Merge branch 'async-battery' into release
[linux-2.6] / drivers / acpi / acpica / dsobject.c
1 /******************************************************************************
2  *
3  * Module Name: dsobject - Dispatcher object management routines
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 "accommon.h"
46 #include "acparser.h"
47 #include "amlcode.h"
48 #include "acdispat.h"
49 #include "acnamesp.h"
50 #include "acinterp.h"
51
52 #define _COMPONENT          ACPI_DISPATCHER
53 ACPI_MODULE_NAME("dsobject")
54
55 /* Local prototypes */
56 static acpi_status
57 acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
58                               union acpi_parse_object *op,
59                               union acpi_operand_object **obj_desc_ptr);
60
61 #ifndef ACPI_NO_METHOD_EXECUTION
62 /*******************************************************************************
63  *
64  * FUNCTION:    acpi_ds_build_internal_object
65  *
66  * PARAMETERS:  walk_state      - Current walk state
67  *              Op              - Parser object to be translated
68  *              obj_desc_ptr    - Where the ACPI internal object is returned
69  *
70  * RETURN:      Status
71  *
72  * DESCRIPTION: Translate a parser Op object to the equivalent namespace object
73  *              Simple objects are any objects other than a package object!
74  *
75  ******************************************************************************/
76
77 static acpi_status
78 acpi_ds_build_internal_object(struct acpi_walk_state *walk_state,
79                               union acpi_parse_object *op,
80                               union acpi_operand_object **obj_desc_ptr)
81 {
82         union acpi_operand_object *obj_desc;
83         acpi_status status;
84
85         ACPI_FUNCTION_TRACE(ds_build_internal_object);
86
87         *obj_desc_ptr = NULL;
88         if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
89                 /*
90                  * This is a named object reference. If this name was
91                  * previously looked up in the namespace, it was stored in this op.
92                  * Otherwise, go ahead and look it up now
93                  */
94                 if (!op->common.node) {
95                         status = acpi_ns_lookup(walk_state->scope_info,
96                                                 op->common.value.string,
97                                                 ACPI_TYPE_ANY,
98                                                 ACPI_IMODE_EXECUTE,
99                                                 ACPI_NS_SEARCH_PARENT |
100                                                 ACPI_NS_DONT_OPEN_SCOPE, NULL,
101                                                 ACPI_CAST_INDIRECT_PTR(struct
102                                                                        acpi_namespace_node,
103                                                                        &(op->
104                                                                          common.
105                                                                          node)));
106                         if (ACPI_FAILURE(status)) {
107
108                                 /* Check if we are resolving a named reference within a package */
109
110                                 if ((status == AE_NOT_FOUND)
111                                     && (acpi_gbl_enable_interpreter_slack)
112                                     &&
113                                     ((op->common.parent->common.aml_opcode ==
114                                       AML_PACKAGE_OP)
115                                      || (op->common.parent->common.aml_opcode ==
116                                          AML_VAR_PACKAGE_OP))) {
117                                         /*
118                                          * We didn't find the target and we are populating elements
119                                          * of a package - ignore if slack enabled. Some ASL code
120                                          * contains dangling invalid references in packages and
121                                          * expects that no exception will be issued. Leave the
122                                          * element as a null element. It cannot be used, but it
123                                          * can be overwritten by subsequent ASL code - this is
124                                          * typically the case.
125                                          */
126                                         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
127                                                           "Ignoring unresolved reference in package [%4.4s]\n",
128                                                           walk_state->
129                                                           scope_info->scope.
130                                                           node->name.ascii));
131
132                                         return_ACPI_STATUS(AE_OK);
133                                 } else {
134                                         ACPI_ERROR_NAMESPACE(op->common.value.
135                                                              string, status);
136                                 }
137
138                                 return_ACPI_STATUS(status);
139                         }
140                 }
141
142                 /* Special object resolution for elements of a package */
143
144                 if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
145                     (op->common.parent->common.aml_opcode ==
146                      AML_VAR_PACKAGE_OP)) {
147                         /*
148                          * Attempt to resolve the node to a value before we insert it into
149                          * the package. If this is a reference to a common data type,
150                          * resolve it immediately. According to the ACPI spec, package
151                          * elements can only be "data objects" or method references.
152                          * Attempt to resolve to an Integer, Buffer, String or Package.
153                          * If cannot, return the named reference (for things like Devices,
154                          * Methods, etc.) Buffer Fields and Fields will resolve to simple
155                          * objects (int/buf/str/pkg).
