dmclock.c

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/* $id:dmClock.c  V1.0 2001/09/5 */

/******************************************************************************
 *  This source code has been made available to you by CORETEK  on
 *  AS-IS.Anyone receiving this source is licensed under
 *  CORETEK copyrights to use it in any way he or she deems fit,including
 *  copying it,modifying it,compiling it,and redistributing it either with
 *  or without modifictions.
 *
 *
 *  Any person who transfers this source code or any derivative work must
 *  include the CORETEK copyright notice, this paragraph,and the preceding
 *  two paragraphs in the transferred software.
 *
 *
 *       COPYRIGHT CORETEK CORPORATION 2001
 *     LICENSED MATERIAL - PROGRAM PROPERTY OF CORETEK
 *****************************************************************************/

/******************************************************************************
 *
 *  FILE: dmClock.c
 *
 *  MODULE: DM
 *
 *  PURPOSE: Three function definitions for set, obtain, and continually update
 *		the current date and time.
 *
 *  AUTHOR(S):Zhang Yumin
 *
 *  GROUP:TOOL_GROUP
 *
 *  DATE CREATED:2001/09/05
 *
 *  REFERENCE DOCUMENT ID:
 *
 *  MODIFICATIONS:
 *  Date          user Name       Description
 *  2001/09/05    Zhang Yumin    Create this file
 *
 *********************************************************************************/

#include "dmLibio.h"
#include "dmClock.h"

/*
 *  Handle used to set the RTC time.
 */
T_VOID ( *fnDM_ClockRtcSet)(T_DM_TimeOfDay tod);
T_VOID ( *fnDM_ClockRtcGet)(T_DM_TimeOfDay *tod);

T_DM_StatusCode( *fnDM_ClockAnnounce)(T_DM_ClockAnnounce);

/********************************************************************
 *  FUNCTION: fnDM_ClockGet
 *
 *  PURPOSE:  This directive returns the current date and time.
 *			  (External function)
 *  PARAMETERS:
 *
 *    Input:  option 	  -which value to return
 *     		  time_buffer -pointer to output buffer (a time and date
 *                    	  structure or an interval)
 *    Output: time_buffer      - output filled in
 *    InOut:  None
 *
 *   Return value: Upon successful completion, a value of 0 is returned.
 *				  Otherwise, a value of -1 is returned and the global
 *		          integer variable errno is set to indicate the error.
 *
 *   Reentrant: No
 ********************************************************************/
T_WORD fnDM_ClockGet(
  T_DM_ClockGetOptions  option,
  T_VOID                 *time_buffer
)
{
	T_DM_StatusCode status;
	T_WORD	rc;

	if((fnDM_ClockRtcGet)&&
	   (  option == DM_CLOCK_GET_TOD
	    ||option == DM_CLOCK_GET_SECONDS_SINCE_EPOCH
	    ||option == DM_CLOCK_GET_TIME_VALUE
	    ||option == DM_CLOCK_GET_SECONDS_SINCE_BOOT)&&
	   (((T_UWORD)fnDM_ClockRtcGet)!= ((T_UWORD)0x1)))
	{
		T_UWORD ticks;
		T_DM_TimeOfDay tod;

		ticks = fnDM_TodCurTicks();
		/*
		*	Get the RTC time and set the TOD,
		*	but the RTC not return the ticks,
		*	so we preserve the current ticks first.
		*   After return from RTC we resume the
		*   current ticks.
		*/
		(*fnDM_ClockRtcGet)(&tod);

		tod.ticks = ticks;

		fnDM_TodSet(&tod);
	}

	status = fnDM_TodGet(option,time_buffer);
	rc = fnDM_StatusToErrno(status);
	if(rc!=0)
	{
	    errno = rc;
	    return -1;
	}

