1 /* $OpenBSD: xl.c,v 1.85 2008/11/28 02:44:17 brad Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998, 1999 5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * $FreeBSD: if_xl.c,v 1.77 2000/08/28 20:40:03 wpaul Exp $ 35 */ 36 37 /* 38 * 3Com 3c90x Etherlink XL PCI NIC driver 39 * 40 * Supports the 3Com "boomerang", "cyclone", and "hurricane" PCI 41 * bus-master chips (3c90x cards and embedded controllers) including 42 * the following: 43 * 44 * 3Com 3c900-TPO 10Mbps/RJ-45 45 * 3Com 3c900-COMBO 10Mbps/RJ-45,AUI,BNC 46 * 3Com 3c905-TX 10/100Mbps/RJ-45 47 * 3Com 3c905-T4 10/100Mbps/RJ-45 48 * 3Com 3c900B-TPO 10Mbps/RJ-45 49 * 3Com 3c900B-COMBO 10Mbps/RJ-45,AUI,BNC 50 * 3Com 3c900B-TPC 10Mbps/RJ-45,BNC 51 * 3Com 3c900B-FL 10Mbps/Fiber-optic 52 * 3Com 3c905B-COMBO 10/100Mbps/RJ-45,AUI,BNC 53 * 3Com 3c905B-TX 10/100Mbps/RJ-45 54 * 3Com 3c905B-FL/FX 10/100Mbps/Fiber-optic 55 * 3Com 3c905C-TX 10/100Mbps/RJ-45 (Tornado ASIC) 56 * 3Com 3c980-TX 10/100Mbps server adapter (Hurricane ASIC) 57 * 3Com 3c980C-TX 10/100Mbps server adapter (Tornado ASIC) 58 * 3Com 3cSOHO100-TX 10/100Mbps/RJ-45 (Hurricane ASIC) 59 * 3Com 3c450-TX 10/100Mbps/RJ-45 (Tornado ASIC) 60 * 3Com 3c555 10/100Mbps/RJ-45 (MiniPCI, Laptop Hurricane) 61 * 3Com 3c556 10/100Mbps/RJ-45 (MiniPCI, Hurricane ASIC) 62 * 3Com 3c556B 10/100Mbps/RJ-45 (MiniPCI, Hurricane ASIC) 63 * 3Com 3c575TX 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 64 * 3Com 3c575B 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 65 * 3Com 3c575C 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 66 * 3Com 3cxfem656 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 67 * 3Com 3cxfem656b 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) 68 * 3Com 3cxfem656c 10/100Mbps/RJ-45 (Cardbus, Tornado ASIC) 69 * Dell Optiplex GX1 on-board 3c918 10/100Mbps/RJ-45 70 * Dell on-board 3c920 10/100Mbps/RJ-45 71 * Dell Precision on-board 3c905B 10/100Mbps/RJ-45 72 * Dell Latitude laptop docking station embedded 3c905-TX 73 * 74 * Written by Bill Paul <wpaul@ctr.columbia.edu> 75 * Electrical Engineering Department 76 * Columbia University, New York City 77 */ 78 79 /* 80 * The 3c90x series chips use a bus-master DMA interface for transfering 81 * packets to and from the controller chip. Some of the "vortex" cards 82 * (3c59x) also supported a bus master mode, however for those chips 83 * you could only DMA packets to/from a contiguous memory buffer. For 84 * transmission this would mean copying the contents of the queued mbuf 85 * chain into an mbuf cluster and then DMAing the cluster. This extra 86 * copy would sort of defeat the purpose of the bus master support for 87 * any packet that doesn't fit into a single mbuf. 88 * 89 * By contrast, the 3c90x cards support a fragment-based bus master 90 * mode where mbuf chains can be encapsulated using TX descriptors. 91 * This is similar to other PCI chips such as the Texas Instruments 92 * ThunderLAN and the Intel 82557/82558. 93 * 94 * The "vortex" driver (if_vx.c) happens to work for the "boomerang" 95 * bus master chips because they maintain the old PIO interface for 96 * backwards compatibility, but starting with the 3c905B and the 97 * "cyclone" chips, the compatibility interface has been dropped. 98 * Since using bus master DMA is a big win, we use this driver to 99 * support the PCI "boomerang" chips even though they work with the 100 * "vortex" driver in order to obtain better performance. 101 */ 102 103 #include "bpfilter.h" 104 105 #include <sys/param.h> 106 #include <sys/systm.h> 107 #include <sys/mbuf.h> 108 #include <sys/protosw.h> 109 #include <sys/socket.h> 110 #include <sys/ioctl.h> 111 #include <sys/errno.h> 112 #include <sys/malloc.h> 113 #include <sys/kernel.h> 114 #include <sys/proc.h> /* only for declaration of wakeup() used by vm.h */ 115 #include <sys/device.h> 116 117 #include <net/if.h> 118 #include <net/if_dl.h> 119 #include <net/if_types.h> 120 #include <net/if_media.h> 121 122 #ifdef INET 123 #include <netinet/in.h> 124 #include <netinet/in_systm.h> 125 #include <netinet/in_var.h> 126 #include <netinet/ip.h> 127 #include <netinet/if_ether.h> 128 #endif 129 130 #include <dev/mii/mii.h> 131 #include <dev/mii/miivar.h> 132 133 #include <machine/bus.h> 134 135 #if NBPFILTER > 0 136 #include <net/bpf.h> 137 #endif 138 139 #include <dev/ic/xlreg.h> 140 141 /* 142 * TX Checksumming is disabled by default for two reasons: 143 * - TX Checksumming will occasionally produce corrupt packets 144 * - TX Checksumming seems to reduce performance 145 * 146 * Only 905B/C cards were reported to have this problem, it is possible 147 * that later chips _may_ be immune. 148 */ 149 #define XL905B_TXCSUM_BROKEN 1 150 151 int xl_newbuf(struct xl_softc *, struct xl_chain_onefrag *); 152 void xl_stats_update(void *); 153 int xl_encap(struct xl_softc *, struct xl_chain *, 154 struct mbuf * ); 155 void xl_rxeof(struct xl_softc *); 156 int xl_rx_resync(struct xl_softc *); 157 void xl_txeof(struct xl_softc *); 158 void xl_txeof_90xB(struct xl_softc *); 159 void xl_txeoc(struct xl_softc *); 160 int xl_intr(void *); 161 void xl_start(struct ifnet *); 162 void xl_start_90xB(struct ifnet *); 163 int xl_ioctl(struct ifnet *, u_long, caddr_t); 164 void xl_init(void *); 165 void xl_stop(struct xl_softc *); 166 void xl_freetxrx(struct xl_softc *); 167 void xl_watchdog(struct ifnet *); 168 void xl_shutdown(void *); 169 int xl_ifmedia_upd(struct ifnet *); 170 void xl_ifmedia_sts(struct ifnet *, struct ifmediareq *); 171 172 int xl_eeprom_wait(struct xl_softc *); 173 int xl_read_eeprom(struct xl_softc *, caddr_t, int, int, int); 174 void xl_mii_sync(struct xl_softc *); 175 void xl_mii_send(struct xl_softc *, u_int32_t, int); 176 int xl_mii_readreg(struct xl_softc *, struct xl_mii_frame *); 177 int xl_mii_writereg(struct xl_softc *, struct xl_mii_frame *); 178 179 void xl_setcfg(struct xl_softc *); 180 void xl_setmode(struct xl_softc *, int); 181 void xl_setmulti(struct xl_softc *); 182 void xl_setmulti_hash(struct xl_softc *); 183 void xl_setpromisc(struct xl_softc *); 184 void xl_reset(struct xl_softc *); 185 int xl_list_rx_init(struct xl_softc *); 186 int xl_list_tx_init(struct xl_softc *); 187 int xl_list_tx_init_90xB(struct xl_softc *); 188 void xl_wait(struct xl_softc *); 189 void xl_mediacheck(struct xl_softc *); 190 void xl_choose_xcvr(struct xl_softc *, int); 191 #ifdef notdef 192 void xl_testpacket(struct xl_softc *); 193 #endif 194 195 int xl_miibus_readreg(struct device *, int, int); 196 void xl_miibus_writereg(struct device *, int, int, int); 197 void xl_miibus_statchg(struct device *); 198 199 void xl_power(int, void *); 200 201 void 202 xl_power(int why, void *arg) 203 { 204 struct xl_softc *sc = arg; 205 struct ifnet *ifp; 206 int s; 207 208 s = splnet(); 209 if (why != PWR_RESUME) 210 xl_stop(sc); 211 else { 212 ifp = &sc->sc_arpcom.ac_if; 213 if (ifp->if_flags & IFF_UP) { 214 xl_reset(sc); 215 xl_init(sc); 216 } 217 } 218 splx(s); 219 } 220 221 /* 222 * Murphy's law says that it's possible the chip can wedge and 223 * the 'command in progress' bit may never clear. Hence, we wait 224 * only a finite amount of time to avoid getting caught in an 225 * infinite loop. Normally this delay routine would be a macro, 226 * but it isn't called during normal operation so we can afford 227 * to make it a function. 228 */ 229 void 230 xl_wait(struct xl_softc *sc) 231 { 232 int i; 233 234 for (i = 0; i < XL_TIMEOUT; i++) { 235 if (!(CSR_READ_2(sc, XL_STATUS) & XL_STAT_CMDBUSY)) 236 break; 237 } 238 239 if (i == XL_TIMEOUT) 240 printf("%s: command never completed!\n", sc->sc_dev.dv_xname); 241 } 242 243 /* 244 * MII access routines are provided for adapters with external 245 * PHYs (3c905-TX, 3c905-T4, 3c905B-T4) and those with built-in 246 * autoneg logic that's faked up to look like a PHY (3c905B-TX). 247 * Note: if you don't perform the MDIO operations just right, 248 * it's possible to end up with code that works correctly with 249 * some chips/CPUs/processor speeds/bus speeds/etc but not 250 * with others. 251 */ 252 #define MII_SET(x) \ 253 CSR_WRITE_2(sc, XL_W4_PHY_MGMT, \ 254 CSR_READ_2(sc, XL_W4_PHY_MGMT) | (x)) 255 256 #define MII_CLR(x) \ 257 CSR_WRITE_2(sc, XL_W4_PHY_MGMT, \ 258 CSR_READ_2(sc, XL_W4_PHY_MGMT) & ~(x)) 259 260 /* 261 * Sync the PHYs by setting data bit and strobing the clock 32 times. 262 */ 263 void 264 xl_mii_sync(struct xl_softc *sc) 265 { 266 int i; 267 268 XL_SEL_WIN(4); 269 MII_SET(XL_MII_DIR|XL_MII_DATA); 270 271 for (i = 0; i < 32; i++) { 272 MII_SET(XL_MII_CLK); 273 MII_SET(XL_MII_DATA); 274 MII_SET(XL_MII_DATA); 275 MII_CLR(XL_MII_CLK); 276 MII_SET(XL_MII_DATA); 277 MII_SET(XL_MII_DATA); 278 } 279 } 280 281 /* 282 * Clock a series of bits through the MII. 283 */ 284 void 285 xl_mii_send(struct xl_softc *sc, u_int32_t bits, int cnt) 286 { 287 int i; 288 289 XL_SEL_WIN(4); 290 MII_CLR(XL_MII_CLK); 291 292 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 293 if (bits & i) { 294 MII_SET(XL_MII_DATA); 295 } else { 296 MII_CLR(XL_MII_DATA); 297 } 298 MII_CLR(XL_MII_CLK); 299 MII_SET(XL_MII_CLK); 300 } 301 } 302 303 /* 304 * Read an PHY register through the MII. 305 */ 306 int 307 xl_mii_readreg(struct xl_softc *sc, struct xl_mii_frame *frame) 308 { 309 int i, ack, s; 310 311 s = splnet(); 312 313 /* 314 * Set up frame for RX. 315 */ 316 frame->mii_stdelim = XL_MII_STARTDELIM; 317 frame->mii_opcode = XL_MII_READOP; 318 frame->mii_turnaround = 0; 319 frame->mii_data = 0; 320 321 /* 322 * Select register window 4. 