1 /*- 2 * Copyright (c) 1999 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 /* 27 * Modifications for Intel architecture by Garrett A. Wollman. 28 * Copyright 1998 Massachusetts Institute of Technology 29 * 30 * Permission to use, copy, modify, and distribute this software and 31 * its documentation for any purpose and without fee is hereby 32 * granted, provided that both the above copyright notice and this 33 * permission notice appear in all copies, that both the above 34 * copyright notice and this permission notice appear in all 35 * supporting documentation, and that the name of M.I.T. not be used 36 * in advertising or publicity pertaining to distribution of the 37 * software without specific, written prior permission. M.I.T. makes 38 * no representations about the suitability of this software for any 39 * purpose. It is provided "as is" without express or implied 40 * warranty. 41 * 42 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 43 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 44 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 45 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 46 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 47 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 48 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 49 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 50 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 51 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 52 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 */ 55 56 /* 57 * Parts of the ISA bus implementation common to all architectures. 58 */ 59 60 #include <sys/cdefs.h> 61 __FBSDID("$FreeBSD$"); 62 63 #include "opt_isa.h" 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/bus.h> 69 #include <sys/malloc.h> 70 #include <sys/module.h> 71 #include <machine/bus.h> 72 #include <sys/rman.h> 73 74 #include <machine/resource.h> 75 76 #include <isa/isavar.h> 77 #include <isa/isa_common.h> 78 79 static int isa_print_child(device_t bus, device_t dev); 80 81 static MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device"); 82 83 static int isa_running; 84 85 /* 86 * At 'probe' time, we add all the devices which we know about to the 87 * bus. The generic attach routine will probe and attach them if they 88 * are alive. 89 */ 90 static int 91 isa_probe(device_t dev) 92 { 93 device_set_desc(dev, "ISA bus"); 94 isa_init(dev); /* Allow machdep code to initialise */ 95 return (0); 96 } 97 98 extern device_t isa_bus_device; 99 100 static int 101 isa_attach(device_t dev) 102 { 103 /* 104 * Arrange for isa_probe_children(dev) to be called later. XXX 105 */ 106 isa_bus_device = dev; 107 return (0); 108 } 109 110 /* 111 * Find a working set of memory regions for a child using the ranges 112 * in *config and return the regions in *result. Returns non-zero if 113 * a set of ranges was found. 114 */ 115 static int 116 isa_find_memory(device_t child, struct isa_config *config, 117 struct isa_config *result) 118 { 119 int success, i; 120 struct resource *res[ISA_NMEM]; 121 122 /* 123 * First clear out any existing resource definitions. 