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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/namespace/nsinit.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/namespace/nsinit.c')
-rw-r--r--drivers/acpi/namespace/nsinit.c593
1 files changed, 0 insertions, 593 deletions
diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c
deleted file mode 100644
index fe470c4b38f7..000000000000
--- a/drivers/acpi/namespace/nsinit.c
+++ /dev/null
@@ -1,593 +0,0 @@
1/******************************************************************************
2 *
3 * Module Name: nsinit - namespace initialization
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/acnamesp.h>
47#include <acpi/acdispat.h>
48#include <acpi/acinterp.h>
49#include <linux/nmi.h>
50
51#define _COMPONENT ACPI_NAMESPACE
52ACPI_MODULE_NAME("nsinit")
53
54/* Local prototypes */
55static acpi_status
56acpi_ns_init_one_object(acpi_handle obj_handle,
57 u32 level, void *context, void **return_value);
58
59static acpi_status
60acpi_ns_init_one_device(acpi_handle obj_handle,
61 u32 nesting_level, void *context, void **return_value);
62
63static acpi_status
64acpi_ns_find_ini_methods(acpi_handle obj_handle,
65 u32 nesting_level, void *context, void **return_value);
66
67/*******************************************************************************
68 *
69 * FUNCTION: acpi_ns_initialize_objects
70 *
71 * PARAMETERS: None
72 *
73 * RETURN: Status
74 *
75 * DESCRIPTION: Walk the entire namespace and perform any necessary
76 * initialization on the objects found therein
77 *
78 ******************************************************************************/
79
80acpi_status acpi_ns_initialize_objects(void)
81{
82 acpi_status status;
83 struct acpi_init_walk_info info;
84
85 ACPI_FUNCTION_TRACE(ns_initialize_objects);
86
87 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
88 "**** Starting initialization of namespace objects ****\n"));
89 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
90 "Completing Region/Field/Buffer/Package initialization:"));
91
92 /* Set all init info to zero */
93
94 ACPI_MEMSET(&info, 0, sizeof(struct acpi_init_walk_info));
95
96 /* Walk entire namespace from the supplied root */
97
98 status = acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
99 ACPI_UINT32_MAX, acpi_ns_init_one_object,
100 &info, NULL);
101 if (ACPI_FAILURE(status)) {
102 ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
103 }
104
105 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
106 "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd Buffers %hd/%hd Packages (%hd nodes)\n",
107 info.op_region_init, info.op_region_count,
108 info.field_init, info.field_count,
109 info.buffer_init, info.buffer_count,
110 info.package_init, info.package_count,
111 info.object_count));
112
113 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
114 "%hd Control Methods found\n", info.method_count));
115 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
116 "%hd Op Regions found\n", info.op_region_count));
117
118 return_ACPI_STATUS(AE_OK);
119}
120
121/*******************************************************************************
122 *
123 * FUNCTION: acpi_ns_initialize_devices
124 *
125 * PARAMETERS: None
126 *
127 * RETURN: acpi_status
128 *
129 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
130 * This means running _INI on all present devices.
131 *
132 * Note: We install PCI config space handler on region access,
133 * not here.
134 *
135 ******************************************************************************/
136
137acpi_status acpi_ns_initialize_devices(void)
138{
139 acpi_status status;
140 struct acpi_device_walk_info info;
141
142 ACPI_FUNCTION_TRACE(ns_initialize_devices);
143
144 /* Init counters */
145
146 info.device_count = 0;
147 info.num_STA = 0;
148 info.num_INI = 0;
149
150 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
151 "Initializing Device/Processor/Thermal objects by executing _INI methods:"));
152
153 /* Tree analysis: find all subtrees that contain _INI methods */
154
155 status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
156 ACPI_UINT32_MAX, FALSE,
157 acpi_ns_find_ini_methods, &info, NULL);
158 if (ACPI_FAILURE(status)) {
159 goto error_exit;
160 }
161
162 /* Allocate the evaluation information block */
163
164 info.evaluate_info =
165 ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
166 if (!info.evaluate_info) {
167 status = AE_NO_MEMORY;
168 goto error_exit;
169 }
170
171 /* Walk namespace to execute all _INIs on present devices */
172
173 status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
174 ACPI_UINT32_MAX, FALSE,
175 acpi_ns_init_one_device, &info, NULL);
176
177 ACPI_FREE(info.evaluate_info);
178 if (ACPI_FAILURE(status)) {
179 goto error_exit;
180 }
181
182 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
183 "\nExecuted %hd _INI methods requiring %hd _STA executions (examined %hd objects)\n",
184 info.num_INI, info.num_STA, info.device_count));
185
186 return_ACPI_STATUS(status);
187
188 error_exit:
189 ACPI_EXCEPTION((AE_INFO, status, "During device initialization"));
190 return_ACPI_STATUS(status);
191}
192
193/*******************************************************************************
194 *
195 * FUNCTION: acpi_ns_init_one_object
196 *
197 * PARAMETERS: obj_handle - Node
198 * Level - Current nesting level
199 * Context - Points to a init info struct
200 * return_value - Not used
201 *
202 * RETURN: Status
203 *
204 * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
205 * within the namespace.
