lxtphy.c

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    1 /*      OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate Exp    */
    2 /*      NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp         */
    3 
    4 /*-
    5  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to The NetBSD Foundation
    9  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   10  * NASA Ames Research Center.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. All advertising materials mentioning features or use of this software
   21  *    must display the following acknowledgement:
   22  *      This product includes software developed by the NetBSD
   23  *      Foundation, Inc. and its contributors.
   24  * 4. Neither the name of The NetBSD Foundation nor the names of its
   25  *    contributors may be used to endorse or promote products derived
   26  *    from this software without specific prior written permission.
   27  *
   28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   38  * POSSIBILITY OF SUCH DAMAGE.
   39  */
   40 
   41 /*-
   42  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   43  *
   44  * Redistribution and use in source and binary forms, with or without
   45  * modification, are permitted provided that the following conditions
   46  * are met:
   47  * 1. Redistributions of source code must retain the above copyright
   48  *    notice, this list of conditions and the following disclaimer.
   49  * 2. Redistributions in binary form must reproduce the above copyright
   50  *    notice, this list of conditions and the following disclaimer in the
   51  *    documentation and/or other materials provided with the distribution.
   52  * 3. All advertising materials mentioning features or use of this software
   53  *    must display the following acknowledgement:
   54  *      This product includes software developed by Manuel Bouyer.
   55  * 4. The name of the author may not be used to endorse or promote products
   56  *    derived from this software without specific prior written permission.
   57  *
   58  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   59  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   60  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   61  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   62  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   63  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   64  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   65  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   66  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   67  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   68  */
   69 
   70 #include <sys/cdefs.h>
   71 __FBSDID("$FreeBSD: releng/6.0/sys/dev/mii/lxtphy.c 139749 2005-01-06 01:43:34Z imp $");
   72 
   73 /*
   74  * driver for Level One's LXT-970 ethernet 10/100 PHY
   75  * datasheet from www.level1.com
   76  */
   77 
   78 #include <sys/param.h>
   79 #include <sys/systm.h>
   80 #include <sys/kernel.h>
   81 #include <sys/socket.h>
   82 #include <sys/errno.h>
   83 #include <sys/module.h>
   84 #include <sys/bus.h>
   85 
   86 #include <net/if.h>
   87 #include <net/if_media.h>
   88 
   89 #include <dev/mii/mii.h>
   90 #include <dev/mii/miivar.h>
   91 #include "miidevs.h"
   92 
   93 #include <dev/mii/lxtphyreg.h>
   94 
   95 #include "miibus_if.h"
   96 
   97 static int lxtphy_probe(device_t);
   98 static int lxtphy_attach(device_t);
   99 
  100 static device_method_t lxtphy_methods[] = {
  101         /* device interface */
  102         DEVMETHOD(device_probe,         lxtphy_probe),
  103         DEVMETHOD(device_attach,        lxtphy_attach),
  104         DEVMETHOD(device_detach,        mii_phy_detach),
  105         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  106         { 0, 0 }
  107 };
  108 
  109 static devclass_t lxtphy_devclass;
  110 
  111 static driver_t lxtphy_driver = {
  112         "lxtphy",
  113         lxtphy_methods,
  114         sizeof(struct mii_softc)
  115 };
  116 
  117 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0);
  118 
  119 static int      lxtphy_service(struct mii_softc *, struct mii_data *, int);
  120 static void     lxtphy_status(struct mii_softc *);
  121 static void     lxtphy_set_tp(struct mii_softc *);
  122 static void     lxtphy_set_fx(struct mii_softc *);
  123 
  124 static int
  125 lxtphy_probe(dev)
  126         device_t                dev;
  127 {
  128         struct mii_attach_args *ma;
  129 
  130         ma = device_get_ivars(dev);
  131 
  132         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 &&
  133             MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) {
  134                 device_set_desc(dev, MII_STR_xxLEVEL1_LXT970);
  135         } else
  136                 return (ENXIO);
  137 
  138         return (0);
  139 }
  140 
  141 static int
  142 lxtphy_attach(dev)
  143         device_t                dev;
  144 {
  145         struct mii_softc *sc;
  146         struct mii_attach_args *ma;
  147         struct mii_data *mii;
  148 
  149         sc = device_get_softc(dev);
  150         ma = device_get_ivars(dev);
  151         sc->mii_dev = device_get_parent(dev);
  152         mii = device_get_softc(sc->mii_dev);
  153         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  154 
  155         sc->mii_inst = mii->mii_instance;
  156         sc->mii_phy = ma->mii_phyno;
  157         sc->mii_service = lxtphy_service;
  158         sc->mii_pdata = mii;
  159         sc->mii_flags |= MIIF_NOISOLATE;
  160 
  161         mii_phy_reset(sc);
  162 
  163         mii->mii_instance++;
  164 
  165         sc->mii_capabilities =
  166             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  167         device_printf(dev, " ");
  168 
  169 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  170         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  171             BMCR_ISO);
  172         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst),
  173             BMCR_S100);
  174         printf("100baseFX, ");
  175         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst),
  176             BMCR_S100|BMCR_FDX);
  177         printf("100baseFX-FDX, ");
  178 #undef ADD
  179 
  180         mii_add_media(sc);
  181         printf("\n");
  182 
  183         MIIBUS_MEDIAINIT(sc->mii_dev);
  184         return(0);
  185 }
  186 
  187 static int
  188 lxtphy_service(sc, mii, cmd)
  189         struct mii_softc *sc;
  190         struct mii_data *mii;
  191         int cmd;
  192 {
  193         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  194         int reg;
  195 
  196         switch (cmd) {
  197         case MII_POLLSTAT:
  198                 /*
  199                  * If we're not polling our PHY instance, just return.
