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 * $FreeBSD: head/sys/dev/acpica/acpi_resource.c 263975 2014-03-31 19:37:39Z imp $ 28 */ 29 30 #include "opt_acpi.h" 31 #include <sys/param.h> 32 #include <sys/kernel.h> 33 #include <sys/bus.h> 34 #include <sys/limits.h> 35 #include <sys/malloc.h> 36 #include <sys/module.h> 37 #include <sys/resource.h> 38 #include <sys/machintr.h> 39 40 #include <sys/rman.h> 41 42 #include "acpi.h" 43 #include <dev/acpica/acpivar.h> 44 45 /* Hooks for the ACPICA debugging infrastructure */ 46 #define _COMPONENT ACPI_BUS 47 ACPI_MODULE_NAME("RESOURCE") 48 49 struct lookup_irq_request { 50 ACPI_RESOURCE *acpi_res; 51 struct resource *res; 52 int counter; 53 int rid; 54 int found; 55 }; 56 57 static ACPI_STATUS 58 acpi_lookup_irq_handler(ACPI_RESOURCE *res, void *context) 59 { 60 struct lookup_irq_request *req; 61 size_t len; 62 u_int irqnum; 63 u_int irq __debugvar; 64 65 switch (res->Type) { 66 case ACPI_RESOURCE_TYPE_IRQ: 67 irqnum = res->Data.Irq.InterruptCount; 68 irq = res->Data.Irq.Interrupts[0]; 69 len = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 70 break; 71 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 72 irqnum = res->Data.ExtendedIrq.InterruptCount; 73 irq = res->Data.ExtendedIrq.Interrupts[0]; 74 len = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 75 break; 76 default: 77 return (AE_OK); 78 } 79 if (irqnum != 1) 80 return (AE_OK); 81 req = (struct lookup_irq_request *)context; 82 if (req->counter != req->rid) { 83 req->counter++; 84 return (AE_OK); 85 } 86 req->found = 1; 87 KASSERT(irq == rman_get_start(req->res), 88 ("IRQ resources do not match")); 89 bcopy(res, req->acpi_res, len); 90 return (AE_CTRL_TERMINATE); 91 } 92 93 ACPI_STATUS 94 acpi_lookup_irq_resource(device_t dev, int rid, struct resource *res, 95 ACPI_RESOURCE *acpi_res) 96 { 97 struct lookup_irq_request req; 98 ACPI_STATUS status; 99 100 req.acpi_res = acpi_res; 101 req.res = res; 102 req.counter = 0; 103 req.rid = rid; 104 req.found = 0; 105 status = AcpiWalkResources(acpi_get_handle(dev), "_CRS", 106 acpi_lookup_irq_handler, &req); 107 if (ACPI_SUCCESS(status) && req.found == 0) 108 status = AE_NOT_FOUND; 109 return (status); 110 } 111 112 void 113 acpi_config_intr(device_t dev, ACPI_RESOURCE *res) 114 { 115 u_int irq; 116 int pol, trig; 117 enum intr_trigger trigger; 118 enum intr_polarity polarity; 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(__x86_64__) 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 149 150 if (trig == ACPI_EDGE_SENSITIVE) 151 trigger = INTR_TRIGGER_EDGE; 152 else 153 trigger = INTR_TRIGGER_LEVEL; 154 155 if (pol == ACPI_ACTIVE_HIGH) 156 polarity = INTR_POLARITY_HIGH; 157 else 158 polarity = INTR_POLARITY_LOW; 159 160 if (machintr_legacy_intr_find(irq, trigger, polarity) < 0) 161 kprintf("%s: Skip irq %d config\n", __func__, irq); 162 else 163 BUS_CONFIG_INTR(dev, dev, irq, trigger, polarity); 164 } 165 166 struct acpi_resource_context { 167 struct acpi_parse_resource_set *set; 168 device_t dev; 169 void *context; 170 }; 171 172 #ifdef ACPI_DEBUG_OUTPUT 173 static const char * 174 acpi_address_range_name(UINT8 ResourceType) 175 { 176 static char buf[16]; 177 178 switch (ResourceType) { 179 case ACPI_MEMORY_RANGE: 180 return ("Memory"); 181 case ACPI_IO_RANGE: 182 return ("IO"); 183 case ACPI_BUS_NUMBER_RANGE: 184 return ("Bus Number"); 185 default: 186 ksnprintf(buf, sizeof(buf), "type %u", ResourceType); 187 return (buf); 188 } 189 } 190 #endif 191 192 static ACPI_STATUS 193 acpi_parse_resource(ACPI_RESOURCE *res, void *context) 194 { 195 struct acpi_parse_resource_set *set; 196 struct acpi_resource_context *arc; 197 UINT64 