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_setup(void);
106extern bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp);
107extern int dmi_get_bios_year(void);
108extern int dmi_name_in_vendors(const char *str);
109extern int dmi_name_in_serial(const char *str);
110extern int dmi_available;
111extern int dmi_walk(void (*decode)(const struct dmi_header *, void *),
112	void *private_data);
113extern bool dmi_match(enum dmi_field f, const char *str);
114extern void dmi_memdev_name(u16 handle, const char **bank, const char **device);
115extern u64 dmi_memdev_size(u16 handle);
116extern u8 dmi_memdev_type(u16 handle);
117extern u16 dmi_memdev_handle(int slot);
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_setup(void) { }
126static inline bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp)
127{
128	if (yearp)
129		*yearp = 0;
130	if (monthp)
131		*monthp = 0;
132	if (dayp)
133		*dayp = 0;
134	return false;
135}
136static inline int dmi_get_bios_year(void) { return -ENXIO; }
137static inline int dmi_name_in_vendors(const char *s) { return 0; }
138static inline int dmi_name_in_serial(const char *s) { return 0; }
139#define dmi_available 0
140static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
141	void *private_data) { return -ENXIO; }
142static inline bool dmi_match(enum dmi_field f, const char *str)
143	{ return false; }
144static inline void dmi_memdev_name(u16 handle, const char **bank,
145		const char **device) { }
146static inline u64 dmi_memdev_size(u16 handle) { return ~0ul; }
147static inline u8 dmi_memdev_type(u16 handle) { return 0x0; }
148static inline u16 dmi_memdev_handle(int slot) { return 0xffff; }
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