sqphy.c revision 1.1
1 /* $NetBSD: sqphy.c,v 1.1 1998/11/03 23:51:29 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 Seeq 80220/80221 and 80223 10/100 ethernet PHYs 71 * datasheet from www.seeq.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/sqphyreg.h> 89 90 struct sqphy_softc { 91 struct mii_softc sc_mii; /* generic PHY */ 92 int sc_capabilities; 93 int sc_ticks; 94 int sc_active; 95 }; 96 97 int sqphymatch __P((struct device *, struct cfdata *, void *)); 98 void sqphyattach __P((struct device *, struct device *, void *)); 99 100 struct cfattach sqphy_ca = { 101 sizeof(struct sqphy_softc), sqphymatch, sqphyattach 102 }; 103 104 #define SQPHY_READ(sc, reg) \ 105 (*(sc)->sc_mii.mii_pdata->mii_readreg)((sc)->sc_mii.mii_dev.dv_parent, \ 106 (sc)->sc_mii.mii_phy, (reg)) 107 108 #define SQPHY_WRITE(sc, reg, val) \ 109 (*(sc)->sc_mii.mii_pdata->mii_writereg)((sc)->sc_mii.mii_dev.dv_parent, \ 110 (sc)->sc_mii.mii_phy, (reg), (val)) 111 112 int sqphy_service __P((struct mii_softc *, struct mii_data *, int)); 113 void sqphy_reset __P((struct sqphy_softc *)); 114 void sqphy_auto __P((struct sqphy_softc *)); 115 void sqphy_status __P((struct sqphy_softc *)); 116 117 int 118 sqphymatch(parent, match, aux) 119 struct device *parent; 120 struct cfdata *match; 121 void *aux; 122 { 123 struct mii_attach_args *ma = aux; 124 125 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_SEEQ && 126 MII_MODEL(ma->mii_id2) == MII_MODEL_SEEQ_80220) 127 return (1); 128 129 return (0); 130 } 131 132 void 133 sqphyattach(parent, self, aux) 134 struct device *parent, *self; 135 void *aux; 136 { 137 struct sqphy_softc *sc = (struct sqphy_softc *)self; 138 struct mii_attach_args *ma = aux; 139 struct mii_data *mii = ma->mii_data; 140 141 printf(": %s, rev. %d\n", MII_STR_SEEQ_80220, 142 MII_REV(ma->mii_id2)); 143 144 sc->sc_mii.mii_inst = mii->mii_instance; 145 sc->sc_mii.mii_phy = ma->mii_phyno; 146 sc->sc_mii.mii_service = sqphy_service; 147 sc->sc_mii.mii_pdata = mii; 148 149 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 150 151 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 152 BMCR_ISO); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->sc_mii.mii_inst), 154 BMCR_LOOP|BMCR_S100); 155 156 sqphy_reset(sc); 157 158 sc->sc_capabilities = SQPHY_READ(sc, MII_BMSR) & ma->mii_capmask; 159 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 160 if ((sc->sc_capabilities & BMSR_MEDIAMASK) == 0) 161 printf("no media present"); 162 else 163 mii_add_media(mii, sc->sc_capabilities, sc->sc_mii.mii_inst); 164 printf("\n"); 165 #undef ADD 166 } 167 168 int 169 sqphy_service(self, mii, cmd) 170 struct mii_softc *self; 171 struct mii_data *mii; 172 int cmd; 173 { 174 struct sqphy_softc *sc = (struct sqphy_softc *)self; 175 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 176 int reg; 177 178 switch (cmd) { 179 case MII_POLLSTAT: 180 /* 181 * If we're not polling our PHY instance, just return. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 184 return (0); 185 break; 186 187 case MII_MEDIACHG: 188 /* 189 * If the media indicates a different PHY instance, 190 * isolate ourselves. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 193 reg = SQPHY_READ(sc, MII_BMCR); 194 SQPHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 195 return (0); 196 } 197 198 /* 199 * If the interface is not up, don't do anything. 200 */ 201 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 202 break; 203 204 switch (IFM_SUBTYPE(ife->ifm_media)) { 205 case IFM_AUTO: 206 /* 207 * If we're already in auto mode, just return. 