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("$FreeBSD$");
   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 static 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 advertisement 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_FDX) != 0 &&
  139             ((ife->ifm_media & IFM_FLOW) != 0 ||
  140             (sc->mii_flags & MIIF_FORCEPAUSE) != 0)) {
  141                 if ((sc->mii_flags & MIIF_IS_1000X) != 0)
  142                         anar |= ANAR_X_PAUSE_TOWARDS;
  143                 else {
  144                         anar |= ANAR_FC;
  145                         /* XXX Only 1000BASE-T has PAUSE_ASYM? */
  146                         if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0 &&
  147                             (sc->mii_extcapabilities &
  148                             (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0)
  149                                 anar |= ANAR_X_PAUSE_ASYM;
  150                 }
  151         }
  152 
  153         PHY_WRITE(sc, MII_ANAR, anar);
  154         PHY_WRITE(sc, MII_BMCR, bmcr);
  155         if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0)
  156                 PHY_WRITE(sc, MII_100T2CR, gtcr);
  157 }
  158 
  159 int
  160 mii_phy_auto(struct mii_softc *sc)
  161 {
  162         struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
  163         int anar, gtcr;
  164 
  165         /*
  166          * Check for 1000BASE-X.  Autonegotiation is a bit
  167          * different on such devices.
  168          */
  169         if ((sc->mii_flags & MIIF_IS_1000X) != 0) {
  170                 anar = 0;
  171                 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0)
  172                         anar |= ANAR_X_FD;
  173                 if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0)
  174                         anar |= ANAR_X_HD;
  175 
  176                 if ((ife->ifm_media & IFM_FLOW) != 0 ||
  177                     (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
  178                         anar |= ANAR_X_PAUSE_TOWARDS;
  179                 PHY_WRITE(sc, MII_ANAR, anar);
  180         } else {
  181                 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) |
  182                     ANAR_CSMA;
  183                 if ((ife->ifm_media & IFM_FLOW) != 0 ||
  184                     (sc->mii_flags & MIIF_FORCEPAUSE) != 0) {
  185                         if ((sc->mii_capabilities &
  186                             (BMSR_10TFDX | BMSR_100TXFDX)) != 0)
  187                                 anar |= ANAR_FC;
  188                         /* XXX Only 1000BASE-T has PAUSE_ASYM? */
  189                         if (((sc->mii_flags & MIIF_HAVE_GTCR) != 0) &&
  190                             (sc->mii_extcapabilities &
  191                             (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0)
  192                                 anar |= ANAR_X_PAUSE_ASYM;
  193                 }
  194                 PHY_WRITE(sc, MII_ANAR, anar);
  195                 if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
  196                         gtcr = 0;
  197                         if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0)
  198                                 gtcr |= GTCR_ADV_1000TFDX;
  199                         if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0)
  200                                 gtcr |= GTCR_ADV_1000THDX;
  201                         PHY_WRITE(sc, MII_100T2CR, gtcr);
  202                 }
  203         }
  204         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
  205         return (EJUSTRETURN);
  206 }
  207 
  208 int
  209 mii_phy_tick(struct mii_softc *sc)
  210 {
  211         struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
  212         struct ifnet *ifp = sc->mii_pdata->mii_ifp;
  213         int reg;
  214 
  215         /* Just bail now if the interface is down. */
  216         if ((ifp->if_flags & IFF_UP) == 0)
  217                 return (EJUSTRETURN);
  218 
  219         /*
  220          * If we're not doing autonegotiation, we don't need to do
  221          * any extra work here.  However, we need to check the link
  222          * status so we can generate an announcement if the status
  223          * changes.
