truephy.c

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    1 /*-
    2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
    3  * 
    4  * This code is derived from software contributed to The DragonFly Project
    5  * by Sepherosa Ziehau <sepherosa@gmail.com>
    6  * 
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in
   15  *    the documentation and/or other materials provided with the
   16  *    distribution.
   17  * 3. Neither the name of The DragonFly Project nor the names of its
   18  *    contributors may be used to endorse or promote products derived
   19  *    from this software without specific, prior written permission.
   20  * 
   21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
   25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
   27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  * 
   34  * $DragonFly: src/sys/dev/netif/mii_layer/truephy.c,v 1.3 2008/02/10 07:29:27 sephe Exp $
   35  * $FreeBSD$
   36  */
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/kernel.h>
   41 #include <sys/socket.h>
   42 #include <sys/errno.h>
   43 #include <sys/module.h>
   44 #include <sys/bus.h>
   45 
   46 #include <net/if.h>
   47 #include <net/if_media.h>
   48 #include <net/if_arp.h>
   49 #include <net/ethernet.h>
   50 #include <net/if_vlan_var.h>
   51 
   52 #include <dev/mii/mii.h>
   53 #include <dev/mii/miivar.h>
   54 #include "miidevs.h"
   55 
   56 #include <dev/mii/truephyreg.h>
   57 
   58 #include "miibus_if.h"
   59 
   60 #define FRAMELEN(mtu)   (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN + (mtu) + ETHER_CRC_LEN)
   61 
   62 static int      truephy_service(struct mii_softc *, struct mii_data *, int);
   63 static int      truephy_attach(device_t);
   64 static int      truephy_probe(device_t);
   65 static void     truephy_reset(struct mii_softc *);
   66 static void     truephy_status(struct mii_softc *);
   67 
   68 static device_method_t truephy_methods[] = {
   69         /* device interface */
   70         DEVMETHOD(device_probe,         truephy_probe),
   71         DEVMETHOD(device_attach,        truephy_attach),
   72         DEVMETHOD(device_detach,        mii_phy_detach),
   73         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   74         { 0, 0 }
   75 };
   76 
   77 static const struct mii_phydesc truephys[] = {
   78         MII_PHY_DESC(AGERE,     ET1011C),
   79         MII_PHY_END
   80 };
   81 
   82 static devclass_t truephy_devclass;
   83 
   84 static driver_t truephy_driver = {
   85         "truephy",
   86         truephy_methods,
   87         sizeof(struct mii_softc)
   88 };
   89 
   90 DRIVER_MODULE(truephy, miibus, truephy_driver, truephy_devclass, 0, 0);
   91 
   92 static const struct truephy_dsp {
   93         uint16_t        index;
   94         uint16_t        data;
   95 } truephy_dspcode[] = {
   96         { 0x880b,       0x0926 },       /* AfeIfCreg4B1000Msbs */
   97         { 0x880c,       0x0926 },       /* AfeIfCreg4B100Msbs */
   98         { 0x880d,       0x0926 },       /* AfeIfCreg4B10Msbs */
   99 
  100         { 0x880e,       0xb4d3 },       /* AfeIfCreg4B1000Lsbs */
  101         { 0x880f,       0xb4d3 },       /* AfeIfCreg4B100Lsbs */
  102         { 0x8810,       0xb4d3 },       /* AfeIfCreg4B10Lsbs */
  103 
  104         { 0x8805,       0xb03e },       /* AfeIfCreg3B1000Msbs */
  105         { 0x8806,       0xb03e },       /* AfeIfCreg3B100Msbs */
  106         { 0x8807,       0xff00 },       /* AfeIfCreg3B10Msbs */
  107 
  108         { 0x8808,       0xe090 },       /* AfeIfCreg3B1000Lsbs */
  109         { 0x8809,       0xe110 },       /* AfeIfCreg3B100Lsbs */
  110         { 0x880a,       0x0000 },       /* AfeIfCreg3B10Lsbs */
  111 
  112         { 0x300d,       1      },       /* DisableNorm */
  113 
  114         { 0x280c,       0x0180 },       /* LinkHoldEnd */
  115 
  116         { 0x1c21,       0x0002 },       /* AlphaM */
  117 
  118         { 0x3821,       6      },       /* FfeLkgTx0 */
  119         { 0x381d,       1      },       /* FfeLkg1g4 */
  120         { 0x381e,       1      },       /* FfeLkg1g5 */
  121         { 0x381f,       1      },       /* FfeLkg1g6 */
  122         { 0x3820,       1      },       /* FfeLkg1g7 */
  123 
  124         { 0x8402,       0x01f0 },       /* Btinact */
  125         { 0x800e,       20     },       /* LftrainTime */
