2005-04-17 05:20:36 +07:00
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/******************************************************************************
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*
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* Module Name: psparse - Parser top level AML parse routines
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*
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*****************************************************************************/
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/*
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2006-01-14 04:22:00 +07:00
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* Copyright (C) 2000 - 2006, R. Byron Moore
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2005-04-17 05:20:36 +07:00
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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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/*
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* Parse the AML and build an operation tree as most interpreters,
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* like Perl, do. Parsing is done by hand rather than with a YACC
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* generated parser to tightly constrain stack and dynamic memory
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* usage. At the same time, parsing is kept flexible and the code
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* fairly compact by parsing based on a list of AML opcode
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* templates in aml_op_info[]
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*/
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#include <acpi/acpi.h>
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#include <acpi/acparser.h>
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#include <acpi/acdispat.h>
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#include <acpi/amlcode.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acinterp.h>
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#define _COMPONENT ACPI_PARSER
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2005-08-05 11:44:28 +07:00
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ACPI_MODULE_NAME("psparse")
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2005-04-17 05:20:36 +07:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_ps_get_opcode_size
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*
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* PARAMETERS: Opcode - An AML opcode
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*
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* RETURN: Size of the opcode, in bytes (1 or 2)
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*
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* DESCRIPTION: Get the size of the current opcode.
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*
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******************************************************************************/
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2005-08-05 11:44:28 +07:00
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u32 acpi_ps_get_opcode_size(u32 opcode)
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2005-04-17 05:20:36 +07:00
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{
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/* Extended (2-byte) opcode if > 255 */
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if (opcode > 0x00FF) {
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return (2);
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}
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/* Otherwise, just a single byte opcode */
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return (1);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ps_peek_opcode
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*
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* PARAMETERS: parser_state - A parser state object
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*
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2005-04-19 09:49:35 +07:00
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* RETURN: Next AML opcode
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2005-04-17 05:20:36 +07:00
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*
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* DESCRIPTION: Get next AML opcode (without incrementing AML pointer)
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*
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******************************************************************************/
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2005-08-05 11:44:28 +07:00
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u16 acpi_ps_peek_opcode(struct acpi_parse_state * parser_state)
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2005-04-17 05:20:36 +07:00
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{
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2005-08-05 11:44:28 +07:00
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u8 *aml;
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u16 opcode;
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2005-04-17 05:20:36 +07:00
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aml = parser_state->aml;
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2005-08-05 11:44:28 +07:00
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opcode = (u16) ACPI_GET8(aml);
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2005-04-17 05:20:36 +07:00
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ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com>
ACPICA 20050617:
Moved the object cache operations into the OS interface
layer (OSL) to allow the host OS to handle these operations
if desired (for example, the Linux OSL will invoke the
slab allocator). This support is optional; the compile
time define ACPI_USE_LOCAL_CACHE may be used to utilize
the original cache code in the ACPI CA core. The new OSL
interfaces are shown below. See utalloc.c for an example
implementation, and acpiosxf.h for the exact interface
definitions. Thanks to Alexey Starikovskiy.
acpi_os_create_cache
acpi_os_delete_cache
acpi_os_purge_cache
acpi_os_acquire_object
acpi_os_release_object
Modified the interfaces to acpi_os_acquire_lock and
acpi_os_release_lock to return and restore a flags
parameter. This fits better with many OS lock models.
Note: the current execution state (interrupt handler
or not) is no longer passed to these interfaces. If
necessary, the OSL must determine this state by itself, a
simple and fast operation. Thanks to Alexey Starikovskiy.
Fixed a problem in the ACPI table handling where a valid
XSDT was assumed present if the revision of the RSDP
was 2 or greater. According to the ACPI specification,
the XSDT is optional in all cases, and the table manager
therefore now checks for both an RSDP >=2 and a valid
XSDT pointer. Otherwise, the RSDT pointer is used.
Some ACPI 2.0 compliant BIOSs contain only the RSDT.
Fixed an interpreter problem with the Mid() operator in the
case of an input string where the resulting output string
is of zero length. It now correctly returns a valid,
null terminated string object instead of a string object
with a null pointer.
Fixed a problem with the control method argument handling
to allow a store to an Arg object that already contains an
object of type Device. The Device object is now correctly
overwritten. Previously, an error was returned.
ACPICA 20050624:
Modified the new OSL cache interfaces to use ACPI_CACHE_T
as the type for the host-defined cache object. This allows
the OSL implementation to define and type this object in
any manner desired, simplifying the OSL implementation.
For example, ACPI_CACHE_T is defined as kmem_cache_t for
Linux, and should be defined in the OS-specific header
file for other operating systems as required.
