if_es.c revision 1.43
1 /* $NetBSD: if_es.c,v 1.43 2008/11/07 00:20:01 dyoung 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 1.43 2008/11/07 00:20:01 dyoung 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 #include <net/if_media.h> 60 61 #ifdef INET 62 #include <netinet/in.h> 63 #include <netinet/in_systm.h> 64 #include <netinet/in_var.h> 65 #include <netinet/ip.h> 66 #include <netinet/if_inarp.h> 67 #endif 68 69 #ifdef NS 70 #include <netns/ns.h> 71 #include <netns/ns_if.h> 72 #endif 73 74 #include <machine/cpu.h> 75 #include <machine/mtpr.h> 76 #include <amiga/amiga/device.h> 77 #include <amiga/amiga/isr.h> 78 #include <amiga/dev/zbusvar.h> 79 #include <amiga/dev/if_esreg.h> 80 81 #define SWAP(x) (((x & 0xff) << 8) | ((x >> 8) & 0xff)) 82 83 #define USEPKTBUF 84 85 /* 86 * Ethernet software status per interface. 87 * 88 * Each interface is referenced by a network interface structure, 89 * es_if, which the routing code uses to locate the interface. 90 * This structure contains the output queue for the interface, its address, ... 91 */ 92 struct es_softc { 93 struct device sc_dev; 94 struct isr sc_isr; 95 struct ethercom sc_ethercom; /* common Ethernet structures */ 96 struct ifmedia sc_media; /* our supported media */ 97 void *sc_base; /* base address of board */ 98 short sc_iflags; 99 unsigned short sc_intctl; 100 #ifdef ESDEBUG 101 int sc_debug; 102 short sc_intbusy; /* counter for interrupt rentered */ 103 short sc_smcbusy; /* counter for other rentry checks */ 104 #endif 105 }; 106 107 #if NBPFILTER > 0 108 #include <net/bpf.h> 109 #include <net/bpfdesc.h> 110 #endif 111 112 #ifdef ESDEBUG 113 /* console error messages */ 114 int esdebug = 0; 115 int estxints = 0; /* IST_TX with TX enabled */ 116 int estxint2 = 0; /* IST_TX active after IST_TX_EMPTY */ 117 int estxint3 = 0; /* IST_TX interrupt processed */ 118 int estxint4 = 0; /* ~TEMPTY counts */ 119 int estxint5 = 0; /* IST_TX_EMPTY interrupts */ 120 void es_dump_smcregs(char *, union smcregs *); 121 #endif 122 123 int esintr(void *); 124 void esstart(struct ifnet *); 125 void eswatchdog(struct ifnet *); 126 int esioctl(struct ifnet *, u_long, void *); 127 void esrint(struct es_softc *); 128 void estint(struct es_softc *); 129 void esinit(struct es_softc *); 130 void esreset(struct es_softc *); 131 void esstop(struct es_softc *); 132 int esmediachange(struct ifnet *); 133 void esmediastatus(struct ifnet *, struct ifmediareq *); 134 135 int esmatch(struct device *, struct cfdata *, void *); 136 void esattach(struct device *, struct device *, void *); 137 138 CFATTACH_DECL(es, sizeof(struct es_softc), 139 esmatch, esattach, NULL, NULL); 140 141 int 142 esmatch(struct device *parent, struct cfdata *cfp, void *aux) 143 { 144 struct zbus_args *zap = aux; 145 146 /* Ameristar A4066 ethernet card */ 147 if (zap->manid == 1053 && zap->prodid == 10) 148 return(1); 149 150 return (0); 151 } 152 153 /* 154 * Interface exists: make available by filling in network interface 155 * record. System will initialize the interface when it is ready 156 * to accept packets. 