Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

drivers/acpi/utilities/Makefile

@@ -0,0 +1,8 @@
+#
+# Makefile for all Linux ACPI interpreter subdirectories
+#
+
+obj-y := utalloc.o  utdebug.o   uteval.o    utinit.o  utmisc.o    utxface.o \
+	 utcopy.o   utdelete.o  utglobal.o  utmath.o  utobject.o
+
+EXTRA_CFLAGS += $(ACPI_CFLAGS)

drivers/acpi/utilities/utalloc.c

@@ -0,0 +1,988 @@
+/******************************************************************************
+ *
+ * Module Name: utalloc - local cache and memory allocation routines
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utalloc")
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_release_to_cache
+ *
+ * PARAMETERS:  list_id             - Memory list/cache ID
+ *              Object              - The object to be released
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Release an object to the specified cache.  If cache is full,
+ *              the object is deleted.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_release_to_cache (
+	u32                             list_id,
+	void                            *object)
+{
+	struct acpi_memory_list         *cache_info;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	cache_info = &acpi_gbl_memory_lists[list_id];
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+
+	/* If walk cache is full, just free this wallkstate object */
+
+	if (cache_info->cache_depth >= cache_info->max_cache_depth) {
+		ACPI_MEM_FREE (object);
+		ACPI_MEM_TRACKING (cache_info->total_freed++);
+	}
+
+	/* Otherwise put this object back into the cache */
+
+	else {
+		if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES))) {
+			return;
+		}
+
+		/* Mark the object as cached */
+
+		ACPI_MEMSET (object, 0xCA, cache_info->object_size);
+		ACPI_SET_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_CACHED);
+
+		/* Put the object at the head of the cache list */
+
+		* (ACPI_CAST_INDIRECT_PTR (char, &(((char *) object)[cache_info->link_offset]))) = cache_info->list_head;
+		cache_info->list_head = object;
+		cache_info->cache_depth++;
+
+		(void) acpi_ut_release_mutex (ACPI_MTX_CACHES);
+	}
+
+#else
+
+	/* Object cache is disabled; just free the object */
+
+	ACPI_MEM_FREE (object);
+	ACPI_MEM_TRACKING (cache_info->total_freed++);
+#endif
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_acquire_from_cache
+ *
+ * PARAMETERS:  list_id             - Memory list ID
+ *
+ * RETURN:      A requested object.  NULL if the object could not be
+ *              allocated.
+ *
+ * DESCRIPTION: Get an object from the specified cache.  If cache is empty,
+ *              the object is allocated.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ut_acquire_from_cache (
+	u32                             list_id)
+{
+	struct acpi_memory_list         *cache_info;
+	void                            *object;
+
+
+	ACPI_FUNCTION_NAME ("ut_acquire_from_cache");
+
+
+	cache_info = &acpi_gbl_memory_lists[list_id];
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+
+	if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES))) {
+		return (NULL);
+	}
+
+	ACPI_MEM_TRACKING (cache_info->cache_requests++);
+
+	/* Check the cache first */
+
+	if (cache_info->list_head) {
+		/* There is an object available, use it */
+
+		object = cache_info->list_head;
+		cache_info->list_head = *(ACPI_CAST_INDIRECT_PTR (char, &(((char *) object)[cache_info->link_offset])));
+
+		ACPI_MEM_TRACKING (cache_info->cache_hits++);
+		cache_info->cache_depth--;
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Object %p from %s\n",
+			object, acpi_gbl_memory_lists[list_id].list_name));
+#endif
+
+		if (ACPI_FAILURE (acpi_ut_release_mutex (ACPI_MTX_CACHES))) {
+			return (NULL);
+		}
+
+		/* Clear (zero) the previously used Object */
+
+		ACPI_MEMSET (object, 0, cache_info->object_size);
+	}
+
+	else {
+		/* The cache is empty, create a new object */
+
+		/* Avoid deadlock with ACPI_MEM_CALLOCATE */
+
+		if (ACPI_FAILURE (acpi_ut_release_mutex (ACPI_MTX_CACHES))) {
+			return (NULL);
+		}
+
+		object = ACPI_MEM_CALLOCATE (cache_info->object_size);
+		ACPI_MEM_TRACKING (cache_info->total_allocated++);
+	}
+
+#else
+
+	/* Object cache is disabled; just allocate the object */
+
+	object = ACPI_MEM_CALLOCATE (cache_info->object_size);
+	ACPI_MEM_TRACKING (cache_info->total_allocated++);
+#endif
+
+	return (object);
+}
+
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_generic_cache
+ *
+ * PARAMETERS:  list_id         - Memory list ID
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Free all objects within the requested cache.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_generic_cache (
+	u32                             list_id)
+{
+	struct acpi_memory_list         *cache_info;
+	char                            *next;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	cache_info = &acpi_gbl_memory_lists[list_id];
+	while (cache_info->list_head) {
+		/* Delete one cached state object */
+
+		next = *(ACPI_CAST_INDIRECT_PTR (char, &(((char *) cache_info->list_head)[cache_info->link_offset])));
+		ACPI_MEM_FREE (cache_info->list_head);
+
+		cache_info->list_head = next;
+		cache_info->cache_depth--;
+	}
+}
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_validate_buffer
+ *
+ * PARAMETERS:  Buffer              - Buffer descriptor to be validated
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform parameter validation checks on an struct acpi_buffer
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_validate_buffer (
+	struct acpi_buffer              *buffer)
+{
+
+	/* Obviously, the structure pointer must be valid */
+
+	if (!buffer) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	/* Special semantics for the length */
+
+	if ((buffer->length == ACPI_NO_BUFFER)              ||
+		(buffer->length == ACPI_ALLOCATE_BUFFER)        ||
+		(buffer->length == ACPI_ALLOCATE_LOCAL_BUFFER)) {
+		return (AE_OK);
+	}
+
+	/* Length is valid, the buffer pointer must be also */
+
+	if (!buffer->pointer) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_initialize_buffer
+ *
+ * PARAMETERS:  Buffer              - Buffer to be validated
+ *              required_length     - Length needed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Validate that the buffer is of the required length or
+ *              allocate a new buffer.  Returned buffer is always zeroed.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_initialize_buffer (
+	struct acpi_buffer              *buffer,
+	acpi_size                       required_length)
+{
+	acpi_status                     status = AE_OK;
+
+
+	switch (buffer->length) {
+	case ACPI_NO_BUFFER:
+
+		/* Set the exception and returned the required length */
+
+		status = AE_BUFFER_OVERFLOW;
+		break;
+
+
+	case ACPI_ALLOCATE_BUFFER:
+
+		/* Allocate a new buffer */
+
+		buffer->pointer = acpi_os_allocate (required_length);
+		if (!buffer->pointer) {
+			return (AE_NO_MEMORY);
+		}
+
+		/* Clear the buffer */
+
+		ACPI_MEMSET (buffer->pointer, 0, required_length);
+		break;
+
+
+	case ACPI_ALLOCATE_LOCAL_BUFFER:
+
+		/* Allocate a new buffer with local interface to allow tracking */
+
+		buffer->pointer = ACPI_MEM_CALLOCATE (required_length);
+		if (!buffer->pointer) {
+			return (AE_NO_MEMORY);
+		}
+		break;
+
+
+	default:
+
+		/* Existing buffer: Validate the size of the buffer */
+
+		if (buffer->length < required_length) {
+			status = AE_BUFFER_OVERFLOW;
+			break;
+		}
+
+		/* Clear the buffer */
+
+		ACPI_MEMSET (buffer->pointer, 0, required_length);
+		break;
+	}
+
+	buffer->length = required_length;
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_allocate
+ *
+ * PARAMETERS:  Size                - Size of the allocation
+ *              Component           - Component type of caller
+ *              Module              - Source file name of caller
+ *              Line                - Line number of caller
+ *
+ * RETURN:      Address of the allocated memory on success, NULL on failure.
+ *
+ * DESCRIPTION: The subsystem's equivalent of malloc.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ut_allocate (
+	acpi_size                       size,
+	u32                             component,
+	char                            *module,
+	u32                             line)
+{
+	void                            *allocation;
+
+
+	ACPI_FUNCTION_TRACE_U32 ("ut_allocate", size);
+
+
+	/* Check for an inadvertent size of zero bytes */
+
+	if (!size) {
+		_ACPI_REPORT_ERROR (module, line, component,
+				("ut_allocate: Attempt to allocate zero bytes\n"));
+		size = 1;
+	}
+
+	allocation = acpi_os_allocate (size);
+	if (!allocation) {
+		/* Report allocation error */
+
+		_ACPI_REPORT_ERROR (module, line, component,
+				("ut_allocate: Could not allocate size %X\n", (u32) size));
+
+		return_PTR (NULL);
+	}
+
+	return_PTR (allocation);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_callocate
+ *
+ * PARAMETERS:  Size                - Size of the allocation
+ *              Component           - Component type of caller
+ *              Module              - Source file name of caller
+ *              Line                - Line number of caller
+ *
+ * RETURN:      Address of the allocated memory on success, NULL on failure.
+ *
+ * DESCRIPTION: Subsystem equivalent of calloc.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ut_callocate (
+	acpi_size                       size,
+	u32                             component,
+	char                            *module,
+	u32                             line)
+{
+	void                            *allocation;
+
+
+	ACPI_FUNCTION_TRACE_U32 ("ut_callocate", size);
+
+
+	/* Check for an inadvertent size of zero bytes */
+
+	if (!size) {
+		_ACPI_REPORT_ERROR (module, line, component,
+				("ut_callocate: Attempt to allocate zero bytes\n"));
+		return_PTR (NULL);
+	}
+
+	allocation = acpi_os_allocate (size);
+	if (!allocation) {
+		/* Report allocation error */
+
+		_ACPI_REPORT_ERROR (module, line, component,
+				("ut_callocate: Could not allocate size %X\n", (u32) size));
+		return_PTR (NULL);
+	}
+
+	/* Clear the memory block */
+
+	ACPI_MEMSET (allocation, 0, size);
+	return_PTR (allocation);
+}
+
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+/*
+ * These procedures are used for tracking memory leaks in the subsystem, and
+ * they get compiled out when the ACPI_DBG_TRACK_ALLOCATIONS is not set.
+ *
+ * Each memory allocation is tracked via a doubly linked list.  Each
+ * element contains the caller's component, module name, function name, and
+ * line number.  acpi_ut_allocate and acpi_ut_callocate call
+ * acpi_ut_track_allocation to add an element to the list; deletion
+ * occurs in the body of acpi_ut_free.
+ */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_allocate_and_track
+ *
+ * PARAMETERS:  Size                - Size of the allocation
+ *              Component           - Component type of caller
+ *              Module              - Source file name of caller
+ *              Line                - Line number of caller
+ *
+ * RETURN:      Address of the allocated memory on success, NULL on failure.
+ *
+ * DESCRIPTION: The subsystem's equivalent of malloc.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ut_allocate_and_track (
+	acpi_size                       size,
+	u32                             component,
+	char                            *module,
+	u32                             line)
+{
+	struct acpi_debug_mem_block     *allocation;
+	acpi_status                     status;
+
+
+	allocation = acpi_ut_allocate (size + sizeof (struct acpi_debug_mem_header), component,
+			  module, line);
+	if (!allocation) {
+		return (NULL);
+	}
+
+	status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, allocation, size,
+			  ACPI_MEM_MALLOC, component, module, line);
+	if (ACPI_FAILURE (status)) {
+		acpi_os_free (allocation);
+		return (NULL);
+	}
+
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += (u32) size;
+
+	return ((void *) &allocation->user_space);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_callocate_and_track
+ *
+ * PARAMETERS:  Size                - Size of the allocation
+ *              Component           - Component type of caller
+ *              Module              - Source file name of caller
+ *              Line                - Line number of caller
+ *
+ * RETURN:      Address of the allocated memory on success, NULL on failure.
+ *
+ * DESCRIPTION: Subsystem equivalent of calloc.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ut_callocate_and_track (
+	acpi_size                       size,
+	u32                             component,
+	char                            *module,
+	u32                             line)
+{
+	struct acpi_debug_mem_block     *allocation;
+	acpi_status                     status;
+
+
+	allocation = acpi_ut_callocate (size + sizeof (struct acpi_debug_mem_header), component,
+			  module, line);
+	if (!allocation) {
+		/* Report allocation error */
+
+		_ACPI_REPORT_ERROR (module, line, component,
+				("ut_callocate: Could not allocate size %X\n", (u32) size));
+		return (NULL);
+	}
+
+	status = acpi_ut_track_allocation (ACPI_MEM_LIST_GLOBAL, allocation, size,
+			   ACPI_MEM_CALLOC, component, module, line);
+	if (ACPI_FAILURE (status)) {
+		acpi_os_free (allocation);
+		return (NULL);
+	}
+
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_allocated++;
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size += (u32) size;
+
+	return ((void *) &allocation->user_space);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_free_and_track
+ *
+ * PARAMETERS:  Allocation          - Address of the memory to deallocate
+ *              Component           - Component type of caller
+ *              Module              - Source file name of caller
+ *              Line                - Line number of caller
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Frees the memory at Allocation
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_free_and_track (
+	void                            *allocation,
+	u32                             component,
+	char                            *module,
+	u32                             line)
+{
+	struct acpi_debug_mem_block     *debug_block;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_free", allocation);
+
+
+	if (NULL == allocation) {
+		_ACPI_REPORT_ERROR (module, line, component,
+			("acpi_ut_free: Attempt to delete a NULL address\n"));
+
+		return_VOID;
+	}
+
+	debug_block = ACPI_CAST_PTR (struct acpi_debug_mem_block,
+			  (((char *) allocation) - sizeof (struct acpi_debug_mem_header)));
+
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].total_freed++;
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].current_total_size -= debug_block->size;
+
+	status = acpi_ut_remove_allocation (ACPI_MEM_LIST_GLOBAL, debug_block,
+			  component, module, line);
+	if (ACPI_FAILURE (status)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not free memory, %s\n",
+			acpi_format_exception (status)));
+	}
+
+	acpi_os_free (debug_block);
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed\n", allocation));
+
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_find_allocation
+ *
+ * PARAMETERS:  list_id                 - Memory list to search
+ *              Allocation              - Address of allocated memory
+ *
+ * RETURN:      A list element if found; NULL otherwise.
+ *
+ * DESCRIPTION: Searches for an element in the global allocation tracking list.
+ *
+ ******************************************************************************/
+
+struct acpi_debug_mem_block *
+acpi_ut_find_allocation (
+	u32                             list_id,
+	void                            *allocation)
+{
+	struct acpi_debug_mem_block     *element;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	if (list_id > ACPI_MEM_LIST_MAX) {
+		return (NULL);
+	}
+
+	element = acpi_gbl_memory_lists[list_id].list_head;
+
+	/* Search for the address. */
+
+	while (element) {
+		if (element == allocation) {
+			return (element);
+		}
+
+		element = element->next;
+	}
+
+	return (NULL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_track_allocation
+ *
+ * PARAMETERS:  list_id             - Memory list to search
+ *              Allocation          - Address of allocated memory
+ *              Size                - Size of the allocation
+ *              alloc_type          - MEM_MALLOC or MEM_CALLOC
+ *              Component           - Component type of caller
+ *              Module              - Source file name of caller
+ *              Line                - Line number of caller
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Inserts an element into the global allocation tracking list.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_track_allocation (
+	u32                             list_id,
+	struct acpi_debug_mem_block     *allocation,
+	acpi_size                       size,
+	u8                              alloc_type,
+	u32                             component,
+	char                            *module,
+	u32                             line)
+{
+	struct acpi_memory_list         *mem_list;
+	struct acpi_debug_mem_block     *element;
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_track_allocation", allocation);
+
+
+	if (list_id > ACPI_MEM_LIST_MAX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	mem_list = &acpi_gbl_memory_lists[list_id];
+	status = acpi_ut_acquire_mutex (ACPI_MTX_MEMORY);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	/*
+	 * Search list for this address to make sure it is not already on the list.
+	 * This will catch several kinds of problems.
+	 */
+
+	element = acpi_ut_find_allocation (list_id, allocation);
+	if (element) {
+		ACPI_REPORT_ERROR (("ut_track_allocation: Allocation already present in list! (%p)\n",
+			allocation));
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Element %p Address %p\n", element, allocation));
+
+		goto unlock_and_exit;
+	}
+
+	/* Fill in the instance data. */
+
+	allocation->size      = (u32) size;
+	allocation->alloc_type = alloc_type;
+	allocation->component = component;
+	allocation->line      = line;
+
+	ACPI_STRNCPY (allocation->module, module, ACPI_MAX_MODULE_NAME);
+	allocation->module[ACPI_MAX_MODULE_NAME-1] = 0;
+
+	/* Insert at list head */
+
+	if (mem_list->list_head) {
+		((struct acpi_debug_mem_block *)(mem_list->list_head))->previous = allocation;
+	}
+
+	allocation->next = mem_list->list_head;
+	allocation->previous = NULL;
+
+	mem_list->list_head = allocation;
+
+
+unlock_and_exit:
+	status = acpi_ut_release_mutex (ACPI_MTX_MEMORY);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_remove_allocation
+ *
+ * PARAMETERS:  list_id             - Memory list to search
+ *              Allocation          - Address of allocated memory
+ *              Component           - Component type of caller
+ *              Module              - Source file name of caller
+ *              Line                - Line number of caller
+ *
+ * RETURN:
+ *
+ * DESCRIPTION: Deletes an element from the global allocation tracking list.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_remove_allocation (
+	u32                             list_id,
+	struct acpi_debug_mem_block     *allocation,
+	u32                             component,
+	char                            *module,
+	u32                             line)
+{
+	struct acpi_memory_list         *mem_list;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_remove_allocation");
+
+
+	if (list_id > ACPI_MEM_LIST_MAX) {
+		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	}
+
+	mem_list = &acpi_gbl_memory_lists[list_id];
+	if (NULL == mem_list->list_head) {
+		/* No allocations! */
+
+		_ACPI_REPORT_ERROR (module, line, component,
+				("ut_remove_allocation: Empty allocation list, nothing to free!\n"));
+
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	status = acpi_ut_acquire_mutex (ACPI_MTX_MEMORY);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	/* Unlink */
+
+	if (allocation->previous) {
+		(allocation->previous)->next = allocation->next;
+	}
+	else {
+		mem_list->list_head = allocation->next;
+	}
+
+	if (allocation->next) {
+		(allocation->next)->previous = allocation->previous;
+	}
+
+	/* Mark the segment as deleted */
+
+	ACPI_MEMSET (&allocation->user_space, 0xEA, allocation->size);
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing size 0%X\n", allocation->size));
+
+	status = acpi_ut_release_mutex (ACPI_MTX_MEMORY);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dump_allocation_info
+ *
+ * PARAMETERS:
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print some info about the outstanding allocations.
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+void
+acpi_ut_dump_allocation_info (
+	void)
+{
+/*
+	struct acpi_memory_list         *mem_list;
+*/
+
+	ACPI_FUNCTION_TRACE ("ut_dump_allocation_info");
+
+/*
+	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
+			  ("%30s: %4d (%3d Kb)\n", "Current allocations",
+			  mem_list->current_count,
+			  ROUND_UP_TO_1K (mem_list->current_size)));
+
+	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
+			  ("%30s: %4d (%3d Kb)\n", "Max concurrent allocations",
+			  mem_list->max_concurrent_count,
+			  ROUND_UP_TO_1K (mem_list->max_concurrent_size)));
+
+
+	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
+			  ("%30s: %4d (%3d Kb)\n", "Total (all) internal objects",
+			  running_object_count,
+			  ROUND_UP_TO_1K (running_object_size)));
+
+	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
+			  ("%30s: %4d (%3d Kb)\n", "Total (all) allocations",
+			  running_alloc_count,
+			  ROUND_UP_TO_1K (running_alloc_size)));
+
+
+	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
+			  ("%30s: %4d (%3d Kb)\n", "Current Nodes",
+			  acpi_gbl_current_node_count,
+			  ROUND_UP_TO_1K (acpi_gbl_current_node_size)));
+
+	ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
+			  ("%30s: %4d (%3d Kb)\n", "Max Nodes",
+			  acpi_gbl_max_concurrent_node_count,
+			  ROUND_UP_TO_1K ((acpi_gbl_max_concurrent_node_count * sizeof (struct acpi_namespace_node)))));
+*/
+	return_VOID;
+}
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dump_allocations
+ *
+ * PARAMETERS:  Component           - Component(s) to dump info for.
+ *              Module              - Module to dump info for.  NULL means all.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print a list of all outstanding allocations.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_dump_allocations (
+	u32                             component,
+	char                            *module)
+{
+	struct acpi_debug_mem_block     *element;
+	union acpi_descriptor           *descriptor;
+	u32                             num_outstanding = 0;
+
+
+	ACPI_FUNCTION_TRACE ("ut_dump_allocations");
+
+
+	/*
+	 * Walk the allocation list.
+	 */
+	if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_MEMORY))) {
+		return;
+	}
+
+	element = acpi_gbl_memory_lists[0].list_head;
+	while (element) {
+		if ((element->component & component) &&
+			((module == NULL) || (0 == ACPI_STRCMP (module, element->module)))) {
+			/* Ignore allocated objects that are in a cache */
+
+			descriptor = ACPI_CAST_PTR (union acpi_descriptor, &element->user_space);
+			if (descriptor->descriptor_id != ACPI_DESC_TYPE_CACHED) {
+				acpi_os_printf ("%p Len %04X %9.9s-%d [%s] ",
+						 descriptor, element->size, element->module,
+						 element->line, acpi_ut_get_descriptor_name (descriptor));
+
+				/* Most of the elements will be Operand objects. */
+
+				switch (ACPI_GET_DESCRIPTOR_TYPE (descriptor)) {
+				case ACPI_DESC_TYPE_OPERAND:
+					acpi_os_printf ("%12.12s R%hd",
+							acpi_ut_get_type_name (descriptor->object.common.type),
+							descriptor->object.common.reference_count);
+					break;
+
+				case ACPI_DESC_TYPE_PARSER:
+					acpi_os_printf ("aml_opcode %04hX",
+							descriptor->op.asl.aml_opcode);
+					break;
+
+				case ACPI_DESC_TYPE_NAMED:
+					acpi_os_printf ("%4.4s",
+							acpi_ut_get_node_name (&descriptor->node));
+					break;
+
+				default:
+					break;
+				}
+
+				acpi_os_printf ( "\n");
+				num_outstanding++;
+			}
+		}
+		element = element->next;
+	}
+
+	(void) acpi_ut_release_mutex (ACPI_MTX_MEMORY);
+
+	/* Print summary */
+
+	if (!num_outstanding) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"No outstanding allocations.\n"));
+	}
+	else {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"%d(%X) Outstanding allocations\n",
+			num_outstanding, num_outstanding));
+	}
+
+	return_VOID;
+}
+
+
+#endif  /* #ifdef ACPI_DBG_TRACK_ALLOCATIONS */
+

