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CDROM: Send IRQ1 for triple buffered sectors 

Fixes hangs in loading in Eliminator and Colony Wars - Vengeance.
This commit is contained in:
Connor McLaughlin 2021-04-19 15:14:49 +10:00
parent 310e1830a0
commit 62360d088a
1 changed files with 21 additions and 5 deletions
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26
src/core/cdrom.cpp
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@ -2007,9 +2007,10 @@ void CDROM::ProcessDataSectorHeader(const u8* raw_sector)
void CDROM::ProcessDataSector(const u8* raw_sector, const CDImage::SubChannelQ& subq)
{
const u32 sb_num = (m_current_write_sector_buffer + 1) % NUM_SECTOR_BUFFERS;
Log_DevPrintf("Read sector %u: mode %u submode 0x%02X into buffer %u", m_current_lba,
ZeroExtend32(m_last_sector_header.sector_mode), ZeroExtend32(m_last_sector_subheader.submode.bits),
m_current_write_sector_buffer);
sb_num);
// The reading bit shouldn't be set until the first sector is processed.
m_secondary_status.reading = true;
@ -2026,7 +2027,6 @@ void CDROM::ProcessDataSector(const u8* raw_sector, const CDImage::SubChannelQ&
}
// TODO: How does XA relate to this buffering?
const u32 sb_num = (m_current_write_sector_buffer + 1) % NUM_SECTOR_BUFFERS;
SectorBuffer* sb = &m_sector_buffers[sb_num];
if (sb->size > 0)
{
@ -2064,8 +2064,17 @@ void CDROM::ProcessDataSector(const u8* raw_sector, const CDImage::SubChannelQ&
ClearAsyncInterrupt();
}
m_async_response_fifo.Push(m_secondary_status.bits);
SetAsyncInterrupt(Interrupt::DataReady);
if (HasPendingInterrupt())
{
const u32 sectors_missed = (m_current_write_sector_buffer - m_current_read_sector_buffer) % NUM_SECTOR_BUFFERS;
if (sectors_missed > 1)
Log_WarningPrintf("Interrupt not processed in time, missed %u sectors", sectors_missed - 1);
}
else
{
m_async_response_fifo.Push(m_secondary_status.bits);
SetAsyncInterrupt(Interrupt::DataReady);
}
}
static std::array<std::array<s16, 29>, 7> s_zigzag_table = {
@ -2372,7 +2381,14 @@ void CDROM::LoadDataFIFO()
}
Log_DebugPrintf("Loaded %u bytes to data FIFO from buffer %u", m_data_fifo.GetSize(), m_current_read_sector_buffer);
m_current_read_sector_buffer = m_current_write_sector_buffer;
SectorBuffer& next_sb = m_sector_buffers[m_current_write_sector_buffer];
if (next_sb.size > 0)
{
Log_DevPrintf("Sending additional INT1 for missed sector in buffer %u", m_current_write_sector_buffer);
m_async_response_fifo.Push(m_secondary_status.bits);
SetAsyncInterrupt(Interrupt::DataReady);
}
}
void CDROM::ClearSectorBuffers()