sys/dev/mii/makphy.c

   1 /*      $NetBSD: makphy.c,v 1.32 2009/10/19 18:41:14 bouyer Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1998, 1999, 2000, 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 of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  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 THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  46  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  47  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  48  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  49  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  51  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  52  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  53  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  54  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  55  */
  56
  57 /*
  58  * Driver for the Marvell 88E1000 ``Alaska'' 10/100/1000 PHY.
  59  */
  60
  61 #include <sys/cdefs.h>
  62 __KERNEL_RCSID(0, "$NetBSD: makphy.c,v 1.32 2009/10/19 18:41:14 bouyer Exp $");
  63
  64 #include <sys/param.h>
  65 #include <sys/systm.h>
  66 #include <sys/kernel.h>
  67 #include <sys/device.h>
  68 #include <sys/socket.h>
  69 #include <sys/errno.h>
  70
  71 #include <net/if.h>
  72 #include <net/if_media.h>
  73
  74 #include <dev/mii/mii.h>
  75 #include <dev/mii/miivar.h>
  76 #include <dev/mii/miidevs.h>
  77
  78 #include <dev/mii/makphyreg.h>
  79
  80 static int      makphymatch(device_t, cfdata_t, void *);
  81 static void     makphyattach(device_t, device_t, void *);
  82
  83 CFATTACH_DECL_NEW(makphy, sizeof(struct mii_softc),
  84     makphymatch, makphyattach, mii_phy_detach, mii_phy_activate);
  85
  86 static int      makphy_service(struct mii_softc *, struct mii_data *, int);
  87 static void     makphy_status(struct mii_softc *);
  88 static void     makphy_reset(struct mii_softc *);
  89
  90 static const struct mii_phy_funcs makphy_funcs = {
  91         makphy_service, makphy_status, makphy_reset,
  92 };
  93
  94 static const struct mii_phydesc makphys[] = {
  95         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1000_3,
  96           MII_STR_xxMARVELL_E1000_3 },
  97
  98         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1000_5,
  99           MII_STR_xxMARVELL_E1000_5 },
 100
 101         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1011,
 102           MII_STR_xxMARVELL_E1011 },
 103
 104         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1149,
 105           MII_STR_xxMARVELL_E1149 },
 106
 107         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1111,
 108           MII_STR_xxMARVELL_E1111 },
 109
 110         { MII_OUI_xxMARVELL,            MII_MODEL_xxMARVELL_E1116,
 111           MII_STR_xxMARVELL_E1116 },
 112
 113         { 0,                            0,
 114           NULL },
 115 };
 116
 117 static int
 118 makphymatch(device_t parent, cfdata_t match, void *aux)
 119 {
 120         struct mii_attach_args *ma = aux;
 121
 122         if (mii_phy_match(ma, makphys) != NULL)
 123                 return (10);
 124
 125         return (0);
 126 }
 127
 128 static void
 129 makphyattach(device_t parent, device_t self, void *aux)
 130 {
 131         struct mii_softc *sc = device_private(self);
 132         struct mii_attach_args *ma = aux;
 133         struct mii_data *mii = ma->mii_data;
 134         const struct mii_phydesc *mpd;
 135
 136         mpd = mii_phy_match(ma, makphys);
 137         aprint_naive(": Media interface\n");
 138         aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
 139
 140         sc->mii_dev = self;
 141         sc->mii_inst = mii->mii_instance;
 142         sc->mii_phy = ma->mii_phyno;
 143         sc->mii_funcs = &makphy_funcs;
 144         sc->mii_pdata = mii;
 145         sc->mii_flags = ma->mii_flags;
 146         sc->mii_anegticks = MII_ANEGTICKS;
 147
 148         PHY_RESET(sc);
 149
 150         sc->mii_capabilities =
 151             PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
 152         if (sc->mii_capabilities & BMSR_EXTSTAT)
 153                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
 154
 155         aprint_normal_dev(self, "");
 156         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
 157             (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
 158                 aprint_error("no media present");
 159         else
 160                 mii_phy_add_media(sc);
 161         aprint_normal("\n");
 162 }
 163
 164 static void
 165 makphy_reset(struct mii_softc *sc)
 166 {
 167         uint16_t pscr;
 168
 169         /* Assert CRS on transmit */
 170         pscr = PHY_READ(sc, MII_MAKPHY_PSCR);
 171         PHY_WRITE(sc, MII_MAKPHY_PSCR, pscr | PSCR_CRS_ON_TX);
 172
 173         mii_phy_reset(sc);
 174 }
 175
 176 static int
 177 makphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
 178 {
 179         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
 180         int reg;
 181
 182         switch (cmd) {
 183         case MII_POLLSTAT:
 184                 /*
 185                  * If we're not polling our PHY instance, just return.
