if_iy.c revision 1.2
1 /* $NetBSD: if_iy.c,v 1.2 1996/05/07 01:55:28 thorpej 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/pio.h> 77 78 #include <dev/isa/isareg.h> 79 #include <dev/isa/isavar.h> 80 #include <dev/ic/i82595reg.h> 81 82 #define ETHER_MIN_LEN 64 83 #define ETHER_MAX_LEN 1518 84 85 /* 86 * Ethernet status, per interface. 87 */ 88 struct iy_softc { 89 struct device sc_dev; 90 void *sc_ih; 91 92 int sc_iobase; 93 struct arpcom sc_arpcom; 94 95 #define MAX_MBS 8 96 struct mbuf *mb[MAX_MBS]; 97 int next_mb, last_mb; 98 99 int mappedirq; 100 101 int hard_vers; 102 103 int promisc; 104 105 int sram, tx_size, rx_size; 106 107 int tx_start, tx_end, tx_last; 108 int rx_start; 109 110 #ifdef IYDEBUG 111 int sc_debug; 112 #endif 113 }; 114 115 void iywatchdog __P((struct ifnet *)); 116 int iyioctl __P((struct ifnet *, u_long, caddr_t)); 117 int iyintr __P((void *)); 118 void iyinit __P((struct iy_softc *)); 119 void iystop __P((struct iy_softc *)); 120 void iystart __P((struct ifnet *)); 121 122 void iy_intr_rx __P((struct iy_softc *)); 123 void iy_intr_tx __P((struct iy_softc *)); 124 void eepro_reset_595 __P((struct iy_softc *)); 125 int eepro_probe __P((struct iy_softc *, struct isa_attach_args *)); 126 void eepro_eeprom_outbits __P((struct iy_softc *, int, int)); 127 void eepro_eeprom_clock __P((struct iy_softc *, int)); 128 u_short eepro_read_eeprom __P((struct iy_softc *, int)); 129 int eepro_eeprom_inbits __P((struct iy_softc *)); 130 131 void iyreset __P((struct iy_softc *)); 132 void iy_readframe __P((struct iy_softc *, int)); 133 void iy_drop_packet_buffer __P((struct iy_softc *)); 134 void iy_find_mem_size __P((struct iy_softc *)); 135 void iyrint __P((struct iy_softc *)); 136 void iytint __P((struct iy_softc *)); 137 void iyxmit __P((struct iy_softc *)); 138 void iyget __P((struct iy_softc *, int, int)); 139 void iymbuffill __P((void *)); 140 void iymbufempty __P((void *)); 141 void iyprobemem __P((struct iy_softc *)); 142 143 /* 144 * void iymeminit __P((void *, struct iy_softc *)); 145 * static int iy_mc_setup __P((struct iy_softc *, void *)); 146 * static void iy_mc_reset __P((struct iy_softc *)); 147 */ 148 #ifdef IYDEBUGX 149 void print_rbd __P((volatile struct iy_recv_buf_desc *)); 150 151 int in_ifrint = 0; 152 int in_iftint = 0; 153 #endif 154 155 int iyprobe __P((struct device *, void *, void *)); 156 void iyattach __P((struct device *, struct device *, void *)); 157 158 static u_int16_t eepromread __P((int, int)); 159 160 struct cfattach iy_ca = { 161 sizeof(struct iy_softc), iyprobe, iyattach 162 }; 163 164 struct cfdriver iy_cd = { 165 NULL, "iy", DV_IFNET 166 }; 167 168 static u_int8_t eepro_irqmap[] = EEPP_INTMAP; 169 static u_int8_t eepro_revirqmap[] = EEPP_RINTMAP; 170 171 int 172 iyprobe(parent, match, aux) 173 struct device *parent; 174 void *match, *aux; 175 { 176 struct iy_softc *sc = match; 177 struct isa_attach_args *ia = aux; 178 179 u_int16_t eaddr[8]; 180 int iobase; 181 int i; 182 183 u_int16_t checksum = 0; 184 u_int16_t eepromtmp; 185 u_int8_t c, d; 186 187 188 iobase = ia->ia_iobase; 189 190 if (iobase == -1) 191 return 0; 192 193 /* try to find the round robin sig: */ 194 195 /* check here for addresses already given to other devices */ 196 197 c = inb(iobase + ID_REG); 198 if (c & ID_REG_MASK != ID_REG_SIG) 199 return 0; 200 201 d = inb(iobase + ID_REG); 202 if (d & ID_REG_MASK != ID_REG_SIG) 203 return 0; 204 205 if (((d-c) & R_ROBIN_BITS) != 0x40) 206 return 0; 207 208 d = inb(iobase + ID_REG); 209 if (d & ID_REG_MASK != ID_REG_SIG) 210 return 0; 211 212 if (((d-c) & R_ROBIN_BITS) != 0x80) 213 return 0; 214 215 d = inb(iobase + ID_REG); 216 if (d & ID_REG_MASK != ID_REG_SIG) 217 return 0; 218 219 if (((d-c) & R_ROBIN_BITS) != 0xC0) 220 return 0; 221 222 d = inb(iobase + ID_REG); 223 if (d & ID_REG_MASK != ID_REG_SIG) 224 return 0; 225 226 if (((d-c) & R_ROBIN_BITS) != 0x00) 227 return 0; 228 229 #ifdef IYDEBUG 230 printf("eepro_probe verified working ID reg.