1 /* $OpenBSD: brgphy.c,v 1.4 2001/04/12 04:51:27 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 2000 5 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * $FreeBSD: src/sys/dev/mii/brgphy.c,v 1.1 2000/04/22 01:58:17 wpaul Exp $ 35 */ 36 37 /* 38 * Driver for the Broadcom BCR5400 1000baseTX PHY. Speed is always 39 * 1000mbps; all we need to negotiate here is full or half duplex. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 #include <sys/malloc.h> 47 #include <sys/socket.h> 48 #include <sys/errno.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 53 #include <dev/mii/mii.h> 54 #include <dev/mii/miivar.h> 55 #include <dev/mii/miidevs.h> 56 57 #include <dev/mii/brgphyreg.h> 58 59 int brgphy_probe __P((struct device *, void *, void *)); 60 void brgphy_attach __P((struct device *, struct device *, void *)); 61 62 struct cfattach brgphy_ca = { 63 sizeof(struct mii_softc), brgphy_probe, brgphy_attach, mii_phy_detach, 64 mii_phy_activate 65 }; 66 67 struct cfdriver brgphy_cd = { 68 NULL, "brgphy", DV_DULL 69 }; 70 71 int brgphy_service __P((struct mii_softc *, struct mii_data *, int)); 72 void brgphy_status __P((struct mii_softc *)); 73 74 int brgphy_mii_phy_auto __P((struct mii_softc *, int)); 75 extern void mii_phy_auto_timeout __P((void *)); 76 77 int brgphy_probe(parent, match, aux) 78 struct device *parent; 79 void *match, *aux; 80 { 81 struct mii_attach_args *ma = aux; 82 83 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM && 84 (MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400 || 85 MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5400 || 86 MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5401 || 87 MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5411)) 88 return(10); 89 90 return(0); 91 } 92 93 void 94 brgphy_attach(parent, self, aux) 95 struct device *parent, *self; 96 void *aux; 97 { 98 struct mii_softc *sc = (struct mii_softc *)self; 99 struct mii_attach_args *ma = aux; 100 struct mii_data *mii = ma->mii_data; 101 char *model; 102 103 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5400 || 104 MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5400) 105 model = MII_STR_BROADCOM_BCM5400; 106 if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5401) 107 model = MII_STR_BROADCOM_BCM5401; 108 if (MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5411) 109 model = MII_STR_BROADCOM_BCM5411; 110 111 printf(": %s, rev. %d\n", model, MII_REV(ma->mii_id2)); 112 113 sc->mii_inst = mii->mii_instance; 114 sc->mii_phy = ma->mii_phyno; 115 sc->mii_service = brgphy_service; 116 sc->mii_status = brgphy_status; 117 sc->mii_pdata = mii; 118 sc->mii_flags |= MIIF_NOISOLATE; 119 120 mii_phy_reset(sc); 121 122 sc->mii_capabilities = 123 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 124 if (sc->mii_capabilities & BMSR_MEDIAMASK) 125 mii_phy_add_media(sc); 126 127 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 128 129 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst), 130 BRGPHY_BMCR_FDX); 131 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst), 0); 132 133 #undef ADD 134 } 135 136 int 137 brgphy_service(sc, mii, cmd) 138 struct mii_softc *sc; 139 struct mii_data *mii; 140 int cmd; 141 { 142 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 143 int reg, speed; 144 145 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 146 return (ENXIO); 147 148 switch (cmd) { 149 case MII_POLLSTAT: 150 /* 151 * If we're not polling our PHY instance, just return. 152 */ 153 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 154 return (0); 155 break; 156 157 case MII_MEDIACHG: 158 /* 159 * If the media indicates a different PHY instance, 160 * isolate ourselves. 161 */ 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 163 reg = PHY_READ(sc, MII_BMCR); 164 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 165 return (0); 166 } 167 168 /* 169 * If the interface is not up, don't do anything. 170 */ 171 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 172 break; 173 174 PHY_WRITE(sc, BRGPHY_MII_PHY_EXTCTL, 175 BRGPHY_PHY_EXTCTL_HIGH_LA|BRGPHY_PHY_EXTCTL_EN_LTR); 176 PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 177 BRGPHY_AUXCTL_LONG_PKT|BRGPHY_AUXCTL_TX_TST); 178 PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); 179 180 switch (IFM_SUBTYPE(ife->ifm_media)) { 181 case IFM_AUTO: 182 #ifdef foo 183 /* 184 * If we're already in auto mode, just return. 