if_le_isa.c revision 1.6
1 /* $NetBSD: if_le_isa.c,v 1.6 1996/12/02 05:44:17 thorpej 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 53 #ifdef INET 54 #include <netinet/in.h> 55 #include <netinet/if_ether.h> 56 #endif 57 58 #include <vm/vm.h> 59 60 #include <machine/cpu.h> 61 #include <machine/intr.h> 62 #include <machine/bus.h> 63 64 #include <dev/isa/isareg.h> 65 #include <dev/isa/isavar.h> 66 #include <dev/isa/isadmavar.h> 67 68 #include <dev/ic/am7990reg.h> 69 #include <dev/ic/am7990var.h> 70 71 #include <dev/isa/if_levar.h> 72 73 static char *card_type[] = 74 { "unknown", "BICC Isolan", "NE2100", "DEPCA", "PCnet-ISA" }; 75 76 int le_isa_probe __P((struct device *, void *, void *)); 77 void le_isa_attach __P((struct device *, struct device *, void *)); 78 79 struct cfattach le_isa_ca = { 80 sizeof(struct le_softc), le_isa_probe, le_isa_attach 81 }; 82 83 int depca_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 84 int ne2100_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 85 int bicc_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 86 int lance_isa_probe __P((struct am7990_softc *)); 87 88 int le_isa_intredge __P((void *)); 89 90 hide void le_isa_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 91 hide u_int16_t le_isa_rdcsr __P((struct am7990_softc *, u_int16_t)); 92 93 void depca_copytobuf __P((struct am7990_softc *, void *, int, int)); 94 void depca_copyfrombuf __P((struct am7990_softc *, void *, int, int)); 95 void depca_zerobuf __P((struct am7990_softc *, int, int)); 96 97 hide void 98 le_isa_wrcsr(sc, port, val) 99 struct am7990_softc *sc; 100 u_int16_t port, val; 101 { 102 struct le_softc *lesc = (struct le_softc *)sc; 103 bus_space_tag_t iot = lesc->sc_iot; 104 bus_space_handle_t ioh = lesc->sc_ioh; 105 106 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 107 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 108 } 109 110 hide u_int16_t 111 le_isa_rdcsr(sc, port) 112 struct am7990_softc *sc; 113 u_int16_t port; 114 { 115 struct le_softc *lesc = (struct le_softc *)sc; 116 bus_space_tag_t iot = lesc->sc_iot; 117 bus_space_handle_t ioh = lesc->sc_ioh; 118 u_int16_t val; 119 120 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 121 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 122 return (val); 123 } 124 125 int 126 le_isa_probe(parent, match, aux) 127 struct device *parent; 128 void *match, *aux; 129 { 130 struct le_softc *lesc = match; 131 struct isa_attach_args *ia = aux; 132 133 if (bicc_isa_probe(lesc, ia)) 134 return (1); 135 if (ne2100_isa_probe(lesc, ia)) 136 return (1); 137 if (depca_isa_probe(lesc, ia)) 138 return (1); 139 140 return (0); 141 } 142 143 int 144 depca_isa_probe(lesc, ia) 145 struct le_softc *lesc; 146 struct isa_attach_args *ia; 147 { 148 struct am7990_softc *sc = &lesc->sc_am7990; 149 int iobase = ia->ia_iobase, port; 150 bus_space_tag_t iot = ia->ia_iot; 151 bus_space_handle_t ioh; 152 bus_space_handle_t memh; 153 #if 0 154 u_int32_t sum, rom_sum; 155 u_int8_t x; 156 #endif 157 int i; 158 159 /* Map i/o space. */ 160 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 161 return 0; 162 163 if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1) 164 goto bad; 165 166 /* Map card RAM. */ 167 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 168 0, &memh)) 169 goto bad; 170 171 /* Just needed to check mapability; don't need it anymore. */ 172 bus_space_unmap(ia->ia_memt, ia->ia_maddr, ia->ia_msize); 173 174 lesc->sc_rap = DEPCA_RAP; 175 lesc->sc_rdp = DEPCA_RDP; 176 lesc->sc_card = DEPCA; 177 178 if (lance_isa_probe(sc) == 0) 179 goto bad; 180 181 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM); 182 183 /* 184 * Extract the physical MAC address from the ROM. 185 * 186 * The address PROM is 32 bytes wide, and we access it through 187 * a single I/O port. On each read, it rotates to the next 188 * position. We find the ethernet address by looking for a 189 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 190 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 191 * ethernet address and a checksum). 