if_le_isa.c revision 1.14
1 /* $NetBSD: if_le_isa.c,v 1.14 1997/10/19 18:57:06 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /*- 41 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 42 * Copyright (c) 1992, 1993 43 * The Regents of the University of California. All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Ralph Campbell and Rick Macklem. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 77 */ 78 79 #include "bpfilter.h" 80 81 #include <sys/param.h> 82 #include <sys/systm.h> 83 #include <sys/mbuf.h> 84 #include <sys/syslog.h> 85 #include <sys/socket.h> 86 #include <sys/device.h> 87 88 #include <net/if.h> 89 #include <net/if_ether.h> 90 #include <net/if_media.h> 91 92 #ifdef INET 93 #include <netinet/in.h> 94 #include <netinet/if_inarp.h> 95 #endif 96 97 #include <vm/vm.h> 98 99 #include <machine/cpu.h> 100 #include <machine/intr.h> 101 #include <machine/bus.h> 102 103 #include <dev/isa/isareg.h> 104 #include <dev/isa/isavar.h> 105 #include <dev/isa/isadmavar.h> 106 107 #include <dev/ic/am7990reg.h> 108 #include <dev/ic/am7990var.h> 109 110 #include <dev/isa/if_levar.h> 111 112 static char *card_type[] = 113 { "unknown", "BICC Isolan", "NE2100", "DEPCA", "PCnet-ISA" }; 114 115 int le_isa_probe __P((struct device *, void *, void *)); 116 void le_isa_attach __P((struct device *, struct device *, void *)); 117 118 struct cfattach le_isa_ca = { 119 sizeof(struct le_softc), le_isa_probe, le_isa_attach 120 }; 121 122 int depca_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 123 int ne2100_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 124 int bicc_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 125 int lance_isa_probe __P((struct am7990_softc *)); 126 127 int le_isa_intredge __P((void *)); 128 129 hide void le_isa_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 130 hide u_int16_t le_isa_rdcsr __P((struct am7990_softc *, u_int16_t)); 131 132 void depca_copytobuf __P((struct am7990_softc *, void *, int, int)); 133 void depca_copyfrombuf __P((struct am7990_softc *, void *, int, int)); 134 void depca_zerobuf __P((struct am7990_softc *, int, int)); 135 136 #define LE_ISA_MEMSIZE 16384 137 138 hide void 139 le_isa_wrcsr(sc, port, val) 140 struct am7990_softc *sc; 141 u_int16_t port, val; 142 { 143 struct le_softc *lesc = (struct le_softc *)sc; 144 bus_space_tag_t iot = lesc->sc_iot; 145 bus_space_handle_t ioh = lesc->sc_ioh; 146 147 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 148 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 149 } 150 151 hide u_int16_t 152 le_isa_rdcsr(sc, port) 153 struct am7990_softc *sc; 154 u_int16_t port; 155 { 156 struct le_softc *lesc = (struct le_softc *)sc; 157 bus_space_tag_t iot = lesc->sc_iot; 158 bus_space_handle_t ioh = lesc->sc_ioh; 159 u_int16_t val; 160 161 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 162 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 163 return (val); 164 } 165 166 int 167 le_isa_probe(parent, match, aux) 168 struct device *parent; 169 void *match, *aux; 170 { 171 struct le_softc *lesc = match; 172 struct isa_attach_args *ia = aux; 173 174 /* Disallow wildcarded i/o address. */ 175 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 176 return (0); 177 178 if (bicc_isa_probe(lesc, ia)) 179 return (1); 180 if (ne2100_isa_probe(lesc, ia)) 181 return (1); 182 if (depca_isa_probe(lesc, ia)) 183 return (1); 184 185 return (0); 186 } 187 188 int 189 depca_isa_probe(lesc, ia) 190 struct le_softc *lesc; 191 struct isa_attach_args *ia; 192 { 193 struct