2005-04-16 18:20:36 -04:00
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/******************************************************************************
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*
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* Module Name: exoparg6 - AML execution - opcodes with 6 arguments
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*
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*****************************************************************************/
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/*
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2010-01-22 06:07:36 -05:00
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* Copyright (C) 2000 - 2010, Intel Corp.
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2005-04-16 18:20:36 -04:00
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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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2009-01-09 00:30:03 -05:00
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#include "accommon.h"
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#include "acinterp.h"
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#include "acparser.h"
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#include "amlcode.h"
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2005-04-16 18:20:36 -04:00
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#define _COMPONENT ACPI_EXECUTER
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2005-08-05 00:44:28 -04:00
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ACPI_MODULE_NAME("exoparg6")
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2005-04-16 18:20:36 -04:00
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/*!
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* Naming convention for AML interpreter execution routines.
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*
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* The routines that begin execution of AML opcodes are named with a common
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* convention based upon the number of arguments, the number of target operands,
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* and whether or not a value is returned:
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*
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* AcpiExOpcode_xA_yT_zR
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*
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* Where:
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*
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* xA - ARGUMENTS: The number of arguments (input operands) that are
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* required for this opcode type (1 through 6 args).
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* yT - TARGETS: The number of targets (output operands) that are required
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* for this opcode type (0, 1, or 2 targets).
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* zR - RETURN VALUE: Indicates whether this opcode type returns a value
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* as the function return (0 or 1).
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*
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* The AcpiExOpcode* functions are called via the Dispatcher component with
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* fully resolved operands.
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!*/
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2005-04-18 22:49:35 -04:00
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/* Local prototypes */
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static u8
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2005-08-05 00:44:28 -04:00
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acpi_ex_do_match(u32 match_op,
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union acpi_operand_object *package_obj,
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union acpi_operand_object *match_obj);
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2005-04-16 18:20:36 -04:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_do_match
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*
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* PARAMETERS: match_op - The AML match operand
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* package_obj - Object from the target package
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* match_obj - Object to be matched
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*
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* RETURN: TRUE if the match is successful, FALSE otherwise
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*
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* DESCRIPTION: Implements the low-level match for the ASL Match operator.
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* Package elements will be implicitly converted to the type of
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* the match object (Integer/Buffer/String).
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*
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******************************************************************************/
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2005-04-18 22:49:35 -04:00
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static u8
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2005-08-05 00:44:28 -04:00
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acpi_ex_do_match(u32 match_op,
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union acpi_operand_object *package_obj,
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union acpi_operand_object *match_obj)
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2005-04-16 18:20:36 -04:00
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{
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2005-08-05 00:44:28 -04:00
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u8 logical_result = TRUE;
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acpi_status status;
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2005-04-16 18:20:36 -04:00
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/*
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* Note: Since the package_obj/match_obj ordering is opposite to that of
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* the standard logical operators, we have to reverse them when we call
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* do_logical_op in order to make the implicit conversion rules work
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* correctly. However, this means we have to flip the entire equation
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* also. A bit ugly perhaps, but overall, better than fussing the
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* parameters around at runtime, over and over again.
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*
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* Below, P[i] refers to the package element, M refers to the Match object.
