ACPI_STATUS AcpiTbFindTable	(	char *	Signature,
		char *	OemId,
		char *	OemTableId,
		UINT32 *	TableIndex
	)

Definition at line 144 of file tbfind.c.

Referenced by AcpiDsEvalTableRegionOperands(), and AcpiExLoadTableOp().

{
    UINT32                  i;
    ACPI_STATUS             Status;
    ACPI_TABLE_HEADER       Header;


    ACPI_FUNCTION_TRACE (TbFindTable);


    /* Normalize the input strings */

    ACPI_MEMSET (&Header, 0, sizeof (ACPI_TABLE_HEADER));
    ACPI_STRNCPY (Header.Signature, Signature, ACPI_NAME_SIZE);
    ACPI_STRNCPY (Header.OemId, OemId, ACPI_OEM_ID_SIZE);
    ACPI_STRNCPY (Header.OemTableId, OemTableId, ACPI_OEM_TABLE_ID_SIZE);

    /* Search for the table */

    for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
    {
        if (ACPI_MEMCMP (&(AcpiGbl_RootTableList.Tables[i].Signature),
                            Header.Signature, ACPI_NAME_SIZE))
        {
            /* Not the requested table */

            continue;
        }

        /* Table with matching signature has been found */

        if (!AcpiGbl_RootTableList.Tables[i].Pointer)
        {
            /* Table is not currently mapped, map it */

            Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
            if (ACPI_FAILURE (Status))
            {
                return_ACPI_STATUS (Status);
            }

            if (!AcpiGbl_RootTableList.Tables[i].Pointer)
            {
                continue;
            }
        }

        /* Check for table match on all IDs */

        if (!ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->Signature,
                            Header.Signature, ACPI_NAME_SIZE) &&
            (!OemId[0] ||
             !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemId,
                             Header.OemId, ACPI_OEM_ID_SIZE)) &&
            (!OemTableId[0] ||
             !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemTableId,
                             Header.OemTableId, ACPI_OEM_TABLE_ID_SIZE)))
        {
            *TableIndex = i;

            ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n",
                Header.Signature));
            return_ACPI_STATUS (AE_OK);
        }
    }

    return_ACPI_STATUS (AE_NOT_FOUND);
}

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