if_le_isa.c revision 1.11
1 /* $NetBSD: if_le_isa.c,v 1.11 1997/06/06 23:43:52 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 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 #if 0 195 u_int32_t sum, rom_sum; 196 u_int8_t x; 197 #endif 198 int i; 199 200 /* Map i/o space. */ 201 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 202 return 0; 203 204 if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1) 205 goto bad; 206 207 /* Map card RAM. */ 208 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 209 0, &memh)) 210 goto bad; 211 212 /* Just needed to check mapability; don't need it anymore. */ 213 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 214 215 lesc->sc_iot = iot; 216 lesc->sc_ioh = ioh; 217 lesc->sc_rap = DEPCA_RAP; 218 lesc->sc_rdp = DEPCA_RDP; 219 lesc->sc_card = DEPCA; 220 221 if (lance_isa_probe(sc) == 0) 222 goto bad; 223 224 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM); 225 226 /* 227 * Extract the physical MAC address from the ROM. 228 * 229 * The address PROM is 32 bytes wide, and we access it through 230 * a single I/O port. On each read, it rotates to the next 231 * position. We find the ethernet address by looking for a 232 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 233 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 234 * ethernet address and a checksum). 235 * 236 * It appears that the PROM can be at one of two locations, so 237 * we just try both. 238 */ 239 port = DEPCA_ADP; 240 for (i = 0; i < 32; i++) 241 if (bus_space_read_1(iot, ioh, port) == 0xff && 242 bus_space_read_1(iot, ioh, port) == 0x00 && 243 bus_space_read_1(iot, ioh, port) == 0x55 && 244 bus_space_read_1(iot, ioh, port) == 0xaa && 245 bus_space_read_1(iot, ioh, port) == 0xff && 246 bus_space_read_1(iot, ioh, port) == 0x00 && 247 bus_space_read_1(iot, ioh, port) == 0x55 && 248 bus_space_read_1(iot, ioh, port) == 0xaa) 249 goto found; 250 port = DEPCA_ADP + 1; 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 printf("%s: address not found\n", sc->sc_dev.dv_xname); 262 goto bad; 263 264 found: 265 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 266 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, port); 267 268 #if 0 269 sum = 270 (sc->sc_enaddr[0] << 2) + 271 (sc->sc_enaddr[1] << 10) + 272 (sc->sc_enaddr[2] << 1) + 273 (sc->sc_enaddr[3] << 9) + 274 (sc->sc_enaddr[4] << 0) + 275 (sc->sc_enaddr[5] << 8); 276 sum = (sum & 0xffff) + (sum >> 16); 277 sum = (sum & 0xffff) + (sum >> 16); 278 279 rom_sum = bus_space_read_1(iot, ioh, port); 280 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 281 282 if (sum != rom_sum) { 283 printf("%s: checksum mismatch; calculated %04x != read %04x", 284 sc->sc_dev.dv_xname, sum, rom_sum); 285 goto bad; 286 } 287 #endif 288 289 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_NORMAL); 290 291 /* 292 * XXX INDIRECT BROKENNESS! 293 * XXX Should always unmap, and re-map in if_le_isa_attach(). 