if_iy.c revision 1.5
1 /* $NetBSD: if_iy.c,v 1.5 1996/05/22 15:39:43 is Exp $ */ 2 /* #define IYDEBUG */ 3 /* #define IYMEMDEBUG */ 4 /*- 5 * Copyright (c) 1996 Ignatios Souvatzis. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product contains software developed by Ignatios Souvatzis for 19 * the NetBSD project. 20 * 4. The names of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "bpfilter.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/mbuf.h> 41 #include <sys/buf.h> 42 #include <sys/protosw.h> 43 #include <sys/socket.h> 44 #include <sys/ioctl.h> 45 #include <sys/errno.h> 46 #include <sys/syslog.h> 47 #include <sys/device.h> 48 49 #include <net/if.h> 50 #include <net/if_types.h> 51 #include <net/if_dl.h> 52 #include <net/netisr.h> 53 #include <net/route.h> 54 55 #if NBPFILTER > 0 56 #include <net/bpf.h> 57 #include <net/bpfdesc.h> 58 #endif 59 60 #ifdef INET 61 #include <netinet/in.h> 62 #include <netinet/in_systm.h> 63 #include <netinet/in_var.h> 64 #include <netinet/ip.h> 65 #include <netinet/if_ether.h> 66 #endif 67 68 #ifdef NS 69 #include <netns/ns.h> 70 #include <netns/ns_if.h> 71 #endif 72 73 #include <vm/vm.h> 74 75 #include <machine/cpu.h> 76 #include <machine/intr.h> 77 #include <machine/pio.h> 78 79 #include <dev/isa/isareg.h> 80 #include <dev/isa/isavar.h> 81 #include <dev/ic/i82595reg.h> 82 83 #define ETHER_MIN_LEN 64 84 #define ETHER_MAX_LEN 1518 85 86 /* 87 * Ethernet status, per interface. 88 */ 89 struct iy_softc { 90 struct device sc_dev; 91 void *sc_ih; 92 93 int sc_iobase; 94 struct arpcom sc_arpcom; 95 96 #define MAX_MBS 8 97 struct mbuf *mb[MAX_MBS]; 98 int next_mb, last_mb; 99 100 int mappedirq; 101 102 int hard_vers; 103 104 int promisc; 105 106 int sram, tx_size, rx_size; 107 108 int tx_start, tx_end, tx_last; 109 int rx_start; 110 111 #ifdef IYDEBUG 112 int sc_debug; 113 #endif 114 }; 115 116 void iywatchdog __P((struct ifnet *)); 117 int iyioctl __P((struct ifnet *, u_long, caddr_t)); 118 int iyintr __P((void *)); 119 void iyinit __P((struct iy_softc *)); 120 void iystop __P((struct iy_softc *)); 121 void iystart __P((struct ifnet *)); 122 123 void iy_intr_rx __P((struct iy_softc *)); 124 void iy_intr_tx __P((struct iy_softc *)); 125 void eepro_reset_595 __P((struct iy_softc *)); 126 int eepro_probe __P((struct iy_softc *, struct isa_attach_args *)); 127 void eepro_eeprom_outbits __P((struct iy_softc *, int, int)); 128 void eepro_eeprom_clock __P((struct iy_softc *, int)); 129 u_short eepro_read_eeprom __P((struct iy_softc *, int)); 130 int eepro_eeprom_inbits __P((struct iy_softc *)); 131 132 void iyreset __P((struct iy_softc *)); 133 void iy_readframe __P((struct iy_softc *, int)); 134 void iy_drop_packet_buffer __P((struct iy_softc *)); 135 void iy_find_mem_size __P((struct iy_softc *)); 136 void iyrint __P((struct iy_softc *)); 137 void iytint __P((struct iy_softc *)); 138 void iyxmit __P((struct iy_softc *)); 139 void iyget __P((struct iy_softc *, int, int)); 140 void iymbuffill __P((void *)); 141 void iymbufempty __P((void *)); 142 void iyprobemem __P((struct iy_softc *)); 143 144 /* 145 * void iymeminit __P((void *, struct iy_softc *)); 146 * static int iy_mc_setup __P((struct iy_softc *, void *)); 147 * static void iy_mc_reset __P((struct iy_softc *)); 148 */ 149 #ifdef IYDEBUGX 150 void print_rbd __P((volatile struct iy_recv_buf_desc *)); 151 152 int in_ifrint = 0; 153 int in_iftint = 0; 154 #endif 155 156 int iyprobe __P((struct device *, void *, void *)); 157 void iyattach __P((struct device *, struct device *, void *)); 158 159 static u_int16_t eepromread __P((int, int)); 160 161 struct cfattach iy_ca = { 162 sizeof(struct iy_softc), iyprobe, iyattach 163 }; 164 165 struct cfdriver iy_cd = { 166 NULL, "iy", DV_IFNET 167 }; 168 169 static u_int8_t eepro_irqmap[] = EEPP_INTMAP; 170 static u_int8_t eepro_revirqmap[] = EEPP_RINTMAP; 171 172 int 173 iyprobe(parent, match, aux) 174 struct device *parent; 175 void *match, *aux; 176 { 177 struct iy_softc *sc = match; 178 struct isa_attach_args *ia = aux; 179 180 u_int16_t eaddr[8]; 181 int iobase; 182 int i; 183 184 u_int16_t checksum = 0; 185 u_int16_t eepromtmp; 186 u_int8_t c, d; 187 188 189 