platform/x86/think-lmi.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002
0003 #ifndef _THINK_LMI_H_
0004 #define _THINK_LMI_H_
0005
0006 #include <linux/types.h>
0007
0008 #define TLMI_SETTINGS_COUNT  256
0009 #define TLMI_SETTINGS_MAXLEN 512
0010 #define TLMI_PWD_BUFSIZE     129
0011 #define TLMI_LANG_MAXLEN       4
0012 #define TLMI_INDEX_MAX        32
0013
0014 /* Possible error values */
0015 struct tlmi_err_codes {
0016     const char *err_str;
0017     int err_code;
0018 };
0019
0020 enum encoding_option {
0021     TLMI_ENCODING_ASCII,
0022     TLMI_ENCODING_SCANCODE,
0023 };
0024
0025 enum level_option {
0026     TLMI_LEVEL_USER,
0027     TLMI_LEVEL_MASTER,
0028 };
0029
0030 /* password configuration details */
0031 struct tlmi_pwdcfg_core {
0032     uint32_t password_mode;
0033     uint32_t password_state;
0034     uint32_t min_length;
0035     uint32_t max_length;
0036     uint32_t supported_encodings;
0037     uint32_t supported_keyboard;
0038 };
0039
0040 struct tlmi_pwdcfg_ext {
0041     uint32_t hdd_user_password;
0042     uint32_t hdd_master_password;
0043     uint32_t nvme_user_password;
0044     uint32_t nvme_master_password;
0045 };
0046
0047 struct tlmi_pwdcfg {
0048     struct tlmi_pwdcfg_core core;
0049     struct tlmi_pwdcfg_ext ext;
0050 };
0051
0052 /* password setting details */
0053 struct tlmi_pwd_setting {
0054     struct kobject kobj;
0055     bool valid;
0056     char password[TLMI_PWD_BUFSIZE];
0057     const char *pwd_type;
0058     const char *role;
0059     int minlen;
0060     int maxlen;
0061     enum encoding_option encoding;
0062     char kbdlang[TLMI_LANG_MAXLEN];
0063     int index; /*Used for HDD and NVME auth */
0064     enum level_option level;
0065     bool cert_installed;
0066     char *signature;
0067     char *save_signature;
0068 };
0069
0070 /* Attribute setting details */
0071 struct tlmi_attr_setting {
0072     struct kobject kobj;
0073     int index;
0074     char display_name[TLMI_SETTINGS_MAXLEN];
0075     char *possible_values;
0076 };
0077
0078 struct think_lmi {
0079     struct wmi_device *wmi_device;
0080
0081     bool can_set_bios_settings;
0082     bool can_get_bios_selections;
0083     bool can_set_bios_password;
0084     bool can_get_password_settings;
0085     bool pending_changes;
0086     bool can_debug_cmd;
0087     bool opcode_support;
0088     bool certificate_support;
0089
0090     struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT];
0091     struct device *class_dev;
0092     struct kset *attribute_kset;
0093     struct kset *authentication_kset;
0094
0095     struct tlmi_pwdcfg pwdcfg;
0096     struct tlmi_pwd_setting *pwd_admin;
0097     struct tlmi_pwd_setting *pwd_power;
0098     struct tlmi_pwd_setting *pwd_system;
0099     struct tlmi_pwd_setting *pwd_hdd;
0100     struct tlmi_pwd_setting *pwd_nvme;
0101 };
0102
0103 #endif /* !_THINK_LMI_H_ */