if_iy.c revision 1.15
1 /* $NetBSD: if_iy.c,v 1.15 1997/10/18 14:09:52 drochner 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 panic("Can't bus_space_map in iyattach"); 279 280 sc->sc_iot = iot; 281 sc->sc_ioh = ioh; 282 283 sc->mappedirq = eepro_revirqmap[ia->ia_irq]; 284 285 /* now let's reset the chip */ 286 287 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 288 delay(200); 289 290 iyprobemem(sc); 291 292 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 293 ifp->if_softc = sc; 294 ifp->if_start = iystart; 295 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 296 /* XXX todo: | IFF_MULTICAST */ 297 298 ifp->if_ioctl = iyioctl; 299 ifp->if_watchdog = iywatchdog; 300 301 (void)eepromreadall(iot, ioh, eaddr, 8); 302 sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev; 303 304 #ifdef DIAGNOSTICS 305 if ((eaddr[EEPPEther0] != 306 eepromread(iot, ioh, EEPPEther0a)) && 307 (eaddr[EEPPEther1] != 308 eepromread(iot, ioh, EEPPEther1a)) && 309 (eaddr[EEPPEther2] != 310 eepromread(iot, ioh, EEPPEther2a))) 311 312 printf("EEPROM Ethernet address differs from copy\n"); 313 #endif 314 315 myaddr[1] = eaddr[EEPPEther0] & 0xFF; 316 myaddr[0] = eaddr[EEPPEther0] >> 8; 317 myaddr[3] = eaddr[EEPPEther1] & 0xFF; 318 myaddr[2] = eaddr[EEPPEther1] >> 8; 319 myaddr[5] = eaddr[EEPPEther2] & 0xFF; 320 myaddr[4] = eaddr[EEPPEther2] >> 8; 321 322 /* Attach the interface. */ 323 if_attach(ifp); 324 ether_ifattach(ifp, myaddr); 325 printf(": address %s, rev. %d, %d kB\n", 326 ether_sprintf(myaddr), 327 sc->hard_vers, sc->sram/1024); 328 329 eirq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; 330 if (eirq != ia->ia_irq) 331 printf("%s: EEPROM irq setting %d ignored\n", 332 sc->sc_dev.dv_xname, eirq); 333 334 #if NBPFILTER > 0 335 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 336 #endif 337 338 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 339 IPL_NET, iyintr, sc); 340 341 #if NRND > 0 342 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, RND_TYPE_NET); 343 #endif 344 345 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 346 bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 347 } 348 349 void 350 iystop(sc) 351 struct iy_softc *sc; 352 { 353 bus_space_tag_t iot; 354 bus_space_handle_t ioh; 355 #ifdef IYDEBUG 356 u_int p, v; 357 #endif 358 359 iot = sc->sc_iot; 360 ioh = sc->sc_ioh; 361 362 bus_space_write_1(iot, ioh, COMMAND_REG, RCV_DISABLE_CMD); 363 364 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS); 365 bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); 366 367 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 368 delay(200); 369 #ifdef IYDEBUG 370 printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n", 371 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 372 p = sc->tx_last; 373 if (!p) 374 p = sc->tx_start; 375 do { 376 bus_space_write_2(iot, ioh, HOST_ADDR_REG, p); 377 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 378 printf("0x%04x: %b ", p, v, "\020\006Ab\010Dn"); 379 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 380 printf("0x%b", v, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL"); 381 p = bus_space_read_2(iot, ioh, MEM_PORT_REG); 382 printf(" 0x%04x", p); 383 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 384 printf(" 0x%b\n", v, "\020\020Ch"); 385 386 } while (v & 0x8000); 387 #endif 388 sc->tx_start = sc->tx_end = sc->rx_size; 389 sc->tx_last = 0; 390 sc->sc_ethercom.ec_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 391 } 392 393 void 394 iyreset(sc) 395 struct iy_softc *sc; 396 { 397 int s; 398 s = splimp(); 399 iystop(sc); 400 iyinit(sc); 401 splx(s); 402 } 403 404 void 405 iyinit(sc) 406 struct iy_softc *sc; 407 { 408 int i; 409 unsigned temp; 410 struct ifnet *ifp; 411 bus_space_tag_t iot; 412 