if_es.c revision 1.50.8.2
1 /* $NetBSD: if_es.c,v 1.50.8.2 2014/05/22 11:39:28 yamt 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * SMC 91C90 Single-Chip Ethernet Controller 30 */ 31 #include "opt_ddb.h" 32 #include "opt_inet.h" 33 #include "opt_ns.h" 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: if_es.c,v 1.50.8.2 2014/05/22 11:39:28 yamt Exp $"); 37 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/if_dl.h> 52 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 55 #ifdef INET 56 #include <netinet/in.h> 57 #include <netinet/in_systm.h> 58 #include <netinet/in_var.h> 59 #include <netinet/ip.h> 60 #include <netinet/if_inarp.h> 61 #endif 62 63 #ifdef NS 64 #include <netns/ns.h> 65 #include <netns/ns_if.h> 66 #endif 67 68 #include <machine/cpu.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 device_t sc_dev; 87 struct isr sc_isr; 88 struct ethercom sc_ethercom; /* common Ethernet structures */ 89 struct ifmedia sc_media; /* our supported media */ 90 void *sc_base; /* base address of board */ 91 short sc_iflags; 92 unsigned short sc_intctl; 93 #ifdef ESDEBUG 94 int sc_debug; 95 short sc_intbusy; /* counter for interrupt rentered */ 96 short sc_smcbusy; /* counter for other rentry checks */ 97 #endif 98 }; 99 100 #include <net/bpf.h> 101 #include <net/bpfdesc.h> 102 103 #ifdef ESDEBUG 104 /* console error messages */ 105 int esdebug = 0; 106 int estxints = 0; /* IST_TX with TX enabled */ 107 int estxint2 = 0; /* IST_TX active after IST_TX_EMPTY */ 108 int estxint3 = 0; /* IST_TX interrupt processed */ 109 int estxint4 = 0; /* ~TEMPTY counts */ 110 int estxint5 = 0; /* IST_TX_EMPTY interrupts */ 111 void es_dump_smcregs(char *, union smcregs *); 112 #endif 113 114 int esintr(void *); 115 void esstart(struct ifnet *); 116 void eswatchdog(struct ifnet *); 117 int esioctl(struct ifnet *, u_long, void *); 118 void esrint(struct es_softc *); 119 void estint(struct es_softc *); 120 void esinit(struct es_softc *); 121 void esreset(struct es_softc *); 122 void esstop(struct es_softc *); 123 int esmediachange(struct ifnet *); 124 void esmediastatus(struct ifnet *, struct ifmediareq *); 125 126 int esmatch(device_t, cfdata_t, void *); 127 void esattach(device_t, device_t, void *); 128 129 CFATTACH_DECL_NEW(es, sizeof(struct es_softc), 130 esmatch, esattach, NULL, NULL); 131 132 int 133 esmatch(device_t parent, cfdata_t cf, void *aux) 134 { 135 struct zbus_args *zap = aux; 136 137 /* Ameristar A4066 ethernet card */ 138 if (zap->manid == 1053 && zap->prodid == 10) 139 return(1); 140 141 return (0); 142 } 143 144 /* 145 * Interface exists: make available by filling in network interface 146 * record. System will initialize the interface when it is ready 147 * to accept packets. 148 */ 149 void 150 esattach(device_t parent, device_t self, void *aux) 151 { 152 struct es_softc *sc = device_private(self); 153 struct zbus_args *zap = aux; 154 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 155 unsigned long ser; 156 u_int8_t myaddr[ETHER_ADDR_LEN]; 157 158 sc->sc_dev = self; 159 sc->sc_base = zap->va; 160 161 /* 162 * Manufacturer decides the 3 first bytes, i.e. ethernet vendor ID. 163 * (Currently only Ameristar.) 