dmi.h

  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__ */