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 */ 34 35 /* 36 * driver for the XaQti XMAC II's internal PHY. This is sort of 37 * like a 10/100 PHY, except the only thing we're really autoselecting 38 * here is full/half duplex. Speed is always 1000mbps. 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.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/xmphyreg.h> 57 58 #include "miibus_if.h" 59 60 #if !defined(lint) 61 static const char rcsid[] = 62 "$FreeBSD: src/sys/dev/mii/xmphy.c,v 1.1.2.5 2002/11/08 21:53:49 semenu Exp $"; 63 #endif 64 65 static int xmphy_probe __P((device_t)); 66 static int xmphy_attach __P((device_t)); 67 static int xmphy_detach __P((device_t)); 68 69 static device_method_t xmphy_methods[] = { 70 /* device interface */ 71 DEVMETHOD(device_probe, xmphy_probe), 72 DEVMETHOD(device_attach, xmphy_attach), 73 DEVMETHOD(device_detach, xmphy_detach), 74 DEVMETHOD(device_shutdown, bus_generic_shutdown), 75 { 0, 0 } 76 }; 77 78 static devclass_t xmphy_devclass; 79 80 static driver_t xmphy_driver = { 81 "xmphy", 82 xmphy_methods, 83 sizeof(struct mii_softc) 84 }; 85 86 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 87 88 int xmphy_service __P((struct mii_softc *, struct mii_data *, int)); 89 void xmphy_status __P((struct mii_softc *)); 90 91 static int xmphy_mii_phy_auto __P((struct mii_softc *, int)); 92 extern void mii_phy_auto_timeout __P((void *)); 93 94 static int xmphy_probe(dev) 95 device_t dev; 96 { 97 struct mii_attach_args *ma; 98 99 ma = device_get_ivars(dev); 100 101 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI && 102 MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) { 103 device_set_desc(dev, MII_STR_XAQTI_XMACII); 104 return(0); 105 } 106 107 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO && 108 MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) { 109 device_set_desc(dev, MII_STR_JATO_BASEX); 110 return(0); 111 } 112 113 return(ENXIO); 114 } 115 116 static int xmphy_attach(dev) 117 device_t dev; 118 { 119 struct mii_softc *sc; 120 struct mii_attach_args *ma; 121 struct mii_data *mii; 122 const char *sep = ""; 123 124 sc = device_get_softc(dev); 125 ma = device_get_ivars(dev); 126 sc->mii_dev = device_get_parent(dev); 127 mii = device_get_softc(sc->mii_dev); 128 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 129 130 sc->mii_inst = mii->mii_instance; 131 sc->mii_phy = ma->mii_phyno; 132 sc->mii_service = xmphy_service; 133 sc->mii_pdata = mii; 134 135 sc->mii_flags |= MIIF_NOISOLATE; 136 mii->mii_instance++; 137 138 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 139 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 140 141 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 142 BMCR_ISO); 143 #if 0 144 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 145 BMCR_LOOP|BMCR_S100); 146 #endif 147 148 mii_phy_reset(sc); 149 150 device_printf(dev, " "); 151 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 152 XMPHY_BMCR_FDX); 153 PRINT("1000baseSX"); 154 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 155 PRINT("1000baseSX-FDX"); 156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 157 PRINT("auto"); 158 159 printf("\n"); 160 #undef ADD 161 #undef PRINT 162 163 MIIBUS_MEDIAINIT(sc->mii_dev); 164 return(0); 165 } 166 167 static int xmphy_detach(dev) 168 device_t dev; 169 { 170 struct mii_softc *sc; 171 struct mii_data *mii; 172 173 sc = device_get_softc(dev); 174 mii = device_get_softc(device_get_parent(dev)); 175 if (sc->mii_flags & MIIF_DOINGAUTO) 176 untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch); 177 sc->mii_dev = NULL; 178 LIST_REMOVE(sc, mii_list); 179 180 return(0); 181 } 182 int 183 xmphy_service(sc, mii, cmd) 184 struct mii_softc *sc; 185 struct mii_data *mii; 186 int cmd; 187 { 188 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 189 int reg; 190 191 switch (cmd) { 192 case MII_POLLSTAT: 193 /* 194 * If we're not polling our PHY instance, just return. 195 */ 196 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 197 return (0); 198 break; 199 200 case MII_MEDIACHG: 201 /* 202 * If the media indicates a different PHY instance, 203 * isolate ourselves. 204 */ 205 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 206 reg = PHY_READ(sc, MII_BMCR); 207 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 208 return (0); 209 } 210 211 /* 212 * If the interface is not up, don't do anything. 213 */ 214 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 215 break; 216 217 switch (IFM_SUBTYPE(ife->ifm_media)) { 218 case IFM_AUTO: 219 #ifdef foo 220 /* 221 * If we're already in auto mode, just return. 