Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 671 insertions, 0 deletions

diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
new file mode 100644
index 000000000000..9ee40a484e07
--- /dev/null
+++ b/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);
+}
+
+