| 1 | /* $NetBSD: tlphy.c,v 1.62 2014/06/16 16:48:16 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 | * Driver for Texas Instruments's ThunderLAN PHYs |
| 59 | */ |
| 60 | |
| 61 | #include <sys/cdefs.h> |
| 62 | __KERNEL_RCSID(0, "$NetBSD: tlphy.c,v 1.62 2014/06/16 16:48:16 msaitoh Exp $" ); |
| 63 | |
| 64 | #include <sys/param.h> |
| 65 | #include <sys/systm.h> |
| 66 | #include <sys/kernel.h> |
| 67 | #include <sys/device.h> |
| 68 | #include <sys/socket.h> |
| 69 | #include <sys/errno.h> |
| 70 | |
| 71 | #include <sys/bus.h> |
| 72 | |
| 73 | #include <net/if.h> |
| 74 | #include <net/if_media.h> |
| 75 | |
| 76 | #include <net/if_ether.h> |
| 77 | |
| 78 | #include <dev/mii/mii.h> |
| 79 | #include <dev/mii/miivar.h> |
| 80 | #include <dev/mii/miidevs.h> |
| 81 | |
| 82 | #include <dev/mii/tlphyreg.h> |
| 83 | #include <dev/mii/tlphyvar.h> |
| 84 | |
| 85 | /* ThunderLAN PHY can only be on a ThunderLAN */ |
| 86 | #include <dev/pci/if_tlvar.h> |
| 87 | |
| 88 | struct tlphy_softc { |
| 89 | struct mii_softc sc_mii; /* generic PHY */ |
| 90 | int sc_tlphycap; |
| 91 | int sc_need_acomp; |
| 92 | }; |
| 93 | |
| 94 | static int tlphymatch(device_t, cfdata_t, void *); |
| 95 | static void tlphyattach(device_t, device_t, void *); |
| 96 | |
| 97 | CFATTACH_DECL_NEW(tlphy, sizeof(struct tlphy_softc), |
| 98 | tlphymatch, tlphyattach, mii_phy_detach, mii_phy_activate); |
| 99 | |
| 100 | static int tlphy_service(struct mii_softc *, struct mii_data *, int); |
| 101 | static int tlphy_auto(struct tlphy_softc *, int); |
| 102 | static void tlphy_acomp(struct tlphy_softc *); |
| 103 | static void tlphy_status(struct mii_softc *); |
| 104 | |
| 105 | static const struct mii_phy_funcs tlphy_funcs = { |
| 106 | tlphy_service, tlphy_status, mii_phy_reset, |
| 107 | }; |
| 108 | |
| 109 | static const struct mii_phydesc tlphys[] = { |
| 110 | { MII_OUI_TI, MII_MODEL_TI_TLAN10T, |
| 111 | MII_STR_TI_TLAN10T }, |
| 112 | |
| 113 | { 0, 0, |
| 114 | NULL }, |
| 115 | }; |
| 116 | |
| 117 | static int |
| 118 | tlphymatch(device_t parent, cfdata_t match, void *aux) |
| 119 | { |
| 120 | struct mii_attach_args *ma = aux; |
| 121 | |
| 122 | if (mii_phy_match(ma, tlphys) != NULL) |
| 123 | return (10); |
| 124 | |
| 125 | return (0); |
| 126 | } |
| 127 | |
| 128 | static void |
| 129 | tlphyattach(device_t parent, device_t self, void *aux) |
| 130 | { |
| 131 | struct tlphy_softc *tsc = device_private(self); |
| 132 | struct mii_softc *sc = &tsc->sc_mii; |
| 133 | struct tl_softc *tlsc = device_private(device_parent(self)); |
| 134 | struct mii_attach_args *ma = aux; |
| 135 | struct mii_data *mii = ma->mii_data; |
| 136 | const struct mii_phydesc *mpd; |
| 137 | const char *sep = "" ; |
| 138 | |
| 139 | mpd = mii_phy_match(ma, tlphys); |
| 140 | aprint_naive(": Media interface\n" ); |
| 141 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
| 142 | |
| 143 | sc->mii_dev = self; |
| 144 | sc->mii_inst = mii->mii_instance; |
| 145 | sc->mii_phy = ma->mii_phyno; |
| 146 | sc->mii_funcs = &tlphy_funcs; |
| 147 | sc->mii_pdata = mii; |
| 148 | sc->mii_flags = ma->mii_flags; |
| 149 | sc->mii_anegticks = MII_ANEGTICKS; |
| 150 | |
| 151 | PHY_RESET(sc); |
| 152 | |
| 153 | /* |
| 154 | * Note that if we're on a device that also supports 100baseTX, |
| 155 | * we are not going to want to use the built-in 10baseT port, |
| 156 | * since there will be another PHY on the MII wired up to the |
| 157 | * UTP connector. The parent indicates this to us by specifying |
| 158 | * the TLPHY_MEDIA_NO_10_T bit. |
| 159 | */ |
