ip1000phy.c

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    1 /*-
    2  * Copyright (c) 2006, 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  * $FreeBSD: src/sys/dev/mii/ip1000phy.c,v 1.1 2006/07/25 00:16:09 yongari Exp $
   28  */
   29 
   30 /*
   31  * Driver for the IC Plus IP1000A 10/100/1000 PHY.
   32  */
   33 
   34 #include <sys/param.h>
   35 #include <sys/bus.h>
   36 #include <sys/kernel.h>
   37 #include <sys/module.h>
   38 #include <sys/socket.h>
   39 #include <sys/sysctl.h>
   40 
   41 #include <net/if.h>
   42 #include <net/if_arp.h>
   43 #include <net/if_media.h>
   44 #include <net/if_poll.h>
   45 
   46 #include <dev/netif/mii_layer/mii.h>
   47 #include <dev/netif/mii_layer/miivar.h>
   48 #include "miidevs.h"
   49 
   50 #include <dev/netif/mii_layer/ip1000phyreg.h>
   51 
   52 #include "miibus_if.h"
   53 
   54 #include <dev/netif/stge/if_stgereg.h>
   55 #include <dev/netif/stge/if_stgevar.h>
   56 
   57 static int      ip1000phy_probe(device_t);
   58 static int      ip1000phy_attach(device_t);
   59 static int      ip1000phy_service(struct mii_softc *, struct mii_data *, int);
   60 static void     ip1000phy_status(struct mii_softc *);
   61 static void     ip1000phy_reset(struct mii_softc *);
   62 static int      ip1000phy_mii_phy_auto(struct mii_softc *);
   63 
   64 static device_method_t ip1000phy_methods[] = {
   65         /* device interface */
   66         DEVMETHOD(device_probe,         ip1000phy_probe),
   67         DEVMETHOD(device_attach,        ip1000phy_attach),
   68         DEVMETHOD(device_detach,        ukphy_detach),
   69         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   70         DEVMETHOD_END
   71 };
   72 
   73 static devclass_t ip1000phy_devclass;
   74 static driver_t ip1000phy_driver = {
   75         "ip1000phy",
   76         ip1000phy_methods,
   77         sizeof (struct mii_softc)
   78 };
   79 
   80 DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, ip1000phy_devclass, NULL, NULL);
   81 
   82 static const struct mii_phydesc ip1000phys[] = {
   83         MII_PHYDESC(ICPLUS,     IP1000A),
   84         MII_PHYDESC_NULL
   85 };
   86 
   87 static int
   88 ip1000phy_probe(device_t dev)
   89 {
   90         struct mii_attach_args *ma;
   91         const struct mii_phydesc *mpd;
   92 
   93         ma = device_get_ivars(dev);
   94         mpd = mii_phy_match(ma, ip1000phys);
   95         if (mpd != NULL) {
   96                 device_set_desc(dev, mpd->mpd_name);
   97                 return (0);
   98         }
   99 
  100         return (ENXIO);
  101 }
  102 
  103 static int
  104 ip1000phy_attach(device_t dev)
  105 {
  106         struct mii_softc *sc;
  107         struct mii_attach_args *ma;
  108         struct mii_data *mii;
  109 
  110         sc = device_get_softc(dev);
  111         ma = device_get_ivars(dev);
  112         mii_softc_init(sc, ma);
  113         sc->mii_dev = device_get_parent(dev);
  114         mii = device_get_softc(sc->mii_dev);
  115         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  116 
  117         sc->mii_inst = mii->mii_instance;
  118         sc->mii_service = ip1000phy_service;
  119         sc->mii_pdata = mii;
  120 
  121         sc->mii_anegticks = MII_ANEGTICKS_GIGE;
  122         sc->mii_flags |= MIIF_NOISOLATE;
  123 
  124         mii->mii_instance++;
  125 
  126         device_printf(dev, " ");
  127 
  128 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  129 
  130         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  131             BMCR_ISO);
  132 
  133         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
  134             IP1000PHY_BMCR_10);
  135         kprintf("10baseT, ");
  136         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
  137             IP1000PHY_BMCR_10 | IP1000PHY_BMCR_FDX);
  138         kprintf("10baseT-FDX, ");
  139         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
  140             IP1000PHY_BMCR_100);
  141         kprintf("100baseTX, ");
  142         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
  143             IP1000PHY_BMCR_100 | IP1000PHY_BMCR_FDX);
  144         kprintf("100baseTX-FDX, ");
  145         /* 1000baseT half-duplex, really supported? */
  146         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst),
  147             IP1000PHY_BMCR_1000);
  148         kprintf("1000baseT, ");
  149         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst),
  150             IP1000PHY_BMCR_1000 | IP1000PHY_BMCR_FDX);
  151         kprintf("1000baseT-FDX, ");
  152         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
  153         kprintf("auto\n");
  154 #undef ADD
  155 
  156         ip1000phy_reset(sc);
  157 
  158         MIIBUS_MEDIAINIT(sc->mii_dev);
  159         return(0);
  160 }
  161 
  162 static int
  163 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  164 {
  165         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  166         uint32_t gig, reg, speed;
  167 
  168         switch (cmd) {
  169         case MII_POLLSTAT:
  170                 /*
  171                  * If we're not polling our PHY instance, just return.
