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: src/sys/isa/isa_common.c,v 1.16.2.1 2000/09/16 15:49:52 roger Exp $ 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 <sys/rman.h> 69 #include <sys/machintr.h> 70 71 #include "isavar.h" 72 #include "isa_common.h" 73 74 static int isa_print_child (device_t, device_t); 75 76 MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device"); 77 78 static devclass_t isa_devclass; 79 static int isa_running; 80 81 /* 82 * At 'probe' time, we add all the devices which we know about to the 83 * bus. The generic attach routine will probe and attach them if they 84 * are alive. 85 */ 86 static int 87 isa_probe(device_t dev) 88 { 89 device_set_desc(dev, "ISA bus"); 90 return 0; 91 } 92 93 extern device_t isa_bus_device; 94 95 static int 96 isa_attach(device_t dev) 97 { 98 /* 99 * Arrange for isa_probe_children(dev) to be called later. XXX 100 */ 101 isa_bus_device = dev; 102 return 0; 103 } 104 105 /* 106 * Find a working set of memory regions for a child using the ranges 107 * in *config and return the regions in *result. Returns non-zero if 108 * a set of ranges was found. 109 */ 110 static int 111 isa_find_memory(device_t child, 112 struct isa_config *config, 113 struct isa_config *result) 114 { 115 int success, i; 116 struct resource *res[ISA_NMEM]; 117 118 /* 119 * First clear out any existing resource definitions. 120 */ 121 for (i = 0; i < ISA_NMEM; i++) { 122 bus_delete_resource(child, SYS_RES_MEMORY, i); 123 res[i] = NULL; 124 } 125 126 success = 1; 127 result->ic_nmem = config->ic_nmem; 128 for (i = 0; i < config->ic_nmem; i++) { 129 u_int32_t start, end, size, align; 130 for (start = config->ic_mem[i].ir_start, 131 end = config->ic_mem[i].ir_end, 132 size = config->ic_mem[i].ir_size, 133 align = config->ic_mem[i].ir_align; 134 start + size - 1 <= end; 135 start += MAX(align, 1)) { 136 bus_set_resource(child, SYS_RES_MEMORY, i, 137 start, size, -1); 138 res[i] = bus_alloc_resource(child, 139 SYS_RES_MEMORY, &i, 140 0, ~0, 1, 0 /* !RF_ACTIVE */); 141 if (res[i]) { 142 result->ic_mem[i].ir_start = start; 143 result->ic_mem[i].ir_end = start + size - 1; 144 result->ic_mem[i].ir_size = size; 145 result->ic_mem[i].ir_align = align; 146 break; 147 } 148 } 149 150 /* 151 * If we didn't find a place for memory range i, then 152 * give up now. 153 */ 154 if (!res[i]) { 155 success = 0; 156 break; 157 } 158 } 159 160 for (i = 0; i < ISA_NMEM; i++) { 161 if (res[i]) 162 bus_release_resource(child, SYS_RES_MEMORY, 163 i, res[i]); 164 } 165 166 return success; 167 } 168 169 /* 170 * Find a working set of port regions for a child using the ranges 171 * in *config and return the regions in *result. Returns non-zero if 172 * a set of ranges was found. 173 */ 174 static int 175 isa_find_port(device_t child, 176 struct isa_config *config, 177 struct isa_config *result) 178 { 179 int success, i; 180 struct resource *res[ISA_NPORT]; 181 182 /* 183 * First clear out any existing resource definitions. 