mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 04:18:39 +08:00
rust: net::phy implement AsRef<kernel::device::Device> trait
Implement AsRef<kernel::device::Device> trait for Device. A PHY driver needs a reference to device::Device to call the firmware API. 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:
parent
ffd2747de6
commit
7909892a9f
@ -7,8 +7,7 @@
|
||||
//! C headers: [`include/linux/phy.h`](srctree/include/linux/phy.h).
|
||||
|
||||
use crate::{error::*, prelude::*, types::Opaque};
|
||||
|
||||
use core::marker::PhantomData;
|
||||
use core::{marker::PhantomData, ptr::addr_of_mut};
|
||||
|
||||
/// PHY state machine states.
|
||||
///
|
||||
@ -58,8 +57,9 @@ pub enum DuplexMode {
|
||||
///
|
||||
/// # Invariants
|
||||
///
|
||||
/// Referencing a `phy_device` using this struct asserts that you are in
|
||||
/// a context where all methods defined on this struct are safe to call.
|
||||
/// - Referencing a `phy_device` using this struct asserts that you are in
|
||||
/// a context where all methods defined on this struct are safe to call.
|
||||
/// - This struct always has a valid `self.0.mdio.dev`.
|
||||
///
|
||||
/// [`struct phy_device`]: srctree/include/linux/phy.h
|
||||
// During the calls to most functions in [`Driver`], the C side (`PHYLIB`) holds a lock that is
|
||||
@ -76,9 +76,11 @@ impl Device {
|
||||
///
|
||||
/// # Safety
|
||||
///
|
||||
/// For the duration of 'a, the pointer must point at a valid `phy_device`,
|
||||
/// and the caller must be in a context where all methods defined on this struct
|
||||
/// are safe to call.
|
||||
/// For the duration of `'a`,
|
||||
/// - the pointer must point at a valid `phy_device`, and the caller
|
||||
/// must be in a context where all methods defined on this struct
|
||||
/// are safe to call.
|
||||
/// - `(*ptr).mdio.dev` must be a valid.
|
||||
unsafe fn from_raw<'a>(ptr: *mut bindings::phy_device) -> &'a mut Self {
|
||||
// CAST: `Self` is a `repr(transparent)` wrapper around `bindings::phy_device`.
|
||||
let ptr = ptr.cast::<Self>();
|
||||
@ -302,6 +304,14 @@ impl Device {
|
||||
}
|
||||
}
|
||||
|
||||
impl AsRef<kernel::device::Device> for Device {
|
||||
fn as_ref(&self) -> &kernel::device::Device {
|
||||
let phydev = self.0.get();
|
||||
// SAFETY: The struct invariant ensures that `mdio.dev` is valid.
|
||||
unsafe { kernel::device::Device::as_ref(addr_of_mut!((*phydev).mdio.dev)) }
|
||||
}
|
||||
}
|
||||
|
||||
/// Defines certain other features this PHY supports (like interrupts).
|
||||
///
|
||||
/// These flag values are used in [`Driver::FLAGS`].
|
||||
|
Loading…
Reference in New Issue
Block a user