if_iy.c revision 1.16.2.1
1 /* $NetBSD: if_iy.c,v 1.16.2.1 1998/02/03 16:00:48 is 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 #ifdef IYDEBUG 613 printf("%s: len = %d, avail = %d, setting OACTIVE\n", 614 sc->sc_dev.dv_xname, len, avail); 615 #endif 616 ifp->if_flags |= IFF_OACTIVE; 617 return; 618 } 619 620 /* we know it fits in the hardware now, so dequeue it */ 621 IF_DEQUEUE(&ifp->if_snd, m0); 622 623 last = sc->tx_end; 624 end = last + pad + len + I595_XMT_HDRLEN; 625 626 if (end >= sc->sram) { 627 if ((sc->sram - last) <= I595_XMT_HDRLEN) { 628 /* keep header in one piece */ 629 last = sc->rx_size; 630 end = last + pad + len + I595_XMT_HDRLEN; 631 } else 632 end -= sc->tx_size; 633 } 634 635 bus_space_write_2(iot, ioh, HOST_ADDR_REG, last); 636 bus_space_write_2(iot, ioh, MEM_PORT_REG, XMT_CMD); 637 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 638 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 639 bus_space_write_2(iot, ioh, MEM_PORT_REG, len + pad); 640 641 residual = resval = 0; 642 643 while ((m = m0)!=0) { 644 data = mtod(m, caddr_t); 645 llen = m->m_len; 646 if (residual) { 647 #ifdef IYDEBUG 648 printf("%s: merging residual with next mbuf.\n", 649 sc->sc_dev.dv_xname); 650 #endif 651 resval |= *data << 8; 652 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 653 --llen; 654 ++data; 655 } 656 if (llen > 1) 657 bus_space_write_multi_2(iot, ioh, MEM_PORT_REG, 658 data, llen>>1); 659 residual = llen & 1; 660 if (residual) { 661 resval = *(data + llen - 1); 662 #ifdef IYDEBUG 663 printf("%s: got odd mbuf to send.\n", 664 sc->sc_dev.dv_xname); 665 #endif 666 } 667 668 MFREE(m, m0); 669 } 670 671 if (residual) 672 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 673 674 pad >>= 1; 675 while (pad-- > 0) 676 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 677 678 #ifdef IYDEBUG 679 printf("%s: new last = 0x%x, end = 0x%x.\n", 680 sc->sc_dev.dv_xname, last, end); 681 printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", 682 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 683 #endif 684 685 if (sc->tx_start != sc->tx_end) { 686 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_COUNT); 687 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); 688 689 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); 690 bus_space_write_2(iot, ioh, MEM_PORT_REG, last); 691 bus_space_write_2(iot, ioh, MEM_PORT_REG, stat | CHAIN); 692 #ifdef IYDEBUG 693 printf("%s: setting 0x%x to 0x%x\n", 694 sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, 695 stat | CHAIN); 696 #endif 697 } 698 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); /* dummy read */ 699 700 /* XXX todo: enable ints here if disabled */ 701 702 ++ifp->if_opackets; 703 704 if (sc->tx_start == sc->tx_end) { 705 bus_space_write_2(iot, ioh, XMT_ADDR_REG, last); 706 bus_space_write_1(iot, ioh, 0, XMT_CMD); 707 sc->tx_start = last; 708 #ifdef IYDEBUG 709 printf("%s: writing 0x%x to XAR and giving XCMD\n", 710 sc->sc_dev.dv_xname, last); 711 #endif 712 } else { 713 bus_space_write_1(iot, ioh, 0, RESUME_XMT_CMD); 714 #ifdef IYDEBUG 715 printf("%s: giving RESUME_XCMD\n", 716 sc->sc_dev.dv_xname); 717 #endif 718 } 719 sc->tx_last = last; 720 sc->tx_end = end; 721 } 722 } 723 724 725 static __inline void 726 eepromwritebit(iot, ioh, what) 727 bus_space_tag_t iot; 728 bus_space_handle_t ioh; 729 int what; 730 { 731 bus_space_write_1(iot, ioh, EEPROM_REG, what); 732 delay(1); 733 bus_space_write_1(iot, ioh, EEPROM_REG, what|EESK); 