if_le_isa.c revision 1.9
1 /* $NetBSD: if_le_isa.c,v 1.9 1997/03/15 18:11:48 is Exp $ */ 2 3 /*- 4 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Ralph Campbell and Rick Macklem. 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 University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 40 */ 41 42 #include "bpfilter.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/mbuf.h> 47 #include <sys/syslog.h> 48 #include <sys/socket.h> 49 #include <sys/device.h> 50 51 #include <net/if.h> 52 #include <net/if_ether.h> 53 54 #ifdef INET 55 #include <netinet/in.h> 56 #include <netinet/if_inarp.h> 57 #endif 58 59 #include <vm/vm.h> 60 61 #include <machine/cpu.h> 62 #include <machine/intr.h> 63 #include <machine/bus.h> 64 65 #include <dev/isa/isareg.h> 66 #include <dev/isa/isavar.h> 67 #include <dev/isa/isadmavar.h> 68 69 #include <dev/ic/am7990reg.h> 70 #include <dev/ic/am7990var.h> 71 72 #include <dev/isa/if_levar.h> 73 74 static char *card_type[] = 75 { "unknown", "BICC Isolan", "NE2100", "DEPCA", "PCnet-ISA" }; 76 77 int le_isa_probe __P((struct device *, void *, void *)); 78 void le_isa_attach __P((struct device *, struct device *, void *)); 79 80 struct cfattach le_isa_ca = { 81 sizeof(struct le_softc), le_isa_probe, le_isa_attach 82 }; 83 84 int depca_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 85 int ne2100_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 86 int bicc_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 87 int lance_isa_probe __P((struct am7990_softc *)); 88 89 int le_isa_intredge __P((void *)); 90 91 hide void le_isa_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 92 hide u_int16_t le_isa_rdcsr __P((struct am7990_softc *, u_int16_t)); 93 94 void depca_copytobuf __P((struct am7990_softc *, void *, int, int)); 95 void depca_copyfrombuf __P((struct am7990_softc *, void *, int, int)); 96 void depca_zerobuf __P((struct am7990_softc *, int, int)); 97 98 hide void 99 le_isa_wrcsr(sc, port, val) 100 struct am7990_softc *sc; 101 u_int16_t port, val; 102 { 103 struct le_softc *lesc = (struct le_softc *)sc; 104 bus_space_tag_t iot = lesc->sc_iot; 105 bus_space_handle_t ioh = lesc->sc_ioh; 106 107 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 108 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 109 } 110 111 hide u_int16_t 112 le_isa_rdcsr(sc, port) 113 struct am7990_softc *sc; 114 u_int16_t port; 115 { 116 struct le_softc *lesc = (struct le_softc *)sc; 117 bus_space_tag_t iot = lesc->sc_iot; 118 bus_space_handle_t ioh = lesc->sc_ioh; 119 u_int16_t val; 120 121 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 122 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 123 return (val); 124 } 125 126 int 127 le_isa_probe(parent, match, aux) 128 struct device *parent; 129 void *match, *aux; 130 { 131 struct le_softc *lesc = match; 132 struct isa_attach_args *ia = aux; 133 134 if (bicc_isa_probe(lesc, ia)) 135 return (1); 136 if (ne2100_isa_probe(lesc, ia)) 137 return (1); 138 if (depca_isa_probe(lesc, ia)) 139 return (1); 140 141 return (0); 142 } 143 144 int 145 depca_isa_probe(lesc, ia) 146 struct le_softc *lesc; 147 struct isa_attach_args *ia; 148 { 149 struct am7990_softc *sc = &lesc->sc_am7990; 150 int iobase = ia->ia_iobase, port; 151 bus_space_tag_t iot = ia->ia_iot; 152 bus_space_handle_t ioh; 153 bus_space_handle_t memh; 154 #if 0 155 u_int32_t sum, rom_sum; 156 u_int8_t x; 157 #endif 158 int i; 159 160 /* Map i/o space. */ 161 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 162 return 0; 163 164 if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1) 165 goto bad; 166 167 /* Map card RAM. */ 168 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 169 0, &memh)) 170 goto bad; 171 172 /* Just needed to check mapability; don't need it anymore. */ 173 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 174 175 lesc->sc_iot = iot; 176 lesc->sc_ioh = ioh; 177 lesc->sc_rap = DEPCA_RAP; 178 lesc->sc_rdp = DEPCA_RDP; 179 lesc->sc_card = DEPCA; 180 181 if (lance_isa_probe(sc) == 0) 182 goto bad; 183 184 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM); 185 186 /* 187 * Extract the physical MAC address from the ROM. 188 * 189 * The address PROM is 32 bytes wide, and we access it through 190 * a single I/O port. On each read, it rotates to the next 191 * position. We find the ethernet address by looking for a 192 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 193 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 194 * ethernet address and a checksum). 