if_es.c revision 1.24
1 /* $NetBSD: if_es.c,v 1.24 1999/12/10 05:44:58 mhitch 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 struct ether_header *eh; 541 #ifdef USEPKTBUF 542 u_char *b, pktbuf[1530]; 543 #endif 544 #ifdef ESDEBUG 545 int i; 546 #endif 547 548 ifp = &sc->sc_ethercom.ec_if; 549 #ifdef ESDEBUG 550 if (esdebug) 551 printf ("%s: esrint fifo %04x", sc->sc_dev.dv_xname, 552 smc->b2.fifo); 553 if (sc->sc_smcbusy++) { 554 printf("%s: esrint re-entered\n", sc->sc_dev.dv_xname); 555 panic("esrint re-entered"); 556 } 557 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 558 printf("%s: rint BSR not 2: %04x\n", sc->sc_dev.dv_xname, 559 smc->b2.bsr); 560 smc->b2.bsr = BSR_BANK2; 561 } 562 #endif 563 data = (u_short *)&smc->b2.data; 564 smc->b2.ptr = PTR_RCV | PTR_AUTOINCR | PTR_READ | SWAP(0x0002); 565 (void) smc->b2.mmucr; 566 #ifdef ESDEBUG 567 if (esdebug) 568 printf ("->%04x", smc->b2.fifo); 569 #endif 570 len = *data; 571 len = SWAP(len); /* Careful of macro side-effects */ 572 #ifdef ESDEBUG 573 if (esdebug) 574 printf (" length %d", len); 575 #endif 576 smc->b2.ptr = PTR_RCV | (PTR_AUTOINCR + PTR_READ) | SWAP(0x0000); 577 (void) smc->b2.mmucr; 578 pktctlw = *data; 579 pktlen = *data; 580 pktctlw = SWAP(pktctlw); 581 pktlen = SWAP(pktlen) - 6; 582 if (pktctlw & RFSW_ODDFRM) 583 pktlen++; 584 if (len > 1530) { 585 printf("%s: Corrupted packet length-sts %04x bytcnt %04x len %04x bank %04x\n", 586 sc->sc_dev.dv_xname, pktctlw, pktlen, len, smc->b2.bsr); 587 /* XXX ignore packet, or just truncate? */ 588 #if defined(ESDEBUG) && defined(DDB) 589 if ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) 590 Debugger(); 591 #endif 592 smc->b2.bsr = BSR_BANK2; 593 smc->b2.mmucr = MMUCR_REMRLS_RX; 594 while (smc->b2.mmucr & MMUCR_BUSY) 595 ; 596 ++ifp->if_ierrors; 597 #ifdef ESDEBUG 598 if (--sc->sc_smcbusy) { 599 printf("%s: esrintr busy on bad packet exit\n", 600 sc->sc_dev.dv_xname); 601 panic("esrintr busy on exit"); 602 } 603 #endif 604 return; 605 } 606 #ifdef USEPKTBUF 607 #if 0 608 lbuf = (u_long *) pktbuf; 609 ldata = (u_long *)data; 610 cnt = (len - 4) / 4; 611 while (cnt--) 612 *lbuf++ = *ldata; 613 if ((len - 4) & 2) { 614 buf = (u_short *) lbuf; 615 *buf = *data; 616 } 617 #else 618 buf = (u_short *)pktbuf; 619 cnt = (len - 4) / 2; 620 while (cnt--) 621 *buf++ = *data; 622 #endif 623 smc->b2.mmucr = MMUCR_REMRLS_RX; 624 while (smc->b2.mmucr & MMUCR_BUSY) 625 ; 626 #ifdef ESDEBUG 627 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 628 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 629 /* count input error? */ 630 } 631 if (esdebug) { 632 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 633 smc->b2.fifo); 634 for (i = 0; i < pktlen; ++i) 635 printf ("%02x%s", pktbuf[i], ((i & 31) == 31) ? "\n" : 636 ""); 637 if (i & 31) 638 printf ("\n"); 639 } 640 #endif 641 #else /* USEPKTBUF */ 642 /* XXX copy directly from controller to mbuf */ 643 #ifdef ESDEBUG 644 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 645 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 646 /* count input error? */ 647 } 648 if (esdebug) { 649 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 650 smc->b2.fifo); 651 } 652 #endif 653 #endif /* USEPKTBUF */ 654 ifp->if_ipackets++; 655 MGETHDR(m, M_DONTWAIT, MT_DATA); 656 if (m == NULL) 657 return; 658 m->m_pkthdr.rcvif = ifp; 659 m->m_pkthdr.len = pktlen; 660 len = MHLEN; 661 top = NULL; 662 mp = ⊤ 663 #ifdef USEPKTBUF 664 b = pktbuf; 665 #endif 666 while (pktlen > 0) { 667 if (top) { 