isa_common.c revision 62059
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 62059 2000-06-25 09:19:02Z dfr $ 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 79MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device"); 80 81static devclass_t isa_devclass; 82static int isa_running; 83 84/* 85 * At 'probe' time, we add all the devices which we know about to the 86 * bus. The generic attach routine will probe and attach them if they 87 * are alive. 88 */ 89static int 90isa_probe(device_t dev) 91{ 92 device_set_desc(dev, "ISA bus"); 93 isa_init(); /* Allow machdep code to initialise */ 94 return 0; 95} 96 97extern device_t isa_bus_device; 98 99static int 100isa_attach(device_t dev) 101{ 102 /* 103 * Arrange for isa_probe_children(dev) to be called later. XXX 104 */ 105 isa_bus_device = dev; 106 return 0; 107} 108 109/* 110 * Find a working set of memory regions for a child using the ranges 111 * in *config and return the regions in *result. Returns non-zero if 112 * a set of ranges was found. 113 */ 114static int 115isa_find_memory(device_t child, 116 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 u_int32_t start, end, size, align; 134 for (start = config->ic_mem[i].ir_start, 135 end = config->ic_mem[i].ir_end, 136 size = config->ic_mem[i].ir_size, 137 align = config->ic_mem[i].ir_align; 138 start + size - 1 <= end; 139 start += align) { 140 bus_set_resource(child, SYS_RES_MEMORY, i, 141 start, size); 142 res[i] = bus_alloc_resource(child, 143 SYS_RES_MEMORY, &i, 144 0, ~0, 1, 0 /* !RF_ACTIVE */); 145 if (res[i]) { 146 result->ic_mem[i].ir_start = start; 147 result->ic_mem[i].ir_end = start + size - 1; 148 result->ic_mem[i].ir_size = size; 149 result->ic_mem[i].ir_align = align; 150 break; 151 } 152 } 153 154 /* 155 * If we didn't find a place for memory range i, then 156 * give up now. 157 */ 158 if (!res[i]) { 159 success = 0; 160 break; 161 } 162 } 163 164 for (i = 0; i < ISA_NMEM; i++) { 165 if (res[i]) 166 bus_release_resource(child, SYS_RES_MEMORY, 167 i, res[i]); 168 } 169 170 return success; 171} 172 173/* 174 * Find a working set of port regions for a child using the ranges 175 * in *config and return the regions in *result. Returns non-zero if 176 * a set of ranges was found. 177 */ 178static int 179isa_find_port(device_t child, 180 struct isa_config *config, 181 struct isa_config *result) 182{ 183 int success, i; 184 struct resource *res[ISA_NPORT]; 185 186 /* 187 * First clear out any existing resource definitions. 188 */ 189 for (i = 0; i < ISA_NPORT; i++) { 190 bus_delete_resource(child, SYS_RES_IOPORT, i); 191 res[i] = NULL; 192 } 193 194 success = 1; 195 result->ic_nport = config->ic_nport; 196 for (i = 0; i < config->ic_nport; i++) { 197 u_int32_t start, end, size, align; 198 for (start = config->ic_port[i].ir_start, 199 end = config->ic_port[i].ir_end, 200 size = config->ic_port[i].ir_size, 201 align = config->ic_port[i].ir_align; 202 start + size - 1 <= end; 203 start += align) { 204 bus_set_resource(child, SYS_RES_IOPORT, i, 205 start, size); 206 res[i] = bus_alloc_resource(child, 207 SYS_RES_IOPORT, &i, 208 0, ~0, 1, 0 /* !RF_ACTIVE */); 209 if (res[i]) { 210 result->ic_port[i].ir_start = start; 211 result->ic_port[i].ir_end = start + size - 1; 212 result->ic_port[i].ir_size = size; 213 result->ic_port[i].ir_align = align; 214 break; 215 } 216 } 217 218 /* 219 * If we didn't find a place for port range i, then 220 * give up now. 221 */ 222 if (!res[i]) { 223 success = 0; 224 break; 225 } 226 } 227 228 for (i = 0; i < ISA_NPORT; i++) { 229 if (res[i]) 230 bus_release_resource(child, SYS_RES_IOPORT, 231 i, res[i]); 232 } 233 234 return success; 235} 236 237/* 238 * Return the index of the first bit in the mask (or -1 if mask is empty. 