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 - 2021, 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 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #include <contrib/dev/acpica/include/acpi.h> 153 #include <contrib/dev/acpica/include/accommon.h> 154 #include <contrib/dev/acpica/include/actables.h> 155 156 #define _COMPONENT ACPI_TABLES 157 ACPI_MODULE_NAME ("tbfind") 158 159 160 /******************************************************************************* 161 * 162 * FUNCTION: AcpiTbFindTable 163 * 164 * PARAMETERS: Signature - String with ACPI table signature 165 * OemId - String with the table OEM ID 166 * OemTableId - String with the OEM Table ID 167 * TableIndex - Where the table index is returned 168 * 169 * RETURN: Status and table index 170 * 171 * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the 172 * Signature, OEM ID and OEM Table ID. Returns an index that can 173 * be used to get the table header or entire table. 174 * 175 ******************************************************************************/ 176 177 ACPI_STATUS 178 AcpiTbFindTable ( 179 char *Signature, 180 char *OemId, 181 char *OemTableId, 182 UINT32 *TableIndex) 183 { 184 ACPI_STATUS Status = AE_OK; 185 ACPI_TABLE_HEADER Header; 186 UINT32 i; 187 188 189 ACPI_FUNCTION_TRACE (TbFindTable); 190 191 192 /* Validate the input table signature */ 193 194 if (!AcpiUtValidNameseg (Signature)) 195 { 196 return_ACPI_STATUS (AE_BAD_SIGNATURE); 197 } 198 199 /* Don't allow the OEM strings to be too long */ 200 201 if ((strlen (OemId) > ACPI_OEM_ID_SIZE) || 202 (strlen (OemTableId) > ACPI_OEM_TABLE_ID_SIZE)) 203 { 204 return_ACPI_STATUS (AE_AML_STRING_LIMIT); 205 } 206 207 /* Normalize the input strings */ 208 209 memset (&Header, 0, sizeof (ACPI_TABLE_HEADER)); 210 ACPI_COPY_NAMESEG (Header.Signature, Signature); 211 strncpy (Header.OemId, OemId, ACPI_OEM_ID_SIZE); 212 strncpy (Header.OemTableId, OemTableId, ACPI_OEM_TABLE_ID_SIZE); 213 214 /* Search for the table */ 215 216 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 217 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) 218 { 219 if (memcmp (&(AcpiGbl_RootTableList.Tables[i].Signature), 220 Header.Signature, ACPI_NAMESEG_SIZE)) 221 { 222 /* Not the requested table */ 223 224 continue; 225 } 226 227 /* Table with matching signature has been found */ 228 229 if (!AcpiGbl_RootTableList.Tables[i].Pointer) 230 { 231 /* Table is not currently mapped, map it */ 232 233 Status = AcpiTbValidateTable (&AcpiGbl_RootTableList.Tables[i]); 234 if (ACPI_FAILURE (Status)) 235 { 236 goto UnlockAndExit; 237 } 238 239 if (!AcpiGbl_RootTableList.Tables[i].Pointer) 240 { 241 continue; 242 } 243 } 244 245 /* Check for table match on all IDs */ 246 247 if (!memcmp (AcpiGbl_RootTableList.Tables[i].Pointer->Signature, 248 Header.Signature, ACPI_NAMESEG_SIZE) && 249 (!OemId[0] || 250 !memcmp (AcpiGbl_RootTableList.Tables[i].Pointer->OemId, 251 Header.OemId, ACPI_OEM_ID_SIZE)) && 252 (!OemTableId[0] || 253 !memcmp (AcpiGbl_RootTableList.Tables[i].Pointer->OemTableId, 254 Header.OemTableId, ACPI_OEM_TABLE_ID_SIZE))) 255 { 256 *TableIndex = i; 257 258 ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", 259 Header.Signature)); 260 goto UnlockAndExit; 261 } 262 } 263 Status = AE_NOT_FOUND; 264 265 UnlockAndExit: 266 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 267 return_ACPI_STATUS (Status); 268 } 269