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sys/dev/ic/dp8390.c
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1 /* $NetBSD: dp8390.c,v 1.68.14.1 2010/11/20 00:33:45 riz 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 1.68.14.1 2010/11/20 00:33:45 riz Exp $"); 18 19 #include "opt_ipkdb.h" 20 #include "opt_inet.h" 21 #include "bpfilter.h" 22 #include "rnd.h" 23 24 #include <sys/param.h> 25 #include <sys/systm.h> 26 #include <sys/device.h> 27 #include <sys/errno.h> 28 #include <sys/ioctl.h> 29 #include <sys/mbuf.h> 30 #include <sys/socket.h> 31 #include <sys/syslog.h> 32 33 #if NRND > 0 34 #include <sys/rnd.h> 35 #endif 36 37 #include <net/if.h> 38 #include <net/if_dl.h> 39 #include <net/if_types.h> 40 #include <net/if_media.h> 41 #include <net/if_ether.h> 42 43 #ifdef INET 44 #include <netinet/in.h> 45 #include <netinet/in_systm.h> 46 #include <netinet/in_var.h> 47 #include <netinet/ip.h> 48 #include <netinet/if_inarp.h> 49 #endif 50 51 52 #if NBPFILTER > 0 53 #include <net/bpf.h> 54 #include <net/bpfdesc.h> 55 #endif 56 57 #include <sys/bus.h> 58 59 #ifdef IPKDB_DP8390 60 #include <ipkdb/ipkdb.h> 61 #endif 62 63 #include <dev/ic/dp8390reg.h> 64 #include <dev/ic/dp8390var.h> 65 66 #ifdef DEBUG 67 #define inline /* XXX for debugging porpoises */ 68 int dp8390_debug = 0; 69 #endif 70 71 static inline void dp8390_xmit(struct dp8390_softc *); 72 73 static inline void dp8390_read_hdr(struct dp8390_softc *, 74 int, struct dp8390_ring *); 75 static inline int dp8390_ring_copy(struct dp8390_softc *, 76 int, void *, u_short); 77 static inline int dp8390_write_mbuf(struct dp8390_softc *, 78 struct mbuf *, int); 79 80 static int dp8390_test_mem(struct dp8390_softc *); 81 82 /* 83 * Standard media init routine for the dp8390. 84 */ 85 void 86 dp8390_media_init(struct dp8390_softc *sc) 87 { 88 89 ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus); 90 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 91 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 92 } 93 94 /* 95 * Do bus-independent setup. 96 */ 97 int 98 dp8390_config(sc) 99 struct dp8390_softc *sc; 100 { 101 struct ifnet *ifp = &sc->sc_ec.ec_if; 102 int rv; 103 104 rv = 1; 105 106 if (!sc->test_mem) 107 sc->test_mem = dp8390_test_mem; 108 109 /* Allocate one xmit buffer if < 16k, two buffers otherwise. */ 110 if ((sc->mem_size < 16384) || 111 (sc->sc_flags & DP8390_NO_MULTI_BUFFERING)) 112 sc->txb_cnt = 1; 113 else if (sc->mem_size < 8192 * 3) 114 sc->txb_cnt = 2; 115 else 116 sc->txb_cnt = 3; 117 118 sc->tx_page_start = sc->mem_start >> ED_PAGE_SHIFT; 119 sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; 120 sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); 121 sc->mem_ring = sc->mem_start + 122 ((sc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 123 sc->mem_end = sc->mem_start + sc->mem_size; 124 125 /* Now zero memory and verify that it is clear. */ 126 if ((*sc->test_mem)(sc)) 127 goto out; 128 129 /* Set interface to stopped condition (reset). */ 130 dp8390_stop(sc); 131 132 /* Initialize ifnet structure. */ 133 strcpy(ifp->if_xname, device_xname(sc->sc_dev)); 134 ifp->if_softc = sc; 135 ifp->if_start = dp8390_start; 136 ifp->if_ioctl = dp8390_ioctl; 137 if (!ifp->if_watchdog) 138 ifp->if_watchdog = dp8390_watchdog; 139 ifp->if_flags = 140 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 141 IFQ_SET_READY(&ifp->if_snd); 142 143 /* Print additional info when attached. */ 144 aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n", 145 ether_sprintf(sc->sc_enaddr)); 146 147 /* Initialize media goo. */ 148 (*sc->sc_media_init)(sc); 149 150 /* 151 * We can support 802.1Q VLAN-sized frames. 152 */ 153 sc->sc_ec.ec_capabilities |= ETHERCAP_VLAN_MTU; 154 155 /* Attach the interface. */ 156 if_attach(ifp); 157 ether_ifattach(ifp, sc->sc_enaddr); 158 159 #if NRND > 0 160 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 161 RND_TYPE_NET, 0); 162 #endif 163 164 /* The attach is successful. */ 165 sc->sc_flags |= DP8390_ATTACHED; 166 167 rv = 0; 168 out: 169 return (rv); 170 } 171 172 /* 173 * Media change callback. 174 */ 175 int 176 dp8390_mediachange(ifp) 177 struct ifnet *ifp; 178 { 179 struct dp8390_softc *sc = ifp->if_softc; 180 181 if (sc->sc_mediachange) 182 return ((*sc->sc_mediachange)(sc)); 183 return (0); 184 } 185 186 /* 187 * Media status callback. 188 */ 189 void 190 dp8390_mediastatus(ifp, ifmr) 191 struct ifnet *ifp; 192 struct ifmediareq *ifmr; 193 { 194 struct dp8390_softc *sc = ifp->if_softc; 195 196 if (sc->sc_enabled == 0) { 197 ifmr->ifm_active = IFM_ETHER | IFM_NONE; 198 ifmr->ifm_status = 0; 199 return; 200 } 201 202 if (sc->sc_mediastatus) 203 (*sc->sc_mediastatus)(sc, ifmr); 204 } 205 206 /* 207 * Reset interface. 208 */ 209 void 210 dp8390_reset(sc) 211 struct dp8390_softc *sc; 212 { 213 int s; 214 215 s = splnet(); 216 dp8390_stop(sc); 217 dp8390_init(sc); 218 splx(s); 219 } 220 221 /* 222 * Take interface offline. 