Re: [PATCH 2/4] gpu: nova-core: move GPU static information acquisition to a GSP method

["Gary Guo" <gary@garyguo.net>]

On Tue Jun 9, 2026 at 9:04 AM BST, Alexandre Courbot wrote:
> The GSP static information is useful during regular driver runtime;
> however it is currently obtained from `Gsp::boot`, with no elegant way
> to pass it back to the caller.
>
> Solve this by moving the code acquiring it to a dedicated method of
> `Gsp` that can be called as soon as the `Gsp` is booted. This allows us
> to obtain and display the static information from the `Gpu` constructor,
> and to store the static information for later use.
>
> Its location at the end of `Gsp::boot` was a bit out-of-place anyway:
> technically, the GSP is considered booted after we have received the
> `GspInitDone` message, so anything that happens afterwards is not part
> of the boot sequence anymore.
>
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
> ---
>  drivers/gpu/nova-core/gpu.rs      | 16 ++++++++++++++++
>  drivers/gpu/nova-core/gsp.rs      | 15 +++++++++++----
>  drivers/gpu/nova-core/gsp/boot.rs |  7 -------
>  3 files changed, 27 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
> index 6b3e02c71dee..a0cb36cdeeea 100644
> --- a/drivers/gpu/nova-core/gpu.rs
> +++ b/drivers/gpu/nova-core/gpu.rs
> @@ -23,6 +23,7 @@
>      fb::SysmemFlush,
>      gsp::{
>          self,
> +        commands::GetGspStaticInfoReply,
>          Gsp, //
>      },
>      regs,
> @@ -290,6 +291,8 @@ pub(crate) struct Gpu<'gpu> {
>      /// GSP and its resources.
>      #[pin]
>      gsp_resources: GspResources<'gpu>,
> +    /// Static GPU information as provided by the GSP.
> +    gsp_static_info: GetGspStaticInfoReply,
>  }
>  
>  #[pinned_drop]
> @@ -354,6 +357,19 @@ pub(crate) fn new(
>                  // is properly run in case of failure.
>                  unload_bundle: gsp.boot(pdev, bar, spec.chipset, gsp_falcon, sec2_falcon)?,
>              }),
> +
> +            gsp_static_info: {
> +                let gsp = &gsp_resources.as_ref().get_ref().gsp;

What's this `as_ref().get_ref()` for? This could just be referenced as
`&gsp_resoruces.gsp`? Or am I missing something?

Best,
Gary

> +
> +                // Obtain and display basic GPU information.
> +                let info = gsp.get_static_info(bar)?;
> +                match info.gpu_name() {
> +                    Ok(name) => dev_info!(pdev, "GPU name: {}\n", name),
> +                    Err(e) => dev_warn!(pdev, "GPU name unavailable: {:?}\n", e),
> +                }
> +
> +                info
> +            }
>          })
>      }
>  }