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62eb935b77
ACPICA commit afb52611dbe7403551f93504d3798534f5c343f4 This patch cleans up the code of assigning the AML address to the union acpi_operand_object. The idea behind this cleanup is: The AML address of the union acpi_operand_object should always be determined at the point where the object is encountered. It should be started from the first byte of the object. For example, the opcode of the object, the name string of the user_term object, or the first byte of the packaged object (where a pkg_length is prefixed). So it's not cleaner to have it assigned here and there in the entire ACPICA source tree. There are some special cases for the internal opcodes, before cleaning up the internal opcodes, we should also determine the rules for the AML addresses of the internal opcodes: 1. INT_NAMEPATH_OP: the address of the first byte for the name_string. 2. INT_METHODCALL_OP: the address of the first byte for the name_string. 3. INT_BYTELIST_OP: the address of the first byte for the byte_data list. 4. INT_EVAL_SUBTREE_OP: the address of the first byte for the Region/Package/Buffer/bank_field/Field arguments. 5. INT_NAMEDFIELD_OP: the address to the name_seg. 6. INT_RESERVEDFIELD_OP: the address to the 0x00 prefix. 7. INT_ACCESSFIELD_OP: the address to the 0x01 prefix. 8. INT_CONNECTION_OP: the address to the 0x02 prefix. 9: INT_EXTACCESSFIELD_OP: the address to the 0x03 prefix. 10.INT_RETURN_VALUE_OP: the address of the replaced operand. 11.computational_data: the address to the Byte/Word/Dword/Qword/string_prefix. Before cleaning up the internal root scope of the aml_walk, turning it into the term_list, we need to remember the aml_start address as the "Aml" attribute for the union acpi_operand_object created by acpi_ps_create_scope_op(). Finally, we can delete some redundant AML address assignment in psloop.c. Link: https://github.com/acpica/acpica/commit/afb52611 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
580 lines
16 KiB
C
580 lines
16 KiB
C
/******************************************************************************
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*
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* Module Name: dswload - Dispatcher first pass namespace load callbacks
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2015, Intel Corp.
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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 "accommon.h"
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#include "acparser.h"
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#include "amlcode.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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#ifdef ACPI_ASL_COMPILER
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#include "acdisasm.h"
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#endif
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME("dswload")
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_init_callbacks
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*
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* PARAMETERS: walk_state - Current state of the parse tree walk
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* pass_number - 1, 2, or 3
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*
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* RETURN: Status
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*
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* DESCRIPTION: Init walk state callbacks
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*
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******************************************************************************/
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acpi_status
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acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number)
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{
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switch (pass_number) {
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case 0:
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/* Parse only - caller will setup callbacks */
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walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
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ACPI_PARSE_DELETE_TREE | ACPI_PARSE_DISASSEMBLE;
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walk_state->descending_callback = NULL;
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walk_state->ascending_callback = NULL;
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break;
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case 1:
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/* Load pass 1 */
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walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
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ACPI_PARSE_DELETE_TREE;
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walk_state->descending_callback = acpi_ds_load1_begin_op;
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walk_state->ascending_callback = acpi_ds_load1_end_op;
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break;
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case 2:
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/* Load pass 2 */
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walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
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ACPI_PARSE_DELETE_TREE;
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walk_state->descending_callback = acpi_ds_load2_begin_op;
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walk_state->ascending_callback = acpi_ds_load2_end_op;
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break;
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case 3:
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/* Execution pass */
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#ifndef ACPI_NO_METHOD_EXECUTION
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walk_state->parse_flags |= ACPI_PARSE_EXECUTE |
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ACPI_PARSE_DELETE_TREE;
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walk_state->descending_callback = acpi_ds_exec_begin_op;
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walk_state->ascending_callback = acpi_ds_exec_end_op;
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#endif
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break;
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default:
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return (AE_BAD_PARAMETER);
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}
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_load1_begin_op
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*
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* PARAMETERS: walk_state - Current state of the parse tree walk
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* out_op - Where to return op if a new one is created
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*
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* RETURN: Status
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*
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* DESCRIPTION: Descending callback used during the loading of ACPI tables.
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*
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******************************************************************************/
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acpi_status
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acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
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union acpi_parse_object ** out_op)
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{
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union acpi_parse_object *op;
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struct acpi_namespace_node *node;
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acpi_status status;
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acpi_object_type object_type;
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char *path;
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u32 flags;
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ACPI_FUNCTION_TRACE(ds_load1_begin_op);
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op = walk_state->op;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
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walk_state));
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/* We are only interested in opcodes that have an associated name */
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if (op) {
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if (!(walk_state->op_info->flags & AML_NAMED)) {
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*out_op = op;
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return_ACPI_STATUS(AE_OK);
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}
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/* Check if this object has already been installed in the namespace */
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if (op->common.node) {
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*out_op = op;
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return_ACPI_STATUS(AE_OK);
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}
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}
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path = acpi_ps_get_next_namestring(&walk_state->parser_state);
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/* Map the raw opcode into an internal object type */
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object_type = walk_state->op_info->object_type;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"State=%p Op=%p [%s]\n", walk_state, op,
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acpi_ut_get_type_name(object_type)));
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switch (walk_state->opcode) {
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case AML_SCOPE_OP:
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/*
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* The target name of the Scope() operator must exist at this point so
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* that we can actually open the scope to enter new names underneath it.
