| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: evgpeblk - GPE block creation and initialization. |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | #include "acevents.h" |
| 47 | #include "acnamesp.h" |
| 48 | |
| 49 | #define _COMPONENT ACPI_EVENTS |
| 50 | ACPI_MODULE_NAME ("evgpeblk" ) |
| 51 | |
| 52 | #if (!ACPI_REDUCED_HARDWARE) /* Entire module */ |
| 53 | |
| 54 | /* Local prototypes */ |
| 55 | |
| 56 | static ACPI_STATUS |
| 57 | AcpiEvInstallGpeBlock ( |
| 58 | ACPI_GPE_BLOCK_INFO *GpeBlock, |
| 59 | UINT32 InterruptNumber); |
| 60 | |
| 61 | static ACPI_STATUS |
| 62 | AcpiEvCreateGpeInfoBlocks ( |
| 63 | ACPI_GPE_BLOCK_INFO *GpeBlock); |
| 64 | |
| 65 | |
| 66 | /******************************************************************************* |
| 67 | * |
| 68 | * FUNCTION: AcpiEvInstallGpeBlock |
| 69 | * |
| 70 | * PARAMETERS: GpeBlock - New GPE block |
| 71 | * InterruptNumber - Xrupt to be associated with this |
| 72 | * GPE block |
| 73 | * |
| 74 | * RETURN: Status |
| 75 | * |
| 76 | * DESCRIPTION: Install new GPE block with mutex support |
| 77 | * |
| 78 | ******************************************************************************/ |
| 79 | |
| 80 | static ACPI_STATUS |
| 81 | AcpiEvInstallGpeBlock ( |
| 82 | ACPI_GPE_BLOCK_INFO *GpeBlock, |
| 83 | UINT32 InterruptNumber) |
| 84 | { |
| 85 | ACPI_GPE_BLOCK_INFO *NextGpeBlock; |
| 86 | ACPI_GPE_XRUPT_INFO *GpeXruptBlock; |
| 87 | ACPI_STATUS Status; |
| 88 | ACPI_CPU_FLAGS Flags; |
| 89 | |
| 90 | |
| 91 | ACPI_FUNCTION_TRACE (EvInstallGpeBlock); |
| 92 | |
| 93 | |
| 94 | Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); |
| 95 | if (ACPI_FAILURE (Status)) |
| 96 | { |
| 97 | return_ACPI_STATUS (Status); |
| 98 | } |
| 99 | |
| 100 | Status = AcpiEvGetGpeXruptBlock (InterruptNumber, &GpeXruptBlock); |
| 101 | if (ACPI_FAILURE (Status)) |
| 102 | { |
| 103 | goto UnlockAndExit; |
| 104 | } |
| 105 | |
| 106 | /* Install the new block at the end of the list with lock */ |
| 107 | |
| 108 | Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
| 109 | if (GpeXruptBlock->GpeBlockListHead) |
| 110 | { |
| 111 | NextGpeBlock = GpeXruptBlock->GpeBlockListHead; |
| 112 | while (NextGpeBlock->Next) |
| 113 | { |
| 114 | NextGpeBlock = NextGpeBlock->Next; |
| 115 | } |
| 116 | |
| 117 | NextGpeBlock->Next = GpeBlock; |
| 118 | GpeBlock->Previous = NextGpeBlock; |
| 119 | } |
| 120 | else |
| 121 | { |
| 122 | GpeXruptBlock->GpeBlockListHead = GpeBlock; |
| 123 | } |
| 124 | |
| 125 | GpeBlock->XruptBlock = GpeXruptBlock; |
| 126 | AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
| 127 | |
| 128 | |
| 129 | UnlockAndExit: |
| 130 | (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); |
| 131 | return_ACPI_STATUS (Status); |
| 132 | } |
| 133 | |
| 134 | |
| 135 | /******************************************************************************* |
| 136 | * |
| 137 | * FUNCTION: AcpiEvDeleteGpeBlock |
| 138 | * |
| 139 | * PARAMETERS: GpeBlock - Existing GPE block |
| 140 | * |
| 141 | * RETURN: Status |
| 142 | * |
| 143 | * DESCRIPTION: Remove a GPE block |
| 144 | * |
| 145 | ******************************************************************************/ |
| 146 | |
| 147 | ACPI_STATUS |
| 148 | AcpiEvDeleteGpeBlock ( |
| 149 | ACPI_GPE_BLOCK_INFO *GpeBlock) |
| 150 | { |
| 151 | ACPI_STATUS Status; |
| 152 | ACPI_CPU_FLAGS Flags; |
| 153 | |