668 MGET(m, M_DONTWAIT, MT_DATA); 669 if (m == 0) { 670 m_freem(top); 671 return; 672 } 673 len = MLEN; 674 } 675 if (pktlen >= MINCLSIZE) { 676 MCLGET(m, M_DONTWAIT); 677 if (m->m_flags & M_EXT) 678 len = MCLBYTES; 679 } 680 m->m_len = len = min(pktlen, len); 681 #ifdef USEPKTBUF 682 bcopy((caddr_t)b, mtod(m, caddr_t), len); 683 b += len; 684 #else /* USEPKTBUF */ 685 buf = mtod(m, u_short *); 686 cnt = len / 2; 687 while (cnt--) 688 *buf++ = *data; 689 if (len & 1) 690 *buf = *data; /* XXX should be byte store */ 691 #ifdef ESDEBUG 692 if (esdebug) { 693 buf = mtod(m, u_short *); 694 for (i = 0; i < len; ++i) 695 printf ("%02x%s", ((u_char *)buf)[i], 696 ((i & 31) == 31) ? "\n" : ""); 697 if (i & 31) 698 printf ("\n"); 699 } 700 #endif 701 #endif /* USEPKTBUF */ 702 pktlen -= len; 703 *mp = m; 704 mp = &m->m_next; 705 } 706 #ifndef USEPKTBUF 707 smc->b2.mmucr = MMUCR_REMRLS_RX; 708 while (smc->b2.mmucr & MMUCR_BUSY) 709 ; 710 #endif 711 eh = mtod(top, struct ether_header *); 712 #if NBPFILTER > 0 713 /* 714 * Check if there's a BPF listener on this interface. If so, hand off 715 * the raw packet to bpf. 716 */ 717 if (ifp->if_bpf) { 718 bpf_mtap(ifp->if_bpf, top); 719 720 /* 721 * Note that the interface cannot be in promiscuous mode if 722 * there are no BPF listeners. And if we are in promiscuous 723 * mode, we have to check if this packet is really ours. 724 */ 725 if ((sc->sc_ethercom.ec_if.if_flags & IFF_PROMISC) && 726 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ 727 bcmp(eh->ether_dhost, LLADDR(ifp->if_sadl), 728 sizeof(eh->ether_dhost)) != 0) { 729 m_freem(top); 730 return; 731 } 732 } 733 #endif 734 (*ifp->if_input)(ifp, top); 735 #ifdef ESDEBUG 736 if (--sc->sc_smcbusy) { 737 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 738 panic("esintr busy on exit"); 739 } 740 #endif 741 } 742 743 void 744 estint(sc) 745 struct es_softc *sc; 746 { 747 748 esstart(&sc->sc_ethercom.ec_if); 749 } 750 751 void 752 esstart(ifp) 753 struct ifnet *ifp; 754 { 755 struct es_softc *sc = ifp->if_softc; 756 union smcregs *smc = sc->sc_base; 757 struct mbuf *m0, *m; 758 #ifdef USEPKTBUF 759 u_short pktbuf[ETHERMTU + 2]; 760 #else 761 u_short oddbyte, needbyte; 762 #endif 763 u_short pktctlw, pktlen; 764 u_short *buf; 765 volatile u_short *data; 766 #if 0 767 u_long *lbuf; 768 volatile u_long *ldata; 769 #endif 770 short cnt; 771 int i; 772 u_char active_pnr; 773 774 if ((sc->sc_ethercom.ec_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) != 775 IFF_RUNNING) 776 return; 777 778 #ifdef ESDEBUG 779 if (sc->sc_smcbusy++) { 780 printf("%s: esstart re-entered\n", sc->sc_dev.dv_xname); 781 panic("esstart re-entred"); 782 } 783 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 784 printf("%s: esstart BSR not 2: %04x\n", sc->sc_dev.dv_xname, 785 smc->b2.bsr); 786 smc->b2.bsr = BSR_BANK2; 787 } 788 #endif 789 for (;;) { 790 #ifdef ESDEBUG 791 u_short start_ptr, end_ptr; 792 #endif 793 /* 794 * Sneak a peek at the next packet to get the length 795 * and see if the SMC 91C90 can accept it. 796 */ 797 m = sc->sc_ethercom.ec_if.if_snd.ifq_head; 798 if (!m) 799 break; 800 #ifdef ESDEBUG 801 if (esdebug && (m->m_next || m->m_len & 1)) 802 printf("%s: esstart m_next %p m_len %d\n", 803 sc->sc_dev.dv_xname, m->m_next, m->m_len); 804 #endif 805 for (m0 = m, pktlen = 0; m0; m0 = m0->m_next) 806 pktlen += m0->m_len; 807 pktctlw = 0; 808 pktlen += 4; 809 if (pktlen & 1) 810 ++pktlen; /* control byte after last byte */ 811 else 812 pktlen += 2; /* control byte