*****************************************************************************/
/*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/amlcode.h>
#include <acpi/acdispat.h>
#include <acpi/acnamesp.h>
#include <acpi/acparser.h>
-
#define _COMPONENT ACPI_EXECUTER
- ACPI_MODULE_NAME ("exresolv")
+ACPI_MODULE_NAME("exresolv")
+/* Local prototypes */
+static acpi_status
+acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
+ struct acpi_walk_state *walk_state);
/*******************************************************************************
*
******************************************************************************/
acpi_status
-acpi_ex_resolve_to_value (
- union acpi_operand_object **stack_ptr,
- struct acpi_walk_state *walk_state)
+acpi_ex_resolve_to_value(union acpi_operand_object **stack_ptr,
+ struct acpi_walk_state *walk_state)
{
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE_PTR ("ex_resolve_to_value", stack_ptr);
+ acpi_status status;
+ ACPI_FUNCTION_TRACE_PTR("ex_resolve_to_value", stack_ptr);
if (!stack_ptr || !*stack_ptr) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Internal - null pointer\n"));
- return_ACPI_STATUS (AE_AML_NO_OPERAND);
+ ACPI_ERROR((AE_INFO, "Internal - null pointer"));
+ return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
/*
* 1) A valid union acpi_operand_object, or
* 2) A struct acpi_namespace_node (named_obj)
*/
- if (ACPI_GET_DESCRIPTOR_TYPE (*stack_ptr) == ACPI_DESC_TYPE_OPERAND) {
- status = acpi_ex_resolve_object_to_value (stack_ptr, walk_state);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ if (ACPI_GET_DESCRIPTOR_TYPE(*stack_ptr) == ACPI_DESC_TYPE_OPERAND) {
+ status = acpi_ex_resolve_object_to_value(stack_ptr, walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ if (!*stack_ptr) {
+ ACPI_ERROR((AE_INFO, "Internal - null pointer"));
+ return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
}
* Object on the stack may have changed if acpi_ex_resolve_object_to_value()
* was called (i.e., we can't use an _else_ here.)
*/
- if (ACPI_GET_DESCRIPTOR_TYPE (*stack_ptr) == ACPI_DESC_TYPE_NAMED) {
- status = acpi_ex_resolve_node_to_value (
- ACPI_CAST_INDIRECT_PTR (struct acpi_namespace_node, stack_ptr),
- walk_state);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ if (ACPI_GET_DESCRIPTOR_TYPE(*stack_ptr) == ACPI_DESC_TYPE_NAMED) {
+ status =
+ acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
+ (struct acpi_namespace_node,
+ stack_ptr), walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
}
- ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Resolved object %p\n", *stack_ptr));
- return_ACPI_STATUS (AE_OK);
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Resolved object %p\n", *stack_ptr));
+ return_ACPI_STATUS(AE_OK);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_resolve_object_to_value
*
- * PARAMETERS: stack_ptr - Pointer to a stack location that contains a
- * ptr to an internal object.
+ * PARAMETERS: stack_ptr - Pointer to an internal object
* walk_state - Current method state
*
* RETURN: Status
*
- * DESCRIPTION: Retrieve the value from an internal object. The Reference type
+ * DESCRIPTION: Retrieve the value from an internal object. The Reference type
* uses the associated AML opcode to determine the value.
*
******************************************************************************/
-acpi_status
-acpi_ex_resolve_object_to_value (
- union acpi_operand_object **stack_ptr,
- struct acpi_walk_state *walk_state)
+static acpi_status
+acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
+ struct acpi_walk_state *walk_state)
{
- acpi_status status = AE_OK;
- union acpi_operand_object *stack_desc;
- void *temp_node;
- union acpi_operand_object *obj_desc;
- u16 opcode;
-
-
- ACPI_FUNCTION_TRACE ("ex_resolve_object_to_value");
+ acpi_status status = AE_OK;
+ union acpi_operand_object *stack_desc;
+ void *temp_node;
+ union acpi_operand_object *obj_desc;
+ u16 opcode;
+ ACPI_FUNCTION_TRACE("ex_resolve_object_to_value");
stack_desc = *stack_ptr;
/* This is an union acpi_operand_object */
- switch (ACPI_GET_OBJECT_TYPE (stack_desc)) {
+ switch (ACPI_GET_OBJECT_TYPE(stack_desc)) {
case ACPI_TYPE_LOCAL_REFERENCE:
opcode = stack_desc->reference.opcode;
case AML_NAME_OP:
/*
- * Convert indirect name ptr to a direct name ptr.
