iophy.c revision 1.8
1 /* $NetBSD: iophy.c,v 1.8 2000/02/02 23:34:56 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_phy_detach, 94 mii_phy_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_status = iophy_status; 135 sc->mii_pdata = mii; 136 sc->mii_flags = mii->mii_flags; 137 138 mii_phy_reset(sc); 139 140 sc->mii_capabilities = 141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 142 printf("%s: ", sc->mii_dev.dv_xname); 143 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 144 printf("no media present"); 145 else 146 mii_phy_add_media(sc); 147 printf("\n"); 148 } 149 150 int 151 iophy_service(sc, mii, cmd) 152 struct mii_softc *sc; 153 struct mii_data *mii; 154 int cmd; 155 { 156 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 157 int reg; 158 159 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 160 return (ENXIO); 161 162 switch (cmd) { 163 case MII_POLLSTAT: 164 /* 165 * If we're not polling our PHY instance, just return. 166 */ 167 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 168 return (0); 169 break; 170 171 case MII_MEDIACHG: 172 /* 173 * If the media indicates a different PHY instance, 174 * isolate ourselves. 175 */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 177 reg = PHY_READ(sc, MII_BMCR); 178 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 179 return (0); 180 } 181 182 /* 183 * If the interface is not up, don't do anything. 184 */ 185 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 186 break; 187 188 mii_phy_setmedia(sc); 189 break; 190 191 case MII_TICK: 192 /* 193 * If we're not currently selected, just return. 194 */ 195 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 196 return (0); 197 198 /* 199 * Only used for autonegotiation. 200 */ 201 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 202 return (0); 203 204 /* 205 * Is the interface even up? 206 */ 207 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 208 return (0); 209 210 /* 211 * Check to see if we have link. If we do, we don't 212 * need to restart the autonegotiation process. Read 213 * the BMSR twice in case it's latched. 214 */ 215 reg = PHY_READ(sc, MII_BMSR) | 216 PHY_READ(sc, MII_BMSR); 217 if (reg & BMSR_LINK) 218 return (0); 219 220 /* 221 * Only retry autonegotiation every 5 seconds. 222 */ 223 if (++sc->mii_ticks != 5) 224 return (0); 225 226 sc->mii_ticks = 0; 227 mii_phy_reset(sc); 228 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 229 return (0); 230 break; 231 232 case MII_DOWN: 233 mii_phy_down(sc); 234 return (0); 235 } 236 237 /* Update the media status. */ 238 mii_phy_status(sc); 239 240 /* Callback if something changed. */ 241 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 242 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 243 sc->mii_active = mii->mii_media_active; 244 } 245 return (0); 246 } 247 248 void 249 iophy_status(sc) 250 struct mii_softc *sc; 251 { 252 struct mii_data *mii = sc->mii_pdata; 253 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 254 int bmsr, bmcr, ext0; 255 256 mii->mii_media_status = IFM_AVALID; 257 mii->mii_media_active = IFM_ETHER; 258 259 bmsr = PHY_READ(sc, MII_BMSR) | 260 PHY_READ(sc, MII_BMSR); 261 if (bmsr & BMSR_LINK) 262 mii->mii_media_status |= IFM_ACTIVE; 263 264 bmcr = PHY_READ(sc, MII_BMCR); 265 if (bmcr & BMCR_ISO) { 266 mii->mii_media_active |= IFM_NONE; 267 mii->mii_media_status = 0; 268 return; 269 } 270 271 if (bmcr & BMCR_LOOP) 272 mii->mii_media_active |= IFM_LOOP; 273 274 if (bmcr & BMCR_AUTOEN) { 275 if ((bmsr & BMSR_ACOMP) == 0) { 276 /* Erg, still trying, I guess... */ 277 mii->mii_media_active |= IFM_NONE; 278 return; 279 } 280 ext0 = PHY_READ(sc, MII_IOPHY_EXT0); 281 282 if (ext0 & EXT0_SPEED) 283 if (bmsr & BMSR_100T4) { 284 mii->mii_media_active |= IFM_100_T4; 285 return; 286 } else { 287 mii->mii_media_active |= IFM_100_TX; 288 } 289 else 290 mii->mii_media_active |= IFM_10_T; 291 292 if (ext0 & EXT0_DUPLEX) 293 mii->mii_media_active |= IFM_FDX; 294 } else 295 mii->mii_media_active = ife->ifm_media; 296 } 297
Indexes created Wed Sep 24 05:09:52 GMT 2025