acpi_status
acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
union acpi_parse_object ** out_op)
{
union acpi_parse_object *op;
struct acpi_namespace_node *node;
acpi_status status;
acpi_object_type object_type;
char *path;
u32 flags;
ACPI_FUNCTION_TRACE(ds_load1_begin_op);
op = walk_state->op;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
walk_state));
/* We are only interested in opcodes that have an associated name */
if (op) {
if (!(walk_state->op_info->flags & AML_NAMED)) {
*out_op = op;
return_ACPI_STATUS(AE_OK);
}
/* Check if this object has already been installed in the namespace */
if (op->common.node) {
*out_op = op;
return_ACPI_STATUS(AE_OK);
}
}
path = acpi_ps_get_next_namestring(&walk_state->parser_state);
/* Map the raw opcode into an internal object type */
object_type = walk_state->op_info->object_type;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"State=%p Op=%p [%s]\n", walk_state, op,
acpi_ut_get_type_name(object_type)));
switch (walk_state->opcode) {
case AML_SCOPE_OP:
/*
* The target name of the Scope() operator must exist at this point so
* that we can actually open the scope to enter new names underneath it.
* Allow search-to-root for single namesegs.
*/
status =
acpi_ns_lookup(walk_state->scope_info, path, object_type,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
walk_state, &(node));
#ifdef ACPI_ASL_COMPILER
if (status == AE_NOT_FOUND) {
/*
* Table disassembly:
* Target of Scope() not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0);
status =
acpi_ns_lookup(walk_state->scope_info, path,
object_type, ACPI_IMODE_LOAD_PASS1,
ACPI_NS_SEARCH_PARENT, walk_state,
&node);
}
#endif
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(path, status);
return_ACPI_STATUS(status);
}
/*
* Check to make sure that the target is
* one of the opcodes that actually opens a scope
*/
switch (node->type) {
case ACPI_TYPE_ANY:
case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* These are acceptable types */
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type. This
* enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*
* Note: silently change the type here. On the second pass, we will report
* a warning
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
path,
acpi_ut_get_type_name(node->type)));
node->type = ACPI_TYPE_ANY;
walk_state->scope_info->common.value = ACPI_TYPE_ANY;
break;
default:
/* All other types are an error */
ACPI_ERROR((AE_INFO,
"Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)",
acpi_ut_get_type_name(node->type), path));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
break;
default:
/*
* For all other named opcodes, we will enter the name into
* the namespace.
*
* Setup the search flags.
* Since we are entering a name into the namespace, we do not want to
* enable the search-to-root upsearch.
*
* There are only two conditions where it is acceptable that the name
* already exists:
* 1) the Scope() operator can reopen a scoping object that was
* previously defined (Scope, Method, Device, etc.)
* 2) Whenever we are parsing a deferred opcode (op_region, Buffer,
* buffer_field, or Package), the name of the object is already
* in the namespace.
