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 * $FreeBSD$ 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/malloc.h> 45 #include <sys/socket.h> 46 #include <sys/bus.h> 47 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 "$FreeBSD$"; 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 return(ENXIO); 104 105 device_set_desc(dev, MII_STR_XAQTI_XMACII); 106 107 return(0); 108 } 109 110 static int xmphy_attach(dev) 111 device_t dev; 112 { 113 struct mii_softc *sc; 114 struct mii_attach_args *ma; 115 struct mii_data *mii; 116 const char *sep = ""; 117 118 sc = device_get_softc(dev); 119 ma = device_get_ivars(dev); 120 sc->mii_dev = device_get_parent(dev); 121 mii = device_get_softc(sc->mii_dev); 122 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 123 124 sc->mii_inst = mii->mii_instance; 125 sc->mii_phy = ma->mii_phyno; 126 sc->mii_service = xmphy_service; 127 sc->mii_pdata = mii; 128 129 sc->mii_flags |= MIIF_NOISOLATE; 130 mii->mii_instance++; 131 132 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 133 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 134 135 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 136 BMCR_ISO); 137 #if 0 138 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 139 BMCR_LOOP|BMCR_S100); 140 #endif 141 142 mii_phy_reset(sc); 143 144 device_printf(dev, " "); 145 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst), 146 XMPHY_BMCR_FDX); 147 PRINT("1000baseSX"); 148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0); 149 PRINT("1000baseSX-FDX"); 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0); 151 PRINT("auto"); 152 153 printf("\n"); 154 #undef ADD 155 #undef PRINT 156 157 MIIBUS_MEDIAINIT(sc->mii_dev); 158 return(0); 159 } 160 161 static int xmphy_detach(dev) 162 device_t dev; 163 { 164 struct mii_softc *sc; 165 struct mii_data *mii; 166 167 sc = device_get_softc(dev); 168 mii = device_get_softc(device_get_parent(dev)); 169 if (sc->mii_flags & MIIF_DOINGAUTO) 170 untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch); 171 sc->mii_dev = NULL; 172 LIST_REMOVE(sc, mii_list); 173 174 return(0); 175 } 176 int 177 xmphy_service(sc, mii, cmd) 178 struct mii_softc *sc; 179 struct mii_data *mii; 180 int cmd; 181 { 182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 183 int reg; 184 185 switch (cmd) { 186 case MII_POLLSTAT: 187 /* 188 * If we're not polling our PHY instance, just return. 189 */ 190 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 191 return (0); 192 break; 193 194 case MII_MEDIACHG: 195 /* 196 * If the media indicates a different PHY instance, 197 * isolate ourselves. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 200 reg = PHY_READ(sc, MII_BMCR); 201 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 202 return (0); 203 } 204 205 /* 206 * If the interface is not up, don't do anything. 207 */ 208 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 209 break; 210 211 switch (IFM_SUBTYPE(ife->ifm_media)) { 212 case IFM_AUTO: 213 /* 214 * If we're already in auto mode, just return. 215 */ 216 if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN) 217 return (0); 218 (void) xmphy_mii_phy_auto(sc, 1); 219 break; 220 case IFM_1000_SX: 221 mii_phy_reset(sc); 222 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 223 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX); 224 PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX); 225 } else { 226 PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX); 227 PHY_WRITE(sc, XMPHY_MII_BMCR, 0); 228 } 229 break; 230 case IFM_100_T4: 231 case IFM_100_TX: 232 case IFM_10_T: 233 default: 234 return (EINVAL); 235 } 236 break; 237 238 case MII_TICK: 239 /* 240 * If we're not currently selected, just return. 