323 */ 324 325 XL_SEL_WIN(4); 326 327 CSR_WRITE_2(sc, XL_W4_PHY_MGMT, 0); 328 /* 329 * Turn on data xmit. 330 */ 331 MII_SET(XL_MII_DIR); 332 333 xl_mii_sync(sc); 334 335 /* 336 * Send command/address info. 337 */ 338 xl_mii_send(sc, frame->mii_stdelim, 2); 339 xl_mii_send(sc, frame->mii_opcode, 2); 340 xl_mii_send(sc, frame->mii_phyaddr, 5); 341 xl_mii_send(sc, frame->mii_regaddr, 5); 342 343 /* Idle bit */ 344 MII_CLR((XL_MII_CLK|XL_MII_DATA)); 345 MII_SET(XL_MII_CLK); 346 347 /* Turn off xmit. */ 348 MII_CLR(XL_MII_DIR); 349 350 /* Check for ack */ 351 MII_CLR(XL_MII_CLK); 352 ack = CSR_READ_2(sc, XL_W4_PHY_MGMT) & XL_MII_DATA; 353 MII_SET(XL_MII_CLK); 354 355 /* 356 * Now try reading data bits. If the ack failed, we still 357 * need to clock through 16 cycles to keep the PHY(s) in sync. 358 */ 359 if (ack) { 360 for(i = 0; i < 16; i++) { 361 MII_CLR(XL_MII_CLK); 362 MII_SET(XL_MII_CLK); 363 } 364 goto fail; 365 } 366 367 for (i = 0x8000; i; i >>= 1) { 368 MII_CLR(XL_MII_CLK); 369 if (!ack) { 370 if (CSR_READ_2(sc, XL_W4_PHY_MGMT) & XL_MII_DATA) 371 frame->mii_data |= i; 372 } 373 MII_SET(XL_MII_CLK); 374 } 375 376 fail: 377 378 MII_CLR(XL_MII_CLK); 379 MII_SET(XL_MII_CLK); 380 381 splx(s); 382 383 if (ack) 384 return (1); 385 return (0); 386 } 387 388 /* 389 * Write to a PHY register through the MII. 390 */ 391 int 392 xl_mii_writereg(struct xl_softc *sc, struct xl_mii_frame *frame) 393 { 394 int s; 395 396 s = splnet(); 397 398 /* 399 * Set up frame for TX. 400 */ 401 402 frame->mii_stdelim = XL_MII_STARTDELIM; 403 frame->mii_opcode = XL_MII_WRITEOP; 404 frame->mii_turnaround = XL_MII_TURNAROUND; 405 406 /* 407 * Select the window 4. 408 */ 409 XL_SEL_WIN(4); 410 411 /* 412 * Turn on data output. 413 */ 414 MII_SET(XL_MII_DIR); 415 416 xl_mii_sync(sc); 417 418 xl_mii_send(sc, frame->mii_stdelim, 2); 419 xl_mii_send(sc, frame->mii_opcode, 2); 420 xl_mii_send(sc, frame->mii_phyaddr, 5); 421 xl_mii_send(sc, frame->mii_regaddr, 5); 422 xl_mii_send(sc, frame->mii_turnaround, 2); 423 xl_mii_send(sc, frame->mii_data, 16); 424 425 /* Idle bit. */ 426 MII_SET(XL_MII_CLK); 427 MII_CLR(XL_MII_CLK); 428 429 /* 430 * Turn off xmit. 431 */ 432 MII_CLR(XL_MII_DIR); 433 434 splx(s); 435 436 return (0); 437 } 438 439 int 440 xl_miibus_readreg(struct device *self, int phy, int reg) 441 { 442 struct xl_softc *sc = (struct xl_softc *)self; 443 struct xl_mii_frame frame; 444 445 if (!(sc->xl_flags & XL_FLAG_PHYOK) && phy != 24) 446 return (0); 447 448 bzero((char *)&frame, sizeof(frame)); 449 450 frame.mii_phyaddr = phy; 451 frame.mii_regaddr = reg; 452 xl_mii_readreg(sc, &frame); 453 454 return (frame.mii_data); 455 } 456 457 void 458 xl_miibus_writereg(struct device *self, int phy, int reg, int data) 459 { 460 struct xl_softc *sc = (struct xl_softc *)self; 461 struct xl_mii_frame frame; 462 463 if (!(sc->xl_flags & XL_FLAG_PHYOK) && phy != 24) 464 return; 465 466 bzero((char *)&frame, sizeof(frame)); 467 468 frame.mii_phyaddr = phy; 469 frame.mii_regaddr = reg; 470 frame.mii_data = data; 471 472 xl_mii_writereg(sc, &frame); 473 } 474 475 void 476 xl_miibus_statchg(struct device *self) 477 { 478 struct xl_softc *sc = (struct xl_softc *)self; 479 480 xl_setcfg(sc); 481 482 /* Set ASIC's duplex mode to match the PHY. */ 483 XL_SEL_WIN(3); 484 if ((sc->sc_mii.mii_media_active & IFM_GMASK) == IFM_FDX) 485 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, XL_MACCTRL_DUPLEX); 486 else 487 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, 488 (CSR_READ_1(sc, XL_W3_MAC_CTRL) & ~XL_MACCTRL_DUPLEX)); 489 } 490 491 /* 492 * The EEPROM is slow: give it time to come ready after issuing 493 * it a command. 494 */ 495 int 496 xl_eeprom_wait(struct xl_softc *sc) 497 { 498 int i; 499 500 for (i = 0; i < 100; i++) { 501 if (CSR_READ_2(sc, XL_W0_EE_CMD) & XL_EE_BUSY) 502 DELAY(162); 503 else 504 break; 505 } 506 507 if (i == 100) { 508 printf("%s: eeprom failed to come ready\n", sc->sc_dev.dv_xname); 509 return (1); 510 } 511 512 return (0); 513 } 514 515 /* 516 * Read a sequence of words from the EEPROM. Note that ethernet address 517 * data is stored in the EEPROM in network byte order. 518 */ 519 int 520 xl_read_eeprom(struct xl_softc *sc, caddr_t dest, int off, int cnt, int swap) 521 { 522 int err = 0, i; 523 u_int16_t word = 0, *ptr; 524 #define EEPROM_5BIT_OFFSET(A) ((((A) << 2) & 0x7F00) | ((A) & 0x003F)) 525 #define EEPROM_8BIT_OFFSET(A) ((A) & 0x003F) 526 /* WARNING! DANGER! 527 * It's easy to accidentally overwrite the rom content! 528 * Note: the 3c575 uses 8bit EEPROM offsets. 529 */ 530 XL_SEL_WIN(0); 531 532 if (xl_eeprom_wait(sc)) 533 return (1); 534 535 if (sc->xl_flags & XL_FLAG_EEPROM_OFFSET_30) 536 off += 0x30; 537 538 for (i = 0; i < cnt; i++) { 539 if (sc->xl_flags & XL_FLAG_8BITROM) 540 CSR_WRITE_2(sc, XL_W0_EE_CMD, 541 XL_EE_8BIT_READ | EEPROM_8BIT_OFFSET(off + i)); 542 else 543 CSR_WRITE_2(sc, XL_W0_EE_CMD, 544 XL_EE_READ | EEPROM_5BIT_OFFSET(off + i)); 545 err = xl_eeprom_wait(sc); 546 if (err) 547 break; 548 word = CSR_READ_2(sc, XL_W0_EE_DATA); 549 ptr = (u_int16_t *)(dest + (i * 2)); 550 if (swap) 551 *ptr = ntohs(word); 552 else 553 *ptr = word; 554 } 555 556 return (err ? 1 : 0); 557 } 558 559 /* 560 * NICs older than the 3c905B have only one multicast option, which 561 * is to enable reception of all multicast frames. 562 */ 563 void 564 xl_setmulti(struct xl_softc *sc) 565 { 566 struct ifnet *ifp; 567 struct arpcom *ac = &sc->sc_arpcom; 568 u_int8_t rxfilt; 569 570 ifp = &sc->sc_arpcom.ac_if; 571 572 XL_SEL_WIN(5); 573 rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); 574 575 if (ifp->if_flags & IFF_ALLMULTI) { 576 rxfilt |= XL_RXFILTER_ALLMULTI; 577 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); 578 return; 579 } 580 581 if (ac->ac_multicnt > 0) 582 rxfilt |= XL_RXFILTER_ALLMULTI; 583 else 584 rxfilt &= ~XL_RXFILTER_ALLMULTI; 585 586 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); 587 } 588 589 /* 590 * 3c905B adapters have a hash filter that we can program. 591 */ 592 void 593 xl_setmulti_hash(struct xl_softc *sc) 594 { 595 struct ifnet *ifp; 596 int h = 0, i; 597 struct arpcom *ac = &sc->sc_arpcom; 598 struct ether_multi *enm; 599 struct ether_multistep step; 600 u_int8_t rxfilt; 601 int mcnt = 0; 602 603 ifp = &sc->sc_arpcom.ac_if; 604 605 XL_SEL_WIN(5); 606 rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); 607 608 if (ifp->if_flags & IFF_ALLMULTI) { 609 allmulti: 610 rxfilt |= XL_RXFILTER_ALLMULTI; 611 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); 612 return; 613 } else 614 rxfilt &= ~XL_RXFILTER_ALLMULTI; 615 616 617 /* first, zot all the existing hash bits */ 618 for (i = 0; i < XL_HASHFILT_SIZE; i++) 619 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_HASH|i); 620 621 /* now program new ones */ 622 ETHER_FIRST_MULTI(step, ac, enm); 623 while (enm != NULL) { 624 if (bcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 625 ifp->if_flags |= IFF_ALLMULTI; 626 goto allmulti; 627 } 628 h = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN) & 629 0x000000FF; 630 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_HASH|XL_HASH_SET|h); 631 mcnt++; 632 ETHER_NEXT_MULTI(step, enm); 633 } 634 635 if (mcnt) 636 rxfilt |= XL_RXFILTER_MULTIHASH; 637 else 638 rxfilt &= ~XL_RXFILTER_MULTIHASH; 639 640 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); 641 } 642 643 void 644 xl_setpromisc(struct xl_softc *sc) 645 { 646 struct ifnet *ifp; 647 u_int8_t rxfilt; 648 649 ifp = &sc->sc_arpcom.ac_if; 650 651 XL_SEL_WIN(5); 652 rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); 653 654 if (ifp->if_flags & IFF_PROMISC) 655 rxfilt |= XL_RXFILTER_ALLFRAMES; 656 else 657 rxfilt &= ~XL_RXFILTER_ALLFRAMES; 658 659 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); 660 } 661 662 663 #ifdef notdef 664 void 665 xl_testpacket(struct xl_softc *sc) 666 { 667 struct mbuf *m; 668 struct ifnet *ifp; 669 int error; 670 671 ifp = &sc->sc_arpcom.ac_if; 672 673 MGETHDR(m, M_DONTWAIT, MT_DATA); 674 675 if (m == NULL) 676 return; 677 678 bcopy(&sc->sc_arpcom.ac_enaddr, 679 mtod(m, struct ether_header *)->ether_dhost, ETHER_ADDR_LEN); 680 bcopy(&sc->sc_arpcom.ac_enaddr, 681 mtod(m, struct ether_header *)->ether_shost, ETHER_ADDR_LEN); 682 mtod(m, struct ether_header *)->ether_type = htons(3); 683 mtod(m, unsigned char *)[14] = 0; 684 mtod(m, unsigned char *)[15] = 0; 685 mtod(m, unsigned char *)[16] = 0xE3; 686 m->m_len = m->m_pkthdr.len = sizeof(struct ether_header) + 3; 687 IFQ_ENQUEUE(&ifp->if_snd, m, NULL, error); 688 xl_start(ifp); 689 } 690 #endif 691 692 void 693 xl_setcfg(struct xl_softc *sc) 694 { 695 u_int32_t icfg; 696 697 XL_SEL_WIN(3); 698 icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG); 699 icfg &= ~XL_ICFG_CONNECTOR_MASK; 700 if (sc->xl_media & XL_MEDIAOPT_MII || 701 sc->xl_media & XL_MEDIAOPT_BT4) 702 icfg |= (XL_XCVR_MII << XL_ICFG_CONNECTOR_BITS); 703 if (sc->xl_media & XL_MEDIAOPT_BTX) 704 icfg |= (XL_XCVR_AUTO << XL_ICFG_CONNECTOR_BITS); 705 706 CSR_WRITE_4(sc, XL_W3_INTERNAL_CFG, icfg); 707 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 708 } 709 710 void 711 xl_setmode(struct xl_softc *sc, int media) 712 { 713 struct ifnet *ifp = &sc->sc_arpcom.ac_if; 714 u_int32_t icfg; 715 u_int16_t mediastat; 716 717 XL_SEL_WIN(4); 718 mediastat = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); 719 XL_SEL_WIN(3); 720 icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG); 721 722 if (sc->xl_media & XL_MEDIAOPT_BT) { 723 if (IFM_SUBTYPE(media) == IFM_10_T) { 724 ifp->if_baudrate = IF_Mbps(10); 725 sc->xl_xcvr = XL_XCVR_10BT; 726 icfg &= ~XL_ICFG_CONNECTOR_MASK; 727 icfg |= (XL_XCVR_10BT << XL_ICFG_CONNECTOR_BITS); 728 mediastat |= XL_MEDIASTAT_LINKBEAT| 729 XL_MEDIASTAT_JABGUARD; 730 mediastat &= ~XL_MEDIASTAT_SQEENB; 731 } 732 } 733 734 if (sc->xl_media & XL_MEDIAOPT_BFX) { 735 if (IFM_SUBTYPE(media) == IFM_100_FX) { 736 ifp->if_baudrate = IF_Mbps(100); 737 sc->xl_xcvr = XL_XCVR_100BFX; 738 icfg &= ~XL_ICFG_CONNECTOR_MASK; 739 icfg |= (XL_XCVR_100BFX << XL_ICFG_CONNECTOR_BITS); 740 mediastat |= XL_MEDIASTAT_LINKBEAT; 741 mediastat &= ~XL_MEDIASTAT_SQEENB; 742 } 743 } 744 745 if (sc->xl_media & (XL_MEDIAOPT_AUI|XL_MEDIAOPT_10FL)) { 746 if (IFM_SUBTYPE(media) == IFM_10_5) { 747 ifp->if_baudrate = IF_Mbps(10); 748 sc->xl_xcvr = XL_XCVR_AUI; 749 icfg &= ~XL_ICFG_CONNECTOR_MASK; 750 icfg |= (XL_XCVR_AUI << XL_ICFG_CONNECTOR_BITS); 751 mediastat &= ~(XL_MEDIASTAT_LINKBEAT| 752 XL_MEDIASTAT_JABGUARD); 753 mediastat |= ~XL_MEDIASTAT_SQEENB; 754 } 755 if (IFM_SUBTYPE(media) == IFM_10_FL) { 756 ifp->if_baudrate = IF_Mbps(10); 757 sc->xl_xcvr = XL_XCVR_AUI; 758 icfg &= ~XL_ICFG_CONNECTOR_MASK; 759 icfg |= (XL_XCVR_AUI << XL_ICFG_CONNECTOR_BITS); 760 mediastat &= ~(XL_MEDIASTAT_LINKBEAT| 761 XL_MEDIASTAT_JABGUARD); 762 mediastat |= ~XL_MEDIASTAT_SQEENB; 763 } 764 } 765 766 if (sc->xl_media & XL_MEDIAOPT_BNC) { 767 if (IFM_SUBTYPE(media) == IFM_10_2) { 768 ifp->if_baudrate = IF_Mbps(10); 769 sc->xl_xcvr = XL_XCVR_COAX; 770 icfg &= ~XL_ICFG_CONNECTOR_MASK; 771 icfg |= (XL_XCVR_COAX << XL_ICFG_CONNECTOR_BITS); 772 mediastat &= ~(XL_MEDIASTAT_LINKBEAT| 773 XL_MEDIASTAT_JABGUARD| 774 XL_MEDIASTAT_SQEENB); 775 } 776 } 777 778 if ((media & IFM_GMASK) == IFM_FDX || 779 IFM_SUBTYPE(media) == IFM_100_FX) { 780 XL_SEL_WIN(3); 781 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, XL_MACCTRL_DUPLEX); 782 } else { 783 XL_SEL_WIN(3); 784 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, 785 (CSR_READ_1(sc, XL_W3_MAC_CTRL) & ~XL_MACCTRL_DUPLEX)); 786 } 787 788 if (IFM_SUBTYPE(media) == IFM_10_2) 789 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_START); 790 else 791 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 792 CSR_WRITE_4(sc, XL_W3_INTERNAL_CFG, icfg); 793 XL_SEL_WIN(4); 794 CSR_WRITE_2(sc, XL_W4_MEDIA_STATUS, mediastat); 795 DELAY(800); 796 XL_SEL_WIN(7); 797 } 798 799 void 800 xl_reset(struct xl_softc *sc) 801 { 802 int i; 803 804 XL_SEL_WIN(0); 805 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RESET | 806 ((sc->xl_flags & XL_FLAG_WEIRDRESET) ? 807 XL_RESETOPT_DISADVFD:0)); 808 809 /* 810 * Pause briefly after issuing the reset command before trying 811 * to access any other registers. With my 3c575C cardbus card, 812 * failing to do this results in the system locking up while 813 * trying to poll the command busy bit in the status register. 814 */ 815 DELAY(100000); 816 817 for (i = 0; i < XL_TIMEOUT; i++) { 818 DELAY(10); 819 if (!(CSR_READ_2(sc, XL_STATUS) & XL_STAT_CMDBUSY)) 820 break; 821 } 822 823 if (i == XL_TIMEOUT) 824 printf("%s: reset didn't complete\n", sc->sc_dev.dv_xname); 825 826 /* Note: the RX reset takes an absurd amount of time 827 * on newer versions of the Tornado chips such as those 828 * on the 3c905CX and newer 3c908C cards. We wait an 829 * extra amount of time so that xl_wait() doesn't complain 830 * and annoy the users. 831 */ 832 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 833 DELAY(100000); 834 xl_wait(sc); 835 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 836 xl_wait(sc); 837 838 if (sc->xl_flags & XL_FLAG_INVERT_LED_PWR || 839 sc->xl_flags & XL_FLAG_INVERT_MII_PWR) { 840 XL_SEL_WIN(2); 841 CSR_WRITE_2(sc, XL_W2_RESET_OPTIONS, CSR_READ_2(sc, 842 XL_W2_RESET_OPTIONS) 843 | ((sc->xl_flags & XL_FLAG_INVERT_LED_PWR)?XL_RESETOPT_INVERT_LED:0) 844 | ((sc->xl_flags & XL_FLAG_INVERT_MII_PWR)?XL_RESETOPT_INVERT_MII:0) 845 ); 846 } 847 848 /* Wait a little while for the chip to get its brains in order. */ 849 DELAY(100000); 850 } 851 852 /* 853 * This routine is a kludge to work around possible hardware faults 854 * or manufacturing defects that can cause the media options register 855 * (or reset options register, as it's called for the first generation 856 * 3c90x adapters) to return an incorrect result. I have encountered 857 * one Dell Latitude laptop docking station with an integrated 3c905-TX 858 * which doesn't have any of the 'mediaopt' bits set. This screws up 859 * the attach routine pretty badly because it doesn't know what media 860 * to look for. If we find ourselves in this predicament, this routine 861 * will try to guess the media options values and warn the user of a 862 * possible manufacturing defect with his adapter/system/whatever. 863 */ 864 void 865 xl_mediacheck(struct xl_softc *sc) 866 { 867 /* 868 * If some of the media options bits are set, assume they are 869 * correct. If not, try to figure it out down below. 870 * XXX I should check for 10baseFL, but I don't have an adapter 871 * to test with. 872 */ 873 if (sc->xl_media & (XL_MEDIAOPT_MASK & ~XL_MEDIAOPT_VCO)) { 874 /* 875 * Check the XCVR value. If it's not in the normal range 876 * of values, we need to fake it up here. 877 */ 878 if (sc->xl_xcvr <= XL_XCVR_AUTO) 879 return; 880 else { 881 printf("%s: bogus xcvr value " 882 "in EEPROM (%x)\n", sc->sc_dev.dv_xname, sc->xl_xcvr); 883 printf("%s: choosing new default based " 884 "on card type\n", sc->sc_dev.dv_xname); 885 } 886 } else { 887 if (sc->xl_type == XL_TYPE_905B && 888 sc->xl_media & XL_MEDIAOPT_10FL) 889 return; 890 printf("%s: WARNING: no media options bits set in " 891 "the media options register!!\n", sc->sc_dev.dv_xname); 892 printf("%s: this could be a manufacturing defect in " 893 "your adapter or system\n", sc->sc_dev.dv_xname); 894 printf("%s: attempting to guess media type; you " 895 "should probably consult your vendor\n", sc->sc_dev.dv_xname); 896 } 897 898 xl_choose_xcvr(sc, 1); 899 } 900 901 void 902 xl_choose_xcvr(struct xl_softc *sc, int verbose) 903 { 904 u_int16_t devid; 905 906 /* 907 * Read the device ID from the EEPROM. 908 * This is what's loaded into the PCI device ID register, so it has 909 * to be correct otherwise we wouldn't have gotten this far. 910 */ 911 xl_read_eeprom(sc, (caddr_t)&devid, XL_EE_PRODID, 1, 0); 912 913 switch(devid) { 914 case TC_DEVICEID_BOOMERANG_10BT: /* 3c900-TPO */ 915 case TC_DEVICEID_KRAKATOA_10BT: /* 3c900B-TPO */ 916 sc->xl_media = XL_MEDIAOPT_BT; 917 sc->xl_xcvr = XL_XCVR_10BT; 918 if (verbose) 919 printf("%s: guessing 10BaseT transceiver\n", 920 sc->sc_dev.dv_xname); 921 break; 922 case TC_DEVICEID_BOOMERANG_10BT_COMBO: /* 3c900-COMBO */ 923 case TC_DEVICEID_KRAKATOA_10BT_COMBO: /* 3c900B-COMBO */ 924 sc->xl_media = XL_MEDIAOPT_BT|XL_MEDIAOPT_BNC|XL_MEDIAOPT_AUI; 925 sc->xl_xcvr = XL_XCVR_10BT; 926 if (verbose) 927 printf("%s: guessing COMBO (AUI/BNC/TP)\n", 928 sc->sc_dev.dv_xname); 929 break; 930 case TC_DEVICEID_KRAKATOA_10BT_TPC: /* 3c900B-TPC */ 931 sc->xl_media = XL_MEDIAOPT_BT|XL_MEDIAOPT_BNC; 932 sc->xl_xcvr = XL_XCVR_10BT; 933 if (verbose) 934 printf("%s: guessing TPC (BNC/TP)\n", sc->sc_dev.dv_xname); 935 break; 936 case TC_DEVICEID_CYCLONE_10FL: /* 3c900B-FL */ 937 sc->xl_media = XL_MEDIAOPT_10FL; 938 sc->xl_xcvr = XL_XCVR_AUI; 939 if (verbose) 940 printf("%s: guessing 10baseFL\n", sc->sc_dev.dv_xname); 941 break; 942 case TC_DEVICEID_BOOMERANG_10_100BT: /* 3c905-TX */ 943 case TC_DEVICEID_HURRICANE_555: /* 3c555 */ 944 case TC_DEVICEID_HURRICANE_556: /* 3c556 */ 945 case TC_DEVICEID_HURRICANE_556B: /* 3c556B */ 946 case TC_DEVICEID_HURRICANE_575A: /* 3c575TX */ 947 case TC_DEVICEID_HURRICANE_575B: /* 3c575B */ 948 case TC_DEVICEID_HURRICANE_575C: /* 3c575C */ 949 case TC_DEVICEID_HURRICANE_656: /* 3c656 */ 950 case TC_DEVICEID_HURRICANE_656B: /* 3c656B */ 951 case TC_DEVICEID_TORNADO_656C: /* 3c656C */ 952 case TC_DEVICEID_TORNADO_10_100BT_920B: /* 3c920B-EMB */ 953 sc->xl_media = XL_MEDIAOPT_MII; 954 sc->xl_xcvr = XL_XCVR_MII; 955 if (verbose) 956 printf("%s: guessing MII\n", sc->sc_dev.dv_xname); 957 break; 958 case TC_DEVICEID_BOOMERANG_100BT4: /* 3c905-T4 */ 959 case TC_DEVICEID_CYCLONE_10_100BT4: /* 3c905B-T4 */ 960 sc->xl_media = XL_MEDIAOPT_BT4; 961 sc->xl_xcvr = XL_XCVR_MII; 962 if (verbose) 963 printf("%s: guessing 100BaseT4/MII\n", sc->sc_dev.dv_xname); 964 break; 965 case TC_DEVICEID_HURRICANE_10_100BT: /* 3c905B-TX */ 966 case TC_DEVICEID_HURRICANE_10_100BT_SERV:/* 3c980-TX */ 967 case TC_DEVICEID_TORNADO_10_100BT_SERV: /* 3c980C-TX */ 968 case TC_DEVICEID_HURRICANE_SOHO100TX: /* 3cSOHO100-TX */ 969 case TC_DEVICEID_TORNADO_10_100BT: /* 3c905C-TX */ 970 case TC_DEVICEID_TORNADO_HOMECONNECT: /* 3c450-TX */ 971 sc->xl_media = XL_MEDIAOPT_BTX; 972 sc->xl_xcvr = XL_XCVR_AUTO; 973 if (verbose) 974 printf("%s: guessing 10/100 internal\n", 975 sc->sc_dev.dv_xname); 976 break; 977 case TC_DEVICEID_CYCLONE_10_100_COMBO: /* 3c905B-COMBO */ 978 sc->xl_media = XL_MEDIAOPT_BTX|XL_MEDIAOPT_BNC|XL_MEDIAOPT_AUI; 979 sc->xl_xcvr = XL_XCVR_AUTO; 980 if (verbose) 981 printf("%s: guessing 10/100 plus BNC/AUI\n", 982 sc->sc_dev.dv_xname); 983 break; 984 default: 985 printf("%s: unknown device ID: %x -- " 986 "defaulting to 10baseT\n", sc->sc_dev.dv_xname, devid); 987 sc->xl_media = XL_MEDIAOPT_BT; 988 break; 989 } 990 } 991 992 /* 993 * Initialize the transmit descriptors. 994 */ 995 int 996 xl_list_tx_init(struct xl_softc *sc) 997 { 998 struct xl_chain_data *cd; 999 struct xl_list_data *ld; 1000 int i; 1001 1002 cd = &sc->xl_cdata; 1003 ld = sc->xl_ldata; 1004 for (i = 0; i < XL_TX_LIST_CNT; i++) { 1005 cd->xl_tx_chain[i].xl_ptr = &ld->xl_tx_list[i]; 1006 if (i == (XL_TX_LIST_CNT - 1)) 1007 cd->xl_tx_chain[i].xl_next = NULL; 1008 else 1009 cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[i + 1]; 1010 } 1011 1012 cd->xl_tx_free = &cd->xl_tx_chain[0]; 1013 cd->xl_tx_tail = cd->xl_tx_head = NULL; 1014 1015 return (0); 1016 } 1017 1018 /* 1019 * Initialize the transmit descriptors. 