if_lge.c revision 104094
1/* 2 * Copyright (c) 2001 Wind River Systems 3 * Copyright (c) 1997, 1998, 1999, 2000, 2001 4 * Bill Paul <william.paul@windriver.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 * $FreeBSD: head/sys/dev/lge/if_lge.c 104094 2002-09-28 17:15:38Z phk $ 34 */ 35 36/* 37 * Level 1 LXT1001 gigabit ethernet driver for FreeBSD. Public 38 * documentation not available, but ask me nicely. 39 * 40 * Written by Bill Paul <william.paul@windriver.com> 41 * Wind River Systems 42 */ 43 44/* 45 * The Level 1 chip is used on some D-Link, SMC and Addtron NICs. 46 * It's a 64-bit PCI part that supports TCP/IP checksum offload, 47 * VLAN tagging/insertion, GMII and TBI (1000baseX) ports. There 48 * are three supported methods for data transfer between host and 49 * NIC: programmed I/O, traditional scatter/gather DMA and Packet 50 * Propulsion Technology (tm) DMA. The latter mechanism is a form 51 * of double buffer DMA where the packet data is copied to a 52 * pre-allocated DMA buffer who's physical address has been loaded 53 * into a table at device initialization time. The rationale is that 54 * the virtual to physical address translation needed for normal 55 * scatter/gather DMA is more expensive than the data copy needed 56 * for double buffering. This may be true in Windows NT and the like, 57 * but it isn't true for us, at least on the x86 arch. This driver 58 * uses the scatter/gather I/O method for both TX and RX. 59 * 60 * The LXT1001 only supports TCP/IP checksum offload on receive. 61 * Also, the VLAN tagging is done using a 16-entry table which allows 62 * the chip to perform hardware filtering based on VLAN tags. Sadly, 63 * our vlan support doesn't currently play well with this kind of 64 * hardware support. 65 * 66 * Special thanks to: 67 * - Jeff James at Intel, for arranging to have the LXT1001 manual 68 * released (at long last) 69 * - Beny Chen at D-Link, for actually sending it to me 70 * - Brad Short and Keith Alexis at SMC, for sending me sample 71 * SMC9462SX and SMC9462TX adapters for testing 72 * - Paul Saab at Y!, for not killing me (though it remains to be seen 73 * if in fact he did me much of a favor) 74 */ 75 76#include <sys/param.h> 77#include <sys/systm.h> 78#include <sys/sockio.h> 79#include <sys/mbuf.h> 80#include <sys/malloc.h> 81#include <sys/kernel.h> 82#include <sys/socket.h> 83 84#include <net/if.h> 85#include <net/if_arp.h> 86#include <net/ethernet.h> 87#include <net/if_dl.h> 88#include <net/if_media.h> 89 90#include <net/bpf.h> 91 92#include <vm/vm.h> /* for vtophys */ 93#include <vm/pmap.h> /* for vtophys */ 94#include <machine/clock.h> /* for DELAY */ 95#include <machine/bus_pio.h> 96#include <machine/bus_memio.h> 97#include <machine/bus.h> 98#include <machine/resource.h> 99#include <sys/bus.h> 100#include <sys/rman.h> 101 102#include <dev/mii/mii.h> 103#include <dev/mii/miivar.h> 104 105#include <pci/pcireg.h> 106#include <pci/pcivar.h> 107 108#define LGE_USEIOSPACE 109 110#include <dev/lge/if_lgereg.h> 111 112/* "controller miibus0" required. See GENERIC if you get errors here. */ 113#include "miibus_if.h" 114 115#ifndef lint 116static const char rcsid[] = 117 "$FreeBSD: head/sys/dev/lge/if_lge.c 104094 2002-09-28 17:15:38Z phk $"; 118#endif 119 120/* 121 * Various supported device vendors/types and their names. 122 */ 123static struct lge_type lge_devs[] = { 124 { LGE_VENDORID, LGE_DEVICEID, "Level 1 Gigabit Ethernet" }, 125 { 0, 0, NULL } 126}; 127 128static int lge_probe(device_t); 129static int lge_attach(device_t); 130static int lge_detach(device_t); 131 132static int lge_alloc_jumbo_mem(struct lge_softc *); 133static void lge_free_jumbo_mem(struct lge_softc *); 134static void *lge_jalloc(struct lge_softc *); 135static void lge_jfree(void *, void *); 136 137static int lge_newbuf(struct lge_softc *, struct lge_rx_desc *, struct mbuf *); 138static int lge_encap(struct lge_softc *, struct mbuf *, u_int32_t *); 139static void lge_rxeof(struct lge_softc *, int); 140static void lge_rxeoc(struct lge_softc *); 141static void lge_txeof(struct lge_softc *); 142static void lge_intr(void *); 143static void lge_tick(void *); 144static void lge_start(struct ifnet *); 145static int lge_ioctl(struct ifnet *, u_long, caddr_t); 146static void lge_init(void *); 147static void lge_stop(struct lge_softc *); 148static void lge_watchdog(struct ifnet *); 149static void lge_shutdown(device_t); 150static int lge_ifmedia_upd(struct ifnet *); 151static void lge_ifmedia_sts(struct ifnet *, struct ifmediareq *); 152 153static void lge_eeprom_getword(struct lge_softc *, int, u_int16_t *); 154static void lge_read_eeprom(struct lge_softc *, caddr_t, int, int, int); 155 156static int lge_miibus_readreg(device_t, int, int); 157static int lge_miibus_writereg(device_t, int, int, int); 158static void lge_miibus_statchg(device_t); 159 160static void lge_setmulti(struct lge_softc *); 161static u_int32_t lge_crc(struct lge_softc *, caddr_t); 162static void lge_reset(struct lge_softc *); 163static int lge_list_rx_init(struct lge_softc *); 164static int lge_list_tx_init(struct lge_softc *); 165 166#ifdef LGE_USEIOSPACE 167#define LGE_RES SYS_RES_IOPORT 168#define LGE_RID LGE_PCI_LOIO 169#else 170#define LGE_RES SYS_RES_MEMORY 171#define LGE_RID LGE_PCI_LOMEM 172#endif 173 174static device_method_t