  126         { 0x800f,       24     },       /* DvguardTime */
  127         { 0x8010,       46     }        /* IdlguardTime */
  128 };
  129 
  130 static int
  131 truephy_probe(device_t dev)
  132 {
  133 
  134         return (mii_phy_dev_probe(dev, truephys, BUS_PROBE_DEFAULT));
  135 }
  136 
  137 static int
  138 truephy_attach(device_t dev)
  139 {
  140         struct mii_softc *sc;
  141         struct mii_attach_args *ma;
  142         struct mii_data *mii;
  143 
  144         sc = device_get_softc(dev);
  145         ma = device_get_ivars(dev);
  146 
  147         sc->mii_phy = ma->mii_phyno;
  148         if (sc->mii_anegticks == 0)
  149                 sc->mii_anegticks = MII_ANEGTICKS;
  150         sc->mii_dev = device_get_parent(dev);
  151         mii = device_get_softc(sc->mii_dev);
  152         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  153 
  154         sc->mii_inst = mii->mii_instance;
  155         sc->mii_phy = ma->mii_phyno;
  156         sc->mii_service = truephy_service;
  157         sc->mii_pdata = mii;
  158 
  159         sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
  160 
  161         mii->mii_instance++;
  162 
  163         truephy_reset(sc);
  164 
  165         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  166         if (sc->mii_capabilities & BMSR_EXTSTAT) {
  167                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  168                 /* No 1000baseT half-duplex support */
  169                 sc->mii_extcapabilities &= ~EXTSR_1000THDX;
  170         }
  171 
  172         device_printf(dev, " ");
  173         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
  174             (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
  175                 printf("no media present");
  176         else
  177                 mii_phy_add_media(sc);
  178         printf("\n");
  179 
  180         MIIBUS_MEDIAINIT(sc->mii_dev);
  181         return 0;
  182 }
  183 
  184 static int
  185 truephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  186 {
  187         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  188         int bmcr;
  189 
  190         switch (cmd) {
  191         case MII_POLLSTAT:
  192                 /*
  193                  * If we're not polling our PHY instance, just return.
  194                  */
  195                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  196                         return 0;
  197                 break;
  198 
  199         case MII_MEDIACHG:
  200                 /*
  201                  * If the media indicates a different PHY instance,
  202                  * isolate ourselves.
  203                  */
  204                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  205                         bmcr = PHY_READ(sc, MII_BMCR);
  206                         PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
  207                         return 0;
  208                 }
  209 
  210                 /*
  211                  * If the interface is not up, don't do anything.
  212                  */
  213                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  214                         break;
  215 
  216                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  217                         bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_AUTOEN;
  218                         PHY_WRITE(sc, MII_BMCR, bmcr);
  219                         PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_PDOWN);
  220                 }
  221 
  222                 mii_phy_setmedia(sc);
  223 
  224                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  225                         bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_PDOWN;
  226                         PHY_WRITE(sc, MII_BMCR, bmcr);
  227 
  228                         if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  229                                 PHY_WRITE(sc, MII_BMCR,
  230                                           bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
  231                         }
  232                 }
  233                 break;
  234 
  235         case MII_TICK:
  236                 /*
  237                  * If we're not currently selected, just return.
