if_nge.c revision 113038
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/* 35 * National Semiconductor DP83820/DP83821 gigabit ethernet driver 36 * for FreeBSD. Datasheets are available from: 37 * 38 * http://www.national.com/ds/DP/DP83820.pdf 39 * http://www.national.com/ds/DP/DP83821.pdf 40 * 41 * These chips are used on several low cost gigabit ethernet NICs 42 * sold by D-Link, Addtron, SMC and Asante. Both parts are 43 * virtually the same, except the 83820 is a 64-bit/32-bit part, 44 * while the 83821 is 32-bit only. 45 * 46 * Many cards also use National gigE transceivers, such as the 47 * DP83891, DP83861 and DP83862 gigPHYTER parts. The DP83861 datasheet 48 * contains a full register description that applies to all of these 49 * components: 50 * 51 * http://www.national.com/ds/DP/DP83861.pdf 52 * 53 * Written by Bill Paul <wpaul@bsdi.com> 54 * BSDi Open Source Solutions 55 */ 56 57/* 58 * The NatSemi DP83820 and 83821 controllers are enhanced versions 59 * of the NatSemi MacPHYTER 10/100 devices. They support 10, 100 60 * and 1000Mbps speeds with 1000baseX (ten bit interface), MII and GMII 61 * ports. Other features include 8K TX FIFO and 32K RX FIFO, TCP/IP 62 * hardware checksum offload (IPv4 only), VLAN tagging and filtering, 63 * priority TX and RX queues, a 2048 bit multicast hash filter, 4 RX pattern 64 * matching buffers, one perfect address filter buffer and interrupt 65 * moderation. The 83820 supports both 64-bit and 32-bit addressing 66 * and data transfers: the 64-bit support can be toggled on or off 67 * via software. This affects the size of certain fields in the DMA 68 * descriptors. 69 * 70 * There are two bugs/misfeatures in the 83820/83821 that I have 71 * discovered so far: 72 * 73 * - Receive buffers must be aligned on 64-bit boundaries, which means 74 * you must resort to copying data in order to fix up the payload 75 * alignment. 76 * 77 * - In order to transmit jumbo frames larger than 8170 bytes, you have 78 * to turn off transmit checksum offloading, because the chip can't 79 * compute the checksum on an outgoing frame unless it fits entirely 80 * within the TX FIFO, which is only 8192 bytes in size. If you have 81 * TX checksum offload enabled and you transmit attempt to transmit a 82 * frame larger than 8170 bytes, the transmitter will wedge. 83 * 84 * To work around the latter problem, TX checksum offload is disabled 85 * if the user selects an MTU larger than 8152 (8170 - 18). 86 */ 87 88#include <sys/cdefs.h> 89__FBSDID("$FreeBSD: head/sys/dev/nge/if_nge.c 113038 2003-04-03 21:36:33Z obrien $"); 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 <pci/pcireg.h> 123#include <pci/pcivar.h> 124 125#define NGE_USEIOSPACE 126 127#include <dev/nge/if_ngereg.h> 128 129MODULE_DEPEND(nge, miibus, 1, 1, 1); 130 131/* "controller miibus0" required. See GENERIC if you get errors here. */ 132#include "miibus_if.h" 133 134#define NGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 135 136/* 137 * Various supported device vendors/types and their names. 138 */ 139static struct nge_type nge_devs[] = { 140 { NGE_VENDORID, NGE_DEVICEID, 141 "National Semiconductor Gigabit Ethernet" }, 142 { 0, 0, NULL } 143}; 144 145static int nge_probe(device_t); 146static int nge_attach(device_t); 147static int nge_detach(device_t); 148 149static int nge_alloc_jumbo_mem(struct nge_softc *); 150static void nge_free_jumbo_mem(struct nge_softc *); 151static void *nge_jalloc(struct nge_softc *); 152static void nge_jfree(void *, void *); 153 154static int nge_newbuf(struct nge_softc *, struct nge_desc *, struct mbuf *); 155static int nge_encap(struct nge_softc *, struct mbuf *, u_int32_t *); 156static void nge_rxeof(struct nge_softc *); 157static void nge_txeof(struct nge_softc *); 158static void nge_intr(void *); 159static void nge_tick(void *); 160static void nge_start(struct ifnet *); 161static int nge_ioctl(struct ifnet *, u_long, caddr_t); 162static void nge_init(void *); 163static void nge_stop(struct nge_softc *); 164static void nge_watchdog(struct ifnet *); 165static void nge_shutdown(device_t); 166static int nge_ifmedia_upd(struct ifnet *); 167static void nge_ifmedia_sts(struct ifnet *, struct ifmediareq *); 168 169static void nge_delay(struct nge_softc *); 170static void nge_eeprom_idle(struct nge_softc *); 171static void nge_eeprom_putbyte(struct nge_softc *, int); 172static void nge_eeprom_getword(struct nge_softc *, int, u_int16_t *); 173static void nge_read_eeprom(struct nge_softc *, caddr_t, int, int, int); 174 175static void nge_mii_sync(struct nge_softc *); 176static void nge_mii_send(struct nge_softc *, u_int32_t, int); 177static int nge_mii_readreg(struct nge_softc *, struct nge_mii_frame *); 178static int nge_mii_writereg(struct nge_softc *, struct nge_mii_frame *); 179 180static int nge_miibus_readreg(device_t, int, int); 181static int nge_miibus_writereg(device_t, int, int, int); 182static void nge_miibus_statchg(device_t); 183 184static void nge_setmulti(struct nge_softc *); 185static u_int32_t nge_crc(struct nge_softc *, caddr_t); 186static void nge_reset(struct nge_softc *); 187static int nge_list_rx_init(struct nge_softc *); 188static int nge_list_tx_init(struct nge_softc *); 189 190#ifdef NGE_USEIOSPACE 191#define NGE_RES SYS_RES_IOPORT 192#define NGE_RID NGE_PCI_LOIO 193#else 194#define NGE_RES SYS_RES_MEMORY 195#define NGE_RID NGE_PCI_LOMEM 196#endif 197 198static device_method_t nge_methods[] = { 199 /* Device interface */ 200 DEVMETHOD(device_probe, nge_probe), 201 DEVMETHOD(device_attach, nge_attach), 202 DEVMETHOD(device_detach, nge_detach), 203 DEVMETHOD(device_shutdown, nge_shutdown), 204 205 /* bus interface */ 206 DEVMETHOD(bus_print_child, bus_generic_print_child), 207 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 208 209 /* MII interface */ 210 DEVMETHOD(miibus_readreg, nge_miibus_readreg), 211 DEVMETHOD(miibus_writereg, nge_miibus_writereg), 212 DEVMETHOD(miibus_statchg, nge_miibus_statchg), 213 214 { 0, 0 } 215}; 216 217static driver_t nge_driver = { 218 "nge", 219 nge_methods, 220 sizeof(struct nge_softc) 221}; 222 223static devclass_t nge_devclass; 224 225DRIVER_MODULE(if_nge, pci, nge_driver, nge_devclass, 0, 0); 226DRIVER_MODULE(miibus, nge, miibus_driver, miibus_devclass, 0, 0); 227 228#define NGE_SETBIT(sc, reg, x) \ 229 CSR_WRITE_4(sc, reg, \ 230 CSR_READ_4(sc, reg) | (x)) 231 232#define NGE_CLRBIT(sc, reg, x) \ 233 CSR_WRITE_4(sc, reg, \ 234 CSR_READ_4(sc, reg) & ~(x)) 235 236#define SIO_SET(x) \ 237 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) | (x)) 238 239#define SIO_CLR(x) \ 240 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) & ~(x)) 241 242static void 243nge_delay(sc) 244 struct nge_softc *sc; 245{ 246 int idx; 247 248 for (idx = (300 / 33) + 1; idx > 0; idx--) 249 CSR_READ_4(sc, NGE_CSR); 250 251 return; 252} 253 254static void 255nge_eeprom_idle(sc) 256 struct nge_softc *sc; 257{ 258 register int i; 259 260 SIO_SET(NGE_MEAR_EE_CSEL); 261 nge_delay(sc); 262 SIO_SET(NGE_MEAR_EE_CLK); 263 nge_delay(sc); 264 265 for (i = 0; i < 25; i++) { 266 SIO_CLR(NGE_MEAR_EE_CLK); 267 nge_delay(sc); 268 SIO_SET(NGE_MEAR_EE_CLK); 269 nge_delay(sc); 270 } 271 272 SIO_CLR(NGE_MEAR_EE_CLK); 273 nge_delay(sc); 274 SIO_CLR(NGE_MEAR_EE_CSEL); 275 nge_delay(sc); 276 CSR_WRITE_4(sc, NGE_MEAR, 0x00000000); 277 278 return; 279} 280 281/* 282 * Send a read command and address to the EEPROM, check for ACK. 283 */ 284static void 285nge_eeprom_putbyte(sc, addr) 286 struct nge_softc *sc; 287 int addr; 288{ 289 register int d, i; 290 291 d = addr | NGE_EECMD_READ; 292 293 /* 294 * Feed in each bit and stobe the clock. 