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951 lines
29 KiB
951 lines
29 KiB
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
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/****************************************************************************** |
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* |
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* Module Name: nsrepair2 - Repair for objects returned by specific |
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* predefined methods |
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* |
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* Copyright (C) 2000 - 2022, Intel Corp. |
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* |
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*****************************************************************************/ |
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|
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#include <acpi/acpi.h> |
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#include "accommon.h" |
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#include "acnamesp.h" |
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|
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#define _COMPONENT ACPI_NAMESPACE |
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ACPI_MODULE_NAME("nsrepair2") |
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|
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/* |
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* Information structure and handler for ACPI predefined names that can |
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* be repaired on a per-name basis. |
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*/ |
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typedef |
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acpi_status (*acpi_repair_function) (struct acpi_evaluate_info * info, |
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union acpi_operand_object ** |
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return_object_ptr); |
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typedef struct acpi_repair_info { |
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char name[ACPI_NAMESEG_SIZE]; |
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acpi_repair_function repair_function; |
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} acpi_repair_info; |
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|
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/* Local prototypes */ |
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static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct |
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acpi_namespace_node |
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*node); |
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static acpi_status |
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acpi_ns_repair_ALR(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_repair_CID(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_repair_CST(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_repair_FDE(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_repair_HID(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_repair_PRT(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_repair_TSS(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr); |
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static acpi_status |
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acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
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union acpi_operand_object *return_object, |
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u32 start_index, |
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u32 expected_count, |
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u32 sort_index, |
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u8 sort_direction, char *sort_key_name); |
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/* Values for sort_direction above */ |
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#define ACPI_SORT_ASCENDING 0 |
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#define ACPI_SORT_DESCENDING 1 |
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static void |
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acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index); |
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static void |
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acpi_ns_sort_list(union acpi_operand_object **elements, |
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u32 count, u32 index, u8 sort_direction); |
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/* |
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* This table contains the names of the predefined methods for which we can |
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* perform more complex repairs. |
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* |
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* As necessary: |
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* |
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* _ALR: Sort the list ascending by ambient_illuminance |
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* _CID: Strings: uppercase all, remove any leading asterisk |
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* _CST: Sort the list ascending by C state type |
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* _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs |
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* _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs |
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* _HID: Strings: uppercase all, remove any leading asterisk |
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* _PRT: Fix reversed source_name and source_index |
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* _PSS: Sort the list descending by Power |
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* _TSS: Sort the list descending by Power |
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* |
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* Names that must be packages, but cannot be sorted: |
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* |
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* _BCL: Values are tied to the Package index where they appear, and cannot |
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* be moved or sorted. These index values are used for _BQC and _BCM. |
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* However, we can fix the case where a buffer is returned, by converting |
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* it to a Package of integers. |
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*/ |
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static const struct acpi_repair_info acpi_ns_repairable_names[] = { |
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{"_ALR", acpi_ns_repair_ALR}, |
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{"_CID", acpi_ns_repair_CID}, |
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{"_CST", acpi_ns_repair_CST}, |
