if_iy.c revision 1.9.4.6
1 /* $NetBSD: if_iy.c,v 1.9.4.6 1997/02/27 19:17:37 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 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/mbuf.h> 41 #include <sys/buf.h> 42 #include <sys/protosw.h> 43 #include <sys/socket.h> 44 #include <sys/ioctl.h> 45 #include <sys/errno.h> 46 #include <sys/syslog.h> 47 #include <sys/device.h> 48 49 #include <net/if.h> 50 #include <net/if_types.h> 51 #include <net/if_dl.h> 52 53 #include <net/if_ether.h> 54 55 #if NBPFILTER > 0 56 #include <net/bpf.h> 57 #include <net/bpfdesc.h> 58 #endif 59 60 #ifdef INET 61 #include <netinet/in.h> 62 #include <netinet/in_systm.h> 63 #include <netinet/in_var.h> 64 #include <netinet/ip.h> 65 #include <netinet/if_ether.h> 66 #endif 67 68 #ifdef NS 69 #include <netns/ns.h> 70 #include <netns/ns_if.h> 71 #endif 72 73 #include <vm/vm.h> 74 75 #include <machine/cpu.h> 76 #include <machine/bus.h> 77 #include <machine/intr.h> 78 79 #include <dev/isa/isareg.h> 80 #include <dev/isa/isavar.h> 81 #include <dev/ic/i82595reg.h> 82 83 #define ETHER_MIN_LEN (ETHERMIN + sizeof(struct ether_header) + 4) 84 #define ETHER_MAX_LEN (ETHERMTU + sizeof(struct ether_header) + 4) 85 86 /* 87 * Ethernet status, per interface. 88 */ 89 struct iy_softc { 90 struct device sc_dev; 91 void *sc_ih; 92 93 bus_space_tag_t sc_iot; 94 bus_space_handle_t sc_ioh; 95 96 struct ethercom sc_ethercom; 97 98 #define MAX_MBS 8 99 struct mbuf *mb[MAX_MBS]; 100 int next_mb, last_mb; 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 }; 117 118 void iywatchdog __P((struct ifnet *)); 119 int iyioctl __P((struct ifnet *, u_long, caddr_t)); 120 int iyintr __P((void *)); 121 void iyinit __P((struct iy_softc *)); 122 void iystop __P((struct iy_softc *)); 123 void iystart __P((struct ifnet *)); 124 125 void iy_intr_rx __P((struct iy_softc *)); 126 void iy_intr_tx __P((struct iy_softc *)); 127 128 void iyreset __P((struct iy_softc *)); 129 void iy_readframe __P((struct iy_softc *, int)); 130 void iy_drop_packet_buffer __P((struct iy_softc *)); 131 void iy_find_mem_size __P((struct iy_softc *)); 132 void iyrint __P((struct iy_softc *)); 133 void iytint __P((struct iy_softc *)); 134 void iyxmit __P((struct iy_softc *)); 135 void iyget __P((struct iy_softc *, bus_space_tag_t, bus_space_handle_t, int)); 136 void iymbuffill __P((void *)); 137 void iymbufempty __P((void *)); 138 void iyprobemem __P((struct iy_softc *)); 139 static __inline void eepromwritebit __P((bus_space_tag_t, bus_space_handle_t, 140 int)); 141 static __inline int eepromreadbit __P((bus_space_tag_t, bus_space_handle_t)); 142 /* 143 * void iymeminit __P((void *, struct iy_softc *)); 144 * static int iy_mc_setup __P((struct iy_softc *, void *)); 145 * static void iy_mc_reset __P((struct iy_softc *)); 146 */ 147 #ifdef IYDEBUGX 148 void print_rbd __P((volatile struct iy_recv_buf_desc *)); 149 150 int in_ifrint = 0; 151 int in_iftint = 0; 152 #endif 153 154 int iyprobe __P((struct device *, void *, void *)); 155 void iyattach __P((struct device *, struct device *, void *)); 156 157 static u_int16_t eepromread __P((bus_space_tag_t, bus_space_handle_t, int)); 158 159 static int eepromreadall __P((bus_space_tag_t, bus_space_handle_t, u_int16_t *, 160 int)); 161 162 struct cfattach iy_ca = { 163 sizeof(struct iy_softc), iyprobe, iyattach 164 }; 165 166 struct cfdriver iy_cd = { 167 NULL, "iy", DV_IFNET 168 }; 169 170 static u_int8_t eepro_irqmap[] = EEPP_INTMAP; 171 static u_int8_t eepro_revirqmap[] = EEPP_RINTMAP; 172 173 int 174 iyprobe(parent, match, aux) 175 struct device *parent; 176 void *match, *aux; 177 { 178 struct isa_attach_args *ia = aux; 179 u_int16_t eaddr[8]; 180 181 bus_space_tag_t iot; 182 bus_space_handle_t ioh; 183 184 u_int8_t c, d; 185 186 iot = ia->ia_iot; 187 188 if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh)) 189 return 0; 190 191 /* try to find the round robin sig: */ 192 193 c = bus_space_read_1(iot, ioh, ID_REG); 194 if ((c & ID_REG_MASK) != ID_REG_SIG) 195 goto out; 196 197 d = bus_space_read_1(iot, ioh, ID_REG); 198 if ((d & ID_REG_MASK) != ID_REG_SIG) 199 goto out; 200 201 if (((d-c) & R_ROBIN_BITS) != 0x40) 202 goto out; 203 204 d = bus_space_read_1(iot, ioh, ID_REG); 205 if ((d & ID_REG_MASK) != ID_REG_SIG) 206 goto out; 207 208 if (((d-c) & R_ROBIN_BITS) != 0x80) 209 goto out; 210 211 d = bus_space_read_1(iot, ioh, ID_REG); 212 if ((d & ID_REG_MASK) != ID_REG_SIG) 213 goto out; 214 215 if (((d-c) & R_ROBIN_BITS) != 0xC0) 216 goto out; 217 218 d = bus_space_read_1(iot, ioh, ID_REG); 219 if ((d & ID_REG_MASK) != ID_REG_SIG) 220 goto out; 221 222 if (((d-c) & R_ROBIN_BITS) != 0x00) 223 goto out; 224 225 #ifdef IYDEBUG 226 printf("iyprobe verified working ID reg.