FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/dl10019.c

     /*      $NetBSD: dl10019.c,v 1.17 2021/07/01 20:39:15 thorpej Exp $     */
     
     /*-
      * Copyright (c) 2001 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jason R. Thorpe.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: dl10019.c,v 1.17 2021/07/01 20:39:15 thorpej Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/syslog.h>
    #include <sys/socket.h>
    #include <sys/device.h>
    
    #include <net/if.h>
    #include <net/if_ether.h>
    #include <net/if_media.h>
    
    #include <sys/bus.h>
    #include <sys/intr.h>
    
    #include <dev/mii/miivar.h>
    #include <dev/mii/mii.h>
    #include <dev/mii/mii_bitbang.h>
    
    #include <dev/ic/dp8390reg.h>
    #include <dev/ic/dp8390var.h>
    
    #include <dev/ic/ne2000reg.h>
    #include <dev/ic/ne2000var.h>
    
    #include <dev/ic/dl10019reg.h>
    #include <dev/ic/dl10019var.h>
    
    int     dl10019_mii_readreg(device_t, int, int, uint16_t *);
    int     dl10019_mii_writereg(device_t, int, int, uint16_t);
    void    dl10019_mii_statchg(struct ifnet *);
    
    /*
     * MII bit-bang glue.
     */
    u_int32_t dl10019_mii_bitbang_read(device_t);
    void dl10019_mii_bitbang_write(device_t, u_int32_t);
    
    const struct mii_bitbang_ops dl10019_mii_bitbang_ops = {
            dl10019_mii_bitbang_read,
            dl10019_mii_bitbang_write,
            {
                    DL0_GPIO_MII_DATAOUT,   /* MII_BIT_MDO */
                    DL0_GPIO_MII_DATAIN,    /* MII_BIT_MDI */
                    DL0_GPIO_MII_CLK,       /* MII_BIT_MDC */
                    DL0_19_GPIO_MII_DIROUT, /* MII_BIT_DIR_HOST_PHY */
                    0,                      /* MII_BIT_DIR_PHY_HOST */
            }
    };
    
    const struct mii_bitbang_ops dl10022_mii_bitbang_ops = {
            dl10019_mii_bitbang_read,
            dl10019_mii_bitbang_write,
            {
                    DL0_GPIO_MII_DATAOUT,   /* MII_BIT_MDO */
                    DL0_GPIO_MII_DATAIN,    /* MII_BIT_MDI */
                    DL0_GPIO_MII_CLK,       /* MII_BIT_MDC */
                    DL0_22_GPIO_MII_DIROUT, /* MII_BIT_DIR_HOST_PHY */
                    0,                      /* MII_BIT_DIR_PHY_HOST */
            }
    };
    
    static void
    dl10019_mii_reset(struct dp8390_softc *sc)
    {
            struct ne2000_softc *nsc = (void *) sc;
           int i;
   
           if (nsc->sc_type != NE2000_TYPE_DL10022)
                   return;
   
           for (i = 0; i < 2; i++) {
                   bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
                       0x08);
                   delay(1);
                   bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
                       0x0c);
                   delay(1);
           }
           bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO, 0x00);
   }
   
   static void
   dl10019_tick(void *arg)
   {
           struct dp8390_softc *sc = arg;
           int s;
   
           s = splnet();
           mii_tick(&sc->sc_mii);
           splx(s);
   
           callout_schedule(&sc->sc_tick_ch, hz);
   }
   
   void
   dl10019_media_init(struct dp8390_softc *sc)
   {
           struct ifnet *ifp = &sc->sc_ec.ec_if;
           struct mii_data *mii = &sc->sc_mii;
   
           callout_setfunc(&sc->sc_tick_ch, dl10019_tick, sc);
   
           sc->sc_ec.ec_mii = mii;
   
           mii->mii_ifp = ifp;
           mii->mii_readreg = dl10019_mii_readreg;
           mii->mii_writereg = dl10019_mii_writereg;
           mii->mii_statchg = dl10019_mii_statchg;
           ifmedia_init(&mii->mii_media, IFM_IMASK, dp8390_mediachange,
               dp8390_mediastatus);
   