| 154 | |
| 155 | ACPI_FUNCTION_TRACE (EvInstallGpeBlock); |
| 156 | |
| 157 | |
| 158 | Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); |
| 159 | if (ACPI_FAILURE (Status)) |
| 160 | { |
| 161 | return_ACPI_STATUS (Status); |
| 162 | } |
| 163 | |
| 164 | /* Disable all GPEs in this block */ |
| 165 | |
| 166 | Status = AcpiHwDisableGpeBlock (GpeBlock->XruptBlock, GpeBlock, NULL); |
| 167 | |
| 168 | if (!GpeBlock->Previous && !GpeBlock->Next) |
| 169 | { |
| 170 | /* This is the last GpeBlock on this interrupt */ |
| 171 | |
| 172 | Status = AcpiEvDeleteGpeXrupt (GpeBlock->XruptBlock); |
| 173 | if (ACPI_FAILURE (Status)) |
| 174 | { |
| 175 | goto UnlockAndExit; |
| 176 | } |
| 177 | } |
| 178 | else |
| 179 | { |
| 180 | /* Remove the block on this interrupt with lock */ |
| 181 | |
| 182 | Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
| 183 | if (GpeBlock->Previous) |
| 184 | { |
| 185 | GpeBlock->Previous->Next = GpeBlock->Next; |
| 186 | } |
| 187 | else |
| 188 | { |
| 189 | GpeBlock->XruptBlock->GpeBlockListHead = GpeBlock->Next; |
| 190 | } |
| 191 | |
| 192 | if (GpeBlock->Next) |
| 193 | { |
| 194 | GpeBlock->Next->Previous = GpeBlock->Previous; |
| 195 | } |
| 196 | |
| 197 | AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
| 198 | } |
| 199 | |
| 200 | AcpiCurrentGpeCount -= GpeBlock->GpeCount; |
| 201 | |
| 202 | /* Free the GpeBlock */ |
| 203 | |
| 204 | ACPI_FREE (GpeBlock->RegisterInfo); |
| 205 | ACPI_FREE (GpeBlock->EventInfo); |
| 206 | ACPI_FREE (GpeBlock); |
| 207 | |
| 208 | UnlockAndExit: |
| 209 | Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); |
| 210 | return_ACPI_STATUS (Status); |
| 211 | } |
| 212 | |
| 213 | |
| 214 | /******************************************************************************* |
| 215 | * |
| 216 | * FUNCTION: AcpiEvCreateGpeInfoBlocks |
| 217 | * |
| 218 | * PARAMETERS: GpeBlock - New GPE block |
| 219 | * |
| 220 | * RETURN: Status |
| 221 | * |
| 222 | * DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block |
| 223 | * |
| 224 | ******************************************************************************/ |
| 225 | |
| 226 | static ACPI_STATUS |
| 227 | AcpiEvCreateGpeInfoBlocks ( |
| 228 | ACPI_GPE_BLOCK_INFO *GpeBlock) |
| 229 | { |
| 230 | ACPI_GPE_REGISTER_INFO *GpeRegisterInfo = NULL; |
| 231 | ACPI_GPE_EVENT_INFO *GpeEventInfo = NULL; |
| 232 | ACPI_GPE_EVENT_INFO *ThisEvent; |
| 233 | ACPI_GPE_REGISTER_INFO *ThisRegister; |
| 234 | UINT32 i; |
| 235 | UINT32 j; |
| 236 | ACPI_STATUS Status; |
| 237 | |
| 238 | |
| 239 | ACPI_FUNCTION_TRACE (EvCreateGpeInfoBlocks); |
| 240 | |
| 241 | |
| 242 | /* Allocate the GPE register information block */ |
| 243 | |
| 244 | GpeRegisterInfo = ACPI_ALLOCATE_ZEROED ( |
| 245 | (ACPI_SIZE) GpeBlock->RegisterCount * |
| 246 | sizeof (ACPI_GPE_REGISTER_INFO)); |
| 247 | if (!GpeRegisterInfo) |
| 248 | { |
| 249 | ACPI_ERROR ((AE_INFO, |
| 250 | "Could not allocate the GpeRegisterInfo table" )); |
| 251 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 252 | } |
| 253 | |
| 254 | /* |
| 255 | * Allocate the GPE EventInfo block. There are eight distinct GPEs |
| 256 | * per register. Initialization to zeros is sufficient. |
| 257 | */ |
| 258 | GpeEventInfo = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) GpeBlock->GpeCount * |
| 259 | sizeof (ACPI_GPE_EVENT_INFO)); |
| 260 | if (!GpeEventInfo) |
