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/mod_devicetable.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_MGMT_DEV,
64 DMI_ENTRY_MGMT_DEV_COMPONENT,
65 DMI_ENTRY_MGMT_DEV_THRES,
66 DMI_ENTRY_MEM_CHANNEL,
67 DMI_ENTRY_IPMI_DEV,
68 DMI_ENTRY_SYS_POWER_SUPPLY,
69 DMI_ENTRY_ADDITIONAL,
70 DMI_ENTRY_ONBOARD_DEV_EXT,
71 DMI_ENTRY_MGMT_CONTROLLER_HOST,
72 DMI_ENTRY_INACTIVE = 126,
73 DMI_ENTRY_END_OF_TABLE = 127,
74};
75
76struct dmi_header {
77 u8 type;
78 u8 length;
79 u16 handle;
80} __packed;
81
82struct dmi_device {
83 struct list_head list;
84 int type;
85 const char *name;
86 void *device_data; /* Type specific data */
87};
88
89#ifdef CONFIG_DMI
90
91struct dmi_dev_onboard {
92 struct dmi_device dev;
93 int instance;
94 int segment;
95 int bus;
96 int devfn;
97};
98
99extern struct kobject *dmi_kobj;
100extern int dmi_check_system(const struct dmi_system_id *list);
101const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list);
102extern const char * dmi_get_system_info(int field);
103extern const struct dmi_device * dmi_find_device(int type, const char *name,
104 const struct dmi_device *from);
105extern void dmi_scan_machine(void);
106extern void dmi_memdev_walk(void);
107extern void dmi_set_dump_stack_arch_desc(void);
108extern bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp);
109extern int dmi_get_bios_year(void);
110extern int dmi_name_in_vendors(const char *str);
111extern int dmi_name_in_serial(const char *str);
112extern int dmi_available;
113extern int dmi_walk(void (*decode)(const struct dmi_header *, void *),
114 void *private_data);
115extern bool dmi_match(enum dmi_field f, const char *str);
116extern void dmi_memdev_name(u16 handle, const char **bank, const char **device);
117extern u64 dmi_memdev_size(u16 handle);
118
119#else
120
121static inline int dmi_check_system(const struct dmi_system_id *list) { return 0; }
122static inline const char * dmi_get_system_info(int field) { return NULL; }
123static inline const struct dmi_device * dmi_find_device(int type, const char *name,
124 const struct dmi_device *from) { return NULL; }
125static inline void dmi_scan_machine(void) { return; }
126static inline void dmi_memdev_walk(void) { }
127static inline void dmi_set_dump_stack_arch_desc(void) { }
128static inline bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp)
129{
130 if (yearp)
131 *yearp = 0;
132 if (monthp)
133 *monthp = 0;
134 if (dayp)
135 *dayp = 0;
136 return false;
137}
138static inline int dmi_get_bios_year(void) { return -ENXIO; }
139static inline int dmi_name_in_vendors(const char *s) { return 0; }
140static inline int dmi_name_in_serial(const char *s) { return 0; }
141#define dmi_available 0
142static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
143 void *private_data) { return -ENXIO; }
144static inline bool dmi_match(enum dmi_field f, const char *str)
145 { return false; }
146static inline void dmi_memdev_name(u16 handle, const char **bank,
147 const char **device) { }
148static inline u64 dmi_memdev_size(u16 handle) { return ~0ul; }
149static inline const struct dmi_system_id *
150 dmi_first_match(const struct dmi_system_id *list) { return NULL; }
151
152#endif
153
154#endif /* __DMI_H__ */
155