 186                  */
 187                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
 188                         return (0);
 189                 break;
 190
 191         case MII_MEDIACHG:
 192                 /*
 193                  * If the media indicates a different PHY instance,
 194                  * isolate ourselves.
 195                  */
 196                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
 197                         reg = PHY_READ(sc, MII_BMCR);
 198                         PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
 199                         return (0);
 200                 }
 201
 202                 /*
 203                  * If the interface is not up, don't do anything.
 204                  */
 205                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
 206                         break;
 207
 208                 mii_phy_setmedia(sc);
 209                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
 210                         /*
 211                          * when not in auto mode, we need to restart nego
 212                          * anyway, or a switch from a fixed mode to another
 213                          * fixed mode may not be seen by the switch.
 214                          */
 215                         PHY_WRITE(sc, MII_BMCR,
 216                             PHY_READ(sc, MII_BMCR) | BMCR_STARTNEG);
 217                 }
 218                 break;
 219
 220         case MII_TICK:
 221                 /*
 222                  * If we're not currently selected, just return.
 223                  */
 224                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
 225                         return (0);
 226
 227                 if (mii_phy_tick(sc) == EJUSTRETURN)
 228                         return (0);
 229                 break;
 230
 231         case MII_DOWN:
 232                 mii_phy_down(sc);
 233                 return (0);
 234         }
 235
 236         /* Update the media status. */
 237         mii_phy_status(sc);
 238
 239         /* Callback if something changed. */
 240         mii_phy_update(sc, cmd);
 241         return (0);
 242 }
 243
 244 static void
 245 makphy_status(struct mii_softc *sc)
 246 {
 247         struct mii_data *mii = sc->mii_pdata;
 248         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
 249         int bmcr, pssr, gtsr;
 250
 251         mii->mii_media_status = IFM_AVALID;
 252         mii->mii_media_active = IFM_ETHER;
 253
 254         pssr = PHY_READ(sc, MII_MAKPHY_PSSR);
 255
 256         if (pssr & PSSR_LINK)
 257                 mii->mii_media_status |= IFM_ACTIVE;
 258
 259         bmcr = PHY_READ(sc, MII_BMCR);
 260         if (bmcr & BMCR_ISO) {
 261                 mii->mii_media_active |= IFM_NONE;
 262                 mii->mii_media_status = 0;
 263                 return;
 264         }
 265
 266         if (bmcr & BMCR_LOOP)
 267                 mii->mii_media_active |= IFM_LOOP;
 268
 269         if (bmcr & BMCR_AUTOEN) {
 270                 /*
 271                  * The media status bits are only valid of autonegotiation
 272                  * has completed (or it's disabled).
 273                  */
 274                 if ((pssr & PSSR_RESOLVED) == 0) {
 275                         /* Erg, still trying, I guess... */
 276                         mii->mii_media_active |= IFM_NONE;
 277                         return;
 278                 }
 279
 280                 switch (PSSR_SPEED_get(pssr)) {
 281                 case SPEED_1000:
 282                         mii->mii_media_active |= IFM_1000_T;
 283                         gtsr = PHY_READ(sc, MII_100T2SR);
 284                         if (gtsr & GTSR_MS_RES)
 285                                 mii->mii_media_active |= IFM_ETH_MASTER;
 286                         break;
 287
 288                 case SPEED_100:
 289                         mii->mii_media_active |= IFM_100_TX;
 290                         break;
 291
 292                 case SPEED_10:
 293                         mii->mii_media_active |= IFM_10_T;
 294                         break;
 295
 296                 default:
 297                         mii->mii_media_active |= IFM_NONE;
 298                         mii->mii_media_status = 0;
 299                         return;
 300                 }
 301
 302                 if (pssr & PSSR_DUPLEX)
 303                         mii->mii_media_active |=
 304                             IFM_FDX | mii_phy_flowstatus(sc);
 305         } else
 306                 mii->mii_media_active = ife->ifm_media;
 307 }