if_le_isa.c revision 1.10
1 /* $NetBSD: if_le_isa.c,v 1.10 1997/03/17 03:19:09 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 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 55 #ifdef INET 56 #include <netinet/in.h> 57 #include <netinet/if_inarp.h> 58 #endif 59 60 #include <vm/vm.h> 61 62 #include <machine/cpu.h> 63 #include <machine/intr.h> 64 #include <machine/bus.h> 65 66 #include <dev/isa/isareg.h> 67 #include <dev/isa/isavar.h> 68 #include <dev/isa/isadmavar.h> 69 70 #include <dev/ic/am7990reg.h> 71 #include <dev/ic/am7990var.h> 72 73 #include <dev/isa/if_levar.h> 74 75 static char *card_type[] = 76 { "unknown", "BICC Isolan", "NE2100", "DEPCA", "PCnet-ISA" }; 77 78 int le_isa_probe __P((struct device *, void *, void *)); 79 void le_isa_attach __P((struct device *, struct device *, void *)); 80 81 struct cfattach le_isa_ca = { 82 sizeof(struct le_softc), le_isa_probe, le_isa_attach 83 }; 84 85 int depca_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 86 int ne2100_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 87 int bicc_isa_probe __P((struct le_softc *, struct isa_attach_args *)); 88 int lance_isa_probe __P((struct am7990_softc *)); 89 90 int le_isa_intredge __P((void *)); 91 92 hide void le_isa_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t)); 93 hide u_int16_t le_isa_rdcsr __P((struct am7990_softc *, u_int16_t)); 94 95 void depca_copytobuf __P((struct am7990_softc *, void *, int, int)); 96 void depca_copyfrombuf __P((struct am7990_softc *, void *, int, int)); 97 void depca_zerobuf __P((struct am7990_softc *, int, int)); 98 99 hide void 100 le_isa_wrcsr(sc, port, val) 101 struct am7990_softc *sc; 102 u_int16_t port, val; 103 { 104 struct le_softc *lesc = (struct le_softc *)sc; 105 bus_space_tag_t iot = lesc->sc_iot; 106 bus_space_handle_t ioh = lesc->sc_ioh; 107 108 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 109 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 110 } 111 112 hide u_int16_t 113 le_isa_rdcsr(sc, port) 114 struct am7990_softc *sc; 115 u_int16_t port; 116 { 117 struct le_softc *lesc = (struct le_softc *)sc; 118 bus_space_tag_t iot = lesc->sc_iot; 119 bus_space_handle_t ioh = lesc->sc_ioh; 120 u_int16_t val; 121 122 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 123 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 124 return (val); 125 } 126 127 int 128 le_isa_probe(parent, match, aux) 129 struct device *parent; 130 void *match, *aux; 131 { 132 struct le_softc *lesc = match; 133 struct isa_attach_args *ia = aux; 134 135 if (bicc_isa_probe(lesc, ia)) 136 return (1); 137 if (ne2100_isa_probe(lesc, ia)) 138 return (1); 139 if (depca_isa_probe(lesc, ia)) 140 return (1); 141 142 return (0); 143 } 144 145 int 146 depca_isa_probe(lesc, ia) 147 struct le_softc *lesc; 148 struct isa_attach_args *ia; 149 { 150 struct am7990_softc *sc = &lesc->sc_am7990; 151 int iobase = ia->ia_iobase, port; 152 bus_space_tag_t iot = ia->ia_iot; 153 bus_space_handle_t ioh; 154 bus_space_handle_t memh; 155 #if 0 156 u_int32_t sum, rom_sum; 157 u_int8_t x; 158 #endif 159 int i; 160 161 /* Map i/o space. */ 162 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 163 return 0; 164 165 if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1) 166 goto bad; 167 168 /* Map card RAM. */ 169 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 170 0, &memh)) 171 goto bad; 172 173 /* Just needed to check mapability; don't need it anymore. */ 174 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 175 176 lesc->sc_iot = iot; 177 lesc->sc_ioh = ioh; 178 lesc->sc_rap = DEPCA_RAP; 179 lesc->sc_rdp = DEPCA_RDP; 180 lesc->sc_card = DEPCA; 181 182 if (lance_isa_probe(sc) == 0) 183 goto bad; 184 185 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM); 186 187 /* 188 * Extract the physical MAC address from the ROM. 189 * 190 * The address PROM is 32 bytes wide, and we access it through 191 * a single I/O port. On each read, it rotates to the next 192 * position. We find the ethernet address by looking for a 193 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 194 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 195 * ethernet address and a checksum). 