lge_methods[] = { 175 /* Device interface */ 176 DEVMETHOD(device_probe, lge_probe), 177 DEVMETHOD(device_attach, lge_attach), 178 DEVMETHOD(device_detach, lge_detach), 179 DEVMETHOD(device_shutdown, lge_shutdown), 180 181 /* bus interface */ 182 DEVMETHOD(bus_print_child, bus_generic_print_child), 183 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 184 185 /* MII interface */ 186 DEVMETHOD(miibus_readreg, lge_miibus_readreg), 187 DEVMETHOD(miibus_writereg, lge_miibus_writereg), 188 DEVMETHOD(miibus_statchg, lge_miibus_statchg), 189 190 { 0, 0 } 191}; 192 193static driver_t lge_driver = { 194 "lge", 195 lge_methods, 196 sizeof(struct lge_softc) 197}; 198 199static devclass_t lge_devclass; 200 201DRIVER_MODULE(if_lge, pci, lge_driver, lge_devclass, 0, 0); 202DRIVER_MODULE(miibus, lge, miibus_driver, miibus_devclass, 0, 0); 203 204#define LGE_SETBIT(sc, reg, x) \ 205 CSR_WRITE_4(sc, reg, \ 206 CSR_READ_4(sc, reg) | (x)) 207 208#define LGE_CLRBIT(sc, reg, x) \ 209 CSR_WRITE_4(sc, reg, \ 210 CSR_READ_4(sc, reg) & ~(x)) 211 212#define SIO_SET(x) \ 213 CSR_WRITE_4(sc, LGE_MEAR, CSR_READ_4(sc, LGE_MEAR) | x) 214 215#define SIO_CLR(x) \ 216 CSR_WRITE_4(sc, LGE_MEAR, CSR_READ_4(sc, LGE_MEAR) & ~x) 217 218/* 219 * Read a word of data stored in the EEPROM at address 'addr.' 220 */ 221static void 222lge_eeprom_getword(sc, addr, dest) 223 struct lge_softc *sc; 224 int addr; 225 u_int16_t *dest; 226{ 227 register int i; 228 u_int32_t val; 229 230 CSR_WRITE_4(sc, LGE_EECTL, LGE_EECTL_CMD_READ| 231 LGE_EECTL_SINGLEACCESS|((addr >> 1) << 8)); 232 233 for (i = 0; i < LGE_TIMEOUT; i++) 234 if (!(CSR_READ_4(sc, LGE_EECTL) & LGE_EECTL_CMD_READ)) 235 break; 236 237 if (i == LGE_TIMEOUT) { 238 printf("lge%d: EEPROM read timed out\n", sc->lge_unit); 239 return; 240 } 241 242 val = CSR_READ_4(sc, LGE_EEDATA); 243 244 if (addr & 1) 245 *dest = (val >> 16) & 0xFFFF; 246 else 247 *dest = val & 0xFFFF; 248 249 return; 250} 251 252/* 253 * Read a sequence of words from the EEPROM. 254 */ 255static void 256lge_read_eeprom(sc, dest, off, cnt, swap) 257 struct lge_softc *sc; 258 caddr_t dest; 259 int off; 260 int cnt; 261 int swap; 262{ 263 int i; 264 u_int16_t word = 0, *ptr; 265 266 for (i = 0; i < cnt; i++) { 267 lge_eeprom_getword(sc, off + i, &word); 268 ptr = (u_int16_t *)(dest + (i * 2)); 269 if (swap) 270 *ptr = ntohs(word); 271 else 272 *ptr = word; 273 } 274 275 return; 276} 277 278static int 279lge_miibus_readreg(dev, phy, reg) 280 device_t dev; 281 int phy, reg; 282{ 283 struct lge_softc *sc; 284 int i; 285 286 sc = device_get_softc(dev); 287 288 /* 289 * If we have a non-PCS PHY, pretend that the internal 290 * autoneg stuff at PHY address 0 isn't there so that 291 * the miibus code will find only the GMII PHY. 292 */ 293 if (sc->lge_pcs == 0 && phy == 0) 294 return(0); 295 296 CSR_WRITE_4(sc, LGE_GMIICTL, (phy << 8) | reg | LGE_GMIICMD_READ); 297 298 for (i = 0; i < LGE_TIMEOUT; i++) 299 if (!(CSR_READ_4(sc, LGE_GMIICTL) & LGE_GMIICTL_CMDBUSY)) 300 break; 301 302 if (i == LGE_TIMEOUT) { 303 printf("lge%d: PHY read timed out\n", sc->lge_unit); 304 return(0); 305 } 306 307 return(CSR_READ_4(sc, LGE_GMIICTL) >> 16); 308} 309 310static int 311lge_miibus_writereg(dev, phy, reg, data) 312 device_t dev; 313 int phy, reg, data; 314{ 315 struct lge_softc *sc; 316 int i; 317 318 sc = device_get_softc(dev); 319 320 CSR_WRITE_4(sc, LGE_GMIICTL, 321 (data << 16) | (phy << 8) | reg | LGE_GMIICMD_WRITE); 322 323 for (i = 0; i < LGE_TIMEOUT; i++) 324 if (!(CSR_READ_4(sc, LGE_GMIICTL) & LGE_GMIICTL_CMDBUSY)) 325 break; 326 327 if (i == LGE_TIMEOUT) { 328 printf("lge%d: PHY write timed out\n", sc->lge_unit); 329 return(0); 330 } 331 332 return(0); 333} 334 335static void 336lge_miibus_statchg(dev) 337 device_t dev; 338{ 339 struct lge_softc *sc; 340 struct mii_data *mii; 341 342 sc = device_get_softc(dev); 343 mii = device_get_softc(sc->lge_miibus); 344 345 LGE_CLRBIT(sc, LGE_GMIIMODE, LGE_GMIIMODE_SPEED); 346 switch (IFM_SUBTYPE(mii->mii_media_active)) { 347 case IFM_1000_T: 348 case IFM_1000_SX: 349 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_1000); 350 break; 351 case IFM_100_TX: 352 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_100); 353 break; 354 case IFM_10_T: 355 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_10); 356 break; 357 default: 358 /* 359 * Choose something, even if it's wrong. Clearing 360 * all the bits will hose autoneg on the internal 361 * PHY. 362 */ 363 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_1000); 364 break; 365 } 366 367 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 368 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_GMIIMODE_FDX); 369 } else { 370 LGE_CLRBIT(sc, LGE_GMIIMODE, LGE_GMIIMODE_FDX); 371 } 372 373 return; 374} 375 376static u_int32_t 377lge_crc(sc, addr) 378 struct lge_softc *sc; 379 caddr_t addr; 380{ 381 u_int32_t crc, carry; 382 int i, j; 383 u_int8_t c; 384 385 /* Compute CRC for the address value. */ 386 crc = 0xFFFFFFFF; /* initial value */ 387 388 for (i = 0; i < 6; i++) { 389 c = *(addr + i); 390 for (j = 0; j < 8; j++) { 391 carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); 392 crc <<= 1; 393 c >>= 1; 394 if (carry) 395 crc = (crc ^ 0x04c11db6) | carry; 396 } 397 } 398 399 /* 400 * return the filter bit position 401 */ 402 return((crc >> 