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* Allow search-to-root for single namesegs.
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*/
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status =
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acpi_ns_lookup(walk_state->scope_info, path, object_type,
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ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
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walk_state, &(node));
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#ifdef ACPI_ASL_COMPILER
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if (status == AE_NOT_FOUND) {
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/*
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* Table disassembly:
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* Target of Scope() not found. Generate an External for it, and
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* insert the name into the namespace.
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*/
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acpi_dm_add_op_to_external_list(op, path,
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ACPI_TYPE_DEVICE, 0, 0);
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status =
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acpi_ns_lookup(walk_state->scope_info, path,
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object_type, ACPI_IMODE_LOAD_PASS1,
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ACPI_NS_SEARCH_PARENT, walk_state,
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&node);
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}
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#endif
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if (ACPI_FAILURE(status)) {
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ACPI_ERROR_NAMESPACE(path, status);
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return_ACPI_STATUS(status);
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}
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/*
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* Check to make sure that the target is
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* one of the opcodes that actually opens a scope
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*/
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switch (node->type) {
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case ACPI_TYPE_ANY:
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case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
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case ACPI_TYPE_DEVICE:
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case ACPI_TYPE_POWER:
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case ACPI_TYPE_PROCESSOR:
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case ACPI_TYPE_THERMAL:
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/* These are acceptable types */
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break;
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case ACPI_TYPE_INTEGER:
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case ACPI_TYPE_STRING:
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case ACPI_TYPE_BUFFER:
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/*
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* These types we will allow, but we will change the type.
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* This enables some existing code of the form:
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*
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* Name (DEB, 0)
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* Scope (DEB) { ... }
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*
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* Note: silently change the type here. On the second pass,
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* we will report a warning
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*/
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ACPI_DEBUG_PRINT((ACPI_DB_INFO,
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"Type override - [%4.4s] had invalid type (%s) "
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"for Scope operator, changed to type ANY\n",
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acpi_ut_get_node_name(node),
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acpi_ut_get_type_name(node->type)));
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node->type = ACPI_TYPE_ANY;
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walk_state->scope_info->common.value = ACPI_TYPE_ANY;
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break;
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case ACPI_TYPE_METHOD:
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/*
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* Allow scope change to root during execution of module-level
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* code. Root is typed METHOD during this time.
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*/
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if ((node == acpi_gbl_root_node) &&
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(walk_state->
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parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
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break;
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}
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/*lint -fallthrough */
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default:
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/* All other types are an error */
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ACPI_ERROR((AE_INFO,
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"Invalid type (%s) for target of "
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"Scope operator [%4.4s] (Cannot override)",
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acpi_ut_get_type_name(node->type),
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acpi_ut_get_node_name(node)));
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return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
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}
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break;
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default:
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/*
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* For all other named opcodes, we will enter the name into
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* the namespace.
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*
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* Setup the search flags.
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* Since we are entering a name into the namespace, we do not want to
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* enable the search-to-root upsearch.
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*
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* There are only two conditions where it is acceptable that the name
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* already exists:
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* 1) the Scope() operator can reopen a scoping object that was
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* previously defined (Scope, Method, Device, etc.)
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* 2) Whenever we are parsing a deferred opcode (op_region, Buffer,
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* buffer_field, or Package), the name of the object is already
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* in the namespace.
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*/
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if (walk_state->deferred_node) {
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/* This name is already in the namespace, get the node */
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node = walk_state->deferred_node;
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status = AE_OK;
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break;
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}
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/*
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* If we are executing a method, do not create any namespace objects
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* during the load phase, only during execution.
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*/
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if (walk_state->method_node) {
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node = NULL;
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status = AE_OK;
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break;
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}
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flags = ACPI_NS_NO_UPSEARCH;
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if ((walk_state->opcode != AML_SCOPE_OP) &&
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(!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) {
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if (walk_state->namespace_override) {
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flags |= ACPI_NS_OVERRIDE_IF_FOUND;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"[%s] Override allowed\n",
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acpi_ut_get_type_name
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(object_type)));
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} else {
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flags |= ACPI_NS_ERROR_IF_FOUND;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"[%s] Cannot already exist\n",
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acpi_ut_get_type_name
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(object_type)));
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}
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} else {
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"[%s] Both Find or Create allowed\n",
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acpi_ut_get_type_name(object_type)));
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}
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/*
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* Enter the named type into the internal namespace. We enter the name
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* as we go downward in the parse tree. Any necessary subobjects that
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* involve arguments to the opcode must be created as we go back up the
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* parse tree later.
