[PATCH v1 4/7] gpu: nova-core: add Architecture::is_pre_hopper() helper

[Joel Fernandes <joelagnelf@nvidia.com>]

Add a helper method to the Architecture enum that returns true for Turing,
Ampere, and Ada -- the GPU generations that predate Hopper.

The interrupt controller uses this to determine the number of active
interrupt leaves at construction time.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
---
 drivers/gpu/nova-core/gpu.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index 3ac9cb106bfd..3b45bce6738b 100644
--- a/drivers/gpu/nova-core/gpu.rs
+++ b/drivers/gpu/nova-core/gpu.rs
@@ -163,6 +163,13 @@ pub(crate) enum Architecture with TryFrom<Bounded<u32, 6>> {
     }
 }
 
+impl Architecture {
+    /// Returns `true` for GPU architectures that predate Hopper.
+    pub(crate) fn is_pre_hopper(self) -> bool {
+        matches!(self, Self::Turing | Self::Ampere | Self::Ada)
+    }
+}
+
 #[derive(Clone, Copy)]
 pub(crate) struct Revision {
     major: Bounded<u8, 4>,
-- 
2.34.1