156                          *
157                          * NOTE: References to things like Devices, Methods, Mutexes, etc.
158                          * will remain as named references. This behavior is not described
159                          * in the ACPI spec, but it appears to be an oversight.
160                          */
161                         obj_desc =
162                             ACPI_CAST_PTR(union acpi_operand_object,
163                                           op->common.node);
164
165                         status =
166                             acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
167                                                           (struct
168                                                            acpi_namespace_node,
169                                                            &obj_desc),
170                                                           walk_state);
171                         if (ACPI_FAILURE(status)) {
172                                 return_ACPI_STATUS(status);
173                         }
174
175                         switch (op->common.node->type) {
176                                 /*
177                                  * For these types, we need the actual node, not the subobject.
178                                  * However, the subobject did not get an extra reference count above.
179                                  *
180                                  * TBD: should ex_resolve_node_to_value be changed to fix this?
181                                  */
182                         case ACPI_TYPE_DEVICE:
183                         case ACPI_TYPE_THERMAL:
184
185                                 acpi_ut_add_reference(op->common.node->object);
186
187                                 /*lint -fallthrough */
188                                 /*
189                                  * For these types, we need the actual node, not the subobject.
190                                  * The subobject got an extra reference count in ex_resolve_node_to_value.
191                                  */
192                         case ACPI_TYPE_MUTEX:
193                         case ACPI_TYPE_METHOD:
194                         case ACPI_TYPE_POWER:
195                         case ACPI_TYPE_PROCESSOR:
196                         case ACPI_TYPE_EVENT:
197                         case ACPI_TYPE_REGION:
198
199                                 /* We will create a reference object for these types below */
200                                 break;
201
202                         default:
203                                 /*
204                                  * All other types - the node was resolved to an actual
205                                  * object, we are done.
206                                  */
207                                 goto exit;
208                         }
209                 }
210         }
211
212         /* Create and init a new internal ACPI object */
213
214         obj_desc = acpi_ut_create_internal_object((acpi_ps_get_opcode_info
215                                                    (op->common.aml_opcode))->
216                                                   object_type);
217         if (!obj_desc) {
218                 return_ACPI_STATUS(AE_NO_MEMORY);
219         }
220
221         status =
222             acpi_ds_init_object_from_op(walk_state, op, op->common.aml_opcode,
223                                         &obj_desc);
224         if (ACPI_FAILURE(status)) {
225                 acpi_ut_remove_reference(obj_desc);
226                 return_ACPI_STATUS(status);
227         }
228
229       exit:
230         *obj_desc_ptr = obj_desc;
231         return_ACPI_STATUS(status);
232 }
233
234 /*******************************************************************************
235  *
236  * FUNCTION:    acpi_ds_build_internal_buffer_obj
237  *
238  * PARAMETERS:  walk_state      - Current walk state
239  *              Op              - Parser object to be translated
240  *              buffer_length   - Length of the buffer
241  *              obj_desc_ptr    - Where the ACPI internal object is returned
242  *
243  * RETURN:      Status
244  *
245  * DESCRIPTION: Translate a parser Op package object to the equivalent
246  *              namespace object
247  *
248  ******************************************************************************/
249
250 acpi_status
251 acpi_ds_build_internal_buffer_obj(struct acpi_walk_state *walk_state,
252                                   union acpi_parse_object *op,
253                                   u32 buffer_length,
254                                   union acpi_operand_object **obj_desc_ptr)
255 {
256         union acpi_parse_object *arg;
257         union acpi_operand_object *obj_desc;
258         union acpi_parse_object *byte_list;
259         u32 byte_list_length = 0;
260
261         ACPI_FUNCTION_TRACE(ds_build_internal_buffer_obj);
262
263         /*
264          * If we are evaluating a Named buffer object "Name (xxxx, Buffer)".
265          * The buffer object already exists (from the NS node), otherwise it must
266          * be created.
267          */
268         obj_desc = *obj_desc_ptr;
269         if (!obj_desc) {
270
271                 /* Create a new buffer object */
272
273                 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER);
274                 *obj_desc_ptr = obj_desc;
275                 if (!obj_desc) {
276                         return_ACPI_STATUS(AE_NO_MEMORY);
277                 }
278         }
279
280         /*
281          * Second arg is the buffer data (optional) byte_list can be either
282          * individual bytes or a string initializer.  In either case, a
283          * byte_list appears in the AML.
