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 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/6.0/sys/dev/mii/pnphy.c 146734 2005-05-29 04:42:30Z nyan $");
   35 
   36 /*
   37  * Pseudo-driver for media selection on the Lite-On PNIC 82c168
   38  * chip. The NWAY support on this chip is horribly broken, so we
   39  * only support manual mode selection. This is lame, but getting
   40  * NWAY to work right is amazingly difficult.
   41  */
   42 
   43 #include <sys/param.h>
   44 #include <sys/systm.h>
   45 #include <sys/kernel.h>
   46 #include <sys/socket.h>
   47 #include <sys/errno.h>
   48 #include <sys/lock.h>
   49 #include <sys/module.h>
   50 #include <sys/mutex.h>
   51 #include <sys/bus.h>
   52 
   53 #include <net/if.h>
   54 #include <net/if_arp.h>
   55 #include <net/if_media.h>
   56 
   57 #include <dev/mii/mii.h>
   58 #include <dev/mii/miivar.h>
   59 #include "miidevs.h"
   60 
   61 #include <machine/bus.h>
   62 #include <machine/resource.h>
   63 #include <sys/bus.h>
   64 
   65 #include <pci/if_dcreg.h>
   66 
   67 #include "miibus_if.h"
   68 
   69 #define DC_SETBIT(sc, reg, x)                           \
   70         CSR_WRITE_4(sc, reg,                            \
   71                 CSR_READ_4(sc, reg) | x)
   72 
   73 #define DC_CLRBIT(sc, reg, x)                           \
   74         CSR_WRITE_4(sc, reg,                            \
   75                 CSR_READ_4(sc, reg) & ~x)
   76 
   77 static int pnphy_probe(device_t);
   78 static int pnphy_attach(device_t);
   79 
   80 static device_method_t pnphy_methods[] = {
   81         /* device interface */
   82         DEVMETHOD(device_probe,         pnphy_probe),
   83         DEVMETHOD(device_attach,        pnphy_attach),
   84         DEVMETHOD(device_detach,        mii_phy_detach),
   85         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   86         { 0, 0 }
   87 };
   88 
   89 static devclass_t pnphy_devclass;
   90 
   91 static driver_t pnphy_driver = {
   92         "pnphy",
   93         pnphy_methods,
   94         sizeof(struct mii_softc)
   95 };
   96 
   97 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);
   98 
   99 static int      pnphy_service(struct mii_softc *, struct mii_data *, int);
  100 static void     pnphy_status(struct mii_softc *);
  101 
  102 static int
  103 pnphy_probe(dev)
  104         device_t                dev;
  105 {
  106         struct mii_attach_args *ma;
  107 
  108         ma = device_get_ivars(dev);
  109 
  110         /*
  111          * The dc driver will report the 82c168 vendor and device
  112          * ID to let us know that it wants us to attach.
  113          */
  114         if (ma->mii_id1 != DC_VENDORID_LO ||
  115             ma->mii_id2 != DC_DEVICEID_82C168)
  116                 return(ENXIO);
  117 
  118         device_set_desc(dev, "PNIC 82c168 media interface");
  119 
  120         return (0);
  121 }
  122 
  123 static int
  124 pnphy_attach(dev)
  125         device_t                dev;
  126 {
  127         struct mii_softc *sc;
  128         struct mii_attach_args *ma;
  129         struct mii_data *mii;
  130 
  131         sc = device_get_softc(dev);
  132         ma = device_get_ivars(dev);
  133         sc->mii_dev = device_get_parent(dev);
  134         mii = device_get_softc(sc->mii_dev);
  135         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  136 
  137         sc->mii_inst = mii->mii_instance;
  138         sc->mii_phy = ma->mii_phyno;
  139         sc->mii_service = pnphy_service;
  140         sc->mii_pdata = mii;
  141 
  142         sc->mii_flags |= MIIF_NOISOLATE;
  143         mii->mii_instance++;
  144 
  145 #define ADD(m, c)       ifmedia_add(&mii->mii_media, (m), (c), NULL)
  146 
  147         sc->mii_capabilities =
  148             BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX;
  149         sc->mii_capabilities &= ma->mii_capmask;
  150         device_printf(dev, " ");
  151         mii_add_media(sc);
  152         printf("\n");
  153         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
  154             BMCR_ISO);
  155 
  156         ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
  157             BMCR_LOOP|BMCR_S100);
  158 
  159 #undef ADD
  160 
  161         MIIBUS_MEDIAINIT(sc->mii_dev);
  162         return(0);
  163 }
  164 
  165 static int
  166 pnphy_service(sc, mii, cmd)
  167         struct mii_softc *sc;
  168         struct mii_data *mii;
  169         int cmd;
  170 {
  171         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  172 
  173         switch (cmd) {
  174         case MII_POLLSTAT:
  175                 /*
  176                  * If we're not polling our PHY instance, just return.
