if_iy.c revision 1.16
1 /* $NetBSD: if_iy.c,v 1.16 1997/10/20 18:43:14 thorpej Exp $ */ 2 /* #define IYDEBUG */ 3 /* #define IYMEMDEBUG */ 4 /*- 5 * Copyright (c) 1996 Ignatios Souvatzis. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product contains software developed by Ignatios Souvatzis for 19 * the NetBSD project. 20 * 4. The names of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "bpfilter.h" 37 #include "rnd.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/mbuf.h> 42 #include <sys/buf.h> 43 #include <sys/protosw.h> 44 #include <sys/socket.h> 45 #include <sys/ioctl.h> 46 #include <sys/errno.h> 47 #include <sys/syslog.h> 48 #include <sys/device.h> 49 #if NRND > 0 50 #include <sys/rnd.h> 51 #endif 52 53 #include <net/if.h> 54 #include <net/if_types.h> 55 #include <net/if_dl.h> 56 57 #include <net/if_ether.h> 58 59 #if NBPFILTER > 0 60 #include <net/bpf.h> 61 #include <net/bpfdesc.h> 62 #endif 63 64 #ifdef INET 65 #include <netinet/in.h> 66 #include <netinet/in_systm.h> 67 #include <netinet/in_var.h> 68 #include <netinet/ip.h> 69 #include <netinet/if_inarp.h> 70 #endif 71 72 #ifdef NS 73 #include <netns/ns.h> 74 #include <netns/ns_if.h> 75 #endif 76 77 #include <vm/vm.h> 78 79 #include <machine/cpu.h> 80 #include <machine/bus.h> 81 #include <machine/intr.h> 82 83 #include <dev/isa/isareg.h> 84 #include <dev/isa/isavar.h> 85 #include <dev/ic/i82595reg.h> 86 87 #define ETHER_MIN_LEN (ETHERMIN + sizeof(struct ether_header) + 4) 88 #define ETHER_MAX_LEN (ETHERMTU + sizeof(struct ether_header) + 4) 89 90 /* 91 * Ethernet status, per interface. 92 */ 93 struct iy_softc { 94 struct device sc_dev; 95 void *sc_ih; 96 97 bus_space_tag_t sc_iot; 98 bus_space_handle_t sc_ioh; 99 100 struct ethercom sc_ethercom; 101 102 int mappedirq; 103 104 int hard_vers; 105 106 int promisc; 107 108 int sram, tx_size, rx_size; 109 110 int tx_start, tx_end, tx_last; 111 int rx_start; 112 113 #ifdef IYDEBUG 114 int sc_debug; 115 #endif 116 117 #if NRND > 0 118 rndsource_element_t rnd_source; 119 #endif 120 }; 121 122 void iywatchdog __P((struct ifnet *)); 123 int iyioctl __P((struct ifnet *, u_long, caddr_t)); 124 int iyintr __P((void *)); 125 void iyinit __P((struct iy_softc *)); 126 void iystop __P((struct iy_softc *)); 127 void iystart __P((struct ifnet *)); 128 129 void iy_intr_rx __P((struct iy_softc *)); 130 void iy_intr_tx __P((struct iy_softc *)); 131 132 void iyreset __P((struct iy_softc *)); 133 void iy_readframe __P((struct iy_softc *, int)); 134 void iy_drop_packet_buffer __P((struct iy_softc *)); 135 void iy_find_mem_size __P((struct iy_softc *)); 136 void iyrint __P((struct iy_softc *)); 137 void iytint __P((struct iy_softc *)); 138 void iyxmit __P((struct iy_softc *)); 139 void iyget __P((struct iy_softc *, bus_space_tag_t, bus_space_handle_t, int)); 140 void iyprobemem __P((struct iy_softc *)); 141 static __inline void eepromwritebit __P((bus_space_tag_t, bus_space_handle_t, 142 int)); 143 static __inline int eepromreadbit __P((bus_space_tag_t, bus_space_handle_t)); 144 /* 145 * void iymeminit __P((void *, struct iy_softc *)); 146 * static int iy_mc_setup __P((struct iy_softc *, void *)); 147 * static void iy_mc_reset __P((struct iy_softc *)); 148 */ 149 #ifdef IYDEBUGX 150 void print_rbd __P((volatile struct iy_recv_buf_desc *)); 151 152 int in_ifrint = 0; 153 int in_iftint = 0; 154 #endif 155 156 int iyprobe __P((struct device *, void *, void *)); 157 void iyattach __P((struct device *, struct device *, void *)); 158 159 static u_int16_t eepromread __P((bus_space_tag_t, bus_space_handle_t, int)); 160 161 static int eepromreadall __P((bus_space_tag_t, bus_space_handle_t, u_int16_t *, 162 int)); 163 164 struct cfattach iy_ca = { 165 sizeof(struct iy_softc), iyprobe, iyattach 166 }; 167 168 struct cfdriver iy_cd = { 169 NULL, "iy", DV_IFNET 170 }; 171 172 static u_int8_t eepro_irqmap[] = EEPP_INTMAP; 173 static u_int8_t eepro_revirqmap[] = EEPP_RINTMAP; 174 175 int 176 iyprobe(parent, match, aux) 177 struct device *parent; 178 void *match, *aux; 179 { 180 struct isa_attach_args *ia = aux; 181 u_int16_t eaddr[8]; 182 183 bus_space_tag_t iot; 184 bus_space_handle_t ioh; 185 186 u_int8_t c, d; 187 188 iot = ia->ia_iot; 189 190 if (ia->ia_iobase == IOBASEUNK) 191 return 0; 192 193 if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh)) 194 return 0; 195 196 /* try to find the round robin sig: */ 197 198 c = bus_space_read_1(iot, ioh, ID_REG); 199 if ((c & ID_REG_MASK) != ID_REG_SIG) 200 goto out; 201 202 d = bus_space_read_1(iot, ioh, ID_REG); 203 if ((d & ID_REG_MASK) != ID_REG_SIG) 204 goto out; 205 206 if (((d-c) & R_ROBIN_BITS) != 0x40) 207 goto out; 208 209 d = bus_space_read_1(iot, ioh, ID_REG); 210 if ((d & ID_REG_MASK) != ID_REG_SIG) 211 goto out; 212 213 if (((d-c) & R_ROBIN_BITS) != 0x80) 214 goto out; 215 216 d = bus_space_read_1(iot, ioh, ID_REG); 217 if ((d & ID_REG_MASK) != ID_REG_SIG) 218 goto out; 219 220 if (((d-c) & R_ROBIN_BITS) != 0xC0) 221 goto out; 222 223 d = bus_space_read_1(iot, ioh, ID_REG); 224 if ((d & ID_REG_MASK) != ID_REG_SIG) 225 goto out; 226 227 if (((d-c) & R_ROBIN_BITS) != 0x00) 228 goto out; 229 230 #ifdef IYDEBUG 231 printf("iyprobe verified working ID reg.