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Diffstat (limited to 'sys/contrib/dev/acpica/utmisc.c')
| -rw-r--r-- | sys/contrib/dev/acpica/utmisc.c | 1633 |
1 files changed, 1633 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/utmisc.c b/sys/contrib/dev/acpica/utmisc.c new file mode 100644 index 0000000..4862b7d --- /dev/null +++ b/sys/contrib/dev/acpica/utmisc.c @@ -0,0 +1,1633 @@ +/******************************************************************************* + * + * Module Name: utmisc - common utility procedures + * $Revision: 86 $ + * + ******************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp. + * All rights reserved. + * + * 2. License + * + * 2.1. This is your license from Intel Corp. under its intellectual property + * rights. You may have additional license terms from the party that provided + * you this software, covering your right to use that party's intellectual + * property rights. + * + * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a + * copy of the source code appearing in this file ("Covered Code") an + * irrevocable, perpetual, worldwide license under Intel's copyrights in the + * base code distributed originally by Intel ("Original Intel Code") to copy, + * make derivatives, distribute, use and display any portion of the Covered + * Code in any form, with the right to sublicense such rights; and + * + * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent + * license (with the right to sublicense), under only those claims of Intel + * patents that are infringed by the Original Intel Code, to make, use, sell, + * offer to sell, and import the Covered Code and derivative works thereof + * solely to the minimum extent necessary to exercise the above copyright + * license, and in no event shall the patent license extend to any additions + * to or modifications of the Original Intel Code. No other license or right + * is granted directly or by implication, estoppel or otherwise; + * + * The above copyright and patent license is granted only if the following + * conditions are met: + * + * 3. Conditions + * + * 3.1. Redistribution of Source with Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification with rights to further distribute source must include + * the above Copyright Notice, the above License, this list of Conditions, + * and the following Disclaimer and Export Compliance provision. In addition, + * Licensee must cause all Covered Code to which Licensee contributes to + * contain a file documenting the changes Licensee made to create that Covered + * Code and the date of any change. Licensee must include in that file the + * documentation of any changes made by any predecessor Licensee. Licensee + * must include a prominent statement that the modification is derived, + * directly or indirectly, from Original Intel Code. + * + * 3.2. Redistribution of Source with no Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification without rights to further distribute source must + * include the following Disclaimer and Export Compliance provision in the + * documentation and/or other materials provided with distribution. In + * addition, Licensee may not authorize further sublicense of source of any + * portion of the Covered Code, and must include terms to the effect that the + * license from Licensee to its licensee is limited to the intellectual + * property embodied in the software Licensee provides to its licensee, and + * not to intellectual property embodied in modifications its licensee may + * make. + * + * 3.3. Redistribution of Executable. Redistribution in executable form of any + * substantial portion of the Covered Code or modification must reproduce the + * above Copyright Notice, and the following Disclaimer and Export Compliance + * provision in the documentation and/or other materials provided with the + * distribution. + * + * 3.4. Intel retains all right, title, and interest in and to the Original + * Intel Code. + * + * 3.5. Neither the name Intel nor any other trademark owned or controlled by + * Intel shall be used in advertising or otherwise to promote the sale, use or + * other dealings in products derived from or relating to the Covered Code + * without prior written authorization from Intel. + * + * 4. Disclaimer and Export Compliance + * + * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED + * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE + * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, + * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY + * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY + * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A + * PARTICULAR PURPOSE. + * + * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES + * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR + * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, + * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY + * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL + * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS + * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY + * LIMITED REMEDY. + * + * 4.3. Licensee shall not export, either directly or indirectly, any of this + * software or system incorporating such software without first obtaining any + * required license or other approval from the U. S. Department of Commerce or + * any other agency or department of the United States Government. In the + * event Licensee exports any such software from the United States or + * re-exports any such software from a foreign destination, Licensee shall + * ensure that the distribution and export/re-export of the software is in + * compliance with all laws, regulations, orders, or other restrictions of the + * U.S. Export Administration Regulations. Licensee agrees that neither it nor + * any of its subsidiaries will export/re-export any technical data, process, + * software, or service, directly or indirectly, to any country for which the + * United States government or any agency thereof requires an export license, + * other governmental approval, or letter of assurance, without first obtaining + * such license, approval or letter. + * + *****************************************************************************/ + + +#define __UTMISC_C__ + +#include "acpi.h" +#include "acnamesp.h" + + +#define _COMPONENT ACPI_UTILITIES + ACPI_MODULE_NAME ("utmisc") + + +/******************************************************************************* + * + * FUNCTION: AcpiUtPrintString + * + * PARAMETERS: String - Null terminated ASCII string + * + * RETURN: None + * + * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape + * sequences. + * + ******************************************************************************/ + +void +AcpiUtPrintString ( + char *String, + UINT8 MaxLength) +{ + UINT32 i; + + + if (!String) + { + AcpiOsPrintf ("<\"NULL STRING PTR\">"); + return; + } + + AcpiOsPrintf ("\""); + for (i = 0; String[i] && (i < MaxLength); i++) + { + /* Escape sequences */ + + switch (String[i]) + { + case 0x07: + AcpiOsPrintf ("\\a"); /* BELL */ + break; + + case 0x08: + AcpiOsPrintf ("\\b"); /* BACKSPACE */ + break; + + case 0x0C: + AcpiOsPrintf ("\\f"); /* FORMFEED */ + break; + + case 0x0A: + AcpiOsPrintf ("\\n"); /* LINEFEED */ + break; + + case 0x0D: + AcpiOsPrintf ("\\r"); /* CARRIAGE RETURN*/ + break; + + case 0x09: + AcpiOsPrintf ("\\t"); /* HORIZONTAL TAB */ + break; + + case 0x0B: + AcpiOsPrintf ("\\v"); /* VERTICAL TAB */ + break; + + case '\'': /* Single Quote */ + case '\"': /* Double Quote */ + case '\\': /* Backslash */ + AcpiOsPrintf ("\\%c", (int) String[i]); + break; + + default: + + /* Check for printable character or hex escape */ + + if (ACPI_IS_PRINT (String[i])) + { + /* This is a normal character */ + + AcpiOsPrintf ("%c", (int) String[i]); + } + else + { + /* All others will be Hex escapes */ + + AcpiOsPrintf ("\\x%2.2X", (INT32) String[i]); + } + break; + } + } + AcpiOsPrintf ("\""); + + if (i == MaxLength && String[i]) + { + AcpiOsPrintf ("..."); + } +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtDwordByteSwap + * + * PARAMETERS: Value - Value to be converted + * + * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes) + * + ******************************************************************************/ + +UINT32 +AcpiUtDwordByteSwap ( + UINT32 Value) +{ + union + { + UINT32 Value; + UINT8 Bytes[4]; + } Out; + + union + { + UINT32 Value; + UINT8 Bytes[4]; + } In; + + + ACPI_FUNCTION_ENTRY (); + + + In.Value = Value; + + Out.Bytes[0] = In.Bytes[3]; + Out.Bytes[1] = In.Bytes[2]; + Out.Bytes[2] = In.Bytes[1]; + Out.Bytes[3] = In.Bytes[0]; + + return (Out.Value); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtSetIntegerWidth + * + * PARAMETERS: Revision From DSDT header + * + * RETURN: None + * + * DESCRIPTION: Set the global integer bit width based upon the revision + * of the DSDT. For Revision 1 and 0, Integers are 32 bits. + * For Revision 