ahc_isa.c revision 1.19
1 /* $NetBSD: ahc_isa.c,v 1.19 2002/10/02 05:47:12 thorpej Exp $ */ 2 3 /* 4 * Product specific probe and attach routines for: 5 * AHA-284X VL-bus SCSI controllers 6 * 7 * Copyright (c) 1994, 1995, 1996, 1997, 1998 Justin T. Gibbs. 8 * All rights reserved. 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 immediately at the beginning of the file, without modification, 15 * this list of conditions, and the following disclaimer. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD: src/sys/dev/aic7xxx/ahc_eisa.c,v 1.15 2000/01/29 14:22:19 peter Exp $ 32 */ 33 34 /*- 35 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 36 * All rights reserved. 37 * 38 * This code is derived from software contributed to The NetBSD Foundation 39 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 40 * NASA Ames Research Center. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the NetBSD 53 * Foundation, Inc. and its contributors. 54 * 4. Neither the name of The NetBSD Foundation nor the names of its 55 * contributors may be used to endorse or promote products derived 56 * from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 68 * POSSIBILITY OF SUCH DAMAGE. 69 */ 70 71 /* 72 * Copyright (c) 1995, 1996 Christopher G. Demetriou 73 * All rights reserved. 74 * 75 * Redistribution and use in source and binary forms, with or without 76 * modification, are permitted provided that the following conditions 77 * are met: 78 * 1. Redistributions of source code must retain the above copyright 79 * notice, this list of conditions and the following disclaimer. 80 * 2. Redistributions in binary form must reproduce the above copyright 81 * notice, this list of conditions and the following disclaimer in the 82 * documentation and/or other materials provided with the distribution. 83 * 3. All advertising materials mentioning features or use of this software 84 * must display the following acknowledgement: 85 * This product includes software developed by Christopher G. Demetriou 86 * for the NetBSD Project. 87 * 4. The name of the author may not be used to endorse or promote products 88 * derived from this software without specific prior written permission 89 * 90 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 91 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 92 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 93 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 94 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 95 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 96 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 97 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 98 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 99 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102 /* 103 * This front-end driver is really sort of a hack. The AHA-284X likes 104 * to masquerade as an EISA device. However, on VLbus machines with 105 * no EISA signature in the BIOS, the EISA bus will never be scanned. 106 * This is intended to catch the 284X controllers on those systems 107 * by looking in "EISA i/o space" for 284X controllers. 