acpi_status
acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
union acpi_operand_object *obj_desc)
{
acpi_status status;
union acpi_parse_object *op = NULL;
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE_PTR(ds_auto_serialize_method, node);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Method auto-serialization parse [%4.4s] %p\n",
acpi_ut_get_node_name(node), node));
acpi_ex_enter_interpreter();
/* Create/Init a root op for the method parse tree */
op = acpi_ps_alloc_op(AML_METHOD_OP, obj_desc->method.aml_start);
if (!op) {
status = AE_NO_MEMORY;
goto unlock;
}
acpi_ps_set_name(op, node->name.integer);
op->common.node = node;
/* Create and initialize a new walk state */
walk_state =
acpi_ds_create_walk_state(node->owner_id, NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op(op);
status = AE_NO_MEMORY;
goto unlock;
}
status = acpi_ds_init_aml_walk(walk_state, op, node,
obj_desc->method.aml_start,
obj_desc->method.aml_length, NULL, 0);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
acpi_ps_free_op(op);
return_ACPI_STATUS(status);
}
walk_state->descending_callback = acpi_ds_detect_named_opcodes;
/* Parse the method, scan for creation of named objects */
status = acpi_ps_parse_aml(walk_state);
acpi_ps_delete_parse_tree(op);
unlock:
acpi_ex_exit_interpreter();
return_ACPI_STATUS(status);
}
acpi_status
acpi_ps_delete_completed_op (
struct acpi_walk_state *walk_state)
{
acpi_ps_free_op (walk_state->op);
return (AE_OK);
}
static ACPI_STATUS
acpi_ps_delete_completed_op (
ACPI_WALK_STATE *state,
ACPI_PARSE_OBJECT *op)
{
acpi_ps_free_op (op);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ps_delete_parse_tree
*
* PARAMETERS: subtree_root - Root of tree (or subtree) to delete
*
* RETURN: None
*
* DESCRIPTION: Delete a portion of or an entire parse tree.
*
******************************************************************************/
void acpi_ps_delete_parse_tree(union acpi_parse_object *subtree_root)
{
union acpi_parse_object *op = subtree_root;
union acpi_parse_object *next = NULL;
union acpi_parse_object *parent = NULL;
ACPI_FUNCTION_TRACE_PTR(ps_delete_parse_tree, subtree_root);
/* Visit all nodes in the subtree */
while (op) {
/* Check if we are not ascending */
if (op != parent) {
/* Look for an argument or child of the current op */
next = acpi_ps_get_arg(op, 0);
if (next) {
/* Still going downward in tree (Op is not completed yet) */
op = next;
continue;
}
}
/* No more children, this Op is complete. */
next = op->common.next;
parent = op->common.parent;
acpi_ps_free_op(op);
/* If we are back to the starting point, the walk is complete. */
if (op == subtree_root) {
return_VOID;
}
if (next) {
op = next;
} else {
op = parent;
}
}
return_VOID;
}
acpi_status
acpi_ns_one_complete_parse (
u32 pass_number,
acpi_table_desc *table_desc)
{
acpi_parse_object *parse_root;
acpi_status status;
acpi_walk_state *walk_state;
FUNCTION_TRACE ("Ns_one_complete_parse");
/* Create and init a Root Node */
parse_root = acpi_ps_alloc_op (AML_SCOPE_OP);
if (!parse_root) {
return_ACPI_STATUS (AE_NO_MEMORY);
}
((acpi_parse2_object *) parse_root)->name = ACPI_ROOT_NAME;
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state (TABLE_ID_DSDT,
NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op (parse_root);
return_ACPI_STATUS (AE_NO_MEMORY);
}
status = acpi_ds_init_aml_walk (walk_state, parse_root, NULL, table_desc->aml_start,
table_desc->aml_length, NULL, NULL, pass_number);
if (ACPI_FAILURE (status)) {
acpi_ds_delete_walk_state (walk_state);
return_ACPI_STATUS (status);
}
/* Parse the AML */
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %d parse\n", pass_number));
status = acpi_ps_parse_aml (walk_state);
acpi_ps_delete_parse_tree (parse_root);
return_ACPI_STATUS (status);
}
/**ltl
* 功能: ACPI表解析
* 参数:
* 返回值:
* 说明:
*/
acpi_status
acpi_ns_one_complete_parse(u8 pass_number, struct acpi_table_desc *table_desc)
{
union acpi_parse_object *parse_root;
acpi_status status;
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE(ns_one_complete_parse);
/* Create and init a Root Node */
/* 创建parse对象 */
parse_root = acpi_ps_create_scope_op();