drivers/acpi/utilities/utcopy.c

@@ -0,0 +1,930 @@
+/******************************************************************************
+ *
+ * Module Name: utcopy - Internal to external object translation utilities
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/amlcode.h>
+
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utcopy")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_isimple_to_esimple
+ *
+ * PARAMETERS:  *internal_object    - Pointer to the object we are examining
+ *              *Buffer             - Where the object is returned
+ *              *space_used         - Where the data length is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to place a simple object in a user
+ *              buffer.
+ *
+ *              The buffer is assumed to have sufficient space for the object.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_copy_isimple_to_esimple (
+	union acpi_operand_object       *internal_object,
+	union acpi_object               *external_object,
+	u8                              *data_space,
+	acpi_size                       *buffer_space_used)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_isimple_to_esimple");
+
+
+	*buffer_space_used = 0;
+
+	/*
+	 * Check for NULL object case (could be an uninitialized
+	 * package element)
+	 */
+	if (!internal_object) {
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	/* Always clear the external object */
+
+	ACPI_MEMSET (external_object, 0, sizeof (union acpi_object));
+
+	/*
+	 * In general, the external object will be the same type as
+	 * the internal object
+	 */
+	external_object->type = ACPI_GET_OBJECT_TYPE (internal_object);
+
+	/* However, only a limited number of external types are supported */
+
+	switch (ACPI_GET_OBJECT_TYPE (internal_object)) {
+	case ACPI_TYPE_STRING:
+
+		external_object->string.pointer = (char *) data_space;
+		external_object->string.length = internal_object->string.length;
+		*buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD ((acpi_size) internal_object->string.length + 1);
+
+		ACPI_MEMCPY ((void *) data_space, (void *) internal_object->string.pointer,
+				 (acpi_size) internal_object->string.length + 1);
+		break;
+
+
+	case ACPI_TYPE_BUFFER:
+
+		external_object->buffer.pointer = data_space;
+		external_object->buffer.length = internal_object->buffer.length;
+		*buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD (internal_object->string.length);
+
+		ACPI_MEMCPY ((void *) data_space, (void *) internal_object->buffer.pointer,
+				 internal_object->buffer.length);
+		break;
+
+
+	case ACPI_TYPE_INTEGER:
+
+		external_object->integer.value = internal_object->integer.value;
+		break;
+
+
+	case ACPI_TYPE_LOCAL_REFERENCE:
+
+		/*
+		 * This is an object reference.  Attempt to dereference it.
+		 */
+		switch (internal_object->reference.opcode) {
+		case AML_INT_NAMEPATH_OP:
+
+			/* For namepath, return the object handle ("reference") */
+
+		default:
+			/*
+			 * Use the object type of "Any" to indicate a reference
+			 * to object containing a handle to an ACPI named object.
+			 */
+			external_object->type = ACPI_TYPE_ANY;
+			external_object->reference.handle = internal_object->reference.node;
+			break;
+		}
+		break;
+
+
+	case ACPI_TYPE_PROCESSOR:
+
+		external_object->processor.proc_id    = internal_object->processor.proc_id;
+		external_object->processor.pblk_address = internal_object->processor.address;
+		external_object->processor.pblk_length = internal_object->processor.length;
+		break;
+
+
+	case ACPI_TYPE_POWER:
+
+		external_object->power_resource.system_level =
+				   internal_object->power_resource.system_level;
+
+		external_object->power_resource.resource_order =
+				   internal_object->power_resource.resource_order;
+		break;
+
+
+	default:
+		/*
+		 * There is no corresponding external object type
+		 */
+		return_ACPI_STATUS (AE_SUPPORT);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ielement_to_eelement
+ *
+ * PARAMETERS:  acpi_pkg_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Copy one package element to another package element
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_ielement_to_eelement (
+	u8                              object_type,
+	union acpi_operand_object       *source_object,
+	union acpi_generic_state        *state,
+	void                            *context)
+{
+	acpi_status                     status = AE_OK;
+	struct acpi_pkg_info            *info = (struct acpi_pkg_info *) context;
+	acpi_size                       object_space;
+	u32                             this_index;
+	union acpi_object               *target_object;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	this_index   = state->pkg.index;
+	target_object = (union acpi_object *)
+			  &((union acpi_object *)(state->pkg.dest_object))->package.elements[this_index];
+
+	switch (object_type) {
+	case ACPI_COPY_TYPE_SIMPLE:
+
+		/*
+		 * This is a simple or null object
+		 */
+		status = acpi_ut_copy_isimple_to_esimple (source_object,
+				  target_object, info->free_space, &object_space);
+		if (ACPI_FAILURE (status)) {
+			return (status);
+		}
+		break;
+
+
+	case ACPI_COPY_TYPE_PACKAGE:
+
+		/*
+		 * Build the package object
+		 */
+		target_object->type             = ACPI_TYPE_PACKAGE;
+		target_object->package.count    = source_object->package.count;
+		target_object->package.elements = ACPI_CAST_PTR (union acpi_object, info->free_space);
+
+		/*
+		 * Pass the new package object back to the package walk routine
+		 */
+		state->pkg.this_target_obj = target_object;
+
+		/*
+		 * Save space for the array of objects (Package elements)
+		 * update the buffer length counter
+		 */
+		object_space = ACPI_ROUND_UP_TO_NATIVE_WORD (
+				   (acpi_size) target_object->package.count * sizeof (union acpi_object));
+		break;
+
+
+	default:
+		return (AE_BAD_PARAMETER);
+	}
+
+	info->free_space  += object_space;
+	info->length      += object_space;
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ipackage_to_epackage
+ *
+ * PARAMETERS:  *internal_object    - Pointer to the object we are returning
+ *              *Buffer             - Where the object is returned
+ *              *space_used         - Where the object length is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to place a package object in a user
+ *              buffer.  A package object by definition contains other objects.
+ *
+ *              The buffer is assumed to have sufficient space for the object.
+ *              The caller must have verified the buffer length needed using the
+ *              acpi_ut_get_object_size function before calling this function.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_copy_ipackage_to_epackage (
+	union acpi_operand_object       *internal_object,
+	u8                              *buffer,
+	acpi_size                       *space_used)
+{
+	union acpi_object               *external_object;
+	acpi_status                     status;
+	struct acpi_pkg_info            info;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_ipackage_to_epackage");
+
+
+	/*
+	 * First package at head of the buffer
+	 */
+	external_object = ACPI_CAST_PTR (union acpi_object, buffer);
+
+	/*
+	 * Free space begins right after the first package
+	 */
+	info.length      = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+	info.free_space  = buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+	info.object_space = 0;
+	info.num_packages = 1;
+
+	external_object->type            = ACPI_GET_OBJECT_TYPE (internal_object);
+	external_object->package.count   = internal_object->package.count;
+	external_object->package.elements = ACPI_CAST_PTR (union acpi_object, info.free_space);
+
+	/*
+	 * Leave room for an array of ACPI_OBJECTS in the buffer
+	 * and move the free space past it
+	 */
+	info.length    += (acpi_size) external_object->package.count *
+			 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+	info.free_space += external_object->package.count *
+			 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+
+	status = acpi_ut_walk_package_tree (internal_object, external_object,
+			 acpi_ut_copy_ielement_to_eelement, &info);
+
+	*space_used = info.length;
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_iobject_to_eobject
+ *
+ * PARAMETERS:  *internal_object    - The internal object to be converted
+ *              *buffer_ptr         - Where the object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to build an API object to be returned to
+ *              the caller.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_iobject_to_eobject (
+	union acpi_operand_object       *internal_object,
+	struct acpi_buffer              *ret_buffer)
+{
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_iobject_to_eobject");
+
+
+	if (ACPI_GET_OBJECT_TYPE (internal_object) == ACPI_TYPE_PACKAGE) {
+		/*
+		 * Package object:  Copy all subobjects (including
+		 * nested packages)
+		 */
+		status = acpi_ut_copy_ipackage_to_epackage (internal_object,
+				  ret_buffer->pointer, &ret_buffer->length);
+	}
+	else {
+		/*
+		 * Build a simple object (no nested objects)
+		 */
+		status = acpi_ut_copy_isimple_to_esimple (internal_object,
+				  (union acpi_object *) ret_buffer->pointer,
+				  ((u8 *) ret_buffer->pointer +
+				  ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object))),
+				  &ret_buffer->length);
+		/*
+		 * build simple does not include the object size in the length
+		 * so we add it in here
+		 */
+		ret_buffer->length += sizeof (union acpi_object);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_esimple_to_isimple
+ *
+ * PARAMETERS:  *external_object   - The external object to be converted
+ *              *internal_object   - Where the internal object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function copies an external object to an internal one.
+ *              NOTE: Pointers can be copied, we don't need to copy data.
+ *              (The pointers have to be valid in our address space no matter
+ *              what we do with them!)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_esimple_to_isimple (
+	union acpi_object               *external_object,
+	union acpi_operand_object       **ret_internal_object)
+{
+	union acpi_operand_object       *internal_object;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_esimple_to_isimple");
+
+
+	/*
+	 * Simple types supported are: String, Buffer, Integer
+	 */
+	switch (external_object->type) {
+	case ACPI_TYPE_STRING:
+	case ACPI_TYPE_BUFFER:
+	case ACPI_TYPE_INTEGER:
+
+		internal_object = acpi_ut_create_internal_object ((u8) external_object->type);
+		if (!internal_object) {
+			return_ACPI_STATUS (AE_NO_MEMORY);
+		}
+		break;
+
+	default:
+		/* All other types are not supported */
+
+		return_ACPI_STATUS (AE_SUPPORT);
+	}
+
+
+	/* Must COPY string and buffer contents */
+
+	switch (external_object->type) {
+	case ACPI_TYPE_STRING:
+
+		internal_object->string.pointer =
+			ACPI_MEM_CALLOCATE ((acpi_size) external_object->string.length + 1);
+		if (!internal_object->string.pointer) {
+			goto error_exit;
+		}
+
+		ACPI_MEMCPY (internal_object->string.pointer,
+				  external_object->string.pointer,
+				  external_object->string.length);
+
+		internal_object->string.length = external_object->string.length;
+		break;
+
+
+	case ACPI_TYPE_BUFFER:
+
+		internal_object->buffer.pointer =
+			ACPI_MEM_CALLOCATE (external_object->buffer.length);
+		if (!internal_object->buffer.pointer) {
+			goto error_exit;
+		}
+
+		ACPI_MEMCPY (internal_object->buffer.pointer,
+				  external_object->buffer.pointer,
+				  external_object->buffer.length);
+
+		internal_object->buffer.length = external_object->buffer.length;
+		break;
+
+
+	case ACPI_TYPE_INTEGER:
+
+		internal_object->integer.value  = external_object->integer.value;
+		break;
+
+	default:
+		/* Other types can't get here */
+		break;
+	}
+
+	*ret_internal_object = internal_object;
+	return_ACPI_STATUS (AE_OK);
+
+
+error_exit:
+	acpi_ut_remove_reference (internal_object);
+	return_ACPI_STATUS (AE_NO_MEMORY);
+}
+
+
+#ifdef ACPI_FUTURE_IMPLEMENTATION
+
+/* Code to convert packages that are parameters to control methods */
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_epackage_to_ipackage
+ *
+ * PARAMETERS:  *internal_object   - Pointer to the object we are returning
+ *              *Buffer            - Where the object is returned
+ *              *space_used        - Where the length of the object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to place a package object in a user
+ *              buffer.  A package object by definition contains other objects.
+ *
+ *              The buffer is assumed to have sufficient space for the object.
+ *              The caller must have verified the buffer length needed using the
+ *              acpi_ut_get_object_size function before calling this function.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_copy_epackage_to_ipackage (
+	union acpi_operand_object       *internal_object,
+	u8                              *buffer,
+	u32                             *space_used)
+{
+	u8                              *free_space;
+	union acpi_object               *external_object;
+	u32                             length = 0;
+	u32                             this_index;
+	u32                             object_space = 0;
+	union acpi_operand_object       *this_internal_obj;
+	union acpi_object               *this_external_obj;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_epackage_to_ipackage");
+
+
+	/*
+	 * First package at head of the buffer
+	 */
+	external_object = (union acpi_object *)buffer;
+
+	/*
+	 * Free space begins right after the first package
+	 */
+	free_space = buffer + sizeof(union acpi_object);
+
+
+	external_object->type              = ACPI_GET_OBJECT_TYPE (internal_object);
+	external_object->package.count     = internal_object->package.count;
+	external_object->package.elements  = (union acpi_object *)free_space;
+
+	/*
+	 * Build an array of ACPI_OBJECTS in the buffer
+	 * and move the free space past it
+	 */
+	free_space += external_object->package.count * sizeof(union acpi_object);
+
+
+	/* Call walk_package */
+
+}
+
+#endif /* Future implementation */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_eobject_to_iobject
+ *
+ * PARAMETERS:  *internal_object   - The external object to be converted
+ *              *buffer_ptr     - Where the internal object is returned
+ *
+ * RETURN:      Status          - the status of the call
+ *
+ * DESCRIPTION: Converts an external object to an internal object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_eobject_to_iobject (
+	union acpi_object               *external_object,
+	union acpi_operand_object       **internal_object)
+{
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_eobject_to_iobject");
+
+
+	if (external_object->type == ACPI_TYPE_PACKAGE) {
+		/*
+		 * Packages as external input to control methods are not supported,
+		 */
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Packages as parameters not implemented!\n"));
+
+		return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
+	}
+
+	else {
+		/*
+		 * Build a simple object (no nested objects)
+		 */
+		status = acpi_ut_copy_esimple_to_isimple (external_object, internal_object);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_simple_object
+ *
+ * PARAMETERS:  source_desc         - The internal object to be copied
+ *              dest_desc           - New target object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Simple copy of one internal object to another.  Reference count
+ *              of the destination object is preserved.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_simple_object (
+	union acpi_operand_object       *source_desc,
+	union acpi_operand_object       *dest_desc)
+{
+	u16                             reference_count;
+	union acpi_operand_object       *next_object;
+
+
+	/* Save fields from destination that we don't want to overwrite */
+
+	reference_count = dest_desc->common.reference_count;
+	next_object = dest_desc->common.next_object;
+
+	/* Copy the entire source object over the destination object*/
+
+	ACPI_MEMCPY ((char *) dest_desc, (char *) source_desc,
+			  sizeof (union acpi_operand_object));
+
+	/* Restore the saved fields */
+
+	dest_desc->common.reference_count = reference_count;
+	dest_desc->common.next_object = next_object;
+
+	/* Handle the objects with extra data */
+
+	switch (ACPI_GET_OBJECT_TYPE (dest_desc)) {
+	case ACPI_TYPE_BUFFER:
+
+		dest_desc->buffer.node = NULL;
+		dest_desc->common.flags = source_desc->common.flags;
+
+		/*
+		 * Allocate and copy the actual buffer if and only if:
+		 * 1) There is a valid buffer pointer
+		 * 2) The buffer is not static (not in an ACPI table) (in this case,
+		 *    the actual pointer was already copied above)
+		 */
+		if ((source_desc->buffer.pointer) &&
+			(!(source_desc->common.flags & AOPOBJ_STATIC_POINTER))) {
+			dest_desc->buffer.pointer = NULL;
+
+			/* Create an actual buffer only if length > 0 */
+
+			if (source_desc->buffer.length) {
+				dest_desc->buffer.pointer =
+					ACPI_MEM_ALLOCATE (source_desc->buffer.length);
+				if (!dest_desc->buffer.pointer) {
+					return (AE_NO_MEMORY);
+				}
+
+				/* Copy the actual buffer data */
+
+				ACPI_MEMCPY (dest_desc->buffer.pointer,
+						source_desc->buffer.pointer,
+						source_desc->buffer.length);
+			}
+		}
+		break;
+
+	case ACPI_TYPE_STRING:
+
+		/*
+		 * Allocate and copy the actual string if and only if:
+		 * 1) There is a valid string pointer
+		 * 2) The string is not static (not in an ACPI table) (in this case,
+		 *    the actual pointer was already copied above)
+		 */
+		if ((source_desc->string.pointer) &&
+			(!(source_desc->common.flags & AOPOBJ_STATIC_POINTER))) {
+			dest_desc->string.pointer =
+				ACPI_MEM_ALLOCATE ((acpi_size) source_desc->string.length + 1);
+			if (!dest_desc->string.pointer) {
+				return (AE_NO_MEMORY);
+			}
+
+			ACPI_MEMCPY (dest_desc->string.pointer, source_desc->string.pointer,
+					  (acpi_size) source_desc->string.length + 1);
+		}
+		break;
+
+	case ACPI_TYPE_LOCAL_REFERENCE:
+		/*
+		 * We copied the reference object, so we now must add a reference
+		 * to the object pointed to by the reference
+		 */
+		acpi_ut_add_reference (source_desc->reference.object);
+		break;
+
+	default:
+		/* Nothing to do for other simple objects */
+		break;
+	}
+
+	return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ielement_to_ielement
+ *
+ * PARAMETERS:  acpi_pkg_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Copy one package element to another package element
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_ielement_to_ielement (
+	u8                              object_type,
+	union acpi_operand_object       *source_object,
+	union acpi_generic_state        *state,
+	void                            *context)
+{
+	acpi_status                     status = AE_OK;
+	u32                             this_index;
+	union acpi_operand_object       **this_target_ptr;
+	union acpi_operand_object       *target_object;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	this_index    = state->pkg.index;
+	this_target_ptr = (union acpi_operand_object **)
+			   &state->pkg.dest_object->package.elements[this_index];
+
+	switch (object_type) {
+	case ACPI_COPY_TYPE_SIMPLE:
+
+		/* A null source object indicates a (legal) null package element */
+
+		if (source_object) {
+			/*
+			 * This is a simple object, just copy it
+			 */
+			target_object = acpi_ut_create_internal_object (
+					   ACPI_GET_OBJECT_TYPE (source_object));
+			if (!target_object) {
+				return (AE_NO_MEMORY);
+			}
+
+			status = acpi_ut_copy_simple_object (source_object, target_object);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			*this_target_ptr = target_object;
+		}
+		else {
+			/* Pass through a null element */
+
+			*this_target_ptr = NULL;
+		}
+		break;
+
+
+	case ACPI_COPY_TYPE_PACKAGE:
+
+		/*
+		 * This object is a package - go down another nesting level
+		 * Create and build the package object
+		 */
+		target_object = acpi_ut_create_internal_object (ACPI_TYPE_PACKAGE);
+		if (!target_object) {
+			return (AE_NO_MEMORY);
+		}
+
+		target_object->package.count = source_object->package.count;
+		target_object->common.flags = source_object->common.flags;
+
+		/*
+		 * Create the object array
+		 */
+		target_object->package.elements =
+			ACPI_MEM_CALLOCATE (((acpi_size) source_object->package.count + 1) *
+					 sizeof (void *));
+		if (!target_object->package.elements) {
+			status = AE_NO_MEMORY;
+			goto error_exit;
+		}
+
+		/*
+		 * Pass the new package object back to the package walk routine
+		 */
+		state->pkg.this_target_obj = target_object;
+
+		/*
+		 * Store the object pointer in the parent package object
+		 */
+		*this_target_ptr = target_object;
+		break;
+
+
+	default:
+		return (AE_BAD_PARAMETER);
+	}
+
+	return (status);
+
+error_exit:
+	acpi_ut_remove_reference (target_object);
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ipackage_to_ipackage
+ *
+ * PARAMETERS:  *source_obj     - Pointer to the source package object
+ *              *dest_obj       - Where the internal object is returned
+ *
+ * RETURN:      Status          - the status of the call
+ *
+ * DESCRIPTION: This function is called to copy an internal package object
+ *              into another internal package object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_ipackage_to_ipackage (
+	union acpi_operand_object       *source_obj,
+	union acpi_operand_object       *dest_obj,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_ipackage_to_ipackage");
+
+
+	dest_obj->common.type   = ACPI_GET_OBJECT_TYPE (source_obj);
+	dest_obj->common.flags  = source_obj->common.flags;
+	dest_obj->package.count = source_obj->package.count;
+
+	/*
+	 * Create the object array and walk the source package tree
+	 */
+	dest_obj->package.elements = ACPI_MEM_CALLOCATE (
+			   ((acpi_size) source_obj->package.count + 1) *
+			   sizeof (void *));
+	if (!dest_obj->package.elements) {
+		ACPI_REPORT_ERROR (
+			("aml_build_copy_internal_package_object: Package allocation failure\n"));
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	/*
+	 * Copy the package element-by-element by walking the package "tree".
+	 * This handles nested packages of arbitrary depth.
+	 */
+	status = acpi_ut_walk_package_tree (source_obj, dest_obj,
+			 acpi_ut_copy_ielement_to_ielement, walk_state);
+	if (ACPI_FAILURE (status)) {
+		/* On failure, delete the destination package object */
+
+		acpi_ut_remove_reference (dest_obj);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_iobject_to_iobject
+ *
+ * PARAMETERS:  walk_state          - Current walk state
+ *              source_desc         - The internal object to be copied
+ *              dest_desc           - Where the copied object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Copy an internal object to a new internal object
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_iobject_to_iobject (
+	union acpi_operand_object       *source_desc,
+	union acpi_operand_object       **dest_desc,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_iobject_to_iobject");
+
+
+	/* Create the top level object */
+
+	*dest_desc = acpi_ut_create_internal_object (ACPI_GET_OBJECT_TYPE (source_desc));
+	if (!*dest_desc) {
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	/* Copy the object and possible subobjects */
+
+	if (ACPI_GET_OBJECT_TYPE (source_desc) == ACPI_TYPE_PACKAGE) {
+		status = acpi_ut_copy_ipackage_to_ipackage (source_desc, *dest_desc,
+				  walk_state);
+	}
+	else {
+		status = acpi_ut_copy_simple_object (source_desc, *dest_desc);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+

