1 /* OpenBSD: lxtphy.c,v 1.5 2000/08/26 20:04:17 nate Exp */ 2 /* NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp */ 3 4 /*- 5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 * 40 * $FreeBSD: src/sys/dev/mii/lxtphy.c,v 1.1.2.1 2001/06/08 19:58:33 semenu Exp $ 41 * $DragonFly: src/sys/dev/netif/mii_layer/lxtphy.c,v 1.8 2005/12/11 01:54:08 swildner Exp $ 42 */ 43 44 /* 45 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by Manuel Bouyer. 58 * 4. The name of the author may not be used to endorse or promote products 59 * derived from this software without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 62 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 63 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 64 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 65 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 66 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 67 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 68 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 69 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 70 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 71 */ 72 73 /* 74 * driver for Level One's LXT-970 ethernet 10/100 PHY 75 * datasheet from www.level1.com 76 */ 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/socket.h> 82 #include <sys/errno.h> 83 #include <sys/module.h> 84 #include <sys/bus.h> 85 86 #include <net/if.h> 87 #include <net/if_media.h> 88 89 #include "mii.h" 90 #include "miivar.h" 91 #include "miidevs.h" 92 93 #include "lxtphyreg.h" 94 95 #include "miibus_if.h" 96 97 static int lxtphy_probe (device_t); 98 static int lxtphy_attach (device_t); 99 static int lxtphy_detach (device_t); 100 101 static device_method_t lxtphy_methods[] = { 102 /* device interface */ 103 DEVMETHOD(device_probe, lxtphy_probe), 104 DEVMETHOD(device_attach, lxtphy_attach), 105 DEVMETHOD(device_detach, lxtphy_detach), 106 DEVMETHOD(device_shutdown, bus_generic_shutdown), 107 { 0, 0 } 108 }; 109 110 static devclass_t lxtphy_devclass; 111 112 static driver_t lxtphy_driver = { 113 "lxtphy", 114 lxtphy_methods, 115 sizeof(struct mii_softc) 116 }; 117 118 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 119 120 static int lxtphy_service (struct mii_softc *, struct mii_data *, int); 121 static void lxtphy_status (struct mii_softc *); 122 static void lxtphy_set_tp (struct mii_softc *); 123 static void lxtphy_set_fx (struct mii_softc *); 124 125 static int 126 lxtphy_probe(device_t dev) 127 { 128 struct mii_attach_args *ma; 129 130 ma = device_get_ivars(dev); 131 132 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 && 133 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) { 134 device_set_desc(dev, MII_STR_xxLEVEL1_LXT970); 135 } else 136 return (ENXIO); 137 138 return (0); 139 } 140 141 static int 142 lxtphy_attach(device_t dev) 143 { 144 struct mii_softc *sc; 145 struct mii_attach_args *ma; 146 struct mii_data *mii; 147 148 sc = device_get_softc(dev); 149 ma = device_get_ivars(dev); 150 mii_softc_init(sc, ma); 151 sc->mii_dev = device_get_parent(dev); 152 mii = device_get_softc(sc->mii_dev); 153 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 154 155 sc->mii_inst = mii->mii_instance; 156 sc->mii_service = lxtphy_service; 157 sc->mii_pdata = mii; 158 sc->mii_flags |= MIIF_NOISOLATE; 159 160 mii_phy_reset(sc); 161 162 mii->mii_instance++; 163 164 sc->mii_capabilities = 165 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 166 device_printf(dev, " "); 167 168 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 169 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 170 BMCR_ISO); 171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 172 BMCR_S100); 173 printf("100baseFX, "); 174 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 175 BMCR_S100|BMCR_FDX); 176 printf("100baseFX-FDX, "); 177 #undef ADD 178 179 if (sc->mii_capabilities & BMSR_MEDIAMASK) 180 mii_add_media(sc, sc->mii_capabilities); 181 printf("\n"); 182 183 MIIBUS_MEDIAINIT(sc->mii_dev); 184 return(0); 185 } 186 187 188 static int 189 lxtphy_detach(device_t dev) 190 { 191 struct mii_softc *sc; 192 struct mii_data *mii; 193 194 sc = device_get_softc(dev); 195 mii = device_get_softc(device_get_parent(dev)); 196 sc->mii_dev = NULL; 197 LIST_REMOVE(sc, mii_list); 198 199 return(0); 200 } 201 202 static int 203 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 204 { 205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 206 int reg; 207 208 switch (cmd) { 209 case MII_POLLSTAT: 210 /* 211 * If we're not polling our PHY instance, just return. 