1 /* $NetBSD: dp8390.c,v 1.49 2001/11/13 13:14:36 lukem Exp $ */ 2 3 /* 4 * Device driver for National Semiconductor DS8390/WD83C690 based ethernet 5 * adapters. 6 * 7 * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved. 8 * 9 * Copyright (C) 1993, David Greenman. This software may be used, modified, 10 * copied, distributed, and sold, in both source and binary form provided that 11 * the above copyright and these terms are retained. Under no circumstances is 12 * the author responsible for the proper functioning of this software, nor does 13 * the author assume any responsibility for damages incurred with its use. 14 */ 15 16 #include <sys/cdefs.h> 17 __KERNEL_RCSID(0, "$NetBSD: dp8390.c,v 1.49 2001/11/13 13:14:36 lukem Exp $"); 18 19 #include "opt_ipkdb.h" 20 #include "opt_inet.h" 21 #include "opt_ns.h" 22 #include "bpfilter.h" 23 #include "rnd.h" 24 25 #include <sys/param.h> 26 #include <sys/systm.h> 27 #include <sys/device.h> 28 #include <sys/errno.h> 29 #include <sys/ioctl.h> 30 #include <sys/mbuf.h> 31 #include <sys/socket.h> 32 #include <sys/syslog.h> 33 34 #if NRND > 0 35 #include <sys/rnd.h> 36 #endif 37 38 #include <net/if.h> 39 #include <net/if_dl.h> 40 #include <net/if_types.h> 41 #include <net/if_media.h> 42 #include <net/if_ether.h> 43 44 #ifdef INET 45 #include <netinet/in.h> 46 #include <netinet/in_systm.h> 47 #include <netinet/in_var.h> 48 #include <netinet/ip.h> 49 #include <netinet/if_inarp.h> 50 #endif 51 52 #ifdef NS 53 #include <netns/ns.h> 54 #include <netns/ns_if.h> 55 #endif 56 57 #if NBPFILTER > 0 58 #include <net/bpf.h> 59 #include <net/bpfdesc.h> 60 #endif 61 62 #include <machine/bus.h> 63 64 #ifdef IPKDB_DP8390 65 #include <ipkdb/ipkdb.h> 66 #endif 67 68 #include <dev/ic/dp8390reg.h> 69 #include <dev/ic/dp8390var.h> 70 71 #ifdef DEBUG 72 #define __inline__ /* XXX for debugging porpoises */ 73 #endif 74 75 static __inline__ void dp8390_xmit __P((struct dp8390_softc *)); 76 77 static __inline__ void dp8390_read_hdr __P((struct dp8390_softc *, 78 int, struct dp8390_ring *)); 79 static __inline__ int dp8390_ring_copy __P((struct dp8390_softc *, 80 int, caddr_t, u_short)); 81 static __inline__ int dp8390_write_mbuf __P((struct dp8390_softc *, 82 struct mbuf *, int)); 83 84 static int dp8390_test_mem __P((struct dp8390_softc *)); 85 86 int dp8390_debug = 0; 87 88 /* 89 * Standard media init routine for the dp8390. 90 */ 91 void 92 dp8390_media_init(struct dp8390_softc *sc) 93 { 94 95 ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); 96 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 97 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 98 } 99 100 /* 101 * Do bus-independent setup. 102 */ 103 int 104 dp8390_config(sc) 105 struct dp8390_softc *sc; 106 { 107 struct ifnet *ifp = &sc->sc_ec.ec_if; 108 int rv; 109 110 rv = 1; 111 112 if (!sc->test_mem) 113 sc->test_mem = dp8390_test_mem; 114 115 /* Allocate one xmit buffer if < 16k, two buffers otherwise. */ 116 if ((sc->mem_size < 16384) || 117 (sc->sc_flags & DP8390_NO_MULTI_BUFFERING)) 118 sc->txb_cnt = 1; 119 else if (sc->mem_size < 8192 * 3) 120 sc->txb_cnt = 2; 121 else 122 sc->txb_cnt = 3; 123 124 sc->tx_page_start = sc->mem_start >> ED_PAGE_SHIFT; 125 sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; 126 sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); 127 sc->mem_ring = sc->mem_start + (sc->rec_page_start << ED_PAGE_SHIFT); 128 sc->mem_end = sc->mem_start + sc->mem_size; 129 130 /* Now zero memory and verify that it is clear. */ 131 if ((*sc->test_mem)(sc)) 132 goto out; 133 134 /* Set interface to stopped condition (reset). */ 135 dp8390_stop(sc); 136 137 /* Initialize ifnet structure. */ 138 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 139 ifp->if_softc = sc; 140 ifp->if_start = dp8390_start; 141 ifp->if_ioctl = dp8390_ioctl; 142 if (!ifp->if_watchdog) 143 ifp->if_watchdog = dp8390_watchdog; 144 ifp->if_flags = 145 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 146 IFQ_SET_READY(&ifp->if_snd); 147 148 /* Print additional info when attached. */ 149 printf("%s: Ethernet address %s\n", sc->sc_dev.dv_xname, 150 ether_sprintf(sc->sc_enaddr)); 151 152 /* Initialize media goo. */ 153 (*sc->sc_media_init)(sc); 154 155 /* 156 * We can support 802.1Q VLAN-sized frames. 157 */ 158 sc->sc_ec.ec_capabilities |= ETHERCAP_VLAN_MTU; 159 160 /* Attach the interface. */ 161 if_attach(ifp); 162 ether_ifattach(ifp, sc->sc_enaddr); 163 164 #if NRND > 0 165 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 166 RND_TYPE_NET, 0); 167 #endif 168 169 /* The attach is successful. */ 170 sc->sc_flags |= DP8390_ATTACHED; 171 172 rv = 0; 173 out: 174 return (rv); 175 } 176 177 /* 178 * Media change callback. 179 */ 180 int 181 dp8390_mediachange(ifp) 182 struct ifnet *ifp; 183 { 184 struct dp8390_softc *sc = ifp->if_softc; 185 186 if (sc->sc_mediachange) 187 return ((*sc->sc_mediachange)(sc)); 188 return (0); 189 } 190 191 /* 192 * Media status callback. 193 */ 194 void 195 dp8390_mediastatus(ifp, ifmr) 196 struct ifnet *ifp; 197 struct ifmediareq *ifmr; 198 { 199 struct dp8390_softc *sc = ifp->if_softc; 200 201 if (sc->sc_enabled == 0) { 202 ifmr->ifm_active = IFM_ETHER | IFM_NONE; 203 ifmr->ifm_status = 0; 204 return; 205 } 206 207 if (sc->sc_mediastatus) 208 (*sc->sc_mediastatus)(sc, ifmr); 209 } 210 211 /* 212 * Reset interface. 213 */ 214 void 215 dp8390_reset(sc) 216 struct dp8390_softc *sc; 217 { 218 int s; 219 220 s = splnet(); 221 dp8390_stop(sc); 222 dp8390_init(sc); 223 splx(s); 224 } 225 226 /* 227 * Take interface offline. 