acphy.c

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    1 /*-
    2  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to The NetBSD Foundation
    6  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    7  * NASA Ames Research Center.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed by the NetBSD
   20  *      Foundation, Inc. and its contributors.
   21  * 4. Neither the name of The NetBSD Foundation nor the names of its
   22  *    contributors may be used to endorse or promote products derived
   23  *    from this software without specific prior written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   26  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37 
   38 /*-
   39  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   40  *
   41  * Redistribution and use in source and binary forms, with or without
   42  * modification, are permitted provided that the following conditions
   43  * are met:
   44  * 1. Redistributions of source code must retain the above copyright
   45  *    notice, this list of conditions and the following disclaimer.
   46  * 2. Redistributions in binary form must reproduce the above copyright
   47  *    notice, this list of conditions and the following disclaimer in the
   48  *    documentation and/or other materials provided with the distribution.
   49  * 3. All advertising materials mentioning features or use of this software
   50  *    must display the following acknowledgement:
   51  *      This product includes software developed by Manuel Bouyer.
   52  * 4. The name of the author may not be used to endorse or promote products
   53  *    derived from this software without specific prior written permission.
   54  *
   55  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   56  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   57  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   58  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   59  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   60  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   64  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   65  */
   66 
   67 #include <sys/cdefs.h>
   68 __FBSDID("$FreeBSD$");
   69 
   70 /*
   71  * Driver for Altima AC101 10/100 PHY
   72  */
   73 
   74 #include <sys/param.h>
   75 #include <sys/systm.h>
   76 #include <sys/kernel.h>
   77 #include <sys/socket.h>
   78 #include <sys/errno.h>
   79 #include <sys/module.h>
   80 #include <sys/bus.h>
   81 
   82 #include <net/if.h>
   83 #include <net/if_media.h>
   84 
   85 #include <dev/mii/mii.h>
   86 #include <dev/mii/miivar.h>
   87 #include "miidevs.h"
   88 
   89 #include <dev/mii/acphyreg.h>
   90 
   91 #include "miibus_if.h"
   92 
   93 static int acphy_probe(device_t);
   94 static int acphy_attach(device_t);
   95 
   96 static device_method_t acphy_methods[] = {
   97         /* device interface */
   98         DEVMETHOD(device_probe,         acphy_probe),
   99         DEVMETHOD(device_attach,        acphy_attach),
  100         DEVMETHOD(device_detach,        mii_phy_detach),
  101         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  102         { 0, 0 }
  103 };
  104 
  105 static devclass_t acphy_devclass;
  106 
  107 static driver_t acphy_driver = {
  108         "acphy",
  109         acphy_methods,
  110         sizeof(struct mii_softc)
  111 };
  112 
  113 DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, 0, 0);
  114 
  115 static int      acphy_service(struct mii_softc *, struct mii_data *, int);
  116 static void     acphy_reset(struct mii_softc *);
  117 static void     acphy_status(struct mii_softc *);
  118 
  119 static int
  120 acphy_probe(dev)
  121         device_t                dev;
  122 {
  123         struct mii_attach_args *ma;
  124 
  125         ma = device_get_ivars(dev);
  126 
  127         if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxALTIMA &&
  128             MII_MODEL(ma->mii_id2) == MII_MODEL_xxALTIMA_AC101) {
  129                 device_set_desc(dev, MII_STR_xxALTIMA_AC101);
  130         } else if(MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxALTIMA &&
  131                   MII_MODEL(ma->mii_id2) == MII_MODEL_xxALTIMA_AC101L) {
  132                 device_set_desc(dev, MII_STR_xxALTIMA_AC101L);
  133         } else 
  134                 return (ENXIO);
  135 
  136         return (0);
  137 }
  138 
  139 static int
  140 acphy_attach(dev)
  141         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         sc->mii_dev = device_get_parent(dev);
  150         mii = device_get_softc(sc->mii_dev);
  151         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  152 
  153         sc->mii_inst = mii->mii_instance;
  154         sc->mii_phy = ma->mii_phyno;
  155         sc->mii_service = acphy_service;
  156         sc->mii_pdata = mii;
  157         sc->mii_flags |= MIIF_NOISOLATE;
  158 
  159         acphy_reset(sc);
  160 
  161         mii->mii_instance++;
  162 
  163         sc->mii_capabilities =
  164             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  165         device_printf(dev, " ");
  166         mii_add_media(sc);
  167         printf("\n");
  168 
  169         MIIBUS_MEDIAINIT(sc->mii_dev);
  170         return (0);
  171 }
  172 
  173 static int
  174 acphy_service(sc, mii, cmd)
  175         struct mii_softc *sc;
  176         struct mii_data *mii;
  177         int cmd;
  178 {
  179         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  180         int reg;
  181 
  182         /*
  183          * If we're not selected, then do nothing, just isolate and power
  184          * down, if changing media.
