if_wb.c revision 50477
1/* 2 * Copyright (c) 1997, 1998 3 * Bill Paul <wpaul@ctr.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: head/sys/pci/if_wb.c 50477 1999-08-28 01:08:13Z peter $ 33 */ 34 35/* 36 * Winbond fast ethernet PCI NIC driver 37 * 38 * Supports various cheap network adapters based on the Winbond W89C840F 39 * fast ethernet controller chip. This includes adapters manufactured by 40 * Winbond itself and some made by Linksys. 41 * 42 * Written by Bill Paul <wpaul@ctr.columbia.edu> 43 * Electrical Engineering Department 44 * Columbia University, New York City 45 */ 46 47/* 48 * The Winbond W89C840F chip is a bus master; in some ways it resembles 49 * a DEC 'tulip' chip, only not as complicated. Unfortunately, it has 50 * one major difference which is that while the registers do many of 51 * the same things as a tulip adapter, the offsets are different: where 52 * tulip registers are typically spaced 8 bytes apart, the Winbond 53 * registers are spaced 4 bytes apart. The receiver filter is also 54 * programmed differently. 55 * 56 * Like the tulip, the Winbond chip uses small descriptors containing 57 * a status word, a control word and 32-bit areas that can either be used 58 * to point to two external data blocks, or to point to a single block 59 * and another descriptor in a linked list. Descriptors can be grouped 60 * together in blocks to form fixed length rings or can be chained 61 * together in linked lists. A single packet may be spread out over 62 * several descriptors if necessary. 63 * 64 * For the receive ring, this driver uses a linked list of descriptors, 65 * each pointing to a single mbuf cluster buffer, which us large enough 66 * to hold an entire packet. The link list is looped back to created a 67 * closed ring. 68 * 69 * For transmission, the driver creates a linked list of 'super descriptors' 70 * which each contain several individual descriptors linked toghether. 71 * Each 'super descriptor' contains WB_MAXFRAGS descriptors, which we 72 * abuse as fragment pointers. This allows us to use a buffer managment 73 * scheme very similar to that used in the ThunderLAN and Etherlink XL 74 * drivers. 75 * 76 * Autonegotiation is performed using the external PHY via the MII bus. 77 * The sample boards I have all use a Davicom PHY. 78 * 79 * Note: the author of the Linux driver for the Winbond chip alludes 80 * to some sort of flaw in the chip's design that seems to mandate some 81 * drastic workaround which signigicantly impairs transmit performance. 82 * I have no idea what he's on about: transmit performance with all 83 * three of my test boards seems fine. 84 */ 85 86#include "bpf.h" 87#include "opt_bdg.h" 88 89#include <sys/param.h> 90#include <sys/systm.h> 91#include <sys/sockio.h> 92#include <sys/mbuf.h> 93#include <sys/malloc.h> 94#include <sys/kernel.h> 95#include <sys/socket.h> 96 97#include <net/if.h> 98#include <net/if_arp.h> 99#include <net/ethernet.h> 100#include <net/if_dl.h> 101#include <net/if_media.h> 102 103#if NBPF > 0 104#include <net/bpf.h> 105#endif 106 107#ifdef BRIDGE 108#include <net/bridge.h> 109#endif 110 111#include <vm/vm.h> /* for vtophys */ 112#include <vm/pmap.h> /* for vtophys */ 113#include <machine/clock.h> /* for DELAY */ 114#include <machine/bus_memio.h> 115#include <machine/bus_pio.h> 116#include <machine/bus.h> 117#include <machine/resource.h> 118#include <sys/bus.h> 119#include <sys/rman.h> 120 121#include <pci/pcireg.h> 122#include <pci/pcivar.h> 123 124#define WB_USEIOSPACE 125 126/* #define WB_BACKGROUND_AUTONEG */ 127 128#include <pci/if_wbreg.h> 129 130#ifndef lint 131static const char rcsid[] = 132 "$FreeBSD: head/sys/pci/if_wb.c 50477 1999-08-28 01:08:13Z peter $"; 133#endif 134 135/* 136 * Various supported device vendors/types and their names. 137 */ 138static struct wb_type wb_devs[] = { 139 { WB_VENDORID, WB_DEVICEID_840F, 140 "Winbond W89C840F 10/100BaseTX" }, 141 { CP_VENDORID, CP_DEVICEID_RL100, 142 "Compex RL100-ATX 10/100baseTX" }, 143 { 0, 0, NULL } 144}; 145 146/* 147 * Various supported PHY vendors/types and their names. Note that 148 * this driver will work with pretty much any MII-compliant PHY, 149 * so failure to positively identify the chip is not a fatal error. 150 */ 151 152static struct wb_type wb_phys[] = { 153 { TI_PHY_VENDORID, TI_PHY_10BT, "<TI ThunderLAN 10BT (internal)>" }, 154 { TI_PHY_VENDORID, TI_PHY_100VGPMI, "<TI TNETE211 100VG Any-LAN>" }, 155 { NS_PHY_VENDORID, NS_PHY_83840A, "<National Semiconductor DP83840A>"}, 156 { LEVEL1_PHY_VENDORID, LEVEL1_PHY_LXT970, "<Level 1 LXT970>" }, 157 { INTEL_PHY_VENDORID, INTEL_PHY_82555, "<Intel 82555>" }, 158 { SEEQ_PHY_VENDORID, SEEQ_PHY_80220, "<SEEQ 80220>" }, 159 { 0, 0, "<MII-compliant physical interface>" } 160}; 161 162static int wb_probe __P((device_t)); 163static int wb_attach __P((device_t)); 164static int wb_detach __P((device_t)); 165 166static int wb_newbuf __P((struct wb_softc *, 167 struct wb_chain_onefrag *, 168 struct mbuf *)); 169static int wb_encap __P((struct wb_softc *, struct wb_chain *, 170 struct mbuf *)); 171 172static void wb_rxeof __P((struct wb_softc *)); 173static void wb_rxeoc __P((struct wb_softc *)); 174static void wb_txeof __P((struct wb_softc *)); 175static void wb_txeoc __P((struct wb_softc *)); 176static void wb_intr __P((void *)); 177static void wb_start __P((struct ifnet *)); 178static int wb_ioctl __P((struct ifnet *, u_long, caddr_t)); 179static void wb_init __P((void *)); 180static void wb_stop __P((struct wb_softc *)); 181static void wb_watchdog __P((struct ifnet *)); 182static void wb_shutdown __P((device_t)); 183static int wb_ifmedia_upd __P((struct ifnet *)); 184static void wb_ifmedia_sts __P((struct ifnet *, struct ifmediareq *)); 185 186static void wb_eeprom_putbyte __P((struct wb_softc *, int)); 187static void wb_eeprom_getword __P((struct wb_softc *, int, u_int16_t *)); 188static void wb_read_eeprom __P((struct wb_softc *, caddr_t, int, 189 int, int)); 190static void wb_mii_sync __P((struct wb_softc *)); 191static void wb_mii_send __P((struct wb_softc *, u_int32_t, int)); 192static int wb_mii_readreg __P((struct wb_softc *, struct wb_mii_frame *)); 193static int wb_mii_writereg __P((struct wb_softc *, struct wb_mii_frame *)); 194static u_int16_t wb_phy_readreg __P((struct wb_softc *, int)); 195static void wb_phy_writereg __P((struct wb_softc *, int, int)); 196 197static void wb_autoneg_xmit __P((struct wb_softc *)); 198static void wb_autoneg_mii __P((struct wb_softc *, int, int)); 199static void wb_setmode_mii __P((struct wb_softc *, int)); 200static void wb_getmode_mii __P((struct wb_softc *)); 201static void wb_setcfg __P((struct wb_softc *, int)); 202static u_int8_t wb_calchash __P((caddr_t)); 203static void wb_setmulti __P((struct wb_softc *)); 204static void wb_reset __P((struct wb_softc *)); 205static int wb_list_rx_init __P((struct wb_softc *)); 206static int wb_list_tx_init __P((struct wb_softc *)); 207 208#ifdef WB_USEIOSPACE 209#define WB_RES SYS_RES_IOPORT 210#define WB_RID WB_PCI_LOIO 211#else 212#define WB_RES SYS_RES_MEMORY 213#define WB_RID WB_PCI_LOMEM 214#endif 215 216static device_method_t wb_methods[] = { 217 /* Device interface */ 218 DEVMETHOD(device_probe, wb_probe), 219 DEVMETHOD(device_attach, wb_attach), 220 DEVMETHOD(device_detach, wb_detach), 221 DEVMETHOD(device_shutdown, wb_shutdown), 222 { 0, 0 } 223}; 224 225static driver_t wb_driver = { 226 "wb", 227 wb_methods, 228 sizeof(struct wb_softc) 229}; 230 231static devclass_t wb_devclass; 232 233DRIVER_MODULE(wb, pci, wb_driver, wb_devclass, 0, 0); 234 235#define WB_SETBIT(sc, reg, x) \ 236 CSR_WRITE_4(sc, reg, \ 237 CSR_READ_4(sc, reg) | x) 238 239#define WB_CLRBIT(sc, reg, x) \ 240 CSR_WRITE_4(sc, reg, \ 241 CSR_READ_4(sc, reg) & ~x) 242 243#define SIO_SET(x) \ 244 CSR_WRITE_4(sc, WB_SIO, \ 245 CSR_READ_4(sc, WB_SIO) | x) 246 247#define SIO_CLR(x) \ 248 CSR_WRITE_4(sc, WB_SIO, \ 249 CSR_READ_4(sc, WB_SIO) & ~x) 250 251/* 252 * Send a read command and address to the EEPROM, check for ACK. 253 */ 254static void wb_eeprom_putbyte(sc, addr) 255 struct wb_softc *sc; 256 int addr; 257{ 258 register int d, i; 259 260 d = addr | WB_EECMD_READ; 261 262 /* 263 * Feed in each bit and stobe the clock. 