1 /****************************************************************************** 2 * 3 * Module Name: tbfind - find table 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 #define __TBFIND_C__ 117 118 #include "acpi.h" 119 #include "accommon.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