bus_space_handle_t ioh; 413 414 iot = sc->sc_iot; 415 ioh = sc->sc_ioh; 416 417 ifp = &sc->sc_ethercom.ec_if; 418 #ifdef IYDEBUG 419 printf("ifp is %p\n", ifp); 420 #endif 421 422 bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); 423 424 temp = bus_space_read_1(iot, ioh, EEPROM_REG); 425 if (temp & 0x10) 426 bus_space_write_1(iot, ioh, EEPROM_REG, temp & ~0x10); 427 428 for (i=0; i<6; ++i) { 429 bus_space_write_1(iot, ioh, I_ADD(i), LLADDR(ifp->if_sadl)[i]); 430 } 431 432 temp = bus_space_read_1(iot, ioh, REG1); 433 bus_space_write_1(iot, ioh, REG1, 434 temp | XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | RCV_DISCARD_BAD); 435 436 temp = bus_space_read_1(iot, ioh, RECV_MODES_REG); 437 bus_space_write_1(iot, ioh, RECV_MODES_REG, temp | MATCH_BRDCST); 438 #ifdef IYDEBUG 439 printf("%s: RECV_MODES were %b set to %b\n", 440 sc->sc_dev.dv_xname, 441 temp, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA", 442 temp|MATCH_BRDCST, 443 "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA"); 444 #endif 445 446 447 delay(500000); /* for the hardware to test for the connector */ 448 449 temp = bus_space_read_1(iot, ioh, MEDIA_SELECT); 450 #ifdef IYDEBUG 451 printf("%s: media select was 0x%b ", sc->sc_dev.dv_xname, 452 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 453 #endif 454 temp = (temp & TEST_MODE_MASK); 455 456 switch(ifp->if_flags & (IFF_LINK0 | IFF_LINK1)) { 457 case IFF_LINK0: 458 temp &= ~ (BNC_BIT | TPE_BIT); 459 break; 460 461 case IFF_LINK1: 462 temp = (temp & ~TPE_BIT) | BNC_BIT; 463 break; 464 465 case IFF_LINK0|IFF_LINK1: 466 temp = (temp & ~BNC_BIT) | TPE_BIT; 467 break; 468 default: 469 /* nothing; leave as it is */ 470 } 471 472 473 bus_space_write_1(iot, ioh, MEDIA_SELECT, temp); 474 #ifdef IYDEBUG 475 printf("changed to 0x%b\n", 476 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 477 #endif 478 479 bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); 480 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS); 481 bus_space_write_1(iot, ioh, 0, BANK_SEL(1)); 482 483 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 484 bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 485 486 #ifdef IYDEBUG 487 printf("%s: int no was %b\n", sc->sc_dev.dv_xname, 488 temp, "\020\4bad_irq\010flash/boot present"); 489 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 490 printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname, 491 temp, "\020\4BAD IRQ\010flash/boot present"); 492 #endif 493 494 495 bus_space_write_1(iot, ioh, RCV_LOWER_LIMIT_REG, 0); 496 bus_space_write_1(iot, ioh, RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8); 497 bus_space_write_1(iot, ioh, XMT_LOWER_LIMIT_REG, sc->rx_size >> 8); 498 bus_space_write_1(iot, ioh, XMT_UPPER_LIMIT_REG, sc->sram >> 8); 499 500 temp = bus_space_read_1(iot, ioh, REG1); 501 #ifdef IYDEBUG 502 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 503 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 504 #endif 505 bus_space_write_1(iot, ioh, REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ 506 507 #ifdef IYDEBUG 508 temp = bus_space_read_1(iot, ioh, REG1); 509 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 510 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 511 #endif 512 513 bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); 514 515 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); 516 bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); /* clear ints */ 517 518 bus_space_write_2(iot, ioh, RCV_START_LOW, 0); 519 bus_space_write_2(iot, ioh, RCV_STOP_LOW, sc->rx_size - 2); 520 sc->rx_start = 0; 521 522 bus_space_write_1(iot, ioh, 0, SEL_RESET_CMD); 523 delay(200); 524 525 bus_space_write_2(iot, ioh, XMT_ADDR_REG, sc->rx_size); 526 527 sc->tx_start = sc->tx_end = sc->rx_size; 