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{"_FDE", acpi_ns_repair_FDE}, |
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{"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */ |
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{"_HID", acpi_ns_repair_HID}, |
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{"_PRT", acpi_ns_repair_PRT}, |
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{"_PSS", acpi_ns_repair_PSS}, |
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{"_TSS", acpi_ns_repair_TSS}, |
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{{0, 0, 0, 0}, NULL} /* Table terminator */ |
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}; |
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#define ACPI_FDE_FIELD_COUNT 5 |
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#define ACPI_FDE_BYTE_BUFFER_SIZE 5 |
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#define ACPI_FDE_DWORD_BUFFER_SIZE (ACPI_FDE_FIELD_COUNT * (u32) sizeof (u32)) |
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_complex_repairs |
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* |
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* PARAMETERS: info - Method execution information block |
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* node - Namespace node for the method/object |
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* validate_status - Original status of earlier validation |
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* return_object_ptr - Pointer to the object returned from the |
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* evaluation of a method or object |
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* |
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* RETURN: Status. AE_OK if repair was successful. If name is not |
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* matched, validate_status is returned. |
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* |
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* DESCRIPTION: Attempt to repair/convert a return object of a type that was |
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* not expected. |
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* |
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*****************************************************************************/ |
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acpi_status |
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acpi_ns_complex_repairs(struct acpi_evaluate_info *info, |
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struct acpi_namespace_node *node, |
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acpi_status validate_status, |
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union acpi_operand_object **return_object_ptr) |
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{ |
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const struct acpi_repair_info *predefined; |
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acpi_status status; |
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ACPI_FUNCTION_TRACE(ns_complex_repairs); |
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/* Check if this name is in the list of repairable names */ |
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predefined = acpi_ns_match_complex_repair(node); |
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if (!predefined) { |
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return_ACPI_STATUS(validate_status); |
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} |
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status = predefined->repair_function(info, return_object_ptr); |
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return_ACPI_STATUS(status); |
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} |
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_match_complex_repair |
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* |
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* PARAMETERS: node - Namespace node for the method/object |
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* |
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* RETURN: Pointer to entry in repair table. NULL indicates not found. |
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* |
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* DESCRIPTION: Check an object name against the repairable object list. |
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* |
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*****************************************************************************/ |
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static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct |
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acpi_namespace_node |
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*node) |
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{ |
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const struct acpi_repair_info *this_name; |
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/* Search info table for a repairable predefined method/object name */ |
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this_name = acpi_ns_repairable_names; |
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while (this_name->repair_function) { |
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if (ACPI_COMPARE_NAMESEG(node->name.ascii, this_name->name)) { |
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return (this_name); |
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} |
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this_name++; |
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} |
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return (NULL); /* Not found */ |
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} |
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_repair_ALR |
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* |
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* PARAMETERS: info - Method execution information block |
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* return_object_ptr - Pointer to the object returned from the |
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* evaluation of a method or object |
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* |
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* RETURN: Status. AE_OK if object is OK or was repaired successfully |
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* |
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* DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list |
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* ascending by the ambient illuminance values. |
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* |
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*****************************************************************************/ |
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static acpi_status |
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acpi_ns_repair_ALR(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr) |
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{ |
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union acpi_operand_object *return_object = *return_object_ptr; |
