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sys/dev/ic/dp8390.c
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1 /* $NetBSD: dp8390.c,v 1.61 2006/11/16 01:32:51 christos 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 1.61 2006/11/16 01:32:51 christos 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 <machine/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, caddr_t, 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 + (sc->rec_page_start << ED_PAGE_SHIFT); 122 sc->mem_end = sc->mem_start + sc->mem_size; 123 124 /* Now zero memory and verify that it is clear. */ 125 if ((*sc->test_mem)(sc)) 126 goto out; 127 128 /* Set interface to stopped condition (reset). */ 129 dp8390_stop(sc); 130 131 /* Initialize ifnet structure. */ 132 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 133 ifp->if_softc = sc; 134 ifp->if_start = dp8390_start; 135 ifp->if_ioctl = dp8390_ioctl; 136 if (!ifp->if_watchdog) 137 ifp->if_watchdog = dp8390_watchdog; 138 ifp->if_flags = 139 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 140 IFQ_SET_READY(&ifp->if_snd); 141 142 /* Print additional info when attached. */ 143 printf("%s: Ethernet address %s\n", sc->sc_dev.dv_xname, 144 ether_sprintf(sc->sc_enaddr)); 145 146 /* Initialize media goo. */ 147 (*sc->sc_media_init)(sc); 148 149 /* 150 * We can support 802.1Q VLAN-sized frames. 151 */ 152 sc->sc_ec.ec_capabilities |= ETHERCAP_VLAN_MTU; 153 154 /* Attach the interface. */ 155 if_attach(ifp); 156 ether_ifattach(ifp, sc->sc_enaddr); 157 158 #if NRND > 0 159 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 160 RND_TYPE_NET, 0); 161 #endif 162 163 /* The attach is successful. */ 164 sc->sc_flags |= DP8390_ATTACHED; 165 166 rv = 0; 167 out: 168 return (rv); 169 } 170 171 /* 172 * Media change callback. 173 */ 174 int 175 dp8390_mediachange(ifp) 176 struct ifnet *ifp; 177 { 178 struct dp8390_softc *sc = ifp->if_softc; 179 180 if (sc->sc_mediachange) 181 return ((*sc->sc_mediachange)(sc)); 182 return (0); 183 } 184 185 /* 186 * Media status callback. 187 */ 188 void 189 dp8390_mediastatus(ifp, ifmr) 190 struct ifnet *ifp; 191 struct ifmediareq *ifmr; 192 { 193 struct dp8390_softc *sc = ifp->if_softc; 194 195 if (sc->sc_enabled == 0) { 196 ifmr->ifm_active = IFM_ETHER | IFM_NONE; 197 ifmr->ifm_status = 0; 198 return; 199 } 200 201 if (sc->sc_mediastatus) 202 (*sc->sc_mediastatus)(sc, ifmr); 203 } 204 205 /* 206 * Reset interface. 207 */ 208 void 209 dp8390_reset(sc) 210 struct dp8390_softc *sc; 211 { 212 int s; 213 214 s = splnet(); 215 dp8390_stop(sc); 216 dp8390_init(sc); 217 splx(s); 218 } 219 220 /* 221 * Take interface offline. 222 */ 223 void 224 dp8390_stop(sc) 225 struct dp8390_softc *sc; 226 { 227 bus_space_tag_t regt = sc->sc_regt; 228 bus_space_handle_t regh = sc->sc_regh; 229 int n = 5000; 230 231 /* Stop everything on the interface, and select page 0 registers. */ 232 NIC_BARRIER(regt, regh); 233 NIC_PUT(regt, regh, ED_P0_CR, 234 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 235 NIC_BARRIER(regt, regh); 236 237 /* 238 * Wait for interface to enter stopped state, but limit # of checks to 239 * 'n' (about 5ms). It shouldn't even take 5us on modern DS8390's, but 240 * just in case it's an old one. 241 */ 242 while (((NIC_GET(regt, regh, 243 ED_P0_ISR) & ED_ISR_RST) == 0) && --n) 244 DELAY(1); 245 246 if (sc->stop_card != NULL) 247 (*sc->stop_card)(sc); 248 } 249 250 /* 251 * Device timeout/watchdog routine. Entered if the device neglects to generate 252 * an interrupt after a transmit has been started on it. 253 */ 254 255 void 256 dp8390_watchdog(ifp) 257 struct ifnet *ifp; 258 { 259 struct dp8390_softc *sc = ifp->if_softc; 260 261 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 262 ++sc->sc_ec.ec_if.if_oerrors; 263 264 dp8390_reset(sc); 265 } 266 267 /* 268 * Initialize device. 269 */ 270 void 271 dp8390_init(sc) 272 struct dp8390_softc *sc; 273 { 274 bus_space_tag_t regt = sc->sc_regt; 275 bus_space_handle_t regh = sc->sc_regh; 276 struct ifnet *ifp = &sc->sc_ec.ec_if; 277 u_int8_t mcaf[8]; 278 int i; 279 280 /* 281 * Initialize the NIC in the exact order outlined in the NS manual. 282 * This init procedure is "mandatory"...don't change what or when 283 * things happen. 284 */ 285 286 /* Reset transmitter flags. */ 287 ifp->if_timer = 0; 288 289 sc->txb_inuse = 0; 290 sc->txb_new = 0; 291 sc->txb_next_tx = 0; 292 293 /* Set interface for page 0, remote DMA complete, stopped. */ 294 NIC_BARRIER(regt, regh); 295 NIC_PUT(regt, regh, ED_P0_CR, 296 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 297 NIC_BARRIER(regt, regh); 298 299 if (sc->dcr_reg & ED_DCR_LS) { 300 NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); 301 } else { 302 /* 303 * Set FIFO threshold to 8, No auto-init Remote DMA, byte 304 * order=80x86, byte-wide DMA xfers, 305 */ 306 NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 307 } 308 309 /* Clear remote byte count registers. */ 310 NIC_PUT(regt, regh, ED_P0_RBCR0, 0); 311 NIC_PUT(regt, regh, ED_P0_RBCR1, 0); 312 313 /* Tell RCR to do nothing for now. */ 314 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); 315 316 /* Place NIC in internal loopback mode. */ 317 NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); 318 319 /* Set lower bits of byte addressable framing to 0. */ 320 if (sc->is790) 321 NIC_PUT(regt, regh, 0x09, 0); 322 323 /* Initialize receive buffer ring. */ 324 NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); 325 NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); 326 NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); 327 328 /* 329 * Enable the following interrupts: receive/transmit complete, 330 * receive/transmit error, and Receiver OverWrite. 