2018-03-15 02:13:07 +03:00
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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2005-04-17 02:20:36 +04:00
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/******************************************************************************
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*
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* Module Name: nsutils - Utilities for accessing ACPI namespace, accessing
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* parents and siblings and Scope manipulation
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*
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2019-01-14 20:55:25 +03:00
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* Copyright (C) 2000 - 2019, Intel Corp.
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2005-04-17 02:20:36 +04:00
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*
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2018-03-15 02:13:07 +03:00
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*****************************************************************************/
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2005-04-17 02:20:36 +04:00
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#include <acpi/acpi.h>
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2009-01-09 08:30:03 +03:00
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#include "accommon.h"
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#include "acnamesp.h"
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#include "amlcode.h"
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2005-04-17 02:20:36 +04:00
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#define _COMPONENT ACPI_NAMESPACE
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2005-08-05 08:44:28 +04:00
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ACPI_MODULE_NAME("nsutils")
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2005-04-17 02:20:36 +04:00
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2005-04-19 06:49:35 +04:00
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/* Local prototypes */
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#ifdef ACPI_OBSOLETE_FUNCTIONS
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2005-08-05 08:44:28 +04:00
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acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node *node_to_search);
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2005-04-19 06:49:35 +04:00
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#endif
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2005-04-17 02:20:36 +04:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_print_node_pathname
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*
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2012-07-12 05:40:10 +04:00
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* PARAMETERS: node - Object
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* message - Prefix message
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2005-04-17 02:20:36 +04:00
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*
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* DESCRIPTION: Print an object's full namespace pathname
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* Manages allocation/freeing of a pathname buffer
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*
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******************************************************************************/
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void
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2008-06-10 09:55:53 +04:00
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acpi_ns_print_node_pathname(struct acpi_namespace_node *node,
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const char *message)
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2005-04-17 02:20:36 +04:00
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{
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2005-08-05 08:44:28 +04:00
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struct acpi_buffer buffer;
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acpi_status status;
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2005-04-17 02:20:36 +04:00
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if (!node) {
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2005-08-05 08:44:28 +04:00
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acpi_os_printf("[NULL NAME]");
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2005-04-17 02:20:36 +04:00
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return;
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}
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/* Convert handle to full pathname and print it (with supplied message) */
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buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
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2015-08-25 05:30:41 +03:00
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status = acpi_ns_handle_to_pathname(node, &buffer, TRUE);
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2005-08-05 08:44:28 +04:00
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if (ACPI_SUCCESS(status)) {
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2005-04-19 06:49:35 +04:00
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if (message) {
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2005-08-05 08:44:28 +04:00
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acpi_os_printf("%s ", message);
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2005-04-17 02:20:36 +04:00
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}
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2017-06-05 11:42:28 +03:00
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acpi_os_printf("%s", (char *)buffer.pointer);
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2006-10-03 08:00:00 +04:00
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ACPI_FREE(buffer.pointer);
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2005-04-17 02:20:36 +04:00
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_get_type
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*
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2012-07-12 05:40:10 +04:00
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* PARAMETERS: node - Parent Node to be examined
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2005-04-17 02:20:36 +04:00
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*
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* RETURN: Type field from Node whose handle is passed
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*
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2005-04-19 06:49:35 +04:00
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* DESCRIPTION: Return the type of a Namespace node
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*
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2005-04-17 02:20:36 +04:00
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******************************************************************************/
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2005-08-05 08:44:28 +04:00
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acpi_object_type acpi_ns_get_type(struct acpi_namespace_node * node)
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2005-04-17 02:20:36 +04:00
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{
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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 01:15:00 +04:00
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ACPI_FUNCTION_TRACE(ns_get_type);
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2005-04-17 02:20:36 +04:00
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if (!node) {
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2006-01-28 00:43:00 +03:00
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ACPI_WARNING((AE_INFO, "Null Node parameter"));
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2013-03-08 13:22:23 +04:00
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return_UINT8(ACPI_TYPE_ANY);
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2005-04-17 02:20:36 +04:00
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}
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2013-03-08 13:22:23 +04:00
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return_UINT8(node->type);
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2005-04-17 02:20:36 +04:00
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_local
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*
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2012-07-12 05:40:10 +04:00
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* PARAMETERS: type - A namespace object type
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2005-04-17 02:20:36 +04:00
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*
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* RETURN: LOCAL if names must be found locally in objects of the
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* passed type, 0 if enclosing scopes should be searched
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*
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2005-04-19 06:49:35 +04:00
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* DESCRIPTION: Returns scope rule for the given object type.
