2018-03-14 23:13:07 +00:00
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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2005-04-16 22:20:36 +00:00
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/******************************************************************************
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*
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* Module Name: dsinit - Object initialization namespace walk
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*
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2018-01-04 18:06:38 +00:00
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* Copyright (C) 2000 - 2018, Intel Corp.
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2005-04-16 22:20:36 +00:00
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*
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2018-03-14 23:13:07 +00:00
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*****************************************************************************/
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2005-04-16 22:20:36 +00:00
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#include <acpi/acpi.h>
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2009-01-09 05:30:03 +00:00
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#include "accommon.h"
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#include "acdispat.h"
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#include "acnamesp.h"
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#include "actables.h"
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2016-10-26 07:42:01 +00:00
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#include "acinterp.h"
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2005-04-16 22:20:36 +00:00
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#define _COMPONENT ACPI_DISPATCHER
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2005-08-05 04:44:28 +00:00
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ACPI_MODULE_NAME("dsinit")
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2005-04-16 22:20:36 +00:00
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2005-04-19 02:49:35 +00:00
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/* Local prototypes */
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static acpi_status
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2005-08-05 04:44:28 +00:00
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acpi_ds_init_one_object(acpi_handle obj_handle,
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u32 level, void *context, void **return_value);
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2005-04-16 22:20:36 +00:00
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_init_one_object
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*
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2005-04-19 02:49:35 +00:00
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* PARAMETERS: obj_handle - Node for the object
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2012-07-12 01:40:10 +00:00
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* level - Current nesting level
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* context - Points to a init info struct
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2005-04-16 22:20:36 +00:00
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* return_value - Not used
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*
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* RETURN: Status
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*
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* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
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* within the namespace.
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*
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* Currently, the only objects that require initialization are:
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* 1) Methods
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* 2) Operation Regions
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*
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******************************************************************************/
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2005-04-19 02:49:35 +00:00
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static acpi_status
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2005-08-05 04:44:28 +00:00
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acpi_ds_init_one_object(acpi_handle obj_handle,
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u32 level, void *context, void **return_value)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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struct acpi_init_walk_info *info =
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(struct acpi_init_walk_info *)context;
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struct acpi_namespace_node *node =
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(struct acpi_namespace_node *)obj_handle;
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acpi_status status;
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2014-03-24 06:49:00 +00:00
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union acpi_operand_object *obj_desc;
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2005-04-16 22:20:36 +00:00
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2006-01-13 21:22:00 +00:00
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ACPI_FUNCTION_ENTRY();
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2005-04-16 22:20:36 +00:00
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/*
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2005-07-29 22:15:00 +00:00
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* We are only interested in NS nodes owned by the table that
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2005-04-16 22:20:36 +00:00
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* was just loaded
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*/
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2007-02-02 16:48:18 +00:00
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if (node->owner_id != info->owner_id) {
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2005-04-16 22:20:36 +00:00
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return (AE_OK);
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}
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info->object_count++;
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/* And even then, we are only interested in a few object types */
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2014-03-24 06:49:00 +00:00
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switch (acpi_ns_get_type(obj_handle)) {
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2005-04-16 22:20:36 +00:00
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case ACPI_TYPE_REGION:
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2005-08-05 04:44:28 +00:00
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status = acpi_ds_initialize_region(obj_handle);
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if (ACPI_FAILURE(status)) {
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2006-01-27 21:43:00 +00:00
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ACPI_EXCEPTION((AE_INFO, status,
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"During Region initialization %p [%4.4s]",
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obj_handle,
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acpi_ut_get_node_name(obj_handle)));
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2005-04-16 22:20:36 +00:00
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}
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info->op_region_count++;
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break;
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case ACPI_TYPE_METHOD:
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2014-03-24 06:49:00 +00:00
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/*
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* Auto-serialization support. We will examine each method that is
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* not_serialized to determine if it creates any Named objects. If
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* it does, it will be marked serialized to prevent problems if
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* the method is entered by two or more threads and an attempt is
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* made to create the same named object twice -- which results in
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* an AE_ALREADY_EXISTS exception and method abort.
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*/
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2005-07-29 22:15:00 +00:00
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info->method_count++;
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2014-03-24 06:49:00 +00:00
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obj_desc = acpi_ns_get_attached_object(node);
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if (!obj_desc) {
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break;
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}
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/* Ignore if already serialized */
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if (obj_desc->method.info_flags & ACPI_METHOD_SERIALIZED) {
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info->serial_method_count++;
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break;
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}
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if (acpi_gbl_auto_serialize_methods) {
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/* Parse/scan method and serialize it if necessary */
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acpi_ds_auto_serialize_method(node, obj_desc);
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if (obj_desc->method.
