1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2001 Wind River Systems 5 * Copyright (c) 1997, 1998, 1999, 2000, 2001 6 * Bill Paul <william.paul@windriver.com>. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Bill Paul. 19 * 4. Neither the name of the author nor the names of any co-contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 33 * THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 /* 40 * Level 1 LXT1001 gigabit ethernet driver for FreeBSD. Public 41 * documentation not available, but ask me nicely. 42 * 43 * The Level 1 chip is used on some D-Link, SMC and Addtron NICs. 44 * It's a 64-bit PCI part that supports TCP/IP checksum offload, 45 * VLAN tagging/insertion, GMII and TBI (1000baseX) ports. There 46 * are three supported methods for data transfer between host and 47 * NIC: programmed I/O, traditional scatter/gather DMA and Packet 48 * Propulsion Technology (tm) DMA. The latter mechanism is a form 49 * of double buffer DMA where the packet data is copied to a 50 * pre-allocated DMA buffer who's physical address has been loaded 51 * into a table at device initialization time. The rationale is that 52 * the virtual to physical address translation needed for normal 53 * scatter/gather DMA is more expensive than the data copy needed 54 * for double buffering. This may be true in Windows NT and the like, 55 * but it isn't true for us, at least on the x86 arch. This driver 56 * uses the scatter/gather I/O method for both TX and RX. 57 * 58 * The LXT1001 only supports TCP/IP checksum offload on receive. 59 * Also, the VLAN tagging is done using a 16-entry table which allows 60 * the chip to perform hardware filtering based on VLAN tags. Sadly, 61 * our vlan support doesn't currently play well with this kind of 62 * hardware support. 63 * 64 * Special thanks to: 65 * - Jeff James at Intel, for arranging to have the LXT1001 manual 66 * released (at long last) 67 * - Beny Chen at D-Link, for actually sending it to me 68 * - Brad Short and Keith Alexis at SMC, for sending me sample 69 * SMC9462SX and SMC9462TX adapters for testing 70 * - Paul Saab at Y!, for not killing me (though it remains to be seen 71 * if in fact he did me much of a favor) 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/sockio.h> 77 #include <sys/mbuf.h> 78 #include <sys/malloc.h> 79 #include <sys/kernel.h> 80 #include <sys/module.h> 81 #include <sys/socket.h> 82 83 #include <net/if.h> 84 #include <net/if_var.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 #include <net/if_types.h> 90 91 #include <net/bpf.h> 92 93 #include <vm/vm.h> /* for vtophys */ 94 #include <vm/pmap.h> /* for vtophys */ 95 #include <machine/bus.h> 96 #include <machine/resource.h> 97 #include <sys/bus.h> 98 #include <sys/rman.h> 99 100 #include <dev/mii/mii.h> 101 #include <dev/mii/miivar.h> 102 103 #include <dev/pci/pcireg.h> 104 #include <dev/pci/pcivar.h> 105 106 #define LGE_USEIOSPACE 107 108 #include <dev/lge/if_lgereg.h> 109 110 /* "device miibus" required. See GENERIC if you get errors here. */ 111 #include "miibus_if.h" 112 113 /* 114 * Various supported device vendors/types and their names. 115 */ 116 static const struct lge_type lge_devs[] = { 117 { LGE_VENDORID, LGE_DEVICEID, "Level 1 Gigabit Ethernet" }, 118 { 0, 0, NULL } 119 }; 120 121 static int lge_probe(device_t); 122 static int lge_attach(device_t); 123 static int lge_detach(device_t); 124 125 static int lge_alloc_jumbo_mem(struct lge_softc *); 126 static void lge_free_jumbo_mem(struct lge_softc *); 127 static void *lge_jalloc(struct lge_softc *); 128 static void lge_jfree(struct mbuf *); 129 130 static int lge_newbuf(struct lge_softc *, struct lge_rx_desc *, struct mbuf *); 131 static int lge_encap(struct lge_softc *, struct mbuf *, u_int32_t *); 132 static void lge_rxeof(struct lge_softc *, int); 133 static void lge_rxeoc(struct lge_softc *); 134 static void lge_txeof(struct lge_softc *); 135 static void lge_intr(void *); 136 static void lge_tick(void *); 137 static void lge_start(struct ifnet *); 138 static void lge_start_locked(struct ifnet *); 139 static int lge_ioctl(struct ifnet *, u_long, caddr_t); 140 static void lge_init(void *); 141 static void lge_init_locked(struct lge_softc *); 142 static void lge_stop(struct lge_softc *); 143 static void lge_watchdog(struct lge_softc *); 144 static int lge_shutdown(device_t); 145 static int lge_ifmedia_upd(struct ifnet *); 146 static void lge_ifmedia_upd_locked(struct ifnet *); 147 static void lge_ifmedia_sts(struct ifnet *, struct ifmediareq *); 148 149 static void lge_eeprom_getword(struct lge_softc *, int, u_int16_t *); 150 static void lge_read_eeprom(struct lge_softc *, caddr_t, int, int, int); 151 152 static int lge_miibus_readreg(device_t, int, int); 153 static int lge_miibus_writereg(device_t, int, int, int); 154 static void lge_miibus_statchg(device_t); 155 156 static void lge_setmulti(struct lge_softc *); 157 static void lge_reset(struct lge_softc *); 158 static int lge_list_rx_init(struct lge_softc *); 159 static int lge_list_tx_init(struct lge_softc *); 160 161 #ifdef LGE_USEIOSPACE 162 #define LGE_RES SYS_RES_IOPORT 163 #define LGE_RID