lxtphy.c revision 115520
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/cdefs.h> 76__FBSDID("$FreeBSD: head/sys/dev/mii/lxtphy.c 115520 2003-05-31 19:48:33Z phk $"); 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 <dev/mii/mii.h> 90#include <dev/mii/miivar.h> 91#include "miidevs.h" 92 93#include <dev/mii/lxtphyreg.h> 94 95#include "miibus_if.h" 96 97static int lxtphy_probe(device_t); 98static int lxtphy_attach(device_t); 99 100static device_method_t lxtphy_methods[] = { 101 /* device interface */ 102 DEVMETHOD(device_probe, lxtphy_probe), 103 DEVMETHOD(device_attach, lxtphy_attach), 104 DEVMETHOD(device_detach, mii_phy_detach), 105 DEVMETHOD(device_shutdown, bus_generic_shutdown), 106 { 0, 0 } 107}; 108 109static devclass_t lxtphy_devclass; 110 111static driver_t lxtphy_driver = { 112 "lxtphy", 113 lxtphy_methods, 114 sizeof(struct mii_softc) 115}; 116 117DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 118 119static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 120static void lxtphy_status(struct mii_softc *); 121static void lxtphy_set_tp(struct mii_softc *); 122static void lxtphy_set_fx(struct mii_softc *); 123 124static int 125lxtphy_probe(dev) 126 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 141static int 142lxtphy_attach(dev) 143 device_t dev; 144{ 145 struct mii_softc *sc; 146 struct mii_attach_args *ma; 147 struct mii_data *mii; 148 149 sc = device_get_softc(dev); 150 ma = device_get_ivars(dev); 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_phy = ma->mii_phyno; 157 sc->mii_service = lxtphy_service; 158 sc->mii_pdata = mii; 159 sc->mii_flags |= MIIF_NOISOLATE; 160 161 mii_phy_reset(sc); 162 163 mii->mii_instance++; 164 165 sc->mii_capabilities = 166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 167 device_printf(dev, " "); 168 169#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 170 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 171 BMCR_ISO); 172 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 173 BMCR_S100); 174 printf("100baseFX, "); 175 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 176 BMCR_S100|BMCR_FDX); 177 printf("100baseFX-FDX, "); 178#undef ADD 179 180 mii_add_media(sc); 181 printf("\n"); 182 183 MIIBUS_MEDIAINIT(sc->mii_dev); 184 return(0); 185} 186 187static int 188lxtphy_service(sc, mii, cmd) 189 struct mii_softc *sc; 190 struct mii_data *mii; 191 int cmd; 192{ 193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 194 int reg; 195 196 switch (cmd) { 197 case MII_POLLSTAT: 198 /* 199 * If we're not polling our PHY instance, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 202 return (0); 203 break; 204 205 case MII_MEDIACHG: 206 /* 207 * If the media indicates a different PHY instance, 208 * isolate ourselves. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 211 reg = PHY_READ(sc, MII_BMCR); 212 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 213 return (0); 214 } 215 216 /* 217 * If the interface is not up, don't do anything. 218 */ 219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 220 break; 221 222 switch (IFM_SUBTYPE(ife->ifm_media)) { 223 case IFM_AUTO: 224 /* 225 * If we're already in auto mode, just return. 226 */ 227 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 228 return (0); 229 230 lxtphy_set_tp(sc); 231 232 (void) mii_phy_auto(sc); 233 break; 234 case IFM_100_T4: 235 /* 236 * XXX Not supported as a manual setting right now. 237 */ 238 return (EINVAL); 239 240 case IFM_100_FX: 241 lxtphy_set_fx(sc); 242 /* XXX: fall though intentional ?? */ 243 default: 244 /* 245 * BMCR data is stored in the ifmedia entry. 246 */ 247 PHY_WRITE(sc, MII_ANAR, 248 mii_anar(ife->ifm_media)); 249 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 250 } 251 break; 252 253 case MII_TICK: 254 /* 255 * If we're not currently selected, just return. 256 */ 257 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 258 return (0); 259 if (mii_phy_tick(sc) == EJUSTRETURN) 260 return (0); 261 break; 262 } 263 264 /* Update the media status. */ 265 lxtphy_status(sc); 266 267 /* Callback if something changed. */ 268 mii_phy_update(sc, cmd); 269 return (0); 270} 271 272static void 273lxtphy_status(sc) 274 struct mii_softc *sc; 275{ 276 struct mii_data *mii = sc->mii_pdata; 277 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 278 int bmcr, bmsr, csr; 279 280 mii->mii_media_status = IFM_AVALID; 281 mii->mii_media_active = IFM_ETHER; 282 283 /* 284 * Get link status from the CSR; we need to read the CSR 285 * for media type anyhow, and the link status in the CSR 286 * doens't latch, so fewer register reads are required. 287 */ 288 csr = PHY_READ(sc, MII_LXTPHY_CSR); 289 if (csr & CSR_LINK) 290 mii->mii_media_status |= IFM_ACTIVE; 291 292 bmcr = PHY_READ(sc, MII_BMCR); 293 if (bmcr & BMCR_ISO) { 294 mii->mii_media_active |= IFM_NONE; 295 mii->mii_media_status = 0; 296 return; 297 } 298 299 if (bmcr & BMCR_LOOP) 300 mii->mii_media_active |= IFM_LOOP; 301 302 if (bmcr & BMCR_AUTOEN) { 303 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 304 if ((bmsr & BMSR_ACOMP) == 0) { 305 /* Erg, still trying, I guess... */ 306 mii->mii_media_active |= IFM_NONE; 307 return; 308 } 309 if (csr & CSR_SPEED) 310 mii->mii_media_active |= IFM_100_TX; 311 else 312 mii->mii_media_active |= IFM_10_T; 313 if (csr & CSR_DUPLEX) 314 mii->mii_media_active |= IFM_FDX; 315 } else 316 mii->mii_media_active = ife->ifm_media; 317} 318 319static void 320lxtphy_set_tp(sc) 321 struct mii_softc *sc; 322{ 323 int cfg; 324 325 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 326 cfg &= ~CONFIG_100BASEFX; 327 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 328} 329 330static void 331lxtphy_set_fx(sc) 332 struct mii_softc *sc; 333{ 334 int cfg; 335 336 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 337 cfg |= CONFIG_100BASEFX; 338 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 339} 340 341