1/*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD$"); 30 31#include "opt_acpi.h" 32#include <sys/param.h> 33#include <sys/kernel.h> 34#include <sys/bus.h> 35#include <sys/limits.h> 36#include <sys/malloc.h> 37#include <sys/module.h> 38 39#include <machine/bus.h> 40#include <machine/resource.h> 41#include <sys/rman.h> 42 43#include <contrib/dev/acpica/include/acpi.h> 44#include <contrib/dev/acpica/include/accommon.h> 45 46#include <dev/acpica/acpivar.h> 47 48/* Hooks for the ACPI CA debugging infrastructure */ 49#define _COMPONENT ACPI_BUS 50ACPI_MODULE_NAME("RESOURCE") 51 52struct lookup_irq_request { 53 ACPI_RESOURCE *acpi_res; 54 struct resource *res; 55 int counter; 56 int rid; 57 int found; 58}; 59 60static ACPI_STATUS 61acpi_lookup_irq_handler(ACPI_RESOURCE *res, void *context) 62{ 63 struct lookup_irq_request *req; 64 size_t len; 65 u_int irqnum, irq; 66 67 switch (res->Type) { 68 case ACPI_RESOURCE_TYPE_IRQ: 69 irqnum = res->Data.Irq.InterruptCount; 70 irq = res->Data.Irq.Interrupts[0]; 71 len = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 72 break; 73 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 74 irqnum = res->Data.ExtendedIrq.InterruptCount; 75 irq = res->Data.ExtendedIrq.Interrupts[0]; 76 len = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 77 break; 78 default: 79 return (AE_OK); 80 } 81 if (irqnum != 1) 82 return (AE_OK); 83 req = (struct lookup_irq_request *)context; 84 if (req->counter != req->rid) { 85 req->counter++; 86 return (AE_OK); 87 } 88 req->found = 1; 89 KASSERT(irq == rman_get_start(req->res), 90 ("IRQ resources do not match")); 91 bcopy(res, req->acpi_res, len); 92 return (AE_CTRL_TERMINATE); 93} 94 95ACPI_STATUS 96acpi_lookup_irq_resource(device_t dev, int rid, struct resource *res, 97 ACPI_RESOURCE *acpi_res) 98{ 99 struct lookup_irq_request req; 100 ACPI_STATUS status; 101 102 req.acpi_res = acpi_res; 103 req.res = res; 104 req.counter = 0; 105 req.rid = rid; 106 req.found = 0; 107 status = AcpiWalkResources(acpi_get_handle(dev), "_CRS", 108 acpi_lookup_irq_handler, &req); 109 if (ACPI_SUCCESS(status) && req.found == 0) 110 status = AE_NOT_FOUND; 111 return (status); 112} 113 114void 115acpi_config_intr(device_t dev, ACPI_RESOURCE *res) 116{ 117 u_int irq; 118 int pol, trig; 119 120 switch (res->Type) { 121 case ACPI_RESOURCE_TYPE_IRQ: 122 KASSERT(res->Data.Irq.InterruptCount == 1, 123 ("%s: multiple interrupts", __func__)); 124 irq = res->Data.Irq.Interrupts[0]; 125 trig = res->Data.Irq.Triggering; 126 pol = res->Data.Irq.Polarity; 127 break; 128 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 129 KASSERT(res->Data.ExtendedIrq.InterruptCount == 1, 130 ("%s: multiple interrupts", __func__)); 131 irq = res->Data.ExtendedIrq.Interrupts[0]; 132 trig = res->Data.ExtendedIrq.Triggering; 133 pol = res->Data.ExtendedIrq.Polarity; 134 break; 135 default: 136 panic("%s: bad resource type %u", __func__, res->Type); 137 } 138 139#if defined(__amd64__) || defined(__i386__) 140 /* 141 * XXX: Certain BIOSes have buggy AML that specify an IRQ that is 142 * edge-sensitive and active-lo. However, edge-sensitive IRQs 143 * should be active-hi. Force IRQs with an ISA IRQ value to be 144 * active-hi instead. 145 */ 146 if (irq < 16 && trig == ACPI_EDGE_SENSITIVE && pol == ACPI_ACTIVE_LOW) 147 pol = ACPI_ACTIVE_HIGH; 148#endif 149 BUS_CONFIG_INTR(dev, irq, (trig == ACPI_EDGE_SENSITIVE) ? 150 INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL, (pol == ACPI_ACTIVE_HIGH) ? 