[PATCH v4 04/33] gpu: nova-core: Hopper/Blackwell: basic GPU identification

John Hubbard
2026-02-10T02:46:17Z

Hopper (GH100) and Blackwell identification, including ELF
.fwsignature_* items.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
drivers/gpu/nova-core/falcon/hal.rs | 3 ++-
drivers/gpu/nova-core/fb/hal.rs | 5 ++---
drivers/gpu/nova-core/firmware/gsp.rs | 17 +++++++++++++++++
drivers/gpu/nova-core/gpu.rs | 22 ++++++++++++++++++++++
4 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/nova-core/falcon/hal.rs b/drivers/gpu/nova-core/falcon/hal.rs
index 89babd5f9325..444c95fd4ece 100644
--- a/drivers/gpu/nova-core/falcon/hal.rs
+++ b/drivers/gpu/nova-core/falcon/hal.rs
@@ -76,7 +76,8 @@ pub(super) fn falcon_hal<E: FalconEngine + 'static>(
TU102 | TU104 | TU106 | TU116 | TU117 => {
KBox::new(tu102::Tu102::<E>::new(), GFP_KERNEL)? as KBox<dyn FalconHal<E>>
}
- GA102 | GA103 | GA104 | GA106 | GA107 | AD102 | AD103 | AD104 | AD106 | AD107 => {
+ GA102 | GA103 | GA104 | GA106 | GA107 | AD102 | AD103 | AD104 | AD106 | AD107 | GH100
+ | GB100 | GB102 | GB202 | GB203 | GB205 | GB206 | GB207 => {
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 aba0abd8ee00..71fa92d1b709 100644
--- a/drivers/gpu/nova-core/fb/hal.rs
+++ b/drivers/gpu/nova-core/fb/hal.rs
@@ -34,8 +34,7 @@ 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::GA102_HAL
- }
+ GA102 | GA103 | GA104 | GA106 | GA107 | GH100 | AD102 | AD103 | AD104 | AD106 | AD107
+ | GB100 | GB102 | GB202 | GB203 | GB205 | GB206 | GB207 => ga102::GA102_HAL,
}
}
diff --git a/drivers/gpu/nova-core/firmware/gsp.rs b/drivers/gpu/nova-core/firmware/gsp.rs
index 9488a626352f..bc2243450989 100644
--- a/drivers/gpu/nova-core/firmware/gsp.rs
+++ b/drivers/gpu/nova-core/firmware/gsp.rs
@@ -222,6 +222,23 @@ pub(crate) fn new<'a>(
Architecture::Ampere if chipset == Chipset::GA100 => ".fwsignature_tu10x",
Architecture::Ampere => ".fwsignature_ga10x",
Architecture::Ada => ".fwsignature_ad10x",
+ Architecture::Hopper => ".fwsignature_gh10x",
+ Architecture::Blackwell => {
+ // Distinguish between GB10x and GB20x series
+ match chipset {
+ // GB10x series: GB100, GB102
+ Chipset::GB100 | Chipset::GB102 => ".fwsignature_gb10x",
+ // GB20x series: GB202, GB203, GB205, GB206, GB207
+ Chipset::GB202
+ | Chipset::GB203
+ | Chipset::GB205
+ | Chipset::GB206
+ | Chipset::GB207 => ".fwsignature_gb20x",
+ // It's not possible to get here with a non-Blackwell chipset, but
+ // Rust doesn't know that.
+ _ => return Err(ENOTSUPP),
+ }
+ }
};

elf::elf64_section(firmware.data(), sigs_section)
diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index f5907c31a66d..b6a898008a59 100644
--- a/drivers/gpu/nova-core/gpu.rs
+++ b/drivers/gpu/nova-core/gpu.rs
@@ -83,12 +83,22 @@ fn try_from(value: u32) -> Result<Self, Self::Error> {
GA104 = 0x174,
GA106 = 0x176,
GA107 = 0x177,
+ // Hopper
+ GH100 = 0x180,
// Ada
AD102 = 0x192,
AD103 = 0x193,
AD104 = 0x194,
AD106 = 0x196,
AD107 = 0x197,
+ // Blackwell
+ GB100 = 0x1a0,
+ GB102 = 0x1a2,
+ GB202 = 0x1b2,
+ GB203 = 0x1b3,
+ GB205 = 0x1b5,
+ GB206 = 0x1b6,
+ GB207 = 0x1b7,
});

impl Chipset {
@@ -100,9 +110,17 @@ 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
}
+ Self::GB100
+ | Self::GB102
+ | Self::GB202
+ | Self::GB203
+ | Self::GB205
+ | Self::GB206
+ | Self::GB207 => Architecture::Blackwell,
}
}
}
@@ -132,7 +150,9 @@ pub(crate) enum Architecture {
#[default]
Turing = 0x16,
Ampere = 0x17,
+ Hopper = 0x18,
Ada = 0x19,
+ Blackwell = 0x1b,
}

impl TryFrom<u8> for Architecture {
@@ -142,7 +162,9 @@ 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),
+ 0x1b => Ok(Self::Blackwell),
_ => Err(ENODEV),
}
}
--
2.53.0