\n"); 227 #endif 228 229 if (eepromreadall(iot, ioh, eaddr, 8)) 230 goto out; 231 232 if (ia->ia_irq == IRQUNK) 233 ia->ia_irq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; 234 235 if (ia->ia_irq >= sizeof(eepro_revirqmap)) 236 goto out; 237 238 if (eepro_revirqmap[ia->ia_irq] == 0xff) 239 goto out; 240 241 /* now lets reset the chip */ 242 243 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 244 delay(200); 245 246 ia->ia_iosize = 16; 247 248 bus_space_unmap(iot, ioh, 16); 249 return 1; /* found */ 250 out: 251 bus_space_unmap(iot, ioh, 16); 252 return 0; 253 } 254 255 void 256 iyattach(parent, self, aux) 257 struct device *parent, *self; 258 void *aux; 259 { 260 struct iy_softc *sc = (void *)self; 261 struct isa_attach_args *ia = aux; 262 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 263 bus_space_tag_t iot; 264 bus_space_handle_t ioh; 265 unsigned temp; 266 u_int16_t eaddr[8]; 267 u_int8_t myaddr[ETHER_ADDR_LEN]; 268 int eirq; 269 270 iot = ia->ia_iot; 271 272 if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh)) 273 panic("Can't bus_space_map in iyattach"); 274 275 sc->sc_iot = iot; 276 sc->sc_ioh = ioh; 277 278 sc->mappedirq = eepro_revirqmap[ia->ia_irq]; 279 280 /* now let's reset the chip */ 281 282 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 283 delay(200); 284 285 iyprobemem(sc); 286 287 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 288 ifp->if_softc = sc; 289 ifp->if_start = iystart; 290 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 291 /* XXX todo: | IFF_MULTICAST */ 292 293 ifp->if_ioctl = iyioctl; 294 ifp->if_watchdog = iywatchdog; 295 296 (void)eepromreadall(iot, ioh, eaddr, 8); 297 sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev; 298 299 #ifdef DIAGNOSTICS 300 if ((eaddr[EEPPEther0] != 301 eepromread(iot, ioh, EEPPEther0a)) && 302 (eaddr[EEPPEther1] != 303 eepromread(iot, ioh, EEPPEther1a)) && 304 (eaddr[EEPPEther2] != 305 eepromread(iot, ioh, EEPPEther2a))) 306 307 printf("EEPROM Ethernet address differs from copy\n"); 308 #endif 309 310 myaddr[1] = eaddr[EEPPEther0] & 0xFF; 311 myaddr[0] = eaddr[EEPPEther0] >> 8; 312 myaddr[3] = eaddr[EEPPEther1] & 0xFF; 313 myaddr[2] = eaddr[EEPPEther1] >> 8; 314 myaddr[5] = eaddr[EEPPEther2] & 0xFF; 315 myaddr[4] = eaddr[EEPPEther2] >> 8; 316 317 /* Attach the interface. */ 318 if_attach(ifp); 319 ether_ifattach(ifp, myaddr); 320 printf(": address %s, rev. %d, %d kB\n", 321 ether_sprintf(myaddr), 322 sc->hard_vers, sc->sram/1024); 323 324 eirq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; 325 if (eirq != ia->ia_irq) 326 printf("%s: EEPROM irq setting %d ignored\n", 327 sc->sc_dev.dv_xname, eirq); 328 329 #if NBPFILTER > 0 330 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 331 #endif 332 333 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 334 IPL_NET, iyintr, sc); 335 336 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 337 bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 338 } 339 340 void 341 iystop(sc) 342 struct iy_softc *sc; 343 { 344 bus_space_tag_t iot; 345 bus_space_handle_t ioh; 346 #ifdef IYDEBUG 347 u_int p, v; 348 #endif 349 350 iot = sc->sc_iot; 351 ioh = sc->sc_ioh; 352 353 bus_space_write_1(iot, ioh, COMMAND_REG, RCV_DISABLE_CMD); 354 355 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS); 356 bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); 357 358 bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); 359 delay(200); 360 #ifdef IYDEBUG 361 printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n", 362 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 363 p = sc->tx_last; 364 if (!p) 365 p = sc->tx_start; 366 do { 367 bus_space_write_2(iot, ioh, HOST_ADDR_REG, p); 368 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 369 printf("0x%04x: %b ", p, v, "\020\006Ab\010Dn"); 370 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 371 printf("0x%b", v, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL"); 372 p = bus_space_read_2(iot, ioh, MEM_PORT_REG); 373 printf(" 0x%04x", p); 374 v = bus_space_read_2(iot, ioh, MEM_PORT_REG); 375 printf(" 0x%b\n", v, "\020\020Ch"); 376 377 } while (v & 0x8000); 378 #endif 379 sc->tx_start = sc->tx_end = sc->rx_size; 380 sc->tx_last = 0; 381 sc->sc_ethercom.ec_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 382 383 iymbufempty((void *)sc); 384 } 385 386 void 387 iyreset(sc) 388 struct iy_softc *sc; 389 { 390 int s; 391 s = splimp(); 392 iystop(sc); 393 iyinit(sc); 394 splx(s); 395 } 