ACPI_FUNCTION_TRACE(ns_parse_table);
- if (acpi_gbl_execute_tables_as_methods) {
- /*
- * This case executes the AML table as one large control method.
- * The point of this is to execute any module-level code in-place
- * as the table is parsed. Some AML code depends on this behavior.
- *
- * It is a run-time option at this time, but will eventually become
- * the default.
- *
- * Note: This causes the table to only have a single-pass parse.
- * However, this is compatible with other ACPI implementations.
- */
- ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE,
- "%s: **** Start table execution pass\n",
- ACPI_GET_FUNCTION_NAME));
-
- status = acpi_ns_execute_table(table_index, start_node);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- } else {
- /*
- * AML Parse, pass 1
- *
- * In this pass, we load most of the namespace. Control methods
- * are not parsed until later. A parse tree is not created.
- * Instead, each Parser Op subtree is deleted when it is finished.
- * This saves a great deal of memory, and allows a small cache of
- * parse objects to service the entire parse. The second pass of
- * the parse then performs another complete parse of the AML.
- */
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 1\n"));
-
- status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS1,
- table_index, start_node);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
+ /*
+ * Executes the AML table as one large control method.
+ * The point of this is to execute any module-level code in-place
+ * as the table is parsed. Some AML code depends on this behavior.
+ *
+ * Note: This causes the table to only have a single-pass parse.
+ * However, this is compatible with other ACPI implementations.
+ */
+ ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE,
+ "%s: **** Start table execution pass\n",
+ ACPI_GET_FUNCTION_NAME));
- /*
- * AML Parse, pass 2
- *
- * In this pass, we resolve forward references and other things
- * that could not be completed during the first pass.
- * Another complete parse of the AML is performed, but the
- * overhead of this is compensated for by the fact that the
- * parse objects are all cached.
- */
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 2\n"));
- status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS2,
- table_index, start_node);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- }
+ status = acpi_ns_execute_table(table_index, start_node);
return_ACPI_STATUS(status);
}
acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
u8 * aml_op_start, union acpi_parse_object *op);
-static void
-acpi_ps_link_module_code(union acpi_parse_object *parent_op,
- u8 *aml_start, u32 aml_length, acpi_owner_id owner_id);
-
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_arguments
{
acpi_status status = AE_OK;
union acpi_parse_object *arg = NULL;
- const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state);
walk_state->arg_count,
walk_state->pass_number));
- /*
- * This case handles the legacy option that groups all module-level
- * code blocks together and defers execution until all of the tables
- * are loaded. Execute all of these blocks at this time.
- * Execute any module-level code that was detected during the table
- * load phase.
- *
- * Note: this option is deprecated and will be eliminated in the
- * future. Use of this option can cause problems with AML code that
- * depends upon in-order immediate execution of module-level code.
- */
- if (!acpi_gbl_execute_tables_as_methods &&
- (walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) &&
- ((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:
- /*
- * Currently supported module-level opcodes are:
- * IF/ELSE/WHILE. These appear to be the most common,
- * and easiest to support since they open an AML
- * package.
- */
- if (walk_state->pass_number ==
- ACPI_IMODE_LOAD_PASS1) {
- acpi_ps_link_module_code(op->common.
- parent,
- aml_op_start,
- (u32)
- (walk_state->
- parser_state.
- pkg_end -
- aml_op_start),
- walk_state->
- owner_id);
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
- "Pass1: Skipping an If/Else/While body\n"));
-
- /* Skip body of if/else/while in pass 1 */
-
- walk_state->parser_state.aml =
- walk_state->parser_state.pkg_end;
- walk_state->arg_count = 0;
- break;
-
- default:
- /*
- * Check for an unsupported executable opcode at module
- * level. We must be in PASS1, the parent must be a SCOPE,
- * The opcode class must be EXECUTE, and the opcode must
- * not be an argument to another opcode.
- */
- if ((walk_state->pass_number ==
- ACPI_IMODE_LOAD_PASS1)
- && (op->common.parent->common.aml_opcode ==
- AML_SCOPE_OP)) {
- op_info =
- acpi_ps_get_opcode_info(op->common.