Changed the interface to AcpiOsAcquireObject to directly
return the requested object as the function return (instead
of ACPI_STATUS.) This change was made for performance
reasons, since this is the purpose of the interface in the
first place. acpi_os_acquire_object is now similar to the
acpi_os_allocate interface. Thanks to Alexey Starikovskiy.
Modified the initialization sequence in
acpi_initialize_subsystem to call the OSL interface
acpi_osl_initialize first, before any local initialization.
This change was required because the global initialization
now calls OSL interfaces.
Restructured the code base to split some files because
of size and/or because the code logically belonged in a
separate file. New files are listed below.
utilities/utcache.c /* Local cache interfaces */
utilities/utmutex.c /* Local mutex support */
utilities/utstate.c /* State object support */
parser/psloop.c /* Main AML parse loop */
Signed-off-by: Len Brown <len.brown@intel.com>
2005-06-24 11:00:00 +07:00
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if (opcode == AML_EXTENDED_OP_PREFIX) {
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2006-10-02 11:00:00 +07:00
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ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com>
ACPICA 20050617:
Moved the object cache operations into the OS interface
layer (OSL) to allow the host OS to handle these operations
if desired (for example, the Linux OSL will invoke the
slab allocator). This support is optional; the compile
time define ACPI_USE_LOCAL_CACHE may be used to utilize
the original cache code in the ACPI CA core. The new OSL
interfaces are shown below. See utalloc.c for an example
implementation, and acpiosxf.h for the exact interface
definitions. Thanks to Alexey Starikovskiy.
acpi_os_create_cache
acpi_os_delete_cache
acpi_os_purge_cache
acpi_os_acquire_object
acpi_os_release_object
Modified the interfaces to acpi_os_acquire_lock and
acpi_os_release_lock to return and restore a flags
parameter. This fits better with many OS lock models.
Note: the current execution state (interrupt handler
or not) is no longer passed to these interfaces. If
necessary, the OSL must determine this state by itself, a
simple and fast operation. Thanks to Alexey Starikovskiy.
Fixed a problem in the ACPI table handling where a valid
XSDT was assumed present if the revision of the RSDP
was 2 or greater. According to the ACPI specification,
the XSDT is optional in all cases, and the table manager
therefore now checks for both an RSDP >=2 and a valid
XSDT pointer. Otherwise, the RSDT pointer is used.
Some ACPI 2.0 compliant BIOSs contain only the RSDT.
Fixed an interpreter problem with the Mid() operator in the
case of an input string where the resulting output string
is of zero length. It now correctly returns a valid,
null terminated string object instead of a string object
with a null pointer.
Fixed a problem with the control method argument handling
to allow a store to an Arg object that already contains an
object of type Device. The Device object is now correctly
overwritten. Previously, an error was returned.
ACPICA 20050624:
Modified the new OSL cache interfaces to use ACPI_CACHE_T
as the type for the host-defined cache object. This allows
the OSL implementation to define and type this object in
any manner desired, simplifying the OSL implementation.
For example, ACPI_CACHE_T is defined as kmem_cache_t for
Linux, and should be defined in the OS-specific header
file for other operating systems as required.
Changed the interface to AcpiOsAcquireObject to directly
return the requested object as the function return (instead
of ACPI_STATUS.) This change was made for performance
reasons, since this is the purpose of the interface in the
first place. acpi_os_acquire_object is now similar to the
acpi_os_allocate interface. Thanks to Alexey Starikovskiy.
Modified the initialization sequence in
acpi_initialize_subsystem to call the OSL interface
acpi_osl_initialize first, before any local initialization.
This change was required because the global initialization
now calls OSL interfaces.
Restructured the code base to split some files because
of size and/or because the code logically belonged in a
separate file. New files are listed below.
utilities/utcache.c /* Local cache interfaces */
utilities/utmutex.c /* Local mutex support */
utilities/utstate.c /* State object support */
parser/psloop.c /* Main AML parse loop */
Signed-off-by: Len Brown <len.brown@intel.com>
2005-06-24 11:00:00 +07:00
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/* Extended opcode, get the second opcode byte */
|
2005-04-17 05:20:36 +07:00
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aml++;
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2005-08-05 11:44:28 +07:00
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opcode = (u16) ((opcode << 8) | ACPI_GET8(aml));
|
2005-04-17 05:20:36 +07:00
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}
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return (opcode);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ps_complete_this_op
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*
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* PARAMETERS: walk_state - Current State
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* Op - Op to complete
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*
|
2005-05-26 11:00:00 +07:00
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* RETURN: Status
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2005-04-17 05:20:36 +07:00
|
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*
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* DESCRIPTION: Perform any cleanup at the completion of an Op.