295 */ 296 for (i = 0x400; i; i >>= 1) { 297 if (d & i) { 298 SIO_SET(NGE_MEAR_EE_DIN); 299 } else { 300 SIO_CLR(NGE_MEAR_EE_DIN); 301 } 302 nge_delay(sc); 303 SIO_SET(NGE_MEAR_EE_CLK); 304 nge_delay(sc); 305 SIO_CLR(NGE_MEAR_EE_CLK); 306 nge_delay(sc); 307 } 308 309 return; 310} 311 312/* 313 * Read a word of data stored in the EEPROM at address 'addr.' 314 */ 315static void 316nge_eeprom_getword(sc, addr, dest) 317 struct nge_softc *sc; 318 int addr; 319 u_int16_t *dest; 320{ 321 register int i; 322 u_int16_t word = 0; 323 324 /* Force EEPROM to idle state. */ 325 nge_eeprom_idle(sc); 326 327 /* Enter EEPROM access mode. */ 328 nge_delay(sc); 329 SIO_CLR(NGE_MEAR_EE_CLK); 330 nge_delay(sc); 331 SIO_SET(NGE_MEAR_EE_CSEL); 332 nge_delay(sc); 333 334 /* 335 * Send address of word we want to read. 336 */ 337 nge_eeprom_putbyte(sc, addr); 338 339 /* 340 * Start reading bits from EEPROM. 341 */ 342 for (i = 0x8000; i; i >>= 1) { 343 SIO_SET(NGE_MEAR_EE_CLK); 344 nge_delay(sc); 345 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_EE_DOUT) 346 word |= i; 347 nge_delay(sc); 348 SIO_CLR(NGE_MEAR_EE_CLK); 349 nge_delay(sc); 350 } 351 352 /* Turn off EEPROM access mode. */ 353 nge_eeprom_idle(sc); 354 355 *dest = word; 356 357 return; 358} 359 360/* 361 * Read a sequence of words from the EEPROM. 362 */ 363static void 364nge_read_eeprom(sc, dest, off, cnt, swap) 365 struct nge_softc *sc; 366 caddr_t dest; 367 int off; 368 int cnt; 369 int swap; 370{ 371 int i; 372 u_int16_t word = 0, *ptr; 373 374 for (i = 0; i < cnt; i++) { 375 nge_eeprom_getword(sc, off + i, &word); 376 ptr = (u_int16_t *)(dest + (i * 2)); 377 if (swap) 378 *ptr = ntohs(word); 379 else 380 *ptr = word; 381 } 382 383 return; 384} 385 386/* 387 * Sync the PHYs by setting data bit and strobing the clock 32 times. 388 */ 389static void 390nge_mii_sync(sc) 391 struct nge_softc *sc; 392{ 393 register int i; 394 395 SIO_SET(NGE_MEAR_MII_DIR|NGE_MEAR_MII_DATA); 396 397 for (i = 0; i < 32; i++) { 398 SIO_SET(NGE_MEAR_MII_CLK); 399 DELAY(1); 400 SIO_CLR(NGE_MEAR_MII_CLK); 401 DELAY(1); 402 } 403 404 return; 405} 406 407/* 408 * Clock a series of bits through the MII. 409 */ 410static void 411nge_mii_send(sc, bits, cnt) 412 struct nge_softc *sc; 413 u_int32_t bits; 414 int cnt; 415{ 416 int i; 417 418 SIO_CLR(NGE_MEAR_MII_CLK); 419 420 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 421 if (bits & i) { 422 SIO_SET(NGE_MEAR_MII_DATA); 423 } else { 424 SIO_CLR(NGE_MEAR_MII_DATA); 425 } 426 DELAY(1); 427 SIO_CLR(NGE_MEAR_MII_CLK); 428 DELAY(1); 429 SIO_SET(NGE_MEAR_MII_CLK); 430 } 431} 432 433/* 434 * Read an PHY register through the MII. 435 */ 436static int 437nge_mii_readreg(sc, frame) 438 struct nge_softc *sc; 439 struct nge_mii_frame *frame; 440 441{ 442 int i, ack, s; 443 444 s = splimp(); 445 446 /* 447 * Set up frame for RX. 448 */ 449 frame->mii_stdelim = NGE_MII_STARTDELIM; 450 frame->mii_opcode = NGE_MII_READOP; 451 frame->mii_turnaround = 0; 452 frame->mii_data = 0; 453 454 CSR_WRITE_4(sc, NGE_MEAR, 0); 455 456 /* 457 * Turn on data xmit. 458 */ 459 SIO_SET(NGE_MEAR_MII_DIR); 460 461 nge_mii_sync(sc); 462 463 /* 464 * Send command/address info. 465 */ 466 nge_mii_send(sc, frame->mii_stdelim, 2); 467 nge_mii_send(sc, frame->mii_opcode, 2); 468 nge_mii_send(sc, frame->mii_phyaddr, 5); 469 nge_mii_send(sc, frame->mii_regaddr, 5); 470 471 /* Idle bit */ 472 SIO_CLR((NGE_MEAR_MII_CLK|NGE_MEAR_MII_DATA)); 473 DELAY(1); 474 SIO_SET(NGE_MEAR_MII_CLK); 475 DELAY(1); 476 477 /* Turn off xmit. */ 478 SIO_CLR(NGE_MEAR_MII_DIR); 479 /* Check for ack */ 480 SIO_CLR(NGE_MEAR_MII_CLK); 481 DELAY(1); 482 ack = CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA; 483 SIO_SET(NGE_MEAR_MII_CLK); 484 DELAY(1); 485 486 /* 487 * Now try reading data bits. If the ack failed, we still 488 * need to clock through 16 cycles to keep the PHY(s) in sync. 489 */ 490 if (ack) { 491 for(i = 0; i < 16; i++) { 492 SIO_CLR(NGE_MEAR_MII_CLK); 493 DELAY(1); 494 SIO_SET(NGE_MEAR_MII_CLK); 495 DELAY(1); 496 } 497 goto fail; 498 } 499 500 for (i = 0x8000; i; i >>= 1) { 501 SIO_CLR(NGE_MEAR_MII_CLK); 502 DELAY(1); 503 if (!ack) { 504 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA) 505 frame->mii_data |= i; 506 DELAY(1); 507 } 508 SIO_SET(NGE_MEAR_MII_CLK); 509 DELAY(1); 510 } 511 512fail: 513 514 SIO_CLR(NGE_MEAR_MII_CLK); 515 DELAY(1); 516 SIO_SET(NGE_MEAR_MII_CLK); 517 DELAY(1); 518 519 splx(s); 520 521 if (ack) 522 return(1); 523 return(0); 524} 525 526/* 527 * Write to a PHY register through the MII. 528 */ 529static int 530nge_mii_writereg(sc, frame) 531 struct nge_softc *sc; 532 struct nge_mii_frame *frame; 533 534{ 535 int s; 536 537 s = splimp(); 538 /* 539 * Set up frame for TX. 540 */ 541 542 frame->mii_stdelim = NGE_MII_STARTDELIM; 543 frame->mii_opcode = NGE_MII_WRITEOP; 544 frame->mii_turnaround = NGE_MII_TURNAROUND; 545 546 /* 547 * Turn on data output. 548 */ 549 SIO_SET(NGE_MEAR_MII_DIR); 550 551 nge_mii_sync(sc); 552 553 nge_mii_send(sc, frame->mii_stdelim, 2); 554 nge_mii_send(sc, frame->mii_opcode, 2); 555 nge_mii_send(sc, frame->mii_phyaddr, 5); 556 nge_mii_send(sc, frame->mii_regaddr, 5); 557 nge_mii_send(sc, frame->mii_turnaround, 2); 558 nge_mii_send(sc, frame->mii_data, 16); 559 560 /* Idle bit. */ 561 SIO_SET(NGE_MEAR_MII_CLK); 562 DELAY(1); 563 SIO_CLR(NGE_MEAR_MII_CLK); 564 DELAY(1); 565 566 /* 567 * Turn off xmit. 568 */ 569 SIO_CLR(NGE_MEAR_MII_DIR); 570 571 splx(s); 572 573 return(0); 574} 575 576static int 577nge_miibus_readreg(dev, phy, reg) 578 device_t dev; 579 int phy, reg; 580{ 581 struct nge_softc *sc; 582 struct nge_mii_frame frame; 583 584 sc = device_get_softc(dev); 585 586 bzero((char *)&frame, sizeof(frame)); 587 588 frame.mii_phyaddr = phy; 589 frame.mii_regaddr = reg; 590 nge_mii_readreg(sc, &frame); 591 592 return(frame.mii_data); 593} 594 595static int 596nge_miibus_writereg(dev, phy, reg, data) 597 device_t dev; 598 int phy, reg, data; 599{ 600 struct nge_softc *sc; 601 struct nge_mii_frame frame; 602 603 sc = device_get_softc(dev); 604 605 bzero((char *)&frame, sizeof(frame)); 606 607 frame.mii_phyaddr = phy; 608 frame.mii_regaddr = reg; 609 frame.mii_data = data; 610 nge_mii_writereg(sc, &frame); 611 612 return(0); 613} 614 615static void 616nge_miibus_statchg(dev) 617 device_t dev; 618{ 619 int status; 620 struct nge_softc *sc; 621 struct mii_data *mii; 622 623 sc = device_get_softc(dev); 624 if (sc->nge_tbi) { 625 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 626 == IFM_AUTO) { 627 status = CSR_READ_4(sc, NGE_TBI_ANLPAR); 628 if (status == 0 || status & NGE_TBIANAR_FDX) { 629 NGE_SETBIT(sc, NGE_TX_CFG, 630 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 631 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 632 } else { 633 NGE_CLRBIT(sc, NGE_TX_CFG, 634 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 635 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 636 } 637 638 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 639 != IFM_FDX) { 640 NGE_CLRBIT(sc, NGE_TX_CFG, 641 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 642 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 643 } else { 644 NGE_SETBIT(sc, NGE_TX_CFG, 645 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 646 