396 397 void 398 iyinit(sc) 399 struct iy_softc *sc; 400 { 401 int i; 402 unsigned temp; 403 struct ifnet *ifp; 404 bus_space_tag_t iot; 405 bus_space_handle_t ioh; 406 407 iot = sc->sc_iot; 408 ioh = sc->sc_ioh; 409 410 ifp = &sc->sc_ethercom.ec_if; 411 #ifdef IYDEBUG 412 printf("ifp is %p\n", ifp); 413 #endif 414 415 bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); 416 417 temp = bus_space_read_1(iot, ioh, EEPROM_REG); 418 if (temp & 0x10) 419 bus_space_write_1(iot, ioh, EEPROM_REG, temp & ~0x10); 420 421 for (i=0; i<6; ++i) { 422 bus_space_write_1(iot, ioh, I_ADD(i), LLADDR(ifp->if_sadl)[i]); 423 } 424 425 temp = bus_space_read_1(iot, ioh, REG1); 426 bus_space_write_1(iot, ioh, REG1, 427 temp | XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | RCV_DISCARD_BAD); 428 429 temp = bus_space_read_1(iot, ioh, RECV_MODES_REG); 430 bus_space_write_1(iot, ioh, RECV_MODES_REG, temp | MATCH_BRDCST); 431 #ifdef IYDEBUG 432 printf("%s: RECV_MODES were %b set to %b\n", 433 sc->sc_dev.dv_xname, 434 temp, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA", 435 temp|MATCH_BRDCST, 436 "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA"); 437 #endif 438 439 440 delay(500000); /* for the hardware to test for the connector */ 441 442 temp = bus_space_read_1(iot, ioh, MEDIA_SELECT); 443 #ifdef IYDEBUG 444 printf("%s: media select was 0x%b ", sc->sc_dev.dv_xname, 445 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 446 #endif 447 temp = (temp & TEST_MODE_MASK); 448 449 switch(ifp->if_flags & (IFF_LINK0 | IFF_LINK1)) { 450 case IFF_LINK0: 451 temp &= ~ (BNC_BIT | TPE_BIT); 452 break; 453 454 case IFF_LINK1: 455 temp = (temp & ~TPE_BIT) | BNC_BIT; 456 break; 457 458 case IFF_LINK0|IFF_LINK1: 459 temp = (temp & ~BNC_BIT) | TPE_BIT; 460 break; 461 default: 462 /* nothing; leave as it is */ 463 } 464 465 466 bus_space_write_1(iot, ioh, MEDIA_SELECT, temp); 467 #ifdef IYDEBUG 468 printf("changed to 0x%b\n", 469 temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); 470 #endif 471 472 bus_space_write_1(iot, ioh, 0, BANK_SEL(1)); 473 474 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 475 bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); 476 477 #ifdef IYDEBUG 478 printf("%s: int no was %b\n", sc->sc_dev.dv_xname, 479 temp, "\020\4bad_irq\010flash/boot present"); 480 temp = bus_space_read_1(iot, ioh, INT_NO_REG); 481 printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname, 482 temp, "\020\4BAD IRQ\010flash/boot present"); 483 #endif 484 485 486 bus_space_write_1(iot, ioh, RCV_LOWER_LIMIT_REG, 0); 487 bus_space_write_1(iot, ioh, RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8); 488 bus_space_write_1(iot, ioh, XMT_LOWER_LIMIT_REG, sc->rx_size >> 8); 489 bus_space_write_1(iot, ioh, XMT_UPPER_LIMIT_REG, sc->sram >> 8); 490 491 temp = bus_space_read_1(iot, ioh, REG1); 492 #ifdef IYDEBUG 493 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 494 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 495 #endif 496 bus_space_write_1(iot, ioh, REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ 497 498 #ifdef IYDEBUG 499 temp = bus_space_read_1(iot, ioh, REG1); 500 printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, 501 temp, "\020\2WORD_WIDTH\010INT_ENABLE"); 502 #endif 503 504 bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); 505 506 bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); 507 bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); /* clear ints */ 508 509 bus_space_write_2(iot, ioh, RCV_START_LOW, 0); 510 bus_space_write_2(iot, ioh, RCV_STOP_LOW, sc->rx_size - 2); 511 sc->rx_start = 0; 512 513 bus_space_write_1(iot, ioh, 0, SEL_RESET_CMD); 514 delay(200); 515 516 bus_space_write_2(iot, ioh, XMT_ADDR_REG, sc->rx_size); 517 518 sc->tx_start = sc->tx_end = sc->rx_size; 519 sc->tx_last = 0; 520 521 bus_space_write_1(iot, ioh, 0, RCV_ENABLE_CMD); 522 523 ifp->if_flags |= IFF_RUNNING; 524 ifp->if_flags &= ~IFF_OACTIVE; 525 } 526 527 void 528 iystart(ifp) 529 struct ifnet *ifp; 530 { 531 struct iy_softc *sc; 532 533 534 struct mbuf *m0, *m; 535 u_int len, pad, last, end; 536 u_int llen, residual; 537 int avail; 538 caddr_t data; 539 u_int16_t resval, stat; 540 bus_space_tag_t iot; 541 bus_space_handle_t ioh; 542 543 #ifdef IYDEBUG 544 printf("iystart called\n"); 545 #endif 546 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 547 return; 548 549 sc = ifp->if_softc; 550 iot = sc->sc_iot; 551 ioh = sc->sc_ioh; 552 553 while ((m0 = ifp->if_snd.ifq_head) != NULL) { 554 #ifdef IYDEBUG 555 printf("%s: trying to write another packet to the hardware\n", 556 