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 __P((device_t)); 66 static int brgphy_attach __P((device_t)); 67 static int brgphy_detach __P((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 int brgphy_service __P((struct mii_softc *, struct mii_data *, int)); 89 void brgphy_status __P((struct mii_softc *)); 90 91 static int brgphy_mii_phy_auto __P((struct mii_softc *, int)); 92 extern void mii_phy_auto_timeout __P((void *)); 93 94 static int brgphy_probe(dev) 95 device_t dev; 96 { 97 struct mii_attach_args *ma; 98 99 ma = device_get_ivars(dev); 100 101 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 102 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400) { 103 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400); 104 return(0); 105 } 106 107 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 108 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5401) { 109 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5401); 110 return(0); 111 } 112 113 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 114 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5411) { 115 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5411); 116 return(0); 117 } 118 119 return(ENXIO); 120 } 121 122 static int brgphy_attach(dev) 123 device_t dev; 124 { 125 struct mii_softc *sc; 126 struct mii_attach_args *ma; 127 struct mii_data *mii; 128 const char *sep = ""; 129 130 sc = device_get_softc(dev); 131 ma = device_get_ivars(dev); 132 sc->mii_dev = device_get_parent(dev); 133 mii = device_get_softc(sc->mii_dev); 134 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 135 136 sc->mii_inst = mii->mii_instance; 137 sc->mii_phy = ma->mii_phyno; 138 sc->mii_service = brgphy_service; 139 sc->mii_pdata = mii; 140 141 sc->mii_flags |= MIIF_NOISOLATE; 142 mii->mii_instance++; 143 144 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 145 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 146 147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 148 BMCR_ISO); 149 #if 0 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 151 BMCR_LOOP|BMCR_S100); 152 #endif 153 154 mii_phy_reset(sc); 155 156 157 sc->mii_capabilities = 158 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 159 device_printf(dev, " "); 160 if (sc->mii_capabilities & BMSR_MEDIAMASK) 161 mii_add_media(mii, (sc->mii_capabilities & ~BMSR_ANEG), 162 sc->mii_inst); 163 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst), 164 BRGPHY_BMCR_FDX); 165 PRINT(", 1000baseTX"); 166 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst), 0); 167 PRINT("1000baseTX-FDX"); 168 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 169 PRINT("auto"); 170 171 printf("\n"); 172 #undef ADD 173 #undef PRINT 174 175 MIIBUS_MEDIAINIT(sc->mii_dev); 176 return(0); 177 } 178 179 static int brgphy_detach(dev) 180 device_t dev; 181 { 182 struct mii_softc *sc; 183 struct mii_data *mii; 184 185 sc = device_get_softc(dev); 186 mii = device_get_softc(device_get_parent(dev)); 187 if (sc->mii_flags & MIIF_DOINGAUTO) 188 untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch); 189 190 sc->mii_dev = NULL; 191 LIST_REMOVE(sc, mii_list); 192 193 return(0); 194 } 195 int 196 brgphy_service(sc, mii, cmd) 197 struct mii_softc *sc; 198 struct mii_data *mii; 199 int cmd; 200 { 201 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 202 int reg, speed; 203 204 switch (cmd) { 205 case MII_POLLSTAT: 206 /* 207 * If we're not polling our PHY instance, just return. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 210 return (0); 211 break; 212 213 case MII_MEDIACHG: 214 /* 215 * If the media indicates a different PHY instance, 216 * isolate ourselves. 217 */ 218 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 219 reg = PHY_READ(sc, MII_BMCR); 220 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 221 return (0); 222 } 223 224 /* 225 * If the interface is not up, don't do anything. 226 */ 227 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 228 break; 229 230 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 231 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 232 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 233 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 234 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 235 236 switch (IFM_SUBTYPE(ife->ifm_media)) { 237 case IFM_AUTO: 238 #ifdef foo 239 /* 240 * If we're already in auto mode, just return. 241 */ 242 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 243 return (0); 244 #endif 245 (void) brgphy_mii_phy_auto(sc, 1); 246 break; 247 case IFM_1000_TX: 248 speed = BRGPHY_S1000; 249 goto setit; 250 case IFM_100_TX: 251 speed = BRGPHY_S100; 252 goto setit; 253 case IFM_10_T: 254 speed = BRGPHY_S10; 255 setit: 256 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 257 PHY_WRITE(sc, BRGPHY_MII_BMCR, 258 BRGPHY_BMCR_FDX|speed); 259 } else { 260 PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); 261 } 262 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 263 264 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_TX) 265 break; 266 267 /* 268 * When settning the link manually, one side must 269 * be the master and the other the slave. However 270 * ifmedia doesn't give us a good way to specify 271 * this, so we fake it by using one of the LINK 272 * flags. If LINK0 is set, we program the PHY to 273 * be a master, otherwise it's a slave. 