LGE_PCI_LOIO 164 #else 165 #define LGE_RES SYS_RES_MEMORY 166 #define LGE_RID LGE_PCI_LOMEM 167 #endif 168 169 static device_method_t lge_methods[] = { 170 /* Device interface */ 171 DEVMETHOD(device_probe, lge_probe), 172 DEVMETHOD(device_attach, lge_attach), 173 DEVMETHOD(device_detach, lge_detach), 174 DEVMETHOD(device_shutdown, lge_shutdown), 175 176 /* MII interface */ 177 DEVMETHOD(miibus_readreg, lge_miibus_readreg), 178 DEVMETHOD(miibus_writereg, lge_miibus_writereg), 179 DEVMETHOD(miibus_statchg, lge_miibus_statchg), 180 181 DEVMETHOD_END 182 }; 183 184 static driver_t lge_driver = { 185 "lge", 186 lge_methods, 187 sizeof(struct lge_softc) 188 }; 189 190 DRIVER_MODULE(lge, pci, lge_driver, 0, 0); 191 DRIVER_MODULE(miibus, lge, miibus_driver, 0, 0); 192 MODULE_DEPEND(lge, pci, 1, 1, 1); 193 MODULE_DEPEND(lge, ether, 1, 1, 1); 194 MODULE_DEPEND(lge, miibus, 1, 1, 1); 195 196 #define LGE_SETBIT(sc, reg, x) \ 197 CSR_WRITE_4(sc, reg, \ 198 CSR_READ_4(sc, reg) | (x)) 199 200 #define LGE_CLRBIT(sc, reg, x) \ 201 CSR_WRITE_4(sc, reg, \ 202 CSR_READ_4(sc, reg) & ~(x)) 203 204 #define SIO_SET(x) \ 205 CSR_WRITE_4(sc, LGE_MEAR, CSR_READ_4(sc, LGE_MEAR) | x) 206 207 #define SIO_CLR(x) \ 208 CSR_WRITE_4(sc, LGE_MEAR, CSR_READ_4(sc, LGE_MEAR) & ~x) 209 210 /* 211 * Read a word of data stored in the EEPROM at address 'addr.' 212 */ 213 static void 214 lge_eeprom_getword(sc, addr, dest) 215 struct lge_softc *sc; 216 int addr; 217 u_int16_t *dest; 218 { 219 int i; 220 u_int32_t val; 221 222 CSR_WRITE_4(sc, LGE_EECTL, LGE_EECTL_CMD_READ| 223 LGE_EECTL_SINGLEACCESS|((addr >> 1) << 8)); 224 225 for (i = 0; i < LGE_TIMEOUT; i++) 226 if (!(CSR_READ_4(sc, LGE_EECTL) & LGE_EECTL_CMD_READ)) 227 break; 228 229 if (i == LGE_TIMEOUT) { 230 device_printf(sc->lge_dev, "EEPROM read timed out\n"); 231 return; 232 } 233 234 val = CSR_READ_4(sc, LGE_EEDATA); 235 236 if (addr & 1) 237 *dest = (val >> 16) & 0xFFFF; 238 else 239 *dest = val & 0xFFFF; 240 241 return; 242 } 243 244 /* 245 * Read a sequence of words from the EEPROM. 246 */ 247 static void 248 lge_read_eeprom(sc, dest, off, cnt, swap) 249 struct lge_softc *sc; 250 caddr_t dest; 251 int off; 252 int cnt; 253 int swap; 254 { 255 int i; 256 u_int16_t word = 0, *ptr; 257 258 for (i = 0; i < cnt; i++) { 259 lge_eeprom_getword(sc, off + i, &word); 260 ptr = (u_int16_t *)(dest + (i * 2)); 261 if (swap) 262 *ptr = ntohs(word); 263 else 264 *ptr = word; 265 } 266 267 return; 268 } 269 270 static int 271 lge_miibus_readreg(dev, phy, reg) 272 device_t dev; 273 int phy, reg; 274 { 275 struct lge_softc *sc; 276 int i; 277 278 sc = device_get_softc(dev); 279 280 /* 281 * If we have a non-PCS PHY, pretend that the internal 282 * autoneg stuff at PHY address 0 isn't there so that 283 * the miibus code will find only the GMII PHY. 284 */ 285 if (sc->lge_pcs == 0 && phy == 0) 286 return(0); 287 288 CSR_WRITE_4(sc, LGE_GMIICTL, (phy << 8) | reg | LGE_GMIICMD_READ); 289 290 for (i = 0; i < LGE_TIMEOUT; i++) 291 if (!(CSR_READ_4(sc, LGE_GMIICTL) & LGE_GMIICTL_CMDBUSY)) 292 break; 293 294 if (i == LGE_TIMEOUT) { 295 device_printf(sc->lge_dev, "PHY read timed out\n"); 296 return(0); 297 } 298 299 return(CSR_READ_4(sc, LGE_GMIICTL) >> 16); 300 } 301 302 static int 303 lge_miibus_writereg(dev, phy, reg, data) 304 device_t dev; 305 int phy, reg, data; 306 { 307 struct lge_softc *sc; 308 int i; 309 310 sc = device_get_softc(dev); 311 312 CSR_WRITE_4(sc, LGE_GMIICTL, 313 (data << 16) | (phy << 8) | reg | LGE_GMIICMD_WRITE); 314 315 for (i = 0; i < LGE_TIMEOUT; i++) 316 if (!(CSR_READ_4(sc, LGE_GMIICTL) & LGE_GMIICTL_CMDBUSY)) 317 break; 318 319 if (i == LGE_TIMEOUT) { 320 device_printf(sc->lge_dev, "PHY write timed out\n"); 321 return(0); 322 } 323 324 return(0); 325 } 326 327 static void 328 lge_miibus_statchg(dev) 329 device_t dev; 330 { 331 struct lge_softc *sc; 332 struct mii_data *mii; 333 334 sc = device_get_softc(dev); 335 mii = device_get_softc(sc->lge_miibus); 336 337 LGE_CLRBIT(sc, LGE_GMIIMODE, LGE_GMIIMODE_SPEED); 338 switch (IFM_SUBTYPE(mii->mii_media_active)) { 339 case IFM_1000_T: 340 case IFM_1000_SX: 341 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_1000); 342 break; 343 case IFM_100_TX: 344 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_100); 345 break; 346 case IFM_10_T: 347 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_10); 348 break; 349 default: 350 /* 351 * Choose something, even if it's wrong. Clearing 352 * all the bits will hose autoneg on the internal 353 * PHY. 354 */ 355 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_SPEED_1000); 356 break; 357 } 358 359 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 360 LGE_SETBIT(sc, LGE_GMIIMODE, LGE_GMIIMODE_FDX); 361 } else { 362 LGE_CLRBIT(sc, LGE_GMIIMODE, LGE_GMIIMODE_FDX); 363 } 364 365 return; 366 } 367 368 static u_int 369 lge_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int count) 370 { 371 uint32_t h, *hashes = arg; 372 373 h = ether_crc32_be(LLADDR(sdl), ETHER_ADDR_LEN) >> 26; 374 if (h < 32) 375 hashes[0] |= (1 << h); 376 else 377 hashes[1] |= (1 << (h - 32)); 378 return (1); 379 } 380 381 static void 382 lge_setmulti(sc) 