sys/dev/ic/dl10019.c

   1 /*      $NetBSD: dl10019.c,v 1.10 2008/03/12 14:31:11 cube Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2001 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.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: dl10019.c,v 1.10 2008/03/12 14:31:11 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/mbuf.h>
  38 #include <sys/syslog.h>
  39 #include <sys/socket.h>
  40 #include <sys/device.h>
  41
  42 #include <net/if.h>
  43 #include <net/if_ether.h>
  44 #include <net/if_media.h>
  45
  46 #include <sys/bus.h>
  47 #include <sys/intr.h>
  48
  49 #include <dev/mii/miivar.h>
  50 #include <dev/mii/mii.h>
  51 #include <dev/mii/mii_bitbang.h>
  52
  53 #include <dev/ic/dp8390reg.h>
  54 #include <dev/ic/dp8390var.h>
  55
  56 #include <dev/ic/ne2000reg.h>
  57 #include <dev/ic/ne2000var.h>
  58
  59 #include <dev/ic/dl10019reg.h>
  60 #include <dev/ic/dl10019var.h>
  61
  62 int     dl10019_mii_readreg(device_t, int, int);
  63 void    dl10019_mii_writereg(device_t, int, int, int);
  64 void    dl10019_mii_statchg(device_t);
  65
  66 /*
  67  * MII bit-bang glue.
  68  */
  69 u_int32_t dl10019_mii_bitbang_read(device_t);
  70 void dl10019_mii_bitbang_write(device_t, u_int32_t);
  71
  72 const struct mii_bitbang_ops dl10019_mii_bitbang_ops = {
  73         dl10019_mii_bitbang_read,
  74         dl10019_mii_bitbang_write,
  75         {
  76                 DL0_GPIO_MII_DATAOUT,   /* MII_BIT_MDO */
  77                 DL0_GPIO_MII_DATAIN,    /* MII_BIT_MDI */
  78                 DL0_GPIO_MII_CLK,       /* MII_BIT_MDC */
  79                 DL0_19_GPIO_MII_DIROUT, /* MII_BIT_DIR_HOST_PHY */
  80                 0,                      /* MII_BIT_DIR_PHY_HOST */
  81         }
  82 };
  83
  84 const struct mii_bitbang_ops dl10022_mii_bitbang_ops = {
  85         dl10019_mii_bitbang_read,
  86         dl10019_mii_bitbang_write,
  87         {
  88                 DL0_GPIO_MII_DATAOUT,   /* MII_BIT_MDO */
  89                 DL0_GPIO_MII_DATAIN,    /* MII_BIT_MDI */
  90                 DL0_GPIO_MII_CLK,       /* MII_BIT_MDC */
  91                 DL0_22_GPIO_MII_DIROUT, /* MII_BIT_DIR_HOST_PHY */
  92                 0,                      /* MII_BIT_DIR_PHY_HOST */
  93         }
  94 };
  95
  96 static void
  97 dl10019_mii_reset(struct dp8390_softc *sc)
  98 {
  99         struct ne2000_softc *nsc = (void *) sc;
 100         int i;
 101
 102         if (nsc->sc_type != NE2000_TYPE_DL10022)
 103                 return;
 104
 105         for (i = 0; i < 2; i++) {
 106                 bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
 107                     0x08);
 108                 delay(1);
 109                 bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
 110                     0x0c);
 111                 delay(1);
 112         }
 113         bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO, 0x00);
 114 }
 115
 116 void
 117 dl10019_media_init(struct dp8390_softc *sc)
 118 {
 119         struct ifnet *ifp = &sc->sc_ec.ec_if;
 120
 121         sc->sc_mii.mii_ifp = ifp;
 122         sc->sc_mii.mii_readreg = dl10019_mii_readreg;
 123         sc->sc_mii.mii_writereg = dl10019_mii_writereg;
 124         sc->sc_mii.mii_statchg = dl10019_mii_statchg;
 125         ifmedia_init(&sc->sc_mii.mii_media, IFM_IMASK, dp8390_mediachange,
 126             dp8390_mediastatus);
 127
 128         dl10019_mii_reset(sc);
 129
 130         mii_attach(sc->sc_dev, &sc->sc_mii, 0xffffffff, MII_PHY_ANY,
 131             MII_OFFSET_ANY, 0);
 132
 133         if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
