dmphy.c revision 1.35
1 /* $NetBSD: dmphy.c,v 1.35 2014/06/16 16:48:16 msaitoh 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for Davicom's DM9101 ethernet 10/100 PHY 59 * Data Sheet available from www.davicom8.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: dmphy.c,v 1.35 2014/06/16 16:48:16 msaitoh Exp $"); 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.h> 70 #include <sys/errno.h> 71 72 #include <net/if.h> 73 #include <net/if_media.h> 74 75 #include <dev/mii/mii.h> 76 #include <dev/mii/miivar.h> 77 #include <dev/mii/miidevs.h> 78 79 #include <dev/mii/dmphyreg.h> 80 81 static int dmphymatch(device_t, cfdata_t, void *); 82 static void dmphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(dmphy, sizeof(struct mii_softc), 85 dmphymatch, dmphyattach, mii_phy_detach, mii_phy_activate); 86 87 static int dmphy_service(struct mii_softc *, struct mii_data *, int); 88 static void dmphy_status(struct mii_softc *); 89 90 static const struct mii_phy_funcs dmphy_funcs = { 91 dmphy_service, dmphy_status, mii_phy_reset, 92 }; 93 94 static const struct mii_phydesc dmphys[] = { 95 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9101, 96 MII_STR_xxDAVICOM_DM9101 }, 97 98 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9102, 99 MII_STR_xxDAVICOM_DM9102 }, 100 101 { MII_OUI_DAVICOM, MII_MODEL_xxDAVICOM_DM9101, 102 MII_STR_xxDAVICOM_DM9101 }, 103 104 { 0, 0, 105 NULL }, 106 }; 107 108 static int 109 dmphymatch(device_t parent, cfdata_t match, void *aux) 110 { 111 struct mii_attach_args *ma = aux; 112 113 if (mii_phy_match(ma, dmphys) != NULL) 114 return (10); 115 116 return (0); 117 } 118 119 static void 120 dmphyattach(device_t parent, device_t self, void *aux) 121 { 122 struct mii_softc *sc = device_private(self); 123 struct mii_attach_args *ma = aux; 124 struct mii_data *mii = ma->mii_data; 125 const struct mii_phydesc *mpd; 126 127 mpd = mii_phy_match(ma, dmphys); 128 aprint_naive(": Media interface\n"); 129 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 130 131 sc->mii_dev = self; 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_phy = ma->mii_phyno; 134 sc->mii_funcs = &dmphy_funcs; 135 sc->mii_pdata = mii; 136 sc->mii_flags = ma->mii_flags; 137 sc->mii_anegticks = MII_ANEGTICKS; 138 139 PHY_RESET(sc); 140 141 sc->mii_capabilities = 142 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 143 aprint_normal_dev(self, ""); 144 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 145 aprint_error("no media present"); 146 else 147 mii_phy_add_media(sc); 148 aprint_normal("\n"); 149 } 150 151 static int 152 dmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 153 { 154 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 155 int reg; 156 157 switch (cmd) { 158 case MII_POLLSTAT: 159 /* 160 * If we're not polling our PHY instance, just return. 161 */ 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 163 return (0); 164 break; 165 166 case MII_MEDIACHG: 167 /* 168 * If the media indicates a different PHY instance, 169 * isolate ourselves. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 172 reg = PHY_READ(sc, MII_BMCR); 173 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 174 return (0); 175 } 176 177 /* 178 * If the interface is not up, don't do anything. 179 */ 180 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 181 break; 182 183 mii_phy_setmedia(sc); 184 break; 185 186 case MII_TICK: 187 /* 188 * If we're not currently selected, just return. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 191 return (0); 192 193 if (mii_phy_tick(sc) == EJUSTRETURN) 194 return (0); 195 break; 196 197 case MII_DOWN: 198 mii_phy_down(sc); 199 return (0); 200 } 201 202 /* Update the media status. */ 203 mii_phy_status(sc); 204 205 /* Callback if something changed. */ 206 mii_phy_update(sc, cmd); 207 return (0); 208 } 209 210 static void 211 dmphy_status(struct mii_softc *sc) 212 { 213 struct mii_data *mii = sc->mii_pdata; 214 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 215 int bmsr, bmcr, dscsr; 216 217 mii->mii_media_status = IFM_AVALID; 218 mii->mii_media_active = IFM_ETHER; 219 220 bmsr = PHY_READ(sc, MII_BMSR) | 221 PHY_READ(sc, MII_BMSR); 222 if (bmsr & BMSR_LINK) 223 mii->mii_media_status |= IFM_ACTIVE; 224 225 bmcr = PHY_READ(sc, MII_BMCR); 226 if (bmcr & BMCR_ISO) { 227 mii->mii_media_active |= IFM_NONE; 228 mii->mii_media_status = 0; 229 return; 230 } 231 232 if (bmcr & BMCR_LOOP) 233 mii->mii_media_active |= IFM_LOOP; 234 235 if (bmcr & BMCR_AUTOEN) { 236 /* 237 * The PAR status bits are only valid of autonegotiation 238 * has completed (or it's disabled). 239 */ 240 if ((bmsr & BMSR_ACOMP) == 0) { 241 /* Erg, still trying, I guess... */ 242 mii->mii_media_active |= IFM_NONE; 243 return; 244 } 245 246 dscsr = PHY_READ(sc, MII_DMPHY_DSCSR); 247 if (dscsr & DSCSR_100FDX) 248 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 249 else if (dscsr & DSCSR_100HDX) 250 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 251 else if (dscsr & DSCSR_10FDX) 252 mii->mii_media_active |= IFM_10_T|IFM_FDX; 253 else if (dscsr & DSCSR_10HDX) 254 mii->mii_media_active |= IFM_10_T|IFM_HDX; 255 else 256 mii->mii_media_active |= IFM_NONE; 257 } else 258 mii->mii_media_active = ife->ifm_media; 259 } 260
Indexes created Tue Sep 23 14:10:03 GMT 2025