239 */ 240static int 241find_first_bit(u_int32_t mask) 242{ 243 return ffs(mask) - 1; 244} 245 246/* 247 * Return the index of the next bit in the mask, or -1 if there are no more. 248 */ 249static int 250find_next_bit(u_int32_t mask, int bit) 251{ 252 bit++; 253 while (bit < 32 && !(mask & (1 << bit))) 254 bit++; 255 if (bit != 32) 256 return bit; 257 return -1; 258} 259 260/* 261 * Find a working set of irqs for a child using the masks in *config 262 * and return the regions in *result. Returns non-zero if a set of 263 * irqs was found. 264 */ 265static int 266isa_find_irq(device_t child, 267 struct isa_config *config, 268 struct isa_config *result) 269{ 270 int success, i; 271 struct resource *res[ISA_NIRQ]; 272 273 /* 274 * First clear out any existing resource definitions. 275 */ 276 for (i = 0; i < ISA_NIRQ; i++) { 277 bus_delete_resource(child, SYS_RES_IRQ, i); 278 res[i] = NULL; 279 } 280 281 success = 1; 282 result->ic_nirq = config->ic_nirq; 283 for (i = 0; i < config->ic_nirq; i++) { 284 u_int32_t mask = config->ic_irqmask[i]; 285 int irq; 286 for (irq = find_first_bit(mask); 287 irq != -1; 288 irq = find_next_bit(mask, irq)) { 289 bus_set_resource(child, SYS_RES_IRQ, i, 290 irq, 1); 291 res[i] = bus_alloc_resource(child, 292 SYS_RES_IRQ, &i, 293 0, ~0, 1, 0 /* !RF_ACTIVE */ ); 294 if (res[i]) { 295 result->ic_irqmask[i] = (1 << irq); 296 break; 297 } 298 } 299 300 /* 301 * If we didn't find a place for irq range i, then 302 * give up now. 303 */ 304 if (!res[i]) { 305 success = 0; 306 break; 307 } 308 } 309 310 for (i = 0; i < ISA_NIRQ; i++) { 311 if (res[i]) 312 bus_release_resource(child, SYS_RES_IRQ, 313 i, res[i]); 314 } 315 316 return success; 317} 318 319/* 320 * Find a working set of drqs for a child using the masks in *config 321 * and return the regions in *result. Returns non-zero if a set of 322 * drqs was found. 323 */ 324static int 325isa_find_drq(device_t child, 326 struct isa_config *config, 327 struct isa_config *result) 328{ 329 int success, i; 330 struct resource *res[ISA_NDRQ]; 331 332 /* 333 * First clear out any existing resource definitions. 334 */ 335 for (i = 0; i < ISA_NDRQ; i++) { 336 bus_delete_resource(child, SYS_RES_DRQ, i); 337 res[i] = NULL; 338 } 339 340 success = 1; 341 result->ic_ndrq = config->ic_ndrq; 342 for (i = 0; i < config->ic_ndrq; i++) { 343 u_int32_t mask = config->ic_drqmask[i]; 344 int drq; 345 for (drq = find_first_bit(mask); 346 drq != -1; 347 drq = find_next_bit(mask, drq)) { 348 bus_set_resource(child, SYS_RES_DRQ, i, 349 drq, 1); 350 res[i] = bus_alloc_resource(child, 351 SYS_RES_DRQ, &i, 352 0, ~0, 1, 0 /* !RF_ACTIVE */); 353 if (res[i]) { 354 result->ic_drqmask[i] = (1 << drq); 355 break; 356 } 357 } 358 359 /* 360 * If we didn't find a place for drq range i, then 361 * give up now. 362 */ 363 if (!res[i]) { 364 success = 0; 365 break; 366 } 367 } 368 369 for (i = 0; i < ISA_NDRQ; i++) { 370 if (res[i]) 371 bus_release_resource(child, SYS_RES_DRQ, 372 i, res[i]); 373 } 374 375 return success; 376} 377 378/* 379 * Attempt to find a working set of resources for a device. Return 380 * non-zero if a working configuration is found. 381 */ 382static int 383isa_assign_resources(device_t child) 384{ 385 struct isa_device *idev = DEVTOISA(child); 386 struct isa_config_entry *ice; 387 struct isa_config config; 388 389 bzero(&config, sizeof config); 390 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 391 if (!isa_find_memory(child, &ice->ice_config, &config)) 392 continue; 393 if (!isa_find_port(child, &ice->ice_config, &config)) 394 continue; 395 if (!isa_find_irq(child, &ice->ice_config, &config)) 396 continue; 397 if (!isa_find_drq(child, &ice->ice_config, &config)) 398 continue; 399 400 /* 401 * A working configuration was found enable the device 402 * with this configuration. 