iobase = ia->ia_iobase; 190 191 if (iobase == -1) 192 return 0; 193 194 /* try to find the round robin sig: */ 195 196 /* check here for addresses already given to other devices */ 197 198 c = inb(iobase + ID_REG); 199 if (c & ID_REG_MASK != ID_REG_SIG) 200 return 0; 201 202 d = inb(iobase + ID_REG); 203 if (d & ID_REG_MASK != ID_REG_SIG) 204 return 0; 205 206 if (((d-c) & R_ROBIN_BITS) != 0x40) 207 return 0; 208 209 d = inb(iobase + ID_REG); 210 if (d & ID_REG_MASK != ID_REG_SIG) 211 return 0; 212 213 if (((d-c) & R_ROBIN_BITS) != 0x80) 214 return 0; 215 216 d = inb(iobase + ID_REG); 217 if (d & ID_REG_MASK != ID_REG_SIG) 218 return 0; 219 220 if (((d-c) & R_ROBIN_BITS) != 0xC0) 221 return 0; 222 223 d = inb(iobase + ID_REG); 224 if (d & ID_REG_MASK != ID_REG_SIG) 225 return 0; 226 227 if (((d-c) & R_ROBIN_BITS) != 0x00) 228 return 0; 229 230 #ifdef IYDEBUG 231 printf("eepro_probe verified working ID reg.\n"); 232 #endif 233 234 for (i=0; i<64; ++i) { 235 eepromtmp = eepromread(iobase, i); 236 checksum += eepromtmp; 237 if (i<(sizeof(eaddr)/sizeof(*eaddr))) 238 eaddr[i] = eepromtmp; 239 } 240 if (checksum != EEPP_CHKSUM) 241 printf("wrong EEPROM checksum 0x%x should be 0x%x\n", 242 checksum, EEPP_CHKSUM); 243 244 245 if ((eaddr[EEPPEther0] != eepromread(iobase, EEPPEther0a)) && 246 (eaddr[EEPPEther1] != eepromread(iobase, EEPPEther1a)) && 247 (eaddr[EEPPEther2] != eepromread(iobase, EEPPEther2a))) 248 printf("EEPROM Ethernet address differs from copy\n"); 249 250 sc->sc_arpcom.ac_enaddr[1] = eaddr[EEPPEther0] & 0xFF; 251 sc->sc_arpcom.ac_enaddr[0] = eaddr[EEPPEther0] >> 8; 252 sc->sc_arpcom.ac_enaddr[3] = eaddr[EEPPEther1] & 0xFF; 253 sc->sc_arpcom.ac_enaddr[2] = eaddr[EEPPEther1] >> 8; 254 sc->sc_arpcom.ac_enaddr[5] = eaddr[EEPPEther2] & 0xFF; 255 sc->sc_arpcom.ac_enaddr[4] = eaddr[EEPPEther2] >> 8; 256 257 if (ia->ia_irq == IRQUNK) 258 ia->ia_irq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; 259 260 if (ia->ia_irq >= sizeof(eepro_revirqmap)) 261 return 0; 262 263 if ((sc->mappedirq = eepro_revirqmap[ia->ia_irq]) == -1) 264 return 0; 265 266 sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev; 267 268 /* now lets reset the chip */ 269 270 outb(iobase + COMMAND_REG, RESET_CMD); 271 delay(200); 272 273 ia->ia_iobase = iobase; 274 ia->ia_iosize = 16; 275 return 1; /* found */ 276 } 277 278 void 279 iyattach(parent, self, aux) 280 struct device *parent, *self; 281 void *aux; 282 { 283 struct iy_softc *sc = (void *)self; 284 struct isa_attach_args *ia = aux; 285 struct ifnet *ifp = &sc->sc_arpcom.ac_if; 286 287 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 288 ifp->if_softc = sc; 289 ifp->if_start = iystart; 290 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 291 /* XXX todo: | IFF_MULTICAST */ 292 sc->sc_iobase = ia->ia_iobase; 293 294 iyprobemem(sc); 295 296 ifp->if_ioctl = iyioctl; 297 ifp->if_watchdog = iywatchdog; 298 299 /* Attach the interface. */ 300 if_attach(ifp); 301 ether_ifattach(ifp); 302 printf(": address %s, chip rev. %d, %d kB SRAM\n", 303 ether_sprintf(sc->sc_arpcom.ac_enaddr), 304 sc->hard_vers, sc->sram/1024); 305 #if NBPFILTER > 0 306 bpfattach(&sc->sc_arpcom.ac_if.if_bpf, ifp, DLT_EN10MB, 307 sizeof(struct ether_header)); 308 #endif 309 310 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 311 IPL_NET, iyintr, sc); 312 } 313 314 void 315 iystop(sc) 316 struct iy_softc *sc; 317 { 318 int iobase; 319 #ifdef IYDEBUG 320 u_int p, v; 321 #endif 322 323 iobase = sc->sc_iobase; 324 325 outb(iobase + COMMAND_REG, RCV_DISABLE_CMD); 326 327 outb(iobase + INT_MASK_REG, ALL_INTS); 328 outb(iobase + STATUS_REG, ALL_INTS); 329 330 outb(iobase + COMMAND_REG, RESET_CMD); 331 delay(200); 332 #ifdef IYDEBUG 333 printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n", 334 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 335 p = sc->tx_last; 336 if (!p) 337 p = sc->tx_start; 338 do { 339 outw(iobase + HOST_ADDR_REG, p); 340 v = inw(iobase + MEM_PORT_REG); 341 printf("0x%04x: %b ", p, v, "\020\006Ab\010Dn"); 342 v = inw(iobase + MEM_PORT_REG); 343 printf("0x%b", v, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL"); 344 p = inw(iobase + MEM_PORT_REG); 345 