1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/gpu/nova-core/regs.rs b/drivers/gpu/nova-core/regs.rs
new file mode 100644
index 000000000000..5a1273230306
--- /dev/null
+++ b/drivers/gpu/nova-core/regs.rs
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+
+// Required to retain the original register names used by OpenRM, which are all capital snake case
+// but are mapped to types.
+#![allow(non_camel_case_types)]
+
+#[macro_use]
+mod macros;
+
+use crate::gpu::{Architecture, Chipset};
+use kernel::prelude::*;
+
+/* PMC */
+
+register!(NV_PMC_BOOT_0 @ 0x00000000, "Basic revision information about the GPU" {
+    3:0     minor_revision as u8, "Minor revision of the chip";
+    7:4     major_revision as u8, "Major revision of the chip";
+    8:8     architecture_1 as u8, "MSB of the architecture";
+    23:20   implementation as u8, "Implementation version of the architecture";
+    28:24   architecture_0 as u8, "Lower bits of the architecture";
+});
+
+impl NV_PMC_BOOT_0 {
+    /// Combines `architecture_0` and `architecture_1` to obtain the architecture of the chip.
+    pub(crate) fn architecture(self) -> Result<Architecture> {
+        Architecture::try_from(
+            self.architecture_0() | (self.architecture_1() << Self::ARCHITECTURE_0.len()),
+        )
+    }
+
+    /// Combines `architecture` and `implementation` to obtain a code unique to the chipset.
+    pub(crate) fn chipset(self) -> Result<Chipset> {
+        self.architecture()
+            .map(|arch| {
+                ((arch as u32) << Self::IMPLEMENTATION.len()) | self.implementation() as u32
+            })
+            .and_then(Chipset::try_from)
+    }
+}