312 lines
9.4 KiB
C
312 lines
9.4 KiB
C
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Module Name: nsparse - namespace interface to AML parser
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2000 - 2016, Intel Corp.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions, and the following disclaimer,
|
||
|
|
* without modification.
|
||
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
||
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
||
|
|
* including a substantially similar Disclaimer requirement for further
|
||
|
|
* binary redistribution.
|
||
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
||
|
|
* of any contributors may be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* Alternatively, this software may be distributed under the terms of the
|
||
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
||
|
|
* Software Foundation.
|
||
|
|
*
|
||
|
|
* NO WARRANTY
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <acpi/acpi.h>
|
||
|
|
#include "accommon.h"
|
||
|
|
#include "acnamesp.h"
|
||
|
|
#include "acparser.h"
|
||
|
|
#include "acdispat.h"
|
||
|
|
#include "actables.h"
|
||
|
|
#include "acinterp.h"
|
||
|
|
|
||
|
|
#define _COMPONENT ACPI_NAMESPACE
|
||
|
|
ACPI_MODULE_NAME("nsparse")
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: ns_execute_table
|
||
|
|
*
|
||
|
|
* PARAMETERS: table_desc - An ACPI table descriptor for table to parse
|
||
|
|
* start_node - Where to enter the table into the namespace
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Load ACPI/AML table by executing the entire table as a
|
||
|
|
* term_list.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
acpi_status
|
||
|
|
acpi_ns_execute_table(u32 table_index, struct acpi_namespace_node *start_node)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
struct acpi_table_header *table;
|
||
|
|
acpi_owner_id owner_id;
|
||
|
|
struct acpi_evaluate_info *info = NULL;
|
||
|
|
u32 aml_length;
|
||
|
|
u8 *aml_start;
|
||
|
|
union acpi_operand_object *method_obj = NULL;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(ns_execute_table);
|
||
|
|
|
||
|
|
status = acpi_get_table_by_index(table_index, &table);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Table must consist of at least a complete header */
|
||
|
|
|
||
|
|
if (table->length < sizeof(struct acpi_table_header)) {
|
||
|
|
return_ACPI_STATUS(AE_BAD_HEADER);
|
||
|
|
}
|
||
|
|
|
||
|
|
aml_start = (u8 *)table + sizeof(struct acpi_table_header);
|
||
|
|
aml_length = table->length - sizeof(struct acpi_table_header);
|
||
|
|
|
||
|
|
status = acpi_tb_get_owner_id(table_index, &owner_id);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Create, initialize, and link a new temporary method object */
|
||
|
|
|
||
|
|
method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
|
||
|
|
if (!method_obj) {
|
||
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Allocate the evaluation information block */
|
||
|
|
|
||
|
|
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
|
||
|
|
if (!info) {
|
||
|
|
status = AE_NO_MEMORY;
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
||
|
|
"Create table code block: %p\n", method_obj));
|
||
|
|
|
||
|
|
method_obj->method.aml_start = aml_start;
|
||
|
|
method_obj->method.aml_length = aml_length;
|
||
|
|
method_obj->method.owner_id = owner_id;
|
||
|
|
method_obj->method.info_flags |= ACPI_METHOD_MODULE_LEVEL;
|
||
|
|
|
||
|
|
info->pass_number = ACPI_IMODE_EXECUTE;
|
||
|
|
info->node = start_node;
|
||
|
|
info->obj_desc = method_obj;
|
||
|
|
info->node_flags = info->node->flags;
|
||
|
|
info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE);
|
||
|
|
if (!info->full_pathname) {
|
||
|
|
status = AE_NO_MEMORY;
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
status = acpi_ps_execute_table(info);
|
||
|
|
|
||
|
|
cleanup:
|
||
|
|
if (info) {
|
||
|
|
ACPI_FREE(info->full_pathname);
|
||
|
|
info->full_pathname = NULL;
|
||
|
|
}
|
||
|
|
ACPI_FREE(info);
|
||
|
|
acpi_ut_remove_reference(method_obj);
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: ns_one_complete_parse
|
||
|
|
*
|
||
|
|
* PARAMETERS: pass_number - 1 or 2
|
||
|
|
* table_desc - The table to be parsed.
