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/lock.h> 50 #include <sys/module.h> 51 #include <sys/mutex.h> 52 #include <sys/bus.h> 53 54 #include <net/if.h> 55 #include <net/if_arp.h> 56 #include <net/if_media.h> 57 58 #include <dev/mii/mii.h> 59 #include <dev/mii/miivar.h> 60 #include <dev/mii/miidevs.h> 61 62 #include <machine/bus_pio.h> 63 #include <machine/bus_memio.h> 64 #include <machine/bus.h> 65 #include <machine/resource.h> 66 #include <sys/bus.h> 67 68 #include <pci/pcivar.h> 69 70 #include <pci/if_dcreg.h> 71 72 #include "miibus_if.h" 73 74 #if !defined(lint) 75 static const char rcsid[] = 76 "$FreeBSD$"; 77 #endif 78 79 #define DC_SETBIT(sc, reg, x) \ 80 CSR_WRITE_4(sc, reg, \ 81 CSR_READ_4(sc, reg) | x) 82 83 #define DC_CLRBIT(sc, reg, x) \ 84 CSR_WRITE_4(sc, reg, \ 85 CSR_READ_4(sc, reg) & ~x) 86 87 #define MIIF_AUTOTIMEOUT 0x0004 88 89 /* 90 * This is the subsystem ID for the built-in 21143 ethernet 91 * in several Compaq Presario systems. Apparently these are 92 * 10Mbps only, so we need to treat them specially. 93 */ 94 #define COMPAQ_PRESARIO_ID 0xb0bb0e11 95 96 static int dcphy_probe __P((device_t)); 97 static int dcphy_attach __P((device_t)); 98 static int dcphy_detach __P((device_t)); 99 100 static device_method_t dcphy_methods[] = { 101 /* device interface */ 102 DEVMETHOD(device_probe, dcphy_probe), 103 DEVMETHOD(device_attach, dcphy_attach), 104 DEVMETHOD(device_detach, dcphy_detach), 105 DEVMETHOD(device_shutdown, bus_generic_shutdown), 106 { 0, 0 } 107 }; 108 109 static devclass_t dcphy_devclass; 110 111 static driver_t dcphy_driver = { 112 "dcphy", 113 dcphy_methods, 114 sizeof(struct mii_softc) 115 }; 116 117 DRIVER_MODULE(dcphy, miibus, dcphy_driver, dcphy_devclass, 0, 0); 118 119 int dcphy_service __P((struct mii_softc *, struct mii_data *, int)); 120 void dcphy_status __P((struct mii_softc *)); 121 static int dcphy_auto __P((struct mii_softc *, int)); 122 static void dcphy_reset __P((struct mii_softc *)); 123 124 static int dcphy_probe(dev) 125 device_t dev; 126 { 127 struct mii_attach_args *ma; 128 129 ma = device_get_ivars(dev); 130 131 /* 132 * The dc driver will report the 21143 vendor and device 133 * ID to let us know that it wants us to attach. 134 */ 135 if (ma->mii_id1 != DC_VENDORID_DEC || 136 ma->mii_id2 != DC_DEVICEID_21143) 137 return(ENXIO); 138 139 device_set_desc(dev, "Intel 21143 NWAY media interface"); 140 141 return (0); 142 } 143 144 static int dcphy_attach(dev) 145 device_t dev; 146 { 147 struct mii_softc *sc; 148 struct mii_attach_args *ma; 149 struct mii_data *mii; 150 struct dc_softc *dc_sc; 151 152 sc = device_get_softc(dev); 153 ma = device_get_ivars(dev); 154 sc->mii_dev = device_get_parent(dev); 155 mii = device_get_softc(sc->mii_dev); 156 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 157 158 sc->mii_inst = mii->mii_instance; 159 sc->mii_phy = ma->mii_phyno; 160 sc->mii_service = dcphy_service; 161 sc->mii_pdata = mii; 162 163 sc->mii_flags |= MIIF_NOISOLATE; 164 mii->mii_instance++; 165 166 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 167 168 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 169 BMCR_ISO); 170 171 /*dcphy_reset(sc);*/ 172 dc_sc = mii->mii_ifp->if_softc; 173 CSR_WRITE_4(dc_sc, DC_10BTSTAT, 0); 174 CSR_WRITE_4(dc_sc, DC_10BTCTRL, 0); 175 176 switch(pci_read_config(device_get_parent(sc->mii_dev), 177 DC_PCI_CSID, 4)) { 178 case COMPAQ_PRESARIO_ID: 179 /* Example of how to only allow 10Mbps modes. */ 180 sc->mii_capabilities = BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX; 181 break; 182 default: 183 if (dc_sc->dc_pmode == DC_PMODE_SIA) { 184 sc->mii_capabilities = 185 BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX; 186 } else { 187 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, 188 sc->mii_inst), BMCR_LOOP|BMCR_S100); 189 190 sc->mii_capabilities = 191 BMSR_ANEG|BMSR_100TXFDX|BMSR_100TXHDX| 192 BMSR_10TFDX|BMSR_10THDX; 193 } 194 break; 195 } 196 197 sc->mii_capabilities &= ma->mii_capmask; 198 device_printf(dev, " "); 199 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 200 printf("no media present"); 201 else 202 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); 