1 /* $NetBSD: dmphy.c,v 1.28 2007/12/09 20:28:02 jmcneill 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 1.28 2007/12/09 20:28:02 jmcneill 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 static int dmphymatch(struct device *, struct cfdata *, void *); 94 static 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 static int dmphy_service(struct mii_softc *, struct mii_data *, int); 100 static void dmphy_status(struct mii_softc *); 101 102 static const struct mii_phy_funcs dmphy_funcs = { 103 dmphy_service, dmphy_status, mii_phy_reset, 104 }; 105 106 static const struct mii_phydesc dmphys[] = { 107 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9101, 108 MII_STR_xxDAVICOM_DM9101 }, 109 110 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9102, 111 MII_STR_xxDAVICOM_DM9102 }, 112 113 { MII_OUI_DAVICOM, MII_MODEL_xxDAVICOM_DM9101, 114 MII_STR_xxDAVICOM_DM9101 }, 115 116 { 0, 0, 117 NULL }, 118 }; 119 120 static int 121 dmphymatch(struct device *parent, struct cfdata *match, 122 void *aux) 123 { 124 struct mii_attach_args *ma = aux; 125 126 if (mii_phy_match(ma, dmphys) != NULL) 127 return (10); 128 129 return (0); 130 } 131 132 static void 133 dmphyattach(struct device *parent, struct device *self, void *aux) 134 { 135 struct mii_softc *sc = device_private(self); 136 struct mii_attach_args *ma = aux; 137 struct mii_data *mii = ma->mii_data; 138 const struct mii_phydesc *mpd; 139 140 mpd = mii_phy_match(ma, dmphys); 141 aprint_naive(": Media interface\n"); 142 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 143 144 sc->mii_inst = mii->mii_instance; 145 sc->mii_phy = ma->mii_phyno; 146 sc->mii_funcs = &dmphy_funcs; 147 sc->mii_pdata = mii; 148 sc->mii_flags = ma->mii_flags; 149 sc->mii_anegticks = MII_ANEGTICKS; 150 151 PHY_RESET(sc); 152 153 sc->mii_capabilities = 154 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 155 aprint_normal("%s: ", sc->mii_dev.dv_xname); 156 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 157 aprint_error("no media present"); 158 else 159 mii_phy_add_media(sc); 160 aprint_normal("\n"); 161 162 if (!pmf_device_register(self, NULL, mii_phy_resume)) 163 aprint_error_dev(self, "couldn't establish power handler\n"); 164 } 165 166 static int 167 dmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 if (!device_is_active(&sc->mii_dev)) 173 return (ENXIO); 174 175 switch (cmd) { 176 case MII_POLLSTAT: 177 /* 178 * If we're not polling our PHY instance, just return. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 181 return (0); 182 break; 183 184 case MII_MEDIACHG: 185 /* 186 * If the media indicates a different PHY instance, 187 * isolate ourselves. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 190 reg = PHY_READ(sc, MII_BMCR); 191 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 192 return (0); 193 } 194 195 /* 196 * If the interface is not up, don't do anything. 197 */ 198 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 199 break; 200 201 mii_phy_setmedia(sc); 202 break; 203 204 case MII_TICK: 205 /* 206 * If we're not currently selected, just return. 207 */ 208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 209 return (0); 210 211 if (mii_phy_tick(sc) == EJUSTRETURN) 212 return (0); 213 break; 214 215 case MII_DOWN: 216 mii_phy_down(sc); 217 return (0); 218 } 219 220 /* Update the media status. */ 221 mii_phy_status(sc); 222 223 /* Callback if something changed. */ 224 mii_phy_update(sc, cmd); 225 return (0); 226 } 227 228 static void 229 dmphy_status(struct mii_softc *sc) 230 { 231 struct mii_data *mii = sc->mii_pdata; 232 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 233 int bmsr, bmcr, dscsr; 234 235 mii->mii_media_status = IFM_AVALID; 236 mii->mii_media_active = IFM_ETHER; 237 238 bmsr = PHY_READ(sc, MII_BMSR) | 239 PHY_READ(sc, MII_BMSR); 240 if (bmsr & BMSR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 bmcr = PHY_READ(sc, MII_BMCR); 244 if (bmcr & BMCR_ISO) { 245 mii->mii_media_active |= IFM_NONE; 246 mii->mii_media_status = 0; 247 return; 248 } 249 250 if (bmcr & BMCR_LOOP) 251 mii->mii_media_active |= IFM_LOOP; 252 253 if (bmcr & BMCR_AUTOEN) { 254 /* 255 * The PAR status bits are only valid of autonegotiation 256 * has completed (or it's disabled). 257 */ 258 if ((bmsr & BMSR_ACOMP) == 0) { 259 /* Erg, still trying, I guess... */ 260 mii->mii_media_active |= IFM_NONE; 261 return; 262 } 263 264 dscsr = PHY_READ(sc, MII_DMPHY_DSCSR); 265 if (dscsr & DSCSR_100FDX) 266 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 267 else if (dscsr & DSCSR_100HDX) 268 mii->mii_media_active |= IFM_100_TX; 269 else if (dscsr & DSCSR_10FDX) 270 mii->mii_media_active |= IFM_10_T|IFM_FDX; 271 else if (dscsr & DSCSR_10HDX) 272 mii->mii_media_active |= IFM_10_T; 273 else 274 mii->mii_media_active |= IFM_NONE; 275 } else 276 mii->mii_media_active = ife->ifm_media; 277 } 278