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*
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******************************************************************************/
|
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|
|
ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com>
ACPICA 20050617:
Moved the object cache operations into the OS interface
layer (OSL) to allow the host OS to handle these operations
if desired (for example, the Linux OSL will invoke the
slab allocator). This support is optional; the compile
time define ACPI_USE_LOCAL_CACHE may be used to utilize
the original cache code in the ACPI CA core. The new OSL
interfaces are shown below. See utalloc.c for an example
implementation, and acpiosxf.h for the exact interface
definitions. Thanks to Alexey Starikovskiy.
acpi_os_create_cache
acpi_os_delete_cache
acpi_os_purge_cache
acpi_os_acquire_object
acpi_os_release_object
Modified the interfaces to acpi_os_acquire_lock and
acpi_os_release_lock to return and restore a flags
parameter. This fits better with many OS lock models.
Note: the current execution state (interrupt handler
or not) is no longer passed to these interfaces. If
necessary, the OSL must determine this state by itself, a
simple and fast operation. Thanks to Alexey Starikovskiy.
Fixed a problem in the ACPI table handling where a valid
XSDT was assumed present if the revision of the RSDP
was 2 or greater. According to the ACPI specification,
the XSDT is optional in all cases, and the table manager
therefore now checks for both an RSDP >=2 and a valid
XSDT pointer. Otherwise, the RSDT pointer is used.
Some ACPI 2.0 compliant BIOSs contain only the RSDT.
Fixed an interpreter problem with the Mid() operator in the
case of an input string where the resulting output string
is of zero length. It now correctly returns a valid,
null terminated string object instead of a string object
with a null pointer.
Fixed a problem with the control method argument handling
to allow a store to an Arg object that already contains an
object of type Device. The Device object is now correctly
overwritten. Previously, an error was returned.
ACPICA 20050624:
Modified the new OSL cache interfaces to use ACPI_CACHE_T
as the type for the host-defined cache object. This allows
the OSL implementation to define and type this object in
any manner desired, simplifying the OSL implementation.
For example, ACPI_CACHE_T is defined as kmem_cache_t for
Linux, and should be defined in the OS-specific header
file for other operating systems as required.
Changed the interface to AcpiOsAcquireObject to directly
return the requested object as the function return (instead
of ACPI_STATUS.) This change was made for performance
reasons, since this is the purpose of the interface in the
first place. acpi_os_acquire_object is now similar to the
acpi_os_allocate interface. Thanks to Alexey Starikovskiy.
Modified the initialization sequence in
acpi_initialize_subsystem to call the OSL interface
acpi_osl_initialize first, before any local initialization.
This change was required because the global initialization
now calls OSL interfaces.
Restructured the code base to split some files because
of size and/or because the code logically belonged in a
separate file. New files are listed below.
utilities/utcache.c /* Local cache interfaces */
utilities/utmutex.c /* Local mutex support */
utilities/utstate.c /* State object support */
parser/psloop.c /* Main AML parse loop */
Signed-off-by: Len Brown <len.brown@intel.com>
2005-06-24 11:00:00 +07:00
|
|
|
acpi_status
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
|
|
|
|
|
union acpi_parse_object * op)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
2005-08-05 11:44:28 +07:00
|
|
|
union acpi_parse_object *prev;
|
|
|
|
|
union acpi_parse_object *next;
|
|
|
|
|
const struct acpi_opcode_info *parent_info;
|
|
|
|
|
union acpi_parse_object *replacement_op = NULL;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
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>
2006-04-22 04:15:00 +07:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ps_complete_this_op, op);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/* Check for null Op, can happen if AML code is corrupt */
|
|
|
|
|
|
|
|
|
|
if (!op) {
|
2005-08-05 11:44:28 +07:00
|
|
|
return_ACPI_STATUS(AE_OK); /* OK for now */
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Delete this op and the subtree below it if asked to */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
if (((walk_state->parse_flags & ACPI_PARSE_TREE_MASK) !=
|
|
|
|
|
ACPI_PARSE_DELETE_TREE)
|
|
|
|
|
|| (walk_state->op_info->class == AML_CLASS_ARGUMENT)) {
|
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Make sure that we only delete this subtree */
|
|
|
|
|
|
|
|
|
|
if (op->common.parent) {
|
2005-05-26 11:00:00 +07:00
|
|
|
prev = op->common.parent->common.value.arg;
|
|
|
|
|
if (!prev) {
|
2006-10-02 11:00:00 +07:00
|
|
|
|
2005-05-26 11:00:00 +07:00
|
|
|
/* Nothing more to do */
|
|
|
|
|
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|
|
goto cleanup;
|
|
|
|
|
}
|
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
/*
|
|
|
|
|
* Check if we need to replace the operator and its subtree
|
|
|
|
|
* with a return value op (placeholder op)
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
parent_info =
|
|
|
|
|
acpi_ps_get_opcode_info(op->common.parent->common.
