if_es.c revision 1.30
1 /* $NetBSD: if_es.c,v 1.30 2002/03/03 18:21:37 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 <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: if_es.c,v 1.30 2002/03/03 18:21:37 mhitch Exp $"); 42 43 #include "bpfilter.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/mbuf.h> 48 #include <sys/buf.h> 49 #include <sys/protosw.h> 50 #include <sys/socket.h> 51 #include <sys/syslog.h> 52 #include <sys/ioctl.h> 53 #include <sys/errno.h> 54 #include <sys/device.h> 55 56 #include <net/if.h> 57 #include <net/if_dl.h> 58 #include <net/if_ether.h> 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_inarp.h> 66 #endif 67 68 #ifdef NS 69 #include <netns/ns.h> 70 #include <netns/ns_if.h> 71 #endif 72 73 #include <machine/cpu.h> 74 #include <machine/mtpr.h> 75 #include <amiga/amiga/device.h> 76 #include <amiga/amiga/isr.h> 77 #include <amiga/dev/zbusvar.h> 78 #include <amiga/dev/if_esreg.h> 79 80 #define SWAP(x) (((x & 0xff) << 8) | ((x >> 8) & 0xff)) 81 82 #define USEPKTBUF 83 84 /* 85 * Ethernet software status per interface. 86 * 87 * Each interface is referenced by a network interface structure, 88 * es_if, which the routing code uses to locate the interface. 89 * This structure contains the output queue for the interface, its address, ... 90 */ 91 struct es_softc { 92 struct device sc_dev; 93 struct isr sc_isr; 94 struct ethercom sc_ethercom; /* common Ethernet structures */ 95 void *sc_base; /* base address of board */ 96 short sc_iflags; 97 unsigned short sc_intctl; 98 #ifdef ESDEBUG 99 int sc_debug; 100 short sc_intbusy; /* counter for interrupt rentered */ 101 short sc_smcbusy; /* counter for other rentry checks */ 102 #endif 103 }; 104 105 #if NBPFILTER > 0 106 #include <net/bpf.h> 107 #include <net/bpfdesc.h> 108 #endif 109 110 #ifdef ESDEBUG 111 /* console error messages */ 112 int esdebug = 0; 113 int estxints = 0; /* IST_TX with TX enabled */ 114 int estxint2 = 0; /* IST_TX active after IST_TX_EMPTY */ 115 int estxint3 = 0; /* IST_TX interrupt processed */ 116 int estxint4 = 0; /* ~TEMPTY counts */ 117 int estxint5 = 0; /* IST_TX_EMPTY interrupts */ 118 void es_dump_smcregs(char *, union smcregs *); 119 #endif 120 121 int esintr(void *); 122 void esstart(struct ifnet *); 123 void eswatchdog(struct ifnet *); 124 int esioctl(struct ifnet *, u_long, caddr_t); 125 void esrint(struct es_softc *); 126 void estint(struct es_softc *); 127 void esinit(struct es_softc *); 128 void esreset(struct es_softc *); 129 void esstop(struct es_softc *); 130 131 int esmatch(struct device *, struct cfdata *, void *); 132 void esattach(struct device *, struct device *, void *); 133 134 struct cfattach es_ca = { 135 sizeof(struct es_softc), esmatch, esattach 136 }; 137 138 int 139 esmatch(struct device *parent, struct cfdata *cfp, 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(struct device *parent, struct device *self, void *aux) 157 { 158 struct es_softc *sc = (void *)self; 159 struct zbus_args *zap = aux; 160 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 161 unsigned long ser; 162 u_int8_t myaddr[ETHER_ADDR_LEN]; 163 164 sc->sc_base = zap->va; 165 166 /* 167 * Manufacturer decides the 3 first bytes, i.e. ethernet vendor ID. 168 * (Currently only Ameristar.) 169 */ 170 myaddr[0] = 0x00; 171 myaddr[1] = 0x00; 172 myaddr[2] = 0x9f; 173 174 /* 175 * Serial number for board contains last 3 bytes. 