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/*
* Copyright : (C) 2022 Phytium Information Technology, Inc.
* All Rights Reserved.
*
* This program is OPEN SOURCE software: you can redistribute it and/or modify it
* under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
* either version 1.0 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the Phytium Public License for more details.
*
*
* FilePath: generic_timer.c
* Date: 2022-02-10 14:53:41
* LastEditTime: 2022-02-17 17:30:07
* Description: This files is for
*
* Modify History:
* Ver Who Date Changes
* ----- ------ -------- --------------------------------------
*/
#include "fparameters.h"
#include "fgeneric_timer.h"
#include "faarch32.h"
#include "sdkconfig.h"
#ifndef SDK_CONFIG_H__
#warning "Please include sdkconfig.h"
#endif
#ifdef CONFIG_USE_SYS_TICK
#include "fassert.h"
#include "finterrupt.h"
static volatile u32 genericTick;
static GenericTimerTickHandler usr_tick_handler = NULL;
#endif
#define AARCH32_CNTP_CTL_ENABLE_MASK (1ul << 0)
#define AARCH32_CNTP_CTL_INTERRUPT_MASK (1ul << 1)
void GenericTimerStart(void)
{
u32 ctrl = aarch32_cntp_ctl_get();
if (!(ctrl & AARCH32_CNTP_CTL_ENABLE_MASK))
{
ctrl |= AARCH32_CNTP_CTL_ENABLE_MASK;
aarch32_cntp_ctl_set(ctrl);
}
}
void GenericTimerStop(void)
{
u32 ctrl = aarch32_cntp_ctl_get();
if ((ctrl & AARCH32_CNTP_CTL_ENABLE_MASK))
{
ctrl &= ~AARCH32_CNTP_CTL_ENABLE_MASK;
aarch32_cntp_ctl_set(ctrl);
}
}
void GenericTimerInterruptEnable(void)
{
u32 ctrl = aarch32_cntp_ctl_get();
if (ctrl & AARCH32_CNTP_CTL_INTERRUPT_MASK)
{
ctrl &= ~AARCH32_CNTP_CTL_INTERRUPT_MASK;
aarch32_cntp_ctl_set(ctrl);
}
}
void GenericTimerInterruptDisable(void)
{
u64 ctrl = aarch32_cntp_ctl_get();
if (!(ctrl & AARCH32_CNTP_CTL_INTERRUPT_MASK))
{
ctrl |= AARCH32_CNTP_CTL_INTERRUPT_MASK;
aarch32_cntp_ctl_set(ctrl);
}
}
u32 GenericTimerFrequecy(void)
{
u32 rate = aarch32_cntfrq_get();
return (rate != 0) ? rate : 1000000;
}
u64 GenericTimerRead(void)
{
return aarch32_cntpct_get();
}
void GenericTimerCompare(u32 interval)
{
aarch32_cntp_tval_set(interval);
}
#ifdef CONFIG_USE_SYS_TICK
static void GenericTimerClearTickIntr(u32 tickRateHz)
{
GenericTimerCompare(GenericTimerFrequecy() / tickRateHz);
}
static void GenericTimerTickIntrHandler(s32 vector, void *param)
{
u32 tickRateHz = (u32)param;
(void)vector;
genericTick++; /* tick */
GenericTimerClearTickIntr(tickRateHz); /* clear tick intrrupt */
if (usr_tick_handler) /* execute user handler */
usr_tick_handler();
}
#endif
void GenericTimerSetupSystick(u32 tickRateHz, GenericTimerTickHandler tickHandler, u32 intrPrority)
{
#ifdef CONFIG_USE_SYS_TICK
u32 cntFrq;
/* disable timer and get system frequency */
GenericTimerStop();
cntFrq = GenericTimerFrequecy();
/* set tick rate */
GenericTimerCompare(cntFrq / tickRateHz);
GenericTimerInterruptEnable();
/* set generic timer intrrupt */
InterruptSetPriority(GENERIC_TIMER_NS_IRQ_NUM, intrPrority);
/* install tick handler */
usr_tick_handler = tickHandler;
InterruptInstall(GENERIC_TIMER_NS_IRQ_NUM, GenericTimerTickIntrHandler,
(void *)tickRateHz, "GenericTimerTick");
/* enable intrrupt */
InterruptUmask(GENERIC_TIMER_NS_IRQ_NUM);
GenericTimerStart();
#endif
}
u32 GenericGetTick(void)
{
#ifdef CONFIG_USE_SYS_TICK
return genericTick;
#else
return 0xffU;
#endif
}
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