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acpi_status status; |
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status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1, |
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ACPI_SORT_ASCENDING, |
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"AmbientIlluminance"); |
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return (status); |
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} |
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_repair_FDE |
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* |
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* PARAMETERS: info - Method execution information block |
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* return_object_ptr - Pointer to the object returned from the |
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* evaluation of a method or object |
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* |
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* RETURN: Status. AE_OK if object is OK or was repaired successfully |
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* |
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* DESCRIPTION: Repair for the _FDE and _GTM objects. The expected return |
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* value is a Buffer of 5 DWORDs. This function repairs a common |
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* problem where the return value is a Buffer of BYTEs, not |
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* DWORDs. |
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* |
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*****************************************************************************/ |
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static acpi_status |
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acpi_ns_repair_FDE(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr) |
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{ |
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union acpi_operand_object *return_object = *return_object_ptr; |
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union acpi_operand_object *buffer_object; |
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u8 *byte_buffer; |
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u32 *dword_buffer; |
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u32 i; |
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ACPI_FUNCTION_NAME(ns_repair_FDE); |
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switch (return_object->common.type) { |
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case ACPI_TYPE_BUFFER: |
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/* This is the expected type. Length should be (at least) 5 DWORDs */ |
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if (return_object->buffer.length >= ACPI_FDE_DWORD_BUFFER_SIZE) { |
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return (AE_OK); |
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} |
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/* We can only repair if we have exactly 5 BYTEs */ |
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if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) { |
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ACPI_WARN_PREDEFINED((AE_INFO, |
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info->full_pathname, |
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info->node_flags, |
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"Incorrect return buffer length %u, expected %u", |
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return_object->buffer.length, |
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ACPI_FDE_DWORD_BUFFER_SIZE)); |
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return (AE_AML_OPERAND_TYPE); |
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} |
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/* Create the new (larger) buffer object */ |
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buffer_object = |
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acpi_ut_create_buffer_object(ACPI_FDE_DWORD_BUFFER_SIZE); |
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if (!buffer_object) { |
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return (AE_NO_MEMORY); |
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} |
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/* Expand each byte to a DWORD */ |
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byte_buffer = return_object->buffer.pointer; |
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dword_buffer = ACPI_CAST_PTR(u32, |
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buffer_object->buffer.pointer); |
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for (i = 0; i < ACPI_FDE_FIELD_COUNT; i++) { |
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*dword_buffer = (u32) *byte_buffer; |
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dword_buffer++; |
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byte_buffer++; |
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} |
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ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
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"%s Expanded Byte Buffer to expected DWord Buffer\n", |
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info->full_pathname)); |
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break; |
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default: |
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return (AE_AML_OPERAND_TYPE); |
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} |
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/* Delete the original return object, return the new buffer object */ |
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acpi_ut_remove_reference(return_object); |
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*return_object_ptr = buffer_object; |
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info->return_flags |= ACPI_OBJECT_REPAIRED; |
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return (AE_OK); |
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} |
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_repair_CID |
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* |
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* PARAMETERS: info - Method execution information block |
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* return_object_ptr - Pointer to the object returned from the |
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* evaluation of a method or object |
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* |
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* RETURN: Status. AE_OK if object is OK or was repaired successfully |
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* |
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* DESCRIPTION: Repair for the _CID object. If a string, ensure that all |
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* letters are uppercase and that there is no leading asterisk. |
