1167802Sjkim/****************************************************************************** 2167802Sjkim * 3167802Sjkim * Module Name: tbfind - find table 4167802Sjkim * 5167802Sjkim *****************************************************************************/ 6167802Sjkim 7217365Sjkim/* 8306536Sjkim * Copyright (C) 2000 - 2016, Intel Corp. 9167802Sjkim * All rights reserved. 10167802Sjkim * 11217365Sjkim * Redistribution and use in source and binary forms, with or without 12217365Sjkim * modification, are permitted provided that the following conditions 13217365Sjkim * are met: 14217365Sjkim * 1. Redistributions of source code must retain the above copyright 15217365Sjkim * notice, this list of conditions, and the following disclaimer, 16217365Sjkim * without modification. 17217365Sjkim * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18217365Sjkim * substantially similar to the "NO WARRANTY" disclaimer below 19217365Sjkim * ("Disclaimer") and any redistribution must be conditioned upon 20217365Sjkim * including a substantially similar Disclaimer requirement for further 21217365Sjkim * binary redistribution. 22217365Sjkim * 3. Neither the names of the above-listed copyright holders nor the names 23217365Sjkim * of any contributors may be used to endorse or promote products derived 24217365Sjkim * from this software without specific prior written permission. 25167802Sjkim * 26217365Sjkim * Alternatively, this software may be distributed under the terms of the 27217365Sjkim * GNU General Public License ("GPL") version 2 as published by the Free 28217365Sjkim * Software Foundation. 29167802Sjkim * 30217365Sjkim * NO WARRANTY 31217365Sjkim * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32217365Sjkim * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33217365Sjkim * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34217365Sjkim * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35217365Sjkim * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36217365Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37217365Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38217365Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39217365Sjkim * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40217365Sjkim * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41217365Sjkim * POSSIBILITY OF SUCH DAMAGES. 42217365Sjkim */ 43167802Sjkim 44193341Sjkim#include <contrib/dev/acpica/include/acpi.h> 45193341Sjkim#include <contrib/dev/acpica/include/accommon.h> 46193341Sjkim#include <contrib/dev/acpica/include/actables.h> 47167802Sjkim 48167802Sjkim#define _COMPONENT ACPI_TABLES 49167802Sjkim ACPI_MODULE_NAME ("tbfind") 50167802Sjkim 51167802Sjkim 52167802Sjkim/******************************************************************************* 53167802Sjkim * 54167802Sjkim * FUNCTION: AcpiTbFindTable 55167802Sjkim * 56167802Sjkim * PARAMETERS: Signature - String with ACPI table signature 57167802Sjkim * OemId - String with the table OEM ID 58167802Sjkim * OemTableId - String with the OEM Table ID 59167802Sjkim * TableIndex - Where the table index is returned 60167802Sjkim * 61167802Sjkim * RETURN: Status and table index 62167802Sjkim * 63167802Sjkim * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the 64167802Sjkim * Signature, OEM ID and OEM Table ID. Returns an index that can 65167802Sjkim * be used to get the table header or entire table. 66167802Sjkim * 67167802Sjkim ******************************************************************************/ 68167802Sjkim 69167802SjkimACPI_STATUS 70167802SjkimAcpiTbFindTable ( 71167802Sjkim char *Signature, 72167802Sjkim char *OemId, 73167802Sjkim char *OemTableId, 74193267Sjkim UINT32 *TableIndex) 75167802Sjkim{ 76167802Sjkim ACPI_STATUS Status; 77193267Sjkim ACPI_TABLE_HEADER Header; 78306536Sjkim UINT32 i; 79167802Sjkim 80167802Sjkim 81167802Sjkim ACPI_FUNCTION_TRACE (TbFindTable); 82167802Sjkim 83167802Sjkim 84306536Sjkim /* Validate the input table signature */ 85306536Sjkim 86306536Sjkim if (!AcpiUtValidNameseg (Signature)) 87306536Sjkim { 88306536Sjkim return_ACPI_STATUS (AE_BAD_SIGNATURE); 89306536Sjkim } 90306536Sjkim 91306536Sjkim /* Don't allow the OEM strings to be too long */ 92306536Sjkim 93306536Sjkim if ((strlen (OemId) > ACPI_OEM_ID_SIZE) || 94306536Sjkim (strlen (OemTableId) > ACPI_OEM_TABLE_ID_SIZE)) 95306536Sjkim { 96306536Sjkim return_ACPI_STATUS (AE_AML_STRING_LIMIT); 97306536Sjkim } 98306536Sjkim 99193267Sjkim /* Normalize the input strings */ 100193267Sjkim 101306536Sjkim memset (&Header, 0, sizeof (ACPI_TABLE_HEADER)); 102241973Sjkim ACPI_MOVE_NAME (Header.Signature, Signature); 103306536Sjkim strncpy (Header.OemId, OemId, ACPI_OEM_ID_SIZE); 104306536Sjkim strncpy (Header.OemTableId, OemTableId, ACPI_OEM_TABLE_ID_SIZE); 105193267Sjkim 106193267Sjkim /* Search for the table */ 107193267Sjkim 108207344Sjkim for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) 109167802Sjkim { 110306536Sjkim if (memcmp (&(AcpiGbl_RootTableList.Tables[i].Signature), 111306536Sjkim Header.Signature, ACPI_NAME_SIZE)) 112167802Sjkim { 113167802Sjkim /* Not the requested table */ 114167802Sjkim 115167802Sjkim continue; 116167802Sjkim } 117167802Sjkim 118167802Sjkim /* Table with matching signature has been found */ 119167802Sjkim 120167802Sjkim if (!AcpiGbl_RootTableList.Tables[i].Pointer) 121167802Sjkim { 122167802Sjkim /* Table is not currently mapped, map it */ 123167802Sjkim 124281075Sdim Status = AcpiTbValidateTable (&AcpiGbl_RootTableList.Tables[i]); 125167802Sjkim if (ACPI_FAILURE (Status)) 126167802Sjkim { 127167802Sjkim return_ACPI_STATUS (Status); 128167802Sjkim } 129167802Sjkim 130167802Sjkim if (!AcpiGbl_RootTableList.Tables[i].Pointer) 131167802Sjkim { 132167802Sjkim continue; 133167802Sjkim } 134167802Sjkim } 135167802Sjkim 136167802Sjkim /* Check for table match on all IDs */ 137167802Sjkim 138306536Sjkim if (!memcmp (AcpiGbl_RootTableList.Tables[i].Pointer->Signature, 139306536Sjkim Header.Signature, ACPI_NAME_SIZE) && 140167802Sjkim (!OemId[0] || 141306536Sjkim !memcmp (AcpiGbl_RootTableList.Tables[i].Pointer->OemId, 142306536Sjkim Header.OemId, ACPI_OEM_ID_SIZE)) && 143167802Sjkim (!OemTableId[0] || 144306536Sjkim !memcmp (AcpiGbl_RootTableList.Tables[i].Pointer->OemTableId, 145306536Sjkim Header.OemTableId, ACPI_OEM_TABLE_ID_SIZE))) 146167802Sjkim { 147167802Sjkim *TableIndex = i; 148167802Sjkim 149167802Sjkim ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", 150193267Sjkim Header.Signature)); 151167802Sjkim return_ACPI_STATUS (AE_OK); 152167802Sjkim } 153167802Sjkim } 154167802Sjkim 155167802Sjkim return_ACPI_STATUS (AE_NOT_FOUND); 156167802Sjkim} 157