diff options
Diffstat (limited to 'drivers/acpi/acpica/nsparse.c')
| -rw-r--r-- | drivers/acpi/acpica/nsparse.c | 128 |
1 files changed, 44 insertions, 84 deletions
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c index 2fc33a5203f4..959e6379bc4c 100644 --- a/drivers/acpi/acpica/nsparse.c +++ b/drivers/acpi/acpica/nsparse.c @@ -1,45 +1,11 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: nsparse - namespace interface to AML parser * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2017, 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. + * Copyright (C) 2000 - 2025, Intel Corp. * - * 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" @@ -61,8 +27,17 @@ ACPI_MODULE_NAME("nsparse") * * RETURN: Status * - * DESCRIPTION: Load ACPI/AML table by executing the entire table as a - * term_list. + * DESCRIPTION: Load ACPI/AML table by executing the entire table as a single + * large control method. + * + * NOTE: The point of this is to execute any module-level code in-place + * as the table is parsed. Some AML code depends on this behavior. + * + * It is a run-time option at this time, but will eventually become + * the default. + * + * Note: This causes the table to only have a single-pass parse. + * However, this is compatible with other ACPI implementations. * ******************************************************************************/ acpi_status @@ -112,8 +87,10 @@ acpi_ns_execute_table(u32 table_index, struct acpi_namespace_node *start_node) goto cleanup; } - ACPI_DEBUG_PRINT((ACPI_DB_PARSE, - "Create table code block: %p\n", method_obj)); + ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE, + "%s: Create table pseudo-method for [%4.4s] @%p, method %p\n", + ACPI_GET_FUNCTION_NAME, table->signature, table, + method_obj)); method_obj->method.aml_start = aml_start; method_obj->method.aml_length = aml_length; @@ -130,8 +107,20 @@ acpi_ns_execute_table(u32 table_index, struct acpi_namespace_node *start_node) goto cleanup; } + /* Optional object evaluation log */ + + ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION, + "%-26s: (Definition Block level)\n", + "Module-level evaluation")); + status = acpi_ps_execute_table(info); + /* Optional object evaluation log */ + + ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION, + "%-26s: (Definition Block level)\n", + "Module-level complete")); + cleanup: if (info) { ACPI_FREE(info->full_pathname); @@ -214,7 +203,7 @@ acpi_ns_one_complete_parse(u32 pass_number, /* Found OSDT table, enable the namespace override feature */ - if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) && + if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_OSDT) && pass_number == ACPI_IMODE_LOAD_PASS1) { walk_state->namespace_override = TRUE; } @@ -264,48 +253,19 @@ acpi_ns_parse_table(u32 table_index, struct acpi_namespace_node *start_node) 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); - } - } + /* + * Executes the AML table as one large control method. + * The point of this is to execute any module-level code in-place + * as the table is parsed. Some AML code depends on this behavior. + * + * Note: This causes the table to only have a single-pass parse. + * However, this is compatible with other ACPI implementations. + */ + ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE, + "%s: **** Start table execution pass\n", + ACPI_GET_FUNCTION_NAME)); + + status = acpi_ns_execute_table(table_index, start_node); return_ACPI_STATUS(status); } |