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("$FreeBSD$"); 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 78 static 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 92 static 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 */ 99 struct my_type *my_info_tmp; 100 static 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 */ 112 static 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 }; 120 121 static int my_probe(device_t); 122 static int my_attach(device_t); 123 static int my_detach(device_t); 124 static int my_newbuf(struct my_softc *, struct my_chain_onefrag *); 125 static int my_encap(struct my_softc *, struct my_chain *, struct mbuf *); 126 static void my_rxeof(struct my_softc *); 127 static void my_txeof(struct my_softc *); 128 static void my_txeoc(struct my_softc *); 129 static void my_intr(void *); 130 static void my_start(struct ifnet *); 131 static int my_ioctl(struct ifnet *, u_long, caddr_t); 132 static void my_init(void *); 133 static void my_stop(struct my_softc *); 134 static void my_watchdog(struct ifnet *); 135 static void my_shutdown(device_t); 136 static int my_ifmedia_upd(struct ifnet *); 137 static void my_ifmedia_sts(struct ifnet *, struct ifmediareq *); 138 static u_int16_t my_phy_readreg(struct my_softc *, int); 139 static void my_phy_writereg(struct my_softc *, int, int); 140 static void my_autoneg_xmit(struct my_softc *); 141 static void my_autoneg_mii(struct my_softc *, int, int); 142 static void my_setmode_mii(struct my_softc *, int); 143 static void my_getmode_mii(struct my_softc *); 144 static void my_setcfg(struct my_softc *, int); 145 static uint32_t my_mchash(const uint8_t *); 146 static void my_setmulti(struct my_softc *); 147 static void my_reset(struct my_softc *); 148 static int my_list_rx_init(struct my_softc *); 149 static int my_list_tx_init(struct my_softc *); 150 static 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)) 154 155 static 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 }; 164 165 static driver_t my_driver = { 166 "my", 167 my_methods, 168 sizeof(struct my_softc) 169 }; 170 171 static devclass_t my_devclass; 172 173 DRIVER_MODULE(my, pci, my_driver, my_devclass, 0, 0); 174 MODULE_DEPEND(my, pci, 1, 1, 1); 175 MODULE_DEPEND(my, ether, 1, 1, 1); 176 177 static long 178 my_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 } 229 230 231 static u_int16_t 232 my_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 } 274 275 276 static void 277 my_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 } 315 316 static uint32_t 317 my_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 */ 348 static void 349 my_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 */ 404 static void 405 my_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 */ 427 static void 428 my_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 */ 596 static void 597 my_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 */ 694 static void 695 my_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 */ 756 static void 757 my_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 } 790 791 static void 792 my_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 */ 816 static int 817 my_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 */ 838 static int 839 my_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_any(dev, MY_RES, &rid, RF_ACTIVE); 922 923 if (sc->my_res == NULL) { 924 printf("my%d: couldn't map ports/memory\n", unit); 925 error = ENXIO; 926 goto fail; 927 } 928 sc->my_btag = rman_get_bustag(sc->my_res); 929 sc->my_bhandle = rman_get_bushandle(sc->my_res); 930 931 rid = 0; 932 