223 */ 224 void 225 dp8390_stop(sc) 226 struct dp8390_softc *sc; 227 { 228 bus_space_tag_t regt = sc->sc_regt; 229 bus_space_handle_t regh = sc->sc_regh; 230 int n = 5000; 231 232 /* Stop everything on the interface, and select page 0 registers. */ 233 NIC_BARRIER(regt, regh); 234 NIC_PUT(regt, regh, ED_P0_CR, 235 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 236 NIC_BARRIER(regt, regh); 237 238 /* 239 * Wait for interface to enter stopped state, but limit # of checks to 240 * 'n' (about 5ms). It shouldn't even take 5us on modern DS8390's, but 241 * just in case it's an old one. 242 */ 243 while (((NIC_GET(regt, regh, 244 ED_P0_ISR) & ED_ISR_RST) == 0) && --n) 245 DELAY(1); 246 247 if (sc->stop_card != NULL) 248 (*sc->stop_card)(sc); 249 } 250 251 /* 252 * Device timeout/watchdog routine. Entered if the device neglects to generate 253 * an interrupt after a transmit has been started on it. 254 */ 255 256 void 257 dp8390_watchdog(ifp) 258 struct ifnet *ifp; 259 { 260 struct dp8390_softc *sc = ifp->if_softc; 261 262 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 263 ++sc->sc_ec.ec_if.if_oerrors; 264 265 dp8390_reset(sc); 266 } 267 268 /* 269 * Initialize device. 270 */ 271 void 272 dp8390_init(sc) 273 struct dp8390_softc *sc; 274 { 275 bus_space_tag_t regt = sc->sc_regt; 276 bus_space_handle_t regh = sc->sc_regh; 277 struct ifnet *ifp = &sc->sc_ec.ec_if; 278 u_int8_t mcaf[8]; 279 int i; 280 281 /* 282 * Initialize the NIC in the exact order outlined in the NS manual. 283 * This init procedure is "mandatory"...don't change what or when 284 * things happen. 285 */ 286 287 /* Reset transmitter flags. */ 288 ifp->if_timer = 0; 289 290 sc->txb_inuse = 0; 291 sc->txb_new = 0; 292 sc->txb_next_tx = 0; 293 294 /* Set interface for page 0, remote DMA complete, stopped. */ 295 NIC_BARRIER(regt, regh); 296 NIC_PUT(regt, regh, ED_P0_CR, 297 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 298 NIC_BARRIER(regt, regh); 299 300 if (sc->dcr_reg & ED_DCR_LS) { 301 NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); 302 } else { 303 /* 304 * Set FIFO threshold to 8, No auto-init Remote DMA, byte 305 * order=80x86, byte-wide DMA xfers, 306 */ 307 NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 308 } 309 310 /* Clear remote byte count registers. */ 311 NIC_PUT(regt, regh, ED_P0_RBCR0, 0); 312 NIC_PUT(regt, regh, ED_P0_RBCR1, 0); 313 314 /* Tell RCR to do nothing for now. */ 315 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); 316 317 /* Place NIC in internal loopback mode. */ 318 NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); 319 320 /* Set lower bits of byte addressable framing to 0. */ 321 if (sc->is790) 322 NIC_PUT(regt, regh, 0x09, 0); 323 324 /* Initialize receive buffer ring. */ 325 NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); 326 NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); 327 NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); 328 329 /* 330 * Enable the following interrupts: receive/transmit complete, 331 * receive/transmit error, and Receiver OverWrite. 332 * 333 * Counter overflow and Remote DMA complete are *not* enabled. 334 */ 335 NIC_PUT(regt, regh, ED_P0_IMR, 336 ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | 337 ED_IMR_OVWE); 338 339 /* 340 * Clear all interrupts. A '1' in each bit position clears the 341 * corresponding flag. 342 */ 343 NIC_PUT(regt, regh, ED_P0_ISR, 0xff); 344 345 /* Program command register for page 1. */ 346 NIC_BARRIER(regt, regh); 347 NIC_PUT(regt, regh, ED_P0_CR, 348 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); 349 NIC_BARRIER(regt, regh); 350 351 /* Copy out our station address. */ 352 for (i = 0; i < ETHER_ADDR_LEN; ++i) 353 NIC_PUT(regt, regh, ED_P1_PAR0 + i, 354 CLLADDR(ifp->if_sadl)[i]); 355 356 /* Set multicast filter on chip. */ 357 dp8390_getmcaf(&sc->sc_ec, mcaf); 358 for (i = 0; i < 8; i++) 359 NIC_PUT(regt, regh, ED_P1_MAR0 + i, mcaf[i]); 360 361 /* 362 * Set current page pointer to one page after the boundary pointer, as 363 * recommended in the National manual. 364 */ 365 sc->next_packet = sc->rec_page_start + 1; 366 NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); 367 368 /* Program command register for page 0. */ 369 NIC_BARRIER(regt, regh); 370 NIC_PUT(regt, regh, ED_P1_CR, 371 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 372 NIC_BARRIER(regt, regh); 373 374 /* Accept broadcast and multicast packets by default. */ 375 i = ED_RCR_AB | ED_RCR_AM | sc->rcr_proto; 376 if (ifp->if_flags & IFF_PROMISC) { 377 /* 378 * Set promiscuous mode. Multicast filter was set earlier so 379 * that we should receive all multicast packets. 380 */ 381 i |= ED_RCR_PRO | ED_RCR_AR | ED_RCR_SEP; 382 } 383 NIC_PUT(regt, regh, ED_P0_RCR, i); 384 385 /* Take interface out of loopback. */ 386 NIC_PUT(regt, regh, ED_P0_TCR, 0); 387 388 /* Do any card-specific initialization, if applicable. */ 389 if (sc->init_card) 390 (*sc->init_card)(sc); 391 392 /* Fire up the interface. */ 393 NIC_BARRIER(regt, regh); 394 NIC_PUT(regt, regh, ED_P0_CR, 395 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 396 397 /* Set 'running' flag, and clear output active flag. */ 398 ifp->if_flags |= IFF_RUNNING; 399 ifp->if_flags &= ~IFF_OACTIVE; 400 401 /* ...and attempt to start output. */ 402 dp8390_start(ifp); 403 } 404 405 /* 406 * This routine actually starts the transmission on the interface. 