196 * 197 * It appears that the PROM can be at one of two locations, so 198 * we just try both. 199 */ 200 port = DEPCA_ADP; 201 for (i = 0; i < 32; i++) 202 if (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 bus_space_read_1(iot, ioh, port) == 0xff && 207 bus_space_read_1(iot, ioh, port) == 0x00 && 208 bus_space_read_1(iot, ioh, port) == 0x55 && 209 bus_space_read_1(iot, ioh, port) == 0xaa) 210 goto found; 211 port = DEPCA_ADP + 1; 212 for (i = 0; i < 32; i++) 213 if (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 bus_space_read_1(iot, ioh, port) == 0xff && 218 bus_space_read_1(iot, ioh, port) == 0x00 && 219 bus_space_read_1(iot, ioh, port) == 0x55 && 220 bus_space_read_1(iot, ioh, port) == 0xaa) 221 goto found; 222 printf("%s: address not found\n", sc->sc_dev.dv_xname); 223 goto bad; 224 225 found: 226 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 227 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, port); 228 229 #if 0 230 sum = 231 (sc->sc_enaddr[0] << 2) + 232 (sc->sc_enaddr[1] << 10) + 233 (sc->sc_enaddr[2] << 1) + 234 (sc->sc_enaddr[3] << 9) + 235 (sc->sc_enaddr[4] << 0) + 236 (sc->sc_enaddr[5] << 8); 237 sum = (sum & 0xffff) + (sum >> 16); 238 sum = (sum & 0xffff) + (sum >> 16); 239 240 rom_sum = bus_space_read_1(iot, ioh, port); 241 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 242 243 if (sum != rom_sum) { 244 printf("%s: checksum mismatch; calculated %04x != read %04x", 245 sc->sc_dev.dv_xname, sum, rom_sum); 246 goto bad; 247 } 248 #endif 249 250 bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_NORMAL); 251 252 /* 253 * XXX INDIRECT BROKENNESS! 254 * XXX Should always unmap, and re-map in if_le_isa_attach(). 255 */ 256 257 ia->ia_iosize = 16; 258 ia->ia_drq = DRQUNK; 259 return 1; 260 261 bad: 262 bus_space_unmap(iot, ioh, 16); 263 return 0; 264 } 265 266 int 267 ne2100_isa_probe(lesc, ia) 268 struct le_softc *lesc; 269 struct isa_attach_args *ia; 270 { 271 struct am7990_softc *sc = &lesc->sc_am7990; 272 int iobase = ia->ia_iobase; 273 bus_space_tag_t iot = ia->ia_iot; 274 bus_space_handle_t ioh; 275 int i; 276 277 /* Map i/o space. */ 278 if (bus_space_map(iot, iobase, 24, 0, &ioh)) 279 return 0; 280 281 lesc->sc_iot = iot; 282 lesc->sc_ioh = ioh; 283 lesc->sc_rap = NE2100_RAP; 284 lesc->sc_rdp = NE2100_RDP; 285 lesc->sc_card = NE2100; 286 287 if (lance_isa_probe(sc) == 0) { 288 bus_space_unmap(iot, ioh, 24); 289 return 0; 290 } 291 292 /* 293 * Extract the physical MAC address from the ROM. 294 */ 295 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 296 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i); 297 298 /* 299 * XXX INDIRECT BROKENNESS! 300 * XXX Should always unmap, and re-map in if_le_isa_attach(). 301 */ 302 303 ia->ia_iosize = 24; 304 return 1; 305 } 306 307 int 308 bicc_isa_probe(lesc, ia) 309 struct le_softc *lesc; 310 struct isa_attach_args *ia; 311 { 312 struct am7990_softc *sc = &lesc->sc_am7990; 313 int iobase = ia->ia_iobase; 314 bus_space_tag_t iot = ia->ia_iot; 315 bus_space_handle_t ioh; 316 int i; 317 318 /* Map i/o space. */ 319 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 320 return 0; 321 322 lesc->sc_iot = iot; 323 lesc->sc_ioh = ioh; 324 lesc->sc_rap = BICC_RAP; 325 lesc->sc_rdp = BICC_RDP; 326 lesc->sc_card = BICC; 327 328 if (lance_isa_probe(sc) == 0) { 329 bus_space_unmap(iot, ioh, 16); 330 return 0; 331 } 332 333 /* 334 * Extract the physical MAC address from the ROM. 335 */ 336 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 337 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, i * 2); 338 339 /* 340 * XXX INDIRECT BROKENNESS! 341 * XXX Should always unmap, and re-map in if_le_isa_attach(). 