  224          */
  225         if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  226                 sc->mii_ticks = 0;      /* reset autonegotiation timer. */
  227                 return (0);
  228         }
  229 
  230         /* Read the status register twice; BMSR_LINK is latch-low. */
  231         reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  232         if ((reg & BMSR_LINK) != 0) {
  233                 sc->mii_ticks = 0;      /* reset autonegotiation timer. */
  234                 /* See above. */
  235                 return (0);
  236         }
  237 
  238         /* Announce link loss right after it happens */
  239         if (sc->mii_ticks++ == 0)
  240                 return (0);
  241 
  242         /* XXX: use default value if phy driver did not set mii_anegticks */
  243         if (sc->mii_anegticks == 0)
  244                 sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  245 
  246         /* Only retry autonegotiation every mii_anegticks ticks. */
  247         if (sc->mii_ticks <= sc->mii_anegticks)
  248                 return (EJUSTRETURN);
  249 
  250         sc->mii_ticks = 0;
  251         PHY_RESET(sc);
  252         mii_phy_auto(sc);
  253         return (0);
  254 }
  255 
  256 void
  257 mii_phy_reset(struct mii_softc *sc)
  258 {
  259         struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
  260         int i, reg;
  261 
  262         if ((sc->mii_flags & MIIF_NOISOLATE) != 0)
  263                 reg = BMCR_RESET;
  264         else
  265                 reg = BMCR_RESET | BMCR_ISO;
  266         PHY_WRITE(sc, MII_BMCR, reg);
  267 
  268         /* Wait 100ms for it to complete. */
  269         for (i = 0; i < 100; i++) {
  270                 reg = PHY_READ(sc, MII_BMCR);
  271                 if ((reg & BMCR_RESET) == 0)
  272                         break;
  273                 DELAY(1000);
  274         }
  275 
  276         /* NB: a PHY may default to being powered down and/or isolated. */
  277         reg &= ~(BMCR_PDOWN | BMCR_ISO);
  278         if ((sc->mii_flags & MIIF_NOISOLATE) == 0 &&
  279             ((ife == NULL && sc->mii_inst != 0) ||
  280             (ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst)))
  281                 reg |= BMCR_ISO;
  282         if (PHY_READ(sc, MII_BMCR) != reg)
  283                 PHY_WRITE(sc, MII_BMCR, reg);
  284 }
  285 
  286 void
  287 mii_phy_down(struct mii_softc *sc)
  288 {
  289 
  290 }
  291 
  292 void
  293 mii_phy_update(struct mii_softc *sc, int cmd)
  294 {
  295         struct mii_data *mii = sc->mii_pdata;
  296 
  297         if (sc->mii_media_active != mii->mii_media_active ||
  298             cmd == MII_MEDIACHG) {
  299                 MIIBUS_STATCHG(sc->mii_dev);
  300                 sc->mii_media_active = mii->mii_media_active;
  301         }
  302         if (sc->mii_media_status != mii->mii_media_status) {
  303                 MIIBUS_LINKCHG(sc->mii_dev);
  304                 sc->mii_media_status = mii->mii_media_status;
  305         }
  306 }
  307 
  308 /*
  309  * Initialize generic PHY media based on BMSR, called when a PHY is
  310  * attached.  We expect to be set up to print a comma-separated list
  311  * of media names.  Does not print a newline.
  312  */
  313 void
  314 mii_phy_add_media(struct mii_softc *sc)
  315 {
  316         struct mii_data *mii = sc->mii_pdata;
  317         const char *sep = "";
  318         int fdx = 0;
  319 
  320         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
  321             (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) {
  322                 printf("no media present");
  323                 return;
  324         }
  325 
  326         /*
  327          * Set the autonegotiation timer for 10/100 media.  Gigabit media is
  328          * handled below.
  329          */
  330         sc->mii_anegticks = MII_ANEGTICKS;
  331 
  332 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  333 #define PRINT(s)        printf("%s%s", sep, s); sep = ", "
  334 
  335         if ((sc->mii_flags & MIIF_NOISOLATE) == 0) {
  336                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  337                     MII_MEDIA_NONE);
  338                 PRINT("none");
  339         }
  340 
  341         /*
  342          * There are different interpretations for the bits in
  343          * HomePNA PHYs.  And there is really only one media type
  344          * that is supported.
  345          */
  346         if ((sc->mii_flags & MIIF_IS_HPNA) != 0) {
  347                 if ((sc->mii_capabilities & BMSR_10THDX) != 0) {
  348                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0,
  349                             sc->mii_inst), MII_MEDIA_10_T);
  350                         PRINT("HomePNA1");
  351                 }
  352                 return;
  353         }
  354 
  355         if ((sc->mii_capabilities & BMSR_10THDX) != 0) {
  356                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
  357                     MII_MEDIA_10_T);
  358                 PRINT("10baseT");
  359         }
  360         if ((sc->mii_capabilities & BMSR_10TFDX) != 0) {
  361                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
  362                     MII_MEDIA_10_T_FDX);
  363                 PRINT("10baseT-FDX");
  364                 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  365                     (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  366                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T,
  367                             IFM_FDX | IFM_FLOW, sc->mii_inst),
  368                             MII_MEDIA_10_T_FDX);
  369                         PRINT("10baseT-FDX-flow");
  370                 }
  371                 fdx = 1;
  372         }
  373         if ((sc->mii_capabilities & BMSR_100TXHDX) != 0) {
  374                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
  375                     MII_MEDIA_100_TX);
  376                 PRINT("100baseTX");
  377         }
  378         if ((sc->mii_capabilities & BMSR_100TXFDX) != 0) {
  379                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
  380                     MII_MEDIA_100_TX_FDX);
  381                 PRINT("100baseTX-FDX");
  382                 if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  383                     (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  384                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX,
  385                             IFM_FDX | IFM_FLOW, sc->mii_inst),
  386                             MII_MEDIA_100_TX_FDX);
  387                         PRINT("100baseTX-FDX-flow");
  388                 }
  389                 fdx = 1;
  390         }
  391         if ((sc->mii_capabilities & BMSR_100T4) != 0) {
  392                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst),
  393                     MII_MEDIA_100_T4);
  394                 PRINT("100baseT4");
  395         }
  396 
  397         if ((sc->mii_extcapabilities & EXTSR_MEDIAMASK) != 0) {
  398                 /*
  399                  * XXX Right now only handle 1000SX and 1000TX.  Need
  400                  * XXX to handle 1000LX and 1000CX somehow.
