aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/acpi/acpica/psxface.c
diff options
context:
space:
mode:
authorLen Brown <len.brown@intel.com>2009-01-09 00:13:17 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:30:47 -0500
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/acpica/psxface.c
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/psxface.c')
-rw-r--r--drivers/acpi/acpica/psxface.c385
1 files changed, 385 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c
new file mode 100644
index 000000000000..98c31a893706
--- /dev/null
+++ b/drivers/acpi/acpica/psxface.c
@@ -0,0 +1,385 @@
1/******************************************************************************
2 *
3 * Module Name: psxface - Parser external interfaces
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2008, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include <acpi/acpi.h>
45#include <acpi/accommon.h>
46#include <acpi/acparser.h>
47#include <acpi/acdispat.h>
48#include <acpi/acinterp.h>
49#include <acpi/amlcode.h>
50
51#define _COMPONENT ACPI_PARSER
52ACPI_MODULE_NAME("psxface")
53
54/* Local Prototypes */
55static void acpi_ps_start_trace(struct acpi_evaluate_info *info);
56
57static void acpi_ps_stop_trace(struct acpi_evaluate_info *info);
58
59static void
60acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);
61
62/*******************************************************************************
63 *
64 * FUNCTION: acpi_debug_trace
65 *
66 * PARAMETERS: method_name - Valid ACPI name string
67 * debug_level - Optional level mask. 0 to use default
68 * debug_layer - Optional layer mask. 0 to use default
69 * Flags - bit 1: one shot(1) or persistent(0)
70 *
71 * RETURN: Status
72 *
73 * DESCRIPTION: External interface to enable debug tracing during control
74 * method execution
75 *
76 ******************************************************************************/
77
78acpi_status
79acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags)
80{
81 acpi_status status;
82
83 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
84 if (ACPI_FAILURE(status)) {
85 return (status);
86 }
87
88 /* TBDs: Validate name, allow full path or just nameseg */
89
90 acpi_gbl_trace_method_name = *ACPI_CAST_PTR(u32, name);
91 acpi_gbl_trace_flags = flags;
92
93 if (debug_level) {
94 acpi_gbl_trace_dbg_level = debug_level;
95 }
96 if (debug_layer) {
97 acpi_gbl_trace_dbg_layer = debug_layer;
98 }
99
100 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
101 return (AE_OK);
102}
103
104/*******************************************************************************
105 *
106 * FUNCTION: acpi_ps_start_trace
107 *
108 * PARAMETERS: Info - Method info struct
109 *
110 * RETURN: None
111 *
112 * DESCRIPTION: Start control method execution trace
113 *
114 ******************************************************************************/
115
116static void acpi_ps_start_trace(struct acpi_evaluate_info *info)
117{
118 acpi_status status;
119
120 ACPI_FUNCTION_ENTRY();
121
122 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
123 if (ACPI_FAILURE(status)) {
124 return;
125 }
126
127 if ((!acpi_gbl_trace_method_name) ||
128 (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
129 goto exit;
130 }
131
132 acpi_gbl_original_dbg_level = acpi_dbg_level;
133 acpi_gbl_original_dbg_layer = acpi_dbg_layer;
134
135 acpi_dbg_level = 0x00FFFFFF;
136 acpi_dbg_layer = ACPI_UINT32_MAX;
137
138 if (acpi_gbl_trace_dbg_level) {
139 acpi_dbg_level = acpi_gbl_trace_dbg_level;
140 }
141 if (acpi_gbl_trace_dbg_layer) {
142 acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
143 }
144
145 exit:
146 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
147}
148
149/*******************************************************************************
150 *
151 * FUNCTION: acpi_ps_stop_trace
152 *
153 * PARAMETERS: Info - Method info struct
154 *
155 * RETURN: None
156 *
157 * DESCRIPTION: Stop control method execution trace
158 *
159 ******************************************************************************/
160
161static void acpi_ps_stop_trace(struct acpi_evaluate_info *info)
162{
163 acpi_status status;
164
165 ACPI_FUNCTION_ENTRY();
166
167 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
168 if (ACPI_FAILURE(status)) {
169 return;
170 }
171
172 if ((!acpi_gbl_trace_method_name) ||
173 (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
174 goto exit;
175 }
176
177 /* Disable further tracing if type is one-shot */
178
179 if (acpi_gbl_trace_flags & 1) {
180 acpi_gbl_trace_method_name = 0;
181 acpi_gbl_trace_dbg_level = 0;
182 acpi_gbl_trace_dbg_layer = 0;
183 }
184
185 acpi_dbg_level = acpi_gbl_original_dbg_level;
186 acpi_dbg_layer = acpi_gbl_original_dbg_layer;
187
188 exit:
189 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
190}
191
192/*******************************************************************************
193 *
194 * FUNCTION: acpi_ps_execute_method
195 *
196 * PARAMETERS: Info - Method info block, contains:
197 * Node - Method Node to execute
198 * obj_desc - Method object
199 * Parameters - List of parameters to pass to the method,
200 * terminated by NULL. Params itself may be
201 * NULL if no parameters are being passed.
