lxtphy.c revision 1.21.2.2
1 /* $NetBSD: lxtphy.c,v 1.21.2.2 2001/09/21 22:35:49 nathanw 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(struct device *, struct cfdata *, void *); 92 void lxtphyattach(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(struct mii_softc *, struct mii_data *, int); 100 void lxtphy_status(struct mii_softc *); 101 void lxtphy_reset(struct mii_softc *); 102 103 static void lxtphy_set_tp(struct mii_softc *); 104 static void lxtphy_set_fx(struct mii_softc *); 105 106 const struct mii_phy_funcs lxtphy_funcs = { 107 lxtphy_service, lxtphy_status, lxtphy_reset, 108 }; 109 110 const struct mii_phydesc lxtphys[] = { 111 { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, 112 MII_STR_xxLEVEL1_LXT970 }, 113 114 { 0, 0, 115 NULL }, 116 }; 117 118 int 119 lxtphymatch(struct device *parent, struct cfdata *match, void *aux) 120 { 121 struct mii_attach_args *ma = aux; 122 123 if (mii_phy_match(ma, lxtphys) != NULL) 124 return (10); 125 126 return (0); 127 } 128 129 void 130 lxtphyattach(struct device *parent, struct device *self, void *aux) 131 { 132 struct mii_softc *sc = (struct mii_softc *)self; 133 struct mii_attach_args *ma = aux; 134 struct mii_data *mii = ma->mii_data; 135 const struct mii_phydesc *mpd; 136 137 mpd = mii_phy_match(ma, lxtphys); 138 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 139 140 sc->mii_inst = mii->mii_instance; 141 sc->mii_phy = ma->mii_phyno; 142 sc->mii_funcs = &lxtphy_funcs; 143 sc->mii_pdata = mii; 144 sc->mii_flags = mii->mii_flags | ma->mii_flags; 145 sc->mii_anegticks = 5; 146 147 PHY_RESET(sc); 148 149 sc->mii_capabilities = 150 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 151 printf("%s: ", sc->mii_dev.dv_xname); 152 153 if (sc->mii_flags & MIIF_HAVEFIBER) { 154 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 156 MII_MEDIA_100_TX); 157 printf("100baseFX, "); 158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 159 MII_MEDIA_100_TX_FDX); 160 printf("100baseFX-FDX, "); 161 #undef ADD 162 } 163 164 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 165 printf("no media present"); 166 else 167 mii_phy_add_media(sc); 168 printf("\n"); 169 } 170 171 int 172 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 173 { 174 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 175 int reg; 176 177 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 178 return (ENXIO); 179 180 switch (cmd) { 181 case MII_POLLSTAT: 182 /* 183 * If we're not polling our PHY instance, just return. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 186 return (0); 187 break; 188 189 case MII_MEDIACHG: 190 /* 191 * If the media indicates a different PHY instance, 192 * isolate ourselves. 193 */ 194 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 195 reg = PHY_READ(sc, MII_BMCR); 196 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 197 return (0); 198 } 199 200 /* 201 * If the interface is not up, don't do anything. 202 */ 203 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 204 break; 205 206 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 207 lxtphy_set_fx(sc); 208 else 209 lxtphy_set_tp(sc); 210 211 mii_phy_setmedia(sc); 212 break; 213 214 case MII_TICK: 215 /* 216 * If we're not currently selected, just return. 217 */ 218 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 219 return (0); 220 221 if (mii_phy_tick(sc) == EJUSTRETURN) 222 return (0); 223 break; 224 225 case MII_DOWN: 226 mii_phy_down(sc); 227 return (0); 228 } 229 230 /* Update the media status. */ 231 mii_phy_status(sc); 232 233 /* Callback if something changed. */ 234 mii_phy_update(sc, cmd); 235 return (0); 236 } 237 238 void 239 lxtphy_status(struct mii_softc *sc) 240 { 241 struct mii_data *mii = sc->mii_pdata; 242 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 243 int bmcr, bmsr, csr; 244 245 mii->mii_media_status = IFM_AVALID; 246 mii->mii_media_active = IFM_ETHER; 247 248 /* 249 * Get link status from the CSR; we need to read the CSR 250 * for media type anyhow, and the link status in the CSR 251 * doens't latch, so fewer register reads are required. 252 */ 253 csr = PHY_READ(sc, MII_LXTPHY_CSR); 254 if (csr & CSR_LINK) 255 mii->mii_media_status |= IFM_ACTIVE; 256 257 bmcr = PHY_READ(sc, MII_BMCR); 258 if (bmcr & BMCR_ISO) { 259 mii->mii_media_active |= IFM_NONE; 260 mii->mii_media_status = 0; 261 return; 262 } 263 264 if (bmcr & BMCR_LOOP) 265 mii->mii_media_active |= IFM_LOOP; 266 267 if (bmcr & BMCR_AUTOEN) { 268 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 269 if ((bmsr & BMSR_ACOMP) == 0) { 270 /* Erg, still trying, I guess... */ 271 mii->mii_media_active |= IFM_NONE; 272 return; 273 } 274 if (csr & CSR_SPEED) 275 mii->mii_media_active |= IFM_100_TX; 276 else 277 mii->mii_media_active |= IFM_10_T; 278 if (csr & CSR_DUPLEX) 279 mii->mii_media_active |= IFM_FDX; 280 } else 281 mii->mii_media_active = ife->ifm_media; 282 } 283 284 void 285 lxtphy_reset(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(struct mii_softc *sc) 295 { 296 int cfg; 297 298 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 299 cfg &= ~CONFIG_100BASEFX; 300 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 301 } 302 303 static void 304 lxtphy_set_fx(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
Indexes created Mon Oct 20 20:10:13 GMT 2025