if_es.c revision 1.54
1 /* $NetBSD: if_es.c,v 1.54 2016/02/09 08:32:07 ozaki-r 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 1.54 2016/02/09 08:32:07 ozaki-r 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 #include <machine/cpu.h> 64 #include <amiga/amiga/device.h> 65 #include <amiga/amiga/isr.h> 66 #include <amiga/dev/zbusvar.h> 67 #include <amiga/dev/if_esreg.h> 68 69 #define SWAP(x) (((x & 0xff) << 8) | ((x >> 8) & 0xff)) 70 71 #define USEPKTBUF 72 73 /* 74 * Ethernet software status per interface. 75 * 76 * Each interface is referenced by a network interface structure, 77 * es_if, which the routing code uses to locate the interface. 78 * This structure contains the output queue for the interface, its address, ... 79 */ 80 struct es_softc { 81 device_t sc_dev; 82 struct isr sc_isr; 83 struct ethercom sc_ethercom; /* common Ethernet structures */ 84 struct ifmedia sc_media; /* our supported media */ 85 void *sc_base; /* base address of board */ 86 short sc_iflags; 87 unsigned short sc_intctl; 88 #ifdef ESDEBUG 89 int sc_debug; 90 short sc_intbusy; /* counter for interrupt rentered */ 91 short sc_smcbusy; /* counter for other rentry checks */ 92 #endif 93 }; 94 95 #include <net/bpf.h> 96 #include <net/bpfdesc.h> 97 98 #ifdef ESDEBUG 99 /* console error messages */ 100 int esdebug = 0; 101 int estxints = 0; /* IST_TX with TX enabled */ 102 int estxint2 = 0; /* IST_TX active after IST_TX_EMPTY */ 103 int estxint3 = 0; /* IST_TX interrupt processed */ 104 int estxint4 = 0; /* ~TEMPTY counts */ 105 int estxint5 = 0; /* IST_TX_EMPTY interrupts */ 106 void es_dump_smcregs(char *, union smcregs *); 107 #endif 108 109 int esintr(void *); 110 void esstart(struct ifnet *); 111 void eswatchdog(struct ifnet *); 112 int esioctl(struct ifnet *, u_long, void *); 113 void esrint(struct es_softc *); 114 void estint(struct es_softc *); 115 void esinit(struct es_softc *); 116 void esreset(struct es_softc *); 117 void esstop(struct es_softc *); 118 int esmediachange(struct ifnet *); 119 void esmediastatus(struct ifnet *, struct ifmediareq *); 120 121 int esmatch(device_t, cfdata_t, void *); 122 void esattach(device_t, device_t, void *); 123 124 CFATTACH_DECL_NEW(es, sizeof(struct es_softc), 125 esmatch, esattach, NULL, NULL); 126 127 int 128 esmatch(device_t parent, cfdata_t cf, void *aux) 129 { 130 struct zbus_args *zap = aux; 131 132 /* Ameristar A4066 ethernet card */ 133 if (zap->manid == 1053 && zap->prodid == 10) 134 return(1); 135 136 return (0); 137 } 138 139 /* 140 * Interface exists: make available by filling in network interface 141 * record. System will initialize the interface when it is ready 142 * to accept packets. 143 */ 144 void 145 esattach(device_t parent, device_t self, void *aux) 146 { 147 struct es_softc *sc = device_private(self); 148 struct zbus_args *zap = aux; 149 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 150 unsigned long ser; 151 u_int8_t myaddr[ETHER_ADDR_LEN]; 152 153 sc->sc_dev = self; 154 sc->sc_base = zap->va; 155 156 /* 157 * Manufacturer decides the 3 first bytes, i.e. ethernet vendor ID. 158 * (Currently only Ameristar.) 159 */ 160 myaddr[0] = 0x00; 161 myaddr[1] = 0x00; 162 myaddr[2] = 0x9f; 163 164 /* 165 * Serial number for board contains last 3 bytes. 