sc->my_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 933 RF_SHAREABLE | RF_ACTIVE); 934 935 if (sc->my_irq == NULL) { 936 printf("my%d: couldn't map interrupt\n", unit); 937 bus_release_resource(dev, MY_RES, MY_RID, sc->my_res); 938 error = ENXIO; 939 goto fail; 940 } 941 error = bus_setup_intr(dev, sc->my_irq, INTR_TYPE_NET, 942 my_intr, sc, &sc->my_intrhand); 943 944 if (error) { 945 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->my_irq); 946 bus_release_resource(dev, MY_RES, MY_RID, sc->my_res); 947 printf("my%d: couldn't set up irq\n", unit); 948 goto fail; 949 } 950 callout_handle_init(&sc->my_stat_ch); 951 952 sc->my_info = my_info_tmp; 953 954 /* Reset the adapter. */ 955 my_reset(sc); 956 957 /* 958 * Get station address 959 */ 960 for (i = 0; i < ETHER_ADDR_LEN; ++i) 961 eaddr[i] = CSR_READ_1(sc, MY_PAR0 + i); 962 963 sc->my_unit = unit; 964 bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 965 966 sc->my_ldata_ptr = malloc(sizeof(struct my_list_data) + 8, 967 M_DEVBUF, M_NOWAIT); 968 if (sc->my_ldata_ptr == NULL) { 969 free(sc, M_DEVBUF); 970 printf("my%d: no memory for list buffers!\n", unit); 971 error = ENXIO; 972 goto fail; 973 } 974 sc->my_ldata = (struct my_list_data *) sc->my_ldata_ptr; 975 round = (uintptr_t)sc->my_ldata_ptr & 0xF; 976 roundptr = sc->my_ldata_ptr; 977 for (i = 0; i < 8; i++) { 978 if (round % 8) { 979 round++; 980 roundptr++; 981 } else 982 break; 983 } 984 sc->my_ldata = (struct my_list_data *) roundptr; 985 bzero(sc->my_ldata, sizeof(struct my_list_data)); 986 987 ifp = &sc->arpcom.ac_if; 988 ifp->if_softc = sc; 989 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 990 ifp->if_mtu = ETHERMTU; 991 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 992 ifp->if_ioctl = my_ioctl; 993 ifp->if_start = my_start; 994 ifp->if_watchdog = my_watchdog; 995 ifp->if_init = my_init; 996 ifp->if_baudrate = 10000000; 997 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 998 999 if (sc->my_info->my_did == MTD803ID) 1000 sc->my_pinfo = my_phys; 1001 else { 1002 if (bootverbose) 1003 printf("my%d: probing for a PHY\n", sc->my_unit); 1004 for (i = MY_PHYADDR_MIN; i < MY_PHYADDR_MAX + 1; i++) { 1005 if (bootverbose) 1006 printf("my%d: checking address: %d\n", 1007 sc->my_unit, i); 1008 sc->my_phy_addr = i; 1009 phy_sts = my_phy_readreg(sc, PHY_BMSR); 1010 if ((phy_sts != 0) && (phy_sts != 0xffff)) 1011 break; 1012 else 1013 phy_sts = 0; 1014 } 1015 if (phy_sts) { 1016 phy_vid = my_phy_readreg(sc, PHY_VENID); 1017 phy_did = my_phy_readreg(sc, PHY_DEVID); 1018 if (bootverbose) { 1019 printf("my%d: found PHY at address %d, ", 1020 sc->my_unit, sc->my_phy_addr); 1021 printf("vendor id: %x device id: %x\n", 1022 phy_vid, phy_did); 1023 } 1024 p = my_phys; 1025 while (p->my_vid) { 1026 if (phy_vid == p->my_vid) { 1027 sc->my_pinfo = p; 1028 break; 1029 } 1030 p++; 1031 } 1032 if (sc->my_pinfo == NULL) 1033 sc->my_pinfo = &my_phys[PHY_UNKNOWN]; 1034 if (bootverbose) 1035 printf("my%d: PHY type: %s\n", 1036 sc->my_unit, sc->my_pinfo->my_name); 1037 } else { 1038 printf("my%d: MII without any phy!\n", sc->my_unit); 1039 error = ENXIO; 1040 goto fail; 1041 } 1042 } 1043 1044 /* Do ifmedia setup. */ 1045 ifmedia_init(&sc->ifmedia, 0, my_ifmedia_upd, my_ifmedia_sts); 1046 my_getmode_mii(sc); 1047 my_autoneg_mii(sc, MY_FLAG_FORCEDELAY, 1); 1048 media = sc->ifmedia.ifm_media; 1049 my_stop(sc); 1050 ifmedia_set(&sc->ifmedia, media); 1051 1052 ether_ifattach(ifp, eaddr); 1053 1054 #if 0 1055 at_shutdown(my_shutdown, sc, SHUTDOWN_POST_SYNC); 1056 shutdownhook_establish(my_shutdown, sc); 1057 #endif 1058 1059 MY_UNLOCK(sc); 1060 return (0); 1061 1062 fail: 1063 MY_UNLOCK(sc); 