  401                  */
  402                 if ((sc->mii_extcapabilities & EXTSR_1000XHDX) != 0) {
  403                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  404                         sc->mii_flags |= MIIF_IS_1000X;
  405                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0,
  406                             sc->mii_inst), MII_MEDIA_1000_X);
  407                         PRINT("1000baseSX");
  408                 }
  409                 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0) {
  410                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  411                         sc->mii_flags |= MIIF_IS_1000X;
  412                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX,
  413                             sc->mii_inst), MII_MEDIA_1000_X_FDX);
  414                         PRINT("1000baseSX-FDX");
  415                         if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  416                             (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  417                                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX,
  418                                     IFM_FDX | IFM_FLOW, sc->mii_inst),
  419                                     MII_MEDIA_1000_X_FDX);
  420                                 PRINT("1000baseSX-FDX-flow");
  421                         }
  422                         fdx = 1;
  423                 }
  424 
  425                 /*
  426                  * 1000baseT media needs to be able to manipulate
  427                  * master/slave mode.
  428                  *
  429                  * All 1000baseT PHYs have a 1000baseT control register.
  430                  */
  431                 if ((sc->mii_extcapabilities & EXTSR_1000THDX) != 0) {
  432                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  433                         sc->mii_flags |= MIIF_HAVE_GTCR;
  434                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
  435                             sc->mii_inst), MII_MEDIA_1000_T);
  436                         PRINT("1000baseT");
  437                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  438                             IFM_ETH_MASTER, sc->mii_inst), MII_MEDIA_1000_T);
  439                         PRINT("1000baseT-master");
  440                 }
  441                 if ((sc->mii_extcapabilities & EXTSR_1000TFDX) != 0) {
  442                         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  443                         sc->mii_flags |= MIIF_HAVE_GTCR;
  444                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX,
  445                             sc->mii_inst), MII_MEDIA_1000_T_FDX);
  446                         PRINT("1000baseT-FDX");
  447                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  448                             IFM_FDX | IFM_ETH_MASTER, sc->mii_inst),
  449                             MII_MEDIA_1000_T_FDX);
  450                         PRINT("1000baseT-FDX-master");
  451                         if ((sc->mii_flags & MIIF_DOPAUSE) != 0 &&
  452                             (sc->mii_flags & MIIF_NOMANPAUSE) == 0) {
  453                                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  454                                     IFM_FDX | IFM_FLOW, sc->mii_inst),
  455                                     MII_MEDIA_1000_T_FDX);
  456                                 PRINT("1000baseT-FDX-flow");
  457                                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
  458                                     IFM_FDX | IFM_FLOW | IFM_ETH_MASTER,
  459                                     sc->mii_inst), MII_MEDIA_1000_T_FDX);
  460                                 PRINT("1000baseT-FDX-flow-master");
  461                         }
  462                         fdx = 1;
  463                 }
  464         }
  465 
  466         if ((sc->mii_capabilities & BMSR_ANEG) != 0) {
  467                 /* intentionally invalid index */
  468                 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst),
  469                     MII_NMEDIA);
  470                 PRINT("auto");
  471                 if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE) != 0) {
  472                         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FLOW,
  473                             sc->mii_inst), MII_NMEDIA);
  474                         PRINT("auto-flow");
  475                 }
  476         }
  477 #undef ADD
  478 #undef PRINT
  479 }
  480 
  481 int
  482 mii_phy_detach(device_t dev)
  483 {
  484         struct mii_softc *sc;
  485 
  486         sc = device_get_softc(dev);
  487         mii_phy_down(sc);
  488         sc->mii_dev = NULL;
  489         LIST_REMOVE(sc, mii_list);
