Re: [PATCH 2/4] gpu: nova: Add DRM registration data

[Alistair Popple <apopple@nvidia.com>]

On 2026-07-07 at 04:01 +1000, Danilo Krummrich <dakr@kernel.org> wrote...
> On Mon Jul 6, 2026 at 7:34 AM CEST, Alistair Popple wrote:
> > diff --git a/drivers/gpu/drm/nova/file.rs b/drivers/gpu/drm/nova/file.rs
> > index 298c02bacb4b..855b6ffe696f 100644
> > --- a/drivers/gpu/drm/nova/file.rs
> > +++ b/drivers/gpu/drm/nova/file.rs
> > @@ -1,11 +1,10 @@
> >  // SPDX-License-Identifier: GPL-2.0
> >  
> > -use crate::driver::{NovaDevice, NovaDriver};
> > +use crate::driver::{DrmRegData, NovaDevice, NovaDriver};
> 
> Please switch to vertical import style.

Will do.

> >  use crate::gem::NovaObject;
> >  use kernel::{
> >      alloc::flags::*,
> >      auxiliary,
> > -    device::Bound,
> >      drm::{
> >          self,
> >          gem::BaseObject,
> > @@ -30,12 +29,12 @@ impl File {
> >      /// IOCTL: get_param: Query GPU / driver metadata.
> >      pub(crate) fn get_param(
> >          dev: &NovaDevice<Registered>,
> > -        _reg_data: &(),
> > +        _reg_data: &DrmRegData<'_>,
> >          getparam: &mut uapi::drm_nova_getparam,
> >          _file: &drm::File<File>,
> >      ) -> Result<u32> {
> > -        let adev: &auxiliary::Device<Bound> = dev.as_ref();
> > -        let pdev: &pci::Device<Bound> = adev.parent().try_into()?;
> > +        let adev: &auxiliary::Device<_> = dev.as_ref();
> > +        let pdev: &pci::Device<_> = adev.parent().try_into()?;

Actually I'd meant to drop this change as it's unrelated and was just me quizzing
my Rust undertanding :-)
 
> Nothing for this patch, but now that we can call into nova-core we can obtain
> the information from the pci::Device via NovaCoreApi.
> 
> The advantage is that NovaCoreApi can store the pci::Device<Bound> from
> nova-core directly, i.e. we get rid of the try_into() dance to obtain the
> correct parent device type.
> 
> Subsequently, we can remove this TryInto impl entirely. :)

That would be nice. I might add that as patch to this series.