164 */ 165 myaddr[0] = 0x00; 166 myaddr[1] = 0x00; 167 myaddr[2] = 0x9f; 168 169 /* 170 * Serial number for board contains last 3 bytes. 171 */ 172 ser = (unsigned long) zap->serno; 173 174 myaddr[3] = (ser >> 16) & 0xff; 175 myaddr[4] = (ser >> 8) & 0xff; 176 myaddr[5] = (ser ) & 0xff; 177 178 /* Initialize ifnet structure. */ 179 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 180 ifp->if_softc = sc; 181 ifp->if_ioctl = esioctl; 182 ifp->if_start = esstart; 183 ifp->if_watchdog = eswatchdog; 184 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | 185 IFF_MULTICAST; 186 187 ifmedia_init(&sc->sc_media, 0, esmediachange, esmediastatus); 188 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 189 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 190 191 /* Attach the interface. */ 192 if_attach(ifp); 193 ether_ifattach(ifp, myaddr); 194 195 /* Print additional info when attached. */ 196 printf(": address %s\n", ether_sprintf(myaddr)); 197 198 sc->sc_isr.isr_intr = esintr; 199 sc->sc_isr.isr_arg = sc; 200 sc->sc_isr.isr_ipl = 2; 201 add_isr(&sc->sc_isr); 202 } 203 204 #ifdef ESDEBUG 205 void 206 es_dump_smcregs(char *where, union smcregs *smc) 207 { 208 u_short cur_bank = smc->b0.bsr & BSR_MASK; 209 210 printf("SMC registers %p from %s bank %04x\n", smc, where, 211 smc->b0.bsr); 212 smc->b0.bsr = BSR_BANK0; 213 printf("TCR %04x EPHSR %04x RCR %04x ECR %04x MIR %04x MCR %04x\n", 214 SWAP(smc->b0.tcr), SWAP(smc->b0.ephsr), SWAP(smc->b0.rcr), 215 SWAP(smc->b0.ecr), SWAP(smc->b0.mir), SWAP(smc->b0.mcr)); 216 smc->b1.bsr = BSR_BANK1; 217 printf("CR %04x BAR %04x IAR %04x %04x %04x GPR %04x CTR %04x\n", 218 SWAP(smc->b1.cr), SWAP(smc->b1.bar), smc->b1.iar[0], smc->b1.iar[1], 219 smc->b1.iar[2], smc->b1.gpr, SWAP(smc->b1.ctr)); 220 smc->b2.bsr = BSR_BANK2; 221 printf("MMUCR %04x PNR %02x ARR %02x FIFO %04x PTR %04x", 222 SWAP(smc->b2.mmucr), smc->b2.pnr, smc->b2.arr, smc->b2.fifo, 223 SWAP(smc->b2.ptr)); 224 printf(" DATA %04x %04x IST %02x MSK %02x\n", smc->b2.data, 225 smc->b2.datax, smc->b2.ist, smc->b2.msk); 226 smc->b3.bsr = BSR_BANK3; 227 printf("MT %04x %04x %04x %04x\n", 228 smc->b3.mt[0], smc->b3.mt[1], smc->b3.mt[2], smc->b3.mt[3]); 229 smc->b3.bsr = cur_bank; 230 } 231 #endif 232 233 void 234 esstop(struct es_softc *sc) 235 { 236 union smcregs *smc = sc->sc_base; 237 238 /* 239 * Clear interrupt mask; disable all interrupts. 240 */ 241 smc->b2.bsr = BSR_BANK2; 242 smc->b2.msk = 0; 243 244 /* 245 * Disable transmitter and receiver. 246 */ 247 smc->b0.bsr = BSR_BANK0; 248 smc->b0.rcr = 0; 249 smc->b0.tcr = 0; 250 251 /* 252 * Cancel watchdog timer. 253 */ 254 sc->sc_ethercom.ec_if.if_timer = 0; 255 } 256 257 void 258 esinit(struct es_softc *sc) 259 { 260 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 261 union smcregs *smc = sc->sc_base; 262 int s; 263 264 s = splnet(); 265 266 #ifdef ESDEBUG 267 if (ifp->if_flags & IFF_RUNNING) 268 es_dump_smcregs("esinit", smc); 269 #endif 270 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 271 smc->b0.rcr = RCR_EPH_RST; 272 smc->b0.rcr = 0; 273 smc->b3.bsr = BSR_BANK3; /* Select bank 3 */ 274 smc->b3.mt[0] = 0; /* clear Multicast table */ 275 smc->b3.mt[1] = 0; 276 smc->b3.mt[2] = 