ip1000phy.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2006, Pyun YongHyeon <yongari@FreeBSD.org>
    5  * All rights reserved.
    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 unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 /*
   35  * Driver for the IC Plus IP1000A/IP1001 10/100/1000 PHY.
   36  */
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/kernel.h>
   41 #include <sys/module.h>
   42 #include <sys/socket.h>
   43 #include <sys/taskqueue.h>
   44 #include <sys/bus.h>
   45 
   46 #include <net/if.h>
   47 #include <net/if_var.h>
   48 #include <net/if_media.h>
   49 
   50 #include <dev/mii/mii.h>
   51 #include <dev/mii/miivar.h>
   52 #include "miidevs.h"
   53 
   54 #include <dev/mii/ip1000phyreg.h>
   55 
   56 #include "miibus_if.h"
   57 
   58 #include <machine/bus.h>
   59 #include <dev/stge/if_stgereg.h>
   60 
   61 static int ip1000phy_probe(device_t);
   62 static int ip1000phy_attach(device_t);
   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,        mii_phy_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, 0, 0);
   81 
   82 static int      ip1000phy_service(struct mii_softc *, struct mii_data *, int);
   83 static void     ip1000phy_status(struct mii_softc *);
   84 static void     ip1000phy_reset(struct mii_softc *);
   85 static int      ip1000phy_mii_phy_auto(struct mii_softc *, int);
   86 
   87 static const struct mii_phydesc ip1000phys[] = {
   88         MII_PHY_DESC(xxICPLUS, IP1000A),
   89         MII_PHY_DESC(xxICPLUS, IP1001),
   90         MII_PHY_END
   91 };
   92 
   93 static const struct mii_phy_funcs ip1000phy_funcs = {
   94         ip1000phy_service,
   95         ip1000phy_status,
   96         ip1000phy_reset
   97 };
   98 
   99 static int
  100 ip1000phy_probe(device_t dev)
  101 {
  102 
  103         return (mii_phy_dev_probe(dev, ip1000phys, BUS_PROBE_DEFAULT));
  104 }
  105 
  106 static int
  107 ip1000phy_attach(device_t dev)
  108 {
  109         struct mii_attach_args *ma;
  110         u_int flags;
  111 
  112         ma = device_get_ivars(dev);
  113         flags = MIIF_NOISOLATE | MIIF_NOMANPAUSE;
  114         if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxICPLUS_IP1000A &&
  115              mii_dev_mac_match(dev, "stge") &&
  116              (miibus_get_flags(dev) & MIIF_MACPRIV0) != 0)
  117                 flags |= MIIF_PHYPRIV0;
  118         mii_phy_dev_attach(dev, flags, &ip1000phy_funcs, 1);
  119         return (0);
  120 }
  121 
  122 static int
  123 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  124 {
  125         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  126         uint32_t gig, reg, speed;
  127 
  128         switch (cmd) {
  129         case MII_POLLSTAT:
  130                 break;
  131 
  132         case MII_MEDIACHG:
  133                 PHY_RESET(sc);
  134                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  135                 case IFM_AUTO:
  136                         (void)ip1000phy_mii_phy_auto(sc, ife->ifm_media);
  137                         goto done;
  138 
  139                 case IFM_1000_T:
  140                         /*
  141                          * XXX
  142                          * Manual 1000baseT setting doesn't seem to work.
  143                          */
  144                         speed = IP1000PHY_BMCR_1000;
  145                         break;
  146 
  147                 case IFM_100_TX:
  148                         speed = IP1000PHY_BMCR_100;
  149                         break;
  150 
  151                 case IFM_10_T:
  152                         speed = IP1000PHY_BMCR_10;
  153                         break;
  154 
  155                 default:
  156                         return (EINVAL);
  157                 }
  158 
  159                 if ((ife->ifm_media & IFM_FDX) != 0) {
  160                         speed |= IP1000PHY_BMCR_FDX;
  161                         gig = IP1000PHY_1000CR_1000T_FDX;
  162                 } else
  163                         gig = IP1000PHY_1000CR_1000T;
  164 
  165                 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  166                         gig |=
  167                             IP1000PHY_1000CR_MASTER | IP1000PHY_1000CR_MANUAL;
  168                         if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
  169                                 gig |= IP1000PHY_1000CR_MMASTER;
  170                 } else
  171                         gig = 0;
  172                 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig);
  173                 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
  174 
  175 done:
  176                 break;
  177 
  178         case MII_TICK:
  179                 /*
  180                  * Only used for autonegotiation.
  181                  */
  182                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  183                         sc->mii_ticks = 0;
  184                         break;
  185                 }
  186 
  187                 /*
  188                  * check for link.
  189                  */
  190                 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  191                 if (reg & BMSR_LINK) {
  192                         sc->mii_ticks = 0;
  193                         break;
  194                 }
  195 
  196                 /* Announce link loss right after it happens */
  197                 if (sc->mii_ticks++ == 0)
  198                         break;
  199 
  200                 /*
  201                  * Only retry autonegotiation every mii_anegticks seconds.