528 sc->tx_last = 0; 529 530 bus_space_write_1(iot, ioh, 0, RCV_ENABLE_CMD); 531 532 ifp->if_flags |= IFF_RUNNING; 533 ifp->if_flags &= ~IFF_OACTIVE; 534 } 535 536 void 537 iystart(ifp) 538 struct ifnet *ifp; 539 { 540 struct iy_softc *sc; 541 542 543 struct mbuf *m0, *m; 544 u_int len, pad, last, end; 545 u_int llen, residual; 546 int avail; 547 caddr_t data; 548 u_int16_t resval, stat; 549 bus_space_tag_t iot; 550 bus_space_handle_t ioh; 551 552 #ifdef IYDEBUG 553 printf("iystart called\n"); 554 #endif 555 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 556 return; 557 558 sc = ifp->if_softc; 559 iot = sc->sc_iot; 560 ioh = sc->sc_ioh; 561 562 while ((m0 = ifp->if_snd.ifq_head) != NULL) { 563 #ifdef IYDEBUG 564 printf("%s: trying to write another packet to the hardware\n", 565 sc->sc_dev.dv_xname); 566 #endif 567 568 /* We need to use m->m_pkthdr.len, so require the header */ 569 if ((m0->m_flags & M_PKTHDR) == 0) 570 panic("iystart: no header mbuf"); 571 572 len = m0->m_pkthdr.len; 573 pad = len & 1; 574 575 #ifdef IYDEBUG 576 printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len); 577 #endif 578 if (len < ETHER_MIN_LEN) { 579 pad = ETHER_MIN_LEN - len; 580 } 581 582 if (len + pad > ETHER_MAX_LEN) { 583 /* packet is obviously too large: toss it */ 584 ++ifp->if_oerrors; 585 IF_DEQUEUE(&ifp->if_snd, m0); 586 m_freem(m0); 587 continue; 588 } 589 590 #if NBPFILTER > 0 591 if (ifp->if_bpf) 592 bpf_mtap(ifp->if_bpf, m0); 593 #endif 594 595 avail = sc->tx_start - sc->tx_end; 596 if (avail <= 0) 597 avail += sc->tx_size; 598 599 #ifdef IYDEBUG 600 printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail); 601 #endif 602 /* 603 * we MUST RUN at splnet here --- 604 * XXX todo: or even turn off the boards ints ??? hm... 605 */ 606 607 /* See if there is room to put another packet in the buffer. */ 608 609 if ((len+pad+2*I595_XMT_HDRLEN) > avail) { 610 printf("%s: len = %d, avail = %d, setting OACTIVE\n", 611 sc->sc_dev.dv_xname, len, avail); 612 ifp->if_flags |= IFF_OACTIVE; 613 return; 614 } 615 616 /* we know it fits in the hardware now, so dequeue it */ 617 IF_DEQUEUE(&ifp->if_snd, m0); 618 619 last = sc->tx_end; 620 end = last + pad + len + I595_XMT_HDRLEN; 621 622 if (end >= sc->sram) { 623 if ((sc->sram - last) <= I595_XMT_HDRLEN) { 624 /* keep header in one piece */ 625 last = sc->rx_size; 626 end = last + pad + len + I595_XMT_HDRLEN; 627 } else 628 end -= sc->tx_size; 629 } 630 631 bus_space_write_2(iot, ioh, HOST_ADDR_REG, last); 632 bus_space_write_2(iot, ioh, MEM_PORT_REG, XMT_CMD); 633 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 634 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 635 bus_space_write_2(iot, ioh, MEM_PORT_REG, len + pad); 636 637 residual = resval = 0; 638 639 while ((m = m0)!=0) { 640 data = mtod(m, caddr_t); 641 llen = m->m_len; 642 if (residual) { 643 #ifdef IYDEBUG 644 printf("%s: merging residual with next mbuf.\n", 645 sc->sc_dev.dv_xname); 646 #endif 647 resval |= *data << 8; 648 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 649 --llen; 650 ++data; 651 } 652 if (llen > 1) 653 bus_space_write_multi_2(iot, ioh, MEM_PORT_REG, 654 data, llen>>1); 655 residual = llen & 1; 656 if (residual) { 657 resval = *(data + llen - 1); 658 #ifdef IYDEBUG 659 printf("%s: got odd mbuf to send.\n", 660 sc->sc_dev.dv_xname); 661 #endif 662 } 663 664 MFREE(m, m0); 665 } 666 667 if (residual) 668 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 669 670 pad >>= 1; 671 while (pad-- > 0) 672 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 673 674 #ifdef IYDEBUG 675 printf("%s: new last = 0x%x, end = 0x%x.