1 /* $NetBSD: lxtphy.c,v 1.28 2002/03/25 20:51:25 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/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: lxtphy.c,v 1.28 2002/03/25 20:51:25 thorpej Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/device.h> 81 #include <sys/malloc.h> 82 #include <sys/socket.h> 83 #include <sys/errno.h> 84 85 #include <net/if.h> 86 #include <net/if_media.h> 87 88 #include <dev/mii/mii.h> 89 #include <dev/mii/miivar.h> 90 #include <dev/mii/miidevs.h> 91 92 #include <dev/mii/lxtphyreg.h> 93 94 int lxtphymatch(struct device *, struct cfdata *, void *); 95 void lxtphyattach(struct device *, struct device *, void *); 96 97 struct cfattach lxtphy_ca = { 98 sizeof(struct mii_softc), lxtphymatch, lxtphyattach, mii_phy_detach, 99 mii_phy_activate 100 }; 101 102 int lxtphy_service(struct mii_softc *, struct mii_data *, int); 103 void lxtphy_status(struct mii_softc *); 104 void lxtphy_reset(struct mii_softc *); 105 106 static void lxtphy_set_tp(struct mii_softc *); 107 static void lxtphy_set_fx(struct mii_softc *); 108 109 const struct mii_phy_funcs lxtphy_funcs = { 110 lxtphy_service, lxtphy_status, lxtphy_reset, 111 }; 112 113 const struct mii_phy_funcs lxtphy971_funcs = { 114 lxtphy_service, ukphy_status, lxtphy_reset, 115 }; 116 117 const struct mii_phydesc lxtphys[] = { 118 { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, 119 MII_STR_xxLEVEL1_LXT970 }, 120 121 { MII_OUI_LEVEL1, MII_MODEL_LEVEL1_LXT971, 122 MII_STR_LEVEL1_LXT971 }, 123 124 { 0, 0, 125 NULL }, 126 }; 127 128 int 129 lxtphymatch(struct device *parent, struct cfdata *match, void *aux) 130 { 131 struct mii_attach_args *ma = aux; 132 133 if (mii_phy_match(ma, lxtphys) != NULL) 134 return (10); 135 136 return (0); 137 } 138 139 void 140 lxtphyattach(struct device *parent, struct device *self, void *aux) 141 { 142 struct mii_softc *sc = (struct mii_softc *)self; 143 struct mii_attach_args *ma = aux; 144 struct mii_data *mii = ma->mii_data; 145 const struct mii_phydesc *mpd; 146 147 mpd = mii_phy_match(ma, lxtphys); 148 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 149 150 sc->mii_inst = mii->mii_instance; 151 sc->mii_phy = ma->mii_phyno; 152 if (mpd->mpd_model == MII_MODEL_LEVEL1_LXT971) 153 sc->mii_funcs = &lxtphy971_funcs; 154 else 155 sc->mii_funcs = &lxtphy_funcs; 156 sc->mii_pdata = mii; 157 sc->mii_flags = ma->mii_flags; 158 sc->mii_anegticks = 5; 159 160 PHY_RESET(sc); 161 162 sc->mii_capabilities = 163 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 164 printf("%s: ", sc->mii_dev.dv_xname); 165 166 if (sc->mii_flags & MIIF_HAVEFIBER) { 167 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 168 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 169 MII_MEDIA_100_TX); 170 printf("100baseFX, "); 171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 172 MII_MEDIA_100_TX_FDX); 173 printf("100baseFX-FDX, "); 174 #undef ADD 175 } 176 177 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 178 printf("no media present"); 179 else 180 mii_phy_add_media(sc); 181 printf("\n"); 182 } 183 184 int 185 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 186 { 187 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 188 int reg; 189 190 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 191 return (ENXIO); 192 193 switch (cmd) { 194 case MII_POLLSTAT: 195 /* 196 * If we're not polling our PHY instance, just return. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 199 return (0); 200 break; 201 202 case MII_MEDIACHG: 203 /* 204 * If the media indicates a different PHY instance, 205 * isolate ourselves. 206 */ 207 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 208 reg = PHY_READ(sc, MII_BMCR); 209 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 210 return (0); 211 } 212 213 /* 214 * If the interface is not up, don't do anything. 215 */ 216 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 217 break; 218 219 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 220 lxtphy_set_fx(sc); 221 else 222 lxtphy_set_tp(sc); 223 224 mii_phy_setmedia(sc); 225 break; 226 227 case MII_TICK: 228 /* 229 * If we're not currently selected, just return. 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 232 return (0); 233 234 if (mii_phy_tick(sc) == EJUSTRETURN) 235 return (0); 236 break; 237 238 case MII_DOWN: 239 mii_phy_down(sc); 240 return (0); 241 } 242 243 /* Update the media status. */ 244 mii_phy_status(sc); 245 246 /* Callback if something changed. */ 247 mii_phy_update(sc, cmd); 248 return (0); 249 } 250 251 void 252 lxtphy_status(struct mii_softc *sc) 253 { 254 struct mii_data *mii = sc->mii_pdata; 255 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 256 int bmcr, bmsr, csr; 257 258 mii->mii_media_status = IFM_AVALID; 259 mii->mii_media_active = IFM_ETHER; 260 261 /* 262 * Get link status from the CSR; we need to read the CSR 263 * for media type anyhow, and the link status in the CSR 264 * doens't latch, so fewer register reads are required. 265 */ 266 csr = PHY_READ(sc, MII_LXTPHY_CSR); 267 if (csr & CSR_LINK) 268 mii->mii_media_status |= IFM_ACTIVE; 269 270 bmcr = PHY_READ(sc, MII_BMCR); 271 if (bmcr & BMCR_ISO) { 272 mii->mii_media_active |= IFM_NONE; 273 mii->mii_media_status = 0; 274 return; 275 } 276 277 if (bmcr & BMCR_LOOP) 278 mii->mii_media_active |= IFM_LOOP; 279 280 if (bmcr & BMCR_AUTOEN) { 281 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 282 if ((bmsr & BMSR_ACOMP) == 0) { 283 /* Erg, still trying, I guess... */ 284 mii->mii_media_active |= IFM_NONE; 285 return; 286 } 287 if (csr & CSR_SPEED) 288 mii->mii_media_active |= IFM_100_TX; 289 else 290 mii->mii_media_active |= IFM_10_T; 291 if (csr & CSR_DUPLEX) 292 mii->mii_media_active |= IFM_FDX; 293 } else 294 mii->mii_media_active = ife->ifm_media; 295 } 296 297 void 298 lxtphy_reset(struct mii_softc *sc) 299 { 300 301 mii_phy_reset(sc); 302 PHY_WRITE(sc, MII_LXTPHY_IER, 303 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 304 } 305 306 static void 307 lxtphy_set_tp(struct mii_softc *sc) 308 { 309 int cfg; 310 311 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 312 cfg &= ~CONFIG_100BASEFX; 313 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 314 } 315 316 static void 317 lxtphy_set_fx(struct mii_softc *sc) 318 { 319 int cfg; 320 321 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 322 cfg |= CONFIG_100BASEFX; 323 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 324 } 325