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