if_es.c revision 1.25
1 /* $NetBSD: if_es.c,v 1.25 2000/10/01 23:32:39 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Michael L. Hitch 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Michael L. Hitch. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * SMC 91C90 Single-Chip Ethernet Controller 35 */ 36 #include "opt_ddb.h" 37 #include "opt_inet.h" 38 #include "opt_ns.h" 39 40 #include "bpfilter.h" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/mbuf.h> 45 #include <sys/buf.h> 46 #include <sys/protosw.h> 47 #include <sys/socket.h> 48 #include <sys/syslog.h> 49 #include <sys/ioctl.h> 50 #include <sys/errno.h> 51 #include <sys/device.h> 52 53 #include <net/if.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 57 #ifdef INET 58 #include <netinet/in.h> 59 #include <netinet/in_systm.h> 60 #include <netinet/in_var.h> 61 #include <netinet/ip.h> 62 #include <netinet/if_inarp.h> 63 #endif 64 65 #ifdef NS 66 #include <netns/ns.h> 67 #include <netns/ns_if.h> 68 #endif 69 70 #include <machine/cpu.h> 71 #include <machine/mtpr.h> 72 #include <amiga/amiga/device.h> 73 #include <amiga/amiga/isr.h> 74 #include <amiga/dev/zbusvar.h> 75 #include <amiga/dev/if_esreg.h> 76 77 #define SWAP(x) (((x & 0xff) << 8) | ((x >> 8) & 0xff)) 78 79 #define USEPKTBUF 80 81 /* 82 * Ethernet software status per interface. 83 * 84 * Each interface is referenced by a network interface structure, 85 * es_if, which the routing code uses to locate the interface. 86 * This structure contains the output queue for the interface, its address, ... 87 */ 88 struct es_softc { 89 struct device sc_dev; 90 struct isr sc_isr; 91 struct ethercom sc_ethercom; /* common Ethernet structures */ 92 void *sc_base; /* base address of board */ 93 short sc_iflags; 94 unsigned short sc_intctl; 95 #ifdef ESDEBUG 96 int sc_debug; 97 short sc_intbusy; /* counter for interrupt rentered */ 98 short sc_smcbusy; /* counter for other rentry checks */ 99 #endif 100 }; 101 102 #if NBPFILTER > 0 103 #include <net/bpf.h> 104 #include <net/bpfdesc.h> 105 #endif 106 107 #ifdef ESDEBUG 108 /* console error messages */ 109 int esdebug = 0; 110 int estxints = 0; /* IST_TX with TX enabled */ 111 int estxint2 = 0; /* IST_TX active after IST_TX_EMPTY */ 112 int estxint3 = 0; /* IST_TX interrupt processed */ 113 int estxint4 = 0; /* ~TEMPTY counts */ 114 int estxint5 = 0; /* IST_TX_EMPTY interrupts */ 115 void es_dump_smcregs __P((char *, union smcregs *)); 116 #endif 117 118 int esintr __P((void *)); 119 void esstart __P((struct ifnet *)); 120 void eswatchdog __P((struct ifnet *)); 121 int esioctl __P((struct ifnet *, u_long, caddr_t)); 122 void esrint __P((struct es_softc *)); 123 void estint __P((struct es_softc *)); 124 void esinit __P((struct es_softc *)); 125 void esreset __P((struct es_softc *)); 126 void esstop __P((struct es_softc *)); 127 128 int esmatch __P((struct device *, struct cfdata *, void *)); 129 void esattach __P((struct device *, struct device *, void *)); 130 131 struct cfattach es_ca = { 132 sizeof(struct es_softc), esmatch, esattach 133 }; 134 135 int 136 esmatch(parent, cfp, aux) 137 struct device *parent; 138 struct cfdata *cfp; 139 void *aux; 140 { 141 struct zbus_args *zap = aux; 142 143 /* Ameristar A4066 ethernet card */ 144 if (zap->manid == 1053 && zap->prodid == 10) 145 return(1); 146 147 return (0); 148 } 149 150 /* 151 * Interface exists: make available by filling in network interface 152 * record. System will initialize the interface when it is ready 153 * to accept packets. 