2005-04-16 16:20:36 -06:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* Module Name: dsutils - Dispatcher utilities
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
/*
|
2012-01-11 22:27:23 -07:00
|
|
|
* Copyright (C) 2000 - 2012, Intel Corp.
|
2005-04-16 16:20:36 -06:00
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
|
|
* without modification.
|
|
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
|
|
* including a substantially similar Disclaimer requirement for further
|
|
|
|
* binary redistribution.
|
|
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
|
|
* of any contributors may be used to endorse or promote products derived
|
|
|
|
* from this software without specific prior written permission.
|
|
|
|
*
|
|
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
|
|
* Software Foundation.
|
|
|
|
*
|
|
|
|
* NO WARRANTY
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <acpi/acpi.h>
|
2009-01-08 22:30:03 -07:00
|
|
|
#include "accommon.h"
|
|
|
|
#include "acparser.h"
|
|
|
|
#include "amlcode.h"
|
|
|
|
#include "acdispat.h"
|
|
|
|
#include "acinterp.h"
|
|
|
|
#include "acnamesp.h"
|
|
|
|
#include "acdebug.h"
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
#define _COMPONENT ACPI_DISPATCHER
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_MODULE_NAME("dsutils")
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_clear_implicit_return
|
|
|
|
*
|
|
|
|
* PARAMETERS: walk_state - Current State
|
|
|
|
*
|
|
|
|
* RETURN: None.
|
|
|
|
*
|
2012-10-30 20:26:55 -06:00
|
|
|
* DESCRIPTION: Clear and remove a reference on an implicit return value. Used
|
2005-04-16 16:20:36 -06:00
|
|
|
* to delete "stale" return values (if enabled, the return value
|
|
|
|
* from every operator is saved at least momentarily, in case the
|
|
|
|
* parent method exits.)
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2005-08-04 22:44:28 -06:00
|
|
|
void acpi_ds_clear_implicit_return(struct acpi_walk_state *walk_state)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_NAME(ds_clear_implicit_return);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Slack must be enabled for this feature
|
|
|
|
*/
|
|
|
|
if (!acpi_gbl_enable_interpreter_slack) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (walk_state->implicit_return_obj) {
|
|
|
|
/*
|
|
|
|
* Delete any "stale" implicit return. However, in
|
|
|
|
* complex statements, the implicit return value can be
|
|
|
|
* bubbled up several levels.
|
|
|
|
*/
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
|
|
"Removing reference on stale implicit return obj %p\n",
|
|
|
|
walk_state->implicit_return_obj));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ut_remove_reference(walk_state->implicit_return_obj);
|
2005-04-16 16:20:36 -06:00
|
|
|
walk_state->implicit_return_obj = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_do_implicit_return
|
|
|
|
*
|
|
|
|
* PARAMETERS: return_desc - The return value
|
|
|
|
* walk_state - Current State
|
|
|
|
* add_reference - True if a reference should be added to the
|
|
|
|
* return object
|
|
|
|
*
|
|
|
|
* RETURN: TRUE if implicit return enabled, FALSE otherwise
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Implements the optional "implicit return". We save the result
|
|
|
|
* of every ASL operator and control method invocation in case the
|
2012-10-30 20:26:55 -06:00
|
|
|
* parent method exit. Before storing a new return value, we
|
2005-04-16 16:20:36 -06:00
|
|
|
* delete the previous return value.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
u8
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ds_do_implicit_return(union acpi_operand_object *return_desc,
|
|
|
|
struct acpi_walk_state *walk_state, u8 add_reference)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_NAME(ds_do_implicit_return);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Slack must be enabled for this feature, and we must
|
|
|
|
* have a valid return object
|
|
|
|
*/
|
2005-08-04 22:44:28 -06:00
|
|
|
if ((!acpi_gbl_enable_interpreter_slack) || (!return_desc)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
return (FALSE);
|
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
|
|
"Result %p will be implicitly returned; Prev=%p\n",
|
|
|
|
return_desc, walk_state->implicit_return_obj));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Delete any "stale" implicit return value first. However, in
|
|
|
|
* complex statements, the implicit return value can be
|
|
|
|
* bubbled up several levels, so we don't clear the value if it
|
|
|
|
* is the same as the return_desc.
