patch-2.4.6 linux/drivers/acpi/common/cmcopy.c
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- Lines: 709
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.5/linux/drivers/acpi/common/cmcopy.c
- Orig date:
Fri Feb 9 11:45:58 2001
diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/common/cmcopy.c linux/drivers/acpi/common/cmcopy.c
@@ -1,708 +0,0 @@
-/******************************************************************************
- *
- * Module Name: cmcopy - Internal to external object translation utilities
- * $Revision: 66 $
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000, 2001 R. Byron Moore
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include "acpi.h"
-#include "acinterp.h"
-#include "acnamesp.h"
-#include "amlcode.h"
-
-
-#define _COMPONENT MISCELLANEOUS
- MODULE_NAME ("cmcopy")
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_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_cm_copy_isimple_to_esimple (
- ACPI_OPERAND_OBJECT *internal_object,
- ACPI_OBJECT *external_object,
- u8 *data_space,
- u32 *buffer_space_used)
-{
- u32 length = 0;
- ACPI_STATUS status = AE_OK;
-
-
- /*
- * Check for NULL object case (could be an uninitialized
- * package element
- */
-
- if (!internal_object) {
- *buffer_space_used = 0;
- return (AE_OK);
- }
-
- /* Always clear the external object */
-
- MEMSET (external_object, 0, sizeof (ACPI_OBJECT));
-
- /*
- * In general, the external object will be the same type as
- * the internal object
- */
-
- external_object->type = internal_object->common.type;
-
- /* However, only a limited number of external types are supported */
-
- switch (internal_object->common.type)
- {
-
- case ACPI_TYPE_STRING:
-
- length = internal_object->string.length + 1;
- external_object->string.length = internal_object->string.length;
- external_object->string.pointer = (NATIVE_CHAR *) data_space;
- MEMCPY ((void *) data_space, (void *) internal_object->string.pointer, length);
- break;
-
-
- case ACPI_TYPE_BUFFER:
-
- length = internal_object->buffer.length;
- external_object->buffer.length = internal_object->buffer.length;
- external_object->buffer.pointer = data_space;
- MEMCPY ((void *) data_space, (void *) internal_object->buffer.pointer, length);
- break;
-
-
- case ACPI_TYPE_INTEGER:
-
- external_object->integer.value= internal_object->integer.value;
- break;
-
-
- case INTERNAL_TYPE_REFERENCE:
-
- /*
- * This is an object reference. Attempt to dereference it.
- */
-
- switch (internal_object->reference.op_code)
- {
- case AML_ZERO_OP:
- external_object->type = ACPI_TYPE_INTEGER;
- external_object->integer.value = 0;
- break;
-
- case AML_ONE_OP:
- external_object->type = ACPI_TYPE_INTEGER;
- external_object->integer.value = 1;
- break;
-
- case AML_ONES_OP:
- external_object->type = ACPI_TYPE_INTEGER;
- external_object->integer.value = ACPI_INTEGER_MAX;
- break;
-
- case AML_NAMEPATH_OP:
- /*
- * This is a named reference, get the string. We already know that
- * we have room for it, use max length
- */
- length = MAX_STRING_LENGTH;
- external_object->type = ACPI_TYPE_STRING;
- external_object->string.pointer = (NATIVE_CHAR *) data_space;
- status = acpi_ns_handle_to_pathname ((ACPI_HANDLE *) internal_object->reference.node,
- &length, (char *) data_space);
- break;
-
- 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 (AE_SUPPORT);
- break;
- }
-
-
- *buffer_space_used = (u32) ROUND_UP_TO_NATIVE_WORD (length);
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_copy_ielement_to_eelement
- *
- * PARAMETERS: ACPI_PKG_CALLBACK
- *
- * RETURN: Status
- *
- * DESCRIPTION: Copy one package element to another package element
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_cm_copy_ielement_to_eelement (
- u8 object_type,
- ACPI_OPERAND_OBJECT *source_object,
- ACPI_GENERIC_STATE *state,
- void *context)
-{
- ACPI_STATUS status = AE_OK;
- ACPI_PKG_INFO *info = (ACPI_PKG_INFO *) context;
- u32 object_space;
- u32 this_index;
- ACPI_OBJECT *target_object;
-
-
- this_index = state->pkg.index;
- target_object = (ACPI_OBJECT *)
- &((ACPI_OBJECT *)(state->pkg.dest_object))->package.elements[this_index];
-
-
- switch (object_type)
- {
- case 0:
-
- /*
- * This is a simple or null object -- get the size
- */
-
- status = acpi_cm_copy_isimple_to_esimple (source_object,
- target_object, info->free_space, &object_space);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
- break;
-
- case 1:
-
- /*
- * Build the package object
- */
- target_object->type = ACPI_TYPE_PACKAGE;
- target_object->package.count = source_object->package.count;
- target_object->package.elements = (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 = (u32) ROUND_UP_TO_NATIVE_WORD (
- target_object->package.count * sizeof (ACPI_OBJECT));
- break;
-
- default:
- return (AE_BAD_PARAMETER);
- }
-
-
- info->free_space += object_space;
- info->length += object_space;
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_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_cm_get_object_size function before calling this function.
