Using channel_logs in systemc to print a log of all transactions on the Match lib connections

[shaddad]

I am using the channel_logs to print a log of all transactions on Match lib connections like this:

  channel_logs logs;
  if (plusargs::test("LOG_CHANNELS")) {
    // Create log with record of Connections channels traffic
    INFO("Channel logs: channel_logs*.log");
    logs.enable("channel_logs", true);
    logs.log_hierarchy(*tb_inst);
  }

 

However, the generated log does not show the values on some AXI bus fields such as axim_aruser and axim_awuser.

How do I make the log show this information? 

 

[StuartSwan]

If you run this example:

https://github.com/Stuart-Swan/Matchlib-Examples-Kit-For-Accellera-Synthesis-WG/tree/master/matchlib_examples/examples/08_dma

The log file will have:

8 | id{0x0} addr{0x0} burst{} len{0x0} size{} cache{} auser{}  | 6 ns
9 | data{0x1000} last{0x1} wstrb{0x0FF} wuser{}  | 6 ns
10 | id{0x0} resp{0x0} buser{}  | 7 ns

The auser{} has no data inside the curly braces. That means that the bitwidth of that field has been configured to be zero.

If you really want the bitwidth of that field to be non-zero, you'll need to create a custom AXI4 configuration class that makes those fields have non-zero widths.

There is an example of doing so in this example:

https://github.com/Stuart-Swan/Matchlib-Examples-Kit-For-Accellera-Synthesis-WG/blob/master/matchlib_examples/examples/55_mixed_axi/mixed_dma.h

 

[shaddad]

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