|
|
|
|
*/
|
|
|
|
if (walk_state->implicit_return_obj) {
|
|
|
|
if (walk_state->implicit_return_obj == return_desc) {
|
|
|
|
return (TRUE);
|
|
|
|
}
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ds_clear_implicit_return(walk_state);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Save the implicit return value, add a reference if requested */
|
|
|
|
|
|
|
|
walk_state->implicit_return_obj = return_desc;
|
|
|
|
if (add_reference) {
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ut_add_reference(return_desc);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
return (TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_is_result_used
|
|
|
|
*
|
2012-07-11 19:40:10 -06:00
|
|
|
* PARAMETERS: op - Current Op
|
2005-04-16 16:20:36 -06:00
|
|
|
* walk_state - Current State
|
|
|
|
*
|
|
|
|
* RETURN: TRUE if result is used, FALSE otherwise
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Check if a result object will be used by the parent
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
u8
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ds_is_result_used(union acpi_parse_object * op,
|
|
|
|
struct acpi_walk_state * walk_state)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-08-04 22:44:28 -06:00
|
|
|
const struct acpi_opcode_info *parent_info;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_is_result_used, op);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Must have both an Op and a Result Object */
|
|
|
|
|
|
|
|
if (!op) {
|
2006-01-27 14:43:00 -07:00
|
|
|
ACPI_ERROR((AE_INFO, "Null Op"));
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-30 17:03:00 -06:00
|
|
|
return_UINT8(TRUE);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We know that this operator is not a
|
|
|
|
* Return() operator (would not come here.) The following code is the
|
|
|
|
* optional support for a so-called "implicit return". Some AML code
|
|
|
|
* assumes that the last value of the method is "implicitly" returned
|
|
|
|
* to the caller. Just save the last result as the return value.
|
|
|
|
* NOTE: this is optional because the ASL language does not actually
|
|
|
|
* support this behavior.
|
|
|
|
*/
|
2005-08-04 22:44:28 -06:00
|
|
|
(void)acpi_ds_do_implicit_return(walk_state->result_obj, walk_state,
|
|
|
|
TRUE);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Now determine if the parent will use the result
|
|
|
|
*
|
|
|
|
* If there is no parent, or the parent is a scope_op, we are executing
|
|
|
|
* at the method level. An executing method typically has no parent,
|
2012-10-30 20:26:55 -06:00
|
|
|
* since each method is parsed separately. A method invoked externally
|
2005-04-16 16:20:36 -06:00
|
|
|
* via execute_control_method has a scope_op as the parent.
|
|
|
|
*/
|
|
|
|
if ((!op->common.parent) ||
|
2005-08-04 22:44:28 -06:00
|
|
|
(op->common.parent->common.aml_opcode == AML_SCOPE_OP)) {
|
2006-10-01 22:00:00 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* No parent, the return value cannot possibly be used */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
|
|
"At Method level, result of [%s] not used\n",
|
|
|
|
acpi_ps_get_opcode_name(op->common.
|
|
|
|
aml_opcode)));
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-30 17:03:00 -06:00
|
|
|
return_UINT8(FALSE);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Get info on the parent. The root_op is AML_SCOPE */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
parent_info =
|
|
|
|
acpi_ps_get_opcode_info(op->common.parent->common.aml_opcode);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (parent_info->class == AML_CLASS_UNKNOWN) {
|
2006-01-27 14:43:00 -07:00
|
|
|
ACPI_ERROR((AE_INFO, "Unknown parent opcode Op=%p", op));
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-30 17:03:00 -06:00
|
|
|
return_UINT8(FALSE);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2012-10-30 20:26:55 -06:00
|
|
|
* Decide what to do with the result based on the parent. If
|
2005-04-16 16:20:36 -06:00
|
|
|
* the parent opcode will not use the result, delete the object.
|
|
|
|
* Otherwise leave it as is, it will be deleted when it is used
|
|
|
|
* as an operand later.