157 */ 158 void 159 esattach(struct device *parent, struct device *self, void *aux) 160 { 161 struct es_softc *sc = (void *)self; 162 struct zbus_args *zap = aux; 163 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 164 unsigned long ser; 165 u_int8_t myaddr[ETHER_ADDR_LEN]; 166 167 sc->sc_base = zap->va; 168 169 /* 170 * Manufacturer decides the 3 first bytes, i.e. ethernet vendor ID. 171 * (Currently only Ameristar.) 172 */ 173 myaddr[0] = 0x00; 174 myaddr[1] = 0x00; 175 myaddr[2] = 0x9f; 176 177 /* 178 * Serial number for board contains last 3 bytes. 179 */ 180 ser = (unsigned long) zap->serno; 181 182 myaddr[3] = (ser >> 16) & 0xff; 183 myaddr[4] = (ser >> 8) & 0xff; 184 myaddr[5] = (ser ) & 0xff; 185 186 /* Initialize ifnet structure. */ 187 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 188 ifp->if_softc = sc; 189 ifp->if_ioctl = esioctl; 190 ifp->if_start = esstart; 191 ifp->if_watchdog = eswatchdog; 192 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | 193 IFF_MULTICAST; 194 195 ifmedia_init(&sc->sc_media, 0, esmediachange, esmediastatus); 196 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 197 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 198 199 /* Attach the interface. */ 200 if_attach(ifp); 201 ether_ifattach(ifp, myaddr); 202 203 /* Print additional info when attached. */ 204 printf(": address %s\n", ether_sprintf(myaddr)); 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(char *where, union smcregs *smc) 215 { 216 u_short cur_bank = smc->b0.bsr & BSR_MASK; 217 218 printf("SMC registers %p from %s bank %04x\n", smc, where, 219 smc->b0.bsr); 220 smc->b0.bsr = BSR_BANK0; 221 printf("TCR %04x EPHSR %04x RCR %04x ECR %04x MIR %04x MCR %04x\n", 222 SWAP(smc->b0.tcr), SWAP(smc->b0.ephsr), SWAP(smc->b0.rcr), 223 SWAP(smc->b0.ecr), SWAP(smc->b0.mir), SWAP(smc->b0.mcr)); 224 smc->b1.bsr = BSR_BANK1; 225 printf("CR %04x BAR %04x IAR %04x %04x %04x GPR %04x CTR %04x\n", 226 SWAP(smc->b1.cr), SWAP(smc->b1.bar), smc->b1.iar[0], smc->b1.iar[1], 227 smc->b1.iar[2], smc->b1.gpr, SWAP(smc->b1.ctr)); 228 smc->b2.bsr = BSR_BANK2; 229 printf("MMUCR %04x PNR %02x ARR %02x FIFO %04x PTR %04x", 230 SWAP(smc->b2.mmucr), smc->b2.pnr, smc->b2.arr, smc->b2.fifo, 231 SWAP(smc->b2.ptr)); 232 printf(" DATA %04x %04x IST %02x MSK %02x\n", smc->b2.data, 233 smc->b2.datax, smc->b2.ist, smc->b2.msk); 234 smc->b3.bsr = BSR_BANK3; 235 printf("MT %04x %04x %04x %04x\n", 236 smc->b3.mt[0], smc->b3.mt[1], smc->b3.mt[2], smc->b3.mt[3]); 237 smc->b3.bsr = cur_bank; 238 } 239 #endif 240 241 void 242 esstop(struct es_softc *sc) 243 { 244 union smcregs *smc = sc->sc_base; 245 246 /* 247 * Clear interrupt mask; disable all interrupts. 248 */ 249 smc->b2.bsr = BSR_BANK2; 250 smc->b2.msk = 0; 251 252 /* 253 * Disable transmitter and receiver. 254 */ 255 smc->b0.bsr = BSR_BANK0; 256 smc->b0.rcr = 0; 257 smc->b0.tcr = 0; 258 259 /* 260 * Cancel watchdog timer. 