blob: 149e9b9c2c1b1e3fbb8349de7338697b540d976d [file] [log] [blame]
Bob Mooread5babe2009-11-12 09:44:06 +08001/******************************************************************************
2 *
3 * Module Name: nsrepair2 - Repair for objects returned by specific
4 * predefined methods
5 *
6 *****************************************************************************/
7
8/*
Bob Moore25f044e2013-01-25 05:38:56 +00009 * Copyright (C) 2000 - 2013, Intel Corp.
Bob Mooread5babe2009-11-12 09:44:06 +080010 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
30 *
31 * NO WARRANTY
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
43 */
44
45#include <acpi/acpi.h>
46#include "accommon.h"
47#include "acnamesp.h"
48
49#define _COMPONENT ACPI_NAMESPACE
50ACPI_MODULE_NAME("nsrepair2")
51
52/*
53 * Information structure and handler for ACPI predefined names that can
54 * be repaired on a per-name basis.
55 */
56typedef
57acpi_status(*acpi_repair_function) (struct acpi_predefined_data *data,
Lv Zheng3e8214e2012-12-19 05:37:15 +000058 union acpi_operand_object
59 **return_object_ptr);
Bob Mooread5babe2009-11-12 09:44:06 +080060
61typedef struct acpi_repair_info {
62 char name[ACPI_NAME_SIZE];
63 acpi_repair_function repair_function;
64
65} acpi_repair_info;
66
67/* Local prototypes */
68
Bob Moored5a36102013-03-08 09:23:03 +000069static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct
70 acpi_namespace_node
71 *node);
Bob Mooread5babe2009-11-12 09:44:06 +080072
73static acpi_status
74acpi_ns_repair_ALR(struct acpi_predefined_data *data,
75 union acpi_operand_object **return_object_ptr);
76
77static acpi_status
Bob Moore77b23f7122010-09-15 14:11:02 +080078acpi_ns_repair_CID(struct acpi_predefined_data *data,
79 union acpi_operand_object **return_object_ptr);
80
81static acpi_status
Bob Moore34c39c72009-12-11 14:53:11 +080082acpi_ns_repair_FDE(struct acpi_predefined_data *data,
83 union acpi_operand_object **return_object_ptr);
84
85static acpi_status
Bob Moore77b23f7122010-09-15 14:11:02 +080086acpi_ns_repair_HID(struct acpi_predefined_data *data,
87 union acpi_operand_object **return_object_ptr);
88
89static acpi_status
Bob Mooread5babe2009-11-12 09:44:06 +080090acpi_ns_repair_PSS(struct acpi_predefined_data *data,
91 union acpi_operand_object **return_object_ptr);
92
93static acpi_status
94acpi_ns_repair_TSS(struct acpi_predefined_data *data,
95 union acpi_operand_object **return_object_ptr);
96
97static acpi_status
98acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
99 union acpi_operand_object *return_object,
100 u32 expected_count,
101 u32 sort_index,
102 u8 sort_direction, char *sort_key_name);
103
Bob Moore2147d3f2010-01-21 09:08:31 +0800104static void
Bob Mooread5babe2009-11-12 09:44:06 +0800105acpi_ns_sort_list(union acpi_operand_object **elements,
106 u32 count, u32 index, u8 sort_direction);
107
108/* Values for sort_direction above */
109
110#define ACPI_SORT_ASCENDING 0
111#define ACPI_SORT_DESCENDING 1
112
113/*
114 * This table contains the names of the predefined methods for which we can
115 * perform more complex repairs.
116 *
Bob Moore34c39c72009-12-11 14:53:11 +0800117 * As necessary:
118 *
119 * _ALR: Sort the list ascending by ambient_illuminance
Bob Moore77b23f7122010-09-15 14:11:02 +0800120 * _CID: Strings: uppercase all, remove any leading asterisk
Bob Moore43420bb2009-12-11 15:24:27 +0800121 * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs
122 * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
Bob Moore77b23f7122010-09-15 14:11:02 +0800123 * _HID: Strings: uppercase all, remove any leading asterisk
Bob Moore34c39c72009-12-11 14:53:11 +0800124 * _PSS: Sort the list descending by Power
125 * _TSS: Sort the list descending by Power
Bob Mooreaa9d3602010-05-26 11:03:56 +0800126 *
127 * Names that must be packages, but cannot be sorted:
128 *
129 * _BCL: Values are tied to the Package index where they appear, and cannot
130 * be moved or sorted. These index values are used for _BQC and _BCM.