*/
if (walk_state->deferred_node) {
/* This name is already in the namespace, get the node */
node = walk_state->deferred_node;
status = AE_OK;
break;
}
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (walk_state->method_node) {
node = NULL;
status = AE_OK;
break;
}
flags = ACPI_NS_NO_UPSEARCH;
if ((walk_state->opcode != AML_SCOPE_OP) &&
(!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) {
flags |= ACPI_NS_ERROR_IF_FOUND;
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"[%s] Cannot already exist\n",
acpi_ut_get_type_name(object_type)));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"[%s] Both Find or Create allowed\n",
acpi_ut_get_type_name(object_type)));
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*/
status =
acpi_ns_lookup(walk_state->scope_info, path, object_type,
ACPI_IMODE_LOAD_PASS1, flags, walk_state,
&node);
if (ACPI_FAILURE(status)) {
if (status == AE_ALREADY_EXISTS) {
/* The name already exists in this scope */
if (node->flags & ANOBJ_IS_EXTERNAL) {
/*
* Allow one create on an object or segment that was
* previously declared External
*/
node->flags &= ~ANOBJ_IS_EXTERNAL;
node->type = (u8) object_type;
/* Just retyped a node, probably will need to open a scope */
if (acpi_ns_opens_scope(object_type)) {
status =
acpi_ds_scope_stack_push
(node, object_type,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS
(status);
}
}
status = AE_OK;
}
}
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(path, status);
return_ACPI_STATUS(status);
}
}
break;
}
/* Common exit */
if (!op) {
/* Create a new op */
op = acpi_ps_alloc_op(walk_state->opcode);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
}
/* Initialize the op */
#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY))
op->named.path = ACPI_CAST_PTR(u8, path);
#endif
if (node) {
/*
* Put the Node in the "op" object that the parser uses, so we
* can get it again quickly when this scope is closed
*/
op->common.node = node;
op->named.name = node->name.integer;
}
acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state),
op);
*out_op = op;
return_ACPI_STATUS(status);
}
acpi_status
acpi_ds_init_aml_walk(struct acpi_walk_state *walk_state,
union acpi_parse_object *op,
struct acpi_namespace_node *method_node,
u8 * aml_start,
u32 aml_length,
struct acpi_evaluate_info *info, u8 pass_number)
{
acpi_status status;
struct acpi_parse_state *parser_state = &walk_state->parser_state;
union acpi_parse_object *extra_op;
ACPI_FUNCTION_TRACE(ds_init_aml_walk);
walk_state->parser_state.aml =
walk_state->parser_state.aml_start = aml_start;
walk_state->parser_state.aml_end =
walk_state->parser_state.pkg_end = aml_start + aml_length;
/* The next_op of the next_walk will be the beginning of the method */
walk_state->next_op = NULL;
walk_state->pass_number = pass_number;
if (info) {
walk_state->params = info->parameters;
walk_state->caller_return_desc = &info->return_object;
}
status = acpi_ps_init_scope(&walk_state->parser_state, op);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
if (method_node) {
walk_state->parser_state.start_node = method_node;
walk_state->walk_type = ACPI_WALK_METHOD;
walk_state->method_node = method_node;
walk_state->method_desc =
acpi_ns_get_attached_object(method_node);
/* Push start scope on scope stack and make it current */
status =
acpi_ds_scope_stack_push(method_node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Init the method arguments */
status = acpi_ds_method_data_init_args(walk_state->params,
ACPI_METHOD_NUM_ARGS,
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} else {
/*
* Setup the current scope.
* Find a Named Op that has a namespace node associated with it.
* search upwards from this Op. Current scope is the first
* Op with a namespace node.
*/
extra_op = parser_state->start_op;
while (extra_op && !extra_op->common.node) {
extra_op = extra_op->common.parent;
}
if (!extra_op) {
parser_state->start_node = NULL;
} else {
parser_state->start_node = extra_op->common.node;
}
if (parser_state->start_node) {
/* Push start scope on scope stack and make it current */
status =
acpi_ds_scope_stack_push(parser_state->start_node,
parser_state->start_node->
type, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
status = acpi_ds_init_callbacks(walk_state, pass_number);
return_ACPI_STATUS(status);
}
ACPI_STATUS
acpi_ns_lookup (
ACPI_GENERIC_STATE *scope_info,
NATIVE_CHAR *pathname,
OBJECT_TYPE_INTERNAL type,
OPERATING_MODE interpreter_mode,
u32 flags,
ACPI_WALK_STATE *walk_state,
ACPI_NAMESPACE_NODE **return_node)
{
ACPI_STATUS status;
ACPI_NAMESPACE_NODE *prefix_node;
ACPI_NAMESPACE_NODE *current_node = NULL;
ACPI_NAMESPACE_NODE *scope_to_push = NULL;
ACPI_NAMESPACE_NODE *this_node = NULL;
u32 num_segments;
ACPI_NAME simple_name;
u8 null_name_path = FALSE;
OBJECT_TYPE_INTERNAL type_to_check_for;
OBJECT_TYPE_INTERNAL this_search_type;
DEBUG_ONLY_MEMBERS (u32 i)
if (!return_node) {
return (AE_BAD_PARAMETER);
}
acpi_gbl_ns_lookup_count++;
*return_node = ENTRY_NOT_FOUND;
if (!acpi_gbl_root_node) {
return (AE_NO_NAMESPACE);
}
/*
* Get the prefix scope.