min, max, length, gran; 198 #ifdef ACPI_DEBUG 199 const char *name; 200 #endif 201 device_t dev; 202 203 arc = context; 204 dev = arc->dev; 205 set = arc->set; 206 207 switch (res->Type) { 208 case ACPI_RESOURCE_TYPE_END_TAG: 209 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n")); 210 break; 211 case ACPI_RESOURCE_TYPE_FIXED_IO: 212 if (res->Data.FixedIo.AddressLength <= 0) 213 break; 214 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedIo 0x%x/%d\n", 215 res->Data.FixedIo.Address, res->Data.FixedIo.AddressLength)); 216 set->set_ioport(dev, arc->context, res->Data.FixedIo.Address, 217 res->Data.FixedIo.AddressLength); 218 break; 219 case ACPI_RESOURCE_TYPE_IO: 220 if (res->Data.Io.AddressLength <= 0) 221 break; 222 if (res->Data.Io.Minimum == res->Data.Io.Maximum) { 223 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x/%d\n", 224 res->Data.Io.Minimum, res->Data.Io.AddressLength)); 225 set->set_ioport(dev, arc->context, res->Data.Io.Minimum, 226 res->Data.Io.AddressLength); 227 } else { 228 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x-0x%x/%d\n", 229 res->Data.Io.Minimum, res->Data.Io.Maximum, 230 res->Data.Io.AddressLength)); 231 set->set_iorange(dev, arc->context, res->Data.Io.Minimum, 232 res->Data.Io.Maximum, res->Data.Io.AddressLength, 233 res->Data.Io.Alignment); 234 } 235 break; 236 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: 237 if (res->Data.FixedMemory32.AddressLength <= 0) 238 break; 239 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedMemory32 0x%x/%d\n", 240 res->Data.FixedMemory32.Address, 241 res->Data.FixedMemory32.AddressLength)); 242 set->set_memory(dev, arc->context, res->Data.FixedMemory32.Address, 243 res->Data.FixedMemory32.AddressLength); 244 break; 245 case ACPI_RESOURCE_TYPE_MEMORY32: 246 if (res->Data.Memory32.AddressLength <= 0) 247 break; 248 if (res->Data.Memory32.Minimum == res->Data.Memory32.Maximum) { 249 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x/%d\n", 250 res->Data.Memory32.Minimum, res->Data.Memory32.AddressLength)); 251 set->set_memory(dev, arc->context, res->Data.Memory32.Minimum, 252 res->Data.Memory32.AddressLength); 253 } else { 254 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x-0x%x/%d\n", 255 res->Data.Memory32.Minimum, res->Data.Memory32.Maximum, 256 res->Data.Memory32.AddressLength)); 257 set->set_memoryrange(dev, arc->context, res->Data.Memory32.Minimum, 258 res->Data.Memory32.Maximum, res->Data.Memory32.AddressLength, 259 res->Data.Memory32.Alignment); 260 } 261 break; 262 case ACPI_RESOURCE_TYPE_MEMORY24: 263 if (res->Data.Memory24.AddressLength <= 0) 264 break; 265 if (res->Data.Memory24.Minimum == res->Data.Memory24.Maximum) { 266 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x/%d\n", 267 res->Data.Memory24.Minimum, res->Data.Memory24.AddressLength)); 268 set->set_memory(dev, arc->context, res->Data.Memory24.Minimum, 269 res->Data.Memory24.AddressLength); 270 } else { 271 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x-0x%x/%d\n", 272 res->Data.Memory24.Minimum, res->Data.Memory24.Maximum, 273 res->Data.Memory24.AddressLength)); 274 set->set_memoryrange(dev, arc->context, res->Data.Memory24.Minimum, 275 res->Data.Memory24.Maximum, res->Data.Memory24.AddressLength, 276 res->Data.Memory24.Alignment); 277 } 278 break; 279 case ACPI_RESOURCE_TYPE_IRQ: 280 /* 281 * from 1.0b 6.4.2 282 * "This structure is repeated for each separate interrupt 283 * required" 284 */ 285 set->set_irq(dev, arc->context, res->Data.Irq.Interrupts, 286 res->Data.Irq.InterruptCount, res->Data.Irq.Triggering, 287 res->Data.Irq.Polarity); 288 break; 289 case ACPI_RESOURCE_TYPE_DMA: 290 /* 291 * from 1.0b 