linux-kernel - [PATCH v2 0/5] gpu: nova-core: Hopper/Blackwell prerequisites

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Message-ID: <20251126013936.650678-1-jhubbard@nvidia.com>
Date: Tue, 25 Nov 2025 17:39:31 -0800
From: John Hubbard <jhubbard@...dia.com>
To: Danilo Krummrich <dakr@...nel.org>
Cc: Alexandre Courbot <acourbot@...dia.com>,
	Joel Fernandes <joelagnelf@...dia.com>,
	Timur Tabi <ttabi@...dia.com>,
	Alistair Popple <apopple@...dia.com>,
	Edwin Peer <epeer@...dia.com>,
	Zhi Wang <zhiw@...dia.com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	nouveau@...ts.freedesktop.org,
	rust-for-linux@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	John Hubbard <jhubbard@...dia.com>
Subject: [PATCH v2 0/5] gpu: nova-core: Hopper/Blackwell prerequisites

Hi,

I'm posting this now, instead of with the upcoming full Hopper/Blackwell
series, because this includes some HAL improvements here that will
undoubtedly interact "a little bit" with Timur Tabi's Turing support
patchset [1].

Changes in v2:

0) Rebased on top of today's drm-rust-next.

1) Use a new FbRange newtype, in order to clean up the implementation of
printing ranges with sizes. (Thanks to Alex Courbot's suggestion.)

2) Combined the Hopper and Blackwell HAL additions, into a single patch,
as recommended by Timur Tabi.

3) Used a separate patch to change the "use" lines to vertical format.
That patch is already a commit in drm-rust-next, so this series builds
on top of that.

4) Dropped one patch entirely, because the boot0/boot42 commits fixed
up everything already.

As implied above, this is based on top of today's drm-rust-next. There
is also a branch, for convenience in reviewing:

https://github.com/johnhubbard/linux/tree/nova-core-blackwell-prereqs-v2

[1] https://lore.kernel.org/20251114233045.2512853-1-ttabi@nvidia.com

************************************************************************
Here's the original cover letter, edited slightly (removed the link
to the v0 series, to avoid anyone going there by mistake):

I've based these Hopper/Blackwell prerequisites on top of Joel's and
Alex's changes, and also on top of my recent boot0/boot42 changes.

This makes it easier for both Timur Tabi to post his Turing support
(which he's about ready to do), and for me to post the actual
Hopper/Blackwell support, without generating conflicts.

Testing: This works as expected on Ampere and Blackwell (bare metal),
on my local test machine.

John Hubbard (5):
  gpu: nova-core: print FB sizes, along with ranges
  gpu: nova-core: add FbRange.len() and use it in boot.rs
  gpu: nova-core: Hopper/Blackwell: basic GPU identification
  nova-core: factor .fwsignature* selection into a new
    get_gsp_sigs_section()
  gpu: nova-core: use GPU Architecture to simplify HAL selections

 drivers/gpu/nova-core/falcon/hal.rs   | 19 ++++---
 drivers/gpu/nova-core/fb.rs           | 72 ++++++++++++++++++++-------
 drivers/gpu/nova-core/fb/hal.rs       | 18 +++----
 drivers/gpu/nova-core/firmware/gsp.rs | 30 +++++++++--
 drivers/gpu/nova-core/gpu.rs          | 22 ++++++++
 drivers/gpu/nova-core/gsp/boot.rs     |  2 +-
 6 files changed, 125 insertions(+), 38 deletions(-)

base-commit: 57dc2ea0b7bdb828c5d966d9135c28fe854933a4
-- 
2.52.0