732 lines
22 KiB
C
732 lines
22 KiB
C
/******************************************************************************
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*
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* Module Name: evrgnini- ACPI AddressSpace (OpRegion) init
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2013, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#define __EVRGNINI_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acevents.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_EVENTS
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ACPI_MODULE_NAME ("evrgnini")
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/* Local prototypes */
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static BOOLEAN
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AcpiEvIsPciRootBridge (
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ACPI_NAMESPACE_NODE *Node);
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvSystemMemoryRegionSetup
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*
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* PARAMETERS: Handle - Region we are interested in
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* Function - Start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Setup a SystemMemory operation region
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvSystemMemoryRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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ACPI_OPERAND_OBJECT *RegionDesc = (ACPI_OPERAND_OBJECT *) Handle;
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ACPI_MEM_SPACE_CONTEXT *LocalRegionContext;
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ACPI_FUNCTION_TRACE (EvSystemMemoryRegionSetup);
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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if (*RegionContext)
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{
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LocalRegionContext = (ACPI_MEM_SPACE_CONTEXT *) *RegionContext;
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/* Delete a cached mapping if present */
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if (LocalRegionContext->MappedLength)
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{
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AcpiOsUnmapMemory (LocalRegionContext->MappedLogicalAddress,
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LocalRegionContext->MappedLength);
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}
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ACPI_FREE (LocalRegionContext);
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*RegionContext = NULL;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/* Create a new context */
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LocalRegionContext = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_MEM_SPACE_CONTEXT));
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if (!(LocalRegionContext))
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Save the region length and address for use in the handler */
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LocalRegionContext->Length = RegionDesc->Region.Length;
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LocalRegionContext->Address = RegionDesc->Region.Address;
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*RegionContext = LocalRegionContext;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvIoSpaceRegionSetup
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*
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* PARAMETERS: Handle - Region we are interested in
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* Function - Start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Setup a IO operation region
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvIoSpaceRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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ACPI_FUNCTION_TRACE (EvIoSpaceRegionSetup);
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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*RegionContext = NULL;
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}
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else
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{
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*RegionContext = HandlerContext;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvPciConfigRegionSetup
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*
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* PARAMETERS: Handle - Region we are interested in
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* Function - Start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Setup a PCI_Config operation region
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*
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* MUTEX: Assumes namespace is not locked
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvPciConfigRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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ACPI_STATUS Status = AE_OK;
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UINT64 PciValue;
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ACPI_PCI_ID *PciId = *RegionContext;
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_NAMESPACE_NODE *ParentNode;
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ACPI_NAMESPACE_NODE *PciRootNode;
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ACPI_NAMESPACE_NODE *PciDeviceNode;
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ACPI_OPERAND_OBJECT *RegionObj = (ACPI_OPERAND_OBJECT *) Handle;
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ACPI_FUNCTION_TRACE (EvPciConfigRegionSetup);
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HandlerObj = RegionObj->Region.Handler;
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if (!HandlerObj)
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{
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/*
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* No installed handler. This shouldn't happen because the dispatch
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* routine checks before we get here, but we check again just in case.
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
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"Attempting to init a region %p, with no handler\n", RegionObj));
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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*RegionContext = NULL;
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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if (PciId)
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{
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ACPI_FREE (PciId);
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}
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return_ACPI_STATUS (Status);
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}
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ParentNode = RegionObj->Region.Node->Parent;
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/*
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* Get the _SEG and _BBN values from the device upon which the handler
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* is installed.
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*
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* We need to get the _SEG and _BBN objects relative to the PCI BUS device.
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* This is the device the handler has been registered to handle.
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*/
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/*
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* If the AddressSpace.Node is still pointing to the root, we need
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* to scan upward for a PCI Root bridge and re-associate the OpRegion
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* handlers with that device.
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*/
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if (HandlerObj->AddressSpace.Node == AcpiGbl_RootNode)
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{
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/* Start search from the parent object */
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PciRootNode = ParentNode;
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while (PciRootNode != AcpiGbl_RootNode)
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{
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/* Get the _HID/_CID in order to detect a RootBridge */
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if (AcpiEvIsPciRootBridge (PciRootNode))
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{
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/* Install a handler for this PCI root bridge */
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Status = AcpiInstallAddressSpaceHandler (
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(ACPI_HANDLE) PciRootNode,
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ACPI_ADR_SPACE_PCI_CONFIG,
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ACPI_DEFAULT_HANDLER, NULL, NULL);
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if (ACPI_FAILURE (Status))
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{
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if (Status == AE_SAME_HANDLER)
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{
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/*
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* It is OK if the handler is already installed on the
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* root bridge. Still need to return a context object
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* for the new PCI_Config operation region, however.