166 */ 167 ser = (unsigned long) zap->serno; 168 169 myaddr[3] = (ser >> 16) & 0xff; 170 myaddr[4] = (ser >> 8) & 0xff; 171 myaddr[5] = (ser ) & 0xff; 172 173 /* Initialize ifnet structure. */ 174 memcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 175 ifp->if_softc = sc; 176 ifp->if_ioctl = esioctl; 177 ifp->if_start = esstart; 178 ifp->if_watchdog = eswatchdog; 179 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | 180 IFF_MULTICAST; 181 182 ifmedia_init(&sc->sc_media, 0, esmediachange, esmediastatus); 183 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 184 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 185 186 /* Attach the interface. */ 187 if_attach(ifp); 188 ether_ifattach(ifp, myaddr); 189 190 /* Print additional info when attached. */ 191 printf(": address %s\n", ether_sprintf(myaddr)); 192 193 sc->sc_isr.isr_intr = esintr; 194 sc->sc_isr.isr_arg = sc; 195 sc->sc_isr.isr_ipl = 2; 196 add_isr(&sc->sc_isr); 197 } 198 199 #ifdef ESDEBUG 200 void 201 es_dump_smcregs(char *where, union smcregs *smc) 202 { 203 u_short cur_bank = smc->b0.bsr & BSR_MASK; 204 205 printf("SMC registers %p from %s bank %04x\n", smc, where, 206 smc->b0.bsr); 207 smc->b0.bsr = BSR_BANK0; 208 printf("TCR %04x EPHSR %04x RCR %04x ECR %04x MIR %04x MCR %04x\n", 209 SWAP(smc->b0.tcr), SWAP(smc->b0.ephsr), SWAP(smc->b0.rcr), 210 SWAP(smc->b0.ecr), SWAP(smc->b0.mir), SWAP(smc->b0.mcr)); 211 smc->b1.bsr = BSR_BANK1; 212 printf("CR %04x BAR %04x IAR %04x %04x %04x GPR %04x CTR %04x\n", 213 SWAP(smc->b1.cr), SWAP(smc->b1.bar), smc->b1.iar[0], smc->b1.iar[1], 214 smc->b1.iar[2], smc->b1.gpr, SWAP(smc->b1.ctr)); 215 smc->b2.bsr = BSR_BANK2; 216 printf("MMUCR %04x PNR %02x ARR %02x FIFO %04x PTR %04x", 217 SWAP(smc->b2.mmucr), smc->b2.pnr, smc->b2.arr, smc->b2.fifo, 218 SWAP(smc->b2.ptr)); 219 printf(" DATA %04x %04x IST %02x MSK %02x\n", smc->b2.data, 220 smc->b2.datax, smc->b2.ist, smc->b2.msk); 221 smc->b3.bsr = BSR_BANK3; 222 printf("MT %04x %04x %04x %04x\n", 223 smc->b3.mt[0], smc->b3.mt[1], smc->b3.mt[2], smc->b3.mt[3]); 224 smc->b3.bsr = cur_bank; 225 } 226 #endif 227 228 void 229 esstop(struct es_softc *sc) 230 { 231 union smcregs *smc = sc->sc_base; 232 233 /* 234 * Clear interrupt mask; disable all interrupts. 235 */ 236 smc->b2.bsr = BSR_BANK2; 237 smc->b2.msk = 0; 238 239 /* 240 * Disable transmitter and receiver. 241 */ 242 smc->b0.bsr = BSR_BANK0; 243 smc->b0.rcr = 0; 244 smc->b0.tcr = 0; 245 246 /* 247 * Cancel watchdog timer. 248 */ 249 sc->sc_ethercom.ec_if.if_timer = 0; 250 } 251 252 void 253 esinit(struct es_softc *sc) 254 { 255 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 256 union smcregs *smc = sc->sc_base; 257 int s; 258 259 s = splnet(); 260 261 #ifdef ESDEBUG 262 if (ifp->if_flags & IFF_RUNNING) 263 es_dump_smcregs("esinit", smc); 264 #endif 265 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 266 smc->b0.rcr = RCR_EPH_RST; 267 smc->b0.rcr = 0; 268 smc->b3.bsr = BSR_BANK3; /* Select bank 3 */ 269 smc->b3.mt[0] = 0; /* clear Multicast table */ 270 smc->b3.mt[1] = 0; 271 smc->b3.mt[2] = 0; 272 smc->b3.mt[3] = 0; 273 /* XXX set Multicast table from Multicast list */ 274 smc->b1.bsr = BSR_BANK1; /* Select bank 1 */ 275 smc->b1.cr = CR_RAM32K | CR_NO_WAIT_ST | CR_SET_SQLCH; 276 smc->b1.ctr = CTR_AUTO_RLSE | CTR_TE_ENA; 277 smc->b1.iar[0] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[0]); 278 smc->b1.iar[1] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[2]); 279 smc->b1.iar[2] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[4]); 280 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 281 smc->b2.mmucr = MMUCR_RESET; 282 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 283 smc->b0.mcr = SWAP(0x0020); /* reserve 8K for