--- /dev/null	ven. janv. 17 07:30:52 2014
+++ new/usr/src/common/acpica/components/utilities/utxfmutex.c	ven. janv. 17 07:30:52 2014
@@ -0,0 +1,213 @@
+/*******************************************************************************
+ *
+ * Module Name: utxfmutex - external AML mutex access functions
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2014, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#define __UTXFMUTEX_C__
+
+#include "acpi.h"
+#include "accommon.h"
+#include "acnamesp.h"
+
+
+#define _COMPONENT          ACPI_UTILITIES
+        ACPI_MODULE_NAME    ("utxfmutex")
+
+
+/* Local prototypes */
+
+static ACPI_STATUS
+AcpiUtGetMutexObject (
+    ACPI_HANDLE             Handle,
+    ACPI_STRING             Pathname,
+    ACPI_OPERAND_OBJECT     **RetObj);
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtGetMutexObject
+ *
+ * PARAMETERS:  Handle              - Mutex or prefix handle (optional)
+ *              Pathname            - Mutex pathname (optional)
+ *              RetObj              - Where the mutex object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get an AML mutex object. The mutex node is pointed to by
+ *              Handle:Pathname. Either Handle or Pathname can be NULL, but
+ *              not both.
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+AcpiUtGetMutexObject (
+    ACPI_HANDLE             Handle,
+    ACPI_STRING             Pathname,
+    ACPI_OPERAND_OBJECT     **RetObj)
+{
+    ACPI_NAMESPACE_NODE     *MutexNode;
+    ACPI_OPERAND_OBJECT     *MutexObj;
+    ACPI_STATUS             Status;
+
+
+    /* Parameter validation */
+
+    if (!RetObj || (!Handle && !Pathname))
+    {
+        return (AE_BAD_PARAMETER);
+    }
+
+    /* Get a the namespace node for the mutex */
+
+    MutexNode = Handle;
+    if (Pathname != NULL)
+    {
+        Status = AcpiGetHandle (Handle, Pathname,
+            ACPI_CAST_PTR (ACPI_HANDLE, &MutexNode));
+        if (ACPI_FAILURE (Status))
+        {
+            return (Status);
+        }
+    }
+
+    /* Ensure that we actually have a Mutex object */
+
+    if (!MutexNode ||
+        (MutexNode->Type != ACPI_TYPE_MUTEX))
+    {
+        return (AE_TYPE);
+    }
+
+    /* Get the low-level mutex object */
+
+    MutexObj = AcpiNsGetAttachedObject (MutexNode);
+    if (!MutexObj)
+    {
+        return (AE_NULL_OBJECT);
+    }
+
+    *RetObj = MutexObj;
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiAcquireMutex
+ *
+ * PARAMETERS:  Handle              - Mutex or prefix handle (optional)
+ *              Pathname            - Mutex pathname (optional)
+ *              Timeout             - Max time to wait for the lock (millisec)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Acquire an AML mutex. This is a device driver interface to
+ *              AML mutex objects, and allows for transaction locking between
+ *              drivers and AML code. The mutex node is pointed to by
+ *              Handle:Pathname. Either Handle or Pathname can be NULL, but
+ *              not both.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiAcquireMutex (
+    ACPI_HANDLE             Handle,
+    ACPI_STRING             Pathname,
+    UINT16                  Timeout)
+{
+    ACPI_STATUS             Status;
+    ACPI_OPERAND_OBJECT     *MutexObj;
+
+
+    /* Get the low-level mutex associated with Handle:Pathname */
+
+    Status = AcpiUtGetMutexObject (Handle, Pathname, &MutexObj);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    /* Acquire the OS mutex */
+
+    Status = AcpiOsAcquireMutex (MutexObj->Mutex.OsMutex, Timeout);
+    return (Status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiReleaseMutex
+ *
+ * PARAMETERS:  Handle              - Mutex or prefix handle (optional)
+ *              Pathname            - Mutex pathname (optional)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Release an AML mutex. This is a device driver interface to
+ *              AML mutex objects, and allows for transaction locking between
+ *              drivers and AML code. The mutex node is pointed to by
+ *              Handle:Pathname. Either Handle or Pathname can be NULL, but
+ *              not both.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiReleaseMutex (
+    ACPI_HANDLE             Handle,
+    ACPI_STRING             Pathname)
+{
+    ACPI_STATUS             Status;
+    ACPI_OPERAND_OBJECT     *MutexObj;
+
+
+    /* Get the low-level mutex associated with Handle:Pathname */
+
+    Status = AcpiUtGetMutexObject (Handle, Pathname, &MutexObj);
+    if (ACPI_FAILURE (Status))
+    {
+        return (Status);
+    }
+
+    /* Release the OS mutex */
+
+    AcpiOsReleaseMutex (MutexObj->Mutex.OsMutex);
+    return (AE_OK);
+}