206 *
207 * Currently, the only objects that require initialization are:
208 * 1) Methods
209 * 2) Op Regions
210 *
211 ******************************************************************************/
212
213static acpi_status
214acpi_ns_init_one_object(acpi_handle obj_handle,
215 u32 level, void *context, void **return_value)
216{
217 acpi_object_type type;
218 acpi_status status = AE_OK;
219 struct acpi_init_walk_info *info =
220 (struct acpi_init_walk_info *)context;
221 struct acpi_namespace_node *node =
222 (struct acpi_namespace_node *)obj_handle;
223 union acpi_operand_object *obj_desc;
224
225 ACPI_FUNCTION_NAME(ns_init_one_object);
226
227 info->object_count++;
228
229 /* And even then, we are only interested in a few object types */
230
231 type = acpi_ns_get_type(obj_handle);
232 obj_desc = acpi_ns_get_attached_object(node);
233 if (!obj_desc) {
234 return (AE_OK);
235 }
236
237 /* Increment counters for object types we are looking for */
238
239 switch (type) {
240 case ACPI_TYPE_REGION:
241 info->op_region_count++;
242 break;
243
244 case ACPI_TYPE_BUFFER_FIELD:
245 info->field_count++;
246 break;
247
248 case ACPI_TYPE_LOCAL_BANK_FIELD:
249 info->field_count++;
250 break;
251
252 case ACPI_TYPE_BUFFER:
253 info->buffer_count++;
254 break;
255
256 case ACPI_TYPE_PACKAGE:
257 info->package_count++;
258 break;
259
260 default:
261
262 /* No init required, just exit now */
263 return (AE_OK);
264 }
265
266 /*
267 * If the object is already initialized, nothing else to do
268 */
269 if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
270 return (AE_OK);
271 }
272
273 /*
274 * Must lock the interpreter before executing AML code
275 */
276 acpi_ex_enter_interpreter();
277
278 /*
279 * Each of these types can contain executable AML code within the
280 * declaration.
281 */
282 switch (type) {
283 case ACPI_TYPE_REGION:
284
285 info->op_region_init++;
286 status = acpi_ds_get_region_arguments(obj_desc);
287 break;
288
289 case ACPI_TYPE_BUFFER_FIELD:
290
291 info->field_init++;
292 status = acpi_ds_get_buffer_field_arguments(obj_desc);
293 break;
294
295 case ACPI_TYPE_LOCAL_BANK_FIELD:
296
297 info->field_init++;
298 status = acpi_ds_get_bank_field_arguments(obj_desc);
299 break;
300
301 case ACPI_TYPE_BUFFER:
302
303 info->buffer_init++;
304 status = acpi_ds_get_buffer_arguments(obj_desc);
305 break;
306
307 case ACPI_TYPE_PACKAGE:
308
309 info->package_init++;
310 status = acpi_ds_get_package_arguments(obj_desc);
311 break;
312
313 default:
314 /* No other types can get here */
315 break;
316 }
317
318 if (ACPI_FAILURE(status)) {
319 ACPI_EXCEPTION((AE_INFO, status,
320 "Could not execute arguments for [%4.4s] (%s)",
321 acpi_ut_get_node_name(node),
322 acpi_ut_get_type_name(type)));
323 }
324
325 /*
326 * Print a dot for each object unless we are going to print the entire
327 * pathname
328 */
329 if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
330 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
331 }
332
333 /*
334 * We ignore errors from above, and always return OK, since we don't want
335 * to abort the walk on any single error.
