pnphy.c

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    1 /*
    2  * Copyright (c) 1997, 1998, 1999
    3  *      Bill Paul <wpaul@ee.columbia.edu>.  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. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by Bill Paul.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   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
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * $FreeBSD: src/sys/dev/mii/pnphy.c,v 1.1.2.1 2002/11/08 21:53:49 semenu Exp $
   33  */
   34 
   35 /*
   36  * Pseudo-driver for media selection on the Lite-On PNIC 82c168
   37  * chip. The NWAY support on this chip is horribly broken, so we
   38  * only support manual mode selection. This is lame, but getting
   39  * NWAY to work right is amazingly difficult.
   40  */
   41 
   42 #include <sys/param.h>
   43 #include <sys/systm.h>
   44 #include <sys/kernel.h>
   45 #include <sys/socket.h>
   46 #include <sys/errno.h>
   47 #include <sys/module.h>
   48 #include <sys/bus.h>
   49 
   50 #include <net/if.h>
   51 #include <net/if_arp.h>
   52 #include <net/if_media.h>
   53 #include <net/if_poll.h>
   54 
   55 #include "mii.h"
   56 #include "miivar.h"
   57 #include "miidevs.h"
   58 
   59 #include <machine/clock.h>
   60 
   61 #include "../dc/if_dcreg.h"
   62 
   63 #include "miibus_if.h"
   64 
   65 #define DC_SETBIT(sc, reg, x)                           \
   66         CSR_WRITE_4(sc, reg,                            \
   67                 CSR_READ_4(sc, reg) | x)
   68 
   69 #define DC_CLRBIT(sc, reg, x)                           \
   70         CSR_WRITE_4(sc, reg,                            \
   71                 CSR_READ_4(sc, reg) & ~x)
   72 
   73 static int pnphy_probe          (device_t);
   74 static int pnphy_attach         (device_t);
   75 
   76 static device_method_t pnphy_methods[] = {
   77         /* device interface */
   78         DEVMETHOD(device_probe,         pnphy_probe),
   79         DEVMETHOD(device_attach,        pnphy_attach),
   80         DEVMETHOD(device_detach,        ukphy_detach),
   81         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   82         DEVMETHOD_END
   83 };
   84 
   85 static devclass_t pnphy_devclass;
   86 
   87 static driver_t pnphy_driver = {
   88         "pnphy",
   89         pnphy_methods,
   90         sizeof(struct mii_softc)
   91 };
   92 
   93 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, NULL, NULL);
   94 
   95 static int      pnphy_service(struct mii_softc *, struct mii_data *, int);
   96 static void     pnphy_status(struct mii_softc *);
   97 
   98 static int
   99 pnphy_probe(device_t dev)
  100 {
  101         struct mii_attach_args *ma;
  102 
  103         ma = device_get_ivars(dev);
  104 
  105         /*
  106          * The dc driver will report the 82c168 vendor and device
  107          * ID to let us know that it wants us to attach.
  108          */
  109         if (ma->mii_id1 != DC_VENDORID_LO ||
  110             ma->mii_id2 != DC_DEVICEID_82C168)
  111                 return(ENXIO);
  112 
  113         device_set_desc(dev, "PNIC 82c168 media interface");
  114 
  115         return (0);
  116 }
  117 
  118 static int
  119 pnphy_attach(device_t dev)
  120 {
  121         struct mii_softc *sc;
  122         struct mii_attach_args *ma;
  123         struct mii_data *mii;
  124 
  125         sc = device_get_softc(dev);
  126         ma = device_get_ivars(dev);
  127         mii_softc_init(sc, ma);
  128         sc->mii_dev = device_get_parent(dev);
  129         mii = device_get_softc(sc->mii_dev);
  130         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  131 
  132         sc->mii_inst = mii->mii_instance;
  133         sc->mii_service = pnphy_service;
  134         sc->mii_pdata = mii;
  135 
  136         sc->mii_flags |= MIIF_NOISOLATE;
  137         mii->mii_instance++;
  138 
  139 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  140 
  141         sc->mii_capabilities =
  142             BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX;
  143         sc->mii_capabilities &= ma->mii_capmask;
  144         device_printf(dev, " ");
  145         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
  146                 kprintf("no media present");
  147         else
  148                 mii_phy_add_media(sc);
  149         kprintf("\n");
  150 
  151         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  152             MII_MEDIA_NONE);
  153 
  154         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
  155             MII_MEDIA_100_TX);
  156 
  157 #undef ADD
  158 
  159         MIIBUS_MEDIAINIT(sc->mii_dev);
