#include <sys/cdefs.h>
#include "opt_ffclock.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/clock.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/sx.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <sys/timetc.h>
#include "clock_if.h"

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Data Structures
struct	rtc_instance

Functions
	__FBSDID ("$FreeBSD$")

	SYSCTL_INT (_debug, OID_AUTO, clock_show_io, CTLFLAG_RWTUN, &show_io, 0, "Enable debug printing of RTC clock I/O; 1=reads, 2=writes, 3=both.")

static int	sysctl_clock_do_io (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_debug, OID_AUTO, clock_do_io, CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_MPSAFE, 0, 0, sysctl_clock_do_io, "I", "Trigger one-time IO on RTC clocks; 1=read (and discard), 2=write")

	SYSCTL_INT (_machdep, OID_AUTO, disable_rtc_set, CTLFLAG_RW, &disable_rtc_set, 0, "Disallow adjusting time-of-day clock")

static void	settime_task_func (void *arg, int pending)

	LIST_HEAD (rtc_listhead, rtc_instance)

	SX_SYSINIT (rtc_list_lock_init, &rtc_list_lock, "rtc list")

static void	clock_dbgprint_hdr (device_t dev, int rw)

void	clock_dbgprint_bcd (device_t dev, int rw, const struct bcd_clocktime *bct)

void	clock_dbgprint_ct (device_t dev, int rw, const struct clocktime *ct)

void	clock_dbgprint_err (device_t dev, int rw, int err)

void	clock_dbgprint_ts (device_t dev, int rw, const struct timespec *ts)

void	clock_register_flags (device_t clockdev, long resolution, int flags)

void	clock_register (device_t dev, long res)

void	clock_unregister (device_t clockdev)

void	clock_schedule (device_t clockdev, u_int offsetns)

static int	read_clocks (struct timespec *ts, bool debug_read)

void	inittodr (time_t base)

void	resettodr (void)

Variables
static int	show_io

static int	disable_rtc_set

static struct rtc_listhead	rtc_list = LIST_HEAD_INITIALIZER(rtc_list)

static struct sx	rtc_list_lock

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ clock_dbgprint_bcd()

void clock_dbgprint_bcd	(	device_t	dev,
		int	rw,
		const struct bcd_clocktime *	bct
	)

Definition at line 171 of file subr_rtc.c.

References clock_dbgprint_hdr(), clock_print_bcd(), printf(), and show_io.

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◆ clock_dbgprint_ct()

void clock_dbgprint_ct	(	device_t	dev,
		int	rw,
		const struct clocktime *	ct
	)

Definition at line 182 of file subr_rtc.c.

References clock_dbgprint_hdr(), clock_print_ct(), printf(), and show_io.

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◆ clock_dbgprint_err()

void clock_dbgprint_err	(	device_t	dev,
		int	rw,
		int	err
	)

Definition at line 193 of file subr_rtc.c.

References clock_dbgprint_hdr(), printf(), and show_io.

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◆ clock_dbgprint_hdr()

static void clock_dbgprint_hdr	(	device_t	dev,
		int	rw
	)

static

Definition at line 160 of file subr_rtc.c.

References clock_print_ts(), device_printf(), getnanotime(), and printf().

Referenced by clock_dbgprint_bcd(), clock_dbgprint_ct(), clock_dbgprint_err(), and clock_dbgprint_ts().

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◆ clock_dbgprint_ts()

void clock_dbgprint_ts	(	device_t	dev,
		int	rw,
		const struct timespec *	ts
	)

Definition at line 203 of file subr_rtc.c.

References clock_dbgprint_hdr(), clock_print_ts(), printf(), show_io, and ts.

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◆ clock_register()

void clock_register	(	device_t	dev,
		long	res
	)

Definition at line 250 of file subr_rtc.c.

References clock_register_flags(), and res.

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◆ clock_register_flags()

void clock_register_flags	(	device_t	clockdev,
		long	resolution,
		int	flags
	)

Definition at line 214 of file subr_rtc.c.

References rtc_instance::clockdev, device_printf(), rtc_instance::flags, malloc(), rtc_instance::resadj, rtc_instance::resolution, rtc_instance::rtc_entries, rtc_list, rtc_list_lock, rtc_instance::schedns, settime_task_func(), and rtc_instance::stask.

Referenced by clock_register().

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◆ clock_schedule()

void clock_schedule	(	device_t	clockdev,
		u_int	offsetns
	)

Definition at line 277 of file subr_rtc.c.

References rtc_instance::clockdev, rtc_instance::rtc_entries, rtc_list, rtc_list_lock, and rtc_instance::schedns.

◆ clock_unregister()

void clock_unregister ( device_t clockdev )

Definition at line 257 of file subr_rtc.c.

References rtc_instance::clockdev, free(), rtc_instance::rtc_entries, rtc_list, rtc_list_lock, rtc_instance::stask, taskqueue_cancel_timeout(), and taskqueue_drain_timeout().