383 struct lge_softc *sc; 384 { 385 struct ifnet *ifp; 386 uint32_t hashes[2] = { 0, 0 }; 387 388 ifp = sc->lge_ifp; 389 LGE_LOCK_ASSERT(sc); 390 391 /* Make sure multicast hash table is enabled. */ 392 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_MCAST); 393 394 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 395 CSR_WRITE_4(sc, LGE_MAR0, 0xFFFFFFFF); 396 CSR_WRITE_4(sc, LGE_MAR1, 0xFFFFFFFF); 397 return; 398 } 399 400 /* first, zot all the existing hash bits */ 401 CSR_WRITE_4(sc, LGE_MAR0, 0); 402 CSR_WRITE_4(sc, LGE_MAR1, 0); 403 404 /* now program new ones */ 405 if_foreach_llmaddr(ifp, lge_hash_maddr, hashes); 406 407 CSR_WRITE_4(sc, LGE_MAR0, hashes[0]); 408 CSR_WRITE_4(sc, LGE_MAR1, hashes[1]); 409 410 return; 411 } 412 413 static void 414 lge_reset(sc) 415 struct lge_softc *sc; 416 { 417 int i; 418 419 LGE_SETBIT(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL0|LGE_MODE1_SOFTRST); 420 421 for (i = 0; i < LGE_TIMEOUT; i++) { 422 if (!(CSR_READ_4(sc, LGE_MODE1) & LGE_MODE1_SOFTRST)) 423 break; 424 } 425 426 if (i == LGE_TIMEOUT) 427 device_printf(sc->lge_dev, "reset never completed\n"); 428 429 /* Wait a little while for the chip to get its brains in order. */ 430 DELAY(1000); 431 432 return; 433 } 434 435 /* 436 * Probe for a Level 1 chip. Check the PCI vendor and device 437 * IDs against our list and return a device name if we find a match. 438 */ 439 static int 440 lge_probe(dev) 441 device_t dev; 442 { 443 const struct lge_type *t; 444 445 t = lge_devs; 446 447 while(t->lge_name != NULL) { 448 if ((pci_get_vendor(dev) == t->lge_vid) && 449 (pci_get_device(dev) == t->lge_did)) { 450 device_set_desc(dev, t->lge_name); 451 return(BUS_PROBE_DEFAULT); 452 } 453 t++; 454 } 455 456 return(ENXIO); 457 } 458 459 /* 460 * Attach the interface. Allocate softc structures, do ifmedia 461 * setup and ethernet/BPF attach. 462 */ 463 static int 464 lge_attach(dev) 465 device_t dev; 466 { 467 u_char eaddr[ETHER_ADDR_LEN]; 468 struct lge_softc *sc; 469 struct ifnet *ifp = NULL; 470 int error = 0, rid; 471 472 sc = device_get_softc(dev); 473 sc->lge_dev = dev; 474 475 mtx_init(&sc->lge_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 476 MTX_DEF); 477 callout_init_mtx(&sc->lge_stat_callout, &sc->lge_mtx, 0); 478 479 /* 480 * Map control/status registers. 481 */ 482 pci_enable_busmaster(dev); 483 484 rid = LGE_RID; 485 sc->lge_res = bus_alloc_resource_any(dev, LGE_RES, &rid, RF_ACTIVE); 486 487 if (sc->lge_res == NULL) { 488 device_printf(dev, "couldn't map ports/memory\n"); 489 error = ENXIO; 490 goto fail; 491 } 492 493 sc->lge_btag = rman_get_bustag(sc->lge_res); 494 sc->lge_bhandle = rman_get_bushandle(sc->lge_res); 495 496 /* Allocate interrupt */ 497 rid = 0; 498 sc->lge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 499 RF_SHAREABLE | RF_ACTIVE); 500 501 if (sc->lge_irq == NULL) { 502 device_printf(dev, "couldn't map interrupt\n"); 503 error = ENXIO; 504 goto fail; 505 } 506 507 /* Reset the adapter. */ 508 lge_reset(sc); 509 510 /* 511 * Get station address from the EEPROM. 512 */ 513 lge_read_eeprom(sc, (caddr_t)&eaddr[0], LGE_EE_NODEADDR_0, 1, 0); 514 lge_read_eeprom(sc, (caddr_t)&eaddr[2], LGE_EE_NODEADDR_1, 1, 0); 515 lge_read_eeprom(sc, (caddr_t)&eaddr[4], LGE_EE_NODEADDR_2, 1, 0); 516 517 sc->lge_ldata = contigmalloc(sizeof(struct lge_list_data), M_DEVBUF, 518 M_NOWAIT | M_ZERO, 0, 0xffffffff, PAGE_SIZE, 0); 519 520 if (sc->lge_ldata == NULL) { 521 device_printf(dev, "no memory for list buffers!\n"); 522 error = ENXIO; 523 goto fail; 524 } 525 526 /* Try to allocate memory for jumbo buffers. */ 527 if (lge_alloc_jumbo_mem(sc)) { 528 device_printf(dev, "jumbo buffer allocation failed\n"); 529 error = ENXIO; 530 goto fail; 531 } 532 533 ifp = sc->lge_ifp = if_alloc(IFT_ETHER); 534 if (ifp == NULL) { 535 device_printf(dev, "can not if_alloc()\n"); 536 error = ENOSPC; 537 goto fail; 538 } 539 ifp->if_softc = sc; 540 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 541 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 542 ifp->if_ioctl = lge_ioctl; 543 ifp->if_start = lge_start; 544 ifp->if_init = lge_init; 545 ifp->if_snd.ifq_maxlen = LGE_TX_LIST_CNT - 1; 546 ifp->if_capabilities = IFCAP_RXCSUM; 547 ifp->if_capenable = ifp->if_capabilities; 548 549 if (CSR_READ_4(sc, LGE_GMIIMODE) & LGE_GMIIMODE_PCSENH) 550 sc->lge_pcs = 1; 551 else 552 sc->lge_pcs = 0; 553 554 /* 555 * Do MII setup. 556 */ 557 error = mii_attach(dev, &sc->lge_miibus, ifp, lge_ifmedia_upd, 558 lge_ifmedia_sts, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0); 559 if (error != 0) { 560 device_printf(dev, "attaching PHYs failed\n"); 561 goto fail; 562 } 563 564 /* 565 * Call MI attach routine. 