if_es.c revision 1.16
1 /* $NetBSD: if_es.c,v 1.16 1996/12/23 09:10:17 veego 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 37 #include "bpfilter.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/mbuf.h> 42 #include <sys/buf.h> 43 #include <sys/protosw.h> 44 #include <sys/socket.h> 45 #include <sys/syslog.h> 46 #include <sys/ioctl.h> 47 #include <sys/errno.h> 48 #include <sys/device.h> 49 50 #include <net/if.h> 51 #include <net/netisr.h> 52 #include <net/route.h> 53 54 #ifdef INET 55 #include <netinet/in.h> 56 #include <netinet/in_systm.h> 57 #include <netinet/in_var.h> 58 #include <netinet/ip.h> 59 #include <netinet/if_ether.h> 60 #endif 61 62 #ifdef NS 63 #include <netns/ns.h> 64 #include <netns/ns_if.h> 65 #endif 66 67 #include <machine/cpu.h> 68 #include <machine/mtpr.h> 69 #include <amiga/amiga/device.h> 70 #include <amiga/amiga/isr.h> 71 #include <amiga/dev/zbusvar.h> 72 #include <amiga/dev/if_esreg.h> 73 74 #define SWAP(x) (((x & 0xff) << 8) | ((x >> 8) & 0xff)) 75 76 #define USEPKTBUF 77 78 /* 79 * Ethernet software status per interface. 80 * 81 * Each interface is referenced by a network interface structure, 82 * es_if, which the routing code uses to locate the interface. 83 * This structure contains the output queue for the interface, its address, ... 84 */ 85 struct es_softc { 86 struct device sc_dev; 87 struct isr sc_isr; 88 struct arpcom sc_arpcom; /* common Ethernet structures */ 89 void *sc_base; /* base address of board */ 90 short sc_iflags; 91 unsigned short sc_intctl; 92 #ifdef ESDEBUG 93 int sc_debug; 94 short sc_intbusy; /* counter for interrupt rentered */ 95 short sc_smcbusy; /* counter for other rentry checks */ 96 #endif 97 }; 98 99 #if NBPFILTER > 0 100 #include <net/bpf.h> 101 #include <net/bpfdesc.h> 102 #endif 103 104 #ifdef ESDEBUG 105 /* console error messages */ 106 int esdebug = 0; 107 int estxints = 0; /* IST_TX with TX enabled */ 108 int estxint2 = 0; /* IST_TX active after IST_TX_EMPTY */ 109 int estxint3 = 0; /* IST_TX interrupt processed */ 110 int estxint4 = 0; /* ~TEMPTY counts */ 111 int estxint5 = 0; /* IST_TX_EMPTY interrupts */ 112 void es_dump_smcregs __P((char *, union smcregs *)); 113 #endif 114 115 int esintr __P((void *)); 116 void esstart __P((struct ifnet *)); 117 void eswatchdog __P((struct ifnet *)); 118 int esioctl __P((struct ifnet *, u_long, caddr_t)); 119 void esrint __P((struct es_softc *)); 120 void estint __P((struct es_softc *)); 121 void esinit __P((struct es_softc *)); 122 void esreset __P((struct es_softc *)); 123 void esstop __P((struct es_softc *)); 124 125 int esmatch __P((struct device *, struct cfdata *, void *)); 126 void esattach __P((struct device *, struct device *, void *)); 127 128 struct cfattach es_ca = { 129 sizeof(struct es_softc), esmatch, esattach 130 }; 131 132 struct cfdriver es_cd = { 133 NULL, "es", DV_IFNET 134 }; 135 136 int 137 esmatch(parent, cfp, aux) 138 struct device *parent; 139 struct cfdata *cfp; 140 void *aux; 141 { 142 struct zbus_args *zap = aux; 143 144 /* Ameristar A4066 ethernet card */ 145 if (zap->manid == 1053 && zap->prodid == 10) 146 return(1); 147 148 return (0); 149 } 150 151 /* 152 * Interface exists: make available by filling in network interface 153 * record. System will initialize the interface when it is ready 154 * to accept packets. 