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*/
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switch (match_op) {
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case MATCH_MTR:
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/* Always true */
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break;
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case MATCH_MEQ:
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/*
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* True if equal: (P[i] == M)
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* Change to: (M == P[i])
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*/
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2005-08-05 00:44:28 -04:00
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status =
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acpi_ex_do_logical_op(AML_LEQUAL_OP, match_obj, package_obj,
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&logical_result);
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if (ACPI_FAILURE(status)) {
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2005-04-16 18:20:36 -04:00
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return (FALSE);
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}
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break;
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case MATCH_MLE:
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/*
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* True if less than or equal: (P[i] <= M) (P[i] not_greater than M)
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* Change to: (M >= P[i]) (M not_less than P[i])
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*/
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2005-08-05 00:44:28 -04:00
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status =
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acpi_ex_do_logical_op(AML_LLESS_OP, match_obj, package_obj,
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&logical_result);
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if (ACPI_FAILURE(status)) {
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2005-04-16 18:20:36 -04:00
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return (FALSE);
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}
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2005-08-05 00:44:28 -04:00
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logical_result = (u8) ! logical_result;
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2005-04-16 18:20:36 -04:00
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break;
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case MATCH_MLT:
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/*
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* True if less than: (P[i] < M)
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* Change to: (M > P[i])
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*/
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2005-08-05 00:44:28 -04:00
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status =
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acpi_ex_do_logical_op(AML_LGREATER_OP, match_obj,
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package_obj, &logical_result);
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if (ACPI_FAILURE(status)) {
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2005-04-16 18:20:36 -04:00
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return (FALSE);
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}
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break;
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case MATCH_MGE:
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/*
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* True if greater than or equal: (P[i] >= M) (P[i] not_less than M)
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* Change to: (M <= P[i]) (M not_greater than P[i])
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*/
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2005-08-05 00:44:28 -04:00
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status =
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acpi_ex_do_logical_op(AML_LGREATER_OP, match_obj,
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package_obj, &logical_result);
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if (ACPI_FAILURE(status)) {
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2005-04-16 18:20:36 -04:00
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return (FALSE);
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}
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2005-08-05 00:44:28 -04:00
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logical_result = (u8) ! logical_result;
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2005-04-16 18:20:36 -04:00
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break;
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case MATCH_MGT:
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/*
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* True if greater than: (P[i] > M)
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* Change to: (M < P[i])
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*/
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2005-08-05 00:44:28 -04:00
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status =
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acpi_ex_do_logical_op(AML_LLESS_OP, match_obj, package_obj,
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&logical_result);
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if (ACPI_FAILURE(status)) {
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2005-04-16 18:20:36 -04:00
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return (FALSE);
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}
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break;
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default:
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/* Undefined */
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return (FALSE);