1020 */ 1021 int 1022 xl_list_tx_init_90xB(struct xl_softc *sc) 1023 { 1024 struct xl_chain_data *cd; 1025 struct xl_list_data *ld; 1026 int i, next, prev; 1027 1028 cd = &sc->xl_cdata; 1029 ld = sc->xl_ldata; 1030 for (i = 0; i < XL_TX_LIST_CNT; i++) { 1031 if (i == (XL_TX_LIST_CNT - 1)) 1032 next = 0; 1033 else 1034 next = i + 1; 1035 if (i == 0) 1036 prev = XL_TX_LIST_CNT - 1; 1037 else 1038 prev = i - 1; 1039 cd->xl_tx_chain[i].xl_ptr = &ld->xl_tx_list[i]; 1040 cd->xl_tx_chain[i].xl_phys = 1041 sc->sc_listmap->dm_segs[0].ds_addr + 1042 offsetof(struct xl_list_data, xl_tx_list[i]); 1043 cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[next]; 1044 cd->xl_tx_chain[i].xl_prev = &cd->xl_tx_chain[prev]; 1045 } 1046 1047 bzero((char *)ld->xl_tx_list, sizeof(struct xl_list) * XL_TX_LIST_CNT); 1048 ld->xl_tx_list[0].xl_status = htole32(XL_TXSTAT_EMPTY); 1049 1050 cd->xl_tx_prod = 1; 1051 cd->xl_tx_cons = 1; 1052 cd->xl_tx_cnt = 0; 1053 1054 return (0); 1055 } 1056 1057 /* 1058 * Initialize the RX descriptors and allocate mbufs for them. Note that 1059 * we arrange the descriptors in a closed ring, so that the last descriptor 1060 * points back to the first. 1061 */ 1062 int 1063 xl_list_rx_init(struct xl_softc *sc) 1064 { 1065 struct xl_chain_data *cd; 1066 struct xl_list_data *ld; 1067 int i, n; 1068 bus_addr_t next; 1069 1070 cd = &sc->xl_cdata; 1071 ld = sc->xl_ldata; 1072 1073 for (i = 0; i < XL_RX_LIST_CNT; i++) { 1074 cd->xl_rx_chain[i].xl_ptr = 1075 (struct xl_list_onefrag *)&ld->xl_rx_list[i]; 1076 if (xl_newbuf(sc, &cd->xl_rx_chain[i]) == ENOBUFS) 1077 return(ENOBUFS); 1078 if (i == (XL_RX_LIST_CNT - 1)) 1079 n = 0; 1080 else 1081 n = i + 1; 1082 cd->xl_rx_chain[i].xl_next = &cd->xl_rx_chain[n]; 1083 next = sc->sc_listmap->dm_segs[0].ds_addr + 1084 offsetof(struct xl_list_data, xl_rx_list[n]); 1085 ld->xl_rx_list[i].xl_next = htole32(next); 1086 } 1087 1088 cd->xl_rx_head = &cd->xl_rx_chain[0]; 1089 1090 return (0); 1091 } 1092 1093 /* 1094 * Initialize an RX descriptor and attach an MBUF cluster. 1095 */ 1096 int 1097 xl_newbuf(struct xl_softc *sc, struct xl_chain_onefrag *c) 1098 { 1099 struct mbuf *m_new = NULL; 1100 bus_dmamap_t map; 1101 1102 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1103 if (m_new == NULL) 1104 return (ENOBUFS); 1105 1106 MCLGET(m_new, M_DONTWAIT); 1107 if (!(m_new->m_flags & M_EXT)) { 1108 m_freem(m_new); 1109 return (ENOBUFS); 1110 } 1111 1112 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 1113 if (bus_dmamap_load(sc->sc_dmat, sc->sc_rx_sparemap, 1114 mtod(m_new, caddr_t), MCLBYTES, NULL, BUS_DMA_NOWAIT) != 0) { 1115 m_freem(m_new); 1116 return (ENOBUFS); 1117 } 1118 1119 /* sync the old map, and unload it (if necessary) */ 1120 if (c->map->dm_nsegs != 0) { 1121 bus_dmamap_sync(sc->sc_dmat, c->map, 1122 0, c->map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1123 bus_dmamap_unload(sc->sc_dmat, c->map); 1124 } 1125 1126 map = c->map; 1127 c->map = sc->sc_rx_sparemap; 1128 sc->sc_rx_sparemap = map; 1129 1130 /* Force longword alignment for packet payload. */ 1131 m_adj(m_new, ETHER_ALIGN); 1132 1133 bus_dmamap_sync(sc->sc_dmat, c->map, 0, c->map->dm_mapsize, 1134 BUS_DMASYNC_PREREAD); 1135 1136 c->xl_mbuf = m_new; 1137 c->xl_ptr->xl_frag.xl_addr = 1138 htole32(c->map->dm_segs[0].ds_addr + ETHER_ALIGN); 1139 c->xl_ptr->xl_frag.xl_len = 1140 htole32(c->map->dm_segs[0].ds_len | XL_LAST_FRAG); 1141 c->xl_ptr->xl_status = htole32(0); 1142 1143 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap, 1144 ((caddr_t)c->xl_ptr - sc->sc_listkva), sizeof(struct xl_list), 1145 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1146 1147 return (0); 1148 } 1149 1150 int 1151 xl_rx_resync(struct xl_softc *sc) 1152 { 1153 struct xl_chain_onefrag *pos; 1154 int i; 1155 1156 pos = sc->xl_cdata.xl_rx_head; 1157 1158 for (i = 0; i < XL_RX_LIST_CNT; i++) { 1159 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap, 1160 ((caddr_t)pos->xl_ptr - sc->sc_listkva), 1161 sizeof(struct xl_list), 1162 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1163 1164 if (pos->xl_ptr->xl_status) 1165 break; 1166 pos = pos->xl_next; 1167 } 1168 1169 if (i == XL_RX_LIST_CNT) 1170 return (0); 1171 1172 sc->xl_cdata.xl_rx_head = pos; 1173 1174 return (EAGAIN); 1175 } 1176 1177 /* 1178 * A frame has been uploaded: pass the resulting mbuf chain up to 1179 * the higher level protocols. 1180 */ 1181 void 1182 xl_rxeof(struct xl_softc *sc) 1183 { 1184 struct mbuf *m; 1185 struct ifnet *ifp; 1186 struct xl_chain_onefrag *cur_rx; 1187 int total_len = 0; 1188 u_int32_t rxstat; 1189 u_int16_t sumflags = 0; 1190 1191 ifp = &sc->sc_arpcom.ac_if; 1192 1193 again: 1194 1195 while ((rxstat = letoh32(sc->xl_cdata.xl_rx_head->xl_ptr->xl_status)) 1196 != 0) { 1197 cur_rx = sc->xl_cdata.xl_rx_head; 1198 sc->xl_cdata.xl_rx_head = cur_rx->xl_next; 1199 total_len = rxstat & XL_RXSTAT_LENMASK; 1200 1201 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap, 1202 ((caddr_t)cur_rx->xl_ptr - sc->sc_listkva), 1203 sizeof(struct xl_list), 1204 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1205 1206 /* 1207 * Since we have told the chip to allow large frames, 1208 * we need to trap giant frame errors in software. We allow 1209 * a little more than the normal frame size to account for 1210 * frames with VLAN tags. 1211 */ 1212 if (total_len > XL_MAX_FRAMELEN) 1213 rxstat |= (XL_RXSTAT_UP_ERROR|XL_RXSTAT_OVERSIZE); 1214 1215 /* 1216 * If an error occurs, update stats, clear the 1217 * status word and leave the mbuf cluster in place: 1218 * it should simply get re-used next time this descriptor 1219 * comes up in the ring. 1220 */ 1221 if (rxstat & XL_RXSTAT_UP_ERROR) { 1222 ifp->if_ierrors++; 1223 cur_rx->xl_ptr->xl_status = htole32(0); 1224 continue; 1225 } 1226 1227 /* 1228 * If the error bit was not set, the upload complete 1229 * bit should be set which means we have a valid packet. 1230 * If not, something truly strange has happened. 1231 */ 1232 if (!(rxstat & XL_RXSTAT_UP_CMPLT)) { 1233 printf("%s: bad receive status -- " 1234 "packet dropped\n", sc->sc_dev.dv_xname); 1235 ifp->if_ierrors++; 1236 cur_rx->xl_ptr->xl_status = htole32(0); 1237 continue; 1238 } 1239 1240 /* No errors; receive the packet. */ 1241 m = cur_rx->xl_mbuf; 1242 1243 /* 1244 * Try to conjure up a new mbuf cluster. If that 1245 * fails, it means we have an out of memory condition and 1246 * should leave the buffer in place and continue. This will 1247 * result in a lost packet, but there's little else we 1248 * can do in this situation. 1249 */ 1250 if (xl_newbuf(sc, cur_rx) == ENOBUFS) { 1251 ifp->if_ierrors++; 1252 cur_rx->xl_ptr->xl_status = htole32(0); 1253 continue; 1254 } 1255 1256 ifp->if_ipackets++; 1257 m->m_pkthdr.rcvif = ifp; 1258 m->m_pkthdr.len = m->m_len = total_len; 1259 #if NBPFILTER > 0 1260 /* 1261 * Handle BPF listeners. Let the BPF user see the packet. 1262 */ 1263 if (ifp->if_bpf) { 1264 bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN); 1265 } 1266 #endif 1267 1268 if (sc->xl_type == XL_TYPE_905B) { 1269 if (!(rxstat & XL_RXSTAT_IPCKERR) && 1270 (rxstat & XL_RXSTAT_IPCKOK)) 1271 sumflags |= M_IPV4_CSUM_IN_OK; 1272 1273 if (!(rxstat & XL_RXSTAT_TCPCKERR) && 1274 (rxstat & XL_RXSTAT_TCPCKOK)) 1275 sumflags |= M_TCP_CSUM_IN_OK; 1276 1277 if (!(rxstat & XL_RXSTAT_UDPCKERR) && 1278 (rxstat & XL_RXSTAT_UDPCKOK)) 1279 sumflags |= M_UDP_CSUM_IN_OK; 1280 1281 m->m_pkthdr.csum_flags = sumflags; 1282 } 1283 1284 ether_input_mbuf(ifp, m); 1285 } 1286 1287 /* 1288 * Handle the 'end of channel' condition. When the upload 1289 * engine hits the end of the RX ring, it will stall. This 1290 * is our cue to flush the RX ring, reload the uplist pointer 1291 * register and unstall the engine. 1292 * XXX This is actually a little goofy. With the ThunderLAN 1293 * chip, you get an interrupt when the receiver hits the end 1294 * of the receive ring, which tells you exactly when you 1295 * you need to reload the ring pointer. Here we have to 1296 * fake it. I'm mad at myself for not being clever enough 1297 * to avoid the use of a goto here. 1298 */ 1299 if (CSR_READ_4(sc, XL_UPLIST_PTR) == 0 || 1300 CSR_READ_4(sc, XL_UPLIST_STATUS) & XL_PKTSTAT_UP_STALLED) { 1301 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_STALL); 1302 xl_wait(sc); 1303 CSR_WRITE_4(sc, XL_UPLIST_PTR, 1304 sc->sc_listmap->dm_segs[0].ds_addr + 1305 offsetof(struct xl_list_data, xl_rx_list[0])); 1306 sc->xl_cdata.xl_rx_head = &sc->xl_cdata.xl_rx_chain[0]; 1307 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_UNSTALL); 1308 goto again; 1309 } 1310 } 1311 1312 /* 1313 * A frame was downloaded to the chip. It's safe for us to clean up 1314 * the list buffers. 