1 files changed, 301 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/namespace/nsnames.c b/sys/contrib/dev/acpica/components/namespace/nsnames.c
new file mode 100644
index 0000000..cd4d440
--- /dev/null
+++ b/sys/contrib/dev/acpica/components/namespace/nsnames.c
@@ -0,0 +1,301 @@
+/*******************************************************************************
+ *
+ * Module Name: nsnames - Name manipulation and search
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, 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 __NSNAMES_C__
+
+#include <contrib/dev/acpica/include/acpi.h>
+#include <contrib/dev/acpica/include/accommon.h>
+#include <contrib/dev/acpica/include/amlcode.h>
+#include <contrib/dev/acpica/include/acnamesp.h>
+
+
+#define _COMPONENT          ACPI_NAMESPACE
+        ACPI_MODULE_NAME    ("nsnames")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiNsBuildExternalPath
+ *
+ * PARAMETERS:  Node            - NS node whose pathname is needed
+ *              Size            - Size of the pathname
+ *              *NameBuffer     - Where to return the pathname
+ *
+ * RETURN:      Status
+ *              Places the pathname into the NameBuffer, in external format
+ *              (name segments separated by path separators)
+ *
+ * DESCRIPTION: Generate a full pathaname
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiNsBuildExternalPath (
+    ACPI_NAMESPACE_NODE     *Node,
+    ACPI_SIZE               Size,
+    char                    *NameBuffer)
+{
+    ACPI_SIZE               Index;
+    ACPI_NAMESPACE_NODE     *ParentNode;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    /* Special case for root */
+
+    Index = Size - 1;
+    if (Index < ACPI_NAME_SIZE)
+    {
+        NameBuffer[0] = AML_ROOT_PREFIX;
+        NameBuffer[1] = 0;
+        return (AE_OK);
+    }
+
+    /* Store terminator byte, then build name backwards */
+
+    ParentNode = Node;
+    NameBuffer[Index] = 0;
+
+    while ((Index > ACPI_NAME_SIZE) && (ParentNode != AcpiGbl_RootNode))
+    {
+        Index -= ACPI_NAME_SIZE;
+
+        /* Put the name into the buffer */
+
+        ACPI_MOVE_32_TO_32 ((NameBuffer + Index), &ParentNode->Name);
+        ParentNode = ParentNode->Parent;
+
+        /* Prefix name with the path separator */
+
+        Index--;
+        NameBuffer[Index] = ACPI_PATH_SEPARATOR;
+    }
+
+    /* Overwrite final separator with the root prefix character */
+
+    NameBuffer[Index] = AML_ROOT_PREFIX;
+
+    if (Index != 0)
+    {
+        ACPI_ERROR ((AE_INFO,
+            "Could not construct external pathname; index=%u, size=%u, Path=%s",
+            (UINT32) Index, (UINT32) Size, &NameBuffer[Size]));
+
+        return (AE_BAD_PARAMETER);
+    }
+
+    return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiNsGetExternalPathname
+ *
+ * PARAMETERS:  Node            - Namespace node whose pathname is needed
+ *
+ * RETURN:      Pointer to storage containing the fully qualified name of
+ *              the node, In external format (name segments separated by path
+ *              separators.)
+ *
+ * DESCRIPTION: Used to obtain the full pathname to a namespace node, usually
+ *              for error and debug statements.
+ *
+ ******************************************************************************/
+
+char *
+AcpiNsGetExternalPathname (
+    ACPI_NAMESPACE_NODE     *Node)
+{
+    ACPI_STATUS             Status;
+    char                    *NameBuffer;
+    ACPI_SIZE               Size;
+
+
+    ACPI_FUNCTION_TRACE_PTR (NsGetExternalPathname, Node);
+
+
+    /* Calculate required buffer size based on depth below root */
+
+    Size = AcpiNsGetPathnameLength (Node);
+    if (!Size)
+    {
+        return_PTR (NULL);
+    }
+
+    /* Allocate a buffer to be returned to caller */
+
+    NameBuffer = ACPI_ALLOCATE_ZEROED (Size);
+    if (!NameBuffer)
+    {
+        ACPI_ERROR ((AE_INFO, "Could not allocate %u bytes", (UINT32) Size));
+        return_PTR (NULL);
+    }
+
+    /* Build the path in the allocated buffer */
+
+    Status = AcpiNsBuildExternalPath (Node, Size, NameBuffer);
+    if (ACPI_FAILURE (Status))
+    {
+        ACPI_FREE (NameBuffer);
+        return_PTR (NULL);
+    }
+
+    return_PTR (NameBuffer);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiNsGetPathnameLength
+ *
+ * PARAMETERS:  Node        - Namespace node
+ *
+ * RETURN:      Length of path, including prefix
+ *
+ * DESCRIPTION: Get the length of the pathname string for this node
+ *
+ ******************************************************************************/
+
+ACPI_SIZE
+AcpiNsGetPathnameLength (
+    ACPI_NAMESPACE_NODE     *Node)
+{
+    ACPI_SIZE               Size;
+    ACPI_NAMESPACE_NODE     *NextNode;
+
+
+    ACPI_FUNCTION_ENTRY ();
+
+
+    /*
+     * Compute length of pathname as 5 * number of name segments.
+     * Go back up the parent tree to the root
+     */
+    Size = 0;
+    NextNode = Node;
+
+    while (NextNode && (NextNode != AcpiGbl_RootNode))
+    {
+        if (ACPI_GET_DESCRIPTOR_TYPE (NextNode) != ACPI_DESC_TYPE_NAMED)
+        {
+            ACPI_ERROR ((AE_INFO,
+                "Invalid Namespace Node (%p) while traversing namespace",
+                NextNode));
+            return (0);
+        }
+        Size += ACPI_PATH_SEGMENT_LENGTH;
+        NextNode = NextNode->Parent;
+    }
+
+    if (!Size)
+    {
+        Size = 1; /* Root node case */
+    }
+
+    return (Size + 1);  /* +1 for null string terminator */
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiNsHandleToPathname
+ *
+ * PARAMETERS:  TargetHandle            - Handle of named object whose name is
+ *                                        to be found
+ *              Buffer                  - Where the pathname is returned
+ *
+ * RETURN:      Status, Buffer is filled with pathname if status is AE_OK
+ *
+ * DESCRIPTION: Build and return a full namespace pathname
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiNsHandleToPathname (
+    ACPI_HANDLE             TargetHandle,
+    ACPI_BUFFER             *Buffer)
+{
+    ACPI_STATUS             Status;
+    ACPI_NAMESPACE_NODE     *Node;
+    ACPI_SIZE               RequiredSize;
+
+
+    ACPI_FUNCTION_TRACE_PTR (NsHandleToPathname, TargetHandle);
+
+
+    Node = AcpiNsValidateHandle (TargetHandle);
+    if (!Node)
+    {
+        return_ACPI_STATUS (AE_BAD_PARAMETER);
+    }
+
+    /* Determine size required for the caller buffer */
+
+    RequiredSize = AcpiNsGetPathnameLength (Node);
+    if (!RequiredSize)
+    {
+        return_ACPI_STATUS (AE_BAD_PARAMETER);
+    }
+
+    /* Validate/Allocate/Clear caller buffer */
+
+    Status = AcpiUtInitializeBuffer (Buffer, RequiredSize);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Build the path in the caller buffer */
+
+    Status = AcpiNsBuildExternalPath (Node, RequiredSize, Buffer->Pointer);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s [%X]\n",
+        (char *) Buffer->Pointer, (UINT32) RequiredSize));
+    return_ACPI_STATUS (AE_OK);
+}