drivers/acpi/utilities/utdebug.c

@@ -0,0 +1,624 @@
+/******************************************************************************
+ *
+ * Module Name: utdebug - Debug print routines
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+#include <linux/module.h>
+
+#include <acpi/acpi.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utdebug")
+
+
+#ifdef ACPI_DEBUG_OUTPUT
+
+static u32   acpi_gbl_prev_thread_id = 0xFFFFFFFF;
+static char     *acpi_gbl_fn_entry_str = "----Entry";
+static char     *acpi_gbl_fn_exit_str = "----Exit-";
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_init_stack_ptr_trace
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Save the current stack pointer
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_init_stack_ptr_trace (
+	void)
+{
+	u32                         current_sp;
+
+
+	acpi_gbl_entry_stack_pointer = ACPI_PTR_DIFF (&current_sp, NULL);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_track_stack_ptr
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Save the current stack pointer
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_track_stack_ptr (
+	void)
+{
+	acpi_size                   current_sp;
+
+
+	current_sp = ACPI_PTR_DIFF (&current_sp, NULL);
+
+	if (current_sp < acpi_gbl_lowest_stack_pointer) {
+		acpi_gbl_lowest_stack_pointer = current_sp;
+	}
+
+	if (acpi_gbl_nesting_level > acpi_gbl_deepest_nesting) {
+		acpi_gbl_deepest_nesting = acpi_gbl_nesting_level;
+	}
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_debug_print
+ *
+ * PARAMETERS:  debug_level         - Requested debug print level
+ *              proc_name           - Caller's procedure name
+ *              module_name         - Caller's module name (for error output)
+ *              line_number         - Caller's line number (for error output)
+ *              component_id        - Caller's component ID (for error output)
+ *
+ *              Format              - Printf format field
+ *              ...                 - Optional printf arguments
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print error message with prefix consisting of the module name,
+ *              line number, and component ID.
+ *
+ ****************************************************************************/
+
+void  ACPI_INTERNAL_VAR_XFACE
+acpi_ut_debug_print (
+	u32                             requested_debug_level,
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	char                            *format,
+	...)
+{
+	u32                             thread_id;
+	va_list                 args;
+
+
+	/*
+	 * Stay silent if the debug level or component ID is disabled
+	 */
+	if (!(requested_debug_level & acpi_dbg_level) ||
+		!(dbg_info->component_id & acpi_dbg_layer)) {
+		return;
+	}
+
+	/*
+	 * Thread tracking and context switch notification
+	 */
+	thread_id = acpi_os_get_thread_id ();
+
+	if (thread_id != acpi_gbl_prev_thread_id) {
+		if (ACPI_LV_THREADS & acpi_dbg_level) {
+			acpi_os_printf ("\n**** Context Switch from TID %X to TID %X ****\n\n",
+				acpi_gbl_prev_thread_id, thread_id);
+		}
+
+		acpi_gbl_prev_thread_id = thread_id;
+	}
+
+	/*
+	 * Display the module name, current line number, thread ID (if requested),
+	 * current procedure nesting level, and the current procedure name
+	 */
+	acpi_os_printf ("%8s-%04ld ", dbg_info->module_name, line_number);
+
+	if (ACPI_LV_THREADS & acpi_dbg_level) {
+		acpi_os_printf ("[%04lX] ", thread_id);
+	}
+
+	acpi_os_printf ("[%02ld] %-22.22s: ", acpi_gbl_nesting_level, dbg_info->proc_name);
+
+	va_start (args, format);
+	acpi_os_vprintf (format, args);
+}
+EXPORT_SYMBOL(acpi_ut_debug_print);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_debug_print_raw
+ *
+ * PARAMETERS:  requested_debug_level - Requested debug print level
+ *              line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *              Format              - Printf format field
+ *              ...                 - Optional printf arguments
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print message with no headers.  Has same interface as
+ *              debug_print so that the same macros can be used.
+ *
+ ****************************************************************************/
+
+void  ACPI_INTERNAL_VAR_XFACE
+acpi_ut_debug_print_raw (
+	u32                             requested_debug_level,
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	char                            *format,
+	...)
+{
+	va_list                 args;
+
+
+	if (!(requested_debug_level & acpi_dbg_level) ||
+		!(dbg_info->component_id & acpi_dbg_layer)) {
+		return;
+	}
+
+	va_start (args, format);
+	acpi_os_vprintf (format, args);
+}
+EXPORT_SYMBOL(acpi_ut_debug_print_raw);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_trace
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function entry trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_trace (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info)
+{
+
+	acpi_gbl_nesting_level++;
+	acpi_ut_track_stack_ptr ();
+
+	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+			"%s\n", acpi_gbl_fn_entry_str);
+}
+EXPORT_SYMBOL(acpi_ut_trace);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_trace_ptr
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *              Pointer             - Pointer to display
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function entry trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_trace_ptr (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	void                            *pointer)
+{
+	acpi_gbl_nesting_level++;
+	acpi_ut_track_stack_ptr ();
+
+	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+			"%s %p\n", acpi_gbl_fn_entry_str, pointer);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_trace_str
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *              String              - Additional string to display
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function entry trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_trace_str (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	char                            *string)
+{
+
+	acpi_gbl_nesting_level++;
+	acpi_ut_track_stack_ptr ();
+
+	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+			"%s %s\n", acpi_gbl_fn_entry_str, string);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_trace_u32
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *              Integer             - Integer to display
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function entry trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_trace_u32 (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	u32                             integer)
+{
+
+	acpi_gbl_nesting_level++;
+	acpi_ut_track_stack_ptr ();
+
+	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+			"%s %08X\n", acpi_gbl_fn_entry_str, integer);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_exit
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_exit (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info)
+{
+
+	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+			"%s\n", acpi_gbl_fn_exit_str);
+
+	acpi_gbl_nesting_level--;
+}
+EXPORT_SYMBOL(acpi_ut_exit);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_status_exit
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *              Status              - Exit status code
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level. Prints exit status also.
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_status_exit (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	acpi_status                     status)
+{
+
+	if (ACPI_SUCCESS (status)) {
+		acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+				"%s %s\n", acpi_gbl_fn_exit_str,
+				acpi_format_exception (status));
+	}
+	else {
+		acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+				"%s ****Exception****: %s\n", acpi_gbl_fn_exit_str,
+				acpi_format_exception (status));
+	}
+
+	acpi_gbl_nesting_level--;
+}
+EXPORT_SYMBOL(acpi_ut_status_exit);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_value_exit
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *              Value               - Value to be printed with exit msg
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level. Prints exit value also.
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_value_exit (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	acpi_integer                    value)
+{
+
+	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+			"%s %8.8X%8.8X\n", acpi_gbl_fn_exit_str,
+			ACPI_FORMAT_UINT64 (value));
+
+	acpi_gbl_nesting_level--;
+}
+EXPORT_SYMBOL(acpi_ut_value_exit);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_ptr_exit
+ *
+ * PARAMETERS:  line_number         - Caller's line number
+ *              dbg_info            - Contains:
+ *                  proc_name           - Caller's procedure name
+ *                  module_name         - Caller's module name
+ *                  component_id        - Caller's component ID
+ *              Value               - Value to be printed with exit msg
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Function exit trace.  Prints only if TRACE_FUNCTIONS bit is
+ *              set in debug_level. Prints exit value also.
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_ptr_exit (
+	u32                             line_number,
+	struct acpi_debug_print_info    *dbg_info,
+	u8                              *ptr)
+{
+
+	acpi_ut_debug_print (ACPI_LV_FUNCTIONS, line_number, dbg_info,
+			"%s %p\n", acpi_gbl_fn_exit_str, ptr);
+
+	acpi_gbl_nesting_level--;
+}
+
+#endif
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dump_buffer
+ *
+ * PARAMETERS:  Buffer              - Buffer to dump
+ *              Count               - Amount to dump, in bytes
+ *              Display             - BYTE, WORD, DWORD, or QWORD display
+ *              component_iD        - Caller's component ID
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Generic dump buffer in both hex and ascii.
+ *
+ ****************************************************************************/
+
+void
+acpi_ut_dump_buffer (
+	u8                              *buffer,
+	u32                             count,
+	u32                             display,
+	u32                             component_id)
+{
+	acpi_native_uint                i = 0;
+	acpi_native_uint                j;
+	u32                             temp32;
+	u8                              buf_char;
+
+
+	/* Only dump the buffer if tracing is enabled */
+
+	if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
+		(component_id & acpi_dbg_layer))) {
+		return;
+	}
+
+	if ((count < 4) || (count & 0x01)) {
+		display = DB_BYTE_DISPLAY;
+	}
+
+	acpi_os_printf ("\nOffset Value\n");
+
+	/*
+	 * Nasty little dump buffer routine!
+	 */
+	while (i < count) {
+		/* Print current offset */
+
+		acpi_os_printf ("%05X  ", (u32) i);
+
+		/* Print 16 hex chars */
+
+		for (j = 0; j < 16;) {
+			if (i + j >= count) {
+				acpi_os_printf ("\n");
+				return;
+			}
+
+			/* Make sure that the s8 doesn't get sign-extended! */
+
+			switch (display) {
+			/* Default is BYTE display */
+
+			default:
+
+				acpi_os_printf ("%02X ",
+						*((u8 *) &buffer[i + j]));
+				j += 1;
+				break;
+
+
+			case DB_WORD_DISPLAY:
+
+				ACPI_MOVE_16_TO_32 (&temp32, &buffer[i + j]);
+				acpi_os_printf ("%04X ", temp32);
+				j += 2;
+				break;
+
+
+			case DB_DWORD_DISPLAY:
+
+				ACPI_MOVE_32_TO_32 (&temp32, &buffer[i + j]);
+				acpi_os_printf ("%08X ", temp32);
+				j += 4;
+				break;
+
+
+			case DB_QWORD_DISPLAY:
+
+				ACPI_MOVE_32_TO_32 (&temp32, &buffer[i + j]);
+				acpi_os_printf ("%08X", temp32);
+
+				ACPI_MOVE_32_TO_32 (&temp32, &buffer[i + j + 4]);
+				acpi_os_printf ("%08X ", temp32);
+				j += 8;
+				break;
+			}
+		}
+
+		/*
+		 * Print the ASCII equivalent characters
+		 * But watch out for the bad unprintable ones...
+		 */
+		for (j = 0; j < 16; j++) {
+			if (i + j >= count) {
+				acpi_os_printf ("\n");
+				return;
+			}
+
+			buf_char = buffer[i + j];
+			if ((buf_char > 0x1F && buf_char < 0x2E) ||
+				(buf_char > 0x2F && buf_char < 0x61) ||
+				(buf_char > 0x60 && buf_char < 0x7F)) {
+				acpi_os_printf ("%c", buf_char);
+			}
+			else {
+				acpi_os_printf (".");
+			}
+		}
+
+		/* Done with that line. */
+
+		acpi_os_printf ("\n");
+		i += 16;
+	}
+
+	return;
+}
+

