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 */
15struct tlmi_err_codes {
16	const char *err_str;
17	int err_code;
18};
19
20enum encoding_option {
21	TLMI_ENCODING_ASCII,
22	TLMI_ENCODING_SCANCODE,
23};
24
25enum level_option {
26	TLMI_LEVEL_USER,
27	TLMI_LEVEL_MASTER,
28};
29
30/* password configuration details */
31struct 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
40struct 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
47struct tlmi_pwdcfg {
48	struct tlmi_pwdcfg_core core;
49	struct tlmi_pwdcfg_ext ext;
50};
51
52/* password setting details */
53struct 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 *signature;
67	char *save_signature;
68};
69
70/* Attribute setting details */
71struct tlmi_attr_setting {
72	struct kobject kobj;
73	int index;
74	char display_name[TLMI_SETTINGS_MAXLEN];
75	char *possible_values;
76};
77
78struct think_lmi {
79	struct wmi_device *wmi_device;
80
81	bool can_set_bios_settings;
82	bool can_get_bios_selections;
83	bool can_set_bios_password;
84	bool can_get_password_settings;
85	bool pending_changes;
86	bool can_debug_cmd;
87	bool opcode_support;
88	bool certificate_support;
89
90	struct tlmi_attr_setting *setting[TLMI_SETTINGS_COUNT];
91	struct device *class_dev;
92	struct kset *attribute_kset;
93	struct kset *authentication_kset;
94
95	struct tlmi_pwdcfg pwdcfg;
96	struct tlmi_pwd_setting *pwd_admin;
97	struct tlmi_pwd_setting *pwd_power;
98	struct tlmi_pwd_setting *pwd_system;
99	struct tlmi_pwd_setting *pwd_hdd;
100	struct tlmi_pwd_setting *pwd_nvme;
101};
102
103#endif /* !_THINK_LMI_H_ */
104