if (!parse_root) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Create and initialize a new walk state */
/* 创建walk state对象 */
walk_state = acpi_ds_create_walk_state(table_desc->owner_id,
NULL, NULL, NULL);
if (!walk_state) {
acpi_ps_free_op(parse_root);
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* 初始化init walk */
status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
table_desc->aml_start,
table_desc->aml_length, NULL,
pass_number);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
return_ACPI_STATUS(status);
}
/* Parse the AML */
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %d parse\n",
pass_number));
/* 解析AML */
status = acpi_ps_parse_aml(walk_state);
acpi_ps_delete_parse_tree(parse_root);
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);
}
/* 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_ps_create_op(struct acpi_walk_state *walk_state,
u8 *aml_op_start, union acpi_parse_object **new_op)
{
acpi_status status = AE_OK;
union acpi_parse_object *op;
union acpi_parse_object *named_op = NULL;
union acpi_parse_object *parent_scope;
u8 argument_count;
const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state);
status = acpi_ps_get_aml_opcode(walk_state);
if (status == AE_CTRL_PARSE_CONTINUE) {
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
}
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Create Op structure and append to parent's argument list */
walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
op = acpi_ps_alloc_op(walk_state->opcode, aml_op_start);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
if (walk_state->op_info->flags & AML_NAMED) {
status =
acpi_ps_build_named_op(walk_state, aml_op_start, op,
&named_op);
acpi_ps_free_op(op);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
*new_op = named_op;
return_ACPI_STATUS(AE_OK);
}
/* Not a named opcode, just allocate Op and append to parent */
if (walk_state->op_info->flags & AML_CREATE) {
/*
* Backup to beginning of create_XXXfield declaration
* body_length is unknown until we parse the body
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
if (walk_state->opcode == AML_BANK_FIELD_OP) {
/*
* Backup to beginning of bank_field declaration
* body_length is unknown until we parse the body
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
acpi_ps_append_arg(parent_scope, op);
if (parent_scope) {
op_info =
acpi_ps_get_opcode_info(parent_scope->common.aml_opcode);
if (op_info->flags & AML_HAS_TARGET) {
argument_count =
acpi_ps_get_argument_count(op_info->type);
if (parent_scope->common.arg_list_length >
argument_count) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
}
/*
* Special case for both Increment() and Decrement(), where
* the lone argument is both a source and a target.
*/
else if ((parent_scope->common.aml_opcode == AML_INCREMENT_OP)
|| (parent_scope->common.aml_opcode ==
AML_DECREMENT_OP)) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
}
if (walk_state->descending_callback != NULL) {
/*
* Find the object. This will either insert the object into
* the namespace or simply look it up
*/
walk_state->op = *new_op = op;
status = walk_state->descending_callback(walk_state, &op);
status = acpi_ps_next_parse_state(walk_state, op, status);
if (status == AE_CTRL_PENDING) {
status = AE_CTRL_PARSE_PENDING;
}
}
return_ACPI_STATUS(status);
}
acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
acpi_status status2;
union acpi_parse_object *op = NULL; /* current op */
union acpi_parse_object *arg = NULL;
union acpi_parse_object *pre_op = NULL;
struct acpi_parse_state *parser_state;
u8 *aml_op_start = NULL;
ACPI_FUNCTION_TRACE_PTR("ps_parse_loop", walk_state);
if (walk_state->descending_callback == NULL) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
parser_state = &walk_state->parser_state;
walk_state->arg_types = 0;
#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {
/* We are restarting a preempted control method */
if (acpi_ps_has_completed_scope(parser_state)) {
/*
* We must check if a predicate to an IF or WHILE statement
* was just completed
*/
if ((parser_state->scope->parse_scope.op) &&
((parser_state->scope->parse_scope.op->common.
