550 lines
15 KiB
C
550 lines
15 KiB
C
/******************************************************************************
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*
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* Module Name: utdecode - Utility decoding routines (value-to-string)
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2011, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utdecode")
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/*******************************************************************************
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*
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* FUNCTION: acpi_format_exception
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*
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* PARAMETERS: Status - The acpi_status code to be formatted
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*
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* RETURN: A string containing the exception text. A valid pointer is
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* always returned.
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*
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* DESCRIPTION: This function translates an ACPI exception into an ASCII string
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* It is here instead of utxface.c so it is always present.
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*
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******************************************************************************/
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const char *acpi_format_exception(acpi_status status)
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{
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const char *exception = NULL;
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ACPI_FUNCTION_ENTRY();
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exception = acpi_ut_validate_exception(status);
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if (!exception) {
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/* Exception code was not recognized */
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ACPI_ERROR((AE_INFO,
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"Unknown exception code: 0x%8.8X", status));
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exception = "UNKNOWN_STATUS_CODE";
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}
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return (ACPI_CAST_PTR(const char, exception));
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}
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ACPI_EXPORT_SYMBOL(acpi_format_exception)
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/*
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* Properties of the ACPI Object Types, both internal and external.
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* The table is indexed by values of acpi_object_type
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*/
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const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES] = {
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ACPI_NS_NORMAL, /* 00 Any */
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ACPI_NS_NORMAL, /* 01 Number */
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ACPI_NS_NORMAL, /* 02 String */
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ACPI_NS_NORMAL, /* 03 Buffer */
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ACPI_NS_NORMAL, /* 04 Package */
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ACPI_NS_NORMAL, /* 05 field_unit */
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ACPI_NS_NEWSCOPE, /* 06 Device */
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ACPI_NS_NORMAL, /* 07 Event */
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ACPI_NS_NEWSCOPE, /* 08 Method */
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ACPI_NS_NORMAL, /* 09 Mutex */
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ACPI_NS_NORMAL, /* 10 Region */
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ACPI_NS_NEWSCOPE, /* 11 Power */
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ACPI_NS_NEWSCOPE, /* 12 Processor */
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ACPI_NS_NEWSCOPE, /* 13 Thermal */
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ACPI_NS_NORMAL, /* 14 buffer_field */
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ACPI_NS_NORMAL, /* 15 ddb_handle */
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ACPI_NS_NORMAL, /* 16 Debug Object */
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ACPI_NS_NORMAL, /* 17 def_field */
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ACPI_NS_NORMAL, /* 18 bank_field */
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ACPI_NS_NORMAL, /* 19 index_field */
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ACPI_NS_NORMAL, /* 20 Reference */
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ACPI_NS_NORMAL, /* 21 Alias */
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ACPI_NS_NORMAL, /* 22 method_alias */
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ACPI_NS_NORMAL, /* 23 Notify */
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ACPI_NS_NORMAL, /* 24 Address Handler */
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ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 25 Resource Desc */
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ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 26 Resource Field */
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ACPI_NS_NEWSCOPE, /* 27 Scope */
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ACPI_NS_NORMAL, /* 28 Extra */
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ACPI_NS_NORMAL, /* 29 Data */
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ACPI_NS_NORMAL /* 30 Invalid */
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};
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_hex_to_ascii_char
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*
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* PARAMETERS: Integer - Contains the hex digit
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* Position - bit position of the digit within the
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* integer (multiple of 4)
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*
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* RETURN: The converted Ascii character
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*
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* DESCRIPTION: Convert a hex digit to an Ascii character
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*
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******************************************************************************/
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/* Hex to ASCII conversion table */
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static const char acpi_gbl_hex_to_ascii[] = {
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
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};
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char acpi_ut_hex_to_ascii_char(u64 integer, u32 position)
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{
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return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_region_name
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*
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* PARAMETERS: Space ID - ID for the region
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*
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* RETURN: Decoded region space_id name
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*
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* DESCRIPTION: Translate a Space ID into a name string (Debug only)
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*
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******************************************************************************/
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/* Region type decoding */
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const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
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"SystemMemory",
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"SystemIO",
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"PCI_Config",
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"EmbeddedControl",
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"SMBus",
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"SystemCMOS",
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"PCIBARTarget",
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"IPMI"
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};
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char *acpi_ut_get_region_name(u8 space_id)
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{
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if (space_id >= ACPI_USER_REGION_BEGIN) {
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return ("UserDefinedRegion");
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} else if (space_id == ACPI_ADR_SPACE_DATA_TABLE) {
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return ("DataTable");
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} else if (space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) {