printf(" 0x%04x", p); 346 v = inw(iobase + MEM_PORT_REG); 347 printf(" 0x%b\n", v, "\020\020Ch"); 348 349 } while (v & 0x8000); 350 #endif 351 sc->tx_start = sc->tx_end = sc->rx_size; 352 sc->tx_last = 0; 353 sc->sc_arpcom.ac_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 354 355 iymbufempty((void *)sc); 356 } 357 358 void 359 iyreset(sc) 360 struct iy_softc *sc; 361 { 362 int s; 363 s = splimp(); 364 iystop(sc); 365 iyinit(sc); 366 splx(s); 367 } 368 369 void 370 iyinit(sc) 371 struct iy_softc *sc; 372 { 373 int i; 374 unsigned temp; 375 struct ifnet *ifp; 376 int iobase; 377 378 ifp = &sc->sc_arpcom.ac_if; 379 #ifdef IYDEBUG 380 printf("ifp is %p\n", ifp); 381 #endif 382 iobase = sc->sc_iobase; 383 384 outb(iobase, BANK_SEL(2)); 385 386 temp = inb(iobase + EEPROM_REG); 387 if (temp & 0x10) 388 outb(iobase + EEPROM_REG, temp & ~0x10); 389 390 for (i=0; i<6; ++i) { 391 outb(iobase + I_ADD(i), sc->sc_arpcom.ac_enaddr[i]); 392 } 393 394 temp = inb(iobase + REG1); 395 outb(iobase + REG1, temp | XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | 396 RCV_DISCARD_BAD); 397 398 temp = inb(iobase + RECV_MODES_REG); 399 outb(iobase + RECV_MODES_REG, temp | MATCH_BRDCST); 400 #ifdef IYDEBUG 401 printf("%s: RECV_MODES were %b set to %b\n", 402 sc->sc_dev.dv_xname, 403 temp, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA", 404 temp|MATCH_BRDCST, 405 "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA"); 406 #endif 407 408 409 DELAY(500000); /* for the hardware to test for the connector */ 410 411 temp = inb(iobase + MEDIA_SELECT); 412 #ifdef IYDEBUG 413 printf("%s: media select was 0x%b ", sc->sc_dev.dv_xname, 414 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 415 #endif 416 temp = (temp & TEST_MODE_MASK); 417 418 switch(ifp->if_flags & (IFF_LINK0 | IFF_LINK1)) { 419 case IFF_LINK0: 420 temp &= ~ (BNC_BIT | TPE_BIT); 421 break; 422 423 case IFF_LINK1: 424 temp = temp & ~TPE_BIT | BNC_BIT; 425 break; 426 427 case IFF_LINK0|IFF_LINK1: 428 temp = temp & ~BNC_BIT | TPE_BIT; 429 break; 430 default: 431 /* nothing; leave as it is */ 432 } 433 434 outb(iobase + MEDIA_SELECT, temp); 435 #ifdef IYDEBUG 436 printf("changed to 0x%b\n", 437 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 438 #endif 439 440 outb(iobase, BANK_SEL(1)); 441 442 temp = inb(iobase + INT_NO_REG); 443 outb(iobase + INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 444 445 #ifdef IYDEBUG 446 printf("%s: int no was %b\n", sc->sc_dev.dv_xname, 447 temp, "\020\4bad_irq\010flash/boot present"); 448 temp = inb(iobase + INT_NO_REG); 449 printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname, 450 temp, "\020\4BAD IRQ\010flash/boot present"); 451 #endif 452 453 454 outb(iobase + RCV_LOWER_LIMIT_REG, 0); 455 outb(iobase + RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8); 456 outb(iobase + XMT_LOWER_LIMIT_REG, sc->rx_size >> 8); 457 outb(iobase + XMT_UPPER_LIMIT_REG, sc->sram >> 8); 458 459 temp = inb(iobase + REG1); 460 #ifdef IYDEBUG 461 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 462 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 463 #endif 464 outb(iobase + REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ 465 466 #ifdef IYDEBUG 467 temp = inb(iobase + REG1); 468 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 469 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 470 #endif 471 472 outb(iobase, BANK_SEL(0)); 473 474 outb(iobase + INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); 475 outb(iobase + STATUS_REG, ALL_INTS); /* clear ints */ 476 477 outw(iobase + RCV_START_LOW, 0); 478 outw(iobase + RCV_STOP_LOW, sc->rx_size - 2); 479 sc->rx_start = 0; 480 481 outb(iobase, SEL_RESET_CMD); 482 DELAY(200); 483 484 outw(iobase + XMT_ADDR_REG, sc->rx_size); 485 486 sc->tx_start = sc->tx_end = sc->rx_size; 487 sc->tx_last = 0; 488 489 outb(iobase, RCV_ENABLE_CMD); 490 491 ifp->if_flags |= IFF_RUNNING; 492 ifp->if_flags &= ~IFF_OACTIVE; 493 } 494 495 void 496 iystart(ifp) 497 struct ifnet *ifp; 498 { 499 struct iy_softc *sc; 500 int iobase; 501 502 struct mbuf *m0, *m; 503 u_int len, pad, last, end; 504 u_int llen, residual; 505 int avail; 506 caddr_t data; 507 