if_ai.c revision 1.14
1/* $NetBSD: if_ai.c,v 1.14 2002/01/07 21:47:05 thorpej 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/cdefs.h> 40__KERNEL_RCSID(0, "$NetBSD: if_ai.c,v 1.14 2002/01/07 21:47:05 thorpej Exp $"); 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/mbuf.h> 45#include <sys/errno.h> 46#include <sys/device.h> 47#include <sys/protosw.h> 48#include <sys/socket.h> 49 50#include <net/if.h> 51#include <net/if_dl.h> 52#include <net/if_types.h> 53#include <net/if_media.h> 54#include <net/if_ether.h> 55 56#include <machine/cpu.h> 57#include <machine/bus.h> 58#include <machine/intr.h> 59 60#include <dev/isa/isareg.h> 61#include <dev/isa/isavar.h> 62 63#include <dev/ic/i82586reg.h> 64#include <dev/ic/i82586var.h> 65#include <dev/isa/if_aireg.h> 66 67#ifdef AI_DEBUG 68#define DPRINTF(x) printf x 69#else 70#define DPRINTF(x) 71#endif 72 73struct ai_softc { 74 struct ie_softc sc_ie; 75 76 bus_space_tag_t sc_regt; /* space tag for registers */ 77 bus_space_handle_t sc_regh; /* space handle for registers */ 78 79 u_int8_t card_rev; 80 u_int8_t card_type; 81 82 void *sc_ih; /* interrupt handle */ 83}; 84 85const char *ai_names[] = { 86 "StarLAN 10", 87 "EN100", 88 "StarLAN Fiber", 89}; 90 91/* Functions required by the i82586 MI driver */ 92static void ai_reset __P((struct ie_softc *, int)); 93static void ai_atten __P((struct ie_softc *, int)); 94 95static void ai_copyin __P((struct ie_softc *, void *, int, size_t)); 96static void ai_copyout __P((struct ie_softc *, const void *, int, size_t)); 97 98static u_int16_t ai_read_16 __P((struct ie_softc *, int)); 99static void ai_write_16 __P((struct ie_softc *, int, u_int16_t)); 100static void ai_write_24 __P((struct ie_softc *, int, int)); 101 102/* Local support functions */ 103static int check_ie_present __P((struct ie_softc*, bus_space_tag_t, 104 bus_space_handle_t, bus_size_t)); 105static int ai_find_mem_size __P((struct ai_softc*, bus_space_tag_t, 106 bus_size_t)); 107 108int ai_match __P((struct device *, struct cfdata *, void *)); 109void ai_attach __P((struct device *, struct device *, void *)); 110 111/* 112 * AT&T StarLan support routines 113 */ 114static void 115ai_reset(sc, why) 116 struct ie_softc *sc; 117 int why; 118{ 119 struct ai_softc* asc = (struct ai_softc *) sc; 120 121 switch (why) { 122 case CHIP_PROBE: 123 /* reset to chip to see if it responds */ 124 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_RESET, 0); 125 DELAY(100); 126 break; 127 128 case CARD_RESET: 129 /* 130 * this takes around 10sec, and we can get 131 * by quite well w/out it... 132 */ 133 break; 134 } 135} 136 137static void 138ai_atten(sc, why) 139 struct ie_softc *sc; 140 int why; 141{ 142 struct ai_softc* asc = (struct ai_softc *) sc; 143 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_ATTN, 0); 144} 145 146static void 147ai_copyin (sc, dst, offset, size) 148 struct ie_softc *sc; 149 void *dst; 150 int offset; 151 size_t size; 152{ 153 int dribble; 154 u_int8_t* bptr = dst; 155 156 bus_space_barrier(sc->bt, sc->bh, offset, size, 157 BUS_SPACE_BARRIER_READ); 158 159 if (offset % 2) { 160 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 161 offset++; bptr++; size--; 162 } 163 164 dribble = size % 2; 165 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 166 size >> 1); 167 168 if (dribble) { 169 bptr += size - 1; 170 offset += size - 1; 171 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 172 } 173} 174 175static void 176ai_copyout (sc, src, offset, size) 177 struct ie_softc *sc; 178 const void *src; 179 int offset; 180 size_t size; 181{ 182 int dribble; 183 int osize = size; 184 int ooffset = offset; 185 const u_int8_t* bptr = src; 186 187 if (offset % 2) { 188 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 189 offset++; bptr++; size--; 190 } 191 192 dribble = size % 2; 193 bus_space_write_region_2(sc->bt, sc->bh, offset, (u_int16_t *)bptr, 194 size >> 1); 195 if (dribble) { 196 bptr += size - 1; 197 offset += size - 1; 198 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 199 } 200 201 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 202 BUS_SPACE_BARRIER_WRITE); 203} 204 205static u_int16_t 206ai_read_16 (sc, offset) 207 struct ie_softc *sc; 208 