xmphy.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 /*
    2  * Copyright (c) 2000
    3  *      Bill Paul <wpaul@ee.columbia.edu>.  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, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by Bill Paul.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   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
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/5.0/sys/dev/mii/xmphy.c 106107 2002-10-29 00:20:47Z semenu $
   33  */
   34 
   35 /*
   36  * driver for the XaQti XMAC II's internal PHY. This is sort of
   37  * like a 10/100 PHY, except the only thing we're really autoselecting
   38  * here is full/half duplex. Speed is always 1000mbps.
   39  */
   40 
   41 #include <sys/param.h>
   42 #include <sys/systm.h>
   43 #include <sys/kernel.h>
   44 #include <sys/socket.h>
   45 #include <sys/bus.h>
   46 
   47 
   48 #include <net/if.h>
   49 #include <net/if_media.h>
   50 
   51 #include <dev/mii/mii.h>
   52 #include <dev/mii/miivar.h>
   53 #include <dev/mii/miidevs.h>
   54 
   55 #include <dev/mii/xmphyreg.h>
   56 
   57 #include "miibus_if.h"
   58 
   59 #if !defined(lint)
   60 static const char rcsid[] =
   61   "$FreeBSD: releng/5.0/sys/dev/mii/xmphy.c 106107 2002-10-29 00:20:47Z semenu $";
   62 #endif
   63 
   64 static int xmphy_probe(device_t);
   65 static int xmphy_attach(device_t);
   66 
   67 static device_method_t xmphy_methods[] = {
   68         /* device interface */
   69         DEVMETHOD(device_probe,         xmphy_probe),
   70         DEVMETHOD(device_attach,        xmphy_attach),
   71         DEVMETHOD(device_detach,        mii_phy_detach),
   72         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   73         { 0, 0 }
   74 };
   75 
   76 static devclass_t xmphy_devclass;
   77 
   78 static driver_t xmphy_driver = {
   79         "xmphy",
   80         xmphy_methods,
   81         sizeof(struct mii_softc)
   82 };
   83 
   84 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0);
   85 
   86 static int      xmphy_service(struct mii_softc *, struct mii_data *, int);
   87 static void     xmphy_status(struct mii_softc *);
   88 static int      xmphy_mii_phy_auto(struct mii_softc *);
   89 
   90 static int
   91 xmphy_probe(dev)
   92         device_t                dev;
   93 {
   94         struct mii_attach_args *ma;
   95 
   96         ma = device_get_ivars(dev);
   97 
   98         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI &&
   99             MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) {
  100                 device_set_desc(dev, MII_STR_XAQTI_XMACII);
  101                 return(0);
  102         }
  103 
  104         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO &&
  105             MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) {
  106                 device_set_desc(dev, MII_STR_JATO_BASEX);
  107                 return(0);
  108         }
  109 
  110         return(ENXIO);
  111 }
  112 
  113 static int
  114 xmphy_attach(dev)
  115         device_t                dev;
  116 {
  117         struct mii_softc *sc;
  118         struct mii_attach_args *ma;
  119         struct mii_data *mii;
  120         const char *sep = "";
  121 
  122         sc = device_get_softc(dev);
  123         ma = device_get_ivars(dev);
  124         sc->mii_dev = device_get_parent(dev);
  125         mii = device_get_softc(sc->mii_dev);
  126         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  127 
  128         sc->mii_inst = mii->mii_instance;
  129         sc->mii_phy = ma->mii_phyno;
  130         sc->mii_service = xmphy_service;
  131         sc->mii_pdata = mii;
  132 
  133         sc->mii_flags |= MIIF_NOISOLATE;
  134         mii->mii_instance++;
  135 
  136 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  137 #define PRINT(s)        printf("%s%s", sep, s); sep = ", "
  138 
  139         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  140             BMCR_ISO);
  141 #if 0
  142         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
  143             BMCR_LOOP|BMCR_S100);
  144 #endif
  145 
  146         mii_phy_reset(sc);
  147 
  148         device_printf(dev, " ");
  149         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst),
  150             XMPHY_BMCR_FDX);
  151         PRINT("1000baseSX");
  152         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0);
  153         PRINT("1000baseSX-FDX");
  154         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
  155         PRINT("auto");
  156 
  157         printf("\n");
  158 #undef ADD
  159 #undef PRINT
  160 
  161         MIIBUS_MEDIAINIT(sc->mii_dev);
  162         return(0);
  163 }
  164 
  165 static int
  166 xmphy_service(sc, mii, cmd)
  167         struct mii_softc *sc;
  168         struct mii_data *mii;
  169         int cmd;
  170 {
  171         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  172         int reg;
  173 
  174         switch (cmd) {
  175         case MII_POLLSTAT:
  176                 /*
  177                  * If we're not polling our PHY instance, just return.