208 */ 209 if (SQPHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 210 return (0); 211 sqphy_auto(sc); 212 break; 213 case IFM_100_T4: 214 /* 215 * XXX Not supported as a manual setting right now. 216 */ 217 return (EINVAL); 218 default: 219 /* 220 * BMCR data is stored in the ifmedia entry. 221 */ 222 SQPHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media)); 223 SQPHY_WRITE(sc, MII_BMCR, ife->ifm_data); 224 } 225 break; 226 227 case MII_TICK: 228 /* 229 * If we're not currently selected, just return. 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 232 return (0); 233 234 /* 235 * Only used for autonegotiation. 236 */ 237 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 238 return (0); 239 240 /* 241 * Is the interface even up? 242 */ 243 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 244 return (0); 245 246 /* 247 * Check to see if we have link. If we do, we don't 248 * need to restart the autonegotiation process. Read 249 * the BMSR twice in case it's latched. 250 */ 251 reg = SQPHY_READ(sc, MII_BMSR) | SQPHY_READ(sc, MII_BMSR); 252 if (reg & BMSR_LINK) 253 return (0); 254 255 /* 256 * Only retry autonegotiation every 5 seconds. 257 */ 258 if (++sc->sc_ticks != 5) 259 return (0); 260 261 sc->sc_ticks = 0; 262 sqphy_reset(sc); 263 sqphy_auto(sc); 264 break; 265 } 266 267 /* Update the media status. */ 268 sqphy_status(sc); 269 270 /* Callback if something changed. */ 271 if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 272 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 273 sc->sc_active = mii->mii_media_active; 274 } 275 return (0); 276 } 277 278 void 279 sqphy_status(sc) 280 struct sqphy_softc *sc; 281 { 282 struct mii_data *mii = sc->sc_mii.mii_pdata; 283 int bmsr, bmcr, status; 284 285 mii->mii_media_status = IFM_AVALID; 286 mii->mii_media_active = IFM_ETHER; 287 288 bmsr = SQPHY_READ(sc, MII_BMSR) | SQPHY_READ(sc, MII_BMSR); 289 if (bmsr & BMSR_LINK) 290 mii->mii_media_status |= IFM_ACTIVE; 291 292 bmcr = SQPHY_READ(sc, MII_BMCR); 293 if (bmcr & BMCR_ISO) { 294 mii->mii_media_active |= IFM_NONE; 295 mii->mii_media_status = 0; 296 return; 297 } 298 299 if (bmcr & BMCR_LOOP) 300 mii->mii_media_active |= IFM_LOOP; 301 302 if ((bmcr & BMCR_AUTOEN) && (bmsr & BMSR_ACOMP) == 0) { 303 /* Erg, still trying, I guess... */ 304 mii->mii_media_active |= IFM_NONE; 305 return; 306 } 307 308 status = SQPHY_READ(sc, MII_SQPHY_STATUS); 309 if (status & STATUS_SPD_DET) 310 mii->mii_media_active |= IFM_100_TX; 311 else 312 mii->mii_media_active |= IFM_10_T; 313 if (status & STATUS_DPLX_DET) 314 mii->mii_media_active |= IFM_FDX; 315 } 316 317 void 318 sqphy_auto(sc) 319 struct sqphy_softc *sc; 320 { 321 int bmsr, i; 322 323 SQPHY_WRITE(sc, MII_ANAR, 324 BMSR_MEDIA_TO_ANAR(sc->sc_capabilities) | ANAR_CSMA); 325 SQPHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 326 327 /* Wait 500ms for it to complete. */ 328 for (i = 0; i < 500; i++) { 329 if ((bmsr = SQPHY_READ(sc, MII_BMSR)) & BMSR_ACOMP) 330 return; 331 delay(1000); 332 } 333 #if 0 334 if ((bmsr & BMSR_ACOMP) == 0) 335 printf("%s: autonegotiation failed to complete\n", 336 sc->sc_mii.mii_dev.dv_xname); 337 #endif 338 } 339 340 void 341 sqphy_reset(sc) 342 struct sqphy_softc *sc; 343 { 344 int reg, i; 345 346 SQPHY_WRITE(sc, MII_BMCR, BMCR_RESET|BMCR_ISO); 347 348 /* Wait 100ms for it to complete. */ 349 for (i = 0; i < 100; i++) { 350 reg = SQPHY_READ(sc, MII_BMCR); 351 if ((reg & BMCR_RESET) == 0) 352 break; 353 delay(1000); 354 } 355 356 /* Make sure the PHY is isolated. */ 357 if (sc->sc_mii.mii_inst != 0) 358 SQPHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 359 } 360
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