mirror of https://gitee.com/openkylin/linux.git
746 lines
18 KiB
C
746 lines
18 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/******************************************************************************
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*
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* Module Name: dswload2 - Dispatcher second pass namespace load callbacks
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*
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* Copyright (C) 2000 - 2020, Intel Corp.
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*
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*****************************************************************************/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acparser.h"
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#include "amlcode.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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#include "acevents.h"
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#ifdef ACPI_EXEC_APP
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#include "aecommon.h"
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#endif
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME("dswload2")
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_load2_begin_op
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*
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* PARAMETERS: walk_state - Current state of the parse tree walk
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* out_op - Where to return op if a new one is created
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*
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* RETURN: Status
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*
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* DESCRIPTION: Descending callback used during the loading of ACPI tables.
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*
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******************************************************************************/
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acpi_status
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acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
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union acpi_parse_object **out_op)
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{
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union acpi_parse_object *op;
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struct acpi_namespace_node *node;
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acpi_status status;
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acpi_object_type object_type;
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char *buffer_ptr;
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u32 flags;
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ACPI_FUNCTION_TRACE(ds_load2_begin_op);
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op = walk_state->op;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
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walk_state));
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if (op) {
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if ((walk_state->control_state) &&
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(walk_state->control_state->common.state ==
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ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
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/* We are executing a while loop outside of a method */
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status = acpi_ds_exec_begin_op(walk_state, out_op);
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return_ACPI_STATUS(status);
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}
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/* We only care about Namespace opcodes here */
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if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
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(walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
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(!(walk_state->op_info->flags & AML_NAMED))) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Get the name we are going to enter or lookup in the namespace */
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if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
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/* For Namepath op, get the path string */
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buffer_ptr = op->common.value.string;
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if (!buffer_ptr) {
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/* No name, just exit */
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return_ACPI_STATUS(AE_OK);
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}
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} else {
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/* Get name from the op */
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buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
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}
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} else {
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/* Get the namestring from the raw AML */
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buffer_ptr =
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acpi_ps_get_next_namestring(&walk_state->parser_state);
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}
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/* Map the opcode into an internal object type */
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object_type = walk_state->op_info->object_type;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"State=%p Op=%p Type=%X\n", walk_state, op,
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object_type));
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switch (walk_state->opcode) {
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case AML_FIELD_OP:
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case AML_BANK_FIELD_OP:
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case AML_INDEX_FIELD_OP:
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node = NULL;
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status = AE_OK;
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break;
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case AML_INT_NAMEPATH_OP:
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/*
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* The name_path is an object reference to an existing object.
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* Don't enter the name into the namespace, but look it up
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* for use later.
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*/
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status =
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acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
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object_type, ACPI_IMODE_EXECUTE,
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ACPI_NS_SEARCH_PARENT, walk_state, &(node));
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break;
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case AML_SCOPE_OP:
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/* Special case for Scope(\) -> refers to the Root node */
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if (op && (op->named.node == acpi_gbl_root_node)) {
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node = op->named.node;
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status =
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acpi_ds_scope_stack_push(node, object_type,
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walk_state);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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} else {
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/*
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* The Path is an object reference to an existing object.
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* Don't enter the name into the namespace, but look it up
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* for use later.
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*/
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status =
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acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
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object_type, ACPI_IMODE_EXECUTE,
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ACPI_NS_SEARCH_PARENT, walk_state,
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&(node));
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if (ACPI_FAILURE(status)) {
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#ifdef ACPI_ASL_COMPILER
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if (status == AE_NOT_FOUND) {
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status = AE_OK;
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} else {
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ACPI_ERROR_NAMESPACE(walk_state->
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scope_info,
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buffer_ptr,
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status);
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}
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#else
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ACPI_ERROR_NAMESPACE(walk_state->scope_info,
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buffer_ptr, status);
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#endif
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return_ACPI_STATUS(status);
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}
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}
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/*
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* We must check to make sure that the target is
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* one of the opcodes that actually opens a scope
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*/
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switch (node->type) {
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case ACPI_TYPE_ANY:
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case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
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case ACPI_TYPE_DEVICE:
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case ACPI_TYPE_POWER:
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case ACPI_TYPE_PROCESSOR:
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case ACPI_TYPE_THERMAL:
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/* These are acceptable types */
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break;
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case ACPI_TYPE_INTEGER:
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case ACPI_TYPE_STRING:
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case ACPI_TYPE_BUFFER:
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/*
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* These types we will allow, but we will change the type.