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*
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2005-04-17 02:20:36 +04:00
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******************************************************************************/
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2005-08-05 08:44:28 +04:00
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u32 acpi_ns_local(acpi_object_type type)
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2005-04-17 02:20:36 +04:00
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{
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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 01:15:00 +04:00
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ACPI_FUNCTION_TRACE(ns_local);
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2005-04-17 02:20:36 +04:00
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2005-08-05 08:44:28 +04:00
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if (!acpi_ut_valid_object_type(type)) {
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2006-10-02 08:00:00 +04:00
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2005-04-17 02:20:36 +04:00
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/* Type code out of range */
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2010-03-05 12:56:40 +03:00
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ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type));
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2013-03-08 13:22:23 +04:00
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return_UINT32(ACPI_NS_NORMAL);
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2005-04-17 02:20:36 +04:00
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}
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2013-03-08 13:22:23 +04:00
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return_UINT32(acpi_gbl_ns_properties[type] & ACPI_NS_LOCAL);
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2005-04-17 02:20:36 +04:00
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_get_internal_name_length
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*
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2012-07-12 05:40:10 +04:00
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* PARAMETERS: info - Info struct initialized with the
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2005-04-17 02:20:36 +04:00
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* external name pointer.
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*
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2005-04-19 06:49:35 +04:00
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* RETURN: None
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2005-04-17 02:20:36 +04:00
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*
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* DESCRIPTION: Calculate the length of the internal (AML) namestring
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* corresponding to the external (ASL) namestring.
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*
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******************************************************************************/
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2005-08-05 08:44:28 +04:00
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void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info)
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2005-04-17 02:20:36 +04:00
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{
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2008-06-10 09:55:53 +04:00
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const char *next_external_char;
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2005-08-05 08:44:28 +04:00
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u32 i;
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2005-04-17 02:20:36 +04:00
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2005-08-05 08:44:28 +04:00
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ACPI_FUNCTION_ENTRY();
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2005-04-17 02:20:36 +04:00
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next_external_char = info->external_name;
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info->num_carats = 0;
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info->num_segments = 0;
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info->fully_qualified = FALSE;
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/*
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2015-12-29 08:54:36 +03:00
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* For the internal name, the required length is 4 bytes per segment,
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* plus 1 each for root_prefix, multi_name_prefix_op, segment count,
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* trailing null (which is not really needed, but no there's harm in
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* putting it there)
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2005-04-17 02:20:36 +04:00
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*
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* strlen() + 1 covers the first name_seg, which has no path separator
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*/
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2012-12-31 04:05:17 +04:00
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if (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
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2005-04-17 02:20:36 +04:00
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info->fully_qualified = TRUE;
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next_external_char++;
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2008-11-13 05:54:39 +03:00
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/* Skip redundant root_prefix, like \\_SB.PCI0.SBRG.EC0 */
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2012-12-31 04:05:17 +04:00
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while (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
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2008-11-13 05:54:39 +03:00
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next_external_char++;
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}
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2005-08-05 08:44:28 +04:00
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} else {
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2009-03-06 05:05:18 +03:00
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/* Handle Carat prefixes */
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2012-12-31 04:05:17 +04:00
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while (ACPI_IS_PARENT_PREFIX(*next_external_char)) {
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2005-04-17 02:20:36 +04:00
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info->num_carats++;
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next_external_char++;
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}
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}
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/*
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* Determine the number of ACPI name "segments" by counting the number of
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* path separators within the string. Start with one segment since the
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* segment count is [(# separators) + 1], and zero separators is ok.
