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 1.6 2005/02/21 18:40:36 joerg 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); 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_phy = ma->mii_phyno; 129 sc->mii_service = xmphy_service; 130 sc->mii_pdata = mii; 131 132 sc->mii_flags |= MIIF_NOISOLATE; 133 mii->mii_instance++; 134 135 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 136 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 137 138 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 139 BMCR_ISO); 140 #if 0 141 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 142 BMCR_LOOP|BMCR_S100); 143 #endif 144 145 mii_phy_reset(sc); 146 147 device_printf(dev, " "); 148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 149 XMPHY_BMCR_FDX); 150 PRINT("1000baseSX"); 151 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 152 PRINT("1000baseSX-FDX"); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 154 PRINT("auto"); 155 156 printf("\n"); 157 #undef ADD 158 #undef PRINT 159 160 MIIBUS_MEDIAINIT(sc->mii_dev); 161 return(0); 162 } 163 164 static int xmphy_detach(dev) 165 device_t dev; 166 { 167 struct mii_softc *sc; 168 struct mii_data *mii; 169 170 sc = device_get_softc(dev); 171 mii = device_get_softc(device_get_parent(dev)); 172 if (sc->mii_flags & MIIF_DOINGAUTO) 173 callout_stop(&sc->mii_auto_ch); 174 sc->mii_dev = NULL; 175 LIST_REMOVE(sc, mii_list); 176 177 return(0); 178 } 179 int 180 xmphy_service(sc, mii, cmd) 181 struct mii_softc *sc; 182 struct mii_data *mii; 183 int cmd; 184 { 185 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 186 int reg; 187 188 switch (cmd) { 189 case MII_POLLSTAT: 190 /* 191 * If we're not polling our PHY instance, just return. 192 */ 193 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 194 return (0); 195 break; 196 197 case MII_MEDIACHG: 198 /* 199 * If the media indicates a different PHY instance, 200 * isolate ourselves. 201 */ 202 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 203 reg = PHY_READ(sc, MII_BMCR); 204 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 205 return (0); 206 } 207 208 /* 209 * If the interface is not up, don't do anything. 210 */ 211 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 212 break; 213 214 switch (IFM_SUBTYPE(ife->ifm_media)) { 215 case IFM_AUTO: 216 #ifdef foo 217 /* 218 * If we're already in auto mode, just return. 219 */ 220 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 221 return (0); 222 #endif 223 (void) xmphy_mii_phy_auto(sc, 1); 224 break; 225 case IFM_1000_SX: 226 mii_phy_reset(sc); 227 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 228 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 229 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 230 } else { 231 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 232 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 233 } 234 break; 235 case IFM_100_T4: 236 case IFM_100_TX: 237 case IFM_10_T: 238 default: 239 return (EINVAL); 240 } 241 break; 242 243 case MII_TICK: 244 /* 245 * If we're not currently selected, just return. 246 */ 247 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 248 return (0); 249 250 /* 251 * Only used for autonegotiation. 252 */ 253 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 254 return (0); 255 256 /* 257 * Is the interface even up? 258 */ 259 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 260 return (0); 261 262 /* 263 * Only retry autonegotiation every 5 seconds. 264 */ 265 if (++sc->mii_ticks != 5) 266 return (0); 267 268 sc->mii_ticks = 0; 269 270 /* 271 * Check to see if we have link. If we do, we don't 272 * need to restart the autonegotiation process. Read 273 * the BMSR twice in case it's latched. 274 */ 275 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 276 PHY_READ(sc, XMPHY_MII_BMSR); 277 if (reg & XMPHY_BMSR_LINK) 278 break; 279 280 mii_phy_reset(sc); 281 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 282 return(0); 283 break; 284 } 285 286 /* Update the media status. */ 287 xmphy_status(sc); 288 289 /* Callback if something changed. */ 290 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 291 MIIBUS_STATCHG(sc->mii_dev); 292 sc->mii_active = mii->mii_media_active; 293 } 294 return (0); 295 } 296 297 void 298 xmphy_status(sc) 299 struct mii_softc *sc; 300 { 301 struct mii_data *mii = sc->mii_pdata; 302 int bmsr, bmcr, anlpar; 303 304 mii->mii_media_status = IFM_AVALID; 305 mii->mii_media_active = IFM_ETHER; 306 307 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 308 PHY_READ(sc, XMPHY_MII_BMSR); 309 if (bmsr & XMPHY_BMSR_LINK) 310 mii->mii_media_status |= IFM_ACTIVE; 311 312 /* Do dummy read of extended status register. */ 313 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 314 315 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 316 317 if (bmcr & XMPHY_BMCR_LOOP) 318 mii->mii_media_active |= IFM_LOOP; 319 320 321 if (bmcr & XMPHY_BMCR_AUTOEN) { 322 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 323 if (bmsr & XMPHY_BMSR_LINK) { 324 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 325 return; 326 } 327 /* Erg, still trying, I guess... */ 328 mii->mii_media_active |= IFM_NONE; 329 return; 330 } 331 332 mii->mii_media_active |= IFM_1000_SX; 333 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 334 PHY_READ(sc, XMPHY_MII_ANLPAR); 335 if (anlpar & XMPHY_ANLPAR_FDX) 336 mii->mii_media_active |= IFM_FDX; 337 else 338 mii->mii_media_active |= IFM_HDX; 339 return; 340 } 341 342 mii->mii_media_active |= IFM_1000_SX; 343 if (bmcr & XMPHY_BMCR_FDX) 344 mii->mii_media_active |= IFM_FDX; 345 else 346 mii->mii_media_active |= IFM_HDX; 347 348 return; 349 } 350 351 352 static int 353 xmphy_mii_phy_auto(mii, waitfor) 354 struct mii_softc *mii; 355 int waitfor; 356 { 357 int bmsr, anar = 0, i; 358 359 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 360 anar = PHY_READ(mii, XMPHY_MII_ANAR); 361 anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX; 362 PHY_WRITE(mii, XMPHY_MII_ANAR, anar); 363 DELAY(1000); 364 PHY_WRITE(mii, XMPHY_MII_BMCR, 365 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 366 } 367 368 if (waitfor) { 369 /* Wait 500ms for it to complete. */ 370 for (i = 0; i < 500; i++) { 371 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & 372 XMPHY_BMSR_ACOMP) 373 return (0); 374 DELAY(1000); 375 #if 0 376 if ((bmsr & BMSR_ACOMP) == 0) 377 printf("%s: autonegotiation failed to complete\n", 378 mii->mii_dev.dv_xname); 379 #endif 380 } 381 382 /* 383 * Don't need to worry about clearing MIIF_DOINGAUTO. 384 * If that's set, a timeout is pending, and it will 385 * clear the flag. 386 */ 387 return (EIO); 388 } 389 390 /* 391 * Just let it finish asynchronously. This is for the benefit of 392 * the tick handler driving autonegotiation. Don't want 500ms 393 * delays all the time while the system is running! 394 */ 395 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 396 mii->mii_flags |= MIIF_DOINGAUTO; 397 callout_reset(&mii->mii_auto_ch, hz >> 1, 398 mii_phy_auto_timeout, mii); 399 } 400 return (EJUSTRETURN); 401 } 402