sc->sc_dev.dv_xname); 557 #endif 558 559 /* We need to use m->m_pkthdr.len, so require the header */ 560 if ((m0->m_flags & M_PKTHDR) == 0) 561 panic("iystart: no header mbuf"); 562 563 len = m0->m_pkthdr.len; 564 pad = len & 1; 565 566 #ifdef IYDEBUG 567 printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len); 568 #endif 569 if (len < ETHER_MIN_LEN) { 570 pad = ETHER_MIN_LEN - len; 571 } 572 573 if (len + pad > ETHER_MAX_LEN) { 574 /* packet is obviously too large: toss it */ 575 ++ifp->if_oerrors; 576 IF_DEQUEUE(&ifp->if_snd, m0); 577 m_freem(m0); 578 continue; 579 } 580 581 #if NBPFILTER > 0 582 if (ifp->if_bpf) 583 bpf_mtap(ifp->if_bpf, m0); 584 #endif 585 586 avail = sc->tx_start - sc->tx_end; 587 if (avail <= 0) 588 avail += sc->tx_size; 589 590 #ifdef IYDEBUG 591 printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail); 592 #endif 593 /* 594 * we MUST RUN at splnet here --- 595 * XXX todo: or even turn off the boards ints ??? hm... 596 */ 597 598 /* See if there is room to put another packet in the buffer. */ 599 600 if ((len+pad+2*I595_XMT_HDRLEN) > avail) { 601 printf("%s: len = %d, avail = %d, setting OACTIVE\n", 602 sc->sc_dev.dv_xname, len, avail); 603 ifp->if_flags |= IFF_OACTIVE; 604 return; 605 } 606 607 /* we know it fits in the hardware now, so dequeue it */ 608 IF_DEQUEUE(&ifp->if_snd, m0); 609 610 last = sc->tx_end; 611 end = last + pad + len + I595_XMT_HDRLEN; 612 613 if (end >= sc->sram) { 614 if ((sc->sram - last) <= I595_XMT_HDRLEN) { 615 /* keep header in one piece */ 616 last = sc->rx_size; 617 end = last + pad + len + I595_XMT_HDRLEN; 618 } else 619 end -= sc->tx_size; 620 } 621 622 bus_space_write_2(iot, ioh, HOST_ADDR_REG, last); 623 bus_space_write_2(iot, ioh, MEM_PORT_REG, XMT_CMD); 624 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 625 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 626 bus_space_write_2(iot, ioh, MEM_PORT_REG, len + pad); 627 628 residual = resval = 0; 629 630 while ((m = m0)!=0) { 631 data = mtod(m, caddr_t); 632 llen = m->m_len; 633 if (residual) { 634 #ifdef IYDEBUG 635 printf("%s: merging residual with next mbuf.\n", 636 sc->sc_dev.dv_xname); 637 #endif 638 resval |= *data << 8; 639 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 640 --llen; 641 ++data; 642 } 643 if (llen > 1) 644 bus_space_write_multi_2(iot, ioh, MEM_PORT_REG, 645 data, llen>>1); 646 residual = llen & 1; 647 if (residual) { 648 resval = *(data + llen - 1); 649 #ifdef IYDEBUG 650 printf("%s: got odd mbuf to send.\n", 651 sc->sc_dev.dv_xname); 652 #endif 653 } 654 655 MFREE(m, m0); 656 } 657 658 if (residual) 659 bus_space_write_2(iot, ioh, MEM_PORT_REG, resval); 660 661 pad >>= 1; 662 while (pad-- > 0) 663 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 664 665 #ifdef IYDEBUG 666 printf("%s: new last = 0x%x, end = 0x%x.\n", 667 sc->sc_dev.dv_xname, last, end); 668 printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", 669 sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); 670 #endif 671 672 if (sc->tx_start != sc->tx_end) { 673 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_COUNT); 674 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); 675 676 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); 677 bus_space_write_2(iot, ioh, MEM_PORT_REG, last); 678 bus_space_write_2(iot, ioh, MEM_PORT_REG, stat | CHAIN); 679 #ifdef IYDEBUG 680 printf("%s: setting 0x%x to 0x%x\n", 681 sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, 682 stat | CHAIN); 683 #endif 684 } 685 stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); /* dummy read */ 686 687 /* XXX todo: enable ints here if disabled */ 688 689 ++ifp->if_opackets; 690 691 if (sc->tx_start == sc->tx_end) { 692 bus_space_write_2(iot, ioh, XMT_ADDR_REG, last); 693 bus_space_write_1(iot, ioh, 0, XMT_CMD); 694 sc->tx_start = last; 695 #ifdef IYDEBUG 696 printf("%s: writing 0x%x to XAR and giving XCMD\n", 697 sc->sc_dev.dv_xname, last); 698 #endif 699 } else { 700 bus_space_write_1(iot, ioh, 0, RESUME_XMT_CMD); 701 #ifdef IYDEBUG 702 printf("%s: giving RESUME_XCMD\n", 703 sc->sc_dev.dv_xname); 704 #endif 705 } 706 sc->tx_last = last; 707 sc->tx_end = end; 708 } 709 } 710 711 712 static __inline void 713 eepromwritebit(iot, ioh, what) 714 bus_space_tag_t iot; 715 bus_space_handle_t ioh; 716 int what; 717 { 718 bus_space_write_1(iot, ioh, EEPROM_REG, what); 719 delay(1); 720 bus_space_write_1(iot, ioh, EEPROM_REG, what|EESK); 721 delay(1); 722 bus_space_write_1(iot, ioh, EEPROM_REG, what); 723 delay(1); 724 } 725 726 static __inline int 727 eepromreadbit(iot, ioh) 728 bus_space_tag_t iot; 729 