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Annotation of sys/dev/mii/txphy.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: txphy.c,v 1.10 2005/02/19 06:00:04 brad Exp $ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1999 Jason L. Wright (jason@thought.net)
        !             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, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  *
        !            16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            18:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
        !            19:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
        !            20:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
        !            21:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
        !            22:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
        !            24:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
        !            25:  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            26:  * POSSIBILITY OF SUCH DAMAGE.
        !            27:  */
        !            28:
        !            29: /*
        !            30:  * Driver for the Texas Instruments TNETE2101 phy.
        !            31:  */
        !            32:
        !            33: #include <sys/param.h>
        !            34: #include <sys/systm.h>
        !            35: #include <sys/kernel.h>
        !            36: #include <sys/device.h>
        !            37: #include <sys/socket.h>
        !            38: #include <sys/errno.h>
        !            39:
        !            40: #include <net/if.h>
        !            41: #include <net/if_media.h>
        !            42:
        !            43: #include <dev/mii/mii.h>
        !            44: #include <dev/mii/miivar.h>
        !            45: #include <dev/mii/miidevs.h>
        !            46:
        !            47: int    txphymatch(struct device *, void *, void *);
        !            48: void   txphyattach(struct device *, struct device *, void *);
        !            49:
        !            50: struct cfattach txphy_ca = {
        !            51:        sizeof(struct mii_softc), txphymatch, txphyattach, mii_phy_detach,
        !            52:            mii_phy_activate
        !            53: };
        !            54:
        !            55: struct cfdriver txphy_cd = {
        !            56:        NULL, "txphy", DV_DULL
        !            57: };
        !            58:
        !            59: int    txphy_service(struct mii_softc *, struct mii_data *, int);
        !            60:
        !            61: const struct mii_phy_funcs txphy_funcs = {
        !            62:        txphy_service, ukphy_status, mii_phy_reset,
        !            63: };
        !            64:
        !            65: static const struct mii_phydesc txphys[] = {
        !            66:        { MII_OUI_xxTI, MII_MODEL_xxTI_TNETE2101,
        !            67:          MII_STR_xxTI_TNETE2101 },
        !            68:
        !            69:        { 0,                    0,
        !            70:          NULL },
        !            71: };
        !            72:
        !            73: int
        !            74: txphymatch(struct device *parent, void *match, void *aux)
        !            75: {
        !            76:        struct mii_attach_args *ma = aux;
        !            77:
        !            78:        if (mii_phy_match(ma, txphys) != NULL)
        !            79:                return (10);
        !            80:
        !            81:        return (0);
        !            82: }
        !            83:
        !            84: void
        !            85: txphyattach(struct device *parent, struct device *self, void *aux)
        !            86: {
        !            87:        struct mii_softc *sc = (struct mii_softc *)self;
        !            88:        struct mii_attach_args *ma = aux;
        !            89:        struct mii_data *mii = ma->mii_data;
        !            90:        const struct mii_phydesc *mpd;
        !            91:
        !            92:        mpd = mii_phy_match(ma, txphys);
        !            93:        printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
        !            94:
        !            95:        sc->mii_inst = mii->mii_instance;
        !            96:        sc->mii_phy = ma->mii_phyno;
        !            97:        sc->mii_funcs = &txphy_funcs;
        !            98:        sc->mii_pdata = mii;
        !            99:        sc->mii_flags = ma->mii_flags;
        !           100:
        !           101:        PHY_RESET(sc);
        !           102:
        !           103:        sc->mii_capabilities =
        !           104:            PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
        !           105:        if (sc->mii_capabilities & BMSR_MEDIAMASK)
        !           106:                mii_phy_add_media(sc);
        !           107: }
        !           108:
        !           109: int
        !           110: txphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
        !           111: {
        !           112:        struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
        !           113:
        !           114:        if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
        !           115:                return (ENXIO);
        !           116:
        !           117:        /*
        !           118:         * Can't isolate the RTL8139 phy, so it has to be the only one.
        !           119:         */
        !           120:        if (IFM_INST(ife->ifm_media) != sc->mii_inst)
        !           121:                panic("txphy_service: attempt to isolate phy");
        !           122:
        !           123:        switch (cmd) {
        !           124:        case MII_POLLSTAT:
        !           125:                break;
        !           126:
        !           127:        case MII_MEDIACHG:
        !           128:                /*
        !           129:                 * If the interface is not up, don't do anything.
        !           130:                 */
        !           131:                if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
        !           132:                        break;
        !           133:
        !           134:                mii_phy_setmedia(sc);
        !           135:                break;
        !           136:
        !           137:        case MII_TICK:
        !           138:                if (mii_phy_tick(sc) == EJUSTRETURN)
        !           139:                        return (0);
        !           140:                break;
        !           141:
        !           142:        case MII_DOWN:
        !           143:                mii_phy_down(sc);
        !           144:                return (0);
        !           145:        }
        !           146:
        !           147:        /* Update the media status. */
        !           148:        mii_phy_status(sc);
        !           149:
        !           150:        /* Callback if something changed. */
        !           151:        mii_phy_update(sc, cmd);
        !           152:        return (0);
        !           153: }