0c9938cc75
Implemented support to ignore an attempt to install/load a particular ACPI table more than once. Apparently there exists BIOS code that repeatedly attempts to load the same SSDT upon certain events. Thanks to Venkatesh Pallipadi. Restructured the main interface to the AML parser in order to correctly handle all exceptional conditions. This will prevent leakage of the OwnerId resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some machines. Thanks to Alexey Starikovskiy. Support for "module level code" has been disabled in this version due to a number of issues that have appeared on various machines. The support can be enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem compilation. When the issues are fully resolved, the code will be enabled by default again. Modified the internal functions for debug print support to define the FunctionName parameter as a (const char *) for compatibility with compiler built-in macros such as __FUNCTION__, etc. Linted the entire ACPICA source tree for both 32-bit and 64-bit. Signed-off-by: Robert Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
282 lines
8.2 KiB
C
282 lines
8.2 KiB
C
/******************************************************************************
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*
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* Module Name: psxface - Parser external interfaces
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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/acdispat.h>
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#include <acpi/acinterp.h>
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#define _COMPONENT ACPI_PARSER
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ACPI_MODULE_NAME ("psxface")
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/* Local Prototypes */
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static acpi_status
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acpi_ps_execute_pass (
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struct acpi_parameter_info *info);
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static void
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acpi_ps_update_parameter_list (
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struct acpi_parameter_info *info,
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u16 action);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ps_execute_method
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*
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* PARAMETERS: Info - Method info block, contains:
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* Node - Method Node to execute
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* obj_desc - Method object
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* Parameters - List of parameters to pass to the method,
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* terminated by NULL. Params itself may be
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* NULL if no parameters are being passed.
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* return_object - Where to put method's return value (if
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* any). If NULL, no value is returned.
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* parameter_type - Type of Parameter list
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* return_object - Where to put method's return value (if
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* any). If NULL, no value is returned.
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* pass_number - Parse or execute pass
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute a control method
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*
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******************************************************************************/
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acpi_status
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acpi_ps_execute_method (
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struct acpi_parameter_info *info)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE ("ps_execute_method");
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/* Validate the Info and method Node */
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if (!info || !info->node) {
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return_ACPI_STATUS (AE_NULL_ENTRY);
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}
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/* Init for new method, wait on concurrency semaphore */
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status = acpi_ds_begin_method_execution (info->node, info->obj_desc, NULL);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/*
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* Get a new owner_id for objects created by this method. Namespace
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* objects (such as Operation Regions) can be created during the
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* first pass parse.
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*/
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status = acpi_ut_allocate_owner_id (&info->obj_desc->method.owner_id);
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/*
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* The caller "owns" the parameters, so give each one an extra
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* reference
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*/
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acpi_ps_update_parameter_list (info, REF_INCREMENT);
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/*
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* 1) Perform the first pass parse of the method to enter any
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* named objects that it creates into the namespace
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
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"**** Begin Method Parse **** Entry=%p obj=%p\n",
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info->node, info->obj_desc));
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info->pass_number = 1;
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status = acpi_ps_execute_pass (info);
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if (ACPI_FAILURE (status)) {
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goto cleanup;
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}
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/*
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* 2) Execute the method. Performs second pass parse simultaneously
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
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"**** Begin Method Execution **** Entry=%p obj=%p\n",
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info->node, info->obj_desc));
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info->pass_number = 3;
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status = acpi_ps_execute_pass (info);
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cleanup:
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if (info->obj_desc->method.owner_id) {
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acpi_ut_release_owner_id (&info->obj_desc->method.owner_id);
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}
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/* Take away the extra reference that we gave the parameters above */
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acpi_ps_update_parameter_list (info, REF_DECREMENT);
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/* Exit now if error above */
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/*
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* If the method has returned an object, signal this to the caller with
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* a control exception code
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*/
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if (info->return_object) {
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ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned obj_desc=%p\n",
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info->return_object));
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ACPI_DUMP_STACK_ENTRY (info->return_object);
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status = AE_CTRL_RETURN_VALUE;
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}
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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_ps_update_parameter_list
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*
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* PARAMETERS: Info - See struct acpi_parameter_info
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* (Used: parameter_type and Parameters)
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* Action - Add or Remove reference
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*
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* RETURN: Status
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*
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* DESCRIPTION: Update reference count on all method parameter objects
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*
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******************************************************************************/
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static void
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acpi_ps_update_parameter_list (
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struct acpi_parameter_info *info,
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u16 action)
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{
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acpi_native_uint i;
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if ((info->parameter_type == ACPI_PARAM_ARGS) &&
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(info->parameters)) {
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/* Update reference count for each parameter */
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for (i = 0; info->parameters[i]; i++) {
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/* Ignore errors, just do them all */
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(void) acpi_ut_update_object_reference (info->parameters[i], action);
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}
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ps_execute_pass
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*
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* PARAMETERS: Info - See struct acpi_parameter_info
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* (Used: pass_number, Node, and obj_desc)
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*
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* RETURN: Status
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*
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* DESCRIPTION: Single AML pass: Parse or Execute a control method
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*
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******************************************************************************/
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static acpi_status
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acpi_ps_execute_pass (
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struct acpi_parameter_info *info)
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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 ("ps_execute_pass");
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/* Create and init a Root Node */
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op = acpi_ps_create_scope_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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/* Create and initialize a new walk state */
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walk_state = acpi_ds_create_walk_state (
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info->obj_desc->method.owner_id, 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, info->node,
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info->obj_desc->method.aml_start,
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info->obj_desc->method.aml_length,
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info->pass_number == 1 ? NULL : info,
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info->pass_number);
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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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/* Parse the AML */
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status = acpi_ps_parse_aml (walk_state);
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/* Walk state was deleted by parse_aml */
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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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