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 33 /* 34 * Driver for the Broadcom BCR5400 1000baseTX PHY. Speed is always 35 * 1000mbps; all we need to negotiate here is full or half duplex. 36 */ 37 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD$"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.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 "miidevs.h" 55 56 #include <dev/mii/brgphyreg.h> 57 58 #include "miibus_if.h" 59 60 static int brgphy_probe(device_t); 61 static int brgphy_attach(device_t); 62 63 static device_method_t brgphy_methods[] = { 64 /* device interface */ 65 DEVMETHOD(device_probe, brgphy_probe), 66 DEVMETHOD(device_attach, brgphy_attach), 67 DEVMETHOD(device_detach, mii_phy_detach), 68 DEVMETHOD(device_shutdown, bus_generic_shutdown), 69 { 0, 0 } 70 }; 71 72 static devclass_t brgphy_devclass; 73 74 static driver_t brgphy_driver = { 75 "brgphy", 76 brgphy_methods, 77 sizeof(struct mii_softc) 78 }; 79 80 DRIVER_MODULE(brgphy, miibus, brgphy_driver, brgphy_devclass, 0, 0); 81 82 static int brgphy_service(struct mii_softc *, struct mii_data *, int); 83 static void brgphy_status(struct mii_softc *); 84 static int brgphy_mii_phy_auto(struct mii_softc *); 85 86 static int 87 brgphy_probe(dev) 88 device_t dev; 89 { 90 struct mii_attach_args *ma; 91 92 ma = device_get_ivars(dev); 93 94 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 95 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400) { 96 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400); 97 return(0); 98 } 99 100 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 101 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5401) { 102 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5401); 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_BCM5411) { 108 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5411); 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_BCM5701) { 114 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5701); 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_BCM5703) { 120 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5703); 121 return(0); 122 } 123 124 return(ENXIO); 125 } 126 127 static int 128 brgphy_attach(dev) 129 device_t dev; 130 { 131 struct mii_softc *sc; 132 struct mii_attach_args *ma; 133 struct mii_data *mii; 134 const char *sep = ""; 135 136 sc = device_get_softc(dev); 137 ma = device_get_ivars(dev); 138 sc->mii_dev = device_get_parent(dev); 139 mii = device_get_softc(sc->mii_dev); 140 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 141 142 sc->mii_inst = mii->mii_instance; 143 sc->mii_phy = ma->mii_phyno; 144 sc->mii_service = brgphy_service; 145 sc->mii_pdata = mii; 146 147 sc->mii_flags |= MIIF_NOISOLATE; 148 mii->mii_instance++; 149 150 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 151 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 152 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 154 BMCR_ISO); 155 #if 0 156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 157 BMCR_LOOP|BMCR_S100); 158 #endif 159 160 mii_phy_reset(sc); 161 162 163 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 164 sc->mii_capabilities &= ~BMSR_ANEG; 165 device_printf(dev, " "); 166 mii_add_media(sc); 167 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst), 168 BRGPHY_BMCR_FDX); 169 PRINT(", 1000baseTX"); 170 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), 0); 171 PRINT("1000baseTX-FDX"); 172 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 173 PRINT("auto"); 174 175 printf("\n"); 176 #undef ADD 177 #undef PRINT 178 179 MIIBUS_MEDIAINIT(sc->mii_dev); 180 return(0); 181 } 182 183 static int 184 brgphy_service(sc, mii, cmd) 185 struct mii_softc *sc; 186 struct mii_data *mii; 187 int cmd; 188 { 189 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 190 int reg, speed; 191 192 switch (cmd) { 193 case MII_POLLSTAT: 194 /* 195 * If we're not polling our PHY instance, just return. 196 */ 197 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 198 return (0); 199 break; 200 201 case MII_MEDIACHG: 202 /* 203 * If the media indicates a different PHY instance, 204 * isolate ourselves. 205 */ 206 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 207 reg = PHY_READ(sc, MII_BMCR); 208 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 209 return (0); 210 } 211 212 /* 213 * If the interface is not up, don't do anything. 214 */ 215 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 216 break; 217 218 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 219 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 220 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 221 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 222 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 223 224 switch (IFM_SUBTYPE(ife->ifm_media)) { 225 case IFM_AUTO: 226 #ifdef foo 227 /* 228 * If we're already in auto mode, just return. 