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*/
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if (*next_external_char) {
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info->num_segments = 1;
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for (i = 0; next_external_char[i]; i++) {
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2012-12-31 04:05:17 +04:00
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if (ACPI_IS_PATH_SEPARATOR(next_external_char[i])) {
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2005-04-17 02:20:36 +04:00
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info->num_segments++;
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}
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}
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}
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info->length = (ACPI_NAME_SIZE * info->num_segments) +
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2005-08-05 08:44:28 +04:00
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4 + info->num_carats;
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2005-04-17 02:20:36 +04:00
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info->next_external_char = next_external_char;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_build_internal_name
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*
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2012-07-12 05:40:10 +04:00
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* PARAMETERS: info - Info struct fully initialized
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2005-04-17 02:20:36 +04:00
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*
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* RETURN: Status
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*
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* DESCRIPTION: Construct the internal (AML) namestring
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* corresponding to the external (ASL) namestring.
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*
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******************************************************************************/
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2005-08-05 08:44:28 +04:00
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acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
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2005-04-17 02:20:36 +04:00
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{
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2005-08-05 08:44:28 +04:00
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u32 num_segments = info->num_segments;
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char *internal_name = info->internal_name;
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2008-06-10 09:55:53 +04:00
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const char *external_name = info->next_external_char;
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2005-08-05 08:44:28 +04:00
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char *result = NULL;
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2008-06-10 09:42:13 +04:00
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u32 i;
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2005-04-17 02:20:36 +04:00
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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 01:15:00 +04:00
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ACPI_FUNCTION_TRACE(ns_build_internal_name);
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2005-04-17 02:20:36 +04:00
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/* Setup the correct prefixes, counts, and pointers */
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if (info->fully_qualified) {
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2012-12-31 04:05:17 +04:00
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internal_name[0] = AML_ROOT_PREFIX;
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2005-04-17 02:20:36 +04:00
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if (num_segments <= 1) {
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result = &internal_name[1];
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2005-08-05 08:44:28 +04:00
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} else if (num_segments == 2) {
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2005-04-17 02:20:36 +04:00
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internal_name[1] = AML_DUAL_NAME_PREFIX;
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result = &internal_name[2];