176 */ 177 ser = (unsigned long) zap->serno; 178 179 myaddr[3] = (ser >> 16) & 0xff; 180 myaddr[4] = (ser >> 8) & 0xff; 181 myaddr[5] = (ser ) & 0xff; 182 183 /* Initialize ifnet structure. */ 184 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 185 ifp->if_softc = sc; 186 ifp->if_ioctl = esioctl; 187 ifp->if_start = esstart; 188 ifp->if_watchdog = eswatchdog; 189 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | 190 IFF_MULTICAST; 191 192 /* Attach the interface. */ 193 if_attach(ifp); 194 ether_ifattach(ifp, myaddr); 195 196 /* Print additional info when attached. */ 197 printf(": address %s\n", ether_sprintf(myaddr)); 198 199 sc->sc_isr.isr_intr = esintr; 200 sc->sc_isr.isr_arg = sc; 201 sc->sc_isr.isr_ipl = 2; 202 add_isr(&sc->sc_isr); 203 } 204 205 #ifdef ESDEBUG 206 void 207 es_dump_smcregs(char *where, union smcregs *smc) 208 { 209 u_short cur_bank = smc->b0.bsr & BSR_MASK; 210 211 printf("SMC registers %p from %s bank %04x\n", smc, where, 212 smc->b0.bsr); 213 smc->b0.bsr = BSR_BANK0; 214 printf("TCR %04x EPHSR %04x RCR %04x ECR %04x MIR %04x MCR %04x\n", 215 SWAP(smc->b0.tcr), SWAP(smc->b0.ephsr), SWAP(smc->b0.rcr), 216 SWAP(smc->b0.ecr), SWAP(smc->b0.mir), SWAP(smc->b0.mcr)); 217 smc->b1.bsr = BSR_BANK1; 218 printf("CR %04x BAR %04x IAR %04x %04x %04x GPR %04x CTR %04x\n", 219 SWAP(smc->b1.cr), SWAP(smc->b1.bar), smc->b1.iar[0], smc->b1.iar[1], 220 smc->b1.iar[2], smc->b1.gpr, SWAP(smc->b1.ctr)); 221 smc->b2.bsr = BSR_BANK2; 222 printf("MMUCR %04x PNR %02x ARR %02x FIFO %04x PTR %04x", 223 SWAP(smc->b2.mmucr), smc->b2.pnr, smc->b2.arr, smc->b2.fifo, 224 SWAP(smc->b2.ptr)); 225 printf(" DATA %04x %04x IST %02x MSK %02x\n", smc->b2.data, 226 smc->b2.datax, smc->b2.ist, smc->b2.msk); 227 smc->b3.bsr = BSR_BANK3; 228 printf("MT %04x %04x %04x %04x\n", 229 smc->b3.mt[0], smc->b3.mt[1], smc->b3.mt[2], smc->b3.mt[3]); 230 smc->b3.bsr = cur_bank; 231 } 232 #endif 233 234 void 235 esstop(struct es_softc *sc) 236 { 237 union smcregs *smc = sc->sc_base; 238 239 /* 240 * Clear interrupt mask; disable all interrupts. 241 */ 242 smc->b2.bsr = BSR_BANK2; 243 smc->b2.msk = 0; 244 245 /* 246 * Disable transmitter and receiver. 247 */ 248 smc->b0.bsr = BSR_BANK0; 249 smc->b0.rcr = 0; 250 smc->b0.tcr = 0; 251 252 /* 253 * Cancel watchdog timer. 254 */ 255 sc->sc_ethercom.ec_if.if_timer = 0; 256 } 257 258 void 259 esinit(struct es_softc *sc) 260 { 261 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 262 union smcregs *smc = sc->sc_base; 263 int s; 264 265 s = splnet(); 266 267 #ifdef ESDEBUG 268 if (ifp->if_flags & IFF_RUNNING) 269 es_dump_smcregs("esinit", smc); 270 #endif 271 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 272 smc->b0.rcr = RCR_EPH_RST; 273 smc->b0.rcr = 0; 274 smc->b3.bsr = BSR_BANK3; /* Select bank 3 */ 275 smc->b3.mt[0] = 0; /* clear Multicast table */ 276 smc->b3.mt[1] = 0; 277 smc->b3.mt[2] = 0; 278 smc->b3.mt[3] = 0; 279 /* XXX set Multicast table from Multicast list */ 280 smc->b1.bsr = BSR_BANK1; /* Select bank 1 */ 281 smc->b1.cr = CR_RAM32K | CR_NO_WAIT_ST | CR_SET_SQLCH; 282 smc->b1.ctr = CTR_AUTO_RLSE | CTR_TE_ENA; 283 smc->b1.iar[0] = *((unsigned short *) &LLADDR(ifp->if_sadl)[0]); 284 smc->b1.iar[1] = *((unsigned short *) &LLADDR(ifp->if_sadl)[2]); 285 smc->b1.iar[2] = *((unsigned short *) &LLADDR(ifp->if_sadl)[4]); 286 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 287 smc->b2.mmucr = MMUCR_RESET; 288 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 289 smc->b0.mcr = SWAP(0x0020); /* reserve 8K for transmit