805 lines
26 KiB
C
805 lines
26 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: evrgnini- ACPI AddressSpace (OpRegion) init
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
|
|
* All rights reserved.
|
|
*
|
|
* 2. License
|
|
*
|
|
* 2.1. This is your license from Intel Corp. under its intellectual property
|
|
* rights. You may have additional license terms from the party that provided
|
|
* you this software, covering your right to use that party's intellectual
|
|
* property rights.
|
|
*
|
|
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
|
|
* copy of the source code appearing in this file ("Covered Code") an
|
|
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
|
|
* base code distributed originally by Intel ("Original Intel Code") to copy,
|
|
* make derivatives, distribute, use and display any portion of the Covered
|
|
* Code in any form, with the right to sublicense such rights; and
|
|
*
|
|
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
|
|
* license (with the right to sublicense), under only those claims of Intel
|
|
* patents that are infringed by the Original Intel Code, to make, use, sell,
|
|
* offer to sell, and import the Covered Code and derivative works thereof
|
|
* solely to the minimum extent necessary to exercise the above copyright
|
|
* license, and in no event shall the patent license extend to any additions
|
|
* to or modifications of the Original Intel Code. No other license or right
|
|
* is granted directly or by implication, estoppel or otherwise;
|
|
*
|
|
* The above copyright and patent license is granted only if the following
|
|
* conditions are met:
|
|
*
|
|
* 3. Conditions
|
|
*
|
|
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification with rights to further distribute source must include
|
|
* the above Copyright Notice, the above License, this list of Conditions,
|
|
* and the following Disclaimer and Export Compliance provision. In addition,
|
|
* Licensee must cause all Covered Code to which Licensee contributes to
|
|
* contain a file documenting the changes Licensee made to create that Covered
|
|
* Code and the date of any change. Licensee must include in that file the
|
|
* documentation of any changes made by any predecessor Licensee. Licensee
|
|
* must include a prominent statement that the modification is derived,
|
|
* directly or indirectly, from Original Intel Code.
|
|
*
|
|
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
|
|
* Redistribution of source code of any substantial portion of the Covered
|
|
* Code or modification without rights to further distribute source must
|
|
* include the following Disclaimer and Export Compliance provision in the
|
|
* documentation and/or other materials provided with distribution. In
|
|
* addition, Licensee may not authorize further sublicense of source of any
|
|
* portion of the Covered Code, and must include terms to the effect that the
|
|
* license from Licensee to its licensee is limited to the intellectual
|
|
* property embodied in the software Licensee provides to its licensee, and
|
|
* not to intellectual property embodied in modifications its licensee may
|
|
* make.
|
|
*
|
|
* 3.3. Redistribution of Executable. Redistribution in executable form of any
|
|
* substantial portion of the Covered Code or modification must reproduce the
|
|
* above Copyright Notice, and the following Disclaimer and Export Compliance
|
|
* provision in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3.4. Intel retains all right, title, and interest in and to the Original
|
|
* Intel Code.
|
|
*
|
|
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
|
|
* Intel shall be used in advertising or otherwise to promote the sale, use or
|
|
* other dealings in products derived from or relating to the Covered Code
|
|
* without prior written authorization from Intel.
|
|
*
|
|
* 4. Disclaimer and Export Compliance
|
|
*
|
|
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
|
|
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
|
|
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
|
|
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
|
|
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE.
|
|
*
|
|
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
|
|
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
|
|
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
|
|
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
|
|
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
|
|
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
|
|
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
|
|
* LIMITED REMEDY.