transmit buffers */ 284 smc->b0.tcr = TCR_PAD_EN | (TCR_TXENA + TCR_MON_CSN); 285 smc->b0.rcr = RCR_FILT_CAR | RCR_STRIP_CRC | RCR_RXEN | RCR_ALLMUL; 286 /* XXX add promiscuous flags */ 287 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 288 smc->b2.msk = sc->sc_intctl = MSK_RX_OVRN | MSK_RX | MSK_EPHINT; 289 290 /* Interface is now 'running', with no output active. */ 291 ifp->if_flags |= IFF_RUNNING; 292 ifp->if_flags &= ~IFF_OACTIVE; 293 294 /* Attempt to start output, if any. */ 295 esstart(ifp); 296 297 splx(s); 298 } 299 300 int 301 esintr(void *arg) 302 { 303 struct es_softc *sc = arg; 304 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 305 u_short intsts, intact; 306 union smcregs *smc; 307 int s = splnet(); 308 309 smc = sc->sc_base; 310 #ifdef ESDEBUG 311 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2 && 312 ifp->if_flags & IFF_RUNNING) { 313 printf("%s: intr BSR not 2: %04x\n", device_xname(sc->sc_dev), 314 smc->b2.bsr); 315 smc->b2.bsr = BSR_BANK2; 316 } 317 #endif 318 intsts = smc->b2.ist; 319 intact = smc->b2.msk & intsts; 320 if ((intact) == 0) { 321 splx(s); 322 return (0); 323 } 324 #ifdef ESDEBUG 325 if (esdebug) 326 printf ("%s: esintr ist %02x msk %02x", 327 device_xname(sc->sc_dev), intsts, smc->b2.msk); 328 if (sc->sc_intbusy++) { 329 printf("%s: esintr re-entered\n", device_xname(sc->sc_dev)); 330 panic("esintr re-entered"); 331 } 332 if (sc->sc_smcbusy) 333 printf("%s: esintr interrupted busy %d\n", device_xname(sc->sc_dev), 334 sc->sc_smcbusy); 335 #endif 336 smc->b2.msk = 0; 337 #ifdef ESDEBUG 338 if (esdebug) 339 printf ("=>%02x%02x pnr %02x arr %02x fifo %04x\n", 340 smc->b2.ist, smc->b2.ist, smc->b2.pnr, smc->b2.arr, 341 smc->b2.fifo); 342 #endif 343 if (intact & IST_ALLOC) { 344 sc->sc_intctl &= ~MSK_ALLOC; 345 #ifdef ESDEBUG 346 if (esdebug || 1) 347 printf ("%s: ist %02x", device_xname(sc->sc_dev), 348 intsts); 349 #endif 350 if ((smc->b2.arr & ARR_FAILED) == 0) { 351 u_char save_pnr; 352 #ifdef ESDEBUG 353 if (esdebug || 1) 354 printf (" arr %02x\n", smc->b2.arr); 355 #endif 356 save_pnr = smc->b2.pnr; 357 smc->b2.pnr = smc->b2.arr; 358 smc->b2.mmucr = MMUCR_RLSPKT; 359 while (smc->b2.mmucr & MMUCR_BUSY) 360 ; 361 smc->b2.pnr = save_pnr; 362 ifp->if_flags &= ~IFF_OACTIVE; 363 ifp->if_timer = 0; 364 } 365 #ifdef ESDEBUG 366 else if (esdebug || 1) 367 printf (" IST_ALLOC with ARR_FAILED?\n"); 368 #endif 369 } 370 #ifdef ESDEBUG 371 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 372 printf("%s: intr+ BSR not 2: %04x\n", device_xname(sc->sc_dev), 373 smc->b2.bsr); 374 smc->b2.bsr = BSR_BANK2; 375 } 376 #endif 377 while ((smc->b2.fifo & FIFO_REMPTY) == 0) { 378 esrint(sc); 379 } 380 #ifdef ESDEBUG 381 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 382 printf("%s: intr++ BSR not 2: %04x\n", device_xname(sc->sc_dev), 383 smc->b2.bsr); 384 smc->b2.bsr = BSR_BANK2; 385 } 386 #endif 387 if (intact & IST_RX_OVRN) { 388 printf ("%s: Overrun ist %02x", device_xname(sc->sc_dev), 389 intsts); 390 smc->b2.ist = ACK_RX_OVRN; 391 printf ("->%02x\n", smc->b2.ist); 392 ifp->if_ierrors++; 393 } 394 if (intact & IST_TX_EMPTY) { 395 u_short ecr; 396 #ifdef ESDEBUG 397 if (esdebug) 398 printf ("%s: TX EMPTY %02x", 399 device_xname(sc->sc_dev), intsts); 400 ++estxint5; /* count # IST_TX_EMPTY ints */ 401 #endif 402 smc->b2.ist = ACK_TX_EMPTY; 403 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 404 ifp->if_timer = 0; 405 #ifdef ESDEBUG 406 if (esdebug) 407 printf ("->%02x intcl %x pnr %02x