aml_opcode == AML_IF_OP)
|| (parser_state->scope->parse_scope.op->common.
aml_opcode == AML_WHILE_OP))
&& (walk_state->control_state)
&& (walk_state->control_state->common.state ==
ACPI_CONTROL_PREDICATE_EXECUTING)) {
/*
* A predicate was just completed, get the value of the
* predicate and branch based on that value
*/
walk_state->op = NULL;
status =
acpi_ds_get_predicate_value(walk_state,
ACPI_TO_POINTER
(TRUE));
if (ACPI_FAILURE(status)
&& ((status & AE_CODE_MASK) !=
AE_CODE_CONTROL)) {
if (status == AE_AML_NO_RETURN_VALUE) {
ACPI_EXCEPTION((AE_INFO, status,
"Invoked method did not return a value"));
}
ACPI_EXCEPTION((AE_INFO, status,
"get_predicate Failed"));
return_ACPI_STATUS(status);
}
status =
acpi_ps_next_parse_state(walk_state, op,
status);
}
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Popped scope, Op=%p\n", op));
} else if (walk_state->prev_op) {
/* We were in the middle of an op */
op = walk_state->prev_op;
walk_state->arg_types = walk_state->prev_arg_types;
}
}
#endif
/* Iterative parsing loop, while there is more AML to process: */
while ((parser_state->aml < parser_state->aml_end) || (op)) {
aml_op_start = parser_state->aml;
if (!op) {
/* Get the next opcode from the AML stream */
walk_state->aml_offset =
(u32) ACPI_PTR_DIFF(parser_state->aml,
parser_state->aml_start);
walk_state->opcode = acpi_ps_peek_opcode(parser_state);
/*
* First cut to determine what we have found:
* 1) A valid AML opcode
* 2) A name string
* 3) An unknown/invalid opcode
*/
walk_state->op_info =
acpi_ps_get_opcode_info(walk_state->opcode);
switch (walk_state->op_info->class) {
case AML_CLASS_ASCII:
case AML_CLASS_PREFIX:
/*
* Starts with a valid prefix or ASCII char, this is a name
* string. Convert the bare name string to a namepath.
*/
walk_state->opcode = AML_INT_NAMEPATH_OP;
walk_state->arg_types = ARGP_NAMESTRING;
break;
case AML_CLASS_UNKNOWN:
/* The opcode is unrecognized. Just skip unknown opcodes */
ACPI_ERROR((AE_INFO,
"Found unknown opcode %X at AML address %p offset %X, ignoring",
walk_state->opcode,
parser_state->aml,
walk_state->aml_offset));
ACPI_DUMP_BUFFER(parser_state->aml, 128);
/* Assume one-byte bad opcode */
parser_state->aml++;
continue;
default:
/* Found opcode info, this is a normal opcode */
parser_state->aml +=
acpi_ps_get_opcode_size(walk_state->opcode);
walk_state->arg_types =
walk_state->op_info->parse_args;
break;
}
/* Create Op structure and append to parent's argument list */
if (walk_state->op_info->flags & AML_NAMED) {
/* Allocate a new pre_op if necessary */
if (!pre_op) {
pre_op =
acpi_ps_alloc_op(walk_state->
opcode);
if (!pre_op) {
status = AE_NO_MEMORY;
goto close_this_op;
}
}
pre_op->common.value.arg = NULL;
pre_op->common.aml_opcode = walk_state->opcode;
/*
* Get and append arguments until we find the node that contains
* the name (the type ARGP_NAME).
