qsphy.c revision 1.1
1 /* $NetBSD: qsphy.c,v 1.1 1998/08/11 00:01:03 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 Quality Semiconductor's QS6612 ethernet 10/100 PHY 71 * datasheet from www.qualitysemi.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/qsphyreg.h> 89 90 struct qsphy_softc { 91 struct mii_softc sc_mii; /* generic PHY */ 92 int sc_capabilities; 93 int sc_active; 94 }; 95 96 int qsphymatch __P((struct device *, struct cfdata *, void *)); 97 void qsphyattach __P((struct device *, struct device *, void *)); 98 99 struct cfattach qsphy_ca = { 100 sizeof(struct qsphy_softc), qsphymatch, qsphyattach 101 }; 102 103 #define QSPHY_READ(sc, reg) \ 104 (*(sc)->sc_mii.mii_pdata->mii_readreg)((sc)->sc_mii.mii_dev.dv_parent, \ 105 (sc)->sc_mii.mii_phy, (reg)) 106 107 #define QSPHY_WRITE(sc, reg, val) \ 108 (*(sc)->sc_mii.mii_pdata->mii_writereg)((sc)->sc_mii.mii_dev.dv_parent, \ 109 (sc)->sc_mii.mii_phy, (reg), (val)) 110 111 int qsphy_service __P((struct mii_softc *, struct mii_data *, int)); 112 void qsphy_reset __P((struct qsphy_softc *)); 113 void qsphy_auto __P((struct qsphy_softc *)); 114 void qsphy_status __P((struct qsphy_softc *)); 115 116 int 117 qsphymatch(parent, match, aux) 118 struct device *parent; 119 struct cfdata *match; 120 void *aux; 121 { 122 struct mii_attach_args *ma = aux; 123 124 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_QUALSEMI && 125 MII_MODEL(ma->mii_id2) == MII_MODEL_QUALSEMI_QS6612) 126 return (1); 127 128 return (0); 129 } 130 131 void 132 qsphyattach(parent, self, aux) 133 struct device *parent, *self; 134 void *aux; 135 { 136 struct qsphy_softc *sc = (struct qsphy_softc *)self; 137 struct mii_attach_args *ma = aux; 138 struct mii_data *mii = ma->mii_data; 139 140 printf(": %s, rev. %d\n", MII_STR_QUALSEMI_QS6612, 141 MII_REV(ma->mii_id2)); 142 143 sc->sc_mii.mii_inst = mii->mii_instance; 144 sc->sc_mii.mii_phy = ma->mii_phyno; 145 sc->sc_mii.mii_service = qsphy_service; 146 sc->sc_mii.mii_pdata = mii; 147 148 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 149 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst), 151 BMCR_ISO); 152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->sc_mii.mii_inst), 153 BMCR_LOOP|BMCR_S100); 154 155 qsphy_reset(sc); 156 157 sc->sc_capabilities = QSPHY_READ(sc, MII_BMSR) & ma->mii_capmask; 158 printf("%s: ", sc->sc_mii.mii_dev.dv_xname); 159 if ((sc->sc_capabilities & BMSR_MEDIAMASK) == 0) 160 printf("no media present"); 161 else 162 mii_add_media(mii, sc->sc_capabilities, sc->sc_mii.mii_inst); 163 printf("\n"); 164 #undef ADD 165 } 166 167 int 168 qsphy_service(self, mii, cmd) 169 struct mii_softc *self; 170 struct mii_data *mii; 171 int cmd; 172 { 173 struct qsphy_softc *sc = (struct qsphy_softc *)self; 174 int reg; 175 176 switch (cmd) { 177 case MII_POLLSTAT: 178 /* 179 * If we're not polling our PHY instance, just return. 180 */ 181 if (IFM_INST(mii->mii_media.ifm_media) != 182 sc->sc_mii.mii_inst) 183 return (0); 184 break; 185 186 case MII_MEDIACHG: 187 /* 188 * If the media indicates a different PHY instance, 189 * isolate ourselves. 190 */ 191 if (IFM_INST(mii->mii_media.ifm_media) != 192 sc->sc_mii.mii_inst) { 193 reg = QSPHY_READ(sc, MII_BMCR); 194 QSPHY_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(mii->mii_media.ifm_media)) { 205 case IFM_AUTO: 206 /* 207 * If we're already in auto mode, just return. 