154 */ 155 void 156 esattach(parent, self, aux) 157 struct device *parent, *self; 158 void *aux; 159 { 160 struct es_softc *sc = (void *)self; 161 struct zbus_args *zap = aux; 162 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 163 unsigned long ser; 164 u_int8_t myaddr[ETHER_ADDR_LEN]; 165 166 sc->sc_base = zap->va; 167 168 /* 169 * Manufacturer decides the 3 first bytes, i.e. ethernet vendor ID. 170 * (Currently only Ameristar.) 171 */ 172 myaddr[0] = 0x00; 173 myaddr[1] = 0x00; 174 myaddr[2] = 0x9f; 175 176 /* 177 * Serial number for board contains last 3 bytes. 178 */ 179 ser = (unsigned long) zap->serno; 180 181 myaddr[3] = (ser >> 16) & 0xff; 182 myaddr[4] = (ser >> 8) & 0xff; 183 myaddr[5] = (ser ) & 0xff; 184 185 /* Initialize ifnet structure. */ 186 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 187 ifp->if_softc = sc; 188 ifp->if_ioctl = esioctl; 189 ifp->if_start = esstart; 190 ifp->if_watchdog = eswatchdog; 191 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | 192 IFF_MULTICAST; 193 194 /* Attach the interface. */ 195 if_attach(ifp); 196 ether_ifattach(ifp, myaddr); 197 198 /* Print additional info when attached. */ 199 printf(": address %s\n", ether_sprintf(myaddr)); 200 201 #if NBPFILTER > 0 202 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 203 #endif 204 205 sc->sc_isr.isr_intr = esintr; 206 sc->sc_isr.isr_arg = sc; 207 sc->sc_isr.isr_ipl = 2; 208 add_isr(&sc->sc_isr); 209 } 210 211 #ifdef ESDEBUG 212 void 213 es_dump_smcregs(where, smc) 214 char *where; 215 union smcregs *smc; 216 { 217 u_short cur_bank = smc->b0.bsr & BSR_MASK; 218 219 printf("SMC registers %p from %s bank %04x\n", smc, where, 220 smc->b0.bsr); 221 smc->b0.bsr = BSR_BANK0; 222 printf("TCR %04x EPHSR %04x RCR %04x ECR %04x MIR %04x MCR %04x\n", 223 SWAP(smc->b0.tcr), SWAP(smc->b0.ephsr), SWAP(smc->b0.rcr), 224 SWAP(smc->b0.ecr), SWAP(smc->b0.mir), SWAP(smc->b0.mcr)); 225 smc->b1.bsr = BSR_BANK1; 226 printf("CR %04x BAR %04x IAR %04x %04x %04x GPR %04x CTR %04x\n", 227 SWAP(smc->b1.cr), SWAP(smc->b1.bar), smc->b1.iar[0], smc->b1.iar[1], 228 smc->b1.iar[2], smc->b1.gpr, SWAP(smc->b1.ctr)); 229 smc->b2.bsr = BSR_BANK2; 230 printf("MMUCR %04x PNR %02x ARR %02x FIFO %04x PTR %04x", 231 SWAP(smc->b2.mmucr), smc->b2.pnr, smc->b2.arr, smc->b2.fifo, 232 SWAP(smc->b2.ptr)); 233 printf(" DATA %04x %04x IST %02x MSK %02x\n", smc->b2.data, 234 smc->b2.datax, smc->b2.ist, smc->b2.msk); 235 smc->b3.bsr = BSR_BANK3; 236 printf("MT %04x %04x %04x %04x\n", 237 smc->b3.mt[0], smc->b3.mt[1], smc->b3.mt[2], smc->b3.mt[3]); 238 smc->b3.bsr = cur_bank; 239 } 240 #endif 241 242 void 243 esstop(sc) 244 struct es_softc* sc; 245 { 246 } 247 248 void 249 esinit(sc) 250 struct es_softc *sc; 251 { 252 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 253 union smcregs *smc = sc->sc_base; 254 int s; 255 256 s = splnet(); 257 258 #ifdef ESDEBUG 259 if (ifp->if_flags & IFF_RUNNING) 260 es_dump_smcregs("esinit", smc); 261 #endif 262 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 263 smc->b0.rcr = RCR_EPH_RST; 264 smc->b0.rcr = 0; 265 smc->b3.bsr = BSR_BANK3; /* Select bank 3 */ 266 smc->b3.mt[0] = 0; /* clear Multicast table */ 267 smc->b3.mt[1] = 0; 268 smc->b3.mt[2] = 0; 269 smc->b3.mt[3] = 0; 270 /* XXX set Multicast table from Multicast list */ 271 smc->b1.bsr = BSR_BANK1; /* Select bank 1 */ 272 smc->b1.cr = CR_RAM32K | CR_NO_WAIT_ST | CR_SET_SQLCH; 273 smc->b1.ctr = CTR_AUTO_RLSE; 274 smc->b1.iar[0] = *((unsigned short *) &LLADDR(ifp->if_sadl)[0]); 275 