|
|
|
|
*/
|
|
|
|
switch (parent_info->class) {
|
|
|
|
case AML_CLASS_CONTROL:
|
|
|
|
|
|
|
|
switch (op->common.parent->common.aml_opcode) {
|
|
|
|
case AML_RETURN_OP:
|
|
|
|
|
|
|
|
/* Never delete the return value associated with a return opcode */
|
|
|
|
|
|
|
|
goto result_used;
|
|
|
|
|
|
|
|
case AML_IF_OP:
|
|
|
|
case AML_WHILE_OP:
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If we are executing the predicate AND this is the predicate op,
|
|
|
|
* we will use the return value
|
|
|
|
*/
|
2005-08-04 22:44:28 -06:00
|
|
|
if ((walk_state->control_state->common.state ==
|
|
|
|
ACPI_CONTROL_PREDICATE_EXECUTING)
|
|
|
|
&& (walk_state->control_state->control.
|
|
|
|
predicate_op == op)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
goto result_used;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/* Ignore other control opcodes */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The general control opcode returns no result */
|
|
|
|
|
|
|
|
goto result_not_used;
|
|
|
|
|
|
|
|
case AML_CLASS_CREATE:
|
|
|
|
|
|
|
|
/*
|
|
|
|
* These opcodes allow term_arg(s) as operands and therefore
|
2012-10-30 20:26:55 -06:00
|
|
|
* the operands can be method calls. The result is used.
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
|
|
|
goto result_used;
|
|
|
|
|
|
|
|
case AML_CLASS_NAMED_OBJECT:
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
if ((op->common.parent->common.aml_opcode == AML_REGION_OP) ||
|
|
|
|
(op->common.parent->common.aml_opcode == AML_DATA_REGION_OP)
|
|
|
|
|| (op->common.parent->common.aml_opcode == AML_PACKAGE_OP)
|
|
|
|
|| (op->common.parent->common.aml_opcode ==
|
|
|
|
AML_VAR_PACKAGE_OP)
|
|
|
|
|| (op->common.parent->common.aml_opcode == AML_BUFFER_OP)
|
|
|
|
|| (op->common.parent->common.aml_opcode ==
|
2008-04-10 09:06:41 -06:00
|
|
|
AML_INT_EVAL_SUBTREE_OP)
|
|
|
|
|| (op->common.parent->common.aml_opcode ==
|
|
|
|
AML_BANK_FIELD_OP)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* These opcodes allow term_arg(s) as operands and therefore
|
2012-10-30 20:26:55 -06:00
|
|
|
* the operands can be method calls. The result is used.
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
|
|
|
goto result_used;
|
|
|
|
}
|
|
|
|
|
|
|
|
goto result_not_used;
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
|
|
|
/*
|
|
|
|
* In all other cases. the parent will actually use the return
|
|
|
|
* object, so keep it.
|
|
|
|
*/
|
|
|
|
goto result_used;
|
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
result_used:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
|
|
"Result of [%s] used by Parent [%s] Op=%p\n",
|
|
|
|
acpi_ps_get_opcode_name(op->common.aml_opcode),
|
|
|
|
acpi_ps_get_opcode_name(op->common.parent->common.
|
|
|
|
aml_opcode), op));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-30 17:03:00 -06:00
|
|
|
return_UINT8(TRUE);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
result_not_used:
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
|
|
"Result of [%s] not used by Parent [%s] Op=%p\n",
|
|
|
|
acpi_ps_get_opcode_name(op->common.aml_opcode),
|
|
|
|
acpi_ps_get_opcode_name(op->common.parent->common.
