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Pad: Implement RX/TX IRQs

This commit is contained in:
Stenzek 2024-10-21 00:38:05 +10:00
parent 6e1d8c5213
commit 32e62725dd
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1 changed files with 14 additions and 5 deletions
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19
src/core/pad.cpp
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@ -107,6 +107,7 @@ static void DoTransfer(TickCount ticks_late);
static void DoACK();
static void EndTransfer();
static void ResetDeviceTransferState();
static void TriggerIRQ(const char* type);
static bool DoStateController(StateWrapper& sw, u32 i);
static bool DoStateMemcard(StateWrapper& sw, u32 i, bool is_memory_state);
@ -550,6 +551,13 @@ Multitap* Pad::GetMultitap(u32 slot)
return &s_state.multitaps[slot];
}
void Pad::TriggerIRQ(const char* type)
{
DEBUG_LOG("Triggering {} interrupt", type);
s_state.JOY_STAT.INTR = true;
InterruptController::SetLineState(InterruptController::IRQ::PAD, true);
}
u32 Pad::ReadRegister(u32 offset)
{
switch (offset)
@ -607,6 +615,9 @@ void Pad::WriteRegister(u32 offset, u32 value)
s_state.transmit_buffer = Truncate8(value);
s_state.transmit_buffer_full = true;
if (s_state.JOY_CTRL.TXINTEN)
TriggerIRQ("TX");
if (!IsTransmitting() && CanTransfer())
BeginTransfer();
@ -842,6 +853,8 @@ void Pad::DoTransfer(TickCount ticks_late)
s_state.receive_buffer = data_in;
s_state.receive_buffer_full = true;
if (s_state.JOY_CTRL.RXINTEN)
TriggerIRQ("TX");
// device no longer active?
if (!ack)
@ -869,11 +882,7 @@ void Pad::DoACK()
s_state.JOY_STAT.ACKINPUT = true;
if (s_state.JOY_CTRL.ACKINTEN)
{
DEBUG_LOG("Triggering ACK interrupt");
s_state.JOY_STAT.INTR = true;
InterruptController::SetLineState(InterruptController::IRQ::PAD, true);
}
TriggerIRQ("ACK");
EndTransfer();
UpdateJoyStat();