124 */ 125 for (i = 0; i < ISA_NMEM; i++) { 126 bus_delete_resource(child, SYS_RES_MEMORY, i); 127 res[i] = NULL; 128 } 129 130 success = 1; 131 result->ic_nmem = config->ic_nmem; 132 for (i = 0; i < config->ic_nmem; i++) { 133 uint32_t start, end, size, align; 134 135 size = config->ic_mem[i].ir_size; 136 137 /* the PnP device may have a null resource as filler */ 138 if (size == 0) { 139 result->ic_mem[i].ir_start = 0; 140 result->ic_mem[i].ir_end = 0; 141 result->ic_mem[i].ir_size = 0; 142 result->ic_mem[i].ir_align = 0; 143 continue; 144 } 145 146 for (start = config->ic_mem[i].ir_start, 147 end = config->ic_mem[i].ir_end, 148 align = config->ic_mem[i].ir_align; 149 start + size - 1 <= end && start + size > start; 150 start += MAX(align, 1)) { 151 bus_set_resource(child, SYS_RES_MEMORY, i, 152 start, size); 153 res[i] = bus_alloc_resource(child, 154 SYS_RES_MEMORY, &i, 0, ~0, 1, 155 rman_make_alignment_flags(align) /* !RF_ACTIVE */); 156 if (res[i]) { 157 result->ic_mem[i].ir_start = start; 158 result->ic_mem[i].ir_end = start + size - 1; 159 result->ic_mem[i].ir_size = size; 160 result->ic_mem[i].ir_align = align; 161 break; 162 } 163 } 164 165 /* 166 * If we didn't find a place for memory range i, then 167 * give up now. 168 */ 169 if (!res[i]) { 170 success = 0; 171 break; 172 } 173 } 174 175 for (i = 0; i < ISA_NMEM; i++) { 176 if (res[i]) 177 bus_release_resource(child, SYS_RES_MEMORY, 178 i, res[i]); 179 } 180 181 return (success); 182 } 183 184 /* 185 * Find a working set of port regions for a child using the ranges 186 * in *config and return the regions in *result. Returns non-zero if 187 * a set of ranges was found. 188 */ 189 static int 190 isa_find_port(device_t child, struct isa_config *config, 191 struct isa_config *result) 192 { 193 int success, i; 194 struct resource *res[ISA_NPORT]; 195 196 /* 197 * First clear out any existing resource definitions. 198 */ 199 for (i = 0; i < ISA_NPORT; i++) { 200 bus_delete_resource(child, SYS_RES_IOPORT, i); 201 res[i] = NULL; 202 } 203 204 success = 1; 205 result->ic_nport = config->ic_nport; 206 for (i = 0; i < config->ic_nport; i++) { 207 uint32_t start, end, size, align; 208 209 size = config->ic_port[i].ir_size; 210 211 /* the PnP device may have a null resource as filler */ 212 if (size == 0) { 213 result->ic_port[i].ir_start = 0; 214 result->ic_port[i].ir_end = 0; 215 result->ic_port[i].ir_size = 0; 216 result->ic_port[i].ir_align = 0; 217 continue; 218 } 219 220 for (start = config->ic_port[i].ir_start, 221 end = config->ic_port[i].ir_end, 222 align = config->ic_port[i].ir_align; 223 start + size - 1 <= end; 224 start += align) { 225 bus_set_resource(child, SYS_RES_IOPORT, i, 226 start, size); 227 res[i] = bus_alloc_resource(child, 228 SYS_RES_IOPORT, &i, 0, ~0, 1, 229 rman_make_alignment_flags(align) /* !RF_ACTIVE */); 230 if (res[i]) { 231 result->ic_port[i].ir_start = start; 232 result->ic_port[i].ir_end = start + size - 1; 233 result->ic_port[i].ir_size = size; 234 result->ic_port[i].ir_align = align; 235 break; 236 } 237 } 238 239 /* 240 * If we didn't find a place for port range i, then 241 * give up now. 242 */ 243 if (!res[i]) { 244 success = 0; 245 break; 246 } 247 } 248 249 for (i = 0; i < ISA_NPORT; i++) { 250 if (res[i]) 251 bus_release_resource(child, SYS_RES_IOPORT, 252 i, res[i]); 253 } 254 255 return success; 256 } 257 258 /* 259 * Return the index of the first bit in the mask (or -1 if mask is empty. 260 */ 261 static int 262 find_first_bit(uint32_t mask) 263 { 264 return (ffs(mask) - 1); 265 } 266 267 /* 268 * Return the index of the next bit in the mask, or -1 if there are no more. 269 */ 270 static int 271 find_next_bit(uint32_t mask, int bit) 272 { 273 bit++; 274 while (bit < 32 && !