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2005-08-05 08:44:28 +04:00
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} else {
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2017-04-26 11:18:40 +03:00
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internal_name[1] = AML_MULTI_NAME_PREFIX;
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2005-08-05 08:44:28 +04:00
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internal_name[2] = (char)num_segments;
|
2005-04-17 02:20:36 +04:00
|
|
|
result = &internal_name[3];
|
|
|
|
}
|
2005-08-05 08:44:28 +04:00
|
|
|
} else {
|
2005-04-17 02:20:36 +04:00
|
|
|
/*
|
|
|
|
* Not fully qualified.
|
|
|
|
* Handle Carats first, then append the name segments
|
|
|
|
*/
|
|
|
|
i = 0;
|
|
|
|
if (info->num_carats) {
|
|
|
|
for (i = 0; i < info->num_carats; i++) {
|
2012-12-31 04:05:17 +04:00
|
|
|
internal_name[i] = AML_PARENT_PREFIX;
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (num_segments <= 1) {
|
|
|
|
result = &internal_name[i];
|
2005-08-05 08:44:28 +04:00
|
|
|
} else if (num_segments == 2) {
|
2005-04-17 02:20:36 +04:00
|
|
|
internal_name[i] = AML_DUAL_NAME_PREFIX;
|
2016-05-05 07:57:53 +03:00
|
|
|
result = &internal_name[(acpi_size)i + 1];
|
2005-08-05 08:44:28 +04:00
|
|
|
} else {
|
2017-04-26 11:18:40 +03:00
|
|
|
internal_name[i] = AML_MULTI_NAME_PREFIX;
|
2016-05-05 07:57:53 +03:00
|
|
|
internal_name[(acpi_size)i + 1] = (char)num_segments;
|
|
|
|
result = &internal_name[(acpi_size)i + 2];
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Build the name (minus path separators) */
|
|
|
|
|
|
|
|
for (; num_segments; num_segments--) {
|
|
|
|
for (i = 0; i < ACPI_NAME_SIZE; i++) {
|
2012-12-31 04:05:17 +04:00
|
|
|
if (ACPI_IS_PATH_SEPARATOR(*external_name) ||
|
2005-08-05 08:44:28 +04:00
|
|
|
(*external_name == 0)) {
|
2006-10-02 08:00:00 +04:00
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
/* Pad the segment with underscore(s) if segment is short */
|
|
|
|
|
|
|
|
result[i] = '_';
|
2005-08-05 08:44:28 +04:00
|
|
|
} else {
|
2005-04-17 02:20:36 +04:00
|
|
|
/* Convert the character to uppercase and save it */
|
|
|
|
|
2015-07-01 09:45:11 +03:00
|
|
|
result[i] = (char)toupper((int)*external_name);
|
2005-04-17 02:20:36 +04:00
|
|
|
external_name++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now we must have a path separator, or the pathname is bad */
|
|
|
|
|
2012-12-31 04:05:17 +04:00
|
|
|
if (!ACPI_IS_PATH_SEPARATOR(*external_name) &&
|
2005-08-05 08:44:28 +04:00
|
|
|
(*external_name != 0)) {
|
2012-03-21 05:44:00 +04:00
|
|
|
return_ACPI_STATUS(AE_BAD_PATHNAME);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Move on the next segment */
|
|
|
|
|
|
|
|
external_name++;
|
|
|
|
result += ACPI_NAME_SIZE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Terminate the string */
|
|
|
|
|
|
|
|
*result = 0;
|
|
|
|
|
|
|
|
if (info->fully_qualified) {
|
2005-08-05 08:44:28 +04:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
|
|
"Returning [%p] (abs) \"\\%s\"\n",
|
|
|
|
internal_name, internal_name));
|
|
|
|
} else {
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n",
|
|
|
|
internal_name, internal_name));
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ns_internalize_name
|
|
|
|
*
|
|
|
|
* PARAMETERS: *external_name - External representation of name
|
2012-07-12 05:40:10 +04:00
|
|
|
* **Converted name - Where to return the resulting
|
2005-04-17 02:20:36 +04:00
|
|
|
* internal represention of the name
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0")
|
|
|
|
* to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
|
|
|
|
*
|
|
|
|
*******************************************************************************/
|
|
|
|
|
2008-06-10 09:55:53 +04:00
|
|
|
acpi_status
|
|
|
|
acpi_ns_internalize_name(const char *external_name, char **converted_name)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2005-08-05 08:44:28 +04:00
|
|
|
char *internal_name;
|
|
|
|
struct acpi_namestring_info info;
|
|
|
|
acpi_status status;
|
2005-04-17 02:20:36 +04:00
|
|
|
|
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 01:15:00 +04:00
|
|
|
ACPI_FUNCTION_TRACE(ns_internalize_name);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
if ((!external_name) || (*external_name == 0) || (!converted_name)) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Get the length of the new internal name */
|
|
|
|
|
|
|
|
info.external_name = external_name;
|
2005-08-05 08:44:28 +04:00
|
|
|
acpi_ns_get_internal_name_length(&info);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
/* We need a segment to store the internal name */
|