smc->b1.iar[1] = *((unsigned short *) &LLADDR(ifp->if_sadl)[2]); 276 smc->b1.iar[2] = *((unsigned short *) &LLADDR(ifp->if_sadl)[4]); 277 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 278 smc->b2.mmucr = MMUCR_RESET; 279 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 280 smc->b0.mcr = SWAP(0x0020); /* reserve 8K for transmit buffers */ 281 smc->b0.tcr = TCR_PAD_EN | (TCR_TXENA + TCR_MON_CSN); 282 smc->b0.rcr = RCR_FILT_CAR | RCR_STRIP_CRC | RCR_RXEN | RCR_ALLMUL; 283 /* XXX add promiscuous flags */ 284 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 285 smc->b2.msk = sc->sc_intctl = MSK_RX_OVRN | MSK_RX; 286 287 /* Interface is now 'running', with no output active. */ 288 ifp->if_flags |= IFF_RUNNING; 289 ifp->if_flags &= ~IFF_OACTIVE; 290 291 /* Attempt to start output, if any. */ 292 esstart(ifp); 293 294 splx(s); 295 } 296 297 int 298 esintr(arg) 299 void *arg; 300 { 301 struct es_softc *sc = arg; 302 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 303 u_short intsts, intact; 304 union smcregs *smc; 305 int s = splnet(); 306 307 smc = sc->sc_base; 308 #ifdef ESDEBUG 309 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2 && 310 ifp->if_flags & IFF_RUNNING) { 311 printf("%s: intr BSR not 2: %04x\n", sc->sc_dev.dv_xname, 312 smc->b2.bsr); 313 smc->b2.bsr = BSR_BANK2; 314 } 315 #endif 316 intsts = smc->b2.ist; 317 intact = smc->b2.msk & intsts; 318 if ((intact) == 0) { 319 splx(s); 320 return (0); 321 } 322 #ifdef ESDEBUG 323 if (esdebug) 324 printf ("%s: esintr ist %02x msk %02x", 325 sc->sc_dev.dv_xname, intsts, smc->b2.msk); 326 if (sc->sc_intbusy++) { 327 printf("%s: esintr re-entered\n", sc->sc_dev.dv_xname); 328 panic("esintr re-entered"); 329 } 330 if (sc->sc_smcbusy) 331 printf("%s: esintr interrupted busy %d\n", sc->sc_dev.dv_xname, 332 sc->sc_smcbusy); 333 #endif 334 smc->b2.msk = 0; 335 #ifdef ESDEBUG 336 if (esdebug) 337 printf ("=>%02x%02x pnr %02x arr %02x fifo %04x\n", 338 smc->b2.ist, smc->b2.ist, smc->b2.pnr, smc->b2.arr, 339 smc->b2.fifo); 340 #endif 341 if (intact & IST_ALLOC) { 342 sc->sc_intctl &= ~MSK_ALLOC; 343 #ifdef ESDEBUG 344 if (esdebug || 1) 345 printf ("%s: ist %02x", sc->sc_dev.dv_xname, 346 intsts); 347 #endif 348 if ((smc->b2.arr & ARR_FAILED) == 0) { 349 u_char save_pnr; 350 #ifdef ESDEBUG 351 if (esdebug || 1) 352 printf (" arr %02x\n", smc->b2.arr); 353 #endif 354 save_pnr = smc->b2.pnr; 355 smc->b2.pnr = smc->b2.arr; 356 smc->b2.mmucr = MMUCR_RLSPKT; 357 while (smc->b2.mmucr & MMUCR_BUSY) 358 ; 359 smc->b2.pnr = save_pnr; 360 ifp->if_flags &= ~IFF_OACTIVE; 361 } 362 #ifdef ESDEBUG 363 else if (esdebug || 1) 364 printf (" IST_ALLOC with ARR_FAILED?\n"); 365 #endif 366 } 367 #ifdef ESDEBUG 368 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 369 printf("%s: intr+ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 370 smc->b2.bsr); 371 smc->b2.bsr = BSR_BANK2; 372 } 373 #endif 374 while ((smc->b2.fifo & FIFO_REMPTY) == 0) { 375 esrint(sc); 376 } 377 #ifdef ESDEBUG 378 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 379 printf("%s: intr++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 380 smc->b2.bsr); 381 smc->b2.bsr = BSR_BANK2; 382 } 383 #endif 384 if (intact & IST_RX_OVRN) { 385 printf ("%s: Overrun ist %02x", sc->sc_dev.dv_xname, 386 intsts); 387 smc->b2.ist = ACK_RX_OVRN; 388 printf ("->%02x\n", smc->b2.ist); 389 ifp->if_ierrors++; 390 } 391 if (intact & IST_TX_EMPTY) { 392 u_short ecr; 393 #ifdef ESDEBUG 394 if (esdebug) 395 printf ("%s: TX EMPTY %02x", 396 