203 printf("\n"); 204 #undef ADD 205 206 MIIBUS_MEDIAINIT(sc->mii_dev); 207 return(0); 208 } 209 210 static int dcphy_detach(dev) 211 device_t dev; 212 { 213 struct mii_softc *sc; 214 struct mii_data *mii; 215 216 sc = device_get_softc(dev); 217 mii = device_get_softc(device_get_parent(dev)); 218 sc->mii_dev = NULL; 219 LIST_REMOVE(sc, mii_list); 220 221 return(0); 222 } 223 224 int 225 dcphy_service(sc, mii, cmd) 226 struct mii_softc *sc; 227 struct mii_data *mii; 228 int cmd; 229 { 230 struct dc_softc *dc_sc; 231 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 232 int reg; 233 u_int32_t mode; 234 235 dc_sc = mii->mii_ifp->if_softc; 236 237 switch (cmd) { 238 case MII_POLLSTAT: 239 /* 240 * If we're not polling our PHY instance, just return. 241 */ 242 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 243 return (0); 244 } 245 break; 246 247 case MII_MEDIACHG: 248 /* 249 * If the media indicates a different PHY instance, 250 * isolate ourselves. 251 */ 252 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 253 return (0); 254 } 255 256 /* 257 * If the interface is not up, don't do anything. 258 */ 259 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 260 break; 261 262 sc->mii_flags = 0; 263 mii->mii_media_active = IFM_NONE; 264 mode = CSR_READ_4(dc_sc, DC_NETCFG); 265 mode &= ~(DC_NETCFG_FULLDUPLEX|DC_NETCFG_PORTSEL| 266 DC_NETCFG_PCS|DC_NETCFG_SCRAMBLER|DC_NETCFG_SPEEDSEL); 267 268 switch (IFM_SUBTYPE(ife->ifm_media)) { 269 case IFM_AUTO: 270 /*dcphy_reset(sc);*/ 271 sc->mii_flags &= ~MIIF_DOINGAUTO; 272 (void) dcphy_auto(sc, 0); 273 break; 274 case IFM_100_T4: 275 /* 276 * XXX Not supported as a manual setting right now. 277 */ 278 return (EINVAL); 279 case IFM_100_TX: 280 dcphy_reset(sc); 281 DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 282 mode |= DC_NETCFG_PORTSEL|DC_NETCFG_PCS| 283 DC_NETCFG_SCRAMBLER; 284 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 285 mode |= DC_NETCFG_FULLDUPLEX; 286 else 287 mode &= ~DC_NETCFG_FULLDUPLEX; 288 CSR_WRITE_4(dc_sc, DC_NETCFG, mode); 289 break; 290 case IFM_10_T: 291 DC_CLRBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); 292 DC_CLRBIT(dc_sc, DC_10BTCTRL, 0xFFFF); 293 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 294 DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3D); 295 else 296 DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3F); 297 DC_SETBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); 298 DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 299 mode &= ~DC_NETCFG_PORTSEL; 300 mode |= DC_NETCFG_SPEEDSEL; 301 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 302 mode |= DC_NETCFG_FULLDUPLEX; 303 else 304 mode &= ~DC_NETCFG_FULLDUPLEX; 305 CSR_WRITE_4(dc_sc, DC_NETCFG, mode); 306 break; 307 default: 308 return(EINVAL); 309 break; 310 } 311 break; 312 313 case MII_TICK: 314 /* 315 * If we're not currently selected, just return. 316 */ 317 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 318 return (0); 319 320 /* 321 * Only used for autonegotiation. 322 */ 323 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 324 return (0); 325 326 /* 327 * Is the interface even up? 328 */ 329 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 330 return (0); 331 332 reg = CSR_READ_4(dc_sc, DC_10BTSTAT) & 333 (DC_TSTAT_LS10|DC_TSTAT_LS100); 334 335 if (!(reg & DC_TSTAT_LS10) || !(reg & DC_TSTAT_LS100)) 336 return(0); 337 338 /* 339 * Only retry autonegotiation every 5 seconds. 340 */ 341 if (++sc->mii_ticks != 50) 342 return (0); 343 344 sc->mii_ticks = 0; 345 /*if (DC_IS_INTEL(dc_sc))*/ 346 sc->mii_flags &= ~MIIF_DOINGAUTO; 347 dcphy_auto(sc, 0); 348 349 break; 350 } 351 352 /* Update the media status. */ 353 dcphy_status(sc); 354 355 /* Callback if something changed. */ 356 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 357 MIIBUS_STATCHG(sc->mii_dev); 358 sc->mii_active = mii->mii_media_active; 359 } 360 return (0); 361 } 362 363 void 364 dcphy_status(sc) 365 struct mii_softc *sc; 366 { 367 struct mii_data *mii = sc->mii_pdata; 368 int reg, anlpar, tstat = 0; 369 struct dc_softc *dc_sc; 370 371 dc_sc = mii->mii_ifp->if_softc; 372 373 mii->mii_media_status = IFM_AVALID; 374 mii->mii_media_active = IFM_ETHER; 375 376 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 377 return; 378 379 reg = CSR_READ_4(dc_sc, DC_10BTSTAT) & 380 (DC_TSTAT_LS10|DC_TSTAT_LS100); 381 382 if (!