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* This enables some existing code of the form:
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*
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* Name (DEB, 0)
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* Scope (DEB) { ... }
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*/
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ACPI_WARNING((AE_INFO,
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"Type override - [%4.4s] had invalid type (%s) "
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"for Scope operator, changed to type ANY",
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acpi_ut_get_node_name(node),
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acpi_ut_get_type_name(node->type)));
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node->type = ACPI_TYPE_ANY;
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walk_state->scope_info->common.value = ACPI_TYPE_ANY;
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break;
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case ACPI_TYPE_METHOD:
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/*
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* Allow scope change to root during execution of module-level
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* code. Root is typed METHOD during this time.
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*/
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if ((node == acpi_gbl_root_node) &&
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(walk_state->
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parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
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break;
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}
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/*lint -fallthrough */
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default:
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/* All other types are an error */
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ACPI_ERROR((AE_INFO,
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"Invalid type (%s) for target of "
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"Scope operator [%4.4s] (Cannot override)",
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acpi_ut_get_type_name(node->type),
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acpi_ut_get_node_name(node)));
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return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
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}
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break;
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default:
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/* All other opcodes */
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if (op && op->common.node) {
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/* This op/node was previously entered into the namespace */
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node = op->common.node;
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if (acpi_ns_opens_scope(object_type)) {
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status =
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acpi_ds_scope_stack_push(node, object_type,
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walk_state);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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}
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return_ACPI_STATUS(AE_OK);
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}
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/*
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* Enter the named type into the internal namespace. We enter the name
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* as we go downward in the parse tree. Any necessary subobjects that
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* involve arguments to the opcode must be created as we go back up the
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* parse tree later.
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*
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* Note: Name may already exist if we are executing a deferred opcode.
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*/
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if (walk_state->deferred_node) {
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/* This name is already in the namespace, get the node */
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node = walk_state->deferred_node;
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status = AE_OK;
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break;
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}
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flags = ACPI_NS_NO_UPSEARCH;
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if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
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/* Execution mode, node cannot already exist, node is temporary */
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flags |= ACPI_NS_ERROR_IF_FOUND;
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if (!
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(walk_state->
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parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
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flags |= ACPI_NS_TEMPORARY;
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}
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}
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#ifdef ACPI_ASL_COMPILER
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/*
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* Do not open a scope for AML_EXTERNAL_OP
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* acpi_ns_lookup can open a new scope based on the object type
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* of this op. AML_EXTERNAL_OP is a declaration rather than a
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* definition. In the case that this external is a method object,
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* acpi_ns_lookup will open a new scope. However, an AML_EXTERNAL_OP
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* associated with the ACPI_TYPE_METHOD is a declaration, rather than
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* a definition. Flags is set to avoid opening a scope for any
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* AML_EXTERNAL_OP.
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*/
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if (walk_state->opcode == AML_EXTERNAL_OP) {
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flags |= ACPI_NS_DONT_OPEN_SCOPE;
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}
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#endif
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/*
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* For name creation opcodes, the full namepath prefix must
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* exist, except for the final (new) nameseg.