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}
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return logical_result;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_opcode_6A_0T_1R
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*
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* PARAMETERS: walk_state - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute opcode with 6 arguments, no target, and a return value
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*
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******************************************************************************/
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|
2005-08-05 00:44:28 -04:00
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acpi_status acpi_ex_opcode_6A_0T_1R(struct acpi_walk_state * walk_state)
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2005-04-16 18:20:36 -04:00
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{
|
2005-08-05 00:44:28 -04:00
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union acpi_operand_object **operand = &walk_state->operands[0];
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union acpi_operand_object *return_desc = NULL;
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acpi_status status = AE_OK;
|
2010-01-20 21:06:32 -05:00
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u64 index;
|
2005-08-05 00:44:28 -04:00
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union acpi_operand_object *this_element;
|
2005-04-16 18:20:36 -04:00
|
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|
ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-21 17:15:00 -04:00
|
|
|
ACPI_FUNCTION_TRACE_STR(ex_opcode_6A_0T_1R,
|
2005-08-05 00:44:28 -04:00
|
|
|
acpi_ps_get_opcode_name(walk_state->opcode));
|
2005-04-16 18:20:36 -04:00
|
|
|
|
|
|
|
switch (walk_state->opcode) {
|
|
|
|
case AML_MATCH_OP:
|
|
|
|
/*
|
|
|
|
* Match (search_pkg[0], match_op1[1], match_obj1[2],
|
|
|
|
* match_op2[3], match_obj2[4], start_index[5])
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* Validate both Match Term Operators (MTR, MEQ, etc.) */
|
|
|
|
|
|
|
|
if ((operand[1]->integer.value > MAX_MATCH_OPERATOR) ||
|
2005-08-05 00:44:28 -04:00
|
|
|
(operand[3]->integer.value > MAX_MATCH_OPERATOR)) {
|
2006-01-27 16:43:00 -05:00
|
|
|
ACPI_ERROR((AE_INFO, "Match operator out of range"));
|
2005-04-16 18:20:36 -04:00
|
|
|
status = AE_AML_OPERAND_VALUE;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get the package start_index, validate against the package length */
|
|
|
|
|
2005-04-18 22:49:35 -04:00
|
|
|
index = operand[5]->integer.value;
|
|
|
|
if (index >= operand[0]->package.count) {
|
2006-01-27 16:43:00 -05:00
|
|
|
ACPI_ERROR((AE_INFO,
|
2010-03-05 04:56:40 -05:00
|
|
|
"Index (0x%8.8X%8.8X) beyond package end (0x%X)",
|
2006-01-27 16:43:00 -05:00
|
|
|
ACPI_FORMAT_UINT64(index),
|
|
|
|
operand[0]->package.count));
|
2005-04-16 18:20:36 -04:00
|
|
|
status = AE_AML_PACKAGE_LIMIT;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Create an integer for the return value */
|
2010-01-20 21:06:32 -05:00
|
|
|
/* Default return value is ACPI_UINT64_MAX if no match found */
|
2005-04-16 18:20:36 -04:00
|
|
|
|
2010-01-20 21:06:32 -05:00
|
|
|
return_desc = acpi_ut_create_integer_object(ACPI_UINT64_MAX);
|
2005-04-16 18:20:36 -04:00
|
|
|
if (!return_desc) {
|
|
|
|
status = AE_NO_MEMORY;
|
|
|
|
goto cleanup;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Examine each element until a match is found. Both match conditions
|
|
|
|
* must be satisfied for a match to occur. Within the loop,
|
|
|
|
* "continue" signifies that the current element does not match
|
|
|
|
* and the next should be examined.
|
|
|
|
*
|
|
|
|
* Upon finding a match, the loop will terminate via "break" at
|
|
|
|
* the bottom. If it terminates "normally", match_value will be
|
2010-01-20 21:06:32 -05:00
|
|
|
* ACPI_UINT64_MAX (Ones) (its initial value) indicating that no
|
2005-04-16 18:20:36 -04:00
|
|
|
* match was found.
|
|
|
|
*/
|
2005-08-05 00:44:28 -04:00
|
|
|
for (; index < operand[0]->package.count; index++) {
|
2006-10-02 00:00:00 -04:00
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
/* Get the current package element */
|
|
|
|
|
|
|
|
this_element = operand[0]->package.elements[index];
|
|
|
|
|
|
|
|
/* Treat any uninitialized (NULL) elements as non-matching */
|
|
|
|
|
|
|
|
if (!this_element) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Both match conditions must be satisfied. Execution of a continue
|
|
|
|
* (proceed to next iteration of enclosing for loop) signifies a
|
|
|
|
* non-match.
|
|
|
|
*/
|
2005-08-05 00:44:28 -04:00
|
|
|
if (!acpi_ex_do_match((u32) operand[1]->integer.value,
|
|
|
|
this_element, operand[2])) {
|
2005-04-16 18:20:36 -04:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2005-08-05 00:44:28 -04:00
|
|
|
if (!acpi_ex_do_match((u32) operand[3]->integer.value,
|
|
|
|
this_element, operand[4])) {
|
2005-04-16 18:20:36 -04:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Match found: Index is the return value */
|
|
|
|
|
|
|
|
return_desc->integer.value = index;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AML_LOAD_TABLE_OP:
|
|
|
|
|
2005-08-05 00:44:28 -04:00
|
|
|
status = acpi_ex_load_table_op(walk_state, &return_desc);
|
2005-04-16 18:20:36 -04:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
2010-03-05 04:56:40 -05:00
|
|
|
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
|
2006-01-27 16:43:00 -05:00
|
|
|
walk_state->opcode));
|
2005-04-16 18:20:36 -04:00
|
|
|
status = AE_AML_BAD_OPCODE;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
2005-08-05 00:44:28 -04:00
|
|
|
cleanup:
|
2005-04-16 18:20:36 -04:00
|
|
|
|
|
|
|
/* Delete return object on error */
|
|
|
|
|
2005-08-05 00:44:28 -04:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
acpi_ut_remove_reference(return_desc);
|
2005-04-16 18:20:36 -04:00
|
|
|
}
|
|
|
|
|
2008-04-10 11:06:37 -04:00
|
|
|
/* Save return object on success */
|
|
|
|
|
|
|
|
else {
|
|
|
|
walk_state->result_obj = return_desc;
|
|
|
|
}
|
|
|
|
|
2005-08-05 00:44:28 -04:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 18:20:36 -04:00
|
|
|
}
|