arr %02x\n", 408 smc->b2.ist, sc->sc_intctl, smc->b2.pnr, 409 smc->b2.arr); 410 #endif 411 if (smc->b2.ist & IST_TX) { 412 intact |= IST_TX; 413 #ifdef ESDEBUG 414 ++estxint2; /* count # TX after TX_EMPTY */ 415 #endif 416 } else { 417 smc->b0.bsr = BSR_BANK0; 418 ecr = smc->b0.ecr; /* Get error counters */ 419 if (ecr & 0xff00) 420 ifp->if_collisions += ((ecr >> 8) & 15) + 421 ((ecr >> 11) & 0x1e); 422 smc->b2.bsr = BSR_BANK2; 423 #if 0 424 smc->b2.mmucr = MMUCR_RESET_TX; /* XXX reset TX FIFO */ 425 #endif 426 } 427 } 428 if (intact & IST_TX) { 429 u_char tx_pnr, save_pnr; 430 u_short save_ptr, ephsr, tcr; 431 int n = 0; 432 #ifdef ESDEBUG 433 if (esdebug) { 434 printf ("%s: TX INT ist %02x", 435 device_xname(sc->sc_dev), intsts); 436 printf ("->%02x\n", smc->b2.ist); 437 } 438 ++estxint3; /* count # IST_TX */ 439 #endif 440 zzzz: 441 #ifdef ESDEBUG 442 ++estxint4; /* count # ~TEMPTY */ 443 #endif 444 smc->b0.bsr = BSR_BANK0; 445 ephsr = smc->b0.ephsr; /* get EPHSR */ 446 __USE(ephsr); 447 tcr = smc->b0.tcr; /* and TCR */ 448 smc->b2.bsr = BSR_BANK2; 449 save_ptr = smc->b2.ptr; 450 save_pnr = smc->b2.pnr; 451 tx_pnr = smc->b2.fifo >> 8; /* pktno from completion fifo */ 452 smc->b2.pnr = tx_pnr; /* set TX packet number */ 453 smc->b2.ptr = PTR_READ; /* point to status word */ 454 #if 0 /* XXXX */ 455 printf("%s: esintr TXINT IST %02x PNR %02x(%d)", 456 device_xname(sc->sc_dev), smc->b2.ist, 457 tx_pnr, n); 458 printf(" Status %04x", smc->b2.data); 459 printf(" EPHSR %04x\n", ephsr); 460 #endif 461 if ((smc->b2.data & EPHSR_TX_SUC) == 0 && (tcr & TCR_TXENA) == 0) { 462 /* 463 * Transmitter was stopped for some error. Enqueue 464 * the packet again and restart the transmitter. 465 * May need some check to limit the number of retries. 466 */ 467 smc->b2.mmucr = MMUCR_ENQ_TX; 468 smc->b0.bsr = BSR_BANK0; 469 smc->b0.tcr |= TCR_TXENA; 470 smc->b2.bsr = BSR_BANK2; 471 ifp->if_oerrors++; 472 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 473 } else { 474 /* 475 * This shouldn't have happened: IST_TX indicates 476 * the TX completion FIFO is not empty, but the 477 * status for the packet on the completion FIFO 478 * shows that the transmit was successful. Since 479 * AutoRelease is being used, a successful transmit 480 * should not result in a packet on the completion 481 * FIFO. Also, that packet doesn't seem to want 482 * to be acknowledged. If this occurs, just reset 483 * the TX FIFOs. 484 */ 485 #if 1 486 if (smc->b2.ist & IST_TX_EMPTY) { 487 smc->b2.mmucr = MMUCR_RESET_TX; 488 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 489 ifp->if_timer = 0; 490 } 491 #endif 492 #ifdef ESDEBUG 493 ++estxints; /* count IST_TX with TX enabled */ 494 #endif 495 } 496 smc->b2.pnr = save_pnr; 497 smc->b2.ptr = save_ptr; 498 smc->b2.ist = ACK_TX; 499 500 if ((smc->b2.fifo & FIFO_TEMPTY) == 0 && n++ < 32) { 501 #if 0 /* XXXX */ 502 printf("%s: multiple TX int(%2d) pnr %02x ist %02x fifo %04x", 503 device_xname(sc->sc_dev), n, tx_pnr, smc->b2.ist, smc->b2.fifo); 504 smc->w2.istmsk = ACK_TX << 8; 505 printf(" %04x\n", smc->b2.fifo); 506 #endif 507 if (tx_pnr != (smc->b2.fifo >> 8)) 508 goto zzzz; 509 } 510 } 511 if (intact & IST_EPHINT) { 512 ifp->if_oerrors++; 513 esreset(sc); 514 } 515 /* output packets */ 516 estint(sc); 517 #ifdef ESDEBUG 518 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 519 printf("%s: intr+++ BSR not 2: %04x\n", device_xname(sc->sc_dev), 520 smc->b2.bsr); 521 smc->b2.bsr = BSR_BANK2; 522 } 523 #endif 524 