\n", 676 sc->sc_dev.dv_xname, last, end); 677 printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", 678 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 679 #endif 680 681 if (sc->tx_start != sc->tx_end) { 682 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_COUNT); 683 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); 684 685 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); 686 bus_space_write_2(iot, ioh, MEM_PORT_REG, last); 687 bus_space_write_2(iot, ioh, MEM_PORT_REG, stat | CHAIN); 688 #ifdef IYDEBUG 689 printf("%s: setting 0x%x to 0x%x\n", 690 sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, 691 stat | CHAIN); 692 #endif 693 } 694 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); /* dummy read */ 695 696 /* XXX todo: enable ints here if disabled */ 697 698 ++ifp->if_opackets; 699 700 if (sc->tx_start == sc->tx_end) { 701 bus_space_write_2(iot, ioh, XMT_ADDR_REG, last); 702 bus_space_write_1(iot, ioh, 0, XMT_CMD); 703 sc->tx_start = last; 704 #ifdef IYDEBUG 705 printf("%s: writing 0x%x to XAR and giving XCMD\n", 706 sc->sc_dev.dv_xname, last); 707 #endif 708 } else { 709 bus_space_write_1(iot, ioh, 0, RESUME_XMT_CMD); 710 #ifdef IYDEBUG 711 printf("%s: giving RESUME_XCMD\n", 712 sc->sc_dev.dv_xname); 713 #endif 714 } 715 sc->tx_last = last; 716 sc->tx_end = end; 717 } 718 } 719 720 721 static __inline void 722 eepromwritebit(iot, ioh, what) 723 bus_space_tag_t iot; 724 bus_space_handle_t ioh; 725 int what; 726 { 727 bus_space_write_1(iot, ioh, EEPROM_REG, what); 728 delay(1); 729 bus_space_write_1(iot, ioh, EEPROM_REG, what|EESK); 730 delay(1); 731 bus_space_write_1(iot, ioh, EEPROM_REG, what); 732 delay(1); 733 } 734 735 static __inline int 736 eepromreadbit(iot, ioh) 737 bus_space_tag_t iot; 738 bus_space_handle_t ioh; 739 { 740 int b; 741 742 bus_space_write_1(iot, ioh, EEPROM_REG, EECS|EESK); 743 delay(1); 744 b = bus_space_read_1(iot, ioh, EEPROM_REG); 745 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); 746 delay(1); 747 748 return ((b & EEDO) != 0); 749 } 750 751 static u_int16_t 752 eepromread(iot, ioh, offset) 753 bus_space_tag_t iot; 754 bus_space_handle_t ioh; 755 int offset; 756 { 757 volatile int i; 758 volatile int j; 759 volatile u_int16_t readval; 760 761 bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); 762 delay(1); 763 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); /* XXXX??? */ 764 delay(1); 765 766 eepromwritebit(iot, ioh, EECS|EEDI); 767 eepromwritebit(iot, ioh, EECS|EEDI); 768 eepromwritebit(iot, ioh, EECS); 769 770 for (j=5; j>=0; --j) { 771 if ((offset>>j) & 1) 772 eepromwritebit(iot, ioh, EECS|EEDI); 773 else 774 eepromwritebit(iot, ioh, EECS); 775 } 776 777 for (readval=0, i=0; i<16; ++i) { 778 readval<<=1; 779 readval |= eepromreadbit(iot, ioh); 780 } 781 782 bus_space_write_1(iot, ioh, EEPROM_REG, 0|EESK); 783 delay(1); 784 bus_space_write_1(iot, ioh, EEPROM_REG, 0); 785 786 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 787 788 return readval; 789 } 790 791 /* 792 * Device timeout/watchdog routine. Entered if the device neglects to generate 793 * an interrupt after a transmit has been started on it. 794 */ 795 void 796 iywatchdog(ifp) 797 struct ifnet *ifp; 798 { 799 struct iy_softc *sc = ifp->if_softc; 800 801 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 802 ++sc->sc_ethercom.ec_if.if_oerrors; 803 iyreset(sc); 804 } 805 806 /* 807 * What to do upon receipt of an interrupt. 