am7990_softc *sc = &lesc->sc_am7990; 194 int iobase = ia->ia_iobase, port; 195 bus_space_tag_t iot = ia->ia_iot; 196 bus_space_handle_t ioh; 197 bus_space_handle_t memh; 198 u_int8_t csr; 199 #if 0 200 u_int32_t sum, rom_sum; 201 u_int8_t x; 202 #endif 203 int i; 204 205 /* Map i/o space. */ 206 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 207 return 0; 208 209 if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1) 210 goto bad; 211 212 switch (ia->ia_msize) { 213 case 65536: 214 csr = DEPCA_CSR_SHE; 215 break; 216 case 32768: 217 csr = DEPCA_CSR_SHE | DEPCA_CSR_LOW32K; 218 break; 219 default: 220 goto bad; 221 } 222 223 /* Map card RAM. */ 224 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) 225 goto bad; 226 227 /* Just needed to check mapability; don't need it anymore. */ 228 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 229 230 lesc->sc_iot = iot; 231 lesc->sc_ioh = ioh; 232 lesc->sc_rap = DEPCA_RAP; 233 lesc->sc_rdp = DEPCA_RDP; 234 lesc->sc_card = DEPCA; 235 236 if (lance_isa_probe(sc) == 0) 237 goto bad; 238 239 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM); 240 241 /* 242 * Extract the physical MAC address from the ROM. 243 * 244 * The address PROM is 32 bytes wide, and we access it through 245 * a single I/O port. On each read, it rotates to the next 246 * position. We find the ethernet address by looking for a 247 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 248 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 249 * ethernet address and a checksum). 250 * 251 * It appears that the PROM can be at one of two locations, so 252 * we just try both. 253 */ 254 port = DEPCA_ADP; 255 for (i = 0; i < 32; i++) 256 if (bus_space_read_1(iot, ioh, port) == 0xff && 257 bus_space_read_1(iot, ioh, port) == 0x00 && 258 bus_space_read_1(iot, ioh, port) == 0x55 && 259 bus_space_read_1(iot, ioh, port) == 0xaa && 260 bus_space_read_1(iot, ioh, port) == 0xff && 261 bus_space_read_1(iot, ioh, port) == 0x00 && 262 bus_space_read_1(iot, ioh, port) == 0x55 && 263 bus_space_read_1(iot, ioh, port) == 0xaa) 264 goto found; 265 port = DEPCA_ADP + 1; 266 for (i = 0; i < 32; i++) 267 if (bus_space_read_1(iot, ioh, port) == 0xff && 268 bus_space_read_1(iot, ioh, port) == 0x00 && 269 bus_space_read_1(iot, ioh, port) == 0x55 && 270 bus_space_read_1(iot, ioh, port) == 0xaa && 271 bus_space_read_1(iot, ioh, port) == 0xff && 272 bus_space_read_1(iot, ioh, port) == 0x00 && 273 bus_space_read_1(iot, ioh, port) == 0x55 && 274 bus_space_read_1(iot, ioh, port) == 0xaa) 275 goto found; 276 printf("%s: address not found\n", sc->sc_dev.dv_xname); 277 goto bad; 278 279 found: 280 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 281 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, port); 282 283 #if 0 284 sum = 285 (sc->sc_enaddr[0] << 2) + 286 (sc->sc_enaddr[1] << 10) + 287 (sc->sc_enaddr[2] << 1) + 288 (sc->sc_enaddr[3] << 9) + 289 (sc->sc_enaddr[4] << 0) + 290 (sc->sc_enaddr[5] << 8); 291 sum = (sum & 0xffff) + (sum >> 16); 292 sum = (sum & 0xffff) + (sum >> 16); 293 294 rom_sum = bus_space_read_1(iot, ioh, port); 295 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 296 297 if (sum != rom_sum) { 298 printf("%s: checksum mismatch; calculated %04x != read %04x", 299 sc->sc_dev.dv_xname, sum, rom_sum); 300 goto bad; 301 } 302 #endif 303 304 /* 305 * XXX INDIRECT BROKENNESS! 306 * XXX Should always unmap, and re-map in if_le_isa_attach(). 