if_nge.c revision 128130
1/* 2 * Copyright (c) 2001 Wind River Systems 3 * Copyright (c) 1997, 1998, 1999, 2000, 2001 4 * Bill Paul <wpaul@bsdi.com>. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Bill Paul. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 31 * THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: head/sys/dev/nge/if_nge.c 128130 2004-04-11 18:28:14Z ru $"); 36 37/* 38 * National Semiconductor DP83820/DP83821 gigabit ethernet driver 39 * for FreeBSD. Datasheets are available from: 40 * 41 * http://www.national.com/ds/DP/DP83820.pdf 42 * http://www.national.com/ds/DP/DP83821.pdf 43 * 44 * These chips are used on several low cost gigabit ethernet NICs 45 * sold by D-Link, Addtron, SMC and Asante. Both parts are 46 * virtually the same, except the 83820 is a 64-bit/32-bit part, 47 * while the 83821 is 32-bit only. 48 * 49 * Many cards also use National gigE transceivers, such as the 50 * DP83891, DP83861 and DP83862 gigPHYTER parts. The DP83861 datasheet 51 * contains a full register description that applies to all of these 52 * components: 53 * 54 * http://www.national.com/ds/DP/DP83861.pdf 55 * 56 * Written by Bill Paul <wpaul@bsdi.com> 57 * BSDi Open Source Solutions 58 */ 59 60/* 61 * The NatSemi DP83820 and 83821 controllers are enhanced versions 62 * of the NatSemi MacPHYTER 10/100 devices. They support 10, 100 63 * and 1000Mbps speeds with 1000baseX (ten bit interface), MII and GMII 64 * ports. Other features include 8K TX FIFO and 32K RX FIFO, TCP/IP 65 * hardware checksum offload (IPv4 only), VLAN tagging and filtering, 66 * priority TX and RX queues, a 2048 bit multicast hash filter, 4 RX pattern 67 * matching buffers, one perfect address filter buffer and interrupt 68 * moderation. The 83820 supports both 64-bit and 32-bit addressing 69 * and data transfers: the 64-bit support can be toggled on or off 70 * via software. This affects the size of certain fields in the DMA 71 * descriptors. 72 * 73 * There are two bugs/misfeatures in the 83820/83821 that I have 74 * discovered so far: 75 * 76 * - Receive buffers must be aligned on 64-bit boundaries, which means 77 * you must resort to copying data in order to fix up the payload 78 * alignment. 79 * 80 * - In order to transmit jumbo frames larger than 8170 bytes, you have 81 * to turn off transmit checksum offloading, because the chip can't 82 * compute the checksum on an outgoing frame unless it fits entirely 83 * within the TX FIFO, which is only 8192 bytes in size. If you have 84 * TX checksum offload enabled and you transmit attempt to transmit a 85 * frame larger than 8170 bytes, the transmitter will wedge. 86 * 87 * To work around the latter problem, TX checksum offload is disabled 88 * if the user selects an MTU larger than 8152 (8170 - 18). 89 */ 90 91#include <sys/param.h> 92#include <sys/systm.h> 93#include <sys/sockio.h> 94#include <sys/mbuf.h> 95#include <sys/malloc.h> 96#include <sys/kernel.h> 97#include <sys/socket.h> 98 99#include <net/if.h> 100#include <net/if_arp.h> 101#include <net/ethernet.h> 102#include <net/if_dl.h> 103#include <net/if_media.h> 104#include <net/if_types.h> 105#include <net/if_vlan_var.h> 106 107#include <net/bpf.h> 108 109#include <vm/vm.h> /* for vtophys */ 110#include <vm/pmap.h> /* for vtophys */ 111#include <machine/clock.h> /* for DELAY */ 112#include <machine/bus_pio.h> 113#include <machine/bus_memio.h> 114#include <machine/bus.h> 115#include <machine/resource.h> 116#include <sys/bus.h> 117#include <sys/rman.h> 118 119#include <dev/mii/mii.h> 120#include <dev/mii/miivar.h> 121 122#include <dev/pci/pcireg.h> 123#include <dev/pci/pcivar.h> 124 125#define NGE_USEIOSPACE 126 127#include <dev/nge/if_ngereg.h> 128 129MODULE_DEPEND(nge, pci, 1, 1, 1); 130MODULE_DEPEND(nge, ether, 1, 1, 1); 131MODULE_DEPEND(nge, miibus, 1, 1, 1); 132 133/* "controller miibus0" required. See GENERIC if you get errors here. */ 134#include "miibus_if.h" 135 136#define NGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 137 138/* 139 * Various supported device vendors/types and their names. 140 */ 141static struct nge_type nge_devs[] = { 142 { NGE_VENDORID, NGE_DEVICEID, 143 "National Semiconductor Gigabit Ethernet" }, 144 { 0, 0, NULL } 145}; 146 147static int nge_probe(device_t); 148static int nge_attach(device_t); 149static int nge_detach(device_t); 150 151static int nge_alloc_jumbo_mem(struct nge_softc *); 152static void nge_free_jumbo_mem(struct nge_softc *); 153static void *nge_jalloc(struct nge_softc *); 154static void nge_jfree(void *, void *); 155 156static int nge_newbuf(struct nge_softc *, struct nge_desc *, struct mbuf *); 157static int nge_encap(struct nge_softc *, struct mbuf *, u_int32_t *); 158static void nge_rxeof(struct nge_softc *); 159static void nge_txeof(struct nge_softc *); 160static void nge_intr(void *); 161static void nge_tick(void *); 162static void nge_start(struct ifnet *); 163static int nge_ioctl(struct ifnet *, u_long, caddr_t); 164static void nge_init(void *); 165static void nge_stop(struct nge_softc *); 166static void nge_watchdog(struct ifnet *); 167static void nge_shutdown(device_t); 168static int nge_ifmedia_upd(struct ifnet *); 169static void nge_ifmedia_sts(struct ifnet *, struct ifmediareq *); 170 171static void nge_delay(struct nge_softc *); 172static void nge_eeprom_idle(struct nge_softc *); 173static void nge_eeprom_putbyte(struct nge_softc *, int); 174static void nge_eeprom_getword(struct nge_softc *, int, u_int16_t *); 175static void nge_read_eeprom(struct nge_softc *, caddr_t, int, int, int); 176 177static void nge_mii_sync(struct nge_softc *); 178static void nge_mii_send(struct nge_softc *, u_int32_t, int); 179static int nge_mii_readreg(struct nge_softc *, struct nge_mii_frame *); 180static int nge_mii_writereg(struct nge_softc *, struct nge_mii_frame *); 181 182static int nge_miibus_readreg(device_t, int, int); 183static int nge_miibus_writereg(device_t, int, int, int); 184static void nge_miibus_statchg(device_t); 185 186static void nge_setmulti(struct nge_softc *); 187static uint32_t nge_mchash(const uint8_t *); 188static void nge_reset(struct nge_softc *); 189static int nge_list_rx_init(struct nge_softc *); 190static int nge_list_tx_init(struct nge_softc *); 191 192#ifdef NGE_USEIOSPACE 193#define NGE_RES SYS_RES_IOPORT 194#define NGE_RID NGE_PCI_LOIO 195#else 196#define NGE_RES SYS_RES_MEMORY 197#define NGE_RID NGE_PCI_LOMEM 198#endif 199 200static device_method_t nge_methods[] = { 201 /* Device interface */ 202 DEVMETHOD(device_probe, nge_probe), 203 DEVMETHOD(device_attach, nge_attach), 204 DEVMETHOD(device_detach, nge_detach), 205 DEVMETHOD(device_shutdown, nge_shutdown), 206 207 /* bus interface */ 208 DEVMETHOD(bus_print_child, bus_generic_print_child), 209 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 210 211 /* MII interface */ 212 DEVMETHOD(miibus_readreg, nge_miibus_readreg), 213 DEVMETHOD(miibus_writereg, nge_miibus_writereg), 214 DEVMETHOD(miibus_statchg, nge_miibus_statchg), 215 216 { 0, 0 } 217}; 218 219static driver_t nge_driver = { 220 "nge", 221 nge_methods, 222 sizeof(struct nge_softc) 223}; 224 225static devclass_t nge_devclass; 226 227DRIVER_MODULE(nge, pci, nge_driver, nge_devclass, 0, 0); 228DRIVER_MODULE(miibus, nge, miibus_driver, miibus_devclass, 0, 0); 229 230#define NGE_SETBIT(sc, reg, x) \ 231 CSR_WRITE_4(sc, reg, \ 232 CSR_READ_4(sc, reg) | (x)) 233 234#define NGE_CLRBIT(sc, reg, x) \ 235 CSR_WRITE_4(sc, reg, \ 236 CSR_READ_4(sc, reg) & ~(x)) 237 