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*/
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Status = AE_OK;
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}
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else
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"Could not install PciConfig handler "
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"for Root Bridge %4.4s",
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AcpiUtGetNodeName (PciRootNode)));
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}
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}
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break;
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}
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PciRootNode = PciRootNode->Parent;
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}
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/* PCI root bridge not found, use namespace root node */
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}
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else
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{
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PciRootNode = HandlerObj->AddressSpace.Node;
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}
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/*
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* If this region is now initialized, we are done.
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* (InstallAddressSpaceHandler could have initialized it)
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*/
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if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
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{
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return_ACPI_STATUS (AE_OK);
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}
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/* Region is still not initialized. Create a new context */
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PciId = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PCI_ID));
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if (!PciId)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/*
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* For PCI_Config space access, we need the segment, bus, device and
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* function numbers. Acquire them here.
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*
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* Find the parent device object. (This allows the operation region to be
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* within a subscope under the device, such as a control method.)
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*/
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PciDeviceNode = RegionObj->Region.Node;
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while (PciDeviceNode && (PciDeviceNode->Type != ACPI_TYPE_DEVICE))
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{
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PciDeviceNode = PciDeviceNode->Parent;
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}
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if (!PciDeviceNode)
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{
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ACPI_FREE (PciId);
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/*
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* Get the PCI device and function numbers from the _ADR object
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* contained in the parent's scope.
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*/
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
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PciDeviceNode, &PciValue);
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/*
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* The default is zero, and since the allocation above zeroed the data,
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* just do nothing on failure.
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*/
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if (ACPI_SUCCESS (Status))
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{
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PciId->Device = ACPI_HIWORD (ACPI_LODWORD (PciValue));
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PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
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}
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/* The PCI segment number comes from the _SEG method */
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG,
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PciRootNode, &PciValue);
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if (ACPI_SUCCESS (Status))
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{
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PciId->Segment = ACPI_LOWORD (PciValue);
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}
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/* The PCI bus number comes from the _BBN method */
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Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN,
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PciRootNode, &PciValue);
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if (ACPI_SUCCESS (Status))
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{
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PciId->Bus = ACPI_LOWORD (PciValue);
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}
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/* Complete/update the PCI ID for this device */
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Status = AcpiHwDerivePciId (PciId, PciRootNode, RegionObj->Region.Node);
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if (ACPI_FAILURE (Status))
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{
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ACPI_FREE (PciId);
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return_ACPI_STATUS (Status);
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}
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*RegionContext = PciId;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvIsPciRootBridge
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*
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* PARAMETERS: Node - Device node being examined
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*
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* RETURN: TRUE if device is a PCI/PCI-Express Root Bridge
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*
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* DESCRIPTION: Determine if the input device represents a PCI Root Bridge by
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* examining the _HID and _CID for the device.
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*
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******************************************************************************/
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static BOOLEAN
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AcpiEvIsPciRootBridge (
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ACPI_NAMESPACE_NODE *Node)
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{
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ACPI_STATUS Status;
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ACPI_PNP_DEVICE_ID *Hid;
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ACPI_PNP_DEVICE_ID_LIST *Cid;
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UINT32 i;
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BOOLEAN Match;
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/* Get the _HID and check for a PCI Root Bridge */
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Status = AcpiUtExecute_HID (Node, &Hid);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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Match = AcpiUtIsPciRootBridge (Hid->String);
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ACPI_FREE (Hid);
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if (Match)
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{
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return (TRUE);
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}
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/* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
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Status = AcpiUtExecute_CID (Node, &Cid);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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/* Check all _CIDs in the returned list */
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for (i = 0; i < Cid->Count; i++)
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{
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if (AcpiUtIsPciRootBridge (Cid->Ids[i].String))
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{
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ACPI_FREE (Cid);
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return (TRUE);
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}
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}
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ACPI_FREE (Cid);
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvPciBarRegionSetup
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*
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* PARAMETERS: Handle - Region we are interested in
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* Function - Start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Setup a PciBAR operation region
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*
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* MUTEX: Assumes namespace is not locked
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvPciBarRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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ACPI_FUNCTION_TRACE (EvPciBarRegionSetup);
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvCmosRegionSetup
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*
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* PARAMETERS: Handle - Region we are interested in
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* Function - Start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Setup a CMOS operation region
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*
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* MUTEX: Assumes namespace is not locked
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvCmosRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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ACPI_FUNCTION_TRACE (EvCmosRegionSetup);
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvDefaultRegionSetup
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*
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* PARAMETERS: Handle - Region we are interested in
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* Function - Start or stop
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* HandlerContext - Address space handler context
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* RegionContext - Region specific context
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*
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* RETURN: Status
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*
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* DESCRIPTION: Default region initialization
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvDefaultRegionSetup (
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ACPI_HANDLE Handle,
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UINT32 Function,
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void *HandlerContext,
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void **RegionContext)
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{
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ACPI_FUNCTION_TRACE (EvDefaultRegionSetup);
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if (Function == ACPI_REGION_DEACTIVATE)
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{
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*RegionContext = NULL;
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}
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else
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{
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*RegionContext = HandlerContext;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiEvInitializeRegion
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*
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* PARAMETERS: RegionObj - Region we are initializing
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* AcpiNsLocked - Is namespace locked?