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*/
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if (walk_state->op_info->flags & AML_NAMED) {
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flags |= ACPI_NS_PREFIX_MUST_EXIST;
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}
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/* Add new entry or lookup existing entry */
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status =
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acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
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object_type, ACPI_IMODE_LOAD_PASS2, flags,
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walk_state, &node);
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if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"***New Node [%4.4s] %p is temporary\n",
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acpi_ut_get_node_name(node), node));
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}
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break;
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}
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if (ACPI_FAILURE(status)) {
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ACPI_ERROR_NAMESPACE(walk_state->scope_info,
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buffer_ptr, status);
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return_ACPI_STATUS(status);
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}
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if (!op) {
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/* Create a new op */
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op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
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if (!op) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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/* Initialize the new op */
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if (node) {
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op->named.name = node->name.integer;
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}
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*out_op = op;
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}
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/*
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* Put the Node in the "op" object that the parser uses, so we
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* can get it again quickly when this scope is closed
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*/
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op->common.node = node;
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_load2_end_op
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*
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* PARAMETERS: walk_state - Current state of the parse tree walk
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*
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* RETURN: Status
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*
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* DESCRIPTION: Ascending callback used during the loading of the namespace,
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* both control methods and everything else.
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*
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******************************************************************************/
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acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
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{
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union acpi_parse_object *op;
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acpi_status status = AE_OK;
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acpi_object_type object_type;
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struct acpi_namespace_node *node;
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union acpi_parse_object *arg;
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struct acpi_namespace_node *new_node;
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u32 i;
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u8 region_space;
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#ifdef ACPI_EXEC_APP
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union acpi_operand_object *obj_desc;
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char *namepath;
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#endif
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ACPI_FUNCTION_TRACE(ds_load2_end_op);
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op = walk_state->op;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
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walk_state->op_info->name, op, walk_state));
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/* Check if opcode had an associated namespace object */
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if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
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return_ACPI_STATUS(AE_OK);
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}
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if (op->common.aml_opcode == AML_SCOPE_OP) {
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"Ending scope Op=%p State=%p\n", op,
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walk_state));
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}
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object_type = walk_state->op_info->object_type;
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/*
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* Get the Node/name from the earlier lookup
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* (It was saved in the *op structure)
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*/
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node = op->common.node;
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/*
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* Put the Node on the object stack (Contains the ACPI Name of
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* this object)
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*/
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walk_state->operands[0] = (void *)node;
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walk_state->num_operands = 1;
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/* Pop the scope stack */
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if (acpi_ns_opens_scope(object_type) &&
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(op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"(%s) Popping scope for Op %p\n",
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acpi_ut_get_type_name(object_type), op));
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status = acpi_ds_scope_stack_pop(walk_state);
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if (ACPI_FAILURE(status)) {
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goto cleanup;
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}
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}
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|
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/*
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* Named operations are as follows:
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*
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* AML_ALIAS
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* AML_BANKFIELD
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* AML_CREATEBITFIELD
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* AML_CREATEBYTEFIELD
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* AML_CREATEDWORDFIELD
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* AML_CREATEFIELD
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* AML_CREATEQWORDFIELD
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* AML_CREATEWORDFIELD
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* AML_DATA_REGION
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* AML_DEVICE
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* AML_EVENT
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* AML_FIELD
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* AML_INDEXFIELD
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* AML_METHOD
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* AML_METHODCALL
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* AML_MUTEX
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* AML_NAME
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* AML_NAMEDFIELD
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* AML_OPREGION
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* AML_POWERRES
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* AML_PROCESSOR
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* AML_SCOPE
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* AML_THERMALZONE
|
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*/
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
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"Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
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acpi_ps_get_opcode_name(op->common.aml_opcode),
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walk_state, op, node));
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|
|
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/* Decode the opcode */
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|
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arg = op->common.value.arg;
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|
|
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switch (walk_state->op_info->type) {
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|
|
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case AML_TYPE_CREATE_FIELD:
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/*
|
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* Create the field object, but the field buffer and index must
|
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* be evaluated later during the execution phase
|
|
*/
|
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status = acpi_ds_create_buffer_field(op, walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
"CreateBufferField failure"));
|
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goto cleanup;
|
|
}
|
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break;
|
|
|
|
case AML_TYPE_NAMED_FIELD:
|
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/*
|
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* If we are executing a method, initialize the field
|
|
*/
|
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if (walk_state->method_node) {
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status = acpi_ds_init_field_objects(op, walk_state);
|
|
}
|
|
|
|
switch (op->common.aml_opcode) {
|
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case AML_INDEX_FIELD_OP:
|
|
|
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status =
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acpi_ds_create_index_field(op,
|
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(acpi_handle)arg->common.