238#define SIO_SET(x) \ 239 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) | (x)) 240 241#define SIO_CLR(x) \ 242 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) & ~(x)) 243 244static void 245nge_delay(sc) 246 struct nge_softc *sc; 247{ 248 int idx; 249 250 for (idx = (300 / 33) + 1; idx > 0; idx--) 251 CSR_READ_4(sc, NGE_CSR); 252 253 return; 254} 255 256static void 257nge_eeprom_idle(sc) 258 struct nge_softc *sc; 259{ 260 register int i; 261 262 SIO_SET(NGE_MEAR_EE_CSEL); 263 nge_delay(sc); 264 SIO_SET(NGE_MEAR_EE_CLK); 265 nge_delay(sc); 266 267 for (i = 0; i < 25; i++) { 268 SIO_CLR(NGE_MEAR_EE_CLK); 269 nge_delay(sc); 270 SIO_SET(NGE_MEAR_EE_CLK); 271 nge_delay(sc); 272 } 273 274 SIO_CLR(NGE_MEAR_EE_CLK); 275 nge_delay(sc); 276 SIO_CLR(NGE_MEAR_EE_CSEL); 277 nge_delay(sc); 278 CSR_WRITE_4(sc, NGE_MEAR, 0x00000000); 279 280 return; 281} 282 283/* 284 * Send a read command and address to the EEPROM, check for ACK. 285 */ 286static void 287nge_eeprom_putbyte(sc, addr) 288 struct nge_softc *sc; 289 int addr; 290{ 291 register int d, i; 292 293 d = addr | NGE_EECMD_READ; 294 295 /* 296 * Feed in each bit and stobe the clock. 297 */ 298 for (i = 0x400; i; i >>= 1) { 299 if (d & i) { 300 SIO_SET(NGE_MEAR_EE_DIN); 301 } else { 302 SIO_CLR(NGE_MEAR_EE_DIN); 303 } 304 nge_delay(sc); 305 SIO_SET(NGE_MEAR_EE_CLK); 306 nge_delay(sc); 307 SIO_CLR(NGE_MEAR_EE_CLK); 308 nge_delay(sc); 309 } 310 311 return; 312} 313 314/* 315 * Read a word of data stored in the EEPROM at address 'addr.' 316 */ 317static void 318nge_eeprom_getword(sc, addr, dest) 319 struct nge_softc *sc; 320 int addr; 321 u_int16_t *dest; 322{ 323 register int i; 324 u_int16_t word = 0; 325 326 /* Force EEPROM to idle state. */ 327 nge_eeprom_idle(sc); 328 329 /* Enter EEPROM access mode. */ 330 nge_delay(sc); 331 SIO_CLR(NGE_MEAR_EE_CLK); 332 nge_delay(sc); 333 SIO_SET(NGE_MEAR_EE_CSEL); 334 nge_delay(sc); 335 336 /* 337 * Send address of word we want to read. 338 */ 339 nge_eeprom_putbyte(sc, addr); 340 341 /* 342 * Start reading bits from EEPROM. 343 */ 344 for (i = 0x8000; i; i >>= 1) { 345 SIO_SET(NGE_MEAR_EE_CLK); 346 nge_delay(sc); 347 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_EE_DOUT) 348 word |= i; 349 nge_delay(sc); 350 SIO_CLR(NGE_MEAR_EE_CLK); 351 nge_delay(sc); 352 } 353 354 /* Turn off EEPROM access mode. */ 355 nge_eeprom_idle(sc); 356 357 *dest = word; 358 359 return; 360} 361 362/* 363 * Read a sequence of words from the EEPROM. 364 */ 365static void 366nge_read_eeprom(sc, dest, off, cnt, swap) 367 struct nge_softc *sc; 368 caddr_t dest; 369 int off; 370 int cnt; 371 int swap; 372{ 373 int i; 374 u_int16_t word = 0, *ptr; 375 376 for (i = 0; i < cnt; i++) { 377 nge_eeprom_getword(sc, off + i, &word); 378 ptr = (u_int16_t *)(dest + (i * 2)); 379 if (swap) 380 *ptr = ntohs(word); 381 else 382 *ptr = word; 383 } 384 385 return; 386} 387 388/* 389 * Sync the PHYs by setting data bit and strobing the clock 32 times. 390 */ 391static void 392nge_mii_sync(sc) 393 struct nge_softc *sc; 394{ 395 register int i; 396 397 SIO_SET(NGE_MEAR_MII_DIR|NGE_MEAR_MII_DATA); 398 399 for (i = 0; i < 32; i++) { 400 SIO_SET(NGE_MEAR_MII_CLK); 401 DELAY(1); 402 SIO_CLR(NGE_MEAR_MII_CLK); 403 DELAY(1); 404 } 405 406 return; 407} 408 409/* 410 * Clock a series of bits through the MII. 411 */ 412static void 413nge_mii_send(sc, bits, cnt) 414 struct nge_softc *sc; 415 u_int32_t bits; 416 int cnt; 417{ 418 int i; 419 420 SIO_CLR(NGE_MEAR_MII_CLK); 421 422 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 423 if (bits & i) { 424 SIO_SET(NGE_MEAR_MII_DATA); 425 } else { 426 SIO_CLR(NGE_MEAR_MII_DATA); 427 } 428 DELAY(1); 429 SIO_CLR(NGE_MEAR_MII_CLK); 430 DELAY(1); 431 SIO_SET(NGE_MEAR_MII_CLK); 432 } 433} 434 435/* 436 * Read an PHY register through the MII. 437 */ 438static int 439nge_mii_readreg(sc, frame) 440 struct nge_softc *sc; 441 struct nge_mii_frame *frame; 442 443{ 444 int i, ack, s; 445 446 s = splimp(); 447 448 /* 449 * Set up frame for RX. 450 */ 451 frame->mii_stdelim = NGE_MII_STARTDELIM; 452 frame->mii_opcode = NGE_MII_READOP; 453 frame->mii_turnaround = 0; 454 frame->mii_data = 0; 455 456 CSR_WRITE_4(sc, NGE_MEAR, 0); 457 458 /* 459 * Turn on data xmit. 460 */ 461 SIO_SET(NGE_MEAR_MII_DIR); 462 463 nge_mii_sync(sc); 464 465 /* 466 * Send command/address info. 467 */ 468 nge_mii_send(sc, frame->mii_stdelim, 2); 469 nge_mii_send(sc, frame->mii_opcode, 2); 470 nge_mii_send(sc, frame->mii_phyaddr, 5); 471 nge_mii_send(sc, frame->mii_regaddr, 5); 472 473 /* Idle bit */ 474 SIO_CLR((NGE_MEAR_MII_CLK|NGE_MEAR_MII_DATA)); 475 DELAY(1); 476 SIO_SET(NGE_MEAR_MII_CLK); 477 DELAY(1); 478 479 /* Turn off xmit. */ 480 SIO_CLR(NGE_MEAR_MII_DIR); 481 /* Check for ack */ 482 SIO_CLR(NGE_MEAR_MII_CLK); 483 DELAY(1); 484 ack = CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA; 485 SIO_SET(NGE_MEAR_MII_CLK); 486 DELAY(1); 487 488 /* 489 * Now try reading data bits. If the ack failed, we still 490 * need to clock through 16 cycles to keep the PHY(s) in sync. 491 */ 492 if (ack) { 493 for(i = 0; i < 16; i++) { 494 SIO_CLR(NGE_MEAR_MII_CLK); 495 DELAY(1); 496 SIO_SET(NGE_MEAR_MII_CLK); 497 DELAY(1); 498 } 499 goto fail; 500 } 501 502 for (i = 0x8000; i; i >>= 1) { 503 SIO_CLR(NGE_MEAR_MII_CLK); 504 DELAY(1); 505 if (!ack) { 506 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA) 507 frame->mii_data |= i; 508 DELAY(1); 509 } 510 SIO_SET(NGE_MEAR_MII_CLK); 511 DELAY(1); 512 } 513 514fail: 515 516 SIO_CLR(NGE_MEAR_MII_CLK); 517 DELAY(1); 518 SIO_SET(NGE_MEAR_MII_CLK); 519 DELAY(1); 520 521 splx(s); 522 523 if (ack) 524 return(1); 525 return(0); 526} 527 528/* 529 * Write to a PHY register through the MII. 530 */ 531static int 532nge_mii_writereg(sc, frame) 533 struct nge_softc *sc; 534 struct nge_mii_frame *frame; 535 536{ 537 int s; 538 539 s = splimp(); 540 /* 541 * Set up frame for TX. 542 */ 543 544 frame->mii_stdelim = NGE_MII_STARTDELIM; 545 frame->mii_opcode = NGE_MII_WRITEOP; 546 frame->mii_turnaround = NGE_MII_TURNAROUND; 547 548 /* 549 * Turn on data output. 550 */ 551 SIO_SET(NGE_MEAR_MII_DIR); 552 553 nge_mii_sync(sc); 554 555 nge_mii_send(sc, frame->mii_stdelim, 2); 556 nge_mii_send(sc, frame->mii_opcode, 2); 557 nge_mii_send(sc, frame->mii_phyaddr, 5); 558 nge_mii_send(sc, frame->mii_regaddr, 5); 559 nge_mii_send(sc, frame->mii_turnaround, 2); 560 nge_mii_send(sc, frame->mii_data, 16); 561 562 /* Idle bit. */ 563 SIO_SET(NGE_MEAR_MII_CLK); 564 DELAY(1); 565 SIO_CLR(NGE_MEAR_MII_CLK); 566 DELAY(1); 567 568 /* 569 * Turn off xmit. 570 */ 571 SIO_CLR(NGE_MEAR_MII_DIR); 572 573 splx(s); 574 575 return(0); 576} 577 578static int 579nge_miibus_readreg(dev, phy, reg) 580 device_t dev; 581 int phy, reg; 582{ 583 struct nge_softc *sc; 584 struct nge_mii_frame frame; 585 586 sc = device_get_softc(dev); 587 588 bzero((char *)&frame, sizeof(frame)); 589 590 frame.mii_phyaddr = phy; 591 frame.mii_regaddr = reg; 592 nge_mii_readreg(sc, &frame); 593 594 return(frame.mii_data); 595} 596 597static int 598nge_miibus_writereg(dev, phy, reg, data) 599 device_t dev; 600 int phy, reg, data; 601{ 602 struct nge_softc *sc; 603 struct nge_mii_frame frame; 604 605 sc = device_get_softc(dev); 606 607 bzero((char *)&frame, sizeof(frame)); 608 609 frame.mii_phyaddr = phy; 610 frame.mii_regaddr = reg; 611 frame.mii_data = data; 612 nge_mii_writereg(sc, &frame); 613 614 return(0); 615} 616 617static void 618nge_miibus_statchg(dev) 619 device_t dev; 620{ 621 int status; 622 struct