2 and above, Integers are 64 bits. Yes, this + * makes a difference. + * + ******************************************************************************/ + +void +AcpiUtSetIntegerWidth ( + UINT8 Revision) +{ + + if (Revision <= 1) + { + AcpiGbl_IntegerBitWidth = 32; + AcpiGbl_IntegerByteWidth = 4; + } + else + { + AcpiGbl_IntegerBitWidth = 64; + AcpiGbl_IntegerByteWidth = 8; + } +} + + +#ifdef ACPI_DEBUG_OUTPUT +/******************************************************************************* + * + * FUNCTION: AcpiUtDisplayInitPathname + * + * PARAMETERS: ObjHandle - Handle whose pathname will be displayed + * Path - Additional path string to be appended + * + * RETURN: ACPI_STATUS + * + * DESCRIPTION: Display full pathnbame of an object, DEBUG ONLY + * + ******************************************************************************/ + +void +AcpiUtDisplayInitPathname ( + ACPI_HANDLE ObjHandle, + char *Path) +{ + ACPI_STATUS Status; + ACPI_BUFFER Buffer; + + + ACPI_FUNCTION_NAME ("UtDisplayInitPathname"); + + + Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; + + Status = AcpiNsHandleToPathname (ObjHandle, &Buffer); + if (ACPI_SUCCESS (Status)) + { + if (Path) + { + ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "%s.%s\n", (char *) Buffer.Pointer, Path)); + } + else + { + ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "%s\n", (char *) Buffer.Pointer)); + } + + ACPI_MEM_FREE (Buffer.Pointer); + } +} +#endif + + +/******************************************************************************* + * + * FUNCTION: AcpiUtValidAcpiName + * + * PARAMETERS: Character - The character to be examined + * + * RETURN: 1 if Character may appear in a name, else 0 + * + * DESCRIPTION: Check for a valid ACPI name. Each character must be one of: + * 1) Upper case alpha + * 2) numeric + * 3) underscore + * + ******************************************************************************/ + +BOOLEAN +AcpiUtValidAcpiName ( + UINT32 Name) +{ + NATIVE_CHAR *NamePtr = (NATIVE_CHAR *) &Name; + UINT32 i; + + + ACPI_FUNCTION_ENTRY (); + + + for (i = 0; i < ACPI_NAME_SIZE; i++) + { + if (!((NamePtr[i] == '_') || + (NamePtr[i] >= 'A' && NamePtr[i] <= 'Z') || + (NamePtr[i] >= '0' && NamePtr[i] <= '9'))) + { + return (FALSE); + } + } + + return (TRUE); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtValidAcpiCharacter + * + * PARAMETERS: Character - The character to be examined + * + * RETURN: 1 if Character may appear in a name, else 0 + * + * DESCRIPTION: Check for a printable character + * + ******************************************************************************/ + +BOOLEAN +AcpiUtValidAcpiCharacter ( + NATIVE_CHAR Character) +{ + + ACPI_FUNCTION_ENTRY (); + + return ((BOOLEAN) ((Character == '_') || + (Character >= 'A' && Character <= 'Z') || + (Character >= '0' && Character <= '9'))); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtStrtoul64 + * + * PARAMETERS: String - Null terminated string + * Terminater - Where a pointer to the terminating byte is returned + * Base - Radix of the string + * + * RETURN: Converted value + * + * DESCRIPTION: Convert a string into an unsigned value. + * + ******************************************************************************/ +#define NEGATIVE 1 +#define POSITIVE 0 + +ACPI_STATUS +AcpiUtStrtoul64 ( + NATIVE_CHAR *String, + UINT32 Base, + ACPI_INTEGER *RetInteger) +{ + UINT32 Index; + ACPI_INTEGER ReturnValue = 0; + ACPI_STATUS Status = AE_OK; + ACPI_INTEGER Dividend; + ACPI_INTEGER Quotient; + + + *RetInteger = 0; + + switch (Base) + { + case 0: + case 8: + case 10: + case 16: + break; + + default: + /* + * The specified Base parameter is not in the domain of + * this function: + */ + return (AE_BAD_PARAMETER); + } + + /* + * skip over any white space in the buffer: + */ + while (ACPI_IS_SPACE (*String) || *String == '\t') + { + ++String; + } + + /* + * If the input parameter Base is zero, then we need to + * determine if it is octal, decimal, or hexadecimal: + */ + if (Base == 0) + { + if (*String == '0') + { + if (ACPI_TOLOWER (*(++String)) == 'x') + { + Base = 16; + ++String; + } + else + { + Base = 8; + } + } + else + { + Base = 10; + } + } + + /* + * For octal and hexadecimal bases, skip over the leading + * 0 or 0x, if they are present. + */ + if (Base == 8 && *String == '0') + { + String++; + } + + if (Base == 16 && + *String == '0' && + ACPI_TOLOWER (*(++String)) == 'x') + { + String++; + } + + /* Main loop: convert the string to an unsigned long */ + + while (*String) + { + if (ACPI_IS_DIGIT (*String)) + { + Index = ((UINT8) *String) - '0'; + } + else + { + Index = (UINT8) ACPI_TOUPPER (*String); + if (ACPI_IS_UPPER ((char) Index)) + { + Index = Index - 'A' + 10; + } + else + { + goto ErrorExit; + } + } + + if (Index >= Base) + { + goto ErrorExit; + } + + /* Check to see if value is out of range: */ + + Dividend = ACPI_INTEGER_MAX - (ACPI_INTEGER) Index; + (void) AcpiUtShortDivide (&Dividend, Base, &Quotient, NULL); + if (ReturnValue > Quotient) + { + goto ErrorExit; + } + + ReturnValue *= Base; + ReturnValue += Index; + ++String; + } + + *RetInteger = ReturnValue; + return (Status); + + +ErrorExit: + switch (Base) + { + case 8: + Status = AE_BAD_OCTAL_CONSTANT; + break; + + case 10: + Status = AE_BAD_DECIMAL_CONSTANT; + break; + + case 16: + Status = AE_BAD_HEX_CONSTANT; + break; + + default: + /* Base validated above */ + break; + } + + return (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtStrupr + * + * PARAMETERS: SrcString - The source string to convert to + * + * RETURN: SrcString + * + * DESCRIPTION: Convert string to uppercase + * + ******************************************************************************/ + +NATIVE_CHAR * +AcpiUtStrupr ( + NATIVE_CHAR *SrcString) +{ + NATIVE_CHAR *String; + + + ACPI_FUNCTION_ENTRY (); + + + /* Walk entire string, uppercasing the letters */ + + for (String = SrcString; *String; ) + { + *String = (char) ACPI_TOUPPER (*String); + String++; + } + + + return (SrcString); +} + +/******************************************************************************* + * + * FUNCTION: AcpiUtMutexInitialize + * + * PARAMETERS: None. + * + * RETURN: Status + * + * DESCRIPTION: Create the system mutex objects. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtMutexInitialize ( + void) +{ + UINT32 i; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE ("UtMutexInitialize"); + + + /* + * Create each of the predefined mutex objects + */ + for (i = 0; i < NUM_MTX; i++) + { + Status = AcpiUtCreateMutex (i); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtMutexTerminate + * + * PARAMETERS: None. + * + * RETURN: None. + * + * DESCRIPTION: Delete all of the system mutex objects. + * + ******************************************************************************/ + +void +AcpiUtMutexTerminate ( + void) +{ + UINT32 i; + + + ACPI_FUNCTION_TRACE ("UtMutexTerminate"); + + + /* + * Delete each predefined mutex object + */ + for (i = 0; i < NUM_MTX; i++) + { + (void) AcpiUtDeleteMutex (i); + } + + return_VOID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreateMutex + * + * PARAMETERS: MutexID - ID of the mutex to be created + * + * RETURN: Status + * + * DESCRIPTION: Create a mutex object. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtCreateMutex ( + ACPI_MUTEX_HANDLE MutexId) +{ + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE_U32 ("UtCreateMutex", MutexId); + + + if (MutexId > MAX_MTX) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + + if (!AcpiGbl_AcpiMutexInfo[MutexId].Mutex) + { + Status = AcpiOsCreateSemaphore (1, 1, + &AcpiGbl_AcpiMutexInfo[MutexId].Mutex); + AcpiGbl_AcpiMutexInfo[MutexId].OwnerId = ACPI_MUTEX_NOT_ACQUIRED; + AcpiGbl_AcpiMutexInfo[MutexId].UseCount = 0; + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtDeleteMutex + * + * PARAMETERS: MutexID - ID of the mutex to be deleted + * + * RETURN: Status + * + * DESCRIPTION: Delete a mutex object. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtDeleteMutex ( + ACPI_MUTEX_HANDLE MutexId) +{ + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE_U32 ("UtDeleteMutex", MutexId); + + + if (MutexId > MAX_MTX) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + + Status = AcpiOsDeleteSemaphore (AcpiGbl_AcpiMutexInfo[MutexId].Mutex); + + AcpiGbl_AcpiMutexInfo[MutexId].Mutex = NULL; + AcpiGbl_AcpiMutexInfo[MutexId].OwnerId = ACPI_MUTEX_NOT_ACQUIRED; + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtAcquireMutex + * + * PARAMETERS: MutexID - ID of the mutex to be acquired + * + * RETURN: Status + * + * DESCRIPTION: Acquire a mutex object. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtAcquireMutex ( + ACPI_MUTEX_HANDLE MutexId) +{ + ACPI_STATUS Status; + UINT32 i; + UINT32 ThisThreadId; + + + ACPI_FUNCTION_NAME ("UtAcquireMutex"); + + + if (MutexId > MAX_MTX) + { + return (AE_BAD_PARAMETER); + } + + + ThisThreadId = AcpiOsGetThreadId (); + + /* + * Deadlock prevention. Check if this thread owns any mutexes of value + * greater than or equal to this one. If so, the thread has violated + * the mutex ordering rule. This indicates a coding error somewhere in + * the ACPI subsystem code. + */ + for (i = MutexId; i < MAX_MTX; i++) + { + if (AcpiGbl_AcpiMutexInfo[i].OwnerId == ThisThreadId) + { + if (i == MutexId) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Mutex [%s] already acquired by this thread [%X]\n", + AcpiUtGetMutexName (MutexId), ThisThreadId)); + + return (AE_ALREADY_ACQUIRED); + } + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Invalid acquire order: Thread %X owns [%s], wants [%s]\n", + ThisThreadId, AcpiUtGetMutexName (i), + AcpiUtGetMutexName (MutexId))); + + return (AE_ACQUIRE_DEADLOCK); + } + } + + + ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, + "Thread %X attempting to acquire Mutex [%s]\n", + ThisThreadId, AcpiUtGetMutexName (MutexId))); + + Status = AcpiOsWaitSemaphore (AcpiGbl_AcpiMutexInfo[MutexId].Mutex, + 1, ACPI_WAIT_FOREVER); + if (ACPI_SUCCESS (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X acquired Mutex [%s]\n", + ThisThreadId, AcpiUtGetMutexName (MutexId))); + + AcpiGbl_AcpiMutexInfo[MutexId].UseCount++; + AcpiGbl_AcpiMutexInfo[MutexId].OwnerId = ThisThreadId; + } + + else + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Thread %X could not acquire Mutex [%s] %s\n", + ThisThreadId, AcpiUtGetMutexName (MutexId), + AcpiFormatException (Status))); + } + + return (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtReleaseMutex + * + * PARAMETERS: MutexID - ID of the mutex to be released + * + * RETURN: Status + * + * DESCRIPTION: Release a mutex object. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtReleaseMutex ( + ACPI_MUTEX_HANDLE MutexId) +{ + ACPI_STATUS Status; + UINT32 i; + UINT32 ThisThreadId; + + + ACPI_FUNCTION_NAME ("UtReleaseMutex"); + + + ThisThreadId = AcpiOsGetThreadId (); + ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, + "Thread %X releasing Mutex [%s]\n", ThisThreadId, + AcpiUtGetMutexName (MutexId))); + + if (MutexId > MAX_MTX) + { + return (AE_BAD_PARAMETER); + } + + + /* + * Mutex must be acquired in order to release it! + */ + if (AcpiGbl_AcpiMutexInfo[MutexId].OwnerId == ACPI_MUTEX_NOT_ACQUIRED) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Mutex [%s] is not acquired, cannot release\n", + AcpiUtGetMutexName (MutexId))); + + return (AE_NOT_ACQUIRED); + } + + + /* + * Deadlock prevention. Check if this thread owns any mutexes of value + * greater than this one. If so, the thread has violated the mutex + * ordering rule. This indicates a coding error somewhere in + * the ACPI subsystem code. + */ + for (i = MutexId; i < MAX_MTX; i++) + { + if (AcpiGbl_AcpiMutexInfo[i].OwnerId == ThisThreadId) + { + if (i == MutexId) + { + continue; + } + + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, + "Invalid release order: owns [%s], releasing [%s]\n", + AcpiUtGetMutexName (i), AcpiUtGetMutexName (MutexId))); + + return (AE_RELEASE_DEADLOCK); + } + } + + + /* Mark unlocked FIRST */ + + AcpiGbl_AcpiMutexInfo[MutexId].OwnerId = ACPI_MUTEX_NOT_ACQUIRED; + + Status = AcpiOsSignalSemaphore (AcpiGbl_AcpiMutexInfo[MutexId].Mutex, 1); + + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Thread %X could not release Mutex [%s] %s\n", + ThisThreadId, AcpiUtGetMutexName (MutexId), + AcpiFormatException (Status))); + } + else + { + ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X released Mutex [%s]\n", + ThisThreadId, AcpiUtGetMutexName (MutexId))); + } + + return (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreateUpdateStateAndPush + * + * PARAMETERS: *Object - Object to be added to the new state + * Action - Increment/Decrement + * StateList - List the state will be added to + * + * RETURN: None + * + * DESCRIPTION: Create a new state and push it + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtCreateUpdateStateAndPush ( + ACPI_OPERAND_OBJECT *Object, + UINT16 Action, + ACPI_GENERIC_STATE **StateList) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_ENTRY (); + + + /* Ignore null objects; these are expected */ + + if (!Object) + { + return (AE_OK); + } + + State = AcpiUtCreateUpdateState (Object, Action); + if (!State) + { + return (AE_NO_MEMORY); + } + + + AcpiUtPushGenericState (StateList, State); + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreatePkgStateAndPush + * + * PARAMETERS: *Object - Object to be added to the new state + * Action - Increment/Decrement + * StateList - List the state