acpi_resource.c revision 303975
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: releng/11.0/sys/dev/acpica/acpi_resource.c 294883 2016-01-27 02:23:54Z jhibbits $"); 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#ifdef ACPI_DEBUG 187 const char *name; 188#endif 189 device_t dev; 190 191 arc = context; 192 dev = arc->dev; 193 set = arc->set; 194 195 switch (res->Type) { 196 case ACPI_RESOURCE_TYPE_END_TAG: 197 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n")); 198 break; 199 case ACPI_RESOURCE_TYPE_FIXED_IO: 200 if (res->Data.FixedIo.AddressLength <= 0) 201 break; 202 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedIo 0x%x/%d\n", 203 res->Data.FixedIo.Address, res->Data.FixedIo.AddressLength)); 204 set->set_ioport(dev, arc->context, res->Data.FixedIo.Address, 205 res->Data.FixedIo.AddressLength); 206 break; 207 case ACPI_RESOURCE_TYPE_IO: 208 if (res->Data.Io.AddressLength <= 0) 209 break; 210 if (res->Data.Io.Minimum == res->Data.Io.Maximum) { 211 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x/%d\n", 212 res->Data.Io.Minimum, res->Data.Io.AddressLength)); 213 set->set_ioport(dev, arc->context, res->Data.Io.Minimum, 214 res->Data.Io.AddressLength); 215 } else { 216 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x-0x%x/%d\n", 217 res->Data.Io.Minimum, res->Data.Io.Maximum, 218 res->Data.Io.AddressLength)); 219 set->set_iorange(dev, arc->context, res->Data.Io.Minimum, 220 res->Data.Io.Maximum, res->Data.Io.AddressLength, 221 res->Data.Io.Alignment); 222 } 223 break; 224 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: 225 if (res->Data.FixedMemory32.AddressLength <= 0) 226 break; 227 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedMemory32 0x%x/%d\n", 228 res->Data.FixedMemory32.Address, 229 res->Data.FixedMemory32.AddressLength)); 230 set->set_memory(dev, arc->context, res->Data.FixedMemory32.Address, 231 res->Data.FixedMemory32.AddressLength); 232 break; 233 case ACPI_RESOURCE_TYPE_MEMORY32: 234 if (res->Data.Memory32.AddressLength <= 0) 235 break; 236 if (res->Data.Memory32.Minimum == res->Data.Memory32.Maximum) { 237 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x/%d\n", 238 res->Data.Memory32.Minimum, res->Data.Memory32.AddressLength)); 239 set->set_memory(dev, arc->context, res->Data.Memory32.Minimum, 240 res->Data.Memory32.AddressLength); 241 } else { 242 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x-0x%x/%d\n", 243 res->Data.Memory32.Minimum, res->Data.Memory32.Maximum, 244 res->Data.Memory32.AddressLength)); 245 set->set_memoryrange(dev, arc->context, res->Data.Memory32.Minimum, 246 res->Data.Memory32.Maximum, res->Data.Memory32.AddressLength, 247 res->Data.Memory32.Alignment); 248 } 249 break; 250 case ACPI_RESOURCE_TYPE_MEMORY24: 251 if (res->Data.Memory24.AddressLength <= 0) 252 break; 253 if (res->Data.Memory24.Minimum == res->Data.Memory24.Maximum) { 254 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x/%d\n", 255 res->Data.Memory24.Minimum, res->Data.Memory24.AddressLength)); 256 set->set_memory(dev, arc->context, res->Data.Memory24.Minimum, 257 res->Data.Memory24.AddressLength); 258 } else { 259 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x-0x%x/%d\n", 260 res->Data.Memory24.Minimum, res->Data.Memory24.Maximum, 261 res->Data.Memory24.AddressLength)); 262 set->set_memoryrange(dev, arc->context, res->Data.Memory24.Minimum, 263 res->Data.Memory24.Maximum, res->Data.Memory24.AddressLength, 264 res->Data.Memory24.Alignment); 265 } 266 break; 267 case ACPI_RESOURCE_TYPE_IRQ: 268 /* 269 * from 1.0b 6.4.2 270 * "This structure is repeated for each separate interrupt 271 * required" 272 */ 273 set->set_irq(dev, arc->context, res->Data.Irq.Interrupts, 274 res->Data.Irq.InterruptCount, res->Data.Irq.Triggering, 275 res->Data.Irq.Polarity); 276 break; 277 case ACPI_RESOURCE_TYPE_DMA: 278 /* 279 * from 1.0b 6.4.3 280 * "This structure is repeated for each separate DMA channel 281 * required" 282 */ 283 set->set_drq(dev, arc->context, res->Data.Dma.Channels, 284 res->Data.Dma.ChannelCount); 285 break; 286 case ACPI_RESOURCE_TYPE_START_DEPENDENT: 287 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "start dependent functions\n")); 288 set->set_start_dependent(dev, arc->context, 289 res->Data.StartDpf.CompatibilityPriority); 290 break; 291 case ACPI_RESOURCE_TYPE_END_DEPENDENT: 292 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "end dependent functions\n")); 293 set->set_end_dependent(dev, arc->context); 294 break; 295 case ACPI_RESOURCE_TYPE_ADDRESS16: 296 case ACPI_RESOURCE_TYPE_ADDRESS32: 297 case ACPI_RESOURCE_TYPE_ADDRESS64: 298 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: 299 switch (res->Type) { 300 case ACPI_RESOURCE_TYPE_ADDRESS16: 301 gran = res->Data.Address16.Address.Granularity; 302 min = res->Data.Address16.Address.Minimum; 303 max = res->Data.Address16.Address.Maximum; 304 length = res->Data.Address16.Address.AddressLength; 305#ifdef ACPI_DEBUG 306 name = "Address16"; 307#endif 308 break; 309 case ACPI_RESOURCE_TYPE_ADDRESS32: 310 gran = res->Data.Address32.Address.Granularity; 311 min = res->Data.Address32.Address.Minimum; 312 max = res->Data.Address32.Address.Maximum; 313 length = res->Data.Address32.Address.AddressLength; 314#ifdef ACPI_DEBUG 315 name = "Address32"; 316#endif 317 break; 318 case ACPI_RESOURCE_TYPE_ADDRESS64: 319 gran = res->Data.Address64.Address.Granularity; 320 min = res->Data.Address64.Address.Minimum; 321 max = res->Data.Address64.Address.Maximum; 322 length = res->Data.Address64.Address.AddressLength; 323#ifdef ACPI_DEBUG 324 name = "Address64"; 325#endif 326 break; 327 default: 328 KASSERT(res->Type == ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64, 329 ("should never happen")); 330 gran = res->Data.ExtAddress64.Address.Granularity; 331 min = res->Data.ExtAddress64.Address.Minimum; 332 max = res->Data.ExtAddress64.Address.Maximum; 333 length = res->Data.ExtAddress64.Address.AddressLength; 334#ifdef ACPI_DEBUG 335 name = "ExtAddress64"; 336#endif 337 break; 338 } 339 if (length <= 0) 340 break; 341 if (res->Data.Address.ProducerConsumer != ACPI_CONSUMER) { 342 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 343 "ignored %s %s producer\n", name, 344 acpi_address_range_name(res->Data.Address.ResourceType))); 345 break; 346 } 347 if (res->Data.Address.ResourceType != ACPI_MEMORY_RANGE && 348 res->Data.Address.ResourceType != ACPI_IO_RANGE) { 349 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 350 "ignored %s for non-memory, non-I/O\n", name)); 351 break; 352 } 353 354#ifdef __i386__ 355 if (min > ULONG_MAX || (res->Data.Address.MaxAddressFixed && max > 356 ULONG_MAX)) { 357 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "ignored %s above 4G\n", 358 name)); 359 break; 360 } 361 if (max > ULONG_MAX) 362 max = ULONG_MAX; 363#endif 364 if (res->Data.Address.MinAddressFixed == ACPI_ADDRESS_FIXED && 365 res->Data.Address.MaxAddressFixed == ACPI_ADDRESS_FIXED) { 366 if (res->Data.Address.ResourceType == ACPI_MEMORY_RANGE) { 367 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/Memory 0x%jx/%ju\n", 368 name, (uintmax_t)min, (uintmax_t)length)); 