|
|
|
|
2006-10-03 08:00:00 +04:00
|
|
|
internal_name = ACPI_ALLOCATE_ZEROED(info.length);
|
2005-04-17 02:20:36 +04:00
|
|
|
if (!internal_name) {
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Build the name */
|
|
|
|
|
|
|
|
info.internal_name = internal_name;
|
2005-08-05 08:44:28 +04:00
|
|
|
status = acpi_ns_build_internal_name(&info);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
2006-10-03 08:00:00 +04:00
|
|
|
ACPI_FREE(internal_name);
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
*converted_name = internal_name;
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ns_externalize_name
|
|
|
|
*
|
2005-04-19 06:49:35 +04:00
|
|
|
* PARAMETERS: internal_name_length - Lenth of the internal name below
|
|
|
|
* internal_name - Internal representation of name
|
|
|
|
* converted_name_length - Where the length is returned
|
|
|
|
* converted_name - Where the resulting external name
|
|
|
|
* is returned
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
|
2005-04-19 06:49:35 +04:00
|
|
|
* to its external (printable) form (e.g. "\_PR_.CPU0")
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status
|
2005-08-05 08:44:28 +04:00
|
|
|
acpi_ns_externalize_name(u32 internal_name_length,
|
2008-06-10 09:55:53 +04:00
|
|
|
const char *internal_name,
|
2005-08-05 08:44:28 +04:00
|
|
|
u32 * converted_name_length, char **converted_name)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2008-06-10 09:42:13 +04:00
|
|
|
u32 names_index = 0;
|
|
|
|
u32 num_segments = 0;
|
|
|
|
u32 required_length;
|
|
|
|
u32 prefix_length = 0;
|
|
|
|
u32 i = 0;
|
|
|
|
u32 j = 0;
|
2005-04-17 02:20:36 +04:00
|
|
|
|
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 01:15:00 +04:00
|
|
|
ACPI_FUNCTION_TRACE(ns_externalize_name);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
if (!internal_name_length || !internal_name || !converted_name) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2009-03-06 05:05:18 +03:00
|
|
|
/* Check for a prefix (one '\' | one or more '^') */
|
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
switch (internal_name[0]) {
|
2012-12-31 04:05:17 +04:00
|
|
|
case AML_ROOT_PREFIX:
|
2013-06-08 04:58:14 +04:00
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
prefix_length = 1;
|
|
|
|
break;
|
|
|
|
|
2012-12-31 04:05:17 +04:00
|
|
|
case AML_PARENT_PREFIX:
|
2013-06-08 04:58:14 +04:00
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
for (i = 0; i < internal_name_length; i++) {
|
2012-12-31 04:05:17 +04:00
|
|
|
if (ACPI_IS_PARENT_PREFIX(internal_name[i])) {
|
2005-04-17 02:20:36 +04:00
|
|
|
prefix_length = i + 1;
|
2005-08-05 08:44:28 +04:00
|
|
|
} else {
|
2005-04-17 02:20:36 +04:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i == internal_name_length) {
|
|
|
|
prefix_length = i;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2013-06-08 04:58:14 +04:00
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2009-03-06 05:05:18 +03:00
|
|
|
* Check for object names. Note that there could be 0-255 of these
|
2005-04-17 02:20:36 +04:00
|
|
|
* 4-byte elements.
|
|
|
|
*/
|
|
|
|
if (prefix_length < internal_name_length) {
|
|
|
|
switch (internal_name[prefix_length]) {
|
2017-04-26 11:18:40 +03:00
|
|
|
case AML_MULTI_NAME_PREFIX:
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
/* <count> 4-byte names */
|
|
|
|
|
|
|
|
names_index = prefix_length + 2;
|
2008-06-10 09:42:13 +04:00
|
|
|
num_segments = (u8)
|
2016-05-05 07:57:53 +03:00
|
|
|
internal_name[(acpi_size)prefix_length + 1];
|
2005-04-17 02:20:36 +04:00
|
|
|
break;
|
|
|
|
|
|
|
|
case AML_DUAL_NAME_PREFIX:
|
|
|
|
|
|
|
|
/* Two 4-byte names */
|
|
|
|
|
|
|
|
names_index = prefix_length + 1;
|
|
|
|
num_segments = 2;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 0:
|
|
|
|
|
|
|
|
/* null_name */
|
|
|
|
|
|
|
|
names_index = 0;
|
|
|
|
num_segments = 0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
|
|
|
/* one 4-byte name */
|
|
|
|
|
|
|
|
names_index = prefix_length;
|
|
|
|
num_segments = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Calculate the length of converted_name, which equals the length
|
|
|
|
* of the prefix, length of all object names, length of any required
|
|
|
|
* punctuation ('.') between object names, plus the NULL terminator.
|
|
|
|
*/
|
|
|
|
required_length = prefix_length + (4 * num_segments) +
|
2005-08-05 08:44:28 +04:00
|
|
|
((num_segments > 0) ? (num_segments - 1) : 0) + 1;
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
/*
|
2012-10-31 06:26:55 +04:00
|
|
|
* Check to see if we're still in bounds. If not, there's a problem
|
2005-04-17 02:20:36 +04:00
|
|
|
* with internal_name (invalid format).