184 */ 185 for (i = 0; i < ISA_NPORT; i++) { 186 bus_delete_resource(child, SYS_RES_IOPORT, i); 187 res[i] = NULL; 188 } 189 190 success = 1; 191 result->ic_nport = config->ic_nport; 192 for (i = 0; i < config->ic_nport; i++) { 193 u_int32_t start, end, size, align; 194 for (start = config->ic_port[i].ir_start, 195 end = config->ic_port[i].ir_end, 196 size = config->ic_port[i].ir_size, 197 align = config->ic_port[i].ir_align; 198 start + size - 1 <= end; 199 start += align) { 200 bus_set_resource(child, SYS_RES_IOPORT, i, 201 start, size, -1); 202 res[i] = bus_alloc_resource(child, 203 SYS_RES_IOPORT, &i, 204 0, ~0, 1, 0 /* !RF_ACTIVE */); 205 if (res[i]) { 206 result->ic_port[i].ir_start = start; 207 result->ic_port[i].ir_end = start + size - 1; 208 result->ic_port[i].ir_size = size; 209 result->ic_port[i].ir_align = align; 210 break; 211 } 212 } 213 214 /* 215 * If we didn't find a place for port range i, then 216 * give up now. 217 */ 218 if (!res[i]) { 219 success = 0; 220 break; 221 } 222 } 223 224 for (i = 0; i < ISA_NPORT; i++) { 225 if (res[i]) 226 bus_release_resource(child, SYS_RES_IOPORT, 227 i, res[i]); 228 } 229 230 return success; 231 } 232 233 /* 234 * Return the index of the first bit in the mask (or -1 if mask is empty. 235 */ 236 static int 237 find_first_bit(u_int32_t mask) 238 { 239 return ffs(mask) - 1; 240 } 241 242 /* 243 * Return the index of the next bit in the mask, or -1 if there are no more. 244 */ 245 static int 246 find_next_bit(u_int32_t mask, int bit) 247 { 248 bit++; 249 while (bit < 32 && !(mask & (1 << bit))) 250 bit++; 251 if (bit != 32) 252 return bit; 253 return -1; 254 } 255 256 /* 257 * Find a working set of irqs for a child using the masks in *config 258 * and return the regions in *result. Returns non-zero if a set of 259 * irqs was found. 260 */ 261 static int 262 isa_find_irq(device_t child, 263 struct isa_config *config, 264 struct isa_config *result) 265 { 266 int success, i; 267 struct resource *res[ISA_NIRQ]; 268 269 /* 270 * First clear out any existing resource definitions. 271 */ 272 for (i = 0; i < ISA_NIRQ; i++) { 273 bus_delete_resource(child, SYS_RES_IRQ, i); 274 res[i] = NULL; 275 } 276 277 success = 1; 278 result->ic_nirq = config->ic_nirq; 279 for (i = 0; i < config->ic_nirq; i++) { 280 u_int32_t mask = config->ic_irqmask[i]; 281 int irq; 282 for (irq = find_first_bit(mask); 283 irq != -1; 284 irq = find_next_bit(mask, irq)) { 285 bus_set_resource(child, SYS_RES_IRQ, i, 286 irq, 1, machintr_legacy_intr_cpuid(irq)); 287 res[i] = bus_alloc_resource(child, 288 SYS_RES_IRQ, &i, 289 0, ~0, 1, 0 /* !RF_ACTIVE */ ); 290 if (res[i]) { 291 result->ic_irqmask[i] = (1 << irq); 292 break; 293 } 294 } 295 296 /* 297 * If we didn't find a place for irq range i, then 298 * give up now. 299 */ 300 if (!res[i]) { 301 success = 0; 302 break; 303 } 304 } 305 306 for (i = 0; i < ISA_NIRQ; i++) { 307 if (res[i]) 308 bus_release_resource(child, SYS_RES_IRQ, 309 i, res[i]); 310 } 311 312 return success; 313 } 314 315 /* 316 * Find a working set of drqs for a child using the masks in *config 317 * and return the regions in *result. Returns non-zero if a set of 318 * drqs was found. 319 */ 320 static int 321 isa_find_drq(device_t child, 322 struct isa_config *config, 323 struct isa_config *result) 324 { 325 int success, i; 326 struct resource *res[ISA_NDRQ]; 327 328 /* 329 * First clear out any existing resource definitions. 