1 /* 2 * Copyright (c) 2000 3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 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 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 /* 36 * Driver for the Broadcom BCR5400 1000baseTX PHY. Speed is always 37 * 1000mbps; all we need to negotiate here is full or half duplex. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/malloc.h> 44 #include <sys/socket.h> 45 #include <sys/bus.h> 46 47 #include <machine/clock.h> 48 49 #include <net/if.h> 50 #include <net/if_media.h> 51 52 #include <dev/mii/mii.h> 53 #include <dev/mii/miivar.h> 54 #include <dev/mii/miidevs.h> 55 56 #include <dev/mii/brgphyreg.h> 57 58 #include "miibus_if.h" 59 60 #if !defined(lint) 61 static const char rcsid[] = 62 "$FreeBSD$"; 63 #endif 64 65 static int brgphy_probe (device_t); 66 static int brgphy_attach (device_t); 67 static int brgphy_detach (device_t); 68 69 static device_method_t brgphy_methods[] = { 70 /* device interface */ 71 DEVMETHOD(device_probe, brgphy_probe), 72 DEVMETHOD(device_attach, brgphy_attach), 73 DEVMETHOD(device_detach, brgphy_detach), 74 DEVMETHOD(device_shutdown, bus_generic_shutdown), 75 { 0, 0 } 76 }; 77 78 static devclass_t brgphy_devclass; 79 80 static driver_t brgphy_driver = { 81 "brgphy", 82 brgphy_methods, 83 sizeof(struct mii_softc) 84 }; 85 86 DRIVER_MODULE(brgphy, miibus, brgphy_driver, brgphy_devclass, 0, 0); 87 88 static int brgphy_service(struct mii_softc *, struct mii_data *, int); 89 static void brgphy_status(struct mii_softc *); 90 static int brgphy_mii_phy_auto(struct mii_softc *, int); 91 extern void mii_phy_auto_timeout(void *); 92 93 static int brgphy_probe(dev) 94 device_t dev; 95 { 96 struct mii_attach_args *ma; 97 98 ma = device_get_ivars(dev); 99 100 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 101 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400) { 102 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400); 103 return(0); 104 } 105 106 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 107 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5401) { 108 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5401); 109 return(0); 110 } 111 112 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 113 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5411) { 114 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5411); 115 return(0); 116 } 117 118 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 119 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5701) { 120 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5701); 121 return(0); 122 } 123 124 return(ENXIO); 125 } 126 127 static int brgphy_attach(dev) 128 device_t dev; 129 { 130 struct mii_softc *sc; 131 struct mii_attach_args *ma; 132 struct mii_data *mii; 133 const char *sep = ""; 134 135 sc = device_get_softc(dev); 136 ma = device_get_ivars(dev); 137 sc->mii_dev = device_get_parent(dev); 138 mii = device_get_softc(sc->mii_dev); 139 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 140 141 sc->mii_inst = mii->mii_instance; 142 sc->mii_phy = ma->mii_phyno; 143 sc->mii_service = brgphy_service; 144 sc->mii_pdata = mii; 145 146 sc->mii_flags |= MIIF_NOISOLATE; 147 mii->mii_instance++; 148 149 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 150 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 151 152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 153 BMCR_ISO); 154 #if 0 155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 156 BMCR_LOOP|BMCR_S100); 157 #endif 158 159 mii_phy_reset(sc); 160 161 162 sc->mii_capabilities = 163 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 164 device_printf(dev, " "); 165 if (sc->mii_capabilities & BMSR_MEDIAMASK) 166 mii_add_media(mii, (sc->mii_capabilities & ~BMSR_ANEG), 167 sc->mii_inst); 168 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst), 169 BRGPHY_BMCR_FDX); 170 PRINT(", 1000baseTX"); 171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst), 0); 172 PRINT("1000baseTX-FDX"); 173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 174 PRINT("auto"); 175 176 printf("\n"); 177 #undef ADD 178 #undef PRINT 179 180 MIIBUS_MEDIAINIT(sc->mii_dev); 181 return(0); 182 } 183 184 static int brgphy_detach(dev) 185 device_t dev; 186 { 187 struct mii_softc *sc; 188 struct mii_data *mii; 189 190 sc = device_get_softc(dev); 191 mii = device_get_softc(device_get_parent(dev)); 192 if (sc->mii_flags & MIIF_DOINGAUTO) 193 untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch); 194 195 sc->mii_dev = NULL; 196 LIST_REMOVE(sc, mii_list); 197 198 return(0); 199 } 200 201 static int 202 brgphy_service(sc, mii, cmd) 203 struct mii_softc *sc; 204 struct mii_data *mii; 205 int cmd; 206 { 207 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 208 int reg, speed; 209 210 switch (cmd) { 211 case MII_POLLSTAT: 212 /* 213 * If we're not polling our PHY instance, just return. 214 */ 215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 216 return (0); 217 break; 218 219 case MII_MEDIACHG: 220 /* 221 * If the media indicates a different PHY instance, 222 * isolate ourselves. 223 */ 224 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 225 reg = PHY_READ(sc, MII_BMCR); 226 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 227 return (0); 228 } 229 230 /* 231 * If the interface is not up, don't do anything. 232 */ 233 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 234 break; 235 236 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 237 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 238 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 239 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 240 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 241 242 switch (IFM_SUBTYPE(ife->ifm_media)) { 243 case IFM_AUTO: 244 #ifdef foo 245 /* 246 * If we're already in auto mode, just return. 