151 INTR_POLARITY_HIGH : INTR_POLARITY_LOW); 152} 153 154struct acpi_resource_context { 155 struct acpi_parse_resource_set *set; 156 device_t dev; 157 void *context; 158}; 159 160#ifdef ACPI_DEBUG_OUTPUT 161static const char * 162acpi_address_range_name(UINT8 ResourceType) 163{ 164 static char buf[16]; 165 166 switch (ResourceType) { 167 case ACPI_MEMORY_RANGE: 168 return ("Memory"); 169 case ACPI_IO_RANGE: 170 return ("IO"); 171 case ACPI_BUS_NUMBER_RANGE: 172 return ("Bus Number"); 173 default: 174 snprintf(buf, sizeof(buf), "type %u", ResourceType); 175 return (buf); 176 } 177} 178#endif 179 180static ACPI_STATUS 181acpi_parse_resource(ACPI_RESOURCE *res, void *context) 182{ 183 struct acpi_parse_resource_set *set; 184 struct acpi_resource_context *arc; 185 UINT64 min, max, length, gran; 186 const char *name; 187 device_t dev; 188 189 arc = context; 190 dev = arc->dev; 191 set = arc->set; 192 193 switch (res->Type) { 194 case ACPI_RESOURCE_TYPE_END_TAG: 195 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n")); 196 break; 197 case ACPI_RESOURCE_TYPE_FIXED_IO: 198 if (res->Data.FixedIo.AddressLength <= 0) 199 break; 200 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedIo 0x%x/%d\n", 201 res->Data.FixedIo.Address, res->Data.FixedIo.AddressLength)); 202 set->set_ioport(dev, arc->context, res->Data.FixedIo.Address, 203 res->Data.FixedIo.AddressLength); 204 break; 205 case ACPI_RESOURCE_TYPE_IO: 206 if (res->Data.Io.AddressLength <= 0) 207 break; 208 if (res->Data.Io.Minimum == res->Data.Io.Maximum) { 209 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x/%d\n", 210 res->Data.Io.Minimum, res->Data.Io.AddressLength)); 211 set->set_ioport(dev, arc->context, res->Data.Io.Minimum, 212 res->Data.Io.AddressLength); 213 } else { 214 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x-0x%x/%d\n", 215 res->Data.Io.Minimum, res->Data.Io.Maximum, 216 res->Data.Io.AddressLength)); 217 set->set_iorange(dev, arc->context, res->Data.Io.Minimum, 218 res->Data.Io.Maximum, res->Data.Io.AddressLength, 219 res->Data.Io.Alignment); 220 } 221 break; 222 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: 223 if (res->Data.FixedMemory32.AddressLength <= 0) 224 break; 225 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedMemory32 0x%x/%d\n", 226 res->Data.FixedMemory32.Address, 227 res->Data.FixedMemory32.AddressLength)); 228 set->set_memory(dev, arc->context, res->Data.FixedMemory32.Address, 229 res->Data.FixedMemory32.AddressLength); 230 break; 231 case ACPI_RESOURCE_TYPE_MEMORY32: 232 if (res->Data.Memory32.AddressLength <= 0) 233 break; 234 if (res->Data.Memory32.Minimum == res->Data.Memory32.Maximum) { 235 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x/%d\n", 236 res->Data.Memory32.Minimum, res->Data.Memory32.AddressLength)); 237 set->set_memory(dev, arc->context, res->Data.Memory32.Minimum, 238 res->Data.Memory32.AddressLength); 239 } else { 240 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x-0x%x/%d\n", 241 res->Data.Memory32.Minimum, res->Data.Memory32.Maximum, 242 res->Data.Memory32.AddressLength)); 243 set->set_memoryrange(dev, arc->context, res->Data.Memory32.Minimum, 244 res->Data.Memory32.Maximum, res->Data.Memory32.AddressLength, 245 res->Data.Memory32.Alignment); 246 } 247 break; 248 case ACPI_RESOURCE_TYPE_MEMORY24: 249 if (res->Data.Memory24.AddressLength <= 0) 250 break; 251 if (res->Data.Memory24.Minimum == res->Data.Memory24.Maximum) { 252 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x/%d\n", 253 res->Data.Memory24.Minimum, res->Data.Memory24.AddressLength)); 254 set->set_memory(dev, arc->context, res->Data.Memory24.Minimum, 255 res->Data.Memory24.AddressLength); 256 } else { 257 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x-0x%x/%d\n", 258 