linux-kernel - Re: [PATCH v5 0/6] Add support to print sub-block registers in dpu hw catalog

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Date:   Fri, 7 Jul 2023 18:59:23 -0700
From:   Abhinav Kumar <quic_abhinavk@...cinc.com>
To:     Ryan McCann <quic_rmccann@...cinc.com>,
        Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
CC:     Rob Clark <robdclark@...omium.org>,
        <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <quic_jesszhan@...cinc.com>
Subject: Re: [PATCH v5 0/6] Add support to print sub-block registers in dpu hw
 catalog



On 7/7/2023 6:24 PM, Ryan McCann wrote:
> The purpose of this patch series is to add support to print the registers
> of sub-blocks in the DPU hardware catalog and fix the order in which all
> hardware blocks are dumped for a device core dump. This involves:
> 

Nice work on completing this feature and working patiently through all 
the comments !


> 1. Changing data structure from stack to queue to fix the printing order
> of the device core dump.
> 
> 2. Removing redundant suffix of sub-block names.
> 
> 3. Removing redundant prefix of sub-block names.
> 
> 4. Eliminating unused variable from relevant macros.
> 
> 5. Defining names for sub-blocks that have not yet been defined.
> 
> 6. Implementing wrapper function that prints the registers of sub-blocks
> when there is a need.
> 
> Sample Output of the sspp_0 block and its sub-blocks for devcore dump:
> ======sspp_0======
> ...registers
> ...
> ====sspp_0_scaler====
> ...
> ...
> ====sspp_0_csc====
> ...
> ...
> ====next_block====
> ...
> 
> This series depends on https://patchwork.freedesktop.org/series/119776/.
> 
> ---
> Changes in v5:
> - Fixed indentation in refactor main block printing patch
> - Fixed formatting issues to satisfy checkpatch
> - Instead of passing 0 for DSC block, used actual length thanks to https://patchwork.freedesktop.org/series/119776/
> - Link to v4: https://lore.kernel.org/r/20230622-devcoredump_patch-v4-0-e304ddbe9648@quicinc.com
> 
> Changes in v4:
> - Added review tags
> - Link to v3: https://lore.kernel.org/r/20230622-devcoredump_patch-v3-0-83601b72eb67@quicinc.com
> 
> Changes in v3:
> - Split sub-block changes and main block changes into two commits
> - Corrected typo in comment located in DSC for loop block
> - Eliminated variables mmio and base
> - Dropped unnecessary "%s"
> - Link to v2: https://lore.kernel.org/r/20230622-devcoredump_patch-v2-0-9e90a87d393f@quicinc.com
> 
> Changes in v2:
> - Changed spelling "sub block" to "sub-block" or "sblk".
> - Capitalized DPU.
> - Eliminated multiplexer/wrapper function. Inlined instead.
> - Changed if statements from feature checks to length checks.
> - Squashed prefix and suffix patch into one.
> - Link to v1: https://lore.kernel.org/r/20230622-devcoredump_patch-v1-0-3b2cdcc6a576@quicinc.com
> 
> ---
> Ryan McCann (6):
>        drm/msm: Update dev core dump to not print backwards
>        drm/msm/dpu: Drop unused num argument from relevant macros
>        drm/msm/dpu: Define names for unnamed sblks
>        drm/msm/dpu: Remove redundant prefix/suffix in name of sub-blocks
>        drm/msm/dpu: Refactor printing of main blocks in device core dump
>        drm/msm/dpu: Update dev core dump to dump registers of sub-blocks
> 
>   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c    | 90 +++++++++++------------
>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c           | 74 +++++++++++++++----
>   drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c |  2 +-
>   3 files changed, 104 insertions(+), 62 deletions(-)
> ---
> base-commit: a92b5625851098af521cd92e4c518429b661c8f4
> change-id: 20230622-devcoredump_patch-df7e8f6fd632
> 
> Best regards,