|
|
|
|
aml_opcode), op));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-30 17:03:00 -06:00
|
|
|
return_UINT8(FALSE);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_delete_result_if_not_used
|
|
|
|
*
|
2012-07-11 19:40:10 -06:00
|
|
|
* PARAMETERS: op - Current parse Op
|
2005-04-16 16:20:36 -06:00
|
|
|
* result_obj - Result of the operation
|
|
|
|
* walk_state - Current state
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
2012-10-30 20:26:55 -06:00
|
|
|
* DESCRIPTION: Used after interpretation of an opcode. If there is an internal
|
2005-04-16 16:20:36 -06:00
|
|
|
* result descriptor, check if the parent opcode will actually use
|
2012-10-30 20:26:55 -06:00
|
|
|
* this result. If not, delete the result now so that it will
|
2005-04-16 16:20:36 -06:00
|
|
|
* not become orphaned.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
void
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ds_delete_result_if_not_used(union acpi_parse_object *op,
|
|
|
|
union acpi_operand_object *result_obj,
|
|
|
|
struct acpi_walk_state *walk_state)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-08-04 22:44:28 -06:00
|
|
|
union acpi_operand_object *obj_desc;
|
|
|
|
acpi_status status;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_delete_result_if_not_used, result_obj);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
if (!op) {
|
2006-01-27 14:43:00 -07:00
|
|
|
ACPI_ERROR((AE_INFO, "Null Op"));
|
2005-04-16 16:20:36 -06:00
|
|
|
return_VOID;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!result_obj) {
|
|
|
|
return_VOID;
|
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
if (!acpi_ds_is_result_used(op, walk_state)) {
|
2006-10-01 22:00:00 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* Must pop the result stack (obj_desc should be equal to result_obj) */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
status = acpi_ds_result_pop(&obj_desc, walk_state);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
acpi_ut_remove_reference(result_obj);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return_VOID;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_resolve_operands
|
|
|
|
*
|
|
|
|
* PARAMETERS: walk_state - Current walk state with operands on stack
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
2012-10-30 20:26:55 -06:00
|
|
|
* DESCRIPTION: Resolve all operands to their values. Used to prepare
|
2005-04-16 16:20:36 -06:00
|
|
|
* arguments to a control method invocation (a call from one
|
|
|
|
* method to another.)
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_status acpi_ds_resolve_operands(struct acpi_walk_state *walk_state)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-08-04 22:44:28 -06:00
|
|
|
u32 i;
|
|
|
|
acpi_status status = AE_OK;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_resolve_operands, walk_state);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Attempt to resolve each of the valid operands
|
2012-10-30 20:26:55 -06:00
|
|
|
* Method arguments are passed by reference, not by value. This means
|
2005-04-16 16:20:36 -06:00
|
|
|
* that the actual objects are passed, not copies of the objects.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < walk_state->num_operands; i++) {
|
2005-08-04 22:44:28 -06:00
|
|
|
status =
|
|
|
|
acpi_ex_resolve_to_value(&walk_state->operands[i],
|
|
|
|
walk_state);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_clear_operands
|
|
|
|
*
|
|
|
|
* PARAMETERS: walk_state - Current walk state with operands on stack
|
|
|
|
*
|
|
|
|
* RETURN: None
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Clear all operands on the current walk state operand stack.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
void acpi_ds_clear_operands(struct acpi_walk_state *walk_state)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-08-04 22:44:28 -06:00
|
|
|
u32 i;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_clear_operands, walk_state);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Remove a reference on each operand on the stack */
|
|
|
|
|
|
|
|
for (i = 0; i < walk_state->num_operands; i++) {
|
|
|
|
/*
|
|
|
|
* Remove a reference to all operands, including both
|
|
|
|
* "Arguments" and "Targets".
|
|
|
|
*/
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ut_remove_reference(walk_state->operands[i]);
|
2005-04-16 16:20:36 -06:00
|
|
|
walk_state->operands[i] = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
walk_state->num_operands = 0;
|
|
|
|
return_VOID;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_create_operand
|
|
|
|
*
|
|
|
|
* PARAMETERS: walk_state - Current walk state
|
2012-07-11 19:40:10 -06:00
|
|
|
* arg - Parse object for the argument
|
2005-04-16 16:20:36 -06:00
|
|
|
* arg_index - Which argument (zero based)
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Translate a parse tree object that is an argument to an AML
|
2012-10-30 20:26:55 -06:00
|
|
|
* opcode to the equivalent interpreter object. This may include
|
2005-04-16 16:20:36 -06:00
|
|
|
* looking up a name or entering a new name into the internal
|
|
|
|
* namespace.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ds_create_operand(struct acpi_walk_state *walk_state,
|
|
|
|
union acpi_parse_object *arg, u32 arg_index)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_status status = AE_OK;
|
|
|
|
char *name_string;
|
|
|
|
u32 name_length;
|
|
|
|
union acpi_operand_object *obj_desc;
|
|
|
|
union acpi_parse_object *parent_op;
|
|
|
|
u16 opcode;
|
|
|
|
acpi_interpreter_mode interpreter_mode;
|
|
|
|
const struct acpi_opcode_info *op_info;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_create_operand, arg);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* A valid name must be looked up in the namespace */
|
|
|
|
|
|
|
|
if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) &&
|
2008-04-10 09:06:37 -06:00
|
|
|
(arg->common.value.string) &&
|
|
|
|
!(arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Getting a name: Arg=%p\n",
|
|
|
|
arg));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Get the entire name string from the AML stream */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
status =
|
|
|
|
acpi_ex_get_name_string(ACPI_TYPE_ANY,
|
|
|
|
arg->common.value.buffer,
|
|
|
|
&name_string, &name_length);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* All prefixes have been handled, and the name is in name_string */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Special handling for buffer_field declarations. This is a deferred
|
|
|
|
* opcode that unfortunately defines the field name as the last
|
2012-10-30 20:26:55 -06:00
|
|
|
* parameter instead of the first. We get here when we are performing
|
2005-04-16 16:20:36 -06:00
|
|
|
* the deferred execution, so the actual name of the field is already
|
2012-10-30 20:26:55 -06:00
|
|
|
* in the namespace. We don't want to attempt to look it up again
|
2005-04-16 16:20:36 -06:00
|
|
|
* because we may be executing in a different scope than where the
|
|
|
|
* actual opcode exists.
