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 return(ENXIO); 104 105 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400); 106 107 return(0); 108 } 109 110 static int brgphy_attach(dev) 111 device_t dev; 112 { 113 struct mii_softc *sc; 114 struct mii_attach_args *ma; 115 struct mii_data *mii; 116 const char *sep = ""; 117 118 sc = device_get_softc(dev); 119 ma = device_get_ivars(dev); 120 sc->mii_dev = device_get_parent(dev); 121 mii = device_get_softc(sc->mii_dev); 122 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 123 124 sc->mii_inst = mii->mii_instance; 125 sc->mii_phy = ma->mii_phyno; 126 sc->mii_service = brgphy_service; 127 sc->mii_pdata = mii; 128 129 sc->mii_flags |= MIIF_NOISOLATE; 130 mii->mii_instance++; 131 132 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 133 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 134 135 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 136 BMCR_ISO); 137 #if 0 138 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 139 BMCR_LOOP|BMCR_S100); 140 #endif 141 142 mii_phy_reset(sc); 143 144 device_printf(dev, " "); 145 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst), 146 BRGPHY_BMCR_FDX); 147 PRINT("1000baseTX"); 148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst), 0); 149 PRINT("1000baseTX-FDX"); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 151 PRINT("auto"); 152 153 printf("\n"); 154 #undef ADD 155 #undef PRINT 156 157 MIIBUS_MEDIAINIT(sc->mii_dev); 158 return(0); 159 } 160 161 static int brgphy_detach(dev) 162 device_t dev; 163 { 164 struct mii_softc *sc; 165 struct mii_data *mii; 166 167 sc = device_get_softc(dev); 168 mii = device_get_softc(device_get_parent(dev)); 169 sc->mii_dev = NULL; 170 LIST_REMOVE(sc, mii_list); 171 172 return(0); 173 } 174 int 175 brgphy_service(sc, mii, cmd) 176 struct mii_softc *sc; 177 struct mii_data *mii; 178 int cmd; 179 { 180 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 181 int reg; 182 183 switch (cmd) { 184 case MII_POLLSTAT: 185 /* 186 * If we're not polling our PHY instance, just return. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 189 return (0); 190 break; 191 192 case MII_MEDIACHG: 193 /* 194 * If the media indicates a different PHY instance, 195 * isolate ourselves. 196 */ 197 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 198 reg = PHY_READ(sc, MII_BMCR); 199 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 200 return (0); 201 } 202 203 /* 204 * If the interface is not up, don't do anything. 205 */ 206 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 207 break; 208 209 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 210 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 211 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 212 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 213 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 214 215 switch (IFM_SUBTYPE(ife->ifm_media)) { 216 case IFM_AUTO: 217 #ifdef foo 218 /* 219 * If we're already in auto mode, just return. 220 */ 221 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 222 return (0); 223 #endif 224 (void) brgphy_mii_phy_auto(sc, 1); 225 break; 226 case IFM_1000_TX: 227 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 228 PHY_WRITE(sc, BRGPHY_MII_BMCR, 229 BRGPHY_BMCR_FDX|BRGPHY_BMCR_SPD1); 230 } else { 231 PHY_WRITE(sc, BRGPHY_MII_BMCR, 232 BRGPHY_BMCR_SPD1); 233 } 234 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 235 236 /* 237 * When settning the link manually, one side must 238 * be the master and the other the slave. However 239 * ifmedia doesn't give us a good way to specify 240 * this, so we fake it by using one of the LINK 241 * flags. If LINK0 is set, we program the PHY to 242 * be a master, otherwise it's a slave. 243 */ 244 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 245 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 246 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 247 } else { 248 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 249 BRGPHY_1000CTL_MSE); 250 } 251 break; 252 case IFM_100_T4: 253 case IFM_100_TX: 254 case IFM_10_T: 255 default: 256 return (EINVAL); 257 } 258 break; 259 260 case MII_TICK: 261 /* 262 * If we're not currently selected, just return. 