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(device_t); 66 static int brgphy_attach(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, mii_phy_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 static int brgphy_service(struct mii_softc *, struct mii_data *, int); 88 static void brgphy_status(struct mii_softc *); 89 static int brgphy_mii_phy_auto(struct mii_softc *); 90 91 static int 92 brgphy_probe(dev) 93 device_t dev; 94 { 95 struct mii_attach_args *ma; 96 97 ma = device_get_ivars(dev); 98 99 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 100 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400) { 101 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5400); 102 return(0); 103 } 104 105 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 106 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5401) { 107 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5401); 108 return(0); 109 } 110 111 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 112 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5411) { 113 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5411); 114 return(0); 115 } 116 117 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 118 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5701) { 119 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5701); 120 return(0); 121 } 122 123 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 124 MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5703) { 125 device_set_desc(dev, MII_STR_xxBROADCOM_BCM5703); 126 return(0); 127 } 128 129 return(ENXIO); 130 } 131 132 static int 133 brgphy_attach(dev) 134 device_t dev; 135 { 136 struct mii_softc *sc; 137 struct mii_attach_args *ma; 138 struct mii_data *mii; 139 const char *sep = ""; 140 141 sc = device_get_softc(dev); 142 ma = device_get_ivars(dev); 143 sc->mii_dev = device_get_parent(dev); 144 mii = device_get_softc(sc->mii_dev); 145 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 146 147 sc->mii_inst = mii->mii_instance; 148 sc->mii_phy = ma->mii_phyno; 149 sc->mii_service = brgphy_service; 150 sc->mii_pdata = mii; 151 152 sc->mii_flags |= MIIF_NOISOLATE; 153 mii->mii_instance++; 154 155 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 156 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 157 158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 159 BMCR_ISO); 160 #if 0 161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 162 BMCR_LOOP|BMCR_S100); 163 #endif 164 165 mii_phy_reset(sc); 166 167 168 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 169 sc->mii_capabilities &= ~BMSR_ANEG; 170 device_printf(dev, " "); 171 mii_add_media(sc); 172 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst), 173 BRGPHY_BMCR_FDX); 174 PRINT(", 1000baseTX"); 175 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), 0); 176 PRINT("1000baseTX-FDX"); 177 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 178 PRINT("auto"); 179 180 printf("\n"); 181 #undef ADD 182 #undef PRINT 183 184 MIIBUS_MEDIAINIT(sc->mii_dev); 185 return(0); 186 } 187 188 static int 189 brgphy_service(sc, mii, cmd) 190 struct mii_softc *sc; 191 struct mii_data *mii; 192 int cmd; 193 { 194 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 195 int reg, speed; 196 197 switch (cmd) { 198 case MII_POLLSTAT: 199 /* 200 * If we're not polling our PHY instance, just return. 201 */ 202 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 203 return (0); 204 break; 205 206 case MII_MEDIACHG: 207 /* 208 * If the media indicates a different PHY instance, 209 * isolate ourselves. 210 */ 211 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 212 reg = PHY_READ(sc, MII_BMCR); 213 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 214 return (0); 215 } 216 217 /* 218 * If the interface is not up, don't do anything. 219 */ 220 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 221 break; 222 223 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 224 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 225 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 226 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 227 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 228 229 switch (IFM_SUBTYPE(ife->ifm_media)) { 230 case IFM_AUTO: 231 #ifdef foo 232 /* 233 * If we're already in auto mode, just return. 