C++ ACPI_WARNING函数代码示例

void acpi_ut_repair_name(char *name)
{
	u32 i;
	u8 found_bad_char = FALSE;
	u32 original_name;

	ACPI_FUNCTION_NAME(ut_repair_name);

	ACPI_MOVE_NAME(&original_name, name);

	/* Check each character in the name */

	for (i = 0; i < ACPI_NAME_SIZE; i++) {
		if (acpi_ut_valid_acpi_char(name[i], i)) {
			continue;
		}

		/*
		 * Replace a bad character with something printable, yet technically
		 * still invalid. This prevents any collisions with existing "good"
		 * names in the namespace.
		 */
		name[i] = '*';
		found_bad_char = TRUE;
	}

	if (found_bad_char) {

		/* Report warning only if in strict mode or debug mode */

		if (!acpi_gbl_enable_interpreter_slack) {
			ACPI_WARNING((AE_INFO,
				      "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
				      original_name, name));
		} else {
			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
					  "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
					  original_name, name));
		}
	}
}

acpi_status acpi_ev_release_global_lock(void)
{
	u8 pending = FALSE;
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(ev_release_global_lock);

	if (!acpi_gbl_global_lock_thread_count) {
		ACPI_WARNING((AE_INFO,
			      "Cannot release HW Global Lock, it has not been acquired"));
		return_ACPI_STATUS(AE_NOT_ACQUIRED);
	}

	/* One fewer thread has the global lock */

	acpi_gbl_global_lock_thread_count--;
	if (acpi_gbl_global_lock_thread_count) {

		/* There are still some threads holding the lock, cannot release */

		return_ACPI_STATUS(AE_OK);
	}

	/*
	 * No more threads holding lock, we can do the actual hardware
	 * release
	 */
	ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_common_fACS.global_lock, pending);
	acpi_gbl_global_lock_acquired = FALSE;

	/*
	 * If the pending bit was set, we must write GBL_RLS to the control
	 * register
	 */
	if (pending) {
		status = acpi_set_register(ACPI_BITREG_GLOBAL_LOCK_RELEASE,
					   1, ACPI_MTX_LOCK);
	}

	return_ACPI_STATUS(status);
}

union acpi_operand_object *acpi_ns_get_attached_object(struct
						       acpi_namespace_node
						       *node)
{
	ACPI_FUNCTION_TRACE_PTR(ns_get_attached_object, node);

	if (!node) {
		ACPI_WARNING((AE_INFO, "Null Node ptr"));
		return_PTR(NULL);
	}

	if (!node->object ||
	    ((ACPI_GET_DESCRIPTOR_TYPE(node->object) != ACPI_DESC_TYPE_OPERAND)
	     && (ACPI_GET_DESCRIPTOR_TYPE(node->object) !=
		 ACPI_DESC_TYPE_NAMED))
	    || ((node->object)->common.type == ACPI_TYPE_LOCAL_DATA)) {
		return_PTR(NULL);
	}

	return_PTR(node->object);
}

void
AcpiTbCreateLocalFadt (
    ACPI_TABLE_HEADER       *Table,
    UINT32                  Length)
{

    /*
     * Check if the FADT is larger than the largest table that we expect
     * (the ACPI 2.0/3.0 version). If so, truncate the table, and issue
     * a warning.
     */
    if (Length > sizeof (ACPI_TABLE_FADT))
    {
        ACPI_WARNING ((AE_INFO,
                       "FADT (revision %u) is longer than ACPI 2.0 version, "
                       "truncating length %u to %u",
                       Table->Revision, Length, (UINT32) sizeof (ACPI_TABLE_FADT)));
    }

    /* Clear the entire local FADT */

    ACPI_MEMSET (&AcpiGbl_FADT, 0, sizeof (ACPI_TABLE_FADT));

    /* Copy the original FADT, up to sizeof (ACPI_TABLE_FADT) */

    ACPI_MEMCPY (&AcpiGbl_FADT, Table,
                 ACPI_MIN (Length, sizeof (ACPI_TABLE_FADT)));

    /* Convert the local copy of the FADT to the common internal format */

    AcpiTbConvertFadt ();

    /* Validate FADT values now, before we make any changes */

    AcpiTbValidateFadt ();

