forked from luck/tmp_suning_uos_patched
4be44fcd3b
Signed-off-by: Len Brown <len.brown@intel.com>
1168 lines
31 KiB
C
1168 lines
31 KiB
C
/******************************************************************************
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*
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* Module Name: dsopcode - Dispatcher Op Region support and handling of
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* "control" opcodes
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acparser.h>
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#include <acpi/amlcode.h>
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#include <acpi/acdispat.h>
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#include <acpi/acinterp.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acevents.h>
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME("dsopcode")
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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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static acpi_status
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acpi_ds_init_buffer_field(u16 aml_opcode,
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union acpi_operand_object *obj_desc,
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union acpi_operand_object *buffer_desc,
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union acpi_operand_object *offset_desc,
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union acpi_operand_object *length_desc,
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union acpi_operand_object *result_desc);
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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("ds_execute_arguments");
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/*
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* Allocate a new parser op to be the root of the parsed tree
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*/
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op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP);
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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, 1);
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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);
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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, 3);
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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] buffer_field 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, acpi_ns_get_parent_node(node),
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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_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_REPORT_ERROR(("No pointer back to NS node in buffer obj %p\n", 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_REPORT_ERROR(("No pointer back to NS node in package %p\n",
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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 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->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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|
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/* Get the Region node */
|
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node = obj_desc->region.node;
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|
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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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|
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"[%4.4s] op_region 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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|
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/* Execute the argument AML */
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status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
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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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*
|
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* FUNCTION: acpi_ds_initialize_region
|
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*
|
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* PARAMETERS: obj_handle - Region namespace node
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*
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* RETURN: Status
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*
|
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* DESCRIPTION: Front end to ev_initialize_region
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*
|
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******************************************************************************/
|
|
|
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acpi_status acpi_ds_initialize_region(acpi_handle obj_handle)
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{
|
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union acpi_operand_object *obj_desc;
|
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acpi_status status;
|
|
|
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obj_desc = acpi_ns_get_attached_object(obj_handle);
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|
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/* Namespace is NOT locked */
|
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|
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status = acpi_ev_initialize_region(obj_desc, FALSE);
|
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return (status);
|
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}
|
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|
|
/*******************************************************************************
|
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*
|
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* FUNCTION: acpi_ds_init_buffer_field
|
|
*
|
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* PARAMETERS: aml_opcode - create_xxx_field
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* obj_desc - buffer_field object
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* buffer_desc - Host Buffer
|
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* offset_desc - Offset into buffer
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* length_desc - Length of field (CREATE_FIELD_OP only)
|
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* result_desc - Where to store the result
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*
|
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* RETURN: Status
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*
|
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* DESCRIPTION: Perform actual initialization of a buffer field
|
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*
|
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******************************************************************************/
|
|
|
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static acpi_status
|
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acpi_ds_init_buffer_field(u16 aml_opcode,
|
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union acpi_operand_object *obj_desc,
|
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union acpi_operand_object *buffer_desc,
|
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union acpi_operand_object *offset_desc,
|
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union acpi_operand_object *length_desc,
|
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union acpi_operand_object *result_desc)
|
|
{
|
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u32 offset;
|
|
u32 bit_offset;
|
|
u32 bit_count;
|
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u8 field_flags;
|
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acpi_status status;
|
|
|
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ACPI_FUNCTION_TRACE_PTR("ds_init_buffer_field", obj_desc);
|
|
|
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/* Host object must be a Buffer */
|
|
|
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if (ACPI_GET_OBJECT_TYPE(buffer_desc) != ACPI_TYPE_BUFFER) {
|
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Target of Create Field is not a Buffer object - %s\n",
|
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acpi_ut_get_object_type_name(buffer_desc)));
|
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|
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status = AE_AML_OPERAND_TYPE;
|
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goto cleanup;
|
|
}
|
|
|
|
/*
|
|
* The last parameter to all of these opcodes (result_desc) started
|
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* out as a name_string, and should therefore now be a NS node
|
|
* after resolution in acpi_ex_resolve_operands().