155 */ 156 void 157 esattach(parent, self, aux) 158 struct device *parent, *self; 159 void *aux; 160 { 161 struct es_softc *sc = (void *)self; 162 struct zbus_args *zap = aux; 163 struct ifnet *ifp = &sc->sc_arpcom.ac_if; 164 unsigned long ser; 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 sc->sc_arpcom.ac_enaddr[0] = 0x00; 173 sc->sc_arpcom.ac_enaddr[1] = 0x00; 174 sc->sc_arpcom.ac_enaddr[2] = 0x9f; 175 176 /* 177 * Serial number for board contains last 3 bytes. 178 */ 179 ser = (unsigned long) zap->serno; 180 181 sc->sc_arpcom.ac_enaddr[3] = (ser >> 16) & 0xff; 182 sc->sc_arpcom.ac_enaddr[4] = (ser >> 8) & 0xff; 183 sc->sc_arpcom.ac_enaddr[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_output = ether_output; 189 ifp->if_ioctl = esioctl; 190 ifp->if_start = esstart; 191 ifp->if_watchdog = eswatchdog; 192 /* XXX IFF_MULTICAST */ 193 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 194 195 /* Attach the interface. */ 196 if_attach(ifp); 197 ether_ifattach(ifp); 198 199 /* Print additional info when attached. */ 200 printf(": address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr)); 201 202 #if NBPFILTER > 0 203 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 204 #endif 205 206 sc->sc_isr.isr_intr = esintr; 207 sc->sc_isr.isr_arg = sc; 208 sc->sc_isr.isr_ipl = 2; 209 add_isr(&sc->sc_isr); 210 } 211 212 #ifdef ESDEBUG 213 void 214 es_dump_smcregs(where, smc) 215 char *where; 216 union smcregs *smc; 217 { 218 u_short cur_bank = smc->b0.bsr & BSR_MASK; 219 220 printf("SMC registers %p from %s bank %04x\n", smc, where, 221 smc->b0.bsr); 222 smc->b0.bsr = BSR_BANK0; 223 printf("TCR %04x EPHSR %04x RCR %04x ECR %04x MIR %04x MCR %04x\n", 224 SWAP(smc->b0.tcr), SWAP(smc->b0.ephsr), SWAP(smc->b0.rcr), 225 SWAP(smc->b0.ecr), SWAP(smc->b0.mir), SWAP(smc->b0.mcr)); 226 smc->b1.bsr = BSR_BANK1; 227 printf("CR %04x BAR %04x IAR %04x %04x %04x GPR %04x CTR %04x\n", 228 SWAP(smc->b1.cr), SWAP(smc->b1.bar), smc->b1.iar[0], smc->b1.iar[1], 229 smc->b1.iar[2], smc->b1.gpr, SWAP(smc->b1.ctr)); 230 smc->b2.bsr = BSR_BANK2; 231 printf("MMUCR %04x PNR %02x ARR %02x FIFO %04x PTR %04x", 232 SWAP(smc->b2.mmucr), smc->b2.pnr, smc->b2.arr, smc->b2.fifo, 233 SWAP(smc->b2.ptr)); 234 printf(" DATA %04x %04x IST %02x MSK %02x\n", smc->b2.data, 235 smc->b2.datax, smc->b2.ist, smc->b2.msk); 236 smc->b3.bsr = BSR_BANK3; 237 printf("MT %04x %04x %04x %04x\n", 238 smc->b3.mt[0], smc->b3.mt[1], smc->b3.mt[2], smc->b3.mt[3]); 239 smc->b3.bsr = cur_bank; 240 } 241 #endif 242 243 void 244 esstop(sc) 245 struct es_softc* sc; 246 { 247 } 248 249 