331 * 332 * Counter overflow and Remote DMA complete are *not* enabled. 333 */ 334 NIC_PUT(regt, regh, ED_P0_IMR, 335 ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | 336 ED_IMR_OVWE); 337 338 /* 339 * Clear all interrupts. A '1' in each bit position clears the 340 * corresponding flag. 341 */ 342 NIC_PUT(regt, regh, ED_P0_ISR, 0xff); 343 344 /* Program command register for page 1. */ 345 NIC_BARRIER(regt, regh); 346 NIC_PUT(regt, regh, ED_P0_CR, 347 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); 348 NIC_BARRIER(regt, regh); 349 350 /* Copy out our station address. */ 351 for (i = 0; i < ETHER_ADDR_LEN; ++i) 352 NIC_PUT(regt, regh, ED_P1_PAR0 + i, 353 LLADDR(ifp->if_sadl)[i]); 354 355 /* Set multicast filter on chip. */ 356 dp8390_getmcaf(&sc->sc_ec, mcaf); 357 for (i = 0; i < 8; i++) 358 NIC_PUT(regt, regh, ED_P1_MAR0 + i, mcaf[i]); 359 360 /* 361 * Set current page pointer to one page after the boundary pointer, as 362 * recommended in the National manual. 363 */ 364 sc->next_packet = sc->rec_page_start + 1; 365 NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); 366 367 /* Program command register for page 0. */ 368 NIC_BARRIER(regt, regh); 369 NIC_PUT(regt, regh, ED_P1_CR, 370 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 371 NIC_BARRIER(regt, regh); 372 373 /* Accept broadcast and multicast packets by default. */ 374 i = ED_RCR_AB | ED_RCR_AM | sc->rcr_proto; 375 if (ifp->if_flags & IFF_PROMISC) { 376 /* 377 * Set promiscuous mode. Multicast filter was set earlier so 378 * that we should receive all multicast packets. 379 */ 380 i |= ED_RCR_PRO | ED_RCR_AR | ED_RCR_SEP; 381 } 382 NIC_PUT(regt, regh, ED_P0_RCR, i); 383 384 /* Take interface out of loopback. */ 385 NIC_PUT(regt, regh, ED_P0_TCR, 0); 386 387 /* Do any card-specific initialization, if applicable. */ 388 if (sc->init_card) 389 (*sc->init_card)(sc); 390 391 /* Fire up the interface. */ 392 NIC_BARRIER(regt, regh); 393 NIC_PUT(regt, regh, ED_P0_CR, 394 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 395 396 /* Set 'running' flag, and clear output active flag. */ 397 ifp->if_flags |= IFF_RUNNING; 398 ifp->if_flags &= ~IFF_OACTIVE; 399 400 /* ...and attempt to start output. */ 401 dp8390_start(ifp); 402 } 403 404 /* 405 * This routine actually starts the transmission on the interface. 406 */ 407 static inline void 408 dp8390_xmit(sc) 409 struct dp8390_softc *sc; 410 { 411 bus_space_tag_t regt = sc->sc_regt; 412 bus_space_handle_t regh = sc->sc_regh; 413 struct ifnet *ifp = &sc->sc_ec.ec_if; 414 u_short len; 415 416 #ifdef DIAGNOSTIC 417 if ((sc->txb_next_tx + sc->txb_inuse) % sc->txb_cnt != sc->txb_new) 418 panic("dp8390_xmit: desync, next_tx=%d inuse=%d cnt=%d new=%d", 419 sc->txb_next_tx, sc->txb_inuse, sc->txb_cnt, sc->txb_new); 420 421 if (sc->txb_inuse == 0) 422 panic("dp8390_xmit: no packets to xmit"); 423 #endif 424 425 len = sc->txb_len[sc->txb_next_tx]; 426 427 /* Set NIC for page 0 register access. */ 428 NIC_BARRIER(regt, regh); 429 NIC_PUT(regt, regh, ED_P0_CR, 430 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 431 NIC_BARRIER(regt, regh); 432 433 /* Set TX buffer start page. */ 434 NIC_PUT(regt, regh, ED_P0_TPSR, sc->tx_page_start + 435 sc->txb_next_tx * ED_TXBUF_SIZE); 436 437 /* Set TX length. */ 438 NIC_PUT(regt, regh, ED_P0_TBCR0, len); 439 NIC_PUT(regt, regh, ED_P0_TBCR1, len >> 8); 440 441 /* Set page 0, remote DMA complete, transmit packet, and *start*. */ 442 NIC_BARRIER(regt, regh); 443 NIC_PUT(regt, regh, ED_P0_CR, 444 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_TXP | ED_CR_STA); 445 446 /* Point to next transmit buffer slot and wrap if necessary. */ 447 if (++sc->txb_next_tx == sc->txb_cnt) 448 sc->txb_next_tx = 0; 449 450 /* Set a timer just in case we never hear from the board again. */ 451 ifp->if_timer = 2; 452 } 453 454 /* 455 * Start output on interface. 