  202                  */
  203                 if (sc->mii_ticks <= sc->mii_anegticks)
  204                         break;
  205 
  206                 sc->mii_ticks = 0;
  207                 ip1000phy_mii_phy_auto(sc, ife->ifm_media);
  208                 break;
  209         }
  210 
  211         /* Update the media status. */
  212         PHY_STATUS(sc);
  213 
  214         /* Callback if something changed. */
  215         mii_phy_update(sc, cmd);
  216         return (0);
  217 }
  218 
  219 static void
  220 ip1000phy_status(struct mii_softc *sc)
  221 {
  222         struct mii_data *mii = sc->mii_pdata;
  223         uint32_t bmsr, bmcr, stat;
  224 
  225         mii->mii_media_status = IFM_AVALID;
  226         mii->mii_media_active = IFM_ETHER;
  227 
  228         bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) |
  229             PHY_READ(sc, IP1000PHY_MII_BMSR);
  230         if ((bmsr & IP1000PHY_BMSR_LINK) != 0)
  231                 mii->mii_media_status |= IFM_ACTIVE;
  232 
  233         bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR);
  234         if ((bmcr & IP1000PHY_BMCR_LOOP) != 0)
  235                 mii->mii_media_active |= IFM_LOOP;
  236 
  237         if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) {
  238                 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) {
  239                         /* Erg, still trying, I guess... */
  240                         mii->mii_media_active |= IFM_NONE;
  241                         return;
  242                 }
  243         }
  244 
  245         if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
  246                 stat = PHY_READ(sc, IP1000PHY_LSR);
  247                 switch (stat & IP1000PHY_LSR_SPEED_MASK) {
  248                 case IP1000PHY_LSR_SPEED_10:
  249                         mii->mii_media_active |= IFM_10_T;
  250                         break;
  251                 case IP1000PHY_LSR_SPEED_100:
  252                         mii->mii_media_active |= IFM_100_TX;
  253                         break;
  254                 case IP1000PHY_LSR_SPEED_1000:
  255                         mii->mii_media_active |= IFM_1000_T;
  256                         break;
  257                 default:
  258                         mii->mii_media_active |= IFM_NONE;
  259                         return;
  260                 }
  261                 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0)
  262                         mii->mii_media_active |= IFM_FDX;
  263                 else
  264                         mii->mii_media_active |= IFM_HDX;
  265         } else {
  266                 stat = PHY_READ(sc, STGE_PhyCtrl);
  267                 switch (PC_LinkSpeed(stat)) {
  268                 case PC_LinkSpeed_Down:
  269                         mii->mii_media_active |= IFM_NONE;
  270                         return;
  271                 case PC_LinkSpeed_10:
  272                         mii->mii_media_active |= IFM_10_T;
  273                         break;
  274                 case PC_LinkSpeed_100:
  275                         mii->mii_media_active |= IFM_100_TX;
  276                         break;
  277                 case PC_LinkSpeed_1000:
  278                         mii->mii_media_active |= IFM_1000_T;
  279                         break;
  280                 default:
  281                         mii->mii_media_active |= IFM_NONE;
  282                         return;
  283                 }
  284                 if ((stat & PC_PhyDuplexStatus) != 0)
  285                         mii->mii_media_active |= IFM_FDX;
  286                 else
  287                         mii->mii_media_active |= IFM_HDX;
  288         }
  289 
  290         if ((mii->mii_media_active & IFM_FDX) != 0)
  291                 mii->mii_media_active |= mii_phy_flowstatus(sc);
  292 
  293         if ((mii->mii_media_active & IFM_1000_T) != 0) {
  294                 stat = PHY_READ(sc, IP1000PHY_MII_1000SR);
  295                 if ((stat & IP1000PHY_1000SR_MASTER) != 0)
  296                         mii->mii_media_active |= IFM_ETH_MASTER;
  297         }
  298 }
  299 
  300 static int
  301 ip1000phy_mii_phy_auto(struct mii_softc *sc, int media)
  302 {
  303         uint32_t reg;
  304 
  305         reg = 0;
  306         if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
  307                 reg = PHY_READ(sc, IP1000PHY_MII_ANAR);
  308                 reg &= ~(IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE);
  309                 reg |= IP1000PHY_ANAR_NP;
  310         }
  311         reg |= IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX |
  312             IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX;
  313         if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
  314                 reg |= IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE;
  315         PHY_WRITE(sc, IP1000PHY_MII_ANAR, reg | IP1000PHY_ANAR_CSMA);
  316 
  317         reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX;
  318         if (sc->mii_mpd_model != MII_MODEL_xxICPLUS_IP1001)
  319                 reg |= IP1000PHY_1000CR_MASTER;
  320         PHY_WRITE(sc, IP1000PHY_MII_1000CR, reg);
  321         PHY_WRITE(sc, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX |
  322             IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG));
  323 
  324         return (EJUSTRETURN);
  325 }
  326 
  327 static void
  328 ip1000phy_load_dspcode(struct mii_softc *sc)
  329 {
  330 
  331         PHY_WRITE(sc, 31, 0x0001);
  332         PHY_WRITE(sc, 27, 0x01e0);
  333         PHY_WRITE(sc, 31, 0x0002);
  334         PHY_WRITE(sc, 27, 0xeb8e);
  335         PHY_WRITE(sc, 31, 0x0000);
  336         PHY_WRITE(sc, 30, 0x005e);
  337         PHY_WRITE(sc, 9, 0x0700);
  338 
  339         DELAY(50);
  340 }
  341 
  342 static void
  343 ip1000phy_reset(struct mii_softc *sc)
  344 {
  345         uint32_t reg;
  346 
  347         mii_phy_reset(sc);
  348 
  349         /* clear autoneg/full-duplex as we don't want it after reset */
  350         reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
  351         reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX);
  352         PHY_WRITE(sc, MII_BMCR, reg);
  353 
  354         if ((sc->mii_flags & MIIF_PHYPRIV0) != 0)
  355                 ip1000phy_load_dspcode(sc);
  356 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/ip1000phy.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/ip1000phy.c