+ * Convert name reference to a namespace node
* Then, acpi_ex_resolve_node_to_value can be used to get the value
*/
temp_node = stack_desc->reference.object;
/* Delete the Reference Object */
- acpi_ut_remove_reference (stack_desc);
+ acpi_ut_remove_reference(stack_desc);
- /* Put direct name pointer onto stack and exit */
+ /* Return the namespace node */
(*stack_ptr) = temp_node;
break;
-
case AML_LOCAL_OP:
case AML_ARG_OP:
* Get the local from the method's state info
* Note: this increments the local's object reference count
*/
- status = acpi_ds_method_data_get_value (opcode,
- stack_desc->reference.offset, walk_state, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ds_method_data_get_value(opcode,
+ stack_desc->
+ reference.offset,
+ walk_state,
+ &obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Arg/Local %X] value_obj is %p\n",
- stack_desc->reference.offset, obj_desc));
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "[Arg/Local %X] value_obj is %p\n",
+ stack_desc->reference.offset,
+ obj_desc));
/*
* Now we can delete the original Reference Object and
* replace it with the resolved value
*/
- acpi_ut_remove_reference (stack_desc);
+ acpi_ut_remove_reference(stack_desc);
*stack_ptr = obj_desc;
break;
-
case AML_INDEX_OP:
switch (stack_desc->reference.target_type) {
/* Just return - leave the Reference on the stack */
break;
-
case ACPI_TYPE_PACKAGE:
obj_desc = *stack_desc->reference.where;
* (i.e., dereference the package index)
* Delete the ref object, increment the returned object
*/
- acpi_ut_remove_reference (stack_desc);
- acpi_ut_add_reference (obj_desc);
+ acpi_ut_remove_reference(stack_desc);
+ acpi_ut_add_reference(obj_desc);
*stack_ptr = obj_desc;
- }
- else {
+ } else {
/*
* A NULL object descriptor means an unitialized element of
* the package, can't dereference it
*/
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Attempt to deref an Index to NULL pkg element Idx=%p\n",
- stack_desc));
+ ACPI_ERROR((AE_INFO,
+ "Attempt to deref an Index to NULL pkg element Idx=%p",
+ stack_desc));
status = AE_AML_UNINITIALIZED_ELEMENT;
}
break;
-
default:
/* Invalid reference object */
- ACPI_REPORT_ERROR ((
- "During resolve, Unknown target_type %X in Index/Reference obj %p\n",
- stack_desc->reference.target_type, stack_desc));
+ ACPI_ERROR((AE_INFO,
+ "Unknown target_type %X in Index/Reference obj %p",
+ stack_desc->reference.target_type,
+ stack_desc));
status = AE_AML_INTERNAL;
break;
}
break;
-
case AML_REF_OF_OP:
case AML_DEBUG_OP:
case AML_LOAD_OP:
break;
+ case AML_INT_NAMEPATH_OP: /* Reference to a named object */
+
+ /* Get the object pointed to by the namespace node */
+
+ *stack_ptr = (stack_desc->reference.node)->object;
+ acpi_ut_add_reference(*stack_ptr);
+ acpi_ut_remove_reference(stack_desc);
+ break;
default:
- ACPI_REPORT_ERROR (("During resolve, Unknown Reference opcode %X (%s) in %p\n",
- opcode, acpi_ps_get_opcode_name (opcode), stack_desc));
+ ACPI_ERROR((AE_INFO,
+ "Unknown Reference opcode %X (%s) in %p",
+ opcode, acpi_ps_get_opcode_name(opcode),
+ stack_desc));
status = AE_AML_INTERNAL;
break;
}
break;
-
case ACPI_TYPE_BUFFER:
- status = acpi_ds_get_buffer_arguments (stack_desc);
+ status = acpi_ds_get_buffer_arguments(stack_desc);
break;
-
case ACPI_TYPE_PACKAGE:
- status = acpi_ds_get_package_arguments (stack_desc);
+ status = acpi_ds_get_package_arguments(stack_desc);
break;
+ /* These cases may never happen here, but just in case.. */
- /*
- * These cases may never happen here, but just in case..