*/
while (GET_CURRENT_ARG_TYPE
(walk_state->arg_types)
&&
(GET_CURRENT_ARG_TYPE
(walk_state->arg_types) != ARGP_NAME)) {
status =
acpi_ps_get_next_arg(walk_state,
parser_state,
GET_CURRENT_ARG_TYPE
(walk_state->
arg_types),
&arg);
if (ACPI_FAILURE(status)) {
goto close_this_op;
}
acpi_ps_append_arg(pre_op, arg);
INCREMENT_ARG_LIST(walk_state->
arg_types);
}
/*
* Make sure that we found a NAME and didn't run out of
* arguments
*/
if (!GET_CURRENT_ARG_TYPE
(walk_state->arg_types)) {
status = AE_AML_NO_OPERAND;
goto close_this_op;
}
/* We know that this arg is a name, move to next arg */
INCREMENT_ARG_LIST(walk_state->arg_types);
/*
* Find the object. This will either insert the object into
* the namespace or simply look it up
*/
walk_state->op = NULL;
status =
walk_state->descending_callback(walk_state,
&op);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"During name lookup/catalog"));
goto close_this_op;
}
if (!op) {
continue;
}
status =
acpi_ps_next_parse_state(walk_state, op,
status);
if (status == AE_CTRL_PENDING) {
status = AE_OK;
goto close_this_op;
}
if (ACPI_FAILURE(status)) {
goto close_this_op;
}
acpi_ps_append_arg(op,
pre_op->common.value.arg);
acpi_gbl_depth++;
if (op->common.aml_opcode == AML_REGION_OP) {
/*
* Defer final parsing of an operation_region body,
* because we don't have enough info in the first pass
* to parse it correctly (i.e., there may be method
* calls within the term_arg elements of the body.)
*
* However, we must continue parsing because
* the opregion is not a standalone package --
* we don't know where the end is at this point.
*
* (Length is unknown until parse of the body complete)
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
} else {
/* Not a named opcode, just allocate Op and append to parent */
walk_state->op_info =
acpi_ps_get_opcode_info(walk_state->opcode);
op = acpi_ps_alloc_op(walk_state->opcode);
if (!op) {
status = AE_NO_MEMORY;
goto close_this_op;
}
if (walk_state->op_info->flags & AML_CREATE) {
/*
* Backup to beginning of create_xXXfield declaration
* body_length is unknown until we parse the body
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
acpi_ps_append_arg(acpi_ps_get_parent_scope
(parser_state), op);
if ((walk_state->descending_callback != NULL)) {
/*
* Find the object. This will either insert the object into
* the namespace or simply look it up
*/
walk_state->op = op;
status =
walk_state->
descending_callback(walk_state,
&op);
status =
acpi_ps_next_parse_state(walk_state,
op,
status);
if (status == AE_CTRL_PENDING) {
status = AE_OK;
goto close_this_op;
}
if (ACPI_FAILURE(status)) {
goto close_this_op;
}
}
}
op->common.aml_offset = walk_state->aml_offset;
if (walk_state->op_info) {
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n",
(u32) op->common.aml_opcode,
walk_state->op_info->name, op,
parser_state->aml,
op->common.aml_offset));
}
}
/*
* Start arg_count at zero because we don't know if there are
* any args yet
*/
walk_state->arg_count = 0;
/* Are there any arguments that must be processed? */
if (walk_state->arg_types) {
/* Get arguments */
switch (op->common.aml_opcode) {
case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
case AML_WORD_OP: /* AML_WORDDATA_ARG */
case AML_DWORD_OP: /* AML_DWORDATA_ARG */
case AML_QWORD_OP: /* AML_QWORDATA_ARG */
case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */
/* Fill in constant or string argument directly */
acpi_ps_get_next_simple_arg(parser_state,
GET_CURRENT_ARG_TYPE
(walk_state->
arg_types), op);
break;