void 250 esinit(sc) 251 struct es_softc *sc; 252 { 253 struct ifnet *ifp = &sc->sc_arpcom.ac_if; 254 union smcregs *smc = sc->sc_base; 255 int s; 256 257 s = splnet(); 258 259 #ifdef ESDEBUG 260 if (ifp->if_flags & IFF_RUNNING) 261 es_dump_smcregs("esinit", smc); 262 #endif 263 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 264 smc->b0.rcr = RCR_EPH_RST; 265 smc->b0.rcr = 0; 266 smc->b3.bsr = BSR_BANK3; /* Select bank 3 */ 267 smc->b3.mt[0] = 0; /* clear Multicast table */ 268 smc->b3.mt[1] = 0; 269 smc->b3.mt[2] = 0; 270 smc->b3.mt[3] = 0; 271 /* XXX set Multicast table from Multicast list */ 272 smc->b1.bsr = BSR_BANK1; /* Select bank 1 */ 273 smc->b1.cr = CR_RAM32K | CR_NO_WAIT_ST | CR_SET_SQLCH; 274 smc->b1.ctr = CTR_AUTO_RLSE; 275 smc->b1.iar[0] = *((unsigned short *) &sc->sc_arpcom.ac_enaddr[0]); 276 smc->b1.iar[1] = *((unsigned short *) &sc->sc_arpcom.ac_enaddr[2]); 277 smc->b1.iar[2] = *((unsigned short *) &sc->sc_arpcom.ac_enaddr[4]); 278 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 279 smc->b2.mmucr = MMUCR_RESET; 280 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 281 smc->b0.mcr = SWAP(0x0020); /* reserve 8K for transmit buffers */ 282 smc->b0.tcr = TCR_PAD_EN | (TCR_TXENA + TCR_MON_CSN); 283 smc->b0.rcr = RCR_FILT_CAR | RCR_STRIP_CRC | RCR_RXEN; 284 /* XXX add multicast/promiscuous flags */ 285 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 286 smc->b2.msk = sc->sc_intctl = MSK_RX_OVRN | MSK_RX; 287 288 /* Interface is now 'running', with no output active. */ 289 ifp->if_flags |= IFF_RUNNING; 290 ifp->if_flags &= ~IFF_OACTIVE; 291 292 /* Attempt to start output, if any. */ 293 esstart(ifp); 294 295 splx(s); 296 } 297 298 int 299 esintr(arg) 300 void *arg; 301 { 302 struct es_softc *sc = arg; 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 sc->sc_arpcom.ac_if.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 sc->sc_arpcom.ac_if.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 sc->sc_arpcom.ac_if.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 sc->sc_arpcom.ac_if.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 sc->sc_arpcom.ac_if.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 #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 ++sc->sc_arpcom.ac_if.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 = &sc->sc_arpcom.ac_if; 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 (sc->sc_arpcom.ac_if.if_bpf) { 718 bpf_mtap(sc->sc_arpcom.ac_if.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_arpcom.ac_if.if_flags & IFF_PROMISC) && 726 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ 727 bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr, 728 sizeof(eh->ether_dhost)) != 0) { 729 m_freem(top); 730 return; 731 } 732 } 733 #endif 734 top->m_pkthdr.len -= sizeof (*eh); 735 top->m_len -= sizeof (*eh); 736 top->m_data += sizeof (*eh); 737 738 ether_input(ifp, eh, top); 739 #ifdef ESDEBUG 740 if (--sc->sc_smcbusy) { 