| /****************************************************************************** |
| * |
| * Module Name: evgpeblk - GPE block creation and initialization. |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acevents.h" |
| #include "acnamesp.h" |
| |
| #define _COMPONENT ACPI_EVENTS |
| ACPI_MODULE_NAME ("evgpeblk") |
| |
| #if (!ACPI_REDUCED_HARDWARE) /* Entire module */ |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiEvInstallGpeBlock ( |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| UINT32 InterruptNumber); |
| |
| static ACPI_STATUS |
| AcpiEvCreateGpeInfoBlocks ( |
| ACPI_GPE_BLOCK_INFO *GpeBlock); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvInstallGpeBlock |
| * |
| * PARAMETERS: GpeBlock - New GPE block |
| * InterruptNumber - Xrupt to be associated with this |
| * GPE block |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Install new GPE block with mutex support |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiEvInstallGpeBlock ( |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| UINT32 InterruptNumber) |
| { |
| ACPI_GPE_BLOCK_INFO *NextGpeBlock; |
| ACPI_GPE_XRUPT_INFO *GpeXruptBlock; |
| ACPI_STATUS Status; |
| ACPI_CPU_FLAGS Flags; |
| |
| |
| ACPI_FUNCTION_TRACE (EvInstallGpeBlock); |
| |
| |
| Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiEvGetGpeXruptBlock (InterruptNumber, &GpeXruptBlock); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto UnlockAndExit; |
| } |
| |
| /* Install the new block at the end of the list with lock */ |
| |
| Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
| if (GpeXruptBlock->GpeBlockListHead) |
| { |
| NextGpeBlock = GpeXruptBlock->GpeBlockListHead; |
| while (NextGpeBlock->Next) |
| { |
| NextGpeBlock = NextGpeBlock->Next; |
| } |
| |
| NextGpeBlock->Next = GpeBlock; |
| GpeBlock->Previous = NextGpeBlock; |
| } |
| else |
| { |
| GpeXruptBlock->GpeBlockListHead = GpeBlock; |
| } |
| |
| GpeBlock->XruptBlock = GpeXruptBlock; |
| AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
| |
| |
| UnlockAndExit: |
| (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvDeleteGpeBlock |
| * |
| * PARAMETERS: GpeBlock - Existing GPE block |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Remove a GPE block |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEvDeleteGpeBlock ( |
| ACPI_GPE_BLOCK_INFO *GpeBlock) |
| { |
| ACPI_STATUS Status; |
| ACPI_CPU_FLAGS Flags; |
| |
| |
| ACPI_FUNCTION_TRACE (EvInstallGpeBlock); |
| |
| |
| Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Disable all GPEs in this block */ |
| |
| Status = AcpiHwDisableGpeBlock (GpeBlock->XruptBlock, GpeBlock, NULL); |
| |
| if (!GpeBlock->Previous && !GpeBlock->Next) |
| { |
| /* This is the last GpeBlock on this interrupt */ |
| |
| Status = AcpiEvDeleteGpeXrupt (GpeBlock->XruptBlock); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto UnlockAndExit; |
| } |
| } |
| else |
| { |
| /* Remove the block on this interrupt with lock */ |
| |
| Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
| if (GpeBlock->Previous) |
| { |
| GpeBlock->Previous->Next = GpeBlock->Next; |
| } |
| else |
| { |
| GpeBlock->XruptBlock->GpeBlockListHead = GpeBlock->Next; |
| } |
| |
| if (GpeBlock->Next) |
| { |
| GpeBlock->Next->Previous = GpeBlock->Previous; |
| } |
| |
| AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
| } |
| |
| AcpiCurrentGpeCount -= GpeBlock->GpeCount; |
| |
| /* Free the GpeBlock */ |
| |
| ACPI_FREE (GpeBlock->RegisterInfo); |
| ACPI_FREE (GpeBlock->EventInfo); |
| ACPI_FREE (GpeBlock); |
| |
| UnlockAndExit: |
| Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvCreateGpeInfoBlocks |
| * |
| * PARAMETERS: GpeBlock - New GPE block |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiEvCreateGpeInfoBlocks ( |
| ACPI_GPE_BLOCK_INFO *GpeBlock) |
| { |
| ACPI_GPE_REGISTER_INFO *GpeRegisterInfo = NULL; |
| ACPI_GPE_EVENT_INFO *GpeEventInfo = NULL; |
| ACPI_GPE_EVENT_INFO *ThisEvent; |
| ACPI_GPE_REGISTER_INFO *ThisRegister; |
| UINT32 i; |
| UINT32 j; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (EvCreateGpeInfoBlocks); |
| |
| |
| /* Allocate the GPE register information block */ |
| |
| GpeRegisterInfo = ACPI_ALLOCATE_ZEROED ( |
| (ACPI_SIZE) GpeBlock->RegisterCount * |
