bmtphy.c

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    1 /*-
    2  * Copyright (c) 1998, 1999, 2000, 2001 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  *
   18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /*
   32  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   33  *
   34  * Redistribution and use in source and binary forms, with or without
   35  * modification, are permitted provided that the following conditions
   36  * are met:
   37  * 1. Redistributions of source code must retain the above copyright
   38  *    notice, this list of conditions and the following disclaimer.
   39  * 2. Redistributions in binary form must reproduce the above copyright
   40  *    notice, this list of conditions and the following disclaimer in the
   41  *    documentation and/or other materials provided with the distribution.
   42  *
   43  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   44  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   45  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   46  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   47  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   48  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   49  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   50  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   51  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   52  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   53  *
   54  *      from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp
   55  *
   56  */
   57 
   58 #include <sys/cdefs.h>
   59 __FBSDID("$FreeBSD$");
   60 
   61 /*
   62  * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs.  This also
   63  * drives the PHY on the 3Com 3c905C.  The 3c905C's PHY is described in
   64  * the 3c905C data sheet.
   65  */
   66 
   67 #include <sys/param.h>
   68 #include <sys/systm.h>
   69 #include <sys/kernel.h>
   70 #include <sys/module.h>
   71 #include <sys/socket.h>
   72 #include <sys/bus.h>
   73 
   74 #include <net/if.h>
   75 #include <net/if_media.h>
   76 
   77 #include <dev/mii/mii.h>
   78 #include <dev/mii/miivar.h>
   79 #include "miidevs.h"
   80 
   81 #include <dev/mii/bmtphyreg.h>
   82 
   83 #include "miibus_if.h"
   84 
   85 static int      bmtphy_probe(device_t);
   86 static int      bmtphy_attach(device_t);
   87 
   88 struct bmtphy_softc {
   89         struct mii_softc mii_sc;
   90         int mii_model;
   91 };
   92 
   93 static device_method_t bmtphy_methods[] = {
   94         /* Device interface */
   95         DEVMETHOD(device_probe,         bmtphy_probe),
   96         DEVMETHOD(device_attach,        bmtphy_attach),
   97         DEVMETHOD(device_detach,        mii_phy_detach),
   98         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   99         DEVMETHOD_END
  100 };
  101 
  102 static devclass_t       bmtphy_devclass;
  103 
  104 static driver_t bmtphy_driver = {
  105         "bmtphy",
  106         bmtphy_methods,
  107         sizeof(struct bmtphy_softc)
  108 };
  109 
  110 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0);
  111 
  112 static int      bmtphy_service(struct mii_softc *, struct mii_data *, int);
  113 static void     bmtphy_status(struct mii_softc *);
  114 static void     bmtphy_reset(struct mii_softc *);
  115 
  116 static const struct mii_phydesc bmtphys_dp[] = {
  117         MII_PHY_DESC(BROADCOM, BCM4401),
  118         MII_PHY_DESC(BROADCOM, BCM5201),
  119         MII_PHY_DESC(BROADCOM, BCM5214),
  120         MII_PHY_DESC(BROADCOM, BCM5221),
  121         MII_PHY_DESC(BROADCOM, BCM5222),
  122         MII_PHY_END
  123 };
  124 
  125 static const struct mii_phydesc bmtphys_lp[] = {
  126         MII_PHY_DESC(BROADCOM, 3C905B),
  127         MII_PHY_DESC(BROADCOM, 3C905C),
  128         MII_PHY_END
  129 };
  130 
  131 static int
  132 bmtphy_probe(device_t dev)
  133 {
  134         int     rval;
  135 
  136         /* Let exphy(4) take precedence for these. */
  137         rval = mii_phy_dev_probe(dev, bmtphys_lp, BUS_PROBE_LOW_PRIORITY);
  138         if (rval <= 0)
  139                 return (rval);
  140 
  141         return (mii_phy_dev_probe(dev, bmtphys_dp, BUS_PROBE_DEFAULT));
  142 }
  143 
  144 static int
  145 bmtphy_attach(device_t dev)
  146 {
  147         struct bmtphy_softc *bsc;
  148         struct mii_softc *sc;
  149         struct mii_attach_args *ma;
  150         struct mii_data *mii;
  151 
  152         bsc = device_get_softc(dev);
  153         sc = &bsc->mii_sc;
  154         ma = device_get_ivars(dev);
  155         sc->mii_dev = device_get_parent(dev);
  156         mii = ma->mii_data;
  157         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  158 
  159         sc->mii_flags = miibus_get_flags(dev);
  160         sc->mii_inst = mii->mii_instance++;
  161         sc->mii_phy = ma->mii_phyno;
  162         sc->mii_service = bmtphy_service;
  163         sc->mii_pdata = mii;
  164 
  165         sc->mii_flags |= MIIF_NOMANPAUSE;
  166 
  167         bsc->mii_model = MII_MODEL(ma->mii_id2);
  168 
  169         bmtphy_reset(sc);
  170 
  171         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  172         device_printf(dev, " ");
  173         mii_phy_add_media(sc);
  174         printf("\n");
  175 
  176         MIIBUS_MEDIAINIT(sc->mii_dev);
  177 
  178         return (0);
  179 }
  180 
  181 static int
  182 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  183 {
  184 
  185         switch (cmd) {
  186         case MII_POLLSTAT:
  187                 break;
  188 
  189         case MII_MEDIACHG:
  190                 /*
  191                  * If the interface is not up, don't do anything.
