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/socket.h> 44 #include <sys/bus.h> 45 46 #include <machine/clock.h> 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 "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(device_t); 65 static int brgphy_attach(device_t); 66 67 static device_method_t brgphy_methods[] = { 68 /* device interface */ 69 DEVMETHOD(device_probe, brgphy_probe), 70 DEVMETHOD(device_attach, brgphy_attach), 71 DEVMETHOD(device_detach, mii_phy_detach), 72 DEVMETHOD(device_shutdown, bus_generic_shutdown), 73 { 0, 0 } 74 }; 75 76 static devclass_t brgphy_devclass; 77 78 static driver_t brgphy_driver = { 79 "brgphy", 80 brgphy_methods, 81 sizeof(struct mii_softc) 82 }; 83 84 DRIVER_MODULE(brgphy, miibus, brgphy_driver, brgphy_devclass, 0, 0); 85 86 static int brgphy_service(struct mii_softc *, struct mii_data *, int); 87 static void brgphy_status(struct mii_softc *); 88 static int brgphy_mii_phy_auto(struct mii_softc *); 89 90 static int 91 brgphy_probe(dev) 92 device_t dev; 93 { 94 struct mii_attach_args *ma; 95 96 ma = device_get_ivars(dev); 97 98 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 99 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400) { 100 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400); 101 return(0); 102 } 103 104 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 105 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5401) { 106 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5401); 107 return(0); 108 } 109 110 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 111 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5411) { 112 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5411); 113 return(0); 114 } 115 116 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 117 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5701) { 118 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5701); 119 return(0); 120 } 121 122 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 123 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5703) { 124 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5703); 125 return(0); 126 } 127 128 return(ENXIO); 129 } 130 131 static int 132 brgphy_attach(dev) 133 device_t dev; 134 { 135 struct mii_softc *sc; 136 struct mii_attach_args *ma; 137 struct mii_data *mii; 138 const char *sep = ""; 139 140 sc = device_get_softc(dev); 141 ma = device_get_ivars(dev); 142 sc->mii_dev = device_get_parent(dev); 143 mii = device_get_softc(sc->mii_dev); 144 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 145 146 sc->mii_inst = mii->mii_instance; 147 sc->mii_phy = ma->mii_phyno; 148 sc->mii_service = brgphy_service; 149 sc->mii_pdata = mii; 150 151 sc->mii_flags |= MIIF_NOISOLATE; 152 mii->mii_instance++; 153 154 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 155 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 156 157 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 158 BMCR_ISO); 159 #if 0 160 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 161 BMCR_LOOP|BMCR_S100); 162 #endif 163 164 mii_phy_reset(sc); 165 166 167 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 168 sc->mii_capabilities &= ~BMSR_ANEG; 169 device_printf(dev, " "); 170 mii_add_media(sc); 171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst), 172 BRGPHY_BMCR_FDX); 173 PRINT(", 1000baseTX"); 174 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), 0); 175 PRINT("1000baseTX-FDX"); 176 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 177 PRINT("auto"); 178 179 printf("\n"); 180 #undef ADD 181 #undef PRINT 182 183 MIIBUS_MEDIAINIT(sc->mii_dev); 184 return(0); 185 } 186 187 static int 188 brgphy_service(sc, mii, cmd) 189 struct mii_softc *sc; 190 struct mii_data *mii; 191 int cmd; 192 { 193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 194 int reg, speed; 195 196 switch (cmd) { 197 case MII_POLLSTAT: 198 /* 199 * If we're not polling our PHY instance, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 202 return (0); 203 break; 204 205 case MII_MEDIACHG: 206 /* 207 * If the media indicates a different PHY instance, 208 * isolate ourselves. 209 */ 210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 211 reg = PHY_READ(sc, MII_BMCR); 212 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 213 return (0); 214 } 215 216 /* 217 * If the interface is not up, don't do anything. 218 */ 219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 220 break; 221 222 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 223 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 224 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 225 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 226 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 227 228 switch (IFM_SUBTYPE(ife->ifm_media)) { 229 case IFM_AUTO: 230 #ifdef foo 231 /* 232 * If we're already in auto mode, just return. 