131 * However, we can fix the case where a buffer is returned, by converting
132 * it to a Package of integers.
Bob Mooread5babe2009-11-12 09:44:06 +0800133 */
134static const struct acpi_repair_info acpi_ns_repairable_names[] = {
135 {"_ALR", acpi_ns_repair_ALR},
Bob Moore77b23f7122010-09-15 14:11:02 +0800136 {"_CID", acpi_ns_repair_CID},
Bob Moore34c39c72009-12-11 14:53:11 +0800137 {"_FDE", acpi_ns_repair_FDE},
138 {"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */
Bob Moore77b23f7122010-09-15 14:11:02 +0800139 {"_HID", acpi_ns_repair_HID},
Bob Mooread5babe2009-11-12 09:44:06 +0800140 {"_PSS", acpi_ns_repair_PSS},
141 {"_TSS", acpi_ns_repair_TSS},
142 {{0, 0, 0, 0}, NULL} /* Table terminator */
143};
144
Bob Moore34c39c72009-12-11 14:53:11 +0800145#define ACPI_FDE_FIELD_COUNT 5
146#define ACPI_FDE_BYTE_BUFFER_SIZE 5
147#define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * sizeof (u32))
148
Bob Mooread5babe2009-11-12 09:44:06 +0800149/******************************************************************************
150 *
151 * FUNCTION: acpi_ns_complex_repairs
152 *
Bob Mooreba494be2012-07-12 09:40:10 +0800153 * PARAMETERS: data - Pointer to validation data structure
154 * node - Namespace node for the method/object
Bob Mooread5babe2009-11-12 09:44:06 +0800155 * validate_status - Original status of earlier validation
156 * return_object_ptr - Pointer to the object returned from the
157 * evaluation of a method or object
158 *
159 * RETURN: Status. AE_OK if repair was successful. If name is not
160 * matched, validate_status is returned.
161 *
162 * DESCRIPTION: Attempt to repair/convert a return object of a type that was
163 * not expected.
164 *
165 *****************************************************************************/
166
167acpi_status
168acpi_ns_complex_repairs(struct acpi_predefined_data *data,
169 struct acpi_namespace_node *node,
170 acpi_status validate_status,
171 union acpi_operand_object **return_object_ptr)
172{
173 const struct acpi_repair_info *predefined;
174 acpi_status status;
175
176 /* Check if this name is in the list of repairable names */
177
Bob Moored5a36102013-03-08 09:23:03 +0000178 predefined = acpi_ns_match_complex_repair(node);
Bob Mooread5babe2009-11-12 09:44:06 +0800179 if (!predefined) {
180 return (validate_status);
181 }
182
183 status = predefined->repair_function(data, return_object_ptr);
184 return (status);
185}
186
187/******************************************************************************
188 *
Bob Moored5a36102013-03-08 09:23:03 +0000189 * FUNCTION: acpi_ns_match_complex_repair
Bob Mooread5babe2009-11-12 09:44:06 +0800190 *
Bob Mooreba494be2012-07-12 09:40:10 +0800191 * PARAMETERS: node - Namespace node for the method/object
Bob Mooread5babe2009-11-12 09:44:06 +0800192 *
193 * RETURN: Pointer to entry in repair table. NULL indicates not found.
194 *
195 * DESCRIPTION: Check an object name against the repairable object list.
196 *
197 *****************************************************************************/
198
Bob Moored5a36102013-03-08 09:23:03 +0000199static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct
200 acpi_namespace_node
201 *node)
Bob Mooread5babe2009-11-12 09:44:06 +0800202{
203 const struct acpi_repair_info *this_name;
204
205 /* Search info table for a repairable predefined method/object name */
206
207 this_name = acpi_ns_repairable_names;
208 while (this_name->repair_function) {
209 if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) {
210 return (this_name);
211 }
212 this_name++;
213 }
214
215 return (NULL); /* Not found */
216}
217
218/******************************************************************************
219 *
220 * FUNCTION: acpi_ns_repair_ALR
221 *
Bob Mooreba494be2012-07-12 09:40:10 +0800222 * PARAMETERS: data - Pointer to validation data structure
Bob Mooread5babe2009-11-12 09:44:06 +0800223 * return_object_ptr - Pointer to the object returned from the
224 * evaluation of a method or object
225 *
226 * RETURN: Status. AE_OK if object is OK or was repaired successfully
227 *
228 * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list
229 * ascending by the ambient illuminance values.
