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 48 #include <net/if.h> 49 #include <net/if_media.h> 50 51 #include <dev/mii/mii.h> 52 #include <dev/mii/miivar.h> 53 #include <dev/mii/miidevs.h> 54 55 #include <dev/mii/brgphyreg.h> 56 57 #include "miibus_if.h" 58 59 #if !defined(lint) 60 static const char rcsid[] = 61 "$FreeBSD$"; 62 #endif 63 64 static int brgphy_probe __P((device_t)); 65 static int brgphy_attach __P((device_t)); 66 static int brgphy_detach __P((device_t)); 67 68 static device_method_t brgphy_methods[] = { 69 /* device interface */ 70 DEVMETHOD(device_probe, brgphy_probe), 71 DEVMETHOD(device_attach, brgphy_attach), 72 DEVMETHOD(device_detach, brgphy_detach), 73 DEVMETHOD(device_shutdown, bus_generic_shutdown), 74 { 0, 0 } 75 }; 76 77 static devclass_t brgphy_devclass; 78 79 static driver_t brgphy_driver = { 80 "brgphy", 81 brgphy_methods, 82 sizeof(struct mii_softc) 83 }; 84 85 DRIVER_MODULE(brgphy, miibus, brgphy_driver, brgphy_devclass, 0, 0); 86 87 int brgphy_service __P((struct mii_softc *, struct mii_data *, int)); 88 void brgphy_status __P((struct mii_softc *)); 89 90 static int brgphy_mii_phy_auto __P((struct mii_softc *, int)); 91 extern void mii_phy_auto_timeout __P((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 return(ENXIO); 103 104 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400); 105 106 return(0); 107 } 108 109 static int brgphy_attach(dev) 110 device_t dev; 111 { 112 struct mii_softc *sc; 113 struct mii_attach_args *ma; 114 struct mii_data *mii; 115 const char *sep = ""; 116 117 sc = device_get_softc(dev); 118 ma = device_get_ivars(dev); 119 sc->mii_dev = device_get_parent(dev); 120 mii = device_get_softc(sc->mii_dev); 121 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 122 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_service = brgphy_service; 126 sc->mii_pdata = mii; 127 128 sc->mii_flags |= MIIF_NOISOLATE; 129 mii->mii_instance++; 130 131 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 132 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 133 134 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 135 BMCR_ISO); 136 #if 0 137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 138 BMCR_LOOP|BMCR_S100); 139 #endif 140 141 mii_phy_reset(sc); 142 143 device_printf(dev, " "); 144 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst), 145 BRGPHY_BMCR_FDX); 146 PRINT("1000baseTX"); 147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst), 0); 148 PRINT("1000baseTX-FDX"); 149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 150 PRINT("auto"); 151 152 printf("\n"); 153 #undef ADD 154 #undef PRINT 155 156 MIIBUS_MEDIAINIT(sc->mii_dev); 157 return(0); 158 } 159 160 static int brgphy_detach(dev) 161 device_t dev; 162 { 163 struct mii_softc *sc; 164 struct mii_data *mii; 165 166 sc = device_get_softc(dev); 167 mii = device_get_softc(device_get_parent(dev)); 168 sc->mii_dev = NULL; 169 LIST_REMOVE(sc, mii_list); 170 171 return(0); 172 } 173 int 174 brgphy_service(sc, mii, cmd) 175 struct mii_softc *sc; 176 struct mii_data *mii; 177 int cmd; 178 { 179 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 180 int reg; 181 182 switch (cmd) { 183 case MII_POLLSTAT: 184 /* 185 * If we're not polling our PHY instance, just return. 186 */ 187 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 188 return (0); 189 break; 190 191 case MII_MEDIACHG: 192 /* 193 * If the media indicates a different PHY instance, 194 * isolate ourselves. 195 */ 196 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 197 reg = PHY_READ(sc, MII_BMCR); 198 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 199 return (0); 200 } 201 202 /* 203 * If the interface is not up, don't do anything. 204 */ 205 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 206 break; 207 208 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 209 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 210 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 211 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 212 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 213 214 switch (IFM_SUBTYPE(ife->ifm_media)) { 215 case IFM_AUTO: 216 #ifdef foo 217 /* 218 * If we're already in auto mode, just return. 219 */ 220 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 221 return (0); 222 #endif 223 (void) brgphy_mii_phy_auto(sc, 1); 224 break; 225 case IFM_1000_TX: 226 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 227 PHY_WRITE(sc, BRGPHY_MII_BMCR, 228 BRGPHY_BMCR_FDX|BRGPHY_BMCR_SPD1); 229 } else { 230 PHY_WRITE(sc, BRGPHY_MII_BMCR, 231 BRGPHY_BMCR_SPD1); 232 } 233 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 234 235 /* 236 * When settning the link manually, one side must 237 * be the master and the other the slave. However 238 * ifmedia doesn't give us a good way to specify 239 * this, so we fake it by using one of the LINK 240 * flags. If LINK0 is set, we program the PHY to 241 * be a master, otherwise it's a slave. 