1/****************************************************************************** 2 * 3 * Module Name: evgpe - General Purpose Event handling and dispatch
|
4 * $Revision: 1.53 $
|
4 * $Revision: 1.68 $ |
5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 *
|
12 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
|
12 * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp. |
13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117#include <contrib/dev/acpica/acpi.h> 118#include <contrib/dev/acpica/acevents.h> 119#include <contrib/dev/acpica/acnamesp.h> 120 121#define _COMPONENT ACPI_EVENTS 122 ACPI_MODULE_NAME ("evgpe") 123 124/* Local prototypes */ 125 126static void ACPI_SYSTEM_XFACE 127AcpiEvAsynchExecuteGpeMethod ( 128 void *Context); 129 130 131/******************************************************************************* 132 * 133 * FUNCTION: AcpiEvSetGpeType 134 * 135 * PARAMETERS: GpeEventInfo - GPE to set 136 * Type - New type 137 * 138 * RETURN: Status 139 * 140 * DESCRIPTION: Sets the new type for the GPE (wake, run, or wake/run) 141 * 142 ******************************************************************************/ 143 144ACPI_STATUS 145AcpiEvSetGpeType ( 146 ACPI_GPE_EVENT_INFO *GpeEventInfo, 147 UINT8 Type) 148{ 149 ACPI_STATUS Status; 150 151
|
152 ACPI_FUNCTION_TRACE ("EvSetGpeType");
|
152 ACPI_FUNCTION_TRACE (EvSetGpeType); |
153 154 155 /* Validate type and update register enable masks */ 156 157 switch (Type) 158 { 159 case ACPI_GPE_TYPE_WAKE: 160 case ACPI_GPE_TYPE_RUNTIME: 161 case ACPI_GPE_TYPE_WAKE_RUN: 162 break; 163 164 default: 165 return_ACPI_STATUS (AE_BAD_PARAMETER); 166 } 167 168 /* Disable the GPE if currently enabled */ 169 170 Status = AcpiEvDisableGpe (GpeEventInfo); 171 172 /* Type was validated above */ 173 174 GpeEventInfo->Flags &= ~ACPI_GPE_TYPE_MASK; /* Clear type bits */ 175 GpeEventInfo->Flags |= Type; /* Insert type */ 176 return_ACPI_STATUS (Status); 177} 178 179 180/******************************************************************************* 181 * 182 * FUNCTION: AcpiEvUpdateGpeEnableMasks 183 * 184 * PARAMETERS: GpeEventInfo - GPE to update 185 * Type - What to do: ACPI_GPE_DISABLE or 186 * ACPI_GPE_ENABLE 187 * 188 * RETURN: Status 189 * 190 * DESCRIPTION: Updates GPE register enable masks based on the GPE type 191 * 192 ******************************************************************************/ 193 194ACPI_STATUS 195AcpiEvUpdateGpeEnableMasks ( 196 ACPI_GPE_EVENT_INFO *GpeEventInfo, 197 UINT8 Type) 198{ 199 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; 200 UINT8 RegisterBit; 201 202
|
203 ACPI_FUNCTION_TRACE ("EvUpdateGpeEnableMasks");
|
203 ACPI_FUNCTION_TRACE (EvUpdateGpeEnableMasks); |
204 205 206 GpeRegisterInfo = GpeEventInfo->RegisterInfo; 207 if (!GpeRegisterInfo) 208 { 209 return_ACPI_STATUS (AE_NOT_EXIST); 210 }
|
211 RegisterBit = GpeEventInfo->RegisterBit;
|
211 RegisterBit = (UINT8) 212 (1 << (GpeEventInfo->GpeNumber - GpeRegisterInfo->BaseGpeNumber)); |