307 */ 308 309 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM | DEPCA_CSR_IEN | 310 csr); 311 312 ia->ia_iosize = 16; 313 ia->ia_drq = DRQUNK; 314 return 1; 315 316 bad: 317 bus_space_unmap(iot, ioh, 16); 318 return 0; 319 } 320 321 int 322 ne2100_isa_probe(lesc, ia) 323 struct le_softc *lesc; 324 struct isa_attach_args *ia; 325 { 326 struct am7990_softc *sc = &lesc->sc_am7990; 327 int iobase = ia->ia_iobase; 328 bus_space_tag_t iot = ia->ia_iot; 329 bus_space_handle_t ioh; 330 int i; 331 332 /* Map i/o space. */ 333 if (bus_space_map(iot, iobase, 24, 0, &ioh)) 334 return 0; 335 336 lesc->sc_iot = iot; 337 lesc->sc_ioh = ioh; 338 lesc->sc_rap = NE2100_RAP; 339 lesc->sc_rdp = NE2100_RDP; 340 lesc->sc_card = NE2100; 341 342 if (lance_isa_probe(sc) == 0) { 343 bus_space_unmap(iot, ioh, 24); 344 return 0; 345 } 346 347 /* 348 * Extract the physical MAC address from the ROM. 349 */ 350 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 351 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); 352 353 /* 354 * XXX INDIRECT BROKENNESS! 355 * XXX Should always unmap, and re-map in if_le_isa_attach(). 356 */ 357 358 ia->ia_iosize = 24; 359 return 1; 360 } 361 362 int 363 bicc_isa_probe(lesc, ia) 364 struct le_softc *lesc; 365 struct isa_attach_args *ia; 366 { 367 struct am7990_softc *sc = &lesc->sc_am7990; 368 int iobase = ia->ia_iobase; 369 bus_space_tag_t iot = ia->ia_iot; 370 bus_space_handle_t ioh; 371 int i; 372 373 /* Map i/o space. */ 374 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 375 return 0; 376 377 lesc->sc_iot = iot; 378 lesc->sc_ioh = ioh; 379 lesc->sc_rap = BICC_RAP; 380 lesc->sc_rdp = BICC_RDP; 381 lesc->sc_card = BICC; 382 383 if (lance_isa_probe(sc) == 0) { 384 bus_space_unmap(iot, ioh, 16); 385 return 0; 386 } 387 388 /* 389 * Extract the physical MAC address from the ROM. 390 */ 391 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 392 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i * 2); 393 394 /* 395 * XXX INDIRECT BROKENNESS! 396 * XXX Should always unmap, and re-map in if_le_isa_attach(). 397 */ 398 399 ia->ia_iosize = 16; 400 return 1; 401 } 402 403 /* 404 * Determine which chip is present on the card. 405 */ 406 int 407 lance_isa_probe(sc) 408 struct am7990_softc *sc; 409 { 410 411 /* Stop the LANCE chip and put it in a known state. */ 412 le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP); 413 delay(100); 414 415 if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP) 416 return 0; 417 418 le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3); 419 return 1; 420 } 421 422 void 423 le_isa_attach(parent, self, aux) 424 struct device *parent, *self; 425 void *aux; 426 { 427 struct le_softc *lesc = (void *)self; 428 struct am7990_softc *sc = &lesc->sc_am7990; 429 struct isa_attach_args *ia = aux; 430 bus_space_tag_t iot = ia->ia_iot; 431 bus_space_tag_t memt = ia->ia_memt; 432 bus_dma_tag_t dmat = ia->ia_dmat; 433 bus_space_handle_t memh; 434 bus_dma_segment_t seg; 435 int rseg; 436 437 printf(": %s Ethernet\n", card_type[lesc->sc_card]); 438 439 lesc->sc_iot = iot; 440 lesc->sc_memt = memt; 441 lesc->sc_dmat = dmat; 442 443 /* XXX SHOULD RE-MAP I/O SPACE HERE. */ 444 445 if (lesc->sc_card == DEPCA) { 446 u_char val; 447 int i; 448 449 /* Map shared memory. */ 450 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 451 0, &memh)) 452 panic("le_isa_attach: can't map shared memory"); 453 454 lesc->sc_memh = memh; 455 456 val = 0xff; 457 for (;;) { 458 bus_space_set_region_1(memt, memh, 0, val, 459 ia->ia_msize); 460 for (i = 0; i < ia->ia_msize; i++) 461 if (bus_space_read_1(memt, memh, 1) != val) { 462 printf("%s: failed