if_my.c revision 123289
1/*- 2 * Written by: yen_cw@myson.com.tw 3 * Copyright (c) 2002 Myson Technology Inc. 4 * 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 * without modification, immediately at the beginning of the file. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * Myson fast ethernet PCI NIC driver, available at: http://www.myson.com.tw/ 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: head/sys/dev/my/if_my.c 123289 2003-12-08 07:54:15Z obrien $"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/sockio.h> 36#include <sys/mbuf.h> 37#include <sys/malloc.h> 38#include <sys/kernel.h> 39#include <sys/socket.h> 40#include <sys/queue.h> 41#include <sys/types.h> 42#include <sys/bus.h> 43#include <sys/module.h> 44#include <sys/lock.h> 45#include <sys/mutex.h> 46 47#define NBPFILTER 1 48 49#include <net/if.h> 50#include <net/if_arp.h> 51#include <net/ethernet.h> 52#include <net/if_media.h> 53#include <net/if_dl.h> 54#include <net/bpf.h> 55 56#include <vm/vm.h> /* for vtophys */ 57#include <vm/pmap.h> /* for vtophys */ 58#include <machine/clock.h> /* for DELAY */ 59#include <machine/bus_memio.h> 60#include <machine/bus_pio.h> 61#include <machine/bus.h> 62#include <machine/resource.h> 63#include <sys/bus.h> 64#include <sys/rman.h> 65 66#include <dev/pci/pcireg.h> 67#include <dev/pci/pcivar.h> 68 69#include <dev/mii/mii.h> 70#include <dev/mii/miivar.h> 71 72#include "miibus_if.h" 73 74/* 75 * #define MY_USEIOSPACE 76 */ 77 78static int MY_USEIOSPACE = 1; 79 80#if (MY_USEIOSPACE) 81#define MY_RES SYS_RES_IOPORT 82#define MY_RID MY_PCI_LOIO 83#else 84#define MY_RES SYS_RES_MEMORY 85#define MY_RID MY_PCI_LOMEM 86#endif 87 88 89#include <dev/my/if_myreg.h> 90 91#ifndef lint 92static const char rcsid[] = 93"$Id: if_my.c,v 1.16 2003/04/15 06:37:25 mdodd Exp $"; 94#endif 95 96/* 97 * Various supported device vendors/types and their names. 98 */ 99struct my_type *my_info_tmp; 100static struct my_type my_devs[] = { 101 {MYSONVENDORID, MTD800ID, "Myson MTD80X Based Fast Ethernet Card"}, 102 {MYSONVENDORID, MTD803ID, "Myson MTD80X Based Fast Ethernet Card"}, 103 {MYSONVENDORID, MTD891ID, "Myson MTD89X Based Giga Ethernet Card"}, 104 {0, 0, NULL} 105}; 106 107/* 108 * Various supported PHY vendors/types and their names. Note that this driver 109 * will work with pretty much any MII-compliant PHY, so failure to positively 110 * identify the chip is not a fatal error. 111 */ 112static struct my_type my_phys[] = { 113 {MysonPHYID0, MysonPHYID0, "<MYSON MTD981>"}, 114 {SeeqPHYID0, SeeqPHYID0, "<SEEQ 80225>"}, 115 {AhdocPHYID0, AhdocPHYID0, "<AHDOC 101>"}, 116 {MarvellPHYID0, MarvellPHYID0, "<MARVELL 88E1000>"}, 117 {LevelOnePHYID0, LevelOnePHYID0, "<LevelOne LXT1000>"}, 118 {0, 0, "<MII-compliant physical interface>"} 119}; 120 121static int my_probe(device_t); 122static int my_attach(device_t); 123static int my_detach(device_t); 124static int my_newbuf(struct my_softc *, struct my_chain_onefrag *); 125static int my_encap(struct my_softc *, struct my_chain *, struct mbuf *); 126static void my_rxeof(struct my_softc *); 127static void my_txeof(struct my_softc *); 128static void my_txeoc(struct my_softc *); 129static void my_intr(void *); 130static void my_start(struct ifnet *); 131static int my_ioctl(struct ifnet *, u_long, caddr_t); 132static void my_init(void *); 133static void my_stop(struct my_softc *); 134static void my_watchdog(struct ifnet *); 135static void my_shutdown(device_t); 136static int my_ifmedia_upd(struct ifnet *); 137static void my_ifmedia_sts(struct ifnet *, struct ifmediareq *); 138static u_int16_t my_phy_readreg(struct my_softc *, int); 139static void my_phy_writereg(struct my_softc *, int, int); 140static void my_autoneg_xmit(struct my_softc *); 141static void my_autoneg_mii(struct my_softc *, int, int); 142static void my_setmode_mii(struct my_softc *, int); 143static void my_getmode_mii(struct my_softc *); 144static void my_setcfg(struct my_softc *, int); 145static uint32_t my_mchash(const uint8_t *); 146static void my_setmulti(struct my_softc *); 147static void my_reset(struct my_softc *); 148static int my_list_rx_init(struct my_softc *); 149static int my_list_tx_init(struct my_softc *); 150static long my_send_cmd_to_phy(struct my_softc *, int, int); 151 152#define MY_SETBIT(sc, reg, x) CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x)) 153#define MY_CLRBIT(sc, reg, x) CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x)) 154 155static device_method_t my_methods[] = { 156 /* Device interface */ 157 DEVMETHOD(device_probe, my_probe), 158 DEVMETHOD(device_attach, my_attach), 159 DEVMETHOD(device_detach, my_detach), 160 DEVMETHOD(device_shutdown, my_shutdown), 161 162 {0, 0} 163}; 164 165static driver_t my_driver = { 166 "my", 167 my_methods, 168 sizeof(struct my_softc) 169}; 170 171static devclass_t my_devclass; 172 173DRIVER_MODULE(my, pci, my_driver, my_devclass, 0, 0); 174MODULE_DEPEND(my, pci, 1, 1, 1); 175MODULE_DEPEND(my, ether, 1, 1, 1); 176 177static long 178my_send_cmd_to_phy(struct my_softc * sc, int opcode, int regad) 179{ 180 long miir; 181 int i; 182 int mask, data; 183 184 MY_LOCK(sc); 185 186 /* enable MII output */ 187 miir = CSR_READ_4(sc, MY_MANAGEMENT); 188 miir &= 0xfffffff0; 189 190 miir |= MY_MASK_MIIR_MII_WRITE + MY_MASK_MIIR_MII_MDO; 191 192 /* send 32 1's preamble */ 193 for (i = 0; i < 32; i++) { 194 /* low MDC; MDO is already high (miir) */ 195 miir &= ~MY_MASK_MIIR_MII_MDC; 196 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 197 198 /* high MDC */ 199 miir |= MY_MASK_MIIR_MII_MDC; 200 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 201 } 202 203 /* calculate ST+OP+PHYAD+REGAD+TA */ 204 data = opcode | (sc->my_phy_addr << 7) | (regad << 2); 205 206 /* sent out */ 207 mask = 0x8000; 208 while (mask) { 209 /* low MDC, prepare MDO */ 210 miir &= ~(MY_MASK_MIIR_MII_MDC + MY_MASK_MIIR_MII_MDO); 211 if (mask & data) 212 miir |= MY_MASK_MIIR_MII_MDO; 213 214 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 215 /* high MDC */ 216 miir |= MY_MASK_MIIR_MII_MDC; 217 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 218 DELAY(30); 219 220 /* next */ 221 mask >>= 1; 222 if (mask == 0x2 && opcode == MY_OP_READ) 223 miir &= ~MY_MASK_MIIR_MII_WRITE; 224 } 225 226 MY_UNLOCK(sc); 227 return miir; 228} 229 230 231static u_int16_t 232my_phy_readreg(struct my_softc * sc, int reg) 233{ 234 long