213 214 /* 1) Disable case. Simply clear all enable bits */ 215 216 if (Type == ACPI_GPE_DISABLE) 217 { 218 ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForWake, RegisterBit); 219 ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForRun, RegisterBit); 220 return_ACPI_STATUS (AE_OK); 221 } 222 223 /* 2) Enable case. Set/Clear the appropriate enable bits */ 224 225 switch (GpeEventInfo->Flags & ACPI_GPE_TYPE_MASK) 226 { 227 case ACPI_GPE_TYPE_WAKE: 228 ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, RegisterBit); 229 ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForRun, RegisterBit); 230 break; 231 232 case ACPI_GPE_TYPE_RUNTIME: 233 ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForWake, RegisterBit); 234 ACPI_SET_BIT (GpeRegisterInfo->EnableForRun, RegisterBit); 235 break; 236 237 case ACPI_GPE_TYPE_WAKE_RUN: 238 ACPI_SET_BIT (GpeRegisterInfo->EnableForWake, RegisterBit); 239 ACPI_SET_BIT (GpeRegisterInfo->EnableForRun, RegisterBit); 240 break; 241 242 default: 243 return_ACPI_STATUS (AE_BAD_PARAMETER); 244 } 245 246 return_ACPI_STATUS (AE_OK); 247} 248 249 250/******************************************************************************* 251 * 252 * FUNCTION: AcpiEvEnableGpe 253 * 254 * PARAMETERS: GpeEventInfo - GPE to enable 255 * WriteToHardware - Enable now, or just mark data structs 256 * (WAKE GPEs should be deferred) 257 * 258 * RETURN: Status 259 * 260 * DESCRIPTION: Enable a GPE based on the GPE type 261 * 262 ******************************************************************************/ 263 264ACPI_STATUS 265AcpiEvEnableGpe ( 266 ACPI_GPE_EVENT_INFO *GpeEventInfo, 267 BOOLEAN WriteToHardware) 268{ 269 ACPI_STATUS Status; 270 271
|
271 ACPI_FUNCTION_TRACE ("EvEnableGpe");
|
272 ACPI_FUNCTION_TRACE (EvEnableGpe); |
273 274 275 /* Make sure HW enable masks are updated */ 276 277 Status = AcpiEvUpdateGpeEnableMasks (GpeEventInfo, ACPI_GPE_ENABLE); 278 if (ACPI_FAILURE (Status)) 279 { 280 return_ACPI_STATUS (Status); 281 } 282 283 /* Mark wake-enabled or HW enable, or both */ 284 285 switch (GpeEventInfo->Flags & ACPI_GPE_TYPE_MASK) 286 { 287 case ACPI_GPE_TYPE_WAKE: 288 289 ACPI_SET_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED); 290 break; 291 292 case ACPI_GPE_TYPE_WAKE_RUN: 293 294 ACPI_SET_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED); 295 296 /*lint -fallthrough */ 297 298 case ACPI_GPE_TYPE_RUNTIME: 299 300 ACPI_SET_BIT (GpeEventInfo->Flags, ACPI_GPE_RUN_ENABLED); 301 302 if (WriteToHardware) 303 { 304 /* Clear the GPE (of stale events), then enable it */ 305 306 Status = AcpiHwClearGpe (GpeEventInfo); 307 if (ACPI_FAILURE (Status)) 308 { 309 return_ACPI_STATUS (Status); 310 } 311 312 /* Enable the requested runtime GPE */ 313 314 Status = AcpiHwWriteGpeEnableReg (GpeEventInfo); 315 } 316 break; 317 318 default: 319 return_ACPI_STATUS (AE_BAD_PARAMETER); 320 } 321 322 return_ACPI_STATUS (AE_OK); 323} 324 325 326/******************************************************************************* 327 * 328 * FUNCTION: AcpiEvDisableGpe 329 * 330 * PARAMETERS: GpeEventInfo - GPE to disable 331 * 332 * RETURN: Status 333 * 334 * DESCRIPTION: Disable a GPE based on the GPE type 335 * 336 ******************************************************************************/ 337 338ACPI_STATUS 339AcpiEvDisableGpe ( 340 ACPI_GPE_EVENT_INFO *GpeEventInfo) 341{ 342 ACPI_STATUS Status; 343 344
|
344 ACPI_FUNCTION_TRACE ("EvDisableGpe");
|
345 ACPI_FUNCTION_TRACE (EvDisableGpe); |
346 347 348 if (!