|
|
|
|
*/
|
|
|
|
if (required_length > internal_name_length) {
|
2006-01-28 00:43:00 +03:00
|
|
|
ACPI_ERROR((AE_INFO, "Invalid internal name"));
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(AE_BAD_PATHNAME);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2009-03-06 05:05:18 +03:00
|
|
|
/* Build the converted_name */
|
|
|
|
|
2006-10-03 08:00:00 +04:00
|
|
|
*converted_name = ACPI_ALLOCATE_ZEROED(required_length);
|
2005-04-17 02:20:36 +04:00
|
|
|
if (!(*converted_name)) {
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
j = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < prefix_length; i++) {
|
|
|
|
(*converted_name)[j++] = internal_name[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
if (num_segments > 0) {
|
|
|
|
for (i = 0; i < num_segments; i++) {
|
|
|
|
if (i > 0) {
|
|
|
|
(*converted_name)[j++] = '.';
|
|
|
|
}
|
|
|
|
|
2012-10-31 06:28:19 +04:00
|
|
|
/* Copy and validate the 4-char name segment */
|
|
|
|
|
|
|
|
ACPI_MOVE_NAME(&(*converted_name)[j],
|
|
|
|
&internal_name[names_index]);
|
|
|
|
acpi_ut_repair_name(&(*converted_name)[j]);
|
2012-10-31 06:27:48 +04:00
|
|
|
|
|
|
|
j += ACPI_NAME_SIZE;
|
|
|
|
names_index += ACPI_NAME_SIZE;
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (converted_name_length) {
|
|
|
|
*converted_name_length = (u32) required_length;
|
|
|
|
}
|
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(AE_OK);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2009-12-11 09:57:00 +03:00
|
|
|
* FUNCTION: acpi_ns_validate_handle
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
2012-07-12 05:40:10 +04:00
|
|
|
* PARAMETERS: handle - Handle to be validated and typecast to a
|
2009-12-11 09:57:00 +03:00
|
|
|
* namespace node.
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
2009-12-11 09:57:00 +03:00
|
|
|
* RETURN: A pointer to a namespace node
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
2009-12-11 09:57:00 +03:00
|
|
|
* DESCRIPTION: Convert a namespace handle to a namespace node. Handles special
|
|
|
|
* cases for the root node.
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
2009-12-11 09:57:00 +03:00
|
|
|
* NOTE: Real integer handles would allow for more verification
|
2005-04-19 06:49:35 +04:00
|
|
|
* and keep all pointers within this subsystem - however this introduces
|
2009-12-11 09:57:00 +03:00
|
|
|
* more overhead and has not been necessary to this point. Drivers
|
|
|
|
* holding handles are typically notified before a node becomes invalid
|
|
|
|
* due to a table unload.
|
2009-03-06 05:05:18 +03:00
|
|
|
*
|
2005-04-17 02:20:36 +04:00
|
|
|
******************************************************************************/
|
|
|
|
|
2009-12-11 09:57:00 +03:00
|
|
|
struct acpi_namespace_node *acpi_ns_validate_handle(acpi_handle handle)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
ACPI_FUNCTION_ENTRY();
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2009-03-06 05:05:18 +03:00
|
|
|
/* Parameter validation */
|
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
if ((!handle) || (handle == ACPI_ROOT_OBJECT)) {
|
2005-04-17 02:20:36 +04:00
|
|
|
return (acpi_gbl_root_node);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We can at least attempt to verify the handle */
|
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
if (ACPI_GET_DESCRIPTOR_TYPE(handle) != ACPI_DESC_TYPE_NAMED) {
|
2005-04-17 02:20:36 +04:00
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
return (ACPI_CAST_PTR(struct acpi_namespace_node, handle));
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ns_terminate
|
|
|
|
*
|
|
|
|
* PARAMETERS: none
|
|
|
|
*
|
|
|
|
* RETURN: none
|
|
|
|
*
|
2005-04-19 06:49:35 +04:00
|
|
|
* DESCRIPTION: free memory allocated for namespace and ACPI table storage.