|
|
|
|
|
aml_opcode);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
switch (parent_info->class) {
|
|
|
|
|
case AML_CLASS_CONTROL:
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case AML_CLASS_CREATE:
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* These opcodes contain term_arg operands. The current
|
|
|
|
|
* op must be replaced by a placeholder return op
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
replacement_op =
|
|
|
|
|
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!replacement_op) {
|
2005-05-26 11:00:00 +07:00
|
|
|
goto allocate_error;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case AML_CLASS_NAMED_OBJECT:
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* These opcodes contain term_arg operands. The current
|
|
|
|
|
* op must be replaced by a placeholder return op
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
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_BUFFER_OP)
|
|
|
|
|
|| (op->common.parent->common.aml_opcode ==
|
|
|
|
|
AML_PACKAGE_OP)
|
|
|
|
|
|| (op->common.parent->common.aml_opcode ==
|
|
|
|
|
AML_VAR_PACKAGE_OP)) {
|
|
|
|
|
replacement_op =
|
|
|
|
|
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!replacement_op) {
|
2005-05-26 11:00:00 +07:00
|
|
|
goto allocate_error;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
2005-08-05 11:44:28 +07:00
|
|
|
} else
|
|
|
|
|
if ((op->common.parent->common.aml_opcode ==
|
|
|
|
|
AML_NAME_OP)
|
|
|
|
|
&& (walk_state->pass_number <=
|
|
|
|
|
ACPI_IMODE_LOAD_PASS2)) {
|
|
|
|
|
if ((op->common.aml_opcode == AML_BUFFER_OP)
|
|
|
|
|
|| (op->common.aml_opcode == AML_PACKAGE_OP)
|
|
|
|
|
|| (op->common.aml_opcode ==
|
|
|
|
|
AML_VAR_PACKAGE_OP)) {
|
|
|
|
|
replacement_op =
|
|
|
|
|
acpi_ps_alloc_op(op->common.
|
|
|
|
|
aml_opcode);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!replacement_op) {
|
2005-05-26 11:00:00 +07:00
|
|
|
goto allocate_error;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
replacement_op->named.data =
|
|
|
|
|
op->named.data;
|
|
|
|
|
replacement_op->named.length =
|
|
|
|
|
op->named.length;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
2005-05-26 11:00:00 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
replacement_op =
|
|
|
|
|
acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!replacement_op) {
|
2005-05-26 11:00:00 +07:00
|
|
|
goto allocate_error;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We must unlink this op from the parent tree */
|
|
|
|
|
|
|
|
|
|
if (prev == op) {
|
2006-10-02 11:00:00 +07:00
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
/* This op is the first in the list */
|
|
|
|
|
|
|
|
|
|
if (replacement_op) {
|
2005-08-05 11:44:28 +07:00
|
|
|
replacement_op->common.parent =
|
|
|
|
|
op->common.parent;
|
|
|
|
|
replacement_op->common.value.arg = NULL;
|
|
|
|
|
replacement_op->common.node = op->common.node;
|
|
|
|
|
op->common.parent->common.value.arg =
|
|
|
|
|
replacement_op;
|
|
|
|
|
replacement_op->common.next = op->common.next;
|
|
|
|
|
} else {
|
|
|
|
|
op->common.parent->common.value.arg =
|
|
|
|
|
op->common.next;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Search the parent list */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
else
|
|
|
|
|
while (prev) {
|
2006-10-02 11:00:00 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
/* Traverse all siblings in the parent's argument list */
|
|
|
|
|
|
|
|
|
|
next = prev->common.next;
|
|
|
|
|
if (next == op) {
|
|
|
|
|
if (replacement_op) {
|
|
|
|
|
replacement_op->common.parent =
|
|
|
|
|
op->common.parent;
|
|
|
|
|
replacement_op->common.value.