miir; 235 int mask, data; 236 237 MY_LOCK(sc); 238 239 if (sc->my_info->my_did == MTD803ID) 240 data = CSR_READ_2(sc, MY_PHYBASE + reg * 2); 241 else { 242 miir = my_send_cmd_to_phy(sc, MY_OP_READ, reg); 243 244 /* read data */ 245 mask = 0x8000; 246 data = 0; 247 while (mask) { 248 /* low MDC */ 249 miir &= ~MY_MASK_MIIR_MII_MDC; 250 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 251 252 /* read MDI */ 253 miir = CSR_READ_4(sc, MY_MANAGEMENT); 254 if (miir & MY_MASK_MIIR_MII_MDI) 255 data |= mask; 256 257 /* high MDC, and wait */ 258 miir |= MY_MASK_MIIR_MII_MDC; 259 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 260 DELAY(30); 261 262 /* next */ 263 mask >>= 1; 264 } 265 266 /* low MDC */ 267 miir &= ~MY_MASK_MIIR_MII_MDC; 268 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 269 } 270 271 MY_UNLOCK(sc); 272 return (u_int16_t) data; 273} 274 275 276static void 277my_phy_writereg(struct my_softc * sc, int reg, int data) 278{ 279 long miir; 280 int mask; 281 282 MY_LOCK(sc); 283 284 if (sc->my_info->my_did == MTD803ID) 285 CSR_WRITE_2(sc, MY_PHYBASE + reg * 2, data); 286 else { 287 miir = my_send_cmd_to_phy(sc, MY_OP_WRITE, reg); 288 289 /* write data */ 290 mask = 0x8000; 291 while (mask) { 292 /* low MDC, prepare MDO */ 293 miir &= ~(MY_MASK_MIIR_MII_MDC + MY_MASK_MIIR_MII_MDO); 294 if (mask & data) 295 miir |= MY_MASK_MIIR_MII_MDO; 296 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 297 DELAY(1); 298 299 /* high MDC */ 300 miir |= MY_MASK_MIIR_MII_MDC; 301 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 302 DELAY(1); 303 304 /* next */ 305 mask >>= 1; 306 } 307 308 /* low MDC */ 309 miir &= ~MY_MASK_MIIR_MII_MDC; 310 CSR_WRITE_4(sc, MY_MANAGEMENT, miir); 311 } 312 MY_UNLOCK(sc); 313 return; 314} 315 316static uint32_t 317my_mchash(const uint8_t *addr) 318{ 319 uint32_t crc, carry; 320 int idx, bit; 321 uint8_t data; 322 323 /* Compute CRC for the address value. */ 324 crc = 0xFFFFFFFF; /* initial value */ 325 326 for (idx = 0; idx < 6; idx++) { 327 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) { 328 carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01); 329 crc <<= 1; 330 if (carry) 331 crc = (crc ^ 0x04c11db6) | carry; 332 } 333 } 334 335 /* 336 * return the filter bit position Note: I arrived at the following 337 * nonsense through experimentation. It's not the usual way to 338 * generate the bit position but it's the only thing I could come up 339 * with that works. 340 */ 341 return (~(crc >> 26) & 0x0000003F); 342} 343 344 345/* 346 * Program the 64-bit multicast hash filter. 347 */ 348static void 349my_setmulti(struct my_softc * sc) 350{ 351 struct ifnet *ifp; 352 int h = 0; 353 u_int32_t hashes[2] = {0, 0}; 354 struct ifmultiaddr *ifma; 355 u_int32_t rxfilt; 356 int mcnt = 0; 357 358 MY_LOCK(sc); 359 360 ifp = &sc->arpcom.ac_if; 361 362 rxfilt = CSR_READ_4(sc, MY_TCRRCR); 363 364 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 365 rxfilt |= MY_AM; 366 CSR_WRITE_4(sc, MY_TCRRCR, rxfilt); 367 CSR_WRITE_4(sc, MY_MAR0, 0xFFFFFFFF); 368 CSR_WRITE_4(sc, MY_MAR1, 0xFFFFFFFF); 369 370 MY_UNLOCK(sc); 371 372 return; 373 } 374 /* first, zot all the existing hash bits */ 375 CSR_WRITE_4(sc, MY_MAR0, 0); 376 CSR_WRITE_4(sc, MY_MAR1, 0); 377 378 /* now program new ones */ 379 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 380 if (ifma->ifma_addr->sa_family != AF_LINK) 381 continue; 382 h = my_mchash(LLADDR((struct sockaddr_dl *) ifma->ifma_addr)); 383 if (h < 32) 384 hashes[0] |= (1 << h); 385 else 386 hashes[1] |= (1 << (h - 32)); 387 mcnt++; 388 } 389 390 if (mcnt) 391 rxfilt |= MY_AM; 392 else 393 rxfilt &= ~MY_AM; 394 CSR_WRITE_4(sc, MY_MAR0, hashes[0]); 395 CSR_WRITE_4(sc, MY_MAR1, hashes[1]); 396 CSR_WRITE_4(sc, MY_TCRRCR, rxfilt); 397 MY_UNLOCK(sc); 398 return; 399} 400 401/* 402 * Initiate an autonegotiation session. 403 */ 404static void 405my_autoneg_xmit(struct my_softc * sc) 406{ 407 u_int16_t phy_sts = 0; 408 409 MY_LOCK(sc); 410 411 my_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); 412 DELAY(500); 413 while (my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_RESET); 414 415 phy_sts = my_phy_readreg(sc, PHY_BMCR); 416 phy_sts |= PHY_BMCR_AUTONEGENBL | PHY_BMCR_AUTONEGRSTR; 417 my_phy_writereg(sc, PHY_BMCR, phy_sts); 418 419 MY_UNLOCK(sc); 420 return; 421} 422 423 424/* 425 * Invoke autonegotiation on a PHY. 426 */ 427static void 428my_autoneg_mii(struct my_softc * sc, int flag, int verbose) 429{ 430 u_int16_t phy_sts = 0, media, advert, ability; 431 u_int16_t ability2 = 0; 432 struct ifnet *ifp; 433 struct ifmedia *ifm; 434 435 MY_LOCK(sc); 436 437 ifm = &sc->ifmedia; 438 ifp = &sc->arpcom.ac_if; 439 440 ifm->ifm_media = IFM_ETHER | IFM_AUTO; 441 442#ifndef FORCE_AUTONEG_TFOUR 443 /* 444 * First, see if autoneg is supported. If not, there's no point in 445 * continuing. 446 */ 447 phy_sts = my_phy_readreg(sc, PHY_BMSR); 448 if (!(phy_sts & PHY_BMSR_CANAUTONEG)) { 449 if (verbose) 450 printf("my%d: autonegotiation not supported\n", 451 sc->my_unit); 452 ifm->ifm_media = IFM_ETHER | IFM_10_T | IFM_HDX; 453 MY_UNLOCK(sc); 454 return; 455 } 456#endif 457 switch (flag) { 458 case MY_FLAG_FORCEDELAY: 459 /* 460 * XXX Never use this option anywhere but in the probe 461 * routine: making the kernel stop dead in its tracks for 462 * three whole seconds after we've gone multi-user is really 463 * bad manners. 464 */ 465 my_autoneg_xmit(sc); 466 DELAY(5000000); 467 break; 468 case MY_FLAG_SCHEDDELAY: 469 /* 470 * Wait for the transmitter to go idle before starting an 471 * autoneg session, otherwise my_start() may clobber our 472 * timeout, and we don't want to allow transmission during an 473 * autoneg session since that can screw it up. 474 */ 475 if (sc->my_cdata.my_tx_head != NULL) { 476 sc->my_want_auto = 1; 477 MY_UNLOCK(sc); 478 return; 479 } 480 my_autoneg_xmit(sc); 481 ifp->if_timer = 5; 482 sc->my_autoneg = 1; 483 sc->my_want_auto = 0; 484 MY_UNLOCK(sc); 485 return; 486 case MY_FLAG_DELAYTIMEO: 487 ifp->if_timer = 0; 488 sc->my_autoneg = 0; 489 break; 490 default: 491 printf("my%d: invalid autoneg flag: %d\n", sc->my_unit, flag); 492 MY_UNLOCK(sc); 493 return; 494 } 495 496 if (my_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_AUTONEGCOMP) { 497 if (verbose) 498 printf("my%d: autoneg complete, ", sc->my_unit); 499 phy_sts = my_phy_readreg(sc, PHY_BMSR); 500 } else { 501 if (verbose) 502 printf("my%d: autoneg not complete, ", sc->my_unit); 503 } 504 505 media = my_phy_readreg(sc, PHY_BMCR); 506 507 /* Link is good. Report modes and set duplex mode. */ 508 if (my_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT) { 509 if (verbose) 510 printf("my%d: link status good. ", sc->my_unit); 511 advert = my_phy_readreg(sc, PHY_ANAR); 512 ability = my_phy_readreg(sc, PHY_LPAR); 513 if ((sc->my_pinfo->my_vid == MarvellPHYID0) || 514 (sc->my_pinfo->my_vid == LevelOnePHYID0)) { 515 ability2 = my_phy_readreg(sc, PHY_1000SR); 516 if (ability2 & PHY_1000SR_1000BTXFULL) { 517 advert = 0; 518 ability = 0; 519 /* 520 * this version did not support 1000M, 521 * ifm->ifm_media = 522 * IFM_ETHER|IFM_1000_T|IFM_FDX; 523 */ 524 ifm->ifm_media = 525 IFM_ETHER | IFM_100_TX | IFM_FDX; 526 media &= ~PHY_BMCR_SPEEDSEL; 527 media |= PHY_BMCR_1000; 528 media |= PHY_BMCR_DUPLEX; 529 printf("(full-duplex, 1000Mbps)\n"); 530 } else if (ability2 & PHY_1000SR_1000BTXHALF) { 531 advert = 0; 532 ability = 0; 533 /* 534 * this version did not support 1000M, 535 * ifm->ifm_media = IFM_ETHER|IFM_1000_T; 536 */ 537 ifm->ifm_media = IFM_ETHER | IFM_100_TX; 538 media &= ~PHY_BMCR_SPEEDSEL; 539 media &= ~PHY_BMCR_DUPLEX; 540 media |= PHY_BMCR_1000; 541 printf("(half-duplex, 1000Mbps)\n"); 542 } 543 } 544 if (advert & PHY_ANAR_100BT4 && ability & PHY_ANAR_100BT4) { 545 ifm->ifm_media = IFM_ETHER | IFM_100_T4; 546 media |= PHY_BMCR_SPEEDSEL; 547 media &= ~PHY_BMCR_DUPLEX; 548 printf("(100baseT4)\n"); 549 } else if (advert & PHY_ANAR_100BTXFULL && 550 ability & PHY_ANAR_100BTXFULL) { 551 ifm->ifm_media = IFM_ETHER | IFM_100_TX | IFM_FDX; 552 media |= PHY_BMCR_SPEEDSEL; 553 media |= PHY_BMCR_DUPLEX; 554 printf("(full-duplex, 100Mbps)\n"); 555 } else if (advert & PHY_ANAR_100BTXHALF && 556 ability & PHY_ANAR_100BTXHALF) { 557 ifm->ifm_media = IFM_ETHER | IFM_100_TX | IFM_HDX; 558 media |= PHY_BMCR_SPEEDSEL; 559 media &= ~PHY_BMCR_DUPLEX; 560 printf("(half-duplex, 100Mbps)\n"); 561 } else if (advert & PHY_ANAR_10BTFULL && 562 ability & PHY_ANAR_10BTFULL) { 563 ifm->ifm_media = IFM_ETHER | IFM_10_T | IFM_FDX; 564 media &= ~PHY_BMCR_SPEEDSEL; 565 media |= PHY_BMCR_DUPLEX; 566 printf("(full-duplex, 10Mbps)\n"); 567 } else if (advert) { 568 ifm->ifm_media = IFM_ETHER | IFM_10_T | IFM_HDX; 569 media &= ~PHY_BMCR_SPEEDSEL; 570 media &= ~PHY_BMCR_DUPLEX; 571 printf("(half-duplex, 10Mbps)\n"); 572 } 573 media &= ~PHY_BMCR_AUTONEGENBL; 574 575 /* Set ASIC's duplex mode to match the PHY. */ 576 my_phy_writereg(sc, PHY_BMCR, media); 577 my_setcfg(sc, media); 578 } else { 579 if (verbose) 580 printf("my%d: no carrier\n", sc->my_unit); 581 } 582 583 my_init(sc); 584 if (sc->my_tx_pend) { 585 sc->my_autoneg = 0; 586 sc->my_tx_pend = 0; 587 my_start(ifp); 588 } 589 MY_UNLOCK(sc); 590 return; 591} 592 593/* 594 * To get PHY ability. 595 */ 596static void 597my_getmode_mii(struct my_softc * sc) 598{ 599 u_int16_t bmsr; 600 struct ifnet *ifp; 601 602 MY_LOCK(sc); 603 ifp = &sc->arpcom.ac_if; 604 bmsr = my_phy_readreg(sc, PHY_BMSR); 605 if (bootverbose) 606 printf("my%d: PHY status word: %x\n", sc->my_unit, bmsr); 607 608 /* fallback */ 609 sc->ifmedia.ifm_media = IFM_ETHER | IFM_10_T | IFM_HDX; 610 611 if (bmsr & PHY_BMSR_10BTHALF) { 612 if (bootverbose) 613 printf("my%d: 10Mbps half-duplex mode supported\n", 614 sc->my_unit); 615 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_10_T | IFM_HDX, 616 0, NULL); 617 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_10_T, 0, NULL); 618 } 619 if (bmsr & PHY_BMSR_10BTFULL) { 620 if (bootverbose) 621 printf("my%d: 10Mbps full-duplex mode supported\n", 622 sc->my_unit); 623 624 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_10_T | IFM_FDX, 625 0, NULL); 626 sc->ifmedia.ifm_media = IFM_ETHER | IFM_10_T | IFM_FDX; 627 } 628 if (bmsr & PHY_BMSR_100BTXHALF) { 629 if (bootverbose) 630 printf("my%d: 100Mbps half-duplex mode supported\n", 631 sc->my_unit); 632 ifp->if_baudrate = 100000000; 633 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_100_TX, 0, NULL); 634 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_100_TX | IFM_HDX, 635 0, NULL); 636 sc->ifmedia.ifm_media = IFM_ETHER | IFM_100_TX | IFM_HDX; 637 } 638 if (bmsr & PHY_BMSR_100BTXFULL) { 639 if (bootverbose) 640 printf("my%d: 100Mbps full-duplex mode supported\n", 641 sc->my_unit); 642 ifp->if_baudrate = 100000000; 643 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_100_TX | IFM_FDX, 644 0, NULL); 645 sc->ifmedia.ifm_media = IFM_ETHER | IFM_100_TX | IFM_FDX; 646 } 647 /* Some also support 100BaseT4. */ 648 if (bmsr & PHY_BMSR_100BT4) { 649 if (bootverbose) 650 printf("my%d: 100baseT4 mode supported\n", sc->my_unit); 651 ifp->if_baudrate = 100000000; 652 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_100_T4, 0, NULL); 653 sc->ifmedia.ifm_media = IFM_ETHER | IFM_100_T4; 654#ifdef FORCE_AUTONEG_TFOUR 655 if (bootverbose) 656 printf("my%d: forcing on autoneg support for BT4\n", 657 sc->my_unit); 658 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_AUTO, 0 NULL): 659 sc->ifmedia.ifm_media = IFM_ETHER | IFM_AUTO; 660#endif 661 } 662#if 0 /* this version did not support 1000M, */ 663 if (sc->my_pinfo->my_vid == MarvellPHYID0) { 664 if (bootverbose) 665 printf("my%d: 1000Mbps half-duplex mode supported\n", 666 sc->my_unit); 667 668 ifp->if_baudrate = 1000000000; 669 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_1000_T, 0, NULL); 670 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_1000_T | IFM_HDX, 671 0, NULL); 672 if (bootverbose) 673 printf("my%d: 1000Mbps full-duplex mode supported\n", 674 sc->my_unit); 675 ifp->if_baudrate = 1000000000; 676 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_1000_T | IFM_FDX, 677 0, NULL); 678 sc->ifmedia.ifm_media = IFM_ETHER | IFM_1000_T | IFM_FDX; 679 } 680#endif 681 if (bmsr & PHY_BMSR_CANAUTONEG) { 682 if (bootverbose) 683 printf("my%d: autoneg supported\n", sc->my_unit); 684 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL); 685 sc->ifmedia.ifm_media = IFM_ETHER | IFM_AUTO; 686 } 687 MY_UNLOCK(sc); 688 return; 689} 690 691/* 692 * Set speed and duplex mode. 693 */ 694static void 695my_setmode_mii(struct my_softc * sc, int media) 696{ 697 u_int16_t bmcr; 698 struct ifnet *ifp; 699 700 MY_LOCK(sc); 701 ifp = &sc->arpcom.ac_if; 702 /* 703 * If an autoneg session is in progress, stop it. 704 */ 705 