nsphy.c revision 59391
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) 94static const char rcsid[] = 95 "$FreeBSD: head/sys/dev/mii/nsphy.c 59391 2000-04-19 14:58:28Z phk $"; 96#endif 97 98static int nsphy_probe __P((device_t)); 99static int nsphy_attach __P((device_t)); 100static int nsphy_detach __P((device_t)); 101 102static 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 111static devclass_t nsphy_devclass; 112 113static driver_t nsphy_driver = { 114 "nsphy", 115 nsphy_methods, 116 sizeof(struct mii_softc) 117}; 118 119DRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0); 120 121int nsphy_service __P((struct mii_softc *, struct mii_data *, int)); 122void nsphy_status __P((struct mii_softc *)); 123 124static 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 138 return (ENXIO); 139 140 return (0); 141} 142 143static int nsphy_attach(dev) 144 device_t dev; 145{ 146 struct mii_softc *sc; 147 struct mii_attach_args *ma; 148 struct mii_data *mii; 149 150 sc = device_get_softc(dev); 151 ma = device_get_ivars(dev); 152 sc->mii_dev = device_get_parent(dev); 153 mii = device_get_softc(sc->mii_dev); 154 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 155 156 sc->mii_inst = mii->mii_instance; 157 sc->mii_phy = ma->mii_phyno; 158 sc->mii_service = nsphy_service; 159 sc->mii_pdata = mii; 160 161#ifdef foo 162 /* 163 * i82557 wedges if all of its PHYs are isolated! 164 */ 165 if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), 166 "fxp") == 0 && mii->mii_instance == 0) 167#endif 168 169 sc->mii_flags |= MIIF_NOISOLATE; 170 mii->mii_instance++; 171 172#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 173 174#if 0 175 /* Can't do this on the i82557! */ 176 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 177 BMCR_ISO); 178#endif 179 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 180 BMCR_LOOP|BMCR_S100); 181 182 mii_phy_reset(sc); 183 184 sc->mii_capabilities = 185 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 186 device_printf(dev, " "); 187 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 188 printf("no media present"); 189 else 190 mii_add_media(mii, sc->mii_capabilities, 191 sc->mii_inst); 192 printf("\n"); 193#undef ADD 194 195 MIIBUS_MEDIAINIT(sc->mii_dev); 196 return(0); 197} 198 199static int nsphy_detach(dev) 200 device_t dev; 201{ 202 struct mii_softc *sc; 203 struct mii_data *mii; 204 205 sc = device_get_softc(dev); 206 mii = device_get_softc(device_get_parent(dev)); 207 sc->mii_dev = NULL; 208 LIST_REMOVE(sc, mii_list); 209 210 return(0); 211} 212 213int 214nsphy_service(sc, mii, cmd) 215 struct mii_softc *sc; 216 struct mii_data *mii; 217 int cmd; 218{ 219 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 220 int reg; 221 222 switch (cmd) { 223 case MII_POLLSTAT: 224 /* 225 * If we're not polling our PHY instance, just return. 226 */ 227 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 228 return (0); 229 break; 230 231 case MII_MEDIACHG: 232 /* 233 * If the media indicates a different PHY instance, 234 * isolate ourselves. 235 */ 236 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 237 reg = PHY_READ(sc, MII_BMCR); 238 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 239 return (0); 240 } 241 242 /* 243 * If the interface is not up, don't do anything. 244 */ 245 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 246 break; 247 248 reg = PHY_READ(sc, MII_NSPHY_PCR); 249 250 /* 251 * Set up the PCR to use LED4 to indicate full-duplex 252 * in both 10baseT and 100baseTX modes. 253 */ 254 reg |= PCR_LED4MODE; 255 256 /* 257 * Make sure Carrier Intgrity Monitor function is 258 * disabled (normal for Node operation, but sometimes 259 * it's not set?!) 260 */ 261 reg |= PCR_CIMDIS; 262 263 /* 264 * Make sure "force link good" is set to normal mode. 265 * It's only intended for debugging. 266 */ 267 reg |= PCR_FLINK100; 268 269#if 0 270 /* 271 * Mystery bits which are supposedly `reserved', 272 * but we seem to need to set them when the PHY 273 * is connected to some interfaces! 