nsphy.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*      $NetBSD: nsphy.c,v 1.18 1999/07/14 23:57:36 thorpej Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999 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  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *      This product includes software developed by the NetBSD
   22  *      Foundation, Inc. and its contributors.
   23  * 4. Neither the name of The NetBSD Foundation nor the names of its
   24  *    contributors may be used to endorse or promote products derived
   25  *    from this software without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   37  * POSSIBILITY OF SUCH DAMAGE.
   38  *
   39  * $FreeBSD: src/sys/dev/mii/nsphy.c,v 1.2.2.5 2001/06/08 19:58:33 semenu Exp $
   40  */
   41 
   42 /*
   43  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   44  *
   45  * Redistribution and use in source and binary forms, with or without
   46  * modification, are permitted provided that the following conditions
   47  * are met:
   48  * 1. Redistributions of source code must retain the above copyright
   49  *    notice, this list of conditions and the following disclaimer.
   50  * 2. Redistributions in binary form must reproduce the above copyright
   51  *    notice, this list of conditions and the following disclaimer in the
   52  *    documentation and/or other materials provided with the distribution.
   53  * 3. All advertising materials mentioning features or use of this software
   54  *    must display the following acknowledgement:
   55  *      This product includes software developed by Manuel Bouyer.
   56  * 4. The name of the author may not be used to endorse or promote products
   57  *    derived from this software without specific prior written permission.
   58  *
   59  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   60  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   61  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   62  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   63  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   64  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   65  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   66  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   67  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   68  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   69  */
   70 
   71 /*
   72  * driver for National Semiconductor's DP83840A ethernet 10/100 PHY
   73  * Data Sheet available from www.national.com
   74  */
   75 
   76 #include <sys/param.h>
   77 #include <sys/systm.h>
   78 #include <sys/kernel.h>
   79 #include <sys/socket.h>
   80 #include <sys/errno.h>
   81 #include <sys/module.h>
   82 #include <sys/bus.h>
   83 
   84 #include <net/if.h>
   85 #include <net/if_media.h>
   86 
   87 #include "mii.h"
   88 #include "miivar.h"
   89 #include "miidevs.h"
   90 
   91 #include "nsphyreg.h"
   92 
   93 #include "miibus_if.h"
   94 
   95 static int nsphy_probe          (device_t);
   96 static int nsphy_attach         (device_t);
   97 
   98 static device_method_t nsphy_methods[] = {
   99         /* device interface */
  100         DEVMETHOD(device_probe,         nsphy_probe),
  101         DEVMETHOD(device_attach,        nsphy_attach),
  102         DEVMETHOD(device_detach,        ukphy_detach),
  103         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  104         DEVMETHOD_END
  105 };
  106 
  107 static const struct mii_phydesc nsphys[] = {
  108         MII_PHYDESC(NATSEMI,    DP83840),
  109         MII_PHYDESC_NULL
  110 };
  111 
  112 static devclass_t nsphy_devclass;
  113 
  114 static driver_t nsphy_driver = {
  115         "nsphy",
  116         nsphy_methods,
  117         sizeof(struct mii_softc)
  118 };
  119 
  120 DRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, NULL, NULL);
  121 
  122 static int      nsphy_service(struct mii_softc *, struct mii_data *, int);
  123 static void     nsphy_status(struct mii_softc *);
  124 static void     nsphy_reset(struct mii_softc *);
  125 
  126 static int
  127 nsphy_probe(device_t dev)
  128 {
  129         struct mii_attach_args *ma = device_get_ivars(dev);
  130         const struct mii_phydesc *mpd;
  131 
  132         mpd = mii_phy_match(ma, nsphys);
  133         if (mpd != NULL) {
  134                 device_set_desc(dev, mpd->mpd_name);
  135                 return (0);
  136         }
  137         return (ENXIO);
  138 }
  139 
  140 static int
  141 nsphy_attach(device_t dev)
  142 {
  143         struct mii_softc *sc;
  144         struct mii_attach_args *ma;
  145         struct mii_data *mii;
  146 
  147         sc = device_get_softc(dev);
  148         ma = device_get_ivars(dev);
  149         mii_softc_init(sc, ma);
  150         sc->mii_dev = device_get_parent(dev);
  151         mii = device_get_softc(sc->mii_dev);
  152         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  153 
  154         sc->mii_inst = mii->mii_instance;
  155         sc->mii_service = nsphy_service;
  156         sc->mii_reset = nsphy_reset;
  157         sc->mii_pdata = mii;
  158 
  159 #ifdef foo
  160         /*
  161          * i82557 wedges if all of its PHYs are isolated!