264 */ 265 for (i = 0x400; i; i >>= 1) { 266 if (d & i) { 267 SIO_SET(WB_SIO_EE_DATAIN); 268 } else { 269 SIO_CLR(WB_SIO_EE_DATAIN); 270 } 271 DELAY(100); 272 SIO_SET(WB_SIO_EE_CLK); 273 DELAY(150); 274 SIO_CLR(WB_SIO_EE_CLK); 275 DELAY(100); 276 } 277 278 return; 279} 280 281/* 282 * Read a word of data stored in the EEPROM at address 'addr.' 283 */ 284static void wb_eeprom_getword(sc, addr, dest) 285 struct wb_softc *sc; 286 int addr; 287 u_int16_t *dest; 288{ 289 register int i; 290 u_int16_t word = 0; 291 292 /* Enter EEPROM access mode. */ 293 CSR_WRITE_4(sc, WB_SIO, WB_SIO_EESEL|WB_SIO_EE_CS); 294 295 /* 296 * Send address of word we want to read. 297 */ 298 wb_eeprom_putbyte(sc, addr); 299 300 CSR_WRITE_4(sc, WB_SIO, WB_SIO_EESEL|WB_SIO_EE_CS); 301 302 /* 303 * Start reading bits from EEPROM. 304 */ 305 for (i = 0x8000; i; i >>= 1) { 306 SIO_SET(WB_SIO_EE_CLK); 307 DELAY(100); 308 if (CSR_READ_4(sc, WB_SIO) & WB_SIO_EE_DATAOUT) 309 word |= i; 310 SIO_CLR(WB_SIO_EE_CLK); 311 DELAY(100); 312 } 313 314 /* Turn off EEPROM access mode. */ 315 CSR_WRITE_4(sc, WB_SIO, 0); 316 317 *dest = word; 318 319 return; 320} 321 322/* 323 * Read a sequence of words from the EEPROM. 324 */ 325static void wb_read_eeprom(sc, dest, off, cnt, swap) 326 struct wb_softc *sc; 327 caddr_t dest; 328 int off; 329 int cnt; 330 int swap; 331{ 332 int i; 333 u_int16_t word = 0, *ptr; 334 335 for (i = 0; i < cnt; i++) { 336 wb_eeprom_getword(sc, off + i, &word); 337 ptr = (u_int16_t *)(dest + (i * 2)); 338 if (swap) 339 *ptr = ntohs(word); 340 else 341 *ptr = word; 342 } 343 344 return; 345} 346 347/* 348 * Sync the PHYs by setting data bit and strobing the clock 32 times. 349 */ 350static void wb_mii_sync(sc) 351 struct wb_softc *sc; 352{ 353 register int i; 354 355 SIO_SET(WB_SIO_MII_DIR|WB_SIO_MII_DATAIN); 356 357 for (i = 0; i < 32; i++) { 358 SIO_SET(WB_SIO_MII_CLK); 359 DELAY(1); 360 SIO_CLR(WB_SIO_MII_CLK); 361 DELAY(1); 362 } 363 364 return; 365} 366 367/* 368 * Clock a series of bits through the MII. 369 */ 370static void wb_mii_send(sc, bits, cnt) 371 struct wb_softc *sc; 372 u_int32_t bits; 373 int cnt; 374{ 375 int i; 376 377 SIO_CLR(WB_SIO_MII_CLK); 378 379 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 380 if (bits & i) { 381 SIO_SET(WB_SIO_MII_DATAIN); 382 } else { 383 SIO_CLR(WB_SIO_MII_DATAIN); 384 } 385 DELAY(1); 386 SIO_CLR(WB_SIO_MII_CLK); 387 DELAY(1); 388 SIO_SET(WB_SIO_MII_CLK); 389 } 390} 391 392/* 393 * Read an PHY register through the MII. 394 */ 395static int wb_mii_readreg(sc, frame) 396 struct wb_softc *sc; 397 struct wb_mii_frame *frame; 398 399{ 400 int i, ack, s; 401 402 s = splimp(); 403 404 /* 405 * Set up frame for RX. 406 */ 407 frame->mii_stdelim = WB_MII_STARTDELIM; 408 frame->mii_opcode = WB_MII_READOP; 409 frame->mii_turnaround = 0; 410 frame->mii_data = 0; 411 412 CSR_WRITE_4(sc, WB_SIO, 0); 413 414 /* 415 * Turn on data xmit. 416 */ 417 SIO_SET(WB_SIO_MII_DIR); 418 419 wb_mii_sync(sc); 420 421 /* 422 * Send command/address info. 423 */ 424 wb_mii_send(sc, frame->mii_stdelim, 2); 425 wb_mii_send(sc, frame->mii_opcode, 2); 426 wb_mii_send(sc, frame->mii_phyaddr, 5); 427 wb_mii_send(sc, frame->mii_regaddr, 5); 428 429 /* Idle bit */ 430 SIO_CLR((WB_SIO_MII_CLK|WB_SIO_MII_DATAIN)); 431 DELAY(1); 432 SIO_SET(WB_SIO_MII_CLK); 433 DELAY(1); 434 435 /* Turn off xmit. */ 436 SIO_CLR(WB_SIO_MII_DIR); 437 /* Check for ack */ 438 SIO_CLR(WB_SIO_MII_CLK); 439 DELAY(1); 440 SIO_SET(WB_SIO_MII_CLK); 441 DELAY(1); 442 ack = CSR_READ_4(sc, WB_SIO) & WB_SIO_MII_DATAOUT; 443 SIO_CLR(WB_SIO_MII_CLK); 444 DELAY(1); 445 SIO_SET(WB_SIO_MII_CLK); 446 DELAY(1); 447 448 /* 449 * Now try reading data bits. If the ack failed, we still 450 * need to clock through 16 cycles to keep the PHY(s) in sync. 451 */ 452 if (ack) { 453 for(i = 0; i < 16; i++) { 454 SIO_CLR(WB_SIO_MII_CLK); 455 DELAY(1); 456 SIO_SET(WB_SIO_MII_CLK); 457 DELAY(1); 458 } 459 goto fail; 460 } 461 462 for (i = 0x8000; i; i >>= 1) { 463 SIO_CLR(WB_SIO_MII_CLK); 464 DELAY(1); 465 if (!ack) { 466 if (CSR_READ_4(sc, WB_SIO) & WB_SIO_MII_DATAOUT) 467 frame->mii_data |= i; 468 DELAY(1); 469 } 470 SIO_SET(WB_SIO_MII_CLK); 471 DELAY(1); 472 } 473 474fail: 475 476 SIO_CLR(WB_SIO_MII_CLK); 477 DELAY(1); 478 SIO_SET(WB_SIO_MII_CLK); 479 DELAY(1); 480 481 splx(s); 482 483 if (ack) 484 return(1); 485 return(0); 486} 487 488/* 489 * Write to a PHY register through the MII. 490 */ 491static int wb_mii_writereg(sc, frame) 492 struct wb_softc *sc; 493 struct wb_mii_frame *frame; 494 495{ 496 int s; 497 498 s = splimp(); 499 /* 500 * Set up frame for TX. 501 */ 502 503 frame->mii_stdelim = WB_MII_STARTDELIM; 504 frame->mii_opcode = WB_MII_WRITEOP; 505 frame->mii_turnaround = WB_MII_TURNAROUND; 506 507 /* 508 * Turn on data output. 509 */ 510 SIO_SET(WB_SIO_MII_DIR); 511 512 wb_mii_sync(sc); 513 514 wb_mii_send(sc, frame->mii_stdelim, 2); 515 wb_mii_send(sc, frame->mii_opcode, 2); 516 wb_mii_send(sc, frame->mii_phyaddr, 5); 517 wb_mii_send(sc, frame->mii_regaddr, 5); 518 wb_mii_send(sc, frame->mii_turnaround, 2); 519 wb_mii_send(sc, frame->mii_data, 16); 520 521 /* Idle bit. */ 522 SIO_SET(WB_SIO_MII_CLK); 523 DELAY(1); 524 SIO_CLR(WB_SIO_MII_CLK); 525 DELAY(1); 526 527 /* 528 * Turn off xmit. 529 */ 530 SIO_CLR(WB_SIO_MII_DIR); 531 532 splx(s); 533 534 return(0); 535} 536 537static u_int16_t wb_phy_readreg(sc, reg) 538 struct wb_softc *sc; 539 int reg; 540{ 541 struct wb_mii_frame frame; 542 543 bzero((char *)&frame, sizeof(frame)); 544 545 frame.mii_phyaddr = sc->wb_phy_addr; 546 frame.mii_regaddr = reg; 547 wb_mii_readreg(sc, &frame); 548 549 return(frame.mii_data); 550} 551 552static void wb_phy_writereg(sc, reg, data) 553 struct wb_softc *sc; 554 int reg; 555 int data; 556{ 557 struct wb_mii_frame frame; 558 559 bzero((char *)&frame, sizeof(frame)); 560 561 frame.mii_phyaddr = sc->wb_phy_addr; 562 frame.mii_regaddr = reg; 563 frame.mii_data = data; 564 565 wb_mii_writereg(sc, &frame); 566 567 return; 568} 569 570static u_int8_t wb_calchash(addr) 571 caddr_t addr; 572{ 573 u_int32_t crc, carry; 574 int i, j; 575 u_int8_t c; 576 577 /* Compute CRC for the address value. */ 578 crc = 0xFFFFFFFF; /* initial value */ 579 580 for (i = 0; i < 6; i++) { 581 c = *(addr + i); 582 for (j = 0; j < 8; j++) { 583 carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); 584 crc <<= 1; 585 c >>= 1; 586 if (carry) 587 crc = (crc ^ 0x04c11db6) | carry; 588 } 589 } 590 591 /* 592 * return the filter bit position 593 * Note: I arrived at the following nonsense 594 * through experimentation. It's not the usual way to 595 * generate the bit position but it's the only thing 596 * I could come up with that works. 