diff options
Diffstat (limited to 'cpukit/include/sys/timepps.h')
| -rw-r--r-- | cpukit/include/sys/timepps.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/cpukit/include/sys/timepps.h b/cpukit/include/sys/timepps.h index 01212f0b43..502d93833e 100644 --- a/cpukit/include/sys/timepps.h +++ b/cpukit/include/sys/timepps.h @@ -1,3 +1,12 @@ +/** + * @file + * + * @ingroup RTEMSScoreTimecounter + * + * @brief This header file provides interfaces of the Pulse Per Second (PPS) + * support. + */ + /*- * ---------------------------------------------------------------------------- * "THE BEER-WARE LICENSE" (Revision 42): @@ -24,12 +33,24 @@ #include <sys/_ffcounter.h> #include <sys/ioccom.h> #include <sys/time.h> +#ifdef __rtems__ +#include <rtems/score/atomic.h> +#define PPS_SYNC +#define hardpps _Timecounter_Discipline +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ +#endif /* __rtems__ */ #define PPS_API_VERS_1 1 typedef int pps_handle_t; +#ifndef __rtems__ typedef unsigned pps_seq_t; +#else /* __rtems__ */ +typedef Atomic_Uint pps_seq_t; +#endif /* __rtems__ */ typedef struct ntp_fp { unsigned int integral; @@ -157,6 +178,30 @@ struct pps_state { int ppscap; struct timecounter *ppstc; unsigned ppscount[3]; +#ifdef __rtems__ + /** + * @brief Wait for an event. + * + * Called internally when time_pps_fetch() is used. + * It is initialized by pps_init() to a handler which just returns ETIMEDOUT. + * + * @param pps is the pointer to the object. + * + * @param timeout + * + * @retval 0 A wakeup event was received. + * + * @retval ETIMEDOUT A timeout occurred while waiting for the event. + */ + int (*wait)(struct pps_state *pps, struct timespec timeout); + + /** + * @brief Wakeup the tasks waiting for an event. + * + * @param pps is the pointer to the object. + */ + void (*wakeup)(struct pps_state *pps); +#endif /* __rtems__ */ /* * The following fields are valid if the driver calls pps_init_abi(). */ @@ -263,4 +308,9 @@ time_pps_kcbind(pps_handle_t handle, const int kernel_consumer, #endif /* KERNEL */ +#ifdef __rtems__ +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* __rtems__ */ #endif /* !_SYS_TIMEPPS_H_ */ |