smc->b2.msk = sc->sc_intctl; 525 #ifdef ESDEBUG 526 if (--sc->sc_intbusy) { 527 printf("%s: esintr busy on exit\n", device_xname(sc->sc_dev)); 528 panic("esintr busy on exit"); 529 } 530 #endif 531 splx(s); 532 return (1); 533 } 534 535 void 536 esrint(struct es_softc *sc) 537 { 538 union smcregs *smc = sc->sc_base; 539 u_short len; 540 short cnt; 541 u_short pktctlw, pktlen, *buf; 542 volatile u_short *data; 543 #if 0 544 u_long *lbuf; 545 volatile u_long *ldata; 546 #endif 547 struct ifnet *ifp; 548 struct mbuf *top, **mp, *m; 549 #ifdef USEPKTBUF 550 u_char *b, pktbuf[1530]; 551 #endif 552 #ifdef ESDEBUG 553 int i; 554 #endif 555 556 ifp = &sc->sc_ethercom.ec_if; 557 #ifdef ESDEBUG 558 if (esdebug) 559 printf ("%s: esrint fifo %04x", device_xname(sc->sc_dev), 560 smc->b2.fifo); 561 if (sc->sc_smcbusy++) { 562 printf("%s: esrint re-entered\n", device_xname(sc->sc_dev)); 563 panic("esrint re-entered"); 564 } 565 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 566 printf("%s: rint BSR not 2: %04x\n", device_xname(sc->sc_dev), 567 smc->b2.bsr); 568 smc->b2.bsr = BSR_BANK2; 569 } 570 #endif 571 data = (volatile u_short *)&smc->b2.data; 572 smc->b2.ptr = PTR_RCV | PTR_AUTOINCR | PTR_READ | SWAP(0x0002); 573 (void) smc->b2.mmucr; 574 #ifdef ESDEBUG 575 if (esdebug) 576 printf ("->%04x", smc->b2.fifo); 577 #endif 578 len = *data; 579 len = SWAP(len); /* Careful of macro side-effects */ 580 #ifdef ESDEBUG 581 if (esdebug) 582 printf (" length %d", len); 583 #endif 584 smc->b2.ptr = PTR_RCV | (PTR_AUTOINCR + PTR_READ) | SWAP(0x0000); 585 (void) smc->b2.mmucr; 586 pktctlw = *data; 587 pktlen = *data; 588 pktctlw = SWAP(pktctlw); 589 pktlen = SWAP(pktlen) - 6; 590 if (pktctlw & RFSW_ODDFRM) 591 pktlen++; 592 if (len > 1530) { 593 printf("%s: Corrupted packet length-sts %04x bytcnt %04x len %04x bank %04x\n", 594 device_xname(sc->sc_dev), pktctlw, pktlen, len, smc->b2.bsr); 595 /* XXX ignore packet, or just truncate? */ 596 #if defined(ESDEBUG) && defined(DDB) 597 if ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) 598 Debugger(); 599 #endif 600 smc->b2.bsr = BSR_BANK2; 601 smc->b2.mmucr = MMUCR_REMRLS_RX; 602 while (smc->b2.mmucr & MMUCR_BUSY) 603 ; 604 ++ifp->if_ierrors; 605 #ifdef ESDEBUG 606 if (--sc->sc_smcbusy) { 607 printf("%s: esrintr busy on bad packet exit\n", 608 device_xname(sc->sc_dev)); 609 panic("esrintr busy on exit"); 610 } 611 #endif 612 return; 613 } 614 #ifdef USEPKTBUF 615 #if 0 616 lbuf = (u_long *) pktbuf; 617 ldata = (u_long *)data; 618 cnt = (len - 4) / 4; 619 while (cnt--) 620 *lbuf++ = *ldata; 621 if ((len - 4) & 2) { 622 buf = (u_short *) lbuf; 623 *buf = *data; 624 } 625 #else 626 buf = (u_short *)pktbuf; 627 cnt = (len - 4) / 2; 628 while (cnt--) 629 *buf++ = *data; 630 #endif 631 smc->b2.mmucr = MMUCR_REMRLS_RX; 632 while (smc->b2.mmucr & MMUCR_BUSY) 633 ; 634 #ifdef ESDEBUG 635 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 636 printf ("%s: Packet error %04x\n", device_xname(sc->sc_dev), pktctlw); 637 /* count input error? */ 638 } 639 if (esdebug) { 640 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 641 smc->b2.fifo); 642 for (i = 0; i < pktlen; ++i) 643 printf ("%02x%s", pktbuf[i], ((i & 31) == 31) ? "\n" : 644 ""); 645 if (i & 31) 646 printf ("\n"); 647 } 648 #endif 649 #else /* USEPKTBUF */ 650 /* XXX copy directly from controller to mbuf */ 651 #ifdef ESDEBUG 652 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 653 printf ("%s: Packet error %04x\n", device_xname(sc->sc_dev), pktctlw); 