1064 mtx_destroy(&sc->my_mtx); 1065 splx(s); 1066 return (error); 1067 } 1068 1069 static int 1070 my_detach(device_t dev) 1071 { 1072 struct my_softc *sc; 1073 struct ifnet *ifp; 1074 int s; 1075 1076 s = splimp(); 1077 sc = device_get_softc(dev); 1078 MY_LOCK(sc); 1079 ifp = &sc->arpcom.ac_if; 1080 ether_ifdetach(ifp); 1081 my_stop(sc); 1082 1083 #if 0 1084 bus_generic_detach(dev); 1085 device_delete_child(dev, sc->rl_miibus); 1086 #endif 1087 1088 bus_teardown_intr(dev, sc->my_irq, sc->my_intrhand); 1089 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->my_irq); 1090 bus_release_resource(dev, MY_RES, MY_RID, sc->my_res); 1091 #if 0 1092 contigfree(sc->my_cdata.my_rx_buf, MY_RXBUFLEN + 32, M_DEVBUF); 1093 #endif 1094 free(sc, M_DEVBUF); 1095 MY_UNLOCK(sc); 1096 splx(s); 1097 mtx_destroy(&sc->my_mtx); 1098 return (0); 1099 } 1100 1101 1102 /* 1103 * Initialize the transmit descriptors. 1104 */ 1105 static int 1106 my_list_tx_init(struct my_softc * sc) 1107 { 1108 struct my_chain_data *cd; 1109 struct my_list_data *ld; 1110 int i; 1111 1112 MY_LOCK(sc); 1113 cd = &sc->my_cdata; 1114 ld = sc->my_ldata; 1115 for (i = 0; i < MY_TX_LIST_CNT; i++) { 1116 cd->my_tx_chain[i].my_ptr = &ld->my_tx_list[i]; 1117 if (i == (MY_TX_LIST_CNT - 1)) 1118 cd->my_tx_chain[i].my_nextdesc = &cd->my_tx_chain[0]; 1119 else 1120 cd->my_tx_chain[i].my_nextdesc = 1121 &cd->my_tx_chain[i + 1]; 1122 } 1123 cd->my_tx_free = &cd->my_tx_chain[0]; 1124 cd->my_tx_tail = cd->my_tx_head = NULL; 1125 MY_UNLOCK(sc); 1126 return (0); 1127 } 1128 1129 /* 1130 * Initialize the RX descriptors and allocate mbufs for them. Note that we 1131 * arrange the descriptors in a closed ring, so that the last descriptor 1132 * points back to the first. 1133 */ 1134 static int 1135 my_list_rx_init(struct my_softc * sc) 1136 { 1137 struct my_chain_data *cd; 1138 struct my_list_data *ld; 1139 int i; 1140 1141 MY_LOCK(sc); 1142 cd = &sc->my_cdata; 1143 ld = sc->my_ldata; 1144 for (i = 0; i < MY_RX_LIST_CNT; i++) { 1145 cd->my_rx_chain[i].my_ptr = 1146 (struct my_desc *) & ld->my_rx_list[i]; 1147 if (my_newbuf(sc, &cd->my_rx_chain[i]) == ENOBUFS) { 1148 MY_UNLOCK(sc); 1149 return (ENOBUFS); 1150 } 1151 if (i == (MY_RX_LIST_CNT - 1)) { 1152 cd->my_rx_chain[i].my_nextdesc = &cd->my_rx_chain[0]; 1153 ld->my_rx_list[i].my_next = vtophys(&ld->my_rx_list[0]); 1154 } else { 1155 cd->my_rx_chain[i].my_nextdesc = 1156 &cd->my_rx_chain[i + 1]; 1157 ld->my_rx_list[i].my_next = 1158 vtophys(&ld->my_rx_list[i + 1]); 1159 } 1160 } 1161 cd->my_rx_head = &cd->my_rx_chain[0]; 1162 MY_UNLOCK(sc); 1163 return (0); 1164 } 1165 1166 /* 1167 * Initialize an RX descriptor and attach an MBUF cluster. 1168 */ 1169 static int 1170 my_newbuf(struct my_softc * sc, struct my_chain_onefrag * c) 1171 { 1172 struct mbuf *m_new = NULL; 1173 1174 MY_LOCK(sc); 1175 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1176 if (m_new == NULL) { 1177 printf("my%d: no memory for rx list -- packet dropped!\n", 1178 sc->my_unit); 1179 MY_UNLOCK(sc); 1180 return (ENOBUFS); 1181 } 1182 MCLGET(m_new, M_DONTWAIT); 1183 if (!(m_new->m_flags & M_EXT)) { 1184 printf("my%d: no memory for rx list -- packet dropped!\n", 1185 sc->my_unit); 1186 m_freem(m_new); 1187 MY_UNLOCK(sc); 1188 return (ENOBUFS); 1189 } 1190 c->my_mbuf = m_new; 1191 c->my_ptr->my_data = vtophys(mtod(m_new, caddr_t)); 1192 c->my_ptr->my_ctl = (MCLBYTES - 1) << MY_RBSShift; 1193 c->my_ptr->my_status = MY_OWNByNIC; 1194 MY_UNLOCK(sc); 1195 return (0); 1196 } 1197 1198 /* 1199 * A frame has been uploaded: pass the resulting mbuf chain up to the higher 1200 * level protocols. 