108 * 109 * This relies heavily on i/o port accounting. We also just use the 110 * EISA macros for everything ... it's a real waste to redefine them. 111 * 112 * Note: there isn't any #ifdef for FreeBSD in this file, since the 113 * FreeBSD EISA driver handles all cases of the 284X. 114 * 115 * -- Jason R. Thorpe <thorpej (at) NetBSD.ORG> 116 * July 12, 1996 117 */ 118 119 #include <sys/cdefs.h> 120 __KERNEL_RCSID(0, "$NetBSD: ahc_isa.c,v 1.19 2002/10/02 05:47:12 thorpej Exp $"); 121 122 #include <sys/param.h> 123 #include <sys/systm.h> 124 #include <sys/kernel.h> 125 #include <sys/device.h> 126 #include <sys/queue.h> 127 #include <sys/malloc.h> 128 #include <sys/reboot.h> 129 130 #include <machine/bus.h> 131 #include <machine/intr.h> 132 133 #include <dev/scsipi/scsi_all.h> 134 #include <dev/scsipi/scsipi_all.h> 135 #include <dev/scsipi/scsiconf.h> 136 137 #include <dev/isa/isavar.h> 138 139 #include <dev/eisa/eisareg.h> 140 #include <dev/eisa/eisavar.h> 141 #include <dev/eisa/eisadevs.h> 142 143 #include <dev/microcode/aic7xxx/aic7xxx_reg.h> 144 #include <dev/ic/aic7xxxvar.h> 145 #include <dev/ic/aic77xxreg.h> 146 #include <dev/ic/aic77xxvar.h> 147 #include <dev/ic/smc93cx6var.h> 148 149 /* IO port address setting range as EISA slot number */ 150 #define AHC_ISA_MIN_SLOT 0x1 /* from iobase = 0x1c00 */ 151 #define AHC_ISA_MAX_SLOT 0xe /* to iobase = 0xec00 */ 152 153 #define AHC_ISA_SLOT_OFFSET AHC_EISA_SLOT_OFFSET 154 #define AHC_ISA_IOSIZE AHC_EISA_IOSIZE 155 156 /* 157 * I/O port offsets 158 */ 159 #define AHC_ISA_VID (EISA_SLOTOFF_VID - AHC_ISA_SLOT_OFFSET) 160 #define AHC_ISA_PID (EISA_SLOTOFF_PID - AHC_ISA_SLOT_OFFSET) 161 #define AHC_ISA_PRIMING AHC_ISA_VID /* enable vendor/product ID */ 162 163 /* 164 * AHC_ISA_PRIMING register values (write) 165 */ 166 #define AHC_ISA_PRIMING_VID(index) (AHC_ISA_VID + (index)) 167 #define AHC_ISA_PRIMING_PID(index) (AHC_ISA_PID + (index)) 168 169 int ahc_isa_idstring __P((bus_space_tag_t, bus_space_handle_t, char *)); 170 int ahc_isa_match __P((struct isa_attach_args *, bus_addr_t)); 171 172 int ahc_isa_probe __P((struct device *, struct cfdata *, void *)); 173 void ahc_isa_attach __P((struct device *, struct device *, void *)); 174 void aha2840_load_seeprom __P((struct ahc_softc *ahc)); 175 176 CFATTACH_DECL(ahc_isa, sizeof(struct ahc_softc), 177 ahc_isa_probe, ahc_isa_attach, NULL, NULL); 178 179 /* 180 * This keeps track of which slots are to be checked next if the 181 * iobase locator is a wildcard. A simple static variable isn't enough, 182 * since it's conceivable that a system might have more than one ISA 183 * bus. 184 * 185 * The "bus" member is the unit number of the parent ISA bus, e.g. "0" 186 * for "isa0". 187 */ 188 struct ahc_isa_slot { 189 LIST_ENTRY(ahc_isa_slot) link; 190 int bus; 191 int slot; 192 }; 193 static LIST_HEAD(, ahc_isa_slot) ahc_isa_all_slots; 194 static int ahc_isa_slot_initialized; 195 196 int 197 ahc_isa_idstring(iot, ioh, idstring) 198 bus_space_tag_t iot; 199 bus_space_handle_t ioh; 200 char *idstring; 201 { 202 u_int8_t vid[EISA_NVIDREGS], pid[EISA_NPIDREGS]; 203 int i; 204 205 /* Get the vendor ID bytes */ 206 for (i = 0; i < EISA_NVIDREGS; i++) { 207 bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, 