228 */ 229 void 230 dp8390_stop(sc) 231 struct dp8390_softc *sc; 232 { 233 bus_space_tag_t regt = sc->sc_regt; 234 bus_space_handle_t regh = sc->sc_regh; 235 int n = 5000; 236 237 /* Stop everything on the interface, and select page 0 registers. */ 238 NIC_BARRIER(regt, regh); 239 NIC_PUT(regt, regh, ED_P0_CR, 240 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 241 NIC_BARRIER(regt, regh); 242 243 /* 244 * Wait for interface to enter stopped state, but limit # of checks to 245 * 'n' (about 5ms). It shouldn't even take 5us on modern DS8390's, but 246 * just in case it's an old one. 247 */ 248 while (((NIC_GET(regt, regh, 249 ED_P0_ISR) & ED_ISR_RST) == 0) && --n) 250 DELAY(1); 251 252 if (sc->stop_card != NULL) 253 (*sc->stop_card)(sc); 254 } 255 256 /* 257 * Device timeout/watchdog routine. Entered if the device neglects to generate 258 * an interrupt after a transmit has been started on it. 259 */ 260 261 void 262 dp8390_watchdog(ifp) 263 struct ifnet *ifp; 264 { 265 struct dp8390_softc *sc = ifp->if_softc; 266 267 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 268 ++sc->sc_ec.ec_if.if_oerrors; 269 270 dp8390_reset(sc); 271 } 272 273 /* 274 * Initialize device. 275 */ 276 void 277 dp8390_init(sc) 278 struct dp8390_softc *sc; 279 { 280 bus_space_tag_t regt = sc->sc_regt; 281 bus_space_handle_t regh = sc->sc_regh; 282 struct ifnet *ifp = &sc->sc_ec.ec_if; 283 u_int8_t mcaf[8]; 284 int i; 285 286 /* 287 * Initialize the NIC in the exact order outlined in the NS manual. 288 * This init procedure is "mandatory"...don't change what or when 289 * things happen. 290 */ 291 292 /* Reset transmitter flags. */ 293 ifp->if_timer = 0; 294 295 sc->txb_inuse = 0; 296 sc->txb_new = 0; 297 sc->txb_next_tx = 0; 298 299 /* Set interface for page 0, remote DMA complete, stopped. */ 300 NIC_BARRIER(regt, regh); 301 NIC_PUT(regt, regh, ED_P0_CR, 302 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 303 NIC_BARRIER(regt, regh); 304 305 if (sc->dcr_reg & ED_DCR_LS) { 306 NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); 307 } else { 308 /* 309 * Set FIFO threshold to 8, No auto-init Remote DMA, byte 310 * order=80x86, byte-wide DMA xfers, 311 */ 312 NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 313 } 314 315 /* Clear remote byte count registers. */ 316 NIC_PUT(regt, regh, ED_P0_RBCR0, 0); 317 NIC_PUT(regt, regh, ED_P0_RBCR1, 0); 318 319 /* Tell RCR to do nothing for now. */ 320 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); 321 322 /* Place NIC in internal loopback mode. */ 323 NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); 324 325 /* Set lower bits of byte addressable framing to 0. */ 326 if (sc->is790) 327 NIC_PUT(regt, regh, 0x09, 0); 328 329 /* Initialize receive buffer ring. */ 330 NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); 331 NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); 332 NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); 333 334 /* 335 * Enable the following interrupts: receive/transmit complete, 336 * receive/transmit error, and Receiver OverWrite. 337 * 338 * Counter overflow and Remote DMA complete are *not* enabled. 339 */ 340 NIC_PUT(regt, regh, ED_P0_IMR, 341 ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | 342 ED_IMR_OVWE); 343 344 /* 345 * Clear all interrupts. A '1' in each bit position clears the 346 * corresponding flag. 347 */ 348 NIC_PUT(regt, regh, ED_P0_ISR, 0xff); 349 350 /* Program command register for page 1. */ 351 NIC_BARRIER(regt, regh); 352 NIC_PUT(regt, regh, ED_P0_CR, 353 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); 354 NIC_BARRIER(regt, regh); 355 356 /* Copy out our station address. */ 357 for (i = 0; i < ETHER_ADDR_LEN; ++i) 358 NIC_PUT(regt, regh, ED_P1_PAR0 + i, 359 LLADDR(ifp->if_sadl)[i]); 360 361 /* Set multicast filter on chip. */ 362 dp8390_getmcaf(&sc->sc_ec, mcaf); 363 for (i = 0; i < 8; i++) 364 NIC_PUT(regt, regh, ED_P1_MAR0 + i, mcaf[i]); 365 366 /* 367 * Set current page pointer to one page after the boundary pointer, as 368 * recommended in the National manual. 369 */ 370 sc->next_packet = sc->rec_page_start + 1; 371 NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); 372 373 /* Program command register for page 0. */ 374 NIC_BARRIER(regt, regh); 375 NIC_PUT(regt, regh, ED_P1_CR, 376 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 377 NIC_BARRIER(regt, regh); 378 379 /* Accept broadcast and multicast packets by default. */ 380 i = ED_RCR_AB | ED_RCR_AM | sc->rcr_proto; 381 if (ifp->if_flags & IFF_PROMISC) { 382 /* 383 * Set promiscuous mode. Multicast filter was set earlier so 384 * that we should receive all multicast packets. 385 */ 386 i |= ED_RCR_PRO | ED_RCR_AR | ED_RCR_SEP; 387 } 388 NIC_PUT(regt, regh, ED_P0_RCR, i); 389 390 /* Take interface out of loopback. */ 391 NIC_PUT(regt, regh, ED_P0_TCR, 0); 392 393 /* Do any card-specific initialization, if applicable. */ 394 if (sc->init_card) 395 (*sc->init_card)(sc); 396 397 /* Fire up the interface. */ 398 NIC_BARRIER(regt, regh); 399 NIC_PUT(regt, regh, ED_P0_CR, 400 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 401 402 /* Set 'running' flag, and clear output active flag. */ 403 ifp->if_flags |= IFF_RUNNING; 404 ifp->if_flags &= ~IFF_OACTIVE; 405 406 /* ...and attempt to start output. */ 407 dp8390_start(ifp); 408 } 409 410 /* 411 * This routine actually starts the transmission on the interface. 