1 /* $OpenBSD: exphy.c,v 1.20 2010/07/23 07:47:13 jsg 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 * 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 3Com internal PHYs 60 */ 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/kernel.h> 65 #include <sys/device.h> 66 #include <sys/socket.h> 67 68 #include <net/if.h> 69 #include <net/if_media.h> 70 71 #include <dev/mii/mii.h> 72 #include <dev/mii/miivar.h> 73 #include <dev/mii/miidevs.h> 74 75 int exphymatch(struct device *, void *, void *); 76 void exphyattach(struct device *, struct device *, void *); 77 78 struct cfattach exphy_ca = { 79 sizeof(struct mii_softc), exphymatch, exphyattach, mii_phy_detach, 80 mii_phy_activate 81 }; 82 83 struct cfdriver exphy_cd = { 84 NULL, "exphy", DV_DULL 85 }; 86 87 int exphy_service(struct mii_softc *, struct mii_data *, int); 88 void exphy_reset(struct mii_softc *); 89 90 const struct mii_phy_funcs exphy_funcs = { 91 exphy_service, ukphy_status, exphy_reset, 92 }; 93 94 int 95 exphymatch(struct device *parent, void *match, void *aux) 96 { 97 struct mii_attach_args *ma = aux; 98 99 /* 100 * Since 3com's PHY for some xl adapters is braindead and doesn't 101 * report the proper OUI/MODEL information, we have this stupid 102 * match function. 103 */ 104 if ((strcmp(parent->dv_cfdata->cf_driver->cd_name, "xl") == 0) && 105 ((MII_OUI(ma->mii_id1, ma->mii_id2) == 0 && 106 MII_MODEL(ma->mii_id2) == 0) || 107 (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_3COM && 108 MII_MODEL(ma->mii_id2) == 0))) 109 return (10); 110 111 return (0); 112 } 113 114 void 115 exphyattach(struct device *parent, struct device *self, void *aux) 116 { 117 struct mii_softc *sc = (struct mii_softc *)self; 118 struct mii_attach_args *ma = aux; 119 struct mii_data *mii = ma->mii_data; 120 121 printf(": 3Com internal media interface\n"); 122 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_funcs = &exphy_funcs; 126 sc->mii_pdata = mii; 127 sc->mii_flags = ma->mii_flags; 128 129 sc->mii_flags |= MIIF_NOISOLATE; 130 131 /* 132 * The 3Com PHY can never be isolated, so never allow non-zero 133 * instances! 134 */ 135 if (mii->mii_instance != 0) { 136 printf("%s: ignoring this PHY, non-zero instance\n", 137 sc->mii_dev.dv_xname); 138 return; 139 } 140 141 PHY_RESET(sc); 142 143 sc->mii_capabilities = 144 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 145 if (sc->mii_capabilities & BMSR_MEDIAMASK) 146 mii_phy_add_media(sc); 147 } 148 149 int 150 exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 151 { 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 154 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 155 return (ENXIO); 156 157 /* 158 * We can't isolate the 3Com PHY, so it has to be the only one! 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 161 panic("exphy_service: can't isolate 3Com PHY"); 162 163 switch (cmd) { 164 case MII_POLLSTAT: 165 break; 166 167 case MII_MEDIACHG: 168 /* 169 * If the interface is not up, don't do anything. 170 */ 171 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 172 break; 173 174 mii_phy_setmedia(sc); 175 break; 176 177 case MII_TICK: 178 if (mii_phy_tick(sc) == EJUSTRETURN) 179 return (0); 180 181 break; 182 183 case MII_DOWN: 184 mii_phy_down(sc); 185 return (0); 186 } 187 188 /* Update the media status. */ 189 mii_phy_status(sc); 190 191 /* Callback if something changed. */ 192 mii_phy_update(sc, cmd); 193 return (0); 194 } 195 196 void 197 exphy_reset(struct mii_softc *sc) 198 { 199 200 mii_phy_reset(sc); 201 202 /* 203 * XXX 3Com PHY doesn't set the BMCR properly after 204 * XXX reset, which breaks autonegotiation. 205 */ 206 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 207 } 208