1 /****************************************************************************** 2 * 3 * Module Name: tbfind - find table 4 * $Revision: 1.5 $ 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #define __TBFIND_C__ 118 119 #include "acpi.h" 120 #include "actables.h" 121 122 #define _COMPONENT ACPI_TABLES 123 ACPI_MODULE_NAME ("tbfind") 124 125 126 /******************************************************************************* 127 * 128 * FUNCTION: AcpiTbFindTable 129 * 130 * PARAMETERS: Signature - String with ACPI table signature 131 * OemId - String with the table OEM ID 132 * OemTableId - String with the OEM Table ID 133 * TableIndex - Where the table index is returned 134 * 135 * RETURN: Status and table index 136 * 137 * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the 138 * Signature, OEM ID and OEM Table ID. Returns an index that can 139 * be used to get the table header or entire table. 140 * 141 ******************************************************************************/ 142 143 ACPI_STATUS 144 AcpiTbFindTable ( 145 char *Signature, 146 char *OemId, 147 char *OemTableId, 148 UINT32 *TableIndex) 149 { 150 UINT32 i; 151 ACPI_STATUS Status; 152 ACPI_TABLE_HEADER Header; 153 154 155 ACPI_FUNCTION_TRACE (TbFindTable); 156 157 158 /* Normalize the input strings */ 159 160 ACPI_MEMSET (&Header, 0, sizeof (ACPI_TABLE_HEADER)); 161 ACPI_STRNCPY (Header.Signature, Signature, ACPI_NAME_SIZE); 162 ACPI_STRNCPY (Header.OemId, OemId, ACPI_OEM_ID_SIZE); 163 ACPI_STRNCPY (Header.OemTableId, OemTableId, ACPI_OEM_TABLE_ID_SIZE); 164 165 /* Search for the table */ 166 167 for (i = 0; i < AcpiGbl_RootTableList.Count; ++i) 168 { 169 if (ACPI_MEMCMP (&(AcpiGbl_RootTableList.Tables[i].Signature), 170 Header.Signature, ACPI_NAME_SIZE)) 171 { 172 /* Not the requested table */ 173 174 continue; 175 } 176 177 /* Table with matching signature has been found */ 178 179 if (!AcpiGbl_RootTableList.Tables[i].Pointer) 180 { 181 /* Table is not currently mapped, map it */ 182 183 Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); 184 if (ACPI_FAILURE (Status)) 185 { 186 return_ACPI_STATUS (Status); 187 } 188 189 if (!AcpiGbl_RootTableList.Tables[i].Pointer) 190 { 191 continue; 192 } 193 } 194 195 /* Check for table match on all IDs */ 196 197 if (!ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->Signature, 198 Header.Signature, ACPI_NAME_SIZE) && 199 (!OemId[0] || 200 !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemId, 201 Header.OemId, ACPI_OEM_ID_SIZE)) && 202 (!OemTableId[0] || 203 !ACPI_MEMCMP (AcpiGbl_RootTableList.Tables[i].Pointer->OemTableId, 204 Header.OemTableId, ACPI_OEM_TABLE_ID_SIZE))) 205 { 206 *TableIndex = i; 207 208 ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", 209 Header.Signature)); 210 return_ACPI_STATUS (AE_OK); 211 } 212 } 213 214 return_ACPI_STATUS (AE_NOT_FOUND); 215 } 216