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viacuda: Use timer ids instead of timer flags.

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This commit is contained in:
joevt 2024-04-22 17:10:40 -07:00 committed by dingusdev
parent 288d97f24c
commit 76f966845d
2 changed files with 19 additions and 24 deletions
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40
devices/common/viacuda.cpp
View File

@ -68,9 +68,7 @@ ViaCuda::ViaCuda() {
// intialize counters/timers
this->t1_counter = 0xFFFF;
this->t1_active = false;
this->t2_counter = 0xFFFF;
this->t2_active = false;
// calculate VIA clock duration in ns
this->via_clk_dur = 1.0f / VIA_CLOCK_HZ * NS_PER_SEC;
@ -102,17 +100,17 @@ ViaCuda::ViaCuda() {
ViaCuda::~ViaCuda()
{
if (this->sr_timer_on) {
if (this->sr_timer_id) {
TimerManager::get_instance()->cancel_timer(this->sr_timer_id);
this->sr_timer_on = false;
this->sr_timer_id = 0;
}
if (this->t1_active) {
if (this->t1_timer_id) {
TimerManager::get_instance()->cancel_timer(this->t1_timer_id);
this->t1_active = false;
this->t1_timer_id = 0;
}
if (this->t2_active) {
if (this->t2_timer_id) {
TimerManager::get_instance()->cancel_timer(this->t2_timer_id);
this->t2_active = false;
this->t2_timer_id = 0;
}
if (this->treq_timer_id) {
TimerManager::get_instance()->cancel_timer(this->treq_timer_id);
@ -226,9 +224,9 @@ void ViaCuda::write(int reg, uint8_t value) {
ABORT_F("Unsupported VIA T1 mode, ACR=0x%X", this->via_regs[VIA_ACR]);
}
// cancel active T1 timer task
if (this->t1_active) {
if (this->t1_timer_id) {
TimerManager::get_instance()->cancel_timer(this->t1_timer_id);
this->t1_active = false;
this->t1_timer_id = 0;
}
// clear T1 flag in IFR
this->_via_ifr &= ~VIA_IF_T1;
@ -242,19 +240,19 @@ void ViaCuda::write(int reg, uint8_t value) {
this->t1_timer_id = TimerManager::get_instance()->add_oneshot_timer(
static_cast<uint64_t>(this->via_clk_dur * (this->t1_counter + 3) + 0.5f),
[this]() {
this->t1_timer_id = 0;
this->assert_t1_int();
}
);
this->t1_active = true;
break;
case VIA_T2CH:
if (this->via_regs[VIA_ACR] & 0x20) {
ABORT_F("VIA T2 pulse count mode not supported!");
}
// cancel active T2 timer task
if (this->t2_active) {
if (this->t2_timer_id) {
TimerManager::get_instance()->cancel_timer(this->t2_timer_id);
this->t2_active = false;
this->t2_timer_id = 0;
}
// clear T2 flag in IFR
this->_via_ifr &= ~VIA_IF_T2;
@ -268,10 +266,10 @@ void ViaCuda::write(int reg, uint8_t value) {
this->t2_timer_id = TimerManager::get_instance()->add_oneshot_timer(
static_cast<uint64_t>(this->via_clk_dur * (this->t2_counter + 3) + 0.5f),
[this]() {
this->t2_timer_id = 0;
this->assert_t2_int();
}
);
this->t2_active = true;
break;
case VIA_SR:
this->_via_ifr &= ~VIA_IF_SR;
@ -310,20 +308,17 @@ void ViaCuda::update_irq()
}
void ViaCuda::assert_sr_int() {
this->sr_timer_on = false;
this->_via_ifr |= VIA_IF_SR;
update_irq();
}
void ViaCuda::assert_t1_int() {
this->_via_ifr |= VIA_IF_T1;
this->t1_active = false;
update_irq();
}
void ViaCuda::assert_t2_int() {
this->_via_ifr |= VIA_IF_T2;
this->t2_active = false;
update_irq();
}
@ -356,14 +351,17 @@ void ViaCuda::assert_ctrl_line(ViaLine line)
}
void ViaCuda::schedule_sr_int(uint64_t timeout_ns) {
if (this->sr_timer_on) {
if (this->sr_timer_id) {
TimerManager::get_instance()->cancel_timer(this->sr_timer_id);
this->sr_timer_on = false;
this->sr_timer_id = 0;
}
this->sr_timer_id = TimerManager::get_instance()->add_oneshot_timer(
timeout_ns,
[this]() { this->assert_sr_int(); });
this->sr_timer_on = true;
[this]() {
this->sr_timer_id = 0;
this->assert_sr_int();
}
);
}
void ViaCuda::write(uint8_t new_state) {

3
devices/common/viacuda.h
View File

@ -182,16 +182,13 @@ private:
// VIA internal state
uint32_t sr_timer_id = 0;
bool sr_timer_on = false;
// timer 1 state
bool t1_active;
uint16_t t1_counter;
uint32_t t1_timer_id = 0;
uint64_t t1_start_time = 0;
// timer 2 state
bool t2_active;
uint16_t t2_counter;
uint32_t t2_timer_id = 0;
uint64_t t2_start_time = 0;