412 */ 413 static __inline__ void 414 dp8390_xmit(sc) 415 struct dp8390_softc *sc; 416 { 417 bus_space_tag_t regt = sc->sc_regt; 418 bus_space_handle_t regh = sc->sc_regh; 419 struct ifnet *ifp = &sc->sc_ec.ec_if; 420 u_short len; 421 422 #ifdef DIAGNOSTIC 423 if ((sc->txb_next_tx + sc->txb_inuse) % sc->txb_cnt != sc->txb_new) 424 panic("dp8390_xmit: desync, next_tx=%d inuse=%d cnt=%d new=%d", 425 sc->txb_next_tx, sc->txb_inuse, sc->txb_cnt, sc->txb_new); 426 427 if (sc->txb_inuse == 0) 428 panic("dp8390_xmit: no packets to xmit\n"); 429 #endif 430 431 len = sc->txb_len[sc->txb_next_tx]; 432 433 /* Set NIC for page 0 register access. */ 434 NIC_BARRIER(regt, regh); 435 NIC_PUT(regt, regh, ED_P0_CR, 436 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 437 NIC_BARRIER(regt, regh); 438 439 /* Set TX buffer start page. */ 440 NIC_PUT(regt, regh, ED_P0_TPSR, sc->tx_page_start + 441 sc->txb_next_tx * ED_TXBUF_SIZE); 442 443 /* Set TX length. */ 444 NIC_PUT(regt, regh, ED_P0_TBCR0, len); 445 NIC_PUT(regt, regh, ED_P0_TBCR1, len >> 8); 446 447 /* Set page 0, remote DMA complete, transmit packet, and *start*. */ 448 NIC_BARRIER(regt, regh); 449 NIC_PUT(regt, regh, ED_P0_CR, 450 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_TXP | ED_CR_STA); 451 452 /* Point to next transmit buffer slot and wrap if necessary. */ 453 if (++sc->txb_next_tx == sc->txb_cnt) 454 sc->txb_next_tx = 0; 455 456 /* Set a timer just in case we never hear from the board again. */ 457 ifp->if_timer = 2; 458 } 459 460 /* 461 * Start output on interface. 462 * We make two assumptions here: 463 * 1) that the current priority is set to splnet _before_ this code 464 * is called *and* is returned to the appropriate priority after 465 * return 466 * 2) that the IFF_OACTIVE flag is checked before this code is called 467 * (i.e. that the output part of the interface is idle) 468 */ 469 void 470 dp8390_start(ifp) 471 struct ifnet *ifp; 472 { 473 struct dp8390_softc *sc = ifp->if_softc; 474 struct mbuf *m0; 475 int buffer; 476 int len; 477 478 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 479 return; 480 481 outloop: 482 /* See if there is room to put another packet in the buffer. */ 483 if (sc->txb_inuse == sc->txb_cnt) { 484 /* No room. Indicate this to the outside world and exit. */ 485 ifp->if_flags |= IFF_OACTIVE; 486 return; 487 } 488 IFQ_DEQUEUE(&ifp->if_snd, m0); 489 if (m0 == 0) 490 return; 491 492 /* We need to use m->m_pkthdr.len, so require the header */ 493 if ((m0->m_flags & M_PKTHDR) == 0) 494 panic("dp8390_start: no header mbuf"); 495 496 #if NBPFILTER > 0 497 /* Tap off here if there is a BPF listener. */ 498 if (ifp->if_bpf) 499 bpf_mtap(ifp->if_bpf, m0); 500 #endif 501 502 /* txb_new points to next open buffer slot. */ 503 buffer = sc->mem_start + 504 ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 505 506 if (sc->write_mbuf) 507 len = (*sc->write_mbuf)(sc, m0, buffer); 508 else 509 len = dp8390_write_mbuf(sc, m0, buffer); 510 511 m_freem(m0); 512 sc->txb_len[sc->txb_new] = max(len, ETHER_MIN_LEN - ETHER_CRC_LEN); 513 514 /* Point to next buffer slot and wrap if necessary. */ 515 if (++sc->txb_new == sc->txb_cnt) 516 sc->txb_new = 0; 517 518 /* Start the first packet transmitting. */ 519 if (sc->txb_inuse++ == 0) 520 dp8390_xmit(sc); 521 522 /* Loop back to the top to possibly buffer more packets. */ 523 goto outloop; 524 } 525 526 /* 527 * Ethernet interface receiver interrupt. 528 */ 529 void 530 dp8390_rint(sc) 531 struct dp8390_softc *sc; 532 { 533 bus_space_tag_t regt = sc->sc_regt; 534 bus_space_handle_t regh = sc->sc_regh; 535 struct dp8390_ring packet_hdr; 536 int packet_ptr; 537 u_short len; 538 u_char boundary, current; 539 u_char nlen; 540 541 loop: 542 /* Set NIC to page 1 registers to get 'current' pointer. */ 543 NIC_BARRIER(regt, regh); 544 NIC_PUT(regt, regh, ED_P0_CR, 545 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 546 NIC_BARRIER(regt, regh); 547 548 /* 549 * 'sc->next_packet' is the logical beginning of the ring-buffer - i.e. 550 * it points to where new data has been buffered. The 'CURR' (current) 551 * register points to the logical end of the ring-buffer - i.e. it 552 * points to where additional new data will be added. We loop here 553 * until the logical beginning equals the logical end (or in other 554 * words, until the ring-buffer is empty). 555 */ 556 current = NIC_GET(regt, regh, ED_P1_CURR); 557 if (sc->next_packet == current) 558 return; 559 560 /* Set NIC to page 0 registers to update boundary register. */ 561 NIC_BARRIER(regt, regh); 562 NIC_PUT(regt, regh, ED_P1_CR, 563 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 564 NIC_BARRIER(regt, regh); 565 566 do { 567 /* Get pointer to this buffer's header structure. */ 568 packet_ptr = sc->mem_ring + 569 ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); 570 571 if (sc->read_hdr) 572 (*sc->read_hdr)(sc, packet_ptr, &packet_hdr); 573 else 574 dp8390_read_hdr(sc, packet_ptr, &packet_hdr); 575 len = packet_hdr.count; 576 577 /* 578 * Try do deal with old, buggy chips that sometimes duplicate 579 * the low byte of the length into the high byte. We do this 580 * by simply ignoring the high byte of the length and always 581 * recalculating it. 582 * 583 * NOTE: sc->next_packet is pointing at the current packet. 