Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/dev/acpica/acpi_resource.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
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/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 <contrib/dev/acpica/acpi.h> 43 #include <dev/acpica/acpivar.h> 44 45 /* Hooks for the ACPI CA 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, irq; 63 64 switch (res->Type) { 65 case ACPI_RESOURCE_TYPE_IRQ: 66 irqnum = res->Data.Irq.InterruptCount; 67 irq = res->Data.Irq.Interrupts[0]; 68 len = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 69 break; 70 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 71 irqnum = res->Data.ExtendedIrq.InterruptCount; 72 irq = res->Data.ExtendedIrq.Interrupts[0]; 73 len = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 74 break; 75 default: 76 return (AE_OK); 77 } 78 if (irqnum != 1) 79 return (AE_OK); 80 req = (struct lookup_irq_request *)context; 81 if (req->counter != req->rid) { 82 req->counter++; 83 return (AE_OK); 84 } 85 req->found = 1; 86 KASSERT(irq == rman_get_start(req->res), 87 ("IRQ resources do not match")); 88 bcopy(res, req->acpi_res, len); 89 return (AE_CTRL_TERMINATE); 90 } 91 92 ACPI_STATUS 93 acpi_lookup_irq_resource(device_t dev, int rid, struct resource *res, 94 ACPI_RESOURCE *acpi_res) 95 { 96 struct lookup_irq_request req; 97 ACPI_STATUS status; 98 99 req.acpi_res = acpi_res; 100 req.res = res; 101 req.counter = 0; 102 req.rid = rid; 103 req.found = 0; 104 status = AcpiWalkResources(acpi_get_handle(dev), "_CRS", 105 acpi_lookup_irq_handler, &req); 106 if (ACPI_SUCCESS(status) && req.found == 0) 107 status = AE_NOT_FOUND; 108 return (status); 109 } 110 111 void 112 acpi_config_intr(device_t dev, ACPI_RESOURCE *res) 113 { 114 u_int irq; 115 int pol, trig; 116 117 switch (res->Type) { 118 case ACPI_RESOURCE_TYPE_IRQ: 119 KASSERT(res->Data.Irq.InterruptCount == 1, 120 ("%s: multiple interrupts", __func__)); 121 irq = res->Data.Irq.Interrupts[0]; 122 trig = res->Data.Irq.Triggering; 123 pol = res->Data.Irq.Polarity; 124 break; 125 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 126 KASSERT(res->Data.ExtendedIrq.InterruptCount == 1, 127 ("%s: multiple interrupts", __func__)); 128 irq = res->Data.ExtendedIrq.Interrupts[0]; 129 trig = res->Data.ExtendedIrq.Triggering; 130 pol = res->Data.ExtendedIrq.Polarity; 131 break; 132 default: 133 panic("%s: bad resource type %u", __func__, res->Type); 134 } 135 BUS_CONFIG_INTR(dev, irq, (trig == ACPI_EDGE_SENSITIVE) ? 136 INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL, (pol == ACPI_ACTIVE_HIGH) ? 137 INTR_POLARITY_HIGH : INTR_POLARITY_LOW); 138 } 139 140 /* 141 * Fetch a device's resources and associate them with the device. 142 * 143 * Note that it might be nice to also locate ACPI-specific resource items, such 144 * as GPE bits. 145 * 146 * We really need to split the resource-fetching code out from the 147 * resource-parsing code, since we may want to use the parsing 148 * code for _PRS someday. 149 */ 150 ACPI_STATUS 151 acpi_parse_resources(device_t dev, ACPI_HANDLE handle, 152 struct acpi_parse_resource_set *set, void *arg) 153 { 154 ACPI_BUFFER buf; 155 ACPI_RESOURCE *res; 156 char *curr, *last; 157 ACPI_STATUS status; 158 void *context; 159 160 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 161 162 /* 163 * Special-case some devices that abuse _PRS/_CRS to mean 164 * something other than "I consume this resource". 