ahc_isa.c revision 1.14
1 /* $NetBSD: ahc_isa.c,v 1.14 2000/09/24 12:37:04 jdolecek 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 #include <sys/reboot.h> 126 127 #include <machine/bus.h> 128 #include <machine/intr.h> 129 130 #include <dev/scsipi/scsi_all.h> 131 #include <dev/scsipi/scsipi_all.h> 132 #include <dev/scsipi/scsiconf.h> 133 134 #include <dev/isa/isavar.h> 135 136 #include <dev/eisa/eisareg.h> 137 #include <dev/eisa/eisavar.h> 138 #include <dev/eisa/eisadevs.h> 139 140 #include <dev/microcode/aic7xxx/aic7xxx_reg.h> 141 #include <dev/ic/aic7xxxvar.h> 142 #include <dev/ic/aic77xxreg.h> 143 #include <dev/ic/aic77xxvar.h> 144 #include <dev/ic/smc93cx6var.h> 145 146 /* IO port address setting range as EISA slot number */ 147 #define AHC_ISA_MIN_SLOT 0x1 /* from iobase = 0x1c00 */ 148 #define AHC_ISA_MAX_SLOT 0xe /* to iobase = 0xec00 */ 149 150 #define AHC_ISA_SLOT_OFFSET AHC_EISA_SLOT_OFFSET 151 #define AHC_ISA_IOSIZE AHC_EISA_IOSIZE 152 153 /* 154 * I/O port offsets 155 */ 156 #define AHC_ISA_VID (EISA_SLOTOFF_VID - AHC_ISA_SLOT_OFFSET) 157 #define AHC_ISA_PID (EISA_SLOTOFF_PID - AHC_ISA_SLOT_OFFSET) 158 #define AHC_ISA_PRIMING AHC_ISA_VID /* enable vendor/product ID */ 159 160 /* 161 * AHC_ISA_PRIMING register values (write) 162 */ 163 #define AHC_ISA_PRIMING_VID(index) (AHC_ISA_VID + (index)) 164 #define AHC_ISA_PRIMING_PID(index) (AHC_ISA_PID + (index)) 165 166 int ahc_isa_idstring __P((bus_space_tag_t, bus_space_handle_t, char *)); 167 int ahc_isa_match __P((struct isa_attach_args *, bus_addr_t)); 168 169 int ahc_isa_probe __P((struct device *, struct cfdata *, void *)); 170 void ahc_isa_attach __P((struct device *, struct device *, void *)); 171 void aha2840_load_seeprom __P((struct ahc_softc *ahc)); 172 173 struct cfattach ahc_isa_ca = { 174 sizeof(struct ahc_softc), ahc_isa_probe, ahc_isa_attach 175 }; 176 177 /* 178 * This keeps track of which slots are to be checked next if the 179 * iobase locator is a wildcard. A simple static variable isn't enough, 180 * since it's conceivable that a system might have more than one ISA 181 * bus. 182 * 183 * The "bus" member is the unit number of the parent ISA bus, e.g. "0" 184 * for "isa0". 185 */ 186 struct ahc_isa_slot { 187 LIST_ENTRY(ahc_isa_slot) link; 188 int bus; 189 int slot; 190 }; 191 static LIST_HEAD(, ahc_isa_slot) ahc_isa_all_slots; 192 static int ahc_isa_slot_initialized; 193 194 int 195 ahc_isa_idstring(iot, ioh, idstring) 196 bus_space_tag_t iot; 197 bus_space_handle_t ioh; 198 char *idstring; 199 { 200 u_int8_t vid[EISA_NVIDREGS], pid[EISA_NPIDREGS]; 201 int i; 202 203 /* Get the vendor ID bytes */ 204 for (i = 0; i < EISA_NVIDREGS; i++) { 205 bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, 206 AHC_ISA_PRIMING_VID(i)); 207 vid[i] = bus_space_read_1(iot, ioh, AHC_ISA_VID + i); 208 } 209 210 /* Check for device existence */ 211 if (EISA_VENDID_NODEV(vid)) { 212 #if 0 213 printf("ahc_isa_idstring: no device at 0x%lx\n", 214 ioh); /* XXX knows