(GpeEventInfo->Flags & ACPI_GPE_ENABLE_MASK)) 349 { 350 return_ACPI_STATUS (AE_OK); 351 } 352 353 /* Make sure HW enable masks are updated */ 354 355 Status = AcpiEvUpdateGpeEnableMasks (GpeEventInfo, ACPI_GPE_DISABLE); 356 if (ACPI_FAILURE (Status)) 357 { 358 return_ACPI_STATUS (Status); 359 } 360 361 /* Mark wake-disabled or HW disable, or both */ 362 363 switch (GpeEventInfo->Flags & ACPI_GPE_TYPE_MASK) 364 { 365 case ACPI_GPE_TYPE_WAKE: 366 ACPI_CLEAR_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED); 367 break; 368 369 case ACPI_GPE_TYPE_WAKE_RUN: 370 ACPI_CLEAR_BIT (GpeEventInfo->Flags, ACPI_GPE_WAKE_ENABLED); 371 372 /*lint -fallthrough */ 373 374 case ACPI_GPE_TYPE_RUNTIME: 375 376 /* Disable the requested runtime GPE */ 377 378 ACPI_CLEAR_BIT (GpeEventInfo->Flags, ACPI_GPE_RUN_ENABLED); 379 Status = AcpiHwWriteGpeEnableReg (GpeEventInfo); 380 break; 381 382 default: 383 return_ACPI_STATUS (AE_BAD_PARAMETER); 384 } 385 386 return_ACPI_STATUS (AE_OK); 387} 388 389 390/******************************************************************************* 391 * 392 * FUNCTION: AcpiEvGetGpeEventInfo 393 * 394 * PARAMETERS: GpeDevice - Device node. NULL for GPE0/GPE1 395 * GpeNumber - Raw GPE number 396 * 397 * RETURN: A GPE EventInfo struct. NULL if not a valid GPE 398 * 399 * DESCRIPTION: Returns the EventInfo struct associated with this GPE. 400 * Validates the GpeBlock and the GpeNumber 401 * 402 * Should be called only when the GPE lists are semaphore locked 403 * and not subject to change. 404 * 405 ******************************************************************************/ 406 407ACPI_GPE_EVENT_INFO * 408AcpiEvGetGpeEventInfo ( 409 ACPI_HANDLE GpeDevice, 410 UINT32 GpeNumber) 411{ 412 ACPI_OPERAND_OBJECT *ObjDesc; 413 ACPI_GPE_BLOCK_INFO *GpeBlock; 414 ACPI_NATIVE_UINT i; 415 416 417 ACPI_FUNCTION_ENTRY (); 418 419 420 /* A NULL GpeBlock means use the FADT-defined GPE block(s) */ 421 422 if (!GpeDevice) 423 { 424 /* Examine GPE Block 0 and 1 (These blocks are permanent) */ 425 426 for (i = 0; i < ACPI_MAX_GPE_BLOCKS; i++) 427 { 428 GpeBlock = AcpiGbl_GpeFadtBlocks[i]; 429 if (GpeBlock) 430 { 431 if ((GpeNumber >= GpeBlock->BlockBaseNumber) && 432 (GpeNumber < GpeBlock->BlockBaseNumber + 433 (GpeBlock->RegisterCount * 8))) 434 { 435 return (&GpeBlock->EventInfo[GpeNumber - 436 GpeBlock->BlockBaseNumber]); 437 } 438 } 439 } 440 441 /* The GpeNumber was not in the range of either FADT GPE block */ 442 443 return (NULL); 444 } 445 446 /* A Non-NULL GpeDevice means this is a GPE Block Device */ 447 448 ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) GpeDevice); 449 if (!ObjDesc || 450 !ObjDesc->Device.GpeBlock) 451 { 452 return (NULL); 453 } 454 455 GpeBlock = ObjDesc->Device.GpeBlock; 456 457 if ((GpeNumber >= GpeBlock->BlockBaseNumber) && 458 (GpeNumber < GpeBlock->BlockBaseNumber + (GpeBlock->RegisterCount * 8))) 459 { 460 return (&GpeBlock->EventInfo[GpeNumber - GpeBlock->BlockBaseNumber]); 461 } 462 463 return (NULL); 464} 465 466 467/******************************************************************************* 468 * 469 * FUNCTION: AcpiEvGpeDetect 470 * 471 * PARAMETERS: GpeXruptList - Interrupt block for this interrupt. 472 * Can have multiple GPE blocks attached. 473 * 474 * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED 475 * 476 * DESCRIPTION: Detect if any GP events have occurred. This function is 477 * executed at interrupt level. 478 * 479 ******************************************************************************/ 480 481UINT32 482AcpiEvGpeDetect ( 483 ACPI_GPE_XRUPT_INFO *GpeXruptList) 484{ 485 ACPI_STATUS Status; 486 ACPI_GPE_BLOCK_INFO *GpeBlock; 487 ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; 488 UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED; 489 UINT8 EnabledStatusByte; 490 UINT32 StatusReg; 491 UINT32 EnableReg;
|
491 ACPI_NATIVE_UINT Flags;
|
492 ACPI_CPU_FLAGS Flags; |
493 ACPI_NATIVE_UINT i; 494 ACPI_NATIVE_UINT j; 495 496
|
496 ACPI_FUNCTION_NAME ("EvGpeDetect");
|
497 ACPI_FUNCTION_NAME (EvGpeDetect); |