sc->sc_dev.dv_xname, intsts); 397 ++estxint5; /* count # IST_TX_EMPTY ints */ 398 #endif 399 smc->b2.ist = ACK_TX_EMPTY; 400 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 401 #ifdef ESDEBUG 402 if (esdebug) 403 printf ("->%02x intcl %x pnr %02x arr %02x\n", 404 smc->b2.ist, sc->sc_intctl, smc->b2.pnr, 405 smc->b2.arr); 406 #endif 407 if (smc->b2.ist & IST_TX) { 408 intact |= IST_TX; 409 #ifdef ESDEBUG 410 ++estxint2; /* count # TX after TX_EMPTY */ 411 #endif 412 } else { 413 smc->b0.bsr = BSR_BANK0; 414 ecr = smc->b0.ecr; /* Get error counters */ 415 if (ecr & 0xff00) 416 ifp->if_collisions += ((ecr >> 8) & 15) + 417 ((ecr >> 11) & 0x1e); 418 smc->b2.bsr = BSR_BANK2; 419 #if 0 420 smc->b2.mmucr = MMUCR_RESET_TX; /* XXX reset TX FIFO */ 421 #endif 422 } 423 } 424 if (intact & IST_TX) { 425 u_char tx_pnr, save_pnr; 426 u_short save_ptr, ephsr, tcr; 427 int n = 0; 428 #ifdef ESDEBUG 429 if (esdebug) { 430 printf ("%s: TX INT ist %02x", 431 sc->sc_dev.dv_xname, intsts); 432 printf ("->%02x\n", smc->b2.ist); 433 } 434 ++estxint3; /* count # IST_TX */ 435 #endif 436 zzzz: 437 #ifdef ESDEBUG 438 ++estxint4; /* count # ~TEMPTY */ 439 #endif 440 smc->b0.bsr = BSR_BANK0; 441 ephsr = smc->b0.ephsr; /* get EPHSR */ 442 tcr = smc->b0.tcr; /* and TCR */ 443 smc->b2.bsr = BSR_BANK2; 444 save_ptr = smc->b2.ptr; 445 save_pnr = smc->b2.pnr; 446 tx_pnr = smc->b2.fifo >> 8; /* pktno from completion fifo */ 447 smc->b2.pnr = tx_pnr; /* set TX packet number */ 448 smc->b2.ptr = PTR_READ; /* point to status word */ 449 #if 0 /* XXXX */ 450 printf("%s: esintr TXINT IST %02x PNR %02x(%d)", 451 sc->sc_dev.dv_xname, smc->b2.ist, 452 tx_pnr, n); 453 printf(" Status %04x", smc->b2.data); 454 printf(" EPHSR %04x\n", ephsr); 455 #endif 456 if ((smc->b2.data & EPHSR_TX_SUC) == 0 && (tcr & TCR_TXENA) == 0) { 457 /* 458 * Transmitter was stopped for some error. Enqueue 459 * the packet again and restart the transmitter. 460 * May need some check to limit the number of retries. 461 */ 462 smc->b2.mmucr = MMUCR_ENQ_TX; 463 smc->b0.bsr = BSR_BANK0; 464 smc->b0.tcr |= TCR_TXENA; 465 smc->b2.bsr = BSR_BANK2; 466 ifp->if_oerrors++; 467 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 468 } else { 469 /* 470 * This shouldn't have happened: IST_TX indicates 471 * the TX completion FIFO is not empty, but the 472 * status for the packet on the completion FIFO 473 * shows that the transmit was sucessful. Since 474 * AutoRelease is being used, a sucessful transmit 475 * should not result in a packet on the completion 476 * FIFO. Also, that packet doesn't seem to want 477 * to be acknowledged. If this occurs, just reset 478 * the TX FIFOs. 479 */ 480 #if 1 481 if (smc->b2.ist & IST_TX_EMPTY) { 482 smc->b2.mmucr = MMUCR_RESET_TX; 483 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 484 } 485 #endif 486 #ifdef ESDEBUG 487 ++estxints; /* count IST_TX with TX enabled */ 488 #endif 489 } 490 smc->b2.pnr = save_pnr; 491 smc->b2.ptr = save_ptr; 492 smc->b2.ist = ACK_TX; 493 494 if ((smc->b2.fifo & FIFO_TEMPTY) == 0 && n++ < 32) { 495 #if 0 /* XXXX */ 496 printf("%s: multiple TX int(%2d) pnr %02x ist %02x fifo %04x", 497 sc->sc_dev.dv_xname, n, tx_pnr, smc->b2.ist, smc->b2.fifo); 498 smc->w2.istmsk = ACK_TX << 8; 499 printf(" %04x\n", smc->b2.fifo); 500 #endif 501 if (tx_pnr != (smc->b2.fifo >> 8)) 502 goto zzzz; 503 } 504 } 505 /* output packets */ 506 estint(sc); 507 #ifdef ESDEBUG 508 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 509 printf("%s: intr+++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 510 smc->b2.bsr); 511 smc->b2.bsr = BSR_BANK2; 512 } 513 #endif 514 smc->b2.msk = sc->sc_intctl; 515 #ifdef ESDEBUG 516 if (--sc->sc_intbusy) { 517 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 518 panic("esintr busy on exit"); 519 } 520 #endif 521 splx(s); 522 return (1); 523 } 524 525 void 526 esrint(sc) 527 struct es_softc *sc; 528 { 529 union smcregs *smc = sc->sc_base; 530 u_short len; 531 short cnt; 532 u_short pktctlw, pktlen, *buf; 533 volatile u_short *data; 534 #if 0 535 u_long *lbuf; 536 volatile u_long *ldata; 537 #endif 538 struct ifnet *ifp; 539 struct mbuf *top, **mp, *m; 540 #ifdef USEPKTBUF 541 u_char *b, pktbuf[1530]; 542 #endif 543 #ifdef ESDEBUG 544 int i; 545 #endif 546 547 ifp = &sc->sc_ethercom.ec_if; 548 #ifdef ESDEBUG 549 if (esdebug) 550 printf ("%s: esrint fifo %04x", sc->sc_dev.dv_xname, 551 smc->b2.fifo); 552 if (sc->sc_smcbusy++) { 553 printf("%s: esrint re-entered\n", sc->sc_dev.dv_xname); 554 panic("esrint re-entered"); 555 } 556 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 557 printf("%s: rint BSR not 2: %04x\n", sc->sc_dev.dv_xname, 558 smc->b2.bsr); 559 smc->b2.bsr = BSR_BANK2; 560 } 561 #endif 562 data = (u_short *)&smc->b2.data; 563 smc->b2.ptr = PTR_RCV | PTR_AUTOINCR | PTR_READ | SWAP(0x0002); 564 (void) smc->b2.mmucr; 565 #ifdef ESDEBUG 566 if (esdebug) 567 printf ("->%04x", smc->b2.fifo); 568 #endif 569 len = *data; 570 len = SWAP(len); /* Careful of macro side-effects */ 571 #ifdef ESDEBUG 572 if (esdebug) 573 printf (" length %d", len); 574 #endif 575 smc->b2.ptr = PTR_RCV | (PTR_AUTOINCR + PTR_READ) | SWAP(0x0000); 576 (void) smc->b2.mmucr; 577 pktctlw = *data; 578 pktlen = *data; 579 pktctlw = SWAP(pktctlw); 580 pktlen = SWAP(pktlen) - 6; 581 if (pktctlw & RFSW_ODDFRM) 582 pktlen++; 583 if (len > 1530) { 584 printf("%s: Corrupted packet length-sts %04x bytcnt %04x len %04x bank %04x\n", 585 sc->sc_dev.dv_xname, pktctlw, pktlen, len, smc->b2.bsr); 586 /* XXX ignore packet, or just truncate? */ 587 #if defined(ESDEBUG) && defined(DDB) 588 if ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) 589 Debugger(); 590 #endif 591 smc->b2.bsr = BSR_BANK2; 592 smc->b2.mmucr = MMUCR_REMRLS_RX; 593 while (smc->b2.mmucr & MMUCR_BUSY) 594 ; 595 ++ifp->if_ierrors; 596 #ifdef ESDEBUG 597 if (--sc->sc_smcbusy) { 598 printf("%s: esrintr busy on bad packet exit\n", 599 sc->sc_dev.dv_xname); 600 panic("esrintr busy on exit"); 601 } 602 #endif 603 return; 604 } 605 #ifdef USEPKTBUF 606 #if 0 607 lbuf = (u_long *) pktbuf; 608 ldata = (u_long *)data; 609 cnt = (len - 4) / 4; 610 while (cnt--) 611 *lbuf++ = *ldata; 612 if ((len - 4) & 2) { 613 buf = (u_short *) lbuf; 614 *buf = *data; 615 } 616 #else 617 buf = (u_short *)pktbuf; 618 cnt = (len - 4) / 2; 619 while (cnt--) 620 *buf++ = *data; 621 #endif 622 smc->b2.mmucr = MMUCR_REMRLS_RX; 623 while (smc->b2.mmucr & MMUCR_BUSY) 624 ; 625 #ifdef ESDEBUG 626 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 627 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 628 /* count input error? */ 629 } 630 if (esdebug) { 631 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 632 smc->b2.fifo); 633 for (i = 0; i < pktlen; ++i) 634 printf ("%02x%s", pktbuf[i], ((i & 31) == 31) ? "\n" : 635 ""); 636 if (i & 31) 637 printf ("\n"); 638 } 639 #endif 640 #else /* USEPKTBUF */ 641 /* XXX copy directly from controller to mbuf */ 642 #ifdef ESDEBUG 643 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 644 