369 set->set_memory(dev, arc->context, min, length); 370 } else { 371 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/IO 0x%jx/%ju\n", name, 372 (uintmax_t)min, (uintmax_t)length)); 373 set->set_ioport(dev, arc->context, min, length); 374 } 375 } else { 376 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) { 377 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 378 "%s/Memory 0x%jx-0x%jx/%ju\n", name, (uintmax_t)min, 379 (uintmax_t)max, (uintmax_t)length)); 380 set->set_memoryrange(dev, arc->context, min, max, length, gran); 381 } else { 382 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/IO 0x%jx-0x%jx/%ju\n", 383 name, (uintmax_t)min, (uintmax_t)max, (uintmax_t)length)); 384 set->set_iorange(dev, arc->context, min, max, length, gran); 385 } 386 } 387 break; 388 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 389 if (res->Data.ExtendedIrq.ProducerConsumer != ACPI_CONSUMER) { 390 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "ignored ExtIRQ producer\n")); 391 break; 392 } 393 set->set_ext_irq(dev, arc->context, res->Data.ExtendedIrq.Interrupts, 394 res->Data.ExtendedIrq.InterruptCount, 395 res->Data.ExtendedIrq.Triggering, res->Data.ExtendedIrq.Polarity); 396 break; 397 case ACPI_RESOURCE_TYPE_VENDOR: 398 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 399 "unimplemented VendorSpecific resource\n")); 400 break; 401 default: 402 break; 403 } 404 return (AE_OK); 405} 406 407/* 408 * Fetch a device's resources and associate them with the device. 409 * 410 * Note that it might be nice to also locate ACPI-specific resource items, such 411 * as GPE bits. 412 * 413 * We really need to split the resource-fetching code out from the 414 * resource-parsing code, since we may want to use the parsing 415 * code for _PRS someday. 416 */ 417ACPI_STATUS 418acpi_parse_resources(device_t dev, ACPI_HANDLE handle, 419 struct acpi_parse_resource_set *set, void *arg) 420{ 421 struct acpi_resource_context arc; 422 ACPI_STATUS status; 423 424 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 425 426 set->set_init(dev, arg, &arc.context); 427 arc.set = set; 428 arc.dev = dev; 429 status = AcpiWalkResources(handle, "_CRS", acpi_parse_resource, &arc); 430 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 431 printf("can't fetch resources for %s - %s\n", 432 acpi_name(handle), AcpiFormatException(status)); 433 return_ACPI_STATUS (status); 434 } 435 set->set_done(dev, arc.context); 436 return_ACPI_STATUS (AE_OK); 437} 438 439/* 440 * Resource-set vectors used to attach _CRS-derived resources 441 * to an ACPI device. 442 */ 443static void acpi_res_set_init(device_t dev, void *arg, void **context); 444static void acpi_res_set_done(device_t dev, void *context); 445static void acpi_res_set_ioport(device_t dev, void *context, 446 uint64_t base, uint64_t length); 447static void acpi_res_set_iorange(device_t dev, void *context, 448 uint64_t low, uint64_t high, 449 uint64_t length, uint64_t align); 450static void acpi_res_set_memory(device_t dev, void *context, 451 uint64_t base, uint64_t length); 452static void acpi_res_set_memoryrange(device_t dev, void *context, 453 uint64_t low, uint64_t high, 454 uint64_t length, uint64_t align); 455static void acpi_res_set_irq(device_t dev, void *context, uint8_t *irq, 456 int count, int trig, int pol); 457static void acpi_res_set_ext_irq(device_t dev, void *context, 458 uint32_t *irq, int count, int trig, int pol); 459static void acpi_res_set_drq(device_t dev, void *context, uint8_t *drq, 460 int count); 461static void acpi_res_set_start_dependent(device_t