407 */ 408 static inline void 409 dp8390_xmit(sc) 410 struct dp8390_softc *sc; 411 { 412 bus_space_tag_t regt = sc->sc_regt; 413 bus_space_handle_t regh = sc->sc_regh; 414 struct ifnet *ifp = &sc->sc_ec.ec_if; 415 u_short len; 416 417 #ifdef DIAGNOSTIC 418 if ((sc->txb_next_tx + sc->txb_inuse) % sc->txb_cnt != sc->txb_new) 419 panic("dp8390_xmit: desync, next_tx=%d inuse=%d cnt=%d new=%d", 420 sc->txb_next_tx, sc->txb_inuse, sc->txb_cnt, sc->txb_new); 421 422 if (sc->txb_inuse == 0) 423 panic("dp8390_xmit: no packets to xmit"); 424 #endif 425 426 len = sc->txb_len[sc->txb_next_tx]; 427 428 /* Set NIC for page 0 register access. */ 429 NIC_BARRIER(regt, regh); 430 NIC_PUT(regt, regh, ED_P0_CR, 431 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 432 NIC_BARRIER(regt, regh); 433 434 /* Set TX buffer start page. */ 435 NIC_PUT(regt, regh, ED_P0_TPSR, sc->tx_page_start + 436 sc->txb_next_tx * ED_TXBUF_SIZE); 437 438 /* Set TX length. */ 439 NIC_PUT(regt, regh, ED_P0_TBCR0, len); 440 NIC_PUT(regt, regh, ED_P0_TBCR1, len >> 8); 441 442 /* Set page 0, remote DMA complete, transmit packet, and *start*. */ 443 NIC_BARRIER(regt, regh); 444 NIC_PUT(regt, regh, ED_P0_CR, 445 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_TXP | ED_CR_STA); 446 447 /* Point to next transmit buffer slot and wrap if necessary. */ 448 if (++sc->txb_next_tx == sc->txb_cnt) 449 sc->txb_next_tx = 0; 450 451 /* Set a timer just in case we never hear from the board again. */ 452 ifp->if_timer = 2; 453 } 454 455 /* 456 * Start output on interface. 457 * We make two assumptions here: 458 * 1) that the current priority is set to splnet _before_ this code 459 * is called *and* is returned to the appropriate priority after 460 * return 461 * 2) that the IFF_OACTIVE flag is checked before this code is called 462 * (i.e. that the output part of the interface is idle) 463 */ 464 void 465 dp8390_start(ifp) 466 struct ifnet *ifp; 467 { 468 struct dp8390_softc *sc = ifp->if_softc; 469 struct mbuf *m0; 470 int buffer; 471 int len; 472 473 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 474 return; 475 476 outloop: 477 /* See if there is room to put another packet in the buffer. */ 478 if (sc->txb_inuse == sc->txb_cnt) { 479 /* No room. Indicate this to the outside world and exit. */ 480 ifp->if_flags |= IFF_OACTIVE; 481 return; 482 } 483 IFQ_DEQUEUE(&ifp->if_snd, m0); 484 if (m0 == 0) 485 return; 486 487 /* We need to use m->m_pkthdr.len, so require the header */ 488 if ((m0->m_flags & M_PKTHDR) == 0) 489 panic("dp8390_start: no header mbuf"); 490 491 #if NBPFILTER > 0 492 /* Tap off here if there is a BPF listener. */ 493 if (ifp->if_bpf) 494 bpf_mtap(ifp->if_bpf, m0); 495 #endif 496 497 /* txb_new points to next open buffer slot. */ 498 buffer = sc->mem_start + 499 ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 500 501 if (sc->write_mbuf) 502 len = (*sc->write_mbuf)(sc, m0, buffer); 503 else 504 len = dp8390_write_mbuf(sc, m0, buffer); 505 506 m_freem(m0); 507 sc->txb_len[sc->txb_new] = len; 508 509 /* Point to next buffer slot and wrap if necessary. */ 510 if (++sc->txb_new == sc->txb_cnt) 511 sc->txb_new = 0; 512 513 /* Start the first packet transmitting. */ 514 if (sc->txb_inuse++ == 0) 515 dp8390_xmit(sc); 516 517 /* Loop back to the top to possibly buffer more packets. */ 518 goto outloop; 519 } 520 521 /* 522 * Ethernet interface receiver interrupt. 523 */ 524 void 525 dp8390_rint(sc) 526 struct dp8390_softc *sc; 527 { 528 bus_space_tag_t regt = sc->sc_regt; 529 bus_space_handle_t regh = sc->sc_regh; 530 struct dp8390_ring packet_hdr; 531 int packet_ptr; 532 u_short len; 533 u_char boundary, current; 534 u_char nlen; 535 536 loop: 537 /* Set NIC to page 1 registers to get 'current' pointer. */ 538 NIC_BARRIER(regt, regh); 539 NIC_PUT(regt, regh, ED_P0_CR, 540 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 541 NIC_BARRIER(regt, regh); 542 543 /* 544 * 'sc->next_packet' is the logical beginning of the ring-buffer - i.e. 545 * it points to where new data has been buffered. The 'CURR' (current) 546 * register points to the logical end of the ring-buffer - i.e. it 547 * points to where additional new data will be added. We loop here 548 * until the logical beginning equals the logical end (or in other 549 * words, until the ring-buffer is empty). 550 */ 551 current = NIC_GET(regt, regh, ED_P1_CURR); 552 if (sc->next_packet == current) 553 return; 554 555 /* Set NIC to page 0 registers to update boundary register. */ 556 NIC_BARRIER(regt, regh); 557 NIC_PUT(regt, regh, ED_P1_CR, 558 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 559 NIC_BARRIER(regt, regh); 560 561 do { 562 /* Get pointer to this buffer's header structure. */ 563 packet_ptr = sc->mem_ring + 564 ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); 565 566 if (sc->read_hdr) 567 (*sc->read_hdr)(sc, packet_ptr, &packet_hdr); 568 else 569 dp8390_read_hdr(sc, packet_ptr, &packet_hdr); 570 len = packet_hdr.count; 571 572 /* 573 * Try do deal with old, buggy chips that sometimes duplicate 574 * the low byte of the length into the high byte. We do this 575 * by simply ignoring the high byte of the length and always 576 * recalculating it. 577 * 578 * NOTE: sc->next_packet is pointing at the current packet. 