bus_space_handle_t ioh; 730 { 731 int b; 732 733 bus_space_write_1(iot, ioh, EEPROM_REG, EECS|EESK); 734 delay(1); 735 b = bus_space_read_1(iot, ioh, EEPROM_REG); 736 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); 737 delay(1); 738 739 return ((b & EEDO) != 0); 740 } 741 742 static u_int16_t 743 eepromread(iot, ioh, offset) 744 bus_space_tag_t iot; 745 bus_space_handle_t ioh; 746 int offset; 747 { 748 volatile int i; 749 volatile int j; 750 volatile u_int16_t readval; 751 752 bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); 753 delay(1); 754 bus_space_write_1(iot, ioh, EEPROM_REG, EECS); /* XXXX??? */ 755 delay(1); 756 757 eepromwritebit(iot, ioh, EECS|EEDI); 758 eepromwritebit(iot, ioh, EECS|EEDI); 759 eepromwritebit(iot, ioh, EECS); 760 761 for (j=5; j>=0; --j) { 762 if ((offset>>j) & 1) 763 eepromwritebit(iot, ioh, EECS|EEDI); 764 else 765 eepromwritebit(iot, ioh, EECS); 766 } 767 768 for (readval=0, i=0; i<16; ++i) { 769 readval<<=1; 770 readval |= eepromreadbit(iot, ioh); 771 } 772 773 bus_space_write_1(iot, ioh, EEPROM_REG, 0|EESK); 774 delay(1); 775 bus_space_write_1(iot, ioh, EEPROM_REG, 0); 776 777 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 778 779 return readval; 780 } 781 782 /* 783 * Device timeout/watchdog routine. Entered if the device neglects to generate 784 * an interrupt after a transmit has been started on it. 785 */ 786 void 787 iywatchdog(ifp) 788 struct ifnet *ifp; 789 { 790 struct iy_softc *sc = ifp->if_softc; 791 792 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 793 ++sc->sc_ethercom.ec_if.if_oerrors; 794 iyreset(sc); 795 } 796 797 /* 798 * What to do upon receipt of an interrupt. 799 */ 800 int 801 iyintr(arg) 802 void *arg; 803 { 804 struct iy_softc *sc = arg; 805 bus_space_tag_t iot; 806 bus_space_handle_t ioh; 807 808 register u_short status; 809 810 iot = sc->sc_iot; 811 ioh = sc->sc_ioh; 812 813 status = bus_space_read_1(iot, ioh, STATUS_REG); 814 #ifdef IYDEBUG 815 if (status & ALL_INTS) { 816 printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, 817 "\020\1RX_STP\2RX\3TX\4EXEC"); 818 if (status & EXEC_INT) 819 printf(" event %b\n", bus_space_read_1(iot, ioh, 0), 820 "\020\6ABORT"); 821 else 822 printf("\n"); 823 } 824 #endif 825 if (((status & (RX_INT | TX_INT)) == 0)) 826 return 0; 827 828 if (status & RX_INT) { 829 iy_intr_rx(sc); 830 bus_space_write_1(iot, ioh, STATUS_REG, RX_INT); 831 } else if (status & TX_INT) { 832 iy_intr_tx(sc); 833 bus_space_write_1(iot, ioh, STATUS_REG, TX_INT); 834 } 835 return 1; 836 } 837 838 void 839 iyget(sc, iot, ioh, rxlen) 840 struct iy_softc *sc; 841 bus_space_tag_t iot; 842 bus_space_handle_t ioh; 843 int rxlen; 844 { 845 struct mbuf *m, *top, **mp; 846 struct ether_header *eh; 847 struct ifnet *ifp; 848 int len; 849 850 ifp = &sc->sc_ethercom.ec_if; 851 852 m = sc->mb[sc->next_mb]; 853 sc->mb[sc->next_mb] = 0; 854 if (m == 0) { 855 MGETHDR(m, M_DONTWAIT, MT_DATA); 856 if (m == 0) 857 goto dropped; 858 } else { 859 if (sc->last_mb == sc->next_mb) 860 timeout(iymbuffill, sc, 1); 861 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 862 m->m_data = m->m_pktdat; 863 m->m_flags = M_PKTHDR; 864 } 865 m->m_pkthdr.rcvif = ifp; 866 m->m_pkthdr.len = rxlen; 867 len = MHLEN; 868 top = 0; 869 mp = ⊤ 870 871 while (rxlen > 0) { 872 if (top) { 873 m = sc->mb[sc->next_mb]; 874 sc->mb[sc->next_mb] = 0; 875 if (m == 0) { 876 MGET(m, M_DONTWAIT, MT_DATA); 877 if (m == 0) { 878 m_freem(top); 879 goto dropped; 880 } 881 } else { 882 sc->next_mb = (sc->next_mb + 1) % MAX_MBS; 883 } 884 len = MLEN; 885 } 886 if (rxlen >= MINCLSIZE) { 887 MCLGET(m, M_DONTWAIT); 888 if (m->m_flags & M_EXT) 889 len = MCLBYTES; 890 } 891 len = min(rxlen, len); 892 if (len > 1) { 893 len &= ~1; 894 895 bus_space_read_multi_2(iot, ioh, MEM_PORT_REG, 896 mtod(m, caddr_t), len/2); 897 } else { 898 #ifdef IYDEBUG 899 printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); 900 #endif 901 *(mtod(m, caddr_t)) = bus_space_read_2(iot, ioh, 902 MEM_PORT_REG); 903 } 904 m->m_len = len; 905 rxlen -= len; 906 *mp = m; 907 mp = &m->m_next; 908 } 909 /* XXX receive the top here */ 910 ++ifp->if_ipackets; 911 912 eh = mtod(top, struct ether_header *); 913 914 #if NBPFILTER > 0 915 if (ifp->if_bpf) { 916 bpf_mtap(ifp->if_bpf, top); 917 if ((ifp->if_flags & IFF_PROMISC) && 918 (eh->ether_dhost[0] & 1) == 0 && 919 bcmp(eh->ether_dhost, 920 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 921 sizeof(eh->ether_dhost)) != 0) { 922 923 m_freem(top); 924 return; 925 } 926 } 927 #endif 928 m_adj(top, sizeof(struct ether_header)); 929 ether_input(ifp, eh, top); 