336 */
337 acpi_ex_exit_interpreter();
338 return (AE_OK);
339}
340
341/*******************************************************************************
342 *
343 * FUNCTION: acpi_ns_find_ini_methods
344 *
345 * PARAMETERS: acpi_walk_callback
346 *
347 * RETURN: acpi_status
348 *
349 * DESCRIPTION: Called during namespace walk. Finds objects named _INI under
350 * device/processor/thermal objects, and marks the entire subtree
351 * with a SUBTREE_HAS_INI flag. This flag is used during the
352 * subsequent device initialization walk to avoid entire subtrees
353 * that do not contain an _INI.
354 *
355 ******************************************************************************/
356
357static acpi_status
358acpi_ns_find_ini_methods(acpi_handle obj_handle,
359 u32 nesting_level, void *context, void **return_value)
360{
361 struct acpi_device_walk_info *info =
362 ACPI_CAST_PTR(struct acpi_device_walk_info, context);
363 struct acpi_namespace_node *node;
364 struct acpi_namespace_node *parent_node;
365
366 /* Keep count of device/processor/thermal objects */
367
368 node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
369 if ((node->type == ACPI_TYPE_DEVICE) ||
370 (node->type == ACPI_TYPE_PROCESSOR) ||
371 (node->type == ACPI_TYPE_THERMAL)) {
372 info->device_count++;
373 return (AE_OK);
374 }
375
376 /* We are only looking for methods named _INI */
377
378 if (!ACPI_COMPARE_NAME(node->name.ascii, METHOD_NAME__INI)) {
379 return (AE_OK);
380 }
381
382 /*
383 * The only _INI methods that we care about are those that are
384 * present under Device, Processor, and Thermal objects.
385 */
386 parent_node = acpi_ns_get_parent_node(node);
387 switch (parent_node->type) {
388 case ACPI_TYPE_DEVICE:
389 case ACPI_TYPE_PROCESSOR:
390 case ACPI_TYPE_THERMAL:
391
392 /* Mark parent and bubble up the INI present flag to the root */
393
394 while (parent_node) {
395 parent_node->flags |= ANOBJ_SUBTREE_HAS_INI;
396 parent_node = acpi_ns_get_parent_node(parent_node);
397 }
398 break;
399
400 default:
401 break;
402 }
403
404 return (AE_OK);
405}
406
407/*******************************************************************************
408 *
409 * FUNCTION: acpi_ns_init_one_device
410 *
411 * PARAMETERS: acpi_walk_callback
412 *
413 * RETURN: acpi_status
414 *
415 * DESCRIPTION: This is called once per device soon after ACPI is enabled
416 * to initialize each device. It determines if the device is
417 * present, and if so, calls _INI.
418 *
419 ******************************************************************************/
420
421static acpi_status
422acpi_ns_init_one_device(acpi_handle obj_handle,
423 u32 nesting_level, void *context, void **return_value)
424{
425 struct acpi_device_walk_info *walk_info =
426 ACPI_CAST_PTR(struct acpi_device_walk_info, context);
427 struct acpi_evaluate_info *info = walk_info->evaluate_info;
428 u32 flags;
429 acpi_status status;
430 struct acpi_namespace_node *device_node;
431
432 ACPI_FUNCTION_TRACE(ns_init_one_device);
433
434 /* We are interested in Devices, Processors and thermal_zones only */
435
436 device_node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
437 if ((device_node->type != ACPI_TYPE_DEVICE) &&
438 (device_node->type != ACPI_TYPE_PROCESSOR) &&
439 (device_node->type != ACPI_TYPE_THERMAL)) {
440 return_ACPI_STATUS(AE_OK);
441 }
442
443 /*
444 * Because of an earlier namespace analysis, all subtrees that contain an
445 * _INI method are tagged.
446 *
447 * If this device subtree does not contain any _INI methods, we
448 * can exit now and stop traversing this entire subtree.
449 */
450 if (!(device_node->flags & ANOBJ_SUBTREE_HAS_INI)) {
451 return_ACPI_STATUS(AE_CTRL_DEPTH);
452 }
453
454 /*
455 * Run _STA to determine if this device is present and functioning. We
456 * must know this information for two important reasons (from ACPI spec):
457 *
458 * 1) We can only run _INI if the device is present.
459 * 2) We must abort the device tree walk on this subtree if the device is
460 * not present and is not functional (we will not examine the children)
461 *
462 * The _STA method is not required to be present under the device, we
463 * assume the device is present if _STA does not exist.