1201 */ 1202 static void 1203 my_rxeof(struct my_softc * sc) 1204 { 1205 struct ether_header *eh; 1206 struct mbuf *m; 1207 struct ifnet *ifp; 1208 struct my_chain_onefrag *cur_rx; 1209 int total_len = 0; 1210 u_int32_t rxstat; 1211 1212 MY_LOCK(sc); 1213 ifp = &sc->arpcom.ac_if; 1214 while (!((rxstat = sc->my_cdata.my_rx_head->my_ptr->my_status) 1215 & MY_OWNByNIC)) { 1216 cur_rx = sc->my_cdata.my_rx_head; 1217 sc->my_cdata.my_rx_head = cur_rx->my_nextdesc; 1218 1219 if (rxstat & MY_ES) { /* error summary: give up this rx pkt */ 1220 ifp->if_ierrors++; 1221 cur_rx->my_ptr->my_status = MY_OWNByNIC; 1222 continue; 1223 } 1224 /* No errors; receive the packet. */ 1225 total_len = (rxstat & MY_FLNGMASK) >> MY_FLNGShift; 1226 total_len -= ETHER_CRC_LEN; 1227 1228 if (total_len < MINCLSIZE) { 1229 m = m_devget(mtod(cur_rx->my_mbuf, char *), 1230 total_len, 0, ifp, NULL); 1231 cur_rx->my_ptr->my_status = MY_OWNByNIC; 1232 if (m == NULL) { 1233 ifp->if_ierrors++; 1234 continue; 1235 } 1236 } else { 1237 m = cur_rx->my_mbuf; 1238 /* 1239 * Try to conjure up a new mbuf cluster. If that 1240 * fails, it means we have an out of memory condition 1241 * and should leave the buffer in place and continue. 1242 * This will result in a lost packet, but there's 1243 * little else we can do in this situation. 1244 */ 1245 if (my_newbuf(sc, cur_rx) == ENOBUFS) { 1246 ifp->if_ierrors++; 1247 cur_rx->my_ptr->my_status = MY_OWNByNIC; 1248 continue; 1249 } 1250 m->m_pkthdr.rcvif = ifp; 1251 m->m_pkthdr.len = m->m_len = total_len; 1252 } 1253 ifp->if_ipackets++; 1254 eh = mtod(m, struct ether_header *); 1255 #if NBPFILTER > 0 1256 /* 1257 * Handle BPF listeners. Let the BPF user see the packet, but 1258 * don't pass it up to the ether_input() layer unless it's a 1259 * broadcast packet, multicast packet, matches our ethernet 1260 * address or the interface is in promiscuous mode. 1261 */ 1262 if (ifp->if_bpf) { 1263 BPF_MTAP(ifp, m); 1264 if (ifp->if_flags & IFF_PROMISC && 1265 (bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, 1266 ETHER_ADDR_LEN) && 1267 (eh->ether_dhost[0] & 1) == 0)) { 1268 m_freem(m); 1269 continue; 1270 } 1271 } 1272 #endif 1273 MY_UNLOCK(sc); 1274 (*ifp->if_input)(ifp, m); 1275 MY_LOCK(sc); 1276 } 1277 MY_UNLOCK(sc); 1278 return; 1279 } 1280 1281 1282 /* 1283 * A frame was downloaded to the chip. It's safe for us to clean up the list 1284 * buffers. 1285 */ 1286 static void 1287 my_txeof(struct my_softc * sc) 1288 { 1289 struct my_chain *cur_tx; 1290 struct ifnet *ifp; 1291 1292 MY_LOCK(sc); 1293 ifp = &sc->arpcom.ac_if; 1294 /* Clear the timeout timer. */ 1295 ifp->if_timer = 0; 1296 if (sc->my_cdata.my_tx_head == NULL) { 1297 MY_UNLOCK(sc); 1298 return; 1299 } 1300 /* 1301 * Go through our tx list and free mbufs for those frames that have 1302 * been transmitted. 1303 */ 1304 while (sc->my_cdata.my_tx_head->my_mbuf != NULL) { 1305 u_int32_t txstat; 1306 1307 cur_tx = sc->my_cdata.my_tx_head; 1308 txstat = MY_TXSTATUS(cur_tx); 1309 if ((txstat & MY_OWNByNIC) || txstat == MY_UNSENT) 1310 break; 1311 if (!(CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced)) { 1312 if (txstat & MY_TXERR) { 1313 ifp->if_oerrors++; 1314 if (txstat & MY_EC) /* excessive collision */ 1315 ifp->if_collisions++; 1316 if (txstat & MY_LC) /* late collision */ 1317 ifp->if_collisions++; 1318 } 1319 ifp->if_collisions += (txstat & MY_NCRMASK) >> 1320 MY_NCRShift; 1321 } 1322 ifp->if_opackets++; 1323 m_freem(cur_tx->my_mbuf); 1324 cur_tx->my_mbuf = NULL; 1325 if (sc->my_cdata.my_tx_head == sc->my_cdata.my_tx_tail) { 1326 sc->my_cdata.my_tx_head = NULL; 1327 sc->my_cdata.my_tx_tail = NULL; 1328 break; 1329 } 1330 sc->my_cdata.my_tx_head = cur_tx->my_nextdesc; 1331 } 1332 if (CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced) { 1333 ifp->if_collisions += (CSR_READ_4(sc, MY_TSR) & MY_NCRMask); 1334 } 1335 MY_UNLOCK(sc); 1336 return; 1337 } 1338 1339 /* 1340 * TX 'end of channel' interrupt handler. 