![Bob Moore](/assets/img/avatar_default.png)
Implemented support in the Resource Manager to allow unresolved namestring references within resource package objects for the _PRT method. This support is in addition to the previously implemented unresolved reference support within the AML parser. If the interpreter slack mode is enabled (true on Linux unless acpi=strict), these unresolved references will be passed through to the caller as a NULL package entry. http://bugzilla.kernel.org/show_bug.cgi?id=5741 Implemented and deployed new macros and functions for error and warning messages across the subsystem. These macros are simpler and generate less code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. Implemented the acpi_cpu_flags type to simplify host OS integration of the Acquire/Release Lock OSL interfaces. Suggested by Steven Rostedt and Andrew Morton. Fixed a problem where Alias ASL operators are sometimes not correctly resolved. causing AE_AML_INTERNAL http://bugzilla.kernel.org/show_bug.cgi?id=5189 http://bugzilla.kernel.org/show_bug.cgi?id=5674 Fixed several problems with the implementation of the ConcatenateResTemplate ASL operator. As per the ACPI specification, zero length buffers are now treated as a single EndTag. One-length buffers always cause a fatal exception. Non-zero length buffers that do not end with a full 2-byte EndTag cause a fatal exception. Fixed a possible structure overwrite in the AcpiGetObjectInfo external interface. (With assistance from Thomas Renninger) Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
438 lines
12 KiB
C
438 lines
12 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: nsobject - Utilities for objects attached to namespace
|
|
* table entries
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2006, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/acnamesp.h>
|
|
|
|
#define _COMPONENT ACPI_NAMESPACE
|
|
ACPI_MODULE_NAME("nsobject")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_attach_object
|
|
*
|
|
* PARAMETERS: Node - Parent Node
|
|
* Object - Object to be attached
|
|
* Type - Type of object, or ACPI_TYPE_ANY if not
|
|
* known
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Record the given object as the value associated with the
|
|
* name whose acpi_handle is passed. If Object is NULL
|
|
* and Type is ACPI_TYPE_ANY, set the name as having no value.
|
|
* Note: Future may require that the Node->Flags field be passed
|
|
* as a parameter.
|
|
*
|
|
* MUTEX: Assumes namespace is locked
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_ns_attach_object(struct acpi_namespace_node *node,
|
|
union acpi_operand_object *object, acpi_object_type type)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
union acpi_operand_object *last_obj_desc;
|
|
acpi_object_type object_type = ACPI_TYPE_ANY;
|
|
|
|
ACPI_FUNCTION_TRACE("ns_attach_object");
|
|
|
|
/*
|
|
* Parameter validation
|
|
*/
|
|
if (!node) {
|
|
/* Invalid handle */
|
|
|
|
ACPI_ERROR((AE_INFO, "Null named_obj handle"));
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (!object && (ACPI_TYPE_ANY != type)) {
|
|
/* Null object */
|
|
|
|
ACPI_ERROR((AE_INFO,
|
|
"Null object, but type not ACPI_TYPE_ANY"));
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
|
|
/* Not a name handle */
|
|
|
|
ACPI_ERROR((AE_INFO, "Invalid handle %p [%s]",
|
|
node, acpi_ut_get_descriptor_name(node)));
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Check if this object is already attached */
|
|
|
|
if (node->object == object) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
|
"Obj %p already installed in name_obj %p\n",
|
|
object, node));
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* If null object, we will just install it */
|
|
|
|
if (!object) {
|
|
obj_desc = NULL;
|
|
object_type = ACPI_TYPE_ANY;
|
|
}
|
|
|
|
/*
|
|
* If the source object is a namespace Node with an attached object,
|
|
* we will use that (attached) object
|
|
*/
|
|
else if ((ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED) &&
|
|
((struct acpi_namespace_node *)object)->object) {
|
|
/*
|
|
* Value passed is a name handle and that name has a
|
|
* non-null value. Use that name's value and type.
