sqphy.c revision 1.2
1 /* $NetBSD: sqphy.c,v 1.2 1998/11/04 22:15:41 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 int sqphy_service __P((struct mii_softc *, struct mii_data *, int)); 105 void sqphy_reset __P((struct sqphy_softc *)); 106 void sqphy_auto __P((struct sqphy_softc *)); 107 void sqphy_status __P((struct sqphy_softc *)); 108 109 int 110 sqphymatch(parent, match, aux) 111 struct device *parent; 112 struct cfdata *match; 113 void *aux; 114 { 115 struct mii_attach_args *ma = aux; 116 117 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_SEEQ && 118 MII_MODEL(ma->mii_id2) == MII_MODEL_SEEQ_80220) 119 return (1); 120 121 return (0); 122 } 123 124 void 125 sqphyattach(parent, self, aux) 126 struct device *parent, *self; 127 void *aux; 128 { 129 struct sqphy_softc *sc = (struct sqphy_softc *)self; 130 struct mii_attach_args *ma = aux; 131 struct mii_data *mii = ma->mii_data; 132 133 printf(": %s, rev. %d\n", MII_STR_SEEQ_80220, 134 MII_REV(ma->mii_id2)); 135 136 sc->sc_mii.mii_inst = mii->mii_instance; 137 sc->sc_mii.mii_phy = ma->mii_phyno; 138 sc->sc_mii.mii_service = sqphy_service; 139 sc->sc_mii.mii_pdata = mii; 140 141 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 142 143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 144 BMCR_ISO); 145 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->sc_mii.mii_inst), 146 BMCR_LOOP|BMCR_S100); 147 148 sqphy_reset(sc); 149 150 sc->sc_capabilities = PHY_READ(&sc->sc_mii, MII_BMSR) & ma->mii_capmask; 151 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 152 if ((sc->sc_capabilities & BMSR_MEDIAMASK) == 0) 153 printf("no media present"); 154 else 155 mii_add_media(mii, sc->sc_capabilities, sc->sc_mii.mii_inst); 156 printf("\n"); 157 #undef ADD 158 } 159 160 int 161 sqphy_service(self, mii, cmd) 162 struct mii_softc *self; 163 struct mii_data *mii; 164 int cmd; 165 { 166 struct sqphy_softc *sc = (struct sqphy_softc *)self; 167 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 168 int reg; 169 170 switch (cmd) { 171 case MII_POLLSTAT: 172 /* 173 * If we're not polling our PHY instance, just return. 174 */ 175 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 176 return (0); 177 break; 178 179 case MII_MEDIACHG: 180 /* 181 * If the media indicates a different PHY instance, 182 * isolate ourselves. 183 */ 184 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) { 185 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 186 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 187 return (0); 188 } 189 190 /* 191 * If the interface is not up, don't do anything. 192 */ 193 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 194 break; 195 196 switch (IFM_SUBTYPE(ife->ifm_media)) { 197 case IFM_AUTO: 198 /* 199 * If we're already in auto mode, just return. 200 */ 201 if (PHY_READ(&sc->sc_mii, MII_BMCR) & BMCR_AUTOEN) 202 return (0); 203 sqphy_auto(sc); 204 break; 205 case IFM_100_T4: 206 /* 207 * XXX Not supported as a manual setting right now. 208 */ 209 return (EINVAL); 210 default: 211 /* 212 * BMCR data is stored in the ifmedia entry. 213 */ 214 PHY_WRITE(&sc->sc_mii, MII_ANAR, 215 mii_anar(ife->ifm_media)); 216 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data); 217 } 218 break; 219 220 case MII_TICK: 221 /* 222 * If we're not currently selected, just return. 