// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: nsrepair2 - Repair for objects returned by specific * predefined methods * * Copyright (C) 2000 - 2023, Intel Corp. * *****************************************************************************/ #include <acpi/acpi.h> #include "accommon.h" #include "acnamesp.h" #define _COMPONENT … ACPI_MODULE_NAME("nsrepair2") /* * Information structure and handler for ACPI predefined names that can * be repaired on a per-name basis. */ acpi_repair_function; acpi_repair_info; /* Local prototypes */ static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct acpi_namespace_node *node); static acpi_status acpi_ns_repair_ALR(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status acpi_ns_repair_CID(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status acpi_ns_repair_CST(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status acpi_ns_repair_FDE(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status acpi_ns_repair_HID(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status acpi_ns_repair_PRT(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status acpi_ns_repair_PSS(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); static acpi_status acpi_ns_repair_TSS(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr); 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); /* Values for sort_direction above */ #define ACPI_SORT_ASCENDING … #define ACPI_SORT_DESCENDING … static void acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index); static void acpi_ns_sort_list(union acpi_operand_object **elements, u32 count, u32 index, u8 sort_direction); /* * This table contains the names of the predefined methods for which we can * perform more complex repairs. * * As necessary: * * _ALR: Sort the list ascending by ambient_illuminance * _CID: Strings: uppercase all, remove any leading asterisk * _CST: Sort the list ascending by C state type * _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs * _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs * _HID: Strings: uppercase all, remove any leading asterisk * _PRT: Fix reversed source_name and source_index * _PSS: Sort the list descending by Power * _TSS: Sort the list descending by Power * * Names that must be packages, but cannot be sorted: * * _BCL: Values are tied to the Package index where they appear, and cannot * be moved or sorted. These index values are used for _BQC and _BCM. * However, we can fix the case where a buffer is returned, by converting * it to a Package of integers. */ static const struct acpi_repair_info acpi_ns_repairable_names[] = …; #define ACPI_FDE_FIELD_COUNT … #define ACPI_FDE_BYTE_BUFFER_SIZE … #define ACPI_FDE_DWORD_BUFFER_SIZE … /****************************************************************************** * * FUNCTION: acpi_ns_complex_repairs * * PARAMETERS: info - Method execution information block * node - Namespace node for the method/object * validate_status - Original status of earlier validation * return_object_ptr - Pointer to the object returned from the * evaluation of a method or object * * RETURN: Status. AE_OK if repair was successful. If name is not * matched, validate_status is returned. * * DESCRIPTION: Attempt to repair/convert a return object of a type that was * not expected. * *****************************************************************************/ acpi_status acpi_ns_complex_repairs(struct acpi_evaluate_info *info, struct acpi_namespace_node *node, acpi_status validate_status, union acpi_operand_object **return_object_ptr) { … } /****************************************************************************** * * FUNCTION: acpi_ns_match_complex_repair * * PARAMETERS: node - Namespace node for the method/object * * RETURN: Pointer to entry in repair table. NULL indicates not found. * * DESCRIPTION: Check an object name against the repairable object list. * *****************************************************************************/ static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct acpi_namespace_node *node) { … } /****************************************************************************** * * FUNCTION: acpi_ns_repair_ALR * * 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 _ALR object. If necessary, sort the object list * ascending by the ambient illuminance values. * *****************************************************************************/ static acpi_status acpi_ns_repair_ALR(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr) { … } /****************************************************************************** * * FUNCTION: acpi_ns_repair_FDE * * 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 _FDE and _GTM objects. The expected return * value is a Buffer of 5 DWORDs. This function repairs a common * problem where the return value is a Buffer of BYTEs, not * DWORDs. * *****************************************************************************/ static acpi_status acpi_ns_repair_FDE(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr) { … } /****************************************************************************** * * FUNCTION: acpi_ns_repair_CID * * 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 _CID object. If a string, ensure that all * letters are uppercase and that there is no leading asterisk. * If a Package, ensure same for all string elements. * *****************************************************************************/ static acpi_status acpi_ns_repair_CID(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr) { … } /****************************************************************************** * * FUNCTION: acpi_ns_repair_CST * * 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 _CST object: * 1. Sort the list ascending by C state type * 2. Ensure type cannot be zero * 3. A subpackage count of zero means _CST is meaningless * 4. Count must match the number of C state subpackages * *****************************************************************************/ static acpi_status acpi_ns_repair_CST(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr) { … } /****************************************************************************** * * FUNCTION: acpi_ns_repair_HID * * 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 _HID object. If a string, ensure that all * letters are uppercase and that there is no leading asterisk. * *****************************************************************************/ static acpi_status acpi_ns_repair_HID(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr) { … } /****************************************************************************** * * FUNCTION: acpi_ns_repair_PRT * * 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 _PRT object. If necessary, fix reversed * source_name and source_index field, a common BIOS bug. * *****************************************************************************/ static acpi_status acpi_ns_repair_PRT(struct acpi_evaluate_info *info, union acpi_operand_object **return_object_ptr) { … } /****************************************************************************** * * 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) { … } /****************************************************************************** * * 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) { … } /****************************************************************************** * * 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) { … } /****************************************************************************** * * 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) { … } /****************************************************************************** * * 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) { … }
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