|
|
*/
|
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if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"(%s) destination not a NS Node [%s]\n",
|
|
acpi_ps_get_opcode_name(aml_opcode),
|
|
acpi_ut_get_descriptor_name(result_desc)));
|
|
|
|
status = AE_AML_OPERAND_TYPE;
|
|
goto cleanup;
|
|
}
|
|
|
|
offset = (u32) offset_desc->integer.value;
|
|
|
|
/*
|
|
* Setup the Bit offsets and counts, according to the opcode
|
|
*/
|
|
switch (aml_opcode) {
|
|
case AML_CREATE_FIELD_OP:
|
|
|
|
/* Offset is in bits, count is in bits */
|
|
|
|
field_flags = AML_FIELD_ACCESS_BYTE;
|
|
bit_offset = offset;
|
|
bit_count = (u32) length_desc->integer.value;
|
|
|
|
/* Must have a valid (>0) bit count */
|
|
|
|
if (bit_count == 0) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Attempt to create_field of length 0\n"));
|
|
status = AE_AML_OPERAND_VALUE;
|
|
goto cleanup;
|
|
}
|
|
break;
|
|
|
|
case AML_CREATE_BIT_FIELD_OP:
|
|
|
|
/* Offset is in bits, Field is one bit */
|
|
|
|
bit_offset = offset;
|
|
bit_count = 1;
|
|
field_flags = AML_FIELD_ACCESS_BYTE;
|
|
break;
|
|
|
|
case AML_CREATE_BYTE_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one byte */
|
|
|
|
bit_offset = 8 * offset;
|
|
bit_count = 8;
|
|
field_flags = AML_FIELD_ACCESS_BYTE;
|
|
break;
|
|
|
|
case AML_CREATE_WORD_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one word */
|
|
|
|
bit_offset = 8 * offset;
|
|
bit_count = 16;
|
|
field_flags = AML_FIELD_ACCESS_WORD;
|
|
break;
|
|
|
|
case AML_CREATE_DWORD_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one dword */
|
|
|
|
bit_offset = 8 * offset;
|
|
bit_count = 32;
|
|
field_flags = AML_FIELD_ACCESS_DWORD;
|
|
break;
|
|
|
|
case AML_CREATE_QWORD_FIELD_OP:
|
|
|
|
/* Offset is in bytes, field is one qword */
|
|
|
|
bit_offset = 8 * offset;
|
|
bit_count = 64;
|
|
field_flags = AML_FIELD_ACCESS_QWORD;
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Unknown field creation opcode %02x\n",
|
|
aml_opcode));
|
|
status = AE_AML_BAD_OPCODE;
|
|
goto cleanup;
|
|
}
|
|
|
|
/* Entire field must fit within the current length of the buffer */
|
|
|
|
if ((bit_offset + bit_count) > (8 * (u32) buffer_desc->buffer.length)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Field [%4.4s] size %d exceeds Buffer [%4.4s] size %d (bits)\n",
|
|
acpi_ut_get_node_name(result_desc),
|
|
bit_offset + bit_count,
|
|
acpi_ut_get_node_name(buffer_desc->buffer.