| 261 | { |
| 262 | ACPI_ERROR ((AE_INFO, |
| 263 | "Could not allocate the GpeEventInfo table" )); |
| 264 | Status = AE_NO_MEMORY; |
| 265 | goto ErrorExit; |
| 266 | } |
| 267 | |
| 268 | /* Save the new Info arrays in the GPE block */ |
| 269 | |
| 270 | GpeBlock->RegisterInfo = GpeRegisterInfo; |
| 271 | GpeBlock->EventInfo = GpeEventInfo; |
| 272 | |
| 273 | /* |
| 274 | * Initialize the GPE Register and Event structures. A goal of these |
| 275 | * tables is to hide the fact that there are two separate GPE register |
| 276 | * sets in a given GPE hardware block, the status registers occupy the |
| 277 | * first half, and the enable registers occupy the second half. |
| 278 | */ |
| 279 | ThisRegister = GpeRegisterInfo; |
| 280 | ThisEvent = GpeEventInfo; |
| 281 | |
| 282 | for (i = 0; i < GpeBlock->RegisterCount; i++) |
| 283 | { |
| 284 | /* Init the RegisterInfo for this GPE register (8 GPEs) */ |
| 285 | |
| 286 | ThisRegister->BaseGpeNumber = (UINT16) |
| 287 | (GpeBlock->BlockBaseNumber + (i * ACPI_GPE_REGISTER_WIDTH)); |
| 288 | |
| 289 | ThisRegister->StatusAddress.Address = |
| 290 | GpeBlock->Address + i; |
| 291 | |
| 292 | ThisRegister->EnableAddress.Address = |
| 293 | GpeBlock->Address + i + GpeBlock->RegisterCount; |
| 294 | |
| 295 | ThisRegister->StatusAddress.SpaceId = GpeBlock->SpaceId; |
| 296 | ThisRegister->EnableAddress.SpaceId = GpeBlock->SpaceId; |
| 297 | ThisRegister->StatusAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH; |
| 298 | ThisRegister->EnableAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH; |
| 299 | ThisRegister->StatusAddress.BitOffset = 0; |
| 300 | ThisRegister->EnableAddress.BitOffset = 0; |
| 301 | |
| 302 | /* Init the EventInfo for each GPE within this register */ |
| 303 | |
| 304 | for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) |
| 305 | { |
| 306 | ThisEvent->GpeNumber = (UINT8) (ThisRegister->BaseGpeNumber + j); |
| 307 | ThisEvent->RegisterInfo = ThisRegister; |
| 308 | ThisEvent++; |
| 309 | } |
| 310 | |
| 311 | /* Disable all GPEs within this register */ |
| 312 | |
| 313 | Status = AcpiHwWrite (0x00, &ThisRegister->EnableAddress); |
| 314 | if (ACPI_FAILURE (Status)) |
| 315 | { |
| 316 | goto ErrorExit; |
| 317 | } |
| 318 | |
| 319 | /* Clear any pending GPE events within this register */ |
| 320 | |
| 321 | Status = AcpiHwWrite (0xFF, &ThisRegister->StatusAddress); |
| 322 | if (ACPI_FAILURE (Status)) |
| 323 | { |
| 324 | goto ErrorExit; |
| 325 | } |
| 326 | |
| 327 | ThisRegister++; |
| 328 | } |
| 329 | |
| 330 | return_ACPI_STATUS (AE_OK); |
| 331 | |
| 332 | |
| 333 | ErrorExit: |
| 334 | if (GpeRegisterInfo) |
| 335 | { |
| 336 | ACPI_FREE (GpeRegisterInfo); |
| 337 | } |
| 338 | if (GpeEventInfo) |
| 339 | { |
| 340 | ACPI_FREE (GpeEventInfo); |
| 341 | } |
| 342 | |
| 343 | return_ACPI_STATUS (Status); |
| 344 | } |
| 345 | |
| 346 | |
| 347 | /******************************************************************************* |
| 348 | * |
| 349 | * FUNCTION: AcpiEvCreateGpeBlock |
| 350 | * |
| 351 | * PARAMETERS: GpeDevice - Handle to the parent GPE block |
| 352 | * GpeBlockAddress - Address and SpaceID |
| 353 | * RegisterCount - Number of GPE register pairs in the block |
| 354 | * GpeBlockBaseNumber - Starting GPE number for the block |
| 355 | * InterruptNumber - H/W interrupt for the block |
| 356 | * ReturnGpeBlock - Where the new block descriptor is returned |
