[PATCH 10/12] drm/msm/adreno: Add helper for formating chip-id

[Rob Clark]

On Thu, Jul 6, 2023 at 4:36 PM Konrad Dybcio <konrad.dybcio at linaro.org> wrote:
>
> On 6.07.2023 23:10, Rob Clark wrote:
> > From: Rob Clark <robdclark at chromium.org>
> >
> > This is used in a few places, including one that is parsed by userspace
> > tools.  So let's standardize it a bit better.
> >
> > Signed-off-by: Rob Clark <robdclark at chromium.org>
> > ---
> Userspace parsed this weird string instead of the hex-based chipid?
>
> weird^2

AFAICT it is just crashdec (the creatively named tool for parsing gpu
devcore dumps) which parses using "%u.%u.%u.%u"..  I suppose one
_could_ make the argument that, since userspace doesn't yet support
any device where "%x.%x.%x.%x" parsing would be different, we could
get away with switching to hex without it being an ABI break..

BR,
-R

> Konrad
> >  drivers/gpu/drm/msm/adreno/adreno_device.c |  8 +++-----
> >  drivers/gpu/drm/msm/adreno/adreno_gpu.c    | 19 ++++++++-----------
> >  drivers/gpu/drm/msm/adreno/adreno_gpu.h    |  6 ++++++
> >  3 files changed, 17 insertions(+), 16 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > index dcd6363ac7b0..fd2e183bce60 100644
> > --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> > +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> > @@ -661,14 +661,12 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
> >       info = adreno_info(config.rev);
> >
> >       if (!info) {
> > -             dev_warn(drm->dev, "Unknown GPU revision: %u.%u.%u.%u\n",
> > -                     config.rev.core, config.rev.major,
> > -                     config.rev.minor, config.rev.patchid);
> > +             dev_warn(drm->dev, "Unknown GPU revision: %"ADRENO_CHIPID_FMT"\n",
> > +                     ADRENO_CHIPID_ARGS(config.rev));
> >               return -ENXIO;
> >       }
> >
> > -     DBG("Found GPU: %u.%u.%u.%u", config.rev.core, config.rev.major,
> > -             config.rev.minor, config.rev.patchid);
> > +     DBG("Found GPU: %"ADRENO_CHIPID_FMT, ADRENO_CHIPID_ARGS(config.rev));
> >
> >       priv->is_a2xx = info->family < ADRENO_3XX;
> >       priv->has_cached_coherent =
> > diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> > index 75ff7fb46099..1a982a926f21 100644
> > --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> > +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> > @@ -847,10 +847,9 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
> >       if (IS_ERR_OR_NULL(state))
> >               return;
> >
> > -     drm_printf(p, "revision: %d (%d.%d.%d.%d)\n",
> > -                     adreno_gpu->info->revn, adreno_gpu->rev.core,
> > -                     adreno_gpu->rev.major, adreno_gpu->rev.minor,
> > -                     adreno_gpu->rev.patchid);
> > +     drm_printf(p, "revision: %u (%"ADRENO_CHIPID_FMT")\n",
> > +                     adreno_gpu->info->revn,
> > +                     ADRENO_CHIPID_ARGS(adreno_gpu->rev));
> >       /*
> >        * If this is state collected due to iova fault, so fault related info
> >        *
> > @@ -921,10 +920,9 @@ void adreno_dump_info(struct msm_gpu *gpu)
> >       struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
> >       int i;
> >
> > -     printk("revision: %d (%d.%d.%d.%d)\n",
> > -                     adreno_gpu->info->revn, adreno_gpu->rev.core,
> > -                     adreno_gpu->rev.major, adreno_gpu->rev.minor,
> > -                     adreno_gpu->rev.patchid);
> > +     printk("revision: %u (%"ADRENO_CHIPID_FMT")\n",
> > +                     adreno_gpu->info->revn,
> > +                     ADRENO_CHIPID_ARGS(adreno_gpu->rev));
> >
> >       for (i = 0; i < gpu->nr_rings; i++) {
> >               struct msm_ringbuffer *ring = gpu->rb[i];
> > @@ -1105,9 +1103,8 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
> >               speedbin = 0xffff;
> >       adreno_gpu->speedbin = (uint16_t) (0xffff & speedbin);
> >
> > -     gpu_name = devm_kasprintf(dev, GFP_KERNEL, "%d.%d.%d.%d",
> > -                     rev->core, rev->major, rev->minor,
> > -                     rev->patchid);
> > +     gpu_name = devm_kasprintf(dev, GFP_KERNEL, "%"ADRENO_CHIPID_FMT,
> > +                     ADRENO_CHIPID_ARGS(config->rev));
> >       if (!gpu_name)
> >               return -ENOMEM;
> >
> > diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > index 2fa14dcd4e40..73e7155f164c 100644
> > --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> > @@ -66,6 +66,12 @@ struct adreno_rev {
> >  #define ADRENO_REV(core, major, minor, patchid) \
> >       ((struct adreno_rev){ core, major, minor, patchid })
> >
> > +/* Helper for formating the chip_id in the way that userspace tools like
> > + * crashdec expect.
> > + */
> > +#define ADRENO_CHIPID_FMT "u.%u.%u.%u"
> > +#define ADRENO_CHIPID_ARGS(_r) (_r).core, (_r).major, (_r).minor, (_r).patchid
> > +
> >  struct adreno_gpu_funcs {
> >       struct msm_gpu_funcs base;
> >       int (*get_timestamp)(struct msm_gpu *gpu, uint64_t *value);