597 */ 598 return(~(crc >> 26) & 0x0000003F); 599} 600 601/* 602 * Program the 64-bit multicast hash filter. 603 */ 604static void wb_setmulti(sc) 605 struct wb_softc *sc; 606{ 607 struct ifnet *ifp; 608 int h = 0; 609 u_int32_t hashes[2] = { 0, 0 }; 610 struct ifmultiaddr *ifma; 611 u_int32_t rxfilt; 612 int mcnt = 0; 613 614 ifp = &sc->arpcom.ac_if; 615 616 rxfilt = CSR_READ_4(sc, WB_NETCFG); 617 618 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 619 rxfilt |= WB_NETCFG_RX_MULTI; 620 CSR_WRITE_4(sc, WB_NETCFG, rxfilt); 621 CSR_WRITE_4(sc, WB_MAR0, 0xFFFFFFFF); 622 CSR_WRITE_4(sc, WB_MAR1, 0xFFFFFFFF); 623 return; 624 } 625 626 /* first, zot all the existing hash bits */ 627 CSR_WRITE_4(sc, WB_MAR0, 0); 628 CSR_WRITE_4(sc, WB_MAR1, 0); 629 630 /* now program new ones */ 631 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL; 632 ifma = ifma->ifma_link.le_next) { 633 if (ifma->ifma_addr->sa_family != AF_LINK) 634 continue; 635 h = wb_calchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 636 if (h < 32) 637 hashes[0] |= (1 << h); 638 else 639 hashes[1] |= (1 << (h - 32)); 640 mcnt++; 641 } 642 643 if (mcnt) 644 rxfilt |= WB_NETCFG_RX_MULTI; 645 else 646 rxfilt &= ~WB_NETCFG_RX_MULTI; 647 648 CSR_WRITE_4(sc, WB_MAR0, hashes[0]); 649 CSR_WRITE_4(sc, WB_MAR1, hashes[1]); 650 CSR_WRITE_4(sc, WB_NETCFG, rxfilt); 651 652 return; 653} 654 655/* 656 * Initiate an autonegotiation session. 657 */ 658static void wb_autoneg_xmit(sc) 659 struct wb_softc *sc; 660{ 661 u_int16_t phy_sts; 662 663 wb_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); 664 DELAY(500); 665 while(wb_phy_readreg(sc, PHY_BMCR) 666 & PHY_BMCR_RESET); 667 668 phy_sts = wb_phy_readreg(sc, PHY_BMCR); 669 phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; 670 wb_phy_writereg(sc, PHY_BMCR, phy_sts); 671 672 return; 673} 674 675/* 676 * Invoke autonegotiation on a PHY. 677 */ 678static void wb_autoneg_mii(sc, flag, verbose) 679 struct wb_softc *sc; 680 int flag; 681 int verbose; 682{ 683 u_int16_t phy_sts = 0, media, advert, ability; 684 struct ifnet *ifp; 685 struct ifmedia *ifm; 686 687 ifm = &sc->ifmedia; 688 ifp = &sc->arpcom.ac_if; 689 690 ifm->ifm_media = IFM_ETHER | IFM_AUTO; 691 692 /* 693 * The 100baseT4 PHY on the 3c905-T4 has the 'autoneg supported' 694 * bit cleared in the status register, but has the 'autoneg enabled' 695 * bit set in the control register. This is a contradiction, and 696 * I'm not sure how to handle it. If you want to force an attempt 697 * to autoneg for 100baseT4 PHYs, #define FORCE_AUTONEG_TFOUR 698 * and see what happens. 699 */ 700#ifndef FORCE_AUTONEG_TFOUR 701 /* 702 * First, see if autoneg is supported. If not, there's 703 * no point in continuing. 704 */ 705 phy_sts = wb_phy_readreg(sc, PHY_BMSR); 706 if (!(phy_sts & PHY_BMSR_CANAUTONEG)) { 707 if (verbose) 708 printf("wb%d: autonegotiation not supported\n", 709 sc->wb_unit); 710 ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; 711 return; 712 } 713#endif 714 715 switch (flag) { 716 case WB_FLAG_FORCEDELAY: 717 /* 718 * XXX Never use this option anywhere but in the probe 719 * routine: making the kernel stop dead in its tracks 720 * for three whole seconds after we've gone multi-user 721 * is really bad manners. 722 */ 723 wb_autoneg_xmit(sc); 724 DELAY(5000000); 725 break; 726 case WB_FLAG_SCHEDDELAY: 727 /* 728 * Wait for the transmitter to go idle before starting 729 * an autoneg session, otherwise wb_start() may clobber 730 * our timeout, and we don't want to allow transmission 731 * during an autoneg session since that can screw it up. 732 */ 733 if (sc->wb_cdata.wb_tx_head != NULL) { 734 sc->wb_want_auto = 1; 735 return; 736 } 737 wb_autoneg_xmit(sc); 738 ifp->if_timer = 5; 739 sc->wb_autoneg = 1; 740 sc->wb_want_auto = 0; 741 return; 742 break; 743 case WB_FLAG_DELAYTIMEO: 744 ifp->if_timer = 0; 745 sc->wb_autoneg = 0; 746 break; 747 default: 748 printf("wb%d: invalid autoneg flag: %d\n", sc->wb_unit, flag); 749 return; 750 } 751 752 if (wb_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_AUTONEGCOMP) { 753 if (verbose) 754 printf("wb%d: autoneg complete, ", sc->wb_unit); 755 phy_sts = wb_phy_readreg(sc, PHY_BMSR); 756 } else { 757 if (verbose) 758 printf("wb%d: autoneg not complete, ", sc->wb_unit); 759 } 760 761 media = wb_phy_readreg(sc, PHY_BMCR); 762 763 /* Link is good. Report modes and set duplex mode. */ 764 if (wb_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT) { 765 if (verbose) 766 printf("link status good "); 767 advert = wb_phy_readreg(sc, PHY_ANAR); 768 ability = wb_phy_readreg(sc, PHY_LPAR); 769 770 if (advert & PHY_ANAR_100BT4 && ability & PHY_ANAR_100BT4) { 771 ifm->ifm_media = IFM_ETHER|IFM_100_T4; 772 media |= PHY_BMCR_SPEEDSEL; 773 media &= ~PHY_BMCR_DUPLEX; 774 printf("(100baseT4)\n"); 775 } else if (advert & PHY_ANAR_100BTXFULL && 776 ability & PHY_ANAR_100BTXFULL) { 777 ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX; 778 media |= PHY_BMCR_SPEEDSEL; 779 media |= PHY_BMCR_DUPLEX; 780 printf("(full-duplex, 100Mbps)\n"); 781 } else if (advert & PHY_ANAR_100BTXHALF && 782 ability & PHY_ANAR_100BTXHALF) { 783 ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX; 784 media |= PHY_BMCR_SPEEDSEL; 785 media &= ~PHY_BMCR_DUPLEX; 786 printf("(half-duplex, 100Mbps)\n"); 787 } else if (advert & PHY_ANAR_10BTFULL && 788 ability & PHY_ANAR_10BTFULL) { 789 ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX; 790 media &= ~PHY_BMCR_SPEEDSEL; 791 media |= PHY_BMCR_DUPLEX; 792 printf("(full-duplex, 10Mbps)\n"); 793 } else /* if (advert & PHY_ANAR_10BTHALF && 794 ability & PHY_ANAR_10BTHALF) */ { 795 ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; 796 media &= ~PHY_BMCR_SPEEDSEL; 797 media &= ~PHY_BMCR_DUPLEX; 798 printf("(half-duplex, 10Mbps)\n"); 799 } 800 801 media &= ~PHY_BMCR_AUTONEGENBL; 802 803 /* Set ASIC's duplex mode to match the PHY. */ 804 wb_setcfg(sc, media); 805 wb_phy_writereg(sc, PHY_BMCR, media); 806 } else { 807 if (verbose) 808 printf("no carrier\n"); 809 } 810 811 wb_init(sc); 812 813 if (sc->wb_tx_pend) { 814 sc->wb_autoneg = 0; 815 sc->wb_tx_pend = 0; 816 wb_start(ifp); 817 } 818 819 return; 820} 821 822static void wb_getmode_mii(sc) 823 struct wb_softc *sc; 824{ 825 u_int16_t bmsr; 826 struct ifnet *ifp; 827 828 ifp = &sc->arpcom.ac_if; 829 830 bmsr = wb_phy_readreg(sc, PHY_BMSR); 831 if (bootverbose) 832 printf("wb%d: PHY status word: %x\n", sc->wb_unit, bmsr); 833 834 /* fallback */ 835 sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; 836 837 if (bmsr & PHY_BMSR_10BTHALF) { 838 if (bootverbose) 839 printf("wb%d: 10Mbps half-duplex mode supported\n", 840 sc->wb_unit); 841 ifmedia_add(&sc->ifmedia, 842 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); 843 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); 844 } 845 846 if (bmsr & PHY_BMSR_10BTFULL) { 847 if (bootverbose) 848 printf("wb%d: 10Mbps full-duplex mode supported\n", 849 sc->wb_unit); 850 ifmedia_add(&sc->ifmedia, 851 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); 852 sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX; 