1 /* $NetBSD: tqphy.c,v 1.43 2019/03/25 09:20:46 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 1.43 2019/03/25 09:20:46 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_PHY_DESC(xxTSC, 78Q2120), 96 #if 0 97 MII_PHY_DESC(xxTSC, 78Q2121), 98 #endif 99 MII_PHY_END, 100 }; 101 102 static int 103 tqphymatch(device_t parent, cfdata_t match, void *aux) 104 { 105 struct mii_attach_args *ma = aux; 106 107 if (mii_phy_match(ma, tqphys) != NULL) { 108 /* The DIAG register is unreliable on early revisions. */ 109 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxTSC_78Q2120 && 110 MII_REV(ma->mii_id2) <= 3) 111 return 0; 112 return 10; 113 } 114 115 return 0; 116 } 117 118 static void 119 tqphyattach(device_t parent, device_t self, void *aux) 120 { 121 struct mii_softc *sc = device_private(self); 122 struct mii_attach_args *ma = aux; 123 struct mii_data *mii = ma->mii_data; 124 const struct mii_phydesc *mpd; 125 126 mpd = mii_phy_match(ma, tqphys); 127 aprint_naive(": Media interface\n"); 128 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 129 130 sc->mii_dev = self; 131 sc->mii_inst = mii->mii_instance; 132 sc->mii_phy = ma->mii_phyno; 133 sc->mii_funcs = &tqphy_funcs; 134 sc->mii_pdata = mii; 135 sc->mii_flags = ma->mii_flags; 136 sc->mii_anegticks = MII_ANEGTICKS; 137 138 /* Apparently, we can't do loopback on this PHY. */ 139 sc->mii_flags |= MIIF_NOLOOP; 140 141 PHY_RESET(sc); 142 143 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 144 sc->mii_capabilities &= ma->mii_capmask; 145 aprint_normal_dev(self, ""); 146 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 147 aprint_error("no media present"); 148 else 149 mii_phy_add_media(sc); 150 aprint_normal("\n"); 151 } 152 153 static int 154 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 155 { 156 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 157 uint16_t reg; 158 159 switch (cmd) { 160 case MII_POLLSTAT: 161 /* If we're not polling our PHY instance, just return. */ 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 PHY_READ(sc, MII_BMCR, ®); 173 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 174 return 0; 175 } 176 177 /* If the interface is not up, don't do anything. */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 break; 180 181 mii_phy_setmedia(sc); 182 break; 183 184 case MII_TICK: 185 /* If we're not currently selected, just return. */ 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 static 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 uint16_t bmsr, bmcr, diag; 212 213 mii->mii_media_status = IFM_AVALID; 214 mii->mii_media_active = IFM_ETHER; 215 216 PHY_READ(sc, MII_BMSR, &bmsr); 217 PHY_READ(sc, MII_BMSR, &bmsr); 218 if (bmsr & BMSR_LINK) 219 mii->mii_media_status |= IFM_ACTIVE; 220 221 PHY_READ(sc, MII_BMCR, &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 PHY_READ(sc, MII_TQPHY_DIAG, &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