|
|
node),
|
|
8 * (u32) buffer_desc->buffer.length));
|
|
status = AE_AML_BUFFER_LIMIT;
|
|
goto cleanup;
|
|
}
|
|
|
|
/*
|
|
* Initialize areas of the field object that are common to all fields
|
|
* For field_flags, use LOCK_RULE = 0 (NO_LOCK),
|
|
* UPDATE_RULE = 0 (UPDATE_PRESERVE)
|
|
*/
|
|
status = acpi_ex_prep_common_field_object(obj_desc, field_flags, 0,
|
|
bit_offset, bit_count);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto cleanup;
|
|
}
|
|
|
|
obj_desc->buffer_field.buffer_obj = buffer_desc;
|
|
|
|
/* Reference count for buffer_desc inherits obj_desc count */
|
|
|
|
buffer_desc->common.reference_count = (u16)
|
|
(buffer_desc->common.reference_count +
|
|
obj_desc->common.reference_count);
|
|
|
|
cleanup:
|
|
|
|
/* Always delete the operands */
|
|
|
|
acpi_ut_remove_reference(offset_desc);
|
|
acpi_ut_remove_reference(buffer_desc);
|
|
|
|
if (aml_opcode == AML_CREATE_FIELD_OP) {
|
|
acpi_ut_remove_reference(length_desc);
|
|
}
|
|
|
|
/* On failure, delete the result descriptor */
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
acpi_ut_remove_reference(result_desc); /* Result descriptor */
|
|
} else {
|
|
/* Now the address and length are valid for this buffer_field */
|
|
|
|
obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID;
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_eval_buffer_field_operands
|
|
*
|
|
* PARAMETERS: walk_state - Current walk
|
|
* Op - A valid buffer_field Op object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get buffer_field Buffer and Index
|
|
* Called from acpi_ds_exec_end_op during buffer_field parse tree walk
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op)
|
|
{
|
|
acpi_status status;
|
|
union acpi_operand_object *obj_desc;
|
|
struct acpi_namespace_node *node;
|
|
union acpi_parse_object *next_op;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR("ds_eval_buffer_field_operands", op);
|
|
|
|
/*
|
|
* This is where we evaluate the address and length fields of the
|
|
* create_xxx_field declaration
|
|
*/
|
|
node = op->common.node;
|
|
|
|
/* next_op points to the op that holds the Buffer */
|
|
|
|
next_op = op->common.value.arg;
|
|
|
|
/* Evaluate/create the address and length operands */
|
|
|
|
status = acpi_ds_create_operands(walk_state, next_op);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
obj_desc = acpi_ns_get_attached_object(node);
|
|
if (!obj_desc) {
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
|
}
|
|
|
|
/* Resolve the operands */
|
|
|
|
status = acpi_ex_resolve_operands(op->common.aml_opcode,
|
|
ACPI_WALK_OPERANDS, walk_state);
|
|
|
|
ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
|
|
acpi_ps_get_opcode_name(op->common.aml_opcode),
|
|
walk_state->num_operands,
|
|
"after acpi_ex_resolve_operands");
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "(%s) bad operand(s) (%X)\n",
|
|
acpi_ps_get_opcode_name(op->common.
|
|
aml_opcode), status));
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Initialize the Buffer Field */
|
|
|
|
if (op->common.aml_opcode == AML_CREATE_FIELD_OP) {
|
|
/* NOTE: Slightly different operands for this opcode */
|
|
|
|
status =
|
|
acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
|
|
walk_state->operands[0],
|
|
walk_state->operands[1],
|
|
walk_state->operands[2],
|
|
walk_state->operands[3]);
|
|
} else {
|
|
/* All other, create_xxx_field opcodes */
|
|
|
|
status =
|
|
acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
|
|
walk_state->operands[0],
|
|
walk_state->operands[1], NULL,
|
|
walk_state->operands[2]);
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_eval_region_operands
|
|
*
|
|
* PARAMETERS: walk_state - Current walk
|
|
* Op - A valid region Op object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get region address and length
|
|
* Called from acpi_ds_exec_end_op during op_region parse tree walk
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op)
|
|
{
|
|
acpi_status status;
|
|
union acpi_operand_object *obj_desc;
|
|
union acpi_operand_object *operand_desc;
|
|
struct acpi_namespace_node *node;
|
|
union acpi_parse_object *next_op;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR("ds_eval_region_operands", op);
|
|
|
|
/*
|
|
* This is where we evaluate the address and length fields of the
|
|
* op_region declaration
|
|
*/
|
|
node = op->common.node;
|
|
|
|
/* next_op points to the op that holds the space_iD */
|
|
|
|
next_op = op->common.value.arg;
|
|
|
|
/* next_op points to address op */
|
|
|
|
next_op = next_op->common.next;