566 */ 567 ether_ifattach(ifp, eaddr); 568 569 error = bus_setup_intr(dev, sc->lge_irq, INTR_TYPE_NET | INTR_MPSAFE, 570 NULL, lge_intr, sc, &sc->lge_intrhand); 571 572 if (error) { 573 ether_ifdetach(ifp); 574 device_printf(dev, "couldn't set up irq\n"); 575 goto fail; 576 } 577 return (0); 578 579 fail: 580 lge_free_jumbo_mem(sc); 581 if (sc->lge_ldata) 582 contigfree(sc->lge_ldata, 583 sizeof(struct lge_list_data), M_DEVBUF); 584 if (ifp) 585 if_free(ifp); 586 if (sc->lge_irq) 587 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq); 588 if (sc->lge_res) 589 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 590 mtx_destroy(&sc->lge_mtx); 591 return(error); 592 } 593 594 static int 595 lge_detach(dev) 596 device_t dev; 597 { 598 struct lge_softc *sc; 599 struct ifnet *ifp; 600 601 sc = device_get_softc(dev); 602 ifp = sc->lge_ifp; 603 604 LGE_LOCK(sc); 605 lge_reset(sc); 606 lge_stop(sc); 607 LGE_UNLOCK(sc); 608 callout_drain(&sc->lge_stat_callout); 609 ether_ifdetach(ifp); 610 611 bus_generic_detach(dev); 612 device_delete_child(dev, sc->lge_miibus); 613 614 bus_teardown_intr(dev, sc->lge_irq, sc->lge_intrhand); 615 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq); 616 bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res); 617 618 contigfree(sc->lge_ldata, sizeof(struct lge_list_data), M_DEVBUF); 619 if_free(ifp); 620 lge_free_jumbo_mem(sc); 621 mtx_destroy(&sc->lge_mtx); 622 623 return(0); 624 } 625 626 /* 627 * Initialize the transmit descriptors. 628 */ 629 static int 630 lge_list_tx_init(sc) 631 struct lge_softc *sc; 632 { 633 struct lge_list_data *ld; 634 struct lge_ring_data *cd; 635 int i; 636 637 cd = &sc->lge_cdata; 638 ld = sc->lge_ldata; 639 for (i = 0; i < LGE_TX_LIST_CNT; i++) { 640 ld->lge_tx_list[i].lge_mbuf = NULL; 641 ld->lge_tx_list[i].lge_ctl = 0; 642 } 643 644 cd->lge_tx_prod = cd->lge_tx_cons = 0; 645 646 return(0); 647 } 648 649 650 /* 651 * Initialize the RX descriptors and allocate mbufs for them. Note that 652 * we arralge the descriptors in a closed ring, so that the last descriptor 653 * points back to the first. 654 */ 655 static int 656 lge_list_rx_init(sc) 657 struct lge_softc *sc; 658 { 659 struct lge_list_data *ld; 660 struct lge_ring_data *cd; 661 int i; 662 663 ld = sc->lge_ldata; 664 cd = &sc->lge_cdata; 665 666 cd->lge_rx_prod = cd->lge_rx_cons = 0; 667 668 CSR_WRITE_4(sc, LGE_RXDESC_ADDR_HI, 0); 669 670 for (i = 0; i < LGE_RX_LIST_CNT; i++) { 671 if (CSR_READ_1(sc, LGE_RXCMDFREE_8BIT) == 0) 672 break; 673 if (lge_newbuf(sc, &ld->lge_rx_list[i], NULL) == ENOBUFS) 674 return(ENOBUFS); 675 } 676 677 /* Clear possible 'rx command queue empty' interrupt. */ 678 CSR_READ_4(sc, LGE_ISR); 679 680 return(0); 681 } 682 683 /* 684 * Initialize an RX descriptor and attach an MBUF cluster. 685 */ 686 static int 687 lge_newbuf(sc, c, m) 688 struct lge_softc *sc; 689 struct lge_rx_desc *c; 690 struct mbuf *m; 691 { 692 struct mbuf *m_new = NULL; 693 char *buf = NULL; 694 695 if (m == NULL) { 696 MGETHDR(m_new, M_NOWAIT, MT_DATA); 697 if (m_new == NULL) { 698 device_printf(sc->lge_dev, "no memory for rx list " 699 "-- packet dropped!\n"); 700 return(ENOBUFS); 701 } 702 703 /* Allocate the jumbo buffer */ 704 buf = lge_jalloc(sc); 705 if (buf == NULL) { 706 #ifdef LGE_VERBOSE 707 device_printf(sc->lge_dev, "jumbo allocation failed " 708 "-- packet dropped!\n"); 709 #endif 710 m_freem(m_new); 711 return(ENOBUFS); 712 } 713 /* Attach the buffer to the mbuf */ 714 m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN; 715 m_extadd(m_new, buf, LGE_JUMBO_FRAMELEN, lge_jfree, sc, NULL, 716 0, EXT_NET_DRV); 717 } else { 718 m_new = m; 719 m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN; 720 m_new->m_data = m_new->m_ext.ext_buf; 721 } 722 723 /* 724 * Adjust alignment so packet payload begins on a 725 * longword boundary. Mandatory for Alpha, useful on 726 * x86 too. 727 */ 728 m_adj(m_new, ETHER_ALIGN); 729 730 c->lge_mbuf = m_new; 731 c->lge_fragptr_hi = 0; 732 c->lge_fragptr_lo = vtophys(mtod(m_new, caddr_t)); 733 c->lge_fraglen = m_new->m_len; 734 c->lge_ctl = m_new->m_len | LGE_RXCTL_WANTINTR | LGE_FRAGCNT(1); 735 c->lge_sts = 0; 736 737 /* 738 * Put this buffer in the RX command FIFO. To do this, 739 * we just write the physical address of the descriptor 740 * into the RX descriptor address registers. Note that 741 * there are two registers, one high DWORD and one low 742 * DWORD, which lets us specify a 64-bit address if 743 * desired. We only use a 32-bit address for now. 744 * Writing to the low DWORD register is what actually 745 * causes the command to be issued, so we do that 746 * last. 747 */ 748 CSR_WRITE_4(sc, LGE_RXDESC_ADDR_LO, vtophys(c)); 749 LGE_INC(sc->lge_cdata.lge_rx_prod, LGE_RX_LIST_CNT); 750 751 return(0); 752 } 753 754 static int 755 lge_alloc_jumbo_mem(sc) 756 struct lge_softc *sc; 757 { 758 caddr_t ptr; 759 int i; 760 struct lge_jpool_entry *entry; 761 762 /* Grab a big chunk o' storage. */ 763 sc->lge_cdata.lge_jumbo_buf = contigmalloc(LGE_JMEM, M_DEVBUF, 764 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 765 766 if (sc->lge_cdata.lge_jumbo_buf == NULL) { 767 device_printf(sc->lge_dev, "no memory for jumbo buffers!\n"); 768 return(ENOBUFS); 769 } 770 771 SLIST_INIT(&sc->lge_jfree_listhead); 772 SLIST_INIT(&sc->lge_jinuse_listhead); 773 774 /* 775 * Now divide it up into 9K pieces and save the addresses 776 * in an array. 777 */ 778 ptr = sc->lge_cdata.lge_jumbo_buf; 779 for (i = 0; i < LGE_JSLOTS; i++) { 780 sc->lge_cdata.lge_jslots[i] = ptr; 781 ptr += LGE_JLEN; 782 entry = malloc(sizeof(struct lge_jpool_entry), 783 M_DEVBUF, M_NOWAIT); 784 if (entry == NULL) { 785 device_printf(sc->lge_dev, "no memory for jumbo " 786 "buffer queue!