185 */ 186 if (PHY_READ(sc, BRGPHY_MII_BMCR) & BRGPHY_BMCR_AUTOEN) 187 return (0); 188 #endif 189 (void) brgphy_mii_phy_auto(sc, 1); 190 break; 191 case IFM_1000_TX: 192 speed = BRGPHY_S1000; 193 goto setit; 194 case IFM_100_T4: 195 speed = BRGPHY_S100; 196 goto setit; 197 case IFM_100_TX: 198 speed = BRGPHY_S100; 199 goto setit; 200 case IFM_10_T: 201 speed = BRGPHY_S10; 202 setit: 203 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 204 PHY_WRITE(sc, BRGPHY_MII_BMCR, 205 BRGPHY_BMCR_FDX|speed); 206 } else { 207 PHY_WRITE(sc, BRGPHY_MII_BMCR, speed); 208 } 209 PHY_WRITE(sc, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 210 211 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_TX) 212 break; 213 214 /* 215 * On IFM_1000_X only, 216 * when setting the link manually, one side must 217 * be the master and the other the slave. However 218 * ifmedia doesn't give us a good way to specify 219 * this, so we fake it by using one of the LINK 220 * flags. If LINK0 is set, we program the PHY to 221 * be a master, otherwise it's a slave. 222 */ 223 if ((mii->mii_ifp->if_flags & IFF_LINK0)) { 224 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 225 BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC); 226 } else { 227 PHY_WRITE(sc, BRGPHY_MII_1000CTL, 228 BRGPHY_1000CTL_MSE); 229 } 230 break; 231 default: 232 return (EINVAL); 233 } 234 break; 235 236 case MII_TICK: 237 /* 238 * If we're not currently selected, just return. 239 */ 240 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 241 return (0); 242 243 /* 244 * Only used for autonegotiation. 245 */ 246 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 247 return (0); 248 249 /* 250 * Is the interface even up? 251 */ 252 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 253 return (0); 254 255 /* 256 * Only retry autonegotiation every 5 seconds. 257 */ 258 if (++sc->mii_ticks != 5) 259 return (0); 260 261 sc->mii_ticks = 0; 262 263 /* 264 * Check to see if we have link. If we do, we don't 265 * need to restart the autonegotiation process. Read 266 * the BMSR twice in case it's latched. 267 */ 268 reg = PHY_READ(sc, BRGPHY_MII_AUXSTS); 269 if (reg & BRGPHY_AUXSTS_LINK) 270 break; 271 272 mii_phy_reset(sc); 273 if (brgphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 274 return(0); 275 break; 276 } 277 278 /* Update the media status. */ 279 brgphy_status(sc); 280 281 /* Callback if something changed. */ 282 mii_phy_update(sc, cmd); 283 return (0); 284 } 285 286 void 287 brgphy_status(sc) 288 struct mii_softc *sc; 289 { 290 struct mii_data *mii = sc->mii_pdata; 291 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 292 int bmsr, bmcr; 293 294 mii->mii_media_status = IFM_AVALID; 295 mii->mii_media_active = IFM_ETHER; 296 297 bmsr = PHY_READ(sc, BRGPHY_MII_BMSR); 298 if (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_LINK) 299 mii->mii_media_status |= IFM_ACTIVE; 300 301 bmcr = PHY_READ(sc, BRGPHY_MII_BMCR); 302 303 if (bmcr & BRGPHY_BMCR_LOOP) 304 mii->mii_media_active |= IFM_LOOP; 305 306 if (bmcr & BRGPHY_BMCR_AUTOEN) { 307 if ((bmsr & BRGPHY_BMSR_ACOMP) == 0) { 308 /* Erg, still trying, I guess... */ 309 mii->mii_media_active |= IFM_NONE; 310 return; 311 } 312 313 switch (PHY_READ(sc, BRGPHY_MII_AUXSTS) & BRGPHY_AUXSTS_AN_RES) { 314 case BRGPHY_RES_1000FD: 315 mii->mii_media_active |= IFM_1000_TX | IFM_FDX; 316 break; 317 case BRGPHY_RES_1000HD: 318 mii->mii_media_active |= IFM_1000_TX | IFM_HDX; 319 break; 320 case BRGPHY_RES_100FD: 321 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 322 break; 323 case BRGPHY_RES_100T4: 324 mii->mii_media_active |= IFM_100_T4; 325 break; 326 case BRGPHY_RES_100HD: 327 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 328 break; 329 case BRGPHY_RES_10FD: 330 mii->mii_media_active |= IFM_10_T | IFM_FDX; 331 break; 332 case BRGPHY_RES_10HD: 333 mii->mii_media_active |= IFM_10_T | IFM_HDX; 334 break; 335 } 336 return; 337 } 338 339 mii->mii_media_active = ife->ifm_media; 340 } 341 342 343 int 344 brgphy_mii_phy_auto(mii, waitfor) 345 struct mii_softc *mii; 346 int waitfor; 347 { 348 int bmsr, i; 349 350 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 351 PHY_WRITE(mii, BRGPHY_MII_1000CTL, 352 BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD); 353 PHY_WRITE(mii, BRGPHY_MII_ANAR, BRGPHY_SEL_TYPE); 354 PHY_WRITE(mii, BRGPHY_MII_BMCR, 355 BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); 356 PHY_WRITE(mii, BRGPHY_MII_IMR, 0xFF00); 357 } 358 359 if (waitfor) { 360 /* Wait 500ms for it to complete. */ 361 for (i = 0; i < 500; i++) { 362 if ((bmsr = PHY_READ(mii, BRGPHY_MII_BMSR)) & 363 BRGPHY_BMSR_ACOMP) 364 return (0); 365 DELAY(1000); 366 #if 0 367 if ((bmsr & BMSR_ACOMP) == 0) 368 printf("%s: autonegotiation failed to complete\n", 369 mii->mii_dev.dv_xname); 370 #endif 371 } 372 373 /* 374 * Don't need to worry about clearing MIIF_DOINGAUTO. 375 * If that's set, a timeout is pending, and it will 376 * clear the flag. 377 */ 378 return (EIO); 379 } 380 381 /* 382 * Just let it finish asynchronously. This is for the benefit of 383 * the tick handler driving autonegotiation. Don't want 500ms 384 * delays all the time while the system is running! 385 */ 386 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 387 mii->mii_flags |= MIIF_DOINGAUTO; 388 timeout(mii_phy_auto_timeout, mii, hz >> 1); 389 } 390 return (EJUSTRETURN); 391 } 392