if_iy.c revision 1.4
1 /* $NetBSD: if_iy.c,v 1.4 1996/05/12 23:52:53 mycroft 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) /* | BNC_BIT XXX*/; 417 outb(iobase + MEDIA_SELECT, temp); 418 #ifdef IYDEBUG 419 printf("changed to 0x%b\n", 420 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 421 #endif 422 423 outb(iobase, BANK_SEL(1)); 424 425 temp = inb(iobase + INT_NO_REG); 426 outb(iobase + INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 427 428 #ifdef IYDEBUG 429 printf("%s: int no was %b\n", sc->sc_dev.dv_xname, 430 temp, "\020\4bad_irq\010flash/boot present"); 431 temp = inb(iobase + INT_NO_REG); 432 printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname, 433 temp, "\020\4BAD IRQ\010flash/boot present"); 434 #endif 435 436 437 outb(iobase + RCV_LOWER_LIMIT_REG, 0); 438 outb(iobase + RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8); 439 outb(iobase + XMT_LOWER_LIMIT_REG, sc->rx_size >> 8); 440 outb(iobase + XMT_UPPER_LIMIT_REG, sc->sram >> 8); 441 442 temp = inb(iobase + REG1); 443 #ifdef IYDEBUG 444 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 445 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 446 #endif 447 outb(iobase + REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ 448 449 #ifdef IYDEBUG 450 temp = inb(iobase + REG1); 451 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 452 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 453 #endif 454 455 outb(iobase, BANK_SEL(0)); 456 457 outb(iobase + INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); 458 outb(iobase + STATUS_REG, ALL_INTS); /* clear ints */ 459 460 outw(iobase + RCV_START_LOW, 0); 461 outw(iobase + RCV_STOP_LOW, sc->rx_size - 2); 462 sc->rx_start = 0; 463 464 outb(iobase, SEL_RESET_CMD); 465 DELAY(200); 466 467 outw(iobase + XMT_ADDR_REG, sc->rx_size); 468 469 sc->tx_start = sc->tx_end = sc->rx_size; 470 sc->tx_last = 0; 471 472 outb(iobase, RCV_ENABLE_CMD); 473 474 ifp->if_flags |= IFF_RUNNING; 475 ifp->if_flags &= ~IFF_OACTIVE; 476 } 477 478 void 479 iystart(ifp) 480 struct ifnet *ifp; 481 { 482 struct iy_softc *sc; 483 int iobase; 484 485 struct mbuf *m0, *m; 486 u_int len, pad, last, end; 487 u_int llen, residual; 488 int avail; 489 caddr_t data; 490 u_int16_t resval, stat; 491 492 #ifdef IYDEBUG 493 printf("iystart called\n"); 494 #endif 495 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 496 return; 497 498 sc = ifp->if_softc; 499 iobase = sc->sc_iobase; 500 501 while ((m0 = ifp->if_snd.ifq_head) != NULL) { 502 #ifdef IYDEBUG 503 printf("%s: trying to write another packet to the hardware\n", 504 sc->sc_dev.dv_xname); 505 #endif 506 507 /* We need to use m->m_pkthdr.len, so require the header */ 508 if ((m0->m_flags & M_PKTHDR) == 0) 509 panic("iystart: no header mbuf"); 510 511 len = m0->m_pkthdr.len; 512 pad = len & 1; 513 514 #ifdef IYDEBUG 515 printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len); 516 #endif 517 if (len < ETHER_MIN_LEN) { 518 pad = ETHER_MIN_LEN - len; 519 } 520 521 if (len + pad > ETHER_MAX_LEN) { 522 /* packet is obviously too large: toss it */ 523 ++ifp->if_oerrors; 524 IF_DEQUEUE(&ifp->if_snd, m0); 525 m_freem(m0); 526 continue; 527 } 528 529 #if NBPFILTER > 0 530 if (ifp->if_bpf) 531 bpf_mtap(ifp->if_bpf, m0); 532 #endif 533 534 avail = sc->tx_start - sc->tx_end; 535 if (avail <= 0) 536 avail += sc->tx_size; 537 538 #ifdef IYDEBUG 539 printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail); 540 #endif 541 /* 542 * we MUST RUN at splnet here --- 543 * XXX todo: or even turn off the boards ints ??? hm... 544 */ 545 546 /* See if there is room to put another packet in the buffer. */ 547 548 if ((len+pad+2*I595_XMT_HDRLEN) > avail) { 549 printf("%s: len = %d, avail = %d, setting OACTIVE\n", 550 sc->sc_dev.dv_xname, len, avail); 551 ifp->if_flags |= IFF_OACTIVE; 552 return; 553 } 554 555 /* we know it fits in the hardware now, so dequeue it */ 556 IF_DEQUEUE(&ifp->if_snd, m0); 557 558 last = sc->tx_end; 559 end = last + pad + len + I595_XMT_HDRLEN; 560 561 if (end >= sc->sram) { 562 if ((sc->sram - last) <= I595_XMT_HDRLEN) { 563 /* keep header in one piece */ 564 last = sc->rx_size; 565 end = last + pad + len + I595_XMT_HDRLEN; 566 } else 567 end -= sc->tx_size; 568 } 569 570 outw(iobase + HOST_ADDR_REG, last); 571 outw(iobase + MEM_PORT_REG, XMT_CMD); 572 outw(iobase + MEM_PORT_REG, 0); 573 outw(iobase + MEM_PORT_REG, 0); 574 outw(iobase + MEM_PORT_REG, len + pad); 575 576 residual = resval = 0; 577 578 while ((m = m0)!=0) { 579 data = mtod(m, caddr_t); 580 llen = m->m_len; 581 if (residual) { 582 #ifdef IYDEBUG 583 printf("%s: merging residual with next mbuf.\n", 584 sc->sc_dev.dv_xname); 585 #endif 586 resval |= *data << 8; 587 outw(iobase + MEM_PORT_REG, resval); 588 --llen; 589 ++data; 590 } 591 if (llen > 1) 592 outsw(iobase + MEM_PORT_REG, data, llen>>1); 593 residual = llen & 1; 594 if (residual) { 595 resval = *(data + llen - 1); 596 #ifdef IYDEBUG 597 printf("%s: got odd mbuf to send.\n", 598 sc->sc_dev.dv_xname); 599 #endif 600 } 601 602 MFREE(m, m0); 603 } 604 605 if (residual) 606 outw(iobase + MEM_PORT_REG, resval); 607 608 pad >>= 1; 609 while (pad-- > 0) 610 outw(iobase + MEM_PORT_REG, 0); 611 612 #ifdef IYDEBUG 613 printf("%s: new last = 0x%x, end = 0x%x.\n", 614 sc->sc_dev.dv_xname, last, end); 615 printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", 616 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 617 #endif 618 619 if (sc->tx_start != sc->tx_end) { 620 outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_COUNT); 621 stat = inw(iobase + MEM_PORT_REG); 622 623 outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); 624 outw(iobase + MEM_PORT_REG, last); 625 outw(iobase + MEM_PORT_REG, stat | CHAIN); 626 #ifdef IYDEBUG 627 printf("%s: setting 0x%x to 0x%x\n", 628 sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, 629 stat | CHAIN); 630 #endif 631 } 632 stat = inw(iobase + MEM_PORT_REG); /* dummy read */ 633 634 /* XXX todo: enable ints here if disabled */ 635 636 ++ifp->if_opackets; 637 638 if (sc->tx_start == sc->tx_end) { 639 outw(iobase + XMT_ADDR_REG, last); 640 outb(iobase, XMT_CMD); 641 sc->tx_start = last; 642 #ifdef IYDEBUG 643 printf("%s: writing 0x%x to XAR and giving XCMD\n", 644 sc->sc_dev.dv_xname, last); 645 #endif 646 } else { 647 outb(iobase, RESUME_XMT_CMD); 648 #ifdef IYDEBUG 649 printf("%s: giving RESUME_XCMD\n", 650 sc->sc_dev.dv_xname); 651 #endif 652 } 653 sc->tx_last = last; 654 sc->tx_end = end; 655 } 656 } 657 658 659 static __inline void 660 eepromwritebit(eio, what) 661 int eio, what; 662 { 663 outb(eio, what); 