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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __DMI_H__
3#define __DMI_H__
4
5#include <linux/list.h>
6#include <linux/kobject.h>
7#include <linux/device-id/dmi.h>
8
9/* enum dmi_field is in mod_devicetable.h */
10
11enum dmi_device_type {
12 DMI_DEV_TYPE_ANY = 0,
13 DMI_DEV_TYPE_OTHER,
14 DMI_DEV_TYPE_UNKNOWN,
15 DMI_DEV_TYPE_VIDEO,
16 DMI_DEV_TYPE_SCSI,
17 DMI_DEV_TYPE_ETHERNET,
18 DMI_DEV_TYPE_TOKENRING,
19 DMI_DEV_TYPE_SOUND,
20 DMI_DEV_TYPE_PATA,
21 DMI_DEV_TYPE_SATA,
22 DMI_DEV_TYPE_SAS,
23 DMI_DEV_TYPE_IPMI = -1,
24 DMI_DEV_TYPE_OEM_STRING = -2,
25 DMI_DEV_TYPE_DEV_ONBOARD = -3,
26 DMI_DEV_TYPE_DEV_SLOT = -4,
27};
28
29enum dmi_entry_type {
30 DMI_ENTRY_BIOS = 0,
31 DMI_ENTRY_SYSTEM,
32 DMI_ENTRY_BASEBOARD,
33 DMI_ENTRY_CHASSIS,
34 DMI_ENTRY_PROCESSOR,
35 DMI_ENTRY_MEM_CONTROLLER,
36 DMI_ENTRY_MEM_MODULE,
37 DMI_ENTRY_CACHE,
38 DMI_ENTRY_PORT_CONNECTOR,
39 DMI_ENTRY_SYSTEM_SLOT,
40 DMI_ENTRY_ONBOARD_DEVICE,
41 DMI_ENTRY_OEMSTRINGS,
42 DMI_ENTRY_SYSCONF,
43 DMI_ENTRY_BIOS_LANG,
44 DMI_ENTRY_GROUP_ASSOC,
45 DMI_ENTRY_SYSTEM_EVENT_LOG,
46 DMI_ENTRY_PHYS_MEM_ARRAY,
47 DMI_ENTRY_MEM_DEVICE,
48 DMI_ENTRY_32_MEM_ERROR,
49 DMI_ENTRY_MEM_ARRAY_MAPPED_ADDR,
50 DMI_ENTRY_MEM_DEV_MAPPED_ADDR,
51 DMI_ENTRY_BUILTIN_POINTING_DEV,
52 DMI_ENTRY_PORTABLE_BATTERY,
53 DMI_ENTRY_SYSTEM_RESET,
54 DMI_ENTRY_HW_SECURITY,
55 DMI_ENTRY_SYSTEM_POWER_CONTROLS,
56 DMI_ENTRY_VOLTAGE_PROBE,
57 DMI_ENTRY_COOLING_DEV,
58 DMI_ENTRY_TEMP_PROBE,
59 DMI_ENTRY_ELECTRICAL_CURRENT_PROBE,
60 DMI_ENTRY_OOB_REMOTE_ACCESS,
61 DMI_ENTRY_BIS_ENTRY,
62 DMI_ENTRY_SYSTEM_BOOT,
63 DMI_ENTRY_64_MEM_ERROR,
64 DMI_ENTRY_MGMT_DEV,
65 DMI_ENTRY_MGMT_DEV_COMPONENT,
66 DMI_ENTRY_MGMT_DEV_THRES,
67 DMI_ENTRY_MEM_CHANNEL,
68 DMI_ENTRY_IPMI_DEV,
69 DMI_ENTRY_SYS_POWER_SUPPLY,
70 DMI_ENTRY_ADDITIONAL,
71 DMI_ENTRY_ONBOARD_DEV_EXT,
72 DMI_ENTRY_MGMT_CONTROLLER_HOST,
73 DMI_ENTRY_TPM_DEVICE,
74 DMI_ENTRY_PROCESSOR_ADDITIONAL,
75 DMI_ENTRY_FIRMWARE_INVENTORY,
76 DMI_ENTRY_STRING_PROPERTY,
77 DMI_ENTRY_INACTIVE = 126,
78 DMI_ENTRY_END_OF_TABLE = 127,
79};
80
81struct dmi_header {
82 u8 type;
83 u8 length;
84 u16 handle;
85} __packed;
86
87struct dmi_device {
88 struct list_head list;
89 int type;
90 const char *name;
91 void *device_data; /* Type specific data */
92};
93
94#define DMI_A_INFO_ENT_MIN_SIZE 0x6
95struct dmi_a_info_entry {
96 u8 length;
97 u16 handle;
98 u8 offset;
99 u8 str_num;
100 u8 value[];
101} __packed;
102
103#define DMI_A_INFO_MIN_SIZE 0xB
104struct dmi_a_info {
105 struct dmi_header header;
106 u8 count;
107} __packed;
108
109#ifdef CONFIG_DMI
110
111struct dmi_dev_onboard {
112 struct dmi_device dev;