|
|
|
|
*/
|
|
|
|
if ((walk_state->deferred_node) &&
|
2005-08-04 22:44:28 -06:00
|
|
|
(walk_state->deferred_node->type == ACPI_TYPE_BUFFER_FIELD)
|
2006-10-01 22:00:00 -06:00
|
|
|
&& (arg_index ==
|
|
|
|
(u32) ((walk_state->opcode ==
|
|
|
|
AML_CREATE_FIELD_OP) ? 3 : 2))) {
|
2005-08-04 22:44:28 -06:00
|
|
|
obj_desc =
|
|
|
|
ACPI_CAST_PTR(union acpi_operand_object,
|
|
|
|
walk_state->deferred_node);
|
2005-04-16 16:20:36 -06:00
|
|
|
status = AE_OK;
|
2005-08-04 22:44:28 -06:00
|
|
|
} else { /* All other opcodes */
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* Differentiate between a namespace "create" operation
|
|
|
|
* versus a "lookup" operation (IMODE_LOAD_PASS2 vs.
|
|
|
|
* IMODE_EXECUTE) in order to support the creation of
|
|
|
|
* namespace objects during the execution of control methods.
|
|
|
|
*/
|
|
|
|
parent_op = arg->common.parent;
|
2005-08-04 22:44:28 -06:00
|
|
|
op_info =
|
|
|
|
acpi_ps_get_opcode_info(parent_op->common.
|
|
|
|
aml_opcode);
|
|
|
|
if ((op_info->flags & AML_NSNODE)
|
|
|
|
&& (parent_op->common.aml_opcode !=
|
|
|
|
AML_INT_METHODCALL_OP)
|
|
|
|
&& (parent_op->common.aml_opcode != AML_REGION_OP)
|
|
|
|
&& (parent_op->common.aml_opcode !=
|
|
|
|
AML_INT_NAMEPATH_OP)) {
|
2006-10-01 22:00:00 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* Enter name into namespace if not found */
|
|
|
|
|
|
|
|
interpreter_mode = ACPI_IMODE_LOAD_PASS2;
|
2005-08-04 22:44:28 -06:00
|
|
|
} else {
|
2005-04-16 16:20:36 -06:00
|
|
|
/* Return a failure if name not found */
|
|
|
|
|
|
|
|
interpreter_mode = ACPI_IMODE_EXECUTE;
|
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
status =
|
|
|
|
acpi_ns_lookup(walk_state->scope_info, name_string,
|
|
|
|
ACPI_TYPE_ANY, interpreter_mode,
|
|
|
|
ACPI_NS_SEARCH_PARENT |
|
|
|
|
ACPI_NS_DONT_OPEN_SCOPE, walk_state,
|
|
|
|
ACPI_CAST_INDIRECT_PTR(struct
|
|
|
|
acpi_namespace_node,
|
|
|
|
&obj_desc));
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* The only case where we pass through (ignore) a NOT_FOUND
|
|
|
|
* error is for the cond_ref_of opcode.