274 */ 275 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 276 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 277 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 278 } else { 279 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 280 BRGPHY_1000CTL_MSE); 281 } 282 break; 283 #ifdef foo 284 case IFM_NONE: 285 PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); 286 break; 287 #endif 288 case IFM_100_T4: 289 default: 290 return (EINVAL); 291 } 292 break; 293 294 case MII_TICK: 295 /* 296 * If we're not currently selected, just return. 297 */ 298 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 299 return (0); 300 301 /* 302 * Only used for autonegotiation. 303 */ 304 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 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 retry autonegotiation every 5 seconds. 315 */ 316 if (++sc->mii_ticks != 5) 317 return (0); 318 319 sc->mii_ticks = 0; 320 321 /* 322 * Check to see if we have link. If we do, we don't 323 * need to restart the autonegotiation process. Read 324 * the BMSR twice in case it's latched. 325 */ 326 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 327 if (reg & BRGPHY_AUXSTS_LINK) 328 break; 329 330 mii_phy_reset(sc); 331 if (brgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 332 return(0); 333 break; 334 } 335 336 /* Update the media status. */ 337 brgphy_status(sc); 338 339 /* Callback if something changed. */ 340 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 341 MIIBUS_STATCHG(sc->mii_dev); 342 sc->mii_active = mii->mii_media_active; 343 } 344 return (0); 345 } 346 347 void 348 brgphy_status(sc) 349 struct mii_softc *sc; 350 { 351 struct mii_data *mii = sc->mii_pdata; 352 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 353 int bmsr, bmcr; 354 355 mii->mii_media_status = IFM_AVALID; 356 mii->mii_media_active = IFM_ETHER; 357 358 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 359 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 360 mii->mii_media_status |= IFM_ACTIVE; 361 362 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 363 364 if (bmcr & BRGPHY_BMCR_LOOP) 365 mii->mii_media_active |= IFM_LOOP; 366 367 if (bmcr & BRGPHY_BMCR_AUTOEN) { 368 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 369 /* Erg, still trying, I guess... */ 370 mii->mii_media_active |= IFM_NONE; 371 return; 372 } 373 374 switch (PHY_READ(sc, BRGPHY_MII_AUXSTS) & 375 BRGPHY_AUXSTS_AN_RES) { 376 case BRGPHY_RES_1000FD: 377 mii->mii_media_active |= IFM_1000_TX | IFM_FDX; 378 break; 379 case BRGPHY_RES_1000HD: 380 mii->mii_media_active |= IFM_1000_TX | IFM_HDX; 381 break; 382 case BRGPHY_RES_100FD: 383 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 384 break; 385 case BRGPHY_RES_100T4: 386 mii->mii_media_active |= IFM_100_T4; 387 break; 388 case BRGPHY_RES_100HD: 389 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 390 break; 391 case BRGPHY_RES_10FD: 392 mii->mii_media_active |= IFM_10_T | IFM_FDX; 393 break; 394 case BRGPHY_RES_10HD: 395 mii->mii_media_active |= IFM_10_T | IFM_HDX; 396 break; 397 default: 398 mii->mii_media_active |= IFM_NONE; 399 break; 400 } 401 return; 402 } 403 404 mii->mii_media_active = ife->ifm_media; 405 406 return; 407 } 408 409 410 static int 411 brgphy_mii_phy_auto(mii, waitfor) 412 struct mii_softc *mii; 413 int waitfor; 414 { 415 int bmsr, ktcr = 0, i; 416 417 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 418 mii_phy_reset(mii); 419 PHY_WRITE(mii, BRGPHY_MII_BMCR, 0); 420 DELAY(1000); 421 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 422 PHY_WRITE(mii, BRGPHY_MII_1000CTL, ktcr | 423 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 424 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 425 DELAY(1000); 426 PHY_WRITE(mii, BRGPHY_MII_ANAR, 427 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); 428 DELAY(1000); 429 PHY_WRITE(mii, BRGPHY_MII_BMCR, 430 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 431 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 432 } 433 434 if (waitfor) { 435 /* Wait 500ms for it to complete. */ 436 for (i = 0; i < 500; i++) { 437 if ((bmsr = PHY_READ(mii, BRGPHY_MII_BMSR)) & 438 BRGPHY_BMSR_ACOMP) 439 return (0); 440 DELAY(1000); 441 #if 0 442 if ((bmsr & BMSR_ACOMP) == 0) 443 printf("%s: autonegotiation failed to complete\n", 444 mii->mii_dev.dv_xname); 445 #endif 446 } 447 448 /* 449 * Don't need to worry about clearing MIIF_DOINGAUTO. 450 * If that's set, a timeout is pending, and it will 451 * clear the flag. 452 */ 453 return (EIO); 454 } 455 456 /* 457 * Just let it finish asynchronously. This is for the benefit of 458 * the tick handler driving autonegotiation. Don't want 500ms 459 * delays all the time while the system is running! 460 */ 461 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 462 mii->mii_flags |= MIIF_DOINGAUTO; 463 mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1); 464 } 465 return (EJUSTRETURN); 466 } 467