u_int16_t resval, stat; 508 509 #ifdef IYDEBUG 510 printf("iystart called\n"); 511 #endif 512 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 513 return; 514 515 sc = ifp->if_softc; 516 iobase = sc->sc_iobase; 517 518 while ((m0 = ifp->if_snd.ifq_head) != NULL) { 519 #ifdef IYDEBUG 520 printf("%s: trying to write another packet to the hardware\n", 521 sc->sc_dev.dv_xname); 522 #endif 523 524 /* We need to use m->m_pkthdr.len, so require the header */ 525 if ((m0->m_flags & M_PKTHDR) == 0) 526 panic("iystart: no header mbuf"); 527 528 len = m0->m_pkthdr.len; 529 pad = len & 1; 530 531 #ifdef IYDEBUG 532 printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len); 533 #endif 534 if (len < ETHER_MIN_LEN) { 535 pad = ETHER_MIN_LEN - len; 536 } 537 538 if (len + pad > ETHER_MAX_LEN) { 539 /* packet is obviously too large: toss it */ 540 ++ifp->if_oerrors; 541 IF_DEQUEUE(&ifp->if_snd, m0); 542 m_freem(m0); 543 continue; 544 } 545 546 #if NBPFILTER > 0 547 if (ifp->if_bpf) 548 bpf_mtap(ifp->if_bpf, m0); 549 #endif 550 551 avail = sc->tx_start - sc->tx_end; 552 if (avail <= 0) 553 avail += sc->tx_size; 554 555 #ifdef IYDEBUG 556 printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail); 557 #endif 558 /* 559 * we MUST RUN at splnet here --- 560 * XXX todo: or even turn off the boards ints ??? hm... 561 */ 562 563 /* See if there is room to put another packet in the buffer. */ 564 565 if ((len+pad+2*I595_XMT_HDRLEN) > avail) { 566 printf("%s: len = %d, avail = %d, setting OACTIVE\n", 567 sc->sc_dev.dv_xname, len, avail); 568 ifp->if_flags |= IFF_OACTIVE; 569 return; 570 } 571 572 /* we know it fits in the hardware now, so dequeue it */ 573 IF_DEQUEUE(&ifp->if_snd, m0); 574 575 last = sc->tx_end; 576 end = last + pad + len + I595_XMT_HDRLEN; 577 578 if (end >= sc->sram) { 579 if ((sc->sram - last) <= I595_XMT_HDRLEN) { 580 /* keep header in one piece */ 581 last = sc->rx_size; 582 end = last + pad + len + I595_XMT_HDRLEN; 583 } else 584 end -= sc->tx_size; 585 } 586 587 outw(iobase + HOST_ADDR_REG, last); 588 outw(iobase + MEM_PORT_REG, XMT_CMD); 589 outw(iobase + MEM_PORT_REG, 0); 590 outw(iobase + MEM_PORT_REG, 0); 591 outw(iobase + MEM_PORT_REG, len + pad); 592 593 residual = resval = 0; 594 595 while ((m = m0)!=0) { 596 data = mtod(m, caddr_t); 597 llen = m->m_len; 598 if (residual) { 599 #ifdef IYDEBUG 600 printf("%s: merging residual with next mbuf.\n", 601 sc->sc_dev.dv_xname); 602 #endif 603 resval |= *data << 8; 604 outw(iobase + MEM_PORT_REG, resval); 605 --llen; 606 ++data; 607 } 608 if (llen > 1) 609 outsw(iobase + MEM_PORT_REG, data, llen>>1); 610 residual = llen & 1; 611 if (residual) { 612 resval = *(data + llen - 1); 613 #ifdef IYDEBUG 614 printf("%s: got odd mbuf to send.\n", 615 sc->sc_dev.dv_xname); 616 #endif 617 } 618 619 MFREE(m, m0); 620 } 621 622 if (residual) 623 outw(iobase + MEM_PORT_REG, resval); 624 625 pad >>= 1; 626 while (pad-- > 0) 627 outw(iobase + MEM_PORT_REG, 0); 628 629 #ifdef IYDEBUG 630 printf("%s: new last = 0x%x, end = 0x%x.\n", 631 sc->sc_dev.dv_xname, last, end); 632 printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", 633 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 634 #endif 635 636 if (sc->tx_start != sc->tx_end) { 637 outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_COUNT); 638 stat = inw(iobase + MEM_PORT_REG); 639 640 outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); 641 outw(iobase + MEM_PORT_REG, last); 642 outw(iobase + MEM_PORT_REG, stat | CHAIN); 643 #ifdef IYDEBUG 644 printf("%s: setting 0x%x to 0x%x\n", 645 sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, 646 stat | CHAIN); 647 #endif 648 } 649 stat = inw(iobase + MEM_PORT_REG); /* dummy read */ 650 651 /* XXX todo: enable ints here if disabled */ 652 653 ++ifp->if_opackets; 654 655 if (sc->tx_start == sc->tx_end) { 656 outw(iobase + XMT_ADDR_REG, last); 657 outb(iobase, XMT_CMD); 658 sc->tx_start = last; 659 #ifdef IYDEBUG 660 printf("%s: writing 0x%x to XAR and giving XCMD\n", 661 sc->sc_dev.dv_xname, last); 662 #endif 663 } else { 664 outb(iobase, RESUME_XMT_CMD); 665 #ifdef IYDEBUG 666 printf("%s: giving RESUME_XCMD\n", 667 sc->sc_dev.dv_xname); 