jmphy.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org>
    5  * All rights reserved.
    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  * 1. Redistributions of source code must retain the above copyright
   11  *    notice unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 /*
   34  * Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY.
   35  */
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 #include <sys/kernel.h>
   40 #include <sys/module.h>
   41 #include <sys/socket.h>
   42 #include <sys/bus.h>
   43 
   44 #include <net/if.h>
   45 #include <net/if_var.h>
   46 #include <net/if_media.h>
   47 
   48 #include <dev/mii/mii.h>
   49 #include <dev/mii/miivar.h>
   50 #include "miidevs.h"
   51 
   52 #include <dev/mii/jmphyreg.h>
   53 
   54 #include "miibus_if.h"
   55 
   56 static int      jmphy_probe(device_t);
   57 static int      jmphy_attach(device_t);
   58 static void     jmphy_reset(struct mii_softc *);
   59 static uint16_t jmphy_anar(struct ifmedia_entry *);
   60 static int      jmphy_setmedia(struct mii_softc *, struct ifmedia_entry *);
   61 
   62 static device_method_t jmphy_methods[] = {
   63         /* Device interface. */
   64         DEVMETHOD(device_probe,         jmphy_probe),
   65         DEVMETHOD(device_attach,        jmphy_attach),
   66         DEVMETHOD(device_detach,        mii_phy_detach),
   67         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   68         DEVMETHOD_END
   69 };
   70 
   71 static devclass_t jmphy_devclass;
   72 static driver_t jmphy_driver = {
   73         "jmphy",
   74         jmphy_methods,
   75         sizeof(struct mii_softc)
   76 };
   77 
   78 DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, 0, 0);
   79 
   80 static int      jmphy_service(struct mii_softc *, struct mii_data *, int);
   81 static void     jmphy_status(struct mii_softc *);
   82 
   83 static const struct mii_phydesc jmphys[] = {
   84         MII_PHY_DESC(JMICRON, JMP202),
   85         MII_PHY_DESC(JMICRON, JMP211),
   86         MII_PHY_END
   87 };
   88 
   89 static const struct mii_phy_funcs jmphy_funcs = {
   90         jmphy_service,
   91         jmphy_status,
   92         jmphy_reset
   93 };
   94 
   95 static int
   96 jmphy_probe(device_t dev)
   97 {
   98 
   99         return (mii_phy_dev_probe(dev, jmphys, BUS_PROBE_DEFAULT));
  100 }
  101 
  102 static int
  103 jmphy_attach(device_t dev)
  104 {
  105         u_int flags;
  106 
  107         flags = 0;
  108         if (mii_dev_mac_match(dev, "jme") &&
  109             (miibus_get_flags(dev) & MIIF_MACPRIV0) != 0)
  110                 flags |= MIIF_PHYPRIV0;
  111         mii_phy_dev_attach(dev, flags, &jmphy_funcs, 1);
  112         return (0);
  113 }
  114 
  115 static int
  116 jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
  117 {
  118         struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
  119 
  120         switch (cmd) {
  121         case MII_POLLSTAT:
  122                 break;
  123 
  124         case MII_MEDIACHG:
  125                 if (jmphy_setmedia(sc, ife) != EJUSTRETURN)
  126                         return (EINVAL);
  127                 break;
  128 
  129         case MII_TICK:
  130                 /*
  131                  * Only used for autonegotiation.
  132                  */
  133                 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
  134                         sc->mii_ticks = 0;
  135                         break;
  136                 }
  137 
  138                 /* Check for link. */
  139                 if ((PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) != 0) {
  140                         sc->mii_ticks = 0;
  141                         break;
  142                 }
  143 
  144                 /* Announce link loss right after it happens. */
  145                 if (sc->mii_ticks++ == 0)
  146                         break;
  147                 if (sc->mii_ticks <= sc->mii_anegticks)
  148                         return (0);
  149 
  150                 sc->mii_ticks = 0;
  151                 (void)jmphy_setmedia(sc, ife);
  152                 break;
  153         }
  154 
  155         /* Update the media status. */
  156         PHY_STATUS(sc);
  157 
  158         /* Callback if something changed. */
  159         mii_phy_update(sc, cmd);
  160         return (0);
  161 }
  162 
  163 static void
  164 jmphy_status(struct mii_softc *sc)
  165 {
  166         struct mii_data *mii = sc->mii_pdata;
  167         int bmcr, ssr;
  168 
  169         mii->mii_media_status = IFM_AVALID;
  170         mii->mii_media_active = IFM_ETHER;
  171 
  172         ssr = PHY_READ(sc, JMPHY_SSR);
  173         if ((ssr & JMPHY_SSR_LINK_UP) != 0)
  174                 mii->mii_media_status |= IFM_ACTIVE;
  175 
  176         bmcr = PHY_READ(sc, MII_BMCR);
  177         if ((bmcr & BMCR_ISO) != 0) {
  178                 mii->mii_media_active |= IFM_NONE;
  179                 mii->mii_media_status = 0;
  180                 return;
  181         }
  182 
  183         if ((bmcr & BMCR_LOOP) != 0)
  184                 mii->mii_media_active |= IFM_LOOP;
  185 
  186         if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) {
  187                 /* Erg, still trying, I guess... */
  188                 mii->mii_media_active |= IFM_NONE;
  189                 return;
  190         }
  191 
  192         switch ((ssr & JMPHY_SSR_SPEED_MASK)) {
  193         case JMPHY_SSR_SPEED_1000:
  194                 mii->mii_media_active |= IFM_1000_T;
  195                 /*
  196                  * jmphy(4) got a valid link so reset mii_ticks.