|
|
|
|
/* Evaluate/create the address and length operands */
|
|
|
|
status = acpi_ds_create_operands(walk_state, next_op);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Resolve the length and address operands to numbers */
|
|
|
|
status = acpi_ex_resolve_operands(op->common.aml_opcode,
|
|
ACPI_WALK_OPERANDS, walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
|
|
acpi_ps_get_opcode_name(op->common.aml_opcode),
|
|
1, "after acpi_ex_resolve_operands");
|
|
|
|
obj_desc = acpi_ns_get_attached_object(node);
|
|
if (!obj_desc) {
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
|
}
|
|
|
|
/*
|
|
* Get the length operand and save it
|
|
* (at Top of stack)
|
|
*/
|
|
operand_desc = walk_state->operands[walk_state->num_operands - 1];
|
|
|
|
obj_desc->region.length = (u32) operand_desc->integer.value;
|
|
acpi_ut_remove_reference(operand_desc);
|
|
|
|
/*
|
|
* Get the address and save it
|
|
* (at top of stack - 1)
|
|
*/
|
|
operand_desc = walk_state->operands[walk_state->num_operands - 2];
|
|
|
|
obj_desc->region.address = (acpi_physical_address)
|
|
operand_desc->integer.value;
|
|
acpi_ut_remove_reference(operand_desc);
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "rgn_obj %p Addr %8.8X%8.8X Len %X\n",
|
|
obj_desc,
|
|
ACPI_FORMAT_UINT64(obj_desc->region.address),
|
|
obj_desc->region.length));
|
|
|
|
/* Now the address and length are valid for this opregion */
|
|
|
|
obj_desc->region.flags |= AOPOBJ_DATA_VALID;
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_eval_data_object_operands
|
|
*
|
|
* PARAMETERS: walk_state - Current walk
|
|
* Op - A valid data_object Op object
|
|
* obj_desc - data_object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get the operands and complete the following data object types:
|
|
* Buffer, Package.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_eval_data_object_operands(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op,
|
|
union acpi_operand_object *obj_desc)
|
|
{
|
|
acpi_status status;
|
|
union acpi_operand_object *arg_desc;
|
|
u32 length;
|
|
|
|
ACPI_FUNCTION_TRACE("ds_eval_data_object_operands");
|
|
|
|
/* The first operand (for all of these data objects) is the length */
|
|
|
|
status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status = acpi_ex_resolve_operands(walk_state->opcode,
|
|
&(walk_state->
|
|
operands[walk_state->num_operands -
|
|
1]), walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Extract length operand */
|
|
|
|
arg_desc = walk_state->operands[walk_state->num_operands - 1];
|
|
length = (u32) arg_desc->integer.value;
|
|
|
|
/* Cleanup for length operand */
|
|
|
|
status = acpi_ds_obj_stack_pop(1, walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
acpi_ut_remove_reference(arg_desc);
|
|
|
|
/*
|
|
* Create the actual data object
|
|
*/
|
|
switch (op->common.aml_opcode) {
|
|
case AML_BUFFER_OP:
|
|
|
|
status =
|
|
acpi_ds_build_internal_buffer_obj(walk_state, op, length,
|
|
&obj_desc);
|
|
break;
|
|
|
|
case AML_PACKAGE_OP:
|
|
case AML_VAR_PACKAGE_OP:
|
|
|
|
status =
|
|
acpi_ds_build_internal_package_obj(walk_state, op, length,
|
|
&obj_desc);
|
|
break;
|
|
|
|
default:
|
|
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
|
|
}
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
/*
|
|
* Return the object in the walk_state, unless the parent is a package -
|
|
* in this case, the return object will be stored in the parse tree
|
|
* for the package.
|
|
*/
|
|
if ((!op->common.parent) ||
|
|
((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) &&
|
|
(op->common.parent->common.aml_opcode !=
|
|
AML_VAR_PACKAGE_OP)
|
|
&& (op->common.parent->common.aml_opcode !=
|
|
AML_NAME_OP))) {
|
|
walk_state->result_obj = obj_desc;
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_exec_begin_control_op
|
|
*
|
|
* PARAMETERS: walk_list - The list that owns the walk stack
|
|
* Op - The control Op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Handles all control ops encountered during control method
|
|
* execution.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
union acpi_generic_state *control_state;
|
|
|
|
ACPI_FUNCTION_NAME("ds_exec_begin_control_op");
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", op,
|
|
op->common.aml_opcode, walk_state));
|
|
|
|
switch (op->common.aml_opcode) {
|
|
case AML_IF_OP:
|
|
case AML_WHILE_OP:
|
|
|
|
/*
|
|
* IF/WHILE: Create a new control state to manage these
|
|
* constructs. We need to manage these as a stack, in order
|
|
* to handle nesting.