284          */
285         arg = op->common.value.arg;     /* skip first arg */
286
287         byte_list = arg->named.next;
288         if (byte_list) {
289                 if (byte_list->common.aml_opcode != AML_INT_BYTELIST_OP) {
290                         ACPI_ERROR((AE_INFO,
291                                     "Expecting bytelist, got AML opcode %X in op %p",
292                                     byte_list->common.aml_opcode, byte_list));
293
294                         acpi_ut_remove_reference(obj_desc);
295                         return (AE_TYPE);
296                 }
297
298                 byte_list_length = (u32) byte_list->common.value.integer;
299         }
300
301         /*
302          * The buffer length (number of bytes) will be the larger of:
303          * 1) The specified buffer length and
304          * 2) The length of the initializer byte list
305          */
306         obj_desc->buffer.length = buffer_length;
307         if (byte_list_length > buffer_length) {
308                 obj_desc->buffer.length = byte_list_length;
309         }
310
311         /* Allocate the buffer */
312
313         if (obj_desc->buffer.length == 0) {
314                 obj_desc->buffer.pointer = NULL;
315                 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
316                                   "Buffer defined with zero length in AML, creating\n"));
317         } else {
318                 obj_desc->buffer.pointer =
319                     ACPI_ALLOCATE_ZEROED(obj_desc->buffer.length);
320                 if (!obj_desc->buffer.pointer) {
321                         acpi_ut_delete_object_desc(obj_desc);
322                         return_ACPI_STATUS(AE_NO_MEMORY);
323                 }
324
325                 /* Initialize buffer from the byte_list (if present) */
326
327                 if (byte_list) {
328                         ACPI_MEMCPY(obj_desc->buffer.pointer,
329                                     byte_list->named.data, byte_list_length);
330                 }
331         }
332
333         obj_desc->buffer.flags |= AOPOBJ_DATA_VALID;
334         op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
335         return_ACPI_STATUS(AE_OK);
336 }
337
338 /*******************************************************************************
339  *
340  * FUNCTION:    acpi_ds_build_internal_package_obj
341  *
342  * PARAMETERS:  walk_state      - Current walk state
343  *              Op              - Parser object to be translated
344  *              element_count   - Number of elements in the package - this is
345  *                                the num_elements argument to Package()
346  *              obj_desc_ptr    - Where the ACPI internal object is returned
347  *
348  * RETURN:      Status
349  *
350  * DESCRIPTION: Translate a parser Op package object to the equivalent
351  *              namespace object
352  *
353  * NOTE: The number of elements in the package will be always be the num_elements
354  * count, regardless of the number of elements in the package list. If
355  * num_elements is smaller, only that many package list elements are used.
356  * if num_elements is larger, the Package object is padded out with
357  * objects of type Uninitialized (as per ACPI spec.)
358  *
359  * Even though the ASL compilers do not allow num_elements to be smaller
360  * than the Package list length (for the fixed length package opcode), some
361  * BIOS code modifies the AML on the fly to adjust the num_elements, and
362  * this code compensates for that. This also provides compatibility with
363  * other AML interpreters.
364  *
365  ******************************************************************************/
366
367 acpi_status
368 acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state,
369                                    union acpi_parse_object *op,
370                                    u32 element_count,
371                                    union acpi_operand_object **obj_desc_ptr)
372 {
373         union acpi_parse_object *arg;
374         union acpi_parse_object *parent;
375         union acpi_operand_object *obj_desc = NULL;
376         acpi_status status = AE_OK;
377         unsigned i;
378         u16 index;
379         u16 reference_count;
380
381         ACPI_FUNCTION_TRACE(ds_build_internal_package_obj);
382
383         /* Find the parent of a possibly nested package */
384
385         parent = op->common.parent;
386         while ((parent->common.aml_opcode == AML_PACKAGE_OP) ||
387                (parent->common.aml_opcode == AML_VAR_PACKAGE_OP)) {
388                 parent = parent->common.parent;
389         }
390
391         /*
392          * If we are evaluating a Named package object "Name (xxxx, Package)",
393          * the package object already exists, otherwise it must be created.
394          */
395         obj_desc = *obj_desc_ptr;
396         if (!obj_desc) {
397                 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
398                 *obj_desc_ptr = obj_desc;
399                 if (!obj_desc) {
400                         return_ACPI_STATUS(AE_NO_MEMORY);
401                 }
402
403                 obj_desc->package.node = parent->common.node;
404         }
405
406         /*
407          * Allocate the element array (array of pointers to the individual
408          * objects) based on the num_elements parameter. Add an extra pointer slot
409          * so that the list is always null terminated.