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 647 } 648 } else { 649 mii = device_get_softc(sc->nge_miibus); 650 651 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 652 NGE_SETBIT(sc, NGE_TX_CFG, 653 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 654 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 655 } else { 656 NGE_CLRBIT(sc, NGE_TX_CFG, 657 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 658 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 659 } 660 661 /* If we have a 1000Mbps link, set the mode_1000 bit. */ 662 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T || 663 IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) { 664 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 665 } else { 666 NGE_CLRBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 667 } 668 } 669 return; 670} 671 672static u_int32_t 673nge_crc(sc, addr) 674 struct nge_softc *sc; 675 caddr_t addr; 676{ 677 u_int32_t crc, carry; 678 int i, j; 679 u_int8_t c; 680 681 /* Compute CRC for the address value. */ 682 crc = 0xFFFFFFFF; /* initial value */ 683 684 for (i = 0; i < 6; i++) { 685 c = *(addr + i); 686 for (j = 0; j < 8; j++) { 687 carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); 688 crc <<= 1; 689 c >>= 1; 690 if (carry) 691 crc = (crc ^ 0x04c11db6) | carry; 692 } 693 } 694 695 /* 696 * return the filter bit position 697 */ 698 699 return((crc >> 21) & 0x00000FFF); 700} 701 702static void 703nge_setmulti(sc) 704 struct nge_softc *sc; 705{ 706 struct ifnet *ifp; 707 struct ifmultiaddr *ifma; 708 u_int32_t h = 0, i, filtsave; 709 int bit, index; 710 711 ifp = &sc->arpcom.ac_if; 712 713 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 714 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 715 NGE_RXFILTCTL_MCHASH|NGE_RXFILTCTL_UCHASH); 716 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLMULTI); 717 return; 718 } 719 720 /* 721 * We have to explicitly enable the multicast hash table 722 * on the NatSemi chip if we want to use it, which we do. 723 * We also have to tell it that we don't want to use the 724 * hash table for matching unicast addresses. 725 */ 726 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_MCHASH); 727 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 728 NGE_RXFILTCTL_ALLMULTI|NGE_RXFILTCTL_UCHASH); 729 730 filtsave = CSR_READ_4(sc, NGE_RXFILT_CTL); 731 732 /* first, zot all the existing hash bits */ 733 for (i = 0; i < NGE_MCAST_FILTER_LEN; i += 2) { 734 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_MCAST_LO + i); 735 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 0); 736 } 737 738 /* 739 * From the 11 bits returned by the crc routine, the top 7 740 * bits represent the 16-bit word in the mcast hash table 741 * that needs to be updated, and the lower 4 bits represent 742 * which bit within that byte needs to be set. 743 */ 744 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 745 if (ifma->ifma_addr->sa_family != AF_LINK) 746 continue; 747 h = nge_crc(sc, LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 748 index = (h >> 4) & 0x7F; 749 bit = h & 0xF; 750 CSR_WRITE_4(sc, NGE_RXFILT_CTL, 751 NGE_FILTADDR_MCAST_LO + (index * 2)); 752 NGE_SETBIT(sc, NGE_RXFILT_DATA, (1 << bit)); 753 } 754 755 CSR_WRITE_4(sc, NGE_RXFILT_CTL, filtsave); 756 757 return; 758} 759 760static void 761nge_reset(sc) 762 struct nge_softc *sc; 763{ 764 register int i; 765 766 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RESET); 767 768 for (i = 0; i < NGE_TIMEOUT; i++) { 769 if (!(CSR_READ_4(sc, NGE_CSR) & NGE_CSR_RESET)) 770 break; 771 } 772 773 if (i == NGE_TIMEOUT) 774 printf("nge%d: reset never completed\n", sc->nge_unit); 775 776 /* Wait a little while for the chip to get its brains in order. */ 777 DELAY(1000); 778 779 /* 780 * If this is a NetSemi chip, make sure to clear 781 * PME mode. 782 */ 783 CSR_WRITE_4(sc, NGE_CLKRUN, NGE_CLKRUN_PMESTS); 784 CSR_WRITE_4(sc, NGE_CLKRUN, 0); 785 786 return; 787} 788 789/* 790 * Probe for a NatSemi chip. Check the PCI vendor and device 791 * IDs against our list and return a device name if we find a match. 792 */ 793static int 794nge_probe(dev) 795 device_t dev; 796{ 797 struct nge_type *t; 798 799 t = nge_devs; 800 801 while(t->nge_name != NULL) { 802 if ((pci_get_vendor(dev) == t->nge_vid) && 803 (pci_get_device(dev) == t->nge_did)) { 804 device_set_desc(dev, t->nge_name); 805 return(0); 806 } 807 t++; 808 } 809 810 return(ENXIO); 811} 812 813/* 814 * Attach the interface. Allocate softc structures, do ifmedia 815 * setup and ethernet/BPF attach. 816 */ 817static int 818nge_attach(dev) 819 device_t dev; 820{ 821 int s; 822 u_char eaddr[ETHER_ADDR_LEN]; 823 u_int32_t command; 824 struct nge_softc *sc; 825 struct ifnet *ifp; 826 int unit, error = 0, rid; 827 const char *sep = ""; 828 829 s = splimp(); 830 831 sc = device_get_softc(dev); 832 unit = device_get_unit(dev); 833 bzero(sc, sizeof(struct nge_softc)); 834 835 mtx_init(&sc->nge_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 836 MTX_DEF | MTX_RECURSE); 837 838 /* 839 * Handle power management nonsense. 840 */ 841 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 842 u_int32_t iobase, membase, irq; 843 844 /* Save important PCI config data. */ 845 iobase = pci_read_config(dev, NGE_PCI_LOIO, 4); 846 membase = pci_read_config(dev, NGE_PCI_LOMEM, 4); 847 irq = pci_read_config(dev, NGE_PCI_INTLINE, 4); 848 849 /* Reset the power state. */ 850 printf("nge%d: chip is in D%d power mode " 851 "-- setting to D0\n", unit, 852 pci_get_powerstate(dev)); 853 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 854 855 /* Restore PCI config data. */ 856 pci_write_config(dev, NGE_PCI_LOIO, iobase, 4); 857 pci_write_config(dev, NGE_PCI_LOMEM, membase, 4); 858 pci_write_config(dev, NGE_PCI_INTLINE, irq, 4); 859 } 860 861 /* 862 * Map control/status registers. 863 */ 864 pci_enable_busmaster(dev); 865 pci_enable_io(dev, SYS_RES_IOPORT); 866 pci_enable_io(dev, SYS_RES_MEMORY); 867 command = pci_read_config(dev, PCIR_COMMAND, 4); 868 869#ifdef NGE_USEIOSPACE 870 if (!(command & PCIM_CMD_PORTEN)) { 871 printf("nge%d: failed to enable I/O ports!\n", unit); 872 error = ENXIO;; 873 goto fail; 874 } 875#else 876 if (!(command & PCIM_CMD_MEMEN)) { 877 printf("nge%d: failed to enable memory mapping!\n", unit); 878 error = ENXIO;; 879 goto fail; 880 } 881#endif 882 883 rid = NGE_RID; 884 sc->nge_res = bus_alloc_resource(dev, NGE_RES, &rid, 885 0, ~0, 1, RF_ACTIVE); 886 887 if (sc->nge_res == NULL) { 888 printf("nge%d: couldn't map ports/memory\n", unit); 889 error = ENXIO; 890 goto fail; 891 } 892 893 sc->nge_btag = rman_get_bustag(sc->nge_res); 894 sc->nge_bhandle = rman_get_bushandle(sc->nge_res); 895 896 /* Allocate interrupt */ 897 rid = 0; 898 sc->nge_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 899 RF_SHAREABLE | RF_ACTIVE); 900 901 if (sc->nge_irq == NULL) { 902 printf("nge%d: couldn't map interrupt\n", unit); 903 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 904 error = ENXIO; 905 goto fail; 906 } 907 908 error = bus_setup_intr(dev, sc->nge_irq, INTR_TYPE_NET, 909 nge_intr, sc, &sc->nge_intrhand); 910 911 if (error) { 912 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 913 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 914 printf("nge%d: couldn't set up irq\n", unit); 915 goto fail; 916 } 917 918 /* Reset the adapter. */ 919 nge_reset(sc); 920 921 /* 922 * Get station address from the EEPROM. 