ACPI_STATUS
AdGetLocalTables (
void)
{
ACPI_STATUS Status;
ACPI_TABLE_HEADER TableHeader;
ACPI_TABLE_HEADER *NewTable;
UINT32 TableIndex;
/* Get the DSDT via table override */
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_DSDT);
AcpiOsTableOverride (&TableHeader, &NewTable);
if (!NewTable)
{
fprintf (stderr, "Could not obtain DSDT\n");
return (AE_NO_ACPI_TABLES);
}
AdWriteTable (NewTable, NewTable->Length,
ACPI_SIG_DSDT, NewTable->OemTableId);
/* Store DSDT in the Table Manager */
Status = AcpiTbStoreTable (0, NewTable, NewTable->Length,
0, &TableIndex);
if (ACPI_FAILURE (Status))
{
fprintf (stderr, "Could not store DSDT\n");
return (AE_NO_ACPI_TABLES);
}
return (AE_OK);
}
ACPI_STATUS
AcpiTbAddTable (
ACPI_TABLE_DESC *TableDesc,
UINT32 *TableIndex)
{
UINT32 i;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (TbAddTable);
if (!TableDesc->Pointer)
{
Status = AcpiTbVerifyTable (TableDesc);
if (ACPI_FAILURE (Status) || !TableDesc->Pointer)
{
return_ACPI_STATUS (Status);
}
}
/*
* Validate the incoming table signature.
*
* 1) Originally, we checked the table signature for "SSDT" or "PSDT".
* 2) We added support for OEMx tables, signature "OEM".
* 3) Valid tables were encountered with a null signature, so we just
* gave up on validating the signature, (05/2008).
* 4) We encountered non-AML tables such as the MADT, which caused
* interpreter errors and kernel faults. So now, we once again allow
* only "SSDT", "OEMx", and now, also a null signature. (05/2011).
*/
if ((TableDesc->Pointer->Signature[0] != 0x00) &&
(!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) &&
(ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3)))
{
ACPI_BIOS_ERROR ((AE_INFO,
"Table has invalid signature [%4.4s] (0x%8.8X), "
"must be SSDT or OEMx",
AcpiUtValidAcpiName (TableDesc->Pointer->Signature) ?
TableDesc->Pointer->Signature : "????",
*(UINT32 *) TableDesc->Pointer->Signature));
return_ACPI_STATUS (AE_BAD_SIGNATURE);
}
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
/* Check if table is already registered */
for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
{
if (!AcpiGbl_RootTableList.Tables[i].Pointer)
{
Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
if (ACPI_FAILURE (Status) ||
!AcpiGbl_RootTableList.Tables[i].Pointer)
{
continue;
}
}
/*
* Check for a table match on the entire table length,
* not just the header.
*/
if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length)
{
continue;
}
if (ACPI_MEMCMP (TableDesc->Pointer,
AcpiGbl_RootTableList.Tables[i].Pointer,
AcpiGbl_RootTableList.Tables[i].Length))
{
continue;
}
/*
* Note: the current mechanism does not unregister a table if it is
* dynamically unloaded. The related namespace entries are deleted,
* but the table remains in the root table list.
*
* The assumption here is that the number of different tables that
* will be loaded is actually small, and there is minimal overhead
* in just keeping the table in case it is needed again.
*
* If this assumption changes in the future (perhaps on large
* machines with many table load/unload operations), tables will
* need to be unregistered when they are unloaded, and slots in the
* root table list should be reused when empty.
*/
/*
* Table is already registered.
* We can delete the table that was passed as a parameter.
*/
AcpiTbDeleteTable (TableDesc);
*TableIndex = i;
if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED)
{
/* Table is still loaded, this is an error */
Status = AE_ALREADY_EXISTS;
goto Release;
}
else
{
/* Table was unloaded, allow it to be reloaded */
TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer;
TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address;
Status = AE_OK;
goto PrintHeader;
}
}
/*
* ACPI Table Override:
* Allow the host to override dynamically loaded tables.
* NOTE: the table is fully mapped at this point, and the mapping will
* be deleted by TbTableOverride if the table is actually overridden.