nge_softc *sc; 623 struct mii_data *mii; 624 625 sc = device_get_softc(dev); 626 if (sc->nge_tbi) { 627 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 628 == IFM_AUTO) { 629 status = CSR_READ_4(sc, NGE_TBI_ANLPAR); 630 if (status == 0 || status & NGE_TBIANAR_FDX) { 631 NGE_SETBIT(sc, NGE_TX_CFG, 632 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 633 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 634 } else { 635 NGE_CLRBIT(sc, NGE_TX_CFG, 636 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 637 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 638 } 639 640 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 641 != IFM_FDX) { 642 NGE_CLRBIT(sc, NGE_TX_CFG, 643 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 644 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 645 } else { 646 NGE_SETBIT(sc, NGE_TX_CFG, 647 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 648 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 649 } 650 } else { 651 mii = device_get_softc(sc->nge_miibus); 652 653 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 654 NGE_SETBIT(sc, NGE_TX_CFG, 655 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 656 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 657 } else { 658 NGE_CLRBIT(sc, NGE_TX_CFG, 659 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 660 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 661 } 662 663 /* If we have a 1000Mbps link, set the mode_1000 bit. */ 664 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T || 665 IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) { 666 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 667 } else { 668 NGE_CLRBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 669 } 670 } 671 return; 672} 673 674static u_int32_t 675nge_mchash(addr) 676 const uint8_t *addr; 677{ 678 uint32_t crc, carry; 679 int idx, bit; 680 uint8_t data; 681 682 /* Compute CRC for the address value. */ 683 crc = 0xFFFFFFFF; /* initial value */ 684 685 for (idx = 0; idx < 6; idx++) { 686 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) { 687 carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01); 688 crc <<= 1; 689 if (carry) 690 crc = (crc ^ 0x04c11db6) | carry; 691 } 692 } 693 694 /* 695 * return the filter bit position 696 */ 697 698 return((crc >> 21) & 0x00000FFF); 699} 700 701static void 702nge_setmulti(sc) 703 struct nge_softc *sc; 704{ 705 struct ifnet *ifp; 706 struct ifmultiaddr *ifma; 707 u_int32_t h = 0, i, filtsave; 708 int bit, index; 709 710 ifp = &sc->arpcom.ac_if; 711 712 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 713 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 714 NGE_RXFILTCTL_MCHASH|NGE_RXFILTCTL_UCHASH); 715 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLMULTI); 716 return; 717 } 718 719 /* 720 * We have to explicitly enable the multicast hash table 721 * on the NatSemi chip if we want to use it, which we do. 722 * We also have to tell it that we don't want to use the 723 * hash table for matching unicast addresses. 724 */ 725 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_MCHASH); 726 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 727 NGE_RXFILTCTL_ALLMULTI|NGE_RXFILTCTL_UCHASH); 728 729 filtsave = CSR_READ_4(sc, NGE_RXFILT_CTL); 730 731 /* first, zot all the existing hash bits */ 732 for (i = 0; i < NGE_MCAST_FILTER_LEN; i += 2) { 733 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_MCAST_LO + i); 734 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 0); 735 } 736 737 /* 738 * From the 11 bits returned by the crc routine, the top 7 739 * bits represent the 16-bit word in the mcast hash table 740 * that needs to be updated, and the lower 4 bits represent 741 * which bit within that byte needs to be set. 742 */ 743 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 744 if (ifma->ifma_addr->sa_family != AF_LINK) 745 continue; 746 h = nge_mchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 747 index = (h >> 4) & 0x7F; 748 bit = h & 0xF; 749 CSR_WRITE_4(sc, NGE_RXFILT_CTL, 750 NGE_FILTADDR_MCAST_LO + (index * 2)); 751 NGE_SETBIT(sc, NGE_RXFILT_DATA, (1 << bit)); 752 } 753 754 CSR_WRITE_4(sc, NGE_RXFILT_CTL, filtsave); 755 756 return; 757} 758 759static void 760nge_reset(sc) 761 struct nge_softc *sc; 762{ 763 register int i; 764 765 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RESET); 766 767 for (i = 0; i < NGE_TIMEOUT; i++) { 768 if (!(CSR_READ_4(sc, NGE_CSR) & NGE_CSR_RESET)) 769 break; 770 } 771 772 if (i == NGE_TIMEOUT) 773 printf("nge%d: reset never completed\n", sc->nge_unit); 774 775 /* Wait a little while for the chip to get its brains in order. */ 776 DELAY(1000); 777 778 /* 779 * If this is a NetSemi chip, make sure to clear 780 * PME mode. 781 */ 782 CSR_WRITE_4(sc, NGE_CLKRUN, NGE_CLKRUN_PMESTS); 783 CSR_WRITE_4(sc, NGE_CLKRUN, 0); 784 785 return; 786} 787 788/* 789 * Probe for a NatSemi chip. Check the PCI vendor and device 790 * IDs against our list and return a device name if we find a match. 791 */ 792static int 793nge_probe(dev) 794 device_t dev; 795{ 796 struct nge_type *t; 797 798 t = nge_devs; 799 800 while(t->nge_name != NULL) { 801 if ((pci_get_vendor(dev) == t->nge_vid) && 802 (pci_get_device(dev) == t->nge_did)) { 803 device_set_desc(dev, t->nge_name); 804 return(0); 805 } 806 t++; 807 } 808 809 return(ENXIO); 810} 811 812/* 813 * Attach the interface. Allocate softc structures, do ifmedia 814 * setup and ethernet/BPF attach. 815 */ 816static int 817nge_attach(dev) 818 device_t dev; 819{ 820 int s; 821 u_char eaddr[ETHER_ADDR_LEN]; 822 struct nge_softc *sc; 823 struct ifnet *ifp; 824 int unit, error = 0, rid; 825 const char *sep = ""; 826 827 s = splimp(); 828 829 sc = device_get_softc(dev); 830 unit = device_get_unit(dev); 831 bzero(sc, sizeof(struct nge_softc)); 832 833 mtx_init(&sc->nge_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 834 MTX_DEF | MTX_RECURSE); 835#ifndef BURN_BRIDGES 836 /* 837 * Handle power management nonsense. 838 */ 839 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 840 u_int32_t iobase, membase, irq; 841 842 /* Save important PCI config data. */ 843 iobase = pci_read_config(dev, NGE_PCI_LOIO, 4); 844 membase = pci_read_config(dev, NGE_PCI_LOMEM, 4); 845 irq = pci_read_config(dev, NGE_PCI_INTLINE, 4); 846 847 /* Reset the power state. */ 848 printf("nge%d: chip is in D%d power mode " 849 "-- setting to D0\n", unit, 850 pci_get_powerstate(dev)); 851 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 852 853 /* Restore PCI config data. */ 854 pci_write_config(dev, NGE_PCI_LOIO, iobase, 4); 855 pci_write_config(dev, NGE_PCI_LOMEM, membase, 4); 856 pci_write_config(dev, NGE_PCI_INTLINE, irq, 4); 857 } 858#endif 859 /* 860 * Map control/status registers. 861 */ 862 pci_enable_busmaster(dev); 863 864 rid = NGE_RID; 865 sc->nge_res = bus_alloc_resource_any(dev, NGE_RES, &rid, RF_ACTIVE); 866 867 if (sc->nge_res == NULL) { 868 printf("nge%d: couldn't map ports/memory\n", unit); 869 error = ENXIO; 870 goto fail; 871 } 872 873 sc->nge_btag = rman_get_bustag(sc->nge_res); 874 sc->nge_bhandle = rman_get_bushandle(sc->nge_res); 875 876 /* Allocate interrupt */ 877 rid = 0; 878 sc->nge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 879 RF_SHAREABLE | RF_ACTIVE); 880 881 if (sc->nge_irq == NULL) { 882 printf("nge%d: couldn't map interrupt\n", unit); 883 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 884 error = ENXIO; 885 goto fail; 886 } 887 888 error = bus_setup_intr(dev, sc->nge_irq, INTR_TYPE_NET, 889 nge_intr, sc, &sc->nge_intrhand); 890 891 if (error) { 892 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 893 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 894 printf("nge%d: couldn't set up irq\n", unit); 895 goto fail; 896 } 897 898 /* Reset the adapter. */ 899 nge_reset(sc); 900 901 /* 902 * Get station address from the EEPROM. 