229 */ 230 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 231 return (0); 232 #endif 233 (void) brgphy_mii_phy_auto(sc); 234 break; 235 case IFM_1000_T: 236 speed = BRGPHY_S1000; 237 goto setit; 238 case IFM_100_TX: 239 speed = BRGPHY_S100; 240 goto setit; 241 case IFM_10_T: 242 speed = BRGPHY_S10; 243 setit: 244 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 245 PHY_WRITE(sc, BRGPHY_MII_BMCR, 246 BRGPHY_BMCR_FDX|speed); 247 } else { 248 PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); 249 } 250 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 251 252 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 253 break; 254 255 /* 256 * When settning the link manually, one side must 257 * be the master and the other the slave. However 258 * ifmedia doesn't give us a good way to specify 259 * this, so we fake it by using one of the LINK 260 * flags. If LINK0 is set, we program the PHY to 261 * be a master, otherwise it's a slave. 262 */ 263 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 264 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 265 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 266 } else { 267 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 268 BRGPHY_1000CTL_MSE); 269 } 270 break; 271 #ifdef foo 272 case IFM_NONE: 273 PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); 274 break; 275 #endif 276 case IFM_100_T4: 277 default: 278 return (EINVAL); 279 } 280 break; 281 282 case MII_TICK: 283 /* 284 * If we're not currently selected, just return. 285 */ 286 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 287 return (0); 288 289 /* 290 * Is the interface even up? 291 */ 292 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 293 return (0); 294 295 /* 296 * Only used for autonegotiation. 297 */ 298 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 299 break; 300 301 /* 302 * Check to see if we have link. If we do, we don't 303 * need to restart the autonegotiation process. Read 304 * the BMSR twice in case it's latched. 305 */ 306 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 307 if (reg & BRGPHY_AUXSTS_LINK) 308 break; 309 310 /* 311 * Only retry autonegotiation every 5 seconds. 312 */ 313 if (++sc->mii_ticks != 5) 314 return (0); 315 316 sc->mii_ticks = 0; 317 mii_phy_reset(sc); 318 brgphy_mii_phy_auto(sc); 319 return (0); 320 } 321 322 /* Update the media status. */ 323 brgphy_status(sc); 324 325 /* Callback if something changed. */ 326 mii_phy_update(sc, cmd); 327 return (0); 328 } 329 330 static void 331 brgphy_status(sc) 332 struct mii_softc *sc; 333 { 334 struct mii_data *mii = sc->mii_pdata; 335 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 336 int bmsr, bmcr; 337 338 mii->mii_media_status = IFM_AVALID; 339 mii->mii_media_active = IFM_ETHER; 340 341 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 342 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 343 mii->mii_media_status |= IFM_ACTIVE; 344 345 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 346 347 if (bmcr & BRGPHY_BMCR_LOOP) 348 mii->mii_media_active |= IFM_LOOP; 349 350 if (bmcr & BRGPHY_BMCR_AUTOEN) { 351 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 352 /* Erg, still trying, I guess... */ 353 mii->mii_media_active |= IFM_NONE; 354 return; 355 } 356 357 switch (PHY_READ(sc, BRGPHY_MII_AUXSTS) & 358 BRGPHY_AUXSTS_AN_RES) { 359 case BRGPHY_RES_1000FD: 360 mii->mii_media_active |= IFM_1000_T | IFM_FDX; 361 break; 362 case BRGPHY_RES_1000HD: 363 mii->mii_media_active |= IFM_1000_T | IFM_HDX; 364 break; 365 case BRGPHY_RES_100FD: 366 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 367 break; 368 case BRGPHY_RES_100T4: 369 mii->mii_media_active |= IFM_100_T4; 370 break; 371 case BRGPHY_RES_100HD: 372 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 373 break; 374 case BRGPHY_RES_10FD: 375 mii->mii_media_active |= IFM_10_T | IFM_FDX; 376 break; 377 case BRGPHY_RES_10HD: 378 mii->mii_media_active |= IFM_10_T | IFM_HDX; 379 break; 380 default: 381 mii->mii_media_active |= IFM_NONE; 382 break; 383 } 384 return; 385 } 386 387 mii->mii_media_active = ife->ifm_media; 388 389 return; 390 } 391 392 393 static int 394 brgphy_mii_phy_auto(mii) 395 struct mii_softc *mii; 396 { 397 int ktcr = 0; 398 399 mii_phy_reset(mii); 400 PHY_WRITE(mii, BRGPHY_MII_BMCR, 0); 401 DELAY(1000); 402 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 403 PHY_WRITE(mii, BRGPHY_MII_1000CTL, ktcr | 404 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 405 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 406 DELAY(1000); 407 PHY_WRITE(mii, BRGPHY_MII_ANAR, 408 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); 409 DELAY(1000); 410 PHY_WRITE(mii, BRGPHY_MII_BMCR, 411 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 412 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 413 return (EJUSTRETURN); 414 } 415