    /* Initialize the global ACPI register structures */

    AcpiTbSetupFadtRegisters ();
}

ACPI_STATUS
AcpiTbGetTable (
    ACPI_TABLE_DESC        *TableDesc,
    ACPI_TABLE_HEADER      **OutTable)
{
    ACPI_STATUS            Status;


    ACPI_FUNCTION_TRACE (AcpiTbGetTable);


    if (TableDesc->ValidationCount == 0)
    {
        /* Table need to be "VALIDATED" */

        Status = AcpiTbValidateTable (TableDesc);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    if (TableDesc->ValidationCount < ACPI_MAX_TABLE_VALIDATIONS)
    {
        TableDesc->ValidationCount++;

        /*
         * Detect ValidationCount overflows to ensure that the warning
         * message will only be printed once.
         */
        if (TableDesc->ValidationCount >= ACPI_MAX_TABLE_VALIDATIONS)
        {
            ACPI_WARNING((AE_INFO,
                "Table %p, Validation count overflows\n", TableDesc));
        }
    }

    *OutTable = TableDesc->Pointer;
    return_ACPI_STATUS (AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_remove_fixed_event_handler
 *
 * PARAMETERS:  event           - Event type to disable.
 *              handler         - Address of the handler
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Disables the event and unregisters the event handler.
 *
 ******************************************************************************/
acpi_status
acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler)
{
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler);

	/* Parameter validation */

	if (event > ACPI_EVENT_MAX) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Disable the event before removing the handler */

	status = acpi_disable_event(event, 0);

	/* Always Remove the handler */

	acpi_gbl_fixed_event_handlers[event].handler = NULL;
	acpi_gbl_fixed_event_handlers[event].context = NULL;

	if (ACPI_FAILURE(status)) {
		ACPI_WARNING((AE_INFO,
			      "Could not disable fixed event - %s (%u)",
			      acpi_ut_get_event_name(event), event));
	} else {
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
				  "Disabled fixed event - %s (%X)\n",
				  acpi_ut_get_event_name(event), event));
	}

	(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
	return_ACPI_STATUS(status);
}

acpi_status acpi_ev_release_global_lock(void)
{
	u8 pending = FALSE;
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(ev_release_global_lock);

	

	if (!acpi_gbl_global_lock_acquired) {
		ACPI_WARNING((AE_INFO,
			      "Cannot release the ACPI Global Lock, it has not been acquired"));
		return_ACPI_STATUS(AE_NOT_ACQUIRED);
	}

	if (acpi_gbl_global_lock_present) {

		

		ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_FACS, pending);

		if (pending) {
			status =
			    acpi_write_bit_register
			    (ACPI_BITREG_GLOBAL_LOCK_RELEASE,
			     ACPI_ENABLE_EVENT);
		}

		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
				  "Released hardware Global Lock\n"));
	}

	acpi_gbl_global_lock_acquired = FALSE;

	

	acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex);
	return_ACPI_STATUS(status);
}

void __init acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
{

	/*
	 * Check if the FADT is larger than the largest table that we expect
	 * (the ACPI 5.0 version). If so, truncate the table, and issue
	 * a warning.
	 */
	if (length > sizeof(struct acpi_table_fadt)) {
		ACPI_WARNING((AE_INFO,
			      "FADT (revision %u) is longer than ACPI 5.0 version,"
			      " truncating length %u to %zu",
			      table->revision, (unsigned)length,
			      sizeof(struct acpi_table_fadt)));
	}

	/* Clear the entire local FADT */

	ACPI_MEMSET(&acpi_gbl_FADT, 0, sizeof(struct acpi_table_fadt));

	/* Copy the original FADT, up to sizeof (struct acpi_table_fadt) */

	ACPI_MEMCPY(&acpi_gbl_FADT, table,
		    ACPI_MIN(length, sizeof(struct acpi_table_fadt)));

	/* Take a copy of the Hardware Reduced flag */

	acpi_gbl_reduced_hardware = FALSE;
	if (acpi_gbl_FADT.flags & ACPI_FADT_HW_REDUCED) {
		acpi_gbl_reduced_hardware = TRUE;
	}

	/*
	 * 1) Convert the local copy of the FADT to the common internal format
	 * 2) Validate some of the important values within the FADT
	 */
	acpi_tb_convert_fadt();
	acpi_tb_validate_fadt();
}