261 */ 262 sc->sc_ethercom.ec_if.if_timer = 0; 263 } 264 265 void 266 esinit(struct es_softc *sc) 267 { 268 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 269 union smcregs *smc = sc->sc_base; 270 int s; 271 272 s = splnet(); 273 274 #ifdef ESDEBUG 275 if (ifp->if_flags & IFF_RUNNING) 276 es_dump_smcregs("esinit", smc); 277 #endif 278 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 279 smc->b0.rcr = RCR_EPH_RST; 280 smc->b0.rcr = 0; 281 smc->b3.bsr = BSR_BANK3; /* Select bank 3 */ 282 smc->b3.mt[0] = 0; /* clear Multicast table */ 283 smc->b3.mt[1] = 0; 284 smc->b3.mt[2] = 0; 285 smc->b3.mt[3] = 0; 286 /* XXX set Multicast table from Multicast list */ 287 smc->b1.bsr = BSR_BANK1; /* Select bank 1 */ 288 smc->b1.cr = CR_RAM32K | CR_NO_WAIT_ST | CR_SET_SQLCH; 289 smc->b1.ctr = CTR_AUTO_RLSE | CTR_TE_ENA; 290 smc->b1.iar[0] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[0]); 291 smc->b1.iar[1] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[2]); 292 smc->b1.iar[2] = *((const unsigned short *) &CLLADDR(ifp->if_sadl)[4]); 293 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 294 smc->b2.mmucr = MMUCR_RESET; 295 smc->b0.bsr = BSR_BANK0; /* Select bank 0 */ 296 smc->b0.mcr = SWAP(0x0020); /* reserve 8K for transmit buffers */ 297 smc->b0.tcr = TCR_PAD_EN | (TCR_TXENA + TCR_MON_CSN); 298 smc->b0.rcr = RCR_FILT_CAR | RCR_STRIP_CRC | RCR_RXEN | RCR_ALLMUL; 299 /* XXX add promiscuous flags */ 300 smc->b2.bsr = BSR_BANK2; /* Select bank 2 */ 301 smc->b2.msk = sc->sc_intctl = MSK_RX_OVRN | MSK_RX | MSK_EPHINT; 302 303 /* Interface is now 'running', with no output active. */ 304 ifp->if_flags |= IFF_RUNNING; 305 ifp->if_flags &= ~IFF_OACTIVE; 306 307 /* Attempt to start output, if any. */ 308 esstart(ifp); 309 310 splx(s); 311 } 312 313 int 314 esintr(void *arg) 315 { 316 struct es_softc *sc = arg; 317 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 318 u_short intsts, intact; 319 union smcregs *smc; 320 int s = splnet(); 321 322 smc = sc->sc_base; 323 #ifdef ESDEBUG 324 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2 && 325 ifp->if_flags & IFF_RUNNING) { 326 printf("%s: intr BSR not 2: %04x\n", sc->sc_dev.dv_xname, 327 smc->b2.bsr); 328 smc->b2.bsr = BSR_BANK2; 329 } 330 #endif 331 intsts = smc->b2.ist; 332 intact = smc->b2.msk & intsts; 333 if ((intact) == 0) { 334 splx(s); 335 return (0); 336 } 337 #ifdef ESDEBUG 338 if (esdebug) 339 printf ("%s: esintr ist %02x msk %02x", 340 sc->sc_dev.dv_xname, intsts, smc->b2.msk); 341 if (sc->sc_intbusy++) { 342 printf("%s: esintr re-entered\n", sc->sc_dev.dv_xname); 343 panic("esintr re-entered"); 344 } 345 if (sc->sc_smcbusy) 346 printf("%s: esintr interrupted busy %d\n", sc->sc_dev.dv_xname, 347 sc->sc_smcbusy); 348 #endif 349 smc->b2.msk = 0; 350 #ifdef ESDEBUG 351 if (esdebug) 352 printf ("=>%02x%02x pnr %02x arr %02x fifo %04x\n", 353 smc->b2.ist, smc->b2.ist, smc->b2.pnr, smc->b2.arr, 354 smc->b2.fifo); 355 #endif 356 if (intact & IST_ALLOC) { 357 sc->sc_intctl &= ~MSK_ALLOC; 358 #ifdef ESDEBUG 359 if (esdebug || 1) 360 printf ("%s: ist %02x", sc->sc_dev.dv_xname, 361 intsts); 362 #endif 363 if ((smc->b2.arr & ARR_FAILED) == 0) { 364 u_char save_pnr; 365 #ifdef ESDEBUG 366 if (esdebug || 1) 367 printf (" arr %02x\n", smc->b2.arr); 368 #endif 369 save_pnr = smc->b2.pnr; 370 smc->b2.pnr = smc->b2.arr; 371 smc->b2.mmucr = MMUCR_RLSPKT; 372 while (smc->b2.mmucr & MMUCR_BUSY) 373 ; 374 smc->b2.pnr = save_pnr; 375 ifp->if_flags &= ~IFF_OACTIVE; 376 ifp->if_timer = 0; 377 } 378 #ifdef ESDEBUG 379 else if (esdebug || 1) 380 printf (" IST_ALLOC with ARR_FAILED?