if_le_isa.c revision 1.12
1 /* $NetBSD: if_le_isa.c,v 1.12 1997/09/10 03:05:39 mycroft 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 if (bicc_isa_probe(lesc, ia)) 175 return (1); 176 if (ne2100_isa_probe(lesc, ia)) 177 return (1); 178 if (depca_isa_probe(lesc, ia)) 179 return (1); 180 181 return (0); 182 } 183 184 int 185 depca_isa_probe(lesc, ia) 186 struct le_softc *lesc; 187 struct isa_attach_args *ia; 188 { 189 struct am7990_softc *sc = &lesc->sc_am7990; 190 int iobase = ia->ia_iobase, port; 191 bus_space_tag_t iot = ia->ia_iot; 192 bus_space_handle_t ioh; 193 bus_space_handle_t memh; 194 u_int8_t csr; 195 #if 0 196 u_int32_t sum, rom_sum; 197 u_int8_t x; 198 #endif 199 int i; 200 201 /* Map i/o space. */ 202 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 203 return 0; 204 205 if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1) 206 goto bad; 207 208 switch (ia->ia_msize) { 209 case 65536: 210 csr = DEPCA_CSR_SHE; 211 break; 212 case 32768: 213 csr = DEPCA_CSR_SHE | DEPCA_CSR_LOW32K; 214 break; 215 default: 216 goto bad; 217 } 218 219 /* Map card RAM. */ 220 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) 221 goto bad; 222 223 /* Just needed to check mapability; don't need it anymore. */ 224 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 225 226 lesc->sc_iot = iot; 227 lesc->sc_ioh = ioh; 228 lesc->sc_rap = DEPCA_RAP; 229 lesc->sc_rdp = DEPCA_RDP; 230 lesc->sc_card = DEPCA; 231 232 if (lance_isa_probe(sc) == 0) 233 goto bad; 234 235 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM); 236 237 /* 238 * Extract the physical MAC address from the ROM. 239 * 240 * The address PROM is 32 bytes wide, and we access it through 241 * a single I/O port. On each read, it rotates to the next 242 * position. We find the ethernet address by looking for a 243 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 244 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 245 * ethernet address and a checksum). 246 * 247 * It appears that the PROM can be at one of two locations, so 248 * we just try both. 249 */ 250 port = DEPCA_ADP; 251 for (i = 0; i < 32; i++) 252 if (bus_space_read_1(iot, ioh, port) == 0xff && 253 bus_space_read_1(iot, ioh, port) == 0x00 && 254 bus_space_read_1(iot, ioh, port) == 0x55 && 255 bus_space_read_1(iot, ioh, port) == 0xaa && 256 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 goto found; 261 port = DEPCA_ADP + 1; 262 for (i = 0; i < 32; i++) 263 if (bus_space_read_1(iot, ioh, port) == 0xff && 264 bus_space_read_1(iot, ioh, port) == 0x00 && 265 bus_space_read_1(iot, ioh, port) == 0x55 && 266 bus_space_read_1(iot, ioh, port) == 0xaa && 267 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 goto found; 272 printf("%s: address not found\n", sc->sc_dev.dv_xname); 273 goto bad; 274 275 found: 276 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 277 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, port); 278 279 #if 0 280 sum = 281 (sc->sc_enaddr[0] << 2) + 282 (sc->sc_enaddr[1] << 10) + 283 (sc->sc_enaddr[2] << 1) + 284 (sc->sc_enaddr[3] << 9) + 285 (sc->sc_enaddr[4] << 0) + 286 (sc->sc_enaddr[5] << 8); 287 sum = (sum & 0xffff) + (sum >> 16); 288 sum = (sum & 0xffff) + (sum >> 16); 289 290 rom_sum = bus_space_read_1(iot, ioh, port); 291 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 292 293 if (sum != rom_sum) { 294 printf("%s: checksum mismatch; calculated %04x != read %04x", 295 sc->sc_dev.dv_xname, sum, rom_sum); 296 goto bad; 297 } 298 #endif 299 300 /* 301 * XXX INDIRECT BROKENNESS! 302 * XXX Should always unmap, and re-map in if_le_isa_attach(). 