ahc_isa.c revision 1.13
1 /* $NetBSD: ahc_isa.c,v 1.13 2000/03/15 02:05:19 fvdl 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/param.h> 120 #include <sys/systm.h> 121 #include <sys/kernel.h> 122 #include <sys/device.h> 123 #include <sys/queue.h> 124 #include <sys/malloc.h> 125 126 #include <machine/bus.h> 127 #include <machine/intr.h> 128 129 #include <dev/scsipi/scsi_all.h> 130 #include <dev/scsipi/scsipi_all.h> 131 #include <dev/scsipi/scsiconf.h> 132 133 #include <dev/isa/isavar.h> 134 135 #include <dev/eisa/eisareg.h> 136 #include <dev/eisa/eisavar.h> 137 #include <dev/eisa/eisadevs.h> 138 139 #include <dev/microcode/aic7xxx/aic7xxx_reg.h> 140 #include <dev/ic/aic7xxxvar.h> 141 #include <dev/ic/aic77xxreg.h> 142 #include <dev/ic/aic77xxvar.h> 143 #include <dev/ic/smc93cx6var.h> 144 145 /* 146 * Under normal circumstances, these messages are unnecessary 147 * and not terribly cosmetic. 148 */ 149 #ifdef DEBUG 150 #define bootverbose 1 151 #else 152 #define bootverbose 1 153 #endif 154 155 /* IO port address setting range as EISA slot number */ 156 #define AHC_ISA_MIN_SLOT 0x1 /* from iobase = 0x1c00 */ 157 #define AHC_ISA_MAX_SLOT 0xe /* to iobase = 0xec00 */ 158 159 #define AHC_ISA_SLOT_OFFSET AHC_EISA_SLOT_OFFSET 160 #define AHC_ISA_IOSIZE AHC_EISA_IOSIZE 161 162 /* 163 * I/O port offsets 164 */ 165 #define AHC_ISA_VID (EISA_SLOTOFF_VID - AHC_ISA_SLOT_OFFSET) 166 #define AHC_ISA_PID (EISA_SLOTOFF_PID - AHC_ISA_SLOT_OFFSET) 167 #define AHC_ISA_PRIMING AHC_ISA_VID /* enable vendor/product ID */ 168 169 /* 170 * AHC_ISA_PRIMING register values (write) 171 */ 172 #define AHC_ISA_PRIMING_VID(index) (AHC_ISA_VID + (index)) 173 #define AHC_ISA_PRIMING_PID(index) (AHC_ISA_PID + (index)) 174 175 int ahc_isa_idstring __P((bus_space_tag_t, bus_space_handle_t, char *)); 176 int ahc_isa_match __P((struct isa_attach_args *, bus_addr_t)); 177 178 int ahc_isa_probe __P((struct device *, struct cfdata *, void *)); 179 void ahc_isa_attach __P((struct device *, struct device *, void *)); 180 void aha2840_load_seeprom __P((struct ahc_softc *ahc)); 181 182 struct cfattach ahc_isa_ca = { 183 sizeof(struct ahc_softc), ahc_isa_probe, ahc_isa_attach 184 }; 185 186 /* 187 * This keeps track of which slots are to be checked next if the 188 * iobase locator is a wildcard. A simple static variable isn't enough, 189 * since it's conceivable that a system might have more than one ISA 190 * bus. 191 * 192 * The "bus" member is the unit number of the parent ISA bus, e.g. "0" 193 * for "isa0". 194 */ 195 struct ahc_isa_slot { 196 LIST_ENTRY(ahc_isa_slot) link; 197 int bus; 198 int slot; 199 }; 200 static LIST_HEAD(, ahc_isa_slot) ahc_isa_all_slots; 201 static int ahc_isa_slot_initialized; 202 203 int 204 ahc_isa_idstring(iot, ioh, idstring) 205 bus_space_tag_t iot; 206 bus_space_handle_t ioh; 207 char *idstring; 208 { 209 u_int8_t vid[EISA_NVIDREGS], pid[EISA_NPIDREGS]; 210 int i; 211 212 /* Get the vendor ID bytes */ 213 for (i = 0; i < EISA_NVIDREGS; i++) { 214 bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, 215 