buffers */ 290 smc->b0.tcr = TCR_PAD_EN | (TCR_TXENA + TCR_MON_CSN); 291 smc->b0.rcr = RCR_FILT_CAR | RCR_STRIP_CRC | RCR_RXEN | RCR_ALLMUL; 292 /* XXX add promiscuous flags */ 293 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 294 smc->b2.msk = sc->sc_intctl = MSK_RX_OVRN | MSK_RX | MSK_EPHINT; 295 296 /* Interface is now 'running', with no output active. */ 297 ifp->if_flags |= IFF_RUNNING; 298 ifp->if_flags &= ~IFF_OACTIVE; 299 300 /* Attempt to start output, if any. */ 301 esstart(ifp); 302 303 splx(s); 304 } 305 306 int 307 esintr(void *arg) 308 { 309 struct es_softc *sc = arg; 310 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 311 u_short intsts, intact; 312 union smcregs *smc; 313 int s = splnet(); 314 315 smc = sc->sc_base; 316 #ifdef ESDEBUG 317 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2 && 318 ifp->if_flags & IFF_RUNNING) { 319 printf("%s: intr BSR not 2: %04x\n", sc->sc_dev.dv_xname, 320 smc->b2.bsr); 321 smc->b2.bsr = BSR_BANK2; 322 } 323 #endif 324 intsts = smc->b2.ist; 325 intact = smc->b2.msk & intsts; 326 if ((intact) == 0) { 327 splx(s); 328 return (0); 329 } 330 #ifdef ESDEBUG 331 if (esdebug) 332 printf ("%s: esintr ist %02x msk %02x", 333 sc->sc_dev.dv_xname, intsts, smc->b2.msk); 334 if (sc->sc_intbusy++) { 335 printf("%s: esintr re-entered\n", sc->sc_dev.dv_xname); 336 panic("esintr re-entered"); 337 } 338 if (sc->sc_smcbusy) 339 printf("%s: esintr interrupted busy %d\n", sc->sc_dev.dv_xname, 340 sc->sc_smcbusy); 341 #endif 342 smc->b2.msk = 0; 343 #ifdef ESDEBUG 344 if (esdebug) 345 printf ("=>%02x%02x pnr %02x arr %02x fifo %04x\n", 346 smc->b2.ist, smc->b2.ist, smc->b2.pnr, smc->b2.arr, 347 smc->b2.fifo); 348 #endif 349 if (intact & IST_ALLOC) { 350 sc->sc_intctl &= ~MSK_ALLOC; 351 #ifdef ESDEBUG 352 if (esdebug || 1) 353 printf ("%s: ist %02x", sc->sc_dev.dv_xname, 354 intsts); 355 #endif 356 if ((smc->b2.arr & ARR_FAILED) == 0) { 357 u_char save_pnr; 358 #ifdef ESDEBUG 359 if (esdebug || 1) 360 printf (" arr %02x\n", smc->b2.arr); 361 #endif 362 save_pnr = smc->b2.pnr; 363 smc->b2.pnr = smc->b2.arr; 364 smc->b2.mmucr = MMUCR_RLSPKT; 365 while (smc->b2.mmucr & MMUCR_BUSY) 366 ; 367 smc->b2.pnr = save_pnr; 368 ifp->if_flags &= ~IFF_OACTIVE; 369 ifp->if_timer = 0; 370 } 371 #ifdef ESDEBUG 372 else if (esdebug || 1) 373 printf (" IST_ALLOC with ARR_FAILED?\n"); 374 #endif 375 } 376 #ifdef ESDEBUG 377 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 378 printf("%s: intr+ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 379 smc->b2.bsr); 380 smc->b2.bsr = BSR_BANK2; 381 } 382 #endif 383 while ((smc->b2.fifo & FIFO_REMPTY) == 0) { 384 esrint(sc); 385 } 386 #ifdef ESDEBUG 387 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 388 printf("%s: intr++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 389 smc->b2.bsr); 390 smc->b2.bsr = BSR_BANK2; 391 } 392 #endif 393 if (intact & IST_RX_OVRN) { 394 printf ("%s: Overrun ist %02x", sc->sc_dev.dv_xname, 395 intsts); 396 smc->b2.ist = ACK_RX_OVRN; 397 printf ("->%02x\n", smc->b2.ist); 398 ifp->if_ierrors++; 399 } 400 if (intact & IST_TX_EMPTY) { 401 u_short ecr; 402 #ifdef ESDEBUG 403 if (esdebug) 404 printf ("%s: TX EMPTY %02x", 405 sc->sc_dev.dv_xname, intsts); 406 ++estxint5; /* count # IST_TX_EMPTY ints */ 407 #endif 408 smc->b2.ist = ACK_TX_EMPTY; 409 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 410 ifp->if_timer = 0; 411 #ifdef ESDEBUG 412 if (esdebug) 413 printf ("->%02x intcl %x