if_ai.c revision 1.26.16.1
1 /* $NetBSD: if_ai.c,v 1.26.16.1 2008/06/02 13:23:31 mjf 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: if_ai.c,v 1.26.16.1 2008/06/02 13:23:31 mjf Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/mbuf.h> 38 #include <sys/errno.h> 39 #include <sys/device.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 43 #include <net/if.h> 44 #include <net/if_dl.h> 45 #include <net/if_types.h> 46 #include <net/if_media.h> 47 #include <net/if_ether.h> 48 49 #include <sys/cpu.h> 50 #include <sys/bus.h> 51 #include <sys/intr.h> 52 53 #include <dev/isa/isareg.h> 54 #include <dev/isa/isavar.h> 55 56 #include <dev/ic/i82586reg.h> 57 #include <dev/ic/i82586var.h> 58 #include <dev/isa/if_aireg.h> 59 60 #ifdef AI_DEBUG 61 #define DPRINTF(x) printf x 62 #else 63 #define DPRINTF(x) 64 #endif 65 66 struct ai_softc { 67 struct ie_softc sc_ie; 68 69 bus_space_tag_t sc_regt; /* space tag for registers */ 70 bus_space_handle_t sc_regh; /* space handle for registers */ 71 72 u_int8_t card_rev; 73 u_int8_t card_type; 74 75 void *sc_ih; /* interrupt handle */ 76 }; 77 78 const char *ai_names[] = { 79 "StarLAN 10", 80 "EN100", 81 "StarLAN Fiber", 82 }; 83 84 /* Functions required by the i82586 MI driver */ 85 static void ai_reset(struct ie_softc *, int); 86 static void ai_atten(struct ie_softc *, int); 87 88 static void ai_copyin(struct ie_softc *, void *, int, size_t); 89 static void ai_copyout(struct ie_softc *, const void *, int, size_t); 90 91 static u_int16_t ai_read_16(struct ie_softc *, int); 92 static void ai_write_16(struct ie_softc *, int, u_int16_t); 93 static void ai_write_24(struct ie_softc *, int, int); 94 95 /* Local support functions */ 96 static int check_ie_present(struct ie_softc*, bus_space_tag_t, 97 bus_space_handle_t, bus_size_t); 98 static int ai_find_mem_size(struct ai_softc*, bus_space_tag_t, 99 bus_size_t); 100 101 int ai_match(struct device *, struct cfdata *, void *); 102 void ai_attach(struct device *, struct device *, void *); 103 104 /* 105 * AT&T StarLan support routines 106 */ 107 static void 108 ai_reset(sc, why) 109 struct ie_softc *sc; 110 int why; 111 { 112 struct ai_softc* asc = (struct ai_softc *) sc; 113 114 switch (why) { 115 case CHIP_PROBE: 116 /* reset to chip to see if it responds */ 117 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_RESET, 0); 118 DELAY(100); 119 break; 120 121 case CARD_RESET: 122 /* 123 * this takes around 10sec, and we can get 124 * by quite well w/out it... 125 */ 126 break; 127 } 128 } 129 130 static void 131 ai_atten(struct ie_softc *sc, int why) 132 { 133 struct ai_softc* asc = (struct ai_softc *) sc; 134 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_ATTN, 0); 135 } 136 137 static void 138 ai_copyin (sc, dst, offset, size) 139 struct ie_softc *sc; 140 void *dst; 141 int offset; 142 size_t size; 143 { 144 int dribble; 145 u_int8_t* bptr = dst; 146 147 bus_space_barrier(sc->bt, sc->bh, offset, size, 148 BUS_SPACE_BARRIER_READ); 149 150 if (offset % 2) { 151 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 152 offset++; bptr++; size--; 153 } 154 155 dribble = size % 2; 156 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 157 size >> 1); 158 159 if (dribble) { 160 bptr += size - 1; 161 offset += size - 1; 162 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 163 } 164 } 165 166 static void 167 ai_copyout (sc, src, offset, size) 168 struct ie_softc *sc; 169 const void *src; 170 int offset; 171 size_t size; 172 { 173 int dribble; 174 int osize = size; 175 int ooffset = offset; 176 const u_int8_t* bptr = src; 177 178 if (offset % 2) { 179 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 180 offset++; bptr++; size--; 181 } 182 183 dribble = size % 2; 184 bus_space_write_region_2(sc->bt, sc->bh, offset, 185 (const u_int16_t *)bptr, size >> 1); 186 if (dribble) { 187 bptr += size - 1; 188 offset += size - 1; 189 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 190 } 191 192 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 193 BUS_SPACE_BARRIER_WRITE); 194 } 195 196 static u_int16_t 197 ai_read_16 (sc, offset) 198 struct ie_softc *sc; 199 int offset; 200 { 201 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 