|
|
|
|
|
arg = NULL;
|
|
|
|
|
replacement_op->common.node =
|
|
|
|
|
op->common.node;
|
|
|
|
|
prev->common.next =
|
|
|
|
|
replacement_op;
|
|
|
|
|
replacement_op->common.next =
|
|
|
|
|
op->common.next;
|
|
|
|
|
next = NULL;
|
|
|
|
|
} else {
|
|
|
|
|
prev->common.next =
|
|
|
|
|
op->common.next;
|
|
|
|
|
next = NULL;
|
|
|
|
|
}
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
2005-08-05 11:44:28 +07:00
|
|
|
prev = next;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
cleanup:
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2005-04-19 09:49:35 +07:00
|
|
|
/* Now we can actually delete the subtree rooted at Op */
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ps_delete_parse_tree(op);
|
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-05-26 11:00:00 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
allocate_error:
|
2005-05-26 11:00:00 +07:00
|
|
|
|
|
|
|
|
/* Always delete the subtree, even on error */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ps_delete_parse_tree(op);
|
|
|
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
|
*
|
|
|
|
|
* FUNCTION: acpi_ps_next_parse_state
|
|
|
|
|
*
|
2005-04-19 09:49:35 +07:00
|
|
|
* PARAMETERS: walk_state - Current state
|
|
|
|
|
* Op - Current parse op
|
|
|
|
|
* callback_status - Status from previous operation
|
2005-04-17 05:20:36 +07:00
|
|
|
*
|
|
|
|
|
* RETURN: Status
|
|
|
|
|
*
|
|
|
|
|
* DESCRIPTION: Update the parser state based upon the return exception from
|
|
|
|
|
* the parser callback.
|
|
|
|
|
*
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com>
ACPICA 20050617:
Moved the object cache operations into the OS interface
layer (OSL) to allow the host OS to handle these operations
if desired (for example, the Linux OSL will invoke the
slab allocator). This support is optional; the compile
time define ACPI_USE_LOCAL_CACHE may be used to utilize
the original cache code in the ACPI CA core. The new OSL
interfaces are shown below. See utalloc.c for an example
implementation, and acpiosxf.h for the exact interface
definitions. Thanks to Alexey Starikovskiy.
acpi_os_create_cache
acpi_os_delete_cache
acpi_os_purge_cache
acpi_os_acquire_object
acpi_os_release_object
Modified the interfaces to acpi_os_acquire_lock and
acpi_os_release_lock to return and restore a flags
parameter. This fits better with many OS lock models.
Note: the current execution state (interrupt handler
or not) is no longer passed to these interfaces. If
necessary, the OSL must determine this state by itself, a
simple and fast operation. Thanks to Alexey Starikovskiy.
Fixed a problem in the ACPI table handling where a valid
XSDT was assumed present if the revision of the RSDP
was 2 or greater. According to the ACPI specification,
the XSDT is optional in all cases, and the table manager
therefore now checks for both an RSDP >=2 and a valid
XSDT pointer. Otherwise, the RSDT pointer is used.
Some ACPI 2.0 compliant BIOSs contain only the RSDT.
Fixed an interpreter problem with the Mid() operator in the
case of an input string where the resulting output string
is of zero length. It now correctly returns a valid,
null terminated string object instead of a string object
with a null pointer.
Fixed a problem with the control method argument handling
to allow a store to an Arg object that already contains an
object of type Device. The Device object is now correctly
overwritten. Previously, an error was returned.
ACPICA 20050624:
Modified the new OSL cache interfaces to use ACPI_CACHE_T
as the type for the host-defined cache object. This allows
the OSL implementation to define and type this object in
any manner desired, simplifying the OSL implementation.
For example, ACPI_CACHE_T is defined as kmem_cache_t for
Linux, and should be defined in the OS-specific header
file for other operating systems as required.
Changed the interface to AcpiOsAcquireObject to directly
return the requested object as the function return (instead
of ACPI_STATUS.) This change was made for performance
reasons, since this is the purpose of the interface in the
first place. acpi_os_acquire_object is now similar to the
acpi_os_allocate interface. Thanks to Alexey Starikovskiy.
Modified the initialization sequence in
acpi_initialize_subsystem to call the OSL interface
acpi_osl_initialize first, before any local initialization.
This change was required because the global initialization
now calls OSL interfaces.
Restructured the code base to split some files because
of size and/or because the code logically belonged in a
separate file. New files are listed below.
utilities/utcache.c /* Local cache interfaces */
utilities/utmutex.c /* Local mutex support */
utilities/utstate.c /* State object support */
parser/psloop.c /* Main AML parse loop */
Signed-off-by: Len Brown <len.brown@intel.com>
2005-06-24 11:00:00 +07:00
|
|
|
acpi_status
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ps_next_parse_state(struct acpi_walk_state *walk_state,
|
|
|
|
|
union acpi_parse_object *op,
|
|
|
|
|
acpi_status callback_status)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
2005-08-05 11:44:28 +07:00
|
|
|
struct acpi_parse_state *parser_state = &walk_state->parser_state;
|
|
|
|
|
acpi_status status = AE_CTRL_PENDING;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
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>
2006-04-22 04:15:00 +07:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ps_next_parse_state, op);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
switch (callback_status) {
|
|
|
|
|
case AE_CTRL_TERMINATE:
|
|
|
|
|
/*
|
|
|
|
|
* A control method was terminated via a RETURN statement.