403 */ 404 if (idev->id_config_cb) { 405 idev->id_config_cb(idev->id_config_arg, 406 &config, 1); 407 return 1; 408 } 409 } 410 411 /* 412 * Disable the device. 413 */ 414 if (device_get_desc(child)) 415 device_printf(child, "<%s> can't assign resources\n", 416 device_get_desc(child)); 417 else 418 device_printf(child, "can't assign resources\n"); 419 bzero(&config, sizeof config); 420 if (idev->id_config_cb) 421 idev->id_config_cb(idev->id_config_arg, &config, 0); 422 device_disable(child); 423 424 return 0; 425} 426 427/* 428 * Called after other devices have initialised to probe for isa devices. 429 */ 430void 431isa_probe_children(device_t dev) 432{ 433 device_t *children; 434 int nchildren, i; 435 436 /* 437 * Create all the children by calling driver's identify methods. 438 */ 439 bus_generic_probe(dev); 440 441 if (device_get_children(dev, &children, &nchildren)) 442 return; 443 444 /* 445 * First disable all pnp devices so that they don't get 446 * matched by legacy probes. 447 */ 448 if (bootverbose) 449 printf("isa_probe_children: disabling PnP devices\n"); 450 for (i = 0; i < nchildren; i++) { 451 device_t child = children[i]; 452 struct isa_device *idev = DEVTOISA(child); 453 struct isa_config config; 454 455 bzero(&config, sizeof config); 456 if (idev->id_config_cb) 457 idev->id_config_cb(idev->id_config_arg, &config, 0); 458 } 459 460 /* 461 * Next probe all non-pnp devices so that they claim their 462 * resources first. 463 */ 464 if (bootverbose) 465 printf("isa_probe_children: probing non-PnP devices\n"); 466 for (i = 0; i < nchildren; i++) { 467 device_t child = children[i]; 468 struct isa_device *idev = DEVTOISA(child); 469 470 if (TAILQ_FIRST(&idev->id_configs)) 471 continue; 472 473 device_probe_and_attach(child); 474 } 475 476 /* 477 * Finally assign resource to pnp devices and probe them. 478 */ 479 if (bootverbose) 480 printf("isa_probe_children: probing PnP devices\n"); 481 for (i = 0; i < nchildren; i++) { 482 device_t child = children[i]; 483 struct isa_device* idev = DEVTOISA(child); 484 485 if (!TAILQ_FIRST(&idev->id_configs)) 486 continue; 487 488 if (isa_assign_resources(child)) { 489 struct resource_list *rl = &idev->id_resources; 490 struct resource_list_entry *rle; 491 492 device_probe_and_attach(child); 493 494 /* 495 * Claim any unallocated resources to keep other 496 * devices from using them. 497 */ 498 SLIST_FOREACH(rle, rl, link) { 499 if (!rle->res) { 500 int rid = rle->rid; 501 resource_list_alloc(rl, dev, child, 502 rle->type, 503 &rid, 504 0, ~0, 1, 0); 505 } 506 } 507 } 508 } 509 510 free(children, M_TEMP); 511 512 isa_running = 1; 513} 514 515/* 516 * Add a new child with default ivars. 517 */ 518static device_t 519isa_add_child(device_t dev, int order, const char *name, int unit) 520{ 521 device_t child; 522 struct isa_device *idev; 523 524 idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT); 525 if (!idev) 526 return 0; 527 bzero(idev, sizeof *idev); 528 529 resource_list_init(&idev->id_resources); 530 TAILQ_INIT(&idev->id_configs); 531 532 child = device_add_child_ordered(dev, order, name, unit); 533 device_set_ivars(child, idev); 534 535 return child; 536} 537 538static int 539isa_print_resources(struct resource_list *rl, const char *name, int type, 540 int count, const char *format) 541{ 542 struct resource_list_entry *rle; 543 int printed; 544 int i, retval = 0;; 545 546 printed = 0; 547 for (i = 0; i < count; i++) { 548 rle = resource_list_find(rl, type, i); 549 if (rle) { 550 if (printed == 0) 551 retval += printf(" %s ", name); 552 else if (printed > 0) 553 retval += printf(","); 554 printed++; 555 retval += printf(format, rle->start); 556 if (rle->count > 1) { 557 retval += printf("-"); 558 retval += printf(format, 