202 * return_object - Where to put method's return value (if
203 * any). If NULL, no value is returned.
204 * parameter_type - Type of Parameter list
205 * return_object - Where to put method's return value (if
206 * any). If NULL, no value is returned.
207 * pass_number - Parse or execute pass
208 *
209 * RETURN: Status
210 *
211 * DESCRIPTION: Execute a control method
212 *
213 ******************************************************************************/
214
215acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
216{
217 acpi_status status;
218 union acpi_parse_object *op;
219 struct acpi_walk_state *walk_state;
220
221 ACPI_FUNCTION_TRACE(ps_execute_method);
222
223 /* Validate the Info and method Node */
224
225 if (!info || !info->resolved_node) {
226 return_ACPI_STATUS(AE_NULL_ENTRY);
227 }
228
229 /* Init for new method, wait on concurrency semaphore */
230
231 status =
232 acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
233 NULL);
234 if (ACPI_FAILURE(status)) {
235 return_ACPI_STATUS(status);
236 }
237
238 /*
239 * The caller "owns" the parameters, so give each one an extra reference
240 */
241 acpi_ps_update_parameter_list(info, REF_INCREMENT);
242
243 /* Begin tracing if requested */
244
245 acpi_ps_start_trace(info);
246
247 /*
248 * Execute the method. Performs parse simultaneously
249 */
250 ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
251 "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
252 info->resolved_node->name.ascii, info->resolved_node,
253 info->obj_desc));
254
255 /* Create and init a Root Node */
256
257 op = acpi_ps_create_scope_op();
258 if (!op) {
259 status = AE_NO_MEMORY;
260 goto cleanup;
261 }
262
263 /* Create and initialize a new walk state */
264
265 info->pass_number = ACPI_IMODE_EXECUTE;
266 walk_state =
267 acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL,
268 NULL, NULL);
269 if (!walk_state) {
270 status = AE_NO_MEMORY;
271 goto cleanup;
272 }
273
274 status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
275 info->obj_desc->method.aml_start,
276 info->obj_desc->method.aml_length, info,
277 info->pass_number);
278 if (ACPI_FAILURE(status)) {
279 acpi_ds_delete_walk_state(walk_state);
280 goto cleanup;
281 }
282
283 /* Invoke an internal method if necessary */
284
285 if (info->obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
286 status = info->obj_desc->method.implementation(walk_state);
287 info->return_object = walk_state->return_desc;
288
289 /* Cleanup states */
290
291 acpi_ds_scope_stack_clear(walk_state);
292 acpi_ps_cleanup_scope(&walk_state->parser_state);
293 acpi_ds_terminate_control_method(walk_state->method_desc,
294 walk_state);
295 acpi_ds_delete_walk_state(walk_state);
296 goto cleanup;
297 }
298
299 /*
300 * Start method evaluation with an implicit return of zero.
301 * This is done for Windows compatibility.
302 */
303 if (acpi_gbl_enable_interpreter_slack) {
304 walk_state->implicit_return_obj =
305 acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
306 if (!walk_state->implicit_return_obj) {
307 status = AE_NO_MEMORY;
308 acpi_ds_delete_walk_state(walk_state);
309 goto cleanup;
310 }
311
312 walk_state->implicit_return_obj->integer.value = 0;
313 }
314
315 /* Parse the AML */
316
317 status = acpi_ps_parse_aml(walk_state);
318
319 /* walk_state was deleted by parse_aml */
320
321 cleanup:
322 acpi_ps_delete_parse_tree(op);
323
324 /* End optional tracing */
325
326 acpi_ps_stop_trace(info);
327
328 /* Take away the extra reference that we gave the parameters above */
329
330 acpi_ps_update_parameter_list(info, REF_DECREMENT);
331
332 /* Exit now if error above */
333
334 if (ACPI_FAILURE(status)) {
335 return_ACPI_STATUS(status);
336 }
337
338 /*
339 * If the method has returned an object, signal this to the caller with
340 * a control exception code
341 */
342 if (info->return_object) {
343 ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
344 info->return_object));
345 ACPI_DUMP_STACK_ENTRY(info->return_object);
346
347 status = AE_CTRL_RETURN_VALUE;
348 }
349
350 return_ACPI_STATUS(status);
351}
352
353/*******************************************************************************
354 *
355 * FUNCTION: acpi_ps_update_parameter_list
356 *
357 * PARAMETERS: Info - See struct acpi_evaluate_info
358 * (Used: parameter_type and Parameters)
359 * Action - Add or Remove reference
360 *
361 * RETURN: Status
362 *
363 * DESCRIPTION: Update reference count on all method parameter objects
364 *
365 ******************************************************************************/
366
367static void
368acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action)
369{
370 u32 i;
371
372 if (info->parameters) {
373
374 /* Update reference count for each parameter */
375
376 for (i = 0; info->parameters[i]; i++) {
377
378 /* Ignore errors, just do them all */
379
380 (void)acpi_ut_update_object_reference(info->
381 parameters[i],
382 action);
383 }
384 }
385}