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 645 /* count input error? */ 646 } 647 if (esdebug) { 648 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 649 smc->b2.fifo); 650 } 651 #endif 652 #endif /* USEPKTBUF */ 653 ifp->if_ipackets++; 654 MGETHDR(m, M_DONTWAIT, MT_DATA); 655 if (m == NULL) 656 return; 657 m->m_pkthdr.rcvif = ifp; 658 m->m_pkthdr.len = pktlen; 659 len = MHLEN; 660 top = NULL; 661 mp = ⊤ 662 #ifdef USEPKTBUF 663 b = pktbuf; 664 #endif 665 while (pktlen > 0) { 666 if (top) { 667 MGET(m, M_DONTWAIT, MT_DATA); 668 if (m == 0) { 669 m_freem(top); 670 return; 671 } 672 len = MLEN; 673 } 674 if (pktlen >= MINCLSIZE) { 675 MCLGET(m, M_DONTWAIT); 676 if (m->m_flags & M_EXT) 677 len = MCLBYTES; 678 } 679 m->m_len = len = min(pktlen, len); 680 #ifdef USEPKTBUF 681 bcopy((caddr_t)b, mtod(m, caddr_t), len); 682 b += len; 683 #else /* USEPKTBUF */ 684 buf = mtod(m, u_short *); 685 cnt = len / 2; 686 while (cnt--) 687 *buf++ = *data; 688 if (len & 1) 689 *buf = *data; /* XXX should be byte store */ 690 #ifdef ESDEBUG 691 if (esdebug) { 692 buf = mtod(m, u_short *); 693 for (i = 0; i < len; ++i) 694 printf ("%02x%s", ((u_char *)buf)[i], 695 ((i & 31) == 31) ? "\n" : ""); 696 if (i & 31) 697 printf ("\n"); 698 } 699 #endif 700 #endif /* USEPKTBUF */ 701 pktlen -= len; 702 *mp = m; 703 mp = &m->m_next; 704 } 705 #ifndef USEPKTBUF 706 smc->b2.mmucr = MMUCR_REMRLS_RX; 707 while (smc->b2.mmucr & MMUCR_BUSY) 708 ; 709 #endif 710 #if NBPFILTER > 0 711 /* 712 * Check if there's a BPF listener on this interface. If so, hand off 713 * the raw packet to bpf. 714 */ 715 if (ifp->if_bpf) 716 bpf_mtap(ifp->if_bpf, top); 717 #endif 718 (*ifp->if_input)(ifp, top); 719 #ifdef ESDEBUG 720 if (--sc->sc_smcbusy) { 721 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 722 panic("esintr busy on exit"); 723 } 724 #endif 725 } 726 727 void 728 estint(sc) 729 struct es_softc *sc; 730 { 731 732 esstart(&sc->sc_ethercom.ec_if); 733 } 734 735 void 736 esstart(ifp) 737 struct ifnet *ifp; 738 { 739 struct es_softc *sc = ifp->if_softc; 740 union smcregs *smc = sc->sc_base; 741 struct mbuf *m0, *m; 742 #ifdef USEPKTBUF 743 u_short pktbuf[ETHERMTU + 2]; 744 #else 745 u_short oddbyte, needbyte; 746 #endif 747 u_short pktctlw, pktlen; 748 u_short *buf; 749 volatile u_short *data; 750 #if 0 751 u_long *lbuf; 752 volatile u_long *ldata; 753 #endif 754 short cnt; 755 int i; 756 u_char active_pnr; 757 758 if ((sc->sc_ethercom.ec_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) != 759 IFF_RUNNING) 760 return; 761 762 #ifdef ESDEBUG 763 if (sc->sc_smcbusy++) { 764 printf("%s: esstart re-entered\n", sc->sc_dev.dv_xname); 765 panic("esstart re-entred"); 766 } 767 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 768 printf("%s: esstart BSR not 2: %04x\n", sc->sc_dev.dv_xname, 769 smc->b2.bsr); 770 smc->b2.bsr = BSR_BANK2; 771 } 772 #endif 773 for (;;) { 774 #ifdef ESDEBUG 775 u_short start_ptr, end_ptr; 776 #endif 777 /* 778 * Sneak a peek at the next packet to get the length 779 * and see if the SMC 91C90 can accept it. 780 */ 781 m = sc->sc_ethercom.ec_if.if_snd.ifq_head; 782 if (!m) 783 break; 784 #ifdef ESDEBUG 785 if (esdebug && (m->m_next || m->m_len & 1)) 786 printf("%s: esstart m_next %p m_len %d\n", 787 sc->sc_dev.dv_xname, m->m_next, m->m_len); 788 #endif 789 for (m0 = m, pktlen = 0; m0; m0 = m0->m_next) 790 pktlen += m0->m_len; 791 pktctlw = 0; 792 pktlen += 4; 793 if (pktlen & 1) 794 ++pktlen; /* control byte after last byte */ 795 else 796 pktlen += 2; /* control