* A null scope means use the root scope
*/
if ((!scope_info) ||
(!scope_info->scope.node))
{
prefix_node = acpi_gbl_root_node;
}
else {
prefix_node = scope_info->scope.node;
}
/*
* This check is explicitly split provide relax the Type_to_check_for
* conditions for Bank_field_defn. Originally, both Bank_field_defn and
* Def_field_defn caused Type_to_check_for to be set to ACPI_TYPE_REGION,
* but the Bank_field_defn may also check for a Field definition as well
* as an Operation_region.
*/
if (INTERNAL_TYPE_DEF_FIELD_DEFN == type) {
/* Def_field_defn defines fields in a Region */
type_to_check_for = ACPI_TYPE_REGION;
}
else if (INTERNAL_TYPE_BANK_FIELD_DEFN == type) {
/* Bank_field_defn defines data fields in a Field Object */
type_to_check_for = ACPI_TYPE_ANY;
}
else {
type_to_check_for = type;
}
/* TBD: [Restructure] - Move the pathname stuff into a new procedure */
/* Examine the name pointer */
if (!pathname) {
/* 8-12-98 ASL Grammar Update supports null Name_path */
null_name_path = TRUE;
num_segments = 0;
this_node = acpi_gbl_root_node;
}
else {
/*
* Valid name pointer (Internal name format)
*
* Check for prefixes. As represented in the AML stream, a
* Pathname consists of an optional scope prefix followed by
* a segment part.
*
* If present, the scope prefix is either a Root_prefix (in
* which case the name is fully qualified), or zero or more
* Parent_prefixes (in which case the name's scope is relative
* to the current scope).
*
* The segment part consists of either:
* - A single 4-byte name segment, or
* - A Dual_name_prefix followed by two 4-byte name segments, or
* - A Multi_name_prefix_op, followed by a byte indicating the
* number of segments and the segments themselves.
*/
if (*pathname == AML_ROOT_PREFIX) {
/* Pathname is fully qualified, look in root name table */
current_node = acpi_gbl_root_node;
/* point to segment part */
pathname++;
/* Direct reference to root, "\" */
if (!(*pathname)) {
this_node = acpi_gbl_root_node;
goto check_for_new_scope_and_exit;
}
}
else {
/* Pathname is relative to current scope, start there */
current_node = prefix_node;
/*
* Handle up-prefix (carat). More than one prefix
* is supported
*/
while (*pathname == AML_PARENT_PREFIX) {
/* Point to segment part or next Parent_prefix */
pathname++;
/* Backup to the parent's scope */
this_node = acpi_ns_get_parent_object (current_node);
if (!this_node) {
/* Current scope has no parent scope */
REPORT_ERROR (("Too many parent prefixes (^) - reached root\n"));
return (AE_NOT_FOUND);
}
current_node = this_node;
}
}
/*
* Examine the name prefix opcode, if any,
* to determine the number of segments
*/
if (*pathname == AML_DUAL_NAME_PREFIX) {
num_segments = 2;
/* point to first segment */
pathname++;
}
else if (*pathname == AML_MULTI_NAME_PREFIX_OP) {
num_segments = (u32)* (u8 *) ++pathname;
/* point to first segment */
pathname++;
}
else {
/*
* No Dual or Multi prefix, hence there is only one
* segment and Pathname is already pointing to it.
*/
num_segments = 1;
}
}
/*
* Search namespace for each segment of the name.