drivers/acpi/utilities/utdelete.c

@@ -0,0 +1,700 @@
+/*******************************************************************************
+ *
+ * Module Name: utdelete - object deletion and reference count utilities
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acinterp.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acevents.h>
+#include <acpi/amlcode.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utdelete")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_internal_obj
+ *
+ * PARAMETERS:  *Object        - Pointer to the list to be deleted
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Low level object deletion, after reference counts have been
+ *              updated (All reference counts, including sub-objects!)
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_internal_obj (
+	union acpi_operand_object       *object)
+{
+	void                            *obj_pointer = NULL;
+	union acpi_operand_object       *handler_desc;
+	union acpi_operand_object       *second_desc;
+	union acpi_operand_object       *next_desc;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_delete_internal_obj", object);
+
+
+	if (!object) {
+		return_VOID;
+	}
+
+	/*
+	 * Must delete or free any pointers within the object that are not
+	 * actual ACPI objects (for example, a raw buffer pointer).
+	 */
+	switch (ACPI_GET_OBJECT_TYPE (object)) {
+	case ACPI_TYPE_STRING:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** String %p, ptr %p\n",
+			object, object->string.pointer));
+
+		/* Free the actual string buffer */
+
+		if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
+			/* But only if it is NOT a pointer into an ACPI table */
+
+			obj_pointer = object->string.pointer;
+		}
+		break;
+
+
+	case ACPI_TYPE_BUFFER:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** Buffer %p, ptr %p\n",
+			object, object->buffer.pointer));
+
+		/* Free the actual buffer */
+
+		if (!(object->common.flags & AOPOBJ_STATIC_POINTER)) {
+			/* But only if it is NOT a pointer into an ACPI table */
+
+			obj_pointer = object->buffer.pointer;
+		}
+		break;
+
+
+	case ACPI_TYPE_PACKAGE:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, " **** Package of count %X\n",
+			object->package.count));
+
+		/*
+		 * Elements of the package are not handled here, they are deleted
+		 * separately
+		 */
+
+		/* Free the (variable length) element pointer array */
+
+		obj_pointer = object->package.elements;
+		break;
+
+
+	case ACPI_TYPE_DEVICE:
+
+		if (object->device.gpe_block) {
+			(void) acpi_ev_delete_gpe_block (object->device.gpe_block);
+		}
+
+		/* Walk the handler list for this device */
+
+		handler_desc = object->device.handler;
+		while (handler_desc) {
+			next_desc = handler_desc->address_space.next;
+			acpi_ut_remove_reference (handler_desc);
+			handler_desc = next_desc;
+		}
+		break;
+
+
+	case ACPI_TYPE_MUTEX:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "***** Mutex %p, Semaphore %p\n",
+			object, object->mutex.semaphore));
+
+		acpi_ex_unlink_mutex (object);
+		(void) acpi_os_delete_semaphore (object->mutex.semaphore);
+		break;
+
+
+	case ACPI_TYPE_EVENT:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "***** Event %p, Semaphore %p\n",
+			object, object->event.semaphore));
+
+		(void) acpi_os_delete_semaphore (object->event.semaphore);
+		object->event.semaphore = NULL;
+		break;
+
+
+	case ACPI_TYPE_METHOD:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "***** Method %p\n", object));
+
+		/* Delete the method semaphore if it exists */
+
+		if (object->method.semaphore) {
+			(void) acpi_os_delete_semaphore (object->method.semaphore);
+			object->method.semaphore = NULL;
+		}
+		break;
+
+
+	case ACPI_TYPE_REGION:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "***** Region %p\n", object));
+
+		second_desc = acpi_ns_get_secondary_object (object);
+		if (second_desc) {
+			/*
+			 * Free the region_context if and only if the handler is one of the
+			 * default handlers -- and therefore, we created the context object
+			 * locally, it was not created by an external caller.
+			 */
+			handler_desc = object->region.handler;
+			if (handler_desc) {
+				if (handler_desc->address_space.hflags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
+					obj_pointer = second_desc->extra.region_context;
+				}
+
+				acpi_ut_remove_reference (handler_desc);
+			}
+
+			/* Now we can free the Extra object */
+
+			acpi_ut_delete_object_desc (second_desc);
+		}
+		break;
+
+
+	case ACPI_TYPE_BUFFER_FIELD:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "***** Buffer Field %p\n", object));
+
+		second_desc = acpi_ns_get_secondary_object (object);
+		if (second_desc) {
+			acpi_ut_delete_object_desc (second_desc);
+		}
+		break;
+
+
+	default:
+		break;
+	}
+
+	/* Free any allocated memory (pointer within the object) found above */
+
+	if (obj_pointer) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object Subptr %p\n",
+				obj_pointer));
+		ACPI_MEM_FREE (obj_pointer);
+	}
+
+	/* Now the object can be safely deleted */
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n",
+			object, acpi_ut_get_object_type_name (object)));
+
+	acpi_ut_delete_object_desc (object);
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_internal_object_list
+ *
+ * PARAMETERS:  *obj_list       - Pointer to the list to be deleted
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: This function deletes an internal object list, including both
+ *              simple objects and package objects
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_internal_object_list (
+	union acpi_operand_object       **obj_list)
+{
+	union acpi_operand_object       **internal_obj;
+
+
+	ACPI_FUNCTION_TRACE ("ut_delete_internal_object_list");
+
+
+	/* Walk the null-terminated internal list */
+
+	for (internal_obj = obj_list; *internal_obj; internal_obj++) {
+		acpi_ut_remove_reference (*internal_obj);
+	}
+
+	/* Free the combined parameter pointer list and object array */
+
+	ACPI_MEM_FREE (obj_list);
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_update_ref_count
+ *
+ * PARAMETERS:  *Object         - Object whose ref count is to be updated
+ *              Action          - What to do
+ *
+ * RETURN:      New ref count
+ *
+ * DESCRIPTION: Modify the ref count and return it.
+ *
+ ******************************************************************************/
+
+static void
+acpi_ut_update_ref_count (
+	union acpi_operand_object       *object,
+	u32                             action)
+{
+	u16                             count;
+	u16                             new_count;
+
+
+	ACPI_FUNCTION_NAME ("ut_update_ref_count");
+
+
+	if (!object) {
+		return;
+	}
+
+	count = object->common.reference_count;
+	new_count = count;
+
+	/*
+	 * Perform the reference count action (increment, decrement, or force delete)
+	 */
+	switch (action) {
+
+	case REF_INCREMENT:
+
+		new_count++;
+		object->common.reference_count = new_count;
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Obj %p Refs=%X, [Incremented]\n",
+			object, new_count));
+		break;
+
+
+	case REF_DECREMENT:
+
+		if (count < 1) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Obj %p Refs=%X, can't decrement! (Set to 0)\n",
+				object, new_count));
+
+			new_count = 0;
+		}
+		else {
+			new_count--;
+
+			ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Obj %p Refs=%X, [Decremented]\n",
+				object, new_count));
+		}
+
+		if (ACPI_GET_OBJECT_TYPE (object) == ACPI_TYPE_METHOD) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Method Obj %p Refs=%X, [Decremented]\n",
+				object, new_count));
+		}
+
+		object->common.reference_count = new_count;
+		if (new_count == 0) {
+			acpi_ut_delete_internal_obj (object);
+		}
+
+		break;
+
+
+	case REF_FORCE_DELETE:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Obj %p Refs=%X, Force delete! (Set to 0)\n",
+			object, count));
+
+		new_count = 0;
+		object->common.reference_count = new_count;
+		acpi_ut_delete_internal_obj (object);
+		break;
+
+
+	default:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown action (%X)\n", action));
+		break;
+	}
+
+	/*
+	 * Sanity check the reference count, for debug purposes only.
+	 * (A deleted object will have a huge reference count)
+	 */
+	if (count > ACPI_MAX_REFERENCE_COUNT) {
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_WARN,
+			"**** Warning **** Large Reference Count (%X) in object %p\n\n",
+			count, object));
+	}
+
+	return;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_update_object_reference
+ *
+ * PARAMETERS:  *Object             - Increment ref count for this object
+ *                                    and all sub-objects
+ *              Action              - Either REF_INCREMENT or REF_DECREMENT or
+ *                                    REF_FORCE_DELETE
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Increment the object reference count
+ *
+ * Object references are incremented when:
+ * 1) An object is attached to a Node (namespace object)
+ * 2) An object is copied (all subobjects must be incremented)
+ *
+ * Object references are decremented when:
+ * 1) An object is detached from an Node
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_update_object_reference (
+	union acpi_operand_object       *object,
+	u16                             action)
+{
+	acpi_status                     status;
+	u32                             i;
+	union acpi_generic_state         *state_list = NULL;
+	union acpi_generic_state         *state;
+	union acpi_operand_object        *tmp;
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_update_object_reference", object);
+
+
+	/* Ignore a null object ptr */
+
+	if (!object) {
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	/* Make sure that this isn't a namespace handle */
+
+	if (ACPI_GET_DESCRIPTOR_TYPE (object) == ACPI_DESC_TYPE_NAMED) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Object %p is NS handle\n", object));
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	state = acpi_ut_create_update_state (object, action);
+
+	while (state) {
+		object = state->update.object;
+		action = state->update.value;
+		acpi_ut_delete_generic_state (state);
+
+		/*
+		 * All sub-objects must have their reference count incremented also.
+		 * Different object types have different subobjects.
+		 */
+		switch (ACPI_GET_OBJECT_TYPE (object)) {
+		case ACPI_TYPE_DEVICE:
+
+			tmp = object->device.system_notify;
+			if (tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT)
+				object->device.system_notify = NULL;
+			acpi_ut_update_ref_count (tmp, action);
+
+			tmp = object->device.device_notify;
+			if (tmp && (tmp->common.reference_count <= 1) && action == REF_DECREMENT)
+				object->device.device_notify = NULL;
+			acpi_ut_update_ref_count (tmp, action);
+
+			break;
+
+
+		case ACPI_TYPE_PACKAGE:
+
+			/*
+			 * We must update all the sub-objects of the package
+			 * (Each of whom may have their own sub-objects, etc.
+			 */
+			for (i = 0; i < object->package.count; i++) {
+				/*
+				 * Push each element onto the stack for later processing.
+				 * Note: There can be null elements within the package,
+				 * these are simply ignored
+				 */
+				status = acpi_ut_create_update_state_and_push (
+						 object->package.elements[i], action, &state_list);
+				if (ACPI_FAILURE (status)) {
+					goto error_exit;
+				}
+
+				tmp = object->package.elements[i];
+				if (tmp && (tmp->common.reference_count <= 1)  && action == REF_DECREMENT)
+					object->package.elements[i] = NULL;
+			}
+			break;
+
+
+		case ACPI_TYPE_BUFFER_FIELD:
+
+			status = acpi_ut_create_update_state_and_push (
+					 object->buffer_field.buffer_obj, action, &state_list);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			tmp = object->buffer_field.buffer_obj;
+			if ( tmp && (tmp->common.reference_count <= 1)  && action == REF_DECREMENT)
+				object->buffer_field.buffer_obj = NULL;
+			break;
+
+
+		case ACPI_TYPE_LOCAL_REGION_FIELD:
+
+			status = acpi_ut_create_update_state_and_push (
+					 object->field.region_obj, action, &state_list);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			tmp = object->field.region_obj;
+			if ( tmp && (tmp->common.reference_count <= 1)  && action == REF_DECREMENT)
+				object->field.region_obj = NULL;
+		   break;
+
+
+		case ACPI_TYPE_LOCAL_BANK_FIELD:
+
+			status = acpi_ut_create_update_state_and_push (
+					 object->bank_field.bank_obj, action, &state_list);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			tmp = object->bank_field.bank_obj;
+			if ( tmp && (tmp->common.reference_count <= 1)  && action == REF_DECREMENT)
+				object->bank_field.bank_obj = NULL;
+
+			status = acpi_ut_create_update_state_and_push (
+					 object->bank_field.region_obj, action, &state_list);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			tmp = object->bank_field.region_obj;
+			if ( tmp && (tmp->common.reference_count <= 1)  && action == REF_DECREMENT)
+				object->bank_field.region_obj = NULL;
+			break;
+
+
+		case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
+			status = acpi_ut_create_update_state_and_push (
+					 object->index_field.index_obj, action, &state_list);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			tmp = object->index_field.index_obj;
+			if ( tmp && (tmp->common.reference_count <= 1)  && action == REF_DECREMENT)
+				object->index_field.index_obj = NULL;
+
+			status = acpi_ut_create_update_state_and_push (
+					 object->index_field.data_obj, action, &state_list);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			tmp = object->index_field.data_obj;
+			if ( tmp && (tmp->common.reference_count <= 1)  && action == REF_DECREMENT)
+				object->index_field.data_obj = NULL;
+			break;
+
+
+		case ACPI_TYPE_LOCAL_REFERENCE:
+
+			/*
+			 * The target of an Index (a package, string, or buffer) must track
+			 * changes to the ref count of the index.
+			 */
+			if (object->reference.opcode == AML_INDEX_OP) {
+				status = acpi_ut_create_update_state_and_push (
+						 object->reference.object, action, &state_list);
+				if (ACPI_FAILURE (status)) {
+					goto error_exit;
+				}
+			}
+			break;
+
+
+		case ACPI_TYPE_REGION:
+		default:
+
+			/* No subobjects */
+			break;
+		}
+
+		/*
+		 * Now we can update the count in the main object.  This can only
+		 * happen after we update the sub-objects in case this causes the
+		 * main object to be deleted.
+		 */
+		acpi_ut_update_ref_count (object, action);
+
+		/* Move on to the next object to be updated */
+
+		state = acpi_ut_pop_generic_state (&state_list);
+	}
+
+	return_ACPI_STATUS (AE_OK);
+
+
+error_exit:
+
+	ACPI_REPORT_ERROR (("Could not update object reference count, %s\n",
+		acpi_format_exception (status)));
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_add_reference
+ *
+ * PARAMETERS:  *Object        - Object whose reference count is to be
+ *                                  incremented
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Add one reference to an ACPI object
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_add_reference (
+	union acpi_operand_object       *object)
+{
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_add_reference", object);
+
+
+	/* Ensure that we have a valid object */
+
+	if (!acpi_ut_valid_internal_object (object)) {
+		return_VOID;
+	}
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
+		"Obj %p Current Refs=%X [To Be Incremented]\n",
+		object, object->common.reference_count));
+
+	/* Increment the reference count */
+
+	(void) acpi_ut_update_object_reference (object, REF_INCREMENT);
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_remove_reference
+ *
+ * PARAMETERS:  *Object        - Object whose ref count will be decremented
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Decrement the reference count of an ACPI internal object
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_remove_reference (
+	union acpi_operand_object       *object)
+{
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_remove_reference", object);
+
+
+	/*
+	 * Allow a NULL pointer to be passed in, just ignore it.  This saves
+	 * each caller from having to check.  Also, ignore NS nodes.
+	 *
+	 */
+	if (!object ||
+		(ACPI_GET_DESCRIPTOR_TYPE (object) == ACPI_DESC_TYPE_NAMED)) {
+		return_VOID;
+	}
+
+	/* Ensure that we have a valid object */
+
+	if (!acpi_ut_valid_internal_object (object)) {
+		return_VOID;
+	}
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
+		"Obj %p Current Refs=%X [To Be Decremented]\n",
+		object, object->common.reference_count));
+
+	/*
+	 * Decrement the reference count, and only actually delete the object
+	 * if the reference count becomes 0.  (Must also decrement the ref count
+	 * of all subobjects!)
+	 */
+	(void) acpi_ut_update_object_reference (object, REF_DECREMENT);
+	return_VOID;
+}
+
+

