acpi_resource.c revision 134217
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: head/sys/dev/acpica/acpi_resource.c 134217 2004-08-23 16:28:42Z njl $"); 30 31#include "opt_acpi.h" 32#include <sys/param.h> 33#include <sys/kernel.h> 34#include <sys/bus.h> 35#include <sys/malloc.h> 36#include <sys/module.h> 37 38#include <machine/bus.h> 39#include <machine/resource.h> 40#include <sys/rman.h> 41 42#include "acpi.h" 43#include <dev/acpica/acpivar.h> 44 45/* Hooks for the ACPI CA debugging infrastructure */ 46#define _COMPONENT ACPI_BUS 47ACPI_MODULE_NAME("RESOURCE") 48 49struct lookup_irq_request { 50 ACPI_RESOURCE *acpi_res; 51 struct resource *res; 52 int counter; 53 int rid; 54 int found; 55}; 56 57static ACPI_STATUS 58acpi_lookup_irq_handler(ACPI_RESOURCE *res, void *context) 59{ 60 struct lookup_irq_request *req; 61 u_int irqnum, irq; 62 63 switch (res->Id) { 64 case ACPI_RSTYPE_IRQ: 65 case ACPI_RSTYPE_EXT_IRQ: 66 if (res->Id == ACPI_RSTYPE_IRQ) { 67 irqnum = res->Data.Irq.NumberOfInterrupts; 68 irq = res->Data.Irq.Interrupts[0]; 69 } else { 70 irqnum = res->Data.ExtendedIrq.NumberOfInterrupts; 71 irq = res->Data.ExtendedIrq.Interrupts[0]; 72 } 73 if (irqnum != 1) 74 break; 75 req = (struct lookup_irq_request *)context; 76 if (req->counter != req->rid) { 77 req->counter++; 78 break; 79 } 80 req->found = 1; 81 KASSERT(irq == rman_get_start(req->res), 82 ("IRQ resources do not match")); 83 bcopy(res, req->acpi_res, sizeof(ACPI_RESOURCE)); 84 return (AE_CTRL_TERMINATE); 85 } 86 return (AE_OK); 87} 88 89ACPI_STATUS 90acpi_lookup_irq_resource(device_t dev, int rid, struct resource *res, 91 ACPI_RESOURCE *acpi_res) 92{ 93 struct lookup_irq_request req; 94 ACPI_STATUS status; 95 96 req.acpi_res = acpi_res; 97 req.res = res; 98 req.counter = 0; 99 req.rid = rid; 100 req.found = 0; 101 status = AcpiWalkResources(acpi_get_handle(dev), "_CRS", 102 acpi_lookup_irq_handler, &req); 103 if (ACPI_SUCCESS(status) && req.found == 0) 104 status = AE_NOT_FOUND; 105 return (status); 106} 107 108void 109acpi_config_intr(device_t dev, ACPI_RESOURCE *res) 110{ 111 u_int irq; 112 int pol, trig; 113 114 switch (res->Id) { 115 case ACPI_RSTYPE_IRQ: 116 KASSERT(res->Data.Irq.NumberOfInterrupts == 1, 117 ("%s: multiple interrupts", __func__)); 118 irq = res->Data.Irq.Interrupts[0]; 119 trig = res->Data.Irq.EdgeLevel; 120 pol = res->Data.Irq.ActiveHighLow; 121 break; 122 case ACPI_RSTYPE_EXT_IRQ: 123 KASSERT(res->Data.ExtendedIrq.NumberOfInterrupts == 1, 124 ("%s: multiple interrupts", __func__)); 125 irq = res->Data.ExtendedIrq.Interrupts[0]; 126 trig = res->Data.ExtendedIrq.EdgeLevel; 127 pol = res->Data.ExtendedIrq.ActiveHighLow; 128 break; 129 default: 130 panic("%s: bad resource type %u", __func__, res->Id); 131 } 132 BUS_CONFIG_INTR(dev, irq, (trig == ACPI_EDGE_SENSITIVE) ? 133 INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL, (pol == ACPI_ACTIVE_HIGH) ? 134 INTR_POLARITY_HIGH : INTR_POLARITY_LOW); 135} 136 137/* 138 * Fetch a device's resources and associate them with the device. 139 * 140 * Note that it might be nice to also locate ACPI-specific resource items, such 141 * as GPE bits. 142 * 143 * We really need to split the resource-fetching code out from the 144 * resource-parsing code, since we may want to use the parsing 145 * code for _PRS someday. 146 */ 147ACPI_STATUS 148acpi_parse_resources(device_t dev, ACPI_HANDLE handle, 149 struct acpi_parse_resource_set *set, void *arg) 150{ 151 ACPI_BUFFER buf; 152 ACPI_RESOURCE *res; 153 char *curr, *last; 154 ACPI_STATUS status; 155 void *context; 156 157 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 158 159 /* 160 * Special-case some devices that abuse _PRS/_CRS to mean 161 * something other than "I consume this resource". 