* Loop through and verify/add each name segment.
*/
while (num_segments-- && current_node) {
/*
* Search for the current name segment under the current
* named object. The Type is significant only at the last (topmost)
* level. (We don't care about the types along the path, only
* the type of the final target object.)
*/
this_search_type = ACPI_TYPE_ANY;
if (!num_segments) {
this_search_type = type;
}
/* Pluck one ACPI name from the front of the pathname */
MOVE_UNALIGNED32_TO_32 (&simple_name, pathname);
/* Try to find the ACPI name */
status = acpi_ns_search_and_enter (simple_name, walk_state,
current_node, interpreter_mode,
this_search_type, flags,
&this_node);
if (ACPI_FAILURE (status)) {
if (status == AE_NOT_FOUND) {
/* Name not found in ACPI namespace */
}
return (status);
}
/*
* If 1) This is the last segment (Num_segments == 0)
* 2) and looking for a specific type
* (Not checking for TYPE_ANY)
* 3) Which is not an alias
* 4) which is not a local type (TYPE_DEF_ANY)
* 5) which is not a local type (TYPE_SCOPE)
* 6) which is not a local type (TYPE_INDEX_FIELD_DEFN)
* 7) and type of object is known (not TYPE_ANY)
* 8) and object does not match request
*
* Then we have a type mismatch. Just warn and ignore it.
*/
if ((num_segments == 0) &&
(type_to_check_for != ACPI_TYPE_ANY) &&
(type_to_check_for != INTERNAL_TYPE_ALIAS) &&
(type_to_check_for != INTERNAL_TYPE_DEF_ANY) &&
(type_to_check_for != INTERNAL_TYPE_SCOPE) &&
(type_to_check_for != INTERNAL_TYPE_INDEX_FIELD_DEFN) &&
(this_node->type != ACPI_TYPE_ANY) &&
(this_node->type != type_to_check_for))
{
/* Complain about a type mismatch */
REPORT_WARNING (
("Ns_lookup: %4.4s, type %X, checking for type %X\n",
&simple_name, this_node->type, type_to_check_for));
}
/*
* If this is the last name segment and we are not looking for a
* specific type, but the type of found object is known, use that type
* to see if it opens a scope.
*/
if ((0 == num_segments) && (ACPI_TYPE_ANY == type)) {
type = this_node->type;
}
if ((num_segments || acpi_ns_opens_scope (type)) &&
(this_node->child == NULL))
{
/*
* More segments or the type implies enclosed scope,
* and the next scope has not been allocated.
*/
}
current_node = this_node;
/* point to next name segment */
pathname += ACPI_NAME_SIZE;
}
/*
* Always check if we need to open a new scope
*/
check_for_new_scope_and_exit:
if (!(flags & NS_DONT_OPEN_SCOPE) && (walk_state)) {
/*
* If entry is a type which opens a scope,
* push the new scope on the scope stack.
*/
if (acpi_ns_opens_scope (type_to_check_for)) {
/* 8-12-98 ASL Grammar Update supports null Name_path */
if (null_name_path) {
/* TBD: [Investigate] - is this the correct thing to do? */
scope_to_push = NULL;
}
else {
scope_to_push = this_node;
}
status = acpi_ds_scope_stack_push (scope_to_push, type,
walk_state);
if (ACPI_FAILURE (status)) {
return (status);
}
}
}
*return_node = this_node;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: ns_one_complete_parse
*
* PARAMETERS: pass_number - 1 or 2
* table_desc - The table to be parsed.
*
* RETURN: Status
*
* DESCRIPTION: Perform one complete parse of an ACPI/AML table.