664 delay(1); 665 outb(eio, what|EESK); 666 delay(1); 667 outb(eio, what); 668 delay(1); 669 } 670 671 static __inline int 672 eepromreadbit(eio) 673 int eio; 674 { 675 int b; 676 677 outb(eio, EECS|EESK); 678 delay(1); 679 b = inb(eio); 680 outb(eio, EECS); 681 delay(1); 682 683 return ((b & EEDO) != 0); 684 } 685 686 static u_int16_t 687 eepromread(io, offset) 688 int io, offset; 689 { 690 volatile int i; 691 volatile int j; 692 volatile u_int16_t readval; 693 int eio = io+EEPROM_REG; 694 695 outb(io, BANK_SEL(2)); 696 delay(1); 697 outb(io, EECS); 698 delay(1); 699 700 eepromwritebit(eio, EECS|EEDI); 701 eepromwritebit(eio, EECS|EEDI); 702 eepromwritebit(eio, EECS); 703 704 for (j=5; j>=0; --j) { 705 if ((offset>>j) & 1) 706 eepromwritebit(eio, EECS|EEDI); 707 else 708 eepromwritebit(eio, EECS); 709 } 710 711 for (readval=0, i=0; i<16; ++i) { 712 readval<<=1; 713 readval |= eepromreadbit(eio); 714 } 715 716 outb(eio, 0|EESK); 717 delay(1); 718 outb(eio, 0); 719 720 outb(eio, BANK_SEL(0)); 721 722 return readval; 723 } 724 725 /* 726 * Device timeout/watchdog routine. Entered if the device neglects to generate 727 * an interrupt after a transmit has been started on it. 728 */ 729 void 730 iywatchdog(ifp) 731 struct ifnet *ifp; 732 { 733 struct iy_softc *sc = ifp->if_softc; 734 735 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 736 ++sc->sc_arpcom.ac_if.if_oerrors; 737 iyreset(sc); 738 } 739 740 /* 741 * What to do upon receipt of an interrupt. 742 */ 743 int 744 iyintr(arg) 745 void *arg; 746 { 747 struct iy_softc *sc = arg; 748 int iobase; 749 register u_short status; 750 751 iobase = sc->sc_iobase; 752 status = inb(iobase + STATUS_REG); 753 #ifdef IYDEBUG 754 if (status & ALL_INTS) { 755 printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, 756 "\020\1RX_STP\2RX\3TX\4EXEC"); 757 if (status & EXEC_INT) 758 printf(" event %b\n", inb(iobase), 759 "\020\6ABORT"); 760 else 761 printf("\n"); 762 } 763 #endif 764 if ((status & (RX_INT | TX_INT) == 0)) 765 return 0; 766 767 if (status & RX_INT) { 768 iy_intr_rx(sc); 769 outb(iobase + STATUS_REG, RX_INT); 770 } else if (status & TX_INT) { 771 iy_intr_tx(sc); 772 outb(iobase + STATUS_REG, TX_INT); 773 } 774 return 1; 775 } 776 777 void 778 iyget(sc, iobase, rxlen) 779 struct iy_softc *sc; 780 int iobase, rxlen; 781 { 782 struct mbuf *m, *top, **mp; 783 struct ether_header *eh; 784 struct ifnet *ifp; 785 int len; 786 787 ifp = &sc->sc_arpcom.ac_if; 788 789 m = sc->mb[sc->next_mb]; 790 sc->mb[sc->next_mb] = 0; 791 if (m == 0) { 792 MGETHDR(m, M_DONTWAIT, MT_DATA); 793 if (m == 0) 794 goto dropped; 795 } else { 796 if (sc->last_mb == sc->next_mb) 797 timeout(iymbuffill, sc, 1); 798 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 799 m->m_data = m->m_pktdat; 800 m->m_flags = M_PKTHDR; 801 } 802 m->m_pkthdr.rcvif = ifp; 803 m->m_pkthdr.len = rxlen; 804 len = MHLEN; 805 top = 0; 806 mp = ⊤ 807 808 while (rxlen > 0) { 809 if (top) { 810 m = sc->mb[sc->next_mb]; 811 sc->mb[sc->next_mb] = 0; 812 if (m == 0) { 813 MGET(m, M_DONTWAIT, MT_DATA); 814 if (m == 0) { 815 m_freem(top); 816 goto dropped; 817 } 818 } else { 819 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 820 } 821 len = MLEN; 822 } 823 if (rxlen >= MINCLSIZE) { 824 MCLGET(m, M_DONTWAIT); 825 if (m->m_flags & M_EXT) 826 