OslMapTable
Status = OslMapTable(Address, NULL, &MappedTable);
Status = OslMapTable(TableAddress, NULL, &MappedTable);
static ACPI_STATUS OslMapTable(ACPI_SIZE, char *, ACPI_TABLE_HEADER **);
Status = OslMapTable(TableAddress, Signature, &MappedTable);
Status = OslMapTable(TableAddress, NULL, &MappedTable);