|
|
|
|
|
* The walk of this method is complete.
|
|
|
|
|
*/
|
|
|
|
|
parser_state->aml = parser_state->aml_end;
|
|
|
|
|
status = AE_CTRL_TERMINATE;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case AE_CTRL_BREAK:
|
|
|
|
|
|
|
|
|
|
parser_state->aml = walk_state->aml_last_while;
|
|
|
|
|
walk_state->control_state->common.value = FALSE;
|
2005-12-17 05:05:00 +07:00
|
|
|
status = acpi_ds_result_stack_pop(walk_state);
|
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
|
status = AE_CTRL_BREAK;
|
|
|
|
|
}
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case AE_CTRL_CONTINUE:
|
|
|
|
|
|
|
|
|
|
parser_state->aml = walk_state->aml_last_while;
|
2005-12-17 05:05:00 +07:00
|
|
|
status = acpi_ds_result_stack_pop(walk_state);
|
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
|
status = AE_CTRL_CONTINUE;
|
|
|
|
|
}
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case AE_CTRL_PENDING:
|
|
|
|
|
|
|
|
|
|
parser_state->aml = walk_state->aml_last_while;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
case AE_CTRL_SKIP:
|
|
|
|
|
|
|
|
|
|
parser_state->aml = parser_state->scope->parse_scope.pkg_end;
|
|
|
|
|
status = AE_OK;
|
|
|
|
|
break;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
case AE_CTRL_TRUE:
|
|
|
|
|
/*
|
|
|
|
|
* Predicate of an IF was true, and we are at the matching ELSE.
|
|
|
|
|
* Just close out this package
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
parser_state->aml = acpi_ps_get_next_package_end(parser_state);
|
2005-12-17 05:05:00 +07:00
|
|
|
status = acpi_ds_result_stack_pop(walk_state);
|
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
|
status = AE_CTRL_PENDING;
|
|
|
|
|
}
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case AE_CTRL_FALSE:
|
|
|
|
|
/*
|
|
|
|
|
* Either an IF/WHILE Predicate was false or we encountered a BREAK
|
|
|
|
|
* opcode. In both cases, we do not execute the rest of the
|
|
|
|
|
* package; We simply close out the parent (finishing the walk of
|
|
|
|
|
* this branch of the tree) and continue execution at the parent
|
|
|
|
|
* level.
|
|
|
|
|
*/
|
|
|
|
|
parser_state->aml = parser_state->scope->parse_scope.pkg_end;
|
|
|
|
|
|
|
|
|
|
/* In the case of a BREAK, just force a predicate (if any) to FALSE */
|
|
|
|
|
|
|
|
|
|
walk_state->control_state->common.value = FALSE;
|
|
|
|
|
status = AE_CTRL_END;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case AE_CTRL_TRANSFER:
|
|
|
|
|
|
2005-04-19 09:49:35 +07:00
|
|
|
/* A method call (invocation) -- transfer control */
|
|
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
status = AE_CTRL_TRANSFER;
|
|
|
|
|
walk_state->prev_op = op;
|
|
|
|
|
walk_state->method_call_op = op;
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state->method_call_node =
|
|
|
|
|
(op->common.value.arg)->common.node;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/* Will return value (if any) be used by the caller? */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state->return_used =
|
|
|
|
|
acpi_ds_is_result_used(op, walk_state);
|
2005-04-17 05:20:36 +07:00
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
2005-04-19 09:49:35 +07:00
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
status = callback_status;
|
|
|
|
|
if ((callback_status & AE_CODE_MASK) == AE_CODE_CONTROL) {
|
|
|
|
|
status = AE_OK;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
|
*
|
|
|
|
|
* FUNCTION: acpi_ps_parse_aml
|
|
|
|
|
*
|
2005-04-19 09:49:35 +07:00
|
|
|
* PARAMETERS: walk_state - Current state
|
2005-04-17 05:20:36 +07:00
|
|
|
*
|
|
|
|
|
*
|
|
|
|
|
* RETURN: Status
|
|
|
|
|
*
|
|
|
|
|
* DESCRIPTION: Parse raw AML and return a tree of ops
|
|
|
|
|
*
|
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_status status;
|
|
|
|
|
struct acpi_thread_state *thread;
|
|
|
|
|
struct acpi_thread_state *prev_walk_list = acpi_gbl_current_walk_list;
|
|
|
|
|
struct acpi_walk_state *previous_walk_state;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
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>
2006-04-22 04:15:00 +07:00
|
|
|
ACPI_FUNCTION_TRACE(ps_parse_aml);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
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>
2006-04-22 04:15:00 +07:00
|
|
|
"Entered with WalkState=%p Aml=%p size=%X\n",
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state, walk_state->parser_state.aml,
|
|
|
|
|
walk_state->parser_state.aml_size));
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/* Create and initialize a new thread state */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
thread = acpi_ut_create_thread_state();
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!thread) {
|
2005-08-05 11:44:28 +07:00
|
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
walk_state->thread = thread;
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ds_push_walk_state(walk_state, thread);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* This global allows the AML debugger to get a handle to the currently
|
|
|
|
|
* executing control method.
