1 /* $OpenBSD: ukphy.c,v 1.24 2016/07/11 09:50:02 kettenis 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 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 /* 59 * driver for generic unknown PHYs 60 */ 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/device.h> 65 #include <sys/socket.h> 66 #include <sys/errno.h> 67 68 #include <net/if.h> 69 #include <net/if_var.h> 70 #include <net/if_media.h> 71 72 #include <dev/mii/mii.h> 73 #include <dev/mii/miivar.h> 74 75 int ukphymatch(struct device *, void *, void *); 76 void ukphyattach(struct device *, struct device *, void *); 77 78 struct cfattach ukphy_ca = { 79 sizeof(struct mii_softc), ukphymatch, ukphyattach, mii_phy_detach 80 }; 81 82 struct cfdriver ukphy_cd = { 83 NULL, "ukphy", DV_DULL 84 }; 85 86 int ukphy_service(struct mii_softc *, struct mii_data *, int); 87 88 const struct mii_phy_funcs ukphy_funcs = { 89 ukphy_service, ukphy_status, mii_phy_reset, 90 }; 91 92 int 93 ukphymatch(struct device *parent, void *match, void *aux) 94 { 95 96 /* 97 * We know something is here, so always match at a low priority. 98 */ 99 return (1); 100 } 101 102 void 103 ukphyattach(struct device *parent, struct device *self, void *aux) 104 { 105 struct mii_softc *sc = (struct mii_softc *)self; 106 struct mii_attach_args *ma = aux; 107 struct mii_data *mii = ma->mii_data; 108 109 printf(": Generic IEEE 802.3u media interface, rev. %d:", 110 MII_REV(ma->mii_id2)); 111 printf(" OUI 0x%06x, model 0x%04x\n", 112 MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2)); 113 114 sc->mii_inst = mii->mii_instance; 115 sc->mii_phy = ma->mii_phyno; 116 sc->mii_funcs = &ukphy_funcs; 117 sc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2); 118 sc->mii_model = MII_MODEL(ma->mii_id2); 119 sc->mii_pdata = mii; 120 sc->mii_flags = ma->mii_flags; 121 122 /* 123 * Don't do loopback on unknown PHYs. It might confuse some of them. 124 */ 125 sc->mii_flags |= MIIF_NOLOOP; 126 127 PHY_RESET(sc); 128 129 sc->mii_capabilities = 130 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 131 if (sc->mii_capabilities & BMSR_EXTSTAT) 132 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 133 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 134 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 135 printf("%s: no media present\n", sc->mii_dev.dv_xname); 136 else 137 mii_phy_add_media(sc); 138 } 139 140 int 141 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142 { 143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 144 int reg; 145 146 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 147 return (ENXIO); 148 149 switch (cmd) { 150 case MII_POLLSTAT: 151 /* 152 * If we're not polling our PHY instance, just return. 153 */ 154 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 155 return (0); 156 break; 157 158 case MII_MEDIACHG: 159 /* 160 * If the media indicates a different PHY instance, 161 * isolate ourselves. 162 */ 163 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 164 reg = PHY_READ(sc, MII_BMCR); 165 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 166 return (0); 167 } 168 169 /* 170 * If the interface is not up, don't do anything. 171 */ 172 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 173 break; 174 175 mii_phy_setmedia(sc); 176 break; 177 178 case MII_TICK: 179 /* 180 * If we're not currently selected, just return. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 183 return (0); 184 185 if (mii_phy_tick(sc) == EJUSTRETURN) 186 return (0); 187 break; 188 189 case MII_DOWN: 190 mii_phy_down(sc); 191 return (0); 192 } 193 194 /* Update the media status. */ 195 mii_phy_status(sc); 196 197 /* Callback if something changed. */ 198 mii_phy_update(sc, cmd); 199 return (0); 200 } 201