\n"); 232 #endif 233 234 if (eepromreadall(iot, ioh, eaddr, 8)) 235 goto out; 236 237 if (ia->ia_irq == IRQUNK) 238 ia->ia_irq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; 239 240 if (ia->ia_irq >= sizeof(eepro_revirqmap)) 241 goto out; 242 243 if (eepro_revirqmap[ia->ia_irq] == 0xff) 244 goto out; 245 246 /* now lets reset the chip */ 247 248 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 249 delay(200); 250 251 ia->ia_iosize = 16; 252 253 bus_space_unmap(iot, ioh, 16); 254 return 1; /* found */ 255 out: 256 bus_space_unmap(iot, ioh, 16); 257 return 0; 258 } 259 260 void 261 iyattach(parent, self, aux) 262 struct device *parent, *self; 263 void *aux; 264 { 265 struct iy_softc *sc = (void *)self; 266 struct isa_attach_args *ia = aux; 267 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 268 bus_space_tag_t iot; 269 bus_space_handle_t ioh; 270 unsigned temp; 271 u_int16_t eaddr[8]; 272 u_int8_t myaddr[ETHER_ADDR_LEN]; 273 int eirq; 274 275 iot = ia->ia_iot; 276 277 if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh)) { 278 printf(": can't map i/o space\n"); 279 return; 280 } 281 282 sc->sc_iot = iot; 283 sc->sc_ioh = ioh; 284 285 sc->mappedirq = eepro_revirqmap[ia->ia_irq]; 286 287 /* now let's reset the chip */ 288 289 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 290 delay(200); 291 292 iyprobemem(sc); 293 294 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 295 ifp->if_softc = sc; 296 ifp->if_start = iystart; 297 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 298 /* XXX todo: | IFF_MULTICAST */ 299 300 ifp->if_ioctl = iyioctl; 301 ifp->if_watchdog = iywatchdog; 302 303 (void)eepromreadall(iot, ioh, eaddr, 8); 304 sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev; 305 306 #ifdef DIAGNOSTICS 307 if ((eaddr[EEPPEther0] != 308 eepromread(iot, ioh, EEPPEther0a)) && 309 (eaddr[EEPPEther1] != 310 eepromread(iot, ioh, EEPPEther1a)) && 311 (eaddr[EEPPEther2] != 312 eepromread(iot, ioh, EEPPEther2a))) 313 314 printf("EEPROM Ethernet address differs from copy\n"); 315 #endif 316 317 myaddr[1] = eaddr[EEPPEther0] & 0xFF; 318 myaddr[0] = eaddr[EEPPEther0] >> 8; 319 myaddr[3] = eaddr[EEPPEther1] & 0xFF; 320 myaddr[2] = eaddr[EEPPEther1] >> 8; 321 myaddr[5] = eaddr[EEPPEther2] & 0xFF; 322 myaddr[4] = eaddr[EEPPEther2] >> 8; 323 324 /* Attach the interface. */ 325 if_attach(ifp); 326 ether_ifattach(ifp, myaddr); 327 printf(": address %s, rev. %d, %d kB\n", 328 ether_sprintf(myaddr), 329 sc->hard_vers, sc->sram/1024); 330 331 eirq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; 332 if (eirq != ia->ia_irq) 333 printf("%s: EEPROM irq setting %d ignored\n", 334 sc->sc_dev.dv_xname, eirq); 335 336 #if NBPFILTER > 0 337 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 338 #endif 339 340 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 341 IPL_NET, iyintr, sc); 342 343 #if NRND > 0 344 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, RND_TYPE_NET); 345 #endif 346 347 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 348 bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 349 } 350 351 void 352 iystop(sc) 353 struct iy_softc *sc; 354 { 355 bus_space_tag_t iot; 356 bus_space_handle_t ioh; 357 #ifdef IYDEBUG 358 u_int p, v; 359 #endif 360 361 iot = sc->sc_iot; 362 ioh = sc->sc_ioh; 363 364 bus_space_write_1(iot, ioh, COMMAND_REG, RCV_DISABLE_CMD); 365 366 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS); 367 bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); 368 369 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 370 delay(200); 371 #ifdef IYDEBUG 372 printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n", 373 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 374 p = sc->tx_last; 375 if (!p) 376 p = sc->tx_start; 377 do { 378 bus_space_write_2(iot, ioh, HOST_ADDR_REG, p); 379 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 380 printf("0x%04x: %b ", p, v, "\020\006Ab\010Dn"); 381 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 382 printf("0x%b", v, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL"); 383 p = bus_space_read_2(iot, ioh, MEM_PORT_REG); 384 printf(" 0x%04x", p); 385 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 386 printf(" 0x%b\n", v, "\020\020Ch"); 387 388 } while (v & 0x8000); 389 #endif 390 sc->tx_start = sc->tx_end = sc->rx_size; 391 sc->tx_last = 0; 392 sc->sc_ethercom.ec_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 393 } 394 395 void 396 iyreset(sc) 397 struct iy_softc *sc; 398 { 399 int s; 400 s = splimp(); 401 iystop(sc); 402 iyinit(sc); 403 splx(s); 404 } 405 406 void 407 iyinit(sc) 408 struct iy_softc *sc; 409 { 410 int i; 411 unsigned temp; 412 struct ifnet *ifp; 413 bus_space_tag_t iot; 414 bus_space_handle_t ioh; 415 416 iot = sc->sc_iot; 417 ioh = sc->sc_ioh; 418 419 ifp = &sc->sc_ethercom.ec_if; 420 #ifdef IYDEBUG 421 printf("ifp is %p\n", ifp); 422 #endif 423 424 bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); 425 426 temp = bus_space_read_1(iot, ioh, EEPROM_REG); 427 if (temp & 0x10) 428 bus_space_write_1(iot, ioh, EEPROM_REG, temp & ~0x10); 429 430 for (i=0; i<6; ++i) { 431 bus_space_write_1(iot, ioh, I_ADD(i), LLADDR(ifp->if_sadl)[i]); 432 } 433 434 temp = bus_space_read_1(iot, ioh, REG1); 435 bus_space_write_1(iot, ioh, REG1, 436 temp | XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | RCV_DISCARD_BAD); 437 438 temp = bus_space_read_1(iot, ioh, RECV_MODES_REG); 439 bus_space_write_1(iot, ioh, RECV_MODES_REG, temp | MATCH_BRDCST); 440 #ifdef IYDEBUG 441 printf("%s: RECV_MODES were %b set to %b\n", 442 sc->sc_dev.dv_xname, 443 temp, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA", 444 temp|MATCH_BRDCST, 445 "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA"); 446 #endif 447 448 449 delay(500000); /* for the hardware to test for the connector */ 450 451 temp = bus_space_read_1(iot, ioh, MEDIA_SELECT); 452 #ifdef IYDEBUG 453 printf("%s: media select was 0x%b ", sc->sc_dev.dv_xname, 454 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 455 #endif 456 temp = (temp & TEST_MODE_MASK); 457 458 switch(ifp->if_flags & (IFF_LINK0 | IFF_LINK1)) { 459 case IFF_LINK0: 460 temp &= ~ (BNC_BIT | TPE_BIT); 461 break; 462 463 case IFF_LINK1: 464 temp = (temp & ~TPE_BIT) | BNC_BIT; 465 break; 466 467 case IFF_LINK0|IFF_LINK1: 468 temp = (temp & ~BNC_BIT) | TPE_BIT; 469 break; 470 default: 471 /* nothing; leave as it is */ 472 } 473 474 475 bus_space_write_1(iot, ioh, MEDIA_SELECT, temp); 476 #ifdef IYDEBUG 477 printf("changed to 0x%b\n", 478 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 479 #endif 480 481 bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); 482 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS); 483 bus_space_write_1(iot, ioh, 0, BANK_SEL(1)); 484 485 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 486 bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 487 488 #ifdef IYDEBUG 489 printf("%s: int no was %b\n", sc->sc_dev.dv_xname, 490 temp, "\020\4bad_irq\010flash/boot present"); 491 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 492 printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname, 493 temp, "\020\4BAD IRQ\010flash/boot present"); 494 #endif 495 496 497 bus_space_write_1(iot, ioh, RCV_LOWER_LIMIT_REG, 0); 498 bus_space_write_1(iot, ioh, RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8); 499 bus_space_write_1(iot, ioh, XMT_LOWER_LIMIT_REG, sc->rx_size >> 8); 500 bus_space_write_1(iot, ioh, XMT_UPPER_LIMIT_REG, sc->sram >> 8); 501 502 temp = bus_space_read_1(iot, ioh, REG1); 503 #ifdef IYDEBUG 504 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 505 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 506 #endif 507 bus_space_write_1(iot, ioh, REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ 508 509 #ifdef IYDEBUG 510 temp = bus_space_read_1(iot, ioh, REG1); 511 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 512 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 513 #endif 514 515 bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); 516 517 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); 518 bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); /* clear ints */ 519 520 bus_space_write_2(iot, ioh, RCV_START_LOW, 0); 521 bus_space_write_2(iot, ioh, RCV_STOP_LOW, sc->rx_size - 2); 522 sc->rx_start = 0; 523 524 bus_space_write_1(iot, ioh, 0, SEL_RESET_CMD); 525 delay(200); 526 527 bus_space_write_2(iot, ioh, XMT_ADDR_REG, sc->rx_size); 