byte after pad byte */ 797 smc->b2.mmucr = MMUCR_ALLOC | (pktlen & 0x0700); 798 for (i = 0; i <= 5; ++i) 799 if ((smc->b2.arr & ARR_FAILED) == 0) 800 break; 801 if (smc->b2.arr & ARR_FAILED) { 802 sc->sc_ethercom.ec_if.if_flags |= IFF_OACTIVE; 803 sc->sc_intctl |= MSK_ALLOC; 804 break; 805 } 806 active_pnr = smc->b2.pnr = smc->b2.arr; 807 808 #ifdef ESDEBUG 809 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 810 printf("%s: esstart+ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 811 smc->b2.bsr); 812 smc->b2.bsr = BSR_BANK2; 813 } 814 #endif 815 IF_DEQUEUE(&sc->sc_ethercom.ec_if.if_snd, m); 816 smc->b2.ptr = PTR_AUTOINCR; 817 (void) smc->b2.mmucr; 818 data = (u_short *)&smc->b2.data; 819 *data = SWAP(pktctlw); 820 *data = SWAP(pktlen); 821 #ifdef ESDEBUG 822 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 823 printf("%s: esstart++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 824 smc->b2.bsr); 825 smc->b2.bsr = BSR_BANK2; 826 } 827 #endif 828 #ifdef USEPKTBUF 829 i = 0; 830 for (m0 = m; m; m = m->m_next) { 831 bcopy(mtod(m, caddr_t), (char *)pktbuf + i, m->m_len); 832 i += m->m_len; 833 } 834 835 if (i & 1) /* Figure out where to put control byte */ 836 pktbuf[i/2] = (pktbuf[i/2] & 0xff00) | CTLB_ODD; 837 else 838 pktbuf[i/2] = 0; 839 pktlen -= 4; 840 #ifdef ESDEBUG 841 if (pktlen > sizeof(pktbuf) && i > (sizeof(pktbuf) * 2)) 842 printf("%s: esstart packet longer than pktbuf\n", 843 sc->sc_dev.dv_xname); 844 #endif 845 #if 0 /* doesn't quite work? */ 846 lbuf = (u_long *)(pktbuf); 847 ldata = (u_long *)data; 848 cnt = pktlen / 4; 849 while(cnt--) 850 *ldata = *lbuf++; 851 if (pktlen & 2) { 852 buf = (u_short *)lbuf; 853 *data = *buf; 854 } 855 #else 856 #ifdef ESDEBUG 857 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 858 printf("%s: esstart++2 BSR not 2: %04x\n", sc->sc_dev.dv_xname, 859 smc->b2.bsr); 860 smc->b2.bsr = BSR_BANK2; 861 } 862 start_ptr = SWAP(smc->b2.ptr); /* save PTR before copy */ 863 #endif 864 buf = pktbuf; 865 cnt = pktlen / 2; 866 while (cnt--) 867 *data = *buf++; 868 #ifdef ESDEBUG 869 end_ptr = SWAP(smc->b2.ptr); /* save PTR after copy */ 870 #endif 871 #endif 872 #else /* USEPKTBUF */ 873 pktctlw = 0; 874 oddbyte = needbyte = 0; 875 for (m0 = m; m; m = m->m_next) { 876 buf = mtod(m, u_short *); 877 cnt = m->m_len / 2; 878 if (needbyte) { 879 oddbyte |= *buf >> 8; 880 *data = oddbyte; 881 } 882 while (cnt--) 883 *data = *buf++; 884 if (m->m_len & 1) 885 pktctlw = (*buf & 0xff00) | CTLB_ODD; 886 if (m->m_len & 1 && m->m_next) 887 printf("%s: esstart odd byte count in mbuf\n", 888 sc->sc_dev.dv_xname); 889 } 890 *data = pktctlw; 891 #endif /* USEPKTBUF */ 892 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 893 /* 894 * The bank select register has changed. This seems 895 * to happen with my A2000/Zeus once in a while. It 896 * appears that the Ethernet chip resets while 897 * copying the transmit buffer. Requeue the current 898 * transmit buffer and reinitialize the interface. 