inphy.c revision 1.11
1 /* $NetBSD: inphy.c,v 1.11 1999/04/23 04:24:32 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. 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 96 }; 97 98 int inphy_service __P((struct mii_softc *, struct mii_data *, int)); 99 void inphy_status __P((struct mii_softc *)); 100 101 int 102 inphymatch(parent, match, aux) 103 struct device *parent; 104 struct cfdata *match; 105 void *aux; 106 { 107 struct mii_attach_args *ma = aux; 108 109 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL && 110 MII_MODEL(ma->mii_id2) == MII_MODEL_INTEL_I82555) 111 return (10); 112 113 return (0); 114 } 115 116 void 117 inphyattach(parent, self, aux) 118 struct device *parent, *self; 119 void *aux; 120 { 121 struct mii_softc *sc = (struct mii_softc *)self; 122 struct mii_attach_args *ma = aux; 123 struct mii_data *mii = ma->mii_data; 124 125 printf(": %s, rev. %d\n", MII_STR_INTEL_I82555, 126 MII_REV(ma->mii_id2)); 127 128 sc->mii_inst = mii->mii_instance; 129 sc->mii_phy = ma->mii_phyno; 130 sc->mii_service = inphy_service; 131 sc->mii_pdata = mii; 132 133 /* 134 * i82557 wedges if all of its PHYs are isolated! 135 */ 136 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "fxp") == 0 && 137 mii->mii_instance == 0) 138 sc->mii_flags |= MIIF_NOISOLATE; 139 140 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 141 142 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) 143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 144 BMCR_ISO); 145 146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 147 BMCR_LOOP|BMCR_S100); 148 149 mii_phy_reset(sc); 150 151 sc->mii_capabilities = 152 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 153 printf("%s: ", sc->mii_dev.dv_xname); 154 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 155 printf("no media present"); 156 else 157 mii_add_media(mii, sc->mii_capabilities, 158 sc->mii_inst); 159 printf("\n"); 160 #undef ADD 161 } 162 163 int 164 inphy_service(sc, mii, cmd) 165 struct mii_softc *sc; 166 struct mii_data *mii; 167 int cmd; 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 switch (cmd) { 173 case MII_POLLSTAT: 174 /* 175 * If we're not polling our PHY instance, just return. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 178 return (0); 179 break; 180 181 case MII_MEDIACHG: 182 /* 183 * If the media indicates a different PHY instance, 184 * isolate ourselves. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 187 reg = PHY_READ(sc, MII_BMCR); 188 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 189 return (0); 190 } 191 192 /* 193 * If the interface is not up, don't do anything. 194 */ 195 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 196 break; 197 198 switch (IFM_SUBTYPE(ife->ifm_media)) { 199 case IFM_AUTO: 200 /* 201 * If we're already in auto mode, just return. 202 */ 203 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 204 return (0); 205 (void) mii_phy_auto(sc, 1); 206 break; 207 case IFM_100_T4: 208 /* 209 * XXX Not supported as a manual setting right now. 210 */ 211 return (EINVAL); 212 default: 213 /* 214 * BMCR data is stored in the ifmedia entry. 215 */ 216 PHY_WRITE(sc, MII_ANAR, 217 mii_anar(ife->ifm_media)); 218 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 219 } 220 break; 221 222 case MII_TICK: 223 /* 224 * If we're not currently selected, just return. 225 */ 226 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 227 return (0); 228 229 /* 230 * Only used for autonegotiation. 231 */ 232 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 233 return (0); 234 235 /* 236 * Is the interface even up? 237 */ 238 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 239 return (0); 240 241 /* 242 * Check to see if we have link. If we do, we don't 243 * need to restart the autonegotiation process. Read 244 * the BMSR twice in case it's latched. 245 */ 246 reg = PHY_READ(sc, MII_BMSR) | 247 PHY_READ(sc, MII_BMSR); 248 if (reg & BMSR_LINK) 249 return (0); 250 251 /* 252 * Only retry autonegotiation every 5 seconds. 253 */ 254 if (++sc->mii_ticks != 5) 255 return (0); 256 257 sc->mii_ticks = 0; 258 mii_phy_reset(sc); 259 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 260 return (0); 261 break; 262 } 263 264 /* Update the media status. */ 265 inphy_status(sc); 266 267 /* Callback if something changed. */ 268 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 269 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 270 sc->mii_active = mii->mii_media_active; 271 } 272 return (0); 273 } 274 275 void 276 inphy_status(sc) 277 struct mii_softc *sc; 278 { 279 struct mii_data *mii = sc->mii_pdata; 280 int bmsr, bmcr, scr; 281 282 mii->mii_media_status = IFM_AVALID; 283 mii->mii_media_active = IFM_ETHER; 284 285 bmsr = PHY_READ(sc, MII_BMSR) | 286 PHY_READ(sc, MII_BMSR); 287 if (bmsr & BMSR_LINK) 288 mii->mii_media_status |= IFM_ACTIVE; 289 290 bmcr = PHY_READ(sc, MII_BMCR); 291 if (bmcr & BMCR_ISO) { 292 mii->mii_media_active |= IFM_NONE; 293 mii->mii_media_status = 0; 294 return; 295 } 296 297 if (bmcr & BMCR_LOOP) 298 mii->mii_media_active |= IFM_LOOP; 299 300 if (bmcr & BMCR_AUTOEN) { 301 if ((bmsr & BMSR_ACOMP) == 0) { 302 /* Erg, still trying, I guess... */ 303 mii->mii_media_active |= IFM_NONE; 304 return; 305 } 306 scr = PHY_READ(sc, MII_INPHY_SCR); 307 if (scr & SCR_T4) 308 mii->mii_media_active |= IFM_100_T4; 309 else if (scr & SCR_S100) 310 mii->mii_media_active |= IFM_100_TX; 311 else 312 mii->mii_media_active |= IFM_10_T; 313 if (scr & SCR_FDX) 314 mii->mii_media_active |= IFM_FDX; 315 } else 316 mii->mii_media_active = mii_media_from_bmcr(bmcr); 317 } 318
Indexes created Thu Sep 25 08:09:54 GMT 2025