165 * 166 * XXX do we really need this? It's only relevant once 167 * we start always-allocating these resources, and even 168 * then, the only special-cased device is likely to be 169 * the PCI interrupt link. 170 */ 171 172 /* Fetch the device's current resources. */ 173 buf.Length = ACPI_ALLOCATE_BUFFER; 174 if (ACPI_FAILURE((status = AcpiGetCurrentResources(handle, &buf)))) { 175 if (status != AE_NOT_FOUND && status != AE_TYPE) 176 printf("can't fetch resources for %s - %s\n", 177 acpi_name(handle), AcpiFormatException(status)); 178 return_ACPI_STATUS (status); 179 } 180 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "%s - got %ld bytes of resources\n", 181 acpi_name(handle), (long)buf.Length)); 182 set->set_init(dev, arg, &context); 183 184 /* Iterate through the resources */ 185 curr = buf.Pointer; 186 last = (char *)buf.Pointer + buf.Length; 187 while (curr < last) { 188 res = (ACPI_RESOURCE *)curr; 189 curr += res->Length; 190 191 /* Handle the individual resource types */ 192 switch(res->Type) { 193 case ACPI_RESOURCE_TYPE_END_TAG: 194 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "EndTag\n")); 195 curr = last; 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, 202 res->Data.FixedIo.AddressLength)); 203 set->set_ioport(dev, context, 204 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, 213 res->Data.Io.AddressLength)); 214 set->set_ioport(dev, context, 215 res->Data.Io.Minimum, 216 res->Data.Io.AddressLength); 217 } else { 218 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Io 0x%x-0x%x/%d\n", 219 res->Data.Io.Minimum, 220 res->Data.Io.Maximum, 221 res->Data.Io.AddressLength)); 222 set->set_iorange(dev, context, 223 res->Data.Io.Minimum, 224 res->Data.Io.Maximum, 225 res->Data.Io.AddressLength, 226 res->Data.Io.Alignment); 227 } 228 break; 229 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: 230 if (res->Data.FixedMemory32.AddressLength <= 0) 231 break; 232 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "FixedMemory32 0x%x/%d\n", 233 res->Data.FixedMemory32.Address, 234 res->Data.FixedMemory32.AddressLength)); 235 set->set_memory(dev, context, 236 res->Data.FixedMemory32.Address, 237 res->Data.FixedMemory32.AddressLength); 238 break; 239 case ACPI_RESOURCE_TYPE_MEMORY32: 240 if (res->Data.Memory32.AddressLength <= 0) 241 break; 242 if (res->Data.Memory32.Minimum == 243 res->Data.Memory32.Maximum) { 244 245 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x/%d\n", 246 res->Data.Memory32.Minimum, 247 res->Data.Memory32.AddressLength)); 248 set->set_memory(dev, context, 249 res->Data.Memory32.Minimum, 250 res->Data.Memory32.AddressLength); 251 } else { 252 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory32 0x%x-0x%x/%d\n", 253 res->Data.Memory32.Minimum, 254 res->Data.Memory32.Maximum, 255 res->Data.Memory32.AddressLength)); 256 set->set_memoryrange(dev, context, 257 res->Data.Memory32.Minimum, 258 res->Data.Memory32.Maximum, 259 res->Data.Memory32.AddressLength, 260 res->Data.Memory32.Alignment); 261 } 262 break; 263 case ACPI_RESOURCE_TYPE_MEMORY24: 264 if (res->Data.Memory24.AddressLength <= 0) 265 break; 266 if (res->Data.Memory24.Minimum == 267 res->Data.Memory24.Maximum) { 268 269 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x/%d\n", 270 res->Data.Memory24.Minimum, 271 res->Data.Memory24.AddressLength)); 272 set->set_memory(dev, context, res->Data.Memory24.Minimum, 273 res->Data.Memory24.AddressLength); 274 } else { 275 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "Memory24 0x%x-0x%x/%d\n", 276 res->Data.Memory24.Minimum, 277 res->Data.Memory24.Maximum, 278 res->Data.Memory24.AddressLength)); 279 set->set_memoryrange(dev, context, 280 res->Data.Memory24.Minimum, 281 res->Data.Memory24.Maximum, 282 res->Data.Memory24.AddressLength, 283 res->Data.Memory24.Alignment); 284 } 285 break; 286 case ACPI_RESOURCE_TYPE_IRQ: 287 /* 288 * from 1.0b 6.4.2 289 * "This structure is repeated for each separate