timer.h File Reference

#include "hvmm_types.h"
#include "arch_types.h"

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Data Structures
struct	timer_channel
Defines
#define	TIMER_MAX_CHANNEL_CALLBACKS   8
Typedefs
typedef void(*	timer_callback_t )(void *pdata)
Enumerations
enum	timer_channel_t { timer_sched = 0, TIMER_NUM_MAX_CHANNELS }
Functions
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 handler)
hvmm_status_t	timer_remove_callback (timer_channel_t channel, timer_callback_t handler)
uint64_t	timer_t2c (uint64_t time_us)

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Define Documentation

#define TIMER_MAX_CHANNEL_CALLBACKS   8

Definition at line 29 of file timer.h.

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Typedef Documentation

typedef void(* timer_callback_t)(void *pdata)

Definition at line 36 of file timer.h.

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Enumeration Type Documentation

enum timer_channel_t

Enumerator:

timer_sched
TIMER_NUM_MAX_CHANNELS

Definition at line 31 of file timer.h.

            {
    timer_sched = 0,
    TIMER_NUM_MAX_CHANNELS
} timer_channel_t;

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Function Documentation

hvmm_status_t timer_add_callback	(	timer_channel_t	channel,
		timer_callback_t	handler
	)

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	handler
	)

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;
}