|
|
*/
|
|
control_state = acpi_ut_create_control_state();
|
|
if (!control_state) {
|
|
status = AE_NO_MEMORY;
|
|
break;
|
|
}
|
|
/*
|
|
* Save a pointer to the predicate for multiple executions
|
|
* of a loop
|
|
*/
|
|
control_state->control.aml_predicate_start =
|
|
walk_state->parser_state.aml - 1;
|
|
control_state->control.package_end =
|
|
walk_state->parser_state.pkg_end;
|
|
control_state->control.opcode = op->common.aml_opcode;
|
|
|
|
/* Push the control state on this walk's control stack */
|
|
|
|
acpi_ut_push_generic_state(&walk_state->control_state,
|
|
control_state);
|
|
break;
|
|
|
|
case AML_ELSE_OP:
|
|
|
|
/* Predicate is in the state object */
|
|
/* If predicate is true, the IF was executed, ignore ELSE part */
|
|
|
|
if (walk_state->last_predicate) {
|
|
status = AE_CTRL_TRUE;
|
|
}
|
|
|
|
break;
|
|
|
|
case AML_RETURN_OP:
|
|
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_exec_end_control_op
|
|
*
|
|
* PARAMETERS: walk_list - The list that owns the walk stack
|
|
* Op - The control Op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Handles all control ops encountered during control method
|
|
* execution.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state,
|
|
union acpi_parse_object * op)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
union acpi_generic_state *control_state;
|
|
|
|
ACPI_FUNCTION_NAME("ds_exec_end_control_op");
|
|
|
|
switch (op->common.aml_opcode) {
|
|
case AML_IF_OP:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", op));
|
|
|
|
/*
|
|
* Save the result of the predicate in case there is an
|
|
* ELSE to come
|
|
*/
|
|
walk_state->last_predicate =
|
|
(u8) walk_state->control_state->common.value;
|
|
|
|
/*
|
|
* Pop the control state that was created at the start
|
|
* of the IF and free it
|
|
*/
|
|
control_state =
|
|
acpi_ut_pop_generic_state(&walk_state->control_state);
|
|
acpi_ut_delete_generic_state(control_state);
|
|
break;
|
|
|
|
case AML_ELSE_OP:
|
|
|
|
break;
|
|
|
|
case AML_WHILE_OP:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op));
|
|
|
|
if (walk_state->control_state->common.value) {
|
|
/* Predicate was true, go back and evaluate it again! */
|
|
|
|
status = AE_CTRL_PENDING;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"[WHILE_OP] termination! Op=%p\n", op));
|
|
|
|
/* Pop this control state and free it */
|
|
|
|
control_state =
|
|
acpi_ut_pop_generic_state(&walk_state->control_state);
|
|
|
|
walk_state->aml_last_while =
|
|
control_state->control.aml_predicate_start;
|
|
acpi_ut_delete_generic_state(control_state);
|
|
break;
|
|
|
|
case AML_RETURN_OP:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"[RETURN_OP] Op=%p Arg=%p\n", op,
|
|
op->common.value.arg));
|
|
|
|
/*
|
|
* One optional operand -- the return value
|
|
* It can be either an immediate operand or a result that
|
|
* has been bubbled up the tree
|
|
*/
|
|
if (op->common.value.arg) {
|
|
/* Since we have a real Return(), delete any implicit return */
|
|
|
|
acpi_ds_clear_implicit_return(walk_state);
|
|
|
|
/* Return statement has an immediate operand */
|
|
|
|
status =
|
|
acpi_ds_create_operands(walk_state,
|
|
op->common.value.arg);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* If value being returned is a Reference (such as
|
|
* an arg or local), resolve it now because it may
|
|
* cease to exist at the end of the method.