| 160 | tsc->sc_tlphycap = tlsc->tl_product->tp_tlphymedia; |
| 161 | if ((tsc->sc_tlphycap & TLPHY_MEDIA_NO_10_T) == 0) |
| 162 | sc->mii_capabilities = |
| 163 | PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
| 164 | else |
| 165 | sc->mii_capabilities = 0; |
| 166 | |
| 167 | |
| 168 | #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) |
| 169 | #define PRINT(str) aprint_normal("%s%s", sep, str); sep = ", " |
| 170 | |
| 171 | aprint_normal_dev(self, "" ); |
| 172 | if (tsc->sc_tlphycap) { |
| 173 | if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) { |
| 174 | ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, |
| 175 | sc->mii_inst), 0); |
| 176 | PRINT("10base2" ); |
| 177 | } else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) { |
| 178 | ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, |
| 179 | sc->mii_inst), 0); |
| 180 | PRINT("10base5" ); |
| 181 | } |
| 182 | } |
| 183 | if (sc->mii_capabilities & BMSR_MEDIAMASK) { |
| 184 | aprint_normal("%s" , sep); |
| 185 | mii_phy_add_media(sc); |
| 186 | } else if ((tsc->sc_tlphycap & |
| 187 | (TLPHY_MEDIA_10_2 | TLPHY_MEDIA_10_5)) == 0) |
| 188 | aprint_error("no media present" ); |
| 189 | else if (!pmf_device_register(self, NULL, mii_phy_resume)) { |
| 190 | aprint_normal("\n" ); |
| 191 | aprint_error_dev(self, "couldn't establish power handler" ); |
| 192 | } |
| 193 | aprint_normal("\n" ); |
| 194 | #undef ADD |
| 195 | #undef PRINT |
| 196 | } |
| 197 | |
| 198 | static int |
| 199 | tlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
| 200 | { |
| 201 | struct tlphy_softc *tsc = (struct tlphy_softc *)sc; |
| 202 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
| 203 | int reg; |
| 204 | |
| 205 | if ((sc->mii_flags & MIIF_DOINGAUTO) == 0 && tsc->sc_need_acomp) |
| 206 | tlphy_acomp(tsc); |
| 207 | |
| 208 | switch (cmd) { |
| 209 | case MII_POLLSTAT: |
| 210 | /* |
| 211 | * If we're not polling our PHY instance, just return. |
| 212 | */ |
| 213 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 214 | return (0); |
| 215 | break; |
| 216 | |
| 217 | case MII_MEDIACHG: |
| 218 | /* |
| 219 | * If the media indicates a different PHY instance, |
| 220 | * isolate ourselves. |
| 221 | */ |
| 222 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
| 223 | reg = PHY_READ(sc, MII_BMCR); |
| 224 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
| 225 | return (0); |
| 226 | } |
| 227 | |
| 228 | /* |
| 229 | * If the interface is not up, don't do anything. |
| 230 | */ |
| 231 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
| 232 | break; |
| 233 | |
| 234 | switch (IFM_SUBTYPE(ife->ifm_media)) { |
| 235 | case IFM_AUTO: |
| 236 | /* |
| 237 | * The ThunderLAN PHY doesn't self-configure after |
| 238 | * an autonegotiation cycle, so there's no such |
| 239 | * thing as "already in auto mode". |
| 240 | */ |
| 241 | (void) tlphy_auto(tsc, 1); |
| 242 | break; |
| 243 | case IFM_10_2: |
| 244 | case IFM_10_5: |
| 245 | PHY_WRITE(sc, MII_BMCR, 0); |
| 246 | PHY_WRITE(sc, MII_TLPHY_CTRL, CTRL_AUISEL); |
| 247 | delay(100000); |
| 248 | break; |
| 249 | default: |
| 250 | PHY_WRITE(sc, MII_TLPHY_CTRL, 0); |
| 251 | delay(100000); |
| 252 | mii_phy_setmedia(sc); |
| 253 | } |
| 254 | break; |
| 255 | |
| 256 | case MII_TICK: |
| 257 | /* |
| 258 | * If we're not currently selected, just return. |
| 259 | */ |
| 260 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 261 | return (0); |
| 262 | |
| 263 | /* |
| 264 | * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?! |
| 265 | */ |
| 266 | |