len = MCLBYTES; 827 } 828 len = min(rxlen, len); 829 if (len > 1) { 830 len &= ~1; 831 insw(iobase + MEM_PORT_REG, mtod(m, caddr_t), len/2); 832 } else { 833 #ifdef IYDEBUG 834 printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); 835 #endif 836 *(mtod(m, caddr_t)) = inw(iobase + MEM_PORT_REG); 837 } 838 m->m_len = len; 839 rxlen -= len; 840 *mp = m; 841 mp = &m->m_next; 842 } 843 /* XXX receive the top here */ 844 ++ifp->if_ipackets; 845 846 eh = mtod(top, struct ether_header *); 847 848 #if NBPFILTER > 0 849 if (ifp->if_bpf) { 850 bpf_mtap(ifp->if_bpf, top); 851 if ((ifp->if_flags & IFF_PROMISC) && 852 (eh->ether_dhost[0] & 1) == 0 && 853 bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr, 854 sizeof(eh->ether_dhost)) != 0) { 855 m_freem(top); 856 return; 857 } 858 } 859 #endif 860 m_adj(top, sizeof(struct ether_header)); 861 ether_input(ifp, eh, top); 862 return; 863 864 dropped: 865 ++ifp->if_ierrors; 866 return; 867 } 868 void 869 iy_intr_rx(sc) 870 struct iy_softc *sc; 871 { 872 struct ifnet *ifp; 873 int iobase; 874 u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; 875 876 iobase = sc->sc_iobase; 877 ifp = &sc->sc_arpcom.ac_if; 878 879 rxadrs = sc->rx_start; 880 outw(iobase + HOST_ADDR_REG, rxadrs); 881 rxevnt = inw(iobase + MEM_PORT_REG); 882 rxnext = 0; 883 884 while (rxevnt == RCV_DONE) { 885 rxstatus = inw(iobase + MEM_PORT_REG); 886 rxnext = inw(iobase + MEM_PORT_REG); 887 rxlen = inw(iobase + MEM_PORT_REG); 888 #ifdef IYDEBUG 889 printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", 890 sc->sc_dev.dv_xname, rxadrs, rxstatus, 891 "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" 892 "\014CRCERR\015LENERR\016RCVOK\020TYP", 893 rxnext, rxlen); 894 #endif 895 iyget(sc, iobase, rxlen); 896 897 /* move stop address */ 898 outw(iobase + RCV_STOP_LOW, 899 rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); 900 901 outw(iobase + HOST_ADDR_REG, rxnext); 902 rxadrs = rxnext; 903 rxevnt = inw(iobase + MEM_PORT_REG); 904 } 905 sc->rx_start = rxnext; 906 } 907 908 void 909 iy_intr_tx(sc) 910 struct iy_softc *sc; 911 { 912 int iobase; 913 struct ifnet *ifp; 914 u_int txstatus, txstat2, txlen, txnext; 915 916 ifp = &sc->sc_arpcom.ac_if; 917 iobase = sc->sc_iobase; 918 919 while (sc->tx_start != sc->tx_end) { 920 outw(iobase + HOST_ADDR_REG, sc->tx_start); 921 txstatus = inw(iobase + MEM_PORT_REG); 922 if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) 923 break; 924 925 txstat2 = inw(iobase + MEM_PORT_REG); 926 txnext = inw(iobase + MEM_PORT_REG); 927 txlen = inw(iobase + MEM_PORT_REG); 928 #ifdef IYDEBUG 929 printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", 930 txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" 931 "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", 932 txnext, txlen); 933 #endif 934 if (txlen & CHAIN) 935 sc->tx_start = txnext; 936 else 937 sc->tx_start = sc->tx_end; 938 ifp->if_flags &= ~IFF_OACTIVE; 939 940 if ((txstat2 & 0x2000) == 0) 941 ++ifp->if_oerrors; 942 if (txstat2 & 0x000f) 943 ifp->if_oerrors += txstat2 & 0x000f; 944 } 945 ifp->if_flags &= ~IFF_OACTIVE; 946 } 947 948 #if 0 949 /* 950 * Compare two Ether/802 addresses for equality, inlined and unrolled for 951 * speed. I'd love to have an inline assembler version of this... 952 */ 953 static