isa_common.c revision 82553
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 82553 2001-08-30 09:14:28Z msmith $ 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 81static MALLOC_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 *cfg; 390 391 cfg = malloc(sizeof(struct isa_config), M_TEMP, M_NOWAIT|M_ZERO); 392 if (cfg == NULL) 393 return(0); 394 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 395 if (!isa_find_memory(child, &ice->ice_config, cfg)) 396 continue; 397 if (!isa_find_port(child, &ice->ice_config, cfg)) 398 continue; 399 if (!isa_find_irq(child, &ice->ice_config, cfg)) 400 continue; 401 if (!isa_find_drq(child, &ice->ice_config, cfg)) 402 continue; 403 404 /* 405 * A working configuration was found enable the device 406 * with this configuration. 407 */ 408 if (idev->id_config_cb) { 409 idev->id_config_cb(idev->id_config_arg, 410 cfg, 1); 411 free(cfg, M_TEMP); 412 return 1; 413 } 414 } 415 416 /* 417 * Disable the device. 418 */ 419 bus_print_child_header(device_get_parent(child), child); 420 printf(" can't assign resources\n"); 421 if (bootverbose) 422 isa_print_child(device_get_parent(child), child); 423 bzero(cfg, sizeof (*cfg)); 424 if (idev->id_config_cb) 425 idev->id_config_cb(idev->id_config_arg, cfg, 0); 426 device_disable(child); 427 428 free(cfg, M_TEMP); 429 return 0; 430} 431 432/* 433 * Called after other devices have initialised to probe for isa devices. 434 */ 435void 436isa_probe_children(device_t dev) 437{ 438 device_t *children; 439 struct isa_config *cfg; 440 int nchildren, i; 441 442 /* 443 * Create all the children by calling driver's identify methods. 444 */ 445 bus_generic_probe(dev); 446 447 if (device_get_children(dev, &children, &nchildren)) 448 return; 449 450 /* 451 * First disable all pnp devices so that they don't get 452 * matched by legacy probes. 453 */ 454 if (bootverbose) 455 printf("isa_probe_children: disabling PnP devices\n"); 456 457 cfg = malloc(sizeof(*cfg), M_TEMP, M_NOWAIT|M_ZERO); 458 if (cfg == NULL) { 459 free(children, M_TEMP); 460 return; 461 } 462 463 for (i = 0; i < nchildren; i++) { 464 device_t child = children[i]; 465 struct isa_device *idev = DEVTOISA(child); 466 467 bzero(cfg, sizeof(*cfg)); 468 if (idev->id_config_cb) 469 idev->id_config_cb(idev->id_config_arg, cfg, 0); 470 } 471 472 free(cfg, M_TEMP); 473 474 /* 475 * Next probe all non-pnp devices so that they claim their 476 * resources first. 477 */ 478 if (bootverbose) 479 printf("isa_probe_children: probing non-PnP devices\n"); 480 for (i = 0; i < nchildren; i++) { 481 device_t child = children[i]; 482 struct isa_device *idev = DEVTOISA(child); 483 484 if (TAILQ_FIRST(&idev->id_configs)) 485 continue; 486 487 device_probe_and_attach(child); 488 } 489 490 /* 491 * Finally assign resource to pnp devices and probe them. 492 */ 493 if (bootverbose) 494 printf("isa_probe_children: probing PnP devices\n"); 495 for (i = 0; i < nchildren; i++) { 496 device_t child = children[i]; 497 struct isa_device* idev = DEVTOISA(child); 498 499 if (!TAILQ_FIRST(&idev->id_configs)) 500 continue; 501 502 if (isa_assign_resources(child)) { 503 struct resource_list *rl = &idev->id_resources; 504 struct resource_list_entry *rle; 505 506 device_probe_and_attach(child); 507 508 /* 509 * Claim any unallocated resources to keep other 510 * devices from using them. 511 */ 512 SLIST_FOREACH(rle, rl, link) { 513 if (!rle->res) { 514 int rid = rle->rid; 515 resource_list_alloc(rl, dev, child, 516 rle->type, 517 &rid, 518 0, ~0, 1, 0); 519 } 520 } 521 } 522 } 523 524 free(children, M_TEMP); 525 526 isa_running = 1; 527} 528 529/* 530 * Add a new child with default ivars. 