\n"); 231 #endif 232 233 for (i=0; i<64; ++i) { 234 eepromtmp = eepromread(iobase, i); 235 checksum += eepromtmp; 236 if (i<(sizeof(eaddr)/sizeof(*eaddr))) 237 eaddr[i] = eepromtmp; 238 } 239 if (checksum != EEPP_CHKSUM) 240 printf("wrong EEPROM checksum 0x%x should be 0x%x\n", 241 checksum, EEPP_CHKSUM); 242 243 244 if ((eaddr[EEPPEther0] != eepromread(iobase, EEPPEther0a)) && 245 (eaddr[EEPPEther1] != eepromread(iobase, EEPPEther1a)) && 246 (eaddr[EEPPEther2] != eepromread(iobase, EEPPEther2a))) 247 printf("EEPROM Ethernet address differs from copy\n"); 248 249 sc->sc_arpcom.ac_enaddr[1] = eaddr[EEPPEther0] & 0xFF; 250 sc->sc_arpcom.ac_enaddr[0] = eaddr[EEPPEther0] >> 8; 251 sc->sc_arpcom.ac_enaddr[3] = eaddr[EEPPEther1] & 0xFF; 252 sc->sc_arpcom.ac_enaddr[2] = eaddr[EEPPEther1] >> 8; 253 sc->sc_arpcom.ac_enaddr[5] = eaddr[EEPPEther2] & 0xFF; 254 sc->sc_arpcom.ac_enaddr[4] = eaddr[EEPPEther2] >> 8; 255 256 if (ia->ia_irq == IRQUNK) 257 ia->ia_irq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; 258 259 if (ia->ia_irq >= sizeof(eepro_revirqmap)) 260 return 0; 261 262 if ((sc->mappedirq = eepro_revirqmap[ia->ia_irq]) == -1) 263 return 0; 264 265 sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev; 266 267 /* now lets reset the chip */ 268 269 outb(iobase + COMMAND_REG, RESET_CMD); 270 delay(200); 271 272 ia->ia_iobase = iobase; 273 ia->ia_iosize = 16; 274 return 1; /* found */ 275 } 276 277 void 278 iyattach(parent, self, aux) 279 struct device *parent, *self; 280 void *aux; 281 { 282 struct iy_softc *sc = (void *)self; 283 struct isa_attach_args *ia = aux; 284 struct ifnet *ifp = &sc->sc_arpcom.ac_if; 285 286 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 287 ifp->if_softc = sc; 288 ifp->if_start = iystart; 289 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 290 /* XXX todo: | IFF_MULTICAST */ 291 sc->sc_iobase = ia->ia_iobase; 292 293 iyprobemem(sc); 294 295 ifp->if_ioctl = iyioctl; 296 ifp->if_watchdog = iywatchdog; 297 298 /* Attach the interface. */ 299 if_attach(ifp); 300 ether_ifattach(ifp); 301 printf(": address %s, chip rev. %d, %d kB SRAM\n", 302 ether_sprintf(sc->sc_arpcom.ac_enaddr), 303 sc->hard_vers, sc->sram/1024); 304 #if NBPFILTER > 0 305 bpfattach(&sc->sc_arpcom.ac_if.if_bpf, ifp, DLT_EN10MB, 306 sizeof(struct ether_header)); 307 #endif 308 309 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 310 IPL_NET, iyintr, sc); 311 } 312 313 void 314 iystop(sc) 315 struct iy_softc *sc; 316 { 317 int iobase; 318 #ifdef IYDEBUG 319 u_int p, v; 320 #endif 321 322 iobase = sc->sc_iobase; 323 324 outb(iobase + COMMAND_REG, RCV_DISABLE_CMD); 325 326 outb(iobase + INT_MASK_REG, ALL_INTS); 327 outb(iobase + STATUS_REG, ALL_INTS); 328 329 outb(iobase + COMMAND_REG, RESET_CMD); 330 delay(200); 331 #ifdef IYDEBUG 332 printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n", 333 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 334 p = sc->tx_last; 335 if (!p) 336 p = sc->tx_start; 337 do { 338 outw(iobase + HOST_ADDR_REG, p); 339 v = inw(iobase + MEM_PORT_REG); 340 printf("0x%04x: %b ", p, v, "\020\006Ab\010Dn"); 341 v = inw(iobase + MEM_PORT_REG); 342 printf("0x%b", v, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL"); 343 p = inw(iobase + MEM_PORT_REG); 344 printf(" 0x%04x", p); 345 v = inw(iobase + MEM_PORT_REG); 346 printf(" 0x%b\n", v, "\020\020Ch"); 347 348 } while (v & 0x8000); 349 #endif 350 sc->tx_start = sc->tx_end = sc->rx_size; 351 sc->tx_last = 0; 352 sc->sc_arpcom.ac_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 353 354 iymbufempty((void *)sc); 355 } 356 357 void 358 iyreset(sc) 359 struct iy_softc *sc; 360 { 361 int s; 362 s = splimp(); 363 iystop(sc); 364 iyinit(sc); 365 splx(s); 366 } 367 368 void 369 iyinit(sc) 370 struct iy_softc *sc; 371 { 372 int i; 373 unsigned temp; 374 struct ifnet *ifp; 375 int iobase; 376 377 ifp = &sc->sc_arpcom.ac_if; 378 #ifdef IYDEBUG 379 printf("ifp is %p\n", ifp); 380 #endif 381 iobase = sc->sc_iobase; 382 383 outb(iobase, BANK_SEL(2)); 