222 */ 223 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 224 return (0); 225 #endif 226 (void) xmphy_mii_phy_auto(sc, 1); 227 break; 228 case IFM_1000_SX: 229 mii_phy_reset(sc); 230 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 231 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 232 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 233 } else { 234 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 235 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 236 } 237 break; 238 case IFM_100_T4: 239 case IFM_100_TX: 240 case IFM_10_T: 241 default: 242 return (EINVAL); 243 } 244 break; 245 246 case MII_TICK: 247 /* 248 * If we're not currently selected, just return. 249 */ 250 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 251 return (0); 252 253 /* 254 * Only used for autonegotiation. 255 */ 256 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 257 return (0); 258 259 /* 260 * Is the interface even up? 261 */ 262 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 263 return (0); 264 265 /* 266 * Only retry autonegotiation every 5 seconds. 267 */ 268 if (++sc->mii_ticks != 5) 269 return (0); 270 271 sc->mii_ticks = 0; 272 273 /* 274 * Check to see if we have link. If we do, we don't 275 * need to restart the autonegotiation process. Read 276 * the BMSR twice in case it's latched. 277 */ 278 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 279 PHY_READ(sc, XMPHY_MII_BMSR); 280 if (reg & XMPHY_BMSR_LINK) 281 break; 282 283 mii_phy_reset(sc); 284 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 285 return(0); 286 break; 287 } 288 289 /* Update the media status. */ 290 xmphy_status(sc); 291 292 /* Callback if something changed. */ 293 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 294 MIIBUS_STATCHG(sc->mii_dev); 295 sc->mii_active = mii->mii_media_active; 296 } 297 return (0); 298 } 299 300 void 301 xmphy_status(sc) 302 struct mii_softc *sc; 303 { 304 struct mii_data *mii = sc->mii_pdata; 305 int bmsr, bmcr, anlpar; 306 307 mii->mii_media_status = IFM_AVALID; 308 mii->mii_media_active = IFM_ETHER; 309 310 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 311 PHY_READ(sc, XMPHY_MII_BMSR); 312 if (bmsr & XMPHY_BMSR_LINK) 313 mii->mii_media_status |= IFM_ACTIVE; 314 315 /* Do dummy read of extended status register. */ 316 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 317 318 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 319 320 if (bmcr & XMPHY_BMCR_LOOP) 321 mii->mii_media_active |= IFM_LOOP; 322 323 324 if (bmcr & XMPHY_BMCR_AUTOEN) { 325 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 326 if (bmsr & XMPHY_BMSR_LINK) { 327 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 328 return; 329 } 330 /* Erg, still trying, I guess... */ 331 mii->mii_media_active |= IFM_NONE; 332 return; 333 } 334 335 mii->mii_media_active |= IFM_1000_SX; 336 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 337 PHY_READ(sc, XMPHY_MII_ANLPAR); 338 if (anlpar & XMPHY_ANLPAR_FDX) 339 mii->mii_media_active |= IFM_FDX; 340 else 341 mii->mii_media_active |= IFM_HDX; 342 return; 343 } 344 345 mii->mii_media_active |= IFM_1000_SX; 346 if (bmcr & XMPHY_BMCR_FDX) 347 mii->mii_media_active |= IFM_FDX; 348 else 349 mii->mii_media_active |= IFM_HDX; 350 351 return; 352 } 353 354 355 static int 356 xmphy_mii_phy_auto(mii, waitfor) 357 struct mii_softc *mii; 358 int waitfor; 359 { 360 int bmsr, anar = 0, i; 361 362 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 363 anar = PHY_READ(mii, XMPHY_MII_ANAR); 364 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 365 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 366 DELAY(1000); 367 PHY_WRITE(mii, XMPHY_MII_BMCR, 368 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 369 } 370 371 if (waitfor) { 372 /* Wait 500ms for it to complete. */ 373 for (i = 0; i < 500; i++) { 374 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & 375 XMPHY_BMSR_ACOMP) 376 return (0); 377 DELAY(1000); 378 #if 0 379 if ((bmsr & BMSR_ACOMP) == 0) 380 printf("%s: autonegotiation failed to complete\n", 381 mii->mii_dev.dv_xname); 382 #endif 383 } 384 385 /* 386 * Don't need to worry about clearing MIIF_DOINGAUTO. 387 * If that's set, a timeout is pending, and it will 388 * clear the flag. 389 */ 390 return (EIO); 391 } 392 393 /* 394 * Just let it finish asynchronously. This is for the benefit of 395 * the tick handler driving autonegotiation. Don't want 500ms 396 * delays all the time while the system is running! 397 */ 398 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 399 mii->mii_flags |= MIIF_DOINGAUTO; 400 mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1); 401 } 402 return (EJUSTRETURN); 403 } 404