330 */ 331 for (i = 0; i < ISA_NDRQ; i++) { 332 bus_delete_resource(child, SYS_RES_DRQ, i); 333 res[i] = NULL; 334 } 335 336 success = 1; 337 result->ic_ndrq = config->ic_ndrq; 338 for (i = 0; i < config->ic_ndrq; i++) { 339 u_int32_t mask = config->ic_drqmask[i]; 340 int drq; 341 for (drq = find_first_bit(mask); 342 drq != -1; 343 drq = find_next_bit(mask, drq)) { 344 bus_set_resource(child, SYS_RES_DRQ, i, 345 drq, 1, -1); 346 res[i] = bus_alloc_resource(child, 347 SYS_RES_DRQ, &i, 348 0, ~0, 1, 0 /* !RF_ACTIVE */); 349 if (res[i]) { 350 result->ic_drqmask[i] = (1 << drq); 351 break; 352 } 353 } 354 355 /* 356 * If we didn't find a place for drq range i, then 357 * give up now. 358 */ 359 if (!res[i]) { 360 success = 0; 361 break; 362 } 363 } 364 365 for (i = 0; i < ISA_NDRQ; i++) { 366 if (res[i]) 367 bus_release_resource(child, SYS_RES_DRQ, 368 i, res[i]); 369 } 370 371 return success; 372 } 373 374 /* 375 * Attempt to find a working set of resources for a device. Return 376 * non-zero if a working configuration is found. 377 */ 378 static int 379 isa_assign_resources(device_t child) 380 { 381 struct isa_device *idev = DEVTOISA(child); 382 struct isa_config_entry *ice; 383 struct isa_config config; 384 char *reason = "Empty ISA id_configs"; 385 386 bzero(&config, sizeof config); 387 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 388 reason = "memory"; 389 if (!isa_find_memory(child, &ice->ice_config, &config)) 390 continue; 391 reason = "port"; 392 if (!isa_find_port(child, &ice->ice_config, &config)) 393 continue; 394 reason = "irq"; 395 if (!isa_find_irq(child, &ice->ice_config, &config)) 396 continue; 397 reason = "drq"; 398 if (!isa_find_drq(child, &ice->ice_config, &config)) 399 continue; 400 401 /* 402 * A working configuration was found enable the device 403 * with this configuration. 404 */ 405 reason = "no callback"; 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 kprintf(" can't assign resources (%s)\n", reason); 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 */ 431 void 432 isa_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 * Since this routine is called long after the ISA bus had been 440 * attached, yet never probed, we have to call a hack function that 441 * temporarily sets the bus back to DS_ALIVE to run the probe. 442 */ 443 bus_generic_probe_hack(dev); 444 445 if (device_get_children(dev, &children, &nchildren)) 446 return; 447 448 /* 449 * First disable all pnp devices so that they don't get 450 * matched by legacy probes. 451 */ 452 if (bootverbose) 453 kprintf("isa_probe_children: disabling PnP devices\n"); 454 for (i = 0; i < nchildren; i++) { 455 device_t child = children[i]; 456 struct isa_device *idev = DEVTOISA(child); 457 struct isa_config config; 458 459 bzero(&config, sizeof config); 460 if (idev->id_config_cb) 461 idev->id_config_cb(idev->id_config_arg, &config, 0); 462 } 463 464 /* 465 * Next probe all non-pnp devices so that they claim their 466 * resources first. 