*
******************************************************************************/
acpi_status
acpi_ns_one_complete_parse(u32 pass_number,
u32 table_index,
struct acpi_namespace_node *start_node)
{
union acpi_parse_object *parse_root;
acpi_status status;
u32 aml_length;
u8 *aml_start;
struct acpi_walk_state *walk_state;
struct acpi_table_header *table;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(ns_one_complete_parse);
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Create and init a Root Node */
parse_root = acpi_ps_create_scope_op();
if (!parse_root) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(AE_NO_MEMORY);
}
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(status);
}
/* Table must consist of at least a complete header */
if (table->length < sizeof(struct acpi_table_header)) {
status = AE_BAD_HEADER;
} else {
aml_start = (u8 *) table + sizeof(struct acpi_table_header);
aml_length = table->length - sizeof(struct acpi_table_header);
status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
aml_start, aml_length, NULL,
(u8) pass_number);
}
/* Found OSDT table, enable the namespace override feature */
if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) &&
pass_number == ACPI_IMODE_LOAD_PASS1) {
walk_state->namespace_override = TRUE;
}
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
/* start_node is the default location to load the table */
if (start_node && start_node != acpi_gbl_root_node) {
status =
acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
}
/* Parse the AML */
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %u parse\n",
pass_number));
status = acpi_ps_parse_aml(walk_state);
cleanup:
acpi_ps_delete_parse_tree(parse_root);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ds_load2_begin_op (
acpi_walk_state *walk_state,
acpi_parse_object **out_op)
{
acpi_parse_object *op;
acpi_namespace_node *node;
acpi_status status;
acpi_object_type8 data_type;
NATIVE_CHAR *buffer_ptr;
void *original = NULL;
PROC_NAME ("Ds_load2_begin_op");
op = walk_state->op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, walk_state));
if (op) {
/* We only care about Namespace opcodes here */
if (!(walk_state->op_info->flags & AML_NSOPCODE) &&
walk_state->opcode != AML_INT_NAMEPATH_OP) {
return (AE_OK);
}
/* TBD: [Restructure] Temp! same code as in psparse */
if (!(walk_state->op_info->flags & AML_NAMED)) {
return (AE_OK);
}
/*
* Get the name we are going to enter or lookup in the namespace
*/
if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
/* For Namepath op, get the path string */
buffer_ptr = op->value.string;
if (!buffer_ptr) {
/* No name, just exit */
return (AE_OK);
}
}
else {
/* Get name from the op */
buffer_ptr = (NATIVE_CHAR *) &((acpi_parse2_object *)op)->name;
}
}
else {
buffer_ptr = acpi_ps_get_next_namestring (&walk_state->parser_state);
}
/* Map the raw opcode into an internal object type */
data_type = acpi_ds_map_named_opcode_to_data_type (walk_state->opcode);
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"State=%p Op=%p Type=%x\n", walk_state, op, data_type));
if (walk_state->opcode == AML_FIELD_OP ||
walk_state->opcode == AML_BANK_FIELD_OP ||
walk_state->opcode == AML_INDEX_FIELD_OP) {
node = NULL;
status = AE_OK;
}
else if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
/*
* The Name_path is an object reference to an existing object. Don't enter the
* name into the namespace, but look it up for use later
*/
status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, data_type,
IMODE_EXECUTE, NS_SEARCH_PARENT, walk_state, &(node));
}
else {
if (op && op->node) {
original = op->node;
node = op->node;
if (acpi_ns_opens_scope (data_type)) {
status = acpi_ds_scope_stack_push (node, data_type, walk_state);
if (ACPI_FAILURE (status)) {
return (status);
}
}
return (AE_OK);
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that involve
* arguments to the opcode must be created as we go back up the parse tree later.