- *
- ******************************************************************************/
-
-static ACPI_STATUS
-acpi_cm_copy_ipackage_to_epackage (
- ACPI_OPERAND_OBJECT *internal_object,
- u8 *buffer,
- u32 *space_used)
-{
- ACPI_OBJECT *external_object;
- ACPI_STATUS status;
- ACPI_PKG_INFO info;
-
-
- /*
- * First package at head of the buffer
- */
- external_object = (ACPI_OBJECT *) buffer;
-
- /*
- * Free space begins right after the first package
- */
- info.length = 0;
- info.object_space = 0;
- info.num_packages = 1;
- info.free_space = buffer + ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
-
-
- external_object->type = internal_object->common.type;
- external_object->package.count = internal_object->package.count;
- external_object->package.elements = (ACPI_OBJECT *) info.free_space;
-
-
- /*
- * Build an array of ACPI_OBJECTS in the buffer
- * and move the free space past it
- */
-
- info.free_space += external_object->package.count *
- ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
-
-
- status = acpi_cm_walk_package_tree (internal_object, external_object,
- acpi_cm_copy_ielement_to_eelement, &info);
-
- *space_used = info.length;
-
- return (status);
-
-}
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_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_cm_copy_iobject_to_eobject (
- ACPI_OPERAND_OBJECT *internal_object,
- ACPI_BUFFER *ret_buffer)
-{
- ACPI_STATUS status;
-
-
- if (IS_THIS_OBJECT_TYPE (internal_object, ACPI_TYPE_PACKAGE)) {
- /*
- * Package object: Copy all subobjects (including
- * nested packages)
- */
- status = acpi_cm_copy_ipackage_to_epackage (internal_object,
- ret_buffer->pointer, &ret_buffer->length);
- }
-
- else {
- /*
- * Build a simple object (no nested objects)
- */
- status = acpi_cm_copy_isimple_to_esimple (internal_object,
- (ACPI_OBJECT *) ret_buffer->pointer,
- ((u8 *) ret_buffer->pointer +
- ROUND_UP_TO_NATIVE_WORD (sizeof (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 (ACPI_OBJECT);
- }
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_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_cm_copy_esimple_to_isimple (
- ACPI_OBJECT *external_object,
- ACPI_OPERAND_OBJECT *internal_object)
-{
-
-
- internal_object->common.type = (u8) external_object->type;
-
- switch (external_object->type)
- {
-
- case ACPI_TYPE_STRING:
-
- internal_object->string.length = external_object->string.length;
- internal_object->string.pointer = external_object->string.pointer;
- break;
-
-
- case ACPI_TYPE_BUFFER:
-
- internal_object->buffer.length = external_object->buffer.length;
- internal_object->buffer.pointer = external_object->buffer.pointer;
- break;
-
-
- case ACPI_TYPE_INTEGER:
- /*
- * Number is included in the object itself
- */
- internal_object->integer.value = external_object->integer.value;
- break;
-
-
- default:
- return (AE_CTRL_RETURN_VALUE);
- break;
- }
-
-
- return (AE_OK);
-}
-
-
-#ifdef ACPI_FUTURE_IMPLEMENTATION
-
-/* Code to convert packages that are parameters to control methods */
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_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 - the status of the call
- *
- * 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_cm_get_object_size function before calling this function.