208 AHC_ISA_PRIMING_VID(i)); 209 vid[i] = bus_space_read_1(iot, ioh, AHC_ISA_VID + i); 210 } 211 212 /* Check for device existence */ 213 if (EISA_VENDID_NODEV(vid)) { 214 #if 0 215 printf("ahc_isa_idstring: no device at 0x%lx\n", 216 ioh); /* XXX knows about ioh guts */ 217 printf("\t(0x%x, 0x%x)\n", vid[0], vid[1]); 218 #endif 219 return (0); 220 } 221 222 /* And check that the firmware didn't biff something badly */ 223 if (EISA_VENDID_IDDELAY(vid)) { 224 printf("ahc_isa_idstring: BIOS biffed it at 0x%lx\n", 225 ioh); /* XXX knows about ioh guts */ 226 return (0); 227 } 228 229 /* Get the product ID bytes */ 230 for (i = 0; i < EISA_NPIDREGS; i++) { 231 bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, 232 AHC_ISA_PRIMING_PID(i)); 233 pid[i] = bus_space_read_1(iot, ioh, AHC_ISA_PID + i); 234 } 235 236 /* Create the ID string from the vendor and product IDs */ 237 idstring[0] = EISA_VENDID_0(vid); 238 idstring[1] = EISA_VENDID_1(vid); 239 idstring[2] = EISA_VENDID_2(vid); 240 idstring[3] = EISA_PRODID_0(pid); 241 idstring[4] = EISA_PRODID_1(pid); 242 idstring[5] = EISA_PRODID_2(pid); 243 idstring[6] = EISA_PRODID_3(pid); 244 idstring[7] = '\0'; /* sanity */ 245 246 return (1); 247 } 248 249 int 250 ahc_isa_match(ia, iobase) 251 struct isa_attach_args *ia; 252 bus_addr_t iobase; 253 { 254 bus_space_tag_t iot = ia->ia_iot; 255 bus_space_handle_t ioh; 256 int irq; 257 char idstring[EISA_IDSTRINGLEN]; 258 259 /* 260 * Get a mapping for the while slot-specific address 261 * space. If we can't, assume nothing's there, but 262 * warn about it. 263 */ 264 if (bus_space_map(iot, iobase, AHC_ISA_IOSIZE, 0, &ioh)) { 265 #if 0 266 /* 267 * Don't print anything out here, since this could 268 * be common on machines configured to look for 269 * ahc_eisa and ahc_isa. 270 */ 271 printf("ahc_isa_match: can't map I/O space for 0x%x\n", 272 iobase); 273 #endif 274 return (0); 275 } 276 277 if (!ahc_isa_idstring(iot, ioh, idstring)) 278 irq = -1; /* cannot get the ID string */ 279 else if (strcmp(idstring, "ADP7756") && 280 strcmp(idstring, "ADP7757")) 281 irq = -1; /* unknown ID strings */ 282 else 283 irq = ahc_aic77xx_irq(iot, ioh); 284 285 bus_space_unmap(iot, ioh, AHC_ISA_IOSIZE); 286 287 if (irq < 0) 288 return (0); 289 290 if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT && 291 ia->ia_irq[0].ir_irq != irq) { 292 printf("ahc_isa_match: irq mismatch (kernel %d, card %d)\n", 293 ia->ia_irq[0].ir_irq, irq); 294 return (0); 295 } 296 297 /* We have a match */ 298 ia->ia_nio = 1; 299 ia->ia_io[0].ir_addr = iobase; 300 ia->ia_io[0].ir_size = AHC_ISA_IOSIZE; 301 302 ia->ia_nirq = 1; 303 ia->ia_irq[0].ir_irq = irq; 304 305 ia->ia_ndrq = 0; 306 ia->ia_niomem = 0; 307 308 return (1); 309 } 310 311 /* 312 * Check the slots looking for a board we recognise 313 * If we find one, note it's address (slot) and call 314 * the actual probe routine to check it out. 315 */ 316 int 317 ahc_isa_probe(parent, match, aux) 318 struct device *parent; 319 struct cfdata *match; 320 void *aux; 321 { 322 struct isa_attach_args *ia = aux; 323 struct ahc_isa_slot *as; 324 325 if (ahc_isa_slot_initialized == 0) { 326 LIST_INIT(&ahc_isa_all_slots); 327 