/*
* Function: SendAndCut
* Description: Send the entirety of buffer and cut if the whole frame hasn't been sent.
*/
public static void SendAndCut(CircularFrameBuffer cfb)
{
var status = 0U;
if (cfb.CanPop(true))
{
Emu.Interrupts = 1;
}
else
{
Emu.Interrupts = 2;
}
Emu.debug_reg = cfb.Count;
while (status <= 1)
{
status = SendOne(cfb, false, true, false);
}
if (status == 2)
{
Reset();
}
else if (status == 3)
{
CutThrough();
}
}
/*
* Function: SendOne
* Description: Send a single segment of the buffered ethernet frame.
*/
public static uint SendOne(CircularFrameBuffer cfb, bool stop = true, bool movepeek = false,
bool checkready = true)
{
if (cfb.CanPop(movepeek) && (!checkready || Emu.m_axis_tready))
{
Emu.Status = 11;
SetData(cfb, movepeek, true);
var done = cfb.PopData.Tlast;
Emu.Status = 3;
Kiwi.Pause();
if (stop)
{
Reset();
}
if (done)
{
Emu.PktOut++;
Emu.Status = 12;
return(2U);
}
Emu.Status = 13;
return(0U);
}
Emu.Status = 14;
if (stop)
{
Reset();
}
return(3U);
}
/*
* Function: SendWithFCS
* Description: Sends the whole buffered frame, appending the FCS at the end.
*/
public static bool SendWithFCS(CircularFrameBuffer cfb, crc32 crc)
{
bool cont = true;
crc.Reset();
while (cont)
{
if (cfb.CanPop(true))
{
if (SetData(cfb, true, false, false))
{
crc.CRC_Compute(cfb.PopData);
cont = !cfb.PopData.Tlast;
}
;
if (cfb.PopData.Tlast)
{
var size = (int)NumSize(cfb.PopData.Tkeep);
if (size >= 24)
{
Emu.m_axis_tdata_3 = cfb.PopData.Tdata3 | (crc.CRC_LittleEndian() << ((size % 8) * 8));
}
else if (size > 20)
{
Emu.m_axis_tdata_3 = cfb.PopData.Tdata3 | (crc.CRC_LittleEndian() >> ((24 - size) * 8));
Emu.m_axis_tdata_2 = cfb.PopData.Tdata2 | (crc.CRC_LittleEndian() << ((size % 8) * 8));
}
else if (size >= 16)
{
Emu.m_axis_tdata_2 = cfb.PopData.Tdata2 | (crc.CRC_LittleEndian() >> ((size % 8) * 8));
}
else if (size > 12)
{
Emu.m_axis_tdata_2 = cfb.PopData.Tdata2 | (crc.CRC_LittleEndian() >> ((16 - size) * 8));
Emu.m_axis_tdata_1 = cfb.PopData.Tdata1 | (crc.CRC_LittleEndian() << ((size % 8) * 8));
}
else if (size >= 8)
{
Emu.m_axis_tdata_1 = cfb.PopData.Tdata1 | (crc.CRC_LittleEndian() << ((size % 8) * 8));
}
else if (size > 4)
{
Emu.m_axis_tdata_1 = cfb.PopData.Tdata1 | (crc.CRC_LittleEndian() >> ((8 - size) * 8));
Emu.m_axis_tdata_0 = cfb.PopData.Tdata0 | (crc.CRC_LittleEndian() << (size * 8));
}
else
{
Emu.m_axis_tdata_0 = cfb.PopData.Tdata0 | (crc.CRC_LittleEndian() << (size * 8));
}
Emu.PktIn = (uint)size;
Emu.m_axis_tkeep = Emu.m_axis_tkeep << 4 | 0xF;
//Console.WriteLine($"{size}:{crc.CRC_LittleEndian():X16}");
}
Emu.m_axis_tvalid = true;
WaitReady();
//System.Console.WriteLine($"{Emu.m_axis_tdata_0:X16},\n{Emu.m_axis_tdata_1:X16},\n{Emu.m_axis_tdata_2:X16},\n{Emu.m_axis_tdata_3:X16}");
//Kiwi.Pause();
}
else
{
Reset();
return(false);
}
}
Reset();
Emu.PktOut++;
return(true);
}