498 499 /* Check for the case where there are no GPEs */ 500 501 if (!GpeXruptList) 502 { 503 return (IntStatus); 504 } 505
|
506 /* 507 * We need to obtain the GPE lock for both the data structs and registers 508 * Note: Not necessary to obtain the hardware lock, since the GPE registers 509 * are owned by the GpeLock. 510 */ 511 Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); 512 |
513 /* Examine all GPE blocks attached to this interrupt level */ 514
|
507 Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
515 GpeBlock = GpeXruptList->GpeBlockListHead; 516 while (GpeBlock) 517 { 518 /* 519 * Read all of the 8-bit GPE status and enable registers 520 * in this GPE block, saving all of them. 521 * Find all currently active GP events. 522 */ 523 for (i = 0; i < GpeBlock->RegisterCount; i++) 524 { 525 /* Get the next status/enable pair */ 526 527 GpeRegisterInfo = &GpeBlock->RegisterInfo[i]; 528 529 /* Read the Status Register */ 530 531 Status = AcpiHwLowLevelRead (ACPI_GPE_REGISTER_WIDTH, &StatusReg, 532 &GpeRegisterInfo->StatusAddress); 533 if (ACPI_FAILURE (Status)) 534 { 535 goto UnlockAndExit; 536 } 537 538 /* Read the Enable Register */ 539 540 Status = AcpiHwLowLevelRead (ACPI_GPE_REGISTER_WIDTH, &EnableReg, 541 &GpeRegisterInfo->EnableAddress); 542 if (ACPI_FAILURE (Status)) 543 { 544 goto UnlockAndExit; 545 } 546 547 ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS, 548 "Read GPE Register at GPE%X: Status=%02X, Enable=%02X\n", 549 GpeRegisterInfo->BaseGpeNumber, StatusReg, EnableReg)); 550 551 /* Check if there is anything active at all in this register */ 552 553 EnabledStatusByte = (UINT8) (StatusReg & EnableReg); 554 if (!EnabledStatusByte) 555 { 556 /* No active GPEs in this register, move on */ 557 558 continue; 559 } 560 561 /* Now look at the individual GPEs in this byte register */ 562 563 for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) 564 { 565 /* Examine one GPE bit */ 566
|
560 if (EnabledStatusByte & AcpiGbl_DecodeTo8bit[j])
|
567 if (EnabledStatusByte & (1 << j)) |
568 { 569 /* 570 * Found an active GPE. Dispatch the event to a handler 571 * or method. 572 */ 573 IntStatus |= AcpiEvGpeDispatch ( 574 &GpeBlock->EventInfo[(i * ACPI_GPE_REGISTER_WIDTH) + j], 575 (UINT32) j + GpeRegisterInfo->BaseGpeNumber); 576 } 577 } 578 } 579 580 GpeBlock = GpeBlock->Next; 581 } 582 583UnlockAndExit: 584 585 AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); 586 return (IntStatus); 587} 588 589 590/******************************************************************************* 591 * 592 * FUNCTION: AcpiEvAsynchExecuteGpeMethod 593 * 594 * PARAMETERS: Context (GpeEventInfo) - Info for this GPE 595 * 596 * RETURN: None 597 *
|
591 * DESCRIPTION: Perform the actual execution of a GPE control method. This
592 * function is called from an invocation of AcpiOsQueueForExecution
593 * (and therefore does NOT execute at interrupt level) so that
|
598 * DESCRIPTION: Perform the actual execution of a GPE control method. This 599 * function is called from an invocation of AcpiOsExecute and 600 * therefore does NOT execute at interrupt level - so that |
601 * the control method itself is not executed in the context of 602 * an interrupt handler. 603 * 604 ******************************************************************************/ 605 606static void ACPI_SYSTEM_XFACE 607AcpiEvAsynchExecuteGpeMethod ( 608 void *Context) 609{ 610 ACPI_GPE_EVENT_INFO *GpeEventInfo = (void *) Context;
|
604 UINT32 GpeNumber = 0;