923 */ 924 nge_read_eeprom(sc, (caddr_t)&eaddr[4], NGE_EE_NODEADDR, 1, 0); 925 nge_read_eeprom(sc, (caddr_t)&eaddr[2], NGE_EE_NODEADDR + 1, 1, 0); 926 nge_read_eeprom(sc, (caddr_t)&eaddr[0], NGE_EE_NODEADDR + 2, 1, 0); 927 928 /* 929 * A NatSemi chip was detected. Inform the world. 930 */ 931 printf("nge%d: Ethernet address: %6D\n", unit, eaddr, ":"); 932 933 sc->nge_unit = unit; 934 bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 935 936 sc->nge_ldata = contigmalloc(sizeof(struct nge_list_data), M_DEVBUF, 937 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 938 939 if (sc->nge_ldata == NULL) { 940 printf("nge%d: no memory for list buffers!\n", unit); 941 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 942 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 943 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 944 error = ENXIO; 945 goto fail; 946 } 947 bzero(sc->nge_ldata, sizeof(struct nge_list_data)); 948 949 /* Try to allocate memory for jumbo buffers. */ 950 if (nge_alloc_jumbo_mem(sc)) { 951 printf("nge%d: jumbo buffer allocation failed\n", 952 sc->nge_unit); 953 contigfree(sc->nge_ldata, 954 sizeof(struct nge_list_data), M_DEVBUF); 955 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 956 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 957 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 958 error = ENXIO; 959 goto fail; 960 } 961 962 ifp = &sc->arpcom.ac_if; 963 ifp->if_softc = sc; 964 ifp->if_unit = unit; 965 ifp->if_name = "nge"; 966 ifp->if_mtu = ETHERMTU; 967 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 968 ifp->if_ioctl = nge_ioctl; 969 ifp->if_output = ether_output; 970 ifp->if_start = nge_start; 971 ifp->if_watchdog = nge_watchdog; 972 ifp->if_init = nge_init; 973 ifp->if_baudrate = 1000000000; 974 ifp->if_snd.ifq_maxlen = NGE_TX_LIST_CNT - 1; 975 ifp->if_hwassist = NGE_CSUM_FEATURES; 976 ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING; 977 ifp->if_capenable = ifp->if_capabilities; 978 979 /* 980 * Do MII setup. 981 */ 982 if (mii_phy_probe(dev, &sc->nge_miibus, 983 nge_ifmedia_upd, nge_ifmedia_sts)) { 984 if (CSR_READ_4(sc, NGE_CFG) & NGE_CFG_TBI_EN) { 985 sc->nge_tbi = 1; 986 device_printf(dev, "Using TBI\n"); 987 988 sc->nge_miibus = dev; 989 990 ifmedia_init(&sc->nge_ifmedia, 0, nge_ifmedia_upd, 991 nge_ifmedia_sts); 992#define ADD(m, c) ifmedia_add(&sc->nge_ifmedia, (m), (c), NULL) 993#define PRINT(s) printf("%s%s", sep, s); sep = ", " 994 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, 0), 0); 995 device_printf(dev, " "); 996 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 0), 0); 997 PRINT("1000baseSX"); 998 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 0),0); 999 PRINT("1000baseSX-FDX"); 1000 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 0); 1001 PRINT("auto"); 1002 1003 printf("\n"); 1004#undef ADD 1005#undef PRINT 1006 ifmedia_set(&sc->nge_ifmedia, 1007 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0)); 1008 1009 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1010 | NGE_GPIO_GP4_OUT 1011 | NGE_GPIO_GP1_OUTENB | NGE_GPIO_GP2_OUTENB 1012 | NGE_GPIO_GP3_OUTENB 1013 | NGE_GPIO_GP3_IN | NGE_GPIO_GP4_IN); 1014 1015 } else { 1016 printf("nge%d: MII without any PHY!\n", sc->nge_unit); 1017 nge_free_jumbo_mem(sc); 1018 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 1019 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 1020 bus_release_resource(dev, NGE_RES, NGE_RID, 1021 sc->nge_res); 1022 error = ENXIO; 1023 goto fail; 1024 } 1025 } 1026 1027 /* 1028 * Call MI attach routine. 1029 */ 1030 ether_ifattach(ifp, eaddr); 1031 callout_handle_init(&sc->nge_stat_ch); 1032 1033fail: 1034 1035 splx(s); 1036 mtx_destroy(&sc->nge_mtx); 1037 return(error); 1038} 1039 1040static int 1041nge_detach(dev) 1042 device_t dev; 1043{ 1044 struct nge_softc *sc; 1045 struct ifnet *ifp; 1046 int s; 1047 1048 s = splimp(); 1049 1050 sc = device_get_softc(dev); 1051 ifp = &sc->arpcom.ac_if; 1052 1053 nge_reset(sc); 1054 nge_stop(sc); 1055 ether_ifdetach(ifp); 1056 1057 bus_generic_detach(dev); 1058 if (!sc->nge_tbi) { 1059 device_delete_child(dev, sc->nge_miibus); 1060 } 1061 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 1062 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 1063 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 1064 1065 contigfree(sc->nge_ldata, sizeof(struct nge_list_data), M_DEVBUF); 1066 nge_free_jumbo_mem(sc); 1067 1068 splx(s); 1069 mtx_destroy(&sc->nge_mtx); 1070 1071 return(0); 1072} 1073 1074/* 1075 * Initialize the transmit descriptors. 1076 */ 1077static int 1078nge_list_tx_init(sc) 1079 struct nge_softc *sc; 1080{ 1081 struct nge_list_data *ld; 1082 struct nge_ring_data *cd; 1083 int i; 1084 1085 cd = &sc->nge_cdata; 1086 ld = sc->nge_ldata; 1087 1088 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 1089 if (i == (NGE_TX_LIST_CNT - 1)) { 1090 ld->nge_tx_list[i].nge_nextdesc = 1091 &ld->nge_tx_list[0]; 1092 ld->nge_tx_list[i].nge_next = 1093 vtophys(&ld->nge_tx_list[0]); 1094 } else { 1095 ld->nge_tx_list[i].nge_nextdesc = 1096 &ld->nge_tx_list[i + 1]; 1097 ld->nge_tx_list[i].nge_next = 1098 vtophys(&ld->nge_tx_list[i + 1]); 1099 } 1100 ld->nge_tx_list[i].nge_mbuf = NULL; 1101 ld->nge_tx_list[i].nge_ptr = 0; 1102 ld->nge_tx_list[i].nge_ctl = 0; 1103 } 1104 1105 cd->nge_tx_prod = cd->nge_tx_cons = cd->nge_tx_cnt = 0; 1106 1107 return(0); 1108} 1109 1110 1111/* 1112 * Initialize the RX descriptors and allocate mbufs for them. Note that 1113 * we arrange the descriptors in a closed ring, so that the last descriptor 1114 * points back to the first. 1115 */ 1116static int 1117nge_list_rx_init(sc) 1118 struct nge_softc *sc; 1119{ 1120 struct nge_list_data *ld; 1121 struct nge_ring_data *cd; 1122 int i; 1123 1124 ld = sc->nge_ldata; 1125 cd = &sc->nge_cdata; 1126 1127 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 1128 if (nge_newbuf(sc, &ld->nge_rx_list[i], NULL) == ENOBUFS) 1129 return(ENOBUFS); 1130 if (i == (NGE_RX_LIST_CNT - 1)) { 1131 ld->nge_rx_list[i].nge_nextdesc = 1132 &ld->nge_rx_list[0]; 1133 ld->nge_rx_list[i].nge_next = 1134 vtophys(&ld->nge_rx_list[0]); 1135 } else { 1136 ld->nge_rx_list[i].nge_nextdesc = 1137 &ld->nge_rx_list[i + 1]; 1138 ld->nge_rx_list[i].nge_next = 1139 vtophys(&ld->nge_rx_list[i + 1]); 1140 } 1141 } 1142 1143 cd->nge_rx_prod = 0; 1144 1145 return(0); 1146} 1147 1148/* 1149 * Initialize an RX descriptor and attach an MBUF cluster. 1150 */ 1151static int 1152nge_newbuf(sc, c, m) 1153 struct nge_softc *sc; 1154 struct nge_desc *c; 1155 struct mbuf *m; 1156{ 1157 struct mbuf *m_new = NULL; 1158 caddr_t *buf = NULL; 1159 1160 if (m == NULL) { 1161 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1162 if (m_new == NULL) { 1163 printf("nge%d: no memory for rx list " 1164 "-- packet dropped!\n", sc->nge_unit); 1165 return(ENOBUFS); 1166 } 1167 1168 /* Allocate the jumbo buffer */ 1169 buf = nge_jalloc(sc); 1170 if (buf == NULL) { 1171#ifdef NGE_VERBOSE 1172 printf("nge%d: jumbo allocation failed " 1173 "-- packet dropped!