26) & 0x0000003F); 403} 404 405static void 406lge_setmulti(sc) 407 struct lge_softc *sc; 408{ 409 struct ifnet *ifp; 410 struct ifmultiaddr *ifma; 411 u_int32_t h = 0, hashes[2] = { 0, 0 }; 412 413 ifp = &sc->arpcom.ac_if; 414 415 /* Make sure multicast hash table is enabled. */ 416 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_MCAST); 417 418 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 419 CSR_WRITE_4(sc, LGE_MAR0, 0xFFFFFFFF); 420 CSR_WRITE_4(sc, LGE_MAR1, 0xFFFFFFFF); 421 return; 422 } 423 424 /* first, zot all the existing hash bits */ 425 CSR_WRITE_4(sc, LGE_MAR0, 0); 426 CSR_WRITE_4(sc, LGE_MAR1, 0); 427 428 /* now program new ones */ 429 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 430 if (ifma->ifma_addr->sa_family != AF_LINK) 431 continue; 432 h = lge_crc(sc, LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 433 if (h < 32) 434 hashes[0] |= (1 << h); 435 else 436 hashes[1] |= (1 << (h - 32)); 437 } 438 439 CSR_WRITE_4(sc, LGE_MAR0, hashes[0]); 440 CSR_WRITE_4(sc, LGE_MAR1, hashes[1]); 441 442 return; 443} 444 445static void 446lge_reset(sc) 447 struct lge_softc *sc; 448{ 449 register int i; 450 451 LGE_SETBIT(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL0|LGE_MODE1_SOFTRST); 452 453 for (i = 0; i < LGE_TIMEOUT; i++) { 454 if (!(CSR_READ_4(sc, LGE_MODE1) & LGE_MODE1_SOFTRST)) 455 break; 456 } 457 458 if (i == LGE_TIMEOUT) 459 printf("lge%d: reset never completed\n", sc->lge_unit); 460 461 /* Wait a little while for the chip to get its brains in order. */ 462 DELAY(1000); 463 464 return; 465} 466 467/* 468 * Probe for a Level 1 chip. Check the PCI vendor and device 469 * IDs against our list and return a device name if we find a match. 470 */ 471static int 472lge_probe(dev) 473 device_t dev; 474{ 475 struct lge_type *t; 476 477 t = lge_devs; 478 479 while(t->lge_name != NULL) { 480 if ((pci_get_vendor(dev) == t->lge_vid) && 481 (pci_get_device(dev) == t->lge_did)) { 482 device_set_desc(dev, t->lge_name); 483 return(0); 484 } 485 t++; 486 } 487 488 return(ENXIO); 489} 490 491/* 492 * Attach the interface. Allocate softc structures, do ifmedia 493 * setup and ethernet/BPF attach. 494 */ 495static int 496lge_attach(dev) 497 device_t dev; 498{ 499 int s; 500 u_char eaddr[ETHER_ADDR_LEN]; 501 u_int32_t command; 502 struct lge_softc *sc; 503 struct ifnet *ifp; 504 int unit, error = 0, rid; 505 506 s = splimp(); 507 508 sc = device_get_softc(dev); 509 unit = device_get_unit(dev); 510 bzero(sc, sizeof(struct lge_softc)); 511 512 /* 513 * Handle power management nonsense. 514 */ 515 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 516 u_int32_t iobase, membase, irq; 517 518 /* Save important PCI config data. */ 519 iobase = pci_read_config(dev, LGE_PCI_LOIO, 4); 520 membase = pci_read_config(dev, LGE_PCI_LOMEM, 4); 521 irq = pci_read_config(dev, LGE_PCI_INTLINE, 4); 522 523 /* Reset the power state. */ 524 printf("lge%d: chip is in D%d power mode " 525 "-- setting to D0\n", unit, 526 pci_get_powerstate(dev)); 527 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 528 529 /* Restore PCI config data. */ 530 pci_write_config(dev, LGE_PCI_LOIO, iobase, 4); 531 pci_write_config(dev, LGE_PCI_LOMEM, membase, 4); 532 pci_write_config(dev, LGE_PCI_INTLINE, irq, 4); 533 } 534 535 /* 536 * Map control/status registers. 537 */ 538 pci_enable_busmaster(dev); 539 pci_enable_io(dev, SYS_RES_IOPORT); 540 pci_enable_io(dev, SYS_RES_MEMORY); 541 command = pci_read_config(dev, PCIR_COMMAND, 4); 542 543#ifdef LGE_USEIOSPACE 544 if (!(command & PCIM_CMD_PORTEN)) { 545 printf("lge%d: failed to enable I/O ports!\n", unit); 546 error = ENXIO;; 547 goto fail; 548 } 549#else 550 if (!(command & PCIM_CMD_MEMEN)) { 551 printf("lge%d: failed to enable memory mapping!\n", unit); 552 error = ENXIO;; 553 goto fail; 554 } 555#endif 556 557 rid = LGE_RID; 558 sc->lge_res = bus_alloc_resource(dev, LGE_RES, &rid, 559 0, ~0, 1, RF_ACTIVE); 560 561 if (sc->lge_res == NULL) { 562 printf("lge%d: couldn't map ports/memory\n", unit); 563 error = ENXIO; 564 goto fail; 565 } 566 567 sc->lge_btag = rman_get_bustag(sc->lge_res); 568 sc->lge_bhandle = rman_get_bushandle(sc->lge_res); 569 570 /* Allocate interrupt */ 571 rid = 0; 572 sc->lge_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 573 RF_SHAREABLE | RF_ACTIVE); 574 575 if (sc->lge_irq == NULL) { 576 printf("lge%d: couldn't map interrupt\n", unit); 577 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 578 error = ENXIO; 579 goto fail; 580 } 581 582 error = bus_setup_intr(dev, sc->lge_irq, INTR_TYPE_NET, 583 lge_intr, sc, &sc->lge_intrhand); 584 585 if (error) { 586 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq); 587 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 588 printf("lge%d: couldn't set up irq\n", unit); 589 goto fail; 590 } 591 592 /* Reset the adapter. */ 593 lge_reset(sc); 594 595 /* 596 * Get station address from the EEPROM. 597 */ 598 lge_read_eeprom(sc, (caddr_t)&eaddr[0], LGE_EE_NODEADDR_0, 1, 0); 599 lge_read_eeprom(sc, (caddr_t)&eaddr[2], LGE_EE_NODEADDR_1, 1, 0); 600 lge_read_eeprom(sc, (caddr_t)&eaddr[4], LGE_EE_NODEADDR_2, 1, 0); 601 602 /* 603 * A Level 1 chip was detected. Inform the world. 