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info_flags & ACPI_METHOD_SERIALIZED) {
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/* Method was just converted to Serialized */
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info->serial_method_count++;
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info->serialized_method_count++;
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break;
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}
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}
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info->non_serial_method_count++;
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2005-04-16 22:20:36 +00:00
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break;
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case ACPI_TYPE_DEVICE:
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info->device_count++;
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break;
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default:
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2013-06-08 00:58:14 +00:00
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2005-04-16 22:20:36 +00:00
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break;
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}
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/*
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* We ignore errors from above, and always return OK, since
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* we don't want to abort the walk on a single error.
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*/
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_initialize_objects
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*
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* PARAMETERS: table_desc - Descriptor for parent ACPI table
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* start_node - Root of subtree to be initialized.
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*
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* RETURN: Status
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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>
2006-04-21 21:15:00 +00:00
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* DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
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2005-04-16 22:20:36 +00:00
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* necessary initialization on the objects found therein
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*
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******************************************************************************/
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acpi_status
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2008-06-10 05:42:13 +00:00
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acpi_ds_initialize_objects(u32 table_index,
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2016-05-05 04:57:53 +00:00
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struct acpi_namespace_node *start_node)
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2005-04-16 22:20:36 +00:00
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{
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2005-08-05 04:44:28 +00:00
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acpi_status status;
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struct acpi_init_walk_info info;
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2007-02-02 16:48:18 +00:00
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struct acpi_table_header *table;
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acpi_owner_id owner_id;
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2005-04-16 22:20:36 +00:00
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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>
2006-04-21 21:15:00 +00:00
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ACPI_FUNCTION_TRACE(ds_initialize_objects);
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2005-04-16 22:20:36 +00:00
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2007-02-02 16:48:18 +00:00
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status = acpi_tb_get_owner_id(table_index, &owner_id);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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2005-08-05 04:44:28 +00:00
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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"**** Starting initialization of namespace objects ****\n"));
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2005-04-16 22:20:36 +00:00
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2010-05-26 03:20:47 +00:00
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/* Set all init info to zero */
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2015-07-01 06:45:11 +00:00
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memset(&info, 0, sizeof(struct acpi_init_walk_info));
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2010-05-26 03:20:47 +00:00
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2007-02-02 16:48:18 +00:00
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info.owner_id = owner_id;
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2010-05-26 03:20:47 +00:00
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info.table_index = table_index;
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2005-04-16 22:20:36 +00:00
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/* Walk entire namespace from the supplied root */
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2009-03-09 08:31:04 +00:00
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/*
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* We don't use acpi_walk_namespace since we do not want to acquire
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* the namespace reader lock.
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*/
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status =
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acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
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2016-11-30 07:20:59 +00:00
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ACPI_NS_WALK_NO_UNLOCK,
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acpi_ds_init_one_object, NULL, &info, NULL);
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2005-08-05 04:44:28 +00:00
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if (ACPI_FAILURE(status)) {
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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>
2006-04-21 21:15:00 +00:00
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ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
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2005-04-16 22:20:36 +00:00
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}
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2007-02-02 16:48:18 +00:00
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status = acpi_get_table_by_index(table_index, &table);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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2015-08-25 02:28:54 +00:00
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/* DSDT is always the first AML table */
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if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT)) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
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"\nInitializing Namespace objects:\n"));
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}
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/* Summary of objects initialized */
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2005-08-05 04:44:28 +00:00
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
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2015-12-29 05:54:36 +00:00
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"Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
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2015-08-25 02:29:39 +00:00
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"%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
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table->signature, table->oem_table_id, owner_id,
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info.object_count, info.device_count,
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info.op_region_count, info.method_count,
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info.serial_method_count,
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2014-03-24 06:49:00 +00:00
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info.non_serial_method_count,
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info.serialized_method_count));
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2005-04-16 22:20:36 +00:00
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2014-03-24 06:49:00 +00:00
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ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
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info.method_count, info.op_region_count));
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2005-04-16 22:20:36 +00:00
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2005-08-05 04:44:28 +00:00
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return_ACPI_STATUS(AE_OK);
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2005-04-16 22:20:36 +00:00
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}
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