668 #endif 669 } 670 sc->tx_last = last; 671 sc->tx_end = end; 672 } 673 } 674 675 676 static __inline void 677 eepromwritebit(eio, what) 678 int eio, what; 679 { 680 outb(eio, what); 681 delay(1); 682 outb(eio, what|EESK); 683 delay(1); 684 outb(eio, what); 685 delay(1); 686 } 687 688 static __inline int 689 eepromreadbit(eio) 690 int eio; 691 { 692 int b; 693 694 outb(eio, EECS|EESK); 695 delay(1); 696 b = inb(eio); 697 outb(eio, EECS); 698 delay(1); 699 700 return ((b & EEDO) != 0); 701 } 702 703 static u_int16_t 704 eepromread(io, offset) 705 int io, offset; 706 { 707 volatile int i; 708 volatile int j; 709 volatile u_int16_t readval; 710 int eio = io+EEPROM_REG; 711 712 outb(io, BANK_SEL(2)); 713 delay(1); 714 outb(io, EECS); 715 delay(1); 716 717 eepromwritebit(eio, EECS|EEDI); 718 eepromwritebit(eio, EECS|EEDI); 719 eepromwritebit(eio, EECS); 720 721 for (j=5; j>=0; --j) { 722 if ((offset>>j) & 1) 723 eepromwritebit(eio, EECS|EEDI); 724 else 725 eepromwritebit(eio, EECS); 726 } 727 728 for (readval=0, i=0; i<16; ++i) { 729 readval<<=1; 730 readval |= eepromreadbit(eio); 731 } 732 733 outb(eio, 0|EESK); 734 delay(1); 735 outb(eio, 0); 736 737 outb(eio, BANK_SEL(0)); 738 739 return readval; 740 } 741 742 /* 743 * Device timeout/watchdog routine. Entered if the device neglects to generate 744 * an interrupt after a transmit has been started on it. 745 */ 746 void 747 iywatchdog(ifp) 748 struct ifnet *ifp; 749 { 750 struct iy_softc *sc = ifp->if_softc; 751 752 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 753 ++sc->sc_arpcom.ac_if.if_oerrors; 754 iyreset(sc); 755 } 756 757 /* 758 * What to do upon receipt of an interrupt. 759 */ 760 int 761 iyintr(arg) 762 void *arg; 763 { 764 struct iy_softc *sc = arg; 765 int iobase; 766 register u_short status; 767 768 iobase = sc->sc_iobase; 769 status = inb(iobase + STATUS_REG); 770 #ifdef IYDEBUG 771 if (status & ALL_INTS) { 772 printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, 773 "\020\1RX_STP\2RX\3TX\4EXEC"); 774 if (status & EXEC_INT) 775 printf(" event %b\n", inb(iobase), 776 "\020\6ABORT"); 777 else 778 printf("\n"); 779 } 780 #endif 781 if ((status & (RX_INT | TX_INT) == 0)) 782 return 0; 783 784 if (status & RX_INT) { 785 iy_intr_rx(sc); 786 outb(iobase + STATUS_REG, RX_INT); 787 } else if (status & TX_INT) { 788 iy_intr_tx(sc); 789 outb(iobase + STATUS_REG, TX_INT); 790 } 791 return 1; 792 } 793 794 void 795 iyget(sc, iobase, rxlen) 796 struct iy_softc *sc; 797 int iobase, rxlen; 798 { 799 struct mbuf *m, *top, **mp; 800 struct ether_header *eh; 801 struct ifnet *ifp; 802 int len; 803 804 ifp = &sc->sc_arpcom.ac_if; 805 806 m = sc->mb[sc->next_mb]; 807 sc->mb[sc->next_mb] = 0; 808 if (m == 0) { 809 MGETHDR(m, M_DONTWAIT, MT_DATA); 810 if (m == 0) 811 goto dropped; 812 } else { 813 if (sc->last_mb == sc->next_mb) 814 timeout(iymbuffill, sc, 1); 815 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 816 m->m_data = m->m_pktdat; 817 m->m_flags = M_PKTHDR; 818 } 819 m->m_pkthdr.rcvif = ifp; 820 m->m_pkthdr.len = rxlen; 821 len = MHLEN; 822 top = 0; 823 mp = ⊤ 824 825 while (rxlen > 0) { 826 if (top) { 827 m = sc->mb[sc->next_mb]; 828 sc->mb[sc->next_mb] = 0; 829 if (m == 0) { 830 MGET(m, M_DONTWAIT, MT_DATA); 831 if (m == 0) { 832 m_freem(top); 833 goto dropped; 834 } 835 } else { 836 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 837 } 838 len = MLEN; 839 } 840 if (rxlen >= MINCLSIZE) { 841 MCLGET(m, M_DONTWAIT); 842 if (m->m_flags & M_EXT) 843 len = MCLBYTES; 844 } 845 len = min(rxlen, len); 846 if (len > 1) { 847 len &= ~1; 848 insw(iobase + MEM_PORT_REG, mtod(m, caddr_t), len/2); 849 } else { 850 #ifdef IYDEBUG 851 printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); 852 #endif 853 *(mtod(m, caddr_t)) = inw(iobase + MEM_PORT_REG); 854 } 855 m->m_len = len; 856 rxlen -= len; 857 *mp = m; 858 mp = &m->m_next; 859 } 860 /* XXX receive the top here */ 861 ++ifp->if_ipackets; 862 863 eh = mtod(top, struct ether_header *); 864 865 #if NBPFILTER > 0 866 if (ifp->if_bpf) { 867 bpf_mtap(ifp->if_bpf, top); 868 if ((ifp->if_flags & IFF_PROMISC) && 869 (eh->ether_dhost[0] & 1) == 0 && 870 bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr, 871 sizeof(eh->ether_dhost)) != 0) { 872 m_freem(top); 873 return; 874 } 875 } 876 #endif 877 m_adj(top, sizeof(struct ether_header)); 878 ether_input(ifp, eh, top); 879 return; 880 881 dropped: 882 ++ifp->if_ierrors; 883 return; 884 } 885 void 886 iy_intr_rx(sc) 887 struct iy_softc *sc; 888 { 889 struct ifnet *ifp; 890 int iobase; 891 u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; 892 893 iobase = sc->sc_iobase; 894 ifp = &sc->sc_arpcom.ac_if; 895 896 rxadrs = sc->rx_start; 897 outw(iobase + HOST_ADDR_REG, rxadrs); 898 rxevnt = inw(iobase + MEM_PORT_REG); 899 rxnext = 0; 900 901 while (rxevnt == RCV_DONE) { 902 rxstatus = inw(iobase + MEM_PORT_REG); 903 rxnext = inw(iobase + MEM_PORT_REG); 904 rxlen = inw(iobase + MEM_PORT_REG); 905 #ifdef IYDEBUG 906 printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", 907 sc->sc_dev.dv_xname, rxadrs, rxstatus, 908 "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" 909 "\014CRCERR\015LENERR\016RCVOK\020TYP", 910 rxnext, rxlen); 911 #endif 912 iyget(sc, iobase, rxlen); 913 914 /* move stop address */ 915 outw(iobase + RCV_STOP_LOW, 916 rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); 917 918 outw(iobase + HOST_ADDR_REG, rxnext); 919 rxadrs = rxnext; 920 rxevnt = inw(iobase + MEM_PORT_REG); 921 } 922 sc->rx_start = rxnext; 923 } 924 925 void 926 iy_intr_tx(sc) 927 struct iy_softc *sc; 928 { 929 int iobase; 930 struct ifnet *ifp; 931 u_int txstatus, txstat2, txlen, txnext; 932 933 ifp = &sc->sc_arpcom.ac_if; 934 iobase = sc->sc_iobase; 935 936 while (sc->tx_start != sc->tx_end) { 937 outw(iobase + HOST_ADDR_REG, sc->tx_start); 938 txstatus = inw(iobase + MEM_PORT_REG); 939 if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) 940 break; 941 942 txstat2 = inw(iobase + MEM_PORT_REG); 943 txnext = inw(iobase + MEM_PORT_REG); 944 txlen = inw(iobase + MEM_PORT_REG); 945 #ifdef IYDEBUG 946 printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", 947 txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" 948 "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", 949 txnext, txlen); 950 #endif 951 if (txlen & CHAIN) 952 sc->tx_start = txnext; 953 else 954 sc->tx_start = sc->tx_end; 955 ifp->if_flags &= ~IFF_OACTIVE; 956 957 if ((txstat2 & 0x2000) == 0) 958 ++ifp->if_oerrors; 959 if (txstat2 & 0x000f) 960 ifp->if_oerrors += txstat2 & 0x000f; 961 } 962 ifp->if_flags &= ~IFF_OACTIVE; 963 } 964 965 #if 0 966 /* 967 * Compare two Ether/802 addresses for equality, inlined and unrolled for 968 * speed. I'd love to have an inline assembler version of this... 969 */ 970 static inline int 971 ether_equal(one, two) 972 u_char *one, *two; 973 { 974 975 if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || 976 one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) 977 return 0; 978 return 1; 979 } 980 981 /* 982 * Check for a valid address. to_bpf is filled in with one of the following: 983 * 0 -> BPF doesn't get this packet 984 * 1 -> BPF does get this packet 985 * 2 -> BPF does get this packet, but we don't 986 * Return value is true if the packet is for us, and false otherwise. 987 * 988 * This routine is a mess, but it's also critical that it be as fast 989 * as possible. It could be made cleaner if we can assume that the 990 * only client which will fiddle with IFF_PROMISC is BPF. This is 991 * probably a good assumption, but we do not make it here. (Yet.) 992 */ 993 static inline int 994 check_eh(sc, eh, to_bpf) 995 struct iy_softc *sc; 996 struct ether_header *eh; 997 int *to_bpf; 998 { 999 int i; 1000 1001 switch (sc->promisc) { 1002 case IFF_ALLMULTI: 1003 /* 1004 * Receiving all multicasts, but no unicasts except those 1005 * destined for us. 1006 */ 1007 #if NBPFILTER > 0 1008 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ 1009 #endif 1010 if (eh->ether_dhost[0] & 1) 1011 return 1; 1012 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 1013 return 1; 1014 return 0; 1015 1016 case IFF_PROMISC: 1017 /* 1018 * Receiving all packets. These need to be passed on to BPF. 1019 */ 1020 #if NBPFILTER > 0 1021 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1022 #endif 1023 /* If for us, accept and hand up to BPF */ 1024 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 1025 return 1; 1026 1027 #if NBPFILTER > 0 1028 if (*to_bpf) 1029 *to_bpf = 2; /* we don't need to see it */ 1030 #endif 1031 1032 /* 1033 * Not a multicast, so BPF wants to see it but we don't. 1034 */ 1035 if (!