247 */ 248 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 249 return (0); 250 #endif 251 (void) brgphy_mii_phy_auto(sc, 1); 252 break; 253 case IFM_1000_TX: 254 speed = BRGPHY_S1000; 255 goto setit; 256 case IFM_100_TX: 257 speed = BRGPHY_S100; 258 goto setit; 259 case IFM_10_T: 260 speed = BRGPHY_S10; 261 setit: 262 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 263 PHY_WRITE(sc, BRGPHY_MII_BMCR, 264 BRGPHY_BMCR_FDX|speed); 265 } else { 266 PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); 267 } 268 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 269 270 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_TX) 271 break; 272 273 /* 274 * When settning the link manually, one side must 275 * be the master and the other the slave. However 276 * ifmedia doesn't give us a good way to specify 277 * this, so we fake it by using one of the LINK 278 * flags. If LINK0 is set, we program the PHY to 279 * be a master, otherwise it's a slave. 280 */ 281 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 282 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 283 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 284 } else { 285 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 286 BRGPHY_1000CTL_MSE); 287 } 288 break; 289 #ifdef foo 290 case IFM_NONE: 291 PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); 292 break; 293 #endif 294 case IFM_100_T4: 295 default: 296 return (EINVAL); 297 } 298 break; 299 300 case MII_TICK: 301 /* 302 * If we're not currently selected, just return. 303 */ 304 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 305 return (0); 306 307 /* 308 * Is the interface even up? 309 */ 310 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 311 return (0); 312 313 /* 314 * Only used for autonegotiation. 315 */ 316 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 317 break; 318 319 /* 320 * Check to see if we have link. If we do, we don't 321 * need to restart the autonegotiation process. Read 322 * the BMSR twice in case it's latched. 323 */ 324 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 325 if (reg & BRGPHY_AUXSTS_LINK) 326 break; 327 328 /* 329 * Only retry autonegotiation every 5 seconds. 330 */ 331 if (++sc->mii_ticks != 5) 332 return (0); 333 334 sc->mii_ticks = 0; 335 mii_phy_reset(sc); 336 if (brgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 337 return (0); 338 break; 339 } 340 341 /* Update the media status. */ 342 brgphy_status(sc); 343 344 /* Callback if something changed. */ 345 mii_phy_update(sc, cmd); 346 return (0); 347 } 348 349 static void 350 brgphy_status(sc) 351 struct mii_softc *sc; 352 { 353 struct mii_data *mii = sc->mii_pdata; 354 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 355 int bmsr, bmcr; 356 357 mii->mii_media_status = IFM_AVALID; 358 mii->mii_media_active = IFM_ETHER; 359 360 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 361 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 362 mii->mii_media_status |= IFM_ACTIVE; 363 364 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 365 366 if (bmcr & BRGPHY_BMCR_LOOP) 367 mii->mii_media_active |= IFM_LOOP; 368 369 if (bmcr & BRGPHY_BMCR_AUTOEN) { 370 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 371 /* Erg, still trying, I guess... */ 372 mii->mii_media_active |= IFM_NONE; 373 return; 374 } 375 376 switch (PHY_READ(sc, BRGPHY_MII_AUXSTS) & 377 BRGPHY_AUXSTS_AN_RES) { 378 case BRGPHY_RES_1000FD: 379 mii->mii_media_active |= IFM_1000_TX | IFM_FDX; 380 break; 381 case BRGPHY_RES_1000HD: 382 mii->mii_media_active |= IFM_1000_TX | IFM_HDX; 383 break; 384 case BRGPHY_RES_100FD: 385 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 386 break; 387 case BRGPHY_RES_100T4: 388 mii->mii_media_active |= IFM_100_T4; 389 break; 390 case BRGPHY_RES_100HD: 391 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 392 break; 393 case BRGPHY_RES_10FD: 394 mii->mii_media_active |= IFM_10_T | IFM_FDX; 395 break; 396 case BRGPHY_RES_10HD: 397 mii->mii_media_active |= IFM_10_T | IFM_HDX; 398 break; 399 default: 400 mii->mii_media_active |= IFM_NONE; 401 break; 402 } 403 return; 404 } 405 406 mii->mii_media_active = ife->ifm_media; 407 408 return; 409 } 410 411 412 static int 413 brgphy_mii_phy_auto(mii, waitfor) 414 struct mii_softc *mii; 415 int waitfor; 416 { 417 int bmsr, ktcr = 0, i; 418 419 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 420 mii_phy_reset(mii); 421 PHY_WRITE(mii, BRGPHY_MII_BMCR, 0); 422 DELAY(1000); 423 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 424 PHY_WRITE(mii, BRGPHY_MII_1000CTL, ktcr | 425 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 426 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 427 DELAY(1000); 428 PHY_WRITE(mii, BRGPHY_MII_ANAR, 429 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); 430 DELAY(1000); 431 PHY_WRITE(mii, BRGPHY_MII_BMCR, 432 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 433 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 434 } 435 436 if (waitfor) { 437 /* Wait 500ms for it to complete. */ 438 for (i = 0; i < 500; i++) { 439 if ((bmsr = PHY_READ(mii, BRGPHY_MII_BMSR)) & 440 BRGPHY_BMSR_ACOMP) 441 return (0); 442 DELAY(1000); 443 #if 0 444 if ((bmsr & BMSR_ACOMP) == 0) 445 printf("%s: autonegotiation failed to complete\n", 446 mii->mii_dev.dv_xname); 447 #endif 448 } 449 450 /* 451 * Don't need to worry about clearing MIIF_DOINGAUTO. 452 * If that's set, a timeout is pending, and it will 453 * clear the flag. 454 */ 455 return (EIO); 456 } 457 458 /* 459 * Just let it finish asynchronously. This is for the benefit of 460 * the tick handler driving autonegotiation. Don't want 500ms 461 * delays all the time while the system is running! 462 */ 463 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 464 mii->mii_flags |= MIIF_DOINGAUTO; 465 mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1); 466 } 467 return (EJUSTRETURN); 468 } 469