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◆ inittodr()

void inittodr ( time_t base )

Definition at line 334 of file subr_rtc.c.

References printf(), read_clocks(), tc_setclock(), and ts.

Referenced by vfs_mountroot().

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◆ LIST_HEAD()

LIST_HEAD	(	rtc_listhead	,
		rtc_instance
	)

◆ read_clocks()

static int read_clocks	(	struct timespec *	ts,
		bool	debug_read
	)

static

Definition at line 292 of file subr_rtc.c.

References bootverbose, rtc_instance::clockdev, device_printf(), rtc_instance::flags, rtc_instance::resadj, rtc_instance::rtc_entries, rtc_list, rtc_list_lock, ts, and utc_offset().

Referenced by inittodr(), and sysctl_clock_do_io().

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◆ resettodr()

void resettodr ( void )

Definition at line 377 of file subr_rtc.c.

References disable_rtc_set, getnanotime(), rtc_instance::rtc_entries, rtc_list, rtc_list_lock, rtc_instance::schedns, rtc_instance::stask, and taskqueue_enqueue_timeout_sbt().

Referenced by periodic_resettodr(), settime(), shutdown_resettodr(), sysctl_clock_do_io(), and sysctl_machdep_adjkerntz().

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◆ settime_task_func()

static void settime_task_func	(	void *	arg,
		int	pending
	)

static

Definition at line 137 of file subr_rtc.c.

References bootverbose, rtc_instance::clockdev, device_printf(), rtc_instance::flags, getnanotime(), rtc_instance::resadj, ts, and utc_offset().

Referenced by clock_register_flags().

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◆ SX_SYSINIT()

SX_SYSINIT	(	rtc_list_lock_init	,
		&	rtc_list_lock,
		"rtc list"
	)

◆ sysctl_clock_do_io()

static int sysctl_clock_do_io ( SYSCTL_HANDLER_ARGS )

static

Definition at line 404 of file subr_rtc.c.

References printf(), read_clocks(), resettodr(), sysctl_handle_int(), and value.

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◆ SYSCTL_INT() [1/2]

SYSCTL_INT	(	_debug	,
		OID_AUTO	,
		clock_show_io	,
		CTLFLAG_RWTUN	,
		&	show_io,
		0	,
		"Enable debug printing of RTC clock I/O;	1 = `reads`,
		2	= `writes`
	)

◆ SYSCTL_INT() [2/2]

SYSCTL_INT	(	_machdep	,
		OID_AUTO	,
		disable_rtc_set	,
		CTLFLAG_RW	,
		&	disable_rtc_set,
		0	,
		"Disallow adjusting time-of-day clock"
	)

◆ SYSCTL_PROC()

SYSCTL_PROC	(	_debug	,
		OID_AUTO	,
		clock_do_io	,
		CTLTYPE_INT\|CTLFLAG_RW\|	CTLFLAG_MPSAFE,
		0	,
		0	,
		sysctl_clock_do_io	,
		"I"	,
		"Trigger one-time IO on RTC clocks;	1 = `read (and discard)`
	)

Variable Documentation

◆ disable_rtc_set

int disable_rtc_set

static

Definition at line 89 of file subr_rtc.c.

Referenced by resettodr().

◆ rtc_list

struct rtc_listhead rtc_list = LIST_HEAD_INITIALIZER(rtc_list)

static

Definition at line 127 of file subr_rtc.c.

Referenced by clock_register_flags(), clock_schedule(), clock_unregister(), read_clocks(), and resettodr().

◆ rtc_list_lock

struct sx rtc_list_lock

static

Definition at line 128 of file subr_rtc.c.

Referenced by clock_register_flags(), clock_schedule(), clock_unregister(), read_clocks(), and resettodr().

◆ show_io

int show_io

static

Definition at line 79 of file subr_rtc.c.

Referenced by clock_dbgprint_bcd(), clock_dbgprint_ct(), clock_dbgprint_err(), and clock_dbgprint_ts().

Data Structures

Functions

Variables

Function Documentation

◆ __FBSDID()

◆ clock_dbgprint_bcd()

◆ clock_dbgprint_ct()

◆ clock_dbgprint_err()

◆ clock_dbgprint_hdr()

◆ clock_dbgprint_ts()

◆ clock_register()

◆ clock_register_flags()

◆ clock_schedule()

◆ clock_unregister()

◆ inittodr()

◆ LIST_HEAD()

◆ read_clocks()

◆ resettodr()

◆ settime_task_func()

◆ SX_SYSINIT()

◆ sysctl_clock_do_io()

◆ SYSCTL_INT() [1/2]

◆ SYSCTL_INT() [2/2]

◆ SYSCTL_PROC()

Variable Documentation

◆ disable_rtc_set

◆ rtc_list

◆ rtc_list_lock

◆ show_io