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* If a Package, ensure same for all string elements. |
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* |
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*****************************************************************************/ |
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static acpi_status |
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acpi_ns_repair_CID(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr) |
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{ |
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acpi_status status; |
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union acpi_operand_object *return_object = *return_object_ptr; |
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union acpi_operand_object **element_ptr; |
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union acpi_operand_object *original_element; |
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u16 original_ref_count; |
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u32 i; |
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ACPI_FUNCTION_TRACE(ns_repair_CID); |
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/* Check for _CID as a simple string */ |
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if (return_object->common.type == ACPI_TYPE_STRING) { |
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status = acpi_ns_repair_HID(info, return_object_ptr); |
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return_ACPI_STATUS(status); |
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} |
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/* Exit if not a Package */ |
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if (return_object->common.type != ACPI_TYPE_PACKAGE) { |
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return_ACPI_STATUS(AE_OK); |
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} |
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/* Examine each element of the _CID package */ |
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element_ptr = return_object->package.elements; |
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for (i = 0; i < return_object->package.count; i++) { |
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original_element = *element_ptr; |
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original_ref_count = original_element->common.reference_count; |
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status = acpi_ns_repair_HID(info, element_ptr); |
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if (ACPI_FAILURE(status)) { |
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return_ACPI_STATUS(status); |
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} |
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if (original_element != *element_ptr) { |
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/* Update reference count of new object */ |
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(*element_ptr)->common.reference_count = |
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original_ref_count; |
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} |
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element_ptr++; |
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} |
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return_ACPI_STATUS(AE_OK); |
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} |
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|
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_repair_CST |
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* |
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* PARAMETERS: info - Method execution information block |
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* return_object_ptr - Pointer to the object returned from the |
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* evaluation of a method or object |
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* |
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* RETURN: Status. AE_OK if object is OK or was repaired successfully |
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* |
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* DESCRIPTION: Repair for the _CST object: |
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* 1. Sort the list ascending by C state type |
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* 2. Ensure type cannot be zero |
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* 3. A subpackage count of zero means _CST is meaningless |
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* 4. Count must match the number of C state subpackages |
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* |
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*****************************************************************************/ |
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static acpi_status |
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acpi_ns_repair_CST(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr) |
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{ |
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union acpi_operand_object *return_object = *return_object_ptr; |
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union acpi_operand_object **outer_elements; |
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u32 outer_element_count; |
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union acpi_operand_object *obj_desc; |
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acpi_status status; |
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u8 removing; |
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u32 i; |
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ACPI_FUNCTION_NAME(ns_repair_CST); |
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/* |
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* Check if the C-state type values are proportional. |
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*/ |
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outer_element_count = return_object->package.count - 1; |
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i = 0; |
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while (i < outer_element_count) { |
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outer_elements = &return_object->package.elements[i + 1]; |
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removing = FALSE; |
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if ((*outer_elements)->package.count == 0) { |
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ACPI_WARN_PREDEFINED((AE_INFO, |
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info->full_pathname, |
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info->node_flags, |
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"SubPackage[%u] - removing entry due to zero count", |
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i)); |
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removing = TRUE; |
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goto remove_element; |
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} |
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obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */ |
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if ((u32)obj_desc->integer.value == 0) { |
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ACPI_WARN_PREDEFINED((AE_INFO, |
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info->full_pathname, |
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info->node_flags, |
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"SubPackage[%u] - removing entry due to invalid Type(0)", |
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i)); |
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removing = TRUE; |
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} |
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remove_element: |
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if (removing) { |
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acpi_ns_remove_element(return_object, i + 1); |
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outer_element_count--; |
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} else { |
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i++; |
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} |
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} |
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/* Update top-level package count, Type "Integer" checked elsewhere */ |
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obj_desc = return_object->package.elements[0]; |
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obj_desc->integer.value = outer_element_count; |
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/* |
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* Entries (subpackages) in the _CST Package must be sorted by the |
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* C-state type, in ascending order. |
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*/ |
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status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1, |
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ACPI_SORT_ASCENDING, "C-State Type"); |
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if (ACPI_FAILURE(status)) { |
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return (status); |
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} |
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return (AE_OK); |
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} |
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|
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_repair_HID |
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* |
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* PARAMETERS: info - Method execution information block |
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* return_object_ptr - Pointer to the object returned from the |
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* evaluation of a method or object |
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* |
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* RETURN: Status. AE_OK if object is OK or was repaired successfully |
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* |
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* DESCRIPTION: Repair for the _HID object. If a string, ensure that all |
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* letters are uppercase and that there is no leading asterisk. |
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* |
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*****************************************************************************/ |
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static acpi_status |
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acpi_ns_repair_HID(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr) |
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{ |
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union acpi_operand_object *return_object = *return_object_ptr; |
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union acpi_operand_object *new_string; |
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char *source; |
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char *dest; |
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ACPI_FUNCTION_NAME(ns_repair_HID); |
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/* We only care about string _HID objects (not integers) */ |
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if (return_object->common.type != ACPI_TYPE_STRING) { |
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return_ACPI_STATUS(AE_OK); |
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} |
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|
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if (return_object->string.length == 0) { |
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ACPI_WARN_PREDEFINED((AE_INFO, |
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info->full_pathname, info->node_flags, |
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"Invalid zero-length _HID or _CID string")); |
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/* Return AE_OK anyway, let driver handle it */ |
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info->return_flags |= ACPI_OBJECT_REPAIRED; |
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return_ACPI_STATUS(AE_OK); |
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} |
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/* It is simplest to always create a new string object */ |
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new_string = acpi_ut_create_string_object(return_object->string.length); |
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if (!new_string) { |
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return_ACPI_STATUS(AE_NO_MEMORY); |
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} |
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/* |
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* Remove a leading asterisk if present. For some unknown reason, there |
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* are many machines in the field that contains IDs like this. |
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* |
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* Examples: "*PNP0C03", "*ACPI0003" |
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*/ |
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source = return_object->string.pointer; |
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if (*source == '*') { |
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source++; |
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new_string->string.length--; |
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ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
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"%s: Removed invalid leading asterisk\n", |
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info->full_pathname)); |
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} |
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|
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/* |
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* Copy and uppercase the string. From the ACPI 5.0 specification: |
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* |