6.4.3 292 * "This structure is repeated for each separate DMA channel 293 * required" 294 */ 295 set->set_drq(dev, arc->context, res->Data.Dma.Channels, 296 res->Data.Dma.ChannelCount); 297 break; 298 case ACPI_RESOURCE_TYPE_START_DEPENDENT: 299 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "start dependent functions\n")); 300 set->set_start_dependent(dev, arc->context, 301 res->Data.StartDpf.CompatibilityPriority); 302 break; 303 case ACPI_RESOURCE_TYPE_END_DEPENDENT: 304 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "end dependent functions\n")); 305 set->set_end_dependent(dev, arc->context); 306 break; 307 case ACPI_RESOURCE_TYPE_ADDRESS16: 308 case ACPI_RESOURCE_TYPE_ADDRESS32: 309 case ACPI_RESOURCE_TYPE_ADDRESS64: 310 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: 311 switch (res->Type) { 312 case ACPI_RESOURCE_TYPE_ADDRESS16: 313 gran = res->Data.Address16.Address.Granularity; 314 min = res->Data.Address16.Address.Minimum; 315 max = res->Data.Address16.Address.Maximum; 316 length = res->Data.Address16.Address.AddressLength; 317 #ifdef ACPI_DEBUG 318 name = "Address16"; 319 #endif 320 break; 321 case ACPI_RESOURCE_TYPE_ADDRESS32: 322 gran = res->Data.Address32.Address.Granularity; 323 min = res->Data.Address32.Address.Minimum; 324 max = res->Data.Address32.Address.Maximum; 325 length = res->Data.Address32.Address.AddressLength; 326 #ifdef ACPI_DEBUG 327 name = "Address32"; 328 #endif 329 break; 330 case ACPI_RESOURCE_TYPE_ADDRESS64: 331 gran = res->Data.Address64.Address.Granularity; 332 min = res->Data.Address64.Address.Minimum; 333 max = res->Data.Address64.Address.Maximum; 334 length = res->Data.Address64.Address.AddressLength; 335 #ifdef ACPI_DEBUG 336 name = "Address64"; 337 #endif 338 break; 339 default: 340 KASSERT(res->Type == ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64, 341 ("should never happen")); 342 gran = res->Data.ExtAddress64.Address.Granularity; 343 min = res->Data.ExtAddress64.Address.Minimum; 344 max = res->Data.ExtAddress64.Address.Maximum; 345 length = res->Data.ExtAddress64.Address.AddressLength; 346 #ifdef ACPI_DEBUG 347 name = "ExtAddress64"; 348 #endif 349 break; 350 } 351 if (length <= 0) 352 break; 353 if (res->Data.Address.ProducerConsumer != ACPI_CONSUMER) { 354 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 355 "ignored %s %s producer\n", name, 356 acpi_address_range_name(res->Data.Address.ResourceType))); 357 break; 358 } 359 if (res->Data.Address.ResourceType != ACPI_MEMORY_RANGE && 360 res->Data.Address.ResourceType != ACPI_IO_RANGE) { 361 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 362 "ignored %s for non-memory, non-I/O\n", name)); 363 break; 364 } 365 if (res->Data.Address.MinAddressFixed == ACPI_ADDRESS_FIXED && 366 res->Data.Address.MaxAddressFixed == ACPI_ADDRESS_FIXED) { 367 if (res->Data.Address.ResourceType == ACPI_MEMORY_RANGE) { 368 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/Memory 0x%jx/%ju\n", 369 name, (uintmax_t)min, (uintmax_t)length)); 370 set->set_memory(dev, arc->context, min, length); 371 } else { 372 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/IO 0x%jx/%ju\n", name, 373 (uintmax_t)min, (uintmax_t)length)); 374 set->set_ioport(dev, arc->context, min, length); 375 } 376 } else { 377 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) { 378 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 379 "%s/Memory 0x%jx-0x%jx/%ju\n", name, (uintmax_t)min, 380 (uintmax_t)max, (uintmax_t)length)); 381 set->set_memoryrange(dev, arc->context, min, max, length, gran); 382 } else { 383 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s/IO 0x%jx-0x%jx/%ju\n", 384 