           dl10019_mii_reset(sc);
   
           mii_attach(sc->sc_dev, mii, 0xffffffff, MII_PHY_ANY,
               MII_OFFSET_ANY, 0);
   
           if (LIST_FIRST(&mii->mii_phys) == NULL) {
                   ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL);
                   ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE);
           } else
                   ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO);
   }
   
   void
   dl10019_media_fini(struct dp8390_softc *sc)
   {
   
           callout_stop(&sc->sc_tick_ch);
           mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY);
           /* dp8390_detach() will call ifmedia_fini(). */
   }
   
   int
   dl10019_mediachange(struct dp8390_softc *sc)
   {
           int rc;
   
           if ((rc = mii_mediachg(&sc->sc_mii)) == ENXIO)
                   return 0;
           return rc;
   }
   
   void
   dl10019_mediastatus(struct dp8390_softc *sc, struct ifmediareq *ifmr)
   {
   
           mii_pollstat(&sc->sc_mii);
           ifmr->ifm_status = sc->sc_mii.mii_media_status;
           ifmr->ifm_active = sc->sc_mii.mii_media_active;
   }
   
   void
   dl10019_init_card(struct dp8390_softc *sc)
   {
   
           dl10019_mii_reset(sc);
           mii_mediachg(&sc->sc_mii);
           callout_schedule(&sc->sc_tick_ch, hz);
   }
   
   void
   dl10019_stop_card(struct dp8390_softc *sc)
   {
   
           callout_stop(&sc->sc_tick_ch);
           mii_down(&sc->sc_mii);
   }
   
   u_int32_t
   dl10019_mii_bitbang_read(device_t self)
   {
           struct dp8390_softc *sc = device_private(self);
   
           /* We're already in Page 0. */
           return (bus_space_read_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO) &
               ~DL0_GPIO_PRESERVE);
   }
   
   void
   dl10019_mii_bitbang_write(device_t self, u_int32_t val)
   {
           struct dp8390_softc *sc = device_private(self);
           u_int8_t gpio;
   
           /* We're already in Page 0. */
           gpio = bus_space_read_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO);
           bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
               (val & ~DL0_GPIO_PRESERVE) | (gpio & DL0_GPIO_PRESERVE));
   }
   
   int
   dl10019_mii_readreg(device_t self, int phy, int reg, uint16_t *val)
   {
           struct ne2000_softc *nsc = device_private(self);
           const struct mii_bitbang_ops *ops;
   
           ops = (nsc->sc_type == NE2000_TYPE_DL10022) ?
               &dl10022_mii_bitbang_ops : &dl10019_mii_bitbang_ops;
   
           return mii_bitbang_readreg(self, ops, phy, reg, val);
   }
   
   int
   dl10019_mii_writereg(device_t self, int phy, int reg, uint16_t val)
   {
           struct ne2000_softc *nsc = device_private(self);
           const struct mii_bitbang_ops *ops;
   
           ops = (nsc->sc_type == NE2000_TYPE_DL10022) ?
               &dl10022_mii_bitbang_ops : &dl10019_mii_bitbang_ops;
   
           return mii_bitbang_writereg(self, ops, phy, reg, val);
   }
   
   void
   dl10019_mii_statchg(struct ifnet *ifp)
   {
           struct ne2000_softc *nsc = ifp->if_softc;
           struct dp8390_softc *sc = &nsc->sc_dp8390;
   
           /*
            * Disable collision detection on the DL10022 if
            * we are on a full-duplex link.
            */
           if (nsc->sc_type == NE2000_TYPE_DL10022) {
                   u_int8_t diag;
   
                   if (sc->sc_mii.mii_media_active & IFM_FDX)
                           diag = DL0_DIAG_NOCOLLDETECT;
                   else
                           diag = 0;
                   bus_space_write_1(sc->sc_regt, sc->sc_regh,
                       NEDL_DL0_DIAG, diag);
           }
   }

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