  162          */
  163         if (strcmp(device_get_name(device_get_parent(sc->mii_dev)),
  164             "fxp") == 0 && mii->mii_instance == 0)
  165 #endif
  166 
  167         sc->mii_flags |= MIIF_NOISOLATE;
  168         mii->mii_instance++;
  169 
  170 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  171 
  172 #if 0
  173         /* Can't do this on the i82557! */
  174         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  175             BMCR_ISO);
  176 #endif
  177         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
  178             MII_MEDIA_100_TX);
  179 
  180         nsphy_reset(sc);
  181 
  182         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  183         device_printf(dev, " ");
  184         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  185                 kprintf("no media present");
  186         else
  187                 mii_phy_add_media(sc);
  188         kprintf("\n");
  189 #undef ADD
  190 
  191         MIIBUS_MEDIAINIT(sc->mii_dev);
  192         return(0);
  193 }
  194 
  195 static int
  196 nsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  197 {
  198         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  199         int reg;
  200 
  201         switch (cmd) {
  202         case MII_POLLSTAT:
  203                 /*
  204                  * If we're not polling our PHY instance, just return.
  205                  */
  206                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  207                         return (0);
  208                 break;
  209 
  210         case MII_MEDIACHG:
  211                 /*
  212                  * If the media indicates a different PHY instance,
  213                  * isolate ourselves.
  214                  */
  215                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  216                         reg = PHY_READ(sc, MII_BMCR);
  217                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  218                         return (0);
  219                 }
  220 
  221                 /*
  222                  * If the interface is not up, don't do anything.
  223                  */
  224                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  225                         break;
  226 
  227                 reg = PHY_READ(sc, MII_NSPHY_PCR);
  228 
  229                 /*
  230                  * Set up the PCR to use LED4 to indicate full-duplex
  231                  * in both 10baseT and 100baseTX modes.
  232                  */
  233                 reg |= PCR_LED4MODE;
  234 
  235                 /*
  236                  * Make sure Carrier Intgrity Monitor function is
  237                  * disabled (normal for Node operation, but sometimes
  238                  * it's not set?!)
  239                  */
  240                 reg |= PCR_CIMDIS;
  241 
  242                 /*
  243                  * Make sure "force link good" is set to normal mode.
  244                  * It's only intended for debugging.
  245                  */
  246                 reg |= PCR_FLINK100;
  247 
  248                 /*
  249                  * Mystery bits which are supposedly `reserved',
  250                  * but we seem to need to set them when the PHY
  251                  * is connected to some interfaces:
  252                  *
  253                  * 0x0400 is needed for fxp
  254                  *        (Intel EtherExpress Pro 10+/100B, 82557 chip)
  255                  *        (nsphy with a DP83840 chip)
  256                  * 0x0100 may be needed for some other card
  257                  */
  258                 reg |= PCR_CONGCTRL | PCR_TXREADYSEL;
  259 
  260                 if (strcmp(device_get_name(device_get_parent(sc->mii_dev)),
  261                     "fxp") == 0)
  262                         PHY_WRITE(sc, MII_NSPHY_PCR, reg);
  263 
  264                 mii_phy_set_media(sc);
  265                 break;
  266 
  267         case MII_TICK:
  268                 /*
  269                  * If we're not currently selected, just return.