741 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 742 panic("esintr busy on exit"); 743 } 744 #endif 745 } 746 747 void 748 estint(sc) 749 struct es_softc *sc; 750 { 751 752 esstart(&sc->sc_arpcom.ac_if); 753 } 754 755 void 756 esstart(ifp) 757 struct ifnet *ifp; 758 { 759 struct es_softc *sc = ifp->if_softc; 760 union smcregs *smc = sc->sc_base; 761 struct mbuf *m0, *m; 762 #ifdef USEPKTBUF 763 u_short pktbuf[ETHERMTU + 2]; 764 #else 765 u_short oddbyte, needbyte; 766 #endif 767 u_short pktctlw, pktlen; 768 u_short *buf; 769 volatile u_short *data; 770 #if 0 771 u_long *lbuf; 772 volatile u_long *ldata; 773 #endif 774 short cnt; 775 int i; 776 u_char active_pnr; 777 778 if ((sc->sc_arpcom.ac_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) != 779 IFF_RUNNING) 780 return; 781 782 #ifdef ESDEBUG 783 if (sc->sc_smcbusy++) { 784 printf("%s: esstart re-entered\n", sc->sc_dev.dv_xname); 785 panic("esstart re-entred"); 786 } 787 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 788 printf("%s: esstart BSR not 2: %04x\n", sc->sc_dev.dv_xname, 789 smc->b2.bsr); 790 smc->b2.bsr = BSR_BANK2; 791 } 792 #endif 793 for (;;) { 794 #ifdef ESDEBUG 795 u_short start_ptr, end_ptr; 796 #endif 797 /* 798 * Sneak a peek at the next packet to get the length 799 * and see if the SMC 91C90 can accept it. 800 */ 801 m = sc->sc_arpcom.ac_if.if_snd.ifq_head; 802 if (!m) 803 break; 804 #ifdef ESDEBUG 805 if (esdebug && (m->m_next || m->m_len & 1)) 806 printf("%s: esstart m_next %p m_len %d\n", 807 sc->sc_dev.dv_xname, m->m_next, m->m_len); 808 #endif 809 for (m0 = m, pktlen = 0; m0; m0 = m0->m_next) 810 pktlen += m0->m_len; 811 pktctlw = 0; 812 pktlen += 4; 813 if (pktlen & 1) 814 ++pktlen; /* control byte after last byte */ 815 else 816 pktlen += 2; /* control byte after pad byte */ 817 smc->b2.mmucr = MMUCR_ALLOC | (pktlen & 0x0700); 818 for (i = 0; i <= 5; ++i) 819 if ((smc->b2.arr & ARR_FAILED) == 0) 820 break; 821 if (smc->b2.arr & ARR_FAILED) { 822 sc->sc_arpcom.ac_if.if_flags |= IFF_OACTIVE; 823 sc->sc_intctl |= MSK_ALLOC; 824 break; 825 } 826 active_pnr = smc->b2.pnr = smc->b2.arr; 827 828 #ifdef ESDEBUG 829 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 830 printf("%s: esstart+ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 831 smc->b2.bsr); 832 smc->b2.bsr = BSR_BANK2; 833 } 834 #endif 835 IF_DEQUEUE(&sc->sc_arpcom.ac_if.if_snd, m); 836 smc->b2.ptr = PTR_AUTOINCR; 837 (void) smc->b2.mmucr; 838 data = (u_short *)&smc->b2.data; 839 *data = SWAP(pktctlw); 840 *data = SWAP(pktlen); 841 #ifdef ESDEBUG 842 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 843 printf("%s: esstart++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 844 smc->b2.bsr); 845 smc->b2.bsr = BSR_BANK2; 846 } 847 #endif 848 #ifdef USEPKTBUF 849 i = 0; 850 for (m0 = m; m; m = m->m_next) { 851 bcopy(mtod(m, caddr_t), (char *)pktbuf + i, m->m_len); 852 i += m->m_len; 853 } 854 855 if (i & 1) /* Figure out where to