case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */
status =
acpi_ps_get_next_namepath(walk_state,
parser_state, op,
1);
if (ACPI_FAILURE(status)) {
goto close_this_op;
}
walk_state->arg_types = 0;
break;
default:
/*
* Op is not a constant or string, append each argument
* to the Op
*/
while (GET_CURRENT_ARG_TYPE
(walk_state->arg_types)
&& !walk_state->arg_count) {
walk_state->aml_offset = (u32)
ACPI_PTR_DIFF(parser_state->aml,
parser_state->
aml_start);
status =
acpi_ps_get_next_arg(walk_state,
parser_state,
GET_CURRENT_ARG_TYPE
(walk_state->
arg_types),
&arg);
if (ACPI_FAILURE(status)) {
goto close_this_op;
}
if (arg) {
arg->common.aml_offset =
walk_state->aml_offset;
acpi_ps_append_arg(op, arg);
}
INCREMENT_ARG_LIST(walk_state->
arg_types);
}
/* Special processing for certain opcodes */
/* TBD (remove): Temporary mechanism to disable this code if needed */
#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
if ((walk_state->pass_number <=
ACPI_IMODE_LOAD_PASS1)
&&
((walk_state->
parse_flags & ACPI_PARSE_DISASSEMBLE) ==
0)) {
/*
* We want to skip If/Else/While constructs during Pass1
* because we want to actually conditionally execute the
* code during Pass2.
*
* Except for disassembly, where we always want to
* walk the If/Else/While packages
*/
switch (op->common.aml_opcode) {
case AML_IF_OP:
case AML_ELSE_OP:
case AML_WHILE_OP:
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Pass1: Skipping an If/Else/While body\n"));
/* Skip body of if/else/while in pass 1 */
parser_state->aml =
parser_state->pkg_end;
walk_state->arg_count = 0;
break;
default:
break;
}
}
#endif
switch (op->common.aml_opcode) {
case AML_METHOD_OP:
/*
* Skip parsing of control method
* because we don't have enough info in the first pass
* to parse it correctly.
*
* Save the length and address of the body
*/
op->named.data = parser_state->aml;
op->named.length =
(u32) (parser_state->pkg_end -
parser_state->aml);
/* Skip body of method */
parser_state->aml =
parser_state->pkg_end;
walk_state->arg_count = 0;
break;
case AML_BUFFER_OP:
case AML_PACKAGE_OP:
case AML_VAR_PACKAGE_OP:
if ((op->common.parent) &&
(op->common.parent->common.
aml_opcode == AML_NAME_OP)
&& (walk_state->pass_number <=
ACPI_IMODE_LOAD_PASS2)) {
/*
* Skip parsing of Buffers and Packages
* because we don't have enough info in the first pass
* to parse them correctly.
*/
op->named.data = aml_op_start;
op->named.length =
(u32) (parser_state->
pkg_end -
aml_op_start);
/* Skip body */
parser_state->aml =
parser_state->pkg_end;
walk_state->arg_count = 0;
}
break;
case AML_WHILE_OP:
if (walk_state->control_state) {
walk_state->control_state->
control.package_end =
parser_state->pkg_end;
}
break;
default:
/* No action for all other opcodes */
break;
}
break;
}
}
/* Check for arguments that need to be processed */
if (walk_state->arg_count) {
/*
* There are arguments (complex ones), push Op and
* prepare for argument
*/
status = acpi_ps_push_scope(parser_state, op,
walk_state->arg_types,
walk_state->arg_count);
if (ACPI_FAILURE(status)) {
goto close_this_op;
}
op = NULL;
continue;
}
/*
* All arguments have been processed -- Op is complete,
* prepare for next
*/
walk_state->op_info =
acpi_ps_get_opcode_info(op->common.aml_opcode);
if (walk_state->op_info->flags & AML_NAMED) {
if (acpi_gbl_depth) {
acpi_gbl_depth--;
}
if (op->common.aml_opcode == AML_REGION_OP) {
/*
* Skip parsing of control method or opregion body,
* because we don't have enough info in the first pass
* to parse them correctly.
