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path: root/drivers/acpi/executer/excreate.c
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Diffstat (limited to 'drivers/acpi/executer/excreate.c')
-rw-r--r--drivers/acpi/executer/excreate.c117
1 files changed, 16 insertions, 101 deletions
diff --git a/drivers/acpi/executer/excreate.c b/drivers/acpi/executer/excreate.c
index 6e9a23e47fe..60e62c4f057 100644
--- a/drivers/acpi/executer/excreate.c
+++ b/drivers/acpi/executer/excreate.c
@@ -5,7 +5,7 @@
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -96,6 +96,9 @@ acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
* to the original Node.
*/
switch (target_node->type) {
+
+ /* For these types, the sub-object can change dynamically via a Store */
+
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
@@ -103,9 +106,18 @@ acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
case ACPI_TYPE_BUFFER_FIELD:
/*
+ * These types open a new scope, so we need the NS node in order to access
+ * any children.
+ */
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_POWER:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_THERMAL:
+ case ACPI_TYPE_LOCAL_SCOPE:
+
+ /*
* The new alias has the type ALIAS and points to the original
- * NS node, not the object itself. This is because for these
- * types, the object can change dynamically via a Store.
+ * NS node, not the object itself.
*/
alias_node->type = ACPI_TYPE_LOCAL_ALIAS;
alias_node->object =
@@ -115,9 +127,7 @@ acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
case ACPI_TYPE_METHOD:
/*
- * The new alias has the type ALIAS and points to the original
- * NS node, not the object itself. This is because for these
- * types, the object can change dynamically via a Store.
+ * Control method aliases need to be differentiated
*/
alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
alias_node->object =
@@ -342,101 +352,6 @@ acpi_ex_create_region(u8 * aml_start,
/*******************************************************************************
*
- * FUNCTION: acpi_ex_create_table_region
- *
- * PARAMETERS: walk_state - Current state
- *
- * RETURN: Status
- *
- * DESCRIPTION: Create a new data_table_region object
- *
- ******************************************************************************/
-
-acpi_status acpi_ex_create_table_region(struct acpi_walk_state *walk_state)
-{
- acpi_status status;
- union acpi_operand_object **operand = &walk_state->operands[0];
- union acpi_operand_object *obj_desc;
- struct acpi_namespace_node *node;
- union acpi_operand_object *region_obj2;
- acpi_native_uint table_index;
- struct acpi_table_header *table;
-
- ACPI_FUNCTION_TRACE(ex_create_table_region);
-
- /* Get the Node from the object stack */
-
- node = walk_state->op->common.node;
-
- /*
- * If the region object is already attached to this node,
- * just return
- */
- if (acpi_ns_get_attached_object(node)) {
- return_ACPI_STATUS(AE_OK);
- }
-
- /* Find the ACPI table */
-
- status = acpi_tb_find_table(operand[1]->string.pointer,
- operand[2]->string.pointer,
- operand[3]->string.pointer, &table_index);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Create the region descriptor */
-
- obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
- if (!obj_desc) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- region_obj2 = obj_desc->common.next_object;
- region_obj2->extra.region_context = NULL;
-
- status = acpi_get_table_by_index(table_index, &table);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Init the region from the operands */
-
- obj_desc->region.space_id = REGION_DATA_TABLE;
- obj_desc->region.address =
- (acpi_physical_address) ACPI_TO_INTEGER(table);
- obj_desc->region.length = table->length;
- obj_desc->region.node = node;
- obj_desc->region.flags = AOPOBJ_DATA_VALID;
-
- /* Install the new region object in the parent Node */
-
- status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- status = acpi_ev_initialize_region(obj_desc, FALSE);
- if (ACPI_FAILURE(status)) {
- if (status == AE_NOT_EXIST) {
- status = AE_OK;
- } else {
- goto cleanup;
- }
- }
-
- obj_desc->region.flags |= AOPOBJ_SETUP_COMPLETE;
-
- cleanup:
-
- /* Remove local reference to the object */
-
- acpi_ut_remove_reference(obj_desc);
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
* FUNCTION: acpi_ex_create_processor
*
* PARAMETERS: walk_state - Current state