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Diffstat (limited to 'sys/contrib/dev/acpica/dsmethod.c')
| -rw-r--r-- | sys/contrib/dev/acpica/dsmethod.c | 754 |
1 files changed, 0 insertions, 754 deletions
diff --git a/sys/contrib/dev/acpica/dsmethod.c b/sys/contrib/dev/acpica/dsmethod.c deleted file mode 100644 index 514f3a1..0000000 --- a/sys/contrib/dev/acpica/dsmethod.c +++ /dev/null @@ -1,754 +0,0 @@ -/****************************************************************************** - * - * Module Name: dsmethod - Parser/Interpreter interface - control method parsing - * $Revision: 1.136 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, 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 __DSMETHOD_C__ - -#include <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acparser.h> -#include <contrib/dev/acpica/amlcode.h> -#include <contrib/dev/acpica/acdispat.h> -#include <contrib/dev/acpica/acinterp.h> -#include <contrib/dev/acpica/acnamesp.h> -#include <contrib/dev/acpica/acdisasm.h> - - -#define _COMPONENT ACPI_DISPATCHER - ACPI_MODULE_NAME ("dsmethod") - -/* Local prototypes */ - -static ACPI_STATUS -AcpiDsCreateMethodMutex ( - ACPI_OPERAND_OBJECT *MethodDesc); - - -/******************************************************************************* - * - * FUNCTION: AcpiDsMethodError - * - * PARAMETERS: Status - Execution status - * WalkState - Current state - * - * RETURN: Status - * - * DESCRIPTION: Called on method error. Invoke the global exception handler if - * present, dump the method data if the disassembler is configured - * - * Note: Allows the exception handler to change the status code - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsMethodError ( - ACPI_STATUS Status, - ACPI_WALK_STATE *WalkState) -{ - ACPI_FUNCTION_ENTRY (); - - - /* Ignore AE_OK and control exception codes */ - - if (ACPI_SUCCESS (Status) || - (Status & AE_CODE_CONTROL)) - { - return (Status); - } - - /* Invoke the global exception handler */ - - if (AcpiGbl_ExceptionHandler) - { - /* Exit the interpreter, allow handler to execute methods */ - - AcpiExExitInterpreter (); - - /* - * Handler can map the exception code to anything it wants, including - * AE_OK, in which case the executing method will not be aborted. - */ - Status = AcpiGbl_ExceptionHandler (Status, - WalkState->MethodNode ? - WalkState->MethodNode->Name.Integer : 0, - WalkState->Opcode, WalkState->AmlOffset, NULL); - (void) AcpiExEnterInterpreter (); - } - -#ifdef ACPI_DISASSEMBLER - if (ACPI_FAILURE (Status)) - { - /* Display method locals/args if disassembler is present */ - - AcpiDmDumpMethodInfo (Status, WalkState, WalkState->Op); - } -#endif - - return (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsCreateMethodMutex - * - * PARAMETERS: ObjDesc - The method object - * - * RETURN: Status - * - * DESCRIPTION: Create a mutex object for a serialized control method - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiDsCreateMethodMutex ( - ACPI_OPERAND_OBJECT *MethodDesc) -{ - ACPI_OPERAND_OBJECT *MutexDesc; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (DsCreateMethodMutex); - - - /* Create the new mutex object */ - - MutexDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX); - if (!MutexDesc) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* Create the actual OS Mutex */ - - Status = AcpiOsCreateMutex (&MutexDesc->Mutex.OsMutex); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - MutexDesc->Mutex.SyncLevel = MethodDesc->Method.SyncLevel; - MethodDesc->Method.Mutex = MutexDesc; - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsBeginMethodExecution - * - * PARAMETERS: MethodNode - Node of the method - * ObjDesc - The method object - * WalkState - current state, NULL if not yet executing - * a method. - * - * RETURN: Status - * - * DESCRIPTION: Prepare a method for execution. Parses the method if necessary, - * increments the thread count, and waits at the method semaphore - * for clearance to execute. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsBeginMethodExecution ( - ACPI_NAMESPACE_NODE *MethodNode, - ACPI_OPERAND_OBJECT *ObjDesc, - ACPI_WALK_STATE *WalkState) -{ - ACPI_STATUS Status = AE_OK; - - - ACPI_FUNCTION_TRACE_PTR (DsBeginMethodExecution, MethodNode); - - - if (!MethodNode) - { - return_ACPI_STATUS (AE_NULL_ENTRY); - } - - /* Prevent wraparound of thread count */ - - if (ObjDesc->Method.ThreadCount == ACPI_UINT8_MAX) - { - ACPI_ERROR ((AE_INFO, - "Method reached maximum reentrancy limit (255)")); - return_ACPI_STATUS (AE_AML_METHOD_LIMIT); - } - - /* - * If this method is serialized, we need to acquire the method mutex. - */ - if (ObjDesc->Method.MethodFlags & AML_METHOD_SERIALIZED) - { - /* - * Create a mutex for the method if it is defined to be Serialized - * and a mutex has not already been created. We defer the mutex creation - * until a method is actually executed, to minimize the object count - */ - if (!ObjDesc->Method.Mutex) - { - Status = AcpiDsCreateMethodMutex (ObjDesc); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - } - - /* - * The CurrentSyncLevel (per-thread) must be less than or equal to - * the sync level of the method. This mechanism provides some - * deadlock prevention - * - * Top-level method invocation has no walk state at this point - */ - if (WalkState && - (WalkState->Thread->CurrentSyncLevel > ObjDesc->Method.Mutex->Mutex.SyncLevel)) - { - ACPI_ERROR ((AE_INFO, - "Cannot acquire Mutex for method [%4.4s], current SyncLevel is too large (%d)", - AcpiUtGetNodeName (MethodNode), - WalkState->Thread->CurrentSyncLevel)); - - return_ACPI_STATUS (AE_AML_MUTEX_ORDER); - } - - /* - * Obtain the method mutex if necessary. Do not acquire mutex for a - * recursive call. - */ - if (!WalkState || - !ObjDesc->Method.Mutex->Mutex.ThreadId || - (WalkState->Thread->ThreadId != ObjDesc->Method.Mutex->Mutex.ThreadId)) - { - /* - * Acquire the method mutex. This releases the interpreter if we - * block (and reacquires it before it returns) - */ - Status = AcpiExSystemWaitMutex (ObjDesc->Method.Mutex->Mutex.OsMutex, - ACPI_WAIT_FOREVER); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Update the mutex and walk info and save the original SyncLevel */ - - if (WalkState) - { - ObjDesc->Method.Mutex->Mutex.OriginalSyncLevel = - WalkState->Thread->CurrentSyncLevel; - - ObjDesc->Method.Mutex->Mutex.ThreadId = WalkState->Thread->ThreadId; - WalkState->Thread->CurrentSyncLevel = ObjDesc->Method.SyncLevel; - } - else - { - ObjDesc->Method.Mutex->Mutex.OriginalSyncLevel = - ObjDesc->Method.Mutex->Mutex.SyncLevel; - } - } - - /* Always increase acquisition depth */ - - ObjDesc->Method.Mutex->Mutex.AcquisitionDepth++; - } - - /* - * Allocate an Owner ID for this method, only if this is the first thread - * to begin concurrent execution. We only need one OwnerId, even if the - * method is invoked recursively. - */ - if (!ObjDesc->Method.OwnerId) - { - Status = AcpiUtAllocateOwnerId (&ObjDesc->Method.OwnerId); - if (ACPI_FAILURE (Status)) - { - goto Cleanup; - } - } - - /* - * Increment the method parse tree thread count since it has been - * reentered one more time (even if it is the same thread) - */ - ObjDesc->Method.ThreadCount++; - return_ACPI_STATUS (Status); - - -Cleanup: - /* On error, must release the method mutex (if present) */ - - if (ObjDesc->Method.Mutex) - { - AcpiOsReleaseMutex (ObjDesc->Method.Mutex->Mutex.OsMutex); - } - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsCallControlMethod - * - * PARAMETERS: Thread - Info for this thread - * ThisWalkState - Current walk state - * Op - Current Op to be walked - * - * RETURN: Status - * - * DESCRIPTION: Transfer execution to a called control method - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsCallControlMethod ( - ACPI_THREAD_STATE *Thread, - ACPI_WALK_STATE *ThisWalkState, - ACPI_PARSE_OBJECT *Op) -{ - ACPI_STATUS Status; - ACPI_NAMESPACE_NODE *MethodNode; - ACPI_WALK_STATE *NextWalkState = NULL; - ACPI_OPERAND_OBJECT *ObjDesc; - ACPI_EVALUATE_INFO *Info; - UINT32 i; - - - ACPI_FUNCTION_TRACE_PTR (DsCallControlMethod, ThisWalkState); - - ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Calling method %p, currentstate=%p\n", - ThisWalkState->PrevOp, ThisWalkState)); - - /* - * Get the namespace entry for the control method we are about to call - */ - MethodNode = ThisWalkState->MethodCallNode; - if (!MethodNode) - { - return_ACPI_STATUS (AE_NULL_ENTRY); - } - - ObjDesc = AcpiNsGetAttachedObject (MethodNode); - if (!ObjDesc) - { - return_ACPI_STATUS (AE_NULL_OBJECT); - } - - /* Init for new method, possibly wait on method mutex */ - - Status = AcpiDsBeginMethodExecution (MethodNode, ObjDesc, - ThisWalkState); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - /* Begin method parse/execution. Create a new walk state */ - - NextWalkState = AcpiDsCreateWalkState (ObjDesc->Method.OwnerId, - NULL, ObjDesc, Thread); - if (!NextWalkState) - { - Status = AE_NO_MEMORY; - goto Cleanup; - } - - /* - * The resolved arguments were put on the previous walk state's operand - * stack. Operands on the previous walk state stack always - * start at index 0. Also, null terminate the list of arguments - */ - ThisWalkState->Operands [ThisWalkState->NumOperands] = NULL; - - /* - * Allocate and initialize the evaluation information block - * TBD: this is somewhat inefficient, should change interface to - * DsInitAmlWalk. For now, keeps this struct off the CPU stack - */ - Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); - if (!Info) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - Info->Parameters = &ThisWalkState->Operands[0]; - Info->ParameterType = ACPI_PARAM_ARGS; - - Status = AcpiDsInitAmlWalk (NextWalkState, NULL, MethodNode, - ObjDesc->Method.AmlStart, ObjDesc->Method.AmlLength, - Info, ACPI_IMODE_EXECUTE); - - ACPI_FREE (Info); - if (ACPI_FAILURE (Status)) - { - goto Cleanup; - } - - /* - * Delete the operands on the previous walkstate operand stack - * (they were copied to new objects) - */ - for (i = 0; i < ObjDesc->Method.ParamCount; i++) - { - AcpiUtRemoveReference (ThisWalkState->Operands [i]); - ThisWalkState->Operands [i] = NULL; - } - - /* Clear the operand stack */ - - ThisWalkState->NumOperands = 0; - - ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, - "**** Begin nested execution of [%4.4s] **** WalkState=%p\n", - MethodNode->Name.Ascii, NextWalkState)); - - /* Invoke an internal method if necessary */ - - if (ObjDesc->Method.MethodFlags & AML_METHOD_INTERNAL_ONLY) - { - Status = ObjDesc->Method.Implementation (NextWalkState); - } - - return_ACPI_STATUS (Status); - - -Cleanup: - - /* On error, we must terminate the method properly */ - - AcpiDsTerminateControlMethod (ObjDesc, NextWalkState); - if (NextWalkState) - { - AcpiDsDeleteWalkState (NextWalkState); - } - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsRestartControlMethod - * - * PARAMETERS: WalkState - State for preempted method (caller) - * ReturnDesc - Return value from the called method - * - * RETURN: Status - * - * DESCRIPTION: Restart a method that was preempted by another (nested) method - * invocation. Handle the return value (if any) from the callee. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiDsRestartControlMethod ( - ACPI_WALK_STATE *WalkState, - ACPI_OPERAND_OBJECT *ReturnDesc) -{ - ACPI_STATUS Status; - int SameAsImplicitReturn; - - - ACPI_FUNCTION_TRACE_PTR (DsRestartControlMethod, WalkState); - - - ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, - "****Restart [%4.4s] Op %p ReturnValueFromCallee %p\n", - AcpiUtGetNodeName (WalkState->MethodNode), - WalkState->MethodCallOp, ReturnDesc)); - - ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, - " ReturnFromThisMethodUsed?