|
|
*
|
|
* 4.3. Licensee shall not export, either directly or indirectly, any of this
|
|
* software or system incorporating such software without first obtaining any
|
|
* required license or other approval from the U. S. Department of Commerce or
|
|
* any other agency or department of the United States Government. In the
|
|
* event Licensee exports any such software from the United States or
|
|
* re-exports any such software from a foreign destination, Licensee shall
|
|
* ensure that the distribution and export/re-export of the software is in
|
|
* compliance with all laws, regulations, orders, or other restrictions of the
|
|
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
|
|
* any of its subsidiaries will export/re-export any technical data, process,
|
|
* software, or service, directly or indirectly, to any country for which the
|
|
* United States government or any agency thereof requires an export license,
|
|
* other governmental approval, or letter of assurance, without first obtaining
|
|
* such license, approval or letter.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
|
|
#define __EVRGNINI_C__
|
|
|
|
#include "acpi.h"
|
|
#include "accommon.h"
|
|
#include "acevents.h"
|
|
#include "acnamesp.h"
|
|
|
|
#define _COMPONENT ACPI_EVENTS
|
|
ACPI_MODULE_NAME ("evrgnini")
|
|
|
|
/* Local prototypes */
|
|
|
|
static BOOLEAN
|
|
AcpiEvIsPciRootBridge (
|
|
ACPI_NAMESPACE_NODE *Node);
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvSystemMemoryRegionSetup
|
|
*
|
|
* PARAMETERS: Handle - Region we are interested in
|
|
* Function - Start or stop
|
|
* HandlerContext - Address space handler context
|
|
* RegionContext - Region specific context
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Setup a SystemMemory operation region
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvSystemMemoryRegionSetup (
|
|
ACPI_HANDLE Handle,
|
|
UINT32 Function,
|
|
void *HandlerContext,
|
|
void **RegionContext)
|
|
{
|
|
ACPI_OPERAND_OBJECT *RegionDesc = (ACPI_OPERAND_OBJECT *) Handle;
|
|
ACPI_MEM_SPACE_CONTEXT *LocalRegionContext;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvSystemMemoryRegionSetup);
|
|
|
|
|
|
if (Function == ACPI_REGION_DEACTIVATE)
|
|
{
|
|
if (*RegionContext)
|
|
{
|
|
LocalRegionContext = (ACPI_MEM_SPACE_CONTEXT *) *RegionContext;
|
|
|
|
/* Delete a cached mapping if present */
|
|
|
|
if (LocalRegionContext->MappedLength)
|
|
{
|
|
AcpiOsUnmapMemory (LocalRegionContext->MappedLogicalAddress,
|
|
LocalRegionContext->MappedLength);
|
|
}
|
|
ACPI_FREE (LocalRegionContext);
|
|
*RegionContext = NULL;
|
|
}
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Create a new context */
|
|
|
|
LocalRegionContext = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_MEM_SPACE_CONTEXT));
|
|
if (!(LocalRegionContext))
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Save the region length and address for use in the handler */
|
|
|
|
LocalRegionContext->Length = RegionDesc->Region.Length;
|
|
LocalRegionContext->Address = RegionDesc->Region.Address;
|
|
|
|
*RegionContext = LocalRegionContext;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvIoSpaceRegionSetup
|
|
*
|
|
* PARAMETERS: Handle - Region we are interested in
|
|
* Function - Start or stop
|
|
* HandlerContext - Address space handler context
|
|
* RegionContext - Region specific context
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Setup a IO operation region
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvIoSpaceRegionSetup (
|
|
ACPI_HANDLE Handle,
|
|
UINT32 Function,
|
|
void *HandlerContext,
|
|
void **RegionContext)
|
|
{
|
|
ACPI_FUNCTION_TRACE (EvIoSpaceRegionSetup);
|
|
|
|
|
|
if (Function == ACPI_REGION_DEACTIVATE)
|
|
{
|
|
*RegionContext = NULL;
|
|
}
|
|
else
|
|
{
|
|
*RegionContext = HandlerContext;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvPciConfigRegionSetup
|
|
*
|
|
* PARAMETERS: Handle - Region we are interested in
|
|
* Function - Start or stop
|
|
* HandlerContext - Address space handler context
|
|
* RegionContext - Region specific context
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Setup a PCI_Config operation region
|
|
*
|
|
* MUTEX: Assumes namespace is not locked
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvPciConfigRegionSetup (
|
|
ACPI_HANDLE Handle,
|
|
UINT32 Function,
|
|
void *HandlerContext,
|
|
void **RegionContext)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
UINT64 PciValue;
|
|
ACPI_PCI_ID *PciId = *RegionContext;
|
|
ACPI_OPERAND_OBJECT *HandlerObj;
|
|
ACPI_NAMESPACE_NODE *ParentNode;
|
|
ACPI_NAMESPACE_NODE *PciRootNode;
|
|
ACPI_NAMESPACE_NODE *PciDeviceNode;
|
|
ACPI_OPERAND_OBJECT *RegionObj = (ACPI_OPERAND_OBJECT *) Handle;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvPciConfigRegionSetup);
|
|
|
|
|
|
HandlerObj = RegionObj->Region.Handler;
|
|
if (!HandlerObj)
|
|
{
|
|
/*
|
|
* No installed handler. This shouldn't happen because the dispatch
|
|
* routine checks before we get here, but we check again just in case.