853 } 854 855 if (bmsr & PHY_BMSR_100BTXHALF) { 856 if (bootverbose) 857 printf("wb%d: 100Mbps half-duplex mode supported\n", 858 sc->wb_unit); 859 ifp->if_baudrate = 100000000; 860 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL); 861 ifmedia_add(&sc->ifmedia, 862 IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL); 863 sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX; 864 } 865 866 if (bmsr & PHY_BMSR_100BTXFULL) { 867 if (bootverbose) 868 printf("wb%d: 100Mbps full-duplex mode supported\n", 869 sc->wb_unit); 870 ifp->if_baudrate = 100000000; 871 ifmedia_add(&sc->ifmedia, 872 IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL); 873 sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX; 874 } 875 876 /* Some also support 100BaseT4. */ 877 if (bmsr & PHY_BMSR_100BT4) { 878 if (bootverbose) 879 printf("wb%d: 100baseT4 mode supported\n", sc->wb_unit); 880 ifp->if_baudrate = 100000000; 881 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_T4, 0, NULL); 882 sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_T4; 883#ifdef FORCE_AUTONEG_TFOUR 884 if (bootverbose) 885 printf("wb%d: forcing on autoneg support for BT4\n", 886 sc->wb_unit); 887 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0 NULL): 888 sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO; 889#endif 890 } 891 892 if (bmsr & PHY_BMSR_CANAUTONEG) { 893 if (bootverbose) 894 printf("wb%d: autoneg supported\n", sc->wb_unit); 895 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL); 896 sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO; 897 } 898 899 return; 900} 901 902/* 903 * Set speed and duplex mode. 904 */ 905static void wb_setmode_mii(sc, media) 906 struct wb_softc *sc; 907 int media; 908{ 909 u_int16_t bmcr; 910 struct ifnet *ifp; 911 912 ifp = &sc->arpcom.ac_if; 913 914 /* 915 * If an autoneg session is in progress, stop it. 916 */ 917 if (sc->wb_autoneg) { 918 printf("wb%d: canceling autoneg session\n", sc->wb_unit); 919 ifp->if_timer = sc->wb_autoneg = sc->wb_want_auto = 0; 920 bmcr = wb_phy_readreg(sc, PHY_BMCR); 921 bmcr &= ~PHY_BMCR_AUTONEGENBL; 922 wb_phy_writereg(sc, PHY_BMCR, bmcr); 923 } 924 925 printf("wb%d: selecting MII, ", sc->wb_unit); 926 927 bmcr = wb_phy_readreg(sc, PHY_BMCR); 928 929 bmcr &= ~(PHY_BMCR_AUTONEGENBL|PHY_BMCR_SPEEDSEL| 930 PHY_BMCR_DUPLEX|PHY_BMCR_LOOPBK); 931 932 if (IFM_SUBTYPE(media) == IFM_100_T4) { 933 printf("100Mbps/T4, half-duplex\n"); 934 bmcr |= PHY_BMCR_SPEEDSEL; 935 bmcr &= ~PHY_BMCR_DUPLEX; 936 } 937 938 if (IFM_SUBTYPE(media) == IFM_100_TX) { 939 printf("100Mbps, "); 940 bmcr |= PHY_BMCR_SPEEDSEL; 941 } 942 943 if (IFM_SUBTYPE(media) == IFM_10_T) { 944 printf("10Mbps, "); 945 bmcr &= ~PHY_BMCR_SPEEDSEL; 946 } 947 948 if ((media & IFM_GMASK) == IFM_FDX) { 949 printf("full duplex\n"); 950 bmcr |= PHY_BMCR_DUPLEX; 951 } else { 952 printf("half duplex\n"); 953 bmcr &= ~PHY_BMCR_DUPLEX; 954 } 955 956 wb_setcfg(sc, bmcr); 957 wb_phy_writereg(sc, PHY_BMCR, bmcr); 958 959 return; 960} 961 962/* 963 * The Winbond manual states that in order to fiddle with the 964 * 'full-duplex' and '100Mbps' bits in the netconfig register, we 965 * first have to put the transmit and/or receive logic in the idle state. 966 */ 967static void wb_setcfg(sc, bmcr) 968 struct wb_softc *sc; 969 int bmcr; 970{ 971 int i, restart = 0; 972 973 if (CSR_READ_4(sc, WB_NETCFG) & (WB_NETCFG_TX_ON|WB_NETCFG_RX_ON)) { 974 restart = 1; 975 WB_CLRBIT(sc, WB_NETCFG, (WB_NETCFG_TX_ON|WB_NETCFG_RX_ON)); 976 977 for (i = 0; i < WB_TIMEOUT; i++) { 978 DELAY(10); 979 if ((CSR_READ_4(sc, WB_ISR) & WB_ISR_TX_IDLE) && 980 (CSR_READ_4(sc, WB_ISR) & WB_ISR_RX_IDLE)) 981 break; 982 } 983 984 if (i == WB_TIMEOUT) 985 printf("wb%d: failed to force tx and " 986 "rx to idle state\n", sc->wb_unit); 987 } 988 989 if (bmcr & PHY_BMCR_SPEEDSEL) 990 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_100MBPS); 991 else 992 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_100MBPS); 993 994 if (bmcr & PHY_BMCR_DUPLEX) 995 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_FULLDUPLEX); 996 else 997 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_FULLDUPLEX); 998 999 if (restart) 1000 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_TX_ON|WB_NETCFG_RX_ON); 1001 1002 return; 1003} 1004 1005static void wb_reset(sc) 1006 struct wb_softc *sc; 1007{ 1008 register int i; 1009 1010 WB_SETBIT(sc, WB_BUSCTL, WB_BUSCTL_RESET); 1011 1012 for (i = 0; i < WB_TIMEOUT; i++) { 1013 DELAY(10); 1014 if (!(CSR_READ_4(sc, WB_BUSCTL) & WB_BUSCTL_RESET)) 1015 break; 1016 } 1017 if (i == WB_TIMEOUT) 1018 printf("wb%d: reset never completed!\n", sc->wb_unit); 1019 1020 /* Wait a little while for the chip to get its brains in order. */ 1021 DELAY(1000); 1022 1023 /* Reset the damn PHY too. */ 1024 if (sc->wb_pinfo != NULL) 1025 wb_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); 1026 1027 return; 1028} 1029 1030/* 1031 * Probe for a Winbond chip. Check the PCI vendor and device 1032 * IDs against our list and return a device name if we find a match. 1033 */ 1034static int wb_probe(dev) 1035 device_t dev; 1036{ 1037 struct wb_type *t; 1038 1039 t = wb_devs; 1040 1041 while(t->wb_name != NULL) { 1042 if ((pci_get_vendor(dev) == t->wb_vid) && 1043 (pci_get_device(dev) == t->wb_did)) { 1044 device_set_desc(dev, t->wb_name); 1045 return(0); 1046 } 1047 t++; 1048 } 1049 1050 return(ENXIO); 1051} 1052 1053/* 1054 * Attach the interface. Allocate softc structures, do ifmedia 1055 * setup and ethernet/BPF attach. 1056 */ 1057static int wb_attach(dev) 1058 device_t dev; 1059{ 1060 int s, i; 1061 u_char eaddr[ETHER_ADDR_LEN]; 1062 u_int32_t command; 1063 struct wb_softc *sc; 1064 struct ifnet *ifp; 1065 int media = IFM_ETHER|IFM_100_TX|IFM_FDX; 1066 unsigned int round; 1067 caddr_t roundptr; 1068 struct wb_type *p; 1069 u_int16_t phy_vid, phy_did, phy_sts; 1070 int unit, error = 0, rid; 1071 1072 s = splimp(); 1073 1074 sc = device_get_softc(dev); 1075 unit = device_get_unit(dev); 1076 bzero(sc, sizeof(struct wb_softc)); 1077 1078 /* 1079 * Handle power management nonsense. 1080 */ 1081 1082 command = pci_read_config(dev, WB_PCI_CAPID, 4) & 0x000000FF; 1083 if (command == 0x01) { 1084 1085 command = pci_read_config(dev, WB_PCI_PWRMGMTCTRL, 4); 1086 if (command & WB_PSTATE_MASK) { 1087 u_int32_t iobase, membase, irq; 1088 1089 /* Save important PCI config data. */ 1090 iobase = pci_read_config(dev, WB_PCI_LOIO, 4); 1091 membase = pci_read_config(dev, WB_PCI_LOMEM, 4); 1092 irq = pci_read_config(dev, WB_PCI_INTLINE, 4); 1093 1094 /* Reset the power state. */ 1095 printf("wb%d: chip is in D%d power mode " 1096 "-- setting to D0\n", unit, command & WB_PSTATE_MASK); 1097 command &= 0xFFFFFFFC; 1098 pci_write_config(dev, WB_PCI_PWRMGMTCTRL, command, 4); 1099 1100 /* Restore PCI config data. */ 1101 pci_write_config(dev, WB_PCI_LOIO, iobase, 4); 1102 pci_write_config(dev, WB_PCI_LOMEM, membase, 4); 1103 pci_write_config(dev, WB_PCI_INTLINE, irq, 4); 1104 } 1105 } 1106 1107 /* 1108 * Map control/status registers. 1109 */ 1110 command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); 1111 command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN); 1112 pci_write_config(dev, PCI_COMMAND_STATUS_REG, command, 4); 1113 command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); 1114 1115#ifdef WB_USEIOSPACE 1116 if (!