\n", sc->nge_unit); 1174#endif 1175 m_freem(m_new); 1176 return(ENOBUFS); 1177 } 1178 /* Attach the buffer to the mbuf */ 1179 m_new->m_data = (void *)buf; 1180 m_new->m_len = m_new->m_pkthdr.len = NGE_JUMBO_FRAMELEN; 1181 MEXTADD(m_new, buf, NGE_JUMBO_FRAMELEN, nge_jfree, 1182 (struct nge_softc *)sc, 0, EXT_NET_DRV); 1183 } else { 1184 m_new = m; 1185 m_new->m_len = m_new->m_pkthdr.len = NGE_JUMBO_FRAMELEN; 1186 m_new->m_data = m_new->m_ext.ext_buf; 1187 } 1188 1189 m_adj(m_new, sizeof(u_int64_t)); 1190 1191 c->nge_mbuf = m_new; 1192 c->nge_ptr = vtophys(mtod(m_new, caddr_t)); 1193 c->nge_ctl = m_new->m_len; 1194 c->nge_extsts = 0; 1195 1196 return(0); 1197} 1198 1199static int 1200nge_alloc_jumbo_mem(sc) 1201 struct nge_softc *sc; 1202{ 1203 caddr_t ptr; 1204 register int i; 1205 struct nge_jpool_entry *entry; 1206 1207 /* Grab a big chunk o' storage. */ 1208 sc->nge_cdata.nge_jumbo_buf = contigmalloc(NGE_JMEM, M_DEVBUF, 1209 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 1210 1211 if (sc->nge_cdata.nge_jumbo_buf == NULL) { 1212 printf("nge%d: no memory for jumbo buffers!\n", sc->nge_unit); 1213 return(ENOBUFS); 1214 } 1215 1216 SLIST_INIT(&sc->nge_jfree_listhead); 1217 SLIST_INIT(&sc->nge_jinuse_listhead); 1218 1219 /* 1220 * Now divide it up into 9K pieces and save the addresses 1221 * in an array. 1222 */ 1223 ptr = sc->nge_cdata.nge_jumbo_buf; 1224 for (i = 0; i < NGE_JSLOTS; i++) { 1225 sc->nge_cdata.nge_jslots[i] = ptr; 1226 ptr += NGE_JLEN; 1227 entry = malloc(sizeof(struct nge_jpool_entry), 1228 M_DEVBUF, M_NOWAIT); 1229 if (entry == NULL) { 1230 printf("nge%d: no memory for jumbo " 1231 "buffer queue!\n", sc->nge_unit); 1232 return(ENOBUFS); 1233 } 1234 entry->slot = i; 1235 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, 1236 entry, jpool_entries); 1237 } 1238 1239 return(0); 1240} 1241 1242static void 1243nge_free_jumbo_mem(sc) 1244 struct nge_softc *sc; 1245{ 1246 register int i; 1247 struct nge_jpool_entry *entry; 1248 1249 for (i = 0; i < NGE_JSLOTS; i++) { 1250 entry = SLIST_FIRST(&sc->nge_jfree_listhead); 1251 SLIST_REMOVE_HEAD(&sc->nge_jfree_listhead, jpool_entries); 1252 free(entry, M_DEVBUF); 1253 } 1254 1255 contigfree(sc->nge_cdata.nge_jumbo_buf, NGE_JMEM, M_DEVBUF); 1256 1257 return; 1258} 1259 1260/* 1261 * Allocate a jumbo buffer. 1262 */ 1263static void * 1264nge_jalloc(sc) 1265 struct nge_softc *sc; 1266{ 1267 struct nge_jpool_entry *entry; 1268 1269 entry = SLIST_FIRST(&sc->nge_jfree_listhead); 1270 1271 if (entry == NULL) { 1272#ifdef NGE_VERBOSE 1273 printf("nge%d: no free jumbo buffers\n", sc->nge_unit); 1274#endif 1275 return(NULL); 1276 } 1277 1278 SLIST_REMOVE_HEAD(&sc->nge_jfree_listhead, jpool_entries); 1279 SLIST_INSERT_HEAD(&sc->nge_jinuse_listhead, entry, jpool_entries); 1280 return(sc->nge_cdata.nge_jslots[entry->slot]); 1281} 1282 1283/* 1284 * Release a jumbo buffer. 1285 */ 1286static void 1287nge_jfree(buf, args) 1288 void *buf; 1289 void *args; 1290{ 1291 struct nge_softc *sc; 1292 int i; 1293 struct nge_jpool_entry *entry; 1294 1295 /* Extract the softc struct pointer. */ 1296 sc = args; 1297 1298 if (sc == NULL) 1299 panic("nge_jfree: can't find softc pointer!"); 1300 1301 /* calculate the slot this buffer belongs to */ 1302 i = ((vm_offset_t)buf 1303 - (vm_offset_t)sc->nge_cdata.nge_jumbo_buf) / NGE_JLEN; 1304 1305 if ((i < 0) || (i >= NGE_JSLOTS)) 1306 panic("nge_jfree: asked to free buffer that we don't manage!"); 1307 1308 entry = SLIST_FIRST(&sc->nge_jinuse_listhead); 1309 if (entry == NULL) 1310 panic("nge_jfree: buffer not in use!"); 1311 entry->slot = i; 1312 SLIST_REMOVE_HEAD(&sc->nge_jinuse_listhead, jpool_entries); 1313 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, entry, jpool_entries); 1314 1315 return; 1316} 1317/* 1318 * A frame has been uploaded: pass the resulting mbuf chain up to 1319 * the higher level protocols. 1320 */ 1321static void 1322nge_rxeof(sc) 1323 struct nge_softc *sc; 1324{ 1325 struct mbuf *m; 1326 struct ifnet *ifp; 1327 struct nge_desc *cur_rx; 1328 int i, total_len = 0; 1329 u_int32_t rxstat; 1330 1331 ifp = &sc->arpcom.ac_if; 1332 i = sc->nge_cdata.nge_rx_prod; 1333 1334 while(NGE_OWNDESC(&sc->nge_ldata->nge_rx_list[i])) { 1335 struct mbuf *m0 = NULL; 1336 u_int32_t extsts; 1337 1338#ifdef DEVICE_POLLING 1339 if (ifp->if_ipending & IFF_POLLING) { 1340 if (sc->rxcycles <= 0) 1341 break; 1342 sc->rxcycles--; 1343 } 1344#endif /* DEVICE_POLLING */ 1345 1346 cur_rx = &sc->nge_ldata->nge_rx_list[i]; 1347 rxstat = cur_rx->nge_rxstat; 1348 extsts = cur_rx->nge_extsts; 1349 m = cur_rx->nge_mbuf; 1350 cur_rx->nge_mbuf = NULL; 1351 total_len = NGE_RXBYTES(cur_rx); 1352 NGE_INC(i, NGE_RX_LIST_CNT); 1353 /* 1354 * If an error occurs, update stats, clear the 1355 * status word and leave the mbuf cluster in place: 1356 * it should simply get re-used next time this descriptor 1357 * comes up in the ring. 1358 */ 1359 if (!(rxstat & NGE_CMDSTS_PKT_OK)) { 1360 ifp->if_ierrors++; 1361 nge_newbuf(sc, cur_rx, m); 1362 continue; 1363 } 1364 1365 /* 1366 * Ok. NatSemi really screwed up here. This is the 1367 * only gigE chip I know of with alignment constraints 1368 * on receive buffers. RX buffers must be 64-bit aligned. 1369 */ 1370#ifdef __i386__ 1371 /* 1372 * By popular demand, ignore the alignment problems 1373 * on the Intel x86 platform. The performance hit 1374 * incurred due to unaligned accesses is much smaller 1375 * than the hit produced by forcing buffer copies all 1376 * the time, especially with jumbo frames. We still 1377 * need to fix up the alignment everywhere else though. 1378 */ 1379 if (nge_newbuf(sc, cur_rx, NULL) == ENOBUFS) { 1380#endif 1381 m0 = m_devget(mtod(m, char *), total_len, 1382 ETHER_ALIGN, ifp, NULL); 1383 nge_newbuf(sc, cur_rx, m); 1384 if (m0 == NULL) { 1385 printf("nge%d: no receive buffers " 1386 "available -- packet dropped!\n", 1387 sc->nge_unit); 1388 ifp->if_ierrors++; 1389 continue; 1390 } 1391 m = m0; 1392#ifdef __i386__ 1393 } else { 1394 m->m_pkthdr.rcvif = ifp; 1395 m->m_pkthdr.len = m->m_len = total_len; 1396 } 1397#endif 1398 1399 ifp->if_ipackets++; 1400 1401 /* Do IP checksum checking. */ 1402 if (extsts & NGE_RXEXTSTS_IPPKT) 1403 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1404 if (!(extsts & NGE_RXEXTSTS_IPCSUMERR)) 1405 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1406 if ((extsts & NGE_RXEXTSTS_TCPPKT && 1407 !(extsts & NGE_RXEXTSTS_TCPCSUMERR)) || 1408 (extsts & NGE_RXEXTSTS_UDPPKT && 1409 !(extsts & NGE_RXEXTSTS_UDPCSUMERR))) { 1410 m->m_pkthdr.csum_flags |= 1411 CSUM_DATA_VALID|CSUM_PSEUDO_HDR; 1412 m->m_pkthdr.csum_data = 0xffff; 1413 } 1414 1415 /* 1416 * If we received a packet with a vlan tag, pass it 1417 * to vlan_input() instead of ether_input(). 1418 */ 1419 if (extsts & NGE_RXEXTSTS_VLANPKT) { 1420 VLAN_INPUT_TAG(ifp, m, 1421 extsts & NGE_RXEXTSTS_VTCI, continue); 1422 } 1423 1424 (*ifp->if_input)(ifp, m); 1425 } 1426 1427 sc->nge_cdata.nge_rx_prod = i; 1428 1429 return; 1430} 1431 1432/* 1433 * A frame was downloaded to the chip. It's safe for us to clean up 1434 * the list buffers. 1435 */ 1436 1437static void 1438nge_txeof(sc) 1439 struct nge_softc *sc; 1440{ 1441 struct nge_desc *cur_tx = NULL; 1442 struct ifnet *ifp; 1443 u_int32_t idx; 1444 1445 ifp = &sc->arpcom.ac_if; 1446 1447 /* Clear the timeout timer. */ 1448 ifp->if_timer = 0; 1449 1450 /* 1451 * Go through our tx list and free mbufs for those 1452 * frames that have been transmitted. 1453 */ 1454 idx = sc->nge_cdata.nge_tx_cons; 1455 while (idx != sc->nge_cdata.nge_tx_prod) { 1456 cur_tx = &sc->nge_ldata->nge_tx_list[idx]; 1457 1458 if (NGE_OWNDESC(cur_tx)) 1459 break; 1460 1461 if (cur_tx->nge_ctl & NGE_CMDSTS_MORE) { 1462 sc->nge_cdata.nge_tx_cnt--; 1463 NGE_INC(idx, NGE_TX_LIST_CNT); 1464 continue; 1465 } 1466 1467 if (!