iophy.c revision 1.4
1 /* $NetBSD: iophy.c,v 1.4 2000/01/27 16:44:30 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 1999 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 * Intel 82553 PHY driver 71 */ 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/kernel.h> 76 #include <sys/device.h> 77 #include <sys/malloc.h> 78 #include <sys/socket.h> 79 80 #include <net/if.h> 81 #include <net/if_media.h> 82 83 #include <dev/mii/mii.h> 84 #include <dev/mii/miivar.h> 85 #include <dev/mii/miidevs.h> 86 87 #include <dev/mii/iophyreg.h> 88 89 int iophymatch __P((struct device *, struct cfdata *, void *)); 90 void iophyattach __P((struct device *, struct device *, void *)); 91 92 struct cfattach iophy_ca = { 93 sizeof(struct mii_softc), iophymatch, iophyattach, mii_detach, 94 mii_activate 95 }; 96 97 int iophy_service __P((struct mii_softc *, struct mii_data *, int)); 98 void iophy_status __P((struct mii_softc *)); 99 100 int 101 iophymatch(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_xxINTEL && 109 MII_MODEL(ma->mii_id2) == MII_MODEL_xxINTEL_I82553) 110 return (10); 111 112 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL && 113 MII_MODEL(ma->mii_id2) == MII_MODEL_INTEL_I82553) 114 return (10); 115 116 return (0); 117 } 118 119 void 120 iophyattach(parent, self, aux) 121 struct device *parent, *self; 122 void *aux; 123 { 124 struct mii_softc *sc = (struct mii_softc *)self; 125 struct mii_attach_args *ma = aux; 126 struct mii_data *mii = ma->mii_data; 127 128 printf(": %s, rev. %d\n", MII_STR_INTEL_I82553, 129 MII_REV(ma->mii_id2)); 130 131 sc->mii_inst = mii->mii_instance; 132 sc->mii_phy = ma->mii_phyno; 133 sc->mii_service = iophy_service; 134 sc->mii_pdata = mii; 135 136 /* 137 * i82557 wedges if all of its PHYs are isolated! 138 */ 139 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "fxp") == 0 && 140 mii->mii_instance == 0) 141 sc->mii_flags |= MIIF_NOISOLATE; 142 143 mii_phy_reset(sc); 144 145 sc->mii_capabilities = 146 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 147 printf("%s: ", sc->mii_dev.dv_xname); 148 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 149 printf("no media present"); 150 else 151 mii_add_media(sc); 152 printf("\n"); 153 } 154 155 int 156 iophy_service(sc, mii, cmd) 157 struct mii_softc *sc; 158 struct mii_data *mii; 159 int cmd; 160 { 161 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 162 int reg; 163 164 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 165 return (ENXIO); 166 167 switch (cmd) { 168 case MII_POLLSTAT: 169 /* 170 * If we're not polling our PHY instance, just return. 171 */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 173 return (0); 174 break; 175 176 case MII_MEDIACHG: 177 /* 178 * If the media indicates a different PHY instance, 179 * isolate ourselves. 180 */ 181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 182 reg = PHY_READ(sc, MII_BMCR); 183 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 184 return (0); 185 } 186 187 /* 188 * If the interface is not up, don't do anything. 189 */ 190 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 191 break; 192 193 switch (IFM_SUBTYPE(ife->ifm_media)) { 194 case IFM_AUTO: 195 /* 196 * If we're already in auto mode, just return. 197 */ 198 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 199 return (0); 200 (void) mii_phy_auto(sc, 1); 201 break; 202 default: 203 mii_phy_setmedia(sc); 204 } 205 break; 206 207 case MII_TICK: 208 /* 209 * If we're not currently selected, just return. 210 */ 211 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 212 return (0); 213 214 /* 215 * Only used for autonegotiation. 216 */ 217 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 218 return (0); 219 220 /* 221 * Is the interface even up? 222 */ 223 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 224 return (0); 225 226 /* 227 * Check to see if we have link. If we do, we don't 228 * need to restart the autonegotiation process. Read 229 * the BMSR twice in case it's latched. 230 */ 231 reg = PHY_READ(sc, MII_BMSR) | 232 PHY_READ(sc, MII_BMSR); 233 if (reg & BMSR_LINK) 234 return (0); 235 236 /* 237 * Only retry autonegotiation every 5 seconds. 238 */ 239 if (++sc->mii_ticks != 5) 240 return (0); 241 242 sc->mii_ticks = 0; 243 mii_phy_reset(sc); 244 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 245 return (0); 246 break; 247 248 case MII_DOWN: 249 mii_phy_down(sc); 250 return (0); 251 } 252 253 /* Update the media status. */ 254 iophy_status(sc); 255 256 /* Callback if something changed. */ 257 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 258 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 259 sc->mii_active = mii->mii_media_active; 260 } 261 return (0); 262 } 263 264 void 265 iophy_status(sc) 266 struct mii_softc *sc; 267 { 268 struct mii_data *mii = sc->mii_pdata; 269 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 270 int bmsr, bmcr, ext0; 271 272 mii->mii_media_status = IFM_AVALID; 273 mii->mii_media_active = IFM_ETHER; 274 275 bmsr = PHY_READ(sc, MII_BMSR) | 276 PHY_READ(sc, MII_BMSR); 277 if (bmsr & BMSR_LINK) 278 mii->mii_media_status |= IFM_ACTIVE; 279 280 bmcr = PHY_READ(sc, MII_BMCR); 281 if (bmcr & BMCR_ISO) { 282 mii->mii_media_active |= IFM_NONE; 283 mii->mii_media_status = 0; 284 return; 285 } 286 287 if (bmcr & BMCR_LOOP) 288 mii->mii_media_active |= IFM_LOOP; 289 290 if (bmcr & BMCR_AUTOEN) { 291 if ((bmsr & BMSR_ACOMP) == 0) { 292 /* Erg, still trying, I guess... */ 293 mii->mii_media_active |= IFM_NONE; 294 return; 295 } 296 ext0 = PHY_READ(sc, MII_IOPHY_EXT0); 297 298 if (ext0 & EXT0_SPEED) 299 if (bmsr & BMSR_100T4) { 300 mii->mii_media_active |= IFM_100_T4; 301 return; 302 } else { 303 mii->mii_media_active |= IFM_100_TX; 304 } 305 else 306 mii->mii_media_active |= IFM_10_T; 307 308 if (ext0 & EXT0_DUPLEX) 309 mii->mii_media_active |= IFM_FDX; 310 } else 311 mii->mii_media_active = ife->ifm_media; 312 } 313
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