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
|
|
"Attempting to init a region %p, with no handler\n", RegionObj));
|
|
return_ACPI_STATUS (AE_NOT_EXIST);
|
|
}
|
|
|
|
*RegionContext = NULL;
|
|
if (Function == ACPI_REGION_DEACTIVATE)
|
|
{
|
|
if (PciId)
|
|
{
|
|
ACPI_FREE (PciId);
|
|
}
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ParentNode = RegionObj->Region.Node->Parent;
|
|
|
|
/*
|
|
* Get the _SEG and _BBN values from the device upon which the handler
|
|
* is installed.
|
|
*
|
|
* We need to get the _SEG and _BBN objects relative to the PCI BUS device.
|
|
* This is the device the handler has been registered to handle.
|
|
*/
|
|
|
|
/*
|
|
* If the AddressSpace.Node is still pointing to the root, we need
|
|
* to scan upward for a PCI Root bridge and re-associate the OpRegion
|
|
* handlers with that device.
|
|
*/
|
|
if (HandlerObj->AddressSpace.Node == AcpiGbl_RootNode)
|
|
{
|
|
/* Start search from the parent object */
|
|
|
|
PciRootNode = ParentNode;
|
|
while (PciRootNode != AcpiGbl_RootNode)
|
|
{
|
|
/* Get the _HID/_CID in order to detect a RootBridge */
|
|
|
|
if (AcpiEvIsPciRootBridge (PciRootNode))
|
|
{
|
|
/* Install a handler for this PCI root bridge */
|
|
|
|
Status = AcpiInstallAddressSpaceHandler (
|
|
(ACPI_HANDLE) PciRootNode,
|
|
ACPI_ADR_SPACE_PCI_CONFIG,
|
|
ACPI_DEFAULT_HANDLER, NULL, NULL);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
if (Status == AE_SAME_HANDLER)
|
|
{
|
|
/*
|
|
* It is OK if the handler is already installed on the
|
|
* root bridge. Still need to return a context object
|
|
* for the new PCI_Config operation region, however.
|
|
*/
|
|
Status = AE_OK;
|
|
}
|
|
else
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Could not install PciConfig handler "
|
|
"for Root Bridge %4.4s",
|
|
AcpiUtGetNodeName (PciRootNode)));
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
PciRootNode = PciRootNode->Parent;
|
|
}
|
|
|
|
/* PCI root bridge not found, use namespace root node */
|
|
}
|
|
else
|
|
{
|
|
PciRootNode = HandlerObj->AddressSpace.Node;
|
|
}
|
|
|
|
/*
|
|
* If this region is now initialized, we are done.
|
|
* (InstallAddressSpaceHandler could have initialized it)
|
|
*/
|
|
if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Region is still not initialized. Create a new context */
|
|
|
|
PciId = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PCI_ID));
|
|
if (!PciId)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/*
|
|
* For PCI_Config space access, we need the segment, bus, device and
|
|
* function numbers. Acquire them here.
|
|
*
|
|
* Find the parent device object. (This allows the operation region to be
|
|
* within a subscope under the device, such as a control method.)
|
|
*/
|
|
PciDeviceNode = RegionObj->Region.Node;
|
|
while (PciDeviceNode && (PciDeviceNode->Type != ACPI_TYPE_DEVICE))
|
|
{
|
|
PciDeviceNode = PciDeviceNode->Parent;
|
|
}
|
|
|
|
if (!PciDeviceNode)
|
|
{
|
|
ACPI_FREE (PciId);
|
|
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
|
|
}
|
|
|
|
/*
|
|
* Get the PCI device and function numbers from the _ADR object
|
|
* contained in the parent's scope.
|
|
*/
|
|
Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
|
|
PciDeviceNode, &PciValue);
|
|
|
|
/*
|
|
* The default is zero, and since the allocation above zeroed the data,
|
|
* just do nothing on failure.