\n"); 787 return(ENOBUFS); 788 } 789 entry->slot = i; 790 SLIST_INSERT_HEAD(&sc->lge_jfree_listhead, 791 entry, jpool_entries); 792 } 793 794 return(0); 795 } 796 797 static void 798 lge_free_jumbo_mem(sc) 799 struct lge_softc *sc; 800 { 801 struct lge_jpool_entry *entry; 802 803 if (sc->lge_cdata.lge_jumbo_buf == NULL) 804 return; 805 806 while ((entry = SLIST_FIRST(&sc->lge_jinuse_listhead))) { 807 device_printf(sc->lge_dev, 808 "asked to free buffer that is in use!\n"); 809 SLIST_REMOVE_HEAD(&sc->lge_jinuse_listhead, jpool_entries); 810 SLIST_INSERT_HEAD(&sc->lge_jfree_listhead, entry, 811 jpool_entries); 812 } 813 while (!SLIST_EMPTY(&sc->lge_jfree_listhead)) { 814 entry = SLIST_FIRST(&sc->lge_jfree_listhead); 815 SLIST_REMOVE_HEAD(&sc->lge_jfree_listhead, jpool_entries); 816 free(entry, M_DEVBUF); 817 } 818 819 contigfree(sc->lge_cdata.lge_jumbo_buf, LGE_JMEM, M_DEVBUF); 820 821 return; 822 } 823 824 /* 825 * Allocate a jumbo buffer. 826 */ 827 static void * 828 lge_jalloc(sc) 829 struct lge_softc *sc; 830 { 831 struct lge_jpool_entry *entry; 832 833 entry = SLIST_FIRST(&sc->lge_jfree_listhead); 834 835 if (entry == NULL) { 836 #ifdef LGE_VERBOSE 837 device_printf(sc->lge_dev, "no free jumbo buffers\n"); 838 #endif 839 return(NULL); 840 } 841 842 SLIST_REMOVE_HEAD(&sc->lge_jfree_listhead, jpool_entries); 843 SLIST_INSERT_HEAD(&sc->lge_jinuse_listhead, entry, jpool_entries); 844 return(sc->lge_cdata.lge_jslots[entry->slot]); 845 } 846 847 /* 848 * Release a jumbo buffer. 849 */ 850 static void 851 lge_jfree(struct mbuf *m) 852 { 853 struct lge_softc *sc; 854 int i; 855 struct lge_jpool_entry *entry; 856 857 /* Extract the softc struct pointer. */ 858 sc = m->m_ext.ext_arg1; 859 860 if (sc == NULL) 861 panic("lge_jfree: can't find softc pointer!"); 862 863 /* calculate the slot this buffer belongs to */ 864 i = ((vm_offset_t)m->m_ext.ext_buf 865 - (vm_offset_t)sc->lge_cdata.lge_jumbo_buf) / LGE_JLEN; 866 867 if ((i < 0) || (i >= LGE_JSLOTS)) 868 panic("lge_jfree: asked to free buffer that we don't manage!"); 869 870 entry = SLIST_FIRST(&sc->lge_jinuse_listhead); 871 if (entry == NULL) 872 panic("lge_jfree: buffer not in use!"); 873 entry->slot = i; 874 SLIST_REMOVE_HEAD(&sc->lge_jinuse_listhead, jpool_entries); 875 SLIST_INSERT_HEAD(&sc->lge_jfree_listhead, entry, jpool_entries); 876 } 877 878 /* 879 * A frame has been uploaded: pass the resulting mbuf chain up to 880 * the higher level protocols. 881 */ 882 static void 883 lge_rxeof(sc, cnt) 884 struct lge_softc *sc; 885 int cnt; 886 { 887 struct mbuf *m; 888 struct ifnet *ifp; 889 struct lge_rx_desc *cur_rx; 890 int c, i, total_len = 0; 891 u_int32_t rxsts, rxctl; 892 893 ifp = sc->lge_ifp; 894 895 /* Find out how many frames were processed. */ 896 c = cnt; 897 i = sc->lge_cdata.lge_rx_cons; 898 899 /* Suck them in. */ 900 while(c) { 901 struct mbuf *m0 = NULL; 902 903 cur_rx = &sc->lge_ldata->lge_rx_list[i]; 904 rxctl = cur_rx->lge_ctl; 905 rxsts = cur_rx->lge_sts; 906 m = cur_rx->lge_mbuf; 907 cur_rx->lge_mbuf = NULL; 908 total_len = LGE_RXBYTES(cur_rx); 909 LGE_INC(i, LGE_RX_LIST_CNT); 910 c--; 911 912 /* 913 * If an error occurs, update stats, clear the 914 * status word and leave the mbuf cluster in place: 915 * it should simply get re-used next time this descriptor 916 * comes up in the ring. 917 */ 918 if (rxctl & LGE_RXCTL_ERRMASK) { 919 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 920 lge_newbuf(sc, &LGE_RXTAIL(sc), m); 921 continue; 922 } 923 924 if (lge_newbuf(sc, &LGE_RXTAIL(sc), NULL) == ENOBUFS) { 925 m0 = m_devget(mtod(m, char *), total_len, ETHER_ALIGN, 926 ifp, NULL); 927 lge_newbuf(sc, &LGE_RXTAIL(sc), m); 928 if (m0 == NULL) { 929 device_printf(sc->lge_dev, "no receive buffers " 930 "available -- packet dropped!\n"); 931 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 932 continue; 933 } 934 m = m0; 935 } else { 936 m->m_pkthdr.rcvif = ifp; 937 m->m_pkthdr.len = m->m_len = total_len; 938 } 939 940 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 941 942 /* Do IP checksum checking. */ 943 if (rxsts & LGE_RXSTS_ISIP) 944 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 945 if (!(rxsts & LGE_RXSTS_IPCSUMERR)) 946 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 947 if ((rxsts & LGE_RXSTS_ISTCP && 948 !(rxsts & LGE_RXSTS_TCPCSUMERR)) || 949 (rxsts & LGE_RXSTS_ISUDP && 950 !(rxsts & LGE_RXSTS_UDPCSUMERR))) { 951 m->m_pkthdr.csum_flags |= 952 CSUM_DATA_VALID|CSUM_PSEUDO_HDR; 953 m->m_pkthdr.csum_data = 0xffff; 954 } 955 956 LGE_UNLOCK(sc); 957 (*ifp->if_input)(ifp, m); 958 LGE_LOCK(sc); 959 } 960 961 sc->lge_cdata.lge_rx_cons = i; 962 963 return; 964 } 965 966 static void 967 lge_rxeoc(sc) 968 struct lge_softc *sc; 969 { 970 struct ifnet *ifp; 971 972 ifp = sc->lge_ifp; 973 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 974 lge_init_locked(sc); 975 return; 976 } 977 978 /* 979 * A frame was downloaded to the chip. It's safe for us to clean up 980 * the list buffers. 