(eh->ether_dhost[0] & 1)) 1036 return 1; 1037 1038 /* 1039 * If it's one of our multicast groups, accept it and pass it 1040 * up. 1041 */ 1042 for (i = 0; i < sc->mcast_count; i++) { 1043 if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { 1044 #if NBPFILTER > 0 1045 if (*to_bpf) 1046 *to_bpf = 1; 1047 #endif 1048 return 1; 1049 } 1050 } 1051 return 1; 1052 1053 case IFF_ALLMULTI | IFF_PROMISC: 1054 /* 1055 * Acting as a multicast router, and BPF running at the same 1056 * time. Whew! (Hope this is a fast machine...) 1057 */ 1058 #if NBPFILTER > 0 1059 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1060 #endif 1061 /* We want to see multicasts. */ 1062 if (eh->ether_dhost[0] & 1) 1063 return 1; 1064 1065 /* We want to see our own packets */ 1066 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 1067 return 1; 1068 1069 /* Anything else goes to BPF but nothing else. */ 1070 #if NBPFILTER > 0 1071 if (*to_bpf) 1072 *to_bpf = 2; 1073 #endif 1074 return 1; 1075 1076 case 0: 1077 /* 1078 * Only accept unicast packets destined for us, or multicasts 1079 * for groups that we belong to. For now, we assume that the 1080 * '586 will only return packets that we asked it for. This 1081 * isn't strictly true (it uses hashing for the multicast 1082 * filter), but it will do in this case, and we want to get out 1083 * of here as quickly as possible. 1084 */ 1085 #if NBPFILTER > 0 1086 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1087 #endif 1088 return 1; 1089 } 1090 1091 #ifdef DIAGNOSTIC 1092 panic("check_eh: impossible"); 1093 #endif 1094 } 1095 #endif 1096 1097 int 1098 iyioctl(ifp, cmd, data) 1099 register struct ifnet *ifp; 1100 u_long cmd; 1101 caddr_t data; 1102 { 1103 struct iy_softc *sc; 1104 struct ifaddr *ifa; 1105 struct ifreq *ifr; 1106 int s, error = 0; 1107 1108 sc = ifp->if_softc; 1109 ifa = (struct ifaddr *)data; 1110 ifr = (struct ifreq *)data; 1111 1112 #ifdef IYDEBUG 1113 printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", 1114 ifp, ifp->if_xname, cmd, data); 1115 #endif 1116 1117 s = splimp(); 1118 1119 switch (cmd) { 1120 1121 case SIOCSIFADDR: 1122 ifp->if_flags |= IFF_UP; 1123 1124 switch (ifa->ifa_addr->sa_family) { 1125 #ifdef INET 1126 case AF_INET: 1127 iyinit(sc); 1128 arp_ifinit(&sc->sc_arpcom, ifa); 1129 break; 1130 #endif 1131 #ifdef NS 1132 /* XXX - This code is probably wrong. */ 1133 case AF_NS: 1134 { 1135 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1136 1137 if (ns_nullhost(*ina)) 1138 ina->x_host = 1139 *(union ns_host *)(sc->sc_arpcom.ac_enaddr); 1140 else 1141 bcopy(ina->x_host.c_host, 1142 sc->sc_arpcom.ac_enaddr, 1143 sizeof(sc->sc_arpcom.ac_enaddr)); 1144 /* Set new address. */ 1145 iyinit(sc); 1146 break; 1147 } 1148 #endif /* NS */ 1149 default: 1150 iyinit(sc); 1151 break; 1152 } 1153 break; 1154 1155 case SIOCSIFFLAGS: 1156 sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 1157 if ((ifp->if_flags & IFF_UP) == 0 && 1158 (ifp->if_flags & IFF_RUNNING) != 0) { 1159 /* 1160 * If interface is marked down and it is running, then 1161 * stop it. 1162 */ 1163 iystop(sc); 1164 ifp->if_flags &= ~IFF_RUNNING; 1165 } else if ((ifp->if_flags & IFF_UP) != 0 && 1166 (ifp->if_flags & IFF_RUNNING) == 0) { 1167 /* 1168 * If interface is marked up and it is stopped, then 1169 * start it. 1170 */ 1171 iyinit(sc); 1172 } else { 1173 /* 1174 * Reset the interface to pick up changes in any other 1175 * flags that affect hardware registers. 1176 */ 1177 iystop(sc); 1178 iyinit(sc); 1179 } 1180 #ifdef IYDEBUGX 1181 if (ifp->if_flags & IFF_DEBUG) 1182 sc->sc_debug = IFY_ALL; 1183 else 1184 sc->sc_debug = 0; 1185 #endif 1186 break; 1187 1188 #if 0 /* XXX */ 1189 case SIOCADDMULTI: 1190 case SIOCDELMULTI: 1191 error = (cmd == SIOCADDMULTI) ? 1192 ether_addmulti(ifr, &sc->sc_arpcom): 1193 ether_delmulti(ifr, &sc->sc_arpcom); 1194 1195 if (error == ENETRESET) { 1196 /* 1197 * Multicast list has changed; set the hardware filter 1198 * accordingly. 