*/
(void) AcpiTbTableOverride (TableDesc->Pointer, TableDesc);
/* Add the table to the global root table list */
Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer,
TableDesc->Length, TableDesc->Flags, TableIndex);
if (ACPI_FAILURE (Status))
{
goto Release;
}
PrintHeader:
AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer);
Release:
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AdParseTable (
ACPI_TABLE_HEADER *Table,
ACPI_OWNER_ID *OwnerId,
BOOLEAN LoadTable,
BOOLEAN External)
{
ACPI_STATUS Status = AE_OK;
ACPI_WALK_STATE *WalkState;
UINT8 *AmlStart;
UINT32 AmlLength;
UINT32 TableIndex;
if (!Table)
{
return (AE_NOT_EXIST);
}
/* Pass 1: Parse everything except control method bodies */
fprintf (stderr, "Pass 1 parse of [%4.4s]\n", (char *) Table->Signature);
AmlLength = Table->Length - sizeof (ACPI_TABLE_HEADER);
AmlStart = ((UINT8 *) Table + sizeof (ACPI_TABLE_HEADER));
/* Create the root object */
AcpiGbl_ParseOpRoot = AcpiPsCreateScopeOp ();
if (!AcpiGbl_ParseOpRoot)
{
return (AE_NO_MEMORY);
}
/* Create and initialize a new walk state */
WalkState = AcpiDsCreateWalkState (0,
AcpiGbl_ParseOpRoot, NULL, NULL);
if (!WalkState)
{
return (AE_NO_MEMORY);
}
Status = AcpiDsInitAmlWalk (WalkState, AcpiGbl_ParseOpRoot,
NULL, AmlStart, AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
if (ACPI_FAILURE (Status))
{
return (Status);
}
WalkState->ParseFlags &= ~ACPI_PARSE_DELETE_TREE;
WalkState->ParseFlags |= ACPI_PARSE_DISASSEMBLE;
Status = AcpiPsParseAml (WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* If LoadTable is FALSE, we are parsing the last loaded table */
TableIndex = AcpiGbl_RootTableList.CurrentTableCount - 1;
/* Pass 2 */
if (LoadTable)
{
Status = AcpiTbStoreTable ((ACPI_PHYSICAL_ADDRESS) Table, Table,
Table->Length, ACPI_TABLE_ORIGIN_ALLOCATED, &TableIndex);
if (ACPI_FAILURE (Status))
{
return (Status);
}
Status = AcpiTbAllocateOwnerId (TableIndex);
if (ACPI_FAILURE (Status))
{
return (Status);
}
if (OwnerId)
{
Status = AcpiTbGetOwnerId (TableIndex, OwnerId);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
}
fprintf (stderr, "Pass 2 parse of [%4.4s]\n", (char *) Table->Signature);
Status = AcpiNsOneCompleteParse (ACPI_IMODE_LOAD_PASS2, TableIndex, NULL);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* No need to parse control methods of external table */
if (External)
{
return (AE_OK);
}
/* Pass 3: Parse control methods and link their parse trees into the main parse tree */
fprintf (stderr, "Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)\n");
Status = AcpiDmParseDeferredOps (AcpiGbl_ParseOpRoot);
fprintf (stderr, "\n");
/* Process Resource Templates */
AcpiDmFindResources (AcpiGbl_ParseOpRoot);
fprintf (stderr, "Parsing completed\n");
return (AE_OK);
}
ACPI_STATUS
AdGetLocalTables (
char *Filename,
BOOLEAN GetAllTables)
{
ACPI_STATUS Status;
ACPI_TABLE_HEADER TableHeader;
ACPI_TABLE_HEADER *NewTable;
UINT32 NumTables;
UINT32 PointerSize;
UINT32 TableIndex;
if (GetAllTables)
{
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_RSDT);
AcpiOsTableOverride (&TableHeader, &NewTable);
if (!NewTable)
{
fprintf (stderr, "Could not obtain RSDT\n");
return (AE_NO_ACPI_TABLES);
}
else
{
AdWriteTable (NewTable, NewTable->Length,
ACPI_SIG_RSDT, NewTable->OemTableId);
}
if (ACPI_COMPARE_NAME (NewTable->Signature, ACPI_SIG_RSDT))
{
PointerSize = sizeof (UINT32);
}
else
{
PointerSize = sizeof (UINT64);
}
/*
* Determine the number of tables pointed to by the RSDT/XSDT.
* This is defined by the ACPI Specification to be the number of
* pointers contained within the RSDT/XSDT. The size of the pointers
* is architecture-dependent.
*/
NumTables = (NewTable->Length - sizeof (ACPI_TABLE_HEADER)) / PointerSize;
AcpiOsPrintf ("There are %u tables defined in the %4.4s\n\n",
NumTables, NewTable->Signature);
/* Get the FADT */
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_FADT);
AcpiOsTableOverride (&TableHeader, &NewTable);
if (NewTable)
{
AdWriteTable (NewTable, NewTable->Length,
ACPI_SIG_FADT, NewTable->OemTableId);
}
AcpiOsPrintf ("\n");
/* Don't bother with FACS, it is usually all zeros */
}
/* Always get the DSDT */
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_DSDT);
AcpiOsTableOverride (&TableHeader, &NewTable);
if (NewTable)
{
AdWriteTable (NewTable, NewTable->Length,
ACPI_SIG_DSDT, NewTable->OemTableId);
/* Store DSDT in the Table Manager */
Status = AcpiTbStoreTable (0, NewTable, NewTable->Length,
0, &TableIndex);
if (ACPI_FAILURE (Status))
{
fprintf (stderr, "Could not store DSDT\n");
return (AE_NO_ACPI_TABLES);
}
}
else
{
fprintf (stderr, "Could not obtain DSDT\n");
return (AE_NO_ACPI_TABLES);
}
#if 0
/* TBD: Future implementation */
AcpiOsPrintf ("\n");
/* Get all SSDTs */
ACPI_MOVE_32_TO_32 (TableHeader.Signature, ACPI_SIG_SSDT);
do
{
NewTable = NULL;
Status = AcpiOsTableOverride (&TableHeader, &NewTable);
} while (NewTable);
#endif
return (AE_OK);
}
/* We can delete the table that was passed as a parameter */
AcpiTbDeleteTable (TableDesc);
/* Setup descriptor for the new table */
TableDesc->Address = ACPI_PTR_TO_PHYSADDR (OverrideTable);
TableDesc->Pointer = OverrideTable;
TableDesc->Length = OverrideTable->Length;
TableDesc->Flags = ACPI_TABLE_ORIGIN_OVERRIDE;
}
/* Add the table to the global root table list */
Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer,
TableDesc->Length, TableDesc->Flags, TableIndex);
if (ACPI_FAILURE (Status))
{
goto Release;
}
PrintHeader:
AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer);
Release:
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