to clear memory\n", 463 sc->sc_dev.dv_xname); 464 return; 465 } 466 if (val == 0x00) 467 break; 468 val -= 0x55; 469 } 470 471 sc->sc_conf3 = LE_C3_ACON; 472 sc->sc_mem = 0; /* Not used. */ 473 sc->sc_addr = 0; 474 sc->sc_memsize = ia->ia_msize; 475 } else { 476 /* 477 * Allocate a DMA area for the card. 478 */ 479 if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, NBPG, 0, &seg, 1, 480 &rseg, BUS_DMA_NOWAIT)) { 481 printf("%s: couldn't allocate memory for card\n", 482 sc->sc_dev.dv_xname); 483 return; 484 } 485 if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE, 486 (caddr_t *)&sc->sc_mem, 487 BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC)) { 488 printf("%s: couldn't map memory for card\n", 489 sc->sc_dev.dv_xname); 490 return; 491 } 492 493 /* 494 * Create and load the DMA map for the DMA area. 495 */ 496 if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1, 497 LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { 498 printf("%s: couldn't create DMA map\n", 499 sc->sc_dev.dv_xname); 500 bus_dmamem_free(dmat, &seg, rseg); 501 return; 502 } 503 if (bus_dmamap_load(dmat, lesc->sc_dmam, 504 sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { 505 printf("%s: coundn't load DMA map\n", 506 sc->sc_dev.dv_xname); 507 bus_dmamem_free(dmat, &seg, rseg); 508 return; 509 } 510 511 sc->sc_conf3 = 0; 512 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; 513 sc->sc_memsize = LE_ISA_MEMSIZE; 514 } 515 516 if (lesc->sc_card == DEPCA) { 517 sc->sc_copytodesc = depca_copytobuf; 518 sc->sc_copyfromdesc = depca_copyfrombuf; 519 sc->sc_copytobuf = depca_copytobuf; 520 sc->sc_copyfrombuf = depca_copyfrombuf; 521 sc->sc_zerobuf = depca_zerobuf; 522 } else { 523 sc->sc_copytodesc = am7990_copytobuf_contig; 524 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 525 sc->sc_copytobuf = am7990_copytobuf_contig; 526 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 527 sc->sc_zerobuf = am7990_zerobuf_contig; 528 } 529 530 sc->sc_rdcsr = le_isa_rdcsr; 531 sc->sc_wrcsr = le_isa_wrcsr; 532 sc->sc_hwinit = NULL; 533 534 printf("%s", sc->sc_dev.dv_xname); 535 am7990_config(sc); 536 537 if (ia->ia_drq != DRQUNK) 538 isa_dmacascade(parent, ia->ia_drq); 539 540 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 541 IPL_NET, le_isa_intredge, sc); 542 } 543 544 /* 545 * Controller interrupt. 546 */ 547 int 548 le_isa_intredge(arg) 549 void *arg; 550 { 551 552 if (am7990_intr(arg) == 0) 553 return (0); 554 for (;;) 555 if (am7990_intr(arg) == 0) 556 return (1); 557 } 558 559 /* 560 * DEPCA shared memory access functions. 561 */ 562 563 void 564 depca_copytobuf(sc, from, boff, len) 565 struct am7990_softc *sc; 566 void *from; 567 int boff, len; 568 { 569 struct le_softc *lesc = (struct le_softc *)sc; 570 571 bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff, 572 from, len); 573 } 574 575 void 576 depca_copyfrombuf(sc, to, boff, len) 577 struct am7990_softc *sc; 578 void *to; 579 int boff, len; 580 { 581 struct le_softc *lesc = (struct le_softc *)sc; 582 583 bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff, 584 to, len); 585 } 586 587 void 588 depca_zerobuf(sc, boff, len) 589 struct am7990_softc *sc; 590 int boff, len; 591 { 592 struct le_softc *lesc = (struct le_softc *)sc; 593 594 #if 0 /* XXX !! */ 595 bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff, 596 0x00, len); 597 #else 598 for (; len != 0; boff++, len--) 599 bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00); 600 #endif 601 } 602
Indexes created Tue Sep 30 20:09:53 GMT 2025