  185          */
  186         if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  187                 if (cmd == MII_MEDIACHG) {
  188                         reg = PHY_READ(sc, MII_BMCR);
  189                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN);
  190                 }
  191 
  192                 return (0);
  193         }
  194 
  195         switch (cmd) {
  196         case MII_POLLSTAT:
  197                 break;
  198 
  199         case MII_MEDIACHG:
  200                 /*
  201                  * If the interface is not up, don't do anything.
  202                  */
  203                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  204                         break;
  205 
  206                 /* Wake & deisolate up if necessary */
  207                 reg = PHY_READ(sc, MII_BMCR);
  208                 if (reg & (BMCR_ISO | BMCR_PDOWN)) 
  209                         PHY_WRITE(sc, MII_BMCR, reg & ~(BMCR_ISO | BMCR_PDOWN));
  210 
  211                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  212                 case IFM_AUTO:
  213                         /*
  214                          * If we're already in auto mode, just return.
  215                          */
  216                         if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
  217                                 return (0);
  218 
  219                         (void) mii_phy_auto(sc);
  220                         break;
  221 
  222                 default:
  223                         /*
  224                          * BMCR data is stored in the ifmedia entry.
  225                          */
  226                         PHY_WRITE(sc, MII_ANAR,
  227                             mii_anar(ife->ifm_media));
  228                         PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
  229                 }
  230                 break;
  231 
  232         case MII_TICK:
  233                 /*
  234                  * Is the interface even up?
  235                  */
  236                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  237                         return (0);
  238 
  239                 /*
  240                  * Only used for autonegotiation.
  241                  */
  242                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  243                         break;
  244 
  245                 /*
  246                  * This PHY's autonegotiation doesn't need to be kicked.
  247                  */
  248                 break;
  249         }
  250 
  251         /* Update the media status. */
  252         acphy_status(sc);
  253 
  254         /* Callback if something changed. */
  255         mii_phy_update(sc, cmd);
  256         return (0);
  257 }
  258 
  259 static void
  260 acphy_status(sc)
  261         struct mii_softc *sc;
  262 {
  263         struct mii_data *mii = sc->mii_pdata;
  264         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  265         int bmsr, bmcr, diag;
  266 
  267         mii->mii_media_status = IFM_AVALID;
  268         mii->mii_media_active = IFM_ETHER;
  269 
  270         bmsr = PHY_READ(sc, MII_BMSR) |
  271             PHY_READ(sc, MII_BMSR);
  272         if (bmsr & BMSR_LINK)
  273                 mii->mii_media_status |= IFM_ACTIVE;
  274 
  275         bmcr = PHY_READ(sc, MII_BMCR);
  276         if (bmcr & BMCR_ISO) {
  277                 mii->mii_media_active |= IFM_NONE;
  278                 mii->mii_media_status = 0;
  279                 return;
  280         }
  281 
  282         if (bmcr & BMCR_LOOP)
  283                 mii->mii_media_active |= IFM_LOOP;
  284 
  285         if (bmcr & BMCR_AUTOEN) {
  286                 if ((bmsr & BMSR_ACOMP) == 0) {
  287                         /* Erg, still trying, I guess... */
  288                         mii->mii_media_active |= IFM_NONE;
  289                         return;
  290                 }
  291                 diag = PHY_READ(sc, MII_ACPHY_DIAG);
  292                 if (diag & AC_DIAG_SPEED)
  293                         mii->mii_media_active |= IFM_100_TX;
  294                 else
  295                         mii->mii_media_active |= IFM_10_T;
  296 
  297                 if (diag & AC_DIAG_DUPLEX)
  298                         mii->mii_media_active |= IFM_FDX;
  299         } else
  300                 mii->mii_media_active = ife->ifm_media;
  301 }
  302 
  303 static void
  304 acphy_reset(sc)
  305         struct mii_softc *sc;
  306 {
  307 
  308         mii_phy_reset(sc);
  309         PHY_WRITE(sc, MII_ACPHY_INT, 0);
  310 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/acphy.c

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