1341 */ 1342 static void 1343 my_txeoc(struct my_softc * sc) 1344 { 1345 struct ifnet *ifp; 1346 1347 MY_LOCK(sc); 1348 ifp = &sc->arpcom.ac_if; 1349 ifp->if_timer = 0; 1350 if (sc->my_cdata.my_tx_head == NULL) { 1351 ifp->if_flags &= ~IFF_OACTIVE; 1352 sc->my_cdata.my_tx_tail = NULL; 1353 if (sc->my_want_auto) 1354 my_autoneg_mii(sc, MY_FLAG_SCHEDDELAY, 1); 1355 } else { 1356 if (MY_TXOWN(sc->my_cdata.my_tx_head) == MY_UNSENT) { 1357 MY_TXOWN(sc->my_cdata.my_tx_head) = MY_OWNByNIC; 1358 ifp->if_timer = 5; 1359 CSR_WRITE_4(sc, MY_TXPDR, 0xFFFFFFFF); 1360 } 1361 } 1362 MY_UNLOCK(sc); 1363 return; 1364 } 1365 1366 static void 1367 my_intr(void *arg) 1368 { 1369 struct my_softc *sc; 1370 struct ifnet *ifp; 1371 u_int32_t status; 1372 1373 sc = arg; 1374 MY_LOCK(sc); 1375 ifp = &sc->arpcom.ac_if; 1376 if (!(ifp->if_flags & IFF_UP)) { 1377 MY_UNLOCK(sc); 1378 return; 1379 } 1380 /* Disable interrupts. */ 1381 CSR_WRITE_4(sc, MY_IMR, 0x00000000); 1382 1383 for (;;) { 1384 status = CSR_READ_4(sc, MY_ISR); 1385 status &= MY_INTRS; 1386 if (status) 1387 CSR_WRITE_4(sc, MY_ISR, status); 1388 else 1389 break; 1390 1391 if (status & MY_RI) /* receive interrupt */ 1392 my_rxeof(sc); 1393 1394 if ((status & MY_RBU) || (status & MY_RxErr)) { 1395 /* rx buffer unavailable or rx error */ 1396 ifp->if_ierrors++; 1397 #ifdef foo 1398 my_stop(sc); 1399 my_reset(sc); 1400 my_init(sc); 1401 #endif 1402 } 1403 if (status & MY_TI) /* tx interrupt */ 1404 my_txeof(sc); 1405 if (status & MY_ETI) /* tx early interrupt */ 1406 my_txeof(sc); 1407 if (status & MY_TBU) /* tx buffer unavailable */ 1408 my_txeoc(sc); 1409 1410 #if 0 /* 90/1/18 delete */ 1411 if (status & MY_FBE) { 1412 my_reset(sc); 1413 my_init(sc); 1414 } 1415 #endif 1416 1417 } 1418 1419 /* Re-enable interrupts. */ 1420 CSR_WRITE_4(sc, MY_IMR, MY_INTRS); 1421 if (ifp->if_snd.ifq_head != NULL) 1422 my_start(ifp); 1423 MY_UNLOCK(sc); 1424 return; 1425 } 1426 1427 /* 1428 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1429 * pointers to the fragment pointers. 1430 */ 1431 static int 1432 my_encap(struct my_softc * sc, struct my_chain * c, struct mbuf * m_head) 1433 { 1434 struct my_desc *f = NULL; 1435 int total_len; 1436 struct mbuf *m, *m_new = NULL; 1437 1438 MY_LOCK(sc); 1439 /* calculate the total tx pkt length */ 1440 total_len = 0; 1441 for (m = m_head; m != NULL; m = m->m_next) 1442 total_len += m->m_len; 1443 /* 1444 * Start packing the mbufs in this chain into the fragment pointers. 1445 * Stop when we run out of fragments or hit the end of the mbuf 1446 * chain. 1447 */ 1448 m = m_head; 1449 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 1450 if (m_new == NULL) { 1451 printf("my%d: no memory for tx list", sc->my_unit); 1452 MY_UNLOCK(sc); 1453 return (1); 1454 } 1455 if (m_head->m_pkthdr.len > MHLEN) { 1456 MCLGET(m_new, M_DONTWAIT); 1457 if (!