1199 */ 1200 iy_mc_reset(sc); /* XXX */ 1201 error = 0; 1202 } 1203 break; 1204 #endif 1205 default: 1206 error = EINVAL; 1207 } 1208 splx(s); 1209 return error; 1210 } 1211 1212 #if 0 1213 static void 1214 iy_mc_reset(sc) 1215 struct iy_softc *sc; 1216 { 1217 struct ether_multi *enm; 1218 struct ether_multistep step; 1219 1220 /* 1221 * Step through the list of addresses. 1222 */ 1223 sc->mcast_count = 0; 1224 ETHER_FIRST_MULTI(step, &sc->sc_arpcom, enm); 1225 while (enm) { 1226 if (sc->mcast_count >= MAXMCAST || 1227 bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { 1228 sc->sc_arpcom.ac_if.if_flags |= IFF_ALLMULTI; 1229 iyioctl(&sc->sc_arpcom.ac_if, SIOCSIFFLAGS, (void *)0); 1230 goto setflag; 1231 } 1232 1233 bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); 1234 sc->mcast_count++; 1235 ETHER_NEXT_MULTI(step, enm); 1236 } 1237 setflag: 1238 sc->want_mcsetup = 1; 1239 } 1240 1241 #ifdef IYDEBUG 1242 void 1243 print_rbd(rbd) 1244 volatile struct ie_recv_buf_desc *rbd; 1245 { 1246 1247 printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" 1248 "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, 1249 rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, 1250 rbd->mbz); 1251 } 1252 #endif 1253 #endif 1254 1255 void 1256 iymbuffill(arg) 1257 void *arg; 1258 { 1259 struct iy_softc *sc = (struct iy_softc *)arg; 1260 int s, i; 1261 1262 s = splimp(); 1263 i = sc->last_mb; 1264 do { 1265 if (sc->mb[i] == NULL) 1266 MGET(sc->mb[i], M_DONTWAIT, MT_DATA); 1267 if (sc->mb[i] == NULL) 1268 break; 1269 i = (i + 1) % MAX_MBS; 1270 } while (i != sc->next_mb); 1271 sc->last_mb = i; 1272 /* If the queue was not filled, try again. */ 1273 if (sc->last_mb != sc->next_mb) 1274 timeout(iymbuffill, sc, 1); 1275 splx(s); 1276 } 1277 1278 1279 void 1280 iymbufempty(arg) 1281 void *arg; 1282 { 1283 struct iy_softc *sc = (struct iy_softc *)arg; 1284 int s, i; 1285 1286 s = splimp(); 1287 for (i = 0; i<MAX_MBS; i++) { 1288 if (sc->mb[i]) { 1289 m_freem(sc->mb[i]); 1290 sc->mb[i] = NULL; 1291 } 1292 } 1293 sc->last_mb = sc->next_mb = 0; 1294 untimeout(iymbuffill, sc); 1295 splx(s); 1296 } 1297 1298 void 1299 iyprobemem(sc) 1300 struct iy_softc *sc; 1301 { 1302 int iobase; 1303 int testing; 1304 1305 iobase = sc->sc_iobase; 1306 1307 outw(iobase + HOST_ADDR_REG, 4096-2); 1308 outw(iobase + MEM_PORT_REG, 0); 1309 1310 for (testing=65536; testing >= 4096; testing >>= 1) { 1311 outw(iobase + HOST_ADDR_REG, testing-2); 1312 outw(iobase + MEM_PORT_REG, 0xdead); 1313 outw(iobase + HOST_ADDR_REG, testing-2); 1314 if (inw(iobase + MEM_PORT_REG) != 0xdead) { 1315 #ifdef IYMEMDEBUG 1316 printf("%s: Didn't keep 0xdead at 0x%x\n", 1317 sc->sc_dev.dv_xname, testing-2); 1318 #endif 1319 continue; 1320 } 1321 1322 outw(iobase + HOST_ADDR_REG, testing-2); 1323 outw(iobase + MEM_PORT_REG, 0xbeef); 1324 outw(iobase + HOST_ADDR_REG, testing-2); 1325 if (inw(iobase + MEM_PORT_REG) != 0xbeef) { 1326 #ifdef IYMEMDEBUG 1327 printf("%s: Didn't keep 0xbeef at 0x%x\n", 1328 sc->sc_dev.dv_xname, testing-2); 1329 #endif 1330 continue; 1331 } 1332 1333 outw(iobase + HOST_ADDR_REG, 0); 1334 outw(iobase + MEM_PORT_REG, 0); 1335 outw(iobase + HOST_ADDR_REG, testing >> 1); 1336 outw(iobase + MEM_PORT_REG, testing >> 1); 1337 outw(iobase + HOST_ADDR_REG, 0); 1338 if (inw(iobase + MEM_PORT_REG) == (testing >> 1)) { 1339 #ifdef IYMEMDEBUG 1340 printf("%s: 0x%x alias of 0x0\n", 1341 sc->sc_dev.dv_xname, testing >> 1); 1342 #endif 1343 continue; 1344 } 1345 1346 break; 1347 } 1348 1349 sc->sram = testing; 1350 1351 switch(testing) { 1352 case 65536: 1353 /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ 1354 sc->rx_size = 44*1024; 1355 break; 1356 1357 case 32768: 1358 /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ 1359 sc->rx_size = 22*1024; 1360 break; 1361 1362 case 16384: 1363 /* 1 NFS packet + overhead RX, 4 big packets TX */ 1364 sc->rx_size = 10*1024; 1365 break; 1366 default: 1367 sc->rx_size = testing/2; 1368 break; 1369 } 1370 sc->tx_size = testing - sc->rx_size; 1371 } 1372
Indexes created Sat Sep 27 14:09:57 GMT 2025