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
void acpi_ns_terminate(void)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2013-11-21 08:20:06 +04:00
|
|
|
acpi_status status;
|
2017-04-26 11:18:08 +03:00
|
|
|
union acpi_operand_object *prev;
|
|
|
|
union acpi_operand_object *next;
|
2005-04-17 02:20:36 +04:00
|
|
|
|
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 01:15:00 +04:00
|
|
|
ACPI_FUNCTION_TRACE(ns_terminate);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2017-04-26 11:18:08 +03:00
|
|
|
/* Delete any module-level code blocks */
|
2015-08-25 05:29:45 +03:00
|
|
|
|
2017-04-26 11:18:08 +03:00
|
|
|
next = acpi_gbl_module_code_list;
|
|
|
|
while (next) {
|
|
|
|
prev = next;
|
|
|
|
next = next->method.mutex;
|
|
|
|
prev->method.mutex = NULL; /* Clear the Mutex (cheated) field */
|
|
|
|
acpi_ut_remove_reference(prev);
|
2015-08-25 05:29:45 +03:00
|
|
|
}
|
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
/*
|
2013-11-21 08:20:06 +04:00
|
|
|
* Free the entire namespace -- all nodes and all objects
|
|
|
|
* attached to the nodes
|
2005-04-17 02:20:36 +04:00
|
|
|
*/
|
2005-08-05 08:44:28 +04:00
|
|
|
acpi_ns_delete_namespace_subtree(acpi_gbl_root_node);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2013-11-21 08:20:06 +04:00
|
|
|
/* Delete any objects attached to the root node */
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2013-11-21 08:20:06 +04:00
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_VOID;
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2013-11-21 08:20:06 +04:00
|
|
|
acpi_ns_delete_node(acpi_gbl_root_node);
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace freed\n"));
|
2005-04-17 02:20:36 +04:00
|
|
|
return_VOID;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ns_opens_scope
|
|
|
|
*
|
2012-07-12 05:40:10 +04:00
|
|
|
* PARAMETERS: type - A valid namespace type
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
|
|
|
* RETURN: NEWSCOPE if the passed type "opens a name scope" according
|
|
|
|
* to the ACPI specification, else 0
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
2005-08-05 08:44:28 +04:00
|
|
|
u32 acpi_ns_opens_scope(acpi_object_type type)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2012-12-19 09:37:59 +04:00
|
|
|
ACPI_FUNCTION_ENTRY();
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2012-12-19 09:37:59 +04:00
|
|
|
if (type > ACPI_TYPE_LOCAL_MAX) {
|
2006-10-02 08:00:00 +04:00
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
/* type code out of range */
|
|
|
|
|
2010-03-05 12:56:40 +03:00
|
|
|
ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type));
|
2012-12-19 09:37:59 +04:00
|
|
|
return (ACPI_NS_NORMAL);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2012-12-19 09:37:59 +04:00
|
|
|
return (((u32)acpi_gbl_ns_properties[type]) & ACPI_NS_NEWSCOPE);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2016-09-07 09:07:02 +03:00
|
|
|
* FUNCTION: acpi_ns_get_node_unlocked
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
2012-07-12 05:40:10 +04:00
|
|
|
* PARAMETERS: *pathname - Name to be found, in external (ASL) format. The
|
2005-04-17 02:20:36 +04:00
|
|
|
* \ (backslash) and ^ (carat) prefixes, and the
|
|
|
|
* . (period) to separate segments are supported.
|
2006-05-27 00:36:00 +04:00
|
|
|
* prefix_node - Root of subtree to be searched, or NS_ALL for the
|
2012-10-31 06:26:55 +04:00
|
|
|
* root of the name space. If Name is fully
|
2005-04-17 02:20:36 +04:00
|
|
|
* qualified (first s8 is '\'), the passed value
|
|
|
|
* of Scope will not be accessed.
|
2012-07-12 05:40:10 +04:00
|
|
|
* flags - Used to indicate whether to perform upsearch or
|
2005-04-17 02:20:36 +04:00
|
|
|
* not.
|
|
|
|
* return_node - Where the Node is returned
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Look up a name relative to a given scope and return the
|
2012-10-31 06:26:55 +04:00
|
|
|
* corresponding Node. NOTE: Scope can be null.