384 385 temp = inb(iobase + EEPROM_REG); 386 if (temp & 0x10) 387 outb(iobase + EEPROM_REG, temp & ~0x10); 388 389 for (i=0; i<6; ++i) { 390 outb(iobase + I_ADD(i), sc->sc_arpcom.ac_enaddr[i]); 391 } 392 393 temp = inb(iobase + REG1); 394 outb(iobase + REG1, temp | XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | 395 RCV_DISCARD_BAD); 396 397 temp = inb(iobase + RECV_MODES_REG); 398 outb(iobase + RECV_MODES_REG, temp | MATCH_BRDCST); 399 #ifdef IYDEBUG 400 printf("%s: RECV_MODES were %b set to %b\n", 401 sc->sc_dev.dv_xname, 402 temp, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA", 403 temp|MATCH_BRDCST, 404 "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA"); 405 #endif 406 407 408 DELAY(500000); /* for the hardware to test for the connector */ 409 410 temp = inb(iobase + MEDIA_SELECT); 411 #ifdef IYDEBUG 412 printf("%s: media select was 0x%b", sc->sc_dev.dv_xname, 413 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 414 #endif 415 temp = (temp & TEST_MODE_MASK) /* | BNC_BIT XXX*/; 416 outb(iobase + MEDIA_SELECT, temp); 417 #ifdef IYDEBUG 418 printf("changed to 0x%b\n", 419 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 420 #endif 421 422 outb(iobase, BANK_SEL(1)); 423 424 temp = inb(iobase + INT_NO_REG); 425 outb(iobase + INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 426 427 #ifdef IYDEBUG 428 printf("%s: int no was %b\n", sc->sc_dev.dv_xname, 429 temp, "\020\4bad_irq\010flash/boot present"); 430 temp = inb(iobase + INT_NO_REG); 431 printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname, 432 temp, "\020\4BAD IRQ\010flash/boot present"); 433 #endif 434 435 436 outb(iobase + RCV_LOWER_LIMIT_REG, 0); 437 outb(iobase + RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8); 438 outb(iobase + XMT_LOWER_LIMIT_REG, sc->rx_size >> 8); 439 outb(iobase + XMT_UPPER_LIMIT_REG, sc->sram >> 8); 440 441 temp = inb(iobase + REG1); 442 #ifdef IYDEBUG 443 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 444 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 445 #endif 446 outb(iobase + REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ 447 448 #ifdef IYDEBUG 449 temp = inb(iobase + REG1); 450 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 451 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 452 #endif 453 454 outb(iobase, BANK_SEL(0)); 455 456 outb(iobase + INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); 457 outb(iobase + STATUS_REG, ALL_INTS); /* clear ints */ 458 459 outw(iobase + RCV_START_LOW, 0); 460 outw(iobase + RCV_STOP_LOW, sc->rx_size - 2); 461 sc->rx_start = 0; 462 463 outb(iobase, SEL_RESET_CMD); 464 DELAY(200); 465 466 outw(iobase + XMT_ADDR_REG, sc->rx_size); 467 468 sc->tx_start = sc->tx_end = sc->rx_size; 469 sc->tx_last = 0; 470 471 outb(iobase, RCV_ENABLE_CMD); 472 473 ifp->if_flags |= IFF_RUNNING; 474 ifp->if_flags &= ~IFF_OACTIVE; 475 } 476 477 void 478 iystart(ifp) 479 struct ifnet *ifp; 480 { 481 struct iy_softc *sc; 482 int iobase; 483 484 struct mbuf *m0, *m; 485 u_int len, pad, last, end; 486 u_int llen, residual; 487 int avail; 488 caddr_t data; 489 u_int16_t resval, stat; 490 491 #ifdef IYDEBUG 492 printf("iystart called\n"); 493 #endif 494 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 495 return; 496 497 sc = ifp->if_softc; 498 iobase = sc->sc_iobase; 499 500 while ((m0 = ifp->if_snd.ifq_head) != NULL) { 501 #ifdef IYDEBUG 502 printf("%s: trying to write another packet to the hardware\n", 503 sc->sc_dev.dv_xname); 504 #endif 505 506 /* We need to use m->m_pkthdr.len, so require the header */ 507 if ((m0->m_flags & M_PKTHDR) == 0) 508 panic("iystart: no header mbuf"); 509 510 len = m0->m_pkthdr.len; 511 pad = len & 1; 512 513 #ifdef IYDEBUG 514 printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len); 515 #endif 516 if (len < ETHER_MIN_LEN) { 517 pad = ETHER_MIN_LEN - len; 518 } 519 520 if (len + pad > ETHER_MAX_LEN) { 521 /* packet is obviously too large: toss it */ 522 ++ifp->if_oerrors; 523 