|
|
|
|
|
*/
|
|
|
|
|
acpi_gbl_current_walk_list = thread;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Execute the walk loop as long as there is a valid Walk State. This
|
|
|
|
|
* handles nested control method invocations without recursion.
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "State=%p\n", walk_state));
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
status = AE_OK;
|
|
|
|
|
while (walk_state) {
|
2005-08-05 11:44:28 +07:00
|
|
|
if (ACPI_SUCCESS(status)) {
|
2005-04-17 05:20:36 +07:00
|
|
|
/*
|
|
|
|
|
* The parse_loop executes AML until the method terminates
|
|
|
|
|
* or calls another method.
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
status = acpi_ps_parse_loop(walk_state);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
|
|
|
|
"Completed one call to walk loop, %s State=%p\n",
|
|
|
|
|
acpi_format_exception(status), walk_state));
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
if (status == AE_CTRL_TRANSFER) {
|
|
|
|
|
/*
|
|
|
|
|
* A method call was detected.
|
|
|
|
|
* Transfer control to the called control method
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
status =
|
|
|
|
|
acpi_ds_call_control_method(thread, walk_state,
|
|
|
|
|
NULL);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* If the transfer to the new method method call worked, a new walk
|
|
|
|
|
* state was created -- get it
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state = acpi_ds_get_current_walk_state(thread);
|
2005-04-17 05:20:36 +07:00
|
|
|
continue;
|
2005-08-05 11:44:28 +07:00
|
|
|
} else if (status == AE_CTRL_TERMINATE) {
|
2005-04-17 05:20:36 +07:00
|
|
|
status = AE_OK;
|
2005-08-05 11:44:28 +07:00
|
|
|
} else if ((status != AE_OK) && (walk_state->method_desc)) {
|
2006-10-02 11:00:00 +07:00
|
|
|
|
2005-11-18 01:07:00 +07:00
|
|
|
/* Either the method parse or actual execution failed */
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2006-01-28 04:43:00 +07:00
|
|
|
ACPI_ERROR_METHOD("Method parse/execution failed",
|
|
|
|
|
walk_state->method_node, NULL,
|
|
|
|
|
status);
|
2005-09-03 04:24:17 +07:00
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
/* Check for possible multi-thread reentrancy problem */
|
|
|
|
|
|
|
|
|
|
if ((status == AE_ALREADY_EXISTS) &&
|
2005-08-05 11:44:28 +07:00
|
|
|
(!walk_state->method_desc->method.semaphore)) {
|
2005-04-17 05:20:36 +07:00
|
|
|
/*
|
2005-11-18 01:07:00 +07:00
|
|
|
* Method tried to create an object twice. The probable cause is
|
|
|
|
|
* that the method cannot handle reentrancy.
|
|
|
|
|
*
|
|
|
|
|
* The method is marked not_serialized, but it tried to create
|
2005-04-19 09:49:35 +07:00
|
|
|
* a named object, causing the second thread entrance to fail.
|
2005-11-18 01:07:00 +07:00
|
|
|
* Workaround this problem by marking the method permanently
|
2005-04-19 09:49:35 +07:00
|
|
|
* as Serialized.
