1 /* $NetBSD: tqphy.c,v 1.16 2001/11/13 07:41:37 lukem 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 1.16 2001/11/13 07:41:37 lukem 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/malloc.h> 83 #include <sys/socket.h> 84 85 #include <net/if.h> 86 #include <net/if_media.h> 87 88 #include <dev/mii/mii.h> 89 #include <dev/mii/miivar.h> 90 #include <dev/mii/miidevs.h> 91 92 #include <dev/mii/tqphyreg.h> 93 94 int tqphymatch(struct device *, struct cfdata *, void *); 95 void tqphyattach(struct device *, struct device *, void *); 96 97 struct cfattach tqphy_ca = { 98 sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach, 99 mii_phy_activate 100 }; 101 102 int tqphy_service(struct mii_softc *, struct mii_data *, int); 103 void tqphy_status(struct mii_softc *); 104 105 const struct mii_phy_funcs tqphy_funcs = { 106 tqphy_service, tqphy_status, mii_phy_reset, 107 }; 108 109 const struct mii_phydesc tqphys[] = { 110 { MII_OUI_xxTSC, MII_MODEL_xxTSC_78Q2120, 111 MII_STR_xxTSC_78Q2120 }, 112 #if 0 113 { MII_OUI_xxTSC, MII_MODEL_TSC_78Q2121, 114 MII_STR_TSC_78Q2121 }, 115 #endif 116 { 0, 0, 117 NULL }, 118 }; 119 120 int 121 tqphymatch(struct device *parent, struct cfdata *match, void *aux) 122 { 123 struct mii_attach_args *ma = aux; 124 125 if (mii_phy_match(ma, tqphys) != NULL) 126 return (10); 127 128 return (0); 129 } 130 131 void 132 tqphyattach(struct device *parent, struct device *self, void *aux) 133 { 134 struct mii_softc *sc = (struct mii_softc *)self; 135 struct mii_attach_args *ma = aux; 136 struct mii_data *mii = ma->mii_data; 137 const struct mii_phydesc *mpd; 138 139 mpd = mii_phy_match(ma, tqphys); 140 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 141 142 sc->mii_inst = mii->mii_instance; 143 sc->mii_phy = ma->mii_phyno; 144 sc->mii_funcs = &tqphy_funcs; 145 sc->mii_pdata = mii; 146 sc->mii_flags = mii->mii_flags; 147 sc->mii_anegticks = 5; 148 149 /* 150 * Apparently, we can't do loopback on this PHY. 151 */ 152 sc->mii_flags |= MIIF_NOLOOP; 153 154 PHY_RESET(sc); 155 156 sc->mii_capabilities = 157 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 158 printf("%s: ", sc->mii_dev.dv_xname); 159 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 160 printf("no media present"); 161 else 162 mii_phy_add_media(sc); 163 printf("\n"); 164 } 165 166 int 167 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 168 { 169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 170 int reg; 171 172 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 173 return (ENXIO); 174 175 switch (cmd) { 176 case MII_POLLSTAT: 177 /* 178 * If we're not polling our PHY instance, just return. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 181 return (0); 182 break; 183 184 case MII_MEDIACHG: 185 /* 186 * If the media indicates a different PHY instance, 187 * isolate ourselves. 188 */ 189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 190 reg = PHY_READ(sc, MII_BMCR); 191 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 192 return (0); 193 } 194 195 /* 196 * If the interface is not up, don't do anything. 197 */ 198 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 199 break; 200 201 mii_phy_setmedia(sc); 202 break; 203 204 case MII_TICK: 205 /* 206 * If we're not currently selected, just return. 207 */ 208 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 209 return (0); 210 211 if (mii_phy_tick(sc) == EJUSTRETURN) 212 return (0); 213 break; 214 215 case MII_DOWN: 216 mii_phy_down(sc); 217 return (0); 218 } 219 220 /* Update the media status. */ 221 mii_phy_status(sc); 222 223 /* Callback if something changed. */ 224 mii_phy_update(sc, cmd); 225 return (0); 226 } 227 228 void 229 tqphy_status(struct mii_softc *sc) 230 { 231 struct mii_data *mii = sc->mii_pdata; 232 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 233 int bmsr, bmcr, diag; 234 235 mii->mii_media_status = IFM_AVALID; 236 mii->mii_media_active = IFM_ETHER; 237 238 bmsr = PHY_READ(sc, MII_BMSR) | 239 PHY_READ(sc, MII_BMSR); 240 if (bmsr & BMSR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 bmcr = PHY_READ(sc, MII_BMCR); 244 if (bmcr & BMCR_ISO) { 245 mii->mii_media_active |= IFM_NONE; 246 mii->mii_media_status = 0; 247 return; 248 } 249 250 if (bmcr & BMCR_LOOP) 251 mii->mii_media_active |= IFM_LOOP; 252 253 if (bmcr & BMCR_AUTOEN) { 254 if ((bmsr & BMSR_ACOMP) == 0) { 255 /* Erg, still trying, I guess... */ 256 mii->mii_media_active |= IFM_NONE; 257 return; 258 } 259 diag = PHY_READ(sc, MII_TQPHY_DIAG); 260 if (diag & DIAG_RATE) 261 mii->mii_media_active |= IFM_100_TX; 262 else 263 mii->mii_media_active |= IFM_10_T; 264 if (diag & DIAG_DPLX) 265 mii->mii_media_active |= IFM_FDX; 266 } else 267 mii->mii_media_active = ife->ifm_media; 268 } 269