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 
   35 #include <sys/param.h>
   36 #include <sys/bus.h>
   37 #include <sys/kernel.h>
   38 
   39 #include <net/if.h>
   40 #include <net/if_media.h>
   41 #include <net/if_arp.h>
   42 #include <net/ethernet.h>
   43 #include <net/vlan/if_vlan_var.h>
   44 
   45 #include <dev/netif/mii_layer/mii.h>
   46 #include <dev/netif/mii_layer/miivar.h>
   47 #include <dev/netif/mii_layer/truephyreg.h>
   48 
   49 #include "miibus_if.h"
   50 #include "miidevs.h"
   51 
   52 #define FRAMELEN(mtu)   (ETHER_HDR_LEN + EVL_ENCAPLEN + (mtu) + ETHER_CRC_LEN)
   53 
   54 static int      truephy_service(struct mii_softc *, struct mii_data *, int);
   55 static int      truephy_attach(device_t);
   56 static int      truephy_probe(device_t);
   57 static void     truephy_reset(struct mii_softc *);
   58 static void     truephy_status(struct mii_softc *);
   59 
   60 static device_method_t truephy_methods[] = {
   61         /* device interface */
   62         DEVMETHOD(device_probe,         truephy_probe),
   63         DEVMETHOD(device_attach,        truephy_attach),
   64         DEVMETHOD(device_detach,        ukphy_detach),
   65         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   66         DEVMETHOD_END
   67 };
   68 
   69 static const struct mii_phydesc truephys[] = {
   70         MII_PHYDESC(AGERE,      ET1011),
   71         MII_PHYDESC(AGERE,      ET1011C),
   72         MII_PHYDESC_NULL
   73 };
   74 
   75 static devclass_t truephy_devclass;
   76 
   77 static driver_t truephy_driver = {
   78         "truephy",
   79         truephy_methods,
   80         sizeof(struct mii_softc)
   81 };
   82 
   83 DRIVER_MODULE(truephy, miibus, truephy_driver, truephy_devclass, NULL, NULL);
   84 
   85 static const struct truephy_dsp {
   86         uint16_t        index;
   87         uint16_t        data;
   88 } truephy_dspcode[] = {
   89         { 0x880b,       0x0926 },       /* AfeIfCreg4B1000Msbs */
   90         { 0x880c,       0x0926 },       /* AfeIfCreg4B100Msbs */
   91         { 0x880d,       0x0926 },       /* AfeIfCreg4B10Msbs */
   92 
   93         { 0x880e,       0xb4d3 },       /* AfeIfCreg4B1000Lsbs */
   94         { 0x880f,       0xb4d3 },       /* AfeIfCreg4B100Lsbs */
   95         { 0x8810,       0xb4d3 },       /* AfeIfCreg4B10Lsbs */
   96 
   97         { 0x8805,       0xb03e },       /* AfeIfCreg3B1000Msbs */
   98         { 0x8806,       0xb03e },       /* AfeIfCreg3B100Msbs */
   99         { 0x8807,       0xff00 },       /* AfeIfCreg3B10Msbs */
  100 
  101         { 0x8808,       0xe090 },       /* AfeIfCreg3B1000Lsbs */
  102         { 0x8809,       0xe110 },       /* AfeIfCreg3B100Lsbs */
  103         { 0x880a,       0x0000 },       /* AfeIfCreg3B10Lsbs */
  104 
  105         { 0x300d,       1      },       /* DisableNorm */
  106 
  107         { 0x280c,       0x0180 },       /* LinkHoldEnd */
  108 
  109         { 0x1c21,       0x0002 },       /* AlphaM */
  110 
  111         { 0x3821,       6      },       /* FfeLkgTx0 */
  112         { 0x381d,       1      },       /* FfeLkg1g4 */
  113         { 0x381e,       1      },       /* FfeLkg1g5 */
  114         { 0x381f,       1      },       /* FfeLkg1g6 */
  115         { 0x3820,       1      },       /* FfeLkg1g7 */
  116 
  117         { 0x8402,       0x01f0 },       /* Btinact */
  118         { 0x800e,       20     },       /* LftrainTime */
  119         { 0x800f,       24     },       /* DvguardTime */
  120         { 0x8010,       46     }        /* IdlguardTime */
  121 };
  122 
  123 static int
  124 truephy_probe(device_t dev)
  125 {
  126         struct mii_attach_args *ma = device_get_ivars(dev);
  127         const struct mii_phydesc *mpd;
  128 
  129         mpd = mii_phy_match(ma, truephys);
  130         if (mpd != NULL) {
  131                 device_set_desc(dev, mpd->mpd_name);
  132                 return 0;
  133         }
  134         return ENXIO;
  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         mii_softc_init(sc, ma);
  148         sc->mii_dev = device_get_parent(dev);
  149         mii = device_get_softc(sc->mii_dev);
  150         LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
  151 
  152         sc->mii_inst = mii->mii_instance;
  153         sc->mii_service = truephy_service;
  154         sc->mii_reset = truephy_reset;
  155         sc->mii_pdata = mii;
  156 
  157         sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
  158 
  159         mii->mii_instance++;
  160 
  161         truephy_reset(sc);
  162 
  163         sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
  164         if (sc->mii_capabilities & BMSR_EXTSTAT) {
  165                 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
  166                 /* No 1000baseT half-duplex support */
  167                 sc->mii_extcapabilities &= ~EXTSR_1000THDX;
  168         }
  169 
  170         device_printf(dev, " ");
  171         if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
  172             (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
  173                 kprintf("no media present");
  174         else
  175                 mii_phy_add_media(sc);
  176         kprintf("\n");
  177 
  178         MIIBUS_MEDIAINIT(sc->mii_dev);
  179         return 0;
  180 }
  181 
  182 static int
  183 truephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  184 {
  185         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  186         int bmcr;
  187 
  188         switch (cmd) {
  189         case MII_POLLSTAT:
  190                 /*
  191                  * If we're not polling our PHY instance, just return.
