isa_common.c revision 69295
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 * $FreeBSD: head/sys/isa/isa_common.c 69295 2000-11-28 07:12:12Z mdodd $ 27 */ 28/* 29 * Modifications for Intel architecture by Garrett A. Wollman. 30 * Copyright 1998 Massachusetts Institute of Technology 31 * 32 * Permission to use, copy, modify, and distribute this software and 33 * its documentation for any purpose and without fee is hereby 34 * granted, provided that both the above copyright notice and this 35 * permission notice appear in all copies, that both the above 36 * copyright notice and this permission notice appear in all 37 * supporting documentation, and that the name of M.I.T. not be used 38 * in advertising or publicity pertaining to distribution of the 39 * software without specific, written prior permission. M.I.T. makes 40 * no representations about the suitability of this software for any 41 * purpose. It is provided "as is" without express or implied 42 * warranty. 43 * 44 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 45 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 46 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 47 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 48 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 49 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 50 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 51 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 52 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 53 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 54 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57 58/* 59 * Parts of the ISA bus implementation common to all architectures. 60 */ 61 62#include <sys/param.h> 63#include <sys/systm.h> 64#include <sys/kernel.h> 65#include <sys/bus.h> 66#include <sys/malloc.h> 67#include <sys/module.h> 68#include <machine/bus.h> 69#include <sys/rman.h> 70 71#include <machine/resource.h> 72 73#include <isa/isavar.h> 74#include <isa/isa_common.h> 75#ifdef __alpha__ /* XXX workaround a stupid warning */ 76#include <alpha/isa/isavar.h> 77#endif 78 79static int isa_print_child(device_t bus, device_t dev); 80 81MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device"); 82 83static devclass_t isa_devclass; 84static int isa_running; 85 86/* 87 * At 'probe' time, we add all the devices which we know about to the 88 * bus. The generic attach routine will probe and attach them if they 89 * are alive. 90 */ 91static int 92isa_probe(device_t dev) 93{ 94 device_set_desc(dev, "ISA bus"); 95 isa_init(); /* Allow machdep code to initialise */ 96 return 0; 97} 98 99extern device_t isa_bus_device; 100 101static int 102isa_attach(device_t dev) 103{ 104 /* 105 * Arrange for isa_probe_children(dev) to be called later. XXX 106 */ 107 isa_bus_device = dev; 108 return 0; 109} 110 111/* 112 * Find a working set of memory regions for a child using the ranges 113 * in *config and return the regions in *result. Returns non-zero if 114 * a set of ranges was found. 115 */ 116static int 117isa_find_memory(device_t child, 118 struct isa_config *config, 119 struct isa_config *result) 120{ 121 int success, i; 122 struct resource *res[ISA_NMEM]; 123 124 /* 125 * First clear out any existing resource definitions. 