brgphy.c revision 95673
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: head/sys/dev/mii/brgphy.c 95673 2002-04-28 20:34:20Z phk $ 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) 61static const char rcsid[] = 62 "$FreeBSD: head/sys/dev/mii/brgphy.c 95673 2002-04-28 20:34:20Z phk $"; 63#endif 64 65static int brgphy_probe (device_t); 66static int brgphy_attach (device_t); 67static int brgphy_detach (device_t); 68 69static 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 78static devclass_t brgphy_devclass; 79 80static driver_t brgphy_driver = { 81 "brgphy", 82 brgphy_methods, 83 sizeof(struct mii_softc) 84}; 85 86DRIVER_MODULE(brgphy, miibus, brgphy_driver, brgphy_devclass, 0, 0); 87 88static int brgphy_service(struct mii_softc *, struct mii_data *, int); 89static void brgphy_status(struct mii_softc *); 90static int brgphy_mii_phy_auto(struct mii_softc *, int); 91extern void mii_phy_auto_timeout(void *); 92 93static 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 127static 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 = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 163 sc->mii_capabilities &= ~BMSR_ANEG; 164 device_printf(dev, " "); 165 mii_add_media(sc); 166 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst), 167 BRGPHY_BMCR_FDX); 168 PRINT(", 1000baseTX"); 169 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), 0); 170 PRINT("1000baseTX-FDX"); 171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 172 PRINT("auto"); 173 174 printf("\n"); 175#undef ADD 176#undef PRINT 177 178 MIIBUS_MEDIAINIT(sc->mii_dev); 179 return(0); 180} 181 182static int brgphy_detach(dev) 183 device_t dev; 184{ 185 struct mii_softc *sc; 186 struct mii_data *mii; 187 188 sc = device_get_softc(dev); 189 mii = device_get_softc(device_get_parent(dev)); 190 if (sc->mii_flags & MIIF_DOINGAUTO) 191 untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch); 192 193 sc->mii_dev = NULL; 194 LIST_REMOVE(sc, mii_list); 195 196 return(0); 197} 198 199static int 200brgphy_service(sc, mii, cmd) 201 struct mii_softc *sc; 202 struct mii_data *mii; 203 int cmd; 204{ 205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 206 int reg, speed; 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 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 235 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 236 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 237 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 238 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 239 240 switch (IFM_SUBTYPE(ife->ifm_media)) { 241 case IFM_AUTO: 242#ifdef foo 243 /* 244 * If we're already in auto mode, just return. 245 */ 246 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 247 return (0); 248#endif 249 (void) brgphy_mii_phy_auto(sc, 1); 250 break; 251 case IFM_1000_T: 252 speed = BRGPHY_S1000; 253 goto setit; 254 case IFM_100_TX: 255 speed = BRGPHY_S100; 256 goto setit; 257 case IFM_10_T: 258 speed = BRGPHY_S10; 259setit: 260 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 261 PHY_WRITE(sc, BRGPHY_MII_BMCR, 262 BRGPHY_BMCR_FDX|speed); 263 } else { 264 PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); 265 } 266 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 267 268 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 269 break; 270 271 /* 272 * When settning the link manually, one side must 273 * be the master and the other the slave. However 274 * ifmedia doesn't give us a good way to specify 275 * this, so we fake it by using one of the LINK 276 * flags. If LINK0 is set, we program the PHY to 277 * be a master, otherwise it's a slave. 278 */ 279 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 280 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 281 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 282 } else { 283 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 284 BRGPHY_1000CTL_MSE); 285 } 286 break; 287#ifdef foo 288 case IFM_NONE: 289 PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); 290 break; 291#endif 292 case IFM_100_T4: 293 default: 294 return (EINVAL); 295 } 296 break; 297 298 case MII_TICK: 299 /* 300 * If we're not currently selected, just return. 301 */ 302 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 303 return (0); 304 305 /* 306 * Is the interface even up? 307 */ 308 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 309 return (0); 310 311 /* 312 * Only used for autonegotiation. 313 */ 314 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 315 break; 316 317 /* 318 * Check to see if we have link. If we do, we don't 319 * need to restart the autonegotiation process. Read 320 * the BMSR twice in case it's latched. 321 */ 322 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 323 if (reg & BRGPHY_AUXSTS_LINK) 324 break; 325 326 /* 327 * Only retry autonegotiation every 5 seconds. 328 */ 329 if (++sc->mii_ticks != 5) 330 return (0); 331 332 sc->mii_ticks = 0; 333 mii_phy_reset(sc); 334 if (brgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 335 return (0); 336 break; 337 } 338 339 /* Update the media status. */ 340 brgphy_status(sc); 341 342 /* Callback if something changed. */ 343 mii_phy_update(sc, cmd); 344 return (0); 345} 346 347static void 348brgphy_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_T | IFM_FDX; 378 break; 379 case BRGPHY_RES_1000HD: 380 mii->mii_media_active |= IFM_1000_T | 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 410static int 411brgphy_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