\n"); 381 #endif 382 } 383 #ifdef ESDEBUG 384 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 385 printf("%s: intr+ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 386 smc->b2.bsr); 387 smc->b2.bsr = BSR_BANK2; 388 } 389 #endif 390 while ((smc->b2.fifo & FIFO_REMPTY) == 0) { 391 esrint(sc); 392 } 393 #ifdef ESDEBUG 394 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 395 printf("%s: intr++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 396 smc->b2.bsr); 397 smc->b2.bsr = BSR_BANK2; 398 } 399 #endif 400 if (intact & IST_RX_OVRN) { 401 printf ("%s: Overrun ist %02x", sc->sc_dev.dv_xname, 402 intsts); 403 smc->b2.ist = ACK_RX_OVRN; 404 printf ("->%02x\n", smc->b2.ist); 405 ifp->if_ierrors++; 406 } 407 if (intact & IST_TX_EMPTY) { 408 u_short ecr; 409 #ifdef ESDEBUG 410 if (esdebug) 411 printf ("%s: TX EMPTY %02x", 412 sc->sc_dev.dv_xname, intsts); 413 ++estxint5; /* count # IST_TX_EMPTY ints */ 414 #endif 415 smc->b2.ist = ACK_TX_EMPTY; 416 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 417 ifp->if_timer = 0; 418 #ifdef ESDEBUG 419 if (esdebug) 420 printf ("->%02x intcl %x pnr %02x arr %02x\n", 421 smc->b2.ist, sc->sc_intctl, smc->b2.pnr, 422 smc->b2.arr); 423 #endif 424 if (smc->b2.ist & IST_TX) { 425 intact |= IST_TX; 426 #ifdef ESDEBUG 427 ++estxint2; /* count # TX after TX_EMPTY */ 428 #endif 429 } else { 430 smc->b0.bsr = BSR_BANK0; 431 ecr = smc->b0.ecr; /* Get error counters */ 432 if (ecr & 0xff00) 433 ifp->if_collisions += ((ecr >> 8) & 15) + 434 ((ecr >> 11) & 0x1e); 435 smc->b2.bsr = BSR_BANK2; 436 #if 0 437 smc->b2.mmucr = MMUCR_RESET_TX; /* XXX reset TX FIFO */ 438 #endif 439 } 440 } 441 if (intact & IST_TX) { 442 u_char tx_pnr, save_pnr; 443 u_short save_ptr, ephsr, tcr; 444 int n = 0; 445 #ifdef ESDEBUG 446 if (esdebug) { 447 printf ("%s: TX INT ist %02x", 448 sc->sc_dev.dv_xname, intsts); 449 printf ("->%02x\n", smc->b2.ist); 450 } 451 ++estxint3; /* count # IST_TX */ 452 #endif 453 zzzz: 454 #ifdef ESDEBUG 455 ++estxint4; /* count # ~TEMPTY */ 456 #endif 457 smc->b0.bsr = BSR_BANK0; 458 ephsr = smc->b0.ephsr; /* get EPHSR */ 459 tcr = smc->b0.tcr; /* and TCR */ 460 smc->b2.bsr = BSR_BANK2; 461 save_ptr = smc->b2.ptr; 462 save_pnr = smc->b2.pnr; 463 tx_pnr = smc->b2.fifo >> 8; /* pktno from completion fifo */ 464 smc->b2.pnr = tx_pnr; /* set TX packet number */ 465 smc->b2.ptr = PTR_READ; /* point to status word */ 466 #if 0 /* XXXX */ 467 printf("%s: esintr TXINT IST %02x PNR %02x(%d)", 468 sc->sc_dev.dv_xname, smc->b2.ist, 469 tx_pnr, n); 470 printf(" Status %04x", smc->b2.data); 471 printf(" EPHSR %04x\n", ephsr); 472 #endif 473 if ((smc->b2.data & EPHSR_TX_SUC) == 0 && (tcr & TCR_TXENA) == 0) { 474 /* 475 * Transmitter was stopped for some error. Enqueue 476 * the packet again and restart the transmitter. 