(mask & (1 << bit))) 275 bit++; 276 if (bit != 32) 277 return (bit); 278 return (-1); 279 } 280 281 /* 282 * Find a working set of irqs for a child using the masks in *config 283 * and return the regions in *result. Returns non-zero if a set of 284 * irqs was found. 285 */ 286 static int 287 isa_find_irq(device_t child, struct isa_config *config, 288 struct isa_config *result) 289 { 290 int success, i; 291 struct resource *res[ISA_NIRQ]; 292 293 /* 294 * First clear out any existing resource definitions. 295 */ 296 for (i = 0; i < ISA_NIRQ; i++) { 297 bus_delete_resource(child, SYS_RES_IRQ, i); 298 res[i] = NULL; 299 } 300 301 success = 1; 302 result->ic_nirq = config->ic_nirq; 303 for (i = 0; i < config->ic_nirq; i++) { 304 uint32_t mask = config->ic_irqmask[i]; 305 int irq; 306 307 /* the PnP device may have a null resource as filler */ 308 if (mask == 0) { 309 result->ic_irqmask[i] = 0; 310 continue; 311 } 312 313 for (irq = find_first_bit(mask); 314 irq != -1; 315 irq = find_next_bit(mask, irq)) { 316 bus_set_resource(child, SYS_RES_IRQ, i, 317 irq, 1); 318 res[i] = bus_alloc_resource_any(child, 319 SYS_RES_IRQ, &i, 320 0 /* !RF_ACTIVE */ ); 321 if (res[i]) { 322 result->ic_irqmask[i] = (1 << irq); 323 break; 324 } 325 } 326 327 /* 328 * If we didn't find a place for irq range i, then 329 * give up now. 330 */ 331 if (!res[i]) { 332 success = 0; 333 break; 334 } 335 } 336 337 for (i = 0; i < ISA_NIRQ; i++) { 338 if (res[i]) 339 bus_release_resource(child, SYS_RES_IRQ, 340 i, res[i]); 341 } 342 343 return (success); 344 } 345 346 /* 347 * Find a working set of drqs for a child using the masks in *config 348 * and return the regions in *result. Returns non-zero if a set of 349 * drqs was found. 350 */ 351 static int 352 isa_find_drq(device_t child, struct isa_config *config, 353 struct isa_config *result) 354 { 355 int success, i; 356 struct resource *res[ISA_NDRQ]; 357 358 /* 359 * First clear out any existing resource definitions. 360 */ 361 for (i = 0; i < ISA_NDRQ; i++) { 362 bus_delete_resource(child, SYS_RES_DRQ, i); 363 res[i] = NULL; 364 } 365 366 success = 1; 367 result->ic_ndrq = config->ic_ndrq; 368 for (i = 0; i < config->ic_ndrq; i++) { 369 uint32_t mask = config->ic_drqmask[i]; 370 int drq; 371 372 /* the PnP device may have a null resource as filler */ 373 if (mask == 0) { 374 result->ic_drqmask[i] = 0; 375 continue; 376 } 377 378 for (drq = find_first_bit(mask); 379 drq != -1; 380 drq = find_next_bit(mask, drq)) { 381 bus_set_resource(child, SYS_RES_DRQ, i, 382 drq, 1); 383 res[i] = bus_alloc_resource_any(child, 384 SYS_RES_DRQ, &i, 385 0 /* !RF_ACTIVE */); 386 if (res[i]) { 387 result->ic_drqmask[i] = (1 << drq); 388 break; 389 } 390 } 391 392 /* 393 * If we didn't find a place for drq range i, then 394 * give up now. 395 */ 396 if (!res[i]) { 397 success = 0; 398 break; 399 } 400 } 401 402 for (i = 0; i < ISA_NDRQ; i++) { 403 if (res[i]) 404 bus_release_resource(child, SYS_RES_DRQ, 405 i, res[i]); 406 } 407 408 return (success); 409 } 410 411 /* 412 * Attempt to find a working set of resources for a device. Return 413 * non-zero if a working configuration is found. 