put control byte */ 856 pktbuf[i/2] = (pktbuf[i/2] & 0xff00) | CTLB_ODD; 857 else 858 pktbuf[i/2] = 0; 859 pktlen -= 4; 860 #ifdef ESDEBUG 861 if (pktlen > sizeof(pktbuf) && i > (sizeof(pktbuf) * 2)) 862 printf("%s: esstart packet longer than pktbuf\n", 863 sc->sc_dev.dv_xname); 864 #endif 865 #if 0 /* doesn't quite work? */ 866 lbuf = (u_long *)(pktbuf); 867 ldata = (u_long *)data; 868 cnt = pktlen / 4; 869 while(cnt--) 870 *ldata = *lbuf++; 871 if (pktlen & 2) { 872 buf = (u_short *)lbuf; 873 *data = *buf; 874 } 875 #else 876 #ifdef ESDEBUG 877 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 878 printf("%s: esstart++2 BSR not 2: %04x\n", sc->sc_dev.dv_xname, 879 smc->b2.bsr); 880 smc->b2.bsr = BSR_BANK2; 881 } 882 start_ptr = SWAP(smc->b2.ptr); /* save PTR before copy */ 883 #endif 884 buf = pktbuf; 885 cnt = pktlen / 2; 886 while (cnt--) 887 *data = *buf++; 888 #ifdef ESDEBUG 889 end_ptr = SWAP(smc->b2.ptr); /* save PTR after copy */ 890 #endif 891 #endif 892 #else /* USEPKTBUF */ 893 pktctlw = 0; 894 oddbyte = needbyte = 0; 895 for (m0 = m; m; m = m->m_next) { 896 buf = mtod(m, u_short *); 897 cnt = m->m_len / 2; 898 if (needbyte) { 899 oddbyte |= *buf >> 8; 900 *data = oddbyte; 901 } 902 while (cnt--) 903 *data = *buf++; 904 if (m->m_len & 1) 905 pktctlw = (*buf & 0xff00) | CTLB_ODD; 906 if (m->m_len & 1 && m->m_next) 907 printf("%s: esstart odd byte count in mbuf\n", 908 sc->sc_dev.dv_xname); 909 } 910 *data = pktctlw; 911 #endif /* USEPKTBUF */ 912 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 913 /* 914 * The bank select register has changed. This seems 915 * to happen with my A2000/Zeus once in a while. It 916 * appears that the Ethernet chip resets while 917 * copying the transmit buffer. Requeue the current 918 * transmit buffer and reinitialize the interface. 919 * The initialize routine will take care of 920 * retransmitting the buffer. mhitch 921 */ 922 #ifdef DIAGNOSTIC 923 printf("%s: esstart+++ BSR not 2: %04x\n", 924 sc->sc_dev.dv_xname, smc->b2.bsr); 925 #endif 926 smc->b2.bsr = BSR_BANK2; 927 #ifdef ESDEBUG 928 printf("start_ptr %04x end_ptr %04x cur ptr %04x\n", 929 start_ptr, end_ptr, SWAP(smc->b2.ptr)); 930 --sc->sc_smcbusy; 931 #endif 932 IF_PREPEND(&sc->sc_arpcom.ac_if.if_snd, m0); 933 esinit(sc); /* It's really hosed - reset */ 934 return; 935 } 936 smc->b2.mmucr = MMUCR_ENQ_TX; 937 if (smc->b2.pnr != active_pnr) 938 printf("%s: esstart - PNR changed %x->%x\n", 939 sc->sc_dev.dv_xname, active_pnr, smc->b2.pnr); 940 #if NBPFILTER > 0 941 if (sc->sc_arpcom.ac_if.if_bpf) 942 bpf_mtap(sc->sc_arpcom.ac_if.if_bpf, m0); 943 #endif 944 m_freem(m0); 945 sc->sc_arpcom.ac_if.if_opackets++; /* move to interrupt? */ 946 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 947 } 948 smc->b2.msk = sc->sc_intctl; 949 #ifdef ESDEBUG 950 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 951 printf("%s: esstart++++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 952 