410          */
411         obj_desc->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size)
412                                                            element_count +
413                                                            1) * sizeof(void *));
414
415         if (!obj_desc->package.elements) {
416                 acpi_ut_delete_object_desc(obj_desc);
417                 return_ACPI_STATUS(AE_NO_MEMORY);
418         }
419
420         obj_desc->package.count = element_count;
421
422         /*
423          * Initialize the elements of the package, up to the num_elements count.
424          * Package is automatically padded with uninitialized (NULL) elements
425          * if num_elements is greater than the package list length. Likewise,
426          * Package is truncated if num_elements is less than the list length.
427          */
428         arg = op->common.value.arg;
429         arg = arg->common.next;
430         for (i = 0; arg && (i < element_count); i++) {
431                 if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
432                         if (arg->common.node->type == ACPI_TYPE_METHOD) {
433                                 /*
434                                  * A method reference "looks" to the parser to be a method
435                                  * invocation, so we special case it here
436                                  */
437                                 arg->common.aml_opcode = AML_INT_NAMEPATH_OP;
438                                 status =
439                                     acpi_ds_build_internal_object(walk_state,
440                                                                   arg,
441                                                                   &obj_desc->
442                                                                   package.
443                                                                   elements[i]);
444                         } else {
445                                 /* This package element is already built, just get it */
446
447                                 obj_desc->package.elements[i] =
448                                     ACPI_CAST_PTR(union acpi_operand_object,
449                                                   arg->common.node);
450                         }
451                 } else {
452                         status = acpi_ds_build_internal_object(walk_state, arg,
453                                                                &obj_desc->
454                                                                package.
455                                                                elements[i]);
456                 }
457
458                 if (*obj_desc_ptr) {
459
460                         /* Existing package, get existing reference count */
461
462                         reference_count =
463                             (*obj_desc_ptr)->common.reference_count;
464                         if (reference_count > 1) {
465
466                                 /* Make new element ref count match original ref count */
467
468                                 for (index = 0; index < (reference_count - 1);
469                                      index++) {
470                                         acpi_ut_add_reference((obj_desc->
471                                                                package.
472                                                                elements[i]));
473                                 }
474                         }
475                 }
476
477                 arg = arg->common.next;
478         }
479
480         /* Check for match between num_elements and actual length of package_list */
481
482         if (arg) {
483                 /*
484                  * num_elements was exhausted, but there are remaining elements in the
485                  * package_list.
486                  *
487                  * Note: technically, this is an error, from ACPI spec: "It is an error
488                  * for NumElements to be less than the number of elements in the
489                  * PackageList". However, for now, we just print an error message and
490                  * no exception is returned.
491                  */
492                 while (arg) {
493
494                         /* Find out how many elements there really are */
495
496                         i++;
497                         arg = arg->common.next;
498                 }
499
500                 ACPI_WARNING((AE_INFO,
501                             "Package List length (%X) larger than NumElements count (%X), truncated\n",
502                             i, element_count));
503         } else if (i < element_count) {
504                 /*
505                  * Arg list (elements) was exhausted, but we did not reach num_elements count.
506                  * Note: this is not an error, the package is padded out with NULLs.
