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Initial support for DataTable Regions

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date	2001.12.04.18.00.00;	author rmoore1;	state Exp;
This commit is contained in:
aystarik 2005-06-29 17:44:50 +00:00
parent dc3e4828d6
commit 99856e5ace
1 changed files with 63 additions and 1 deletions
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64
source/components/executer/exregion.c
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@ -2,7 +2,7 @@
/******************************************************************************
*
* Module Name: exregion - ACPI default OpRegion (address space) handlers
* $Revision: 1.64 $
* $Revision: 1.65 $
*
*****************************************************************************/
@ -513,3 +513,65 @@ AcpiExPciBarSpaceHandler (
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExDataTableSpaceHandler
*
* PARAMETERS: Function - Read or Write operation
* Address - Where in the space to read or write
* BitWidth - Field width in bits (8, 16, or 32)
* Value - Pointer to in or out value
* HandlerContext - Pointer to Handler's context
* RegionContext - Pointer to context specific to the
* accessed region
*
* RETURN: Status
*
* DESCRIPTION: Handler for the Data Table address space (Op Region)
*
******************************************************************************/
ACPI_STATUS
AcpiExDataTableSpaceHandler (
UINT32 Function,
ACPI_PHYSICAL_ADDRESS Address,
UINT32 BitWidth,
ACPI_INTEGER *Value,
void *HandlerContext,
void *RegionContext)
{
ACPI_STATUS Status = AE_OK;
UINT32 ByteWidth = DIV_8 (BitWidth);
UINT32 i;
char *LogicalAddrPtr;
FUNCTION_TRACE ("ExDataTableSpaceHandler");
LogicalAddrPtr = (char *) (NATIVE_UINT) Address;
/* Perform the memory read or write */
switch (Function)
{
case ACPI_READ:
for (i = 0; i < ByteWidth; i++)
{
((char *) Value) [i] = LogicalAddrPtr[i];
}
break;
case ACPI_WRITE:
return_ACPI_STATUS (AE_SUPPORT);
break;
}
return_ACPI_STATUS (Status);
}