528 529 sc->tx_start = sc->tx_end = sc->rx_size; 530 sc->tx_last = 0; 531 532 bus_space_write_1(iot, ioh, 0, RCV_ENABLE_CMD); 533 534 ifp->if_flags |= IFF_RUNNING; 535 ifp->if_flags &= ~IFF_OACTIVE; 536 } 537 538 void 539 iystart(ifp) 540 struct ifnet *ifp; 541 { 542 struct iy_softc *sc; 543 544 545 struct mbuf *m0, *m; 546 u_int len, pad, last, end; 547 u_int llen, residual; 548 int avail; 549 caddr_t data; 550 u_int16_t resval, stat; 551 bus_space_tag_t iot; 552 bus_space_handle_t ioh; 553 554 #ifdef IYDEBUG 555 printf("iystart called\n"); 556 #endif 557 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 558 return; 559 560 sc = ifp->if_softc; 561 iot = sc->sc_iot; 562 ioh = sc->sc_ioh; 563 564 while ((m0 = ifp->if_snd.ifq_head) != NULL) { 565 #ifdef IYDEBUG 566 printf("%s: trying to write another packet to the hardware\n", 567 sc->sc_dev.dv_xname); 568 #endif 569 570 /* We need to use m->m_pkthdr.len, so require the header */ 571 if ((m0->m_flags & M_PKTHDR) == 0) 572 panic("iystart: no header mbuf"); 573 574 len = m0->m_pkthdr.len; 575 pad = len & 1; 576 577 #ifdef IYDEBUG 578 printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len); 579 #endif 580 if (len < ETHER_MIN_LEN) { 581 pad = ETHER_MIN_LEN - len; 582 } 583 584 if (len + pad > ETHER_MAX_LEN) { 585 /* packet is obviously too large: toss it */ 586 ++ifp->if_oerrors; 587 IF_DEQUEUE(&ifp->if_snd, m0); 588 m_freem(m0); 589 continue; 590 } 591 592 #if NBPFILTER > 0 593 if (ifp->if_bpf) 594 bpf_mtap(ifp->if_bpf, m0); 595 #endif 596 597 avail = sc->tx_start - sc->tx_end; 598 if (avail <= 0) 599 avail += sc->tx_size; 600 601 #ifdef IYDEBUG 602 printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail); 603 #endif 604 /* 605 * we MUST RUN at splnet here --- 606 * XXX todo: or even turn off the boards ints ??? hm... 607 */ 608 609 /* See if there is room to put another packet in the buffer. */ 610 611 if ((len+pad+2*I595_XMT_HDRLEN) > avail) { 612 printf("%s: len = %d, avail = %d, setting OACTIVE\n", 613 sc->sc_dev.dv_xname, len, avail); 614 ifp->if_flags |= IFF_OACTIVE; 615 return; 616 } 617 618 /* we know it fits in the hardware now, so dequeue it */ 619 IF_DEQUEUE(&ifp->if_snd, m0); 620 621 last = sc->tx_end; 622 end = last + pad + len + I595_XMT_HDRLEN; 623 624 if (end >= sc->sram) { 625 if ((sc->sram - last) <= I595_XMT_HDRLEN) { 626 /* keep header in one piece */ 627 last = sc->rx_size; 628 end = last + pad + len + I595_XMT_HDRLEN; 629 } else 630 end -= sc->tx_size; 631 } 632 633 bus_space_write_2(iot, ioh, HOST_ADDR_REG, last); 634 bus_space_write_2(iot, ioh, MEM_PORT_REG, XMT_CMD); 635 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 636 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 637 bus_space_write_2(iot, ioh, MEM_PORT_REG, len + pad); 638 639 residual = resval = 0; 640 641 while ((m = m0)!=0) { 642 data = mtod(m, caddr_t); 643 llen = m->m_len; 644 if (residual) { 645 #ifdef IYDEBUG 646 printf("%s: merging residual with next mbuf.\n", 647 sc->sc_dev.dv_xname); 648 #endif 649 resval |= *data << 8; 650 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 651 --llen; 652 ++data; 653 } 654 if (llen > 1) 655 bus_space_write_multi_2(iot, ioh, MEM_PORT_REG, 656 data, llen>>1); 657 residual = llen & 1; 658 if (residual) { 659 resval = *(data + llen - 1); 660 #ifdef IYDEBUG 661 printf("%s: got odd mbuf to send.\n", 662 sc->sc_dev.dv_xname); 663 #endif 664 } 665 666 MFREE(m, m0); 667 } 668 669 if (residual) 670 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 671 672 pad >>= 1; 673 while (pad-- > 0) 674 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 675 676 #ifdef IYDEBUG 677 printf("%s: new last = 0x%x, end = 0x%x.\n", 678 sc->sc_dev.dv_xname, last, end); 679 printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", 680 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 681 #endif 682 683 if (sc->tx_start != sc->tx_end) { 684 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_COUNT); 685 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); 686 687 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); 688 bus_space_write_2(iot, ioh, MEM_PORT_REG, last); 689 bus_space_write_2(iot, ioh, MEM_PORT_REG, stat | CHAIN); 690 #ifdef IYDEBUG 691 printf("%s: setting 0x%x to 0x%x\n", 692 sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, 693 stat | CHAIN); 694 #endif 695 } 696 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); /* dummy read */ 697 698 /* XXX todo: enable ints here if disabled */ 699 700 ++ifp->if_opackets; 701 702 if (sc->tx_start == sc->tx_end) { 703 bus_space_write_2(iot, ioh, XMT_ADDR_REG, last); 704 bus_space_write_1(iot, ioh, 0, XMT_CMD); 705 sc->tx_start = last; 706 #ifdef IYDEBUG 707 printf("%s: writing 0x%x to XAR and giving XCMD\n", 708 sc->sc_dev.dv_xname, last); 709 #endif 710 } else { 711 bus_space_write_1(iot, ioh, 0, RESUME_XMT_CMD); 712 #ifdef IYDEBUG 713 printf("%s: giving RESUME_XCMD\n", 714 sc->sc_dev.dv_xname); 715 #endif 716 } 717 sc->tx_last = last; 718 sc->tx_end = end; 719 } 720 } 721 722 723 static __inline void 724 eepromwritebit(iot, ioh, what) 725 bus_space_tag_t iot; 726 bus_space_handle_t ioh; 727 int what; 728 { 729 bus_space_write_1(iot, ioh, EEPROM_REG, what); 730 delay(1); 731 bus_space_write_1(iot, ioh, EEPROM_REG, what|EESK); 732 delay(1); 733 bus_space_write_1(iot, ioh, EEPROM_REG, what); 734 delay(1); 735 } 736 737 static __inline int 738 eepromreadbit(iot, ioh) 739 bus_space_tag_t iot; 740 bus_space_handle_t ioh; 741 { 742 int b; 743 744 bus_space_write_1(iot, ioh, EEPROM_REG, EECS|EESK); 745 delay(1); 746 b = bus_space_read_1(iot, ioh, EEPROM_REG); 747 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); 748 delay(1); 749 750 return ((b & EEDO) != 0); 751 } 752 753 static u_int16_t 754 eepromread(iot, ioh, offset) 755 bus_space_tag_t iot; 756 bus_space_handle_t ioh; 757 int offset; 758 { 759 volatile int i; 760 volatile int j; 761 volatile u_int16_t readval; 762 763 bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); 764 delay(1); 765 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); /* XXXX??? */ 766 delay(1); 767 768 eepromwritebit(iot, ioh, EECS|EEDI); 769 eepromwritebit(iot, ioh, EECS|EEDI); 770 eepromwritebit(iot, ioh, EECS); 771 772 for (j=5; j>=0; --j) { 773 if ((offset>>j) & 1) 774 eepromwritebit(iot, ioh, EECS|EEDI); 775 else 776 eepromwritebit(iot, ioh, EECS); 777 } 778 779 for (readval=0, i=0; i<16; ++i) { 780 readval<<=1; 781 readval |= eepromreadbit(iot, ioh); 782 } 783 784 bus_space_write_1(iot, ioh, EEPROM_REG, 0|EESK); 785 delay(1); 786 bus_space_write_1(iot, ioh, EEPROM_REG, 0); 787 788 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 789 790 return readval; 791 } 792 793 /* 794 * Device timeout/watchdog routine. Entered if the device neglects to generate 795 * an interrupt after a transmit has been started on it. 796 */ 797 void 798 iywatchdog(ifp) 799 struct ifnet *ifp; 800 { 801 struct iy_softc *sc = ifp->if_softc; 802 803 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 804 ++sc->sc_ethercom.ec_if.if_oerrors; 805 iyreset(sc); 806 } 807 808 /* 809 * What to do upon receipt of an interrupt. 810 */ 811 int 812 iyintr(arg) 813 void *arg; 814 { 815 struct iy_softc *sc = arg; 816 bus_space_tag_t iot; 817 bus_space_handle_t ioh; 818 819 register u_short status; 820 821 iot = sc->sc_iot; 822 ioh = sc->sc_ioh; 823 824 status = bus_space_read_1(iot, ioh, STATUS_REG); 825 #ifdef IYDEBUG 826 if (status & ALL_INTS) { 827 printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, 828 "\020\1RX_STP\2RX\3TX\4EXEC"); 829 if (status & EXEC_INT) 830 printf(" event %b\n", bus_space_read_1(iot, ioh, 0), 831 "\020\6ABORT"); 832 else 833 printf("\n"); 834 } 835 #endif 836 if (((status & (RX_INT | TX_INT)) == 0)) 837 return 0; 838 839 if (status & RX_INT) { 840 iy_intr_rx(sc); 841 bus_space_write_1(iot, ioh, STATUS_REG, RX_INT); 842 } else if (status & TX_INT) { 843 iy_intr_tx(sc); 844 bus_space_write_1(iot, ioh, STATUS_REG, TX_INT); 845 } 846 847 #if NRND > 0 848 rnd_add_uint32(&sc->rnd_source, status); 849 #endif 850 851 return 1; 852 } 853 854 void 855 iyget(sc, iot, ioh, rxlen) 856 struct iy_softc *sc; 857 bus_space_tag_t iot; 858 bus_space_handle_t ioh; 859 int rxlen; 860 { 861 struct mbuf *m, *top, **mp; 862 struct ether_header *eh; 863 struct ifnet *ifp; 864 int len; 865 866 ifp = &sc->sc_ethercom.ec_if; 867 868 MGETHDR(m, M_DONTWAIT, MT_DATA); 869 if (m == 0) 870 goto dropped; 871 m->m_pkthdr.rcvif = ifp; 872 m->m_pkthdr.len = rxlen; 873 len = MHLEN; 874 top = 0; 875 mp = ⊤ 876 877 while (rxlen > 0) { 878 if (top) { 879 MGET(m, M_DONTWAIT, MT_DATA); 880 if (m == 0) { 881 m_freem(top); 882 goto dropped; 883 } 884 len = MLEN; 885 } 886 if (rxlen >= MINCLSIZE) { 887 MCLGET(m, M_DONTWAIT); 888 if ((m->m_flags & M_EXT) == 0) { 889 m_free(m); 890 m_freem(top); 891 goto dropped; 892 } 893 len = MCLBYTES; 894 } 895 len = min(rxlen, len); 896 if (len > 1) { 897 len &= ~1; 898 899 bus_space_read_multi_2(iot, ioh, MEM_PORT_REG, 900 mtod(m, caddr_t), len/2); 901 } else { 902 #ifdef IYDEBUG 903 printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); 