808 */ 809 int 810 iyintr(arg) 811 void *arg; 812 { 813 struct iy_softc *sc = arg; 814 bus_space_tag_t iot; 815 bus_space_handle_t ioh; 816 817 register u_short status; 818 819 iot = sc->sc_iot; 820 ioh = sc->sc_ioh; 821 822 status = bus_space_read_1(iot, ioh, STATUS_REG); 823 #ifdef IYDEBUG 824 if (status & ALL_INTS) { 825 printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, 826 "\020\1RX_STP\2RX\3TX\4EXEC"); 827 if (status & EXEC_INT) 828 printf(" event %b\n", bus_space_read_1(iot, ioh, 0), 829 "\020\6ABORT"); 830 else 831 printf("\n"); 832 } 833 #endif 834 if (((status & (RX_INT | TX_INT)) == 0)) 835 return 0; 836 837 if (status & RX_INT) { 838 iy_intr_rx(sc); 839 bus_space_write_1(iot, ioh, STATUS_REG, RX_INT); 840 } else if (status & TX_INT) { 841 iy_intr_tx(sc); 842 bus_space_write_1(iot, ioh, STATUS_REG, TX_INT); 843 } 844 845 #if NRND > 0 846 rnd_add_uint32(&sc->rnd_source, status); 847 #endif 848 849 return 1; 850 } 851 852 void 853 iyget(sc, iot, ioh, rxlen) 854 struct iy_softc *sc; 855 bus_space_tag_t iot; 856 bus_space_handle_t ioh; 857 int rxlen; 858 { 859 struct mbuf *m, *top, **mp; 860 struct ether_header *eh; 861 struct ifnet *ifp; 862 int len; 863 864 ifp = &sc->sc_ethercom.ec_if; 865 866 MGETHDR(m, M_DONTWAIT, MT_DATA); 867 if (m == 0) 868 goto dropped; 869 m->m_pkthdr.rcvif = ifp; 870 m->m_pkthdr.len = rxlen; 871 len = MHLEN; 872 top = 0; 873 mp = ⊤ 874 875 while (rxlen > 0) { 876 if (top) { 877 MGET(m, M_DONTWAIT, MT_DATA); 878 if (m == 0) { 879 m_freem(top); 880 goto dropped; 881 } 882 len = MLEN; 883 } 884 if (rxlen >= MINCLSIZE) { 885 MCLGET(m, M_DONTWAIT); 886 if ((m->m_flags & M_EXT) == 0) { 887 m_free(m); 888 m_freem(top); 889 goto dropped; 890 } 891 len = MCLBYTES; 892 } 893 len = min(rxlen, len); 894 if (len > 1) { 895 len &= ~1; 896 897 bus_space_read_multi_2(iot, ioh, MEM_PORT_REG, 898 mtod(m, caddr_t), len/2); 899 } else { 900 #ifdef IYDEBUG 901 printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); 902 #endif 903 *(mtod(m, caddr_t)) = bus_space_read_2(iot, ioh, 904 MEM_PORT_REG); 905 } 906 m->m_len = len; 907 rxlen -= len; 908 *mp = m; 909 mp = &m->m_next; 910 } 911 /* XXX receive the top here */ 912 ++ifp->if_ipackets; 913 914 eh = mtod(top, struct ether_header *); 915 916 #if NBPFILTER > 0 917 if (ifp->if_bpf) { 918 bpf_mtap(ifp->if_bpf, top); 919 if ((ifp->if_flags & IFF_PROMISC) && 920 (eh->ether_dhost[0] & 1) == 0 && 921 bcmp(eh->ether_dhost, 922 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 923 sizeof(eh->ether_dhost)) != 0) { 924 925 m_freem(top); 926 return; 927 } 928 } 929 #endif 930 m_adj(top, sizeof(struct ether_header)); 931 ether_input(ifp, eh, top); 932 return; 933 934 dropped: 935 ++ifp->if_ierrors; 936 return; 937 } 938 void 939 iy_intr_rx(sc) 940 struct iy_softc *sc; 941 { 942 struct ifnet *ifp; 943 bus_space_tag_t iot; 944 bus_space_handle_t ioh; 945 946 u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; 947 948 iot = sc->sc_iot; 949 ioh = sc->sc_ioh; 950 ifp = &sc->sc_ethercom.ec_if; 951 952 rxadrs = sc->rx_start; 953 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxadrs); 954 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 955 rxnext = 0; 956 957 while (rxevnt == RCV_DONE) { 958 rxstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 959 rxnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 960 rxlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 961 #ifdef IYDEBUG 962 printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", 963 sc->sc_dev.dv_xname, rxadrs, rxstatus, 964 "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" 965 "\014CRCERR\015LENERR\016RCVOK\020TYP", 966 rxnext, rxlen); 967 #endif 968 iyget(sc, iot, ioh, rxlen); 969 970 /* move stop address */ 971 bus_space_write_2(iot, ioh, RCV_STOP_LOW, 972 rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); 973 974 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxnext); 975 rxadrs = rxnext; 976 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 977 } 978 sc->rx_start = rxnext; 979 } 980 981 void 982 iy_intr_tx(sc) 983 struct iy_softc *sc; 984 { 985 bus_space_tag_t iot; 986 bus_space_handle_t ioh; 987 struct ifnet *ifp; 988 u_int txstatus, txstat2, txlen, txnext; 989 990 ifp = &sc->sc_ethercom.ec_if; 991 iot = sc->sc_iot; 992 ioh = sc->sc_ioh; 993 994 while (sc->tx_start != sc->tx_end) { 995 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_start); 996 txstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 997 if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) 998 break; 999 1000 txstat2 = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1001 txnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1002 txlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1003 #ifdef IYDEBUG 1004 printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", 1005 txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" 1006 "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", 1007 txnext, txlen); 1008 #endif 1009 if (txlen & CHAIN) 1010 sc->tx_start = txnext; 1011 else 1012 sc->tx_start = sc->tx_end; 1013 ifp->if_flags &= ~IFF_OACTIVE; 1014 1015 if ((txstat2 & 0x2000) == 0) 1016 ++ifp->if_oerrors; 1017 if (txstat2 & 0x000f) 1018 ifp->if_oerrors += txstat2 & 0x000f; 1019 } 1020 ifp->if_flags &= ~IFF_OACTIVE; 1021 } 1022 1023 #if 0 1024 /* 1025 * Compare two Ether/802 addresses for equality, inlined and unrolled for 1026 * speed. I'd love to have an inline assembler version of this... 1027 */ 1028 static inline int 1029 ether_equal(one, two) 1030 u_char *one, *two; 1031 { 1032 1033 if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || 1034 one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) 1035 return 0; 1036 return 1; 1037 } 1038 1039 /* 1040 * Check for a valid address. to_bpf is filled in with one of the following: 1041 * 0 -> BPF doesn't get this packet 1042 * 1 -> BPF does get this packet 1043 * 2 -> BPF does get this packet, but we don't 1044 * Return value is true if the packet is for us, and false otherwise. 1045 * 1046 * This routine is a mess, but it's also critical that it be as fast 1047 * as possible. It could be made cleaner if we can assume that the 1048 * only client which will fiddle with IFF_PROMISC is BPF. This is 1049 * probably a good assumption, but we do not make it here. (Yet.) 1050 */ 1051 static inline int 1052 check_eh(sc, eh, to_bpf) 1053 struct iy_softc *sc; 1054 struct ether_header *eh; 1055 int *to_bpf; 1056 { 1057 int i; 1058 1059 switch (sc->promisc) { 1060 case IFF_ALLMULTI: 1061 /* 1062 * Receiving all multicasts, but no unicasts except those 1063 * destined for us. 1064 */ 1065 #if NBPFILTER > 0 1066 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ 1067 #endif 1068 if (eh->ether_dhost[0] & 1) 1069 return 1; 1070 if (ether_equal(eh->ether_dhost, 1071 LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1072 return 1; 1073 return 0; 1074 1075 case IFF_PROMISC: 1076 /* 1077 * Receiving all packets. These need to be passed on to BPF. 1078 */ 1079 #if NBPFILTER > 0 1080 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1081 #endif 1082 /* If for us, accept and hand up to BPF */ 1083 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1084 return 1; 1085 1086 #if NBPFILTER > 0 1087 if (*to_bpf) 1088 *to_bpf = 2; /* we don't need to see it */ 1089 #endif 1090 1091 /* 1092 * Not a multicast, so BPF wants to see it but we don't. 1093 */ 1094 if (!(eh->ether_dhost[0] & 1)) 1095 return 1; 1096 1097 /* 1098 * If it's one of our multicast groups, accept it and pass it 1099 * up. 1100 */ 1101 for (i = 0; i < sc->mcast_count; i++) { 1102 if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { 1103 #if NBPFILTER > 0 1104 if (*to_bpf) 1105 *to_bpf = 1; 1106 #endif 1107 return 1; 1108 } 1109 } 1110 return 1; 1111 1112 case IFF_ALLMULTI | IFF_PROMISC: 1113 /* 1114 * Acting as a multicast router, and BPF running at the same 1115 * time. Whew! (Hope this is a fast machine...) 