IF_DEQUEUE(&ifp->if_snd, m0); 524 m_freem(m0); 525 continue; 526 } 527 528 #if NBPFILTER > 0 529 if (ifp->if_bpf) 530 bpf_mtap(ifp->if_bpf, m0); 531 #endif 532 533 avail = sc->tx_start - sc->tx_end; 534 if (avail <= 0) 535 avail += sc->tx_size; 536 537 #ifdef IYDEBUG 538 printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail); 539 #endif 540 /* 541 * we MUST RUN at splnet here --- 542 * XXX todo: or even turn off the boards ints ??? hm... 543 */ 544 545 /* See if there is room to put another packet in the buffer. */ 546 547 if ((len+pad+2*I595_XMT_HDRLEN) > avail) { 548 printf("%s: len = %d, avail = %d, setting OACTIVE\n", 549 sc->sc_dev.dv_xname, len, avail); 550 ifp->if_flags |= IFF_OACTIVE; 551 return; 552 } 553 554 /* we know it fits in the hardware now, so dequeue it */ 555 IF_DEQUEUE(&ifp->if_snd, m0); 556 557 last = sc->tx_end; 558 end = last + pad + len + I595_XMT_HDRLEN; 559 560 if (end >= sc->sram) { 561 if ((sc->sram - last) <= I595_XMT_HDRLEN) { 562 /* keep header in one piece */ 563 last = sc->rx_size; 564 end = last + pad + len + I595_XMT_HDRLEN; 565 } else 566 end -= sc->tx_size; 567 } 568 569 outw(iobase + HOST_ADDR_REG, last); 570 outw(iobase + MEM_PORT_REG, XMT_CMD); 571 outw(iobase + MEM_PORT_REG, 0); 572 outw(iobase + MEM_PORT_REG, 0); 573 outw(iobase + MEM_PORT_REG, len + pad); 574 575 residual = resval = 0; 576 577 while ((m = m0)!=0) { 578 data = mtod(m, caddr_t); 579 llen = m->m_len; 580 if (residual) { 581 #ifdef IYDEBUG 582 printf("%s: merging residual with next mbuf.\n", 583 sc->sc_dev.dv_xname); 584 #endif 585 resval |= *data << 8; 586 outw(iobase + MEM_PORT_REG, resval); 587 --llen; 588 ++data; 589 } 590 if (llen > 1) 591 outsw(iobase + MEM_PORT_REG, data, llen>>1); 592 residual = llen & 1; 593 if (residual) { 594 resval = *(data + llen - 1); 595 #ifdef IYDEBUG 596 printf("%s: got odd mbuf to send.\n", 597 sc->sc_dev.dv_xname); 598 #endif 599 } 600 601 MFREE(m, m0); 602 } 603 604 if (residual) 605 outw(iobase + MEM_PORT_REG, resval); 606 607 pad >>= 1; 608 while (pad-- > 0) 609 outw(iobase + MEM_PORT_REG, 0); 610 611 #ifdef IYDEBUG 612 printf("%s: new last = 0x%x, end = 0x%x.\n", 613 sc->sc_dev.dv_xname, last, end); 614 printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", 615 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 616 #endif 617 618 if (sc->tx_start != sc->tx_end) { 619 outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_COUNT); 620 stat = inw(iobase + MEM_PORT_REG); 621 622 outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); 623 outw(iobase + MEM_PORT_REG, last); 624 outw(iobase + MEM_PORT_REG, stat | CHAIN); 625 #ifdef IYDEBUG 626 printf("%s: setting 0x%x to 0x%x\n", 627 sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, 628 stat | CHAIN); 629 #endif 630 } 631 stat = inw(iobase + MEM_PORT_REG); /* dummy read */ 632 633 /* XXX todo: enable ints here if disabled */ 634 635 ++ifp->if_opackets; 636 637 if (sc->tx_start == sc->tx_end) { 638 outw(iobase + XMT_ADDR_REG, last); 639 outb(iobase, XMT_CMD); 640 sc->tx_start = last; 641 #ifdef IYDEBUG 642 printf("%s: writing 0x%x to XAR and giving XCMD\n", 643 sc->sc_dev.dv_xname, last); 644 #endif 645 } else { 646 outb(iobase, RESUME_XMT_CMD); 647 #ifdef IYDEBUG 648 printf("%s: giving RESUME_XCMD\n", 649 sc->sc_dev.dv_xname); 650 #endif 651 } 652 sc->tx_last = last; 653 sc->tx_end = end; 654 } 655 } 656 657 658 static __inline void 659 eepromwritebit(eio, what) 660 int eio, what; 661 { 662 outb(eio, what); 663 delay(1); 664 outb(eio, what|EESK); 665 delay(1); 666 outb(eio, what); 667 delay(1); 668 } 669 670 static __inline int 671 eepromreadbit(eio) 672 int eio; 673 { 674 int b; 675 676 outb(eio, EECS|EESK); 677 delay(1); 678 b = inb(eio); 679 outb(eio, EECS); 680 delay(1); 681 682 return ((b & EEDO) != 0); 683 } 684 685 static u_int16_t 686 eepromread(io, offset) 687 int io, offset; 688 { 689 volatile int i; 690 volatile int j; 691 volatile u_int16_t readval; 692 int eio = io+EEPROM_REG; 693 694 outb(io, BANK_SEL(2)); 