public static void mdiodump(int num_packets)
{
// Get the size of the timing information for a transaction of
// max_bytes length
int timing_size =
BeagleApi.bg_bit_timing_size(BeagleProtocol.BG_PROTOCOL_MDIO, 0);
uint[] timing = new uint[timing_size];
// Get the current sampling rate
int samplerate_khz = BeagleApi.bg_samplerate(beagle, 0);
// Start the capture
if (BeagleApi.bg_enable(beagle, BeagleProtocol.BG_PROTOCOL_MDIO) !=
(int)BeagleStatus.BG_OK)
{
Console.Write("error: could not enable MDIO capture; " +
"exiting...\n");
Environment.Exit(1);
}
Console.Write("index,time(ns),MDIO,status,<clause:opcode>," +
"<addr1>,<addr2>,data\n");
Console.Out.Flush();
// Capture and print each transaction
int i;
for (i = 0; i < num_packets || num_packets == 0; ++i)
{
uint packet = 0;
uint status = 0;
ulong time_sop = 0, time_sop_ns = 0;
ulong time_duration = 0;
uint time_dataoffset = 0;
// Read transaction with bit timing data
int count = BeagleApi.bg_mdio_read_bit_timing(
beagle, ref status, ref time_sop,
ref time_duration, ref time_dataoffset,
ref packet, timing_size, timing);
// Translate timestamp to ns
time_sop_ns = TIMESTAMP_TO_NS(time_sop, samplerate_khz);
// Check for errors
if (count < 0)
{
Console.Write("{0,4:d},{1,13:d},MDIO,( error={2:d},",
i, time_sop_ns, count);
print_general_status(status);
print_mdio_status(status);
Console.Write(")\n");
Console.Out.Flush();
continue;
}
// Parse the MDIO frame
byte clause = 0;
byte opcode = 0;
byte addr1 = 0;
byte addr2 = 0;
ushort data = 0;
int ret = BeagleApi.bg_mdio_parse(packet, ref clause,
ref opcode, ref addr1, ref addr2, ref data);
Console.Write("{0:d},{1:d},MDIO,(", i, time_sop_ns);
print_general_status(status);
if ((status & BeagleApi.BG_READ_TIMEOUT) == 0)
{
print_mdio_status((uint)ret);
}
Console.Write(")");
// If zero data captured, continue
if (count == 0)
{
Console.Write("\n");
Console.Out.Flush();
continue;
}
// Print the clause and opcode
Console.Write(",");
if ((status & BeagleApi.BG_READ_ERR_MIDDLE_OF_PACKET) == 0)
{
if (clause == (byte)BeagleMdioClause.BG_MDIO_CLAUSE_22)
{
Console.Write("<22:");
switch (opcode)
{
case BeagleApi.BG_MDIO_OPCODE22_WRITE:
Console.Write("W");
break;
case BeagleApi.BG_MDIO_OPCODE22_READ:
Console.Write("R");
break;
case BeagleApi.BG_MDIO_OPCODE22_ERROR:
Console.Write("?");
break;
}
}
else if (clause == (byte)BeagleMdioClause.BG_MDIO_CLAUSE_45)
{
Console.Write("<45:");
switch (opcode)
{
case BeagleApi.BG_MDIO_OPCODE45_ADDR:
Console.Write("A");
break;
case BeagleApi.BG_MDIO_OPCODE45_WRITE:
Console.Write("W");
break;
case BeagleApi.BG_MDIO_OPCODE45_READ_POSTINC:
Console.Write("RI");
break;
case BeagleApi.BG_MDIO_OPCODE45_READ:
Console.Write("R");
break;
}
}
else
{
Console.Write("<?:?");
}
// Recall that for Clause 22:
// PHY Addr = addr1, Reg Addr = addr2
// and for Clause 45:
// Port Addr = addr1, Dev Addr = addr2
Console.Write(">,<{0:X2}>,<{1:X2}>,{2:X4}\n",
addr1, addr2, data);
}
Console.Out.Flush();
}
// Stop the capture
BeagleApi.bg_disable(beagle);
}