899 * The initialize routine will take care of 900 * retransmitting the buffer. mhitch 901 */ 902 #ifdef DIAGNOSTIC 903 printf("%s: esstart+++ BSR not 2: %04x\n", 904 sc->sc_dev.dv_xname, smc->b2.bsr); 905 #endif 906 smc->b2.bsr = BSR_BANK2; 907 #ifdef ESDEBUG 908 printf("start_ptr %04x end_ptr %04x cur ptr %04x\n", 909 start_ptr, end_ptr, SWAP(smc->b2.ptr)); 910 --sc->sc_smcbusy; 911 #endif 912 IF_PREPEND(&sc->sc_ethercom.ec_if.if_snd, m0); 913 esinit(sc); /* It's really hosed - reset */ 914 return; 915 } 916 smc->b2.mmucr = MMUCR_ENQ_TX; 917 if (smc->b2.pnr != active_pnr) 918 printf("%s: esstart - PNR changed %x->%x\n", 919 sc->sc_dev.dv_xname, active_pnr, smc->b2.pnr); 920 #if NBPFILTER > 0 921 if (sc->sc_ethercom.ec_if.if_bpf) 922 bpf_mtap(sc->sc_ethercom.ec_if.if_bpf, m0); 923 #endif 924 m_freem(m0); 925 sc->sc_ethercom.ec_if.if_opackets++; /* move to interrupt? */ 926 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 927 } 928 smc->b2.msk = sc->sc_intctl; 929 #ifdef ESDEBUG 930 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 931 printf("%s: esstart++++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 932 smc->b2.bsr); 933 smc->b2.bsr = BSR_BANK2; 934 } 935 if (--sc->sc_smcbusy) { 936 printf("%s: esstart busy on exit\n", sc->sc_dev.dv_xname); 937 panic("esstart busy on exit"); 938 } 939 #endif 940 } 941 942 int 943 esioctl(ifp, command, data) 944 register struct ifnet *ifp; 945 u_long command; 946 caddr_t data; 947 { 948 struct es_softc *sc = ifp->if_softc; 949 register struct ifaddr *ifa = (struct ifaddr *)data; 950 struct ifreq *ifr = (struct ifreq *)data; 951 int s, error = 0; 952 953 s = splnet(); 954 955 switch (command) { 956 957 case SIOCSIFADDR: 958 ifp->if_flags |= IFF_UP; 959 960 switch (ifa->ifa_addr->sa_family) { 961 #ifdef INET 962 case AF_INET: 963 esinit(sc); 964 arp_ifinit(ifp, ifa); 965 break; 966 #endif 967 #ifdef NS 968 case AF_NS: 969 { 970 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 971 972 if (ns_nullhost(*ina)) 973 ina->x_host = 974 *(union ns_host *)LLADDR(ifp->if_sadl); 975 else 976 bcopy(ina->x_host.c_host, 977 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 978 /* Set new address. */ 979 esinit(sc); 980 break; 981 } 982 #endif 983 default: 984 esinit(sc); 985 break; 986 } 987 break; 988 989 case SIOCSIFFLAGS: 990 /* 991 * If interface is marked down and it is running, then stop it 992 */ 993 if ((ifp->if_flags & IFF_UP) == 0 && 994 (ifp->if_flags & IFF_RUNNING) != 0) { 995 /* 996 * If interface is marked down and it is running, then 997 * stop it. 998 */ 999 esstop(sc); 1000 ifp->if_flags &= ~IFF_RUNNING; 1001 } else if ((ifp->if_flags & IFF_UP) != 0 && 1002 (ifp->if_flags & IFF_RUNNING) == 0) { 1003 /* 1004 * If interface is marked up and it is stopped, then 1005 * start it. 1006 */ 1007 esinit(sc); 1008 } else { 1009 /* 1010 * Reset the interface to pick up changes in any other 1011 * flags that affect hardware registers. 1012 */ 1013 esstop(sc); 1014 esinit(sc); 1015 } 1016 #ifdef ESDEBUG 1017 if (ifp->if_flags & IFF_DEBUG) 1018 esdebug = sc->sc_debug = 1; 1019 else 1020 esdebug = sc->sc_debug = 0; 1021 #endif 1022 break; 1023 1024 case SIOCADDMULTI: 1025 case SIOCDELMULTI: 1026 error = (command == SIOCADDMULTI) ? 1027 ether_addmulti(ifr, &sc->sc_ethercom) : 1028 ether_delmulti(ifr, &sc->sc_ethercom); 1029 1030 if (error == ENETRESET) { 1031 /* 1032 * Multicast list has changed; set the hardware filter 1033 * accordingly. 1034 */ 1035 /* XXX */ 1036 error = 0; 1037 } 1038 break; 1039 1040 default: 1041 error = EINVAL; 1042 } 1043 1044 splx(s); 1045 return (error); 1046 } 1047 1048 void 1049 esreset(sc) 1050 struct es_softc *sc; 1051 { 1052 int s; 1053 1054 s = splnet(); 1055 esstop(sc); 1056 esinit(sc); 1057 splx(s); 1058 } 1059 1060 void 1061 eswatchdog(ifp) 1062 struct ifnet *ifp; 1063 { 1064 struct es_softc *sc = ifp->if_softc; 1065 1066 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 1067 ++ifp->if_oerrors; 1068 1069 esreset(sc); 1070 } 1071
Indexes created Tue Sep 30 11:09:46 GMT 2025