930 return; 931 932 dropped: 933 ++ifp->if_ierrors; 934 return; 935 } 936 void 937 iy_intr_rx(sc) 938 struct iy_softc *sc; 939 { 940 struct ifnet *ifp; 941 bus_space_tag_t iot; 942 bus_space_handle_t ioh; 943 944 u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; 945 946 iot = sc->sc_iot; 947 ioh = sc->sc_ioh; 948 ifp = &sc->sc_ethercom.ec_if; 949 950 rxadrs = sc->rx_start; 951 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxadrs); 952 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 953 rxnext = 0; 954 955 while (rxevnt == RCV_DONE) { 956 rxstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 957 rxnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 958 rxlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 959 #ifdef IYDEBUG 960 printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", 961 sc->sc_dev.dv_xname, rxadrs, rxstatus, 962 "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" 963 "\014CRCERR\015LENERR\016RCVOK\020TYP", 964 rxnext, rxlen); 965 #endif 966 iyget(sc, iot, ioh, rxlen); 967 968 /* move stop address */ 969 bus_space_write_2(iot, ioh, RCV_STOP_LOW, 970 rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); 971 972 bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxnext); 973 rxadrs = rxnext; 974 rxevnt = bus_space_read_2(iot, ioh, MEM_PORT_REG); 975 } 976 sc->rx_start = rxnext; 977 } 978 979 void 980 iy_intr_tx(sc) 981 struct iy_softc *sc; 982 { 983 bus_space_tag_t iot; 984 bus_space_handle_t ioh; 985 struct ifnet *ifp; 986 u_int txstatus, txstat2, txlen, txnext; 987 988 ifp = &sc->sc_ethercom.ec_if; 989 iot = sc->sc_iot; 990 ioh = sc->sc_ioh; 991 992 while (sc->tx_start != sc->tx_end) { 993 bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_start); 994 txstatus = bus_space_read_2(iot, ioh, MEM_PORT_REG); 995 if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) 996 break; 997 998 txstat2 = bus_space_read_2(iot, ioh, MEM_PORT_REG); 999 txnext = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1000 txlen = bus_space_read_2(iot, ioh, MEM_PORT_REG); 1001 #ifdef IYDEBUG 1002 printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", 1003 txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" 1004 "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", 1005 txnext, txlen); 1006 #endif 1007 if (txlen & CHAIN) 1008 sc->tx_start = txnext; 1009 else 1010 sc->tx_start = sc->tx_end; 1011 ifp->if_flags &= ~IFF_OACTIVE; 1012 1013 if ((txstat2 & 0x2000) == 0) 1014 ++ifp->if_oerrors; 1015 if (txstat2 & 0x000f) 1016 ifp->if_oerrors += txstat2 & 0x000f; 1017 } 1018 ifp->if_flags &= ~IFF_OACTIVE; 1019 } 1020 1021 #if 0 1022 /* 1023 * Compare two Ether/802 addresses for equality, inlined and unrolled for 1024 * speed. I'd love to have an inline assembler version of this... 1025 */ 1026 static inline int 1027 ether_equal(one, two) 1028 u_char *one, *two; 1029 { 1030 1031 if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || 1032 one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) 1033 return 0; 1034 return 1; 1035 } 1036 1037 /* 1038 * Check for a valid address. to_bpf is filled in with one of the following: 1039 * 0 -> BPF doesn't get this packet 1040 * 1 -> BPF does get this packet 1041 * 2 -> BPF does get this packet, but we don't 1042 * Return value is true if the packet is for us, and false otherwise. 1043 * 1044 * This routine is a mess, but it's also critical that it be as fast 1045 * as possible. It could be made cleaner if we can assume that the 1046 * only client which will fiddle with IFF_PROMISC is BPF. This is 1047 * probably a good assumption, but we do not make it here. (Yet.) 1048 */ 1049 static inline int 1050 check_eh(sc, eh, to_bpf) 1051 struct iy_softc *sc; 1052 struct ether_header *eh; 1053 int *to_bpf; 1054 { 1055 int i; 1056 1057 switch (sc->promisc) { 1058 case IFF_ALLMULTI: 1059 /* 1060 * Receiving all multicasts, but no unicasts except those 1061 * destined for us. 1062 */ 1063 #if NBPFILTER > 0 1064 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ 1065 #endif 1066 if (eh->ether_dhost[0] & 1) 1067 return 1; 1068 if (ether_equal(eh->ether_dhost, 1069 LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1070 return 1; 1071 return 0; 1072 1073 case IFF_PROMISC: 1074 /* 1075 * Receiving all packets. These need to be passed on to BPF. 1076 */ 1077 #if NBPFILTER > 0 1078 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1079 #endif 1080 /* If for us, accept and hand up to BPF */ 1081 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1082 return 1; 1083 1084 #if NBPFILTER > 0 1085 if (*to_bpf) 1086 *to_bpf = 2; /* we don't need to see it */ 1087 #endif 1088 1089 /* 1090 * Not a multicast, so BPF wants to see it but we don't. 1091 */ 1092 if (!