pnr %02x arr %02x\n", 414 smc->b2.ist, sc->sc_intctl, smc->b2.pnr, 415 smc->b2.arr); 416 #endif 417 if (smc->b2.ist & IST_TX) { 418 intact |= IST_TX; 419 #ifdef ESDEBUG 420 ++estxint2; /* count # TX after TX_EMPTY */ 421 #endif 422 } else { 423 smc->b0.bsr = BSR_BANK0; 424 ecr = smc->b0.ecr; /* Get error counters */ 425 if (ecr & 0xff00) 426 ifp->if_collisions += ((ecr >> 8) & 15) + 427 ((ecr >> 11) & 0x1e); 428 smc->b2.bsr = BSR_BANK2; 429 #if 0 430 smc->b2.mmucr = MMUCR_RESET_TX; /* XXX reset TX FIFO */ 431 #endif 432 } 433 } 434 if (intact & IST_TX) { 435 u_char tx_pnr, save_pnr; 436 u_short save_ptr, ephsr, tcr; 437 int n = 0; 438 #ifdef ESDEBUG 439 if (esdebug) { 440 printf ("%s: TX INT ist %02x", 441 sc->sc_dev.dv_xname, intsts); 442 printf ("->%02x\n", smc->b2.ist); 443 } 444 ++estxint3; /* count # IST_TX */ 445 #endif 446 zzzz: 447 #ifdef ESDEBUG 448 ++estxint4; /* count # ~TEMPTY */ 449 #endif 450 smc->b0.bsr = BSR_BANK0; 451 ephsr = smc->b0.ephsr; /* get EPHSR */ 452 tcr = smc->b0.tcr; /* and TCR */ 453 smc->b2.bsr = BSR_BANK2; 454 save_ptr = smc->b2.ptr; 455 save_pnr = smc->b2.pnr; 456 tx_pnr = smc->b2.fifo >> 8; /* pktno from completion fifo */ 457 smc->b2.pnr = tx_pnr; /* set TX packet number */ 458 smc->b2.ptr = PTR_READ; /* point to status word */ 459 #if 0 /* XXXX */ 460 printf("%s: esintr TXINT IST %02x PNR %02x(%d)", 461 sc->sc_dev.dv_xname, smc->b2.ist, 462 tx_pnr, n); 463 printf(" Status %04x", smc->b2.data); 464 printf(" EPHSR %04x\n", ephsr); 465 #endif 466 if ((smc->b2.data & EPHSR_TX_SUC) == 0 && (tcr & TCR_TXENA) == 0) { 467 /* 468 * Transmitter was stopped for some error. Enqueue 469 * the packet again and restart the transmitter. 470 * May need some check to limit the number of retries. 471 */ 472 smc->b2.mmucr = MMUCR_ENQ_TX; 473 smc->b0.bsr = BSR_BANK0; 474 smc->b0.tcr |= TCR_TXENA; 475 smc->b2.bsr = BSR_BANK2; 476 ifp->if_oerrors++; 477 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 478 } else { 479 /* 480 * This shouldn't have happened: IST_TX indicates 481 * the TX completion FIFO is not empty, but the 482 * status for the packet on the completion FIFO 483 * shows that the transmit was sucessful. Since 484 * AutoRelease is being used, a sucessful transmit 485 * should not result in a packet on the completion 486 * FIFO. Also, that packet doesn't seem to want 487 * to be acknowledged. If this occurs, just reset 488 * the TX FIFOs. 489 */ 490 #if 1 491 if (smc->b2.ist & IST_TX_EMPTY) { 492 smc->b2.mmucr = MMUCR_RESET_TX; 493 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 494 ifp->if_timer = 0; 495 } 496 #endif 497 #ifdef ESDEBUG 498 ++estxints; /* count IST_TX with TX enabled */ 499 #endif 500 } 501 smc->b2.pnr = save_pnr; 502 smc->b2.ptr = save_ptr; 503 smc->b2.ist = ACK_TX; 504 505 if ((smc->b2.fifo & FIFO_TEMPTY) == 0 && n++ < 32) { 506 #if 0 /* XXXX */ 507 printf("%s: multiple TX int(%2d) pnr %02x ist %02x fifo %04x", 508 sc->sc_dev.dv_xname, n, tx_pnr, smc->b2.ist, smc->b2.fifo); 509 smc->w2.istmsk = ACK_TX << 8; 510 printf(" %04x\n", smc->b2.fifo); 511 #endif 512 if (tx_pnr != (smc->b2.fifo >> 8)) 513 goto zzzz; 514 } 515 } 516 if (intact & IST_EPHINT) { 517 ifp->if_oerrors++; 518 esreset(sc); 519 } 520 /* output packets */ 521 estint(sc); 522 #ifdef ESDEBUG 523 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 524 printf("%s: intr+++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 525 smc->b2.bsr); 526 smc->b2.bsr = BSR_BANK2; 527 } 528 #endif 529 smc->b2.msk = sc->sc_intctl; 530 #ifdef ESDEBUG 531 if (--sc->sc_intbusy) { 532 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 533 panic("esintr busy on exit"); 534 } 535 #endif 536 splx(s); 537 return (1); 538 } 539 540 void 541 esrint(struct es_softc *sc) 542 { 543 union smcregs *smc = sc->sc_base; 544 u_short len; 545 short cnt; 546 u_short pktctlw, pktlen, *buf; 547 volatile u_short *data; 548 #if 0 549 u_long *lbuf; 550 volatile u_long *ldata; 551 #endif 552 struct ifnet *ifp; 553 struct mbuf *top, **mp, *m; 554 #ifdef USEPKTBUF 555 u_char *b, pktbuf[1530]; 556 #endif 557 #ifdef ESDEBUG 558 int i; 559 #endif 560 561 ifp = &sc->sc_ethercom.ec_if; 562 #ifdef ESDEBUG 563 if (esdebug) 564 printf ("%s: esrint fifo %04x", sc->sc_dev.dv_xname, 565 smc->b2.fifo); 566 if (sc->sc_smcbusy++) { 567 printf("%s: esrint re-entered\n", sc->sc_dev.dv_xname); 568 panic("esrint re-entered"); 569 } 570 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 571 printf("%s: rint BSR not 2: %04x\n", sc->sc_dev.dv_xname, 572 smc->b2.bsr); 573 smc->b2.bsr = BSR_BANK2; 574 } 575 #endif 576 data = (u_short *)&smc->b2.data; 577 smc->b2.ptr = PTR_RCV | PTR_AUTOINCR | PTR_READ | SWAP(0x0002); 578 (void) smc->b2.mmucr; 579 #ifdef ESDEBUG 580 if (esdebug) 581 printf ("->%04x", smc->b2.fifo); 582 #endif 583 len = *data; 584 len = SWAP(len); /* Careful of macro side-effects */ 585 #ifdef ESDEBUG 586 if (esdebug) 587 printf (" length %d", len); 588 #endif 589 smc->b2.ptr = PTR_RCV | (PTR_AUTOINCR + PTR_READ) | SWAP(0x0000); 590 (void) smc->b2.mmucr; 591 pktctlw = *data; 592 pktlen = *data; 593 pktctlw = SWAP(pktctlw); 594 pktlen = SWAP(pktlen) - 6; 595 if (pktctlw & RFSW_ODDFRM) 596 pktlen++; 597 if (len > 1530) { 598 printf("%s: Corrupted packet length-sts %04x bytcnt %04x len %04x bank %04x\n", 599 sc->sc_dev.dv_xname, pktctlw, pktlen, len, smc->b2.bsr); 600 /* XXX ignore packet, or just truncate? */ 601 #if defined(ESDEBUG) && defined(DDB) 602 if ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) 603 Debugger(); 604 #endif 605 smc->b2.bsr = BSR_BANK2; 606 smc->b2.mmucr = MMUCR_REMRLS_RX; 607 while (smc->b2.mmucr & MMUCR_BUSY) 608 ; 609 ++ifp->if_ierrors; 610 #ifdef ESDEBUG 611 if (--sc->sc_smcbusy) { 612 printf("%s: esrintr busy on bad packet exit\n", 613 sc->sc_dev.dv_xname); 614 panic("esrintr busy on exit"); 615 } 616 #endif 617 return; 618 } 619 #ifdef USEPKTBUF 620 #if 0 621 lbuf = (u_long *) pktbuf; 622 ldata = (u_long *)data; 623 cnt = (len - 4) / 4; 624 while (cnt--) 625 *lbuf++ = *ldata; 626 if ((len - 4) & 2) { 627 buf = (u_short *) lbuf; 628 *buf = *data; 629 } 630 #else 631 buf = (u_short *)pktbuf; 632 cnt = (len - 4) / 2; 633 while (cnt--) 634 *buf++ = *data; 635 #endif 636 smc->b2.mmucr = MMUCR_REMRLS_RX; 637 while (smc->b2.mmucr & MMUCR_BUSY) 638 ; 639 #ifdef ESDEBUG 640 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 641 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 642 /* count input error? */ 643 } 644 if (esdebug) { 645 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 646 smc->b2.fifo); 647 for (i = 0; i < pktlen; ++i) 648 printf ("%02x%s", pktbuf[i], ((i & 31) == 31) ? "\n" : 649 ""); 650 if (i & 31) 651 printf ("\n"); 652 } 653 #endif 654 #else /* USEPKTBUF */ 655 /* XXX copy directly from controller to mbuf */ 656 #ifdef ESDEBUG 657 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 658 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 659 /* count input