inline int 954 ether_equal(one, two) 955 u_char *one, *two; 956 { 957 958 if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || 959 one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) 960 return 0; 961 return 1; 962 } 963 964 /* 965 * Check for a valid address. to_bpf is filled in with one of the following: 966 * 0 -> BPF doesn't get this packet 967 * 1 -> BPF does get this packet 968 * 2 -> BPF does get this packet, but we don't 969 * Return value is true if the packet is for us, and false otherwise. 970 * 971 * This routine is a mess, but it's also critical that it be as fast 972 * as possible. It could be made cleaner if we can assume that the 973 * only client which will fiddle with IFF_PROMISC is BPF. This is 974 * probably a good assumption, but we do not make it here. (Yet.) 975 */ 976 static inline int 977 check_eh(sc, eh, to_bpf) 978 struct iy_softc *sc; 979 struct ether_header *eh; 980 int *to_bpf; 981 { 982 int i; 983 984 switch (sc->promisc) { 985 case IFF_ALLMULTI: 986 /* 987 * Receiving all multicasts, but no unicasts except those 988 * destined for us. 989 */ 990 #if NBPFILTER > 0 991 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ 992 #endif 993 if (eh->ether_dhost[0] & 1) 994 return 1; 995 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 996 return 1; 997 return 0; 998 999 case IFF_PROMISC: 1000 /* 1001 * Receiving all packets. These need to be passed on to BPF. 1002 */ 1003 #if NBPFILTER > 0 1004 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1005 #endif 1006 /* If for us, accept and hand up to BPF */ 1007 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 1008 return 1; 1009 1010 #if NBPFILTER > 0 1011 if (*to_bpf) 1012 *to_bpf = 2; /* we don't need to see it */ 1013 #endif 1014 1015 /* 1016 * Not a multicast, so BPF wants to see it but we don't. 1017 */ 1018 if (!(eh->ether_dhost[0] & 1)) 1019 return 1; 1020 1021 /* 1022 * If it's one of our multicast groups, accept it and pass it 1023 * up. 1024 */ 1025 for (i = 0; i < sc->mcast_count; i++) { 1026 if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { 1027 #if NBPFILTER > 0 1028 if (*to_bpf) 1029 *to_bpf = 1; 1030 #endif 1031 return 1; 1032 } 1033 } 1034 return 1; 1035 1036 case IFF_ALLMULTI | IFF_PROMISC: 1037 /* 1038 * Acting as a multicast router, and BPF running at the same 1039 * time. Whew! (Hope this is a fast machine...) 1040 */ 1041 #if NBPFILTER > 0 1042 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1043 #endif 1044 /* We want to see multicasts. */ 1045 if (eh->ether_dhost[0] & 1) 1046 return 1; 1047 1048 /* We want to see our own packets */ 1049 if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) 1050 return 1; 1051 1052 /* Anything else goes to BPF but nothing else. */ 1053 #if NBPFILTER > 0 1054 if (*to_bpf) 1055 *to_bpf = 2; 1056 #endif 1057 return 1; 1058 1059 case 0: 1060 /* 1061 * Only accept unicast packets destined for us, or multicasts 1062 * for groups that we belong to. For now, we assume that the 1063 * '586 will only return packets that we asked it for. This 1064 * isn't strictly true (it uses hashing for the multicast 1065 * filter), but it will do in this case, and we want to get out 1066 * of here as quickly as possible. 