1315 */ 1316 void 1317 xl_txeof(struct xl_softc *sc) 1318 { 1319 struct xl_chain *cur_tx; 1320 struct ifnet *ifp; 1321 1322 ifp = &sc->sc_arpcom.ac_if; 1323 1324 /* 1325 * Go through our tx list and free mbufs for those 1326 * frames that have been uploaded. Note: the 3c905B 1327 * sets a special bit in the status word to let us 1328 * know that a frame has been downloaded, but the 1329 * original 3c900/3c905 adapters don't do that. 1330 * Consequently, we have to use a different test if 1331 * xl_type != XL_TYPE_905B. 1332 */ 1333 while (sc->xl_cdata.xl_tx_head != NULL) { 1334 cur_tx = sc->xl_cdata.xl_tx_head; 1335 1336 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap, 1337 ((caddr_t)cur_tx->xl_ptr - sc->sc_listkva), 1338 sizeof(struct xl_list), 1339 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1340 1341 if (CSR_READ_4(sc, XL_DOWNLIST_PTR)) 1342 break; 1343 1344 sc->xl_cdata.xl_tx_head = cur_tx->xl_next; 1345 ifp->if_opackets++; 1346 if (cur_tx->map->dm_nsegs != 0) { 1347 bus_dmamap_t map = cur_tx->map; 1348 1349 bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, 1350 BUS_DMASYNC_POSTWRITE); 1351 bus_dmamap_unload(sc->sc_dmat, map); 1352 } 1353 if (cur_tx->xl_mbuf != NULL) { 1354 m_freem(cur_tx->xl_mbuf); 1355 cur_tx->xl_mbuf = NULL; 1356 } 1357 cur_tx->xl_next = sc->xl_cdata.xl_tx_free; 1358 sc->xl_cdata.xl_tx_free = cur_tx; 1359 } 1360 1361 if (sc->xl_cdata.xl_tx_head == NULL) { 1362 ifp->if_flags &= ~IFF_OACTIVE; 1363 /* Clear the timeout timer. */ 1364 ifp->if_timer = 0; 1365 sc->xl_cdata.xl_tx_tail = NULL; 1366 } else { 1367 if (CSR_READ_4(sc, XL_DMACTL) & XL_DMACTL_DOWN_STALLED || 1368 !CSR_READ_4(sc, XL_DOWNLIST_PTR)) { 1369 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 1370 sc->sc_listmap->dm_segs[0].ds_addr + 1371 ((caddr_t)sc->xl_cdata.xl_tx_head->xl_ptr - 1372 sc->sc_listkva)); 1373 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 1374 } 1375 } 1376 } 1377 1378 void 1379 xl_txeof_90xB(struct xl_softc *sc) 1380 { 1381 struct xl_chain *cur_tx = NULL; 1382 struct ifnet *ifp; 1383 int idx; 1384 1385 ifp = &sc->sc_arpcom.ac_if; 1386 1387 idx = sc->xl_cdata.xl_tx_cons; 1388 while (idx != sc->xl_cdata.xl_tx_prod) { 1389 1390 cur_tx = &sc->xl_cdata.xl_tx_chain[idx]; 1391 1392 if ((cur_tx->xl_ptr->xl_status & 1393 htole32(XL_TXSTAT_DL_COMPLETE)) == 0) 1394 break; 1395 1396 if (cur_tx->xl_mbuf != NULL) { 1397 m_freem(cur_tx->xl_mbuf); 1398 cur_tx->xl_mbuf = NULL; 1399 } 1400 1401 if (cur_tx->map->dm_nsegs != 0) { 1402 bus_dmamap_sync(sc->sc_dmat, cur_tx->map, 1403 0, cur_tx->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1404 bus_dmamap_unload(sc->sc_dmat, cur_tx->map); 1405 } 1406 1407 ifp->if_opackets++; 1408 1409 sc->xl_cdata.xl_tx_cnt--; 1410 XL_INC(idx, XL_TX_LIST_CNT); 1411 } 1412 1413 sc->xl_cdata.xl_tx_cons = idx; 1414 1415 if (cur_tx != NULL) 1416 ifp->if_flags &= ~IFF_OACTIVE; 1417 if (sc->xl_cdata.xl_tx_cnt == 0) 1418 ifp->if_timer = 0; 1419 } 1420 1421 /* 1422 * TX 'end of channel' interrupt handler. Actually, we should 1423 * only get a 'TX complete' interrupt if there's a transmit error, 1424 * so this is really TX error handler. 1425 */ 1426 void 1427 xl_txeoc(struct xl_softc *sc) 1428 { 1429 u_int8_t txstat; 1430 1431 while ((txstat = CSR_READ_1(sc, XL_TX_STATUS))) { 1432 if (txstat & XL_TXSTATUS_UNDERRUN || 1433 txstat & XL_TXSTATUS_JABBER || 1434 txstat & XL_TXSTATUS_RECLAIM) { 1435 if (txstat != 0x90) { 1436 printf("%s: transmission error: %x\n", 1437 sc->sc_dev.dv_xname, txstat); 1438 } 1439 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 1440 xl_wait(sc); 1441 if (sc->xl_type == XL_TYPE_905B) { 1442 if (sc->xl_cdata.xl_tx_cnt) { 1443 int i; 1444 struct xl_chain *c; 1445 1446 i = sc->xl_cdata.xl_tx_cons; 1447 c = &sc->xl_cdata.xl_tx_chain[i]; 1448 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 1449 c->xl_phys); 1450 CSR_WRITE_1(sc, XL_DOWN_POLL, 64); 1451 } 1452 } else { 1453 if (sc->xl_cdata.xl_tx_head != NULL) 1454 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 1455 sc->sc_listmap->dm_segs[0].ds_addr + 1456 ((caddr_t)sc->xl_cdata.xl_tx_head->xl_ptr - 1457 sc->sc_listkva)); 1458 } 1459 /* 1460 * Remember to set this for the 1461 * first generation 3c90X chips. 1462 */ 1463 CSR_WRITE_1(sc, XL_TX_FREETHRESH, XL_PACKET_SIZE >> 8); 1464 if (txstat & XL_TXSTATUS_UNDERRUN && 1465 sc->xl_tx_thresh < XL_PACKET_SIZE) { 1466 sc->xl_tx_thresh += XL_MIN_FRAMELEN; 1467 #ifdef notdef 1468 printf("%s: tx underrun, increasing tx start" 1469 " threshold to %d\n", sc->sc_dev.dv_xname, 1470 sc->xl_tx_thresh); 1471 #endif 1472 } 1473 CSR_WRITE_2(sc, XL_COMMAND, 1474 XL_CMD_TX_SET_START|sc->xl_tx_thresh); 1475 if (sc->xl_type == XL_TYPE_905B) { 1476 CSR_WRITE_2(sc, XL_COMMAND, 1477 XL_CMD_SET_TX_RECLAIM|(XL_PACKET_SIZE >> 4)); 1478 } 1479 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); 1480 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 1481 } else { 1482 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); 1483 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 1484 } 1485 /* 1486 * Write an arbitrary byte to the TX_STATUS register 1487 * to clear this interrupt/error and advance to the next. 1488 */ 1489 CSR_WRITE_1(sc, XL_TX_STATUS, 0x01); 1490 } 1491 } 1492 1493 int 1494 xl_intr(void *arg) 1495 { 1496 struct xl_softc *sc; 1497 struct ifnet *ifp; 1498 u_int16_t status; 1499 int claimed = 0; 1500 1501 sc = arg; 1502 ifp = &sc->sc_arpcom.ac_if; 1503 1504 while ((status = CSR_READ_2(sc, XL_STATUS)) & XL_INTRS && status != 0xFFFF) { 1505 1506 claimed = 1; 1507 1508 CSR_WRITE_2(sc, XL_COMMAND, 1509 XL_CMD_INTR_ACK|(status & XL_INTRS)); 1510 1511 if (sc->intr_ack) 1512 (*sc->intr_ack)(sc); 1513 1514 if (status & XL_STAT_UP_COMPLETE) { 1515 int curpkts; 1516 1517 curpkts = ifp->if_ipackets; 1518 xl_rxeof(sc); 1519 if (curpkts == ifp->if_ipackets) { 1520 while (xl_rx_resync(sc)) 1521 xl_rxeof(sc); 1522 } 1523 } 1524 1525 if (status & XL_STAT_DOWN_COMPLETE) { 1526 if (sc->xl_type == XL_TYPE_905B) 1527 xl_txeof_90xB(sc); 1528 else 1529 xl_txeof(sc); 1530 } 1531 1532 if (status & XL_STAT_TX_COMPLETE) { 1533 ifp->if_oerrors++; 1534 xl_txeoc(sc); 1535 } 1536 1537 if (status & XL_STAT_ADFAIL) { 1538 xl_reset(sc); 1539 xl_init(sc); 1540 } 1541 1542 if (status & XL_STAT_STATSOFLOW) { 1543 sc->xl_stats_no_timeout = 1; 1544 xl_stats_update(sc); 1545 sc->xl_stats_no_timeout = 0; 1546 } 1547 } 1548 1549 if (!IFQ_IS_EMPTY(&ifp->if_snd)) 1550 (*ifp->if_start)(ifp); 1551 1552 return (claimed); 1553 } 1554 1555 void 1556 xl_stats_update(void *xsc) 1557 { 1558 struct xl_softc *sc; 1559 struct ifnet *ifp; 1560 struct xl_stats xl_stats; 1561 u_int8_t *p; 1562 int i; 1563 struct mii_data *mii = NULL; 1564 1565 bzero((char *)&xl_stats, sizeof(struct xl_stats)); 1566 1567 sc = xsc; 1568 ifp = &sc->sc_arpcom.ac_if; 1569 if (sc->xl_hasmii) 1570 mii = &sc->sc_mii; 1571 1572 p = (u_int8_t *)&xl_stats; 1573 1574 /* Read all the stats registers. */ 1575 XL_SEL_WIN(6); 1576 1577 for (i = 0; i < 16; i++) 1578 *p++ = CSR_READ_1(sc, XL_W6_CARRIER_LOST + i); 1579 1580 ifp->if_ierrors += xl_stats.xl_rx_overrun; 1581 1582 ifp->if_collisions += xl_stats.xl_tx_multi_collision + 1583 xl_stats.xl_tx_single_collision + 1584 xl_stats.xl_tx_late_collision; 1585 1586 /* 1587 * Boomerang and cyclone chips have an extra stats counter 1588 * in window 4 (BadSSD). We have to read this too in order 1589 * to clear out all the stats registers and avoid a statsoflow 1590 * interrupt. 1591 */ 1592 XL_SEL_WIN(4); 1593 CSR_READ_1(sc, XL_W4_BADSSD); 1594 1595 if (mii != NULL && (!sc->xl_stats_no_timeout)) 1596 mii_tick(mii); 1597 1598 XL_SEL_WIN(7); 1599 1600 if (!sc->xl_stats_no_timeout) 1601 timeout_add_sec(&sc->xl_stsup_tmo, 1); 1602 } 1603 1604 /* 1605 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1606 * pointers to the fragment pointers. 1607 */ 1608 int 1609 xl_encap(struct xl_softc *sc, struct xl_chain *c, struct mbuf *m_head) 1610 { 1611 int error, frag, total_len; 1612 u_int32_t status; 1613 bus_dmamap_t map; 1614 1615 map = sc->sc_tx_sparemap; 1616 1617 reload: 1618 error = bus_dmamap_load_mbuf(sc->sc_dmat, map, 1619 m_head, BUS_DMA_NOWAIT); 1620 1621 if (error && error != EFBIG) { 1622 m_freem(m_head); 1623 return (1); 1624 } 1625 1626 /* 1627 * Start packing the mbufs in this chain into 1628 * the fragment pointers. Stop when we run out 1629 * of fragments or hit the end of the mbuf chain. 1630 */ 1631 for (frag = 0, total_len = 0; frag < map->dm_nsegs; frag++) { 1632 if (frag == XL_MAXFRAGS) 1633 break; 1634 total_len += map->dm_segs[frag].ds_len; 1635 c->xl_ptr->xl_frag[frag].xl_addr = 1636 htole32(map->dm_segs[frag].ds_addr); 1637 c->xl_ptr->xl_frag[frag].xl_len = 1638 htole32(map->dm_segs[frag].ds_len); 1639 } 1640 1641 /* 1642 * Handle special case: we used up all 63 fragments, 1643 * but we have more mbufs left in the chain. Copy the 1644 * data into an mbuf cluster. Note that we don't 1645 * bother clearing the values in the other fragment 1646 * pointers/counters; it wouldn't gain us anything, 1647 * and would waste cycles. 1648 */ 1649 if (error) { 1650 struct mbuf *m_new = NULL; 1651 1652 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1653 if (m_new == NULL) { 1654 m_freem(m_head); 1655 return (1); 1656 } 1657 if (m_head->m_pkthdr.len > MHLEN) { 1658 MCLGET(m_new, M_DONTWAIT); 1659 if (!(m_new->m_flags & M_EXT)) { 1660 m_freem(m_new); 1661 m_freem(m_head); 1662 return (1); 1663 } 1664 } 1665 m_copydata(m_head, 0, m_head->m_pkthdr.len, 1666 mtod(m_new, caddr_t)); 1667 m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len; 1668 m_freem(m_head); 1669 m_head = m_new; 1670 goto reload; 1671 } 1672 1673 bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, 1674 BUS_DMASYNC_PREWRITE); 1675 1676 if (c->map->dm_nsegs != 0) { 1677 bus_dmamap_sync(sc->sc_dmat, c->map, 1678 0, c->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1679 bus_dmamap_unload(sc->sc_dmat, c->map); 1680 } 1681 1682 c->xl_mbuf = m_head; 1683 sc->sc_tx_sparemap = c->map; 1684 c->map = map; 1685 c->xl_ptr->xl_frag[frag - 1].xl_len |= htole32(XL_LAST_FRAG); 1686 c->xl_ptr->xl_status = htole32(total_len); 1687 c->xl_ptr->xl_next = 0; 1688 1689 if (sc->xl_type == XL_TYPE_905B) { 1690 status = XL_TXSTAT_RND_DEFEAT; 1691 1692 #ifndef XL905B_TXCSUM_BROKEN 1693 if (m_head->m_pkthdr.csum_flags) { 1694 if (m_head->m_pkthdr.csum_flags & M_IPV4_CSUM_OUT) 1695 status |= XL_TXSTAT_IPCKSUM; 1696 if (m_head->m_pkthdr.csum_flags & M_TCPV4_CSUM_OUT) 1697 status |= XL_TXSTAT_TCPCKSUM; 1698 if (m_head->m_pkthdr.csum_flags & M_UDPV4_CSUM_OUT) 1699 status |= XL_TXSTAT_UDPCKSUM; 1700 } 1701 #endif 1702 c->xl_ptr->xl_status = htole32(status); 1703 } 1704 1705 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap, 1706 offsetof(struct xl_list_data, xl_tx_list[0]), 1707 sizeof(struct xl_list) * XL_TX_LIST_CNT, 1708 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1709 1710 return (0); 1711 } 1712 1713 /* 1714 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1715 * to the mbuf data regions directly in the transmit lists. We also save a 1716 * copy of the pointers since the transmit list fragment pointers are 1717 * physical addresses. 