126 */ 127 for (i = 0; i < ISA_NMEM; i++) { 128 bus_delete_resource(child, SYS_RES_MEMORY, i); 129 res[i] = NULL; 130 } 131 132 success = 1; 133 result->ic_nmem = config->ic_nmem; 134 for (i = 0; i < config->ic_nmem; i++) { 135 u_int32_t start, end, size, align; 136 for (start = config->ic_mem[i].ir_start, 137 end = config->ic_mem[i].ir_end, 138 size = config->ic_mem[i].ir_size, 139 align = config->ic_mem[i].ir_align; 140 start + size - 1 <= end; 141 start += align) { 142 bus_set_resource(child, SYS_RES_MEMORY, i, 143 start, size); 144 res[i] = bus_alloc_resource(child, 145 SYS_RES_MEMORY, &i, 146 0, ~0, 1, 0 /* !RF_ACTIVE */); 147 if (res[i]) { 148 result->ic_mem[i].ir_start = start; 149 result->ic_mem[i].ir_end = start + size - 1; 150 result->ic_mem[i].ir_size = size; 151 result->ic_mem[i].ir_align = align; 152 break; 153 } 154 } 155 156 /* 157 * If we didn't find a place for memory range i, then 158 * give up now. 159 */ 160 if (!res[i]) { 161 success = 0; 162 break; 163 } 164 } 165 166 for (i = 0; i < ISA_NMEM; i++) { 167 if (res[i]) 168 bus_release_resource(child, SYS_RES_MEMORY, 169 i, res[i]); 170 } 171 172 return success; 173} 174 175/* 176 * Find a working set of port regions for a child using the ranges 177 * in *config and return the regions in *result. Returns non-zero if 178 * a set of ranges was found. 179 */ 180static int 181isa_find_port(device_t child, 182 struct isa_config *config, 183 struct isa_config *result) 184{ 185 int success, i; 186 struct resource *res[ISA_NPORT]; 187 188 /* 189 * First clear out any existing resource definitions. 190 */ 191 for (i = 0; i < ISA_NPORT; i++) { 192 bus_delete_resource(child, SYS_RES_IOPORT, i); 193 res[i] = NULL; 194 } 195 196 success = 1; 197 result->ic_nport = config->ic_nport; 198 for (i = 0; i < config->ic_nport; i++) { 199 u_int32_t start, end, size, align; 200 for (start = config->ic_port[i].ir_start, 201 end = config->ic_port[i].ir_end, 202 size = config->ic_port[i].ir_size, 203 align = config->ic_port[i].ir_align; 204 start + size - 1 <= end; 205 start += align) { 206 bus_set_resource(child, SYS_RES_IOPORT, i, 207 start, size); 208 res[i] = bus_alloc_resource(child, 209 SYS_RES_IOPORT, &i, 210 0, ~0, 1, 0 /* !RF_ACTIVE */); 211 if (res[i]) { 212 result->ic_port[i].ir_start = start; 213 result->ic_port[i].ir_end = start + size - 1; 214 result->ic_port[i].ir_size = size; 215 result->ic_port[i].ir_align = align; 216 break; 217 } 218 } 219 220 /* 221 * If we didn't find a place for port range i, then 222 * give up now. 223 */ 224 if (!res[i]) { 225 success = 0; 226 break; 227 } 228 } 229 230 for (i = 0; i < ISA_NPORT; i++) { 231 if (res[i]) 232 bus_release_resource(child, SYS_RES_IOPORT, 233 i, res[i]); 234 } 235 236 return success; 237} 238 239/* 240 * Return the index of the first bit in the mask (or -1 if mask is empty. 241 */ 242static int 243find_first_bit(u_int32_t mask) 244{ 245 return ffs(mask) - 1; 246} 247 248/* 249 * Return the index of the next bit in the mask, or -1 if there are no more. 250 */ 251static int 252find_next_bit(u_int32_t mask, int bit) 253{ 254 bit++; 255 while (bit < 32 && !(mask & (1 << bit))) 256 bit++; 257 if (bit != 32) 258 return bit; 259 return -1; 260} 261 262/* 263 * Find a working set of irqs for a child using the masks in *config 264 * and return the regions in *result. Returns non-zero if a set of 265 * irqs was found. 266 */ 267static int 268isa_find_irq(device_t child, 269 struct isa_config *config, 270 struct isa_config *result) 271{ 272 int success, i; 273 struct resource *res[ISA_NIRQ]; 274 275 /* 276 * First clear out any existing resource definitions. 