interrupt 290 * required" 291 */ 292 set->set_irq(dev, context, res->Data.Irq.Interrupts, 293 res->Data.Irq.InterruptCount, res->Data.Irq.Triggering, 294 res->Data.Irq.Polarity); 295 break; 296 case ACPI_RESOURCE_TYPE_DMA: 297 /* 298 * from 1.0b 6.4.3 299 * "This structure is repeated for each separate dma channel 300 * required" 301 */ 302 set->set_drq(dev, context, res->Data.Dma.Channels, 303 res->Data.Dma.ChannelCount); 304 break; 305 case ACPI_RESOURCE_TYPE_START_DEPENDENT: 306 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "start dependent functions\n")); 307 set->set_start_dependent(dev, context, 308 res->Data.StartDpf.CompatibilityPriority); 309 break; 310 case ACPI_RESOURCE_TYPE_END_DEPENDENT: 311 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, "end dependent functions\n")); 312 set->set_end_dependent(dev, context); 313 break; 314 case ACPI_RESOURCE_TYPE_ADDRESS32: 315 if (res->Data.Address32.AddressLength <= 0) 316 break; 317 if (res->Data.Address32.ProducerConsumer != ACPI_CONSUMER) { 318 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 319 "ignored Address32 %s producer\n", 320 res->Data.Address32.ResourceType == ACPI_IO_RANGE ? 321 "IO" : "Memory")); 322 break; 323 } 324 if (res->Data.Address32.ResourceType != ACPI_MEMORY_RANGE && 325 res->Data.Address32.ResourceType != ACPI_IO_RANGE) { 326 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 327 "ignored Address32 for non-memory, non-I/O\n")); 328 break; 329 } 330 331 if (res->Data.Address32.MinAddressFixed == ACPI_ADDRESS_FIXED && 332 res->Data.Address32.MaxAddressFixed == ACPI_ADDRESS_FIXED) { 333 334 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) { 335 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 336 "Address32/Memory 0x%x/%d\n", 337 res->Data.Address32.Minimum, 338 res->Data.Address32.AddressLength)); 339 set->set_memory(dev, context, 340 res->Data.Address32.Minimum, 341 res->Data.Address32.AddressLength); 342 } else { 343 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 344 "Address32/IO 0x%x/%d\n", 345 res->Data.Address32.Minimum, 346 res->Data.Address32.AddressLength)); 347 set->set_ioport(dev, context, 348 res->Data.Address32.Minimum, 349 res->Data.Address32.AddressLength); 350 } 351 } else { 352 if (res->Data.Address32.ResourceType == ACPI_MEMORY_RANGE) { 353 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 354 "Address32/Memory 0x%x-0x%x/%d\n", 355 res->Data.Address32.Minimum, 356 res->Data.Address32.Maximum, 357 res->Data.Address32.AddressLength)); 358 set->set_memoryrange(dev, context, 359 res->Data.Address32.Minimum, 360 res->Data.Address32.Maximum, 361 res->Data.Address32.AddressLength, 362 res->Data.Address32.Granularity); 363 } else { 364 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 365 "Address32/IO 0x%x-0x%x/%d\n", 366 res->Data.Address32.Minimum, 367 res->Data.Address32.Maximum, 368 res->Data.Address32.AddressLength)); 369 set->set_iorange(dev, context, 370 res->Data.Address32.Minimum, 371 res->Data.Address32.Maximum, 372 res->Data.Address32.AddressLength, 373 res->Data.Address32.Granularity); 374 } 375 } 376 break; 377 case ACPI_RESOURCE_TYPE_ADDRESS16: 378 if (res->Data.Address16.AddressLength <= 0) 379 break; 380 if (res->Data.Address16.ProducerConsumer != ACPI_CONSUMER) { 381 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 382 "ignored Address16 %s producer\n", 383 res->Data.Address16.ResourceType == ACPI_IO_RANGE ? 