230 *
231 *****************************************************************************/
232
233static acpi_status
234acpi_ns_repair_ALR(struct acpi_predefined_data *data,
235 union acpi_operand_object **return_object_ptr)
236{
237 union acpi_operand_object *return_object = *return_object_ptr;
238 acpi_status status;
239
240 status = acpi_ns_check_sorted_list(data, return_object, 2, 1,
241 ACPI_SORT_ASCENDING,
242 "AmbientIlluminance");
243
244 return (status);
245}
246
247/******************************************************************************
248 *
Bob Moore34c39c72009-12-11 14:53:11 +0800249 * FUNCTION: acpi_ns_repair_FDE
250 *
Bob Mooreba494be2012-07-12 09:40:10 +0800251 * PARAMETERS: data - Pointer to validation data structure
Bob Moore34c39c72009-12-11 14:53:11 +0800252 * return_object_ptr - Pointer to the object returned from the
253 * evaluation of a method or object
254 *
255 * RETURN: Status. AE_OK if object is OK or was repaired successfully
256 *
257 * DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return
Bob Moore43420bb2009-12-11 15:24:27 +0800258 * value is a Buffer of 5 DWORDs. This function repairs a common
259 * problem where the return value is a Buffer of BYTEs, not
260 * DWORDs.
Bob Moore34c39c72009-12-11 14:53:11 +0800261 *
262 *****************************************************************************/
263
264static acpi_status
265acpi_ns_repair_FDE(struct acpi_predefined_data *data,
266 union acpi_operand_object **return_object_ptr)
267{
268 union acpi_operand_object *return_object = *return_object_ptr;
Bob Moore34c39c72009-12-11 14:53:11 +0800269 union acpi_operand_object *buffer_object;
270 u8 *byte_buffer;
271 u32 *dword_buffer;
Bob Moore34c39c72009-12-11 14:53:11 +0800272 u32 i;
273
Bob Moore3a581762009-12-11 15:23:22 +0800274 ACPI_FUNCTION_NAME(ns_repair_FDE);
275
Bob Moore34c39c72009-12-11 14:53:11 +0800276 switch (return_object->common.type) {
277 case ACPI_TYPE_BUFFER:
278
279 /* This is the expected type. Length should be (at least) 5 DWORDs */
280
281 if (return_object->buffer.length >= ACPI_FDE_DWORD_BUFFER_SIZE) {
282 return (AE_OK);
283 }
284
285 /* We can only repair if we have exactly 5 BYTEs */
286
287 if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) {
288 ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
289 data->node_flags,
290 "Incorrect return buffer length %u, expected %u",
291 return_object->buffer.length,
292 ACPI_FDE_DWORD_BUFFER_SIZE));
293
294 return (AE_AML_OPERAND_TYPE);
295 }
296
297 /* Create the new (larger) buffer object */
298
299 buffer_object =
300 acpi_ut_create_buffer_object(ACPI_FDE_DWORD_BUFFER_SIZE);
301 if (!buffer_object) {
302 return (AE_NO_MEMORY);
303 }
304
305 /* Expand each byte to a DWORD */
306
307 byte_buffer = return_object->buffer.pointer;
308 dword_buffer =
309 ACPI_CAST_PTR(u32, buffer_object->buffer.pointer);
310
311 for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) {
312 *dword_buffer = (u32) *byte_buffer;
313 dword_buffer++;
314 byte_buffer++;
315 }
316
Bob Moore3a581762009-12-11 15:23:22 +0800317 ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
318 "%s Expanded Byte Buffer to expected DWord Buffer\n",
319 data->pathname));
Bob Moore34c39c72009-12-11 14:53:11 +0800320 break;
321
Bob Moore34c39c72009-12-11 14:53:11 +0800322 default:
323 return (AE_AML_OPERAND_TYPE);
324 }
325
326 /* Delete the original return object, return the new buffer object */
327
328 acpi_ut_remove_reference(return_object);
329 *return_object_ptr = buffer_object;
330
331 data->flags |= ACPI_OBJECT_REPAIRED;
332 return (AE_OK);
333}
334
335/******************************************************************************
336 *
Bob Moore77b23f7122010-09-15 14:11:02 +0800337 * FUNCTION: acpi_ns_repair_CID
338 *
Bob Mooreba494be2012-07-12 09:40:10 +0800339 * PARAMETERS: data - Pointer to validation data structure
Bob Moore77b23f7122010-09-15 14:11:02 +0800340 * return_object_ptr - Pointer to the object returned from the
341 * evaluation of a method or object
342 *
343 * RETURN: Status. AE_OK if object is OK or was repaired successfully
344 *
345 * DESCRIPTION: Repair for the _CID object. If a string, ensure that all
346 * letters are uppercase and that there is no leading asterisk.