584 */ 585 if (packet_hdr.next_packet >= sc->next_packet) 586 nlen = (packet_hdr.next_packet - sc->next_packet); 587 else 588 nlen = ((packet_hdr.next_packet - sc->rec_page_start) + 589 (sc->rec_page_stop - sc->next_packet)); 590 --nlen; 591 if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) 592 --nlen; 593 len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); 594 #ifdef DIAGNOSTIC 595 if (len != packet_hdr.count) { 596 printf("%s: length does not match " 597 "next packet pointer\n", sc->sc_dev.dv_xname); 598 printf("%s: len %04x nlen %04x start %02x " 599 "first %02x curr %02x next %02x stop %02x\n", 600 sc->sc_dev.dv_xname, packet_hdr.count, len, 601 sc->rec_page_start, sc->next_packet, current, 602 packet_hdr.next_packet, sc->rec_page_stop); 603 } 604 #endif 605 606 /* 607 * Be fairly liberal about what we allow as a "reasonable" 608 * length so that a [crufty] packet will make it to BPF (and 609 * can thus be analyzed). Note that all that is really 610 * important is that we have a length that will fit into one 611 * mbuf cluster or less; the upper layer protocols can then 612 * figure out the length from their own length field(s). 613 */ 614 if (len <= MCLBYTES && 615 packet_hdr.next_packet >= sc->rec_page_start && 616 packet_hdr.next_packet < sc->rec_page_stop) { 617 /* Go get packet. */ 618 dp8390_read(sc, 619 packet_ptr + sizeof(struct dp8390_ring), 620 len - sizeof(struct dp8390_ring)); 621 ++sc->sc_ec.ec_if.if_ipackets; 622 } else { 623 /* Really BAD. The ring pointers are corrupted. */ 624 log(LOG_ERR, "%s: NIC memory corrupt - " 625 "invalid packet length %d\n", 626 sc->sc_dev.dv_xname, len); 627 ++sc->sc_ec.ec_if.if_ierrors; 628 dp8390_reset(sc); 629 return; 630 } 631 632 /* Update next packet pointer. */ 633 sc->next_packet = packet_hdr.next_packet; 634 635 /* 636 * Update NIC boundary pointer - being careful to keep it one 637 * buffer behind (as recommended by NS databook). 638 */ 639 boundary = sc->next_packet - 1; 640 if (boundary < sc->rec_page_start) 641 boundary = sc->rec_page_stop - 1; 642 NIC_PUT(regt, regh, ED_P0_BNRY, boundary); 643 } while (sc->next_packet != current); 644 645 goto loop; 646 } 647 648 /* Ethernet interface interrupt processor. */ 649 int 650 dp8390_intr(arg) 651 void *arg; 652 { 653 struct dp8390_softc *sc = (struct dp8390_softc *)arg; 654 bus_space_tag_t regt = sc->sc_regt; 655 bus_space_handle_t regh = sc->sc_regh; 656 struct ifnet *ifp = &sc->sc_ec.ec_if; 657 u_char isr; 658 #if NRND > 0 659 u_char rndisr; 660 #endif 661 662 if (sc->sc_enabled == 0 || 663 (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 664 return (0); 665 666 /* Set NIC to page 0 registers. */ 667 NIC_BARRIER(regt, regh); 668 NIC_PUT(regt, regh, ED_P0_CR, 669 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 670 NIC_BARRIER(regt, regh); 671 672 isr = NIC_GET(regt, regh, ED_P0_ISR); 673 if (!isr) 674 return (0); 675 676 #if NRND > 0 677 rndisr = isr; 678 #endif 679 680 /* Loop until there are no more new interrupts. */ 681 for (;;) { 682 /* 683 * Reset all the bits that we are 'acknowledging' by writing a 684 * '1' to each bit position that was set. 685 * (Writing a '1' *clears* the bit.) 686 */ 687 NIC_PUT(regt, regh, ED_P0_ISR, isr); 688 689 /* Work around for AX88190 bug */ 690 if ((sc->sc_flags & DP8390_DO_AX88190_WORKAROUND) != 0) 691 while ((NIC_GET(regt, regh, ED_P0_ISR) & isr) != 0) { 692 NIC_PUT(regt, regh, ED_P0_ISR, 0); 693 NIC_PUT(regt, regh, ED_P0_ISR, isr); 694 } 695 696 /* 697 * Handle transmitter interrupts. Handle these first because 698 * the receiver will reset the board under some conditions. 699 * 700 * If the chip was reset while a packet was transmitting, it 701 * may still deliver a TX interrupt. In this case, just ignore 702 * the interrupt. 703 */ 704 if (isr & (ED_ISR_PTX | ED_ISR_TXE) && 705 sc->txb_inuse != 0) { 706 u_char collisions = 707 NIC_GET(regt, regh, ED_P0_NCR) & 0x0f; 708 709 /* 710 * Check for transmit error. If a TX completed with an 711 * error, we end up throwing the packet away. Really 712 * the only error that is possible is excessive 713 * collisions, and in this case it is best to allow the 714 * automatic mechanisms of TCP to backoff the flow. Of 715 * course, with UDP we're screwed, but this is expected 716 * when a network is heavily loaded. 717 */ 718 if (isr & ED_ISR_TXE) { 719 /* 720 * Excessive collisions (16). 721 */ 722 if ((NIC_GET(regt, regh, ED_P0_TSR) 723 & ED_TSR_ABT) && (collisions == 0)) { 724 /* 725 * When collisions total 16, the P0_NCR 726 * will indicate 0, and the TSR_ABT is 727 * set. 728 */ 729 collisions = 16; 730 } 731 732 /* Update output errors counter. */ 733 ++ifp->if_oerrors; 734 } else { 735 /* 736 * Throw away the non-error status bits. 737 * 738 * XXX 739 * It may be useful to detect loss of carrier 740 * and late collisions here. 741 */ 742 (void)NIC_GET(regt, regh, ED_P0_TSR); 743 744 /* 745 * Update total number of successfully 746 * transmitted packets. 747 */ 748 ++ifp->if_opackets; 749 } 750 751 /* Clear watchdog timer. */ 752 ifp->if_timer = 0; 753 ifp->if_flags &= ~IFF_OACTIVE; 754 755 /* 756 * Add in total number of collisions on last 757 * transmission. 758 */ 759 ifp->if_collisions += collisions; 760 761 /* 762 * Decrement buffer in-use count if not zero (can only 763 * be zero if a transmitter interrupt occurred while not 764 * actually transmitting). 765 * If data is ready to transmit, start it transmitting, 766 * otherwise defer until after handling receiver. 