(eh->ether_dhost[0] & 1)) 1093 return 1; 1094 1095 /* 1096 * If it's one of our multicast groups, accept it and pass it 1097 * up. 1098 */ 1099 for (i = 0; i < sc->mcast_count; i++) { 1100 if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { 1101 #if NBPFILTER > 0 1102 if (*to_bpf) 1103 *to_bpf = 1; 1104 #endif 1105 return 1; 1106 } 1107 } 1108 return 1; 1109 1110 case IFF_ALLMULTI | IFF_PROMISC: 1111 /* 1112 * Acting as a multicast router, and BPF running at the same 1113 * time. Whew! (Hope this is a fast machine...) 1114 */ 1115 #if NBPFILTER > 0 1116 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1117 #endif 1118 /* We want to see multicasts. */ 1119 if (eh->ether_dhost[0] & 1) 1120 return 1; 1121 1122 /* We want to see our own packets */ 1123 if (ether_equal(eh->ether_dhost, LLADDR(sc->sc_ethercom.ec_if.if_sadl))) 1124 return 1; 1125 1126 /* Anything else goes to BPF but nothing else. */ 1127 #if NBPFILTER > 0 1128 if (*to_bpf) 1129 *to_bpf = 2; 1130 #endif 1131 return 1; 1132 1133 case 0: 1134 /* 1135 * Only accept unicast packets destined for us, or multicasts 1136 * for groups that we belong to. For now, we assume that the 1137 * '586 will only return packets that we asked it for. This 1138 * isn't strictly true (it uses hashing for the multicast 1139 * filter), but it will do in this case, and we want to get out 1140 * of here as quickly as possible. 1141 */ 1142 #if NBPFILTER > 0 1143 *to_bpf = (sc->sc_ethercom.ec_if.iy_bpf != 0); 1144 #endif 1145 return 1; 1146 } 1147 1148 #ifdef DIAGNOSTIC 1149 panic("check_eh: impossible"); 1150 #endif 1151 } 1152 #endif 1153 1154 int 1155 iyioctl(ifp, cmd, data) 1156 register struct ifnet *ifp; 1157 u_long cmd; 1158 caddr_t data; 1159 { 1160 struct iy_softc *sc; 1161 struct ifaddr *ifa; 1162 struct ifreq *ifr; 1163 int s, error = 0; 1164 1165 sc = ifp->if_softc; 1166 ifa = (struct ifaddr *)data; 1167 ifr = (struct ifreq *)data; 1168 1169 #ifdef IYDEBUG 1170 printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", 1171 ifp, ifp->if_xname, cmd, data); 1172 #endif 1173 1174 s = splimp(); 1175 1176 switch (cmd) { 1177 1178 case SIOCSIFADDR: 1179 ifp->if_flags |= IFF_UP; 1180 1181 switch (ifa->ifa_addr->sa_family) { 1182 #ifdef INET 1183 case AF_INET: 1184 iyinit(sc); 1185 arp_ifinit(ifp, ifa); 1186 break; 1187 #endif 1188 #ifdef NS 1189 /* XXX - This code is probably wrong. */ 1190 case AF_NS: 1191 { 1192 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1193 1194 if (ns_nullhost(*ina)) 1195 ina->x_host = *(union ns_host *) 1196 LLADDR(sc->sc_ethercom.ec_if.if_sadl); 1197 else 1198 bcopy(ina->x_host.c_host, 1199 LLADDR(sc->sc_ethercom.ec_if.if_sadl), 1200 ETHER_ADDR_LEN); 1201 /* Set new address. */ 1202 iyinit(sc); 1203 break; 1204 } 1205 #endif /* NS */ 1206 default: 1207 iyinit(sc); 1208 break; 1209 } 1210 break; 1211 1212 case SIOCSIFFLAGS: 1213 sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); 1214 if ((ifp->if_flags & IFF_UP) == 0 && 1215 (ifp->if_flags & IFF_RUNNING) != 0) { 1216 /* 1217 * If interface is marked down and it is running, then 1218 * stop it. 1219 */ 1220 iystop(sc); 1221 ifp->if_flags &= ~IFF_RUNNING; 1222 } else if ((ifp->if_flags & IFF_UP) != 0 && 1223 (ifp->if_flags & IFF_RUNNING) == 0) { 1224 /* 1225 * If interface is marked up and it is stopped, then 1226 * start it. 1227 */ 1228 iyinit(sc); 1229 } else { 1230 /* 1231 * Reset the interface to pick up changes in any other 1232 * flags that affect hardware registers. 1233 */ 1234 iystop(sc); 1235 iyinit(sc); 1236 } 1237 #ifdef IYDEBUGX 1238 if (ifp->if_flags & IFF_DEBUG) 1239 sc->sc_debug = IFY_ALL; 1240 else 1241 sc->sc_debug = 0; 1242 #endif 1243 break; 1244 1245 #if 0 /* XXX */ 1246 case SIOCADDMULTI: 1247 case SIOCDELMULTI: 1248 error = (cmd == SIOCADDMULTI) ? 1249 ether_addmulti(ifr, &sc->sc_ethercom): 1250 ether_delmulti(ifr, &sc->sc_ethercom); 1251 1252 if (error == ENETRESET) { 1253 /* 1254 * Multicast list has changed; set the hardware filter 1255 * accordingly. 1256 */ 1257 iy_mc_reset(sc); /* XXX */ 1258 error = 0; 1259 } 1260 break; 1261 #endif 1262 default: 1263 error = EINVAL; 1264 } 1265 splx(s); 1266 return error; 1267 } 1268 1269 #if 0 1270 static void 1271 iy_mc_reset(sc) 1272 struct iy_softc *sc; 1273 { 1274 struct ether_multi *enm; 1275 struct ether_multistep step; 1276 1277 /* 1278 * Step through the list of addresses. 