579 */ 580 if (packet_hdr.next_packet >= sc->next_packet) 581 nlen = (packet_hdr.next_packet - sc->next_packet); 582 else 583 nlen = ((packet_hdr.next_packet - sc->rec_page_start) + 584 (sc->rec_page_stop - sc->next_packet)); 585 --nlen; 586 if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) 587 --nlen; 588 len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); 589 #ifdef DIAGNOSTIC 590 if (len != packet_hdr.count) { 591 aprint_verbose_dev(sc->sc_dev, "length does not match " 592 "next packet pointer\n"); 593 aprint_verbose_dev(sc->sc_dev, "len %04x nlen %04x " 594 "start %02x first %02x curr %02x next %02x " 595 "stop %02x\n", packet_hdr.count, len, 596 sc->rec_page_start, sc->next_packet, current, 597 packet_hdr.next_packet, sc->rec_page_stop); 598 } 599 #endif 600 601 /* 602 * Be fairly liberal about what we allow as a "reasonable" 603 * length so that a [crufty] packet will make it to BPF (and 604 * can thus be analyzed). Note that all that is really 605 * important is that we have a length that will fit into one 606 * mbuf cluster or less; the upper layer protocols can then 607 * figure out the length from their own length field(s). 608 */ 609 if (len <= MCLBYTES && 610 packet_hdr.next_packet >= sc->rec_page_start && 611 packet_hdr.next_packet < sc->rec_page_stop) { 612 /* Go get packet. */ 613 dp8390_read(sc, 614 packet_ptr + sizeof(struct dp8390_ring), 615 len - sizeof(struct dp8390_ring)); 616 } else { 617 /* Really BAD. The ring pointers are corrupted. */ 618 log(LOG_ERR, "%s: NIC memory corrupt - " 619 "invalid packet length %d\n", 620 device_xname(sc->sc_dev), len); 621 ++sc->sc_ec.ec_if.if_ierrors; 622 dp8390_reset(sc); 623 return; 624 } 625 626 /* Update next packet pointer. */ 627 sc->next_packet = packet_hdr.next_packet; 628 629 /* 630 * Update NIC boundary pointer - being careful to keep it one 631 * buffer behind (as recommended by NS databook). 632 */ 633 boundary = sc->next_packet - 1; 634 if (boundary < sc->rec_page_start) 635 boundary = sc->rec_page_stop - 1; 636 NIC_PUT(regt, regh, ED_P0_BNRY, boundary); 637 } while (sc->next_packet != current); 638 639 goto loop; 640 } 641 642 /* Ethernet interface interrupt processor. */ 643 int 644 dp8390_intr(arg) 645 void *arg; 646 { 647 struct dp8390_softc *sc = (struct dp8390_softc *)arg; 648 bus_space_tag_t regt = sc->sc_regt; 649 bus_space_handle_t regh = sc->sc_regh; 650 struct ifnet *ifp = &sc->sc_ec.ec_if; 651 u_char isr; 652 #if NRND > 0 653 u_char rndisr; 654 #endif 655 656 if (sc->sc_enabled == 0 || 657 !device_is_active(sc->sc_dev)) 658 return (0); 659 660 /* Set NIC to page 0 registers. */ 661 NIC_BARRIER(regt, regh); 662 NIC_PUT(regt, regh, ED_P0_CR, 663 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 664 NIC_BARRIER(regt, regh); 665 666 isr = NIC_GET(regt, regh, ED_P0_ISR); 667 if (!isr) 668 return (0); 669 670 #if NRND > 0 671 rndisr = isr; 672 #endif 673 674 /* Loop until there are no more new interrupts. */ 675 for (;;) { 676 /* 677 * Reset all the bits that we are 'acknowledging' by writing a 678 * '1' to each bit position that was set. 679 * (Writing a '1' *clears* the bit.) 680 */ 681 NIC_PUT(regt, regh, ED_P0_ISR, isr); 682 683 /* Work around for AX88190 bug */ 684 if ((sc->sc_flags & DP8390_DO_AX88190_WORKAROUND) != 0) 685 while ((NIC_GET(regt, regh, ED_P0_ISR) & isr) != 0) { 686 NIC_PUT(regt, regh, ED_P0_ISR, 0); 687 NIC_PUT(regt, regh, ED_P0_ISR, isr); 688 } 689 690 /* 691 * Handle transmitter interrupts. Handle these first because 692 * the receiver will reset the board under some conditions. 693 * 694 * If the chip was reset while a packet was transmitting, it 695 * may still deliver a TX interrupt. In this case, just ignore 696 * the interrupt. 697 */ 698 if (isr & (ED_ISR_PTX | ED_ISR_TXE) && 699 sc->txb_inuse != 0) { 700 u_char collisions = 701 NIC_GET(regt, regh, ED_P0_NCR) & 0x0f; 702 703 /* 704 * Check for transmit error. If a TX completed with an 705 * error, we end up throwing the packet away. Really 706 * the only error that is possible is excessive 707 * collisions, and in this case it is best to allow the 708 * automatic mechanisms of TCP to backoff the flow. Of 709 * course, with UDP we're screwed, but this is expected 710 * when a network is heavily loaded. 711 */ 712 if (isr & ED_ISR_TXE) { 713 /* 714 * Excessive collisions (16). 715 */ 716 if ((NIC_GET(regt, regh, ED_P0_TSR) 717 & ED_TSR_ABT) && (collisions == 0)) { 718 /* 719 * When collisions total 16, the P0_NCR 720 * will indicate 0, and the TSR_ABT is 721 * set. 722 */ 723 collisions = 16; 724 } 725 726 /* Update output errors counter. */ 727 ++ifp->if_oerrors; 728 } else { 729 /* 730 * Throw away the non-error status bits. 731 * 732 * XXX 733 * It may be useful to detect loss of carrier 734 * and late collisions here. 735 */ 736 (void)NIC_GET(regt, regh, ED_P0_TSR); 737 738 /* 739 * Update total number of successfully 740 * transmitted packets. 741 */ 742 ++ifp->if_opackets; 743 } 744 745 /* Clear watchdog timer. */ 746 ifp->if_timer = 0; 747 ifp->if_flags &= ~IFF_OACTIVE; 748 749 /* 750 * Add in total number of collisions on last 751 * transmission. 752 */ 753 ifp->if_collisions += collisions; 754 755 /* 756 * Decrement buffer in-use count if not zero (can only 757 * be zero if a transmitter interrupt occurred while not 758 * actually transmitting). 759 * If data is ready to transmit, start it transmitting, 760 * otherwise defer until after handling receiver. 