kernel-ark/include/linux/dmi.h
Jeff Garzik 1855256c49 drivers/firmware: const-ify DMI API and internals
Three main sets of changes:

1) dmi_get_system_info() return value should have been marked const,
   since callers should not be changing that data.

2) const-ify DMI internals, since DMI firmware tables should,
   whenever possible, be marked const to ensure we never ever write to
   that data area.

3) const-ify DMI API, to enable marking tables const where possible
   in low-level drivers.

And if we're really lucky, this might enable some additional
optimizations on the part of the compiler.

The bulk of the changes are #2 and #3, which are interrelated.  #1 could
have been a separate patch, but it was so small compared to the others,
it was easier to roll it into this changeset.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-09 20:22:20 -04:00

94 lines
2.0 KiB
C

#ifndef __DMI_H__
#define __DMI_H__
#include <linux/list.h>
enum dmi_field {
DMI_NONE,
DMI_BIOS_VENDOR,
DMI_BIOS_VERSION,
DMI_BIOS_DATE,
DMI_SYS_VENDOR,
DMI_PRODUCT_NAME,
DMI_PRODUCT_VERSION,
DMI_PRODUCT_SERIAL,
DMI_PRODUCT_UUID,
DMI_BOARD_VENDOR,
DMI_BOARD_NAME,
DMI_BOARD_VERSION,
DMI_BOARD_SERIAL,
DMI_BOARD_ASSET_TAG,
DMI_CHASSIS_VENDOR,
DMI_CHASSIS_TYPE,
DMI_CHASSIS_VERSION,
DMI_CHASSIS_SERIAL,
DMI_CHASSIS_ASSET_TAG,
DMI_STRING_MAX,
};
enum dmi_device_type {
DMI_DEV_TYPE_ANY = 0,
DMI_DEV_TYPE_OTHER,
DMI_DEV_TYPE_UNKNOWN,
DMI_DEV_TYPE_VIDEO,
DMI_DEV_TYPE_SCSI,
DMI_DEV_TYPE_ETHERNET,
DMI_DEV_TYPE_TOKENRING,
DMI_DEV_TYPE_SOUND,
DMI_DEV_TYPE_IPMI = -1,
DMI_DEV_TYPE_OEM_STRING = -2
};
struct dmi_header {
u8 type;
u8 length;
u16 handle;
};
/*
* DMI callbacks for problem boards
*/
struct dmi_strmatch {
u8 slot;
char *substr;
};
struct dmi_system_id {
int (*callback)(const struct dmi_system_id *);
const char *ident;
struct dmi_strmatch matches[4];
void *driver_data;
};
#define DMI_MATCH(a, b) { a, b }
struct dmi_device {
struct list_head list;
int type;
const char *name;
void *device_data; /* Type specific data */
};
#ifdef CONFIG_DMI
extern int dmi_check_system(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_scan_machine(void);
extern int dmi_get_year(int field);
extern int dmi_name_in_vendors(const char *str);
#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 int dmi_get_year(int year) { return 0; }
static inline int dmi_name_in_vendors(const char *s) { return 0; }
#endif
#endif /* __DMI_H__ */