[PATCH 3/9] gpu: nova-core: gsp: expose GSP-RM internal client and subdevice handles

[Eliot Courtney <ecourtney@nvidia.com>]

Expose the `hInternalClient` and `hInternalSubdevice` handles. These are
needed for RM control calls.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
---
 drivers/gpu/nova-core/gsp/commands.rs    | 16 ++++++++++++++++
 drivers/gpu/nova-core/gsp/fw/commands.rs | 10 ++++++++++
 2 files changed, 26 insertions(+)

diff --git a/drivers/gpu/nova-core/gsp/commands.rs b/drivers/gpu/nova-core/gsp/commands.rs
index 4740cda0b51c..2cadfcaf9a8a 100644
--- a/drivers/gpu/nova-core/gsp/commands.rs
+++ b/drivers/gpu/nova-core/gsp/commands.rs
@@ -197,6 +197,8 @@ fn init(&self) -> impl Init<Self::Command, Self::InitError> {
 /// The reply from the GSP to the [`GetGspInfo`] command.
 pub(crate) struct GetGspStaticInfoReply {
     gpu_name: [u8; 64],
+    h_client: u32,
+    h_subdevice: u32,
 }
 
 impl MessageFromGsp for GetGspStaticInfoReply {
@@ -210,6 +212,8 @@ fn read(
     ) -> Result<Self, Self::InitError> {
         Ok(GetGspStaticInfoReply {
             gpu_name: msg.gpu_name_str(),
+            h_client: msg.h_internal_client(),
+            h_subdevice: msg.h_internal_subdevice(),
         })
     }
 }
@@ -236,6 +240,18 @@ pub(crate) fn gpu_name(&self) -> core::result::Result<&str, GpuNameError> {
             .to_str()
             .map_err(GpuNameError::InvalidUtf8)
     }
+
+    /// Returns the internal client handle allocated by GSP-RM.
+    #[expect(dead_code)]
+    pub(crate) fn h_client(&self) -> u32 {
+        self.h_client
+    }
+
+    /// Returns the internal subdevice handle allocated by GSP-RM.
+    #[expect(dead_code)]
+    pub(crate) fn h_subdevice(&self) -> u32 {
+        self.h_subdevice
+    }
 }
 
 /// Send the [`GetGspInfo`] command and awaits for its reply.
diff --git a/drivers/gpu/nova-core/gsp/fw/commands.rs b/drivers/gpu/nova-core/gsp/fw/commands.rs
index 67f44421fcc3..aaf3509a0207 100644
--- a/drivers/gpu/nova-core/gsp/fw/commands.rs
+++ b/drivers/gpu/nova-core/gsp/fw/commands.rs
@@ -115,6 +115,16 @@ impl GspStaticConfigInfo {
     pub(crate) fn gpu_name_str(&self) -> [u8; 64] {
         self.0.gpuNameString
     }
+
+    /// Returns the internal client handle allocated by GSP-RM.
+    pub(crate) fn h_internal_client(&self) -> u32 {
+        self.0.hInternalClient
+    }
+
+    /// Returns the internal subdevice handle allocated by GSP-RM.
+    pub(crate) fn h_internal_subdevice(&self) -> u32 {
+        self.0.hInternalSubdevice
+    }
 }
 
 // SAFETY: Padding is explicit and will not contain uninitialized data.

-- 
2.53.0