1 /* $NetBSD: lxtphy.c,v 1.24 2001/06/02 21:39:40 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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 Level One's LXT-970 ethernet 10/100 PHY 71 * datasheet from www.level1.com 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/device.h> 78 #include <sys/malloc.h> 79 #include <sys/socket.h> 80 #include <sys/errno.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/lxtphyreg.h> 90 91 int lxtphymatch __P((struct device *, struct cfdata *, void *)); 92 void lxtphyattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach lxtphy_ca = { 95 sizeof(struct mii_softc), lxtphymatch, lxtphyattach, mii_phy_detach, 96 mii_phy_activate 97 }; 98 99 int lxtphy_service __P((struct mii_softc *, struct mii_data *, int)); 100 void lxtphy_status __P((struct mii_softc *)); 101 void lxtphy_reset __P((struct mii_softc *)); 102 static void lxtphy_set_tp __P((struct mii_softc *)); 103 static void lxtphy_set_fx __P((struct mii_softc *)); 104 105 const struct mii_phy_funcs lxtphy_funcs = { 106 lxtphy_service, lxtphy_status, lxtphy_reset, 107 }; 108 109 const struct mii_phydesc lxtphys[] = { 110 { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, 111 MII_STR_xxLEVEL1_LXT970 }, 112 113 { 0, 0, 114 NULL }, 115 }; 116 117 int 118 lxtphymatch(parent, match, aux) 119 struct device *parent; 120 struct cfdata *match; 121 void *aux; 122 { 123 struct mii_attach_args *ma = aux; 124 125 if (mii_phy_match(ma, lxtphys) != NULL) 126 return (10); 127 128 return (0); 129 } 130 131 void 132 lxtphyattach(parent, self, aux) 133 struct device *parent, *self; 134 void *aux; 135 { 136 struct mii_softc *sc = (struct mii_softc *)self; 137 struct mii_attach_args *ma = aux; 138 struct mii_data *mii = ma->mii_data; 139 const struct mii_phydesc *mpd; 140 141 mpd = mii_phy_match(ma, lxtphys); 142 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 143 144 sc->mii_inst = mii->mii_instance; 145 sc->mii_phy = ma->mii_phyno; 146 sc->mii_funcs = &lxtphy_funcs; 147 sc->mii_pdata = mii; 148 sc->mii_flags = mii->mii_flags | ma->mii_flags; 149 sc->mii_anegticks = 5; 150 151 PHY_RESET(sc); 152 153 sc->mii_capabilities = 154 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 155 printf("%s: ", sc->mii_dev.dv_xname); 156 157 if (sc->mii_flags & MIIF_HAVEFIBER) { 158 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 160 MII_MEDIA_100_TX); 161 printf("100baseFX, "); 162 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 163 MII_MEDIA_100_TX_FDX); 164 printf("100baseFX-FDX, "); 165 #undef ADD 166 } 167 168 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 169 printf("no media present"); 170 else 171 mii_phy_add_media(sc); 172 printf("\n"); 173 } 174 175 int 176 lxtphy_service(sc, mii, cmd) 177 struct mii_softc *sc; 178 struct mii_data *mii; 179 int cmd; 180 { 181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 182 int reg; 183 184 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 185 return (ENXIO); 186 187 switch (cmd) { 188 case MII_POLLSTAT: 189 /* 190 * If we're not polling our PHY instance, just return. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 193 return (0); 194 break; 195 196 case MII_MEDIACHG: 197 /* 198 * If the media indicates a different PHY instance, 199 * isolate ourselves. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 202 reg = PHY_READ(sc, MII_BMCR); 203 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 204 return (0); 205 } 206 207 /* 208 * If the interface is not up, don't do anything. 209 */ 210 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 211 break; 212 213 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 214 lxtphy_set_fx(sc); 215 else 216 lxtphy_set_tp(sc); 217 218 mii_phy_setmedia(sc); 219 break; 220 221 case MII_TICK: 222 /* 223 * If we're not currently selected, just return. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 226 return (0); 227 228 if (mii_phy_tick(sc) == EJUSTRETURN) 229 return (0); 230 break; 231 232 case MII_DOWN: 233 mii_phy_down(sc); 234 return (0); 235 } 236 237 /* Update the media status. */ 238 mii_phy_status(sc); 239 240 /* Callback if something changed. */ 241 mii_phy_update(sc, cmd); 242 return (0); 243 } 244 245 void 246 lxtphy_status(sc) 247 struct mii_softc *sc; 248 { 249 struct mii_data *mii = sc->mii_pdata; 250 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 251 int bmcr, bmsr, csr; 252 253 mii->mii_media_status = IFM_AVALID; 254 mii->mii_media_active = IFM_ETHER; 255 256 /* 257 * Get link status from the CSR; we need to read the CSR 258 * for media type anyhow, and the link status in the CSR 259 * doens't latch, so fewer register reads are required. 260 */ 261 csr = PHY_READ(sc, MII_LXTPHY_CSR); 262 if (csr & CSR_LINK) 263 mii->mii_media_status |= IFM_ACTIVE; 264 265 bmcr = PHY_READ(sc, MII_BMCR); 266 if (bmcr & BMCR_ISO) { 267 mii->mii_media_active |= IFM_NONE; 268 mii->mii_media_status = 0; 269 return; 270 } 271 272 if (bmcr & BMCR_LOOP) 273 mii->mii_media_active |= IFM_LOOP; 274 275 if (bmcr & BMCR_AUTOEN) { 276 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 277 if ((bmsr & BMSR_ACOMP) == 0) { 278 /* Erg, still trying, I guess... */ 279 mii->mii_media_active |= IFM_NONE; 280 return; 281 } 282 if (csr & CSR_SPEED) 283 mii->mii_media_active |= IFM_100_TX; 284 else 285 mii->mii_media_active |= IFM_10_T; 286 if (csr & CSR_DUPLEX) 287 mii->mii_media_active |= IFM_FDX; 288 } else 289 mii->mii_media_active = ife->ifm_media; 290 } 291 292 void 293 lxtphy_reset(sc) 294 struct mii_softc *sc; 295 { 296 297 mii_phy_reset(sc); 298 PHY_WRITE(sc, MII_LXTPHY_IER, 299 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 300 } 301 302 static void 303 lxtphy_set_tp(sc) 304 struct mii_softc *sc; 305 { 306 int cfg; 307 308 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 309 cfg &= ~CONFIG_100BASEFX; 310 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 311 } 312 313 static void 314 lxtphy_set_fx(sc) 315 struct mii_softc *sc; 316 { 317 int cfg; 318 319 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 320 cfg |= CONFIG_100BASEFX; 321 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 322 } 323