2005-04-17 06:20:36 +08:00
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/******************************************************************************
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*
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* Module Name: utxface - External interfaces for "global" ACPI functions
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*
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*****************************************************************************/
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/*
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2007-02-03 00:48:24 +08:00
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* Copyright (C) 2000 - 2007, R. Byron Moore
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2005-04-17 06:20:36 +08:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acevents.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acdebug.h>
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#define _COMPONENT ACPI_UTILITIES
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2005-08-05 12:44:28 +08:00
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ACPI_MODULE_NAME("utxface")
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2005-04-17 06:20:36 +08:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_initialize_subsystem
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Initializes all global variables. This is the first function
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* called, so any early initialization belongs here.
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*
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******************************************************************************/
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2005-08-05 12:44:28 +08:00
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acpi_status acpi_initialize_subsystem(void)
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2005-04-17 06:20:36 +08:00
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{
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2005-08-05 12:44:28 +08:00
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acpi_status status;
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2005-04-19 10:49:35 +08:00
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|
ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-22 05:15:00 +08:00
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ACPI_FUNCTION_TRACE(acpi_initialize_subsystem);
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2005-04-17 06:20:36 +08:00
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2007-02-03 00:48:21 +08:00
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acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE;
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2005-08-05 12:44:28 +08:00
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ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace());
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2005-04-17 06:20:36 +08:00
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/* Initialize the OS-Dependent layer */
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2005-08-05 12:44:28 +08:00
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status = acpi_os_initialize();
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if (ACPI_FAILURE(status)) {
|
2006-01-28 05:43:00 +08:00
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ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization"));
|
2005-08-05 12:44:28 +08:00
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return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
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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 12:00:00 +08:00
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|
/* Initialize all globals used by the subsystem */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
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|
|
acpi_ut_init_globals();
|
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 12:00:00 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/* Create the default mutex objects */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ut_mutex_initialize();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
2006-01-28 05:43:00 +08:00
|
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
|
|
"During Global Mutex creation"));
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize the namespace manager and
|
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|
|
* the root of the namespace tree
|
|
|
|
*/
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ns_root_initialize();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
2006-01-28 05:43:00 +08:00
|
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
|
|
"During Namespace initialization"));
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* If configured, initialize the AML debugger */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUGGER_EXEC(status = acpi_db_initialize());
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2006-10-03 12:00:00 +08:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_initialize_subsystem)
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_enable_subsystem
|
|
|
|
*
|
|
|
|
* PARAMETERS: Flags - Init/enable Options
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Completes the subsystem initialization including hardware.
|
|
|
|
* Puts system into ACPI mode if it isn't already.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status acpi_enable_subsystem(u32 flags)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status status = AE_OK;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
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 05:15:00 +08:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Enable ACPI mode */
|
|
|
|
|
|
|
|
if (!(flags & ACPI_NO_ACPI_ENABLE)) {
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
|
|
"[Init] Going into ACPI mode\n"));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
acpi_gbl_original_mode = acpi_hw_get_mode();
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_enable();
|
|
|
|
if (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 05:15:00 +08:00
|
|
|
ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Install the default op_region handlers. These are installed unless
|
|
|
|
* other handlers have already been installed via the
|
|
|
|
* install_address_space_handler interface.
|
|
|
|
*/
|
|
|
|
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
|
|
"[Init] Installing default address space handlers\n"));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ev_install_region_handlers();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize ACPI Event handling (Fixed and General Purpose)
|
|
|
|
*
|
2005-11-02 13:00:00 +08:00
|
|
|
* Note1: We must have the hardware and events initialized before we can
|
|
|
|
* execute any control methods safely. Any control method can require
|
|
|
|
* ACPI hardware support, so the hardware must be fully initialized before
|
|
|
|
* any method execution!