384 "IO" : "Memory")); 385 break; 386 } 387 if (res->Data.Address16.ResourceType != ACPI_MEMORY_RANGE && 388 res->Data.Address16.ResourceType != ACPI_IO_RANGE) { 389 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 390 "ignored Address16 for non-memory, non-I/O\n")); 391 break; 392 } 393 394 if (res->Data.Address16.MinAddressFixed == ACPI_ADDRESS_FIXED && 395 res->Data.Address16.MaxAddressFixed == ACPI_ADDRESS_FIXED) { 396 397 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) { 398 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 399 "Address16/Memory 0x%x/%d\n", 400 res->Data.Address16.Minimum, 401 res->Data.Address16.AddressLength)); 402 set->set_memory(dev, context, 403 res->Data.Address16.Minimum, 404 res->Data.Address16.AddressLength); 405 } else { 406 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 407 "Address16/IO 0x%x/%d\n", 408 res->Data.Address16.Minimum, 409 res->Data.Address16.AddressLength)); 410 set->set_ioport(dev, context, 411 res->Data.Address16.Minimum, 412 res->Data.Address16.AddressLength); 413 } 414 } else { 415 if (res->Data.Address16.ResourceType == ACPI_MEMORY_RANGE) { 416 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 417 "Address16/Memory 0x%x-0x%x/%d\n", 418 res->Data.Address16.Minimum, 419 res->Data.Address16.Maximum, 420 res->Data.Address16.AddressLength)); 421 set->set_memoryrange(dev, context, 422 res->Data.Address16.Minimum, 423 res->Data.Address16.Maximum, 424 res->Data.Address16.AddressLength, 425 res->Data.Address16.Granularity); 426 } else { 427 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 428 "Address16/IO 0x%x-0x%x/%d\n", 429 res->Data.Address16.Minimum, 430 res->Data.Address16.Maximum, 431 res->Data.Address16.AddressLength)); 432 set->set_iorange(dev, context, 433 res->Data.Address16.Minimum, 434 res->Data.Address16.Maximum, 435 res->Data.Address16.AddressLength, 436 res->Data.Address16.Granularity); 437 } 438 } 439 break; 440 case ACPI_RESOURCE_TYPE_ADDRESS64: 441 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 442 "unimplemented Address64 resource\n")); 443 break; 444 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 445 if (res->Data.ExtendedIrq.ProducerConsumer != ACPI_CONSUMER) { 446 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 447 "ignored ExtIRQ producer\n")); 448 break; 449 } 450 set->set_ext_irq(dev, context, res->Data.ExtendedIrq.Interrupts, 451 res->Data.ExtendedIrq.InterruptCount, 452 res->Data.ExtendedIrq.Triggering, 453 res->Data.ExtendedIrq.Polarity); 454 break; 455 case ACPI_RESOURCE_TYPE_VENDOR: 456 ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, 457 "unimplemented VendorSpecific resource\n")); 458 break; 459 default: 460 break; 461 } 462 } 463 464 AcpiOsFree(buf.Pointer); 465 set->set_done(dev, context); 466 return_ACPI_STATUS (AE_OK); 467 } 468 469 /* 470 * Resource-set vectors used to attach _CRS-derived resources 471 * to an ACPI device. 472 */ 473 static void acpi_res_set_init(device_t dev, void *arg, void **context); 474 static void acpi_res_set_done(device_t dev, void *context); 475 static void acpi_res_set_ioport(device_t dev, void *context, 476 u_int32_t base, u_int32_t length); 477 static void acpi_res_set_iorange(device_t dev, void *context, 478 u_int32_t low, u_int32_t high, 479 u_int32_t length, u_int32_t align); 480 static void acpi_res_set_memory(device_t dev, void *context, 481 u_int32_t base, u_int32_t length); 482 static void acpi_res_set_memoryrange(device_t dev, void *context, 483 u_int32_t low, u_int32_t high, 484 u_int32_t length, u_int32_t align); 485 static void acpi_res_set_irq(device_t dev, void *context, u_int8_t *irq, 486 int count, int trig, int pol); 487 static void acpi_res_set_ext_irq(device_t dev, void *context, 488 u_int32_t *irq, int count, int trig, int pol); 489 static void acpi_res_set_drq(device_t dev, void *context, u_int8_t *drq, 490 int count); 491 static void acpi_res_set_start_dependent(device_t dev, void *context, 492 int preference); 493 