linux-kernel - Re: [PATCH v5 00/19] coresight: Support for ARM Coresight SoC-600

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Date:   Mon, 24 Jul 2017 11:15:38 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Suzuki K Poulose <suzuki.poulose@....com>
Cc:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mike Leach <mike.leach@...aro.org>
Subject: Re: [PATCH v5 00/19] coresight: Support for ARM Coresight SoC-600

On 20 July 2017 at 04:17, Suzuki K Poulose <suzuki.poulose@....com> wrote:
> This series adds support for ARM Coresight SoC-600 IP, which implements
> Coresight V3 architecture. It also does some clean up of the replicator
> driver namings used in the driver to prevent confusions to the user.
>
> The SoC-600 comes with an improved TMC which supports new features,
> including Save-Restore, Software FIFO2 mode (for streaming the trace
> data over functional I/O like USB/PCI), and other changes AXICTL settings.
>
> This series supports Save-Restore feature of the new ETR by reusing
> the driver to perform additional setups required in case we are dealing
> with an IP which supports it. Towards this we keep track of the
> capabilities of the given TMC ETR. Some of the features are advertised
> via DEVID register (address width, scatter gather support), while some
> are not (save-restore). So we attach a static capability mask with the
> device PID for the unadvertised features and detect the rest at device
> probe. The driver now detects the AXI address width if advertised via
> DEVID.
>
> Tested on Juno (with Coresight SoC 400) and an FPGA based system
> for SoC 600.

Good day,

Other than the two remarks I'm good with this set.  Since going for
another iteration is time consuming for both of us I can make the
modifications on my side - just let me know.

Thanks,
Mathieu

>
> Applies on Mathieu's coresight/next tree
>
> Changes since V4:
>  - Rebased to coresight/next to avoid conflicts
>  - Added a new set of macros for plain register access, no functional
>    changes. (Patch 7)
>
> Changes since V3:
>  - Rebased to v4.13-rc1
>  - Rename AxCACHE => AXCACHE, suggested by Mathieu
>  - Fix checkpatch warnings against space in comments.
>  - Remove device initialisation message for replicator.
>  - Add Reviewed-by tags for the DTS changes.
>
> Suzuki K Poulose (19):
>   coresight replicator: Cleanup programmable replicator naming
>   arm64: juno: dts: Use the new coresight replicator string
>   arm: qcom-msm8974: dts: Update coresight replicator
>   arm64: qcom-msm8916: dts: Update coresight replicator
>   coresight: Extend the PIDR mask to cover relevant bits in PIDR2
>   coresight: Add support for reading 64bit registers
>   coresight: Use the new helper for defining registers
>   coresight tmc: Add helpers for accessing 64bit registers
>   coresight tmc: Expose DBA and AXICTL
>   coresight replicator: Expose replicator management registers
>   coresight tmc: Handle configuration types properly
>   coresight tmc etr: Add capabilitiy information
>   coresight tmc: Detect support for scatter gather
>   coresight tmc etr: Detect address width at runtime
>   coresight tmc etr: Cleanup AXICTL register handling
>   coresigh tmc etr: Setup AXI cache encoding for read transfers
>   coresight tmc: Support for save-restore in ETR
>   coresight tmc: Add support for Coresight SoC 600 TMC
>   coresight: Add support for Coresight SoC 600 components
>
>  .../devicetree/bindings/arm/coresight.txt          |   4 +-
>  arch/arm/boot/dts/qcom-msm8974.dtsi                |   2 +-
>  arch/arm64/boot/dts/arm/juno-base.dtsi             |   2 +-
>  arch/arm64/boot/dts/qcom/msm8916.dtsi              |   2 +-
>  drivers/hwtracing/coresight/Kconfig                |  10 +-
>  drivers/hwtracing/coresight/Makefile               |   2 +-
>  .../coresight/coresight-dynamic-replicator.c       | 222 +++++++++++++++++++++
>  drivers/hwtracing/coresight/coresight-etb10.c      |  26 +--
>  .../hwtracing/coresight/coresight-etm3x-sysfs.c    |  26 +--
>  drivers/hwtracing/coresight/coresight-etm3x.c      |  24 +--
>  .../hwtracing/coresight/coresight-etm4x-sysfs.c    |  24 +--
>  drivers/hwtracing/coresight/coresight-funnel.c     |   9 +-
>  drivers/hwtracing/coresight/coresight-priv.h       |  37 +++-
>  .../coresight/coresight-replicator-qcom.c          | 196 ------------------
>  drivers/hwtracing/coresight/coresight-stm.c        |  38 ++--
>  drivers/hwtracing/coresight/coresight-tmc-etf.c    |   8 +-
>  drivers/hwtracing/coresight/coresight-tmc-etr.c    |  37 ++--
>  drivers/hwtracing/coresight/coresight-tmc.c        | 110 +++++++---
>  drivers/hwtracing/coresight/coresight-tmc.h        |  86 +++++++-
>  drivers/hwtracing/coresight/coresight-tpiu.c       |   9 +-
>  20 files changed, 548 insertions(+), 326 deletions(-)
>  create mode 100644 drivers/hwtracing/coresight/coresight-dynamic-replicator.c
>  delete mode 100644 drivers/hwtracing/coresight/coresight-replicator-qcom.c
>
> --
> 2.7.5
>