467 */ 468 if (bootverbose) 469 kprintf("isa_probe_children: probing non-PnP devices\n"); 470 for (i = 0; i < nchildren; i++) { 471 device_t child = children[i]; 472 struct isa_device *idev = DEVTOISA(child); 473 474 if (TAILQ_FIRST(&idev->id_configs)) 475 continue; 476 477 device_probe_and_attach(child); 478 } 479 480 /* 481 * Finally assign resource to pnp devices and probe them. 482 */ 483 if (bootverbose) 484 kprintf("isa_probe_children: probing PnP devices\n"); 485 for (i = 0; i < nchildren; i++) { 486 device_t child = children[i]; 487 struct isa_device* idev = DEVTOISA(child); 488 489 if (!TAILQ_FIRST(&idev->id_configs)) 490 continue; 491 492 if (isa_assign_resources(child)) { 493 struct resource_list *rl = &idev->id_resources; 494 struct resource_list_entry *rle; 495 496 device_probe_and_attach(child); 497 498 /* 499 * Claim any unallocated resources to keep other 500 * devices from using them. 501 */ 502 SLIST_FOREACH(rle, rl, link) { 503 if (!rle->res) { 504 int rid = rle->rid; 505 resource_list_alloc(rl, dev, child, 506 rle->type, &rid, 0, ~0, 1, 507 0 /* !RF_ACTIVE */, -1); 508 } 509 } 510 } 511 } 512 513 kfree(children, M_TEMP); 514 515 isa_running = 1; 516 } 517 518 /* 519 * Add a new child with default ivars. 520 */ 521 static device_t 522 isa_add_child(device_t bus, device_t parent, int order, const char *name, int unit) 523 { 524 device_t child; 525 struct isa_device *idev; 526 527 idev = kmalloc(sizeof(struct isa_device), M_ISADEV, M_WAITOK | M_ZERO); 528 529 resource_list_init(&idev->id_resources); 530 TAILQ_INIT(&idev->id_configs); 531 532 child = device_add_child_ordered(parent, order, name, unit); 533 device_set_ivars(child, idev); 534 535 return child; 536 } 537 538 static int 539 isa_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 += kprintf(" %s ", name); 552 else if (printed > 0) 553 retval += kprintf(","); 554 printed++; 555 retval += kprintf(format, rle->start); 556 if (rle->count > 1) { 557 retval += kprintf("-"); 558 retval += kprintf(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 } 568 569 static int 570 isa_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 += kprintf(" 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 += kprintf(" flags %#x", device_get_flags(dev)); 589 590 return retval; 591 } 592 593 static int 594 isa_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 } 604 605 static void 606 isa_probe_nomatch(device_t dev, device_t child) 607 { 608 if (bootverbose) { 609 bus_print_child_header(dev, child); 610 kprintf(" failed to probe"); 611 isa_print_all_resources(child); 612 bus_print_child_footer(dev, child); 613 } 614 615 return; 616 } 617 618 static int 619 isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result) 620 { 621 struct isa_device* idev = DEVTOISA(dev); 622 struct resource_list *rl = &idev->id_resources; 623 struct resource_list_entry *rle; 624 625 switch (index) { 626 case ISA_IVAR_PORT_0: 627 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 628 if (rle) 629 *result = rle->start; 630 else 631 *result = -1; 632 break; 633 634 case ISA_IVAR_PORT_1: 635 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 636 if (rle) 637 *result = rle->start; 638 else 639 *result = -1; 640 break; 641 642 case ISA_IVAR_PORTSIZE_0: 643 rle = resource_list_find(rl, SYS_RES_IOPORT, 0); 644 if (rle) 645 *result = rle->count; 646 else 647 *result = 0; 648 break; 649 650 case ISA_IVAR_PORTSIZE_1: 651 rle = resource_list_find(rl, SYS_RES_IOPORT, 1); 652 if (rle) 653 *result = rle->count; 