| 357 | * |
| 358 | * RETURN: Status |
| 359 | * |
| 360 | * DESCRIPTION: Create and Install a block of GPE registers. All GPEs within |
| 361 | * the block are disabled at exit. |
| 362 | * Note: Assumes namespace is locked. |
| 363 | * |
| 364 | ******************************************************************************/ |
| 365 | |
| 366 | ACPI_STATUS |
| 367 | AcpiEvCreateGpeBlock ( |
| 368 | ACPI_NAMESPACE_NODE *GpeDevice, |
| 369 | UINT64 Address, |
| 370 | UINT8 SpaceId, |
| 371 | UINT32 RegisterCount, |
| 372 | UINT16 GpeBlockBaseNumber, |
| 373 | UINT32 InterruptNumber, |
| 374 | ACPI_GPE_BLOCK_INFO **ReturnGpeBlock) |
| 375 | { |
| 376 | ACPI_STATUS Status; |
| 377 | ACPI_GPE_BLOCK_INFO *GpeBlock; |
| 378 | ACPI_GPE_WALK_INFO WalkInfo; |
| 379 | |
| 380 | |
| 381 | ACPI_FUNCTION_TRACE (EvCreateGpeBlock); |
| 382 | |
| 383 | |
| 384 | if (!RegisterCount) |
| 385 | { |
| 386 | return_ACPI_STATUS (AE_OK); |
| 387 | } |
| 388 | |
| 389 | /* Allocate a new GPE block */ |
| 390 | |
| 391 | GpeBlock = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_BLOCK_INFO)); |
| 392 | if (!GpeBlock) |
| 393 | { |
| 394 | return_ACPI_STATUS (AE_NO_MEMORY); |
| 395 | } |
| 396 | |
| 397 | /* Initialize the new GPE block */ |
| 398 | |
| 399 | GpeBlock->Address = Address; |
| 400 | GpeBlock->SpaceId = SpaceId; |
| 401 | GpeBlock->Node = GpeDevice; |
| 402 | GpeBlock->GpeCount = (UINT16) (RegisterCount * ACPI_GPE_REGISTER_WIDTH); |
| 403 | GpeBlock->Initialized = FALSE; |
| 404 | GpeBlock->RegisterCount = RegisterCount; |
| 405 | GpeBlock->BlockBaseNumber = GpeBlockBaseNumber; |
| 406 | |
| 407 | /* |
| 408 | * Create the RegisterInfo and EventInfo sub-structures |
| 409 | * Note: disables and clears all GPEs in the block |
| 410 | */ |
| 411 | Status = AcpiEvCreateGpeInfoBlocks (GpeBlock); |
| 412 | if (ACPI_FAILURE (Status)) |
| 413 | { |
| 414 | ACPI_FREE (GpeBlock); |
| 415 | return_ACPI_STATUS (Status); |
| 416 | } |
| 417 | |
| 418 | /* Install the new block in the global lists */ |
| 419 | |
| 420 | Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptNumber); |
| 421 | if (ACPI_FAILURE (Status)) |
| 422 | { |
| 423 | ACPI_FREE (GpeBlock->RegisterInfo); |
| 424 | ACPI_FREE (GpeBlock->EventInfo); |
| 425 | ACPI_FREE (GpeBlock); |
| 426 | return_ACPI_STATUS (Status); |
| 427 | } |
| 428 | |
| 429 | AcpiGbl_AllGpesInitialized = FALSE; |
| 430 | |
| 431 | /* Find all GPE methods (_Lxx or_Exx) for this block */ |
| 432 | |
| 433 | WalkInfo.GpeBlock = GpeBlock; |
| 434 | WalkInfo.GpeDevice = GpeDevice; |
| 435 | WalkInfo.ExecuteByOwnerId = FALSE; |
| 436 | |
| 437 | Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice, |
| 438 | ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, |
| 439 | AcpiEvMatchGpeMethod, NULL, &WalkInfo, NULL); |
| 440 | |
| 441 | /* Return the new block */ |
| 442 | |
| 443 | if (ReturnGpeBlock) |
| 444 | { |
| 445 | (*ReturnGpeBlock) = GpeBlock; |
| 446 | } |
| 447 | |
| 448 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, |
| 449 | " Initialized GPE %02X to %02X [%4.4s] %u regs on interrupt 0x%X%s\n" , |
| 450 | (UINT32) GpeBlock->BlockBaseNumber, |
| 451 | (UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1)), |
| 452 | GpeDevice->Name.Ascii, GpeBlock->RegisterCount, InterruptNumber, |
| 453 | InterruptNumber == AcpiGbl_FADT.SciInterrupt ? " (SCI)" : "" )); |
| 454 | |