559 rle->start + rle->count - 1); 560 } 561 } else if (i > 3) { 562 /* check the first few regardless */ 563 break; 564 } 565 } 566 return retval; 567} 568 569static int 570isa_print_all_resources(device_t dev) 571{ 572 struct isa_device *idev = DEVTOISA(dev); 573 struct resource_list *rl = &idev->id_resources; 574 int retval = 0; 575 576 if (SLIST_FIRST(rl) || device_get_flags(dev)) 577 retval += printf(" at"); 578 579 retval += isa_print_resources(rl, "port", SYS_RES_IOPORT, 580 ISA_NPORT, "%#lx"); 581 retval += isa_print_resources(rl, "iomem", SYS_RES_MEMORY, 582 ISA_NMEM, "%#lx"); 583 retval += isa_print_resources(rl, "irq", SYS_RES_IRQ, 584 ISA_NIRQ, "%ld"); 585 retval += isa_print_resources(rl, "drq", SYS_RES_DRQ, 586 ISA_NDRQ, "%ld"); 587 if (device_get_flags(dev)) 588 retval += printf(" flags %#x", device_get_flags(dev)); 589 590 return retval; 591} 592 593static int 594isa_print_child(device_t bus, device_t dev) 595{ 596 int retval = 0; 597 598 retval += bus_print_child_header(bus, dev); 599 retval += isa_print_all_resources(dev); 600 retval += bus_print_child_footer(bus, dev); 601 602 return (retval); 603} 604 605static void 606isa_probe_nomatch(device_t dev, device_t child) 607{ 608 device_printf(dev, "<%s> found", 609 pnp_eisaformat(isa_get_logicalid(child))); 610 if (bootverbose) 611 isa_print_all_resources(child); 612 printf("\n"); 613 614 return; 615} 616 617static int 618isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result) 619{ 620 struct isa_device* idev = DEVTOISA(dev); 621 struct resource_list *rl = &idev->id_resources; 622 struct resource_list_entry *rle; 623 624 switch (index) { 625 case ISA_IVAR_PORT_0: 626 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 627 if (rle) 628 *result = rle->start; 629 else 630 *result = -1; 631 break; 632 633 case ISA_IVAR_PORT_1: 634 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 635 if (rle) 636 *result = rle->start; 637 else 638 *result = -1; 639 break; 640 641 case ISA_IVAR_PORTSIZE_0: 642 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 643 if (rle) 644 *result = rle->count; 645 else 646 *result = 0; 647 break; 648 649 case ISA_IVAR_PORTSIZE_1: 650 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 651 if (rle) 652 *result = rle->count; 653 else 654 *result = 0; 655 break; 656 657 case ISA_IVAR_MADDR_0: 658 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 659 if (rle) 660 *result = rle->start; 661 else 662 *result = -1; 663 break; 664 665 case ISA_IVAR_MADDR_1: 666 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 667 if (rle) 668 *result = rle->start; 669 else 670 *result = -1; 671 break; 672 673 case ISA_IVAR_MSIZE_0: 674 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 675 if (rle) 676 *result = rle->count; 677 else 678 *result = 0; 679 break; 680 681 case ISA_IVAR_MSIZE_1: 682 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 683 if (rle) 684 *result = rle->count; 685 else 686 *result = 0; 687 break; 688 689 case ISA_IVAR_IRQ_0: 690 rle = resource_list_find(rl, SYS_RES_IRQ, 0); 691 if (rle) 692 *result = rle->start; 693 else 694 *result = -1; 695 break; 696 697 case ISA_IVAR_IRQ_1: 698 rle = resource_list_find(rl, SYS_RES_IRQ, 1); 699 if (rle) 700 *result = rle->start; 701 else 702 *result = -1; 703 break; 704 705 case ISA_IVAR_DRQ_0: 706 rle = resource_list_find(rl, SYS_RES_DRQ, 0); 707 if (rle) 708 *result = rle->start; 709 else 710 *result = -1; 711 break; 712 713 case ISA_IVAR_DRQ_1: 714 rle = resource_list_find(rl, SYS_RES_DRQ, 1); 715 if (rle) 716 *result = rle->start; 717 else 718 *result = -1; 719 break; 720 721 case ISA_IVAR_VENDORID: 722 *result = idev->id_vendorid; 723 break; 724 725 case ISA_IVAR_SERIAL: 726 *result = idev->id_serial; 727 break; 728 729 case ISA_IVAR_LOGICALID: 