qsphy.c

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    1 /*      $OpenBSD: qsphy.c,v 1.13 2005/02/19 06:00:04 brad Exp $ */
    2 /*      NetBSD: qsphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp  */
    3 
    4 /*-
    5  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to The NetBSD Foundation
    9  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   10  * NASA Ames Research Center.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. All advertising materials mentioning features or use of this software
   21  *    must display the following acknowledgement:
   22  *      This product includes software developed by the NetBSD
   23  *      Foundation, Inc. and its contributors.
   24  * 4. Neither the name of The NetBSD Foundation nor the names of its
   25  *    contributors may be used to endorse or promote products derived
   26  *    from this software without specific prior written permission.
   27  *
   28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   38  * POSSIBILITY OF SUCH DAMAGE.
   39  *
   40  * $FreeBSD: src/sys/dev/mii/qsphy.c,v 1.1.2.2 2002/10/21 21:21:42 semenu Exp $
   41  */
   42  
   43 /*
   44  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
   45  *
   46  * Redistribution and use in source and binary forms, with or without
   47  * modification, are permitted provided that the following conditions
   48  * are met:
   49  * 1. Redistributions of source code must retain the above copyright
   50  *    notice, this list of conditions and the following disclaimer.
   51  * 2. Redistributions in binary form must reproduce the above copyright
   52  *    notice, this list of conditions and the following disclaimer in the
   53  *    documentation and/or other materials provided with the distribution.
   54  * 3. All advertising materials mentioning features or use of this software
   55  *    must display the following acknowledgement:
   56  *      This product includes software developed by Manuel Bouyer.
   57  * 4. The name of the author may not be used to endorse or promote products
   58  *    derived from this software without specific prior written permission.
   59  *
   60  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   61  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   62  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   63  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   64  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   65  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   66  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   67  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   68  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   69  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   70  */
   71 
   72 /*
   73  * driver for Quality Semiconductor's QS6612 ethernet 10/100 PHY
   74  * datasheet from www.qualitysemi.com
   75  */
   76 
   77 #include <sys/param.h>
   78 #include <sys/systm.h>
   79 #include <sys/kernel.h>
   80 #include <sys/socket.h>
   81 #include <sys/errno.h>
   82 #include <sys/module.h>
   83 #include <sys/bus.h>
   84 
   85 #include <net/if.h>
   86 #include <net/if_media.h>
   87 
   88 #include "mii.h"
   89 #include "miivar.h"
   90 #include "miidevs.h"
   91 
   92 #include "qsphyreg.h"
   93 
   94 #include "miibus_if.h"
   95 
   96 static int qsphy_probe          (device_t);
   97 static int qsphy_attach         (device_t);
   98 
   99 static device_method_t qsphy_methods[] = {
  100         /* device interface */
  101         DEVMETHOD(device_probe,         qsphy_probe),
  102         DEVMETHOD(device_attach,        qsphy_attach),
  103         DEVMETHOD(device_detach,        ukphy_detach),
  104         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  105         DEVMETHOD_END
  106 };
  107 
  108 static const struct mii_phydesc qsphys[] = {
  109         MII_PHYDESC(QUALSEMI,   QS6612),
  110         MII_PHYDESC_NULL
  111 };
  112 
  113 static devclass_t qsphy_devclass;
  114 
  115 static driver_t qsphy_driver = {
  116         "qsphy",
  117         qsphy_methods,
  118         sizeof(struct mii_softc)
  119 };
  120 
  121 DRIVER_MODULE(qsphy, miibus, qsphy_driver, qsphy_devclass, NULL, NULL);
  122 
  123 static int      qsphy_service(struct mii_softc *, struct mii_data *, int);
  124 static void     qsphy_reset(struct mii_softc *);
  125 static void     qsphy_status(struct mii_softc *);
  126 
  127 static int
  128 qsphy_probe(device_t dev)
  129 {
  130         struct mii_attach_args *ma = device_get_ivars(dev);
  131         const struct mii_phydesc *mpd;
  132 
  133         mpd = mii_phy_match(ma, qsphys);
  134         if (mpd != NULL) {
  135                 device_set_desc(dev, mpd->mpd_name);
  136                 return (0);
  137         }
  138         return (ENXIO);
  139 }
  140 
  141 static int
  142 qsphy_attach(device_t dev)
  143 {
  144         struct mii_softc *sc;
  145         struct mii_attach_args *ma;
  146         struct mii_data *mii;
  147 
  148         sc = device_get_softc(dev);
  149         ma = device_get_ivars(dev);
  150         mii_softc_init(sc, ma);
  151         sc->mii_dev = device_get_parent(dev);
  152         mii = device_get_softc(sc->mii_dev);
  153         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  154 
  155         sc->mii_inst = mii->mii_instance;
  156         sc->mii_service = qsphy_service;
  157         sc->mii_reset = qsphy_reset;
  158         sc->mii_pdata = mii;
  159         sc->mii_flags |= MIIF_NOISOLATE;
  160 
  161         qsphy_reset(sc);
  162 
  163         mii->mii_instance++;
  164 
  165         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  166         device_printf(dev, " ");
  167         if (sc->mii_capabilities & BMSR_MEDIAMASK)
  168                 mii_phy_add_media(sc);
  169         else
  170                 kprintf("no media present");
  171         kprintf("\n");
  172 
  173         MIIBUS_MEDIAINIT(sc->mii_dev);
  174         return (0);
  175 }
  176 
  177 static int
  178 qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  179 {
  180         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  181         int reg;
  182 
  183         /*
  184          * If we're not selected, then do nothing, just isolate, if
  185          * changing media.
