linux-kernel - [PATCH 2/6] gpu: nova-core: Hopper: basic GPU identification

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Message-ID: <20251106035435.619949-3-jhubbard@nvidia.com>
Date: Wed,  5 Nov 2025 19:54:31 -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 2/6] gpu: nova-core: Hopper: basic GPU identification

GH100 identification, including the ELF .fwsignature_gh10x.

Signed-off-by: John Hubbard <jhubbard@...dia.com>
---
 drivers/gpu/nova-core/falcon/hal.rs   | 2 +-
 drivers/gpu/nova-core/fb/hal.rs       | 2 +-
 drivers/gpu/nova-core/firmware/gsp.rs | 1 +
 drivers/gpu/nova-core/gpu.rs          | 5 +++++
 4 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/nova-core/falcon/hal.rs b/drivers/gpu/nova-core/falcon/hal.rs
index c6c71db1bb70..2e1fcd7ac813 100644
--- a/drivers/gpu/nova-core/falcon/hal.rs
+++ b/drivers/gpu/nova-core/falcon/hal.rs
@@ -44,7 +44,7 @@ pub(super) fn falcon_hal<E: FalconEngine + 'static>(
     use Chipset::*;
 
     let hal = match chipset {
-        GA102 | GA103 | GA104 | GA106 | GA107 | AD102 | AD103 | AD104 | AD106 | AD107 => {
+        GA102 | GA103 | GA104 | GA106 | GA107 | GH100 | AD102 | AD103 | AD104 | AD106 | AD107 => {
             KBox::new(ga102::Ga102::<E>::new(), GFP_KERNEL)? as KBox<dyn FalconHal<E>>
         }
         _ => return Err(ENOTSUPP),
diff --git a/drivers/gpu/nova-core/fb/hal.rs b/drivers/gpu/nova-core/fb/hal.rs
index 2f914948bb9a..c8e86193317d 100644
--- a/drivers/gpu/nova-core/fb/hal.rs
+++ b/drivers/gpu/nova-core/fb/hal.rs
@@ -32,7 +32,7 @@ pub(super) fn fb_hal(chipset: Chipset) -> &'static dyn FbHal {
     match chipset {
         TU102 | TU104 | TU106 | TU117 | TU116 => tu102::TU102_HAL,
         GA100 => ga100::GA100_HAL,
-        GA102 | GA103 | GA104 | GA106 | GA107 | AD102 | AD103 | AD104 | AD106 | AD107 => {
+        GA102 | GA103 | GA104 | GA106 | GA107 | GH100 | AD102 | AD103 | AD104 | AD106 | AD107 => {
             ga102::GA102_HAL
         }
     }
diff --git a/drivers/gpu/nova-core/firmware/gsp.rs b/drivers/gpu/nova-core/firmware/gsp.rs
index e3d76a300851..f824863ad551 100644
--- a/drivers/gpu/nova-core/firmware/gsp.rs
+++ b/drivers/gpu/nova-core/firmware/gsp.rs
@@ -151,6 +151,7 @@ pub(crate) fn new<'a, 'b>(
 
         let sigs_section = match chipset.arch() {
             Architecture::Ampere => ".fwsignature_ga10x",
+            Architecture::Hopper => ".fwsignature_gh10x",
             Architecture::Ada => ".fwsignature_ad10x",
             _ => return Err(ENOTSUPP),
         };
diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index 9025bab1726b..678577cd8c9c 100644
--- a/drivers/gpu/nova-core/gpu.rs
+++ b/drivers/gpu/nova-core/gpu.rs
@@ -70,6 +70,8 @@ fn try_from(value: u32) -> Result<Self, Self::Error> {
     GA104 = 0x174,
     GA106 = 0x176,
     GA107 = 0x177,
+    // Hopper
+    GH100 = 0x180,
     // Ada
     AD102 = 0x192,
     AD103 = 0x193,
@@ -87,6 +89,7 @@ pub(crate) fn arch(&self) -> Architecture {
             Self::GA100 | Self::GA102 | Self::GA103 | Self::GA104 | Self::GA106 | Self::GA107 => {
                 Architecture::Ampere
             }
+            Self::GH100 => Architecture::Hopper,
             Self::AD102 | Self::AD103 | Self::AD104 | Self::AD106 | Self::AD107 => {
                 Architecture::Ada
             }
@@ -115,6 +118,7 @@ pub(crate) enum Architecture {
     #[default]
     Turing = 0x16,
     Ampere = 0x17,
+    Hopper = 0x18,
     Ada = 0x19,
 }
 
@@ -125,6 +129,7 @@ fn try_from(value: u8) -> Result<Self> {
         match value {
             0x16 => Ok(Self::Turing),
             0x17 => Ok(Self::Ampere),
+            0x18 => Ok(Self::Hopper),
             0x19 => Ok(Self::Ada),
             _ => Err(ENODEV),
         }
-- 
2.51.2