(cur_tx->nge_ctl & NGE_CMDSTS_PKT_OK)) { 1468 ifp->if_oerrors++; 1469 if (cur_tx->nge_txstat & NGE_TXSTAT_EXCESSCOLLS) 1470 ifp->if_collisions++; 1471 if (cur_tx->nge_txstat & NGE_TXSTAT_OUTOFWINCOLL) 1472 ifp->if_collisions++; 1473 } 1474 1475 ifp->if_collisions += 1476 (cur_tx->nge_txstat & NGE_TXSTAT_COLLCNT) >> 16; 1477 1478 ifp->if_opackets++; 1479 if (cur_tx->nge_mbuf != NULL) { 1480 m_freem(cur_tx->nge_mbuf); 1481 cur_tx->nge_mbuf = NULL; 1482 } 1483 1484 sc->nge_cdata.nge_tx_cnt--; 1485 NGE_INC(idx, NGE_TX_LIST_CNT); 1486 ifp->if_timer = 0; 1487 } 1488 1489 sc->nge_cdata.nge_tx_cons = idx; 1490 1491 if (cur_tx != NULL) 1492 ifp->if_flags &= ~IFF_OACTIVE; 1493 1494 return; 1495} 1496 1497static void 1498nge_tick(xsc) 1499 void *xsc; 1500{ 1501 struct nge_softc *sc; 1502 struct mii_data *mii; 1503 struct ifnet *ifp; 1504 int s; 1505 1506 s = splimp(); 1507 1508 sc = xsc; 1509 ifp = &sc->arpcom.ac_if; 1510 1511 if (sc->nge_tbi) { 1512 if (!sc->nge_link) { 1513 if (CSR_READ_4(sc, NGE_TBI_BMSR) 1514 & NGE_TBIBMSR_ANEG_DONE) { 1515 printf("nge%d: gigabit link up\n", 1516 sc->nge_unit); 1517 nge_miibus_statchg(sc->nge_miibus); 1518 sc->nge_link++; 1519 if (ifp->if_snd.ifq_head != NULL) 1520 nge_start(ifp); 1521 } 1522 } 1523 } else { 1524 mii = device_get_softc(sc->nge_miibus); 1525 mii_tick(mii); 1526 1527 if (!sc->nge_link) { 1528 if (mii->mii_media_status & IFM_ACTIVE && 1529 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 1530 sc->nge_link++; 1531 if (IFM_SUBTYPE(mii->mii_media_active) 1532 == IFM_1000_T) 1533 printf("nge%d: gigabit link up\n", 1534 sc->nge_unit); 1535 if (ifp->if_snd.ifq_head != NULL) 1536 nge_start(ifp); 1537 } 1538 } 1539 } 1540 sc->nge_stat_ch = timeout(nge_tick, sc, hz); 1541 1542 splx(s); 1543 1544 return; 1545} 1546 1547#ifdef DEVICE_POLLING 1548static poll_handler_t nge_poll; 1549 1550static void 1551nge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1552{ 1553 struct nge_softc *sc = ifp->if_softc; 1554 1555 if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ 1556 CSR_WRITE_4(sc, NGE_IER, 1); 1557 return; 1558 } 1559 1560 /* 1561 * On the nge, reading the status register also clears it. 1562 * So before returning to intr mode we must make sure that all 1563 * possible pending sources of interrupts have been served. 1564 * In practice this means run to completion the *eof routines, 1565 * and then call the interrupt routine 1566 */ 1567 sc->rxcycles = count; 1568 nge_rxeof(sc); 1569 nge_txeof(sc); 1570 if (ifp->if_snd.ifq_head != NULL) 1571 nge_start(ifp); 1572 1573 if (sc->rxcycles > 0 || cmd == POLL_AND_CHECK_STATUS) { 1574 u_int32_t status; 1575 1576 /* Reading the ISR register clears all interrupts. */ 1577 status = CSR_READ_4(sc, NGE_ISR); 1578 1579 if (status & (NGE_ISR_RX_ERR|NGE_ISR_RX_OFLOW)) 1580 nge_rxeof(sc); 1581 1582 if (status & (NGE_ISR_RX_IDLE)) 1583 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1584 1585 if (status & NGE_ISR_SYSERR) { 1586 nge_reset(sc); 1587 nge_init(sc); 1588 } 1589 } 1590} 1591#endif /* DEVICE_POLLING */ 1592 1593static void 1594nge_intr(arg) 1595 void *arg; 1596{ 1597 struct nge_softc *sc; 1598 struct ifnet *ifp; 1599 u_int32_t status; 1600 1601 sc = arg; 1602 ifp = &sc->arpcom.ac_if; 1603 1604#ifdef DEVICE_POLLING 1605 if (ifp->if_ipending & IFF_POLLING) 1606 return; 1607 if (ether_poll_register(nge_poll, ifp)) { /* ok, disable interrupts */ 1608 CSR_WRITE_4(sc, NGE_IER, 0); 1609 nge_poll(ifp, 0, 1); 1610 return; 1611 } 1612#endif /* DEVICE_POLLING */ 1613 1614 /* Supress unwanted interrupts */ 1615 if (!(ifp->if_flags & IFF_UP)) { 1616 nge_stop(sc); 1617 return; 1618 } 1619 1620 /* Disable interrupts. */ 1621 CSR_WRITE_4(sc, NGE_IER, 0); 1622 1623 /* Data LED on for TBI mode */ 1624 if(sc->nge_tbi) 1625 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1626 | NGE_GPIO_GP3_OUT); 1627 1628 for (;;) { 1629 /* Reading the ISR register clears all interrupts. */ 1630 status = CSR_READ_4(sc, NGE_ISR); 1631 1632 if ((status & NGE_INTRS) == 0) 1633 break; 1634 1635 if ((status & NGE_ISR_TX_DESC_OK) || 1636 (status & NGE_ISR_TX_ERR) || 1637 (status & NGE_ISR_TX_OK) || 1638 (status & NGE_ISR_TX_IDLE)) 1639 nge_txeof(sc); 1640 1641 if ((status & NGE_ISR_RX_DESC_OK) || 1642 (status & NGE_ISR_RX_ERR) || 1643 (status & NGE_ISR_RX_OFLOW) || 1644 (status & NGE_ISR_RX_FIFO_OFLOW) || 1645 (status & NGE_ISR_RX_IDLE) || 1646 (status & NGE_ISR_RX_OK)) 1647 nge_rxeof(sc); 1648 1649 if ((status & NGE_ISR_RX_IDLE)) 1650 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1651 1652 if (status & NGE_ISR_SYSERR) { 1653 nge_reset(sc); 1654 ifp->if_flags &= ~IFF_RUNNING; 1655 nge_init(sc); 1656 } 1657 1658#if 0 1659 /* 1660 * XXX: nge_tick() is not ready to be called this way 1661 * it screws up the aneg timeout because mii_tick() is 1662 * only to be called once per second. 1663 */ 1664 if (status & NGE_IMR_PHY_INTR) { 1665 sc->nge_link = 0; 1666 nge_tick(sc); 1667 } 1668#endif 1669 } 1670 1671 /* Re-enable interrupts. */ 1672 CSR_WRITE_4(sc, NGE_IER, 1); 1673 1674 if (ifp->if_snd.ifq_head != NULL) 1675 nge_start(ifp); 1676 1677 /* Data LED off for TBI mode */ 1678 1679 if(sc->nge_tbi) 1680 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1681 & ~NGE_GPIO_GP3_OUT); 1682 1683 return; 1684} 1685 1686/* 1687 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1688 * pointers to the fragment pointers. 1689 */ 1690static int 1691nge_encap(sc, m_head, txidx) 1692 struct nge_softc *sc; 1693 struct mbuf *m_head; 1694 u_int32_t *txidx; 1695{ 1696 struct nge_desc *f = NULL; 1697 struct mbuf *m; 1698 int frag, cur, cnt = 0; 1699 struct m_tag *mtag; 1700 1701 /* 1702 * Start packing the mbufs in this chain into 1703 * the fragment pointers. Stop when we run out 1704 * of fragments or hit the end of the mbuf chain. 1705 */ 1706 m = m_head; 1707 cur = frag = *txidx; 1708 1709 for (m = m_head; m != NULL; m = m->m_next) { 1710 if (m->m_len != 0) { 1711 if ((NGE_TX_LIST_CNT - 1712 (sc->nge_cdata.nge_tx_cnt + cnt)) < 2) 1713 return(ENOBUFS); 1714 f = &sc->nge_ldata->nge_tx_list[frag]; 1715 f->nge_ctl = NGE_CMDSTS_MORE | m->m_len; 1716 f->nge_ptr = vtophys(mtod(m, vm_offset_t)); 1717 if (cnt != 0) 1718 f->nge_ctl |= NGE_CMDSTS_OWN; 1719 cur = frag; 1720 NGE_INC(frag, NGE_TX_LIST_CNT); 1721 cnt++; 1722 } 1723 } 1724 1725 if (m != NULL) 1726 return(ENOBUFS); 1727 1728 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts = 0; 1729 if (m_head->m_pkthdr.csum_flags) { 1730 if (m_head->m_pkthdr.csum_flags & CSUM_IP) 1731 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1732 NGE_TXEXTSTS_IPCSUM; 1733 if (m_head->m_pkthdr.csum_flags & CSUM_TCP) 1734 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1735 NGE_TXEXTSTS_TCPCSUM; 1736 if (m_head->m_pkthdr.csum_flags & CSUM_UDP) 1737 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1738 NGE_TXEXTSTS_UDPCSUM; 1739 } 1740 1741 mtag = VLAN_OUTPUT_TAG(&sc->arpcom.ac_if, m); 1742 if (mtag != NULL) { 1743 sc->nge_ldata->nge_tx_list[cur].nge_extsts |= 1744 (NGE_TXEXTSTS_VLANPKT|VLAN_TAG_VALUE(mtag)); 1745 } 1746 1747 sc->nge_ldata->nge_tx_list[cur].nge_mbuf = m_head; 1748 sc->nge_ldata->nge_tx_list[cur].nge_ctl &= ~NGE_CMDSTS_MORE; 1749 sc->nge_ldata->nge_tx_list[*txidx].nge_ctl |= NGE_CMDSTS_OWN; 1750 sc->nge_cdata.nge_tx_cnt += cnt; 1751 *txidx = frag; 1752 1753 return(0); 1754} 1755 1756/* 1757 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1758 * to the mbuf data regions directly in the transmit lists. We also save a 1759 * copy of the pointers since the transmit list fragment pointers are 1760 * physical addresses. 