604 */ 605 printf("lge%d: Ethernet address: %6D\n", unit, eaddr, ":"); 606 607 sc->lge_unit = unit; 608 callout_handle_init(&sc->lge_stat_ch); 609 bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 610 611 sc->lge_ldata = contigmalloc(sizeof(struct lge_list_data), M_DEVBUF, 612 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 613 614 if (sc->lge_ldata == NULL) { 615 printf("lge%d: no memory for list buffers!\n", unit); 616 bus_teardown_intr(dev, sc->lge_irq, sc->lge_intrhand); 617 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq); 618 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 619 error = ENXIO; 620 goto fail; 621 } 622 bzero(sc->lge_ldata, sizeof(struct lge_list_data)); 623 624 /* Try to allocate memory for jumbo buffers. */ 625 if (lge_alloc_jumbo_mem(sc)) { 626 printf("lge%d: jumbo buffer allocation failed\n", 627 sc->lge_unit); 628 contigfree(sc->lge_ldata, 629 sizeof(struct lge_list_data), M_DEVBUF); 630 bus_teardown_intr(dev, sc->lge_irq, sc->lge_intrhand); 631 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq); 632 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 633 error = ENXIO; 634 goto fail; 635 } 636 637 ifp = &sc->arpcom.ac_if; 638 ifp->if_softc = sc; 639 ifp->if_unit = unit; 640 ifp->if_name = "lge"; 641 ifp->if_mtu = ETHERMTU; 642 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 643 ifp->if_ioctl = lge_ioctl; 644 ifp->if_output = ether_output; 645 ifp->if_start = lge_start; 646 ifp->if_watchdog = lge_watchdog; 647 ifp->if_init = lge_init; 648 ifp->if_baudrate = 1000000000; 649 ifp->if_snd.ifq_maxlen = LGE_TX_LIST_CNT - 1; 650 ifp->if_capabilities = IFCAP_RXCSUM; 651 ifp->if_capenable = ifp->if_capabilities; 652 653 if (CSR_READ_4(sc, LGE_GMIIMODE) & LGE_GMIIMODE_PCSENH) 654 sc->lge_pcs = 1; 655 else 656 sc->lge_pcs = 0; 657 658 /* 659 * Do MII setup. 660 */ 661 if (mii_phy_probe(dev, &sc->lge_miibus, 662 lge_ifmedia_upd, lge_ifmedia_sts)) { 663 printf("lge%d: MII without any PHY!\n", sc->lge_unit); 664 contigfree(sc->lge_ldata, 665 sizeof(struct lge_list_data), M_DEVBUF); 666 lge_free_jumbo_mem(sc); 667 bus_teardown_intr(dev, sc->lge_irq, sc->lge_intrhand); 668 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq); 669 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 670 error = ENXIO; 671 goto fail; 672 } 673 674 /* 675 * Call MI attach routine. 676 */ 677 ether_ifattach(ifp, ETHER_BPF_SUPPORTED); 678 callout_handle_init(&sc->lge_stat_ch); 679 680fail: 681 splx(s); 682 return(error); 683} 684 685static int 686lge_detach(dev) 687 device_t dev; 688{ 689 struct lge_softc *sc; 690 struct ifnet *ifp; 691 int s; 692 693 s = splimp(); 694 695 sc = device_get_softc(dev); 696 ifp = &sc->arpcom.ac_if; 697 698 lge_reset(sc); 699 lge_stop(sc); 700 ether_ifdetach(ifp, ETHER_BPF_SUPPORTED); 701 702 bus_generic_detach(dev); 703 device_delete_child(dev, sc->lge_miibus); 704 705 bus_teardown_intr(dev, sc->lge_irq, sc->lge_intrhand); 706 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq); 707 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 708 709 contigfree(sc->lge_ldata, sizeof(struct lge_list_data), M_DEVBUF); 710 lge_free_jumbo_mem(sc); 711 712 splx(s); 713 714 return(0); 715} 716 717/* 718 * Initialize the transmit descriptors. 719 */ 720static int 721lge_list_tx_init(sc) 722 struct lge_softc *sc; 723{ 724 struct lge_list_data *ld; 725 struct lge_ring_data *cd; 726 int i; 727 728 cd = &sc->lge_cdata; 729 ld = sc->lge_ldata; 730 for (i = 0; i < LGE_TX_LIST_CNT; i++) { 731 ld->lge_tx_list[i].lge_mbuf = NULL; 732 ld->lge_tx_list[i].lge_ctl = 0; 733 } 734 735 cd->lge_tx_prod = cd->lge_tx_cons = 0; 736 737 return(0); 738} 739 740 741/* 742 * Initialize the RX descriptors and allocate mbufs for them. Note that 743 * we arralge the descriptors in a closed ring, so that the last descriptor 744 * points back to the first. 745 */ 746static int 747lge_list_rx_init(sc) 748 struct lge_softc *sc; 749{ 750 struct lge_list_data *ld; 751 struct lge_ring_data *cd; 752 int i; 753 754 ld = sc->lge_ldata; 755 cd = &sc->lge_cdata; 756 757 cd->lge_rx_prod = cd->lge_rx_cons = 0; 758 759 CSR_WRITE_4(sc, LGE_RXDESC_ADDR_HI, 0); 760 761 for (i = 0; i < LGE_RX_LIST_CNT; i++) { 762 if (CSR_READ_1(sc, LGE_RXCMDFREE_8BIT) == 0) 763 break; 764 if (lge_newbuf(sc, &ld->lge_rx_list[i], NULL) == ENOBUFS) 765 return(ENOBUFS); 766 } 767 768 /* Clear possible 'rx command queue empty' interrupt. */ 769 CSR_READ_4(sc, LGE_ISR); 770 771 return(0); 772} 773 774/* 775 * Initialize an RX descriptor and attach an MBUF cluster. 776 */ 777static int 778lge_newbuf(sc, c, m) 779 struct lge_softc *sc; 780 struct lge_rx_desc *c; 781 struct mbuf *m; 782{ 783 struct mbuf *m_new = NULL; 784 caddr_t *buf = NULL; 785 786 if (m == NULL) { 787 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 788 if (m_new == NULL) { 789 printf("lge%d: no memory for rx list " 790 "-- packet dropped!\n", sc->lge_unit); 791 return(ENOBUFS); 792 } 793 794 /* Allocate the jumbo buffer */ 795 buf = lge_jalloc(sc); 796 if (buf == NULL) { 797#ifdef LGE_VERBOSE 798 printf("lge%d: jumbo allocation failed " 799 "-- packet dropped!