(command & PCIM_CMD_PORTEN)) { 1117 printf("wb%d: failed to enable I/O ports!\n", unit); 1118 error = ENXIO; 1119 goto fail; 1120 } 1121#else 1122 if (!(command & PCIM_CMD_MEMEN)) { 1123 printf("wb%d: failed to enable memory mapping!\n", unit); 1124 error = ENXIO; 1125 goto fail; 1126 } 1127#endif 1128 1129 rid = WB_RID; 1130 sc->wb_res = bus_alloc_resource(dev, WB_RES, &rid, 1131 0, ~0, 1, RF_ACTIVE); 1132 1133 if (sc->wb_res == NULL) { 1134 printf("wb%d: couldn't map ports/memory\n", unit); 1135 error = ENXIO; 1136 goto fail; 1137 } 1138 1139 sc->wb_btag = rman_get_bustag(sc->wb_res); 1140 sc->wb_bhandle = rman_get_bushandle(sc->wb_res); 1141 1142 /* Allocate interrupt */ 1143 rid = 0; 1144 sc->wb_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 1145 RF_SHAREABLE | RF_ACTIVE); 1146 1147 if (sc->wb_irq == NULL) { 1148 printf("wb%d: couldn't map interrupt\n", unit); 1149 bus_release_resource(dev, WB_RES, WB_RID, sc->wb_res); 1150 error = ENXIO; 1151 goto fail; 1152 } 1153 1154 error = bus_setup_intr(dev, sc->wb_irq, INTR_TYPE_NET, 1155 wb_intr, sc, &sc->wb_intrhand); 1156 1157 if (error) { 1158 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->wb_irq); 1159 bus_release_resource(dev, WB_RES, WB_RID, sc->wb_res); 1160 printf("wb%d: couldn't set up irq\n", unit); 1161 goto fail; 1162 } 1163 1164 /* Reset the adapter. */ 1165 wb_reset(sc); 1166 1167 /* 1168 * Get station address from the EEPROM. 1169 */ 1170 wb_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 0); 1171 1172 /* 1173 * A Winbond chip was detected. Inform the world. 1174 */ 1175 printf("wb%d: Ethernet address: %6D\n", unit, eaddr, ":"); 1176 1177 sc->wb_unit = unit; 1178 bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 1179 1180 sc->wb_ldata_ptr = malloc(sizeof(struct wb_list_data) + 8, 1181 M_DEVBUF, M_NOWAIT); 1182 if (sc->wb_ldata_ptr == NULL) { 1183 printf("wb%d: no memory for list buffers!\n", unit); 1184 bus_teardown_intr(dev, sc->wb_irq, sc->wb_intrhand); 1185 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->wb_irq); 1186 bus_release_resource(dev, WB_RES, WB_RID, sc->wb_res); 1187 error = ENXIO; 1188 goto fail; 1189 } 1190 1191 sc->wb_ldata = (struct wb_list_data *)sc->wb_ldata_ptr; 1192 round = (uintptr_t)sc->wb_ldata_ptr & 0xF; 1193 roundptr = sc->wb_ldata_ptr; 1194 for (i = 0; i < 8; i++) { 1195 if (round % 8) { 1196 round++; 1197 roundptr++; 1198 } else 1199 break; 1200 } 1201 sc->wb_ldata = (struct wb_list_data *)roundptr; 1202 bzero(sc->wb_ldata, sizeof(struct wb_list_data)); 1203 1204 ifp = &sc->arpcom.ac_if; 1205 ifp->if_softc = sc; 1206 ifp->if_unit = unit; 1207 ifp->if_name = "wb"; 1208 ifp->if_mtu = ETHERMTU; 1209 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1210 ifp->if_ioctl = wb_ioctl; 1211 ifp->if_output = ether_output; 1212 ifp->if_start = wb_start; 1213 ifp->if_watchdog = wb_watchdog; 1214 ifp->if_init = wb_init; 1215 ifp->if_baudrate = 10000000; 1216 ifp->if_snd.ifq_maxlen = WB_TX_LIST_CNT - 1; 1217 1218 if (bootverbose) 1219 printf("wb%d: probing for a PHY\n", sc->wb_unit); 1220 for (i = WB_PHYADDR_MIN; i < WB_PHYADDR_MAX + 1; i++) { 1221 if (bootverbose) 1222 printf("wb%d: checking address: %d\n", 1223 sc->wb_unit, i); 1224 sc->wb_phy_addr = i; 1225 wb_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); 1226 DELAY(500); 1227 while(wb_phy_readreg(sc, PHY_BMCR) 1228 & PHY_BMCR_RESET); 1229 if ((phy_sts = wb_phy_readreg(sc, PHY_BMSR))) 1230 break; 1231 } 1232 if (phy_sts) { 1233 phy_vid = wb_phy_readreg(sc, PHY_VENID); 1234 phy_did = wb_phy_readreg(sc, PHY_DEVID); 1235 if (bootverbose) 1236 printf("wb%d: found PHY at address %d, ", 1237 sc->wb_unit, sc->wb_phy_addr); 1238 if (bootverbose) 1239 printf("vendor id: %x device id: %x\n", 1240 phy_vid, phy_did); 1241 p = wb_phys; 1242 while(p->wb_vid) { 1243 if (phy_vid == p->wb_vid && 1244 (phy_did | 0x000F) == p->wb_did) { 1245 sc->wb_pinfo = p; 1246 break; 1247 } 1248 p++; 1249 } 1250 if (sc->wb_pinfo == NULL) 1251 sc->wb_pinfo = &wb_phys[PHY_UNKNOWN]; 1252 if (bootverbose) 1253 printf("wb%d: PHY type: %s\n", 1254 sc->wb_unit, sc->wb_pinfo->wb_name); 1255 } else { 1256 printf("wb%d: MII without any phy!\n", sc->wb_unit); 1257 bus_teardown_intr(dev, sc->wb_irq, sc->wb_intrhand); 1258 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->wb_irq); 1259 bus_release_resource(dev, WB_RES, WB_RID, sc->wb_res); 1260 free(sc->wb_ldata_ptr, M_DEVBUF); 1261 error = ENXIO; 1262 goto fail; 1263 } 1264 1265 /* 1266 * Do ifmedia setup. 1267 */ 1268 ifmedia_init(&sc->ifmedia, 0, wb_ifmedia_upd, wb_ifmedia_sts); 1269 1270 wb_getmode_mii(sc); 1271 if (cold) { 1272 wb_autoneg_mii(sc, WB_FLAG_FORCEDELAY, 1); 1273 wb_stop(sc); 1274 } else { 1275 wb_init(sc); 1276 wb_autoneg_mii(sc, WB_FLAG_SCHEDDELAY, 1); 1277 } 1278 media = sc->ifmedia.ifm_media; 1279 1280 ifmedia_set(&sc->ifmedia, media); 1281 1282 /* 1283 * Call MI attach routines. 1284 */ 1285 if_attach(ifp); 1286 ether_ifattach(ifp); 1287 1288#if NBPF > 0 1289 bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); 1290#endif 1291 1292fail: 1293 splx(s); 1294 return(error); 1295} 1296 1297static int wb_detach(dev) 1298 device_t dev; 1299{ 1300 struct wb_softc *sc; 1301 struct ifnet *ifp; 1302 int s; 1303 1304 s = splimp(); 1305 1306 sc = device_get_softc(dev); 1307 ifp = &sc->arpcom.ac_if; 1308 1309 wb_stop(sc); 1310 if_detach(ifp); 1311 1312 bus_teardown_intr(dev, sc->wb_irq, sc->wb_intrhand); 1313 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->wb_irq); 1314 bus_release_resource(dev, WB_RES, WB_RID, sc->wb_res); 1315 1316 free(sc->wb_ldata_ptr, M_DEVBUF); 1317 ifmedia_removeall(&sc->ifmedia); 1318 1319 splx(s); 1320 1321 return(0); 1322} 1323 1324/* 1325 * Initialize the transmit descriptors. 1326 */ 1327static int wb_list_tx_init(sc) 1328 struct wb_softc *sc; 1329{ 1330 struct wb_chain_data *cd; 1331 struct wb_list_data *ld; 1332 int i; 1333 1334 cd = &sc->wb_cdata; 1335 ld = sc->wb_ldata; 1336 1337 for (i = 0; i < WB_TX_LIST_CNT; i++) { 1338 cd->wb_tx_chain[i].wb_ptr = &ld->wb_tx_list[i]; 1339 if (i == (WB_TX_LIST_CNT - 1)) { 1340 cd->wb_tx_chain[i].wb_nextdesc = 1341 &cd->wb_tx_chain[0]; 1342 } else { 1343 cd->wb_tx_chain[i].wb_nextdesc = 1344 &cd->wb_tx_chain[i + 1]; 1345 } 1346 } 1347 1348 cd->wb_tx_free = &cd->wb_tx_chain[0]; 1349 cd->wb_tx_tail = cd->wb_tx_head = NULL; 1350 1351 return(0); 1352} 1353 1354 1355/* 1356 * Initialize the RX descriptors and allocate mbufs for them. Note that 1357 * we arrange the descriptors in a closed ring, so that the last descriptor 1358 * points back to the first. 1359 */ 1360static int wb_list_rx_init(sc) 1361 struct wb_softc *sc; 1362{ 1363 struct wb_chain_data *cd; 1364 struct wb_list_data *ld; 1365 int i; 1366 1367 cd = &sc->wb_cdata; 1368 ld = sc->wb_ldata; 1369 1370 for (i = 0; i < WB_RX_LIST_CNT; i++) { 1371 cd->wb_rx_chain[i].wb_ptr = 1372 (struct wb_desc *)&ld->wb_rx_list[i]; 1373 if (wb_newbuf(sc, &cd->wb_rx_chain[i], NULL) == ENOBUFS) 1374 return(ENOBUFS); 1375 if (i == (WB_RX_LIST_CNT - 1)) { 1376 cd->wb_rx_chain[i].wb_nextdesc = &cd->wb_rx_chain[0]; 1377 ld->wb_rx_list[i].wb_next = 1378 vtophys(&ld->wb_rx_list[0]); 1379 } else { 1380 cd->wb_rx_chain[i].wb_nextdesc = 1381 &cd->wb_rx_chain[i + 1]; 1382 ld->wb_rx_list[i].wb_next = 1383 vtophys(&ld->wb_rx_list[i + 1]); 1384 } 1385 } 1386 1387 cd->wb_rx_head = &cd->wb_rx_chain[0]; 1388 1389 return(0); 1390} 1391 1392/* 1393 * Initialize an RX descriptor and attach an MBUF cluster. 