|
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node, walk_state);
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break;
|
|
|
|
case AML_BANK_FIELD_OP:
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|
|
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status =
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acpi_ds_create_bank_field(op, arg->common.node,
|
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walk_state);
|
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break;
|
|
|
|
case AML_FIELD_OP:
|
|
|
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status =
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acpi_ds_create_field(op, arg->common.node,
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walk_state);
|
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break;
|
|
|
|
default:
|
|
|
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/* All NAMED_FIELD opcodes must be handled above */
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break;
|
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}
|
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break;
|
|
|
|
case AML_TYPE_NAMED_SIMPLE:
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|
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status = acpi_ds_create_operands(walk_state, arg);
|
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if (ACPI_FAILURE(status)) {
|
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goto cleanup;
|
|
}
|
|
|
|
switch (op->common.aml_opcode) {
|
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case AML_PROCESSOR_OP:
|
|
|
|
status = acpi_ex_create_processor(walk_state);
|
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break;
|
|
|
|
case AML_POWER_RESOURCE_OP:
|
|
|
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status = acpi_ex_create_power_resource(walk_state);
|
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break;
|
|
|
|
case AML_MUTEX_OP:
|
|
|
|
status = acpi_ex_create_mutex(walk_state);
|
|
break;
|
|
|
|
case AML_EVENT_OP:
|
|
|
|
status = acpi_ex_create_event(walk_state);
|
|
break;
|
|
|
|
case AML_ALIAS_OP:
|
|
|
|
status = acpi_ex_create_alias(walk_state);
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Unknown opcode */
|
|
|
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status = AE_OK;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Delete operands */
|
|
|
|
for (i = 1; i < walk_state->num_operands; i++) {
|
|
acpi_ut_remove_reference(walk_state->operands[i]);
|
|
walk_state->operands[i] = NULL;
|
|
}
|
|
|
|
break;
|
|
|
|
case AML_TYPE_NAMED_COMPLEX:
|
|
|
|
switch (op->common.aml_opcode) {
|
|
case AML_REGION_OP:
|
|
case AML_DATA_REGION_OP:
|
|
|
|
if (op->common.aml_opcode == AML_REGION_OP) {
|
|
region_space = (acpi_adr_space_type)
|
|
((op->common.value.arg)->common.value.
|
|
integer);
|
|
} else {
|
|
region_space = ACPI_ADR_SPACE_DATA_TABLE;
|
|
}
|
|
|
|
/*
|
|
* The op_region is not fully parsed at this time. The only valid
|
|
* argument is the space_id. (We must save the address of the
|
|
* AML of the address and length operands)
|
|
*
|
|
* If we have a valid region, initialize it. The namespace is
|
|
* unlocked at this point.
|
|
*
|
|
* Need to unlock interpreter if it is locked (if we are running
|
|
* a control method), in order to allow _REG methods to be run
|
|
* during acpi_ev_initialize_region.
|
|
*/
|
|
if (walk_state->method_node) {
|
|
/*
|
|
* Executing a method: initialize the region and unlock
|
|
* the interpreter
|
|
*/
|
|
status = acpi_ex_create_region(op->named.data,
|
|
op->named.length,
|
|
region_space,
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
status =
|
|
acpi_ev_initialize_region
|
|
(acpi_ns_get_attached_object(node));
|
|
break;
|
|
|
|
case AML_NAME_OP:
|
|
|
|
status = acpi_ds_create_node(walk_state, node, op);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto cleanup;
|
|
}
|
|
#ifdef ACPI_EXEC_APP
|
|
/*
|
|
* acpi_exec support for namespace initialization file (initialize
|
|
* Name opcodes in this code.)