static void acpi_res_set_end_dependent(device_t dev, void *context); 494 495 struct acpi_parse_resource_set acpi_res_parse_set = { 496 acpi_res_set_init, 497 acpi_res_set_done, 498 acpi_res_set_ioport, 499 acpi_res_set_iorange, 500 acpi_res_set_memory, 501 acpi_res_set_memoryrange, 502 acpi_res_set_irq, 503 acpi_res_set_ext_irq, 504 acpi_res_set_drq, 505 acpi_res_set_start_dependent, 506 acpi_res_set_end_dependent 507 }; 508 509 struct acpi_res_context { 510 int ar_nio; 511 int ar_nmem; 512 int ar_nirq; 513 int ar_ndrq; 514 void *ar_parent; 515 }; 516 517 static void 518 acpi_res_set_init(device_t dev, void *arg, void **context) 519 { 520 struct acpi_res_context *cp; 521 522 if ((cp = AcpiOsAllocate(sizeof(*cp))) != NULL) { 523 bzero(cp, sizeof(*cp)); 524 cp->ar_parent = arg; 525 *context = cp; 526 } 527 } 528 529 static void 530 acpi_res_set_done(device_t dev, void *context) 531 { 532 struct acpi_res_context *cp = (struct acpi_res_context *)context; 533 534 if (cp == NULL) 535 return; 536 AcpiOsFree(cp); 537 } 538 539 static void 540 acpi_res_set_ioport(device_t dev, void *context, u_int32_t base, 541 u_int32_t length) 542 { 543 struct acpi_res_context *cp = (struct acpi_res_context *)context; 544 545 if (cp == NULL) 546 return; 547 bus_set_resource(dev, SYS_RES_IOPORT, cp->ar_nio++, base, length); 548 } 549 550 static void 551 acpi_res_set_iorange(device_t dev, void *context, u_int32_t low, 552 u_int32_t high, u_int32_t length, u_int32_t align) 553 { 554 struct acpi_res_context *cp = (struct acpi_res_context *)context; 555 556 if (cp == NULL) 557 return; 558 device_printf(dev, "I/O range not supported\n"); 559 } 560 561 static void 562 acpi_res_set_memory(device_t dev, void *context, u_int32_t base, 563 u_int32_t length) 564 { 565 struct acpi_res_context *cp = (struct acpi_res_context *)context; 566 567 if (cp == NULL) 568 return; 569 570 bus_set_resource(dev, SYS_RES_MEMORY, cp->ar_nmem++, base, length); 571 } 572 573 static void 574 acpi_res_set_memoryrange(device_t dev, void *context, u_int32_t low, 575 u_int32_t high, u_int32_t length, u_int32_t align) 576 { 577 struct acpi_res_context *cp = (struct acpi_res_context *)context; 578 579 if (cp == NULL) 580 return; 581 device_printf(dev, "memory range not supported\n"); 582 } 583 584 static void 585 acpi_res_set_irq(device_t dev, void *context, u_int8_t *irq, int count, 586 int trig, int pol) 587 { 588 struct acpi_res_context *cp = (struct acpi_res_context *)context; 589 590 if (cp == NULL || irq == NULL) 591 return; 592 593 /* This implements no resource relocation. */ 594 if (count != 1) 595 return; 596 597 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1); 598 } 599 600 static void 601 acpi_res_set_ext_irq(device_t dev, void *context, u_int32_t *irq, int count, 602 int trig, int pol) 603 { 604 struct acpi_res_context *cp = (struct acpi_res_context *)context; 605 606 if (cp == NULL || irq == NULL) 607 return; 608 609 /* This implements no resource relocation. */ 610 if (count != 1) 611 return; 612 613 bus_set_resource(dev, SYS_RES_IRQ, cp->ar_nirq++, *irq, 1); 614 } 615 616 static void 617 acpi_res_set_drq(device_t dev, void *context, u_int8_t *drq, int count) 618 { 619 struct acpi_res_context *cp = (struct acpi_res_context *)context; 620 621 if (cp == NULL || drq == NULL) 622 return; 623 624 /* This implements no resource relocation. */ 625 if (count != 1) 626 return; 627 628 bus_set_resource(dev, SYS_RES_DRQ, cp->ar_ndrq++, *drq, 1); 629 } 630 631 static void 632 acpi_res_set_start_dependent(device_t dev, void *context, int preference) 633 { 634 struct acpi_res_context *cp = (struct acpi_res_context *)context; 635 636 if (cp == NULL) 637 return; 638 device_printf(dev, "dependent functions not supported\n"); 639 } 640 641 static void 642 acpi_res_set_end_dependent(device_t dev, void *context) 643 { 644 struct acpi_res_context *cp = (struct acpi_res_context *)context; 645 646 if (cp == NULL) 647 return; 648 device_printf(dev, "dependent functions not supported\n"); 649 } 650 651 /* 652 * Resource-owning placeholders for IO and memory pseudo-devices. 