162 * 163 * XXX do we really need this? It's only relevant once 164 * we start always-allocating these resources, and even 165 * then, the only special-cased device is likely to be 166 * the PCI interrupt link. 167 */ 168 169 /* Fetch the device's current resources. */ 170 buf.Length = ACPI_ALLOCATE_BUFFER; 171 if (ACPI_FAILURE((status = AcpiGetCurrentResources(handle, &buf)))) { 172 if (status != AE_NOT_FOUND) 173 printf("can't fetch resources for %s - %s\n", 174 acpi_name(handle), AcpiFormatException(status)); 175 return_ACPI_STATUS (status); 176 } 177 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s - got %ld bytes of resources\n", 178 acpi_name(handle), (long)buf.Length)); 179 set->set_init(dev, arg, &context); 180 181 /* Iterate through the resources */ 182 curr = buf.Pointer; 183 last = (char *)buf.Pointer + buf.Length; 184 while (curr < last) { 185 res = (ACPI_RESOURCE *)curr; 186 curr += res->Length; 187 188 /* Handle the individual resource types */ 189 switch(res->Id) { 190 case ACPI_RSTYPE_END_TAG: 191 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n")); 192 curr = last; 193 break; 194 case ACPI_RSTYPE_FIXED_IO: 195 if (res->Data.FixedIo.RangeLength <= 0) 196 break; 197 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedIo 0x%x/%d\n", 198 res->Data.FixedIo.BaseAddress, 199 res->Data.FixedIo.RangeLength)); 200 set->set_ioport(dev, context, 201 res->Data.FixedIo.BaseAddress, 202 res->Data.FixedIo.RangeLength); 203 break; 204 case ACPI_RSTYPE_IO: 205 if (res->Data.Io.RangeLength <= 0) 206 break; 207 if (res->Data.Io.MinBaseAddress == res->Data.Io.MaxBaseAddress) { 208 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x/%d\n", 209 res->Data.Io.MinBaseAddress, 210 res->Data.Io.RangeLength)); 211 set->set_ioport(dev, context, 212 res->Data.Io.MinBaseAddress, 213 res->Data.Io.RangeLength); 214 } else { 215 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x-0x%x/%d\n", 216 res->Data.Io.MinBaseAddress, 217 res->Data.Io.MaxBaseAddress, 218 res->Data.Io.RangeLength)); 219 set->set_iorange(dev, context, 220 res->Data.Io.MinBaseAddress, 221 res->Data.Io.MaxBaseAddress, 222 res->Data.Io.RangeLength, 223 res->Data.Io.Alignment); 224 } 225 break; 226 case ACPI_RSTYPE_FIXED_MEM32: 227 if (res->Data.FixedMemory32.RangeLength <= 0) 228 break; 229 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedMemory32 0x%x/%d\n", 230 res->Data.FixedMemory32.RangeBaseAddress, 231 res->Data.FixedMemory32.RangeLength)); 232 set->set_memory(dev, context, 233 res->Data.FixedMemory32.RangeBaseAddress, 234 res->Data.FixedMemory32.RangeLength); 235 break; 236 case ACPI_RSTYPE_MEM32: 237 if (res->Data.Memory32.RangeLength <= 0) 238 break; 239 if (res->Data.Memory32.MinBaseAddress == 240 res->Data.Memory32.MaxBaseAddress) { 241 242 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x/%d\n", 243 res->Data.Memory32.MinBaseAddress, 244 res->Data.Memory32.RangeLength)); 245 set->set_memory(dev, context, 246 res->Data.Memory32.MinBaseAddress, 247 res->Data.Memory32.RangeLength); 248 } else { 249 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x-0x%x/%d\n", 250 res->Data.Memory32.MinBaseAddress, 251 res->Data.Memory32.MaxBaseAddress, 252 res->Data.Memory32.RangeLength)); 253 set->set_memoryrange(dev, context, 254 res->Data.Memory32.MinBaseAddress, 255 res->Data.Memory32.MaxBaseAddress, 256 res->Data.Memory32.RangeLength, 257 res->Data.Memory32.Alignment); 258 } 259 break; 260 case ACPI_RSTYPE_MEM24: 261 if (res->Data.Memory24.RangeLength <= 0) 262 break; 263 if (res->Data.Memory24.MinBaseAddress == 264 res->Data.Memory24.MaxBaseAddress) { 265 266 