if_ai.c revision 1.9
1/* $NetBSD: if_ai.c,v 1.9 2001/01/22 22:28:46 bjh21 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 <machine/cpu.h> 54#include <machine/bus.h> 55#include <machine/intr.h> 56 57#include <dev/isa/isareg.h> 58#include <dev/isa/isavar.h> 59 60#include <dev/ic/i82586reg.h> 61#include <dev/ic/i82586var.h> 62#include <dev/isa/if_aireg.h> 63 64#ifdef AI_DEBUG 65#define DPRINTF(x) printf x 66#else 67#define DPRINTF(x) 68#endif 69 70struct ai_softc { 71 struct ie_softc sc_ie; 72 73 bus_space_tag_t sc_regt; /* space tag for registers */ 74 bus_space_handle_t sc_regh; /* space handle for registers */ 75 76 u_int8_t card_rev; 77 u_int8_t card_type; 78 79 void *sc_ih; /* interrupt handle */ 80}; 81 82const char *ai_names[] = { 83 "StarLAN 10", 84 "EN100", 85 "StarLAN Fiber", 86}; 87 88/* Functions required by the i82586 MI driver */ 89static void ai_reset __P((struct ie_softc *, int)); 90static void ai_atten __P((struct ie_softc *)); 91 92static void ai_copyin __P((struct ie_softc *, void *, int, size_t)); 93static void ai_copyout __P((struct ie_softc *, const void *, int, size_t)); 94 95static u_int16_t ai_read_16 __P((struct ie_softc *, int)); 96static void ai_write_16 __P((struct ie_softc *, int, u_int16_t)); 97static void ai_write_24 __P((struct ie_softc *, int, int)); 98 99/* Local support functions */ 100static int check_ie_present __P((struct ie_softc*, bus_space_tag_t, 101 bus_space_handle_t, bus_size_t)); 102static int ai_find_mem_size __P((struct ai_softc*, bus_space_tag_t, 103 bus_size_t)); 104 105int ai_match __P((struct device *, struct cfdata *, void *)); 106void ai_attach __P((struct device *, struct device *, void *)); 107 108/* 109 * AT&T StarLan support routines 110 */ 111static void 112ai_reset(sc, why) 113 struct ie_softc *sc; 114 int why; 115{ 116 struct ai_softc* asc = (struct ai_softc *) sc; 117 118 switch (why) { 119 case CHIP_PROBE: 120 /* reset to chip to see if it responds */ 121 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_RESET, 0); 122 DELAY(100); 123 break; 124 125 case CARD_RESET: 126 /* 127 * this takes around 10sec, and we can get 128 * by quite well w/out it... 129 */ 130 break; 131 } 132} 133 134static void 135ai_atten(sc) 136 struct ie_softc *sc; 137{ 138 struct ai_softc* asc = (struct ai_softc *) sc; 139 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_ATTN, 0); 140} 141 142static void 143ai_copyin (sc, dst, offset, size) 144 struct ie_softc *sc; 145 void *dst; 146 int offset; 147 size_t size; 148{ 149 int dribble; 150 u_int8_t* bptr = dst; 151 152 bus_space_barrier(sc->bt, sc->bh, offset, size, 153 BUS_SPACE_BARRIER_READ); 154 155 if (offset % 2) { 156 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 157 offset++; bptr++; size--; 158 } 159 160 dribble = size % 2; 161 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 162 size >> 1); 163 164 if (dribble) { 165 bptr += size - 1; 166 offset += size - 1; 167 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 168 } 169} 170 171static void 172ai_copyout (sc, src, offset, size) 173 struct ie_softc *sc; 174 const void *src; 175 int offset; 176 size_t size; 177{ 178 int dribble; 179 int osize = size; 180 int ooffset = offset; 181 const u_int8_t* bptr = src; 182 183 if (offset % 2) { 184 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 185 offset++; bptr++; size--; 186 } 187 188 dribble = size % 2; 189 bus_space_write_region_2(sc->bt, sc->bh, offset, (u_int16_t *)bptr, 190 size >> 1); 191 if (dribble) { 192 bptr += size - 1; 193 offset += size - 1; 194 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 195 } 196 197 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 198 BUS_SPACE_BARRIER_WRITE); 199} 200 201static u_int16_t 202ai_read_16 (sc, offset) 203 struct ie_softc *sc; 204 int offset; 205{ 206 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 207 return bus_space_read_2(sc->bt, sc->bh, offset); 208} 209 210static void 