477 * May need some check to limit the number of retries. 478 */ 479 smc->b2.mmucr = MMUCR_ENQ_TX; 480 smc->b0.bsr = BSR_BANK0; 481 smc->b0.tcr |= TCR_TXENA; 482 smc->b2.bsr = BSR_BANK2; 483 ifp->if_oerrors++; 484 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 485 } else { 486 /* 487 * This shouldn't have happened: IST_TX indicates 488 * the TX completion FIFO is not empty, but the 489 * status for the packet on the completion FIFO 490 * shows that the transmit was successful. Since 491 * AutoRelease is being used, a successful transmit 492 * should not result in a packet on the completion 493 * FIFO. Also, that packet doesn't seem to want 494 * to be acknowledged. If this occurs, just reset 495 * the TX FIFOs. 496 */ 497 #if 1 498 if (smc->b2.ist & IST_TX_EMPTY) { 499 smc->b2.mmucr = MMUCR_RESET_TX; 500 sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX); 501 ifp->if_timer = 0; 502 } 503 #endif 504 #ifdef ESDEBUG 505 ++estxints; /* count IST_TX with TX enabled */ 506 #endif 507 } 508 smc->b2.pnr = save_pnr; 509 smc->b2.ptr = save_ptr; 510 smc->b2.ist = ACK_TX; 511 512 if ((smc->b2.fifo & FIFO_TEMPTY) == 0 && n++ < 32) { 513 #if 0 /* XXXX */ 514 printf("%s: multiple TX int(%2d) pnr %02x ist %02x fifo %04x", 515 sc->sc_dev.dv_xname, n, tx_pnr, smc->b2.ist, smc->b2.fifo); 516 smc->w2.istmsk = ACK_TX << 8; 517 printf(" %04x\n", smc->b2.fifo); 518 #endif 519 if (tx_pnr != (smc->b2.fifo >> 8)) 520 goto zzzz; 521 } 522 } 523 if (intact & IST_EPHINT) { 524 ifp->if_oerrors++; 525 esreset(sc); 526 } 527 /* output packets */ 528 estint(sc); 529 #ifdef ESDEBUG 530 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 531 printf("%s: intr+++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 532 smc->b2.bsr); 533 smc->b2.bsr = BSR_BANK2; 534 } 535 #endif 536 smc->b2.msk = sc->sc_intctl; 537 #ifdef ESDEBUG 538 if (--sc->sc_intbusy) { 539 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 540 panic("esintr busy on exit"); 541 } 542 #endif 543 splx(s); 544 return (1); 545 } 546 547 void 548 esrint(struct es_softc *sc) 549 { 550 union smcregs *smc = sc->sc_base; 551 u_short len; 552 short cnt; 553 u_short pktctlw, pktlen, *buf; 554 volatile u_short *data; 555 #if 0 556 u_long *lbuf; 557 volatile u_long *ldata; 558 #endif 559 struct ifnet *ifp; 560 struct mbuf *top, **mp, *m; 561 #ifdef USEPKTBUF 562 u_char *b, pktbuf[1530]; 563 #endif 564 #ifdef ESDEBUG 565 int i; 566 #endif 567 568 ifp = &sc->sc_ethercom.ec_if; 569 #ifdef ESDEBUG 570 if (esdebug) 571 printf ("%s: esrint fifo %04x", sc->sc_dev.dv_xname, 572 smc->b2.fifo); 573 if (sc->sc_smcbusy++) { 574 printf("%s: esrint re-entered\n", sc->sc_dev.dv_xname); 575 panic("esrint re-entered"); 576 } 577 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 578 printf("%s: rint BSR not 2: %04x\n", sc->sc_dev.dv_xname, 579 smc->b2.bsr); 580 smc->b2.bsr = BSR_BANK2; 581 } 582 #endif 583 data = (volatile u_short *)&smc->b2.data; 584 smc->b2.ptr = PTR_RCV | PTR_AUTOINCR | PTR_READ | SWAP(0x0002); 585 (void) smc->b2.mmucr; 586 #ifdef ESDEBUG 587 if (esdebug) 588 printf ("->%04x", smc->b2.fifo); 589 #endif 590 len = *data; 591 len = SWAP(len); /* Careful of macro side-effects */ 592 #ifdef ESDEBUG 593 if (esdebug) 594 printf (" length %d", len); 595 #endif 596 smc->b2.ptr = PTR_RCV | (PTR_AUTOINCR + PTR_READ) | SWAP(0x0000); 597 (void) smc->b2.mmucr; 598 pktctlw = *data; 599 pktlen = *data; 600 pktctlw = SWAP(pktctlw); 601 pktlen = SWAP(pktlen) - 6; 602 if (pktctlw & RFSW_ODDFRM) 603 pktlen++; 604 if (len > 1530) { 605 printf("%s: Corrupted packet length-sts %04x bytcnt %04x len %04x bank %04x\n", 606 sc->sc_dev.dv_xname, pktctlw, pktlen, len, smc->b2.bsr); 607 /* XXX ignore packet, or just truncate? */ 608 #if defined(ESDEBUG) && defined(DDB) 609 if ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) 610 Debugger(); 611 #endif 612 smc->b2.bsr = BSR_BANK2; 613 smc->b2.mmucr = MMUCR_REMRLS_RX; 614 while (smc->b2.mmucr & MMUCR_BUSY) 615 ; 616 ++ifp->if_ierrors; 617 #ifdef ESDEBUG 618 if (--sc->sc_smcbusy) { 619 printf("%s: esrintr busy on bad packet exit\n", 620 sc->sc_dev.dv_xname); 621 panic("esrintr busy on exit"); 622 } 623 #endif 624 return; 625 } 626 #ifdef USEPKTBUF 627 #if 0 628 lbuf = (u_long *) pktbuf; 629 ldata = (u_long *)data; 630 cnt = (len - 4) / 4; 631 while (cnt--) 632 *lbuf++ = *ldata; 633 if ((len - 4) & 2) { 634 buf = (u_short *) lbuf; 635 *buf = *data; 636 } 637 #else 638 buf = (u_short *)pktbuf; 639 cnt = (len - 4) / 2; 640 while (cnt--) 641 *buf++ = *data; 642 #endif 643 smc->b2.mmucr = MMUCR_REMRLS_RX; 644 while (smc->b2.mmucr & MMUCR_BUSY) 645 ; 646 #ifdef ESDEBUG 647 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 648 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 649 /* count input error? */ 650 } 651 if (esdebug) { 652 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 653 smc->b2.fifo); 654 for (i = 0; i < pktlen; ++i) 655 printf ("%02x%s", pktbuf[i], ((i & 31) == 31) ? "\n" : 656 ""); 657 if (i & 31) 658 printf ("\n"); 659 } 660 #endif 661 #else /* USEPKTBUF */ 662 /* XXX copy directly from controller to mbuf */ 663 #ifdef ESDEBUG 664 if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) { 665 printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw); 666 /* count input error? */ 667 } 668 if (esdebug) { 669 printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen, 670 smc->b2.fifo); 671 } 672 #endif 673 #endif /* USEPKTBUF */ 674 ifp->if_ipackets++; 675 MGETHDR(m, M_DONTWAIT, MT_DATA); 676 if (m == NULL) 677 return; 678 m->m_pkthdr.rcvif = ifp; 679 m->m_pkthdr.len = pktlen; 680 len = MHLEN; 681 top = NULL; 682 mp = ⊤ 683 #ifdef USEPKTBUF 684 b = pktbuf; 685 #endif 686 while (pktlen > 0) { 687 if (top) { 688 MGET(m, M_DONTWAIT, MT_DATA); 689 if (m == 0) { 690 m_freem(top); 691 return; 692 } 693 len = MLEN; 694 } 695 if (pktlen >= MINCLSIZE) { 696 MCLGET(m, M_DONTWAIT); 697 if (m->m_flags & M_EXT) 698 len = MCLBYTES; 699 } 700 m->m_len = len = min(pktlen, len); 701 #ifdef USEPKTBUF 702 bcopy((void *)b, mtod(m, void *), len); 703 b += len; 704 #else /* USEPKTBUF */ 705 buf = mtod(m, u_short *); 706 