name, (uintmax_t)min, (uintmax_t)max, (uintmax_t)length)); 385 set->set_iorange(dev, arc->context, min, max, length, gran); 386 } 387 } 388 break; 389 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 390 if (res->Data.ExtendedIrq.ProducerConsumer != ACPI_CONSUMER) { 391 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "ignored ExtIRQ producer\n")); 392 break; 393 } 394 set->set_ext_irq(dev, arc->context, res->Data.ExtendedIrq.Interrupts, 395 res->Data.ExtendedIrq.InterruptCount, 396 res->Data.ExtendedIrq.Triggering, res->Data.ExtendedIrq.Polarity); 397 break; 398 case ACPI_RESOURCE_TYPE_VENDOR: 399 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 400 "unimplemented VendorSpecific resource\n")); 401 break; 402 default: 403 break; 404 } 405 return (AE_OK); 406 } 407 408 /* 409 * Fetch a device's resources and associate them with the device. 410 * 411 * Note that it might be nice to also locate ACPI-specific resource items, such 412 * as GPE bits. 413 * 414 * We really need to split the resource-fetching code out from the 415 * resource-parsing code, since we may want to use the parsing 416 * code for _PRS someday. 417 */ 418 ACPI_STATUS 419 acpi_parse_resources(device_t dev, ACPI_HANDLE handle, 420 struct acpi_parse_resource_set *set, void *arg) 421 { 422 struct acpi_resource_context arc; 423 ACPI_STATUS status; 424 425 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 426 427 set->set_init(dev, arg, &arc.context); 428 arc.set = set; 429 arc.dev = dev; 430 status = AcpiWalkResources(handle, "_CRS", acpi_parse_resource, &arc); 431 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { 432 kprintf("can't fetch resources for %s - %s\n", 433 acpi_name(handle), AcpiFormatException(status)); 434 return_ACPI_STATUS (status); 435 } 436 set->set_done(dev, arc.context); 437 return_ACPI_STATUS (AE_OK); 438 } 439 440 /* 441 * Resource-set vectors used to attach _CRS-derived resources 442 * to an ACPI device. 443 */ 444 static void acpi_res_set_init(device_t dev, void *arg, void **context); 445 static void acpi_res_set_done(device_t dev, void *context); 446 static void acpi_res_set_ioport(device_t dev, void *context, 447 uint64_t base, uint64_t length); 448 static void acpi_res_set_iorange(device_t dev, void *context, 449 uint64_t low, uint64_t high, 450 uint64_t length, uint64_t align); 451 static void acpi_res_set_memory(device_t dev, void *context, 452 uint64_t base, uint64_t length); 453 static void acpi_res_set_memoryrange(device_t dev, void *context, 454 uint64_t low, uint64_t high, 455 uint64_t length, uint64_t align); 456 static void acpi_res_set_irq(device_t dev, void *context, uint8_t *irq, 457 int count, int trig, int pol); 458 static void acpi_res_set_ext_irq(device_t dev, void *context, 459 uint32_t *irq, int count, int trig, int pol); 460 static void acpi_res_set_drq(device_t dev, void *context, uint8_t *drq, 461 int count); 462 static void acpi_res_set_start_dependent(device_t dev, void *context, 463 int preference); 464 static void acpi_res_set_end_dependent(device_t dev, void *context); 465 466 struct acpi_parse_resource_set acpi_res_parse_set = { 467 acpi_res_set_init, 468 acpi_res_set_done, 469 acpi_res_set_ioport, 470 acpi_res_set_iorange, 471 acpi_res_set_memory, 472 acpi_res_set_memoryrange, 473 acpi_res_set_irq, 474 acpi_res_set_ext_irq, 475 acpi_res_set_drq, 476 acpi_res_set_start_dependent, 477 acpi_res_set_end_dependent 478 }; 479 480 struct acpi_res_context { 481 int ar_nio; 482 int ar_nmem; 483 int ar_nirq; 484 int ar_ndrq; 485 void *ar_parent; 486 }; 487 488 static void 489 acpi_res_set_init(device_t dev, void *arg, void **context) 490 { 491 struct acpi_res_context *cp; 492 493 