1 /* 2 * Copyright (c) 1997, 1998, 1999 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 * Pseudo-driver for internal NWAY support on DEC 21143 and workalike 37 * controllers. Technically we're abusing the miibus code to handle 38 * media selection and NWAY support here since there is no MII 39 * interface. However the logical operations are roughly the same, 40 * and the alternative is to create a fake MII interface in the driver, 41 * which is harder to do. 42 */ 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/socket.h> 48 #include <sys/errno.h> 49 #include <sys/module.h> 50 #include <sys/mutex.h> 51 #include <sys/bus.h> 52 53 #include <net/if.h> 54 #include <net/if_arp.h> 55 #include <net/if_media.h> 56 57 #include <dev/mii/mii.h> 58 #include <dev/mii/miivar.h> 59 #include <dev/mii/miidevs.h> 60 61 #include <machine/bus_pio.h> 62 #include <machine/bus_memio.h> 63 #include <machine/bus.h> 64 #include <machine/resource.h> 65 #include <sys/bus.h> 66 67 #include <pci/pcivar.h> 68 69 #include <pci/if_dcreg.h> 70 71 #include "miibus_if.h" 72 73 #if !defined(lint) 74 static const char rcsid[] = 75 "$FreeBSD$"; 76 #endif 77 78 #define DC_SETBIT(sc, reg, x) \ 79 CSR_WRITE_4(sc, reg, \ 80 CSR_READ_4(sc, reg) | x) 81 82 #define DC_CLRBIT(sc, reg, x) \ 83 CSR_WRITE_4(sc, reg, \ 84 CSR_READ_4(sc, reg) & ~x) 85 86 #define MIIF_AUTOTIMEOUT 0x0004 87 88 /* 89 * This is the subsystem ID for the built-in 21143 ethernet 90 * in several Compaq Presario systems. Apparently these are 91 * 10Mbps only, so we need to treat them specially. 92 */ 93 #define COMPAQ_PRESARIO_ID 0xb0bb0e11 94 95 static int dcphy_probe __P((device_t)); 96 static int dcphy_attach __P((device_t)); 97 static int dcphy_detach __P((device_t)); 98 99 static device_method_t dcphy_methods[] = { 100 /* device interface */ 101 DEVMETHOD(device_probe, dcphy_probe), 102 DEVMETHOD(device_attach, dcphy_attach), 103 DEVMETHOD(device_detach, dcphy_detach), 104 DEVMETHOD(device_shutdown, bus_generic_shutdown), 105 { 0, 0 } 106 }; 107 108 static devclass_t dcphy_devclass; 109 110 static driver_t dcphy_driver = { 111 "dcphy", 112 dcphy_methods, 113 sizeof(struct mii_softc) 114 }; 115 116 DRIVER_MODULE(dcphy, miibus, dcphy_driver, dcphy_devclass, 0, 0); 117 118 int dcphy_service __P((struct mii_softc *, struct mii_data *, int)); 119 void dcphy_status __P((struct mii_softc *)); 120 static int dcphy_auto __P((struct mii_softc *, int)); 121 static void dcphy_reset __P((struct mii_softc *)); 122 123 static int dcphy_probe(dev) 124 device_t dev; 125 { 126 struct mii_attach_args *ma; 127 128 ma = device_get_ivars(dev); 129 130 /* 131 * The dc driver will report the 21143 vendor and device 132 * ID to let us know that it wants us to attach. 133 */ 134 if (ma->mii_id1 != DC_VENDORID_DEC || 135 ma->mii_id2 != DC_DEVICEID_21143) 136 return(ENXIO); 137 138 device_set_desc(dev, "Intel 21143 NWAY media interface"); 139 140 return (0); 141 } 142 143 static int dcphy_attach(dev) 144 device_t dev; 145 { 146 struct mii_softc *sc; 147 struct mii_attach_args *ma; 148 struct mii_data *mii; 149 struct dc_softc *dc_sc; 150 151 sc = device_get_softc(dev); 152 ma = device_get_ivars(dev); 153 sc->mii_dev = device_get_parent(dev); 154 mii = device_get_softc(sc->mii_dev); 