| 455 | /* Update global count of currently available GPEs */ |
| 456 | |
| 457 | AcpiCurrentGpeCount += GpeBlock->GpeCount; |
| 458 | return_ACPI_STATUS (AE_OK); |
| 459 | } |
| 460 | |
| 461 | |
| 462 | /******************************************************************************* |
| 463 | * |
| 464 | * FUNCTION: AcpiEvInitializeGpeBlock |
| 465 | * |
| 466 | * PARAMETERS: ACPI_GPE_CALLBACK |
| 467 | * |
| 468 | * RETURN: Status |
| 469 | * |
| 470 | * DESCRIPTION: Initialize and enable a GPE block. Enable GPEs that have |
| 471 | * associated methods. |
| 472 | * Note: Assumes namespace is locked. |
| 473 | * |
| 474 | ******************************************************************************/ |
| 475 | |
| 476 | ACPI_STATUS |
| 477 | AcpiEvInitializeGpeBlock ( |
| 478 | ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| 479 | ACPI_GPE_BLOCK_INFO *GpeBlock, |
| 480 | void *Ignored) |
| 481 | { |
| 482 | ACPI_STATUS Status; |
| 483 | ACPI_GPE_EVENT_INFO *GpeEventInfo; |
| 484 | UINT32 GpeEnabledCount; |
| 485 | UINT32 GpeIndex; |
| 486 | UINT32 i; |
| 487 | UINT32 j; |
| 488 | |
| 489 | |
| 490 | ACPI_FUNCTION_TRACE (EvInitializeGpeBlock); |
| 491 | |
| 492 | |
| 493 | /* |
| 494 | * Ignore a null GPE block (e.g., if no GPE block 1 exists), and |
| 495 | * any GPE blocks that have been initialized already. |
| 496 | */ |
| 497 | if (!GpeBlock || GpeBlock->Initialized) |
| 498 | { |
| 499 | return_ACPI_STATUS (AE_OK); |
| 500 | } |
| 501 | |
| 502 | /* |
| 503 | * Enable all GPEs that have a corresponding method and have the |
| 504 | * ACPI_GPE_CAN_WAKE flag unset. Any other GPEs within this block |
| 505 | * must be enabled via the acpi_enable_gpe() interface. |
| 506 | */ |
| 507 | GpeEnabledCount = 0; |
| 508 | |
| 509 | for (i = 0; i < GpeBlock->RegisterCount; i++) |
| 510 | { |
| 511 | for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) |
| 512 | { |
| 513 | /* Get the info block for this particular GPE */ |
| 514 | |
| 515 | GpeIndex = (i * ACPI_GPE_REGISTER_WIDTH) + j; |
| 516 | GpeEventInfo = &GpeBlock->EventInfo[GpeIndex]; |
| 517 | |
| 518 | /* |
| 519 | * Ignore GPEs that have no corresponding _Lxx/_Exx method |
| 520 | * and GPEs that are used to wake the system |
| 521 | */ |
| 522 | if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_NONE) || |
| 523 | (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_HANDLER) || |
| 524 | (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_RAW_HANDLER) || |
| 525 | (GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE)) |
| 526 | { |
| 527 | continue; |
| 528 | } |
| 529 | |
| 530 | Status = AcpiEvAddGpeReference (GpeEventInfo); |
| 531 | if (ACPI_FAILURE (Status)) |
| 532 | { |
| 533 | ACPI_EXCEPTION ((AE_INFO, Status, |
| 534 | "Could not enable GPE 0x%02X" , |
| 535 | GpeIndex + GpeBlock->BlockBaseNumber)); |
| 536 | continue; |
| 537 | } |
| 538 | |
| 539 | GpeEnabledCount++; |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | if (GpeEnabledCount) |
| 544 | { |
| 545 | ACPI_INFO (( |
| 546 | "Enabled %u GPEs in block %02X to %02X" , GpeEnabledCount, |
| 547 | (UINT32) GpeBlock->BlockBaseNumber, |
| 548 | (UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1)))); |
| 549 | } |
| 550 | |
| 551 | GpeBlock->Initialized = TRUE; |
| 552 | return_ACPI_STATUS (AE_OK); |
| 553 | } |
| 554 | |
| 555 | #endif /* !ACPI_REDUCED_HARDWARE */ |
| 556 | |