*
* Completed parsing an op_region declaration, we now
* know the length.
*/
op->named.length =
(u32) (parser_state->aml - op->named.data);
}
}
if (walk_state->op_info->flags & AML_CREATE) {
/*
* Backup to beginning of create_xXXfield declaration (1 for
* Opcode)
*
* body_length is unknown until we parse the body
*/
op->named.length =
(u32) (parser_state->aml - op->named.data);
}
/* This op complete, notify the dispatcher */
if (walk_state->ascending_callback != NULL) {
walk_state->op = op;
walk_state->opcode = op->common.aml_opcode;
status = walk_state->ascending_callback(walk_state);
status =
acpi_ps_next_parse_state(walk_state, op, status);
if (status == AE_CTRL_PENDING) {
status = AE_OK;
goto close_this_op;
}
}
close_this_op:
/*
* Finished one argument of the containing scope
*/
parser_state->scope->parse_scope.arg_count--;
/* Finished with pre_op */
if (pre_op) {
acpi_ps_free_op(pre_op);
pre_op = NULL;
}
/* Close this Op (will result in parse subtree deletion) */
status2 = acpi_ps_complete_this_op(walk_state, op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
op = NULL;
switch (status) {
case AE_OK:
break;
case AE_CTRL_TRANSFER:
/* We are about to transfer to a called method. */
walk_state->prev_op = op;
walk_state->prev_arg_types = walk_state->arg_types;
return_ACPI_STATUS(status);
case AE_CTRL_END:
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
if (op) {
walk_state->op = op;
walk_state->op_info =
acpi_ps_get_opcode_info(op->common.
aml_opcode);
walk_state->opcode = op->common.aml_opcode;
status =
walk_state->ascending_callback(walk_state);
status =
acpi_ps_next_parse_state(walk_state, op,
status);
status2 =
acpi_ps_complete_this_op(walk_state, op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
op = NULL;
}
status = AE_OK;
break;
case AE_CTRL_BREAK:
case AE_CTRL_CONTINUE:
/* Pop off scopes until we find the While */
while (!op || (op->common.aml_opcode != AML_WHILE_OP)) {
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
if (op->common.aml_opcode != AML_WHILE_OP) {
status2 =
acpi_ds_result_stack_pop
(walk_state);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
}
/* Close this iteration of the While loop */
walk_state->op = op;
walk_state->op_info =
acpi_ps_get_opcode_info(op->common.aml_opcode);
walk_state->opcode = op->common.aml_opcode;
status = walk_state->ascending_callback(walk_state);
status =
acpi_ps_next_parse_state(walk_state, op, status);
status2 = acpi_ps_complete_this_op(walk_state, op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
op = NULL;
status = AE_OK;
break;
case AE_CTRL_TERMINATE:
status = AE_OK;
/* Clean up */
do {
if (op) {
status2 =
acpi_ps_complete_this_op(walk_state,
op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
} while (op);
return_ACPI_STATUS(status);
default: /* All other non-AE_OK status */
do {
if (op) {
status2 =
acpi_ps_complete_this_op(walk_state,
op);
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
} while (op);
/*
* TBD: Cleanup parse ops on error
*/
#if 0
if (op == NULL) {
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
}
#endif
walk_state->prev_op = op;
walk_state->prev_arg_types = walk_state->arg_types;
return_ACPI_STATUS(status);
}
/* This scope complete? */
if (acpi_ps_has_completed_scope(parser_state)) {
acpi_ps_pop_scope(parser_state, &op,
&walk_state->arg_types,
&walk_state->arg_count);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Popped scope, Op=%p\n", op));
} else {
op = NULL;
}
} /* while parser_state->Aml */
/*******************************************************************************
*
* 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);
}
/*******************************************************************************
*
* 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(acpi_native_uint pass_number,
