ACPI_STATUS
AcpiInstallAddressSpaceHandler (
ACPI_HANDLE Device,
ACPI_ADR_SPACE_TYPE SpaceId,
ACPI_ADR_SPACE_HANDLER Handler,
ACPI_ADR_SPACE_SETUP Setup,
void *Context)
{
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (AcpiInstallAddressSpaceHandler);
/* Parameter validation */
if (!Device)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Convert and validate the device handle */
Node = AcpiNsValidateHandle (Device);
if (!Node)
{
Status = AE_BAD_PARAMETER;
goto UnlockAndExit;
}
/* Install the handler for all Regions for this Space ID */
Status = AcpiEvInstallSpaceHandler (
Node, SpaceId, Handler, Setup, Context);
if (ACPI_FAILURE (Status))
{
goto UnlockAndExit;
}
/* Run all _REG methods for this address space */
AcpiEvExecuteRegMethods (Node, SpaceId, ACPI_REG_CONNECT);
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEvInitializeOpRegions (
void)
{
ACPI_STATUS Status;
UINT32 i;
ACPI_FUNCTION_TRACE (EvInitializeOpRegions);
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Run the _REG methods for OpRegions in each default address space */
for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++)
{
/*
* Make sure the installed handler is the DEFAULT handler. If not the
* default, the _REG methods will have already been run (when the
* handler was installed)
*/
if (AcpiEvHasDefaultHandler (AcpiGbl_RootNode,
AcpiGbl_DefaultAddressSpaces[i]))
{
Status = AcpiEvExecuteRegMethods (AcpiGbl_RootNode,
AcpiGbl_DefaultAddressSpaces[i]);
}
}
AcpiGbl_RegMethodsExecuted = TRUE;
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiInstallAddressSpaceHandler (
ACPI_HANDLE Device,
ACPI_ADR_SPACE_TYPE SpaceId,
ACPI_ADR_SPACE_HANDLER Handler,
ACPI_ADR_SPACE_SETUP Setup,
void *Context)
{
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (AcpiInstallAddressSpaceHandler);
/* Parameter validation */
if (!Device)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Convert and validate the device handle */
Node = AcpiNsValidateHandle (Device);
if (!Node)
{
Status = AE_BAD_PARAMETER;
goto UnlockAndExit;
}
/* Install the handler for all Regions for this Space ID */
Status = AcpiEvInstallSpaceHandler (Node, SpaceId, Handler, Setup, Context);
if (ACPI_FAILURE (Status))
{
goto UnlockAndExit;
}
/*
* For the default SpaceIDs, (the IDs for which there are default region handlers
* installed) Only execute the _REG methods if the global initialization _REG
* methods have already been run (via AcpiInitializeObjects). In other words,
* we will defer the execution of the _REG methods for these SpaceIDs until
* execution of AcpiInitializeObjects. This is done because we need the handlers
* for the default spaces (mem/io/pci/table) to be installed before we can run
* any control methods (or _REG methods). There is known BIOS code that depends
* on this.
*
* For all other SpaceIDs, we can safely execute the _REG methods immediately.
* This means that for IDs like EmbeddedController, this function should be called
* only after AcpiEnableSubsystem has been called.
*/
switch (SpaceId)
{
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
case ACPI_ADR_SPACE_SYSTEM_IO:
case ACPI_ADR_SPACE_PCI_CONFIG:
case ACPI_ADR_SPACE_DATA_TABLE:
if (!AcpiGbl_RegMethodsExecuted)
{
/* We will defer execution of the _REG methods for this space */
goto UnlockAndExit;
}
break;
default:
break;
}
/* Run all _REG methods for this address space */
Status = AcpiEvExecuteRegMethods (Node, SpaceId);
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
return_ACPI_STATUS (Status);
}