211ai_write_16 (sc, offset, value) 212 struct ie_softc *sc; 213 int offset; 214 u_int16_t value; 215{ 216 bus_space_write_2(sc->bt, sc->bh, offset, value); 217 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 218} 219 220static void 221ai_write_24 (sc, offset, addr) 222 struct ie_softc *sc; 223 int offset, addr; 224{ 225 bus_space_write_4(sc->bt, sc->bh, offset, addr + 226 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 227 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 228} 229 230int 231ai_match(parent, cf, aux) 232 struct device *parent; 233 struct cfdata *cf; 234 void *aux; 235{ 236 int rv = 0; 237 u_int8_t val, type; 238 bus_size_t memsize; 239 bus_space_tag_t iot; 240 bus_space_handle_t ioh; 241 struct isa_attach_args * const ia = aux; 242 struct ai_softc asc; 243 244 245 /* Punt if wildcarded port, IRQ or memory address */ 246 if (ia->ia_irq == ISACF_IRQ_DEFAULT || 247 ia->ia_maddr == ISACF_IOMEM_DEFAULT || 248 ia->ia_iobase == ISACF_PORT_DEFAULT) { 249 DPRINTF(( 250 "ai_match: wildcarded IRQ, IOAddr, or memAddr, skipping\n")); 251 return (0); 252 } 253 254 iot = ia->ia_iot; 255 256 /* 257 * This probe is horribly bad, but I have no info on this card other 258 * than the former driver, and it was just as bad! 259 */ 260 if (bus_space_map(iot, ia->ia_iobase, 261 AI_IOSIZE, 0, &ioh) != 0) { 262 263 DPRINTF(("ai_match: cannot map %d IO ports @ 0x%x\n", 264 AI_IOSIZE, ia->ia_iobase)); 265 return (0); 266 } 267 268 val = bus_space_read_1(iot, ioh, AI_REVISION); 269 270 type = SL_BOARD(val); 271 if (type != SL10_BOARD && type != EN100_BOARD && 272 type != SLFIBER_BOARD) { 273 DPRINTF(("ai_match: unknown board code 0x%02x @ 0x%x\n", 274 type, ia->ia_iobase)); 275 goto out; 276 } 277 278 /* 279 * Fill in just about enough of our local `ai_softc' for 280 * ai_find_mem_size() to do its job. 281 */ 282 bzero(&asc, sizeof asc); 283 asc.sc_regt = iot; 284 asc.sc_regh = ioh; 285 286 if ((memsize = ai_find_mem_size(&asc,ia->ia_memt,ia->ia_maddr)) == 0) { 287 DPRINTF(("ai_match: cannot size memory of board @ 0x%x\n", 288 ia->ia_iobase)); 289 goto out; 290 } 291 292 if (!ia->ia_msize) 293 ia->ia_msize = memsize; 294 else if (ia->ia_msize != memsize) { 295 DPRINTF(( 296 "ai_match: memsize of board @ 0x%x doesn't match config\n", 297 ia->ia_iobase)); 298 goto out; 299 } 300 301 rv = 1; 302 ia->ia_msize = memsize; 303 ia->ia_iosize = AI_IOSIZE; 304 DPRINTF(("ai_match: found board @ 0x%x\n", ia->ia_iobase)); 305 306out: 307 bus_space_unmap(iot, ioh, AI_IOSIZE); 308 return rv; 309} 310 311void 312ai_attach(parent, self, aux) 313 struct device *parent; 314 struct device *self; 315 void *aux; 316{ 317 struct ai_softc *asc = (void *)self; 318 struct ie_softc *sc = &asc->sc_ie; 319 struct isa_attach_args *ia = aux; 320 321 u_int8_t val = 0; 322 bus_space_handle_t ioh, memh; 323 u_int8_t ethaddr[ETHER_ADDR_LEN]; 324 char name[80]; 325 326 if (bus_space_map(ia->ia_iot, ia->ia_iobase, 327 ia->ia_iosize, 0, &ioh) != 0) { 328 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 329 sc->sc_dev.dv_xname, 330 ia->ia_iobase, ia->ia_iobase + ia->ia_iosize - 1)); 331 return; 332 } 333 334 if (bus_space_map(ia->ia_memt, ia->ia_maddr, 335 ia->ia_msize, 0, &memh) != 0) { 336 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 337 sc->sc_dev.dv_xname, 338 ia->ia_maddr, ia->ia_maddr + ia->ia_msize - 1)); 339 bus_space_unmap(ia->ia_iot, ioh, ia->ia_iosize); 340 return; 341 } 342 343 asc->sc_regt = ia->ia_iot; 344 asc->sc_regh = ioh; 345 346 sc->hwinit = NULL; 347 sc->intrhook = NULL; 348 sc->hwreset = ai_reset; 349 sc->chan_attn = ai_atten; 350 351 sc->ie_bus_barrier = NULL; 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 */ 422static int 423ai_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 */ 448static int 449check_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 491struct cfattach ai_ca = { 492 sizeof(struct ai_softc), ai_match, ai_attach 493}; 494