*/
status = acpi_ns_lookup (walk_state->scope_info, buffer_ptr, data_type,
IMODE_EXECUTE, NS_NO_UPSEARCH, walk_state, &(node));
}
if (ACPI_SUCCESS (status)) {
if (!op) {
/* Create a new op */
op = acpi_ps_alloc_op (walk_state->opcode);
if (!op) {
return (AE_NO_MEMORY);
}
/* Initialize */
((acpi_parse2_object *)op)->name = node->name;
*out_op = op;
}
/*
* Put the Node in the "op" object that the parser uses, so we
* can get it again quickly when this scope is closed
*/
op->node = node;
if (original) {
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "old %p new %p\n", original, node));
if (original != node) {
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Lookup match error: old %p new %p\n", original, node));
}
}
}
return (status);
}
ACPI_STATUS
acpi_ds_call_control_method (
ACPI_WALK_LIST *walk_list,
ACPI_WALK_STATE *this_walk_state,
ACPI_PARSE_OBJECT *op)
{
ACPI_STATUS status;
ACPI_NAMESPACE_NODE *method_node;
ACPI_OPERAND_OBJECT *obj_desc;
ACPI_WALK_STATE *next_walk_state;
ACPI_PARSE_STATE *parser_state;
u32 i;
/*
* Get the namespace entry for the control method we are about to call
*/
method_node = this_walk_state->method_call_node;
if (!method_node) {
return (AE_NULL_ENTRY);
}
obj_desc = acpi_ns_get_attached_object (method_node);
if (!obj_desc) {
return (AE_NULL_OBJECT);
}
/* Init for new method, wait on concurrency semaphore */
status = acpi_ds_begin_method_execution (method_node, obj_desc);
if (ACPI_FAILURE (status)) {
return (status);
}
/* Create and initialize a new parser state */
parser_state = acpi_ps_create_state (obj_desc->method.pcode,
obj_desc->method.pcode_length);
if (!parser_state) {
return (AE_NO_MEMORY);
}
acpi_ps_init_scope (parser_state, NULL);
parser_state->start_node = method_node;
/* Create a new state for the preempting walk */
next_walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id,
NULL, obj_desc, walk_list);
if (!next_walk_state) {
/* TBD: delete parser state */
return (AE_NO_MEMORY);
}
next_walk_state->walk_type = WALK_METHOD;
next_walk_state->method_node = method_node;
next_walk_state->parser_state = parser_state;
next_walk_state->parse_flags = this_walk_state->parse_flags;
next_walk_state->descending_callback = this_walk_state->descending_callback;
next_walk_state->ascending_callback = this_walk_state->ascending_callback;
/* The Next_op of the Next_walk will be the beginning of the method */
/* TBD: [Restructure] -- obsolete? */
next_walk_state->next_op = NULL;
/* Open a new scope */
status = acpi_ds_scope_stack_push (method_node,
ACPI_TYPE_METHOD, next_walk_state);
if (ACPI_FAILURE (status)) {
goto cleanup;
}
/*
* Initialize the arguments for the method. The resolved
* arguments were put on the previous walk state's operand
* stack. Operands on the previous walk state stack always
* start at index 0.
*/
status = acpi_ds_method_data_init_args (&this_walk_state->operands[0],
this_walk_state->num_operands,
next_walk_state);
if (ACPI_FAILURE (status)) {
goto cleanup;
}
/* Create and init a Root Node */
op = acpi_ps_alloc_op (AML_SCOPE_OP);
if (!op) {
return (AE_NO_MEMORY);
}
status = acpi_ps_parse_aml (op, obj_desc->method.pcode,
obj_desc->method.pcode_length,
ACPI_PARSE_LOAD_PASS1 | ACPI_PARSE_DELETE_TREE,
method_node, NULL, NULL,
acpi_ds_load1_begin_op, acpi_ds_load1_end_op);
acpi_ps_delete_parse_tree (op);
/*
* Delete the operands on the previous walkstate operand stack
* (they were copied to new objects)
*/
for (i = 0; i < obj_desc->method.param_count; i++) {
acpi_cm_remove_reference (this_walk_state->operands [i]);
this_walk_state->operands [i] = NULL;
}
/* Clear the operand stack */
this_walk_state->num_operands = 0;
return (AE_OK);
/* On error, we must delete the new walk state */
cleanup:
acpi_ds_terminate_control_method (next_walk_state);
acpi_ds_delete_walk_state (next_walk_state);
return (status);
}
acpi_status acpi_ps_execute_table(struct acpi_evaluate_info *info)
{
acpi_status status;
union acpi_parse_object *op = NULL;
struct acpi_walk_state *walk_state = NULL;
ACPI_FUNCTION_TRACE(ps_execute_table);
/* Create and init a Root Node */
op = acpi_ps_create_scope_op(info->obj_desc->method.aml_start);