695 delay(1); 696 outb(io, EECS); 697 delay(1); 698 699 eepromwritebit(eio, EECS|EEDI); 700 eepromwritebit(eio, EECS|EEDI); 701 eepromwritebit(eio, EECS); 702 703 for (j=5; j>=0; --j) { 704 if ((offset>>j) & 1) 705 eepromwritebit(eio, EECS|EEDI); 706 else 707 eepromwritebit(eio, EECS); 708 } 709 710 for (readval=0, i=0; i<16; ++i) { 711 readval<<=1; 712 readval |= eepromreadbit(eio); 713 } 714 715 outb(eio, 0|EESK); 716 delay(1); 717 outb(eio, 0); 718 719 outb(eio, BANK_SEL(0)); 720 721 return readval; 722 } 723 724 /* 725 * Device timeout/watchdog routine. Entered if the device neglects to generate 726 * an interrupt after a transmit has been started on it. 727 */ 728 void 729 iywatchdog(ifp) 730 struct ifnet *ifp 731 { 732 struct iy_softc *sc = ifp->if_softc; 733 734 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 735 ++sc->sc_arpcom.ac_if.if_oerrors; 736 iyreset(sc); 737 } 738 739 /* 740 * What to do upon receipt of an interrupt. 741 */ 742 int 743 iyintr(arg) 744 void *arg; 745 { 746 struct iy_softc *sc = arg; 747 int iobase; 748 register u_short status; 749 750 iobase = sc->sc_iobase; 751 status = inb(iobase + STATUS_REG); 752 #ifdef IYDEBUG 753 if (status & ALL_INTS) { 754 printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, 755 "\020\1RX_STP\2RX\3TX\4EXEC"); 756 if (status & EXEC_INT) 757 printf(" event %b\n", inb(iobase), 758 "\020\6ABORT"); 759 else 760 printf("\n"); 761 } 762 #endif 763 if ((status & (RX_INT | TX_INT) == 0)) 764 return 0; 765 766 if (status & RX_INT) { 767 iy_intr_rx(sc); 768 outb(iobase + STATUS_REG, RX_INT); 769 } else if (status & TX_INT) { 770 iy_intr_tx(sc); 771 outb(iobase + STATUS_REG, TX_INT); 772 } 773 return 1; 774 } 775 776 void 777 iyget(sc, iobase, rxlen) 778 struct iy_softc *sc; 779 int iobase, rxlen; 780 { 781 struct mbuf *m, *top, **mp; 782 struct ether_header *eh; 783 struct ifnet *ifp; 784 int len; 785 786 ifp = &sc->sc_arpcom.ac_if; 787 788 m = sc->mb[sc->next_mb]; 789 sc->mb[sc->next_mb] = 0; 790 if (m == 0) { 791 MGETHDR(m, M_DONTWAIT, MT_DATA); 792 if (m == 0) 793 goto dropped; 794 } else { 795 if (sc->last_mb == sc->next_mb) 796 timeout(iymbuffill, sc, 1); 797 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 798 m->m_data = m->m_pktdat; 799 m->m_flags = M_PKTHDR; 800 } 801 m->m_pkthdr.rcvif = ifp; 802 m->m_pkthdr.len = rxlen; 803 len = MHLEN; 804 top = 0; 805 mp = ⊤ 806 807 while (rxlen > 0) { 808 if (top) { 809 m = sc->mb[sc->next_mb]; 810 sc->mb[sc->next_mb] = 0; 811 if (m == 0) { 812 MGET(m, M_DONTWAIT, MT_DATA); 813 if (m == 0) { 814 m_freem(top); 815 goto dropped; 816 } 817 } else { 818 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 819 } 820 len = MLEN; 821 } 822 if (rxlen >= MINCLSIZE) { 823 MCLGET(m, M_DONTWAIT); 824 if (m->m_flags & M_EXT) 825 len = MCLBYTES; 826 } 827 len = min(rxlen, len); 828 if (len > 1) { 829 len &= ~1; 830 insw(iobase + MEM_PORT_REG, mtod(m, caddr_t), len/2); 831 } else { 832 #ifdef IYDEBUG 833 printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); 834 #endif 835 *(mtod(m, caddr_t)) = inw(iobase + MEM_PORT_REG); 836 } 837 m->m_len = len; 838 rxlen -= len; 839 *mp = m; 840 mp = &m->m_next; 841 } 842 /* XXX receive the top here */ 843 ++ifp->if_ipackets; 844 845 eh = mtod(top, struct ether_header *); 846 847 #if NBPFILTER > 0 848 if (ifp->if_bpf) { 849 bpf_mtap(ifp->if_bpf, top); 850 if ((ifp->if_flags & IFF_PROMISC) && 851 (eh->ether_dhost[0] & 1) == 0 && 852 bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr, 853 sizeof(eh->ether_dhost)) != 0) { 854 m_freem(top); 855 return; 856 } 857 } 858 #endif 859 m_adj(top, sizeof(struct ether_header)); 860 ether_input(ifp, eh, top); 861 return; 862 863 dropped: 864 ++ifp->if_ierrors; 865 return; 866 } 867 void 868 iy_intr_rx(sc) 869 struct iy_softc *sc; 870 { 871 struct ifnet *ifp; 872 int iobase; 873 u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; 874 875 iobase = sc->sc_iobase; 876 ifp = &sc->sc_arpcom.ac_if; 877 878 rxadrs = sc->rx_start; 879 