AHC_ISA_PRIMING_VID(i)); 216 vid[i] = bus_space_read_1(iot, ioh, AHC_ISA_VID + i); 217 } 218 219 /* Check for device existence */ 220 if (EISA_VENDID_NODEV(vid)) { 221 #if 0 222 printf("ahc_isa_idstring: no device at 0x%lx\n", 223 ioh); /* XXX knows about ioh guts */ 224 printf("\t(0x%x, 0x%x)\n", vid[0], vid[1]); 225 #endif 226 return (0); 227 } 228 229 /* And check that the firmware didn't biff something badly */ 230 if (EISA_VENDID_IDDELAY(vid)) { 231 printf("ahc_isa_idstring: BIOS biffed it at 0x%lx\n", 232 ioh); /* XXX knows about ioh guts */ 233 return (0); 234 } 235 236 /* Get the product ID bytes */ 237 for (i = 0; i < EISA_NPIDREGS; i++) { 238 bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, 239 AHC_ISA_PRIMING_PID(i)); 240 pid[i] = bus_space_read_1(iot, ioh, AHC_ISA_PID + i); 241 } 242 243 /* Create the ID string from the vendor and product IDs */ 244 idstring[0] = EISA_VENDID_0(vid); 245 idstring[1] = EISA_VENDID_1(vid); 246 idstring[2] = EISA_VENDID_2(vid); 247 idstring[3] = EISA_PRODID_0(pid); 248 idstring[4] = EISA_PRODID_1(pid); 249 idstring[5] = EISA_PRODID_2(pid); 250 idstring[6] = EISA_PRODID_3(pid); 251 idstring[7] = '\0'; /* sanity */ 252 253 return (1); 254 } 255 256 int 257 ahc_isa_match(ia, iobase) 258 struct isa_attach_args *ia; 259 bus_addr_t iobase; 260 { 261 bus_space_tag_t iot = ia->ia_iot; 262 bus_space_handle_t ioh; 263 int irq; 264 char idstring[EISA_IDSTRINGLEN]; 265 266 /* 267 * Get a mapping for the while slot-specific address 268 * space. If we can't, assume nothing's there, but 269 * warn about it. 270 */ 271 if (bus_space_map(iot, iobase, AHC_ISA_IOSIZE, 0, &ioh)) { 272 #if 0 273 /* 274 * Don't print anything out here, since this could 275 * be common on machines configured to look for 276 * ahc_eisa and ahc_isa. 277 */ 278 printf("ahc_isa_match: can't map I/O space for 0x%x\n", 279 iobase); 280 #endif 281 return (0); 282 } 283 284 if (!ahc_isa_idstring(iot, ioh, idstring)) 285 irq = -1; /* cannot get the ID string */ 286 else if (strcmp(idstring, "ADP7756") && 287 strcmp(idstring, "ADP7757")) 288 irq = -1; /* unknown ID strings */ 289 else 290 irq = ahc_aic77xx_irq(iot, ioh); 291 292 bus_space_unmap(iot, ioh, AHC_ISA_IOSIZE); 293 294 if (irq < 0) 295 return (0); 296 297 if (ia->ia_irq != IRQUNK && 298 ia->ia_irq != irq) { 299 printf("ahc_isa_match: irq mismatch (kernel %d, card %d)\n", 300 ia->ia_irq, irq); 301 return (0); 302 } 303 304 /* We have a match */ 305 ia->ia_iobase = iobase; 306 ia->ia_irq = irq; 307 ia->ia_iosize = AHC_ISA_IOSIZE; 308 ia->ia_msize = 0; 309 return (1); 310 } 311 312 /* 313 * Check the slots looking for a board we recognise 314 * If we find one, note it's address (slot) and call 315 * the actual probe routine to check it out. 316 */ 317 int 318 ahc_isa_probe(parent, match, aux) 319 struct device *parent; 320 struct cfdata *match; 321 void *aux; 322 { 323 struct isa_attach_args *ia = aux; 324 struct ahc_isa_slot *as; 325 326 if (ahc_isa_slot_initialized == 0) { 327 LIST_INIT(&ahc_isa_all_slots); 328 ahc_isa_slot_initialized = 1; 329 } 330 