347 * If a Package, ensure same for all string elements.
348 *
349 *****************************************************************************/
350
351static acpi_status
352acpi_ns_repair_CID(struct acpi_predefined_data *data,
353 union acpi_operand_object **return_object_ptr)
354{
355 acpi_status status;
356 union acpi_operand_object *return_object = *return_object_ptr;
357 union acpi_operand_object **element_ptr;
358 union acpi_operand_object *original_element;
359 u16 original_ref_count;
360 u32 i;
361
362 /* Check for _CID as a simple string */
363
364 if (return_object->common.type == ACPI_TYPE_STRING) {
365 status = acpi_ns_repair_HID(data, return_object_ptr);
366 return (status);
367 }
368
369 /* Exit if not a Package */
370
371 if (return_object->common.type != ACPI_TYPE_PACKAGE) {
372 return (AE_OK);
373 }
374
375 /* Examine each element of the _CID package */
376
377 element_ptr = return_object->package.elements;
378 for (i = 0; i < return_object->package.count; i++) {
379 original_element = *element_ptr;
380 original_ref_count = original_element->common.reference_count;
381
382 status = acpi_ns_repair_HID(data, element_ptr);
383 if (ACPI_FAILURE(status)) {
384 return (status);
385 }
386
387 /* Take care with reference counts */
388
389 if (original_element != *element_ptr) {
390
391 /* Element was replaced */
392
393 (*element_ptr)->common.reference_count =
394 original_ref_count;
395
396 acpi_ut_remove_reference(original_element);
397 }
398
399 element_ptr++;
400 }
401
402 return (AE_OK);
403}
404
405/******************************************************************************
406 *
407 * FUNCTION: acpi_ns_repair_HID
408 *
Bob Mooreba494be2012-07-12 09:40:10 +0800409 * PARAMETERS: data - Pointer to validation data structure
Bob Moore77b23f7122010-09-15 14:11:02 +0800410 * return_object_ptr - Pointer to the object returned from the
411 * evaluation of a method or object
412 *
413 * RETURN: Status. AE_OK if object is OK or was repaired successfully
414 *
415 * DESCRIPTION: Repair for the _HID object. If a string, ensure that all
416 * letters are uppercase and that there is no leading asterisk.
417 *
418 *****************************************************************************/
419
420static acpi_status
421acpi_ns_repair_HID(struct acpi_predefined_data *data,
422 union acpi_operand_object **return_object_ptr)
423{
424 union acpi_operand_object *return_object = *return_object_ptr;
425 union acpi_operand_object *new_string;
426 char *source;
427 char *dest;
428
429 ACPI_FUNCTION_NAME(ns_repair_HID);
430
431 /* We only care about string _HID objects (not integers) */
432
433 if (return_object->common.type != ACPI_TYPE_STRING) {
434 return (AE_OK);
435 }
436
437 if (return_object->string.length == 0) {
438 ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
439 "Invalid zero-length _HID or _CID string"));
440
441 /* Return AE_OK anyway, let driver handle it */
442
443 data->flags |= ACPI_OBJECT_REPAIRED;
444 return (AE_OK);
445 }
446
447 /* It is simplest to always create a new string object */
448
449 new_string = acpi_ut_create_string_object(return_object->string.length);
450 if (!new_string) {
451 return (AE_NO_MEMORY);
452 }
453
454 /*
455 * Remove a leading asterisk if present. For some unknown reason, there
456 * are many machines in the field that contains IDs like this.
