tqphy.c revision 1.8
1 /* $NetBSD: tqphy.c,v 1.8 2000/02/02 17:50:47 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 * TDK TSC78Q2120 PHY driver 71 * 72 * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf . 73 */ 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/device.h> 79 #include <sys/malloc.h> 80 #include <sys/socket.h> 81 82 #include <net/if.h> 83 #include <net/if_media.h> 84 85 #include <dev/mii/mii.h> 86 #include <dev/mii/miivar.h> 87 #include <dev/mii/miidevs.h> 88 89 #include <dev/mii/tqphyreg.h> 90 91 int tqphymatch __P((struct device *, struct cfdata *, void *)); 92 void tqphyattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach tqphy_ca = { 95 sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach, 96 mii_phy_activate 97 }; 98 99 int tqphy_service __P((struct mii_softc *, struct mii_data *, int)); 100 void tqphy_status __P((struct mii_softc *)); 101 102 int 103 tqphymatch(parent, match, aux) 104 struct device *parent; 105 struct cfdata *match; 106 void *aux; 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_TSC) 111 switch MII_MODEL(ma->mii_id2) { 112 case MII_MODEL_TSC_78Q2120: 113 /* case MII_MODEL_TSC_78Q2121: */ 114 return (10); 115 } 116 117 return (0); 118 } 119 120 void 121 tqphyattach(parent, self, aux) 122 struct device *parent, *self; 123 void *aux; 124 { 125 struct mii_softc *sc = (struct mii_softc *)self; 126 struct mii_attach_args *ma = aux; 127 struct mii_data *mii = ma->mii_data; 128 129 printf(": %s, rev. %d\n", MII_STR_TSC_78Q2120, 130 MII_REV(ma->mii_id2)); 131 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 sc->mii_service = tqphy_service; 135 sc->mii_status = tqphy_status; 136 sc->mii_pdata = mii; 137 sc->mii_flags = mii->mii_flags; 138 139 /* 140 * Apparently, we can't do loopback on this PHY. 141 */ 142 sc->mii_flags |= MIIF_NOLOOP; 143 144 mii_phy_reset(sc); 145 146 sc->mii_capabilities = 147 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 148 printf("%s: ", sc->mii_dev.dv_xname); 149 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 150 printf("no media present"); 151 else 152 mii_phy_add_media(sc); 153 printf("\n"); 154 } 155 156 int 157 tqphy_service(sc, mii, cmd) 158 struct mii_softc *sc; 159 struct mii_data *mii; 160 int cmd; 161 { 162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 163 int reg; 164 165 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 166 return (ENXIO); 167 168 switch (cmd) { 169 case MII_POLLSTAT: 170 /* 171 * If we're not polling our PHY instance, just return. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 174 return (0); 175 break; 176 177 case MII_MEDIACHG: 178 /* 179 * If the media indicates a different PHY instance, 180 * isolate ourselves. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 183 reg = PHY_READ(sc, MII_BMCR); 184 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 185 return (0); 186 } 187 188 /* 189 * If the interface is not up, don't do anything. 190 */ 191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 192 break; 193 194 switch (IFM_SUBTYPE(ife->ifm_media)) { 195 case IFM_AUTO: 196 /* 197 * If we're already in auto mode, just return. 198 */ 199 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 200 return (0); 201 (void) mii_phy_auto(sc, 1); 202 break; 203 default: 204 mii_phy_setmedia(sc); 205 } 206 break; 207 208 case MII_TICK: 209 /* 210 * If we're not currently selected, just return. 211 */ 212 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 213 return (0); 214 215 /* 216 * Only used for autonegotiation. 217 */ 218 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 219 return (0); 220 221 /* 222 * Is the interface even up? 223 */ 224 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 225 return (0); 226 227 /* 228 * Check to see if we have link. If we do, we don't 229 * need to restart the autonegotiation process. Read 230 * the BMSR twice in case it's latched. 231 */ 232 reg = PHY_READ(sc, MII_BMSR) | 233 PHY_READ(sc, MII_BMSR); 234 if (reg & BMSR_LINK) 235 return (0); 236 237 /* 238 * Only retry autonegotiation every 5 seconds. 239 */ 240 if (++sc->mii_ticks != 5) 241 return (0); 242 243 sc->mii_ticks = 0; 244 mii_phy_reset(sc); 245 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 246 return (0); 247 break; 248 249 case MII_DOWN: 250 mii_phy_down(sc); 251 return (0); 252 } 253 254 /* Update the media status. */ 255 mii_phy_status(sc); 256 257 /* Callback if something changed. */ 258 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 259 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 260 sc->mii_active = mii->mii_media_active; 261 } 262 return (0); 263 } 264 265 void 266 tqphy_status(sc) 267 struct mii_softc *sc; 268 { 269 struct mii_data *mii = sc->mii_pdata; 270 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 271 int bmsr, bmcr, diag; 272 273 mii->mii_media_status = IFM_AVALID; 274 mii->mii_media_active = IFM_ETHER; 275 276 bmsr = PHY_READ(sc, MII_BMSR) | 277 PHY_READ(sc, MII_BMSR); 278 if (bmsr & BMSR_LINK) 279 mii->mii_media_status |= IFM_ACTIVE; 280 281 bmcr = PHY_READ(sc, MII_BMCR); 282 if (bmcr & BMCR_ISO) { 283 mii->mii_media_active |= IFM_NONE; 284 mii->mii_media_status = 0; 285 return; 286 } 287 288 if (bmcr & BMCR_LOOP) 289 mii->mii_media_active |= IFM_LOOP; 290 291 if (bmcr & BMCR_AUTOEN) { 292 if ((bmsr & BMSR_ACOMP) == 0) { 293 /* Erg, still trying, I guess... */ 294 mii->mii_media_active |= IFM_NONE; 295 return; 296 } 297 diag = PHY_READ(sc, MII_TQPHY_DIAG); 298 if (diag & DIAG_RATE) 299 mii->mii_media_active |= IFM_100_TX; 300 else 301 mii->mii_media_active |= IFM_10_T; 302 if (diag & DIAG_DPLX) 303 mii->mii_media_active |= IFM_FDX; 304 } else 305 mii->mii_media_active = ife->ifm_media; 306 } 307
Indexes created Wed Sep 24 05:09:52 GMT 2025