414 */ 415 static int 416 isa_assign_resources(device_t child) 417 { 418 struct isa_device *idev = DEVTOISA(child); 419 struct isa_config_entry *ice; 420 struct isa_config *cfg; 421 const char *reason; 422 423 reason = "Empty ISA id_configs"; 424 cfg = malloc(sizeof(struct isa_config), M_TEMP, M_NOWAIT|M_ZERO); 425 if (cfg == NULL) 426 return(0); 427 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 428 reason = "memory"; 429 if (!isa_find_memory(child, &ice->ice_config, cfg)) 430 continue; 431 reason = "port"; 432 if (!isa_find_port(child, &ice->ice_config, cfg)) 433 continue; 434 reason = "irq"; 435 if (!isa_find_irq(child, &ice->ice_config, cfg)) 436 continue; 437 reason = "drq"; 438 if (!isa_find_drq(child, &ice->ice_config, cfg)) 439 continue; 440 441 /* 442 * A working configuration was found enable the device 443 * with this configuration. 444 */ 445 reason = "no callback"; 446 if (idev->id_config_cb) { 447 idev->id_config_cb(idev->id_config_arg, 448 cfg, 1); 449 free(cfg, M_TEMP); 450 return (1); 451 } 452 } 453 454 /* 455 * Disable the device. 456 */ 457 bus_print_child_header(device_get_parent(child), child); 458 printf(" can't assign resources (%s)\n", reason); 459 if (bootverbose) 460 isa_print_child(device_get_parent(child), child); 461 bzero(cfg, sizeof (*cfg)); 462 if (idev->id_config_cb) 463 idev->id_config_cb(idev->id_config_arg, cfg, 0); 464 device_disable(child); 465 466 free(cfg, M_TEMP); 467 return (0); 468 } 469 470 void 471 isa_probe_children(device_t dev) 472 { 473 device_t *children; 474 struct isa_config *cfg; 475 int nchildren, i; 476 477 /* 478 * Create all the children by calling driver's identify methods. 479 */ 480 bus_generic_probe(dev); 481 482 if (device_get_children(dev, &children, &nchildren)) 483 return; 484 485 /* 486 * First disable all pnp devices so that they don't get 487 * matched by legacy probes. 488 */ 489 if (bootverbose) 490 printf("isa_probe_children: disabling PnP devices\n"); 491 492 cfg = malloc(sizeof(*cfg), M_TEMP, M_NOWAIT|M_ZERO); 493 if (cfg == NULL) { 494 free(children, M_TEMP); 495 return; 496 } 497 498 for (i = 0; i < nchildren; i++) { 499 device_t child = children[i]; 500 struct isa_device *idev = DEVTOISA(child); 501 502 bzero(cfg, sizeof(*cfg)); 503 if (idev->id_config_cb) 504 idev->id_config_cb(idev->id_config_arg, cfg, 0); 505 } 506 507 free(cfg, M_TEMP); 508 509 /* 510 * Next probe all non-pnp devices so that they claim their 511 * resources first. 512 */ 513 if (bootverbose) 514 printf("isa_probe_children: probing non-PnP devices\n"); 515 for (i = 0; i < nchildren; i++) { 516 device_t child = children[i]; 517 struct isa_device *idev = DEVTOISA(child); 518 519 if (TAILQ_FIRST(&idev->id_configs)) 520 continue; 521 522 device_probe_and_attach(child); 523 } 524 525 /* 526 * Finally assign resource to pnp devices and probe them. 527 */ 528 if (bootverbose) 529 printf("isa_probe_children: probing PnP devices\n"); 530 for (i = 0; i < nchildren; i++) { 531 device_t child = children[i]; 532 struct isa_device* idev = DEVTOISA(child); 533 534 if (!TAILQ_FIRST(&idev->id_configs)) 535 continue; 536 537 if (isa_assign_resources(child)) { 538 struct resource_list *rl = &idev->id_resources; 539 struct resource_list_entry *rle; 540 541 device_probe_and_attach(child); 542 543 /* 544 * Claim any unallocated resources to keep other 545 * devices from using them. 546 */ 547 STAILQ_FOREACH(rle, rl, link) { 548 if (!rle->res) { 549 int rid = rle->rid; 550 resource_list_alloc(rl, dev, child, 551 rle->type, 552 &rid, 553 0, ~0, 1, 0); 554 } 555 } 556 } 557 } 558 559 free(children, M_TEMP); 560 561 isa_running = 1; 562 } 563 564 /* 565 * Add a new child with default ivars. 