904 #endif 905 *(mtod(m, caddr_t)) = bus_space_read_2(iot, ioh, 906 MEM_PORT_REG); 907 } 908 m->m_len = len; 909 rxlen -= len; 910 *mp = m; 911 mp = &m->m_next; 912 } 913 /* XXX receive the top here */ 914 ++ifp->if_ipackets; 915 916 eh = mtod(top, struct ether_header *); 917 918 #if NBPFILTER > 0 919 if (ifp->if_bpf) { 920 bpf_mtap(ifp->if_bpf, top); 921 if ((ifp->if_flags & IFF_PROMISC) && 922 (eh->ether_dhost[0] & 1) == 0 && 923 bcmp(eh->ether_dhost, 924 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 925 sizeof(eh->ether_dhost)) != 0) { 926 927 m_freem(top); 928 return; 929 } 930 } 931 #endif 932 m_adj(top, sizeof(struct ether_header)); 933 ether_input(ifp, eh, top); 934 return; 935 936 dropped: 937 ++ifp->if_ierrors; 938 return; 939 } 940 void 941 iy_intr_rx(sc) 942 struct iy_softc *sc; 943 { 944 struct ifnet *ifp; 945 bus_space_tag_t iot; 946 bus_space_handle_t ioh; 947 948 u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; 949 950 iot = sc->sc_iot; 951 ioh = sc->sc_ioh; 952 ifp = &sc->sc_ethercom.ec_if; 953 954 rxadrs = sc->rx_start; 955 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxadrs); 956 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 957 rxnext = 0; 958 959 while (rxevnt == RCV_DONE) { 960 rxstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 961 rxnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 962 rxlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 963 #ifdef IYDEBUG 964 printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", 965 sc->sc_dev.dv_xname, rxadrs, rxstatus, 966 "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" 967 "\014CRCERR\015LENERR\016RCVOK\020TYP", 968 rxnext, rxlen); 969 #endif 970 iyget(sc, iot, ioh, rxlen); 971 972 /* move stop address */ 973 bus_space_write_2(iot, ioh, RCV_STOP_LOW, 974 rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); 975 976 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxnext); 977 rxadrs = rxnext; 978 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 979 } 980 sc->rx_start = rxnext; 981 } 982 983 void 984 iy_intr_tx(sc) 985 struct iy_softc *sc; 986 { 987 bus_space_tag_t iot; 988 bus_space_handle_t ioh; 989 struct ifnet *ifp; 990 u_int txstatus, txstat2, txlen, txnext; 991 992 ifp = &sc->sc_ethercom.ec_if; 993 iot = sc->sc_iot; 994 ioh = sc->sc_ioh; 995 996 while (sc->tx_start != sc->tx_end) { 997 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_start); 998 txstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 999 if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) 1000 break; 1001 1002 txstat2 = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1003 txnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1004 txlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1005 #ifdef IYDEBUG 1006 printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", 1007 txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" 1008 "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", 1009 txnext, txlen); 1010 #endif 1011 if (txlen & CHAIN) 1012 sc->tx_start = txnext; 1013 else 1014 sc->tx_start = sc->tx_end; 1015 ifp->if_flags &= ~IFF_OACTIVE; 1016 1017 if ((txstat2 & 0x2000) == 0) 1018 ++ifp->if_oerrors; 1019 if (txstat2 & 0x000f) 1020 ifp->if_oerrors += txstat2 & 0x000f; 1021 } 1022 ifp->if_flags &= ~IFF_OACTIVE; 1023 } 1024 1025 #if 0 1026 /* 1027 * Compare two Ether/802 addresses for equality, inlined and unrolled for 1028 * speed. I'd love to have an inline assembler version of this... 1029 */ 1030 static inline int 1031 ether_equal(one, two) 1032 u_char *one, *two; 1033 { 1034 1035 if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || 1036 one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) 1037 return 0; 1038 return 1; 1039 } 1040 1041 /* 1042 * Check for a valid address. to_bpf is filled in with one of the following: 1043 * 0 -> BPF doesn't get this packet 1044 * 1 -> BPF does get this packet 1045 * 2 -> BPF does get this packet, but we don't 1046 * Return value is true if the packet is for us, and false otherwise. 