res->Data.Memory24.Minimum, res->Data.Memory24.Maximum, 259 res->Data.Memory24.AddressLength)); 260 set->set_memoryrange(dev, arc->context, res->Data.Memory24.Minimum, 261 res->Data.Memory24.Maximum, res->Data.Memory24.AddressLength, 262 res->Data.Memory24.Alignment); 263 } 264 break; 265 case ACPI_RESOURCE_TYPE_IRQ: 266 /* 267 * from 1.0b 6.4.2 268 * "This structure is repeated for each separate interrupt 269 * required" 270 */ 271 set->set_irq(dev, arc->context, res->Data.Irq.Interrupts, 272 res->Data.Irq.InterruptCount, res->Data.Irq.Triggering, 273 res->Data.Irq.Polarity); 274 break; 275 case ACPI_RESOURCE_TYPE_DMA: 276 /* 277 * from 1.0b 6.4.3 278 * "This structure is repeated for each separate DMA channel 279 * required" 280 */ 281 set->set_drq(dev, arc->context, res->Data.Dma.Channels, 282 res->Data.Dma.ChannelCount); 283 break; 284 case ACPI_RESOURCE_TYPE_START_DEPENDENT: 285 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "start dependent functions\n")); 286 set->set_start_dependent(dev, arc->context, 287 res->Data.StartDpf.CompatibilityPriority); 288 break; 289 case ACPI_RESOURCE_TYPE_END_DEPENDENT: 290 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "end dependent functions\n")); 291 set->set_end_dependent(dev, arc->context); 292 break; 293 case ACPI_RESOURCE_TYPE_ADDRESS16: 294 case ACPI_RESOURCE_TYPE_ADDRESS32: 295 case ACPI_RESOURCE_TYPE_ADDRESS64: 296 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: 297 switch (res->Type) { 298 case ACPI_RESOURCE_TYPE_ADDRESS16: 299 gran = res->Data.Address16.Granularity; 300 min = res->Data.Address16.Minimum; 301 max = res->Data.Address16.Maximum; 302 length = res->Data.Address16.AddressLength; 303 name = "Address16"; 304 break; 305 case ACPI_RESOURCE_TYPE_ADDRESS32: 306 gran = res->Data.Address32.Granularity; 307 min = res->Data.Address32.Minimum; 308 max = res->Data.Address32.Maximum; 309 length = res->Data.Address32.AddressLength; 310 name = "Address32"; 311 break; 312 case ACPI_RESOURCE_TYPE_ADDRESS64: 313 gran = res->Data.Address64.Granularity; 314 min = res->Data.Address64.Minimum; 315 max = res->Data.Address64.Maximum; 316 length = res->Data.Address64.AddressLength; 317 name = "Address64"; 318 break; 319 default: 320 KASSERT(res->Type == ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64, 321 ("should never happen")); 322 gran = res->Data.ExtAddress64.Granularity; 323 min = res->Data.ExtAddress64.Minimum; 324 max = res->Data.ExtAddress64.Maximum; 325 length = res->Data.ExtAddress64.AddressLength; 326 name = "ExtAddress64"; 327 break; 328 } 329 if (length <= 0) 330 break; 331 if (res->Data.Address.ProducerConsumer != ACPI_CONSUMER) { 332 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 333 "ignored %s %s producer\n", name, 334 acpi_address_range_name(res->Data.Address.ResourceType))); 335 break; 336 } 337 if (res->Data.Address.ResourceType != ACPI_MEMORY_RANGE && 338 res->Data.Address.ResourceType != ACPI_IO_RANGE) { 339 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 340 "ignored %s for non-memory, non-I/O\n", name)); 341 break; 342 } 343 344#ifdef __i386__ 345 if (min > ULONG_MAX || (res->Data.Address.MaxAddressFixed && max > 346 ULONG_MAX)) { 347 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "ignored %s above 4G\n", 348 name)); 349 break; 350 } 351 if (max > ULONG_MAX) 352 max = ULONG_MAX; 353#endif 354 if (res->Data.Address.MinAddressFixed == ACPI_ADDRESS_FIXED && 355 res->Data.Address.MaxAddressFixed == ACPI_ADDRESS_FIXED) { 356 if (res->Data.Address.ResourceType == ACPI_MEMORY_RANGE) { 357 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/Memory 