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return ("FunctionalFixedHW");
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} else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
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return ("InvalidSpaceId");
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}
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return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_event_name
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*
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* PARAMETERS: event_id - Fixed event ID
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*
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* RETURN: Decoded event ID name
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*
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* DESCRIPTION: Translate a Event ID into a name string (Debug only)
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*
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******************************************************************************/
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/* Event type decoding */
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static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
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"PM_Timer",
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"GlobalLock",
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"PowerButton",
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"SleepButton",
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"RealTimeClock",
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};
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char *acpi_ut_get_event_name(u32 event_id)
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{
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if (event_id > ACPI_EVENT_MAX) {
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return ("InvalidEventID");
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}
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return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_type_name
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*
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* PARAMETERS: Type - An ACPI object type
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*
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* RETURN: Decoded ACPI object type name
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*
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* DESCRIPTION: Translate a Type ID into a name string (Debug only)
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*
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******************************************************************************/
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/*
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* Elements of acpi_gbl_ns_type_names below must match
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* one-to-one with values of acpi_object_type
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*
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* The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
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* when stored in a table it really means that we have thus far seen no
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* evidence to indicate what type is actually going to be stored for this entry.
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*/
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static const char acpi_gbl_bad_type[] = "UNDEFINED";
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/* Printable names of the ACPI object types */
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static const char *acpi_gbl_ns_type_names[] = {
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/* 00 */ "Untyped",
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/* 01 */ "Integer",
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/* 02 */ "String",
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/* 03 */ "Buffer",
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/* 04 */ "Package",
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/* 05 */ "FieldUnit",
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/* 06 */ "Device",
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/* 07 */ "Event",
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/* 08 */ "Method",
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/* 09 */ "Mutex",
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/* 10 */ "Region",
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/* 11 */ "Power",
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/* 12 */ "Processor",
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/* 13 */ "Thermal",
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/* 14 */ "BufferField",
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/* 15 */ "DdbHandle",
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/* 16 */ "DebugObject",
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/* 17 */ "RegionField",
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/* 18 */ "BankField",
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/* 19 */ "IndexField",
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/* 20 */ "Reference",
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/* 21 */ "Alias",
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/* 22 */ "MethodAlias",
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/* 23 */ "Notify",
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/* 24 */ "AddrHandler",
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/* 25 */ "ResourceDesc",
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/* 26 */ "ResourceFld",
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/* 27 */ "Scope",
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/* 28 */ "Extra",
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/* 29 */ "Data",
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/* 30 */ "Invalid"
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};
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char *acpi_ut_get_type_name(acpi_object_type type)
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{
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if (type > ACPI_TYPE_INVALID) {
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return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
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}
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return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
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}
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char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
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{
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if (!obj_desc) {
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return ("[NULL Object Descriptor]");
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}
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return (acpi_ut_get_type_name(obj_desc->common.type));
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_node_name
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*
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* PARAMETERS: Object - A namespace node
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*
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* RETURN: ASCII name of the node
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*
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* DESCRIPTION: Validate the node and return the node's ACPI name.
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*
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******************************************************************************/
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char *acpi_ut_get_node_name(void *object)
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{
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struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
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/* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
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if (!object) {
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return ("NULL");
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}
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/* Check for Root node */
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if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
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return ("\"\\\" ");
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}
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/* Descriptor must be a namespace node */
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if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
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return ("####");
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}
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/*
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* Ensure name is valid. The name was validated/repaired when the node
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* was created, but make sure it has not been corrupted.