1047 * 1048 * This routine is a mess, but it's also critical that it be as fast 1049 * as possible. It could be made cleaner if we can assume that the 1050 * only client which will fiddle with IFF_PROMISC is BPF. This is 1051 * probably a good assumption, but we do not make it here. (Yet.) 1052 */ 1053 static inline int 1054 check_eh(sc, eh, to_bpf) 1055 struct iy_softc *sc; 1056 struct ether_header *eh; 1057 int *to_bpf; 1058 { 1059 int i; 1060 1061 switch (sc->promisc) { 1062 case IFF_ALLMULTI: 1063 /* 1064 * Receiving all multicasts, but no unicasts except those 1065 * destined for us. 1066 */ 1067 #if NBPFILTER > 0 1068 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ 1069 #endif 1070 if (eh->ether_dhost[0] & 1) 1071 return 1; 1072 if (ether_equal(eh->ether_dhost, 1073 LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1074 return 1; 1075 return 0; 1076 1077 case IFF_PROMISC: 1078 /* 1079 * Receiving all packets. These need to be passed on to BPF. 1080 */ 1081 #if NBPFILTER > 0 1082 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1083 #endif 1084 /* If for us, accept and hand up to BPF */ 1085 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1086 return 1; 1087 1088 #if NBPFILTER > 0 1089 if (*to_bpf) 1090 *to_bpf = 2; /* we don't need to see it */ 1091 #endif 1092 1093 /* 1094 * Not a multicast, so BPF wants to see it but we don't. 1095 */ 1096 if (!(eh->ether_dhost[0] & 1)) 1097 return 1; 1098 1099 /* 1100 * If it's one of our multicast groups, accept it and pass it 1101 * up. 1102 */ 1103 for (i = 0; i < sc->mcast_count; i++) { 1104 if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { 1105 #if NBPFILTER > 0 1106 if (*to_bpf) 1107 *to_bpf = 1; 1108 #endif 1109 return 1; 1110 } 1111 } 1112 return 1; 1113 1114 case IFF_ALLMULTI | IFF_PROMISC: 1115 /* 1116 * Acting as a multicast router, and BPF running at the same 1117 * time. Whew! (Hope this is a fast machine...) 1118 */ 1119 #if NBPFILTER > 0 1120 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1121 #endif 1122 /* We want to see multicasts. */ 1123 if (eh->ether_dhost[0] & 1) 1124 return 1; 1125 1126 /* We want to see our own packets */ 1127 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1128 return 1; 1129 1130 /* Anything else goes to BPF but nothing else. */ 1131 #if NBPFILTER > 0 1132 if (*to_bpf) 1133 *to_bpf = 2; 1134 #endif 1135 return 1; 1136 1137 case 0: 1138 /* 1139 * Only accept unicast packets destined for us, or multicasts 1140 * for groups that we belong to. For now, we assume that the 1141 * '586 will only return packets that we asked it for. This 1142 * isn't strictly true (it uses hashing for the multicast 1143 * filter), but it will do in this case, and we want to get out 1144 * of here as quickly as possible. 1145 */ 1146 #if NBPFILTER > 0 1147 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1148 #endif 1149 return 1; 1150 } 1151 1152 #ifdef DIAGNOSTIC 1153 panic("check_eh: impossible"); 1154 #endif 1155 } 1156 #endif 1157 1158 int 1159 iyioctl(ifp, cmd, data) 1160 register struct ifnet *ifp; 1161 u_long cmd; 1162 caddr_t data; 1163 { 1164 struct iy_softc *sc; 1165 struct ifaddr *ifa; 1166 struct ifreq *ifr; 1167 int s, error = 0; 1168 1169 sc = ifp->if_softc; 1170 ifa = (struct ifaddr *)data; 1171 ifr = (struct ifreq *)data; 1172 1173 #ifdef IYDEBUG 1174 printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", 1175 ifp, ifp->if_xname, cmd, data); 1176 #endif 1177 1178 s = splimp(); 1179 1180 switch (cmd) { 1181 1182 case SIOCSIFADDR: 1183 ifp->if_flags |= IFF_UP; 1184 1185 switch (ifa->ifa_addr->sa_family) { 1186 #ifdef INET 1187 case AF_INET: 1188 iyinit(sc); 1189 arp_ifinit(ifp, ifa); 1190 break; 1191 #endif 1192 #ifdef NS 1193 /* XXX - This code is probably wrong. */ 1194 case AF_NS: 1195 { 1196 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1197 1198 if (ns_nullhost(*ina)) 1199 ina->x_host = *(union ns_host *) 1200 LLADDR(sc->sc_ethercom.ec_if.if_sadl); 1201 else 1202 bcopy(ina->x_host.c_host, 1203 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 1204 ETHER_ADDR_LEN); 1205 /* Set new address. */ 1206 iyinit(sc); 1207 break; 1208 } 1209 #endif /* NS */ 1210 default: 1211 iyinit(sc); 1212 break; 1213 } 1214 break; 1215 1216 case SIOCSIFFLAGS: 1217 sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 1218 if ((ifp->if_flags & IFF_UP) == 0 && 1219 (ifp->if_flags & IFF_RUNNING) != 0) { 1220 /* 1221 * If interface is marked down and it is running, then 1222 * stop it. 1223 */ 1224 iystop(sc); 1225 ifp->if_flags &= ~IFF_RUNNING; 1226 } else if ((ifp->if_flags & IFF_UP) != 0 && 1227 (ifp->if_flags & IFF_RUNNING) == 0) { 1228 /* 1229 * If interface is marked up and it is stopped, then 1230 * start it. 1231 */ 1232 iyinit(sc); 1233 } else { 1234 /* 1235 * Reset the interface to pick up changes in any other 1236 * flags that affect hardware registers. 1237 */ 1238 iystop(sc); 1239 iyinit(sc); 1240 } 1241 #ifdef IYDEBUGX 1242 if (ifp->if_flags & IFF_DEBUG) 1243 sc->sc_debug = IFY_ALL; 1244 else 1245 sc->sc_debug = 0; 1246 #endif 1247 break; 1248 1249 #if 0 /* XXX */ 1250 case SIOCADDMULTI: 1251 case SIOCDELMULTI: 1252 error = (cmd == SIOCADDMULTI) ? 