- *
- ******************************************************************************/
-
-static ACPI_STATUS
-acpi_cm_copy_epackage_to_ipackage (
- ACPI_OPERAND_OBJECT *internal_object,
- u8 *buffer,
- u32 *space_used)
-{
- u8 *free_space;
- ACPI_OBJECT *external_object;
- u32 length = 0;
- u32 this_index;
- u32 object_space = 0;
- ACPI_OPERAND_OBJECT *this_internal_obj;
- ACPI_OBJECT *this_external_obj;
-
-
- /*
- * First package at head of the buffer
- */
- external_object = (ACPI_OBJECT *)buffer;
-
- /*
- * Free space begins right after the first package
- */
- free_space = buffer + sizeof(ACPI_OBJECT);
-
-
- external_object->type = internal_object->common.type;
- external_object->package.count = internal_object->package.count;
- external_object->package.elements = (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(ACPI_OBJECT);
-
-
- /* Call Walk_package */
-
-}
-
-#endif /* Future implementation */
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_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_cm_copy_eobject_to_iobject (
- ACPI_OBJECT *external_object,
- ACPI_OPERAND_OBJECT *internal_object)
-{
- ACPI_STATUS status;
-
-
- if (external_object->type == ACPI_TYPE_PACKAGE) {
- /*
- * Package objects contain other objects (which can be objects)
- * buildpackage does it all
- *
- * TBD: Package conversion must be completed and tested
- * NOTE: this code converts packages as input parameters to
- * control methods only. This is a very, very rare case.
- */
-/*
- Status = Acpi_cm_copy_epackage_to_ipackage(Internal_object,
- Ret_buffer->Pointer,
- &Ret_buffer->Length);
-*/
- return (AE_NOT_IMPLEMENTED);
- }
-
- else {
- /*
- * Build a simple object (no nested objects)
- */
- status = acpi_cm_copy_esimple_to_isimple (external_object, internal_object);
- /*
- * build simple does not include the object size in the length
- * so we add it in here
- */
- }
-
- return (status);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_copy_ielement_to_ielement
- *
- * PARAMETERS: ACPI_PKG_CALLBACK
- *
- * RETURN: Status - the status of the call
- *
- * DESCRIPTION: Copy one package element to another package element
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_cm_copy_ielement_to_ielement (
- u8 object_type,
- ACPI_OPERAND_OBJECT *source_object,
- ACPI_GENERIC_STATE *state,
- void *context)
-{
- ACPI_STATUS status = AE_OK;
- u32 this_index;
- ACPI_OPERAND_OBJECT **this_target_ptr;
- ACPI_OPERAND_OBJECT *target_object;
-
-
- this_index = state->pkg.index;
- this_target_ptr = (ACPI_OPERAND_OBJECT **)
- &state->pkg.dest_object->package.elements[this_index];
-
- switch (object_type)
- {
- case 0:
-
- /*
- * This is a simple object, just copy it
- */
- target_object = acpi_cm_create_internal_object (source_object->common.type);
- if (!target_object) {
- return (AE_NO_MEMORY);
- }
-
- status = acpi_aml_store_object_to_object (source_object, target_object,
- (ACPI_WALK_STATE *) context);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
- *this_target_ptr = target_object;
- break;
-
-
- case 1:
- /*
- * This object is a package - go down another nesting level
- * Create and build the package object
- */
- target_object = acpi_cm_create_internal_object (ACPI_TYPE_PACKAGE);
- if (!target_object) {
- /* TBD: must delete package created up to this point */
-
- return (AE_NO_MEMORY);
- }
-
- target_object->package.count = source_object->package.count;
-
- /*
- * 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);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_cm_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_cm_copy_ipackage_to_ipackage (
- ACPI_OPERAND_OBJECT *source_obj,
- ACPI_OPERAND_OBJECT *dest_obj,
- ACPI_WALK_STATE *walk_state)
-{
- ACPI_STATUS status = AE_OK;
-
-
- dest_obj->common.type = source_obj->common.type;
- dest_obj->package.count = source_obj->package.count;
-
-
- /*
- * Create the object array and walk the source package tree
- */
-
- dest_obj->package.elements = acpi_cm_callocate ((source_obj->package.count + 1) *
- sizeof (void *));
- dest_obj->package.next_element = dest_obj->package.elements;
-
- if (!dest_obj->package.elements) {
- REPORT_ERROR (
- ("Aml_build_copy_internal_package_object: Package allocation failure\n"));
- return (AE_NO_MEMORY);
- }
-
-
- status = acpi_cm_walk_package_tree (source_obj, dest_obj,
- acpi_cm_copy_ielement_to_ielement, walk_state);
-
- return (status);
-}
-
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