- aml_opcode);
- if ((op_info->class ==
- AML_CLASS_EXECUTE) && (!arg)) {
- ACPI_WARNING((AE_INFO,
- "Unsupported module-level executable opcode "
- "0x%.2X at table offset 0x%.4X",
- op->common.
- aml_opcode,
- (u32)
- (ACPI_PTR_DIFF
- (aml_op_start,
- walk_state->
- parser_state.
- aml_start) +
- sizeof(struct
- acpi_table_header))));
- }
- }
- break;
- }
- }
-
/* Special processing for certain opcodes */
switch (op->common.aml_opcode) {
return_ACPI_STATUS(AE_OK);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_link_module_code
- *
- * PARAMETERS: parent_op - Parent parser op
- * aml_start - Pointer to the AML
- * aml_length - Length of executable AML
- * owner_id - owner_id of module level code
- *
- * RETURN: None.
- *
- * DESCRIPTION: Wrap the module-level code with a method object and link the
- * object to the global list. Note, the mutex field of the method
- * object is used to link multiple module-level code objects.
- *
- * NOTE: In this legacy option, each block of detected executable AML
- * code that is outside of any control method is wrapped with a temporary
- * control method object and placed on a global list below.
- *
- * This function executes the module-level code for all tables only after
- * all of the tables have been loaded. It is a legacy option and is
- * not compatible with other ACPI implementations. See acpi_ns_load_table.
- *
- * This function will be removed when the legacy option is removed.
- *
- ******************************************************************************/
-
-static void
-acpi_ps_link_module_code(union acpi_parse_object *parent_op,
- u8 *aml_start, u32 aml_length, acpi_owner_id owner_id)
-{
- union acpi_operand_object *prev;
- union acpi_operand_object *next;
- union acpi_operand_object *method_obj;
- struct acpi_namespace_node *parent_node;
-
- ACPI_FUNCTION_TRACE(ps_link_module_code);
-
- /* Get the tail of the list */
-
- prev = next = acpi_gbl_module_code_list;
- while (next) {
- prev = next;
- next = next->method.mutex;
- }
-
- /*
- * Insert the module level code into the list. Merge it if it is
- * adjacent to the previous element.
- */
- if (!prev ||
- ((prev->method.aml_start + prev->method.aml_length) != aml_start)) {
-
- /* Create, initialize, and link a new temporary method object */
-
- method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
- if (!method_obj) {
- return_VOID;
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
- "Create/Link new code block: %p\n",
- method_obj));
-
- if (parent_op->common.node) {
- parent_node = parent_op->common.node;
- } else {
- parent_node = acpi_gbl_root_node;
- }
-
- method_obj->method.aml_start = aml_start;
- method_obj->method.aml_length = aml_length;
- method_obj->method.owner_id = owner_id;
- method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL;
-
- /*
- * Save the parent node in next_object. This is cheating, but we
- * don't want to expand the method object.
- */
- method_obj->method.next_object =
- ACPI_CAST_PTR(union acpi_operand_object, parent_node);
-
- if (!prev) {
- acpi_gbl_module_code_list = method_obj;
- } else {
- prev->method.mutex = method_obj;
- }
- } else {
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
- "Appending to existing code block: %p\n",
- prev));
-
- prev->method.aml_length += aml_length;
- }
-
- return_VOID;
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_ps_parse_loop
"While loading namespace from ACPI tables"));
}
- if (acpi_gbl_execute_tables_as_methods) {
- /*
- * If the module-level code support is enabled, initialize the objects
- * in the namespace that remain uninitialized. This runs the executable
- * AML that may be part of the declaration of these name objects:
- * operation_regions, buffer_fields, Buffers, and Packages.
- *
- * Note: The module-level code is optional at this time, but will
- * become the default in the future.
- */
- status = acpi_ns_initialize_objects();
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
+ /*
+ * Initialize the objects in the namespace that remain uninitialized.
+ * This runs the executable AML that may be part of the declaration of
+ * these name objects:
+ * operation_regions, buffer_fields, Buffers, and Packages.
+ *
+ */
+ status = acpi_ns_initialize_objects();
+ if (ACPI_SUCCESS(status)) {
+ acpi_gbl_namespace_initialized = TRUE;
}
- acpi_gbl_namespace_initialized = TRUE;
return_ACPI_STATUS(status);
}
projects / users / jedix / linux-maple.git / commitdiff