Annotation of sys/dev/mii/ukphy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ukphy.c,v 1.18 2006/03/05 01:11:37 brad Exp $ */
! 2: /* $NetBSD: ukphy.c,v 1.9 2000/02/02 23:34:57 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center, and by Frank van der Linden.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
! 43: *
! 44: * Redistribution and use in source and binary forms, with or without
! 45: * modification, are permitted provided that the following conditions
! 46: * are met:
! 47: * 1. Redistributions of source code must retain the above copyright
! 48: * notice, this list of conditions and the following disclaimer.
! 49: * 2. Redistributions in binary form must reproduce the above copyright
! 50: * notice, this list of conditions and the following disclaimer in the
! 51: * documentation and/or other materials provided with the distribution.
! 52: * 3. All advertising materials mentioning features or use of this software
! 53: * must display the following acknowledgement:
! 54: * This product includes software developed by Manuel Bouyer.
! 55: * 4. The name of the author may not be used to endorse or promote products
! 56: * derived from this software without specific prior written permission.
! 57: *
! 58: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 59: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 60: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 61: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 62: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 63: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 64: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 65: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 66: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 67: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 68: */
! 69:
! 70: /*
! 71: * driver for generic unknown PHYs
! 72: */
! 73:
! 74: #include <sys/param.h>
! 75: #include <sys/systm.h>
! 76: #include <sys/kernel.h>
! 77: #include <sys/device.h>
! 78: #include <sys/socket.h>
! 79: #include <sys/errno.h>
! 80:
! 81: #include <net/if.h>
! 82: #include <net/if_media.h>
! 83:
! 84: #include <dev/mii/mii.h>
! 85: #include <dev/mii/miivar.h>
! 86:
! 87: int ukphymatch(struct device *, void *, void *);
! 88: void ukphyattach(struct device *, struct device *, void *);
! 89:
! 90: struct cfattach ukphy_ca = {
! 91: sizeof(struct mii_softc), ukphymatch, ukphyattach, mii_phy_detach,
! 92: mii_phy_activate
! 93: };
! 94:
! 95: struct cfdriver ukphy_cd = {
! 96: NULL, "ukphy", DV_DULL
! 97: };
! 98:
! 99: int ukphy_service(struct mii_softc *, struct mii_data *, int);
! 100:
! 101: const struct mii_phy_funcs ukphy_funcs = {
! 102: ukphy_service, ukphy_status, mii_phy_reset,
! 103: };
! 104:
! 105: int
! 106: ukphymatch(struct device *parent, void *match, void *aux)
! 107: {
! 108:
! 109: /*
! 110: * We know something is here, so always match at a low priority.
! 111: */
! 112: return (1);
! 113: }
! 114:
! 115: void
! 116: ukphyattach(struct device *parent, struct device *self, void *aux)
! 117: {
! 118: struct mii_softc *sc = (struct mii_softc *)self;
! 119: struct mii_attach_args *ma = aux;
! 120: struct mii_data *mii = ma->mii_data;
! 121:
! 122: printf(": Generic IEEE 802.3u media interface, rev. %d:",
! 123: MII_REV(ma->mii_id2));
! 124: printf(" OUI 0x%06x, model 0x%04x\n",
! 125: MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2));
! 126:
! 127: sc->mii_inst = mii->mii_instance;
! 128: sc->mii_phy = ma->mii_phyno;
! 129: sc->mii_funcs = &ukphy_funcs;
! 130: sc->mii_pdata = mii;
! 131: sc->mii_flags = ma->mii_flags;
! 132:
! 133: /*
! 134: * Don't do loopback on unknown PHYs. It might confuse some of them.
! 135: */
! 136: sc->mii_flags |= MIIF_NOLOOP;
! 137:
! 138: PHY_RESET(sc);
! 139:
! 140: sc->mii_capabilities =
! 141: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 142: if (sc->mii_capabilities & BMSR_EXTSTAT)
! 143: sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
! 144: if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
! 145: (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
! 146: printf("%s: no media present\n", sc->mii_dev.dv_xname);
! 147: else
! 148: mii_phy_add_media(sc);
! 149: }
! 150:
! 151: int
! 152: ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
! 153: {
! 154: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 155: int reg;
! 156:
! 157: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 158: return (ENXIO);
! 159:
! 160: switch (cmd) {
! 161: case MII_POLLSTAT:
! 162: /*
! 163: * If we're not polling our PHY instance, just return.
! 164: */
! 165: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 166: return (0);
! 167: break;
! 168:
! 169: case MII_MEDIACHG:
! 170: /*
! 171: * If the media indicates a different PHY instance,
! 172: * isolate ourselves.
! 173: */
! 174: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
! 175: reg = PHY_READ(sc, MII_BMCR);
! 176: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
! 177: return (0);
! 178: }
! 179:
! 180: /*
! 181: * If the interface is not up, don't do anything.
! 182: */
! 183: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 184: break;
! 185:
! 186: mii_phy_setmedia(sc);
! 187: break;
! 188:
! 189: case MII_TICK:
! 190: /*
! 191: * If we're not currently selected, just return.
! 192: */
! 193: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 194: return (0);
! 195:
! 196: if (mii_phy_tick(sc) == EJUSTRETURN)
! 197: return (0);
! 198: break;
! 199:
! 200: case MII_DOWN:
! 201: mii_phy_down(sc);
! 202: return (0);
! 203: }
! 204:
! 205: /* Update the media status. */
! 206: mii_phy_status(sc);
! 207:
! 208: /* Callback if something changed. */
! 209: mii_phy_update(sc, cmd);
! 210: return (0);
! 211: }
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