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: src/sys/dev/mii/xmphy.c,v 1.1.2.5 2002/11/08 21:53:49 semenu Exp $ 33 * $DragonFly: src/sys/dev/netif/mii_layer/xmphy.c,v 1.5 2004/09/18 19:32:59 dillon Exp $ 34 * 35 * $FreeBSD: src/sys/dev/mii/xmphy.c,v 1.1.2.5 2002/11/08 21:53:49 semenu Exp $ 36 */ 37 38 /* 39 * driver for the XaQti XMAC II's internal PHY. This is sort of 40 * like a 10/100 PHY, except the only thing we're really autoselecting 41 * here is full/half duplex. Speed is always 1000mbps. 42 */ 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/socket.h> 48 #include <sys/bus.h> 49 50 #include <machine/clock.h> 51 52 #include <net/if.h> 53 #include <net/if_media.h> 54 55 #include "mii.h" 56 #include "miivar.h" 57 #include "miidevs.h" 58 59 #include "xmphyreg.h" 60 61 #include "miibus_if.h" 62 63 static int xmphy_probe (device_t); 64 static int xmphy_attach (device_t); 65 static int xmphy_detach (device_t); 66 67 static device_method_t xmphy_methods[] = { 68 /* device interface */ 69 DEVMETHOD(device_probe, xmphy_probe), 70 DEVMETHOD(device_attach, xmphy_attach), 71 DEVMETHOD(device_detach, xmphy_detach), 72 DEVMETHOD(device_shutdown, bus_generic_shutdown), 73 { 0, 0 } 74 }; 75 76 static devclass_t xmphy_devclass; 77 78 static driver_t xmphy_driver = { 79 "xmphy", 80 xmphy_methods, 81 sizeof(struct mii_softc) 82 }; 83 84 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 85 86 int xmphy_service (struct mii_softc *, struct mii_data *, int); 87 void xmphy_status (struct mii_softc *); 88 89 static int xmphy_mii_phy_auto (struct mii_softc *, int); 90 extern void mii_phy_auto_timeout (void *); 91 92 static int xmphy_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_xxXAQTI && 100 MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) { 101 device_set_desc(dev, MII_STR_XAQTI_XMACII); 102 return(0); 103 } 104 105 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO && 106 MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) { 107 device_set_desc(dev, MII_STR_JATO_BASEX); 108 return(0); 109 } 110 111 return(ENXIO); 112 } 113 114 static int xmphy_attach(dev) 115 device_t dev; 116 { 117 struct mii_softc *sc; 118 struct mii_attach_args *ma; 119 struct mii_data *mii; 120 const char *sep = ""; 121 122 sc = device_get_softc(dev); 123 ma = device_get_ivars(dev); 124 mii_softc_init(sc); 125 sc->mii_dev = device_get_parent(dev); 126 mii = device_get_softc(sc->mii_dev); 127 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 128 129 sc->mii_inst = mii->mii_instance; 130 sc->mii_phy = ma->mii_phyno; 131 sc->mii_service = xmphy_service; 132 sc->mii_pdata = mii; 133 134 sc->mii_flags |= MIIF_NOISOLATE; 135 mii->mii_instance++; 136 137 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 138 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 139 140 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 141 BMCR_ISO); 142 #if 0 143 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 144 BMCR_LOOP|BMCR_S100); 145 #endif 146 147 mii_phy_reset(sc); 148 149 device_printf(dev, " "); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 151 XMPHY_BMCR_FDX); 152 PRINT("1000baseSX"); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 154 PRINT("1000baseSX-FDX"); 155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 156 PRINT("auto"); 157 158 printf("\n"); 159 #undef ADD 160 #undef PRINT 161 162 MIIBUS_MEDIAINIT(sc->mii_dev); 163 return(0); 164 } 165 166 static int xmphy_detach(dev) 167 device_t dev; 168 { 169 struct mii_softc *sc; 170 struct mii_data *mii; 171 172 sc = device_get_softc(dev); 173 mii = device_get_softc(device_get_parent(dev)); 174 if (sc->mii_flags & MIIF_DOINGAUTO) 175 callout_stop(&sc->mii_auto_ch); 176 sc->mii_dev = NULL; 177 LIST_REMOVE(sc, mii_list); 178 179 return(0); 180 } 181 int 182 xmphy_service(sc, mii, cmd) 183 struct mii_softc *sc; 184 struct mii_data *mii; 185 int cmd; 186 { 187 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 188 int reg; 189 190 switch (cmd) { 191 case MII_POLLSTAT: 192 /* 193 * If we're not polling our PHY instance, just return. 194 */ 195 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 196 return (0); 197 break; 198 199 case MII_MEDIACHG: 200 /* 201 * If the media indicates a different PHY instance, 202 * isolate ourselves. 203 */ 204 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 205 reg = PHY_READ(sc, MII_BMCR); 206 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 207 return (0); 208 } 209 210 /* 211 * If the interface is not up, don't do anything. 212 */ 213 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 214 break; 215 216 switch (IFM_SUBTYPE(ife->ifm_media)) { 217 case IFM_AUTO: 218 #ifdef foo 219 /* 220 * If we're already in auto mode, just return. 