The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/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 TRUEPHY_FRAMELEN(mtu)   \
   61     (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN + (mtu) + ETHER_CRC_LEN)
   62 
   63 static int      truephy_service(struct mii_softc *, struct mii_data *, int);
   64 static int      truephy_attach(device_t);
   65 static int      truephy_probe(device_t);
   66 static void     truephy_reset(struct mii_softc *);
   67 static void     truephy_status(struct mii_softc *);
   68 
   69 static device_method_t truephy_methods[] = {
   70         /* device interface */
   71         DEVMETHOD(device_probe,         truephy_probe),
   72         DEVMETHOD(device_attach,        truephy_attach),
   73         DEVMETHOD(device_detach,        mii_phy_detach),
   74         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   75         DEVMETHOD_END
   76 };
   77 
   78 static const struct mii_phydesc truephys[] = {
   79         MII_PHY_DESC(AGERE,     ET1011),
   80         MII_PHY_DESC(AGERE,     ET1011C),
   81         MII_PHY_END
   82 };
   83 
   84 static devclass_t truephy_devclass;
   85 
   86 static driver_t truephy_driver = {
   87         "truephy",
   88         truephy_methods,
   89         sizeof(struct mii_softc)
   90 };
   91 
   92 DRIVER_MODULE(truephy, miibus, truephy_driver, truephy_devclass, 0, 0);
   93 
   94 static const struct mii_phy_funcs truephy_funcs = {
   95         truephy_service,
   96         truephy_status,
   97         truephy_reset
   98 };
   99 
  100 static const struct truephy_dsp {
  101         uint16_t        index;
  102         uint16_t        data;
  103 } truephy_dspcode[] = {
  104         { 0x880b,       0x0926 },       /* AfeIfCreg4B1000Msbs */
  105         { 0x880c,       0x0926 },       /* AfeIfCreg4B100Msbs */
  106         { 0x880d,       0x0926 },       /* AfeIfCreg4B10Msbs */
  107 
  108         { 0x880e,       0xb4d3 },       /* AfeIfCreg4B1000Lsbs */
  109         { 0x880f,       0xb4d3 },       /* AfeIfCreg4B100Lsbs */
  110         { 0x8810,       0xb4d3 },       /* AfeIfCreg4B10Lsbs */
  111 
  112         { 0x8805,       0xb03e },       /* AfeIfCreg3B1000Msbs */
  113         { 0x8806,       0xb03e },       /* AfeIfCreg3B100Msbs */
  114         { 0x8807,       0xff00 },       /* AfeIfCreg3B10Msbs */
  115 
  116         { 0x8808,       0xe090 },       /* AfeIfCreg3B1000Lsbs */
  117         { 0x8809,       0xe110 },       /* AfeIfCreg3B100Lsbs */
  118         { 0x880a,       0x0000 },       /* AfeIfCreg3B10Lsbs */
  119 
  120         { 0x300d,       1      },       /* DisableNorm */
  121 
  122         { 0x280c,       0x0180 },       /* LinkHoldEnd */
  123 
  124         { 0x1c21,       0x0002 },       /* AlphaM */
  125 
  126         { 0x3821,       6      },       /* FfeLkgTx0 */
  127         { 0x381d,       1      },       /* FfeLkg1g4 */
  128         { 0x381e,       1      },       /* FfeLkg1g5 */
  129         { 0x381f,       1      },       /* FfeLkg1g6 */
  130         { 0x3820,       1      },       /* FfeLkg1g7 */
  131 
  132         { 0x8402,       0x01f0 },       /* Btinact */
  133         { 0x800e,       20     },       /* LftrainTime */
  134         { 0x800f,       24     },       /* DvguardTime */
  135         { 0x8010,       46     }        /* IdlguardTime */
  136 };
  137 
  138 static int
  139 truephy_probe(device_t dev)
  140 {
  141 
  142         return (mii_phy_dev_probe(dev, truephys, BUS_PROBE_DEFAULT));
  143 }
  144 
  145 static int
  146 truephy_attach(device_t dev)
  147 {
  148         struct mii_softc *sc;
  149 
  150         sc = device_get_softc(dev);
  151 
  152         mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
  153            &truephy_funcs, 0);
  154 
  155         PHY_RESET(sc);
  156 
  157         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
  158         if (sc->mii_capabilities & BMSR_EXTSTAT) {
  159                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  160                 /* No 1000baseT half-duplex support */
  161                 sc->mii_extcapabilities &= ~EXTSR_1000THDX;
  162         }
  163 
  164         device_printf(dev, " ");
  165         mii_phy_add_media(sc);
  166         printf("\n");
  167 
  168         MIIBUS_MEDIAINIT(sc->mii_dev);
  169         return (0);
  170 }
  171 
  172 static int
  173 truephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  174 {
  175         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  176         int bmcr;
  177 
  178         switch (cmd) {
  179         case MII_POLLSTAT:
  180                 break;
  181 
  182         case MII_MEDIACHG:
  183                 /*
  184                  * If the interface is not up, don't do anything.