1116 */ 1117 #if NBPFILTER > 0 1118 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1119 #endif 1120 /* We want to see multicasts. */ 1121 if (eh->ether_dhost[0] & 1) 1122 return 1; 1123 1124 /* We want to see our own packets */ 1125 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1126 return 1; 1127 1128 /* Anything else goes to BPF but nothing else. */ 1129 #if NBPFILTER > 0 1130 if (*to_bpf) 1131 *to_bpf = 2; 1132 #endif 1133 return 1; 1134 1135 case 0: 1136 /* 1137 * Only accept unicast packets destined for us, or multicasts 1138 * for groups that we belong to. For now, we assume that the 1139 * '586 will only return packets that we asked it for. This 1140 * isn't strictly true (it uses hashing for the multicast 1141 * filter), but it will do in this case, and we want to get out 1142 * of here as quickly as possible. 1143 */ 1144 #if NBPFILTER > 0 1145 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1146 #endif 1147 return 1; 1148 } 1149 1150 #ifdef DIAGNOSTIC 1151 panic("check_eh: impossible"); 1152 #endif 1153 } 1154 #endif 1155 1156 int 1157 iyioctl(ifp, cmd, data) 1158 register struct ifnet *ifp; 1159 u_long cmd; 1160 caddr_t data; 1161 { 1162 struct iy_softc *sc; 1163 struct ifaddr *ifa; 1164 struct ifreq *ifr; 1165 int s, error = 0; 1166 1167 sc = ifp->if_softc; 1168 ifa = (struct ifaddr *)data; 1169 ifr = (struct ifreq *)data; 1170 1171 #ifdef IYDEBUG 1172 printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", 1173 ifp, ifp->if_xname, cmd, data); 1174 #endif 1175 1176 s = splimp(); 1177 1178 switch (cmd) { 1179 1180 case SIOCSIFADDR: 1181 ifp->if_flags |= IFF_UP; 1182 1183 switch (ifa->ifa_addr->sa_family) { 1184 #ifdef INET 1185 case AF_INET: 1186 iyinit(sc); 1187 arp_ifinit(ifp, ifa); 1188 break; 1189 #endif 1190 #ifdef NS 1191 /* XXX - This code is probably wrong. */ 1192 case AF_NS: 1193 { 1194 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1195 1196 if (ns_nullhost(*ina)) 1197 ina->x_host = *(union ns_host *) 1198 LLADDR(sc->sc_ethercom.ec_if.if_sadl); 1199 else 1200 bcopy(ina->x_host.c_host, 1201 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 1202 ETHER_ADDR_LEN); 1203 /* Set new address. */ 1204 iyinit(sc); 1205 break; 1206 } 1207 #endif /* NS */ 1208 default: 1209 iyinit(sc); 1210 break; 1211 } 1212 break; 1213 1214 case SIOCSIFFLAGS: 1215 sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 1216 if ((ifp->if_flags & IFF_UP) == 0 && 1217 (ifp->if_flags & IFF_RUNNING) != 0) { 1218 /* 1219 * If interface is marked down and it is running, then 1220 * stop it. 1221 */ 1222 iystop(sc); 1223 ifp->if_flags &= ~IFF_RUNNING; 1224 } else if ((ifp->if_flags & IFF_UP) != 0 && 1225 (ifp->if_flags & IFF_RUNNING) == 0) { 1226 /* 1227 * If interface is marked up and it is stopped, then 1228 * start it. 1229 */ 1230 iyinit(sc); 1231 } else { 1232 /* 1233 * Reset the interface to pick up changes in any other 1234 * flags that affect hardware registers. 1235 */ 1236 iystop(sc); 1237 iyinit(sc); 1238 } 1239 #ifdef IYDEBUGX 1240 if (ifp->if_flags & IFF_DEBUG) 1241 sc->sc_debug = IFY_ALL; 1242 else 1243 sc->sc_debug = 0; 1244 #endif 1245 break; 1246 1247 #if 0 /* XXX */ 1248 case SIOCADDMULTI: 1249 case SIOCDELMULTI: 1250 error = (cmd == SIOCADDMULTI) ? 1251 ether_addmulti(ifr, &sc->sc_ethercom): 1252 ether_delmulti(ifr, &sc->sc_ethercom); 1253 1254 if (error == ENETRESET) { 1255 /* 1256 * Multicast list has changed; set the hardware filter 1257 * accordingly. 1258 */ 1259 iy_mc_reset(sc); /* XXX */ 1260 error = 0; 1261 } 1262 break; 1263 #endif 1264 default: 1265 error = EINVAL; 1266 } 1267 splx(s); 1268 return error; 1269 } 1270 1271 #if 0 1272 static void 1273 iy_mc_reset(sc) 1274 struct iy_softc *sc; 1275 { 1276 struct ether_multi *enm; 1277 struct ether_multistep step; 1278 1279 /* 1280 * Step through the list of addresses. 