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/*-
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*
* The is a FreeBSD version of the RFC 2783 API for Pulse Per Second
* timing interfaces.
*/
#ifndef _SYS_TIMEPPS_H_
#define _SYS_TIMEPPS_H_
#include <sys/ioccom.h>
#include <sys/time.h>
#define PPS_API_VERS_1 1
typedef int pps_handle_t;
typedef unsigned pps_seq_t;
typedef struct ntp_fp {
unsigned int integral;
unsigned int fractional;
} ntp_fp_t;
typedef union pps_timeu {
struct timespec tspec;
ntp_fp_t ntpfp;
unsigned long longpad[3];
} pps_timeu_t;
typedef struct {
pps_seq_t assert_sequence; /* assert event seq # */
pps_seq_t clear_sequence; /* clear event seq # */
pps_timeu_t assert_tu;
pps_timeu_t clear_tu;
int current_mode; /* current mode bits */
} pps_info_t;
#define assert_timestamp assert_tu.tspec
#define clear_timestamp clear_tu.tspec
#define assert_timestamp_ntpfp assert_tu.ntpfp
#define clear_timestamp_ntpfp clear_tu.ntpfp
typedef struct {
int api_version; /* API version # */
int mode; /* mode bits */
pps_timeu_t assert_off_tu;
pps_timeu_t clear_off_tu;
} pps_params_t;
#define assert_offset assert_off_tu.tspec
#define clear_offset clear_off_tu.tspec
#define assert_offset_ntpfp assert_off_tu.ntpfp
#define clear_offset_ntpfp clear_off_tu.ntpfp
#define PPS_CAPTUREASSERT 0x01
#define PPS_CAPTURECLEAR 0x02
#define PPS_CAPTUREBOTH 0x03
#define PPS_OFFSETASSERT 0x10
#define PPS_OFFSETCLEAR 0x20
#define PPS_ECHOASSERT 0x40
#define PPS_ECHOCLEAR 0x80
#define PPS_CANWAIT 0x100
#define PPS_CANPOLL 0x200
#define PPS_TSFMT_TSPEC 0x1000
#define PPS_TSFMT_NTPFP 0x2000
#define PPS_KC_HARDPPS 0
#define PPS_KC_HARDPPS_PLL 1
#define PPS_KC_HARDPPS_FLL 2
struct pps_fetch_args {
int tsformat;
pps_info_t pps_info_buf;
struct timespec timeout;
};
struct pps_kcbind_args {
int kernel_consumer;
int edge;
int tsformat;
};
#define PPS_IOC_CREATE _IO('1', 1)
#define PPS_IOC_DESTROY _IO('1', 2)
#define PPS_IOC_SETPARAMS _IOW('1', 3, pps_params_t)
#define PPS_IOC_GETPARAMS _IOR('1', 4, pps_params_t)
#define PPS_IOC_GETCAP _IOR('1', 5, int)
#define PPS_IOC_FETCH _IOWR('1', 6, struct pps_fetch_args)
#define PPS_IOC_KCBIND _IOW('1', 7, struct pps_kcbind_args)
#ifdef _KERNEL
struct pps_state {
/* Capture information. */
struct timehands *capth;
unsigned capgen;
unsigned capcount;
/* State information. */
pps_params_t ppsparam;
pps_info_t ppsinfo;
int kcmode;
int ppscap;
struct timecounter *ppstc;
unsigned ppscount[3];
};
void pps_capture(struct pps_state *pps);
void pps_event(struct pps_state *pps, int event);
void pps_init(struct pps_state *pps);
int pps_ioctl(unsigned long cmd, caddr_t data, struct pps_state *pps);
void hardpps(struct timespec *tsp, long nsec);
#else /* !_KERNEL */
static __inline int
time_pps_create(int filedes, pps_handle_t *handle)
{
int error;
*handle = -1;
error = ioctl(filedes, PPS_IOC_CREATE, 0);
if (error < 0)
return (-1);
*handle = filedes;
return (0);
}
static __inline int
time_pps_destroy(pps_handle_t handle)
{
return (ioctl(handle, PPS_IOC_DESTROY, 0));
}
static __inline int
time_pps_setparams(pps_handle_t handle, const pps_params_t *ppsparams)
{
return (ioctl(handle, PPS_IOC_SETPARAMS, ppsparams));
}
static __inline int
time_pps_getparams(pps_handle_t handle, pps_params_t *ppsparams)
{
return (ioctl(handle, PPS_IOC_GETPARAMS, ppsparams));
}
static __inline int
time_pps_getcap(pps_handle_t handle, int *mode)
{
return (ioctl(handle, PPS_IOC_GETCAP, mode));
}
static __inline int
time_pps_fetch(pps_handle_t handle, const int tsformat,
pps_info_t *ppsinfobuf, const struct timespec *timeout)
{
int error;
struct pps_fetch_args arg;
arg.tsformat = tsformat;
if (timeout == NULL) {
arg.timeout.tv_sec = -1;
arg.timeout.tv_nsec = -1;
} else
arg.timeout = *timeout;
error = ioctl(handle, PPS_IOC_FETCH, &arg);
*ppsinfobuf = arg.pps_info_buf;
return (error);
}
static __inline int
time_pps_kcbind(pps_handle_t handle, const int kernel_consumer,
const int edge, const int tsformat)
{
struct pps_kcbind_args arg;
arg.kernel_consumer = kernel_consumer;
arg.edge = edge;
arg.tsformat = tsformat;
return (ioctl(handle, PPS_IOC_KCBIND, &arg));
}
#endif /* KERNEL */
#endif /* !_SYS_TIMEPPS_H_ */
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