|
|
*/
|
|
namepath = acpi_ns_get_external_pathname(node);
|
|
status = ae_lookup_init_file_entry(namepath, &obj_desc);
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
/* Detach any existing object, attach new object */
|
|
|
|
if (node->object) {
|
|
acpi_ns_detach_object(node);
|
|
}
|
|
acpi_ns_attach_object(node, obj_desc,
|
|
obj_desc->common.type);
|
|
}
|
|
ACPI_FREE(namepath);
|
|
status = AE_OK;
|
|
#endif
|
|
break;
|
|
|
|
case AML_METHOD_OP:
|
|
/*
|
|
* method_op pkg_length name_string method_flags term_list
|
|
*
|
|
* Note: We must create the method node/object pair as soon as we
|
|
* see the method declaration. This allows later pass1 parsing
|
|
* of invocations of the method (need to know the number of
|
|
* arguments.)
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"LOADING-Method: State=%p Op=%p NamedObj=%p\n",
|
|
walk_state, op, op->named.node));
|
|
|
|
if (!acpi_ns_get_attached_object(op->named.node)) {
|
|
walk_state->operands[0] =
|
|
ACPI_CAST_PTR(void, op->named.node);
|
|
walk_state->num_operands = 1;
|
|
|
|
status =
|
|
acpi_ds_create_operands(walk_state,
|
|
op->common.value.
|
|
arg);
|
|
if (ACPI_SUCCESS(status)) {
|
|
status =
|
|
acpi_ex_create_method(op->named.
|
|
data,
|
|
op->named.
|
|
length,
|
|
walk_state);
|
|
}
|
|
|
|
walk_state->operands[0] = NULL;
|
|
walk_state->num_operands = 0;
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* All NAMED_COMPLEX opcodes must be handled above */
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case AML_CLASS_INTERNAL:
|
|
|
|
/* case AML_INT_NAMEPATH_OP: */
|
|
break;
|
|
|
|
case AML_CLASS_METHOD_CALL:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
|
|
walk_state, op, node));
|
|
|
|
/*
|
|
* Lookup the method name and save the Node
|
|
*/
|
|
status =
|
|
acpi_ns_lookup(walk_state->scope_info,
|
|
arg->common.value.string, ACPI_TYPE_ANY,
|
|
ACPI_IMODE_LOAD_PASS2,
|
|
ACPI_NS_SEARCH_PARENT |
|
|
ACPI_NS_DONT_OPEN_SCOPE, walk_state,
|
|
&(new_node));
|
|
if (ACPI_SUCCESS(status)) {
|
|
/*
|
|
* Make sure that what we found is indeed a method
|
|
* We didn't search for a method on purpose, to see if the name
|
|
* would resolve
|
|
*/
|
|
if (new_node->type != ACPI_TYPE_METHOD) {
|
|
status = AE_AML_OPERAND_TYPE;
|
|
}
|
|
|
|
/* We could put the returned object (Node) on the object stack for
|
|
* later, but for now, we will put it in the "op" object that the
|
|
* parser uses, so we can get it again at the end of this scope
|
|
*/
|
|
op->common.node = new_node;
|
|
} else {
|
|
ACPI_ERROR_NAMESPACE(walk_state->scope_info,
|
|
arg->common.value.string, status);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
}
|
|
|
|
cleanup:
|
|
|
|
/* Remove the Node pushed at the very beginning */
|
|
|
|
walk_state->operands[0] = NULL;
|
|
walk_state->num_operands = 0;
|
|
return_ACPI_STATUS(status);
|
|
}
|