457 *
458 * Examples: "*PNP0C03", "*ACPI0003"
459 */
460 source = return_object->string.pointer;
461 if (*source == '*') {
462 source++;
463 new_string->string.length--;
464
465 ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
466 "%s: Removed invalid leading asterisk\n",
467 data->pathname));
468 }
469
470 /*
Bob Moore7fce7a42011-11-16 14:59:17 +0800471 * Copy and uppercase the string. From the ACPI 5.0 specification:
Bob Moore77b23f7122010-09-15 14:11:02 +0800472 *
473 * A valid PNP ID must be of the form "AAA####" where A is an uppercase
474 * letter and # is a hex digit. A valid ACPI ID must be of the form
Bob Moore7fce7a42011-11-16 14:59:17 +0800475 * "NNNN####" where N is an uppercase letter or decimal digit, and
476 * # is a hex digit.
Bob Moore77b23f7122010-09-15 14:11:02 +0800477 */
478 for (dest = new_string->string.pointer; *source; dest++, source++) {
479 *dest = (char)ACPI_TOUPPER(*source);
480 }
481
482 acpi_ut_remove_reference(return_object);
483 *return_object_ptr = new_string;
484 return (AE_OK);
485}
486
487/******************************************************************************
488 *
Bob Mooread5babe2009-11-12 09:44:06 +0800489 * FUNCTION: acpi_ns_repair_TSS
490 *
Bob Mooreba494be2012-07-12 09:40:10 +0800491 * PARAMETERS: data - Pointer to validation data structure
Bob Mooread5babe2009-11-12 09:44:06 +0800492 * return_object_ptr - Pointer to the object returned from the
493 * evaluation of a method or object
494 *
495 * RETURN: Status. AE_OK if object is OK or was repaired successfully
496 *
497 * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
498 * descending by the power dissipation values.
499 *
500 *****************************************************************************/
501
502static acpi_status
503acpi_ns_repair_TSS(struct acpi_predefined_data *data,
504 union acpi_operand_object **return_object_ptr)
505{
506 union acpi_operand_object *return_object = *return_object_ptr;
507 acpi_status status;
Fenghua Yu8f9c9122011-07-04 08:36:16 +0000508 struct acpi_namespace_node *node;
509
510 /*
511 * We can only sort the _TSS return package if there is no _PSS in the
512 * same scope. This is because if _PSS is present, the ACPI specification
513 * dictates that the _TSS Power Dissipation field is to be ignored, and
514 * therefore some BIOSs leave garbage values in the _TSS Power field(s).
515 * In this case, it is best to just return the _TSS package as-is.
516 * (May, 2011)
517 */
518 status =
519 acpi_ns_get_node(data->node, "^_PSS", ACPI_NS_NO_UPSEARCH, &node);
520 if (ACPI_SUCCESS(status)) {
521 return (AE_OK);
522 }
Bob Mooread5babe2009-11-12 09:44:06 +0800523
524 status = acpi_ns_check_sorted_list(data, return_object, 5, 1,
525 ACPI_SORT_DESCENDING,
526 "PowerDissipation");
527
528 return (status);
529}
530
531/******************************************************************************
532 *
533 * FUNCTION: acpi_ns_repair_PSS
534 *
Bob Mooreba494be2012-07-12 09:40:10 +0800535 * PARAMETERS: data - Pointer to validation data structure
Bob Mooread5babe2009-11-12 09:44:06 +0800536 * return_object_ptr - Pointer to the object returned from the
537 * evaluation of a method or object
538 *
539 * RETURN: Status. AE_OK if object is OK or was repaired successfully
540 *
541 * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list
542 * by the CPU frequencies. Check that the power dissipation values
543 * are all proportional to CPU frequency (i.e., sorting by
544 * frequency should be the same as sorting by power.)