	return 0;
}

/********************************************************************
 *  FUNCTION: fnDM_ClockSet
 *
 *  PURPOSE:  This directive sets the date and time for this node.
 *			  (External function)
 *  PARAMETERS:
 *
 *    Input:  time_buffer -pointer to the time and date structure
 *    Output: None
 *    InOut:  None
 *
 *  Return value: DM_SUCCESSFUL  - if successful
 *                error code       - if unsuccessful
 *  Reentrant: No
 ********************************************************************/
T_WORD fnDM_ClockSet(
  T_DM_TimeOfDay *time_buffer
)
{
	T_DM_StatusCode status;
	T_WORD	rc;

	if((fnDM_ClockRtcSet)&& (((T_UWORD)fnDM_ClockRtcSet)!= ((T_UWORD)0x1)))
		(*fnDM_ClockRtcSet)(*time_buffer);

	status = fnDM_TodSet(time_buffer);
	rc = fnDM_StatusToErrno(status);
	if(rc!=0)
	{
	    errno = rc;
	    return -1;
	}

	return 0;
}

/********************************************************************
 *  FUNCTION: fnDM_ClockTimerTicks
 *
 *  PURPOSE:  This directive notifies the executve that a tick has
 *  		  occurred.When the tick occurs the time manager updates
 *  	      and maintains the calendar time, timeslicing, and any
 *			  timeout delays.
 *  PARAMETERS:
 *
 *    Input:  None
 *    Output: None
 *    InOut:  None
 *
 *  Return value: None
 *  Reentrant: No
 ********************************************************************/
T_VOID fnDM_ClockTimerTicks()
{
	if(fnDM_ClockAnnounce)
		(*fnDM_ClockAnnounce)(DM_ANNOUNCE_TICK);

	inlDM_TodTickleTicks();

	if((!fnDM_ClockRtcSet))
		fnDM_TodTickle();

	//printk("Timer is running!\n");
}

/********************************************************************
 *  FUNCTION: fnDM_ClockRtcTicks
 *
 *  PURPOSE:  This directive notifies the executve that a tick has
 *  		  occurred.When the tick occurs the time manager updates
 *  	      and maintains the calendar time, timeslicing, and any
 *			  timeout delays.
 *  PARAMETERS:
 *
 *    Input:  None
 *    Output: None
 *    InOut:  None
 *
 *  Return value: None
 *  Reentrant: No
 ********************************************************************/
T_VOID fnDM_ClockRtcTicks()
{
	if(fnDM_ClockAnnounce)
		(*fnDM_ClockAnnounce)(DM_ANNOUNCE_TICK);

	inlDM_TodTickleTicks();

	//printk("RTC is running!\n");
}

/********************************************************************
 *  FUNCTION: fnDM_ClockSecondInterrupt
 *
 *  PURPOSE:  This directive notifies the executve that a tick has
 *  		  occurred.When the tick occurs the time manager updates
 *  	      and maintains the calendar time, timeslicing, and any
 *			  timeout delays.
 *  PARAMETERS:
 *
 *    Input:  None
 *    Output: None
 *    InOut:  None
 *
 *  Return value: None
 *  Reentrant: No
 ********************************************************************/
T_VOID fnDM_ClockSecondInterrupt()
{
	inlDM_TodSecondInterrupt();

	if(fnDM_ClockAnnounce)
		(*fnDM_ClockAnnounce)(DM_ANNOUNCE_SECOND);
}


/********************************************************************
 *  FUNCTION: fnDM_ClockSecondInterrupt
 *
 *  PURPOSE:  This directive notifies the executve that a tick has
 *  		  occurred.When the tick occurs the time manager updates
 *  	      and maintains the calendar time, timeslicing, and any
 *			  timeout delays.
 *  PARAMETERS:
 *
 *    Input:  None
 *    Output: None
 *    InOut:  None
 *
 *  Return value: DM_SUCCESSFUL  - always succeeds
 *				  DM_INVALID_CLOCK - if invalid arguments!
 *  Reentrant: No
 ********************************************************************/
T_DM_StatusCode fnDM_ClockRefresh(T_DM_TOD_Control *the_tod)
{
	return fnDM_TodSet(the_tod);
}