192 * 193 * It appears that the PROM can be at one of two locations, so 194 * we just try both. 195 */ 196 port = DEPCA_ADP; 197 for (i = 0; i < 32; i++) 198 if (bus_space_read_1(iot, ioh, port) == 0xff && 199 bus_space_read_1(iot, ioh, port) == 0x00 && 200 bus_space_read_1(iot, ioh, port) == 0x55 && 201 bus_space_read_1(iot, ioh, port) == 0xaa && 202 bus_space_read_1(iot, ioh, port) == 0xff && 203 bus_space_read_1(iot, ioh, port) == 0x00 && 204 bus_space_read_1(iot, ioh, port) == 0x55 && 205 bus_space_read_1(iot, ioh, port) == 0xaa) 206 goto found; 207 port = DEPCA_ADP + 1; 208 for (i = 0; i < 32; i++) 209 if (bus_space_read_1(iot, ioh, port) == 0xff && 210 bus_space_read_1(iot, ioh, port) == 0x00 && 211 bus_space_read_1(iot, ioh, port) == 0x55 && 212 bus_space_read_1(iot, ioh, port) == 0xaa && 213 bus_space_read_1(iot, ioh, port) == 0xff && 214 bus_space_read_1(iot, ioh, port) == 0x00 && 215 bus_space_read_1(iot, ioh, port) == 0x55 && 216 bus_space_read_1(iot, ioh, port) == 0xaa) 217 goto found; 218 printf("%s: address not found\n", sc->sc_dev.dv_xname); 219 goto bad; 220 221 found: 222 for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) 223 sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, port); 224 225 #if 0 226 sum = 227 (sc->sc_arpcom.ac_enaddr[0] << 2) + 228 (sc->sc_arpcom.ac_enaddr[1] << 10) + 229 (sc->sc_arpcom.ac_enaddr[2] << 1) + 230 (sc->sc_arpcom.ac_enaddr[3] << 9) + 231 (sc->sc_arpcom.ac_enaddr[4] << 0) + 232 (sc->sc_arpcom.ac_enaddr[5] << 8); 233 sum = (sum & 0xffff) + (sum >> 16); 234 sum = (sum & 0xffff) + (sum >> 16); 235 236 rom_sum = bus_space_read_1(iot, ioh, port); 237 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 238 239 if (sum != rom_sum) { 240 printf("%s: checksum mismatch; calculated %04x != read %04x", 241 sc->sc_dev.dv_xname, sum, rom_sum); 242 goto bad; 243 } 244 #endif 245 246 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_NORMAL); 247 248 /* 249 * XXX INDIRECT BROKENNESS! 250 * XXX Should always unmap, and re-map in if_le_isa_attach(). 251 */ 252 lesc->sc_iot = iot; 253 lesc->sc_ioh = ioh; 254 255 ia->ia_iosize = 16; 256 ia->ia_drq = DRQUNK; 257 return 1; 258 259 bad: 260 bus_space_unmap(iot, ioh, 16); 261 return 0; 262 } 263 264 int 265 ne2100_isa_probe(lesc, ia) 266 struct le_softc *lesc; 267 struct isa_attach_args *ia; 268 { 269 struct am7990_softc *sc = &lesc->sc_am7990; 270 int iobase = ia->ia_iobase; 271 bus_space_tag_t iot = ia->ia_iot; 272 bus_space_handle_t ioh; 273 int i; 274 275 /* Map i/o space. */ 276 if (bus_space_map(iot, iobase, 24, 0, &ioh)) 277 return 0; 278 279 lesc->sc_rap = NE2100_RAP; 280 lesc->sc_rdp = NE2100_RDP; 281 lesc->sc_card = NE2100; 282 283 if (lance_isa_probe(sc) == 0) { 284 bus_space_unmap(iot, ioh, 24); 285 return 0; 286 } 287 288 /* 289 * Extract the physical MAC address from the ROM. 290 */ 291 for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) 292 sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, i); 293 294 /* 295 * XXX INDIRECT BROKENNESS! 296 * XXX Should always unmap, and re-map in if_le_isa_attach(). 297 */ 298 lesc->sc_iot = iot; 299 lesc->sc_ioh = ioh; 300 301 ia->ia_iosize = 24; 302 return 1; 303 } 304 305 int 306 bicc_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, 16, 0, &ioh)) 318 return 0; 319 320 lesc->sc_rap = BICC_RAP; 321 lesc->sc_rdp = BICC_RDP; 322 lesc->sc_card = BICC; 323 324 if (lance_isa_probe(sc) == 0) { 325 bus_space_unmap(iot, ioh, 16); 326 return 0; 327 } 328 329 /* 330 * Extract the physical MAC address from the ROM. 331 */ 332 for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) 333 sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, i * 2); 334 335 /* 336 * XXX INDIRECT BROKENNESS! 337 * XXX Should always unmap, and re-map in if_le_isa_attach(). 