mirror of https://gitee.com/openkylin/linux.git
336 lines
9.1 KiB
C
336 lines
9.1 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: psxface - Parser external interfaces
|
|
*
|
|
* Copyright (C) 2000 - 2018, Intel Corp.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include "accommon.h"
|
|
#include "acparser.h"
|
|
#include "acdispat.h"
|
|
#include "acinterp.h"
|
|
#include "actables.h"
|
|
#include "acnamesp.h"
|
|
|
|
#define _COMPONENT ACPI_PARSER
|
|
ACPI_MODULE_NAME("psxface")
|
|
|
|
/* Local Prototypes */
|
|
static void
|
|
acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_debug_trace
|
|
*
|
|
* PARAMETERS: method_name - Valid ACPI name string
|
|
* debug_level - Optional level mask. 0 to use default
|
|
* debug_layer - Optional layer mask. 0 to use default
|
|
* flags - bit 1: one shot(1) or persistent(0)
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: External interface to enable debug tracing during control
|
|
* method execution
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_debug_trace(const char *name, u32 debug_level, u32 debug_layer, u32 flags)
|
|
{
|
|
acpi_status status;
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
acpi_gbl_trace_method_name = name;
|
|
acpi_gbl_trace_flags = flags;
|
|
acpi_gbl_trace_dbg_level = debug_level;
|
|
acpi_gbl_trace_dbg_layer = debug_layer;
|
|
status = AE_OK;
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
|
return (status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_execute_method
|
|
*
|
|
* PARAMETERS: info - Method info block, contains:
|
|
* node - Method Node to execute
|
|
* obj_desc - Method object
|
|
* parameters - List of parameters to pass to the method,
|
|
* terminated by NULL. Params itself may be
|
|
* NULL if no parameters are being passed.
|
|
* return_object - Where to put method's return value (if
|
|
* any). If NULL, no value is returned.
|
|
* parameter_type - Type of Parameter list
|
|
* return_object - Where to put method's return value (if
|
|
* any). If NULL, no value is returned.
|
|
* pass_number - Parse or execute pass
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Execute a control method
|
|
*
|
|
******************************************************************************/
|
|
|
|
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->node) {
|
|
return_ACPI_STATUS(AE_NULL_ENTRY);
|
|
}
|
|
|
|
/* Init for new method, wait on concurrency semaphore */
|
|
|
|
status =
|
|
acpi_ds_begin_method_execution(info->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);
|
|
|
|
/*
|
|
* Execute the method. Performs parse simultaneously
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
|
"**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
|
|
info->node->name.ascii, info->node, info->obj_desc));
|
|
|
|
/* 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 */
|
|
|
|
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->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);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ps_execute_table
|
|
*
|
|
* PARAMETERS: info - Method info block, contains:
|
|
* node - Node to where the is entered into the
|
|
* namespace
|
|
* obj_desc - Pseudo method object describing the AML
|
|
* code of the entire table
|
|
* pass_number - Parse or execute pass
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Execute a table
|
|
*
|
|
******************************************************************************/
|
|
|
|
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: acpi_ps_update_parameter_list
|
|
*
|
|
* PARAMETERS: info - See struct acpi_evaluate_info
|
|
* (Used: parameter_type and Parameters)
|
|
* action - Add or Remove reference
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Update reference count on all method parameter objects
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action)
|
|
{
|
|
u32 i;
|
|
|
|
if (info->parameters) {
|
|
|
|
/* Update reference count for each parameter */
|
|
|
|
for (i = 0; info->parameters[i]; i++) {
|
|
|
|
/* Ignore errors, just do them all */
|
|
|
|
(void)acpi_ut_update_object_reference(info->
|
|
parameters[i],
|
|
action);
|
|
}
|
|
}
|
|
}
|