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 #include <sys/cdefs.h> 71 __FBSDID("$FreeBSD$"); 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/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 97 static int lxtphy_probe(device_t); 98 static int lxtphy_attach(device_t); 99 100 static 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 }; 108 109 static devclass_t lxtphy_devclass; 110 111 static driver_t lxtphy_driver = { 112 "lxtphy", 113 lxtphy_methods, 114 sizeof(struct mii_softc) 115 }; 116 117 DRIVER_MODULE(lxtphy, miibus, lxtphy_driver, lxtphy_devclass, 0, 0); 118 119 static int lxtphy_service(struct mii_softc *, struct mii_data *, int); 120 static void lxtphy_status(struct mii_softc *); 121 static void lxtphy_set_tp(struct mii_softc *); 122 static void lxtphy_set_fx(struct mii_softc *); 123 124 static int 125 lxtphy_probe(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_xxLEVEL1 && 132 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) { 133 device_set_desc(dev, MII_STR_xxLEVEL1_LXT970); 134 } else 135 return (ENXIO); 136 137 return (0); 138 } 139 140 static int 141 lxtphy_attach(device_t dev) 142 { 143 struct mii_softc *sc; 144 struct mii_attach_args *ma; 145 struct mii_data *mii; 146 147 sc = device_get_softc(dev); 148 ma = device_get_ivars(dev); 149 sc->mii_dev = device_get_parent(dev); 150 mii = device_get_softc(sc->mii_dev); 151 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 152 153 sc->mii_inst = mii->mii_instance; 154 sc->mii_phy = ma->mii_phyno; 155 sc->mii_service = lxtphy_service; 156 sc->mii_pdata = mii; 157 sc->mii_flags |= MIIF_NOISOLATE; 158 159 mii_phy_reset(sc); 160 161 mii->mii_instance++; 162 163 sc->mii_capabilities = 164 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 165 device_printf(dev, " "); 166 167 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 168 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 169 BMCR_ISO); 170 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 171 BMCR_S100); 172 printf("100baseFX, "); 173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 174 BMCR_S100|BMCR_FDX); 175 printf("100baseFX-FDX, "); 176 #undef ADD 177 178 mii_add_media(sc); 179 printf("\n"); 180 181 MIIBUS_MEDIAINIT(sc->mii_dev); 182 return(0); 183 } 184 185 static int 186 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 187 { 188 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 189 int reg; 190 191 switch (cmd) { 192 case MII_POLLSTAT: 193 /* 194 * If we're not polling our PHY instance, just return. 195 */ 196 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 197 return (0); 198 break; 199 200 case MII_MEDIACHG: 201 /* 202 * If the media indicates a different PHY instance, 203 * isolate ourselves. 204 */ 205 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 206 reg = PHY_READ(sc, MII_BMCR); 207 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 208 return (0); 209 } 210 211 /* 212 * If the interface is not up, don't do anything. 213 */ 214 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 215 break; 216 217 switch (IFM_SUBTYPE(ife->ifm_media)) { 218 case IFM_AUTO: 219 /* 220 * If we're already in auto mode, just return. 221 */ 222 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 223 return (0); 224 225 lxtphy_set_tp(sc); 226 227 (void) mii_phy_auto(sc); 228 break; 229 case IFM_100_T4: 230 /* 231 * XXX Not supported as a manual setting right now. 232 */ 233 return (EINVAL); 234 235 case IFM_100_FX: 236 lxtphy_set_fx(sc); 237 /* XXX: fall though intentional ?? */ 238 default: 239 /* 240 * BMCR data is stored in the ifmedia entry. 241 */ 242 PHY_WRITE(sc, MII_ANAR, 243 mii_anar(ife->ifm_media)); 244 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 245 } 246 break; 247 248 case MII_TICK: 249 /* 250 * If we're not currently selected, just return. 251 */ 252 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 253 return (0); 254 if (mii_phy_tick(sc) == EJUSTRETURN) 255 return (0); 256 break; 257 } 258 259 /* Update the media status. */ 260 lxtphy_status(sc); 261 262 /* Callback if something changed. */ 263 mii_phy_update(sc, cmd); 264 return (0); 265 } 266 267 static void 268 lxtphy_status(struct mii_softc *sc) 269 { 270 struct mii_data *mii = sc->mii_pdata; 271 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 272 int bmcr, bmsr, csr; 273 274 mii->mii_media_status = IFM_AVALID; 275 mii->mii_media_active = IFM_ETHER; 276 277 /* 278 * Get link status from the CSR; we need to read the CSR 279 * for media type anyhow, and the link status in the CSR 280 * doens't latch, so fewer register reads are required. 281 */ 282 csr = PHY_READ(sc, MII_LXTPHY_CSR); 283 if (csr & CSR_LINK) 284 mii->mii_media_status |= IFM_ACTIVE; 285 286 bmcr = PHY_READ(sc, MII_BMCR); 287 if (bmcr & BMCR_ISO) { 288 mii->mii_media_active |= IFM_NONE; 289 mii->mii_media_status = 0; 290 return; 291 } 292 293 if (bmcr & BMCR_LOOP) 294 mii->mii_media_active |= IFM_LOOP; 295 296 if (bmcr & BMCR_AUTOEN) { 297 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 298 if ((bmsr & BMSR_ACOMP) == 0) { 299 /* Erg, still trying, I guess... */ 300 mii->mii_media_active |= IFM_NONE; 301 return; 302 } 303 if (csr & CSR_SPEED) 304 mii->mii_media_active |= IFM_100_TX; 305 else 306 mii->mii_media_active |= IFM_10_T; 307 if (csr & CSR_DUPLEX) 308 mii->mii_media_active |= IFM_FDX; 309 } else 310 mii->mii_media_active = ife->ifm_media; 311 } 312 313 static void 314 lxtphy_set_tp(struct mii_softc *sc) 315 { 316 int cfg; 317 318 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 319 cfg &= ~CONFIG_100BASEFX; 320 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 321 } 322 323 static void 324 lxtphy_set_fx(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