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x/%d\n", 267 res->Data.Memory24.MinBaseAddress, 268 res->Data.Memory24.RangeLength)); 269 set->set_memory(dev, context, res->Data.Memory24.MinBaseAddress, 270 res->Data.Memory24.RangeLength); 271 } else { 272 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x-0x%x/%d\n", 273 res->Data.Memory24.MinBaseAddress, 274 res->Data.Memory24.MaxBaseAddress, 275 res->Data.Memory24.RangeLength)); 276 set->set_memoryrange(dev, context, 277 res->Data.Memory24.MinBaseAddress, 278 res->Data.Memory24.MaxBaseAddress, 279 res->Data.Memory24.RangeLength, 280 res->Data.Memory24.Alignment); 281 } 282 break; 283 case ACPI_RSTYPE_IRQ: 284 /* 285 * from 1.0b 6.4.2 286 * "This structure is repeated for each separate interrupt 287 * required" 288 */ 289 set->set_irq(dev, context, res->Data.Irq.Interrupts, 290 res->Data.Irq.NumberOfInterrupts, res->Data.Irq.EdgeLevel, 291 res->Data.Irq.ActiveHighLow); 292 break; 293 case ACPI_RSTYPE_DMA: 294 /* 295 * from 1.0b 6.4.3 296 * "This structure is repeated for each separate dma channel 297 * required" 298 */ 299 set->set_drq(dev, context, res->Data.Dma.Channels, 300 res->Data.Dma.NumberOfChannels); 301 break; 302 case ACPI_RSTYPE_START_DPF: 303 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "start dependant functions\n")); 304 set->set_start_dependant(dev, context, 305 res->Data.StartDpf.CompatibilityPriority); 306 break; 307 case ACPI_RSTYPE_END_DPF: 308 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "end dependant functions\n")); 309 set->set_end_dependant(dev, context); 310 break; 311 case ACPI_RSTYPE_ADDRESS32: 312 if (res->Data.Address32.AddressLength <= 0) 313 break; 314 if (res->Data.Address32.ProducerConsumer != ACPI_CONSUMER) { 315 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 316 "ignored Address32 %s producer\n", 317 res->Data.Address32.ResourceType == ACPI_IO_RANGE ? 318 "IO" : "Memory")); 319 break; 320 } 321 if (res->Data.Address32.ResourceType != ACPI_MEMORY_RANGE && 322 res->Data.Address32.ResourceType != ACPI_IO_RANGE) { 323 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 324 "ignored Address32 for non-memory, non-I/O\n")); 325 break; 326 } 327 328 if (res->Data.Address32.MinAddressFixed == ACPI_ADDRESS_FIXED && 329 res->Data.Address32.MaxAddressFixed == ACPI_ADDRESS_FIXED) { 330 331 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) { 332 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 333 "Address32/Memory 0x%x/%d\n", 334 res->Data.Address32.MinAddressRange, 335 res->Data.Address32.AddressLength)); 336 set->set_memory(dev, context, 337 res->Data.Address32.MinAddressRange, 338 res->Data.Address32.AddressLength); 339 } else { 340 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 341 "Address32/IO 0x%x/%d\n", 342 res->Data.Address32.MinAddressRange, 343 res->Data.Address32.AddressLength)); 344 set->set_ioport(dev, context, 345 res->Data.Address32.MinAddressRange, 346 res->Data.Address32.AddressLength); 347 } 348 } else { 349 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) { 350 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 351 "Address32/Memory 0x%x-0x%x/%d\n", 352 res->Data.Address32.MinAddressRange, 353 res->Data.Address32.MaxAddressRange, 354 res->Data.Address32.AddressLength)); 355 set->set_memoryrange(dev, context, 356 res->Data.Address32.MinAddressRange, 357 res->Data.Address32.MaxAddressRange, 358 res->Data.Address32.AddressLength, 359 res->Data.Address32.Granularity); 360 } else { 361 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 362 "Address32/IO 0x%x-0x%x/%d\n", 363 res->Data.Address32.MinAddressRange, 364 res->Data.Address32.MaxAddressRange, 365 res->Data.Address32.AddressLength)); 366 set->set_iorange(dev, context, 367 res->Data.Address32.MinAddressRange, 368 res->Data.Address32.MaxAddressRange, 369 res->Data.Address32.AddressLength, 370 res->Data.Address32.Granularity); 371 } 372 } 373 break; 374 case ACPI_RSTYPE_ADDRESS16: 375 if (res->Data.Address16.AddressLength <= 0) 376 break; 377 if (res->Data.Address16.ProducerConsumer != ACPI_CONSUMER) { 378 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 379 "ignored Address16 %s producer\n", 380 res->Data.Address16.ResourceType == ACPI_IO_RANGE ? 