will be added to + * + * RETURN: None + * + * DESCRIPTION: Create a new state and push it + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtCreatePkgStateAndPush ( + void *InternalObject, + void *ExternalObject, + UINT16 Index, + ACPI_GENERIC_STATE **StateList) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_ENTRY (); + + + State = AcpiUtCreatePkgState (InternalObject, ExternalObject, Index); + if (!State) + { + return (AE_NO_MEMORY); + } + + + AcpiUtPushGenericState (StateList, State); + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtPushGenericState + * + * PARAMETERS: ListHead - Head of the state stack + * State - State object to push + * + * RETURN: Status + * + * DESCRIPTION: Push a state object onto a state stack + * + ******************************************************************************/ + +void +AcpiUtPushGenericState ( + ACPI_GENERIC_STATE **ListHead, + ACPI_GENERIC_STATE *State) +{ + ACPI_FUNCTION_TRACE ("UtPushGenericState"); + + + /* Push the state object onto the front of the list (stack) */ + + State->Common.Next = *ListHead; + *ListHead = State; + + return_VOID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtPopGenericState + * + * PARAMETERS: ListHead - Head of the state stack + * + * RETURN: Status + * + * DESCRIPTION: Pop a state object from a state stack + * + ******************************************************************************/ + +ACPI_GENERIC_STATE * +AcpiUtPopGenericState ( + ACPI_GENERIC_STATE **ListHead) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_TRACE ("UtPopGenericState"); + + + /* Remove the state object at the head of the list (stack) */ + + State = *ListHead; + if (State) + { + /* Update the list head */ + + *ListHead = State->Common.Next; + } + + return_PTR (State); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreateGenericState + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Create a generic state object. Attempt to obtain one from + * the global state cache; If none available, create a new one. + * + ******************************************************************************/ + +ACPI_GENERIC_STATE * +AcpiUtCreateGenericState (void) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_ENTRY (); + + + State = AcpiUtAcquireFromCache (ACPI_MEM_LIST_STATE); + + /* Initialize */ + + if (State) + { + State->Common.DataType = ACPI_DESC_TYPE_STATE; + } + + return (State); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreateThreadState + * + * PARAMETERS: None + * + * RETURN: Thread State + * + * DESCRIPTION: Create a "Thread State" - a flavor of the generic state used + * to track per-thread info during method execution + * + ******************************************************************************/ + +ACPI_THREAD_STATE * +AcpiUtCreateThreadState ( + void) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_TRACE ("UtCreateThreadState"); + + + /* Create the generic state object */ + + State = AcpiUtCreateGenericState (); + if (!State) + { + return_PTR (NULL); + } + + /* Init fields specific to the update struct */ + + State->Common.DataType = ACPI_DESC_TYPE_STATE_THREAD; + State->Thread.ThreadId = AcpiOsGetThreadId (); + + return_PTR ((ACPI_THREAD_STATE *) State); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreateUpdateState + * + * PARAMETERS: Object - Initial Object to be installed in the + * state + * Action - Update action to be performed + * + * RETURN: Status + * + * DESCRIPTION: Create an "Update State" - a flavor of the generic state used + * to update reference counts and delete complex objects such + * as packages. + * + ******************************************************************************/ + +ACPI_GENERIC_STATE * +AcpiUtCreateUpdateState ( + ACPI_OPERAND_OBJECT *Object, + UINT16 Action) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_TRACE_PTR ("UtCreateUpdateState", Object); + + + /* Create the generic state object */ + + State = AcpiUtCreateGenericState (); + if (!State) + { + return_PTR (NULL); + } + + /* Init fields specific to the update struct */ + + State->Common.DataType = ACPI_DESC_TYPE_STATE_UPDATE; + State->Update.Object = Object; + State->Update.Value = Action; + + return_PTR (State); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreatePkgState + * + * PARAMETERS: Object - Initial Object to be installed in the + * state + * Action - Update action to be performed + * + * RETURN: Status + * + * DESCRIPTION: Create a "Package