734 delay(1); 735 bus_space_write_1(iot, ioh, EEPROM_REG, what); 736 delay(1); 737 } 738 739 static __inline int 740 eepromreadbit(iot, ioh) 741 bus_space_tag_t iot; 742 bus_space_handle_t ioh; 743 { 744 int b; 745 746 bus_space_write_1(iot, ioh, EEPROM_REG, EECS|EESK); 747 delay(1); 748 b = bus_space_read_1(iot, ioh, EEPROM_REG); 749 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); 750 delay(1); 751 752 return ((b & EEDO) != 0); 753 } 754 755 static u_int16_t 756 eepromread(iot, ioh, offset) 757 bus_space_tag_t iot; 758 bus_space_handle_t ioh; 759 int offset; 760 { 761 volatile int i; 762 volatile int j; 763 volatile u_int16_t readval; 764 765 bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); 766 delay(1); 767 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); /* XXXX??? */ 768 delay(1); 769 770 eepromwritebit(iot, ioh, EECS|EEDI); 771 eepromwritebit(iot, ioh, EECS|EEDI); 772 eepromwritebit(iot, ioh, EECS); 773 774 for (j=5; j>=0; --j) { 775 if ((offset>>j) & 1) 776 eepromwritebit(iot, ioh, EECS|EEDI); 777 else 778 eepromwritebit(iot, ioh, EECS); 779 } 780 781 for (readval=0, i=0; i<16; ++i) { 782 readval<<=1; 783 readval |= eepromreadbit(iot, ioh); 784 } 785 786 bus_space_write_1(iot, ioh, EEPROM_REG, 0|EESK); 787 delay(1); 788 bus_space_write_1(iot, ioh, EEPROM_REG, 0); 789 790 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 791 792 return readval; 793 } 794 795 /* 796 * Device timeout/watchdog routine. Entered if the device neglects to generate 797 * an interrupt after a transmit has been started on it. 798 */ 799 void 800 iywatchdog(ifp) 801 struct ifnet *ifp; 802 { 803 struct iy_softc *sc = ifp->if_softc; 804 805 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 806 ++sc->sc_ethercom.ec_if.if_oerrors; 807 iyreset(sc); 808 } 809 810 /* 811 * What to do upon receipt of an interrupt. 812 */ 813 int 814 iyintr(arg) 815 void *arg; 816 { 817 struct iy_softc *sc = arg; 818 bus_space_tag_t iot; 819 bus_space_handle_t ioh; 820 821 register u_short status; 822 823 iot = sc->sc_iot; 824 ioh = sc->sc_ioh; 825 826 status = bus_space_read_1(iot, ioh, STATUS_REG); 827 #ifdef IYDEBUG 828 if (status & ALL_INTS) { 829 printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, 830 "\020\1RX_STP\2RX\3TX\4EXEC"); 831 if (status & EXEC_INT) 832 printf(" event %b\n", bus_space_read_1(iot, ioh, 0), 833 "\020\6ABORT"); 834 else 835 printf("\n"); 836 } 837 #endif 838 if (((status & (RX_INT | TX_INT)) == 0)) 839 return 0; 840 841 if (status & RX_INT) { 842 iy_intr_rx(sc); 843 bus_space_write_1(iot, ioh, STATUS_REG, RX_INT); 844 } else if (status & TX_INT) { 845 iy_intr_tx(sc); 846 bus_space_write_1(iot, ioh, STATUS_REG, TX_INT); 847 } 848 849 #if NRND > 0 850 rnd_add_uint32(&sc->rnd_source, status); 851 #endif 852 853 return 1; 854 } 855 856 void 857 iyget(sc, iot, ioh, rxlen) 858 struct iy_softc *sc; 859 bus_space_tag_t iot; 860 bus_space_handle_t ioh; 861 int rxlen; 862 { 863 struct mbuf *m, *top, **mp; 864 struct ether_header *eh; 865 struct ifnet *ifp; 866 int len; 867 868 ifp = &sc->sc_ethercom.ec_if; 869 870 MGETHDR(m, M_DONTWAIT, MT_DATA); 871 if (m == 0) 872 goto dropped; 873 m->m_pkthdr.rcvif = ifp; 874 m->m_pkthdr.len = rxlen; 875 len = MHLEN; 876 top = 0; 877 mp = ⊤ 878 879 while (rxlen > 0) { 880 if (top) { 881 MGET(m, M_DONTWAIT, MT_DATA); 882 if (m == 0) { 883 m_freem(top); 884 goto dropped; 885 } 886 len = MLEN; 887 } 888 if (rxlen >= MINCLSIZE) { 889 MCLGET(m, M_DONTWAIT); 890 if ((m->m_flags & M_EXT) == 0) { 891 m_free(m); 892 m_freem(top); 893 goto dropped; 894 } 895 len = MCLBYTES; 896 } 897 len = min(rxlen, len); 898 if (len > 1) { 899 len &= ~1; 900 901 bus_space_read_multi_2(iot, ioh, MEM_PORT_REG, 902 mtod(m, caddr_t), len/2); 903 } else { 904 #ifdef IYDEBUG 905 printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); 906 #endif 907 *(mtod(m, caddr_t)) = bus_space_read_2(iot, ioh, 908 MEM_PORT_REG); 909 } 910 m->m_len = len; 911 rxlen -= len; 912 *mp = m; 913 mp = &m->m_next; 914 } 915 /* XXX receive the top here */ 916 ++ifp->if_ipackets; 917 918 eh = mtod(top, struct ether_header *); 919 920 #if NBPFILTER > 0 921 if (ifp->if_bpf) { 922 bpf_mtap(ifp->if_bpf, top); 923 if ((ifp->if_flags & IFF_PROMISC) && 924 (eh->ether_dhost[0] & 1) == 0 && 925 bcmp(eh->ether_dhost, 926 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 927 sizeof(eh->ether_dhost)) != 0) { 928 929 m_freem(top); 930 return; 931 } 932 } 933 #endif 934 m_adj(top, sizeof(struct ether_header)); 935 ether_input(ifp, eh, top); 936 return; 937 938 dropped: 939 ++ifp->if_ierrors; 940 return; 941 } 942 void 943 iy_intr_rx(sc) 944 struct iy_softc *sc; 945 { 946 struct ifnet *ifp; 947 bus_space_tag_t iot; 948 bus_space_handle_t ioh; 949 950 u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; 951 952 iot = sc->sc_iot; 953 ioh = sc->sc_ioh; 954 ifp = &sc->sc_ethercom.ec_if; 955 956 rxadrs = sc->rx_start; 957 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxadrs); 958 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 959 rxnext = 0; 960 961 while (rxevnt == RCV_DONE) { 962 rxstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 963 rxnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 964 rxlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 965 #ifdef IYDEBUG 966 printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", 967 sc->sc_dev.dv_xname, rxadrs, rxstatus, 968 "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" 969 "\014CRCERR\015LENERR\016RCVOK\020TYP", 970 rxnext, rxlen); 971 #endif 972 iyget(sc, iot, ioh, rxlen); 973 974 /* move stop address */ 975 bus_space_write_2(iot, ioh, RCV_STOP_LOW, 976 rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); 977 978 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxnext); 979 rxadrs = rxnext; 980 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 981 } 982 sc->rx_start = rxnext; 983 } 984 985 void 986 iy_intr_tx(sc) 987 struct iy_softc *sc; 988 { 989 bus_space_tag_t iot; 990 bus_space_handle_t ioh; 991 struct ifnet *ifp; 992 u_int txstatus, txstat2, txlen, txnext; 993 994 ifp = &sc->sc_ethercom.ec_if; 995 iot = sc->sc_iot; 996 ioh = sc->sc_ioh; 997 998 while (sc->tx_start != sc->tx_end) { 999 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_start); 1000 txstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1001 if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) 1002 break; 1003 1004 txstat2 = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1005 txnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1006 txlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1007 #ifdef IYDEBUG 1008 printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", 1009 txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" 1010 "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", 1011 txnext, txlen); 1012 #endif 1013 if (txlen & CHAIN) 1014 sc->tx_start = txnext; 1015 else 1016 sc->tx_start = sc->tx_end; 1017 ifp->if_flags &= ~IFF_OACTIVE; 1018 1019 if ((txstat2 & 0x2000) == 0) 1020 ++ifp->if_oerrors; 1021 if (txstat2 & 0x000f) 1022 ifp->if_oerrors += txstat2 & 0x000f; 1023 } 1024 ifp->if_flags &= ~IFF_OACTIVE; 1025 } 1026 1027 #if 0 1028 /* 1029 * Compare two Ether/802 addresses for equality, inlined and unrolled for 1030 * speed. I'd love to have an inline assembler version of this... 1031 */ 1032 static inline int 1033 ether_equal(one, two) 1034 u_char *one, *two; 1035 { 1036 1037 if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || 1038 one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) 1039 return 0; 1040 return 1; 1041 } 1042 1043 /* 1044 * Check for a valid address. to_bpf is filled in with one of the following: 1045 * 0 -> BPF doesn't get this packet 1046 * 1 -> BPF does get this packet 1047 * 2 -> BPF does get this packet, but we don't 1048 * Return value is true if the packet is for us, and false otherwise. 1049 * 1050 * This routine is a mess, but it's also critical that it be as fast 1051 * as possible. It could be made cleaner if we can assume that the 1052 * only client which will fiddle with IFF_PROMISC is BPF. This is 1053 * probably a good assumption, but we do not make it here. (Yet.) 1054 */ 1055 static inline int 1056 check_eh(sc, eh, to_bpf) 1057 struct iy_softc *sc; 1058 struct ether_header *eh; 1059 int *to_bpf; 1060 { 1061 int i; 1062 1063 switch (sc->promisc) { 1064 case IFF_ALLMULTI: 1065 /* 1066 * Receiving all multicasts, but no unicasts except those 1067 * destined for us. 1068 */ 1069 #if NBPFILTER > 0 1070 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ 1071 #endif 1072 if (eh->ether_dhost[0] & 1) 1073 return 1; 1074 if (ether_equal(eh->ether_dhost, 1075 LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1076 return 1; 1077 return 0; 1078 1079 case IFF_PROMISC: 1080 /* 1081 * Receiving all packets. These need to be passed on to BPF. 1082 */ 1083 #if NBPFILTER > 0 1084 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1085 #endif 1086 /* If for us, accept and hand up to BPF */ 1087 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1088 return 1; 1089 1090 #if NBPFILTER > 0 1091 if (*to_bpf) 1092 *to_bpf = 2; /* we don't need to see it */ 1093 #endif 1094 1095 /* 1096 * Not a multicast, so BPF wants to see it but we don't. 1097 */ 1098 if (!(eh->ether_dhost[0] & 1)) 1099 return 1; 1100 1101 /* 1102 * If it's one of our multicast groups, accept it and pass it 1103 * up. 1104 */ 1105 for (i = 0; i < sc->mcast_count; i++) { 1106 if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { 1107 #if NBPFILTER > 0 1108 if (*to_bpf) 1109 *to_bpf = 1; 1110 #endif 1111 return 1; 1112 } 1113 } 1114 return 1; 1115 1116 case IFF_ALLMULTI | IFF_PROMISC: 1117 /* 1118 * Acting as a multicast router, and BPF running at the same 1119 * time. Whew! (Hope this is a fast machine...) 1120 */ 1121 #if NBPFILTER > 0 1122 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1123 #endif 1124 /* We want to see multicasts. */ 1125 if (eh->ether_dhost[0] & 1) 1126 return 1; 1127 1128 /* We want to see our own packets */ 1129 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1130 return 1; 1131 1132 /* Anything else goes to BPF but nothing else. */ 1133 #if NBPFILTER > 0 1134 if (*to_bpf) 1135 *to_bpf = 2; 1136 #endif 1137 return 1; 1138 1139 case 0: 1140 /* 1141 * Only accept unicast packets destined for us, or multicasts 1142 * for groups that we belong to. For now, we assume that the 1143 * '586 will only return packets that we asked it for. This 1144 * isn't strictly true (it uses hashing for the multicast 1145 * filter), but it will do in this case, and we want to get out 1146 * of here as quickly as possible. 