1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 3 #ifndef _THINK_LMI_H_ 4 #define _THINK_LMI_H_ 5 6 #include <linux/types.h> 7 8 #define TLMI_SETTINGS_COUNT 256 9 #define TLMI_SETTINGS_MAXLEN 512 10 #define TLMI_PWD_BUFSIZE 129 11 #define TLMI_LANG_MAXLEN 4 12 #define TLMI_INDEX_MAX 32 13 14 /* Possible error values */ 15 struct tlmi_err_codes { 16 const char *err_str; 17 int err_code; 18 }; 19 20 enum encoding_option { 21 TLMI_ENCODING_ASCII, 22 TLMI_ENCODING_SCANCODE, 23 }; 24 25 enum level_option { 26 TLMI_LEVEL_USER, 27 TLMI_LEVEL_MASTER, 28 }; 29 30 /* 31 * There are a limit on the number of WMI operations you can do if you use 32 * the default implementation of saving on every set. This is due to a 33 * limitation in EFI variable space used. 34 * Have a 'bulk save' mode where you can manually trigger the save, and can 35 * therefore set unlimited variables - for users that need it. 36 */ 37 enum save_mode { 38 TLMI_SAVE_SINGLE, 39 TLMI_SAVE_BULK, 40 TLMI_SAVE_SAVE, 41 }; 42 43 /* password configuration details */ 44 struct tlmi_pwdcfg_core { 45 uint32_t password_mode; 46 uint32_t password_state; 47 uint32_t min_length; 48 uint32_t max_length; 49 uint32_t supported_encodings; 50 uint32_t supported_keyboard; 51 }; 52 53 struct tlmi_pwdcfg_ext { 54 uint32_t hdd_user_password; 55 uint32_t hdd_master_password; 56 uint32_t nvme_user_password; 57 uint32_t nvme_master_password; 58 }; 59 60 struct tlmi_pwdcfg { 61 struct tlmi_pwdcfg_core core; 62 struct tlmi_pwdcfg_ext ext; 63 }; 64 65 /* password setting details */ 66 struct tlmi_pwd_setting { 67 struct kobject kobj; 68 bool valid; 69 char password[TLMI_PWD_BUFSIZE]; 70 const char *pwd_type; 71 const char *role; 72 int minlen; 73 int maxlen; 74 enum encoding_option encoding; 75 char kbdlang[TLMI_LANG_MAXLEN]; 76 int index; /*Used for HDD and NVME auth */ 77 enum level_option level; 78 bool cert_installed; 79 char *signature; 80 char *save_signature; 81 }; 82 83 /* Attribute setting details */ 84 struct tlmi_attr_setting { 85 struct kobject kobj; 86 int index; 87 char name[TLMI_SETTINGS_MAXLEN]; 88 char display_name[TLMI_SETTINGS_MAXLEN]; 89 char *possible_values; 90 }; 91 92 struct think_lmi { 93 struct wmi_device *wmi_device; 94 95 bool can_set_bios_settings; 96 bool can_get_bios_selections; 97 bool can_set_bios_password; 98 bool can_get_password_settings; 99 bool pending_changes; 100 bool can_debug_cmd; 101 bool opcode_support; 102 bool certificate_support; 103 enum save_mode save_mode; 104 bool save_required; 105 bool reboot_required; 106 107 struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT]; 108 struct device *class_dev; 109 struct kset *attribute_kset; 110 struct kset *authentication_kset; 111 112 struct tlmi_pwdcfg pwdcfg; 113 struct tlmi_pwd_setting *pwd_admin; 114 struct tlmi_pwd_setting *pwd_power; 115 struct tlmi_pwd_setting *pwd_system; 116 struct tlmi_pwd_setting *pwd_hdd; 117 struct tlmi_pwd_setting *pwd_nvme; 118 }; 119 120 #endif /* !_THINK_LMI_H_ */ 121