456 * We make two assumptions here: 457 * 1) that the current priority is set to splnet _before_ this code 458 * is called *and* is returned to the appropriate priority after 459 * return 460 * 2) that the IFF_OACTIVE flag is checked before this code is called 461 * (i.e. that the output part of the interface is idle) 462 */ 463 void 464 dp8390_start(ifp) 465 struct ifnet *ifp; 466 { 467 struct dp8390_softc *sc = ifp->if_softc; 468 struct mbuf *m0; 469 int buffer; 470 int len; 471 472 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 473 return; 474 475 outloop: 476 /* See if there is room to put another packet in the buffer. */ 477 if (sc->txb_inuse == sc->txb_cnt) { 478 /* No room. Indicate this to the outside world and exit. */ 479 ifp->if_flags |= IFF_OACTIVE; 480 return; 481 } 482 IFQ_DEQUEUE(&ifp->if_snd, m0); 483 if (m0 == 0) 484 return; 485 486 /* We need to use m->m_pkthdr.len, so require the header */ 487 if ((m0->m_flags & M_PKTHDR) == 0) 488 panic("dp8390_start: no header mbuf"); 489 490 #if NBPFILTER > 0 491 /* Tap off here if there is a BPF listener. */ 492 if (ifp->if_bpf) 493 bpf_mtap(ifp->if_bpf, m0); 494 #endif 495 496 /* txb_new points to next open buffer slot. */ 497 buffer = sc->mem_start + 498 ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT); 499 500 if (sc->write_mbuf) 501 len = (*sc->write_mbuf)(sc, m0, buffer); 502 else 503 len = dp8390_write_mbuf(sc, m0, buffer); 504 505 m_freem(m0); 506 sc->txb_len[sc->txb_new] = len; 507 508 /* Point to next buffer slot and wrap if necessary. */ 509 if (++sc->txb_new == sc->txb_cnt) 510 sc->txb_new = 0; 511 512 /* Start the first packet transmitting. */ 513 if (sc->txb_inuse++ == 0) 514 dp8390_xmit(sc); 515 516 /* Loop back to the top to possibly buffer more packets. */ 517 goto outloop; 518 } 519 520 /* 521 * Ethernet interface receiver interrupt. 522 */ 523 void 524 dp8390_rint(sc) 525 struct dp8390_softc *sc; 526 { 527 bus_space_tag_t regt = sc->sc_regt; 528 bus_space_handle_t regh = sc->sc_regh; 529 struct dp8390_ring packet_hdr; 530 int packet_ptr; 531 u_short len; 532 u_char boundary, current; 533 u_char nlen; 534 535 loop: 536 /* Set NIC to page 1 registers to get 'current' pointer. */ 537 NIC_BARRIER(regt, regh); 538 NIC_PUT(regt, regh, ED_P0_CR, 539 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 540 NIC_BARRIER(regt, regh); 541 542 /* 543 * 'sc->next_packet' is the logical beginning of the ring-buffer - i.e. 544 * it points to where new data has been buffered. The 'CURR' (current) 545 * register points to the logical end of the ring-buffer - i.e. it 546 * points to where additional new data will be added. We loop here 547 * until the logical beginning equals the logical end (or in other 548 * words, until the ring-buffer is empty). 549 */ 550 current = NIC_GET(regt, regh, ED_P1_CURR); 551 if (sc->next_packet == current) 552 return; 553 554 /* Set NIC to page 0 registers to update boundary register. */ 555 NIC_BARRIER(regt, regh); 556 NIC_PUT(regt, regh, ED_P1_CR, 557 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 558 NIC_BARRIER(regt, regh); 559 560 do { 561 /* Get pointer to this buffer's header structure. */ 562 packet_ptr = sc->mem_ring + 563 ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); 564 565 if (sc->read_hdr) 566 (*sc->read_hdr)(sc, packet_ptr, &packet_hdr); 567 else 568 dp8390_read_hdr(sc, packet_ptr, &packet_hdr); 569 len = packet_hdr.count; 570 571 /* 572 * Try do deal with old, buggy chips that sometimes duplicate 573 * the low byte of the length into the high byte. We do this 574 * by simply ignoring the high byte of the length and always 575 * recalculating it. 576 * 577 * NOTE: sc->next_packet is pointing at the current packet. 578 */ 579 if (packet_hdr.next_packet >= sc->next_packet) 580 nlen = (packet_hdr.next_packet - sc->next_packet); 581 else 582 nlen = ((packet_hdr.next_packet - sc->rec_page_start) + 583 (sc->rec_page_stop - sc->next_packet)); 584 --nlen; 585 if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) 586 --nlen; 587 len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); 588 #ifdef DIAGNOSTIC 589 if (len != packet_hdr.count) { 590 printf("%s: length does not match " 591 "next packet pointer\n", sc->sc_dev.dv_xname); 592 printf("%s: len %04x nlen %04x start %02x " 593 "first %02x curr %02x next %02x stop %02x\n", 594 sc->sc_dev.dv_xname, packet_hdr.count, len, 595 sc->rec_page_start, sc->next_packet, current, 596 packet_hdr.next_packet, sc->rec_page_stop); 597 } 598 #endif 599 600 /* 601 * Be fairly liberal about what we allow as a "reasonable" 602 * length so that a [crufty] packet will make it to BPF (and 603 * can thus be analyzed). Note that all that is really 604 * important is that we have a length that will fit into one 605 * mbuf cluster or less; the upper layer protocols can then 606 * figure out the length from their own length field(s). 607 */ 608 if (len <= MCLBYTES && 609 packet_hdr.next_packet >= sc->rec_page_start && 610 packet_hdr.next_packet < sc->rec_page_stop) { 611 /* Go get packet. */ 612 dp8390_read(sc, 613 packet_ptr + sizeof(struct dp8390_ring), 614 len - sizeof(struct dp8390_ring)); 615 } else { 616 /* Really BAD. The ring pointers are corrupted. */ 617 log(LOG_ERR, "%s: NIC memory corrupt - " 618 "invalid packet length %d\n", 619 sc->sc_dev.dv_xname, len); 620 ++sc->sc_ec.ec_if.if_ierrors; 621 dp8390_reset(sc); 622 return; 623 } 624 625 /* Update next packet pointer. */ 626 sc->next_packet = packet_hdr.next_packet; 627 628 /* 629 * Update NIC boundary pointer - being careful to keep it one 630 * buffer behind (as recommended by NS databook). 