903 */ 904 nge_read_eeprom(sc, (caddr_t)&eaddr[4], NGE_EE_NODEADDR, 1, 0); 905 nge_read_eeprom(sc, (caddr_t)&eaddr[2], NGE_EE_NODEADDR + 1, 1, 0); 906 nge_read_eeprom(sc, (caddr_t)&eaddr[0], NGE_EE_NODEADDR + 2, 1, 0); 907 908 sc->nge_unit = unit; 909 bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 910 911 sc->nge_ldata = contigmalloc(sizeof(struct nge_list_data), M_DEVBUF, 912 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 913 914 if (sc->nge_ldata == NULL) { 915 printf("nge%d: no memory for list buffers!\n", unit); 916 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 917 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 918 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 919 error = ENXIO; 920 goto fail; 921 } 922 bzero(sc->nge_ldata, sizeof(struct nge_list_data)); 923 924 /* Try to allocate memory for jumbo buffers. */ 925 if (nge_alloc_jumbo_mem(sc)) { 926 printf("nge%d: jumbo buffer allocation failed\n", 927 sc->nge_unit); 928 contigfree(sc->nge_ldata, 929 sizeof(struct nge_list_data), M_DEVBUF); 930 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 931 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 932 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 933 error = ENXIO; 934 goto fail; 935 } 936 937 ifp = &sc->arpcom.ac_if; 938 ifp->if_softc = sc; 939 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 940 ifp->if_mtu = ETHERMTU; 941 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 942 ifp->if_ioctl = nge_ioctl; 943 ifp->if_output = ether_output; 944 ifp->if_start = nge_start; 945 ifp->if_watchdog = nge_watchdog; 946 ifp->if_init = nge_init; 947 ifp->if_baudrate = 1000000000; 948 ifp->if_snd.ifq_maxlen = NGE_TX_LIST_CNT - 1; 949 ifp->if_hwassist = NGE_CSUM_FEATURES; 950 ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING; 951 ifp->if_capenable = ifp->if_capabilities; 952 953 /* 954 * Do MII setup. 955 */ 956 if (mii_phy_probe(dev, &sc->nge_miibus, 957 nge_ifmedia_upd, nge_ifmedia_sts)) { 958 if (CSR_READ_4(sc, NGE_CFG) & NGE_CFG_TBI_EN) { 959 sc->nge_tbi = 1; 960 device_printf(dev, "Using TBI\n"); 961 962 sc->nge_miibus = dev; 963 964 ifmedia_init(&sc->nge_ifmedia, 0, nge_ifmedia_upd, 965 nge_ifmedia_sts); 966#define ADD(m, c) ifmedia_add(&sc->nge_ifmedia, (m), (c), NULL) 967#define PRINT(s) printf("%s%s", sep, s); sep = ", " 968 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, 0), 0); 969 device_printf(dev, " "); 970 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 0), 0); 971 PRINT("1000baseSX"); 972 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 0),0); 973 PRINT("1000baseSX-FDX"); 974 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 0); 975 PRINT("auto"); 976 977 printf("\n"); 978#undef ADD 979#undef PRINT 980 ifmedia_set(&sc->nge_ifmedia, 981 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0)); 982 983 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 984 | NGE_GPIO_GP4_OUT 985 | NGE_GPIO_GP1_OUTENB | NGE_GPIO_GP2_OUTENB 986 | NGE_GPIO_GP3_OUTENB 987 | NGE_GPIO_GP3_IN | NGE_GPIO_GP4_IN); 988 989 } else { 990 printf("nge%d: MII without any PHY!\n", sc->nge_unit); 991 nge_free_jumbo_mem(sc); 992 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 993 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 994 bus_release_resource(dev, NGE_RES, NGE_RID, 995 sc->nge_res); 996 error = ENXIO; 997 goto fail; 998 } 999 } 1000 1001 /* 1002 * Call MI attach routine. 1003 */ 1004 ether_ifattach(ifp, eaddr); 1005 callout_handle_init(&sc->nge_stat_ch); 1006 1007fail: 1008 1009 splx(s); 1010 mtx_destroy(&sc->nge_mtx); 1011 return(error); 1012} 1013 1014static int 1015nge_detach(dev) 1016 device_t dev; 1017{ 1018 struct nge_softc *sc; 1019 struct ifnet *ifp; 1020 int s; 1021 1022 s = splimp(); 1023 1024 sc = device_get_softc(dev); 1025 ifp = &sc->arpcom.ac_if; 1026 1027 nge_reset(sc); 1028 nge_stop(sc); 1029 ether_ifdetach(ifp); 1030 1031 bus_generic_detach(dev); 1032 if (!sc->nge_tbi) { 1033 device_delete_child(dev, sc->nge_miibus); 1034 } 1035 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 1036 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 1037 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 1038 1039 contigfree(sc->nge_ldata, sizeof(struct nge_list_data), M_DEVBUF); 1040 nge_free_jumbo_mem(sc); 1041 1042 splx(s); 1043 mtx_destroy(&sc->nge_mtx); 1044 1045 return(0); 1046} 1047 1048/* 1049 * Initialize the transmit descriptors. 1050 */ 1051static int 1052nge_list_tx_init(sc) 1053 struct nge_softc *sc; 1054{ 1055 struct nge_list_data *ld; 1056 struct nge_ring_data *cd; 1057 int i; 1058 1059 cd = &sc->nge_cdata; 1060 ld = sc->nge_ldata; 1061 1062 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 1063 if (i == (NGE_TX_LIST_CNT - 1)) { 1064 ld->nge_tx_list[i].nge_nextdesc = 1065 &ld->nge_tx_list[0]; 1066 ld->nge_tx_list[i].nge_next = 1067 vtophys(&ld->nge_tx_list[0]); 1068 } else { 1069 ld->nge_tx_list[i].nge_nextdesc = 1070 &ld->nge_tx_list[i + 1]; 1071 ld->nge_tx_list[i].nge_next = 1072 vtophys(&ld->nge_tx_list[i + 1]); 1073 } 1074 ld->nge_tx_list[i].nge_mbuf = NULL; 1075 ld->nge_tx_list[i].nge_ptr = 0; 1076 ld->nge_tx_list[i].nge_ctl = 0; 1077 } 1078 1079 cd->nge_tx_prod = cd->nge_tx_cons = cd->nge_tx_cnt = 0; 1080 1081 return(0); 1082} 1083 1084 1085/* 1086 * Initialize the RX descriptors and allocate mbufs for them. Note that 1087 * we arrange the descriptors in a closed ring, so that the last descriptor 1088 * points back to the first. 1089 */ 1090static int 1091nge_list_rx_init(sc) 1092 struct nge_softc *sc; 1093{ 1094 struct nge_list_data *ld; 1095 struct nge_ring_data *cd; 1096 int i; 1097 1098 ld = sc->nge_ldata; 1099 cd = &sc->nge_cdata; 1100 1101 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 1102 if (nge_newbuf(sc, &ld->nge_rx_list[i], NULL) == ENOBUFS) 1103 return(ENOBUFS); 1104 if (i == (NGE_RX_LIST_CNT - 1)) { 1105 ld->nge_rx_list[i].nge_nextdesc = 1106 &ld->nge_rx_list[0]; 1107 ld->nge_rx_list[i].nge_next = 1108 vtophys(&ld->nge_rx_list[0]); 1109 } else { 1110 ld->nge_rx_list[i].nge_nextdesc = 1111 &ld->nge_rx_list[i + 1]; 1112 ld->nge_rx_list[i].nge_next = 1113 vtophys(&ld->nge_rx_list[i + 1]); 1114 } 1115 } 1116 1117 cd->nge_rx_prod = 0; 1118 1119 return(0); 1120} 1121 1122/* 1123 * Initialize an RX descriptor and attach an MBUF cluster. 1124 */ 1125static int 1126nge_newbuf(sc, c, m) 1127 struct nge_softc *sc; 1128 struct nge_desc *c; 1129 struct mbuf *m; 1130{ 1131 struct mbuf *m_new = NULL; 1132 caddr_t *buf = NULL; 1133 1134 if (m == NULL) { 1135 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1136 if (m_new == NULL) { 1137 printf("nge%d: no memory for rx list " 1138 "-- packet dropped!\n", sc->nge_unit); 1139 return(ENOBUFS); 1140 } 1141 1142 /* Allocate the jumbo buffer */ 1143 buf = nge_jalloc(sc); 1144 if (buf == NULL) { 1145#ifdef NGE_VERBOSE 1146 printf("nge%d: jumbo allocation failed " 1147 "-- packet dropped!