acpi_status acpi_ds_call_control_method(struct acpi_thread_state *thread, struct acpi_walk_state *this_walk_state, union acpi_parse_object *op) { acpi_status status; struct acpi_namespace_node *method_node; struct acpi_walk_state *next_walk_state = NULL; union acpi_operand_object *obj_desc; struct acpi_evaluate_info *info; u32 i; ACPI_FUNCTION_TRACE_PTR(ds_call_control_method, this_walk_state); ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Calling method %p, currentstate=%p\n", this_walk_state->prev_op, this_walk_state)); /* * 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_ACPI_STATUS(AE_NULL_ENTRY); } obj_desc = acpi_ns_get_attached_object(method_node); if (!obj_desc) { return_ACPI_STATUS(AE_NULL_OBJECT); } /* Init for new method, possibly wait on method mutex */ status = acpi_ds_begin_method_execution(method_node, obj_desc, this_walk_state); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Begin method parse/execution. Create a new walk state */ next_walk_state = acpi_ds_create_walk_state(obj_desc->method.owner_id, NULL, obj_desc, thread); if (!next_walk_state) { status = AE_NO_MEMORY; goto cleanup; } /* * 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. Also, null terminate the list of arguments */ this_walk_state->operands[this_walk_state->num_operands] = NULL; /* * Allocate and initialize the evaluation information block * TBD: this is somewhat inefficient, should change interface to * ds_init_aml_walk. For now, keeps this struct off the CPU stack */ info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); if (!info) { return_ACPI_STATUS(AE_NO_MEMORY); } info->parameters = &this_walk_state->operands[0]; info->parameter_type = ACPI_PARAM_ARGS; status = acpi_ds_init_aml_walk(next_walk_state, NULL, method_node, obj_desc->method.aml_start, obj_desc->method.aml_length, info, ACPI_IMODE_EXECUTE); ACPI_FREE(info); if (ACPI_FAILURE(status)) { goto cleanup; } /* * 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_ut_remove_reference(this_walk_state->operands[i]); this_walk_state->operands[i] = NULL; } /* Clear the operand stack */ this_walk_state->num_operands = 0; ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "**** Begin nested execution of [%4.4s] **** WalkState=%p\n", method_node->name.ascii, next_walk_state)); /* Invoke an internal method if necessary */ if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) { status = obj_desc->method.implementation(next_walk_state); } return_ACPI_STATUS(status); cleanup: /* On error, we must terminate the method properly */ acpi_ds_terminate_control_method(obj_desc, next_walk_state); if (next_walk_state) { acpi_ds_delete_walk_state(next_walk_state); } return_ACPI_STATUS(status); }
acpi_status acpi_ds_call_control_method(struct acpi_thread_state *thread, struct acpi_walk_state *this_walk_state, union acpi_parse_object *op) { acpi_status status; struct acpi_namespace_node *method_node; struct acpi_walk_state *next_walk_state = NULL; union acpi_operand_object *obj_desc; struct acpi_parameter_info info; u32 i; ACPI_FUNCTION_TRACE_PTR("ds_call_control_method", this_walk_state); ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Execute method %p, currentstate=%p\n", this_walk_state->prev_op, this_walk_state)); /* * 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_ACPI_STATUS(AE_NULL_ENTRY); } obj_desc = acpi_ns_get_attached_object(method_node); if (!obj_desc) { return_ACPI_STATUS(AE_NULL_OBJECT); } /* Init for new method, wait on concurrency semaphore */ status = acpi_ds_begin_method_execution(method_node, obj_desc, this_walk_state->method_node); if (ACPI_FAILURE(status)) { goto cleanup; } if (!(obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY)) { /* 1) Parse: Create a new walk state for the preempting walk */ next_walk_state = acpi_ds_create_walk_state(obj_desc->method.owner_id, op, obj_desc, NULL); if (!next_walk_state) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Create and init a Root Node */ op = acpi_ps_create_scope_op(); if (!op) { status = AE_NO_MEMORY; goto cleanup; } status = acpi_ds_init_aml_walk(next_walk_state, op, method_node, obj_desc->method.aml_start, obj_desc->method.aml_length, NULL, 1); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(next_walk_state); goto cleanup; } /* Begin AML parse */ status = acpi_ps_parse_aml(next_walk_state); acpi_ps_delete_parse_tree(op); } /* 2) Execute: Create a new state for the preempting walk */ next_walk_state = acpi_ds_create_walk_state(obj_desc->method.owner_id, NULL, obj_desc, thread); if (!next_walk_state) { status = AE_NO_MEMORY; goto cleanup; } /* * 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. Also, null terminate the list of arguments */ this_walk_state->operands[this_walk_state->num_operands] = NULL; info.parameters = &this_walk_state->operands[0]; info.parameter_type = ACPI_PARAM_ARGS; status = acpi_ds_init_aml_walk(next_walk_state, NULL, method_node, obj_desc->method.aml_start, obj_desc->method.aml_length, &info, 3); if (ACPI_FAILURE(status)) { goto cleanup; } /* * 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_ut_remove_reference(this_walk_state->operands[i]); this_walk_state->operands[i] = NULL; } /* Clear the operand stack */ this_walk_state->num_operands = 0; ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Starting nested execution, newstate=%p\n", next_walk_state)); if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) { status = obj_desc->method.implementation(next_walk_state); } return_ACPI_STATUS(status); cleanup: /* Decrement the thread count on the method parse tree */ if (next_walk_state && (next_walk_state->method_desc)) { next_walk_state->method_desc->method.thread_count--; } /* On error, we must delete the new walk state */ acpi_ds_terminate_control_method(next_walk_state); acpi_ds_delete_walk_state(next_walk_state); return_ACPI_STATUS(status); }
