   47 
   48 #include <net/if.h>
   49 #include <net/if_media.h>
   50 
   51 #include <dev/mii/mii.h>
   52 #include <dev/mii/miivar.h>
   53 
   54 #include "miibus_if.h"
   55 
   56 /*
   57  * Media to register setting conversion table.  Order matters.
   58  */
   59 const struct mii_media mii_media_table[MII_NMEDIA] = {
   60         /* None */
   61         { BMCR_ISO,             ANAR_CSMA,
   62           0, },
   63 
   64         /* 10baseT */
   65         { BMCR_S10,             ANAR_CSMA|ANAR_10,
   66           0, },
   67 
   68         /* 10baseT-FDX */
   69         { BMCR_S10|BMCR_FDX,    ANAR_CSMA|ANAR_10_FD,
   70           0, },
   71 
   72         /* 100baseT4 */
   73         { BMCR_S100,            ANAR_CSMA|ANAR_T4,
   74           0, },
   75 
   76         /* 100baseTX */
   77         { BMCR_S100,            ANAR_CSMA|ANAR_TX,
   78           0, },
   79 
   80         /* 100baseTX-FDX */
   81         { BMCR_S100|BMCR_FDX,   ANAR_CSMA|ANAR_TX_FD,
   82           0, },
   83 
   84         /* 1000baseX */
   85         { BMCR_S1000,           ANAR_CSMA,
   86           0, },
   87 
   88         /* 1000baseX-FDX */
   89         { BMCR_S1000|BMCR_FDX,  ANAR_CSMA,
   90           0, },
   91 
   92         /* 1000baseT */
   93         { BMCR_S1000,           ANAR_CSMA,
   94           GTCR_ADV_1000THDX },
   95 
   96         /* 1000baseT-FDX */
   97         { BMCR_S1000,           ANAR_CSMA,
   98           GTCR_ADV_1000TFDX },
   99 };
  100 
  101 void
  102 mii_phy_setmedia(struct mii_softc *sc)
  103 {
  104         struct mii_data *mii = sc->mii_pdata;
  105         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  106         int bmcr, anar, gtcr;
  107 
  108         if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) {
  109                 /*
  110                  * Force renegotiation if MIIF_DOPAUSE or MIIF_FORCEANEG.
  111                  * The former is necessary as we might switch from flow-
  112                  * control advertisment being off to on or vice versa.
  113                  */
  114                 if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0 ||
  115                     (sc->mii_flags & (MIIF_DOPAUSE | MIIF_FORCEANEG)) != 0)
  116                         (void)mii_phy_auto(sc);
  117                 return;
  118         }
  119 
  120         /*
  121          * Table index is stored in the media entry.
  122          */
  123 
  124         KASSERT(ife->ifm_data >=0 && ife->ifm_data < MII_NMEDIA,
  125             ("invalid ife->ifm_data (0x%x) in mii_phy_setmedia",
  126             ife->ifm_data));
  127 
  128         anar = mii_media_table[ife->ifm_data].mm_anar;
  129         bmcr = mii_media_table[ife->ifm_data].mm_bmcr;
  130         gtcr = mii_media_table[ife->ifm_data].mm_gtcr;
  131 
  132         if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  133                 gtcr |= GTCR_MAN_MS;
  134                 if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
  135                         gtcr |= GTCR_ADV_MS;
  136         }
  137 
  138         if ((ife->ifm_media & IFM_GMASK) == (IFM_FDX | IFM_FLOW) ||
  139             (sc->mii_flags & MIIF_FORCEPAUSE) != 0) {
  140                 if ((sc->mii_flags & MIIF_IS_1000X) != 0)
  141                         anar |= ANAR_X_PAUSE_TOWARDS;
  142                 else {
  143                         anar |= ANAR_FC;
  144                         /* XXX Only 1000BASE-T has PAUSE_ASYM? */
  145                         if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0 &&
  146                             (sc->mii_extcapabilities &
  147                             (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0)
  148                                 anar |= ANAR_X_PAUSE_ASYM;
  149                 }
  150         }
  151 
  152         if ((ife->ifm_media & IFM_LOOP) != 0)
  153                 bmcr |= BMCR_LOOP;
  154 
  155         PHY_WRITE(sc, MII_ANAR, anar);
  156         PHY_WRITE(sc, MII_BMCR, bmcr);
  157         if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0)
  158                 PHY_WRITE(sc, MII_100T2CR, gtcr);
  159 }
  160 
  161 int
  162 mii_phy_auto(struct mii_softc *sc)
  163 {
  164         struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
  165         int anar, gtcr;
  166 
  167         /*
  168          * Check for 1000BASE-X.  Autonegotiation is a bit
  169          * different on such devices.