566 */ 567 static device_t 568 isa_add_child(device_t dev, int order, const char *name, int unit) 569 { 570 device_t child; 571 struct isa_device *idev; 572 573 child = device_add_child_ordered(dev, order, name, unit); 574 if (child == NULL) 575 return (child); 576 577 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT | M_ZERO); 578 if (!idev) 579 return (0); 580 581 resource_list_init(&idev->id_resources); 582 TAILQ_INIT(&idev->id_configs); 583 584 device_set_ivars(child, idev); 585 586 return (child); 587 } 588 589 static int 590 isa_print_all_resources(device_t dev) 591 { 592 struct isa_device *idev = DEVTOISA(dev); 593 struct resource_list *rl = &idev->id_resources; 594 int retval = 0; 595 596 if (STAILQ_FIRST(rl) || device_get_flags(dev)) 597 retval += printf(" at"); 598 599 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx"); 600 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx"); 601 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); 602 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld"); 603 if (device_get_flags(dev)) 604 retval += printf(" flags %#x", device_get_flags(dev)); 605 #ifdef ISAPNP 606 if (idev->id_vendorid) 607 retval += printf(" pnpid %s", pnp_eisaformat(idev->id_vendorid)); 608 #endif 609 610 return (retval); 611 } 612 613 static int 614 isa_print_child(device_t bus, device_t dev) 615 { 616 int retval = 0; 617 618 retval += bus_print_child_header(bus, dev); 619 retval += isa_print_all_resources(dev); 620 retval += bus_print_child_footer(bus, dev); 621 622 return (retval); 623 } 624 625 static void 626 isa_probe_nomatch(device_t dev, device_t child) 627 { 628 if (bootverbose) { 629 bus_print_child_header(dev, child); 630 printf(" failed to probe"); 631 isa_print_all_resources(child); 632 bus_print_child_footer(dev, child); 633 } 634 635 return; 636 } 637 638 static int 639 isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result) 640 { 641 struct isa_device* idev = DEVTOISA(dev); 642 struct resource_list *rl = &idev->id_resources; 643 struct resource_list_entry *rle; 644 645 switch (index) { 646 case ISA_IVAR_PORT_0: 647 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 648 if (rle) 649 *result = rle->start; 650 else 651 *result = -1; 652 break; 653 654 case ISA_IVAR_PORT_1: 655 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 656 if (rle) 657 *result = rle->start; 658 else 659 *result = -1; 660 break; 661 662 case ISA_IVAR_PORTSIZE_0: 663 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 664 if (rle) 665 *result = rle->count; 666 else 667 *result = 0; 668 break; 669 670 case ISA_IVAR_PORTSIZE_1: 671 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 672 if (rle) 673 *result = rle->count; 674 else 675 *result = 0; 676 break; 677 678 case ISA_IVAR_MADDR_0: 679 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 680 if (rle) 681 *result = rle->start; 682 else 683 *result = -1; 684 break; 685 686 case ISA_IVAR_MADDR_1: 687 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 688 if (rle) 689 *result = rle->start; 690 else 691 *result = -1; 692 break; 693 694 case ISA_IVAR_MEMSIZE_0: 695 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 696 if (rle) 697 *result = rle->count; 698 else 699 *result = 0; 700 break; 701 702 case ISA_IVAR_MEMSIZE_1: 703 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 