The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/ukphy_subr.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 /*      $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $   */
    2 
    3 /*-
    4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    9  * NASA Ames Research Center, and by Frank van der Linden.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   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 THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/8.2/sys/dev/mii/ukphy_subr.c 215881 2010-11-26 20:37:19Z marius $");
   35 
   36 /*
   37  * Subroutines shared by the ukphy driver and other PHY drivers.
   38  */
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/socket.h>
   43 #include <sys/module.h>
   44 #include <sys/bus.h>
   45 
   46 #include <net/if.h>
   47 #include <net/if_media.h>
   48 
   49 #include <dev/mii/mii.h>
   50 #include <dev/mii/miivar.h>
   51 
   52 #include "miibus_if.h"
   53 
   54 /*
   55  * Media status subroutine.  If a PHY driver does media detection simply
   56  * by decoding the NWay autonegotiation, use this routine.
   57  */
   58 void
   59 ukphy_status(struct mii_softc *phy)
   60 {
   61         struct mii_data *mii = phy->mii_pdata;
   62         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
   63         int bmsr, bmcr, anlpar, gtcr, gtsr;
   64 
   65         mii->mii_media_status = IFM_AVALID;
   66         mii->mii_media_active = IFM_ETHER;
   67 
   68         bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
   69         if (bmsr & BMSR_LINK)
   70                 mii->mii_media_status |= IFM_ACTIVE;
   71 
   72         bmcr = PHY_READ(phy, MII_BMCR);
   73         if (bmcr & BMCR_ISO) {
   74                 mii->mii_media_active |= IFM_NONE;
   75                 mii->mii_media_status = 0;
   76                 return;
   77         }
   78 
   79         if (bmcr & BMCR_LOOP)
   80                 mii->mii_media_active |= IFM_LOOP;
   81 
   82         if (bmcr & BMCR_AUTOEN) {
   83                 /*
   84                  * NWay autonegotiation takes the highest-order common
   85                  * bit of the ANAR and ANLPAR (i.e. best media advertised
   86                  * both by us and our link partner).
   87                  */
   88                 if ((bmsr & BMSR_ACOMP) == 0) {
   89                         /* Erg, still trying, I guess... */
   90                         mii->mii_media_active |= IFM_NONE;
   91                         return;
   92                 }
   93 
   94                 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
   95                 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 &&
   96                     (phy->mii_extcapabilities &
   97                     (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) {
   98                         gtcr = PHY_READ(phy, MII_100T2CR);
   99                         gtsr = PHY_READ(phy, MII_100T2SR);
  100                 } else
  101                         gtcr = gtsr = 0;
  102 
  103                 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX))
  104                         mii->mii_media_active |= IFM_1000_T|IFM_FDX;
  105                 else if ((gtcr & GTCR_ADV_1000THDX) &&
  106                     (gtsr & GTSR_LP_1000THDX))
  107                         mii->mii_media_active |= IFM_1000_T|IFM_HDX;
  108                 else if (anlpar & ANLPAR_TX_FD)
  109                         mii->mii_media_active |= IFM_100_TX|IFM_FDX;
  110                 else if (anlpar & ANLPAR_T4)
  111                         mii->mii_media_active |= IFM_100_T4|IFM_HDX;
  112                 else if (anlpar & ANLPAR_TX)
  113                         mii->mii_media_active |= IFM_100_TX|IFM_HDX;
  114                 else if (anlpar & ANLPAR_10_FD)
  115                         mii->mii_media_active |= IFM_10_T|IFM_FDX;
  116                 else if (anlpar & ANLPAR_10)
  117                         mii->mii_media_active |= IFM_10_T|IFM_HDX;
  118                 else
  119                         mii->mii_media_active |= IFM_NONE;
  120 
  121                 if ((mii->mii_media_active & IFM_1000_T) != 0 &&
  122                     (gtsr & GTSR_MS_RES) != 0)
  123                         mii->mii_media_active |= IFM_ETH_MASTER;
  124 
  125                 if ((mii->mii_media_active & IFM_FDX) != 0)
  126                         mii->mii_media_active |= mii_phy_flowstatus(phy);
  127         } else
  128                 mii->mii_media_active = ife->ifm_media;
  129 }

Cache object: 05f886118ef39806ea294e21740034d4


[ 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.