631 */ 632 boundary = sc->next_packet - 1; 633 if (boundary < sc->rec_page_start) 634 boundary = sc->rec_page_stop - 1; 635 NIC_PUT(regt, regh, ED_P0_BNRY, boundary); 636 } while (sc->next_packet != current); 637 638 goto loop; 639 } 640 641 /* Ethernet interface interrupt processor. */ 642 int 643 dp8390_intr(arg) 644 void *arg; 645 { 646 struct dp8390_softc *sc = (struct dp8390_softc *)arg; 647 bus_space_tag_t regt = sc->sc_regt; 648 bus_space_handle_t regh = sc->sc_regh; 649 struct ifnet *ifp = &sc->sc_ec.ec_if; 650 u_char isr; 651 #if NRND > 0 652 u_char rndisr; 653 #endif 654 655 if (sc->sc_enabled == 0 || 656 !device_is_active(&sc->sc_dev)) 657 return (0); 658 659 /* Set NIC to page 0 registers. */ 660 NIC_BARRIER(regt, regh); 661 NIC_PUT(regt, regh, ED_P0_CR, 662 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 663 NIC_BARRIER(regt, regh); 664 665 isr = NIC_GET(regt, regh, ED_P0_ISR); 666 if (!isr) 667 return (0); 668 669 #if NRND > 0 670 rndisr = isr; 671 #endif 672 673 /* Loop until there are no more new interrupts. */ 674 for (;;) { 675 /* 676 * Reset all the bits that we are 'acknowledging' by writing a 677 * '1' to each bit position that was set. 678 * (Writing a '1' *clears* the bit.) 679 */ 680 NIC_PUT(regt, regh, ED_P0_ISR, isr); 681 682 /* Work around for AX88190 bug */ 683 if ((sc->sc_flags & DP8390_DO_AX88190_WORKAROUND) != 0) 684 while ((NIC_GET(regt, regh, ED_P0_ISR) & isr) != 0) { 685 NIC_PUT(regt, regh, ED_P0_ISR, 0); 686 NIC_PUT(regt, regh, ED_P0_ISR, isr); 687 } 688 689 /* 690 * Handle transmitter interrupts. Handle these first because 691 * the receiver will reset the board under some conditions. 692 * 693 * If the chip was reset while a packet was transmitting, it 694 * may still deliver a TX interrupt. In this case, just ignore 695 * the interrupt. 696 */ 697 if (isr & (ED_ISR_PTX | ED_ISR_TXE) && 698 sc->txb_inuse != 0) { 699 u_char collisions = 700 NIC_GET(regt, regh, ED_P0_NCR) & 0x0f; 701 702 /* 703 * Check for transmit error. If a TX completed with an 704 * error, we end up throwing the packet away. Really 705 * the only error that is possible is excessive 706 * collisions, and in this case it is best to allow the 707 * automatic mechanisms of TCP to backoff the flow. Of 708 * course, with UDP we're screwed, but this is expected 709 * when a network is heavily loaded. 710 */ 711 if (isr & ED_ISR_TXE) { 712 /* 713 * Excessive collisions (16). 714 */ 715 if ((NIC_GET(regt, regh, ED_P0_TSR) 716 & ED_TSR_ABT) && (collisions == 0)) { 717 /* 718 * When collisions total 16, the P0_NCR 719 * will indicate 0, and the TSR_ABT is 720 * set. 721 */ 722 collisions = 16; 723 } 724 725 /* Update output errors counter. */ 726 ++ifp->if_oerrors; 727 } else { 728 /* 729 * Throw away the non-error status bits. 730 * 731 * XXX 732 * It may be useful to detect loss of carrier 733 * and late collisions here. 734 */ 735 (void)NIC_GET(regt, regh, ED_P0_TSR); 736 737 /* 738 * Update total number of successfully 739 * transmitted packets. 740 */ 741 ++ifp->if_opackets; 742 } 743 744 /* Clear watchdog timer. */ 745 ifp->if_timer = 0; 746 ifp->if_flags &= ~IFF_OACTIVE; 747 748 /* 749 * Add in total number of collisions on last 750 * transmission. 751 */ 752 ifp->if_collisions += collisions; 753 754 /* 755 * Decrement buffer in-use count if not zero (can only 756 * be zero if a transmitter interrupt occurred while not 757 * actually transmitting). 758 * If data is ready to transmit, start it transmitting, 759 * otherwise defer until after handling receiver. 760 */ 761 if (--sc->txb_inuse != 0) 762 dp8390_xmit(sc); 763 } 764 765 /* Handle receiver interrupts. */ 766 if (isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) { 767 /* 768 * Overwrite warning. In order to make sure that a 769 * lockup of the local DMA hasn't occurred, we reset 770 * and re-init the NIC. The NSC manual suggests only a 771 * partial reset/re-init is necessary - but some chips 772 * seem to want more. The DMA lockup has been seen 773 * only with early rev chips - Methinks this bug was 774 * fixed in later revs. -DG 775 */ 776 if (isr & ED_ISR_OVW) { 777 ++ifp->if_ierrors; 778 #ifdef DIAGNOSTIC 779 log(LOG_WARNING, "%s: warning - receiver " 780 "ring buffer overrun\n", 781 sc->sc_dev.dv_xname); 782 #endif 783 /* Stop/reset/re-init NIC. */ 784 dp8390_reset(sc); 785 } else { 786 /* 787 * Receiver Error. One or more of: CRC error, 788 * frame alignment error FIFO overrun, or 789 * missed packet. 790 */ 791 if (isr & ED_ISR_RXE) { 792 ++ifp->if_ierrors; 793 #ifdef DEBUG 794 if (dp8390_debug) { 795 printf("%s: receive error %x\n", 796 sc->sc_dev.dv_xname, 797 NIC_GET(regt, regh, 798 ED_P0_RSR)); 799 } 800 #endif 801 } 802 803 /* 804 * Go get the packet(s) 805 * XXX - Doing this on an error is dubious 806 * because there shouldn't be any data to get 807 * (we've configured the interface to not 808 * accept packets with errors). 809 */ 810 if (sc->recv_int) 811 (*sc->recv_int)(sc); 812 else 813 dp8390_rint(sc); 814 } 815 } 816 817 /* 818 * If it looks like the transmitter can take more data, attempt 819 * to start output on the interface. This is done after 820 * handling the receiver to give the receiver priority. 