ahc_isa_slot_initialized = 1; 328 } 329 330 if (ia->ia_nio < 1) 331 return (0); 332 if (ia->ia_nirq < 1) 333 return (0); 334 335 if (ISA_DIRECT_CONFIG(ia)) 336 return (0); 337 338 if (ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT) 339 return (ahc_isa_match(ia, ia->ia_io[0].ir_addr)); 340 341 /* 342 * Find this bus's state. If we don't yet have a slot 343 * marker, allocate and initialize one. 344 */ 345 for (as = ahc_isa_all_slots.lh_first; as != NULL; 346 as = as->link.le_next) 347 if (as->bus == parent->dv_unit) 348 goto found_slot_marker; 349 350 /* 351 * Don't have one, so make one. 352 */ 353 as = (struct ahc_isa_slot *) 354 malloc(sizeof(struct ahc_isa_slot), M_DEVBUF, M_NOWAIT); 355 if (as == NULL) 356 panic("ahc_isa_probe: can't allocate slot marker"); 357 358 as->bus = parent->dv_unit; 359 as->slot = AHC_ISA_MIN_SLOT; 360 LIST_INSERT_HEAD(&ahc_isa_all_slots, as, link); 361 362 found_slot_marker: 363 364 for (; as->slot <= AHC_ISA_MAX_SLOT; as->slot++) { 365 if (ahc_isa_match(ia, EISA_SLOT_ADDR(as->slot) + 366 AHC_ISA_SLOT_OFFSET)) { 367 as->slot++; /* next slot to search */ 368 return (1); 369 } 370 } 371 372 /* No matching cards were found. */ 373 return (0); 374 } 375 376 void 377 ahc_isa_attach(parent, self, aux) 378 struct device *parent, *self; 379 void *aux; 380 { 381 struct ahc_softc *ahc = (void *)self; 382 struct isa_attach_args *ia = aux; 383 bus_space_tag_t iot = ia->ia_iot; 384 bus_space_handle_t ioh; 385 int irq, intrtype; 386 const char *intrtypestr; 387 char idstring[EISA_IDSTRINGLEN]; 388 389 if (bus_space_map(iot, ia->ia_io[0].ir_addr, ia->ia_io[0].ir_size, 390 0, &ioh)) { 391 printf(": can't map i/o space\n"); 392 return; 393 } 394 if (!ahc_isa_idstring(iot, ioh, idstring)) { 395 printf(": can't read ID string\n"); 396 goto free_io; 397 } 398 if ((irq = ahc_aic77xx_irq(iot, ioh)) < 0) { 399 printf(": ahc_aic77xx_irq failed\n"); 400 goto free_io; 401 } 402 403 if (strcmp(idstring, "ADP7756") == 0) { 404 printf(": %s\n", EISA_PRODUCT_ADP7756); 405 } else if (strcmp(idstring, "ADP7757") == 0) { 406 printf(": %s\n", EISA_PRODUCT_ADP7757); 407 } else { 408 printf(": unknown device type %s\n", idstring); 409 goto free_io; 410 } 411 412 if (ahc_alloc(ahc, ioh, iot, ia->ia_dmat, 413 AHC_AIC7770|AHC_VL, AHC_AIC7770_FE, AHC_FNONE)) 414 goto free_io; 415 416 /* 417 * Tell the bus-dma interface that we can do 32bit dma 418 * NOTE: this variable is first referenced in ahc_init(). 419 */ 420 ahc->sc_dmaflags = ISABUS_DMA_32BIT; 421 422 ahc->channel = 'A'; 423 ahc->channel_b = 'B'; 424 if (ahc_reset(ahc) != 0) 425 goto free_ahc; 426 427 /* 428 * The IRQMS bit enables level sensitive interrupts. Only allow 429 * IRQ sharing if it's set. 430 * NOTE: ahc->pause is initialized in ahc_alloc(). 431 */ 432 if (ahc->pause & IRQMS) { 433 intrtype = IST_LEVEL; 434 intrtypestr = "level sensitive"; 435 } else { 436 intrtype = IST_EDGE; 437 intrtypestr = "edge triggered"; 438 } 439 ahc->ih = isa_intr_establish(ia->ia_ic, irq, 440 intrtype, IPL_BIO, ahc_intr, ahc); 441 if (ahc->ih == NULL) { 442 printf("%s: couldn't establish %s interrupt\n", 443 ahc->sc_dev.dv_xname, intrtypestr); 444 goto free_ahc; 445 } 446 447 /* 448 * Tell the user what type of interrupts we're using. 