761 */ 762 if (--sc->txb_inuse != 0) 763 dp8390_xmit(sc); 764 } 765 766 /* Handle receiver interrupts. */ 767 if (isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) { 768 /* 769 * Overwrite warning. In order to make sure that a 770 * lockup of the local DMA hasn't occurred, we reset 771 * and re-init the NIC. The NSC manual suggests only a 772 * partial reset/re-init is necessary - but some chips 773 * seem to want more. The DMA lockup has been seen 774 * only with early rev chips - Methinks this bug was 775 * fixed in later revs. -DG 776 */ 777 if (isr & ED_ISR_OVW) { 778 ++ifp->if_ierrors; 779 #ifdef DIAGNOSTIC 780 log(LOG_WARNING, "%s: warning - receiver " 781 "ring buffer overrun\n", 782 device_xname(sc->sc_dev)); 783 #endif 784 /* Stop/reset/re-init NIC. */ 785 dp8390_reset(sc); 786 } else { 787 /* 788 * Receiver Error. One or more of: CRC error, 789 * frame alignment error FIFO overrun, or 790 * missed packet. 791 */ 792 if (isr & ED_ISR_RXE) { 793 ++ifp->if_ierrors; 794 #ifdef DEBUG 795 if (dp8390_debug) { 796 printf("%s: receive error %x\n", 797 device_xname(sc->sc_dev), 798 NIC_GET(regt, regh, 799 ED_P0_RSR)); 800 } 801 #endif 802 } 803 804 /* 805 * Go get the packet(s) 806 * XXX - Doing this on an error is dubious 807 * because there shouldn't be any data to get 808 * (we've configured the interface to not 809 * accept packets with errors). 810 */ 811 if (sc->recv_int) 812 (*sc->recv_int)(sc); 813 else 814 dp8390_rint(sc); 815 } 816 } 817 818 /* 819 * If it looks like the transmitter can take more data, attempt 820 * to start output on the interface. This is done after 821 * handling the receiver to give the receiver priority. 822 */ 823 dp8390_start(ifp); 824 825 /* 826 * Return NIC CR to standard state: page 0, remote DMA 827 * complete, start (toggling the TXP bit off, even if was just 828 * set in the transmit routine, is *okay* - it is 'edge' 829 * triggered from low to high). 830 */ 831 NIC_BARRIER(regt, regh); 832 NIC_PUT(regt, regh, ED_P0_CR, 833 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 834 NIC_BARRIER(regt, regh); 835 836 /* 837 * If the Network Talley Counters overflow, read them to reset 838 * them. It appears that old 8390's won't clear the ISR flag 839 * otherwise - resulting in an infinite loop. 840 */ 841 if (isr & ED_ISR_CNT) { 842 (void)NIC_GET(regt, regh, ED_P0_CNTR0); 843 (void)NIC_GET(regt, regh, ED_P0_CNTR1); 844 (void)NIC_GET(regt, regh, ED_P0_CNTR2); 845 } 846 847 isr = NIC_GET(regt, regh, ED_P0_ISR); 848 if (!isr) 849 goto out; 850 } 851 852 out: 853 #if NRND > 0 854 rnd_add_uint32(&sc->rnd_source, rndisr); 855 #endif 856 return (1); 857 } 858 859 /* 860 * Process an ioctl request. This code needs some work - it looks pretty ugly. 861 */ 862 int 863 dp8390_ioctl(ifp, cmd, data) 864 struct ifnet *ifp; 865 u_long cmd; 866 void *data; 867 { 868 struct dp8390_softc *sc = ifp->if_softc; 869 struct ifaddr *ifa = (struct ifaddr *) data; 870 struct ifreq *ifr = (struct ifreq *) data; 871 int s, error = 0; 872 873 s = splnet(); 874 875 switch (cmd) { 876 877 case SIOCSIFADDR: 878 if ((error = dp8390_enable(sc)) != 0) 879 break; 880 ifp->if_flags |= IFF_UP; 881 882 switch (ifa->ifa_addr->sa_family) { 883 #ifdef INET 884 case AF_INET: 885 dp8390_init(sc); 886 arp_ifinit(ifp, ifa); 887 break; 888 #endif 889 default: 890 dp8390_init(sc); 891 break; 892 } 893 break; 894 895 case SIOCSIFFLAGS: 896 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 897 case IFF_RUNNING: 898 /* 899 * If interface is marked down and it is running, then 900 * stop it. 901 */ 902 dp8390_stop(sc); 903 ifp->if_flags &= ~IFF_RUNNING; 904 dp8390_disable(sc); 905 break; 906 case IFF_UP: 907 /* 908 * If interface is marked up and it is stopped, then 909 * start it. 910 */ 911 if ((error = dp8390_enable(sc)) != 0) 912 break; 913 dp8390_init(sc); 914 break; 915 case IFF_UP|IFF_RUNNING: 916 /* 917 * Reset the interface to pick up changes in any other 918 * flags that affect hardware registers. 919 */ 920 dp8390_stop(sc); 921 dp8390_init(sc); 922 break; 923 default: 924 break; 925 } 926 break; 927 928 case SIOCADDMULTI: 929 case SIOCDELMULTI: 930 if (sc->sc_enabled == 0) { 931 error = EIO; 932 break; 933 } 934 935 /* Update our multicast list. */ 936 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 937 /* 938 * Multicast list has changed; set the hardware filter 939 * accordingly. 940 */ 941 if (ifp->if_flags & IFF_RUNNING) { 942 dp8390_stop(sc); /* XXX for ds_setmcaf? */ 943 dp8390_init(sc); 944 } 945 error = 0; 946 } 947 break; 948 949 case SIOCGIFMEDIA: 950 case SIOCSIFMEDIA: 951 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 952 break; 953 954 default: 955 error = ENODEV; 956 break; 957 } 958 959 splx(s); 960 return (error); 961 } 962 963 /* 964 * Retrieve packet from buffer memory and send to the next level up via 965 * ether_input(). If there is a BPF listener, give a copy to BPF, too. 966 */ 967 void 968 dp8390_read(sc, buf, len) 969 struct dp8390_softc *sc; 970 int buf; 971 u_short len; 972 { 973 struct ifnet *ifp = &sc->sc_ec.ec_if; 974 struct mbuf *m; 975 976 /* Pull packet off interface. */ 977 m = dp8390_get(sc, buf, len); 978 if (m == 0) { 979 ifp->if_ierrors++; 980 return; 981 } 982 983 ifp->if_ipackets++; 984 985 #if NBPFILTER > 0 986 /* 987 * Check if there's a BPF listener on this interface. 988 * If so, hand off the raw packet to bpf. 989 */ 990 if (ifp->if_bpf) 991 bpf_mtap(ifp->if_bpf, m); 992 #endif 993 994 (*ifp->if_input)(ifp, m); 995 } 996 997 998 /* 999 * Supporting routines. 