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* A valid PNP ID must be of the form "AAA####" where A is an uppercase |
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* letter and # is a hex digit. A valid ACPI ID must be of the form |
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* "NNNN####" where N is an uppercase letter or decimal digit, and |
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* # is a hex digit. |
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*/ |
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for (dest = new_string->string.pointer; *source; dest++, source++) { |
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*dest = (char)toupper((int)*source); |
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} |
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acpi_ut_remove_reference(return_object); |
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*return_object_ptr = new_string; |
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return_ACPI_STATUS(AE_OK); |
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} |
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|
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/****************************************************************************** |
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* |
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* FUNCTION: acpi_ns_repair_PRT |
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* |
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* PARAMETERS: info - Method execution information block |
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* return_object_ptr - Pointer to the object returned from the |
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* evaluation of a method or object |
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* |
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* RETURN: Status. AE_OK if object is OK or was repaired successfully |
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* |
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* DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed |
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* source_name and source_index field, a common BIOS bug. |
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* |
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*****************************************************************************/ |
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|
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static acpi_status |
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acpi_ns_repair_PRT(struct acpi_evaluate_info *info, |
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union acpi_operand_object **return_object_ptr) |
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{ |
|
union acpi_operand_object *package_object = *return_object_ptr; |
|
union acpi_operand_object **top_object_list; |
|
union acpi_operand_object **sub_object_list; |
|
union acpi_operand_object *obj_desc; |
|
union acpi_operand_object *sub_package; |
|
u32 element_count; |
|
u32 index; |
|
|
|
/* Each element in the _PRT package is a subpackage */ |
|
|
|
top_object_list = package_object->package.elements; |
|
element_count = package_object->package.count; |
|
|
|
/* Examine each subpackage */ |
|
|
|
for (index = 0; index < element_count; index++, top_object_list++) { |
|
sub_package = *top_object_list; |
|
sub_object_list = sub_package->package.elements; |
|
|
|
/* Check for minimum required element count */ |
|
|
|
if (sub_package->package.count < 4) { |
|
continue; |
|
} |
|
|
|
/* |
|
* If the BIOS has erroneously reversed the _PRT source_name (index 2) |
|
* and the source_index (index 3), fix it. _PRT is important enough to |
|
* workaround this BIOS error. This also provides compatibility with |
|
* other ACPI implementations. |
|
*/ |
|
obj_desc = sub_object_list[3]; |
|
if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { |
|
sub_object_list[3] = sub_object_list[2]; |
|
sub_object_list[2] = obj_desc; |
|
info->return_flags |= ACPI_OBJECT_REPAIRED; |
|
|
|
ACPI_WARN_PREDEFINED((AE_INFO, |
|
info->full_pathname, |
|
info->node_flags, |
|
"PRT[%X]: Fixed reversed SourceName and SourceIndex", |
|
index)); |
|
} |
|
} |
|
|
|
return (AE_OK); |
|
} |
|
|
|
/****************************************************************************** |
|
* |
|
* FUNCTION: acpi_ns_repair_PSS |
|
* |
|
* PARAMETERS: info - Method execution information block |
|
* return_object_ptr - Pointer to the object returned from the |
|
* evaluation of a method or object |
|
* |
|
* RETURN: Status. AE_OK if object is OK or was repaired successfully |
|
* |
|
* DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list |
|
* by the CPU frequencies. Check that the power dissipation values |
|
* are all proportional to CPU frequency (i.e., sorting by |
|
* frequency should be the same as sorting by power.) |
|
* |
|
*****************************************************************************/ |
|
|
|
static acpi_status |
|
acpi_ns_repair_PSS(struct acpi_evaluate_info *info, |
|
union acpi_operand_object **return_object_ptr) |
|
{ |
|
union acpi_operand_object *return_object = *return_object_ptr; |
|
union acpi_operand_object **outer_elements; |
|
u32 outer_element_count; |
|
union acpi_operand_object **elements; |
|
union acpi_operand_object *obj_desc; |
|
u32 previous_value; |
|
acpi_status status; |
|
u32 i; |
|
|
|
/* |
|
* Entries (subpackages) in the _PSS Package must be sorted by power |
|
* dissipation, in descending order. If it appears that the list is |
|
* incorrectly sorted, sort it. We sort by cpu_frequency, since this |
|
* should be proportional to the power. |
|
*/ |
|
status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0, |
|
ACPI_SORT_DESCENDING, |
|
"CpuFrequency"); |
|
if (ACPI_FAILURE(status)) { |
|
return (status); |
|
} |
|
|
|
/* |
|
* We now know the list is correctly sorted by CPU frequency. Check if |
|
* the power dissipation values are proportional. |
|
*/ |
|
previous_value = ACPI_UINT32_MAX; |
|
outer_elements = return_object->package.elements; |
|
outer_element_count = return_object->package.count; |
|
|
|
for (i = 0; i < outer_element_count; i++) { |
|
elements = (*outer_elements)->package.elements; |
|
obj_desc = elements[1]; /* Index1 = power_dissipation */ |
|
|
|
if ((u32)obj_desc->integer.value > previous_value) { |
|
ACPI_WARN_PREDEFINED((AE_INFO, |
|
info->full_pathname, |
|
info->node_flags, |
|
"SubPackage[%u,%u] - suspicious power dissipation values", |
|
i - 1, i)); |
|
} |
|
|
|
previous_value = (u32) obj_desc->integer.value; |
|
outer_elements++; |
|
} |
|
|
|
return (AE_OK); |
|
} |
|
|
|
/****************************************************************************** |
|
* |
|
* FUNCTION: acpi_ns_repair_TSS |
|
* |
|
* PARAMETERS: info - Method execution information block |
|
* return_object_ptr - Pointer to the object returned from the |
|
* evaluation of a method or object |
|
* |
|
* RETURN: Status. AE_OK if object is OK or was repaired successfully |
|
* |
|
* DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list |
|
* descending by the power dissipation values. |
|
* |
|
*****************************************************************************/ |
|