|
|
*/
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
PciId->Device = ACPI_HIWORD (ACPI_LODWORD (PciValue));
|
|
PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
|
|
}
|
|
|
|
/* The PCI segment number comes from the _SEG method */
|
|
|
|
Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG,
|
|
PciRootNode, &PciValue);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
PciId->Segment = ACPI_LOWORD (PciValue);
|
|
}
|
|
|
|
/* The PCI bus number comes from the _BBN method */
|
|
|
|
Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN,
|
|
PciRootNode, &PciValue);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
PciId->Bus = ACPI_LOWORD (PciValue);
|
|
}
|
|
|
|
/* Complete/update the PCI ID for this device */
|
|
|
|
Status = AcpiHwDerivePciId (PciId, PciRootNode, RegionObj->Region.Node);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_FREE (PciId);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
*RegionContext = PciId;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvIsPciRootBridge
|
|
*
|
|
* PARAMETERS: Node - Device node being examined
|
|
*
|
|
* RETURN: TRUE if device is a PCI/PCI-Express Root Bridge
|
|
*
|
|
* DESCRIPTION: Determine if the input device represents a PCI Root Bridge by
|
|
* examining the _HID and _CID for the device.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static BOOLEAN
|
|
AcpiEvIsPciRootBridge (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_DEVICE_ID *Hid;
|
|
ACPI_DEVICE_ID_LIST *Cid;
|
|
UINT32 i;
|
|
BOOLEAN Match;
|
|
|
|
|
|
/* Get the _HID and check for a PCI Root Bridge */
|
|
|
|
Status = AcpiUtExecute_HID (Node, &Hid);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (FALSE);
|
|
}
|
|
|
|
Match = AcpiUtIsPciRootBridge (Hid->String);
|
|
ACPI_FREE (Hid);
|
|
|
|
if (Match)
|
|
{
|
|
return (TRUE);
|
|
}
|
|
|
|
/* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
|
|
|
|
Status = AcpiUtExecute_CID (Node, &Cid);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return (FALSE);
|
|
}
|
|
|
|
/* Check all _CIDs in the returned list */
|
|
|
|
for (i = 0; i < Cid->Count; i++)
|
|
{
|
|
if (AcpiUtIsPciRootBridge (Cid->Ids[i].String))
|
|
{
|
|
ACPI_FREE (Cid);
|
|
return (TRUE);
|
|
}
|
|
}
|
|
|
|
ACPI_FREE (Cid);
|
|
return (FALSE);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvPciBarRegionSetup
|
|
*
|
|
* PARAMETERS: Handle - Region we are interested in
|
|
* Function - Start or stop
|
|
* HandlerContext - Address space handler context
|
|
* RegionContext - Region specific context
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Setup a PciBAR operation region
|
|
*
|
|
* MUTEX: Assumes namespace is not locked
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvPciBarRegionSetup (
|
|
ACPI_HANDLE Handle,
|
|
UINT32 Function,
|
|
void *HandlerContext,
|
|
void **RegionContext)
|
|
{
|
|
ACPI_FUNCTION_TRACE (EvPciBarRegionSetup);
|
|
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvCmosRegionSetup
|
|
*
|
|
* PARAMETERS: Handle - Region we are interested in
|
|
* Function - Start or stop
|
|
* HandlerContext - Address space handler context
|
|
* RegionContext - Region specific context
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Setup a CMOS operation region
|
|
*
|
|
* MUTEX: Assumes namespace is not locked
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvCmosRegionSetup (
|
|
ACPI_HANDLE Handle,
|
|
UINT32 Function,
|
|
void *HandlerContext,
|
|
void **RegionContext)
|
|
{
|
|
ACPI_FUNCTION_TRACE (EvCmosRegionSetup);
|
|
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvDefaultRegionSetup
|
|
*
|
|
* PARAMETERS: Handle - Region we are interested in
|
|
* Function - Start or stop
|
|
* HandlerContext - Address space handler context
|
|
* RegionContext - Region specific context
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Default region initialization
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvDefaultRegionSetup (
|
|
ACPI_HANDLE Handle,
|
|
UINT32 Function,
|
|
void *HandlerContext,
|
|
void **RegionContext)
|
|
{
|
|
ACPI_FUNCTION_TRACE (EvDefaultRegionSetup);
|
|
|
|
|
|
if (Function == ACPI_REGION_DEACTIVATE)
|
|
{
|
|
*RegionContext = NULL;
|
|
}
|
|
else
|
|
{
|
|
*RegionContext = HandlerContext;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInitializeRegion
|
|
*
|
|
* PARAMETERS: RegionObj - Region we are initializing
|
|
* AcpiNsLocked - Is namespace locked?
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initializes the region, finds any _REG methods and saves them
|
|
* for execution at a later time
|
|
*
|
|
* Get the appropriate address space handler for a newly
|
|
* created region.
|
|
*
|
|
* This also performs address space specific initialization. For
|
|
* example, PCI regions must have an _ADR object that contains
|
|
* a PCI address in the scope of the definition. This address is
|
|
* required to perform an access to PCI config space.
|
|
*
|
|
* MUTEX: Interpreter should be unlocked, because we may run the _REG
|
|
* method for this region.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvInitializeRegion (
|
|
ACPI_OPERAND_OBJECT *RegionObj,
|
|
BOOLEAN AcpiNsLocked)
|
|
{
|
|
ACPI_OPERAND_OBJECT *HandlerObj;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_ADR_SPACE_TYPE SpaceId;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_STATUS Status;
|
|
ACPI_NAMESPACE_NODE *MethodNode;
|
|
ACPI_NAME *RegNamePtr = (ACPI_NAME *) METHOD_NAME__REG;
|
|
ACPI_OPERAND_OBJECT *RegionObj2;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_U32 (EvInitializeRegion, AcpiNsLocked);
|
|
|
|
|
|
if (!RegionObj)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
RegionObj2 = AcpiNsGetSecondaryObject (RegionObj);
|
|
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);
|
|
}
|
|
|