1718 */ 1719 void 1720 xl_start(struct ifnet *ifp) 1721 { 1722 struct xl_softc *sc; 1723 struct mbuf *m_head = NULL; 1724 struct xl_chain *prev = NULL, *cur_tx = NULL, *start_tx; 1725 struct xl_chain *prev_tx; 1726 int error; 1727 1728 sc = ifp->if_softc; 1729 1730 /* 1731 * Check for an available queue slot. If there are none, 1732 * punt. 1733 */ 1734 if (sc->xl_cdata.xl_tx_free == NULL) { 1735 xl_txeoc(sc); 1736 xl_txeof(sc); 1737 if (sc->xl_cdata.xl_tx_free == NULL) { 1738 ifp->if_flags |= IFF_OACTIVE; 1739 return; 1740 } 1741 } 1742 1743 start_tx = sc->xl_cdata.xl_tx_free; 1744 1745 while (sc->xl_cdata.xl_tx_free != NULL) { 1746 IFQ_DEQUEUE(&ifp->if_snd, m_head); 1747 if (m_head == NULL) 1748 break; 1749 1750 /* Pick a descriptor off the free list. */ 1751 prev_tx = cur_tx; 1752 cur_tx = sc->xl_cdata.xl_tx_free; 1753 1754 /* Pack the data into the descriptor. */ 1755 error = xl_encap(sc, cur_tx, m_head); 1756 if (error) { 1757 cur_tx = prev_tx; 1758 continue; 1759 } 1760 1761 sc->xl_cdata.xl_tx_free = cur_tx->xl_next; 1762 cur_tx->xl_next = NULL; 1763 1764 /* Chain it together. */ 1765 if (prev != NULL) { 1766 prev->xl_next = cur_tx; 1767 prev->xl_ptr->xl_next = 1768 sc->sc_listmap->dm_segs[0].ds_addr + 1769 ((caddr_t)cur_tx->xl_ptr - sc->sc_listkva); 1770 1771 } 1772 prev = cur_tx; 1773 1774 #if NBPFILTER > 0 1775 /* 1776 * If there's a BPF listener, bounce a copy of this frame 1777 * to him. 1778 */ 1779 if (ifp->if_bpf) 1780 bpf_mtap(ifp->if_bpf, cur_tx->xl_mbuf, 1781 BPF_DIRECTION_OUT); 1782 #endif 1783 } 1784 1785 /* 1786 * If there are no packets queued, bail. 1787 */ 1788 if (cur_tx == NULL) 1789 return; 1790 1791 /* 1792 * Place the request for the upload interrupt 1793 * in the last descriptor in the chain. This way, if 1794 * we're chaining several packets at once, we'll only 1795 * get an interrupt once for the whole chain rather than 1796 * once for each packet. 1797 */ 1798 cur_tx->xl_ptr->xl_status |= htole32(XL_TXSTAT_DL_INTR); 1799 1800 /* 1801 * Queue the packets. If the TX channel is clear, update 1802 * the downlist pointer register. 1803 */ 1804 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_STALL); 1805 xl_wait(sc); 1806 1807 if (sc->xl_cdata.xl_tx_head != NULL) { 1808 sc->xl_cdata.xl_tx_tail->xl_next = start_tx; 1809 sc->xl_cdata.xl_tx_tail->xl_ptr->xl_next = 1810 sc->sc_listmap->dm_segs[0].ds_addr + 1811 ((caddr_t)start_tx->xl_ptr - sc->sc_listkva); 1812 sc->xl_cdata.xl_tx_tail->xl_ptr->xl_status &= 1813 htole32(~XL_TXSTAT_DL_INTR); 1814 sc->xl_cdata.xl_tx_tail = cur_tx; 1815 } else { 1816 sc->xl_cdata.xl_tx_head = start_tx; 1817 sc->xl_cdata.xl_tx_tail = cur_tx; 1818 } 1819 if (!CSR_READ_4(sc, XL_DOWNLIST_PTR)) 1820 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 1821 sc->sc_listmap->dm_segs[0].ds_addr + 1822 ((caddr_t)start_tx->xl_ptr - sc->sc_listkva)); 1823 1824 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 1825 1826 XL_SEL_WIN(7); 1827 1828 /* 1829 * Set a timeout in case the chip goes out to lunch. 1830 */ 1831 ifp->if_timer = 5; 1832 1833 /* 1834 * XXX Under certain conditions, usually on slower machines 1835 * where interrupts may be dropped, it's possible for the 1836 * adapter to chew up all the buffers in the receive ring 1837 * and stall, without us being able to do anything about it. 1838 * To guard against this, we need to make a pass over the 1839 * RX queue to make sure there aren't any packets pending. 1840 * Doing it here means we can flush the receive ring at the 1841 * same time the chip is DMAing the transmit descriptors we 1842 * just gave it. 1843 * 1844 * 3Com goes to some lengths to emphasize the Parallel Tasking (tm) 1845 * nature of their chips in all their marketing literature; 1846 * we may as well take advantage of it. :) 1847 */ 1848 xl_rxeof(sc); 1849 } 1850 1851 void 1852 xl_start_90xB(struct ifnet *ifp) 1853 { 1854 struct xl_softc *sc; 1855 struct mbuf *m_head = NULL; 1856 struct xl_chain *prev = NULL, *cur_tx = NULL, *start_tx; 1857 struct xl_chain *prev_tx; 1858 int error, idx; 1859 1860 sc = ifp->if_softc; 1861 1862 if (ifp->if_flags & IFF_OACTIVE) 1863 return; 1864 1865 idx = sc->xl_cdata.xl_tx_prod; 1866 start_tx = &sc->xl_cdata.xl_tx_chain[idx]; 1867 1868 while (sc->xl_cdata.xl_tx_chain[idx].xl_mbuf == NULL) { 1869 1870 if ((XL_TX_LIST_CNT - sc->xl_cdata.xl_tx_cnt) < 3) { 1871 ifp->if_flags |= IFF_OACTIVE; 1872 break; 1873 } 1874 1875 IFQ_DEQUEUE(&ifp->if_snd, m_head); 1876 if (m_head == NULL) 1877 break; 1878 1879 prev_tx = cur_tx; 1880 cur_tx = &sc->xl_cdata.xl_tx_chain[idx]; 1881 1882 /* Pack the data into the descriptor. */ 1883 error = xl_encap(sc, cur_tx, m_head); 1884 if (error) { 1885 cur_tx = prev_tx; 1886 continue; 1887 } 1888 1889 /* Chain it together. */ 1890 if (prev != NULL) 1891 prev->xl_ptr->xl_next = htole32(cur_tx->xl_phys); 1892 prev = cur_tx; 1893 1894 #if NBPFILTER > 0 1895 /* 1896 * If there's a BPF listener, bounce a copy of this frame 1897 * to him. 1898 */ 1899 if (ifp->if_bpf) 1900 bpf_mtap(ifp->if_bpf, cur_tx->xl_mbuf, 1901 BPF_DIRECTION_OUT); 1902 #endif 1903 1904 XL_INC(idx, XL_TX_LIST_CNT); 1905 sc->xl_cdata.xl_tx_cnt++; 1906 } 1907 1908 /* 1909 * If there are no packets queued, bail. 1910 */ 1911 if (cur_tx == NULL) 1912 return; 1913 1914 /* 1915 * Place the request for the upload interrupt 1916 * in the last descriptor in the chain. This way, if 1917 * we're chaining several packets at once, we'll only 1918 * get an interrupt once for the whole chain rather than 1919 * once for each packet. 1920 */ 1921 cur_tx->xl_ptr->xl_status |= htole32(XL_TXSTAT_DL_INTR); 1922 1923 /* Start transmission */ 1924 sc->xl_cdata.xl_tx_prod = idx; 1925 start_tx->xl_prev->xl_ptr->xl_next = htole32(start_tx->xl_phys); 1926 1927 /* 1928 * Set a timeout in case the chip goes out to lunch. 1929 */ 1930 ifp->if_timer = 5; 1931 } 1932 1933 void 1934 xl_init(void *xsc) 1935 { 1936 struct xl_softc *sc = xsc; 1937 struct ifnet *ifp = &sc->sc_arpcom.ac_if; 1938 int s, i; 1939 u_int16_t rxfilt = 0; 1940 struct mii_data *mii = NULL; 1941 1942 s = splnet(); 1943 1944 /* 1945 * Cancel pending I/O and free all RX/TX buffers. 1946 */ 1947 xl_stop(sc); 1948 1949 if (sc->xl_hasmii) 1950 mii = &sc->sc_mii; 1951 1952 if (mii == NULL) { 1953 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 1954 xl_wait(sc); 1955 } 1956 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 1957 xl_wait(sc); 1958 DELAY(10000); 1959 1960 /* Init our MAC address */ 1961 XL_SEL_WIN(2); 1962 for (i = 0; i < ETHER_ADDR_LEN; i++) { 1963 CSR_WRITE_1(sc, XL_W2_STATION_ADDR_LO + i, 1964 sc->sc_arpcom.ac_enaddr[i]); 1965 } 1966 1967 /* Clear the station mask. */ 1968 for (i = 0; i < 3; i++) 1969 CSR_WRITE_2(sc, XL_W2_STATION_MASK_LO + (i * 2), 0); 1970 #ifdef notdef 1971 /* Reset TX and RX. */ 1972 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 1973 xl_wait(sc); 1974 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 1975 xl_wait(sc); 1976 #endif 1977 /* Init circular RX list. */ 1978 if (xl_list_rx_init(sc) == ENOBUFS) { 1979 printf("%s: initialization failed: no " 1980 "memory for rx buffers\n", sc->sc_dev.dv_xname); 1981 xl_stop(sc); 1982 splx(s); 1983 return; 1984 } 1985 1986 /* Init TX descriptors. */ 1987 if (sc->xl_type == XL_TYPE_905B) 1988 xl_list_tx_init_90xB(sc); 1989 else 1990 xl_list_tx_init(sc); 1991 1992 /* 1993 * Set the TX freethresh value. 1994 * Note that this has no effect on 3c905B "cyclone" 1995 * cards but is required for 3c900/3c905 "boomerang" 1996 * cards in order to enable the download engine. 1997 */ 1998 CSR_WRITE_1(sc, XL_TX_FREETHRESH, XL_PACKET_SIZE >> 8); 1999 2000 /* Set the TX start threshold for best performance. */ 2001 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_SET_START|sc->xl_tx_thresh); 2002 2003 /* 2004 * If this is a 3c905B, also set the tx reclaim threshold. 2005 * This helps cut down on the number of tx reclaim errors 2006 * that could happen on a busy network. The chip multiplies 2007 * the register value by 16 to obtain the actual threshold 2008 * in bytes, so we divide by 16 when setting the value here. 2009 * The existing threshold value can be examined by reading 2010 * the register at offset 9 in window 5. 2011 */ 2012 if (sc->xl_type == XL_TYPE_905B) { 2013 CSR_WRITE_2(sc, XL_COMMAND, 2014 XL_CMD_SET_TX_RECLAIM|(XL_PACKET_SIZE >> 4)); 2015 } 2016 2017 /* Set RX filter bits. */ 2018 XL_SEL_WIN(5); 2019 rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); 2020 2021 /* Set the individual bit to receive frames for this host only. */ 2022 rxfilt |= XL_RXFILTER_INDIVIDUAL; 2023 2024 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); 2025 2026 /* Set promiscuous mode. */ 2027 xl_setpromisc(sc); 2028 2029 rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); 2030 2031 /* 2032 * Set capture broadcast bit to capture broadcast frames. 2033 */ 2034 if (ifp->if_flags & IFF_BROADCAST) 2035 rxfilt |= XL_RXFILTER_BROADCAST; 2036 else 2037 rxfilt &= ~XL_RXFILTER_BROADCAST; 2038 2039 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); 2040 2041 /* 2042 * Program the multicast filter, if necessary. 2043 */ 2044 if (sc->xl_type == XL_TYPE_905B) 2045 xl_setmulti_hash(sc); 2046 else 2047 xl_setmulti(sc); 2048 2049 /* 2050 * Load the address of the RX list. We have to 2051 * stall the upload engine before we can manipulate 2052 * the uplist pointer register, then unstall it when 2053 * we're finished. We also have to wait for the 2054 * stall command to complete before proceeding. 2055 * Note that we have to do this after any RX resets 2056 * have completed since the uplist register is cleared 2057 * by a reset. 