  172                  */
  173                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  174                         return (0);
  175                 break;
  176 
  177         case MII_MEDIACHG:
  178                 /*
  179                  * If the media indicates a different PHY instance,
  180                  * isolate ourselves.
  181                  */
  182                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  183                         reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
  184                         PHY_WRITE(sc, IP1000PHY_MII_BMCR,
  185                             reg | IP1000PHY_BMCR_ISO);
  186                         return (0);
  187                 }
  188 
  189                 /*
  190                  * If the interface is not up, don't do anything.
  191                  */
  192                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  193                         break;
  194 
  195                 ip1000phy_reset(sc);
  196                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  197                 case IFM_AUTO:
  198                         ip1000phy_mii_phy_auto(sc);
  199                         goto done;
  200 
  201                 case IFM_1000_T:
  202                         /*
  203                          * XXX
  204                          * Manual 1000baseT setting doesn't seem to work.
  205                          */
  206                         speed = IP1000PHY_BMCR_1000;
  207                         break;
  208 
  209                 case IFM_100_TX:
  210                         speed = IP1000PHY_BMCR_100;
  211                         break;
  212 
  213                 case IFM_10_T:
  214                         speed = IP1000PHY_BMCR_10;
  215                         break;
  216 
  217                 default:
  218                         return (EINVAL);
  219                 }
  220 
  221                 if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) {
  222                         speed |= IP1000PHY_BMCR_FDX;
  223                         gig = IP1000PHY_1000CR_1000T_FDX;
  224                 } else {
  225                         gig = IP1000PHY_1000CR_1000T;
  226                 }
  227 
  228                 PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0);
  229                 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
  230 
  231                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)
  232                         break;
  233 
  234                 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig);
  235                 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
  236 
  237                 /*
  238                  * When settning the link manually, one side must
  239                  * be the master and the other the slave. However
  240                  * ifmedia doesn't give us a good way to specify
  241                  * this, so we fake it by using one of the LINK
  242                  * flags. If LINK0 is set, we program the PHY to
  243                  * be a master, otherwise it's a slave.
  244                  */
  245                 if ((mii->mii_ifp->if_flags & IFF_LINK0)) {
  246                         PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig |
  247                             IP1000PHY_1000CR_MASTER |
  248                             IP1000PHY_1000CR_MMASTER |
  249                             IP1000PHY_1000CR_MANUAL);
  250                 } else {
  251                         PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig |
  252                             IP1000PHY_1000CR_MASTER |
  253                             IP1000PHY_1000CR_MANUAL);
  254                 }
  255 
  256 done:
  257                 break;
  258 
  259         case MII_TICK:
  260                 /*
  261                  * If we're not currently selected, just return.
  262                  */
  263                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  264                         return (0);
  265                 /*
  266                  * Is the interface even up?
  267                  */
  268                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  269                         return (0);
  270 
  271                 /*
  272                  * Only used for autonegotiation.
  273                  */
  274                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  275                         break;
  276 
  277                 /*
  278                  * check for link.
  279                  */
  280                 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  281                 if (reg & BMSR_LINK) {
  282                         sc->mii_ticks = 0;
  283                         break;
  284                 }
  285 
  286                 /* Announce link loss right after it happens */
  287                 if (sc->mii_ticks++ == 0)
  288                         break;
  289 
  290                 /*
  291                  * Only retry autonegotiation every mii_anegticks seconds.