821 */ 822 dp8390_start(ifp); 823 824 /* 825 * Return NIC CR to standard state: page 0, remote DMA 826 * complete, start (toggling the TXP bit off, even if was just 827 * set in the transmit routine, is *okay* - it is 'edge' 828 * triggered from low to high). 829 */ 830 NIC_BARRIER(regt, regh); 831 NIC_PUT(regt, regh, ED_P0_CR, 832 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 833 NIC_BARRIER(regt, regh); 834 835 /* 836 * If the Network Talley Counters overflow, read them to reset 837 * them. It appears that old 8390's won't clear the ISR flag 838 * otherwise - resulting in an infinite loop. 839 */ 840 if (isr & ED_ISR_CNT) { 841 (void)NIC_GET(regt, regh, ED_P0_CNTR0); 842 (void)NIC_GET(regt, regh, ED_P0_CNTR1); 843 (void)NIC_GET(regt, regh, ED_P0_CNTR2); 844 } 845 846 isr = NIC_GET(regt, regh, ED_P0_ISR); 847 if (!isr) 848 goto out; 849 } 850 851 out: 852 #if NRND > 0 853 rnd_add_uint32(&sc->rnd_source, rndisr); 854 #endif 855 return (1); 856 } 857 858 /* 859 * Process an ioctl request. This code needs some work - it looks pretty ugly. 860 */ 861 int 862 dp8390_ioctl(ifp, cmd, data) 863 struct ifnet *ifp; 864 u_long cmd; 865 caddr_t data; 866 { 867 struct dp8390_softc *sc = ifp->if_softc; 868 struct ifaddr *ifa = (struct ifaddr *) data; 869 struct ifreq *ifr = (struct ifreq *) data; 870 int s, error = 0; 871 872 s = splnet(); 873 874 switch (cmd) { 875 876 case SIOCSIFADDR: 877 if ((error = dp8390_enable(sc)) != 0) 878 break; 879 ifp->if_flags |= IFF_UP; 880 881 switch (ifa->ifa_addr->sa_family) { 882 #ifdef INET 883 case AF_INET: 884 dp8390_init(sc); 885 arp_ifinit(ifp, ifa); 886 break; 887 #endif 888 default: 889 dp8390_init(sc); 890 break; 891 } 892 break; 893 894 case SIOCSIFFLAGS: 895 if ((ifp->if_flags & IFF_UP) == 0 && 896 (ifp->if_flags & IFF_RUNNING) != 0) { 897 /* 898 * If interface is marked down and it is running, then 899 * stop it. 900 */ 901 dp8390_stop(sc); 902 ifp->if_flags &= ~IFF_RUNNING; 903 dp8390_disable(sc); 904 } else if ((ifp->if_flags & IFF_UP) != 0 && 905 (ifp->if_flags & IFF_RUNNING) == 0) { 906 /* 907 * If interface is marked up and it is stopped, then 908 * start it. 909 */ 910 if ((error = dp8390_enable(sc)) != 0) 911 break; 912 dp8390_init(sc); 913 } else if ((ifp->if_flags & IFF_UP) != 0) { 914 /* 915 * Reset the interface to pick up changes in any other 916 * flags that affect hardware registers. 917 */ 918 dp8390_stop(sc); 919 dp8390_init(sc); 920 } 921 break; 922 923 case SIOCADDMULTI: 924 case SIOCDELMULTI: 925 if (sc->sc_enabled == 0) { 926 error = EIO; 927 break; 928 } 929 930 /* Update our multicast list. */ 931 error = (cmd == SIOCADDMULTI) ? 932 ether_addmulti(ifr, &sc->sc_ec) : 933 ether_delmulti(ifr, &sc->sc_ec); 934 935 if (error == ENETRESET) { 936 /* 937 * Multicast list has changed; set the hardware filter 938 * accordingly. 939 */ 940 if (ifp->if_flags & IFF_RUNNING) { 941 dp8390_stop(sc); /* XXX for ds_setmcaf? */ 942 dp8390_init(sc); 943 } 944 error = 0; 945 } 946 break; 947 948 case SIOCGIFMEDIA: 949 case SIOCSIFMEDIA: 950 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 951 break; 952 953 default: 954 error = EINVAL; 955 break; 956 } 957 958 splx(s); 959 return (error); 960 } 961 962 /* 963 * Retrieve packet from buffer memory and send to the next level up via 964 * ether_input(). If there is a BPF listener, give a copy to BPF, too. 965 */ 966 void 967 dp8390_read(sc, buf, len) 968 struct dp8390_softc *sc; 969 int buf; 970 u_short len; 971 { 972 struct ifnet *ifp = &sc->sc_ec.ec_if; 973 struct mbuf *m; 974 975 /* Pull packet off interface. */ 976 m = dp8390_get(sc, buf, len); 977 if (m == 0) { 978 ifp->if_ierrors++; 979 return; 980 } 981 982 ifp->if_ipackets++; 983 984 #if NBPFILTER > 0 985 /* 986 * Check if there's a BPF listener on this interface. 987 * If so, hand off the raw packet to bpf. 988 */ 989 if (ifp->if_bpf) 990 bpf_mtap(ifp->if_bpf, m); 991 #endif 992 993 (*ifp->if_input)(ifp, m); 994 } 995 996 997 /* 998 * Supporting routines. 999 */ 1000 1001 /* 1002 * Compute the multicast address filter from the list of multicast addresses we 1003 * need to listen to. 1004 */ 1005 void 1006 dp8390_getmcaf(ec, af) 1007 struct ethercom *ec; 1008 u_int8_t *af; 1009 { 1010 struct ifnet *ifp = &ec->ec_if; 1011 struct ether_multi *enm; 1012 u_int32_t crc; 1013 int i; 1014 struct ether_multistep step; 1015 1016 /* 1017 * Set up multicast address filter by passing all multicast addresses 1018 * through a crc generator, and then using the high order 6 bits as an 1019 * index into the 64 bit logical address filter. The high order bit 1020 * selects the word, while the rest of the bits select the bit within 1021 * the word. 1022 */ 1023 1024 if (ifp->if_flags & IFF_PROMISC) { 1025 ifp->if_flags |= IFF_ALLMULTI; 1026 for (i = 0; i < 8; i++) 1027 af[i] = 0xff; 1028 return; 1029 } 1030 for (i = 0; i < 8; i++) 1031 af[i] = 0; 1032 ETHER_FIRST_MULTI(step, ec, enm); 1033 while (enm != NULL) { 1034 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 1035 sizeof(enm->enm_addrlo)) != 0) { 1036 /* 1037 * We must listen to a range of multicast addresses. 