1281 */ 1282 sc->mcast_count = 0; 1283 ETHER_FIRST_MULTI(step, &sc->sc_ethercom, enm); 1284 while (enm) { 1285 if (sc->mcast_count >= MAXMCAST || 1286 bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { 1287 sc->sc_ethercom.ec_if.if_flags |= IFF_ALLMULTI; 1288 iyioctl(&sc->sc_ethercom.ec_if, SIOCSIFFLAGS, 1289 (void *)0); 1290 goto setflag; 1291 } 1292 1293 bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); 1294 sc->mcast_count++; 1295 ETHER_NEXT_MULTI(step, enm); 1296 } 1297 setflag: 1298 sc->want_mcsetup = 1; 1299 } 1300 1301 #ifdef IYDEBUG 1302 void 1303 print_rbd(rbd) 1304 volatile struct ie_recv_buf_desc *rbd; 1305 { 1306 1307 printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" 1308 "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, 1309 rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, 1310 rbd->mbz); 1311 } 1312 #endif 1313 #endif 1314 1315 void 1316 iyprobemem(sc) 1317 struct iy_softc *sc; 1318 { 1319 bus_space_tag_t iot; 1320 bus_space_handle_t ioh; 1321 int testing; 1322 1323 iot = sc->sc_iot; 1324 ioh = sc->sc_ioh; 1325 1326 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 1327 delay(1); 1328 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 4096-2); 1329 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1330 1331 for (testing=65536; testing >= 4096; testing >>= 1) { 1332 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1333 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xdead); 1334 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1335 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xdead) { 1336 #ifdef IYMEMDEBUG 1337 printf("%s: Didn't keep 0xdead at 0x%x\n", 1338 sc->sc_dev.dv_xname, testing-2); 1339 #endif 1340 continue; 1341 } 1342 1343 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1344 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xbeef); 1345 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1346 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xbeef) { 1347 #ifdef IYMEMDEBUG 1348 printf("%s: Didn't keep 0xbeef at 0x%x\n", 1349 sc->sc_dev.dv_xname, testing-2); 1350 #endif 1351 continue; 1352 } 1353 1354 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1355 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1356 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing >> 1); 1357 bus_space_write_2(iot, ioh, MEM_PORT_REG, testing >> 1); 1358 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1359 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) == (testing >> 1)) { 1360 #ifdef IYMEMDEBUG 1361 printf("%s: 0x%x alias of 0x0\n", 1362 sc->sc_dev.dv_xname, testing >> 1); 1363 #endif 1364 continue; 1365 } 1366 1367 break; 1368 } 1369 1370 sc->sram = testing; 1371 1372 switch(testing) { 1373 case 65536: 1374 /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ 1375 sc->rx_size = 44*1024; 1376 break; 1377 1378 case 32768: 1379 /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ 1380 sc->rx_size = 22*1024; 1381 break; 1382 1383 case 16384: 1384 /* 1 NFS packet + overhead RX, 4 big packets TX */ 1385 sc->rx_size = 10*1024; 1386 break; 1387 default: 1388 sc->rx_size = testing/2; 1389 break; 1390 } 1391 sc->tx_size = testing - sc->rx_size; 1392 } 1393 1394 static int 1395 eepromreadall(iot, ioh, wordp, maxi) 1396 bus_space_tag_t iot; 1397 bus_space_handle_t ioh; 1398 u_int16_t *wordp; 1399 int maxi; 1400 { 1401 int i; 1402 u_int16_t checksum, tmp; 1403 1404 checksum = 0; 1405 1406 for (i=0; i<EEPP_LENGTH; ++i) { 1407 tmp = eepromread(iot, ioh, i); 1408 checksum += tmp; 1409 if (i<maxi) 1410 wordp[i] = tmp; 1411 } 1412 1413 if (checksum != EEPP_CHKSUM) { 1414 #ifdef IYDEBUG 1415 printf("wrong EEPROM checksum 0x%x should be 0x%x\n", 1416 checksum, EEPP_CHKSUM); 1417 #endif 1418 return 1; 1419 } 1420 return 0; 1421 } 1422
Indexes created Thu Sep 25 16:09:42 GMT 2025