drivers/pnp/pnpbios/pnpbios.h

Source file repositories/reference/linux-study-clean/drivers/pnp/pnpbios/pnpbios.h

File Facts

System
Linux kernel
Corpus path
drivers/pnp/pnpbios/pnpbios.h
Extension
.h
Size
5271 bytes
Lines
169
Domain
Driver Families
Bucket
drivers/pnp
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct pnp_dev_node_info {
	__u16 no_nodes;
	__u16 max_node_size;
};
struct pnp_docking_station_info {
	__u32 location_id;
	__u32 serial;
	__u16 capabilities;
};
struct pnp_isa_config_struc {
	__u8 revision;
	__u8 no_csns;
	__u16 isa_rd_data_port;
	__u16 reserved;
};
struct escd_info_struc {
	__u16 min_escd_write_size;
	__u16 escd_size;
	__u32 nv_storage_base;
};
struct pnp_bios_node {
	__u16 size;
	__u8 handle;
	__u32 eisa_id;
	__u8 type_code[3];
	__u16 flags;
	__u8 data[];
};
#pragma pack()

/* non-exported */
extern struct pnp_dev_node_info node_info;

extern int pnp_bios_dev_node_info(struct pnp_dev_node_info *data);
extern int pnp_bios_get_dev_node(u8 *nodenum, char config,
				 struct pnp_bios_node *data);
extern int pnp_bios_set_dev_node(u8 nodenum, char config,
				 struct pnp_bios_node *data);
extern int pnp_bios_get_stat_res(char *info);
extern int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data);
extern int pnp_bios_escd_info(struct escd_info_struc *data);
extern int pnp_bios_read_escd(char *data, u32 nvram_base);
extern int pnp_bios_dock_station_info(struct pnp_docking_station_info *data);

#pragma pack(1)
union pnp_bios_install_struct {
	struct {
		u32 signature;    /* "$PnP" */
		u8 version;	  /* in BCD */
		u8 length;	  /* length in bytes, currently 21h */
		u16 control;	  /* system capabilities */
		u8 checksum;	  /* all bytes must add up to 0 */

		u32 eventflag;    /* phys. address of the event flag */
		u16 rmoffset;     /* real mode entry point */
		u16 rmcseg;
		u16 pm16offset;   /* 16 bit protected mode entry */
		u32 pm16cseg;
		u32 deviceID;	  /* EISA encoded system ID or 0 */
		u16 rmdseg;	  /* real mode data segment */
		u32 pm16dseg;	  /* 16 bit pm data segment base */
	} fields;
	char chars[0x21];	  /* To calculate the checksum */
};
#pragma pack()

extern int pnp_bios_present(void);
extern int  pnpbios_dont_use_current_config;

extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node);
extern int pnpbios_read_resources_from_node(struct pnp_dev *dev, struct pnp_bios_node *node);
extern int pnpbios_write_resources_to_node(struct pnp_dev *dev, struct pnp_bios_node *node);

extern void pnpbios_print_status(const char * module, u16 status);
extern void pnpbios_calls_init(union pnp_bios_install_struct * header);

#ifdef CONFIG_PNPBIOS_PROC_FS
extern int pnpbios_interface_attach_device(struct pnp_bios_node * node);
extern int pnpbios_proc_init (void);
extern void pnpbios_proc_exit (void);
#else
static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; }
static inline int pnpbios_proc_init (void) { return 0; }
static inline void pnpbios_proc_exit (void) { ; }
#endif /* CONFIG_PNPBIOS_PROC_FS */

Annotation

Implementation Notes