  170          */
  171         if ((sc->mii_flags & MIIF_IS_1000X) != 0) {
  172                 anar = 0;
  173                 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0)
  174                         anar |= ANAR_X_FD;
  175                 if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0)
  176                         anar |= ANAR_X_HD;
  177 
  178                 if ((ife->ifm_media & IFM_FLOW) != 0 ||
  179                     (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
  180                         anar |= ANAR_X_PAUSE_TOWARDS;
  181                 PHY_WRITE(sc, MII_ANAR, anar);
  182         } else {
  183                 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) |
  184                     ANAR_CSMA;
  185                 if ((ife->ifm_media & IFM_FLOW) != 0 ||
  186                     (sc->mii_flags & MIIF_FORCEPAUSE) != 0) {
  187                         if ((sc->mii_capabilities & BMSR_100TXFDX) != 0)
  188                                 anar |= ANAR_FC;
  189                         /* XXX Only 1000BASE-T has PAUSE_ASYM? */
  190                         if (((sc->mii_flags & MIIF_HAVE_GTCR) != 0) &&
  191                             (sc->mii_extcapabilities &
  192                             (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0)
  193                                 anar |= ANAR_X_PAUSE_ASYM;
  194                 }
  195                 PHY_WRITE(sc, MII_ANAR, anar);
  196                 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
  197                         gtcr = 0;
  198                         if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0)
  199                                 gtcr |= GTCR_ADV_1000TFDX;
  200                         if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0)
  201                                 gtcr |= GTCR_ADV_1000THDX;
  202                         PHY_WRITE(sc, MII_100T2CR, gtcr);
  203                 }
  204         }
  205         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
  206         return (EJUSTRETURN);
  207 }
  208 
  209 int
  210 mii_phy_tick(struct mii_softc *sc)
  211 {
  212         struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
  213         struct ifnet *ifp = sc->mii_pdata->mii_ifp;
  214         int reg;
  215 
  216         /* Just bail now if the interface is down. */
  217         if ((ifp->if_flags & IFF_UP) == 0)
  218                 return (EJUSTRETURN);
  219 
  220         /*
  221          * If we're not doing autonegotiation, we don't need to do
  222          * any extra work here.  However, we need to check the link
  223          * status so we can generate an announcement if the status
  224          * changes.
  225          */
  226         if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  227                 sc->mii_ticks = 0;      /* reset autonegotiation timer. */
  228                 return (0);
  229         }
  230 
  231         /* Read the status register twice; BMSR_LINK is latch-low. */
  232         reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  233         if ((reg & BMSR_LINK) != 0) {
  234                 sc->mii_ticks = 0;      /* reset autonegotiation timer. */
  235                 /* See above. */
  236                 return (0);
  237         }
  238 
  239         /* Announce link loss right after it happens */
  240         if (sc->mii_ticks++ == 0)
  241                 return (0);
  242 
  243         /* XXX: use default value if phy driver did not set mii_anegticks */
  244         if (sc->mii_anegticks == 0)
  245                 sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  246 
  247         /* Only retry autonegotiation every mii_anegticks ticks. */
  248         if (sc->mii_ticks <= sc->mii_anegticks)
  249                 return (EJUSTRETURN);
  250 
  251         sc->mii_ticks = 0;
  252         mii_phy_reset(sc);
  253         mii_phy_auto(sc);
  254         return (0);
  255 }
  256 
  257 void
  258 mii_phy_reset(struct mii_softc *sc)
  259 {
  260         struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
  261         int reg, i;
  262 
  263         if ((sc->mii_flags & MIIF_NOISOLATE) != 0)
  264                 reg = BMCR_RESET;
  265         else
  266                 reg = BMCR_RESET | BMCR_ISO;
  267         PHY_WRITE(sc, MII_BMCR, reg);
  268 
  269         /* Wait 100ms for it to complete. */
  270         for (i = 0; i < 100; i++) {
  271                 reg = PHY_READ(sc, MII_BMCR);
  272                 if ((reg & BMCR_RESET) == 0)
  273                         break;
  274                 DELAY(1000);
  275         }
  276 
  277         if ((sc->mii_flags & MIIF_NOISOLATE) == 0) {
  278                 if ((ife == NULL && sc->mii_inst != 0) ||
  279                     (ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst))
  280                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  281         }
  282 }
  283 
  284 void
  285 mii_phy_down(struct mii_softc *sc)
  286 {
  287 
  288 }
  289 
  290 void
  291 mii_phy_update(struct mii_softc *sc, int cmd)
  292 {
  293         struct mii_data *mii = sc->mii_pdata;
  294 
  295         if (sc->mii_media_active != mii->mii_media_active ||
  296             cmd == MII_MEDIACHG) {
  297                 MIIBUS_STATCHG(sc->mii_dev);
  298                 sc->mii_media_active = mii->mii_media_active;
  299         }
  300         if (sc->mii_media_status != mii->mii_media_status) {
  301                 MIIBUS_LINKCHG(sc->mii_dev);
  302                 sc->mii_media_status = mii->mii_media_status;
  303         }
  304 }
  305 
  306 /*
  307  * Given an ifmedia word, return the corresponding ANAR value.
