1 /* $NetBSD: if_ai.c,v 1.7 1999/01/08 19:22:35 augustss Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Rafal K. Boni. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/mbuf.h> 42 #include <sys/errno.h> 43 #include <sys/device.h> 44 #include <sys/protosw.h> 45 #include <sys/socket.h> 46 47 #include <net/if.h> 48 #include <net/if_dl.h> 49 #include <net/if_types.h> 50 #include <net/if_media.h> 51 #include <net/if_ether.h> 52 53 #include <vm/vm.h> 54 55 #include <machine/cpu.h> 56 #include <machine/bus.h> 57 #include <machine/intr.h> 58 59 #include <dev/isa/isareg.h> 60 #include <dev/isa/isavar.h> 61 62 #include <dev/ic/i82586reg.h> 63 #include <dev/ic/i82586var.h> 64 #include <dev/isa/if_aireg.h> 65 66 #ifdef AI_DEBUG 67 #define DPRINTF(x) printf x 68 #else 69 #define DPRINTF(x) 70 #endif 71 72 struct ai_softc { 73 struct ie_softc sc_ie; 74 75 bus_space_tag_t sc_regt; /* space tag for registers */ 76 bus_space_handle_t sc_regh; /* space handle for registers */ 77 78 u_int8_t card_rev; 79 u_int8_t card_type; 80 81 void *sc_ih; /* interrupt handle */ 82 }; 83 84 const char *ai_names[] = { 85 "StarLAN 10", 86 "EN100", 87 "StarLAN Fiber", 88 }; 89 90 /* Functions required by the i82586 MI driver */ 91 static void ai_reset __P((struct ie_softc *, int)); 92 static void ai_atten __P((struct ie_softc *)); 93 94 static void ai_copyin __P((struct ie_softc *, void *, int, size_t)); 95 static void ai_copyout __P((struct ie_softc *, const void *, int, size_t)); 96 97 static u_int16_t ai_read_16 __P((struct ie_softc *, int)); 98 static void ai_write_16 __P((struct ie_softc *, int, u_int16_t)); 99 static void ai_write_24 __P((struct ie_softc *, int, int)); 100 101 /* Local support functions */ 102 static int check_ie_present __P((struct ie_softc*, bus_space_tag_t, 103 bus_space_handle_t, bus_size_t)); 104 static int ai_find_mem_size __P((struct ai_softc*, bus_space_tag_t, 105 bus_size_t)); 106 107 int ai_match __P((struct device *, struct cfdata *, void *)); 108 void ai_attach __P((struct device *, struct device *, void *)); 109 110 /* 111 * AT&T StarLan support routines 112 */ 113 static void 114 ai_reset(sc, why) 115 struct ie_softc *sc; 116 int why; 117 { 118 struct ai_softc* asc = (struct ai_softc *) sc; 119 120 switch (why) { 121 case CHIP_PROBE: 122 /* reset to chip to see if it responds */ 123 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_RESET, 0); 124 DELAY(100); 125 break; 126 127 case CARD_RESET: 128 /* 129 * this takes around 10sec, and we can get 130 * by quite well w/out it... 131 */ 132 break; 133 } 134 } 135 136 static void 137 ai_atten(sc) 138 struct ie_softc *sc; 139 { 140 struct ai_softc* asc = (struct ai_softc *) sc; 141 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_ATTN, 0); 142 } 143 144 static void 145 ai_copyin (sc, dst, offset, size) 146 struct ie_softc *sc; 147 void *dst; 148 int offset; 149 size_t size; 150 { 151 int dribble; 152 u_int8_t* bptr = dst; 153 154 bus_space_barrier(sc->bt, sc->bh, offset, size, 155 BUS_SPACE_BARRIER_READ); 156 157 if (offset % 2) { 158 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 159 offset++; bptr++; size--; 160 } 161 162 dribble = size % 2; 163 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 164 size >> 1); 165 166 if (dribble) { 167 bptr += size - 1; 168 offset += size - 1; 169 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 170 } 171 } 172 173 static void 174 ai_copyout (sc, src, offset, size) 175 struct ie_softc *sc; 176 const void *src; 177 int offset; 178 size_t size; 179 { 180 int dribble; 181 int osize = size; 182 int ooffset = offset; 183 const u_int8_t* bptr = src; 184 185 if (offset % 2) { 186 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 187 offset++; bptr++; size--; 188 } 189 190 dribble = size % 2; 191 bus_space_write_region_2(sc->bt, sc->bh, offset, (u_int16_t *)bptr, 192 size >> 1); 193 if (dribble) { 194 bptr += size - 1; 195 offset += size - 1; 196 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 197 } 198 199 