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
2016-09-07 09:07:02 +03:00
|
|
|
* MUTEX: Doesn't locks namespace
|
2005-04-17 02:20:36 +04:00
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status
|
2016-09-07 09:07:02 +03:00
|
|
|
acpi_ns_get_node_unlocked(struct acpi_namespace_node *prefix_node,
|
|
|
|
const char *pathname,
|
|
|
|
u32 flags, struct acpi_namespace_node **return_node)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2005-08-05 08:44:28 +04:00
|
|
|
union acpi_generic_state scope_info;
|
|
|
|
acpi_status status;
|
2006-05-27 00:36:00 +04:00
|
|
|
char *internal_path;
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2016-09-07 09:07:02 +03:00
|
|
|
ACPI_FUNCTION_TRACE_PTR(ns_get_node_unlocked,
|
|
|
|
ACPI_CAST_PTR(char, pathname));
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2012-12-31 04:05:33 +04:00
|
|
|
/* Simplest case is a null pathname */
|
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
if (!pathname) {
|
|
|
|
*return_node = prefix_node;
|
|
|
|
if (!prefix_node) {
|
|
|
|
*return_node = acpi_gbl_root_node;
|
|
|
|
}
|
2015-12-29 08:54:36 +03:00
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
}
|
2006-10-02 08:00:00 +04:00
|
|
|
|
2012-12-31 04:05:33 +04:00
|
|
|
/* Quick check for a reference to the root */
|
|
|
|
|
|
|
|
if (ACPI_IS_ROOT_PREFIX(pathname[0]) && (!pathname[1])) {
|
|
|
|
*return_node = acpi_gbl_root_node;
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
|
|
}
|
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
/* Convert path to internal representation */
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
status = acpi_ns_internalize_name(pathname, &internal_path);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Setup lookup scope (search starting point) */
|
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
scope_info.scope.node = prefix_node;
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
/* Lookup the name in the namespace */
|
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
status = acpi_ns_lookup(&scope_info, internal_path, ACPI_TYPE_ANY,
|
|
|
|
ACPI_IMODE_EXECUTE,
|
|
|
|
(flags | ACPI_NS_DONT_OPEN_SCOPE), NULL,
|
|
|
|
return_node);
|
2005-08-05 08:44:28 +04:00
|
|
|
if (ACPI_FAILURE(status)) {
|
2009-02-18 09:58:08 +03:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s, %s\n",
|
2006-05-27 00:36:00 +04:00
|
|
|
pathname, acpi_format_exception(status)));
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2006-05-27 00:36:00 +04:00
|
|
|
ACPI_FREE(internal_path);
|
2005-08-05 08:44:28 +04:00
|
|
|
return_ACPI_STATUS(status);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
2016-09-07 09:07:02 +03:00
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_ns_get_node
|
|
|
|
*
|
|
|
|
* PARAMETERS: *pathname - Name to be found, in external (ASL) format. The
|
|
|
|
* \ (backslash) and ^ (carat) prefixes, and the
|
|
|
|
* . (period) to separate segments are supported.
|
|
|
|
* prefix_node - Root of subtree to be searched, or NS_ALL for the
|
|
|
|
* root of the name space. If Name is fully
|
|
|
|
* qualified (first s8 is '\'), the passed value
|
|
|
|
* of Scope will not be accessed.
|
|
|
|
* flags - Used to indicate whether to perform upsearch or
|
|
|
|
* not.
|
|
|
|
* return_node - Where the Node is returned
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Look up a name relative to a given scope and return the
|
|
|
|
* corresponding Node. NOTE: Scope can be null.
|
|
|
|
*
|
|
|
|
* MUTEX: Locks namespace
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
acpi_status
|
|
|
|
acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
|
|
|
|
const char *pathname,
|
|
|
|
u32 flags, struct acpi_namespace_node **return_node)
|
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ns_get_node, ACPI_CAST_PTR(char, pathname));
|
|
|
|
|
|
|
|
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
status = acpi_ns_get_node_unlocked(prefix_node, pathname,
|
|
|
|
flags, return_node);
|
|
|
|
|
|
|
|
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|