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Perform one complete parse of an ACPI/AML table.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ns_one_complete_parse(u32 pass_number,
|
||
|
|
u32 table_index,
|
||
|
|
struct acpi_namespace_node *start_node)
|
||
|
|
{
|
||
|
|
union acpi_parse_object *parse_root;
|
||
|
|
acpi_status status;
|
||
|
|
u32 aml_length;
|
||
|
|
u8 *aml_start;
|
||
|
|
struct acpi_walk_state *walk_state;
|
||
|
|
struct acpi_table_header *table;
|
||
|
|
acpi_owner_id owner_id;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(ns_one_complete_parse);
|
||
|
|
|
||
|
|
status = acpi_get_table_by_index(table_index, &table);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Table must consist of at least a complete header */
|
||
|
|
|
||
|
|
if (table->length < sizeof(struct acpi_table_header)) {
|
||
|
|
return_ACPI_STATUS(AE_BAD_HEADER);
|
||
|
|
}
|
||
|
|
|
||
|
|
aml_start = (u8 *)table + sizeof(struct acpi_table_header);
|
||
|
|
aml_length = table->length - sizeof(struct acpi_table_header);
|
||
|
|
|
||
|
|
status = acpi_tb_get_owner_id(table_index, &owner_id);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Create and init a Root Node */
|
||
|
|
|
||
|
|
parse_root = acpi_ps_create_scope_op(aml_start);
|
||
|
|
if (!parse_root) {
|
||
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Create and initialize a new walk state */
|
||
|
|
|
||
|
|
walk_state = acpi_ds_create_walk_state(owner_id, NULL, NULL, NULL);
|
||
|
|
if (!walk_state) {
|
||
|
|
acpi_ps_free_op(parse_root);
|
||
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
||
|
|
}
|
||
|
|
|
||
|
|
status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
|
||
|
|
aml_start, aml_length, NULL,
|
||
|
|
(u8)pass_number);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
acpi_ds_delete_walk_state(walk_state);
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Found OSDT table, enable the namespace override feature */
|
||
|
|
|
||
|
|
if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) &&
|
||
|
|
pass_number == ACPI_IMODE_LOAD_PASS1) {
|
||
|
|
walk_state->namespace_override = TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* start_node is the default location to load the table */
|
||
|
|
|
||
|
|
if (start_node && start_node != acpi_gbl_root_node) {
|
||
|
|
status =
|
||
|
|
acpi_ds_scope_stack_push(start_node, ACPI_TYPE_METHOD,
|
||
|
|
walk_state);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
acpi_ds_delete_walk_state(walk_state);
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Parse the AML */
|
||
|
|
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
||
|
|
"*PARSE* pass %u parse\n", pass_number));
|
||
|
|
acpi_ex_enter_interpreter();
|
||
|
|
status = acpi_ps_parse_aml(walk_state);
|
||
|
|
acpi_ex_exit_interpreter();
|
||
|
|
|
||
|
|
cleanup:
|
||
|
|
acpi_ps_delete_parse_tree(parse_root);
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ns_parse_table
|
||
|
|
*
|
||
|
|
* PARAMETERS: table_desc - An ACPI table descriptor for table to parse
|
||
|
|
* start_node - Where to enter the table into the namespace
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(ns_parse_table);
|
||
|
|
|
||
|
|
if (acpi_gbl_parse_table_as_term_list) {
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start load pass\n"));
|
||
|
|
|
||
|
|
status = acpi_ns_execute_table(table_index, start_node);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/*
|
||
|
|
* AML Parse, pass 1
|
||
|
|
*
|
||
|
|
* In this pass, we load most of the namespace. Control methods
|
||
|
|
* are not parsed until later. A parse tree is not created.
|
||
|
|
* Instead, each Parser Op subtree is deleted when it is finished.
|
||
|
|
* This saves a great deal of memory, and allows a small cache of
|
||
|
|
* parse objects to service the entire parse. The second pass of
|
||
|
|
* the parse then performs another complete parse of the AML.
|
||
|
|
*/
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 1\n"));
|
||
|
|
|
||
|
|
status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS1,
|
||
|
|
table_index, start_node);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* AML Parse, pass 2
|
||
|
|
*
|
||
|
|
* In this pass, we resolve forward references and other things
|
||
|
|
* that could not be completed during the first pass.
|
||
|
|
* Another complete parse of the AML is performed, but the
|
||
|
|
* overhead of this is compensated for by the fact that the
|
||
|
|
* parse objects are all cached.
|
||
|
|
*/
|
||
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Start pass 2\n"));
|
||
|
|
status = acpi_ns_one_complete_parse(ACPI_IMODE_LOAD_PASS2,
|
||
|
|
table_index, start_node);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|