1761 */ 1762 1763static void 1764nge_start(ifp) 1765 struct ifnet *ifp; 1766{ 1767 struct nge_softc *sc; 1768 struct mbuf *m_head = NULL; 1769 u_int32_t idx; 1770 1771 sc = ifp->if_softc; 1772 1773 if (!sc->nge_link) 1774 return; 1775 1776 idx = sc->nge_cdata.nge_tx_prod; 1777 1778 if (ifp->if_flags & IFF_OACTIVE) 1779 return; 1780 1781 while(sc->nge_ldata->nge_tx_list[idx].nge_mbuf == NULL) { 1782 IF_DEQUEUE(&ifp->if_snd, m_head); 1783 if (m_head == NULL) 1784 break; 1785 1786 if (nge_encap(sc, m_head, &idx)) { 1787 IF_PREPEND(&ifp->if_snd, m_head); 1788 ifp->if_flags |= IFF_OACTIVE; 1789 break; 1790 } 1791 1792 /* 1793 * If there's a BPF listener, bounce a copy of this frame 1794 * to him. 1795 */ 1796 BPF_MTAP(ifp, m_head); 1797 1798 } 1799 1800 /* Transmit */ 1801 sc->nge_cdata.nge_tx_prod = idx; 1802 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_ENABLE); 1803 1804 /* 1805 * Set a timeout in case the chip goes out to lunch. 1806 */ 1807 ifp->if_timer = 5; 1808 1809 return; 1810} 1811 1812static void 1813nge_init(xsc) 1814 void *xsc; 1815{ 1816 struct nge_softc *sc = xsc; 1817 struct ifnet *ifp = &sc->arpcom.ac_if; 1818 struct mii_data *mii; 1819 int s; 1820 1821 if (ifp->if_flags & IFF_RUNNING) 1822 return; 1823 1824 s = splimp(); 1825 1826 /* 1827 * Cancel pending I/O and free all RX/TX buffers. 1828 */ 1829 nge_stop(sc); 1830 1831 if (sc->nge_tbi) { 1832 mii = NULL; 1833 } else { 1834 mii = device_get_softc(sc->nge_miibus); 1835 } 1836 1837 /* Set MAC address */ 1838 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR0); 1839 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1840 ((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 1841 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR1); 1842 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1843 ((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 1844 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR2); 1845 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1846 ((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 1847 1848 /* Init circular RX list. */ 1849 if (nge_list_rx_init(sc) == ENOBUFS) { 1850 printf("nge%d: initialization failed: no " 1851 "memory for rx buffers\n", sc->nge_unit); 1852 nge_stop(sc); 1853 (void)splx(s); 1854 return; 1855 } 1856 1857 /* 1858 * Init tx descriptors. 1859 */ 1860 nge_list_tx_init(sc); 1861 1862 /* 1863 * For the NatSemi chip, we have to explicitly enable the 1864 * reception of ARP frames, as well as turn on the 'perfect 1865 * match' filter where we store the station address, otherwise 1866 * we won't receive unicasts meant for this host. 1867 */ 1868 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ARP); 1869 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_PERFECT); 1870 1871 /* If we want promiscuous mode, set the allframes bit. */ 1872 if (ifp->if_flags & IFF_PROMISC) { 1873 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1874 } else { 1875 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1876 } 1877 1878 /* 1879 * Set the capture broadcast bit to capture broadcast frames. 1880 */ 1881 if (ifp->if_flags & IFF_BROADCAST) { 1882 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1883 } else { 1884 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1885 } 1886 1887 /* 1888 * Load the multicast filter. 1889 */ 1890 nge_setmulti(sc); 1891 1892 /* Turn the receive filter on */ 1893 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ENABLE); 1894 1895 /* 1896 * Load the address of the RX and TX lists. 1897 */ 1898 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 1899 vtophys(&sc->nge_ldata->nge_rx_list[0])); 1900 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 1901 vtophys(&sc->nge_ldata->nge_tx_list[0])); 1902 1903 /* Set RX configuration */ 1904 CSR_WRITE_4(sc, NGE_RX_CFG, NGE_RXCFG); 1905 /* 1906 * Enable hardware checksum validation for all IPv4 1907 * packets, do not reject packets with bad checksums. 1908 */ 1909 CSR_WRITE_4(sc, NGE_VLAN_IP_RXCTL, NGE_VIPRXCTL_IPCSUM_ENB); 1910 1911 /* 1912 * Tell the chip to detect and strip VLAN tag info from 1913 * received frames. The tag will be provided in the extsts 1914 * field in the RX descriptors. 1915 */ 1916 NGE_SETBIT(sc, NGE_VLAN_IP_RXCTL, 1917 NGE_VIPRXCTL_TAG_DETECT_ENB|NGE_VIPRXCTL_TAG_STRIP_ENB); 1918 1919 /* Set TX configuration */ 1920 CSR_WRITE_4(sc, NGE_TX_CFG, NGE_TXCFG); 1921 1922 /* 1923 * Enable TX IPv4 checksumming on a per-packet basis. 1924 */ 1925 CSR_WRITE_4(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_CSUM_PER_PKT); 1926 1927 /* 1928 * Tell the chip to insert VLAN tags on a per-packet basis as 1929 * dictated by the code in the frame encapsulation routine. 1930 */ 1931 NGE_SETBIT(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_TAG_PER_PKT); 1932 1933 /* Set full/half duplex mode. */ 1934 if (sc->nge_tbi) { 1935 if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 1936 == IFM_FDX) { 1937 NGE_SETBIT(sc, NGE_TX_CFG, 1938 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1939 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1940 } else { 1941 NGE_CLRBIT(sc, NGE_TX_CFG, 1942 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1943 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1944 } 1945 } else { 1946 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 1947 NGE_SETBIT(sc, NGE_TX_CFG, 1948 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1949 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1950 } else { 1951 NGE_CLRBIT(sc, NGE_TX_CFG, 1952 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1953 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1954 } 1955 } 1956 1957 nge_tick(sc); 1958 1959 /* 1960 * Enable the delivery of PHY interrupts based on 1961 * link/speed/duplex status changes. Also enable the 1962 * extsts field in the DMA descriptors (needed for 1963 * TCP/IP checksum offload on transmit). 1964 */ 1965 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_PHYINTR_SPD| 1966 NGE_CFG_PHYINTR_LNK|NGE_CFG_PHYINTR_DUP|NGE_CFG_EXTSTS_ENB); 1967 1968 /* 1969 * Configure interrupt holdoff (moderation). We can 1970 * have the chip delay interrupt delivery for a certain 1971 * period. Units are in 100us, and the max setting 1972 * is 25500us (0xFF x 100us). Default is a 100us holdoff. 1973 */ 1974 CSR_WRITE_4(sc, NGE_IHR, 0x01); 1975 1976 /* 1977 * Enable interrupts. 1978 */ 1979 CSR_WRITE_4(sc, NGE_IMR, NGE_INTRS); 1980#ifdef DEVICE_POLLING 1981 /* 1982 * ... only enable interrupts if we are not polling, make sure 1983 * they are off otherwise. 1984 */ 1985 if (ifp->if_ipending & IFF_POLLING) 1986 CSR_WRITE_4(sc, NGE_IER, 0); 1987 else 1988#endif /* DEVICE_POLLING */ 1989 CSR_WRITE_4(sc, NGE_IER, 1); 1990 1991 /* Enable receiver and transmitter. */ 1992 NGE_CLRBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE); 1993 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1994 1995 nge_ifmedia_upd(ifp); 1996 1997 ifp->if_flags |= IFF_RUNNING; 1998 ifp->if_flags &= ~IFF_OACTIVE; 1999 2000 (void)splx(s); 2001 2002 return; 2003} 2004 2005/* 2006 * Set media options. 