after pad byte */ 813 smc->b2.mmucr = MMUCR_ALLOC | (pktlen & 0x0700); 814 for (i = 0; i <= 5; ++i) 815 if ((smc->b2.arr & ARR_FAILED) == 0) 816 break; 817 if (smc->b2.arr & ARR_FAILED) { 818 sc->sc_ethercom.ec_if.if_flags |= IFF_OACTIVE; 819 sc->sc_intctl |= MSK_ALLOC; 820 break; 821 } 822 active_pnr = smc->b2.pnr = smc->b2.arr; 823 824 #ifdef ESDEBUG 825 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 826 printf("%s: esstart+ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 827 smc->b2.bsr); 828 smc->b2.bsr = BSR_BANK2; 829 } 830 #endif 831 IF_DEQUEUE(&sc->sc_ethercom.ec_if.if_snd, m); 832 smc->b2.ptr = PTR_AUTOINCR; 833 (void) smc->b2.mmucr; 834 data = (u_short *)&smc->b2.data; 835 *data = SWAP(pktctlw); 836 *data = SWAP(pktlen); 837 #ifdef ESDEBUG 838 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 839 printf("%s: esstart++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 840 smc->b2.bsr); 841 smc->b2.bsr = BSR_BANK2; 842 } 843 #endif 844 #ifdef USEPKTBUF 845 i = 0; 846 for (m0 = m; m; m = m->m_next) { 847 bcopy(mtod(m, caddr_t), (char *)pktbuf + i, m->m_len); 848 i += m->m_len; 849 } 850 851 if (i & 1) /* Figure out where to put control byte */ 852 pktbuf[i/2] = (pktbuf[i/2] & 0xff00) | CTLB_ODD; 853 else 854 pktbuf[i/2] = 0; 855 pktlen -= 4; 856 #ifdef ESDEBUG 857 if (pktlen > sizeof(pktbuf) && i > (sizeof(pktbuf) * 2)) 858 printf("%s: esstart packet longer than pktbuf\n", 859 sc->sc_dev.dv_xname); 860 #endif 861 #if 0 /* doesn't quite work? */ 862 lbuf = (u_long *)(pktbuf); 863 ldata = (u_long *)data; 864 cnt = pktlen / 4; 865 while(cnt--) 866 *ldata = *lbuf++; 867 if (pktlen & 2) { 868 buf = (u_short *)lbuf; 869 *data = *buf; 870 } 871 #else 872 #ifdef ESDEBUG 873 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 874 printf("%s: esstart++2 BSR not 2: %04x\n", sc->sc_dev.dv_xname, 875 smc->b2.bsr); 876 smc->b2.bsr = BSR_BANK2; 877 } 878 start_ptr = SWAP(smc->b2.ptr); /* save PTR before copy */ 879 #endif 880 buf = pktbuf; 881 cnt = pktlen / 2; 882 while (cnt--) 883 *data = *buf++; 884 #ifdef ESDEBUG 885 end_ptr = SWAP(smc->b2.ptr); /* save PTR after copy */ 886 #endif 887 #endif 888 #else /* USEPKTBUF */ 889 pktctlw = 0; 890 oddbyte = needbyte = 0; 891 for (m0 = m; m; m = m->m_next) { 892 buf = mtod(m, u_short *); 893 cnt = m->m_len / 2; 894 if (needbyte) { 895 oddbyte |= *buf >> 8; 896 *data = oddbyte; 897 } 898 while (cnt--) 899 *data = *buf++; 900 if (m->m_len & 1) 901 pktctlw = (*buf & 0xff00) | CTLB_ODD; 902 if (m->m_len & 1 && m->m_next) 903 printf("%s: esstart odd byte count in mbuf\n", 904 sc->sc_dev.dv_xname); 905 } 906 *data = pktctlw; 907 #endif /* USEPKTBUF */ 908 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 909 /* 910 * The bank select register has changed. This seems 911 * to happen with my A2000/Zeus once in a while. It 912 * appears that the Ethernet chip resets while 913 * copying the transmit buffer. Requeue the current 914 * transmit buffer and reinitialize the interface. 915 * The initialize routine will take care of 916 * retransmitting the buffer. mhitch 917 */ 918 #ifdef DIAGNOSTIC 919 printf("%s: esstart+++ BSR not 2: %04x\n", 920 sc->sc_dev.dv_xname, smc->b2.bsr); 921 #endif 922 smc->b2.bsr = BSR_BANK2; 923 #ifdef ESDEBUG 924 printf("start_ptr %04x end_ptr %04x cur ptr %04x\n", 925 start_ptr, end_ptr, SWAP(smc->b2.ptr)); 926 --sc->sc_smcbusy; 927 #endif 928 IF_PREPEND(&sc->sc_ethercom.ec_if.if_snd, m0); 929 esinit(sc); /* It's really hosed - reset */ 930 return; 931 } 932 smc->b2.mmucr = MMUCR_ENQ_TX; 933 if (smc->b2.pnr != active_pnr) 934 printf("%s: esstart - PNR changed %x->%x\n", 935 sc->sc_dev.dv_xname, active_pnr, smc->b2.pnr); 936 #if NBPFILTER > 0 937 if (sc->sc_ethercom.ec_if.if_bpf) 938 bpf_mtap(sc->sc_ethercom.ec_if.if_bpf, m0); 939 #endif 940 m_freem(m0); 941 sc->sc_ethercom.ec_if.if_opackets++; /* move to interrupt? */ 942 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 943 } 944 smc->b2.msk = sc->sc_intctl; 945 #ifdef ESDEBUG 946 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 947 printf("%s: esstart++++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 948 smc->b2.bsr); 949 smc->b2.bsr = BSR_BANK2; 950 } 951 if (--sc->sc_smcbusy) { 952 printf("%s: esstart busy on exit\n", sc->sc_dev.dv_xname); 953 panic("esstart busy on exit"); 954 } 955 #endif 956 } 957 958 int 959 esioctl(ifp, command, data) 960 register struct ifnet *ifp; 961 u_long command; 962 caddr_t data; 963 { 964 struct es_softc *sc = ifp->if_softc; 965 register struct ifaddr *ifa = (struct ifaddr *)data; 966 struct ifreq *ifr = (struct ifreq *)data; 967 int s, error = 0; 968 969 s = splnet(); 970 971 switch (command) { 972 973 case SIOCSIFADDR: 974 ifp->if_flags |= IFF_UP; 975 976 switch (ifa->ifa_addr->sa_family) { 977 #ifdef INET 978 case AF_INET: 979 esinit(sc); 980 arp_ifinit(ifp, ifa); 981 break; 982 #endif 983 #ifdef NS 984 case AF_NS: 985 { 986 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 987 988 if (ns_nullhost(*ina)) 989 ina->x_host = 990 *(union ns_host *)LLADDR(ifp->if_sadl); 991 else 992 bcopy(ina->x_host.c_host, 993 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 994 /* Set new address. */ 995 esinit(sc); 996 break; 997 } 998 #endif 999 default: 1000 esinit(sc); 1001 break; 1002 } 1003 break; 1004 1005 case SIOCSIFFLAGS: 1006 /* 1007 * If interface is marked down and it is running, then stop it 1008 */ 1009 if ((ifp->if_flags & IFF_UP) == 0 && 1010 (ifp->if_flags & IFF_RUNNING) != 0) { 1011 /* 1012 * If interface is marked down and it is running, then 1013 * stop it. 1014 */ 1015 esstop(sc); 1016 ifp->if_flags &= ~IFF_RUNNING; 1017 } else if ((ifp->if_flags & IFF_UP) != 0 && 1018 (ifp->if_flags & IFF_RUNNING) == 0) { 1019 /* 1020 * If interface is marked up and it is stopped, then 1021 * start it. 1022 */ 1023 esinit(sc); 1024 } else { 1025 /* 1026 * Reset the interface to pick up changes in any other 1027 * flags that affect hardware registers. 1028 */ 1029 esstop(sc); 1030 esinit(sc); 1031 } 1032 #ifdef ESDEBUG 1033 if (ifp->if_flags & IFF_DEBUG) 1034 esdebug = sc->sc_debug = 1; 1035 else 1036 esdebug = sc->sc_debug = 0; 1037 #endif 1038 break; 1039 1040 case SIOCADDMULTI: 1041 case SIOCDELMULTI: 1042 error = (command == SIOCADDMULTI) ? 1043 ether_addmulti(ifr, &sc->sc_ethercom) : 1044 ether_delmulti(ifr, &sc->sc_ethercom); 1045 1046 if (error == ENETRESET) { 1047 /* 1048 * Multicast list has changed; set the hardware filter 1049 * accordingly. 1050 */ 1051 /* XXX */ 1052 error = 0; 1053 } 1054 break; 1055 1056 default: 1057 error = EINVAL; 1058 } 1059 1060 splx(s); 1061 return (error); 1062 } 1063 1064 void 1065 esreset(sc) 1066 struct es_softc *sc; 1067 { 1068 int s; 1069 1070 s = splnet(); 1071 esstop(sc); 1072 esinit(sc); 1073 splx(s); 1074 } 1075 1076 void 1077 eswatchdog(ifp) 1078 struct ifnet *ifp; 1079 { 1080 struct es_softc *sc = ifp->if_softc; 1081 1082 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 1083 ++ifp->if_oerrors; 1084 1085 esreset(sc); 1086 } 1087
Indexes created Mon Sep 29 21:09:56 GMT 2025