Annotation of sys/dev/mii/exphy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: exphy.c,v 1.18 2005/02/04 23:23:56 brad Exp $ */
! 2: /* $NetBSD: exphy.c,v 1.23 2000/02/02 23:34:56 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 3Com internal 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:
! 80: #include <net/if.h>
! 81: #include <net/if_media.h>
! 82:
! 83: #include <dev/mii/mii.h>
! 84: #include <dev/mii/miivar.h>
! 85: #include <dev/mii/miidevs.h>
! 86:
! 87: int exphymatch(struct device *, void *, void *);
! 88: void exphyattach(struct device *, struct device *, void *);
! 89:
! 90: struct cfattach exphy_ca = {
! 91: sizeof(struct mii_softc), exphymatch, exphyattach, mii_phy_detach,
! 92: mii_phy_activate
! 93: };
! 94:
! 95: struct cfdriver exphy_cd = {
! 96: NULL, "exphy", DV_DULL
! 97: };
! 98:
! 99: int exphy_service(struct mii_softc *, struct mii_data *, int);
! 100: void exphy_reset(struct mii_softc *);
! 101:
! 102: const struct mii_phy_funcs exphy_funcs = {
! 103: exphy_service, ukphy_status, exphy_reset,
! 104: };
! 105:
! 106: int
! 107: exphymatch(struct device *parent, void *match, void *aux)
! 108: {
! 109: struct mii_attach_args *ma = aux;
! 110:
! 111: /*
! 112: * Since 3com's PHY for some xl adapters is braindead and doesn't
! 113: * report the proper OUI/MODEL information, we have this stupid
! 114: * match function.
! 115: */
! 116: if ((strcmp(parent->dv_cfdata->cf_driver->cd_name, "xl") == 0) &&
! 117: ((MII_OUI(ma->mii_id1, ma->mii_id2) == 0 &&
! 118: MII_MODEL(ma->mii_id2) == 0) ||
! 119: (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_3COM &&
! 120: MII_MODEL(ma->mii_id2) == 0)))
! 121: return (10);
! 122:
! 123: return (0);
! 124: }
! 125:
! 126: void
! 127: exphyattach(struct device *parent, struct device *self, void *aux)
! 128: {
! 129: struct mii_softc *sc = (struct mii_softc *)self;
! 130: struct mii_attach_args *ma = aux;
! 131: struct mii_data *mii = ma->mii_data;
! 132:
! 133: printf(": 3Com internal media interface\n");
! 134:
! 135: sc->mii_inst = mii->mii_instance;
! 136: sc->mii_phy = ma->mii_phyno;
! 137: sc->mii_funcs = &exphy_funcs;
! 138: sc->mii_pdata = mii;
! 139: sc->mii_flags = ma->mii_flags;
! 140:
! 141: sc->mii_flags |= MIIF_NOISOLATE;
! 142:
! 143: /*
! 144: * The 3Com PHY can never be isolated, so never allow non-zero
! 145: * instances!
! 146: */
! 147: if (mii->mii_instance != 0) {
! 148: printf("%s: ignoring this PHY, non-zero instance\n",
! 149: sc->mii_dev.dv_xname);
! 150: return;
! 151: }
! 152:
! 153: PHY_RESET(sc);
! 154:
! 155: sc->mii_capabilities =
! 156: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 157: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 158: mii_phy_add_media(sc);
! 159: }
! 160:
! 161: int
! 162: exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
! 163: {
! 164: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 165:
! 166: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 167: return (ENXIO);
! 168:
! 169: /*
! 170: * We can't isolate the 3Com PHY, so it has to be the only one!
! 171: */
! 172: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 173: panic("exphy_service: can't isolate 3Com PHY");
! 174:
! 175: switch (cmd) {
! 176: case MII_POLLSTAT:
! 177: break;
! 178:
! 179: case MII_MEDIACHG:
! 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: if (mii_phy_tick(sc) == EJUSTRETURN)
! 191: return (0);
! 192:
! 193: break;
! 194:
! 195: case MII_DOWN:
! 196: mii_phy_down(sc);
! 197: return (0);
! 198: }
! 199:
! 200: /* Update the media status. */
! 201: mii_phy_status(sc);
! 202:
! 203: /* Callback if something changed. */
! 204: mii_phy_update(sc, cmd);
! 205: return (0);
! 206: }
! 207:
! 208: void
! 209: exphy_reset(struct mii_softc *sc)
! 210: {
! 211:
! 212: mii_phy_reset(sc);
! 213:
! 214: /*
! 215: * XXX 3Com PHY doesn't set the BMCR properly after
! 216: * XXX reset, which breaks autonegotiation.
! 217: */
! 218: PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
! 219: }
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