1394 */ 1395static int wb_newbuf(sc, c, m) 1396 struct wb_softc *sc; 1397 struct wb_chain_onefrag *c; 1398 struct mbuf *m; 1399{ 1400 struct mbuf *m_new = NULL; 1401 1402 if (m == NULL) { 1403 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1404 if (m_new == NULL) { 1405 printf("wb%d: no memory for rx " 1406 "list -- packet dropped!\n", sc->wb_unit); 1407 return(ENOBUFS); 1408 } 1409 1410 MCLGET(m_new, M_DONTWAIT); 1411 if (!(m_new->m_flags & M_EXT)) { 1412 printf("wb%d: no memory for rx " 1413 "list -- packet dropped!\n", sc->wb_unit); 1414 m_freem(m_new); 1415 return(ENOBUFS); 1416 } 1417 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 1418 } else { 1419 m_new = m; 1420 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 1421 m_new->m_data = m_new->m_ext.ext_buf; 1422 } 1423 1424 m_adj(m_new, sizeof(u_int64_t)); 1425 1426 c->wb_mbuf = m_new; 1427 c->wb_ptr->wb_data = vtophys(mtod(m_new, caddr_t)); 1428 c->wb_ptr->wb_ctl = WB_RXCTL_RLINK | (MCLBYTES - 1); 1429 c->wb_ptr->wb_status = WB_RXSTAT; 1430 1431 return(0); 1432} 1433 1434/* 1435 * A frame has been uploaded: pass the resulting mbuf chain up to 1436 * the higher level protocols. 1437 */ 1438static void wb_rxeof(sc) 1439 struct wb_softc *sc; 1440{ 1441 struct ether_header *eh; 1442 struct mbuf *m; 1443 struct ifnet *ifp; 1444 struct wb_chain_onefrag *cur_rx; 1445 int total_len = 0; 1446 u_int32_t rxstat; 1447 1448 ifp = &sc->arpcom.ac_if; 1449 1450 while(!((rxstat = sc->wb_cdata.wb_rx_head->wb_ptr->wb_status) & 1451 WB_RXSTAT_OWN)) { 1452 struct mbuf *m0 = NULL; 1453 1454 cur_rx = sc->wb_cdata.wb_rx_head; 1455 sc->wb_cdata.wb_rx_head = cur_rx->wb_nextdesc; 1456 m = cur_rx->wb_mbuf; 1457 1458 if ((rxstat & WB_RXSTAT_MIIERR) 1459 || WB_RXBYTES(cur_rx->wb_ptr->wb_status) == 0) { 1460 ifp->if_ierrors++; 1461 wb_reset(sc); 1462 printf("wb%x: receiver babbling: possible chip " 1463 "bug, forcing reset\n", sc->wb_unit); 1464 ifp->if_flags |= IFF_OACTIVE; 1465 ifp->if_timer = 2; 1466 return; 1467 } 1468 1469 if (rxstat & WB_RXSTAT_RXERR) { 1470 ifp->if_ierrors++; 1471 wb_newbuf(sc, cur_rx, m); 1472 continue; 1473 } 1474 1475 /* No errors; receive the packet. */ 1476 total_len = WB_RXBYTES(cur_rx->wb_ptr->wb_status); 1477 1478 /* 1479 * XXX The Winbond chip includes the CRC with every 1480 * received frame, and there's no way to turn this 1481 * behavior off (at least, I can't find anything in 1482 * the manual that explains how to do it) so we have 1483 * to trim off the CRC manually. 1484 */ 1485 total_len -= ETHER_CRC_LEN; 1486 1487 m0 = m_devget(mtod(m, char *) - ETHER_ALIGN, 1488 total_len + ETHER_ALIGN, 0, ifp, NULL); 1489 wb_newbuf(sc, cur_rx, m); 1490 if (m0 == NULL) { 1491 ifp->if_ierrors++; 1492 continue; 1493 } 1494 m_adj(m0, ETHER_ALIGN); 1495 m = m0; 1496 1497 ifp->if_ipackets++; 1498 eh = mtod(m, struct ether_header *); 1499 1500#ifdef BRIDGE 1501 if (do_bridge) { 1502 struct ifnet *bdg_ifp; 1503 bdg_ifp = bridge_in(m); 1504 if (bdg_ifp != BDG_LOCAL && bdg_ifp != BDG_DROP) 1505 bdg_forward(&m, bdg_ifp); 1506 if (((bdg_ifp != BDG_LOCAL) && (bdg_ifp != BDG_BCAST) && 1507 (bdg_ifp != BDG_MCAST)) || bdg_ifp == BDG_DROP) { 1508 m_freem(m); 1509 continue; 1510 } 1511 } 1512#endif 1513 1514#if NBPF > 0 1515 /* 1516 * Handle BPF listeners. Let the BPF user see the packet, but 1517 * don't pass it up to the ether_input() layer unless it's 1518 * a broadcast packet, multicast packet, matches our ethernet 1519 * address or the interface is in promiscuous mode. 1520 */ 1521 if (ifp->if_bpf) { 1522 bpf_mtap(ifp, m); 1523 if (ifp->if_flags & IFF_PROMISC && 1524 (bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, 1525 ETHER_ADDR_LEN) && 1526 (eh->ether_dhost[0] & 1) == 0)) { 1527 m_freem(m); 1528 continue; 1529 } 1530 } 1531#endif 1532 /* Remove header from mbuf and pass it on. */ 1533 m_adj(m, sizeof(struct ether_header)); 1534 ether_input(ifp, eh, m); 1535 } 1536 1537 return; 1538} 1539 1540void wb_rxeoc(sc) 1541 struct wb_softc *sc; 1542{ 1543 wb_rxeof(sc); 1544 1545 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_RX_ON); 1546 CSR_WRITE_4(sc, WB_RXADDR, vtophys(&sc->wb_ldata->wb_rx_list[0])); 1547 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_RX_ON); 1548 if (CSR_READ_4(sc, WB_ISR) & WB_RXSTATE_SUSPEND) 1549 CSR_WRITE_4(sc, WB_RXSTART, 0xFFFFFFFF); 1550 1551 return; 1552} 1553 1554/* 1555 * A frame was downloaded to the chip. It's safe for us to clean up 1556 * the list buffers. 1557 */ 1558static void wb_txeof(sc) 1559 struct wb_softc *sc; 1560{ 1561 struct wb_chain *cur_tx; 1562 struct ifnet *ifp; 1563 1564 ifp = &sc->arpcom.ac_if; 1565 1566 /* Clear the timeout timer. */ 1567 ifp->if_timer = 0; 1568 1569 if (sc->wb_cdata.wb_tx_head == NULL) 1570 return; 1571 1572 /* 1573 * Go through our tx list and free mbufs for those 1574 * frames that have been transmitted. 1575 */ 1576 while(sc->wb_cdata.wb_tx_head->wb_mbuf != NULL) { 1577 u_int32_t txstat; 1578 1579 cur_tx = sc->wb_cdata.wb_tx_head; 1580 txstat = WB_TXSTATUS(cur_tx); 1581 1582 if ((txstat & WB_TXSTAT_OWN) || txstat == WB_UNSENT) 1583 break; 1584 1585 if (txstat & WB_TXSTAT_TXERR) { 1586 ifp->if_oerrors++; 1587 if (txstat & WB_TXSTAT_ABORT) 1588 ifp->if_collisions++; 1589 if (txstat & WB_TXSTAT_LATECOLL) 1590 ifp->if_collisions++; 1591 } 1592 1593 ifp->if_collisions += (txstat & WB_TXSTAT_COLLCNT) >> 3; 1594 1595 ifp->if_opackets++; 1596 m_freem(cur_tx->wb_mbuf); 1597 cur_tx->wb_mbuf = NULL; 1598 1599 if (sc->wb_cdata.wb_tx_head == sc->wb_cdata.wb_tx_tail) { 1600 sc->wb_cdata.wb_tx_head = NULL; 1601 sc->wb_cdata.wb_tx_tail = NULL; 1602 break; 1603 } 1604 1605 sc->wb_cdata.wb_tx_head = cur_tx->wb_nextdesc; 1606 } 1607 1608 return; 1609} 1610 1611/* 1612 * TX 'end of channel' interrupt handler. 1613 */ 1614static void wb_txeoc(sc) 1615 struct wb_softc *sc; 1616{ 1617 struct ifnet *ifp; 1618 1619 ifp = &sc->arpcom.ac_if; 1620 1621 ifp->if_timer = 0; 1622 1623 if (sc->wb_cdata.wb_tx_head == NULL) { 1624 ifp->if_flags &= ~IFF_OACTIVE; 1625 sc->wb_cdata.wb_tx_tail = NULL; 1626 if (sc->wb_want_auto) 1627 wb_autoneg_mii(sc, WB_FLAG_SCHEDDELAY, 1); 1628 } else { 1629 if (WB_TXOWN(sc->wb_cdata.wb_tx_head) == WB_UNSENT) { 1630 WB_TXOWN(sc->wb_cdata.wb_tx_head) = WB_TXSTAT_OWN; 1631 ifp->if_timer = 5; 1632 CSR_WRITE_4(sc, WB_TXSTART, 0xFFFFFFFF); 1633 } 1634 } 1635 1636 return; 1637} 1638 1639static void wb_intr(arg) 1640 void *arg; 1641{ 1642 struct wb_softc *sc; 1643 struct ifnet *ifp; 1644 u_int32_t status; 1645 1646 sc = arg; 1647 ifp = &sc->arpcom.ac_if; 1648 1649 if (!