1038 * For now, just accept all multicasts, rather than 1039 * trying to set only those filter bits needed to match 1040 * the range. (At this time, the only use of address 1041 * ranges is for IP multicast routing, for which the 1042 * range is big enough to require all bits set.) 1043 */ 1044 ifp->if_flags |= IFF_ALLMULTI; 1045 for (i = 0; i < 8; i++) 1046 af[i] = 0xff; 1047 return; 1048 } 1049 1050 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 1051 1052 /* Just want the 6 most significant bits. */ 1053 crc >>= 26; 1054 1055 /* Turn on the corresponding bit in the filter. */ 1056 af[crc >> 3] |= 1 << (crc & 0x7); 1057 1058 ETHER_NEXT_MULTI(step, enm); 1059 } 1060 ifp->if_flags &= ~IFF_ALLMULTI; 1061 } 1062 1063 /* 1064 * Copy data from receive buffer to a new mbuf chain allocating mbufs 1065 * as needed. Return pointer to first mbuf in chain. 1066 * sc = dp8390 info (softc) 1067 * src = pointer in dp8390 ring buffer 1068 * total_len = amount of data to copy 1069 */ 1070 struct mbuf * 1071 dp8390_get(sc, src, total_len) 1072 struct dp8390_softc *sc; 1073 int src; 1074 u_short total_len; 1075 { 1076 struct ifnet *ifp = &sc->sc_ec.ec_if; 1077 struct mbuf *m, *m0, *newm; 1078 u_short len; 1079 1080 MGETHDR(m0, M_DONTWAIT, MT_DATA); 1081 if (m0 == 0) 1082 return (0); 1083 m0->m_pkthdr.rcvif = ifp; 1084 m0->m_pkthdr.len = total_len; 1085 len = MHLEN; 1086 m = m0; 1087 1088 while (total_len > 0) { 1089 if (total_len >= MINCLSIZE) { 1090 MCLGET(m, M_DONTWAIT); 1091 if ((m->m_flags & M_EXT) == 0) 1092 goto bad; 1093 len = MCLBYTES; 1094 } 1095 1096 /* 1097 * Make sure the data after the Ethernet header is aligned. 1098 */ 1099 if (m == m0) { 1100 caddr_t newdata = (caddr_t) 1101 ALIGN(m->m_data + sizeof(struct ether_header)) - 1102 sizeof(struct ether_header); 1103 len -= newdata - m->m_data; 1104 m->m_data = newdata; 1105 } 1106 1107 m->m_len = len = min(total_len, len); 1108 if (sc->ring_copy) 1109 src = (*sc->ring_copy)(sc, src, mtod(m, caddr_t), len); 1110 else 1111 src = dp8390_ring_copy(sc, src, mtod(m, caddr_t), len); 1112 1113 total_len -= len; 1114 if (total_len > 0) { 1115 MGET(newm, M_DONTWAIT, MT_DATA); 1116 if (newm == 0) 1117 goto bad; 1118 len = MLEN; 1119 m = m->m_next = newm; 1120 } 1121 } 1122 1123 return (m0); 1124 1125 bad: 1126 m_freem(m0); 1127 return (0); 1128 } 1129 1130 1131 /* 1132 * Default driver support functions. 1133 * 1134 * NOTE: all support functions assume 8-bit shared memory. 1135 */ 1136 /* 1137 * Zero NIC buffer memory and verify that it is clear. 1138 */ 1139 static int 1140 dp8390_test_mem(sc) 1141 struct dp8390_softc *sc; 1142 { 1143 bus_space_tag_t buft = sc->sc_buft; 1144 bus_space_handle_t bufh = sc->sc_bufh; 1145 int i; 1146 1147 bus_space_set_region_1(buft, bufh, sc->mem_start, 0, sc->mem_size); 1148 1149 for (i = 0; i < sc->mem_size; ++i) { 1150 if (bus_space_read_1(buft, bufh, sc->mem_start + i)) { 1151 printf(": failed to clear NIC buffer at offset %x - " 1152 "check configuration\n", (sc->mem_start + i)); 1153 return 1; 1154 } 1155 } 1156 1157 return 0; 1158 } 1159 1160 /* 1161 * Read a packet header from the ring, given the source offset. 1162 */ 1163 static inline void 1164 dp8390_read_hdr(sc, src, hdrp) 1165 struct dp8390_softc *sc; 1166 int src; 1167 struct dp8390_ring *hdrp; 1168 { 1169 bus_space_tag_t buft = sc->sc_buft; 1170 bus_space_handle_t bufh = sc->sc_bufh; 1171 1172 /* 1173 * The byte count includes a 4 byte header that was added by 1174 * the NIC. 1175 */ 1176 hdrp->rsr = bus_space_read_1(buft, bufh, src); 1177 hdrp->next_packet = bus_space_read_1(buft, bufh, src + 1); 1178 hdrp->count = bus_space_read_1(buft, bufh, src + 2) | 1179 (bus_space_read_1(buft, bufh, src + 3) << 8); 1180 } 1181 1182 /* 1183 * Copy `amount' bytes from a packet in the ring buffer to a linear 1184 * destination buffer, given a source offset and destination address. 1185 * Takes into account ring-wrap. 1186 */ 1187 static inline int 1188 dp8390_ring_copy(sc, src, dst, amount) 1189 struct dp8390_softc *sc; 1190 int src; 1191 caddr_t dst; 1192 u_short amount; 1193 { 1194 bus_space_tag_t buft = sc->sc_buft; 1195 bus_space_handle_t bufh = sc->sc_bufh; 1196 u_short tmp_amount; 1197 1198 /* Does copy wrap to lower addr in ring buffer? */ 1199 if (src + amount > sc->mem_end) { 1200 tmp_amount = sc->mem_end - src; 1201 1202 /* Copy amount up to end of NIC memory. */ 1203 bus_space_read_region_1(buft, bufh, src, dst, tmp_amount); 1204 1205 amount -= tmp_amount; 1206 src = sc->mem_ring; 1207 dst += tmp_amount; 1208 } 1209 bus_space_read_region_1(buft, bufh, src, dst, amount); 1210 1211 return (src + amount); 1212 } 1213 1214 /* 1215 * Copy a packet from an mbuf to the transmit buffer on the card. 1216 * 1217 * Currently uses an extra buffer/extra memory copy, unless the whole 1218 * packet fits in one mbuf. 1219 */ 1220 static inline int 1221 dp8390_write_mbuf(sc, m, buf) 1222 struct dp8390_softc *sc; 1223 struct mbuf *m; 1224 int buf; 1225 { 1226 bus_space_tag_t buft = sc->sc_buft; 1227 bus_space_handle_t bufh = sc->sc_bufh; 1228 u_char *data; 1229 int len, totlen = 0; 1230 1231 for (; m ; m = m->m_next) { 1232 data = mtod(m, u_char *); 1233 len = m->m_len; 1234 if (len > 0) { 1235 bus_space_write_region_1(buft, bufh, buf, data, len); 1236 totlen += len; 1237 buf += len; 1238 } 1239 } 1240 if (totlen < ETHER_MIN_LEN - ETHER_CRC_LEN) { 1241 bus_space_set_region_1(buft, bufh, buf, 0, 1242 ETHER_MIN_LEN - ETHER_CRC_LEN - totlen); 1243 totlen = ETHER_MIN_LEN - ETHER_CRC_LEN; 1244 } 1245 return (totlen); 1246 } 1247 1248 /* 1249 * Enable power on the interface. 