\n", sc->lge_unit); 800#endif 801 m_freem(m_new); 802 return(ENOBUFS); 803 } 804 /* Attach the buffer to the mbuf */ 805 m_new->m_data = (void *)buf; 806 m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN; 807 MEXTADD(m_new, buf, LGE_JUMBO_FRAMELEN, lge_jfree, 808 (struct lge_softc *)sc, 0, EXT_NET_DRV); 809 } else { 810 m_new = m; 811 m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN; 812 m_new->m_data = m_new->m_ext.ext_buf; 813 } 814 815 /* 816 * Adjust alignment so packet payload begins on a 817 * longword boundary. Mandatory for Alpha, useful on 818 * x86 too. 819 */ 820 m_adj(m_new, ETHER_ALIGN); 821 822 c->lge_mbuf = m_new; 823 c->lge_fragptr_hi = 0; 824 c->lge_fragptr_lo = vtophys(mtod(m_new, caddr_t)); 825 c->lge_fraglen = m_new->m_len; 826 c->lge_ctl = m_new->m_len | LGE_RXCTL_WANTINTR | LGE_FRAGCNT(1); 827 c->lge_sts = 0; 828 829 /* 830 * Put this buffer in the RX command FIFO. To do this, 831 * we just write the physical address of the descriptor 832 * into the RX descriptor address registers. Note that 833 * there are two registers, one high DWORD and one low 834 * DWORD, which lets us specify a 64-bit address if 835 * desired. We only use a 32-bit address for now. 836 * Writing to the low DWORD register is what actually 837 * causes the command to be issued, so we do that 838 * last. 839 */ 840 CSR_WRITE_4(sc, LGE_RXDESC_ADDR_LO, vtophys(c)); 841 LGE_INC(sc->lge_cdata.lge_rx_prod, LGE_RX_LIST_CNT); 842 843 return(0); 844} 845 846static int 847lge_alloc_jumbo_mem(sc) 848 struct lge_softc *sc; 849{ 850 caddr_t ptr; 851 register int i; 852 struct lge_jpool_entry *entry; 853 854 /* Grab a big chunk o' storage. */ 855 sc->lge_cdata.lge_jumbo_buf = contigmalloc(LGE_JMEM, M_DEVBUF, 856 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 857 858 if (sc->lge_cdata.lge_jumbo_buf == NULL) { 859 printf("lge%d: no memory for jumbo buffers!\n", sc->lge_unit); 860 return(ENOBUFS); 861 } 862 863 SLIST_INIT(&sc->lge_jfree_listhead); 864 SLIST_INIT(&sc->lge_jinuse_listhead); 865 866 /* 867 * Now divide it up into 9K pieces and save the addresses 868 * in an array. 869 */ 870 ptr = sc->lge_cdata.lge_jumbo_buf; 871 for (i = 0; i < LGE_JSLOTS; i++) { 872 sc->lge_cdata.lge_jslots[i] = ptr; 873 ptr += LGE_JLEN; 874 entry = malloc(sizeof(struct lge_jpool_entry), 875 M_DEVBUF, M_NOWAIT); 876 if (entry == NULL) { 877 printf("lge%d: no memory for jumbo " 878 "buffer queue!\n", sc->lge_unit); 879 return(ENOBUFS); 880 } 881 entry->slot = i; 882 SLIST_INSERT_HEAD(&sc->lge_jfree_listhead, 883 entry, jpool_entries); 884 } 885 886 return(0); 887} 888 889static void 890lge_free_jumbo_mem(sc) 891 struct lge_softc *sc; 892{ 893 int i; 894 struct lge_jpool_entry *entry; 895 896 for (i = 0; i < LGE_JSLOTS; i++) { 897 entry = SLIST_FIRST(&sc->lge_jfree_listhead); 898 SLIST_REMOVE_HEAD(&sc->lge_jfree_listhead, jpool_entries); 899 free(entry, M_DEVBUF); 900 } 901 902 contigfree(sc->lge_cdata.lge_jumbo_buf, LGE_JMEM, M_DEVBUF); 903 904 return; 905} 906 907/* 908 * Allocate a jumbo buffer. 909 */ 910static void * 911lge_jalloc(sc) 912 struct lge_softc *sc; 913{ 914 struct lge_jpool_entry *entry; 915 916 entry = SLIST_FIRST(&sc->lge_jfree_listhead); 917 918 if (entry == NULL) { 919#ifdef LGE_VERBOSE 920 printf("lge%d: no free jumbo buffers\n", sc->lge_unit); 921#endif 922 return(NULL); 923 } 924 925 SLIST_REMOVE_HEAD(&sc->lge_jfree_listhead, jpool_entries); 926 SLIST_INSERT_HEAD(&sc->lge_jinuse_listhead, entry, jpool_entries); 927 return(sc->lge_cdata.lge_jslots[entry->slot]); 928} 929 930/* 931 * Release a jumbo buffer. 932 */ 933static void 934lge_jfree(buf, args) 935 void *buf; 936 void *args; 937{ 938 struct lge_softc *sc; 939 int i; 940 struct lge_jpool_entry *entry; 941 942 /* Extract the softc struct pointer. */ 943 sc = args; 944 945 if (sc == NULL) 946 panic("lge_jfree: can't find softc pointer!"); 947 948 /* calculate the slot this buffer belongs to */ 949 i = ((vm_offset_t)buf 950 - (vm_offset_t)sc->lge_cdata.lge_jumbo_buf) / LGE_JLEN; 951 952 if ((i < 0) || (i >= LGE_JSLOTS)) 953 panic("lge_jfree: asked to free buffer that we don't manage!"); 954 955 entry = SLIST_FIRST(&sc->lge_jinuse_listhead); 956 if (entry == NULL) 957 panic("lge_jfree: buffer not in use!"); 958 entry->slot = i; 959 SLIST_REMOVE_HEAD(&sc->lge_jinuse_listhead, jpool_entries); 960 SLIST_INSERT_HEAD(&sc->lge_jfree_listhead, entry, jpool_entries); 961 962 return; 963} 964 965/* 966 * A frame has been uploaded: pass the resulting mbuf chain up to 967 * the higher level protocols. 968 */ 969static void 970lge_rxeof(sc, cnt) 971 struct lge_softc *sc; 972 int cnt; 973{ 974 struct ether_header *eh; 975 struct mbuf *m; 976 struct ifnet *ifp; 977 struct lge_rx_desc *cur_rx; 978 int c, i, total_len = 0; 979 u_int32_t rxsts, rxctl; 980 981 ifp = &sc->arpcom.ac_if; 982 983 /* Find out how many frames were processed. */ 984 c = cnt; 985 i = sc->lge_cdata.lge_rx_cons; 986 987 /* Suck them in. */ 988 while(c) { 989 struct mbuf *m0 = NULL; 990 991 cur_rx = &sc->lge_ldata->lge_rx_list[i]; 992 rxctl = cur_rx->lge_ctl; 993 rxsts = cur_rx->lge_sts; 994 m = cur_rx->lge_mbuf; 995 cur_rx->lge_mbuf = NULL; 996 total_len = LGE_RXBYTES(cur_rx); 997 LGE_INC(i, LGE_RX_LIST_CNT); 998 c--; 999 1000 /* 1001 * If an error occurs, update stats, clear the 1002 * status word and leave the mbuf cluster in place: 1003 * it should simply get re-used next time this descriptor 1004 * comes up in the ring. 1005 */ 1006 if (rxctl & LGE_RXCTL_ERRMASK) { 1007 ifp->if_ierrors++; 1008 lge_newbuf(sc, &LGE_RXTAIL(sc), m); 1009 continue; 1010 } 1011 1012 if (lge_newbuf(sc, &LGE_RXTAIL(sc), NULL) == ENOBUFS) { 1013 m0 = m_devget(mtod(m, char *), total_len, ETHER_ALIGN, 1014 ifp, NULL); 1015 lge_newbuf(sc, &LGE_RXTAIL(sc), m); 1016 if (m0 == NULL) { 1017 printf("lge%d: no receive buffers " 1018 "available -- packet dropped!