507                  */
508                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
509                                   "Package List length (%X) smaller than NumElements count (%X), padded with null elements\n",
510                                   i, element_count));
511         }
512
513         obj_desc->package.flags |= AOPOBJ_DATA_VALID;
514         op->common.node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_desc);
515         return_ACPI_STATUS(status);
516 }
517
518 /*******************************************************************************
519  *
520  * FUNCTION:    acpi_ds_create_node
521  *
522  * PARAMETERS:  walk_state      - Current walk state
523  *              Node            - NS Node to be initialized
524  *              Op              - Parser object to be translated
525  *
526  * RETURN:      Status
527  *
528  * DESCRIPTION: Create the object to be associated with a namespace node
529  *
530  ******************************************************************************/
531
532 acpi_status
533 acpi_ds_create_node(struct acpi_walk_state *walk_state,
534                     struct acpi_namespace_node *node,
535                     union acpi_parse_object *op)
536 {
537         acpi_status status;
538         union acpi_operand_object *obj_desc;
539
540         ACPI_FUNCTION_TRACE_PTR(ds_create_node, op);
541
542         /*
543          * Because of the execution pass through the non-control-method
544          * parts of the table, we can arrive here twice.  Only init
545          * the named object node the first time through
546          */
547         if (acpi_ns_get_attached_object(node)) {
548                 return_ACPI_STATUS(AE_OK);
549         }
550
551         if (!op->common.value.arg) {
552
553                 /* No arguments, there is nothing to do */
554
555                 return_ACPI_STATUS(AE_OK);
556         }
557
558         /* Build an internal object for the argument(s) */
559
560         status = acpi_ds_build_internal_object(walk_state, op->common.value.arg,
561                                                &obj_desc);
562         if (ACPI_FAILURE(status)) {
563                 return_ACPI_STATUS(status);
564         }
565
566         /* Re-type the object according to its argument */
567
568         node->type = obj_desc->common.type;
569
570         /* Attach obj to node */
571
572         status = acpi_ns_attach_object(node, obj_desc, node->type);
573
574         /* Remove local reference to the object */
575
576         acpi_ut_remove_reference(obj_desc);
577         return_ACPI_STATUS(status);
578 }
579
580 #endif                          /* ACPI_NO_METHOD_EXECUTION */
581
582 /*******************************************************************************
583  *
584  * FUNCTION:    acpi_ds_init_object_from_op
585  *
586  * PARAMETERS:  walk_state      - Current walk state
587  *              Op              - Parser op used to init the internal object
588  *              Opcode          - AML opcode associated with the object
589  *              ret_obj_desc    - Namespace object to be initialized
590  *
591  * RETURN:      Status
592  *
593  * DESCRIPTION: Initialize a namespace object from a parser Op and its
594  *              associated arguments.  The namespace object is a more compact
595  *              representation of the Op and its arguments.
596  *
597  ******************************************************************************/
598
599 acpi_status
600 acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state,
601                             union acpi_parse_object *op,
602                             u16 opcode,
603                             union acpi_operand_object **ret_obj_desc)
604 {
605         const struct acpi_opcode_info *op_info;
606         union acpi_operand_object *obj_desc;
607         acpi_status status = AE_OK;
608
609         ACPI_FUNCTION_TRACE(ds_init_object_from_op);
610
611         obj_desc = *ret_obj_desc;
612         op_info = acpi_ps_get_opcode_info(opcode);
613         if (op_info->class == AML_CLASS_UNKNOWN) {
614
615                 /* Unknown opcode */
616
617                 return_ACPI_STATUS(AE_TYPE);
618         }
619
620         /* Perform per-object initialization */
621
622         switch (obj_desc->common.type) {
623         case ACPI_TYPE_BUFFER:
624
625                 /*
626                  * Defer evaluation of Buffer term_arg operand
627                  */
628                 obj_desc->buffer.node =
629                     ACPI_CAST_PTR(struct acpi_namespace_node,
630                                   walk_state->operands[0]);
631                 obj_desc->buffer.aml_start = op->named.data;
632                 obj_desc->buffer.aml_length = op->named.length;
633                 break;
634
635         case ACPI_TYPE_PACKAGE:
636
637                 /*
638                  * Defer evaluation of Package term_arg operand
639                  */
640                 obj_desc->package.node =
641                     ACPI_CAST_PTR(struct acpi_namespace_node,
642                                   walk_state->operands[0]);
643                 obj_desc->package.aml_start = op->named.data;
644                 obj_desc->package.aml_length = op->named.length;
645                 break;
646
647         case ACPI_TYPE_INTEGER:
648
649                 switch (op_info->type) {
650                 case AML_TYPE_CONSTANT:
651                         /*
652                          * Resolve AML Constants here - AND ONLY HERE!
653                          * All constants are integers.
654                          * We mark the integer with a flag that indicates that it started
655                          * life as a constant -- so that stores to constants will perform
656                          * as expected (noop). zero_op is used as a placeholder for optional
657                          * target operands.