if ((cp = AcpiOsAllocate(sizeof(*cp))) != NULL) { 494 bzero(cp, sizeof(*cp)); 495 cp->ar_parent = arg; 496 *context = cp; 497 } 498 } 499 500 static void 501 acpi_res_set_done(device_t dev, void *context) 502 { 503 struct acpi_res_context *cp = (struct acpi_res_context *)context; 504 505 if (cp == NULL) 506 return; 507 AcpiOsFree(cp); 508 } 509 510 static void 511 acpi_res_set_ioport(device_t dev, void *context, uint64_t base, 512 uint64_t length) 513 { 514 struct acpi_res_context *cp = (struct acpi_res_context *)context; 515 516 if (cp == NULL) 517 return; 518 bus_set_resource(dev, SYS_RES_IOPORT, cp->ar_nio++, base, length, -1); 519 } 520 521 static void 522 acpi_res_set_iorange(device_t dev, void *context, uint64_t low, 523 uint64_t high, uint64_t length, uint64_t align) 524 { 525 struct acpi_res_context *cp = (struct acpi_res_context *)context; 526 uint64_t base; 527 528 if (cp == NULL) 529 return; 530 531 base = roundup(low, align); 532 if (base + length - 1 <= high) { 533 acpi_res_set_ioport(dev, context, base, length); 534 return; 535 } 536 device_printf(dev, "I/O range [0x%jx,0x%jx,0x%jx,0x%jx] not supported\n", 537 (uintmax_t)low, (uintmax_t)high, (uintmax_t)length, (uintmax_t)align); 538 } 539 540 static void 541 acpi_res_set_memory(device_t dev, void *context, uint64_t base, 542 uint64_t length) 543 { 544 struct acpi_res_context *cp = (struct acpi_res_context *)context; 545 546 if (cp == NULL) 547 return; 548 549 bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length, -1); 550 } 551 552 static void 553 acpi_res_set_memoryrange(device_t dev, void *context, uint64_t low, 554 uint64_t high, uint64_t length, uint64_t align) 555 { 556 struct acpi_res_context *cp = (struct acpi_res_context *)context; 557 558 if (cp == NULL) 559 return; 560 device_printf(dev, "memory range [0x%jx,0x%jx,0x%jx,0x%jx] " 561 "not supported\n", 562 (uintmax_t)low, (uintmax_t)high, (uintmax_t)length, (uintmax_t)align); 563 } 564 565 static void 566 acpi_res_set_irq(device_t dev, void *context, uint8_t *irq, int count, 567 int trig, int pol) 568 { 569 struct acpi_res_context *cp = (struct acpi_res_context *)context; 570 571 if (cp == NULL || irq == NULL) 572 return; 573 574 /* This implements no resource relocation. */ 575 if (count != 1) 576 return; 577 578 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1, 579 machintr_legacy_intr_cpuid(*irq)); 580 } 581 582 static void 583 acpi_res_set_ext_irq(device_t dev, void *context, uint32_t *irq, int count, 584 int trig, int pol) 585 { 586 struct acpi_res_context *cp = (struct acpi_res_context *)context; 587 588 if (cp == NULL || irq == NULL) 589 return; 590 591 /* This implements no resource relocation. */ 592 if (count != 1) 593 return; 594 595 /* There is no such IRQ at all */ 596 if (machintr_legacy_intr_find(*irq, 597 INTR_TRIGGER_CONFORM, INTR_POLARITY_CONFORM) < 0) 598 return; 599 600 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1, 601 machintr_legacy_intr_cpuid(*irq)); 602 } 603 604 static void 605 acpi_res_set_drq(device_t dev, void *context, uint8_t *drq, int count) 606 { 607 struct acpi_res_context *cp = (struct acpi_res_context *)context; 608 609 if (cp == NULL || drq == NULL) 610 return; 611 612 /* This implements no resource relocation. */ 613 if (count != 1) 614 return; 615 616 bus_set_resource(dev, SYS_RES_DRQ, cp->ar_ndrq++, *drq, 1, -1); 617 } 618 619 static void 620 acpi_res_set_start_dependent(device_t dev, void *context, int preference) 621 { 622 struct acpi_res_context *cp = (struct acpi_res_context *)context; 623 624 if (cp == NULL) 625 return; 626 device_printf(dev, "dependent functions not supported\n"); 627 } 628 629 static void 630 acpi_res_set_end_dependent(device_t dev, void *context) 631 { 632 struct acpi_res_context *cp = (struct acpi_res_context *)context; 633 634 if (cp == NULL) 635 return; 636 device_printf(dev, "dependent functions not supported\n"); 637 } 638 639 /* 640 * Resource-owning placeholders for IO and memory pseudo-devices. 