1 /******************************************************************************* 2 * 3 * Module Name: utexcep - Exception code support 4 * 5 ******************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2013, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 45 #define __UTEXCEP_C__ 46 47 #define ACPI_DEFINE_EXCEPTION_TABLE 48 #include <contrib/dev/acpica/include/acpi.h> 49 #include <contrib/dev/acpica/include/accommon.h> 50 51 52 #define _COMPONENT ACPI_UTILITIES 53 ACPI_MODULE_NAME ("utexcep") 54 55 56 /******************************************************************************* 57 * 58 * FUNCTION: AcpiFormatException 59 * 60 * PARAMETERS: Status - The ACPI_STATUS code to be formatted 61 * 62 * RETURN: A string containing the exception text. A valid pointer is 63 * always returned. 64 * 65 * DESCRIPTION: This function translates an ACPI exception into an ASCII 66 * string. Returns "unknown status" string for invalid codes. 67 * 68 ******************************************************************************/ 69 70 const char * 71 AcpiFormatException ( 72 ACPI_STATUS Status) 73 { 74 const ACPI_EXCEPTION_INFO *Exception; 75 76 77 ACPI_FUNCTION_ENTRY (); 78 79 80 Exception = AcpiUtValidateException (Status); 81 if (!Exception) 82 { 83 /* Exception code was not recognized */ 84 85 ACPI_ERROR ((AE_INFO, 86 "Unknown exception code: 0x%8.8X", Status)); 87 88 return ("UNKNOWN_STATUS_CODE"); 89 } 90 91 return (Exception->Name); 92 } 93 94 ACPI_EXPORT_SYMBOL (AcpiFormatException) 95 96 97 /******************************************************************************* 98 * 99 * FUNCTION: AcpiUtValidateException 100 * 101 * PARAMETERS: Status - The ACPI_STATUS code to be formatted 102 * 103 * RETURN: A string containing the exception text. NULL if exception is 104 * not valid. 105 * 106 * DESCRIPTION: This function validates and translates an ACPI exception into 107 * an ASCII string. 108 * 109 ******************************************************************************/ 110 111 const ACPI_EXCEPTION_INFO * 112 AcpiUtValidateException ( 113 ACPI_STATUS Status) 114 { 115 UINT32 SubStatus; 116 const ACPI_EXCEPTION_INFO *Exception = NULL; 117 118 119 ACPI_FUNCTION_ENTRY (); 120 121 122 /* 123 * Status is composed of two parts, a "type" and an actual code 124 */ 125 SubStatus = (Status & ~AE_CODE_MASK); 126 127 switch (Status & AE_CODE_MASK) 128 { 129 case AE_CODE_ENVIRONMENTAL: 130 131 if (SubStatus <= AE_CODE_ENV_MAX) 132 { 133 Exception = &AcpiGbl_ExceptionNames_Env [SubStatus]; 134 } 135 break; 136 137 case AE_CODE_PROGRAMMER: 138 139 if (SubStatus <= AE_CODE_PGM_MAX) 140 { 141 Exception = &AcpiGbl_ExceptionNames_Pgm [SubStatus]; 142 } 143 break; 144 145 case AE_CODE_ACPI_TABLES: 146 147 if (SubStatus <= AE_CODE_TBL_MAX) 148 { 149 Exception = &AcpiGbl_ExceptionNames_Tbl [SubStatus]; 150 } 151 break; 152 153 case AE_CODE_AML: 154 155 if (SubStatus <= AE_CODE_AML_MAX) 156 { 157 Exception = &AcpiGbl_ExceptionNames_Aml [SubStatus]; 158 } 159 break; 160 161 case AE_CODE_CONTROL: 162 163 if (SubStatus <= AE_CODE_CTRL_MAX) 164 { 165 Exception = &AcpiGbl_ExceptionNames_Ctrl [SubStatus]; 166 } 167 break; 168 169 default: 170 171 break; 172 } 173 174 if (!Exception || !Exception->Name) 175 { 176 return (NULL); 177 } 178 179 return (Exception); 180 } 181