113 int instance;
114 int segment;
115 int bus;
116 int devfn;
117};
118
119extern struct kobject *dmi_kobj;
120extern int dmi_check_system(const struct dmi_system_id *list);
121const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list);
122extern const char * dmi_get_system_info(int field);
123extern const struct dmi_device * dmi_find_device(int type, const char *name,
124 const struct dmi_device *from);
125extern void dmi_setup(void);
126extern bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp);
127extern int dmi_get_bios_year(void);
128extern int dmi_name_in_vendors(const char *str);
129extern int dmi_name_in_serial(const char *str);
130extern int dmi_available;
131extern int dmi_walk(void (*decode)(const struct dmi_header *, void *),
132 void *private_data);
133extern bool dmi_match(enum dmi_field f, const char *str);
134extern void dmi_memdev_name(u16 handle, const char **bank, const char **device);
135extern u64 dmi_memdev_size(u16 handle);
136extern u8 dmi_memdev_type(u16 handle);
137extern u16 dmi_memdev_handle(int slot);
138const char *dmi_string_nosave(const struct dmi_header *dm, u8 s);
139
140#else
141
142static inline int dmi_check_system(const struct dmi_system_id *list) { return 0; }
143static inline const char * dmi_get_system_info(int field) { return NULL; }
144static inline const struct dmi_device * dmi_find_device(int type, const char *name,
145 const struct dmi_device *from) { return NULL; }
146static inline void dmi_setup(void) { }
147static inline bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp)
148{
149 if (yearp)
150 *yearp = 0;
151 if (monthp)
152 *monthp = 0;
153 if (dayp)
154 *dayp = 0;
155 return false;
156}
157static inline int dmi_get_bios_year(void) { return -ENXIO; }
158static inline int dmi_name_in_vendors(const char *s) { return 0; }
159static inline int dmi_name_in_serial(const char *s) { return 0; }
160#define dmi_available 0
161static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
162 void *private_data) { return -ENXIO; }
163static inline bool dmi_match(enum dmi_field f, const char *str)
164 { return false; }
165static inline void dmi_memdev_name(u16 handle, const char **bank,
166 const char **device) { }
167static inline u64 dmi_memdev_size(u16 handle) { return ~0ul; }
168static inline u8 dmi_memdev_type(u16 handle) { return 0x0; }
169static inline u16 dmi_memdev_handle(int slot) { return 0xffff; }
170static inline const struct dmi_system_id *
171 dmi_first_match(const struct dmi_system_id *list) { return NULL; }
172static inline const char *
173 dmi_string_nosave(const struct dmi_header *dm, u8 s) { return ""; }
174
175#endif
176
177#endif /* __DMI_H__ */