2058 */ 2059 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_STALL); 2060 xl_wait(sc); 2061 CSR_WRITE_4(sc, XL_UPLIST_PTR, sc->sc_listmap->dm_segs[0].ds_addr + 2062 offsetof(struct xl_list_data, xl_rx_list[0])); 2063 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_UNSTALL); 2064 xl_wait(sc); 2065 2066 if (sc->xl_type == XL_TYPE_905B) { 2067 /* Set polling interval */ 2068 CSR_WRITE_1(sc, XL_DOWN_POLL, 64); 2069 /* Load the address of the TX list */ 2070 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_STALL); 2071 xl_wait(sc); 2072 CSR_WRITE_4(sc, XL_DOWNLIST_PTR, 2073 sc->sc_listmap->dm_segs[0].ds_addr + 2074 offsetof(struct xl_list_data, xl_tx_list[0])); 2075 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); 2076 xl_wait(sc); 2077 } 2078 2079 /* 2080 * If the coax transceiver is on, make sure to enable 2081 * the DC-DC converter. 2082 */ 2083 XL_SEL_WIN(3); 2084 if (sc->xl_xcvr == XL_XCVR_COAX) 2085 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_START); 2086 else 2087 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 2088 2089 /* 2090 * increase packet size to allow reception of 802.1q or ISL packets. 2091 * For the 3c90x chip, set the 'allow large packets' bit in the MAC 2092 * control register. For 3c90xB/C chips, use the RX packet size 2093 * register. 2094 */ 2095 2096 if (sc->xl_type == XL_TYPE_905B) 2097 CSR_WRITE_2(sc, XL_W3_MAXPKTSIZE, XL_PACKET_SIZE); 2098 else { 2099 u_int8_t macctl; 2100 macctl = CSR_READ_1(sc, XL_W3_MAC_CTRL); 2101 macctl |= XL_MACCTRL_ALLOW_LARGE_PACK; 2102 CSR_WRITE_1(sc, XL_W3_MAC_CTRL, macctl); 2103 } 2104 2105 /* Clear out the stats counters. */ 2106 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_DISABLE); 2107 sc->xl_stats_no_timeout = 1; 2108 xl_stats_update(sc); 2109 sc->xl_stats_no_timeout = 0; 2110 XL_SEL_WIN(4); 2111 CSR_WRITE_2(sc, XL_W4_NET_DIAG, XL_NETDIAG_UPPER_BYTES_ENABLE); 2112 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_ENABLE); 2113 2114 /* 2115 * Enable interrupts. 2116 */ 2117 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|0xFF); 2118 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STAT_ENB|XL_INTRS); 2119 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|XL_INTRS); 2120 2121 if (sc->intr_ack) 2122 (*sc->intr_ack)(sc); 2123 2124 /* Set the RX early threshold */ 2125 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_THRESH|(XL_PACKET_SIZE >>2)); 2126 CSR_WRITE_2(sc, XL_DMACTL, XL_DMACTL_UP_RX_EARLY); 2127 2128 /* Enable receiver and transmitter. */ 2129 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); 2130 xl_wait(sc); 2131 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_ENABLE); 2132 xl_wait(sc); 2133 2134 /* Restore state of BMCR */ 2135 if (mii != NULL) 2136 mii_mediachg(mii); 2137 2138 /* Select window 7 for normal operations. */ 2139 XL_SEL_WIN(7); 2140 2141 ifp->if_flags |= IFF_RUNNING; 2142 ifp->if_flags &= ~IFF_OACTIVE; 2143 2144 splx(s); 2145 2146 timeout_add_sec(&sc->xl_stsup_tmo, 1); 2147 } 2148 2149 /* 2150 * Set media options. 2151 */ 2152 int 2153 xl_ifmedia_upd(struct ifnet *ifp) 2154 { 2155 struct xl_softc *sc; 2156 struct ifmedia *ifm = NULL; 2157 struct mii_data *mii = NULL; 2158 2159 sc = ifp->if_softc; 2160 2161 if (sc->xl_hasmii) 2162 mii = &sc->sc_mii; 2163 if (mii == NULL) 2164 ifm = &sc->ifmedia; 2165 else 2166 ifm = &mii->mii_media; 2167 2168 switch(IFM_SUBTYPE(ifm->ifm_media)) { 2169 case IFM_100_FX: 2170 case IFM_10_FL: 2171 case IFM_10_2: 2172 case IFM_10_5: 2173 xl_setmode(sc, ifm->ifm_media); 2174 return (0); 2175 break; 2176 default: 2177 break; 2178 } 2179 2180 if (sc->xl_media & XL_MEDIAOPT_MII || sc->xl_media & XL_MEDIAOPT_BTX 2181 || sc->xl_media & XL_MEDIAOPT_BT4) { 2182 xl_init(sc); 2183 } else { 2184 xl_setmode(sc, ifm->ifm_media); 2185 } 2186 2187 return (0); 2188 } 2189 2190 /* 2191 * Report current media status. 2192 */ 2193 void 2194 xl_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 2195 { 2196 struct xl_softc *sc; 2197 u_int32_t icfg; 2198 u_int16_t status = 0; 2199 struct mii_data *mii = NULL; 2200 2201 sc = ifp->if_softc; 2202 if (sc->xl_hasmii != 0) 2203 mii = &sc->sc_mii; 2204 2205 XL_SEL_WIN(4); 2206 status = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); 2207 2208 XL_SEL_WIN(3); 2209 icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG) & XL_ICFG_CONNECTOR_MASK; 2210 icfg >>= XL_ICFG_CONNECTOR_BITS; 2211 2212 ifmr->ifm_active = IFM_ETHER; 2213 ifmr->ifm_status = IFM_AVALID; 2214 2215 if ((status & XL_MEDIASTAT_CARRIER) == 0) 2216 ifmr->ifm_status |= IFM_ACTIVE; 2217 2218 switch(icfg) { 2219 case XL_XCVR_10BT: 2220 ifmr->ifm_active = IFM_ETHER|IFM_10_T; 2221 if (CSR_READ_1(sc, XL_W3_MAC_CTRL) & XL_MACCTRL_DUPLEX) 2222 ifmr->ifm_active |= IFM_FDX; 2223 else 2224 ifmr->ifm_active |= IFM_HDX; 2225 break; 2226 case XL_XCVR_AUI: 2227 if (sc->xl_type == XL_TYPE_905B && 2228 sc->xl_media == XL_MEDIAOPT_10FL) { 2229 ifmr->ifm_active = IFM_ETHER|IFM_10_FL; 2230 if (CSR_READ_1(sc, XL_W3_MAC_CTRL) & XL_MACCTRL_DUPLEX) 2231 ifmr->ifm_active |= IFM_FDX; 2232 else 2233 ifmr->ifm_active |= IFM_HDX; 2234 } else 2235 ifmr->ifm_active = IFM_ETHER|IFM_10_5; 2236 break; 2237 case XL_XCVR_COAX: 2238 ifmr->ifm_active = IFM_ETHER|IFM_10_2; 2239 break; 2240 /* 2241 * XXX MII and BTX/AUTO should be separate cases. 2242 */ 2243 2244 case XL_XCVR_100BTX: 2245 case XL_XCVR_AUTO: 2246 case XL_XCVR_MII: 2247 if (mii != NULL) { 2248 mii_pollstat(mii); 2249 ifmr->ifm_active = mii->mii_media_active; 2250 ifmr->ifm_status = mii->mii_media_status; 2251 } 2252 break; 2253 case XL_XCVR_100BFX: 2254 ifmr->ifm_active = IFM_ETHER|IFM_100_FX; 2255 break; 2256 default: 2257 printf("%s: unknown XCVR type: %d\n", sc->sc_dev.dv_xname, icfg); 2258 break; 2259 } 2260 } 2261 2262 int 2263 xl_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 2264 { 2265 struct xl_softc *sc = ifp->if_softc; 2266 struct ifreq *ifr = (struct ifreq *)data; 2267 struct ifaddr *ifa = (struct ifaddr *)data; 2268 int s, error = 0; 2269 struct mii_data *mii = NULL; 2270 2271 s = splnet(); 2272 2273 switch(command) { 2274 case SIOCSIFADDR: 2275 ifp->if_flags |= IFF_UP; 2276 if (!(ifp->if_flags & IFF_RUNNING)) 2277 xl_init(sc); 2278 #ifdef INET 2279 if (ifa->ifa_addr->sa_family == AF_INET) 2280 arp_ifinit(&sc->sc_arpcom, ifa); 2281 #endif /* INET */ 2282 break; 2283 2284 case SIOCSIFFLAGS: 2285 XL_SEL_WIN(5); 2286 if (ifp->if_flags & IFF_UP) { 2287 if (ifp->if_flags & IFF_RUNNING && 2288 (ifp->if_flags ^ sc->xl_if_flags) & 2289 IFF_PROMISC) { 2290 xl_setpromisc(sc); 2291 XL_SEL_WIN(7); 2292 } else { 2293 if (!(ifp->if_flags & IFF_RUNNING)) 2294 xl_init(sc); 2295 } 2296 } else { 2297 if (ifp->if_flags & IFF_RUNNING) 2298 xl_stop(sc); 2299 } 2300 sc->xl_if_flags = ifp->if_flags; 2301 break; 2302 case SIOCGIFMEDIA: 2303 case SIOCSIFMEDIA: 2304 if (sc->xl_hasmii != 0) 2305 mii = &sc->sc_mii; 2306 if (mii == NULL) 2307 error = ifmedia_ioctl(ifp, ifr, 2308 &sc->ifmedia, command); 2309 else 2310 error = ifmedia_ioctl(ifp, ifr, 2311 &mii->mii_media, command); 2312 break; 2313 default: 2314 error = ether_ioctl(ifp, &sc->sc_arpcom, command, data); 2315 } 2316 2317 if (error == ENETRESET) { 2318 if (ifp->if_flags & IFF_RUNNING) { 2319 if (sc->xl_type == XL_TYPE_905B) 2320 xl_setmulti_hash(sc); 2321 else 2322 xl_setmulti(sc); 2323 } 2324 error = 0; 2325 } 2326 2327 splx(s); 2328 return (error); 2329 } 2330 2331 void 2332 xl_watchdog(struct ifnet *ifp) 2333 { 2334 struct xl_softc *sc; 2335 u_int16_t status = 0; 2336 2337 sc = ifp->if_softc; 2338 2339 ifp->if_oerrors++; 2340 XL_SEL_WIN(4); 2341 status = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); 2342 printf("%s: watchdog timeout\n", sc->sc_dev.dv_xname); 2343 2344 if (status & XL_MEDIASTAT_CARRIER) 2345 printf("%s: no carrier - transceiver cable problem?\n", 2346 sc->sc_dev.dv_xname); 2347 xl_txeoc(sc); 2348 xl_txeof(sc); 2349 xl_rxeof(sc); 2350 xl_reset(sc); 2351 xl_init(sc); 2352 2353 if (!IFQ_IS_EMPTY(&ifp->if_snd)) 2354 (*ifp->if_start)(ifp); 2355 } 2356 2357 void 2358 xl_freetxrx(struct xl_softc *sc) 2359 { 2360 bus_dmamap_t map; 2361 int i; 2362 2363 /* 2364 * Free data in the RX lists. 2365 */ 2366 for (i = 0; i < XL_RX_LIST_CNT; i++) { 2367 if (sc->xl_cdata.xl_rx_chain[i].map->dm_nsegs != 0) { 2368 map = sc->xl_cdata.xl_rx_chain[i].map; 2369 2370 bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, 2371 BUS_DMASYNC_POSTREAD); 2372 bus_dmamap_unload(sc->sc_dmat, map); 2373 } 2374 if (sc->xl_cdata.xl_rx_chain[i].xl_mbuf != NULL) { 2375 m_freem(sc->xl_cdata.xl_rx_chain[i].xl_mbuf); 2376 sc->xl_cdata.xl_rx_chain[i].xl_mbuf = NULL; 2377 } 2378 } 2379 bzero((char *)&sc->xl_ldata->xl_rx_list, 2380 sizeof(sc->xl_ldata->xl_rx_list)); 2381 /* 2382 * Free the TX list buffers. 2383 */ 2384 for (i = 0; i < XL_TX_LIST_CNT; i++) { 2385 if (sc->xl_cdata.xl_tx_chain[i].map->dm_nsegs != 0) { 2386 map = sc->xl_cdata.xl_tx_chain[i].map; 2387 2388 bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, 2389 BUS_DMASYNC_POSTWRITE); 2390 bus_dmamap_unload(sc->sc_dmat, map); 2391 } 2392 if (sc->xl_cdata.xl_tx_chain[i].xl_mbuf != NULL) { 2393 m_freem(sc->xl_cdata.xl_tx_chain[i].xl_mbuf); 2394 sc->xl_cdata.xl_tx_chain[i].xl_mbuf = NULL; 2395 } 2396 } 2397 bzero((char *)&sc->xl_ldata->xl_tx_list, 2398 sizeof(sc->xl_ldata->xl_tx_list)); 2399 } 2400 2401 /* 2402 * Stop the adapter and free any mbufs allocated to the 2403 * RX and TX lists. 