  292                  */
  293                 if (sc->mii_ticks <= sc->mii_anegticks)
  294                         return (0);
  295 
  296                 sc->mii_ticks = 0;
  297                 ip1000phy_mii_phy_auto(sc);
  298                 break;
  299         }
  300 
  301         /* Update the media status. */
  302         ip1000phy_status(sc);
  303 
  304         /* Callback if something changed. */
  305         mii_phy_update(sc, cmd);
  306         return (0);
  307 }
  308 
  309 static void
  310 ip1000phy_status(struct mii_softc *sc)
  311 {
  312         struct mii_data *mii = sc->mii_pdata;
  313         uint32_t bmsr, bmcr, stat;
  314         uint32_t ar, lpar;
  315 
  316         mii->mii_media_status = IFM_AVALID;
  317         mii->mii_media_active = IFM_ETHER;
  318 
  319         bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) |
  320             PHY_READ(sc, IP1000PHY_MII_BMSR);
  321         if ((bmsr & IP1000PHY_BMSR_LINK) != 0)
  322                 mii->mii_media_status |= IFM_ACTIVE;
  323 
  324         bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR);
  325         if ((bmcr & IP1000PHY_BMCR_LOOP) != 0)
  326                 mii->mii_media_active |= IFM_LOOP;
  327 
  328         if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) {
  329                 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) {
  330                         /* Erg, still trying, I guess... */
  331                         mii->mii_media_active |= IFM_NONE;
  332                         return;
  333                 }
  334         }
  335 
  336         stat = PHY_READ(sc, STGE_PhyCtrl);
  337         switch (PC_LinkSpeed(stat)) {
  338         case PC_LinkSpeed_Down:
  339                 mii->mii_media_active |= IFM_NONE;
  340                 return;
  341         case PC_LinkSpeed_10:
  342                 mii->mii_media_active |= IFM_10_T;
  343                 break;
  344         case PC_LinkSpeed_100:
  345                 mii->mii_media_active |= IFM_100_TX;
  346                 break;
  347         case PC_LinkSpeed_1000:
  348                 mii->mii_media_active |= IFM_1000_T;
  349                 break;
  350         }
  351         if ((stat & PC_PhyDuplexStatus) != 0)
  352                 mii->mii_media_active |= IFM_FDX;
  353         else
  354                 mii->mii_media_active |= IFM_HDX;
  355 
  356         ar = PHY_READ(sc, IP1000PHY_MII_ANAR);
  357         lpar = PHY_READ(sc, IP1000PHY_MII_ANLPAR);
  358 
  359         /*
  360          * FLAG0 : Rx flow-control
  361          * FLAG1 : Tx flow-control
  362          */
  363         if ((ar & IP1000PHY_ANAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_PAUSE))
  364                 mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1;
  365         else if (!(ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) &&
  366             (lpar & IP1000PHY_ANLPAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_APAUSE))
  367                 mii->mii_media_active |= IFM_FLAG1;
  368         else if ((ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) &&
  369             !(lpar & IP1000PHY_ANLPAR_PAUSE) &&
  370             (lpar & IP1000PHY_ANLPAR_APAUSE)) {
  371                 mii->mii_media_active |= IFM_FLAG0;
  372         }
  373 
  374         /*
  375          * FLAG2 : local PHY resolved to MASTER
  376          */
  377         if ((mii->mii_media_active & IFM_1000_T) != 0) {
  378                 stat = PHY_READ(sc, IP1000PHY_MII_1000SR);
  379                 if ((stat & IP1000PHY_1000SR_MASTER) != 0)
  380                         mii->mii_media_active |= IFM_FLAG2;
  381         }
  382 }
  383 
  384 static int
  385 ip1000phy_mii_phy_auto(struct mii_softc *mii)
  386 {
  387         uint32_t reg;
  388 
  389         PHY_WRITE(mii, IP1000PHY_MII_ANAR,
  390             IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX |
  391             IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX |
  392             IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE);
  393         reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX;
  394         reg |= IP1000PHY_1000CR_MASTER;
  395         PHY_WRITE(mii, IP1000PHY_MII_1000CR, reg);
  396         PHY_WRITE(mii, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX |
  397             IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG));
  398 
  399         return (EJUSTRETURN);
  400 }
  401 
  402 static void
  403 ip1000phy_load_dspcode(struct mii_softc *sc)
  404 {
  405 
  406         PHY_WRITE(sc, 31, 0x0001);
  407         PHY_WRITE(sc, 27, 0x01e0);
  408         PHY_WRITE(sc, 31, 0x0002);
  409         PHY_WRITE(sc, 27, 0xeb8e);
  410         PHY_WRITE(sc, 31, 0x0000);
  411         PHY_WRITE(sc, 30, 0x005e);
  412         PHY_WRITE(sc, 9, 0x0700);
  413 
  414         DELAY(50);
  415 }
  416 
  417 static void
  418 ip1000phy_reset(struct mii_softc *sc)
  419 {
  420         struct stge_softc *stge_sc;
  421         device_t parent;
  422         uint32_t reg;
  423 
  424         mii_phy_reset(sc);
  425 
  426         /* clear autoneg/full-duplex as we don't want it after reset */
  427         reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
  428         reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX);
  429         PHY_WRITE(sc, MII_BMCR, reg);
  430 
  431         /*
  432          * XXX There should be more general way to pass PHY specific
  433          * data via mii interface.
  434          */
  435         parent = device_get_parent(sc->mii_dev);
  436         if (strncmp(device_get_name(parent), "stge", 4) == 0) {
  437                 stge_sc = device_get_softc(parent);
  438                 if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e)
  439                         ip1000phy_load_dspcode(sc);
  440         }
  441 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/netif/mii_layer/ip1000phy.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/netif/mii_layer/ip1000phy.c
