Annotation of sys/dev/mii/mtdphy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: mtdphy.c,v 1.12 2005/02/19 06:00:04 brad Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1998, 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 Myson Technology MTD972 100BaseTX PCS/PMA.
! 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: #include <dev/mii/mtdphyreg.h>
! 47:
! 48: int mtdphymatch(struct device *, void *, void *);
! 49: void mtdphyattach(struct device *, struct device *, void *);
! 50:
! 51: struct cfattach mtdphy_ca = {
! 52: sizeof(struct mii_softc), mtdphymatch, mtdphyattach, mii_phy_detach,
! 53: mii_phy_activate
! 54: };
! 55:
! 56: struct cfdriver mtdphy_cd = {
! 57: NULL, "mtdphy", DV_DULL
! 58: };
! 59:
! 60: int mtdphy_service(struct mii_softc *, struct mii_data *, int);
! 61:
! 62: const struct mii_phy_funcs mtdphy_funcs = {
! 63: mtdphy_service, ukphy_status, mii_phy_reset,
! 64: };
! 65:
! 66: static const struct mii_phydesc mtdphys[] = {
! 67: { MII_OUI_MYSON, MII_MODEL_MYSON_MTD972,
! 68: MII_STR_MYSON_MTD972 },
! 69:
! 70: { 0, 0,
! 71: NULL },
! 72: };
! 73:
! 74: int
! 75: mtdphymatch(struct device *parent, void *match, void *aux)
! 76: {
! 77: struct mii_attach_args *ma = aux;
! 78:
! 79: if (mii_phy_match(ma, mtdphys) != NULL)
! 80: return (10);
! 81:
! 82: return (0);
! 83: }
! 84:
! 85: void
! 86: mtdphyattach(struct device *parent, struct device *self, void *aux)
! 87: {
! 88: struct mii_softc *sc = (struct mii_softc *)self;
! 89: struct mii_attach_args *ma = aux;
! 90: struct mii_data *mii = ma->mii_data;
! 91: const struct mii_phydesc *mpd;
! 92:
! 93: mpd = mii_phy_match(ma, mtdphys);
! 94: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
! 95:
! 96: sc->mii_inst = mii->mii_instance;
! 97: sc->mii_phy = ma->mii_phyno;
! 98: sc->mii_funcs = &mtdphy_funcs;
! 99: sc->mii_pdata = mii;
! 100: sc->mii_flags = ma->mii_flags;
! 101:
! 102: PHY_RESET(sc);
! 103:
! 104: sc->mii_capabilities =
! 105: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 106: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 107: mii_phy_add_media(sc);
! 108: }
! 109:
! 110: int
! 111: mtdphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
! 112: {
! 113: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 114: int reg;
! 115:
! 116: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 117: return (ENXIO);
! 118:
! 119: switch (cmd) {
! 120: case MII_POLLSTAT:
! 121: /*
! 122: * If we're not polling our PHY instance, just return.
! 123: */
! 124: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 125: return (0);
! 126: break;
! 127:
! 128: case MII_MEDIACHG:
! 129: /*
! 130: * If the interface is not up, don't do anything.
! 131: */
! 132: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
! 133: reg = PHY_READ(sc, MII_BMCR);
! 134: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
! 135: return (0);
! 136: }
! 137:
! 138: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 139: break;
! 140:
! 141: mii_phy_setmedia(sc);
! 142: break;
! 143:
! 144: case MII_TICK:
! 145: /*
! 146: *If we're not currently selected, just return.
! 147: */
! 148: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 149: return (0);
! 150:
! 151: if (mii_phy_tick(sc) == EJUSTRETURN)
! 152: return (0);
! 153: break;
! 154:
! 155: case MII_DOWN:
! 156: mii_phy_down(sc);
! 157: return (0);
! 158: }
! 159:
! 160: /* Update the media status. */
! 161: mii_phy_status(sc);
! 162:
! 163: /* Callback if something changed. */
! 164: mii_phy_update(sc, cmd);
! 165: return (0);
! 166: }
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