653 * 654 * This code allocates system resources that will be used by ACPI 655 * child devices. The acpi parent manages these resources through a 656 * private rman. 657 */ 658 659 static int acpi_sysres_rid = 100; 660 661 static int acpi_sysres_probe(device_t dev); 662 static int acpi_sysres_attach(device_t dev); 663 664 static device_method_t acpi_sysres_methods[] = { 665 /* Device interface */ 666 DEVMETHOD(device_probe, acpi_sysres_probe), 667 DEVMETHOD(device_attach, acpi_sysres_attach), 668 669 {0, 0} 670 }; 671 672 static driver_t acpi_sysres_driver = { 673 "acpi_sysresource", 674 acpi_sysres_methods, 675 0, 676 }; 677 678 static devclass_t acpi_sysres_devclass; 679 DRIVER_MODULE(acpi_sysresource, acpi, acpi_sysres_driver, acpi_sysres_devclass, 680 0, 0); 681 MODULE_DEPEND(acpi_sysresource, acpi, 1, 1, 1); 682 683 static int 684 acpi_sysres_probe(device_t dev) 685 { 686 static char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL }; 687 688 if (acpi_disabled("sysresource") || 689 ACPI_ID_PROBE(device_get_parent(dev), dev, sysres_ids) == NULL) 690 return (ENXIO); 691 692 device_set_desc(dev, "System Resource"); 693 device_quiet(dev); 694 return (BUS_PROBE_DEFAULT); 695 } 696 697 static int 698 acpi_sysres_attach(device_t dev) 699 { 700 device_t bus; 701 struct resource_list_entry *bus_rle, *dev_rle; 702 struct resource_list *bus_rl, *dev_rl; 703 int done, type; 704 u_long start, end, count; 705 706 /* 707 * Loop through all current resources to see if the new one overlaps 708 * any existing ones. If so, grow the old one up and/or down 709 * accordingly. Discard any that are wholly contained in the old. If 710 * the resource is unique, add it to the parent. It will later go into 711 * the rman pool. 712 */ 713 bus = device_get_parent(dev); 714 dev_rl = BUS_GET_RESOURCE_LIST(bus, dev); 715 bus_rl = BUS_GET_RESOURCE_LIST(device_get_parent(bus), bus); 716 STAILQ_FOREACH(dev_rle, dev_rl, link) { 717 if (dev_rle->type != SYS_RES_IOPORT && dev_rle->type != SYS_RES_MEMORY) 718 continue; 719 720 start = dev_rle->start; 721 end = dev_rle->end; 722 count = dev_rle->count; 723 type = dev_rle->type; 724 done = FALSE; 725 726 STAILQ_FOREACH(bus_rle, bus_rl, link) { 727 if (bus_rle->type != type) 728 continue; 729 730 /* New resource wholly contained in old, discard. */ 731 if (start >= bus_rle->start && end <= bus_rle->end) 732 break; 733 734 /* New tail overlaps old head, grow existing resource downward. */ 735 if (start < bus_rle->start && end >= bus_rle->start) { 736 bus_rle->count += bus_rle->start - start; 737 bus_rle->start = start; 738 done = TRUE; 739 } 740 741 /* New head overlaps old tail, grow existing resource upward. */ 742 if (start <= bus_rle->end && end > bus_rle->end) { 743 bus_rle->count += end - bus_rle->end; 744 bus_rle->end = end; 745 done = TRUE; 746 } 747 748 /* If we adjusted the old resource, we're finished. */ 749 if (done) 750 break; 751 } 752 753 /* If we didn't merge with anything, add this resource. */ 754 if (bus_rle == NULL) 755 bus_set_resource(bus, type, acpi_sysres_rid++, start, count); 756 } 757 758 /* After merging/moving resources to the parent, free the list. */ 759 resource_list_free(dev_rl); 760 761 return (0); 762 }
Cache object: beb26c4f697425b338724d4336d6bb4f
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]