294 */ 295 296 ia->ia_iosize = 16; 297 ia->ia_drq = DRQUNK; 298 return 1; 299 300 bad: 301 bus_space_unmap(iot, ioh, 16); 302 return 0; 303 } 304 305 int 306 ne2100_isa_probe(lesc, ia) 307 struct le_softc *lesc; 308 struct isa_attach_args *ia; 309 { 310 struct am7990_softc *sc = &lesc->sc_am7990; 311 int iobase = ia->ia_iobase; 312 bus_space_tag_t iot = ia->ia_iot; 313 bus_space_handle_t ioh; 314 int i; 315 316 /* Map i/o space. */ 317 if (bus_space_map(iot, iobase, 24, 0, &ioh)) 318 return 0; 319 320 lesc->sc_iot = iot; 321 lesc->sc_ioh = ioh; 322 lesc->sc_rap = NE2100_RAP; 323 lesc->sc_rdp = NE2100_RDP; 324 lesc->sc_card = NE2100; 325 326 if (lance_isa_probe(sc) == 0) { 327 bus_space_unmap(iot, ioh, 24); 328 return 0; 329 } 330 331 /* 332 * Extract the physical MAC address from the ROM. 333 */ 334 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 335 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); 336 337 /* 338 * XXX INDIRECT BROKENNESS! 339 * XXX Should always unmap, and re-map in if_le_isa_attach(). 340 */ 341 342 ia->ia_iosize = 24; 343 return 1; 344 } 345 346 int 347 bicc_isa_probe(lesc, ia) 348 struct le_softc *lesc; 349 struct isa_attach_args *ia; 350 { 351 struct am7990_softc *sc = &lesc->sc_am7990; 352 int iobase = ia->ia_iobase; 353 bus_space_tag_t iot = ia->ia_iot; 354 bus_space_handle_t ioh; 355 int i; 356 357 /* Map i/o space. */ 358 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 359 return 0; 360 361 lesc->sc_iot = iot; 362 lesc->sc_ioh = ioh; 363 lesc->sc_rap = BICC_RAP; 364 lesc->sc_rdp = BICC_RDP; 365 lesc->sc_card = BICC; 366 367 if (lance_isa_probe(sc) == 0) { 368 bus_space_unmap(iot, ioh, 16); 369 return 0; 370 } 371 372 /* 373 * Extract the physical MAC address from the ROM. 374 */ 375 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 376 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i * 2); 377 378 /* 379 * XXX INDIRECT BROKENNESS! 380 * XXX Should always unmap, and re-map in if_le_isa_attach(). 381 */ 382 383 ia->ia_iosize = 16; 384 return 1; 385 } 386 387 /* 388 * Determine which chip is present on the card. 389 */ 390 int 391 lance_isa_probe(sc) 392 struct am7990_softc *sc; 393 { 394 395 /* Stop the LANCE chip and put it in a known state. */ 396 le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP); 397 delay(100); 398 399 if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP) 400 return 0; 401 402 le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3); 403 return 1; 404 } 405 406 void 407 le_isa_attach(parent, self, aux) 408 struct device *parent, *self; 409 void *aux; 410 { 411 struct le_softc *lesc = (void *)self; 412 struct am7990_softc *sc = &lesc->sc_am7990; 413 struct isa_attach_args *ia = aux; 414 bus_space_tag_t iot = ia->ia_iot; 415 bus_space_tag_t memt = ia->ia_memt; 416 bus_dma_tag_t dmat = ia->ia_dmat; 417 bus_space_handle_t memh; 418 bus_dma_segment_t seg; 419 int rseg; 420 421 printf(": %s Ethernet\n", card_type[lesc->sc_card]); 422 423 lesc->sc_iot = iot; 424 lesc->sc_memt = memt; 425 lesc->sc_dmat = dmat; 426 427 /* XXX SHOULD RE-MAP I/O SPACE HERE. */ 428 429 if (lesc->sc_card == DEPCA) { 430 u_char val; 431 int i; 432 433 /* Map shared memory. */ 434 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 435 0, &memh)) 436 panic("le_isa_attach: can't map shared memory"); 437 438 lesc->sc_memh = memh; 439 440 val = 0xff; 441 for (;;) { 442 bus_space_set_region_1(memt, memh, 0, val, 443 ia->ia_msize); 444 for (i = 0; i < ia->ia_msize; i++) 445 if (bus_space_read_1(memt, memh, 1) != val) { 446 printf("%s: failed to clear memory\n", 447 sc->sc_dev.dv_xname); 448 return; 449 } 450 if (val == 0x00) 451 break; 452 val -= 0x55; 453 } 454 455 sc->sc_conf3 = LE_C3_ACON; 456 sc->sc_mem = 0; /* Not used. */ 