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rust: net::phy support probe callback

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Support phy_driver probe callback, used to set up device-specific
structures.

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
FUJITA Tomonori 2024-08-28 07:35:12 +00:00 committed by David S. Miller
parent 4d080a029d
commit ffd2747de6
1 changed files with 25 additions and 0 deletions
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25
rust/kernel/net/phy.rs
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@ -338,6 +338,21 @@ impl<T: Driver> Adapter<T> {
})
}
/// # Safety
///
/// `phydev` must be passed by the corresponding callback in `phy_driver`.
unsafe extern "C" fn probe_callback(phydev: *mut bindings::phy_device) -> core::ffi::c_int {
from_result(|| {
// SAFETY: This callback is called only in contexts
// where we can exclusively access `phy_device` because
// it's not published yet, so the accessors on `Device` are okay
// to call.
let dev = unsafe { Device::from_raw(phydev) };
T::probe(dev)?;
Ok(0)
})
}
/// # Safety
///
/// `phydev` must be passed by the corresponding callback in `phy_driver`.
@ -511,6 +526,11 @@ pub const fn create_phy_driver<T: Driver>() -> DriverVTable {
} else {
None
},
probe: if T::HAS_PROBE {
Some(Adapter::<T>::probe_callback)
} else {
None
},
get_features: if T::HAS_GET_FEATURES {
Some(Adapter::<T>::get_features_callback)
} else {
@ -583,6 +603,11 @@ pub trait Driver {
kernel::build_error(VTABLE_DEFAULT_ERROR)
}
/// Sets up device-specific structures during discovery.
fn probe(_dev: &mut Device) -> Result {
kernel::build_error(VTABLE_DEFAULT_ERROR)
}
/// Probes the hardware to determine what abilities it has.
fn get_features(_dev: &mut Device) -> Result {
kernel::build_error(VTABLE_DEFAULT_ERROR)