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info) { acpi_status status; union acpi_parse_object *op; struct acpi_walk_state *walk_state; ACPI_FUNCTION_TRACE(ps_execute_method); /* Quick validation of DSDT header */ acpi_tb_check_dsdt_header(); /* Validate the Info and method Node */ if (!info || !info->resolved_node) { return_ACPI_STATUS(AE_NULL_ENTRY); } /* Init for new method, wait on concurrency semaphore */ status = acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc, NULL); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* * The caller "owns" the parameters, so give each one an extra reference */ acpi_ps_update_parameter_list(info, REF_INCREMENT); /* Begin tracing if requested */ acpi_ps_start_trace(info); /* * Execute the method. Performs parse simultaneously */ ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n", info->resolved_node->name.ascii, info->resolved_node, info->obj_desc)); /* Create and init a Root Node */ op = acpi_ps_create_scope_op(); if (!op) { status = AE_NO_MEMORY; goto cleanup; } /* Create and initialize a new walk state */ info->pass_number = ACPI_IMODE_EXECUTE; 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->resolved_node, info->obj_desc->method.aml_start, info->obj_desc->method.aml_length, info, info->pass_number); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } if (info->obj_desc->method.info_flags & ACPI_METHOD_MODULE_LEVEL) { walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL; } /* Invoke an internal method if necessary */ if (info->obj_desc->method.info_flags & ACPI_METHOD_INTERNAL_ONLY) { status = info->obj_desc->method.dispatch.implementation(walk_state); info->return_object = walk_state->return_desc; /* Cleanup states */ acpi_ds_scope_stack_clear(walk_state); acpi_ps_cleanup_scope(&walk_state->parser_state); acpi_ds_terminate_control_method(walk_state->method_desc, walk_state); acpi_ds_delete_walk_state(walk_state); goto cleanup; } /* * Start method evaluation with an implicit return of zero. * This is done for Windows compatibility. */ if (acpi_gbl_enable_interpreter_slack) { walk_state->implicit_return_obj = acpi_ut_create_integer_object((u64) 0); if (!walk_state->implicit_return_obj) { status = AE_NO_MEMORY; acpi_ds_delete_walk_state(walk_state); goto cleanup; } } /* Parse the AML */ status = acpi_ps_parse_aml(walk_state); /* walk_state was deleted by parse_aml */ cleanup: acpi_ps_delete_parse_tree(op); /* End optional tracing */ acpi_ps_stop_trace(info); /* Take away the extra reference that we gave the parameters above */ acpi_ps_update_parameter_list(info, REF_DECREMENT); /* Exit now if error above */ if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* * If the method has returned an object, signal this to the caller with * a control exception code */ if (info->return_object) { ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n", info->return_object)); ACPI_DUMP_STACK_ENTRY(info->return_object); status = AE_CTRL_RETURN_VALUE; } return_ACPI_STATUS(status); }
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info) { acpi_status status; union acpi_parse_object *op; struct acpi_walk_state *walk_state; ACPI_FUNCTION_TRACE(ps_execute_method); if (!info || !info->resolved_node) { return_ACPI_STATUS(AE_NULL_ENTRY); } status = acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc, NULL); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } acpi_ps_update_parameter_list(info, REF_INCREMENT); acpi_ps_start_trace(info); ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n", info->resolved_node->name.ascii, info->resolved_node, info->obj_desc)); op = acpi_ps_create_scope_op(); if (!op) { status = AE_NO_MEMORY; goto cleanup; } info->pass_number = ACPI_IMODE_EXECUTE; 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->resolved_node, info->obj_desc->method.aml_start, info->obj_desc->method.aml_length, info, info->pass_number); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } if (info->obj_desc->method.flags & AOPOBJ_MODULE_LEVEL) { walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL; } if (info->obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) { status = info->obj_desc->method.implementation(walk_state); info->return_object = walk_state->return_desc; acpi_ds_scope_stack_clear(walk_state); acpi_ps_cleanup_scope(&walk_state->parser_state); acpi_ds_terminate_control_method(walk_state->method_desc, walk_state); acpi_ds_delete_walk_state(walk_state); goto cleanup; } if (acpi_gbl_enable_interpreter_slack) { walk_state->implicit_return_obj = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); if (!walk_state->implicit_return_obj) { status = AE_NO_MEMORY; acpi_ds_delete_walk_state(walk_state); goto cleanup; } walk_state->implicit_return_obj->integer.value = 0; } status = acpi_ps_parse_aml(walk_state); cleanup: acpi_ps_delete_parse_tree(op); acpi_ps_stop_trace(info); acpi_ps_update_parameter_list(info, REF_DECREMENT); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } if (info->return_object) { ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n", info->return_object)); ACPI_DUMP_STACK_ENTRY(info->return_object); status = AE_CTRL_RETURN_VALUE; } return_ACPI_STATUS(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); }