\n", 1019 sc->lge_unit); 1020 ifp->if_ierrors++; 1021 continue; 1022 } 1023 m = m0; 1024 } else { 1025 m->m_pkthdr.rcvif = ifp; 1026 m->m_pkthdr.len = m->m_len = total_len; 1027 } 1028 1029 ifp->if_ipackets++; 1030 eh = mtod(m, struct ether_header *); 1031 1032 /* Remove header from mbuf and pass it on. */ 1033 m_adj(m, sizeof(struct ether_header)); 1034 1035 /* Do IP checksum checking. */ 1036 if (rxsts & LGE_RXSTS_ISIP) 1037 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1038 if (!(rxsts & LGE_RXSTS_IPCSUMERR)) 1039 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1040 if ((rxsts & LGE_RXSTS_ISTCP && 1041 !(rxsts & LGE_RXSTS_TCPCSUMERR)) || 1042 (rxsts & LGE_RXSTS_ISUDP && 1043 !(rxsts & LGE_RXSTS_UDPCSUMERR))) { 1044 m->m_pkthdr.csum_flags |= 1045 CSUM_DATA_VALID|CSUM_PSEUDO_HDR; 1046 m->m_pkthdr.csum_data = 0xffff; 1047 } 1048 1049 ether_input(ifp, eh, m); 1050 } 1051 1052 sc->lge_cdata.lge_rx_cons = i; 1053 1054 return; 1055} 1056 1057static void 1058lge_rxeoc(sc) 1059 struct lge_softc *sc; 1060{ 1061 struct ifnet *ifp; 1062 1063 ifp = &sc->arpcom.ac_if; 1064 ifp->if_flags &= ~IFF_RUNNING; 1065 lge_init(sc); 1066 return; 1067} 1068 1069/* 1070 * A frame was downloaded to the chip. It's safe for us to clean up 1071 * the list buffers. 1072 */ 1073 1074static void 1075lge_txeof(sc) 1076 struct lge_softc *sc; 1077{ 1078 struct lge_tx_desc *cur_tx = NULL; 1079 struct ifnet *ifp; 1080 u_int32_t idx, txdone; 1081 1082 ifp = &sc->arpcom.ac_if; 1083 1084 /* Clear the timeout timer. */ 1085 ifp->if_timer = 0; 1086 1087 /* 1088 * Go through our tx list and free mbufs for those 1089 * frames that have been transmitted. 1090 */ 1091 idx = sc->lge_cdata.lge_tx_cons; 1092 txdone = CSR_READ_1(sc, LGE_TXDMADONE_8BIT); 1093 1094 while (idx != sc->lge_cdata.lge_tx_prod && txdone) { 1095 cur_tx = &sc->lge_ldata->lge_tx_list[idx]; 1096 1097 ifp->if_opackets++; 1098 if (cur_tx->lge_mbuf != NULL) { 1099 m_freem(cur_tx->lge_mbuf); 1100 cur_tx->lge_mbuf = NULL; 1101 } 1102 cur_tx->lge_ctl = 0; 1103 1104 txdone--; 1105 LGE_INC(idx, LGE_TX_LIST_CNT); 1106 ifp->if_timer = 0; 1107 } 1108 1109 sc->lge_cdata.lge_tx_cons = idx; 1110 1111 if (cur_tx != NULL) 1112 ifp->if_flags &= ~IFF_OACTIVE; 1113 1114 return; 1115} 1116 1117static void 1118lge_tick(xsc) 1119 void *xsc; 1120{ 1121 struct lge_softc *sc; 1122 struct mii_data *mii; 1123 struct ifnet *ifp; 1124 int s; 1125 1126 s = splimp(); 1127 1128 sc = xsc; 1129 ifp = &sc->arpcom.ac_if; 1130 1131 CSR_WRITE_4(sc, LGE_STATSIDX, LGE_STATS_SINGLE_COLL_PKTS); 1132 ifp->if_collisions += CSR_READ_4(sc, LGE_STATSVAL); 1133 CSR_WRITE_4(sc, LGE_STATSIDX, LGE_STATS_MULTI_COLL_PKTS); 1134 ifp->if_collisions += CSR_READ_4(sc, LGE_STATSVAL); 1135 1136 if (!sc->lge_link) { 1137 mii = device_get_softc(sc->lge_miibus); 1138 mii_tick(mii); 1139 if (mii->mii_media_status & IFM_ACTIVE && 1140 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 1141 sc->lge_link++; 1142 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX|| 1143 IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) 1144 printf("lge%d: gigabit link up\n", 1145 sc->lge_unit); 1146 if (ifp->if_snd.ifq_head != NULL) 1147 lge_start(ifp); 1148 } 1149 } 1150 1151 sc->lge_stat_ch = timeout(lge_tick, sc, hz); 1152 1153 splx(s); 1154 1155 return; 1156} 1157 1158static void 1159lge_intr(arg) 1160 void *arg; 1161{ 1162 struct lge_softc *sc; 1163 struct ifnet *ifp; 1164 u_int32_t status; 1165 1166 sc = arg; 1167 ifp = &sc->arpcom.ac_if; 1168 1169 /* Supress unwanted interrupts */ 1170 if (!(ifp->if_flags & IFF_UP)) { 1171 lge_stop(sc); 1172 return; 1173 } 1174 1175 for (;;) { 1176 /* 1177 * Reading the ISR register clears all interrupts, and 1178 * clears the 'interrupts enabled' bit in the IMR 1179 * register. 1180 */ 1181 status = CSR_READ_4(sc, LGE_ISR); 1182 1183 if ((status & LGE_INTRS) == 0) 1184 break; 1185 1186 if ((status & (LGE_ISR_TXCMDFIFO_EMPTY|LGE_ISR_TXDMA_DONE))) 1187 lge_txeof(sc); 1188 1189 if (status & LGE_ISR_RXDMA_DONE) 1190 lge_rxeof(sc, LGE_RX_DMACNT(status)); 1191 1192 if (status & LGE_ISR_RXCMDFIFO_EMPTY) 1193 lge_rxeoc(sc); 1194 1195 if (status & LGE_ISR_PHY_INTR) { 1196 sc->lge_link = 0; 1197 untimeout(lge_tick, sc, sc->lge_stat_ch); 1198 lge_tick(sc); 1199 } 1200 } 1201 1202 /* Re-enable interrupts. */ 1203 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_SETRST_CTL0|LGE_IMR_INTR_ENB); 1204 1205 if (ifp->if_snd.ifq_head != NULL) 1206 lge_start(ifp); 1207 1208 return; 1209} 1210 1211/* 1212 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1213 * pointers to the fragment pointers. 1214 */ 1215static int 1216lge_encap(sc, m_head, txidx) 1217 struct lge_softc *sc; 1218 struct mbuf *m_head; 1219 u_int32_t *txidx; 1220{ 1221 struct lge_frag *f = NULL; 1222 struct lge_tx_desc *cur_tx; 1223 struct mbuf *m; 1224 int frag = 0, tot_len = 0; 1225 1226 /* 1227 * Start packing the mbufs in this chain into 1228 * the fragment pointers. Stop when we run out 1229 * of fragments or hit the end of the mbuf chain. 