1 /* $NetBSD: tqphy.c,v 1.45 2020/03/15 23:04:50 thorpej 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 1.45 2020/03/15 23:04:50 thorpej 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; 136 137 /* Apparently, we can't do loopback on this PHY. */ 138 sc->mii_flags |= MIIF_NOLOOP; 139 140 mii_lock(mii); 141 142 PHY_RESET(sc); 143 144 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 145 sc->mii_capabilities &= ma->mii_capmask; 146 147 mii_unlock(mii); 148 149 mii_phy_add_media(sc); 150 } 151 152 static int 153 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 154 { 155 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 156 uint16_t reg; 157 158 KASSERT(mii_locked(mii)); 159 160 switch (cmd) { 161 case MII_POLLSTAT: 162 /* If we're not polling our PHY instance, just return. */ 163 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 164 return 0; 165 break; 166 167 case MII_MEDIACHG: 168 /* 169 * If the media indicates a different PHY instance, 170 * isolate ourselves. 171 */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 173 PHY_READ(sc, MII_BMCR, ®); 174 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 175 return 0; 176 } 177 178 /* If the interface is not up, don't do anything. */ 179 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 180 break; 181 182 mii_phy_setmedia(sc); 183 break; 184 185 case MII_TICK: 186 /* If we're not currently selected, just return. */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 188 return 0; 189 190 if (mii_phy_tick(sc) == EJUSTRETURN) 191 return 0; 192 break; 193 194 case MII_DOWN: 195 mii_phy_down(sc); 196 return 0; 197 } 198 199 /* Update the media status. */ 200 mii_phy_status(sc); 201 202 /* Callback if something changed. */ 203 mii_phy_update(sc, cmd); 204 return 0; 205 } 206 207 static void 208 tqphy_status(struct mii_softc *sc) 209 { 210 struct mii_data *mii = sc->mii_pdata; 211 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 212 uint16_t bmsr, bmcr, diag; 213 214 KASSERT(mii_locked(mii)); 215 216 mii->mii_media_status = IFM_AVALID; 217 mii->mii_media_active = IFM_ETHER; 218 219 PHY_READ(sc, MII_BMSR, &bmsr); 220 PHY_READ(sc, MII_BMSR, &bmsr); 221 if (bmsr & BMSR_LINK) 222 mii->mii_media_status |= IFM_ACTIVE; 223 224 PHY_READ(sc, MII_BMCR, &bmcr); 225 if (bmcr & BMCR_ISO) { 226 mii->mii_media_active |= IFM_NONE; 227 mii->mii_media_status = 0; 228 return; 229 } 230 231 if (bmcr & BMCR_LOOP) 232 mii->mii_media_active |= IFM_LOOP; 233 234 if (bmcr & BMCR_AUTOEN) { 235 if ((bmsr & BMSR_ACOMP) == 0) { 236 /* Erg, still trying, I guess... */ 237 mii->mii_media_active |= IFM_NONE; 238 return; 239 } 240 PHY_READ(sc, MII_TQPHY_DIAG, &diag); 241 if (diag & DIAG_RATE) 242 mii->mii_media_active |= IFM_100_TX; 243 else 244 mii->mii_media_active |= IFM_10_T; 245 246 if (diag & DIAG_DPLX) 247 mii->mii_media_active |= IFM_FDX; 248 else 249 mii->mii_media_active |= IFM_HDX; 250 } else 251 mii->mii_media_active = ife->ifm_media; 252 } 253
Indexes created Mon Sep 22 05:09:51 GMT 2025