1147 */ 1148 #if NBPFILTER > 0 1149 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1150 #endif 1151 return 1; 1152 } 1153 1154 #ifdef DIAGNOSTIC 1155 panic("check_eh: impossible"); 1156 #endif 1157 } 1158 #endif 1159 1160 int 1161 iyioctl(ifp, cmd, data) 1162 register struct ifnet *ifp; 1163 u_long cmd; 1164 caddr_t data; 1165 { 1166 struct iy_softc *sc; 1167 struct ifaddr *ifa; 1168 struct ifreq *ifr; 1169 int s, error = 0; 1170 1171 sc = ifp->if_softc; 1172 ifa = (struct ifaddr *)data; 1173 ifr = (struct ifreq *)data; 1174 1175 #ifdef IYDEBUG 1176 printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", 1177 ifp, ifp->if_xname, cmd, data); 1178 #endif 1179 1180 s = splimp(); 1181 1182 switch (cmd) { 1183 1184 case SIOCSIFADDR: 1185 ifp->if_flags |= IFF_UP; 1186 1187 switch (ifa->ifa_addr->sa_family) { 1188 #ifdef INET 1189 case AF_INET: 1190 iyinit(sc); 1191 arp_ifinit(ifp, ifa); 1192 break; 1193 #endif 1194 #ifdef NS 1195 /* XXX - This code is probably wrong. */ 1196 case AF_NS: 1197 { 1198 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1199 1200 if (ns_nullhost(*ina)) 1201 ina->x_host = *(union ns_host *) 1202 LLADDR(sc->sc_ethercom.ec_if.if_sadl); 1203 else 1204 bcopy(ina->x_host.c_host, 1205 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 1206 ETHER_ADDR_LEN); 1207 /* Set new address. */ 1208 iyinit(sc); 1209 break; 1210 } 1211 #endif /* NS */ 1212 default: 1213 iyinit(sc); 1214 break; 1215 } 1216 break; 1217 1218 case SIOCSIFFLAGS: 1219 sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 1220 if ((ifp->if_flags & IFF_UP) == 0 && 1221 (ifp->if_flags & IFF_RUNNING) != 0) { 1222 /* 1223 * If interface is marked down and it is running, then 1224 * stop it. 1225 */ 1226 iystop(sc); 1227 ifp->if_flags &= ~IFF_RUNNING; 1228 } else if ((ifp->if_flags & IFF_UP) != 0 && 1229 (ifp->if_flags & IFF_RUNNING) == 0) { 1230 /* 1231 * If interface is marked up and it is stopped, then 1232 * start it. 1233 */ 1234 iyinit(sc); 1235 } else { 1236 /* 1237 * Reset the interface to pick up changes in any other 1238 * flags that affect hardware registers. 1239 */ 1240 iystop(sc); 1241 iyinit(sc); 1242 } 1243 #ifdef IYDEBUGX 1244 if (ifp->if_flags & IFF_DEBUG) 1245 sc->sc_debug = IFY_ALL; 1246 else 1247 sc->sc_debug = 0; 1248 #endif 1249 break; 1250 1251 #if 0 /* XXX */ 1252 case SIOCADDMULTI: 1253 case SIOCDELMULTI: 1254 error = (cmd == SIOCADDMULTI) ? 1255 ether_addmulti(ifr, &sc->sc_ethercom): 1256 ether_delmulti(ifr, &sc->sc_ethercom); 1257 1258 if (error == ENETRESET) { 1259 /* 1260 * Multicast list has changed; set the hardware filter 1261 * accordingly. 1262 */ 1263 iy_mc_reset(sc); /* XXX */ 1264 error = 0; 1265 } 1266 break; 1267 #endif 1268 default: 1269 error = EINVAL; 1270 } 1271 splx(s); 1272 return error; 1273 } 1274 1275 #if 0 1276 static void 1277 iy_mc_reset(sc) 1278 struct iy_softc *sc; 1279 { 1280 struct ether_multi *enm; 1281 struct ether_multistep step; 1282 1283 /* 1284 * Step through the list of addresses. 