I have started to review this set. It is substantial in size and as such will take me several days, most likely weeks.
Did you run checkpatch before sending this set out? If so, any reason why there are still errors?
Thanks, Mathieu
On Thu, Oct 21, 2021 at 03:38:46PM +0800, Tao Zhang wrote:
This series adds support for the trace performance monitoring and diagnostics hardware (TPDM and TPDA). It is composed of two major elements. a) Changes for original coresight framework to support for TPDM and TPDA. b) Add driver code for TPDM and TPDA.
Introduction of changes for original coresight framework a) Support TPDM as new coresight source. Since only STM and ETM are supported as coresight source originally. TPDM is a newly added coresight source. We need to change the original way of saving coresight path to support more types source for coresight driver. The following patch is to add support more coresight sources. coresight: add support to enable more coresight paths
b) To support multi-port input and multi-port output for funnels In some cases, different TPDM hardware will be connected to the same funnel, but eventually they need to be linked to different TPDAs or funnels. This requires funnel to support multi-port input and multi-port output, and can specify which input port corresponds to which output port. Use property ?label? in the funnel?s configuration to point out from which input port to which output port. The following patch is to support multi-port input and multi-port output for funnels. coresight: funnel: add support for multiple output ports
Introduction of TPDM and TPDA TPDM - The trace performance monitoring and diagnostics monitor or TPDM in short serves as data collection component for various dataset types specified in the QPMDA(Qualcomm performance monitoring and diagnostics architecture) spec. 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. The following patch is to add driver for TPDM. Coresight: Add driver to support Coresight device TPDM Coresight: Enable BC and GPR for TPDM driver Coresight: Add interface for TPDM BC subunit Coresight: Enable and add interface for TPDM TC subunit Coresight: Enable DSB subunit for TPDM Coresight: Enable CMB subunit for TPDM
TPDA - The trace performance monitoring and diagnostics aggregator or TPDA in short serves as an arbitration and packetization engine for the performance monitoring and diagnostics network as specified in the QPMDA (Qualcomm performance monitoring and diagnostics architecture) specification. The primary use case of the TPDA is to provide packetization, funneling and timestamping of Monitor data as specified in the QPMDA specification. The following patch is to add driver for TPDA. coresight: Add driver to support Coresight device TPDA
The last patch of this series is a device tree modification, which add the TPDM and TPDA configuration to device tree for validating. ARM: dts: msm: Add TPDA and TPDM configuration to device
Once this series patches are applied properly, the tpdm and tpda nodes should be observed at the coresight path /sys/bus/coresight/devices e.g. /sys/bus/coresight/devices # ls -l | grep tpd tpda0 -> ../../../devices/platform/soc@0/6004000.tpda/tpda0 tpdm0 -> ../../../devices/platform/soc@0/6844000.lpass.tpdm/tpdm0
We can use the commands are similar to the below to validate TPDMs. Enable coresight sink first. echo 1 > /sys/bus/coresight/devices/tpdm0/enable_source echo 1 > /sys/bus/coresight/devices/tpdm0/integration_test echo 2 > /sys/bus/coresight/devices/tpdm0/integration_test The test data will be collected in the coresight sink which is enabled.
This series applies to coresight/next https://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git?h=next
Tao Zhang (10): coresight: add support to enable more coresight paths coresight: funnel: add support for multiple output ports Coresight: Add driver to support Coresight device TPDM Coresight: Enable BC and GPR for TPDM driver Coresight: Add interface for TPDM BC subunit Coresight: Enable and add interface for TPDM TC subunit Coresight: Enable DSB subunit for TPDM Coresight: Enable CMB subunit for TPDM coresight: Add driver to support Coresight device TPDA ARM: dts: msm: Add TPDA and TPDM support to DTS for RB5
.../bindings/arm/coresight-tpda.yaml | 169 + .../bindings/arm/coresight-tpdm.yaml | 86 + MAINTAINERS | 6 + arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 439 ++ drivers/hwtracing/coresight/Kconfig | 18 + drivers/hwtracing/coresight/Makefile | 2 + drivers/hwtracing/coresight/coresight-core.c | 175 +- .../hwtracing/coresight/coresight-platform.c | 8 + drivers/hwtracing/coresight/coresight-tpda.c | 828 ++++ drivers/hwtracing/coresight/coresight-tpdm.c | 4253 +++++++++++++++++ include/linux/coresight.h | 2 + 11 files changed, 5928 insertions(+), 58 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/coresight-tpda.yaml create mode 100644 Documentation/devicetree/bindings/arm/coresight-tpdm.yaml create mode 100644 drivers/hwtracing/coresight/coresight-tpda.c create mode 100644 drivers/hwtracing/coresight/coresight-tpdm.c
-- 2.17.1