neorv32_clint.c File Reference

Hardware Local Interruptor (CLINT) HW driver source file. More...

#include <neorv32.h>

Functions
int	neorv32_clint_available (void)
void	neorv32_clint_msi_set (int hart)
void	neorv32_clint_msi_clr (int hart)
uint32_t	neorv32_clint_msi_get (int hart)
void	neorv32_clint_time_set (uint64_t time)
uint64_t	neorv32_clint_time_get (void)
void	neorv32_clint_mtimecmp_set (uint64_t timecmp)
uint64_t	neorv32_clint_mtimecmp_get (void)
void	neorv32_clint_unixtime_set (uint64_t unixtime)
uint64_t	neorv32_clint_unixtime_get (void)

Detailed Description

Hardware Local Interruptor (CLINT) HW driver source file.

Function Documentation

neorv32_clint_available()

int neorv32_clint_available

(

void

)

Check if CLINT module was synthesized.

Returns

0 if CLINT was not synthesized, 1 if CLINT is available.

neorv32_clint_msi_clr()

void neorv32_clint_msi_clr

(

int

hart

)

Clear machine software interrupt.

Parameters

[in]

hart

Hart index (0..4095).

neorv32_clint_msi_get()

uint32_t neorv32_clint_msi_get

(

int

hart

)

Get machine software interrupt register.

Parameters

[in]

hart

Hart index (0..4095).

neorv32_clint_msi_set()

void neorv32_clint_msi_set

(

int

hart

)

Trigger machine software interrupt.

Parameters

[in]

hart

Hart index (0..4095).

neorv32_clint_mtimecmp_get()

uint64_t neorv32_clint_mtimecmp_get

(

void

)

Get MTIMER compare time register (MTIMECMP).

Note

This functions uses MHARTID to automatically select the according hart's MTIMECMP register.

Returns

Current MTIMECMP value.

neorv32_clint_mtimecmp_set()

void neorv32_clint_mtimecmp_set

(

uint64_t

timecmp

)

Set MTIMER compare time register (MTIMECMP) for generating interrupts.

Note

This functions uses MHARTID to automatically select the according hart's MTIMECMP register.

Parameters

[in]

timecmp

System time for interrupt (uint64_t).

neorv32_clint_time_get()

uint64_t neorv32_clint_time_get

(

void

)

Get current system time.

Note

The CLINT MTIMER increments with the primary processor clock.

Returns

Current system time (uint64_t).

neorv32_clint_time_set()

void neorv32_clint_time_set

(

uint64_t

time

)

Set current CLINT system time.

Note

The CLINT MTIMER increments with the primary processor clock.

Parameters

[in]

time

New system time (uint64_t).

neorv32_clint_unixtime_get()

uint64_t neorv32_clint_unixtime_get

(

void

)

Get Unix time from MTIMER.

Returns

Unix time since 00:00:00 UTC, January 1st, 1970 in seconds.

neorv32_clint_unixtime_set()

void neorv32_clint_unixtime_set

(

uint64_t

unixtime

)

Set MTIMER to Unix time.

Parameters

[in]

unixtime

Unix time since 00:00:00 UTC, January 1st, 1970 in seconds.