1285 */ 1286 sc->mcast_count = 0; 1287 ETHER_FIRST_MULTI(step, &sc->sc_ethercom, enm); 1288 while (enm) { 1289 if (sc->mcast_count >= MAXMCAST || 1290 bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { 1291 sc->sc_ethercom.ec_if.if_flags |= IFF_ALLMULTI; 1292 iyioctl(&sc->sc_ethercom.ec_if, SIOCSIFFLAGS, 1293 (void *)0); 1294 goto setflag; 1295 } 1296 1297 bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); 1298 sc->mcast_count++; 1299 ETHER_NEXT_MULTI(step, enm); 1300 } 1301 setflag: 1302 sc->want_mcsetup = 1; 1303 } 1304 1305 #ifdef IYDEBUG 1306 void 1307 print_rbd(rbd) 1308 volatile struct ie_recv_buf_desc *rbd; 1309 { 1310 1311 printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" 1312 "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, 1313 rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, 1314 rbd->mbz); 1315 } 1316 #endif 1317 #endif 1318 1319 void 1320 iyprobemem(sc) 1321 struct iy_softc *sc; 1322 { 1323 bus_space_tag_t iot; 1324 bus_space_handle_t ioh; 1325 int testing; 1326 1327 iot = sc->sc_iot; 1328 ioh = sc->sc_ioh; 1329 1330 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 1331 delay(1); 1332 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 4096-2); 1333 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1334 1335 for (testing=65536; testing >= 4096; testing >>= 1) { 1336 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1337 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xdead); 1338 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1339 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xdead) { 1340 #ifdef IYMEMDEBUG 1341 printf("%s: Didn't keep 0xdead at 0x%x\n", 1342 sc->sc_dev.dv_xname, testing-2); 1343 #endif 1344 continue; 1345 } 1346 1347 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1348 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xbeef); 1349 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1350 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xbeef) { 1351 #ifdef IYMEMDEBUG 1352 printf("%s: Didn't keep 0xbeef at 0x%x\n", 1353 sc->sc_dev.dv_xname, testing-2); 1354 #endif 1355 continue; 1356 } 1357 1358 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1359 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1360 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing >> 1); 1361 bus_space_write_2(iot, ioh, MEM_PORT_REG, testing >> 1); 1362 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1363 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) == (testing >> 1)) { 1364 #ifdef IYMEMDEBUG 1365 printf("%s: 0x%x alias of 0x0\n", 1366 sc->sc_dev.dv_xname, testing >> 1); 1367 #endif 1368 continue; 1369 } 1370 1371 break; 1372 } 1373 1374 sc->sram = testing; 1375 1376 switch(testing) { 1377 case 65536: 1378 /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ 1379 sc->rx_size = 44*1024; 1380 break; 1381 1382 case 32768: 1383 /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ 1384 sc->rx_size = 22*1024; 1385 break; 1386 1387 case 16384: 1388 /* 1 NFS packet + overhead RX, 4 big packets TX */ 1389 sc->rx_size = 10*1024; 1390 break; 1391 default: 1392 sc->rx_size = testing/2; 1393 break; 1394 } 1395 sc->tx_size = testing - sc->rx_size; 1396 } 1397 1398 static int 1399 eepromreadall(iot, ioh, wordp, maxi) 1400 bus_space_tag_t iot; 1401 bus_space_handle_t ioh; 1402 u_int16_t *wordp; 1403 int maxi; 1404 { 1405 int i; 1406 u_int16_t checksum, tmp; 1407 1408 checksum = 0; 1409 1410 for (i=0; i<EEPP_LENGTH; ++i) { 1411 tmp = eepromread(iot, ioh, i); 1412 checksum += tmp; 1413 if (i<maxi) 1414 wordp[i] = tmp; 1415 } 1416 1417 if (checksum != EEPP_CHKSUM) { 1418 #ifdef IYDEBUG 1419 printf("wrong EEPROM checksum 0x%x should be 0x%x\n", 1420 checksum, EEPP_CHKSUM); 1421 #endif 1422 return 1; 1423 } 1424 return 0; 1425 } 1426
Indexes created Wed Oct 01 15:09:59 GMT 2025