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CDROM: Don't persist seek error bit in secondary status

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Fixes Viewpoint (#56).
This commit is contained in:
Connor McLaughlin 2020-03-08 15:53:53 +10:00
parent 2249b873ff
commit 4eeaa38ccd
2 changed files with 35 additions and 27 deletions
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42
src/core/cdrom.cpp
View file

@ -461,16 +461,16 @@ void CDROM::SendACKAndStat()
SetInterrupt(Interrupt::ACK);
}
void CDROM::SendErrorResponse(u8 reason /*= 0x80*/)
void CDROM::SendErrorResponse(u8 stat_bits /* = STAT_ERROR */, u8 reason /* = 0x80 */)
{
m_response_fifo.Push(m_secondary_status.bits | 0x01);
m_response_fifo.Push(m_secondary_status.bits | stat_bits);
m_response_fifo.Push(reason);
SetInterrupt(Interrupt::Error);
}
void CDROM::SendAsyncErrorResponse(u8 reason /*= 0x80*/)
void CDROM::SendAsyncErrorResponse(u8 stat_bits /* = STAT_ERROR */, u8 reason /* = 0x80 */)
{
m_async_response_fifo.Push(m_secondary_status.bits | 0x01);
m_async_response_fifo.Push(m_secondary_status.bits | stat_bits);
m_async_response_fifo.Push(reason);
SetAsyncInterrupt(Interrupt::Error);
}
@ -497,9 +497,9 @@ void CDROM::UpdateInterruptRequest()
TickCount CDROM::GetAckDelayForCommand() const
{
const u32 default_ack_delay = 3000;
const u32 default_ack_delay = 60000;
if (m_command == Command::Init || m_command == Command::ReadTOC)
return 60000;
return 3000;
else
return default_ack_delay;
}
@ -586,7 +586,7 @@ void CDROM::ExecuteCommand()
Log_DebugPrintf("CDROM GetID command");
if (!HasMedia())
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else
{
@ -605,7 +605,7 @@ void CDROM::ExecuteCommand()
Log_DebugPrintf("CDROM ReadTOC command");
if (!HasMedia())
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else
{
@ -663,7 +663,7 @@ void CDROM::ExecuteCommand()
Log_DebugPrintf("CDROM %s command", logical ? "SeekL" : "SeekP");
if (!HasMedia())
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else
{
@ -682,11 +682,11 @@ void CDROM::ExecuteCommand()
if (!HasMedia() || m_drive_state == DriveState::Reading || m_drive_state == DriveState::Playing)
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else if (session == 0)
{
SendErrorResponse(0x10);
SendErrorResponse(STAT_ERROR, 0x10);
}
else
{
@ -707,7 +707,7 @@ void CDROM::ExecuteCommand()
Log_DebugPrintf("CDROM read command");
if (!HasMedia())
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else
{
@ -726,7 +726,7 @@ void CDROM::ExecuteCommand()
if (!HasMedia())
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else
{
@ -787,7 +787,7 @@ void CDROM::ExecuteCommand()
Log_DebugPrintf("CDROM motor on command");
if (m_secondary_status.motor_on)
{
SendErrorResponse(0x20);
SendErrorResponse(STAT_ERROR, 0x20);
}
else
{
@ -827,7 +827,7 @@ void CDROM::ExecuteCommand()
m_last_sector_header.second, m_last_sector_header.frame);
if (!m_secondary_status.header_valid)
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else
{
@ -871,7 +871,7 @@ void CDROM::ExecuteCommand()
}
else
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
EndCommand();
@ -886,11 +886,11 @@ void CDROM::ExecuteCommand()
if (!HasMedia())
{
SendErrorResponse(0x80);
SendErrorResponse(STAT_ERROR, 0x80);
}
else if (track > m_reader.GetMedia()->GetTrackCount())
{
SendErrorResponse(0x10);
SendErrorResponse(STAT_ERROR, 0x10);
}
else
{
@ -1204,8 +1204,7 @@ void CDROM::DoSeekComplete(TickCount ticks_late)
CDImage::Position pos(CDImage::Position::FromLBA(m_last_requested_sector));
Log_WarningPrintf("%s seek to [%02u:%02u:%02u] failed", logical ? "Logical" : "Physical", pos.minute, pos.second,
pos.frame);
m_secondary_status.seek_error = true;
SendAsyncErrorResponse(0x80);
SendAsyncErrorResponse(STAT_SEEK_ERROR, 0x04);
}
m_setloc_pending = false;
@ -1260,8 +1259,7 @@ void CDROM::DoChangeSessionComplete()
else
{
// we don't emulate multisession discs.. for now
m_secondary_status.seek_error = true;
SendAsyncErrorResponse(0x40);
SendAsyncErrorResponse(STAT_SEEK_ERROR, 0x40);
}
}

20
src/core/cdrom.h
View file

@ -136,6 +136,18 @@ private:
BitField<u8, bool, 7, 1> BUSYSTS;
};
enum StatBits : u8
{
STAT_ERROR = (1 << 0),
STAT_MOTOR_ON = (1 << 1),
STAT_SEEK_ERROR = (1 << 2),
STAT_ID_ERROR = (1 << 3),
STAT_SHELL_OPEN = (1 << 4),
STAT_HEADER_VALID = (1 << 5),
STAT_SEEKING = (1 << 6),
STAT_PLAYING_CDDA = (1 << 7)
};
union SecondaryStatusRegister
{
u8 bits;
@ -151,9 +163,7 @@ private:
/// Clears the CDDA/seeking/header valid bits.
ALWAYS_INLINE void ClearActiveBits()
{
header_valid = false;
seeking = false;
playing_cdda = false;
bits &= ~(STAT_HEADER_VALID | STAT_SEEKING | STAT_PLAYING_CDDA);
}
};
@ -189,8 +199,8 @@ private:
void ClearAsyncInterrupt();
void DeliverAsyncInterrupt();
void SendACKAndStat();
void SendErrorResponse(u8 reason = 0x80);
void SendAsyncErrorResponse(u8 reason = 0x80);
void SendErrorResponse(u8 stat_bits = STAT_ERROR, u8 reason = 0x80);
void SendAsyncErrorResponse(u8 stat_bits = STAT_ERROR, u8 reason = 0x80);
void UpdateStatusRegister();
void UpdateInterruptRequest();