2007 */ 2008static int 2009nge_ifmedia_upd(ifp) 2010 struct ifnet *ifp; 2011{ 2012 struct nge_softc *sc; 2013 struct mii_data *mii; 2014 2015 sc = ifp->if_softc; 2016 2017 if (sc->nge_tbi) { 2018 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 2019 == IFM_AUTO) { 2020 CSR_WRITE_4(sc, NGE_TBI_ANAR, 2021 CSR_READ_4(sc, NGE_TBI_ANAR) 2022 | NGE_TBIANAR_HDX | NGE_TBIANAR_FDX 2023 | NGE_TBIANAR_PS1 | NGE_TBIANAR_PS2); 2024 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG 2025 | NGE_TBIBMCR_RESTART_ANEG); 2026 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG); 2027 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media 2028 & IFM_GMASK) == IFM_FDX) { 2029 NGE_SETBIT(sc, NGE_TX_CFG, 2030 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 2031 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 2032 2033 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 2034 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 2035 } else { 2036 NGE_CLRBIT(sc, NGE_TX_CFG, 2037 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 2038 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 2039 2040 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 2041 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 2042 } 2043 2044 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 2045 & ~NGE_GPIO_GP3_OUT); 2046 } else { 2047 mii = device_get_softc(sc->nge_miibus); 2048 sc->nge_link = 0; 2049 if (mii->mii_instance) { 2050 struct mii_softc *miisc; 2051 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL; 2052 miisc = LIST_NEXT(miisc, mii_list)) 2053 mii_phy_reset(miisc); 2054 } 2055 mii_mediachg(mii); 2056 } 2057 2058 return(0); 2059} 2060 2061/* 2062 * Report current media status. 2063 */ 2064static void 2065nge_ifmedia_sts(ifp, ifmr) 2066 struct ifnet *ifp; 2067 struct ifmediareq *ifmr; 2068{ 2069 struct nge_softc *sc; 2070 struct mii_data *mii; 2071 2072 sc = ifp->if_softc; 2073 2074 if (sc->nge_tbi) { 2075 ifmr->ifm_status = IFM_AVALID; 2076 ifmr->ifm_active = IFM_ETHER; 2077 2078 if (CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE) { 2079 ifmr->ifm_status |= IFM_ACTIVE; 2080 } 2081 if (CSR_READ_4(sc, NGE_TBI_BMCR) & NGE_TBIBMCR_LOOPBACK) 2082 ifmr->ifm_active |= IFM_LOOP; 2083 if (!CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE) { 2084 ifmr->ifm_active |= IFM_NONE; 2085 ifmr->ifm_status = 0; 2086 return; 2087 } 2088 ifmr->ifm_active |= IFM_1000_SX; 2089 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 2090 == IFM_AUTO) { 2091 ifmr->ifm_active |= IFM_AUTO; 2092 if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 2093 & NGE_TBIANAR_FDX) { 2094 ifmr->ifm_active |= IFM_FDX; 2095 }else if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 2096 & NGE_TBIANAR_HDX) { 2097 ifmr->ifm_active |= IFM_HDX; 2098 } 2099 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 2100 == IFM_FDX) 2101 ifmr->ifm_active |= IFM_FDX; 2102 else 2103 ifmr->ifm_active |= IFM_HDX; 2104 2105 } else { 2106 mii = device_get_softc(sc->nge_miibus); 2107 mii_pollstat(mii); 2108 ifmr->ifm_active = mii->mii_media_active; 2109 ifmr->ifm_status = mii->mii_media_status; 2110 } 2111 2112 return; 2113} 2114 2115static int 2116nge_ioctl(ifp, command, data) 2117 struct ifnet *ifp; 2118 u_long command; 2119 caddr_t data; 2120{ 2121 struct nge_softc *sc = ifp->if_softc; 2122 struct ifreq *ifr = (struct ifreq *) data; 2123 struct mii_data *mii; 2124 int s, error = 0; 2125 2126 s = splimp(); 2127 2128 switch(command) { 2129 case SIOCSIFMTU: 2130 if (ifr->ifr_mtu > NGE_JUMBO_MTU) 2131 error = EINVAL; 2132 else { 2133 ifp->if_mtu = ifr->ifr_mtu; 2134 /* 2135 * Workaround: if the MTU is larger than 2136 * 8152 (TX FIFO size minus 64 minus 18), turn off 2137 * TX checksum offloading. 2138 */ 2139 if (ifr->ifr_mtu >= 8152) 2140 ifp->if_hwassist = 0; 2141 else 2142 ifp->if_hwassist = NGE_CSUM_FEATURES; 2143 } 2144 break; 2145 case SIOCSIFFLAGS: 2146 if (ifp->if_flags & IFF_UP) { 2147 if (ifp->if_flags & IFF_RUNNING && 2148 ifp->if_flags & IFF_PROMISC && 2149 !(sc->nge_if_flags & IFF_PROMISC)) { 2150 NGE_SETBIT(sc, NGE_RXFILT_CTL, 2151 NGE_RXFILTCTL_ALLPHYS| 2152 NGE_RXFILTCTL_ALLMULTI); 2153 } else if (ifp->if_flags & IFF_RUNNING && 2154 !(ifp->if_flags & IFF_PROMISC) && 2155 sc->nge_if_flags & IFF_PROMISC) { 2156 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2157 NGE_RXFILTCTL_ALLPHYS); 2158 if (!(ifp->if_flags & IFF_ALLMULTI)) 2159 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2160 NGE_RXFILTCTL_ALLMULTI); 2161 } else { 2162 ifp->if_flags &= ~IFF_RUNNING; 2163 nge_init(sc); 2164 } 2165 } else { 2166 if (ifp->if_flags & IFF_RUNNING) 2167 nge_stop(sc); 2168 } 2169 sc->nge_if_flags = ifp->if_flags; 2170 error = 0; 2171 break; 2172 case SIOCADDMULTI: 2173 case SIOCDELMULTI: 2174 nge_setmulti(sc); 2175 error = 0; 2176 break; 2177 case SIOCGIFMEDIA: 2178 case SIOCSIFMEDIA: 2179 if (sc->nge_tbi) { 2180 error = ifmedia_ioctl(ifp, ifr, &sc->nge_ifmedia, 2181 command); 2182 } else { 2183 mii = device_get_softc(sc->nge_miibus); 2184 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, 2185 command); 2186 } 2187 break; 2188 default: 2189 error = ether_ioctl(ifp, command, data); 2190 break; 2191 } 2192 2193 (void)splx(s); 2194 2195 return(error); 2196} 2197 2198static void 2199nge_watchdog(ifp) 2200 struct ifnet *ifp; 2201{ 2202 struct nge_softc *sc; 2203 2204 sc = ifp->if_softc; 2205 2206 ifp->if_oerrors++; 2207 printf("nge%d: watchdog timeout\n", sc->nge_unit); 2208 2209 nge_stop(sc); 2210 nge_reset(sc); 2211 ifp->if_flags &= ~IFF_RUNNING; 2212 nge_init(sc); 2213 2214 if (ifp->if_snd.ifq_head != NULL) 2215 nge_start(ifp); 2216 2217 return; 2218} 2219 2220/* 2221 * Stop the adapter and free any mbufs allocated to the 2222 * RX and TX lists. 2223 */ 2224static void 2225nge_stop(sc) 2226 struct nge_softc *sc; 2227{ 2228 register int i; 2229 struct ifnet *ifp; 2230 struct mii_data *mii; 2231 2232 ifp = &sc->arpcom.ac_if; 2233 ifp->if_timer = 0; 2234 if (sc->nge_tbi) { 2235 mii = NULL; 2236 } else { 2237 mii = device_get_softc(sc->nge_miibus); 2238 } 2239 2240 untimeout(nge_tick, sc, sc->nge_stat_ch); 2241#ifdef DEVICE_POLLING 2242 ether_poll_deregister(ifp); 2243#endif 2244 CSR_WRITE_4(sc, NGE_IER, 0); 2245 CSR_WRITE_4(sc, NGE_IMR, 0); 2246 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE); 2247 DELAY(1000); 2248 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 0); 2249 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 0); 2250 2251 if (!sc->nge_tbi) 2252 mii_down(mii); 2253 2254 sc->nge_link = 0; 2255 2256 /* 2257 * Free data in the RX lists. 2258 */ 2259 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 2260 if (sc->nge_ldata->nge_rx_list[i].nge_mbuf != NULL) { 2261 m_freem(sc->nge_ldata->nge_rx_list[i].nge_mbuf); 2262 sc->nge_ldata->nge_rx_list[i].nge_mbuf = NULL; 2263 } 2264 } 2265 bzero((char *)&sc->nge_ldata->nge_rx_list, 2266 sizeof(sc->nge_ldata->nge_rx_list)); 2267 2268 /* 2269 * Free the TX list buffers. 2270 */ 2271 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 2272 if (sc->nge_ldata->nge_tx_list[i].nge_mbuf != NULL) { 2273 m_freem(sc->nge_ldata->nge_tx_list[i].nge_mbuf); 2274 sc->nge_ldata->nge_tx_list[i].nge_mbuf = NULL; 2275 } 2276 } 2277 2278 bzero((char *)&sc->nge_ldata->nge_tx_list, 2279 sizeof(sc->nge_ldata->nge_tx_list)); 2280 2281 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2282 2283 return; 2284} 2285 2286/* 2287 * Stop all chip I/O so that the kernel's probe routines don't 2288 * get confused by errant DMAs when rebooting. 2289 */ 2290static void 2291nge_shutdown(dev) 2292 device_t dev; 2293{ 2294 struct nge_softc *sc; 2295 2296 sc = device_get_softc(dev); 2297 2298 nge_reset(sc); 2299 nge_stop(sc); 2300 2301 return; 2302} 2303