338 */ 339 lesc->sc_iot = iot; 340 lesc->sc_ioh = ioh; 341 342 ia->ia_iosize = 16; 343 return 1; 344 } 345 346 /* 347 * Determine which chip is present on the card. 348 */ 349 int 350 lance_isa_probe(sc) 351 struct am7990_softc *sc; 352 { 353 354 /* Stop the LANCE chip and put it in a known state. */ 355 le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP); 356 delay(100); 357 358 if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP) 359 return 0; 360 361 le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3); 362 return 1; 363 } 364 365 void 366 le_isa_attach(parent, self, aux) 367 struct device *parent, *self; 368 void *aux; 369 { 370 struct le_softc *lesc = (void *)self; 371 struct am7990_softc *sc = &lesc->sc_am7990; 372 struct isa_attach_args *ia = aux; 373 bus_space_tag_t iot = ia->ia_iot; 374 bus_space_tag_t memt = ia->ia_memt; 375 bus_space_handle_t memh; 376 377 printf(": %s Ethernet\n", card_type[lesc->sc_card]); 378 379 lesc->sc_iot = iot; 380 lesc->sc_memt = memt; 381 382 /* XXX SHOULD RE-MAP I/O SPACE HERE. */ 383 384 if (lesc->sc_card == DEPCA) { 385 u_char val; 386 int i; 387 388 /* Map shared memory. */ 389 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 390 0, &memh)) 391 panic("le_isa_attach: can't map shared memory"); 392 393 lesc->sc_memh = memh; 394 395 val = 0xff; 396 for (;;) { 397 #if 0 /* XXX !! */ 398 bus_space_set_region_1(memt, memh, 0, val); 399 #else 400 for (i = 0; i < ia->ia_msize; i++) 401 bus_space_write_1(memt, memh, i, val); 402 #endif 403 for (i = 0; i < ia->ia_msize; i++) 404 if (bus_space_read_1(memt, memh, 1) != val) { 405 printf("%s: failed to clear memory\n", 406 sc->sc_dev.dv_xname); 407 return; 408 } 409 if (val == 0x00) 410 break; 411 val -= 0x55; 412 } 413 414 sc->sc_conf3 = LE_C3_ACON; 415 sc->sc_mem = 0; /* Not used. */ 416 sc->sc_addr = 0; 417 sc->sc_memsize = ia->ia_msize; 418 } else { 419 sc->sc_mem = malloc(16384, M_DEVBUF, M_NOWAIT); 420 if (sc->sc_mem == 0) { 421 printf("%s: couldn't allocate memory for card\n", 422 sc->sc_dev.dv_xname); 423 return; 424 } 425 426 sc->sc_conf3 = 0; 427 sc->sc_addr = kvtop(sc->sc_mem); /* XXX !! */ 428 sc->sc_memsize = 16384; 429 } 430 431 if (lesc->sc_card == DEPCA) { 432 sc->sc_copytodesc = depca_copytobuf; 433 sc->sc_copyfromdesc = depca_copyfrombuf; 434 sc->sc_copytobuf = depca_copytobuf; 435 sc->sc_copyfrombuf = depca_copyfrombuf; 436 sc->sc_zerobuf = depca_zerobuf; 437 } else { 438 sc->sc_copytodesc = am7990_copytobuf_contig; 439 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 440 sc->sc_copytobuf = am7990_copytobuf_contig; 441 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 442 sc->sc_zerobuf = am7990_zerobuf_contig; 443 } 444 445 sc->sc_rdcsr = le_isa_rdcsr; 446 sc->sc_wrcsr = le_isa_wrcsr; 447 sc->sc_hwinit = NULL; 448 449 printf("%s", sc->sc_dev.dv_xname); 450 am7990_config(sc); 451 452 if (ia->ia_drq != DRQUNK) 453 isa_dmacascade(ia->ia_drq); 454 455 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 456 IPL_NET, le_isa_intredge, sc); 457 } 458 459 /* 460 * Controller interrupt. 461 */ 462 int 463 le_isa_intredge(arg) 464 void *arg; 465 { 466 467 if (am7990_intr(arg) == 0) 468 return (0); 469 for (;;) 470 if (am7990_intr(arg) == 0) 471 return (1); 472 } 473 474 /* 475 * DEPCA shared memory access functions. 476 */ 477 478 void 479 depca_copytobuf(sc, from, boff, len) 480 struct am7990_softc *sc; 481 void *from; 482 int boff, len; 483 { 484 struct le_softc *lesc = (struct le_softc *)sc; 485 486 bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff, 487 from, len); 488 } 489 490 void 491 depca_copyfrombuf(sc, to, boff, len) 492 struct am7990_softc *sc; 493 void *to; 494 int boff, len; 495 { 496 struct le_softc *lesc = (struct le_softc *)sc; 497 498 bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff, 499 to, len); 500 } 501 502 void 503 depca_zerobuf(sc, boff, len) 504 struct am7990_softc *sc; 505 int boff, len; 506 { 507 struct le_softc *lesc = (struct le_softc *)sc; 508 509 #if 0 /* XXX !! */ 510 bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff, 511 0x00, len); 512 #else 513 for (; len != 0; boff++, len--) 514 bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00); 515 #endif 516 } 517
Indexes created Tue Sep 30 20:09:53 GMT 2025