linux-kernel - Re: [PATCH 1/2] drm/msm: sync generated headers

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Message-ID: <CAF6AEGu3_qYWGKVmc2VrMVzU35svgxTEVKAMpNUZfy_jZg3euQ@mail.gmail.com>
Date:   Sat, 11 Jul 2020 07:49:52 -0700
From:   Rob Clark <robdclark@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     "open list:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Rob Clark <robdclark@...omium.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jonathan Marek <jonathan@...ek.ca>,
        Sharat Masetty <smasetty@...eaurora.org>,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        Harigovindan P <harigovi@...eaurora.org>,
        Sam Ravnborg <sam@...nborg.org>,
        zhengbin <zhengbin13@...wei.com>,
        "open list:DRM DRIVER FOR MSM ADRENO GPU" 
        <linux-arm-msm@...r.kernel.org>,
        "open list:DRM DRIVER FOR MSM ADRENO GPU" 
        <freedreno@...ts.freedesktop.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] drm/msm: sync generated headers

On Sat, Jul 11, 2020 at 4:49 AM Linus Walleij <linus.walleij@...aro.org> wrote:
>
> On Tue, Jul 7, 2020 at 10:36 PM Rob Clark <robdclark@...il.com> wrote:
>
> > From: Rob Clark <robdclark@...omium.org>
> >
> > We haven't sync'd for a while.. pull in updates to get definitions for
> > some fields in pkt7 payloads.
> >
> > Signed-off-by: Rob Clark <robdclark@...omium.org>
>
> Out of curiosity : where are the syncs coming from? Mesa?

sometimes indirectly.. but they are generated from:

  https://github.com/freedreno/envytools/tree/master/rnndb

The cmdstream and devcoredump decoding tools (which also use the xml)
are in the envytools tree as well.

We have a copy of the gpu side xml in mesa, where we generate the
headers at build time, but I guess doing that on the kernel side would
introduce some build time dependencies that others wouldn't
appreciate:

  https://gitlab.freedesktop.org/mesa/mesa/-/tree/master/src/freedreno/registers

Mesa already depends a lot on py generated headers, tables, etc.

BR,
-R

> Yours,
> Linus Walleij