| sizeof (ACPI_GPE_REGISTER_INFO)); |
| if (!GpeRegisterInfo) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Could not allocate the GpeRegisterInfo table")); |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| /* |
| * Allocate the GPE EventInfo block. There are eight distinct GPEs |
| * per register. Initialization to zeros is sufficient. |
| */ |
| GpeEventInfo = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) GpeBlock->GpeCount * |
| sizeof (ACPI_GPE_EVENT_INFO)); |
| if (!GpeEventInfo) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Could not allocate the GpeEventInfo table")); |
| Status = AE_NO_MEMORY; |
| goto ErrorExit; |
| } |
| |
| /* Save the new Info arrays in the GPE block */ |
| |
| GpeBlock->RegisterInfo = GpeRegisterInfo; |
| GpeBlock->EventInfo = GpeEventInfo; |
| |
| /* |
| * Initialize the GPE Register and Event structures. A goal of these |
| * tables is to hide the fact that there are two separate GPE register |
| * sets in a given GPE hardware block, the status registers occupy the |
| * first half, and the enable registers occupy the second half. |
| */ |
| ThisRegister = GpeRegisterInfo; |
| ThisEvent = GpeEventInfo; |
| |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| /* Init the RegisterInfo for this GPE register (8 GPEs) */ |
| |
| ThisRegister->BaseGpeNumber = (UINT16) |
| (GpeBlock->BlockBaseNumber + (i * ACPI_GPE_REGISTER_WIDTH)); |
| |
| ThisRegister->StatusAddress.Address = |
| GpeBlock->Address + i; |
| |
| ThisRegister->EnableAddress.Address = |
| GpeBlock->Address + i + GpeBlock->RegisterCount; |
| |
| ThisRegister->StatusAddress.SpaceId = GpeBlock->SpaceId; |
| ThisRegister->EnableAddress.SpaceId = GpeBlock->SpaceId; |
| ThisRegister->StatusAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH; |
| ThisRegister->EnableAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH; |
| ThisRegister->StatusAddress.BitOffset = 0; |
| ThisRegister->EnableAddress.BitOffset = 0; |
| |
| /* Init the EventInfo for each GPE within this register */ |
| |
| for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) |
| { |
| ThisEvent->GpeNumber = (UINT8) (ThisRegister->BaseGpeNumber + j); |
| ThisEvent->RegisterInfo = ThisRegister; |
| ThisEvent++; |
| } |
| |
| /* Disable all GPEs within this register */ |
| |
| Status = AcpiHwWrite (0x00, &ThisRegister->EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto ErrorExit; |
| } |
| |
| /* Clear any pending GPE events within this register */ |
| |
| Status = AcpiHwWrite (0xFF, &ThisRegister->StatusAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto ErrorExit; |
| } |
| |
| ThisRegister++; |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| |
| |
| ErrorExit: |
| if (GpeRegisterInfo) |
| { |
| ACPI_FREE (GpeRegisterInfo); |
| } |
| if (GpeEventInfo) |
| { |
| ACPI_FREE (GpeEventInfo); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvCreateGpeBlock |
| * |
| * PARAMETERS: GpeDevice - Handle to the parent GPE block |
| * GpeBlockAddress - Address and SpaceID |
| * RegisterCount - Number of GPE register pairs in the block |
| * GpeBlockBaseNumber - Starting GPE number for the block |
| * InterruptNumber - H/W interrupt for the block |
| * ReturnGpeBlock - Where the new block descriptor is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Create and Install a block of GPE registers. All GPEs within |
| * the block are disabled at exit. |
| * Note: Assumes namespace is locked. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEvCreateGpeBlock ( |
| ACPI_NAMESPACE_NODE *GpeDevice, |
| UINT64 Address, |
| UINT8 SpaceId, |
| UINT32 RegisterCount, |
| UINT16 GpeBlockBaseNumber, |
| UINT32 InterruptNumber, |
| ACPI_GPE_BLOCK_INFO **ReturnGpeBlock) |
| { |
| ACPI_STATUS Status; |
| ACPI_GPE_BLOCK_INFO *GpeBlock; |
| ACPI_GPE_WALK_INFO WalkInfo; |
| |
| |
| ACPI_FUNCTION_TRACE (EvCreateGpeBlock); |
| |
| |
| if (!RegisterCount) |
| { |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| /* Allocate a new GPE block */ |
| |
| GpeBlock = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_BLOCK_INFO)); |
| if (!GpeBlock) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| /* Initialize the new GPE block */ |
| |
| GpeBlock->Address = Address; |