0; 277 smc->b3.mt[3] = 0; 278 /* XXX set Multicast table from Multicast list */ 279 smc->b1.bsr = BSR_BANK1; /* Select bank 1 */ 280 smc->b1.cr = CR_RAM32K | CR_NO_WAIT_ST | CR_SET_SQLCH; 281 smc->b1.ctr = CTR_AUTO_RLSE | CTR_TE_ENA; 282 smc->b1.iar[0] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[0]); 283 smc->b1.iar[1] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[2]); 284 smc->b1.iar[2] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[4]); 285 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 286 smc->b2.mmucr = MMUCR_RESET; 287 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 288 smc->b0.mcr = SWAP(0x0020); /* reserve 8K for transmit buffers */ 289 smc->b0.tcr = TCR_PAD_EN | (TCR_TXENA + TCR_MON_CSN); 290 smc->b0.rcr = RCR_FILT_CAR | RCR_STRIP_CRC | RCR_RXEN | RCR_ALLMUL; 291 /* XXX add promiscuous flags */ 292 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 293 smc->b2.msk = sc->sc_intctl = MSK_RX_OVRN | MSK_RX | MSK_EPHINT; 294 295 /* Interface is now 'running', with no output active. */ 296 ifp->if_flags |= IFF_RUNNING; 297 ifp->if_flags &= ~IFF_OACTIVE; 298 299 /* Attempt to start output, if any. */ 300 esstart(ifp); 301 302 splx(s); 303 } 304 305 int 306 esintr(void *arg) 307 { 308 struct es_softc *sc = arg; 309 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 310 u_short intsts, intact; 311 union smcregs *smc; 312 int s = splnet(); 313 314 smc = sc->sc_base; 315 #ifdef ESDEBUG 316 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2 && 317 ifp->if_flags & IFF_RUNNING) { 318 printf("%s: intr BSR not 2: %04x\n", device_xname(sc->sc_dev), 319 smc->b2.bsr); 320 smc->b2.bsr = BSR_BANK2; 321 } 322 #endif 323 intsts = smc->b2.ist; 324 intact = smc->b2.msk & intsts; 325 if ((intact) == 0) { 326 splx(s); 327 return (0); 328 } 329 #ifdef ESDEBUG 330 if (esdebug) 331 printf ("%s: esintr ist %02x msk %02x", 332 device_xname(sc->sc_dev), intsts, smc->b2.msk); 333 if (sc->sc_intbusy++) { 334 printf("%s: esintr re-entered\n", device_xname(sc->sc_dev)); 335 panic("esintr re-entered"); 336 } 337 if (sc->sc_smcbusy) 338 printf("%s: esintr interrupted busy %d\n", device_xname(sc->sc_dev), 339 sc->sc_smcbusy); 340 #endif 341 smc->b2.msk = 0; 342 #ifdef ESDEBUG 343 if (esdebug) 344 printf ("=>%02x%02x pnr %02x arr %02x fifo %04x\n", 345 smc->b2.ist, smc->b2.ist, smc->b2.pnr, smc->b2.arr, 346 smc->b2.fifo); 347 #endif 348 if (intact & IST_ALLOC) { 349 sc->sc_intctl &= ~MSK_ALLOC; 350 #ifdef ESDEBUG 351 if (esdebug || 1) 352 printf ("%s: ist %02x", device_xname(sc->sc_dev), 353 intsts); 354 #endif 355 if ((smc->b2.arr & ARR_FAILED) == 0) { 356 u_char save_pnr; 357 #ifdef ESDEBUG 358 if (esdebug || 1) 359 printf (" arr %02x\n", smc->b2.arr); 360 #endif 361 save_pnr = smc->b2.pnr; 362 smc->b2.pnr = smc->b2.arr; 363 smc->b2.mmucr = MMUCR_RLSPKT; 364 while (smc->b2.mmucr & MMUCR_BUSY) 365 ; 366 smc->b2.pnr = save_pnr; 367 ifp->if_flags &= ~IFF_OACTIVE; 368 ifp->if_timer = 0; 369 } 370 #ifdef ESDEBUG 371 else if (esdebug || 1) 372 printf (" IST_ALLOC with ARR_FAILED?