(ifp->if_flags & IFF_UP)) 1650 return; 1651 1652 /* Disable interrupts. */ 1653 CSR_WRITE_4(sc, WB_IMR, 0x00000000); 1654 1655 for (;;) { 1656 1657 status = CSR_READ_4(sc, WB_ISR); 1658 if (status) 1659 CSR_WRITE_4(sc, WB_ISR, status); 1660 1661 if ((status & WB_INTRS) == 0) 1662 break; 1663 1664 if (status & WB_ISR_RX_OK) 1665 wb_rxeof(sc); 1666 1667 if (status & WB_ISR_RX_IDLE) 1668 wb_rxeoc(sc); 1669 1670 if ((status & WB_ISR_RX_NOBUF) || (status & WB_ISR_RX_ERR)) { 1671 ifp->if_ierrors++; 1672#ifdef foo 1673 wb_stop(sc); 1674 wb_reset(sc); 1675 wb_init(sc); 1676#endif 1677 } 1678 1679 if (status & WB_ISR_TX_OK) 1680 wb_txeof(sc); 1681 1682 if (status & WB_ISR_TX_NOBUF) 1683 wb_txeoc(sc); 1684 1685 if (status & WB_ISR_TX_IDLE) { 1686 wb_txeof(sc); 1687 if (sc->wb_cdata.wb_tx_head != NULL) { 1688 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_TX_ON); 1689 CSR_WRITE_4(sc, WB_TXSTART, 0xFFFFFFFF); 1690 } 1691 } 1692 1693 if (status & WB_ISR_TX_UNDERRUN) { 1694 ifp->if_oerrors++; 1695 wb_txeof(sc); 1696 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_TX_ON); 1697 /* Jack up TX threshold */ 1698 sc->wb_txthresh += WB_TXTHRESH_CHUNK; 1699 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_TX_THRESH); 1700 WB_SETBIT(sc, WB_NETCFG, WB_TXTHRESH(sc->wb_txthresh)); 1701 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_TX_ON); 1702 } 1703 1704 if (status & WB_ISR_BUS_ERR) { 1705 wb_reset(sc); 1706 wb_init(sc); 1707 } 1708 1709 } 1710 1711 /* Re-enable interrupts. */ 1712 CSR_WRITE_4(sc, WB_IMR, WB_INTRS); 1713 1714 if (ifp->if_snd.ifq_head != NULL) { 1715 wb_start(ifp); 1716 } 1717 1718 return; 1719} 1720 1721/* 1722 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1723 * pointers to the fragment pointers. 1724 */ 1725static int wb_encap(sc, c, m_head) 1726 struct wb_softc *sc; 1727 struct wb_chain *c; 1728 struct mbuf *m_head; 1729{ 1730 int frag = 0; 1731 struct wb_desc *f = NULL; 1732 int total_len; 1733 struct mbuf *m; 1734 1735 /* 1736 * Start packing the mbufs in this chain into 1737 * the fragment pointers. Stop when we run out 1738 * of fragments or hit the end of the mbuf chain. 1739 */ 1740 m = m_head; 1741 total_len = 0; 1742 1743 for (m = m_head, frag = 0; m != NULL; m = m->m_next) { 1744 if (m->m_len != 0) { 1745 if (frag == WB_MAXFRAGS) 1746 break; 1747 total_len += m->m_len; 1748 f = &c->wb_ptr->wb_frag[frag]; 1749 f->wb_ctl = WB_TXCTL_TLINK | m->m_len; 1750 if (frag == 0) { 1751 f->wb_ctl |= WB_TXCTL_FIRSTFRAG; 1752 f->wb_status = 0; 1753 } else 1754 f->wb_status = WB_TXSTAT_OWN; 1755 f->wb_next = vtophys(&c->wb_ptr->wb_frag[frag + 1]); 1756 f->wb_data = vtophys(mtod(m, vm_offset_t)); 1757 frag++; 1758 } 1759 } 1760 1761 /* 1762 * Handle special case: we used up all 16 fragments, 1763 * but we have more mbufs left in the chain. Copy the 1764 * data into an mbuf cluster. Note that we don't 1765 * bother clearing the values in the other fragment 1766 * pointers/counters; it wouldn't gain us anything, 1767 * and would waste cycles. 1768 */ 1769 if (m != NULL) { 1770 struct mbuf *m_new = NULL; 1771 1772 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1773 if (m_new == NULL) { 1774 printf("wb%d: no memory for tx list", sc->wb_unit); 1775 return(1); 1776 } 1777 if (m_head->m_pkthdr.len > MHLEN) { 1778 MCLGET(m_new, M_DONTWAIT); 1779 if (!(m_new->m_flags & M_EXT)) { 1780 m_freem(m_new); 1781 printf("wb%d: no memory for tx list", 1782 sc->wb_unit); 1783 return(1); 1784 } 1785 } 1786 m_copydata(m_head, 0, m_head->m_pkthdr.len, 1787 mtod(m_new, caddr_t)); 1788 m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len; 1789 m_freem(m_head); 1790 m_head = m_new; 1791 f = &c->wb_ptr->wb_frag[0]; 1792 f->wb_status = 0; 1793 f->wb_data = vtophys(mtod(m_new, caddr_t)); 1794 f->wb_ctl = total_len = m_new->m_len; 1795 f->wb_ctl |= WB_TXCTL_TLINK|WB_TXCTL_FIRSTFRAG; 1796 frag = 1; 1797 } 1798 1799 if (total_len < WB_MIN_FRAMELEN) { 1800 f = &c->wb_ptr->wb_frag[frag]; 1801 f->wb_ctl = WB_MIN_FRAMELEN - total_len; 1802 f->wb_data = vtophys(&sc->wb_cdata.wb_pad); 1803 f->wb_ctl |= WB_TXCTL_TLINK; 1804 f->wb_status = WB_TXSTAT_OWN; 1805 frag++; 1806 } 1807 1808 c->wb_mbuf = m_head; 1809 c->wb_lastdesc = frag - 1; 1810 WB_TXCTL(c) |= WB_TXCTL_LASTFRAG; 1811 WB_TXNEXT(c) = vtophys(&c->wb_nextdesc->wb_ptr->wb_frag[0]); 1812 1813 return(0); 1814} 1815 1816/* 1817 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1818 * to the mbuf data regions directly in the transmit lists. We also save a 1819 * copy of the pointers since the transmit list fragment pointers are 1820 * physical addresses. 1821 */ 1822 1823static void wb_start(ifp) 1824 struct ifnet *ifp; 1825{ 1826 struct wb_softc *sc; 1827 struct mbuf *m_head = NULL; 1828 struct wb_chain *cur_tx = NULL, *start_tx; 1829 1830 sc = ifp->if_softc; 1831 1832 if (sc->wb_autoneg) { 1833 sc->wb_tx_pend = 1; 1834 return; 1835 } 1836 1837 /* 1838 * Check for an available queue slot. If there are none, 1839 * punt. 1840 */ 1841 if (sc->wb_cdata.wb_tx_free->wb_mbuf != NULL) { 1842 ifp->if_flags |= IFF_OACTIVE; 1843 return; 1844 } 1845 1846 start_tx = sc->wb_cdata.wb_tx_free; 1847 1848 while(sc->wb_cdata.wb_tx_free->wb_mbuf == NULL) { 1849 IF_DEQUEUE(&ifp->if_snd, m_head); 1850 if (m_head == NULL) 1851 break; 1852 1853 /* Pick a descriptor off the free list. */ 1854 cur_tx = sc->wb_cdata.wb_tx_free; 1855 sc->wb_cdata.wb_tx_free = cur_tx->wb_nextdesc; 1856 1857 /* Pack the data into the descriptor. */ 1858 wb_encap(sc, cur_tx, m_head); 1859 1860 if (cur_tx != start_tx) 1861 WB_TXOWN(cur_tx) = WB_TXSTAT_OWN; 1862 1863#if NBPF > 0 1864 /* 1865 * If there's a BPF listener, bounce a copy of this frame 1866 * to him. 1867 */ 1868 if (ifp->if_bpf) 1869 bpf_mtap(ifp, cur_tx->wb_mbuf); 1870#endif 1871 } 1872 1873 /* 1874 * If there are no packets queued, bail. 1875 */ 1876 if (cur_tx == NULL) 1877 return; 1878 1879 /* 1880 * Place the request for the upload interrupt 1881 * in the last descriptor in the chain. This way, if 1882 * we're chaining several packets at once, we'll only 1883 * get an interupt once for the whole chain rather than 1884 * once for each packet. 1885 */ 1886 WB_TXCTL(cur_tx) |= WB_TXCTL_FINT; 1887 cur_tx->wb_ptr->wb_frag[0].wb_ctl |= WB_TXCTL_FINT; 1888 sc->wb_cdata.wb_tx_tail = cur_tx; 1889 1890 if (sc->wb_cdata.wb_tx_head == NULL) { 1891 sc->wb_cdata.wb_tx_head = start_tx; 1892 WB_TXOWN(start_tx) = WB_TXSTAT_OWN; 1893 CSR_WRITE_4(sc, WB_TXSTART, 0xFFFFFFFF); 1894 } else { 1895 /* 1896 * We need to distinguish between the case where 1897 * the own bit is clear because the chip cleared it 1898 * and where the own bit is clear because we haven't 1899 * set it yet. The magic value WB_UNSET is just some 1900 * ramdomly chosen number which doesn't have the own 1901 * bit set. When we actually transmit the frame, the 1902 * status word will have _only_ the own bit set, so 1903 * the txeoc handler will be able to tell if it needs 1904 * to initiate another transmission to flush out pending 1905 * frames. 1906 */ 1907 WB_TXOWN(start_tx) = WB_UNSENT; 1908 } 1909 1910 /* 1911 * Set a timeout in case the chip goes out to lunch. 1912 */ 1913 ifp->if_timer = 5; 1914 1915 return; 1916} 1917 1918static void wb_init(xsc) 1919 void *xsc; 1920{ 1921 struct wb_softc *sc = xsc; 1922 struct ifnet *ifp = &sc->arpcom.ac_if; 1923 int s, i; 1924 u_int16_t phy_bmcr = 0; 1925 1926 if (sc->wb_autoneg) 1927 return; 1928 1929 s = splimp(); 1930 1931 if (sc->wb_pinfo != NULL) 1932 phy_bmcr = wb_phy_readreg(sc, PHY_BMCR); 1933 1934 /* 1935 * Cancel pending I/O and free all RX/TX buffers. 1936 */ 1937 wb_stop(sc); 1938 wb_reset(sc); 1939 1940 sc->wb_txthresh = WB_TXTHRESH_INIT; 1941 1942 /* 1943 * Set cache alignment and burst length. 