730 *result = idev->id_logicalid; 731 break; 732 733 case ISA_IVAR_COMPATID: 734 *result = idev->id_compatid; 735 break; 736 737 default: 738 return ENOENT; 739 } 740 741 return 0; 742} 743 744static int 745isa_write_ivar(device_t bus, device_t dev, 746 int index, uintptr_t value) 747{ 748 struct isa_device* idev = DEVTOISA(dev); 749 750 switch (index) { 751 case ISA_IVAR_PORT_0: 752 case ISA_IVAR_PORT_1: 753 case ISA_IVAR_PORTSIZE_0: 754 case ISA_IVAR_PORTSIZE_1: 755 case ISA_IVAR_MADDR_0: 756 case ISA_IVAR_MADDR_1: 757 case ISA_IVAR_MSIZE_0: 758 case ISA_IVAR_MSIZE_1: 759 case ISA_IVAR_IRQ_0: 760 case ISA_IVAR_IRQ_1: 761 case ISA_IVAR_DRQ_0: 762 case ISA_IVAR_DRQ_1: 763 return EINVAL; 764 765 case ISA_IVAR_VENDORID: 766 idev->id_vendorid = value; 767 break; 768 769 case ISA_IVAR_SERIAL: 770 idev->id_serial = value; 771 break; 772 773 case ISA_IVAR_LOGICALID: 774 idev->id_logicalid = value; 775 break; 776 777 case ISA_IVAR_COMPATID: 778 idev->id_compatid = value; 779 break; 780 781 default: 782 return (ENOENT); 783 } 784 785 return (0); 786} 787 788/* 789 * Free any resources which the driver missed or which we were holding for 790 * it (see isa_probe_children). 791 */ 792static void 793isa_child_detached(device_t dev, device_t child) 794{ 795 struct isa_device* idev = DEVTOISA(child); 796 struct resource_list *rl = &idev->id_resources; 797 struct resource_list_entry *rle; 798 799 if (TAILQ_FIRST(&idev->id_configs)) { 800 /* 801 * Claim any unallocated resources to keep other 802 * devices from using them. 803 */ 804 SLIST_FOREACH(rle, rl, link) { 805 if (!rle->res) { 806 int rid = rle->rid; 807 resource_list_alloc(rl, dev, child, 808 rle->type, 809 &rid, 0, ~0, 1, 0); 810 } 811 } 812 } 813} 814 815static void 816isa_driver_added(device_t dev, driver_t *driver) 817{ 818 device_t *children; 819 int nchildren, i; 820 821 /* 822 * Don't do anything if drivers are dynamically 823 * added during autoconfiguration (cf. ymf724). 824 * since that would end up calling identify 825 * twice. 826 */ 827 if (!isa_running) 828 return; 829 830 DEVICE_IDENTIFY(driver, dev); 831 if (device_get_children(dev, &children, &nchildren)) 832 return; 833 834 for (i = 0; i < nchildren; i++) { 835 device_t child = children[i]; 836 struct isa_device *idev = DEVTOISA(child); 837 struct resource_list *rl = &idev->id_resources; 838 struct resource_list_entry *rle; 839 840 if (device_get_state(child) != DS_NOTPRESENT) 841 continue; 842 if (!device_is_enabled(child)) 843 continue; 844 845 /* 846 * Free resources which we were holding on behalf of 847 * the device. 848 */ 849 SLIST_FOREACH(rle, &idev->id_resources, link) { 850 if (rle->res) 851 resource_list_release(rl, dev, child, 852 rle->type, 853 rle->rid, 854 rle->res); 855 } 856 857 if (TAILQ_FIRST(&idev->id_configs)) 858 if (!isa_assign_resources(child)) 859 continue; 860 861 device_probe_and_attach(child); 862 863 if (TAILQ_FIRST(&idev->id_configs)) { 864 /* 865 * Claim any unallocated resources to keep other 866 * devices from using them. 867 */ 868 SLIST_FOREACH(rle, rl, link) { 869 if (!rle->res) { 870 int rid = rle->rid; 871 resource_list_alloc(rl, dev, child, 872 rle->type, 873 &rid, 0, ~0, 1, 0); 874 } 875 } 876 } 877 } 878 879 free(children, M_TEMP); 880} 881 882static int 883isa_set_resource(device_t dev, device_t child, int type, int rid, 884 u_long start, u_long count) 885{ 886 struct isa_device* idev = DEVTOISA(child); 887 struct resource_list *rl = &idev->id_resources; 888 889 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY 890 && type != SYS_RES_IRQ && type != SYS_RES_DRQ) 891 return EINVAL; 892 if (rid < 0) 893 return EINVAL; 894 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT) 895 return EINVAL; 896 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM) 