error? */ 660 } 661 if (esdebug) { 662 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 663 smc->b2.fifo); 664 } 665 #endif 666 #endif /* USEPKTBUF */ 667 ifp->if_ipackets++; 668 MGETHDR(m, M_DONTWAIT, MT_DATA); 669 if (m == NULL) 670 return; 671 m->m_pkthdr.rcvif = ifp; 672 m->m_pkthdr.len = pktlen; 673 len = MHLEN; 674 top = NULL; 675 mp = ⊤ 676 #ifdef USEPKTBUF 677 b = pktbuf; 678 #endif 679 while (pktlen > 0) { 680 if (top) { 681 MGET(m, M_DONTWAIT, MT_DATA); 682 if (m == 0) { 683 m_freem(top); 684 return; 685 } 686 len = MLEN; 687 } 688 if (pktlen >= MINCLSIZE) { 689 MCLGET(m, M_DONTWAIT); 690 if (m->m_flags & M_EXT) 691 len = MCLBYTES; 692 } 693 m->m_len = len = min(pktlen, len); 694 #ifdef USEPKTBUF 695 bcopy((caddr_t)b, mtod(m, caddr_t), len); 696 b += len; 697 #else /* USEPKTBUF */ 698 buf = mtod(m, u_short *); 699 cnt = len / 2; 700 while (cnt--) 701 *buf++ = *data; 702 if (len & 1) 703 *buf = *data; /* XXX should be byte store */ 704 #ifdef ESDEBUG 705 if (esdebug) { 706 buf = mtod(m, u_short *); 707 for (i = 0; i < len; ++i) 708 printf ("%02x%s", ((u_char *)buf)[i], 709 ((i & 31) == 31) ? "\n" : ""); 710 if (i & 31) 711 printf ("\n"); 712 } 713 #endif 714 #endif /* USEPKTBUF */ 715 pktlen -= len; 716 *mp = m; 717 mp = &m->m_next; 718 } 719 #ifndef USEPKTBUF 720 smc->b2.mmucr = MMUCR_REMRLS_RX; 721 while (smc->b2.mmucr & MMUCR_BUSY) 722 ; 723 #endif 724 #if NBPFILTER > 0 725 /* 726 * Check if there's a BPF listener on this interface. If so, hand off 727 * the raw packet to bpf. 728 */ 729 if (ifp->if_bpf) 730 bpf_mtap(ifp->if_bpf, top); 731 #endif 732 (*ifp->if_input)(ifp, top); 733 #ifdef ESDEBUG 734 if (--sc->sc_smcbusy) { 735 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 736 panic("esintr busy on exit"); 737 } 738 #endif 739 } 740 741 void 742 estint(struct es_softc *sc) 743 { 744 745 esstart(&sc->sc_ethercom.ec_if); 746 } 747 748 void 749 esstart(struct ifnet *ifp) 750 { 751 struct es_softc *sc = ifp->if_softc; 752 union smcregs *smc = sc->sc_base; 753 struct mbuf *m0, *m; 754 #ifdef USEPKTBUF 755 u_short pktbuf[ETHERMTU + 2]; 756 #else 757 u_short oddbyte, needbyte; 758 #endif 759 u_short pktctlw, pktlen; 760 u_short *buf; 761 volatile u_short *data; 762 #if 0 763 u_long *lbuf; 764 volatile u_long *ldata; 765 #endif 766 short cnt; 767 int i; 768 u_char active_pnr; 769 770 if ((sc->sc_ethercom.ec_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) != 771 IFF_RUNNING) 772 return; 773 774 #ifdef ESDEBUG 775 if (sc->sc_smcbusy++) { 776 printf("%s: esstart re-entered\n", sc->sc_dev.dv_xname); 777 panic("esstart re-entred"); 778 } 779 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 780 printf("%s: esstart BSR not 2: %04x\n", sc->sc_dev.dv_xname, 781 smc->b2.bsr); 782 smc->b2.bsr = BSR_BANK2; 783 } 784 #endif 785 for (;;) { 786 #ifdef ESDEBUG 787 u_short start_ptr, end_ptr; 788 #endif 789 /* 790 * Sneak a peek at the next packet to get the length 791 * and see if the SMC 91C90 can accept it. 792 */ 793 m = sc->sc_ethercom.ec_if.if_snd.ifq_head; 794 if (!m) 795 break; 796 #ifdef ESDEBUG 797 if (esdebug && (m->m_next || m->m_len & 1)) 798 printf("%s: esstart m_next %p m_len %d\n", 799 sc->sc_dev.dv_xname, m->m_next, m->m_len); 800 #endif 801 for (m0 = m, pktlen = 0; m0; m0 = m0->m_next) 802 pktlen += m0->m_len; 803 pktctlw = 0; 804 pktlen += 4; 805 if (pktlen & 1) 806 ++pktlen; /* control byte after last byte */ 807 else 808 pktlen += 2; /* control byte after pad byte */ 