1 /* $OpenBSD: tqphy.c,v 1.20 2024/05/13 01:15:51 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 82 const struct cfattach tqphy_ca = { 83 sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach 84 }; 85 86 struct cfdriver tqphy_cd = { 87 NULL, "tqphy", DV_DULL 88 }; 89 90 int tqphy_service(struct mii_softc *, struct mii_data *, int); 91 void tqphy_status(struct mii_softc *); 92 93 const struct mii_phy_funcs tqphy_funcs = { 94 tqphy_service, tqphy_status, mii_phy_reset, 95 }; 96 97 static const struct mii_phydesc tqphys[] = { 98 { MII_OUI_TDK, MII_MODEL_TDK_78Q2120, 99 MII_STR_TDK_78Q2120 }, 100 101 { 0, 0, 102 NULL }, 103 }; 104 105 int 106 tqphymatch(struct device *parent, void *match, void *aux) 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (mii_phy_match(ma, tqphys) != NULL) 111 return (10); 112 113 return (0); 114 } 115 116 void 117 tqphyattach(struct device *parent, struct device *self, void *aux) 118 { 119 struct mii_softc *sc = (struct mii_softc *)self; 120 struct mii_attach_args *ma = aux; 121 struct mii_data *mii = ma->mii_data; 122 const struct mii_phydesc *mpd; 123 124 mpd = mii_phy_match(ma, tqphys); 125 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 126 127 sc->mii_inst = mii->mii_instance; 128 sc->mii_phy = ma->mii_phyno; 129 sc->mii_funcs = &tqphy_funcs; 130 sc->mii_pdata = mii; 131 sc->mii_flags = ma->mii_flags; 132 133 sc->mii_flags |= MIIF_NOLOOP; 134 135 PHY_RESET(sc); 136 137 sc->mii_capabilities = 138 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 139 if (sc->mii_capabilities & BMSR_MEDIAMASK) 140 mii_phy_add_media(sc); 141 } 142 143 int 144 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 145 { 146 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 147 int reg; 148 149 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 150 return (ENXIO); 151 152 switch (cmd) { 153 case MII_POLLSTAT: 154 /* 155 * If we're not polling our PHY instance, just return. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 158 return (0); 159 break; 160 161 case MII_MEDIACHG: 162 /* 163 * If the media indicates a different PHY instance, 164 * isolate ourselves. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 167 reg = PHY_READ(sc, MII_BMCR); 168 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 169 return (0); 170 } 171 172 /* 173 * If the interface is not up, don't do anything. 174 */ 175 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 176 break; 177 178 mii_phy_setmedia(sc); 179 break; 180 181 case MII_TICK: 182 /* 183 * If we're not currently selected, just return. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 186 return (0); 187 188 if (mii_phy_tick(sc) == EJUSTRETURN) 189 return (0); 190 break; 191 192 case MII_DOWN: 193 mii_phy_down(sc); 194 return (0); 195 } 196 197 /* Update the media status. */ 198 mii_phy_status(sc); 199 200 /* Callback if something changed. */ 201 mii_phy_update(sc, cmd); 202 return (0); 203 } 204 205 void 206 tqphy_status(struct mii_softc *sc) 207 { 208 struct mii_data *mii = sc->mii_pdata; 209 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 210 int bmsr, bmcr, diag; 211 212 mii->mii_media_status = IFM_AVALID; 213 mii->mii_media_active = IFM_ETHER; 214 215 bmsr = PHY_READ(sc, MII_BMSR) | 216 PHY_READ(sc, MII_BMSR); 217 if (bmsr & BMSR_LINK) 218 mii->mii_media_status |= IFM_ACTIVE; 219 220 bmcr = PHY_READ(sc, MII_BMCR); 221 if (bmcr & BMCR_ISO) { 222 mii->mii_media_active |= IFM_NONE; 223 mii->mii_media_status = 0; 224 return; 225 } 226 227 if (bmcr & BMCR_LOOP) 228 mii->mii_media_active |= IFM_LOOP; 229 230 if (bmcr & BMCR_AUTOEN) { 231 if ((bmsr & BMSR_ACOMP) == 0) { 232 /* Erg, still trying, I guess... */ 233 mii->mii_media_active |= IFM_NONE; 234 return; 235 } 236 diag = PHY_READ(sc, MII_TQPHY_DIAG); 237 if (diag & DIAG_RATE) 238 mii->mii_media_active |= IFM_100_TX; 239 else 240 mii->mii_media_active |= IFM_10_T; 241 242 if (diag & DIAG_DPLX) 243 mii->mii_media_active |= IFM_FDX; 244 else 245 mii->mii_media_active |= IFM_HDX; 246 } else 247 mii->mii_media_active = ife->ifm_media; 248 } 249