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 driver_t ip1000phy_driver = {
   74         "ip1000phy",
   75         ip1000phy_methods,
   76         sizeof(struct mii_softc)
   77 };
   78 
   79 DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, 0, 0);
   80 
   81 static int      ip1000phy_service(struct mii_softc *, struct mii_data *, int);
   82 static void     ip1000phy_status(struct mii_softc *);
   83 static void     ip1000phy_reset(struct mii_softc *);
   84 static int      ip1000phy_mii_phy_auto(struct mii_softc *, int);
   85 
   86 static const struct mii_phydesc ip1000phys[] = {
   87         MII_PHY_DESC(xxICPLUS, IP1000A),
   88         MII_PHY_DESC(xxICPLUS, IP1001),
   89         MII_PHY_END
   90 };
   91 
   92 static const struct mii_phy_funcs ip1000phy_funcs = {
   93         ip1000phy_service,
   94         ip1000phy_status,
   95         ip1000phy_reset
   96 };
   97 
   98 static int
   99 ip1000phy_probe(device_t dev)
  100 {
  101 
  102         return (mii_phy_dev_probe(dev, ip1000phys, BUS_PROBE_DEFAULT));
  103 }
  104 
  105 static int
  106 ip1000phy_attach(device_t dev)
  107 {
  108         struct mii_attach_args *ma;
  109         u_int flags;
  110 
  111         ma = device_get_ivars(dev);
  112         flags = MIIF_NOISOLATE | MIIF_NOMANPAUSE;
  113         if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxICPLUS_IP1000A &&
  114              mii_dev_mac_match(dev, "stge") &&
  115              (miibus_get_flags(dev) & MIIF_MACPRIV0) != 0)
  116                 flags |= MIIF_PHYPRIV0;
  117         mii_phy_dev_attach(dev, flags, &ip1000phy_funcs, 1);
  118         return (0);
  119 }
  120 
  121 static int
  122 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  123 {
  124         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  125         uint32_t gig, reg, speed;
  126 
  127         switch (cmd) {
  128         case MII_POLLSTAT:
  129                 break;
  130 
  131         case MII_MEDIACHG:
  132                 PHY_RESET(sc);
  133                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  134                 case IFM_AUTO:
  135                         (void)ip1000phy_mii_phy_auto(sc, ife->ifm_media);
  136                         goto done;
  137 
  138                 case IFM_1000_T:
  139                         /*
  140                          * XXX
  141                          * Manual 1000baseT setting doesn't seem to work.
  142                          */
  143                         speed = IP1000PHY_BMCR_1000;
  144                         break;
  145 
  146                 case IFM_100_TX:
  147                         speed = IP1000PHY_BMCR_100;
  148                         break;
  149 
  150                 case IFM_10_T:
  151                         speed = IP1000PHY_BMCR_10;
  152                         break;
  153 
  154                 default:
  155                         return (EINVAL);
  156                 }
  157 
  158                 if ((ife->ifm_media & IFM_FDX) != 0) {
  159                         speed |= IP1000PHY_BMCR_FDX;
  160                         gig = IP1000PHY_1000CR_1000T_FDX;
  161                 } else
  162                         gig = IP1000PHY_1000CR_1000T;
  163 
  164                 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  165                         gig |=
  166                             IP1000PHY_1000CR_MASTER | IP1000PHY_1000CR_MANUAL;
  167                         if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
  168                                 gig |= IP1000PHY_1000CR_MMASTER;
  169                 } else
  170                         gig = 0;
  171                 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig);
  172                 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
  173 
  174 done:
  175                 break;
  176 
  177         case MII_TICK:
  178                 /*
  179                  * Only used for autonegotiation.
  180                  */
  181                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  182                         sc->mii_ticks = 0;
  183                         break;
  184                 }
  185 
  186                 /*
  187                  * check for link.
  188                  */
  189                 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  190                 if (reg & BMSR_LINK) {
  191                         sc->mii_ticks = 0;
  192                         break;
  193                 }
  194 
  195                 /* Announce link loss right after it happens */
  196                 if (sc->mii_ticks++ == 0)
  197                         break;
  198 
  199                 /*
  200                  * Only retry autonegotiation every mii_anegticks seconds.