195 * 196 * It appears that the PROM can be at one of two locations, so 197 * we just try both. 198 */ 199 port = DEPCA_ADP; 200 for (i = 0; i < 32; i++) 201 if (bus_space_read_1(iot, ioh, port) == 0xff && 202 bus_space_read_1(iot, ioh, port) == 0x00 && 203 bus_space_read_1(iot, ioh, port) == 0x55 && 204 bus_space_read_1(iot, ioh, port) == 0xaa && 205 bus_space_read_1(iot, ioh, port) == 0xff && 206 bus_space_read_1(iot, ioh, port) == 0x00 && 207 bus_space_read_1(iot, ioh, port) == 0x55 && 208 bus_space_read_1(iot, ioh, port) == 0xaa) 209 goto found; 210 port = DEPCA_ADP + 1; 211 for (i = 0; i < 32; i++) 212 if (bus_space_read_1(iot, ioh, port) == 0xff && 213 bus_space_read_1(iot, ioh, port) == 0x00 && 214 bus_space_read_1(iot, ioh, port) == 0x55 && 215 bus_space_read_1(iot, ioh, port) == 0xaa && 216 bus_space_read_1(iot, ioh, port) == 0xff && 217 bus_space_read_1(iot, ioh, port) == 0x00 && 218 bus_space_read_1(iot, ioh, port) == 0x55 && 219 bus_space_read_1(iot, ioh, port) == 0xaa) 220 goto found; 221 printf("%s: address not found\n", sc->sc_dev.dv_xname); 222 goto bad; 223 224 found: 225 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 226 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, port); 227 228 #if 0 229 sum = 230 (sc->sc_enaddr[0] << 2) + 231 (sc->sc_enaddr[1] << 10) + 232 (sc->sc_enaddr[2] << 1) + 233 (sc->sc_enaddr[3] << 9) + 234 (sc->sc_enaddr[4] << 0) + 235 (sc->sc_enaddr[5] << 8); 236 sum = (sum & 0xffff) + (sum >> 16); 237 sum = (sum & 0xffff) + (sum >> 16); 238 239 rom_sum = bus_space_read_1(iot, ioh, port); 240 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 241 242 if (sum != rom_sum) { 243 printf("%s: checksum mismatch; calculated %04x != read %04x", 244 sc->sc_dev.dv_xname, sum, rom_sum); 245 goto bad; 246 } 247 #endif 248 249 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_NORMAL); 250 251 /* 252 * XXX INDIRECT BROKENNESS! 253 * XXX Should always unmap, and re-map in if_le_isa_attach(). 254 */ 255 256 ia->ia_iosize = 16; 257 ia->ia_drq = DRQUNK; 258 return 1; 259 260 bad: 261 bus_space_unmap(iot, ioh, 16); 262 return 0; 263 } 264 265 int 266 ne2100_isa_probe(lesc, ia) 267 struct le_softc *lesc; 268 struct isa_attach_args *ia; 269 { 270 struct am7990_softc *sc = &lesc->sc_am7990; 271 int iobase = ia->ia_iobase; 272 bus_space_tag_t iot = ia->ia_iot; 273 bus_space_handle_t ioh; 274 int i; 275 276 /* Map i/o space. */ 277 if (bus_space_map(iot, iobase, 24, 0, &ioh)) 278 return 0; 279 280 lesc->sc_iot = iot; 281 lesc->sc_ioh = ioh; 282 lesc->sc_rap = NE2100_RAP; 283 lesc->sc_rdp = NE2100_RDP; 284 lesc->sc_card = NE2100; 285 286 if (lance_isa_probe(sc) == 0) { 287 bus_space_unmap(iot, ioh, 24); 288 return 0; 289 } 290 291 /* 292 * Extract the physical MAC address from the ROM. 293 */ 294 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 295 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); 296 297 /* 298 * XXX INDIRECT BROKENNESS! 299 * XXX Should always unmap, and re-map in if_le_isa_attach(). 300 */ 301 302 ia->ia_iosize = 24; 303 return 1; 304 } 305 306 int 307 bicc_isa_probe(lesc, ia) 308 struct le_softc *lesc; 309 struct isa_attach_args *ia; 310 { 311 struct am7990_softc *sc = &lesc->sc_am7990; 312 int iobase = ia->ia_iobase; 313 bus_space_tag_t iot = ia->ia_iot; 314 bus_space_handle_t ioh; 315 int i; 316 317 /* Map i/o space. */ 318 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 319 return 0; 320 321 lesc->sc_iot = iot; 322 lesc->sc_ioh = ioh; 323 lesc->sc_rap = BICC_RAP; 324 lesc->sc_rdp = BICC_RDP; 325 lesc->sc_card = BICC; 326 327 if (lance_isa_probe(sc) == 0) { 328 bus_space_unmap(iot, ioh, 16); 329 return 0; 330 } 331 332 /* 333 * Extract the physical MAC address from the ROM. 334 */ 335 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 336 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i * 2); 337 338 /* 339 * XXX INDIRECT BROKENNESS! 340 * XXX Should always unmap, and re-map in if_le_isa_attach(). 