outw(iobase + HOST_ADDR_REG, rxadrs); 880 rxevnt = inw(iobase + MEM_PORT_REG); 881 rxnext = 0; 882 883 while (rxevnt == RCV_DONE) { 884 rxstatus = inw(iobase + MEM_PORT_REG); 885 rxnext = inw(iobase + MEM_PORT_REG); 886 rxlen = inw(iobase + MEM_PORT_REG); 887 #ifdef IYDEBUG 888 printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", 889 sc->sc_dev.dv_xname, rxadrs, rxstatus, 890 "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" 891 "\014CRCERR\015LENERR\016RCVOK\020TYP", 892 rxnext, rxlen); 893 #endif 894 iyget(sc, iobase, rxlen); 895 896 /* move stop address */ 897 outw(iobase + RCV_STOP_LOW, 898 rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); 899 900 outw(iobase + HOST_ADDR_REG, rxnext); 901 rxadrs = rxnext; 902 rxevnt = inw(iobase + MEM_PORT_REG); 903 } 904 sc->rx_start = rxnext; 905 } 906 907 void 908 iy_intr_tx(sc) 909 struct iy_softc *sc; 910 { 911 int iobase; 912 struct ifnet *ifp; 913 u_int txstatus, txstat2, txlen, txnext; 914 915 ifp = &sc->sc_arpcom.ac_if; 916 iobase = sc->sc_iobase; 917 918 while (sc->tx_start != sc->tx_end) { 919 outw(iobase + HOST_ADDR_REG, sc->tx_start); 920 txstatus = inw(iobase + MEM_PORT_REG); 921 if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) 922 break; 923 924 txstat2 = inw(iobase + MEM_PORT_REG); 925 txnext = inw(iobase + MEM_PORT_REG); 926 txlen = inw(iobase + MEM_PORT_REG); 927 #ifdef IYDEBUG 928 printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", 929 txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" 930 "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", 931 txnext, txlen); 932 #endif 933 if (txlen & CHAIN) 934 sc->tx_start = txnext; 935 else 936 sc->tx_start = sc->tx_end; 937 ifp->if_flags &= ~IFF_OACTIVE; 938 939 if ((txstat2 & 0x2000) == 0) 940 ++ifp->if_oerrors; 941 if (txstat2 & 0x000f) 942 ifp->if_oerrors += txstat2 & 0x000f; 943 } 944 ifp->if_flags &= ~IFF_OACTIVE; 945 } 946 947 #if 0 948 /* 949 * Compare two Ether/802 addresses for equality, inlined and unrolled for 950 * speed. I'd love to have an inline assembler version of this... 951 */ 952 static inline int 953 ether_equal(one, two) 954 u_char *one, *two; 955 { 956 957 if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || 958 one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) 959 return 0; 960 return 1; 961 } 962 963 /* 964 * Check for a valid address. to_bpf is filled in with one of the following: 965 * 0 -> BPF doesn't get this packet 966 * 1 -> BPF does get this packet 967 * 2 -> BPF does get this packet, but we don't 968 * Return value is true if the packet is for us, and false otherwise. 969 * 970 * This routine is a mess, but it's also critical that it be as fast 971 * as possible. It could be made cleaner if we can assume that the 972 * only client which will fiddle with IFF_PROMISC is BPF. This is 973 * probably a good assumption, but we do not make it here. (Yet.) 974 */ 975 static inline int 976 check_eh(sc, eh, to_bpf) 977 struct iy_softc *sc; 978 struct ether_header *eh; 979 int *to_bpf; 980 { 981 int i; 982 983 switch (sc->promisc) { 984 case IFF_ALLMULTI: 985 /* 986 * Receiving all multicasts, but no unicasts except those 987 * destined for us. 988 */ 989 #if NBPFILTER > 0 990 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ 991 #endif 992 if (eh->ether_dhost[0] & 1) 993 return 1; 994 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 995 return 1; 996 return 0; 997 998 case IFF_PROMISC: 999 /* 1000 * Receiving all packets. These need to be passed on to BPF. 1001 */ 1002 #if NBPFILTER > 0 1003 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1004 #endif 1005 /* If for us, accept and hand up to BPF */ 1006 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 1007 return 1; 1008 1009 #if NBPFILTER > 0 1010 if (*to_bpf) 1011 *to_bpf = 2; /* we don't need to see it */ 1012 #endif 1013 1014 /* 1015 * Not a multicast, so BPF wants to see it but we don't. 1016 */ 1017 if (!