  201                  */
  202                 if (sc->mii_ticks <= sc->mii_anegticks)
  203                         break;
  204 
  205                 sc->mii_ticks = 0;
  206                 ip1000phy_mii_phy_auto(sc, ife->ifm_media);
  207                 break;
  208         }
  209 
  210         /* Update the media status. */
  211         PHY_STATUS(sc);
  212 
  213         /* Callback if something changed. */
  214         mii_phy_update(sc, cmd);
  215         return (0);
  216 }
  217 
  218 static void
  219 ip1000phy_status(struct mii_softc *sc)
  220 {
  221         struct mii_data *mii = sc->mii_pdata;
  222         uint32_t bmsr, bmcr, stat;
  223 
  224         mii->mii_media_status = IFM_AVALID;
  225         mii->mii_media_active = IFM_ETHER;
  226 
  227         bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) |
  228             PHY_READ(sc, IP1000PHY_MII_BMSR);
  229         if ((bmsr & IP1000PHY_BMSR_LINK) != 0)
  230                 mii->mii_media_status |= IFM_ACTIVE;
  231 
  232         bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR);
  233         if ((bmcr & IP1000PHY_BMCR_LOOP) != 0)
  234                 mii->mii_media_active |= IFM_LOOP;
  235 
  236         if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) {
  237                 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) {
  238                         /* Erg, still trying, I guess... */
  239                         mii->mii_media_active |= IFM_NONE;
  240                         return;
  241                 }
  242         }
  243 
  244         if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
  245                 stat = PHY_READ(sc, IP1000PHY_LSR);
  246                 switch (stat & IP1000PHY_LSR_SPEED_MASK) {
  247                 case IP1000PHY_LSR_SPEED_10:
  248                         mii->mii_media_active |= IFM_10_T;
  249                         break;
  250                 case IP1000PHY_LSR_SPEED_100:
  251                         mii->mii_media_active |= IFM_100_TX;
  252                         break;
  253                 case IP1000PHY_LSR_SPEED_1000:
  254                         mii->mii_media_active |= IFM_1000_T;
  255                         break;
  256                 default:
  257                         mii->mii_media_active |= IFM_NONE;
  258                         return;
  259                 }
  260                 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0)
  261                         mii->mii_media_active |= IFM_FDX;
  262                 else
  263                         mii->mii_media_active |= IFM_HDX;
  264         } else {
  265                 stat = PHY_READ(sc, STGE_PhyCtrl);
  266                 switch (PC_LinkSpeed(stat)) {
  267                 case PC_LinkSpeed_Down:
  268                         mii->mii_media_active |= IFM_NONE;
  269                         return;
  270                 case PC_LinkSpeed_10:
  271                         mii->mii_media_active |= IFM_10_T;
  272                         break;
  273                 case PC_LinkSpeed_100:
  274                         mii->mii_media_active |= IFM_100_TX;
  275                         break;
  276                 case PC_LinkSpeed_1000:
  277                         mii->mii_media_active |= IFM_1000_T;
  278                         break;
  279                 default:
  280                         mii->mii_media_active |= IFM_NONE;
  281                         return;
  282                 }
  283                 if ((stat & PC_PhyDuplexStatus) != 0)
  284                         mii->mii_media_active |= IFM_FDX;
  285                 else
  286                         mii->mii_media_active |= IFM_HDX;
  287         }
  288 
  289         if ((mii->mii_media_active & IFM_FDX) != 0)
  290                 mii->mii_media_active |= mii_phy_flowstatus(sc);
  291 
  292         if ((mii->mii_media_active & IFM_1000_T) != 0) {
  293                 stat = PHY_READ(sc, IP1000PHY_MII_1000SR);
  294                 if ((stat & IP1000PHY_1000SR_MASTER) != 0)
  295                         mii->mii_media_active |= IFM_ETH_MASTER;
  296         }
  297 }
  298 
  299 static int
  300 ip1000phy_mii_phy_auto(struct mii_softc *sc, int media)
  301 {
  302         uint32_t reg;
  303 
  304         reg = 0;
  305         if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
  306                 reg = PHY_READ(sc, IP1000PHY_MII_ANAR);
  307                 reg &= ~(IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE);
  308                 reg |= IP1000PHY_ANAR_NP;
  309         }
  310         reg |= IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX |
  311             IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX;
  312         if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
  313                 reg |= IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE;
  314         PHY_WRITE(sc, IP1000PHY_MII_ANAR, reg | IP1000PHY_ANAR_CSMA);
  315 
  316         reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX;
  317         if (sc->mii_mpd_model != MII_MODEL_xxICPLUS_IP1001)
  318                 reg |= IP1000PHY_1000CR_MASTER;
  319         PHY_WRITE(sc, IP1000PHY_MII_1000CR, reg);
  320         PHY_WRITE(sc, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX |
  321             IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG));
  322 
  323         return (EJUSTRETURN);
  324 }
  325 
  326 static void
  327 ip1000phy_load_dspcode(struct mii_softc *sc)
  328 {
  329 
  330         PHY_WRITE(sc, 31, 0x0001);
  331         PHY_WRITE(sc, 27, 0x01e0);
  332         PHY_WRITE(sc, 31, 0x0002);
  333         PHY_WRITE(sc, 27, 0xeb8e);
  334         PHY_WRITE(sc, 31, 0x0000);
  335         PHY_WRITE(sc, 30, 0x005e);
  336         PHY_WRITE(sc, 9, 0x0700);
  337 
  338         DELAY(50);
  339 }
  340 
  341 static void
  342 ip1000phy_reset(struct mii_softc *sc)
  343 {
  344         uint32_t reg;
  345 
  346         mii_phy_reset(sc);
  347 
  348         /* clear autoneg/full-duplex as we don't want it after reset */
  349         reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
  350         reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX);
  351         PHY_WRITE(sc, MII_BMCR, reg);
  352 
  353         if ((sc->mii_flags & MIIF_PHYPRIV0) != 0)
  354                 ip1000phy_load_dspcode(sc);
  355 }
Cache object: 6128cb494343691911fc6627472cd4e5
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/ip1000phy.c

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