  200                  */
  201                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  202                         return (0);
  203                 break;
  204 
  205         case MII_MEDIACHG:
  206                 /*
  207                  * If the media indicates a different PHY instance,
  208                  * isolate ourselves.
  209                  */
  210                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  211                         reg = PHY_READ(sc, MII_BMCR);
  212                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  213                         return (0);
  214                 }
  215 
  216                 /*
  217                  * If the interface is not up, don't do anything.
  218                  */
  219                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  220                         break;
  221 
  222                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  223                 case IFM_AUTO:
  224                         /*
  225                          * If we're already in auto mode, just return.
  226                          */
  227                         if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
  228                                 return (0);
  229 
  230                         lxtphy_set_tp(sc);
  231 
  232                         (void) mii_phy_auto(sc);
  233                         break;
  234                 case IFM_100_T4:
  235                         /*
  236                          * XXX Not supported as a manual setting right now.
  237                          */
  238                         return (EINVAL);
  239 
  240                 case IFM_100_FX:
  241                         lxtphy_set_fx(sc);
  242                         /* XXX: fall though intentional ?? */
  243                 default:
  244                         /*
  245                          * BMCR data is stored in the ifmedia entry.
  246                          */
  247                         PHY_WRITE(sc, MII_ANAR,
  248                             mii_anar(ife->ifm_media));
  249                         PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
  250                 }
  251                 break;
  252 
  253         case MII_TICK:
  254                 /*
  255                  * If we're not currently selected, just return.
  256                  */
  257                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  258                         return (0);
  259                 if (mii_phy_tick(sc) == EJUSTRETURN)
  260                         return (0);
  261                 break;
  262         }
  263 
  264         /* Update the media status. */
  265         lxtphy_status(sc);
  266 
  267         /* Callback if something changed. */
  268         mii_phy_update(sc, cmd);
  269         return (0);
  270 }
  271 
  272 static void
  273 lxtphy_status(sc)
  274         struct mii_softc *sc;
  275 {
  276         struct mii_data *mii = sc->mii_pdata;
  277         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  278         int bmcr, bmsr, csr;
  279 
  280         mii->mii_media_status = IFM_AVALID;
  281         mii->mii_media_active = IFM_ETHER;
  282 
  283         /*
  284          * Get link status from the CSR; we need to read the CSR
  285          * for media type anyhow, and the link status in the CSR
  286          * doens't latch, so fewer register reads are required.
  287          */
  288         csr = PHY_READ(sc, MII_LXTPHY_CSR);
  289         if (csr & CSR_LINK)
  290                 mii->mii_media_status |= IFM_ACTIVE;
  291 
  292         bmcr = PHY_READ(sc, MII_BMCR);
  293         if (bmcr & BMCR_ISO) {
  294                 mii->mii_media_active |= IFM_NONE;
  295                 mii->mii_media_status = 0;
  296                 return;
  297         }
  298 
  299         if (bmcr & BMCR_LOOP)
  300                 mii->mii_media_active |= IFM_LOOP;
  301 
  302         if (bmcr & BMCR_AUTOEN) {
  303                 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  304                 if ((bmsr & BMSR_ACOMP) == 0) {
  305                         /* Erg, still trying, I guess... */
  306                         mii->mii_media_active |= IFM_NONE;
  307                         return;
  308                 }
  309                 if (csr & CSR_SPEED)
  310                         mii->mii_media_active |= IFM_100_TX;
  311                 else
  312                         mii->mii_media_active |= IFM_10_T;
  313                 if (csr & CSR_DUPLEX)
  314                         mii->mii_media_active |= IFM_FDX;
  315         } else
  316                 mii->mii_media_active = ife->ifm_media;
  317 }
  318 
  319 static void
  320 lxtphy_set_tp(sc)
  321         struct mii_softc *sc;
  322 {
  323         int cfg;
  324 
  325         cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
  326         cfg &= ~CONFIG_100BASEFX;
  327         PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
  328 }
  329 
  330 static void
  331 lxtphy_set_fx(sc)
  332         struct mii_softc *sc;
  333 {
  334         int cfg;
  335 
  336         cfg = PHY_READ(sc, MII_LXTPHY_CONFIG);
  337         cfg |= CONFIG_100BASEFX;
  338         PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg);
  339 }
  340
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/lxtphy.c

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