1 /* $NetBSD: ukphy.c,v 1.31 2007/12/09 20:28:04 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center, and by Frank van der Linden. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * driver for generic unknown PHYs 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.31 2007/12/09 20:28:04 jmcneill Exp $"); 75 76 #include "opt_mii.h" 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/device.h> 82 #include <sys/socket.h> 83 #include <sys/errno.h> 84 85 #include <net/if.h> 86 #include <net/if_media.h> 87 88 #include <dev/mii/mii.h> 89 #include <dev/mii/miivar.h> 90 91 #ifdef MIIVERBOSE 92 struct mii_knowndev { 93 int oui; 94 int model; 95 const char *descr; 96 }; 97 #include <dev/mii/miidevs.h> 98 #include <dev/mii/miidevs_data.h> 99 #endif 100 101 static int ukphymatch(struct device *, struct cfdata *, void *); 102 static void ukphyattach(struct device *, struct device *, void *); 103 104 CFATTACH_DECL(ukphy, sizeof(struct mii_softc), 105 ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate); 106 107 static int ukphy_service(struct mii_softc *, struct mii_data *, int); 108 109 static const struct mii_phy_funcs ukphy_funcs = { 110 ukphy_service, ukphy_status, mii_phy_reset, 111 }; 112 113 static int 114 ukphymatch(struct device *parent, struct cfdata *match, 115 void *aux) 116 { 117 118 /* 119 * We know something is here, so always match at a low priority. 120 */ 121 return (1); 122 } 123 124 static void 125 ukphyattach(struct device *parent, struct device *self, void *aux) 126 { 127 struct mii_softc *sc = device_private(self); 128 struct mii_attach_args *ma = aux; 129 struct mii_data *mii = ma->mii_data; 130 int oui = MII_OUI(ma->mii_id1, ma->mii_id2); 131 int model = MII_MODEL(ma->mii_id2); 132 int rev = MII_REV(ma->mii_id2); 133 #ifdef MIIVERBOSE 134 int i; 135 #endif 136 137 aprint_naive(": Media interface\n"); 138 aprint_normal(": Generic IEEE 802.3u media interface\n"); 139 #ifdef MIIVERBOSE 140 for (i = 0; mii_knowndevs[i].descr != NULL; i++) 141 if (mii_knowndevs[i].oui == oui && 142 mii_knowndevs[i].model == model) 143 break; 144 if (mii_knowndevs[i].descr != NULL) 145 aprint_normal("%s: %s (OUI 0x%06x, model 0x%04x), rev. %d\n", 146 sc->mii_dev.dv_xname, mii_knowndevs[i].descr, 147 oui, model, rev); 148 else 149 #endif 150 aprint_normal("%s: OUI 0x%06x, model 0x%04x, rev. %d\n", 151 sc->mii_dev.dv_xname, oui, model, rev); 152 153 sc->mii_inst = mii->mii_instance; 154 sc->mii_phy = ma->mii_phyno; 155 sc->mii_funcs = &ukphy_funcs; 156 sc->mii_pdata = mii; 157 sc->mii_flags = ma->mii_flags; 158 sc->mii_anegticks = MII_ANEGTICKS; 159 160 /* 161 * Don't do loopback on unknown PHYs. It might confuse some of them. 162 */ 163 sc->mii_flags |= MIIF_NOLOOP; 164 165 PHY_RESET(sc); 166 167 sc->mii_capabilities = 168 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 169 if (sc->mii_capabilities & BMSR_EXTSTAT) 170 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 171 aprint_normal("%s: ", sc->mii_dev.dv_xname); 172 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 173 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 174 aprint_error("no media present"); 175 else 176 mii_phy_add_media(sc); 177 aprint_normal("\n"); 178 179 if (!pmf_device_register(self, NULL, mii_phy_resume)) 180 aprint_error_dev(self, "couldn't establish power handler\n"); 181 } 182 183 static int 184 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 185 { 186 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 187 int reg; 188 189 if (!device_is_active(&sc->mii_dev)) 190 return (ENXIO); 191 192 switch (cmd) { 193 case MII_POLLSTAT: 194 /* 195 * If we're not polling our PHY instance, just return. 196 */ 197 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 198 return (0); 199 break; 200 201 case MII_MEDIACHG: 202 /* 203 * If the media indicates a different PHY instance, 204 * isolate ourselves. 205 */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 207 reg = PHY_READ(sc, MII_BMCR); 208 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 209 return (0); 210 } 211 212 /* 213 * If the interface is not up, don't do anything. 214 */ 215 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 216 break; 217 218 mii_phy_setmedia(sc); 219 break; 220 221 case MII_TICK: 222 /* 223 * If we're not currently selected, just return. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 226 return (0); 227 228 /* 229 * Only used for autonegotiation. 230 */ 231 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 232 return (0); 233 234 if (mii_phy_tick(sc) == EJUSTRETURN) 235 return (0); 236 break; 237 238 case MII_DOWN: 239 mii_phy_down(sc); 240 return (0); 241 } 242 243 /* Update the media status. */ 244 mii_phy_status(sc); 245 246 /* Callback if something changed. */ 247 mii_phy_update(sc, cmd); 248 return (0); 249 } 250