  308  */
  309 int
  310 mii_anar(int media)
  311 {
  312         int rv;
  313 
  314         switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) {
  315         case IFM_ETHER|IFM_10_T:
  316                 rv = ANAR_10|ANAR_CSMA;
  317                 break;
  318         case IFM_ETHER|IFM_10_T|IFM_FDX:
  319                 rv = ANAR_10_FD|ANAR_CSMA;
  320                 break;
  321         case IFM_ETHER|IFM_100_TX:
  322                 rv = ANAR_TX|ANAR_CSMA;
  323                 break;
  324         case IFM_ETHER|IFM_100_TX|IFM_FDX:
  325                 rv = ANAR_TX_FD|ANAR_CSMA;
  326                 break;
  327         case IFM_ETHER|IFM_100_T4:
  328                 rv = ANAR_T4|ANAR_CSMA;
  329                 break;
  330         default:
  331                 rv = 0;
  332                 break;
  333         }
  334 
  335         return (rv);
  336 }
  337 
  338 /*
  339  * Initialize generic PHY media based on BMSR, called when a PHY is
  340  * attached.  We expect to be set up to print a comma-separated list
  341  * of media names.  Does not print a newline.
  342  */
  343 void
  344 mii_add_media(struct mii_softc *sc)
  345 {
  346         struct mii_data *mii = sc->mii_pdata;
  347         const char *sep = "";
  348 
  349         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) {
  350                 printf("no media present");
  351                 return;
  352         }
  353 
  354 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  355 #define PRINT(s)        printf("%s%s", sep, s); sep = ", "
  356 
  357         if (sc->mii_capabilities & BMSR_10THDX) {
  358                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 0);
  359                 PRINT("10baseT");
  360         }
  361         if (sc->mii_capabilities & BMSR_10TFDX) {
  362                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
  363                     BMCR_FDX);
  364                 PRINT("10baseT-FDX");
  365         }
  366         if (sc->mii_capabilities & BMSR_100TXHDX) {
  367                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
  368                     BMCR_S100);
  369                 PRINT("100baseTX");
  370         }
  371         if (sc->mii_capabilities & BMSR_100TXFDX) {
  372                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
  373                     BMCR_S100|BMCR_FDX);
  374                 PRINT("100baseTX-FDX");
  375         }
  376         if (sc->mii_capabilities & BMSR_100T4) {
  377                 /*
  378                  * XXX How do you enable 100baseT4?  I assume we set
  379                  * XXX BMCR_S100 and then assume the PHYs will take
  380                  * XXX watever action is necessary to switch themselves
  381                  * XXX into T4 mode.
  382                  */
  383                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst),
  384                     BMCR_S100);
  385                 PRINT("100baseT4");
  386         }
  387         if (sc->mii_capabilities & BMSR_ANEG) {
  388                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst),
  389                     BMCR_AUTOEN);
  390                 PRINT("auto");
  391         }
  392 
  393 
  394 
  395 #undef ADD
  396 #undef PRINT
  397 }
  398 
  399 /*
  400  * Initialize generic PHY media based on BMSR, called when a PHY is
  401  * attached.  We expect to be set up to print a comma-separated list
  402  * of media names.  Does not print a newline.
  403  */
  404 void
  405 mii_phy_add_media(struct mii_softc *sc)
  406 {
  407         struct mii_data *mii = sc->mii_pdata;
  408         const char *sep = "";
  409         int fdx = 0;
  410 
  411         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
  412             (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) {
  413                 printf("no media present");
  414                 return;
  415         }
  416 
  417         /*
  418          * Set the autonegotiation timer for 10/100 media.  Gigabit media is
  419          * handled below.