641 * 642 * This code allocates system resources that will be used by ACPI 643 * child devices. The acpi parent manages these resources through a 644 * private rman. 645 */ 646 647 static int acpi_sysres_rid = 100; 648 649 static int acpi_sysres_probe(device_t dev); 650 static int acpi_sysres_attach(device_t dev); 651 652 static device_method_t acpi_sysres_methods[] = { 653 /* Device interface */ 654 DEVMETHOD(device_probe, acpi_sysres_probe), 655 DEVMETHOD(device_attach, acpi_sysres_attach), 656 657 DEVMETHOD_END 658 }; 659 660 static driver_t acpi_sysres_driver = { 661 "acpi_sysresource", 662 acpi_sysres_methods, 663 0, 664 }; 665 666 static devclass_t acpi_sysres_devclass; 667 DRIVER_MODULE(acpi_sysresource, acpi, acpi_sysres_driver, acpi_sysres_devclass, 668 NULL, NULL); 669 MODULE_DEPEND(acpi_sysresource, acpi, 1, 1, 1); 670 671 static int 672 acpi_sysres_probe(device_t dev) 673 { 674 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 675 676 if (acpi_disabled("sysresource") || 677 ACPI_ID_PROBE(device_get_parent(dev), dev, sysres_ids) == NULL) 678 return (ENXIO); 679 680 device_set_desc(dev, "System Resource"); 681 if (bootverbose == 0) 682 device_quiet(dev); 683 return (BUS_PROBE_DEFAULT); 684 } 685 686 static int 687 acpi_sysres_attach(device_t dev) 688 { 689 device_t bus; 690 struct resource_list_entry *bus_rle, *dev_rle; 691 struct resource_list *bus_rl, *dev_rl; 692 int done, type; 693 u_long start, end, count; 694 695 /* 696 * Loop through all current resources to see if the new one overlaps 697 * any existing ones. If so, grow the old one up and/or down 698 * accordingly. Discard any that are wholly contained in the old. If 699 * the resource is unique, add it to the parent. It will later go into 700 * the rman pool. 701 */ 702 bus = device_get_parent(dev); 703 dev_rl = BUS_GET_RESOURCE_LIST(bus, dev); 704 bus_rl = BUS_GET_RESOURCE_LIST(device_get_parent(bus), bus); 705 if (bus_rl) 706 kprintf("busrl is not null!\n"); 707 SLIST_FOREACH(dev_rle, dev_rl, link) { 708 if (dev_rle->type != SYS_RES_IOPORT && dev_rle->type != SYS_RES_MEMORY) 709 continue; 710 711 start = dev_rle->start; 712 end = dev_rle->end; 713 count = dev_rle->count; 714 type = dev_rle->type; 715 done = FALSE; 716 if (bus_rl) { 717 SLIST_FOREACH(bus_rle, bus_rl, link) { 718 if (bus_rle->type != type) 719 continue; 720 721 /* New resource wholly contained in old, discard. */ 722 if (start >= bus_rle->start && end <= bus_rle->end) 723 break; 724 725 /* New tail overlaps old head, grow existing resource downward. */ 726 if (start < bus_rle->start && end >= bus_rle->start) { 727 bus_rle->count += bus_rle->start - start; 728 bus_rle->start = start; 729 done = TRUE; 730 } 731 732 /* New head overlaps old tail, grow existing resource upward. */ 733 if (start <= bus_rle->end && end > bus_rle->end) { 734 bus_rle->count += end - bus_rle->end; 735 bus_rle->end = end; 736 done = TRUE; 737 } 738 739 /* If we adjusted the old resource, we're finished. */ 740 if (done) 741 break; 742 } 743 } else { 744 bus_rle = NULL; 745 } 746 /* If we didn't merge with anything, add this resource. */ 747 if (bus_rle == NULL) 748 bus_set_resource(bus, type, acpi_sysres_rid++, start, count, -1); 749 } 750 751 /* After merging/moving resources to the parent, free the list. */ 752 resource_list_free(dev_rl); 753 754 return (0); 755 } 756