if (!op) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Create and initialize a new walk state */
walk_state =
acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
NULL, NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup;
}
status = acpi_ds_init_aml_walk(walk_state, op, info->node,
info->obj_desc->method.aml_start,
info->obj_desc->method.aml_length, info,
info->pass_number);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
if (info->obj_desc->method.info_flags & ACPI_METHOD_MODULE_LEVEL) {
walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL;
}
/* Info->Node is the default location to load the table */
if (info->node && info->node != acpi_gbl_root_node) {
status =
acpi_ds_scope_stack_push(info->node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
}
/*
* Parse the AML, walk_state will be deleted by parse_aml
*/
acpi_ex_enter_interpreter();
status = acpi_ps_parse_aml(walk_state);
acpi_ex_exit_interpreter();
walk_state = NULL;
cleanup:
if (walk_state) {
acpi_ds_delete_walk_state(walk_state);
}
if (op) {
acpi_ps_delete_parse_tree(op);
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: ns_one_complete_parse
*
* PARAMETERS: pass_number - 1 or 2
* table_desc - The table to be parsed.
*
* RETURN: Status
*
* DESCRIPTION: Perform one complete parse of an ACPI/AML table.
*
******************************************************************************/
acpi_status
acpi_ns_one_complete_parse(u32 pass_number,
u32 table_index,
struct acpi_namespace_node *start_node)
{
union acpi_parse_object *parse_root;
acpi_status status;
u32 aml_length;
u8 *aml_start;
struct acpi_walk_state *walk_state;
struct acpi_table_header *table;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(ns_one_complete_parse);
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Create and init a Root Node */
parse_root = acpi_ps_create_scope_op();
if (!parse_root) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(AE_NO_MEMORY);
}
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(status);
}
/* Table must consist of at least a complete header */
if (table->length < sizeof(struct acpi_table_header)) {
status = AE_BAD_HEADER;
} else {
aml_start = (u8 *) table + sizeof(struct acpi_table_header);
aml_length = table->length - sizeof(struct acpi_table_header);
status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
aml_start, aml_length, NULL,
(u8) pass_number);
}
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
/* start_node is the default location to load the table */
if (start_node && start_node != acpi_gbl_root_node) {
status =
acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
}
/* Parse the AML */
<<<<<<< HEAD
acpi_status
acpi_ns_one_complete_parse(u32 pass_number,
u32 table_index,
struct acpi_namespace_node *start_node)
{
union acpi_parse_object *parse_root;
acpi_status status;
u32 aml_length;
u8 *aml_start;
struct acpi_walk_state *walk_state;
struct acpi_table_header *table;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(ns_one_complete_parse);
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* */
parse_root = acpi_ps_create_scope_op();
if (!parse_root) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* */
walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(AE_NO_MEMORY);
}
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(status);
}
/* */
if (table->length < sizeof(struct acpi_table_header)) {
status = AE_BAD_HEADER;
} else {
aml_start = (u8 *) table + sizeof(struct acpi_table_header);
aml_length = table->length - sizeof(struct acpi_table_header);
status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
aml_start, aml_length, NULL,
(u8) pass_number);
}
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
/* */
if (start_node && start_node != acpi_gbl_root_node) {
status =
acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
walk_state);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup;
}
}
/* */
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %u parse\n",
pass_number));
status = acpi_ps_parse_aml(walk_state);
cleanup:
acpi_ps_delete_parse_tree(parse_root);
return_ACPI_STATUS(status);
}