277 */ 278 for (i = 0; i < ISA_NIRQ; i++) { 279 bus_delete_resource(child, SYS_RES_IRQ, i); 280 res[i] = NULL; 281 } 282 283 success = 1; 284 result->ic_nirq = config->ic_nirq; 285 for (i = 0; i < config->ic_nirq; i++) { 286 u_int32_t mask = config->ic_irqmask[i]; 287 int irq; 288 for (irq = find_first_bit(mask); 289 irq != -1; 290 irq = find_next_bit(mask, irq)) { 291 bus_set_resource(child, SYS_RES_IRQ, i, 292 irq, 1); 293 res[i] = bus_alloc_resource(child, 294 SYS_RES_IRQ, &i, 295 0, ~0, 1, 0 /* !RF_ACTIVE */ ); 296 if (res[i]) { 297 result->ic_irqmask[i] = (1 << irq); 298 break; 299 } 300 } 301 302 /* 303 * If we didn't find a place for irq range i, then 304 * give up now. 305 */ 306 if (!res[i]) { 307 success = 0; 308 break; 309 } 310 } 311 312 for (i = 0; i < ISA_NIRQ; i++) { 313 if (res[i]) 314 bus_release_resource(child, SYS_RES_IRQ, 315 i, res[i]); 316 } 317 318 return success; 319} 320 321/* 322 * Find a working set of drqs for a child using the masks in *config 323 * and return the regions in *result. Returns non-zero if a set of 324 * drqs was found. 325 */ 326static int 327isa_find_drq(device_t child, 328 struct isa_config *config, 329 struct isa_config *result) 330{ 331 int success, i; 332 struct resource *res[ISA_NDRQ]; 333 334 /* 335 * First clear out any existing resource definitions. 336 */ 337 for (i = 0; i < ISA_NDRQ; i++) { 338 bus_delete_resource(child, SYS_RES_DRQ, i); 339 res[i] = NULL; 340 } 341 342 success = 1; 343 result->ic_ndrq = config->ic_ndrq; 344 for (i = 0; i < config->ic_ndrq; i++) { 345 u_int32_t mask = config->ic_drqmask[i]; 346 int drq; 347 for (drq = find_first_bit(mask); 348 drq != -1; 349 drq = find_next_bit(mask, drq)) { 350 bus_set_resource(child, SYS_RES_DRQ, i, 351 drq, 1); 352 res[i] = bus_alloc_resource(child, 353 SYS_RES_DRQ, &i, 354 0, ~0, 1, 0 /* !RF_ACTIVE */); 355 if (res[i]) { 356 result->ic_drqmask[i] = (1 << drq); 357 break; 358 } 359 } 360 361 /* 362 * If we didn't find a place for drq range i, then 363 * give up now. 364 */ 365 if (!res[i]) { 366 success = 0; 367 break; 368 } 369 } 370 371 for (i = 0; i < ISA_NDRQ; i++) { 372 if (res[i]) 373 bus_release_resource(child, SYS_RES_DRQ, 374 i, res[i]); 375 } 376 377 return success; 378} 379 380/* 381 * Attempt to find a working set of resources for a device. Return 382 * non-zero if a working configuration is found. 383 */ 384static int 385isa_assign_resources(device_t child) 386{ 387 struct isa_device *idev = DEVTOISA(child); 388 struct isa_config_entry *ice; 389 struct isa_config config; 390 391 bzero(&config, sizeof config); 392 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 393 if (!isa_find_memory(child, &ice->ice_config, &config)) 394 continue; 395 if (!isa_find_port(child, &ice->ice_config, &config)) 396 continue; 397 if (!isa_find_irq(child, &ice->ice_config, &config)) 398 continue; 399 if (!isa_find_drq(child, &ice->ice_config, &config)) 400 continue; 401 402 /* 403 * A working configuration was found enable the device 404 * with this configuration. 405 */ 406 if (idev->id_config_cb) { 407 idev->id_config_cb(idev->id_config_arg, 408 &config, 1); 409 return 1; 410 } 411 } 412 413 /* 414 * Disable the device. 415 */ 416 bus_print_child_header(device_get_parent(child), child); 417 printf(" can't assign resources\n"); 418 if (bootverbose) 419 isa_print_child(device_get_parent(child), child); 420 bzero(&config, sizeof config); 421 if (idev->id_config_cb) 422 idev->id_config_cb(idev->id_config_arg, &config, 0); 423 device_disable(child); 424 425 return 0; 426} 427 428/* 429 * Called after other devices have initialised to probe for isa devices. 430 */ 431void 432isa_probe_children(device_t dev) 433{ 434 device_t *children; 435 int nchildren, i; 436 437 /* 438 * Create all the children by calling driver's identify methods. 