acpi_native_uint table_index)
{
union acpi_parse_object *parse_root;
acpi_status status;
acpi_native_uint 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);
acpi_ps_delete_parse_tree(parse_root);
return_ACPI_STATUS(status);
}
/* Parse the AML */
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "*PARSE* pass %d parse\n",
(unsigned)pass_number));
status = acpi_ps_parse_aml(walk_state);
acpi_ps_delete_parse_tree(parse_root);
return_ACPI_STATUS(status);
}
acpi_status
acpi_ps_create_op(struct acpi_walk_state *walk_state,
u8 *aml_op_start, union acpi_parse_object **new_op)
{
acpi_status status = AE_OK;
union acpi_parse_object *op;
union acpi_parse_object *named_op = NULL;
union acpi_parse_object *parent_scope;
u8 argument_count;
const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state);
status = acpi_ps_get_aml_opcode(walk_state);
if (status == AE_CTRL_PARSE_CONTINUE) {
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
}
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Create Op structure and append to parent's argument list */
walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
op = acpi_ps_alloc_op(walk_state->opcode, aml_op_start);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
if (walk_state->op_info->flags & AML_NAMED) {
status =
acpi_ps_build_named_op(walk_state, aml_op_start, op,
&named_op);
acpi_ps_free_op(op);
#ifdef ACPI_ASL_COMPILER
if (acpi_gbl_disasm_flag
&& walk_state->opcode == AML_EXTERNAL_OP
&& status == AE_NOT_FOUND) {
/*
* If parsing of AML_EXTERNAL_OP's name path fails, then skip
* past this opcode and keep parsing. This is a much better
* alternative than to abort the entire disassembler. At this
* point, the parser_state is at the end of the namepath of the
* external declaration opcode. Setting walk_state->Aml to
* walk_state->parser_state.Aml + 2 moves increments the
* walk_state->Aml past the object type and the paramcount of the
* external opcode.
*/
walk_state->aml = walk_state->parser_state.aml + 2;
walk_state->parser_state.aml = walk_state->aml;
return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
}
#endif
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
*new_op = named_op;
return_ACPI_STATUS(AE_OK);
}
/* Not a named opcode, just allocate Op and append to parent */
if (walk_state->op_info->flags & AML_CREATE) {
/*
* Backup to beginning of create_XXXfield declaration
* body_length is unknown until we parse the body
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
if (walk_state->opcode == AML_BANK_FIELD_OP) {
/*
* Backup to beginning of bank_field declaration
* body_length is unknown until we parse the body
*/
op->named.data = aml_op_start;
op->named.length = 0;
}
parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
acpi_ps_append_arg(parent_scope, op);
if (parent_scope) {
op_info =
acpi_ps_get_opcode_info(parent_scope->common.aml_opcode);
if (op_info->flags & AML_HAS_TARGET) {
argument_count =
acpi_ps_get_argument_count(op_info->type);
if (parent_scope->common.arg_list_length >
argument_count) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
}
/*
* Special case for both Increment() and Decrement(), where
* the lone argument is both a source and a target.
*/
else if ((parent_scope->common.aml_opcode == AML_INCREMENT_OP)
|| (parent_scope->common.aml_opcode ==
AML_DECREMENT_OP)) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
}
if (walk_state->descending_callback != NULL) {
/*
* Find the object. This will either insert the object into
* the namespace or simply look it up
*/
walk_state->op = *new_op = op;
status = walk_state->descending_callback(walk_state, &op);
status = acpi_ps_next_parse_state(walk_state, op, status);
if (status == AE_CTRL_PENDING) {
status = AE_CTRL_PARSE_PENDING;
}
}
return_ACPI_STATUS(status);
}
