diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/tables/tbfind.c')
-rw-r--r-- | sys/contrib/dev/acpica/components/tables/tbfind.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/tables/tbfind.c b/sys/contrib/dev/acpica/components/tables/tbfind.c new file mode 100644 index 0000000..f3acb42 --- /dev/null +++ b/sys/contrib/dev/acpica/components/tables/tbfind.c @@ -0,0 +1,143 @@ +/****************************************************************************** + * + * Module Name: tbfind - find table + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + +#define __TBFIND_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/actables.h> + +#define _COMPONENT ACPI_TABLES + ACPI_MODULE_NAME ("tbfind") + + +/******************************************************************************* + * + * FUNCTION: AcpiTbFindTable + * + * PARAMETERS: Signature - String with ACPI table signature + * OemId - String with the table OEM ID + * OemTableId - String with the OEM Table ID + * TableIndex - Where the table index is returned + * + * RETURN: Status and table index + * + * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the + * Signature, OEM ID and OEM Table ID. Returns an index that can + * be used to get the table header or entire table. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiTbFindTable ( + char *Signature, + char *OemId, + char *OemTableId, + UINT32 *TableIndex) +{ + 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); +} |