704 if (rle) 705 *result = rle->count; 706 else 707 *result = 0; 708 break; 709 710 case ISA_IVAR_IRQ_0: 711 rle = resource_list_find(rl, SYS_RES_IRQ, 0); 712 if (rle) 713 *result = rle->start; 714 else 715 *result = -1; 716 break; 717 718 case ISA_IVAR_IRQ_1: 719 rle = resource_list_find(rl, SYS_RES_IRQ, 1); 720 if (rle) 721 *result = rle->start; 722 else 723 *result = -1; 724 break; 725 726 case ISA_IVAR_DRQ_0: 727 rle = resource_list_find(rl, SYS_RES_DRQ, 0); 728 if (rle) 729 *result = rle->start; 730 else 731 *result = -1; 732 break; 733 734 case ISA_IVAR_DRQ_1: 735 rle = resource_list_find(rl, SYS_RES_DRQ, 1); 736 if (rle) 737 *result = rle->start; 738 else 739 *result = -1; 740 break; 741 742 case ISA_IVAR_VENDORID: 743 *result = idev->id_vendorid; 744 break; 745 746 case ISA_IVAR_SERIAL: 747 *result = idev->id_serial; 748 break; 749 750 case ISA_IVAR_LOGICALID: 751 *result = idev->id_logicalid; 752 break; 753 754 case ISA_IVAR_COMPATID: 755 *result = idev->id_compatid; 756 break; 757 758 case ISA_IVAR_CONFIGATTR: 759 *result = idev->id_config_attr; 760 break; 761 762 case ISA_IVAR_PNP_CSN: 763 *result = idev->id_pnp_csn; 764 break; 765 766 case ISA_IVAR_PNP_LDN: 767 *result = idev->id_pnp_ldn; 768 break; 769 770 case ISA_IVAR_PNPBIOS_HANDLE: 771 *result = idev->id_pnpbios_handle; 772 break; 773 774 default: 775 return (ENOENT); 776 } 777 778 return (0); 779 } 780 781 static int 782 isa_write_ivar(device_t bus, device_t dev, int index, uintptr_t value) 783 { 784 struct isa_device* idev = DEVTOISA(dev); 785 786 switch (index) { 787 case ISA_IVAR_PORT_0: 788 case ISA_IVAR_PORT_1: 789 case ISA_IVAR_PORTSIZE_0: 790 case ISA_IVAR_PORTSIZE_1: 791 case ISA_IVAR_MADDR_0: 792 case ISA_IVAR_MADDR_1: 793 case ISA_IVAR_MEMSIZE_0: 794 case ISA_IVAR_MEMSIZE_1: 795 case ISA_IVAR_IRQ_0: 796 case ISA_IVAR_IRQ_1: 797 case ISA_IVAR_DRQ_0: 798 case ISA_IVAR_DRQ_1: 799 return (EINVAL); 800 801 case ISA_IVAR_VENDORID: 802 idev->id_vendorid = value; 803 break; 804 805 case ISA_IVAR_SERIAL: 806 idev->id_serial = value; 807 break; 808 809 case ISA_IVAR_LOGICALID: 810 idev->id_logicalid = value; 811 break; 812 813 case ISA_IVAR_COMPATID: 814 idev->id_compatid = value; 815 break; 816 817 case ISA_IVAR_CONFIGATTR: 818 idev->id_config_attr = value; 819 break; 820 821 default: 822 return (ENOENT); 823 } 824 825 return (0); 826 } 827 828 /* 829 * Free any resources which the driver missed or which we were holding for 830 * it (see isa_probe_children). 831 */ 832 static void 833 isa_child_detached(device_t dev, device_t child) 834 { 835 struct isa_device* idev = DEVTOISA(child); 836 struct resource_list *rl = &idev->id_resources; 837 struct resource_list_entry *rle; 838 839 if (TAILQ_FIRST(&idev->id_configs)) { 840 /* 841 * Claim any unallocated resources to keep other 842 * devices from using them. 843 */ 844 STAILQ_FOREACH(rle, rl, link) { 845 if (!rle->res) { 846 int rid = rle->rid; 847 resource_list_alloc(rl, dev, child, 848 rle->type, 849 &rid, 0, ~0, 1, 0); 850 } 851 } 852 } 853 } 854 855 static void 856 isa_driver_added(device_t dev, driver_t *driver) 857 { 858 device_t *children; 859 int nchildren, i; 860 861 /* 862 * Don't do anything if drivers are dynamically 863 * added during autoconfiguration (cf. ymf724). 864 * since that would end up calling identify 865 * twice. 