- */
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
- ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "field_read source_desc=%p Type=%X\n",
- stack_desc, ACPI_GET_OBJECT_TYPE (stack_desc)));
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+ "field_read source_desc=%p Type=%X\n",
+ stack_desc,
+ ACPI_GET_OBJECT_TYPE(stack_desc)));
- status = acpi_ex_read_data_from_field (walk_state, stack_desc, &obj_desc);
- *stack_ptr = (void *) obj_desc;
+ status =
+ acpi_ex_read_data_from_field(walk_state, stack_desc,
+ &obj_desc);
+ *stack_ptr = (void *)obj_desc;
break;
default:
break;
}
- return_ACPI_STATUS (status);
+ return_ACPI_STATUS(status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ex_resolve_multiple
******************************************************************************/
acpi_status
-acpi_ex_resolve_multiple (
- struct acpi_walk_state *walk_state,
- union acpi_operand_object *operand,
- acpi_object_type *return_type,
- union acpi_operand_object **return_desc)
+acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
+ union acpi_operand_object *operand,
+ acpi_object_type * return_type,
+ union acpi_operand_object **return_desc)
{
- union acpi_operand_object *obj_desc = (void *) operand;
- struct acpi_namespace_node *node;
- acpi_object_type type;
- acpi_status status;
+ union acpi_operand_object *obj_desc = (void *)operand;
+ struct acpi_namespace_node *node;
+ acpi_object_type type;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE("acpi_ex_resolve_multiple");
- ACPI_FUNCTION_TRACE ("acpi_ex_resolve_multiple");
+ /* Operand can be either a namespace node or an operand descriptor */
-
- /*
- * Operand can be either a namespace node or an operand descriptor
- */
- switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) {
+ switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
case ACPI_DESC_TYPE_OPERAND:
type = obj_desc->common.type;
break;
case ACPI_DESC_TYPE_NAMED:
- type = ((struct acpi_namespace_node *) obj_desc)->type;
- obj_desc = acpi_ns_get_attached_object ((struct acpi_namespace_node *) obj_desc);
+ type = ((struct acpi_namespace_node *)obj_desc)->type;
+ obj_desc =
+ acpi_ns_get_attached_object((struct acpi_namespace_node *)
+ obj_desc);
/* If we had an Alias node, use the attached object for type info */
if (type == ACPI_TYPE_LOCAL_ALIAS) {
- type = ((struct acpi_namespace_node *) obj_desc)->type;
- obj_desc = acpi_ns_get_attached_object ((struct acpi_namespace_node *) obj_desc);
+ type = ((struct acpi_namespace_node *)obj_desc)->type;
+ obj_desc =
+ acpi_ns_get_attached_object((struct
+ acpi_namespace_node *)
+ obj_desc);
}
break;
default:
- return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+ return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
+ /* If type is anything other than a reference, we are done */
- /*
- * If type is anything other than a reference, we are done
- */
if (type != ACPI_TYPE_LOCAL_REFERENCE) {
goto exit;
}
* of the object_type and size_of operators). This means traversing
* the list of possibly many nested references.