439 */ 440 bus_generic_probe(dev); 441 442 if (device_get_children(dev, &children, &nchildren)) 443 return; 444 445 /* 446 * First disable all pnp devices so that they don't get 447 * matched by legacy probes. 448 */ 449 if (bootverbose) 450 printf("isa_probe_children: disabling PnP devices\n"); 451 for (i = 0; i < nchildren; i++) { 452 device_t child = children[i]; 453 struct isa_device *idev = DEVTOISA(child); 454 struct isa_config config; 455 456 bzero(&config, sizeof config); 457 if (idev->id_config_cb) 458 idev->id_config_cb(idev->id_config_arg, &config, 0); 459 } 460 461 /* 462 * Next probe all non-pnp devices so that they claim their 463 * resources first. 464 */ 465 if (bootverbose) 466 printf("isa_probe_children: probing non-PnP devices\n"); 467 for (i = 0; i < nchildren; i++) { 468 device_t child = children[i]; 469 struct isa_device *idev = DEVTOISA(child); 470 471 if (TAILQ_FIRST(&idev->id_configs)) 472 continue; 473 474 device_probe_and_attach(child); 475 } 476 477 /* 478 * Finally assign resource to pnp devices and probe them. 479 */ 480 if (bootverbose) 481 printf("isa_probe_children: probing PnP devices\n"); 482 for (i = 0; i < nchildren; i++) { 483 device_t child = children[i]; 484 struct isa_device* idev = DEVTOISA(child); 485 486 if (!TAILQ_FIRST(&idev->id_configs)) 487 continue; 488 489 if (isa_assign_resources(child)) { 490 struct resource_list *rl = &idev->id_resources; 491 struct resource_list_entry *rle; 492 493 device_probe_and_attach(child); 494 495 /* 496 * Claim any unallocated resources to keep other 497 * devices from using them. 498 */ 499 SLIST_FOREACH(rle, rl, link) { 500 if (!rle->res) { 501 int rid = rle->rid; 502 resource_list_alloc(rl, dev, child, 503 rle->type, 504 &rid, 505 0, ~0, 1, 0); 506 } 507 } 508 } 509 } 510 511 free(children, M_TEMP); 512 513 isa_running = 1; 514} 515 516/* 517 * Add a new child with default ivars. 518 */ 519static device_t 520isa_add_child(device_t dev, int order, const char *name, int unit) 521{ 522 device_t child; 523 struct isa_device *idev; 524 525 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT); 526 if (!idev) 527 return 0; 528 bzero(idev, sizeof *idev); 529 530 resource_list_init(&idev->id_resources); 531 TAILQ_INIT(&idev->id_configs); 532 533 child = device_add_child_ordered(dev, order, name, unit); 534 device_set_ivars(child, idev); 535 536 return child; 537} 538 539static int 540isa_print_resources(struct resource_list *rl, const char *name, int type, 541 int count, const char *format) 542{ 543 struct resource_list_entry *rle; 544 int printed; 545 int i, retval = 0;; 546 547 printed = 0; 548 for (i = 0; i < count; i++) { 549 rle = resource_list_find(rl, type, i); 550 if (rle) { 551 if (printed == 0) 552 retval += printf(" %s ", name); 553 else if (printed > 0) 554 retval += printf(","); 555 printed++; 556 retval += printf(format, rle->start); 557 if (rle->count > 1) { 558 retval += printf("-"); 559 retval += printf(format, 560 rle->start + rle->count - 1); 561 } 562 } else if (i > 3) { 563 /* check the first few regardless */ 564 break; 565 } 566 } 567 return retval; 568} 569 570static int 571isa_print_all_resources(device_t dev) 572{ 573 struct isa_device *idev = DEVTOISA(dev); 574 struct resource_list *rl = &idev->id_resources; 575 int retval = 0; 576 577 if (SLIST_FIRST(rl) || device_get_flags(dev)) 578 retval += printf(" at"); 579 580 retval += isa_print_resources(rl, "port", SYS_RES_IOPORT, 581 ISA_NPORT, "%#lx"); 582 retval += isa_print_resources(rl, "iomem", SYS_RES_MEMORY, 583 ISA_NMEM, "%#lx"); 584 retval += isa_print_resources(rl, "irq", SYS_RES_IRQ, 