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 1.4 2003/08/27 09:38:31 rob 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 sc->mii_dev = device_get_parent(dev); 125 mii = device_get_softc(sc->mii_dev); 126 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 127 128 sc->mii_inst = mii->mii_instance; 129 sc->mii_phy = ma->mii_phyno; 130 sc->mii_service = xmphy_service; 131 sc->mii_pdata = mii; 132 133 sc->mii_flags |= MIIF_NOISOLATE; 134 mii->mii_instance++; 135 136 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 137 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 138 139 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 140 BMCR_ISO); 141 #if 0 142 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 143 BMCR_LOOP|BMCR_S100); 144 #endif 145 146 mii_phy_reset(sc); 147 148 device_printf(dev, " "); 149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 150 XMPHY_BMCR_FDX); 151 PRINT("1000baseSX"); 152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 153 PRINT("1000baseSX-FDX"); 154 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 155 PRINT("auto"); 156 157 printf("\n"); 158 #undef ADD 159 #undef PRINT 160 161 MIIBUS_MEDIAINIT(sc->mii_dev); 162 return(0); 163 } 164 165 static int xmphy_detach(dev) 166 device_t dev; 167 { 168 struct mii_softc *sc; 169 struct mii_data *mii; 170 171 sc = device_get_softc(dev); 172 mii = device_get_softc(device_get_parent(dev)); 173 if (sc->mii_flags & MIIF_DOINGAUTO) 174 untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch); 175 sc->mii_dev = NULL; 176 LIST_REMOVE(sc, mii_list); 177 178 return(0); 179 } 180 int 181 xmphy_service(sc, mii, cmd) 182 struct mii_softc *sc; 183 struct mii_data *mii; 184 int cmd; 185 { 186 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 187 int reg; 188 189 switch (cmd) { 190 case MII_POLLSTAT: 191 /* 192 * If we're not polling our PHY instance, just return. 193 */ 194 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 195 return (0); 196 break; 197 198 case MII_MEDIACHG: 199 /* 200 * If the media indicates a different PHY instance, 201 * isolate ourselves. 202 */ 203 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 204 reg = PHY_READ(sc, MII_BMCR); 205 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 206 return (0); 207 } 208 209 /* 210 * If the interface is not up, don't do anything. 211 */ 212 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 213 break; 214 215 switch (IFM_SUBTYPE(ife->ifm_media)) { 216 case IFM_AUTO: 217 #ifdef foo 218 /* 219 * If we're already in auto mode, just return. 220 */ 221 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 222 return (0); 223 #endif 224 (void) xmphy_mii_phy_auto(sc, 1); 225 break; 226 case IFM_1000_SX: 227 mii_phy_reset(sc); 228 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 229 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 230 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 231 } else { 232 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 233 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 234 } 235 break; 236 case IFM_100_T4: 237 case IFM_100_TX: 238 case IFM_10_T: 239 default: 240 return (EINVAL); 241 } 242 break; 243 244 case MII_TICK: 245 /* 246 * If we're not currently selected, just return. 247 */ 248 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 249 return (0); 250 251 /* 252 * Only used for autonegotiation. 253 */ 254 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 255 return (0); 256 257 /* 258 * Is the interface even up? 259 */ 260 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 261 return (0); 262 263 /* 264 * Only retry autonegotiation every 5 seconds. 265 */ 266 if (++sc->mii_ticks != 5) 267 return (0); 268 269 sc->mii_ticks = 0; 270 271 /* 272 * Check to see if we have link. If we do, we don't 273 * need to restart the autonegotiation process. Read 274 * the BMSR twice in case it's latched. 275 */ 276 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 277 PHY_READ(sc, XMPHY_MII_BMSR); 278 if (reg & XMPHY_BMSR_LINK) 279 break; 280 281 mii_phy_reset(sc); 282 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 283 return(0); 284 break; 285 } 286 287 /* Update the media status. */ 288 xmphy_status(sc); 289 290 /* Callback if something changed. */ 291 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 292 MIIBUS_STATCHG(sc->mii_dev); 293 sc->mii_active = mii->mii_media_active; 294 } 295 return (0); 296 } 297 298 void 299 xmphy_status(sc) 300 struct mii_softc *sc; 301 { 302 struct mii_data *mii = sc->mii_pdata; 303 int bmsr, bmcr, anlpar; 304 305 mii->mii_media_status = IFM_AVALID; 306 mii->mii_media_active = IFM_ETHER; 307 308 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 309 PHY_READ(sc, XMPHY_MII_BMSR); 310 if (bmsr & XMPHY_BMSR_LINK) 311 mii->mii_media_status |= IFM_ACTIVE; 312 313 /* Do dummy read of extended status register. */ 314 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 315 316 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 317 318 if (bmcr & XMPHY_BMCR_LOOP) 319 mii->mii_media_active |= IFM_LOOP; 320 321 322 if (bmcr & XMPHY_BMCR_AUTOEN) { 323 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 324 if (bmsr & XMPHY_BMSR_LINK) { 325 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 326 return; 327 } 328 /* Erg, still trying, I guess... */ 329 mii->mii_media_active |= IFM_NONE; 330 return; 331 } 332 333 mii->mii_media_active |= IFM_1000_SX; 334 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 335 PHY_READ(sc, XMPHY_MII_ANLPAR); 336 if (anlpar & XMPHY_ANLPAR_FDX) 337 mii->mii_media_active |= IFM_FDX; 338 else 339 mii->mii_media_active |= IFM_HDX; 340 return; 341 } 342 343 mii->mii_media_active |= IFM_1000_SX; 344 if (bmcr & XMPHY_BMCR_FDX) 345 mii->mii_media_active |= IFM_FDX; 346 else 347 mii->mii_media_active |= IFM_HDX; 348 349 return; 350 } 351 352 353 static int 354 xmphy_mii_phy_auto(mii, waitfor) 355 struct mii_softc *mii; 356 int waitfor; 357 { 358 int bmsr, anar = 0, i; 359 360 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 361 anar = PHY_READ(mii, XMPHY_MII_ANAR); 362 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 363 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 364 DELAY(1000); 365 PHY_WRITE(mii, XMPHY_MII_BMCR, 366 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 367 } 368 369 if (waitfor) { 370 /* Wait 500ms for it to complete. */ 371 for (i = 0; i < 500; i++) { 372 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & 373 XMPHY_BMSR_ACOMP) 374 return (0); 375 DELAY(1000); 376 #if 0 377 if ((bmsr & BMSR_ACOMP) == 0) 378 printf("%s: autonegotiation failed to complete\n", 379 mii->mii_dev.dv_xname); 380 #endif 381 } 382 383 /* 384 * Don't need to worry about clearing MIIF_DOINGAUTO. 385 * If that's set, a timeout is pending, and it will 386 * clear the flag. 387 */ 388 return (EIO); 389 } 390 391 /* 392 * Just let it finish asynchronously. This is for the benefit of 393 * the tick handler driving autonegotiation. Don't want 500ms 394 * delays all the time while the system is running! 395 */ 396 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 397 mii->mii_flags |= MIIF_DOINGAUTO; 398 mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1); 399 } 400 return (EJUSTRETURN); 401 } 402