Commit e62e48ad authored by Zhi Wang's avatar Zhi Wang Committed by Danilo Krummrich
Browse files

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



Add tests exercising the PCI configuration space helpers.

Suggested-by: default avatarDanilo Krummrich <dakr@kernel.org>
Signed-off-by: default avatarZhi Wang <zhiw@nvidia.com>
Reviewed-by: default avatarAlexandre Courbot <acourbot@nvidia.com>
Reviewed-by: default avatarGary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260121202212.4438-6-zhiw@nvidia.com


Signed-off-by: default avatarDanilo Krummrich <dakr@kernel.org>
parent 4dc0bacb

samples/rust/rust_driver_pci.rs

+26 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
//! To make this driver probe, QEMU must be run with `-device pci-testdev`.



use kernel::{

    device::Bound,

    device::Core,

    devres::Devres,

    io::Io,
@@ -65,6 +66,30 @@ fn testdev(index: &TestIndex, bar: &Bar0) -> Result<u32> { 


        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 {
@@ -96,6 +121,7 @@ fn probe(pdev: &pci::Device<Core>, info: &Self::IdInfo) -> impl PinInit<Self, Er 
                        "pci-testdev data-match count: {}\n",

                        Self::testdev(info, bar)?

                    );

                    Self::config_space(pdev);

                },

                pdev: pdev.into(),

            }))