654 /* count input error? */ 655 } 656 if (esdebug) { 657 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 658 smc->b2.fifo); 659 } 660 #endif 661 #endif /* USEPKTBUF */ 662 ifp->if_ipackets++; 663 MGETHDR(m, M_DONTWAIT, MT_DATA); 664 if (m == NULL) 665 return; 666 m->m_pkthdr.rcvif = ifp; 667 m->m_pkthdr.len = pktlen; 668 len = MHLEN; 669 top = NULL; 670 mp = ⊤ 671 #ifdef USEPKTBUF 672 b = pktbuf; 673 #endif 674 while (pktlen > 0) { 675 if (top) { 676 MGET(m, M_DONTWAIT, MT_DATA); 677 if (m == 0) { 678 m_freem(top); 679 return; 680 } 681 len = MLEN; 682 } 683 if (pktlen >= MINCLSIZE) { 684 MCLGET(m, M_DONTWAIT); 685 if (m->m_flags & M_EXT) 686 len = MCLBYTES; 687 } 688 m->m_len = len = min(pktlen, len); 689 #ifdef USEPKTBUF 690 memcpy(mtod(m, void *), (void *)b, len); 691 b += len; 692 #else /* USEPKTBUF */ 693 buf = mtod(m, u_short *); 694 cnt = len / 2; 695 while (cnt--) 696 *buf++ = *data; 697 if (len & 1) 698 *buf = *data; /* XXX should be byte store */ 699 #ifdef ESDEBUG 700 if (esdebug) { 701 buf = mtod(m, u_short *); 702 for (i = 0; i < len; ++i) 703 printf ("%02x%s", ((u_char *)buf)[i], 704 ((i & 31) == 31) ? "\n" : ""); 705 if (i & 31) 706 printf ("\n"); 707 } 708 #endif 709 #endif /* USEPKTBUF */ 710 pktlen -= len; 711 *mp = m; 712 mp = &m->m_next; 713 } 714 #ifndef USEPKTBUF 715 smc->b2.mmucr = MMUCR_REMRLS_RX; 716 while (smc->b2.mmucr & MMUCR_BUSY) 717 ; 718 #endif 719 /* 720 * Check if there's a BPF listener on this interface. If so, hand off 721 * the raw packet to bpf. 722 */ 723 bpf_mtap(ifp, top); 724 if_percpuq_enqueue(ifp->if_percpuq, top); 725 #ifdef ESDEBUG 726 if (--sc->sc_smcbusy) { 727 printf("%s: esintr busy on exit\n", device_xname(sc->sc_dev)); 728 panic("esintr busy on exit"); 729 } 730 #endif 731 } 732 733 void 734 estint(struct es_softc *sc) 735 { 736 737 esstart(&sc->sc_ethercom.ec_if); 738 } 739 740 void 741 esstart(struct ifnet *ifp) 742 { 743 struct es_softc *sc = ifp->if_softc; 744 union smcregs *smc = sc->sc_base; 745 struct mbuf *m0, *m; 746 #ifdef USEPKTBUF 747 u_short pktbuf[ETHERMTU + 2]; 748 #else 749 u_short oddbyte, needbyte; 750 #endif 751 u_short pktctlw, pktlen; 752 u_short *buf; 753 volatile u_short *data; 754 #if 0 755 u_long *lbuf; 756 volatile u_long *ldata; 757 #endif 758 short cnt; 759 int i; 760 u_char active_pnr; 761 762 if ((sc->sc_ethercom.ec_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) != 763 IFF_RUNNING) 764 return; 765 766 #ifdef ESDEBUG 767 if (sc->sc_smcbusy++) { 768 printf("%s: esstart re-entered\n", device_xname(sc->sc_dev)); 769 panic("esstart re-entred"); 770 } 771 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 772 printf("%s: esstart BSR not 2: %04x\n", device_xname(sc->sc_dev), 773 smc->b2.bsr); 774 smc->b2.bsr = BSR_BANK2; 775 } 776 #endif 777 for (;;) { 778 #ifdef ESDEBUG 779 u_short start_ptr, end_ptr; 780 #endif 781 /* 782 * Sneak a peek at the next packet to get the length 783 * and see if the SMC 91C90 can accept it. 784 */ 785 m = sc->sc_ethercom.ec_if.if_snd.ifq_head; 786 if (!m) 787 break; 788 #ifdef ESDEBUG 789 if (esdebug && (m->m_next || m->m_len & 1)) 790 printf("%s: esstart m_next %p m_len %d\n", 791 device_xname(sc->sc_dev), m->m_next, m->m_len); 792 #endif 793 for (m0 = m, pktlen = 0; m0; m0 = m0->m_next) 794 pktlen += m0->m_len; 795 pktctlw = 0; 796 pktlen += 4; 797 if (pktlen & 1) 798 ++pktlen; /* control byte after last byte */ 799 else 800 pktlen += 2; /* control byte after pad byte */ 801 smc->b2.mmucr = MMUCR_ALLOC | (pktlen & 0x0700); 802 for (i = 0; i <= 5; ++i) 803 if ((smc->b2.arr & ARR_FAILED) == 0) 804 break; 805 if (smc->b2.arr & ARR_FAILED) { 806 sc->sc_ethercom.ec_if.if_flags |= IFF_OACTIVE; 807 sc->sc_intctl |= MSK_ALLOC; 808 sc->sc_ethercom.ec_if.if_timer = 5; 809 break; 810 } 811 active_pnr = smc->b2.pnr = smc->b2.arr; 812 813 #ifdef ESDEBUG 814 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 815 printf("%s: esstart+ BSR not 2: %04x\n", device_xname(sc->sc_dev), 816 smc->b2.bsr); 817 smc->b2.bsr = BSR_BANK2; 818 } 819 #endif 820 IF_DEQUEUE(&sc->sc_ethercom.ec_if.if_snd, m); 821 smc->b2.ptr = PTR_AUTOINCR; 822 (void) smc->b2.mmucr; 823 data = (volatile u_short *)&smc->b2.data; 824 *data = SWAP(pktctlw); 825 *data = SWAP(pktlen); 826 #ifdef ESDEBUG 827 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 828 printf("%s: esstart++ BSR not 2: %04x\n", device_xname(sc->sc_dev), 829 smc->b2.bsr); 830 smc->b2.bsr = BSR_BANK2; 831 } 832 #endif 833 #ifdef USEPKTBUF 834 i = 0; 835 for (m0 = m; m; m = m->m_next) { 836 memcpy((char *)pktbuf + i, mtod(m, void *), m->m_len); 837 i += m->m_len; 838 } 839 840 if (i & 1) /* Figure out where to put control byte */ 841 pktbuf[i/2] = (pktbuf[i/2] & 0xff00) | CTLB_ODD; 842 else 843 pktbuf[i/2] = 0; 844 pktlen -= 4; 845 #ifdef ESDEBUG 846 if (pktlen > sizeof(pktbuf) && i > (sizeof(pktbuf) * 2)) 847 printf("%s: esstart packet longer than pktbuf\n", 848 device_xname(sc->sc_dev)); 849 #endif 850 #if 0 /* doesn't quite work? */ 851 lbuf = (u_long *)(pktbuf); 852 ldata = (u_long *)data; 853 cnt = pktlen / 4; 854 while(cnt--) 855 *ldata = *lbuf++; 856 if (pktlen & 2) { 857 buf = (u_short *)lbuf; 858 *data = *buf; 859 } 860 #else 861 #ifdef ESDEBUG 862 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 863 printf("%s: esstart++2 BSR not 2: %04x\n", device_xname(sc->sc_dev), 864 smc->b2.bsr); 865 smc->b2.bsr = BSR_BANK2; 866 } 867 start_ptr = SWAP(smc->b2.ptr); /* save PTR before copy */ 868 #endif 869 buf = pktbuf; 870 cnt = pktlen / 2; 871 while (cnt--) 872 *data = *buf++; 873 #ifdef ESDEBUG 874 end_ptr = SWAP(smc->b2.ptr); /* save PTR after copy */ 875 #endif 876 #endif 877 #else /* USEPKTBUF */ 878 pktctlw = 0; 879 oddbyte = needbyte = 0; 880 for (m0 = m; m; m = m->m_next) { 881 buf = mtod(m, u_short *); 882 cnt = m->m_len / 2; 883 if (needbyte) { 884 oddbyte |= *buf >> 8; 885 *data = oddbyte; 886 } 887 while (cnt--) 888 *data = *buf++; 889 if (m->m_len & 1) 890 pktctlw = (*buf & 0xff00) | CTLB_ODD; 891 if (m->m_len & 1 && m->m_next) 892 printf("%s: esstart odd byte count in mbuf\n", 893 device_xname(sc->sc_dev)); 894 } 895 *data = pktctlw; 896 #endif /* USEPKTBUF */ 897 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 898 /* 899 * The bank select register has changed. This seems 900 * to happen with my A2000/Zeus once in a while. It 901 * appears that the Ethernet chip resets while 902 * copying the transmit buffer. Requeue the current 903 * transmit buffer and reinitialize the interface. 