464 */
465 ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
466 (ACPI_TYPE_METHOD, device_node, METHOD_NAME__STA));
467
468 status = acpi_ut_execute_STA(device_node, &flags);
469 if (ACPI_FAILURE(status)) {
470
471 /* Ignore error and move on to next device */
472
473 return_ACPI_STATUS(AE_OK);
474 }
475
476 /*
477 * Flags == -1 means that _STA was not found. In this case, we assume that
478 * the device is both present and functional.
479 *
480 * From the ACPI spec, description of _STA:
481 *
482 * "If a device object (including the processor object) does not have an
483 * _STA object, then OSPM assumes that all of the above bits are set (in
484 * other words, the device is present, ..., and functioning)"
485 */
486 if (flags != ACPI_UINT32_MAX) {
487 walk_info->num_STA++;
488 }
489
490 /*
491 * Examine the PRESENT and FUNCTIONING status bits
492 *
493 * Note: ACPI spec does not seem to specify behavior for the present but
494 * not functioning case, so we assume functioning if present.
495 */
496 if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
497
498 /* Device is not present, we must examine the Functioning bit */
499
500 if (flags & ACPI_STA_DEVICE_FUNCTIONING) {
501 /*
502 * Device is not present but is "functioning". In this case,
503 * we will not run _INI, but we continue to examine the children
504 * of this device.
505 *
506 * From the ACPI spec, description of _STA: (Note - no mention
507 * of whether to run _INI or not on the device in question)
508 *
509 * "_STA may return bit 0 clear (not present) with bit 3 set
510 * (device is functional). This case is used to indicate a valid
511 * device for which no device driver should be loaded (for example,
512 * a bridge device.) Children of this device may be present and
513 * valid. OSPM should continue enumeration below a device whose
514 * _STA returns this bit combination"
515 */
516 return_ACPI_STATUS(AE_OK);
517 } else {
518 /*
519 * Device is not present and is not functioning. We must abort the
520 * walk of this subtree immediately -- don't look at the children
521 * of such a device.
522 *
523 * From the ACPI spec, description of _INI:
524 *
525 * "If the _STA method indicates that the device is not present,
526 * OSPM will not run the _INI and will not examine the children
527 * of the device for _INI methods"
528 */
529 return_ACPI_STATUS(AE_CTRL_DEPTH);
530 }
531 }
532
533 /*
534 * The device is present or is assumed present if no _STA exists.
535 * Run the _INI if it exists (not required to exist)
536 *
537 * Note: We know there is an _INI within this subtree, but it may not be
538 * under this particular device, it may be lower in the branch.
539 */
540 ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
541 (ACPI_TYPE_METHOD, device_node, METHOD_NAME__INI));
542
543 info->prefix_node = device_node;
544 info->pathname = METHOD_NAME__INI;
545 info->parameters = NULL;
546 info->flags = ACPI_IGNORE_RETURN_VALUE;
547
548 /*
549 * Some hardware relies on this being executed as atomically
550 * as possible (without an NMI being received in the middle of
551 * this) - so disable NMIs and initialize the device:
552 */
553 acpi_nmi_disable();
554 status = acpi_ns_evaluate(info);
555 acpi_nmi_enable();
556
557 if (ACPI_SUCCESS(status)) {
558 walk_info->num_INI++;
559
560 if ((acpi_dbg_level <= ACPI_LV_ALL_EXCEPTIONS) &&
561 (!(acpi_dbg_level & ACPI_LV_INFO))) {
562 ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
563 }
564 }
565#ifdef ACPI_DEBUG_OUTPUT
566 else if (status != AE_NOT_FOUND) {
567
568 /* Ignore error and move on to next device */
569
570 char *scope_name =
571 acpi_ns_get_external_pathname(info->resolved_node);
572
573 ACPI_EXCEPTION((AE_INFO, status, "during %s._INI execution",
574 scope_name));
575 ACPI_FREE(scope_name);
576 }
577#endif
578
579 /* Ignore errors from above */
580
581 status = AE_OK;
582
583 /*
584 * The _INI method has been run if present; call the Global Initialization
585 * Handler for this device.
586 */
587 if (acpi_gbl_init_handler) {
588 status =
589 acpi_gbl_init_handler(device_node, ACPI_INIT_DEVICE_INI);
590 }
591
592 return_ACPI_STATUS(status);
593}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 12:02:06 -0500