1 /* $NetBSD: dmphy.c,v 1.32 2008/05/04 17:06:09 xtraeme 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 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * driver for Davicom's DM9101 ethernet 10/100 PHY 64 * Data Sheet available from www.davicom8.com 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: dmphy.c,v 1.32 2008/05/04 17:06:09 xtraeme Exp $"); 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/kernel.h> 73 #include <sys/device.h> 74 #include <sys/socket.h> 75 #include <sys/errno.h> 76 77 #include <net/if.h> 78 #include <net/if_media.h> 79 80 #include <dev/mii/mii.h> 81 #include <dev/mii/miivar.h> 82 #include <dev/mii/miidevs.h> 83 84 #include <dev/mii/dmphyreg.h> 85 86 static int dmphymatch(device_t, cfdata_t, void *); 87 static void dmphyattach(device_t, device_t, void *); 88 89 CFATTACH_DECL_NEW(dmphy, sizeof(struct mii_softc), 90 dmphymatch, dmphyattach, mii_phy_detach, mii_phy_activate); 91 92 static int dmphy_service(struct mii_softc *, struct mii_data *, int); 93 static void dmphy_status(struct mii_softc *); 94 95 static const struct mii_phy_funcs dmphy_funcs = { 96 dmphy_service, dmphy_status, mii_phy_reset, 97 }; 98 99 static const struct mii_phydesc dmphys[] = { 100 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9101, 101 MII_STR_xxDAVICOM_DM9101 }, 102 103 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9102, 104 MII_STR_xxDAVICOM_DM9102 }, 105 106 { MII_OUI_DAVICOM, MII_MODEL_xxDAVICOM_DM9101, 107 MII_STR_xxDAVICOM_DM9101 }, 108 109 { 0, 0, 110 NULL }, 111 }; 112 113 static int 114 dmphymatch(device_t parent, cfdata_t match, void *aux) 115 { 116 struct mii_attach_args *ma = aux; 117 118 if (mii_phy_match(ma, dmphys) != NULL) 119 return (10); 120 121 return (0); 122 } 123 124 static void 125 dmphyattach(device_t parent, device_t self, void *aux) 126 { 127 struct mii_softc *sc = device_private(self); 128 struct mii_attach_args *ma = aux; 129 struct mii_data *mii = ma->mii_data; 130 const struct mii_phydesc *mpd; 131 132 mpd = mii_phy_match(ma, dmphys); 133 aprint_naive(": Media interface\n"); 134 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 135 136 sc->mii_dev = self; 137 sc->mii_inst = mii->mii_instance; 138 sc->mii_phy = ma->mii_phyno; 139 sc->mii_funcs = &dmphy_funcs; 140 sc->mii_pdata = mii; 141 sc->mii_flags = ma->mii_flags; 142 sc->mii_anegticks = MII_ANEGTICKS; 143 144 PHY_RESET(sc); 145 146 sc->mii_capabilities = 147 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 148 aprint_normal_dev(self, ""); 149 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 150 aprint_error("no media present"); 151 else 152 mii_phy_add_media(sc); 153 aprint_normal("\n"); 154 155 if (!pmf_device_register(self, NULL, mii_phy_resume)) 156 aprint_error_dev(self, "couldn't establish power handler\n"); 157 } 158 159 static int 160 dmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 161 { 162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 163 int reg; 164 165 switch (cmd) { 166 case MII_POLLSTAT: 167 /* 168 * If we're not polling our PHY instance, just return. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 171 return (0); 172 break; 173 174 case MII_MEDIACHG: 175 /* 176 * If the media indicates a different PHY instance, 177 * isolate ourselves. 178 */ 179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 180 reg = PHY_READ(sc, MII_BMCR); 181 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 182 return (0); 183 } 184 185 /* 186 * If the interface is not up, don't do anything. 187 */ 188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 189 break; 190 191 mii_phy_setmedia(sc); 192 break; 193 194 case MII_TICK: 195 /* 196 * If we're not currently selected, just return. 197 */ 198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 199 return (0); 200 201 if (mii_phy_tick(sc) == EJUSTRETURN) 202 return (0); 203 break; 204 205 case MII_DOWN: 206 mii_phy_down(sc); 207 return (0); 208 } 209 210 /* Update the media status. */ 211 mii_phy_status(sc); 212 213 /* Callback if something changed. */ 214 mii_phy_update(sc, cmd); 215 return (0); 216 } 217 218 static void 219 dmphy_status(struct mii_softc *sc) 220 { 221 struct mii_data *mii = sc->mii_pdata; 222 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 223 int bmsr, bmcr, dscsr; 224 225 mii->mii_media_status = IFM_AVALID; 226 mii->mii_media_active = IFM_ETHER; 227 228 bmsr = PHY_READ(sc, MII_BMSR) | 229 PHY_READ(sc, MII_BMSR); 230 if (bmsr & BMSR_LINK) 231 mii->mii_media_status |= IFM_ACTIVE; 232 233 bmcr = PHY_READ(sc, MII_BMCR); 234 if (bmcr & BMCR_ISO) { 235 mii->mii_media_active |= IFM_NONE; 236 mii->mii_media_status = 0; 237 return; 238 } 239 240 if (bmcr & BMCR_LOOP) 241 mii->mii_media_active |= IFM_LOOP; 242 243 if (bmcr & BMCR_AUTOEN) { 244 /* 245 * The PAR status bits are only valid of autonegotiation 246 * has completed (or it's disabled). 247 */ 248 if ((bmsr & BMSR_ACOMP) == 0) { 249 /* Erg, still trying, I guess... */ 250 mii->mii_media_active |= IFM_NONE; 251 return; 252 } 253 254 dscsr = PHY_READ(sc, MII_DMPHY_DSCSR); 255 if (dscsr & DSCSR_100FDX) 256 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 257 else if (dscsr & DSCSR_100HDX) 258 mii->mii_media_active |= IFM_100_TX; 259 else if (dscsr & DSCSR_10FDX) 260 mii->mii_media_active |= IFM_10_T|IFM_FDX; 261 else if (dscsr & DSCSR_10HDX) 262 mii->mii_media_active |= IFM_10_T; 263 else 264 mii->mii_media_active |= IFM_NONE; 265 } else 266 mii->mii_media_active = ife->ifm_media; 267 } 268