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
|
/******************************************************************************
*
* Module Name: psxface - Parser external interfaces
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2005, 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/acparser.h>
#include <acpi/acdispat.h>
#include <acpi/acinterp.h>
#include <acpi/acnamesp.h>
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME ("psxface")
/*******************************************************************************
*
* FUNCTION: acpi_psx_execute
*
* PARAMETERS: Info->Node - A method object containing both the AML
* address and length.
* **Params - List of parameters to pass to method,
* terminated by NULL. Params itself may be
* NULL if no parameters are being passed.
* **return_obj_desc - Return object from execution of the
* method.
*
* RETURN: Status
*
* DESCRIPTION: Execute a control method
*
******************************************************************************/
acpi_status
acpi_psx_execute (
struct acpi_parameter_info *info)
{
acpi_status status;
union acpi_operand_object *obj_desc;
u32 i;
union acpi_parse_object *op;
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE ("psx_execute");
/* Validate the Node and get the attached object */
if (!info || !info->node) {
return_ACPI_STATUS (AE_NULL_ENTRY);
}
obj_desc = acpi_ns_get_attached_object (info->node);
if (!obj_desc) {
return_ACPI_STATUS (AE_NULL_OBJECT);
}
/* Init for new method, wait on concurrency semaphore */
status = acpi_ds_begin_method_execution (info->node, obj_desc, NULL);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
if ((info->parameter_type == ACPI_PARAM_ARGS) &&
(info->parameters)) {
/*
* The caller "owns" the parameters, so give each one an extra
* reference
*/
for (i = 0; info->parameters[i]; i++) {
acpi_ut_add_reference (info->parameters[i]);
}
}
/*
* 1) Perform the first pass parse of the method to enter any
* named objects that it creates into the namespace
*/
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
"**** Begin Method Parse **** Entry=%p obj=%p\n",
info->node, obj_desc));
/* Create and init a Root Node */
op = acpi_ps_create_scope_op ();
if (!op) {
status = AE_NO_MEMORY;
goto cleanup1;
}
/*
* Get a new owner_id for objects created by this method. Namespace
* objects (such as Operation Regions) can be created during the
* first pass parse.
*/
obj_desc->method.owning_id = acpi_ut_allocate_owner_id (ACPI_OWNER_TYPE_METHOD);
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id,
NULL, NULL, NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup2;
}
status = acpi_ds_init_aml_walk (walk_state, op, info->node,
obj_desc->method.aml_start,
obj_desc->method.aml_length, NULL, 1);
if (ACPI_FAILURE (status)) {
goto cleanup3;
}
/* Parse the AML */
status = acpi_ps_parse_aml (walk_state);
acpi_ps_delete_parse_tree (op);
if (ACPI_FAILURE (status)) {
goto cleanup1; /* Walk state is already deleted */
}
/*
* 2) Execute the method. Performs second pass parse simultaneously
*/
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
"**** Begin Method Execution **** Entry=%p obj=%p\n",
info->node, obj_desc));
/* Create and init a Root Node */
op = acpi_ps_create_scope_op ();
if (!op) {
status = AE_NO_MEMORY;
goto cleanup1;
}
/* Init new op with the method name and pointer back to the NS node */
acpi_ps_set_name (op, info->node->name.integer);
op->common.node = info->node;
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state (0, NULL, NULL, NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup2;
}
status = acpi_ds_init_aml_walk (walk_state, op, info->node,
obj_desc->method.aml_start,
obj_desc->method.aml_length, info, 3);
if (ACPI_FAILURE (status)) {
goto cleanup3;
}
/*
* The walk of the parse tree is where we actually execute the method
*/
status = acpi_ps_parse_aml (walk_state);
goto cleanup2; /* Walk state already deleted */
cleanup3:
acpi_ds_delete_walk_state (walk_state);
cleanup2:
acpi_ps_delete_parse_tree (op);
cleanup1:
if ((info->parameter_type == ACPI_PARAM_ARGS) &&
(info->parameters)) {
/* Take away the extra reference that we gave the parameters above */
for (i = 0; info->parameters[i]; i++) {
/* Ignore errors, just do them all */
(void) acpi_ut_update_object_reference (info->parameters[i], REF_DECREMENT);
}
}
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
/*
* If the method has returned an object, signal this to the caller with
* a control exception code
*/
if (info->return_object) {
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned obj_desc=%p\n",
info->return_object));
ACPI_DUMP_STACK_ENTRY (info->return_object);
status = AE_CTRL_RETURN_VALUE;
}
return_ACPI_STATUS (status);
}
|