654 else 655 *result = 0; 656 break; 657 658 case ISA_IVAR_MADDR_0: 659 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 660 if (rle) 661 *result = rle->start; 662 else 663 *result = -1; 664 break; 665 666 case ISA_IVAR_MADDR_1: 667 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 668 if (rle) 669 *result = rle->start; 670 else 671 *result = -1; 672 break; 673 674 case ISA_IVAR_MSIZE_0: 675 rle = resource_list_find(rl, SYS_RES_MEMORY, 0); 676 if (rle) 677 *result = rle->count; 678 else 679 *result = 0; 680 break; 681 682 case ISA_IVAR_MSIZE_1: 683 rle = resource_list_find(rl, SYS_RES_MEMORY, 1); 684 if (rle) 685 *result = rle->count; 686 else 687 *result = 0; 688 break; 689 690 case ISA_IVAR_IRQ_0: 691 rle = resource_list_find(rl, SYS_RES_IRQ, 0); 692 if (rle) 693 *result = rle->start; 694 else 695 *result = -1; 696 break; 697 698 case ISA_IVAR_IRQ_1: 699 rle = resource_list_find(rl, SYS_RES_IRQ, 1); 700 if (rle) 701 *result = rle->start; 702 else 703 *result = -1; 704 break; 705 706 case ISA_IVAR_DRQ_0: 707 rle = resource_list_find(rl, SYS_RES_DRQ, 0); 708 if (rle) 709 *result = rle->start; 710 else 711 *result = -1; 712 break; 713 714 case ISA_IVAR_DRQ_1: 715 rle = resource_list_find(rl, SYS_RES_DRQ, 1); 716 if (rle) 717 *result = rle->start; 718 else 719 *result = -1; 720 break; 721 722 case ISA_IVAR_VENDORID: 723 *result = idev->id_vendorid; 724 break; 725 726 case ISA_IVAR_SERIAL: 727 *result = idev->id_serial; 728 break; 729 730 case ISA_IVAR_LOGICALID: 731 *result = idev->id_logicalid; 732 break; 733 734 case ISA_IVAR_COMPATID: 735 *result = idev->id_compatid; 736 break; 737 738 default: 739 return ENOENT; 740 } 741 742 return 0; 743 } 744 745 static int 746 isa_write_ivar(device_t bus, device_t dev, 747 int index, uintptr_t value) 748 { 749 struct isa_device* idev = DEVTOISA(dev); 750 751 switch (index) { 752 case ISA_IVAR_PORT_0: 753 case ISA_IVAR_PORT_1: 754 case ISA_IVAR_PORTSIZE_0: 755 case ISA_IVAR_PORTSIZE_1: 756 case ISA_IVAR_MADDR_0: 757 case ISA_IVAR_MADDR_1: 758 case ISA_IVAR_MSIZE_0: 759 case ISA_IVAR_MSIZE_1: 760 case ISA_IVAR_IRQ_0: 761 case ISA_IVAR_IRQ_1: 762 case ISA_IVAR_DRQ_0: 763 case ISA_IVAR_DRQ_1: 764 return EINVAL; 765 766 case ISA_IVAR_VENDORID: 767 idev->id_vendorid = value; 768 break; 769 770 case ISA_IVAR_SERIAL: 771 idev->id_serial = value; 772 break; 773 774 case ISA_IVAR_LOGICALID: 775 idev->id_logicalid = value; 776 break; 777 778 case ISA_IVAR_COMPATID: 779 idev->id_compatid = value; 780 break; 781 782 default: 783 return (ENOENT); 784 } 785 786 return (0); 787 } 788 789 /* 790 * Free any resources which the driver missed or which we were holding for 791 * it (see isa_probe_children). 792 */ 793 static void 794 isa_child_detached(device_t dev, device_t child) 795 { 796 struct isa_device* idev = DEVTOISA(child); 797 struct resource_list *rl = &idev->id_resources; 798 struct resource_list_entry *rle; 799 800 if (TAILQ_FIRST(&idev->id_configs)) { 801 /* 802 * Claim any unallocated resources to keep other 803 * devices from using them. 804 */ 805 SLIST_FOREACH(rle, rl, link) { 806 if (!rle->res) { 807 int rid = rle->rid; 808 resource_list_alloc(rl, dev, child, 809 rle->type, &rid, 0, ~0, 1, 810 0 /* !RF_ACTIVE */, -1); 811 } 812 } 813 } 814 } 815 816 static void 817 isa_driver_added(device_t dev, driver_t *driver) 818 { 819 device_t *children; 820 int nchildren, i; 821 822 /* 823 * Don't do anything if drivers are dynamically 824 * added during autoconfiguration (cf. ymf724). 