904 * The initialize routine will take care of 905 * retransmitting the buffer. mhitch 906 */ 907 #ifdef DIAGNOSTIC 908 printf("%s: esstart+++ BSR not 2: %04x\n", 909 device_xname(sc->sc_dev), smc->b2.bsr); 910 #endif 911 smc->b2.bsr = BSR_BANK2; 912 #ifdef ESDEBUG 913 printf("start_ptr %04x end_ptr %04x cur ptr %04x\n", 914 start_ptr, end_ptr, SWAP(smc->b2.ptr)); 915 --sc->sc_smcbusy; 916 #endif 917 IF_PREPEND(&sc->sc_ethercom.ec_if.if_snd, m0); 918 esinit(sc); /* It's really hosed - reset */ 919 return; 920 } 921 smc->b2.mmucr = MMUCR_ENQ_TX; 922 if (smc->b2.pnr != active_pnr) 923 printf("%s: esstart - PNR changed %x->%x\n", 924 device_xname(sc->sc_dev), active_pnr, smc->b2.pnr); 925 bpf_mtap(&sc->sc_ethercom.ec_if, m0); 926 m_freem(m0); 927 sc->sc_ethercom.ec_if.if_opackets++; /* move to interrupt? */ 928 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 929 sc->sc_ethercom.ec_if.if_timer = 5; 930 } 931 smc->b2.msk = sc->sc_intctl; 932 #ifdef ESDEBUG 933 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 934 printf("%s: esstart++++ BSR not 2: %04x\n", device_xname(sc->sc_dev), 935 smc->b2.bsr); 936 smc->b2.bsr = BSR_BANK2; 937 } 938 if (--sc->sc_smcbusy) { 939 printf("%s: esstart busy on exit\n", device_xname(sc->sc_dev)); 940 panic("esstart busy on exit"); 941 } 942 #endif 943 } 944 945 int 946 esioctl(struct ifnet *ifp, u_long cmd, void *data) 947 { 948 struct es_softc *sc = ifp->if_softc; 949 register struct ifaddr *ifa = (struct ifaddr *)data; 950 struct ifreq *ifr = (struct ifreq *)data; 951 int s, error = 0; 952 953 s = splnet(); 954 955 switch (cmd) { 956 957 case SIOCINITIFADDR: 958 ifp->if_flags |= IFF_UP; 959 960 switch (ifa->ifa_addr->sa_family) { 961 #ifdef INET 962 case AF_INET: 963 esinit(sc); 964 arp_ifinit(ifp, ifa); 965 break; 966 #endif 967 default: 968 esinit(sc); 969 break; 970 } 971 break; 972 973 case SIOCSIFFLAGS: 974 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 975 break; 976 /* XXX see the comment in ed_ioctl() about code re-use */ 977 /* 978 * If interface is marked down and it is running, then stop it 979 */ 980 if ((ifp->if_flags & IFF_UP) == 0 && 981 (ifp->if_flags & IFF_RUNNING) != 0) { 982 /* 983 * If interface is marked down and it is running, then 984 * stop it. 985 */ 986 esstop(sc); 987 ifp->if_flags &= ~IFF_RUNNING; 988 } else if ((ifp->if_flags & IFF_UP) != 0 && 989 (ifp->if_flags & IFF_RUNNING) == 0) { 990 /* 991 * If interface is marked up and it is stopped, then 992 * start it. 993 */ 994 esinit(sc); 995 } else { 996 /* 997 * Reset the interface to pick up changes in any other 998 * flags that affect hardware registers. 999 */ 1000 esstop(sc); 1001 esinit(sc); 1002 } 1003 #ifdef ESDEBUG 1004 if (ifp->if_flags & IFF_DEBUG) 1005 esdebug = sc->sc_debug = 1; 1006 else 1007 esdebug = sc->sc_debug = 0; 1008 #endif 1009 break; 1010 1011 case SIOCADDMULTI: 1012 case SIOCDELMULTI: 1013 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1014 /* 1015 * Multicast list has changed; set the hardware filter 1016 * accordingly. 1017 */ 1018 if (ifp->if_flags & IFF_RUNNING) { 1019 /* XXX */ 1020 } 1021 error = 0; 1022 } 1023 break; 1024 1025 case SIOCGIFMEDIA: 1026 case SIOCSIFMEDIA: 1027 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1028 break; 1029 1030 default: 1031 error = ether_ioctl(ifp, cmd, data); 1032 break; 1033 } 1034 1035 splx(s); 1036 return (error); 1037 } 1038 1039 /* 1040 * Reset the interface. 1041 */ 1042 void 1043 esreset(struct es_softc *sc) 1044 { 1045 int s; 1046 1047 s = splnet(); 1048 esstop(sc); 1049 esinit(sc); 1050 splx(s); 1051 } 1052 1053 void 1054 eswatchdog(struct ifnet *ifp) 1055 { 1056 struct es_softc *sc = ifp->if_softc; 1057 1058 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 1059 ++ifp->if_oerrors; 1060 1061 esreset(sc); 1062 } 1063 1064 int 1065 esmediachange(struct ifnet *ifp) 1066 { 1067 return 0; 1068 } 1069 1070 void 1071 esmediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1072 { 1073 } 1074
Indexes created Tue Sep 30 07:10:03 GMT 2025