lxtphy.c revision 1.22
1 /* $NetBSD: lxtphy.c,v 1.22 2001/05/17 17:29:54 drochner 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 int 110 lxtphymatch(parent, match, aux) 111 struct device *parent; 112 struct cfdata *match; 113 void *aux; 114 { 115 struct mii_attach_args *ma = aux; 116 117 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 && 118 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) 119 return (10); 120 121 return (0); 122 } 123 124 void 125 lxtphyattach(parent, self, aux) 126 struct device *parent, *self; 127 void *aux; 128 { 129 struct mii_softc *sc = (struct mii_softc *)self; 130 struct mii_attach_args *ma = aux; 131 struct mii_data *mii = ma->mii_data; 132 133 printf(": %s, rev. %d\n", MII_STR_xxLEVEL1_LXT970, 134 MII_REV(ma->mii_id2)); 135 136 sc->mii_inst = mii->mii_instance; 137 sc->mii_phy = ma->mii_phyno; 138 sc->mii_funcs = &lxtphy_funcs; 139 sc->mii_pdata = mii; 140 sc->mii_flags = mii->mii_flags | ma->mii_flags; 141 142 PHY_RESET(sc); 143 144 sc->mii_capabilities = 145 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 146 printf("%s: ", sc->mii_dev.dv_xname); 147 148 if (sc->mii_flags & MIIF_HAVEFIBER) { 149 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 151 MII_MEDIA_100_TX); 152 printf("100baseFX, "); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 154 MII_MEDIA_100_TX_FDX); 155 printf("100baseFX-FDX, "); 156 #undef ADD 157 } 158 159 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 160 printf("no media present"); 161 else 162 mii_phy_add_media(sc); 163 printf("\n"); 164 } 165 166 int 167 lxtphy_service(sc, mii, cmd) 168 struct mii_softc *sc; 169 struct mii_data *mii; 170 int cmd; 171 { 172 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 173 int reg; 174 175 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 176 return (ENXIO); 177 178 switch (cmd) { 179 case MII_POLLSTAT: 180 /* 181 * If we're not polling our PHY instance, just return. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 184 return (0); 185 break; 186 187 case MII_MEDIACHG: 188 /* 189 * If the media indicates a different PHY instance, 190 * isolate ourselves. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 193 reg = PHY_READ(sc, MII_BMCR); 194 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 195 return (0); 196 } 197 198 /* 199 * If the interface is not up, don't do anything. 200 */ 201 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 202 break; 203 204 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 205 lxtphy_set_fx(sc); 206 else 207 lxtphy_set_tp(sc); 208 209 mii_phy_setmedia(sc); 210 break; 211 212 case MII_TICK: 213 /* 214 * If we're not currently selected, just return. 215 */ 216 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 217 return (0); 218 219 if (mii_phy_tick(sc) == EJUSTRETURN) 220 return (0); 221 break; 222 223 case MII_DOWN: 224 mii_phy_down(sc); 225 return (0); 226 } 227 228 /* Update the media status. */ 229 mii_phy_status(sc); 230 231 /* Callback if something changed. */ 232 mii_phy_update(sc, cmd); 233 return (0); 234 } 235 236 void 237 lxtphy_status(sc) 238 struct mii_softc *sc; 239 { 240 struct mii_data *mii = sc->mii_pdata; 241 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 242 int bmcr, bmsr, csr; 243 244 mii->mii_media_status = IFM_AVALID; 245 mii->mii_media_active = IFM_ETHER; 246 247 /* 248 * Get link status from the CSR; we need to read the CSR 249 * for media type anyhow, and the link status in the CSR 250 * doens't latch, so fewer register reads are required. 251 */ 252 csr = PHY_READ(sc, MII_LXTPHY_CSR); 253 if (csr & CSR_LINK) 254 mii->mii_media_status |= IFM_ACTIVE; 255 256 bmcr = PHY_READ(sc, MII_BMCR); 257 if (bmcr & BMCR_ISO) { 258 mii->mii_media_active |= IFM_NONE; 259 mii->mii_media_status = 0; 260 return; 261 } 262 263 if (bmcr & BMCR_LOOP) 264 mii->mii_media_active |= IFM_LOOP; 265 266 if (bmcr & BMCR_AUTOEN) { 267 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 268 if ((bmsr & BMSR_ACOMP) == 0) { 269 /* Erg, still trying, I guess... */ 270 mii->mii_media_active |= IFM_NONE; 271 return; 272 } 273 if (csr & CSR_SPEED) 274 mii->mii_media_active |= IFM_100_TX; 275 else 276 mii->mii_media_active |= IFM_10_T; 277 if (csr & CSR_DUPLEX) 278 mii->mii_media_active |= IFM_FDX; 279 } else 280 mii->mii_media_active = ife->ifm_media; 281 } 282 283 void 284 lxtphy_reset(sc) 285 struct mii_softc *sc; 286 { 287 288 mii_phy_reset(sc); 289 PHY_WRITE(sc, MII_LXTPHY_IER, 290 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 291 } 292 293 static void 294 lxtphy_set_tp(sc) 295 struct mii_softc *sc; 296 { 297 int cfg; 298 299 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 300 cfg &= ~CONFIG_100BASEFX; 301 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 302 } 303 304 static void 305 lxtphy_set_fx(sc) 306 struct mii_softc *sc; 307 { 308 int cfg; 309 310 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 311 cfg |= CONFIG_100BASEFX; 312 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 313 } 314
Indexes created Tue Oct 21 08:09:48 GMT 2025