  178                  */
  179                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  180                         return (0);
  181                 break;
  182 
  183         case MII_MEDIACHG:
  184                 /*
  185                  * If the media indicates a different PHY instance,
  186                  * isolate ourselves.
  187                  */
  188                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  189                         reg = PHY_READ(sc, MII_BMCR);
  190                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  191                         return (0);
  192                 }
  193 
  194                 /*
  195                  * If the interface is not up, don't do anything.
  196                  */
  197                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  198                         break;
  199 
  200                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  201                 case IFM_AUTO:
  202 #ifdef foo
  203                         /*
  204                          * If we're already in auto mode, just return.
  205                          */
  206                         if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
  207                                 return (0);
  208 #endif
  209                         (void) xmphy_mii_phy_auto(sc);
  210                         break;
  211                 case IFM_1000_SX:
  212                         mii_phy_reset(sc);
  213                         if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
  214                                 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
  215                                 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
  216                         } else {
  217                                 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
  218                                 PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
  219                         }
  220                         break;
  221                 case IFM_100_T4:
  222                 case IFM_100_TX:
  223                 case IFM_10_T:
  224                 default:
  225                         return (EINVAL);
  226                 }
  227                 break;
  228 
  229         case MII_TICK:
  230                 /*
  231                  * If we're not currently selected, just return.
  232                  */
  233                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  234                         return (0);
  235 
  236                 /*
  237                  * Is the interface even up?
  238                  */
  239                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  240                         return (0);
  241 
  242                 /*
  243                  * Only used for autonegotiation.
  244                  */
  245                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  246                         break;
  247 
  248                 /*
  249                  * Check to see if we have link.  If we do, we don't
  250                  * need to restart the autonegotiation process.  Read
  251                  * the BMSR twice in case it's latched.
  252                  */
  253                 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  254                 if (reg & BMSR_LINK)
  255                         break;
  256 
  257                 /*
  258                  * Only retry autonegotiation every 5 seconds.
  259                  */
  260                 if (++sc->mii_ticks != 5)
  261                         return (0);
  262                 
  263                 sc->mii_ticks = 0;
  264 
  265                 mii_phy_reset(sc);
  266                 xmphy_mii_phy_auto(sc);
  267                 return(0);
  268         }
  269 
  270         /* Update the media status. */
  271         xmphy_status(sc);
  272 
  273         /* Callback if something changed. */
  274         mii_phy_update(sc, cmd);
  275         return (0);
  276 }
  277 
  278 static void
  279 xmphy_status(sc)
  280         struct mii_softc *sc;
  281 {
  282         struct mii_data *mii = sc->mii_pdata;
  283         int bmsr, bmcr, anlpar;
  284 
  285         mii->mii_media_status = IFM_AVALID;
  286         mii->mii_media_active = IFM_ETHER;
  287 
  288         bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
  289             PHY_READ(sc, XMPHY_MII_BMSR);
  290         if (bmsr & XMPHY_BMSR_LINK)
  291                 mii->mii_media_status |= IFM_ACTIVE;
  292 
  293         /* Do dummy read of extended status register. */
  294         bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
  295 
  296         bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
  297 
  298         if (bmcr & XMPHY_BMCR_LOOP)
  299                 mii->mii_media_active |= IFM_LOOP;
  300 
  301 
  302         if (bmcr & XMPHY_BMCR_AUTOEN) {
  303                 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
  304                         if (bmsr & XMPHY_BMSR_LINK) {
  305                                 mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
  306                                 return;
  307                         }
  308                         /* Erg, still trying, I guess... */
  309                         mii->mii_media_active |= IFM_NONE;
  310                         return;
  311                 }
  312 
  313                 mii->mii_media_active |= IFM_1000_SX;
  314                 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
  315                     PHY_READ(sc, XMPHY_MII_ANLPAR);
  316                 if (anlpar & XMPHY_ANLPAR_FDX)
  317                         mii->mii_media_active |= IFM_FDX;
  318                 else
  319                         mii->mii_media_active |= IFM_HDX;
  320                 return;
  321         }
  322 
  323         mii->mii_media_active |= IFM_1000_SX;
  324         if (bmcr & XMPHY_BMCR_FDX)
  325                 mii->mii_media_active |= IFM_FDX;
  326         else
  327                 mii->mii_media_active |= IFM_HDX;
  328 
  329         return;
  330 }
  331 
  332 
  333 static int
  334 xmphy_mii_phy_auto(mii)
  335         struct mii_softc *mii;
  336 {
  337         int anar = 0;
  338 
  339         anar = PHY_READ(mii, XMPHY_MII_ANAR);
  340         anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX;
  341         PHY_WRITE(mii, XMPHY_MII_ANAR, anar);
  342         DELAY(1000);
  343         PHY_WRITE(mii, XMPHY_MII_BMCR,
  344             XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
  345 
  346         return (EJUSTRETURN);
  347 }
Cache object: b65a8de2bc3fc0af284dafbdeac8d406
[ 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/mii/xmphy.c

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