cnt = len / 2; 707 while (cnt--) 708 *buf++ = *data; 709 if (len & 1) 710 *buf = *data; /* XXX should be byte store */ 711 #ifdef ESDEBUG 712 if (esdebug) { 713 buf = mtod(m, u_short *); 714 for (i = 0; i < len; ++i) 715 printf ("%02x%s", ((u_char *)buf)[i], 716 ((i & 31) == 31) ? "\n" : ""); 717 if (i & 31) 718 printf ("\n"); 719 } 720 #endif 721 #endif /* USEPKTBUF */ 722 pktlen -= len; 723 *mp = m; 724 mp = &m->m_next; 725 } 726 #ifndef USEPKTBUF 727 smc->b2.mmucr = MMUCR_REMRLS_RX; 728 while (smc->b2.mmucr & MMUCR_BUSY) 729 ; 730 #endif 731 #if NBPFILTER > 0 732 /* 733 * Check if there's a BPF listener on this interface. If so, hand off 734 * the raw packet to bpf. 735 */ 736 if (ifp->if_bpf) 737 bpf_mtap(ifp->if_bpf, top); 738 #endif 739 (*ifp->if_input)(ifp, top); 740 #ifdef ESDEBUG 741 if (--sc->sc_smcbusy) { 742 printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname); 743 panic("esintr busy on exit"); 744 } 745 #endif 746 } 747 748 void 749 estint(struct es_softc *sc) 750 { 751 752 esstart(&sc->sc_ethercom.ec_if); 753 } 754 755 void 756 esstart(struct ifnet *ifp) 757 { 758 struct es_softc *sc = ifp->if_softc; 759 union smcregs *smc = sc->sc_base; 760 struct mbuf *m0, *m; 761 #ifdef USEPKTBUF 762 u_short pktbuf[ETHERMTU + 2]; 763 #else 764 u_short oddbyte, needbyte; 765 #endif 766 u_short pktctlw, pktlen; 767 u_short *buf; 768 volatile u_short *data; 769 #if 0 770 u_long *lbuf; 771 volatile u_long *ldata; 772 #endif 773 short cnt; 774 int i; 775 u_char active_pnr; 776 777 if ((sc->sc_ethercom.ec_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) != 778 IFF_RUNNING) 779 return; 780 781 #ifdef ESDEBUG 782 if (sc->sc_smcbusy++) { 783 printf("%s: esstart re-entered\n", sc->sc_dev.dv_xname); 784 panic("esstart re-entred"); 785 } 786 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 787 printf("%s: esstart BSR not 2: %04x\n", sc->sc_dev.dv_xname, 788 smc->b2.bsr); 789 smc->b2.bsr = BSR_BANK2; 790 } 791 #endif 792 for (;;) { 793 #ifdef ESDEBUG 794 u_short start_ptr, end_ptr; 795 #endif 796 /* 797 * Sneak a peek at the next packet to get the length 798 * and see if the SMC 91C90 can accept it. 799 */ 800 m = sc->sc_ethercom.ec_if.if_snd.ifq_head; 801 if (!m) 802 break; 803 #ifdef ESDEBUG 804 if (esdebug && (m->m_next || m->m_len & 1)) 805 printf("%s: esstart m_next %p m_len %d\n", 806 sc->sc_dev.dv_xname, m->m_next, m->m_len); 807 #endif 808 for (m0 = m, pktlen = 0; m0; m0 = m0->m_next) 809 pktlen += m0->m_len; 810 pktctlw = 0; 811 pktlen += 4; 812 if (pktlen & 1) 813 ++pktlen; /* control byte after last byte */ 814 else 815 pktlen += 2; /* control byte after pad byte */ 816 smc->b2.mmucr = MMUCR_ALLOC | (pktlen & 0x0700); 817 for (i = 0; i <= 5; ++i) 818 if ((smc->b2.arr & ARR_FAILED) == 0) 819 break; 820 if (smc->b2.arr & ARR_FAILED) { 821 sc->sc_ethercom.ec_if.if_flags |= IFF_OACTIVE; 822 sc->sc_intctl |= MSK_ALLOC; 823 sc->sc_ethercom.ec_if.if_timer = 5; 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_ethercom.ec_if.if_snd, m); 836 smc->b2.ptr = PTR_AUTOINCR; 837 (void) smc->b2.mmucr; 838 data = (volatile 