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#ifndef _GPXE_TIMER_H
#define _GPXE_TIMER_H
/** @file
*
* gPXE timer API
*
* The timer API provides udelay() for fixed delays, and currticks()
* for a monotonically increasing tick counter.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <gpxe/api.h>
#include <config/timer.h>
/**
* Calculate static inline timer API function name
*
* @v _prefix Subsystem prefix
* @v _api_func API function
* @ret _subsys_func Subsystem API function
*/
#define TIMER_INLINE( _subsys, _api_func ) \
SINGLE_API_INLINE ( TIMER_PREFIX_ ## _subsys, _api_func )
/**
* Provide a timer API implementation
*
* @v _prefix Subsystem prefix
* @v _api_func API function
* @v _func Implementing function
*/
#define PROVIDE_TIMER( _subsys, _api_func, _func ) \
PROVIDE_SINGLE_API ( TIMER_PREFIX_ ## _subsys, _api_func, _func )
/**
* Provide a static inline timer API implementation
*
* @v _prefix Subsystem prefix
* @v _api_func API function
*/
#define PROVIDE_TIMER_INLINE( _subsys, _api_func ) \
PROVIDE_SINGLE_API_INLINE ( TIMER_PREFIX_ ## _subsys, _api_func )
/* Include all architecture-independent I/O API headers */
#include <gpxe/efi/efi_timer.h>
/* Include all architecture-dependent I/O API headers */
#include <bits/timer.h>
/**
* Delay for a fixed number of microseconds
*
* @v usecs Number of microseconds for which to delay
*/
void udelay ( unsigned long usecs );
/**
* Get current system time in ticks
*
* @ret ticks Current time, in ticks
*/
unsigned long currticks ( void );
/**
* Get number of ticks per second
*
* @ret ticks_per_sec Number of ticks per second
*/
unsigned long ticks_per_sec ( void );
/** Number of ticks per second */
#define TICKS_PER_SEC ( ticks_per_sec() )
#endif /* _GPXE_TIMER_H */
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