*/
- while (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) {
+ while (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) {
switch (obj_desc->reference.opcode) {
case AML_REF_OF_OP:
/* All "References" point to a NS node */
- if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) {
- ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n",
- node, acpi_ut_get_descriptor_name (node)));
- return_ACPI_STATUS (AE_AML_INTERNAL);
+ if (ACPI_GET_DESCRIPTOR_TYPE(node) !=
+ ACPI_DESC_TYPE_NAMED) {
+ ACPI_ERROR((AE_INFO, "Not a NS node %p [%s]",
+ node,
+ acpi_ut_get_descriptor_name(node)));
+ return_ACPI_STATUS(AE_AML_INTERNAL);
}
/* Get the attached object */
- obj_desc = acpi_ns_get_attached_object (node);
+ obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
/* No object, use the NS node type */
- type = acpi_ns_get_type (node);
+ type = acpi_ns_get_type(node);
goto exit;
}
/* Check for circular references */
if (obj_desc == operand) {
- return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE);
+ return_ACPI_STATUS(AE_AML_CIRCULAR_REFERENCE);
}
break;
-
case AML_INDEX_OP:
/* Get the type of this reference (index into another object) */
if (!obj_desc) {
/* NULL package elements are allowed */
- type = 0; /* Uninitialized */
+ type = 0; /* Uninitialized */
goto exit;
}
break;
-
case AML_INT_NAMEPATH_OP:
/* Dereference the reference pointer */
/* All "References" point to a NS node */
- if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) {
- ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n",
- node, acpi_ut_get_descriptor_name (node)));
- return_ACPI_STATUS (AE_AML_INTERNAL);
+ if (ACPI_GET_DESCRIPTOR_TYPE(node) !=
+ ACPI_DESC_TYPE_NAMED) {
+ ACPI_ERROR((AE_INFO, "Not a NS node %p [%s]",
+ node,
+ acpi_ut_get_descriptor_name(node)));
+ return_ACPI_STATUS(AE_AML_INTERNAL);
}
/* Get the attached object */
- obj_desc = acpi_ns_get_attached_object (node);
+ obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
/* No object, use the NS node type */
- type = acpi_ns_get_type (node);
+ type = acpi_ns_get_type(node);
goto exit;
}
/* Check for circular references */
if (obj_desc == operand) {
- return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE);
+ return_ACPI_STATUS(AE_AML_CIRCULAR_REFERENCE);
}
break;
-
case AML_LOCAL_OP:
case AML_ARG_OP:
if (return_desc) {
- status = acpi_ds_method_data_get_value (obj_desc->reference.opcode,
- obj_desc->reference.offset, walk_state, &obj_desc);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status =
+ acpi_ds_method_data_get_value(obj_desc->
+ reference.
+ opcode,
+ obj_desc->
+ reference.
+ offset,
+ walk_state,
+ &obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- acpi_ut_remove_reference (obj_desc);
- }
- else {
- status = acpi_ds_method_data_get_node (obj_desc->reference.opcode,
- obj_desc->reference.offset, walk_state, &node);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ acpi_ut_remove_reference(obj_desc);
+ } else {
+ status =
+ acpi_ds_method_data_get_node(obj_desc->
+ reference.
+ opcode,
+ obj_desc->
+ reference.
+ offset,
+ walk_state,
+ &node);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
- obj_desc = acpi_ns_get_attached_object (node);
+ obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
type = ACPI_TYPE_ANY;
goto exit;
}
break;
-
case AML_DEBUG_OP:
/* The Debug Object is of type "debug_object" */
type = ACPI_TYPE_DEBUG_OBJECT;
goto exit;
-
default:
- ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Unknown Reference subtype %X\n",
- obj_desc->reference.opcode));
- return_ACPI_STATUS (AE_AML_INTERNAL);
+ ACPI_ERROR((AE_INFO,
+ "Unknown Reference subtype %X",
+ obj_desc->reference.opcode));
+ return_ACPI_STATUS(AE_AML_INTERNAL);
}
}
* Now we are guaranteed to have an object that has not been created
* via the ref_of or Index operators.
*/
- type = ACPI_GET_OBJECT_TYPE (obj_desc);
-
+ type = ACPI_GET_OBJECT_TYPE(obj_desc);
-exit:
+ exit:
/* Convert internal types to external types */
switch (type) {
if (return_desc) {
*return_desc = obj_desc;
}
- return_ACPI_STATUS (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
-
-
git://git.onelab.eu / linux-2.6.git / blobdiff