767 */ 768 if (--sc->txb_inuse != 0) 769 dp8390_xmit(sc); 770 } 771 772 /* Handle receiver interrupts. */ 773 if (isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) { 774 /* 775 * Overwrite warning. In order to make sure that a 776 * lockup of the local DMA hasn't occurred, we reset 777 * and re-init the NIC. The NSC manual suggests only a 778 * partial reset/re-init is necessary - but some chips 779 * seem to want more. The DMA lockup has been seen 780 * only with early rev chips - Methinks this bug was 781 * fixed in later revs. -DG 782 */ 783 if (isr & ED_ISR_OVW) { 784 ++ifp->if_ierrors; 785 #ifdef DIAGNOSTIC 786 log(LOG_WARNING, "%s: warning - receiver " 787 "ring buffer overrun\n", 788 sc->sc_dev.dv_xname); 789 #endif 790 /* Stop/reset/re-init NIC. */ 791 dp8390_reset(sc); 792 } else { 793 /* 794 * Receiver Error. One or more of: CRC error, 795 * frame alignment error FIFO overrun, or 796 * missed packet. 797 */ 798 if (isr & ED_ISR_RXE) { 799 ++ifp->if_ierrors; 800 #ifdef DEBUG 801 if (dp8390_debug) { 802 printf("%s: receive error %x\n", 803 sc->sc_dev.dv_xname, 804 NIC_GET(regt, regh, 805 ED_P0_RSR)); 806 } 807 #endif 808 } 809 810 /* 811 * Go get the packet(s) 812 * XXX - Doing this on an error is dubious 813 * because there shouldn't be any data to get 814 * (we've configured the interface to not 815 * accept packets with errors). 816 */ 817 if (sc->recv_int) 818 (*sc->recv_int)(sc); 819 else 820 dp8390_rint(sc); 821 } 822 } 823 824 /* 825 * If it looks like the transmitter can take more data, attempt 826 * to start output on the interface. This is done after 827 * handling the receiver to give the receiver priority. 828 */ 829 dp8390_start(ifp); 830 831 /* 832 * Return NIC CR to standard state: page 0, remote DMA 833 * complete, start (toggling the TXP bit off, even if was just 834 * set in the transmit routine, is *okay* - it is 'edge' 835 * triggered from low to high). 836 */ 837 NIC_BARRIER(regt, regh); 838 NIC_PUT(regt, regh, ED_P0_CR, 839 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 840 NIC_BARRIER(regt, regh); 841 842 /* 843 * If the Network Talley Counters overflow, read them to reset 844 * them. It appears that old 8390's won't clear the ISR flag 845 * otherwise - resulting in an infinite loop. 846 */ 847 if (isr & ED_ISR_CNT) { 848 (void)NIC_GET(regt, regh, ED_P0_CNTR0); 849 (void)NIC_GET(regt, regh, ED_P0_CNTR1); 850 (void)NIC_GET(regt, regh, ED_P0_CNTR2); 851 } 852 853 isr = NIC_GET(regt, regh, ED_P0_ISR); 854 if (!isr) 855 goto out; 856 } 857 858 out: 859 #if NRND > 0 860 rnd_add_uint32(&sc->rnd_source, rndisr); 861 #endif 862 return (1); 863 } 864 865 /* 866 * Process an ioctl request. This code needs some work - it looks pretty ugly. 867 */ 868 int 869 dp8390_ioctl(ifp, cmd, data) 870 struct ifnet *ifp; 871 u_long cmd; 872 caddr_t data; 873 { 874 struct dp8390_softc *sc = ifp->if_softc; 875 struct ifaddr *ifa = (struct ifaddr *) data; 876 struct ifreq *ifr = (struct ifreq *) data; 877 int s, error = 0; 878 879 s = splnet(); 880 881 switch (cmd) { 882 883 case SIOCSIFADDR: 884 if ((error = dp8390_enable(sc)) != 0) 885 break; 886 ifp->if_flags |= IFF_UP; 887 888 switch (ifa->ifa_addr->sa_family) { 889 #ifdef INET 890 case AF_INET: 891 dp8390_init(sc); 892 arp_ifinit(ifp, ifa); 893 break; 894 #endif 895 #ifdef NS 896 /* XXX - This code is probably wrong. */ 897 case AF_NS: 898 { 899 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 900 901 if (ns_nullhost(*ina)) 902 ina->x_host = 903 *(union ns_host *)LLADDR(ifp->if_sadl); 904 else 905 memcpy(LLADDR(ifp->if_sadl), 906 ina->x_host.c_host, ETHER_ADDR_LEN); 907 /* Set new address. */ 908 dp8390_init(sc); 909 break; 910 } 911 #endif 912 default: 913 dp8390_init(sc); 914 break; 915 } 916 break; 917 918 case SIOCSIFFLAGS: 919 if ((ifp->if_flags & IFF_UP) == 0 && 920 (ifp->if_flags & IFF_RUNNING) != 0) { 921 /* 922 * If interface is marked down and it is running, then 923 * stop it. 924 */ 925 dp8390_stop(sc); 926 ifp->if_flags &= ~IFF_RUNNING; 927 dp8390_disable(sc); 928 } else if ((ifp->if_flags & IFF_UP) != 0 && 929 (ifp->if_flags & IFF_RUNNING) == 0) { 930 /* 931 * If interface is marked up and it is stopped, then 932 * start it. 933 */ 934 if ((error = dp8390_enable(sc)) != 0) 935 break; 936 dp8390_init(sc); 937 } else if ((ifp->if_flags & IFF_UP) != 0) { 938 /* 939 * Reset the interface to pick up changes in any other 940 * flags that affect hardware registers. 941 */ 942 dp8390_stop(sc); 943 dp8390_init(sc); 944 } 945 break; 946 947 case SIOCADDMULTI: 948 case SIOCDELMULTI: 949 if (sc->sc_enabled == 0) { 950 error = EIO; 951 break; 952 } 953 954 /* Update our multicast list. */ 955 error = (cmd == SIOCADDMULTI) ? 956 ether_addmulti(ifr, &sc->sc_ec) : 957 ether_delmulti(ifr, &sc->sc_ec); 958 959 if (error == ENETRESET) { 960 /* 961 * Multicast list has changed; set the hardware filter 962 * accordingly. 963 */ 964 dp8390_stop(sc); /* XXX for ds_setmcaf? */ 965 dp8390_init(sc); 966 error = 0; 967 } 968 break; 969 970 case SIOCGIFMEDIA: 971 case SIOCSIFMEDIA: 972 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 973 break; 974 975 default: 976 error = EINVAL; 977 break; 978 } 979 980 splx(s); 981 return (error); 982 } 983 984 /* 985 * Retrieve packet from buffer memory and send to the next level up via 986 * ether_input(). If there is a BPF listener, give a copy to BPF, too. 987 */ 988 void 989 dp8390_read(sc, buf, len) 990 struct dp8390_softc *sc; 991 int buf; 992 u_short len; 993 { 994 struct ifnet *ifp = &sc->sc_ec.ec_if; 995 struct mbuf *m; 996 997 /* Pull packet off interface. */ 998 m = dp8390_get(sc, buf, len); 999 if (m == 0) { 1000 ifp->if_ierrors++; 1001 return; 1002 } 1003 1004 ifp->if_ipackets++; 1005 1006 #if NBPFILTER > 0 1007 /* 1008 * Check if there's a BPF listener on this interface. 