0x%jx/%ju\n", 358 name, (uintmax_t)min, (uintmax_t)length)); 359 set->set_memory(dev, arc->context, min, length); 360 } else { 361 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/IO 0x%jx/%ju\n", name, 362 (uintmax_t)min, (uintmax_t)length)); 363 set->set_ioport(dev, arc->context, min, length); 364 } 365 } else { 366 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) { 367 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 368 "%s/Memory 0x%jx-0x%jx/%ju\n", name, (uintmax_t)min, 369 (uintmax_t)max, (uintmax_t)length)); 370 set->set_memoryrange(dev, arc->context, min, max, length, gran); 371 } else { 372 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/IO 0x%jx-0x%jx/%ju\n", 373 name, (uintmax_t)min, (uintmax_t)max, (uintmax_t)length)); 374 set->set_iorange(dev, arc->context, min, max, length, gran); 375 } 376 } 377 break; 378 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 379 if (res->Data.ExtendedIrq.ProducerConsumer != ACPI_CONSUMER) { 380 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "ignored ExtIRQ producer\n")); 381 break; 382 } 383 set->set_ext_irq(dev, arc->context, res->Data.ExtendedIrq.Interrupts, 384 res->Data.ExtendedIrq.InterruptCount, 385 res->Data.ExtendedIrq.Triggering, res->Data.ExtendedIrq.Polarity); 386 break; 387 case ACPI_RESOURCE_TYPE_VENDOR: 388 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 389 "unimplemented VendorSpecific resource\n")); 390 break; 391 default: 392 break; 393 } 394 return (AE_OK); 395} 396 397/* 398 * Fetch a device's resources and associate them with the device. 399 * 400 * Note that it might be nice to also locate ACPI-specific resource items, such 401 * as GPE bits. 402 * 403 * We really need to split the resource-fetching code out from the 404 * resource-parsing code, since we may want to use the parsing 405 * code for _PRS someday. 406 */ 407ACPI_STATUS 408acpi_parse_resources(device_t dev, ACPI_HANDLE handle, 409 struct acpi_parse_resource_set *set, void *arg) 410{ 411 struct acpi_resource_context arc; 412 ACPI_STATUS status; 413 414 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 415 416 set->set_init(dev, arg, &arc.context); 417 arc.set = set; 418 arc.dev = dev; 419 status = AcpiWalkResources(handle, "_CRS", acpi_parse_resource, &arc); 420 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 421 printf("can't fetch resources for %s - %s\n", 422 acpi_name(handle), AcpiFormatException(status)); 423 return_ACPI_STATUS (status); 424 } 425 set->set_done(dev, arc.context); 426 return_ACPI_STATUS (AE_OK); 427} 428 429/* 430 * Resource-set vectors used to attach _CRS-derived resources 431 * to an ACPI device. 432 */ 433static void acpi_res_set_init(device_t dev, void *arg, void **context); 434static void acpi_res_set_done(device_t dev, void *context); 435static void acpi_res_set_ioport(device_t dev, void *context, 436 uint64_t base, uint64_t length); 437static void acpi_res_set_iorange(device_t dev, void *context, 438 uint64_t low, uint64_t high, 439 uint64_t length, uint64_t align); 440static void acpi_res_set_memory(device_t dev, void *context, 441 uint64_t base, uint64_t length); 442static void acpi_res_set_memoryrange(device_t dev, void *context, 443 uint64_t low, uint64_t high, 444 uint64_t length, uint64_t align); 445static void acpi_res_set_irq(device_t dev, void *context, uint8_t *irq, 446 int count, int trig, int pol); 447static void acpi_res_set_ext_irq(device_t dev, void *context, 448 uint32_t *irq, int count, int trig, int pol); 449static void acpi_res_set_drq(device_t dev, void *context, uint8_t *drq, 450 int count); 451static void acpi_res_set_start_dependent(device_t