ACPI_STATUS
AcpiGetSystemInfo (
ACPI_BUFFER *OutBuffer)
{
ACPI_SYSTEM_INFO *InfoPtr;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (AcpiGetSystemInfo);
/* Parameter validation */
Status = AcpiUtValidateBuffer (OutBuffer);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Validate/Allocate/Clear caller buffer */
Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO));
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Populate the return buffer
*/
InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;
InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;
/* System flags (ACPI capabilities) */
InfoPtr->Flags = ACPI_SYS_MODE_ACPI;
/* Timer resolution - 24 or 32 bits */
if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
{
InfoPtr->TimerResolution = 24;
}
else
{
InfoPtr->TimerResolution = 32;
}
/* Clear the reserved fields */
InfoPtr->Reserved1 = 0;
InfoPtr->Reserved2 = 0;
/* Current debug levels */
InfoPtr->DebugLayer = AcpiDbgLayer;
InfoPtr->DebugLevel = AcpiDbgLevel;
return_ACPI_STATUS (AE_OK);
}
static ACPI_STATUS
AcpiRsValidateParameters (
ACPI_HANDLE DeviceHandle,
ACPI_BUFFER *Buffer,
ACPI_NAMESPACE_NODE **ReturnNode)
{
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
ACPI_FUNCTION_TRACE (RsValidateParameters);
/*
* Must have a valid handle to an ACPI device
*/
if (!DeviceHandle)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Node = AcpiNsValidateHandle (DeviceHandle);
if (!Node)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
if (Node->Type != ACPI_TYPE_DEVICE)
{
return_ACPI_STATUS (AE_TYPE);
}
/*
* Validate the user buffer object
*
* if there is a non-zero buffer length we also need a valid pointer in
* the buffer. If it's a zero buffer length, we'll be returning the
* needed buffer size (later), so keep going.
*/
Status = AcpiUtValidateBuffer (Buffer);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
*ReturnNode = Node;
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiGetObjectInfo (
ACPI_HANDLE Handle,
ACPI_BUFFER *Buffer)
{
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
ACPI_DEVICE_INFO *Info;
ACPI_DEVICE_INFO *ReturnInfo;
ACPI_COMPATIBLE_ID_LIST *CidList = NULL;
ACPI_SIZE Size;
/* Parameter validation */
if (!Handle || !Buffer)
{
return (AE_BAD_PARAMETER);
}
Status = AcpiUtValidateBuffer (Buffer);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_INFO));
if (!Info)
{
return (AE_NO_MEMORY);
}
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Node = AcpiNsMapHandleToNode (Handle);
if (!Node)
{
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
goto Cleanup;
}
/* Init return structure */
Size = sizeof (ACPI_DEVICE_INFO);
Info->Type = Node->Type;
Info->Name = Node->Name.Integer;
Info->Valid = 0;
Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* If not a device, we are all done */
if (Info->Type == ACPI_TYPE_DEVICE)
{
/*
* Get extra info for ACPI Devices objects only:
* Run the Device _HID, _UID, _CID, _STA, _ADR and _SxD methods.
*
* Note: none of these methods are required, so they may or may
* not be present for this device. The Info->Valid bitfield is used
* to indicate which methods were found and ran successfully.