866 */ 867 if (!isa_running) 868 return; 869 870 DEVICE_IDENTIFY(driver, dev); 871 if (device_get_children(dev, &children, &nchildren)) 872 return; 873 874 for (i = 0; i < nchildren; i++) { 875 device_t child = children[i]; 876 struct isa_device *idev = DEVTOISA(child); 877 struct resource_list *rl = &idev->id_resources; 878 struct resource_list_entry *rle; 879 880 if (device_get_state(child) != DS_NOTPRESENT) 881 continue; 882 if (!device_is_enabled(child)) 883 continue; 884 885 /* 886 * Free resources which we were holding on behalf of 887 * the device. 888 */ 889 STAILQ_FOREACH(rle, &idev->id_resources, link) { 890 if (rle->res) 891 resource_list_release(rl, dev, child, 892 rle->type, 893 rle->rid, 894 rle->res); 895 } 896 897 if (TAILQ_FIRST(&idev->id_configs)) 898 if (!isa_assign_resources(child)) 899 continue; 900 901 device_probe_and_attach(child); 902 903 if (TAILQ_FIRST(&idev->id_configs)) { 904 /* 905 * Claim any unallocated resources to keep other 906 * devices from using them. 907 */ 908 STAILQ_FOREACH(rle, rl, link) { 909 if (!rle->res) { 910 int rid = rle->rid; 911 resource_list_alloc(rl, dev, child, 912 rle->type, 913 &rid, 0, ~0, 1, 0); 914 } 915 } 916 } 917 } 918 919 free(children, M_TEMP); 920 } 921 922 static int 923 isa_set_resource(device_t dev, device_t child, int type, int rid, 924 u_long start, u_long count) 925 { 926 struct isa_device* idev = DEVTOISA(child); 927 struct resource_list *rl = &idev->id_resources; 928 929 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY 930 && type != SYS_RES_IRQ && type != SYS_RES_DRQ) 931 return (EINVAL); 932 if (rid < 0) 933 return (EINVAL); 934 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT) 935 return (EINVAL); 936 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM) 937 return (EINVAL); 938 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ) 939 return (EINVAL); 940 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ) 941 return (EINVAL); 942 943 resource_list_add(rl, type, rid, start, start + count - 1, count); 944 945 return (0); 946 } 947 948 static struct resource_list * 949 isa_get_resource_list (device_t dev, device_t child) 950 { 951 struct isa_device* idev = DEVTOISA(child); 952 struct resource_list *rl = &idev->id_resources; 953 954 if (!rl) 955 return (NULL); 956 957 return (rl); 958 } 959 960 static int 961 isa_add_config(device_t dev, device_t child, int priority, 962 struct isa_config *config) 963 { 964 struct isa_device* idev = DEVTOISA(child); 965 struct isa_config_entry *newice, *ice; 966 967 newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT); 968 if (!newice) 969 return (ENOMEM); 970 971 newice->ice_priority = priority; 972 newice->ice_config = *config; 973 974 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 975 if (ice->ice_priority > priority) 976 break; 977 } 978 if (ice) 979 TAILQ_INSERT_BEFORE(ice, newice, ice_link); 980 else 981 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link); 982 983 return (0); 984 } 985 986 static void 987 isa_set_config_callback(device_t dev, device_t child, isa_config_cb *fn, 988 void *arg) 989 { 990 struct isa_device* idev = DEVTOISA(child); 991 992 idev->id_config_cb = fn; 993 idev->id_config_arg = arg; 994 } 995 996 static int 997 isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids) 998 { 999 struct isa_device* idev = DEVTOISA(child); 1000 1001 if (!idev->id_vendorid) 1002 return (ENOENT); 1003 1004 while (ids && ids->ip_id) { 1005 /* 1006 * Really ought to support >1 compat id per device. 