1 /* $NetBSD: nsphy.c,v 1.18 1999/07/14 23:57:36 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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 National Semiconductor's DP83840A ethernet 10/100 PHY 71 * Data Sheet available from www.national.com 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/socket.h> 78 #include <sys/errno.h> 79 #include <sys/module.h> 80 #include <sys/bus.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <dev/mii/mii.h> 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/miidevs.h> 88 89 #include <dev/mii/nsphyreg.h> 90 91 #include "miibus_if.h" 92 93 #if !defined(lint) 94 static const char rcsid[] = 95 "$FreeBSD$"; 96 #endif 97 98 static int nsphy_probe __P((device_t)); 99 static int nsphy_attach __P((device_t)); 100 static int nsphy_detach __P((device_t)); 101 102 static device_method_t nsphy_methods[] = { 103 /* device interface */ 104 DEVMETHOD(device_probe, nsphy_probe), 105 DEVMETHOD(device_attach, nsphy_attach), 106 DEVMETHOD(device_detach, nsphy_detach), 107 DEVMETHOD(device_shutdown, bus_generic_shutdown), 108 { 0, 0 } 109 }; 110 111 static devclass_t nsphy_devclass; 112 113 static driver_t nsphy_driver = { 114 "nsphy", 115 nsphy_methods, 116 sizeof(struct mii_softc) 117 }; 118 119 DRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0); 120 121 int nsphy_service __P((struct mii_softc *, struct mii_data *, int)); 122 void nsphy_status __P((struct mii_softc *)); 123 124 static int nsphy_probe(dev) 125 device_t dev; 126 { 127 struct mii_attach_args *ma; 128 129 ma = device_get_ivars(dev); 130 131 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI && 132 MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83840) { 133 device_set_desc(dev, MII_STR_NATSEMI_DP83840); 134 } else if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_QUALSEMI && 135 MII_MODEL(ma->mii_id2) == MII_MODEL_QUALSEMI_QS6612) { 136 device_set_desc(dev, MII_STR_QUALSEMI_QS6612); 137 } else if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxALTIMA && 138 MII_MODEL(ma->mii_id2) == MII_MODEL_xxALTIMA_AC101) { 139 device_set_desc(dev, MII_STR_xxALTIMA_AC101); 140 } else 141 return (ENXIO); 142 143 return (0); 144 } 145 146 static int nsphy_attach(dev) 147 device_t dev; 148 { 149 struct mii_softc *sc; 150 struct mii_attach_args *ma; 151 struct mii_data *mii; 152 153 sc = device_get_softc(dev); 154 ma = device_get_ivars(dev); 155 sc->mii_dev = device_get_parent(dev); 156 mii = device_get_softc(sc->mii_dev); 157 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 158 159 sc->mii_inst = mii->mii_instance; 160 sc->mii_phy = ma->mii_phyno; 161 sc->mii_service = nsphy_service; 162 sc->mii_pdata = mii; 163 164 #ifdef foo 165 /* 166 * i82557 wedges if all of its PHYs are isolated! 167 */ 168 if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), 169 "fxp") == 0 && mii->mii_instance == 0) 170 #endif 171 172 sc->mii_flags |= MIIF_NOISOLATE; 173 mii->mii_instance++; 174 175 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 176 177 #if 0 178 /* Can't do this on the i82557! */ 179 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 180 BMCR_ISO); 181 #endif 182 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 183 BMCR_LOOP|BMCR_S100); 184 185 mii_phy_reset(sc); 186 187 sc->mii_capabilities = 188 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 189 device_printf(dev, " "); 190 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 191 printf("no media present"); 192 else 193 mii_add_media(mii, sc->mii_capabilities, 194 sc->mii_inst); 195 printf("\n"); 196 #undef ADD 197 198 MIIBUS_MEDIAINIT(sc->mii_dev); 199 return(0); 200 } 201 202 static int nsphy_detach(dev) 203 device_t dev; 204 { 205 struct mii_softc *sc; 206 struct mii_data *mii; 207 208 sc = device_get_softc(dev); 209 mii = device_get_softc(device_get_parent(dev)); 210 mii_phy_auto_stop(sc); 211 sc->mii_dev = NULL; 212 LIST_REMOVE(sc, mii_list); 213 214 return(0); 215 } 216 217 int 218 nsphy_service(sc, mii, cmd) 219 struct mii_softc *sc; 220 struct mii_data *mii; 221 int cmd; 222 { 223 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 224 int reg; 225 226 switch (cmd) { 227 case MII_POLLSTAT: 228 /* 229 * If we're not polling our PHY instance, just return. 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 232 return (0); 233 break; 234 235 case MII_MEDIACHG: 236 /* 237 * If the media indicates a different PHY instance, 238 * isolate ourselves. 239 */ 240 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 241 reg = PHY_READ(sc, MII_BMCR); 242 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 243 return (0); 244 } 245 246 /* 247 * If the interface is not up, don't do anything. 