\n", sc->nge_unit); 1148#endif 1149 m_freem(m_new); 1150 return(ENOBUFS); 1151 } 1152 /* Attach the buffer to the mbuf */ 1153 m_new->m_data = (void *)buf; 1154 m_new->m_len = m_new->m_pkthdr.len = NGE_JUMBO_FRAMELEN; 1155 MEXTADD(m_new, buf, NGE_JUMBO_FRAMELEN, nge_jfree, 1156 (struct nge_softc *)sc, 0, EXT_NET_DRV); 1157 } else { 1158 m_new = m; 1159 m_new->m_len = m_new->m_pkthdr.len = NGE_JUMBO_FRAMELEN; 1160 m_new->m_data = m_new->m_ext.ext_buf; 1161 } 1162 1163 m_adj(m_new, sizeof(u_int64_t)); 1164 1165 c->nge_mbuf = m_new; 1166 c->nge_ptr = vtophys(mtod(m_new, caddr_t)); 1167 c->nge_ctl = m_new->m_len; 1168 c->nge_extsts = 0; 1169 1170 return(0); 1171} 1172 1173static int 1174nge_alloc_jumbo_mem(sc) 1175 struct nge_softc *sc; 1176{ 1177 caddr_t ptr; 1178 register int i; 1179 struct nge_jpool_entry *entry; 1180 1181 /* Grab a big chunk o' storage. */ 1182 sc->nge_cdata.nge_jumbo_buf = contigmalloc(NGE_JMEM, M_DEVBUF, 1183 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 1184 1185 if (sc->nge_cdata.nge_jumbo_buf == NULL) { 1186 printf("nge%d: no memory for jumbo buffers!\n", sc->nge_unit); 1187 return(ENOBUFS); 1188 } 1189 1190 SLIST_INIT(&sc->nge_jfree_listhead); 1191 SLIST_INIT(&sc->nge_jinuse_listhead); 1192 1193 /* 1194 * Now divide it up into 9K pieces and save the addresses 1195 * in an array. 1196 */ 1197 ptr = sc->nge_cdata.nge_jumbo_buf; 1198 for (i = 0; i < NGE_JSLOTS; i++) { 1199 sc->nge_cdata.nge_jslots[i] = ptr; 1200 ptr += NGE_JLEN; 1201 entry = malloc(sizeof(struct nge_jpool_entry), 1202 M_DEVBUF, M_NOWAIT); 1203 if (entry == NULL) { 1204 printf("nge%d: no memory for jumbo " 1205 "buffer queue!\n", sc->nge_unit); 1206 return(ENOBUFS); 1207 } 1208 entry->slot = i; 1209 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, 1210 entry, jpool_entries); 1211 } 1212 1213 return(0); 1214} 1215 1216static void 1217nge_free_jumbo_mem(sc) 1218 struct nge_softc *sc; 1219{ 1220 register int i; 1221 struct nge_jpool_entry *entry; 1222 1223 for (i = 0; i < NGE_JSLOTS; i++) { 1224 entry = SLIST_FIRST(&sc->nge_jfree_listhead); 1225 SLIST_REMOVE_HEAD(&sc->nge_jfree_listhead, jpool_entries); 1226 free(entry, M_DEVBUF); 1227 } 1228 1229 contigfree(sc->nge_cdata.nge_jumbo_buf, NGE_JMEM, M_DEVBUF); 1230 1231 return; 1232} 1233 1234/* 1235 * Allocate a jumbo buffer. 1236 */ 1237static void * 1238nge_jalloc(sc) 1239 struct nge_softc *sc; 1240{ 1241 struct nge_jpool_entry *entry; 1242 1243 entry = SLIST_FIRST(&sc->nge_jfree_listhead); 1244 1245 if (entry == NULL) { 1246#ifdef NGE_VERBOSE 1247 printf("nge%d: no free jumbo buffers\n", sc->nge_unit); 1248#endif 1249 return(NULL); 1250 } 1251 1252 SLIST_REMOVE_HEAD(&sc->nge_jfree_listhead, jpool_entries); 1253 SLIST_INSERT_HEAD(&sc->nge_jinuse_listhead, entry, jpool_entries); 1254 return(sc->nge_cdata.nge_jslots[entry->slot]); 1255} 1256 1257/* 1258 * Release a jumbo buffer. 1259 */ 1260static void 1261nge_jfree(buf, args) 1262 void *buf; 1263 void *args; 1264{ 1265 struct nge_softc *sc; 1266 int i; 1267 struct nge_jpool_entry *entry; 1268 1269 /* Extract the softc struct pointer. */ 1270 sc = args; 1271 1272 if (sc == NULL) 1273 panic("nge_jfree: can't find softc pointer!"); 1274 1275 /* calculate the slot this buffer belongs to */ 1276 i = ((vm_offset_t)buf 1277 - (vm_offset_t)sc->nge_cdata.nge_jumbo_buf) / NGE_JLEN; 1278 1279 if ((i < 0) || (i >= NGE_JSLOTS)) 1280 panic("nge_jfree: asked to free buffer that we don't manage!"); 1281 1282 entry = SLIST_FIRST(&sc->nge_jinuse_listhead); 1283 if (entry == NULL) 1284 panic("nge_jfree: buffer not in use!"); 1285 entry->slot = i; 1286 SLIST_REMOVE_HEAD(&sc->nge_jinuse_listhead, jpool_entries); 1287 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, entry, jpool_entries); 1288 1289 return; 1290} 1291/* 1292 * A frame has been uploaded: pass the resulting mbuf chain up to 1293 * the higher level protocols. 1294 */ 1295static void 1296nge_rxeof(sc) 1297 struct nge_softc *sc; 1298{ 1299 struct mbuf *m; 1300 struct ifnet *ifp; 1301 struct nge_desc *cur_rx; 1302 int i, total_len = 0; 1303 u_int32_t rxstat; 1304 1305 ifp = &sc->arpcom.ac_if; 1306 i = sc->nge_cdata.nge_rx_prod; 1307 1308 while(NGE_OWNDESC(&sc->nge_ldata->nge_rx_list[i])) { 1309 struct mbuf *m0 = NULL; 1310 u_int32_t extsts; 1311 1312#ifdef DEVICE_POLLING 1313 if (ifp->if_flags & IFF_POLLING) { 1314 if (sc->rxcycles <= 0) 1315 break; 1316 sc->rxcycles--; 1317 } 1318#endif /* DEVICE_POLLING */ 1319 1320 cur_rx = &sc->nge_ldata->nge_rx_list[i]; 1321 rxstat = cur_rx->nge_rxstat; 1322 extsts = cur_rx->nge_extsts; 1323 m = cur_rx->nge_mbuf; 1324 cur_rx->nge_mbuf = NULL; 1325 total_len = NGE_RXBYTES(cur_rx); 1326 NGE_INC(i, NGE_RX_LIST_CNT); 1327 /* 1328 * If an error occurs, update stats, clear the 1329 * status word and leave the mbuf cluster in place: 1330 * it should simply get re-used next time this descriptor 1331 * comes up in the ring. 1332 */ 1333 if (!(rxstat & NGE_CMDSTS_PKT_OK)) { 1334 ifp->if_ierrors++; 1335 nge_newbuf(sc, cur_rx, m); 1336 continue; 1337 } 1338 1339 /* 1340 * Ok. NatSemi really screwed up here. This is the 1341 * only gigE chip I know of with alignment constraints 1342 * on receive buffers. RX buffers must be 64-bit aligned. 1343 */ 1344#ifdef __i386__ 1345 /* 1346 * By popular demand, ignore the alignment problems 1347 * on the Intel x86 platform. The performance hit 1348 * incurred due to unaligned accesses is much smaller 1349 * than the hit produced by forcing buffer copies all 1350 * the time, especially with jumbo frames. We still 1351 * need to fix up the alignment everywhere else though. 1352 */ 1353 if (nge_newbuf(sc, cur_rx, NULL) == ENOBUFS) { 1354#endif 1355 m0 = m_devget(mtod(m, char *), total_len, 1356 ETHER_ALIGN, ifp, NULL); 1357 nge_newbuf(sc, cur_rx, m); 1358 if (m0 == NULL) { 1359 printf("nge%d: no receive buffers " 1360 "available -- packet dropped!\n", 1361 sc->nge_unit); 1362 ifp->if_ierrors++; 1363 continue; 1364 } 1365 m = m0; 1366#ifdef __i386__ 1367 } else { 1368 m->m_pkthdr.rcvif = ifp; 1369 m->m_pkthdr.len = m->m_len = total_len; 1370 } 1371#endif 1372 1373 ifp->if_ipackets++; 1374 1375 /* Do IP checksum checking. */ 1376 if (extsts & NGE_RXEXTSTS_IPPKT) 1377 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1378 if (!(extsts & NGE_RXEXTSTS_IPCSUMERR)) 1379 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1380 if ((extsts & NGE_RXEXTSTS_TCPPKT && 1381 !(extsts & NGE_RXEXTSTS_TCPCSUMERR)) || 1382 (extsts & NGE_RXEXTSTS_UDPPKT && 1383 !(extsts & NGE_RXEXTSTS_UDPCSUMERR))) { 1384 m->m_pkthdr.csum_flags |= 1385 CSUM_DATA_VALID|CSUM_PSEUDO_HDR; 1386 m->m_pkthdr.csum_data = 0xffff; 1387 } 1388 1389 /* 1390 * If we received a packet with a vlan tag, pass it 1391 * to vlan_input() instead of ether_input(). 1392 */ 1393 if (extsts & NGE_RXEXTSTS_VLANPKT) { 1394 VLAN_INPUT_TAG(ifp, m, 1395 ntohs(extsts & NGE_RXEXTSTS_VTCI), continue); 1396 } 1397 1398 (*ifp->if_input)(ifp, m); 1399 } 1400 1401 sc->nge_cdata.nge_rx_prod = i; 1402 1403 return; 1404} 1405 1406/* 1407 * A frame was downloaded to the chip. It's safe for us to clean up 1408 * the list buffers. 1409 */ 1410 1411static void 1412nge_txeof(sc) 1413 struct nge_softc *sc; 1414{ 1415 struct nge_desc *cur_tx; 1416 struct ifnet *ifp; 1417 u_int32_t idx; 1418 1419 ifp = &sc->arpcom.ac_if; 1420 1421 /* 1422 * Go through our tx list and free mbufs for those 1423 * frames that have been transmitted. 1424 */ 1425 idx = sc->nge_cdata.nge_tx_cons; 1426 while (idx != sc->nge_cdata.nge_tx_prod) { 1427 cur_tx = &sc->nge_ldata->nge_tx_list[idx]; 1428 1429 if (NGE_OWNDESC(cur_tx)) 1430 break; 1431 1432 if (cur_tx->nge_ctl & NGE_CMDSTS_MORE) { 1433 sc->nge_cdata.nge_tx_cnt--; 1434 NGE_INC(idx, NGE_TX_LIST_CNT); 1435 continue; 1436 } 1437 1438 if (!