1253 ether_addmulti(ifr, &sc->sc_ethercom): 1254 ether_delmulti(ifr, &sc->sc_ethercom); 1255 1256 if (error == ENETRESET) { 1257 /* 1258 * Multicast list has changed; set the hardware filter 1259 * accordingly. 1260 */ 1261 iy_mc_reset(sc); /* XXX */ 1262 error = 0; 1263 } 1264 break; 1265 #endif 1266 default: 1267 error = EINVAL; 1268 } 1269 splx(s); 1270 return error; 1271 } 1272 1273 #if 0 1274 static void 1275 iy_mc_reset(sc) 1276 struct iy_softc *sc; 1277 { 1278 struct ether_multi *enm; 1279 struct ether_multistep step; 1280 1281 /* 1282 * Step through the list of addresses. 1283 */ 1284 sc->mcast_count = 0; 1285 ETHER_FIRST_MULTI(step, &sc->sc_ethercom, enm); 1286 while (enm) { 1287 if (sc->mcast_count >= MAXMCAST || 1288 bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { 1289 sc->sc_ethercom.ec_if.if_flags |= IFF_ALLMULTI; 1290 iyioctl(&sc->sc_ethercom.ec_if, SIOCSIFFLAGS, 1291 (void *)0); 1292 goto setflag; 1293 } 1294 1295 bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); 1296 sc->mcast_count++; 1297 ETHER_NEXT_MULTI(step, enm); 1298 } 1299 setflag: 1300 sc->want_mcsetup = 1; 1301 } 1302 1303 #ifdef IYDEBUG 1304 void 1305 print_rbd(rbd) 1306 volatile struct ie_recv_buf_desc *rbd; 1307 { 1308 1309 printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" 1310 "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, 1311 rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, 1312 rbd->mbz); 1313 } 1314 #endif 1315 #endif 1316 1317 void 1318 iyprobemem(sc) 1319 struct iy_softc *sc; 1320 { 1321 bus_space_tag_t iot; 1322 bus_space_handle_t ioh; 1323 int testing; 1324 1325 iot = sc->sc_iot; 1326 ioh = sc->sc_ioh; 1327 1328 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 1329 delay(1); 1330 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 4096-2); 1331 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1332 1333 for (testing=65536; testing >= 4096; testing >>= 1) { 1334 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1335 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xdead); 1336 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1337 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xdead) { 1338 #ifdef IYMEMDEBUG 1339 printf("%s: Didn't keep 0xdead at 0x%x\n", 1340 sc->sc_dev.dv_xname, testing-2); 1341 #endif 1342 continue; 1343 } 1344 1345 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1346 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xbeef); 1347 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1348 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xbeef) { 1349 #ifdef IYMEMDEBUG 1350 printf("%s: Didn't keep 0xbeef at 0x%x\n", 1351 sc->sc_dev.dv_xname, testing-2); 1352 #endif 1353 continue; 1354 } 1355 1356 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1357 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1358 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing >> 1); 1359 bus_space_write_2(iot, ioh, MEM_PORT_REG, testing >> 1); 1360 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1361 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) == (testing >> 1)) { 1362 #ifdef IYMEMDEBUG 1363 printf("%s: 0x%x alias of 0x0\n", 1364 sc->sc_dev.dv_xname, testing >> 1); 1365 #endif 1366 continue; 1367 } 1368 1369 break; 1370 } 1371 1372 sc->sram = testing; 1373 1374 switch(testing) { 1375 case 65536: 1376 /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ 1377 sc->rx_size = 44*1024; 1378 break; 1379 1380 case 32768: 1381 /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ 1382 sc->rx_size = 22*1024; 1383 break; 1384 1385 case 16384: 1386 /* 1 NFS packet + overhead RX, 4 big packets TX */ 1387 sc->rx_size = 10*1024; 1388 break; 1389 default: 1390 sc->rx_size = testing/2; 1391 break; 1392 } 1393 sc->tx_size = testing - sc->rx_size; 1394 } 1395 1396 static int 1397 eepromreadall(iot, ioh, wordp, maxi) 1398 bus_space_tag_t iot; 1399 bus_space_handle_t ioh; 1400 u_int16_t *wordp; 1401 int maxi; 1402 { 1403 int i; 1404 u_int16_t checksum, tmp; 1405 1406 checksum = 0; 1407 1408 for (i=0; i<EEPP_LENGTH; ++i) { 1409 tmp = eepromread(iot, ioh, i); 1410 checksum += tmp; 1411 if (i<maxi) 1412 wordp[i] = tmp; 1413 } 1414 1415 if (checksum != EEPP_CHKSUM) { 1416 #ifdef IYDEBUG 1417 printf("wrong EEPROM checksum 0x%x should be 0x%x\n", 1418 checksum, EEPP_CHKSUM); 1419 #endif 1420 return 1; 1421 } 1422 return 0; 1423 } 1424
Indexes created Thu Sep 25 16:09:42 GMT 2025