1279 */ 1280 sc->mcast_count = 0; 1281 ETHER_FIRST_MULTI(step, &sc->sc_ethercom, enm); 1282 while (enm) { 1283 if (sc->mcast_count >= MAXMCAST || 1284 bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { 1285 sc->sc_ethercom.ec_if.if_flags |= IFF_ALLMULTI; 1286 iyioctl(&sc->sc_ethercom.ec_if, SIOCSIFFLAGS, 1287 (void *)0); 1288 goto setflag; 1289 } 1290 1291 bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); 1292 sc->mcast_count++; 1293 ETHER_NEXT_MULTI(step, enm); 1294 } 1295 setflag: 1296 sc->want_mcsetup = 1; 1297 } 1298 1299 #ifdef IYDEBUG 1300 void 1301 print_rbd(rbd) 1302 volatile struct ie_recv_buf_desc *rbd; 1303 { 1304 1305 printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" 1306 "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, 1307 rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, 1308 rbd->mbz); 1309 } 1310 #endif 1311 #endif 1312 1313 void 1314 iymbuffill(arg) 1315 void *arg; 1316 { 1317 struct iy_softc *sc = (struct iy_softc *)arg; 1318 int s, i; 1319 1320 s = splimp(); 1321 i = sc->last_mb; 1322 do { 1323 if (sc->mb[i] == NULL) 1324 MGET(sc->mb[i], M_DONTWAIT, MT_DATA); 1325 if (sc->mb[i] == NULL) 1326 break; 1327 i = (i + 1) % MAX_MBS; 1328 } while (i != sc->next_mb); 1329 sc->last_mb = i; 1330 /* If the queue was not filled, try again. */ 1331 if (sc->last_mb != sc->next_mb) 1332 timeout(iymbuffill, sc, 1); 1333 splx(s); 1334 } 1335 1336 1337 void 1338 iymbufempty(arg) 1339 void *arg; 1340 { 1341 struct iy_softc *sc = (struct iy_softc *)arg; 1342 int s, i; 1343 1344 s = splimp(); 1345 for (i = 0; i<MAX_MBS; i++) { 1346 if (sc->mb[i]) { 1347 m_freem(sc->mb[i]); 1348 sc->mb[i] = NULL; 1349 } 1350 } 1351 sc->last_mb = sc->next_mb = 0; 1352 untimeout(iymbuffill, sc); 1353 splx(s); 1354 } 1355 1356 void 1357 iyprobemem(sc) 1358 struct iy_softc *sc; 1359 { 1360 bus_space_tag_t iot; 1361 bus_space_handle_t ioh; 1362 int testing; 1363 1364 iot = sc->sc_iot; 1365 ioh = sc->sc_ioh; 1366 1367 bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); 1368 delay(1); 1369 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 4096-2); 1370 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1371 1372 for (testing=65536; testing >= 4096; testing >>= 1) { 1373 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1374 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xdead); 1375 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1376 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xdead) { 1377 #ifdef IYMEMDEBUG 1378 printf("%s: Didn't keep 0xdead at 0x%x\n", 1379 sc->sc_dev.dv_xname, testing-2); 1380 #endif 1381 continue; 1382 } 1383 1384 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1385 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xbeef); 1386 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); 1387 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xbeef) { 1388 #ifdef IYMEMDEBUG 1389 printf("%s: Didn't keep 0xbeef at 0x%x\n", 1390 sc->sc_dev.dv_xname, testing-2); 1391 #endif 1392 continue; 1393 } 1394 1395 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1396 bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); 1397 bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing >> 1); 1398 bus_space_write_2(iot, ioh, MEM_PORT_REG, testing >> 1); 1399 bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); 1400 if (bus_space_read_2(iot, ioh, MEM_PORT_REG) == (testing >> 1)) { 1401 #ifdef IYMEMDEBUG 1402 printf("%s: 0x%x alias of 0x0\n", 1403 sc->sc_dev.dv_xname, testing >> 1); 1404 #endif 1405 continue; 1406 } 1407 1408 break; 1409 } 1410 1411 sc->sram = testing; 1412 1413 switch(testing) { 1414 case 65536: 1415 /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ 1416 sc->rx_size = 44*1024; 1417 break; 1418 1419 case 32768: 1420 /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ 1421 sc->rx_size = 22*1024; 1422 break; 1423 1424 case 16384: 1425 /* 1 NFS packet + overhead RX, 4 big packets TX */ 1426 sc->rx_size = 10*1024; 1427 break; 1428 default: 1429 sc->rx_size = testing/2; 1430 break; 1431 } 1432 sc->tx_size = testing - sc->rx_size; 1433 } 1434 1435 static int 1436 eepromreadall(iot, ioh, wordp, maxi) 1437 bus_space_tag_t iot; 1438 bus_space_handle_t ioh; 1439 u_int16_t *wordp; 1440 int maxi; 1441 { 1442 int i; 1443 u_int16_t checksum, tmp; 1444 1445 checksum = 0; 1446 1447 for (i=0; i<EEPP_LENGTH; ++i) { 1448 tmp = eepromread(iot, ioh, i); 1449 checksum += tmp; 1450 if (i<maxi) 1451 wordp[i] = tmp; 1452 } 1453 1454 if (checksum != EEPP_CHKSUM) { 1455 #ifdef IYDEBUG 1456 printf("wrong EEPROM checksum 0x%x should be 0x%x\n", 1457 checksum, EEPP_CHKSUM); 1458 #endif 1459 return 1; 1460 } 1461 return 0; 1462 } 1463
Indexes created Wed Oct 01 15:09:59 GMT 2025