(eh->ether_dhost[0] & 1)) 1018 return 1; 1019 1020 /* 1021 * If it's one of our multicast groups, accept it and pass it 1022 * up. 1023 */ 1024 for (i = 0; i < sc->mcast_count; i++) { 1025 if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { 1026 #if NBPFILTER > 0 1027 if (*to_bpf) 1028 *to_bpf = 1; 1029 #endif 1030 return 1; 1031 } 1032 } 1033 return 1; 1034 1035 case IFF_ALLMULTI | IFF_PROMISC: 1036 /* 1037 * Acting as a multicast router, and BPF running at the same 1038 * time. Whew! (Hope this is a fast machine...) 1039 */ 1040 #if NBPFILTER > 0 1041 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1042 #endif 1043 /* We want to see multicasts. */ 1044 if (eh->ether_dhost[0] & 1) 1045 return 1; 1046 1047 /* We want to see our own packets */ 1048 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 1049 return 1; 1050 1051 /* Anything else goes to BPF but nothing else. */ 1052 #if NBPFILTER > 0 1053 if (*to_bpf) 1054 *to_bpf = 2; 1055 #endif 1056 return 1; 1057 1058 case 0: 1059 /* 1060 * Only accept unicast packets destined for us, or multicasts 1061 * for groups that we belong to. For now, we assume that the 1062 * '586 will only return packets that we asked it for. This 1063 * isn't strictly true (it uses hashing for the multicast 1064 * filter), but it will do in this case, and we want to get out 1065 * of here as quickly as possible. 1066 */ 1067 #if NBPFILTER > 0 1068 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1069 #endif 1070 return 1; 1071 } 1072 1073 #ifdef DIAGNOSTIC 1074 panic("check_eh: impossible"); 1075 #endif 1076 } 1077 #endif 1078 1079 int 1080 iyioctl(ifp, cmd, data) 1081 register struct ifnet *ifp; 1082 u_long cmd; 1083 caddr_t data; 1084 { 1085 struct iy_softc *sc; 1086 struct ifaddr *ifa; 1087 struct ifreq *ifr; 1088 int s, error = 0; 1089 1090 sc = ifp->if_softc; 1091 ifa = (struct ifaddr *)data; 1092 ifr = (struct ifreq *)data; 1093 1094 #ifdef IYDEBUG 1095 printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", 1096 ifp, ifp->if_xname, cmd, data); 1097 #endif 1098 1099 s = splimp(); 1100 1101 switch (cmd) { 1102 1103 case SIOCSIFADDR: 1104 ifp->if_flags |= IFF_UP; 1105 1106 switch (ifa->ifa_addr->sa_family) { 1107 #ifdef INET 1108 case AF_INET: 1109 iyinit(sc); 1110 arp_ifinit(&sc->sc_arpcom, ifa); 1111 break; 1112 #endif 1113 #ifdef NS 1114 /* XXX - This code is probably wrong. */ 1115 case AF_NS: 1116 { 1117 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1118 1119 if (ns_nullhost(*ina)) 1120 ina->x_host = 1121 *(union ns_host *)(sc->sc_arpcom.ac_enaddr); 1122 else 1123 bcopy(ina->x_host.c_host, 1124 sc->sc_arpcom.ac_enaddr, 1125 sizeof(sc->sc_arpcom.ac_enaddr)); 1126 /* Set new address. */ 1127 iyinit(sc); 1128 break; 1129 } 1130 #endif /* NS */ 1131 default: 1132 iyinit(sc); 1133 break; 1134 } 1135 break; 1136 1137 case SIOCSIFFLAGS: 1138 sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 1139 if ((ifp->if_flags & IFF_UP) == 0 && 1140 (ifp->if_flags & IFF_RUNNING) != 0) { 1141 /* 1142 * If interface is marked down and it is running, then 1143 * stop it. 1144 */ 1145 iystop(sc); 1146 ifp->if_flags &= ~IFF_RUNNING; 1147 } else if ((ifp->if_flags & IFF_UP) != 0 && 1148 (ifp->if_flags & IFF_RUNNING) == 0) { 1149 /* 1150 * If interface is marked up and it is stopped, then 1151 * start it. 1152 */ 1153 iyinit(sc); 1154 } else { 1155 /* 1156 * Reset the interface to pick up changes in any other 1157 * flags that affect hardware registers. 1158 */ 1159 iystop(sc); 1160 iyinit(sc); 1161 } 1162 #ifdef IYDEBUGX 1163 if (ifp->if_flags & IFF_DEBUG) 1164 sc->sc_debug = IFY_ALL; 1165 else 1166 sc->sc_debug = 0; 1167 #endif 1168 break; 1169 1170 #if 0 /* XXX */ 1171 case SIOCADDMULTI: 1172 case SIOCDELMULTI: 1173 error = (cmd == SIOCADDMULTI) ? 1174 ether_addmulti(ifr, &sc->sc_arpcom): 1175 ether_delmulti(ifr, &sc->sc_arpcom); 1176 1177 if (error == ENETRESET) { 1178 /* 1179 * Multicast list has changed; set the hardware filter 1180 * accordingly. 