|
611 ACPI_STATUS Status; 612 ACPI_GPE_EVENT_INFO LocalGpeEventInfo;
|
607 ACPI_PARAMETER_INFO Info;
|
613 ACPI_EVALUATE_INFO *Info; |
614 615
|
610 ACPI_FUNCTION_TRACE ("EvAsynchExecuteGpeMethod");
|
616 ACPI_FUNCTION_TRACE (EvAsynchExecuteGpeMethod); |
617 618 619 Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 620 if (ACPI_FAILURE (Status)) 621 { 622 return_VOID; 623 } 624 625 /* Must revalidate the GpeNumber/GpeBlock */ 626 627 if (!AcpiEvValidGpeEvent (GpeEventInfo)) 628 { 629 Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 630 return_VOID; 631 } 632 633 /* Set the GPE flags for return to enabled state */ 634 635 (void) AcpiEvEnableGpe (GpeEventInfo, FALSE); 636 637 /* 638 * Take a snapshot of the GPE info for this level - we copy the 639 * info to prevent a race condition with RemoveHandler/RemoveBlock. 640 */ 641 ACPI_MEMCPY (&LocalGpeEventInfo, GpeEventInfo, 642 sizeof (ACPI_GPE_EVENT_INFO)); 643 644 Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 645 if (ACPI_FAILURE (Status)) 646 { 647 return_VOID; 648 } 649 650 /* 651 * Must check for control method type dispatch one more 652 * time to avoid race with EvGpeInstallHandler 653 */ 654 if ((LocalGpeEventInfo.Flags & ACPI_GPE_DISPATCH_MASK) == 655 ACPI_GPE_DISPATCH_METHOD) 656 {
|
651 /*
652 * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx
653 * control method that corresponds to this GPE
654 */
655 Info.Node = LocalGpeEventInfo.Dispatch.MethodNode;
656 Info.Parameters = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT *, GpeEventInfo);
657 Info.ParameterType = ACPI_PARAM_GPE;
|
657 /* Allocate the evaluation information block */ |
658
|
659 Status = AcpiNsEvaluateByHandle (&Info);
|
659 Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); 660 if (!Info) 661 { 662 Status = AE_NO_MEMORY; 663 } 664 else 665 { 666 /* 667 * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx 668 * control method that corresponds to this GPE 669 */ 670 Info->PrefixNode = LocalGpeEventInfo.Dispatch.MethodNode; 671 Info->Parameters = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT *, GpeEventInfo); 672 Info->ParameterType = ACPI_PARAM_GPE; 673 Info->Flags = ACPI_IGNORE_RETURN_VALUE; 674 675 Status = AcpiNsEvaluate (Info); 676 ACPI_FREE (Info); 677 } 678 |
679 if (ACPI_FAILURE (Status)) 680 {
|
662 ACPI_REPORT_ERROR ((
663 "%s while evaluating method [%4.4s] for GPE[%2X]\n",
664 AcpiFormatException (Status),
665 AcpiUtGetNodeName (LocalGpeEventInfo.Dispatch.MethodNode),
666 GpeNumber));
|
681 ACPI_EXCEPTION ((AE_INFO, Status, 682 "while evaluating GPE method [%4.4s]", 683 AcpiUtGetNodeName (LocalGpeEventInfo.Dispatch.MethodNode))); |
684 } 685 } 686 687 if ((LocalGpeEventInfo.Flags & ACPI_GPE_XRUPT_TYPE_MASK) == 688 ACPI_GPE_LEVEL_TRIGGERED) 689 { 690 /* 691 * GPE is level-triggered, we clear the GPE status bit after 692 * handling the event. 693 */ 694 Status = AcpiHwClearGpe (&LocalGpeEventInfo); 695 if (ACPI_FAILURE (Status)) 696 { 697 return_VOID; 698 } 699 } 700 701 /* Enable this GPE */ 702 703 (void) AcpiHwWriteGpeEnableReg (&LocalGpeEventInfo); 704 return_VOID; 705} 706 707 708/******************************************************************************* 709 * 710 * FUNCTION: AcpiEvGpeDispatch 711 * 712 * PARAMETERS: GpeEventInfo - Info for this GPE 713 * GpeNumber - Number relative to the parent GPE block 714 * 715 * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED 716 * 717 * DESCRIPTION: Dispatch a General Purpose Event to either a function (e.g. EC) 718 * or method (e.g. _Lxx/_Exx) handler. 719 * 720 * This function executes at interrupt level. 721 * 722 ******************************************************************************/ 723 724UINT32 725AcpiEvGpeDispatch ( 726 ACPI_GPE_EVENT_INFO *GpeEventInfo, 727 UINT32 GpeNumber) 728{ 729 ACPI_STATUS Status; 730 731