658                          */
659                         obj_desc->common.flags = AOPOBJ_AML_CONSTANT;
660
661                         switch (opcode) {
662                         case AML_ZERO_OP:
663
664                                 obj_desc->integer.value = 0;
665                                 break;
666
667                         case AML_ONE_OP:
668
669                                 obj_desc->integer.value = 1;
670                                 break;
671
672                         case AML_ONES_OP:
673
674                                 obj_desc->integer.value = ACPI_INTEGER_MAX;
675
676                                 /* Truncate value if we are executing from a 32-bit ACPI table */
677
678 #ifndef ACPI_NO_METHOD_EXECUTION
679                                 acpi_ex_truncate_for32bit_table(obj_desc);
680 #endif
681                                 break;
682
683                         case AML_REVISION_OP:
684
685                                 obj_desc->integer.value = ACPI_CA_VERSION;
686                                 break;
687
688                         default:
689
690                                 ACPI_ERROR((AE_INFO,
691                                             "Unknown constant opcode %X",
692                                             opcode));
693                                 status = AE_AML_OPERAND_TYPE;
694                                 break;
695                         }
696                         break;
697
698                 case AML_TYPE_LITERAL:
699
700                         obj_desc->integer.value = op->common.value.integer;
701 #ifndef ACPI_NO_METHOD_EXECUTION
702                         acpi_ex_truncate_for32bit_table(obj_desc);
703 #endif
704                         break;
705
706                 default:
707                         ACPI_ERROR((AE_INFO, "Unknown Integer type %X",
708                                     op_info->type));
709                         status = AE_AML_OPERAND_TYPE;
710                         break;
711                 }
712                 break;
713
714         case ACPI_TYPE_STRING:
715
716                 obj_desc->string.pointer = op->common.value.string;
717                 obj_desc->string.length =
718                     (u32) ACPI_STRLEN(op->common.value.string);
719
720                 /*
721                  * The string is contained in the ACPI table, don't ever try
722                  * to delete it
723                  */
724                 obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
725                 break;
726
727         case ACPI_TYPE_METHOD:
728                 break;
729
730         case ACPI_TYPE_LOCAL_REFERENCE:
731
732                 switch (op_info->type) {
733                 case AML_TYPE_LOCAL_VARIABLE:
734
735                         /* Local ID (0-7) is (AML opcode - base AML_LOCAL_OP) */
736
737                         obj_desc->reference.value = opcode - AML_LOCAL_OP;
738                         obj_desc->reference.class = ACPI_REFCLASS_LOCAL;
739
740 #ifndef ACPI_NO_METHOD_EXECUTION
741                         status =
742                             acpi_ds_method_data_get_node(ACPI_REFCLASS_LOCAL,
743                                                          obj_desc->reference.
744                                                          value, walk_state,
745                                                          ACPI_CAST_INDIRECT_PTR
746                                                          (struct
747                                                           acpi_namespace_node,
748                                                           &obj_desc->reference.
749                                                           object));
750 #endif
751                         break;
752
753                 case AML_TYPE_METHOD_ARGUMENT:
754
755                         /* Arg ID (0-6) is (AML opcode - base AML_ARG_OP) */
756
757                         obj_desc->reference.value = opcode - AML_ARG_OP;
758                         obj_desc->reference.class = ACPI_REFCLASS_ARG;
759
760 #ifndef ACPI_NO_METHOD_EXECUTION
761                         status = acpi_ds_method_data_get_node(ACPI_REFCLASS_ARG,
762                                                               obj_desc->
763                                                               reference.value,
764                                                               walk_state,
765                                                               ACPI_CAST_INDIRECT_PTR
766                                                               (struct
767                                                                acpi_namespace_node,
768                                                                &obj_desc->
769                                                                reference.
770                                                                object));
771 #endif
772                         break;
773
774                 default:        /* Object name or Debug object */
775
776                         switch (op->common.aml_opcode) {
777                         case AML_INT_NAMEPATH_OP:
778
779                                 /* Node was saved in Op */
780
781                                 obj_desc->reference.node = op->common.node;
782                                 obj_desc->reference.object =
783                                     op->common.node->object;
784                                 obj_desc->reference.class = ACPI_REFCLASS_NAME;
785                                 break;
786
787                         case AML_DEBUG_OP:
788
789                                 obj_desc->reference.class = ACPI_REFCLASS_DEBUG;
790                                 break;
791
792                         default:
793
794                                 ACPI_ERROR((AE_INFO,
795                                             "Unimplemented reference type for AML opcode: %4.4X",
796                                             opcode));
797                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
798                         }
799                         break;
800                 }
801                 break;
802
803         default:
804
805                 ACPI_ERROR((AE_INFO, "Unimplemented data type: %X",
806                             obj_desc->common.type));
807
808                 status = AE_AML_OPERAND_TYPE;
809                 break;
810         }
811
812         return_ACPI_STATUS(status);
813 }