  177                  */
  178                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  179                         return (0);
  180                 }
  181                 break;
  182 
  183         case MII_MEDIACHG:
  184                 /*
  185                  * If the media indicates a different PHY instance,
  186                  * isolate ourselves.
  187                  */
  188                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  189                         return (0);
  190 
  191                 /*
  192                  * If the interface is not up, don't do anything.
  193                  */
  194                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  195                         break;
  196 
  197                 sc->mii_flags = 0;
  198 
  199                 switch (IFM_SUBTYPE(ife->ifm_media)) {
  200                 case IFM_AUTO:
  201                         /* NWAY is busted on this chip */
  202                 case IFM_100_T4:
  203                         /*
  204                          * XXX Not supported as a manual setting right now.
  205                          */
  206                         return (EINVAL);
  207                 case IFM_100_TX:
  208                         mii->mii_media_active = IFM_ETHER|IFM_100_TX;
  209                         if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
  210                                 mii->mii_media_active |= IFM_FDX;
  211                         MIIBUS_STATCHG(sc->mii_dev);
  212                         return(0);
  213                 case IFM_10_T:
  214                         mii->mii_media_active = IFM_ETHER|IFM_10_T;
  215                         if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
  216                                 mii->mii_media_active |= IFM_FDX;
  217                         MIIBUS_STATCHG(sc->mii_dev);
  218                         return(0);
  219                 default:
  220                         return(EINVAL);
  221                 }
  222                 break;
  223 
  224         case MII_TICK:
  225                 /*
  226                  * If we're not currently selected, just return.
  227                  */
  228                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  229                         return (0);
  230 
  231                 /*
  232                  * Is the interface even up?
  233                  */
  234                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  235                         return (0);
  236 
  237                 break;
  238         }
  239 
  240         /* Update the media status. */
  241         pnphy_status(sc);
  242 
  243         /* Callback if something changed. */
  244         mii_phy_update(sc, cmd);
  245         return (0);
  246 }
  247 
  248 static void
  249 pnphy_status(sc)
  250         struct mii_softc *sc;
  251 {
  252         struct mii_data *mii = sc->mii_pdata;
  253         int reg;
  254         struct dc_softc         *dc_sc;
  255 
  256         dc_sc = mii->mii_ifp->if_softc;
  257 
  258         mii->mii_media_status = IFM_AVALID;
  259         mii->mii_media_active = IFM_ETHER;
  260 
  261         reg = CSR_READ_4(dc_sc, DC_ISR);
  262 
  263         if (!(reg & DC_ISR_LINKFAIL))
  264                 mii->mii_media_status |= IFM_ACTIVE;
  265 
  266         if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL)
  267                 mii->mii_media_active |= IFM_10_T;
  268         else
  269                 mii->mii_media_active |= IFM_100_TX;
  270         if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX)
  271                 mii->mii_media_active |= IFM_FDX;
  272 
  273         return;
  274 }

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

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sys/dev/mii/pnphy.c