212 */ 213 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 214 return (0); 215 break; 216 217 case MII_MEDIACHG: 218 /* 219 * If the media indicates a different PHY instance, 220 * isolate ourselves. 221 */ 222 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 223 reg = PHY_READ(sc, MII_BMCR); 224 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 225 return (0); 226 } 227 228 /* 229 * If the interface is not up, don't do anything. 230 */ 231 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 232 break; 233 234 switch (IFM_SUBTYPE(ife->ifm_media)) { 235 case IFM_AUTO: 236 /* 237 * If we're already in auto mode, just return. 238 */ 239 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 240 return (0); 241 242 lxtphy_set_tp(sc); 243 244 (void) mii_phy_auto(sc, 1); 245 break; 246 case IFM_100_T4: 247 /* 248 * XXX Not supported as a manual setting right now. 249 */ 250 return (EINVAL); 251 252 case IFM_100_FX: 253 lxtphy_set_fx(sc); 254 255 default: 256 /* 257 * BMCR data is stored in the ifmedia entry. 258 */ 259 PHY_WRITE(sc, MII_ANAR, 260 mii_anar(ife->ifm_media)); 261 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 262 } 263 break; 264 265 case MII_TICK: 266 /* 267 * If we're not currently selected, just return. 268 */ 269 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 270 return (0); 271 272 /* 273 * Only used for autonegotiation. 274 */ 275 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 276 return (0); 277 278 /* 279 * Is the interface even up? 280 */ 281 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 282 return (0); 283 284 /* 285 * Check to see if we have link. If we do, we don't 286 * need to restart the autonegotiation process. Read 287 * the BMSR twice in case it's latched. 288 */ 289 reg = PHY_READ(sc, MII_BMSR) | 290 PHY_READ(sc, MII_BMSR); 291 if (reg & BMSR_LINK) 292 return (0); 293 294 /* 295 * Only retry autonegotiation every 5 seconds. 296 */ 297 if (++sc->mii_ticks != 5) 298 return (0); 299 300 sc->mii_ticks = 0; 301 mii_phy_reset(sc); 302 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 303 return (0); 304 break; 305 } 306 307 /* Update the media status. */ 308 lxtphy_status(sc); 309 310 /* Callback if something changed. */ 311 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 312 MIIBUS_STATCHG(sc->mii_dev); 313 sc->mii_active = mii->mii_media_active; 314 } 315 return (0); 316 } 317 318 static void 319 lxtphy_status(struct mii_softc *sc) 320 { 321 struct mii_data *mii = sc->mii_pdata; 322 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 323 int bmcr, bmsr, csr; 324 325 mii->mii_media_status = IFM_AVALID; 326 mii->mii_media_active = IFM_ETHER; 327 328 /* 329 * Get link status from the CSR; we need to read the CSR 330 * for media type anyhow, and the link status in the CSR 331 * doens't latch, so fewer register reads are required. 332 */ 333 csr = PHY_READ(sc, MII_LXTPHY_CSR); 334 if (csr & CSR_LINK) 335 mii->mii_media_status |= IFM_ACTIVE; 336 337 bmcr = PHY_READ(sc, MII_BMCR); 338 if (bmcr & BMCR_ISO) { 339 mii->mii_media_active |= IFM_NONE; 340 mii->mii_media_status = 0; 341 return; 342 } 343 344 if (bmcr & BMCR_LOOP) 345 mii->mii_media_active |= IFM_LOOP; 346 347 if (bmcr & BMCR_AUTOEN) { 348 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 349 if ((bmsr & BMSR_ACOMP) == 0) { 350 /* Erg, still trying, I guess... */ 351 mii->mii_media_active |= IFM_NONE; 352 return; 353 } 354 if (csr & CSR_SPEED) 355 mii->mii_media_active |= IFM_100_TX; 356 else 357 mii->mii_media_active |= IFM_10_T; 358 if (csr & CSR_DUPLEX) 359 mii->mii_media_active |= IFM_FDX; 360 } else 361 mii->mii_media_active = ife->ifm_media; 362 } 363 364 static void 365 lxtphy_set_tp(struct mii_softc *sc) 366 { 367 int cfg; 368 369 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 370 cfg &= ~CONFIG_100BASEFX; 371 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 372 } 373 374 static void 375 lxtphy_set_fx(struct mii_softc *sc) 376 { 377 int cfg; 378 379 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 380 cfg |= CONFIG_100BASEFX; 381 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 382 } 383