|
|
*/
|
|
status =
|
|
acpi_ex_resolve_to_value(&walk_state->operands[0],
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Get the return value and save as the last result
|
|
* value. This is the only place where walk_state->return_desc
|
|
* is set to anything other than zero!
|
|
*/
|
|
walk_state->return_desc = walk_state->operands[0];
|
|
} else if ((walk_state->results) &&
|
|
(walk_state->results->results.num_results > 0)) {
|
|
/* Since we have a real Return(), delete any implicit return */
|
|
|
|
acpi_ds_clear_implicit_return(walk_state);
|
|
|
|
/*
|
|
* The return value has come from a previous calculation.
|
|
*
|
|
* If value being returned is a Reference (such as
|
|
* an arg or local), resolve it now because it may
|
|
* cease to exist at the end of the method.
|
|
*
|
|
* Allow references created by the Index operator to return unchanged.
|
|
*/
|
|
if ((ACPI_GET_DESCRIPTOR_TYPE
|
|
(walk_state->results->results.obj_desc[0]) ==
|
|
ACPI_DESC_TYPE_OPERAND)
|
|
&&
|
|
(ACPI_GET_OBJECT_TYPE
|
|
(walk_state->results->results.obj_desc[0]) ==
|
|
ACPI_TYPE_LOCAL_REFERENCE)
|
|
&& ((walk_state->results->results.obj_desc[0])->
|
|
reference.opcode != AML_INDEX_OP)) {
|
|
status =
|
|
acpi_ex_resolve_to_value(&walk_state->
|
|
results->results.
|
|
obj_desc[0],
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
walk_state->return_desc =
|
|
walk_state->results->results.obj_desc[0];
|
|
} else {
|
|
/* No return operand */
|
|
|
|
if (walk_state->num_operands) {
|
|
acpi_ut_remove_reference(walk_state->
|
|
operands[0]);
|
|
}
|
|
|
|
walk_state->operands[0] = NULL;
|
|
walk_state->num_operands = 0;
|
|
walk_state->return_desc = NULL;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"Completed RETURN_OP State=%p, ret_val=%p\n",
|
|
walk_state, walk_state->return_desc));
|
|
|
|
/* End the control method execution right now */
|
|
|
|
status = AE_CTRL_TERMINATE;
|
|
break;
|
|
|
|
case AML_NOOP_OP:
|
|
|
|
/* Just do nothing! */
|
|
break;
|
|
|
|
case AML_BREAK_POINT_OP:
|
|
|
|
/* Call up to the OS service layer to handle this */
|
|
|
|
status =
|
|
acpi_os_signal(ACPI_SIGNAL_BREAKPOINT,
|
|
"Executed AML Breakpoint opcode");
|
|
|
|
/* If and when it returns, all done. */
|
|
|
|
break;
|
|
|
|
case AML_BREAK_OP:
|
|
case AML_CONTINUE_OP: /* ACPI 2.0 */
|
|
|
|
/* Pop and delete control states until we find a while */
|
|
|
|
while (walk_state->control_state &&
|
|
(walk_state->control_state->control.opcode !=
|
|
AML_WHILE_OP)) {
|
|
control_state =
|
|
acpi_ut_pop_generic_state(&walk_state->
|
|
control_state);
|
|
acpi_ut_delete_generic_state(control_state);
|
|
}
|
|
|
|
/* No while found? */
|
|
|
|
if (!walk_state->control_state) {
|
|
return (AE_AML_NO_WHILE);
|
|
}
|
|
|
|
/* Was: walk_state->aml_last_while = walk_state->control_state->Control.aml_predicate_start; */
|
|
|
|
walk_state->aml_last_while =
|
|
walk_state->control_state->control.package_end;
|
|
|
|
/* Return status depending on opcode */
|
|
|
|
if (op->common.aml_opcode == AML_BREAK_OP) {
|
|
status = AE_CTRL_BREAK;
|
|
} else {
|
|
status = AE_CTRL_CONTINUE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Unknown control opcode=%X Op=%p\n",
|
|
op->common.aml_opcode, op));
|
|
|
|
status = AE_AML_BAD_OPCODE;
|
|
break;
|
|
}
|
|
|
|
return (status);
|
|
}
|