341 */ 342 343 ia->ia_iosize = 16; 344 return 1; 345 } 346 347 /* 348 * Determine which chip is present on the card. 349 */ 350 int 351 lance_isa_probe(sc) 352 struct am7990_softc *sc; 353 { 354 355 /* Stop the LANCE chip and put it in a known state. */ 356 le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP); 357 delay(100); 358 359 if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP) 360 return 0; 361 362 le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3); 363 return 1; 364 } 365 366 void 367 le_isa_attach(parent, self, aux) 368 struct device *parent, *self; 369 void *aux; 370 { 371 struct le_softc *lesc = (void *)self; 372 struct am7990_softc *sc = &lesc->sc_am7990; 373 struct isa_attach_args *ia = aux; 374 bus_space_tag_t iot = ia->ia_iot; 375 bus_space_tag_t memt = ia->ia_memt; 376 bus_space_handle_t memh; 377 378 printf(": %s Ethernet\n", card_type[lesc->sc_card]); 379 380 lesc->sc_iot = iot; 381 lesc->sc_memt = memt; 382 383 /* XXX SHOULD RE-MAP I/O SPACE HERE. */ 384 385 if (lesc->sc_card == DEPCA) { 386 u_char val; 387 int i; 388 389 /* Map shared memory. */ 390 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 391 0, &memh)) 392 panic("le_isa_attach: can't map shared memory"); 393 394 lesc->sc_memh = memh; 395 396 val = 0xff; 397 for (;;) { 398 #if 0 /* XXX !! */ 399 bus_space_set_region_1(memt, memh, 0, val); 400 #else 401 for (i = 0; i < ia->ia_msize; i++) 402 bus_space_write_1(memt, memh, i, val); 403 #endif 404 for (i = 0; i < ia->ia_msize; i++) 405 if (bus_space_read_1(memt, memh, 1) != val) { 406 printf("%s: failed to clear memory\n", 407 sc->sc_dev.dv_xname); 408 return; 409 } 410 if (val == 0x00) 411 break; 412 val -= 0x55; 413 } 414 415 sc->sc_conf3 = LE_C3_ACON; 416 sc->sc_mem = 0; /* Not used. */ 417 sc->sc_addr = 0; 418 sc->sc_memsize = ia->ia_msize; 419 } else { 420 sc->sc_mem = malloc(16384, M_DEVBUF, M_NOWAIT); 421 if (sc->sc_mem == 0) { 422 printf("%s: couldn't allocate memory for card\n", 423 sc->sc_dev.dv_xname); 424 return; 425 } 426 427 sc->sc_conf3 = 0; 428 sc->sc_addr = kvtop(sc->sc_mem); /* XXX !! */ 429 sc->sc_memsize = 16384; 430 } 431 432 if (lesc->sc_card == DEPCA) { 433 sc->sc_copytodesc = depca_copytobuf; 434 sc->sc_copyfromdesc = depca_copyfrombuf; 435 sc->sc_copytobuf = depca_copytobuf; 436 sc->sc_copyfrombuf = depca_copyfrombuf; 437 sc->sc_zerobuf = depca_zerobuf; 438 } else { 439 sc->sc_copytodesc = am7990_copytobuf_contig; 440 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 441 sc->sc_copytobuf = am7990_copytobuf_contig; 442 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 443 sc->sc_zerobuf = am7990_zerobuf_contig; 444 } 445 446 sc->sc_rdcsr = le_isa_rdcsr; 447 sc->sc_wrcsr = le_isa_wrcsr; 448 sc->sc_hwinit = NULL; 449 450 printf("%s", sc->sc_dev.dv_xname); 451 am7990_config(sc); 452 453 if (ia->ia_drq != DRQUNK) 454 isa_dmacascade(ia->ia_drq); 455 456 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 457 IPL_NET, le_isa_intredge, sc); 458 } 459 460 /* 461 * Controller interrupt. 462 */ 463 int 464 le_isa_intredge(arg) 465 void *arg; 466 { 467 468 if (am7990_intr(arg) == 0) 469 return (0); 470 for (;;) 471 if (am7990_intr(arg) == 0) 472 return (1); 473 } 474 475 /* 476 * DEPCA shared memory access functions. 477 */ 478 479 void 480 depca_copytobuf(sc, from, boff, len) 481 struct am7990_softc *sc; 482 void *from; 483 int boff, len; 484 { 485 struct le_softc *lesc = (struct le_softc *)sc; 486 487 bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff, 488 from, len); 489 } 490 491 void 492 depca_copyfrombuf(sc, to, boff, len) 493 struct am7990_softc *sc; 494 void *to; 495 int boff, len; 496 { 497 struct le_softc *lesc = (struct le_softc *)sc; 498 499 bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff, 500 to, len); 501 } 502 503 void 504 depca_zerobuf(sc, boff, len) 505 struct am7990_softc *sc; 506 int boff, len; 507 { 508 struct le_softc *lesc = (struct le_softc *)sc; 509 510 #if 0 /* XXX !! */ 511 bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff, 512 0x00, len); 513 #else 514 for (; len != 0; boff++, len--) 515 bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00); 516 #endif 517 } 518
Indexes created Tue Sep 30 20:09:53 GMT 2025