include/linux/dmi.h

Source file repositories/reference/linux-study-clean/include/linux/dmi.h

File Facts

System
Linux kernel
Corpus path
include/linux/dmi.h
Extension
.h
Size
4915 bytes
Lines
178
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct dmi_header {
	u8 type;
	u8 length;
	u16 handle;
} __packed;

struct dmi_device {
	struct list_head list;
	int type;
	const char *name;
	void *device_data;	/* Type specific data */
};

#define DMI_A_INFO_ENT_MIN_SIZE 0x6
struct dmi_a_info_entry {
	u8 length;
	u16 handle;
	u8 offset;
	u8 str_num;
	u8 value[];
} __packed;

#define DMI_A_INFO_MIN_SIZE	0xB
struct dmi_a_info {
	struct dmi_header header;
	u8 count;
} __packed;

#ifdef CONFIG_DMI

struct dmi_dev_onboard {
	struct dmi_device dev;
	int instance;
	int segment;
	int bus;
	int devfn;
};

extern struct kobject *dmi_kobj;
extern int dmi_check_system(const struct dmi_system_id *list);
const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list);
extern const char * dmi_get_system_info(int field);
extern const struct dmi_device * dmi_find_device(int type, const char *name,
	const struct dmi_device *from);
extern void dmi_setup(void);
extern bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp);
extern int dmi_get_bios_year(void);
extern int dmi_name_in_vendors(const char *str);
extern int dmi_name_in_serial(const char *str);
extern int dmi_available;
extern int dmi_walk(void (*decode)(const struct dmi_header *, void *),
	void *private_data);
extern bool dmi_match(enum dmi_field f, const char *str);
extern void dmi_memdev_name(u16 handle, const char **bank, const char **device);
extern u64 dmi_memdev_size(u16 handle);
extern u8 dmi_memdev_type(u16 handle);
extern u16 dmi_memdev_handle(int slot);
const char *dmi_string_nosave(const struct dmi_header *dm, u8 s);

#else

static inline int dmi_check_system(const struct dmi_system_id *list) { return 0; }
static inline const char * dmi_get_system_info(int field) { return NULL; }
static inline const struct dmi_device * dmi_find_device(int type, const char *name,
	const struct dmi_device *from) { return NULL; }
static inline void dmi_setup(void) { }
static inline bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp)
{
	if (yearp)
		*yearp = 0;
	if (monthp)
		*monthp = 0;
	if (dayp)
		*dayp = 0;
	return false;
}
static inline int dmi_get_bios_year(void) { return -ENXIO; }
static inline int dmi_name_in_vendors(const char *s) { return 0; }
static inline int dmi_name_in_serial(const char *s) { return 0; }
#define dmi_available 0
static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
	void *private_data) { return -ENXIO; }
static inline bool dmi_match(enum dmi_field f, const char *str)
	{ return false; }
static inline void dmi_memdev_name(u16 handle, const char **bank,
		const char **device) { }
static inline u64 dmi_memdev_size(u16 handle) { return ~0ul; }
static inline u8 dmi_memdev_type(u16 handle) { return 0x0; }
static inline u16 dmi_memdev_handle(int slot) { return 0xffff; }
static inline const struct dmi_system_id *

Annotation

Implementation Notes