202 return bus_space_read_2(sc->bt, sc->bh, offset); 203 } 204 205 static void 206 ai_write_16 (sc, offset, value) 207 struct ie_softc *sc; 208 int offset; 209 u_int16_t value; 210 { 211 bus_space_write_2(sc->bt, sc->bh, offset, value); 212 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 213 } 214 215 static void 216 ai_write_24 (sc, offset, addr) 217 struct ie_softc *sc; 218 int offset, addr; 219 { 220 bus_space_write_4(sc->bt, sc->bh, offset, addr + 221 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 222 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 223 } 224 225 int 226 ai_match(struct device *parent, struct cfdata *cf, void *aux) 227 { 228 int rv = 0; 229 u_int8_t val, type; 230 bus_size_t memsize; 231 bus_space_tag_t iot; 232 bus_space_handle_t ioh; 233 struct isa_attach_args * const ia = aux; 234 struct ai_softc asc; 235 236 if (ia->ia_nio < 1) 237 return (0); 238 if (ia->ia_niomem < 1) 239 return (0); 240 if (ia->ia_nirq < 1) 241 return (0); 242 243 if (ISA_DIRECT_CONFIG(ia)) 244 return (0); 245 246 /* Punt if wildcarded port, IRQ or memory address */ 247 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT || 248 ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM || 249 ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) { 250 DPRINTF(( 251 "ai_match: wildcarded IRQ, IOAddr, or memAddr, skipping\n")); 252 return (0); 253 } 254 255 iot = ia->ia_iot; 256 257 /* 258 * This probe is horribly bad, but I have no info on this card other 259 * than the former driver, and it was just as bad! 260 */ 261 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 262 AI_IOSIZE, 0, &ioh) != 0) { 263 264 DPRINTF(("ai_match: cannot map %d IO ports @ 0x%x\n", 265 AI_IOSIZE, ia->ia_iobase)); 266 return (0); 267 } 268 269 val = bus_space_read_1(iot, ioh, AI_REVISION); 270 271 type = SL_BOARD(val); 272 if (type != SL10_BOARD && type != EN100_BOARD && 273 type != SLFIBER_BOARD) { 274 DPRINTF(("ai_match: unknown board code 0x%02x @ 0x%x\n", 275 type, ia->ia_iobase)); 276 goto out; 277 } 278 279 /* 280 * Fill in just about enough of our local `ai_softc' for 281 * ai_find_mem_size() to do its job. 282 */ 283 memset(&asc, 0, sizeof asc); 284 asc.sc_regt = iot; 285 asc.sc_regh = ioh; 286 287 if ((memsize = ai_find_mem_size(&asc, ia->ia_memt, 288 ia->ia_iomem[0].ir_addr)) == 0) { 289 DPRINTF(("ai_match: cannot size memory of board @ 0x%x\n", 290 ia->ia_io[0].ir_addr)); 291 goto out; 292 } 293 294 if (ia->ia_iomem[0].ir_size != 0 && 295 ia->ia_iomem[0].ir_size != memsize) { 296 DPRINTF(( 297 "ai_match: memsize of board @ 0x%x doesn't match config\n", 298 ia->ia_iobase)); 299 goto out; 300 } 301 302 rv = 1; 303 304 ia->ia_nio = 1; 305 ia->ia_io[0].ir_size = AI_IOSIZE; 306 307 ia->ia_niomem = 1; 308 ia->ia_iomem[0].ir_size = memsize; 309 310 ia->ia_nirq = 1; 311 312 ia->ia_ndrq = 0; 313 314 DPRINTF(("ai_match: found board @ 0x%x\n", ia->ia_iobase)); 315 316 out: 317 bus_space_unmap(iot, ioh, AI_IOSIZE); 318 return rv; 319 } 320 321 void 322 ai_attach(struct device *parent, struct device *self, void *aux) 323 { 324 struct ai_softc *asc = (void *)self; 325 struct ie_softc *sc = &asc->sc_ie; 326 struct isa_attach_args *ia = aux; 327 328 u_int8_t val = 0; 329 bus_space_handle_t ioh, memh; 330 u_int8_t ethaddr[ETHER_ADDR_LEN]; 331 char name[80]; 332 333 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 334 ia->ia_io[0].ir_size, 0, &ioh) != 0) { 335 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 336 device_xname(&sc->sc_dev), 337 ia->ia_io[0].ir_addr, ia->ia_io[0].ir_addr + 338 ia->ia_io[0].ir_size - 1)); 339 return; 340 } 341 342 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 343 ia->ia_iomem[0].ir_size, 0, &memh) != 0) { 344 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 345 device_xname(&sc->sc_dev), 346 ia->ia_iomem[0].ir_addr, ia->ia_iomem[0].ir_addr + 347 ia->ia_iomem[0].ir_size - 1)); 348 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 349 return; 350 } 351 352 asc->sc_regt = ia->ia_iot; 353 asc->sc_regh = ioh; 354 355 sc->hwinit = NULL; 356 sc->intrhook = NULL; 357 sc->hwreset = ai_reset; 358 sc->chan_attn = ai_atten; 359 360 sc->ie_bus_barrier = NULL; 361 362 sc->memcopyin = ai_copyin; 363 