809 smc->b2.mmucr = MMUCR_ALLOC | (pktlen & 0x0700); 810 for (i = 0; i <= 5; ++i) 811 if ((smc->b2.arr & ARR_FAILED) == 0) 812 break; 813 if (smc->b2.arr & ARR_FAILED) { 814 sc->sc_ethercom.ec_if.if_flags |= IFF_OACTIVE; 815 sc->sc_intctl |= MSK_ALLOC; 816 sc->sc_ethercom.ec_if.if_timer = 5; 817 break; 818 } 819 active_pnr = smc->b2.pnr = smc->b2.arr; 820 821 #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 IF_DEQUEUE(&sc->sc_ethercom.ec_if.if_snd, m); 829 smc->b2.ptr = PTR_AUTOINCR; 830 (void) smc->b2.mmucr; 831 data = (u_short *)&smc->b2.data; 832 *data = SWAP(pktctlw); 833 *data = SWAP(pktlen); 834 #ifdef ESDEBUG 835 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 836 printf("%s: esstart++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 837 smc->b2.bsr); 838 smc->b2.bsr = BSR_BANK2; 839 } 840 #endif 841 #ifdef USEPKTBUF 842 i = 0; 843 for (m0 = m; m; m = m->m_next) { 844 bcopy(mtod(m, caddr_t), (char *)pktbuf + i, m->m_len); 845 i += m->m_len; 846 } 847 848 if (i & 1) /* Figure out where to put control byte */ 849 pktbuf[i/2] = (pktbuf[i/2] & 0xff00) | CTLB_ODD; 850 else 851 pktbuf[i/2] = 0; 852 pktlen -= 4; 853 #ifdef ESDEBUG 854 if (pktlen > sizeof(pktbuf) && i > (sizeof(pktbuf) * 2)) 855 printf("%s: esstart packet longer than pktbuf\n", 856 sc->sc_dev.dv_xname); 857 #endif 858 #if 0 /* doesn't quite work? */ 859 lbuf = (u_long *)(pktbuf); 860 ldata = (u_long *)data; 861 cnt = pktlen / 4; 862 while(cnt--) 863 *ldata = *lbuf++; 864 if (pktlen & 2) { 865 buf = (u_short *)lbuf; 866 *data = *buf; 867 } 868 #else 869 #ifdef ESDEBUG 870 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 871 printf("%s: esstart++2 BSR not 2: %04x\n", sc->sc_dev.dv_xname, 872 smc->b2.bsr); 873 smc->b2.bsr = BSR_BANK2; 874 } 875 start_ptr = SWAP(smc->b2.ptr); /* save PTR before copy */ 876 #endif 877 buf = pktbuf; 878 cnt = pktlen / 2; 879 while (cnt--) 880 *data = *buf++; 881 #ifdef ESDEBUG 882 end_ptr = SWAP(smc->b2.ptr); /* save PTR after copy */ 883 #endif 884 #endif 885 #else /* USEPKTBUF */ 886 pktctlw = 0; 887 oddbyte = needbyte = 0; 888 for (m0 = m; m; m = m->m_next) { 889 buf = mtod(m, u_short *); 890 cnt = m->m_len / 2; 891 if (needbyte) { 892 oddbyte |= *buf >> 8; 893 *data = oddbyte; 894 } 895 while (cnt--) 896 *data = *buf++; 897 if (m->m_len & 1) 898 pktctlw = (*buf & 0xff00) | CTLB_ODD; 899 if (m->m_len & 1 && m->m_next) 900 printf("%s: esstart odd byte count in mbuf\n", 901 sc->sc_dev.dv_xname); 902 } 903 *data = pktctlw; 904 #endif /* USEPKTBUF */ 905 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 906 /* 907 * The bank select register has changed. This seems 908 * to happen with my A2000/Zeus once in a while. It 909 * appears that the Ethernet chip resets while 910 * copying the transmit buffer. Requeue the current 911 * transmit buffer and reinitialize the interface. 912 * The initialize routine will take care of 913 * retransmitting the buffer. mhitch 914 */ 915 #ifdef DIAGNOSTIC 916 printf("%s: esstart+++ BSR not 2: %04x\n", 917 sc->sc_dev.dv_xname, smc->b2.bsr); 918 #endif 919 smc->b2.bsr = BSR_BANK2; 920 #ifdef ESDEBUG 921 printf("start_ptr %04x end_ptr %04x cur ptr %04x\n", 922 start_ptr, end_ptr, SWAP(smc->b2.ptr)); 923 --sc->sc_smcbusy; 924 #endif 925 IF_PREPEND(&sc->sc_ethercom.ec_if.if_snd, m0); 926 esinit(sc); /* It's really hosed - reset */ 927 return; 928 } 929 smc->b2.mmucr = MMUCR_ENQ_TX; 930 if (smc->b2.pnr != active_pnr) 931 printf("%s: esstart - PNR changed %x->%x\n", 932 sc->sc_dev.dv_xname, active_pnr, smc->b2.pnr); 933 #if NBPFILTER > 0 934 if (sc->sc_ethercom.ec_if.if_bpf) 935 bpf_mtap(sc->sc_ethercom.ec_if.if_bpf, m0); 936 #endif 937 m_freem(m0); 938 sc->sc_ethercom.ec_if.if_opackets++; /* move to interrupt? */ 939 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 940 sc->sc_ethercom.ec_if.if_timer = 5; 941 } 942 smc->b2.msk = sc->sc_intctl; 943 #ifdef ESDEBUG 944 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 945 printf("%s: esstart++++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 946 smc->b2.bsr); 947 smc->b2.bsr = BSR_BANK2; 948 } 949 if (--sc->sc_smcbusy) { 950 printf("%s: esstart busy on exit\n", sc->sc_dev.dv_xname); 951 panic("esstart busy on exit"); 952 } 953 #endif 954 } 955 956 int 957 esioctl(register struct ifnet *ifp, u_long command, caddr_t data) 958 { 959 struct es_softc *sc = ifp->if_softc; 960 register struct ifaddr *ifa = (struct ifaddr *)data; 961 struct ifreq *ifr = (struct ifreq *)data; 962 int s, error = 0; 963 964 s = splnet(); 965 966 switch (command) { 967 968 case SIOCSIFADDR: 969 ifp->if_flags |= IFF_UP; 970 971 switch (ifa->ifa_addr->sa_family) { 972 #ifdef INET 973 case AF_INET: 974 esinit(sc); 975 arp_ifinit(ifp, ifa); 976 break; 977 #endif 978 #ifdef NS 979 case AF_NS: 980 { 981 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 982 983 if (ns_nullhost(*ina)) 984 ina->x_host = 985 *(union ns_host *)LLADDR(ifp->if_sadl); 986 else 987 bcopy(ina->x_host.c_host, 988 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 989 /* Set new address. */ 990 esinit(sc); 991 break; 992 } 993 #endif 994 default: 995 esinit(sc); 996 break; 997 } 998 break; 999 1000 case SIOCSIFFLAGS: 1001 /* 1002 * If interface is marked down and it is running, then stop it 1003 */ 1004 if ((ifp->if_flags & IFF_UP) == 0 && 1005 (ifp->if_flags & IFF_RUNNING) != 0) { 1006 /* 1007 * If interface is marked down and it is running, then 1008 * stop it. 1009 */ 1010 esstop(sc); 1011 ifp->if_flags &= ~IFF_RUNNING; 1012 } else if ((ifp->if_flags & IFF_UP) != 0 && 1013 (ifp->if_flags & IFF_RUNNING) == 0) { 1014 /* 1015 * If interface is marked up and it is stopped, then 1016 * start it. 1017 */ 1018 esinit(sc); 1019 } else { 1020 /* 1021 * Reset the interface to pick up changes in any other 1022 * flags that affect hardware registers. 1023 */ 1024 esstop(sc); 1025 esinit(sc); 1026 } 1027 #ifdef ESDEBUG 1028 if (ifp->if_flags & IFF_DEBUG) 1029 esdebug = sc->sc_debug = 1; 1030 else 1031 esdebug = sc->sc_debug = 0; 1032 #endif 1033 break; 1034 1035 case SIOCADDMULTI: 1036 case SIOCDELMULTI: 1037 error = (command == SIOCADDMULTI) ? 1038 ether_addmulti(ifr, &sc->sc_ethercom) : 1039 ether_delmulti(ifr, &sc->sc_ethercom); 1040 1041 if (error == ENETRESET) { 1042 /* 1043 * Multicast list has changed; set the hardware filter 1044 * accordingly. 1045 */ 1046 /* XXX */ 1047 error = 0; 1048 } 1049 break; 1050 1051 default: 1052 error = EINVAL; 1053 } 1054 1055 splx(s); 1056 return (error); 1057 } 1058 1059 /* 1060 * Reset the interface. 1061 */ 1062 void 1063 esreset(struct es_softc *sc) 1064 { 1065 int s; 1066 1067 s = splnet(); 1068 esstop(sc); 1069 esinit(sc); 1070 splx(s); 1071 } 1072 1073 void 1074 eswatchdog(struct ifnet *ifp) 1075 { 1076 struct es_softc *sc = ifp->if_softc; 1077 1078 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 1079 ++ifp->if_oerrors; 1080 1081 esreset(sc); 1082 } 1083
Indexes created Tue Sep 30 07:10:03 GMT 2025