smc->b2.bsr); 953 smc->b2.bsr = BSR_BANK2; 954 } 955 if (--sc->sc_smcbusy) { 956 printf("%s: esstart busy on exit\n", sc->sc_dev.dv_xname); 957 panic("esstart busy on exit"); 958 } 959 #endif 960 } 961 962 int 963 esioctl(ifp, command, data) 964 register struct ifnet *ifp; 965 u_long command; 966 caddr_t data; 967 { 968 struct es_softc *sc = ifp->if_softc; 969 register struct ifaddr *ifa = (struct ifaddr *)data; 970 struct ifreq *ifr = (struct ifreq *)data; 971 int s, error = 0; 972 973 s = splnet(); 974 975 switch (command) { 976 977 case SIOCSIFADDR: 978 ifp->if_flags |= IFF_UP; 979 980 switch (ifa->ifa_addr->sa_family) { 981 #ifdef INET 982 case AF_INET: 983 esinit(sc); 984 arp_ifinit(&sc->sc_arpcom, ifa); 985 break; 986 #endif 987 #ifdef NS 988 case AF_NS: 989 { 990 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 991 992 if (ns_nullhost(*ina)) 993 ina->x_host = 994 *(union ns_host *)(sc->sc_arpcom.ac_enaddr); 995 else 996 bcopy(ina->x_host.c_host, 997 sc->sc_arpcom.ac_enaddr, 998 sizeof(sc->sc_arpcom.ac_enaddr)); 999 /* Set new address. */ 1000 esinit(sc); 1001 break; 1002 } 1003 #endif 1004 default: 1005 esinit(sc); 1006 break; 1007 } 1008 break; 1009 1010 case SIOCSIFFLAGS: 1011 /* 1012 * If interface is marked down and it is running, then stop it 1013 */ 1014 if ((ifp->if_flags & IFF_UP) == 0 && 1015 (ifp->if_flags & IFF_RUNNING) != 0) { 1016 /* 1017 * If interface is marked down and it is running, then 1018 * stop it. 1019 */ 1020 esstop(sc); 1021 ifp->if_flags &= ~IFF_RUNNING; 1022 } else if ((ifp->if_flags & IFF_UP) != 0 && 1023 (ifp->if_flags & IFF_RUNNING) == 0) { 1024 /* 1025 * If interface is marked up and it is stopped, then 1026 * start it. 1027 */ 1028 esinit(sc); 1029 } else { 1030 /* 1031 * Reset the interface to pick up changes in any other 1032 * flags that affect hardware registers. 1033 */ 1034 esstop(sc); 1035 esinit(sc); 1036 } 1037 #ifdef ESDEBUG 1038 if (ifp->if_flags & IFF_DEBUG) 1039 esdebug = sc->sc_debug = 1; 1040 else 1041 esdebug = sc->sc_debug = 0; 1042 #endif 1043 break; 1044 1045 case SIOCADDMULTI: 1046 case SIOCDELMULTI: 1047 error = (command == SIOCADDMULTI) ? 1048 ether_addmulti(ifr, &sc->sc_arpcom) : 1049 ether_delmulti(ifr, &sc->sc_arpcom); 1050 1051 if (error == ENETRESET) { 1052 /* 1053 * Multicast list has changed; set the hardware filter 1054 * accordingly. 1055 */ 1056 /* XXX */ 1057 error = 0; 1058 } 1059 break; 1060 1061 default: 1062 error = EINVAL; 1063 } 1064 1065 splx(s); 1066 return (error); 1067 } 1068 1069 void 1070 esreset(sc) 1071 struct es_softc *sc; 1072 { 1073 int s; 1074 1075 s = splnet(); 1076 esstop(sc); 1077 esinit(sc); 1078 splx(s); 1079 } 1080 1081 void 1082 eswatchdog(ifp) 1083 struct ifnet *ifp; 1084 { 1085 struct es_softc *sc = ifp->if_softc; 1086 1087 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 1088 ++sc->sc_arpcom.ac_if.if_oerrors; 1089 1090 esreset(sc); 1091 } 1092
Indexes created Mon Sep 29 21:09:56 GMT 2025