1230 */ 1231 m = m_head; 1232 cur_tx = &sc->lge_ldata->lge_tx_list[*txidx]; 1233 frag = 0; 1234 1235 for (m = m_head; m != NULL; m = m->m_next) { 1236 if (m->m_len != 0) { 1237 tot_len += m->m_len; 1238 f = &cur_tx->lge_frags[frag]; 1239 f->lge_fraglen = m->m_len; 1240 f->lge_fragptr_lo = vtophys(mtod(m, vm_offset_t)); 1241 f->lge_fragptr_hi = 0; 1242 frag++; 1243 } 1244 } 1245 1246 if (m != NULL) 1247 return(ENOBUFS); 1248 1249 cur_tx->lge_mbuf = m_head; 1250 cur_tx->lge_ctl = LGE_TXCTL_WANTINTR|LGE_FRAGCNT(frag)|tot_len; 1251 LGE_INC((*txidx), LGE_TX_LIST_CNT); 1252 1253 /* Queue for transmit */ 1254 CSR_WRITE_4(sc, LGE_TXDESC_ADDR_LO, vtophys(cur_tx)); 1255 1256 return(0); 1257} 1258 1259/* 1260 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1261 * to the mbuf data regions directly in the transmit lists. We also save a 1262 * copy of the pointers since the transmit list fragment pointers are 1263 * physical addresses. 1264 */ 1265 1266static void 1267lge_start(ifp) 1268 struct ifnet *ifp; 1269{ 1270 struct lge_softc *sc; 1271 struct mbuf *m_head = NULL; 1272 u_int32_t idx; 1273 1274 sc = ifp->if_softc; 1275 1276 if (!sc->lge_link) 1277 return; 1278 1279 idx = sc->lge_cdata.lge_tx_prod; 1280 1281 if (ifp->if_flags & IFF_OACTIVE) 1282 return; 1283 1284 while(sc->lge_ldata->lge_tx_list[idx].lge_mbuf == NULL) { 1285 if (CSR_READ_1(sc, LGE_TXCMDFREE_8BIT) == 0) 1286 break; 1287 1288 IF_DEQUEUE(&ifp->if_snd, m_head); 1289 if (m_head == NULL) 1290 break; 1291 1292 if (lge_encap(sc, m_head, &idx)) { 1293 IF_PREPEND(&ifp->if_snd, m_head); 1294 ifp->if_flags |= IFF_OACTIVE; 1295 break; 1296 } 1297 1298 /* 1299 * If there's a BPF listener, bounce a copy of this frame 1300 * to him. 1301 */ 1302 if (ifp->if_bpf) 1303 bpf_mtap(ifp, m_head); 1304 } 1305 1306 sc->lge_cdata.lge_tx_prod = idx; 1307 1308 /* 1309 * Set a timeout in case the chip goes out to lunch. 1310 */ 1311 ifp->if_timer = 5; 1312 1313 return; 1314} 1315 1316static void 1317lge_init(xsc) 1318 void *xsc; 1319{ 1320 struct lge_softc *sc = xsc; 1321 struct ifnet *ifp = &sc->arpcom.ac_if; 1322 struct mii_data *mii; 1323 int s; 1324 1325 if (ifp->if_flags & IFF_RUNNING) 1326 return; 1327 1328 s = splimp(); 1329 1330 /* 1331 * Cancel pending I/O and free all RX/TX buffers. 1332 */ 1333 lge_stop(sc); 1334 lge_reset(sc); 1335 1336 mii = device_get_softc(sc->lge_miibus); 1337 1338 /* Set MAC address */ 1339 CSR_WRITE_4(sc, LGE_PAR0, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); 1340 CSR_WRITE_4(sc, LGE_PAR1, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); 1341 1342 /* Init circular RX list. */ 1343 if (lge_list_rx_init(sc) == ENOBUFS) { 1344 printf("lge%d: initialization failed: no " 1345 "memory for rx buffers\n", sc->lge_unit); 1346 lge_stop(sc); 1347 (void)splx(s); 1348 return; 1349 } 1350 1351 /* 1352 * Init tx descriptors. 1353 */ 1354 lge_list_tx_init(sc); 1355 1356 /* Set initial value for MODE1 register. */ 1357 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_UCAST| 1358 LGE_MODE1_TX_CRC|LGE_MODE1_TXPAD| 1359 LGE_MODE1_RX_FLOWCTL|LGE_MODE1_SETRST_CTL0| 1360 LGE_MODE1_SETRST_CTL1|LGE_MODE1_SETRST_CTL2); 1361 1362 /* If we want promiscuous mode, set the allframes bit. */ 1363 if (ifp->if_flags & IFF_PROMISC) { 1364 CSR_WRITE_4(sc, LGE_MODE1, 1365 LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_PROMISC); 1366 } else { 1367 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_PROMISC); 1368 } 1369 1370 /* 1371 * Set the capture broadcast bit to capture broadcast frames. 1372 */ 1373 if (ifp->if_flags & IFF_BROADCAST) { 1374 CSR_WRITE_4(sc, LGE_MODE1, 1375 LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_BCAST); 1376 } else { 1377 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_BCAST); 1378 } 1379 1380 /* Packet padding workaround? */ 1381 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RMVPAD); 1382 1383 /* No error frames */ 1384 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_ERRPKTS); 1385 1386 /* Receive large frames */ 1387 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_GIANTS); 1388 1389 /* Workaround: disable RX/TX flow control */ 1390 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_TX_FLOWCTL); 1391 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_FLOWCTL); 1392 1393 /* Make sure to strip CRC from received frames */ 1394 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_CRC); 1395 1396 /* Turn off magic packet mode */ 1397 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_MPACK_ENB); 1398 1399 /* Turn off all VLAN stuff */ 1400 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_VLAN_RX|LGE_MODE1_VLAN_TX| 1401 LGE_MODE1_VLAN_STRIP|LGE_MODE1_VLAN_INSERT); 1402 1403 /* Workarond: FIFO overflow */ 1404 CSR_WRITE_2(sc, LGE_RXFIFO_HIWAT, 0x3FFF); 1405 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_SETRST_CTL1|LGE_IMR_RXFIFO_WAT); 1406 1407 /* 1408 * Load the multicast filter. 1409 */ 1410 lge_setmulti(sc); 1411 1412 /* 1413 * Enable hardware checksum validation for all received IPv4 1414 * packets, do not reject packets with bad checksums. 1415 */ 1416 CSR_WRITE_4(sc, LGE_MODE2, LGE_MODE2_RX_IPCSUM| 1417 LGE_MODE2_RX_TCPCSUM|LGE_MODE2_RX_UDPCSUM| 1418 LGE_MODE2_RX_ERRCSUM); 1419 1420 /* 1421 * Enable the delivery of PHY interrupts based on 1422 * link/speed/duplex status chalges. 