mv88e151x.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
    3  *
    4  * Copyright (c) 2019 Rubicon Communications, LLC (Netgate)
    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, and by Frank van der Linden.
   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 /* Driver for the Marvell 88e151x gigabit ethernet PHY. */
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/kernel.h>
   41 #include <sys/socket.h>
   42 #include <sys/errno.h>
   43 #include <sys/module.h>
   44 #include <sys/bus.h>
   45 
   46 #include <net/if.h>
   47 #include <net/if_media.h>
   48 
   49 #include <dev/mii/mii.h>
   50 #include <dev/mii/miivar.h>
   51 #include <dev/mii/mv88e151xreg.h>
   52 #include "miidevs.h"
   53 
   54 #include "miibus_if.h"
   55 
   56 static int mv88e151x_probe(device_t);
   57 static int mv88e151x_attach(device_t);
   58 
   59 static device_method_t mv88e151x_methods[] = {
   60         /* device interface */
   61         DEVMETHOD(device_probe,         mv88e151x_probe),
   62         DEVMETHOD(device_attach,        mv88e151x_attach),
   63         DEVMETHOD(device_detach,        mii_phy_detach),
   64         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   65         DEVMETHOD_END
   66 };
   67 
   68 static driver_t mv88e151x_driver = {
   69         "mv88e151x",
   70         mv88e151x_methods,
   71         sizeof(struct mii_softc)
   72 };
   73 
   74 DRIVER_MODULE(mv88e151x, miibus, mv88e151x_driver, 0, 0);
   75 
   76 static int mv88e151x_service(struct mii_softc *, struct mii_data *, int);
   77 static void mv88e151x_status(struct mii_softc *);
   78 
   79 static const struct mii_phydesc mv88e151xphys[] = {
   80         MII_PHY_DESC(xxMARVELL, E1512),
   81         MII_PHY_END
   82 };
   83 
   84 static const struct mii_phy_funcs mv88e151x_funcs = {
   85         mv88e151x_service,
   86         mv88e151x_status,
   87         mii_phy_reset
   88 };
   89 
   90 static int
   91 mv88e151x_probe(device_t dev)
   92 {
   93 
   94         return (mii_phy_dev_probe(dev, mv88e151xphys, BUS_PROBE_DEFAULT));
   95 }
   96 
   97 static int
   98 mv88e151x_attach(device_t dev)
   99 {
  100         const struct mii_attach_args *ma;
  101         struct mii_softc *sc;
  102         uint32_t cop_cap, cop_extcap;
  103 
  104         sc = device_get_softc(dev);
  105         ma = device_get_ivars(dev);
  106 
  107         mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &mv88e151x_funcs, 0);
  108 
  109         PHY_RESET(sc);
  110         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
  111         cop_cap = sc->mii_capabilities;
  112         if (sc->mii_capabilities & BMSR_EXTSTAT) {
  113                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  114                 cop_extcap = sc->mii_extcapabilities;
  115         }
  116         device_printf(dev, " ");
  117         if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxMARVELL_E1512)
  118                 sc->mii_capabilities &= ~BMSR_ANEG;
  119         mii_phy_add_media(sc);
  120         if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxMARVELL_E1512) {
  121                 /* Switch the fiber PHY and add the supported media. */
  122                 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_FIBER);
  123                 PHY_RESET(sc);
  124                 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
  125                 if (sc->mii_capabilities & BMSR_EXTSTAT)
  126                         sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  127                 sc->mii_flags |= MIIF_NOISOLATE;
  128                 printf(", ");
  129                 mii_phy_add_media(sc);
  130 
  131                 /* Switch back to copper PHY. */
  132                 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
  133                 sc->mii_flags &= ~MIIF_NOISOLATE;
  134                 sc->mii_capabilities = cop_cap;
  135                 sc->mii_extcapabilities = cop_extcap;
  136         }
  137         printf("\n");
  138 
  139         MIIBUS_MEDIAINIT(sc->mii_dev);
  140 
  141         mii_phy_setmedia(sc);
  142 
  143         /* Enable the fiber PHY auto negotiation. */
  144         if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxMARVELL_E1512) {
  145                 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_FIBER);
  146                 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN |
  147                     BMCR_STARTNEG | BMCR_FDX | BMCR_S1000);
  148                 PHY_WRITE(sc, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
  149         }
  150 
  151         return (0);
  152 }
  153 
  154 static int
  155 mv88e151x_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  156 {
  157         switch (cmd) {