sc->memcopyout = ai_copyout; 364 sc->ie_bus_read16 = ai_read_16; 365 sc->ie_bus_write16 = ai_write_16; 366 sc->ie_bus_write24 = ai_write_24; 367 368 sc->do_xmitnopchain = 0; 369 370 sc->sc_mediachange = NULL; 371 sc->sc_mediastatus = NULL; 372 373 sc->bt = ia->ia_memt; 374 sc->bh = memh; 375 376 /* Map i/o space. */ 377 sc->sc_msize = ia->ia_iomem[0].ir_size; 378 sc->sc_maddr = (void *)memh; 379 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 380 381 /* set up pointers to important on-card control structures */ 382 sc->iscp = 0; 383 sc->scb = IE_ISCP_SZ; 384 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 385 386 sc->buf_area = sc->scb + IE_SCB_SZ; 387 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 388 389 /* zero card memory */ 390 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 391 392 /* set card to 16-bit bus mode */ 393 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 394 IE_SYSBUS_16BIT); 395 396 /* set up pointers to key structures */ 397 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 398 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 399 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 400 401 /* flush setup of pointers, check if chip answers */ 402 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 403 BUS_SPACE_BARRIER_WRITE); 404 if (!i82586_proberam(sc)) { 405 DPRINTF(("\n%s: can't talk to i82586!\n", 406 device_xname(&sc->sc_dev))); 407 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 408 bus_space_unmap(ia->ia_memt, memh, ia->ia_iomem[0].ir_size); 409 return; 410 } 411 412 val = bus_space_read_1(asc->sc_regt, asc->sc_regh, AI_REVISION); 413 asc->card_rev = SL_REV(val); 414 asc->card_type = SL_BOARD(val) - 1; 415 snprintf(name, sizeof(name), "%s, rev. %d", 416 ai_names[asc->card_type], asc->card_rev); 417 418 i82586_attach(sc, name, ethaddr, NULL, 0, 0); 419 420 asc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 421 IST_EDGE, IPL_NET, i82586_intr, sc); 422 if (asc->sc_ih == NULL) { 423 DPRINTF(("\n%s: can't establish interrupt\n", 424 device_xname(&sc->sc_dev))); 425 } 426 } 427 428 /* 429 * Divine the memory size of this board. 430 * Better hope there's nothing important hiding just below the card... 431 */ 432 static int 433 ai_find_mem_size(asc, memt, maddr) 434 struct ai_softc* asc; 435 bus_space_tag_t memt; 436 bus_size_t maddr; 437 { 438 int size; 439 bus_space_handle_t memh; 440 struct ie_softc* sc = &asc->sc_ie; 441 442 for (size = 65536; size >= 16384; size -= 16384) { 443 if (bus_space_map(memt, maddr, size, 0, &memh) == 0) { 444 size = check_ie_present(sc, memt, maddr, size); 445 bus_space_unmap(memt, memh, size); 446 447 if (size != 0) 448 return size; 449 } 450 } 451 452 return (0); 453 } 454 455 /* 456 * Check to see if there's an 82586 out there. 457 */ 458 static int 459 check_ie_present(sc, memt, memh, size) 460 struct ie_softc* sc; 461 bus_space_tag_t memt; 462 bus_space_handle_t memh; 463 bus_size_t size; 464 { 465 sc->hwreset = ai_reset; 466 sc->chan_attn = ai_atten; 467 sc->ie_bus_read16 = ai_read_16; 468 sc->ie_bus_write16 = ai_write_16; 469 470 sc->bt = memt; 471 sc->bh = memh; 472 sc->sc_iobase = (char *)memh + size - (1 << 24); 473 474 sc->scp = size + IE_SCP_ADDR - (1 << 24); 475 bus_space_set_region_1(memt, memh, (u_long) sc->scp, 0, IE_SCP_SZ); 476 477 sc->iscp = 0; 478 bus_space_set_region_1(memt, memh, (u_long) sc->iscp, 0, IE_ISCP_SZ); 479 480 sc->scb = IE_ISCP_SZ; 481 bus_space_set_region_1(memt, memh, sc->scb, 0, IE_SCB_SZ); 482 483 /* set card to 16-bit bus mode */ 484 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 485 IE_SYSBUS_16BIT); 486 487 /* set up pointers to key structures */ 488 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 489 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 490 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 491 492 /* flush setup of pointers, check if chip answers */ 493 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 494 BUS_SPACE_BARRIER_WRITE); 495 496 if (!i82586_proberam(sc)) 497 return (0); 498 499 return (size); 500 } 501 502 CFATTACH_DECL(ai, sizeof(struct ai_softc), 503 ai_match, ai_attach, NULL, NULL); 504
Indexes created Mon Sep 29 18:09:42 GMT 2025