if (sc->my_autoneg) { 706 printf("my%d: canceling autoneg session\n", sc->my_unit); 707 ifp->if_timer = sc->my_autoneg = sc->my_want_auto = 0; 708 bmcr = my_phy_readreg(sc, PHY_BMCR); 709 bmcr &= ~PHY_BMCR_AUTONEGENBL; 710 my_phy_writereg(sc, PHY_BMCR, bmcr); 711 } 712 printf("my%d: selecting MII, ", sc->my_unit); 713 bmcr = my_phy_readreg(sc, PHY_BMCR); 714 bmcr &= ~(PHY_BMCR_AUTONEGENBL | PHY_BMCR_SPEEDSEL | PHY_BMCR_1000 | 715 PHY_BMCR_DUPLEX | PHY_BMCR_LOOPBK); 716 717#if 0 /* this version did not support 1000M, */ 718 if (IFM_SUBTYPE(media) == IFM_1000_T) { 719 printf("1000Mbps/T4, half-duplex\n"); 720 bmcr &= ~PHY_BMCR_SPEEDSEL; 721 bmcr &= ~PHY_BMCR_DUPLEX; 722 bmcr |= PHY_BMCR_1000; 723 } 724#endif 725 if (IFM_SUBTYPE(media) == IFM_100_T4) { 726 printf("100Mbps/T4, half-duplex\n"); 727 bmcr |= PHY_BMCR_SPEEDSEL; 728 bmcr &= ~PHY_BMCR_DUPLEX; 729 } 730 if (IFM_SUBTYPE(media) == IFM_100_TX) { 731 printf("100Mbps, "); 732 bmcr |= PHY_BMCR_SPEEDSEL; 733 } 734 if (IFM_SUBTYPE(media) == IFM_10_T) { 735 printf("10Mbps, "); 736 bmcr &= ~PHY_BMCR_SPEEDSEL; 737 } 738 if ((media & IFM_GMASK) == IFM_FDX) { 739 printf("full duplex\n"); 740 bmcr |= PHY_BMCR_DUPLEX; 741 } else { 742 printf("half duplex\n"); 743 bmcr &= ~PHY_BMCR_DUPLEX; 744 } 745 my_phy_writereg(sc, PHY_BMCR, bmcr); 746 my_setcfg(sc, bmcr); 747 MY_UNLOCK(sc); 748 return; 749} 750 751/* 752 * The Myson manual states that in order to fiddle with the 'full-duplex' and 753 * '100Mbps' bits in the netconfig register, we first have to put the 754 * transmit and/or receive logic in the idle state. 755 */ 756static void 757my_setcfg(struct my_softc * sc, int bmcr) 758{ 759 int i, restart = 0; 760 761 MY_LOCK(sc); 762 if (CSR_READ_4(sc, MY_TCRRCR) & (MY_TE | MY_RE)) { 763 restart = 1; 764 MY_CLRBIT(sc, MY_TCRRCR, (MY_TE | MY_RE)); 765 for (i = 0; i < MY_TIMEOUT; i++) { 766 DELAY(10); 767 if (!(CSR_READ_4(sc, MY_TCRRCR) & 768 (MY_TXRUN | MY_RXRUN))) 769 break; 770 } 771 if (i == MY_TIMEOUT) 772 printf("my%d: failed to force tx and rx to idle \n", 773 sc->my_unit); 774 } 775 MY_CLRBIT(sc, MY_TCRRCR, MY_PS1000); 776 MY_CLRBIT(sc, MY_TCRRCR, MY_PS10); 777 if (bmcr & PHY_BMCR_1000) 778 MY_SETBIT(sc, MY_TCRRCR, MY_PS1000); 779 else if (!(bmcr & PHY_BMCR_SPEEDSEL)) 780 MY_SETBIT(sc, MY_TCRRCR, MY_PS10); 781 if (bmcr & PHY_BMCR_DUPLEX) 782 MY_SETBIT(sc, MY_TCRRCR, MY_FD); 783 else 784 MY_CLRBIT(sc, MY_TCRRCR, MY_FD); 785 if (restart) 786 MY_SETBIT(sc, MY_TCRRCR, MY_TE | MY_RE); 787 MY_UNLOCK(sc); 788 return; 789} 790 791static void 792my_reset(struct my_softc * sc) 793{ 794 register int i; 795 796 MY_LOCK(sc); 797 MY_SETBIT(sc, MY_BCR, MY_SWR); 798 for (i = 0; i < MY_TIMEOUT; i++) { 799 DELAY(10); 800 if (!(CSR_READ_4(sc, MY_BCR) & MY_SWR)) 801 break; 802 } 803 if (i == MY_TIMEOUT) 804 printf("m0x%d: reset never completed!\n", sc->my_unit); 805 806 /* Wait a little while for the chip to get its brains in order. */ 807 DELAY(1000); 808 MY_UNLOCK(sc); 809 return; 810} 811 812/* 813 * Probe for a Myson chip. Check the PCI vendor and device IDs against our 814 * list and return a device name if we find a match. 815 */ 816static int 817my_probe(device_t dev) 818{ 819 struct my_type *t; 820 821 t = my_devs; 822 while (t->my_name != NULL) { 823 if ((pci_get_vendor(dev) == t->my_vid) && 824 (pci_get_device(dev) == t->my_did)) { 825 device_set_desc(dev, t->my_name); 826 my_info_tmp = t; 827 return (0); 828 } 829 t++; 830 } 831 return (ENXIO); 832} 833 834/* 835 * Attach the interface. Allocate softc structures, do ifmedia setup and 836 * ethernet/BPF attach. 837 */ 838static int 839my_attach(device_t dev) 840{ 841 int s, i; 842 u_char eaddr[ETHER_ADDR_LEN]; 843 u_int32_t command, iobase; 844 struct my_softc *sc; 845 struct ifnet *ifp; 846 int media = IFM_ETHER | IFM_100_TX | IFM_FDX; 847 unsigned int round; 848 caddr_t roundptr; 849 struct my_type *p; 850 u_int16_t phy_vid, phy_did, phy_sts = 0; 851 int rid, unit, error = 0; 852 853 s = splimp(); 854 sc = device_get_softc(dev); 855 unit = device_get_unit(dev); 856 if (sc == NULL) { 857 printf("my%d: no memory for softc struct!\n", unit); 858 error = ENXIO; 859 goto fail; 860 861 } 862 bzero(sc, sizeof(struct my_softc)); 863 mtx_init(&sc->my_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 864 MTX_DEF | MTX_RECURSE); 865 MY_LOCK(sc); 866 867 /* 868 * Map control/status registers. 869 */ 870#if 0 871 command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); 872 command |= (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN); 873 pci_write_config(dev, PCI_COMMAND_STATUS_REG, command & 0x000000ff, 4); 874 command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); 875#endif 876 command = pci_read_config(dev, PCIR_COMMAND, 4); 877 command |= (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN); 878 pci_write_config(dev, PCIR_COMMAND, command & 0x000000ff, 4); 879 command = pci_read_config(dev, PCIR_COMMAND, 4); 880 881 if (my_info_tmp->my_did == MTD800ID) { 882 iobase = pci_read_config(dev, MY_PCI_LOIO, 4); 883 if (iobase & 0x300) 884 MY_USEIOSPACE = 0; 885 } 886 if (MY_USEIOSPACE) { 887 if (!(command & PCIM_CMD_PORTEN)) { 888 printf("my%d: failed to enable I/O ports!\n", unit); 889 free(sc, M_DEVBUF); 890 error = ENXIO; 891 goto fail; 892 } 893#if 0 894 if (!pci_map_port(config_id, MY_PCI_LOIO, (u_int16_t *) & (sc->my_bhandle))) { 895 printf("my%d: couldn't map ports\n", unit); 896 error = ENXIO; 897 goto fail; 898 } 899 900 sc->my_btag = I386_BUS_SPACE_IO; 901#endif 902 } else { 903 if (!(command & PCIM_CMD_MEMEN)) { 904 printf("my%d: failed to enable memory mapping!\n", 905 unit); 906 error = ENXIO; 907 goto fail; 908 } 909#if 0 910 if (!pci_map_mem(config_id, MY_PCI_LOMEM, &vbase, &pbase)) { 911 printf ("my%d: couldn't map memory\n", unit); 912 error = ENXIO; 913 goto fail; 914 } 915 sc->my_btag = I386_BUS_SPACE_MEM; 916 sc->my_bhandle = vbase; 917#endif 918 } 919 920 rid = MY_RID; 921 sc->my_res = bus_alloc_resource(dev, MY_RES, &rid, 922 0, ~0, 1, RF_ACTIVE); 923 924 if (sc->my_res == NULL) { 925 printf("my%d: couldn't map ports/memory\n", unit); 926 error = ENXIO; 927 goto fail; 928 } 929 sc->my_btag = rman_get_bustag(sc->my_res); 930 sc->my_bhandle = rman_get_bushandle(sc->my_res); 931 932 rid = 0; 933 sc->my_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 934 RF_SHAREABLE | RF_ACTIVE); 935 936 if (sc->my_irq == NULL) { 937 printf("my%d: couldn't map interrupt\n", unit); 938 bus_release_resource(dev, MY_RES, MY_RID, sc->my_res); 939 error = ENXIO; 940 goto fail; 941 } 942 error = bus_setup_intr(dev, sc->my_irq, INTR_TYPE_NET, 943 my_intr, sc, &sc->my_intrhand); 944 945 if (error) { 946 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->my_irq); 947 bus_release_resource(dev, MY_RES, MY_RID, sc->my_res); 948 printf("my%d: couldn't set up irq\n", unit); 949 goto fail; 950 } 951 callout_handle_init(&sc->my_stat_ch); 952 953 sc->my_info = my_info_tmp; 954 955 /* Reset the adapter. */ 956 my_reset(sc); 957 958 /* 959 * Get station address 960 */ 961 for (i = 0; i < ETHER_ADDR_LEN; ++i) 962 eaddr[i] = CSR_READ_1(sc, MY_PAR0 + i); 963 964 /* 965 * A Myson chip was detected. Inform the world. 