375 lines
10 KiB
C
375 lines
10 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: dsargs - Support for execution of dynamic arguments for static
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* objects (regions, fields, buffer fields, etc.)
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*
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* Copyright (C) 2000 - 2019, 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 "acnamesp.h"
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME("dsargs")
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/* Local prototypes */
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static acpi_status
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acpi_ds_execute_arguments(struct acpi_namespace_node *node,
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struct acpi_namespace_node *scope_node,
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u32 aml_length, u8 *aml_start);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_execute_arguments
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*
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* PARAMETERS: node - Object NS node
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* scope_node - Parent NS node
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* aml_length - Length of executable AML
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* aml_start - Pointer to the AML
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*
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* RETURN: Status.
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*
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* DESCRIPTION: Late (deferred) execution of region or field arguments
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*
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******************************************************************************/
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static acpi_status
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acpi_ds_execute_arguments(struct acpi_namespace_node *node,
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struct acpi_namespace_node *scope_node,
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u32 aml_length, u8 *aml_start)
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{
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acpi_status status;
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union acpi_parse_object *op;
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struct acpi_walk_state *walk_state;
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ACPI_FUNCTION_TRACE_PTR(ds_execute_arguments, aml_start);
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/* Allocate a new parser op to be the root of the parsed tree */
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op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
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if (!op) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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/* Save the Node for use in acpi_ps_parse_aml */
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op->common.node = scope_node;
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/* Create and initialize a new parser state */
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walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
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if (!walk_state) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
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aml_length, NULL, ACPI_IMODE_LOAD_PASS1);
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if (ACPI_FAILURE(status)) {
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acpi_ds_delete_walk_state(walk_state);
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goto cleanup;
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}
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/* Mark this parse as a deferred opcode */
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walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP;
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walk_state->deferred_node = node;
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/* Pass1: Parse the entire declaration */
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status = acpi_ps_parse_aml(walk_state);
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if (ACPI_FAILURE(status)) {
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goto cleanup;
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}
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/* Get and init the Op created above */
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op->common.node = node;
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acpi_ps_delete_parse_tree(op);
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/* Evaluate the deferred arguments */
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op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
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if (!op) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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op->common.node = scope_node;
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/* Create and initialize a new parser state */
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walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL);
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if (!walk_state) {
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status = AE_NO_MEMORY;
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goto cleanup;
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}
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/* Execute the opcode and arguments */
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status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start,
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aml_length, NULL, ACPI_IMODE_EXECUTE);
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if (ACPI_FAILURE(status)) {
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acpi_ds_delete_walk_state(walk_state);
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goto cleanup;
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}
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/* Mark this execution as a deferred opcode */
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walk_state->deferred_node = node;
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status = acpi_ps_parse_aml(walk_state);
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cleanup:
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acpi_ps_delete_parse_tree(op);
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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_get_buffer_field_arguments
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*
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* PARAMETERS: obj_desc - A valid buffer_field object
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*
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* RETURN: Status.
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*
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* DESCRIPTION: Get buffer_field Buffer and Index. This implements the late
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* evaluation of these field attributes.
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*
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******************************************************************************/
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acpi_status
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acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc)
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{
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union acpi_operand_object *extra_desc;
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struct acpi_namespace_node *node;
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acpi_status status;
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ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc);
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if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Get the AML pointer (method object) and buffer_field node */
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extra_desc = acpi_ns_get_secondary_object(obj_desc);
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node = obj_desc->buffer_field.node;
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ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
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(ACPI_TYPE_BUFFER_FIELD, node, NULL));
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
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acpi_ut_get_node_name(node)));
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/* Execute the AML code for the term_arg arguments */
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status = acpi_ds_execute_arguments(node, node->parent,
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extra_desc->extra.aml_length,
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extra_desc->extra.aml_start);
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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_get_bank_field_arguments
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*
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* PARAMETERS: obj_desc - A valid bank_field object
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*
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* RETURN: Status.