  185                  */
  186                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  187                         break;
  188 
  189                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  190                         bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_AUTOEN;
  191                         PHY_WRITE(sc, MII_BMCR, bmcr);
  192                         PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_PDOWN);
  193                 }
  194 
  195                 mii_phy_setmedia(sc);
  196 
  197                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  198                         bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_PDOWN;
  199                         PHY_WRITE(sc, MII_BMCR, bmcr);
  200 
  201                         if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  202                                 PHY_WRITE(sc, MII_BMCR,
  203                                     bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
  204                         }
  205                 }
  206                 break;
  207 
  208         case MII_TICK:
  209                 if (mii_phy_tick(sc) == EJUSTRETURN)
  210                         return (0);
  211                 break;
  212         }
  213 
  214         /* Update the media status. */
  215         PHY_STATUS(sc);
  216 
  217         /* Callback if something changed. */
  218         mii_phy_update(sc, cmd);
  219         return (0);
  220 }
  221 
  222 static void
  223 truephy_reset(struct mii_softc *sc)
  224 {
  225         int i;
  226 
  227         if (sc->mii_mpd_model == MII_MODEL_AGERE_ET1011) {
  228                 mii_phy_reset(sc);
  229                 return;
  230         }
  231 
  232         for (i = 0; i < 2; ++i) {
  233                 PHY_READ(sc, MII_PHYIDR1);
  234                 PHY_READ(sc, MII_PHYIDR2);
  235 
  236                 PHY_READ(sc, TRUEPHY_CTRL);
  237                 PHY_WRITE(sc, TRUEPHY_CTRL,
  238                           TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1);
  239 
  240                 PHY_WRITE(sc, TRUEPHY_INDEX, TRUEPHY_INDEX_MAGIC);
  241                 PHY_READ(sc, TRUEPHY_DATA);
  242 
  243                 PHY_WRITE(sc, TRUEPHY_CTRL, TRUEPHY_CTRL_RSV1);
  244         }
  245 
  246         PHY_READ(sc, MII_BMCR);
  247         PHY_READ(sc, TRUEPHY_CTRL);
  248         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_PDOWN | BMCR_S1000);
  249         PHY_WRITE(sc, TRUEPHY_CTRL,
  250                   TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1 | TRUEPHY_CTRL_RSV0);
  251 
  252 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
  253 
  254         for (i = 0; i < N(truephy_dspcode); ++i) {
  255                 const struct truephy_dsp *dsp = &truephy_dspcode[i];
  256 
  257                 PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
  258                 PHY_WRITE(sc, TRUEPHY_DATA, dsp->data);
  259 
  260                 PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
  261                 PHY_READ(sc, TRUEPHY_DATA);
  262         }
  263 
  264 #undef N
  265 
  266         PHY_READ(sc, MII_BMCR);
  267         PHY_READ(sc, TRUEPHY_CTRL);
  268         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN |  BMCR_S1000);
  269         PHY_WRITE(sc, TRUEPHY_CTRL, TRUEPHY_CTRL_RSV1);
  270 
  271         mii_phy_reset(sc);
  272 
  273         if (TRUEPHY_FRAMELEN(sc->mii_pdata->mii_ifp->if_mtu) > 2048) {
  274                 int conf;
  275 
  276                 conf = PHY_READ(sc, TRUEPHY_CONF);
  277                 conf &= ~TRUEPHY_CONF_TXFIFO_MASK;
  278                 conf |= TRUEPHY_CONF_TXFIFO_24;
  279                 PHY_WRITE(sc, TRUEPHY_CONF, conf);
  280         }
  281 }
  282 
  283 static void
  284 truephy_status(struct mii_softc *sc)
  285 {
  286         struct mii_data *mii = sc->mii_pdata;
  287         int bmsr, bmcr, sr;
  288 
  289         mii->mii_media_status = IFM_AVALID;
  290         mii->mii_media_active = IFM_ETHER;
  291 
  292         sr = PHY_READ(sc, TRUEPHY_SR);
  293         bmcr = PHY_READ(sc, MII_BMCR);
  294 
  295         bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
  296         if (bmsr & BMSR_LINK)
  297                 mii->mii_media_status |= IFM_ACTIVE;
  298 
  299         if (bmcr & BMCR_AUTOEN) {
  300                 if ((bmsr & BMSR_ACOMP) == 0) {
  301                         mii->mii_media_active |= IFM_NONE;
  302                         return;
  303                 }
  304         }
  305 
  306         switch (sr & TRUEPHY_SR_SPD_MASK) {
  307         case TRUEPHY_SR_SPD_1000T:
  308                 mii->mii_media_active |= IFM_1000_T;
  309                 break;
  310         case TRUEPHY_SR_SPD_100TX:
  311                 mii->mii_media_active |= IFM_100_TX;
  312                 break;
  313         case TRUEPHY_SR_SPD_10T:
  314                 mii->mii_media_active |= IFM_10_T;
  315                 break;
  316         default:
  317                 /* XXX will this ever happen? */
  318                 printf("invalid media SR %#x\n", sr);
  319                 mii->mii_media_active |= IFM_NONE;
  320                 return;
  321         }
  322 
  323         if (sr & TRUEPHY_SR_FDX)
  324                 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
  325         else
  326                 mii->mii_media_active |= IFM_HDX;
  327 }

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