966 */ 967 printf("my%d: Ethernet address: %6D\n", unit, eaddr, ":"); 968 969 sc->my_unit = unit; 970 bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 971 972 sc->my_ldata_ptr = malloc(sizeof(struct my_list_data) + 8, 973 M_DEVBUF, M_NOWAIT); 974 if (sc->my_ldata_ptr == NULL) { 975 free(sc, M_DEVBUF); 976 printf("my%d: no memory for list buffers!\n", unit); 977 error = ENXIO; 978 goto fail; 979 } 980 sc->my_ldata = (struct my_list_data *) sc->my_ldata_ptr; 981 round = (uintptr_t)sc->my_ldata_ptr & 0xF; 982 roundptr = sc->my_ldata_ptr; 983 for (i = 0; i < 8; i++) { 984 if (round % 8) { 985 round++; 986 roundptr++; 987 } else 988 break; 989 } 990 sc->my_ldata = (struct my_list_data *) roundptr; 991 bzero(sc->my_ldata, sizeof(struct my_list_data)); 992 993 ifp = &sc->arpcom.ac_if; 994 ifp->if_softc = sc; 995 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 996 ifp->if_mtu = ETHERMTU; 997 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 998 ifp->if_ioctl = my_ioctl; 999 ifp->if_output = ether_output; 1000 ifp->if_start = my_start; 1001 ifp->if_watchdog = my_watchdog; 1002 ifp->if_init = my_init; 1003 ifp->if_baudrate = 10000000; 1004 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 1005 1006 if (sc->my_info->my_did == MTD803ID) 1007 sc->my_pinfo = my_phys; 1008 else { 1009 if (bootverbose) 1010 printf("my%d: probing for a PHY\n", sc->my_unit); 1011 for (i = MY_PHYADDR_MIN; i < MY_PHYADDR_MAX + 1; i++) { 1012 if (bootverbose) 1013 printf("my%d: checking address: %d\n", 1014 sc->my_unit, i); 1015 sc->my_phy_addr = i; 1016 phy_sts = my_phy_readreg(sc, PHY_BMSR); 1017 if ((phy_sts != 0) && (phy_sts != 0xffff)) 1018 break; 1019 else 1020 phy_sts = 0; 1021 } 1022 if (phy_sts) { 1023 phy_vid = my_phy_readreg(sc, PHY_VENID); 1024 phy_did = my_phy_readreg(sc, PHY_DEVID); 1025 if (bootverbose) { 1026 printf("my%d: found PHY at address %d, ", 1027 sc->my_unit, sc->my_phy_addr); 1028 printf("vendor id: %x device id: %x\n", 1029 phy_vid, phy_did); 1030 } 1031 p = my_phys; 1032 while (p->my_vid) { 1033 if (phy_vid == p->my_vid) { 1034 sc->my_pinfo = p; 1035 break; 1036 } 1037 p++; 1038 } 1039 if (sc->my_pinfo == NULL) 1040 sc->my_pinfo = &my_phys[PHY_UNKNOWN]; 1041 if (bootverbose) 1042 printf("my%d: PHY type: %s\n", 1043 sc->my_unit, sc->my_pinfo->my_name); 1044 } else { 1045 printf("my%d: MII without any phy!\n", sc->my_unit); 1046 error = ENXIO; 1047 goto fail; 1048 } 1049 } 1050 1051 /* Do ifmedia setup. */ 1052 ifmedia_init(&sc->ifmedia, 0, my_ifmedia_upd, my_ifmedia_sts); 1053 my_getmode_mii(sc); 1054 my_autoneg_mii(sc, MY_FLAG_FORCEDELAY, 1); 1055 media = sc->ifmedia.ifm_media; 1056 my_stop(sc); 1057 ifmedia_set(&sc->ifmedia, media); 1058 1059 ether_ifattach(ifp, eaddr); 1060 1061#if 0 1062 at_shutdown(my_shutdown, sc, SHUTDOWN_POST_SYNC); 1063 shutdownhook_establish(my_shutdown, sc); 1064#endif 1065 1066 MY_UNLOCK(sc); 1067 return (0); 1068 1069fail: 1070 MY_UNLOCK(sc); 1071 mtx_destroy(&sc->my_mtx); 1072 splx(s); 1073 return (error); 1074} 1075 1076static int 1077my_detach(device_t dev) 1078{ 1079 struct my_softc *sc; 1080 struct ifnet *ifp; 1081 int s; 1082 1083 s = splimp(); 1084 sc = device_get_softc(dev); 1085 MY_LOCK(sc); 1086 ifp = &sc->arpcom.ac_if; 1087 ether_ifdetach(ifp); 1088 my_stop(sc); 1089 1090#if 0 1091 bus_generic_detach(dev); 1092 device_delete_child(dev, sc->rl_miibus); 1093#endif 1094 1095 bus_teardown_intr(dev, sc->my_irq, sc->my_intrhand); 1096 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->my_irq); 1097 bus_release_resource(dev, MY_RES, MY_RID, sc->my_res); 1098#if 0 1099 contigfree(sc->my_cdata.my_rx_buf, MY_RXBUFLEN + 32, M_DEVBUF); 1100#endif 1101 free(sc, M_DEVBUF); 1102 MY_UNLOCK(sc); 1103 splx(s); 1104 mtx_destroy(&sc->my_mtx); 1105 return (0); 1106} 1107 1108 1109/* 1110 * Initialize the transmit descriptors. 1111 */ 1112static int 1113my_list_tx_init(struct my_softc * sc) 1114{ 1115 struct my_chain_data *cd; 1116 struct my_list_data *ld; 1117 int i; 1118 1119 MY_LOCK(sc); 1120 cd = &sc->my_cdata; 1121 ld = sc->my_ldata; 1122 for (i = 0; i < MY_TX_LIST_CNT; i++) { 1123 cd->my_tx_chain[i].my_ptr = &ld->my_tx_list[i]; 1124 if (i == (MY_TX_LIST_CNT - 1)) 1125 cd->my_tx_chain[i].my_nextdesc = &cd->my_tx_chain[0]; 1126 else 1127 cd->my_tx_chain[i].my_nextdesc = 1128 &cd->my_tx_chain[i + 1]; 1129 } 1130 cd->my_tx_free = &cd->my_tx_chain[0]; 1131 cd->my_tx_tail = cd->my_tx_head = NULL; 1132 MY_UNLOCK(sc); 1133 return (0); 1134} 1135 1136/* 1137 * Initialize the RX descriptors and allocate mbufs for them. Note that we 1138 * arrange the descriptors in a closed ring, so that the last descriptor 1139 * points back to the first. 1140 */ 1141static int 1142my_list_rx_init(struct my_softc * sc) 1143{ 1144 struct my_chain_data *cd; 1145 struct my_list_data *ld; 1146 int i; 1147 1148 MY_LOCK(sc); 1149 cd = &sc->my_cdata; 1150 ld = sc->my_ldata; 1151 for (i = 0; i < MY_RX_LIST_CNT; i++) { 1152 cd->my_rx_chain[i].my_ptr = 1153 (struct my_desc *) & ld->my_rx_list[i]; 1154 if (my_newbuf(sc, &cd->my_rx_chain[i]) == ENOBUFS) { 1155 MY_UNLOCK(sc); 1156 return (ENOBUFS); 1157 } 1158 if (i == (MY_RX_LIST_CNT - 1)) { 1159 cd->my_rx_chain[i].my_nextdesc = &cd->my_rx_chain[0]; 1160 ld->my_rx_list[i].my_next = vtophys(&ld->my_rx_list[0]); 1161 } else { 1162 cd->my_rx_chain[i].my_nextdesc = 1163 &cd->my_rx_chain[i + 1]; 1164 ld->my_rx_list[i].my_next = 1165 vtophys(&ld->my_rx_list[i + 1]); 1166 } 1167 } 1168 cd->my_rx_head = &cd->my_rx_chain[0]; 1169 MY_UNLOCK(sc); 1170 return (0); 1171} 1172 1173/* 1174 * Initialize an RX descriptor and attach an MBUF cluster. 