2404 */ 2405 void 2406 xl_stop(struct xl_softc *sc) 2407 { 2408 struct ifnet *ifp; 2409 2410 ifp = &sc->sc_arpcom.ac_if; 2411 ifp->if_timer = 0; 2412 2413 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_DISABLE); 2414 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_DISABLE); 2415 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB); 2416 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_DISCARD); 2417 xl_wait(sc); 2418 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_DISABLE); 2419 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); 2420 DELAY(800); 2421 2422 #ifdef foo 2423 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); 2424 xl_wait(sc); 2425 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); 2426 xl_wait(sc); 2427 #endif 2428 2429 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|XL_STAT_INTLATCH); 2430 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STAT_ENB|0); 2431 CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0); 2432 2433 if (sc->intr_ack) 2434 (*sc->intr_ack)(sc); 2435 2436 /* Stop the stats updater. */ 2437 timeout_del(&sc->xl_stsup_tmo); 2438 2439 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2440 2441 xl_freetxrx(sc); 2442 } 2443 2444 void 2445 xl_attach(struct xl_softc *sc) 2446 { 2447 u_int8_t enaddr[ETHER_ADDR_LEN]; 2448 u_int16_t xcvr[2]; 2449 struct ifnet *ifp = &sc->sc_arpcom.ac_if; 2450 int i, media = IFM_ETHER|IFM_100_TX|IFM_FDX; 2451 struct ifmedia *ifm; 2452 2453 i = splnet(); 2454 xl_reset(sc); 2455 splx(i); 2456 2457 /* 2458 * Get station address from the EEPROM. 2459 */ 2460 if (xl_read_eeprom(sc, (caddr_t)&enaddr, XL_EE_OEM_ADR0, 3, 1)) { 2461 printf("\n%s: failed to read station address\n", 2462 sc->sc_dev.dv_xname); 2463 return; 2464 } 2465 bcopy(enaddr, (char *)&sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN); 2466 2467 if (bus_dmamem_alloc(sc->sc_dmat, sizeof(struct xl_list_data), 2468 PAGE_SIZE, 0, sc->sc_listseg, 1, &sc->sc_listnseg, 2469 BUS_DMA_NOWAIT) != 0) { 2470 printf(": can't alloc list mem\n"); 2471 return; 2472 } 2473 if (bus_dmamem_map(sc->sc_dmat, sc->sc_listseg, sc->sc_listnseg, 2474 sizeof(struct xl_list_data), &sc->sc_listkva, 2475 BUS_DMA_NOWAIT) != 0) { 2476 printf(": can't map list mem\n"); 2477 return; 2478 } 2479 if (bus_dmamap_create(sc->sc_dmat, sizeof(struct xl_list_data), 1, 2480 sizeof(struct xl_list_data), 0, BUS_DMA_NOWAIT, 2481 &sc->sc_listmap) != 0) { 2482 printf(": can't alloc list map\n"); 2483 return; 2484 } 2485 if (bus_dmamap_load(sc->sc_dmat, sc->sc_listmap, sc->sc_listkva, 2486 sizeof(struct xl_list_data), NULL, BUS_DMA_NOWAIT) != 0) { 2487 printf(": can't load list map\n"); 2488 return; 2489 } 2490 sc->xl_ldata = (struct xl_list_data *)sc->sc_listkva; 2491 bzero(sc->xl_ldata, sizeof(struct xl_list_data)); 2492 2493 for (i = 0; i < XL_RX_LIST_CNT; i++) { 2494 if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 2495 0, BUS_DMA_NOWAIT, 2496 &sc->xl_cdata.xl_rx_chain[i].map) != 0) { 2497 printf(": can't create rx map\n"); 2498 return; 2499 } 2500 } 2501 if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, 2502 BUS_DMA_NOWAIT, &sc->sc_rx_sparemap) != 0) { 2503 printf(": can't create rx spare map\n"); 2504 return; 2505 } 2506 2507 for (i = 0; i < XL_TX_LIST_CNT; i++) { 2508 if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, 2509 XL_TX_LIST_CNT - 3, MCLBYTES, 0, BUS_DMA_NOWAIT, 2510 &sc->xl_cdata.xl_tx_chain[i].map) != 0) { 2511 printf(": can't create tx map\n"); 2512 return; 2513 } 2514 } 2515 if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, XL_TX_LIST_CNT - 3, 2516 MCLBYTES, 0, BUS_DMA_NOWAIT, &sc->sc_tx_sparemap) != 0) { 2517 printf(": can't create tx spare map\n"); 2518 return; 2519 } 2520 2521 printf(", address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr)); 2522 2523 if (sc->xl_flags & (XL_FLAG_INVERT_LED_PWR|XL_FLAG_INVERT_MII_PWR)) { 2524 u_int16_t n; 2525 2526 XL_SEL_WIN(2); 2527 n = CSR_READ_2(sc, 12); 2528 2529 if (sc->xl_flags & XL_FLAG_INVERT_LED_PWR) 2530 n |= 0x0010; 2531 2532 if (sc->xl_flags & XL_FLAG_INVERT_MII_PWR) 2533 n |= 0x4000; 2534 2535 CSR_WRITE_2(sc, 12, n); 2536 } 2537 2538 /* 2539 * Figure out the card type. 3c905B adapters have the 2540 * 'supportsNoTxLength' bit set in the capabilities 2541 * word in the EEPROM. 2542 * Note: my 3c575C cardbus card lies. It returns a value 2543 * of 0x1578 for its capabilities word, which is somewhat 2544 * nonsensical. Another way to distinguish a 3c90x chip 2545 * from a 3c90xB/C chip is to check for the 'supportsLargePackets' 2546 * bit. This will only be set for 3c90x boomerage chips. 2547 */ 2548 xl_read_eeprom(sc, (caddr_t)&sc->xl_caps, XL_EE_CAPS, 1, 0); 2549 if (sc->xl_caps & XL_CAPS_NO_TXLENGTH || 2550 !(sc->xl_caps & XL_CAPS_LARGE_PKTS)) 2551 sc->xl_type = XL_TYPE_905B; 2552 else 2553 sc->xl_type = XL_TYPE_90X; 2554 2555 /* Set the TX start threshold for best performance. */ 2556 sc->xl_tx_thresh = XL_MIN_FRAMELEN; 2557 2558 timeout_set(&sc->xl_stsup_tmo, xl_stats_update, sc); 2559 2560 ifp->if_softc = sc; 2561 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2562 ifp->if_ioctl = xl_ioctl; 2563 if (sc->xl_type == XL_TYPE_905B) 2564 ifp->if_start = xl_start_90xB; 2565 else 2566 ifp->if_start = xl_start; 2567 ifp->if_watchdog = xl_watchdog; 2568 ifp->if_baudrate = 10000000; 2569 IFQ_SET_MAXLEN(&ifp->if_snd, XL_TX_LIST_CNT - 1); 2570 IFQ_SET_READY(&ifp->if_snd); 2571 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 2572 2573 ifp->if_capabilities = IFCAP_VLAN_MTU; 2574 2575 #ifndef XL905B_TXCSUM_BROKEN 2576 ifp->if_capabilities |= IFCAP_CSUM_IPv4|IFCAP_CSUM_TCPv4| 2577 IFCAP_CSUM_UDPv4; 2578 #endif 2579 2580 XL_SEL_WIN(3); 2581 sc->xl_media = CSR_READ_2(sc, XL_W3_MEDIA_OPT); 2582 2583 xl_read_eeprom(sc, (char *)&xcvr, XL_EE_ICFG_0, 2, 0); 2584 sc->xl_xcvr = xcvr[0] | xcvr[1] << 16; 2585 sc->xl_xcvr &= XL_ICFG_CONNECTOR_MASK; 2586 sc->xl_xcvr >>= XL_ICFG_CONNECTOR_BITS; 2587 2588 xl_mediacheck(sc); 2589 2590 if (sc->xl_media & XL_MEDIAOPT_MII || sc->xl_media & XL_MEDIAOPT_BTX 2591 || sc->xl_media & XL_MEDIAOPT_BT4) { 2592 ifmedia_init(&sc->sc_mii.mii_media, 0, 2593 xl_ifmedia_upd, xl_ifmedia_sts); 2594 sc->xl_hasmii = 1; 2595 sc->sc_mii.mii_ifp = ifp; 2596 sc->sc_mii.mii_readreg = xl_miibus_readreg; 2597 sc->sc_mii.mii_writereg = xl_miibus_writereg; 2598 sc->sc_mii.mii_statchg = xl_miibus_statchg; 2599 xl_setcfg(sc); 2600 mii_attach((struct device *)sc, &sc->sc_mii, 0xffffffff, 2601 MII_PHY_ANY, MII_OFFSET_ANY, 0); 2602 2603 if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { 2604 ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 2605 0, NULL); 2606 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE); 2607 } 2608 else { 2609 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO); 2610 } 2611 ifm = &sc->sc_mii.mii_media; 2612 } 2613 else { 2614 ifmedia_init(&sc->ifmedia, 0, xl_ifmedia_upd, xl_ifmedia_sts); 2615 sc->xl_hasmii = 0; 2616 ifm = &sc->ifmedia; 2617 } 2618 2619 /* 2620 * Sanity check. If the user has selected "auto" and this isn't 2621 * a 10/100 card of some kind, we need to force the transceiver 2622 * type to something sane. 2623 */ 2624 if (sc->xl_xcvr == XL_XCVR_AUTO) { 2625 xl_choose_xcvr(sc, 0); 2626 i = splnet(); 2627 xl_reset(sc); 2628 splx(i); 2629 } 2630 2631 if (sc->xl_media & XL_MEDIAOPT_BT) { 2632 ifmedia_add(ifm, IFM_ETHER|IFM_10_T, 0, NULL); 2633 ifmedia_add(ifm, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); 2634 if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) 2635 ifmedia_add(ifm, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); 2636 } 2637 2638 if (sc->xl_media & (XL_MEDIAOPT_AUI|XL_MEDIAOPT_10FL)) { 2639 /* 2640 * Check for a 10baseFL board in disguise. 2641 */ 2642 if (sc->xl_type == XL_TYPE_905B && 2643 sc->xl_media == XL_MEDIAOPT_10FL) { 2644 ifmedia_add(ifm, IFM_ETHER|IFM_10_FL, 0, NULL); 2645 ifmedia_add(ifm, IFM_ETHER|IFM_10_FL|IFM_HDX, 2646 0, NULL); 2647 if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) 2648 ifmedia_add(ifm, 2649 IFM_ETHER|IFM_10_FL|IFM_FDX, 0, NULL); 2650 } else { 2651 ifmedia_add(ifm, IFM_ETHER|IFM_10_5, 0, NULL); 2652 } 2653 } 2654 2655 if (sc->xl_media & XL_MEDIAOPT_BNC) { 2656 ifmedia_add(ifm, IFM_ETHER|IFM_10_2, 0, NULL); 2657 } 2658 2659 if (sc->xl_media & XL_MEDIAOPT_BFX) { 2660 ifp->if_baudrate = 100000000; 2661 ifmedia_add(ifm, IFM_ETHER|IFM_100_FX, 0, NULL); 2662 } 2663 2664 /* Choose a default media. */ 2665 switch(sc->xl_xcvr) { 2666 case XL_XCVR_10BT: 2667 media = IFM_ETHER|IFM_10_T; 2668 xl_setmode(sc, media); 2669 break; 2670 case XL_XCVR_AUI: 2671 if (sc->xl_type == XL_TYPE_905B && 2672 sc->xl_media == XL_MEDIAOPT_10FL) { 2673 media = IFM_ETHER|IFM_10_FL; 2674 xl_setmode(sc, media); 2675 } else { 2676 media = IFM_ETHER|IFM_10_5; 2677 xl_setmode(sc, media); 2678 } 2679 break; 2680 case XL_XCVR_COAX: 2681 media = IFM_ETHER|IFM_10_2; 2682 xl_setmode(sc, media); 2683 break; 2684 case XL_XCVR_AUTO: 2685 case XL_XCVR_100BTX: 2686 case XL_XCVR_MII: 2687 /* Chosen by miibus */ 2688 break; 2689 case XL_XCVR_100BFX: 2690 media = IFM_ETHER|IFM_100_FX; 2691 xl_setmode(sc, media); 2692 break; 2693 default: 2694 printf("%s: unknown XCVR type: %d\n", sc->sc_dev.dv_xname, 2695 sc->xl_xcvr); 2696 /* 2697 * This will probably be wrong, but it prevents 2698 * the ifmedia code from panicking. 2699 */ 2700 media = IFM_ETHER | IFM_10_T; 2701 break; 2702 } 2703 2704 if (sc->xl_hasmii == 0) 2705 ifmedia_set(&sc->ifmedia, media); 2706 2707 if (sc->xl_flags & XL_FLAG_NO_XCVR_PWR) { 2708 XL_SEL_WIN(0); 2709 CSR_WRITE_2(sc, XL_W0_MFG_ID, XL_NO_XCVR_PWR_MAGICBITS); 2710 } 2711 2712 /* 2713 * Call MI attach routines. 2714 */ 2715 if_attach(ifp); 2716 ether_ifattach(ifp); 2717 2718 sc->sc_sdhook = shutdownhook_establish(xl_shutdown, sc); 2719 sc->sc_pwrhook = powerhook_establish(xl_power, sc); 2720 } 2721 2722 void 2723 xl_shutdown(void *v) 2724 { 2725 struct xl_softc *sc = (struct xl_softc *)v; 2726 2727 xl_reset(sc); 2728 xl_stop(sc); 2729 } 2730 2731 struct cfdriver xl_cd = { 2732 0, "xl", DV_IFNET 2733 }; 2734