dev, void *context, 452 int preference); 453static void acpi_res_set_end_dependent(device_t dev, void *context); 454 455struct acpi_parse_resource_set acpi_res_parse_set = { 456 acpi_res_set_init, 457 acpi_res_set_done, 458 acpi_res_set_ioport, 459 acpi_res_set_iorange, 460 acpi_res_set_memory, 461 acpi_res_set_memoryrange, 462 acpi_res_set_irq, 463 acpi_res_set_ext_irq, 464 acpi_res_set_drq, 465 acpi_res_set_start_dependent, 466 acpi_res_set_end_dependent 467}; 468 469struct acpi_res_context { 470 int ar_nio; 471 int ar_nmem; 472 int ar_nirq; 473 int ar_ndrq; 474 void *ar_parent; 475}; 476 477static void 478acpi_res_set_init(device_t dev, void *arg, void **context) 479{ 480 struct acpi_res_context *cp; 481 482 if ((cp = AcpiOsAllocate(sizeof(*cp))) != NULL) { 483 bzero(cp, sizeof(*cp)); 484 cp->ar_parent = arg; 485 *context = cp; 486 } 487} 488 489static void 490acpi_res_set_done(device_t dev, void *context) 491{ 492 struct acpi_res_context *cp = (struct acpi_res_context *)context; 493 494 if (cp == NULL) 495 return; 496 AcpiOsFree(cp); 497} 498 499static void 500acpi_res_set_ioport(device_t dev, void *context, uint64_t base, 501 uint64_t length) 502{ 503 struct acpi_res_context *cp = (struct acpi_res_context *)context; 504 505 if (cp == NULL) 506 return; 507 bus_set_resource(dev, SYS_RES_IOPORT, cp->ar_nio++, base, length); 508} 509 510static void 511acpi_res_set_iorange(device_t dev, void *context, uint64_t low, 512 uint64_t high, uint64_t length, uint64_t align) 513{ 514 struct acpi_res_context *cp = (struct acpi_res_context *)context; 515 516 if (cp == NULL) 517 return; 518 device_printf(dev, "I/O range not supported\n"); 519} 520 521static void 522acpi_res_set_memory(device_t dev, void *context, uint64_t base, 523 uint64_t length) 524{ 525 struct acpi_res_context *cp = (struct acpi_res_context *)context; 526 527 if (cp == NULL) 528 return; 529 530 bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length); 531} 532 533static void 534acpi_res_set_memoryrange(device_t dev, void *context, uint64_t low, 535 uint64_t high, uint64_t length, uint64_t align) 536{ 537 struct acpi_res_context *cp = (struct acpi_res_context *)context; 538 539 if (cp == NULL) 540 return; 541 device_printf(dev, "memory range not supported\n"); 542} 543 544static void 545acpi_res_set_irq(device_t dev, void *context, uint8_t *irq, int count, 546 int trig, int pol) 547{ 548 struct acpi_res_context *cp = (struct acpi_res_context *)context; 549 550 if (cp == NULL || irq == NULL) 551 return; 552 553 /* This implements no resource relocation. */ 554 if (count != 1) 555 return; 556 557 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1); 558} 559 560static void 561acpi_res_set_ext_irq(device_t dev, void *context, uint32_t *irq, int count, 562 int trig, int pol) 563{ 564 struct acpi_res_context *cp = (struct acpi_res_context *)context; 565 566 if (cp == NULL || irq == NULL) 567 return; 568 569 /* This implements no resource relocation. */ 570 if (count != 1) 571 return; 572 573 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1); 574} 575 576static void 577acpi_res_set_drq(device_t dev, void *context, uint8_t *drq, int count) 578{ 579 struct acpi_res_context *cp = (struct acpi_res_context *)context; 580 581 if (cp == NULL || drq == NULL) 582 return; 583 584 /* This implements no resource relocation. */ 585 if (count != 1) 586 return; 587 588 bus_set_resource(dev, SYS_RES_DRQ, cp->ar_ndrq++, *drq, 1); 589} 590 591static void 592acpi_res_set_start_dependent(device_t dev, void *context, int preference) 593{ 594 struct acpi_res_context *cp = (struct acpi_res_context *)context; 595 596 if (cp == NULL) 597 return; 598 device_printf(dev, "dependent functions not supported\n"); 599} 600 601static void 602acpi_res_set_end_dependent(device_t dev, void *context) 603{ 604 struct acpi_res_context *cp = (struct acpi_res_context *)context; 605 606 if (cp == NULL) 607 return; 608 device_printf(dev, "dependent functions not supported\n"); 609} 610 611/* 612 * Resource-owning placeholders for IO and memory pseudo-devices. 