|
|
|
|
*/
|
|
|
|
if (status == AE_NOT_FOUND) {
|
2005-08-04 22:44:28 -06:00
|
|
|
if (parent_op->common.aml_opcode ==
|
|
|
|
AML_COND_REF_OF_OP) {
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* For the Conditional Reference op, it's OK if
|
|
|
|
* the name is not found; We just need a way to
|
|
|
|
* indicate this to the interpreter, set the
|
|
|
|
* object to the root
|
|
|
|
*/
|
2012-10-30 20:25:45 -06:00
|
|
|
obj_desc =
|
|
|
|
ACPI_CAST_PTR(union
|
2007-05-09 21:34:35 -06:00
|
|
|
acpi_operand_object,
|
|
|
|
acpi_gbl_root_node);
|
2005-04-16 16:20:36 -06:00
|
|
|
status = AE_OK;
|
2005-08-04 22:44:28 -06:00
|
|
|
} else {
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* We just plain didn't find it -- which is a
|
|
|
|
* very serious error at this point
|
|
|
|
*/
|
|
|
|
status = AE_AML_NAME_NOT_FOUND;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
if (ACPI_FAILURE(status)) {
|
2006-01-27 14:43:00 -07:00
|
|
|
ACPI_ERROR_NAMESPACE(name_string, status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Free the namestring created above */
|
|
|
|
|
2006-10-02 22:00:00 -06:00
|
|
|
ACPI_FREE(name_string);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Check status from the lookup */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Put the resulting object onto the current object stack */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
status = acpi_ds_obj_stack_push(obj_desc, walk_state);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUGGER_EXEC(acpi_db_display_argument_object
|
|
|
|
(obj_desc, walk_state));
|
|
|
|
} else {
|
2005-04-16 16:20:36 -06:00
|
|
|
/* Check for null name case */
|
|
|
|
|
2008-04-10 09:06:37 -06:00
|
|
|
if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) &&
|
|
|
|
!(arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* If the name is null, this means that this is an
|
|
|
|
* optional result parameter that was not specified
|
2012-10-30 20:26:55 -06:00
|
|
|
* in the original ASL. Create a Zero Constant for a
|
|
|
|
* placeholder. (Store to a constant is a Noop.)
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
2005-08-04 22:44:28 -06:00
|
|
|
opcode = AML_ZERO_OP; /* Has no arguments! */
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
|
|
|
"Null namepath: Arg=%p\n", arg));
|
|
|
|
} else {
|
2005-04-16 16:20:36 -06:00
|
|
|
opcode = arg->common.aml_opcode;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get the object type of the argument */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
op_info = acpi_ps_get_opcode_info(opcode);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (op_info->object_type == ACPI_TYPE_INVALID) {
|
2005-08-04 22:44:28 -06:00
|
|
|
return_ACPI_STATUS(AE_NOT_IMPLEMENTED);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2008-04-10 09:06:37 -06:00
|
|
|
if ((op_info->flags & AML_HAS_RETVAL)
|
|
|
|
|| (arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
[ACPI] ACPICA 20050930
Completed a major overhaul of the Resource Manager code -
specifically, optimizations in the area of the AML/internal
resource conversion code. The code has been optimized to
simplify and eliminate duplicated code, CPU stack use has
been decreased by optimizing function parameters and local
variables, and naming conventions across the manager have
been standardized for clarity and ease of maintenance (this
includes function, parameter, variable, and struct/typedef
names.)
All Resource Manager dispatch and information tables have
been moved to a single location for clarity and ease of
maintenance. One new file was created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have
been modified to guarantee that the argument is
not evaluated twice, making them less prone to macro
side-effects. However, since there exists the possibility
of additional stack use if a particular compiler cannot
optimize them (such as in the debug generation case),
the original macros are optionally available. Note that
some invocations of the return_VALUE macro may now cause
size mismatch warnings; the return_UINT8 and return_UINT32
macros are provided to eliminate these. (From Randy Dunlap)
Implemented a new mechanism to enable debug tracing for
individual control methods. A new external interface,
acpi_debug_trace(), is provided to enable this mechanism. The
intent is to allow the host OS to easily enable and disable
tracing for problematic control methods. This interface
can be easily exposed to a user or debugger interface if
desired. See the file psxface.c for details.
acpi_ut_callocate() will now return a valid pointer if a
length of zero is specified - a length of one is used
and a warning is issued. This matches the behavior of
acpi_ut_allocate().