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*/
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acpi_ut_repair_name(node->name.ascii);
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/* Return the name */
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return (node->name.ascii);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_descriptor_name
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*
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* PARAMETERS: Object - An ACPI object
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*
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* RETURN: Decoded name of the descriptor type
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*
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* DESCRIPTION: Validate object and return the descriptor type
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*
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******************************************************************************/
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/* Printable names of object descriptor types */
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static const char *acpi_gbl_desc_type_names[] = {
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/* 00 */ "Not a Descriptor",
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/* 01 */ "Cached",
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/* 02 */ "State-Generic",
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/* 03 */ "State-Update",
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/* 04 */ "State-Package",
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/* 05 */ "State-Control",
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/* 06 */ "State-RootParseScope",
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/* 07 */ "State-ParseScope",
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/* 08 */ "State-WalkScope",
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/* 09 */ "State-Result",
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/* 10 */ "State-Notify",
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/* 11 */ "State-Thread",
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/* 12 */ "Walk",
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/* 13 */ "Parser",
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/* 14 */ "Operand",
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/* 15 */ "Node"
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};
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char *acpi_ut_get_descriptor_name(void *object)
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{
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if (!object) {
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return ("NULL OBJECT");
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}
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if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
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return ("Not a Descriptor");
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}
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return (ACPI_CAST_PTR(char,
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acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
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(object)]));
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_reference_name
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*
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* PARAMETERS: Object - An ACPI reference object
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*
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* RETURN: Decoded name of the type of reference
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*
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* DESCRIPTION: Decode a reference object sub-type to a string.
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*
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******************************************************************************/
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/* Printable names of reference object sub-types */
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static const char *acpi_gbl_ref_class_names[] = {
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/* 00 */ "Local",
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/* 01 */ "Argument",
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/* 02 */ "RefOf",
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/* 03 */ "Index",
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/* 04 */ "DdbHandle",
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/* 05 */ "Named Object",
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/* 06 */ "Debug"
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};
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const char *acpi_ut_get_reference_name(union acpi_operand_object *object)
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{
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if (!object) {
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return ("NULL Object");
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}
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if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
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return ("Not an Operand object");
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}
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if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE) {
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return ("Not a Reference object");
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}
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if (object->reference.class > ACPI_REFCLASS_MAX) {
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return ("Unknown Reference class");
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}
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return (acpi_gbl_ref_class_names[object->reference.class]);
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}
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#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
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/*
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* Strings and procedures used for debug only
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*/
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_mutex_name
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*
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* PARAMETERS: mutex_id - The predefined ID for this mutex.
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*
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* RETURN: Decoded name of the internal mutex
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*
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* DESCRIPTION: Translate a mutex ID into a name string (Debug only)
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*
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******************************************************************************/
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/* Names for internal mutex objects, used for debug output */
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static char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = {
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"ACPI_MTX_Interpreter",
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"ACPI_MTX_Namespace",
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"ACPI_MTX_Tables",
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"ACPI_MTX_Events",
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"ACPI_MTX_Caches",
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"ACPI_MTX_Memory",
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"ACPI_MTX_CommandComplete",
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"ACPI_MTX_CommandReady"
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};
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char *acpi_ut_get_mutex_name(u32 mutex_id)
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{
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if (mutex_id > ACPI_MAX_MUTEX) {
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return ("Invalid Mutex ID");
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}
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return (acpi_gbl_mutex_names[mutex_id]);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_get_notify_name
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*
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* PARAMETERS: notify_value - Value from the Notify() request
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*
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* RETURN: Decoded name for the notify value
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*
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* DESCRIPTION: Translate a Notify Value to a notify namestring.
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*
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******************************************************************************/
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/* Names for Notify() values, used for debug output */
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static const char *acpi_gbl_notify_value_names[] = {
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"Bus Check",
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"Device Check",
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"Device Wake",
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"Eject Request",
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"Device Check Light",
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"Frequency Mismatch",
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"Bus Mode Mismatch",
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"Power Fault",
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"Capabilities Check",
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"Device PLD Check",
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"Reserved",
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"System Locality Update"
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};
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const char *acpi_ut_get_notify_name(u32 notify_value)
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{
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if (notify_value <= ACPI_NOTIFY_MAX) {
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return (acpi_gbl_notify_value_names[notify_value]);
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} else if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
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return ("Reserved");
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} else { /* Greater or equal to 0x80 */
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return ("**Device Specific**");
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}
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}
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#endif
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_valid_object_type
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*
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* PARAMETERS: Type - Object type to be validated
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*
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* RETURN: TRUE if valid object type, FALSE otherwise
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*
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* DESCRIPTION: Validate an object type
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*
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******************************************************************************/
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u8 acpi_ut_valid_object_type(acpi_object_type type)
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{
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if (type > ACPI_TYPE_LOCAL_MAX) {
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/* Note: Assumes all TYPEs are contiguous (external/local) */
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return (FALSE);
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}
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return (TRUE);
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}
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