208 */ 209 if (QSPHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 210 return (0); 211 qsphy_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 QSPHY_WRITE(sc, MII_ANAR, 223 mii_anar(mii->mii_media.ifm_media)); 224 QSPHY_WRITE(sc, MII_BMCR, 225 mii->mii_media.ifm_cur->ifm_data); 226 } 227 break; 228 229 case MII_TICK: 230 /* 231 * If we're not currently selected, just return. 232 */ 233 if (IFM_INST(mii->mii_media.ifm_media) != 234 sc->sc_mii.mii_inst) 235 return (0); 236 237 /* 238 * Only used for autonegotiation. 239 */ 240 if (IFM_SUBTYPE(mii->mii_media.ifm_media) != IFM_AUTO) 241 return (0); 242 243 /* 244 * Is the interface even up? 245 */ 246 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 247 return (0); 248 249 /* 250 * The QS6612's autonegotiation doesn't need to be 251 * kicked; it continues in the background. 252 */ 253 break; 254 } 255 256 /* Update the media status. */ 257 qsphy_status(sc); 258 259 /* Callback if something changed. */ 260 if (sc->sc_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 261 (*mii->mii_statchg)(sc->sc_mii.mii_dev.dv_parent); 262 sc->sc_active = mii->mii_media_active; 263 } 264 return (0); 265 } 266 267 void 268 qsphy_status(sc) 269 struct qsphy_softc *sc; 270 { 271 struct mii_data *mii = sc->sc_mii.mii_pdata; 272 int bmsr, bmcr, pctl; 273 274 mii->mii_media_status = IFM_AVALID; 275 mii->mii_media_active = IFM_ETHER; 276 277 bmsr = QSPHY_READ(sc, MII_BMSR) | QSPHY_READ(sc, MII_BMSR); 278 if (bmsr & BMSR_LINK) 279 mii->mii_media_status |= IFM_ACTIVE; 280 281 bmcr = QSPHY_READ(sc, MII_BMCR); 282 if (bmcr & BMCR_ISO) { 283 mii->mii_media_active |= IFM_NONE; 284 mii->mii_media_status = 0; 285 return; 286 } 287 288 if (bmcr & BMCR_LOOP) 289 mii->mii_media_active |= IFM_LOOP; 290 291 pctl = QSPHY_READ(sc, MII_QSPHY_PCTL) | QSPHY_READ(sc, MII_QSPHY_PCTL); 292 switch (pctl & PCTL_OPMASK) { 293 case PCTL_10_T: 294 mii->mii_media_active |= IFM_10_T; 295 break; 296 case PCTL_10_T_FDX: 297 mii->mii_media_active |= IFM_10_T|IFM_FDX; 298 break; 299 case PCTL_100_TX: 300 mii->mii_media_active |= IFM_100_TX; 301 break; 302 case PCTL_100_TX_FDX: 303 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 304 break; 305 case PCTL_100_T4: 306 mii->mii_media_active |= IFM_100_T4; 307 break; 308 default: 309 if (bmcr & BMCR_AUTOEN) { 310 /* Must still be in-progress. */ 311 mii->mii_media_active |= IFM_AUTO; 312 } else { 313 /* Erg... this shouldn't happen. */ 314 mii->mii_media_active |= IFM_NONE; 315 } 316 } 317 } 318 319 void 320 qsphy_auto(sc) 321 struct qsphy_softc *sc; 322 { 323 int bmsr, i; 324 325 QSPHY_WRITE(sc, MII_ANAR, 326 BMSR_MEDIA_TO_ANAR(sc->sc_capabilities) | ANAR_CSMA); 327 QSPHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 328 329 /* Wait 500ms for it to complete. */ 330 for (i = 0; i < 500; i++) { 331 if ((bmsr = QSPHY_READ(sc, MII_BMSR)) & BMSR_ACOMP) 332 return; 333 delay(1000); 334 } 335 if ((bmsr & BMSR_ACOMP) == 0) 336 printf("%s: autonegotiation failed to complete\n", 337 sc->sc_mii.mii_dev.dv_xname); 338 } 339 340 void 341 qsphy_reset(sc) 342 struct qsphy_softc *sc; 343 { 344 int reg, i; 345 346 QSPHY_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 = QSPHY_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 QSPHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 359 360 QSPHY_WRITE(sc, MII_QSPHY_IMASK, 0); 361 } 362
Indexes created Wed Sep 24 05:09:52 GMT 2025