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-09-30 17:03:00 -06:00
|
|
|
"Argument previously created, already stacked\n"));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUGGER_EXEC(acpi_db_display_argument_object
|
|
|
|
(walk_state->
|
|
|
|
operands[walk_state->num_operands -
|
|
|
|
1], walk_state));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Use value that was already previously returned
|
|
|
|
* by the evaluation of this argument
|
|
|
|
*/
|
2008-04-10 09:06:36 -06:00
|
|
|
status = acpi_ds_result_pop(&obj_desc, walk_state);
|
2005-08-04 22:44:28 -06:00
|
|
|
if (ACPI_FAILURE(status)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* Only error is underflow, and this indicates
|
|
|
|
* a missing or null operand!
|
|
|
|
*/
|
2006-01-27 14:43:00 -07:00
|
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
|
|
"Missing or null operand"));
|
2005-08-04 22:44:28 -06:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2005-08-04 22:44:28 -06:00
|
|
|
} else {
|
2005-04-16 16:20:36 -06:00
|
|
|
/* Create an ACPI_INTERNAL_OBJECT for the argument */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
obj_desc =
|
|
|
|
acpi_ut_create_internal_object(op_info->
|
|
|
|
object_type);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (!obj_desc) {
|
2005-08-04 22:44:28 -06:00
|
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Initialize the new object */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
status =
|
|
|
|
acpi_ds_init_object_from_op(walk_state, arg, opcode,
|
|
|
|
&obj_desc);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
acpi_ut_delete_object_desc(obj_desc);
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Put the operand object on the object stack */
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
status = acpi_ds_obj_stack_push(obj_desc, walk_state);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
ACPI_DEBUGGER_EXEC(acpi_db_display_argument_object
|
|
|
|
(obj_desc, walk_state));
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_create_operands
|
|
|
|
*
|
|
|
|
* PARAMETERS: walk_state - Current state
|
|
|
|
* first_arg - First argument of a parser argument tree
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Convert an operator's arguments from a parse tree format to
|
|
|
|
* namespace objects and place those argument object on the object
|
|
|
|
* stack in preparation for evaluation by the interpreter.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_ds_create_operands(struct acpi_walk_state *walk_state,
|
|
|
|
union acpi_parse_object *first_arg)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-08-04 22:44:28 -06:00
|
|
|
acpi_status status = AE_OK;
|
|
|
|
union acpi_parse_object *arg;
|
2008-04-10 09:06:36 -06:00
|
|
|
union acpi_parse_object *arguments[ACPI_OBJ_NUM_OPERANDS];
|
2008-04-10 09:06:40 -06:00
|
|
|
u32 arg_count = 0;
|
|
|
|
u32 index = walk_state->num_operands;
|
|
|
|
u32 i;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
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 15:15:00 -06:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_create_operands, first_arg);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-04-10 09:06:36 -06:00
|
|
|
/* Get all arguments in the list */
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
arg = first_arg;
|
|
|
|
while (arg) {
|
2008-04-10 09:06:36 -06:00
|
|
|
if (index >= ACPI_OBJ_NUM_OPERANDS) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_DATA);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2008-04-10 09:06:36 -06:00
|
|
|
arguments[index] = arg;
|
|
|
|
walk_state->operands[index] = NULL;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Move on to next argument, if any */
|
|
|
|
|
|
|
|
arg = arg->common.next;
|
|
|
|
arg_count++;
|
2008-04-10 09:06:36 -06:00
|
|
|
index++;
|
|
|
|
}
|
|
|
|
|
|
|
|
index--;
|
|
|
|
|
|
|
|
/* It is the appropriate order to get objects from the Result stack */
|
|
|
|
|
|
|
|
for (i = 0; i < arg_count; i++) {
|
|
|
|
arg = arguments[index];
|
|
|
|
|
|
|
|
/* Force the filling of the operand stack in inverse order */