| 267 | if (mii_phy_tick(sc) == EJUSTRETURN) |
| 268 | return (0); |
| 269 | break; |
| 270 | |
| 271 | case MII_DOWN: |
| 272 | mii_phy_down(sc); |
| 273 | return (0); |
| 274 | } |
| 275 | |
| 276 | /* Update the media status. */ |
| 277 | mii_phy_status(sc); |
| 278 | |
| 279 | /* Callback if something changed. */ |
| 280 | mii_phy_update(sc, cmd); |
| 281 | return (0); |
| 282 | } |
| 283 | |
| 284 | static void |
| 285 | tlphy_status(struct mii_softc *sc) |
| 286 | { |
| 287 | struct tlphy_softc *tsc = (struct tlphy_softc *)sc; |
| 288 | struct mii_data *mii = sc->mii_pdata; |
| 289 | int bmsr, bmcr, tlctrl; |
| 290 | |
| 291 | mii->mii_media_status = IFM_AVALID; |
| 292 | mii->mii_media_active = IFM_ETHER; |
| 293 | |
| 294 | bmcr = PHY_READ(sc, MII_BMCR); |
| 295 | if (bmcr & BMCR_ISO) { |
| 296 | mii->mii_media_active |= IFM_NONE; |
| 297 | mii->mii_media_status = 0; |
| 298 | return; |
| 299 | } |
| 300 | |
| 301 | tlctrl = PHY_READ(sc, MII_TLPHY_CTRL); |
| 302 | if (tlctrl & CTRL_AUISEL) { |
| 303 | if (tsc->sc_tlphycap & TLPHY_MEDIA_10_2) |
| 304 | mii->mii_media_active |= IFM_10_2; |
| 305 | else if (tsc->sc_tlphycap & TLPHY_MEDIA_10_5) |
| 306 | mii->mii_media_active |= IFM_10_5; |
| 307 | else |
| 308 | printf("%s: AUI selected with no matching media !\n" , |
| 309 | device_xname(sc->mii_dev)); |
| 310 | mii->mii_media_status |= IFM_ACTIVE; |
| 311 | return; |
| 312 | } |
| 313 | |
| 314 | bmsr = PHY_READ(sc, MII_BMSR) | |
| 315 | PHY_READ(sc, MII_BMSR); |
| 316 | if (bmsr & BMSR_LINK) |
| 317 | mii->mii_media_status |= IFM_ACTIVE; |
| 318 | |
| 319 | if (bmcr & BMCR_LOOP) |
| 320 | mii->mii_media_active |= IFM_LOOP; |
| 321 | |
| 322 | /* |
| 323 | * Grr, braindead ThunderLAN PHY doesn't have any way to |
| 324 | * tell which media is actually active. (Note it also |
| 325 | * doesn't self-configure after autonegotiation.) We |
| 326 | * just have to report what's in the BMCR. |
| 327 | */ |
| 328 | if (bmcr & BMCR_FDX) |
| 329 | mii->mii_media_active |= IFM_FDX; |
| 330 | else |
| 331 | mii->mii_media_active |= IFM_HDX; |
| 332 | mii->mii_media_active |= IFM_10_T; |
| 333 | } |
| 334 | |
| 335 | static int |
| 336 | tlphy_auto(struct tlphy_softc *tsc, int waitfor) |
| 337 | { |
| 338 | struct mii_softc *sc = &tsc->sc_mii; |
| 339 | int error; |
| 340 | |
| 341 | switch ((error = mii_phy_auto(sc, waitfor))) { |
| 342 | case EIO: |
| 343 | /* |
| 344 | * Just assume we're not in full-duplex mode. |
| 345 | * XXX Check link and try AUI/BNC? |
| 346 | */ |
| 347 | PHY_WRITE(sc, MII_BMCR, 0); |
| 348 | break; |
| 349 | |
| 350 | case EJUSTRETURN: |
| 351 | /* Flag that we need to program when it completes. */ |
| 352 | tsc->sc_need_acomp = 1; |
| 353 | break; |
| 354 | |
| 355 | default: |
| 356 | tlphy_acomp(tsc); |
| 357 | } |
| 358 | |
| 359 | return (error); |
| 360 | } |
| 361 | |
| 362 | static void |
| 363 | tlphy_acomp(struct tlphy_softc *tsc) |
| 364 | { |
| 365 | struct mii_softc *sc = &tsc->sc_mii; |
| 366 | int aner, anlpar; |
| 367 | |
| 368 | tsc->sc_need_acomp = 0; |
| 369 | |
| 370 | /* |
| 371 | * Grr, braindead ThunderLAN PHY doesn't self-configure |
| 372 | * after autonegotiation. We have to do it ourselves |
| 373 | * based on the link partner status. |
| 374 | */ |
| 375 | |
| 376 | aner = PHY_READ(sc, MII_ANER); |
| 377 | if (aner & ANER_LPAN) { |
| 378 | anlpar = PHY_READ(sc, MII_ANLPAR) & |
| 379 | PHY_READ(sc, MII_ANAR); |
| 380 | if (anlpar & ANAR_10_FD) { |
| 381 | PHY_WRITE(sc, MII_BMCR, BMCR_FDX); |
| 382 | return; |
| 383 | } |
| 384 | } |
| 385 | PHY_WRITE(sc, MII_BMCR, 0); |
| 386 | } |
| 387 | |