drivers/char/ipmi/ipmi_si_sm.h

Source file repositories/reference/linux-study-clean/drivers/char/ipmi/ipmi_si_sm.h

File Facts

System
Linux kernel
Corpus path
drivers/char/ipmi/ipmi_si_sm.h
Extension
.h
Size
3120 bytes
Lines
105
Domain
Driver Families
Bucket
drivers/char
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 si_sm_handlers {
	/*
	 * Put the version number of the state machine here so the
	 * upper layer can print it.
	 */
	char *version;

	/*
	 * Initialize the data and return the amount of I/O space to
	 * reserve for the space.
	 */
	unsigned int (*init_data)(struct si_sm_data *smi,
				  struct si_sm_io   *io);

	/*
	 * Start a new transaction in the state machine.  This will
	 * return -2 if the state machine is not idle, -1 if the size
	 * is invalid (to large or too small), or 0 if the transaction
	 * is successfully completed.
	 */
	int (*start_transaction)(struct si_sm_data *smi,
				 unsigned char *data, unsigned int size);

	/*
	 * Return the results after the transaction.  This will return
	 * -1 if the buffer is too small, zero if no transaction is
	 * present, or the actual length of the result data.
	 */
	int (*get_result)(struct si_sm_data *smi,
			  unsigned char *data, unsigned int length);

	/*
	 * Call this periodically (for a polled interface) or upon
	 * receiving an interrupt (for a interrupt-driven interface).
	 * If interrupt driven, you should probably poll this
	 * periodically when not in idle state.  This should be called
	 * with the time that passed since the last call, if it is
	 * significant.  Time is in microseconds.
	 */
	enum si_sm_result (*event)(struct si_sm_data *smi, long time);

	/*
	 * Attempt to detect an SMI.  Returns 0 on success or nonzero
	 * on failure.
	 */
	int (*detect)(struct si_sm_data *smi);

	/* The interface is shutting down, so clean it up. */
	void (*cleanup)(struct si_sm_data *smi);

	/* Return the size of the SMI structure in bytes. */
	int (*size)(void);
};

/* Current state machines that we can use. */
extern const struct si_sm_handlers kcs_smi_handlers;
extern const struct si_sm_handlers smic_smi_handlers;
extern const struct si_sm_handlers bt_smi_handlers;

#endif /* __IPMI_SI_SM_H__ */

Annotation

Implementation Notes