(cur_tx->nge_ctl & NGE_CMDSTS_PKT_OK)) { 1439 ifp->if_oerrors++; 1440 if (cur_tx->nge_txstat & NGE_TXSTAT_EXCESSCOLLS) 1441 ifp->if_collisions++; 1442 if (cur_tx->nge_txstat & NGE_TXSTAT_OUTOFWINCOLL) 1443 ifp->if_collisions++; 1444 } 1445 1446 ifp->if_collisions += 1447 (cur_tx->nge_txstat & NGE_TXSTAT_COLLCNT) >> 16; 1448 1449 ifp->if_opackets++; 1450 if (cur_tx->nge_mbuf != NULL) { 1451 m_freem(cur_tx->nge_mbuf); 1452 cur_tx->nge_mbuf = NULL; 1453 ifp->if_flags &= ~IFF_OACTIVE; 1454 } 1455 1456 sc->nge_cdata.nge_tx_cnt--; 1457 NGE_INC(idx, NGE_TX_LIST_CNT); 1458 } 1459 1460 sc->nge_cdata.nge_tx_cons = idx; 1461 1462 if (idx == sc->nge_cdata.nge_tx_prod) 1463 ifp->if_timer = 0; 1464 1465 return; 1466} 1467 1468static void 1469nge_tick(xsc) 1470 void *xsc; 1471{ 1472 struct nge_softc *sc; 1473 struct mii_data *mii; 1474 struct ifnet *ifp; 1475 int s; 1476 1477 s = splimp(); 1478 1479 sc = xsc; 1480 ifp = &sc->arpcom.ac_if; 1481 1482 if (sc->nge_tbi) { 1483 if (!sc->nge_link) { 1484 if (CSR_READ_4(sc, NGE_TBI_BMSR) 1485 & NGE_TBIBMSR_ANEG_DONE) { 1486 printf("nge%d: gigabit link up\n", 1487 sc->nge_unit); 1488 nge_miibus_statchg(sc->nge_miibus); 1489 sc->nge_link++; 1490 if (ifp->if_snd.ifq_head != NULL) 1491 nge_start(ifp); 1492 } 1493 } 1494 } else { 1495 mii = device_get_softc(sc->nge_miibus); 1496 mii_tick(mii); 1497 1498 if (!sc->nge_link) { 1499 if (mii->mii_media_status & IFM_ACTIVE && 1500 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 1501 sc->nge_link++; 1502 if (IFM_SUBTYPE(mii->mii_media_active) 1503 == IFM_1000_T) 1504 printf("nge%d: gigabit link up\n", 1505 sc->nge_unit); 1506 if (ifp->if_snd.ifq_head != NULL) 1507 nge_start(ifp); 1508 } 1509 } 1510 } 1511 sc->nge_stat_ch = timeout(nge_tick, sc, hz); 1512 1513 splx(s); 1514 1515 return; 1516} 1517 1518#ifdef DEVICE_POLLING 1519static poll_handler_t nge_poll; 1520 1521static void 1522nge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1523{ 1524 struct nge_softc *sc = ifp->if_softc; 1525 1526 if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ 1527 CSR_WRITE_4(sc, NGE_IER, 1); 1528 return; 1529 } 1530 1531 /* 1532 * On the nge, reading the status register also clears it. 1533 * So before returning to intr mode we must make sure that all 1534 * possible pending sources of interrupts have been served. 1535 * In practice this means run to completion the *eof routines, 1536 * and then call the interrupt routine 1537 */ 1538 sc->rxcycles = count; 1539 nge_rxeof(sc); 1540 nge_txeof(sc); 1541 if (ifp->if_snd.ifq_head != NULL) 1542 nge_start(ifp); 1543 1544 if (sc->rxcycles > 0 || cmd == POLL_AND_CHECK_STATUS) { 1545 u_int32_t status; 1546 1547 /* Reading the ISR register clears all interrupts. */ 1548 status = CSR_READ_4(sc, NGE_ISR); 1549 1550 if (status & (NGE_ISR_RX_ERR|NGE_ISR_RX_OFLOW)) 1551 nge_rxeof(sc); 1552 1553 if (status & (NGE_ISR_RX_IDLE)) 1554 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1555 1556 if (status & NGE_ISR_SYSERR) { 1557 nge_reset(sc); 1558 nge_init(sc); 1559 } 1560 } 1561} 1562#endif /* DEVICE_POLLING */ 1563 1564static void 1565nge_intr(arg) 1566 void *arg; 1567{ 1568 struct nge_softc *sc; 1569 struct ifnet *ifp; 1570 u_int32_t status; 1571 1572 sc = arg; 1573 ifp = &sc->arpcom.ac_if; 1574 1575#ifdef DEVICE_POLLING 1576 if (ifp->if_flags & IFF_POLLING) 1577 return; 1578 if (ether_poll_register(nge_poll, ifp)) { /* ok, disable interrupts */ 1579 CSR_WRITE_4(sc, NGE_IER, 0); 1580 nge_poll(ifp, 0, 1); 1581 return; 1582 } 1583#endif /* DEVICE_POLLING */ 1584 1585 /* Supress unwanted interrupts */ 1586 if (!(ifp->if_flags & IFF_UP)) { 1587 nge_stop(sc); 1588 return; 1589 } 1590 1591 /* Disable interrupts. */ 1592 CSR_WRITE_4(sc, NGE_IER, 0); 1593 1594 /* Data LED on for TBI mode */ 1595 if(sc->nge_tbi) 1596 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1597 | NGE_GPIO_GP3_OUT); 1598 1599 for (;;) { 1600 /* Reading the ISR register clears all interrupts. */ 1601 status = CSR_READ_4(sc, NGE_ISR); 1602 1603 if ((status & NGE_INTRS) == 0) 1604 break; 1605 1606 if ((status & NGE_ISR_TX_DESC_OK) || 1607 (status & NGE_ISR_TX_ERR) || 1608 (status & NGE_ISR_TX_OK) || 1609 (status & NGE_ISR_TX_IDLE)) 1610 nge_txeof(sc); 1611 1612 if ((status & NGE_ISR_RX_DESC_OK) || 1613 (status & NGE_ISR_RX_ERR) || 1614 (status & NGE_ISR_RX_OFLOW) || 1615 (status & NGE_ISR_RX_FIFO_OFLOW) || 1616 (status & NGE_ISR_RX_IDLE) || 1617 (status & NGE_ISR_RX_OK)) 1618 nge_rxeof(sc); 1619 1620 if ((status & NGE_ISR_RX_IDLE)) 1621 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1622 1623 if (status & NGE_ISR_SYSERR) { 1624 nge_reset(sc); 1625 ifp->if_flags &= ~IFF_RUNNING; 1626 nge_init(sc); 1627 } 1628 1629#if 0 1630 /* 1631 * XXX: nge_tick() is not ready to be called this way 1632 * it screws up the aneg timeout because mii_tick() is 1633 * only to be called once per second. 1634 */ 1635 if (status & NGE_IMR_PHY_INTR) { 1636 sc->nge_link = 0; 1637 nge_tick(sc); 1638 } 1639#endif 1640 } 1641 1642 /* Re-enable interrupts. */ 1643 CSR_WRITE_4(sc, NGE_IER, 1); 1644 1645 if (ifp->if_snd.ifq_head != NULL) 1646 nge_start(ifp); 1647 1648 /* Data LED off for TBI mode */ 1649 1650 if(sc->nge_tbi) 1651 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1652 & ~NGE_GPIO_GP3_OUT); 1653 1654 return; 1655} 1656 1657/* 1658 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1659 * pointers to the fragment pointers. 1660 */ 1661static int 1662nge_encap(sc, m_head, txidx) 1663 struct nge_softc *sc; 1664 struct mbuf *m_head; 1665 u_int32_t *txidx; 1666{ 1667 struct nge_desc *f = NULL; 1668 struct mbuf *m; 1669 int frag, cur, cnt = 0; 1670 struct m_tag *mtag; 1671 1672 /* 1673 * Start packing the mbufs in this chain into 1674 * the fragment pointers. Stop when we run out 1675 * of fragments or hit the end of the mbuf chain. 1676 */ 1677 m = m_head; 1678 cur = frag = *txidx; 1679 1680 for (m = m_head; m != NULL; m = m->m_next) { 1681 if (m->m_len != 0) { 1682 if ((NGE_TX_LIST_CNT - 1683 (sc->nge_cdata.nge_tx_cnt + cnt)) < 2) 1684 return(ENOBUFS); 1685 f = &sc->nge_ldata->nge_tx_list[frag]; 1686 f->nge_ctl = NGE_CMDSTS_MORE | m->m_len; 1687 f->nge_ptr = vtophys(mtod(m, vm_offset_t)); 1688 if (cnt != 0) 1689 f->nge_ctl |= NGE_CMDSTS_OWN; 1690 cur = frag; 1691 NGE_INC(frag, NGE_TX_LIST_CNT); 1692 cnt++; 1693 } 1694 } 1695 1696 if (m != NULL) 1697 return(ENOBUFS); 1698 1699 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts = 0; 1700 if (m_head->m_pkthdr.csum_flags) { 1701 if (m_head->m_pkthdr.csum_flags & CSUM_IP) 1702 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1703 NGE_TXEXTSTS_IPCSUM; 1704 if (m_head->m_pkthdr.csum_flags & CSUM_TCP) 1705 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1706 NGE_TXEXTSTS_TCPCSUM; 1707 if (m_head->m_pkthdr.csum_flags & CSUM_UDP) 1708 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1709 NGE_TXEXTSTS_UDPCSUM; 1710 } 1711 1712 mtag = VLAN_OUTPUT_TAG(&sc->arpcom.ac_if, m); 1713 if (mtag != NULL) { 1714 sc->nge_ldata->nge_tx_list[cur].nge_extsts |= 1715 (NGE_TXEXTSTS_VLANPKT|htons(VLAN_TAG_VALUE(mtag))); 1716 } 1717 1718 sc->nge_ldata->nge_tx_list[cur].nge_mbuf = m_head; 1719 sc->nge_ldata->nge_tx_list[cur].nge_ctl &= ~NGE_CMDSTS_MORE; 1720 sc->nge_ldata->nge_tx_list[*txidx].nge_ctl |= NGE_CMDSTS_OWN; 1721 sc->nge_cdata.nge_tx_cnt += cnt; 1722 *txidx = frag; 1723 1724 return(0); 1725} 1726 1727/* 1728 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1729 * to the mbuf data regions directly in the transmit lists. We also save a 1730 * copy of the pointers since the transmit list fragment pointers are 1731 * physical addresses. 