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*/
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status =
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acpi_ns_lookup(walk_state->scope_info, path, object_type,
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ACPI_IMODE_LOAD_PASS1, flags, walk_state,
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&node);
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if (ACPI_FAILURE(status)) {
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if (status == AE_ALREADY_EXISTS) {
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/* The name already exists in this scope */
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if (node->flags & ANOBJ_IS_EXTERNAL) {
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/*
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* Allow one create on an object or segment that was
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* previously declared External
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*/
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node->flags &= ~ANOBJ_IS_EXTERNAL;
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node->type = (u8) object_type;
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/* Just retyped a node, probably will need to open a scope */
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if (acpi_ns_opens_scope(object_type)) {
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status =
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acpi_ds_scope_stack_push
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(node, object_type,
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walk_state);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS
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(status);
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}
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}
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status = AE_OK;
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}
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}
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if (ACPI_FAILURE(status)) {
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ACPI_ERROR_NAMESPACE(path, status);
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return_ACPI_STATUS(status);
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}
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}
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break;
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}
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/* Common exit */
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if (!op) {
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/* Create a new op */
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op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
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if (!op) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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}
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/* Initialize the op */
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#if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY))
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op->named.path = ACPI_CAST_PTR(u8, path);
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#endif
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if (node) {
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/*
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* Put the Node in the "op" object that the parser uses, so we
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* can get it again quickly when this scope is closed
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*/
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op->common.node = node;
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op->named.name = node->name.integer;
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}
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acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state),
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op);
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*out_op = 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_load1_end_op
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*
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* PARAMETERS: walk_state - Current state of the parse tree walk
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*
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* RETURN: Status
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*
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* DESCRIPTION: Ascending callback used during the loading of the namespace,
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* both control methods and everything else.
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*
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******************************************************************************/
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acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
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{
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union acpi_parse_object *op;
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acpi_object_type object_type;
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(ds_load1_end_op);
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op = walk_state->op;
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
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walk_state));
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/* We are only interested in opcodes that have an associated name */
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if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Get the object type to determine if we should pop the scope */
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object_type = walk_state->op_info->object_type;
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#ifndef ACPI_NO_METHOD_EXECUTION
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if (walk_state->op_info->flags & AML_FIELD) {
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/*
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* If we are executing a method, do not create any namespace objects
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* during the load phase, only during execution.
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*/
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if (!walk_state->method_node) {
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if (walk_state->opcode == AML_FIELD_OP ||
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walk_state->opcode == AML_BANK_FIELD_OP ||
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walk_state->opcode == AML_INDEX_FIELD_OP) {
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status =
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acpi_ds_init_field_objects(op, walk_state);
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}
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}
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return_ACPI_STATUS(status);
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}
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/*
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* If we are executing a method, do not create any namespace objects
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* during the load phase, only during execution.
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*/
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if (!walk_state->method_node) {
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if (op->common.aml_opcode == AML_REGION_OP) {
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status =
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acpi_ex_create_region(op->named.data,
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op->named.length,
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(acpi_adr_space_type) ((op->
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common.
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value.
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arg)->
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common.
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value.
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integer),
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walk_state);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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} else if (op->common.aml_opcode == AML_DATA_REGION_OP) {
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status =
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acpi_ex_create_region(op->named.data,
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op->named.length,
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ACPI_ADR_SPACE_DATA_TABLE,
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walk_state);
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if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (op->common.aml_opcode == AML_NAME_OP) {
|
|
|
|
/* For Name opcode, get the object type from the argument */
|
|
|
|
if (op->common.value.arg) {
|
|
object_type = (acpi_ps_get_opcode_info((op->common.
|
|
value.arg)->
|
|
common.
|
|
aml_opcode))->
|
|
object_type;
|
|
|
|
/* Set node type if we have a namespace node */
|
|
|
|
if (op->common.node) {
|
|
op->common.node->type = (u8) object_type;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we are executing a method, do not create any namespace objects
|
|
* during the load phase, only during execution.
|
|
*/
|
|
if (!walk_state->method_node) {
|
|
if (op->common.aml_opcode == AML_METHOD_OP) {
|
|
/*
|
|
* method_op pkg_length name_string method_flags term_list
|
|
*
|
|
* Note: We must create the method node/object pair as soon as we
|
|
* see the method declaration. This allows later pass1 parsing
|
|
* of invocations of the method (need to know the number of
|
|
* arguments.)
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"LOADING-Method: State=%p Op=%p NamedObj=%p\n",
|
|
walk_state, op, op->named.node));
|
|
|
|
if (!acpi_ns_get_attached_object(op->named.node)) {
|
|
walk_state->operands[0] =
|
|
ACPI_CAST_PTR(void, op->named.node);
|
|
walk_state->num_operands = 1;
|
|
|
|
status =
|
|
acpi_ds_create_operands(walk_state,
|
|
op->common.value.
|
|
arg);
|
|
if (ACPI_SUCCESS(status)) {
|
|
status =
|
|
acpi_ex_create_method(op->named.
|
|
data,
|
|
op->named.
|
|
length,
|
|
walk_state);
|
|
}
|
|
|
|
walk_state->operands[0] = NULL;
|
|
walk_state->num_operands = 0;
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Pop the scope stack (only if loading a table) */
|
|
|
|
if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
"(%s): Popping scope for Op %p\n",
|
|
acpi_ut_get_type_name(object_type), op));
|
|
|
|
status = acpi_ds_scope_stack_pop(walk_state);
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|