545 *
546 *****************************************************************************/
547
548static acpi_status
549acpi_ns_repair_PSS(struct acpi_predefined_data *data,
550 union acpi_operand_object **return_object_ptr)
551{
552 union acpi_operand_object *return_object = *return_object_ptr;
553 union acpi_operand_object **outer_elements;
554 u32 outer_element_count;
555 union acpi_operand_object **elements;
556 union acpi_operand_object *obj_desc;
557 u32 previous_value;
558 acpi_status status;
559 u32 i;
560
561 /*
562 * Entries (sub-packages) in the _PSS Package must be sorted by power
563 * dissipation, in descending order. If it appears that the list is
564 * incorrectly sorted, sort it. We sort by cpu_frequency, since this
565 * should be proportional to the power.
566 */
567 status = acpi_ns_check_sorted_list(data, return_object, 6, 0,
568 ACPI_SORT_DESCENDING,
569 "CpuFrequency");
570 if (ACPI_FAILURE(status)) {
571 return (status);
572 }
573
574 /*
575 * We now know the list is correctly sorted by CPU frequency. Check if
576 * the power dissipation values are proportional.
577 */
578 previous_value = ACPI_UINT32_MAX;
579 outer_elements = return_object->package.elements;
580 outer_element_count = return_object->package.count;
581
582 for (i = 0; i < outer_element_count; i++) {
583 elements = (*outer_elements)->package.elements;
584 obj_desc = elements[1]; /* Index1 = power_dissipation */
585
586 if ((u32) obj_desc->integer.value > previous_value) {
587 ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
588 data->node_flags,
589 "SubPackage[%u,%u] - suspicious power dissipation values",
590 i - 1, i));
591 }
592
593 previous_value = (u32) obj_desc->integer.value;
594 outer_elements++;
595 }
596
597 return (AE_OK);
598}
599
600/******************************************************************************
601 *
602 * FUNCTION: acpi_ns_check_sorted_list
603 *
Bob Mooreba494be2012-07-12 09:40:10 +0800604 * PARAMETERS: data - Pointer to validation data structure
Bob Mooread5babe2009-11-12 09:44:06 +0800605 * return_object - Pointer to the top-level returned object
606 * expected_count - Minimum length of each sub-package
607 * sort_index - Sub-package entry to sort on
608 * sort_direction - Ascending or descending
609 * sort_key_name - Name of the sort_index field
610 *
611 * RETURN: Status. AE_OK if the list is valid and is sorted correctly or
612 * has been repaired by sorting the list.
613 *
614 * DESCRIPTION: Check if the package list is valid and sorted correctly by the
615 * sort_index. If not, then sort the list.
616 *
617 *****************************************************************************/
618
619static acpi_status
620acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
621 union acpi_operand_object *return_object,
622 u32 expected_count,
623 u32 sort_index,
624 u8 sort_direction, char *sort_key_name)
625{
626 u32 outer_element_count;
627 union acpi_operand_object **outer_elements;
628 union acpi_operand_object **elements;
629 union acpi_operand_object *obj_desc;
630 u32 i;
631 u32 previous_value;
Bob Mooread5babe2009-11-12 09:44:06 +0800632
Bob Moore3a581762009-12-11 15:23:22 +0800633 ACPI_FUNCTION_NAME(ns_check_sorted_list);
634
Bob Mooread5babe2009-11-12 09:44:06 +0800635 /* The top-level object must be a package */
636
637 if (return_object->common.type != ACPI_TYPE_PACKAGE) {
638 return (AE_AML_OPERAND_TYPE);
639 }
640
641 /*
Bob Moored4085a3f2009-12-11 15:29:44 +0800642 * NOTE: assumes list of sub-packages contains no NULL elements.
643 * Any NULL elements should have been removed by earlier call
644 * to acpi_ns_remove_null_elements.
