2005-04-16 22:20:36 +00:00
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/******************************************************************************
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*
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* Module Name: exresnte - AML Interpreter object resolution
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*
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*****************************************************************************/
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/*
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2008-04-24 03:00:13 +00:00
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* Copyright (C) 2000 - 2008, Intel Corp.
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2005-04-16 22:20:36 +00:00
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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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#include <acpi/acdispat.h>
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#include <acpi/acinterp.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acparser.h>
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#include <acpi/amlcode.h>
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#define _COMPONENT ACPI_EXECUTER
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2005-08-05 04:44:28 +00:00
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ACPI_MODULE_NAME("exresnte")
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2005-04-16 22:20:36 +00:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_resolve_node_to_value
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*
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* PARAMETERS: object_ptr - Pointer to a location that contains
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* a pointer to a NS node, and will receive a
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* pointer to the resolved object.
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* walk_state - Current state. Valid only if executing AML
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* code. NULL if simply resolving an object
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*
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* RETURN: Status
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*
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* DESCRIPTION: Resolve a Namespace node to a valued object
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*
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* Note: for some of the data types, the pointer attached to the Node
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* can be either a pointer to an actual internal object or a pointer into the
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* AML stream itself. These types are currently:
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*
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* ACPI_TYPE_INTEGER
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* ACPI_TYPE_STRING
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* ACPI_TYPE_BUFFER
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* ACPI_TYPE_MUTEX
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* ACPI_TYPE_PACKAGE
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*
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******************************************************************************/
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acpi_status
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2005-08-05 04:44:28 +00:00
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acpi_ex_resolve_node_to_value(struct acpi_namespace_node **object_ptr,
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struct acpi_walk_state *walk_state)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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acpi_status status = AE_OK;
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union acpi_operand_object *source_desc;
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union acpi_operand_object *obj_desc = NULL;
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struct acpi_namespace_node *node;
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acpi_object_type entry_type;
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2005-04-16 22:20:36 +00:00
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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 21:15:00 +00:00
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ACPI_FUNCTION_TRACE(ex_resolve_node_to_value);
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2005-04-16 22:20:36 +00:00
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/*
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* The stack pointer points to a struct acpi_namespace_node (Node). Get the
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* object that is attached to the Node.
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*/
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2005-08-05 04:44:28 +00:00
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node = *object_ptr;
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source_desc = acpi_ns_get_attached_object(node);
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entry_type = acpi_ns_get_type((acpi_handle) node);
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2005-04-16 22:20:36 +00:00
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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 21:15:00 +00:00
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Entry=%p SourceDesc=%p [%s]\n",
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2005-08-05 04:44:28 +00:00
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node, source_desc,
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acpi_ut_get_type_name(entry_type)));
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2005-04-16 22:20:36 +00:00
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if ((entry_type == ACPI_TYPE_LOCAL_ALIAS) ||
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2005-08-05 04:44:28 +00:00
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(entry_type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
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2006-10-02 04:00:00 +00:00
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2005-04-16 22:20:36 +00:00
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/* There is always exactly one level of indirection */
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2005-08-05 04:44:28 +00:00
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node = ACPI_CAST_PTR(struct acpi_namespace_node, node->object);
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source_desc = acpi_ns_get_attached_object(node);
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entry_type = acpi_ns_get_type((acpi_handle) node);
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2005-04-16 22:20:36 +00:00
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*object_ptr = node;
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}
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/*
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* Several object types require no further processing:
|
2006-06-08 20:29:00 +00:00
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* 1) Device/Thermal objects don't have a "real" subobject, return the Node
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2005-04-16 22:20:36 +00:00
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* 2) Method locals and arguments have a pseudo-Node
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2008-04-10 15:06:40 +00:00
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* 3) 10/2007: Added method type to assist with Package construction.