*/
/* Execute the Device._HID method */
Status = AcpiUtExecute_HID (Node, &Info->HardwareId);
if (ACPI_SUCCESS (Status))
{
Info->Valid |= ACPI_VALID_HID;
}
/* Execute the Device._UID method */
Status = AcpiUtExecute_UID (Node, &Info->UniqueId);
if (ACPI_SUCCESS (Status))
{
Info->Valid |= ACPI_VALID_UID;
}
/* Execute the Device._CID method */
Status = AcpiUtExecute_CID (Node, &CidList);
if (ACPI_SUCCESS (Status))
{
Size += CidList->Size;
Info->Valid |= ACPI_VALID_CID;
}
/* Execute the Device._STA method */
Status = AcpiUtExecute_STA (Node, &Info->CurrentStatus);
if (ACPI_SUCCESS (Status))
{
Info->Valid |= ACPI_VALID_STA;
}
/* Execute the Device._ADR method */
Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node,
&Info->Address);
if (ACPI_SUCCESS (Status))
{
Info->Valid |= ACPI_VALID_ADR;
}
/* Execute the Device._SxD methods */
Status = AcpiUtExecute_Sxds (Node, Info->HighestDstates);
if (ACPI_SUCCESS (Status))
{
Info->Valid |= ACPI_VALID_SXDS;
}
}
/* Validate/Allocate/Clear caller buffer */
Status = AcpiUtInitializeBuffer (Buffer, Size);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Populate the return buffer */
ReturnInfo = Buffer->Pointer;
ACPI_MEMCPY (ReturnInfo, Info, sizeof (ACPI_DEVICE_INFO));
if (CidList)
{
ACPI_MEMCPY (&ReturnInfo->CompatibilityId, CidList, CidList->Size);
}
Cleanup:
ACPI_FREE (Info);
if (CidList)
{
ACPI_FREE (CidList);
}
return (Status);
}
ACPI_STATUS
AcpiGetName (
ACPI_HANDLE Handle,
UINT32 NameType,
ACPI_BUFFER *Buffer)
{
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
/* Parameter validation */
if (NameType > ACPI_NAME_TYPE_MAX)
{
return (AE_BAD_PARAMETER);
}
Status = AcpiUtValidateBuffer (Buffer);
if (ACPI_FAILURE (Status))
{
return (Status);
}
if (NameType == ACPI_FULL_PATHNAME)
{
/* Get the full pathname (From the namespace root) */
Status = AcpiNsHandleToPathname (Handle, Buffer);
return (Status);
}
/*
* Wants the single segment ACPI name.
* Validate handle and convert to a namespace Node
*/
Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Node = AcpiNsMapHandleToNode (Handle);
if (!Node)
{
Status = AE_BAD_PARAMETER;
goto UnlockAndExit;
}
/* Validate/Allocate/Clear caller buffer */
Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH);
if (ACPI_FAILURE (Status))
{
goto UnlockAndExit;
}
/* Just copy the ACPI name from the Node and zero terminate it */
ACPI_STRNCPY (Buffer->Pointer, AcpiUtGetNodeName (Node),
ACPI_NAME_SIZE);
((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0;
Status = AE_OK;
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
return (Status);
}
ACPI_STATUS
AcpiGetTable (
ACPI_TABLE_TYPE TableType,
UINT32 Instance,
ACPI_BUFFER *RetBuffer)
{
ACPI_TABLE_HEADER *TblPtr;
ACPI_STATUS Status;
ACPI_SIZE TableLength;
ACPI_FUNCTION_TRACE ("AcpiGetTable");
/* Parameter validation */
if (Instance == 0)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Status = AcpiUtValidateBuffer (RetBuffer);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Check the table type and instance */
if ((TableType > ACPI_TABLE_MAX) ||
(ACPI_IS_SINGLE_TABLE (AcpiGbl_AcpiTableData[TableType].Flags) &&
Instance > 1))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Get a pointer to the entire table */
Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* AcpiTbGetTablePtr will return a NULL pointer if the
* table is not loaded.
*/
if (TblPtr == NULL)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Get the table length */
if (TableType == ACPI_TABLE_RSDP)
{
/*
* RSD PTR is the only "table" without a header
*/
TableLength = sizeof (RSDP_DESCRIPTOR);
}
else
{
TableLength = (ACPI_SIZE) TblPtr->Length;
}
/* Validate/Allocate/Clear caller buffer */
Status = AcpiUtInitializeBuffer (RetBuffer, TableLength);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Copy the table to the buffer */
ACPI_MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, TableLength);
return_ACPI_STATUS (AE_OK);
}