1067 */ 1068 #if NBPFILTER > 0 1069 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); 1070 #endif 1071 return 1; 1072 } 1073 1074 #ifdef DIAGNOSTIC 1075 panic("check_eh: impossible"); 1076 #endif 1077 } 1078 #endif 1079 1080 int 1081 iyioctl(ifp, cmd, data) 1082 register struct ifnet *ifp; 1083 u_long cmd; 1084 caddr_t data; 1085 { 1086 struct iy_softc *sc; 1087 struct ifaddr *ifa; 1088 struct ifreq *ifr; 1089 int s, error = 0; 1090 1091 sc = ifp->if_softc; 1092 ifa = (struct ifaddr *)data; 1093 ifr = (struct ifreq *)data; 1094 1095 #ifdef IYDEBUG 1096 printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", 1097 ifp, ifp->if_xname, cmd, data); 1098 #endif 1099 1100 s = splimp(); 1101 1102 switch (cmd) { 1103 1104 case SIOCSIFADDR: 1105 ifp->if_flags |= IFF_UP; 1106 1107 switch (ifa->ifa_addr->sa_family) { 1108 #ifdef INET 1109 case AF_INET: 1110 iyinit(sc); 1111 arp_ifinit(&sc->sc_arpcom, ifa); 1112 break; 1113 #endif 1114 #ifdef NS 1115 /* XXX - This code is probably wrong. */ 1116 case AF_NS: 1117 { 1118 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1119 1120 if (ns_nullhost(*ina)) 1121 ina->x_host = 1122 *(union ns_host *)(sc->sc_arpcom.ac_enaddr); 1123 else 1124 bcopy(ina->x_host.c_host, 1125 sc->sc_arpcom.ac_enaddr, 1126 sizeof(sc->sc_arpcom.ac_enaddr)); 1127 /* Set new address. */ 1128 iyinit(sc); 1129 break; 1130 } 1131 #endif /* NS */ 1132 default: 1133 iyinit(sc); 1134 break; 1135 } 1136 break; 1137 1138 case SIOCSIFFLAGS: 1139 sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 1140 if ((ifp->if_flags & IFF_UP) == 0 && 1141 (ifp->if_flags & IFF_RUNNING) != 0) { 1142 /* 1143 * If interface is marked down and it is running, then 1144 * stop it. 1145 */ 1146 iystop(sc); 1147 ifp->if_flags &= ~IFF_RUNNING; 1148 } else if ((ifp->if_flags & IFF_UP) != 0 && 1149 (ifp->if_flags & IFF_RUNNING) == 0) { 1150 /* 1151 * If interface is marked up and it is stopped, then 1152 * start it. 1153 */ 1154 iyinit(sc); 1155 } else { 1156 /* 1157 * Reset the interface to pick up changes in any other 1158 * flags that affect hardware registers. 1159 */ 1160 iystop(sc); 1161 iyinit(sc); 1162 } 1163 #ifdef IYDEBUGX 1164 if (ifp->if_flags & IFF_DEBUG) 1165 sc->sc_debug = IFY_ALL; 1166 else 1167 sc->sc_debug = 0; 1168 #endif 1169 break; 1170 1171 #if 0 /* XXX */ 1172 case SIOCADDMULTI: 1173 case SIOCDELMULTI: 1174 error = (cmd == SIOCADDMULTI) ? 1175 ether_addmulti(ifr, &sc->sc_arpcom): 1176 ether_delmulti(ifr, &sc->sc_arpcom); 1177 1178 if (error == ENETRESET) { 1179 /* 1180 * Multicast list has changed; set the hardware filter 1181 * accordingly. 1182 */ 1183 iy_mc_reset(sc); /* XXX */ 1184 error = 0; 1185 } 1186 break; 1187 #endif 1188 default: 1189 error = EINVAL; 1190 } 1191 splx(s); 1192 return error; 1193 } 1194 1195 #if 0 1196 static void 1197 iy_mc_reset(sc) 1198 struct iy_softc *sc; 1199 { 1200 struct ether_multi *enm; 1201 struct ether_multistep step; 1202 1203 /* 1204 * Step through the list of addresses. 