drivers/acpi/utilities/uteval.c

@@ -0,0 +1,696 @@
+/******************************************************************************
+ *
+ * Module Name: uteval - Object evaluation
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acinterp.h>
+
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("uteval")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_osi_implementation
+ *
+ * PARAMETERS:  walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Implementation of _OSI predefined control method
+ *              Supported = _OSI (String)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_osi_implementation (
+	struct acpi_walk_state          *walk_state)
+{
+	union acpi_operand_object       *string_desc;
+	union acpi_operand_object       *return_desc;
+	acpi_native_uint                i;
+
+
+	ACPI_FUNCTION_TRACE ("ut_osi_implementation");
+
+
+	/* Validate the string input argument */
+
+	string_desc = walk_state->arguments[0].object;
+	if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) {
+		return_ACPI_STATUS (AE_TYPE);
+	}
+
+	/* Create a return object (Default value = 0) */
+
+	return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+	if (!return_desc) {
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	/* Compare input string to table of supported strings */
+
+	for (i = 0; i < ACPI_NUM_OSI_STRINGS; i++) {
+		if (!ACPI_STRCMP (string_desc->string.pointer,
+				   (char *) acpi_gbl_valid_osi_strings[i])) {
+			/* This string is supported */
+
+			return_desc->integer.value = 0xFFFFFFFF;
+			break;
+		}
+	}
+
+	walk_state->return_desc = return_desc;
+	return_ACPI_STATUS (AE_CTRL_TERMINATE);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_evaluate_object
+ *
+ * PARAMETERS:  prefix_node         - Starting node
+ *              Path                - Path to object from starting node
+ *              expected_return_types - Bitmap of allowed return types
+ *              return_desc         - Where a return value is stored
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Evaluates a namespace object and verifies the type of the
+ *              return object.  Common code that simplifies accessing objects
+ *              that have required return objects of fixed types.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_evaluate_object (
+	struct acpi_namespace_node      *prefix_node,
+	char                            *path,
+	u32                             expected_return_btypes,
+	union acpi_operand_object       **return_desc)
+{
+	struct acpi_parameter_info      info;
+	acpi_status                     status;
+	u32                             return_btype;
+
+
+	ACPI_FUNCTION_TRACE ("ut_evaluate_object");
+
+
+	info.node = prefix_node;
+	info.parameters = NULL;
+	info.parameter_type = ACPI_PARAM_ARGS;
+
+	/* Evaluate the object/method */
+
+	status = acpi_ns_evaluate_relative (path, &info);
+	if (ACPI_FAILURE (status)) {
+		if (status == AE_NOT_FOUND) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s.%s] was not found\n",
+				acpi_ut_get_node_name (prefix_node), path));
+		}
+		else {
+			ACPI_REPORT_METHOD_ERROR ("Method execution failed",
+				prefix_node, path, status);
+		}
+
+		return_ACPI_STATUS (status);
+	}
+
+	/* Did we get a return object? */
+
+	if (!info.return_object) {
+		if (expected_return_btypes) {
+			ACPI_REPORT_METHOD_ERROR ("No object was returned from",
+				prefix_node, path, AE_NOT_EXIST);
+
+			return_ACPI_STATUS (AE_NOT_EXIST);
+		}
+
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	/* Map the return object type to the bitmapped type */
+
+	switch (ACPI_GET_OBJECT_TYPE (info.return_object)) {
+	case ACPI_TYPE_INTEGER:
+		return_btype = ACPI_BTYPE_INTEGER;
+		break;
+
+	case ACPI_TYPE_BUFFER:
+		return_btype = ACPI_BTYPE_BUFFER;
+		break;
+
+	case ACPI_TYPE_STRING:
+		return_btype = ACPI_BTYPE_STRING;
+		break;
+
+	case ACPI_TYPE_PACKAGE:
+		return_btype = ACPI_BTYPE_PACKAGE;
+		break;
+
+	default:
+		return_btype = 0;
+		break;
+	}
+
+	if ((acpi_gbl_enable_interpreter_slack) &&
+		(!expected_return_btypes)) {
+		/*
+		 * We received a return object, but one was not expected.  This can
+		 * happen frequently if the "implicit return" feature is enabled.
+		 * Just delete the return object and return AE_OK.
+		 */
+		acpi_ut_remove_reference (info.return_object);
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	/* Is the return object one of the expected types? */
+
+	if (!(expected_return_btypes & return_btype)) {
+		ACPI_REPORT_METHOD_ERROR ("Return object type is incorrect",
+			prefix_node, path, AE_TYPE);
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Type returned from %s was incorrect: %s, expected Btypes: %X\n",
+			path, acpi_ut_get_object_type_name (info.return_object),
+			expected_return_btypes));
+
+		/* On error exit, we must delete the return object */
+
+		acpi_ut_remove_reference (info.return_object);
+		return_ACPI_STATUS (AE_TYPE);
+	}
+
+	/* Object type is OK, return it */
+
+	*return_desc = info.return_object;
+	return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_evaluate_numeric_object
+ *
+ * PARAMETERS:  *object_name        - Object name to be evaluated
+ *              device_node         - Node for the device
+ *              *Address            - Where the value is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Evaluates a numeric namespace object for a selected device
+ *              and stores result in *Address.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_evaluate_numeric_object (
+	char                            *object_name,
+	struct acpi_namespace_node      *device_node,
+	acpi_integer                    *address)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_evaluate_numeric_object");
+
+
+	status = acpi_ut_evaluate_object (device_node, object_name,
+			 ACPI_BTYPE_INTEGER, &obj_desc);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	/* Get the returned Integer */
+
+	*address = obj_desc->integer.value;
+
+	/* On exit, we must delete the return object */
+
+	acpi_ut_remove_reference (obj_desc);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_id_string
+ *
+ * PARAMETERS:  Destination         - Where to copy the string
+ *              Source              - Source string
+ *              max_length          - Length of the destination buffer
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods.
+ *              Performs removal of a leading asterisk if present -- workaround
+ *              for a known issue on a bunch of machines.
+ *
+ ******************************************************************************/
+
+static void
+acpi_ut_copy_id_string (
+	char                            *destination,
+	char                            *source,
+	acpi_size                       max_length)
+{
+
+
+	/*
+	 * Workaround for ID strings that have a leading asterisk. This construct
+	 * is not allowed by the ACPI specification  (ID strings must be
+	 * alphanumeric), but enough existing machines have this embedded in their
+	 * ID strings that the following code is useful.
+	 */
+	if (*source == '*') {
+		source++;
+	}
+
+	/* Do the actual copy */
+
+	ACPI_STRNCPY (destination, source, max_length);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_HID
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              *Hid                - Where the HID is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes the _HID control method that returns the hardware
+ *              ID of the device.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_HID (
+	struct acpi_namespace_node      *device_node,
+	struct acpi_device_id           *hid)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_execute_HID");
+
+
+	status = acpi_ut_evaluate_object (device_node, METHOD_NAME__HID,
+			 ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &obj_desc);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) {
+		/* Convert the Numeric HID to string */
+
+		acpi_ex_eisa_id_to_string ((u32) obj_desc->integer.value, hid->value);
+	}
+	else {
+		/* Copy the String HID from the returned object */
+
+		acpi_ut_copy_id_string (hid->value, obj_desc->string.pointer,
+				sizeof (hid->value));
+	}
+
+	/* On exit, we must delete the return object */
+
+	acpi_ut_remove_reference (obj_desc);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_translate_one_cid
+ *
+ * PARAMETERS:  obj_desc            - _CID object, must be integer or string
+ *              one_cid             - Where the CID string is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Return a numeric or string _CID value as a string.
+ *              (Compatible ID)
+ *
+ *              NOTE:  Assumes a maximum _CID string length of
+ *                     ACPI_MAX_CID_LENGTH.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_translate_one_cid (
+	union acpi_operand_object       *obj_desc,
+	struct acpi_compatible_id       *one_cid)
+{
+
+
+	switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+	case ACPI_TYPE_INTEGER:
+
+		/* Convert the Numeric CID to string */
+
+		acpi_ex_eisa_id_to_string ((u32) obj_desc->integer.value, one_cid->value);
+		return (AE_OK);
+
+	case ACPI_TYPE_STRING:
+
+		if (obj_desc->string.length > ACPI_MAX_CID_LENGTH) {
+			return (AE_AML_STRING_LIMIT);
+		}
+
+		/* Copy the String CID from the returned object */
+
+		acpi_ut_copy_id_string (one_cid->value, obj_desc->string.pointer,
+				ACPI_MAX_CID_LENGTH);
+		return (AE_OK);
+
+	default:
+
+		return (AE_TYPE);
+	}
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_CID
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              *Cid                - Where the CID is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes the _CID control method that returns one or more
+ *              compatible hardware IDs for the device.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_CID (
+	struct acpi_namespace_node      *device_node,
+	struct acpi_compatible_id_list **return_cid_list)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status;
+	u32                             count;
+	u32                             size;
+	struct acpi_compatible_id_list *cid_list;
+	acpi_native_uint                i;
+
+
+	ACPI_FUNCTION_TRACE ("ut_execute_CID");
+
+
+	/* Evaluate the _CID method for this device */
+
+	status = acpi_ut_evaluate_object (device_node, METHOD_NAME__CID,
+			 ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_PACKAGE,
+			 &obj_desc);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	/* Get the number of _CIDs returned */
+
+	count = 1;
+	if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_PACKAGE) {
+		count = obj_desc->package.count;
+	}
+
+	/* Allocate a worst-case buffer for the _CIDs */
+
+	size = (((count - 1) * sizeof (struct acpi_compatible_id)) +
+			   sizeof (struct acpi_compatible_id_list));
+
+	cid_list = ACPI_MEM_CALLOCATE ((acpi_size) size);
+	if (!cid_list) {
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	/* Init CID list */
+
+	cid_list->count = count;
+	cid_list->size = size;
+
+	/*
+	 *  A _CID can return either a single compatible ID or a package of compatible
+	 *  IDs.  Each compatible ID can be one of the following:
+	 *  -- Number (32 bit compressed EISA ID) or
+	 *  -- String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss").
+	 */
+
+	/* The _CID object can be either a single CID or a package (list) of CIDs */
+
+	if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_PACKAGE) {
+		/* Translate each package element */
+
+		for (i = 0; i < count; i++) {
+			status = acpi_ut_translate_one_cid (obj_desc->package.elements[i],
+					  &cid_list->id[i]);
+			if (ACPI_FAILURE (status)) {
+				break;
+			}
+		}
+	}
+	else {
+		/* Only one CID, translate to a string */
+
+		status = acpi_ut_translate_one_cid (obj_desc, cid_list->id);
+	}
+
+	/* Cleanup on error */
+
+	if (ACPI_FAILURE (status)) {
+		ACPI_MEM_FREE (cid_list);
+	}
+	else {
+		*return_cid_list = cid_list;
+	}
+
+	/* On exit, we must delete the _CID return object */
+
+	acpi_ut_remove_reference (obj_desc);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_UID
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              *Uid                - Where the UID is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes the _UID control method that returns the hardware
+ *              ID of the device.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_UID (
+	struct acpi_namespace_node      *device_node,
+	struct acpi_device_id           *uid)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_execute_UID");
+
+
+	status = acpi_ut_evaluate_object (device_node, METHOD_NAME__UID,
+			 ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &obj_desc);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) {
+		/* Convert the Numeric UID to string */
+
+		acpi_ex_unsigned_integer_to_string (obj_desc->integer.value, uid->value);
+	}
+	else {
+		/* Copy the String UID from the returned object */
+
+		acpi_ut_copy_id_string (uid->value, obj_desc->string.pointer,
+				sizeof (uid->value));
+	}
+
+	/* On exit, we must delete the return object */
+
+	acpi_ut_remove_reference (obj_desc);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_STA
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              *Flags              - Where the status flags are returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes _STA for selected device and stores results in
+ *              *Flags.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_STA (
+	struct acpi_namespace_node      *device_node,
+	u32                             *flags)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_execute_STA");
+
+
+	status = acpi_ut_evaluate_object (device_node, METHOD_NAME__STA,
+			 ACPI_BTYPE_INTEGER, &obj_desc);
+	if (ACPI_FAILURE (status)) {
+		if (AE_NOT_FOUND == status) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+				"_STA on %4.4s was not found, assuming device is present\n",
+				acpi_ut_get_node_name (device_node)));
+
+			*flags = 0x0F;
+			status = AE_OK;
+		}
+
+		return_ACPI_STATUS (status);
+	}
+
+	/* Extract the status flags */
+
+	*flags = (u32) obj_desc->integer.value;
+
+	/* On exit, we must delete the return object */
+
+	acpi_ut_remove_reference (obj_desc);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_execute_Sxds
+ *
+ * PARAMETERS:  device_node         - Node for the device
+ *              *Flags              - Where the status flags are returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Executes _STA for selected device and stores results in
+ *              *Flags.
+ *
+ *              NOTE: Internal function, no parameter validation
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_execute_sxds (
+	struct acpi_namespace_node      *device_node,
+	u8                              *highest)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status;
+	u32                             i;
+
+
+	ACPI_FUNCTION_TRACE ("ut_execute_Sxds");
+
+
+	for (i = 0; i < 4; i++) {
+		highest[i] = 0xFF;
+		status = acpi_ut_evaluate_object (device_node,
+				 (char *) acpi_gbl_highest_dstate_names[i],
+				 ACPI_BTYPE_INTEGER, &obj_desc);
+		if (ACPI_FAILURE (status)) {
+			if (status != AE_NOT_FOUND) {
+				ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+					"%s on Device %4.4s, %s\n",
+					(char *) acpi_gbl_highest_dstate_names[i],
+					acpi_ut_get_node_name (device_node),
+					acpi_format_exception (status)));
+
+				return_ACPI_STATUS (status);
+			}
+		}
+		else {
+			/* Extract the Dstate value */
+
+			highest[i] = (u8) obj_desc->integer.value;
+
+			/* Delete the return object */
+
+			acpi_ut_remove_reference (obj_desc);
+		}
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}