  197                  * Resetting mii_ticks is needed in order to
  198                  * detect link loss after auto-negotiation.
  199                  */
  200                 sc->mii_ticks = 0;
  201                 break;
  202         case JMPHY_SSR_SPEED_100:
  203                 mii->mii_media_active |= IFM_100_TX;
  204                 sc->mii_ticks = 0;
  205                 break;
  206         case JMPHY_SSR_SPEED_10:
  207                 mii->mii_media_active |= IFM_10_T;
  208                 sc->mii_ticks = 0;
  209                 break;
  210         default:
  211                 mii->mii_media_active |= IFM_NONE;
  212                 return;
  213         }
  214 
  215         if ((ssr & JMPHY_SSR_DUPLEX) != 0)
  216                 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
  217         else
  218                 mii->mii_media_active |= IFM_HDX;
  219 
  220         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
  221                 if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0)
  222                         mii->mii_media_active |= IFM_ETH_MASTER;
  223         }
  224 }
  225 
  226 static void
  227 jmphy_reset(struct mii_softc *sc)
  228 {
  229         uint16_t t2cr, val;
  230         int i;
  231 
  232         /* Disable sleep mode. */
  233         PHY_WRITE(sc, JMPHY_TMCTL,
  234             PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB);
  235         PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN);
  236 
  237         for (i = 0; i < 1000; i++) {
  238                 DELAY(1);
  239                 if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0)
  240                         break;
  241         }
  242         /* Perform vendor recommended PHY calibration. */
  243         if ((sc->mii_flags & MIIF_PHYPRIV0) != 0) {
  244                 /* Select PHY test mode 1. */
  245                 t2cr = PHY_READ(sc, MII_100T2CR);
  246                 t2cr &= ~GTCR_TEST_MASK;
  247                 t2cr |= 0x2000;
  248                 PHY_WRITE(sc, MII_100T2CR, t2cr);
  249                 /* Apply calibration patch. */
  250                 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_READ |
  251                     JMPHY_EXT_COMM_2);
  252                 val = PHY_READ(sc, JMPHY_SPEC_DATA);
  253                 val &= ~0x0002;
  254                 val |= 0x0010 | 0x0001;
  255                 PHY_WRITE(sc, JMPHY_SPEC_DATA, val);
  256                 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_WRITE |
  257                     JMPHY_EXT_COMM_2);
  258 
  259                 /* XXX 20ms to complete recalibration. */
  260                 DELAY(20 * 1000);
  261 
  262                 PHY_READ(sc, MII_100T2CR);
  263                 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_READ |
  264                     JMPHY_EXT_COMM_2);
  265                 val = PHY_READ(sc, JMPHY_SPEC_DATA);
  266                 val &= ~(0x0001 | 0x0002 | 0x0010);
  267                 PHY_WRITE(sc, JMPHY_SPEC_DATA, val);
  268                 PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_WRITE |
  269                     JMPHY_EXT_COMM_2);
  270                 /* Disable PHY test mode. */
  271                 PHY_READ(sc, MII_100T2CR);
  272                 t2cr &= ~GTCR_TEST_MASK;
  273                 PHY_WRITE(sc, MII_100T2CR, t2cr);
  274         }
  275 }
  276 
  277 static uint16_t
  278 jmphy_anar(struct ifmedia_entry *ife)
  279 {
  280         uint16_t anar;
  281 
  282         anar = 0;
  283         switch (IFM_SUBTYPE(ife->ifm_media)) {
  284         case IFM_AUTO:
  285                 anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10;
  286                 break;
  287         case IFM_1000_T:
  288                 break;
  289         case IFM_100_TX:
  290                 anar |= ANAR_TX | ANAR_TX_FD;
  291                 break;
  292         case IFM_10_T:
  293                 anar |= ANAR_10 | ANAR_10_FD;
  294                 break;
  295         default:
  296                 break;
  297         }
  298 
  299         return (anar);
  300 }
  301 
  302 static int
  303 jmphy_setmedia(struct mii_softc *sc, struct ifmedia_entry *ife)
  304 {
  305         uint16_t anar, bmcr, gig;
  306 
  307         gig = 0;
  308         bmcr = PHY_READ(sc, MII_BMCR);
  309         switch (IFM_SUBTYPE(ife->ifm_media)) {
  310         case IFM_AUTO:
  311                 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
  312                 break;
  313         case IFM_1000_T:
  314                 gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
  315                 break;
  316         case IFM_100_TX:
  317         case IFM_10_T:
  318                 break;
  319         case IFM_NONE:
  320                 PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN);
  321                 return (EJUSTRETURN);
  322         default:
  323                 return (EINVAL);
  324         }
  325 
  326         anar = jmphy_anar(ife);
  327         if ((IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO ||
  328             (ife->ifm_media & IFM_FDX) != 0) &&
  329             ((ife->ifm_media & IFM_FLOW) != 0 ||
  330             (sc->mii_flags & MIIF_FORCEPAUSE) != 0))
  331                 anar |= ANAR_PAUSE_TOWARDS;
  332 
  333         if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
  334                 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
  335                         gig |= GTCR_MAN_MS;
  336                         if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
  337                                 gig |= GTCR_ADV_MS;
  338                 }
  339                 PHY_WRITE(sc, MII_100T2CR, gig);
  340         }
  341         PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
  342         PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
  343 
  344         return (EJUSTRETURN);
  345 }
Cache object: 03fe4472e552322c743f01f971d0e875
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/dev/mii/jmphy.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/jmphy.c