585 ISA_NIRQ, "%ld"); 586 retval += isa_print_resources(rl, "drq", SYS_RES_DRQ, 587 ISA_NDRQ, "%ld"); 588 if (device_get_flags(dev)) 589 retval += printf(" flags %#x", device_get_flags(dev)); 590 591 return retval; 592} 593 594static int 595isa_print_child(device_t bus, device_t dev) 596{ 597 int retval = 0; 598 599 retval += bus_print_child_header(bus, dev); 600 retval += isa_print_all_resources(dev); 601 retval += bus_print_child_footer(bus, dev); 602 603 return (retval); 604} 605 606static void 607isa_probe_nomatch(device_t dev, device_t child) 608{ 609 if (bootverbose) { 610 bus_print_child_header(dev, child); 611 printf(" failed to probe"); 612 isa_print_all_resources(child); 613 bus_print_child_footer(dev, child); 614 } 615 616 return; 617} 618 619static int 620isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result) 621{ 622 struct isa_device* idev = DEVTOISA(dev); 623 struct resource_list *rl = &idev->id_resources; 624 struct resource_list_entry *rle; 625 626 switch (index) { 627 case ISA_IVAR_PORT_0: 628 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 629 if (rle) 630 *result = rle->start; 631 else 632 *result = -1; 633 break; 634 635 case ISA_IVAR_PORT_1: 636 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 637 if (rle) 638 *result = rle->start; 639 else 640 *result = -1; 641 break; 642 643 case ISA_IVAR_PORTSIZE_0: 644 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 645 if (rle) 646 *result = rle->count; 647 else 648 *result = 0; 649 break; 650 651 case ISA_IVAR_PORTSIZE_1: 652 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 653 if (rle) 654 *result = rle->count; 655 else 656 *result = 0; 657 break; 658 659 case ISA_IVAR_MADDR_0: 660 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 661 if (rle) 662 *result = rle->start; 663 else 664 *result = -1; 665 break; 666 667 case ISA_IVAR_MADDR_1: 668 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 669 if (rle) 670 *result = rle->start; 671 else 672 *result = -1; 673 break; 674 675 case ISA_IVAR_MSIZE_0: 676 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 677 if (rle) 678 *result = rle->count; 679 else 680 *result = 0; 681 break; 682 683 case ISA_IVAR_MSIZE_1: 684 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 685 if (rle) 686 *result = rle->count; 687 else 688 *result = 0; 689 break; 690 691 case ISA_IVAR_IRQ_0: 692 rle = resource_list_find(rl, SYS_RES_IRQ, 0); 693 if (rle) 694 *result = rle->start; 695 else 696 *result = -1; 697 break; 698 699 case ISA_IVAR_IRQ_1: 700 rle = resource_list_find(rl, SYS_RES_IRQ, 1); 701 if (rle) 702 *result = rle->start; 703 else 704 *result = -1; 705 break; 706 707 case ISA_IVAR_DRQ_0: 708 rle = resource_list_find(rl, SYS_RES_DRQ, 0); 709 if (rle) 710 *result = rle->start; 711 else 712 *result = -1; 713 break; 714 715 case ISA_IVAR_DRQ_1: 716 rle = resource_list_find(rl, SYS_RES_DRQ, 1); 717 if (rle) 718 *result = rle->start; 719 else 720 *result = -1; 721 break; 722 723 case ISA_IVAR_VENDORID: 724 *result = idev->id_vendorid; 725 break; 726 727 case ISA_IVAR_SERIAL: 728 *result = idev->id_serial; 729 break; 730 731 case ISA_IVAR_LOGICALID: 732 *result = idev->id_logicalid; 733 break; 734 735 case ISA_IVAR_COMPATID: 736 *result = idev->id_compatid; 737 break; 738 739 default: 740 return ENOENT; 741 } 742 743 return 0; 744} 745 746static int 747isa_write_ivar(device_t bus, device_t dev, 748 int index, uintptr_t value) 749{ 750 struct isa_device* idev = DEVTOISA(dev); 751 752 switch (index) { 753 case ISA_IVAR_PORT_0: 754 case ISA_IVAR_PORT_1: 755 case ISA_IVAR_PORTSIZE_0: 