drivers/acpi/utilities/utglobal.c

@@ -0,0 +1,935 @@
+/******************************************************************************
+ *
+ * Module Name: utglobal - Global variables for the ACPI subsystem
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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 DEFINE_ACPI_GLOBALS
+
+#include <linux/module.h>
+
+#include <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utglobal")
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_format_exception
+ *
+ * PARAMETERS:  Status       - The acpi_status code to be formatted
+ *
+ * RETURN:      A string containing the exception  text
+ *
+ * DESCRIPTION: This function translates an ACPI exception into an ASCII string.
+ *
+ ******************************************************************************/
+
+const char *
+acpi_format_exception (
+	acpi_status                     status)
+{
+	const char                      *exception = "UNKNOWN_STATUS_CODE";
+	acpi_status                     sub_status;
+
+
+	ACPI_FUNCTION_NAME ("format_exception");
+
+
+	sub_status = (status & ~AE_CODE_MASK);
+
+	switch (status & AE_CODE_MASK) {
+	case AE_CODE_ENVIRONMENTAL:
+
+		if (sub_status <= AE_CODE_ENV_MAX) {
+			exception = acpi_gbl_exception_names_env [sub_status];
+			break;
+		}
+		goto unknown;
+
+	case AE_CODE_PROGRAMMER:
+
+		if (sub_status <= AE_CODE_PGM_MAX) {
+			exception = acpi_gbl_exception_names_pgm [sub_status -1];
+			break;
+		}
+		goto unknown;
+
+	case AE_CODE_ACPI_TABLES:
+
+		if (sub_status <= AE_CODE_TBL_MAX) {
+			exception = acpi_gbl_exception_names_tbl [sub_status -1];
+			break;
+		}
+		goto unknown;
+
+	case AE_CODE_AML:
+
+		if (sub_status <= AE_CODE_AML_MAX) {
+			exception = acpi_gbl_exception_names_aml [sub_status -1];
+			break;
+		}
+		goto unknown;
+
+	case AE_CODE_CONTROL:
+
+		if (sub_status <= AE_CODE_CTRL_MAX) {
+			exception = acpi_gbl_exception_names_ctrl [sub_status -1];
+			break;
+		}
+		goto unknown;
+
+	default:
+		goto unknown;
+	}
+
+
+	return ((const char *) exception);
+
+unknown:
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown exception code: 0x%8.8X\n", status));
+	return ((const char *) exception);
+}
+
+
+/******************************************************************************
+ *
+ * Static global variable initialization.
+ *
+ ******************************************************************************/
+
+/*
+ * We want the debug switches statically initialized so they
+ * are already set when the debugger is entered.
+ */
+
+/* Debug switch - level and trace mask */
+u32                                 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
+EXPORT_SYMBOL(acpi_dbg_level);
+
+/* Debug switch - layer (component) mask */
+
+u32                                 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
+EXPORT_SYMBOL(acpi_dbg_layer);
+u32                                 acpi_gbl_nesting_level = 0;
+
+
+/* Debugger globals */
+
+u8                                  acpi_gbl_db_terminate_threads = FALSE;
+u8                                  acpi_gbl_abort_method = FALSE;
+u8                                  acpi_gbl_method_executing = FALSE;
+
+/* System flags */
+
+u32                                 acpi_gbl_startup_flags = 0;
+
+/* System starts uninitialized */
+
+u8                                  acpi_gbl_shutdown = TRUE;
+
+const u8                            acpi_gbl_decode_to8bit [8] = {1,2,4,8,16,32,64,128};
+
+const char                          *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] =
+{
+	"\\_S0_",
+	"\\_S1_",
+	"\\_S2_",
+	"\\_S3_",
+	"\\_S4_",
+	"\\_S5_"
+};
+
+const char                          *acpi_gbl_highest_dstate_names[4] =
+{
+	"_S1D",
+	"_S2D",
+	"_S3D",
+	"_S4D"
+};
+
+/*
+ * Strings supported by the _OSI predefined (internal) method.
+ * When adding strings, be sure to update ACPI_NUM_OSI_STRINGS.
+ */
+const char                          *acpi_gbl_valid_osi_strings[ACPI_NUM_OSI_STRINGS] =
+{
+	/* Operating System Vendor Strings */
+
+	"Linux",
+	"Windows 2000",
+	"Windows 2001",
+	"Windows 2001.1",
+	"Windows 2001 SP0",
+	"Windows 2001 SP1",
+	"Windows 2001 SP2",
+	"Windows 2001 SP3",
+	"Windows 2001 SP4",
+
+	/* Feature Group Strings */
+
+	"Extended Address Space Descriptor"
+};
+
+
+/******************************************************************************
+ *
+ * Namespace globals
+ *
+ ******************************************************************************/
+
+
+/*
+ * Predefined ACPI Names (Built-in to the Interpreter)
+ *
+ * NOTES:
+ * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
+ *    during the initialization sequence.
+ * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
+ *    perform a Notify() operation on it.
+ */
+const struct acpi_predefined_names      acpi_gbl_pre_defined_names[] =
+{ {"_GPE",    ACPI_TYPE_LOCAL_SCOPE,      NULL},
+	{"_PR_",    ACPI_TYPE_LOCAL_SCOPE,      NULL},
+	{"_SB_",    ACPI_TYPE_DEVICE,           NULL},
+	{"_SI_",    ACPI_TYPE_LOCAL_SCOPE,      NULL},
+	{"_TZ_",    ACPI_TYPE_THERMAL,          NULL},
+	{"_REV",    ACPI_TYPE_INTEGER,          (char *) ACPI_CA_SUPPORT_LEVEL},
+	{"_OS_",    ACPI_TYPE_STRING,           ACPI_OS_NAME},
+	{"_GL_",    ACPI_TYPE_MUTEX,            (char *) 1},
+
+#if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
+	{"_OSI",    ACPI_TYPE_METHOD,           (char *) 1},
+#endif
+	{NULL,      ACPI_TYPE_ANY,              NULL}              /* Table terminator */
+};
+
+
+/*
+ * Properties of the ACPI Object Types, both internal and external.
+ * The table is indexed by values of acpi_object_type
+ */
+const u8                                acpi_gbl_ns_properties[] =
+{
+	ACPI_NS_NORMAL,                     /* 00 Any              */
+	ACPI_NS_NORMAL,                     /* 01 Number           */
+	ACPI_NS_NORMAL,                     /* 02 String           */
+	ACPI_NS_NORMAL,                     /* 03 Buffer           */
+	ACPI_NS_NORMAL,                     /* 04 Package          */
+	ACPI_NS_NORMAL,                     /* 05 field_unit       */
+	ACPI_NS_NEWSCOPE,                   /* 06 Device           */
+	ACPI_NS_NORMAL,                     /* 07 Event            */
+	ACPI_NS_NEWSCOPE,                   /* 08 Method           */
+	ACPI_NS_NORMAL,                     /* 09 Mutex            */
+	ACPI_NS_NORMAL,                     /* 10 Region           */
+	ACPI_NS_NEWSCOPE,                   /* 11 Power            */
+	ACPI_NS_NEWSCOPE,                   /* 12 Processor        */
+	ACPI_NS_NEWSCOPE,                   /* 13 Thermal          */
+	ACPI_NS_NORMAL,                     /* 14 buffer_field     */
+	ACPI_NS_NORMAL,                     /* 15 ddb_handle       */
+	ACPI_NS_NORMAL,                     /* 16 Debug Object     */
+	ACPI_NS_NORMAL,                     /* 17 def_field        */
+	ACPI_NS_NORMAL,                     /* 18 bank_field       */
+	ACPI_NS_NORMAL,                     /* 19 index_field      */
+	ACPI_NS_NORMAL,                     /* 20 Reference        */
+	ACPI_NS_NORMAL,                     /* 21 Alias            */
+	ACPI_NS_NORMAL,                     /* 22 method_alias     */
+	ACPI_NS_NORMAL,                     /* 23 Notify           */
+	ACPI_NS_NORMAL,                     /* 24 Address Handler  */
+	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,   /* 25 Resource Desc    */
+	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,   /* 26 Resource Field   */
+	ACPI_NS_NEWSCOPE,                   /* 27 Scope            */
+	ACPI_NS_NORMAL,                     /* 28 Extra            */
+	ACPI_NS_NORMAL,                     /* 29 Data             */
+	ACPI_NS_NORMAL                      /* 30 Invalid          */
+};
+
+
+/* Hex to ASCII conversion table */
+
+static const char                   acpi_gbl_hex_to_ascii[] =
+			  {'0','1','2','3','4','5','6','7',
+					 '8','9','A','B','C','D','E','F'};
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_hex_to_ascii_char
+ *
+ * PARAMETERS:  Integer             - Contains the hex digit
+ *              Position            - bit position of the digit within the
+ *                                    integer
+ *
+ * RETURN:      Ascii character
+ *
+ * DESCRIPTION: Convert a hex digit to an ascii character
+ *
+ ****************************************************************************/
+
+char
+acpi_ut_hex_to_ascii_char (
+	acpi_integer                    integer,
+	u32                             position)
+{
+
+	return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
+}
+
+
+/******************************************************************************
+ *
+ * Table name globals
+ *
+ * NOTE: This table includes ONLY the ACPI tables that the subsystem consumes.
+ * it is NOT an exhaustive list of all possible ACPI tables.  All ACPI tables
+ * that are not used by the subsystem are simply ignored.
+ *
+ * Do NOT add any table to this list that is not consumed directly by this
+ * subsystem.
+ *
+ ******************************************************************************/
+
+struct acpi_table_list              acpi_gbl_table_lists[NUM_ACPI_TABLE_TYPES];
+
+struct acpi_table_support           acpi_gbl_table_data[NUM_ACPI_TABLE_TYPES] =
+{
+	/***********    Name,   Signature, Global typed pointer     Signature size,      Type                  How many allowed?,    Contains valid AML? */
+
+	/* RSDP 0 */ {RSDP_NAME, RSDP_SIG, NULL,                    sizeof (RSDP_SIG)-1, ACPI_TABLE_ROOT     | ACPI_TABLE_SINGLE},
+	/* DSDT 1 */ {DSDT_SIG,  DSDT_SIG, (void *) &acpi_gbl_DSDT, sizeof (DSDT_SIG)-1, ACPI_TABLE_SECONDARY| ACPI_TABLE_SINGLE   | ACPI_TABLE_EXECUTABLE},
+	/* FADT 2 */ {FADT_SIG,  FADT_SIG, (void *) &acpi_gbl_FADT, sizeof (FADT_SIG)-1, ACPI_TABLE_PRIMARY  | ACPI_TABLE_SINGLE},
+	/* FACS 3 */ {FACS_SIG,  FACS_SIG, (void *) &acpi_gbl_FACS, sizeof (FACS_SIG)-1, ACPI_TABLE_SECONDARY| ACPI_TABLE_SINGLE},
+	/* PSDT 4 */ {PSDT_SIG,  PSDT_SIG, NULL,                    sizeof (PSDT_SIG)-1, ACPI_TABLE_PRIMARY  | ACPI_TABLE_MULTIPLE | ACPI_TABLE_EXECUTABLE},
+	/* SSDT 5 */ {SSDT_SIG,  SSDT_SIG, NULL,                    sizeof (SSDT_SIG)-1, ACPI_TABLE_PRIMARY  | ACPI_TABLE_MULTIPLE | ACPI_TABLE_EXECUTABLE},
+	/* XSDT 6 */ {XSDT_SIG,  XSDT_SIG, NULL,                    sizeof (RSDT_SIG)-1, ACPI_TABLE_ROOT     | ACPI_TABLE_SINGLE},
+};
+
+
+/******************************************************************************
+ *
+ * Event and Hardware globals
+ *
+ ******************************************************************************/
+
+struct acpi_bit_register_info       acpi_gbl_bit_register_info[ACPI_NUM_BITREG] =
+{
+	/* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
+
+	/* ACPI_BITREG_TIMER_STATUS         */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_TIMER_STATUS,          ACPI_BITMASK_TIMER_STATUS},
+	/* ACPI_BITREG_BUS_MASTER_STATUS    */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_BUS_MASTER_STATUS,     ACPI_BITMASK_BUS_MASTER_STATUS},
+	/* ACPI_BITREG_GLOBAL_LOCK_STATUS   */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,    ACPI_BITMASK_GLOBAL_LOCK_STATUS},
+	/* ACPI_BITREG_POWER_BUTTON_STATUS  */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_POWER_BUTTON_STATUS,   ACPI_BITMASK_POWER_BUTTON_STATUS},
+	/* ACPI_BITREG_SLEEP_BUTTON_STATUS  */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,   ACPI_BITMASK_SLEEP_BUTTON_STATUS},
+	/* ACPI_BITREG_RT_CLOCK_STATUS      */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_RT_CLOCK_STATUS,       ACPI_BITMASK_RT_CLOCK_STATUS},
+	/* ACPI_BITREG_WAKE_STATUS          */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_WAKE_STATUS,           ACPI_BITMASK_WAKE_STATUS},
+	/* ACPI_BITREG_PCIEXP_WAKE_STATUS   */   {ACPI_REGISTER_PM1_STATUS,   ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,    ACPI_BITMASK_PCIEXP_WAKE_STATUS},
+
+	/* ACPI_BITREG_TIMER_ENABLE         */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_TIMER_ENABLE,          ACPI_BITMASK_TIMER_ENABLE},
+	/* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,    ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
+	/* ACPI_BITREG_POWER_BUTTON_ENABLE  */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_POWER_BUTTON_ENABLE,   ACPI_BITMASK_POWER_BUTTON_ENABLE},
+	/* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,   ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
+	/* ACPI_BITREG_RT_CLOCK_ENABLE      */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_RT_CLOCK_ENABLE,       ACPI_BITMASK_RT_CLOCK_ENABLE},
+	/* ACPI_BITREG_WAKE_ENABLE          */   {ACPI_REGISTER_PM1_ENABLE,   0,                                      0},
+	/* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */   {ACPI_REGISTER_PM1_ENABLE,   ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,   ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
+
+	/* ACPI_BITREG_SCI_ENABLE           */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SCI_ENABLE,            ACPI_BITMASK_SCI_ENABLE},
+	/* ACPI_BITREG_BUS_MASTER_RLD       */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_BUS_MASTER_RLD,        ACPI_BITMASK_BUS_MASTER_RLD},
+	/* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,   ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
+	/* ACPI_BITREG_SLEEP_TYPE_A         */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SLEEP_TYPE_X,          ACPI_BITMASK_SLEEP_TYPE_X},
+	/* ACPI_BITREG_SLEEP_TYPE_B         */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SLEEP_TYPE_X,          ACPI_BITMASK_SLEEP_TYPE_X},
+	/* ACPI_BITREG_SLEEP_ENABLE         */   {ACPI_REGISTER_PM1_CONTROL,  ACPI_BITPOSITION_SLEEP_ENABLE,          ACPI_BITMASK_SLEEP_ENABLE},
+
+	/* ACPI_BITREG_ARB_DIS              */   {ACPI_REGISTER_PM2_CONTROL,  ACPI_BITPOSITION_ARB_DISABLE,           ACPI_BITMASK_ARB_DISABLE}
+};
+
+
+struct acpi_fixed_event_info        acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] =
+{
+	/* ACPI_EVENT_PMTIMER       */  {ACPI_BITREG_TIMER_STATUS,          ACPI_BITREG_TIMER_ENABLE,        ACPI_BITMASK_TIMER_STATUS,          ACPI_BITMASK_TIMER_ENABLE},
+	/* ACPI_EVENT_GLOBAL        */  {ACPI_BITREG_GLOBAL_LOCK_STATUS,    ACPI_BITREG_GLOBAL_LOCK_ENABLE,  ACPI_BITMASK_GLOBAL_LOCK_STATUS,    ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
+	/* ACPI_EVENT_POWER_BUTTON  */  {ACPI_BITREG_POWER_BUTTON_STATUS,   ACPI_BITREG_POWER_BUTTON_ENABLE, ACPI_BITMASK_POWER_BUTTON_STATUS,   ACPI_BITMASK_POWER_BUTTON_ENABLE},
+	/* ACPI_EVENT_SLEEP_BUTTON  */  {ACPI_BITREG_SLEEP_BUTTON_STATUS,   ACPI_BITREG_SLEEP_BUTTON_ENABLE, ACPI_BITMASK_SLEEP_BUTTON_STATUS,   ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
+	/* ACPI_EVENT_RTC           */  {ACPI_BITREG_RT_CLOCK_STATUS,       ACPI_BITREG_RT_CLOCK_ENABLE,     ACPI_BITMASK_RT_CLOCK_STATUS,       ACPI_BITMASK_RT_CLOCK_ENABLE},
+};
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_region_name
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Translate a Space ID into a name string (Debug only)
+ *
+ ****************************************************************************/
+
+/* Region type decoding */
+
+const char                *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] =
+{
+/*! [Begin] no source code translation (keep these ASL Keywords as-is) */
+	"SystemMemory",
+	"SystemIO",
+	"PCI_Config",
+	"EmbeddedControl",
+	"SMBus",
+	"CMOS",
+	"PCIBARTarget",
+	"DataTable"
+/*! [End] no source code translation !*/
+};
+
+
+char *
+acpi_ut_get_region_name (
+	u8                              space_id)
+{
+
+	if (space_id >= ACPI_USER_REGION_BEGIN)
+	{
+		return ("user_defined_region");
+	}
+
+	else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS)
+	{
+		return ("invalid_space_id");
+	}
+
+	return ((char *) acpi_gbl_region_types[space_id]);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_event_name
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Translate a Event ID into a name string (Debug only)
+ *
+ ****************************************************************************/
+
+/* Event type decoding */
+
+static const char                *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] =
+{
+	"PM_Timer",
+	"global_lock",
+	"power_button",
+	"sleep_button",
+	"real_time_clock",
+};
+
+
+char *
+acpi_ut_get_event_name (
+	u32                             event_id)
+{
+
+	if (event_id > ACPI_EVENT_MAX)
+	{
+		return ("invalid_event_iD");
+	}
+
+	return ((char *) acpi_gbl_event_types[event_id]);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_type_name
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Translate a Type ID into a name string (Debug only)
+ *
+ ****************************************************************************/
+
+/*
+ * Elements of acpi_gbl_ns_type_names below must match
+ * one-to-one with values of acpi_object_type
+ *
+ * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching; when
+ * stored in a table it really means that we have thus far seen no evidence to
+ * indicate what type is actually going to be stored for this entry.
+ */
+static const char                   acpi_gbl_bad_type[] = "UNDEFINED";
+#define TYPE_NAME_LENGTH    12                           /* Maximum length of each string */
+
+static const char                   *acpi_gbl_ns_type_names[] = /* printable names of ACPI types */
+{
+	/* 00 */ "Untyped",
+	/* 01 */ "Integer",
+	/* 02 */ "String",
+	/* 03 */ "Buffer",
+	/* 04 */ "Package",
+	/* 05 */ "field_unit",
+	/* 06 */ "Device",
+	/* 07 */ "Event",
+	/* 08 */ "Method",
+	/* 09 */ "Mutex",
+	/* 10 */ "Region",
+	/* 11 */ "Power",
+	/* 12 */ "Processor",
+	/* 13 */ "Thermal",
+	/* 14 */ "buffer_field",
+	/* 15 */ "ddb_handle",
+	/* 16 */ "debug_object",
+	/* 17 */ "region_field",
+	/* 18 */ "bank_field",
+	/* 19 */ "index_field",
+	/* 20 */ "Reference",
+	/* 21 */ "Alias",
+	/* 22 */ "method_alias",
+	/* 23 */ "Notify",
+	/* 24 */ "addr_handler",
+	/* 25 */ "resource_desc",
+	/* 26 */ "resource_fld",
+	/* 27 */ "Scope",
+	/* 28 */ "Extra",
+	/* 29 */ "Data",
+	/* 30 */ "Invalid"
+};
+
+
+char *
+acpi_ut_get_type_name (
+	acpi_object_type                type)
+{
+
+	if (type > ACPI_TYPE_INVALID)
+	{
+		return ((char *) acpi_gbl_bad_type);
+	}
+
+	return ((char *) acpi_gbl_ns_type_names[type]);
+}
+
+
+char *
+acpi_ut_get_object_type_name (
+	union acpi_operand_object       *obj_desc)
+{
+
+	if (!obj_desc)
+	{
+		return ("[NULL Object Descriptor]");
+	}
+
+	return (acpi_ut_get_type_name (ACPI_GET_OBJECT_TYPE (obj_desc)));
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_node_name
+ *
+ * PARAMETERS:  Object               - A namespace node
+ *
+ * RETURN:      Pointer to a string
+ *
+ * DESCRIPTION: Validate the node and return the node's ACPI name.
+ *
+ ****************************************************************************/
+
+char *
+acpi_ut_get_node_name (
+	void                            *object)
+{
+	struct acpi_namespace_node      *node = (struct acpi_namespace_node *) object;
+
+
+	/* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
+
+	if (!object)
+	{
+		return ("NULL");
+	}
+
+	/* Check for Root node */
+
+	if ((object == ACPI_ROOT_OBJECT) ||
+		(object == acpi_gbl_root_node))
+	{
+		return ("\"\\\" ");
+	}
+
+	/* Descriptor must be a namespace node */
+
+	if (node->descriptor != ACPI_DESC_TYPE_NAMED)
+	{
+		return ("####");
+	}
+
+	/* Name must be a valid ACPI name */
+
+	if (!acpi_ut_valid_acpi_name (* (u32 *) node->name.ascii))
+	{
+		return ("????");
+	}
+
+	/* Return the name */
+
+	return (node->name.ascii);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_descriptor_name
+ *
+ * PARAMETERS:  Object               - An ACPI object
+ *
+ * RETURN:      Pointer to a string
+ *
+ * DESCRIPTION: Validate object and return the descriptor type
+ *
+ ****************************************************************************/
+
+static const char                   *acpi_gbl_desc_type_names[] = /* printable names of descriptor types */
+{
+	/* 00 */ "Invalid",
+	/* 01 */ "Cached",
+	/* 02 */ "State-Generic",
+	/* 03 */ "State-Update",
+	/* 04 */ "State-Package",
+	/* 05 */ "State-Control",
+	/* 06 */ "State-root_parse_scope",
+	/* 07 */ "State-parse_scope",
+	/* 08 */ "State-walk_scope",
+	/* 09 */ "State-Result",
+	/* 10 */ "State-Notify",
+	/* 11 */ "State-Thread",
+	/* 12 */ "Walk",
+	/* 13 */ "Parser",
+	/* 14 */ "Operand",
+	/* 15 */ "Node"
+};
+
+
+char *
+acpi_ut_get_descriptor_name (
+	void                            *object)
+{
+
+	if (!object)
+	{
+		return ("NULL OBJECT");
+	}
+
+	if (ACPI_GET_DESCRIPTOR_TYPE (object) > ACPI_DESC_TYPE_MAX)
+	{
+		return ((char *) acpi_gbl_bad_type);
+	}
+
+	return ((char *) acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE (object)]);
+
+}
+
+
+#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
+/*
+ * Strings and procedures used for debug only
+ */
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_mutex_name
+ *
+ * PARAMETERS:  None.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
+ *
+ ****************************************************************************/
+
+char *
+acpi_ut_get_mutex_name (
+	u32                             mutex_id)
+{
+
+	if (mutex_id > MAX_MUTEX)
+	{
+		return ("Invalid Mutex ID");
+	}
+
+	return (acpi_gbl_mutex_names[mutex_id]);
+}
+
+#endif
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_valid_object_type
+ *
+ * PARAMETERS:  Type            - Object type to be validated
+ *
+ * RETURN:      TRUE if valid object type
+ *
+ * DESCRIPTION: Validate an object type
+ *
+ ****************************************************************************/
+
+u8
+acpi_ut_valid_object_type (
+	acpi_object_type                type)
+{
+
+	if (type > ACPI_TYPE_LOCAL_MAX)
+	{
+		/* Note: Assumes all TYPEs are contiguous (external/local) */
+
+		return (FALSE);
+	}
+
+	return (TRUE);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_allocate_owner_id
+ *
+ * PARAMETERS:  id_type         - Type of ID (method or table)
+ *
+ * DESCRIPTION: Allocate a table or method owner id
+ *
+ ***************************************************************************/
+
+acpi_owner_id
+acpi_ut_allocate_owner_id (
+	u32                             id_type)
+{
+	acpi_owner_id                   owner_id = 0xFFFF;
+
+
+	ACPI_FUNCTION_TRACE ("ut_allocate_owner_id");
+
+
+	if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES)))
+	{
+		return (0);
+	}
+
+	switch (id_type)
+	{
+	case ACPI_OWNER_TYPE_TABLE:
+
+		owner_id = acpi_gbl_next_table_owner_id;
+		acpi_gbl_next_table_owner_id++;
+
+		/* Check for wraparound */
+
+		if (acpi_gbl_next_table_owner_id == ACPI_FIRST_METHOD_ID)
+		{
+			acpi_gbl_next_table_owner_id = ACPI_FIRST_TABLE_ID;
+			ACPI_REPORT_WARNING (("Table owner ID wraparound\n"));
+		}
+		break;
+
+
+	case ACPI_OWNER_TYPE_METHOD:
+
+		owner_id = acpi_gbl_next_method_owner_id;
+		acpi_gbl_next_method_owner_id++;
+
+		if (acpi_gbl_next_method_owner_id == ACPI_FIRST_TABLE_ID)
+		{
+			/* Check for wraparound */
+
+			acpi_gbl_next_method_owner_id = ACPI_FIRST_METHOD_ID;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	(void) acpi_ut_release_mutex (ACPI_MTX_CACHES);
+	return_VALUE (owner_id);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:    acpi_ut_init_globals
+ *
+ * PARAMETERS:  none
+ *
+ * DESCRIPTION: Init library globals.  All globals that require specific
+ *              initialization should be initialized here!
+ *
+ ***************************************************************************/
+
+void
+acpi_ut_init_globals (
+	void)
+{
+	u32                             i;
+
+
+	ACPI_FUNCTION_TRACE ("ut_init_globals");
+
+
+	/* Memory allocation and cache lists */
+
+	ACPI_MEMSET (acpi_gbl_memory_lists, 0, sizeof (struct acpi_memory_list) * ACPI_NUM_MEM_LISTS);
+
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].link_offset      = (u16) ACPI_PTR_DIFF (&(((union acpi_generic_state *) NULL)->common.next), NULL);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].link_offset     = (u16) ACPI_PTR_DIFF (&(((union acpi_parse_object *) NULL)->common.next), NULL);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].link_offset = (u16) ACPI_PTR_DIFF (&(((union acpi_parse_object *) NULL)->common.next), NULL);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].link_offset    = (u16) ACPI_PTR_DIFF (&(((union acpi_operand_object *) NULL)->cache.next), NULL);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].link_offset       = (u16) ACPI_PTR_DIFF (&(((struct acpi_walk_state *) NULL)->next), NULL);
+
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_NSNODE].object_size     = sizeof (struct acpi_namespace_node);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].object_size      = sizeof (union acpi_generic_state);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].object_size     = sizeof (struct acpi_parse_obj_common);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].object_size = sizeof (struct acpi_parse_obj_named);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].object_size    = sizeof (union acpi_operand_object);
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].object_size       = sizeof (struct acpi_walk_state);
+
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].max_cache_depth  = ACPI_MAX_STATE_CACHE_DEPTH;
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].max_cache_depth = ACPI_MAX_PARSE_CACHE_DEPTH;
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].max_cache_depth = ACPI_MAX_EXTPARSE_CACHE_DEPTH;
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].max_cache_depth = ACPI_MAX_OBJECT_CACHE_DEPTH;
+	acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].max_cache_depth   = ACPI_MAX_WALK_CACHE_DEPTH;
+
+	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].list_name    = "Global Memory Allocation");
+	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_NSNODE].list_name    = "Namespace Nodes");
+	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].list_name     = "State Object Cache");
+	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].list_name    = "Parse Node Cache");
+	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].list_name = "Extended Parse Node Cache");
+	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].list_name   = "Operand Object Cache");
+	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].list_name      = "Tree Walk Node Cache");
+
+	/* ACPI table structure */
+
+	for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++)
+	{
+		acpi_gbl_table_lists[i].next        = NULL;
+		acpi_gbl_table_lists[i].count       = 0;
+	}
+
+	/* Mutex locked flags */
+
+	for (i = 0; i < NUM_MUTEX; i++)
+	{
+		acpi_gbl_mutex_info[i].mutex        = NULL;
+		acpi_gbl_mutex_info[i].owner_id     = ACPI_MUTEX_NOT_ACQUIRED;
+		acpi_gbl_mutex_info[i].use_count    = 0;
+	}
+
+	/* GPE support */
+
+	acpi_gbl_gpe_xrupt_list_head        = NULL;
+	acpi_gbl_gpe_fadt_blocks[0]         = NULL;
+	acpi_gbl_gpe_fadt_blocks[1]         = NULL;
+
+	/* Global notify handlers */
+
+	acpi_gbl_system_notify.handler      = NULL;
+	acpi_gbl_device_notify.handler      = NULL;
+	acpi_gbl_exception_handler          = NULL;
+	acpi_gbl_init_handler               = NULL;
+
+	/* Global "typed" ACPI table pointers */
+
+	acpi_gbl_RSDP                       = NULL;
+	acpi_gbl_XSDT                       = NULL;
+	acpi_gbl_FACS                       = NULL;
+	acpi_gbl_FADT                       = NULL;
+	acpi_gbl_DSDT                       = NULL;
+
+	/* Global Lock support */
+
+	acpi_gbl_global_lock_acquired       = FALSE;
+	acpi_gbl_global_lock_thread_count   = 0;
+	acpi_gbl_global_lock_handle         = 0;
+
+	/* Miscellaneous variables */
+
+	acpi_gbl_table_flags                = ACPI_PHYSICAL_POINTER;
+	acpi_gbl_rsdp_original_location     = 0;
+	acpi_gbl_cm_single_step             = FALSE;
+	acpi_gbl_db_terminate_threads       = FALSE;
+	acpi_gbl_shutdown                   = FALSE;
+	acpi_gbl_ns_lookup_count            = 0;
+	acpi_gbl_ps_find_count              = 0;
+	acpi_gbl_acpi_hardware_present      = TRUE;
+	acpi_gbl_next_table_owner_id        = ACPI_FIRST_TABLE_ID;
+	acpi_gbl_next_method_owner_id       = ACPI_FIRST_METHOD_ID;
+	acpi_gbl_debugger_configuration     = DEBUGGER_THREADING;
+	acpi_gbl_db_output_flags            = ACPI_DB_CONSOLE_OUTPUT;
+
+	/* Hardware oriented */
+
+	acpi_gbl_events_initialized         = FALSE;
+	acpi_gbl_system_awake_and_running   = TRUE;
+
+	/* Namespace */
+
+	acpi_gbl_root_node                  = NULL;
+
+	acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
+	acpi_gbl_root_node_struct.descriptor = ACPI_DESC_TYPE_NAMED;
+	acpi_gbl_root_node_struct.type      = ACPI_TYPE_DEVICE;
+	acpi_gbl_root_node_struct.child     = NULL;
+	acpi_gbl_root_node_struct.peer      = NULL;
+	acpi_gbl_root_node_struct.object    = NULL;
+	acpi_gbl_root_node_struct.flags     = ANOBJ_END_OF_PEER_LIST;
+
+
+#ifdef ACPI_DEBUG_OUTPUT
+	acpi_gbl_lowest_stack_pointer       = ACPI_SIZE_MAX;
+#endif
+
+	return_VOID;
+}
+
+

