1 /* $NetBSD: lxtphy.c,v 1.26 2001/11/13 07:41:36 lukem 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 1.26 2001/11/13 07:41:36 lukem 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_phydesc lxtphys[] = { 114 { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970, 115 MII_STR_xxLEVEL1_LXT970 }, 116 117 { 0, 0, 118 NULL }, 119 }; 120 121 int 122 lxtphymatch(struct device *parent, struct cfdata *match, void *aux) 123 { 124 struct mii_attach_args *ma = aux; 125 126 if (mii_phy_match(ma, lxtphys) != NULL) 127 return (10); 128 129 return (0); 130 } 131 132 void 133 lxtphyattach(struct device *parent, struct device *self, void *aux) 134 { 135 struct mii_softc *sc = (struct mii_softc *)self; 136 struct mii_attach_args *ma = aux; 137 struct mii_data *mii = ma->mii_data; 138 const struct mii_phydesc *mpd; 139 140 mpd = mii_phy_match(ma, lxtphys); 141 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 142 143 sc->mii_inst = mii->mii_instance; 144 sc->mii_phy = ma->mii_phyno; 145 sc->mii_funcs = &lxtphy_funcs; 146 sc->mii_pdata = mii; 147 sc->mii_flags = mii->mii_flags | ma->mii_flags; 148 sc->mii_anegticks = 5; 149 150 PHY_RESET(sc); 151 152 sc->mii_capabilities = 153 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 154 printf("%s: ", sc->mii_dev.dv_xname); 155 156 if (sc->mii_flags & MIIF_HAVEFIBER) { 157 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, 0, sc->mii_inst), 159 MII_MEDIA_100_TX); 160 printf("100baseFX, "); 161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_FX, IFM_FDX, sc->mii_inst), 162 MII_MEDIA_100_TX_FDX); 163 printf("100baseFX-FDX, "); 164 #undef ADD 165 } 166 167 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 168 printf("no media present"); 169 else 170 mii_phy_add_media(sc); 171 printf("\n"); 172 } 173 174 int 175 lxtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 176 { 177 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 178 int reg; 179 180 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 181 return (ENXIO); 182 183 switch (cmd) { 184 case MII_POLLSTAT: 185 /* 186 * If we're not polling our PHY instance, just return. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 189 return (0); 190 break; 191 192 case MII_MEDIACHG: 193 /* 194 * If the media indicates a different PHY instance, 195 * isolate ourselves. 196 */ 197 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 198 reg = PHY_READ(sc, MII_BMCR); 199 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 200 return (0); 201 } 202 203 /* 204 * If the interface is not up, don't do anything. 205 */ 206 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 207 break; 208 209 if (IFM_SUBTYPE(ife->ifm_media) == IFM_100_FX) 210 lxtphy_set_fx(sc); 211 else 212 lxtphy_set_tp(sc); 213 214 mii_phy_setmedia(sc); 215 break; 216 217 case MII_TICK: 218 /* 219 * If we're not currently selected, just return. 220 */ 221 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 222 return (0); 223 224 if (mii_phy_tick(sc) == EJUSTRETURN) 225 return (0); 226 break; 227 228 case MII_DOWN: 229 mii_phy_down(sc); 230 return (0); 231 } 232 233 /* Update the media status. */ 234 mii_phy_status(sc); 235 236 /* Callback if something changed. */ 237 mii_phy_update(sc, cmd); 238 return (0); 239 } 240 241 void 242 lxtphy_status(struct mii_softc *sc) 243 { 244 struct mii_data *mii = sc->mii_pdata; 245 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 246 int bmcr, bmsr, csr; 247 248 mii->mii_media_status = IFM_AVALID; 249 mii->mii_media_active = IFM_ETHER; 250 251 /* 252 * Get link status from the CSR; we need to read the CSR 253 * for media type anyhow, and the link status in the CSR 254 * doens't latch, so fewer register reads are required. 255 */ 256 csr = PHY_READ(sc, MII_LXTPHY_CSR); 257 if (csr & CSR_LINK) 258 mii->mii_media_status |= IFM_ACTIVE; 259 260 bmcr = PHY_READ(sc, MII_BMCR); 261 if (bmcr & BMCR_ISO) { 262 mii->mii_media_active |= IFM_NONE; 263 mii->mii_media_status = 0; 264 return; 265 } 266 267 if (bmcr & BMCR_LOOP) 268 mii->mii_media_active |= IFM_LOOP; 269 270 if (bmcr & BMCR_AUTOEN) { 271 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 272 if ((bmsr & BMSR_ACOMP) == 0) { 273 /* Erg, still trying, I guess... */ 274 mii->mii_media_active |= IFM_NONE; 275 return; 276 } 277 if (csr & CSR_SPEED) 278 mii->mii_media_active |= IFM_100_TX; 279 else 280 mii->mii_media_active |= IFM_10_T; 281 if (csr & CSR_DUPLEX) 282 mii->mii_media_active |= IFM_FDX; 283 } else 284 mii->mii_media_active = ife->ifm_media; 285 } 286 287 void 288 lxtphy_reset(struct mii_softc *sc) 289 { 290 291 mii_phy_reset(sc); 292 PHY_WRITE(sc, MII_LXTPHY_IER, 293 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN); 294 } 295 296 static void 297 lxtphy_set_tp(struct mii_softc *sc) 298 { 299 int cfg; 300 301 cfg = PHY_READ(sc, MII_LXTPHY_CONFIG); 302 cfg &= ~CONFIG_100BASEFX; 303 PHY_WRITE(sc, MII_LXTPHY_CONFIG, cfg); 304 } 305 306 static void 307 lxtphy_set_fx(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