248 */ 249 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 250 break; 251 252 reg = PHY_READ(sc, MII_NSPHY_PCR); 253 254 /* 255 * Set up the PCR to use LED4 to indicate full-duplex 256 * in both 10baseT and 100baseTX modes. 257 */ 258 reg |= PCR_LED4MODE; 259 260 /* 261 * Make sure Carrier Intgrity Monitor function is 262 * disabled (normal for Node operation, but sometimes 263 * it's not set?!) 264 */ 265 reg |= PCR_CIMDIS; 266 267 /* 268 * Make sure "force link good" is set to normal mode. 269 * It's only intended for debugging. 270 */ 271 reg |= PCR_FLINK100; 272 273 #if 0 274 /* 275 * Mystery bits which are supposedly `reserved', 276 * but we seem to need to set them when the PHY 277 * is connected to some interfaces! 278 */ 279 reg |= 0x0100 | 0x0400; 280 #endif 281 /* 282 PHY_WRITE(sc, MII_NSPHY_PCR, reg); 283 */ 284 switch (IFM_SUBTYPE(ife->ifm_media)) { 285 case IFM_AUTO: 286 /* 287 * If we're already in auto mode, just return. 288 */ 289 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 290 return (0); 291 (void) mii_phy_auto(sc, 1); 292 break; 293 case IFM_100_T4: 294 /* 295 * XXX Not supported as a manual setting right now. 296 */ 297 return (EINVAL); 298 default: 299 /* 300 * BMCR data is stored in the ifmedia entry. 301 */ 302 PHY_WRITE(sc, MII_ANAR, 303 mii_anar(ife->ifm_media)); 304 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 305 } 306 break; 307 308 case MII_TICK: 309 /* 310 * If we're not currently selected, just return. 311 */ 312 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 313 return (0); 314 315 /* 316 * Only used for autonegotiation. 317 */ 318 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 319 return (0); 320 321 /* 322 * Is the interface even up? 323 */ 324 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 325 return (0); 326 327 /* 328 * Check to see if we have link. If we do, we don't 329 * need to restart the autonegotiation process. Read 330 * the BMSR twice in case it's latched. 331 */ 332 reg = PHY_READ(sc, MII_BMSR) | 333 PHY_READ(sc, MII_BMSR); 334 if (reg & BMSR_LINK) 335 return (0); 336 337 /* 338 * Only retry autonegotiation every 5 seconds. 339 */ 340 if (++sc->mii_ticks != 5) 341 return (0); 342 343 sc->mii_ticks = 0; 344 mii_phy_reset(sc); 345 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 346 return (0); 347 break; 348 } 349 350 /* Update the media status. */ 351 nsphy_status(sc); 352 353 /* Callback if something changed. */ 354 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 355 MIIBUS_STATCHG(sc->mii_dev); 356 sc->mii_active = mii->mii_media_active; 357 } 358 return (0); 359 } 360 361 void 362 nsphy_status(sc) 363 struct mii_softc *sc; 364 { 365 struct mii_data *mii = sc->mii_pdata; 366 int bmsr, bmcr, par, anlpar; 367 368 mii->mii_media_status = IFM_AVALID; 369 mii->mii_media_active = IFM_ETHER; 370 371 bmsr = PHY_READ(sc, MII_BMSR) | 372 PHY_READ(sc, MII_BMSR); 373 if (bmsr & BMSR_LINK) 374 mii->mii_media_status |= IFM_ACTIVE; 375 376 bmcr = PHY_READ(sc, MII_BMCR); 377 if (bmcr & BMCR_ISO) { 378 mii->mii_media_active |= IFM_NONE; 379 mii->mii_media_status = 0; 380 return; 381 } 382 383 if (bmcr & BMCR_LOOP) 384 mii->mii_media_active |= IFM_LOOP; 385 386 if (bmcr & BMCR_AUTOEN) { 387 /* 388 * The PAR status bits are only valid of autonegotiation 389 * has completed (or it's disabled). 390 */ 391 if ((bmsr & BMSR_ACOMP) == 0) { 392 /* Erg, still trying, I guess... */ 393 mii->mii_media_active |= IFM_NONE; 394 return; 395 } 396 397 /* 398 * Argh. The PAR doesn't seem to indicate duplex mode 399 * properly! Determine media based on link partner's 400 * advertised capabilities. 401 */ 402 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 403 anlpar = PHY_READ(sc, MII_ANAR) & 404 PHY_READ(sc, MII_ANLPAR); 405 if (anlpar & ANLPAR_T4) 406 mii->mii_media_active |= IFM_100_T4; 407 else if (anlpar & ANLPAR_TX_FD) 408 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 409 else if (anlpar & ANLPAR_TX) 410 mii->mii_media_active |= IFM_100_TX; 411 else if (anlpar & ANLPAR_10_FD) 412 mii->mii_media_active |= IFM_10_T|IFM_FDX; 413 else if (anlpar & ANLPAR_10) 414 mii->mii_media_active |= IFM_10_T; 415 else 416 mii->mii_media_active |= IFM_NONE; 417 return; 418 } 419 420 /* 421 * Link partner is not capable of autonegotiation. 422 * We will never be in full-duplex mode if this is 423 * the case, so reading the PAR is OK. 424 */ 425 par = PHY_READ(sc, MII_NSPHY_PAR); 426 if (par & PAR_10) 427 mii->mii_media_active |= IFM_10_T; 428 else 429 mii->mii_media_active |= IFM_100_TX; 430 #if 0 431 if (par & PAR_FDX) 432 mii->mii_media_active |= IFM_FDX; 433 #endif 434 } else 435 mii->mii_media_active |= mii_media_from_bmcr(bmcr); 436 } 437