[PATCH v4 08/10] gpu: nova-core: convert falcon registers to kernel register macro

[Alexandre Courbot]

On Wed Mar 25, 2026 at 11:46 AM JST, Alexandre Courbot wrote:
> Convert all PFALCON, PFALCON2 and PRISCV registers to use the kernel's
> register macro and update the code accordingly.
>
> Because they rely on the same types to implement relative registers,
> they need to be updated in lockstep.
>
> nova-core's local register macro is now unused, so remove it.
>
> Reviewed-by: Gary Guo <gary at garyguo.net>
> Signed-off-by: Alexandre Courbot <acourbot at nvidia.com>
> ---
>  drivers/gpu/nova-core/falcon.rs                    | 521 ++++++---------
>  drivers/gpu/nova-core/falcon/gsp.rs                |  22 +-
>  drivers/gpu/nova-core/falcon/hal/ga102.rs          |  55 +-
>  drivers/gpu/nova-core/falcon/hal/tu102.rs          |  12 +-
>  drivers/gpu/nova-core/falcon/sec2.rs               |  17 +-
>  drivers/gpu/nova-core/firmware/fwsec/bootloader.rs |  19 +-
>  drivers/gpu/nova-core/regs.rs                      | 353 +++++-----
>  drivers/gpu/nova-core/regs/macros.rs               | 739 ---------------------
>  8 files changed, 457 insertions(+), 1281 deletions(-)
>
> diff --git a/drivers/gpu/nova-core/falcon.rs b/drivers/gpu/nova-core/falcon.rs
> index 123de6c55b45..f3c0ee4d82a6 100644
> --- a/drivers/gpu/nova-core/falcon.rs
> +++ b/drivers/gpu/nova-core/falcon.rs
> @@ -15,14 +15,20 @@
>      },
>      io::{
>          poll::read_poll_timeout,
> -        Io, //
> +        register::{
> +            RegisterBase,
> +            WithBase, //
> +        },
> +        Io,
>      },
> +    num::Bounded,

Apologies, I just realized this is a leftover which triggers the following error:

warning: unused import: `num::Bounded`
  --> ../drivers/gpu/nova-core/falcon.rs:24:5
   |
24 |     num::Bounded,
   |     ^^^^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default

Not sure how it slipped in as I build each patch individually in my
checklist script. Thankfully this is easily fixed.

The silver lining is that this shows that despite the heavy reliance on
`Bounded` for register bitfields, this heavy user does not need to
create a single one explicitly. :)