(m_new->m_flags & M_EXT)) { 1458 m_freem(m_new); 1459 printf("my%d: no memory for tx list", sc->my_unit); 1460 MY_UNLOCK(sc); 1461 return (1); 1462 } 1463 } 1464 m_copydata(m_head, 0, m_head->m_pkthdr.len, mtod(m_new, caddr_t)); 1465 m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len; 1466 m_freem(m_head); 1467 m_head = m_new; 1468 f = &c->my_ptr->my_frag[0]; 1469 f->my_status = 0; 1470 f->my_data = vtophys(mtod(m_new, caddr_t)); 1471 total_len = m_new->m_len; 1472 f->my_ctl = MY_TXFD | MY_TXLD | MY_CRCEnable | MY_PADEnable; 1473 f->my_ctl |= total_len << MY_PKTShift; /* pkt size */ 1474 f->my_ctl |= total_len; /* buffer size */ 1475 /* 89/12/29 add, for mtd891 *//* [ 89? ] */ 1476 if (sc->my_info->my_did == MTD891ID) 1477 f->my_ctl |= MY_ETIControl | MY_RetryTxLC; 1478 c->my_mbuf = m_head; 1479 c->my_lastdesc = 0; 1480 MY_TXNEXT(c) = vtophys(&c->my_nextdesc->my_ptr->my_frag[0]); 1481 MY_UNLOCK(sc); 1482 return (0); 1483 } 1484 1485 /* 1486 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1487 * to the mbuf data regions directly in the transmit lists. We also save a 1488 * copy of the pointers since the transmit list fragment pointers are 1489 * physical addresses. 1490 */ 1491 static void 1492 my_start(struct ifnet * ifp) 1493 { 1494 struct my_softc *sc; 1495 struct mbuf *m_head = NULL; 1496 struct my_chain *cur_tx = NULL, *start_tx; 1497 1498 sc = ifp->if_softc; 1499 MY_LOCK(sc); 1500 if (sc->my_autoneg) { 1501 sc->my_tx_pend = 1; 1502 MY_UNLOCK(sc); 1503 return; 1504 } 1505 /* 1506 * Check for an available queue slot. If there are none, punt. 1507 */ 1508 if (sc->my_cdata.my_tx_free->my_mbuf != NULL) { 1509 ifp->if_flags |= IFF_OACTIVE; 1510 MY_UNLOCK(sc); 1511 return; 1512 } 1513 start_tx = sc->my_cdata.my_tx_free; 1514 while (sc->my_cdata.my_tx_free->my_mbuf == NULL) { 1515 IF_DEQUEUE(&ifp->if_snd, m_head); 1516 if (m_head == NULL) 1517 break; 1518 1519 /* Pick a descriptor off the free list. */ 1520 cur_tx = sc->my_cdata.my_tx_free; 1521 sc->my_cdata.my_tx_free = cur_tx->my_nextdesc; 1522 1523 /* Pack the data into the descriptor. */ 1524 my_encap(sc, cur_tx, m_head); 1525 1526 if (cur_tx != start_tx) 1527 MY_TXOWN(cur_tx) = MY_OWNByNIC; 1528 #if NBPFILTER > 0 1529 /* 1530 * If there's a BPF listener, bounce a copy of this frame to 1531 * him. 1532 */ 1533 BPF_MTAP(ifp, cur_tx->my_mbuf); 1534 #endif 1535 } 1536 /* 1537 * If there are no packets queued, bail. 1538 */ 1539 if (cur_tx == NULL) { 1540 MY_UNLOCK(sc); 1541 return; 1542 } 1543 /* 1544 * Place the request for the upload interrupt in the last descriptor 1545 * in the chain. This way, if we're chaining several packets at once, 1546 * we'll only get an interupt once for the whole chain rather than 1547 * once for each packet. 1548 */ 1549 MY_TXCTL(cur_tx) |= MY_TXIC; 1550 cur_tx->my_ptr->my_frag[0].my_ctl |= MY_TXIC; 1551 sc->my_cdata.my_tx_tail = cur_tx; 1552 if (sc->my_cdata.my_tx_head == NULL) 1553 sc->my_cdata.my_tx_head = start_tx; 1554 MY_TXOWN(start_tx) = MY_OWNByNIC; 1555 CSR_WRITE_4(sc, MY_TXPDR, 0xFFFFFFFF); /* tx polling demand */ 1556 1557 /* 1558 * Set a timeout in case the chip goes out to lunch. 1559 */ 1560 ifp->if_timer = 5; 1561 MY_UNLOCK(sc); 1562 return; 1563 } 1564 1565 static void 1566 my_init(void *xsc) 1567 { 1568 struct my_softc *sc = xsc; 1569 struct ifnet *ifp = &sc->arpcom.ac_if; 1570 int s; 1571 u_int16_t phy_bmcr = 0; 1572 1573 MY_LOCK(sc); 1574 if (sc->my_autoneg) { 1575 MY_UNLOCK(sc); 1576 return; 1577 } 1578 s = splimp(); 1579 if (sc->my_pinfo != NULL) 1580 phy_bmcr = my_phy_readreg(sc, PHY_BMCR); 1581 /* 1582 * Cancel pending I/O and free all RX/TX buffers. 1583 */ 1584 my_stop(sc); 1585 my_reset(sc); 1586 1587 /* 1588 * Set cache alignment and burst length. 