  158         case MII_POLLSTAT:
  159                 break;
  160 
  161         case MII_MEDIACHG:
  162                 mii_phy_setmedia(sc);
  163                 break;
  164 
  165         case MII_TICK:
  166                 if (mii_phy_tick(sc) == EJUSTRETURN)
  167                         return (0);
  168                 break;
  169         }
  170 
  171         /* Update the media status. */
  172         PHY_STATUS(sc);
  173 
  174         /* Callback if something changed. */
  175         mii_phy_update(sc, cmd);
  176         return (0);
  177 }
  178 
  179 static void
  180 mv88e151x_fiber_status(struct mii_softc *phy)
  181 {
  182         struct mii_data *mii = phy->mii_pdata;
  183         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  184         int bmsr, bmcr, anlpar; //, gtcr, gtsr;
  185         uint32_t reg;
  186 
  187         mii->mii_media_status = IFM_AVALID;
  188         mii->mii_media_active = IFM_ETHER;
  189 
  190         /* Switch to the fiber PHY. */
  191         PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_FIBER);
  192 
  193         reg = PHY_READ(phy, MV88E151X_FIBER_STATUS);
  194         bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
  195         if (reg & MV88E151X_STATUS_LINK)
  196                 mii->mii_media_status |= IFM_ACTIVE;
  197         bmcr = PHY_READ(phy, MII_BMCR);
  198         if (bmcr & BMCR_ISO) {
  199                 mii->mii_media_active |= IFM_NONE;
  200                 mii->mii_media_status = 0;
  201                 PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
  202                 return;
  203         }
  204 
  205         if (bmcr & BMCR_LOOP)
  206                 mii->mii_media_active |= IFM_LOOP;
  207 
  208         if (bmcr & BMCR_AUTOEN) {
  209                 /*
  210                  * NWay autonegotiation takes the highest-order common
  211                  * bit of the ANAR and ANLPAR (i.e. best media advertised
  212                  * both by us and our link partner).
  213                  */
  214                 if ((bmsr & BMSR_ACOMP) == 0) {
  215                         /* Erg, still trying, I guess... */
  216                         mii->mii_media_active |= IFM_NONE;
  217                         PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
  218                         return;
  219                 }
  220 
  221                 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
  222                 if (anlpar & ANLPAR_X_FD)
  223                         mii->mii_media_active |= IFM_1000_SX | IFM_FDX;
  224                 else if (anlpar & ANLPAR_X_HD)
  225                         mii->mii_media_active |= IFM_1000_SX | IFM_HDX;
  226                 else if (reg & MV88E151X_STATUS_LINK &&
  227                     reg & MV88E151X_STATUS_SYNC &&
  228                     (reg & MV88E151X_STATUS_ENERGY) == 0) {
  229                         if ((reg & MV88E151X_STATUS_SPEED_MASK) ==
  230                             MV88E151X_STATUS_SPEED_1000)
  231                                 mii->mii_media_active |= IFM_1000_SX;
  232                         else if ((reg & MV88E151X_STATUS_SPEED_MASK) ==
  233                             MV88E151X_STATUS_SPEED_100)
  234                                 mii->mii_media_active |= IFM_100_FX;
  235                         else
  236                                 mii->mii_media_active |= IFM_NONE;
  237                         if ((reg & MV88E151X_STATUS_SPEED_MASK) != 0 &&
  238                             (reg & MV88E151X_STATUS_FDX))
  239                                 mii->mii_media_active |= IFM_FDX;
  240                 } else
  241                         mii->mii_media_active |= IFM_NONE;
  242 
  243                 if ((mii->mii_media_active & IFM_NONE) == 0)
  244                         phy->mii_flags |= MIIF_IS_1000X;
  245                 if ((mii->mii_media_active & IFM_FDX) != 0)
  246                         mii->mii_media_active |= mii_phy_flowstatus(phy);
  247         } else
  248                 mii->mii_media_active = ife->ifm_media;
  249 
  250         if ((mii->mii_media_status & IFM_ACTIVE) == 0)
  251                 phy->mii_flags &= ~MIIF_IS_1000X;
  252 
  253         /* Switch back to copper PHY. */
  254         PHY_WRITE(phy, MV88E151X_PAGE, MV88E151X_PAGE_COPPER);
  255 }
  256 
  257 static void
  258 mv88e151x_status(struct mii_softc *phy)
  259 {
  260         struct mii_data *mii = phy->mii_pdata;
  261 
  262         mv88e151x_fiber_status(phy);
  263         if (mii->mii_media_status & IFM_ACTIVE)
  264                 return;
  265         ukphy_status(phy);
  266 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/mv88e151x.c

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sys/dev/mii/mv88e151x.c