1009 * If so, hand off the raw packet to bpf. 1010 */ 1011 if (ifp->if_bpf) 1012 bpf_mtap(ifp->if_bpf, m); 1013 #endif 1014 1015 (*ifp->if_input)(ifp, m); 1016 } 1017 1018 1019 /* 1020 * Supporting routines. 1021 */ 1022 1023 /* 1024 * Compute the multicast address filter from the list of multicast addresses we 1025 * need to listen to. 1026 */ 1027 void 1028 dp8390_getmcaf(ec, af) 1029 struct ethercom *ec; 1030 u_int8_t *af; 1031 { 1032 struct ifnet *ifp = &ec->ec_if; 1033 struct ether_multi *enm; 1034 u_int32_t crc; 1035 int i; 1036 struct ether_multistep step; 1037 1038 /* 1039 * Set up multicast address filter by passing all multicast addresses 1040 * through a crc generator, and then using the high order 6 bits as an 1041 * index into the 64 bit logical address filter. The high order bit 1042 * selects the word, while the rest of the bits select the bit within 1043 * the word. 1044 */ 1045 1046 if (ifp->if_flags & IFF_PROMISC) { 1047 ifp->if_flags |= IFF_ALLMULTI; 1048 for (i = 0; i < 8; i++) 1049 af[i] = 0xff; 1050 return; 1051 } 1052 for (i = 0; i < 8; i++) 1053 af[i] = 0; 1054 ETHER_FIRST_MULTI(step, ec, enm); 1055 while (enm != NULL) { 1056 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 1057 sizeof(enm->enm_addrlo)) != 0) { 1058 /* 1059 * We must listen to a range of multicast addresses. 1060 * For now, just accept all multicasts, rather than 1061 * trying to set only those filter bits needed to match 1062 * the range. (At this time, the only use of address 1063 * ranges is for IP multicast routing, for which the 1064 * range is big enough to require all bits set.) 1065 */ 1066 ifp->if_flags |= IFF_ALLMULTI; 1067 for (i = 0; i < 8; i++) 1068 af[i] = 0xff; 1069 return; 1070 } 1071 1072 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 1073 1074 /* Just want the 6 most significant bits. */ 1075 crc >>= 26; 1076 1077 /* Turn on the corresponding bit in the filter. */ 1078 af[crc >> 3] |= 1 << (crc & 0x7); 1079 1080 ETHER_NEXT_MULTI(step, enm); 1081 } 1082 ifp->if_flags &= ~IFF_ALLMULTI; 1083 } 1084 1085 /* 1086 * Copy data from receive buffer to a new mbuf chain allocating mbufs 1087 * as needed. Return pointer to first mbuf in chain. 1088 * sc = dp8390 info (softc) 1089 * src = pointer in dp8390 ring buffer 1090 * total_len = amount of data to copy 1091 */ 1092 struct mbuf * 1093 dp8390_get(sc, src, total_len) 1094 struct dp8390_softc *sc; 1095 int src; 1096 u_short total_len; 1097 { 1098 struct ifnet *ifp = &sc->sc_ec.ec_if; 1099 struct mbuf *m, *m0, *newm; 1100 u_short len; 1101 1102 MGETHDR(m0, M_DONTWAIT, MT_DATA); 1103 if (m0 == 0) 1104 return (0); 1105 m0->m_pkthdr.rcvif = ifp; 1106 m0->m_pkthdr.len = total_len; 1107 len = MHLEN; 1108 m = m0; 1109 1110 while (total_len > 0) { 1111 if (total_len >= MINCLSIZE) { 1112 MCLGET(m, M_DONTWAIT); 1113 if ((m->m_flags & M_EXT) == 0) 1114 goto bad; 1115 len = MCLBYTES; 1116 } 1117 1118 /* 1119 * Make sure the data after the Ethernet header is aligned. 1120 */ 1121 if (m == m0) { 1122 caddr_t newdata = (caddr_t) 1123 ALIGN(m->m_data + sizeof(struct ether_header)) - 1124 sizeof(struct ether_header); 1125 len -= newdata - m->m_data; 1126 m->m_data = newdata; 1127 } 1128 1129 m->m_len = len = min(total_len, len); 1130 if (sc->ring_copy) 1131 src = (*sc->ring_copy)(sc, src, mtod(m, caddr_t), len); 1132 else 1133 src = dp8390_ring_copy(sc, src, mtod(m, caddr_t), len); 1134 1135 total_len -= len; 1136 if (total_len > 0) { 1137 MGET(newm, M_DONTWAIT, MT_DATA); 1138 if (newm == 0) 1139 goto bad; 1140 len = MLEN; 1141 m = m->m_next = newm; 1142 } 1143 } 1144 1145 return (m0); 1146 1147 bad: 1148 m_freem(m0); 1149 return (0); 1150 } 1151 1152 1153 /* 1154 * Default driver support functions. 1155 * 1156 * NOTE: all support functions assume 8-bit shared memory. 1157 */ 1158 /* 1159 * Zero NIC buffer memory and verify that it is clear. 1160 */ 1161 static int 1162 dp8390_test_mem(sc) 1163 struct dp8390_softc *sc; 1164 { 1165 bus_space_tag_t buft = sc->sc_buft; 1166 bus_space_handle_t bufh = sc->sc_bufh; 1167 int i; 1168 1169 bus_space_set_region_1(buft, bufh, sc->mem_start, 0, sc->mem_size); 1170 1171 for (i = 0; i < sc->mem_size; ++i) { 1172 if (bus_space_read_1(buft, bufh, sc->mem_start + i)) { 1173 printf(": failed to clear NIC buffer at offset %x - " 1174 "check configuration\n", (sc->mem_start + i)); 1175 return 1; 1176 } 1177 } 1178 1179 return 0; 1180 } 1181 1182 /* 1183 * Read a packet header from the ring, given the source offset. 1184 */ 1185 static __inline__ void 1186 dp8390_read_hdr(sc, src, hdrp) 1187 struct dp8390_softc *sc; 1188 int src; 1189 struct dp8390_ring *hdrp; 1190 { 1191 bus_space_tag_t buft = sc->sc_buft; 1192 bus_space_handle_t bufh = sc->sc_bufh; 1193 1194 /* 1195 * The byte count includes a 4 byte header that was added by 1196 * the NIC. 1197 */ 1198 hdrp->rsr = bus_space_read_1(buft, bufh, src); 1199 hdrp->next_packet = bus_space_read_1(buft, bufh, src + 1); 1200 hdrp->count = bus_space_read_1(buft, bufh, src + 2) | 1201 (bus_space_read_1(buft, bufh, src + 3) << 8); 1202 } 1203 1204 /* 1205 * Copy `amount' bytes from a packet in the ring buffer to a linear 1206 * destination buffer, given a source offset and destination address. 