inphy.c revision 1.10
1 /* $NetBSD: inphy.c,v 1.10 1998/11/05 04:08:02 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 Intel's i82555 ethernet 10/100 PHY 71 * Data Sheet available from www.intel.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 81 #include <net/if.h> 82 #include <net/if_media.h> 83 84 #include <dev/mii/mii.h> 85 #include <dev/mii/miivar.h> 86 #include <dev/mii/miidevs.h> 87 88 #include <dev/mii/inphyreg.h> 89 90 int inphymatch __P((struct device *, struct cfdata *, void *)); 91 void inphyattach __P((struct device *, struct device *, void *)); 92 93 struct cfattach inphy_ca = { 94 sizeof(struct mii_softc), inphymatch, inphyattach 95 }; 96 97 int inphy_service __P((struct mii_softc *, struct mii_data *, int)); 98 void inphy_status __P((struct mii_softc *)); 99 100 int 101 inphymatch(parent, match, aux) 102 struct device *parent; 103 struct cfdata *match; 104 void *aux; 105 { 106 struct mii_attach_args *ma = aux; 107 108 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL && 109 MII_MODEL(ma->mii_id2) == MII_MODEL_INTEL_I82555) 110 return (10); 111 112 return (0); 113 } 114 115 void 116 inphyattach(parent, self, aux) 117 struct device *parent, *self; 118 void *aux; 119 { 120 struct mii_softc *sc = (struct mii_softc *)self; 121 struct mii_attach_args *ma = aux; 122 struct mii_data *mii = ma->mii_data; 123 124 printf(": %s, rev. %d\n", MII_STR_INTEL_I82555, 125 MII_REV(ma->mii_id2)); 126 127 sc->mii_inst = mii->mii_instance; 128 sc->mii_phy = ma->mii_phyno; 129 sc->mii_service = inphy_service; 130 sc->mii_pdata = mii; 131 132 /* 133 * i82557 wedges if all of its PHYs are isolated! 134 */ 135 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "fxp") == 0 && 136 mii->mii_instance == 0) 137 sc->mii_flags |= MIIF_NOISOLATE; 138 139 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 140 141 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) 142 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 143 BMCR_ISO); 144 145 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 146 BMCR_LOOP|BMCR_S100); 147 148 mii_phy_reset(sc); 149 150 sc->mii_capabilities = 151 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 152 printf("%s: ", sc->mii_dev.dv_xname); 153 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 154 printf("no media present"); 155 else 156 mii_add_media(mii, sc->mii_capabilities, 157 sc->mii_inst); 158 printf("\n"); 159 #undef ADD 160 } 161 162 int 163 inphy_service(sc, mii, cmd) 164 struct mii_softc *sc; 165 struct mii_data *mii; 166 int cmd; 167 { 168 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 169 int reg; 170 171 switch (cmd) { 172 case MII_POLLSTAT: 173 /* 174 * If we're not polling our PHY instance, just return. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 return (0); 178 break; 179 180 case MII_MEDIACHG: 181 /* 182 * If the media indicates a different PHY instance, 183 * isolate ourselves. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 186 reg = PHY_READ(sc, MII_BMCR); 187 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 188 return (0); 189 } 190 191 /* 192 * If the interface is not up, don't do anything. 193 */ 194 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 195 break; 196 197 switch (IFM_SUBTYPE(ife->ifm_media)) { 198 case IFM_AUTO: 199 /* 200 * If we're already in auto mode, just return. 201 */ 202 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 203 return (0); 204 (void) mii_phy_auto(sc); 205 break; 206 case IFM_100_T4: 207 /* 208 * XXX Not supported as a manual setting right now. 209 */ 210 return (EINVAL); 211 default: 212 /* 213 * BMCR data is stored in the ifmedia entry. 214 */ 215 PHY_WRITE(sc, MII_ANAR, 216 mii_anar(ife->ifm_media)); 217 PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 218 } 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 /* 229 * Only used for autonegotiation. 230 */ 231 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 232 return (0); 233 234 /* 235 * Is the interface even up? 236 */ 237 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 238 return (0); 239 240 /* 241 * Check to see if we have link. If we do, we don't 242 * need to restart the autonegotiation process. Read 243 * the BMSR twice in case it's latched. 244 */ 245 reg = PHY_READ(sc, MII_BMSR) | 246 PHY_READ(sc, MII_BMSR); 247 if (reg & BMSR_LINK) 248 return (0); 249 250 /* 251 * Only retry autonegotiation every 5 seconds. 252 */ 253 if (++sc->mii_ticks != 5) 254 return (0); 255 256 sc->mii_ticks = 0; 257 mii_phy_reset(sc); 258 (void) mii_phy_auto(sc); 259 break; 260 } 261 262 /* Update the media status. */ 263 inphy_status(sc); 264 265 /* Callback if something changed. */ 266 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 267 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 268 sc->mii_active = mii->mii_media_active; 269 } 270 return (0); 271 } 272 273 void 274 inphy_status(sc) 275 struct mii_softc *sc; 276 { 277 struct mii_data *mii = sc->mii_pdata; 278 int bmsr, bmcr, scr; 279 280 mii->mii_media_status = IFM_AVALID; 281 mii->mii_media_active = IFM_ETHER; 282 283 bmsr = PHY_READ(sc, MII_BMSR) | 284 PHY_READ(sc, MII_BMSR); 285 if (bmsr & BMSR_LINK) 286 mii->mii_media_status |= IFM_ACTIVE; 287 288 bmcr = PHY_READ(sc, MII_BMCR); 289 if (bmcr & BMCR_ISO) { 290 mii->mii_media_active |= IFM_NONE; 291 mii->mii_media_status = 0; 292 return; 293 } 294 295 if (bmcr & BMCR_LOOP) 296 mii->mii_media_active |= IFM_LOOP; 297 298 if (bmcr & BMCR_AUTOEN) { 299 if ((bmsr & BMSR_ACOMP) == 0) { 300 /* Erg, still trying, I guess... */ 301 mii->mii_media_active |= IFM_NONE; 302 return; 303 } 304 scr = PHY_READ(sc, MII_INPHY_SCR); 305 if (scr & SCR_T4) 306 mii->mii_media_active |= IFM_100_T4; 307 else if (scr & SCR_S100) 308 mii->mii_media_active |= IFM_100_TX; 309 else 310 mii->mii_media_active |= IFM_10_T; 311 if (scr & SCR_FDX) 312 mii->mii_media_active |= IFM_FDX; 313 } else 314 mii->mii_media_active = mii_media_from_bmcr(bmcr); 315 } 316
Indexes created Tue Sep 23 07:09:52 GMT 2025