if_ai.c revision 1.30
1 /* $NetBSD: if_ai.c,v 1.30 2009/03/14 21:04:20 dsl 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 1.30 2009/03/14 21:04:20 dsl 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(struct ie_softc *sc, int why) 109 { 110 struct ai_softc* asc = (struct ai_softc *) sc; 111 112 switch (why) { 113 case CHIP_PROBE: 114 /* reset to chip to see if it responds */ 115 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_RESET, 0); 116 DELAY(100); 117 break; 118 119 case CARD_RESET: 120 /* 121 * this takes around 10sec, and we can get 122 * by quite well w/out it... 123 */ 124 break; 125 } 126 } 127 128 static void 129 ai_atten(struct ie_softc *sc, int why) 130 { 131 struct ai_softc* asc = (struct ai_softc *) sc; 132 bus_space_write_1(asc->sc_regt, asc->sc_regh, AI_ATTN, 0); 133 } 134 135 static void 136 ai_copyin (struct ie_softc *sc, void *dst, int offset, size_t size) 137 { 138 int dribble; 139 u_int8_t* bptr = dst; 140 141 bus_space_barrier(sc->bt, sc->bh, offset, size, 142 BUS_SPACE_BARRIER_READ); 143 144 if (offset % 2) { 145 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 146 offset++; bptr++; size--; 147 } 148 149 dribble = size % 2; 150 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 151 size >> 1); 152 153 if (dribble) { 154 bptr += size - 1; 155 offset += size - 1; 156 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 157 } 158 } 159 160 static void 161 ai_copyout (struct ie_softc *sc, const void *src, int offset, size_t size) 162 { 163 int dribble; 164 int osize = size; 165 int ooffset = offset; 166 const u_int8_t* bptr = src; 167 168 if (offset % 2) { 169 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 170 offset++; bptr++; size--; 171 } 172 173 dribble = size % 2; 174 bus_space_write_region_2(sc->bt, sc->bh, offset, 175 (const u_int16_t *)bptr, size >> 1); 176 if (dribble) { 177 bptr += size - 1; 178 offset += size - 1; 179 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 180 } 181 182 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 183 BUS_SPACE_BARRIER_WRITE); 184 } 185 186 static u_int16_t 187 ai_read_16 (struct ie_softc *sc, int offset) 188 { 189 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 190 return bus_space_read_2(sc->bt, sc->bh, offset); 191 } 192 193 static void 194 ai_write_16 (struct ie_softc *sc, int offset, u_int16_t value) 195 { 196 bus_space_write_2(sc->bt, sc->bh, offset, value); 197 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 198 } 199 200 static void 201 ai_write_24 (struct ie_softc *sc, int offset, int addr) 202 { 203 bus_space_write_4(sc->bt, sc->bh, offset, addr + 204 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 205 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 206 } 207 208 int 209 ai_match(struct device *parent, struct cfdata *cf, void *aux) 210 { 211 int rv = 0; 212 u_int8_t val, type; 213 bus_size_t memsize; 214 bus_space_tag_t iot; 215 bus_space_handle_t ioh; 216 struct isa_attach_args * const ia = aux; 217 struct ai_softc asc; 218 219 if (ia->ia_nio < 1) 220 return (0); 221 if (ia->ia_niomem < 1) 222 return (0); 223 if (ia->ia_nirq < 1) 224 return (0); 225 226 if (ISA_DIRECT_CONFIG(ia)) 227 return (0); 228 229 /* Punt if wildcarded port, IRQ or memory address */ 230 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT || 231 ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM || 232 ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) { 233 DPRINTF(( 234 "ai_match: wildcarded IRQ, IOAddr, or