  490         return (0);
  491 }
  492 
  493 const struct mii_phydesc *
  494 mii_phy_match_gen(const struct mii_attach_args *ma,
  495   const struct mii_phydesc *mpd, size_t len)
  496 {
  497 
  498         for (; mpd->mpd_name != NULL;
  499             mpd = (const struct mii_phydesc *)((const char *)mpd + len)) {
  500                 if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui &&
  501                     MII_MODEL(ma->mii_id2) == mpd->mpd_model)
  502                         return (mpd);
  503         }
  504         return (NULL);
  505 }
  506 
  507 const struct mii_phydesc *
  508 mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd)
  509 {
  510 
  511         return (mii_phy_match_gen(ma, mpd, sizeof(struct mii_phydesc)));
  512 }
  513 
  514 int
  515 mii_phy_dev_probe(device_t dev, const struct mii_phydesc *mpd, int mrv)
  516 {
  517 
  518         mpd = mii_phy_match(device_get_ivars(dev), mpd);
  519         if (mpd != NULL) {
  520                 device_set_desc(dev, mpd->mpd_name);
  521                 return (mrv);
  522         }
  523         return (ENXIO);
  524 }
  525 
  526 void
  527 mii_phy_dev_attach(device_t dev, u_int flags, const struct mii_phy_funcs *mpf,
  528     int add_media)
  529 {
  530         struct mii_softc *sc;
  531         struct mii_attach_args *ma;
  532         struct mii_data *mii;
  533 
  534         sc = device_get_softc(dev);
  535         ma = device_get_ivars(dev);
  536         sc->mii_dev = device_get_parent(dev);
  537         mii = ma->mii_data;
  538         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  539 
  540         sc->mii_flags = flags | miibus_get_flags(dev);
  541         sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
  542         sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
  543         sc->mii_mpd_rev = MII_REV(ma->mii_id2);
  544         sc->mii_capmask = ma->mii_capmask;
  545         sc->mii_inst = mii->mii_instance++;
  546         sc->mii_phy = ma->mii_phyno;
  547         sc->mii_offset = ma->mii_offset;
  548         sc->mii_funcs = mpf;
  549         sc->mii_pdata = mii;
  550 
  551         if (bootverbose)
  552                 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
  553                     sc->mii_mpd_oui, sc->mii_mpd_model, sc->mii_mpd_rev);
  554 
  555         if (add_media == 0)
  556                 return;
  557 
  558         PHY_RESET(sc);
  559 
  560         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
  561         if (sc->mii_capabilities & BMSR_EXTSTAT)
  562                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  563         device_printf(dev, " ");
  564         mii_phy_add_media(sc);
  565         printf("\n");
  566 
  567         MIIBUS_MEDIAINIT(sc->mii_dev);
  568 }
  569 
  570 /*
  571  * Return the flow control status flag from MII_ANAR & MII_ANLPAR.
  572  */
  573 u_int
  574 mii_phy_flowstatus(struct mii_softc *sc)
  575 {
  576         int anar, anlpar;
  577 
  578         if ((sc->mii_flags & MIIF_DOPAUSE) == 0)
  579                 return (0);
  580 
  581         anar = PHY_READ(sc, MII_ANAR);
  582         anlpar = PHY_READ(sc, MII_ANLPAR);
  583 
  584         /*
  585          * Check for 1000BASE-X.  Autonegotiation is a bit
  586          * different on such devices.
  587          */
  588         if ((sc->mii_flags & MIIF_IS_1000X) != 0) {
  589                 anar <<= 3;
  590                 anlpar <<= 3;
  591         }
  592 
  593         if ((anar & ANAR_PAUSE_SYM) != 0 && (anlpar & ANLPAR_PAUSE_SYM) != 0)
  594                 return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
  595 
  596         if ((anar & ANAR_PAUSE_SYM) == 0) {
  597                 if ((anar & ANAR_PAUSE_ASYM) != 0 &&
  598                     (anlpar & ANLPAR_PAUSE_TOWARDS) != 0)
  599                         return (IFM_FLOW | IFM_ETH_TXPAUSE);
  600                 else
  601                         return (0);
  602         }
  603 
  604         if ((anar & ANAR_PAUSE_ASYM) == 0) {
  605                 if ((anlpar & ANLPAR_PAUSE_SYM) != 0)
  606                         return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
  607                 else
  608                         return (0);
  609         }
  610 
  611         switch ((anlpar & ANLPAR_PAUSE_TOWARDS)) {
  612         case ANLPAR_PAUSE_NONE:
  613                 return (0);
  614         case ANLPAR_PAUSE_ASYM:
  615                 return (IFM_FLOW | IFM_ETH_RXPAUSE);
  616         default:
  617                 return (IFM_FLOW | IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE);
  618         }
  619         /* NOTREACHED */
  620 }
Cache object: ab796fec52c469dacec7ac6a30c3dd0f
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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