  420          */
  421         sc->mii_anegticks = MII_ANEGTICKS;
  422 
  423 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  424 #define PRINT(s)        printf("%s%s", sep, s); sep = ", "
  425 
  426         if ((sc->mii_flags & MIIF_NOISOLATE) == 0)
  427                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  428                     MII_MEDIA_NONE);
  429 
  430         /*
  431          * There are different interpretations for the bits in
  432          * HomePNA PHYs.  And there is really only one media type
  433          * that is supported.
  434          */
  435         if ((sc->mii_flags & MIIF_IS_HPNA) != 0) {
  436                 if ((sc->mii_capabilities & BMSR_10THDX) != 0) {
  437                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0,
  438                             sc->mii_inst), MII_MEDIA_10_T);
  439                         PRINT("HomePNA1");
  440                 }
  441                 return;
  442         }
  443 
  444         if ((sc->mii_capabilities & BMSR_10THDX) != 0) {
  445                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
  446                     MII_MEDIA_10_T);
  447                 PRINT("10baseT");
  448         }
  449         if ((sc->mii_capabilities & BMSR_10TFDX) != 0) {
  450                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
  451                     MII_MEDIA_10_T_FDX);
  452                 PRINT("10baseT-FDX");
  453                 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  454                     (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  455                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T,
  456                             IFM_FDX | IFM_FLOW, sc->mii_inst),
  457                             MII_MEDIA_10_T_FDX);
  458                         PRINT("10baseT-FDX-flow");
  459                 }
  460                 fdx = 1;
  461         }
  462         if ((sc->mii_capabilities & BMSR_100TXHDX) != 0) {
  463                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
  464                     MII_MEDIA_100_TX);
  465                 PRINT("100baseTX");
  466         }
  467         if ((sc->mii_capabilities & BMSR_100TXFDX) != 0) {
  468                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
  469                     MII_MEDIA_100_TX_FDX);
  470                 PRINT("100baseTX-FDX");
  471                 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  472                     (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  473                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX,
  474                             IFM_FDX | IFM_FLOW, sc->mii_inst),
  475                             MII_MEDIA_100_TX_FDX);
  476                         PRINT("100baseTX-FDX-flow");
  477                 }
  478                 fdx = 1;
  479         }
  480         if ((sc->mii_capabilities & BMSR_100T4) != 0) {
  481                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst),
  482                     MII_MEDIA_100_T4);
  483                 PRINT("100baseT4");
  484         }
  485 
  486         if ((sc->mii_extcapabilities & EXTSR_MEDIAMASK) != 0) {
  487                 /*
  488                  * XXX Right now only handle 1000SX and 1000TX.  Need
  489                  * XXX to handle 1000LX and 1000CX somehow.
  490                  */
  491                 if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0) {
  492                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  493                         sc->mii_flags |= MIIF_IS_1000X;
  494                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0,
  495                             sc->mii_inst), MII_MEDIA_1000_X);
  496                         PRINT("1000baseSX");
  497                 }
  498                 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0) {
  499                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  500                         sc->mii_flags |= MIIF_IS_1000X;
  501                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX,
  502                             sc->mii_inst), MII_MEDIA_1000_X_FDX);
  503                         PRINT("1000baseSX-FDX");
  504                         if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  505                             (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  506                                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX,
  507                                     IFM_FDX | IFM_FLOW, sc->mii_inst),
  508                                     MII_MEDIA_1000_X_FDX);
  509                                 PRINT("1000baseSX-FDX-flow");
  510                         }
  511                         fdx = 1;
  512                 }
  513 
  514                 /*
  515                  * 1000baseT media needs to be able to manipulate
  516                  * master/slave mode.
  517                  *
  518                  * All 1000baseT PHYs have a 1000baseT control register.