about ioh guts */ 215 printf("\t(0x%x, 0x%x)\n", vid[0], vid[1]); 216 #endif 217 return (0); 218 } 219 220 /* And check that the firmware didn't biff something badly */ 221 if (EISA_VENDID_IDDELAY(vid)) { 222 printf("ahc_isa_idstring: BIOS biffed it at 0x%lx\n", 223 ioh); /* XXX knows about ioh guts */ 224 return (0); 225 } 226 227 /* Get the product ID bytes */ 228 for (i = 0; i < EISA_NPIDREGS; i++) { 229 bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, 230 AHC_ISA_PRIMING_PID(i)); 231 pid[i] = bus_space_read_1(iot, ioh, AHC_ISA_PID + i); 232 } 233 234 /* Create the ID string from the vendor and product IDs */ 235 idstring[0] = EISA_VENDID_0(vid); 236 idstring[1] = EISA_VENDID_1(vid); 237 idstring[2] = EISA_VENDID_2(vid); 238 idstring[3] = EISA_PRODID_0(pid); 239 idstring[4] = EISA_PRODID_1(pid); 240 idstring[5] = EISA_PRODID_2(pid); 241 idstring[6] = EISA_PRODID_3(pid); 242 idstring[7] = '\0'; /* sanity */ 243 244 return (1); 245 } 246 247 int 248 ahc_isa_match(ia, iobase) 249 struct isa_attach_args *ia; 250 bus_addr_t iobase; 251 { 252 bus_space_tag_t iot = ia->ia_iot; 253 bus_space_handle_t ioh; 254 int irq; 255 char idstring[EISA_IDSTRINGLEN]; 256 257 /* 258 * Get a mapping for the while slot-specific address 259 * space. If we can't, assume nothing's there, but 260 * warn about it. 261 */ 262 if (bus_space_map(iot, iobase, AHC_ISA_IOSIZE, 0, &ioh)) { 263 #if 0 264 /* 265 * Don't print anything out here, since this could 266 * be common on machines configured to look for 267 * ahc_eisa and ahc_isa. 268 */ 269 printf("ahc_isa_match: can't map I/O space for 0x%x\n", 270 iobase); 271 #endif 272 return (0); 273 } 274 275 if (!ahc_isa_idstring(iot, ioh, idstring)) 276 irq = -1; /* cannot get the ID string */ 277 else if (strcmp(idstring, "ADP7756") && 278 strcmp(idstring, "ADP7757")) 279 irq = -1; /* unknown ID strings */ 280 else 281 irq = ahc_aic77xx_irq(iot, ioh); 282 283 bus_space_unmap(iot, ioh, AHC_ISA_IOSIZE); 284 285 if (irq < 0) 286 return (0); 287 288 if (ia->ia_irq != IRQUNK && 289 ia->ia_irq != irq) { 290 printf("ahc_isa_match: irq mismatch (kernel %d, card %d)\n", 291 ia->ia_irq, irq); 292 return (0); 293 } 294 295 /* We have a match */ 296 ia->ia_iobase = iobase; 297 ia->ia_irq = irq; 298 ia->ia_iosize = AHC_ISA_IOSIZE; 299 ia->ia_msize = 0; 300 return (1); 301 } 302 303 /* 304 * Check the slots looking for a board we recognise 305 * If we find one, note it's address (slot) and call 306 * the actual probe routine to check it out. 307 */ 308 int 309 ahc_isa_probe(parent, match, aux) 310 struct device *parent; 311 struct cfdata *match; 312 void *aux; 313 { 314 struct isa_attach_args *ia = aux; 315 struct ahc_isa_slot *as; 316 317 if (ahc_isa_slot_initialized == 0) { 318 LIST_INIT(&ahc_isa_all_slots); 319 ahc_isa_slot_initialized = 1; 320 } 321 322 if (ia->ia_iobase != IOBASEUNK) 323 return (ahc_isa_match(ia, ia->ia_iobase)); 324 325 /* 326 * Find this bus's state. If we don't yet have a slot 327 * marker, allocate and initialize one. 328 */ 329 for (as = ahc_isa_all_slots.lh_first; as != NULL; 330 as = as->link.le_next) 331 if (as->bus == parent->dv_unit) 332 goto found_slot_marker; 333 334 /* 335 * Don't have one, so make one. 336 */ 337 as = (struct ahc_isa_slot *) 338 malloc(sizeof(struct ahc_isa_slot), M_DEVBUF, M_NOWAIT); 339 if (as == NULL) 340 panic("ahc_isa_probe: can't allocate slot marker"); 341 342 as->bus = parent->dv_unit; 343 as->slot = AHC_ISA_MIN_SLOT; 344 LIST_INSERT_HEAD(&ahc_isa_all_slots, as, link); 345 346 found_slot_marker: 347 348 for (; as->slot <= AHC_ISA_MAX_SLOT; as->slot++) { 349 if (ahc_isa_match(ia, EISA_SLOT_ADDR(as->slot) + 350 AHC_ISA_SLOT_OFFSET)) { 351 as->slot++; /* next slot to search */ 352 return (1); 353 } 354 } 355 356 /* No matching cards were found. */ 357 return (0); 358 } 359 360 void 361 ahc_isa_attach(parent, self, aux) 362 struct device *parent, *self; 363 void *aux; 364 { 365 struct ahc_softc *ahc = (void *)self; 366 struct isa_attach_args *ia = aux; 367 bus_space_tag_t iot = ia->ia_iot; 368 bus_space_handle_t ioh; 369 int irq, intrtype; 370 const char *intrtypestr; 371 char idstring[EISA_IDSTRINGLEN]; 372 373 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 374 printf(": can't map i/o space\n"); 375 return; 376 } 377 if (!ahc_isa_idstring(iot, ioh, idstring)) { 378 printf(": can't read ID string\n"); 379 goto free_io; 380 } 381 if ((irq = ahc_aic77xx_irq(iot, ioh)) < 0) { 382 printf(": ahc_aic77xx_irq failed\n"); 383 goto free_io; 384 } 385 386 if (strcmp(idstring, "ADP7756") == 0) { 387 printf(": %s\n", EISA_PRODUCT_ADP7756); 388 } else if (strcmp(idstring, "ADP7757") == 0) { 389 printf(": %s\n", EISA_PRODUCT_ADP7757); 390 } else { 391 printf(": unknown device type %s\n", idstring); 392 goto free_io; 393 } 394 395 if (ahc_alloc(ahc, ioh, iot, ia->ia_dmat, 396 AHC_AIC7770|AHC_VL, AHC_AIC7770_FE, AHC_FNONE)) 397 goto free_io; 398 399 /* 400 * Tell the bus-dma interface that we can do 32bit dma 401 * NOTE: this variable is first referenced in ahc_init(). 402 */ 403 ahc->sc_dmaflags = ISABUS_DMA_32BIT; 404 405 ahc->channel = 'A'; 406 ahc->channel_b = 'B'; 407 if (ahc_reset(ahc) != 0) 408 goto free_ahc; 409 410 /* 411 * The IRQMS bit enables level sensitive interrupts. Only allow 412 * IRQ sharing if it's set. 413 * NOTE: ahc->pause is initialized in ahc_alloc(). 414 */ 415 if (ahc->pause & IRQMS) { 416 intrtype = IST_LEVEL; 417 intrtypestr = "level sensitive"; 418 } else { 419 intrtype = IST_EDGE; 420 intrtypestr = "edge triggered"; 421 } 422 ahc->ih = isa_intr_establish(ia->ia_ic, irq, 423 intrtype, IPL_BIO, ahc_intr, ahc); 424 if (ahc->ih == NULL) { 425 printf("%s: couldn't establish %s interrupt\n", 426 ahc->sc_dev.dv_xname, intrtypestr); 427 goto free_ahc; 428 } 429 430 /* 431 * Tell the user what type of interrupts we're using. 432 * usefull for debugging irq problems 433 */ 434 if (bootverbose) { 435 printf("%s: Using %s interrupts\n", 436 ahc->sc_dev.dv_xname, intrtypestr); 437 } 438 439 /* 440 * Now that we know we own the resources we need, do the 441 * card initialization. 