242 */ 243 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 244 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 245 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 246 } else { 247 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 248 BRGPHY_1000CTL_MSE); 249 } 250 break; 251 case IFM_100_T4: 252 case IFM_100_TX: 253 case IFM_10_T: 254 default: 255 return (EINVAL); 256 } 257 break; 258 259 case MII_TICK: 260 /* 261 * If we're not currently selected, just return. 262 */ 263 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 264 return (0); 265 266 /* 267 * Only used for autonegotiation. 268 */ 269 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 270 return (0); 271 272 /* 273 * Is the interface even up? 274 */ 275 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 276 return (0); 277 278 /* 279 * Only retry autonegotiation every 5 seconds. 280 */ 281 if (++sc->mii_ticks != 5) 282 return (0); 283 284 sc->mii_ticks = 0; 285 286 /* 287 * Check to see if we have link. If we do, we don't 288 * need to restart the autonegotiation process. Read 289 * the BMSR twice in case it's latched. 290 */ 291 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 292 if (reg & BRGPHY_AUXSTS_LINK) 293 break; 294 295 mii_phy_reset(sc); 296 if (brgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 297 return(0); 298 break; 299 } 300 301 /* Update the media status. */ 302 brgphy_status(sc); 303 304 /* Callback if something changed. */ 305 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 306 MIIBUS_STATCHG(sc->mii_dev); 307 sc->mii_active = mii->mii_media_active; 308 } 309 return (0); 310 } 311 312 void 313 brgphy_status(sc) 314 struct mii_softc *sc; 315 { 316 struct mii_data *mii = sc->mii_pdata; 317 int bmsr, bmcr, anlpar; 318 319 mii->mii_media_status = IFM_AVALID; 320 mii->mii_media_active = IFM_ETHER; 321 322 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 323 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 324 mii->mii_media_status |= IFM_ACTIVE; 325 326 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 327 328 if (bmcr & BRGPHY_BMCR_LOOP) 329 mii->mii_media_active |= IFM_LOOP; 330 331 if (bmcr & BRGPHY_BMCR_AUTOEN) { 332 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 333 /* Erg, still trying, I guess... */ 334 mii->mii_media_active |= IFM_NONE; 335 return; 336 } 337 338 mii->mii_media_active |= IFM_1000_TX; 339 anlpar = PHY_READ(sc, BRGPHY_MII_AUXSTS); 340 if ((anlpar & BRGPHY_AUXSTS_AN_RES) == BRGPHY_RES_1000FD) 341 mii->mii_media_active |= IFM_FDX; 342 if ((anlpar & BRGPHY_AUXSTS_AN_RES) == BRGPHY_RES_1000HD) 343 mii->mii_media_active |= IFM_HDX; 344 return; 345 } 346 347 mii->mii_media_active |= IFM_1000_TX; 348 if (bmcr & BRGPHY_BMCR_FDX) 349 mii->mii_media_active |= IFM_FDX; 350 else 351 mii->mii_media_active |= IFM_HDX; 352 353 return; 354 } 355 356 357 static int 358 brgphy_mii_phy_auto(mii, waitfor) 359 struct mii_softc *mii; 360 int waitfor; 361 { 362 int bmsr, i; 363 364 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 365 PHY_WRITE(mii, BRGPHY_MII_1000CTL, 366 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 367 PHY_WRITE(mii, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 368 PHY_WRITE(mii, BRGPHY_MII_BMCR, 369 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 370 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 371 } 372 373 if (waitfor) { 374 /* Wait 500ms for it to complete. */ 375 for (i = 0; i < 500; i++) { 376 if ((bmsr = PHY_READ(mii, BRGPHY_MII_BMSR)) & 377 BRGPHY_BMSR_ACOMP) 378 return (0); 379 DELAY(1000); 380 #if 0 381 if ((bmsr & BMSR_ACOMP) == 0) 382 printf("%s: autonegotiation failed to complete\n", 383 mii->mii_dev.dv_xname); 384 #endif 385 } 386 387 /* 388 * Don't need to worry about clearing MIIF_DOINGAUTO. 389 * If that's set, a timeout is pending, and it will 390 * clear the flag. 391 */ 392 return (EIO); 393 } 394 395 /* 396 * Just let it finish asynchronously. This is for the benefit of 397 * the tick handler driving autonegotiation. Don't want 500ms 398 * delays all the time while the system is running! 399 */ 400 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 401 mii->mii_flags |= MIIF_DOINGAUTO; 402 timeout(mii_phy_auto_timeout, mii, hz >> 1); 403 } 404 return (EJUSTRETURN); 405 } 406