449 * usefull for debugging irq problems 450 */ 451 if (bootverbose) { 452 printf("%s: Using %s interrupts\n", 453 ahc->sc_dev.dv_xname, intrtypestr); 454 } 455 456 /* 457 * Now that we know we own the resources we need, do the 458 * card initialization. 459 */ 460 aha2840_load_seeprom(ahc); 461 462 /* Attach sub-devices */ 463 if (ahc_aic77xx_attach(ahc) == 0) 464 return; /* succeed */ 465 466 /* failed */ 467 isa_intr_disestablish(ia->ia_ic, ahc->ih); 468 free_ahc: 469 ahc_free(ahc); 470 free_io: 471 bus_space_unmap(iot, ioh, ia->ia_io[0].ir_size); 472 } 473 474 /* 475 * Read the 284x SEEPROM. 476 */ 477 void 478 aha2840_load_seeprom(struct ahc_softc *ahc) 479 { 480 struct seeprom_descriptor sd; 481 struct seeprom_config sc; 482 u_int16_t checksum = 0; 483 u_int8_t scsi_conf; 484 int have_seeprom; 485 486 sd.sd_tag = ahc->tag; 487 sd.sd_bsh = ahc->bsh; 488 sd.sd_control_offset = SEECTL_2840; 489 sd.sd_status_offset = STATUS_2840; 490 sd.sd_dataout_offset = STATUS_2840; 491 sd.sd_chip = C46; 492 sd.sd_MS = 0; 493 sd.sd_RDY = EEPROM_TF; 494 sd.sd_CS = CS_2840; 495 sd.sd_CK = CK_2840; 496 sd.sd_DO = DO_2840; 497 sd.sd_DI = DI_2840; 498 499 if (bootverbose) 500 printf("%s: Reading SEEPROM...", ahc_name(ahc)); 501 have_seeprom = read_seeprom(&sd, 502 (u_int16_t *)&sc, 503 /*start_addr*/0, 504 sizeof(sc)/2); 505 506 if (have_seeprom) { 507 /* Check checksum */ 508 int i; 509 int maxaddr = (sizeof(sc)/2) - 1; 510 u_int16_t *scarray = (u_int16_t *)≻ 511 512 for (i = 0; i < maxaddr; i++) 513 checksum = checksum + scarray[i]; 514 if (checksum != sc.checksum) { 515 if(bootverbose) 516 printf ("checksum error\n"); 517 have_seeprom = 0; 518 } else if (bootverbose) { 519 printf("done.\n"); 520 } 521 } 522 523 if (!have_seeprom) { 524 if (bootverbose) 525 printf("%s: No SEEPROM available\n", ahc_name(ahc)); 526 ahc->flags |= AHC_USEDEFAULTS; 527 } else { 528 /* 529 * Put the data we've collected down into SRAM 530 * where ahc_init will find it. 531 */ 532 int i; 533 int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8; 534 u_int16_t discenable; 535 536 discenable = 0; 537 for (i = 0; i < max_targ; i++){ 538 u_int8_t target_settings; 539 target_settings = (sc.device_flags[i] & CFXFER) << 4; 540 if (sc.device_flags[i] & CFSYNCH) 541 target_settings |= SOFS; 542 if (sc.device_flags[i] & CFWIDEB) 543 target_settings |= WIDEXFER; 544 if (sc.device_flags[i] & CFDISC) 545 discenable |= (0x01 << i); 546 ahc_outb(ahc, TARG_SCSIRATE + i, target_settings); 547 } 548 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff)); 549 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff)); 550 551 ahc->our_id = sc.brtime_id & CFSCSIID; 552 553 scsi_conf = (ahc->our_id & 0x7); 554 if (sc.adapter_control & CFSPARITY) 555 scsi_conf |= ENSPCHK; 556 if (sc.adapter_control & CFRESETB) 557 scsi_conf |= RESET_SCSI; 558 559 if (sc.bios_control & CF284XEXTEND) 560 ahc->flags |= AHC_EXTENDED_TRANS_A; 561 /* Set SCSICONF info */ 562 ahc_outb(ahc, SCSICONF, scsi_conf); 563 564 if (sc.adapter_control & CF284XSTERM) 565 ahc->flags |= AHC_TERM_ENB_A; 566 } 567 } 568
Indexes created Tue Sep 30 20:09:53 GMT 2025