1250 */ 1251 int 1252 dp8390_enable(sc) 1253 struct dp8390_softc *sc; 1254 { 1255 1256 if (sc->sc_enabled == 0 && sc->sc_enable != NULL) { 1257 if ((*sc->sc_enable)(sc) != 0) { 1258 printf("%s: device enable failed\n", 1259 sc->sc_dev.dv_xname); 1260 return (EIO); 1261 } 1262 } 1263 1264 sc->sc_enabled = 1; 1265 return (0); 1266 } 1267 1268 /* 1269 * Disable power on the interface. 1270 */ 1271 void 1272 dp8390_disable(sc) 1273 struct dp8390_softc *sc; 1274 { 1275 1276 if (sc->sc_enabled != 0 && sc->sc_disable != NULL) { 1277 (*sc->sc_disable)(sc); 1278 sc->sc_enabled = 0; 1279 } 1280 } 1281 1282 int 1283 dp8390_activate(self, act) 1284 struct device *self; 1285 enum devact act; 1286 { 1287 struct dp8390_softc *sc = (struct dp8390_softc *)self; 1288 int rv = 0, s; 1289 1290 s = splnet(); 1291 switch (act) { 1292 case DVACT_ACTIVATE: 1293 rv = EOPNOTSUPP; 1294 break; 1295 1296 case DVACT_DEACTIVATE: 1297 if_deactivate(&sc->sc_ec.ec_if); 1298 break; 1299 } 1300 splx(s); 1301 return (rv); 1302 } 1303 1304 int 1305 dp8390_detach(struct dp8390_softc *sc, int flags) 1306 { 1307 struct ifnet *ifp = &sc->sc_ec.ec_if; 1308 1309 /* Succeed now if there's no work to do. */ 1310 if ((sc->sc_flags & DP8390_ATTACHED) == 0) 1311 return (0); 1312 1313 /* dp8390_disable() checks sc->sc_enabled */ 1314 dp8390_disable(sc); 1315 1316 if (sc->sc_media_fini != NULL) 1317 (*sc->sc_media_fini)(sc); 1318 1319 /* Delete all remaining media. */ 1320 ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY); 1321 1322 #if NRND > 0 1323 rnd_detach_source(&sc->rnd_source); 1324 #endif 1325 ether_ifdetach(ifp); 1326 if_detach(ifp); 1327 1328 return (0); 1329 } 1330 1331 #ifdef IPKDB_DP8390 1332 static void dp8390_ipkdb_hwinit(struct ipkdb_if *); 1333 static void dp8390_ipkdb_init(struct ipkdb_if *); 1334 static void dp8390_ipkdb_leave(struct ipkdb_if *); 1335 static int dp8390_ipkdb_rcv(struct ipkdb_if *, u_char *, int); 1336 static void dp8390_ipkdb_send(struct ipkdb_if *, u_char *, int); 1337 1338 /* 1339 * This is essentially similar to dp8390_config above. 1340 */ 1341 int 1342 dp8390_ipkdb_attach(kip) 1343 struct ipkdb_if *kip; 1344 { 1345 struct dp8390_softc *sc = kip->port; 1346 1347 if (sc->mem_size < 8192 * 2) 1348 sc->txb_cnt = 1; 1349 else if (sc->mem_size < 8192 * 3) 1350 sc->txb_cnt = 2; 1351 else 1352 sc->txb_cnt = 3; 1353 1354 sc->tx_page_start = sc->mem_start >> ED_PAGE_SHIFT; 1355 sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; 1356 sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); 1357 sc->mem_ring = sc->mem_start + (sc->rec_page_start << ED_PAGE_SHIFT); 1358 sc->mem_end = sc->mem_start + sc->mem_size; 1359 1360 dp8390_stop(sc); 1361 1362 kip->start = dp8390_ipkdb_init; 1363 kip->leave = dp8390_ipkdb_leave; 1364 kip->receive = dp8390_ipkdb_rcv; 1365 kip->send = dp8390_ipkdb_send; 1366 1367 return 0; 1368 } 1369 1370 /* 1371 * Similar to dp8390_init above. 1372 */ 1373 static void 1374 dp8390_ipkdb_hwinit(kip) 1375 struct ipkdb_if *kip; 1376 { 1377 struct dp8390_softc *sc = kip->port; 1378 struct ifnet *ifp = &sc->sc_ec.ec_if; 1379 bus_space_tag_t regt = sc->sc_regt; 1380 bus_space_handle_t regh = sc->sc_regh; 1381 int i; 1382 1383 sc->txb_inuse = 0; 1384 sc->txb_new = 0; 1385 sc->txb_next_tx = 0; 1386 dp8390_stop(sc); 1387 1388 if (sc->dcr_reg & ED_DCR_LS) 1389 NIC_PUT(regt, regh, ED_P0_DCR, sc->dcr_reg); 1390 else 1391 NIC_PUT(regt, regh, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); 1392 NIC_PUT(regt, regh, ED_P0_RBCR0, 0); 1393 NIC_PUT(regt, regh, ED_P0_RBCR1, 0); 1394 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_MON | sc->rcr_proto); 1395 NIC_PUT(regt, regh, ED_P0_TCR, ED_TCR_LB0); 1396 if (sc->is790) 1397 NIC_PUT(regt, regh, 0x09, 0); 1398 NIC_PUT(regt, regh, ED_P0_BNRY, sc->rec_page_start); 1399 NIC_PUT(regt, regh, ED_P0_PSTART, sc->rec_page_start); 1400 NIC_PUT(regt, regh, ED_P0_PSTOP, sc->rec_page_stop); 1401 NIC_PUT(regt, regh, ED_P0_IMR, 0); 1402 NIC_BARRIER(regt, regh); 1403 NIC_PUT(regt, regh, ED_P0_ISR, 0xff); 1404 1405 NIC_BARRIER(regt, regh); 1406 NIC_PUT(regt, regh, ED_P0_CR, 1407 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); 1408 NIC_BARRIER(regt, regh); 1409 1410 for (i = 0; i < sizeof kip->myenetaddr; i++) 1411 NIC_PUT(regt, regh, ED_P1_PAR0 + i, kip->myenetaddr[i]); 1412 /* multicast filter? */ 1413 1414 sc->next_packet = sc->rec_page_start + 1; 1415 NIC_PUT(regt, regh, ED_P1_CURR, sc->next_packet); 1416 1417 NIC_BARRIER(regt, regh); 1418 