825 * since that would end up calling identify 826 * twice. 827 */ 828 if (!isa_running) 829 return; 830 831 DEVICE_IDENTIFY(driver, dev); 832 if (device_get_children(dev, &children, &nchildren)) 833 return; 834 835 for (i = 0; i < nchildren; i++) { 836 device_t child = children[i]; 837 struct isa_device *idev = DEVTOISA(child); 838 struct resource_list *rl = &idev->id_resources; 839 struct resource_list_entry *rle; 840 841 if (device_get_state(child) != DS_NOTPRESENT) 842 continue; 843 if (!device_is_enabled(child)) 844 continue; 845 846 /* 847 * Free resources which we were holding on behalf of 848 * the device. 849 */ 850 SLIST_FOREACH(rle, &idev->id_resources, link) { 851 if (rle->res) 852 resource_list_release(rl, dev, child, 853 rle->type, 854 rle->rid, 855 rle->res); 856 } 857 858 if (TAILQ_FIRST(&idev->id_configs)) 859 if (!isa_assign_resources(child)) 860 continue; 861 862 device_probe_and_attach(child); 863 864 if (TAILQ_FIRST(&idev->id_configs)) { 865 /* 866 * Claim any unallocated resources to keep other 867 * devices from using them. 868 */ 869 SLIST_FOREACH(rle, rl, link) { 870 if (!rle->res) { 871 int rid = rle->rid; 872 resource_list_alloc(rl, dev, child, 873 rle->type, &rid, 0, ~0, 1, 874 0 /* !RF_ACTIVE */, -1); 875 } 876 } 877 } 878 } 879 880 kfree(children, M_TEMP); 881 } 882 883 static int 884 isa_set_resource(device_t dev, device_t child, int type, int rid, 885 u_long start, u_long count, int cpuid) 886 { 887 struct isa_device* idev = DEVTOISA(child); 888 struct resource_list *rl = &idev->id_resources; 889 890 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY 891 && type != SYS_RES_IRQ && type != SYS_RES_DRQ) 892 return EINVAL; 893 if (rid < 0) 894 return EINVAL; 895 if (type == SYS_RES_IOPORT && rid >= ISA_NPORT) 896 return EINVAL; 897 if (type == SYS_RES_MEMORY && rid >= ISA_NMEM) 898 return EINVAL; 899 if (type == SYS_RES_IRQ && rid >= ISA_NIRQ) 900 return EINVAL; 901 if (type == SYS_RES_DRQ && rid >= ISA_NDRQ) 902 return EINVAL; 903 904 resource_list_add(rl, type, rid, start, start + count - 1, count, 905 cpuid); 906 907 return 0; 908 } 909 910 static int 911 isa_get_resource(device_t dev, device_t child, int type, int rid, 912 u_long *startp, u_long *countp) 913 { 914 struct isa_device* idev = DEVTOISA(child); 915 struct resource_list *rl = &idev->id_resources; 916 struct resource_list_entry *rle; 917 918 rle = resource_list_find(rl, type, rid); 919 if (!rle) 920 return ENOENT; 921 922 if (startp) 923 *startp = rle->start; 924 if (countp) 925 *countp = rle->count; 926 927 return 0; 928 } 929 930 static void 931 isa_delete_resource(device_t dev, device_t child, int type, int rid) 932 { 933 struct isa_device* idev = DEVTOISA(child); 934 struct resource_list *rl = &idev->id_resources; 935 resource_list_delete(rl, type, rid); 936 } 937 938 static int 939 isa_add_config(device_t dev, device_t child, 940 int priority, struct isa_config *config) 941 { 942 struct isa_device* idev = DEVTOISA(child); 