897 return EINVAL; 898 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ) 899 return EINVAL; 900 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ) 901 return EINVAL; 902 903 resource_list_add(rl, type, rid, start, start + count - 1, count); 904 905 return 0; 906} 907 908static int 909isa_get_resource(device_t dev, device_t child, int type, int rid, 910 u_long *startp, u_long *countp) 911{ 912 struct isa_device* idev = DEVTOISA(child); 913 struct resource_list *rl = &idev->id_resources; 914 struct resource_list_entry *rle; 915 916 rle = resource_list_find(rl, type, rid); 917 if (!rle) 918 return ENOENT; 919 920 if (startp) 921 *startp = rle->start; 922 if (countp) 923 *countp = rle->count; 924 925 return 0; 926} 927 928static void 929isa_delete_resource(device_t dev, device_t child, int type, int rid) 930{ 931 struct isa_device* idev = DEVTOISA(child); 932 struct resource_list *rl = &idev->id_resources; 933 resource_list_delete(rl, type, rid); 934} 935 936static int 937isa_add_config(device_t dev, device_t child, 938 int priority, struct isa_config *config) 939{ 940 struct isa_device* idev = DEVTOISA(child); 941 struct isa_config_entry *newice, *ice; 942 943 newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT); 944 if (!newice) 945 return ENOMEM; 946 947 newice->ice_priority = priority; 948 newice->ice_config = *config; 949 950 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 951 if (ice->ice_priority > priority) 952 break; 953 } 954 if (ice) 955 TAILQ_INSERT_BEFORE(ice, newice, ice_link); 956 else 957 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link); 958 959 return 0; 960} 961 962static void 963isa_set_config_callback(device_t dev, device_t child, 964 isa_config_cb *fn, void *arg) 965{ 966 struct isa_device* idev = DEVTOISA(child); 967 968 idev->id_config_cb = fn; 969 idev->id_config_arg = arg; 970} 971 972static int 973isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids) 974{ 975 struct isa_device* idev = DEVTOISA(child); 976 977 if (!idev->id_vendorid) 978 return ENOENT; 979 980 while (ids->ip_id) { 981 /* 982 * Really ought to support >1 compat id per device. 983 */ 984 if (idev->id_logicalid == ids->ip_id 985 || idev->id_compatid == ids->ip_id) { 986 if (ids->ip_desc) 987 device_set_desc(child, ids->ip_desc); 988 return 0; 989 } 990 ids++; 991 } 992 993 return ENXIO; 994} 995 996static device_method_t isa_methods[] = { 997 /* Device interface */ 998 DEVMETHOD(device_probe, isa_probe), 999 DEVMETHOD(device_attach, isa_attach), 1000 DEVMETHOD(device_detach, bus_generic_detach), 1001 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1002 DEVMETHOD(device_suspend, bus_generic_suspend), 1003 DEVMETHOD(device_resume, bus_generic_resume), 1004 1005 /* Bus interface */ 1006 DEVMETHOD(bus_add_child, isa_add_child), 1007 DEVMETHOD(bus_print_child, isa_print_child), 1008 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch), 1009 DEVMETHOD(bus_read_ivar, isa_read_ivar), 1010 DEVMETHOD(bus_write_ivar, isa_write_ivar), 1011 DEVMETHOD(bus_child_detached, isa_child_detached), 1012 DEVMETHOD(bus_driver_added, isa_driver_added), 1013 DEVMETHOD(bus_alloc_resource, isa_alloc_resource), 1014 DEVMETHOD(bus_release_resource, isa_release_resource), 1015 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 1016 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 1017 DEVMETHOD(bus_setup_intr, isa_setup_intr), 1018 DEVMETHOD(bus_teardown_intr, isa_teardown_intr), 1019 DEVMETHOD(bus_set_resource, isa_set_resource), 1020 DEVMETHOD(bus_get_resource, isa_get_resource), 1021 DEVMETHOD(bus_delete_resource, isa_delete_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); 1041#ifdef __i386__ 1042DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0); 1043#endif 1044