drivers/acpi/utilities/utinit.c

@@ -0,0 +1,266 @@
+/******************************************************************************
+ *
+ * Module Name: utinit - Common ACPI subsystem initialization
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acevents.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utinit")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_fadt_register_error
+ *
+ * PARAMETERS:  *register_name          - Pointer to string identifying register
+ *              Value                   - Actual register contents value
+ *              acpi_test_spec_section  - TDS section containing assertion
+ *              acpi_assertion          - Assertion number being tested
+ *
+ * RETURN:      AE_BAD_VALUE
+ *
+ * DESCRIPTION: Display failure message and link failure to TDS assertion
+ *
+ ******************************************************************************/
+
+static void
+acpi_ut_fadt_register_error (
+	char                            *register_name,
+	u32                             value,
+	acpi_size                       offset)
+{
+
+	ACPI_REPORT_WARNING (
+		("Invalid FADT value %s=%X at offset %X FADT=%p\n",
+		register_name, value, (u32) offset, acpi_gbl_FADT));
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_validate_fadt
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Validate various ACPI registers in the FADT
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_validate_fadt (
+	void)
+{
+
+	/*
+	 * Verify Fixed ACPI Description Table fields,
+	 * but don't abort on any problems, just display error
+	 */
+	if (acpi_gbl_FADT->pm1_evt_len < 4) {
+		acpi_ut_fadt_register_error ("PM1_EVT_LEN",
+				  (u32) acpi_gbl_FADT->pm1_evt_len,
+				  ACPI_FADT_OFFSET (pm1_evt_len));
+	}
+
+	if (!acpi_gbl_FADT->pm1_cnt_len) {
+		acpi_ut_fadt_register_error ("PM1_CNT_LEN", 0,
+				  ACPI_FADT_OFFSET (pm1_cnt_len));
+	}
+
+	if (!acpi_gbl_FADT->xpm1a_evt_blk.address) {
+		acpi_ut_fadt_register_error ("X_PM1a_EVT_BLK", 0,
+				  ACPI_FADT_OFFSET (xpm1a_evt_blk.address));
+	}
+
+	if (!acpi_gbl_FADT->xpm1a_cnt_blk.address) {
+		acpi_ut_fadt_register_error ("X_PM1a_CNT_BLK", 0,
+				  ACPI_FADT_OFFSET (xpm1a_cnt_blk.address));
+	}
+
+	if (!acpi_gbl_FADT->xpm_tmr_blk.address) {
+		acpi_ut_fadt_register_error ("X_PM_TMR_BLK", 0,
+				  ACPI_FADT_OFFSET (xpm_tmr_blk.address));
+	}
+
+	if ((acpi_gbl_FADT->xpm2_cnt_blk.address &&
+		!acpi_gbl_FADT->pm2_cnt_len)) {
+		acpi_ut_fadt_register_error ("PM2_CNT_LEN",
+				  (u32) acpi_gbl_FADT->pm2_cnt_len,
+				  ACPI_FADT_OFFSET (pm2_cnt_len));
+	}
+
+	if (acpi_gbl_FADT->pm_tm_len < 4) {
+		acpi_ut_fadt_register_error ("PM_TM_LEN",
+				  (u32) acpi_gbl_FADT->pm_tm_len,
+				  ACPI_FADT_OFFSET (pm_tm_len));
+	}
+
+	/* Length of GPE blocks must be a multiple of 2 */
+
+	if (acpi_gbl_FADT->xgpe0_blk.address &&
+		(acpi_gbl_FADT->gpe0_blk_len & 1)) {
+		acpi_ut_fadt_register_error ("(x)GPE0_BLK_LEN",
+				  (u32) acpi_gbl_FADT->gpe0_blk_len,
+				  ACPI_FADT_OFFSET (gpe0_blk_len));
+	}
+
+	if (acpi_gbl_FADT->xgpe1_blk.address &&
+		(acpi_gbl_FADT->gpe1_blk_len & 1)) {
+		acpi_ut_fadt_register_error ("(x)GPE1_BLK_LEN",
+				  (u32) acpi_gbl_FADT->gpe1_blk_len,
+				  ACPI_FADT_OFFSET (gpe1_blk_len));
+	}
+
+	return (AE_OK);
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_terminate
+ *
+ * PARAMETERS:  none
+ *
+ * RETURN:      none
+ *
+ * DESCRIPTION: free global memory
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_terminate (void)
+{
+	struct acpi_gpe_block_info      *gpe_block;
+	struct acpi_gpe_block_info      *next_gpe_block;
+	struct acpi_gpe_xrupt_info      *gpe_xrupt_info;
+	struct acpi_gpe_xrupt_info      *next_gpe_xrupt_info;
+
+
+	ACPI_FUNCTION_TRACE ("ut_terminate");
+
+
+	/* Free global tables, etc. */
+
+
+	/* Free global GPE blocks and related info structures */
+
+	gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
+	while (gpe_xrupt_info) {
+		gpe_block = gpe_xrupt_info->gpe_block_list_head;
+		while (gpe_block) {
+			next_gpe_block = gpe_block->next;
+			ACPI_MEM_FREE (gpe_block->event_info);
+			ACPI_MEM_FREE (gpe_block->register_info);
+			ACPI_MEM_FREE (gpe_block);
+
+			gpe_block = next_gpe_block;
+		}
+		next_gpe_xrupt_info = gpe_xrupt_info->next;
+		ACPI_MEM_FREE (gpe_xrupt_info);
+		gpe_xrupt_info = next_gpe_xrupt_info;
+	}
+
+	return_VOID;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_subsystem_shutdown
+ *
+ * PARAMETERS:  none
+ *
+ * RETURN:      none
+ *
+ * DESCRIPTION: Shutdown the various subsystems.  Don't delete the mutex
+ *              objects here -- because the AML debugger may be still running.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_subsystem_shutdown (void)
+{
+
+	ACPI_FUNCTION_TRACE ("ut_subsystem_shutdown");
+
+	/* Just exit if subsystem is already shutdown */
+
+	if (acpi_gbl_shutdown) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "ACPI Subsystem is already terminated\n"));
+		return_VOID;
+	}
+
+	/* Subsystem appears active, go ahead and shut it down */
+
+	acpi_gbl_shutdown = TRUE;
+	ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Shutting down ACPI Subsystem...\n"));
+
+	/* Close the acpi_event Handling */
+
+	acpi_ev_terminate ();
+
+	/* Close the Namespace */
+
+	acpi_ns_terminate ();
+
+	/* Close the globals */
+
+	acpi_ut_terminate ();
+
+	/* Purge the local caches */
+
+	(void) acpi_purge_cached_objects ();
+
+	/* Debug only - display leftover memory allocation, if any */
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+	acpi_ut_dump_allocations (ACPI_UINT32_MAX, NULL);
+#endif
+
+	return_VOID;
+}
+
+

drivers/acpi/utilities/utmath.c

@@ -0,0 +1,333 @@
+/*******************************************************************************
+ *
+ * Module Name: utmath - Integer math support routines
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utmath")
+
+/*
+ * Support for double-precision integer divide.  This code is included here
+ * in order to support kernel environments where the double-precision math
+ * library is not available.
+ */
+
+#ifndef ACPI_USE_NATIVE_DIVIDE
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_short_divide
+ *
+ * PARAMETERS:  Dividend            - 64-bit dividend
+ *              Divisor             - 32-bit divisor
+ *              out_quotient        - Pointer to where the quotient is returned
+ *              out_remainder       - Pointer to where the remainder is returned
+ *
+ * RETURN:      Status (Checks for divide-by-zero)
+ *
+ * DESCRIPTION: Perform a short (maximum 64 bits divided by 32 bits)
+ *              divide and modulo.  The result is a 64-bit quotient and a
+ *              32-bit remainder.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_short_divide (
+	acpi_integer                    dividend,
+	u32                             divisor,
+	acpi_integer                    *out_quotient,
+	u32                             *out_remainder)
+{
+	union uint64_overlay            dividend_ovl;
+	union uint64_overlay            quotient;
+	u32                             remainder32;
+
+
+	ACPI_FUNCTION_TRACE ("ut_short_divide");
+
+
+	/* Always check for a zero divisor */
+
+	if (divisor == 0) {
+		ACPI_REPORT_ERROR (("acpi_ut_short_divide: Divide by zero\n"));
+		return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO);
+	}
+
+	dividend_ovl.full = dividend;
+
+	/*
+	 * The quotient is 64 bits, the remainder is always 32 bits,
+	 * and is generated by the second divide.
+	 */
+	ACPI_DIV_64_BY_32 (0, dividend_ovl.part.hi, divisor,
+			  quotient.part.hi, remainder32);
+	ACPI_DIV_64_BY_32 (remainder32, dividend_ovl.part.lo, divisor,
+			  quotient.part.lo, remainder32);
+
+	/* Return only what was requested */
+
+	if (out_quotient) {
+		*out_quotient = quotient.full;
+	}
+	if (out_remainder) {
+		*out_remainder = remainder32;
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_divide
+ *
+ * PARAMETERS:  in_dividend         - Dividend
+ *              in_divisor          - Divisor
+ *              out_quotient        - Pointer to where the quotient is returned
+ *              out_remainder       - Pointer to where the remainder is returned
+ *
+ * RETURN:      Status (Checks for divide-by-zero)
+ *
+ * DESCRIPTION: Perform a divide and modulo.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_divide (
+	acpi_integer                    in_dividend,
+	acpi_integer                    in_divisor,
+	acpi_integer                    *out_quotient,
+	acpi_integer                    *out_remainder)
+{
+	union uint64_overlay            dividend;
+	union uint64_overlay            divisor;
+	union uint64_overlay            quotient;
+	union uint64_overlay            remainder;
+	union uint64_overlay            normalized_dividend;
+	union uint64_overlay            normalized_divisor;
+	u32                             partial1;
+	union uint64_overlay            partial2;
+	union uint64_overlay            partial3;
+
+
+	ACPI_FUNCTION_TRACE ("ut_divide");
+
+
+	/* Always check for a zero divisor */
+
+	if (in_divisor == 0) {
+		ACPI_REPORT_ERROR (("acpi_ut_divide: Divide by zero\n"));
+		return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO);
+	}
+
+	divisor.full  = in_divisor;
+	dividend.full = in_dividend;
+	if (divisor.part.hi == 0) {
+		/*
+		 * 1) Simplest case is where the divisor is 32 bits, we can
+		 * just do two divides
+		 */
+		remainder.part.hi = 0;
+
+		/*
+		 * The quotient is 64 bits, the remainder is always 32 bits,
+		 * and is generated by the second divide.
+		 */
+		ACPI_DIV_64_BY_32 (0, dividend.part.hi, divisor.part.lo,
+				  quotient.part.hi, partial1);
+		ACPI_DIV_64_BY_32 (partial1, dividend.part.lo, divisor.part.lo,
+				  quotient.part.lo, remainder.part.lo);
+	}
+
+	else {
+		/*
+		 * 2) The general case where the divisor is a full 64 bits
+		 * is more difficult
+		 */
+		quotient.part.hi   = 0;
+		normalized_dividend = dividend;
+		normalized_divisor = divisor;
+
+		/* Normalize the operands (shift until the divisor is < 32 bits) */
+
+		do {
+			ACPI_SHIFT_RIGHT_64 (normalized_divisor.part.hi,
+					 normalized_divisor.part.lo);
+			ACPI_SHIFT_RIGHT_64 (normalized_dividend.part.hi,
+					 normalized_dividend.part.lo);
+
+		} while (normalized_divisor.part.hi != 0);
+
+		/* Partial divide */
+
+		ACPI_DIV_64_BY_32 (normalized_dividend.part.hi,
+				  normalized_dividend.part.lo,
+				  normalized_divisor.part.lo,
+				  quotient.part.lo, partial1);
+
+		/*
+		 * The quotient is always 32 bits, and simply requires adjustment.
+		 * The 64-bit remainder must be generated.
+		 */
+		partial1      = quotient.part.lo * divisor.part.hi;
+		partial2.full = (acpi_integer) quotient.part.lo * divisor.part.lo;
+		partial3.full = (acpi_integer) partial2.part.hi + partial1;
+
+		remainder.part.hi = partial3.part.lo;
+		remainder.part.lo = partial2.part.lo;
+
+		if (partial3.part.hi == 0) {
+			if (partial3.part.lo >= dividend.part.hi) {
+				if (partial3.part.lo == dividend.part.hi) {
+					if (partial2.part.lo > dividend.part.lo) {
+						quotient.part.lo--;
+						remainder.full -= divisor.full;
+					}
+				}
+				else {
+					quotient.part.lo--;
+					remainder.full -= divisor.full;
+				}
+			}
+
+			remainder.full    = remainder.full - dividend.full;
+			remainder.part.hi = (u32) -((s32) remainder.part.hi);
+			remainder.part.lo = (u32) -((s32) remainder.part.lo);
+
+			if (remainder.part.lo) {
+				remainder.part.hi--;
+			}
+		}
+	}
+
+	/* Return only what was requested */
+
+	if (out_quotient) {
+		*out_quotient = quotient.full;
+	}
+	if (out_remainder) {
+		*out_remainder = remainder.full;
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+#else
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_short_divide, acpi_ut_divide
+ *
+ * DESCRIPTION: Native versions of the ut_divide functions. Use these if either
+ *              1) The target is a 64-bit platform and therefore 64-bit
+ *                 integer math is supported directly by the machine.
+ *              2) The target is a 32-bit or 16-bit platform, and the
+ *                 double-precision integer math library is available to
+ *                 perform the divide.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_short_divide (
+	acpi_integer                    in_dividend,
+	u32                             divisor,
+	acpi_integer                    *out_quotient,
+	u32                             *out_remainder)
+{
+
+	ACPI_FUNCTION_TRACE ("ut_short_divide");
+
+
+	/* Always check for a zero divisor */
+
+	if (divisor == 0) {
+		ACPI_REPORT_ERROR (("acpi_ut_short_divide: Divide by zero\n"));
+		return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO);
+	}
+
+	/* Return only what was requested */
+
+	if (out_quotient) {
+		*out_quotient = in_dividend / divisor;
+	}
+	if (out_remainder) {
+		*out_remainder = (u32) in_dividend % divisor;
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+acpi_status
+acpi_ut_divide (
+	acpi_integer                    in_dividend,
+	acpi_integer                    in_divisor,
+	acpi_integer                    *out_quotient,
+	acpi_integer                    *out_remainder)
+{
+	ACPI_FUNCTION_TRACE ("ut_divide");
+
+
+	/* Always check for a zero divisor */
+
+	if (in_divisor == 0) {
+		ACPI_REPORT_ERROR (("acpi_ut_divide: Divide by zero\n"));
+		return_ACPI_STATUS (AE_AML_DIVIDE_BY_ZERO);
+	}
+
+
+	/* Return only what was requested */
+
+	if (out_quotient) {
+		*out_quotient = in_dividend / in_divisor;
+	}
+	if (out_remainder) {
+		*out_remainder = in_dividend % in_divisor;
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+#endif
+
+

