dmphy.c revision 1.1
1 /* $NetBSD: dmphy.c,v 1.1 2000/02/02 04:29:49 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 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 Davicom's DM9101 ethernet 10/100 PHY 71 * Data Sheet available from www.davicom8.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 #include <sys/errno.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/dmphyreg.h> 90 91 int dmphymatch __P((struct device *, struct cfdata *, void *)); 92 void dmphyattach __P((struct device *, struct device *, void *)); 93 94 struct cfattach dmphy_ca = { 95 sizeof(struct mii_softc), dmphymatch, dmphyattach, mii_detach, 96 mii_activate 97 }; 98 99 int dmphy_service __P((struct mii_softc *, struct mii_data *, int)); 100 void dmphy_status __P((struct mii_softc *)); 101 102 int 103 dmphymatch(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_xxDAVICOM && 111 MII_MODEL(ma->mii_id2) == MII_MODEL_xxDAVICOM_DM9101) 112 return (10); 113 114 return (0); 115 } 116 117 void 118 dmphyattach(parent, self, aux) 119 struct device *parent, *self; 120 void *aux; 121 { 122 struct mii_softc *sc = (struct mii_softc *)self; 123 struct mii_attach_args *ma = aux; 124 struct mii_data *mii = ma->mii_data; 125 126 printf(": %s, rev. %d\n", MII_STR_xxDAVICOM_DM9101, 127 MII_REV(ma->mii_id2)); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_service = dmphy_service; 132 sc->mii_pdata = mii; 133 134 mii_phy_reset(sc); 135 136 sc->mii_capabilities = 137 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 138 printf("%s: ", sc->mii_dev.dv_xname); 139 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 140 printf("no media present"); 141 else 142 mii_add_media(sc); 143 printf("\n"); 144 } 145 146 int 147 dmphy_service(sc, mii, cmd) 148 struct mii_softc *sc; 149 struct mii_data *mii; 150 int cmd; 151 { 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 int reg; 154 155 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 156 return (ENXIO); 157 158 switch (cmd) { 159 case MII_POLLSTAT: 160 /* 161 * If we're not polling our PHY instance, just return. 162 */ 163 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 164 return (0); 165 break; 166 167 case MII_MEDIACHG: 168 /* 169 * If the media indicates a different PHY instance, 170 * isolate ourselves. 171 */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 173 reg = PHY_READ(sc, MII_BMCR); 174 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 175 return (0); 176 } 177 178 /* 179 * If the interface is not up, don't do anything. 180 */ 181 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 182 break; 183 184 switch (IFM_SUBTYPE(ife->ifm_media)) { 185 case IFM_AUTO: 186 /* 187 * If we're already in auto mode, just return. 188 */ 189 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 190 return (0); 191 (void) mii_phy_auto(sc, 1); 192 break; 193 default: 194 mii_phy_setmedia(sc); 195 } 196 break; 197 198 case MII_TICK: 199 /* 200 * If we're not currently selected, just return. 201 */ 202 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 203 return (0); 204 205 /* 206 * Only used for autonegotiation. 207 */ 208 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 209 return (0); 210 211 /* 212 * Is the interface even up? 213 */ 214 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 215 return (0); 216 217 /* 218 * Check to see if we have link. If we do, we don't 219 * need to restart the autonegotiation process. Read 220 * the BMSR twice in case it's latched. 221 */ 222 reg = PHY_READ(sc, MII_BMSR) | 223 PHY_READ(sc, MII_BMSR); 224 if (reg & BMSR_LINK) 225 return (0); 226 227 /* 228 * Only retry autonegotiation every 5 seconds. 229 */ 230 if (++sc->mii_ticks != 5) 231 return (0); 232 233 sc->mii_ticks = 0; 234 mii_phy_reset(sc); 235 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 236 return (0); 237 break; 238 239 case MII_DOWN: 240 mii_phy_down(sc); 241 return (0); 242 } 243 244 /* Update the media status. */ 245 dmphy_status(sc); 246 247 /* Callback if something changed. */ 248 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 249 (*mii->mii_statchg)(sc->mii_dev.dv_parent); 250 sc->mii_active = mii->mii_media_active; 251 } 252 return (0); 253 } 254 255 void 256 dmphy_status(sc) 257 struct mii_softc *sc; 258 { 259 struct mii_data *mii = sc->mii_pdata; 260 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 261 int bmsr, bmcr, dscsr; 262 263 mii->mii_media_status = IFM_AVALID; 264 mii->mii_media_active = IFM_ETHER; 265 266 bmsr = PHY_READ(sc, MII_BMSR) | 267 PHY_READ(sc, MII_BMSR); 268 if (bmsr & BMSR_LINK) 269 mii->mii_media_status |= IFM_ACTIVE; 270 271 bmcr = PHY_READ(sc, MII_BMCR); 272 if (bmcr & BMCR_ISO) { 273 mii->mii_media_active |= IFM_NONE; 274 mii->mii_media_status = 0; 275 return; 276 } 277 278 if (bmcr & BMCR_LOOP) 279 mii->mii_media_active |= IFM_LOOP; 280 281 if (bmcr & BMCR_AUTOEN) { 282 /* 283 * The PAR status bits are only valid of autonegotiation 284 * has completed (or it's disabled). 285 */ 286 if ((bmsr & BMSR_ACOMP) == 0) { 287 /* Erg, still trying, I guess... */ 288 mii->mii_media_active |= IFM_NONE; 289 return; 290 } 291 292 dscsr = PHY_READ(sc, MII_DMPHY_DSCSR); 293 if (dscsr & DSCSR_100FDX) 294 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 295 else if (dscsr & DSCSR_100HDX) 296 mii->mii_media_active |= IFM_100_TX; 297 else if (dscsr & DSCSR_10FDX) 298 mii->mii_media_active |= IFM_10_T|IFM_FDX; 299 else if (dscsr & DSCSR_10HDX) 300 mii->mii_media_active |= IFM_10_T; 301 else 302 mii->mii_media_active |= IFM_NONE; 303 } else 304 mii->mii_media_active = ife->ifm_media; 305 } 306
Indexes created Mon Sep 22 13:09:51 GMT 2025