303 */ 304 305 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM | csr); 306 307 ia->ia_iosize = 16; 308 ia->ia_drq = DRQUNK; 309 return 1; 310 311 bad: 312 bus_space_unmap(iot, ioh, 16); 313 return 0; 314 } 315 316 int 317 ne2100_isa_probe(lesc, ia) 318 struct le_softc *lesc; 319 struct isa_attach_args *ia; 320 { 321 struct am7990_softc *sc = &lesc->sc_am7990; 322 int iobase = ia->ia_iobase; 323 bus_space_tag_t iot = ia->ia_iot; 324 bus_space_handle_t ioh; 325 int i; 326 327 /* Map i/o space. */ 328 if (bus_space_map(iot, iobase, 24, 0, &ioh)) 329 return 0; 330 331 lesc->sc_iot = iot; 332 lesc->sc_ioh = ioh; 333 lesc->sc_rap = NE2100_RAP; 334 lesc->sc_rdp = NE2100_RDP; 335 lesc->sc_card = NE2100; 336 337 if (lance_isa_probe(sc) == 0) { 338 bus_space_unmap(iot, ioh, 24); 339 return 0; 340 } 341 342 /* 343 * Extract the physical MAC address from the ROM. 344 */ 345 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 346 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); 347 348 /* 349 * XXX INDIRECT BROKENNESS! 350 * XXX Should always unmap, and re-map in if_le_isa_attach(). 351 */ 352 353 ia->ia_iosize = 24; 354 return 1; 355 } 356 357 int 358 bicc_isa_probe(lesc, ia) 359 struct le_softc *lesc; 360 struct isa_attach_args *ia; 361 { 362 struct am7990_softc *sc = &lesc->sc_am7990; 363 int iobase = ia->ia_iobase; 364 bus_space_tag_t iot = ia->ia_iot; 365 bus_space_handle_t ioh; 366 int i; 367 368 /* Map i/o space. */ 369 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 370 return 0; 371 372 lesc->sc_iot = iot; 373 lesc->sc_ioh = ioh; 374 lesc->sc_rap = BICC_RAP; 375 lesc->sc_rdp = BICC_RDP; 376 lesc->sc_card = BICC; 377 378 if (lance_isa_probe(sc) == 0) { 379 bus_space_unmap(iot, ioh, 16); 380 return 0; 381 } 382 383 /* 384 * Extract the physical MAC address from the ROM. 385 */ 386 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 387 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i * 2); 388 389 /* 390 * XXX INDIRECT BROKENNESS! 391 * XXX Should always unmap, and re-map in if_le_isa_attach(). 392 */ 393 394 ia->ia_iosize = 16; 395 return 1; 396 } 397 398 /* 399 * Determine which chip is present on the card. 400 */ 401 int 402 lance_isa_probe(sc) 403 struct am7990_softc *sc; 404 { 405 406 /* Stop the LANCE chip and put it in a known state. */ 407 le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP); 408 delay(100); 409 410 if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP) 411 return 0; 412 413 le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3); 414 return 1; 415 } 416 417 void 418 le_isa_attach(parent, self, aux) 419 struct device *parent, *self; 420 void *aux; 421 { 422 struct le_softc *lesc = (void *)self; 423 struct am7990_softc *sc = &lesc->sc_am7990; 424 struct isa_attach_args *ia = aux; 425 bus_space_tag_t iot = ia->ia_iot; 426 bus_space_tag_t memt = ia->ia_memt; 427 bus_dma_tag_t dmat = ia->ia_dmat; 428 bus_space_handle_t memh; 429 bus_dma_segment_t seg; 430 int rseg; 431 432 printf(": %s Ethernet\n", card_type[lesc->sc_card]); 433 434 lesc->sc_iot = iot; 435 lesc->sc_memt = memt; 436 lesc->sc_dmat = dmat; 437 438 /* XXX SHOULD RE-MAP I/O SPACE HERE. */ 439 440 if (lesc->sc_card == DEPCA) { 441 u_char val; 442 int i; 443 444 /* Map shared memory. */ 445 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 446 0, &memh)) 447 panic("le_isa_attach: can't map shared memory"); 448 449 lesc->sc_memh = memh; 450 451 val = 0xff; 452 for (;;) { 453 bus_space_set_region_1(memt, memh, 0, val, 454 ia->ia_msize); 455 for (i = 0; i < ia->ia_msize; i++) 456 if (bus_space_read_1(memt, memh, 