inphy.c

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    1 /*-
    2  * Copyright (c) 2001 Jonathan Lemon
    3  * 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. Neither the name of the author nor the names of any co-contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: src/sys/dev/mii/inphy.c,v 1.14 2004/05/30 17:57:40 phk Exp $
   30  */
   31 
   32 /*
   33  * driver for Intel 82553 and 82555 PHYs
   34  */
   35 
   36 #include <sys/param.h>
   37 #include <sys/systm.h>
   38 #include <sys/kernel.h>
   39 #include <sys/socket.h>
   40 #include <sys/bus.h>
   41 
   42 #include <net/if.h>
   43 #include <net/if_media.h>
   44 
   45 #include "mii.h"
   46 #include "miivar.h"
   47 #include "miidevs.h"
   48 
   49 #include "inphyreg.h"
   50 
   51 #include "miibus_if.h"
   52 
   53 static int      inphy_probe(device_t dev);
   54 static int      inphy_attach(device_t dev);
   55 static int      inphy_service(struct mii_softc *, struct mii_data *, int);
   56 static void     inphy_status(struct mii_softc *);
   57 
   58 static device_method_t inphy_methods[] = {
   59         /* device interface */
   60         DEVMETHOD(device_probe,         inphy_probe),
   61         DEVMETHOD(device_attach,        inphy_attach),
   62         DEVMETHOD(device_detach,        ukphy_detach),
   63         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   64         DEVMETHOD_END
   65 };
   66 
   67 static const struct mii_phydesc inphys[] = {
   68         MII_PHYDESC(xxINTEL,    I82553AB),      /* Intel 82553 A/B steppings */
   69         MII_PHYDESC(INTEL,      I82555),
   70         MII_PHYDESC(INTEL,      I82553C),
   71         MII_PHYDESC(INTEL,      I82562EM),
   72         MII_PHYDESC(INTEL,      I82562ET),
   73         MII_PHYDESC_NULL
   74 };
   75 
   76 static devclass_t inphy_devclass;
   77 
   78 static driver_t inphy_driver = {
   79         "inphy",
   80         inphy_methods,
   81         sizeof(struct mii_softc)
   82 };
   83 
   84 DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, NULL, NULL);
   85 
   86 static int
   87 inphy_probe(device_t dev)
   88 {
   89         struct mii_attach_args *ma = device_get_ivars(dev);
   90         const struct mii_phydesc *mpd;
   91 
   92         mpd = mii_phy_match(ma, inphys);
   93         if (mpd != NULL) {
   94                 device_set_desc(dev, mpd->mpd_name);
   95                 return (0);
   96         }
   97         return (ENXIO);
   98 }
   99 
  100 static int
  101 inphy_attach(device_t dev)
  102 {
  103         struct mii_softc *sc;
  104         struct mii_attach_args *ma;
  105         struct mii_data *mii;
  106 
  107         sc = device_get_softc(dev);
  108         ma = device_get_ivars(dev);
  109         mii_softc_init(sc, ma);
  110         sc->mii_dev = device_get_parent(dev);
  111         mii = device_get_softc(sc->mii_dev);
  112         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  113 
  114         sc->mii_inst = mii->mii_instance;
  115         sc->mii_service = inphy_service;
  116         sc->mii_pdata = mii;
  117         mii->mii_instance++;
  118 
  119 #if 0
  120         sc->mii_flags |= MIIF_NOISOLATE;
  121 #endif
  122 
  123         ifmedia_add(&mii->mii_media,
  124             IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
  125             MII_MEDIA_100_TX, NULL);
  126 
  127         mii_phy_reset(sc);
  128 
  129         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  130 
  131         device_printf(dev, " ");
  132         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  133                 kprintf("no media present");
  134         else
  135                 mii_phy_add_media(sc);
  136         kprintf("\n");
  137 
  138         MIIBUS_MEDIAINIT(sc->mii_dev);
  139         return (0);
  140 }
  141 
  142 static int
  143 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  144 {
  145         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  146         int reg;
  147 
  148         switch (cmd) {
  149         case MII_POLLSTAT:
  150                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  151                         return (0);
  152                 break;
  153 
  154         case MII_MEDIACHG:
  155                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  156                         reg = PHY_READ(sc, MII_BMCR);
  157                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  158                         return (0);
  159                 }
  160 
  161                 /*
  162                  * If the interface is not up, don't do anything.
  163                  */
  164                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  165                         break;
  166 
  167                 mii_phy_set_media(sc);
  168                 break;
  169 
  170         case MII_TICK:
  171                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  172                         return (0);
  173 
  174                 if (mii_phy_tick(sc) == EJUSTRETURN)
  175                         return (0);
  176                 break;
  177         }
  178 
  179         /* Update the media status. */
  180         inphy_status(sc);
  181 
  182         /* Callback if something changed. */
  183         mii_phy_update(sc, cmd);
  184         return (0);
  185 }
  186 
  187 static void
  188 inphy_status(struct mii_softc *sc)
  189 {
  190         struct mii_data *mii = sc->mii_pdata;
  191         int bmsr, bmcr, scr;
  192 
  193         mii->mii_media_status = IFM_AVALID;
  194         mii->mii_media_active = IFM_ETHER;
  195 
  196         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  197         if (bmsr & BMSR_LINK)
  198                 mii->mii_media_status |= IFM_ACTIVE;
  199 
  200         bmcr = PHY_READ(sc, MII_BMCR);
  201         if (bmcr & BMCR_ISO) {
  202                 mii->mii_media_active |= IFM_NONE;
  203                 mii->mii_media_status = 0;
  204                 return;
  205         }
  206 
  207         if (bmcr & BMCR_LOOP)
  208                 mii->mii_media_active |= IFM_LOOP;
  209 
  210         if (bmcr & BMCR_AUTOEN) {
  211                 if ((bmsr & BMSR_ACOMP) == 0) {
  212                         mii->mii_media_active |= IFM_NONE;
  213                         return;
  214                 }
  215 
  216                 scr = PHY_READ(sc, MII_INPHY_SCR);
  217                 if ((bmsr & BMSR_100T4) && (scr & SCR_T4))
  218                         mii->mii_media_active |= IFM_100_T4;
  219                 else if (scr & SCR_S100)
  220                         mii->mii_media_active |= IFM_100_TX;
  221                 else
  222                         mii->mii_media_active |= IFM_10_T;
  223                 if (scr & SCR_FDX)
  224                         mii->mii_media_active |= IFM_FDX;
  225         } else {
  226                 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
  227         }
  228 }

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

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sys/dev/netif/mii_layer/inphy.c