(reg & DC_TSTAT_LS10) || !(reg & DC_TSTAT_LS100)) 383 mii->mii_media_status |= IFM_ACTIVE; 384 385 if (CSR_READ_4(dc_sc, DC_10BTCTRL) & DC_TCTL_AUTONEGENBL) { 386 /* Erg, still trying, I guess... */ 387 tstat = CSR_READ_4(dc_sc, DC_10BTSTAT); 388 if ((tstat & DC_TSTAT_ANEGSTAT) != DC_ASTAT_AUTONEGCMP) { 389 if ((DC_IS_MACRONIX(dc_sc) || DC_IS_PNICII(dc_sc)) && 390 (tstat & DC_TSTAT_ANEGSTAT) == DC_ASTAT_DISABLE) 391 goto skip; 392 mii->mii_media_active |= IFM_NONE; 393 return; 394 } 395 396 if (tstat & DC_TSTAT_LP_CAN_NWAY) { 397 anlpar = tstat >> 16; 398 if (anlpar & ANLPAR_T4 && 399 sc->mii_capabilities & BMSR_100TXHDX) 400 mii->mii_media_active |= IFM_100_T4; 401 else if (anlpar & ANLPAR_TX_FD && 402 sc->mii_capabilities & BMSR_100TXFDX) 403 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 404 else if (anlpar & ANLPAR_TX && 405 sc->mii_capabilities & BMSR_100TXHDX) 406 mii->mii_media_active |= IFM_100_TX; 407 else if (anlpar & ANLPAR_10_FD) 408 mii->mii_media_active |= IFM_10_T|IFM_FDX; 409 else if (anlpar & ANLPAR_10) 410 mii->mii_media_active |= IFM_10_T; 411 else 412 mii->mii_media_active |= IFM_NONE; 413 if (DC_IS_INTEL(dc_sc)) 414 DC_CLRBIT(dc_sc, DC_10BTCTRL, 415 DC_TCTL_AUTONEGENBL); 416 return; 417 } 418 /* 419 * If the other side doesn't support NWAY, then the 420 * best we can do is determine if we have a 10Mbps or 421 * 100Mbps link. There's no way to know if the link 422 * is full or half duplex, so we default to half duplex 423 * and hope that the user is clever enough to manually 424 * change the media settings if we're wrong. 425 */ 426 if (!(reg & DC_TSTAT_LS100)) 427 mii->mii_media_active |= IFM_100_TX; 428 else if (!(reg & DC_TSTAT_LS10)) 429 mii->mii_media_active |= IFM_10_T; 430 else 431 mii->mii_media_active |= IFM_NONE; 432 if (DC_IS_INTEL(dc_sc)) 433 DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 434 return; 435 } 436 437 skip: 438 439 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 440 mii->mii_media_active |= IFM_10_T; 441 else 442 mii->mii_media_active |= IFM_100_TX; 443 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 444 mii->mii_media_active |= IFM_FDX; 445 446 return; 447 } 448 449 static int 450 dcphy_auto(mii, waitfor) 451 struct mii_softc *mii; 452 int waitfor; 453 { 454 int i; 455 struct dc_softc *sc; 456 457 sc = mii->mii_pdata->mii_ifp->if_softc; 458 459 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 460 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 461 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 462 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 463 if (mii->mii_capabilities & BMSR_100TXHDX) 464 CSR_WRITE_4(sc, DC_10BTCTRL, 0x3FFFF); 465 else 466 CSR_WRITE_4(sc, DC_10BTCTRL, 0xFFFF); 467 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 468 DC_SETBIT(sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 469 DC_SETBIT(sc, DC_10BTSTAT, DC_ASTAT_TXDISABLE); 470 } 471 472 if (waitfor) { 473 /* Wait 500ms for it to complete. */ 474 for (i = 0; i < 500; i++) { 475 if ((CSR_READ_4(sc, DC_10BTSTAT) & DC_TSTAT_ANEGSTAT) 476 == DC_ASTAT_AUTONEGCMP) 477 return(0); 478 DELAY(1000); 479 } 480 /* 481 * Don't need to worry about clearing MIIF_DOINGAUTO. 482 * If that's set, a timeout is pending, and it will 483 * clear the flag. 484 */ 485 return(EIO); 486 } 487 488 /* 489 * Just let it finish asynchronously. This is for the benefit of 490 * the tick handler driving autonegotiation. Don't want 500ms 491 * delays all the time while the system is running! 492 */ 493 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) 494 mii->mii_flags |= MIIF_DOINGAUTO; 495 496 return(EJUSTRETURN); 497 } 498 499 static void 500 dcphy_reset(mii) 501 struct mii_softc *mii; 502 { 503 struct dc_softc *sc; 504 505 sc = mii->mii_pdata->mii_ifp->if_softc; 506 507 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 508 DELAY(1000); 509 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 510 511 return; 512 } 513 514