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 |  9 +++++++--
 drivers/gpu/nova-core/gpu.rs          | 22 ++++++++++++++++++++++
 4 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/nova-core/falcon/hal.rs b/drivers/gpu/nova-core/falcon/hal.rs
index a7e5ea8d0272..c7f12f2a7a35 100644
--- a/drivers/gpu/nova-core/falcon/hal.rs
+++ b/drivers/gpu/nova-core/falcon/hal.rs
@@ -80,7 +80,8 @@ 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..e709affaa7e8 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 | AD102 | AD103 | AD104 | AD106 | AD107 | GH100
+        | 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..c1f0a606f5c0 100644
--- a/drivers/gpu/nova-core/firmware/gsp.rs
+++ b/drivers/gpu/nova-core/firmware/gsp.rs
@@ -213,8 +213,7 @@ pub(crate) fn new<'a>(
                 signatures: {
                     let sigs_section = match chipset.arch() {
                         Architecture::Turing
-                            if matches!(chipset, Chipset::TU116 | Chipset::TU117) =>
-                        {
+                            if matches!(chipset, Chipset::TU116 | Chipset::TU117) => {
                             ".fwsignature_tu11x"
                         }
                         Architecture::Turing => ".fwsignature_tu10x",
@@ -222,6 +221,12 @@ 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
+                            if matches!(chipset, Chipset::GB100 | Chipset::GB102) => {
+                            ".fwsignature_gb10x"
+                        }
+                        Architecture::Blackwell => ".fwsignature_gb20x",
                     };
 
                     elf::elf64_section(firmware.data(), sigs_section)
diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index 8579d632e717..3b4ccc3d18b9 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) const 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,
         }
     }
 
@@ -139,7 +157,9 @@ pub(crate) enum Architecture {
     #[default]
     Turing = 0x16,
     Ampere = 0x17,
+    Hopper = 0x18,
     Ada = 0x19,
+    Blackwell = 0x1b,
 }
 
 impl TryFrom<u8> for Architecture {
@@ -149,7 +169,9 @@ 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

On Wed Mar 25, 2026 at 3:52 AM GMT, John Hubbard wrote:
> 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 |  9 +++++++--
>  drivers/gpu/nova-core/gpu.rs          | 22 ++++++++++++++++++++++
>  4 files changed, 33 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
> index 8579d632e717..3b4ccc3d18b9 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,

Sashiko asks if it'll be problematic that 0x1a and 0x1b are both Blackwell.
https://sashiko.dev/#/patchset/20260325035242.368661-1-jhubbard%40nvidia.com

Can you confirm that it is indeed actually okay and is a false positive?

Best,
Gary

> [snip]
>
> @@ -139,7 +157,9 @@ pub(crate) enum Architecture {
>      #[default]
>      Turing = 0x16,
>      Ampere = 0x17,
> +    Hopper = 0x18,
>      Ada = 0x19,
> +    Blackwell = 0x1b,
>  }
>  
>  impl TryFrom<u8> for Architecture {
> @@ -149,7 +169,9 @@ 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),
>          }
>      }

On 3/25/26 8:36 AM, Gary Guo wrote:
> On Wed Mar 25, 2026 at 3:52 AM GMT, John Hubbard wrote:
...
>> +    // Blackwell
>> +    GB100 = 0x1a0,
>> +    GB102 = 0x1a2,
>> +    GB202 = 0x1b2,
>> +    GB203 = 0x1b3,
>> +    GB205 = 0x1b5,
>> +    GB206 = 0x1b6,
>> +    GB207 = 0x1b7,
> 
> Sashiko asks if it'll be problematic that 0x1a and 0x1b are both Blackwell.
> https://sashiko.dev/#/patchset/20260325035242.368661-1-jhubbard%40nvidia.com
> 
> Can you confirm that it is indeed actually okay and is a false positive?
> 

Hi Gary,

Sashiko is correct, good catch. GB10x and GB20x have distinct hardware
architecture bytes (0x1a and 0x1b respectively), but I only had a single
Architecture::Blackwell = 0x1b. That means GB100 and GB102 would fail
probe with ENODEV.

I'm splitting it into Architecture::BlackwellGB10x = 0x1a and
Architecture::BlackwellGB20x = 0x1b, which also lines up with how
Open RM (ARCHITECTURE_GB100 / ARCHITECTURE_GB200) and Nouveau
(GB10x / GB20x) handle it. Will be fixed in v9.


Thanks,
John

thanks,
-- 
John Hubbard