531 */ 532static device_t 533isa_add_child(device_t dev, int order, const char *name, int unit) 534{ 535 device_t child; 536 struct isa_device *idev; 537 538 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT | M_ZERO); 539 if (!idev) 540 return 0; 541 542 resource_list_init(&idev->id_resources); 543 TAILQ_INIT(&idev->id_configs); 544 545 child = device_add_child_ordered(dev, order, name, unit); 546 device_set_ivars(child, idev); 547 548 return child; 549} 550 551static int 552isa_print_resources(struct resource_list *rl, const char *name, int type, 553 int count, const char *format) 554{ 555 struct resource_list_entry *rle; 556 int printed; 557 int i, retval = 0;; 558 559 printed = 0; 560 for (i = 0; i < count; i++) { 561 rle = resource_list_find(rl, type, i); 562 if (rle) { 563 if (printed == 0) 564 retval += printf(" %s ", name); 565 else if (printed > 0) 566 retval += printf(","); 567 printed++; 568 retval += printf(format, rle->start); 569 if (rle->count > 1) { 570 retval += printf("-"); 571 retval += printf(format, 572 rle->start + rle->count - 1); 573 } 574 } else if (i > 3) { 575 /* check the first few regardless */ 576 break; 577 } 578 } 579 return retval; 580} 581 582static int 583isa_print_all_resources(device_t dev) 584{ 585 struct isa_device *idev = DEVTOISA(dev); 586 struct resource_list *rl = &idev->id_resources; 587 int retval = 0; 588 589 if (SLIST_FIRST(rl) || device_get_flags(dev)) 590 retval += printf(" at"); 591 592 retval += isa_print_resources(rl, "port", SYS_RES_IOPORT, 593 ISA_NPORT, "%#lx"); 594 retval += isa_print_resources(rl, "iomem", SYS_RES_MEMORY, 595 ISA_NMEM, "%#lx"); 596 retval += isa_print_resources(rl, "irq", SYS_RES_IRQ, 597 ISA_NIRQ, "%ld"); 598 retval += isa_print_resources(rl, "drq", SYS_RES_DRQ, 599 ISA_NDRQ, "%ld"); 600 if (device_get_flags(dev)) 601 retval += printf(" flags %#x", device_get_flags(dev)); 602 603 return retval; 604} 605 606static int 607isa_print_child(device_t bus, device_t dev) 608{ 609 int retval = 0; 610 611 retval += bus_print_child_header(bus, dev); 612 retval += isa_print_all_resources(dev); 613 retval += bus_print_child_footer(bus, dev); 614 615 return (retval); 616} 617 618static void 619isa_probe_nomatch(device_t dev, device_t child) 620{ 621 if (bootverbose) { 622 bus_print_child_header(dev, child); 623 printf(" failed to probe"); 624 isa_print_all_resources(child); 625 bus_print_child_footer(dev, child); 626 } 627 628 return; 629} 630 631static int 632isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result) 633{ 634 struct isa_device* idev = DEVTOISA(dev); 635 struct resource_list *rl = &idev->id_resources; 636 struct resource_list_entry *rle; 637 638 switch (index) { 639 case ISA_IVAR_PORT_0: 640 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 641 if (rle) 642 *result = rle->start; 643 else 644 *result = -1; 645 break; 646 647 case ISA_IVAR_PORT_1: 648 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 649 if (rle) 650 *result = rle->start; 651 else 652 *result = -1; 653 break; 654 655 case ISA_IVAR_PORTSIZE_0: 656 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 657 if (rle) 658 *result = rle->count; 659 else 660 *result = 0; 661 break; 662 663 case ISA_IVAR_PORTSIZE_1: 664 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 665 if (rle) 666 *result = rle->count; 667 else 668 *result = 0; 669 break; 670 671 case ISA_IVAR_MADDR_0: 672 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 673 if (rle) 674 *result = rle->start; 675 else 676 *result = -1; 677 break; 678 679 case ISA_IVAR_MADDR_1: 680 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 681 if (rle) 682 *result = rle->start; 683 else 684 *result = -1; 685 break; 686 687 case ISA_IVAR_MSIZE_0: 688 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 689 if (rle) 690 *result = rle->count; 691 else 692 *result = 0; 693 break; 694 695 case ISA_IVAR_MSIZE_1: 696 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 697 if (rle) 698 *result = rle->count; 699 else 700 *result = 0; 701 break; 702 703 case ISA_IVAR_IRQ_0: 704 rle = resource_list_find(rl, SYS_RES_IRQ, 0); 705 if (rle) 706 *result = rle->start; 707 else 708 *result = -1; 709 break; 710 711 case ISA_IVAR_IRQ_1: 712 rle = resource_list_find(rl, SYS_RES_IRQ, 1); 713 if (rle) 714 *result = rle->start; 715 else 716 *result = -1; 717 break; 718 719 case ISA_IVAR_DRQ_0: 720 rle = resource_list_find(rl, SYS_RES_DRQ, 0); 721 if (rle) 