  238                  */
  239                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  240                         return 0;
  241 
  242                 if (mii_phy_tick(sc) == EJUSTRETURN)
  243                         return 0;
  244                 break;
  245         }
  246 
  247         /* Update the media status. */
  248         truephy_status(sc);
  249 
  250         /* Callback if something changed. */
  251         mii_phy_update(sc, cmd);
  252         return 0;
  253 }
  254 
  255 static void
  256 truephy_reset(struct mii_softc *sc)
  257 {
  258         int i;
  259 
  260         for (i = 0; i < 2; ++i) {
  261                 PHY_READ(sc, MII_PHYIDR1);
  262                 PHY_READ(sc, MII_PHYIDR2);
  263 
  264                 PHY_READ(sc, TRUEPHY_CTRL);
  265                 PHY_WRITE(sc, TRUEPHY_CTRL,
  266                           TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1);
  267 
  268                 PHY_WRITE(sc, TRUEPHY_INDEX, TRUEPHY_INDEX_MAGIC);
  269                 PHY_READ(sc, TRUEPHY_DATA);
  270 
  271                 PHY_WRITE(sc, TRUEPHY_CTRL, TRUEPHY_CTRL_RSV1);
  272         }
  273 
  274         PHY_READ(sc, MII_BMCR);
  275         PHY_READ(sc, TRUEPHY_CTRL);
  276         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_PDOWN | BMCR_S1000);
  277         PHY_WRITE(sc, TRUEPHY_CTRL,
  278                   TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1 | TRUEPHY_CTRL_RSV0);
  279 
  280 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
  281 
  282         for (i = 0; i < N(truephy_dspcode); ++i) {
  283                 const struct truephy_dsp *dsp = &truephy_dspcode[i];
  284 
  285                 PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
  286                 PHY_WRITE(sc, TRUEPHY_DATA, dsp->data);
  287 
  288                 PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
  289                 PHY_READ(sc, TRUEPHY_DATA);
  290         }
  291 
  292 #undef N
  293 
  294         PHY_READ(sc, MII_BMCR);
  295         PHY_READ(sc, TRUEPHY_CTRL);
  296         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN |  BMCR_S1000);
  297         PHY_WRITE(sc, TRUEPHY_CTRL, TRUEPHY_CTRL_RSV1);
  298 
  299         mii_phy_reset(sc);
  300 
  301         if (FRAMELEN(sc->mii_pdata->mii_ifp->if_mtu) > 2048) {
  302                 int conf;
  303 
  304                 conf = PHY_READ(sc, TRUEPHY_CONF);
  305                 conf &= ~TRUEPHY_CONF_TXFIFO_MASK;
  306                 conf |= TRUEPHY_CONF_TXFIFO_24;
  307                 PHY_WRITE(sc, TRUEPHY_CONF, conf);
  308         }
  309 }
  310 
  311 static void
  312 truephy_status(struct mii_softc *sc)
  313 {
  314         struct mii_data *mii = sc->mii_pdata;
  315         int bmsr, bmcr, sr;
  316 
  317         mii->mii_media_status = IFM_AVALID;
  318         mii->mii_media_active = IFM_ETHER;
  319 
  320         sr = PHY_READ(sc, TRUEPHY_SR);
  321         bmcr = PHY_READ(sc, MII_BMCR);
  322 
  323         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  324         if (bmsr & BMSR_LINK)
  325                 mii->mii_media_status |= IFM_ACTIVE;
  326 
  327         if (bmcr & BMCR_AUTOEN) {
  328                 if ((bmsr & BMSR_ACOMP) == 0) {
  329                         mii->mii_media_active |= IFM_NONE;
  330                         return;
  331                 }
  332         }
  333 
  334         switch (sr & TRUEPHY_SR_SPD_MASK) {
  335         case TRUEPHY_SR_SPD_1000T:
  336                 mii->mii_media_active |= IFM_1000_T;
  337                 break;
  338         case TRUEPHY_SR_SPD_100TX:
  339                 mii->mii_media_active |= IFM_100_TX;
  340                 break;
  341         case TRUEPHY_SR_SPD_10T:
  342                 mii->mii_media_active |= IFM_10_T;
  343                 break;
  344         default:
  345                 /* XXX will this ever happen? */
  346                 printf("invalid media SR %#x\n", sr);
  347                 mii->mii_media_active |= IFM_NONE;
  348                 return;
  349         }
  350 
  351         if (sr & TRUEPHY_SR_FDX)
  352                 mii->mii_media_active |= IFM_FDX;
  353         else
  354                 mii->mii_media_active |= IFM_HDX;
  355 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/mii/truephy.c

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sys/dev/mii/truephy.c