|
|
|
|
|
2008-04-10 09:06:40 -06:00
|
|
|
walk_state->operand_index = (u8) index;
|
2008-04-10 09:06:36 -06:00
|
|
|
|
|
|
|
status = acpi_ds_create_operand(walk_state, arg, index);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
index--;
|
|
|
|
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
|
2010-05-25 21:47:13 -06:00
|
|
|
"Arg #%u (%p) done, Arg1=%p\n", index, arg,
|
2008-04-10 09:06:36 -06:00
|
|
|
first_arg));
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-08-04 22:44:28 -06:00
|
|
|
cleanup:
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* We must undo everything done above; meaning that we must
|
|
|
|
* pop everything off of the operand stack and delete those
|
|
|
|
* objects
|
|
|
|
*/
|
2008-04-10 09:06:36 -06:00
|
|
|
acpi_ds_obj_stack_pop_and_delete(arg_count, walk_state);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2010-05-25 21:47:13 -06:00
|
|
|
ACPI_EXCEPTION((AE_INFO, status, "While creating Arg %u", index));
|
2005-08-04 22:44:28 -06:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2008-04-10 09:06:37 -06:00
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ds_evaluate_name_path
|
|
|
|
*
|
|
|
|
* PARAMETERS: walk_state - Current state of the parse tree walk,
|
|
|
|
* the opcode of current operation should be
|
|
|
|
* AML_INT_NAMEPATH_OP
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Translate the -name_path- parse tree object to the equivalent
|
|
|
|
* interpreter object, convert it to value, if needed, duplicate
|
|
|
|
* it, if needed, and push it onto the current result stack.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
acpi_status acpi_ds_evaluate_name_path(struct acpi_walk_state *walk_state)
|
|
|
|
{
|
|
|
|
acpi_status status = AE_OK;
|
|
|
|
union acpi_parse_object *op = walk_state->op;
|
|
|
|
union acpi_operand_object **operand = &walk_state->operands[0];
|
|
|
|
union acpi_operand_object *new_obj_desc;
|
|
|
|
u8 type;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_evaluate_name_path, walk_state);
|
|
|
|
|
|
|
|
if (!op->common.parent) {
|
|
|
|
|
|
|
|
/* This happens after certain exception processing */
|
|
|
|
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
|
|
|
|
(op->common.parent->common.aml_opcode == AML_VAR_PACKAGE_OP) ||
|
|
|
|
(op->common.parent->common.aml_opcode == AML_REF_OF_OP)) {
|
|
|
|
|
|
|
|
/* TBD: Should we specify this feature as a bit of op_info->Flags of these opcodes? */
|
|
|
|
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = acpi_ds_create_operand(walk_state, op, 0);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op->common.flags & ACPI_PARSEOP_TARGET) {
|
|
|
|
new_obj_desc = *operand;
|
|
|
|
goto push_result;
|
|
|
|
}
|
|
|
|
|
2009-02-17 23:44:03 -07:00
|
|
|
type = (*operand)->common.type;
|
2008-04-10 09:06:37 -06:00
|
|
|
|
|
|
|
status = acpi_ex_resolve_to_value(operand, walk_state);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (type == ACPI_TYPE_INTEGER) {
|
|
|
|
|
|
|
|
/* It was incremented by acpi_ex_resolve_to_value */
|
|
|
|
|
|
|
|
acpi_ut_remove_reference(*operand);
|
|
|
|
|
|
|
|
status =
|
|
|
|
acpi_ut_copy_iobject_to_iobject(*operand, &new_obj_desc,
|
|
|
|
walk_state);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* The object either was anew created or is
|
|
|
|
* a Namespace node - don't decrement it.
|
|
|
|
*/
|
|
|
|
new_obj_desc = *operand;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Cleanup for name-path operand */
|
|
|
|
|
|
|
|
status = acpi_ds_obj_stack_pop(1, walk_state);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
walk_state->result_obj = new_obj_desc;
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
push_result:
|
|
|
|
|
|
|
|
walk_state->result_obj = new_obj_desc;
|
|
|
|
|
|
|
|
status = acpi_ds_result_push(walk_state->result_obj, walk_state);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
|
|
|
|
/* Force to take it from stack */
|
|
|
|
|
|
|
|
op->common.flags |= ACPI_PARSEOP_IN_STACK;
|
|
|
|
}
|
|
|
|
|
|
|
|
exit:
|
|
|
|
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|