223 */ 224 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) 225 return (0); 226 227 /* 228 * Only used for autonegotiation. 229 */ 230 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 231 return (0); 232 233 /* 234 * Is the interface even up? 235 */ 236 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 237 return (0); 238 239 /* 240 * Check to see if we have link. If we do, we don't 241 * need to restart the autonegotiation process. Read 242 * the BMSR twice in case it's latched. 243 */ 244 reg = PHY_READ(&sc->sc_mii, MII_BMSR) | 245 PHY_READ(&sc->sc_mii, MII_BMSR); 246 if (reg & BMSR_LINK) 247 return (0); 248 249 /* 250 * Only retry autonegotiation every 5 seconds. 251 */ 252 if (++sc->sc_ticks != 5) 253 return (0); 254 255 sc->sc_ticks = 0; 256 sqphy_reset(sc); 257 sqphy_auto(sc); 258 break; 259 } 260 261 /* Update the media status. */ 262 sqphy_status(sc); 263 264 /* Callback if something changed. */ 265 if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 266 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 267 sc->sc_active = mii->mii_media_active; 268 } 269 return (0); 270 } 271 272 void 273 sqphy_status(sc) 274 struct sqphy_softc *sc; 275 { 276 struct mii_data *mii = sc->sc_mii.mii_pdata; 277 int bmsr, bmcr, status; 278 279 mii->mii_media_status = IFM_AVALID; 280 mii->mii_media_active = IFM_ETHER; 281 282 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) | 283 PHY_READ(&sc->sc_mii, MII_BMSR); 284 if (bmsr & BMSR_LINK) 285 mii->mii_media_status |= IFM_ACTIVE; 286 287 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR); 288 if (bmcr & BMCR_ISO) { 289 mii->mii_media_active |= IFM_NONE; 290 mii->mii_media_status = 0; 291 return; 292 } 293 294 if (bmcr & BMCR_LOOP) 295 mii->mii_media_active |= IFM_LOOP; 296 297 if ((bmcr & BMCR_AUTOEN) && (bmsr & BMSR_ACOMP) == 0) { 298 /* Erg, still trying, I guess... */ 299 mii->mii_media_active |= IFM_NONE; 300 return; 301 } 302 303 status = PHY_READ(&sc->sc_mii, MII_SQPHY_STATUS); 304 if (status & STATUS_SPD_DET) 305 mii->mii_media_active |= IFM_100_TX; 306 else 307 mii->mii_media_active |= IFM_10_T; 308 if (status & STATUS_DPLX_DET) 309 mii->mii_media_active |= IFM_FDX; 310 } 311 312 void 313 sqphy_auto(sc) 314 struct sqphy_softc *sc; 315 { 316 int bmsr, i; 317 318 PHY_WRITE(&sc->sc_mii, MII_ANAR, 319 BMSR_MEDIA_TO_ANAR(sc->sc_capabilities) | ANAR_CSMA); 320 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 321 322 /* Wait 500ms for it to complete. */ 323 for (i = 0; i < 500; i++) { 324 if ((bmsr = PHY_READ(&sc->sc_mii, MII_BMSR)) & BMSR_ACOMP) 325 return; 326 delay(1000); 327 } 328 #if 0 329 if ((bmsr & BMSR_ACOMP) == 0) 330 printf("%s: autonegotiation failed to complete\n", 331 sc->sc_mii.mii_dev.dv_xname); 332 #endif 333 } 334 335 void 336 sqphy_reset(sc) 337 struct sqphy_softc *sc; 338 { 339 int reg, i; 340 341 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_RESET|BMCR_ISO); 342 343 /* Wait 100ms for it to complete. */ 344 for (i = 0; i < 100; i++) { 345 reg = PHY_READ(&sc->sc_mii, MII_BMCR); 346 if ((reg & BMCR_RESET) == 0) 347 break; 348 delay(1000); 349 } 350 351 /* Make sure the PHY is isolated. */ 352 if (sc->sc_mii.mii_inst != 0) 353 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO); 354 } 355
Indexes created Tue Sep 23 02:09:52 GMT 2025