|
|
*/
|
|
obj_desc = ((struct acpi_namespace_node *)object)->object;
|
|
object_type = ((struct acpi_namespace_node *)object)->type;
|
|
}
|
|
|
|
/*
|
|
* Otherwise, we will use the parameter object, but we must type
|
|
* it first
|
|
*/
|
|
else {
|
|
obj_desc = (union acpi_operand_object *)object;
|
|
|
|
/* Use the given type */
|
|
|
|
object_type = type;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Installing %p into Node %p [%4.4s]\n",
|
|
obj_desc, node, acpi_ut_get_node_name(node)));
|
|
|
|
/* Detach an existing attached object if present */
|
|
|
|
if (node->object) {
|
|
acpi_ns_detach_object(node);
|
|
}
|
|
|
|
if (obj_desc) {
|
|
/*
|
|
* Must increment the new value's reference count
|
|
* (if it is an internal object)
|
|
*/
|
|
acpi_ut_add_reference(obj_desc);
|
|
|
|
/*
|
|
* Handle objects with multiple descriptors - walk
|
|
* to the end of the descriptor list
|
|
*/
|
|
last_obj_desc = obj_desc;
|
|
while (last_obj_desc->common.next_object) {
|
|
last_obj_desc = last_obj_desc->common.next_object;
|
|
}
|
|
|
|
/* Install the object at the front of the object list */
|
|
|
|
last_obj_desc->common.next_object = node->object;
|
|
}
|
|
|
|
node->type = (u8) object_type;
|
|
node->object = obj_desc;
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_detach_object
|
|
*
|
|
* PARAMETERS: Node - A Namespace node whose object will be detached
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Detach/delete an object associated with a namespace node.
|
|
* if the object is an allocated object, it is freed.
|
|
* Otherwise, the field is simply cleared.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ns_detach_object(struct acpi_namespace_node *node)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
|
|
ACPI_FUNCTION_TRACE("ns_detach_object");
|
|
|
|
obj_desc = node->object;
|
|
|
|
if (!obj_desc ||
|
|
(ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_DATA)) {
|
|
return_VOID;
|
|
}
|
|
|
|
/* Clear the entry in all cases */
|
|
|
|
node->object = NULL;
|
|
if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) == ACPI_DESC_TYPE_OPERAND) {
|
|
node->object = obj_desc->common.next_object;
|
|
if (node->object &&
|
|
(ACPI_GET_OBJECT_TYPE(node->object) !=
|
|
ACPI_TYPE_LOCAL_DATA)) {
|
|
node->object = node->object->common.next_object;
|
|
}
|
|
}
|
|
|
|
/* Reset the node type to untyped */
|
|
|
|
node->type = ACPI_TYPE_ANY;
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Node %p [%4.4s] Object %p\n",
|
|
node, acpi_ut_get_node_name(node), obj_desc));
|
|
|
|
/* Remove one reference on the object (and all subobjects) */
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return_VOID;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_get_attached_object
|
|
*
|
|
* PARAMETERS: Node - Namespace node
|
|
*
|
|
* RETURN: Current value of the object field from the Node whose
|
|
* handle is passed
|
|
*
|
|
* DESCRIPTION: Obtain the object attached to a namespace node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
union acpi_operand_object *acpi_ns_get_attached_object(struct
|
|
acpi_namespace_node
|
|
*node)
|
|
{
|
|
ACPI_FUNCTION_TRACE_PTR("ns_get_attached_object", node);
|
|
|
|
if (!node) {
|
|
ACPI_WARNING((AE_INFO, "Null Node ptr"));
|
|
return_PTR(NULL);
|
|
}
|
|
|
|
if (!node->object ||
|
|
((ACPI_GET_DESCRIPTOR_TYPE(node->object) != ACPI_DESC_TYPE_OPERAND)
|
|
&& (ACPI_GET_DESCRIPTOR_TYPE(node->object) !=
|
|
ACPI_DESC_TYPE_NAMED))
|
|
|| (ACPI_GET_OBJECT_TYPE(node->object) == ACPI_TYPE_LOCAL_DATA)) {
|
|
return_PTR(NULL);
|
|
}
|
|
|
|
return_PTR(node->object);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_get_secondary_object
|
|
*
|
|
* PARAMETERS: Node - Namespace node
|
|
*
|
|
* RETURN: Current value of the object field from the Node whose
|
|
* handle is passed.