  192                  */
  193                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  194                         return 0;
  195                 break;
  196 
  197         case MII_MEDIACHG:
  198                 /*
  199                  * If the media indicates a different PHY instance,
  200                  * isolate ourselves.
  201                  */
  202                 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
  203                         bmcr = PHY_READ(sc, MII_BMCR);
  204                         PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
  205                         return 0;
  206                 }
  207 
  208                 /*
  209                  * If the interface is not up, don't do anything.
  210                  */
  211                 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
  212                         break;
  213 
  214                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  215                         bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_AUTOEN;
  216                         PHY_WRITE(sc, MII_BMCR, bmcr);
  217                         PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_PDOWN);
  218                 }
  219 
  220                 mii_phy_set_media(sc);
  221 
  222                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  223                         bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_PDOWN;
  224                         PHY_WRITE(sc, MII_BMCR, bmcr);
  225 
  226                         if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  227                                 PHY_WRITE(sc, MII_BMCR,
  228                                           bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
  229                         }
  230                 }
  231                 break;
  232 
  233         case MII_TICK:
  234                 /*
  235                  * If we're not currently selected, just return.
  236                  */
  237                 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
  238                         return 0;
  239 
  240                 if (mii_phy_tick(sc) == EJUSTRETURN)
  241                         return 0;
  242                 break;
  243         }
  244 
  245         /* Update the media status. */
  246         truephy_status(sc);
  247 
  248         /* Callback if something changed. */
  249         mii_phy_update(sc, cmd);
  250         return 0;
  251 }
  252 
  253 static void
  254 truephy_reset(struct mii_softc *sc)
  255 {
  256         int i;
  257 
  258         if (sc->mii_model == MII_MODEL_AGERE_ET1011) {
  259                 kprintf("phy phy phy model\n");
  260                 mii_phy_reset(sc);
  261                 return;
  262         }
  263 
  264         for (i = 0; i < 2; ++i) {
  265                 PHY_READ(sc, MII_PHYIDR1);
  266                 PHY_READ(sc, MII_PHYIDR2);
  267 
  268                 PHY_READ(sc, TRUEPHY_CTRL);
  269                 PHY_WRITE(sc, TRUEPHY_CTRL,
  270                           TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1);
  271 
  272                 PHY_WRITE(sc, TRUEPHY_INDEX, TRUEPHY_INDEX_MAGIC);
  273                 PHY_READ(sc, TRUEPHY_DATA);
  274 
  275                 PHY_WRITE(sc, TRUEPHY_CTRL, TRUEPHY_CTRL_RSV1);
  276         }
  277 
  278         PHY_READ(sc, MII_BMCR);
  279         PHY_READ(sc, TRUEPHY_CTRL);
  280         PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_PDOWN | BMCR_S1000);
  281         PHY_WRITE(sc, TRUEPHY_CTRL,
  282                   TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1 | TRUEPHY_CTRL_RSV0);
  283 
  284         for (i = 0; i < NELEM(truephy_dspcode); ++i) {
  285                 const struct truephy_dsp *dsp = &truephy_dspcode[i];
  286 
  287                 PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
  288                 PHY_WRITE(sc, TRUEPHY_DATA, dsp->data);
  289 
  290                 PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
  291                 PHY_READ(sc, TRUEPHY_DATA);
  292         }
  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                 kprintf("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/netif/mii_layer/truephy.c

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sys/dev/netif/mii_layer/truephy.c