1732 */ 1733 1734static void 1735nge_start(ifp) 1736 struct ifnet *ifp; 1737{ 1738 struct nge_softc *sc; 1739 struct mbuf *m_head = NULL; 1740 u_int32_t idx; 1741 1742 sc = ifp->if_softc; 1743 1744 if (!sc->nge_link) 1745 return; 1746 1747 idx = sc->nge_cdata.nge_tx_prod; 1748 1749 if (ifp->if_flags & IFF_OACTIVE) 1750 return; 1751 1752 while(sc->nge_ldata->nge_tx_list[idx].nge_mbuf == NULL) { 1753 IF_DEQUEUE(&ifp->if_snd, m_head); 1754 if (m_head == NULL) 1755 break; 1756 1757 if (nge_encap(sc, m_head, &idx)) { 1758 IF_PREPEND(&ifp->if_snd, m_head); 1759 ifp->if_flags |= IFF_OACTIVE; 1760 break; 1761 } 1762 1763 /* 1764 * If there's a BPF listener, bounce a copy of this frame 1765 * to him. 1766 */ 1767 BPF_MTAP(ifp, m_head); 1768 1769 } 1770 1771 /* Transmit */ 1772 sc->nge_cdata.nge_tx_prod = idx; 1773 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_ENABLE); 1774 1775 /* 1776 * Set a timeout in case the chip goes out to lunch. 1777 */ 1778 ifp->if_timer = 5; 1779 1780 return; 1781} 1782 1783static void 1784nge_init(xsc) 1785 void *xsc; 1786{ 1787 struct nge_softc *sc = xsc; 1788 struct ifnet *ifp = &sc->arpcom.ac_if; 1789 struct mii_data *mii; 1790 int s; 1791 1792 if (ifp->if_flags & IFF_RUNNING) 1793 return; 1794 1795 s = splimp(); 1796 1797 /* 1798 * Cancel pending I/O and free all RX/TX buffers. 1799 */ 1800 nge_stop(sc); 1801 1802 if (sc->nge_tbi) { 1803 mii = NULL; 1804 } else { 1805 mii = device_get_softc(sc->nge_miibus); 1806 } 1807 1808 /* Set MAC address */ 1809 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR0); 1810 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1811 ((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 1812 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR1); 1813 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1814 ((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 1815 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR2); 1816 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1817 ((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 1818 1819 /* Init circular RX list. */ 1820 if (nge_list_rx_init(sc) == ENOBUFS) { 1821 printf("nge%d: initialization failed: no " 1822 "memory for rx buffers\n", sc->nge_unit); 1823 nge_stop(sc); 1824 (void)splx(s); 1825 return; 1826 } 1827 1828 /* 1829 * Init tx descriptors. 1830 */ 1831 nge_list_tx_init(sc); 1832 1833 /* 1834 * For the NatSemi chip, we have to explicitly enable the 1835 * reception of ARP frames, as well as turn on the 'perfect 1836 * match' filter where we store the station address, otherwise 1837 * we won't receive unicasts meant for this host. 1838 */ 1839 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ARP); 1840 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_PERFECT); 1841 1842 /* If we want promiscuous mode, set the allframes bit. */ 1843 if (ifp->if_flags & IFF_PROMISC) { 1844 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1845 } else { 1846 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1847 } 1848 1849 /* 1850 * Set the capture broadcast bit to capture broadcast frames. 1851 */ 1852 if (ifp->if_flags & IFF_BROADCAST) { 1853 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1854 } else { 1855 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1856 } 1857 1858 /* 1859 * Load the multicast filter. 1860 */ 1861 nge_setmulti(sc); 1862 1863 /* Turn the receive filter on */ 1864 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ENABLE); 1865 1866 /* 1867 * Load the address of the RX and TX lists. 1868 */ 1869 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 1870 vtophys(&sc->nge_ldata->nge_rx_list[0])); 1871 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 1872 vtophys(&sc->nge_ldata->nge_tx_list[0])); 1873 1874 /* Set RX configuration */ 1875 CSR_WRITE_4(sc, NGE_RX_CFG, NGE_RXCFG); 1876 /* 1877 * Enable hardware checksum validation for all IPv4 1878 * packets, do not reject packets with bad checksums. 1879 */ 1880 CSR_WRITE_4(sc, NGE_VLAN_IP_RXCTL, NGE_VIPRXCTL_IPCSUM_ENB); 1881 1882 /* 1883 * Tell the chip to detect and strip VLAN tag info from 1884 * received frames. The tag will be provided in the extsts 1885 * field in the RX descriptors. 1886 */ 1887 NGE_SETBIT(sc, NGE_VLAN_IP_RXCTL, 1888 NGE_VIPRXCTL_TAG_DETECT_ENB|NGE_VIPRXCTL_TAG_STRIP_ENB); 1889 1890 /* Set TX configuration */ 1891 CSR_WRITE_4(sc, NGE_TX_CFG, NGE_TXCFG); 1892 1893 /* 1894 * Enable TX IPv4 checksumming on a per-packet basis. 1895 */ 1896 CSR_WRITE_4(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_CSUM_PER_PKT); 1897 1898 /* 1899 * Tell the chip to insert VLAN tags on a per-packet basis as 1900 * dictated by the code in the frame encapsulation routine. 1901 */ 1902 NGE_SETBIT(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_TAG_PER_PKT); 1903 1904 /* Set full/half duplex mode. */ 1905 if (sc->nge_tbi) { 1906 if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 1907 == IFM_FDX) { 1908 NGE_SETBIT(sc, NGE_TX_CFG, 1909 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1910 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1911 } else { 1912 NGE_CLRBIT(sc, NGE_TX_CFG, 1913 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1914 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1915 } 1916 } else { 1917 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 1918 NGE_SETBIT(sc, NGE_TX_CFG, 1919 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1920 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1921 } else { 1922 NGE_CLRBIT(sc, NGE_TX_CFG, 1923 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1924 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1925 } 1926 } 1927 1928 nge_tick(sc); 1929 1930 /* 1931 * Enable the delivery of PHY interrupts based on 1932 * link/speed/duplex status changes. Also enable the 1933 * extsts field in the DMA descriptors (needed for 1934 * TCP/IP checksum offload on transmit). 1935 */ 1936 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_PHYINTR_SPD| 1937 NGE_CFG_PHYINTR_LNK|NGE_CFG_PHYINTR_DUP|NGE_CFG_EXTSTS_ENB); 1938 1939 /* 1940 * Configure interrupt holdoff (moderation). We can 1941 * have the chip delay interrupt delivery for a certain 1942 * period. Units are in 100us, and the max setting 1943 * is 25500us (0xFF x 100us). Default is a 100us holdoff. 1944 */ 1945 CSR_WRITE_4(sc, NGE_IHR, 0x01); 1946 1947 /* 1948 * Enable interrupts. 1949 */ 1950 CSR_WRITE_4(sc, NGE_IMR, NGE_INTRS); 1951#ifdef DEVICE_POLLING 1952 /* 1953 * ... only enable interrupts if we are not polling, make sure 1954 * they are off otherwise. 1955 */ 1956 if (ifp->if_flags & IFF_POLLING) 1957 CSR_WRITE_4(sc, NGE_IER, 0); 1958 else 1959#endif /* DEVICE_POLLING */ 1960 CSR_WRITE_4(sc, NGE_IER, 1); 1961 1962 /* Enable receiver and transmitter. */ 1963 NGE_CLRBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE); 1964 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1965 1966 nge_ifmedia_upd(ifp); 1967 1968 ifp->if_flags |= IFF_RUNNING; 1969 ifp->if_flags &= ~IFF_OACTIVE; 1970 1971 (void)splx(s); 1972 1973 return; 1974} 1975 1976/* 1977 * Set media options. 