457 sc->sc_addr = 0; 458 sc->sc_memsize = ia->ia_msize; 459 } else { 460 /* 461 * Allocate a DMA area for the card. 462 */ 463 if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, NBPG, 0, &seg, 1, 464 &rseg, BUS_DMA_NOWAIT)) { 465 printf("%s: couldn't allocate memory for card\n", 466 sc->sc_dev.dv_xname); 467 return; 468 } 469 if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE, 470 (caddr_t *)&sc->sc_mem, 471 BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC)) { 472 printf("%s: couldn't map memory for card\n", 473 sc->sc_dev.dv_xname); 474 return; 475 } 476 477 /* 478 * Create and load the DMA map for the DMA area. 479 */ 480 if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1, 481 LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { 482 printf("%s: couldn't create DMA map\n", 483 sc->sc_dev.dv_xname); 484 bus_dmamem_free(dmat, &seg, rseg); 485 return; 486 } 487 if (bus_dmamap_load(dmat, lesc->sc_dmam, 488 sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { 489 printf("%s: coundn't load DMA map\n", 490 sc->sc_dev.dv_xname); 491 bus_dmamem_free(dmat, &seg, rseg); 492 return; 493 } 494 495 sc->sc_conf3 = 0; 496 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; 497 sc->sc_memsize = LE_ISA_MEMSIZE; 498 } 499 500 if (lesc->sc_card == DEPCA) { 501 sc->sc_copytodesc = depca_copytobuf; 502 sc->sc_copyfromdesc = depca_copyfrombuf; 503 sc->sc_copytobuf = depca_copytobuf; 504 sc->sc_copyfrombuf = depca_copyfrombuf; 505 sc->sc_zerobuf = depca_zerobuf; 506 } else { 507 sc->sc_copytodesc = am7990_copytobuf_contig; 508 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 509 sc->sc_copytobuf = am7990_copytobuf_contig; 510 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 511 sc->sc_zerobuf = am7990_zerobuf_contig; 512 } 513 514 sc->sc_rdcsr = le_isa_rdcsr; 515 sc->sc_wrcsr = le_isa_wrcsr; 516 sc->sc_hwinit = NULL; 517 518 printf("%s", sc->sc_dev.dv_xname); 519 am7990_config(sc); 520 521 if (ia->ia_drq != DRQUNK) 522 isa_dmacascade(parent, ia->ia_drq); 523 524 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 525 IPL_NET, le_isa_intredge, sc); 526 } 527 528 /* 529 * Controller interrupt. 530 */ 531 int 532 le_isa_intredge(arg) 533 void *arg; 534 { 535 536 if (am7990_intr(arg) == 0) 537 return (0); 538 for (;;) 539 if (am7990_intr(arg) == 0) 540 return (1); 541 } 542 543 /* 544 * DEPCA shared memory access functions. 545 */ 546 547 void 548 depca_copytobuf(sc, from, boff, len) 549 struct am7990_softc *sc; 550 void *from; 551 int boff, len; 552 { 553 struct le_softc *lesc = (struct le_softc *)sc; 554 555 bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff, 556 from, len); 557 } 558 559 void 560 depca_copyfrombuf(sc, to, boff, len) 561 struct am7990_softc *sc; 562 void *to; 563 int boff, len; 564 { 565 struct le_softc *lesc = (struct le_softc *)sc; 566 567 bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff, 568 to, len); 569 } 570 571 void 572 depca_zerobuf(sc, boff, len) 573 struct am7990_softc *sc; 574 int boff, len; 575 { 576 struct le_softc *lesc = (struct le_softc *)sc; 577 578 #if 0 /* XXX !! */ 579 bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff, 580 0x00, len); 581 #else 582 for (; len != 0; boff++, len--) 583 bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00); 584 #endif 585 } 586
Indexes created Tue Sep 30 20:09:53 GMT 2025