1007 */ 1008 if (idev->id_logicalid == ids->ip_id 1009 || idev->id_compatid == ids->ip_id) { 1010 if (ids->ip_desc) 1011 device_set_desc(child, ids->ip_desc); 1012 return (0); 1013 } 1014 ids++; 1015 } 1016 1017 return (ENXIO); 1018 } 1019 1020 static int 1021 isa_child_pnpinfo_str(device_t bus, device_t child, char *buf, 1022 size_t buflen) 1023 { 1024 #ifdef ISAPNP 1025 struct isa_device *idev = DEVTOISA(child); 1026 1027 if (idev->id_vendorid) 1028 snprintf(buf, buflen, "pnpid=%s", 1029 pnp_eisaformat(idev->id_vendorid)); 1030 #endif 1031 return (0); 1032 } 1033 1034 static int 1035 isa_child_location_str(device_t bus, device_t child, char *buf, 1036 size_t buflen) 1037 { 1038 #if 0 1039 /* id_pnphandle isn't there yet */ 1040 struct isa_device *idev = DEVTOISA(child); 1041 1042 if (idev->id_vendorid) 1043 snprintf(buf, buflen, "pnphandle=%d", idev->id_pnphandle); 1044 #endif 1045 /* Nothing here yet */ 1046 *buf = '\0'; 1047 return (0); 1048 } 1049 1050 static device_method_t isa_methods[] = { 1051 /* Device interface */ 1052 DEVMETHOD(device_probe, isa_probe), 1053 DEVMETHOD(device_attach, isa_attach), 1054 DEVMETHOD(device_detach, bus_generic_detach), 1055 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1056 DEVMETHOD(device_suspend, bus_generic_suspend), 1057 DEVMETHOD(device_resume, bus_generic_resume), 1058 1059 /* Bus interface */ 1060 DEVMETHOD(bus_add_child, isa_add_child), 1061 DEVMETHOD(bus_print_child, isa_print_child), 1062 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch), 1063 DEVMETHOD(bus_read_ivar, isa_read_ivar), 1064 DEVMETHOD(bus_write_ivar, isa_write_ivar), 1065 DEVMETHOD(bus_child_detached, isa_child_detached), 1066 DEVMETHOD(bus_driver_added, isa_driver_added), 1067 DEVMETHOD(bus_setup_intr, isa_setup_intr), 1068 DEVMETHOD(bus_teardown_intr, isa_teardown_intr), 1069 1070 DEVMETHOD(bus_get_resource_list,isa_get_resource_list), 1071 DEVMETHOD(bus_alloc_resource, isa_alloc_resource), 1072 DEVMETHOD(bus_release_resource, isa_release_resource), 1073 DEVMETHOD(bus_set_resource, isa_set_resource), 1074 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 1075 DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource), 1076 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 1077 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 1078 DEVMETHOD(bus_child_pnpinfo_str, isa_child_pnpinfo_str), 1079 DEVMETHOD(bus_child_location_str, isa_child_location_str), 1080 1081 /* ISA interface */ 1082 DEVMETHOD(isa_add_config, isa_add_config), 1083 DEVMETHOD(isa_set_config_callback, isa_set_config_callback), 1084 DEVMETHOD(isa_pnp_probe, isa_pnp_probe), 1085 1086 { 0, 0 } 1087 }; 1088 1089 driver_t isa_driver = { 1090 "isa", 1091 isa_methods, 1092 1, /* no softc */ 1093 }; 1094 1095 devclass_t isa_devclass; 1096 1097 /* 1098 * ISA can be attached to a PCI-ISA bridge, or other locations on some 1099 * platforms. 1100 */ 1101 DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0); 1102 DRIVER_MODULE(isa, eisab, isa_driver, isa_devclass, 0, 0); 1103 MODULE_VERSION(isa, 1); 1104 1105 /* 1106 * Code common to ISA bridges. 1107 */ 1108 1109 devclass_t isab_devclass; 1110 1111 int 1112 isab_attach(device_t dev) 1113 { 1114 device_t child; 1115 1116 child = device_add_child(dev, "isa", 0); 1117 if (child != NULL) 1118 return (bus_generic_attach(dev)); 1119 return (ENXIO); 1120 } 1121