1978 */ 1979static int 1980nge_ifmedia_upd(ifp) 1981 struct ifnet *ifp; 1982{ 1983 struct nge_softc *sc; 1984 struct mii_data *mii; 1985 1986 sc = ifp->if_softc; 1987 1988 if (sc->nge_tbi) { 1989 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 1990 == IFM_AUTO) { 1991 CSR_WRITE_4(sc, NGE_TBI_ANAR, 1992 CSR_READ_4(sc, NGE_TBI_ANAR) 1993 | NGE_TBIANAR_HDX | NGE_TBIANAR_FDX 1994 | NGE_TBIANAR_PS1 | NGE_TBIANAR_PS2); 1995 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG 1996 | NGE_TBIBMCR_RESTART_ANEG); 1997 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG); 1998 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media 1999 & IFM_GMASK) == IFM_FDX) { 2000 NGE_SETBIT(sc, NGE_TX_CFG, 2001 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 2002 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 2003 2004 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 2005 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 2006 } else { 2007 NGE_CLRBIT(sc, NGE_TX_CFG, 2008 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 2009 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 2010 2011 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 2012 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 2013 } 2014 2015 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 2016 & ~NGE_GPIO_GP3_OUT); 2017 } else { 2018 mii = device_get_softc(sc->nge_miibus); 2019 sc->nge_link = 0; 2020 if (mii->mii_instance) { 2021 struct mii_softc *miisc; 2022 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL; 2023 miisc = LIST_NEXT(miisc, mii_list)) 2024 mii_phy_reset(miisc); 2025 } 2026 mii_mediachg(mii); 2027 } 2028 2029 return(0); 2030} 2031 2032/* 2033 * Report current media status. 2034 */ 2035static void 2036nge_ifmedia_sts(ifp, ifmr) 2037 struct ifnet *ifp; 2038 struct ifmediareq *ifmr; 2039{ 2040 struct nge_softc *sc; 2041 struct mii_data *mii; 2042 2043 sc = ifp->if_softc; 2044 2045 if (sc->nge_tbi) { 2046 ifmr->ifm_status = IFM_AVALID; 2047 ifmr->ifm_active = IFM_ETHER; 2048 2049 if (CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE) { 2050 ifmr->ifm_status |= IFM_ACTIVE; 2051 } 2052 if (CSR_READ_4(sc, NGE_TBI_BMCR) & NGE_TBIBMCR_LOOPBACK) 2053 ifmr->ifm_active |= IFM_LOOP; 2054 if (!CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE) { 2055 ifmr->ifm_active |= IFM_NONE; 2056 ifmr->ifm_status = 0; 2057 return; 2058 } 2059 ifmr->ifm_active |= IFM_1000_SX; 2060 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 2061 == IFM_AUTO) { 2062 ifmr->ifm_active |= IFM_AUTO; 2063 if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 2064 & NGE_TBIANAR_FDX) { 2065 ifmr->ifm_active |= IFM_FDX; 2066 }else if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 2067 & NGE_TBIANAR_HDX) { 2068 ifmr->ifm_active |= IFM_HDX; 2069 } 2070 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 2071 == IFM_FDX) 2072 ifmr->ifm_active |= IFM_FDX; 2073 else 2074 ifmr->ifm_active |= IFM_HDX; 2075 2076 } else { 2077 mii = device_get_softc(sc->nge_miibus); 2078 mii_pollstat(mii); 2079 ifmr->ifm_active = mii->mii_media_active; 2080 ifmr->ifm_status = mii->mii_media_status; 2081 } 2082 2083 return; 2084} 2085 2086static int 2087nge_ioctl(ifp, command, data) 2088 struct ifnet *ifp; 2089 u_long command; 2090 caddr_t data; 2091{ 2092 struct nge_softc *sc = ifp->if_softc; 2093 struct ifreq *ifr = (struct ifreq *) data; 2094 struct mii_data *mii; 2095 int s, error = 0; 2096 2097 s = splimp(); 2098 2099 switch(command) { 2100 case SIOCSIFMTU: 2101 if (ifr->ifr_mtu > NGE_JUMBO_MTU) 2102 error = EINVAL; 2103 else { 2104 ifp->if_mtu = ifr->ifr_mtu; 2105 /* 2106 * Workaround: if the MTU is larger than 2107 * 8152 (TX FIFO size minus 64 minus 18), turn off 2108 * TX checksum offloading. 2109 */ 2110 if (ifr->ifr_mtu >= 8152) 2111 ifp->if_hwassist = 0; 2112 else 2113 ifp->if_hwassist = NGE_CSUM_FEATURES; 2114 } 2115 break; 2116 case SIOCSIFFLAGS: 2117 if (ifp->if_flags & IFF_UP) { 2118 if (ifp->if_flags & IFF_RUNNING && 2119 ifp->if_flags & IFF_PROMISC && 2120 !(sc->nge_if_flags & IFF_PROMISC)) { 2121 NGE_SETBIT(sc, NGE_RXFILT_CTL, 2122 NGE_RXFILTCTL_ALLPHYS| 2123 NGE_RXFILTCTL_ALLMULTI); 2124 } else if (ifp->if_flags & IFF_RUNNING && 2125 !(ifp->if_flags & IFF_PROMISC) && 2126 sc->nge_if_flags & IFF_PROMISC) { 2127 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2128 NGE_RXFILTCTL_ALLPHYS); 2129 if (!(ifp->if_flags & IFF_ALLMULTI)) 2130 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2131 NGE_RXFILTCTL_ALLMULTI); 2132 } else { 2133 ifp->if_flags &= ~IFF_RUNNING; 2134 nge_init(sc); 2135 } 2136 } else { 2137 if (ifp->if_flags & IFF_RUNNING) 2138 nge_stop(sc); 2139 } 2140 sc->nge_if_flags = ifp->if_flags; 2141 error = 0; 2142 break; 2143 case SIOCADDMULTI: 2144 case SIOCDELMULTI: 2145 nge_setmulti(sc); 2146 error = 0; 2147 break; 2148 case SIOCGIFMEDIA: 2149 case SIOCSIFMEDIA: 2150 if (sc->nge_tbi) { 2151 error = ifmedia_ioctl(ifp, ifr, &sc->nge_ifmedia, 2152 command); 2153 } else { 2154 mii = device_get_softc(sc->nge_miibus); 2155 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, 2156 command); 2157 } 2158 break; 2159 default: 2160 error = ether_ioctl(ifp, command, data); 2161 break; 2162 } 2163 2164 (void)splx(s); 2165 2166 return(error); 2167} 2168 2169static void 2170nge_watchdog(ifp) 2171 struct ifnet *ifp; 2172{ 2173 struct nge_softc *sc; 2174 2175 sc = ifp->if_softc; 2176 2177 ifp->if_oerrors++; 2178 printf("nge%d: watchdog timeout\n", sc->nge_unit); 2179 2180 nge_stop(sc); 2181 nge_reset(sc); 2182 ifp->if_flags &= ~IFF_RUNNING; 2183 nge_init(sc); 2184 2185 if (ifp->if_snd.ifq_head != NULL) 2186 nge_start(ifp); 2187 2188 return; 2189} 2190 2191/* 2192 * Stop the adapter and free any mbufs allocated to the 2193 * RX and TX lists. 2194 */ 2195static void 2196nge_stop(sc) 2197 struct nge_softc *sc; 2198{ 2199 register int i; 2200 struct ifnet *ifp; 2201 struct mii_data *mii; 2202 2203 ifp = &sc->arpcom.ac_if; 2204 ifp->if_timer = 0; 2205 if (sc->nge_tbi) { 2206 mii = NULL; 2207 } else { 2208 mii = device_get_softc(sc->nge_miibus); 2209 } 2210 2211 untimeout(nge_tick, sc, sc->nge_stat_ch); 2212#ifdef DEVICE_POLLING 2213 ether_poll_deregister(ifp); 2214#endif 2215 CSR_WRITE_4(sc, NGE_IER, 0); 2216 CSR_WRITE_4(sc, NGE_IMR, 0); 2217 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE); 2218 DELAY(1000); 2219 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 0); 2220 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 0); 2221 2222 if (!sc->nge_tbi) 2223 mii_down(mii); 2224 2225 sc->nge_link = 0; 2226 2227 /* 2228 * Free data in the RX lists. 2229 */ 2230 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 2231 if (sc->nge_ldata->nge_rx_list[i].nge_mbuf != NULL) { 2232 m_freem(sc->nge_ldata->nge_rx_list[i].nge_mbuf); 2233 sc->nge_ldata->nge_rx_list[i].nge_mbuf = NULL; 2234 } 2235 } 2236 bzero((char *)&sc->nge_ldata->nge_rx_list, 2237 sizeof(sc->nge_ldata->nge_rx_list)); 2238 2239 /* 2240 * Free the TX list buffers. 2241 */ 2242 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 2243 if (sc->nge_ldata->nge_tx_list[i].nge_mbuf != NULL) { 2244 m_freem(sc->nge_ldata->nge_tx_list[i].nge_mbuf); 2245 sc->nge_ldata->nge_tx_list[i].nge_mbuf = NULL; 2246 } 2247 } 2248 2249 bzero((char *)&sc->nge_ldata->nge_tx_list, 2250 sizeof(sc->nge_ldata->nge_tx_list)); 2251 2252 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2253 2254 return; 2255} 2256 2257/* 2258 * Stop all chip I/O so that the kernel's probe routines don't 2259 * get confused by errant DMAs when rebooting. 2260 */ 2261static void 2262nge_shutdown(dev) 2263 device_t dev; 2264{ 2265 struct nge_softc *sc; 2266 2267 sc = device_get_softc(dev); 2268 2269 nge_reset(sc); 2270 nge_stop(sc); 2271 2272 return; 2273} 2274