442 */ 443 aha2840_load_seeprom(ahc); 444 445 /* Attach sub-devices */ 446 if (ahc_aic77xx_attach(ahc) == 0) 447 return; /* succeed */ 448 449 /* failed */ 450 isa_intr_disestablish(ia->ia_ic, ahc->ih); 451 free_ahc: 452 ahc_free(ahc); 453 free_io: 454 bus_space_unmap(iot, ioh, ia->ia_iosize); 455 } 456 457 /* 458 * Read the 284x SEEPROM. 459 */ 460 void 461 aha2840_load_seeprom(struct ahc_softc *ahc) 462 { 463 struct seeprom_descriptor sd; 464 struct seeprom_config sc; 465 u_int16_t checksum = 0; 466 u_int8_t scsi_conf; 467 int have_seeprom; 468 469 sd.sd_tag = ahc->tag; 470 sd.sd_bsh = ahc->bsh; 471 sd.sd_control_offset = SEECTL_2840; 472 sd.sd_status_offset = STATUS_2840; 473 sd.sd_dataout_offset = STATUS_2840; 474 sd.sd_chip = C46; 475 sd.sd_MS = 0; 476 sd.sd_RDY = EEPROM_TF; 477 sd.sd_CS = CS_2840; 478 sd.sd_CK = CK_2840; 479 sd.sd_DO = DO_2840; 480 sd.sd_DI = DI_2840; 481 482 if (bootverbose) 483 printf("%s: Reading SEEPROM...", ahc_name(ahc)); 484 have_seeprom = read_seeprom(&sd, 485 (u_int16_t *)&sc, 486 /*start_addr*/0, 487 sizeof(sc)/2); 488 489 if (have_seeprom) { 490 /* Check checksum */ 491 int i; 492 int maxaddr = (sizeof(sc)/2) - 1; 493 u_int16_t *scarray = (u_int16_t *)≻ 494 495 for (i = 0; i < maxaddr; i++) 496 checksum = checksum + scarray[i]; 497 if (checksum != sc.checksum) { 498 if(bootverbose) 499 printf ("checksum error\n"); 500 have_seeprom = 0; 501 } else if (bootverbose) { 502 printf("done.\n"); 503 } 504 } 505 506 if (!have_seeprom) { 507 if (bootverbose) 508 printf("%s: No SEEPROM available\n", ahc_name(ahc)); 509 ahc->flags |= AHC_USEDEFAULTS; 510 } else { 511 /* 512 * Put the data we've collected down into SRAM 513 * where ahc_init will find it. 514 */ 515 int i; 516 int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8; 517 u_int16_t discenable; 518 519 discenable = 0; 520 for (i = 0; i < max_targ; i++){ 521 u_int8_t target_settings; 522 target_settings = (sc.device_flags[i] & CFXFER) << 4; 523 if (sc.device_flags[i] & CFSYNCH) 524 target_settings |= SOFS; 525 if (sc.device_flags[i] & CFWIDEB) 526 target_settings |= WIDEXFER; 527 if (sc.device_flags[i] & CFDISC) 528 discenable |= (0x01 << i); 529 ahc_outb(ahc, TARG_SCSIRATE + i, target_settings); 530 } 531 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff)); 532 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff)); 533 534 ahc->our_id = sc.brtime_id & CFSCSIID; 535 536 scsi_conf = (ahc->our_id & 0x7); 537 if (sc.adapter_control & CFSPARITY) 538 scsi_conf |= ENSPCHK; 539 if (sc.adapter_control & CFRESETB) 540 scsi_conf |= RESET_SCSI; 541 542 if (sc.bios_control & CF284XEXTEND) 543 ahc->flags |= AHC_EXTENDED_TRANS_A; 544 /* Set SCSICONF info */ 545 ahc_outb(ahc, SCSICONF, scsi_conf); 546 547 if (sc.adapter_control & CF284XSTERM) 548 ahc->flags |= AHC_TERM_ENB_A; 549 } 550 } 551
Indexes created Tue Sep 30 20:09:53 GMT 2025