722 *result = rle->start; 723 else 724 *result = -1; 725 break; 726 727 case ISA_IVAR_DRQ_1: 728 rle = resource_list_find(rl, SYS_RES_DRQ, 1); 729 if (rle) 730 *result = rle->start; 731 else 732 *result = -1; 733 break; 734 735 case ISA_IVAR_VENDORID: 736 *result = idev->id_vendorid; 737 break; 738 739 case ISA_IVAR_SERIAL: 740 *result = idev->id_serial; 741 break; 742 743 case ISA_IVAR_LOGICALID: 744 *result = idev->id_logicalid; 745 break; 746 747 case ISA_IVAR_COMPATID: 748 *result = idev->id_compatid; 749 break; 750 751 default: 752 return ENOENT; 753 } 754 755 return 0; 756} 757 758static int 759isa_write_ivar(device_t bus, device_t dev, 760 int index, uintptr_t value) 761{ 762 struct isa_device* idev = DEVTOISA(dev); 763 764 switch (index) { 765 case ISA_IVAR_PORT_0: 766 case ISA_IVAR_PORT_1: 767 case ISA_IVAR_PORTSIZE_0: 768 case ISA_IVAR_PORTSIZE_1: 769 case ISA_IVAR_MADDR_0: 770 case ISA_IVAR_MADDR_1: 771 case ISA_IVAR_MSIZE_0: 772 case ISA_IVAR_MSIZE_1: 773 case ISA_IVAR_IRQ_0: 774 case ISA_IVAR_IRQ_1: 775 case ISA_IVAR_DRQ_0: 776 case ISA_IVAR_DRQ_1: 777 return EINVAL; 778 779 case ISA_IVAR_VENDORID: 780 idev->id_vendorid = value; 781 break; 782 783 case ISA_IVAR_SERIAL: 784 idev->id_serial = value; 785 break; 786 787 case ISA_IVAR_LOGICALID: 788 idev->id_logicalid = value; 789 break; 790 791 case ISA_IVAR_COMPATID: 792 idev->id_compatid = value; 793 break; 794 795 default: 796 return (ENOENT); 797 } 798 799 return (0); 800} 801 802/* 803 * Free any resources which the driver missed or which we were holding for 804 * it (see isa_probe_children). 805 */ 806static void 807isa_child_detached(device_t dev, device_t child) 808{ 809 struct isa_device* idev = DEVTOISA(child); 810 struct resource_list *rl = &idev->id_resources; 811 struct resource_list_entry *rle; 812 813 if (TAILQ_FIRST(&idev->id_configs)) { 814 /* 815 * Claim any unallocated resources to keep other 816 * devices from using them. 817 */ 818 SLIST_FOREACH(rle, rl, link) { 819 if (!rle->res) { 820 int rid = rle->rid; 821 resource_list_alloc(rl, dev, child, 822 rle->type, 823 &rid, 0, ~0, 1, 0); 824 } 825 } 826 } 827} 828 829static void 830isa_driver_added(device_t dev, driver_t *driver) 831{ 832 device_t *children; 833 int nchildren, i; 834 835 /* 836 * Don't do anything if drivers are dynamically 837 * added during autoconfiguration (cf. ymf724). 838 * since that would end up calling identify 839 * twice. 840 */ 841 if (!isa_running) 842 return; 843 844 DEVICE_IDENTIFY(driver, dev); 845 if (device_get_children(dev, &children, &nchildren)) 846 return; 847 848 for (i = 0; i < nchildren; i++) { 849 device_t child = children[i]; 850 struct isa_device *idev = DEVTOISA(child); 851 struct resource_list *rl = &idev->id_resources; 852 struct resource_list_entry *rle; 853 854 if (device_get_state(child) != DS_NOTPRESENT) 855 continue; 856 if (!device_is_enabled(child)) 857 continue; 858 859 /* 860 * Free resources which we were holding on behalf of 861 * the device. 862 */ 863 SLIST_FOREACH(rle, &idev->id_resources, link) { 864 if (rle->res) 865 resource_list_release(rl, dev, child, 866 rle->type, 867 rle->rid, 868 rle->res); 869 } 870 871 if (TAILQ_FIRST(&idev->id_configs)) 872 if (!isa_assign_resources(child)) 873 continue; 874 875 device_probe_and_attach(child); 876 877 if (TAILQ_FIRST(&idev->id_configs)) { 878 /* 879 * Claim any unallocated resources to keep other 880 * devices from using them. 881 */ 882 SLIST_FOREACH(rle, rl, link) { 883 if (!rle->res) { 884 int rid = rle->rid; 885 resource_list_alloc(rl, dev, child, 886 rle->type, 887 &rid, 0, ~0, 1, 0); 888 } 889 } 890 } 891 } 892 893 free(children, M_TEMP); 894} 895 896static int 897isa_set_resource(device_t dev, device_t child, int type, int rid, 898 u_long start, u_long count) 899{ 900 struct isa_device* idev = DEVTOISA(child); 901 struct resource_list *rl = &idev->id_resources; 902 903 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY 904 && type != SYS_RES_IRQ && type != SYS_RES_DRQ) 905 return EINVAL; 906 if (rid < 0) 907 return