|
|
|
|
*
|
|
|
|
* Note2: Fixed events are initialized and enabled here. GPEs are
|
|
|
|
* initialized, but cannot be enabled until after the hardware is
|
|
|
|
* completely initialized (SCI and global_lock activated)
|
2005-04-17 06:20:36 +08:00
|
|
|
*/
|
|
|
|
if (!(flags & ACPI_NO_EVENT_INIT)) {
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
|
|
"[Init] Initializing ACPI events\n"));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ev_initialize_events();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-11-02 13:00:00 +08:00
|
|
|
/*
|
|
|
|
* Install the SCI handler and Global Lock handler. This completes the
|
|
|
|
* hardware initialization.
|
|
|
|
*/
|
2005-04-17 06:20:36 +08:00
|
|
|
if (!(flags & ACPI_NO_HANDLER_INIT)) {
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
|
|
"[Init] Installing SCI/GL handlers\n"));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ev_install_xrupt_handlers();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-11-02 13:00:00 +08:00
|
|
|
/*
|
|
|
|
* Complete the GPE initialization for the GPE blocks defined in the FADT
|
|
|
|
* (GPE block 0 and 1).
|
|
|
|
*
|
|
|
|
* Note1: This is where the _PRW methods are executed for the GPEs. These
|
|
|
|
* methods can only be executed after the SCI and Global Lock handlers are
|
|
|
|
* installed and initialized.
|
|
|
|
*
|
|
|
|
* Note2: Currently, there seems to be no need to run the _REG methods
|
|
|
|
* before execution of the _PRW methods and enabling of the GPEs.
|
|
|
|
*/
|
|
|
|
if (!(flags & ACPI_NO_EVENT_INIT)) {
|
|
|
|
status = acpi_ev_install_fadt_gpes();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return (status);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2006-10-03 12:00:00 +08:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_enable_subsystem)
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_initialize_objects
|
|
|
|
*
|
|
|
|
* PARAMETERS: Flags - Init/enable Options
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Completes namespace initialization by initializing device
|
|
|
|
* objects and executing AML code for Regions, buffers, etc.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status acpi_initialize_objects(u32 flags)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status status = AE_OK;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
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 05:15:00 +08:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_initialize_objects);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Run all _REG methods
|
|
|
|
*
|
2005-11-02 13:00:00 +08:00
|
|
|
* Note: Any objects accessed by the _REG methods will be automatically
|
|
|
|
* initialized, even if they contain executable AML (see the call to
|
|
|
|
* acpi_ns_initialize_objects below).
|
2005-04-17 06:20:36 +08:00
|
|
|
*/
|
|
|
|
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
ACPI: ACPICA 20060421
Removed a device initialization optimization introduced in
20051216 where the _STA method was not run unless an _INI
was also present for the same device. This optimization
could cause problems because it could allow _INI methods
to be run within a not-present device subtree (If a
not-present device had no _INI, _STA would not be run,
the not-present status would not be discovered, and the
children of the device would be incorrectly traversed.)
Implemented a new _STA optimization where namespace
subtrees that do not contain _INI are identified and
ignored during device initialization. Selectively running
_STA can significantly improve boot time on large machines
(with assistance from Len Brown.)
Implemented support for the device initialization case
where the returned _STA flags indicate a device not-present
but functioning. In this case, _INI is not run, but the
device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support
in order to conform to MS behavior. The value written to
the Index Register is not simply a byte offset, it is a
byte offset in units of the access width of the parent
Index Field. (Fiodor Suietov)
Defined and deployed a new OSL interface,
acpi_os_validate_address(). This interface is called during
the creation of all AML operation regions, and allows
the host OS to exert control over what addresses it will
allow the AML code to access. Operation Regions whose
addresses are disallowed will cause a runtime exception
when they are actually accessed (will not affect or abort
table loading.)
Defined and deployed a new OSL interface,
acpi_os_validate_interface(). This interface allows the host OS
to match the various "optional" interface/behavior strings
for the _OSI predefined control method as appropriate
(with assistance from Bjorn Helgaas.)
Restructured and corrected various problems in the
exception handling code paths within DsCallControlMethod
and DsTerminateControlMethod in dsmethod (with assistance
from Takayoshi Kochi.)
Modified the Linux source converter to ignore quoted string
literals while converting identifiers from mixed to lower
case. This will correct problems with the disassembler
and other areas where such strings must not be modified.