drivers/acpi/utilities/utobject.c

@@ -0,0 +1,671 @@
+/******************************************************************************
+ *
+ * Module Name: utobject - ACPI object create/delete/size/cache routines
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+#include <acpi/amlcode.h>
+
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utobject")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_internal_object_dbg
+ *
+ * PARAMETERS:  module_name         - Source file name of caller
+ *              line_number         - Line number of caller
+ *              component_id        - Component type of caller
+ *              Type                - ACPI Type of the new object
+ *
+ * RETURN:      Object              - The new object.  Null on failure
+ *
+ * DESCRIPTION: Create and initialize a new internal object.
+ *
+ * NOTE:        We always allocate the worst-case object descriptor because
+ *              these objects are cached, and we want them to be
+ *              one-size-satisifies-any-request.  This in itself may not be
+ *              the most memory efficient, but the efficiency of the object
+ *              cache should more than make up for this!
+ *
+ ******************************************************************************/
+
+union acpi_operand_object    *
+acpi_ut_create_internal_object_dbg (
+	char                            *module_name,
+	u32                             line_number,
+	u32                             component_id,
+	acpi_object_type                type)
+{
+	union acpi_operand_object       *object;
+	union acpi_operand_object       *second_object;
+
+
+	ACPI_FUNCTION_TRACE_STR ("ut_create_internal_object_dbg", acpi_ut_get_type_name (type));
+
+
+	/* Allocate the raw object descriptor */
+
+	object = acpi_ut_allocate_object_desc_dbg (module_name, line_number, component_id);
+	if (!object) {
+		return_PTR (NULL);
+	}
+
+	switch (type) {
+	case ACPI_TYPE_REGION:
+	case ACPI_TYPE_BUFFER_FIELD:
+
+		/* These types require a secondary object */
+
+		second_object = acpi_ut_allocate_object_desc_dbg (module_name, line_number, component_id);
+		if (!second_object) {
+			acpi_ut_delete_object_desc (object);
+			return_PTR (NULL);
+		}
+
+		second_object->common.type = ACPI_TYPE_LOCAL_EXTRA;
+		second_object->common.reference_count = 1;
+
+		/* Link the second object to the first */
+
+		object->common.next_object = second_object;
+		break;
+
+	default:
+		/* All others have no secondary object */
+		break;
+	}
+
+	/* Save the object type in the object descriptor */
+
+	object->common.type = (u8) type;
+
+	/* Init the reference count */
+
+	object->common.reference_count = 1;
+
+	/* Any per-type initialization should go here */
+
+	return_PTR (object);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_buffer_object
+ *
+ * PARAMETERS:  buffer_size            - Size of buffer to be created
+ *
+ * RETURN:      Pointer to a new Buffer object
+ *
+ * DESCRIPTION: Create a fully initialized buffer object
+ *
+ ******************************************************************************/
+
+union acpi_operand_object *
+acpi_ut_create_buffer_object (
+	acpi_size                       buffer_size)
+{
+	union acpi_operand_object       *buffer_desc;
+	u8                              *buffer = NULL;
+
+
+	ACPI_FUNCTION_TRACE_U32 ("ut_create_buffer_object", buffer_size);
+
+
+	/* Create a new Buffer object */
+
+	buffer_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+	if (!buffer_desc) {
+		return_PTR (NULL);
+	}
+
+	/* Create an actual buffer only if size > 0 */
+
+	if (buffer_size > 0) {
+		/* Allocate the actual buffer */
+
+		buffer = ACPI_MEM_CALLOCATE (buffer_size);
+		if (!buffer) {
+			ACPI_REPORT_ERROR (("create_buffer: could not allocate size %X\n",
+				(u32) buffer_size));
+			acpi_ut_remove_reference (buffer_desc);
+			return_PTR (NULL);
+		}
+	}
+
+	/* Complete buffer object initialization */
+
+	buffer_desc->buffer.flags |= AOPOBJ_DATA_VALID;
+	buffer_desc->buffer.pointer = buffer;
+	buffer_desc->buffer.length = (u32) buffer_size;
+
+	/* Return the new buffer descriptor */
+
+	return_PTR (buffer_desc);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_string_object
+ *
+ * PARAMETERS:  string_size            - Size of string to be created.  Does not
+ *                                       include NULL terminator, this is added
+ *                                       automatically.
+ *
+ * RETURN:      Pointer to a new String object
+ *
+ * DESCRIPTION: Create a fully initialized string object
+ *
+ ******************************************************************************/
+
+union acpi_operand_object *
+acpi_ut_create_string_object (
+	acpi_size                       string_size)
+{
+	union acpi_operand_object       *string_desc;
+	char                            *string;
+
+
+	ACPI_FUNCTION_TRACE_U32 ("ut_create_string_object", string_size);
+
+
+	/* Create a new String object */
+
+	string_desc = acpi_ut_create_internal_object (ACPI_TYPE_STRING);
+	if (!string_desc) {
+		return_PTR (NULL);
+	}
+
+	/*
+	 * Allocate the actual string buffer -- (Size + 1) for NULL terminator.
+	 * NOTE: Zero-length strings are NULL terminated
+	 */
+	string = ACPI_MEM_CALLOCATE (string_size + 1);
+	if (!string) {
+		ACPI_REPORT_ERROR (("create_string: could not allocate size %X\n",
+			(u32) string_size));
+		acpi_ut_remove_reference (string_desc);
+		return_PTR (NULL);
+	}
+
+	/* Complete string object initialization */
+
+	string_desc->string.pointer = string;
+	string_desc->string.length = (u32) string_size;
+
+	/* Return the new string descriptor */
+
+	return_PTR (string_desc);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_valid_internal_object
+ *
+ * PARAMETERS:  Object              - Object to be validated
+ *
+ * RETURN:      Validate a pointer to be an union acpi_operand_object
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_valid_internal_object (
+	void                            *object)
+{
+
+	ACPI_FUNCTION_NAME ("ut_valid_internal_object");
+
+
+	/* Check for a null pointer */
+
+	if (!object) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Null Object Ptr\n"));
+		return (FALSE);
+	}
+
+	/* Check the descriptor type field */
+
+	switch (ACPI_GET_DESCRIPTOR_TYPE (object)) {
+	case ACPI_DESC_TYPE_OPERAND:
+
+		/* The object appears to be a valid union acpi_operand_object    */
+
+		return (TRUE);
+
+	default:
+		ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+				"%p is not not an ACPI operand obj [%s]\n",
+				object, acpi_ut_get_descriptor_name (object)));
+		break;
+	}
+
+	return (FALSE);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_allocate_object_desc_dbg
+ *
+ * PARAMETERS:  module_name         - Caller's module name (for error output)
+ *              line_number         - Caller's line number (for error output)
+ *              component_id        - Caller's component ID (for error output)
+ *
+ * RETURN:      Pointer to newly allocated object descriptor.  Null on error
+ *
+ * DESCRIPTION: Allocate a new object descriptor.  Gracefully handle
+ *              error conditions.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ut_allocate_object_desc_dbg (
+	char                            *module_name,
+	u32                             line_number,
+	u32                             component_id)
+{
+	union acpi_operand_object       *object;
+
+
+	ACPI_FUNCTION_TRACE ("ut_allocate_object_desc_dbg");
+
+
+	object = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_OPERAND);
+	if (!object) {
+		_ACPI_REPORT_ERROR (module_name, line_number, component_id,
+				  ("Could not allocate an object descriptor\n"));
+
+		return_PTR (NULL);
+	}
+
+	/* Mark the descriptor type */
+
+	ACPI_SET_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_OPERAND);
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n",
+			object, (u32) sizeof (union acpi_operand_object)));
+
+	return_PTR (object);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_object_desc
+ *
+ * PARAMETERS:  Object          - An Acpi internal object to be deleted
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_object_desc (
+	union acpi_operand_object       *object)
+{
+	ACPI_FUNCTION_TRACE_PTR ("ut_delete_object_desc", object);
+
+
+	/* Object must be an union acpi_operand_object    */
+
+	if (ACPI_GET_DESCRIPTOR_TYPE (object) != ACPI_DESC_TYPE_OPERAND) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"%p is not an ACPI Operand object [%s]\n", object,
+				acpi_ut_get_descriptor_name (object)));
+		return_VOID;
+	}
+
+	acpi_ut_release_to_cache (ACPI_MEM_LIST_OPERAND, object);
+
+	return_VOID;
+}
+
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_delete_object_cache
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Purge the global state object cache.  Used during subsystem
+ *              termination.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_object_cache (
+	void)
+{
+	ACPI_FUNCTION_TRACE ("ut_delete_object_cache");
+
+
+	acpi_ut_delete_generic_cache (ACPI_MEM_LIST_OPERAND);
+	return_VOID;
+}
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_simple_object_size
+ *
+ * PARAMETERS:  *internal_object    - Pointer to the object we are examining
+ *              *obj_length         - Where the length is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to determine the space required to
+ *              contain a simple object for return to an external user.
+ *
+ *              The length includes the object structure plus any additional
+ *              needed space.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_simple_object_size (
+	union acpi_operand_object       *internal_object,
+	acpi_size                       *obj_length)
+{
+	acpi_size                       length;
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_get_simple_object_size", internal_object);
+
+
+	/* Handle a null object (Could be a uninitialized package element -- which is legal) */
+
+	if (!internal_object) {
+		*obj_length = 0;
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	/* Start with the length of the Acpi object */
+
+	length = sizeof (union acpi_object);
+
+	if (ACPI_GET_DESCRIPTOR_TYPE (internal_object) == ACPI_DESC_TYPE_NAMED) {
+		/* Object is a named object (reference), just return the length */
+
+		*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD (length);
+		return_ACPI_STATUS (status);
+	}
+
+	/*
+	 * The final length depends on the object type
+	 * Strings and Buffers are packed right up against the parent object and
+	 * must be accessed bytewise or there may be alignment problems on
+	 * certain processors
+	 */
+	switch (ACPI_GET_OBJECT_TYPE (internal_object)) {
+	case ACPI_TYPE_STRING:
+
+		length += (acpi_size) internal_object->string.length + 1;
+		break;
+
+
+	case ACPI_TYPE_BUFFER:
+
+		length += (acpi_size) internal_object->buffer.length;
+		break;
+
+
+	case ACPI_TYPE_INTEGER:
+	case ACPI_TYPE_PROCESSOR:
+	case ACPI_TYPE_POWER:
+
+		/*
+		 * No extra data for these types
+		 */
+		break;
+
+
+	case ACPI_TYPE_LOCAL_REFERENCE:
+
+		switch (internal_object->reference.opcode) {
+		case AML_INT_NAMEPATH_OP:
+
+			/*
+			 * Get the actual length of the full pathname to this object.
+			 * The reference will be converted to the pathname to the object
+			 */
+			length += ACPI_ROUND_UP_TO_NATIVE_WORD (acpi_ns_get_pathname_length (internal_object->reference.node));
+			break;
+
+		default:
+
+			/*
+			 * No other reference opcodes are supported.
+			 * Notably, Locals and Args are not supported, but this may be
+			 * required eventually.
+			 */
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Unsupported Reference opcode=%X in object %p\n",
+				internal_object->reference.opcode, internal_object));
+			status = AE_TYPE;
+			break;
+		}
+		break;
+
+
+	default:
+
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported type=%X in object %p\n",
+			ACPI_GET_OBJECT_TYPE (internal_object), internal_object));
+		status = AE_TYPE;
+		break;
+	}
+
+	/*
+	 * Account for the space required by the object rounded up to the next
+	 * multiple of the machine word size.  This keeps each object aligned
+	 * on a machine word boundary. (preventing alignment faults on some
+	 * machines.)
+	 */
+	*obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD (length);
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_element_length
+ *
+ * PARAMETERS:  acpi_pkg_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get the length of one package element.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_element_length (
+	u8                              object_type,
+	union acpi_operand_object       *source_object,
+	union acpi_generic_state        *state,
+	void                            *context)
+{
+	acpi_status                     status = AE_OK;
+	struct acpi_pkg_info            *info = (struct acpi_pkg_info *) context;
+	acpi_size                       object_space;
+
+
+	switch (object_type) {
+	case ACPI_COPY_TYPE_SIMPLE:
+
+		/*
+		 * Simple object - just get the size (Null object/entry is handled
+		 * here also) and sum it into the running package length
+		 */
+		status = acpi_ut_get_simple_object_size (source_object, &object_space);
+		if (ACPI_FAILURE (status)) {
+			return (status);
+		}
+
+		info->length += object_space;
+		break;
+
+
+	case ACPI_COPY_TYPE_PACKAGE:
+
+		/* Package object - nothing much to do here, let the walk handle it */
+
+		info->num_packages++;
+		state->pkg.this_target_obj = NULL;
+		break;
+
+
+	default:
+
+		/* No other types allowed */
+
+		return (AE_BAD_PARAMETER);
+	}
+
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_package_object_size
+ *
+ * PARAMETERS:  *internal_object    - Pointer to the object we are examining
+ *              *obj_length         - Where the length is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to determine the space required to
+ *              contain a package object for return to an external user.
+ *
+ *              This is moderately complex since a package contains other
+ *              objects including packages.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_package_object_size (
+	union acpi_operand_object       *internal_object,
+	acpi_size                       *obj_length)
+{
+	acpi_status                     status;
+	struct acpi_pkg_info            info;
+
+
+	ACPI_FUNCTION_TRACE_PTR ("ut_get_package_object_size", internal_object);
+
+
+	info.length      = 0;
+	info.object_space = 0;
+	info.num_packages = 1;
+
+	status = acpi_ut_walk_package_tree (internal_object, NULL,
+			 acpi_ut_get_element_length, &info);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	/*
+	 * We have handled all of the objects in all levels of the package.
+	 * just add the length of the package objects themselves.
+	 * Round up to the next machine word.
+	 */
+	info.length += ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object)) *
+			  (acpi_size) info.num_packages;
+
+	/* Return the total package length */
+
+	*obj_length = info.length;
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_object_size
+ *
+ * PARAMETERS:  *internal_object    - Pointer to the object we are examining
+ *              *obj_length         - Where the length will be returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to determine the space required to
+ *              contain an object for return to an API user.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_object_size(
+	union acpi_operand_object       *internal_object,
+	acpi_size                       *obj_length)
+{
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	if ((ACPI_GET_DESCRIPTOR_TYPE (internal_object) == ACPI_DESC_TYPE_OPERAND) &&
+		(ACPI_GET_OBJECT_TYPE (internal_object) == ACPI_TYPE_PACKAGE)) {
+		status = acpi_ut_get_package_object_size (internal_object, obj_length);
+	}
+	else {
+		status = acpi_ut_get_simple_object_size (internal_object, obj_length);
+	}
+
+	return (status);
+}
+
+

drivers/acpi/utilities/utxface.c

@@ -0,0 +1,525 @@
+/******************************************************************************
+ *
+ * Module Name: utxface - External interfaces for "global" ACPI functions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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.
+ */
+
+#include <linux/module.h>
+
+#include <acpi/acpi.h>
+#include <acpi/acevents.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acparser.h>
+#include <acpi/acdispat.h>
+#include <acpi/acdebug.h>
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utxface")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_initialize_subsystem
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initializes all global variables.  This is the first function
+ *              called, so any early initialization belongs here.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_initialize_subsystem (
+	void)
+{
+	acpi_status                     status;
+
+	ACPI_FUNCTION_TRACE ("acpi_initialize_subsystem");
+
+
+	ACPI_DEBUG_EXEC (acpi_ut_init_stack_ptr_trace ());
+
+
+	/* Initialize all globals used by the subsystem */
+
+	acpi_ut_init_globals ();
+
+	/* Initialize the OS-Dependent layer */
+
+	status = acpi_os_initialize ();
+	if (ACPI_FAILURE (status)) {
+		ACPI_REPORT_ERROR (("OSD failed to initialize, %s\n",
+			acpi_format_exception (status)));
+		return_ACPI_STATUS (status);
+	}
+
+	/* Create the default mutex objects */
+
+	status = acpi_ut_mutex_initialize ();
+	if (ACPI_FAILURE (status)) {
+		ACPI_REPORT_ERROR (("Global mutex creation failure, %s\n",
+			acpi_format_exception (status)));
+		return_ACPI_STATUS (status);
+	}
+
+	/*
+	 * Initialize the namespace manager and
+	 * the root of the namespace tree
+	 */
+
+	status = acpi_ns_root_initialize ();
+	if (ACPI_FAILURE (status)) {
+		ACPI_REPORT_ERROR (("Namespace initialization failure, %s\n",
+			acpi_format_exception (status)));
+		return_ACPI_STATUS (status);
+	}
+
+
+	/* If configured, initialize the AML debugger */
+
+	ACPI_DEBUGGER_EXEC (status = acpi_db_initialize ());
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_enable_subsystem
+ *
+ * PARAMETERS:  Flags           - Init/enable Options
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Completes the subsystem initialization including hardware.
+ *              Puts system into ACPI mode if it isn't already.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_enable_subsystem (
+	u32                             flags)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("acpi_enable_subsystem");
+
+
+	/*
+	 * We must initialize the hardware before we can enable ACPI.
+	 * The values from the FADT are validated here.
+	 */
+	if (!(flags & ACPI_NO_HARDWARE_INIT)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI hardware\n"));
+
+		status = acpi_hw_initialize ();
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/* Enable ACPI mode */
+
+	if (!(flags & ACPI_NO_ACPI_ENABLE)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
+
+		acpi_gbl_original_mode = acpi_hw_get_mode();
+
+		status = acpi_enable ();
+		if (ACPI_FAILURE (status)) {
+			ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "acpi_enable failed.\n"));
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/*
+	 * Install the default op_region handlers. These are installed unless
+	 * other handlers have already been installed via the
+	 * install_address_space_handler interface.
+	 */
+	if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing default address space handlers\n"));
+
+		status = acpi_ev_install_region_handlers ();
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/*
+	 * Initialize ACPI Event handling (Fixed and General Purpose)
+	 *
+	 * NOTE: We must have the hardware AND events initialized before we can execute
+	 * ANY control methods SAFELY.  Any control method can require ACPI hardware
+	 * support, so the hardware MUST be initialized before execution!
+	 */
+	if (!(flags & ACPI_NO_EVENT_INIT)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI events\n"));
+
+		status = acpi_ev_initialize_events ();
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/* Install the SCI handler and Global Lock handler */
+
+	if (!(flags & ACPI_NO_HANDLER_INIT)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing SCI/GL handlers\n"));
+
+		status = acpi_ev_install_xrupt_handlers ();
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_initialize_objects
+ *
+ * PARAMETERS:  Flags           - Init/enable Options
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Completes namespace initialization by initializing device
+ *              objects and executing AML code for Regions, buffers, etc.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_initialize_objects (
+	u32                             flags)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("acpi_initialize_objects");
+
+
+	/*
+	 * Run all _REG methods
+	 *
+	 * NOTE: Any objects accessed
+	 * by the _REG methods will be automatically initialized, even if they
+	 * contain executable AML (see call to acpi_ns_initialize_objects below).
+	 */
+	if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Executing _REG op_region methods\n"));
+
+		status = acpi_ev_initialize_op_regions ();
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/*
+	 * Initialize the objects that remain uninitialized.  This
+	 * runs the executable AML that may be part of the declaration of these
+	 * objects: operation_regions, buffer_fields, Buffers, and Packages.
+	 */
+	if (!(flags & ACPI_NO_OBJECT_INIT)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Completing Initialization of ACPI Objects\n"));
+
+		status = acpi_ns_initialize_objects ();
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/*
+	 * Initialize all device objects in the namespace
+	 * This runs the _STA and _INI methods.
+	 */
+	if (!(flags & ACPI_NO_DEVICE_INIT)) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI Devices\n"));
+
+		status = acpi_ns_initialize_devices ();
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	}
+
+	/*
+	 * Empty the caches (delete the cached objects) on the assumption that
+	 * the table load filled them up more than they will be at runtime --
+	 * thus wasting non-paged memory.
+	 */
+	status = acpi_purge_cached_objects ();
+
+	acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_terminate
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Shutdown the ACPI subsystem.  Release all resources.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_terminate (void)
+{
+	acpi_status                 status;
+
+
+	ACPI_FUNCTION_TRACE ("acpi_terminate");
+
+
+	/* Terminate the AML Debugger if present */
+
+	ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);
+
+	/* Shutdown and free all resources */
+
+	acpi_ut_subsystem_shutdown ();
+
+
+	/* Free the mutex objects */
+
+	acpi_ut_mutex_terminate ();
+
+
+#ifdef ACPI_DEBUGGER
+
+	/* Shut down the debugger */
+
+	acpi_db_terminate ();
+#endif
+
+	/* Now we can shutdown the OS-dependent layer */
+
+	status = acpi_os_terminate ();
+	return_ACPI_STATUS (status);
+}
+
+
+#ifdef ACPI_FUTURE_USAGE
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_subsystem_status
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status of the ACPI subsystem
+ *
+ * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
+ *              before making any other calls, to ensure the subsystem initial-
+ *              ized successfully.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_subsystem_status (void)
+{
+	if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) {
+		return (AE_OK);
+	}
+	else {
+		return (AE_ERROR);
+	}
+}
+
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_get_system_info
+ *
+ * PARAMETERS:  out_buffer      - a pointer to a buffer to receive the
+ *                                resources for the device
+ *              buffer_length   - the number of bytes available in the buffer
+ *
+ * RETURN:      Status          - the status of the call
+ *
+ * DESCRIPTION: This function is called to get information about the current
+ *              state of the ACPI subsystem.  It will return system information
+ *              in the out_buffer.
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the value of out_buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_get_system_info (
+	struct acpi_buffer              *out_buffer)
+{
+	struct acpi_system_info         *info_ptr;
+	u32                             i;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("acpi_get_system_info");
+
+
+	/* Parameter validation */
+
+	status = acpi_ut_validate_buffer (out_buffer);
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	/* Validate/Allocate/Clear caller buffer */
+
+	status = acpi_ut_initialize_buffer (out_buffer, sizeof (struct acpi_system_info));
+	if (ACPI_FAILURE (status)) {
+		return_ACPI_STATUS (status);
+	}
+
+	/*
+	 * Populate the return buffer
+	 */
+	info_ptr = (struct acpi_system_info *) out_buffer->pointer;
+
+	info_ptr->acpi_ca_version   = ACPI_CA_VERSION;
+
+	/* System flags (ACPI capabilities) */
+
+	info_ptr->flags             = ACPI_SYS_MODE_ACPI;
+
+	/* Timer resolution - 24 or 32 bits  */
+
+	if (!acpi_gbl_FADT) {
+		info_ptr->timer_resolution = 0;
+	}
+	else if (acpi_gbl_FADT->tmr_val_ext == 0) {
+		info_ptr->timer_resolution = 24;
+	}
+	else {
+		info_ptr->timer_resolution = 32;
+	}
+
+	/* Clear the reserved fields */
+
+	info_ptr->reserved1         = 0;
+	info_ptr->reserved2         = 0;
+
+	/* Current debug levels */
+
+	info_ptr->debug_layer       = acpi_dbg_layer;
+	info_ptr->debug_level       = acpi_dbg_level;
+
+	/* Current status of the ACPI tables, per table type */
+
+	info_ptr->num_table_types = NUM_ACPI_TABLE_TYPES;
+	for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) {
+		info_ptr->table_info[i].count = acpi_gbl_table_lists[i].count;
+	}
+
+	return_ACPI_STATUS (AE_OK);
+}
+EXPORT_SYMBOL(acpi_get_system_info);
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_install_initialization_handler
+ *
+ * PARAMETERS:  Handler             - Callback procedure
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install an initialization handler
+ *
+ * TBD: When a second function is added, must save the Function also.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_install_initialization_handler (
+	acpi_init_handler               handler,
+	u32                             function)
+{
+
+	if (!handler) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	if (acpi_gbl_init_handler) {
+		return (AE_ALREADY_EXISTS);
+	}
+
+	acpi_gbl_init_handler = handler;
+	return AE_OK;
+}
+
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_purge_cached_objects
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Empty all caches (delete the cached objects)
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_purge_cached_objects (void)
+{
+	ACPI_FUNCTION_TRACE ("acpi_purge_cached_objects");
+
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+	acpi_ut_delete_generic_state_cache ();
+	acpi_ut_delete_object_cache ();
+	acpi_ds_delete_walk_state_cache ();
+	acpi_ps_delete_parse_cache ();
+#endif
+
+	return_ACPI_STATUS (AE_OK);
+}