tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/wmi.h>
8
9#define TLMI_SETTINGS_COUNT 256
10#define TLMI_SETTINGS_MAXLEN 512
11#define TLMI_PWD_BUFSIZE 129
12#define TLMI_LANG_MAXLEN 4
13#define TLMI_INDEX_MAX 32
14
15/* Possible error values */
16struct tlmi_err_codes {
17 const char *err_str;
18 int err_code;
19};
20
21enum encoding_option {
22 TLMI_ENCODING_ASCII,
23 TLMI_ENCODING_SCANCODE,
24};
25
26enum level_option {
27 TLMI_LEVEL_USER,
28 TLMI_LEVEL_MASTER,
29};
30
31/*
32 * There are a limit on the number of WMI operations you can do if you use
33 * the default implementation of saving on every set. This is due to a
34 * limitation in EFI variable space used.
35 * Have a 'bulk save' mode where you can manually trigger the save, and can
36 * therefore set unlimited variables - for users that need it.
37 */
38enum save_mode {
39 TLMI_SAVE_SINGLE,
40 TLMI_SAVE_BULK,
41 TLMI_SAVE_SAVE,
42};
43
44/* password configuration details */
45#define TLMI_PWDCFG_MODE_LEGACY 0
46#define TLMI_PWDCFG_MODE_PASSWORD 1
47#define TLMI_PWDCFG_MODE_MULTICERT 3
48
49struct tlmi_pwdcfg_core {
50 uint32_t password_mode;
51 uint32_t password_state;
52 uint32_t min_length;
53 uint32_t max_length;
54 uint32_t supported_encodings;
55 uint32_t supported_keyboard;
56};
57
58struct tlmi_pwdcfg_ext {
59 uint32_t hdd_user_password;
60 uint32_t hdd_master_password;
61 uint32_t nvme_user_password;
62 uint32_t nvme_master_password;
63};
64
65struct tlmi_pwdcfg {
66 struct tlmi_pwdcfg_core core;
67 struct tlmi_pwdcfg_ext ext;
68};
69
70/* password setting details */
71struct tlmi_pwd_setting {
72 struct kobject kobj;
73 bool pwd_enabled;
74 char password[TLMI_PWD_BUFSIZE];
75 const char *pwd_type;
76 const char *role;
77 int minlen;
78 int maxlen;
79 enum encoding_option encoding;
80 char kbdlang[TLMI_LANG_MAXLEN];
81 int index; /*Used for HDD and NVME auth */
82 enum level_option level;
83 bool cert_installed;
84 char *signature;
85 char *save_signature;
86};
87
88/* Attribute setting details */
89struct tlmi_attr_setting {
90 struct kobject kobj;
91 struct wmi_device *wdev;
92 int index;
93 char name[TLMI_SETTINGS_MAXLEN];
94 char display_name[TLMI_SETTINGS_MAXLEN];
95 char *possible_values;
96};
97
98struct think_lmi {
99 struct wmi_device *wmi_device;
100
101 bool can_set_bios_settings;
102 bool can_get_bios_selections;
103 bool can_set_bios_password;
104 bool can_get_password_settings;
105 bool pending_changes;
106 bool can_debug_cmd;
107 bool opcode_support;
108 bool certificate_support;
109 enum save_mode save_mode;
110 bool save_required;
111 bool reboot_required;
112
113 struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT];
114 struct device *class_dev;
115 struct kset *attribute_kset;
116 struct kset *authentication_kset;
117
118 struct tlmi_pwdcfg pwdcfg;
119 struct tlmi_pwd_setting *pwd_admin;
120 struct tlmi_pwd_setting *pwd_power;
121 struct tlmi_pwd_setting *pwd_system;
122 struct tlmi_pwd_setting *pwd_hdd;
123 struct tlmi_pwd_setting *pwd_nvme;
124};
125
126#endif /* !_THINK_LMI_H_ */