Trace performance monitoring and diagnostics monitor(TPDM)

Author:

Jinlong Mao <quic_jinlmao@quicinc.com>

Date:

January 2023

Hardware Description

TPDM - The trace performance monitoring and diagnostics monitor or TPDM in short serves as data collection component for various dataset types. The primary use case of the TPDM is to collect data from different data sources and send it to a TPDA for packetization, timestamping and funneling.

Sysfs files and directories

Root: /sys/bus/coresight/devices/tpdm<N>

File:

enable_source (RW)

Notes:

  • > 0 : enable the datasets of TPDM.

  • = 0 : disable the datasets of TPDM.

Syntax:

echo 1 > enable_source

File:

integration_test (wo)

Notes:

Integration test will generate test data for tpdm.

Syntax:

echo value > integration_test

value - 1 or 2.