\n"); 373 #endif 374 } 375 #ifdef ESDEBUG 376 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 377 printf("%s: intr+ BSR not 2: %04x\n", device_xname(sc->sc_dev), 378 smc->b2.bsr); 379 smc->b2.bsr = BSR_BANK2; 380 } 381 #endif 382 while ((smc->b2.fifo & FIFO_REMPTY) == 0) { 383 esrint(sc); 384 } 385 #ifdef ESDEBUG 386 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 387 printf("%s: intr++ BSR not 2: %04x\n", device_xname(sc->sc_dev), 388 smc->b2.bsr); 389 smc->b2.bsr = BSR_BANK2; 390 } 391 #endif 392 if (intact & IST_RX_OVRN) { 393 printf ("%s: Overrun ist %02x", device_xname(sc->sc_dev), 394 intsts); 395 smc->b2.ist = ACK_RX_OVRN; 396 printf ("->%02x\n", smc->b2.ist); 397 ifp->if_ierrors++; 398 } 399 if (intact & IST_TX_EMPTY) { 400 u_short ecr; 401 #ifdef ESDEBUG 402 if (esdebug) 403 printf ("%s: TX EMPTY %02x", 404 device_xname(sc->sc_dev), intsts); 405 ++estxint5; /* count # IST_TX_EMPTY ints */ 406 #endif 407 smc->b2.ist = ACK_TX_EMPTY; 408 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 409 ifp->if_timer = 0; 410 #ifdef ESDEBUG 411 if (esdebug) 412 printf ("->%02x intcl %x pnr %02x arr %02x\n", 413 smc->b2.ist, sc->sc_intctl, smc->b2.pnr, 414 smc->b2.arr); 415 #endif 416 if (smc->b2.ist & IST_TX) { 417 intact |= IST_TX; 418 #ifdef ESDEBUG 419 ++estxint2; /* count # TX after TX_EMPTY */ 420 #endif 421 } else { 422 smc->b0.bsr = BSR_BANK0; 423 ecr = smc->b0.ecr; /* Get error counters */ 424 if (ecr & 0xff00) 425 ifp->if_collisions += ((ecr >> 8) & 15) + 426 ((ecr >> 11) & 0x1e); 427 smc->b2.bsr = BSR_BANK2; 428 #if 0 429 smc->b2.mmucr = MMUCR_RESET_TX; /* XXX reset TX FIFO */ 430 #endif 431 } 432 } 433 if (intact & IST_TX) { 434 u_char tx_pnr, save_pnr; 435 u_short save_ptr, ephsr, tcr; 436 int n = 0; 437 #ifdef ESDEBUG 438 if (esdebug) { 439 printf ("%s: TX INT ist %02x", 440 device_xname(sc->sc_dev), intsts); 441 printf ("->%02x\n", smc->b2.ist); 442 } 443 ++estxint3; /* count # IST_TX */ 444 #endif 445 zzzz: 446 #ifdef ESDEBUG 447 ++estxint4; /* count # ~TEMPTY */ 448 #endif 449 smc->b0.bsr = BSR_BANK0; 450 ephsr = smc->b0.ephsr; /* get EPHSR */ 451 __USE(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 device_xname(sc->sc_dev), 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 successful. Since 484 * AutoRelease is being used, a successful 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 device_xname(sc->sc_dev), 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", device_xname(sc->sc_dev), 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", device_xname(sc->sc_dev)); 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", device_xname(sc->sc_dev), 565 smc->b2.fifo); 566 if (sc->sc_smcbusy++) { 567 printf("%s: esrint re-entered\n", device_xname(sc->sc_dev)); 568 panic("esrint re-entered"); 569 } 570 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 571 printf("%s: rint BSR not 2: %04x\n", device_xname(sc->sc_dev), 572 smc->b2.bsr); 573 smc->b2.bsr = BSR_BANK2; 574 } 575 #endif 576 data = (volatile 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 device_xname(sc->sc_dev), 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 device_xname(sc->sc_dev)); 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", device_xname(sc->sc_dev), 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", device_xname(sc->sc_dev), 