=%X ResStack %p Walk %p\n", - WalkState->ReturnUsed, - WalkState->Results, WalkState)); - - /* Did the called method return a value? */ - - if (ReturnDesc) - { - /* Is the implicit return object the same as the return desc? */ - - SameAsImplicitReturn = (WalkState->ImplicitReturnObj == ReturnDesc); - - /* Are we actually going to use the return value? */ - - if (WalkState->ReturnUsed) - { - /* Save the return value from the previous method */ - - Status = AcpiDsResultPush (ReturnDesc, WalkState); - if (ACPI_FAILURE (Status)) - { - AcpiUtRemoveReference (ReturnDesc); - return_ACPI_STATUS (Status); - } - - /* - * Save as THIS method's return value in case it is returned - * immediately to yet another method - */ - WalkState->ReturnDesc = ReturnDesc; - } - - /* - * The following code is the optional support for the so-called - * "implicit return". Some AML code assumes that the last value of the - * method is "implicitly" returned to the caller, in the absence of an - * explicit return value. - * - * Just save the last result of the method as the return value. - * - * NOTE: this is optional because the ASL language does not actually - * support this behavior. - */ - else if (!AcpiDsDoImplicitReturn (ReturnDesc, WalkState, FALSE) || - SameAsImplicitReturn) - { - /* - * Delete the return value if it will not be used by the - * calling method or remove one reference if the explicit return - * is the same as the implicit return value. - */ - AcpiUtRemoveReference (ReturnDesc); - } - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiDsTerminateControlMethod - * - * PARAMETERS: MethodDesc - Method object - * WalkState - State associated with the method - * - * RETURN: None - * - * DESCRIPTION: Terminate a control method. Delete everything that the method - * created, delete all locals and arguments, and delete the parse - * tree if requested. - * - * MUTEX: Interpreter is locked - * - ******************************************************************************/ - -void -AcpiDsTerminateControlMethod ( - ACPI_OPERAND_OBJECT *MethodDesc, - ACPI_WALK_STATE *WalkState) -{ - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE_PTR (DsTerminateControlMethod, WalkState); - - - /* MethodDesc is required, WalkState is optional */ - - if (!MethodDesc) - { - return_VOID; - } - - if (WalkState) - { - /* Delete all arguments and locals */ - - AcpiDsMethodDataDeleteAll (WalkState); - } - - /* - * If method is serialized, release the mutex and restore the - * current sync level for this thread - */ - if (MethodDesc->Method.Mutex) - { - /* Acquisition Depth handles recursive calls */ - - MethodDesc->Method.Mutex->Mutex.AcquisitionDepth--; - if (!MethodDesc->Method.Mutex->Mutex.AcquisitionDepth) - { - WalkState->Thread->CurrentSyncLevel = - MethodDesc->Method.Mutex->Mutex.OriginalSyncLevel; - - AcpiOsReleaseMutex (MethodDesc->Method.Mutex->Mutex.OsMutex); - MethodDesc->Method.Mutex->Mutex.ThreadId = 0; - } - } - - if (WalkState) - { - /* - * Delete any namespace objects created anywhere within - * the namespace by the execution of this method - */ - AcpiNsDeleteNamespaceByOwner (MethodDesc->Method.OwnerId); - } - - /* Decrement the thread count on the method */ - - if (MethodDesc->Method.ThreadCount) - { - MethodDesc->Method.ThreadCount--; - } - else - { - ACPI_ERROR ((AE_INFO, - "Invalid zero thread count in method")); - } - - /* Are there any other threads currently executing this method? */ - - if (MethodDesc->Method.ThreadCount) - { - /* - * Additional threads. Do not release the OwnerId in this case, - * we immediately reuse it for the next thread executing this method - */ - ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, - "*** Completed execution of one thread, %d threads remaining\n", - MethodDesc->Method.ThreadCount)); - } - else - { - /* This is the only executing thread for this method */ - - /* - * Support to dynamically change a method from NotSerialized to - * Serialized if it appears that the method is incorrectly written and - * does not support multiple thread execution. The best example of this - * is if such a method creates namespace objects and blocks. A second - * thread will fail with an AE_ALREADY_EXISTS exception - * - * This code is here because we must wait until the last thread exits - * before creating the synchronization semaphore. - */ - if ((MethodDesc->Method.MethodFlags & AML_METHOD_SERIALIZED) && - (!MethodDesc->Method.Mutex)) - { - Status = AcpiDsCreateMethodMutex (MethodDesc); - } - - /* No more threads, we can free the OwnerId */ - - AcpiUtReleaseOwnerId (&MethodDesc->Method.OwnerId); - } - - return_VOID; -} - - |