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initializes the region, finds any _REG methods and saves them
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* for execution at a later time
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*
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* Get the appropriate address space handler for a newly
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* created region.
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*
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* This also performs address space specific initialization. For
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* example, PCI regions must have an _ADR object that contains
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* a PCI address in the scope of the definition. This address is
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* required to perform an access to PCI config space.
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*
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* MUTEX: Interpreter should be unlocked, because we may run the _REG
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* method for this region.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEvInitializeRegion (
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ACPI_OPERAND_OBJECT *RegionObj,
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BOOLEAN AcpiNsLocked)
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{
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ACPI_OPERAND_OBJECT *HandlerObj;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_ADR_SPACE_TYPE SpaceId;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *MethodNode;
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ACPI_NAME *RegNamePtr = (ACPI_NAME *) METHOD_NAME__REG;
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ACPI_OPERAND_OBJECT *RegionObj2;
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ACPI_FUNCTION_TRACE_U32 (EvInitializeRegion, AcpiNsLocked);
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if (!RegionObj)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED)
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{
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return_ACPI_STATUS (AE_OK);
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}
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RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
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if (!RegionObj2)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
Node = RegionObj->Region.Node->Parent;
|
|
SpaceId = RegionObj->Region.SpaceId;
|
|
|
|
/* Setup defaults */
|
|
|
|
RegionObj->Region.Handler = NULL;
|
|
RegionObj2->Extra.Method_REG = NULL;
|
|
RegionObj->Common.Flags &= ~(AOPOBJ_SETUP_COMPLETE);
|
|
RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED;
|
|
|
|
/* Find any "_REG" method associated with this region definition */
|
|
|
|
Status = AcpiNsSearchOneScope (
|
|
*RegNamePtr, Node, ACPI_TYPE_METHOD, &MethodNode);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/*
|
|
* The _REG method is optional and there can be only one per region
|
|
* definition. This will be executed when the handler is attached
|
|
* or removed
|
|
*/
|
|
RegionObj2->Extra.Method_REG = MethodNode;
|
|
}
|
|
|
|
/*
|
|
* The following loop depends upon the root Node having no parent
|
|
* ie: AcpiGbl_RootNode->ParentEntry being set to NULL
|
|
*/
|
|
while (Node)
|
|
{
|
|
/* Check to see if a handler exists */
|
|
|
|
HandlerObj = NULL;
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (ObjDesc)
|
|
{
|
|
/* Can only be a handler if the object exists */
|
|
|
|
switch (Node->Type)
|
|
{
|
|
case ACPI_TYPE_DEVICE:
|
|
|
|
HandlerObj = ObjDesc->Device.Handler;
|
|
break;
|
|
|
|
case ACPI_TYPE_PROCESSOR:
|
|
|
|
HandlerObj = ObjDesc->Processor.Handler;
|
|
break;
|
|
|
|
case ACPI_TYPE_THERMAL:
|
|
|
|
HandlerObj = ObjDesc->ThermalZone.Handler;
|
|
break;
|
|
|
|
case ACPI_TYPE_METHOD:
|
|
/*
|
|
* If we are executing module level code, the original
|
|
* Node's object was replaced by this Method object and we
|
|
* saved the handler in the method object.
|
|
*
|
|
* See AcpiNsExecModuleCode
|
|
*/
|
|
if (ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL)
|
|
{
|
|
HandlerObj = ObjDesc->Method.Dispatch.Handler;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* Ignore other objects */
|
|
break;
|
|
}
|
|
|
|
while (HandlerObj)
|
|
{
|
|
/* Is this handler of the correct type? */
|
|
|
|
if (HandlerObj->AddressSpace.SpaceId == SpaceId)
|
|
{
|
|
/* Found correct handler */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Found handler %p for region %p in obj %p\n",
|
|
HandlerObj, RegionObj, ObjDesc));
|
|
|
|
Status = AcpiEvAttachRegion (HandlerObj, RegionObj,
|
|
AcpiNsLocked);
|
|
|
|
/*
|
|
* Tell all users that this region is usable by
|
|
* running the _REG method
|
|
*/
|
|
if (AcpiNsLocked)
|
|
{
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
Status = AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_CONNECT);
|
|
|
|
if (AcpiNsLocked)
|
|
{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Try next handler in the list */
|
|
|
|
HandlerObj = HandlerObj->AddressSpace.Next;
|
|
}
|
|
}
|
|
|
|
/* This node does not have the handler we need; Pop up one level */
|
|
|
|
Node = Node->Parent;
|
|
}
|
|
|
|
/* If we get here, there is no handler for this region */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"No handler for RegionType %s(%X) (RegionObj %p)\n",
|
|
AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj));
|
|
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|