342 */ 343 344 ia->ia_iosize = 16; 345 return 1; 346 } 347 348 /* 349 * Determine which chip is present on the card. 350 */ 351 int 352 lance_isa_probe(sc) 353 struct am7990_softc *sc; 354 { 355 356 /* Stop the LANCE chip and put it in a known state. */ 357 le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP); 358 delay(100); 359 360 if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP) 361 return 0; 362 363 le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3); 364 return 1; 365 } 366 367 void 368 le_isa_attach(parent, self, aux) 369 struct device *parent, *self; 370 void *aux; 371 { 372 struct le_softc *lesc = (void *)self; 373 struct am7990_softc *sc = &lesc->sc_am7990; 374 struct isa_attach_args *ia = aux; 375 bus_space_tag_t iot = ia->ia_iot; 376 bus_space_tag_t memt = ia->ia_memt; 377 bus_space_handle_t memh; 378 379 printf(": %s Ethernet\n", card_type[lesc->sc_card]); 380 381 lesc->sc_iot = iot; 382 lesc->sc_memt = memt; 383 384 /* XXX SHOULD RE-MAP I/O SPACE HERE. */ 385 386 if (lesc->sc_card == DEPCA) { 387 u_char val; 388 int i; 389 390 /* Map shared memory. */ 391 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 392 0, &memh)) 393 panic("le_isa_attach: can't map shared memory"); 394 395 lesc->sc_memh = memh; 396 397 val = 0xff; 398 for (;;) { 399 #if 0 /* XXX !! */ 400 bus_space_set_region_1(memt, memh, 0, val); 401 #else 402 for (i = 0; i < ia->ia_msize; i++) 403 bus_space_write_1(memt, memh, i, val); 404 #endif 405 for (i = 0; i < ia->ia_msize; i++) 406 if (bus_space_read_1(memt, memh, 1) != val) { 407 printf("%s: failed to clear memory\n", 408 sc->sc_dev.dv_xname); 409 return; 410 } 411 if (val == 0x00) 412 break; 413 val -= 0x55; 414 } 415 416 sc->sc_conf3 = LE_C3_ACON; 417 sc->sc_mem = 0; /* Not used. */ 418 sc->sc_addr = 0; 419 sc->sc_memsize = ia->ia_msize; 420 } else { 421 sc->sc_mem = malloc(16384, M_DEVBUF, M_NOWAIT); 422 if (sc->sc_mem == 0) { 423 printf("%s: couldn't allocate memory for card\n", 424 sc->sc_dev.dv_xname); 425 return; 426 } 427 428 sc->sc_conf3 = 0; 429 sc->sc_addr = kvtop(sc->sc_mem); /* XXX !! */ 430 sc->sc_memsize = 16384; 431 } 432 433 if (lesc->sc_card == DEPCA) { 434 sc->sc_copytodesc = depca_copytobuf; 435 sc->sc_copyfromdesc = depca_copyfrombuf; 436 sc->sc_copytobuf = depca_copytobuf; 437 sc->sc_copyfrombuf = depca_copyfrombuf; 438 sc->sc_zerobuf = depca_zerobuf; 439 } else { 440 sc->sc_copytodesc = am7990_copytobuf_contig; 441 sc->sc_copyfromdesc = am7990_copyfrombuf_contig; 442 sc->sc_copytobuf = am7990_copytobuf_contig; 443 sc->sc_copyfrombuf = am7990_copyfrombuf_contig; 444 sc->sc_zerobuf = am7990_zerobuf_contig; 445 } 446 447 sc->sc_rdcsr = le_isa_rdcsr; 448 sc->sc_wrcsr = le_isa_wrcsr; 449 sc->sc_hwinit = NULL; 450 451 printf("%s", sc->sc_dev.dv_xname); 452 am7990_config(sc); 453 454 if (ia->ia_drq != DRQUNK) 455 isa_dmacascade(ia->ia_drq); 456 457 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 458 IPL_NET, le_isa_intredge, sc); 459 } 460 461 /* 462 * Controller interrupt. 463 */ 464 int 465 le_isa_intredge(arg) 466 void *arg; 467 { 468 469 if (am7990_intr(arg) == 0) 470 return (0); 471 for (;;) 472 if (am7990_intr(arg) == 0) 473 return (1); 474 } 475 476 /* 477 * DEPCA shared memory access functions. 478 */ 479 480 void 481 depca_copytobuf(sc, from, boff, len) 482 struct am7990_softc *sc; 483 void *from; 484 int boff, len; 485 { 486 struct le_softc *lesc = (struct le_softc *)sc; 487 488 bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff, 489 from, len); 490 } 491 492 void 493 depca_copyfrombuf(sc, to, boff, len) 494 struct am7990_softc *sc; 495 void *to; 496 int boff, len; 497 { 498 struct le_softc *lesc = (struct le_softc *)sc; 499 500 bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff, 501 to, len); 502 } 503 504 void 505 depca_zerobuf(sc, boff, len) 506 struct am7990_softc *sc; 507 int boff, len; 508 { 509 struct le_softc *lesc = (struct le_softc *)sc; 510 511 #if 0 /* XXX !! */ 512 bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff, 513 0x00, len); 514 #else 515 for (; len != 0; boff++, len--) 516 bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00); 517 #endif 518 } 519
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