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 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 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/cdefs.h> 79 __FBSDID("$FreeBSD$"); 80 81 #include <sys/param.h> 82 #include <sys/systm.h> 83 #include <sys/kernel.h> 84 #include <sys/socket.h> 85 #include <sys/errno.h> 86 #include <sys/module.h> 87 #include <sys/bus.h> 88 89 #include <net/if.h> 90 #include <net/if_media.h> 91 92 #include <dev/mii/mii.h> 93 #include <dev/mii/miivar.h> 94 #include "miidevs.h" 95 96 #include <dev/mii/lxtphyreg.h> 97 98 #include "miibus_if.h" 99 100 static int lxtphy_probe(device_t); 101 static int lxtphy_attach(device_t); 102 103 static device_method_t lxtphy_methods[] = { 104 /* device interface */ 105 DEVMETHOD(device_probe, lxtphy_probe), 106 DEVMETHOD(device_attach, lxtphy_attach), 107 DEVMETHOD(device_detach, mii_phy_detach), 108 DEVMETHOD(device_shutdown, bus_generic_shutdown), 109 { 0, 0 } 110 }; 111 112 static devclass_t lxtphy_devclass; 113 114 static driver_t lxtphy_driver = { 115 "lxtphy", 116 lxtphy_methods, 117 sizeof(struct mii_softc) 118 }; 119 120 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 121 122 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 123 static void lxtphy_status(struct mii_softc *); 124 static void lxtphy_set_tp(struct mii_softc *); 125 static void lxtphy_set_fx(struct mii_softc *); 126 127 static int 128 lxtphy_probe(dev) 129 device_t dev; 130 { 131 struct mii_attach_args *ma; 132 133 ma = device_get_ivars(dev); 134 135 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 && 136 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) { 137 device_set_desc(dev, MII_STR_xxLEVEL1_LXT970); 138 } else 139 return (ENXIO); 140 141 return (0); 142 } 143 144 static int 145 lxtphy_attach(dev) 146 device_t dev; 147 { 148 struct mii_softc *sc; 149 struct mii_attach_args *ma; 150 struct mii_data *mii; 151 152 sc = device_get_softc(dev); 153 ma = device_get_ivars(dev); 154 sc->mii_dev = device_get_parent(dev); 155 mii = device_get_softc(sc->mii_dev); 156 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 157 158 sc->mii_inst = mii->mii_instance; 159 sc->mii_phy = ma->mii_phyno; 160 sc->mii_service = lxtphy_service; 161 sc->mii_pdata = mii; 162 sc->mii_flags |= MIIF_NOISOLATE; 163 164 mii_phy_reset(sc); 165 166 mii->mii_instance++; 167 168 sc->mii_capabilities = 169 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 170 device_printf(dev, " "); 171 172 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 174 BMCR_ISO); 175 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 176 BMCR_S100); 177 printf("100baseFX, "); 178 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 179 BMCR_S100|BMCR_FDX); 180 printf("100baseFX-FDX, "); 181 #undef ADD 182 183 mii_add_media(sc); 184 printf("\n"); 185 186 MIIBUS_MEDIAINIT(sc->mii_dev); 187 return(0); 188 } 189 190 static int 191 lxtphy_service(sc, mii, cmd) 192 struct mii_softc *sc; 193 struct mii_data *mii; 194 int cmd; 195 { 196 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 197 int reg; 198 199 switch (cmd) { 200 case MII_POLLSTAT: 201 /* 202 * If we're not polling our PHY instance, just return. 203 */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 205 return (0); 206 break; 207 208 case MII_MEDIACHG: 209 /* 210 * If the media indicates a different PHY instance, 211 * isolate ourselves. 212 */ 213 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 214 reg = PHY_READ(sc, MII_BMCR); 215 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 216 return (0); 217 } 218 219 /* 220 * If the interface is not up, don't do anything. 221 */ 222 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 223 break; 224 225 switch (IFM_SUBTYPE(ife->ifm_media)) { 226 case IFM_AUTO: 227 /* 228 * If we're already in auto mode, just return. 229 */ 230 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 231 return (0); 232 233 lxtphy_set_tp(sc); 234 235 (void) mii_phy_auto(sc); 236 break; 237 case IFM_100_T4: 238 /* 239 * XXX Not supported as a manual setting right now. 240 */ 241 return (EINVAL); 242 243 case IFM_100_FX: 244 lxtphy_set_fx(sc); 245 /* XXX: fall though intentional ?? */ 246 default: 247 /* 248 * BMCR data is stored in the ifmedia entry. 249 */ 250 PHY_WRITE(sc, MII_ANAR, 251 mii_anar(ife->ifm_media)); 252 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 253 } 254 break; 255 256 case MII_TICK: 257 /* 258 * If we're not currently selected, just return. 259 */ 260 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 261 return (0); 262 if (mii_phy_tick(sc) == EJUSTRETURN) 263 return (0); 264 break; 265 } 266 267 /* Update the media status. */ 268 lxtphy_status(sc); 269 270 /* Callback if something changed. */ 271 mii_phy_update(sc, cmd); 272 return (0); 273 } 274 275 static void 276 lxtphy_status(sc) 277 struct mii_softc *sc; 278 { 279 struct mii_data *mii = sc->mii_pdata; 280 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 281 int bmcr, bmsr, csr; 282 283 mii->mii_media_status = IFM_AVALID; 284 mii->mii_media_active = IFM_ETHER; 285 286 /* 287 * Get link status from the CSR; we need to read the CSR 288 * for media type anyhow, and the link status in the CSR 289 * doens't latch, so fewer register reads are required. 290 */ 291 csr = PHY_READ(sc, MII_LXTPHY_CSR); 292 if (csr & CSR_LINK) 293 mii->mii_media_status |= IFM_ACTIVE; 294 295 bmcr = PHY_READ(sc, MII_BMCR); 296 if (bmcr & BMCR_ISO) { 297 mii->mii_media_active |= IFM_NONE; 298 mii->mii_media_status = 0; 299 return; 300 } 301 302 if (bmcr & BMCR_LOOP) 303 mii->mii_media_active |= IFM_LOOP; 304 305 if (bmcr & BMCR_AUTOEN) { 306 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 307 if ((bmsr & BMSR_ACOMP) == 0) { 308 /* Erg, still trying, I guess... */ 309 mii->mii_media_active |= IFM_NONE; 310 return; 311 } 312 if (csr & CSR_SPEED) 313 mii->mii_media_active |= IFM_100_TX; 314 else 315 mii->mii_media_active |= IFM_10_T; 316 if (csr & CSR_DUPLEX) 317 mii->mii_media_active |= IFM_FDX; 318 } else 319 mii->mii_media_active = ife->ifm_media; 320 } 321 322 static void 323 lxtphy_set_tp(sc) 324 struct mii_softc *sc; 325 { 326 int cfg; 327 328 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 329 cfg &= ~CONFIG_100BASEFX; 330 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 331 } 332 333 static void 334 lxtphy_set_fx(sc) 335 struct mii_softc *sc; 336 { 337 int cfg; 338 339 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 340 cfg |= CONFIG_100BASEFX; 341 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 342 } 343 344