1207 * Takes into account ring-wrap. 1208 */ 1209 static __inline__ int 1210 dp8390_ring_copy(sc, src, dst, amount) 1211 struct dp8390_softc *sc; 1212 int src; 1213 caddr_t dst; 1214 u_short amount; 1215 { 1216 bus_space_tag_t buft = sc->sc_buft; 1217 bus_space_handle_t bufh = sc->sc_bufh; 1218 u_short tmp_amount; 1219 1220 /* Does copy wrap to lower addr in ring buffer? */ 1221 if (src + amount > sc->mem_end) { 1222 tmp_amount = sc->mem_end - src; 1223 1224 /* Copy amount up to end of NIC memory. */ 1225 bus_space_read_region_1(buft, bufh, src, dst, tmp_amount); 1226 1227 amount -= tmp_amount; 1228 src = sc->mem_ring; 1229 dst += tmp_amount; 1230 } 1231 bus_space_read_region_1(buft, bufh, src, dst, amount); 1232 1233 return (src + amount); 1234 } 1235 1236 /* 1237 * Copy a packet from an mbuf to the transmit buffer on the card. 1238 * 1239 * Currently uses an extra buffer/extra memory copy, unless the whole 1240 * packet fits in one mbuf. 1241 */ 1242 static __inline__ int 1243 dp8390_write_mbuf(sc, m, buf) 1244 struct dp8390_softc *sc; 1245 struct mbuf *m; 1246 int buf; 1247 { 1248 bus_space_tag_t buft = sc->sc_buft; 1249 bus_space_handle_t bufh = sc->sc_bufh; 1250 u_char *data; 1251 int len, totlen = 0; 1252 1253 for (; m ; m = m->m_next) { 1254 data = mtod(m, u_char *); 1255 len = m->m_len; 1256 if (len > 0) { 1257 bus_space_write_region_1(buft, bufh, buf, data, len); 1258 totlen += len; 1259 buf += len; 1260 } 1261 } 1262 1263 return (totlen); 1264 } 1265 1266 /* 1267 * Enable power on the interface. 1268 */ 1269 int 1270 dp8390_enable(sc) 1271 struct dp8390_softc *sc; 1272 { 1273 1274 if (sc->sc_enabled == 0 && sc->sc_enable != NULL) { 1275 if ((*sc->sc_enable)(sc) != 0) { 1276 printf("%s: device enable failed\n", 1277 sc->sc_dev.dv_xname); 1278 return (EIO); 1279 } 1280 } 1281 1282 sc->sc_enabled = 1; 1283 return (0); 1284 } 1285 1286 /* 1287 * Disable power on the interface. 1288 */ 1289 void 1290 dp8390_disable(sc) 1291 struct dp8390_softc *sc; 1292 { 1293 1294 if (sc->sc_enabled != 0 && sc->sc_disable != NULL) { 1295 (*sc->sc_disable)(sc); 1296 sc->sc_enabled = 0; 1297 } 1298 } 1299 1300 int 1301 dp8390_activate(self, act) 1302 struct device *self; 1303 enum devact act; 1304 { 1305 struct dp8390_softc *sc = (struct dp8390_softc *)self; 1306 int rv = 0, s; 1307 1308 s = splnet(); 1309 switch (act) { 1310 case DVACT_ACTIVATE: 1311 rv = EOPNOTSUPP; 1312 break; 1313 1314 case DVACT_DEACTIVATE: 1315 if_deactivate(&sc->sc_ec.ec_if); 1316 break; 1317 } 1318 splx(s); 1319 return (rv); 1320 } 1321 1322 int 1323 dp8390_detach(sc, flags) 1324 struct dp8390_softc *sc; 1325 int flags; 1326 { 1327 struct ifnet *ifp = &sc->sc_ec.ec_if; 1328 1329 /* Succeed now if there's no work to do. */ 1330 if ((sc->sc_flags & DP8390_ATTACHED) == 0) 1331 return (0); 1332 1333 /* dp8390_disable() checks sc->sc_enabled */ 1334 dp8390_disable(sc); 1335 1336 if (sc->sc_media_fini != NULL) 1337 (*sc->sc_media_fini)(sc); 1338 1339 /* Delete all remaining media. */ 1340 ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY); 1341 1342 #if NRND > 0 1343 rnd_detach_source(&sc->rnd_source); 1344 #endif 1345 ether_ifdetach(ifp); 1346 if_detach(ifp); 1347 1348 return (0); 1349 } 1350 1351 #ifdef IPKDB_DP8390 1352 static void dp8390_ipkdb_hwinit __P((struct ipkdb_if *)); 1353 static void dp8390_ipkdb_init __P((struct ipkdb_if *)); 1354 static void dp8390_ipkdb_leave __P((struct ipkdb_if *)); 1355 static int dp8390_ipkdb_rcv __P((struct ipkdb_if *, u_char *, int)); 1356 static void dp8390_ipkdb_send __P((struct ipkdb_if *, u_char *, int)); 1357 1358 /* 1359 * This is essentially similar to dp8390_config above. 1360 */ 1361 int 1362 dp8390_ipkdb_attach(kip) 1363 struct ipkdb_if *kip; 1364 { 1365 struct dp8390_softc *sc = kip->port; 1366 1367 if (sc->mem_size < 8192 * 2) 1368 sc->txb_cnt = 1; 1369 else if (sc->mem_size < 8192 * 3) 1370 sc->txb_cnt = 2; 1371 else 1372 sc->txb_cnt = 3; 1373 1374 sc->tx_page_start = sc->mem_start >> ED_PAGE_SHIFT; 1375 sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; 1376 sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); 1377 sc->mem_ring = sc->mem_start + (sc->rec_page_start << ED_PAGE_SHIFT); 1378 sc->mem_end = sc->mem_start + sc->mem_size; 1379 1380 dp8390_stop(sc); 1381 1382 kip->start = dp8390_ipkdb_init; 1383 kip->leave = dp8390_ipkdb_leave; 1384 kip->receive = dp8390_ipkdb_rcv; 1385 kip->send = dp8390_ipkdb_send; 1386 1387 return 0; 1388 } 1389 1390 /* 1391 * Similar to dp8390_init above. 1392 */ 1393 static void 1394 dp8390_ipkdb_hwinit(kip) 1395 struct ipkdb_if *kip; 1396 { 1397 struct dp8390_softc *sc = kip->port; 1398 struct ifnet *ifp = &sc->sc_ec.ec_if; 1399 bus_space_tag_t regt = sc->sc_regt; 1400 bus_space_handle_t regh = sc->sc_regh; 1401 int i; 1402 1403 sc->txb_inuse = 0; 1404 sc->txb_new = 0; 1405 sc->txb_next_tx = 0; 1406 dp8390_stop(sc); 1407 1408 if (sc->dcr_reg & ED_DCR_LS) 1409 NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); 1410 else 1411 NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 1412 NIC_PUT(regt, regh, ED_P0_RBCR0, 0); 1413 NIC_PUT(regt, regh, ED_P0_RBCR1, 0); 1414 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); 1415 NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); 1416 if (sc->is790) 1417 NIC_PUT(regt, regh, 0x09, 0); 1418 NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); 1419 NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); 1420 NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); 1421 NIC_PUT(regt, regh, ED_P0_IMR, 0); 1422 NIC_BARRIER(regt, regh); 1423 NIC_PUT(regt, regh, ED_P0_ISR, 