[PATCH 0/2] gpu: nova-core: add two prerequisites for the r000 GSP firmware

[John Hubbard <jhubbard@nvidia.com>]

Here are two preparatory changes for (or more accurately, from) the r000
GSP firmware series [1], which enables nova-core to work with the GSP
firmware for r615+ releases.

Both of these patches stand on their own, so posting them now helps
avoid reviewing a huge-er r000 series. :)

* For the Rust PCI abstraction, add an accessor for the PCI domain
  number.

* Factor out the shutdown path's check for a suspended GSP. The r000
  boot sequence needs the same check, so it gets factored out and
  cleaned up a bit at the same time, by using register!() for the bit 31
  access.

This applies to today's drm-rust-next: commit a7cdb17ca0d7.

An LLM coding assistant (Claude Code) helped write both patches, but I
have fussed over every line of both the code and the commit messages.
The LLM also drafted the first version of this letter, which I've
completely rewritten, because it totally missed the point. All of the
points. :)

Testing: booted nova-core on my 3-GPU test system (Turing, Ampere and
Blackwell GPUs) with all KUnit and built-in Nova tests enabled, as
usual.

[1] https://lore.kernel.org/all/20260918010719.1176945-1-jhubbard@nvidia.com/


John Hubbard (2):
  rust: pci: add domain_nr() accessor
  gpu: nova-core: factor out and expose Falcon::is_processor_suspended()

 drivers/gpu/nova-core/falcon/gsp.rs |  7 +++++++
 drivers/gpu/nova-core/gsp/boot.rs   |  6 ++----
 drivers/gpu/nova-core/regs.rs       |  5 +++++
 rust/helpers/pci.c                  |  5 +++++
 rust/kernel/pci.rs                  | 14 ++++++++++++++
 5 files changed, 33 insertions(+), 4 deletions(-)


base-commit: a7cdb17ca0d7ce67e9f3a52d39edd60f03223729
-- 
2.56.0