[PATCH v8 04/31] gpu: nova-core: add Copy/Clone to Spec and Revision, add chipset() accessor

[John Hubbard <jhubbard@nvidia.com>]

Derive Clone and Copy for Revision and Spec. Both are small
value types (4 bytes total) and Copy makes them easier to use
in later patches that pass them across function boundaries.

Add a Spec::chipset() accessor for use by later patches that
need the chipset outside of gpu.rs.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 drivers/gpu/nova-core/gpu.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index 3b4ccc3d18b9..3cd7709883be 100644
--- a/drivers/gpu/nova-core/gpu.rs
+++ b/drivers/gpu/nova-core/gpu.rs
@@ -184,6 +184,7 @@ fn from(value: Architecture) -> Self {
     }
 }
 
+#[derive(Clone, Copy)]
 pub(crate) struct Revision {
     major: u8,
     minor: u8,
@@ -205,6 +206,7 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
 }
 
 /// Structure holding a basic description of the GPU: `Chipset` and `Revision`.
+#[derive(Clone, Copy)]
 pub(crate) struct Spec {
     chipset: Chipset,
     revision: Revision,
@@ -241,6 +243,11 @@ fn new(dev: &device::Device, bar: &Bar0) -> Result<Spec> {
             dev_err!(dev, "Unsupported chipset: {}\n", boot42);
         })
     }
+
+    /// Returns this GPU's chipset.
+    pub(crate) fn chipset(&self) -> Chipset {
+        self.chipset
+    }
 }
 
 impl TryFrom<regs::NV_PMC_BOOT_42> for Spec {
@@ -291,10 +298,9 @@ pub(crate) fn new<'a>(
     ) -> impl PinInit<Self, Error> + 'a {
         try_pin_init!(Self {
             spec: Spec::new(pdev.as_ref(), bar).inspect(|spec| {
-                dev_info!(pdev,"NVIDIA ({})\n", spec);
+                dev_info!(pdev, "NVIDIA ({})\n", spec);
             })?,
 
-            // We must wait for GFW_BOOT completion before doing any significant setup on the GPU.
             _: {
                 gfw::wait_gfw_boot_completion(bar)
                     .inspect_err(|_| dev_err!(pdev, "GFW boot did not complete\n"))?;
-- 
2.53.0