|
2005-04-17 05:20:36 +07:00
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state->method_desc->method.method_flags |=
|
|
|
|
|
AML_METHOD_SERIALIZED;
|
2005-04-17 05:20:36 +07:00
|
|
|
walk_state->method_desc->method.concurrency = 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We are done with this walk, move on to the parent if any */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state = acpi_ds_pop_walk_state(thread);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/* Reset the current scope to the beginning of scope stack */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ds_scope_stack_clear(walk_state);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/*
|
2005-11-18 01:07:00 +07:00
|
|
|
* If we just returned from the execution of a control method or if we
|
|
|
|
|
* encountered an error during the method parse phase, there's lots of
|
|
|
|
|
* cleanup to do
|
2005-04-17 05:20:36 +07:00
|
|
|
*/
|
2005-11-18 01:07:00 +07:00
|
|
|
if (((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) ==
|
|
|
|
|
ACPI_PARSE_EXECUTE) || (ACPI_FAILURE(status))) {
|
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>
2006-04-22 04:15:00 +07:00
|
|
|
acpi_ds_terminate_control_method(walk_state->
|
|
|
|
|
method_desc,
|
|
|
|
|
walk_state);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Delete this walk state and all linked control states */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ps_cleanup_scope(&walk_state->parser_state);
|
2005-04-17 05:20:36 +07:00
|
|
|
previous_walk_state = walk_state;
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
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>
2006-04-22 04:15:00 +07:00
|
|
|
"ReturnValue=%p, ImplicitValue=%p State=%p\n",
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state->return_desc,
|
|
|
|
|
walk_state->implicit_return_obj, walk_state));
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
|
/* Check if we have restarted a preempted walk */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
walk_state = acpi_ds_get_current_walk_state(thread);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (walk_state) {
|
2005-08-05 11:44:28 +07:00
|
|
|
if (ACPI_SUCCESS(status)) {
|
2005-04-17 05:20:36 +07:00
|
|
|
/*
|
|
|
|
|
* There is another walk state, restart it.
|
|
|
|
|
* If the method return value is not used by the parent,
|
|
|
|
|
* The object is deleted
|
|
|
|
|
*/
|
|
|
|
|
if (!previous_walk_state->return_desc) {
|
2005-08-05 11:44:28 +07:00
|
|
|
status =
|
|
|
|
|
acpi_ds_restart_control_method
|
|
|
|
|
(walk_state,
|
|
|
|
|
previous_walk_state->
|
|
|
|
|
implicit_return_obj);
|
|
|
|
|
} else {
|
2005-04-17 05:20:36 +07:00
|
|
|
/*
|
|
|
|
|
* We have a valid return value, delete any implicit
|
|
|
|
|
* return value.
|
|
|
|
|
*/
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ds_clear_implicit_return
|
|
|
|
|
(previous_walk_state);
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
status =
|
|
|
|
|
acpi_ds_restart_control_method
|
|
|
|
|
(walk_state,
|
|
|
|
|
previous_walk_state->return_desc);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
2005-08-05 11:44:28 +07:00
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
|
walk_state->walk_type |=
|
|
|
|
|
ACPI_WALK_METHOD_RESTART;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
2005-08-05 11:44:28 +07:00
|
|
|
} else {
|
2005-04-17 05:20:36 +07:00
|
|
|
/* On error, delete any return object */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ut_remove_reference(previous_walk_state->
|
|
|
|
|
return_desc);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Just completed a 1st-level method, save the final internal return
|
|
|
|
|
* value (if any)
|
|
|
|
|
*/
|
|
|
|
|
else if (previous_walk_state->caller_return_desc) {
|
|
|
|
|
if (previous_walk_state->implicit_return_obj) {
|
2005-04-19 09:49:35 +07:00
|
|
|
*(previous_walk_state->caller_return_desc) =
|
2005-08-05 11:44:28 +07:00
|
|
|
previous_walk_state->implicit_return_obj;
|
|
|
|
|
} else {
|
|
|
|
|
/* NULL if no return value */
|
2005-04-17 05:20:36 +07:00
|
|
|
|
2005-04-19 09:49:35 +07:00
|
|
|
*(previous_walk_state->caller_return_desc) =
|
2005-08-05 11:44:28 +07:00
|
|
|
previous_walk_state->return_desc;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
2005-08-05 11:44:28 +07:00
|
|
|
} else {
|
2005-04-17 05:20:36 +07:00
|
|
|
if (previous_walk_state->return_desc) {
|
2006-10-02 11:00:00 +07:00
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
/* Caller doesn't want it, must delete it */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ut_remove_reference(previous_walk_state->
|
|
|
|
|
return_desc);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
if (previous_walk_state->implicit_return_obj) {
|
2006-10-02 11:00:00 +07:00
|
|
|
|
2005-04-17 05:20:36 +07:00
|
|
|
/* Caller doesn't want it, must delete it */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ut_remove_reference(previous_walk_state->
|
|
|
|
|
implicit_return_obj);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ds_delete_walk_state(previous_walk_state);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Normal exit */
|
|
|
|
|
|
2005-08-05 11:44:28 +07:00
|
|
|
acpi_ex_release_all_mutexes(thread);
|
|
|
|
|
acpi_ut_delete_generic_state(ACPI_CAST_PTR
|
|
|
|
|
(union acpi_generic_state, thread));
|
2005-04-17 05:20:36 +07:00
|
|
|
acpi_gbl_current_walk_list = prev_walk_list;
|
2005-08-05 11:44:28 +07:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|