1 /* $NetBSD: tqphy.c,v 1.40 2016/07/07 06:55:41 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 * TDK TSC78Q2120 PHY driver 59 * 60 * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf . 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: tqphy.c,v 1.40 2016/07/07 06:55:41 msaitoh Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/kernel.h> 69 #include <sys/device.h> 70 #include <sys/socket.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/tqphyreg.h> 80 81 static int tqphymatch(device_t, cfdata_t, void *); 82 static void tqphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(tqphy, sizeof(struct mii_softc), 85 tqphymatch, tqphyattach, mii_phy_detach, mii_phy_activate); 86 87 static int tqphy_service(struct mii_softc *, struct mii_data *, int); 88 static void tqphy_status(struct mii_softc *); 89 90 static const struct mii_phy_funcs tqphy_funcs = { 91 tqphy_service, tqphy_status, mii_phy_reset, 92 }; 93 94 static const struct mii_phydesc tqphys[] = { 95 { MII_OUI_xxTSC, MII_MODEL_xxTSC_78Q2120, 96 MII_STR_xxTSC_78Q2120 }, 97 #if 0 98 { MII_OUI_xxTSC, MII_MODEL_TSC_78Q2121, 99 MII_STR_TSC_78Q2121 }, 100 #endif 101 { 0, 0, 102 NULL }, 103 }; 104 105 static int 106 tqphymatch(device_t parent, cfdata_t match, void *aux) 107 { 108 struct mii_attach_args *ma = aux; 109 110 if (mii_phy_match(ma, tqphys) != NULL) { 111 /* The DIAG register is unreliable on early revisions. */ 112 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxTSC_78Q2120 && 113 MII_REV(ma->mii_id2) <= 3) 114 return (0); 115 return (10); 116 } 117 118 return (0); 119 } 120 121 static void 122 tqphyattach(device_t parent, device_t self, void *aux) 123 { 124 struct mii_softc *sc = device_private(self); 125 struct mii_attach_args *ma = aux; 126 struct mii_data *mii = ma->mii_data; 127 const struct mii_phydesc *mpd; 128 129 mpd = mii_phy_match(ma, tqphys); 130 aprint_naive(": Media interface\n"); 131 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 132 133 sc->mii_dev = self; 134 sc->mii_inst = mii->mii_instance; 135 sc->mii_phy = ma->mii_phyno; 136 sc->mii_funcs = &tqphy_funcs; 137 sc->mii_pdata = mii; 138 sc->mii_flags = ma->mii_flags; 139 sc->mii_anegticks = MII_ANEGTICKS; 140 141 /* 142 * Apparently, we can't do loopback on this PHY. 143 */ 144 sc->mii_flags |= MIIF_NOLOOP; 145 146 PHY_RESET(sc); 147 148 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 149 aprint_normal_dev(self, ""); 150 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 151 aprint_error("no media present"); 152 else 153 mii_phy_add_media(sc); 154 aprint_normal("\n"); 155 } 156 157 static int 158 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 159 { 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 int reg; 162 163 switch (cmd) { 164 case MII_POLLSTAT: 165 /* 166 * If we're not polling our PHY instance, just return. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 169 return (0); 170 break; 171 172 case MII_MEDIACHG: 173 /* 174 * If the media indicates a different PHY instance, 175 * isolate ourselves. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 178 reg = PHY_READ(sc, MII_BMCR); 179 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 180 return (0); 181 } 182 183 /* 184 * If the interface is not up, don't do anything. 185 */ 186 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 187 break; 188 189 mii_phy_setmedia(sc); 190 break; 191 192 case MII_TICK: 193 /* 194 * If we're not currently selected, just return. 195 */ 196 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 197 return (0); 198 199 if (mii_phy_tick(sc) == EJUSTRETURN) 200 return (0); 201 break; 202 203 case MII_DOWN: 204 mii_phy_down(sc); 205 return (0); 206 } 207 208 /* Update the media status. */ 209 mii_phy_status(sc); 210 211 /* Callback if something changed. */ 212 mii_phy_update(sc, cmd); 213 return (0); 214 } 215 216 static void 217 tqphy_status(struct mii_softc *sc) 218 { 219 struct mii_data *mii = sc->mii_pdata; 220 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 221 int bmsr, bmcr, diag; 222 223 mii->mii_media_status = IFM_AVALID; 224 mii->mii_media_active = IFM_ETHER; 225 226 bmsr = PHY_READ(sc, MII_BMSR) | 227 PHY_READ(sc, MII_BMSR); 228 if (bmsr & BMSR_LINK) 229 mii->mii_media_status |= IFM_ACTIVE; 230 231 bmcr = PHY_READ(sc, MII_BMCR); 232 if (bmcr & BMCR_ISO) { 233 mii->mii_media_active |= IFM_NONE; 234 mii->mii_media_status = 0; 235 return; 236 } 237 238 if (bmcr & BMCR_LOOP) 239 mii->mii_media_active |= IFM_LOOP; 240 241 if (bmcr & BMCR_AUTOEN) { 242 if ((bmsr & BMSR_ACOMP) == 0) { 243 /* Erg, still trying, I guess... */ 244 mii->mii_media_active |= IFM_NONE; 245 return; 246 } 247 diag = PHY_READ(sc, MII_TQPHY_DIAG); 248 if (diag & DIAG_RATE) 249 mii->mii_media_active |= IFM_100_TX; 250 else 251 mii->mii_media_active |= IFM_10_T; 252 253 if (diag & DIAG_DPLX) 254 mii->mii_media_active |= IFM_FDX; 255 else 256 mii->mii_media_active |= IFM_HDX; 257 } else 258 mii->mii_media_active = ife->ifm_media; 259 } 260