613 * 614 * This code allocates system resources that will be used by ACPI 615 * child devices. The acpi parent manages these resources through a 616 * private rman. 617 */ 618 619static int acpi_sysres_rid = 100; 620 621static int acpi_sysres_probe(device_t dev); 622static int acpi_sysres_attach(device_t dev); 623 624static device_method_t acpi_sysres_methods[] = { 625 /* Device interface */ 626 DEVMETHOD(device_probe, acpi_sysres_probe), 627 DEVMETHOD(device_attach, acpi_sysres_attach), 628 629 {0, 0} 630}; 631 632static driver_t acpi_sysres_driver = { 633 "acpi_sysresource", 634 acpi_sysres_methods, 635 0, 636}; 637 638static devclass_t acpi_sysres_devclass; 639DRIVER_MODULE(acpi_sysresource, acpi, acpi_sysres_driver, acpi_sysres_devclass, 640 0, 0); 641MODULE_DEPEND(acpi_sysresource, acpi, 1, 1, 1); 642 643static int 644acpi_sysres_probe(device_t dev) 645{ 646 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 647 648 if (acpi_disabled("sysresource") || 649 ACPI_ID_PROBE(device_get_parent(dev), dev, sysres_ids) == NULL) 650 return (ENXIO); 651 652 device_set_desc(dev, "System Resource"); 653 device_quiet(dev); 654 return (BUS_PROBE_DEFAULT); 655} 656 657static int 658acpi_sysres_attach(device_t dev) 659{ 660 device_t bus; 661 struct resource_list_entry *bus_rle, *dev_rle; 662 struct resource_list *bus_rl, *dev_rl; 663 int done, type; 664 u_long start, end, count; 665 666 /* 667 * Loop through all current resources to see if the new one overlaps 668 * any existing ones. If so, grow the old one up and/or down 669 * accordingly. Discard any that are wholly contained in the old. If 670 * the resource is unique, add it to the parent. It will later go into 671 * the rman pool. 672 */ 673 bus = device_get_parent(dev); 674 dev_rl = BUS_GET_RESOURCE_LIST(bus, dev); 675 bus_rl = BUS_GET_RESOURCE_LIST(device_get_parent(bus), bus); 676 STAILQ_FOREACH(dev_rle, dev_rl, link) { 677 if (dev_rle->type != SYS_RES_IOPORT && dev_rle->type != SYS_RES_MEMORY) 678 continue; 679 680 start = dev_rle->start; 681 end = dev_rle->end; 682 count = dev_rle->count; 683 type = dev_rle->type; 684 done = FALSE; 685 686 STAILQ_FOREACH(bus_rle, bus_rl, link) { 687 if (bus_rle->type != type) 688 continue; 689 690 /* New resource wholly contained in old, discard. */ 691 if (start >= bus_rle->start && end <= bus_rle->end) 692 break; 693 694 /* New tail overlaps old head, grow existing resource downward. */ 695 if (start < bus_rle->start && end >= bus_rle->start) { 696 bus_rle->count += bus_rle->start - start; 697 bus_rle->start = start; 698 done = TRUE; 699 } 700 701 /* New head overlaps old tail, grow existing resource upward. */ 702 if (start <= bus_rle->end && end > bus_rle->end) { 703 bus_rle->count += end - bus_rle->end; 704 bus_rle->end = end; 705 done = TRUE; 706 } 707 708 /* If we adjusted the old resource, we're finished. */ 709 if (done) 710 break; 711 } 712 713 /* If we didn't merge with anything, add this resource. */ 714 if (bus_rle == NULL) 715 bus_set_resource(bus, type, acpi_sysres_rid++, start, count); 716 } 717 718 /* After merging/moving resources to the parent, free the list. */ 719 resource_list_free(dev_rl); 720 721 return (0); 722} 723