State" + * + ******************************************************************************/ + +ACPI_GENERIC_STATE * +AcpiUtCreatePkgState ( + void *InternalObject, + void *ExternalObject, + UINT16 Index) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_TRACE_PTR ("UtCreatePkgState", InternalObject); + + + /* Create the generic state object */ + + State = AcpiUtCreateGenericState (); + if (!State) + { + return_PTR (NULL); + } + + /* Init fields specific to the update struct */ + + State->Common.DataType = ACPI_DESC_TYPE_STATE_PACKAGE; + State->Pkg.SourceObject = (ACPI_OPERAND_OBJECT *) InternalObject; + State->Pkg.DestObject = ExternalObject; + State->Pkg.Index = Index; + State->Pkg.NumPackages = 1; + + return_PTR (State); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtCreateControlState + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Create a "Control State" - a flavor of the generic state used + * to support nested IF/WHILE constructs in the AML. + * + ******************************************************************************/ + +ACPI_GENERIC_STATE * +AcpiUtCreateControlState ( + void) +{ + ACPI_GENERIC_STATE *State; + + + ACPI_FUNCTION_TRACE ("UtCreateControlState"); + + + /* Create the generic state object */ + + State = AcpiUtCreateGenericState (); + if (!State) + { + return_PTR (NULL); + } + + + /* Init fields specific to the control struct */ + + State->Common.DataType = ACPI_DESC_TYPE_STATE_CONTROL; + State->Common.State = ACPI_CONTROL_CONDITIONAL_EXECUTING; + + return_PTR (State); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtDeleteGenericState + * + * PARAMETERS: State - The state object to be deleted + * + * RETURN: Status + * + * DESCRIPTION: Put a state object back into the global state cache. The object + * is not actually freed at this time. + * + ******************************************************************************/ + +void +AcpiUtDeleteGenericState ( + ACPI_GENERIC_STATE *State) +{ + ACPI_FUNCTION_TRACE ("UtDeleteGenericState"); + + + AcpiUtReleaseToCache (ACPI_MEM_LIST_STATE, State); + return_VOID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtDeleteGenericStateCache + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Purge the global state object cache. Used during subsystem + * termination. + * + ******************************************************************************/ + +void +AcpiUtDeleteGenericStateCache ( + void) +{ + ACPI_FUNCTION_TRACE ("UtDeleteGenericStateCache"); + + + AcpiUtDeleteGenericCache (ACPI_MEM_LIST_STATE); + return_VOID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtWalkPackageTree + * + * PARAMETERS: ObjDesc - The Package object on which to resolve refs + * + * RETURN: Status + * + * DESCRIPTION: Walk through a package + * + ******************************************************************************/ + +ACPI_STATUS +AcpiUtWalkPackageTree ( + ACPI_OPERAND_OBJECT *SourceObject, + void *TargetObject, + ACPI_PKG_CALLBACK WalkCallback, + void *Context) +{ + ACPI_STATUS Status = AE_OK; + ACPI_GENERIC_STATE *StateList = NULL; + ACPI_GENERIC_STATE *State; + UINT32 ThisIndex; + ACPI_OPERAND_OBJECT *ThisSourceObj; + + + ACPI_FUNCTION_TRACE ("UtWalkPackageTree"); + + + State = AcpiUtCreatePkgState (SourceObject, TargetObject, 0); + if (!State) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + while (State) + { + ThisIndex = State->Pkg.Index; + ThisSourceObj = (ACPI_OPERAND_OBJECT *) + State->Pkg.SourceObject->Package.Elements[ThisIndex]; + + /* + * Check for: + * 1) An uninitialized package element. It is completely + * legal to declare a package and leave it uninitialized + * 2) Not an internal object - can be a namespace node instead + * 3) Any type other than a package. Packages are handled in else + * case below. + */ + if ((!ThisSourceObj) || + (ACPI_GET_DESCRIPTOR_TYPE (ThisSourceObj) != ACPI_DESC_TYPE_OPERAND) || + (ACPI_GET_OBJECT_TYPE (ThisSourceObj) != ACPI_TYPE_PACKAGE)) + { + Status = WalkCallback (ACPI_COPY_TYPE_SIMPLE, ThisSourceObj, + State, Context); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + State->Pkg.Index++; + while (State->Pkg.Index >= State->Pkg.SourceObject->Package.Count) + { + /* + * We've handled all of the objects at this level, This means + * that we have just completed a package. That package may + * have contained one or more packages itself. + * + * Delete this state and pop the previous state (package). + */ + AcpiUtDeleteGenericState (State); + State = AcpiUtPopGenericState (&StateList); + + /* Finished