The ACPI_FUNCTION_* macros no longer require quotes around
the function name. This allows the Linux source converter
to convert the names, now that the converter ignores
quoted strings.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-04-22 05:15:00 +08:00
|
|
|
"[Init] Executing _REG OpRegion methods\n"));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ev_initialize_op_regions();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2005-11-02 13:00:00 +08:00
|
|
|
* Initialize the objects that remain uninitialized. This runs the
|
|
|
|
* executable AML that may be part of the declaration of these objects:
|
|
|
|
* operation_regions, buffer_fields, Buffers, and Packages.
|
2005-04-17 06:20:36 +08:00
|
|
|
*/
|
|
|
|
if (!(flags & ACPI_NO_OBJECT_INIT)) {
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
|
|
"[Init] Completing Initialization of ACPI Objects\n"));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ns_initialize_objects();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2005-11-02 13:00:00 +08:00
|
|
|
* Initialize all device objects in the namespace. This runs the device
|
|
|
|
* _STA and _INI methods.
|
2005-04-17 06:20:36 +08:00
|
|
|
*/
|
|
|
|
if (!(flags & ACPI_NO_DEVICE_INIT)) {
|
2005-08-05 12:44:28 +08:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
|
|
"[Init] Initializing ACPI Devices\n"));
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ns_initialize_devices();
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Empty the caches (delete the cached objects) on the assumption that
|
|
|
|
* the table load filled them up more than they will be at runtime --
|
|
|
|
* thus wasting non-paged memory.
|
|
|
|
*/
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_purge_cached_objects();
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK;
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2006-10-03 12:00:00 +08:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_initialize_objects)
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_terminate
|
|
|
|
*
|
|
|
|
* PARAMETERS: None
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Shutdown the ACPI subsystem. Release all resources.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status acpi_terminate(void)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status status;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
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 05:15:00 +08:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_terminate);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Terminate the AML Debugger if present */
|
|
|
|
|
|
|
|
ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);
|
|
|
|
|
|
|
|
/* Shutdown and free all resources */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_ut_subsystem_shutdown();
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Free the mutex objects */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_ut_mutex_terminate();
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
#ifdef ACPI_DEBUGGER
|
|
|
|
|
|
|
|
/* Shut down the debugger */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_db_terminate();
|
2005-04-17 06:20:36 +08:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Now we can shutdown the OS-dependent layer */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_os_terminate();
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2006-10-03 12:00:00 +08:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_terminate)
|
2005-04-17 06:20:36 +08:00
|
|
|
#ifdef ACPI_FUTURE_USAGE
|
2005-04-19 10:49:35 +08:00
|
|
|
/*******************************************************************************
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
|
|
|
* FUNCTION: acpi_subsystem_status
|
|
|
|
*
|
|
|
|
* PARAMETERS: None
|
|
|
|
*
|
|
|
|
* RETURN: Status of the ACPI subsystem
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Other drivers that use the ACPI subsystem should call this
|
2005-04-19 10:49:35 +08:00
|
|
|
* before making any other calls, to ensure the subsystem
|
|
|
|
* initialized successfully.
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
2005-04-19 10:49:35 +08:00
|
|
|
******************************************************************************/
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status acpi_subsystem_status(void)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-04-19 10:49:35 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
if (acpi_gbl_startup_flags & ACPI_INITIALIZED_OK) {
|
|
|
|
return (AE_OK);
|
2005-08-05 12:44:28 +08:00
|
|
|
} else {
|
2005-04-17 06:20:36 +08:00
|
|
|
return (AE_ERROR);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-10-03 12:00:00 +08:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_subsystem_status)
|
|
|
|
|
2005-04-19 10:49:35 +08:00
|
|
|
/*******************************************************************************
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
|
|
|
* FUNCTION: acpi_get_system_info
|
|
|
|
*
|
2005-04-19 10:49:35 +08:00
|
|
|
* PARAMETERS: out_buffer - A buffer to receive the resources for the
|
|
|
|
* device
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
|
|
|
* RETURN: Status - the status of the call
|
|
|
|
*
|
|
|
|
* DESCRIPTION: This function is called to get information about the current
|
|
|
|
* state of the ACPI subsystem. It will return system information
|
|
|
|
* in the out_buffer.