  270                  */
  271                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  272                         return (0);
  273 
  274                 if (mii_phy_tick(sc) == EJUSTRETURN)
  275                         return (0);
  276                 break;
  277         }
  278 
  279         /* Update the media status. */
  280         nsphy_status(sc);
  281 
  282         /* Callback if something changed. */
  283         mii_phy_update(sc, cmd);
  284         return (0);
  285 }
  286 
  287 static void
  288 nsphy_status(struct mii_softc *sc)
  289 {
  290         struct mii_data *mii = sc->mii_pdata;
  291         int bmsr, bmcr, par, anlpar;
  292 
  293         mii->mii_media_status = IFM_AVALID;
  294         mii->mii_media_active = IFM_ETHER;
  295 
  296         bmsr = PHY_READ(sc, MII_BMSR) |
  297             PHY_READ(sc, MII_BMSR);
  298         if (bmsr & BMSR_LINK)
  299                 mii->mii_media_status |= IFM_ACTIVE;
  300 
  301         bmcr = PHY_READ(sc, MII_BMCR);
  302         if (bmcr & BMCR_ISO) {
  303                 mii->mii_media_active |= IFM_NONE;
  304                 mii->mii_media_status = 0;
  305                 return;
  306         }
  307 
  308         if (bmcr & BMCR_LOOP)
  309                 mii->mii_media_active |= IFM_LOOP;
  310 
  311         if (bmcr & BMCR_AUTOEN) {
  312                 /*
  313                  * The PAR status bits are only valid of autonegotiation
  314                  * has completed (or it's disabled).
  315                  */
  316                 if ((bmsr & BMSR_ACOMP) == 0) {
  317                         /* Erg, still trying, I guess... */
  318                         mii->mii_media_active |= IFM_NONE;
  319                         return;
  320                 }
  321 
  322                 /*
  323                  * Argh.  The PAR doesn't seem to indicate duplex mode
  324                  * properly!  Determine media based on link partner's
  325                  * advertised capabilities.
  326                  */
  327                 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
  328                         anlpar = PHY_READ(sc, MII_ANAR) &
  329                             PHY_READ(sc, MII_ANLPAR);
  330                         if (anlpar & ANLPAR_T4)
  331                                 mii->mii_media_active |= IFM_100_T4;
  332                         else if (anlpar & ANLPAR_TX_FD)
  333                                 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
  334                         else if (anlpar & ANLPAR_TX)
  335                                 mii->mii_media_active |= IFM_100_TX;
  336                         else if (anlpar & ANLPAR_10_FD)
  337                                 mii->mii_media_active |= IFM_10_T|IFM_FDX;
  338                         else if (anlpar & ANLPAR_10)
  339                                 mii->mii_media_active |= IFM_10_T;
  340                         else
  341                                 mii->mii_media_active |= IFM_NONE;
  342                         return;
  343                 }
  344 
  345                 /*
  346                  * Link partner is not capable of autonegotiation.
  347                  * We will never be in full-duplex mode if this is
  348                  * the case, so reading the PAR is OK.
  349                  */
  350                 par = PHY_READ(sc, MII_NSPHY_PAR);
  351                 if (par & PAR_10)
  352                         mii->mii_media_active |= IFM_10_T;
  353                 else
  354                         mii->mii_media_active |= IFM_100_TX;
  355 #if 0
  356                 if (par & PAR_FDX)
  357                         mii->mii_media_active |= IFM_FDX;
  358 #endif
  359         } else
  360                 mii->mii_media_active |= mii->mii_media.ifm_cur->ifm_media;
  361 }
  362 
  363 static void
  364 nsphy_reset(struct mii_softc *sc)
  365 {
  366         int anar;
  367 
  368         mii_phy_reset(sc);
  369         anar = PHY_READ(sc, MII_ANAR);
  370         anar |= BMSR_MEDIA_TO_ANAR(PHY_READ(sc, MII_BMSR));
  371         PHY_WRITE(sc, MII_ANAR, anar);
  372 }
Cache object: 7f436ee22b9fd1947a38ebc149baa91d
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/dev/netif/mii_layer/nsphy.c

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