1 /* $NetBSD: tqphy.c,v 1.32 2007/12/09 20:28:04 jmcneill 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Manuel Bouyer. 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * TDK TSC78Q2120 PHY driver 71 * 72 * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf . 73 */ 74 75 #include <sys/cdefs.h> 76 __KERNEL_RCSID(0, "$NetBSD: tqphy.c,v 1.32 2007/12/09 20:28:04 jmcneill Exp $"); 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/device.h> 82 #include <sys/socket.h> 83 84 #include <net/if.h> 85 #include <net/if_media.h> 86 87 #include <dev/mii/mii.h> 88 #include <dev/mii/miivar.h> 89 #include <dev/mii/miidevs.h> 90 91 #include <dev/mii/tqphyreg.h> 92 93 static int tqphymatch(struct device *, struct cfdata *, void *); 94 static void tqphyattach(struct device *, struct device *, void *); 95 96 CFATTACH_DECL(tqphy, sizeof(struct mii_softc), 97 tqphymatch, tqphyattach, mii_phy_detach, mii_phy_activate); 98 99 static int tqphy_service(struct mii_softc *, struct mii_data *, int); 100 static void tqphy_status(struct mii_softc *); 101 102 static const struct mii_phy_funcs tqphy_funcs = { 103 tqphy_service, tqphy_status, mii_phy_reset, 104 }; 105 106 static const struct mii_phydesc tqphys[] = { 107 { MII_OUI_xxTSC, MII_MODEL_xxTSC_78Q2120, 108 MII_STR_xxTSC_78Q2120 }, 109 #if 0 110 { MII_OUI_xxTSC, MII_MODEL_TSC_78Q2121, 111 MII_STR_TSC_78Q2121 }, 112 #endif 113 { 0, 0, 114 NULL }, 115 }; 116 117 static int 118 tqphymatch(struct device *parent, struct cfdata *match, 119 void *aux) 120 { 121 struct mii_attach_args *ma = aux; 122 123 if (mii_phy_match(ma, tqphys) != NULL) { 124 /* The DIAG register is unreliable on early revisions. */ 125 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxTSC_78Q2120 && 126 MII_REV(ma->mii_id2) <= 3) 127 return (0); 128 return (10); 129 } 130 131 return (0); 132 } 133 134 static void 135 tqphyattach(struct device *parent, struct device *self, void *aux) 136 { 137 struct mii_softc *sc = device_private(self); 138 struct mii_attach_args *ma = aux; 139 struct mii_data *mii = ma->mii_data; 140 const struct mii_phydesc *mpd; 141 142 mpd = mii_phy_match(ma, tqphys); 143 aprint_naive(": Media interface\n"); 144 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 145 146 sc->mii_inst = mii->mii_instance; 147 sc->mii_phy = ma->mii_phyno; 148 sc->mii_funcs = &tqphy_funcs; 149 sc->mii_pdata = mii; 150 sc->mii_flags = ma->mii_flags; 151 sc->mii_anegticks = MII_ANEGTICKS; 152 153 /* 154 * Apparently, we can't do loopback on this PHY. 155 */ 156 sc->mii_flags |= MIIF_NOLOOP; 157 158 PHY_RESET(sc); 159 160 sc->mii_capabilities = 161 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 162 aprint_normal("%s: ", sc->mii_dev.dv_xname); 163 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 164 aprint_error("no media present"); 165 else 166 mii_phy_add_media(sc); 167 aprint_normal("\n"); 168 169 if (!pmf_device_register(self, NULL, mii_phy_resume)) 170 aprint_error_dev(self, "couldn't establish power handler\n"); 171 } 172 173 static int 174 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 175 { 176 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 177 int reg; 178 179 if (!device_is_active(&sc->mii_dev)) 180 return (ENXIO); 181 182 switch (cmd) { 183 case MII_POLLSTAT: 184 /* 185 * If we're not polling our PHY instance, just return. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 188 return (0); 189 break; 190 191 case MII_MEDIACHG: 192 /* 193 * If the media indicates a different PHY instance, 194 * isolate ourselves. 195 */ 196 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 197 reg = PHY_READ(sc, MII_BMCR); 198 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 199 return (0); 200 } 201 202 /* 203 * If the interface is not up, don't do anything. 204 */ 205 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 206 break; 207 208 mii_phy_setmedia(sc); 209 break; 210 211 case MII_TICK: 212 /* 213 * If we're not currently selected, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return (0); 217 218 if (mii_phy_tick(sc) == EJUSTRETURN) 219 return (0); 220 break; 221 222 case MII_DOWN: 223 mii_phy_down(sc); 224 return (0); 225 } 226 227 /* Update the media status. */ 228 mii_phy_status(sc); 229 230 /* Callback if something changed. */ 231 mii_phy_update(sc, cmd); 232 return (0); 233 } 234 235 static void 236 tqphy_status(struct mii_softc *sc) 237 { 238 struct mii_data *mii = sc->mii_pdata; 239 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 240 int bmsr, bmcr, diag; 241 242 mii->mii_media_status = IFM_AVALID; 243 mii->mii_media_active = IFM_ETHER; 244 245 bmsr = PHY_READ(sc, MII_BMSR) | 246 PHY_READ(sc, MII_BMSR); 247 if (bmsr & BMSR_LINK) 248 mii->mii_media_status |= IFM_ACTIVE; 249 250 bmcr = PHY_READ(sc, MII_BMCR); 251 if (bmcr & BMCR_ISO) { 252 mii->mii_media_active |= IFM_NONE; 253 mii->mii_media_status = 0; 254 return; 255 } 256 257 if (bmcr & BMCR_LOOP) 258 mii->mii_media_active |= IFM_LOOP; 259 260 if (bmcr & BMCR_AUTOEN) { 261 if ((bmsr & BMSR_ACOMP) == 0) { 262 /* Erg, still trying, I guess... */ 263 mii->mii_media_active |= IFM_NONE; 264 return; 265 } 266 diag = PHY_READ(sc, MII_TQPHY_DIAG); 267 if (diag & DIAG_RATE) 268 mii->mii_media_active |= IFM_100_TX; 269 else 270 mii->mii_media_active |= IFM_10_T; 271 if (diag & DIAG_DPLX) 272 mii->mii_media_active |= IFM_FDX; 273 } else 274 mii->mii_media_active = ife->ifm_media; 275 } 276