drivers/platform/x86/think-lmi.h

   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 /* password configuration details */
  31 struct tlmi_pwdcfg_core {
  32         uint32_t password_mode;
  33         uint32_t password_state;
  34         uint32_t min_length;
  35         uint32_t max_length;
  36         uint32_t supported_encodings;
  37         uint32_t supported_keyboard;
  38 };
  39
  40 struct tlmi_pwdcfg_ext {
  41         uint32_t hdd_user_password;
  42         uint32_t hdd_master_password;
  43         uint32_t nvme_user_password;
  44         uint32_t nvme_master_password;
  45 };
  46
  47 struct tlmi_pwdcfg {
  48         struct tlmi_pwdcfg_core core;
  49         struct tlmi_pwdcfg_ext ext;
  50 };
  51
  52 /* password setting details */
  53 struct tlmi_pwd_setting {
  54         struct kobject kobj;
  55         bool valid;
  56         char password[TLMI_PWD_BUFSIZE];
  57         const char *pwd_type;
  58         const char *role;
  59         int minlen;
  60         int maxlen;
  61         enum encoding_option encoding;
  62         char kbdlang[TLMI_LANG_MAXLEN];
  63         int index; /*Used for HDD and NVME auth */
  64         enum level_option level;
  65         bool cert_installed;
  66         char *certificate;
  67         char *signature;
  68         char *save_signature;
  69 };
  70
  71 /* Attribute setting details */
  72 struct tlmi_attr_setting {
  73         struct kobject kobj;
  74         int index;
  75         char display_name[TLMI_SETTINGS_MAXLEN];
  76         char *possible_values;
  77 };
  78
  79 struct think_lmi {
  80         struct wmi_device *wmi_device;
  81
  82         bool can_set_bios_settings;
  83         bool can_get_bios_selections;
  84         bool can_set_bios_password;
  85         bool can_get_password_settings;
  86         bool pending_changes;
  87         bool can_debug_cmd;
  88         bool opcode_support;
  89         bool certificate_support;
  90
  91         struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT];
  92         struct device *class_dev;
  93         struct kset *attribute_kset;
  94         struct kset *authentication_kset;
  95
  96         struct tlmi_pwdcfg pwdcfg;
  97         struct tlmi_pwd_setting *pwd_admin;
  98         struct tlmi_pwd_setting *pwd_power;
  99         struct tlmi_pwd_setting *pwd_system;
 100         struct tlmi_pwd_setting *pwd_hdd;
 101         struct tlmi_pwd_setting *pwd_nvme;
 102 };
 103
 104 #endif /* !_THINK_LMI_H_ */