memAddr, skipping\n")); 235 return (0); 236 } 237 238 iot = ia->ia_iot; 239 240 /* 241 * This probe is horribly bad, but I have no info on this card other 242 * than the former driver, and it was just as bad! 243 */ 244 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 245 AI_IOSIZE, 0, &ioh) != 0) { 246 247 DPRINTF(("ai_match: cannot map %d IO ports @ 0x%x\n", 248 AI_IOSIZE, ia->ia_iobase)); 249 return (0); 250 } 251 252 val = bus_space_read_1(iot, ioh, AI_REVISION); 253 254 type = SL_BOARD(val); 255 if (type != SL10_BOARD && type != EN100_BOARD && 256 type != SLFIBER_BOARD) { 257 DPRINTF(("ai_match: unknown board code 0x%02x @ 0x%x\n", 258 type, ia->ia_iobase)); 259 goto out; 260 } 261 262 /* 263 * Fill in just about enough of our local `ai_softc' for 264 * ai_find_mem_size() to do its job. 265 */ 266 memset(&asc, 0, sizeof asc); 267 asc.sc_regt = iot; 268 asc.sc_regh = ioh; 269 270 if ((memsize = ai_find_mem_size(&asc, ia->ia_memt, 271 ia->ia_iomem[0].ir_addr)) == 0) { 272 DPRINTF(("ai_match: cannot size memory of board @ 0x%x\n", 273 ia->ia_io[0].ir_addr)); 274 goto out; 275 } 276 277 if (ia->ia_iomem[0].ir_size != 0 && 278 ia->ia_iomem[0].ir_size != memsize) { 279 DPRINTF(( 280 "ai_match: memsize of board @ 0x%x doesn't match config\n", 281 ia->ia_iobase)); 282 goto out; 283 } 284 285 rv = 1; 286 287 ia->ia_nio = 1; 288 ia->ia_io[0].ir_size = AI_IOSIZE; 289 290 ia->ia_niomem = 1; 291 ia->ia_iomem[0].ir_size = memsize; 292 293 ia->ia_nirq = 1; 294 295 ia->ia_ndrq = 0; 296 297 DPRINTF(("ai_match: found board @ 0x%x\n", ia->ia_iobase)); 298 299 out: 300 bus_space_unmap(iot, ioh, AI_IOSIZE); 301 return rv; 302 } 303 304 void 305 ai_attach(struct device *parent, struct device *self, void *aux) 306 { 307 struct ai_softc *asc = (void *)self; 308 struct ie_softc *sc = &asc->sc_ie; 309 struct isa_attach_args *ia = aux; 310 311 u_int8_t val = 0; 312 bus_space_handle_t ioh, memh; 313 u_int8_t ethaddr[ETHER_ADDR_LEN]; 314 char name[80]; 315 316 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 317 ia->ia_io[0].ir_size, 0, &ioh) != 0) { 318 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 319 device_xname(&sc->sc_dev), 320 ia->ia_io[0].ir_addr, ia->ia_io[0].ir_addr + 321 ia->ia_io[0].ir_size - 1)); 322 return; 323 } 324 325 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 326 ia->ia_iomem[0].ir_size, 0, &memh) != 0) { 327 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 328 device_xname(&sc->sc_dev), 329 ia->ia_iomem[0].ir_addr, ia->ia_iomem[0].ir_addr + 330 ia->ia_iomem[0].ir_size - 1)); 331 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 332 return; 333 } 334 335 asc->sc_regt = ia->ia_iot; 336 asc->sc_regh = ioh; 337 338 sc->hwinit = NULL; 339 sc->intrhook = NULL; 340 sc->hwreset = ai_reset; 341 sc->chan_attn = ai_atten; 342 343 sc->ie_bus_barrier = NULL; 344 345 sc->memcopyin = ai_copyin; 346 sc->memcopyout = ai_copyout; 347 sc->ie_bus_read16 = ai_read_16; 348 sc->ie_bus_write16 = ai_write_16; 349 sc->ie_bus_write24 = ai_write_24; 350 351 sc->do_xmitnopchain = 0; 352 353 sc->sc_mediachange = NULL; 354 sc->sc_mediastatus = NULL; 355 356 sc->bt = ia->ia_memt; 357 sc->bh = memh; 358 359 /* Map i/o space. */ 360 sc->sc_msize = ia->ia_iomem[0].ir_size; 361 sc->sc_maddr = (void *)memh; 362 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 363 364 /* set up pointers to important on-card control structures */ 365 sc->iscp = 0; 366 sc->scb = IE_ISCP_SZ; 367 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 368 369 sc->buf_area = sc->scb + IE_SCB_SZ; 370 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 371 372 /* zero card memory */ 373 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 374 375 /* set card to 16-bit bus mode */ 376 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 377 IE_SYSBUS_16BIT); 378 379 /* set up pointers to key structures */ 380 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 381 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 382 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 383 384 /* flush setup of pointers, check if chip answers */ 385 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 386 BUS_SPACE_BARRIER_WRITE); 387 if (!i82586_proberam(sc)) { 388 DPRINTF(("\n%s: can't talk to i82586!\n", 389 device_xname(&sc->sc_dev))); 390 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 391 bus_space_unmap(ia->ia_memt, memh, ia->ia_iomem[0].ir_size); 392 return; 393 } 394 395 val = bus_space_read_1(asc->sc_regt, asc->sc_regh, AI_REVISION); 396 asc->card_rev = SL_REV(val); 397 asc->card_type = SL_BOARD(val) - 1; 398 snprintf(name, sizeof(name), "%s, rev. %d", 399 ai_names[asc->card_type], asc->card_rev); 400 401 i82586_attach(sc, name, ethaddr, NULL, 0, 0); 402 403 asc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 404 IST_EDGE, IPL_NET, i82586_intr, sc); 405 if (asc->sc_ih == NULL) { 406 DPRINTF(("\n%s: can't establish interrupt\n", 407 device_xname(&sc->sc_dev))); 408 } 409 } 410 411 /* 412 * Divine the memory size of this board. 413 * Better hope there's nothing important hiding just below the card... 414 */ 415 static int 416 ai_find_mem_size(struct ai_softc* asc, bus_space_tag_t memt, bus_size_t maddr) 417 { 418 int size; 419 bus_space_handle_t memh; 420 struct ie_softc* sc = &asc->sc_ie; 421 422 for (size = 65536; size >= 16384; size -= 16384) { 423 if (bus_space_map(memt, maddr, size, 0, &memh) == 0) { 424 size = check_ie_present(sc, memt, maddr, size); 425 bus_space_unmap(memt, memh, size); 426 427 if (size != 0) 428 return size; 429 } 430 } 431 432 return (0); 433 } 434 435 /* 436 * Check to see if there's an 82586 out there. 437 */ 438 static int 439 check_ie_present(struct ie_softc* sc, bus_space_tag_t memt, bus_space_handle_t memh, bus_size_t size) 440 { 441 sc->hwreset = ai_reset; 442 sc->chan_attn = ai_atten; 443 sc->ie_bus_read16 = ai_read_16; 444 sc->ie_bus_write16 = ai_write_16; 445 446 sc->bt = memt; 447 sc->bh = memh; 448 sc->sc_iobase = (char *)memh + size - (1 << 24); 449 450 sc->scp = size + IE_SCP_ADDR - (1 << 24); 451 bus_space_set_region_1(memt, memh, (u_long) sc->scp, 0, IE_SCP_SZ); 452 453 sc->iscp = 0; 454 bus_space_set_region_1(memt, memh, (u_long) sc->iscp, 0, IE_ISCP_SZ); 455 456 sc->scb = IE_ISCP_SZ; 457 bus_space_set_region_1(memt, memh, sc->scb, 0, IE_SCB_SZ); 458 459 /* set card to 16-bit bus mode */ 460 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 461 IE_SYSBUS_16BIT); 462 463 /* set up pointers to key structures */ 464 ai_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 465 ai_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 466 ai_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 467 468 /* flush setup of pointers, check if chip answers */ 469 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 470 BUS_SPACE_BARRIER_WRITE); 471 472 if (!i82586_proberam(sc)) 473 return (0); 474 475 return (size); 476 } 477 478 CFATTACH_DECL(ai, sizeof(struct ai_softc), 479 ai_match, ai_attach, NULL, NULL); 480
Indexes created Fri Sep 26 20:09:58 GMT 2025