ACPI_OPERAND_OBJECT *
AcpiNsGetAttachedObject (
    ACPI_NAMESPACE_NODE     *Node)
{
    ACPI_FUNCTION_TRACE_PTR (NsGetAttachedObject, Node);


    if (!Node)
    {
        ACPI_WARNING ((AE_INFO, "Null Node ptr"));
        return_PTR (NULL);
    }

    if (!Node->Object ||
            ((ACPI_GET_DESCRIPTOR_TYPE (Node->Object) != ACPI_DESC_TYPE_OPERAND) &&
             (ACPI_GET_DESCRIPTOR_TYPE (Node->Object) != ACPI_DESC_TYPE_NAMED))  ||
        ((Node->Object)->Common.Type == ACPI_TYPE_LOCAL_DATA))
    {
        return_PTR (NULL);
    }

    return_PTR (Node->Object);
}

void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
{
	/*
	 * Check if the FADT is larger than the largest table that we expect
	 * (the ACPI 2.0/3.0 version). If so, truncate the table, and issue
	 * a warning.
	 */
	if (length > sizeof(struct acpi_table_fadt)) {
		ACPI_WARNING((AE_INFO,
			      "FADT (revision %u) is longer than ACPI 2.0 version, "
			      "truncating length %u to %u",
			      table->revision, length,
			      (u32)sizeof(struct acpi_table_fadt)));
	}

	/* Clear the entire local FADT */

	ACPI_MEMSET(&acpi_gbl_FADT, 0, sizeof(struct acpi_table_fadt));

	/* Copy the original FADT, up to sizeof (struct acpi_table_fadt) */

	ACPI_MEMCPY(&acpi_gbl_FADT, table,
		    ACPI_MIN(length, sizeof(struct acpi_table_fadt)));

	/* Convert the local copy of the FADT to the common internal format */

	acpi_tb_convert_fadt();

	/* Validate FADT values now, before we make any changes */

	acpi_tb_validate_fadt();

	/* Initialize the global ACPI register structures */

	acpi_tb_setup_fadt_registers();
}

static void
AcpiUtUpdateRefCount (
    ACPI_OPERAND_OBJECT     *Object,
    UINT32                  Action)
{
    UINT16                  OriginalCount;
    UINT16                  NewCount = 0;
    ACPI_CPU_FLAGS          LockFlags;


    ACPI_FUNCTION_NAME (UtUpdateRefCount);


    if (!Object)
    {
        return;
    }

    /*
     * Always get the reference count lock. Note: Interpreter and/or
     * Namespace is not always locked when this function is called.
     */
    LockFlags = AcpiOsAcquireLock (AcpiGbl_ReferenceCountLock);
    OriginalCount = Object->Common.ReferenceCount;

    /* Perform the reference count action (increment, decrement) */

    switch (Action)
    {
    case REF_INCREMENT:

        NewCount = OriginalCount + 1;
        Object->Common.ReferenceCount = NewCount;
        AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);

        /* The current reference count should never be zero here */

        if (!OriginalCount)
        {
            ACPI_WARNING ((AE_INFO,
                "Obj %p, Reference Count was zero before increment\n",
                Object));
        }

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "Obj %p Type %.2X Refs %.2X [Incremented]\n",
            Object, Object->Common.Type, NewCount));
        break;

    case REF_DECREMENT:

        /* The current reference count must be non-zero */

        if (OriginalCount)
        {
            NewCount = OriginalCount - 1;
            Object->Common.ReferenceCount = NewCount;
        }

        AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);

        if (!OriginalCount)
        {
            ACPI_WARNING ((AE_INFO,
                "Obj %p, Reference Count is already zero, cannot decrement\n",
                Object));
        }

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "Obj %p Type %.2X Refs %.2X [Decremented]\n",
            Object, Object->Common.Type, NewCount));

        /* Actually delete the object on a reference count of zero */

        if (NewCount == 0)
        {
            AcpiUtDeleteInternalObj (Object);
        }
        break;

    default:

        AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);
        ACPI_ERROR ((AE_INFO, "Unknown Reference Count action (0x%X)",
            Action));
        return;
    }