int offset; 209{ 210 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 211 return bus_space_read_2(sc->bt, sc->bh, offset); 212} 213 214static void 215ai_write_16 (sc, offset, value) 216 struct ie_softc *sc; 217 int offset; 218 u_int16_t value; 219{ 220 bus_space_write_2(sc->bt, sc->bh, offset, value); 221 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 222} 223 224static void 225ai_write_24 (sc, offset, addr) 226 struct ie_softc *sc; 227 int offset, addr; 228{ 229 bus_space_write_4(sc->bt, sc->bh, offset, addr + 230 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 231 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 232} 233 234int 235ai_match(parent, cf, aux) 236 struct device *parent; 237 struct cfdata *cf; 238 void *aux; 239{ 240 int rv = 0; 241 u_int8_t val, type; 242 bus_size_t memsize; 243 bus_space_tag_t iot; 244 bus_space_handle_t ioh; 245 struct isa_attach_args * const ia = aux; 246 struct ai_softc asc; 247 248 if (ia->ia_nio < 1) 249 return (0); 250 if (ia->ia_niomem < 1) 251 return (0); 252 if (ia->ia_nirq < 1) 253 return (0); 254 255 if (ISA_DIRECT_CONFIG(ia)) 256 return (0); 257 258 /* Punt if wildcarded port, IRQ or memory address */ 259 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT || 260 ia->ia_iomem[0].ir_addr == ISACF_IRQ_DEFAULT || 261 ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) { 262 DPRINTF(( 263 "ai_match: wildcarded IRQ, IOAddr, or memAddr, skipping\n")); 264 return (0); 265 } 266 267 iot = ia->ia_iot; 268 269 /* 270 * This probe is horribly bad, but I have no info on this card other 271 * than the former driver, and it was just as bad! 272 */ 273 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 274 AI_IOSIZE, 0, &ioh) != 0) { 275 276 DPRINTF(("ai_match: cannot map %d IO ports @ 0x%x\n", 277 AI_IOSIZE, ia->ia_iobase)); 278 return (0); 279 } 280 281 val = bus_space_read_1(iot, ioh, AI_REVISION); 282 283 type = SL_BOARD(val); 284 if (type != SL10_BOARD && type != EN100_BOARD && 285 type != SLFIBER_BOARD) { 286 DPRINTF(("ai_match: unknown board code 0x%02x @ 0x%x\n", 287 type, ia->ia_iobase)); 288 goto out; 289 } 290 291 /* 292 * Fill in just about enough of our local `ai_softc' for 293 * ai_find_mem_size() to do its job. 294 */ 295 memset(&asc, 0, sizeof asc); 296 asc.sc_regt = iot; 297 asc.sc_regh = ioh; 298 299 if ((memsize = ai_find_mem_size(&asc, ia->ia_memt, 300 ia->ia_iomem[0].ir_addr)) == 0) { 301 DPRINTF(("ai_match: cannot size memory of board @ 0x%x\n", 302 ia->ia_io[0].ir_addr)); 303 goto out; 304 } 305 306 if (ia->ia_iomem[0].ir_size != 0 && 307 ia->ia_iomem[0].ir_size != memsize) { 308 DPRINTF(( 309 "ai_match: memsize of board @ 0x%x doesn't match config\n", 310 ia->ia_iobase)); 311 goto out; 312 } 313 314 rv = 1; 315 316 ia->ia_nio = 1; 317 ia->ia_io[0].ir_size = AI_IOSIZE; 318 319 ia->ia_niomem = 1; 320 ia->ia_iomem[0].ir_size = memsize; 321 322 ia->ia_nirq = 1; 323 324 ia->ia_ndrq = 0; 325 326 DPRINTF(("ai_match: found board @ 0x%x\n", ia->ia_iobase)); 327 328out: 329 bus_space_unmap(iot, ioh, AI_IOSIZE); 330 return rv; 331} 332 333void 334ai_attach(parent, self, aux) 335 struct device *parent; 336 struct device *self; 337 void *aux; 338{ 339 struct ai_softc *asc = (void *)self; 340 struct ie_softc *sc = &asc->sc_ie; 341 struct isa_attach_args *ia = aux; 342 343 u_int8_t val = 0; 344 bus_space_handle_t ioh, memh; 345 u_int8_t ethaddr[ETHER_ADDR_LEN]; 346 char name[80]; 347 348 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 349 ia->ia_io[0].ir_size, 0, &ioh) != 0) { 350 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 351 sc->sc_dev.dv_xname, 352 ia->ia_io[0].ir_addr, ia->ia_io[0].ir_addr + 353 ia->ia_io[0].ir_size - 1)); 354 return; 355 } 356 357 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 358 ia->ia_iomem[0].ir_size, 0, &memh) != 0) { 359 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 360 sc->sc_dev.dv_xname, 361 ia->ia_iomem[0].ir_addr, ia->ia_iomem[0].ir_addr + 362 ia->ia_iomem[0].ir_size - 1)); 363 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 364 return; 365 } 366 367 asc->sc_regt = ia->ia_iot; 368 asc->sc_regh = ioh; 369 370 sc->hwinit = NULL; 371 sc->intrhook = NULL; 372 sc->hwreset = ai_reset; 373 sc->chan_attn = ai_atten; 374 375 sc->ie_bus_barrier = NULL; 376 377 sc->memcopyin = ai_copyin; 378 sc->memcopyout = ai_copyout; 379 sc->ie_bus_read16 = ai_read_16; 380 sc->ie_bus_write16 = ai_write_16; 381 sc->ie_bus_write24 = ai_write_24; 382 383 sc->do_xmitnopchain = 0; 384 385 sc->sc_mediachange = NULL; 386 sc->sc_mediastatus = NULL; 387 388 sc->bt = ia->ia_memt; 389 sc->bh = memh; 390 391 /* Map i/o space. */ 392 sc->sc_msize = ia->ia_iomem[0].ir_size; 393 sc->sc_maddr = (void *)memh; 394 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 395 396 /* set up pointers to important on-card control structures */ 397 sc->iscp = 0; 398 sc->scb = IE_ISCP_SZ; 399 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 400 401 sc->buf_area = sc->scb + IE_SCB_SZ; 402 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 403 404 /* zero card memory */ 405 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 406 407 /* set card to 16-bit bus mode */ 408 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 409 IE_SYSBUS_16BIT); 410 411 /* set up pointers to key structures */ 412 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 413 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 414 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 415 416 /* flush setup of pointers, check if chip answers */ 417 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 418 BUS_SPACE_BARRIER_WRITE); 419 if (!i82586_proberam(sc)) { 420 DPRINTF(("\n%s: can't talk to i82586!\n", 421 sc->sc_dev.dv_xname)); 422 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 423 bus_space_unmap(ia->ia_memt, memh, ia->ia_iomem[0].ir_size); 424 return; 425 } 426 427 val = bus_space_read_1(asc->sc_regt, asc->sc_regh, AI_REVISION); 428 asc->card_rev = SL_REV(val); 429 asc->card_type = SL_BOARD(val) - 1; 430 sprintf(name, "%s, rev. %d", 431 ai_names[asc->card_type], asc->card_rev); 432 433 i82586_attach(sc, name, ethaddr, NULL, 0, 0); 434 435 asc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 436 IST_EDGE, IPL_NET, i82586_intr, sc); 437 if (asc->sc_ih == NULL) { 438 DPRINTF(("\n%s: can't establish interrupt\n", 439 sc->sc_dev.dv_xname)); 440 } 441} 442 443/* 444 * Divine the memory size of this board. 445 * Better hope there's nothing important hiding just below the card... 446 */ 447static int 448ai_find_mem_size(asc, memt, maddr) 449 struct ai_softc* asc; 450 bus_space_tag_t memt; 451 bus_size_t maddr; 452{ 453 int size; 454 bus_space_handle_t memh; 455 struct ie_softc* sc = &asc->sc_ie; 456 457 for (size = 65536; size >= 16384; size -= 16384) { 458 if (bus_space_map(memt, maddr, size, 0, &memh) == 0) { 459 size = check_ie_present(sc, memt, maddr, size); 460 bus_space_unmap(memt, memh, size); 461 462 if (size != 0) 463 return size; 464 } 465 } 466 467 return (0); 468} 469 470/* 471 * Check to see if there's an 82586 out there. 472 */ 473static int 474check_ie_present(sc, memt, memh, size) 475 struct ie_softc* sc; 476 bus_space_tag_t memt; 477 bus_space_handle_t memh; 478 bus_size_t size; 479{ 480 sc->hwreset = ai_reset; 481 sc->chan_attn = ai_atten; 482 sc->ie_bus_read16 = ai_read_16; 483 sc->ie_bus_write16 = ai_write_16; 484 485 sc->bt = memt; 486 sc->bh = memh; 487 sc->sc_iobase = (char *)memh + size - (1 << 24); 488 489 sc->scp = size + IE_SCP_ADDR - (1 << 24); 490 bus_space_set_region_1(memt, memh, (u_long) sc->scp, 0, IE_SCP_SZ); 491 492 sc->iscp = 0; 493 bus_space_set_region_1(memt, memh, (u_long) sc->iscp, 0, IE_ISCP_SZ); 494 495 sc->scb = IE_ISCP_SZ; 496 bus_space_set_region_1(memt, memh, sc->scb, 0, IE_SCB_SZ); 497 498 /* set card to 16-bit bus mode */ 499 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 500 IE_SYSBUS_16BIT); 501 502 /* set up pointers to key structures */ 503 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 504 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 505 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 506 507 /* flush setup of pointers, check if chip answers */ 508 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 509 BUS_SPACE_BARRIER_WRITE); 510 511 if (!i82586_proberam(sc)) 512 return (0); 513 514 return (size); 515} 516 517struct cfattach ai_ca = { 518 sizeof(struct ai_softc), ai_match, ai_attach 519}; 520