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 200 BUS_SPACE_BARRIER_WRITE); 201 } 202 203 static u_int16_t 204 ai_read_16 (sc, offset) 205 struct ie_softc *sc; 206 int offset; 207 { 208 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 209 return bus_space_read_2(sc->bt, sc->bh, offset); 210 } 211 212 static void 213 ai_write_16 (sc, offset, value) 214 struct ie_softc *sc; 215 int offset; 216 u_int16_t value; 217 { 218 bus_space_write_2(sc->bt, sc->bh, offset, value); 219 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 220 } 221 222 static void 223 ai_write_24 (sc, offset, addr) 224 struct ie_softc *sc; 225 int offset, addr; 226 { 227 bus_space_write_4(sc->bt, sc->bh, offset, addr + 228 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 229 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 230 } 231 232 int 233 ai_match(parent, cf, aux) 234 struct device *parent; 235 struct cfdata *cf; 236 void *aux; 237 { 238 int rv = 0; 239 u_int8_t val, type; 240 bus_size_t memsize; 241 bus_space_tag_t iot; 242 bus_space_handle_t ioh; 243 struct isa_attach_args * const ia = aux; 244 struct ai_softc asc; 245 246 247 /* Punt if wildcarded port, IRQ or memory address */ 248 if (ia->ia_irq == ISACF_IRQ_DEFAULT || 249 ia->ia_maddr == ISACF_IOMEM_DEFAULT || 250 ia->ia_iobase == ISACF_PORT_DEFAULT) { 251 DPRINTF(( 252 "ai_match: wildcarded IRQ, IOAddr, or memAddr, skipping\n")); 253 return (0); 254 } 255 256 iot = ia->ia_iot; 257 258 /* 259 * This probe is horribly bad, but I have no info on this card other 260 * than the former driver, and it was just as bad! 261 */ 262 if (bus_space_map(iot, ia->ia_iobase, 263 AI_IOSIZE, 0, &ioh) != 0) { 264 265 DPRINTF(("ai_match: cannot map %d IO ports @ 0x%x\n", 266 AI_IOSIZE, ia->ia_iobase)); 267 return (0); 268 } 269 270 val = bus_space_read_1(iot, ioh, AI_REVISION); 271 272 type = SL_BOARD(val); 273 if (type != SL10_BOARD && type != EN100_BOARD && 274 type != SLFIBER_BOARD) { 275 DPRINTF(("ai_match: unknown board code 0x%02x @ 0x%x\n", 276 type, ia->ia_iobase)); 277 goto out; 278 } 279 280 /* 281 * Fill in just about enough of our local `ai_softc' for 282 * ai_find_mem_size() to do its job. 283 */ 284 bzero(&asc, sizeof asc); 285 asc.sc_regt = iot; 286 asc.sc_regh = ioh; 287 288 if ((memsize = ai_find_mem_size(&asc,ia->ia_memt,ia->ia_maddr)) == 0) { 289 DPRINTF(("ai_match: cannot size memory of board @ 0x%x\n", 290 ia->ia_iobase)); 291 goto out; 292 } 293 294 if (!ia->ia_msize) 295 ia->ia_msize = memsize; 296 else if (ia->ia_msize != memsize) { 297 DPRINTF(( 298 "ai_match: memsize of board @ 0x%x doesn't match config\n", 299 ia->ia_iobase)); 300 goto out; 301 } 302 303 rv = 1; 304 ia->ia_msize = memsize; 305 ia->ia_iosize = AI_IOSIZE; 306 DPRINTF(("ai_match: found board @ 0x%x\n", ia->ia_iobase)); 307 308 out: 309 bus_space_unmap(iot, ioh, AI_IOSIZE); 310 return rv; 311 } 312 313 void 314 ai_attach(parent, self, aux) 315 struct device *parent; 316 struct device *self; 317 void *aux; 318 { 319 struct ai_softc *asc = (void *)self; 320 struct ie_softc *sc = &asc->sc_ie; 321 struct isa_attach_args *ia = aux; 322 323 u_int8_t val = 0; 324 bus_space_handle_t ioh, memh; 325 u_int8_t ethaddr[ETHER_ADDR_LEN]; 326 char name[80]; 327 328 if (bus_space_map(ia->ia_iot, ia->ia_iobase, 329 ia->ia_iosize, 0, &ioh) != 0) { 330 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 331 sc->sc_dev.dv_xname, 332 ia->ia_iobase, ia->ia_iobase + ia->ia_iosize - 1)); 333 return; 334 } 335 336 if (bus_space_map(ia->ia_memt, ia->ia_maddr, 337 ia->ia_msize, 0, &memh) != 0) { 338 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 339 sc->sc_dev.dv_xname, 340 ia->ia_maddr, ia->ia_maddr + ia->ia_msize - 1)); 341 bus_space_unmap(ia->ia_iot, ioh, ia->ia_iosize); 342 return; 343 } 344 345 asc->sc_regt = ia->ia_iot; 346 asc->sc_regh = ioh; 347 348 sc->hwinit = NULL; 349 sc->intrhook = NULL; 350 sc->hwreset = ai_reset; 351 sc->chan_attn = ai_atten; 352 353 sc->memcopyin = ai_copyin; 354 sc->memcopyout = ai_copyout; 355 sc->ie_bus_read16 = ai_read_16; 356 sc->ie_bus_write16 = ai_write_16; 357 sc->ie_bus_write24 = ai_write_24; 358 359 sc->do_xmitnopchain = 0; 360 361 sc->sc_mediachange = NULL; 362 sc->sc_mediastatus = NULL; 363 364 sc->bt = ia->ia_memt; 365 sc->bh = memh; 366 367 /* Map i/o space. */ 368 sc->sc_msize = ia->ia_msize; 369 sc->sc_maddr = (void *)memh; 370 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 371 372 /* set up pointers to important on-card control structures */ 373 sc->iscp = 0; 374 sc->scb = IE_ISCP_SZ; 375 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 376 377 sc->buf_area = sc->scb + IE_SCB_SZ; 378 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 379 380 /* zero card memory */ 381 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 382 383 /* set card to 16-bit bus mode */ 384 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 0); 385 386 /* set up pointers to key structures */ 387 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 388 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 389 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 390 391 /* flush setup of pointers, check if chip answers */ 392 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 393 BUS_SPACE_BARRIER_WRITE); 394 if (!i82586_proberam(sc)) { 395 DPRINTF(("\n%s: can't talk to i82586!\n", 396 sc->sc_dev.dv_xname)); 397 bus_space_unmap(ia->ia_iot, ioh, ia->ia_iosize); 398 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 399 return; 400 } 401 402 val = bus_space_read_1(asc->sc_regt, asc->sc_regh, AI_REVISION); 403 asc->card_rev = SL_REV(val); 404 asc->card_type = SL_BOARD(val) - 1; 405 sprintf(name, "%s, rev. %d", 406 ai_names[asc->card_type], asc->card_rev); 407 408 i82586_attach(sc, name, ethaddr, NULL, 0, 0); 409 410 asc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 411 IPL_NET, i82586_intr, sc); 412 if (asc->sc_ih == NULL) { 413 DPRINTF(("\n%s: can't establish interrupt\n", 414 sc->sc_dev.dv_xname)); 415 } 416 } 417 418 /* 419 * Divine the memory size of this board. 420 * Better hope there's nothing important hiding just below the card... 421 */ 422 static int 423 ai_find_mem_size(asc, memt, maddr) 424 struct ai_softc* asc; 425 bus_space_tag_t memt; 426 bus_size_t maddr; 427 { 428 int size; 429 bus_space_handle_t memh; 430 struct ie_softc* sc = &asc->sc_ie; 431 432 for (size = 65536; size >= 16384; size -= 16384) { 433 if (bus_space_map(memt, maddr, size, 0, &memh) == 0) { 434 size = check_ie_present(sc, memt, maddr, size); 435 bus_space_unmap(memt, memh, size); 436 437 if (size != 0) 438 return size; 439 } 440 } 441 442 return (0); 443 } 444 445 /* 446 * Check to see if there's an 82586 out there. 447 */ 448 static int 449 check_ie_present(sc, memt, memh, size) 450 struct ie_softc* sc; 451 bus_space_tag_t memt; 452 bus_space_handle_t memh; 453 bus_size_t size; 454 { 455 sc->hwreset = ai_reset; 456 sc->chan_attn = ai_atten; 457 sc->ie_bus_read16 = ai_read_16; 458 sc->ie_bus_write16 = ai_write_16; 459 460 sc->bt = memt; 461 sc->bh = memh; 462 sc->sc_iobase = (char *)memh + size - (1 << 24); 463 464 sc->scp = size + IE_SCP_ADDR - (1 << 24); 465 bus_space_set_region_1(memt, memh, (u_long) sc->scp, 0, IE_SCP_SZ); 466 467 sc->iscp = 0; 468 bus_space_set_region_1(memt, memh, (u_long) sc->iscp, 0, IE_ISCP_SZ); 469 470 sc->scb = IE_ISCP_SZ; 471 bus_space_set_region_1(memt, memh, sc->scb, 0, IE_SCB_SZ); 472 473 /* set card to 16-bit bus mode */ 474 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 0); 475 476 /* set up pointers to key structures */ 477 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 478 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 479 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 480 481 /* flush setup of pointers, check if chip answers */ 482 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 483 BUS_SPACE_BARRIER_WRITE); 484 485 if (!i82586_proberam(sc)) 486 return (0); 487 488 return (size); 489 } 490 491 struct cfattach ai_ca = { 492 sizeof(struct ai_softc), ai_match, ai_attach 493 }; 494