381 "IO" : "Memory")); 382 break; 383 } 384 if (res->Data.Address16.ResourceType != ACPI_MEMORY_RANGE && 385 res->Data.Address16.ResourceType != ACPI_IO_RANGE) { 386 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 387 "ignored Address16 for non-memory, non-I/O\n")); 388 break; 389 } 390 391 if (res->Data.Address16.MinAddressFixed == ACPI_ADDRESS_FIXED && 392 res->Data.Address16.MaxAddressFixed == ACPI_ADDRESS_FIXED) { 393 394 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) { 395 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 396 "Address16/Memory 0x%x/%d\n", 397 res->Data.Address16.MinAddressRange, 398 res->Data.Address16.AddressLength)); 399 set->set_memory(dev, context, 400 res->Data.Address16.MinAddressRange, 401 res->Data.Address16.AddressLength); 402 } else { 403 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 404 "Address16/IO 0x%x/%d\n", 405 res->Data.Address16.MinAddressRange, 406 res->Data.Address16.AddressLength)); 407 set->set_ioport(dev, context, 408 res->Data.Address16.MinAddressRange, 409 res->Data.Address16.AddressLength); 410 } 411 } else { 412 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) { 413 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 414 "Address16/Memory 0x%x-0x%x/%d\n", 415 res->Data.Address16.MinAddressRange, 416 res->Data.Address16.MaxAddressRange, 417 res->Data.Address16.AddressLength)); 418 set->set_memoryrange(dev, context, 419 res->Data.Address16.MinAddressRange, 420 res->Data.Address16.MaxAddressRange, 421 res->Data.Address16.AddressLength, 422 res->Data.Address16.Granularity); 423 } else { 424 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 425 "Address16/IO 0x%x-0x%x/%d\n", 426 res->Data.Address16.MinAddressRange, 427 res->Data.Address16.MaxAddressRange, 428 res->Data.Address16.AddressLength)); 429 set->set_iorange(dev, context, 430 res->Data.Address16.MinAddressRange, 431 res->Data.Address16.MaxAddressRange, 432 res->Data.Address16.AddressLength, 433 res->Data.Address16.Granularity); 434 } 435 } 436 break; 437 case ACPI_RSTYPE_ADDRESS64: 438 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 439 "unimplemented Address64 resource\n")); 440 break; 441 case ACPI_RSTYPE_EXT_IRQ: 442 /* XXX special handling? */ 443 set->set_irq(dev, context,res->Data.ExtendedIrq.Interrupts, 444 res->Data.ExtendedIrq.NumberOfInterrupts, 445 res->Data.ExtendedIrq.EdgeLevel, 446 res->Data.ExtendedIrq.ActiveHighLow); 447 break; 448 case ACPI_RSTYPE_VENDOR: 449 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 450 "unimplemented VendorSpecific resource\n")); 451 break; 452 default: 453 break; 454 } 455 } 456 457 AcpiOsFree(buf.Pointer); 458 set->set_done(dev, context); 459 return_ACPI_STATUS (AE_OK); 460} 461 462/* 463 * Resource-set vectors used to attach _CRS-derived resources 464 * to an ACPI device. 