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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
/******************************************************************************
*
* Module Name: nsinit - namespace initialization
* $Revision: 9 $
*
*****************************************************************************/
/*
* Copyright (C) 2000 R. Byron Moore
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "acpi.h"
#include "acnamesp.h"
#include "acdispat.h"
#define _COMPONENT NAMESPACE
MODULE_NAME ("nsinit")
/*******************************************************************************
*
* FUNCTION: Acpi_ns_initialize_objects
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Walk the entire namespace and perform any necessary
* initialization on the objects found therein
*
******************************************************************************/
ACPI_STATUS
acpi_ns_initialize_objects (
void)
{
ACPI_STATUS status;
ACPI_INIT_WALK_INFO info;
info.field_count = 0;
info.field_init = 0;
info.op_region_count = 0;
info.op_region_init = 0;
info.object_count = 0;
/* Walk entire namespace from the supplied root */
status = acpi_walk_namespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_ns_init_one_object,
&info, NULL);
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: Acpi_ns_initialize_devices
*
* PARAMETERS: None
*
* RETURN: ACPI_STATUS
*
* DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
* This means running _INI on all present devices.
*
* Also: Install PCI config space handler for all PCI root bridges.
* A PCI root bridge is found by searching for devices containing
* a HID with the value EISAID("PNP0A03")
*
*****************************************************************************/
ACPI_STATUS
acpi_ns_initialize_devices (
u32 flags)
{
ACPI_STATUS status;
ACPI_DEVICE_WALK_INFO info;
info.flags = flags;
info.device_count = 0;
info.num_STA = 0;
info.num_INI = 0;
status = acpi_ns_walk_namespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
FALSE, acpi_ns_init_one_device, &info, NULL);
return (status);
}
/*******************************************************************************
*
* FUNCTION: Acpi_ns_init_one_object
*
* PARAMETERS: Obj_handle - Node
* 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) Op Regions
*
******************************************************************************/
ACPI_STATUS
acpi_ns_init_one_object (
ACPI_HANDLE obj_handle,
u32 level,
void *context,
void **return_value)
{
OBJECT_TYPE_INTERNAL type;
ACPI_STATUS status;
ACPI_INIT_WALK_INFO *info = (ACPI_INIT_WALK_INFO *) context;
ACPI_NAMESPACE_NODE *node = (ACPI_NAMESPACE_NODE *) obj_handle;
ACPI_OPERAND_OBJECT *obj_desc;
info->object_count++;
/* And even then, we are only interested in a few object types */
type = acpi_ns_get_type (obj_handle);
obj_desc = node->object;
if (!obj_desc) {
return (AE_OK);
}
switch (type)
{
case ACPI_TYPE_REGION:
info->op_region_count++;
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
break;
}
info->op_region_init++;
status = acpi_ds_get_region_arguments (obj_desc);
break;
case ACPI_TYPE_FIELD_UNIT:
info->field_count++;
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
break;
}
info->field_init++;
status = acpi_ds_get_field_unit_arguments (obj_desc);
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_ns_init_one_device
*
* PARAMETERS: The usual "I'm a namespace callback" stuff
*
* RETURN: ACPI_STATUS
*
* DESCRIPTION: This is called once per device soon after ACPI is enabled
* to initialize each device. It determines if the device is
* present, and if so, calls _INI.
*
*****************************************************************************/
ACPI_STATUS
acpi_ns_init_one_device (
ACPI_HANDLE obj_handle,
u32 nesting_level,
void *context,
void **return_value)
{
ACPI_STATUS status;
ACPI_NAMESPACE_NODE *node;
u32 flags;
ACPI_DEVICE_WALK_INFO *info = (ACPI_DEVICE_WALK_INFO *) context;
info->device_count++;
acpi_cm_acquire_mutex (ACPI_MTX_NAMESPACE);
node = acpi_ns_convert_handle_to_entry (obj_handle);
if (!node) {
acpi_cm_release_mutex (ACPI_MTX_NAMESPACE);
return (AE_BAD_PARAMETER);
}
acpi_cm_release_mutex (ACPI_MTX_NAMESPACE);
/*
* Run _STA to determine if we can run _INI on the device.
*/
status = acpi_cm_execute_STA (node, &flags);
if (ACPI_FAILURE (status)) {
return (status);
}
info->num_STA++;
if (!(flags & 0x01)) {
/* don't look at children of a not present device */
return(AE_CTRL_DEPTH);
}
/*
* The device is present. Run _INI.
*/
status = acpi_ns_evaluate_relative (obj_handle, "_INI", NULL, NULL);
if (AE_NOT_FOUND == status) {
/* No _INI means device requires no initialization */
status = AE_OK;
}
else if (ACPI_FAILURE (status)) {
return (status);
}
else {
info->num_INI++;
}
return (status);
}
|