155 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 156 157 sc->mii_inst = mii->mii_instance; 158 sc->mii_phy = ma->mii_phyno; 159 sc->mii_service = dcphy_service; 160 sc->mii_pdata = mii; 161 162 sc->mii_flags |= MIIF_NOISOLATE; 163 mii->mii_instance++; 164 165 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 166 167 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 168 BMCR_ISO); 169 170 /*dcphy_reset(sc);*/ 171 dc_sc = mii->mii_ifp->if_softc; 172 CSR_WRITE_4(dc_sc, DC_10BTSTAT, 0); 173 CSR_WRITE_4(dc_sc, DC_10BTCTRL, 0); 174 175 switch(pci_read_config(device_get_parent(sc->mii_dev), 176 DC_PCI_CSID, 4)) { 177 case COMPAQ_PRESARIO_ID: 178 /* Example of how to only allow 10Mbps modes. */ 179 sc->mii_capabilities = BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX; 180 break; 181 default: 182 if (dc_sc->dc_pmode == DC_PMODE_SIA) { 183 sc->mii_capabilities = 184 BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX; 185 } else { 186 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, 187 sc->mii_inst), BMCR_LOOP|BMCR_S100); 188 189 sc->mii_capabilities = 190 BMSR_ANEG|BMSR_100TXFDX|BMSR_100TXHDX| 191 BMSR_10TFDX|BMSR_10THDX; 192 } 193 break; 194 } 195 196 sc->mii_capabilities &= ma->mii_capmask; 197 device_printf(dev, " "); 198 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 199 printf("no media present"); 200 else 201 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); 202 printf("\n"); 203 #undef ADD 204 205 MIIBUS_MEDIAINIT(sc->mii_dev); 206 return(0); 207 } 208 209 static int dcphy_detach(dev) 210 device_t dev; 211 { 212 struct mii_softc *sc; 213 struct mii_data *mii; 214 215 sc = device_get_softc(dev); 216 mii = device_get_softc(device_get_parent(dev)); 217 sc->mii_dev = NULL; 218 LIST_REMOVE(sc, mii_list); 219 220 return(0); 221 } 222 223 int 224 dcphy_service(sc, mii, cmd) 225 struct mii_softc *sc; 226 struct mii_data *mii; 227 int cmd; 228 { 229 struct dc_softc *dc_sc; 230 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 231 int reg; 232 u_int32_t mode; 233 234 dc_sc = mii->mii_ifp->if_softc; 235 236 switch (cmd) { 237 case MII_POLLSTAT: 238 /* 239 * If we're not polling our PHY instance, just return. 240 */ 241 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 242 return (0); 243 } 244 break; 245 246 case MII_MEDIACHG: 247 /* 248 * If the media indicates a different PHY instance, 249 * isolate ourselves. 250 */ 251 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 252 return (0); 253 } 254 255 /* 256 * If the interface is not up, don't do anything. 257 */ 258 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 259 break; 260 261 sc->mii_flags = 0; 262 mii->mii_media_active = IFM_NONE; 263 mode = CSR_READ_4(dc_sc, DC_NETCFG); 264 mode &= ~(DC_NETCFG_FULLDUPLEX|DC_NETCFG_PORTSEL| 265 DC_NETCFG_PCS|DC_NETCFG_SCRAMBLER|DC_NETCFG_SPEEDSEL); 266 267 switch (IFM_SUBTYPE(ife->ifm_media)) { 268 case IFM_AUTO: 269 /*dcphy_reset(sc);*/ 270 sc->mii_flags &= ~MIIF_DOINGAUTO; 271 (void) dcphy_auto(sc, 0); 272 break; 273 case IFM_100_T4: 274 /* 275 * XXX Not supported as a manual setting right now. 276 */ 277 return (EINVAL); 278 case IFM_100_TX: 279 dcphy_reset(sc); 280 DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 281 mode |= DC_NETCFG_PORTSEL|DC_NETCFG_PCS| 