  192                  */
  193                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  194                         break;
  195 
  196                 mii_phy_setmedia(sc);
  197                 break;
  198 
  199         case MII_TICK:
  200                 if (mii_phy_tick(sc) == EJUSTRETURN)
  201                         return (0);
  202                 break;
  203         }
  204 
  205         /* Update the media status. */
  206         bmtphy_status(sc);
  207 
  208         /* Callback if something changed. */
  209         mii_phy_update(sc, cmd);
  210         return (0);
  211 }
  212 
  213 static void
  214 bmtphy_status(struct mii_softc *sc)
  215 {
  216         struct mii_data *mii;
  217         struct ifmedia_entry *ife;
  218         int bmsr, bmcr, aux_csr;
  219 
  220         mii = sc->mii_pdata;
  221         ife = mii->mii_media.ifm_cur;
  222 
  223         mii->mii_media_status = IFM_AVALID;
  224         mii->mii_media_active = IFM_ETHER;
  225 
  226         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  227 
  228         if (bmsr & BMSR_LINK)
  229                 mii->mii_media_status |= IFM_ACTIVE;
  230 
  231         bmcr = PHY_READ(sc, MII_BMCR);
  232         if (bmcr & BMCR_ISO) {
  233                 mii->mii_media_active |= IFM_NONE;
  234                 mii->mii_media_status = 0;
  235                 return;
  236         }
  237 
  238         if (bmcr & BMCR_LOOP)
  239                 mii->mii_media_active |= IFM_LOOP;
  240 
  241         if (bmcr & BMCR_AUTOEN) {
  242                 /*
  243                  * The media status bits are only valid if autonegotiation
  244                  * has completed (or it's disabled).
  245                  */
  246                 if ((bmsr & BMSR_ACOMP) == 0) {
  247                         /* Erg, still trying, I guess... */
  248                         mii->mii_media_active |= IFM_NONE;
  249                         return;
  250                 }
  251 
  252                 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR);
  253                 if (aux_csr & AUX_CSR_SPEED)
  254                         mii->mii_media_active |= IFM_100_TX;
  255                 else
  256                         mii->mii_media_active |= IFM_10_T;
  257                 if (aux_csr & AUX_CSR_FDX)
  258                         mii->mii_media_active |=
  259                             IFM_FDX | mii_phy_flowstatus(sc);
  260                 else
  261                         mii->mii_media_active |= IFM_HDX;
  262         } else
  263                 mii->mii_media_active = ife->ifm_media;
  264 }
  265 
  266 static void
  267 bmtphy_reset(struct mii_softc *sc)
  268 {
  269         struct bmtphy_softc *bsc;
  270         u_int16_t data;
  271 
  272         bsc = (struct bmtphy_softc *)sc;
  273 
  274         mii_phy_reset(sc);
  275 
  276         if (bsc->mii_model == MII_MODEL_BROADCOM_BCM5221) {
  277                 /* Enable shadow register mode. */
  278                 data = PHY_READ(sc, 0x1f);
  279                 PHY_WRITE(sc, 0x1f, data | 0x0080);
  280 
  281                 /* Enable APD (Auto PowerDetect). */
  282                 data = PHY_READ(sc, MII_BMTPHY_AUX2);
  283                 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020);
  284 
  285                 /* Enable clocks across APD for Auto-MDIX functionality. */
  286                 data = PHY_READ(sc, MII_BMTPHY_INTR);
  287                 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004);
  288 
  289                 /* Disable shadow register mode. */
  290                 data = PHY_READ(sc, 0x1f);
  291                 PHY_WRITE(sc, 0x1f, data & ~0x0080);
  292         }
  293 }
Cache object: 7933507211f3fdd0f9e187b3a4ebb5de
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/bmtphy.c

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