234 */ 235 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 236 return (0); 237 #endif 238 (void) brgphy_mii_phy_auto(sc); 239 break; 240 case IFM_1000_T: 241 speed = BRGPHY_S1000; 242 goto setit; 243 case IFM_100_TX: 244 speed = BRGPHY_S100; 245 goto setit; 246 case IFM_10_T: 247 speed = BRGPHY_S10; 248 setit: 249 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 250 PHY_WRITE(sc, BRGPHY_MII_BMCR, 251 BRGPHY_BMCR_FDX|speed); 252 } else { 253 PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); 254 } 255 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 256 257 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) 258 break; 259 260 /* 261 * When settning the link manually, one side must 262 * be the master and the other the slave. However 263 * ifmedia doesn't give us a good way to specify 264 * this, so we fake it by using one of the LINK 265 * flags. If LINK0 is set, we program the PHY to 266 * be a master, otherwise it's a slave. 267 */ 268 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 269 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 270 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 271 } else { 272 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 273 BRGPHY_1000CTL_MSE); 274 } 275 break; 276 #ifdef foo 277 case IFM_NONE: 278 PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); 279 break; 280 #endif 281 case IFM_100_T4: 282 default: 283 return (EINVAL); 284 } 285 break; 286 287 case MII_TICK: 288 /* 289 * If we're not currently selected, just return. 290 */ 291 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 292 return (0); 293 294 /* 295 * Is the interface even up? 296 */ 297 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 298 return (0); 299 300 /* 301 * Only used for autonegotiation. 302 */ 303 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 304 break; 305 306 /* 307 * Check to see if we have link. If we do, we don't 308 * need to restart the autonegotiation process. Read 309 * the BMSR twice in case it's latched. 310 */ 311 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 312 if (reg & BRGPHY_AUXSTS_LINK) 313 break; 314 315 /* 316 * Only retry autonegotiation every 5 seconds. 317 */ 318 if (++sc->mii_ticks != 5) 319 return (0); 320 321 sc->mii_ticks = 0; 322 mii_phy_reset(sc); 323 brgphy_mii_phy_auto(sc); 324 return (0); 325 } 326 327 /* Update the media status. */ 328 brgphy_status(sc); 329 330 /* Callback if something changed. */ 331 mii_phy_update(sc, cmd); 332 return (0); 333 } 334 335 static void 336 brgphy_status(sc) 337 struct mii_softc *sc; 338 { 339 struct mii_data *mii = sc->mii_pdata; 340 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 341 int bmsr, bmcr; 342 343 mii->mii_media_status = IFM_AVALID; 344 mii->mii_media_active = IFM_ETHER; 345 346 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 347 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 348 mii->mii_media_status |= IFM_ACTIVE; 349 350 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 351 352 if (bmcr & BRGPHY_BMCR_LOOP) 353 mii->mii_media_active |= IFM_LOOP; 354 355 if (bmcr & BRGPHY_BMCR_AUTOEN) { 356 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 357 /* Erg, still trying, I guess... */ 358 mii->mii_media_active |= IFM_NONE; 359 return; 360 } 361 362 switch (PHY_READ(sc, BRGPHY_MII_AUXSTS) & 363 BRGPHY_AUXSTS_AN_RES) { 364 case BRGPHY_RES_1000FD: 365 mii->mii_media_active |= IFM_1000_T | IFM_FDX; 366 break; 367 case BRGPHY_RES_1000HD: 368 mii->mii_media_active |= IFM_1000_T | IFM_HDX; 369 break; 370 case BRGPHY_RES_100FD: 371 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 372 break; 373 case BRGPHY_RES_100T4: 374 mii->mii_media_active |= IFM_100_T4; 375 break; 376 case BRGPHY_RES_100HD: 377 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 378 break; 379 case BRGPHY_RES_10FD: 380 mii->mii_media_active |= IFM_10_T | IFM_FDX; 381 break; 382 case BRGPHY_RES_10HD: 383 mii->mii_media_active |= IFM_10_T | IFM_HDX; 384 break; 385 default: 386 mii->mii_media_active |= IFM_NONE; 387 break; 388 } 389 return; 390 } 391 392 mii->mii_media_active = ife->ifm_media; 393 394 return; 395 } 396 397 398 static int 399 brgphy_mii_phy_auto(mii) 400 struct mii_softc *mii; 401 { 402 int ktcr = 0; 403 404 mii_phy_reset(mii); 405 PHY_WRITE(mii, BRGPHY_MII_BMCR, 0); 406 DELAY(1000); 407 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 408 PHY_WRITE(mii, BRGPHY_MII_1000CTL, ktcr | 409 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 410 ktcr = PHY_READ(mii, BRGPHY_MII_1000CTL); 411 DELAY(1000); 412 PHY_WRITE(mii, BRGPHY_MII_ANAR, 413 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); 414 DELAY(1000); 415 PHY_WRITE(mii, BRGPHY_MII_BMCR, 416 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 417 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 418 return (EJUSTRETURN); 419 } 420