  519                  */
  520                 if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0) {
  521                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  522                         sc->mii_flags |= MIIF_HAVE_GTCR;
  523                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
  524                             sc->mii_inst), MII_MEDIA_1000_T);
  525                         PRINT("1000baseT");
  526                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  527                             IFM_ETH_MASTER, sc->mii_inst), MII_MEDIA_1000_T);
  528                         PRINT("1000baseT-master");
  529                 }
  530                 if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0) {
  531                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  532                         sc->mii_flags |= MIIF_HAVE_GTCR;
  533                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX,
  534                             sc->mii_inst), MII_MEDIA_1000_T_FDX);
  535                         PRINT("1000baseT-FDX");
  536                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  537                             IFM_FDX | IFM_ETH_MASTER, sc->mii_inst),
  538                             MII_MEDIA_1000_T_FDX);
  539                         PRINT("1000baseT-FDX-master");
  540                         if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  541                             (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  542                                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  543                                     IFM_FDX | IFM_FLOW, sc->mii_inst),
  544                                     MII_MEDIA_1000_T_FDX);
  545                                 PRINT("1000baseT-FDX-flow");
  546                                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  547                                     IFM_FDX | IFM_FLOW | IFM_ETH_MASTER,
  548                                     sc->mii_inst), MII_MEDIA_1000_T_FDX);
  549                                 PRINT("1000baseT-FDX-flow-master");
  550                         }
  551                         fdx = 1;
  552                 }
  553         }
  554 
  555         if ((sc->mii_capabilities & BMSR_ANEG) != 0) {
  556                 /* intentionally invalid index */
  557                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst),
  558                     MII_NMEDIA);
  559                 PRINT("auto");
  560                 if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE) != 0) {
  561                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FLOW,
  562                             sc->mii_inst), MII_NMEDIA);
  563                         PRINT("auto-flow");
  564                 }
  565         }
  566 #undef ADD
  567 #undef PRINT
  568 }
  569 
  570 int
  571 mii_phy_detach(device_t dev)
  572 {
  573         struct mii_softc *sc;
  574 
  575         sc = device_get_softc(dev);
  576         mii_phy_down(sc);
  577         sc->mii_dev = NULL;
  578         LIST_REMOVE(sc, mii_list);
  579         return (0);
  580 }
  581 
  582 const struct mii_phydesc *
  583 mii_phy_match_gen(const struct mii_attach_args *ma,
  584   const struct mii_phydesc *mpd, size_t len)
  585 {
  586 
  587         for (; mpd->mpd_name != NULL;
  588             mpd = (const struct mii_phydesc *)((const char *)mpd + len)) {
  589                 if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui &&
  590                     MII_MODEL(ma->mii_id2) == mpd->mpd_model)
  591                         return (mpd);
  592         }
  593         return (NULL);
  594 }
  595 
  596 const struct mii_phydesc *
  597 mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd)
  598 {
  599 
  600         return (mii_phy_match_gen(ma, mpd, sizeof(struct mii_phydesc)));
  601 }
  602 
  603 int
  604 mii_phy_dev_probe(device_t dev, const struct mii_phydesc *mpd, int mrv)
  605 {
  606 
  607         mpd = mii_phy_match(device_get_ivars(dev), mpd);
  608         if (mpd != NULL) {
  609                 device_set_desc(dev, mpd->mpd_name);
  610                 return (mrv);
  611         }
  612         return (ENXIO);
  613 }
  614 
  615 /*
  616  * Return the flow control status flag from MII_ANAR & MII_ANLPAR.
  617  */
  618 u_int
  619 mii_phy_flowstatus(struct mii_softc *sc)
  620 {
  621         int anar, anlpar;
  622 
  623         if ((sc->mii_flags & MIIF_DOPAUSE) == 0)
  624                 return (0);
  625 
  626         anar = PHY_READ(sc, MII_ANAR);
  627         anlpar = PHY_READ(sc, MII_ANLPAR);
  628 
  629         /*
  630          * Check for 1000BASE-X.  Autonegotiation is a bit
  631          * different on such devices.
  632          */
  633         if ((sc->mii_flags & MIIF_IS_1000X) != 0) {
  634                 anar <<= 3;
  635                 anlpar <<= 3;
  636         }
  637 
  638         if ((anar & ANAR_PAUSE_SYM) != 0 && (anlpar & ANLPAR_PAUSE_SYM) != 0)
  639                 return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
  640 
  641         if ((anar & ANAR_PAUSE_SYM) == 0) {
  642                 if ((anar & ANAR_PAUSE_ASYM) != 0 &&
  643                     (anlpar & ANLPAR_PAUSE_TOWARDS) != 0)
  644                         return (IFM_FLOW | IFM_ETH_TXPAUSE);
  645                 else
  646                         return (0);
  647         }
  648 
  649         if ((anar & ANAR_PAUSE_ASYM) == 0) {
  650                 if ((anlpar & ANLPAR_PAUSE_SYM) != 0)
  651                         return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
  652                 else
  653                         return (0);
  654         }
  655 
  656         switch ((anlpar & ANLPAR_PAUSE_TOWARDS)) {
  657         case ANLPAR_PAUSE_NONE:
  658                 return (0);
  659         case ANLPAR_PAUSE_ASYM:
  660                 return (IFM_FLOW | IFM_ETH_RXPAUSE);
  661         default:
  662                 return (IFM_FLOW | IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE);
  663         }
  664         /* NOTREACHED */
  665 }
Cache object: 2455bda6aee2d158c264898eb72554d6
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/mii_physubr.c

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