1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dsinit - Object initialization namespace walk
*
* Copyright (C) 2000 - 2020, Intel Corp.
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "actables.h"
#include "acinterp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsinit")
/* Local prototypes */
static acpi_status
acpi_ds_init_one_object(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
/*******************************************************************************
*
* FUNCTION: acpi_ds_init_one_object
*
* PARAMETERS: obj_handle - Node for the object
* level - Current nesting level
* context - Points to a init info struct
* return_value - Not used
*
* RETURN: Status
*
* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
* within the namespace.
*
* Currently, the only objects that require initialization are:
* 1) Methods
* 2) Operation Regions
*
******************************************************************************/
static acpi_status
acpi_ds_init_one_object(acpi_handle obj_handle,
u32 level, void *context, void **return_value)
{
struct acpi_init_walk_info *info =
(struct acpi_init_walk_info *)context;
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
acpi_status status;
union acpi_operand_object *obj_desc;
ACPI_FUNCTION_ENTRY();
/*
* We are only interested in NS nodes owned by the table that
* was just loaded
*/
if (node->owner_id != info->owner_id) {
return (AE_OK);
}
info->object_count++;
/* And even then, we are only interested in a few object types */
switch (acpi_ns_get_type(obj_handle)) {
case ACPI_TYPE_REGION:
status = acpi_ds_initialize_region(obj_handle);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"During Region initialization %p [%4.4s]",
obj_handle,
acpi_ut_get_node_name(obj_handle)));
}
info->op_region_count++;
break;
case ACPI_TYPE_METHOD:
/*
* Auto-serialization support. We will examine each method that is
* not_serialized to determine if it creates any Named objects. If
* it does, it will be marked serialized to prevent problems if
* the method is entered by two or more threads and an attempt is
* made to create the same named object twice -- which results in
* an AE_ALREADY_EXISTS exception and method abort.
*/
info->method_count++;
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
break;
}
/* Ignore if already serialized */
if (obj_desc->method.info_flags & ACPI_METHOD_SERIALIZED) {
info->serial_method_count++;
break;
}
if (acpi_gbl_auto_serialize_methods) {
/* Parse/scan method and serialize it if necessary */
acpi_ds_auto_serialize_method(node, obj_desc);
if (obj_desc->method.
info_flags & ACPI_METHOD_SERIALIZED) {
/* Method was just converted to Serialized */
info->serial_method_count++;
info->serialized_method_count++;
break;
}
}
info->non_serial_method_count++;
break;
case ACPI_TYPE_DEVICE:
info->device_count++;
break;
default:
break;
}
/*
* We ignore errors from above, and always return OK, since
* we don't want to abort the walk on a single error.
*/
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_initialize_objects
*
* PARAMETERS: table_desc - Descriptor for parent ACPI table
* start_node - Root of subtree to be initialized.
*
* RETURN: Status
*
* DESCRIPTION: Walk the namespace starting at "StartNode" and perform any
* necessary initialization on the objects found therein
*
******************************************************************************/
acpi_status
acpi_ds_initialize_objects(u32 table_index,
struct acpi_namespace_node *start_node)
{
acpi_status status;
struct acpi_init_walk_info info;
struct acpi_table_header *table;
acpi_owner_id owner_id;
ACPI_FUNCTION_TRACE(ds_initialize_objects);
status = acpi_tb_get_owner_id(table_index, &owner_id);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"**** Starting initialization of namespace objects ****\n"));
/* Set all init info to zero */
memset(&info, 0, sizeof(struct acpi_init_walk_info));
info.owner_id = owner_id;
info.table_index = table_index;
/* Walk entire namespace from the supplied root */
/*
* We don't use acpi_walk_namespace since we do not want to acquire
* the namespace reader lock.
*/
status =
acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
ACPI_NS_WALK_NO_UNLOCK,
acpi_ds_init_one_object, NULL, &info, NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
}
status = acpi_get_table_by_index(table_index, &table);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* DSDT is always the first AML table */
if (ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_DSDT)) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"\nACPI table initialization:\n"));
}
/* Summary of objects initialized */
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
"Table [%4.4s: %-8.8s] (id %.2X) - %4u Objects with %3u Devices, "
"%3u Regions, %4u Methods (%u/%u/%u Serial/Non/Cvt)\n",
table->signature, table->oem_table_id, owner_id,
info.object_count, info.device_count,
info.op_region_count, info.method_count,
info.serial_method_count,
info.non_serial_method_count,
info.serialized_method_count));
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "%u Methods, %u Regions\n",
info.method_count, info.op_region_count));
return_ACPI_STATUS(AE_OK);
}
|