|
|
*
|
|
* DESCRIPTION: Obtain a secondary object associated with a namespace node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
union acpi_operand_object *acpi_ns_get_secondary_object(union
|
|
acpi_operand_object
|
|
*obj_desc)
|
|
{
|
|
ACPI_FUNCTION_TRACE_PTR("ns_get_secondary_object", obj_desc);
|
|
|
|
if ((!obj_desc) ||
|
|
(ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_DATA) ||
|
|
(!obj_desc->common.next_object) ||
|
|
(ACPI_GET_OBJECT_TYPE(obj_desc->common.next_object) ==
|
|
ACPI_TYPE_LOCAL_DATA)) {
|
|
return_PTR(NULL);
|
|
}
|
|
|
|
return_PTR(obj_desc->common.next_object);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_attach_data
|
|
*
|
|
* PARAMETERS: Node - Namespace node
|
|
* Handler - Handler to be associated with the data
|
|
* Data - Data to be attached
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Low-level attach data. Create and attach a Data object.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ns_attach_data(struct acpi_namespace_node *node,
|
|
acpi_object_handler handler, void *data)
|
|
{
|
|
union acpi_operand_object *prev_obj_desc;
|
|
union acpi_operand_object *obj_desc;
|
|
union acpi_operand_object *data_desc;
|
|
|
|
/* We only allow one attachment per handler */
|
|
|
|
prev_obj_desc = NULL;
|
|
obj_desc = node->object;
|
|
while (obj_desc) {
|
|
if ((ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_DATA) &&
|
|
(obj_desc->data.handler == handler)) {
|
|
return (AE_ALREADY_EXISTS);
|
|
}
|
|
|
|
prev_obj_desc = obj_desc;
|
|
obj_desc = obj_desc->common.next_object;
|
|
}
|
|
|
|
/* Create an internal object for the data */
|
|
|
|
data_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_DATA);
|
|
if (!data_desc) {
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
data_desc->data.handler = handler;
|
|
data_desc->data.pointer = data;
|
|
|
|
/* Install the data object */
|
|
|
|
if (prev_obj_desc) {
|
|
prev_obj_desc->common.next_object = data_desc;
|
|
} else {
|
|
node->object = data_desc;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_detach_data
|
|
*
|
|
* PARAMETERS: Node - Namespace node
|
|
* Handler - Handler associated with the data
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Low-level detach data. Delete the data node, but the caller
|
|
* is responsible for the actual data.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ns_detach_data(struct acpi_namespace_node * node,
|
|
acpi_object_handler handler)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
union acpi_operand_object *prev_obj_desc;
|
|
|
|
prev_obj_desc = NULL;
|
|
obj_desc = node->object;
|
|
while (obj_desc) {
|
|
if ((ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_DATA) &&
|
|
(obj_desc->data.handler == handler)) {
|
|
if (prev_obj_desc) {
|
|
prev_obj_desc->common.next_object =
|
|
obj_desc->common.next_object;
|
|
} else {
|
|
node->object = obj_desc->common.next_object;
|
|
}
|
|
|
|
acpi_ut_remove_reference(obj_desc);
|
|
return (AE_OK);
|
|
}
|
|
|
|
prev_obj_desc = obj_desc;
|
|
obj_desc = obj_desc->common.next_object;
|
|
}
|
|
|
|
return (AE_NOT_FOUND);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ns_get_attached_data
|
|
*
|
|
* PARAMETERS: Node - Namespace node
|
|
* Handler - Handler associated with the data
|
|
* Data - Where the data is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Low level interface to obtain data previously associated with
|
|
* a namespace node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ns_get_attached_data(struct acpi_namespace_node * node,
|
|
acpi_object_handler handler, void **data)
|
|
{
|
|
union acpi_operand_object *obj_desc;
|
|
|
|
obj_desc = node->object;
|
|
while (obj_desc) {
|
|
if ((ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_DATA) &&
|
|
(obj_desc->data.handler == handler)) {
|
|
*data = obj_desc->data.pointer;
|
|
return (AE_OK);
|
|
}
|
|
|
|
obj_desc = obj_desc->common.next_object;
|
|
}
|
|
|
|
return (AE_NOT_FOUND);
|
|
}
|