0xff); 1424 1425 NIC_BARRIER(regt, regh); 1426 NIC_PUT(regt, regh, ED_P0_CR, 1427 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); 1428 NIC_BARRIER(regt, regh); 1429 1430 for (i = 0; i < sizeof kip->myenetaddr; i++) 1431 NIC_PUT(regt, regh, ED_P1_PAR0 + i, kip->myenetaddr[i]); 1432 /* multicast filter? */ 1433 1434 sc->next_packet = sc->rec_page_start + 1; 1435 NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); 1436 1437 NIC_BARRIER(regt, regh); 1438 NIC_PUT(regt, regh, ED_P1_CR, 1439 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 1440 NIC_BARRIER(regt, regh); 1441 1442 /* promiscuous mode? */ 1443 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_AB | ED_RCR_AM | sc->rcr_proto); 1444 NIC_PUT(regt, regh, ED_P0_TCR, 0); 1445 1446 /* card-specific initialization? */ 1447 1448 NIC_BARRIER(regt, regh); 1449 NIC_PUT(regt, regh, ED_P0_CR, 1450 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1451 1452 ifp->if_flags &= ~IFF_OACTIVE; 1453 } 1454 1455 static void 1456 dp8390_ipkdb_init(kip) 1457 struct ipkdb_if *kip; 1458 { 1459 struct dp8390_softc *sc = kip->port; 1460 bus_space_tag_t regt = sc->sc_regt; 1461 bus_space_handle_t regh = sc->sc_regh; 1462 u_char cmd; 1463 1464 cmd = NIC_GET(regt, regh, ED_P0_CR) & ~(ED_CR_PAGE_3 | ED_CR_STA); 1465 1466 /* Select page 0 */ 1467 NIC_BARRIER(regt, regh); 1468 NIC_PUT(regt, regh, ED_P0_CR, cmd | ED_CR_PAGE_0 | ED_CR_STP); 1469 NIC_BARRIER(regt, regh); 1470 1471 /* If not started, init chip */ 1472 if (cmd & ED_CR_STP) 1473 dp8390_ipkdb_hwinit(kip); 1474 1475 /* If output active, wait for packets to drain */ 1476 while (sc->txb_inuse) { 1477 while (!(cmd = (NIC_GET(regt, regh, ED_P0_ISR) 1478 & (ED_ISR_PTX | ED_ISR_TXE)))) 1479 DELAY(1); 1480 NIC_PUT(regt, regh, ED_P0_ISR, cmd); 1481 if (--sc->txb_inuse) 1482 dp8390_xmit(sc); 1483 } 1484 } 1485 1486 static void 1487 dp8390_ipkdb_leave(kip) 1488 struct ipkdb_if *kip; 1489 { 1490 struct dp8390_softc *sc = kip->port; 1491 struct ifnet *ifp = &sc->sc_ec.ec_if; 1492 1493 ifp->if_timer = 0; 1494 } 1495 1496 /* 1497 * Similar to dp8390_intr above. 1498 */ 1499 static int 1500 dp8390_ipkdb_rcv(kip, buf, poll) 1501 struct ipkdb_if *kip; 1502 u_char *buf; 1503 int poll; 1504 { 1505 struct dp8390_softc *sc = kip->port; 1506 bus_space_tag_t regt = sc->sc_regt; 1507 bus_space_handle_t regh = sc->sc_regh; 1508 u_char bnry, current, isr; 1509 int len, nlen, packet_ptr; 1510 struct dp8390_ring packet_hdr; 1511 1512 /* Switch to page 0. */ 1513 NIC_BARRIER(regt, regh); 1514 NIC_PUT(regt, regh, ED_P0_CR, 1515 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1516 NIC_BARRIER(regt, regh); 1517 1518 while (1) { 1519 isr = NIC_GET(regt, regh, ED_P0_ISR); 1520 NIC_PUT(regt, regh, ED_P0_ISR, isr); 1521 1522 if (isr & (ED_ISR_PRX | ED_ISR_TXE)) { 1523 NIC_GET(regt, regh, ED_P0_NCR); 1524 NIC_GET(regt, regh, ED_P0_TSR); 1525 } 1526 1527 if (isr & ED_ISR_OVW) { 1528 dp8390_ipkdb_hwinit(kip); 1529 continue; 1530 } 1531 1532 if (isr & ED_ISR_CNT) { 1533 NIC_GET(regt, regh, ED_P0_CNTR0); 1534 NIC_GET(regt, regh, ED_P0_CNTR1); 1535 NIC_GET(regt, regh, ED_P0_CNTR2); 1536 } 1537 1538 /* Similar to dp8390_rint above. */ 1539 NIC_BARRIER(regt, regh); 1540 NIC_PUT(regt, regh, ED_P0_CR, 1541 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 1542 NIC_BARRIER(regt, regh); 1543 1544 current = NIC_GET(regt, regh, ED_P1_CURR); 1545 1546 NIC_BARRIER(regt, regh); 1547 NIC_PUT(regt, regh, ED_P1_CR, 1548 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1549 NIC_BARRIER(regt, regh); 1550 1551 if (sc->next_packet == current) { 1552 if (poll) 1553 return 0; 1554 continue; 1555 } 1556 1557 packet_ptr = sc->mem_ring 1558 + ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); 1559 sc->read_hdr(sc, packet_ptr, &packet_hdr); 1560 len = packet_hdr.count; 1561 nlen = packet_hdr.next_packet - sc->next_packet; 1562 if (nlen < 0) 1563 nlen += sc->rec_page_stop - sc->rec_page_start; 1564 nlen--; 1565 if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) 1566 nlen--; 1567 len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); 1568 len -= sizeof(packet_hdr); 1569 1570 if (len <= ETHERMTU 1571 && packet_hdr.next_packet >= sc->rec_page_start 1572 && packet_hdr.next_packet < sc->rec_page_stop) { 1573 sc->ring_copy(sc, packet_ptr + sizeof(packet_hdr), 1574 buf, len); 1575 sc->next_packet = packet_hdr.next_packet; 1576 bnry = sc->next_packet - 1; 1577 if (bnry < sc->rec_page_start) 1578 bnry = sc->rec_page_stop - 1; 1579 NIC_PUT(regt, regh, ED_P0_BNRY, bnry); 1580 return len; 1581 } 1582 1583 dp8390_ipkdb_hwinit(kip); 1584 } 1585 } 1586 1587 static void 1588 dp8390_ipkdb_send(kip, buf, l) 1589 struct ipkdb_if *kip; 1590 u_char *buf; 1591 int l; 1592 { 1593 struct dp8390_softc *sc = kip->port; 1594 bus_space_tag_t regt = sc->sc_regt; 1595 bus_space_handle_t regh = sc->sc_regh; 1596 struct mbuf mb; 1597 1598 mb.m_next = NULL; 1599 mb.m_pkthdr.len = mb.m_len = l; 1600 mtod(&mb, u_char *) = buf; 1601 mb.m_flags = M_EXT | M_PKTHDR; 1602 mb.m_type = MT_DATA; 1603 1604 l = sc->write_mbuf(sc, &mb, 1605 sc->mem_start + ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT)); 1606 sc->txb_len[sc->txb_new] = max(l, ETHER_MIN_LEN - ETHER_CRC_LEN); 1607 1608 if (++sc->txb_new == sc->txb_cnt) 1609 sc->txb_new = 0; 1610 1611 sc->txb_inuse++; 1612 dp8390_xmit(sc); 1613 1614 while (!(NIC_GET(regt, regh, ED_P0_ISR) & (ED_ISR_PTX | ED_ISR_TXE))) 1615 DELAY(1); 1616 1617 sc->txb_inuse--; 1618 } 1619 #endif 1620