  186          */
  187         if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  188                 if (cmd == MII_MEDIACHG) {
  189                         reg = PHY_READ(sc, MII_BMCR);
  190                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
  191                 }
  192 
  193                 return (0);
  194         }
  195 
  196         switch (cmd) {
  197         case MII_POLLSTAT:
  198                 break;
  199 
  200         case MII_MEDIACHG:
  201                 /*
  202                  * If the interface is not up, don't do anything.
  203                  */
  204                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  205                         break;
  206 
  207                 mii_phy_set_media(sc);
  208                 break;
  209 
  210         case MII_TICK:
  211                 /*
  212                  * Is the interface even up?
  213                  */
  214                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  215                         return (0);
  216 
  217                 /*
  218                  * Only used for autonegotiation.
  219                  */
  220                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
  221                         break;
  222 
  223                 /*
  224                  * This PHY's autonegotiation doesn't need to be kicked.
  225                  */
  226                 break;
  227         }
  228 
  229         /* Update the media status. */
  230         qsphy_status(sc);
  231 
  232         /* Callback if something changed. */
  233         mii_phy_update(sc, cmd);
  234         return (0);
  235 }
  236 
  237 static void
  238 qsphy_status(struct mii_softc *sc)
  239 {
  240         struct mii_data *mii = sc->mii_pdata;
  241         int bmsr, bmcr, pctl;
  242 
  243         mii->mii_media_status = IFM_AVALID;
  244         mii->mii_media_active = IFM_ETHER;
  245 
  246         bmsr = PHY_READ(sc, MII_BMSR) |
  247             PHY_READ(sc, MII_BMSR);
  248         if (bmsr & BMSR_LINK)
  249                 mii->mii_media_status |= IFM_ACTIVE;
  250 
  251         bmcr = PHY_READ(sc, MII_BMCR);
  252         if (bmcr & BMCR_ISO) {
  253                 mii->mii_media_active |= IFM_NONE;
  254                 mii->mii_media_status = 0;
  255                 return;
  256         }
  257 
  258         if (bmcr & BMCR_LOOP)
  259                 mii->mii_media_active |= IFM_LOOP;
  260 
  261         if (bmcr & BMCR_AUTOEN) {
  262                 if ((bmsr & BMSR_ACOMP) == 0) {
  263                         /* Erg, still trying, I guess... */
  264                         mii->mii_media_active |= IFM_NONE;
  265                         return;
  266                 }
  267 
  268                 pctl = PHY_READ(sc, MII_QSPHY_PCTL);
  269                 switch (pctl & PCTL_OPMASK) {
  270                 case PCTL_10_T:
  271                         mii->mii_media_active |= IFM_10_T;
  272                         break;
  273                 case PCTL_10_T_FDX:
  274                         mii->mii_media_active |= IFM_10_T|IFM_FDX;
  275                         break;
  276                 case PCTL_100_TX:
  277                         mii->mii_media_active |= IFM_100_TX;
  278                         break;
  279                 case PCTL_100_TX_FDX:
  280                         mii->mii_media_active |= IFM_100_TX|IFM_FDX;
  281                         break;
  282                 case PCTL_100_T4:
  283                         mii->mii_media_active |= IFM_100_T4;
  284                         break;
  285                 case PCTL_AN:
  286                         mii->mii_media_active |= IFM_NONE;
  287                         break;
  288                 default:
  289                         /* Erg... this shouldn't happen. */
  290                         mii->mii_media_active |= IFM_NONE;
  291                         break;
  292                 }
  293         } else {
  294                 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
  295         }
  296 }
  297 
  298 static void
  299 qsphy_reset(struct mii_softc *sc)
  300 {
  301         mii_phy_reset(sc);
  302         PHY_WRITE(sc, MII_QSPHY_IMASK, 0);
  303 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/netif/mii_layer/qsphy.c

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sys/dev/netif/mii_layer/qsphy.c