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, void *), (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_ethercom.ec_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_ethercom.ec_if.if_bpf) 942 bpf_mtap(sc->sc_ethercom.ec_if.if_bpf, m0); 943 #endif 944 m_freem(m0); 945 sc->sc_ethercom.ec_if.if_opackets++; /* move to interrupt? */ 946 sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX; 947 sc->sc_ethercom.ec_if.if_timer = 5; 948 } 949 smc->b2.msk = sc->sc_intctl; 950 #ifdef ESDEBUG 951 while ((smc->b2.bsr & BSR_MASK) != BSR_BANK2) { 952 printf("%s: esstart++++ BSR not 2: %04x\n", sc->sc_dev.dv_xname, 953 smc->b2.bsr); 954 smc->b2.bsr = BSR_BANK2; 955 } 956 if (--sc->sc_smcbusy) { 957 printf("%s: esstart busy on exit\n", sc->sc_dev.dv_xname); 958 panic("esstart busy on exit"); 959 } 960 #endif 961 } 962 963 int 964 esioctl(struct ifnet *ifp, u_long cmd, void *data) 965 { 966 struct es_softc *sc = ifp->if_softc; 967 register struct ifaddr *ifa = (struct ifaddr *)data; 968 struct ifreq *ifr = (struct ifreq *)data; 969 int s, error = 0; 970 971 s = splnet(); 972 973 switch (cmd) { 974 975 case SIOCINITIFADDR: 976 ifp->if_flags |= IFF_UP; 977 978 switch (ifa->ifa_addr->sa_family) { 979 #ifdef INET 980 case AF_INET: 981 esinit(sc); 982 arp_ifinit(ifp, ifa); 983 break; 984 #endif 985 #ifdef NS 986 case AF_NS: 987 { 988 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 989 990 if (ns_nullhost(*ina)) 991 ina->x_host = 992 *(union ns_host *)LLADDR(ifp->if_sadl); 993 else 994 bcopy(ina->x_host.c_host, 995 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 996 /* Set new address. */ 997 esinit(sc); 998 break; 999 } 1000 #endif 1001 default: 1002 esinit(sc); 1003 break; 1004 } 1005 break; 1006 1007 case SIOCSIFFLAGS: 1008 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1009 break; 1010 /* XXX see the comment in ed_ioctl() about code re-use */ 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 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1048 /* 1049 * Multicast list has changed; set the hardware filter 1050 * accordingly. 1051 */ 1052 if (ifp->if_flags & IFF_RUNNING) { 1053 /* XXX */ 1054 } 1055 error = 0; 1056 } 1057 break; 1058 1059 case SIOCGIFMEDIA: 1060 case SIOCSIFMEDIA: 1061 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 1062 break; 1063 1064 default: 1065 error = ether_ioctl(ifp, cmd, data); 1066 break; 1067 } 1068 1069 splx(s); 1070 return (error); 1071 } 1072 1073 /* 1074 * Reset the interface. 1075 */ 1076 void 1077 esreset(struct es_softc *sc) 1078 { 1079 int s; 1080 1081 s = splnet(); 1082 esstop(sc); 1083 esinit(sc); 1084 splx(s); 1085 } 1086 1087 void 1088 eswatchdog(struct ifnet *ifp) 1089 { 1090 struct es_softc *sc = ifp->if_softc; 1091 1092 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 1093 ++ifp->if_oerrors; 1094 1095 esreset(sc); 1096 } 1097 1098 int 1099 esmediachange(struct ifnet *ifp) 1100 { 1101 return 0; 1102 } 1103 1104 void 1105 esmediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1106 { 1107 } 1108
Indexes created Mon Sep 29 21:09:56 GMT 2025