|
715 ACPI_FUNCTION_TRACE ("EvGpeDispatch");
|
732 ACPI_FUNCTION_TRACE (EvGpeDispatch); |
733 734
|
735 AcpiGpeCount++; 736 |
737 /* 738 * If edge-triggered, clear the GPE status bit now. Note that 739 * level-triggered events are cleared after the GPE is serviced. 740 */ 741 if ((GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK) == 742 ACPI_GPE_EDGE_TRIGGERED) 743 { 744 Status = AcpiHwClearGpe (GpeEventInfo); 745 if (ACPI_FAILURE (Status)) 746 {
|
728 ACPI_REPORT_ERROR ((
729 "AcpiEvGpeDispatch: %s, Unable to clear GPE[%2X]\n",
730 AcpiFormatException (Status), GpeNumber));
|
747 ACPI_EXCEPTION ((AE_INFO, Status, 748 "Unable to clear GPE[%2X]", GpeNumber)); |
749 return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED); 750 } 751 } 752
|
735 /* Save current system state */
736
737 if (AcpiGbl_SystemAwakeAndRunning)
|
753 if (!AcpiGbl_SystemAwakeAndRunning) |
754 {
|
739 ACPI_SET_BIT (GpeEventInfo->Flags, ACPI_GPE_SYSTEM_RUNNING);
|
755 /* 756 * We just woke up because of a wake GPE. Disable any further GPEs 757 * until we are fully up and running (Only wake GPEs should be enabled 758 * at this time, but we just brute-force disable them all.) 759 * 1) We must disable this particular wake GPE so it won't fire again 760 * 2) We want to disable all wake GPEs, since we are now awake 761 */ 762 (void) AcpiHwDisableAllGpes (); |
763 }
|
741 else
742 {
743 ACPI_CLEAR_BIT (GpeEventInfo->Flags, ACPI_GPE_SYSTEM_RUNNING);
744 }
|
764 765 /*
|
747 * Dispatch the GPE to either an installed handler, or the control
748 * method associated with this GPE (_Lxx or _Exx).
749 * If a handler exists, we invoke it and do not attempt to run the method.
750 * If there is neither a handler nor a method, we disable the level to
751 * prevent further events from coming in here.
|
766 * Dispatch the GPE to either an installed handler, or the control method 767 * associated with this GPE (_Lxx or _Exx). If a handler exists, we invoke 768 * it and do not attempt to run the method. If there is neither a handler 769 * nor a method, we disable this GPE to prevent further such pointless 770 * events from firing. |
771 */ 772 switch (GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) 773 { 774 case ACPI_GPE_DISPATCH_HANDLER: 775 776 /* 777 * Invoke the installed handler (at interrupt level) 778 * Ignore return status for now. TBD: leave GPE disabled on error? 779 */ 780 (void) GpeEventInfo->Dispatch.Handler->Address ( 781 GpeEventInfo->Dispatch.Handler->Context); 782 783 /* It is now safe to clear level-triggered events. */ 784 785 if ((GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK) == 786 ACPI_GPE_LEVEL_TRIGGERED) 787 { 788 Status = AcpiHwClearGpe (GpeEventInfo); 789 if (ACPI_FAILURE (Status)) 790 {
|
772 ACPI_REPORT_ERROR ((
773 "AcpiEvGpeDispatch: %s, Unable to clear GPE[%2X]\n",
774 AcpiFormatException (Status), GpeNumber));
|
791 ACPI_EXCEPTION ((AE_INFO, Status, 792 "Unable to clear GPE[%2X]", GpeNumber)); |
793 return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED); 794 } 795 } 796 break; 797 798 case ACPI_GPE_DISPATCH_METHOD: 799 800 /*
|
783 * Disable GPE, so it doesn't keep firing before the method has a
784 * chance to run.