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 memcpy(mtod(m, void *), (void *)b, 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 /* 725 * Check if there's a BPF listener on this interface. If so, hand off 726 * the raw packet to bpf. 727 */ 728 bpf_mtap(ifp, top); 729 (*ifp->if_input)(ifp, top); 730 #ifdef ESDEBUG 731 if (--sc->sc_smcbusy) { 732 printf("%s: esintr busy on exit\n", device_xname(sc->sc_dev)); 733 panic("esintr busy on exit"); 734 } 735 #endif 736 } 737 738 void 739 estint(struct es_softc *sc) 740 { 741 742 esstart(&sc->sc_ethercom.ec_if); 743 } 744 745 void 746 esstart(struct ifnet *ifp) 747 { 748 struct es_softc *sc = ifp->if_softc; 749 union smcregs *smc = sc->sc_base; 750 struct mbuf *m0, *m; 751 #ifdef USEPKTBUF 752 u_short pktbuf[ETHERMTU + 2]; 753 #else 754 u_short oddbyte, needbyte; 755 #endif 756 u_short pktctlw, pktlen; 757 u_short *buf; 758 volatile u_short *data; 759 #if 0 760 u_long *lbuf; 761 volatile u_long *ldata; 762 #endif 763 short cnt; 764 int i; 765 u_char active_pnr; 766 767 if ((sc->sc_ethercom.ec_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) != 768 IFF_RUNNING) 769 return; 770 771 #ifdef ESDEBUG 772 if (sc->sc_smcbusy++) { 773 printf("%s: esstart re-entered\n", device_xname(sc->sc_dev)); 774 panic("esstart re-entred"); 775 } 776 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 777 printf("%s: esstart BSR not 2: %04x\n", device_xname(sc->sc_dev), 778 smc->b2.bsr); 779 smc->b2.bsr = BSR_BANK2; 780 } 781 #endif 782 for (;;) { 783 #ifdef ESDEBUG 784 u_short start_ptr, end_ptr; 785 #endif 786 /* 787 * Sneak a peek at the next packet to get the length 788 * and see if the SMC 91C90 can accept it. 789 */ 790 m = sc->sc_ethercom.ec_if.if_snd.ifq_head; 791 if (!m) 792 break; 793 #ifdef ESDEBUG 794 if (esdebug && (m->m_next || m->m_len & 1)) 795 printf("%s: esstart m_next %p m_len %d\n", 796 device_xname(sc->sc_dev), m->m_next, m->m_len); 797 #endif 798 for (m0 = m, pktlen = 0; m0; m0 = m0->m_next) 799 pktlen += m0->m_len; 800 pktctlw = 0; 801 pktlen += 4; 802 if (pktlen & 1) 803 ++pktlen; /* control byte after last byte */ 804 else 805 pktlen += 2; /* control byte after pad byte */ 806 smc->b2.mmucr = MMUCR_ALLOC | (pktlen & 0x0700); 807 for (i = 0; i <= 5; ++i) 808 if ((smc->b2.arr & ARR_FAILED) == 0) 809 break; 810 if (smc->b2.arr & ARR_FAILED) { 811 sc->sc_ethercom.ec_if.if_flags |= IFF_OACTIVE; 812 sc->sc_intctl |= MSK_ALLOC; 813 sc->sc_ethercom.ec_if.if_timer = 5; 814 break; 815 } 816 active_pnr = smc->b2.pnr = smc->b2.arr; 817 818 #ifdef ESDEBUG 819 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 820 printf("%s: esstart+ BSR not 2: %04x\n", device_xname(sc->sc_dev), 821 smc->b2.bsr); 822 smc->b2.bsr = BSR_BANK2; 823 } 824 #endif 825 IF_DEQUEUE(&sc->sc_ethercom.ec_if.if_snd, m); 826 smc->b2.ptr = PTR_AUTOINCR; 827 (void) smc->b2.mmucr; 828 data = (volatile u_short *)&smc->b2.data; 829 *data = SWAP(pktctlw); 830 *data = SWAP(pktlen); 831 #ifdef ESDEBUG 832 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 833 printf("%s: esstart++ BSR not 2: %04x\n", device_xname(sc->sc_dev), 834 smc->b2.bsr); 835 smc->b2.bsr = BSR_BANK2; 836 } 837 #endif 838 #ifdef USEPKTBUF 839 i = 0; 840 