1000 */ 1001 1002 /* 1003 * Compute the multicast address filter from the list of multicast addresses we 1004 * need to listen to. 1005 */ 1006 void 1007 dp8390_getmcaf(ec, af) 1008 struct ethercom *ec; 1009 u_int8_t *af; 1010 { 1011 struct ifnet *ifp = &ec->ec_if; 1012 struct ether_multi *enm; 1013 u_int32_t crc; 1014 int i; 1015 struct ether_multistep step; 1016 1017 /* 1018 * Set up multicast address filter by passing all multicast addresses 1019 * through a crc generator, and then using the high order 6 bits as an 1020 * index into the 64 bit logical address filter. The high order bit 1021 * selects the word, while the rest of the bits select the bit within 1022 * the word. 1023 */ 1024 1025 if (ifp->if_flags & IFF_PROMISC) { 1026 ifp->if_flags |= IFF_ALLMULTI; 1027 for (i = 0; i < 8; i++) 1028 af[i] = 0xff; 1029 return; 1030 } 1031 for (i = 0; i < 8; i++) 1032 af[i] = 0; 1033 ETHER_FIRST_MULTI(step, ec, enm); 1034 while (enm != NULL) { 1035 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 1036 sizeof(enm->enm_addrlo)) != 0) { 1037 /* 1038 * We must listen to a range of multicast addresses. 1039 * For now, just accept all multicasts, rather than 1040 * trying to set only those filter bits needed to match 1041 * the range. (At this time, the only use of address 1042 * ranges is for IP multicast routing, for which the 1043 * range is big enough to require all bits set.) 1044 */ 1045 ifp->if_flags |= IFF_ALLMULTI; 1046 for (i = 0; i < 8; i++) 1047 af[i] = 0xff; 1048 return; 1049 } 1050 1051 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 1052 1053 /* Just want the 6 most significant bits. */ 1054 crc >>= 26; 1055 1056 /* Turn on the corresponding bit in the filter. */ 1057 af[crc >> 3] |= 1 << (crc & 0x7); 1058 1059 ETHER_NEXT_MULTI(step, enm); 1060 } 1061 ifp->if_flags &= ~IFF_ALLMULTI; 1062 } 1063 1064 /* 1065 * Copy data from receive buffer to a new mbuf chain allocating mbufs 1066 * as needed. Return pointer to first mbuf in chain. 1067 * sc = dp8390 info (softc) 1068 * src = pointer in dp8390 ring buffer 1069 * total_len = amount of data to copy 1070 */ 1071 struct mbuf * 1072 dp8390_get(sc, src, total_len) 1073 struct dp8390_softc *sc; 1074 int src; 1075 u_short total_len; 1076 { 1077 struct ifnet *ifp = &sc->sc_ec.ec_if; 1078 struct mbuf *m, *m0, *newm; 1079 u_short len; 1080 1081 MGETHDR(m0, M_DONTWAIT, MT_DATA); 1082 if (m0 == 0) 1083 return (0); 1084 m0->m_pkthdr.rcvif = ifp; 1085 m0->m_pkthdr.len = total_len; 1086 len = MHLEN; 1087 m = m0; 1088 1089 while (total_len > 0) { 1090 if (total_len >= MINCLSIZE) { 1091 MCLGET(m, M_DONTWAIT); 1092 if ((m->m_flags & M_EXT) == 0) 1093 goto bad; 1094 len = MCLBYTES; 1095 } 1096 1097 /* 1098 * Make sure the data after the Ethernet header is aligned. 1099 */ 1100 if (m == m0) { 1101 char *newdata = (char *) 1102 ALIGN(m->m_data + sizeof(struct ether_header)) - 1103 sizeof(struct ether_header); 1104 len -= newdata - m->m_data; 1105 m->m_data = newdata; 1106 } 1107 1108 m->m_len = len = min(total_len, len); 1109 if (sc->ring_copy) 1110 src = (*sc->ring_copy)(sc, src, mtod(m, void *), len); 1111 else 1112 src = dp8390_ring_copy(sc, src, mtod(m, void *), len); 1113 1114 total_len -= len; 1115 if (total_len > 0) { 1116 MGET(newm, M_DONTWAIT, MT_DATA); 1117 if (newm == 0) 1118 goto bad; 1119 len = MLEN; 1120 m = m->m_next = newm; 1121 } 1122 } 1123 1124 return (m0); 1125 1126 bad: 1127 m_freem(m0); 1128 return (0); 1129 } 1130 1131 1132 /* 1133 * Default driver support functions. 1134 * 1135 * NOTE: all support functions assume 8-bit shared memory. 1136 */ 1137 /* 1138 * Zero NIC buffer memory and verify that it is clear. 1139 */ 1140 static int 1141 dp8390_test_mem(sc) 1142 struct dp8390_softc *sc; 1143 { 1144 bus_space_tag_t buft = sc->sc_buft; 1145 bus_space_handle_t bufh = sc->sc_bufh; 1146 int i; 1147 1148 bus_space_set_region_1(buft, bufh, sc->mem_start, 0, sc->mem_size); 1149 1150 for (i = 0; i < sc->mem_size; ++i) { 1151 if (bus_space_read_1(buft, bufh, sc->mem_start + i)) { 1152 printf(": failed to clear NIC buffer at offset %x - " 1153 "check configuration\n", (sc->mem_start + i)); 1154 return 1; 1155 } 1156 } 1157 1158 return 0; 1159 } 1160 1161 /* 1162 * Read a packet header from the ring, given the source offset. 1163 */ 1164 static inline void 1165 dp8390_read_hdr(sc, src, hdrp) 1166 struct dp8390_softc *sc; 1167 int src; 1168 struct dp8390_ring *hdrp; 1169 { 1170 bus_space_tag_t buft = sc->sc_buft; 1171 bus_space_handle_t bufh = sc->sc_bufh; 1172 1173 /* 1174 * The byte count includes a 4 byte header that was added by 1175 * the NIC. 1176 */ 1177 hdrp->rsr = bus_space_read_1(buft, bufh, src); 1178 hdrp->next_packet = bus_space_read_1(buft, bufh, src + 1); 1179 hdrp->count = bus_space_read_1(buft, bufh, src + 2) | 1180 (bus_space_read_1(buft, bufh, src + 3) << 8); 1181 } 1182 1183 /* 1184 * Copy `amount' bytes from a packet in the ring buffer to a linear 1185 * destination buffer, given a source offset and destination address. 