981 */ 982 983 static void 984 lge_txeof(sc) 985 struct lge_softc *sc; 986 { 987 struct lge_tx_desc *cur_tx = NULL; 988 struct ifnet *ifp; 989 u_int32_t idx, txdone; 990 991 ifp = sc->lge_ifp; 992 993 /* Clear the timeout timer. */ 994 sc->lge_timer = 0; 995 996 /* 997 * Go through our tx list and free mbufs for those 998 * frames that have been transmitted. 999 */ 1000 idx = sc->lge_cdata.lge_tx_cons; 1001 txdone = CSR_READ_1(sc, LGE_TXDMADONE_8BIT); 1002 1003 while (idx != sc->lge_cdata.lge_tx_prod && txdone) { 1004 cur_tx = &sc->lge_ldata->lge_tx_list[idx]; 1005 1006 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1007 if (cur_tx->lge_mbuf != NULL) { 1008 m_freem(cur_tx->lge_mbuf); 1009 cur_tx->lge_mbuf = NULL; 1010 } 1011 cur_tx->lge_ctl = 0; 1012 1013 txdone--; 1014 LGE_INC(idx, LGE_TX_LIST_CNT); 1015 sc->lge_timer = 0; 1016 } 1017 1018 sc->lge_cdata.lge_tx_cons = idx; 1019 1020 if (cur_tx != NULL) 1021 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1022 1023 return; 1024 } 1025 1026 static void 1027 lge_tick(xsc) 1028 void *xsc; 1029 { 1030 struct lge_softc *sc; 1031 struct mii_data *mii; 1032 struct ifnet *ifp; 1033 1034 sc = xsc; 1035 ifp = sc->lge_ifp; 1036 LGE_LOCK_ASSERT(sc); 1037 1038 CSR_WRITE_4(sc, LGE_STATSIDX, LGE_STATS_SINGLE_COLL_PKTS); 1039 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, CSR_READ_4(sc, LGE_STATSVAL)); 1040 CSR_WRITE_4(sc, LGE_STATSIDX, LGE_STATS_MULTI_COLL_PKTS); 1041 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, CSR_READ_4(sc, LGE_STATSVAL)); 1042 1043 if (!sc->lge_link) { 1044 mii = device_get_softc(sc->lge_miibus); 1045 mii_tick(mii); 1046 if (mii->mii_media_status & IFM_ACTIVE && 1047 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 1048 sc->lge_link++; 1049 if (bootverbose && 1050 (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX|| 1051 IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T)) 1052 device_printf(sc->lge_dev, "gigabit link up\n"); 1053 if (ifp->if_snd.ifq_head != NULL) 1054 lge_start_locked(ifp); 1055 } 1056 } 1057 1058 if (sc->lge_timer != 0 && --sc->lge_timer == 0) 1059 lge_watchdog(sc); 1060 callout_reset(&sc->lge_stat_callout, hz, lge_tick, sc); 1061 1062 return; 1063 } 1064 1065 static void 1066 lge_intr(arg) 1067 void *arg; 1068 { 1069 struct lge_softc *sc; 1070 struct ifnet *ifp; 1071 u_int32_t status; 1072 1073 sc = arg; 1074 ifp = sc->lge_ifp; 1075 LGE_LOCK(sc); 1076 1077 /* Suppress unwanted interrupts */ 1078 if (!(ifp->if_flags & IFF_UP)) { 1079 lge_stop(sc); 1080 LGE_UNLOCK(sc); 1081 return; 1082 } 1083 1084 for (;;) { 1085 /* 1086 * Reading the ISR register clears all interrupts, and 1087 * clears the 'interrupts enabled' bit in the IMR 1088 * register. 1089 */ 1090 status = CSR_READ_4(sc, LGE_ISR); 1091 1092 if ((status & LGE_INTRS) == 0) 1093 break; 1094 1095 if ((status & (LGE_ISR_TXCMDFIFO_EMPTY|LGE_ISR_TXDMA_DONE))) 1096 lge_txeof(sc); 1097 1098 if (status & LGE_ISR_RXDMA_DONE) 1099 lge_rxeof(sc, LGE_RX_DMACNT(status)); 1100 1101 if (status & LGE_ISR_RXCMDFIFO_EMPTY) 1102 lge_rxeoc(sc); 1103 1104 if (status & LGE_ISR_PHY_INTR) { 1105 sc->lge_link = 0; 1106 callout_stop(&sc->lge_stat_callout); 1107 lge_tick(sc); 1108 } 1109 } 1110 1111 /* Re-enable interrupts. */ 1112 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_SETRST_CTL0|LGE_IMR_INTR_ENB); 1113 1114 if (ifp->if_snd.ifq_head != NULL) 1115 lge_start_locked(ifp); 1116 1117 LGE_UNLOCK(sc); 1118 return; 1119 } 1120 1121 /* 1122 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1123 * pointers to the fragment pointers. 1124 */ 1125 static int 1126 lge_encap(sc, m_head, txidx) 1127 struct lge_softc *sc; 1128 struct mbuf *m_head; 1129 u_int32_t *txidx; 1130 { 1131 struct lge_frag *f = NULL; 1132 struct lge_tx_desc *cur_tx; 1133 struct mbuf *m; 1134 int frag = 0, tot_len = 0; 1135 1136 /* 1137 * Start packing the mbufs in this chain into 1138 * the fragment pointers. Stop when we run out 1139 * of fragments or hit the end of the mbuf chain. 1140 */ 1141 m = m_head; 1142 cur_tx = &sc->lge_ldata->lge_tx_list[*txidx]; 1143 frag = 0; 1144 1145 for (m = m_head; m != NULL; m = m->m_next) { 1146 if (m->m_len != 0) { 1147 tot_len += m->m_len; 1148 f = &cur_tx->lge_frags[frag]; 1149 f->lge_fraglen = m->m_len; 1150 f->lge_fragptr_lo = vtophys(mtod(m, vm_offset_t)); 1151 f->lge_fragptr_hi = 0; 1152 frag++; 1153 } 1154 } 1155 1156 if (m != NULL) 1157 return(ENOBUFS); 1158 1159 cur_tx->lge_mbuf = m_head; 1160 cur_tx->lge_ctl = LGE_TXCTL_WANTINTR|LGE_FRAGCNT(frag)|tot_len; 1161 LGE_INC((*txidx), LGE_TX_LIST_CNT); 1162 1163 /* Queue for transmit */ 1164 CSR_WRITE_4(sc, LGE_TXDESC_ADDR_LO, vtophys(cur_tx)); 1165 1166 return(0); 1167 } 1168 1169 /* 1170 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1171 * to the mbuf data regions directly in the transmit lists. We also save a 1172 * copy of the pointers since the transmit list fragment pointers are 1173 * physical addresses. 