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 1.7 2005/10/24 16:55:40 dillon Exp $ 34 */ 35 36 /* 37 * driver for the XaQti XMAC II's internal PHY. This is sort of 38 * like a 10/100 PHY, except the only thing we're really autoselecting 39 * here is full/half duplex. Speed is always 1000mbps. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/bus.h> 47 48 #include <machine/clock.h> 49 50 #include <net/if.h> 51 #include <net/if_media.h> 52 53 #include "mii.h" 54 #include "miivar.h" 55 #include "miidevs.h" 56 57 #include "xmphyreg.h" 58 59 #include "miibus_if.h" 60 61 static int xmphy_probe (device_t); 62 static int xmphy_attach (device_t); 63 static int xmphy_detach (device_t); 64 65 static device_method_t xmphy_methods[] = { 66 /* device interface */ 67 DEVMETHOD(device_probe, xmphy_probe), 68 DEVMETHOD(device_attach, xmphy_attach), 69 DEVMETHOD(device_detach, xmphy_detach), 70 DEVMETHOD(device_shutdown, bus_generic_shutdown), 71 { 0, 0 } 72 }; 73 74 static devclass_t xmphy_devclass; 75 76 static driver_t xmphy_driver = { 77 "xmphy", 78 xmphy_methods, 79 sizeof(struct mii_softc) 80 }; 81 82 DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0); 83 84 int xmphy_service (struct mii_softc *, struct mii_data *, int); 85 void xmphy_status (struct mii_softc *); 86 87 static int xmphy_mii_phy_auto (struct mii_softc *, int); 88 extern void mii_phy_auto_timeout (void *); 89 90 static int xmphy_probe(dev) 91 device_t dev; 92 { 93 struct mii_attach_args *ma; 94 95 ma = device_get_ivars(dev); 96 97 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI && 98 MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) { 99 device_set_desc(dev, MII_STR_XAQTI_XMACII); 100 return(0); 101 } 102 103 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO && 104 MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) { 105 device_set_desc(dev, MII_STR_JATO_BASEX); 106 return(0); 107 } 108 109 return(ENXIO); 110 } 111 112 static int xmphy_attach(dev) 113 device_t dev; 114 { 115 struct mii_softc *sc; 116 struct mii_attach_args *ma; 117 struct mii_data *mii; 118 const char *sep = ""; 119 120 sc = device_get_softc(dev); 121 ma = device_get_ivars(dev); 122 mii_softc_init(sc, ma); 123 sc->mii_dev = device_get_parent(dev); 124 mii = device_get_softc(sc->mii_dev); 125 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 126 127 sc->mii_inst = mii->mii_instance; 128 sc->mii_service = xmphy_service; 129 sc->mii_pdata = mii; 130 131 sc->mii_flags |= MIIF_NOISOLATE; 132 mii->mii_instance++; 133 134 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 135 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 136 137 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 138 BMCR_ISO); 139 #if 0 140 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 141 BMCR_LOOP|BMCR_S100); 142 #endif 143 144 mii_phy_reset(sc); 145 146 device_printf(dev, " "); 147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 148 XMPHY_BMCR_FDX); 149 PRINT("1000baseSX"); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 151 PRINT("1000baseSX-FDX"); 152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 153 PRINT("auto"); 154 155 printf("\n"); 156 #undef ADD 157 #undef PRINT 158 159 MIIBUS_MEDIAINIT(sc->mii_dev); 160 return(0); 161 } 162 163 static int xmphy_detach(dev) 164 device_t dev; 165 { 166 struct mii_softc *sc; 167 struct mii_data *mii; 168 169 sc = device_get_softc(dev); 170 mii = device_get_softc(device_get_parent(dev)); 171 if (sc->mii_flags & MIIF_DOINGAUTO) 172 callout_stop(&sc->mii_auto_ch); 173 sc->mii_dev = NULL; 174 LIST_REMOVE(sc, mii_list); 175 176 return(0); 177 } 178 int 179 xmphy_service(sc, mii, cmd) 180 struct mii_softc *sc; 181 struct mii_data *mii; 182 int cmd; 183 { 184 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 185 int reg; 186 187 switch (cmd) { 188 case MII_POLLSTAT: 189 /* 190 * If we're not polling our PHY instance, just return. 191 */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 193 return (0); 194 break; 195 196 case MII_MEDIACHG: 197 /* 198 * If the media indicates a different PHY instance, 199 * isolate ourselves. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 202 reg = PHY_READ(sc, MII_BMCR); 203 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 204 return (0); 205 } 206 207 /* 208 * If the interface is not up, don't do anything. 209 */ 210 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 211 break; 212 213 switch (IFM_SUBTYPE(ife->ifm_media)) { 214 case IFM_AUTO: 215 #ifdef foo 216 /* 217 * If we're already in auto mode, just return. 