1 /* $OpenBSD: tqphy.c,v 1.18 2015/03/14 03:38:48 jsg Exp $ */ 2 /* $NetBSD: tqphy.c,v 1.9 2000/02/02 23:34:57 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 /* 59 * TDK TSC78Q2120 PHY driver 60 * 61 * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf . 62 */ 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/device.h> 67 #include <sys/socket.h> 68 69 #include <net/if.h> 70 #include <net/if_var.h> 71 #include <net/if_media.h> 72 73 #include <dev/mii/mii.h> 74 #include <dev/mii/miivar.h> 75 #include <dev/mii/miidevs.h> 76 77 #include <dev/mii/tqphyreg.h> 78 79 int tqphymatch(struct device *, void *, void *); 80 void tqphyattach(struct device *, struct device *, void *); 81 int tqphydetach(struct device *, int); 82 83 struct cfattach tqphy_ca = { 84 sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach 85 }; 86 87 struct cfdriver tqphy_cd = { 88 NULL, "tqphy", DV_DULL 89 }; 90 91 int tqphy_service(struct mii_softc *, struct mii_data *, int); 92 void tqphy_status(struct mii_softc *); 93 94 const struct mii_phy_funcs tqphy_funcs = { 95 tqphy_service, tqphy_status, mii_phy_reset, 96 }; 97 98 static const struct mii_phydesc tqphys[] = { 99 { MII_OUI_TDK, MII_MODEL_TDK_78Q2120, 100 MII_STR_TDK_78Q2120 }, 101 102 { 0, 0, 103 NULL }, 104 }; 105 106 int 107 tqphymatch(struct device *parent, void *match, void *aux) 108 { 109 struct mii_attach_args *ma = aux; 110 111 if (mii_phy_match(ma, tqphys) != NULL) 112 return (10); 113 114 return (0); 115 } 116 117 void 118 tqphyattach(struct device *parent, struct device *self, void *aux) 119 { 120 struct mii_softc *sc = (struct mii_softc *)self; 121 struct mii_attach_args *ma = aux; 122 struct mii_data *mii = ma->mii_data; 123 const struct mii_phydesc *mpd; 124 125 mpd = mii_phy_match(ma, tqphys); 126 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 127 128 sc->mii_inst = mii->mii_instance; 129 sc->mii_phy = ma->mii_phyno; 130 sc->mii_funcs = &tqphy_funcs; 131 sc->mii_pdata = mii; 132 sc->mii_flags = ma->mii_flags; 133 134 sc->mii_flags |= MIIF_NOLOOP; 135 136 PHY_RESET(sc); 137 138 sc->mii_capabilities = 139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 140 if (sc->mii_capabilities & BMSR_MEDIAMASK) 141 mii_phy_add_media(sc); 142 } 143 144 int 145 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 146 { 147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 148 int reg; 149 150 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 151 return (ENXIO); 152 153 switch (cmd) { 154 case MII_POLLSTAT: 155 /* 156 * If we're not polling our PHY instance, just return. 157 */ 158 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 159 return (0); 160 break; 161 162 case MII_MEDIACHG: 163 /* 164 * If the media indicates a different PHY instance, 165 * isolate ourselves. 166 */ 167 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 168 reg = PHY_READ(sc, MII_BMCR); 169 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 170 return (0); 171 } 172 173 /* 174 * If the interface is not up, don't do anything. 175 */ 176 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 177 break; 178 179 mii_phy_setmedia(sc); 180 break; 181 182 case MII_TICK: 183 /* 184 * If we're not currently selected, just return. 185 */ 186 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 187 return (0); 188 189 if (mii_phy_tick(sc) == EJUSTRETURN) 190 return (0); 191 break; 192 193 case MII_DOWN: 194 mii_phy_down(sc); 195 return (0); 196 } 197 198 /* Update the media status. */ 199 mii_phy_status(sc); 200 201 /* Callback if something changed. */ 202 mii_phy_update(sc, cmd); 203 return (0); 204 } 205 206 void 207 tqphy_status(struct mii_softc *sc) 208 { 209 struct mii_data *mii = sc->mii_pdata; 210 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 211 int bmsr, bmcr, diag; 212 213 mii->mii_media_status = IFM_AVALID; 214 mii->mii_media_active = IFM_ETHER; 215 216 bmsr = PHY_READ(sc, MII_BMSR) | 217 PHY_READ(sc, MII_BMSR); 218 if (bmsr & BMSR_LINK) 219 mii->mii_media_status |= IFM_ACTIVE; 220 221 bmcr = PHY_READ(sc, MII_BMCR); 222 if (bmcr & BMCR_ISO) { 223 mii->mii_media_active |= IFM_NONE; 224 mii->mii_media_status = 0; 225 return; 226 } 227 228 if (bmcr & BMCR_LOOP) 229 mii->mii_media_active |= IFM_LOOP; 230 231 if (bmcr & BMCR_AUTOEN) { 232 if ((bmsr & BMSR_ACOMP) == 0) { 233 /* Erg, still trying, I guess... */ 234 mii->mii_media_active |= IFM_NONE; 235 return; 236 } 237 diag = PHY_READ(sc, MII_TQPHY_DIAG); 238 if (diag & DIAG_RATE) 239 mii->mii_media_active |= IFM_100_TX; 240 else 241 mii->mii_media_active |= IFM_10_T; 242 243 if (diag & DIAG_DPLX) 244 mii->mii_media_active |= IFM_FDX; 245 else 246 mii->mii_media_active |= IFM_HDX; 247 } else 248 mii->mii_media_active = ife->ifm_media; 249 } 250