for (m0 = m; m; m = m->m_next) { 841 memcpy((char *)pktbuf + i, mtod(m, void *), m->m_len); 842 i += m->m_len; 843 } 844 845 if (i & 1) /* Figure out where to put control byte */ 846 pktbuf[i/2] = (pktbuf[i/2] & 0xff00) | CTLB_ODD; 847 else 848 pktbuf[i/2] = 0; 849 pktlen -= 4; 850 #ifdef ESDEBUG 851 if (pktlen > sizeof(pktbuf) && i > (sizeof(pktbuf) * 2)) 852 printf("%s: esstart packet longer than pktbuf\n", 853 device_xname(sc->sc_dev)); 854 #endif 855 #if 0 /* doesn't quite work? */ 856 lbuf = (u_long *)(pktbuf); 857 ldata = (u_long *)data; 858 cnt = pktlen / 4; 859 while(cnt--) 860 *ldata = *lbuf++; 861 if (pktlen & 2) { 862 buf = (u_short *)lbuf; 863 *data = *buf; 864 } 865 #else 866 #ifdef ESDEBUG 867 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 868 printf("%s: esstart++2 BSR not 2: %04x\n", device_xname(sc->sc_dev), 869 smc->b2.bsr); 870 smc->b2.bsr = BSR_BANK2; 871 } 872 start_ptr = SWAP(smc->b2.ptr); /* save PTR before copy */ 873 #endif 874 buf = pktbuf; 875 cnt = pktlen / 2; 876 while (cnt--) 877 *data = *buf++; 878 #ifdef ESDEBUG 879 end_ptr = SWAP(smc->b2.ptr); /* save PTR after copy */ 880 #endif 881 #endif 882 #else /* USEPKTBUF */ 883 pktctlw = 0; 884 oddbyte = needbyte = 0; 885 for (m0 = m; m; m = m->m_next) { 886 buf = mtod(m, u_short *); 887 cnt = m->m_len / 2; 888 if (needbyte) { 889 oddbyte |= *buf >> 8; 890 *data = oddbyte; 891 } 892 while (cnt--) 893 *data = *buf++; 894 if (m->m_len & 1) 895 pktctlw = (*buf & 0xff00) | CTLB_ODD; 896 if (m->m_len & 1 && m->m_next) 897 printf("%s: esstart odd byte count in mbuf\n", 898 device_xname(sc->sc_dev)); 899 } 900 *data = pktctlw; 901 #endif /* USEPKTBUF */ 902 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 903 /* 904 * The bank select register has changed. This seems 905 * to happen with my A2000/Zeus once in a while. It 906 * appears that the Ethernet chip resets while 907 * copying the transmit buffer. Requeue the current 908 * transmit buffer and reinitialize the interface. 909 * The initialize routine will take care of 910 * retransmitting the buffer. mhitch 911 */ 912 #ifdef DIAGNOSTIC 913 printf("%s: esstart+++ BSR not 2: %04x\n", 914 device_xname(sc->sc_dev), smc->b2.bsr); 915 #endif 916 smc->b2.bsr = BSR_BANK2; 917 #ifdef ESDEBUG 918 printf("start_ptr %04x end_ptr %04x cur ptr %04x\n", 919 start_ptr, end_ptr, SWAP(smc->b2.ptr)); 920 --sc->sc_smcbusy; 921 #endif 922 IF_PREPEND(&sc->sc_ethercom.ec_if.if_snd, m0); 923 esinit(sc); /* It's really hosed - reset */ 924 return; 925 } 926 smc->b2.mmucr = MMUCR_ENQ_TX; 927 if (smc->b2.pnr != active_pnr) 928 printf("%s: esstart - PNR changed %x->%x\n", 929 device_xname(sc->sc_dev), active_pnr, smc->b2.pnr); 930 bpf_mtap(&sc->sc_ethercom.ec_if, m0); 931 m_freem(m0); 932 sc->sc_ethercom.ec_if.if_opackets++; /* move to interrupt? */ 933 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 934 sc->sc_ethercom.ec_if.if_timer = 5; 935 } 936 smc->b2.msk = sc->sc_intctl; 937 #ifdef ESDEBUG 938 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 939 printf("%s: esstart++++ BSR not 2: %04x\n", device_xname(sc->sc_dev), 940 smc->b2.bsr); 941 smc->b2.bsr = BSR_BANK2; 942 } 943 if (--sc->sc_smcbusy) { 944 printf("%s: esstart busy on exit\n", device_xname(sc->sc_dev)); 945 panic("esstart busy on exit"); 946 } 947 #endif 948 } 949 950 int 951 esioctl(struct ifnet *ifp, u_long cmd, void *data) 952 { 953 struct es_softc *sc = ifp->if_softc; 954 register struct ifaddr *ifa = (struct ifaddr *)data; 955 struct ifreq *ifr = (struct ifreq *)data; 956 int s, error = 0; 957 958 s = splnet(); 959 960 switch (cmd) { 961 962 case SIOCINITIFADDR: 963 ifp->if_flags |= IFF_UP; 964 965 switch (ifa->ifa_addr->sa_family) { 966 #ifdef INET 967 case AF_INET: 968 esinit(sc); 969 arp_ifinit(ifp, ifa); 970 break; 971 #endif 972 #ifdef NS 973 case AF_NS: 974 { 975 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 976 977 if (ns_nullhost(*ina)) 978 ina->x_host = 979 *(union ns_host *)LLADDR(ifp->if_sadl); 980 else 981 bcopy(ina->x_host.c_host, 982 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 983 /* Set new address. */ 984 esinit(sc); 985 break; 986 } 987 #endif 988 default: 989 esinit(sc); 990 break; 991 } 992 break; 993 994 case SIOCSIFFLAGS: 995 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 996 break; 997 /* XXX see the comment in ed_ioctl() about code re-use */ 998 /* 999 * If interface is marked down and it is running, then stop it 1000 */ 1001 if ((ifp->if_flags & IFF_UP) == 0 && 1002 (ifp->if_flags & IFF_RUNNING) != 0) { 1003 /* 1004 * If interface is marked down and it is running, then 1005 * stop it. 1006 */ 1007 esstop(sc); 1008 ifp->if_flags &= ~IFF_RUNNING; 1009 } else if ((ifp->if_flags & IFF_UP) != 0 && 1010 (ifp->if_flags & IFF_RUNNING) == 0) { 1011 /* 1012 * If interface is marked up and it is stopped, then 1013 * start it. 1014 */ 1015 esinit(sc); 1016 } else { 1017 /* 1018 * Reset the interface to pick up changes in any other 1019 * flags that affect hardware registers. 1020 */ 1021 esstop(sc); 1022 esinit(sc); 1023 } 1024 #ifdef ESDEBUG 1025 if (ifp->if_flags & IFF_DEBUG) 1026 esdebug = sc->sc_debug = 1; 1027 else 1028 esdebug = sc->sc_debug = 0; 1029 #endif 1030 break; 1031 1032 case SIOCADDMULTI: 1033 case SIOCDELMULTI: 1034 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1035 /* 1036 * Multicast list has changed; set the hardware filter 1037 * accordingly. 1038 */ 1039 if (ifp->if_flags & IFF_RUNNING) { 1040 /* XXX */ 1041 } 1042 error = 0; 1043 } 1044 break; 1045 1046 case SIOCGIFMEDIA: 1047 case SIOCSIFMEDIA: 1048 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1049 break; 1050 1051 default: 1052 error = ether_ioctl(ifp, cmd, data); 1053 break; 1054 } 1055 1056 splx(s); 1057 return (error); 1058 } 1059 1060 /* 1061 * Reset the interface. 1062 */ 1063 void 1064 esreset(struct es_softc *sc) 1065 { 1066 int s; 1067 1068 s = splnet(); 1069 esstop(sc); 1070 esinit(sc); 1071 splx(s); 1072 } 1073 1074 void 1075 eswatchdog(struct ifnet *ifp) 1076 { 1077 struct es_softc *sc = ifp->if_softc; 1078 1079 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 1080 ++ifp->if_oerrors; 1081 1082 esreset(sc); 1083 } 1084 1085 int 1086 esmediachange(struct ifnet *ifp) 1087 { 1088 return 0; 1089 } 1090 1091 void 1092 esmediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1093 { 1094 } 1095
Indexes created Thu Oct 02 01:09:59 GMT 2025