756 case ISA_IVAR_PORTSIZE_1: 757 case ISA_IVAR_MADDR_0: 758 case ISA_IVAR_MADDR_1: 759 case ISA_IVAR_MSIZE_0: 760 case ISA_IVAR_MSIZE_1: 761 case ISA_IVAR_IRQ_0: 762 case ISA_IVAR_IRQ_1: 763 case ISA_IVAR_DRQ_0: 764 case ISA_IVAR_DRQ_1: 765 return EINVAL; 766 767 case ISA_IVAR_VENDORID: 768 idev->id_vendorid = value; 769 break; 770 771 case ISA_IVAR_SERIAL: 772 idev->id_serial = value; 773 break; 774 775 case ISA_IVAR_LOGICALID: 776 idev->id_logicalid = value; 777 break; 778 779 case ISA_IVAR_COMPATID: 780 idev->id_compatid = value; 781 break; 782 783 default: 784 return (ENOENT); 785 } 786 787 return (0); 788} 789 790/* 791 * Free any resources which the driver missed or which we were holding for 792 * it (see isa_probe_children). 793 */ 794static void 795isa_child_detached(device_t dev, device_t child) 796{ 797 struct isa_device* idev = DEVTOISA(child); 798 struct resource_list *rl = &idev->id_resources; 799 struct resource_list_entry *rle; 800 801 if (TAILQ_FIRST(&idev->id_configs)) { 802 /* 803 * Claim any unallocated resources to keep other 804 * devices from using them. 805 */ 806 SLIST_FOREACH(rle, rl, link) { 807 if (!rle->res) { 808 int rid = rle->rid; 809 resource_list_alloc(rl, dev, child, 810 rle->type, 811 &rid, 0, ~0, 1, 0); 812 } 813 } 814 } 815} 816 817static void 818isa_driver_added(device_t dev, driver_t *driver) 819{ 820 device_t *children; 821 int nchildren, i; 822 823 /* 824 * Don't do anything if drivers are dynamically 825 * added during autoconfiguration (cf. ymf724). 826 * since that would end up calling identify 827 * twice. 828 */ 829 if (!isa_running) 830 return; 831 832 DEVICE_IDENTIFY(driver, dev); 833 if (device_get_children(dev, &children, &nchildren)) 834 return; 835 836 for (i = 0; i < nchildren; i++) { 837 device_t child = children[i]; 838 struct isa_device *idev = DEVTOISA(child); 839 struct resource_list *rl = &idev->id_resources; 840 struct resource_list_entry *rle; 841 842 if (device_get_state(child) != DS_NOTPRESENT) 843 continue; 844 if (!device_is_enabled(child)) 845 continue; 846 847 /* 848 * Free resources which we were holding on behalf of 849 * the device. 850 */ 851 SLIST_FOREACH(rle, &idev->id_resources, link) { 852 if (rle->res) 853 resource_list_release(rl, dev, child, 854 rle->type, 855 rle->rid, 856 rle->res); 857 } 858 859 if (TAILQ_FIRST(&idev->id_configs)) 860 if (!isa_assign_resources(child)) 861 continue; 862 863 device_probe_and_attach(child); 864 865 if (TAILQ_FIRST(&idev->id_configs)) { 866 /* 867 * Claim any unallocated resources to keep other 868 * devices from using them. 869 */ 870 SLIST_FOREACH(rle, rl, link) { 871 if (!rle->res) { 872 int rid = rle->rid; 873 resource_list_alloc(rl, dev, child, 874 rle->type, 875 &rid, 0, ~0, 1, 0); 876 } 877 } 878 } 879 } 880 881 free(children, M_TEMP); 882} 883 884static int 885isa_set_resource(device_t dev, device_t child, int type, int rid, 886 u_long start, u_long count) 887{ 888 struct isa_device* idev = DEVTOISA(child); 889 struct resource_list *rl = &idev->id_resources; 890 891 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY 892 && type != SYS_RES_IRQ && type != SYS_RES_DRQ) 893 return EINVAL; 894 if (rid < 0) 895 return EINVAL; 896 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT) 897 return EINVAL; 898 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM) 899 return EINVAL; 900 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ) 901 return EINVAL; 902 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ) 903 return EINVAL; 904 905 resource_list_add(rl, type, rid, start, start + count - 1, count); 906 907 return 0; 908} 909 910static struct resource_list * 911isa_get_resource_list (device_t dev, device_t child) 912{ 913 struct isa_device* idev = DEVTOISA(child); 914 struct resource_list *rl = &idev->id_resources; 915 916 if (!rl) 917 return (NULL); 918 919 return (rl); 920} 921 922static int 923isa_add_config(device_t dev, device_t child, 924 int priority, struct isa_config *config) 925{ 926 struct isa_device* idev = DEVTOISA(child); 927 struct isa_config_entry *newice, *ice; 928 929 newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT); 930 if (!newice) 931 return ENOMEM; 932 933 newice->ice_priority = priority; 934 newice->ice_config = *config; 935 936 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 937 if (ice->ice_priority > priority) 938 break; 939 } 940 if (ice) 941 TAILQ_INSERT_BEFORE(ice, newice, ice_link); 942 else 943 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link); 944 945 return 0; 946} 947 948static void 949isa_set_config_callback(device_t dev, device_t child, 950 isa_config_cb *fn, void *arg) 951{ 952 struct isa_device* idev = DEVTOISA(child); 953 954 idev->id_config_cb = fn; 955 idev->id_config_arg = arg; 956} 957 958static int 959isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids) 960{ 961 struct isa_device* idev = DEVTOISA(child); 962 963 if (!idev->id_vendorid) 964 return ENOENT; 965 966 while (ids->ip_id) { 967 /* 968 * Really ought to support >1 compat id per device. 969 */ 970 if (idev->id_logicalid == ids->ip_id 971 || idev->id_compatid == ids->ip_id) { 972 if (ids->ip_desc) 973 device_set_desc(child, ids->ip_desc); 974 return 0; 975 } 976 ids++; 977 } 978 979 return ENXIO; 980} 981 982static device_method_t isa_methods[] = { 983 /* Device interface */ 984 DEVMETHOD(device_probe, isa_probe), 985 DEVMETHOD(device_attach, isa_attach), 986 DEVMETHOD(device_detach, bus_generic_detach), 987 DEVMETHOD(device_shutdown, bus_generic_shutdown), 988 DEVMETHOD(device_suspend, bus_generic_suspend), 989 DEVMETHOD(device_resume, bus_generic_resume), 990 991 /* Bus interface */ 992 DEVMETHOD(bus_add_child, isa_add_child), 993 DEVMETHOD(bus_print_child, isa_print_child), 994 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch), 995 DEVMETHOD(bus_read_ivar, isa_read_ivar), 996 DEVMETHOD(bus_write_ivar, isa_write_ivar), 997 DEVMETHOD(bus_child_detached, isa_child_detached), 998 DEVMETHOD(bus_driver_added, isa_driver_added), 999 DEVMETHOD(bus_setup_intr, isa_setup_intr), 1000 DEVMETHOD(bus_teardown_intr, isa_teardown_intr), 1001 1002 DEVMETHOD(bus_get_resource_list,isa_get_resource_list), 1003 DEVMETHOD(bus_alloc_resource, isa_alloc_resource), 1004 DEVMETHOD(bus_release_resource, isa_release_resource), 1005 DEVMETHOD(bus_set_resource, isa_set_resource), 1006 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 1007 DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource), 1008 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 1009 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 1010 1011 /* ISA interface */ 1012 DEVMETHOD(isa_add_config, isa_add_config), 1013 DEVMETHOD(isa_set_config_callback, isa_set_config_callback), 1014 DEVMETHOD(isa_pnp_probe, isa_pnp_probe), 1015 1016 { 0, 0 } 1017}; 1018 1019static driver_t isa_driver = { 1020 "isa", 1021 isa_methods, 1022 1, /* no softc */ 1023}; 1024 1025/* 1026 * ISA can be attached to a PCI-ISA bridge or directly to the nexus. 1027 */ 1028DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0); 1029#ifdef __i386__ 1030DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0); 1031#endif 1032