1186 * Takes into account ring-wrap. 1187 */ 1188 static inline int 1189 dp8390_ring_copy(sc, src, dst, amount) 1190 struct dp8390_softc *sc; 1191 int src; 1192 void *dst; 1193 u_short amount; 1194 { 1195 bus_space_tag_t buft = sc->sc_buft; 1196 bus_space_handle_t bufh = sc->sc_bufh; 1197 u_short tmp_amount; 1198 1199 /* Does copy wrap to lower addr in ring buffer? */ 1200 if (src + amount > sc->mem_end) { 1201 tmp_amount = sc->mem_end - src; 1202 1203 /* Copy amount up to end of NIC memory. */ 1204 bus_space_read_region_1(buft, bufh, src, dst, tmp_amount); 1205 1206 amount -= tmp_amount; 1207 src = sc->mem_ring; 1208 dst = (char *)dst + tmp_amount; 1209 } 1210 bus_space_read_region_1(buft, bufh, src, dst, amount); 1211 1212 return (src + amount); 1213 } 1214 1215 /* 1216 * Copy a packet from an mbuf to the transmit buffer on the card. 1217 * 1218 * Currently uses an extra buffer/extra memory copy, unless the whole 1219 * packet fits in one mbuf. 1220 */ 1221 static inline int 1222 dp8390_write_mbuf(sc, m, buf) 1223 struct dp8390_softc *sc; 1224 struct mbuf *m; 1225 int buf; 1226 { 1227 bus_space_tag_t buft = sc->sc_buft; 1228 bus_space_handle_t bufh = sc->sc_bufh; 1229 u_char *data; 1230 int len, totlen = 0; 1231 1232 for (; m ; m = m->m_next) { 1233 data = mtod(m, u_char *); 1234 len = m->m_len; 1235 if (len > 0) { 1236 bus_space_write_region_1(buft, bufh, buf, data, len); 1237 totlen += len; 1238 buf += len; 1239 } 1240 } 1241 if (totlen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1242 bus_space_set_region_1(buft, bufh, buf, 0, 1243 ETHER_MIN_LEN - ETHER_CRC_LEN - totlen); 1244 totlen = ETHER_MIN_LEN - ETHER_CRC_LEN; 1245 } 1246 return (totlen); 1247 } 1248 1249 /* 1250 * Enable power on the interface. 1251 */ 1252 int 1253 dp8390_enable(sc) 1254 struct dp8390_softc *sc; 1255 { 1256 1257 if (sc->sc_enabled == 0 && sc->sc_enable != NULL) { 1258 if ((*sc->sc_enable)(sc) != 0) { 1259 aprint_error_dev(sc->sc_dev, 1260 "device enable failed\n"); 1261 return (EIO); 1262 } 1263 } 1264 1265 sc->sc_enabled = 1; 1266 return (0); 1267 } 1268 1269 /* 1270 * Disable power on the interface. 1271 */ 1272 void 1273 dp8390_disable(sc) 1274 struct dp8390_softc *sc; 1275 { 1276 1277 if (sc->sc_enabled != 0 && sc->sc_disable != NULL) { 1278 (*sc->sc_disable)(sc); 1279 sc->sc_enabled = 0; 1280 } 1281 } 1282 1283 int 1284 dp8390_activate(self, act) 1285 struct device *self; 1286 enum devact act; 1287 { 1288 struct dp8390_softc *sc = (struct dp8390_softc *)self; 1289 int rv = 0, s; 1290 1291 s = splnet(); 1292 switch (act) { 1293 case DVACT_ACTIVATE: 1294 rv = EOPNOTSUPP; 1295 break; 1296 1297 case DVACT_DEACTIVATE: 1298 if_deactivate(&sc->sc_ec.ec_if); 1299 break; 1300 } 1301 splx(s); 1302 return (rv); 1303 } 1304 1305 int 1306 dp8390_detach(struct dp8390_softc *sc, int flags) 1307 { 1308 struct ifnet *ifp = &sc->sc_ec.ec_if; 1309 1310 /* Succeed now if there's no work to do. */ 1311 if ((sc->sc_flags & DP8390_ATTACHED) == 0) 1312 return (0); 1313 1314 /* dp8390_disable() checks sc->sc_enabled */ 1315 dp8390_disable(sc); 1316 1317 if (sc->sc_media_fini != NULL) 1318 (*sc->sc_media_fini)(sc); 1319 1320 /* Delete all remaining media. */ 1321 ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY); 1322 1323 #if NRND > 0 1324 rnd_detach_source(&sc->rnd_source); 1325 #endif 1326 ether_ifdetach(ifp); 1327 if_detach(ifp); 1328 1329 return (0); 1330 } 1331 1332 #ifdef IPKDB_DP8390 1333 static void dp8390_ipkdb_hwinit(struct ipkdb_if *); 1334 static void dp8390_ipkdb_init(struct ipkdb_if *); 1335 static void dp8390_ipkdb_leave(struct ipkdb_if *); 1336 static int dp8390_ipkdb_rcv(struct ipkdb_if *, u_char *, int); 1337 static void dp8390_ipkdb_send(struct ipkdb_if *, u_char *, int); 1338 1339 /* 1340 * This is essentially similar to dp8390_config above. 1341 */ 1342 int 1343 dp8390_ipkdb_attach(kip) 1344 struct ipkdb_if *kip; 1345 { 1346 struct dp8390_softc *sc = kip->port; 1347 1348 if (sc->mem_size < 8192 * 2) 1349 sc->txb_cnt = 1; 1350 else if (sc->mem_size < 8192 * 3) 1351 sc->txb_cnt = 2; 1352 else 1353 sc->txb_cnt = 3; 1354 1355 sc->tx_page_start = sc->mem_start >> ED_PAGE_SHIFT; 1356 sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; 1357 sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); 1358 sc->mem_ring = sc->mem_start + 1359 ((sc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 1360 sc->mem_end = sc->mem_start + sc->mem_size; 1361 1362 dp8390_stop(sc); 1363 1364 kip->start = dp8390_ipkdb_init; 1365 kip->leave = dp8390_ipkdb_leave; 1366 kip->receive = dp8390_ipkdb_rcv; 1367 kip->send = dp8390_ipkdb_send; 1368 1369 return 0; 1370 } 1371 1372 /* 1373 * Similar to dp8390_init above. 1374 */ 1375 static void 1376 dp8390_ipkdb_hwinit(kip) 1377 struct ipkdb_if *kip; 1378 { 1379 struct dp8390_softc *sc = kip->port; 1380 struct ifnet *ifp = &sc->sc_ec.ec_if; 1381 bus_space_tag_t regt = sc->sc_regt; 1382 bus_space_handle_t regh = sc->sc_regh; 1383 int i; 1384 1385 sc->txb_inuse = 0; 1386 sc->txb_new = 0; 1387 sc->txb_next_tx = 0; 1388 dp8390_stop(sc); 1389 1390 if (sc->dcr_reg & ED_DCR_LS) 1391 NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); 1392 else 1393 NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 1394 NIC_PUT(regt, regh, ED_P0_RBCR0, 0); 1395 NIC_PUT(regt, regh, ED_P0_RBCR1, 0); 1396 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); 1397 NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); 1398 if (sc->is790) 1399 NIC_PUT(regt, regh, 0x09, 0); 1400 NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); 1401 NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); 1402 NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); 1403 NIC_PUT(regt, regh, ED_P0_IMR, 0); 1404 NIC_BARRIER(regt, regh); 1405 NIC_PUT(regt, regh, ED_P0_ISR, 0xff); 1406 1407 NIC_BARRIER(regt, regh); 1408 NIC_PUT(regt, regh, ED_P0_CR, 1409 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); 1410 