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2005-04-16 22:20:36 +00:00
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*/
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2006-06-08 20:29:00 +00:00
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if ((entry_type == ACPI_TYPE_DEVICE) ||
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(entry_type == ACPI_TYPE_THERMAL) ||
|
2008-04-10 15:06:40 +00:00
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(entry_type == ACPI_TYPE_METHOD) ||
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2005-08-05 04:44:28 +00:00
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(node->flags & (ANOBJ_METHOD_ARG | ANOBJ_METHOD_LOCAL))) {
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return_ACPI_STATUS(AE_OK);
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2005-04-16 22:20:36 +00:00
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}
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if (!source_desc) {
|
2006-01-27 21:43:00 +00:00
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ACPI_ERROR((AE_INFO, "No object attached to node %p", node));
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2005-08-05 04:44:28 +00:00
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return_ACPI_STATUS(AE_AML_NO_OPERAND);
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2005-04-16 22:20:36 +00:00
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|
}
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|
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/*
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|
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|
* Action is based on the type of the Node, which indicates the type
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* of the attached object or pointer
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|
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*/
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|
switch (entry_type) {
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|
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case ACPI_TYPE_PACKAGE:
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|
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|
2005-08-05 04:44:28 +00:00
|
|
|
if (ACPI_GET_OBJECT_TYPE(source_desc) != ACPI_TYPE_PACKAGE) {
|
2006-01-27 21:43:00 +00:00
|
|
|
ACPI_ERROR((AE_INFO, "Object not a Package, type %s",
|
|
|
|
acpi_ut_get_object_type_name(source_desc)));
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
status = acpi_ds_get_package_arguments(source_desc);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
2006-10-02 04:00:00 +00:00
|
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|
2005-04-16 22:20:36 +00:00
|
|
|
/* Return an additional reference to the object */
|
|
|
|
|
|
|
|
obj_desc = source_desc;
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ut_add_reference(obj_desc);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
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|
break;
|
|
|
|
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
if (ACPI_GET_OBJECT_TYPE(source_desc) != ACPI_TYPE_BUFFER) {
|
2006-01-27 21:43:00 +00:00
|
|
|
ACPI_ERROR((AE_INFO, "Object not a Buffer, type %s",
|
|
|
|
acpi_ut_get_object_type_name(source_desc)));
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
status = acpi_ds_get_buffer_arguments(source_desc);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
2006-10-02 04:00:00 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* Return an additional reference to the object */
|
|
|
|
|
|
|
|
obj_desc = source_desc;
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ut_add_reference(obj_desc);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
if (ACPI_GET_OBJECT_TYPE(source_desc) != ACPI_TYPE_STRING) {
|
2006-01-27 21:43:00 +00:00
|
|
|
ACPI_ERROR((AE_INFO, "Object not a String, type %s",
|
|
|
|
acpi_ut_get_object_type_name(source_desc)));
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
|
|
|
|
obj_desc = source_desc;
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ut_add_reference(obj_desc);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
if (ACPI_GET_OBJECT_TYPE(source_desc) != ACPI_TYPE_INTEGER) {
|
2006-01-27 21:43:00 +00:00
|
|
|
ACPI_ERROR((AE_INFO, "Object not a Integer, type %s",
|
|
|
|
acpi_ut_get_object_type_name(source_desc)));
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
|
|
|
|
obj_desc = source_desc;
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ut_add_reference(obj_desc);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
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 21:15:00 +00:00
|
|
|
"FieldRead Node=%p SourceDesc=%p Type=%X\n",
|
2005-08-05 04:44:28 +00:00
|
|
|
node, source_desc, entry_type));
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
status =
|
|
|
|
acpi_ex_read_data_from_field(walk_state, source_desc,
|
|
|
|
&obj_desc);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
/* For these objects, just return the object attached to the Node */
|
2005-04-19 02:49:35 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
case ACPI_TYPE_MUTEX:
|
|
|
|
case ACPI_TYPE_POWER:
|
|
|
|
case ACPI_TYPE_PROCESSOR:
|
|
|
|
case ACPI_TYPE_EVENT:
|
|
|
|
case ACPI_TYPE_REGION:
|
|
|
|
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
|
|
|
|
obj_desc = source_desc;
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ut_add_reference(obj_desc);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
/* TYPE_ANY is untyped, and thus there is no object associated with it */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
case ACPI_TYPE_ANY:
|
|
|
|
|
2006-01-27 21:43:00 +00:00
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
"Untyped entry %p, no attached object!", node));
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE); /* Cannot be AE_TYPE */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
|
|
|
|
|
|
switch (source_desc->reference.opcode) {
|
2008-04-10 15:06:41 +00:00
|
|
|
case AML_LOAD_OP: /* This is a ddb_handle */
|
|
|
|
case AML_REF_OF_OP:
|
|
|
|
case AML_INDEX_OP:
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* Return an additional reference to the object */
|
|
|
|
|
|
|
|
obj_desc = source_desc;
|
2005-08-05 04:44:28 +00:00
|
|
|
acpi_ut_add_reference(obj_desc);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/* No named references are allowed here */
|
|
|
|
|
2006-01-27 21:43:00 +00:00
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
"Unsupported Reference opcode %X (%s)",
|
|
|
|
source_desc->reference.opcode,
|
|
|
|
acpi_ps_get_opcode_name(source_desc->
|
|
|
|
reference.opcode)));
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
2005-04-19 02:49:35 +00:00
|
|
|
/* Default case is for unknown types */
|
|
|
|
|
2006-01-27 21:43:00 +00:00
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
"Node %p - Unknown object type %X",
|
|
|
|
node, entry_type));
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
} /* switch (entry_type) */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-04-19 02:49:35 +00:00
|
|
|
/* Return the object descriptor */
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-08-05 04:44:28 +00:00
|
|
|
*object_ptr = (void *)obj_desc;
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|