943 struct isa_config_entry *newice, *ice; 944 945 newice = kmalloc(sizeof *ice, M_DEVBUF, M_WAITOK); 946 newice->ice_priority = priority; 947 newice->ice_config = *config; 948 949 TAILQ_FOREACH(ice, &idev->id_configs, ice_link) { 950 if (ice->ice_priority > priority) 951 break; 952 } 953 if (ice) 954 TAILQ_INSERT_BEFORE(ice, newice, ice_link); 955 else 956 TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link); 957 958 return 0; 959 } 960 961 static void 962 isa_set_config_callback(device_t dev, device_t child, 963 isa_config_cb *fn, void *arg) 964 { 965 struct isa_device* idev = DEVTOISA(child); 966 967 idev->id_config_cb = fn; 968 idev->id_config_arg = arg; 969 } 970 971 static int 972 isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids) 973 { 974 struct isa_device* idev = DEVTOISA(child); 975 976 if (!idev->id_vendorid) 977 return ENOENT; 978 979 while (ids->ip_id) { 980 /* 981 * Really ought to support >1 compat id per device. 982 */ 983 if (idev->id_logicalid == ids->ip_id 984 || idev->id_compatid == ids->ip_id) { 985 if (ids->ip_desc) 986 device_set_desc(child, ids->ip_desc); 987 return 0; 988 } 989 ids++; 990 } 991 992 return ENXIO; 993 } 994 995 static device_method_t isa_methods[] = { 996 /* Device interface */ 997 DEVMETHOD(device_probe, isa_probe), 998 DEVMETHOD(device_attach, isa_attach), 999 DEVMETHOD(device_detach, bus_generic_detach), 1000 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1001 DEVMETHOD(device_suspend, bus_generic_suspend), 1002 DEVMETHOD(device_resume, bus_generic_resume), 1003 1004 /* Bus interface */ 1005 DEVMETHOD(bus_add_child, isa_add_child), 1006 DEVMETHOD(bus_print_child, isa_print_child), 1007 DEVMETHOD(bus_probe_nomatch, isa_probe_nomatch), 1008 DEVMETHOD(bus_read_ivar, isa_read_ivar), 1009 DEVMETHOD(bus_write_ivar, isa_write_ivar), 1010 DEVMETHOD(bus_child_detached, isa_child_detached), 1011 DEVMETHOD(bus_driver_added, isa_driver_added), 1012 DEVMETHOD(bus_alloc_resource, isa_alloc_resource), 1013 DEVMETHOD(bus_release_resource, isa_release_resource), 1014 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 1015 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 1016 DEVMETHOD(bus_setup_intr, isa_setup_intr), 1017 DEVMETHOD(bus_teardown_intr, isa_teardown_intr), 1018 DEVMETHOD(bus_set_resource, isa_set_resource), 1019 DEVMETHOD(bus_get_resource, isa_get_resource), 1020 DEVMETHOD(bus_delete_resource, isa_delete_resource), 1021 1022 /* ISA interface */ 1023 DEVMETHOD(isa_add_config, isa_add_config), 1024 DEVMETHOD(isa_set_config_callback, isa_set_config_callback), 1025 DEVMETHOD(isa_pnp_probe, isa_pnp_probe), 1026 1027 DEVMETHOD_END 1028 }; 1029 1030 static driver_t isa_driver = { 1031 "isa", 1032 isa_methods, 1033 1, /* no softc */ 1034 }; 1035 1036 /* 1037 * ISA can be attached to a PCI-ISA bridge or directly to the nexus. 1038 */ 1039 DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, NULL, NULL); 1040 MODULE_VERSION(isa, 1); 1041 1042 /* 1043 * Code common to ISA bridges. 1044 */ 1045 int 1046 isab_attach(device_t dev) 1047 { 1048 device_t child; 1049 1050 child = device_add_child(dev, "isa", 0); 1051 if (child != NULL) 1052 return (bus_generic_attach(dev)); 1053 return (ENXIO); 1054 } 1055