1589 */ 1590 #if 0 /* 89/9/1 modify, */ 1591 CSR_WRITE_4(sc, MY_BCR, MY_RPBLE512); 1592 CSR_WRITE_4(sc, MY_TCRRCR, MY_TFTSF); 1593 #endif 1594 CSR_WRITE_4(sc, MY_BCR, MY_PBL8); 1595 CSR_WRITE_4(sc, MY_TCRRCR, MY_TFTSF | MY_RBLEN | MY_RPBLE512); 1596 /* 1597 * 89/12/29 add, for mtd891, 1598 */ 1599 if (sc->my_info->my_did == MTD891ID) { 1600 MY_SETBIT(sc, MY_BCR, MY_PROG); 1601 MY_SETBIT(sc, MY_TCRRCR, MY_Enhanced); 1602 } 1603 my_setcfg(sc, phy_bmcr); 1604 /* Init circular RX list. */ 1605 if (my_list_rx_init(sc) == ENOBUFS) { 1606 printf("my%d: init failed: no memory for rx buffers\n", 1607 sc->my_unit); 1608 my_stop(sc); 1609 (void)splx(s); 1610 MY_UNLOCK(sc); 1611 return; 1612 } 1613 /* Init TX descriptors. */ 1614 my_list_tx_init(sc); 1615 1616 /* If we want promiscuous mode, set the allframes bit. */ 1617 if (ifp->if_flags & IFF_PROMISC) 1618 MY_SETBIT(sc, MY_TCRRCR, MY_PROM); 1619 else 1620 MY_CLRBIT(sc, MY_TCRRCR, MY_PROM); 1621 1622 /* 1623 * Set capture broadcast bit to capture broadcast frames. 1624 */ 1625 if (ifp->if_flags & IFF_BROADCAST) 1626 MY_SETBIT(sc, MY_TCRRCR, MY_AB); 1627 else 1628 MY_CLRBIT(sc, MY_TCRRCR, MY_AB); 1629 1630 /* 1631 * Program the multicast filter, if necessary. 1632 */ 1633 my_setmulti(sc); 1634 1635 /* 1636 * Load the address of the RX list. 1637 */ 1638 MY_CLRBIT(sc, MY_TCRRCR, MY_RE); 1639 CSR_WRITE_4(sc, MY_RXLBA, vtophys(&sc->my_ldata->my_rx_list[0])); 1640 1641 /* 1642 * Enable interrupts. 1643 */ 1644 CSR_WRITE_4(sc, MY_IMR, MY_INTRS); 1645 CSR_WRITE_4(sc, MY_ISR, 0xFFFFFFFF); 1646 1647 /* Enable receiver and transmitter. */ 1648 MY_SETBIT(sc, MY_TCRRCR, MY_RE); 1649 MY_CLRBIT(sc, MY_TCRRCR, MY_TE); 1650 CSR_WRITE_4(sc, MY_TXLBA, vtophys(&sc->my_ldata->my_tx_list[0])); 1651 MY_SETBIT(sc, MY_TCRRCR, MY_TE); 1652 1653 /* Restore state of BMCR */ 1654 if (sc->my_pinfo != NULL) 1655 my_phy_writereg(sc, PHY_BMCR, phy_bmcr); 1656 ifp->if_flags |= IFF_RUNNING; 1657 ifp->if_flags &= ~IFF_OACTIVE; 1658 (void)splx(s); 1659 MY_UNLOCK(sc); 1660 return; 1661 } 1662 1663 /* 1664 * Set media options. 1665 */ 1666 1667 static int 1668 my_ifmedia_upd(struct ifnet * ifp) 1669 { 1670 struct my_softc *sc; 1671 struct ifmedia *ifm; 1672 1673 sc = ifp->if_softc; 1674 MY_LOCK(sc); 1675 ifm = &sc->ifmedia; 1676 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) { 1677 MY_UNLOCK(sc); 1678 return (EINVAL); 1679 } 1680 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 1681 my_autoneg_mii(sc, MY_FLAG_SCHEDDELAY, 1); 1682 else 1683 my_setmode_mii(sc, ifm->ifm_media); 1684 MY_UNLOCK(sc); 1685 return (0); 1686 } 1687 1688 /* 1689 * Report current media status. 1690 */ 1691 1692 static void 1693 my_ifmedia_sts(struct ifnet * ifp, struct ifmediareq * ifmr) 1694 { 1695 struct my_softc *sc; 1696 u_int16_t advert = 0, ability = 0; 1697 1698 sc = ifp->if_softc; 1699 MY_LOCK(sc); 1700 ifmr->ifm_active = IFM_ETHER; 1701 if (!(my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_AUTONEGENBL)) { 1702 #if 0 /* this version did not support 1000M, */ 1703 if (my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_1000) 1704 ifmr->ifm_active = IFM_ETHER | IFM_1000TX; 1705 #endif 1706 if (my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_SPEEDSEL) 1707 ifmr->ifm_active = IFM_ETHER | IFM_100_TX; 1708 else 1709 ifmr->ifm_active = IFM_ETHER | IFM_10_T; 1710 if (my_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_DUPLEX) 1711 ifmr->ifm_active |= IFM_FDX; 1712 else 1713 ifmr->ifm_active |= IFM_HDX; 1714 1715 MY_UNLOCK(sc); 1716 return; 1717 } 1718 ability = my_phy_readreg(sc, PHY_LPAR); 1719 advert = my_phy_readreg(sc, PHY_ANAR); 1720 1721 #if 0 /* this version did not support 1000M, */ 1722 if (sc->my_pinfo->my_vid = MarvellPHYID0) { 1723 ability2 = my_phy_readreg(sc, PHY_1000SR); 1724 if (ability2 & PHY_1000SR_1000BTXFULL) { 1725 advert = 0; 1726 ability = 0; 1727 ifmr->ifm_active = IFM_ETHER|IFM_1000_T|IFM_FDX; 1728 } else if (ability & PHY_1000SR_1000BTXHALF) { 1729 advert = 0; 1730 ability = 0; 1731 ifmr->ifm_active = IFM_ETHER|IFM_1000_T|IFM_HDX; 1732 } 1733 } 1734 #endif 1735 if (advert & PHY_ANAR_100BT4 && ability & PHY_ANAR_100BT4) 1736 ifmr->ifm_active = IFM_ETHER | IFM_100_T4; 1737 else if (advert & PHY_ANAR_100BTXFULL && ability & PHY_ANAR_100BTXFULL) 1738 ifmr->ifm_active = IFM_ETHER | IFM_100_TX | IFM_FDX; 1739 else if (advert & PHY_ANAR_100BTXHALF && ability & PHY_ANAR_100BTXHALF) 1740 ifmr->ifm_active = IFM_ETHER | IFM_100_TX | IFM_HDX; 1741 else if (advert & PHY_ANAR_10BTFULL && ability & PHY_ANAR_10BTFULL) 1742 ifmr->ifm_active = IFM_ETHER | IFM_10_T | IFM_FDX; 1743 else if (advert & PHY_ANAR_10BTHALF && ability & PHY_ANAR_10BTHALF) 1744 ifmr->ifm_active = IFM_ETHER | IFM_10_T | IFM_HDX; 1745 MY_UNLOCK(sc); 1746 return; 1747 } 1748 1749 static int 1750 my_ioctl(struct ifnet * ifp, u_long command, caddr_t data) 1751 { 1752 struct my_softc *sc = ifp->if_softc; 1753 struct ifreq *ifr = (struct ifreq *) data; 1754 int s, error = 0; 1755 1756 s = splimp(); 1757 MY_LOCK(sc); 1758 switch (command) { 1759 case SIOCSIFFLAGS: 1760 if (ifp->if_flags & IFF_UP) 1761 my_init(sc); 1762 else if (ifp->if_flags & IFF_RUNNING) 1763 my_stop(sc); 1764 error = 0; 1765 break; 1766 case SIOCADDMULTI: 1767 case SIOCDELMULTI: 1768 my_setmulti(sc); 1769 error = 0; 1770 break; 1771 case SIOCGIFMEDIA: 1772 case SIOCSIFMEDIA: 1773 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command); 1774 break; 1775 default: 1776 error = ether_ioctl(ifp, command, data); 1777 break; 1778 } 1779 MY_UNLOCK(sc); 1780 (void)splx(s); 1781 return (error); 1782 } 1783 1784 static void 1785 my_watchdog(struct ifnet * ifp) 1786 { 1787 struct my_softc *sc; 1788 1789 sc = ifp->if_softc; 1790 MY_LOCK(sc); 1791 if (sc->my_autoneg) { 1792 my_autoneg_mii(sc, MY_FLAG_DELAYTIMEO, 1); 1793 MY_UNLOCK(sc); 1794 return; 1795 } 1796 ifp->if_oerrors++; 1797 printf("my%d: watchdog timeout\n", sc->my_unit); 1798 if (!(my_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT)) 1799 printf("my%d: no carrier - transceiver cable problem?\n", 1800 sc->my_unit); 1801 my_stop(sc); 1802 my_reset(sc); 1803 my_init(sc); 1804 if (ifp->if_snd.ifq_head != NULL) 1805 my_start(ifp); 1806 MY_LOCK(sc); 1807 return; 1808 } 1809 1810 1811 /* 1812 * Stop the adapter and free any mbufs allocated to the RX and TX lists. 1813 */ 1814 static void 1815 my_stop(struct my_softc * sc) 1816 { 1817 register int i; 1818 struct ifnet *ifp; 1819 1820 MY_LOCK(sc); 1821 ifp = &sc->arpcom.ac_if; 1822 ifp->if_timer = 0; 1823 1824 MY_CLRBIT(sc, MY_TCRRCR, (MY_RE | MY_TE)); 1825 CSR_WRITE_4(sc, MY_IMR, 0x00000000); 1826 CSR_WRITE_4(sc, MY_TXLBA, 0x00000000); 1827 CSR_WRITE_4(sc, MY_RXLBA, 0x00000000); 1828 1829 /* 1830 * Free data in the RX lists. 1831 */ 1832 for (i = 0; i < MY_RX_LIST_CNT; i++) { 1833 if (sc->my_cdata.my_rx_chain[i].my_mbuf != NULL) { 1834 m_freem(sc->my_cdata.my_rx_chain[i].my_mbuf); 1835 sc->my_cdata.my_rx_chain[i].my_mbuf = NULL; 1836 } 1837 } 1838 bzero((char *)&sc->my_ldata->my_rx_list, 1839 sizeof(sc->my_ldata->my_rx_list)); 1840 /* 1841 * Free the TX list buffers. 1842 */ 1843 for (i = 0; i < MY_TX_LIST_CNT; i++) { 1844 if (sc->my_cdata.my_tx_chain[i].my_mbuf != NULL) { 1845 m_freem(sc->my_cdata.my_tx_chain[i].my_mbuf); 1846 sc->my_cdata.my_tx_chain[i].my_mbuf = NULL; 1847 } 1848 } 1849 bzero((char *)&sc->my_ldata->my_tx_list, 1850 sizeof(sc->my_ldata->my_tx_list)); 1851 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1852 MY_UNLOCK(sc); 1853 return; 1854 } 1855 1856 /* 1857 * Stop all chip I/O so that the kernel's probe routines don't get confused 1858 * by errant DMAs when rebooting. 1859 */ 1860 static void 1861 my_shutdown(device_t dev) 1862 { 1863 struct my_softc *sc; 1864 1865 sc = device_get_softc(dev); 1866 my_stop(sc); 1867 return; 1868 } 1869