when there are no more states */ + + if (!State) + { + /* + * We have handled all of the objects in the top level + * package just add the length of the package objects + * and exit + */ + return_ACPI_STATUS (AE_OK); + } + + /* + * Go back up a level and move the index past the just + * completed package object. + */ + State->Pkg.Index++; + } + } + else + { + /* This is a subobject of type package */ + + Status = WalkCallback (ACPI_COPY_TYPE_PACKAGE, ThisSourceObj, + State, Context); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* + * Push the current state and create a new one + * The callback above returned a new target package object. + */ + AcpiUtPushGenericState (&StateList, State); + State = AcpiUtCreatePkgState (ThisSourceObj, + State->Pkg.ThisTargetObj, 0); + if (!State) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + } + } + + /* We should never get here */ + + return_ACPI_STATUS (AE_AML_INTERNAL); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtGenerateChecksum + * + * PARAMETERS: Buffer - Buffer to be scanned + * Length - number of bytes to examine + * + * RETURN: checksum + * + * DESCRIPTION: Generate a checksum on a raw buffer + * + ******************************************************************************/ + +UINT8 +AcpiUtGenerateChecksum ( + UINT8 *Buffer, + UINT32 Length) +{ + UINT32 i; + signed char Sum = 0; + + for (i = 0; i < Length; i++) + { + Sum = (signed char) (Sum + Buffer[i]); + } + + return ((UINT8) (0 - Sum)); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtGetResourceEndTag + * + * PARAMETERS: ObjDesc - The resource template buffer object + * + * RETURN: Pointer to the end tag + * + * DESCRIPTION: Find the END_TAG resource descriptor in a resource template + * + ******************************************************************************/ + + +UINT8 * +AcpiUtGetResourceEndTag ( + ACPI_OPERAND_OBJECT *ObjDesc) +{ + UINT8 BufferByte; + UINT8 *Buffer; + UINT8 *EndBuffer; + + + Buffer = ObjDesc->Buffer.Pointer; + EndBuffer = Buffer + ObjDesc->Buffer.Length; + + while (Buffer < EndBuffer) + { + BufferByte = *Buffer; + if (BufferByte & ACPI_RDESC_TYPE_MASK) + { + /* Large Descriptor - Length is next 2 bytes */ + + Buffer += ((*(Buffer+1) | (*(Buffer+2) << 8)) + 3); + } + else + { + /* Small Descriptor. End Tag will be found here */ + + if ((BufferByte & ACPI_RDESC_SMALL_MASK) == ACPI_RDESC_TYPE_END_TAG) + { + /* Found the end tag descriptor, all done. */ + + return (Buffer); + } + + /* Length is in the header */ + + Buffer += ((BufferByte & 0x07) + 1); + } + } + + /* End tag not found */ + + return (NULL); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtReportError + * + * PARAMETERS: ModuleName - Caller's module name (for error output) + * LineNumber - Caller's line number (for error output) + * ComponentId - Caller's component ID (for error output) + * Message - Error message to use on failure + * + * RETURN: None + * + * DESCRIPTION: Print error message + * + ******************************************************************************/ + +void +AcpiUtReportError ( + NATIVE_CHAR *ModuleName, + UINT32 LineNumber, + UINT32 ComponentId) +{ + + + AcpiOsPrintf ("%8s-%04d: *** Error: ", ModuleName, LineNumber); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtReportWarning + * + * PARAMETERS: ModuleName - Caller's module name (for error output) + * LineNumber - Caller's line number (for error output) + * ComponentId - Caller's component ID (for error output) + * Message - Error message to use on failure + * + * RETURN: None + * + * DESCRIPTION: Print warning message + * + ******************************************************************************/ + +void +AcpiUtReportWarning ( + NATIVE_CHAR *ModuleName, + UINT32 LineNumber, + UINT32 ComponentId) +{ + + AcpiOsPrintf ("%8s-%04d: *** Warning: ", ModuleName, LineNumber); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiUtReportInfo + * + * PARAMETERS: ModuleName - Caller's module name (for error output) + * LineNumber - Caller's line number (for error output) + * ComponentId - Caller's component ID (for error output) + * Message - Error message to use on failure + * + * RETURN: None + * + * DESCRIPTION: Print information message + * + ******************************************************************************/ + +void +AcpiUtReportInfo ( + NATIVE_CHAR *ModuleName, + UINT32 LineNumber, + UINT32 ComponentId) +{ + + AcpiOsPrintf ("%8s-%04d: *** Info: ", ModuleName, LineNumber); +} + + + |