|
801 * Disable the GPE, so it doesn't keep firing before the method has a 802 * chance to run (it runs asynchronously with interrupts enabled). |
803 */ 804 Status = AcpiEvDisableGpe (GpeEventInfo); 805 if (ACPI_FAILURE (Status)) 806 {
|
789 ACPI_REPORT_ERROR ((
790 "AcpiEvGpeDispatch: %s, Unable to disable GPE[%2X]\n",
791 AcpiFormatException (Status), GpeNumber));
|
807 ACPI_EXCEPTION ((AE_INFO, Status, 808 "Unable to disable GPE[%2X]", GpeNumber)); |
809 return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED); 810 } 811 812 /* 813 * Execute the method associated with the GPE 814 * NOTE: Level-triggered GPEs are cleared after the method completes. 815 */
|
799 Status = AcpiOsQueueForExecution (OSD_PRIORITY_GPE,
|
816 Status = AcpiOsExecute (OSL_GPE_HANDLER, |
817 AcpiEvAsynchExecuteGpeMethod, GpeEventInfo); 818 if (ACPI_FAILURE (Status)) 819 {
|
803 ACPI_REPORT_ERROR ((
804 "AcpiEvGpeDispatch: %s, Unable to queue handler for GPE[%2X] - event disabled\n",
805 AcpiFormatException (Status), GpeNumber));
|
820 ACPI_EXCEPTION ((AE_INFO, Status, 821 "Unable to queue handler for GPE[%2X] - event disabled", 822 GpeNumber)); |
823 } 824 break; 825 826 default: 827 828 /* No handler or method to run! */ 829
|
813 ACPI_REPORT_ERROR ((
814 "AcpiEvGpeDispatch: No handler or method for GPE[%2X], disabling event\n",
|
830 ACPI_ERROR ((AE_INFO, 831 "No handler or method for GPE[%2X], disabling event", |
832 GpeNumber)); 833 834 /*
|
818 * Disable the GPE. The GPE will remain disabled until the ACPI
|
835 * Disable the GPE. The GPE will remain disabled until the ACPI |
836 * Core Subsystem is restarted, or a handler is installed. 837 */ 838 Status = AcpiEvDisableGpe (GpeEventInfo); 839 if (ACPI_FAILURE (Status)) 840 {
|
824 ACPI_REPORT_ERROR ((
825 "AcpiEvGpeDispatch: %s, Unable to disable GPE[%2X]\n",
826 AcpiFormatException (Status), GpeNumber));
|
841 ACPI_EXCEPTION ((AE_INFO, Status, 842 "Unable to disable GPE[%2X]", GpeNumber)); |
843 return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED); 844 } 845 break; 846 } 847 848 return_UINT32 (ACPI_INTERRUPT_HANDLED); 849} 850
|
835
836#ifdef ACPI_GPE_NOTIFY_CHECK
837/*******************************************************************************
838 * TBD: NOT USED, PROTOTYPE ONLY AND WILL PROBABLY BE REMOVED
839 *
840 * FUNCTION: AcpiEvCheckForWakeOnlyGpe
841 *
842 * PARAMETERS: GpeEventInfo - info for this GPE
843 *
844 * RETURN: Status
845 *
846 * DESCRIPTION: Determine if a a GPE is "wake-only".
847 *
848 * Called from Notify() code in interpreter when a "DeviceWake"
849 * Notify comes in.
850 *
851 ******************************************************************************/
852
853ACPI_STATUS
854AcpiEvCheckForWakeOnlyGpe (
855 ACPI_GPE_EVENT_INFO *GpeEventInfo)
856{
857 ACPI_STATUS Status;
858
859
860 ACPI_FUNCTION_TRACE ("EvCheckForWakeOnlyGpe");
861
862
863 if ((GpeEventInfo) && /* Only >0 for _Lxx/_Exx */
864 ((GpeEventInfo->Flags & ACPI_GPE_SYSTEM_MASK) == ACPI_GPE_SYSTEM_RUNNING)) /* System state at GPE time */
865 {
866 /* This must be a wake-only GPE, disable it */
867
868 Status = AcpiEvDisableGpe (GpeEventInfo);
869
870 /* Set GPE to wake-only. Do not change wake disabled/enabled status */
871
872 AcpiEvSetGpeType (GpeEventInfo, ACPI_GPE_TYPE_WAKE);
873
874 ACPI_REPORT_INFO (("GPE %p was updated from wake/run to wake-only\n",
875 GpeEventInfo));
876
877 /* This was a wake-only GPE */
878
879 return_ACPI_STATUS (AE_WAKE_ONLY_GPE);
880 }
881
882 return_ACPI_STATUS (AE_OK);
883}
884#endif
885
886
|
|