include/linux/isapnp.h

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

File Facts

System
Linux kernel
Corpus path
include/linux/isapnp.h
Extension
.h
Size
2944 bytes
Lines
101
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 isapnp_card_id {
	unsigned long driver_data;	/* data private to the driver */
	unsigned short card_vendor, card_device;
	struct {
		unsigned short vendor, function;
	} devs[ISAPNP_CARD_DEVS];	/* logical devices */
};

#define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
		.card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device =  ISAPNP_DEVICE(_cdevice), \
		.vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
#define ISAPNP_DEVICE_SINGLE_END \
		.card_vendor = 0, .card_device = 0

#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))

#define __ISAPNP__

/* lowlevel configuration */
int isapnp_present(void);
int isapnp_cfg_begin(int csn, int device);
int isapnp_cfg_end(void);
unsigned char isapnp_read_byte(unsigned char idx);
void isapnp_write_byte(unsigned char idx, unsigned char val);

#ifdef CONFIG_PROC_FS
int isapnp_proc_init(void);
int isapnp_proc_done(void);
#else
static inline int isapnp_proc_init(void) { return 0; }
static inline int isapnp_proc_done(void) { return 0; }
#endif

/* compat */
struct pnp_dev *pnp_find_dev(struct pnp_card *card,
			     unsigned short vendor,
			     unsigned short function,
			     struct pnp_dev *from);

#else /* !CONFIG_ISAPNP */

/* lowlevel configuration */
static inline int isapnp_present(void) { return 0; }
static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
static inline int isapnp_cfg_end(void) { return -ENODEV; }
static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }

static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
					   unsigned short vendor,
					   unsigned short function,
					   struct pnp_dev *from) { return NULL; }

#endif /* CONFIG_ISAPNP */

#endif /* __KERNEL__ */
#endif /* LINUX_ISAPNP_H */

Annotation

Implementation Notes