1174 */ 1175 1176 static void 1177 lge_start(ifp) 1178 struct ifnet *ifp; 1179 { 1180 struct lge_softc *sc; 1181 1182 sc = ifp->if_softc; 1183 LGE_LOCK(sc); 1184 lge_start_locked(ifp); 1185 LGE_UNLOCK(sc); 1186 } 1187 1188 static void 1189 lge_start_locked(ifp) 1190 struct ifnet *ifp; 1191 { 1192 struct lge_softc *sc; 1193 struct mbuf *m_head = NULL; 1194 u_int32_t idx; 1195 1196 sc = ifp->if_softc; 1197 1198 if (!sc->lge_link) 1199 return; 1200 1201 idx = sc->lge_cdata.lge_tx_prod; 1202 1203 if (ifp->if_drv_flags & IFF_DRV_OACTIVE) 1204 return; 1205 1206 while(sc->lge_ldata->lge_tx_list[idx].lge_mbuf == NULL) { 1207 if (CSR_READ_1(sc, LGE_TXCMDFREE_8BIT) == 0) 1208 break; 1209 1210 IF_DEQUEUE(&ifp->if_snd, m_head); 1211 if (m_head == NULL) 1212 break; 1213 1214 if (lge_encap(sc, m_head, &idx)) { 1215 IF_PREPEND(&ifp->if_snd, m_head); 1216 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1217 break; 1218 } 1219 1220 /* 1221 * If there's a BPF listener, bounce a copy of this frame 1222 * to him. 1223 */ 1224 BPF_MTAP(ifp, m_head); 1225 } 1226 1227 sc->lge_cdata.lge_tx_prod = idx; 1228 1229 /* 1230 * Set a timeout in case the chip goes out to lunch. 1231 */ 1232 sc->lge_timer = 5; 1233 1234 return; 1235 } 1236 1237 static void 1238 lge_init(xsc) 1239 void *xsc; 1240 { 1241 struct lge_softc *sc = xsc; 1242 1243 LGE_LOCK(sc); 1244 lge_init_locked(sc); 1245 LGE_UNLOCK(sc); 1246 } 1247 1248 static void 1249 lge_init_locked(sc) 1250 struct lge_softc *sc; 1251 { 1252 struct ifnet *ifp = sc->lge_ifp; 1253 1254 LGE_LOCK_ASSERT(sc); 1255 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1256 return; 1257 1258 /* 1259 * Cancel pending I/O and free all RX/TX buffers. 1260 */ 1261 lge_stop(sc); 1262 lge_reset(sc); 1263 1264 /* Set MAC address */ 1265 CSR_WRITE_4(sc, LGE_PAR0, *(u_int32_t *)(&IF_LLADDR(sc->lge_ifp)[0])); 1266 CSR_WRITE_4(sc, LGE_PAR1, *(u_int32_t *)(&IF_LLADDR(sc->lge_ifp)[4])); 1267 1268 /* Init circular RX list. */ 1269 if (lge_list_rx_init(sc) == ENOBUFS) { 1270 device_printf(sc->lge_dev, "initialization failed: no " 1271 "memory for rx buffers\n"); 1272 lge_stop(sc); 1273 return; 1274 } 1275 1276 /* 1277 * Init tx descriptors. 1278 */ 1279 lge_list_tx_init(sc); 1280 1281 /* Set initial value for MODE1 register. */ 1282 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_UCAST| 1283 LGE_MODE1_TX_CRC|LGE_MODE1_TXPAD| 1284 LGE_MODE1_RX_FLOWCTL|LGE_MODE1_SETRST_CTL0| 1285 LGE_MODE1_SETRST_CTL1|LGE_MODE1_SETRST_CTL2); 1286 1287 /* If we want promiscuous mode, set the allframes bit. */ 1288 if (ifp->if_flags & IFF_PROMISC) { 1289 CSR_WRITE_4(sc, LGE_MODE1, 1290 LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_PROMISC); 1291 } else { 1292 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_PROMISC); 1293 } 1294 1295 /* 1296 * Set the capture broadcast bit to capture broadcast frames. 1297 */ 1298 if (ifp->if_flags & IFF_BROADCAST) { 1299 CSR_WRITE_4(sc, LGE_MODE1, 1300 LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_BCAST); 1301 } else { 1302 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_BCAST); 1303 } 1304 1305 /* Packet padding workaround? */ 1306 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RMVPAD); 1307 1308 /* No error frames */ 1309 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_ERRPKTS); 1310 1311 /* Receive large frames */ 1312 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_GIANTS); 1313 1314 /* Workaround: disable RX/TX flow control */ 1315 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_TX_FLOWCTL); 1316 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_FLOWCTL); 1317 1318 /* Make sure to strip CRC from received frames */ 1319 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_CRC); 1320 1321 /* Turn off magic packet mode */ 1322 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_MPACK_ENB); 1323 1324 /* Turn off all VLAN stuff */ 1325 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_VLAN_RX|LGE_MODE1_VLAN_TX| 1326 LGE_MODE1_VLAN_STRIP|LGE_MODE1_VLAN_INSERT); 1327 1328 /* Workarond: FIFO overflow */ 1329 CSR_WRITE_2(sc, LGE_RXFIFO_HIWAT, 0x3FFF); 1330 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_SETRST_CTL1|LGE_IMR_RXFIFO_WAT); 1331 1332 /* 1333 * Load the multicast filter. 1334 */ 1335 lge_setmulti(sc); 1336 1337 /* 1338 * Enable hardware checksum validation for all received IPv4 1339 * packets, do not reject packets with bad checksums. 1340 */ 1341 CSR_WRITE_4(sc, LGE_MODE2, LGE_MODE2_RX_IPCSUM| 1342 LGE_MODE2_RX_TCPCSUM|LGE_MODE2_RX_UDPCSUM| 1343 LGE_MODE2_RX_ERRCSUM); 1344 1345 /* 1346 * Enable the delivery of PHY interrupts based on 1347 * link/speed/duplex status chalges. 1348 */ 1349 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL0|LGE_MODE1_GMIIPOLL); 1350 1351 /* Enable receiver and transmitter. */ 1352 CSR_WRITE_4(sc, LGE_RXDESC_ADDR_HI, 0); 1353 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_RX_ENB); 1354 1355 CSR_WRITE_4(sc, LGE_TXDESC_ADDR_HI, 0); 1356 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_SETRST_CTL1|LGE_MODE1_TX_ENB); 1357 1358 /* 1359 * Enable interrupts. 1360 */ 1361 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_SETRST_CTL0| 1362 LGE_IMR_SETRST_CTL1|LGE_IMR_INTR_ENB|LGE_INTRS); 1363 1364 lge_ifmedia_upd_locked(ifp); 1365 1366 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1367 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1368 1369 callout_reset(&sc->lge_stat_callout, hz, lge_tick, sc); 1370 1371 return; 1372 } 1373 1374 /* 1375 * Set media options. 