331 if (ia->ia_iobase != IOBASEUNK) 332 return (ahc_isa_match(ia, ia->ia_iobase)); 333 334 /* 335 * Find this bus's state. If we don't yet have a slot 336 * marker, allocate and initialize one. 337 */ 338 for (as = ahc_isa_all_slots.lh_first; as != NULL; 339 as = as->link.le_next) 340 if (as->bus == parent->dv_unit) 341 goto found_slot_marker; 342 343 /* 344 * Don't have one, so make one. 345 */ 346 as = (struct ahc_isa_slot *) 347 malloc(sizeof(struct ahc_isa_slot), M_DEVBUF, M_NOWAIT); 348 if (as == NULL) 349 panic("ahc_isa_probe: can't allocate slot marker"); 350 351 as->bus = parent->dv_unit; 352 as->slot = AHC_ISA_MIN_SLOT; 353 LIST_INSERT_HEAD(&ahc_isa_all_slots, as, link); 354 355 found_slot_marker: 356 357 for (; as->slot <= AHC_ISA_MAX_SLOT; as->slot++) { 358 if (ahc_isa_match(ia, EISA_SLOT_ADDR(as->slot) + 359 AHC_ISA_SLOT_OFFSET)) { 360 as->slot++; /* next slot to search */ 361 return (1); 362 } 363 } 364 365 /* No matching cards were found. */ 366 return (0); 367 } 368 369 void 370 ahc_isa_attach(parent, self, aux) 371 struct device *parent, *self; 372 void *aux; 373 { 374 struct ahc_softc *ahc = (void *)self; 375 struct isa_attach_args *ia = aux; 376 bus_space_tag_t iot = ia->ia_iot; 377 bus_space_handle_t ioh; 378 int irq, intrtype; 379 const char *intrtypestr; 380 char idstring[EISA_IDSTRINGLEN]; 381 382 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 383 printf(": can't map i/o space\n"); 384 return; 385 } 386 if (!ahc_isa_idstring(iot, ioh, idstring)) { 387 printf(": can't read ID string\n"); 388 goto free_io; 389 } 390 if ((irq = ahc_aic77xx_irq(iot, ioh)) < 0) { 391 printf(": ahc_aic77xx_irq failed\n"); 392 goto free_io; 393 } 394 395 if (strcmp(idstring, "ADP7756") == 0) { 396 printf(": %s\n", EISA_PRODUCT_ADP7756); 397 } else if (strcmp(idstring, "ADP7757") == 0) { 398 printf(": %s\n", EISA_PRODUCT_ADP7757); 399 } else { 400 printf(": unknown device type %s\n", idstring); 401 goto free_io; 402 } 403 404 if (ahc_alloc(ahc, ioh, iot, ia->ia_dmat, 405 AHC_AIC7770|AHC_VL, AHC_AIC7770_FE, AHC_FNONE)) 406 goto free_io; 407 408 /* 409 * Tell the bus-dma interface that we can do 32bit dma 410 * NOTE: this variable is first referenced in ahc_init(). 411 */ 412 ahc->sc_dmaflags = ISABUS_DMA_32BIT; 413 414 ahc->channel = 'A'; 415 ahc->channel_b = 'B'; 416 if (ahc_reset(ahc) != 0) 417 goto free_ahc; 418 419 /* 420 * The IRQMS bit enables level sensitive interrupts. Only allow 421 * IRQ sharing if it's set. 422 * NOTE: ahc->pause is initialized in ahc_alloc(). 423 */ 424 if (ahc->pause & IRQMS) { 425 intrtype = IST_LEVEL; 426 intrtypestr = "level sensitive"; 427 } else { 428 intrtype = IST_EDGE; 429 intrtypestr = "edge triggered"; 430 } 431 ahc->ih = isa_intr_establish(ia->ia_ic, irq, 432 intrtype, IPL_BIO, ahc_intr, ahc); 433 if (ahc->ih == NULL) { 434 printf("%s: couldn't establish %s interrupt\n", 435 ahc->sc_dev.dv_xname, intrtypestr); 436 goto free_ahc; 437 } 438 439 /* 440 * Tell the user what type of interrupts we're using. 