| /******************************************************************************* |
| * |
| * Module Name: utexcep - Exception code support |
| * |
| ******************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2018, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #define EXPORT_ACPI_INTERFACES |
| |
| #define ACPI_DEFINE_EXCEPTION_TABLE |
| #include <acpi/acpi.h> |
| #include "accommon.h" |
| |
| #define _COMPONENT ACPI_UTILITIES |
| ACPI_MODULE_NAME("utexcep") |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_format_exception |
| * |
| * PARAMETERS: status - The acpi_status code to be formatted |
| * |
| * RETURN: A string containing the exception text. A valid pointer is |
| * always returned. |
| * |
| * DESCRIPTION: This function translates an ACPI exception into an ASCII |
| * string. Returns "unknown status" string for invalid codes. |
| * |
| ******************************************************************************/ |
| const char *acpi_format_exception(acpi_status status) |
| { |
| const struct acpi_exception_info *exception; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| exception = acpi_ut_validate_exception(status); |
| if (!exception) { |
| |
| /* Exception code was not recognized */ |
| |
| ACPI_ERROR((AE_INFO, |
| "Unknown exception code: 0x%8.8X", status)); |
| |
| return ("UNKNOWN_STATUS_CODE"); |
| } |
| |
| return (exception->name); |
| } |
| |
| ACPI_EXPORT_SYMBOL(acpi_format_exception) |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_validate_exception |
| * |
| * PARAMETERS: status - The acpi_status code to be formatted |
| * |
| * RETURN: A string containing the exception text. NULL if exception is |
| * not valid. |
| * |
| * DESCRIPTION: This function validates and translates an ACPI exception into |
| * an ASCII string. |
| * |
| ******************************************************************************/ |
| const struct acpi_exception_info *acpi_ut_validate_exception(acpi_status status) |
| { |
| u32 sub_status; |
| const struct acpi_exception_info *exception = NULL; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| /* |
| * Status is composed of two parts, a "type" and an actual code |
| */ |
| sub_status = (status & ~AE_CODE_MASK); |
| |
| switch (status & AE_CODE_MASK) { |
| case AE_CODE_ENVIRONMENTAL: |
| |
| if (sub_status <= AE_CODE_ENV_MAX) { |
| exception = &acpi_gbl_exception_names_env[sub_status]; |
| } |
| break; |
| |
| case AE_CODE_PROGRAMMER: |
| |
| if (sub_status <= AE_CODE_PGM_MAX) { |
| exception = &acpi_gbl_exception_names_pgm[sub_status]; |
| } |
| break; |
| |
| case AE_CODE_ACPI_TABLES: |
| |
| if (sub_status <= AE_CODE_TBL_MAX) { |
| exception = &acpi_gbl_exception_names_tbl[sub_status]; |
| } |
| break; |
| |
| case AE_CODE_AML: |
| |
| if (sub_status <= AE_CODE_AML_MAX) { |
| exception = &acpi_gbl_exception_names_aml[sub_status]; |
| } |
| break; |
| |
| case AE_CODE_CONTROL: |
| |
| if (sub_status <= AE_CODE_CTRL_MAX) { |
| exception = &acpi_gbl_exception_names_ctrl[sub_status]; |
| } |
| break; |
| |
| default: |
| |
| break; |
| } |
| |
| if (!exception || !exception->name) { |
| return (NULL); |
| } |
| |
| return (exception); |
| } |