1376 */ 1377 static int 1378 lge_ifmedia_upd(ifp) 1379 struct ifnet *ifp; 1380 { 1381 struct lge_softc *sc; 1382 1383 sc = ifp->if_softc; 1384 LGE_LOCK(sc); 1385 lge_ifmedia_upd_locked(ifp); 1386 LGE_UNLOCK(sc); 1387 1388 return(0); 1389 } 1390 1391 static void 1392 lge_ifmedia_upd_locked(ifp) 1393 struct ifnet *ifp; 1394 { 1395 struct lge_softc *sc; 1396 struct mii_data *mii; 1397 struct mii_softc *miisc; 1398 1399 sc = ifp->if_softc; 1400 1401 LGE_LOCK_ASSERT(sc); 1402 mii = device_get_softc(sc->lge_miibus); 1403 sc->lge_link = 0; 1404 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 1405 PHY_RESET(miisc); 1406 mii_mediachg(mii); 1407 } 1408 1409 /* 1410 * Report current media status. 1411 */ 1412 static void 1413 lge_ifmedia_sts(ifp, ifmr) 1414 struct ifnet *ifp; 1415 struct ifmediareq *ifmr; 1416 { 1417 struct lge_softc *sc; 1418 struct mii_data *mii; 1419 1420 sc = ifp->if_softc; 1421 1422 LGE_LOCK(sc); 1423 mii = device_get_softc(sc->lge_miibus); 1424 mii_pollstat(mii); 1425 ifmr->ifm_active = mii->mii_media_active; 1426 ifmr->ifm_status = mii->mii_media_status; 1427 LGE_UNLOCK(sc); 1428 1429 return; 1430 } 1431 1432 static int 1433 lge_ioctl(ifp, command, data) 1434 struct ifnet *ifp; 1435 u_long command; 1436 caddr_t data; 1437 { 1438 struct lge_softc *sc = ifp->if_softc; 1439 struct ifreq *ifr = (struct ifreq *) data; 1440 struct mii_data *mii; 1441 int error = 0; 1442 1443 switch(command) { 1444 case SIOCSIFMTU: 1445 LGE_LOCK(sc); 1446 if (ifr->ifr_mtu > LGE_JUMBO_MTU) 1447 error = EINVAL; 1448 else 1449 ifp->if_mtu = ifr->ifr_mtu; 1450 LGE_UNLOCK(sc); 1451 break; 1452 case SIOCSIFFLAGS: 1453 LGE_LOCK(sc); 1454 if (ifp->if_flags & IFF_UP) { 1455 if (ifp->if_drv_flags & IFF_DRV_RUNNING && 1456 ifp->if_flags & IFF_PROMISC && 1457 !(sc->lge_if_flags & IFF_PROMISC)) { 1458 CSR_WRITE_4(sc, LGE_MODE1, 1459 LGE_MODE1_SETRST_CTL1| 1460 LGE_MODE1_RX_PROMISC); 1461 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING && 1462 !(ifp->if_flags & IFF_PROMISC) && 1463 sc->lge_if_flags & IFF_PROMISC) { 1464 CSR_WRITE_4(sc, LGE_MODE1, 1465 LGE_MODE1_RX_PROMISC); 1466 } else { 1467 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1468 lge_init_locked(sc); 1469 } 1470 } else { 1471 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1472 lge_stop(sc); 1473 } 1474 sc->lge_if_flags = ifp->if_flags; 1475 LGE_UNLOCK(sc); 1476 error = 0; 1477 break; 1478 case SIOCADDMULTI: 1479 case SIOCDELMULTI: 1480 LGE_LOCK(sc); 1481 lge_setmulti(sc); 1482 LGE_UNLOCK(sc); 1483 error = 0; 1484 break; 1485 case SIOCGIFMEDIA: 1486 case SIOCSIFMEDIA: 1487 mii = device_get_softc(sc->lge_miibus); 1488 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 1489 break; 1490 default: 1491 error = ether_ioctl(ifp, command, data); 1492 break; 1493 } 1494 1495 return(error); 1496 } 1497 1498 static void 1499 lge_watchdog(sc) 1500 struct lge_softc *sc; 1501 { 1502 struct ifnet *ifp; 1503 1504 LGE_LOCK_ASSERT(sc); 1505 ifp = sc->lge_ifp; 1506 1507 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1508 if_printf(ifp, "watchdog timeout\n"); 1509 1510 lge_stop(sc); 1511 lge_reset(sc); 1512 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1513 lge_init_locked(sc); 1514 1515 if (ifp->if_snd.ifq_head != NULL) 1516 lge_start_locked(ifp); 1517 } 1518 1519 /* 1520 * Stop the adapter and free any mbufs allocated to the 1521 * RX and TX lists. 1522 */ 1523 static void 1524 lge_stop(sc) 1525 struct lge_softc *sc; 1526 { 1527 int i; 1528 struct ifnet *ifp; 1529 1530 LGE_LOCK_ASSERT(sc); 1531 ifp = sc->lge_ifp; 1532 sc->lge_timer = 0; 1533 callout_stop(&sc->lge_stat_callout); 1534 CSR_WRITE_4(sc, LGE_IMR, LGE_IMR_INTR_ENB); 1535 1536 /* Disable receiver and transmitter. */ 1537 CSR_WRITE_4(sc, LGE_MODE1, LGE_MODE1_RX_ENB|LGE_MODE1_TX_ENB); 1538 sc->lge_link = 0; 1539 1540 /* 1541 * Free data in the RX lists. 1542 */ 1543 for (i = 0; i < LGE_RX_LIST_CNT; i++) { 1544 if (sc->lge_ldata->lge_rx_list[i].lge_mbuf != NULL) { 1545 m_freem(sc->lge_ldata->lge_rx_list[i].lge_mbuf); 1546 sc->lge_ldata->lge_rx_list[i].lge_mbuf = NULL; 1547 } 1548 } 1549 bzero((char *)&sc->lge_ldata->lge_rx_list, 1550 sizeof(sc->lge_ldata->lge_rx_list)); 1551 1552 /* 1553 * Free the TX list buffers. 1554 */ 1555 for (i = 0; i < LGE_TX_LIST_CNT; i++) { 1556 if (sc->lge_ldata->lge_tx_list[i].lge_mbuf != NULL) { 1557 m_freem(sc->lge_ldata->lge_tx_list[i].lge_mbuf); 1558 sc->lge_ldata->lge_tx_list[i].lge_mbuf = NULL; 1559 } 1560 } 1561 1562 bzero((char *)&sc->lge_ldata->lge_tx_list, 1563 sizeof(sc->lge_ldata->lge_tx_list)); 1564 1565 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1566 1567 return; 1568 } 1569 1570 /* 1571 * Stop all chip I/O so that the kernel's probe routines don't 1572 * get confused by errant DMAs when rebooting. 1573 */ 1574 static int 1575 lge_shutdown(dev) 1576 device_t dev; 1577 { 1578 struct lge_softc *sc; 1579 1580 sc = device_get_softc(dev); 1581 1582 LGE_LOCK(sc); 1583 lge_reset(sc); 1584 lge_stop(sc); 1585 LGE_UNLOCK(sc); 1586 1587 return (0); 1588 } 1589