dev, void *context, 462 int preference); 463static void acpi_res_set_end_dependent(device_t dev, void *context); 464 465struct acpi_parse_resource_set acpi_res_parse_set = { 466 acpi_res_set_init, 467 acpi_res_set_done, 468 acpi_res_set_ioport, 469 acpi_res_set_iorange, 470 acpi_res_set_memory, 471 acpi_res_set_memoryrange, 472 acpi_res_set_irq, 473 acpi_res_set_ext_irq, 474 acpi_res_set_drq, 475 acpi_res_set_start_dependent, 476 acpi_res_set_end_dependent 477}; 478 479struct acpi_res_context { 480 int ar_nio; 481 int ar_nmem; 482 int ar_nirq; 483 int ar_ndrq; 484 void *ar_parent; 485}; 486 487static void 488acpi_res_set_init(device_t dev, void *arg, void **context) 489{ 490 struct acpi_res_context *cp; 491 492 if ((cp = AcpiOsAllocate(sizeof(*cp))) != NULL) { 493 bzero(cp, sizeof(*cp)); 494 cp->ar_parent = arg; 495 *context = cp; 496 } 497} 498 499static void 500acpi_res_set_done(device_t dev, void *context) 501{ 502 struct acpi_res_context *cp = (struct acpi_res_context *)context; 503 504 if (cp == NULL) 505 return; 506 AcpiOsFree(cp); 507} 508 509static void 510acpi_res_set_ioport(device_t dev, void *context, uint64_t base, 511 uint64_t length) 512{ 513 struct acpi_res_context *cp = (struct acpi_res_context *)context; 514 515 if (cp == NULL) 516 return; 517 bus_set_resource(dev, SYS_RES_IOPORT, cp->ar_nio++, base, length); 518} 519 520static void 521acpi_res_set_iorange(device_t dev, void *context, uint64_t low, 522 uint64_t high, uint64_t length, uint64_t align) 523{ 524 struct acpi_res_context *cp = (struct acpi_res_context *)context; 525 526 if (cp == NULL) 527 return; 528 device_printf(dev, "I/O range not supported\n"); 529} 530 531static void 532acpi_res_set_memory(device_t dev, void *context, uint64_t base, 533 uint64_t length) 534{ 535 struct acpi_res_context *cp = (struct acpi_res_context *)context; 536 537 if (cp == NULL) 538 return; 539 540 bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length); 541} 542 543static void 544acpi_res_set_memoryrange(device_t dev, void *context, uint64_t low, 545 uint64_t high, uint64_t length, uint64_t align) 546{ 547 struct acpi_res_context *cp = (struct acpi_res_context *)context; 548 549 if (cp == NULL) 550 return; 551 device_printf(dev, "memory range not supported\n"); 552} 553 554static void 555acpi_res_set_irq(device_t dev, void *context, uint8_t *irq, int count, 556 int trig, int pol) 557{ 558 struct acpi_res_context *cp = (struct acpi_res_context *)context; 559 560 if (cp == NULL || irq == NULL) 561 return; 562 563 /* This implements no resource relocation. */ 564 if (count != 1) 565 return; 566 567 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1); 568} 569 570static void 571acpi_res_set_ext_irq(device_t dev, void *context, uint32_t *irq, int count, 572 int trig, int pol) 573{ 574 struct acpi_res_context *cp = (struct acpi_res_context *)context; 575 576 if (cp == NULL || irq == NULL) 577 return; 578 579 /* This implements no resource relocation. */ 580 if (count != 1) 581 return; 582 583 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1); 584} 585 586static void 587acpi_res_set_drq(device_t dev, void *context, uint8_t *drq, int count) 588{ 589 struct acpi_res_context *cp = (struct acpi_res_context *)context; 590 591 if (cp == NULL || drq == NULL) 592 return; 593 594 /* This implements no resource relocation. */ 595 if (count != 1) 596 return; 597 598 bus_set_resource(dev, SYS_RES_DRQ, cp->ar_ndrq++, *drq, 1); 599} 600 601static void 602acpi_res_set_start_dependent(device_t dev, void *context, int preference) 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 611static void 612acpi_res_set_end_dependent(device_t dev, void *context) 613{ 614 struct acpi_res_context *cp = (struct acpi_res_context *)context; 615 616 if (cp == NULL) 617 return; 618 device_printf(dev, "dependent functions not supported\n"); 619} 620 621/* 622 * Resource-owning placeholders for IO and memory pseudo-devices. 