inphy.c revision 1.6
1 /* $NetBSD: inphy.c,v 1.6 1998/11/04 23:07:15 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 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 #include <dev/mii/miidevs.h> 87 88 #include <dev/mii/inphyreg.h> 89 90 struct inphy_softc { 91 struct mii_softc sc_mii; /* generic PHY */ 92 int sc_ticks; 93 int sc_active; 94 }; 95 96 int inphymatch __P((struct device *, struct cfdata *, void *)); 97 void inphyattach __P((struct device *, struct device *, void *)); 98 99 struct cfattach inphy_ca = { 100 sizeof(struct inphy_softc), inphymatch, inphyattach 101 }; 102 103 int inphy_service __P((struct mii_softc *, struct mii_data *, int)); 104 void inphy_reset __P((struct inphy_softc *)); 105 void inphy_status __P((struct inphy_softc *)); 106 107 int 108 inphymatch(parent, match, aux) 109 struct device *parent; 110 struct cfdata *match; 111 void *aux; 112 { 113 struct mii_attach_args *ma = aux; 114 115 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL && 116 MII_MODEL(ma->mii_id2) == MII_MODEL_INTEL_I82555) 117 return (1); 118 119 return (0); 120 } 121 122 void 123 inphyattach(parent, self, aux) 124 struct device *parent, *self; 125 void *aux; 126 { 127 struct inphy_softc *sc = (struct inphy_softc *)self; 128 struct mii_attach_args *ma = aux; 129 struct mii_data *mii = ma->mii_data; 130 131 printf(": %s, rev. %d\n", MII_STR_INTEL_I82555, 132 MII_REV(ma->mii_id2)); 133 134 sc->sc_mii.mii_inst = mii->mii_instance; 135 sc->sc_mii.mii_phy = ma->mii_phyno; 136 sc->sc_mii.mii_service = inphy_service; 137 sc->sc_mii.mii_pdata = mii; 138 139 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 140 141 #if 0 142 /* Can't do this on the i82557! */ 143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 144 BMCR_ISO); 145 #endif 146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->sc_mii.mii_inst), 147 BMCR_LOOP|BMCR_S100); 148 149 inphy_reset(sc); 150 151 sc->sc_mii.mii_capabilities = 152 PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 153 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 154 if ((sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) == 0) 155 printf("no media present"); 156 else 157 mii_add_media(mii, sc->sc_mii.mii_capabilities, 158 sc->sc_mii.mii_inst); 159 printf("\n"); 160 #undef ADD 161 } 162 163 int 164 inphy_service(self, mii, cmd) 165 struct mii_softc *self; 166 struct mii_data *mii; 167 int cmd; 168 { 169 struct inphy_softc *sc = (struct inphy_softc *)self; 170 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 171 int reg; 172 173 switch (cmd) { 174 case MII_POLLSTAT: 175 /* 176 * If we're not polling our PHY instance, just return. 177 */ 178 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 179 return (0); 180 break; 181 182 case MII_MEDIACHG: 183 /* 184 * If the media indicates a different PHY instance, 185 * isolate ourselves. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 188 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 189 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 190 return (0); 191 } 192 193 /* 194 * If the interface is not up, don't do anything. 195 */ 196 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 197 break; 198 199 switch (IFM_SUBTYPE(ife->ifm_media)) { 200 case IFM_AUTO: 201 /* 202 * If we're already in auto mode, just return. 203 */ 204 if (PHY_READ(&sc->sc_mii, MII_BMCR) & BMCR_AUTOEN) 205 return (0); 206 (void) mii_phy_auto(&sc->sc_mii); 207 break; 208 case IFM_100_T4: 209 /* 210 * XXX Not supported as a manual setting right now. 211 */ 212 return (EINVAL); 213 default: 214 /* 215 * BMCR data is stored in the ifmedia entry. 216 */ 217 PHY_WRITE(&sc->sc_mii, MII_ANAR, 218 mii_anar(ife->ifm_media)); 219 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 220 } 221 break; 222 223 case MII_TICK: 224 /* 225 * If we're not currently selected, just return. 226 */ 227 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 228 return (0); 229 230 /* 231 * Only used for autonegotiation. 232 */ 233 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 234 return (0); 235 236 /* 237 * Is the interface even up? 238 */ 239 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 240 return (0); 241 242 /* 243 * Check to see if we have link. If we do, we don't 244 * need to restart the autonegotiation process. Read 245 * the BMSR twice in case it's latched. 246 */ 247 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 248 PHY_READ(&sc->sc_mii, MII_BMSR); 249 if (reg & BMSR_LINK) 250 return (0); 251 252 /* 253 * Only retry autonegotiation every 5 seconds. 254 */ 255 if (++sc->sc_ticks != 5) 256 return (0); 257 258 sc->sc_ticks = 0; 259 inphy_reset(sc); 260 (void) mii_phy_auto(&sc->sc_mii); 261 break; 262 } 263 264 /* Update the media status. */ 265 inphy_status(sc); 266 267 /* Callback if something changed. */ 268 if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 269 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 270 sc->sc_active = mii->mii_media_active; 271 } 272 return (0); 273 } 274 275 void 276 inphy_status(sc) 277 struct inphy_softc *sc; 278 { 279 struct mii_data *mii = sc->sc_mii.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->sc_mii, MII_BMSR) | 286 PHY_READ(&sc->sc_mii, MII_BMSR); 287 if (bmsr & BMSR_LINK) 288 mii->mii_media_status |= IFM_ACTIVE; 289 290 bmcr = PHY_READ(&sc->sc_mii, 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->sc_mii, 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 if (bmcr & BMCR_S100) 317 mii->mii_media_active |= IFM_100_TX; 318 else 319 mii->mii_media_active |= IFM_10_T; 320 if (bmcr & BMCR_FDX) 321 mii->mii_media_active |= IFM_FDX; 322 } 323 } 324 325 void 326 inphy_reset(sc) 327 struct inphy_softc *sc; 328 { 329 int reg, i; 330 331 /* 332 * The i82557 wedges if we isolate all of its PHYs! 333 */ 334 if (sc->sc_mii.mii_inst == 0) 335 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_RESET); 336 else 337 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_RESET|BMCR_ISO); 338 339 /* Wait 100ms for it to complete. */ 340 for (i = 0; i < 100; i++) { 341 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 342 if ((reg & BMCR_RESET) == 0) 343 break; 344 delay(1000); 345 } 346 347 /* Make sure the PHY is isolated. */ 348 if (sc->sc_mii.mii_inst != 0) 349 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 350 } 351
Indexes created Thu Sep 25 02:09:54 GMT 2025