dmphy.c revision 1.17
1 /* $NetBSD: dmphy.c,v 1.17 2002/10/02 16:34:15 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/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: dmphy.c,v 1.17 2002/10/02 16:34:15 thorpej Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/kernel.h> 80 #include <sys/device.h> 81 #include <sys/socket.h> 82 #include <sys/errno.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <dev/mii/mii.h> 88 #include <dev/mii/miivar.h> 89 #include <dev/mii/miidevs.h> 90 91 #include <dev/mii/dmphyreg.h> 92 93 int dmphymatch(struct device *, struct cfdata *, void *); 94 void dmphyattach(struct device *, struct device *, void *); 95 96 CFATTACH_DECL(dmphy, sizeof(struct mii_softc), 97 dmphymatch, dmphyattach, mii_phy_detach, mii_phy_activate); 98 99 int dmphy_service(struct mii_softc *, struct mii_data *, int); 100 void dmphy_status(struct mii_softc *); 101 102 const struct mii_phy_funcs dmphy_funcs = { 103 dmphy_service, dmphy_status, mii_phy_reset, 104 }; 105 106 const struct mii_phydesc dmphys[] = { 107 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9101, 108 MII_STR_xxDAVICOM_DM9101 }, 109 110 { MII_OUI_DAVICOM, MII_MODEL_xxDAVICOM_DM9101, 111 MII_STR_xxDAVICOM_DM9101 }, 112 113 { 0, 0, 114 NULL }, 115 }; 116 117 int 118 dmphymatch(struct device *parent, struct cfdata *match, void *aux) 119 { 120 struct mii_attach_args *ma = aux; 121 122 if (mii_phy_match(ma, dmphys) != NULL) 123 return (10); 124 125 return (0); 126 } 127 128 void 129 dmphyattach(struct device *parent, struct device *self, void *aux) 130 { 131 struct mii_softc *sc = (struct mii_softc *)self; 132 struct mii_attach_args *ma = aux; 133 struct mii_data *mii = ma->mii_data; 134 const struct mii_phydesc *mpd; 135 136 mpd = mii_phy_match(ma, dmphys); 137 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 138 139 sc->mii_inst = mii->mii_instance; 140 sc->mii_phy = ma->mii_phyno; 141 sc->mii_funcs = &dmphy_funcs; 142 sc->mii_pdata = mii; 143 sc->mii_flags = ma->mii_flags; 144 sc->mii_anegticks = 5; 145 146 PHY_RESET(sc); 147 148 sc->mii_capabilities = 149 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 150 printf("%s: ", sc->mii_dev.dv_xname); 151 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 152 printf("no media present"); 153 else 154 mii_phy_add_media(sc); 155 printf("\n"); 156 } 157 158 int 159 dmphy_service(struct mii_softc *sc, struct mii_data *mii, 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 mii_phy_setmedia(sc); 194 break; 195 196 case MII_TICK: 197 /* 198 * If we're not currently selected, just return. 199 */ 200 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 201 return (0); 202 203 if (mii_phy_tick(sc) == EJUSTRETURN) 204 return (0); 205 break; 206 207 case MII_DOWN: 208 mii_phy_down(sc); 209 return (0); 210 } 211 212 /* Update the media status. */ 213 mii_phy_status(sc); 214 215 /* Callback if something changed. */ 216 mii_phy_update(sc, cmd); 217 return (0); 218 } 219 220 void 221 dmphy_status(struct mii_softc *sc) 222 { 223 struct mii_data *mii = sc->mii_pdata; 224 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 225 int bmsr, bmcr, dscsr; 226 227 mii->mii_media_status = IFM_AVALID; 228 mii->mii_media_active = IFM_ETHER; 229 230 bmsr = PHY_READ(sc, MII_BMSR) | 231 PHY_READ(sc, MII_BMSR); 232 if (bmsr & BMSR_LINK) 233 mii->mii_media_status |= IFM_ACTIVE; 234 235 bmcr = PHY_READ(sc, MII_BMCR); 236 if (bmcr & BMCR_ISO) { 237 mii->mii_media_active |= IFM_NONE; 238 mii->mii_media_status = 0; 239 return; 240 } 241 242 if (bmcr & BMCR_LOOP) 243 mii->mii_media_active |= IFM_LOOP; 244 245 if (bmcr & BMCR_AUTOEN) { 246 /* 247 * The PAR status bits are only valid of autonegotiation 248 * has completed (or it's disabled). 249 */ 250 if ((bmsr & BMSR_ACOMP) == 0) { 251 /* Erg, still trying, I guess... */ 252 mii->mii_media_active |= IFM_NONE; 253 return; 254 } 255 256 dscsr = PHY_READ(sc, MII_DMPHY_DSCSR); 257 if (dscsr & DSCSR_100FDX) 258 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 259 else if (dscsr & DSCSR_100HDX) 260 mii->mii_media_active |= IFM_100_TX; 261 else if (dscsr & DSCSR_10FDX) 262 mii->mii_media_active |= IFM_10_T|IFM_FDX; 263 else if (dscsr & DSCSR_10HDX) 264 mii->mii_media_active |= IFM_10_T; 265 else 266 mii->mii_media_active |= IFM_NONE; 267 } else 268 mii->mii_media_active = ife->ifm_media; 269 } 270
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