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*
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* DESCRIPTION: Get bank_field bank_value. This implements the late
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* evaluation of these field attributes.
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*
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******************************************************************************/
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acpi_status
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acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc)
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{
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union acpi_operand_object *extra_desc;
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struct acpi_namespace_node *node;
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acpi_status status;
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ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc);
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if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Get the AML pointer (method object) and bank_field node */
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extra_desc = acpi_ns_get_secondary_object(obj_desc);
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node = obj_desc->bank_field.node;
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ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
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(ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL));
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
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acpi_ut_get_node_name(node)));
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/* Execute the AML code for the term_arg arguments */
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status = acpi_ds_execute_arguments(node, node->parent,
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extra_desc->extra.aml_length,
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extra_desc->extra.aml_start);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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status = acpi_ut_add_address_range(obj_desc->region.space_id,
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obj_desc->region.address,
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obj_desc->region.length, 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_get_buffer_arguments
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*
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* PARAMETERS: obj_desc - A valid Buffer object
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*
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* RETURN: Status.
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*
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* DESCRIPTION: Get Buffer length and initializer byte list. This implements
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* the late evaluation of these attributes.
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*
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******************************************************************************/
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acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc)
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{
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struct acpi_namespace_node *node;
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acpi_status status;
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ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc);
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if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Get the Buffer node */
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node = obj_desc->buffer.node;
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if (!node) {
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ACPI_ERROR((AE_INFO,
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"No pointer back to namespace node in buffer object %p",
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obj_desc));
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return_ACPI_STATUS(AE_AML_INTERNAL);
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}
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n"));
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/* Execute the AML code for the term_arg arguments */
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status = acpi_ds_execute_arguments(node, node,
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obj_desc->buffer.aml_length,
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obj_desc->buffer.aml_start);
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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_get_package_arguments
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*
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* PARAMETERS: obj_desc - A valid Package object
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*
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* RETURN: Status.
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*
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* DESCRIPTION: Get Package length and initializer byte list. This implements
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* the late evaluation of these attributes.
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*
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******************************************************************************/
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acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc)
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{
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struct acpi_namespace_node *node;
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acpi_status status;
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ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc);
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if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Get the Package node */
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node = obj_desc->package.node;
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if (!node) {
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ACPI_ERROR((AE_INFO,
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"No pointer back to namespace node in package %p",
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obj_desc));
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return_ACPI_STATUS(AE_AML_INTERNAL);
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}
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Argument Init, AML Ptr: %p\n",
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obj_desc->package.aml_start));
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/* Execute the AML code for the term_arg arguments */
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status = acpi_ds_execute_arguments(node, node,
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obj_desc->package.aml_length,
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obj_desc->package.aml_start);
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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_get_region_arguments
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*
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* PARAMETERS: obj_desc - A valid region object
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*
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* RETURN: Status.
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*
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* DESCRIPTION: Get region address and length. This implements the late
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* evaluation of these region attributes.
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*
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******************************************************************************/
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acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
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{
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struct acpi_namespace_node *node;
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acpi_status status;
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union acpi_operand_object *extra_desc;
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ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc);
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if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
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return_ACPI_STATUS(AE_OK);
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}
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extra_desc = acpi_ns_get_secondary_object(obj_desc);
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if (!extra_desc) {
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return_ACPI_STATUS(AE_NOT_EXIST);
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}
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/* Get the Region node */
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node = obj_desc->region.node;
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ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
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(ACPI_TYPE_REGION, node, NULL));
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"[%4.4s] OpRegion Arg Init at AML %p\n",
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acpi_ut_get_node_name(node),
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extra_desc->extra.aml_start));
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/* Execute the argument AML */
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status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node,
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extra_desc->extra.aml_length,
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extra_desc->extra.aml_start);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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status = acpi_ut_add_address_range(obj_desc->region.space_id,
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obj_desc->region.address,
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obj_desc->region.length, node);
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return_ACPI_STATUS(status);
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}
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