NIC_BARRIER(regt, regh); 1411 1412 for (i = 0; i < sizeof kip->myenetaddr; i++) 1413 NIC_PUT(regt, regh, ED_P1_PAR0 + i, kip->myenetaddr[i]); 1414 /* multicast filter? */ 1415 1416 sc->next_packet = sc->rec_page_start + 1; 1417 NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); 1418 1419 NIC_BARRIER(regt, regh); 1420 NIC_PUT(regt, regh, ED_P1_CR, 1421 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 1422 NIC_BARRIER(regt, regh); 1423 1424 /* promiscuous mode? */ 1425 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_AB | ED_RCR_AM | sc->rcr_proto); 1426 NIC_PUT(regt, regh, ED_P0_TCR, 0); 1427 1428 /* card-specific initialization? */ 1429 1430 NIC_BARRIER(regt, regh); 1431 NIC_PUT(regt, regh, ED_P0_CR, 1432 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1433 1434 ifp->if_flags &= ~IFF_OACTIVE; 1435 } 1436 1437 static void 1438 dp8390_ipkdb_init(kip) 1439 struct ipkdb_if *kip; 1440 { 1441 struct dp8390_softc *sc = kip->port; 1442 bus_space_tag_t regt = sc->sc_regt; 1443 bus_space_handle_t regh = sc->sc_regh; 1444 u_char cmd; 1445 1446 cmd = NIC_GET(regt, regh, ED_P0_CR) & ~(ED_CR_PAGE_3 | ED_CR_STA); 1447 1448 /* Select page 0 */ 1449 NIC_BARRIER(regt, regh); 1450 NIC_PUT(regt, regh, ED_P0_CR, cmd | ED_CR_PAGE_0 | ED_CR_STP); 1451 NIC_BARRIER(regt, regh); 1452 1453 /* If not started, init chip */ 1454 if (cmd & ED_CR_STP) 1455 dp8390_ipkdb_hwinit(kip); 1456 1457 /* If output active, wait for packets to drain */ 1458 while (sc->txb_inuse) { 1459 while (!(cmd = (NIC_GET(regt, regh, ED_P0_ISR) 1460 & (ED_ISR_PTX | ED_ISR_TXE)))) 1461 DELAY(1); 1462 NIC_PUT(regt, regh, ED_P0_ISR, cmd); 1463 if (--sc->txb_inuse) 1464 dp8390_xmit(sc); 1465 } 1466 } 1467 1468 static void 1469 dp8390_ipkdb_leave(kip) 1470 struct ipkdb_if *kip; 1471 { 1472 struct dp8390_softc *sc = kip->port; 1473 struct ifnet *ifp = &sc->sc_ec.ec_if; 1474 1475 ifp->if_timer = 0; 1476 } 1477 1478 /* 1479 * Similar to dp8390_intr above. 1480 */ 1481 static int 1482 dp8390_ipkdb_rcv(kip, buf, poll) 1483 struct ipkdb_if *kip; 1484 u_char *buf; 1485 int poll; 1486 { 1487 struct dp8390_softc *sc = kip->port; 1488 bus_space_tag_t regt = sc->sc_regt; 1489 bus_space_handle_t regh = sc->sc_regh; 1490 u_char bnry, current, isr; 1491 int len, nlen, packet_ptr; 1492 struct dp8390_ring packet_hdr; 1493 1494 /* Switch to page 0. */ 1495 NIC_BARRIER(regt, regh); 1496 NIC_PUT(regt, regh, ED_P0_CR, 1497 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1498 NIC_BARRIER(regt, regh); 1499 1500 while (1) { 1501 isr = NIC_GET(regt, regh, ED_P0_ISR); 1502 NIC_PUT(regt, regh, ED_P0_ISR, isr); 1503 1504 if (isr & (ED_ISR_PRX | ED_ISR_TXE)) { 1505 NIC_GET(regt, regh, ED_P0_NCR); 1506 NIC_GET(regt, regh, ED_P0_TSR); 1507 } 1508 1509 if (isr & ED_ISR_OVW) { 1510 dp8390_ipkdb_hwinit(kip); 1511 continue; 1512 } 1513 1514 if (isr & ED_ISR_CNT) { 1515 NIC_GET(regt, regh, ED_P0_CNTR0); 1516 NIC_GET(regt, regh, ED_P0_CNTR1); 1517 NIC_GET(regt, regh, ED_P0_CNTR2); 1518 } 1519 1520 /* Similar to dp8390_rint above. */ 1521 NIC_BARRIER(regt, regh); 1522 NIC_PUT(regt, regh, ED_P0_CR, 1523 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 1524 NIC_BARRIER(regt, regh); 1525 1526 current = NIC_GET(regt, regh, ED_P1_CURR); 1527 1528 NIC_BARRIER(regt, regh); 1529 NIC_PUT(regt, regh, ED_P1_CR, 1530 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1531 NIC_BARRIER(regt, regh); 1532 1533 if (sc->next_packet == current) { 1534 if (poll) 1535 return 0; 1536 continue; 1537 } 1538 1539 packet_ptr = sc->mem_ring 1540 + ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); 1541 sc->read_hdr(sc, packet_ptr, &packet_hdr); 1542 len = packet_hdr.count; 1543 nlen = packet_hdr.next_packet - sc->next_packet; 1544 if (nlen < 0) 1545 nlen += sc->rec_page_stop - sc->rec_page_start; 1546 nlen--; 1547 if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) 1548 nlen--; 1549 len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); 1550 len -= sizeof(packet_hdr); 1551 1552 if (len <= ETHERMTU 1553 && packet_hdr.next_packet >= sc->rec_page_start 1554 && packet_hdr.next_packet < sc->rec_page_stop) { 1555 sc->ring_copy(sc, packet_ptr + sizeof(packet_hdr), 1556 buf, len); 1557 sc->next_packet = packet_hdr.next_packet; 1558 bnry = sc->next_packet - 1; 1559 if (bnry < sc->rec_page_start) 1560 bnry = sc->rec_page_stop - 1; 1561 NIC_PUT(regt, regh, ED_P0_BNRY, bnry); 1562 return len; 1563 } 1564 1565 dp8390_ipkdb_hwinit(kip); 1566 } 1567 } 1568 1569 static void 1570 dp8390_ipkdb_send(kip, buf, l) 1571 struct ipkdb_if *kip; 1572 u_char *buf; 1573 int l; 1574 { 1575 struct dp8390_softc *sc = kip->port; 1576 bus_space_tag_t regt = sc->sc_regt; 1577 bus_space_handle_t regh = sc->sc_regh; 1578 struct mbuf mb; 1579 1580 mb.m_next = NULL; 1581 mb.m_pkthdr.len = mb.m_len = l; 1582 mb.m_data = buf; 1583 mb.m_flags = M_EXT | M_PKTHDR; 1584 mb.m_type = MT_DATA; 1585 1586 l = sc->write_mbuf(sc, &mb, 1587 sc->mem_start + ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT)); 1588 sc->txb_len[sc->txb_new] = max(l, ETHER_MIN_LEN - ETHER_CRC_LEN); 1589 1590 if (++sc->txb_new == sc->txb_cnt) 1591 sc->txb_new = 0; 1592 1593 sc->txb_inuse++; 1594 dp8390_xmit(sc); 1595 1596 while (!(NIC_GET(regt, regh, ED_P0_ISR) & (ED_ISR_PTX | ED_ISR_TXE))) 1597 DELAY(1); 1598 1599 sc->txb_inuse--; 1600 } 1601 #endif
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