241 */ 242 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 243 return (0); 244 245 /* 246 * Only used for autonegotiation. 247 */ 248 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 249 return (0); 250 251 /* 252 * Is the interface even up? 253 */ 254 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 255 return (0); 256 257 /* 258 * Only retry autonegotiation every 5 seconds. 259 */ 260 if (++sc->mii_ticks != 5) 261 return (0); 262 263 sc->mii_ticks = 0; 264 265 /* 266 * Check to see if we have link. If we do, we don't 267 * need to restart the autonegotiation process. Read 268 * the BMSR twice in case it's latched. 269 */ 270 reg = PHY_READ(sc, XMPHY_MII_BMSR) | 271 PHY_READ(sc, XMPHY_MII_BMSR); 272 if (reg & XMPHY_BMSR_LINK) 273 break; 274 275 mii_phy_reset(sc); 276 if (xmphy_mii_phy_auto(sc, 0) == EJUSTRETURN) 277 return(0); 278 break; 279 } 280 281 /* Update the media status. */ 282 xmphy_status(sc); 283 284 /* Callback if something changed. */ 285 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 286 MIIBUS_STATCHG(sc->mii_dev); 287 sc->mii_active = mii->mii_media_active; 288 } 289 return (0); 290 } 291 292 void 293 xmphy_status(sc) 294 struct mii_softc *sc; 295 { 296 struct mii_data *mii = sc->mii_pdata; 297 int bmsr, bmcr, anlpar; 298 299 mii->mii_media_status = IFM_AVALID; 300 mii->mii_media_active = IFM_ETHER; 301 302 bmsr = PHY_READ(sc, XMPHY_MII_BMSR) | 303 PHY_READ(sc, XMPHY_MII_BMSR); 304 if (bmsr & XMPHY_BMSR_LINK) 305 mii->mii_media_status |= IFM_ACTIVE; 306 307 /* Do dummy read of extended status register. */ 308 bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS); 309 310 bmcr = PHY_READ(sc, XMPHY_MII_BMCR); 311 312 if (bmcr & XMPHY_BMCR_LOOP) 313 mii->mii_media_active |= IFM_LOOP; 314 315 316 if (bmcr & XMPHY_BMCR_AUTOEN) { 317 if ((bmsr & XMPHY_BMSR_ACOMP) == 0) { 318 if (bmsr & XMPHY_BMSR_LINK) { 319 mii->mii_media_active |= IFM_1000_SX|IFM_HDX; 320 return; 321 } 322 /* Erg, still trying, I guess... */ 323 mii->mii_media_active |= IFM_NONE; 324 return; 325 } 326 327 mii->mii_media_active |= IFM_1000_SX; 328 anlpar = PHY_READ(sc, XMPHY_MII_ANAR) & 329 PHY_READ(sc, XMPHY_MII_ANLPAR); 330 if (anlpar & XMPHY_ANLPAR_FDX) 331 mii->mii_media_active |= IFM_FDX; 332 else 333 mii->mii_media_active |= IFM_HDX; 334 return; 335 } 336 337 mii->mii_media_active |= IFM_1000_SX; 338 if (bmcr & XMPHY_BMCR_FDX) 339 mii->mii_media_active |= IFM_FDX; 340 else 341 mii->mii_media_active |= IFM_HDX; 342 343 return; 344 } 345 346 347 static int 348 xmphy_mii_phy_auto(mii, waitfor) 349 struct mii_softc *mii; 350 int waitfor; 351 { 352 int bmsr, i; 353 354 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 355 PHY_WRITE(mii, XMPHY_MII_ANAR, 356 XMPHY_ANAR_FDX|XMPHY_ANAR_HDX); 357 PHY_WRITE(mii, XMPHY_MII_BMCR, 358 XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG); 359 } 360 361 if (waitfor) { 362 /* Wait 500ms for it to complete. */ 363 for (i = 0; i < 500; i++) { 364 if ((bmsr = PHY_READ(mii, XMPHY_MII_BMSR)) & 365 XMPHY_BMSR_ACOMP) 366 return (0); 367 DELAY(1000); 368 #if 0 369 if ((bmsr & BMSR_ACOMP) == 0) 370 printf("%s: autonegotiation failed to complete\n", 371 mii->mii_dev.dv_xname); 372 #endif 373 } 374 375 /* 376 * Don't need to worry about clearing MIIF_DOINGAUTO. 377 * If that's set, a timeout is pending, and it will 378 * clear the flag. 379 */ 380 return (EIO); 381 } 382 383 /* 384 * Just let it finish asynchronously. This is for the benefit of 385 * the tick handler driving autonegotiation. Don't want 500ms 386 * delays all the time while the system is running! 387 */ 388 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 389 mii->mii_flags |= MIIF_DOINGAUTO; 390 mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1); 391 } 392 return (EJUSTRETURN); 393 } 394