1944 */ 1945 CSR_WRITE_4(sc, WB_BUSCTL, WB_BUSCTL_CONFIG); 1946 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_TX_THRESH); 1947 WB_SETBIT(sc, WB_NETCFG, WB_TXTHRESH(sc->wb_txthresh)); 1948 1949 /* This doesn't tend to work too well at 100Mbps. */ 1950 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_TX_EARLY_ON); 1951 1952 wb_setcfg(sc, phy_bmcr); 1953 1954 /* Init our MAC address */ 1955 for (i = 0; i < ETHER_ADDR_LEN; i++) { 1956 CSR_WRITE_1(sc, WB_NODE0 + i, sc->arpcom.ac_enaddr[i]); 1957 } 1958 1959 /* Init circular RX list. */ 1960 if (wb_list_rx_init(sc) == ENOBUFS) { 1961 printf("wb%d: initialization failed: no " 1962 "memory for rx buffers\n", sc->wb_unit); 1963 wb_stop(sc); 1964 (void)splx(s); 1965 return; 1966 } 1967 1968 /* Init TX descriptors. */ 1969 wb_list_tx_init(sc); 1970 1971 /* If we want promiscuous mode, set the allframes bit. */ 1972 if (ifp->if_flags & IFF_PROMISC) { 1973 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_RX_ALLPHYS); 1974 } else { 1975 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_RX_ALLPHYS); 1976 } 1977 1978 /* 1979 * Set capture broadcast bit to capture broadcast frames. 1980 */ 1981 if (ifp->if_flags & IFF_BROADCAST) { 1982 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_RX_BROAD); 1983 } else { 1984 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_RX_BROAD); 1985 } 1986 1987 /* 1988 * Program the multicast filter, if necessary. 1989 */ 1990 wb_setmulti(sc); 1991 1992 /* 1993 * Load the address of the RX list. 1994 */ 1995 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_RX_ON); 1996 CSR_WRITE_4(sc, WB_RXADDR, vtophys(&sc->wb_ldata->wb_rx_list[0])); 1997 1998 /* 1999 * Enable interrupts. 2000 */ 2001 CSR_WRITE_4(sc, WB_IMR, WB_INTRS); 2002 CSR_WRITE_4(sc, WB_ISR, 0xFFFFFFFF); 2003 2004 /* Enable receiver and transmitter. */ 2005 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_RX_ON); 2006 CSR_WRITE_4(sc, WB_RXSTART, 0xFFFFFFFF); 2007 2008 WB_CLRBIT(sc, WB_NETCFG, WB_NETCFG_TX_ON); 2009 CSR_WRITE_4(sc, WB_TXADDR, vtophys(&sc->wb_ldata->wb_tx_list[0])); 2010 WB_SETBIT(sc, WB_NETCFG, WB_NETCFG_TX_ON); 2011 2012 /* Restore state of BMCR */ 2013 if (sc->wb_pinfo != NULL) 2014 wb_phy_writereg(sc, PHY_BMCR, phy_bmcr); 2015 2016 ifp->if_flags |= IFF_RUNNING; 2017 ifp->if_flags &= ~IFF_OACTIVE; 2018 2019 (void)splx(s); 2020 2021 return; 2022} 2023 2024/* 2025 * Set media options. 2026 */ 2027static int wb_ifmedia_upd(ifp) 2028 struct ifnet *ifp; 2029{ 2030 struct wb_softc *sc; 2031 struct ifmedia *ifm; 2032 2033 sc = ifp->if_softc; 2034 ifm = &sc->ifmedia; 2035 2036 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 2037 return(EINVAL); 2038 2039 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 2040 wb_autoneg_mii(sc, WB_FLAG_SCHEDDELAY, 1); 2041 else 2042 wb_setmode_mii(sc, ifm->ifm_media); 2043 2044 return(0); 2045} 2046 2047/* 2048 * Report current media status. 2049 */ 2050static void wb_ifmedia_sts(ifp, ifmr) 2051 struct ifnet *ifp; 2052 struct ifmediareq *ifmr; 2053{ 2054 struct wb_softc *sc; 2055 u_int16_t advert = 0, ability = 0; 2056 2057 sc = ifp->if_softc; 2058 2059 ifmr->ifm_active = IFM_ETHER; 2060 2061 if (!(wb_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_AUTONEGENBL)) { 2062 if (wb_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_SPEEDSEL) 2063 ifmr->ifm_active = IFM_ETHER|IFM_100_TX; 2064 else 2065 ifmr->ifm_active = IFM_ETHER|IFM_10_T; 2066 if (wb_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_DUPLEX) 2067 ifmr->ifm_active |= IFM_FDX; 2068 else 2069 ifmr->ifm_active |= IFM_HDX; 2070 return; 2071 } 2072 2073 ability = wb_phy_readreg(sc, PHY_LPAR); 2074 advert = wb_phy_readreg(sc, PHY_ANAR); 2075 if (advert & PHY_ANAR_100BT4 && 2076 ability & PHY_ANAR_100BT4) { 2077 ifmr->ifm_active = IFM_ETHER|IFM_100_T4; 2078 } else if (advert & PHY_ANAR_100BTXFULL && 2079 ability & PHY_ANAR_100BTXFULL) { 2080 ifmr->ifm_active = IFM_ETHER|IFM_100_TX|IFM_FDX; 2081 } else if (advert & PHY_ANAR_100BTXHALF && 2082 ability & PHY_ANAR_100BTXHALF) { 2083 ifmr->ifm_active = IFM_ETHER|IFM_100_TX|IFM_HDX; 2084 } else if (advert & PHY_ANAR_10BTFULL && 2085 ability & PHY_ANAR_10BTFULL) { 2086 ifmr->ifm_active = IFM_ETHER|IFM_10_T|IFM_FDX; 2087 } else if (advert & PHY_ANAR_10BTHALF && 2088 ability & PHY_ANAR_10BTHALF) { 2089 ifmr->ifm_active = IFM_ETHER|IFM_10_T|IFM_HDX; 2090 } 2091 2092 return; 2093} 2094 2095static int wb_ioctl(ifp, command, data) 2096 struct ifnet *ifp; 2097 u_long command; 2098 caddr_t data; 2099{ 2100 struct wb_softc *sc = ifp->if_softc; 2101 struct ifreq *ifr = (struct ifreq *) data; 2102 int s, error = 0; 2103 2104 s = splimp(); 2105 2106 switch(command) { 2107 case SIOCSIFADDR: 2108 case SIOCGIFADDR: 2109 case SIOCSIFMTU: 2110 error = ether_ioctl(ifp, command, data); 2111 break; 2112 case SIOCSIFFLAGS: 2113 if (ifp->if_flags & IFF_UP) { 2114 wb_init(sc); 2115 } else { 2116 if (ifp->if_flags & IFF_RUNNING) 2117 wb_stop(sc); 2118 } 2119 error = 0; 2120 break; 2121 case SIOCADDMULTI: 2122 case SIOCDELMULTI: 2123 wb_setmulti(sc); 2124 error = 0; 2125 break; 2126 case SIOCGIFMEDIA: 2127 case SIOCSIFMEDIA: 2128 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command); 2129 break; 2130 default: 2131 error = EINVAL; 2132 break; 2133 } 2134 2135 (void)splx(s); 2136 2137 return(error); 2138} 2139 2140static void wb_watchdog(ifp) 2141 struct ifnet *ifp; 2142{ 2143 struct wb_softc *sc; 2144 2145 sc = ifp->if_softc; 2146 2147 if (sc->wb_autoneg) { 2148 wb_autoneg_mii(sc, WB_FLAG_DELAYTIMEO, 1); 2149 if (!(ifp->if_flags & IFF_UP)) 2150 wb_stop(sc); 2151 return; 2152 } 2153 2154 ifp->if_oerrors++; 2155 printf("wb%d: watchdog timeout\n", sc->wb_unit); 2156 2157 if (!(wb_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT)) 2158 printf("wb%d: no carrier - transceiver cable problem?\n", 2159 sc->wb_unit); 2160 2161 wb_stop(sc); 2162 wb_reset(sc); 2163 wb_init(sc); 2164 2165 if (ifp->if_snd.ifq_head != NULL) 2166 wb_start(ifp); 2167 2168 return; 2169} 2170 2171/* 2172 * Stop the adapter and free any mbufs allocated to the 2173 * RX and TX lists. 2174 */ 2175static void wb_stop(sc) 2176 struct wb_softc *sc; 2177{ 2178 register int i; 2179 struct ifnet *ifp; 2180 2181 ifp = &sc->arpcom.ac_if; 2182 ifp->if_timer = 0; 2183 2184 WB_CLRBIT(sc, WB_NETCFG, (WB_NETCFG_RX_ON|WB_NETCFG_TX_ON)); 2185 CSR_WRITE_4(sc, WB_IMR, 0x00000000); 2186 CSR_WRITE_4(sc, WB_TXADDR, 0x00000000); 2187 CSR_WRITE_4(sc, WB_RXADDR, 0x00000000); 2188 2189 /* 2190 * Free data in the RX lists. 2191 */ 2192 for (i = 0; i < WB_RX_LIST_CNT; i++) { 2193 if (sc->wb_cdata.wb_rx_chain[i].wb_mbuf != NULL) { 2194 m_freem(sc->wb_cdata.wb_rx_chain[i].wb_mbuf); 2195 sc->wb_cdata.wb_rx_chain[i].wb_mbuf = NULL; 2196 } 2197 } 2198 bzero((char *)&sc->wb_ldata->wb_rx_list, 2199 sizeof(sc->wb_ldata->wb_rx_list)); 2200 2201 /* 2202 * Free the TX list buffers. 2203 */ 2204 for (i = 0; i < WB_TX_LIST_CNT; i++) { 2205 if (sc->wb_cdata.wb_tx_chain[i].wb_mbuf != NULL) { 2206 m_freem(sc->wb_cdata.wb_tx_chain[i].wb_mbuf); 2207 sc->wb_cdata.wb_tx_chain[i].wb_mbuf = NULL; 2208 } 2209 } 2210 2211 bzero((char *)&sc->wb_ldata->wb_tx_list, 2212 sizeof(sc->wb_ldata->wb_tx_list)); 2213 2214 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2215 2216 return; 2217} 2218 2219/* 2220 * Stop all chip I/O so that the kernel's probe routines don't 2221 * get confused by errant DMAs when rebooting. 2222 */ 2223static void wb_shutdown(dev) 2224 device_t dev; 2225{ 2226 struct wb_softc *sc; 2227 2228 sc = device_get_softc(dev); 2229 wb_stop(sc); 2230 2231 return; 2232} 2233