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sample: rust: pci: add tests for config space routines

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Add tests exercising the PCI configuration space helpers.

Suggested-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Zhi Wang <zhiw@nvidia.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260121202212.4438-6-zhiw@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
This commit is contained in:
Zhi Wang 2026-01-21 22:22:11 +02:00 committed by Danilo Krummrich
parent 4dc0bacb1d
commit e62e48adf7
1 changed files with 26 additions and 0 deletions
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26
samples/rust/rust_driver_pci.rs
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@ -5,6 +5,7 @@
//! To make this driver probe, QEMU must be run with `-device pci-testdev`. //! To make this driver probe, QEMU must be run with `-device pci-testdev`.
use kernel::{ use kernel::{
device::Bound,
device::Core, device::Core,
devres::Devres, devres::Devres,
io::Io, io::Io,
@ -65,6 +66,30 @@ fn testdev(index: &TestIndex, bar: &Bar0) -> Result<u32> {
Ok(bar.read32(Regs::COUNT)) Ok(bar.read32(Regs::COUNT))
} }
fn config_space(pdev: &pci::Device<Bound>) {
let config = pdev.config_space();
// TODO: use the register!() macro for defining PCI configuration space registers once it
// has been move out of nova-core.
dev_info!(
pdev.as_ref(),
"pci-testdev config space read8 rev ID: {:x}\n",
config.read8(0x8)
);
dev_info!(
pdev.as_ref(),
"pci-testdev config space read16 vendor ID: {:x}\n",
config.read16(0)
);
dev_info!(
pdev.as_ref(),
"pci-testdev config space read32 BAR 0: {:x}\n",
config.read32(0x10)
);
}
} }
impl pci::Driver for SampleDriver { impl pci::Driver for SampleDriver {
@ -96,6 +121,7 @@ fn probe(pdev: &pci::Device<Core>, info: &Self::IdInfo) -> impl PinInit<Self, Er
"pci-testdev data-match count: {}\n", "pci-testdev data-match count: {}\n",
Self::testdev(info, bar)? Self::testdev(info, bar)?
); );
Self::config_space(pdev);
}, },
pdev: pdev.into(), pdev: pdev.into(),
})) }))