| GpeBlock->SpaceId = SpaceId; |
| GpeBlock->Node = GpeDevice; |
| GpeBlock->GpeCount = (UINT16) (RegisterCount * ACPI_GPE_REGISTER_WIDTH); |
| GpeBlock->Initialized = FALSE; |
| GpeBlock->RegisterCount = RegisterCount; |
| GpeBlock->BlockBaseNumber = GpeBlockBaseNumber; |
| |
| /* |
| * Create the RegisterInfo and EventInfo sub-structures |
| * Note: disables and clears all GPEs in the block |
| */ |
| Status = AcpiEvCreateGpeInfoBlocks (GpeBlock); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_FREE (GpeBlock); |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Install the new block in the global lists */ |
| |
| Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptNumber); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_FREE (GpeBlock->RegisterInfo); |
| ACPI_FREE (GpeBlock->EventInfo); |
| ACPI_FREE (GpeBlock); |
| return_ACPI_STATUS (Status); |
| } |
| |
| AcpiGbl_AllGpesInitialized = FALSE; |
| |
| /* Find all GPE methods (_Lxx or_Exx) for this block */ |
| |
| WalkInfo.GpeBlock = GpeBlock; |
| WalkInfo.GpeDevice = GpeDevice; |
| WalkInfo.ExecuteByOwnerId = FALSE; |
| |
| Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice, |
| ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, |
| AcpiEvMatchGpeMethod, NULL, &WalkInfo, NULL); |
| |
| /* Return the new block */ |
| |
| if (ReturnGpeBlock) |
| { |
| (*ReturnGpeBlock) = GpeBlock; |
| } |
| |
| ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, |
| " Initialized GPE %02X to %02X [%4.4s] %u regs on interrupt 0x%X%s\n", |
| (UINT32) GpeBlock->BlockBaseNumber, |
| (UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1)), |
| GpeDevice->Name.Ascii, GpeBlock->RegisterCount, InterruptNumber, |
| InterruptNumber == AcpiGbl_FADT.SciInterrupt ? " (SCI)" : "")); |
| |
| /* Update global count of currently available GPEs */ |
| |
| AcpiCurrentGpeCount += GpeBlock->GpeCount; |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiEvInitializeGpeBlock |
| * |
| * PARAMETERS: ACPI_GPE_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initialize and enable a GPE block. Enable GPEs that have |
| * associated methods. |
| * Note: Assumes namespace is locked. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiEvInitializeGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Ignored) |
| { |
| ACPI_STATUS Status; |
| ACPI_GPE_EVENT_INFO *GpeEventInfo; |
| UINT32 GpeEnabledCount; |
| UINT32 GpeIndex; |
| UINT32 i; |
| UINT32 j; |
| |
| |
| ACPI_FUNCTION_TRACE (EvInitializeGpeBlock); |
| |
| |
| /* |
| * Ignore a null GPE block (e.g., if no GPE block 1 exists), and |
| * any GPE blocks that have been initialized already. |
| */ |
| if (!GpeBlock || GpeBlock->Initialized) |
| { |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| /* |
| * Enable all GPEs that have a corresponding method and have the |
| * ACPI_GPE_CAN_WAKE flag unset. Any other GPEs within this block |
| * must be enabled via the acpi_enable_gpe() interface. |
| */ |
| GpeEnabledCount = 0; |
| |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) |
| { |
| /* Get the info block for this particular GPE */ |
| |
| GpeIndex = (i * ACPI_GPE_REGISTER_WIDTH) + j; |
| GpeEventInfo = &GpeBlock->EventInfo[GpeIndex]; |
| |
| /* |
| * Ignore GPEs that have no corresponding _Lxx/_Exx method |
| * and GPEs that are used to wake the system |
| */ |
| if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_NONE) || |
| (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_HANDLER) || |
| (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) == ACPI_GPE_DISPATCH_RAW_HANDLER) || |
| (GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE)) |
| { |
| continue; |
| } |
| |
| Status = AcpiEvAddGpeReference (GpeEventInfo); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Could not enable GPE 0x%02X", |
| GpeIndex + GpeBlock->BlockBaseNumber)); |
| continue; |
| } |
| |
| GpeEnabledCount++; |
| } |
| } |
| |
| if (GpeEnabledCount) |
| { |
| ACPI_INFO ((AE_INFO, |
| "Enabled %u GPEs in block %02X to %02X", GpeEnabledCount, |
| (UINT32) GpeBlock->BlockBaseNumber, |
| (UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1)))); |
| } |
| |
| GpeBlock->Initialized = TRUE; |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| #endif /* !ACPI_REDUCED_HARDWARE */ |
