ukphy.c revision 1.3
1 /* $NetBSD: ukphy.c,v 1.3 1999/11/03 22:30:32 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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/param.h> 74 #include <sys/systm.h> 75 #include <sys/kernel.h> 76 #include <sys/device.h> 77 #include <sys/malloc.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 __P((struct device *, struct cfdata *, void *)); 88 void ukphyattach __P((struct device *, struct device *, void *)); 89 90 struct cfattach ukphy_ca = { 91 sizeof(struct mii_softc), ukphymatch, ukphyattach 92 }; 93 94 int ukphy_service __P((struct mii_softc *, struct mii_data *, int)); 95 96 int 97 ukphymatch(parent, match, aux) 98 struct device *parent; 99 struct cfdata *match; 100 void *aux; 101 { 102 103 /* 104 * We know something is here, so always match at a low priority. 105 */ 106 return (1); 107 } 108 109 void 110 ukphyattach(parent, self, aux) 111 struct device *parent, *self; 112 void *aux; 113 { 114 struct mii_softc *sc = (struct mii_softc *)self; 115 struct mii_attach_args *ma = aux; 116 struct mii_data *mii = ma->mii_data; 117 118 printf(": Generic IEEE 802.3u media interface\n"); 119 printf("%s: OUI 0x%06x, model 0x%04x, rev. %d\n", 120 sc->mii_dev.dv_xname, MII_OUI(ma->mii_id1, ma->mii_id2), 121 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 122 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_service = ukphy_service; 126 sc->mii_pdata = mii; 127 128 /* 129 * Don't do loopback on unknown PHYs. It might confuse some of them. 130 */ 131 sc->mii_flags |= MIIF_NOLOOP; 132 133 mii_phy_reset(sc); 134 135 sc->mii_capabilities = 136 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 137 printf("%s: ", sc->mii_dev.dv_xname); 138 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 139 printf("no media present"); 140 else 141 mii_add_media(sc); 142 printf("\n"); 143 } 144 145 int 146 ukphy_service(sc, mii, cmd) 147 struct mii_softc *sc; 148 struct mii_data *mii; 149 int cmd; 150 { 151 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 152 int reg; 153 154 switch (cmd) { 155 case MII_POLLSTAT: 156 /* 157 * If we're not polling our PHY instance, just return. 158 */ 159 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 160 return (0); 161 break; 162 163 case MII_MEDIACHG: 164 /* 165 * If the media indicates a different PHY instance, 166 * isolate ourselves. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 169 reg = PHY_READ(sc, MII_BMCR); 170 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 171 return (0); 172 } 173 174 /* 175 * If the interface is not up, don't do anything. 176 */ 177 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 178 break; 179 180 switch (IFM_SUBTYPE(ife->ifm_media)) { 181 case IFM_AUTO: 182 /* 183 * If we're already in auto mode, just return. 184 */ 185 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 186 return (0); 187 (void) mii_phy_auto(sc, 1); 188 break; 189 default: 190 mii_phy_setmedia(sc); 191 } 192 break; 193 194 case MII_TICK: 195 /* 196 * If we're not currently selected, just return. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 199 return (0); 200 201 /* 202 * Only used for autonegotiation. 203 */ 204 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 205 return (0); 206 207 /* 208 * Is the interface even up? 209 */ 210 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 211 return (0); 212 213 /* 214 * Check to see if we have link. If we do, we don't 215 * need to restart the autonegotiation process. Read 216 * the BMSR twice in case it's latched. 217 */ 218 reg = PHY_READ(sc, MII_BMSR) | 219 PHY_READ(sc, MII_BMSR); 220 if (reg & BMSR_LINK) 221 return (0); 222 223 /* 224 * Only retry autonegotiation every 5 seconds. 225 */ 226 if (++sc->mii_ticks != 5) 227 return (0); 228 229 sc->mii_ticks = 0; 230 mii_phy_reset(sc); 231 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 232 return (0); 233 break; 234 } 235 236 /* Update the media status. */ 237 ukphy_status(sc); 238 239 /* Callback if something changed. */ 240 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 241 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 242 sc->mii_active = mii->mii_media_active; 243 } 244 return (0); 245 } 246
Indexes created Fri Sep 26 20:09:58 GMT 2025