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 *signature;
67 	char *save_signature;
68 };
69 
70 /* Attribute setting details */
71 struct tlmi_attr_setting {
72 	struct kobject kobj;
73 	int index;
74 	char display_name[TLMI_SETTINGS_MAXLEN];
75 	char *possible_values;
76 };
77 
78 struct 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