|
|
|
|
*
|
|
|
|
* If the function fails an appropriate status will be returned
|
|
|
|
* and the value of out_buffer is undefined.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status acpi_get_system_info(struct acpi_buffer * out_buffer)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-08-05 12:44:28 +08:00
|
|
|
struct acpi_system_info *info_ptr;
|
|
|
|
acpi_status status;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
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 05:15:00 +08:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_get_system_info);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status = acpi_ut_validate_buffer(out_buffer);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Validate/Allocate/Clear caller buffer */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
status =
|
|
|
|
acpi_ut_initialize_buffer(out_buffer,
|
|
|
|
sizeof(struct acpi_system_info));
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Populate the return buffer
|
|
|
|
*/
|
2005-08-05 12:44:28 +08:00
|
|
|
info_ptr = (struct acpi_system_info *)out_buffer->pointer;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
info_ptr->acpi_ca_version = ACPI_CA_VERSION;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* System flags (ACPI capabilities) */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
info_ptr->flags = ACPI_SYS_MODE_ACPI;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Timer resolution - 24 or 32 bits */
|
|
|
|
|
2007-02-03 00:48:18 +08:00
|
|
|
if (acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) {
|
2005-04-17 06:20:36 +08:00
|
|
|
info_ptr->timer_resolution = 24;
|
2005-08-05 12:44:28 +08:00
|
|
|
} else {
|
2005-04-17 06:20:36 +08:00
|
|
|
info_ptr->timer_resolution = 32;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Clear the reserved fields */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
info_ptr->reserved1 = 0;
|
|
|
|
info_ptr->reserved2 = 0;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Current debug levels */
|
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
info_ptr->debug_layer = acpi_dbg_layer;
|
|
|
|
info_ptr->debug_level = acpi_dbg_level;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2006-10-03 12:00:00 +08:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_system_info)
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_install_initialization_handler
|
|
|
|
*
|
|
|
|
* PARAMETERS: Handler - Callback procedure
|
2005-04-19 10:49:35 +08:00
|
|
|
* Function - Not (currently) used, see below
|
2005-04-17 06:20:36 +08:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Install an initialization handler
|
|
|
|
*
|
|
|
|
* TBD: When a second function is added, must save the Function also.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
acpi_status
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
|
|
|
|
if (!handler) {
|
|
|
|
return (AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (acpi_gbl_init_handler) {
|
|
|
|
return (AE_ALREADY_EXISTS);
|
|
|
|
}
|
|
|
|
|
|
|
|
acpi_gbl_init_handler = handler;
|
|
|
|
return AE_OK;
|
|
|
|
}
|
|
|
|
|
2006-10-03 12:00:00 +08:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
|
2005-08-05 12:44:28 +08:00
|
|
|
#endif /* ACPI_FUTURE_USAGE */
|
2005-04-17 06:20:36 +08:00
|
|
|
/*****************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_purge_cached_objects
|
|
|
|
*
|
|
|
|
* PARAMETERS: None
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Empty all caches (delete the cached objects)
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
2005-08-05 12:44:28 +08:00
|
|
|
acpi_status acpi_purge_cached_objects(void)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
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 05:15:00 +08:00
|
|
|
ACPI_FUNCTION_TRACE(acpi_purge_cached_objects);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2005-08-05 12:44:28 +08:00
|
|
|
(void)acpi_os_purge_cache(acpi_gbl_state_cache);
|
|
|
|
(void)acpi_os_purge_cache(acpi_gbl_operand_cache);
|
|
|
|
(void)acpi_os_purge_cache(acpi_gbl_ps_node_cache);
|
|
|
|
(void)acpi_os_purge_cache(acpi_gbl_ps_node_ext_cache);
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2006-10-03 12:00:00 +08:00
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_purge_cached_objects)
|