    /*
     * Sanity check the reference count, for debug purposes only.
     * (A deleted object will have a huge reference count)
     */
    if (NewCount > ACPI_MAX_REFERENCE_COUNT)
    {
        ACPI_WARNING ((AE_INFO,
            "Large Reference Count (0x%X) in object %p, Type=0x%.2X",
            NewCount, Object, Object->Common.Type));
    }
}

ACPI_STATUS
AcpiDsScopeStackPush (
    ACPI_NAMESPACE_NODE     *Node,
    ACPI_OBJECT_TYPE        Type,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_GENERIC_STATE      *ScopeInfo;
    ACPI_GENERIC_STATE      *OldScopeInfo;


    ACPI_FUNCTION_TRACE (DsScopeStackPush);


    if (!Node)
    {
        /* Invalid scope   */

        ACPI_ERROR ((AE_INFO, "Null scope parameter"));
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Make sure object type is valid */

    if (!AcpiUtValidObjectType (Type))
    {
        ACPI_WARNING ((AE_INFO,
            "Invalid object type: 0x%X", Type));
    }

    /* Allocate a new scope object */

    ScopeInfo = AcpiUtCreateGenericState ();
    if (!ScopeInfo)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Init new scope object */

    ScopeInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_WSCOPE;
    ScopeInfo->Scope.Node = Node;
    ScopeInfo->Common.Value = (UINT16) Type;

    WalkState->ScopeDepth++;

    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
        "[%.2d] Pushed scope ", (UINT32) WalkState->ScopeDepth));

    OldScopeInfo = WalkState->ScopeInfo;
    if (OldScopeInfo)
    {
        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
            "[%4.4s] (%s)",
            AcpiUtGetNodeName (OldScopeInfo->Scope.Node),
            AcpiUtGetTypeName (OldScopeInfo->Common.Value)));
    }
    else
    {
        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, ACPI_NAMESPACE_ROOT));
    }

    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
        ", New scope -> [%4.4s] (%s)\n",
        AcpiUtGetNodeName (ScopeInfo->Scope.Node),
        AcpiUtGetTypeName (ScopeInfo->Common.Value)));

    /* Push new scope object onto stack */

    AcpiUtPushGenericState (&WalkState->ScopeInfo, ScopeInfo);
    return_ACPI_STATUS (AE_OK);
}

ACPI_STATUS
AcpiExStoreObjectToObject (
    ACPI_OPERAND_OBJECT     *SourceDesc,
    ACPI_OPERAND_OBJECT     *DestDesc,
    ACPI_OPERAND_OBJECT     **NewDesc,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_OPERAND_OBJECT     *ActualSrcDesc;
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE_PTR (ExStoreObjectToObject, SourceDesc);


    ActualSrcDesc = SourceDesc;
    if (!DestDesc)
    {
        /*
         * There is no destination object (An uninitialized node or
         * package element), so we can simply copy the source object
         * creating a new destination object
         */
        Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, NewDesc, WalkState);
        return_ACPI_STATUS (Status);
    }

    if (SourceDesc->Common.Type != DestDesc->Common.Type)
    {
        /*
         * The source type does not match the type of the destination.
         * Perform the "implicit conversion" of the source to the current type
         * of the target as per the ACPI specification.
         *
         * If no conversion performed, ActualSrcDesc = SourceDesc.
         * Otherwise, ActualSrcDesc is a temporary object to hold the
         * converted object.
         */
        Status = AcpiExConvertToTargetType (DestDesc->Common.Type,
                        SourceDesc, &ActualSrcDesc, WalkState);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }

        if (SourceDesc == ActualSrcDesc)
        {
            /*
             * No conversion was performed. Return the SourceDesc as the
             * new object.
             */
            *NewDesc = SourceDesc;
            return_ACPI_STATUS (AE_OK);
        }
    }

    /*
     * We now have two objects of identical types, and we can perform a
     * copy of the *value* of the source object.
     */
    switch (DestDesc->Common.Type)
    {
    case ACPI_TYPE_INTEGER:

        DestDesc->Integer.Value = ActualSrcDesc->Integer.Value;

        /* Truncate value if we are executing from a 32-bit ACPI table */

        AcpiExTruncateFor32bitTable (DestDesc);
        break;

    case ACPI_TYPE_STRING:

        Status = AcpiExStoreStringToString (ActualSrcDesc, DestDesc);
        break;

    case ACPI_TYPE_BUFFER:

        Status = AcpiExStoreBufferToBuffer (ActualSrcDesc, DestDesc);
        break;

    case ACPI_TYPE_PACKAGE:

        Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, &DestDesc,
                    WalkState);
        break;

    default:
        /*
         * All other types come here.
         */
        ACPI_WARNING ((AE_INFO, "Store into type %s not implemented",
            AcpiUtGetObjectTypeName (DestDesc)));

        Status = AE_NOT_IMPLEMENTED;
        break;
    }

    if (ActualSrcDesc != SourceDesc)
    {
        /* Delete the intermediate (temporary) source object */
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        if (Op->Asl.CompileFlags & NODE_IS_TARGET)
        {
            MethodInfo->ArgInitialized[RegisterNumber] = TRUE;
        }

        /*
         * Otherwise, this is a reference, check if the Arg
         * has been previously initialized.
         *
         * The only operator that accepts an uninitialized value is ObjectType()
         */
        else if ((!MethodInfo->ArgInitialized[RegisterNumber]) &&
                 (Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_OBJECTTYPE))
        {
            AslError (ASL_ERROR, ASL_MSG_ARG_INIT, Op, ArgName);
        }

        /* Flag this arg if it is not a "real" argument to the method */

        if (RegisterNumber >= MethodInfo->NumArguments)
        {
            AslError (ASL_REMARK, ASL_MSG_NOT_PARAMETER, Op, ArgName);
        }
        break;

    case PARSEOP_RETURN:

        if (!MethodInfo)
        {
            /*
             * Probably was an error in the method declaration,
             * no additional error here
             */
            ACPI_WARNING ((AE_INFO, "%p, No parent method", Op));
            return (AE_ERROR);
        }

        /*
         * A child indicates a possible return value. A simple Return or
         * Return() is marked with NODE_IS_NULL_RETURN by the parser so
         * that it is not counted as a "real" return-with-value, although
         * the AML code that is actually emitted is Return(0). The AML
         * definition of Return has a required parameter, so we are
         * forced to convert a null return to Return(0).
         */
        if ((Op->Asl.Child) &&
            (Op->Asl.Child->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG) &&
            (!(Op->Asl.Child->Asl.CompileFlags & NODE_IS_NULL_RETURN)))
        {
            MethodInfo->NumReturnWithValue++;
        }
        else
        {
            MethodInfo->NumReturnNoValue++;
        }
        break;

    case PARSEOP_BREAK:
    case PARSEOP_CONTINUE:

        Next = Op->Asl.Parent;
        while (Next)
        {
            if (Next->Asl.ParseOpcode == PARSEOP_WHILE)
            {
                break;

void
AcpiEvTerminate (
    void)
{
    UINT32                  i;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (EvTerminate);


    if (AcpiGbl_EventsInitialized)
    {
        /*
         * Disable all event-related functionality. In all cases, on error,
         * print a message but obviously we don't abort.
         */

        /* Disable all fixed events */

        for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
        {
            Status = AcpiDisableEvent (i, 0);
            if (ACPI_FAILURE (Status))
            {
                ACPI_ERROR ((AE_INFO,
                    "Could not disable fixed event %u", (UINT32) i));
            }
        }

        /* Disable all GPEs in all GPE blocks */

        Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);

        Status = AcpiEvRemoveGlobalLockHandler ();
        if (ACPI_FAILURE(Status))
        {
            ACPI_ERROR ((AE_INFO,
                "Could not remove Global Lock handler"));
        }

        AcpiGbl_EventsInitialized = FALSE;
    }

    /* Remove SCI handlers */

    Status = AcpiEvRemoveAllSciHandlers ();
    if (ACPI_FAILURE(Status))
    {
        ACPI_ERROR ((AE_INFO,
            "Could not remove SCI handler"));
    }

    /* Deallocate all handler objects installed within GPE info structs */

    Status = AcpiEvWalkGpeList (AcpiEvDeleteGpeHandlers, NULL);

    /* Return to original mode if necessary */

    if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY)
    {
        Status = AcpiDisable ();
        if (ACPI_FAILURE (Status))
        {
            ACPI_WARNING ((AE_INFO, "AcpiDisable failed"));
        }
    }
    return_VOID;
}