  160         return(0);
  161 }
  162 
  163 static int
  164 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  165 {
  166         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  167 
  168         switch (cmd) {
  169         case MII_POLLSTAT:
  170                 /*
  171                  * If we're not polling our PHY instance, just return.
  172                  */
  173                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  174                         return (0);
  175                 }
  176                 break;
  177 
  178         case MII_MEDIACHG:
  179                 /*
  180                  * If the media indicates a different PHY instance,
  181                  * isolate ourselves.
  182                  */
  183                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  184                         return (0);
  185 
  186                 /*
  187                  * If the interface is not up, don't do anything.
  188                  */
  189                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  190                         break;
  191 
  192                 sc->mii_flags = 0;
  193 
  194                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  195                 case IFM_AUTO:
  196                         /* NWAY is busted on this chip */
  197                 case IFM_100_T4:
  198                         /*
  199                          * XXX Not supported as a manual setting right now.
  200                          */
  201                         return (EINVAL);
  202                 case IFM_100_TX:
  203                         mii->mii_media_active = IFM_ETHER|IFM_100_TX;
  204                         if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
  205                                 mii->mii_media_active |= IFM_FDX;
  206                         MIIBUS_STATCHG(sc->mii_dev);
  207                         return(0);
  208                         break;
  209                 case IFM_10_T:
  210                         mii->mii_media_active = IFM_ETHER|IFM_10_T;
  211                         if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
  212                                 mii->mii_media_active |= IFM_FDX;
  213                         MIIBUS_STATCHG(sc->mii_dev);
  214                         return(0);
  215                         break;
  216                 default:
  217                         return(EINVAL);
  218                         break;
  219                 }
  220                 break;
  221 
  222         case MII_TICK:
  223                 /*
  224                  * If we're not currently selected, just return.
  225                  */
  226                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  227                         return (0);
  228 
  229                 /*
  230                  * Is the interface even up?
  231                  */
  232                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  233                         return (0);
  234 
  235                 /*
  236                  * Only used for autonegotiation.
  237                  */
  238                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  239                         break;
  240 
  241                 /*
  242                  * This PHY's autonegotiation doesn't need to be kicked.
  243                  */
  244                 return(0);
  245         }
  246 
  247         /* Update the media status. */
  248         pnphy_status(sc);
  249 
  250         /* Callback if something changed. */
  251         mii_phy_update(sc, cmd);
  252         return (0);
  253 }
  254 
  255 static void
  256 pnphy_status(struct mii_softc *sc)
  257 {
  258         struct mii_data *mii = sc->mii_pdata;
  259         struct dc_softc *dc_sc = mii->mii_ifp->if_softc;
  260         int reg;
  261 
  262         mii->mii_media_status = IFM_AVALID;
  263         mii->mii_media_active = IFM_ETHER;
  264 
  265         reg = CSR_READ_4(dc_sc, DC_ISR);
  266 
  267         if (!(reg & DC_ISR_LINKFAIL))
  268                 mii->mii_media_status |= IFM_ACTIVE;
  269 
  270         if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL)
  271                 mii->mii_media_active |= IFM_10_T;
  272         else
  273                 mii->mii_media_active |= IFM_100_TX;
  274         if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX)
  275                 mii->mii_media_active |= IFM_FDX;
  276 }

Cache object: 74c1f184e6061fc14d3d0637a838b837

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

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sys/dev/netif/mii_layer/pnphy.c