623 * 624 * This code allocates system resources that will be used by ACPI 625 * child devices. The acpi parent manages these resources through a 626 * private rman. 627 */ 628 629static int acpi_sysres_rid = 100; 630 631static int acpi_sysres_probe(device_t dev); 632static int acpi_sysres_attach(device_t dev); 633 634static device_method_t acpi_sysres_methods[] = { 635 /* Device interface */ 636 DEVMETHOD(device_probe, acpi_sysres_probe), 637 DEVMETHOD(device_attach, acpi_sysres_attach), 638 639 DEVMETHOD_END 640}; 641 642static driver_t acpi_sysres_driver = { 643 "acpi_sysresource", 644 acpi_sysres_methods, 645 0, 646}; 647 648static devclass_t acpi_sysres_devclass; 649DRIVER_MODULE(acpi_sysresource, acpi, acpi_sysres_driver, acpi_sysres_devclass, 650 0, 0); 651MODULE_DEPEND(acpi_sysresource, acpi, 1, 1, 1); 652 653static int 654acpi_sysres_probe(device_t dev) 655{ 656 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 657 658 if (acpi_disabled("sysresource") || 659 ACPI_ID_PROBE(device_get_parent(dev), dev, sysres_ids) == NULL) 660 return (ENXIO); 661 662 device_set_desc(dev, "System Resource"); 663 device_quiet(dev); 664 return (BUS_PROBE_DEFAULT); 665} 666 667static int 668acpi_sysres_attach(device_t dev) 669{ 670 device_t bus; 671 struct resource_list_entry *bus_rle, *dev_rle; 672 struct resource_list *bus_rl, *dev_rl; 673 int done, type; 674 rman_res_t start, end, count; 675 676 /* 677 * Loop through all current resources to see if the new one overlaps 678 * any existing ones. If so, grow the old one up and/or down 679 * accordingly. Discard any that are wholly contained in the old. If 680 * the resource is unique, add it to the parent. It will later go into 681 * the rman pool. 682 */ 683 bus = device_get_parent(dev); 684 dev_rl = BUS_GET_RESOURCE_LIST(bus, dev); 685 bus_rl = BUS_GET_RESOURCE_LIST(device_get_parent(bus), bus); 686 STAILQ_FOREACH(dev_rle, dev_rl, link) { 687 if (dev_rle->type != SYS_RES_IOPORT && dev_rle->type != SYS_RES_MEMORY) 688 continue; 689 690 start = dev_rle->start; 691 end = dev_rle->end; 692 count = dev_rle->count; 693 type = dev_rle->type; 694 done = FALSE; 695 696 STAILQ_FOREACH(bus_rle, bus_rl, link) { 697 if (bus_rle->type != type) 698 continue; 699 700 /* New resource wholly contained in old, discard. */ 701 if (start >= bus_rle->start && end <= bus_rle->end) 702 break; 703 704 /* New tail overlaps old head, grow existing resource downward. */ 705 if (start < bus_rle->start && end >= bus_rle->start) { 706 bus_rle->count += bus_rle->start - start; 707 bus_rle->start = start; 708 done = TRUE; 709 } 710 711 /* New head overlaps old tail, grow existing resource upward. */ 712 if (start <= bus_rle->end && end > bus_rle->end) { 713 bus_rle->count += end - bus_rle->end; 714 bus_rle->end = end; 715 done = TRUE; 716 } 717 718 /* If we adjusted the old resource, we're finished. */ 719 if (done) 720 break; 721 } 722 723 /* If we didn't merge with anything, add this resource. */ 724 if (bus_rle == NULL) 725 bus_set_resource(bus, type, acpi_sysres_rid++, start, count); 726 } 727 728 /* After merging/moving resources to the parent, free the list. */ 729 resource_list_free(dev_rl); 730 731 return (0); 732} 733