NIC_PUT(regt, regh, ED_P1_CR, 1419 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); 1420 NIC_BARRIER(regt, regh); 1421 1422 /* promiscuous mode? */ 1423 NIC_PUT(regt, regh, ED_P0_RCR, ED_RCR_AB | ED_RCR_AM | sc->rcr_proto); 1424 NIC_PUT(regt, regh, ED_P0_TCR, 0); 1425 1426 /* card-specific initialization? */ 1427 1428 NIC_BARRIER(regt, regh); 1429 NIC_PUT(regt, regh, ED_P0_CR, 1430 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1431 1432 ifp->if_flags &= ~IFF_OACTIVE; 1433 } 1434 1435 static void 1436 dp8390_ipkdb_init(kip) 1437 struct ipkdb_if *kip; 1438 { 1439 struct dp8390_softc *sc = kip->port; 1440 bus_space_tag_t regt = sc->sc_regt; 1441 bus_space_handle_t regh = sc->sc_regh; 1442 u_char cmd; 1443 1444 cmd = NIC_GET(regt, regh, ED_P0_CR) & ~(ED_CR_PAGE_3 | ED_CR_STA); 1445 1446 /* Select page 0 */ 1447 NIC_BARRIER(regt, regh); 1448 NIC_PUT(regt, regh, ED_P0_CR, cmd | ED_CR_PAGE_0 | ED_CR_STP); 1449 NIC_BARRIER(regt, regh); 1450 1451 /* If not started, init chip */ 1452 if (cmd & ED_CR_STP) 1453 dp8390_ipkdb_hwinit(kip); 1454 1455 /* If output active, wait for packets to drain */ 1456 while (sc->txb_inuse) { 1457 while (!(cmd = (NIC_GET(regt, regh, ED_P0_ISR) 1458 & (ED_ISR_PTX | ED_ISR_TXE)))) 1459 DELAY(1); 1460 NIC_PUT(regt, regh, ED_P0_ISR, cmd); 1461 if (--sc->txb_inuse) 1462 dp8390_xmit(sc); 1463 } 1464 } 1465 1466 static void 1467 dp8390_ipkdb_leave(kip) 1468 struct ipkdb_if *kip; 1469 { 1470 struct dp8390_softc *sc = kip->port; 1471 struct ifnet *ifp = &sc->sc_ec.ec_if; 1472 1473 ifp->if_timer = 0; 1474 } 1475 1476 /* 1477 * Similar to dp8390_intr above. 1478 */ 1479 static int 1480 dp8390_ipkdb_rcv(kip, buf, poll) 1481 struct ipkdb_if *kip; 1482 u_char *buf; 1483 int poll; 1484 { 1485 struct dp8390_softc *sc = kip->port; 1486 bus_space_tag_t regt = sc->sc_regt; 1487 bus_space_handle_t regh = sc->sc_regh; 1488 u_char bnry, current, isr; 1489 int len, nlen, packet_ptr; 1490 struct dp8390_ring packet_hdr; 1491 1492 /* Switch to page 0. */ 1493 NIC_BARRIER(regt, regh); 1494 NIC_PUT(regt, regh, ED_P0_CR, 1495 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1496 NIC_BARRIER(regt, regh); 1497 1498 while (1) { 1499 isr = NIC_GET(regt, regh, ED_P0_ISR); 1500 NIC_PUT(regt, regh, ED_P0_ISR, isr); 1501 1502 if (isr & (ED_ISR_PRX | ED_ISR_TXE)) { 1503 NIC_GET(regt, regh, ED_P0_NCR); 1504 NIC_GET(regt, regh, ED_P0_TSR); 1505 } 1506 1507 if (isr & ED_ISR_OVW) { 1508 dp8390_ipkdb_hwinit(kip); 1509 continue; 1510 } 1511 1512 if (isr & ED_ISR_CNT) { 1513 NIC_GET(regt, regh, ED_P0_CNTR0); 1514 NIC_GET(regt, regh, ED_P0_CNTR1); 1515 NIC_GET(regt, regh, ED_P0_CNTR2); 1516 } 1517 1518 /* Similar to dp8390_rint above. */ 1519 NIC_BARRIER(regt, regh); 1520 NIC_PUT(regt, regh, ED_P0_CR, 1521 sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); 1522 NIC_BARRIER(regt, regh); 1523 1524 current = NIC_GET(regt, regh, ED_P1_CURR); 1525 1526 NIC_BARRIER(regt, regh); 1527 NIC_PUT(regt, regh, ED_P1_CR, 1528 sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); 1529 NIC_BARRIER(regt, regh); 1530 1531 if (sc->next_packet == current) { 1532 if (poll) 1533 return 0; 1534 continue; 1535 } 1536 1537 packet_ptr = sc->mem_ring 1538 + ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); 1539 sc->read_hdr(sc, packet_ptr, &packet_hdr); 1540 len = packet_hdr.count; 1541 nlen = packet_hdr.next_packet - sc->next_packet; 1542 if (nlen < 0) 1543 nlen += sc->rec_page_stop - sc->rec_page_start; 1544 nlen--; 1545 if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) 1546 nlen--; 1547 len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); 1548 len -= sizeof(packet_hdr); 1549 1550 if (len <= ETHERMTU 1551 && packet_hdr.next_packet >= sc->rec_page_start 1552 && packet_hdr.next_packet < sc->rec_page_stop) { 1553 sc->ring_copy(sc, packet_ptr + sizeof(packet_hdr), 1554 buf, len); 1555 sc->next_packet = packet_hdr.next_packet; 1556 bnry = sc->next_packet - 1; 1557 if (bnry < sc->rec_page_start) 1558 bnry = sc->rec_page_stop - 1; 1559 NIC_PUT(regt, regh, ED_P0_BNRY, bnry); 1560 return len; 1561 } 1562 1563 dp8390_ipkdb_hwinit(kip); 1564 } 1565 } 1566 1567 static void 1568 dp8390_ipkdb_send(kip, buf, l) 1569 struct ipkdb_if *kip; 1570 u_char *buf; 1571 int l; 1572 { 1573 struct dp8390_softc *sc = kip->port; 1574 bus_space_tag_t regt = sc->sc_regt; 1575 bus_space_handle_t regh = sc->sc_regh; 1576 struct mbuf mb; 1577 1578 mb.m_next = NULL; 1579 mb.m_pkthdr.len = mb.m_len = l; 1580 mtod(&mb, u_char *) = buf; 1581 mb.m_flags = M_EXT | M_PKTHDR; 1582 mb.m_type = MT_DATA; 1583 1584 l = sc->write_mbuf(sc, &mb, 1585 sc->mem_start + ((sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT)); 1586 sc->txb_len[sc->txb_new] = max(l, ETHER_MIN_LEN - ETHER_CRC_LEN); 1587 1588 if (++sc->txb_new == sc->txb_cnt) 1589 sc->txb_new = 0; 1590 1591 sc->txb_inuse++; 1592 dp8390_xmit(sc); 1593 1594 while (!(NIC_GET(regt, regh, ED_P0_ISR) & (ED_ISR_PTX | ED_ISR_TXE))) 1595 DELAY(1); 1596 1597 sc->txb_inuse--; 1598 } 1599 #endif
Cache object: 582ca31ee8731edb92c7c38ca119ff11
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