b229cf92ee
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>
391 lines
11 KiB
C
391 lines
11 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 - 2006, 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 void acpi_ps_start_trace(struct acpi_parameter_info *info);
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static void acpi_ps_stop_trace(struct acpi_parameter_info *info);
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static acpi_status acpi_ps_execute_pass(struct acpi_parameter_info *info);
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static void
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acpi_ps_update_parameter_list(struct acpi_parameter_info *info, u16 action);
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/*******************************************************************************
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*
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* FUNCTION: acpi_debug_trace
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*
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* PARAMETERS: method_name - Valid ACPI name string
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* debug_level - Optional level mask. 0 to use default
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* debug_layer - Optional layer mask. 0 to use default
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* Flags - bit 1: one shot(1) or persistent(0)
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*
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* RETURN: Status
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*
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* DESCRIPTION: External interface to enable debug tracing during control
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* method execution
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*
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******************************************************************************/
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acpi_status
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acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags)
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{
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acpi_status status;
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status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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/* TBDs: Validate name, allow full path or just nameseg */
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acpi_gbl_trace_method_name = *ACPI_CAST_PTR(u32, name);
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acpi_gbl_trace_flags = flags;
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if (debug_level) {
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acpi_gbl_trace_dbg_level = debug_level;
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}
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if (debug_layer) {
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acpi_gbl_trace_dbg_layer = debug_layer;
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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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_ps_start_trace
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*
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* PARAMETERS: Info - Method info struct
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*
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* RETURN: None
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*
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* DESCRIPTION: Start control method execution trace
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*
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******************************************************************************/
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static void acpi_ps_start_trace(struct acpi_parameter_info *info)
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{
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acpi_status status;
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ACPI_FUNCTION_ENTRY();
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status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE(status)) {
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return;
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}
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if ((!acpi_gbl_trace_method_name) ||
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(acpi_gbl_trace_method_name != info->node->name.integer)) {
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goto exit;
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}
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acpi_gbl_original_dbg_level = acpi_dbg_level;
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acpi_gbl_original_dbg_layer = acpi_dbg_layer;
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acpi_dbg_level = 0x00FFFFFF;
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acpi_dbg_layer = ACPI_UINT32_MAX;
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if (acpi_gbl_trace_dbg_level) {
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acpi_dbg_level = acpi_gbl_trace_dbg_level;
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}
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if (acpi_gbl_trace_dbg_layer) {
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acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
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}
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exit:
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(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ps_stop_trace
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*
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* PARAMETERS: Info - Method info struct
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*
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* RETURN: None
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*
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* DESCRIPTION: Stop control method execution trace
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*
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******************************************************************************/
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static void acpi_ps_stop_trace(struct acpi_parameter_info *info)
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{
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acpi_status status;
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ACPI_FUNCTION_ENTRY();
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status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
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if (ACPI_FAILURE(status)) {
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return;
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}
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if ((!acpi_gbl_trace_method_name) ||
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(acpi_gbl_trace_method_name != info->node->name.integer)) {
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goto exit;
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}
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/* Disable further tracing if type is one-shot */
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if (acpi_gbl_trace_flags & 1) {
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acpi_gbl_trace_method_name = 0;
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acpi_gbl_trace_dbg_level = 0;
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acpi_gbl_trace_dbg_layer = 0;
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}
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acpi_dbg_level = acpi_gbl_original_dbg_level;
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acpi_dbg_layer = acpi_gbl_original_dbg_layer;
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exit:
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(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
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}
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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 acpi_ps_execute_method(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 =
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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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* 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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/* Begin tracing if requested */
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acpi_ps_start_trace(info);
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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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/* End optional tracing */
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acpi_ps_stop_trace(info);
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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 ObjDesc=%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(struct acpi_parameter_info *info, 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) && (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->
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parameters[i],
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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 acpi_ps_execute_pass(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 =
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acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
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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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