1175 */ 1176static int 1177my_newbuf(struct my_softc * sc, struct my_chain_onefrag * c) 1178{ 1179 struct mbuf *m_new = NULL; 1180 1181 MY_LOCK(sc); 1182 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1183 if (m_new == NULL) { 1184 printf("my%d: no memory for rx list -- packet dropped!\n", 1185 sc->my_unit); 1186 MY_UNLOCK(sc); 1187 return (ENOBUFS); 1188 } 1189 MCLGET(m_new, M_DONTWAIT); 1190 if (!(m_new->m_flags & M_EXT)) { 1191 printf("my%d: no memory for rx list -- packet dropped!\n", 1192 sc->my_unit); 1193 m_freem(m_new); 1194 MY_UNLOCK(sc); 1195 return (ENOBUFS); 1196 } 1197 c->my_mbuf = m_new; 1198 c->my_ptr->my_data = vtophys(mtod(m_new, caddr_t)); 1199 c->my_ptr->my_ctl = (MCLBYTES - 1) << MY_RBSShift; 1200 c->my_ptr->my_status = MY_OWNByNIC; 1201 MY_UNLOCK(sc); 1202 return (0); 1203} 1204 1205/* 1206 * A frame has been uploaded: pass the resulting mbuf chain up to the higher 1207 * level protocols. 1208 */ 1209static void 1210my_rxeof(struct my_softc * sc) 1211{ 1212 struct ether_header *eh; 1213 struct mbuf *m; 1214 struct ifnet *ifp; 1215 struct my_chain_onefrag *cur_rx; 1216 int total_len = 0; 1217 u_int32_t rxstat; 1218 1219 MY_LOCK(sc); 1220 ifp = &sc->arpcom.ac_if; 1221 while (!((rxstat = sc->my_cdata.my_rx_head->my_ptr->my_status) 1222 & MY_OWNByNIC)) { 1223 cur_rx = sc->my_cdata.my_rx_head; 1224 sc->my_cdata.my_rx_head = cur_rx->my_nextdesc; 1225 1226 if (rxstat & MY_ES) { /* error summary: give up this rx pkt */ 1227 ifp->if_ierrors++; 1228 cur_rx->my_ptr->my_status = MY_OWNByNIC; 1229 continue; 1230 } 1231 /* No errors; receive the packet. */ 1232 total_len = (rxstat & MY_FLNGMASK) >> MY_FLNGShift; 1233 total_len -= ETHER_CRC_LEN; 1234 1235 if (total_len < MINCLSIZE) { 1236 m = m_devget(mtod(cur_rx->my_mbuf, char *), 1237 total_len, 0, ifp, NULL); 1238 cur_rx->my_ptr->my_status = MY_OWNByNIC; 1239 if (m == NULL) { 1240 ifp->if_ierrors++; 1241 continue; 1242 } 1243 } else { 1244 m = cur_rx->my_mbuf; 1245 /* 1246 * Try to conjure up a new mbuf cluster. If that 1247 * fails, it means we have an out of memory condition 1248 * and should leave the buffer in place and continue. 1249 * This will result in a lost packet, but there's 1250 * little else we can do in this situation. 1251 */ 1252 if (my_newbuf(sc, cur_rx) == ENOBUFS) { 1253 ifp->if_ierrors++; 1254 cur_rx->my_ptr->my_status = MY_OWNByNIC; 1255 continue; 1256 } 1257 m->m_pkthdr.rcvif = ifp; 1258 m->m_pkthdr.len = m->m_len = total_len; 1259 } 1260 ifp->if_ipackets++; 1261 eh = mtod(m, struct ether_header *); 1262#if NBPFILTER > 0 1263 /* 1264 * Handle BPF listeners. Let the BPF user see the packet, but 1265 * don't pass it up to the ether_input() layer unless it's a 1266 * broadcast packet, multicast packet, matches our ethernet 1267 * address or the interface is in promiscuous mode. 1268 */ 1269 if (ifp->if_bpf) { 1270 BPF_MTAP(ifp, m); 1271 if (ifp->if_flags & IFF_PROMISC && 1272 (bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, 1273 ETHER_ADDR_LEN) && 1274 (eh->ether_dhost[0] & 1) == 0)) { 1275 m_freem(m); 1276 continue; 1277 } 1278 } 1279#endif 1280 MY_UNLOCK(sc); 1281 (*ifp->if_input)(ifp, m); 1282 MY_LOCK(sc); 1283 } 1284 MY_UNLOCK(sc); 1285 return; 1286} 1287 1288 1289/* 1290 * A frame was downloaded to the chip. It's safe for us to clean up the list 1291 * buffers. 1292 */ 1293static void 1294my_txeof(struct my_softc * sc) 1295{ 1296 struct my_chain *cur_tx; 1297 struct ifnet *ifp; 1298 1299 MY_LOCK(sc); 1300 ifp = &sc->arpcom.ac_if; 1301 /* Clear the timeout timer. */ 1302 ifp->if_timer = 0; 1303 if (sc->my_cdata.my_tx_head == NULL) { 1304 MY_UNLOCK(sc); 1305 return; 1306 } 1307 /* 1308 * Go through our tx list and free mbufs for those frames that have 1309 * been transmitted. 1310 */ 1311 while (sc->my_cdata.my_tx_head->my_mbuf != NULL) { 1312 u_int32_t txstat; 1313 1314 cur_tx = sc->my_cdata.my_tx_head; 1315 txstat = MY_TXSTATUS(cur_tx); 1316 if ((txstat & MY_OWNByNIC) || txstat == MY_UNSENT) 1317 break; 1318 if (!(CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced)) { 1319 if (txstat & MY_TXERR) { 1320 ifp->if_oerrors++; 1321 if (txstat & MY_EC) /* excessive collision */ 1322 ifp->if_collisions++; 1323 if (txstat & MY_LC) /* late collision */ 1324 ifp->if_collisions++; 1325 } 1326 ifp->if_collisions += (txstat & MY_NCRMASK) >> 1327 MY_NCRShift; 1328 } 1329 ifp->if_opackets++; 1330 m_freem(cur_tx->my_mbuf); 1331 cur_tx->my_mbuf = NULL; 1332 if (sc->my_cdata.my_tx_head == sc->my_cdata.my_tx_tail) { 1333 sc->my_cdata.my_tx_head = NULL; 1334 sc->my_cdata.my_tx_tail = NULL; 1335 break; 1336 } 1337 sc->my_cdata.my_tx_head = cur_tx->my_nextdesc; 1338 } 1339 if (CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced) { 1340 ifp->if_collisions += (CSR_READ_4(sc, MY_TSR) & MY_NCRMask); 1341 } 1342 MY_UNLOCK(sc); 1343 return; 1344} 1345 1346/* 1347 * TX 'end of channel' interrupt handler. 1348 */ 1349static void 1350my_txeoc(struct my_softc * sc) 1351{ 1352 struct ifnet *ifp; 1353 1354 MY_LOCK(sc); 1355 ifp = &sc->arpcom.ac_if; 1356 ifp->if_timer = 0; 1357 if (sc->my_cdata.my_tx_head == NULL) { 1358 ifp->if_flags &= ~IFF_OACTIVE; 1359 sc->my_cdata.my_tx_tail = NULL; 1360 if (sc->my_want_auto) 1361 my_autoneg_mii(sc, MY_FLAG_SCHEDDELAY, 1); 1362 } else { 1363 if (MY_TXOWN(sc->my_cdata.my_tx_head) == MY_UNSENT) { 1364 MY_TXOWN(sc->my_cdata.my_tx_head) = MY_OWNByNIC; 1365 ifp->if_timer = 5; 1366 CSR_WRITE_4(sc, MY_TXPDR, 0xFFFFFFFF); 1367 } 1368 } 1369 MY_UNLOCK(sc); 1370 return; 1371} 1372 1373static void 1374my_intr(void *arg) 1375{ 1376 struct my_softc *sc; 1377 struct ifnet *ifp; 1378 u_int32_t status; 1379 1380 sc = arg; 1381 MY_LOCK(sc); 1382 ifp = &sc->arpcom.ac_if; 1383 if (!(ifp->if_flags & IFF_UP)) { 1384 MY_UNLOCK(sc); 1385 return; 1386 } 1387 /* Disable interrupts. */ 1388 CSR_WRITE_4(sc, MY_IMR, 0x00000000); 1389 1390 for (;;) { 1391 status = CSR_READ_4(sc, MY_ISR); 1392 status &= MY_INTRS; 1393 if (status) 1394 CSR_WRITE_4(sc, MY_ISR, status); 1395 else 1396 break; 1397 1398 if (status & MY_RI) /* receive interrupt */ 1399 my_rxeof(sc); 1400 1401 if ((status & MY_RBU) || (status & MY_RxErr)) { 1402 /* rx buffer unavailable or rx error */ 1403 ifp->if_ierrors++; 1404#ifdef foo 1405 my_stop(sc); 1406 my_reset(sc); 1407 my_init(sc); 1408#endif 1409 } 1410 if (status & MY_TI) /* tx interrupt */ 1411 my_txeof(sc); 1412 if (status & MY_ETI) /* tx early interrupt */ 1413 my_txeof(sc); 1414 if (status & MY_TBU) /* tx buffer unavailable */ 1415 my_txeoc(sc); 1416 1417#if 0 /* 90/1/18 delete */ 1418 if (status & MY_FBE) { 1419 my_reset(sc); 1420 my_init(sc); 1421 } 1422#endif 1423 1424 } 1425 1426 /* Re-enable interrupts. */ 1427 CSR_WRITE_4(sc, MY_IMR, MY_INTRS); 1428 if (ifp->if_snd.ifq_head != NULL) 1429 my_start(ifp); 1430 MY_UNLOCK(sc); 1431 return; 1432} 1433 1434/* 1435 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1436 * pointers to the fragment pointers. 