EINVAL; 908 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT) 909 return EINVAL; 910 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM) 911 return EINVAL; 912 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ) 913 return EINVAL; 914 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ) 915 return EINVAL; 916 917 resource_list_add(rl, type, rid, start, start + count - 1, count); 918 919 return 0; 920} 921 922static struct resource_list * 923isa_get_resource_list (device_t dev, device_t child) 924{ 925 struct isa_device* idev = DEVTOISA(child); 926 struct resource_list *rl = &idev->id_resources; 927 928 if (!rl) 929 return (NULL); 930 931 return (rl); 932} 933 934static int 935isa_add_config(device_t dev, device_t child, 936 int priority, struct isa_config *config) 937{ 938 struct isa_device* idev = DEVTOISA(child); 939 struct isa_config_entry *newice, *ice; 940 941 newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT); 942 if (!newice) 943 return ENOMEM; 944 945 newice->ice_priority = priority; 946 newice->ice_config = *config; 947 948 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 949 if (ice->ice_priority > priority) 950 break; 951 } 952 if (ice) 953 TAILQ_INSERT_BEFORE(ice, newice, ice_link); 954 else 955 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link); 956 957 return 0; 958} 959 960static void 961isa_set_config_callback(device_t dev, device_t child, 962 isa_config_cb *fn, void *arg) 963{ 964 struct isa_device* idev = DEVTOISA(child); 965 966 idev->id_config_cb = fn; 967 idev->id_config_arg = arg; 968} 969 970static int 971isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids) 972{ 973 struct isa_device* idev = DEVTOISA(child); 974 975 if (!idev->id_vendorid) 976 return ENOENT; 977 978 while (ids && ids->ip_id) { 979 /* 980 * Really ought to support >1 compat id per device. 981 */ 982 if (idev->id_logicalid == ids->ip_id 983 || idev->id_compatid == ids->ip_id) { 984 if (ids->ip_desc) 985 device_set_desc(child, ids->ip_desc); 986 return 0; 987 } 988 ids++; 989 } 990 991 return ENXIO; 992} 993 994static device_method_t isa_methods[] = { 995 /* Device interface */ 996 DEVMETHOD(device_probe, isa_probe), 997 DEVMETHOD(device_attach, isa_attach), 998 DEVMETHOD(device_detach, bus_generic_detach), 999 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1000 DEVMETHOD(device_suspend, bus_generic_suspend), 1001 DEVMETHOD(device_resume, bus_generic_resume), 1002 1003 /* Bus interface */ 1004 DEVMETHOD(bus_add_child, isa_add_child), 1005 DEVMETHOD(bus_print_child, isa_print_child), 1006 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch), 1007 DEVMETHOD(bus_read_ivar, isa_read_ivar), 1008 DEVMETHOD(bus_write_ivar, isa_write_ivar), 1009 DEVMETHOD(bus_child_detached, isa_child_detached), 1010 DEVMETHOD(bus_driver_added, isa_driver_added), 1011 DEVMETHOD(bus_setup_intr, isa_setup_intr), 1012 DEVMETHOD(bus_teardown_intr, isa_teardown_intr), 1013 1014 DEVMETHOD(bus_get_resource_list,isa_get_resource_list), 1015 DEVMETHOD(bus_alloc_resource, isa_alloc_resource), 1016 DEVMETHOD(bus_release_resource, isa_release_resource), 1017 DEVMETHOD(bus_set_resource, isa_set_resource), 1018 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 1019 DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource), 1020 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 1021 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 1022 1023 /* ISA interface */ 1024 DEVMETHOD(isa_add_config, isa_add_config), 1025 DEVMETHOD(isa_set_config_callback, isa_set_config_callback), 1026 DEVMETHOD(isa_pnp_probe, isa_pnp_probe), 1027 1028 { 0, 0 } 1029}; 1030 1031static driver_t isa_driver = { 1032 "isa", 1033 isa_methods, 1034 1, /* no softc */ 1035}; 1036 1037/* 1038 * ISA can be attached to a PCI-ISA bridge or directly to the nexus. 1039 */ 1040DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0); 1041DRIVER_MODULE(isa, eisab, isa_driver, isa_devclass, 0, 0); 1042#ifdef __i386__ 1043DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0); 1044#endif 1045