lxtphy.c revision 95667
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 41/* 42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by Manuel Bouyer. 55 * 4. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70/* 71 * driver for Level One's LXT-970 ethernet 10/100 PHY 72 * datasheet from www.level1.com 73 */ 74 75#include <sys/param.h> 76#include <sys/systm.h> 77#include <sys/kernel.h> 78#include <sys/socket.h> 79#include <sys/errno.h> 80#include <sys/module.h> 81#include <sys/bus.h> 82 83#include <net/if.h> 84#include <net/if_media.h> 85 86#include <dev/mii/mii.h> 87#include <dev/mii/miivar.h> 88#include <dev/mii/miidevs.h> 89 90#include <dev/mii/lxtphyreg.h> 91 92#include "miibus_if.h" 93 94#if !defined(lint) 95static const char rcsid[] = 96 "$FreeBSD: head/sys/dev/mii/lxtphy.c 95667 2002-04-28 19:25:07Z phk $"; 97#endif 98 99static int lxtphy_probe (device_t); 100static int lxtphy_attach (device_t); 101static int lxtphy_detach (device_t); 102 103static device_method_t lxtphy_methods[] = { 104 /* device interface */ 105 DEVMETHOD(device_probe, lxtphy_probe), 106 DEVMETHOD(device_attach, lxtphy_attach), 107 DEVMETHOD(device_detach, lxtphy_detach), 108 DEVMETHOD(device_shutdown, bus_generic_shutdown), 109 { 0, 0 } 110}; 111 112static devclass_t lxtphy_devclass; 113 114static driver_t lxtphy_driver = { 115 "lxtphy", 116 lxtphy_methods, 117 sizeof(struct mii_softc) 118}; 119 120DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 121 122static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 123static void lxtphy_status(struct mii_softc *); 124static void lxtphy_set_tp(struct mii_softc *); 125static void lxtphy_set_fx(struct mii_softc *); 126 127static int lxtphy_probe(dev) 128 device_t dev; 129{ 130 struct mii_attach_args *ma; 131 132 ma = device_get_ivars(dev); 133 134 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 && 135 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) { 136 device_set_desc(dev, MII_STR_xxLEVEL1_LXT970); 137 } else 138 return (ENXIO); 139 140 return (0); 141} 142 143static int lxtphy_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 = lxtphy_service; 159 sc->mii_pdata = mii; 160 sc->mii_flags |= MIIF_NOISOLATE; 161 162 mii_phy_reset(sc); 163 164 mii->mii_instance++; 165 166 sc->mii_capabilities = 167 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 168 device_printf(dev, " "); 169 170#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 172 BMCR_ISO); 173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 174 BMCR_S100); 175 printf("100baseFX, "); 176 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 177 BMCR_S100|BMCR_FDX); 178 printf("100baseFX-FDX, "); 179#undef ADD 180 181 mii_add_media(sc); 182 printf("\n"); 183 184 MIIBUS_MEDIAINIT(sc->mii_dev); 185 return(0); 186} 187 188 189static int lxtphy_detach(dev) 190 device_t dev; 191{ 192 struct mii_softc *sc; 193 struct mii_data *mii; 194 195 sc = device_get_softc(dev); 196 mii = device_get_softc(device_get_parent(dev)); 197 sc->mii_dev = NULL; 198 LIST_REMOVE(sc, mii_list); 199 200 return(0); 201} 202 203static int 204lxtphy_service(sc, mii, cmd) 205 struct mii_softc *sc; 206 struct mii_data *mii; 207 int cmd; 208{ 209 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 210 int reg; 211 212 switch (cmd) { 213 case MII_POLLSTAT: 214 /* 215 * If we're not polling our PHY instance, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 218 return (0); 219 break; 220 221 case MII_MEDIACHG: 222 /* 223 * If the media indicates a different PHY instance, 224 * isolate ourselves. 225 */ 226 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 227 reg = PHY_READ(sc, MII_BMCR); 228 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 229 return (0); 230 } 231 232 /* 233 * If the interface is not up, don't do anything. 234 */ 235 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 236 break; 237 238 switch (IFM_SUBTYPE(ife->ifm_media)) { 239 case IFM_AUTO: 240 /* 241 * If we're already in auto mode, just return. 242 */ 243 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 244 return (0); 245 246 lxtphy_set_tp(sc); 247 248 (void) mii_phy_auto(sc, 1); 249 break; 250 case IFM_100_T4: 251 /* 252 * XXX Not supported as a manual setting right now. 253 */ 254 return (EINVAL); 255 256 case IFM_100_FX: 257 lxtphy_set_fx(sc); 258 259 default: 260 /* 261 * BMCR data is stored in the ifmedia entry. 262 */ 263 PHY_WRITE(sc, MII_ANAR, 264 mii_anar(ife->ifm_media)); 265 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 266 } 267 break; 268 269 case MII_TICK: 270 /* 271 * If we're not currently selected, just return. 272 */ 273 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 274 return (0); 275 if (mii_phy_tick(sc) == EJUSTRETURN) 276 return (0); 277 break; 278 } 279 280 /* Update the media status. */ 281 lxtphy_status(sc); 282 283 /* Callback if something changed. */ 284 mii_phy_update(sc, cmd); 285 return (0); 286} 287 288static void 289lxtphy_status(sc) 290 struct mii_softc *sc; 291{ 292 struct mii_data *mii = sc->mii_pdata; 293 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 294 int bmcr, bmsr, csr; 295 296 mii->mii_media_status = IFM_AVALID; 297 mii->mii_media_active = IFM_ETHER; 298 299 /* 300 * Get link status from the CSR; we need to read the CSR 301 * for media type anyhow, and the link status in the CSR 302 * doens't latch, so fewer register reads are required. 303 */ 304 csr = PHY_READ(sc, MII_LXTPHY_CSR); 305 if (csr & CSR_LINK) 306 mii->mii_media_status |= IFM_ACTIVE; 307 308 bmcr = PHY_READ(sc, MII_BMCR); 309 if (bmcr & BMCR_ISO) { 310 mii->mii_media_active |= IFM_NONE; 311 mii->mii_media_status = 0; 312 return; 313 } 314 315 if (bmcr & BMCR_LOOP) 316 mii->mii_media_active |= IFM_LOOP; 317 318 if (bmcr & BMCR_AUTOEN) { 319 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 320 if ((bmsr & BMSR_ACOMP) == 0) { 321 /* Erg, still trying, I guess... */ 322 mii->mii_media_active |= IFM_NONE; 323 return; 324 } 325 if (csr & CSR_SPEED) 326 mii->mii_media_active |= IFM_100_TX; 327 else 328 mii->mii_media_active |= IFM_10_T; 329 if (csr & CSR_DUPLEX) 330 mii->mii_media_active |= IFM_FDX; 331 } else 332 mii->mii_media_active = ife->ifm_media; 333} 334 335static void 336lxtphy_set_tp(sc) 337 struct mii_softc *sc; 338{ 339 int cfg; 340 341 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 342 cfg &= ~CONFIG_100BASEFX; 343 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 344} 345 346static void 347lxtphy_set_fx(sc) 348 struct mii_softc *sc; 349{ 350 int cfg; 351 352 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 353 cfg |= CONFIG_100BASEFX; 354 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 355} 356 357