#include "timer.h"
#include "generic_timer.h"
#include <config/cfg_platform.h>
#include <k-hypervisor-config.h>

Include dependency graph for timer.c:

Functions
static void	_timer_each_callback_channel (timer_channel_t channel, void *param)
static int	_timer_channel_num_callbacks (timer_channel_t channel)
static void	_timer_hw_callback (void *pdata)
hvmm_status_t	timer_init (timer_channel_t channel)
hvmm_status_t	timer_start (timer_channel_t channel)
hvmm_status_t	timer_stop (timer_channel_t channel)
hvmm_status_t	timer_set_interval (timer_channel_t channel, uint32_t interval_us)
uint32_t	timer_get_interval (timer_channel_t channel)
hvmm_status_t	timer_add_callback (timer_channel_t channel, timer_callback_t callback)
hvmm_status_t	timer_remove_callback (timer_channel_t channel, timer_callback_t callback)
uint64_t	timer_t2c (uint64_t time_us)
Variables
static struct timer_channel	_channels [TIMER_NUM_MAX_CHANNELS]

Function Documentation

static int _timer_channel_num_callbacks ( timer_channel_t channel ) [static]

Definition at line 23 of file timer.c.

{
    int i, count = 0;
    for( i = 0; i < TIMER_MAX_CHANNEL_CALLBACKS; i++) {
        if( _channels[channel].callbacks[i] ) count++;
    }
    return count;
}

static void _timer_each_callback_channel	(	timer_channel_t	channel,
		void *	param
	)		`[static]`

Definition at line 15 of file timer.c.

{
    int i;
    for( i = 0; i < TIMER_MAX_CHANNEL_CALLBACKS; i++ ) {
        if( _channels[channel].callbacks[i] ) _channels[channel].callbacks[i](param);
    }
}

static void _timer_hw_callback ( void * pdata ) [static]

Definition at line 32 of file timer.c.

{
    generic_timer_disable_int(GENERIC_TIMER_HYP);

    _timer_each_callback_channel(timer_sched, pdata);

    generic_timer_set_tval(GENERIC_TIMER_HYP, _channels[timer_sched].interval_us);
    
    generic_timer_enable_int(GENERIC_TIMER_HYP);
}

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hvmm_status_t timer_add_callback	(	timer_channel_t	channel,
		timer_callback_t	callback
	)

Definition at line 87 of file timer.c.

{
    int i;
    hvmm_status_t result = HVMM_STATUS_BUSY;
    for( i = 0; i < TIMER_MAX_CHANNEL_CALLBACKS; i++ ) {
        if( _channels[channel].callbacks[i] == 0 ) {
            _channels[channel].callbacks[i] = callback;
            result = HVMM_STATUS_SUCCESS;
            break;
        }
    }
    return result;
}

uint32_t timer_get_interval ( timer_channel_t channel )

Definition at line 82 of file timer.c.

{
    return _channels[channel].interval_us;
}

hvmm_status_t timer_init ( timer_channel_t channel )

Definition at line 43 of file timer.c.

{   
    int i;
    for( i = 0; i < TIMER_MAX_CHANNEL_CALLBACKS; i++ ) {
        _channels[channel].callbacks[i] = 0;
    }

    generic_timer_init();
    return HVMM_STATUS_SUCCESS;
}

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hvmm_status_t timer_remove_callback	(	timer_channel_t	channel,
		timer_callback_t	callback
	)

Definition at line 101 of file timer.c.

{
    int i;
    hvmm_status_t result = HVMM_STATUS_NOT_FOUND;
    for( i = 0; i < TIMER_MAX_CHANNEL_CALLBACKS; i++ ) {
        if ( _channels[channel].callbacks[i] == callback ) {
            _channels[channel].callbacks[i] = 0;
            result = HVMM_STATUS_SUCCESS;
            break;
        }
    }
    return result;
}

hvmm_status_t timer_set_interval	(	timer_channel_t	channel,
		uint32_t	interval_us
	)

Definition at line 76 of file timer.c.

{
    _channels[channel].interval_us = timer_t2c(interval_us);
    return HVMM_STATUS_SUCCESS;
}

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hvmm_status_t timer_start ( timer_channel_t channel )

Definition at line 54 of file timer.c.

{
    if ( _timer_channel_num_callbacks( channel ) > 0 ) {

        generic_timer_set_callback(GENERIC_TIMER_HYP, &_timer_hw_callback );
    
        generic_timer_set_tval(GENERIC_TIMER_HYP, _channels[channel].interval_us);
    
        generic_timer_enable_irq(GENERIC_TIMER_HYP);

        generic_timer_enable_int(GENERIC_TIMER_HYP);
    }

    return HVMM_STATUS_SUCCESS;
}

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hvmm_status_t timer_stop ( timer_channel_t channel )

Definition at line 70 of file timer.c.

{
    generic_timer_disable_int(GENERIC_TIMER_HYP);
    return HVMM_STATUS_SUCCESS;
}

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uint64_t timer_t2c ( uint64_t time_us )

Definition at line 115 of file timer.c.

{
    return time_us * COUNT_PER_USEC;
}

Variable Documentation

struct timer_channel _channels[TIMER_NUM_MAX_CHANNELS] [static]

Definition at line 13 of file timer.c.

Functions

Variables

Function Documentation

Variable Documentation