1
2
3
4
5
6
7#ifndef _DELL_WMI_BIOS_ATTR_H_
8#define _DELL_WMI_BIOS_ATTR_H_
9
10#include <linux/wmi.h>
11#include <linux/device.h>
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/capability.h>
15
16#define DRIVER_NAME "dell-wmi-sysman"
17#define MAX_BUFF 512
18
19#define DELL_WMI_BIOS_ENUMERATION_ATTRIBUTE_GUID "F1DDEE52-063C-4784-A11E-8A06684B9BF5"
20#define DELL_WMI_BIOS_INTEGER_ATTRIBUTE_GUID "F1DDEE52-063C-4784-A11E-8A06684B9BFA"
21#define DELL_WMI_BIOS_STRING_ATTRIBUTE_GUID "F1DDEE52-063C-4784-A11E-8A06684B9BF9"
22#define DELL_WMI_BIOS_PASSOBJ_ATTRIBUTE_GUID "0894B8D6-44A6-4719-97D7-6AD24108BFD4"
23#define DELL_WMI_BIOS_ATTRIBUTES_INTERFACE_GUID "F1DDEE52-063C-4784-A11E-8A06684B9BF4"
24#define DELL_WMI_BIOS_PASSWORD_INTERFACE_GUID "70FE8229-D03B-4214-A1C6-1F884B1A892A"
25
26struct enumeration_data {
27 struct kobject *attr_name_kobj;
28 char display_name_language_code[MAX_BUFF];
29 char dell_value_modifier[MAX_BUFF];
30 char possible_values[MAX_BUFF];
31 char attribute_name[MAX_BUFF];
32 char default_value[MAX_BUFF];
33 char dell_modifier[MAX_BUFF];
34 char display_name[MAX_BUFF];
35};
36
37struct integer_data {
38 struct kobject *attr_name_kobj;
39 char display_name_language_code[MAX_BUFF];
40 char attribute_name[MAX_BUFF];
41 char dell_modifier[MAX_BUFF];
42 char display_name[MAX_BUFF];
43 int scalar_increment;
44 int default_value;
45 int min_value;
46 int max_value;
47};
48
49struct str_data {
50 struct kobject *attr_name_kobj;
51 char display_name_language_code[MAX_BUFF];
52 char attribute_name[MAX_BUFF];
53 char display_name[MAX_BUFF];
54 char default_value[MAX_BUFF];
55 char dell_modifier[MAX_BUFF];
56 int min_length;
57 int max_length;
58};
59
60struct po_data {
61 struct kobject *attr_name_kobj;
62 char attribute_name[MAX_BUFF];
63 int min_password_length;
64 int max_password_length;
65};
66
67struct wmi_sysman_priv {
68 char current_admin_password[MAX_BUFF];
69 char current_system_password[MAX_BUFF];
70 struct wmi_device *password_attr_wdev;
71 struct wmi_device *bios_attr_wdev;
72 struct kset *authentication_dir_kset;
73 struct kset *main_dir_kset;
74 struct device *class_dev;
75 struct enumeration_data *enumeration_data;
76 int enumeration_instances_count;
77 struct integer_data *integer_data;
78 int integer_instances_count;
79 struct str_data *str_data;
80 int str_instances_count;
81 struct po_data *po_data;
82 int po_instances_count;
83 bool pending_changes;
84 struct mutex mutex;
85};
86
87
88extern struct wmi_sysman_priv wmi_priv;
89
90enum { ENUM, INT, STR, PO };
91
92enum {
93 ATTR_NAME,
94 DISPL_NAME_LANG_CODE,
95 DISPLAY_NAME,
96 DEFAULT_VAL,
97 CURRENT_VAL,
98 MODIFIER
99};
100
101#define get_instance_id(type) \
102static int get_##type##_instance_id(struct kobject *kobj) \
103{ \
104 int i; \
105 for (i = 0; i <= wmi_priv.type##_instances_count; i++) { \
106 if (!(strcmp(kobj->name, wmi_priv.type##_data[i].attribute_name)))\
107 return i; \
108 } \
109 return -EIO; \
110}
111
112#define attribute_s_property_show(name, type) \
113static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
114 char *buf) \
115{ \
116 int i = get_##type##_instance_id(kobj); \
117 if (i >= 0) \
118 return sprintf(buf, "%s\n", wmi_priv.type##_data[i].name); \
119 return 0; \
120}
121
122#define attribute_n_property_show(name, type) \
123static ssize_t name##_show(struct kobject *kobj, struct kobj_attribute *attr, \
124 char *buf) \
125{ \
126 int i = get_##type##_instance_id(kobj); \
127 if (i >= 0) \
128 return sprintf(buf, "%d\n", wmi_priv.type##_data[i].name); \
129 return 0; \
130}
131
132#define attribute_property_store(curr_val, type) \
133static ssize_t curr_val##_store(struct kobject *kobj, \
134 struct kobj_attribute *attr, \
135 const char *buf, size_t count) \
136{ \
137 char *p, *buf_cp; \
138 int i, ret = -EIO; \
139 buf_cp = kstrdup(buf, GFP_KERNEL); \
140 if (!buf_cp) \
141 return -ENOMEM; \
142 p = memchr(buf_cp, '\n', count); \
143 \
144 if (p != NULL) \
145 *p = '\0'; \
146 i = get_##type##_instance_id(kobj); \
147 if (i >= 0) \
148 ret = validate_##type##_input(i, buf_cp); \
149 if (!ret) \
150 ret = set_attribute(kobj->name, buf_cp); \
151 kfree(buf_cp); \
152 return ret ? ret : count; \
153}
154
155#define check_property_type(attr, prop, valuetype) \
156 (attr##_obj[prop].type != valuetype)
157
158union acpi_object *get_wmiobj_pointer(int instance_id, const char *guid_string);
159int get_instance_count(const char *guid_string);
160void strlcpy_attr(char *dest, char *src);
161
162int populate_enum_data(union acpi_object *enumeration_obj, int instance_id,
163 struct kobject *attr_name_kobj, u32 enum_property_count);
164int alloc_enum_data(void);
165void exit_enum_attributes(void);
166
167int populate_int_data(union acpi_object *integer_obj, int instance_id,
168 struct kobject *attr_name_kobj);
169int alloc_int_data(void);
170void exit_int_attributes(void);
171
172int populate_str_data(union acpi_object *str_obj, int instance_id, struct kobject *attr_name_kobj);
173int alloc_str_data(void);
174void exit_str_attributes(void);
175
176int populate_po_data(union acpi_object *po_obj, int instance_id, struct kobject *attr_name_kobj);
177int alloc_po_data(void);
178void exit_po_attributes(void);
179
180int set_attribute(const char *a_name, const char *a_value);
181int set_bios_defaults(u8 defType);
182
183void exit_bios_attr_set_interface(void);
184int init_bios_attr_set_interface(void);
185int map_wmi_error(int error_code);
186size_t calculate_string_buffer(const char *str);
187size_t calculate_security_buffer(char *authentication);
188void populate_security_buffer(char *buffer, char *authentication);
189ssize_t populate_string_buffer(char *buffer, size_t buffer_len, const char *str);
190int set_new_password(const char *password_type, const char *new);
191int init_bios_attr_pass_interface(void);
192void exit_bios_attr_pass_interface(void);
193
194#endif
195