218 */ 219 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 220 return (0); 221 #endif 222 (void) xmphy_mii_phy_auto(sc, 1); 223 break; 224 case IFM_1000_SX: 225 mii_phy_reset(sc); 226 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 227 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 228 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 229 } else { 230 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 231 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 232 } 233 break; 234 case IFM_100_T4: 235 case IFM_100_TX: 236 case IFM_10_T: 237 default: 238 return (EINVAL); 239 } 240 break; 241 242 case MII_TICK: 243 /* 244 * If we're not currently selected, just return. 245 */ 246 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 247 return (0); 248 249 /* 250 * Only used for autonegotiation. 251 */ 252 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 253 return (0); 254 255 /* 256 * Is the interface even up? 257 */ 258 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 259 return (0); 260 261 /* 262 * Only retry autonegotiation every 5 seconds. 263 */ 264 if (++sc->mii_ticks != 5) 265 return (0); 266 267 sc->mii_ticks = 0; 268 269 /* 270 * Check to see if we have link. If we do, we don't 271 * need to restart the autonegotiation process. Read 272 * the BMSR twice in case it's latched. 273 */ 274 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 275 PHY_READ(sc, XMPHY_MII_BMSR); 276 if (reg & XMPHY_BMSR_LINK) 277 break; 278 279 mii_phy_reset(sc); 280 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 281 return(0); 282 break; 283 } 284 285 /* Update the media status. */ 286 xmphy_status(sc); 287 288 /* Callback if something changed. */ 289 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 290 MIIBUS_STATCHG(sc->mii_dev); 291 sc->mii_active = mii->mii_media_active; 292 } 293 return (0); 294 } 295 296 void 297 xmphy_status(sc) 298 struct mii_softc *sc; 299 { 300 struct mii_data *mii = sc->mii_pdata; 301 int bmsr, bmcr, anlpar; 302 303 mii->mii_media_status = IFM_AVALID; 304 mii->mii_media_active = IFM_ETHER; 305 306 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 307 PHY_READ(sc, XMPHY_MII_BMSR); 308 if (bmsr & XMPHY_BMSR_LINK) 309 mii->mii_media_status |= IFM_ACTIVE; 310 311 /* Do dummy read of extended status register. */ 312 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 313 314 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 315 316 if (bmcr & XMPHY_BMCR_LOOP) 317 mii->mii_media_active |= IFM_LOOP; 318 319 320 if (bmcr & XMPHY_BMCR_AUTOEN) { 321 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 322 if (bmsr & XMPHY_BMSR_LINK) { 323 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 324 return; 325 } 326 /* Erg, still trying, I guess... */ 327 mii->mii_media_active |= IFM_NONE; 328 return; 329 } 330 331 mii->mii_media_active |= IFM_1000_SX; 332 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 333 PHY_READ(sc, XMPHY_MII_ANLPAR); 334 if (anlpar & XMPHY_ANLPAR_FDX) 335 mii->mii_media_active |= IFM_FDX; 336 else 337 mii->mii_media_active |= IFM_HDX; 338 return; 339 } 340 341 mii->mii_media_active |= IFM_1000_SX; 342 if (bmcr & XMPHY_BMCR_FDX) 343 mii->mii_media_active |= IFM_FDX; 344 else 345 mii->mii_media_active |= IFM_HDX; 346 347 return; 348 } 349 350 351 static int 352 xmphy_mii_phy_auto(mii, waitfor) 353 struct mii_softc *mii; 354 int waitfor; 355 { 356 int bmsr, anar = 0, i; 357 358 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 359 anar = PHY_READ(mii, XMPHY_MII_ANAR); 360 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 361 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 362 DELAY(1000); 363 PHY_WRITE(mii, XMPHY_MII_BMCR, 364 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 365 } 366 367 if (waitfor) { 368 /* Wait 500ms for it to complete. */ 369 for (i = 0; i < 500; i++) { 370 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & 371 XMPHY_BMSR_ACOMP) 372 return (0); 373 DELAY(1000); 374 #if 0 375 if ((bmsr & BMSR_ACOMP) == 0) 376 printf("%s: autonegotiation failed to complete\n", 377 mii->mii_dev.dv_xname); 378 #endif 379 } 380 381 /* 382 * Don't need to worry about clearing MIIF_DOINGAUTO. 383 * If that's set, a timeout is pending, and it will 384 * clear the flag. 385 */ 386 return (EIO); 387 } 388 389 /* 390 * Just let it finish asynchronously. This is for the benefit of 391 * the tick handler driving autonegotiation. Don't want 500ms 392 * delays all the time while the system is running! 393 */ 394 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 395 mii->mii_flags |= MIIF_DOINGAUTO; 396 callout_reset(&mii->mii_auto_ch, hz >> 1, 397 mii_phy_auto_timeout, mii); 398 } 399 return (EJUSTRETURN); 400 } 401