1423 */ 1424 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL0|LGE_MODE1_GMIIPOLL); 1425 1426 /* Enable receiver and transmitter. */ 1427 CSR_WRITE_4(sc, LGE_RXDESC_ADDR_HI, 0); 1428 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_ENB); 1429 1430 CSR_WRITE_4(sc, LGE_TXDESC_ADDR_HI, 0); 1431 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_TX_ENB); 1432 1433 /* 1434 * Enable interrupts. 1435 */ 1436 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_SETRST_CTL0| 1437 LGE_IMR_SETRST_CTL1|LGE_IMR_INTR_ENB|LGE_INTRS); 1438 1439 lge_ifmedia_upd(ifp); 1440 1441 ifp->if_flags |= IFF_RUNNING; 1442 ifp->if_flags &= ~IFF_OACTIVE; 1443 1444 (void)splx(s); 1445 1446 sc->lge_stat_ch = timeout(lge_tick, sc, hz); 1447 1448 return; 1449} 1450 1451/* 1452 * Set media options. 1453 */ 1454static int 1455lge_ifmedia_upd(ifp) 1456 struct ifnet *ifp; 1457{ 1458 struct lge_softc *sc; 1459 struct mii_data *mii; 1460 1461 sc = ifp->if_softc; 1462 1463 mii = device_get_softc(sc->lge_miibus); 1464 sc->lge_link = 0; 1465 if (mii->mii_instance) { 1466 struct mii_softc *miisc; 1467 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL; 1468 miisc = LIST_NEXT(miisc, mii_list)) 1469 mii_phy_reset(miisc); 1470 } 1471 mii_mediachg(mii); 1472 1473 return(0); 1474} 1475 1476/* 1477 * Report current media status. 1478 */ 1479static void 1480lge_ifmedia_sts(ifp, ifmr) 1481 struct ifnet *ifp; 1482 struct ifmediareq *ifmr; 1483{ 1484 struct lge_softc *sc; 1485 struct mii_data *mii; 1486 1487 sc = ifp->if_softc; 1488 1489 mii = device_get_softc(sc->lge_miibus); 1490 mii_pollstat(mii); 1491 ifmr->ifm_active = mii->mii_media_active; 1492 ifmr->ifm_status = mii->mii_media_status; 1493 1494 return; 1495} 1496 1497static int 1498lge_ioctl(ifp, command, data) 1499 struct ifnet *ifp; 1500 u_long command; 1501 caddr_t data; 1502{ 1503 struct lge_softc *sc = ifp->if_softc; 1504 struct ifreq *ifr = (struct ifreq *) data; 1505 struct mii_data *mii; 1506 int s, error = 0; 1507 1508 s = splimp(); 1509 1510 switch(command) { 1511 case SIOCSIFADDR: 1512 case SIOCGIFADDR: 1513 error = ether_ioctl(ifp, command, data); 1514 break; 1515 case SIOCSIFMTU: 1516 if (ifr->ifr_mtu > LGE_JUMBO_MTU) 1517 error = EINVAL; 1518 else 1519 ifp->if_mtu = ifr->ifr_mtu; 1520 break; 1521 case SIOCSIFFLAGS: 1522 if (ifp->if_flags & IFF_UP) { 1523 if (ifp->if_flags & IFF_RUNNING && 1524 ifp->if_flags & IFF_PROMISC && 1525 !(sc->lge_if_flags & IFF_PROMISC)) { 1526 CSR_WRITE_4(sc, LGE_MODE1, 1527 LGE_MODE1_SETRST_CTL1| 1528 LGE_MODE1_RX_PROMISC); 1529 } else if (ifp->if_flags & IFF_RUNNING && 1530 !(ifp->if_flags & IFF_PROMISC) && 1531 sc->lge_if_flags & IFF_PROMISC) { 1532 CSR_WRITE_4(sc, LGE_MODE1, 1533 LGE_MODE1_RX_PROMISC); 1534 } else { 1535 ifp->if_flags &= ~IFF_RUNNING; 1536 lge_init(sc); 1537 } 1538 } else { 1539 if (ifp->if_flags & IFF_RUNNING) 1540 lge_stop(sc); 1541 } 1542 sc->lge_if_flags = ifp->if_flags; 1543 error = 0; 1544 break; 1545 case SIOCADDMULTI: 1546 case SIOCDELMULTI: 1547 lge_setmulti(sc); 1548 error = 0; 1549 break; 1550 case SIOCGIFMEDIA: 1551 case SIOCSIFMEDIA: 1552 mii = device_get_softc(sc->lge_miibus); 1553 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 1554 break; 1555 default: 1556 error = EINVAL; 1557 break; 1558 } 1559 1560 (void)splx(s); 1561 1562 return(error); 1563} 1564 1565static void 1566lge_watchdog(ifp) 1567 struct ifnet *ifp; 1568{ 1569 struct lge_softc *sc; 1570 1571 sc = ifp->if_softc; 1572 1573 ifp->if_oerrors++; 1574 printf("lge%d: watchdog timeout\n", sc->lge_unit); 1575 1576 lge_stop(sc); 1577 lge_reset(sc); 1578 ifp->if_flags &= ~IFF_RUNNING; 1579 lge_init(sc); 1580 1581 if (ifp->if_snd.ifq_head != NULL) 1582 lge_start(ifp); 1583 1584 return; 1585} 1586 1587/* 1588 * Stop the adapter and free any mbufs allocated to the 1589 * RX and TX lists. 1590 */ 1591static void 1592lge_stop(sc) 1593 struct lge_softc *sc; 1594{ 1595 register int i; 1596 struct ifnet *ifp; 1597 1598 ifp = &sc->arpcom.ac_if; 1599 ifp->if_timer = 0; 1600 untimeout(lge_tick, sc, sc->lge_stat_ch); 1601 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_INTR_ENB); 1602 1603 /* Disable receiver and transmitter. */ 1604 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_ENB|LGE_MODE1_TX_ENB); 1605 sc->lge_link = 0; 1606 1607 /* 1608 * Free data in the RX lists. 1609 */ 1610 for (i = 0; i < LGE_RX_LIST_CNT; i++) { 1611 if (sc->lge_ldata->lge_rx_list[i].lge_mbuf != NULL) { 1612 m_freem(sc->lge_ldata->lge_rx_list[i].lge_mbuf); 1613 sc->lge_ldata->lge_rx_list[i].lge_mbuf = NULL; 1614 } 1615 } 1616 bzero((char *)&sc->lge_ldata->lge_rx_list, 1617 sizeof(sc->lge_ldata->lge_rx_list)); 1618 1619 /* 1620 * Free the TX list buffers. 1621 */ 1622 for (i = 0; i < LGE_TX_LIST_CNT; i++) { 1623 if (sc->lge_ldata->lge_tx_list[i].lge_mbuf != NULL) { 1624 m_freem(sc->lge_ldata->lge_tx_list[i].lge_mbuf); 1625 sc->lge_ldata->lge_tx_list[i].lge_mbuf = NULL; 1626 } 1627 } 1628 1629 bzero((char *)&sc->lge_ldata->lge_tx_list, 1630 sizeof(sc->lge_ldata->lge_tx_list)); 1631 1632 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1633 1634 return; 1635} 1636 1637/* 1638 * Stop all chip I/O so that the kernel's probe routines don't 1639 * get confused by errant DMAs when rebooting. 1640 */ 1641static void 1642lge_shutdown(dev) 1643 device_t dev; 1644{ 1645 struct lge_softc *sc; 1646 1647 sc = device_get_softc(dev); 1648 1649 lge_reset(sc); 1650 lge_stop(sc); 1651 1652 return; 1653} 1654