1205 */ 1206 sc->mcast_count = 0; 1207 ETHER_FIRST_MULTI(step, &sc->sc_arpcom, enm); 1208 while (enm) { 1209 if (sc->mcast_count >= MAXMCAST || 1210 bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { 1211 sc->sc_arpcom.ac_if.if_flags |= IFF_ALLMULTI; 1212 iyioctl(&sc->sc_arpcom.ac_if, SIOCSIFFLAGS, (void *)0); 1213 goto setflag; 1214 } 1215 1216 bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); 1217 sc->mcast_count++; 1218 ETHER_NEXT_MULTI(step, enm); 1219 } 1220 setflag: 1221 sc->want_mcsetup = 1; 1222 } 1223 1224 #ifdef IYDEBUG 1225 void 1226 print_rbd(rbd) 1227 volatile struct ie_recv_buf_desc *rbd; 1228 { 1229 1230 printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" 1231 "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, 1232 rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, 1233 rbd->mbz); 1234 } 1235 #endif 1236 #endif 1237 1238 void 1239 iymbuffill(arg) 1240 void *arg; 1241 { 1242 struct iy_softc *sc = (struct iy_softc *)arg; 1243 int s, i; 1244 1245 s = splimp(); 1246 i = sc->last_mb; 1247 do { 1248 if (sc->mb[i] == NULL) 1249 MGET(sc->mb[i], M_DONTWAIT, MT_DATA); 1250 if (sc->mb[i] == NULL) 1251 break; 1252 i = (i + 1) % MAX_MBS; 1253 } while (i != sc->next_mb); 1254 sc->last_mb = i; 1255 /* If the queue was not filled, try again. */ 1256 if (sc->last_mb != sc->next_mb) 1257 timeout(iymbuffill, sc, 1); 1258 splx(s); 1259 } 1260 1261 1262 void 1263 iymbufempty(arg) 1264 void *arg; 1265 { 1266 struct iy_softc *sc = (struct iy_softc *)arg; 1267 int s, i; 1268 1269 s = splimp(); 1270 for (i = 0; i<MAX_MBS; i++) { 1271 if (sc->mb[i]) { 1272 m_freem(sc->mb[i]); 1273 sc->mb[i] = NULL; 1274 } 1275 } 1276 sc->last_mb = sc->next_mb = 0; 1277 untimeout(iymbuffill, sc); 1278 splx(s); 1279 } 1280 1281 void 1282 iyprobemem(sc) 1283 struct iy_softc *sc; 1284 { 1285 int iobase; 1286 int testing; 1287 1288 iobase = sc->sc_iobase; 1289 1290 outw(iobase + HOST_ADDR_REG, 4096-2); 1291 outw(iobase + MEM_PORT_REG, 0); 1292 1293 for (testing=65536; testing >= 4096; testing >>= 1) { 1294 outw(iobase + HOST_ADDR_REG, testing-2); 1295 outw(iobase + MEM_PORT_REG, 0xdead); 1296 outw(iobase + HOST_ADDR_REG, testing-2); 1297 if (inw(iobase + MEM_PORT_REG) != 0xdead) { 1298 #ifdef IYMEMDEBUG 1299 printf("%s: Didn't keep 0xdead at 0x%x\n", 1300 sc->sc_dev.dv_xname, testing-2); 1301 #endif 1302 continue; 1303 } 1304 1305 outw(iobase + HOST_ADDR_REG, testing-2); 1306 outw(iobase + MEM_PORT_REG, 0xbeef); 1307 outw(iobase + HOST_ADDR_REG, testing-2); 1308 if (inw(iobase + MEM_PORT_REG) != 0xbeef) { 1309 #ifdef IYMEMDEBUG 1310 printf("%s: Didn't keep 0xbeef at 0x%x\n", 1311 sc->sc_dev.dv_xname, testing-2); 1312 #endif 1313 continue; 1314 } 1315 1316 outw(iobase + HOST_ADDR_REG, 0); 1317 outw(iobase + MEM_PORT_REG, 0); 1318 outw(iobase + HOST_ADDR_REG, testing >> 1); 1319 outw(iobase + MEM_PORT_REG, testing >> 1); 1320 outw(iobase + HOST_ADDR_REG, 0); 1321 if (inw(iobase + MEM_PORT_REG) == (testing >> 1)) { 1322 #ifdef IYMEMDEBUG 1323 printf("%s: 0x%x alias of 0x0\n", 1324 sc->sc_dev.dv_xname, testing >> 1); 1325 #endif 1326 continue; 1327 } 1328 1329 break; 1330 } 1331 1332 sc->sram = testing; 1333 1334 switch(testing) { 1335 case 65536: 1336 /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ 1337 sc->rx_size = 44*1024; 1338 break; 1339 1340 case 32768: 1341 /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ 1342 sc->rx_size = 22*1024; 1343 break; 1344 1345 case 16384: 1346 /* 1 NFS packet + overhead RX, 4 big packets TX */ 1347 sc->rx_size = 10*1024; 1348 break; 1349 default: 1350 sc->rx_size = testing/2; 1351 break; 1352 } 1353 sc->tx_size = testing - sc->rx_size; 1354 } 1355
Indexes created Thu Sep 25 16:09:42 GMT 2025