dmphy.c revision 1.10
1 /* $NetBSD: dmphy.c,v 1.10 2001/06/02 21:39:38 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_phy_detach, 96 mii_phy_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 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(parent, match, aux) 119 struct device *parent; 120 struct cfdata *match; 121 void *aux; 122 { 123 struct mii_attach_args *ma = aux; 124 125 if (mii_phy_match(ma, dmphys) != NULL) 126 return (10); 127 128 return (0); 129 } 130 131 void 132 dmphyattach(parent, self, aux) 133 struct device *parent, *self; 134 void *aux; 135 { 136 struct mii_softc *sc = (struct mii_softc *)self; 137 struct mii_attach_args *ma = aux; 138 struct mii_data *mii = ma->mii_data; 139 const struct mii_phydesc *mpd; 140 141 mpd = mii_phy_match(ma, dmphys); 142 printf(": %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 = mii->mii_flags; 149 sc->mii_anegticks = 5; 150 151 PHY_RESET(sc); 152 153 sc->mii_capabilities = 154 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 155 printf("%s: ", sc->mii_dev.dv_xname); 156 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 157 printf("no media present"); 158 else 159 mii_phy_add_media(sc); 160 printf("\n"); 161 } 162 163 int 164 dmphy_service(sc, mii, cmd) 165 struct mii_softc *sc; 166 struct mii_data *mii; 167 int cmd; 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 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 void 229 dmphy_status(sc) 230 struct mii_softc *sc; 231 { 232 struct mii_data *mii = sc->mii_pdata; 233 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 234 int bmsr, bmcr, dscsr; 235 236 mii->mii_media_status = IFM_AVALID; 237 mii->mii_media_active = IFM_ETHER; 238 239 bmsr = PHY_READ(sc, MII_BMSR) | 240 PHY_READ(sc, MII_BMSR); 241 if (bmsr & BMSR_LINK) 242 mii->mii_media_status |= IFM_ACTIVE; 243 244 bmcr = PHY_READ(sc, MII_BMCR); 245 if (bmcr & BMCR_ISO) { 246 mii->mii_media_active |= IFM_NONE; 247 mii->mii_media_status = 0; 248 return; 249 } 250 251 if (bmcr & BMCR_LOOP) 252 mii->mii_media_active |= IFM_LOOP; 253 254 if (bmcr & BMCR_AUTOEN) { 255 /* 256 * The PAR status bits are only valid of autonegotiation 257 * has completed (or it's disabled). 258 */ 259 if ((bmsr & BMSR_ACOMP) == 0) { 260 /* Erg, still trying, I guess... */ 261 mii->mii_media_active |= IFM_NONE; 262 return; 263 } 264 265 dscsr = PHY_READ(sc, MII_DMPHY_DSCSR); 266 if (dscsr & DSCSR_100FDX) 267 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 268 else if (dscsr & DSCSR_100HDX) 269 mii->mii_media_active |= IFM_100_TX; 270 else if (dscsr & DSCSR_10FDX) 271 mii->mii_media_active |= IFM_10_T|IFM_FDX; 272 else if (dscsr & DSCSR_10HDX) 273 mii->mii_media_active |= IFM_10_T; 274 else 275 mii->mii_media_active |= IFM_NONE; 276 } else 277 mii->mii_media_active = ife->ifm_media; 278 } 279
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