263 */ 264 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 265 return (0); 266 267 /* 268 * Only used for autonegotiation. 269 */ 270 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 271 return (0); 272 273 /* 274 * Is the interface even up? 275 */ 276 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 277 return (0); 278 279 /* 280 * Only retry autonegotiation every 5 seconds. 281 */ 282 if (++sc->mii_ticks != 5) 283 return (0); 284 285 sc->mii_ticks = 0; 286 287 /* 288 * Check to see if we have link. If we do, we don't 289 * need to restart the autonegotiation process. Read 290 * the BMSR twice in case it's latched. 291 */ 292 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 293 if (reg & BRGPHY_AUXSTS_LINK) 294 break; 295 296 mii_phy_reset(sc); 297 if (brgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 298 return(0); 299 break; 300 } 301 302 /* Update the media status. */ 303 brgphy_status(sc); 304 305 /* Callback if something changed. */ 306 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 307 MIIBUS_STATCHG(sc->mii_dev); 308 sc->mii_active = mii->mii_media_active; 309 } 310 return (0); 311 } 312 313 void 314 brgphy_status(sc) 315 struct mii_softc *sc; 316 { 317 struct mii_data *mii = sc->mii_pdata; 318 int bmsr, bmcr, anlpar; 319 320 mii->mii_media_status = IFM_AVALID; 321 mii->mii_media_active = IFM_ETHER; 322 323 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 324 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 325 mii->mii_media_status |= IFM_ACTIVE; 326 327 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 328 329 if (bmcr & BRGPHY_BMCR_LOOP) 330 mii->mii_media_active |= IFM_LOOP; 331 332 if (bmcr & BRGPHY_BMCR_AUTOEN) { 333 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 334 /* Erg, still trying, I guess... */ 335 mii->mii_media_active |= IFM_NONE; 336 return; 337 } 338 339 mii->mii_media_active |= IFM_1000_TX; 340 anlpar = PHY_READ(sc, BRGPHY_MII_AUXSTS); 341 if ((anlpar & BRGPHY_AUXSTS_AN_RES) == BRGPHY_RES_1000FD) 342 mii->mii_media_active |= IFM_FDX; 343 if ((anlpar & BRGPHY_AUXSTS_AN_RES) == BRGPHY_RES_1000HD) 344 mii->mii_media_active |= IFM_HDX; 345 return; 346 } 347 348 mii->mii_media_active |= IFM_1000_TX; 349 if (bmcr & BRGPHY_BMCR_FDX) 350 mii->mii_media_active |= IFM_FDX; 351 else 352 mii->mii_media_active |= IFM_HDX; 353 354 return; 355 } 356 357 358 static int 359 brgphy_mii_phy_auto(mii, waitfor) 360 struct mii_softc *mii; 361 int waitfor; 362 { 363 int bmsr, i; 364 365 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 366 PHY_WRITE(mii, BRGPHY_MII_1000CTL, 367 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 368 PHY_WRITE(mii, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 369 PHY_WRITE(mii, BRGPHY_MII_BMCR, 370 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 371 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 372 } 373 374 if (waitfor) { 375 /* Wait 500ms for it to complete. */ 376 for (i = 0; i < 500; i++) { 377 if ((bmsr = PHY_READ(mii, BRGPHY_MII_BMSR)) & 378 BRGPHY_BMSR_ACOMP) 379 return (0); 380 DELAY(1000); 381 #if 0 382 if ((bmsr & BMSR_ACOMP) == 0) 383 printf("%s: autonegotiation failed to complete\n", 384 mii->mii_dev.dv_xname); 385 #endif 386 } 387 388 /* 389 * Don't need to worry about clearing MIIF_DOINGAUTO. 390 * If that's set, a timeout is pending, and it will 391 * clear the flag. 392 */ 393 return (EIO); 394 } 395 396 /* 397 * Just let it finish asynchronously. This is for the benefit of 398 * the tick handler driving autonegotiation. Don't want 500ms 399 * delays all the time while the system is running! 400 */ 401 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 402 mii->mii_flags |= MIIF_DOINGAUTO; 403 timeout(mii_phy_auto_timeout, mii, hz >> 1); 404 } 405 return (EJUSTRETURN); 406 } 407