465 */ 466static void acpi_res_set_init(device_t dev, void *arg, void **context); 467static void acpi_res_set_done(device_t dev, void *context); 468static void acpi_res_set_ioport(device_t dev, void *context, 469 u_int32_t base, u_int32_t length); 470static void acpi_res_set_iorange(device_t dev, void *context, 471 u_int32_t low, u_int32_t high, 472 u_int32_t length, u_int32_t align); 473static void acpi_res_set_memory(device_t dev, void *context, 474 u_int32_t base, u_int32_t length); 475static void acpi_res_set_memoryrange(device_t dev, void *context, 476 u_int32_t low, u_int32_t high, 477 u_int32_t length, u_int32_t align); 478static void acpi_res_set_irq(device_t dev, void *context, u_int32_t *irq, 479 int count, int trig, int pol); 480static void acpi_res_set_drq(device_t dev, void *context, u_int32_t *drq, 481 int count); 482static void acpi_res_set_start_dependant(device_t dev, void *context, 483 int preference); 484static void acpi_res_set_end_dependant(device_t dev, void *context); 485 486struct acpi_parse_resource_set acpi_res_parse_set = { 487 acpi_res_set_init, 488 acpi_res_set_done, 489 acpi_res_set_ioport, 490 acpi_res_set_iorange, 491 acpi_res_set_memory, 492 acpi_res_set_memoryrange, 493 acpi_res_set_irq, 494 acpi_res_set_drq, 495 acpi_res_set_start_dependant, 496 acpi_res_set_end_dependant 497}; 498 499struct acpi_res_context { 500 int ar_nio; 501 int ar_nmem; 502 int ar_nirq; 503 int ar_ndrq; 504 void *ar_parent; 505}; 506 507static void 508acpi_res_set_init(device_t dev, void *arg, void **context) 509{ 510 struct acpi_res_context *cp; 511 512 if ((cp = AcpiOsAllocate(sizeof(*cp))) != NULL) { 513 bzero(cp, sizeof(*cp)); 514 cp->ar_parent = arg; 515 *context = cp; 516 } 517} 518 519static void 520acpi_res_set_done(device_t dev, void *context) 521{ 522 struct acpi_res_context *cp = (struct acpi_res_context *)context; 523 524 if (cp == NULL) 525 return; 526 AcpiOsFree(cp); 527} 528 529static void 530acpi_res_set_ioport(device_t dev, void *context, u_int32_t base, 531 u_int32_t length) 532{ 533 struct acpi_res_context *cp = (struct acpi_res_context *)context; 534 535 if (cp == NULL) 536 return; 537 bus_set_resource(dev, SYS_RES_IOPORT, cp->ar_nio++, base, length); 538} 539 540static void 541acpi_res_set_iorange(device_t dev, void *context, u_int32_t low, 542 u_int32_t high, u_int32_t length, u_int32_t align) 543{ 544 struct acpi_res_context *cp = (struct acpi_res_context *)context; 545 546 if (cp == NULL) 547 return; 548 device_printf(dev, "I/O range not supported\n"); 549} 550 551static void 552acpi_res_set_memory(device_t dev, void *context, u_int32_t base, 553 u_int32_t length) 554{ 555 struct acpi_res_context *cp = (struct acpi_res_context *)context; 556 557 if (cp == NULL) 558 return; 559 560 bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length); 561} 562 563static void 564acpi_res_set_memoryrange(device_t dev, void *context, u_int32_t low, 565 u_int32_t high, u_int32_t length, u_int32_t align) 566{ 567 struct acpi_res_context *cp = (struct acpi_res_context *)context; 568 569 if (cp == NULL) 570 return; 571 device_printf(dev, "memory range not supported\n"); 572} 573 574static void 575acpi_res_set_irq(device_t dev, void *context, u_int32_t *irq, int count, 576 int trig, int pol) 577{ 578 struct acpi_res_context *cp = (struct acpi_res_context *)context; 579 580 if (cp == NULL || irq == NULL) 581 return; 582 583 /* This implements no resource relocation. */ 584 if (count != 1) 585 return; 586 587 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1); 588} 589 590static void 591acpi_res_set_drq(device_t dev, void *context, u_int32_t *drq, int count) 592{ 593 struct acpi_res_context *cp = (struct acpi_res_context *)context; 594 595 if (cp == NULL || drq == NULL) 596 return; 597 598 /* This implements no resource relocation. */ 599 if (count != 1) 600 return; 601 602 bus_set_resource(dev, SYS_RES_DRQ, cp->ar_ndrq++, *drq, 1); 603} 604 605static void 606acpi_res_set_start_dependant(device_t dev, void *context, int preference) 607{ 608 struct acpi_res_context *cp = (struct acpi_res_context *)context; 609 610 if (cp == NULL) 611 return; 612 device_printf(dev, "dependant functions not supported\n"); 613} 614 615static void 616acpi_res_set_end_dependant(device_t dev, void *context) 617{ 618 struct acpi_res_context *cp = (struct acpi_res_context *)context; 619 620 if (cp == NULL) 621 return; 622 device_printf(dev, "dependant functions not supported\n"); 623} 624 625/* 626 * Resource-owning placeholders for IO and memory pseudo-devices. 