1437 */ 1438static int 1439my_encap(struct my_softc * sc, struct my_chain * c, struct mbuf * m_head) 1440{ 1441 struct my_desc *f = NULL; 1442 int total_len; 1443 struct mbuf *m, *m_new = NULL; 1444 1445 MY_LOCK(sc); 1446 /* calculate the total tx pkt length */ 1447 total_len = 0; 1448 for (m = m_head; m != NULL; m = m->m_next) 1449 total_len += m->m_len; 1450 /* 1451 * Start packing the mbufs in this chain into the fragment pointers. 1452 * Stop when we run out of fragments or hit the end of the mbuf 1453 * chain. 1454 */ 1455 m = m_head; 1456 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1457 if (m_new == NULL) { 1458 printf("my%d: no memory for tx list", sc->my_unit); 1459 MY_UNLOCK(sc); 1460 return (1); 1461 } 1462 if (m_head->m_pkthdr.len > MHLEN) { 1463 MCLGET(m_new, M_DONTWAIT); 1464 if (!(m_new->m_flags & M_EXT)) { 1465 m_freem(m_new); 1466 printf("my%d: no memory for tx list", sc->my_unit); 1467 MY_UNLOCK(sc); 1468 return (1); 1469 } 1470 } 1471 m_copydata(m_head, 0, m_head->m_pkthdr.len, mtod(m_new, caddr_t)); 1472 m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len; 1473 m_freem(m_head); 1474 m_head = m_new; 1475 f = &c->my_ptr->my_frag[0]; 1476 f->my_status = 0; 1477 f->my_data = vtophys(mtod(m_new, caddr_t)); 1478 total_len = m_new->m_len; 1479 f->my_ctl = MY_TXFD | MY_TXLD | MY_CRCEnable | MY_PADEnable; 1480 f->my_ctl |= total_len << MY_PKTShift; /* pkt size */ 1481 f->my_ctl |= total_len; /* buffer size */ 1482 /* 89/12/29 add, for mtd891 *//* [ 89? ] */ 1483 if (sc->my_info->my_did == MTD891ID) 1484 f->my_ctl |= MY_ETIControl | MY_RetryTxLC; 1485 c->my_mbuf = m_head; 1486 c->my_lastdesc = 0; 1487 MY_TXNEXT(c) = vtophys(&c->my_nextdesc->my_ptr->my_frag[0]); 1488 MY_UNLOCK(sc); 1489 return (0); 1490} 1491 1492/* 1493 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1494 * to the mbuf data regions directly in the transmit lists. We also save a 1495 * copy of the pointers since the transmit list fragment pointers are 1496 * physical addresses. 1497 */ 1498static void 1499my_start(struct ifnet * ifp) 1500{ 1501 struct my_softc *sc; 1502 struct mbuf *m_head = NULL; 1503 struct my_chain *cur_tx = NULL, *start_tx; 1504 1505 sc = ifp->if_softc; 1506 MY_LOCK(sc); 1507 if (sc->my_autoneg) { 1508 sc->my_tx_pend = 1; 1509 MY_UNLOCK(sc); 1510 return; 1511 } 1512 /* 1513 * Check for an available queue slot. If there are none, punt. 1514 */ 1515 if (sc->my_cdata.my_tx_free->my_mbuf != NULL) { 1516 ifp->if_flags |= IFF_OACTIVE; 1517 MY_UNLOCK(sc); 1518 return; 1519 } 1520 start_tx = sc->my_cdata.my_tx_free; 1521 while (sc->my_cdata.my_tx_free->my_mbuf == NULL) { 1522 IF_DEQUEUE(&ifp->if_snd, m_head); 1523 if (m_head == NULL) 1524 break; 1525 1526 /* Pick a descriptor off the free list. */ 1527 cur_tx = sc->my_cdata.my_tx_free; 1528 sc->my_cdata.my_tx_free = cur_tx->my_nextdesc; 1529 1530 /* Pack the data into the descriptor. */ 1531 my_encap(sc, cur_tx, m_head); 1532 1533 if (cur_tx != start_tx) 1534 MY_TXOWN(cur_tx) = MY_OWNByNIC; 1535#if NBPFILTER > 0 1536 /* 1537 * If there's a BPF listener, bounce a copy of this frame to 1538 * him. 1539 */ 1540 BPF_MTAP(ifp, cur_tx->my_mbuf); 1541#endif 1542 } 1543 /* 1544 * If there are no packets queued, bail. 1545 */ 1546 if (cur_tx == NULL) { 1547 MY_UNLOCK(sc); 1548 return; 1549 } 1550 /* 1551 * Place the request for the upload interrupt in the last descriptor 1552 * in the chain. This way, if we're chaining several packets at once, 1553 * we'll only get an interupt once for the whole chain rather than 1554 * once for each packet. 1555 */ 1556 MY_TXCTL(cur_tx) |= MY_TXIC; 1557 cur_tx->my_ptr->my_frag[0].my_ctl |= MY_TXIC; 1558 sc->my_cdata.my_tx_tail = cur_tx; 1559 if (sc->my_cdata.my_tx_head == NULL) 1560 sc->my_cdata.my_tx_head = start_tx; 1561 MY_TXOWN(start_tx) = MY_OWNByNIC; 1562 CSR_WRITE_4(sc, MY_TXPDR, 0xFFFFFFFF); /* tx polling demand */ 1563 1564 /* 1565 * Set a timeout in case the chip goes out to lunch. 1566 */ 1567 ifp->if_timer = 5; 1568 MY_UNLOCK(sc); 1569 return; 1570} 1571 1572static void 1573my_init(void *xsc) 1574{ 1575 struct my_softc *sc = xsc; 1576 struct ifnet *ifp = &sc->arpcom.ac_if; 1577 int s; 1578 u_int16_t phy_bmcr = 0; 1579 1580 MY_LOCK(sc); 1581 if (sc->my_autoneg) { 1582 MY_UNLOCK(sc); 1583 return; 1584 } 1585 s = splimp(); 1586 if (sc->my_pinfo != NULL) 1587 phy_bmcr = my_phy_readreg(sc, PHY_BMCR); 1588 /* 1589 * Cancel pending I/O and free all RX/TX buffers. 1590 */ 1591 my_stop(sc); 1592 my_reset(sc); 1593 1594 /* 1595 * Set cache alignment and burst length. 1596 */ 1597#if 0 /* 89/9/1 modify, */ 1598 CSR_WRITE_4(sc, MY_BCR, MY_RPBLE512); 1599 CSR_WRITE_4(sc, MY_TCRRCR, MY_TFTSF); 1600#endif 1601 CSR_WRITE_4(sc, MY_BCR, MY_PBL8); 1602 CSR_WRITE_4(sc, MY_TCRRCR, MY_TFTSF | MY_RBLEN | MY_RPBLE512); 1603 /* 1604 * 89/12/29 add, for mtd891, 1605 */ 1606 if (sc->my_info->my_did == MTD891ID) { 1607 MY_SETBIT(sc, MY_BCR, MY_PROG); 1608 MY_SETBIT(sc, MY_TCRRCR, MY_Enhanced); 1609 } 1610 my_setcfg(sc, phy_bmcr); 1611 /* Init circular RX list. */ 1612 if (my_list_rx_init(sc) == ENOBUFS) { 1613 printf("my%d: init failed: no memory for rx buffers\n", 1614 sc->my_unit); 1615 my_stop(sc); 1616 (void)splx(s); 1617 MY_UNLOCK(sc); 1618 return; 1619 } 1620 /* Init TX descriptors. */ 1621 my_list_tx_init(sc); 1622 1623 /* If we want promiscuous mode, set the allframes bit. */ 1624 if (ifp->if_flags & IFF_PROMISC) 1625 MY_SETBIT(sc, MY_TCRRCR, MY_PROM); 1626 else 1627 MY_CLRBIT(sc, MY_TCRRCR, MY_PROM); 1628 1629 /* 1630 * Set capture broadcast bit to capture broadcast frames. 1631 */ 1632 if (ifp->if_flags & IFF_BROADCAST) 1633 MY_SETBIT(sc, MY_TCRRCR, MY_AB); 1634 else 1635 MY_CLRBIT(sc, MY_TCRRCR, MY_AB); 1636 1637 /* 1638 * Program the multicast filter, if necessary. 1639 */ 1640 my_setmulti(sc); 1641 1642 /* 1643 * Load the address of the RX list. 1644 */ 1645 MY_CLRBIT(sc, MY_TCRRCR, MY_RE); 1646 CSR_WRITE_4(sc, MY_RXLBA, vtophys(&sc->my_ldata->my_rx_list[0])); 1647 1648 /* 1649 * Enable interrupts. 