|
|
static acpi_status |
|
acpi_ns_repair_TSS(struct acpi_evaluate_info *info, |
|
union acpi_operand_object **return_object_ptr) |
|
{ |
|
union acpi_operand_object *return_object = *return_object_ptr; |
|
acpi_status status; |
|
struct acpi_namespace_node *node; |
|
|
|
/* |
|
* We can only sort the _TSS return package if there is no _PSS in the |
|
* same scope. This is because if _PSS is present, the ACPI specification |
|
* dictates that the _TSS Power Dissipation field is to be ignored, and |
|
* therefore some BIOSs leave garbage values in the _TSS Power field(s). |
|
* In this case, it is best to just return the _TSS package as-is. |
|
* (May, 2011) |
|
*/ |
|
status = acpi_ns_get_node(info->node, "^_PSS", |
|
ACPI_NS_NO_UPSEARCH, &node); |
|
if (ACPI_SUCCESS(status)) { |
|
return (AE_OK); |
|
} |
|
|
|
status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1, |
|
ACPI_SORT_DESCENDING, |
|
"PowerDissipation"); |
|
|
|
return (status); |
|
} |
|
|
|
/****************************************************************************** |
|
* |
|
* FUNCTION: acpi_ns_check_sorted_list |
|
* |
|
* PARAMETERS: info - Method execution information block |
|
* return_object - Pointer to the top-level returned object |
|
* start_index - Index of the first subpackage |
|
* expected_count - Minimum length of each subpackage |
|
* sort_index - Subpackage entry to sort on |
|
* sort_direction - Ascending or descending |
|
* sort_key_name - Name of the sort_index field |
|
* |
|
* RETURN: Status. AE_OK if the list is valid and is sorted correctly or |
|
* has been repaired by sorting the list. |
|
* |
|
* DESCRIPTION: Check if the package list is valid and sorted correctly by the |
|
* sort_index. If not, then sort the list. |
|
* |
|
*****************************************************************************/ |
|
|
|
static acpi_status |
|
acpi_ns_check_sorted_list(struct acpi_evaluate_info *info, |
|
union acpi_operand_object *return_object, |
|
u32 start_index, |
|
u32 expected_count, |
|
u32 sort_index, |
|
u8 sort_direction, char *sort_key_name) |
|
{ |
|
u32 outer_element_count; |
|
union acpi_operand_object **outer_elements; |
|
union acpi_operand_object **elements; |
|
union acpi_operand_object *obj_desc; |
|
u32 i; |
|
u32 previous_value; |
|
|
|
ACPI_FUNCTION_NAME(ns_check_sorted_list); |
|
|
|
/* The top-level object must be a package */ |
|
|
|
if (return_object->common.type != ACPI_TYPE_PACKAGE) { |
|
return (AE_AML_OPERAND_TYPE); |
|
} |
|
|
|
/* |
|
* NOTE: assumes list of subpackages contains no NULL elements. |
|
* Any NULL elements should have been removed by earlier call |
|
* to acpi_ns_remove_null_elements. |
|
*/ |
|
outer_element_count = return_object->package.count; |
|
if (!outer_element_count || start_index >= outer_element_count) { |
|
return (AE_AML_PACKAGE_LIMIT); |
|
} |
|
|
|
outer_elements = &return_object->package.elements[start_index]; |
|
outer_element_count -= start_index; |
|
|
|
previous_value = 0; |
|
if (sort_direction == ACPI_SORT_DESCENDING) { |
|
previous_value = ACPI_UINT32_MAX; |
|
} |
|
|
|
/* Examine each subpackage */ |
|
|
|
for (i = 0; i < outer_element_count; i++) { |
|
|
|
/* Each element of the top-level package must also be a package */ |
|
|
|
if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) { |
|
return (AE_AML_OPERAND_TYPE); |
|
} |
|
|
|
/* Each subpackage must have the minimum length */ |
|
|
|
if ((*outer_elements)->package.count < expected_count) { |
|
return (AE_AML_PACKAGE_LIMIT); |
|
} |
|
|
|
elements = (*outer_elements)->package.elements; |
|
obj_desc = elements[sort_index]; |
|
|
|
if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
|
return (AE_AML_OPERAND_TYPE); |
|
} |
|
|
|
/* |
|
* The list must be sorted in the specified order. If we detect a |
|
* discrepancy, sort the entire list. |
|
*/ |
|
if (((sort_direction == ACPI_SORT_ASCENDING) && |
|
(obj_desc->integer.value < previous_value)) || |
|
((sort_direction == ACPI_SORT_DESCENDING) && |
|
(obj_desc->integer.value > previous_value))) { |
|
acpi_ns_sort_list(&return_object->package. |
|
elements[start_index], |
|
outer_element_count, sort_index, |
|
sort_direction); |
|
|
|
info->return_flags |= ACPI_OBJECT_REPAIRED; |
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, |
|
"%s: Repaired unsorted list - now sorted by %s\n", |
|
info->full_pathname, sort_key_name)); |
|
return (AE_OK); |
|
} |
|
|
|
previous_value = (u32) obj_desc->integer.value; |
|
outer_elements++; |
|
} |
|
|
|
return (AE_OK); |
|
} |
|
|
|
/****************************************************************************** |
|
* |
|
* FUNCTION: acpi_ns_sort_list |
|
* |
|
* PARAMETERS: elements - Package object element list |
|
* count - Element count for above |
|
* index - Sort by which package element |
|
* sort_direction - Ascending or Descending sort |
|
* |
|
* RETURN: None |
|
* |
|
* DESCRIPTION: Sort the objects that are in a package element list. |
|
* |
|
* NOTE: Assumes that all NULL elements have been removed from the package, |
|
* and that all elements have been verified to be of type Integer. |
|
* |
|
*****************************************************************************/ |
|
|
|
static void |
|
acpi_ns_sort_list(union acpi_operand_object **elements, |
|
u32 count, u32 index, u8 sort_direction) |
|
{ |
|
union acpi_operand_object *obj_desc1; |
|
union acpi_operand_object *obj_desc2; |
|
union acpi_operand_object *temp_obj; |
|
u32 i; |
|
u32 j; |
|
|
|
/* Simple bubble sort */ |
|
|
|
for (i = 1; i < count; i++) { |
|
for (j = (count - 1); j >= i; j--) { |
|
obj_desc1 = elements[j - 1]->package.elements[index]; |
|
obj_desc2 = elements[j]->package.elements[index]; |
|
|
|
if (((sort_direction == ACPI_SORT_ASCENDING) && |
|
(obj_desc1->integer.value > |
|
obj_desc2->integer.value)) |
|
|| ((sort_direction == ACPI_SORT_DESCENDING) |
|
&& (obj_desc1->integer.value < |
|
obj_desc2->integer.value))) { |
|
temp_obj = elements[j - 1]; |
|
elements[j - 1] = elements[j]; |
|
elements[j] = temp_obj; |
|
} |
|
} |
|
} |
|
} |
|
|
|
/****************************************************************************** |
|
* |
|
* FUNCTION: acpi_ns_remove_element |
|
* |
|
* PARAMETERS: obj_desc - Package object element list |
|
* index - Index of element to remove |
|
* |
|
* RETURN: None |
|
* |
|
* DESCRIPTION: Remove the requested element of a package and delete it. |
|
* |
|
*****************************************************************************/ |
|
|
|
static void |
|
acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index) |
|
{ |
|
union acpi_operand_object **source; |
|
union acpi_operand_object **dest; |
|
u32 count; |
|
u32 new_count; |
|
u32 i; |
|
|
|
ACPI_FUNCTION_NAME(ns_remove_element); |
|
|
|
count = obj_desc->package.count; |
|
new_count = count - 1; |
|
|
|
source = obj_desc->package.elements; |
|
dest = source; |
|
|
|
/* Examine all elements of the package object, remove matched index */ |
|
|
|
for (i = 0; i < count; i++) { |
|
if (i == index) { |
|
acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */ |
|
acpi_ut_remove_reference(*source); |
|
} else { |
|
*dest = *source; |
|
dest++; |
|
} |
|
|
|
source++; |
|
} |
|
|
|
/* NULL terminate list and update the package count */ |
|
|
|
*dest = NULL; |
|
obj_desc->package.count = new_count; |
|
}
|
|
|