627 * 628 * This code allocates system resources that will be used by ACPI 629 * child devices. The acpi parent manages these resources through a 630 * private rman. 631 */ 632 633static int acpi_sysres_rid = 100; 634 635static int acpi_sysres_probe(device_t dev); 636static int acpi_sysres_attach(device_t dev); 637 638static device_method_t acpi_sysres_methods[] = { 639 /* Device interface */ 640 DEVMETHOD(device_probe, acpi_sysres_probe), 641 DEVMETHOD(device_attach, acpi_sysres_attach), 642 643 {0, 0} 644}; 645 646static driver_t acpi_sysres_driver = { 647 "acpi_sysresource", 648 acpi_sysres_methods, 649 0, 650}; 651 652static devclass_t acpi_sysres_devclass; 653DRIVER_MODULE(acpi_sysresource, acpi, acpi_sysres_driver, acpi_sysres_devclass, 654 0, 0); 655MODULE_DEPEND(acpi_sysresource, acpi, 1, 1, 1); 656 657static int 658acpi_sysres_probe(device_t dev) 659{ 660 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 661 662 if (acpi_disabled("sysresource") || 663 ACPI_ID_PROBE(device_get_parent(dev), dev, sysres_ids) == NULL) 664 return (ENXIO); 665 666 device_set_desc(dev, "System Resource"); 667 device_quiet(dev); 668 return (-100); 669} 670 671static int 672acpi_sysres_attach(device_t dev) 673{ 674 device_t bus; 675 struct resource_list_entry *bus_rle, *dev_rle; 676 struct resource_list *bus_rl, *dev_rl; 677 int done, type; 678 u_long start, end, count; 679 680 /* 681 * Loop through all current resources to see if the new one overlaps 682 * any existing ones. If so, grow the old one up and/or down 683 * accordingly. Discard any that are wholly contained in the old. If 684 * the resource is unique, add it to the parent. It will later go into 685 * the rman pool. 686 */ 687 bus = device_get_parent(dev); 688 dev_rl = BUS_GET_RESOURCE_LIST(bus, dev); 689 bus_rl = BUS_GET_RESOURCE_LIST(device_get_parent(bus), bus); 690 SLIST_FOREACH(dev_rle, dev_rl, link) { 691 if (dev_rle->type != SYS_RES_IOPORT && dev_rle->type != SYS_RES_MEMORY) 692 continue; 693 694 start = dev_rle->start; 695 end = dev_rle->end; 696 count = dev_rle->count; 697 type = dev_rle->type; 698 done = FALSE; 699 700 SLIST_FOREACH(bus_rle, bus_rl, link) { 701 if (bus_rle->type != type) 702 continue; 703 704 /* New resource wholly contained in old, discard. */ 705 if (start >= bus_rle->start && end <= bus_rle->end) 706 break; 707 708 /* New tail overlaps old head, grow existing resource downward. */ 709 if (start < bus_rle->start && end >= bus_rle->start) { 710 bus_rle->count += bus_rle->start - start; 711 bus_rle->start = start; 712 done = TRUE; 713 } 714 715 /* New head overlaps old tail, grow existing resource upward. */ 716 if (start <= bus_rle->end && end > bus_rle->end) { 717 bus_rle->count += end - bus_rle->end; 718 bus_rle->end = end; 719 done = TRUE; 720 } 721 722 /* If we adjusted the old resource, we're finished. */ 723 if (done) 724 break; 725 } 726 727 /* If we didn't merge with anything, add this resource. */ 728 if (bus_rle == NULL) 729 bus_set_resource(bus, type, acpi_sysres_rid++, start, count); 730 } 731 732 /* After merging/moving resources to the parent, free the list. */ 733 resource_list_free(dev_rl); 734 735 return (0); 736} 737