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