1181 */ 1182 iy_mc_reset(sc); /* XXX */ 1183 error = 0; 1184 } 1185 break; 1186 #endif 1187 default: 1188 error = EINVAL; 1189 } 1190 splx(s); 1191 return error; 1192 } 1193 1194 #if 0 1195 static void 1196 iy_mc_reset(sc) 1197 struct iy_softc *sc; 1198 { 1199 struct ether_multi *enm; 1200 struct ether_multistep step; 1201 1202 /* 1203 * Step through the list of addresses. 1204 */ 1205 sc->mcast_count = 0; 1206 ETHER_FIRST_MULTI(step, &sc->sc_arpcom, enm); 1207 while (enm) { 1208 if (sc->mcast_count >= MAXMCAST || 1209 bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { 1210 sc->sc_arpcom.ac_if.if_flags |= IFF_ALLMULTI; 1211 iyioctl(&sc->sc_arpcom.ac_if, SIOCSIFFLAGS, (void *)0); 1212 goto setflag; 1213 } 1214 1215 bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); 1216 sc->mcast_count++; 1217 ETHER_NEXT_MULTI(step, enm); 1218 } 1219 setflag: 1220 sc->want_mcsetup = 1; 1221 } 1222 1223 #ifdef IYDEBUG 1224 void 1225 print_rbd(rbd) 1226 volatile struct ie_recv_buf_desc *rbd; 1227 { 1228 1229 printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" 1230 "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, 1231 rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, 1232 rbd->mbz); 1233 } 1234 #endif 1235 #endif 1236 1237 void 1238 iymbuffill(arg) 1239 void *arg; 1240 { 1241 struct iy_softc *sc = (struct iy_softc *)arg; 1242 int s, i; 1243 1244 s = splimp(); 1245 i = sc->last_mb; 1246 do { 1247 if (sc->mb[i] == NULL) 1248 MGET(sc->mb[i], M_DONTWAIT, MT_DATA); 1249 if (sc->mb[i] == NULL) 1250 break; 1251 i = (i + 1) % MAX_MBS; 1252 } while (i != sc->next_mb); 1253 sc->last_mb = i; 1254 /* If the queue was not filled, try again. */ 1255 if (sc->last_mb != sc->next_mb) 1256 timeout(iymbuffill, sc, 1); 1257 splx(s); 1258 } 1259 1260 1261 void 1262 iymbufempty(arg) 1263 void *arg; 1264 { 1265 struct iy_softc *sc = (struct iy_softc *)arg; 1266 int s, i; 1267 1268 s = splimp(); 1269 for (i = 0; i<MAX_MBS; i++) { 1270 if (sc->mb[i]) { 1271 m_freem(sc->mb[i]); 1272 sc->mb[i] = NULL; 1273 } 1274 } 1275 sc->last_mb = sc->next_mb = 0; 1276 untimeout(iymbuffill, sc); 1277 splx(s); 1278 } 1279 1280 void 1281 iyprobemem(sc) 1282 struct iy_softc *sc; 1283 { 1284 int iobase; 1285 int testing; 1286 1287 iobase = sc->sc_iobase; 1288 1289 outw(iobase + HOST_ADDR_REG, 4096-2); 1290 outw(iobase + MEM_PORT_REG, 0); 1291 1292 for (testing=65536; testing >= 4096; testing >>= 1) { 1293 outw(iobase + HOST_ADDR_REG, testing-2); 1294 outw(iobase + MEM_PORT_REG, 0xdead); 1295 outw(iobase + HOST_ADDR_REG, testing-2); 1296 if (inw(iobase + MEM_PORT_REG) != 0xdead) { 1297 #ifdef IYMEMDEBUG 1298 printf("%s: Didn't keep 0xdead at 0x%x\n", 1299 sc->sc_dev.dv_xname, testing-2); 1300 #endif 1301 continue; 1302 } 1303 1304 outw(iobase + HOST_ADDR_REG, testing-2); 1305 outw(iobase + MEM_PORT_REG, 0xbeef); 1306 outw(iobase + HOST_ADDR_REG, testing-2); 1307 if (inw(iobase + MEM_PORT_REG) != 0xbeef) { 1308 #ifdef IYMEMDEBUG 1309 printf("%s: Didn't keep 0xbeef at 0x%x\n", 1310 sc->sc_dev.dv_xname, testing-2); 1311 #endif 1312 continue; 1313 } 1314 1315 outw(iobase + HOST_ADDR_REG, 0); 1316 outw(iobase + MEM_PORT_REG, 0); 1317 outw(iobase + HOST_ADDR_REG, testing >> 1); 1318 outw(iobase + MEM_PORT_REG, testing >> 1); 1319 outw(iobase + HOST_ADDR_REG, 0); 1320 if (inw(iobase + MEM_PORT_REG) == (testing >> 1)) { 1321 #ifdef IYMEMDEBUG 1322 printf("%s: 0x%x alias of 0x0\n", 1323 sc->sc_dev.dv_xname, testing >> 1); 1324 #endif 1325 continue; 1326 } 1327 1328 break; 1329 } 1330 1331 sc->sram = testing; 1332 1333 switch(testing) { 1334 case 65536: 1335 /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ 1336 sc->rx_size = 44*1024; 1337 break; 1338 1339 case 32768: 1340 /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ 1341 sc->rx_size = 22*1024; 1342 break; 1343 1344 case 16384: 1345 /* 1 NFS packet + overhead RX, 4 big packets TX */ 1346 sc->rx_size = 10*1024; 1347 break; 1348 default: 1349 sc->rx_size = testing/2; 1350 break; 1351 } 1352 sc->tx_size = testing - sc->rx_size; 1353 } 1354
Indexes created Thu Sep 25 16:09:42 GMT 2025