 134                 ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
 135                 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE);
 136         } else
 137                 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO);
 138 }
 139
 140 void
 141 dl10019_media_fini(struct dp8390_softc *sc)
 142 {
 143
 144         mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY);
 145 }
 146
 147 int
 148 dl10019_mediachange(struct dp8390_softc *sc)
 149 {
 150         int rc;
 151
 152         if ((rc = mii_mediachg(&sc->sc_mii)) == ENXIO)
 153                 return 0;
 154         return rc;
 155 }
 156
 157 void
 158 dl10019_mediastatus(struct dp8390_softc *sc, struct ifmediareq *ifmr)
 159 {
 160
 161         mii_pollstat(&sc->sc_mii);
 162         ifmr->ifm_status = sc->sc_mii.mii_media_status;
 163         ifmr->ifm_active = sc->sc_mii.mii_media_active;
 164 }
 165
 166 void
 167 dl10019_init_card(struct dp8390_softc *sc)
 168 {
 169
 170         dl10019_mii_reset(sc);
 171         mii_mediachg(&sc->sc_mii);
 172 }
 173
 174 void
 175 dl10019_stop_card(struct dp8390_softc *sc)
 176 {
 177
 178         mii_down(&sc->sc_mii);
 179 }
 180
 181 u_int32_t
 182 dl10019_mii_bitbang_read(device_t self)
 183 {
 184         struct dp8390_softc *sc = device_private(self);
 185
 186         /* We're already in Page 0. */
 187         return (bus_space_read_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO) &
 188             ~DL0_GPIO_PRESERVE);
 189 }
 190
 191 void
 192 dl10019_mii_bitbang_write(device_t self, u_int32_t val)
 193 {
 194         struct dp8390_softc *sc = device_private(self);
 195         u_int8_t gpio;
 196
 197         /* We're already in Page 0. */
 198         gpio = bus_space_read_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO);
 199         bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
 200             (val & ~DL0_GPIO_PRESERVE) | (gpio & DL0_GPIO_PRESERVE));
 201 }
 202
 203 int
 204 dl10019_mii_readreg(device_t self, int phy, int reg)
 205 {
 206         struct ne2000_softc *nsc = device_private(self);
 207         const struct mii_bitbang_ops *ops;
 208         int val;
 209
 210         ops = (nsc->sc_type == NE2000_TYPE_DL10022) ?
 211             &dl10022_mii_bitbang_ops : &dl10019_mii_bitbang_ops;
 212
 213         val = mii_bitbang_readreg(self, ops, phy, reg);
 214
 215         return (val);
 216 }
 217
 218 void
 219 dl10019_mii_writereg(device_t self, int phy, int reg, int val)
 220 {
 221         struct ne2000_softc *nsc = device_private(self);
 222         const struct mii_bitbang_ops *ops;
 223
 224         ops = (nsc->sc_type == NE2000_TYPE_DL10022) ?
 225             &dl10022_mii_bitbang_ops : &dl10019_mii_bitbang_ops;
 226
 227         mii_bitbang_writereg(self, ops, phy, reg, val);
 228 }
 229
 230 void
 231 dl10019_mii_statchg(device_t self)
 232 {
 233         struct dp8390_softc *sc = device_private(self);
 234         struct ne2000_softc *nsc = device_private(self);
 235
 236         /*
 237          * Disable collision detection on the DL10022 if
 238          * we are on a full-duplex link.
 239          */
 240         if (nsc->sc_type == NE2000_TYPE_DL10022) {
 241                 u_int8_t diag;
 242
 243                 if (sc->sc_mii.mii_media_active & IFM_FDX)
 244                         diag = DL0_DIAG_NOCOLLDETECT;
 245                 else
 246                         diag = 0;
 247                 bus_space_write_1(sc->sc_regt, sc->sc_regh,
 248                     NEDL_DL0_DIAG, diag);
 249         }
 250 }