233 */ 234 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 235 return (0); 236 #endif 237 (void) brgphy_mii_phy_auto(sc); 238 break; 239 case IFM_1000_T: 240 speed = BRGPHY_S1000; 241 goto setit; 242 case IFM_100_TX: 243 speed = BRGPHY_S100; 244 goto setit; 245 case IFM_10_T: 246 speed = BRGPHY_S10; 247 setit: 248 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 249 PHY_WRITE(sc, BRGPHY_MII_BMCR, 250 BRGPHY_BMCR_FDX|speed); 251 } else { 252 PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); 253 } 254 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 255 256 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 257 break; 258 259 /* 260 * When settning the link manually, one side must 261 * be the master and the other the slave. However 262 * ifmedia doesn't give us a good way to specify 263 * this, so we fake it by using one of the LINK 264 * flags. If LINK0 is set, we program the PHY to 265 * be a master, otherwise it's a slave. 266 */ 267 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 268 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 269 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 270 } else { 271 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 272 BRGPHY_1000CTL_MSE); 273 } 274 break; 275 #ifdef foo 276 case IFM_NONE: 277 PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); 278 break; 279 #endif 280 case IFM_100_T4: 281 default: 282 return (EINVAL); 283 } 284 break; 285 286 case MII_TICK: 287 /* 288 * If we're not currently selected, just return. 289 */ 290 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 291 return (0); 292 293 /* 294 * Is the interface even up? 295 */ 296 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 297 return (0); 298 299 /* 300 * Only used for autonegotiation. 301 */ 302 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 303 break; 304 305 /* 306 * Check to see if we have link. If we do, we don't 307 * need to restart the autonegotiation process. Read 308 * the BMSR twice in case it's latched. 309 */ 310 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 311 if (reg & BRGPHY_AUXSTS_LINK) 312 break; 313 314 /* 315 * Only retry autonegotiation every 5 seconds. 316 */ 317 if (++sc->mii_ticks != 5) 318 return (0); 319 320 sc->mii_ticks = 0; 321 mii_phy_reset(sc); 322 brgphy_mii_phy_auto(sc); 323 return (0); 324 } 325 326 /* Update the media status. */ 327 brgphy_status(sc); 328 329 /* Callback if something changed. */ 330 mii_phy_update(sc, cmd); 331 return (0); 332 } 333 334 static void 335 brgphy_status(sc) 336 struct mii_softc *sc; 337 { 338 struct mii_data *mii = sc->mii_pdata; 339 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 340 int bmsr, bmcr; 341 342 mii->mii_media_status = IFM_AVALID; 343 mii->mii_media_active = IFM_ETHER; 344 345 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 346 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 347 mii->mii_media_status |= IFM_ACTIVE; 348 349 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 350 351 if (bmcr & BRGPHY_BMCR_LOOP) 352 mii->mii_media_active |= IFM_LOOP; 353 354 if (bmcr & BRGPHY_BMCR_AUTOEN) { 355 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 356 /* Erg, still trying, I guess... */ 357 mii->mii_media_active |= IFM_NONE; 358 return; 359 } 360 361 switch (PHY_READ(sc, BRGPHY_MII_AUXSTS) & 362 BRGPHY_AUXSTS_AN_RES) { 363 case BRGPHY_RES_1000FD: 364 mii->mii_media_active |= IFM_1000_T | IFM_FDX; 365 break; 366 case BRGPHY_RES_1000HD: 367 mii->mii_media_active |= IFM_1000_T | IFM_HDX; 368 break; 369 case BRGPHY_RES_100FD: 370 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 371 break; 372 case BRGPHY_RES_100T4: 373 mii->mii_media_active |= IFM_100_T4; 374 break; 375 case BRGPHY_RES_100HD: 376 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 377 break; 378 case BRGPHY_RES_10FD: 379 mii->mii_media_active |= IFM_10_T | IFM_FDX; 380 break; 381 case BRGPHY_RES_10HD: 382 mii->mii_media_active |= IFM_10_T | IFM_HDX; 383 break; 384 default: 385 mii->mii_media_active |= IFM_NONE; 386 break; 387 } 388 return; 389 } 390 391 mii->mii_media_active = ife->ifm_media; 392 393 return; 394 } 395 396 397 static int 398 brgphy_mii_phy_auto(mii) 399 struct mii_softc *mii; 400 { 401 int ktcr = 0; 402 403 mii_phy_reset(mii); 404 PHY_WRITE(mii, BRGPHY_MII_BMCR, 0); 405 DELAY(1000); 406 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 407 PHY_WRITE(mii, BRGPHY_MII_1000CTL, ktcr | 408 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 409 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 410 DELAY(1000); 411 PHY_WRITE(mii, BRGPHY_MII_ANAR, 412 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); 413 DELAY(1000); 414 PHY_WRITE(mii, BRGPHY_MII_BMCR, 415 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 416 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 417 return (EJUSTRETURN); 418 } 419