221 */ 222 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 223 return (0); 224 #endif 225 (void) xmphy_mii_phy_auto(sc, 1); 226 break; 227 case IFM_1000_SX: 228 mii_phy_reset(sc); 229 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 230 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 231 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 232 } else { 233 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 234 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 235 } 236 break; 237 case IFM_100_T4: 238 case IFM_100_TX: 239 case IFM_10_T: 240 default: 241 return (EINVAL); 242 } 243 break; 244 245 case MII_TICK: 246 /* 247 * If we're not currently selected, just return. 248 */ 249 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 250 return (0); 251 252 /* 253 * Only used for autonegotiation. 254 */ 255 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 256 return (0); 257 258 /* 259 * Is the interface even up? 260 */ 261 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 262 return (0); 263 264 /* 265 * Only retry autonegotiation every 5 seconds. 266 */ 267 if (++sc->mii_ticks != 5) 268 return (0); 269 270 sc->mii_ticks = 0; 271 272 /* 273 * Check to see if we have link. If we do, we don't 274 * need to restart the autonegotiation process. Read 275 * the BMSR twice in case it's latched. 276 */ 277 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 278 PHY_READ(sc, XMPHY_MII_BMSR); 279 if (reg & XMPHY_BMSR_LINK) 280 break; 281 282 mii_phy_reset(sc); 283 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 284 return(0); 285 break; 286 } 287 288 /* Update the media status. */ 289 xmphy_status(sc); 290 291 /* Callback if something changed. */ 292 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 293 MIIBUS_STATCHG(sc->mii_dev); 294 sc->mii_active = mii->mii_media_active; 295 } 296 return (0); 297 } 298 299 void 300 xmphy_status(sc) 301 struct mii_softc *sc; 302 { 303 struct mii_data *mii = sc->mii_pdata; 304 int bmsr, bmcr, anlpar; 305 306 mii->mii_media_status = IFM_AVALID; 307 mii->mii_media_active = IFM_ETHER; 308 309 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 310 PHY_READ(sc, XMPHY_MII_BMSR); 311 if (bmsr & XMPHY_BMSR_LINK) 312 mii->mii_media_status |= IFM_ACTIVE; 313 314 /* Do dummy read of extended status register. */ 315 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 316 317 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 318 319 if (bmcr & XMPHY_BMCR_LOOP) 320 mii->mii_media_active |= IFM_LOOP; 321 322 323 if (bmcr & XMPHY_BMCR_AUTOEN) { 324 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 325 if (bmsr & XMPHY_BMSR_LINK) { 326 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 327 return; 328 } 329 /* Erg, still trying, I guess... */ 330 mii->mii_media_active |= IFM_NONE; 331 return; 332 } 333 334 mii->mii_media_active |= IFM_1000_SX; 335 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 336 PHY_READ(sc, XMPHY_MII_ANLPAR); 337 if (anlpar & XMPHY_ANLPAR_FDX) 338 mii->mii_media_active |= IFM_FDX; 339 else 340 mii->mii_media_active |= IFM_HDX; 341 return; 342 } 343 344 mii->mii_media_active |= IFM_1000_SX; 345 if (bmcr & XMPHY_BMCR_FDX) 346 mii->mii_media_active |= IFM_FDX; 347 else 348 mii->mii_media_active |= IFM_HDX; 349 350 return; 351 } 352 353 354 static int 355 xmphy_mii_phy_auto(mii, waitfor) 356 struct mii_softc *mii; 357 int waitfor; 358 { 359 int bmsr, anar = 0, i; 360 361 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 362 anar = PHY_READ(mii, XMPHY_MII_ANAR); 363 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 364 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 365 DELAY(1000); 366 PHY_WRITE(mii, XMPHY_MII_BMCR, 367 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 368 } 369 370 if (waitfor) { 371 /* Wait 500ms for it to complete. */ 372 for (i = 0; i < 500; i++) { 373 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & 374 XMPHY_BMSR_ACOMP) 375 return (0); 376 DELAY(1000); 377 #if 0 378 if ((bmsr & BMSR_ACOMP) == 0) 379 printf("%s: autonegotiation failed to complete\n", 380 mii->mii_dev.dv_xname); 381 #endif 382 } 383 384 /* 385 * Don't need to worry about clearing MIIF_DOINGAUTO. 386 * If that's set, a timeout is pending, and it will 387 * clear the flag. 388 */ 389 return (EIO); 390 } 391 392 /* 393 * Just let it finish asynchronously. This is for the benefit of 394 * the tick handler driving autonegotiation. Don't want 500ms 395 * delays all the time while the system is running! 396 */ 397 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 398 mii->mii_flags |= MIIF_DOINGAUTO; 399 callout_reset(&mii->mii_auto_ch, hz >> 1, 400 mii_phy_auto_timeout, mii); 401 } 402 return (EJUSTRETURN); 403 } 404