274 */ 275 reg |= 0x0100 | 0x0400; 276#endif 277/* 278 PHY_WRITE(sc, MII_NSPHY_PCR, reg); 279*/ 280 switch (IFM_SUBTYPE(ife->ifm_media)) { 281 case IFM_AUTO: 282 /* 283 * If we're already in auto mode, just return. 284 */ 285 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 286 return (0); 287 (void) mii_phy_auto(sc, 1); 288 break; 289 case IFM_100_T4: 290 /* 291 * XXX Not supported as a manual setting right now. 292 */ 293 return (EINVAL); 294 default: 295 /* 296 * BMCR data is stored in the ifmedia entry. 297 */ 298 PHY_WRITE(sc, MII_ANAR, 299 mii_anar(ife->ifm_media)); 300 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 301 } 302 break; 303 304 case MII_TICK: 305 /* 306 * If we're not currently selected, just return. 307 */ 308 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 309 return (0); 310 311 /* 312 * Only used for autonegotiation. 313 */ 314 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 315 return (0); 316 317 /* 318 * Is the interface even up? 319 */ 320 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 321 return (0); 322 323 /* 324 * Check to see if we have link. If we do, we don't 325 * need to restart the autonegotiation process. Read 326 * the BMSR twice in case it's latched. 327 */ 328 reg = PHY_READ(sc, MII_BMSR) | 329 PHY_READ(sc, MII_BMSR); 330 if (reg & BMSR_LINK) 331 return (0); 332 333 /* 334 * Only retry autonegotiation every 5 seconds. 335 */ 336 if (++sc->mii_ticks != 5) 337 return (0); 338 339 sc->mii_ticks = 0; 340 mii_phy_reset(sc); 341 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 342 return (0); 343 break; 344 } 345 346 /* Update the media status. */ 347 nsphy_status(sc); 348 349 /* Callback if something changed. */ 350 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 351 MIIBUS_STATCHG(sc->mii_dev); 352 sc->mii_active = mii->mii_media_active; 353 } 354 return (0); 355} 356 357void 358nsphy_status(sc) 359 struct mii_softc *sc; 360{ 361 struct mii_data *mii = sc->mii_pdata; 362 int bmsr, bmcr, par, anlpar; 363 364 mii->mii_media_status = IFM_AVALID; 365 mii->mii_media_active = IFM_ETHER; 366 367 bmsr = PHY_READ(sc, MII_BMSR) | 368 PHY_READ(sc, MII_BMSR); 369 if (bmsr & BMSR_LINK) 370 mii->mii_media_status |= IFM_ACTIVE; 371 372 bmcr = PHY_READ(sc, MII_BMCR); 373 if (bmcr & BMCR_ISO) { 374 mii->mii_media_active |= IFM_NONE; 375 mii->mii_media_status = 0; 376 return; 377 } 378 379 if (bmcr & BMCR_LOOP) 380 mii->mii_media_active |= IFM_LOOP; 381 382 if (bmcr & BMCR_AUTOEN) { 383 /* 384 * The PAR status bits are only valid of autonegotiation 385 * has completed (or it's disabled). 386 */ 387 if ((bmsr & BMSR_ACOMP) == 0) { 388 /* Erg, still trying, I guess... */ 389 mii->mii_media_active |= IFM_NONE; 390 return; 391 } 392 393 /* 394 * Argh. The PAR doesn't seem to indicate duplex mode 395 * properly! Determine media based on link partner's 396 * advertised capabilities. 397 */ 398 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 399 anlpar = PHY_READ(sc, MII_ANAR) & 400 PHY_READ(sc, MII_ANLPAR); 401 if (anlpar & ANLPAR_T4) 402 mii->mii_media_active |= IFM_100_T4; 403 else if (anlpar & ANLPAR_TX_FD) 404 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 405 else if (anlpar & ANLPAR_TX) 406 mii->mii_media_active |= IFM_100_TX; 407 else if (anlpar & ANLPAR_10_FD) 408 mii->mii_media_active |= IFM_10_T|IFM_FDX; 409 else if (anlpar & ANLPAR_10) 410 mii->mii_media_active |= IFM_10_T; 411 else 412 mii->mii_media_active |= IFM_NONE; 413 return; 414 } 415 416 /* 417 * Link partner is not capable of autonegotiation. 418 * We will never be in full-duplex mode if this is 419 * the case, so reading the PAR is OK. 420 */ 421 par = PHY_READ(sc, MII_NSPHY_PAR); 422 if (par & PAR_10) 423 mii->mii_media_active |= IFM_10_T; 424 else 425 mii->mii_media_active |= IFM_100_TX; 426#if 0 427 if (par & PAR_FDX) 428 mii->mii_media_active |= IFM_FDX; 429#endif 430 } else 431 mii->mii_media_active |= mii_media_from_bmcr(bmcr); 432} 433