282 DC_NETCFG_SCRAMBLER; 283 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 284 mode |= DC_NETCFG_FULLDUPLEX; 285 else 286 mode &= ~DC_NETCFG_FULLDUPLEX; 287 CSR_WRITE_4(dc_sc, DC_NETCFG, mode); 288 break; 289 case IFM_10_T: 290 DC_CLRBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); 291 DC_CLRBIT(dc_sc, DC_10BTCTRL, 0xFFFF); 292 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 293 DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3D); 294 else 295 DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3F); 296 DC_SETBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); 297 DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 298 mode &= ~DC_NETCFG_PORTSEL; 299 mode |= DC_NETCFG_SPEEDSEL; 300 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 301 mode |= DC_NETCFG_FULLDUPLEX; 302 else 303 mode &= ~DC_NETCFG_FULLDUPLEX; 304 CSR_WRITE_4(dc_sc, DC_NETCFG, mode); 305 break; 306 default: 307 return(EINVAL); 308 break; 309 } 310 break; 311 312 case MII_TICK: 313 /* 314 * If we're not currently selected, just return. 315 */ 316 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 317 return (0); 318 319 /* 320 * Only used for autonegotiation. 321 */ 322 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 323 return (0); 324 325 /* 326 * Is the interface even up? 327 */ 328 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 329 return (0); 330 331 reg = CSR_READ_4(dc_sc, DC_10BTSTAT) & 332 (DC_TSTAT_LS10|DC_TSTAT_LS100); 333 334 if (!(reg & DC_TSTAT_LS10) || !(reg & DC_TSTAT_LS100)) 335 return(0); 336 337 /* 338 * Only retry autonegotiation every 5 seconds. 339 */ 340 if (++sc->mii_ticks != 50) 341 return (0); 342 343 sc->mii_ticks = 0; 344 /*if (DC_IS_INTEL(dc_sc))*/ 345 sc->mii_flags &= ~MIIF_DOINGAUTO; 346 dcphy_auto(sc, 0); 347 348 break; 349 } 350 351 /* Update the media status. */ 352 dcphy_status(sc); 353 354 /* Callback if something changed. */ 355 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 356 MIIBUS_STATCHG(sc->mii_dev); 357 sc->mii_active = mii->mii_media_active; 358 } 359 return (0); 360 } 361 362 void 363 dcphy_status(sc) 364 struct mii_softc *sc; 365 { 366 struct mii_data *mii = sc->mii_pdata; 367 int reg, anlpar, tstat = 0; 368 struct dc_softc *dc_sc; 369 370 dc_sc = mii->mii_ifp->if_softc; 371 372 mii->mii_media_status = IFM_AVALID; 373 mii->mii_media_active = IFM_ETHER; 374 375 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 376 return; 377 378 reg = CSR_READ_4(dc_sc, DC_10BTSTAT) & 379 (DC_TSTAT_LS10|DC_TSTAT_LS100); 380 381 if (!(reg & DC_TSTAT_LS10) || !(reg & DC_TSTAT_LS100)) 382 mii->mii_media_status |= IFM_ACTIVE; 383 384 if (CSR_READ_4(dc_sc, DC_10BTCTRL) & DC_TCTL_AUTONEGENBL) { 385 /* Erg, still trying, I guess... */ 386 tstat = CSR_READ_4(dc_sc, DC_10BTSTAT); 387 if ((tstat & DC_TSTAT_ANEGSTAT) != DC_ASTAT_AUTONEGCMP) { 388 if ((DC_IS_MACRONIX(dc_sc) || DC_IS_PNICII(dc_sc)) && 389 (tstat & DC_TSTAT_ANEGSTAT) == DC_ASTAT_DISABLE) 390 goto skip; 391 mii->mii_media_active |= IFM_NONE; 392 return; 393 } 394 395 if (tstat & DC_TSTAT_LP_CAN_NWAY) { 396 anlpar = tstat >> 16; 397 if (anlpar & ANLPAR_T4 && 398 sc->mii_capabilities & BMSR_100TXHDX) 399 mii->mii_media_active |= IFM_100_T4; 400 else if (anlpar & ANLPAR_TX_FD && 401 sc->mii_capabilities & BMSR_100TXFDX) 402 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 403 else if (anlpar & ANLPAR_TX && 404 sc->mii_capabilities & BMSR_100TXHDX) 405 mii->mii_media_active |= IFM_100_TX; 406 else if (anlpar & ANLPAR_10_FD) 407 mii->mii_media_active |= IFM_10_T|IFM_FDX; 408 else if (anlpar & ANLPAR_10) 409 mii->mii_media_active |= IFM_10_T; 410 else 411 mii->mii_media_active |= IFM_NONE; 412 if (DC_IS_INTEL(dc_sc)) 413 DC_CLRBIT(dc_sc, DC_10BTCTRL, 414 DC_TCTL_AUTONEGENBL); 415 return; 416 } 417 /* 418 * If the other side doesn't support NWAY, then the 419 * best we can do is determine if we have a 10Mbps or 420 * 100Mbps link. There's no way to know if the link 421 * is full or half duplex, so we default to half duplex 422 * and hope that the user is clever enough to manually 423 * change the media settings if we're wrong. 424 */ 425 if (!(reg & DC_TSTAT_LS100)) 426 mii->mii_media_active |= IFM_100_TX; 427 else if (!(reg & DC_TSTAT_LS10)) 428 mii->mii_media_active |= IFM_10_T; 429 else 430 mii->mii_media_active |= IFM_NONE; 431 if (DC_IS_INTEL(dc_sc)) 432 DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 433 return; 434 } 435 436 skip: 437 438 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 439 mii->mii_media_active |= IFM_10_T; 440 else 441 mii->mii_media_active |= IFM_100_TX; 442 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 443 mii->mii_media_active |= IFM_FDX; 444 445 return; 446 } 447 448 static int 449 dcphy_auto(mii, waitfor) 450 struct mii_softc *mii; 451 int waitfor; 452 { 453 int i; 454 struct dc_softc *sc; 455 456 sc = mii->mii_pdata->mii_ifp->if_softc; 457 458 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 459 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 460 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 461 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 462 if (mii->mii_capabilities & BMSR_100TXHDX) 463 CSR_WRITE_4(sc, DC_10BTCTRL, 0x3FFFF); 464 else 465 CSR_WRITE_4(sc, DC_10BTCTRL, 0xFFFF); 466 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 467 DC_SETBIT(sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 468 DC_SETBIT(sc, DC_10BTSTAT, DC_ASTAT_TXDISABLE); 469 } 470 471 if (waitfor) { 472 /* Wait 500ms for it to complete. */ 473 for (i = 0; i < 500; i++) { 474 if ((CSR_READ_4(sc, DC_10BTSTAT) & DC_TSTAT_ANEGSTAT) 475 == DC_ASTAT_AUTONEGCMP) 476 return(0); 477 DELAY(1000); 478 } 479 /* 480 * Don't need to worry about clearing MIIF_DOINGAUTO. 481 * If that's set, a timeout is pending, and it will 482 * clear the flag. 483 */ 484 return(EIO); 485 } 486 487 /* 488 * Just let it finish asynchronously. This is for the benefit of 489 * the tick handler driving autonegotiation. Don't want 500ms 490 * delays all the time while the system is running! 491 */ 492 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) 493 mii->mii_flags |= MIIF_DOINGAUTO; 494 495 return(EJUSTRETURN); 496 } 497 498 static void 499 dcphy_reset(mii) 500 struct mii_softc *mii; 501 { 502 struct dc_softc *sc; 503 504 sc = mii->mii_pdata->mii_ifp->if_softc; 505 506 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 507 DELAY(1000); 508 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 509 510 return; 511 } 512 513