1) != val) { 457 printf("%s: failed to clear memory\n", 458 sc->sc_dev.dv_xname); 459 return; 460 } 461 if (val == 0x00) 462 break; 463 val -= 0x55; 464 } 465 466 sc->sc_conf3 = LE_C3_ACON; 467 sc->sc_mem = 0; /* Not used. */ 468 sc->sc_addr = 0; 469 sc->sc_memsize = ia->ia_msize; 470 } else { 471 /* 472 * Allocate a DMA area for the card. 473 */ 474 if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, NBPG, 0, &seg, 1, 475 &rseg, BUS_DMA_NOWAIT)) { 476 printf("%s: couldn't allocate memory for card\n", 477 sc->sc_dev.dv_xname); 478 return; 479 } 480 if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE, 481 (caddr_t *)&sc->sc_mem, 482 BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC)) { 483 printf("%s: couldn't map memory for card\n", 484 sc->sc_dev.dv_xname); 485 return; 486 } 487 488 /* 489 * Create and load the DMA map for the DMA area. 490 */ 491 if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1, 492 LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { 493 printf("%s: couldn't create DMA map\n", 494 sc->sc_dev.dv_xname); 495 bus_dmamem_free(dmat, &seg, rseg); 496 return; 497 } 498 if (bus_dmamap_load(dmat, lesc->sc_dmam, 499 sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { 500 printf("%s: coundn't load DMA map\n", 501 sc->sc_dev.dv_xname); 502 bus_dmamem_free(dmat, &seg, rseg); 503 return; 504 } 505 506 sc->sc_conf3 = 0; 507 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; 508 sc->sc_memsize = LE_ISA_MEMSIZE; 509 } 510 511 if (lesc->sc_card == DEPCA) { 512 sc->sc_copytodesc = depca_copytobuf; 513 sc->sc_copyfromdesc = depca_copyfrombuf; 514 sc->sc_copytobuf = depca_copytobuf; 515 sc->sc_copyfrombuf = depca_copyfrombuf; 516 sc->sc_zerobuf = depca_zerobuf; 517 } else { 518 sc->sc_copytodesc = am7990_copytobuf_contig; 519 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 520 sc->sc_copytobuf = am7990_copytobuf_contig; 521 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 522 sc->sc_zerobuf = am7990_zerobuf_contig; 523 } 524 525 sc->sc_rdcsr = le_isa_rdcsr; 526 sc->sc_wrcsr = le_isa_wrcsr; 527 sc->sc_hwinit = NULL; 528 529 printf("%s", sc->sc_dev.dv_xname); 530 am7990_config(sc); 531 532 if (ia->ia_drq != DRQUNK) 533 isa_dmacascade(parent, ia->ia_drq); 534 535 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 536 IPL_NET, le_isa_intredge, sc); 537 } 538 539 /* 540 * Controller interrupt. 541 */ 542 int 543 le_isa_intredge(arg) 544 void *arg; 545 { 546 547 if (am7990_intr(arg) == 0) 548 return (0); 549 for (;;) 550 if (am7990_intr(arg) == 0) 551 return (1); 552 } 553 554 /* 555 * DEPCA shared memory access functions. 556 */ 557 558 void 559 depca_copytobuf(sc, from, boff, len) 560 struct am7990_softc *sc; 561 void *from; 562 int boff, len; 563 { 564 struct le_softc *lesc = (struct le_softc *)sc; 565 566 bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff, 567 from, len); 568 } 569 570 void 571 depca_copyfrombuf(sc, to, boff, len) 572 struct am7990_softc *sc; 573 void *to; 574 int boff, len; 575 { 576 struct le_softc *lesc = (struct le_softc *)sc; 577 578 bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff, 579 to, len); 580 } 581 582 void 583 depca_zerobuf(sc, boff, len) 584 struct am7990_softc *sc; 585 int boff, len; 586 { 587 struct le_softc *lesc = (struct le_softc *)sc; 588 589 #if 0 /* XXX !! */ 590 bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff, 591 0x00, len); 592 #else 593 for (; len != 0; boff++, len--) 594 bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00); 595 #endif 596 } 597
Indexes created Tue Sep 30 20:09:53 GMT 2025