ukphy.c revision 1.8
1 /* $NetBSD: ukphy.c,v 1.8 2000/02/02 17:50:47 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, mii_phy_detach, 92 mii_phy_activate 93 }; 94 95 int ukphy_service __P((struct mii_softc *, struct mii_data *, int)); 96 97 int 98 ukphymatch(parent, match, aux) 99 struct device *parent; 100 struct cfdata *match; 101 void *aux; 102 { 103 104 /* 105 * We know something is here, so always match at a low priority. 106 */ 107 return (1); 108 } 109 110 void 111 ukphyattach(parent, self, aux) 112 struct device *parent, *self; 113 void *aux; 114 { 115 struct mii_softc *sc = (struct mii_softc *)self; 116 struct mii_attach_args *ma = aux; 117 struct mii_data *mii = ma->mii_data; 118 119 printf(": Generic IEEE 802.3u media interface\n"); 120 printf("%s: OUI 0x%06x, model 0x%04x, rev. %d\n", 121 sc->mii_dev.dv_xname, MII_OUI(ma->mii_id1, ma->mii_id2), 122 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2)); 123 124 sc->mii_inst = mii->mii_instance; 125 sc->mii_phy = ma->mii_phyno; 126 sc->mii_service = ukphy_service; 127 sc->mii_status = ukphy_status; 128 sc->mii_pdata = mii; 129 sc->mii_flags = mii->mii_flags; 130 131 /* 132 * Don't do loopback on unknown PHYs. It might confuse some of them. 133 */ 134 sc->mii_flags |= MIIF_NOLOOP; 135 136 mii_phy_reset(sc); 137 138 sc->mii_capabilities = 139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 140 printf("%s: ", sc->mii_dev.dv_xname); 141 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 142 printf("no media present"); 143 else 144 mii_phy_add_media(sc); 145 printf("\n"); 146 } 147 148 int 149 ukphy_service(sc, mii, cmd) 150 struct mii_softc *sc; 151 struct mii_data *mii; 152 int cmd; 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 158 return (ENXIO); 159 160 switch (cmd) { 161 case MII_POLLSTAT: 162 /* 163 * If we're not polling our PHY instance, just return. 164 */ 165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 166 return (0); 167 break; 168 169 case MII_MEDIACHG: 170 /* 171 * If the media indicates a different PHY instance, 172 * isolate ourselves. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 175 reg = PHY_READ(sc, MII_BMCR); 176 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 177 return (0); 178 } 179 180 /* 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 switch (IFM_SUBTYPE(ife->ifm_media)) { 187 case IFM_AUTO: 188 /* 189 * If we're already in auto mode, just return. 190 */ 191 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 192 return (0); 193 (void) mii_phy_auto(sc, 1); 194 break; 195 default: 196 mii_phy_setmedia(sc); 197 } 198 break; 199 200 case MII_TICK: 201 /* 202 * If we're not currently selected, just return. 203 */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 205 return (0); 206 207 /* 208 * Only used for autonegotiation. 209 */ 210 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 211 return (0); 212 213 /* 214 * Is the interface even up? 215 */ 216 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 217 return (0); 218 219 /* 220 * Check to see if we have link. If we do, we don't 221 * need to restart the autonegotiation process. Read 222 * the BMSR twice in case it's latched. 223 */ 224 reg = PHY_READ(sc, MII_BMSR) | 225 PHY_READ(sc, MII_BMSR); 226 if (reg & BMSR_LINK) 227 return (0); 228 229 /* 230 * Only retry autonegotiation every 5 seconds. 231 */ 232 if (++sc->mii_ticks != 5) 233 return (0); 234 235 sc->mii_ticks = 0; 236 mii_phy_reset(sc); 237 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 238 return (0); 239 break; 240 241 case MII_DOWN: 242 mii_phy_down(sc); 243 return (0); 244 } 245 246 /* Update the media status. */ 247 mii_phy_status(sc); 248 249 /* Callback if something changed. */ 250 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 251 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 252 sc->mii_active = mii->mii_media_active; 253 } 254 return (0); 255 } 256
Indexes created Fri Sep 26 20:09:58 GMT 2025