Bob Mooread5babe2009-11-12 09:44:06 +0800645 */
Bob Mooread5babe2009-11-12 09:44:06 +0800646 outer_elements = return_object->package.elements;
647 outer_element_count = return_object->package.count;
648 if (!outer_element_count) {
649 return (AE_AML_PACKAGE_LIMIT);
650 }
651
652 previous_value = 0;
653 if (sort_direction == ACPI_SORT_DESCENDING) {
654 previous_value = ACPI_UINT32_MAX;
655 }
656
657 /* Examine each subpackage */
658
659 for (i = 0; i < outer_element_count; i++) {
660
661 /* Each element of the top-level package must also be a package */
662
663 if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) {
664 return (AE_AML_OPERAND_TYPE);
665 }
666
667 /* Each sub-package must have the minimum length */
668
669 if ((*outer_elements)->package.count < expected_count) {
670 return (AE_AML_PACKAGE_LIMIT);
671 }
672
673 elements = (*outer_elements)->package.elements;
674 obj_desc = elements[sort_index];
675
676 if (obj_desc->common.type != ACPI_TYPE_INTEGER) {
677 return (AE_AML_OPERAND_TYPE);
678 }
679
680 /*
681 * The list must be sorted in the specified order. If we detect a
Bob Moore2147d3f2010-01-21 09:08:31 +0800682 * discrepancy, sort the entire list.
Bob Mooread5babe2009-11-12 09:44:06 +0800683 */
684 if (((sort_direction == ACPI_SORT_ASCENDING) &&
685 (obj_desc->integer.value < previous_value)) ||
686 ((sort_direction == ACPI_SORT_DESCENDING) &&
687 (obj_desc->integer.value > previous_value))) {
Bob Moore2147d3f2010-01-21 09:08:31 +0800688 acpi_ns_sort_list(return_object->package.elements,
689 outer_element_count, sort_index,
690 sort_direction);
Bob Mooread5babe2009-11-12 09:44:06 +0800691
692 data->flags |= ACPI_OBJECT_REPAIRED;
693
Bob Moore3a581762009-12-11 15:23:22 +0800694 ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
695 "%s: Repaired unsorted list - now sorted by %s\n",
696 data->pathname, sort_key_name));
Bob Mooread5babe2009-11-12 09:44:06 +0800697 return (AE_OK);
698 }
699
700 previous_value = (u32) obj_desc->integer.value;
701 outer_elements++;
702 }
703
704 return (AE_OK);
705}
706
707/******************************************************************************
708 *
Bob Mooread5babe2009-11-12 09:44:06 +0800709 * FUNCTION: acpi_ns_sort_list
710 *
Bob Mooreba494be2012-07-12 09:40:10 +0800711 * PARAMETERS: elements - Package object element list
712 * count - Element count for above
713 * index - Sort by which package element
Bob Mooread5babe2009-11-12 09:44:06 +0800714 * sort_direction - Ascending or Descending sort
715 *
Bob Moore2147d3f2010-01-21 09:08:31 +0800716 * RETURN: None
Bob Mooread5babe2009-11-12 09:44:06 +0800717 *
718 * DESCRIPTION: Sort the objects that are in a package element list.
719 *
Bob Moore2147d3f2010-01-21 09:08:31 +0800720 * NOTE: Assumes that all NULL elements have been removed from the package,
721 * and that all elements have been verified to be of type Integer.
Bob Mooread5babe2009-11-12 09:44:06 +0800722 *
723 *****************************************************************************/
724
Bob Moore2147d3f2010-01-21 09:08:31 +0800725static void
Bob Mooread5babe2009-11-12 09:44:06 +0800726acpi_ns_sort_list(union acpi_operand_object **elements,
727 u32 count, u32 index, u8 sort_direction)
728{
729 union acpi_operand_object *obj_desc1;
730 union acpi_operand_object *obj_desc2;
731 union acpi_operand_object *temp_obj;
732 u32 i;
733 u32 j;
734
735 /* Simple bubble sort */
736
737 for (i = 1; i < count; i++) {
738 for (j = (count - 1); j >= i; j--) {
739 obj_desc1 = elements[j - 1]->package.elements[index];
740 obj_desc2 = elements[j]->package.elements[index];
741
742 if (((sort_direction == ACPI_SORT_ASCENDING) &&
743 (obj_desc1->integer.value >
744 obj_desc2->integer.value))
745 || ((sort_direction == ACPI_SORT_DESCENDING)
746 && (obj_desc1->integer.value <
747 obj_desc2->integer.value))) {
748 temp_obj = elements[j - 1];
749 elements[j - 1] = elements[j];
750 elements[j] = temp_obj;
751 }
752 }
753 }
Bob Mooread5babe2009-11-12 09:44:06 +0800754}