inphy.c revision 1.14
1 /* $NetBSD: inphy.c,v 1.14 2000/01/27 16:44:30 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. 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 Intel's i82555 ethernet 10/100 PHY 71 * Data Sheet available from www.intel.com 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/device.h> 78 #include <sys/malloc.h> 79 #include <sys/socket.h> 80 #include <sys/errno.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <dev/mii/mii.h> 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/miidevs.h> 88 89 #include <dev/mii/inphyreg.h> 90 91 int inphymatch __P((struct device *, struct cfdata *, void *)); 92 void inphyattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach inphy_ca = { 95 sizeof(struct mii_softc), inphymatch, inphyattach, mii_detach, 96 mii_activate 97 }; 98 99 int inphy_service __P((struct mii_softc *, struct mii_data *, int)); 100 void inphy_status __P((struct mii_softc *)); 101 102 int 103 inphymatch(parent, match, aux) 104 struct device *parent; 105 struct cfdata *match; 106 void *aux; 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL && 111 MII_MODEL(ma->mii_id2) == MII_MODEL_INTEL_I82555) 112 return (10); 113 114 return (0); 115 } 116 117 void 118 inphyattach(parent, self, aux) 119 struct device *parent, *self; 120 void *aux; 121 { 122 struct mii_softc *sc = (struct mii_softc *)self; 123 struct mii_attach_args *ma = aux; 124 struct mii_data *mii = ma->mii_data; 125 126 printf(": %s, rev. %d\n", MII_STR_INTEL_I82555, 127 MII_REV(ma->mii_id2)); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_service = inphy_service; 132 sc->mii_pdata = mii; 133 134 /* 135 * i82557 wedges if all of its PHYs are isolated! 136 */ 137 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "fxp") == 0 && 138 mii->mii_instance == 0) 139 sc->mii_flags |= MIIF_NOISOLATE; 140 141 mii_phy_reset(sc); 142 143 sc->mii_capabilities = 144 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 145 printf("%s: ", sc->mii_dev.dv_xname); 146 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 147 printf("no media present"); 148 else 149 mii_add_media(sc); 150 printf("\n"); 151 } 152 153 int 154 inphy_service(sc, mii, cmd) 155 struct mii_softc *sc; 156 struct mii_data *mii; 157 int cmd; 158 { 159 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 160 int reg; 161 162 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 163 return (ENXIO); 164 165 switch (cmd) { 166 case MII_POLLSTAT: 167 /* 168 * If we're not polling our PHY instance, just return. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 171 return (0); 172 break; 173 174 case MII_MEDIACHG: 175 /* 176 * If the media indicates a different PHY instance, 177 * isolate ourselves. 178 */ 179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 180 reg = PHY_READ(sc, MII_BMCR); 181 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 182 return (0); 183 } 184 185 /* 186 * If the interface is not up, don't do anything. 187 */ 188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 189 break; 190 191 switch (IFM_SUBTYPE(ife->ifm_media)) { 192 case IFM_AUTO: 193 /* 194 * If we're already in auto mode, just return. 195 */ 196 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 197 return (0); 198 (void) mii_phy_auto(sc, 1); 199 break; 200 default: 201 mii_phy_setmedia(sc); 202 } 203 break; 204 205 case MII_TICK: 206 /* 207 * If we're not currently selected, just return. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 210 return (0); 211 212 /* 213 * Only used for autonegotiation. 214 */ 215 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 216 return (0); 217 218 /* 219 * Is the interface even up? 220 */ 221 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 222 return (0); 223 224 /* 225 * Check to see if we have link. If we do, we don't 226 * need to restart the autonegotiation process. Read 227 * the BMSR twice in case it's latched. 228 */ 229 reg = PHY_READ(sc, MII_BMSR) | 230 PHY_READ(sc, MII_BMSR); 231 if (reg & BMSR_LINK) 232 return (0); 233 234 /* 235 * Only retry autonegotiation every 5 seconds. 236 */ 237 if (++sc->mii_ticks != 5) 238 return (0); 239 240 sc->mii_ticks = 0; 241 mii_phy_reset(sc); 242 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 243 return (0); 244 break; 245 246 case MII_DOWN: 247 mii_phy_down(sc); 248 return (0); 249 } 250 251 /* Update the media status. */ 252 inphy_status(sc); 253 254 /* Callback if something changed. */ 255 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 256 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 257 sc->mii_active = mii->mii_media_active; 258 } 259 return (0); 260 } 261 262 void 263 inphy_status(sc) 264 struct mii_softc *sc; 265 { 266 struct mii_data *mii = sc->mii_pdata; 267 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 268 int bmsr, bmcr, scr; 269 270 mii->mii_media_status = IFM_AVALID; 271 mii->mii_media_active = IFM_ETHER; 272 273 bmsr = PHY_READ(sc, MII_BMSR) | 274 PHY_READ(sc, MII_BMSR); 275 if (bmsr & BMSR_LINK) 276 mii->mii_media_status |= IFM_ACTIVE; 277 278 bmcr = PHY_READ(sc, MII_BMCR); 279 if (bmcr & BMCR_ISO) { 280 mii->mii_media_active |= IFM_NONE; 281 mii->mii_media_status = 0; 282 return; 283 } 284 285 if (bmcr & BMCR_LOOP) 286 mii->mii_media_active |= IFM_LOOP; 287 288 if (bmcr & BMCR_AUTOEN) { 289 if ((bmsr & BMSR_ACOMP) == 0) { 290 /* Erg, still trying, I guess... */ 291 mii->mii_media_active |= IFM_NONE; 292 return; 293 } 294 scr = PHY_READ(sc, MII_INPHY_SCR); 295 if (scr & SCR_T4) 296 mii->mii_media_active |= IFM_100_T4; 297 else if (scr & SCR_S100) 298 mii->mii_media_active |= IFM_100_TX; 299 else 300 mii->mii_media_active |= IFM_10_T; 301 if (scr & SCR_FDX) 302 mii->mii_media_active |= IFM_FDX; 303 } else 304 mii->mii_media_active = ife->ifm_media; 305 } 306
Indexes created Tue Sep 23 07:09:52 GMT 2025