441 * usefull for debugging irq problems 442 */ 443 if (bootverbose) { 444 printf("%s: Using %s interrupts\n", 445 ahc->sc_dev.dv_xname, intrtypestr); 446 } 447 448 /* 449 * Now that we know we own the resources we need, do the 450 * card initialization. 451 */ 452 aha2840_load_seeprom(ahc); 453 454 /* Attach sub-devices */ 455 if (ahc_aic77xx_attach(ahc) == 0) 456 return; /* succeed */ 457 458 /* failed */ 459 isa_intr_disestablish(ia->ia_ic, ahc->ih); 460 free_ahc: 461 ahc_free(ahc); 462 free_io: 463 bus_space_unmap(iot, ioh, ia->ia_iosize); 464 } 465 466 /* 467 * Read the 284x SEEPROM. 468 */ 469 void 470 aha2840_load_seeprom(struct ahc_softc *ahc) 471 { 472 struct seeprom_descriptor sd; 473 struct seeprom_config sc; 474 u_int16_t checksum = 0; 475 u_int8_t scsi_conf; 476 int have_seeprom; 477 478 sd.sd_tag = ahc->tag; 479 sd.sd_bsh = ahc->bsh; 480 sd.sd_control_offset = SEECTL_2840; 481 sd.sd_status_offset = STATUS_2840; 482 sd.sd_dataout_offset = STATUS_2840; 483 sd.sd_chip = C46; 484 sd.sd_MS = 0; 485 sd.sd_RDY = EEPROM_TF; 486 sd.sd_CS = CS_2840; 487 sd.sd_CK = CK_2840; 488 sd.sd_DO = DO_2840; 489 sd.sd_DI = DI_2840; 490 491 if (bootverbose) 492 printf("%s: Reading SEEPROM...", ahc_name(ahc)); 493 have_seeprom = read_seeprom(&sd, 494 (u_int16_t *)&sc, 495 /*start_addr*/0, 496 sizeof(sc)/2); 497 498 if (have_seeprom) { 499 /* Check checksum */ 500 int i; 501 int maxaddr = (sizeof(sc)/2) - 1; 502 u_int16_t *scarray = (u_int16_t *)≻ 503 504 for (i = 0; i < maxaddr; i++) 505 checksum = checksum + scarray[i]; 506 if (checksum != sc.checksum) { 507 if(bootverbose) 508 printf ("checksum error\n"); 509 have_seeprom = 0; 510 } else if (bootverbose) { 511 printf("done.\n"); 512 } 513 } 514 515 if (!have_seeprom) { 516 if (bootverbose) 517 printf("%s: No SEEPROM available\n", ahc_name(ahc)); 518 ahc->flags |= AHC_USEDEFAULTS; 519 } else { 520 /* 521 * Put the data we've collected down into SRAM 522 * where ahc_init will find it. 523 */ 524 int i; 525 int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8; 526 u_int16_t discenable; 527 528 discenable = 0; 529 for (i = 0; i < max_targ; i++){ 530 u_int8_t target_settings; 531 target_settings = (sc.device_flags[i] & CFXFER) << 4; 532 if (sc.device_flags[i] & CFSYNCH) 533 target_settings |= SOFS; 534 if (sc.device_flags[i] & CFWIDEB) 535 target_settings |= WIDEXFER; 536 if (sc.device_flags[i] & CFDISC) 537 discenable |= (0x01 << i); 538 ahc_outb(ahc, TARG_SCSIRATE + i, target_settings); 539 } 540 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff)); 541 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff)); 542 543 ahc->our_id = sc.brtime_id & CFSCSIID; 544 545 scsi_conf = (ahc->our_id & 0x7); 546 if (sc.adapter_control & CFSPARITY) 547 scsi_conf |= ENSPCHK; 548 if (sc.adapter_control & CFRESETB) 549 scsi_conf |= RESET_SCSI; 550 551 if (sc.bios_control & CF284XEXTEND) 552 ahc->flags |= AHC_EXTENDED_TRANS_A; 553 /* Set SCSICONF info */ 554 ahc_outb(ahc, SCSICONF, scsi_conf); 555 556 if (sc.adapter_control & CF284XSTERM) 557 ahc->flags |= AHC_TERM_ENB_A; 558 } 559 } 560
Indexes created Tue Sep 30 20:09:53 GMT 2025