iophy.c revision 1.3
1 /* $NetBSD: iophy.c,v 1.3 1999/11/12 18:13:00 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 94 }; 95 96 int iophy_service __P((struct mii_softc *, struct mii_data *, int)); 97 void iophy_status __P((struct mii_softc *)); 98 99 int 100 iophymatch(parent, match, aux) 101 struct device *parent; 102 struct cfdata *match; 103 void *aux; 104 { 105 struct mii_attach_args *ma = aux; 106 107 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxINTEL && 108 MII_MODEL(ma->mii_id2) == MII_MODEL_xxINTEL_I82553) 109 return (10); 110 111 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL && 112 MII_MODEL(ma->mii_id2) == MII_MODEL_INTEL_I82553) 113 return (10); 114 115 return (0); 116 } 117 118 void 119 iophyattach(parent, self, aux) 120 struct device *parent, *self; 121 void *aux; 122 { 123 struct mii_softc *sc = (struct mii_softc *)self; 124 struct mii_attach_args *ma = aux; 125 struct mii_data *mii = ma->mii_data; 126 127 printf(": %s, rev. %d\n", MII_STR_INTEL_I82553, 128 MII_REV(ma->mii_id2)); 129 130 sc->mii_inst = mii->mii_instance; 131 sc->mii_phy = ma->mii_phyno; 132 sc->mii_service = iophy_service; 133 sc->mii_pdata = mii; 134 135 /* 136 * i82557 wedges if all of its PHYs are isolated! 137 */ 138 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "fxp") == 0 && 139 mii->mii_instance == 0) 140 sc->mii_flags |= MIIF_NOISOLATE; 141 142 mii_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 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 148 printf("no media present"); 149 else 150 mii_add_media(sc); 151 printf("\n"); 152 } 153 154 int 155 iophy_service(sc, mii, cmd) 156 struct mii_softc *sc; 157 struct mii_data *mii; 158 int cmd; 159 { 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 int reg; 162 163 switch (cmd) { 164 case MII_POLLSTAT: 165 /* 166 * If we're not polling our PHY instance, just return. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 169 return (0); 170 break; 171 172 case MII_MEDIACHG: 173 /* 174 * If the media indicates a different PHY instance, 175 * isolate ourselves. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 178 reg = PHY_READ(sc, MII_BMCR); 179 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 180 return (0); 181 } 182 183 /* 184 * If the interface is not up, don't do anything. 185 */ 186 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 187 break; 188 189 switch (IFM_SUBTYPE(ife->ifm_media)) { 190 case IFM_AUTO: 191 /* 192 * If we're already in auto mode, just return. 193 */ 194 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 195 return (0); 196 (void) mii_phy_auto(sc, 1); 197 break; 198 default: 199 mii_phy_setmedia(sc); 200 } 201 break; 202 203 case MII_TICK: 204 /* 205 * If we're not currently selected, just return. 206 */ 207 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 208 return (0); 209 210 /* 211 * Only used for autonegotiation. 212 */ 213 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 214 return (0); 215 216 /* 217 * Is the interface even up? 218 */ 219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 220 return (0); 221 222 /* 223 * Check to see if we have link. If we do, we don't 224 * need to restart the autonegotiation process. Read 225 * the BMSR twice in case it's latched. 226 */ 227 reg = PHY_READ(sc, MII_BMSR) | 228 PHY_READ(sc, MII_BMSR); 229 if (reg & BMSR_LINK) 230 return (0); 231 232 /* 233 * Only retry autonegotiation every 5 seconds. 234 */ 235 if (++sc->mii_ticks != 5) 236 return (0); 237 238 sc->mii_ticks = 0; 239 mii_phy_reset(sc); 240 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 241 return (0); 242 break; 243 244 case MII_DOWN: 245 mii_phy_down(sc); 246 return (0); 247 } 248 249 /* Update the media status. */ 250 iophy_status(sc); 251 252 /* Callback if something changed. */ 253 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 254 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 255 sc->mii_active = mii->mii_media_active; 256 } 257 return (0); 258 } 259 260 void 261 iophy_status(sc) 262 struct mii_softc *sc; 263 { 264 struct mii_data *mii = sc->mii_pdata; 265 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 266 int bmsr, bmcr, ext0; 267 268 mii->mii_media_status = IFM_AVALID; 269 mii->mii_media_active = IFM_ETHER; 270 271 bmsr = PHY_READ(sc, MII_BMSR) | 272 PHY_READ(sc, MII_BMSR); 273 if (bmsr & BMSR_LINK) 274 mii->mii_media_status |= IFM_ACTIVE; 275 276 bmcr = PHY_READ(sc, MII_BMCR); 277 if (bmcr & BMCR_ISO) { 278 mii->mii_media_active |= IFM_NONE; 279 mii->mii_media_status = 0; 280 return; 281 } 282 283 if (bmcr & BMCR_LOOP) 284 mii->mii_media_active |= IFM_LOOP; 285 286 if (bmcr & BMCR_AUTOEN) { 287 if ((bmsr & BMSR_ACOMP) == 0) { 288 /* Erg, still trying, I guess... */ 289 mii->mii_media_active |= IFM_NONE; 290 return; 291 } 292 ext0 = PHY_READ(sc, MII_IOPHY_EXT0); 293 294 if (ext0 & EXT0_SPEED) 295 if (bmsr & BMSR_100T4) { 296 mii->mii_media_active |= IFM_100_T4; 297 return; 298 } else { 299 mii->mii_media_active |= IFM_100_TX; 300 } 301 else 302 mii->mii_media_active |= IFM_10_T; 303 304 if (ext0 & EXT0_DUPLEX) 305 mii->mii_media_active |= IFM_FDX; 306 } else 307 mii->mii_media_active = ife->ifm_media; 308 } 309
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