1650 */ 1651 CSR_WRITE_4(sc, MY_IMR, MY_INTRS); 1652 CSR_WRITE_4(sc, MY_ISR, 0xFFFFFFFF); 1653 1654 /* Enable receiver and transmitter. */ 1655 MY_SETBIT(sc, MY_TCRRCR, MY_RE); 1656 MY_CLRBIT(sc, MY_TCRRCR, MY_TE); 1657 CSR_WRITE_4(sc, MY_TXLBA, vtophys(&sc->my_ldata->my_tx_list[0])); 1658 MY_SETBIT(sc, MY_TCRRCR, MY_TE); 1659 1660 /* Restore state of BMCR */ 1661 if (sc->my_pinfo != NULL) 1662 my_phy_writereg(sc, PHY_BMCR, phy_bmcr); 1663 ifp->if_flags |= IFF_RUNNING; 1664 ifp->if_flags &= ~IFF_OACTIVE; 1665 (void)splx(s); 1666 MY_UNLOCK(sc); 1667 return; 1668} 1669 1670/* 1671 * Set media options. 1672 */ 1673 1674static int 1675my_ifmedia_upd(struct ifnet * ifp) 1676{ 1677 struct my_softc *sc; 1678 struct ifmedia *ifm; 1679 1680 sc = ifp->if_softc; 1681 MY_LOCK(sc); 1682 ifm = &sc->ifmedia; 1683 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) { 1684 MY_UNLOCK(sc); 1685 return (EINVAL); 1686 } 1687 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 1688 my_autoneg_mii(sc, MY_FLAG_SCHEDDELAY, 1); 1689 else 1690 my_setmode_mii(sc, ifm->ifm_media); 1691 MY_UNLOCK(sc); 1692 return (0); 1693} 1694 1695/* 1696 * Report current media status. 1697 */ 1698 1699static void 1700my_ifmedia_sts(struct ifnet * ifp, struct ifmediareq * ifmr) 1701{ 1702 struct my_softc *sc; 1703 u_int16_t advert = 0, ability = 0; 1704 1705 sc = ifp->if_softc; 1706 MY_LOCK(sc); 1707 ifmr->ifm_active = IFM_ETHER; 1708 if (!(my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_AUTONEGENBL)) { 1709#if 0 /* this version did not support 1000M, */ 1710 if (my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_1000) 1711 ifmr->ifm_active = IFM_ETHER | IFM_1000TX; 1712#endif 1713 if (my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_SPEEDSEL) 1714 ifmr->ifm_active = IFM_ETHER | IFM_100_TX; 1715 else 1716 ifmr->ifm_active = IFM_ETHER | IFM_10_T; 1717 if (my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_DUPLEX) 1718 ifmr->ifm_active |= IFM_FDX; 1719 else 1720 ifmr->ifm_active |= IFM_HDX; 1721 1722 MY_UNLOCK(sc); 1723 return; 1724 } 1725 ability = my_phy_readreg(sc, PHY_LPAR); 1726 advert = my_phy_readreg(sc, PHY_ANAR); 1727 1728#if 0 /* this version did not support 1000M, */ 1729 if (sc->my_pinfo->my_vid = MarvellPHYID0) { 1730 ability2 = my_phy_readreg(sc, PHY_1000SR); 1731 if (ability2 & PHY_1000SR_1000BTXFULL) { 1732 advert = 0; 1733 ability = 0; 1734 ifmr->ifm_active = IFM_ETHER|IFM_1000_T|IFM_FDX; 1735 } else if (ability & PHY_1000SR_1000BTXHALF) { 1736 advert = 0; 1737 ability = 0; 1738 ifmr->ifm_active = IFM_ETHER|IFM_1000_T|IFM_HDX; 1739 } 1740 } 1741#endif 1742 if (advert & PHY_ANAR_100BT4 && ability & PHY_ANAR_100BT4) 1743 ifmr->ifm_active = IFM_ETHER | IFM_100_T4; 1744 else if (advert & PHY_ANAR_100BTXFULL && ability & PHY_ANAR_100BTXFULL) 1745 ifmr->ifm_active = IFM_ETHER | IFM_100_TX | IFM_FDX; 1746 else if (advert & PHY_ANAR_100BTXHALF && ability & PHY_ANAR_100BTXHALF) 1747 ifmr->ifm_active = IFM_ETHER | IFM_100_TX | IFM_HDX; 1748 else if (advert & PHY_ANAR_10BTFULL && ability & PHY_ANAR_10BTFULL) 1749 ifmr->ifm_active = IFM_ETHER | IFM_10_T | IFM_FDX; 1750 else if (advert & PHY_ANAR_10BTHALF && ability & PHY_ANAR_10BTHALF) 1751 ifmr->ifm_active = IFM_ETHER | IFM_10_T | IFM_HDX; 1752 MY_UNLOCK(sc); 1753 return; 1754} 1755 1756static int 1757my_ioctl(struct ifnet * ifp, u_long command, caddr_t data) 1758{ 1759 struct my_softc *sc = ifp->if_softc; 1760 struct ifreq *ifr = (struct ifreq *) data; 1761 int s, error = 0; 1762 1763 s = splimp(); 1764 MY_LOCK(sc); 1765 switch (command) { 1766 case SIOCSIFFLAGS: 1767 if (ifp->if_flags & IFF_UP) 1768 my_init(sc); 1769 else if (ifp->if_flags & IFF_RUNNING) 1770 my_stop(sc); 1771 error = 0; 1772 break; 1773 case SIOCADDMULTI: 1774 case SIOCDELMULTI: 1775 my_setmulti(sc); 1776 error = 0; 1777 break; 1778 case SIOCGIFMEDIA: 1779 case SIOCSIFMEDIA: 1780 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command); 1781 break; 1782 default: 1783 error = ether_ioctl(ifp, command, data); 1784 break; 1785 } 1786 MY_UNLOCK(sc); 1787 (void)splx(s); 1788 return (error); 1789} 1790 1791static void 1792my_watchdog(struct ifnet * ifp) 1793{ 1794 struct my_softc *sc; 1795 1796 sc = ifp->if_softc; 1797 MY_LOCK(sc); 1798 if (sc->my_autoneg) { 1799 my_autoneg_mii(sc, MY_FLAG_DELAYTIMEO, 1); 1800 MY_UNLOCK(sc); 1801 return; 1802 } 1803 ifp->if_oerrors++; 1804 printf("my%d: watchdog timeout\n", sc->my_unit); 1805 if (!(my_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT)) 1806 printf("my%d: no carrier - transceiver cable problem?\n", 1807 sc->my_unit); 1808 my_stop(sc); 1809 my_reset(sc); 1810 my_init(sc); 1811 if (ifp->if_snd.ifq_head != NULL) 1812 my_start(ifp); 1813 MY_LOCK(sc); 1814 return; 1815} 1816 1817 1818/* 1819 * Stop the adapter and free any mbufs allocated to the RX and TX lists. 1820 */ 1821static void 1822my_stop(struct my_softc * sc) 1823{ 1824 register int i; 1825 struct ifnet *ifp; 1826 1827 MY_LOCK(sc); 1828 ifp = &sc->arpcom.ac_if; 1829 ifp->if_timer = 0; 1830 1831 MY_CLRBIT(sc, MY_TCRRCR, (MY_RE | MY_TE)); 1832 CSR_WRITE_4(sc, MY_IMR, 0x00000000); 1833 CSR_WRITE_4(sc, MY_TXLBA, 0x00000000); 1834 CSR_WRITE_4(sc, MY_RXLBA, 0x00000000); 1835 1836 /* 1837 * Free data in the RX lists. 1838 */ 1839 for (i = 0; i < MY_RX_LIST_CNT; i++) { 1840 if (sc->my_cdata.my_rx_chain[i].my_mbuf != NULL) { 1841 m_freem(sc->my_cdata.my_rx_chain[i].my_mbuf); 1842 sc->my_cdata.my_rx_chain[i].my_mbuf = NULL; 1843 } 1844 } 1845 bzero((char *)&sc->my_ldata->my_rx_list, 1846 sizeof(sc->my_ldata->my_rx_list)); 1847 /* 1848 * Free the TX list buffers. 1849 */ 1850 for (i = 0; i < MY_TX_LIST_CNT; i++) { 1851 if (sc->my_cdata.my_tx_chain[i].my_mbuf != NULL) { 1852 m_freem(sc->my_cdata.my_tx_chain[i].my_mbuf); 1853 sc->my_cdata.my_tx_chain[i].my_mbuf = NULL; 1854 } 1855 } 1856 bzero((char *)&sc->my_ldata->my_tx_list, 1857 sizeof(sc->my_ldata->my_tx_list)); 1858 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1859 MY_UNLOCK(sc); 1860 return; 1861} 1862 1863/* 1864 * Stop all chip I/O so that the kernel's probe routines don't get confused 1865 * by errant DMAs when rebooting. 1866 */ 1867static void 1868my_shutdown(device_t dev) 1869{ 1870 struct my_softc *sc; 1871 1872 sc = device_get_softc(dev); 1873 my_stop(sc); 1874 return; 1875} 1876